122 lines
3.2 KiB
C
122 lines
3.2 KiB
C
#include "event2/event-config.h"
|
|
|
|
#include <event2/event.h>
|
|
#include <event2/http.h>
|
|
#include <event2/http_struct.h>
|
|
#include <event2/buffer.h>
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
#include <limits.h>
|
|
|
|
#define VERIFY(cond) do { \
|
|
if (!(cond)) { \
|
|
fprintf(stderr, "[error] %s\n", #cond); \
|
|
exit(EXIT_FAILURE); \
|
|
} \
|
|
} while (0); \
|
|
|
|
#define URL_MAX 4096
|
|
|
|
struct connect_base
|
|
{
|
|
struct evhttp_connection *evcon;
|
|
struct evhttp_uri *location;
|
|
};
|
|
|
|
static void get_cb(struct evhttp_request *req, void *arg)
|
|
{
|
|
ev_ssize_t len;
|
|
struct evbuffer *evbuf;
|
|
struct evhttp_connection *evcon;
|
|
|
|
VERIFY(req);
|
|
evcon = evhttp_request_get_connection(req);
|
|
VERIFY(evcon);
|
|
|
|
evbuf = evhttp_request_get_input_buffer(req);
|
|
len = evbuffer_get_length(evbuf);
|
|
fwrite(evbuffer_pullup(evbuf, len), len, 1, stdout);
|
|
evbuffer_drain(evbuf, len);
|
|
}
|
|
|
|
static void connect_cb(struct evhttp_request *proxy_req, void *arg)
|
|
{
|
|
char buffer[URL_MAX];
|
|
|
|
struct connect_base *base = arg;
|
|
struct evhttp_connection *evcon = base->evcon;
|
|
struct evhttp_uri *location = base->location;
|
|
|
|
VERIFY(proxy_req);
|
|
if (evcon) {
|
|
struct evhttp_request *req = evhttp_request_new(get_cb, NULL);
|
|
evhttp_add_header(req->output_headers, "Connection", "close");
|
|
VERIFY(!evhttp_make_request(evcon, req, EVHTTP_REQ_GET,
|
|
evhttp_uri_join(location, buffer, URL_MAX)));
|
|
}
|
|
}
|
|
|
|
int main(int argc, const char **argv)
|
|
{
|
|
char buffer[URL_MAX];
|
|
|
|
struct evhttp_uri *host_port;
|
|
struct evhttp_uri *location;
|
|
struct evhttp_uri *proxy;
|
|
|
|
struct event_base *base;
|
|
struct evhttp_connection *evcon;
|
|
struct evhttp_request *req;
|
|
|
|
struct connect_base connect_base;
|
|
|
|
if (argc != 3) {
|
|
printf("Usage: %s proxy url\n", argv[0]);
|
|
return 1;
|
|
}
|
|
|
|
{
|
|
VERIFY(proxy = evhttp_uri_parse(argv[1]));
|
|
VERIFY(evhttp_uri_get_host(proxy));
|
|
VERIFY(evhttp_uri_get_port(proxy) > 0);
|
|
}
|
|
{
|
|
host_port = evhttp_uri_parse(argv[2]);
|
|
evhttp_uri_set_scheme(host_port, NULL);
|
|
evhttp_uri_set_userinfo(host_port, NULL);
|
|
evhttp_uri_set_path(host_port, NULL);
|
|
evhttp_uri_set_query(host_port, NULL);
|
|
evhttp_uri_set_fragment(host_port, NULL);
|
|
VERIFY(evhttp_uri_get_host(host_port));
|
|
VERIFY(evhttp_uri_get_port(host_port) > 0);
|
|
}
|
|
{
|
|
location = evhttp_uri_parse(argv[2]);
|
|
evhttp_uri_set_scheme(location, NULL);
|
|
evhttp_uri_set_userinfo(location, 0);
|
|
evhttp_uri_set_host(location, NULL);
|
|
evhttp_uri_set_port(location, -1);
|
|
}
|
|
|
|
VERIFY(base = event_base_new());
|
|
VERIFY(evcon = evhttp_connection_base_new(base, NULL,
|
|
evhttp_uri_get_host(proxy), evhttp_uri_get_port(proxy)));
|
|
connect_base.evcon = evcon;
|
|
connect_base.location = location;
|
|
VERIFY(req = evhttp_request_new(connect_cb, &connect_base));
|
|
|
|
evhttp_add_header(req->output_headers, "Connection", "keep-alive");
|
|
evhttp_add_header(req->output_headers, "Proxy-Connection", "keep-alive");
|
|
evutil_snprintf(buffer, URL_MAX, "%s:%d",
|
|
evhttp_uri_get_host(host_port), evhttp_uri_get_port(host_port));
|
|
evhttp_make_request(evcon, req, EVHTTP_REQ_CONNECT, buffer);
|
|
|
|
event_base_dispatch(base);
|
|
evhttp_connection_free(evcon);
|
|
event_base_free(base);
|
|
evhttp_uri_free(proxy);
|
|
evhttp_uri_free(host_port);
|
|
evhttp_uri_free(location);
|
|
return 0;
|
|
}
|