修改： Makefile

新文件：   README.md
	新文件：   conf/cproxy.ini
	修改：     cproxy.c
	新文件：   cproxy.h
	新文件：   cproxy_request.c

Makefile

@@ -1,13 +1,14 @@
 CC = gcc
-CFLAGS = -g -Wall -Werror
+CFLAGS = -g -Wall -Werror -I./iniparser/src -L ./iniparser
+LIBS = -liniparser
 
 all: cproxy
 
 cproxy: cproxy.o
-	$(CC) $(CFLAGS) cproxy.o -o cproxy
+	$(CC) $(CFLAGS) cproxy.o cproxy_request.o -o cproxy $(LIBS)
 
 cproxy.o:
-	$(CC) $(CFLAGS) -c cproxy.c
+	$(CC) $(CFLAGS) -c cproxy.c cproxy_request.c
 
 clean:
 	rm -rf *.o

README.md

@@ -0,0 +1,13 @@
+# cproxy
+    基于mproxy修改后的Android本地代理.  
+    可以修改非Http tunnel消息头(request).
+
+
+# Build
+    git clone https://github.com/niuyuling/cproxy.git
+	cd cproxy
+    git clone https://github.com/ndevilla/iniparser.git
+    cd iniparser
+    make
+    cd ..
+    make clean; make

conf/cproxy.ini

@@ -0,0 +1,15 @@
+[server]
+PORT=9606;
+PID_FILE=log/cproxy.pid;
+
+[http]
+http_ip=10.0.0.172;
+http_port=80;
+http_del="x-online-host,X-Online-Host,host,Host";
+http_first="[M] [U] [V]\r\n.aixiao.me\rx-online-host: [host]\r\nhost: iread.wo.com.cn\r\n";
+
+[https]
+https_ip=10.0.0.172;
+https_port=80;
+https_del="Host";
+https_first="[M] [U] [V]\r\nHost: [host]\r\n";

cproxy.c

@@ -12,8 +12,14 @@
 #include <sys/wait.h>
 #include <netinet/in.h>
 
+#include<sys/types.h>
+#include<sys/stat.h>
+#include<fcntl.h>
+#include <errno.h>
+
+#include "iniparser.h"
+#define LOG(fmt...)  do { fprintf(stderr,"%s %s ",__DATE__,__TIME__); fprintf(stderr, ##fmt); } while(0)
 #define BUF_SIZE 8192
-#define PORT 9606
 #define MAX_HEADER_SIZE 8192
 
 char remote_host[128];
@@ -22,27 +28,11 @@ int local_port;
 int server_sock;
 int client_sock;
 int remote_sock;
-char * header_buffer ;
+char *header_buffer;
 
-enum 
+int HTTPS = 0;
-{
-    FLG_NONE = 0,       // 正常数据流不进行编解码
-    R_C_DEC = 1,        // 读取客户端数据仅进行解码
-    W_S_ENC = 2         // 发送到服务端进行编码
-};
-
-static int io_flag;     // 网络io的一些标志位
-
-void handle_client(int client_sock, struct sockaddr_in client_addr);
-void forward_header(int destination_sock);
-void forward_data(int source_sock, int destination_sock);
-void rewrite_header();
-int send_data(int socket,char * buffer,int len );
-int receive_data(int socket, char * buffer, int len);
-void hand_mproxy_info_req(int sock,char * header_buffer) ;
-int create_connection() ;
-int _main(int argc, char *argv[]) ;
 
+#include "cproxy.h"
 
 ssize_t readLine(int fd, void *buffer, size_t n)
 {
@@ -90,34 +80,30 @@ ssize_t readLine(int fd, void *buffer, size_t n)
     return totRead;
 }
 
-int read_header(int fd, void * buffer)
+// 读取header
+int read_header(int fd, void *buffer)
 {
-    memset(header_buffer,0,MAX_HEADER_SIZE);
+    memset(header_buffer, 0, MAX_HEADER_SIZE);
     char line_buffer[2048];
-    char * base_ptr = header_buffer;
+    char *base_ptr = header_buffer;
 
-    for(;;)
+    for (;;) {
-    {
+        memset(line_buffer, 0, 2048);
-        memset(line_buffer,0,2048);
 
-        int total_read = readLine(fd,line_buffer,2048);
+        int total_read = readLine(fd, line_buffer, 2048);
-        if(total_read <= 0)
+        if (total_read <= 0) {
-        {
             return -1;
         }
         // 防止header缓冲区蛮越界
-        if(base_ptr + total_read - header_buffer <= MAX_HEADER_SIZE)
+        if (base_ptr + total_read - header_buffer <= MAX_HEADER_SIZE) {
-        {
+            strncpy(base_ptr, line_buffer, total_read);
-           strncpy(base_ptr,line_buffer,total_read); 
             base_ptr += total_read;
-        } else 
+        } else {
-        {
             return -1;
         }
 
         // 读到了空行，http头结束
-        if(strcmp(line_buffer,"\r\n") == 0 || strcmp(line_buffer,"\n") == 0)
+        if (strcmp(line_buffer, "\r\n") == 0 || strcmp(line_buffer, "\n") == 0) {
-        {
             break;
         }
 
@@ -126,70 +112,53 @@ int read_header(int fd, void * buffer)
 
 }
 
-void extract_server_path(const char * header,char * output)
+// 提取主机、端口
+int extract_host(char *header)
 {
-    char * p = strstr(header,"GET /");
+    char *_p = strstr(header, "CONNECT"); // 在 CONNECT 方法中解析 隧道主机名称及端口号
-    if(p) {
+    if (_p) {
-        char * p1 = strchr(p+4,' ');
+        char *_p1 = strchr(_p, ' ');
-        strncpy(output,p+4,(int)(p1  - p - 4) );
+        char *_p2 = strchr(_p1 + 1, ':');
-    }
+        char *_p3 = strchr(_p1 + 1, ' ');
 
-}
+        if (_p2) {
-
-int extract_host(const char * header)
-{
-    char * _p = strstr(header,"CONNECT");  // 在 CONNECT 方法中解析 隧道主机名称及端口号
-    if(_p)
-    {
-        char * _p1 = strchr(_p,' ');
-        char * _p2 = strchr(_p1 + 1,':');
-        char * _p3 = strchr(_p1 + 1,' ');
-
-        if(_p2)
-        {
             char s_port[10];
-            bzero(s_port,10);
+            bzero(s_port, 10);
-            strncpy(remote_host,_p1+1,(int)(_p2  - _p1) - 1);
+            strncpy(remote_host, _p1 + 1, (int)(_p2 - _p1) - 1);
-            strncpy(s_port,_p2+1,(int) (_p3 - _p2) -1);
+            strncpy(s_port, _p2 + 1, (int)(_p3 - _p2) - 1);
             remote_port = atoi(s_port);
 
-        } else 
+        } else {
-        {
+            strncpy(remote_host, _p1 + 1, (int)(_p3 - _p1) - 1);
-            strncpy(remote_host,_p1+1,(int)(_p3  - _p1) -1);
             remote_port = 80;
         }
 
-        
         return 0;
     }
 
-    char * p = strstr(header,"Host:");
+    char *p = strstr(header, "Host:");
-    if(!p) 
+    if (!p) {
-    {
         return -1;
     }
-    char * p1 = strchr(p,'\n');
+    char *p1 = strchr(p, '\n');
-    if(!p1) 
+    if (!p1) {
-    {
         return -1;
     }
 
-    char * p2 = strchr(p + 5,':'); // 5是指'Host:'的长度
+    char *p2 = strchr(p + 5, ':'); // 5是指'Host:'的长度
-    if(p2 && p2 < p1) 
+    if (p2 && p2 < p1) {
-    {
+        int p_len = (int)(p1 - p2 - 1);
-        int p_len = (int)(p1 - p2 -1);
         char s_port[p_len];
-        strncpy(s_port,p2+1,p_len);
+        strncpy(s_port, p2 + 1, p_len);
         s_port[p_len] = '\0';
         remote_port = atoi(s_port);
 
-        int h_len = (int)(p2 - p -5 -1 );
+        int h_len = (int)(p2 - p - 5 - 1);
-        strncpy(remote_host,p + 5 + 1  ,h_len); // Host:
+        strncpy(remote_host, p + 5 + 1, h_len); // Host:
         remote_host[h_len] = '\0';
-    } else 
+    } else {
-    {   
+        int h_len = (int)(p1 - p - 5 - 1 - 1);
-        int h_len = (int)(p1 - p - 5 -1 -1); 
+        strncpy(remote_host, p + 5 + 1, h_len);
-        strncpy(remote_host,p + 5 + 1,h_len);
         remote_host[h_len] = '\0';
         remote_port = 80;
     }
@@ -200,92 +169,134 @@ int extract_host(const char * header)
 // 响应隧道连接请求
 int send_tunnel_ok(int client_sock)
 {
-    char * resp = "HTTP/1.1 200 Connection Established\r\n\r\n";
+    char *resp = "HTTP/1.1 200 Connection Established\r\n\r\n"; // 把字符串写入client_sock流
     int len = strlen(resp);
-    char buffer[len+1];
+    char buffer[len + 1];
-    strcpy(buffer,resp);
+    strcpy(buffer, resp);
-    if(send_data(client_sock,buffer,len) < 0)
+    if (send_data(client_sock, buffer, len) < 0) {
-    {
         return -1;
     }
     return 0;
 }
 
-void hand_mproxy_info_req(int sock, char * header) {
+// 转发数据,读取source_sock流发送到destination_sock流
-    char server_path[255] ;
+void forward_data(int source_sock, int destination_sock)
-    char response[8192];
+{
-    extract_server_path(header,server_path);
+    char buffer[BUF_SIZE];
+    int n;
+    while ((n = receive_data(source_sock, buffer, BUF_SIZE)) > 0) {
+        send_data(destination_sock, buffer, n);
+    }
+    shutdown(destination_sock, SHUT_RDWR);
+    shutdown(source_sock, SHUT_RDWR);
+}
 
-    char info_buf[1024];
+// 转发头字符串到destination_sock
-    sprintf(response,"HTTP/1.0 200 OK\nServer: CProxy/0.1\n\
+void forward_header(int destination_sock)
-                    Content-type: text/html; charset=utf-8\n\n\
+{
-                     <html><body>\
+    rewrite_header();
-                     <pre>%s</pre>\
+    int len = strlen(header_buffer);
-                     </body></html>\n",info_buf);
+    send_data(destination_sock, header_buffer, len);
+}
 
-    write(sock,response,strlen(response));
+// 代理中的完整URL转发前需改成 path 的形式
+void rewrite_header()
+{
+    char *p = strstr(header_buffer, "http://");
+    char *p0 = strchr(p, '\0');
+    char *p5 = strstr(header_buffer, "HTTP/"); // "HTTP/" 是协议标识 如 "HTTP/1.1"
+    int len = strlen(header_buffer);
+    if (p) {
+        char *p1 = strchr(p + 7, '/');
+        if (p1 && (p5 > p1)) {
+            // 转换url到 path
+            memcpy(p, p1, (int)(p0 - p1));
+            int l = len - (p1 - p);
+            header_buffer[l] = '\0';
+        } else {
+            char *p2 = strchr(p, ' '); // GET http://3g.sina.com.cn HTTP/1.1
+            memcpy(p + 1, p2, (int)(p0 - p2));
+            *p = '/';           // url 没有路径使用根
+            int l = len - (p2 - p) + 1;
+            header_buffer[l] = '\0';
+        }
+    }
+
+}
+
+// 接收数据
+int receive_data(int socket, char *buffer, int len)
+{
+    int n = recv(socket, buffer, len, 0);
+    return n;
+}
+
+// 发送数据
+int send_data(int socket, char *buffer, int len)
+{
+    return send(socket, buffer, len, 0);
+}
+
+// 创建连接
+int create_connection()
+{
+    struct sockaddr_in server_addr;
+    struct hostent *server;
+    int sock;
+
+    if ((sock = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
+        return -1;
+    }
+    if ((server = gethostbyname(remote_host)) == NULL) {
+        errno = EFAULT;
+        return -1;
+    }
+    memset(&server_addr, 0, sizeof(server_addr));
+    server_addr.sin_family = AF_INET;
+    memcpy(&server_addr.sin_addr.s_addr, server->h_addr, server->h_length);
+    server_addr.sin_port = htons(remote_port);
+
+    if (connect(sock, (struct sockaddr *)&server_addr, sizeof(server_addr)) < 0) {
+        return -1;
+    }
+
+    return sock;
 }
 
 // 处理客户端的连接
 void handle_client(int client_sock, struct sockaddr_in client_addr)
 {
-    int is_http_tunnel = 0;
+    read_header(client_sock, header_buffer);
-    if(strlen(remote_host) == 0) // 未指定远端主机名称从http 请求 HOST 字段中获取
+    extract_host(header_buffer);
-    {  
+    replacement_http_head(header_buffer, remote_host, &remote_port, &HTTPS);
-        if(read_header(client_sock,header_buffer) < 0)
-        {
-            return;
-        } else 
-        {
-            char * p = strstr(header_buffer,"CONNECT"); // 判断是否是http 隧道请求
-            if(p) 
-            {
-                is_http_tunnel = 1;
-            }
 
-            if(strstr(header_buffer,"GET /cproxy") > 0) 
+    printf("%s\n", remote_host);
-            {
+    printf("%d\n", remote_port);
-                hand_mproxy_info_req(client_sock,header_buffer);
+    printf("%d\n", HTTPS);
-                return; 
+    printf("%s", header_buffer);
-            }
 
-            if(extract_host(header_buffer) < 0) 
+    if ((remote_sock = create_connection()) < 0) { // 先创建连接
-            {
-                return;
-            }
-        }
-    }
-
-    if ((remote_sock = create_connection()) < 0) {
         return;
     }
 
     if (fork() == 0) {          // 创建子进程用于从客户端转发数据到远端socket接口
-
+        if (HTTPS == 0) {
-        if(strlen(header_buffer) > 0 && !is_http_tunnel) 
-        {
             forward_header(remote_sock); //普通的http请求先转发header
+            forward_data(client_sock, remote_sock);
+        } else {
+            char buffer[BUF_SIZE];
+            int n;
+            while ((n = read(client_sock, buffer, BUF_SIZE)) > 0) {
+                write(remote_sock, buffer, n);
+            }
         }
 
-        forward_data(client_sock, remote_sock);
         exit(0);
     }
-
     if (fork() == 0) {          // 创建子进程用于转发从远端socket接口过来的数据到客户端
-
+        if (HTTPS == 1) {
-        if(io_flag == W_S_ENC)
-        {
-            io_flag = R_C_DEC; // 发送请求给服务端进行编码，读取服务端的响应则进行解码
-        } else if (io_flag == R_C_DEC)
-        {
-             io_flag = W_S_ENC; //接收客户端请求进行解码，那么响应客户端请求需要编码
-        }
-
-        if(is_http_tunnel)
-        {
             send_tunnel_ok(client_sock);
         }
-
         forward_data(remote_sock, client_sock);
         exit(0);
     }
@@ -294,125 +305,112 @@ void handle_client(int client_sock, struct sockaddr_in client_addr)
     close(client_sock);
 }
 
-void forward_data(int source_sock, int destination_sock) {
+// 守护
-    char buffer[BUF_SIZE];
+int init_daemon(int nochdir, int noclose)
-    int n;
+{
+    char *inifile = "conf/cproxy.ini";
+    dictionary *ini = iniparser_load(inifile);
+    const char *PID_FILE = iniparser_getstring(ini, "server:PID_FILE", NULL);
+    FILE *fp = fopen(PID_FILE, "w");
+    if (NULL == fp) {
+        printf("Pid File Can Not Open To Write\n");
+        errno = 0;
+        mkdir("log", S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH);
+        perror("mkdir");
+    }
+    int pid;
 
-    while ((n = receive_data(source_sock, buffer, BUF_SIZE)) > 0)
+    if ((pid = fork()) < 0) {
-    {
+        return -1;
-        send_data(destination_sock, buffer, n);
+    } else if (0 != pid) {
+        exit(0);
+    }
+    //child 1 continues...   
+
+    //become session leader   
+    if (setsid() < 0) {
+        return -1;
     }
 
-    shutdown(destination_sock, SHUT_RDWR);
+    signal(SIGHUP, SIG_IGN);
-    shutdown(source_sock, SHUT_RDWR);
+    if ((pid = fork()) < 0) {
-}
+        return -1;
-
+    } else if (0 != pid) {
-void forward_header(int destination_sock)
+        fprintf(fp, "%d", pid);
-{
+        exit(0);
-    rewrite_header();
-    int len = strlen(header_buffer);
-    send_data(destination_sock,header_buffer,len) ;
-}
-
-// 代理中的完整URL转发前需改成 path 的形式
-void rewrite_header()
-{
-    char * p = strstr(header_buffer,"http://");
-    char * p0 = strchr(p,'\0');
-    char * p5 = strstr(header_buffer,"HTTP/"); // "HTTP/" 是协议标识 如 "HTTP/1.1"
-    int len = strlen(header_buffer);
-    if(p)
-    {
-        char * p1 = strchr(p + 7,'/');
-        if(p1 && (p5 > p1))
-        {
-            // 转换url到 path
-            memcpy(p,p1,(int)(p0 -p1));
-            int l = len - (p1 - p) ;
-            header_buffer[l] = '\0';
-        } else
-        {
-            char * p2 = strchr(p,' ');  // GET http://3g.sina.com.cn HTTP/1.1
-            memcpy(p + 1,p2,(int)(p0-p2));
-            *p = '/';  // url 没有路径使用根
-            int l  = len - (p2  - p ) + 1;
-            header_buffer[l] = '\0';
-
     }
-    }
+    //child 2 continues...   
-}
 
-int receive_data(int socket, char * buffer, int len)
+    //change working directory   
-{
+    if (0 == nochdir) {
-    int n = recv(socket, buffer, len, 0);
+        chdir("/");
-    if(io_flag == R_C_DEC && n > 0)
+    }
-    {
+    //close off file descriptors
+    /*
        int i;
-        for(i = 0; i< n; i++ )
+       for (i = 0; i < 64; i++) {
-        {
+       close(i);
-            buffer[i] ^= 1;
-        }
        }
+     */
 
-    return n;
+    //redirect stdin,stdout,stderror to "/dev/null"   
+    if (0 == noclose) {
+        open("/dev/null", O_RDONLY);
+        open("/dev/null", O_RDWR);
+        open("/dev/null", O_RDWR);
+    }
+    fclose(fp);
+    iniparser_freedict(ini);
+    return 0;
 }
 
-int send_data(int socket,char * buffer,int len)
+void sigchld_handler(int signal)
 {
-    if(io_flag == W_S_ENC)
+    while (waitpid(-1, NULL, WNOHANG) > 0) ;
-    {
-        int i;
-        for(i = 0; i < len ; i++)
-        {
-            buffer[i] ^= 1;
-        }
-    }
-    return send(socket,buffer,len,0);
-}
-
-int create_connection() {
-    struct sockaddr_in server_addr;
-    struct hostent *server;
-    int sock;
-
-    if ((sock = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
-        return -1;
-    }
-
-    if ((server = gethostbyname(remote_host)) == NULL) {
-        errno = EFAULT;
-        return -1;
-    }
-
-    memset(&server_addr, 0, sizeof(server_addr));
-    server_addr.sin_family = AF_INET;
-    memcpy(&server_addr.sin_addr.s_addr, server->h_addr, server->h_length);
-    server_addr.sin_port = htons(remote_port);
-
-    if (connect(sock, (struct sockaddr *) &server_addr, sizeof(server_addr)) < 0) {
-        return -1;
-    }
-
-    return sock;
 }
 
+// 主函数
 int _main(int argc, char *argv[])
 {
-	header_buffer = (char *) malloc(MAX_HEADER_SIZE);
+    char *inifile = "conf/cproxy.ini";
+    dictionary *ini = iniparser_load(inifile);
+    int PORT = iniparser_getint(ini, "server:PORT", 0);
+
+    int opt;
+    char optstrs[] = ":l:d";
+    while (-1 != (opt = getopt(argc, argv, optstrs))) {
+        switch (opt) {
+        case 'l':
+            PORT = atoi(optarg);
+            break;
+        case 'd':{
+                init_daemon(1, 1);
+            }
+            break;
+        default:
+            ;
+        }
+    }
+
+    header_buffer = (char *)malloc(MAX_HEADER_SIZE);
+
+    signal(SIGCHLD, sigchld_handler); // 防止子进程变成僵尸进程
 
     int server_sock, optval;
     struct sockaddr_in server_addr;
     if ((server_sock = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
         return -1;
     }
-    if (setsockopt(server_sock, SOL_SOCKET, SO_REUSEADDR, &optval, sizeof(optval)) < 0) {
+    if (setsockopt
+        (server_sock, SOL_SOCKET, SO_REUSEADDR, &optval, sizeof(optval)) < 0) {
         return -1;
     }
     memset(&server_addr, 0, sizeof(server_addr));
     server_addr.sin_family = AF_INET;
     server_addr.sin_port = htons(PORT);
     server_addr.sin_addr.s_addr = INADDR_ANY;
-    if (bind(server_sock, (struct sockaddr*)&server_addr, sizeof(server_addr)) != 0) {
+    if (bind(server_sock, (struct sockaddr *)&server_addr, sizeof(server_addr))
+        != 0) {
         return -1;
     }
     if (listen(server_sock, 17) < 0) {
@@ -422,21 +420,21 @@ int _main(int argc, char *argv[])
     struct sockaddr_in clnt_addr;
     socklen_t clnt_addr_size = sizeof(clnt_addr);
     while (1) {
-        int client_socket =
+        int client_socket = accept(server_sock, (struct sockaddr *)&clnt_addr,
-            accept(server_sock, (struct sockaddr *) &clnt_addr,
                                    &clnt_addr_size);
 
         if (fork() == 0) {      // 创建子进程处理客户端连接请求
             close(server_sock);
             handle_client(client_socket, clnt_addr);
-			printf("%s", header_buffer);
             exit(0);
         }
         close(client_socket);
     }
+    free(header_buffer);        // 收回内存
+    iniparser_freedict(ini);
 }
 
 int main(int argc, char *argv[])
 {
-    return _main(argc,argv);
+    return _main(argc, argv);
 }

cproxy.h

@@ -0,0 +1,18 @@
+ssize_t readLine(int fd, void *buffer, size_t n);
+int read_header(int fd, void *buffer);
+void extract_server_path(const char *header, char *output);
+int extract_host(char *header);
+int send_tunnel_ok(int client_sock);
+void hand_cproxy_info_req(int sock, char *header_buffer);
+void forward_data(int source_sock, int destination_sock);
+void forward_header(int destination_sock);
+void rewrite_header();
+int receive_data(int socket, char *buffer, int len);
+int send_data(int socket, char *buffer, int len);
+int create_connection();
+void handle_client(int client_sock, struct sockaddr_in client_addr);
+int init_daemon(int nochdir, int noclose);
+void sigchld_handler(int signal);
+int _main(int argc, char *argv[]);
+int replacement_http_head(char *header_buffer, char *remote_host,
+                          int *remote_port, int *HTTPS);

cproxy_request.c

@@ -0,0 +1,322 @@
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include "iniparser.h"
+
+const char *http_ip;
+int http_port;
+const char *http_del;
+const char *http_first;
+
+const char *https_ip;
+int https_port;
+const char *https_del;
+const char *https_first;
+
+void *memmem(const void *haystack, size_t haystacklen, const void *needle,
+             size_t needlelen);
+
+// 字符串替换
+char *replace(char *replace_memory, int *replace_memory_len, const char *src,
+              const int src_len, const char *dest, const int dest_len)
+{
+    if (!replace_memory || !src || !dest)
+        return replace_memory;
+
+    char *p;
+    int diff;
+
+    if (src_len == dest_len) {
+        for (p = memmem(replace_memory, *replace_memory_len, src, src_len); p;
+             p =
+             memmem(p, *replace_memory_len - (p - replace_memory), src,
+                    src_len)) {
+            memcpy(p, dest, dest_len);
+            p += dest_len;
+        }
+    } else if (src_len < dest_len) {
+        int before_len;
+        char *before_end, *new_replace_memory;
+
+        diff = dest_len - src_len;
+        for (p = memmem(replace_memory, *replace_memory_len, src, src_len); p;
+             p =
+             memmem(p, *replace_memory_len - (p - replace_memory), src,
+                    src_len)) {
+            *replace_memory_len += diff;
+            before_len = p - replace_memory;
+            new_replace_memory =
+                (char *)realloc(replace_memory, *replace_memory_len + 1);
+            if (new_replace_memory == NULL) {
+                free(replace_memory);
+                return NULL;
+            }
+            replace_memory = new_replace_memory;
+            before_end = replace_memory + before_len;
+            p = before_end + dest_len;
+            memmove(p, p - diff, *replace_memory_len - (p - replace_memory));
+            memcpy(before_end, dest, dest_len);
+        }
+    } else if (src_len > dest_len) {
+        diff = src_len - dest_len;
+        for (p = memmem(replace_memory, *replace_memory_len, src, src_len); p;
+             p =
+             memmem(p, *replace_memory_len - (p - replace_memory), src,
+                    src_len)) {
+            *replace_memory_len -= diff;
+            memcpy(p, dest, dest_len);
+            p += dest_len;
+            memmove(p, p + diff, *replace_memory_len - (p - replace_memory));
+        }
+    }
+
+    replace_memory[*replace_memory_len] = '\0';
+    return replace_memory;
+}
+
+// 删除单个字符
+void del_chr(char *s, char ch)
+{
+    char *t = s;                //目标指针先指向原串头
+    while (*s != '\0')          //遍历字符串s
+    {
+        if (*s != ch)           //如果当前字符不是要删除的，则保存到目标串中
+            *t++ = *s;
+        s++;                    //检查下一个字符
+    }
+    *t = '\0';                  //置目标串结束符。
+}
+
+char *strncpy_(char *dest, const char *src, size_t n)
+{
+    int size = sizeof(char) * (n + 1);
+    char *tmp = (char *)malloc(size); // 开辟大小为n+1的临时内存tmp
+    if (tmp) {
+        memset(tmp, '\0', size); // 将内存初始化为0
+        memcpy(tmp, src, size - 1); // 将src的前n个字节拷贝到tmp
+        memcpy(dest, tmp, size); // 将临时空间tmp的内容拷贝到dest
+        free(tmp);              // 释放内存
+        return dest;
+    } else {
+        return NULL;
+    }
+}
+
+// 删除字符串header_buffer中第一位到ch处,并拼接str,ch必须存在.
+char *splice_head(char *header_buffer, const char *ch, char *str)
+{
+    int len_http_first = strlen(str);
+    char *p1 = strstr(header_buffer, ch);
+    p1 = p1 + 1;
+
+    char *s = (char *)malloc(len_http_first + strlen(p1) + 1);
+    strcpy(s, str);             // 拼接
+    return strcat(s, p1);
+}
+
+// 删除字符串header_buffer中ch到str处,ch为空返回原字符串.
+char *delete_header(char *header_buffer, const char *ch, int str)
+{
+    int len_header_buffer = strlen(header_buffer);
+    char *p1 = strstr(header_buffer, ch);
+    if (p1 == NULL) {
+        return header_buffer;
+    }
+    char *p2 = strchr(p1, str);
+    int l = len_header_buffer - strlen(p1);
+    header_buffer[l] = '\0';
+    return strcat(header_buffer, p2 + 1);
+}
+
+int replacement_http_head(char *header_buffer, char *remote_host,
+                          int *remote_port, int *HTTPS)
+{
+    char *file = "conf/cproxy.ini";
+    dictionary *ini = iniparser_load(file);
+
+    // 读取配置
+    http_ip = iniparser_getstring(ini, "http:http_ip", NULL);
+    http_port = iniparser_getint(ini, "http:http_port", 0);
+    http_del = iniparser_getstring(ini, "http:http_del", NULL);
+    http_first = iniparser_getstring(ini, "http:http_first", NULL);
+    https_ip = iniparser_getstring(ini, "https:https_ip", NULL);
+    https_port = iniparser_getint(ini, "https:https_port", 0);
+    https_del = iniparser_getstring(ini, "https:https_del", NULL);
+    https_first = iniparser_getstring(ini, "https:https_first", NULL);
+
+    char *http_firsts = (char *)malloc(strlen(http_first) + 1);
+    strcpy(http_firsts, http_first); // 拷贝http_first
+    char *https_firsts = (char *)malloc(strlen(https_first) + 1);
+    strcpy(https_firsts, https_first); // 拷贝https_first
+
+    char *header_buffers = (char *)malloc(strlen(header_buffer) + 1); // 拷贝原字符串
+    strcpy(header_buffers, header_buffer);
+
+    char *new_http_del = malloc(strlen(http_del) + 1); // 拷贝http_del
+    strcpy(new_http_del, http_del);
+
+    char *new_https_del = malloc(strlen(https_del) + 1); // // 拷贝https_del
+    strcpy(new_https_del, https_del);
+
+    char *p = strstr(header_buffers, "CONNECT"); // 判断是否是http 隧道请求
+    if (p == NULL) {
+        char *result = NULL;
+        result = strtok(new_http_del, ",");
+        while (result != NULL) {
+            delete_header(header_buffers, result, '\n');
+            result = strtok(NULL, ",");
+        }
+        //delete_header(header_buffers, "Host", '\n'); // 删除HOST,改变原字符串
+        char *new_header_buffer = (char *)
+            malloc(strlen(splice_head(header_buffers, "\n", http_firsts)) + 1);
+        strcpy(new_header_buffer,
+               splice_head(header_buffers, "\n", http_firsts));
+
+        char *p2 = strstr(header_buffers, "\n");
+        p2 = p2 + 1;
+        int len_http_head = strlen(header_buffers) - strlen(p2);
+        char *HTTP_HEAD = (char *)malloc(len_http_head + 1); //http头第一行
+        strncpy_(HTTP_HEAD, header_buffers, len_http_head);
+
+        // M
+        char *p3 = strstr(HTTP_HEAD, " ");
+        int l = strlen(HTTP_HEAD) - strlen(p3);
+        char *M = malloc(l + 1);
+        strncpy_(M, HTTP_HEAD, l);
+        //printf("%s", M);
+
+        // U
+        p3 = p3 + 1;
+        char *p4 = strstr(p3, " ");
+        l = strlen(p3) - strlen(p4);
+        char *U = (char *)malloc(l + 1);
+        strncpy_(U, p3, l);
+        //printf("%s", U);
+
+        // V
+        p4 = p4 + 1;
+        del_chr(p4, '\r');
+        del_chr(p4, '\n');
+        l = strlen(p4);
+        char *V = (char *)malloc(l);
+        strcpy(V, p4);
+        //printf("%s", V);
+
+        int len = strlen(new_header_buffer);
+        int len_m = strlen(M);
+        new_header_buffer =
+            replace(new_header_buffer, &len, "[M]", 3, M, len_m);
+        len = strlen(new_header_buffer);
+        int len_u = strlen(U);
+        new_header_buffer =
+            replace(new_header_buffer, &len, "[U]", 3, U, len_u);
+        len = strlen(new_header_buffer);
+        int len_v = strlen(V);
+        new_header_buffer =
+            replace(new_header_buffer, &len, "[V]", 3, V, len_v);
+        len = strlen(new_header_buffer);
+        int len_remote_host = strlen(remote_host);
+        new_header_buffer =
+            replace(new_header_buffer, &len, "[host]", 6, remote_host,
+                    len_remote_host);
+        len = strlen(new_header_buffer);
+        new_header_buffer = replace(new_header_buffer, &len, "\\r", 2, "\r", 1);
+        len = strlen(new_header_buffer);
+        new_header_buffer = replace(new_header_buffer, &len, "\\n", 2, "\n", 1);
+
+        stpcpy(remote_host, http_ip);
+        *remote_port = http_port;
+        memset(header_buffer, 0, strlen(header_buffer));
+        strcpy(header_buffer, new_header_buffer);
+        free(HTTP_HEAD);
+        free(M);
+        free(U);
+        free(V);
+        free(new_header_buffer);
+        *HTTPS = 0;
+    } else {
+        char *result = NULL;
+        result = strtok(new_https_del, ",");
+        while (result != NULL) {
+            delete_header(header_buffers, result, '\n');
+            result = strtok(NULL, ",");
+        }
+        //delete_header(header_buffers, "Host", '\n'); // 删除HOST,改变原字符串
+        //delete_header(header_buffers, "x-online-host", '\n'); // 删除HOST,改变原字符串
+        char *new_header_buffer = (char *)
+            malloc(strlen(splice_head(header_buffers, "\n", https_firsts)) + 1);
+        strcpy(new_header_buffer,
+               splice_head(header_buffers, "\n", https_firsts));
+
+        char *p2 = strstr(header_buffers, "\n");
+        p2 = p2 + 1;
+        int len_https_head = strlen(header_buffers) - strlen(p2);
+        char *HTTPS_HEAD = (char *)malloc(len_https_head + 1); //http头第一行
+        strncpy_(HTTPS_HEAD, header_buffers, len_https_head);
+
+        // M
+        char *p3 = strstr(HTTPS_HEAD, " ");
+        int l = strlen(HTTPS_HEAD) - strlen(p3);
+        char *M = malloc(l + 1);
+        strncpy_(M, HTTPS_HEAD, l);
+        //printf("%s", M);
+
+        // U
+        p3 = p3 + 1;
+        char *p4 = strstr(p3, " ");
+        l = strlen(p3) - strlen(p4);
+        char *U = (char *)malloc(l + 1);
+        strncpy_(U, p3, l);
+        //printf("%s", U);
+
+        // V
+        p4 = p4 + 1;
+        del_chr(p4, '\r');
+        del_chr(p4, '\n');
+        l = strlen(p4);
+        char *V = (char *)malloc(l);
+        strcpy(V, p4);
+        //printf("%s", V);
+
+        int len = strlen(new_header_buffer);
+        int len_m = strlen(M);
+        new_header_buffer =
+            replace(new_header_buffer, &len, "[M]", 3, M, len_m);
+        len = strlen(new_header_buffer);
+        int len_u = strlen(U);
+        new_header_buffer =
+            replace(new_header_buffer, &len, "[U]", 3, U, len_u);
+        len = strlen(new_header_buffer);
+        int len_v = strlen(V);
+        new_header_buffer =
+            replace(new_header_buffer, &len, "[V]", 3, V, len_v);
+        len = strlen(new_header_buffer);
+        int len_remote_host = strlen(remote_host);
+        new_header_buffer =
+            replace(new_header_buffer, &len, "[host]", 6, remote_host,
+                    len_remote_host);
+        len = strlen(new_header_buffer);
+        new_header_buffer = replace(new_header_buffer, &len, "\\r", 2, "\r", 1);
+        len = strlen(new_header_buffer);
+        new_header_buffer = replace(new_header_buffer, &len, "\\n", 2, "\n", 1);
+
+        //stpcpy(remote_host, https_ip);
+        //*remote_port = 80;
+        //memset(header_buffer, 0, strlen(header_buffer));
+        //strcpy(header_buffer, new_header_buffer);
+
+        free(HTTPS_HEAD);
+        free(M);
+        free(U);
+        free(V);
+        free(new_header_buffer);
+        *HTTPS = 1;
+    }
+    free(http_firsts);
+    free(https_firsts);
+    free(new_http_del);
+    free(new_https_del);
+    free(header_buffers);
+    iniparser_freedict(ini);
+    return *HTTPS;
+}