增加libcurl库调用百度API，与原来的的go命令执行调用API两种。libcurl涉及静态链接，考虑使用哪种？

Makefile

@@ -42,6 +42,12 @@ endif
 LIBCAP := $(shell pkg-config --libs --static libcap)
 LIBIPSET := $(shell pkg-config --libs --static libipset)
 
+CFLAGS += -DCURL_STATICLIB -I./libcurl/include
+LIBCURL := -L./libcurl/lib -lcurl -lssh2 -lssh2 -lgpg-error -lssl -ldl -lcrypto -ldl -lz -lssl -lcrypto -lssl -ldl -pthread -lcrypto -ldl -pthread -lzstd -lz
+
+CFLAGS += -I./libcjson/include/
+LIBCJSON := ./libcjson/lib/libcjson.a 
+
 all: $(BIN)  # 默认目标
 
 # 系统信息打印目标
@@ -60,12 +66,12 @@ info:
 ipquery:  # Go 构建目标
 	cd IP_region_query && CGO_ENABLED=0 go build -ldflags '-w -s' && upx -9 ipquery
 
-$(BIN): cap.o common.o ip2region/ip2region.o ip2region/xdb_searcher.o libipset.o
-	$(CC) $(CFLAGS) -o $(BIN) $^ $(LIBPCAP) $(LIBCAP) $(LIBIPSET) $(LIBS)
+$(BIN): cap.o common.o ip2region/ip2region.o ip2region/xdb_searcher.o libipset.o libcurl.o
+	$(CC) $(CFLAGS) -o $(BIN) $^ $(LIBPCAP) $(LIBCAP) $(LIBIPSET) $(LIBCJSON)  $(LIBCURL) $(LIBS)
 
 %.o: %.c
 	$(CC) $(CFLAGS) -c $< -o $@
 
 clean:
 	rm -rf $(BIN) IP_region_query/ipquery
-	rm -rf cap.o common.o ip2region/ip2region.o ip2region/xdb_searcher.o libipset.o
+	rm -rf cap.o common.o ip2region/ip2region.o ip2region/xdb_searcher.o libipset.o libcurl.o

cap.c

@@ -1,6 +1,7 @@
 #include "cap.h"
 #include "common.h"
 #include "libipset.h"
+#include "libcurl.h"
 
     
 pcap_if_t   *alldevs, *device;
@@ -17,7 +18,7 @@ char    *RULE_NAME = NULL;              // 共享内存
 char    *ip2region_area = NULL;         // ip2region 解析结果
 char    *command_result = NULL;         // 执行命令的结果
 
-#define CACHE_TTL 600                   // 设定缓存的存活时间为 600 秒 (10 分钟)
+#define CACHE_TTL 180                   // 设定缓存的存活时间为 600 秒 (10 分钟)
 #define MAX_CACHE_SIZE 100              // 缓存最多存储 100 个 IP 地址
 struct ip_cache_node *ip_cache_head = NULL; //  缓存链表的头节点
 int cache_size = 0;                         // 当前缓存中的 IP 数量
@@ -125,6 +126,12 @@ void packet_handler(u_char *args, const struct pcap_pkthdr *header, const u_char
     char        _REGION_LIST[BUFFER] = { 0 };
     const char  *REGION_ENV = NULL;
 
+    char ipset_query_command[256] = { 0 };
+    char ip_query_command[256] = { 0 };
+
+    // 定义 Response 结构体
+    Response response;
+
     int         r = 0;
     //char        *t = _time();
 
@@ -138,6 +145,12 @@ void packet_handler(u_char *args, const struct pcap_pkthdr *header, const u_char
         return;
     }
 
+    // 如果ipset规则已经存在，则跳过查询
+    snprintf(ipset_query_command, sizeof(ipset_query_command), "ipset test %s %s 2>/dev/null", RULE_NAME, src_ip);
+    if (system(ipset_query_command) == 0) {
+        // _printf(RED "Ipset 规则内已经存在 %s\n" REDEND, src_ip);
+        return;
+    }
 
     // 执行查询并添加到缓存
     ip2region_area = ip2region("ip2region/ip2region.xdb", src_ip);
@@ -145,6 +158,7 @@ void packet_handler(u_char *args, const struct pcap_pkthdr *header, const u_char
         _printf(RED "ip2region 解析地域错误\n" REDEND);
         return;
     }
+
     // 取环境变量
     REGION_ENV = getenv("REGION");
     if (REGION_ENV != NULL) {
@@ -158,15 +172,43 @@ void packet_handler(u_char *args, const struct pcap_pkthdr *header, const u_char
     if (isregion(ip2region_area, _region_list) == 1) { // 返回1表示在白名单列表
         ;
     } else {
-        //puts(ip2region_area);
         
-        char ip_query_command[256] = { 0 };
-        snprintf(ip_query_command, sizeof(ip_query_command), "./IP_region_query/ipquery %s", src_ip);
         if (cache_size < MAX_CACHE_SIZE) // 缓存IP数不够预备设定值
         {
             sleep(1);
             _printf("缓存 IP 数 %d\n", cache_size);
         }
+
+
+        char *p = curl_get_area(src_ip);
+        puts(p);
+        if (parse_json_to_struct(p, &response) == 0) {         // 解析 JSON 到结构体
+            // 输出解析结果
+            printf("Code: %s\n", response.code);
+            printf("IP: %s\n", response.ip);
+            printf("Continent: %s\n", response.data.continent);
+            printf("Country: %s\n", response.data.country);
+            printf("ISP: %s\n", response.data.isp);
+            printf("Region: %s\n", response.data.region);
+
+            
+            char *p1 = strstr(response.continent_country, "中国");
+            if (p1 == NULL) {
+                _printf(RED "%s %s\n" REDEND, src_ip, response.continent_country);
+                r = add_ip_to_ipset(RULE_NAME, src_ip);
+                _printf("add_ip_to_ipset() return %d\n", r);
+            }
+
+        } else {
+            fprintf(stderr, "Failed to parse JSON.\n");
+        }
+
+        free(p);
+
+
+        /* 
+        //go 执行命令方法
+        snprintf(ip_query_command, sizeof(ip_query_command), "./IP_region_query/ipquery %s", src_ip);
         command_result = _execute_command(ip_query_command);
         if (command_result != NULL) {
             add_ip_to_cache(src_ip); // 添加 IP 到缓存
@@ -186,6 +228,7 @@ void packet_handler(u_char *args, const struct pcap_pkthdr *header, const u_char
         
         if (command_result != NULL)
             free(command_result);
+        */
     }
     
     if (ip2region_area != NULL)
@@ -389,7 +432,7 @@ int main(int argc, char **argv)
                 }
             }
 
-            sleep(3);           // 每 3 秒检查一次
+            sleep(9);           // 每 3 秒检查一次
         }
     }
     

libcjson/include/cjson/cJSON.h

@@ -0,0 +1,306 @@
+/*
+  Copyright (c) 2009-2017 Dave Gamble and cJSON contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a copy
+  of this software and associated documentation files (the "Software"), to deal
+  in the Software without restriction, including without limitation the rights
+  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+  copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+  THE SOFTWARE.
+*/
+
+#ifndef cJSON__h
+#define cJSON__h
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+#if !defined(__WINDOWS__) && (defined(WIN32) || defined(WIN64) || defined(_MSC_VER) || defined(_WIN32))
+#define __WINDOWS__
+#endif
+
+#ifdef __WINDOWS__
+
+/* When compiling for windows, we specify a specific calling convention to avoid issues where we are being called from a project with a different default calling convention.  For windows you have 3 define options:
+
+CJSON_HIDE_SYMBOLS - Define this in the case where you don't want to ever dllexport symbols
+CJSON_EXPORT_SYMBOLS - Define this on library build when you want to dllexport symbols (default)
+CJSON_IMPORT_SYMBOLS - Define this if you want to dllimport symbol
+
+For *nix builds that support visibility attribute, you can define similar behavior by
+
+setting default visibility to hidden by adding
+-fvisibility=hidden (for gcc)
+or
+-xldscope=hidden (for sun cc)
+to CFLAGS
+
+then using the CJSON_API_VISIBILITY flag to "export" the same symbols the way CJSON_EXPORT_SYMBOLS does
+
+*/
+
+#define CJSON_CDECL __cdecl
+#define CJSON_STDCALL __stdcall
+
+/* export symbols by default, this is necessary for copy pasting the C and header file */
+#if !defined(CJSON_HIDE_SYMBOLS) && !defined(CJSON_IMPORT_SYMBOLS) && !defined(CJSON_EXPORT_SYMBOLS)
+#define CJSON_EXPORT_SYMBOLS
+#endif
+
+#if defined(CJSON_HIDE_SYMBOLS)
+#define CJSON_PUBLIC(type)   type CJSON_STDCALL
+#elif defined(CJSON_EXPORT_SYMBOLS)
+#define CJSON_PUBLIC(type)   __declspec(dllexport) type CJSON_STDCALL
+#elif defined(CJSON_IMPORT_SYMBOLS)
+#define CJSON_PUBLIC(type)   __declspec(dllimport) type CJSON_STDCALL
+#endif
+#else /* !__WINDOWS__ */
+#define CJSON_CDECL
+#define CJSON_STDCALL
+
+#if (defined(__GNUC__) || defined(__SUNPRO_CC) || defined (__SUNPRO_C)) && defined(CJSON_API_VISIBILITY)
+#define CJSON_PUBLIC(type)   __attribute__((visibility("default"))) type
+#else
+#define CJSON_PUBLIC(type) type
+#endif
+#endif
+
+/* project version */
+#define CJSON_VERSION_MAJOR 1
+#define CJSON_VERSION_MINOR 7
+#define CJSON_VERSION_PATCH 18
+
+#include <stddef.h>
+
+/* cJSON Types: */
+#define cJSON_Invalid (0)
+#define cJSON_False  (1 << 0)
+#define cJSON_True   (1 << 1)
+#define cJSON_NULL   (1 << 2)
+#define cJSON_Number (1 << 3)
+#define cJSON_String (1 << 4)
+#define cJSON_Array  (1 << 5)
+#define cJSON_Object (1 << 6)
+#define cJSON_Raw    (1 << 7) /* raw json */
+
+#define cJSON_IsReference 256
+#define cJSON_StringIsConst 512
+
+/* The cJSON structure: */
+typedef struct cJSON
+{
+    /* next/prev allow you to walk array/object chains. Alternatively, use GetArraySize/GetArrayItem/GetObjectItem */
+    struct cJSON *next;
+    struct cJSON *prev;
+    /* An array or object item will have a child pointer pointing to a chain of the items in the array/object. */
+    struct cJSON *child;
+
+    /* The type of the item, as above. */
+    int type;
+
+    /* The item's string, if type==cJSON_String  and type == cJSON_Raw */
+    char *valuestring;
+    /* writing to valueint is DEPRECATED, use cJSON_SetNumberValue instead */
+    int valueint;
+    /* The item's number, if type==cJSON_Number */
+    double valuedouble;
+
+    /* The item's name string, if this item is the child of, or is in the list of subitems of an object. */
+    char *string;
+} cJSON;
+
+typedef struct cJSON_Hooks
+{
+      /* malloc/free are CDECL on Windows regardless of the default calling convention of the compiler, so ensure the hooks allow passing those functions directly. */
+      void *(CJSON_CDECL *malloc_fn)(size_t sz);
+      void (CJSON_CDECL *free_fn)(void *ptr);
+} cJSON_Hooks;
+
+typedef int cJSON_bool;
+
+/* Limits how deeply nested arrays/objects can be before cJSON rejects to parse them.
+ * This is to prevent stack overflows. */
+#ifndef CJSON_NESTING_LIMIT
+#define CJSON_NESTING_LIMIT 1000
+#endif
+
+/* Limits the length of circular references can be before cJSON rejects to parse them.
+ * This is to prevent stack overflows. */
+#ifndef CJSON_CIRCULAR_LIMIT
+#define CJSON_CIRCULAR_LIMIT 10000
+#endif
+
+/* returns the version of cJSON as a string */
+CJSON_PUBLIC(const char*) cJSON_Version(void);
+
+/* Supply malloc, realloc and free functions to cJSON */
+CJSON_PUBLIC(void) cJSON_InitHooks(cJSON_Hooks* hooks);
+
+/* Memory Management: the caller is always responsible to free the results from all variants of cJSON_Parse (with cJSON_Delete) and cJSON_Print (with stdlib free, cJSON_Hooks.free_fn, or cJSON_free as appropriate). The exception is cJSON_PrintPreallocated, where the caller has full responsibility of the buffer. */
+/* Supply a block of JSON, and this returns a cJSON object you can interrogate. */
+CJSON_PUBLIC(cJSON *) cJSON_Parse(const char *value);
+CJSON_PUBLIC(cJSON *) cJSON_ParseWithLength(const char *value, size_t buffer_length);
+/* ParseWithOpts allows you to require (and check) that the JSON is null terminated, and to retrieve the pointer to the final byte parsed. */
+/* If you supply a ptr in return_parse_end and parsing fails, then return_parse_end will contain a pointer to the error so will match cJSON_GetErrorPtr(). */
+CJSON_PUBLIC(cJSON *) cJSON_ParseWithOpts(const char *value, const char **return_parse_end, cJSON_bool require_null_terminated);
+CJSON_PUBLIC(cJSON *) cJSON_ParseWithLengthOpts(const char *value, size_t buffer_length, const char **return_parse_end, cJSON_bool require_null_terminated);
+
+/* Render a cJSON entity to text for transfer/storage. */
+CJSON_PUBLIC(char *) cJSON_Print(const cJSON *item);
+/* Render a cJSON entity to text for transfer/storage without any formatting. */
+CJSON_PUBLIC(char *) cJSON_PrintUnformatted(const cJSON *item);
+/* Render a cJSON entity to text using a buffered strategy. prebuffer is a guess at the final size. guessing well reduces reallocation. fmt=0 gives unformatted, =1 gives formatted */
+CJSON_PUBLIC(char *) cJSON_PrintBuffered(const cJSON *item, int prebuffer, cJSON_bool fmt);
+/* Render a cJSON entity to text using a buffer already allocated in memory with given length. Returns 1 on success and 0 on failure. */
+/* NOTE: cJSON is not always 100% accurate in estimating how much memory it will use, so to be safe allocate 5 bytes more than you actually need */
+CJSON_PUBLIC(cJSON_bool) cJSON_PrintPreallocated(cJSON *item, char *buffer, const int length, const cJSON_bool format);
+/* Delete a cJSON entity and all subentities. */
+CJSON_PUBLIC(void) cJSON_Delete(cJSON *item);
+
+/* Returns the number of items in an array (or object). */
+CJSON_PUBLIC(int) cJSON_GetArraySize(const cJSON *array);
+/* Retrieve item number "index" from array "array". Returns NULL if unsuccessful. */
+CJSON_PUBLIC(cJSON *) cJSON_GetArrayItem(const cJSON *array, int index);
+/* Get item "string" from object. Case insensitive. */
+CJSON_PUBLIC(cJSON *) cJSON_GetObjectItem(const cJSON * const object, const char * const string);
+CJSON_PUBLIC(cJSON *) cJSON_GetObjectItemCaseSensitive(const cJSON * const object, const char * const string);
+CJSON_PUBLIC(cJSON_bool) cJSON_HasObjectItem(const cJSON *object, const char *string);
+/* For analysing failed parses. This returns a pointer to the parse error. You'll probably need to look a few chars back to make sense of it. Defined when cJSON_Parse() returns 0. 0 when cJSON_Parse() succeeds. */
+CJSON_PUBLIC(const char *) cJSON_GetErrorPtr(void);
+
+/* Check item type and return its value */
+CJSON_PUBLIC(char *) cJSON_GetStringValue(const cJSON * const item);
+CJSON_PUBLIC(double) cJSON_GetNumberValue(const cJSON * const item);
+
+/* These functions check the type of an item */
+CJSON_PUBLIC(cJSON_bool) cJSON_IsInvalid(const cJSON * const item);
+CJSON_PUBLIC(cJSON_bool) cJSON_IsFalse(const cJSON * const item);
+CJSON_PUBLIC(cJSON_bool) cJSON_IsTrue(const cJSON * const item);
+CJSON_PUBLIC(cJSON_bool) cJSON_IsBool(const cJSON * const item);
+CJSON_PUBLIC(cJSON_bool) cJSON_IsNull(const cJSON * const item);
+CJSON_PUBLIC(cJSON_bool) cJSON_IsNumber(const cJSON * const item);
+CJSON_PUBLIC(cJSON_bool) cJSON_IsString(const cJSON * const item);
+CJSON_PUBLIC(cJSON_bool) cJSON_IsArray(const cJSON * const item);
+CJSON_PUBLIC(cJSON_bool) cJSON_IsObject(const cJSON * const item);
+CJSON_PUBLIC(cJSON_bool) cJSON_IsRaw(const cJSON * const item);
+
+/* These calls create a cJSON item of the appropriate type. */
+CJSON_PUBLIC(cJSON *) cJSON_CreateNull(void);
+CJSON_PUBLIC(cJSON *) cJSON_CreateTrue(void);
+CJSON_PUBLIC(cJSON *) cJSON_CreateFalse(void);
+CJSON_PUBLIC(cJSON *) cJSON_CreateBool(cJSON_bool boolean);
+CJSON_PUBLIC(cJSON *) cJSON_CreateNumber(double num);
+CJSON_PUBLIC(cJSON *) cJSON_CreateString(const char *string);
+/* raw json */
+CJSON_PUBLIC(cJSON *) cJSON_CreateRaw(const char *raw);
+CJSON_PUBLIC(cJSON *) cJSON_CreateArray(void);
+CJSON_PUBLIC(cJSON *) cJSON_CreateObject(void);
+
+/* Create a string where valuestring references a string so
+ * it will not be freed by cJSON_Delete */
+CJSON_PUBLIC(cJSON *) cJSON_CreateStringReference(const char *string);
+/* Create an object/array that only references it's elements so
+ * they will not be freed by cJSON_Delete */
+CJSON_PUBLIC(cJSON *) cJSON_CreateObjectReference(const cJSON *child);
+CJSON_PUBLIC(cJSON *) cJSON_CreateArrayReference(const cJSON *child);
+
+/* These utilities create an Array of count items.
+ * The parameter count cannot be greater than the number of elements in the number array, otherwise array access will be out of bounds.*/
+CJSON_PUBLIC(cJSON *) cJSON_CreateIntArray(const int *numbers, int count);
+CJSON_PUBLIC(cJSON *) cJSON_CreateFloatArray(const float *numbers, int count);
+CJSON_PUBLIC(cJSON *) cJSON_CreateDoubleArray(const double *numbers, int count);
+CJSON_PUBLIC(cJSON *) cJSON_CreateStringArray(const char *const *strings, int count);
+
+/* Append item to the specified array/object. */
+CJSON_PUBLIC(cJSON_bool) cJSON_AddItemToArray(cJSON *array, cJSON *item);
+CJSON_PUBLIC(cJSON_bool) cJSON_AddItemToObject(cJSON *object, const char *string, cJSON *item);
+/* Use this when string is definitely const (i.e. a literal, or as good as), and will definitely survive the cJSON object.
+ * WARNING: When this function was used, make sure to always check that (item->type & cJSON_StringIsConst) is zero before
+ * writing to `item->string` */
+CJSON_PUBLIC(cJSON_bool) cJSON_AddItemToObjectCS(cJSON *object, const char *string, cJSON *item);
+/* Append reference to item to the specified array/object. Use this when you want to add an existing cJSON to a new cJSON, but don't want to corrupt your existing cJSON. */
+CJSON_PUBLIC(cJSON_bool) cJSON_AddItemReferenceToArray(cJSON *array, cJSON *item);
+CJSON_PUBLIC(cJSON_bool) cJSON_AddItemReferenceToObject(cJSON *object, const char *string, cJSON *item);
+
+/* Remove/Detach items from Arrays/Objects. */
+CJSON_PUBLIC(cJSON *) cJSON_DetachItemViaPointer(cJSON *parent, cJSON * const item);
+CJSON_PUBLIC(cJSON *) cJSON_DetachItemFromArray(cJSON *array, int which);
+CJSON_PUBLIC(void) cJSON_DeleteItemFromArray(cJSON *array, int which);
+CJSON_PUBLIC(cJSON *) cJSON_DetachItemFromObject(cJSON *object, const char *string);
+CJSON_PUBLIC(cJSON *) cJSON_DetachItemFromObjectCaseSensitive(cJSON *object, const char *string);
+CJSON_PUBLIC(void) cJSON_DeleteItemFromObject(cJSON *object, const char *string);
+CJSON_PUBLIC(void) cJSON_DeleteItemFromObjectCaseSensitive(cJSON *object, const char *string);
+
+/* Update array items. */
+CJSON_PUBLIC(cJSON_bool) cJSON_InsertItemInArray(cJSON *array, int which, cJSON *newitem); /* Shifts pre-existing items to the right. */
+CJSON_PUBLIC(cJSON_bool) cJSON_ReplaceItemViaPointer(cJSON * const parent, cJSON * const item, cJSON * replacement);
+CJSON_PUBLIC(cJSON_bool) cJSON_ReplaceItemInArray(cJSON *array, int which, cJSON *newitem);
+CJSON_PUBLIC(cJSON_bool) cJSON_ReplaceItemInObject(cJSON *object,const char *string,cJSON *newitem);
+CJSON_PUBLIC(cJSON_bool) cJSON_ReplaceItemInObjectCaseSensitive(cJSON *object,const char *string,cJSON *newitem);
+
+/* Duplicate a cJSON item */
+CJSON_PUBLIC(cJSON *) cJSON_Duplicate(const cJSON *item, cJSON_bool recurse);
+/* Duplicate will create a new, identical cJSON item to the one you pass, in new memory that will
+ * need to be released. With recurse!=0, it will duplicate any children connected to the item.
+ * The item->next and ->prev pointers are always zero on return from Duplicate. */
+/* Recursively compare two cJSON items for equality. If either a or b is NULL or invalid, they will be considered unequal.
+ * case_sensitive determines if object keys are treated case sensitive (1) or case insensitive (0) */
+CJSON_PUBLIC(cJSON_bool) cJSON_Compare(const cJSON * const a, const cJSON * const b, const cJSON_bool case_sensitive);
+
+/* Minify a strings, remove blank characters(such as ' ', '\t', '\r', '\n') from strings.
+ * The input pointer json cannot point to a read-only address area, such as a string constant, 
+ * but should point to a readable and writable address area. */
+CJSON_PUBLIC(void) cJSON_Minify(char *json);
+
+/* Helper functions for creating and adding items to an object at the same time.
+ * They return the added item or NULL on failure. */
+CJSON_PUBLIC(cJSON*) cJSON_AddNullToObject(cJSON * const object, const char * const name);
+CJSON_PUBLIC(cJSON*) cJSON_AddTrueToObject(cJSON * const object, const char * const name);
+CJSON_PUBLIC(cJSON*) cJSON_AddFalseToObject(cJSON * const object, const char * const name);
+CJSON_PUBLIC(cJSON*) cJSON_AddBoolToObject(cJSON * const object, const char * const name, const cJSON_bool boolean);
+CJSON_PUBLIC(cJSON*) cJSON_AddNumberToObject(cJSON * const object, const char * const name, const double number);
+CJSON_PUBLIC(cJSON*) cJSON_AddStringToObject(cJSON * const object, const char * const name, const char * const string);
+CJSON_PUBLIC(cJSON*) cJSON_AddRawToObject(cJSON * const object, const char * const name, const char * const raw);
+CJSON_PUBLIC(cJSON*) cJSON_AddObjectToObject(cJSON * const object, const char * const name);
+CJSON_PUBLIC(cJSON*) cJSON_AddArrayToObject(cJSON * const object, const char * const name);
+
+/* When assigning an integer value, it needs to be propagated to valuedouble too. */
+#define cJSON_SetIntValue(object, number) ((object) ? (object)->valueint = (object)->valuedouble = (number) : (number))
+/* helper for the cJSON_SetNumberValue macro */
+CJSON_PUBLIC(double) cJSON_SetNumberHelper(cJSON *object, double number);
+#define cJSON_SetNumberValue(object, number) ((object != NULL) ? cJSON_SetNumberHelper(object, (double)number) : (number))
+/* Change the valuestring of a cJSON_String object, only takes effect when type of object is cJSON_String */
+CJSON_PUBLIC(char*) cJSON_SetValuestring(cJSON *object, const char *valuestring);
+
+/* If the object is not a boolean type this does nothing and returns cJSON_Invalid else it returns the new type*/
+#define cJSON_SetBoolValue(object, boolValue) ( \
+    (object != NULL && ((object)->type & (cJSON_False|cJSON_True))) ? \
+    (object)->type=((object)->type &(~(cJSON_False|cJSON_True)))|((boolValue)?cJSON_True:cJSON_False) : \
+    cJSON_Invalid\
+)
+
+/* Macro for iterating over an array or object */
+#define cJSON_ArrayForEach(element, array) for(element = (array != NULL) ? (array)->child : NULL; element != NULL; element = element->next)
+
+/* malloc/free objects using the malloc/free functions that have been set with cJSON_InitHooks */
+CJSON_PUBLIC(void *) cJSON_malloc(size_t size);
+CJSON_PUBLIC(void) cJSON_free(void *object);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

libcjson/include/cjson/cJSON_Utils.h

@@ -0,0 +1,88 @@
+/*
+  Copyright (c) 2009-2017 Dave Gamble and cJSON contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a copy
+  of this software and associated documentation files (the "Software"), to deal
+  in the Software without restriction, including without limitation the rights
+  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+  copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+  THE SOFTWARE.
+*/
+
+#ifndef cJSON_Utils__h
+#define cJSON_Utils__h
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+#include "cJSON.h"
+
+/* Implement RFC6901 (https://tools.ietf.org/html/rfc6901) JSON Pointer spec. */
+CJSON_PUBLIC(cJSON *) cJSONUtils_GetPointer(cJSON * const object, const char *pointer);
+CJSON_PUBLIC(cJSON *) cJSONUtils_GetPointerCaseSensitive(cJSON * const object, const char *pointer);
+
+/* Implement RFC6902 (https://tools.ietf.org/html/rfc6902) JSON Patch spec. */
+/* NOTE: This modifies objects in 'from' and 'to' by sorting the elements by their key */
+CJSON_PUBLIC(cJSON *) cJSONUtils_GeneratePatches(cJSON * const from, cJSON * const to);
+CJSON_PUBLIC(cJSON *) cJSONUtils_GeneratePatchesCaseSensitive(cJSON * const from, cJSON * const to);
+/* Utility for generating patch array entries. */
+CJSON_PUBLIC(void) cJSONUtils_AddPatchToArray(cJSON * const array, const char * const operation, const char * const path, const cJSON * const value);
+/* Returns 0 for success. */
+CJSON_PUBLIC(int) cJSONUtils_ApplyPatches(cJSON * const object, const cJSON * const patches);
+CJSON_PUBLIC(int) cJSONUtils_ApplyPatchesCaseSensitive(cJSON * const object, const cJSON * const patches);
+
+/*
+// Note that ApplyPatches is NOT atomic on failure. To implement an atomic ApplyPatches, use:
+//int cJSONUtils_AtomicApplyPatches(cJSON **object, cJSON *patches)
+//{
+//    cJSON *modme = cJSON_Duplicate(*object, 1);
+//    int error = cJSONUtils_ApplyPatches(modme, patches);
+//    if (!error)
+//    {
+//        cJSON_Delete(*object);
+//        *object = modme;
+//    }
+//    else
+//    {
+//        cJSON_Delete(modme);
+//    }
+//
+//    return error;
+//}
+// Code not added to library since this strategy is a LOT slower.
+*/
+
+/* Implement RFC7386 (https://tools.ietf.org/html/rfc7396) JSON Merge Patch spec. */
+/* target will be modified by patch. return value is new ptr for target. */
+CJSON_PUBLIC(cJSON *) cJSONUtils_MergePatch(cJSON *target, const cJSON * const patch);
+CJSON_PUBLIC(cJSON *) cJSONUtils_MergePatchCaseSensitive(cJSON *target, const cJSON * const patch);
+/* generates a patch to move from -> to */
+/* NOTE: This modifies objects in 'from' and 'to' by sorting the elements by their key */
+CJSON_PUBLIC(cJSON *) cJSONUtils_GenerateMergePatch(cJSON * const from, cJSON * const to);
+CJSON_PUBLIC(cJSON *) cJSONUtils_GenerateMergePatchCaseSensitive(cJSON * const from, cJSON * const to);
+
+/* Given a root object and a target object, construct a pointer from one to the other. */
+CJSON_PUBLIC(char *) cJSONUtils_FindPointerFromObjectTo(const cJSON * const object, const cJSON * const target);
+
+/* Sorts the members of the object into alphabetical order. */
+CJSON_PUBLIC(void) cJSONUtils_SortObject(cJSON * const object);
+CJSON_PUBLIC(void) cJSONUtils_SortObjectCaseSensitive(cJSON * const object);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

libcjson/lib/cmake/cJSON/cJSONConfig.cmake

@@ -0,0 +1,29 @@
+# Whether the utils lib was build.
+set(CJSON_UTILS_FOUND On)
+
+# The include directories used by cJSON
+set(CJSON_INCLUDE_DIRS "/opt/libcjson/include")
+set(CJSON_INCLUDE_DIR "/opt/libcjson/include")
+
+get_filename_component(_dir "${CMAKE_CURRENT_LIST_FILE}" PATH)
+
+# The cJSON library
+set(CJSON_LIBRARY "cjson")
+if(ON)
+  # Include the target
+  include("${_dir}/cjson.cmake")
+endif()
+
+if(CJSON_UTILS_FOUND)
+  # The cJSON utils library
+  set(CJSON_UTILS_LIBRARY cjson_utils)
+  # All cJSON libraries
+  set(CJSON_LIBRARIES "cjson_utils" "cjson")
+  if(ON)
+    # Include the target
+    include("${_dir}/cjson_utils.cmake")
+  endif()
+else()
+  # All cJSON libraries
+  set(CJSON_LIBRARIES "cjson")
+endif()

libcjson/lib/cmake/cJSON/cJSONConfigVersion.cmake

@@ -0,0 +1,11 @@
+set(PACKAGE_VERSION "1.7.18")
+
+# Check whether the requested PACKAGE_FIND_VERSION is compatible
+if("${PACKAGE_VERSION}" VERSION_LESS "${PACKAGE_FIND_VERSION}")
+  set(PACKAGE_VERSION_COMPATIBLE FALSE)
+else()
+  set(PACKAGE_VERSION_COMPATIBLE TRUE)
+  if ("${PACKAGE_VERSION}" VERSION_EQUAL "${PACKAGE_FIND_VERSION}")
+    set(PACKAGE_VERSION_EXACT TRUE)
+  endif()
+endif()

libcjson/lib/cmake/cJSON/cjson-noconfig.cmake

@@ -0,0 +1,29 @@
+#----------------------------------------------------------------
+# Generated CMake target import file.
+#----------------------------------------------------------------
+
+# Commands may need to know the format version.
+set(CMAKE_IMPORT_FILE_VERSION 1)
+
+# Import target "cjson" for configuration ""
+set_property(TARGET cjson APPEND PROPERTY IMPORTED_CONFIGURATIONS NOCONFIG)
+set_target_properties(cjson PROPERTIES
+  IMPORTED_LOCATION_NOCONFIG "/opt/libcjson/lib/libcjson.so.1.7.18"
+  IMPORTED_SONAME_NOCONFIG "libcjson.so.1"
+  )
+
+list(APPEND _cmake_import_check_targets cjson )
+list(APPEND _cmake_import_check_files_for_cjson "/opt/libcjson/lib/libcjson.so.1.7.18" )
+
+# Import target "cjson-static" for configuration ""
+set_property(TARGET cjson-static APPEND PROPERTY IMPORTED_CONFIGURATIONS NOCONFIG)
+set_target_properties(cjson-static PROPERTIES
+  IMPORTED_LINK_INTERFACE_LANGUAGES_NOCONFIG "C"
+  IMPORTED_LOCATION_NOCONFIG "/opt/libcjson/lib/libcjson.a"
+  )
+
+list(APPEND _cmake_import_check_targets cjson-static )
+list(APPEND _cmake_import_check_files_for_cjson-static "/opt/libcjson/lib/libcjson.a" )
+
+# Commands beyond this point should not need to know the version.
+set(CMAKE_IMPORT_FILE_VERSION)

libcjson/lib/cmake/cJSON/cjson.cmake

@@ -0,0 +1,108 @@
+# Generated by CMake
+
+if("${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION}" LESS 2.8)
+   message(FATAL_ERROR "CMake >= 2.8.12 required")
+endif()
+if(CMAKE_VERSION VERSION_LESS "2.8.12")
+   message(FATAL_ERROR "CMake >= 2.8.12 required")
+endif()
+cmake_policy(PUSH)
+cmake_policy(VERSION 2.8.12...3.29)
+#----------------------------------------------------------------
+# Generated CMake target import file.
+#----------------------------------------------------------------
+
+# Commands may need to know the format version.
+set(CMAKE_IMPORT_FILE_VERSION 1)
+
+# Protect against multiple inclusion, which would fail when already imported targets are added once more.
+set(_cmake_targets_defined "")
+set(_cmake_targets_not_defined "")
+set(_cmake_expected_targets "")
+foreach(_cmake_expected_target IN ITEMS cjson cjson-static)
+  list(APPEND _cmake_expected_targets "${_cmake_expected_target}")
+  if(TARGET "${_cmake_expected_target}")
+    list(APPEND _cmake_targets_defined "${_cmake_expected_target}")
+  else()
+    list(APPEND _cmake_targets_not_defined "${_cmake_expected_target}")
+  endif()
+endforeach()
+unset(_cmake_expected_target)
+if(_cmake_targets_defined STREQUAL _cmake_expected_targets)
+  unset(_cmake_targets_defined)
+  unset(_cmake_targets_not_defined)
+  unset(_cmake_expected_targets)
+  unset(CMAKE_IMPORT_FILE_VERSION)
+  cmake_policy(POP)
+  return()
+endif()
+if(NOT _cmake_targets_defined STREQUAL "")
+  string(REPLACE ";" ", " _cmake_targets_defined_text "${_cmake_targets_defined}")
+  string(REPLACE ";" ", " _cmake_targets_not_defined_text "${_cmake_targets_not_defined}")
+  message(FATAL_ERROR "Some (but not all) targets in this export set were already defined.\nTargets Defined: ${_cmake_targets_defined_text}\nTargets not yet defined: ${_cmake_targets_not_defined_text}\n")
+endif()
+unset(_cmake_targets_defined)
+unset(_cmake_targets_not_defined)
+unset(_cmake_expected_targets)
+
+
+# The installation prefix configured by this project.
+set(_IMPORT_PREFIX "/opt/libcjson")
+
+# Create imported target cjson
+add_library(cjson SHARED IMPORTED)
+
+set_target_properties(cjson PROPERTIES
+  INTERFACE_INCLUDE_DIRECTORIES "/opt/libcjson/include"
+  INTERFACE_LINK_LIBRARIES "m"
+)
+
+# Create imported target cjson-static
+add_library(cjson-static STATIC IMPORTED)
+
+set_target_properties(cjson-static PROPERTIES
+  INTERFACE_INCLUDE_DIRECTORIES "/opt/libcjson/include"
+)
+
+# Load information for each installed configuration.
+file(GLOB _cmake_config_files "${CMAKE_CURRENT_LIST_DIR}/cjson-*.cmake")
+foreach(_cmake_config_file IN LISTS _cmake_config_files)
+  include("${_cmake_config_file}")
+endforeach()
+unset(_cmake_config_file)
+unset(_cmake_config_files)
+
+# Cleanup temporary variables.
+set(_IMPORT_PREFIX)
+
+# Loop over all imported files and verify that they actually exist
+foreach(_cmake_target IN LISTS _cmake_import_check_targets)
+  if(CMAKE_VERSION VERSION_LESS "3.28"
+      OR NOT DEFINED _cmake_import_check_xcframework_for_${_cmake_target}
+      OR NOT IS_DIRECTORY "${_cmake_import_check_xcframework_for_${_cmake_target}}")
+    foreach(_cmake_file IN LISTS "_cmake_import_check_files_for_${_cmake_target}")
+      if(NOT EXISTS "${_cmake_file}")
+        message(FATAL_ERROR "The imported target \"${_cmake_target}\" references the file
+   \"${_cmake_file}\"
+but this file does not exist.  Possible reasons include:
+* The file was deleted, renamed, or moved to another location.
+* An install or uninstall procedure did not complete successfully.
+* The installation package was faulty and contained
+   \"${CMAKE_CURRENT_LIST_FILE}\"
+but not all the files it references.
+")
+      endif()
+    endforeach()
+  endif()
+  unset(_cmake_file)
+  unset("_cmake_import_check_files_for_${_cmake_target}")
+endforeach()
+unset(_cmake_target)
+unset(_cmake_import_check_targets)
+
+# This file does not depend on other imported targets which have
+# been exported from the same project but in a separate export set.
+
+# Commands beyond this point should not need to know the version.
+set(CMAKE_IMPORT_FILE_VERSION)
+cmake_policy(POP)

libcjson/lib/cmake/cJSON/cjson_utils-noconfig.cmake

@@ -0,0 +1,29 @@
+#----------------------------------------------------------------
+# Generated CMake target import file.
+#----------------------------------------------------------------
+
+# Commands may need to know the format version.
+set(CMAKE_IMPORT_FILE_VERSION 1)
+
+# Import target "cjson_utils" for configuration ""
+set_property(TARGET cjson_utils APPEND PROPERTY IMPORTED_CONFIGURATIONS NOCONFIG)
+set_target_properties(cjson_utils PROPERTIES
+  IMPORTED_LOCATION_NOCONFIG "/opt/libcjson/lib/libcjson_utils.so.1.7.18"
+  IMPORTED_SONAME_NOCONFIG "libcjson_utils.so.1"
+  )
+
+list(APPEND _cmake_import_check_targets cjson_utils )
+list(APPEND _cmake_import_check_files_for_cjson_utils "/opt/libcjson/lib/libcjson_utils.so.1.7.18" )
+
+# Import target "cjson_utils-static" for configuration ""
+set_property(TARGET cjson_utils-static APPEND PROPERTY IMPORTED_CONFIGURATIONS NOCONFIG)
+set_target_properties(cjson_utils-static PROPERTIES
+  IMPORTED_LINK_INTERFACE_LANGUAGES_NOCONFIG "C"
+  IMPORTED_LOCATION_NOCONFIG "/opt/libcjson/lib/libcjson_utils.a"
+  )
+
+list(APPEND _cmake_import_check_targets cjson_utils-static )
+list(APPEND _cmake_import_check_files_for_cjson_utils-static "/opt/libcjson/lib/libcjson_utils.a" )
+
+# Commands beyond this point should not need to know the version.
+set(CMAKE_IMPORT_FILE_VERSION)

libcjson/lib/cmake/cJSON/cjson_utils.cmake

@@ -0,0 +1,125 @@
+# Generated by CMake
+
+if("${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION}" LESS 2.8)
+   message(FATAL_ERROR "CMake >= 2.8.12 required")
+endif()
+if(CMAKE_VERSION VERSION_LESS "2.8.12")
+   message(FATAL_ERROR "CMake >= 2.8.12 required")
+endif()
+cmake_policy(PUSH)
+cmake_policy(VERSION 2.8.12...3.29)
+#----------------------------------------------------------------
+# Generated CMake target import file.
+#----------------------------------------------------------------
+
+# Commands may need to know the format version.
+set(CMAKE_IMPORT_FILE_VERSION 1)
+
+# Protect against multiple inclusion, which would fail when already imported targets are added once more.
+set(_cmake_targets_defined "")
+set(_cmake_targets_not_defined "")
+set(_cmake_expected_targets "")
+foreach(_cmake_expected_target IN ITEMS cjson_utils cjson_utils-static)
+  list(APPEND _cmake_expected_targets "${_cmake_expected_target}")
+  if(TARGET "${_cmake_expected_target}")
+    list(APPEND _cmake_targets_defined "${_cmake_expected_target}")
+  else()
+    list(APPEND _cmake_targets_not_defined "${_cmake_expected_target}")
+  endif()
+endforeach()
+unset(_cmake_expected_target)
+if(_cmake_targets_defined STREQUAL _cmake_expected_targets)
+  unset(_cmake_targets_defined)
+  unset(_cmake_targets_not_defined)
+  unset(_cmake_expected_targets)
+  unset(CMAKE_IMPORT_FILE_VERSION)
+  cmake_policy(POP)
+  return()
+endif()
+if(NOT _cmake_targets_defined STREQUAL "")
+  string(REPLACE ";" ", " _cmake_targets_defined_text "${_cmake_targets_defined}")
+  string(REPLACE ";" ", " _cmake_targets_not_defined_text "${_cmake_targets_not_defined}")
+  message(FATAL_ERROR "Some (but not all) targets in this export set were already defined.\nTargets Defined: ${_cmake_targets_defined_text}\nTargets not yet defined: ${_cmake_targets_not_defined_text}\n")
+endif()
+unset(_cmake_targets_defined)
+unset(_cmake_targets_not_defined)
+unset(_cmake_expected_targets)
+
+
+# The installation prefix configured by this project.
+set(_IMPORT_PREFIX "/opt/libcjson")
+
+# Create imported target cjson_utils
+add_library(cjson_utils SHARED IMPORTED)
+
+set_target_properties(cjson_utils PROPERTIES
+  INTERFACE_INCLUDE_DIRECTORIES "/opt/libcjson/include"
+  INTERFACE_LINK_LIBRARIES "cjson"
+)
+
+# Create imported target cjson_utils-static
+add_library(cjson_utils-static STATIC IMPORTED)
+
+set_target_properties(cjson_utils-static PROPERTIES
+  INTERFACE_INCLUDE_DIRECTORIES "/opt/libcjson/include"
+  INTERFACE_LINK_LIBRARIES "cjson-static"
+)
+
+# Load information for each installed configuration.
+file(GLOB _cmake_config_files "${CMAKE_CURRENT_LIST_DIR}/cjson_utils-*.cmake")
+foreach(_cmake_config_file IN LISTS _cmake_config_files)
+  include("${_cmake_config_file}")
+endforeach()
+unset(_cmake_config_file)
+unset(_cmake_config_files)
+
+# Cleanup temporary variables.
+set(_IMPORT_PREFIX)
+
+# Loop over all imported files and verify that they actually exist
+foreach(_cmake_target IN LISTS _cmake_import_check_targets)
+  if(CMAKE_VERSION VERSION_LESS "3.28"
+      OR NOT DEFINED _cmake_import_check_xcframework_for_${_cmake_target}
+      OR NOT IS_DIRECTORY "${_cmake_import_check_xcframework_for_${_cmake_target}}")
+    foreach(_cmake_file IN LISTS "_cmake_import_check_files_for_${_cmake_target}")
+      if(NOT EXISTS "${_cmake_file}")
+        message(FATAL_ERROR "The imported target \"${_cmake_target}\" references the file
+   \"${_cmake_file}\"
+but this file does not exist.  Possible reasons include:
+* The file was deleted, renamed, or moved to another location.
+* An install or uninstall procedure did not complete successfully.
+* The installation package was faulty and contained
+   \"${CMAKE_CURRENT_LIST_FILE}\"
+but not all the files it references.
+")
+      endif()
+    endforeach()
+  endif()
+  unset(_cmake_file)
+  unset("_cmake_import_check_files_for_${_cmake_target}")
+endforeach()
+unset(_cmake_target)
+unset(_cmake_import_check_targets)
+
+# Make sure the targets which have been exported in some other
+# export set exist.
+unset(${CMAKE_FIND_PACKAGE_NAME}_NOT_FOUND_MESSAGE_targets)
+foreach(_target "cjson" "cjson-static" )
+  if(NOT TARGET "${_target}" )
+    set(${CMAKE_FIND_PACKAGE_NAME}_NOT_FOUND_MESSAGE_targets "${${CMAKE_FIND_PACKAGE_NAME}_NOT_FOUND_MESSAGE_targets} ${_target}")
+  endif()
+endforeach()
+
+if(DEFINED ${CMAKE_FIND_PACKAGE_NAME}_NOT_FOUND_MESSAGE_targets)
+  if(CMAKE_FIND_PACKAGE_NAME)
+    set( ${CMAKE_FIND_PACKAGE_NAME}_FOUND FALSE)
+    set( ${CMAKE_FIND_PACKAGE_NAME}_NOT_FOUND_MESSAGE "The following imported targets are referenced, but are missing: ${${CMAKE_FIND_PACKAGE_NAME}_NOT_FOUND_MESSAGE_targets}")
+  else()
+    message(FATAL_ERROR "The following imported targets are referenced, but are missing: ${${CMAKE_FIND_PACKAGE_NAME}_NOT_FOUND_MESSAGE_targets}")
+  endif()
+endif()
+unset(${CMAKE_FIND_PACKAGE_NAME}_NOT_FOUND_MESSAGE_targets)
+
+# Commands beyond this point should not need to know the version.
+set(CMAKE_IMPORT_FILE_VERSION)
+cmake_policy(POP)

libcjson/lib/libcjson.so

@@ -0,0 +1 @@
+libcjson.so.1

libcjson/lib/libcjson.so.1

@@ -0,0 +1 @@
+libcjson.so.1.7.18

libcjson/lib/libcjson_utils.so

@@ -0,0 +1 @@
+libcjson_utils.so.1

libcjson/lib/libcjson_utils.so.1

@@ -0,0 +1 @@
+libcjson_utils.so.1.7.18

libcjson/lib/pkgconfig/libcjson.pc

@@ -0,0 +1,10 @@
+libdir=/opt/libcjson/lib
+includedir=/opt/libcjson/include
+
+Name: libcjson
+Version: 1.7.18
+Description: Ultralightweight JSON parser in ANSI C
+URL: https://github.com/DaveGamble/cJSON
+Libs: -L${libdir} -lcjson
+Libs.private: -lm
+Cflags: -I${includedir} -I${includedir}/cjson

libcjson/lib/pkgconfig/libcjson_utils.pc

@@ -0,0 +1,10 @@
+libdir=/opt/libcjson/lib
+includedir=/opt/libcjson/include
+
+Name: libcjson_utils
+Version: 1.7.18
+Description: An implementation of JSON Pointer, Patch and Merge Patch based on cJSON.
+URL: https://github.com/DaveGamble/cJSON
+Libs: -L${libdir} -lcjson_utils
+Cflags: -I${includedir} -I${includedir}/cjson
+Requires: libcjson

libcurl.c

@@ -0,0 +1,189 @@
+#include "libcurl.h"
+
+
+struct MemoryStruct {
+    char *memory;
+    size_t size;
+};
+
+static size_t WriteMemoryCallback(void *contents, size_t size, size_t nmemb, void *userp)
+{
+    size_t realsize = size * nmemb;
+    struct MemoryStruct *mem = (struct MemoryStruct *)userp;
+
+    // 注意这里根据每次被调用获得的数据重新动态分配缓存区的大小
+    char *ptr = realloc(mem->memory, mem->size + realsize + 1);
+    if (ptr == NULL) {
+        /* 内存不足！ */
+        printf("not enough memory (realloc returned NULL)\n");
+        return 0;
+    }
+
+    mem->memory = ptr;
+    memcpy(&(mem->memory[mem->size]), contents, realsize);
+    mem->size += realsize;
+    mem->memory[mem->size] = 0;
+
+    return realsize;
+}
+
+// 获取公网IP
+char *curl_get_area(char *ip)
+{
+    char url[256] = { 0 };
+    snprintf(url, sizeof(url), "https://qifu.baidu.com/ip/geo/v1/district?ip=%s", ip);
+    
+    
+    CURL *curl_handle;
+    CURLcode res;
+
+    struct curl_slist *headers = NULL;
+    struct MemoryStruct chunk;
+
+    chunk.memory = malloc(1);   /* 将根据上述再分配的需要增长 */
+    chunk.size = 0;             /* 此时没有数据 */
+
+    curl_global_init(CURL_GLOBAL_ALL);
+
+    /* 初始化curl会话 */
+    curl_handle = curl_easy_init();
+
+    char *p = NULL;
+    char *buff;
+
+    p = strstr(url, "-H");
+    if (p) {
+
+        buff = (char *)alloca(p - url + 1);
+        if (buff == NULL)
+            perror("out of memory.");
+
+        memset(buff, 0, p - url + 1);
+        memcpy(buff, url, (int)(p - url - 1));
+
+        // 赋值header值
+        headers = curl_slist_append(headers, p + 3);
+
+        // 设置header
+        curl_easy_setopt(curl_handle, CURLOPT_HTTPHEADER, headers);
+        curl_easy_setopt(curl_handle, CURLOPT_URL, buff);
+
+    } else {
+        /* 指定要获取的URL */
+        curl_easy_setopt(curl_handle, CURLOPT_URL, url);
+
+    }
+
+    /* 将所有数据发送到此函数  */
+    //对于同一次阻塞的curl_easy_perform而言，在写完获取的数据之前，会多次调用 WriteMemoryCallback
+    curl_easy_setopt(curl_handle, CURLOPT_WRITEFUNCTION, WriteMemoryCallback);
+
+    /* 将"chunk"结构传递给回调函数 */
+    curl_easy_setopt(curl_handle, CURLOPT_WRITEDATA, (void *)&chunk);
+
+    curl_easy_setopt(curl_handle, CURLOPT_USERAGENT, "libcurl-agent/1.0");
+
+    //对于同一次阻塞的curl_easy_perform而言，在写完获取的数据之前，会多次调用 WriteMemoryCallback
+    res = curl_easy_perform(curl_handle);
+
+    if (res != CURLE_OK) {
+        fprintf(stderr, "curl_easy_perform() failed: %s\n", curl_easy_strerror(res));
+    } else {
+        //printf("%lu bytes retrieved\n", (unsigned long)chunk.size);
+        //printf("%s", chunk.memory);
+        ;
+    }
+
+    curl_easy_cleanup(curl_handle);
+    curl_global_cleanup();
+
+    return chunk.memory;
+}
+
+// 函数用于从 cJSON 对象提取字段内容
+void parse_string_field(cJSON *parent, const char *field_name, char *output, size_t max_len) {
+    cJSON *item = cJSON_GetObjectItemCaseSensitive(parent, field_name);
+    if (cJSON_IsString(item) && item->valuestring) {
+        strncpy(output, item->valuestring, max_len - 1);
+        output[max_len - 1] = '\0'; // 确保字符串以 '\0' 结尾
+    } else {
+        output[0] = '\0'; // 如果字段不存在或不是字符串，设置为空字符串
+    }
+}
+
+// 函数用于从 JSON 字符串解析为结构体
+int parse_json_to_struct(const char *json_string, Response *response)
+{
+    if (!response) return -1;
+
+    // 初始化结构体
+    memset(response, 0, sizeof(Response));
+
+    // 解析 JSON 字符串
+    cJSON *root = cJSON_Parse(json_string);
+    if (!root) {
+        fprintf(stderr, "Error parsing JSON: %s\n", cJSON_GetErrorPtr());
+        return -1;
+    }
+
+    // 解析字段
+    parse_string_field(root, "code", response->code, sizeof(response->code));
+    parse_string_field(root, "ip", response->ip, sizeof(response->ip));
+
+    // 如果 code 不是 "Success"，直接返回
+    if (strcmp(response->code, "Success") != 0) {
+        fprintf(stderr, "Invalid code: %s\n", response->code);
+        cJSON_Delete(root);
+        return -1;
+    }
+
+    // 解析 data 对象
+    cJSON *data_item = cJSON_GetObjectItemCaseSensitive(root, "data");
+    if (cJSON_IsObject(data_item)) {
+        parse_string_field(data_item, "continent", response->data.continent, sizeof(response->data.continent));
+        parse_string_field(data_item, "country", response->data.country, sizeof(response->data.country));
+        parse_string_field(data_item, "zipcode", response->data.zipcode, sizeof(response->data.zipcode));
+        parse_string_field(data_item, "owner", response->data.owner, sizeof(response->data.owner));
+        parse_string_field(data_item, "isp", response->data.isp, sizeof(response->data.isp));
+        parse_string_field(data_item, "adcode", response->data.adcode, sizeof(response->data.adcode));
+        parse_string_field(data_item, "prov", response->data.prov, sizeof(response->data.prov));
+        parse_string_field(data_item, "city", response->data.city, sizeof(response->data.city));
+        parse_string_field(data_item, "district", response->data.district, sizeof(response->data.district));
+        parse_string_field(data_item, "region", response->data.region, sizeof(response->data.region));
+    }
+
+    snprintf(response->continent_country, 256, "%s%s", response->data.continent, response->data.country);
+    
+    // 清理 JSON 对象
+    cJSON_Delete(root);
+    return 0;
+}
+
+
+/*
+int main(int argc, char *argv[])
+{
+    char *p = curl_get_area("1.1.1.1");
+    puts(p);
+    
+    
+    // 定义 Response 结构体
+    Response response;
+
+    // 解析 JSON 到结构体
+    if (parse_json_to_struct(p, &response) == 0) {
+        // 输出解析结果
+        printf("Code: %s\n", response.code);
+        printf("IP: %s\n", response.ip);
+        printf("Continent: %s\n", response.data.continent);
+        printf("Country: %s\n", response.data.country);
+        printf("ISP: %s\n", response.data.isp);
+        printf("Region: %s\n", response.data.region);
+    } else {
+        fprintf(stderr, "Failed to parse JSON.\n");
+    }
+
+    
+    free(p);
+}
+*/

libcurl.h

@@ -0,0 +1,51 @@
+#ifndef LIBCURL_H
+#define LIBCURL_H
+
+#include <stddef.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <string.h>
+#include <time.h>
+#include <signal.h>
+#include <sys/wait.h>
+#include <curl/curl.h>
+#include <sys/types.h>
+#include <arpa/inet.h>
+#include <assert.h>
+#include <limits.h>
+#include <stdarg.h>
+
+#include <cjson/cJSON.h>
+
+// 定义嵌套的数据结构
+typedef struct {
+    char continent[64];
+    char country[64];
+    char zipcode[64];
+    char owner[64];
+    char isp[64];
+    char adcode[64];
+    char prov[64];
+    char city[64];
+    char district[64];
+    char region[64];
+} Data;
+
+// 定义主结构
+typedef struct {
+    char code[32];
+    Data data;
+    char ip[64];
+
+    char continent_country[256];
+} Response;
+
+
+extern char *curl_get_area(char *URL);
+extern int parse_json_to_struct(const char *json_string, Response *response);
+
+
+
+#endif

libcurl/bin/curl-config

@@ -0,0 +1,195 @@
+#!/bin/sh
+#***************************************************************************
+#                                  _   _ ____  _
+#  Project                     ___| | | |  _ \| |
+#                             / __| | | | |_) | |
+#                            | (__| |_| |  _ <| |___
+#                             \___|\___/|_| \_\_____|
+#
+# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
+#
+# This software is licensed as described in the file COPYING, which
+# you should have received as part of this distribution. The terms
+# are also available at https://curl.se/docs/copyright.html.
+#
+# You may opt to use, copy, modify, merge, publish, distribute and/or sell
+# copies of the Software, and permit persons to whom the Software is
+# furnished to do so, under the terms of the COPYING file.
+#
+# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+# KIND, either express or implied.
+#
+# SPDX-License-Identifier: curl
+#
+###########################################################################
+
+# shellcheck disable=SC2006
+
+prefix='/opt/libcurl'
+# Used in 'libdir'
+# shellcheck disable=SC2034
+exec_prefix="${prefix}"
+# shellcheck disable=SC2034
+includedir="${prefix}/include"
+cppflag_curl_staticlib='-DCURL_STATICLIB'
+
+usage()
+{
+  cat <<EOF
+Usage: curl-config [OPTION]
+
+Available values for OPTION include:
+
+  --built-shared says 'yes' if libcurl was built shared
+  --ca                  CA bundle install path
+  --cc                  compiler
+  --cflags              preprocessor and compiler flags
+  --checkfor [version]  check for (lib)curl of the specified version
+  --configure           the arguments given to configure when building curl
+  --features            newline separated list of enabled features
+  --help                display this help and exit
+  --libs                library linking information
+  --prefix              curl install prefix
+  --protocols           newline separated list of enabled protocols
+  --ssl-backends        output the SSL backends libcurl was built to support
+  --static-libs         static libcurl library linking information
+  --version             output version information
+  --vernum              output version as a hexadecimal number
+EOF
+
+  exit "$1"
+}
+
+if test "$#" -eq 0; then
+  usage 1
+fi
+
+while test "$#" -gt 0; do
+  case "$1" in
+  --built-shared)
+    echo 'no'
+    ;;
+
+  --ca)
+    echo '/etc/ssl/certs/ca-certificates.crt'
+    ;;
+
+  --cc)
+    echo 'clang'
+    ;;
+
+  --prefix)
+    echo "$prefix"
+    ;;
+
+  --feature|--features)
+    for feature in alt-svc AsynchDNS HSTS HTTPS-proxy IPv6 Largefile libz NTLM SSL threadsafe TLS-SRP UnixSockets zstd ''; do
+      test -n "$feature" && echo "$feature"
+    done
+    ;;
+
+  --protocols)
+    # shellcheck disable=SC2043
+    for protocol in DICT FILE FTP FTPS GOPHER GOPHERS HTTP HTTPS IMAP IMAPS IPFS IPNS MQTT POP3 POP3S RTSP SCP SFTP SMB SMBS SMTP SMTPS TELNET TFTP WS WSS; do
+      echo "$protocol"
+    done
+    ;;
+
+  --version)
+    echo 'libcurl 8.11.1'
+    exit 0
+    ;;
+
+  --checkfor)
+    checkfor="$2"
+    cmajor=`echo "$checkfor" | cut -d. -f1`
+    cminor=`echo "$checkfor" | cut -d. -f2`
+    # when extracting the patch part we strip off everything after a
+    # dash as that's used for things like version 1.2.3-pre1
+    cpatch=`echo "$checkfor" | cut -d. -f3 | cut -d- -f1`
+
+    vmajor=`echo '8.11.1' | cut -d. -f1`
+    vminor=`echo '8.11.1' | cut -d. -f2`
+    # when extracting the patch part we strip off everything after a
+    # dash as that's used for things like version 1.2.3-pre1
+    vpatch=`echo '8.11.1' | cut -d. -f3 | cut -d- -f1`
+
+    if test "$vmajor" -gt "$cmajor"; then
+      exit 0
+    fi
+    if test "$vmajor" -eq "$cmajor"; then
+      if test "$vminor" -gt "$cminor"; then
+        exit 0
+      fi
+      if test "$vminor" -eq "$cminor"; then
+        if test "$cpatch" -le "$vpatch"; then
+          exit 0
+        fi
+      fi
+    fi
+
+    echo "requested version $checkfor is newer than existing 8.11.1"
+    exit 1
+    ;;
+
+  --vernum)
+    echo '080b01'
+    exit 0
+    ;;
+
+  --help)
+    usage 0
+    ;;
+
+  --cflags)
+    if test "X$cppflag_curl_staticlib" = 'X-DCURL_STATICLIB'; then
+      CPPFLAG_CURL_STATICLIB='-DCURL_STATICLIB '
+    else
+      CPPFLAG_CURL_STATICLIB=''
+    fi
+    if test "X${prefix}/include" = 'X/usr/include'; then
+      echo "${CPPFLAG_CURL_STATICLIB}"
+    else
+      echo "${CPPFLAG_CURL_STATICLIB}-I${prefix}/include"
+    fi
+    ;;
+
+  --libs)
+    if test "X${exec_prefix}/lib" != 'X/usr/lib' -a "X${exec_prefix}/lib" != 'X/usr/lib64'; then
+      CURLLIBDIR="-L${exec_prefix}/lib "
+    else
+      CURLLIBDIR=''
+    fi
+    if test 'Xno' = 'Xno'; then
+      echo "${CURLLIBDIR}-lcurl -lssh2 -lssh2 -lgpg-error -lssl -ldl -lcrypto -ldl -lz -lssl -lcrypto -lssl -ldl -pthread -lcrypto -ldl -pthread -lzstd -lz"
+    else
+      echo "${CURLLIBDIR}-lcurl"
+    fi
+    ;;
+
+  --ssl-backends)
+    echo 'OpenSSL v3+'
+    ;;
+
+  --static-libs)
+    if test 'Xyes' != 'Xno'; then
+      echo "${exec_prefix}/lib/libcurl.a  -lssh2 -lssh2 -lgpg-error -lssl -ldl -lcrypto -ldl -lz -lssl -lcrypto -lssl -ldl -pthread -lcrypto -ldl -pthread -lzstd -lz"
+    else
+      echo 'curl was built with static libraries disabled' >&2
+      exit 1
+    fi
+    ;;
+
+  --configure)
+    echo " '--prefix=/opt/libcurl' '--disable-shared' '--enable-static' '--disable-ldap' '--enable-ipv6' '--enable-unix-sockets' '--with-ssl' '--with-libssh2' '--disable-docs' '--disable-manual' '--without-libpsl' '--without-brotli' 'CC=clang' 'LDFLAGS=-static'"
+    ;;
+
+  *)
+    echo "unknown option: $1"
+    usage 1
+    ;;
+  esac
+  shift
+done
+
+exit 0

libcurl/include/curl/curlver.h

@@ -0,0 +1,79 @@
+#ifndef CURLINC_CURLVER_H
+#define CURLINC_CURLVER_H
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
+ *
+ * This software is licensed as described in the file COPYING, which
+ * you should have received as part of this distribution. The terms
+ * are also available at https://curl.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ * SPDX-License-Identifier: curl
+ *
+ ***************************************************************************/
+
+/* This header file contains nothing but libcurl version info, generated by
+   a script at release-time. This was made its own header file in 7.11.2 */
+
+/* This is the global package copyright */
+#define LIBCURL_COPYRIGHT "Daniel Stenberg, <daniel@haxx.se>."
+
+/* This is the version number of the libcurl package from which this header
+   file origins: */
+#define LIBCURL_VERSION "8.11.1"
+
+/* The numeric version number is also available "in parts" by using these
+   defines: */
+#define LIBCURL_VERSION_MAJOR 8
+#define LIBCURL_VERSION_MINOR 11
+#define LIBCURL_VERSION_PATCH 1
+
+/* This is the numeric version of the libcurl version number, meant for easier
+   parsing and comparisons by programs. The LIBCURL_VERSION_NUM define will
+   always follow this syntax:
+
+         0xXXYYZZ
+
+   Where XX, YY and ZZ are the main version, release and patch numbers in
+   hexadecimal (using 8 bits each). All three numbers are always represented
+   using two digits. 1.2 would appear as "0x010200" while version 9.11.7
+   appears as "0x090b07".
+
+   This 6-digit (24 bits) hexadecimal number does not show pre-release number,
+   and it is always a greater number in a more recent release. It makes
+   comparisons with greater than and less than work.
+
+   Note: This define is the full hex number and _does not_ use the
+   CURL_VERSION_BITS() macro since curl's own configure script greps for it
+   and needs it to contain the full number.
+*/
+#define LIBCURL_VERSION_NUM 0x080b01
+
+/*
+ * This is the date and time when the full source package was created. The
+ * timestamp is not stored in git, as the timestamp is properly set in the
+ * tarballs by the maketgz script.
+ *
+ * The format of the date follows this template:
+ *
+ * "2007-11-23"
+ */
+#define LIBCURL_TIMESTAMP "2024-12-11"
+
+#define CURL_VERSION_BITS(x,y,z) ((x)<<16|(y)<<8|(z))
+#define CURL_AT_LEAST_VERSION(x,y,z) \
+  (LIBCURL_VERSION_NUM >= CURL_VERSION_BITS(x, y, z))
+
+#endif /* CURLINC_CURLVER_H */

libcurl/include/curl/easy.h

@@ -0,0 +1,125 @@
+#ifndef CURLINC_EASY_H
+#define CURLINC_EASY_H
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
+ *
+ * This software is licensed as described in the file COPYING, which
+ * you should have received as part of this distribution. The terms
+ * are also available at https://curl.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ * SPDX-License-Identifier: curl
+ *
+ ***************************************************************************/
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+/* Flag bits in the curl_blob struct: */
+#define CURL_BLOB_COPY   1 /* tell libcurl to copy the data */
+#define CURL_BLOB_NOCOPY 0 /* tell libcurl to NOT copy the data */
+
+struct curl_blob {
+  void *data;
+  size_t len;
+  unsigned int flags; /* bit 0 is defined, the rest are reserved and should be
+                         left zeroes */
+};
+
+CURL_EXTERN CURL *curl_easy_init(void);
+CURL_EXTERN CURLcode curl_easy_setopt(CURL *curl, CURLoption option, ...);
+CURL_EXTERN CURLcode curl_easy_perform(CURL *curl);
+CURL_EXTERN void curl_easy_cleanup(CURL *curl);
+
+/*
+ * NAME curl_easy_getinfo()
+ *
+ * DESCRIPTION
+ *
+ * Request internal information from the curl session with this function.
+ * The third argument MUST be pointing to the specific type of the used option
+ * which is documented in each manpage of the option. The data pointed to
+ * will be filled in accordingly and can be relied upon only if the function
+ * returns CURLE_OK. This function is intended to get used *AFTER* a performed
+ * transfer, all results from this function are undefined until the transfer
+ * is completed.
+ */
+CURL_EXTERN CURLcode curl_easy_getinfo(CURL *curl, CURLINFO info, ...);
+
+
+/*
+ * NAME curl_easy_duphandle()
+ *
+ * DESCRIPTION
+ *
+ * Creates a new curl session handle with the same options set for the handle
+ * passed in. Duplicating a handle could only be a matter of cloning data and
+ * options, internal state info and things like persistent connections cannot
+ * be transferred. It is useful in multithreaded applications when you can run
+ * curl_easy_duphandle() for each new thread to avoid a series of identical
+ * curl_easy_setopt() invokes in every thread.
+ */
+CURL_EXTERN CURL *curl_easy_duphandle(CURL *curl);
+
+/*
+ * NAME curl_easy_reset()
+ *
+ * DESCRIPTION
+ *
+ * Re-initializes a CURL handle to the default values. This puts back the
+ * handle to the same state as it was in when it was just created.
+ *
+ * It does keep: live connections, the Session ID cache, the DNS cache and the
+ * cookies.
+ */
+CURL_EXTERN void curl_easy_reset(CURL *curl);
+
+/*
+ * NAME curl_easy_recv()
+ *
+ * DESCRIPTION
+ *
+ * Receives data from the connected socket. Use after successful
+ * curl_easy_perform() with CURLOPT_CONNECT_ONLY option.
+ */
+CURL_EXTERN CURLcode curl_easy_recv(CURL *curl, void *buffer, size_t buflen,
+                                    size_t *n);
+
+/*
+ * NAME curl_easy_send()
+ *
+ * DESCRIPTION
+ *
+ * Sends data over the connected socket. Use after successful
+ * curl_easy_perform() with CURLOPT_CONNECT_ONLY option.
+ */
+CURL_EXTERN CURLcode curl_easy_send(CURL *curl, const void *buffer,
+                                    size_t buflen, size_t *n);
+
+
+/*
+ * NAME curl_easy_upkeep()
+ *
+ * DESCRIPTION
+ *
+ * Performs connection upkeep for the given session handle.
+ */
+CURL_EXTERN CURLcode curl_easy_upkeep(CURL *curl);
+
+#ifdef  __cplusplus
+} /* end of extern "C" */
+#endif
+
+#endif

libcurl/include/curl/header.h

@@ -0,0 +1,74 @@
+#ifndef CURLINC_HEADER_H
+#define CURLINC_HEADER_H
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
+ *
+ * This software is licensed as described in the file COPYING, which
+ * you should have received as part of this distribution. The terms
+ * are also available at https://curl.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ * SPDX-License-Identifier: curl
+ *
+ ***************************************************************************/
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+struct curl_header {
+  char *name;    /* this might not use the same case */
+  char *value;
+  size_t amount; /* number of headers using this name  */
+  size_t index;  /* ... of this instance, 0 or higher */
+  unsigned int origin; /* see bits below */
+  void *anchor; /* handle privately used by libcurl */
+};
+
+/* 'origin' bits */
+#define CURLH_HEADER    (1<<0) /* plain server header */
+#define CURLH_TRAILER   (1<<1) /* trailers */
+#define CURLH_CONNECT   (1<<2) /* CONNECT headers */
+#define CURLH_1XX       (1<<3) /* 1xx headers */
+#define CURLH_PSEUDO    (1<<4) /* pseudo headers */
+
+typedef enum {
+  CURLHE_OK,
+  CURLHE_BADINDEX,      /* header exists but not with this index */
+  CURLHE_MISSING,       /* no such header exists */
+  CURLHE_NOHEADERS,     /* no headers at all exist (yet) */
+  CURLHE_NOREQUEST,     /* no request with this number was used */
+  CURLHE_OUT_OF_MEMORY, /* out of memory while processing */
+  CURLHE_BAD_ARGUMENT,  /* a function argument was not okay */
+  CURLHE_NOT_BUILT_IN   /* if API was disabled in the build */
+} CURLHcode;
+
+CURL_EXTERN CURLHcode curl_easy_header(CURL *easy,
+                                       const char *name,
+                                       size_t index,
+                                       unsigned int origin,
+                                       int request,
+                                       struct curl_header **hout);
+
+CURL_EXTERN struct curl_header *curl_easy_nextheader(CURL *easy,
+                                                     unsigned int origin,
+                                                     int request,
+                                                     struct curl_header *prev);
+
+#ifdef __cplusplus
+} /* end of extern "C" */
+#endif
+
+#endif /* CURLINC_HEADER_H */

libcurl/include/curl/mprintf.h

@@ -0,0 +1,85 @@
+#ifndef CURLINC_MPRINTF_H
+#define CURLINC_MPRINTF_H
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
+ *
+ * This software is licensed as described in the file COPYING, which
+ * you should have received as part of this distribution. The terms
+ * are also available at https://curl.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ * SPDX-License-Identifier: curl
+ *
+ ***************************************************************************/
+
+#include <stdarg.h>
+#include <stdio.h> /* needed for FILE */
+#include "curl.h"  /* for CURL_EXTERN */
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+#ifndef CURL_TEMP_PRINTF
+#if (defined(__GNUC__) || defined(__clang__) ||                         \
+  defined(__IAR_SYSTEMS_ICC__)) &&                                      \
+  defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) &&         \
+  !defined(CURL_NO_FMT_CHECKS)
+#if defined(__MINGW32__) && !defined(__clang__)
+#if defined(__MINGW_PRINTF_FORMAT)  /* mingw-w64 3.0.0+. Needs stdio.h. */
+#define CURL_TEMP_PRINTF(fmt, arg) \
+  __attribute__((format(__MINGW_PRINTF_FORMAT, fmt, arg)))
+#else
+#define CURL_TEMP_PRINTF(fmt, arg)
+#endif
+#else
+#define CURL_TEMP_PRINTF(fmt, arg) \
+  __attribute__((format(printf, fmt, arg)))
+#endif
+#else
+#define CURL_TEMP_PRINTF(fmt, arg)
+#endif
+#endif
+
+CURL_EXTERN int curl_mprintf(const char *format, ...)
+  CURL_TEMP_PRINTF(1, 2);
+CURL_EXTERN int curl_mfprintf(FILE *fd, const char *format, ...)
+  CURL_TEMP_PRINTF(2, 3);
+CURL_EXTERN int curl_msprintf(char *buffer, const char *format, ...)
+  CURL_TEMP_PRINTF(2, 3);
+CURL_EXTERN int curl_msnprintf(char *buffer, size_t maxlength,
+                               const char *format, ...)
+  CURL_TEMP_PRINTF(3, 4);
+CURL_EXTERN int curl_mvprintf(const char *format, va_list args)
+  CURL_TEMP_PRINTF(1, 0);
+CURL_EXTERN int curl_mvfprintf(FILE *fd, const char *format, va_list args)
+  CURL_TEMP_PRINTF(2, 0);
+CURL_EXTERN int curl_mvsprintf(char *buffer, const char *format, va_list args)
+  CURL_TEMP_PRINTF(2, 0);
+CURL_EXTERN int curl_mvsnprintf(char *buffer, size_t maxlength,
+                                const char *format, va_list args)
+  CURL_TEMP_PRINTF(3, 0);
+CURL_EXTERN char *curl_maprintf(const char *format, ...)
+  CURL_TEMP_PRINTF(1, 2);
+CURL_EXTERN char *curl_mvaprintf(const char *format, va_list args)
+  CURL_TEMP_PRINTF(1, 0);
+
+#undef CURL_TEMP_PRINTF
+
+#ifdef  __cplusplus
+} /* end of extern "C" */
+#endif
+
+#endif /* CURLINC_MPRINTF_H */

libcurl/include/curl/multi.h

@@ -0,0 +1,481 @@
+#ifndef CURLINC_MULTI_H
+#define CURLINC_MULTI_H
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
+ *
+ * This software is licensed as described in the file COPYING, which
+ * you should have received as part of this distribution. The terms
+ * are also available at https://curl.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ * SPDX-License-Identifier: curl
+ *
+ ***************************************************************************/
+/*
+  This is an "external" header file. Do not give away any internals here!
+
+  GOALS
+
+  o Enable a "pull" interface. The application that uses libcurl decides where
+    and when to ask libcurl to get/send data.
+
+  o Enable multiple simultaneous transfers in the same thread without making it
+    complicated for the application.
+
+  o Enable the application to select() on its own file descriptors and curl's
+    file descriptors simultaneous easily.
+
+*/
+
+/*
+ * This header file should not really need to include "curl.h" since curl.h
+ * itself includes this file and we expect user applications to do #include
+ * <curl/curl.h> without the need for especially including multi.h.
+ *
+ * For some reason we added this include here at one point, and rather than to
+ * break existing (wrongly written) libcurl applications, we leave it as-is
+ * but with this warning attached.
+ */
+#include "curl.h"
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+typedef void CURLM;
+
+typedef enum {
+  CURLM_CALL_MULTI_PERFORM = -1, /* please call curl_multi_perform() or
+                                    curl_multi_socket*() soon */
+  CURLM_OK,
+  CURLM_BAD_HANDLE,      /* the passed-in handle is not a valid CURLM handle */
+  CURLM_BAD_EASY_HANDLE, /* an easy handle was not good/valid */
+  CURLM_OUT_OF_MEMORY,   /* if you ever get this, you are in deep sh*t */
+  CURLM_INTERNAL_ERROR,  /* this is a libcurl bug */
+  CURLM_BAD_SOCKET,      /* the passed in socket argument did not match */
+  CURLM_UNKNOWN_OPTION,  /* curl_multi_setopt() with unsupported option */
+  CURLM_ADDED_ALREADY,   /* an easy handle already added to a multi handle was
+                            attempted to get added - again */
+  CURLM_RECURSIVE_API_CALL, /* an api function was called from inside a
+                               callback */
+  CURLM_WAKEUP_FAILURE,  /* wakeup is unavailable or failed */
+  CURLM_BAD_FUNCTION_ARGUMENT, /* function called with a bad parameter */
+  CURLM_ABORTED_BY_CALLBACK,
+  CURLM_UNRECOVERABLE_POLL,
+  CURLM_LAST
+} CURLMcode;
+
+/* just to make code nicer when using curl_multi_socket() you can now check
+   for CURLM_CALL_MULTI_SOCKET too in the same style it works for
+   curl_multi_perform() and CURLM_CALL_MULTI_PERFORM */
+#define CURLM_CALL_MULTI_SOCKET CURLM_CALL_MULTI_PERFORM
+
+/* bitmask bits for CURLMOPT_PIPELINING */
+#define CURLPIPE_NOTHING   0L
+#define CURLPIPE_HTTP1     1L
+#define CURLPIPE_MULTIPLEX 2L
+
+typedef enum {
+  CURLMSG_NONE, /* first, not used */
+  CURLMSG_DONE, /* This easy handle has completed. 'result' contains
+                   the CURLcode of the transfer */
+  CURLMSG_LAST /* last, not used */
+} CURLMSG;
+
+struct CURLMsg {
+  CURLMSG msg;       /* what this message means */
+  CURL *easy_handle; /* the handle it concerns */
+  union {
+    void *whatever;    /* message-specific data */
+    CURLcode result;   /* return code for transfer */
+  } data;
+};
+typedef struct CURLMsg CURLMsg;
+
+/* Based on poll(2) structure and values.
+ * We do not use pollfd and POLL* constants explicitly
+ * to cover platforms without poll(). */
+#define CURL_WAIT_POLLIN    0x0001
+#define CURL_WAIT_POLLPRI   0x0002
+#define CURL_WAIT_POLLOUT   0x0004
+
+struct curl_waitfd {
+  curl_socket_t fd;
+  short events;
+  short revents;
+};
+
+/*
+ * Name:    curl_multi_init()
+ *
+ * Desc:    initialize multi-style curl usage
+ *
+ * Returns: a new CURLM handle to use in all 'curl_multi' functions.
+ */
+CURL_EXTERN CURLM *curl_multi_init(void);
+
+/*
+ * Name:    curl_multi_add_handle()
+ *
+ * Desc:    add a standard curl handle to the multi stack
+ *
+ * Returns: CURLMcode type, general multi error code.
+ */
+CURL_EXTERN CURLMcode curl_multi_add_handle(CURLM *multi_handle,
+                                            CURL *curl_handle);
+
+ /*
+  * Name:    curl_multi_remove_handle()
+  *
+  * Desc:    removes a curl handle from the multi stack again
+  *
+  * Returns: CURLMcode type, general multi error code.
+  */
+CURL_EXTERN CURLMcode curl_multi_remove_handle(CURLM *multi_handle,
+                                               CURL *curl_handle);
+
+ /*
+  * Name:    curl_multi_fdset()
+  *
+  * Desc:    Ask curl for its fd_set sets. The app can use these to select() or
+  *          poll() on. We want curl_multi_perform() called as soon as one of
+  *          them are ready.
+  *
+  * Returns: CURLMcode type, general multi error code.
+  */
+CURL_EXTERN CURLMcode curl_multi_fdset(CURLM *multi_handle,
+                                       fd_set *read_fd_set,
+                                       fd_set *write_fd_set,
+                                       fd_set *exc_fd_set,
+                                       int *max_fd);
+
+/*
+ * Name:     curl_multi_wait()
+ *
+ * Desc:     Poll on all fds within a CURLM set as well as any
+ *           additional fds passed to the function.
+ *
+ * Returns:  CURLMcode type, general multi error code.
+ */
+CURL_EXTERN CURLMcode curl_multi_wait(CURLM *multi_handle,
+                                      struct curl_waitfd extra_fds[],
+                                      unsigned int extra_nfds,
+                                      int timeout_ms,
+                                      int *ret);
+
+/*
+ * Name:     curl_multi_poll()
+ *
+ * Desc:     Poll on all fds within a CURLM set as well as any
+ *           additional fds passed to the function.
+ *
+ * Returns:  CURLMcode type, general multi error code.
+ */
+CURL_EXTERN CURLMcode curl_multi_poll(CURLM *multi_handle,
+                                      struct curl_waitfd extra_fds[],
+                                      unsigned int extra_nfds,
+                                      int timeout_ms,
+                                      int *ret);
+
+/*
+ * Name:     curl_multi_wakeup()
+ *
+ * Desc:     wakes up a sleeping curl_multi_poll call.
+ *
+ * Returns:  CURLMcode type, general multi error code.
+ */
+CURL_EXTERN CURLMcode curl_multi_wakeup(CURLM *multi_handle);
+
+ /*
+  * Name:    curl_multi_perform()
+  *
+  * Desc:    When the app thinks there is data available for curl it calls this
+  *          function to read/write whatever there is right now. This returns
+  *          as soon as the reads and writes are done. This function does not
+  *          require that there actually is data available for reading or that
+  *          data can be written, it can be called just in case. It returns
+  *          the number of handles that still transfer data in the second
+  *          argument's integer-pointer.
+  *
+  * Returns: CURLMcode type, general multi error code. *NOTE* that this only
+  *          returns errors etc regarding the whole multi stack. There might
+  *          still have occurred problems on individual transfers even when
+  *          this returns OK.
+  */
+CURL_EXTERN CURLMcode curl_multi_perform(CURLM *multi_handle,
+                                         int *running_handles);
+
+ /*
+  * Name:    curl_multi_cleanup()
+  *
+  * Desc:    Cleans up and removes a whole multi stack. It does not free or
+  *          touch any individual easy handles in any way. We need to define
+  *          in what state those handles will be if this function is called
+  *          in the middle of a transfer.
+  *
+  * Returns: CURLMcode type, general multi error code.
+  */
+CURL_EXTERN CURLMcode curl_multi_cleanup(CURLM *multi_handle);
+
+/*
+ * Name:    curl_multi_info_read()
+ *
+ * Desc:    Ask the multi handle if there is any messages/informationals from
+ *          the individual transfers. Messages include informationals such as
+ *          error code from the transfer or just the fact that a transfer is
+ *          completed. More details on these should be written down as well.
+ *
+ *          Repeated calls to this function will return a new struct each
+ *          time, until a special "end of msgs" struct is returned as a signal
+ *          that there is no more to get at this point.
+ *
+ *          The data the returned pointer points to will not survive calling
+ *          curl_multi_cleanup().
+ *
+ *          The 'CURLMsg' struct is meant to be simple and only contain basic
+ *          information. If more involved information is wanted, we will
+ *          provide the particular "transfer handle" in that struct and that
+ *          should/could/would be used in subsequent curl_easy_getinfo() calls
+ *          (or similar). The point being that we must never expose complex
+ *          structs to applications, as then we will undoubtably get backwards
+ *          compatibility problems in the future.
+ *
+ * Returns: A pointer to a filled-in struct, or NULL if it failed or ran out
+ *          of structs. It also writes the number of messages left in the
+ *          queue (after this read) in the integer the second argument points
+ *          to.
+ */
+CURL_EXTERN CURLMsg *curl_multi_info_read(CURLM *multi_handle,
+                                          int *msgs_in_queue);
+
+/*
+ * Name:    curl_multi_strerror()
+ *
+ * Desc:    The curl_multi_strerror function may be used to turn a CURLMcode
+ *          value into the equivalent human readable error string. This is
+ *          useful for printing meaningful error messages.
+ *
+ * Returns: A pointer to a null-terminated error message.
+ */
+CURL_EXTERN const char *curl_multi_strerror(CURLMcode);
+
+/*
+ * Name:    curl_multi_socket() and
+ *          curl_multi_socket_all()
+ *
+ * Desc:    An alternative version of curl_multi_perform() that allows the
+ *          application to pass in one of the file descriptors that have been
+ *          detected to have "action" on them and let libcurl perform.
+ *          See manpage for details.
+ */
+#define CURL_POLL_NONE   0
+#define CURL_POLL_IN     1
+#define CURL_POLL_OUT    2
+#define CURL_POLL_INOUT  3
+#define CURL_POLL_REMOVE 4
+
+#define CURL_SOCKET_TIMEOUT CURL_SOCKET_BAD
+
+#define CURL_CSELECT_IN   0x01
+#define CURL_CSELECT_OUT  0x02
+#define CURL_CSELECT_ERR  0x04
+
+typedef int (*curl_socket_callback)(CURL *easy,      /* easy handle */
+                                    curl_socket_t s, /* socket */
+                                    int what,        /* see above */
+                                    void *userp,     /* private callback
+                                                        pointer */
+                                    void *socketp);  /* private socket
+                                                        pointer */
+/*
+ * Name:    curl_multi_timer_callback
+ *
+ * Desc:    Called by libcurl whenever the library detects a change in the
+ *          maximum number of milliseconds the app is allowed to wait before
+ *          curl_multi_socket() or curl_multi_perform() must be called
+ *          (to allow libcurl's timed events to take place).
+ *
+ * Returns: The callback should return zero.
+ */
+typedef int (*curl_multi_timer_callback)(CURLM *multi,    /* multi handle */
+                                         long timeout_ms, /* see above */
+                                         void *userp);    /* private callback
+                                                             pointer */
+
+CURL_EXTERN CURLMcode CURL_DEPRECATED(7.19.5, "Use curl_multi_socket_action()")
+curl_multi_socket(CURLM *multi_handle, curl_socket_t s, int *running_handles);
+
+CURL_EXTERN CURLMcode curl_multi_socket_action(CURLM *multi_handle,
+                                               curl_socket_t s,
+                                               int ev_bitmask,
+                                               int *running_handles);
+
+CURL_EXTERN CURLMcode CURL_DEPRECATED(7.19.5, "Use curl_multi_socket_action()")
+curl_multi_socket_all(CURLM *multi_handle, int *running_handles);
+
+#ifndef CURL_ALLOW_OLD_MULTI_SOCKET
+/* This macro below was added in 7.16.3 to push users who recompile to use
+   the new curl_multi_socket_action() instead of the old curl_multi_socket()
+*/
+#define curl_multi_socket(x,y,z) curl_multi_socket_action(x,y,0,z)
+#endif
+
+/*
+ * Name:    curl_multi_timeout()
+ *
+ * Desc:    Returns the maximum number of milliseconds the app is allowed to
+ *          wait before curl_multi_socket() or curl_multi_perform() must be
+ *          called (to allow libcurl's timed events to take place).
+ *
+ * Returns: CURLM error code.
+ */
+CURL_EXTERN CURLMcode curl_multi_timeout(CURLM *multi_handle,
+                                         long *milliseconds);
+
+typedef enum {
+  /* This is the socket callback function pointer */
+  CURLOPT(CURLMOPT_SOCKETFUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 1),
+
+  /* This is the argument passed to the socket callback */
+  CURLOPT(CURLMOPT_SOCKETDATA, CURLOPTTYPE_OBJECTPOINT, 2),
+
+    /* set to 1 to enable pipelining for this multi handle */
+  CURLOPT(CURLMOPT_PIPELINING, CURLOPTTYPE_LONG, 3),
+
+   /* This is the timer callback function pointer */
+  CURLOPT(CURLMOPT_TIMERFUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 4),
+
+  /* This is the argument passed to the timer callback */
+  CURLOPT(CURLMOPT_TIMERDATA, CURLOPTTYPE_OBJECTPOINT, 5),
+
+  /* maximum number of entries in the connection cache */
+  CURLOPT(CURLMOPT_MAXCONNECTS, CURLOPTTYPE_LONG, 6),
+
+  /* maximum number of (pipelining) connections to one host */
+  CURLOPT(CURLMOPT_MAX_HOST_CONNECTIONS, CURLOPTTYPE_LONG, 7),
+
+  /* maximum number of requests in a pipeline */
+  CURLOPT(CURLMOPT_MAX_PIPELINE_LENGTH, CURLOPTTYPE_LONG, 8),
+
+  /* a connection with a content-length longer than this
+     will not be considered for pipelining */
+  CURLOPT(CURLMOPT_CONTENT_LENGTH_PENALTY_SIZE, CURLOPTTYPE_OFF_T, 9),
+
+  /* a connection with a chunk length longer than this
+     will not be considered for pipelining */
+  CURLOPT(CURLMOPT_CHUNK_LENGTH_PENALTY_SIZE, CURLOPTTYPE_OFF_T, 10),
+
+  /* a list of site names(+port) that are blocked from pipelining */
+  CURLOPT(CURLMOPT_PIPELINING_SITE_BL, CURLOPTTYPE_OBJECTPOINT, 11),
+
+  /* a list of server types that are blocked from pipelining */
+  CURLOPT(CURLMOPT_PIPELINING_SERVER_BL, CURLOPTTYPE_OBJECTPOINT, 12),
+
+  /* maximum number of open connections in total */
+  CURLOPT(CURLMOPT_MAX_TOTAL_CONNECTIONS, CURLOPTTYPE_LONG, 13),
+
+   /* This is the server push callback function pointer */
+  CURLOPT(CURLMOPT_PUSHFUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 14),
+
+  /* This is the argument passed to the server push callback */
+  CURLOPT(CURLMOPT_PUSHDATA, CURLOPTTYPE_OBJECTPOINT, 15),
+
+  /* maximum number of concurrent streams to support on a connection */
+  CURLOPT(CURLMOPT_MAX_CONCURRENT_STREAMS, CURLOPTTYPE_LONG, 16),
+
+  CURLMOPT_LASTENTRY /* the last unused */
+} CURLMoption;
+
+
+/*
+ * Name:    curl_multi_setopt()
+ *
+ * Desc:    Sets options for the multi handle.
+ *
+ * Returns: CURLM error code.
+ */
+CURL_EXTERN CURLMcode curl_multi_setopt(CURLM *multi_handle,
+                                        CURLMoption option, ...);
+
+
+/*
+ * Name:    curl_multi_assign()
+ *
+ * Desc:    This function sets an association in the multi handle between the
+ *          given socket and a private pointer of the application. This is
+ *          (only) useful for curl_multi_socket uses.
+ *
+ * Returns: CURLM error code.
+ */
+CURL_EXTERN CURLMcode curl_multi_assign(CURLM *multi_handle,
+                                        curl_socket_t sockfd, void *sockp);
+
+/*
+ * Name:    curl_multi_get_handles()
+ *
+ * Desc:    Returns an allocated array holding all handles currently added to
+ *          the multi handle. Marks the final entry with a NULL pointer. If
+ *          there is no easy handle added to the multi handle, this function
+ *          returns an array with the first entry as a NULL pointer.
+ *
+ * Returns: NULL on failure, otherwise a CURL **array pointer
+ */
+CURL_EXTERN CURL **curl_multi_get_handles(CURLM *multi_handle);
+
+/*
+ * Name: curl_push_callback
+ *
+ * Desc: This callback gets called when a new stream is being pushed by the
+ *       server. It approves or denies the new stream. It can also decide
+ *       to completely fail the connection.
+ *
+ * Returns: CURL_PUSH_OK, CURL_PUSH_DENY or CURL_PUSH_ERROROUT
+ */
+#define CURL_PUSH_OK       0
+#define CURL_PUSH_DENY     1
+#define CURL_PUSH_ERROROUT 2 /* added in 7.72.0 */
+
+struct curl_pushheaders;  /* forward declaration only */
+
+CURL_EXTERN char *curl_pushheader_bynum(struct curl_pushheaders *h,
+                                        size_t num);
+CURL_EXTERN char *curl_pushheader_byname(struct curl_pushheaders *h,
+                                         const char *name);
+
+typedef int (*curl_push_callback)(CURL *parent,
+                                  CURL *easy,
+                                  size_t num_headers,
+                                  struct curl_pushheaders *headers,
+                                  void *userp);
+
+/*
+ * Name:    curl_multi_waitfds()
+ *
+ * Desc:    Ask curl for fds for polling. The app can use these to poll on.
+ *          We want curl_multi_perform() called as soon as one of them are
+ *          ready. Passing zero size allows to get just a number of fds.
+ *
+ * Returns: CURLMcode type, general multi error code.
+ */
+CURL_EXTERN CURLMcode curl_multi_waitfds(CURLM *multi,
+                                         struct curl_waitfd *ufds,
+                                         unsigned int size,
+                                         unsigned int *fd_count);
+
+#ifdef __cplusplus
+} /* end of extern "C" */
+#endif
+
+#endif

libcurl/include/curl/options.h

@@ -0,0 +1,70 @@
+#ifndef CURLINC_OPTIONS_H
+#define CURLINC_OPTIONS_H
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
+ *
+ * This software is licensed as described in the file COPYING, which
+ * you should have received as part of this distribution. The terms
+ * are also available at https://curl.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ * SPDX-License-Identifier: curl
+ *
+ ***************************************************************************/
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+typedef enum {
+  CURLOT_LONG,    /* long (a range of values) */
+  CURLOT_VALUES,  /*      (a defined set or bitmask) */
+  CURLOT_OFF_T,   /* curl_off_t (a range of values) */
+  CURLOT_OBJECT,  /* pointer (void *) */
+  CURLOT_STRING,  /*         (char * to null-terminated buffer) */
+  CURLOT_SLIST,   /*         (struct curl_slist *) */
+  CURLOT_CBPTR,   /*         (void * passed as-is to a callback) */
+  CURLOT_BLOB,    /* blob (struct curl_blob *) */
+  CURLOT_FUNCTION /* function pointer */
+} curl_easytype;
+
+/* Flag bits */
+
+/* "alias" means it is provided for old programs to remain functional,
+   we prefer another name */
+#define CURLOT_FLAG_ALIAS (1<<0)
+
+/* The CURLOPTTYPE_* id ranges can still be used to figure out what type/size
+   to use for curl_easy_setopt() for the given id */
+struct curl_easyoption {
+  const char *name;
+  CURLoption id;
+  curl_easytype type;
+  unsigned int flags;
+};
+
+CURL_EXTERN const struct curl_easyoption *
+curl_easy_option_by_name(const char *name);
+
+CURL_EXTERN const struct curl_easyoption *
+curl_easy_option_by_id(CURLoption id);
+
+CURL_EXTERN const struct curl_easyoption *
+curl_easy_option_next(const struct curl_easyoption *prev);
+
+#ifdef __cplusplus
+} /* end of extern "C" */
+#endif
+#endif /* CURLINC_OPTIONS_H */

libcurl/include/curl/stdcheaders.h

@@ -0,0 +1,35 @@
+#ifndef CURLINC_STDCHEADERS_H
+#define CURLINC_STDCHEADERS_H
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
+ *
+ * This software is licensed as described in the file COPYING, which
+ * you should have received as part of this distribution. The terms
+ * are also available at https://curl.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ * SPDX-License-Identifier: curl
+ *
+ ***************************************************************************/
+
+#include <sys/types.h>
+
+size_t fread(void *, size_t, size_t, FILE *);
+size_t fwrite(const void *, size_t, size_t, FILE *);
+
+int strcasecmp(const char *, const char *);
+int strncasecmp(const char *, const char *, size_t);
+
+#endif /* CURLINC_STDCHEADERS_H */

libcurl/include/curl/system.h

@@ -0,0 +1,496 @@
+#ifndef CURLINC_SYSTEM_H
+#define CURLINC_SYSTEM_H
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
+ *
+ * This software is licensed as described in the file COPYING, which
+ * you should have received as part of this distribution. The terms
+ * are also available at https://curl.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ * SPDX-License-Identifier: curl
+ *
+ ***************************************************************************/
+
+/*
+ * Try to keep one section per platform, compiler and architecture, otherwise,
+ * if an existing section is reused for a different one and later on the
+ * original is adjusted, probably the piggybacking one can be adversely
+ * changed.
+ *
+ * In order to differentiate between platforms/compilers/architectures use
+ * only compiler built-in predefined preprocessor symbols.
+ *
+ * curl_off_t
+ * ----------
+ *
+ * For any given platform/compiler curl_off_t must be typedef'ed to a 64-bit
+ * wide signed integral data type. The width of this data type must remain
+ * constant and independent of any possible large file support settings.
+ *
+ * As an exception to the above, curl_off_t shall be typedef'ed to a 32-bit
+ * wide signed integral data type if there is no 64-bit type.
+ *
+ * As a general rule, curl_off_t shall not be mapped to off_t. This rule shall
+ * only be violated if off_t is the only 64-bit data type available and the
+ * size of off_t is independent of large file support settings. Keep your
+ * build on the safe side avoiding an off_t gating. If you have a 64-bit
+ * off_t then take for sure that another 64-bit data type exists, dig deeper
+ * and you will find it.
+ *
+ */
+
+#if defined(__DJGPP__) || defined(__GO32__)
+#  if defined(__DJGPP__) && (__DJGPP__ > 1)
+#    define CURL_TYPEOF_CURL_OFF_T     long long
+#    define CURL_FORMAT_CURL_OFF_T     "lld"
+#    define CURL_FORMAT_CURL_OFF_TU    "llu"
+#    define CURL_SUFFIX_CURL_OFF_T     LL
+#    define CURL_SUFFIX_CURL_OFF_TU    ULL
+#  else
+#    define CURL_TYPEOF_CURL_OFF_T     long
+#    define CURL_FORMAT_CURL_OFF_T     "ld"
+#    define CURL_FORMAT_CURL_OFF_TU    "lu"
+#    define CURL_SUFFIX_CURL_OFF_T     L
+#    define CURL_SUFFIX_CURL_OFF_TU    UL
+#  endif
+#  define CURL_TYPEOF_CURL_SOCKLEN_T int
+
+#elif defined(__SALFORDC__)
+#  define CURL_TYPEOF_CURL_OFF_T     long
+#  define CURL_FORMAT_CURL_OFF_T     "ld"
+#  define CURL_FORMAT_CURL_OFF_TU    "lu"
+#  define CURL_SUFFIX_CURL_OFF_T     L
+#  define CURL_SUFFIX_CURL_OFF_TU    UL
+#  define CURL_TYPEOF_CURL_SOCKLEN_T int
+
+#elif defined(__BORLANDC__)
+#  if (__BORLANDC__ < 0x520)
+#    define CURL_TYPEOF_CURL_OFF_T     long
+#    define CURL_FORMAT_CURL_OFF_T     "ld"
+#    define CURL_FORMAT_CURL_OFF_TU    "lu"
+#    define CURL_SUFFIX_CURL_OFF_T     L
+#    define CURL_SUFFIX_CURL_OFF_TU    UL
+#  else
+#    define CURL_TYPEOF_CURL_OFF_T     __int64
+#    define CURL_FORMAT_CURL_OFF_T     "I64d"
+#    define CURL_FORMAT_CURL_OFF_TU    "I64u"
+#    define CURL_SUFFIX_CURL_OFF_T     i64
+#    define CURL_SUFFIX_CURL_OFF_TU    ui64
+#  endif
+#  define CURL_TYPEOF_CURL_SOCKLEN_T int
+
+#elif defined(__TURBOC__)
+#  define CURL_TYPEOF_CURL_OFF_T     long
+#  define CURL_FORMAT_CURL_OFF_T     "ld"
+#  define CURL_FORMAT_CURL_OFF_TU    "lu"
+#  define CURL_SUFFIX_CURL_OFF_T     L
+#  define CURL_SUFFIX_CURL_OFF_TU    UL
+#  define CURL_TYPEOF_CURL_SOCKLEN_T int
+
+#elif defined(__POCC__)
+#  if (__POCC__ < 280)
+#    define CURL_TYPEOF_CURL_OFF_T     long
+#    define CURL_FORMAT_CURL_OFF_T     "ld"
+#    define CURL_FORMAT_CURL_OFF_TU    "lu"
+#    define CURL_SUFFIX_CURL_OFF_T     L
+#    define CURL_SUFFIX_CURL_OFF_TU    UL
+#  elif defined(_MSC_VER)
+#    define CURL_TYPEOF_CURL_OFF_T     __int64
+#    define CURL_FORMAT_CURL_OFF_T     "I64d"
+#    define CURL_FORMAT_CURL_OFF_TU    "I64u"
+#    define CURL_SUFFIX_CURL_OFF_T     i64
+#    define CURL_SUFFIX_CURL_OFF_TU    ui64
+#  else
+#    define CURL_TYPEOF_CURL_OFF_T     long long
+#    define CURL_FORMAT_CURL_OFF_T     "lld"
+#    define CURL_FORMAT_CURL_OFF_TU    "llu"
+#    define CURL_SUFFIX_CURL_OFF_T     LL
+#    define CURL_SUFFIX_CURL_OFF_TU    ULL
+#  endif
+#  define CURL_TYPEOF_CURL_SOCKLEN_T int
+
+#elif defined(__LCC__)
+#  if defined(__MCST__) /* MCST eLbrus Compiler Collection */
+#    define CURL_TYPEOF_CURL_OFF_T     long
+#    define CURL_FORMAT_CURL_OFF_T     "ld"
+#    define CURL_FORMAT_CURL_OFF_TU    "lu"
+#    define CURL_SUFFIX_CURL_OFF_T     L
+#    define CURL_SUFFIX_CURL_OFF_TU    UL
+#    define CURL_TYPEOF_CURL_SOCKLEN_T socklen_t
+#    define CURL_PULL_SYS_TYPES_H      1
+#    define CURL_PULL_SYS_SOCKET_H     1
+#  else                /* Local (or Little) C Compiler */
+#    define CURL_TYPEOF_CURL_OFF_T     long
+#    define CURL_FORMAT_CURL_OFF_T     "ld"
+#    define CURL_FORMAT_CURL_OFF_TU    "lu"
+#    define CURL_SUFFIX_CURL_OFF_T     L
+#    define CURL_SUFFIX_CURL_OFF_TU    UL
+#    define CURL_TYPEOF_CURL_SOCKLEN_T int
+#  endif
+
+#elif defined(macintosh)
+#  include <ConditionalMacros.h>
+#  if TYPE_LONGLONG
+#    define CURL_TYPEOF_CURL_OFF_T     long long
+#    define CURL_FORMAT_CURL_OFF_T     "lld"
+#    define CURL_FORMAT_CURL_OFF_TU    "llu"
+#    define CURL_SUFFIX_CURL_OFF_T     LL
+#    define CURL_SUFFIX_CURL_OFF_TU    ULL
+#  else
+#    define CURL_TYPEOF_CURL_OFF_T     long
+#    define CURL_FORMAT_CURL_OFF_T     "ld"
+#    define CURL_FORMAT_CURL_OFF_TU    "lu"
+#    define CURL_SUFFIX_CURL_OFF_T     L
+#    define CURL_SUFFIX_CURL_OFF_TU    UL
+#  endif
+#  define CURL_TYPEOF_CURL_SOCKLEN_T unsigned int
+
+#elif defined(__TANDEM)
+# if ! defined(__LP64)
+   /* Required for 32-bit NonStop builds only. */
+#  define CURL_TYPEOF_CURL_OFF_T     long long
+#  define CURL_FORMAT_CURL_OFF_T     "lld"
+#  define CURL_FORMAT_CURL_OFF_TU    "llu"
+#  define CURL_SUFFIX_CURL_OFF_T     LL
+#  define CURL_SUFFIX_CURL_OFF_TU    ULL
+#  define CURL_TYPEOF_CURL_SOCKLEN_T int
+# endif
+
+#elif defined(_WIN32_WCE)
+#  define CURL_TYPEOF_CURL_OFF_T     __int64
+#  define CURL_FORMAT_CURL_OFF_T     "I64d"
+#  define CURL_FORMAT_CURL_OFF_TU    "I64u"
+#  define CURL_SUFFIX_CURL_OFF_T     i64
+#  define CURL_SUFFIX_CURL_OFF_TU    ui64
+#  define CURL_TYPEOF_CURL_SOCKLEN_T int
+
+#elif defined(__MINGW32__)
+#  include <inttypes.h>
+#  define CURL_TYPEOF_CURL_OFF_T     long long
+#  define CURL_FORMAT_CURL_OFF_T     PRId64
+#  define CURL_FORMAT_CURL_OFF_TU    PRIu64
+#  define CURL_SUFFIX_CURL_OFF_T     LL
+#  define CURL_SUFFIX_CURL_OFF_TU    ULL
+#  define CURL_TYPEOF_CURL_SOCKLEN_T int
+#  define CURL_PULL_SYS_TYPES_H      1
+
+#elif defined(__VMS)
+#  if defined(__VAX)
+#    define CURL_TYPEOF_CURL_OFF_T     long
+#    define CURL_FORMAT_CURL_OFF_T     "ld"
+#    define CURL_FORMAT_CURL_OFF_TU    "lu"
+#    define CURL_SUFFIX_CURL_OFF_T     L
+#    define CURL_SUFFIX_CURL_OFF_TU    UL
+#  else
+#    define CURL_TYPEOF_CURL_OFF_T     long long
+#    define CURL_FORMAT_CURL_OFF_T     "lld"
+#    define CURL_FORMAT_CURL_OFF_TU    "llu"
+#    define CURL_SUFFIX_CURL_OFF_T     LL
+#    define CURL_SUFFIX_CURL_OFF_TU    ULL
+#  endif
+#  define CURL_TYPEOF_CURL_SOCKLEN_T unsigned int
+
+#elif defined(__OS400__)
+#  define CURL_TYPEOF_CURL_OFF_T     long long
+#  define CURL_FORMAT_CURL_OFF_T     "lld"
+#  define CURL_FORMAT_CURL_OFF_TU    "llu"
+#  define CURL_SUFFIX_CURL_OFF_T     LL
+#  define CURL_SUFFIX_CURL_OFF_TU    ULL
+#  define CURL_TYPEOF_CURL_SOCKLEN_T socklen_t
+#  define CURL_PULL_SYS_TYPES_H      1
+#  define CURL_PULL_SYS_SOCKET_H     1
+
+#elif defined(__MVS__)
+#  if defined(_LONG_LONG)
+#    define CURL_TYPEOF_CURL_OFF_T     long long
+#    define CURL_FORMAT_CURL_OFF_T     "lld"
+#    define CURL_FORMAT_CURL_OFF_TU    "llu"
+#    define CURL_SUFFIX_CURL_OFF_T     LL
+#    define CURL_SUFFIX_CURL_OFF_TU    ULL
+#  elif defined(_LP64)
+#    define CURL_TYPEOF_CURL_OFF_T     long
+#    define CURL_FORMAT_CURL_OFF_T     "ld"
+#    define CURL_FORMAT_CURL_OFF_TU    "lu"
+#    define CURL_SUFFIX_CURL_OFF_T     L
+#    define CURL_SUFFIX_CURL_OFF_TU    UL
+#  else
+#    define CURL_TYPEOF_CURL_OFF_T     long
+#    define CURL_FORMAT_CURL_OFF_T     "ld"
+#    define CURL_FORMAT_CURL_OFF_TU    "lu"
+#    define CURL_SUFFIX_CURL_OFF_T     L
+#    define CURL_SUFFIX_CURL_OFF_TU    UL
+#  endif
+#  define CURL_TYPEOF_CURL_SOCKLEN_T socklen_t
+#  define CURL_PULL_SYS_TYPES_H      1
+#  define CURL_PULL_SYS_SOCKET_H     1
+
+#elif defined(__370__)
+#  if defined(__IBMC__) || defined(__IBMCPP__)
+#    if defined(_ILP32)
+#    elif defined(_LP64)
+#    endif
+#    if defined(_LONG_LONG)
+#      define CURL_TYPEOF_CURL_OFF_T     long long
+#      define CURL_FORMAT_CURL_OFF_T     "lld"
+#      define CURL_FORMAT_CURL_OFF_TU    "llu"
+#      define CURL_SUFFIX_CURL_OFF_T     LL
+#      define CURL_SUFFIX_CURL_OFF_TU    ULL
+#    elif defined(_LP64)
+#      define CURL_TYPEOF_CURL_OFF_T     long
+#      define CURL_FORMAT_CURL_OFF_T     "ld"
+#      define CURL_FORMAT_CURL_OFF_TU    "lu"
+#      define CURL_SUFFIX_CURL_OFF_T     L
+#      define CURL_SUFFIX_CURL_OFF_TU    UL
+#    else
+#      define CURL_TYPEOF_CURL_OFF_T     long
+#      define CURL_FORMAT_CURL_OFF_T     "ld"
+#      define CURL_FORMAT_CURL_OFF_TU    "lu"
+#      define CURL_SUFFIX_CURL_OFF_T     L
+#      define CURL_SUFFIX_CURL_OFF_TU    UL
+#    endif
+#    define CURL_TYPEOF_CURL_SOCKLEN_T socklen_t
+#    define CURL_PULL_SYS_TYPES_H      1
+#    define CURL_PULL_SYS_SOCKET_H     1
+#  endif
+
+#elif defined(TPF)
+#  define CURL_TYPEOF_CURL_OFF_T     long
+#  define CURL_FORMAT_CURL_OFF_T     "ld"
+#  define CURL_FORMAT_CURL_OFF_TU    "lu"
+#  define CURL_SUFFIX_CURL_OFF_T     L
+#  define CURL_SUFFIX_CURL_OFF_TU    UL
+#  define CURL_TYPEOF_CURL_SOCKLEN_T int
+
+#elif defined(__TINYC__) /* also known as tcc */
+#  define CURL_TYPEOF_CURL_OFF_T     long long
+#  define CURL_FORMAT_CURL_OFF_T     "lld"
+#  define CURL_FORMAT_CURL_OFF_TU    "llu"
+#  define CURL_SUFFIX_CURL_OFF_T     LL
+#  define CURL_SUFFIX_CURL_OFF_TU    ULL
+#  define CURL_TYPEOF_CURL_SOCKLEN_T socklen_t
+#  define CURL_PULL_SYS_TYPES_H      1
+#  define CURL_PULL_SYS_SOCKET_H     1
+
+#elif defined(__SUNPRO_C) || defined(__SUNPRO_CC) /* Oracle Solaris Studio */
+#  if !defined(__LP64) && (defined(__ILP32) ||                          \
+                           defined(__i386) ||                           \
+                           defined(__sparcv8) ||                        \
+                           defined(__sparcv8plus))
+#    define CURL_TYPEOF_CURL_OFF_T     long long
+#    define CURL_FORMAT_CURL_OFF_T     "lld"
+#    define CURL_FORMAT_CURL_OFF_TU    "llu"
+#    define CURL_SUFFIX_CURL_OFF_T     LL
+#    define CURL_SUFFIX_CURL_OFF_TU    ULL
+#  elif defined(__LP64) || \
+        defined(__amd64) || defined(__sparcv9)
+#    define CURL_TYPEOF_CURL_OFF_T     long
+#    define CURL_FORMAT_CURL_OFF_T     "ld"
+#    define CURL_FORMAT_CURL_OFF_TU    "lu"
+#    define CURL_SUFFIX_CURL_OFF_T     L
+#    define CURL_SUFFIX_CURL_OFF_TU    UL
+#  endif
+#  define CURL_TYPEOF_CURL_SOCKLEN_T socklen_t
+#  define CURL_PULL_SYS_TYPES_H      1
+#  define CURL_PULL_SYS_SOCKET_H     1
+
+#elif defined(__xlc__) /* IBM xlc compiler */
+#  if !defined(_LP64)
+#    define CURL_TYPEOF_CURL_OFF_T     long long
+#    define CURL_FORMAT_CURL_OFF_T     "lld"
+#    define CURL_FORMAT_CURL_OFF_TU    "llu"
+#    define CURL_SUFFIX_CURL_OFF_T     LL
+#    define CURL_SUFFIX_CURL_OFF_TU    ULL
+#  else
+#    define CURL_TYPEOF_CURL_OFF_T     long
+#    define CURL_FORMAT_CURL_OFF_T     "ld"
+#    define CURL_FORMAT_CURL_OFF_TU    "lu"
+#    define CURL_SUFFIX_CURL_OFF_T     L
+#    define CURL_SUFFIX_CURL_OFF_TU    UL
+#  endif
+#  define CURL_TYPEOF_CURL_SOCKLEN_T socklen_t
+#  define CURL_PULL_SYS_TYPES_H      1
+#  define CURL_PULL_SYS_SOCKET_H     1
+
+#elif defined(__hpux) /* HP aCC compiler */
+#  if !defined(_LP64)
+#    define CURL_TYPEOF_CURL_OFF_T     long long
+#    define CURL_FORMAT_CURL_OFF_T     "lld"
+#    define CURL_FORMAT_CURL_OFF_TU    "llu"
+#    define CURL_SUFFIX_CURL_OFF_T     LL
+#    define CURL_SUFFIX_CURL_OFF_TU    ULL
+#  else
+#    define CURL_TYPEOF_CURL_OFF_T     long
+#    define CURL_FORMAT_CURL_OFF_T     "ld"
+#    define CURL_FORMAT_CURL_OFF_TU    "lu"
+#    define CURL_SUFFIX_CURL_OFF_T     L
+#    define CURL_SUFFIX_CURL_OFF_TU    UL
+#  endif
+#  define CURL_TYPEOF_CURL_SOCKLEN_T socklen_t
+#  define CURL_PULL_SYS_TYPES_H      1
+#  define CURL_PULL_SYS_SOCKET_H     1
+
+/* ===================================== */
+/*    KEEP MSVC THE PENULTIMATE ENTRY    */
+/* ===================================== */
+
+#elif defined(_MSC_VER)
+#  if (_MSC_VER >= 1800)
+#    include <inttypes.h>
+#    define CURL_TYPEOF_CURL_OFF_T     __int64
+#    define CURL_FORMAT_CURL_OFF_T     PRId64
+#    define CURL_FORMAT_CURL_OFF_TU    PRIu64
+#    define CURL_SUFFIX_CURL_OFF_T     i64
+#    define CURL_SUFFIX_CURL_OFF_TU    ui64
+#  elif (_MSC_VER >= 900) && (_INTEGRAL_MAX_BITS >= 64)
+#    define CURL_TYPEOF_CURL_OFF_T     __int64
+#    define CURL_FORMAT_CURL_OFF_T     "I64d"
+#    define CURL_FORMAT_CURL_OFF_TU    "I64u"
+#    define CURL_SUFFIX_CURL_OFF_T     i64
+#    define CURL_SUFFIX_CURL_OFF_TU    ui64
+#  else
+#    define CURL_TYPEOF_CURL_OFF_T     long
+#    define CURL_FORMAT_CURL_OFF_T     "ld"
+#    define CURL_FORMAT_CURL_OFF_TU    "lu"
+#    define CURL_SUFFIX_CURL_OFF_T     L
+#    define CURL_SUFFIX_CURL_OFF_TU    UL
+#  endif
+#  define CURL_TYPEOF_CURL_SOCKLEN_T int
+
+/* ===================================== */
+/*    KEEP GENERIC GCC THE LAST ENTRY    */
+/* ===================================== */
+
+#elif defined(__GNUC__) && !defined(_SCO_DS)
+#  if !defined(__LP64__) &&                                             \
+  (defined(__ILP32__) || defined(__i386__) || defined(__hppa__) ||      \
+   defined(__ppc__) || defined(__powerpc__) || defined(__arm__) ||      \
+   defined(__sparc__) || defined(__mips__) || defined(__sh__) ||        \
+   defined(__XTENSA__) ||                                               \
+   (defined(__SIZEOF_LONG__) && __SIZEOF_LONG__ == 4)  ||               \
+   (defined(__LONG_MAX__) && __LONG_MAX__ == 2147483647L))
+#    define CURL_TYPEOF_CURL_OFF_T     long long
+#    define CURL_FORMAT_CURL_OFF_T     "lld"
+#    define CURL_FORMAT_CURL_OFF_TU    "llu"
+#    define CURL_SUFFIX_CURL_OFF_T     LL
+#    define CURL_SUFFIX_CURL_OFF_TU    ULL
+#  elif defined(__LP64__) || \
+        defined(__x86_64__) || defined(__ppc64__) || defined(__sparc64__) || \
+        defined(__e2k__) || \
+        (defined(__SIZEOF_LONG__) && __SIZEOF_LONG__ == 8) || \
+        (defined(__LONG_MAX__) && __LONG_MAX__ == 9223372036854775807L)
+#    define CURL_TYPEOF_CURL_OFF_T     long
+#    define CURL_FORMAT_CURL_OFF_T     "ld"
+#    define CURL_FORMAT_CURL_OFF_TU    "lu"
+#    define CURL_SUFFIX_CURL_OFF_T     L
+#    define CURL_SUFFIX_CURL_OFF_TU    UL
+#  endif
+#  define CURL_TYPEOF_CURL_SOCKLEN_T socklen_t
+#  define CURL_PULL_SYS_TYPES_H      1
+#  define CURL_PULL_SYS_SOCKET_H     1
+
+#else
+/* generic "safe guess" on old 32-bit style */
+# define CURL_TYPEOF_CURL_OFF_T     long
+# define CURL_FORMAT_CURL_OFF_T     "ld"
+# define CURL_FORMAT_CURL_OFF_TU    "lu"
+# define CURL_SUFFIX_CURL_OFF_T     L
+# define CURL_SUFFIX_CURL_OFF_TU    UL
+# define CURL_TYPEOF_CURL_SOCKLEN_T int
+#endif
+
+#ifdef _AIX
+/* AIX needs <sys/poll.h> */
+#define CURL_PULL_SYS_POLL_H
+#endif
+
+/* CURL_PULL_SYS_TYPES_H is defined above when inclusion of header file  */
+/* sys/types.h is required here to properly make type definitions below. */
+#ifdef CURL_PULL_SYS_TYPES_H
+#  include <sys/types.h>
+#endif
+
+/* CURL_PULL_SYS_SOCKET_H is defined above when inclusion of header file  */
+/* sys/socket.h is required here to properly make type definitions below. */
+#ifdef CURL_PULL_SYS_SOCKET_H
+#  include <sys/socket.h>
+#endif
+
+/* CURL_PULL_SYS_POLL_H is defined above when inclusion of header file    */
+/* sys/poll.h is required here to properly make type definitions below.   */
+#ifdef CURL_PULL_SYS_POLL_H
+#  include <sys/poll.h>
+#endif
+
+/* Data type definition of curl_socklen_t. */
+#ifdef CURL_TYPEOF_CURL_SOCKLEN_T
+  typedef CURL_TYPEOF_CURL_SOCKLEN_T curl_socklen_t;
+#endif
+
+/* Data type definition of curl_off_t. */
+
+#ifdef CURL_TYPEOF_CURL_OFF_T
+  typedef CURL_TYPEOF_CURL_OFF_T curl_off_t;
+#endif
+
+/*
+ * CURL_ISOCPP and CURL_OFF_T_C definitions are done here in order to allow
+ * these to be visible and exported by the external libcurl interface API,
+ * while also making them visible to the library internals, simply including
+ * curl_setup.h, without actually needing to include curl.h internally.
+ * If some day this section would grow big enough, all this should be moved
+ * to its own header file.
+ */
+
+/*
+ * Figure out if we can use the ## preprocessor operator, which is supported
+ * by ISO/ANSI C and C++. Some compilers support it without setting __STDC__
+ * or  __cplusplus so we need to carefully check for them too.
+ */
+
+#if defined(__STDC__) || defined(_MSC_VER) || defined(__cplusplus) || \
+  defined(__HP_aCC) || defined(__BORLANDC__) || defined(__LCC__) || \
+  defined(__POCC__) || defined(__SALFORDC__) || defined(__HIGHC__) || \
+  defined(__ILEC400__)
+  /* This compiler is believed to have an ISO compatible preprocessor */
+#define CURL_ISOCPP
+#else
+  /* This compiler is believed NOT to have an ISO compatible preprocessor */
+#undef CURL_ISOCPP
+#endif
+
+/*
+ * Macros for minimum-width signed and unsigned curl_off_t integer constants.
+ */
+
+#if defined(__BORLANDC__) && (__BORLANDC__ == 0x0551)
+#  define CURLINC_OFF_T_C_HLPR2(x) x
+#  define CURLINC_OFF_T_C_HLPR1(x) CURLINC_OFF_T_C_HLPR2(x)
+#  define CURL_OFF_T_C(Val)  CURLINC_OFF_T_C_HLPR1(Val) ## \
+                             CURLINC_OFF_T_C_HLPR1(CURL_SUFFIX_CURL_OFF_T)
+#  define CURL_OFF_TU_C(Val) CURLINC_OFF_T_C_HLPR1(Val) ## \
+                             CURLINC_OFF_T_C_HLPR1(CURL_SUFFIX_CURL_OFF_TU)
+#else
+#  ifdef CURL_ISOCPP
+#    define CURLINC_OFF_T_C_HLPR2(Val,Suffix) Val ## Suffix
+#  else
+#    define CURLINC_OFF_T_C_HLPR2(Val,Suffix) Val/**/Suffix
+#  endif
+#  define CURLINC_OFF_T_C_HLPR1(Val,Suffix) CURLINC_OFF_T_C_HLPR2(Val,Suffix)
+#  define CURL_OFF_T_C(Val)  CURLINC_OFF_T_C_HLPR1(Val,CURL_SUFFIX_CURL_OFF_T)
+#  define CURL_OFF_TU_C(Val) CURLINC_OFF_T_C_HLPR1(Val,CURL_SUFFIX_CURL_OFF_TU)
+#endif
+
+#endif /* CURLINC_SYSTEM_H */

libcurl/include/curl/typecheck-gcc.h

@@ -0,0 +1,718 @@
+#ifndef CURLINC_TYPECHECK_GCC_H
+#define CURLINC_TYPECHECK_GCC_H
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
+ *
+ * This software is licensed as described in the file COPYING, which
+ * you should have received as part of this distribution. The terms
+ * are also available at https://curl.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ * SPDX-License-Identifier: curl
+ *
+ ***************************************************************************/
+
+/* wraps curl_easy_setopt() with typechecking */
+
+/* To add a new kind of warning, add an
+ *   if(curlcheck_sometype_option(_curl_opt))
+ *     if(!curlcheck_sometype(value))
+ *       _curl_easy_setopt_err_sometype();
+ * block and define curlcheck_sometype_option, curlcheck_sometype and
+ * _curl_easy_setopt_err_sometype below
+ *
+ * NOTE: We use two nested 'if' statements here instead of the && operator, in
+ *       order to work around gcc bug #32061. It affects only gcc 4.3.x/4.4.x
+ *       when compiling with -Wlogical-op.
+ *
+ * To add an option that uses the same type as an existing option, you will
+ * just need to extend the appropriate _curl_*_option macro
+ */
+#define curl_easy_setopt(handle, option, value)                         \
+  __extension__({                                                       \
+      CURLoption _curl_opt = (option);                                  \
+      if(__builtin_constant_p(_curl_opt)) {                             \
+        CURL_IGNORE_DEPRECATION(                                        \
+          if(curlcheck_long_option(_curl_opt))                          \
+            if(!curlcheck_long(value))                                  \
+              _curl_easy_setopt_err_long();                             \
+          if(curlcheck_off_t_option(_curl_opt))                         \
+            if(!curlcheck_off_t(value))                                 \
+              _curl_easy_setopt_err_curl_off_t();                       \
+          if(curlcheck_string_option(_curl_opt))                        \
+            if(!curlcheck_string(value))                                \
+              _curl_easy_setopt_err_string();                           \
+          if(curlcheck_write_cb_option(_curl_opt))                      \
+            if(!curlcheck_write_cb(value))                              \
+              _curl_easy_setopt_err_write_callback();                   \
+          if((_curl_opt) == CURLOPT_RESOLVER_START_FUNCTION)            \
+            if(!curlcheck_resolver_start_callback(value))               \
+              _curl_easy_setopt_err_resolver_start_callback();          \
+          if((_curl_opt) == CURLOPT_READFUNCTION)                       \
+            if(!curlcheck_read_cb(value))                               \
+              _curl_easy_setopt_err_read_cb();                          \
+          if((_curl_opt) == CURLOPT_IOCTLFUNCTION)                      \
+            if(!curlcheck_ioctl_cb(value))                              \
+              _curl_easy_setopt_err_ioctl_cb();                         \
+          if((_curl_opt) == CURLOPT_SOCKOPTFUNCTION)                    \
+            if(!curlcheck_sockopt_cb(value))                            \
+              _curl_easy_setopt_err_sockopt_cb();                       \
+          if((_curl_opt) == CURLOPT_OPENSOCKETFUNCTION)                 \
+            if(!curlcheck_opensocket_cb(value))                         \
+              _curl_easy_setopt_err_opensocket_cb();                    \
+          if((_curl_opt) == CURLOPT_PROGRESSFUNCTION)                   \
+            if(!curlcheck_progress_cb(value))                           \
+              _curl_easy_setopt_err_progress_cb();                      \
+          if((_curl_opt) == CURLOPT_DEBUGFUNCTION)                      \
+            if(!curlcheck_debug_cb(value))                              \
+              _curl_easy_setopt_err_debug_cb();                         \
+          if((_curl_opt) == CURLOPT_SSL_CTX_FUNCTION)                   \
+            if(!curlcheck_ssl_ctx_cb(value))                            \
+              _curl_easy_setopt_err_ssl_ctx_cb();                       \
+          if(curlcheck_conv_cb_option(_curl_opt))                       \
+            if(!curlcheck_conv_cb(value))                               \
+              _curl_easy_setopt_err_conv_cb();                          \
+          if((_curl_opt) == CURLOPT_SEEKFUNCTION)                       \
+            if(!curlcheck_seek_cb(value))                               \
+              _curl_easy_setopt_err_seek_cb();                          \
+          if(curlcheck_cb_data_option(_curl_opt))                       \
+            if(!curlcheck_cb_data(value))                               \
+              _curl_easy_setopt_err_cb_data();                          \
+          if((_curl_opt) == CURLOPT_ERRORBUFFER)                        \
+            if(!curlcheck_error_buffer(value))                          \
+              _curl_easy_setopt_err_error_buffer();                     \
+          if((_curl_opt) == CURLOPT_STDERR)                             \
+            if(!curlcheck_FILE(value))                                  \
+              _curl_easy_setopt_err_FILE();                             \
+          if(curlcheck_postfields_option(_curl_opt))                    \
+            if(!curlcheck_postfields(value))                            \
+              _curl_easy_setopt_err_postfields();                       \
+          if((_curl_opt) == CURLOPT_HTTPPOST)                           \
+            if(!curlcheck_arr((value), struct curl_httppost))           \
+              _curl_easy_setopt_err_curl_httpost();                     \
+          if((_curl_opt) == CURLOPT_MIMEPOST)                           \
+            if(!curlcheck_ptr((value), curl_mime))                      \
+              _curl_easy_setopt_err_curl_mimepost();                    \
+          if(curlcheck_slist_option(_curl_opt))                         \
+            if(!curlcheck_arr((value), struct curl_slist))              \
+              _curl_easy_setopt_err_curl_slist();                       \
+          if((_curl_opt) == CURLOPT_SHARE)                              \
+            if(!curlcheck_ptr((value), CURLSH))                         \
+              _curl_easy_setopt_err_CURLSH();                           \
+        )                                                               \
+      }                                                                 \
+      curl_easy_setopt(handle, _curl_opt, value);                       \
+    })
+
+/* wraps curl_easy_getinfo() with typechecking */
+#define curl_easy_getinfo(handle, info, arg)                            \
+  __extension__({                                                       \
+      CURLINFO _curl_info = (info);                                     \
+      if(__builtin_constant_p(_curl_info)) {                            \
+        CURL_IGNORE_DEPRECATION(                                        \
+          if(curlcheck_string_info(_curl_info))                         \
+            if(!curlcheck_arr((arg), char *))                           \
+              _curl_easy_getinfo_err_string();                          \
+          if(curlcheck_long_info(_curl_info))                           \
+            if(!curlcheck_arr((arg), long))                             \
+              _curl_easy_getinfo_err_long();                            \
+          if(curlcheck_double_info(_curl_info))                         \
+            if(!curlcheck_arr((arg), double))                           \
+              _curl_easy_getinfo_err_double();                          \
+          if(curlcheck_slist_info(_curl_info))                          \
+            if(!curlcheck_arr((arg), struct curl_slist *))              \
+              _curl_easy_getinfo_err_curl_slist();                      \
+          if(curlcheck_tlssessioninfo_info(_curl_info))                 \
+            if(!curlcheck_arr((arg), struct curl_tlssessioninfo *))     \
+              _curl_easy_getinfo_err_curl_tlssesssioninfo();            \
+          if(curlcheck_certinfo_info(_curl_info))                       \
+            if(!curlcheck_arr((arg), struct curl_certinfo *))           \
+              _curl_easy_getinfo_err_curl_certinfo();                   \
+          if(curlcheck_socket_info(_curl_info))                         \
+            if(!curlcheck_arr((arg), curl_socket_t))                    \
+              _curl_easy_getinfo_err_curl_socket();                     \
+          if(curlcheck_off_t_info(_curl_info))                          \
+            if(!curlcheck_arr((arg), curl_off_t))                       \
+              _curl_easy_getinfo_err_curl_off_t();                      \
+        )                                                               \
+      }                                                                 \
+      curl_easy_getinfo(handle, _curl_info, arg);                       \
+    })
+
+/*
+ * For now, just make sure that the functions are called with three arguments
+ */
+#define curl_share_setopt(share,opt,param) curl_share_setopt(share,opt,param)
+#define curl_multi_setopt(handle,opt,param) curl_multi_setopt(handle,opt,param)
+
+
+/* the actual warnings, triggered by calling the _curl_easy_setopt_err*
+ * functions */
+
+/* To define a new warning, use _CURL_WARNING(identifier, "message") */
+#define CURLWARNING(id, message)                                        \
+  static void __attribute__((__warning__(message)))                     \
+  __attribute__((__unused__)) __attribute__((__noinline__))             \
+  id(void) { __asm__(""); }
+
+CURLWARNING(_curl_easy_setopt_err_long,
+  "curl_easy_setopt expects a long argument for this option")
+CURLWARNING(_curl_easy_setopt_err_curl_off_t,
+  "curl_easy_setopt expects a curl_off_t argument for this option")
+CURLWARNING(_curl_easy_setopt_err_string,
+              "curl_easy_setopt expects a "
+              "string ('char *' or char[]) argument for this option"
+  )
+CURLWARNING(_curl_easy_setopt_err_write_callback,
+  "curl_easy_setopt expects a curl_write_callback argument for this option")
+CURLWARNING(_curl_easy_setopt_err_resolver_start_callback,
+              "curl_easy_setopt expects a "
+              "curl_resolver_start_callback argument for this option"
+  )
+CURLWARNING(_curl_easy_setopt_err_read_cb,
+  "curl_easy_setopt expects a curl_read_callback argument for this option")
+CURLWARNING(_curl_easy_setopt_err_ioctl_cb,
+  "curl_easy_setopt expects a curl_ioctl_callback argument for this option")
+CURLWARNING(_curl_easy_setopt_err_sockopt_cb,
+  "curl_easy_setopt expects a curl_sockopt_callback argument for this option")
+CURLWARNING(_curl_easy_setopt_err_opensocket_cb,
+              "curl_easy_setopt expects a "
+              "curl_opensocket_callback argument for this option"
+  )
+CURLWARNING(_curl_easy_setopt_err_progress_cb,
+  "curl_easy_setopt expects a curl_progress_callback argument for this option")
+CURLWARNING(_curl_easy_setopt_err_debug_cb,
+  "curl_easy_setopt expects a curl_debug_callback argument for this option")
+CURLWARNING(_curl_easy_setopt_err_ssl_ctx_cb,
+  "curl_easy_setopt expects a curl_ssl_ctx_callback argument for this option")
+CURLWARNING(_curl_easy_setopt_err_conv_cb,
+  "curl_easy_setopt expects a curl_conv_callback argument for this option")
+CURLWARNING(_curl_easy_setopt_err_seek_cb,
+  "curl_easy_setopt expects a curl_seek_callback argument for this option")
+CURLWARNING(_curl_easy_setopt_err_cb_data,
+              "curl_easy_setopt expects a "
+              "private data pointer as argument for this option")
+CURLWARNING(_curl_easy_setopt_err_error_buffer,
+              "curl_easy_setopt expects a "
+              "char buffer of CURL_ERROR_SIZE as argument for this option")
+CURLWARNING(_curl_easy_setopt_err_FILE,
+  "curl_easy_setopt expects a 'FILE *' argument for this option")
+CURLWARNING(_curl_easy_setopt_err_postfields,
+  "curl_easy_setopt expects a 'void *' or 'char *' argument for this option")
+CURLWARNING(_curl_easy_setopt_err_curl_httpost,
+              "curl_easy_setopt expects a 'struct curl_httppost *' "
+              "argument for this option")
+CURLWARNING(_curl_easy_setopt_err_curl_mimepost,
+              "curl_easy_setopt expects a 'curl_mime *' "
+              "argument for this option")
+CURLWARNING(_curl_easy_setopt_err_curl_slist,
+  "curl_easy_setopt expects a 'struct curl_slist *' argument for this option")
+CURLWARNING(_curl_easy_setopt_err_CURLSH,
+  "curl_easy_setopt expects a CURLSH* argument for this option")
+
+CURLWARNING(_curl_easy_getinfo_err_string,
+  "curl_easy_getinfo expects a pointer to 'char *' for this info")
+CURLWARNING(_curl_easy_getinfo_err_long,
+  "curl_easy_getinfo expects a pointer to long for this info")
+CURLWARNING(_curl_easy_getinfo_err_double,
+  "curl_easy_getinfo expects a pointer to double for this info")
+CURLWARNING(_curl_easy_getinfo_err_curl_slist,
+  "curl_easy_getinfo expects a pointer to 'struct curl_slist *' for this info")
+CURLWARNING(_curl_easy_getinfo_err_curl_tlssesssioninfo,
+              "curl_easy_getinfo expects a pointer to "
+              "'struct curl_tlssessioninfo *' for this info")
+CURLWARNING(_curl_easy_getinfo_err_curl_certinfo,
+              "curl_easy_getinfo expects a pointer to "
+              "'struct curl_certinfo *' for this info")
+CURLWARNING(_curl_easy_getinfo_err_curl_socket,
+  "curl_easy_getinfo expects a pointer to curl_socket_t for this info")
+CURLWARNING(_curl_easy_getinfo_err_curl_off_t,
+  "curl_easy_getinfo expects a pointer to curl_off_t for this info")
+
+/* groups of curl_easy_setops options that take the same type of argument */
+
+/* To add a new option to one of the groups, just add
+ *   (option) == CURLOPT_SOMETHING
+ * to the or-expression. If the option takes a long or curl_off_t, you do not
+ * have to do anything
+ */
+
+/* evaluates to true if option takes a long argument */
+#define curlcheck_long_option(option)                   \
+  (0 < (option) && (option) < CURLOPTTYPE_OBJECTPOINT)
+
+#define curlcheck_off_t_option(option)          \
+  (((option) > CURLOPTTYPE_OFF_T) && ((option) < CURLOPTTYPE_BLOB))
+
+/* evaluates to true if option takes a char* argument */
+#define curlcheck_string_option(option)                                       \
+  ((option) == CURLOPT_ABSTRACT_UNIX_SOCKET ||                                \
+   (option) == CURLOPT_ACCEPT_ENCODING ||                                     \
+   (option) == CURLOPT_ALTSVC ||                                              \
+   (option) == CURLOPT_CAINFO ||                                              \
+   (option) == CURLOPT_CAPATH ||                                              \
+   (option) == CURLOPT_COOKIE ||                                              \
+   (option) == CURLOPT_COOKIEFILE ||                                          \
+   (option) == CURLOPT_COOKIEJAR ||                                           \
+   (option) == CURLOPT_COOKIELIST ||                                          \
+   (option) == CURLOPT_CRLFILE ||                                             \
+   (option) == CURLOPT_CUSTOMREQUEST ||                                       \
+   (option) == CURLOPT_DEFAULT_PROTOCOL ||                                    \
+   (option) == CURLOPT_DNS_INTERFACE ||                                       \
+   (option) == CURLOPT_DNS_LOCAL_IP4 ||                                       \
+   (option) == CURLOPT_DNS_LOCAL_IP6 ||                                       \
+   (option) == CURLOPT_DNS_SERVERS ||                                         \
+   (option) == CURLOPT_DOH_URL ||                                             \
+   (option) == CURLOPT_ECH        ||                                          \
+   (option) == CURLOPT_EGDSOCKET ||                                           \
+   (option) == CURLOPT_FTP_ACCOUNT ||                                         \
+   (option) == CURLOPT_FTP_ALTERNATIVE_TO_USER ||                             \
+   (option) == CURLOPT_FTPPORT ||                                             \
+   (option) == CURLOPT_HSTS ||                                                \
+   (option) == CURLOPT_HAPROXY_CLIENT_IP ||                                   \
+   (option) == CURLOPT_INTERFACE ||                                           \
+   (option) == CURLOPT_ISSUERCERT ||                                          \
+   (option) == CURLOPT_KEYPASSWD ||                                           \
+   (option) == CURLOPT_KRBLEVEL ||                                            \
+   (option) == CURLOPT_LOGIN_OPTIONS ||                                       \
+   (option) == CURLOPT_MAIL_AUTH ||                                           \
+   (option) == CURLOPT_MAIL_FROM ||                                           \
+   (option) == CURLOPT_NETRC_FILE ||                                          \
+   (option) == CURLOPT_NOPROXY ||                                             \
+   (option) == CURLOPT_PASSWORD ||                                            \
+   (option) == CURLOPT_PINNEDPUBLICKEY ||                                     \
+   (option) == CURLOPT_PRE_PROXY ||                                           \
+   (option) == CURLOPT_PROTOCOLS_STR ||                                       \
+   (option) == CURLOPT_PROXY ||                                               \
+   (option) == CURLOPT_PROXY_CAINFO ||                                        \
+   (option) == CURLOPT_PROXY_CAPATH ||                                        \
+   (option) == CURLOPT_PROXY_CRLFILE ||                                       \
+   (option) == CURLOPT_PROXY_ISSUERCERT ||                                    \
+   (option) == CURLOPT_PROXY_KEYPASSWD ||                                     \
+   (option) == CURLOPT_PROXY_PINNEDPUBLICKEY ||                               \
+   (option) == CURLOPT_PROXY_SERVICE_NAME ||                                  \
+   (option) == CURLOPT_PROXY_SSL_CIPHER_LIST ||                               \
+   (option) == CURLOPT_PROXY_SSLCERT ||                                       \
+   (option) == CURLOPT_PROXY_SSLCERTTYPE ||                                   \
+   (option) == CURLOPT_PROXY_SSLKEY ||                                        \
+   (option) == CURLOPT_PROXY_SSLKEYTYPE ||                                    \
+   (option) == CURLOPT_PROXY_TLS13_CIPHERS ||                                 \
+   (option) == CURLOPT_PROXY_TLSAUTH_PASSWORD ||                              \
+   (option) == CURLOPT_PROXY_TLSAUTH_TYPE ||                                  \
+   (option) == CURLOPT_PROXY_TLSAUTH_USERNAME ||                              \
+   (option) == CURLOPT_PROXYPASSWORD ||                                       \
+   (option) == CURLOPT_PROXYUSERNAME ||                                       \
+   (option) == CURLOPT_PROXYUSERPWD ||                                        \
+   (option) == CURLOPT_RANDOM_FILE ||                                         \
+   (option) == CURLOPT_RANGE ||                                               \
+   (option) == CURLOPT_REDIR_PROTOCOLS_STR ||                                 \
+   (option) == CURLOPT_REFERER ||                                             \
+   (option) == CURLOPT_REQUEST_TARGET ||                                      \
+   (option) == CURLOPT_RTSP_SESSION_ID ||                                     \
+   (option) == CURLOPT_RTSP_STREAM_URI ||                                     \
+   (option) == CURLOPT_RTSP_TRANSPORT ||                                      \
+   (option) == CURLOPT_SASL_AUTHZID ||                                        \
+   (option) == CURLOPT_SERVICE_NAME ||                                        \
+   (option) == CURLOPT_SOCKS5_GSSAPI_SERVICE ||                               \
+   (option) == CURLOPT_SSH_HOST_PUBLIC_KEY_MD5 ||                             \
+   (option) == CURLOPT_SSH_HOST_PUBLIC_KEY_SHA256 ||                          \
+   (option) == CURLOPT_SSH_KNOWNHOSTS ||                                      \
+   (option) == CURLOPT_SSH_PRIVATE_KEYFILE ||                                 \
+   (option) == CURLOPT_SSH_PUBLIC_KEYFILE ||                                  \
+   (option) == CURLOPT_SSLCERT ||                                             \
+   (option) == CURLOPT_SSLCERTTYPE ||                                         \
+   (option) == CURLOPT_SSLENGINE ||                                           \
+   (option) == CURLOPT_SSLKEY ||                                              \
+   (option) == CURLOPT_SSLKEYTYPE ||                                          \
+   (option) == CURLOPT_SSL_CIPHER_LIST ||                                     \
+   (option) == CURLOPT_TLS13_CIPHERS ||                                       \
+   (option) == CURLOPT_TLSAUTH_PASSWORD ||                                    \
+   (option) == CURLOPT_TLSAUTH_TYPE ||                                        \
+   (option) == CURLOPT_TLSAUTH_USERNAME ||                                    \
+   (option) == CURLOPT_UNIX_SOCKET_PATH ||                                    \
+   (option) == CURLOPT_URL ||                                                 \
+   (option) == CURLOPT_USERAGENT ||                                           \
+   (option) == CURLOPT_USERNAME ||                                            \
+   (option) == CURLOPT_AWS_SIGV4 ||                                           \
+   (option) == CURLOPT_USERPWD ||                                             \
+   (option) == CURLOPT_XOAUTH2_BEARER ||                                      \
+   (option) == CURLOPT_SSL_EC_CURVES ||                                       \
+   0)
+
+/* evaluates to true if option takes a curl_write_callback argument */
+#define curlcheck_write_cb_option(option)                               \
+  ((option) == CURLOPT_HEADERFUNCTION ||                                \
+   (option) == CURLOPT_WRITEFUNCTION)
+
+/* evaluates to true if option takes a curl_conv_callback argument */
+#define curlcheck_conv_cb_option(option)                                \
+  ((option) == CURLOPT_CONV_TO_NETWORK_FUNCTION ||                      \
+   (option) == CURLOPT_CONV_FROM_NETWORK_FUNCTION ||                    \
+   (option) == CURLOPT_CONV_FROM_UTF8_FUNCTION)
+
+/* evaluates to true if option takes a data argument to pass to a callback */
+#define curlcheck_cb_data_option(option)                                      \
+  ((option) == CURLOPT_CHUNK_DATA ||                                          \
+   (option) == CURLOPT_CLOSESOCKETDATA ||                                     \
+   (option) == CURLOPT_DEBUGDATA ||                                           \
+   (option) == CURLOPT_FNMATCH_DATA ||                                        \
+   (option) == CURLOPT_HEADERDATA ||                                          \
+   (option) == CURLOPT_HSTSREADDATA ||                                        \
+   (option) == CURLOPT_HSTSWRITEDATA ||                                       \
+   (option) == CURLOPT_INTERLEAVEDATA ||                                      \
+   (option) == CURLOPT_IOCTLDATA ||                                           \
+   (option) == CURLOPT_OPENSOCKETDATA ||                                      \
+   (option) == CURLOPT_PREREQDATA ||                                          \
+   (option) == CURLOPT_PROGRESSDATA ||                                        \
+   (option) == CURLOPT_READDATA ||                                            \
+   (option) == CURLOPT_SEEKDATA ||                                            \
+   (option) == CURLOPT_SOCKOPTDATA ||                                         \
+   (option) == CURLOPT_SSH_KEYDATA ||                                         \
+   (option) == CURLOPT_SSL_CTX_DATA ||                                        \
+   (option) == CURLOPT_WRITEDATA ||                                           \
+   (option) == CURLOPT_RESOLVER_START_DATA ||                                 \
+   (option) == CURLOPT_TRAILERDATA ||                                         \
+   (option) == CURLOPT_SSH_HOSTKEYDATA ||                                     \
+   0)
+
+/* evaluates to true if option takes a POST data argument (void* or char*) */
+#define curlcheck_postfields_option(option)                                   \
+  ((option) == CURLOPT_POSTFIELDS ||                                          \
+   (option) == CURLOPT_COPYPOSTFIELDS ||                                      \
+   0)
+
+/* evaluates to true if option takes a struct curl_slist * argument */
+#define curlcheck_slist_option(option)                                        \
+  ((option) == CURLOPT_HTTP200ALIASES ||                                      \
+   (option) == CURLOPT_HTTPHEADER ||                                          \
+   (option) == CURLOPT_MAIL_RCPT ||                                           \
+   (option) == CURLOPT_POSTQUOTE ||                                           \
+   (option) == CURLOPT_PREQUOTE ||                                            \
+   (option) == CURLOPT_PROXYHEADER ||                                         \
+   (option) == CURLOPT_QUOTE ||                                               \
+   (option) == CURLOPT_RESOLVE ||                                             \
+   (option) == CURLOPT_TELNETOPTIONS ||                                       \
+   (option) == CURLOPT_CONNECT_TO ||                                          \
+   0)
+
+/* groups of curl_easy_getinfo infos that take the same type of argument */
+
+/* evaluates to true if info expects a pointer to char * argument */
+#define curlcheck_string_info(info)                             \
+  (CURLINFO_STRING < (info) && (info) < CURLINFO_LONG &&        \
+   (info) != CURLINFO_PRIVATE)
+
+/* evaluates to true if info expects a pointer to long argument */
+#define curlcheck_long_info(info)                       \
+  (CURLINFO_LONG < (info) && (info) < CURLINFO_DOUBLE)
+
+/* evaluates to true if info expects a pointer to double argument */
+#define curlcheck_double_info(info)                     \
+  (CURLINFO_DOUBLE < (info) && (info) < CURLINFO_SLIST)
+
+/* true if info expects a pointer to struct curl_slist * argument */
+#define curlcheck_slist_info(info)                                      \
+  (((info) == CURLINFO_SSL_ENGINES) || ((info) == CURLINFO_COOKIELIST))
+
+/* true if info expects a pointer to struct curl_tlssessioninfo * argument */
+#define curlcheck_tlssessioninfo_info(info)                              \
+  (((info) == CURLINFO_TLS_SSL_PTR) || ((info) == CURLINFO_TLS_SESSION))
+
+/* true if info expects a pointer to struct curl_certinfo * argument */
+#define curlcheck_certinfo_info(info) ((info) == CURLINFO_CERTINFO)
+
+/* true if info expects a pointer to struct curl_socket_t argument */
+#define curlcheck_socket_info(info)                     \
+  (CURLINFO_SOCKET < (info) && (info) < CURLINFO_OFF_T)
+
+/* true if info expects a pointer to curl_off_t argument */
+#define curlcheck_off_t_info(info)              \
+  (CURLINFO_OFF_T < (info))
+
+
+/* typecheck helpers -- check whether given expression has requested type */
+
+/* For pointers, you can use the curlcheck_ptr/curlcheck_arr macros,
+ * otherwise define a new macro. Search for __builtin_types_compatible_p
+ * in the GCC manual.
+ * NOTE: these macros MUST NOT EVALUATE their arguments! The argument is
+ * the actual expression passed to the curl_easy_setopt macro. This
+ * means that you can only apply the sizeof and __typeof__ operators, no
+ * == or whatsoever.
+ */
+
+/* XXX: should evaluate to true if expr is a pointer */
+#define curlcheck_any_ptr(expr)                 \
+  (sizeof(expr) == sizeof(void *))
+
+/* evaluates to true if expr is NULL */
+/* XXX: must not evaluate expr, so this check is not accurate */
+#define curlcheck_NULL(expr)                                            \
+  (__builtin_types_compatible_p(__typeof__(expr), __typeof__(NULL)))
+
+/* evaluates to true if expr is type*, const type* or NULL */
+#define curlcheck_ptr(expr, type)                                       \
+  (curlcheck_NULL(expr) ||                                              \
+   __builtin_types_compatible_p(__typeof__(expr), type *) ||            \
+   __builtin_types_compatible_p(__typeof__(expr), const type *))
+
+/* evaluates to true if expr is one of type[], type*, NULL or const type* */
+#define curlcheck_arr(expr, type)                                       \
+  (curlcheck_ptr((expr), type) ||                                       \
+   __builtin_types_compatible_p(__typeof__(expr), type []))
+
+/* evaluates to true if expr is a string */
+#define curlcheck_string(expr)                                          \
+  (curlcheck_arr((expr), char) ||                                       \
+   curlcheck_arr((expr), signed char) ||                                \
+   curlcheck_arr((expr), unsigned char))
+
+/* evaluates to true if expr is a long (no matter the signedness)
+ * XXX: for now, int is also accepted (and therefore short and char, which
+ * are promoted to int when passed to a variadic function) */
+#define curlcheck_long(expr)                                                  \
+  (__builtin_types_compatible_p(__typeof__(expr), long) ||                    \
+   __builtin_types_compatible_p(__typeof__(expr), signed long) ||             \
+   __builtin_types_compatible_p(__typeof__(expr), unsigned long) ||           \
+   __builtin_types_compatible_p(__typeof__(expr), int) ||                     \
+   __builtin_types_compatible_p(__typeof__(expr), signed int) ||              \
+   __builtin_types_compatible_p(__typeof__(expr), unsigned int) ||            \
+   __builtin_types_compatible_p(__typeof__(expr), short) ||                   \
+   __builtin_types_compatible_p(__typeof__(expr), signed short) ||            \
+   __builtin_types_compatible_p(__typeof__(expr), unsigned short) ||          \
+   __builtin_types_compatible_p(__typeof__(expr), char) ||                    \
+   __builtin_types_compatible_p(__typeof__(expr), signed char) ||             \
+   __builtin_types_compatible_p(__typeof__(expr), unsigned char))
+
+/* evaluates to true if expr is of type curl_off_t */
+#define curlcheck_off_t(expr)                                   \
+  (__builtin_types_compatible_p(__typeof__(expr), curl_off_t))
+
+/* evaluates to true if expr is abuffer suitable for CURLOPT_ERRORBUFFER */
+/* XXX: also check size of an char[] array? */
+#define curlcheck_error_buffer(expr)                                    \
+  (curlcheck_NULL(expr) ||                                              \
+   __builtin_types_compatible_p(__typeof__(expr), char *) ||            \
+   __builtin_types_compatible_p(__typeof__(expr), char[]))
+
+/* evaluates to true if expr is of type (const) void* or (const) FILE* */
+#if 0
+#define curlcheck_cb_data(expr)                                         \
+  (curlcheck_ptr((expr), void) ||                                       \
+   curlcheck_ptr((expr), FILE))
+#else /* be less strict */
+#define curlcheck_cb_data(expr)                 \
+  curlcheck_any_ptr(expr)
+#endif
+
+/* evaluates to true if expr is of type FILE* */
+#define curlcheck_FILE(expr)                                            \
+  (curlcheck_NULL(expr) ||                                              \
+   (__builtin_types_compatible_p(__typeof__(expr), FILE *)))
+
+/* evaluates to true if expr can be passed as POST data (void* or char*) */
+#define curlcheck_postfields(expr)                                      \
+  (curlcheck_ptr((expr), void) ||                                       \
+   curlcheck_arr((expr), char) ||                                       \
+   curlcheck_arr((expr), unsigned char))
+
+/* helper: __builtin_types_compatible_p distinguishes between functions and
+ * function pointers, hide it */
+#define curlcheck_cb_compatible(func, type)                             \
+  (__builtin_types_compatible_p(__typeof__(func), type) ||              \
+   __builtin_types_compatible_p(__typeof__(func) *, type))
+
+/* evaluates to true if expr is of type curl_resolver_start_callback */
+#define curlcheck_resolver_start_callback(expr)       \
+  (curlcheck_NULL(expr) || \
+   curlcheck_cb_compatible((expr), curl_resolver_start_callback))
+
+/* evaluates to true if expr is of type curl_read_callback or "similar" */
+#define curlcheck_read_cb(expr)                                         \
+  (curlcheck_NULL(expr) ||                                              \
+   curlcheck_cb_compatible((expr), __typeof__(fread) *) ||              \
+   curlcheck_cb_compatible((expr), curl_read_callback) ||               \
+   curlcheck_cb_compatible((expr), _curl_read_callback1) ||             \
+   curlcheck_cb_compatible((expr), _curl_read_callback2) ||             \
+   curlcheck_cb_compatible((expr), _curl_read_callback3) ||             \
+   curlcheck_cb_compatible((expr), _curl_read_callback4) ||             \
+   curlcheck_cb_compatible((expr), _curl_read_callback5) ||             \
+   curlcheck_cb_compatible((expr), _curl_read_callback6))
+typedef size_t (*_curl_read_callback1)(char *, size_t, size_t, void *);
+typedef size_t (*_curl_read_callback2)(char *, size_t, size_t, const void *);
+typedef size_t (*_curl_read_callback3)(char *, size_t, size_t, FILE *);
+typedef size_t (*_curl_read_callback4)(void *, size_t, size_t, void *);
+typedef size_t (*_curl_read_callback5)(void *, size_t, size_t, const void *);
+typedef size_t (*_curl_read_callback6)(void *, size_t, size_t, FILE *);
+
+/* evaluates to true if expr is of type curl_write_callback or "similar" */
+#define curlcheck_write_cb(expr)                                        \
+  (curlcheck_read_cb(expr) ||                                           \
+   curlcheck_cb_compatible((expr), __typeof__(fwrite) *) ||             \
+   curlcheck_cb_compatible((expr), curl_write_callback) ||              \
+   curlcheck_cb_compatible((expr), _curl_write_callback1) ||            \
+   curlcheck_cb_compatible((expr), _curl_write_callback2) ||            \
+   curlcheck_cb_compatible((expr), _curl_write_callback3) ||            \
+   curlcheck_cb_compatible((expr), _curl_write_callback4) ||            \
+   curlcheck_cb_compatible((expr), _curl_write_callback5) ||            \
+   curlcheck_cb_compatible((expr), _curl_write_callback6))
+typedef size_t (*_curl_write_callback1)(const char *, size_t, size_t, void *);
+typedef size_t (*_curl_write_callback2)(const char *, size_t, size_t,
+                                       const void *);
+typedef size_t (*_curl_write_callback3)(const char *, size_t, size_t, FILE *);
+typedef size_t (*_curl_write_callback4)(const void *, size_t, size_t, void *);
+typedef size_t (*_curl_write_callback5)(const void *, size_t, size_t,
+                                       const void *);
+typedef size_t (*_curl_write_callback6)(const void *, size_t, size_t, FILE *);
+
+/* evaluates to true if expr is of type curl_ioctl_callback or "similar" */
+#define curlcheck_ioctl_cb(expr)                                        \
+  (curlcheck_NULL(expr) ||                                              \
+   curlcheck_cb_compatible((expr), curl_ioctl_callback) ||              \
+   curlcheck_cb_compatible((expr), _curl_ioctl_callback1) ||            \
+   curlcheck_cb_compatible((expr), _curl_ioctl_callback2) ||            \
+   curlcheck_cb_compatible((expr), _curl_ioctl_callback3) ||            \
+   curlcheck_cb_compatible((expr), _curl_ioctl_callback4))
+typedef curlioerr (*_curl_ioctl_callback1)(CURL *, int, void *);
+typedef curlioerr (*_curl_ioctl_callback2)(CURL *, int, const void *);
+typedef curlioerr (*_curl_ioctl_callback3)(CURL *, curliocmd, void *);
+typedef curlioerr (*_curl_ioctl_callback4)(CURL *, curliocmd, const void *);
+
+/* evaluates to true if expr is of type curl_sockopt_callback or "similar" */
+#define curlcheck_sockopt_cb(expr)                                      \
+  (curlcheck_NULL(expr) ||                                              \
+   curlcheck_cb_compatible((expr), curl_sockopt_callback) ||            \
+   curlcheck_cb_compatible((expr), _curl_sockopt_callback1) ||          \
+   curlcheck_cb_compatible((expr), _curl_sockopt_callback2))
+typedef int (*_curl_sockopt_callback1)(void *, curl_socket_t, curlsocktype);
+typedef int (*_curl_sockopt_callback2)(const void *, curl_socket_t,
+                                      curlsocktype);
+
+/* evaluates to true if expr is of type curl_opensocket_callback or
+   "similar" */
+#define curlcheck_opensocket_cb(expr)                                   \
+  (curlcheck_NULL(expr) ||                                              \
+   curlcheck_cb_compatible((expr), curl_opensocket_callback) ||         \
+   curlcheck_cb_compatible((expr), _curl_opensocket_callback1) ||       \
+   curlcheck_cb_compatible((expr), _curl_opensocket_callback2) ||       \
+   curlcheck_cb_compatible((expr), _curl_opensocket_callback3) ||       \
+   curlcheck_cb_compatible((expr), _curl_opensocket_callback4))
+typedef curl_socket_t (*_curl_opensocket_callback1)
+  (void *, curlsocktype, struct curl_sockaddr *);
+typedef curl_socket_t (*_curl_opensocket_callback2)
+  (void *, curlsocktype, const struct curl_sockaddr *);
+typedef curl_socket_t (*_curl_opensocket_callback3)
+  (const void *, curlsocktype, struct curl_sockaddr *);
+typedef curl_socket_t (*_curl_opensocket_callback4)
+  (const void *, curlsocktype, const struct curl_sockaddr *);
+
+/* evaluates to true if expr is of type curl_progress_callback or "similar" */
+#define curlcheck_progress_cb(expr)                                     \
+  (curlcheck_NULL(expr) ||                                              \
+   curlcheck_cb_compatible((expr), curl_progress_callback) ||           \
+   curlcheck_cb_compatible((expr), _curl_progress_callback1) ||         \
+   curlcheck_cb_compatible((expr), _curl_progress_callback2))
+typedef int (*_curl_progress_callback1)(void *,
+    double, double, double, double);
+typedef int (*_curl_progress_callback2)(const void *,
+    double, double, double, double);
+
+/* evaluates to true if expr is of type curl_debug_callback or "similar" */
+#define curlcheck_debug_cb(expr)                                        \
+  (curlcheck_NULL(expr) ||                                              \
+   curlcheck_cb_compatible((expr), curl_debug_callback) ||              \
+   curlcheck_cb_compatible((expr), _curl_debug_callback1) ||            \
+   curlcheck_cb_compatible((expr), _curl_debug_callback2) ||            \
+   curlcheck_cb_compatible((expr), _curl_debug_callback3) ||            \
+   curlcheck_cb_compatible((expr), _curl_debug_callback4) ||            \
+   curlcheck_cb_compatible((expr), _curl_debug_callback5) ||            \
+   curlcheck_cb_compatible((expr), _curl_debug_callback6) ||            \
+   curlcheck_cb_compatible((expr), _curl_debug_callback7) ||            \
+   curlcheck_cb_compatible((expr), _curl_debug_callback8))
+typedef int (*_curl_debug_callback1) (CURL *,
+    curl_infotype, char *, size_t, void *);
+typedef int (*_curl_debug_callback2) (CURL *,
+    curl_infotype, char *, size_t, const void *);
+typedef int (*_curl_debug_callback3) (CURL *,
+    curl_infotype, const char *, size_t, void *);
+typedef int (*_curl_debug_callback4) (CURL *,
+    curl_infotype, const char *, size_t, const void *);
+typedef int (*_curl_debug_callback5) (CURL *,
+    curl_infotype, unsigned char *, size_t, void *);
+typedef int (*_curl_debug_callback6) (CURL *,
+    curl_infotype, unsigned char *, size_t, const void *);
+typedef int (*_curl_debug_callback7) (CURL *,
+    curl_infotype, const unsigned char *, size_t, void *);
+typedef int (*_curl_debug_callback8) (CURL *,
+    curl_infotype, const unsigned char *, size_t, const void *);
+
+/* evaluates to true if expr is of type curl_ssl_ctx_callback or "similar" */
+/* this is getting even messier... */
+#define curlcheck_ssl_ctx_cb(expr)                                      \
+  (curlcheck_NULL(expr) ||                                              \
+   curlcheck_cb_compatible((expr), curl_ssl_ctx_callback) ||            \
+   curlcheck_cb_compatible((expr), _curl_ssl_ctx_callback1) ||          \
+   curlcheck_cb_compatible((expr), _curl_ssl_ctx_callback2) ||          \
+   curlcheck_cb_compatible((expr), _curl_ssl_ctx_callback3) ||          \
+   curlcheck_cb_compatible((expr), _curl_ssl_ctx_callback4) ||          \
+   curlcheck_cb_compatible((expr), _curl_ssl_ctx_callback5) ||          \
+   curlcheck_cb_compatible((expr), _curl_ssl_ctx_callback6) ||          \
+   curlcheck_cb_compatible((expr), _curl_ssl_ctx_callback7) ||          \
+   curlcheck_cb_compatible((expr), _curl_ssl_ctx_callback8))
+typedef CURLcode (*_curl_ssl_ctx_callback1)(CURL *, void *, void *);
+typedef CURLcode (*_curl_ssl_ctx_callback2)(CURL *, void *, const void *);
+typedef CURLcode (*_curl_ssl_ctx_callback3)(CURL *, const void *, void *);
+typedef CURLcode (*_curl_ssl_ctx_callback4)(CURL *, const void *,
+                                            const void *);
+#ifdef HEADER_SSL_H
+/* hack: if we included OpenSSL's ssl.h, we know about SSL_CTX
+ * this will of course break if we are included before OpenSSL headers...
+ */
+typedef CURLcode (*_curl_ssl_ctx_callback5)(CURL *, SSL_CTX *, void *);
+typedef CURLcode (*_curl_ssl_ctx_callback6)(CURL *, SSL_CTX *, const void *);
+typedef CURLcode (*_curl_ssl_ctx_callback7)(CURL *, const SSL_CTX *, void *);
+typedef CURLcode (*_curl_ssl_ctx_callback8)(CURL *, const SSL_CTX *,
+                                            const void *);
+#else
+typedef _curl_ssl_ctx_callback1 _curl_ssl_ctx_callback5;
+typedef _curl_ssl_ctx_callback1 _curl_ssl_ctx_callback6;
+typedef _curl_ssl_ctx_callback1 _curl_ssl_ctx_callback7;
+typedef _curl_ssl_ctx_callback1 _curl_ssl_ctx_callback8;
+#endif
+
+/* evaluates to true if expr is of type curl_conv_callback or "similar" */
+#define curlcheck_conv_cb(expr)                                         \
+  (curlcheck_NULL(expr) ||                                              \
+   curlcheck_cb_compatible((expr), curl_conv_callback) ||               \
+   curlcheck_cb_compatible((expr), _curl_conv_callback1) ||             \
+   curlcheck_cb_compatible((expr), _curl_conv_callback2) ||             \
+   curlcheck_cb_compatible((expr), _curl_conv_callback3) ||             \
+   curlcheck_cb_compatible((expr), _curl_conv_callback4))
+typedef CURLcode (*_curl_conv_callback1)(char *, size_t length);
+typedef CURLcode (*_curl_conv_callback2)(const char *, size_t length);
+typedef CURLcode (*_curl_conv_callback3)(void *, size_t length);
+typedef CURLcode (*_curl_conv_callback4)(const void *, size_t length);
+
+/* evaluates to true if expr is of type curl_seek_callback or "similar" */
+#define curlcheck_seek_cb(expr)                                         \
+  (curlcheck_NULL(expr) ||                                              \
+   curlcheck_cb_compatible((expr), curl_seek_callback) ||               \
+   curlcheck_cb_compatible((expr), _curl_seek_callback1) ||             \
+   curlcheck_cb_compatible((expr), _curl_seek_callback2))
+typedef CURLcode (*_curl_seek_callback1)(void *, curl_off_t, int);
+typedef CURLcode (*_curl_seek_callback2)(const void *, curl_off_t, int);
+
+
+#endif /* CURLINC_TYPECHECK_GCC_H */

libcurl/include/curl/urlapi.h

@@ -0,0 +1,155 @@
+#ifndef CURLINC_URLAPI_H
+#define CURLINC_URLAPI_H
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
+ *
+ * This software is licensed as described in the file COPYING, which
+ * you should have received as part of this distribution. The terms
+ * are also available at https://curl.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ * SPDX-License-Identifier: curl
+ *
+ ***************************************************************************/
+
+#include "curl.h"
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+/* the error codes for the URL API */
+typedef enum {
+  CURLUE_OK,
+  CURLUE_BAD_HANDLE,          /* 1 */
+  CURLUE_BAD_PARTPOINTER,     /* 2 */
+  CURLUE_MALFORMED_INPUT,     /* 3 */
+  CURLUE_BAD_PORT_NUMBER,     /* 4 */
+  CURLUE_UNSUPPORTED_SCHEME,  /* 5 */
+  CURLUE_URLDECODE,           /* 6 */
+  CURLUE_OUT_OF_MEMORY,       /* 7 */
+  CURLUE_USER_NOT_ALLOWED,    /* 8 */
+  CURLUE_UNKNOWN_PART,        /* 9 */
+  CURLUE_NO_SCHEME,           /* 10 */
+  CURLUE_NO_USER,             /* 11 */
+  CURLUE_NO_PASSWORD,         /* 12 */
+  CURLUE_NO_OPTIONS,          /* 13 */
+  CURLUE_NO_HOST,             /* 14 */
+  CURLUE_NO_PORT,             /* 15 */
+  CURLUE_NO_QUERY,            /* 16 */
+  CURLUE_NO_FRAGMENT,         /* 17 */
+  CURLUE_NO_ZONEID,           /* 18 */
+  CURLUE_BAD_FILE_URL,        /* 19 */
+  CURLUE_BAD_FRAGMENT,        /* 20 */
+  CURLUE_BAD_HOSTNAME,        /* 21 */
+  CURLUE_BAD_IPV6,            /* 22 */
+  CURLUE_BAD_LOGIN,           /* 23 */
+  CURLUE_BAD_PASSWORD,        /* 24 */
+  CURLUE_BAD_PATH,            /* 25 */
+  CURLUE_BAD_QUERY,           /* 26 */
+  CURLUE_BAD_SCHEME,          /* 27 */
+  CURLUE_BAD_SLASHES,         /* 28 */
+  CURLUE_BAD_USER,            /* 29 */
+  CURLUE_LACKS_IDN,           /* 30 */
+  CURLUE_TOO_LARGE,           /* 31 */
+  CURLUE_LAST
+} CURLUcode;
+
+typedef enum {
+  CURLUPART_URL,
+  CURLUPART_SCHEME,
+  CURLUPART_USER,
+  CURLUPART_PASSWORD,
+  CURLUPART_OPTIONS,
+  CURLUPART_HOST,
+  CURLUPART_PORT,
+  CURLUPART_PATH,
+  CURLUPART_QUERY,
+  CURLUPART_FRAGMENT,
+  CURLUPART_ZONEID /* added in 7.65.0 */
+} CURLUPart;
+
+#define CURLU_DEFAULT_PORT (1<<0)       /* return default port number */
+#define CURLU_NO_DEFAULT_PORT (1<<1)    /* act as if no port number was set,
+                                           if the port number matches the
+                                           default for the scheme */
+#define CURLU_DEFAULT_SCHEME (1<<2)     /* return default scheme if
+                                           missing */
+#define CURLU_NON_SUPPORT_SCHEME (1<<3) /* allow non-supported scheme */
+#define CURLU_PATH_AS_IS (1<<4)         /* leave dot sequences */
+#define CURLU_DISALLOW_USER (1<<5)      /* no user+password allowed */
+#define CURLU_URLDECODE (1<<6)          /* URL decode on get */
+#define CURLU_URLENCODE (1<<7)          /* URL encode on set */
+#define CURLU_APPENDQUERY (1<<8)        /* append a form style part */
+#define CURLU_GUESS_SCHEME (1<<9)       /* legacy curl-style guessing */
+#define CURLU_NO_AUTHORITY (1<<10)      /* Allow empty authority when the
+                                           scheme is unknown. */
+#define CURLU_ALLOW_SPACE (1<<11)       /* Allow spaces in the URL */
+#define CURLU_PUNYCODE (1<<12)          /* get the hostname in punycode */
+#define CURLU_PUNY2IDN (1<<13)          /* punycode => IDN conversion */
+#define CURLU_GET_EMPTY (1<<14)         /* allow empty queries and fragments
+                                           when extracting the URL or the
+                                           components */
+#define CURLU_NO_GUESS_SCHEME (1<<15)   /* for get, do not accept a guess */
+
+typedef struct Curl_URL CURLU;
+
+/*
+ * curl_url() creates a new CURLU handle and returns a pointer to it.
+ * Must be freed with curl_url_cleanup().
+ */
+CURL_EXTERN CURLU *curl_url(void);
+
+/*
+ * curl_url_cleanup() frees the CURLU handle and related resources used for
+ * the URL parsing. It will not free strings previously returned with the URL
+ * API.
+ */
+CURL_EXTERN void curl_url_cleanup(CURLU *handle);
+
+/*
+ * curl_url_dup() duplicates a CURLU handle and returns a new copy. The new
+ * handle must also be freed with curl_url_cleanup().
+ */
+CURL_EXTERN CURLU *curl_url_dup(const CURLU *in);
+
+/*
+ * curl_url_get() extracts a specific part of the URL from a CURLU
+ * handle. Returns error code. The returned pointer MUST be freed with
+ * curl_free() afterwards.
+ */
+CURL_EXTERN CURLUcode curl_url_get(const CURLU *handle, CURLUPart what,
+                                   char **part, unsigned int flags);
+
+/*
+ * curl_url_set() sets a specific part of the URL in a CURLU handle. Returns
+ * error code. The passed in string will be copied. Passing a NULL instead of
+ * a part string, clears that part.
+ */
+CURL_EXTERN CURLUcode curl_url_set(CURLU *handle, CURLUPart what,
+                                   const char *part, unsigned int flags);
+
+/*
+ * curl_url_strerror() turns a CURLUcode value into the equivalent human
+ * readable error string. This is useful for printing meaningful error
+ * messages.
+ */
+CURL_EXTERN const char *curl_url_strerror(CURLUcode);
+
+#ifdef __cplusplus
+} /* end of extern "C" */
+#endif
+
+#endif /* CURLINC_URLAPI_H */

libcurl/include/curl/websockets.h

@@ -0,0 +1,84 @@
+#ifndef CURLINC_WEBSOCKETS_H
+#define CURLINC_WEBSOCKETS_H
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
+ *
+ * This software is licensed as described in the file COPYING, which
+ * you should have received as part of this distribution. The terms
+ * are also available at https://curl.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ * SPDX-License-Identifier: curl
+ *
+ ***************************************************************************/
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+struct curl_ws_frame {
+  int age;              /* zero */
+  int flags;            /* See the CURLWS_* defines */
+  curl_off_t offset;    /* the offset of this data into the frame */
+  curl_off_t bytesleft; /* number of pending bytes left of the payload */
+  size_t len;           /* size of the current data chunk */
+};
+
+/* flag bits */
+#define CURLWS_TEXT       (1<<0)
+#define CURLWS_BINARY     (1<<1)
+#define CURLWS_CONT       (1<<2)
+#define CURLWS_CLOSE      (1<<3)
+#define CURLWS_PING       (1<<4)
+#define CURLWS_OFFSET     (1<<5)
+
+/*
+ * NAME curl_ws_recv()
+ *
+ * DESCRIPTION
+ *
+ * Receives data from the websocket connection. Use after successful
+ * curl_easy_perform() with CURLOPT_CONNECT_ONLY option.
+ */
+CURL_EXTERN CURLcode curl_ws_recv(CURL *curl, void *buffer, size_t buflen,
+                                  size_t *recv,
+                                  const struct curl_ws_frame **metap);
+
+/* flags for curl_ws_send() */
+#define CURLWS_PONG       (1<<6)
+
+/*
+ * NAME curl_ws_send()
+ *
+ * DESCRIPTION
+ *
+ * Sends data over the websocket connection. Use after successful
+ * curl_easy_perform() with CURLOPT_CONNECT_ONLY option.
+ */
+CURL_EXTERN CURLcode curl_ws_send(CURL *curl, const void *buffer,
+                                  size_t buflen, size_t *sent,
+                                  curl_off_t fragsize,
+                                  unsigned int flags);
+
+/* bits for the CURLOPT_WS_OPTIONS bitmask: */
+#define CURLWS_RAW_MODE (1<<0)
+
+CURL_EXTERN const struct curl_ws_frame *curl_ws_meta(CURL *curl);
+
+#ifdef  __cplusplus
+}
+#endif
+
+#endif /* CURLINC_WEBSOCKETS_H */

libcurl/lib/libcurl.la

@@ -0,0 +1,41 @@
+# libcurl.la - a libtool library file
+# Generated by libtool (GNU libtool) 2.4.7 Debian-2.4.7-7~deb12u1
+#
+# Please DO NOT delete this file!
+# It is necessary for linking the library.
+
+# The name that we can dlopen(3).
+dlname=''
+
+# Names of this library.
+library_names=''
+
+# The name of the static archive.
+old_library='libcurl.a'
+
+# Linker flags that cannot go in dependency_libs.
+inherited_linker_flags=' -pthread'
+
+# Libraries that this one depends upon.
+dependency_libs=' -lssh2 -lgpg-error -lssl -lcrypto -ldl -lzstd -lz'
+
+# Names of additional weak libraries provided by this library
+weak_library_names=''
+
+# Version information for libcurl.
+current=12
+age=8
+revision=0
+
+# Is this an already installed library?
+installed=yes
+
+# Should we warn about portability when linking against -modules?
+shouldnotlink=no
+
+# Files to dlopen/dlpreopen
+dlopen=''
+dlpreopen=''
+
+# Directory that this library needs to be installed in:
+libdir='/opt/libcurl/lib'

libcurl/lib/pkgconfig/libcurl.pc

@@ -0,0 +1,41 @@
+#***************************************************************************
+#                                  _   _ ____  _
+#  Project                     ___| | | |  _ \| |
+#                             / __| | | | |_) | |
+#                            | (__| |_| |  _ <| |___
+#                             \___|\___/|_| \_\_____|
+#
+# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
+#
+# This software is licensed as described in the file COPYING, which
+# you should have received as part of this distribution. The terms
+# are also available at https://curl.se/docs/copyright.html.
+#
+# You may opt to use, copy, modify, merge, publish, distribute and/or sell
+# copies of the Software, and permit persons to whom the Software is
+# furnished to do so, under the terms of the COPYING file.
+#
+# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+# KIND, either express or implied.
+#
+# SPDX-License-Identifier: curl
+#
+###########################################################################
+
+prefix=/opt/libcurl
+exec_prefix=${prefix}
+libdir=${exec_prefix}/lib
+includedir=${prefix}/include
+supported_protocols="DICT FILE FTP FTPS GOPHER GOPHERS HTTP HTTPS IMAP IMAPS IPFS IPNS MQTT POP3 POP3S RTSP SCP SFTP SMB SMBS SMTP SMTPS TELNET TFTP WS WSS"
+supported_features="alt-svc AsynchDNS HSTS HTTPS-proxy IPv6 Largefile libz NTLM SSL threadsafe TLS-SRP UnixSockets zstd"
+
+Name: libcurl
+URL: https://curl.se/
+Description: Library to transfer files with HTTP, FTP, etc.
+Version: 8.11.1
+Requires: zlib,libzstd,openssl,libssh2
+Requires.private: zlib,libzstd,openssl,libssh2
+Libs: -L${libdir} -lcurl -lssh2 -lssh2 -lgpg-error -lssl -ldl -lcrypto -ldl -lz  -lssl -lcrypto -lssl -ldl -pthread -lcrypto -ldl -pthread  -lzstd  -lz  
+Libs.private:  -lssh2 -lssh2 -lgpg-error -lssl -ldl -lcrypto -ldl -lz -lssl -lcrypto -lssl -ldl -pthread -lcrypto -ldl -pthread -lzstd -lz
+Cflags: -I${includedir} -DCURL_STATICLIB
+Cflags.private: -DCURL_STATICLIB

libcurl/share/aclocal/libcurl.m4

@@ -0,0 +1,274 @@
+#***************************************************************************
+#                                  _   _ ____  _
+#  Project                     ___| | | |  _ \| |
+#                             / __| | | | |_) | |
+#                            | (__| |_| |  _ <| |___
+#                             \___|\___/|_| \_\_____|
+#
+# Copyright (C) David Shaw <dshaw@jabberwocky.com>
+#
+# This software is licensed as described in the file COPYING, which
+# you should have received as part of this distribution. The terms
+# are also available at https://curl.se/docs/copyright.html.
+#
+# You may opt to use, copy, modify, merge, publish, distribute and/or sell
+# copies of the Software, and permit persons to whom the Software is
+# furnished to do so, under the terms of the COPYING file.
+#
+# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+# KIND, either express or implied.
+#
+# SPDX-License-Identifier: curl
+#
+###########################################################################
+# LIBCURL_CHECK_CONFIG ([DEFAULT-ACTION], [MINIMUM-VERSION],
+#                       [ACTION-IF-YES], [ACTION-IF-NO])
+# ----------------------------------------------------------
+#      David Shaw <dshaw@jabberwocky.com>   May-09-2006
+#
+# Checks for libcurl.  DEFAULT-ACTION is the string yes or no to
+# specify whether to default to --with-libcurl or --without-libcurl.
+# If not supplied, DEFAULT-ACTION is yes.  MINIMUM-VERSION is the
+# minimum version of libcurl to accept.  Pass the version as a regular
+# version number like 7.10.1. If not supplied, any version is
+# accepted.  ACTION-IF-YES is a list of shell commands to run if
+# libcurl was successfully found and passed the various tests.
+# ACTION-IF-NO is a list of shell commands that are run otherwise.
+# Note that using --without-libcurl does run ACTION-IF-NO.
+#
+# This macro #defines HAVE_LIBCURL if a working libcurl setup is
+# found, and sets @LIBCURL@ and @LIBCURL_CPPFLAGS@ to the necessary
+# values.  Other useful defines are LIBCURL_FEATURE_xxx where xxx are
+# the various features supported by libcurl, and LIBCURL_PROTOCOL_yyy
+# where yyy are the various protocols supported by libcurl.  Both xxx
+# and yyy are capitalized.  See the list of AH_TEMPLATEs at the top of
+# the macro for the complete list of possible defines.  Shell
+# variables $libcurl_feature_xxx and $libcurl_protocol_yyy are also
+# defined to 'yes' for those features and protocols that were found.
+# Note that xxx and yyy keep the same capitalization as in the
+# curl-config list (e.g. it's "HTTP" and not "http").
+#
+# Users may override the detected values by doing something like:
+# LIBCURL="-lcurl" LIBCURL_CPPFLAGS="-I/usr/myinclude" ./configure
+#
+# For the sake of sanity, this macro assumes that any libcurl that is found is
+# after version 7.7.2, the first version that included the curl-config script.
+# Note that it is important for people packaging binary versions of libcurl to
+# include this script!  Without curl-config, we can only guess what protocols
+# are available, or use curl_version_info to figure it out at runtime.
+
+AC_DEFUN([LIBCURL_CHECK_CONFIG],
+[
+  AH_TEMPLATE([LIBCURL_FEATURE_SSL],[Defined if libcurl supports SSL])
+  AH_TEMPLATE([LIBCURL_FEATURE_KRB4],[Defined if libcurl supports KRB4])
+  AH_TEMPLATE([LIBCURL_FEATURE_IPV6],[Defined if libcurl supports IPv6])
+  AH_TEMPLATE([LIBCURL_FEATURE_LIBZ],[Defined if libcurl supports libz])
+  AH_TEMPLATE([LIBCURL_FEATURE_ASYNCHDNS],[Defined if libcurl supports AsynchDNS])
+  AH_TEMPLATE([LIBCURL_FEATURE_IDN],[Defined if libcurl supports IDN])
+  AH_TEMPLATE([LIBCURL_FEATURE_SSPI],[Defined if libcurl supports SSPI])
+  AH_TEMPLATE([LIBCURL_FEATURE_NTLM],[Defined if libcurl supports NTLM])
+
+  AH_TEMPLATE([LIBCURL_PROTOCOL_HTTP],[Defined if libcurl supports HTTP])
+  AH_TEMPLATE([LIBCURL_PROTOCOL_HTTPS],[Defined if libcurl supports HTTPS])
+  AH_TEMPLATE([LIBCURL_PROTOCOL_FTP],[Defined if libcurl supports FTP])
+  AH_TEMPLATE([LIBCURL_PROTOCOL_FTPS],[Defined if libcurl supports FTPS])
+  AH_TEMPLATE([LIBCURL_PROTOCOL_FILE],[Defined if libcurl supports FILE])
+  AH_TEMPLATE([LIBCURL_PROTOCOL_TELNET],[Defined if libcurl supports TELNET])
+  AH_TEMPLATE([LIBCURL_PROTOCOL_LDAP],[Defined if libcurl supports LDAP])
+  AH_TEMPLATE([LIBCURL_PROTOCOL_DICT],[Defined if libcurl supports DICT])
+  AH_TEMPLATE([LIBCURL_PROTOCOL_TFTP],[Defined if libcurl supports TFTP])
+  AH_TEMPLATE([LIBCURL_PROTOCOL_RTSP],[Defined if libcurl supports RTSP])
+  AH_TEMPLATE([LIBCURL_PROTOCOL_POP3],[Defined if libcurl supports POP3])
+  AH_TEMPLATE([LIBCURL_PROTOCOL_IMAP],[Defined if libcurl supports IMAP])
+  AH_TEMPLATE([LIBCURL_PROTOCOL_SMTP],[Defined if libcurl supports SMTP])
+
+  AC_ARG_WITH(libcurl,
+     AS_HELP_STRING([--with-libcurl=PREFIX],[look for the curl library in PREFIX/lib and headers in PREFIX/include]),
+     [_libcurl_with=$withval],[_libcurl_with=ifelse([$1],,[yes],[$1])])
+
+  if test "$_libcurl_with" != "no" ; then
+
+     AC_PROG_AWK
+
+     _libcurl_version_parse="eval $AWK '{split(\$NF,A,\".\"); X=256*256*A[[1]]+256*A[[2]]+A[[3]]; print X;}'"
+
+     _libcurl_try_link=yes
+
+     if test -d "$_libcurl_with" ; then
+        LIBCURL_CPPFLAGS="-I$withval/include"
+        _libcurl_ldflags="-L$withval/lib"
+        AC_PATH_PROG([_libcurl_config],[curl-config],[],
+                     ["$withval/bin"])
+     else
+        AC_PATH_PROG([_libcurl_config],[curl-config],[],[$PATH])
+     fi
+
+     if test x$_libcurl_config != "x" ; then
+        AC_CACHE_CHECK([for the version of libcurl],
+           [libcurl_cv_lib_curl_version],
+           [libcurl_cv_lib_curl_version=`$_libcurl_config --version | $AWK '{print $[]2}'`])
+
+        _libcurl_version=`echo $libcurl_cv_lib_curl_version | $_libcurl_version_parse`
+        _libcurl_wanted=`echo ifelse([$2],,[0],[$2]) | $_libcurl_version_parse`
+
+        if test $_libcurl_wanted -gt 0 ; then
+           AC_CACHE_CHECK([for libcurl >= version $2],
+              [libcurl_cv_lib_version_ok],
+              [
+              if test $_libcurl_version -ge $_libcurl_wanted ; then
+                 libcurl_cv_lib_version_ok=yes
+              else
+                 libcurl_cv_lib_version_ok=no
+              fi
+              ])
+        fi
+
+        if test $_libcurl_wanted -eq 0 || test x$libcurl_cv_lib_version_ok = xyes ; then
+           if test x"$LIBCURL_CPPFLAGS" = "x" ; then
+              LIBCURL_CPPFLAGS=`$_libcurl_config --cflags`
+           fi
+           if test x"$LIBCURL" = "x" ; then
+              LIBCURL=`$_libcurl_config --libs`
+
+              # This is so silly, but Apple actually has a bug in their
+              # curl-config script.  Fixed in Tiger, but there are still
+              # lots of Panther installs around.
+              case "${host}" in
+                 powerpc-apple-darwin7*)
+                    LIBCURL=`echo $LIBCURL | sed -e 's|-arch i386||g'`
+                 ;;
+              esac
+           fi
+
+           # All curl-config scripts support --feature
+           _libcurl_features=`$_libcurl_config --feature`
+
+           # Is it modern enough to have --protocols? (7.12.4)
+           if test $_libcurl_version -ge 461828 ; then
+              _libcurl_protocols=`$_libcurl_config --protocols`
+           fi
+        else
+           _libcurl_try_link=no
+        fi
+
+        unset _libcurl_wanted
+     fi
+
+     if test $_libcurl_try_link = yes ; then
+
+        # we did not find curl-config, so let's see if the user-supplied
+        # link line (or failing that, "-lcurl") is enough.
+        LIBCURL=${LIBCURL-"$_libcurl_ldflags -lcurl"}
+
+        AC_CACHE_CHECK([whether libcurl is usable],
+           [libcurl_cv_lib_curl_usable],
+           [
+           _libcurl_save_cppflags=$CPPFLAGS
+           CPPFLAGS="$LIBCURL_CPPFLAGS $CPPFLAGS"
+           _libcurl_save_libs=$LIBS
+           LIBS="$LIBCURL $LIBS"
+
+           AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <curl/curl.h>]],[[
+/* Try to use a few common options to force a failure if we are
+   missing symbols or cannot link. */
+int x;
+curl_easy_setopt(NULL,CURLOPT_URL,NULL);
+x=CURL_ERROR_SIZE;
+x=CURLOPT_WRITEFUNCTION;
+x=CURLOPT_WRITEDATA;
+x=CURLOPT_ERRORBUFFER;
+x=CURLOPT_STDERR;
+x=CURLOPT_VERBOSE;
+if (x) {;}
+]])],libcurl_cv_lib_curl_usable=yes,libcurl_cv_lib_curl_usable=no)
+
+           CPPFLAGS=$_libcurl_save_cppflags
+           LIBS=$_libcurl_save_libs
+           unset _libcurl_save_cppflags
+           unset _libcurl_save_libs
+           ])
+
+        if test $libcurl_cv_lib_curl_usable = yes ; then
+
+           # Does curl_free() exist in this version of libcurl?
+           # If not, fake it with free()
+
+           _libcurl_save_cppflags=$CPPFLAGS
+           CPPFLAGS="$CPPFLAGS $LIBCURL_CPPFLAGS"
+           _libcurl_save_libs=$LIBS
+           LIBS="$LIBS $LIBCURL"
+
+           AC_CHECK_DECL([curl_free],[],
+              [AC_DEFINE([curl_free],[free],
+                [Define curl_free() as free() if our version of curl lacks curl_free.])],
+              [[#include <curl/curl.h>]])
+
+           CPPFLAGS=$_libcurl_save_cppflags
+           LIBS=$_libcurl_save_libs
+           unset _libcurl_save_cppflags
+           unset _libcurl_save_libs
+
+           AC_DEFINE(HAVE_LIBCURL,1,
+             [Define to 1 if you have a functional curl library.])
+           AC_SUBST(LIBCURL_CPPFLAGS)
+           AC_SUBST(LIBCURL)
+
+           for _libcurl_feature in $_libcurl_features ; do
+              AC_DEFINE_UNQUOTED(AS_TR_CPP(libcurl_feature_$_libcurl_feature),[1])
+              eval AS_TR_SH(libcurl_feature_$_libcurl_feature)=yes
+           done
+
+           if test "x$_libcurl_protocols" = "x" ; then
+
+              # We do not have --protocols, so just assume that all
+              # protocols are available
+              _libcurl_protocols="HTTP FTP FILE TELNET LDAP DICT TFTP"
+
+              if test x$libcurl_feature_SSL = xyes ; then
+                 _libcurl_protocols="$_libcurl_protocols HTTPS"
+
+                 # FTPS was not standards-compliant until version
+                 # 7.11.0 (0x070b00 == 461568)
+                 if test $_libcurl_version -ge 461568; then
+                    _libcurl_protocols="$_libcurl_protocols FTPS"
+                 fi
+              fi
+
+              # RTSP, IMAP, POP3 and SMTP were added in
+              # 7.20.0 (0x071400 == 463872)
+              if test $_libcurl_version -ge 463872; then
+                 _libcurl_protocols="$_libcurl_protocols RTSP IMAP POP3 SMTP"
+              fi
+           fi
+
+           for _libcurl_protocol in $_libcurl_protocols ; do
+              AC_DEFINE_UNQUOTED(AS_TR_CPP(libcurl_protocol_$_libcurl_protocol),[1])
+              eval AS_TR_SH(libcurl_protocol_$_libcurl_protocol)=yes
+           done
+        else
+           unset LIBCURL
+           unset LIBCURL_CPPFLAGS
+        fi
+     fi
+
+     unset _libcurl_try_link
+     unset _libcurl_version_parse
+     unset _libcurl_config
+     unset _libcurl_feature
+     unset _libcurl_features
+     unset _libcurl_protocol
+     unset _libcurl_protocols
+     unset _libcurl_version
+     unset _libcurl_ldflags
+  fi
+
+  if test x$_libcurl_with = xno || test x$libcurl_cv_lib_curl_usable != xyes ; then
+     # This is the IF-NO path
+     ifelse([$4],,:,[$4])
+  else
+     # This is the IF-YES path
+     ifelse([$3],,:,[$3])
+  fi
+
+  unset _libcurl_with
+])