aixiao/CProxy
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修改： Makefile

Browse Source 
修改：     conf.h
	修改：     conf/cproxy.ini
	新文件：   conf/cproxy.ini.explain
	修改：     cproxy.c
	修改：     cproxy.h
	修改：     cproxy_help.h
	修改：     cproxy_request.c
	修改：     cproxy_request.h
This commit is contained in:
aixiao 2019-02-16 17:28:47 +08:00
parent e0261c8942
commit a2f0dc3992
9 changed files with 93 additions and 42 deletions
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2
conf.h
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@ -3,6 +3,8 @@
#include "iniparser.h"
#include "cproxy.h"
void read_conf(char *file, conf *p);
void free_conf(conf *p);
#endif

6
conf/cproxy.ini
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@ -6,10 +6,10 @@ PID_FILE=log/cproxy.pid;
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";
http_first="[M] [U] [V]\r\n.aixiao.me\rx-online-host: [host]\r\nhost: iread.wo.cn\r\n";
[https]
https_ip=10.0.0.172;
https_port=80;
https_del="Host";
https_first="[M] [U]?wap.10010.com [V]\r\nHost: wap.10010.com:[port]\r\nX-Online-Host: [host]:[port]\r\n";
https_del=",Host";
https_first="[M] iread.wo.cn//https://[host]:[port]:iread.wo.cn [V]\r\nHost: iread.wo.cn\r\n";

8
conf/cproxy.ini.explain Normal file
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@ -0,0 +1,8 @@
模块: [server], [http], [https]
[http]、[https]模块关键字: [M], [U], [V], [host], [port], \r, \n, \v, \f, \b, \t, \a. 如果原本请求头含有关键字也会被替换.
[M] 原请求方法
[U] 原请求url
[V] 原请求协议版本
[host] 原请求host
[port] 原请求端口

16
cproxy.c
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@ -50,8 +50,6 @@ void handle_client(int client_sock, struct sockaddr_in client_addr, conf *config
replacement_http_head(header_buffer, remote_host, &remote_port, &SIGN, configure);
//printf("%s", header_buffer);
//printf("%s\n", remote_host);
//printf("%d\n", remote_port);
if ((remote_sock = create_connection(configure, SIGN)) < 0) {
return;
@ -103,7 +101,7 @@ void forward_data(int source_sock, int destination_sock)
shutdown(source_sock, SHUT_RDWR);
}
int create_connection(conf * configure, int SIGN)
int create_connection(conf *configure, int SIGN)
{
struct sockaddr_in server_addr;
struct hostent *server;
@ -173,7 +171,7 @@ int create_server_socket(int port)
}
// 守护
int init_daemon(int nochdir, int noclose, conf * configure)
int init_daemon(int nochdir, int noclose, conf *configure)
{
FILE *fp = fopen(configure->server_pid_file, "w");
int pid;
@ -225,20 +223,18 @@ void server_loop(conf * configure)
socklen_t addrlen = sizeof(client_addr);
while (1) {
client_sock =
accept(server_sock, (struct sockaddr *)&client_addr, &addrlen);
client_sock = accept(server_sock, (struct sockaddr *)&client_addr, &addrlen);
if (fork() == 0) { // 创建子进程处理客户端连接请求
close(server_sock);
handle_client(client_sock, client_addr, configure);
close(client_sock);
exit(0);
}
close(client_sock);
}
close(server_sock);
}
void start_server(conf * configure)
void start_server(conf *configure)
{
signal(SIGCHLD, sigchld_handler); // 防止子进程变成僵尸进程

20
cproxy.h
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@ -66,17 +66,23 @@ typedef struct CONF {
#define HTTP_OTHERS 3
#define HTTP_CONNECT 4
void read_conf(char *file, conf *p);
void free_conf(conf * p);
void server_loop(conf * configure);
char *read_data(int client_sock, char *data, int *data_len);
void servertoclient(int remote_sock, int client_sock, char *complete_data, int *len_complete_data);
void clienttoserver(int remote_sock, char *complete_data, int *len_complete_data);
void handle_client(int client_sock, struct sockaddr_in client_addr, conf *configure);
void forward_data(int source_sock, int destination_sock);
int send_data(int socket, char *buffer, int len);
int receive_data(int socket, char *buffer, int len);
int create_connection(conf * configure, int SIGN);
void forward_data(int source_sock, int destination_sock);
int create_connection(conf *configure, int SIGN);
int create_server_socket(int port);
int init_daemon(int nochdir, int noclose, conf * configure);
void sigchld_handler(int signal);
void server_loop(conf *configure);
void start_server(conf * configure);
int _main(int argc, char *argv[]);
void read_conf(char *file, conf *p);
void free_conf(conf *p);
int extract_host(char *header);
int replacement_http_head(char *header_buffer, char *remote_host, int *remote_port, int *SIGN, conf *p);
uint8_t request_type(char *req);

1
cproxy_help.h
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@ -5,6 +5,7 @@
#include "cproxy.h"
#define BUILD(fmt...) do { fprintf(stderr,"%s %s ",__DATE__,__TIME__); fprintf(stderr, ##fmt); } while(0)
char help_information(void);
#endif

49
cproxy_request.c
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@ -1,7 +1,5 @@
#include "cproxy_request.h"
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)
{
@ -193,6 +191,17 @@ void rewrite_header()
}
}
// 判断数字有几位
int numbin(int n)
{
int sum = 0;
while (n) {
sum++;
n /= 10;
}
return sum;
}
// 删除字符串header_buffer中第一位到character处,并拼接string,character必须存在.(string替换第一个字符到character处)
char *splice_head(char *header_buffer, const char *character, char *string)
{
@ -218,7 +227,7 @@ char *delete_header(char *header_buffer, const char *character, int string)
return strcat(header_buffer, p2 + 1);
}
int replacement_http_head(char *header_buffer, char *remote_host, int *remote_port, int *SIGN, conf * p)
int replacement_http_head(char *header_buffer, char *remote_host, int *remote_port, int *SIGN, conf *p)
{
char *http_firsts = (char *)malloc(strlen(p->http_first) + 1);
strcpy(http_firsts, p->http_first); // 拷贝http_first
@ -231,7 +240,7 @@ int replacement_http_head(char *header_buffer, char *remote_host, int *remote_po
char *new_http_del = malloc(strlen(p->http_del) + 1); // 拷贝http_del
strcpy(new_http_del, p->http_del);
char *new_https_del = malloc(strlen(p->https_del) + 1); // // 拷贝https_del
char *new_https_del = malloc(strlen(p->https_del) + 1); // 拷贝https_del
strcpy(new_https_del, p->https_del);
if (*SIGN == HTTP) {
@ -273,7 +282,6 @@ int replacement_http_head(char *header_buffer, char *remote_host, int *remote_po
//printf("%s", V);
char *new_header_buffer = (char *)malloc(strlen(splice_head(header_buffer_backup, "\n", http_firsts)) + 1);
//char *new_header_buffer = (char *)malloc(BUF_SIZES);
strcpy(new_header_buffer, splice_head(header_buffer_backup, "\n", http_firsts));
int len = strlen(new_header_buffer);
@ -286,6 +294,19 @@ int replacement_http_head(char *header_buffer, char *remote_host, int *remote_po
new_header_buffer = replace(new_header_buffer, &len, "[U]", 3, U, len_u);
new_header_buffer = replace(new_header_buffer, &len, "[V]", 3, V, len_v);
new_header_buffer = replace(new_header_buffer, &len, "[host]", 6, remote_host, len_remote_host);
char port_copy[numbin(*remote_port) + 1];
sprintf(port_copy, "%d", *remote_port);
int len_remote_port = strlen(port_copy);
new_header_buffer = replace(new_header_buffer, &len, "[port]", 6, port_copy, len_remote_port);
new_header_buffer = replace(new_header_buffer, &len, "\\r", 2, "\r", 1);
new_header_buffer = replace(new_header_buffer, &len, "\\n", 2, "\n", 1);
new_header_buffer = replace(new_header_buffer, &len, "\\b", 2, "\b", 1);
new_header_buffer = replace(new_header_buffer, &len, "\\v", 2, "\v", 1);
new_header_buffer = replace(new_header_buffer, &len, "\\f", 2, "\f", 1);
new_header_buffer = replace(new_header_buffer, &len, "\\a", 2, "\a", 1);
new_header_buffer = replace(new_header_buffer, &len, "\\t", 2, "\t", 1);
new_header_buffer = replace(new_header_buffer, &len, "\\r", 2, "\r", 1);
new_header_buffer = replace(new_header_buffer, &len, "\\n", 2, "\n", 1);
@ -332,15 +353,12 @@ int replacement_http_head(char *header_buffer, char *remote_host, int *remote_po
// V
p4 = p4 + 1;
//del_chr(p4, '\r');
//del_chr(p4, '\n');
l = strlen(p4);
char *V = (char *)malloc(l);
strncpy_(V, p4, 8);
//printf("%s", V);
char *new_header_buffer = (char *) malloc(strlen(splice_head(header_buffer_backup, "\n", https_firsts)) + 1);
//char *new_header_buffer = (char *) malloc(BUF_SIZES);
strcpy(new_header_buffer, splice_head(header_buffer_backup, "\n", https_firsts));
int len = strlen(new_header_buffer);
@ -353,11 +371,18 @@ int replacement_http_head(char *header_buffer, char *remote_host, int *remote_po
new_header_buffer = replace(new_header_buffer, &len, "[V]", 3, V, len_v);
new_header_buffer = replace(new_header_buffer, &len, "[host]", 6, remote_host, len_remote_host);
char port_num[9];
sprintf(port_num, "%d", *remote_port);
int len_remote_port = strlen(port_num);
new_header_buffer = replace(new_header_buffer, &len, "[port]", 6, port_num, len_remote_port);
char port_copy[numbin(*remote_port) + 1];
sprintf(port_copy, "%d", *remote_port);
int len_remote_port = strlen(port_copy);
new_header_buffer = replace(new_header_buffer, &len, "[port]", 6, port_copy, len_remote_port);
new_header_buffer = replace(new_header_buffer, &len, "\\r", 2, "\r", 1);
new_header_buffer = replace(new_header_buffer, &len, "\\n", 2, "\n", 1);
new_header_buffer = replace(new_header_buffer, &len, "\\b", 2, "\b", 1);
new_header_buffer = replace(new_header_buffer, &len, "\\v", 2, "\v", 1);
new_header_buffer = replace(new_header_buffer, &len, "\\f", 2, "\f", 1);
new_header_buffer = replace(new_header_buffer, &len, "\\a", 2, "\a", 1);
new_header_buffer = replace(new_header_buffer, &len, "\\t", 2, "\t", 1);
new_header_buffer = replace(new_header_buffer, &len, "\\r", 2, "\r", 1);
new_header_buffer = replace(new_header_buffer, &len, "\\n", 2, "\n", 1);

13
cproxy_request.h
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@ -4,7 +4,20 @@
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <regex.h>
#include "cproxy.h"
void *memmem(const void *haystack, size_t haystacklen, const void *needle, size_t needlelen);
char *replace(char *replace_memory, int *replace_memory_len, const char *src, const int src_len, const char *dest, const int dest_len);
void del_chr(char *s, char ch);
char *strncpy_(char *dest, const char *src, size_t n);
uint8_t request_type(char *req);
int extract_host(char *header);
void forward_header(int destination_sock);
void rewrite_header();
int numbin(int n);
char *splice_head(char *header_buffer, const char *character, char *string);
char *delete_header(char *header_buffer, const char *character, int string);
int replacement_http_head(char *header_buffer, char *remote_host, int *remote_port, int *SIGN, conf *p);
#endif