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
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7
Makefile
7
Makefile
@ -1,13 +1,14 @@
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CC = gcc
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CFLAGS = -g -Wall -Werror
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CFLAGS = -g -Wall -Werror -I./iniparser/src -L ./iniparser
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LIBS = -liniparser
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all: cproxy
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cproxy: cproxy.o
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$(CC) $(CFLAGS) cproxy.o -o cproxy
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$(CC) $(CFLAGS) cproxy.o cproxy_request.o -o cproxy $(LIBS)
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cproxy.o:
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$(CC) $(CFLAGS) -c cproxy.c
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$(CC) $(CFLAGS) -c cproxy.c cproxy_request.c
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clean:
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rm -rf *.o
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13
README.md
Normal file
13
README.md
Normal file
@ -0,0 +1,13 @@
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# cproxy
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基于mproxy修改后的Android本地代理.
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可以修改非Http tunnel消息头(request).
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# Build
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git clone https://github.com/niuyuling/cproxy.git
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cd cproxy
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git clone https://github.com/ndevilla/iniparser.git
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cd iniparser
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make
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cd ..
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make clean; make
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15
conf/cproxy.ini
Normal file
15
conf/cproxy.ini
Normal file
@ -0,0 +1,15 @@
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[server]
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PORT=9606;
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PID_FILE=log/cproxy.pid;
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[http]
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http_ip=10.0.0.172;
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http_port=80;
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http_del="x-online-host,X-Online-Host,host,Host";
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http_first="[M] [U] [V]\r\n.aixiao.me\rx-online-host: [host]\r\nhost: iread.wo.com.cn\r\n";
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[https]
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https_ip=10.0.0.172;
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https_port=80;
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https_del="Host";
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https_first="[M] [U] [V]\r\nHost: [host]\r\n";
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466
cproxy.c
466
cproxy.c
@ -12,8 +12,14 @@
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#include <sys/wait.h>
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#include <netinet/in.h>
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#include<sys/types.h>
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#include<sys/stat.h>
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#include<fcntl.h>
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#include <errno.h>
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#include "iniparser.h"
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#define LOG(fmt...) do { fprintf(stderr,"%s %s ",__DATE__,__TIME__); fprintf(stderr, ##fmt); } while(0)
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#define BUF_SIZE 8192
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#define PORT 9606
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#define MAX_HEADER_SIZE 8192
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char remote_host[128];
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@ -22,27 +28,11 @@ int local_port;
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int server_sock;
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int client_sock;
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int remote_sock;
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char * header_buffer ;
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char *header_buffer;
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enum
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{
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FLG_NONE = 0, // 正常数据流不进行编解码
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R_C_DEC = 1, // 读取客户端数据仅进行解码
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W_S_ENC = 2 // 发送到服务端进行编码
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};
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static int io_flag; // 网络io的一些标志位
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void handle_client(int client_sock, struct sockaddr_in client_addr);
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void forward_header(int destination_sock);
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void forward_data(int source_sock, int destination_sock);
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void rewrite_header();
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int send_data(int socket,char * buffer,int len );
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int receive_data(int socket, char * buffer, int len);
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void hand_mproxy_info_req(int sock,char * header_buffer) ;
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int create_connection() ;
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int _main(int argc, char *argv[]) ;
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int HTTPS = 0;
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#include "cproxy.h"
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ssize_t readLine(int fd, void *buffer, size_t n)
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{
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@ -90,34 +80,30 @@ ssize_t readLine(int fd, void *buffer, size_t n)
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return totRead;
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}
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int read_header(int fd, void * buffer)
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// 读取header
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int read_header(int fd, void *buffer)
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{
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memset(header_buffer,0,MAX_HEADER_SIZE);
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memset(header_buffer, 0, MAX_HEADER_SIZE);
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char line_buffer[2048];
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char * base_ptr = header_buffer;
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char *base_ptr = header_buffer;
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for(;;)
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{
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memset(line_buffer,0,2048);
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for (;;) {
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memset(line_buffer, 0, 2048);
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int total_read = readLine(fd,line_buffer,2048);
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if(total_read <= 0)
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{
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int total_read = readLine(fd, line_buffer, 2048);
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if (total_read <= 0) {
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return -1;
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}
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// 防止header缓冲区蛮越界
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if(base_ptr + total_read - header_buffer <= MAX_HEADER_SIZE)
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{
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strncpy(base_ptr,line_buffer,total_read);
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if (base_ptr + total_read - header_buffer <= MAX_HEADER_SIZE) {
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strncpy(base_ptr, line_buffer, total_read);
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base_ptr += total_read;
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} else
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{
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} else {
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return -1;
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}
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// 读到了空行,http头结束
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if(strcmp(line_buffer,"\r\n") == 0 || strcmp(line_buffer,"\n") == 0)
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{
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if (strcmp(line_buffer, "\r\n") == 0 || strcmp(line_buffer, "\n") == 0) {
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break;
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}
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@ -126,70 +112,53 @@ int read_header(int fd, void * buffer)
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}
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void extract_server_path(const char * header,char * output)
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// 提取主机、端口
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int extract_host(char *header)
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{
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char * p = strstr(header,"GET /");
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if(p) {
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char * p1 = strchr(p+4,' ');
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strncpy(output,p+4,(int)(p1 - p - 4) );
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}
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char *_p = strstr(header, "CONNECT"); // 在 CONNECT 方法中解析 隧道主机名称及端口号
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if (_p) {
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char *_p1 = strchr(_p, ' ');
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char *_p2 = strchr(_p1 + 1, ':');
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char *_p3 = strchr(_p1 + 1, ' ');
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}
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int extract_host(const char * header)
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{
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char * _p = strstr(header,"CONNECT"); // 在 CONNECT 方法中解析 隧道主机名称及端口号
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if(_p)
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{
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char * _p1 = strchr(_p,' ');
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char * _p2 = strchr(_p1 + 1,':');
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char * _p3 = strchr(_p1 + 1,' ');
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if(_p2)
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{
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if (_p2) {
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char s_port[10];
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bzero(s_port,10);
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strncpy(remote_host,_p1+1,(int)(_p2 - _p1) - 1);
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strncpy(s_port,_p2+1,(int) (_p3 - _p2) -1);
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bzero(s_port, 10);
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strncpy(remote_host, _p1 + 1, (int)(_p2 - _p1) - 1);
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strncpy(s_port, _p2 + 1, (int)(_p3 - _p2) - 1);
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remote_port = atoi(s_port);
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} else
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{
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strncpy(remote_host,_p1+1,(int)(_p3 - _p1) -1);
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} else {
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strncpy(remote_host, _p1 + 1, (int)(_p3 - _p1) - 1);
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remote_port = 80;
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}
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return 0;
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}
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char * p = strstr(header,"Host:");
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if(!p)
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{
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char *p = strstr(header, "Host:");
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if (!p) {
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return -1;
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}
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char * p1 = strchr(p,'\n');
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if(!p1)
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{
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char *p1 = strchr(p, '\n');
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if (!p1) {
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return -1;
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}
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char * p2 = strchr(p + 5,':'); // 5是指'Host:'的长度
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if(p2 && p2 < p1)
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{
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int p_len = (int)(p1 - p2 -1);
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char *p2 = strchr(p + 5, ':'); // 5是指'Host:'的长度
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if (p2 && p2 < p1) {
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int p_len = (int)(p1 - p2 - 1);
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char s_port[p_len];
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strncpy(s_port,p2+1,p_len);
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strncpy(s_port, p2 + 1, p_len);
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s_port[p_len] = '\0';
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remote_port = atoi(s_port);
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int h_len = (int)(p2 - p -5 -1 );
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strncpy(remote_host,p + 5 + 1 ,h_len); // Host:
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int h_len = (int)(p2 - p - 5 - 1);
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strncpy(remote_host, p + 5 + 1, h_len); // Host:
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remote_host[h_len] = '\0';
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} else
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{
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int h_len = (int)(p1 - p - 5 -1 -1);
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strncpy(remote_host,p + 5 + 1,h_len);
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} else {
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int h_len = (int)(p1 - p - 5 - 1 - 1);
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strncpy(remote_host, p + 5 + 1, h_len);
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remote_host[h_len] = '\0';
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remote_port = 80;
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}
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@ -200,92 +169,134 @@ int extract_host(const char * header)
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// 响应隧道连接请求
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int send_tunnel_ok(int client_sock)
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{
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char * resp = "HTTP/1.1 200 Connection Established\r\n\r\n";
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char *resp = "HTTP/1.1 200 Connection Established\r\n\r\n"; // 把字符串写入client_sock流
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int len = strlen(resp);
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char buffer[len+1];
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strcpy(buffer,resp);
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if(send_data(client_sock,buffer,len) < 0)
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{
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char buffer[len + 1];
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strcpy(buffer, resp);
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if (send_data(client_sock, buffer, len) < 0) {
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return -1;
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}
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return 0;
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}
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void hand_mproxy_info_req(int sock, char * header) {
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char server_path[255] ;
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char response[8192];
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extract_server_path(header,server_path);
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// 转发数据,读取source_sock流发送到destination_sock流
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void forward_data(int source_sock, int destination_sock)
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{
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char buffer[BUF_SIZE];
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int n;
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while ((n = receive_data(source_sock, buffer, BUF_SIZE)) > 0) {
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send_data(destination_sock, buffer, n);
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}
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shutdown(destination_sock, SHUT_RDWR);
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shutdown(source_sock, SHUT_RDWR);
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}
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char info_buf[1024];
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sprintf(response,"HTTP/1.0 200 OK\nServer: CProxy/0.1\n\
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Content-type: text/html; charset=utf-8\n\n\
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<html><body>\
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<pre>%s</pre>\
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</body></html>\n",info_buf);
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// 转发头字符串到destination_sock
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void forward_header(int destination_sock)
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{
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rewrite_header();
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int len = strlen(header_buffer);
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send_data(destination_sock, header_buffer, len);
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}
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write(sock,response,strlen(response));
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// 代理中的完整URL转发前需改成 path 的形式
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void rewrite_header()
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{
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char *p = strstr(header_buffer, "http://");
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char *p0 = strchr(p, '\0');
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char *p5 = strstr(header_buffer, "HTTP/"); // "HTTP/" 是协议标识 如 "HTTP/1.1"
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int len = strlen(header_buffer);
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if (p) {
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char *p1 = strchr(p + 7, '/');
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if (p1 && (p5 > p1)) {
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// 转换url到 path
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memcpy(p, p1, (int)(p0 - p1));
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int l = len - (p1 - p);
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header_buffer[l] = '\0';
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} else {
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char *p2 = strchr(p, ' '); // GET http://3g.sina.com.cn HTTP/1.1
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memcpy(p + 1, p2, (int)(p0 - p2));
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*p = '/'; // url 没有路径使用根
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int l = len - (p2 - p) + 1;
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header_buffer[l] = '\0';
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}
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}
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}
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// 接收数据
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int receive_data(int socket, char *buffer, int len)
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{
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int n = recv(socket, buffer, len, 0);
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return n;
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}
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// 发送数据
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int send_data(int socket, char *buffer, int len)
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{
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return send(socket, buffer, len, 0);
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}
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// 创建连接
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int create_connection()
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{
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struct sockaddr_in server_addr;
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struct hostent *server;
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int sock;
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if ((sock = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
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return -1;
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}
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if ((server = gethostbyname(remote_host)) == NULL) {
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errno = EFAULT;
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return -1;
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}
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memset(&server_addr, 0, sizeof(server_addr));
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server_addr.sin_family = AF_INET;
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memcpy(&server_addr.sin_addr.s_addr, server->h_addr, server->h_length);
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server_addr.sin_port = htons(remote_port);
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if (connect(sock, (struct sockaddr *)&server_addr, sizeof(server_addr)) < 0) {
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return -1;
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}
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return sock;
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}
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// 处理客户端的连接
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void handle_client(int client_sock, struct sockaddr_in client_addr)
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{
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int is_http_tunnel = 0;
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if(strlen(remote_host) == 0) // 未指定远端主机名称从http 请求 HOST 字段中获取
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{
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if(read_header(client_sock,header_buffer) < 0)
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{
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return;
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} else
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{
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char * p = strstr(header_buffer,"CONNECT"); // 判断是否是http 隧道请求
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if(p)
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{
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is_http_tunnel = 1;
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}
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read_header(client_sock, header_buffer);
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extract_host(header_buffer);
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replacement_http_head(header_buffer, remote_host, &remote_port, &HTTPS);
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if(strstr(header_buffer,"GET /cproxy") > 0)
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{
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hand_mproxy_info_req(client_sock,header_buffer);
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return;
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}
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printf("%s\n", remote_host);
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printf("%d\n", remote_port);
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printf("%d\n", HTTPS);
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printf("%s", header_buffer);
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if(extract_host(header_buffer) < 0)
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{
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return;
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}
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}
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}
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if ((remote_sock = create_connection()) < 0) {
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if ((remote_sock = create_connection()) < 0) { // 先创建连接
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return;
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}
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if (fork() == 0) { // 创建子进程用于从客户端转发数据到远端socket接口
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if(strlen(header_buffer) > 0 && !is_http_tunnel)
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{
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if (HTTPS == 0) {
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forward_header(remote_sock); //普通的http请求先转发header
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forward_data(client_sock, remote_sock);
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} else {
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char buffer[BUF_SIZE];
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int n;
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while ((n = read(client_sock, buffer, BUF_SIZE)) > 0) {
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write(remote_sock, buffer, n);
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}
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}
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forward_data(client_sock, remote_sock);
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exit(0);
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}
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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
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if(io_flag == W_S_ENC)
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{
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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
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} else if (io_flag == R_C_DEC)
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{
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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
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}
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if(is_http_tunnel)
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{
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if (HTTPS == 1) {
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send_tunnel_ok(client_sock);
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}
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forward_data(remote_sock, client_sock);
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exit(0);
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}
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@ -294,125 +305,112 @@ void handle_client(int client_sock, struct sockaddr_in client_addr)
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close(client_sock);
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}
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void forward_data(int source_sock, int destination_sock) {
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char buffer[BUF_SIZE];
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int n;
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// 守护
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int init_daemon(int nochdir, int noclose)
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{
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char *inifile = "conf/cproxy.ini";
|
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dictionary *ini = iniparser_load(inifile);
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const char *PID_FILE = iniparser_getstring(ini, "server:PID_FILE", NULL);
|
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FILE *fp = fopen(PID_FILE, "w");
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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)
|
||||
{
|
||||
send_data(destination_sock, buffer, n);
|
||||
if ((pid = fork()) < 0) {
|
||||
return -1;
|
||||
} else if (0 != pid) {
|
||||
exit(0);
|
||||
}
|
||||
//child 1 continues...
|
||||
|
||||
//become session leader
|
||||
if (setsid() < 0) {
|
||||
return -1;
|
||||
}
|
||||
|
||||
shutdown(destination_sock, SHUT_RDWR);
|
||||
shutdown(source_sock, SHUT_RDWR);
|
||||
}
|
||||
|
||||
void forward_header(int destination_sock)
|
||||
{
|
||||
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';
|
||||
|
||||
signal(SIGHUP, SIG_IGN);
|
||||
if ((pid = fork()) < 0) {
|
||||
return -1;
|
||||
} else if (0 != pid) {
|
||||
fprintf(fp, "%d", pid);
|
||||
exit(0);
|
||||
}
|
||||
}
|
||||
}
|
||||
//child 2 continues...
|
||||
|
||||
int receive_data(int socket, char * buffer, int len)
|
||||
{
|
||||
int n = recv(socket, buffer, len, 0);
|
||||
if(io_flag == R_C_DEC && n > 0)
|
||||
{
|
||||
//change working directory
|
||||
if (0 == nochdir) {
|
||||
chdir("/");
|
||||
}
|
||||
//close off file descriptors
|
||||
/*
|
||||
int i;
|
||||
for(i = 0; i< n; i++ )
|
||||
{
|
||||
buffer[i] ^= 1;
|
||||
}
|
||||
for (i = 0; i < 64; i++) {
|
||||
close(i);
|
||||
}
|
||||
*/
|
||||
|
||||
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)
|
||||
{
|
||||
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;
|
||||
while (waitpid(-1, NULL, WNOHANG) > 0) ;
|
||||
}
|
||||
|
||||
// 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 =
|
||||
accept(server_sock, (struct sockaddr *) &clnt_addr,
|
||||
int client_socket = 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);
|
||||
}
|
||||
|
18
cproxy.h
Normal file
18
cproxy.h
Normal file
@ -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);
|
322
cproxy_request.c
Normal file
322
cproxy_request.c
Normal file
@ -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;
|
||||
}
|
Loading…
Reference in New Issue
Block a user