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Makefile

@@ -8,7 +8,7 @@ ifeq ($(ANDROID_DATA),/data)
 endif
 
 
-all : main.o http.o dns.o
+all : main.o http.o dns.o timeout.o
 	$(CC) $(CFLAGS) $(DEFS) -o $(OBJ) $^
 	strip $(OBJ)
 	-chmod 777 $(OBJ) 2>&-

dns.h

@@ -3,6 +3,8 @@
 
 #include "main.h"
 
+#define DEFAULT_DNS_IP "114.114.114.114"
+
 struct dns {
     char request[512];  //UDP的DNS请求不超512字节
     uint16_t request_len, sent_len;

http.c

@@ -1,21 +1,15 @@
 #include "http.h"
 #include "dns.h"
+#include "timeout.h"
 
+#define SSL_RSP "HTTP/1.1 200 Connection established\r\n\r\n"
 #define HTTP_TYPE 0
 #define OTHER_TYPE 1
 
 conn_t cts[MAX_CONNECTION];
-static char ssl_rsp[] = "HTTP/1.1 200 Connection established\r\n\r\n";
 char *local_header, *proxy_header, *ssl_proxy;
 int lisFd, proxy_header_len, local_header_len;
-uint8_t strict_spilce, encodeCode;
+uint8_t strict_spilce;
-
-/* 对数据进行编码 */
-static void dataEncode(char *data, int data_len)
-{
-    while (data_len-- > 0)
-        data[data_len] ^= encodeCode;
-}
 
 int8_t connectionToServer(char *ip, conn_t *server)
 {
@@ -146,20 +140,11 @@ static char *get_host(char *data)
     while (*host == ' ')
         host++;
     hostEnd = strchr(host, '\r');
-    
     if (hostEnd)
-    {
-        if (encodeCode)
-            dataEncode(host, hostEnd - host);
         return strndup(host, hostEnd - host);
-    }
     else
-    {
-        if (encodeCode)
-            dataEncode(host, strlen(host));
         return strdup(host);
 }
-}
 
 /* 删除请求头中的头域 */
 static void del_hdr(char *header, int *header_len)
@@ -192,24 +177,6 @@ static void del_hdr(char *header, int *header_len)
     }
 }
 
-/* 对请求头中的Referer头域进行编码 */
-static void encodeReferer(char *request)
-{
-    char *referer_key, *referer_value, *line, *pr;
-    
-    for (line = strchr(request, '\n'); (referer_key = strstr(line, "\nReferer:")) != NULL || (referer_key = strstr(line, "\nreferer:")) != NULL; line = pr + 1)
-    {
-        referer_value = referer_key + sizeof("\nReferer:") - 1;
-        while (*referer_value == ' ')
-            referer_value++;
-        pr = strchr(referer_value, '\r');
-        if (pr)
-            dataEncode(referer_value, pr - referer_value);
-        else
-            dataEncode(referer_value, strlen(referer_value));
-    }
-}
-
 /* 构建新请求头 */
 static char *build_request(char *client_data, int *data_len, char *host)
 {
@@ -225,7 +192,6 @@ static char *build_request(char *client_data, int *data_len, char *host)
         lf = strchr(header, '\n');
         if (url == NULL || lf == NULL || lf - 10 <= header)
             return client_data;
-
         if (url < lf && *(++url) != '/')
         {
             uri = strchr(url + 7, '/');
@@ -243,12 +209,6 @@ static char *build_request(char *client_data, int *data_len, char *host)
                 *data_len -= p - url;
                 lf -= p - url;
             }
-            if (encodeCode)
-                dataEncode(url + 1, lf - 10 - (url + 1));
-        }
-        else if (url < lf && encodeCode)
-        {
-            dataEncode(url + 1, lf - 10 - (url + 1));
         }
 
         *data_len += strlen(proxy_host) + 8;  //8为 "Host: " + "\r\n"的长度
@@ -273,8 +233,6 @@ static char *build_request(char *client_data, int *data_len, char *host)
         free(client_data);
         if (proxy_host != host)
             free(proxy_host);
-        if (encodeCode)
-            encodeReferer(new_data);
         if (strict_spilce == 0)
             return new_data;
         client_data = new_data;
@@ -352,8 +310,6 @@ static void serverToClient(conn_t *server)
     client = server - 1;
     while ((server->ready_data_len = read(server->fd, server->ready_data, BUFFER_SIZE)) > 0)
     {
-        if (encodeCode)  //对服务端的数据编码
-            dataEncode(server->ready_data, server->ready_data_len);
         write_len = write(client->fd, server->ready_data, server->ready_data_len);
         if (write_len == -1)
         {
@@ -392,6 +348,7 @@ void tcp_out(conn_t *to)
         from = to - 1;
     else
         from = to + 1;
+    from->last_event_time = to->last_event_time = time(NULL);
     write_len = write(to->fd, from->ready_data + from->sent_len, from->ready_data_len - from->sent_len);
     if (write_len == from->ready_data_len - from->sent_len)
     {
@@ -439,11 +396,13 @@ void tcp_in(conn_t *in)
     //如果in - cts是奇数，那么是服务端触发事件
     if ((in - cts) & 1)
     {
+        in->last_event_time = (in-1)->last_event_time = time(NULL);
         if (in->ready_data_len == 0)
             serverToClient(in);
         return;
     }
     
+    in->last_event_time = (in+1)->last_event_time = time(NULL);
     in->incomplete_data = read_data(in, in->incomplete_data, &in->incomplete_data_len);
     if (in->incomplete_data == NULL)
     {
@@ -454,8 +413,6 @@ void tcp_in(conn_t *in)
     server->request_type = in->request_type = request_type(in->incomplete_data);
     if (in->request_type == OTHER_TYPE)
     {
-        if (encodeCode)
-            dataEncode(in->incomplete_data, in->incomplete_data_len);
         //如果是第一次读取数据，并且不是HTTP请求的，关闭连接。复制数据失败的也关闭连接
         if (in->reread_data == 0 || copy_data(in) != 0)
         {
@@ -464,13 +421,10 @@ void tcp_in(conn_t *in)
         }
         goto handle_data_complete;
     }
-    headerEnd = strstr(in->incomplete_data, "\n\r\n");
+    headerEnd = strstr(in->incomplete_data, "\n\r");
     //请求头不完整，等待下次读取
     if (headerEnd == NULL)
         return;
-    headerEnd += 3;
-    if (encodeCode)
-        dataEncode(headerEnd, in->incomplete_data_len - (headerEnd - in->incomplete_data));
     host = get_host(in->incomplete_data);
     if (host == NULL)
     {
@@ -491,12 +445,13 @@ void tcp_in(conn_t *in)
         {
             server->is_ssl = in->is_ssl = 1;
             /* 这时候即使fd是非阻塞也只需要判断返回值是否小于0 */
-            if (write(in->fd, ssl_rsp, sizeof(ssl_rsp) - 1) < 0)
+            if (write(in->fd, SSL_RSP, sizeof(SSL_RSP)-1) < 0)
             {
                 free(host);
                 close_connection(in);
                 return;
             }
+            headerEnd += 3;
             if (headerEnd - in->incomplete_data < in->incomplete_data_len)
             {
                 in->incomplete_data_len -= headerEnd - in->incomplete_data;
@@ -507,16 +462,6 @@ void tcp_in(conn_t *in)
                     free(host);
                     return;
                 }
-                else
-                {
-                    //如果是CONNECT代理HTTP,需要重新获取host
-                    char *save_host = host;
-                    host = get_host(in->incomplete_data);
-                    if (!host)
-                        host = save_host;
-                    else
-                        free(save_host);
-                }
             }
             else
             {
@@ -547,8 +492,6 @@ void *accept_loop(void *ptr)
     struct epoll_event epollEvent;
     conn_t *client;
     
-    if (encodeCode)
-        dataEncode(ssl_rsp, sizeof(ssl_rsp) - 1);
     epollEvent.events = EPOLLIN|EPOLLET;
     while (1)
     {

http.h

@@ -6,9 +6,11 @@
 typedef struct tcp_connection {
     char *ready_data, *incomplete_data;
     int fd, ready_data_len, incomplete_data_len, sent_len;
+    unsigned int last_event_time;
     uint16_t destPort;
     unsigned reread_data :1;
     unsigned request_type :1;
+    unsigned keep_alive :1;
 	unsigned is_ssl :1;
 } conn_t;
 
@@ -22,6 +24,6 @@ extern void tcp_out(conn_t *ct);
 extern conn_t cts[MAX_CONNECTION];
 extern char *local_header, *proxy_header, *ssl_proxy;
 extern int lisFd, local_header_len, proxy_header_len;
-extern uint8_t strict_spilce, isEncode, encodeCode;
+extern uint8_t strict_spilce;
 
 #endif

main.c

@@ -1,5 +1,6 @@
 #include "main.h"
 #include "http.h"
+#include "timeout.h"
 #include "dns.h"
 #include <pthread.h>
 
@@ -19,8 +20,8 @@ static void usage()
     "    -L local proxy header                 \033[35G default is 'Local'\n"
     "    -d dns query address                  \033[35G default is " DEFAULT_DNS_IP "\n"
     "    -s ssl proxy string                   \033[35G default is 'CONNECT'\n"
+    "    -t timeout                                  \033[35G default is 35s\n"
     "    -u uid                   \033[35G running uid\n"
-    "    -e                                    \033[35G set encode data code(1-127)\n"
     "    -a                                    \033[35G all http requests repeat spilce\n"
     "    -h display this infomaction\n"
     "    -w worker process\n");
@@ -80,7 +81,7 @@ static void initializate(int argc, char **argv)
     dnsAddr.sin_addr.s_addr = inet_addr(DEFAULT_DNS_IP);
     dnsAddr.sin_port = htons(53);
     dns_connect(&dnsAddr);  //主进程中的fd
-    strict_spilce = encodeCode = 0;
+    strict_spilce = timeout_seconds = 0;
     local_header = NULL;
     ssl_proxy = (char *)"CONNECT";
     local_header = (char *)"\nLocal:";
@@ -88,7 +89,7 @@ static void initializate(int argc, char **argv)
     proxy_header_len = strlen(proxy_header);
     local_header_len = strlen(local_header);
     /* 处理命令行参数 */
-    while ((opt = getopt(argc, argv, "d:l:e:p:s:w:u:L:ah")) != -1)
+    while ((opt = getopt(argc, argv, "d:l:p:s:w:t:u:L:ah")) != -1)
     {
         switch (opt)
         {
@@ -116,10 +117,6 @@ static void initializate(int argc, char **argv)
                 }
             break;
             
-            case 'e':
-                encodeCode = (int8_t)atoi(optarg);
-            break;
-            
             case 'p':
                 //假如选项值为 "Proxy", proxy_header设置为 "\nProxy:"
                 proxy_header_len = strlen(optarg) + 2;
@@ -155,6 +152,10 @@ static void initializate(int argc, char **argv)
                 strict_spilce = 1;
             break;
             
+            case 't':
+                timeout_seconds = (unsigned int)atoi(optarg);
+            break;
+            
             case 'w':
                 workers = atoi(optarg);
             break;
@@ -228,7 +229,7 @@ static void initializate(int argc, char **argv)
 int main(int argc, char **argv)
 {
     initializate(argc, argv);
-    if (daemon(1, 0))
+    if (daemon(1, 1))
     {
         perror("daemon");
         return 1;

main.h

@@ -16,7 +16,7 @@
 #include <sys/types.h>
 #include <signal.h>
 
-#define BUFFER_SIZE 4096
+#define BUFFER_SIZE 10240
 #define MAX_CONNECTION 1020
 
 extern struct epoll_event evs[MAX_CONNECTION + 1], ev;

timeout.c

@@ -0,0 +1,27 @@
+#include "main.h"
+#include "http.h"
+#include "time.h"
+
+unsigned int timeout_seconds;
+
+void *close_timeout_connectionLoop(void *nullPtr)
+{
+    time_t currentTime;
+    int i, recv_return;
+    char c;
+
+    while (1)
+    {
+        sleep(1);
+        currentTime = time(NULL);
+        for (i = 0; i < MAX_CONNECTION; i += 2)
+        {
+            if (cts[i].fd > -1 && cts[i].is_ssl == 0 && cts[i].last_event_time != 0 && currentTime - cts[i].last_event_time >= (time_t)timeout_seconds)
+            {
+                recv_return = recv(cts[i].fd, &c, 1, MSG_PEEK);
+                if (recv_return == 0 && errno != EAGAIN)
+                    close_connection(cts + i);
+            }
+        }
+    }
+}

timeout.h

@@ -0,0 +1,12 @@
+#ifndef TIME_H
+#define TIME_H
+
+#define DEFAULT_TIMEOUT 35
+
+#include <time.h>
+
+extern unsigned int timeout_seconds;
+
+void *close_timeout_connectionLoop(void *nullPtr);
+
+#endif