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/*
This file is part of GNUnet.
(C) 2012 Christian Grothoff (and other contributing authors)
GNUnet is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
by the Free Software Foundation; either version 3, or (at your
option) any later version.
GNUnet is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNUnet; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
#include "platform.h"
#include <gnunet_util_lib.h>
#include <microhttpd.h>
#include "gns_proxy_proto.h"
#include "gns.h"
#define GNUNET_GNS_PROXY_PORT 7777
//TODO maybe make this an api call
/**
* Checks if name is in tld
*
* @param name the name to check
* @param tld the TLD to check for
* @return GNUNET_YES or GNUNET_NO
*/
int
is_tld(const char* name, const char* tld)
{
int offset = 0;
if (strlen(name) <= strlen(tld))
{
return GNUNET_NO;
}
offset = strlen(name)-strlen(tld);
if (strcmp (name+offset, tld) != 0)
{
GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
"%s is not in .%s TLD\n", name, tld);
return GNUNET_NO;
}
return GNUNET_YES;
}
struct Socks5Request
{
struct GNUNET_NETWORK_Handle *sock;
struct GNUNET_NETWORK_Handle *remote_sock;
int state;
GNUNET_SCHEDULER_TaskIdentifier rtask;
GNUNET_SCHEDULER_TaskIdentifier fwdrtask;
GNUNET_SCHEDULER_TaskIdentifier wtask;
GNUNET_SCHEDULER_TaskIdentifier fwdwtask;
char rbuf[2048];
char wbuf[2048];
unsigned int rbuf_len;
unsigned int wbuf_len;
};
unsigned long port = GNUNET_GNS_PROXY_PORT;
static struct GNUNET_NETWORK_Handle *lsock;
GNUNET_SCHEDULER_TaskIdentifier ltask;
static struct MHD_Daemon *httpd;
static GNUNET_SCHEDULER_TaskIdentifier httpd_task;
static int
con_val_iter (void *cls,
enum MHD_ValueKind kind,
const char *key,
const char *value)
{
char* buf = (char*)cls;
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"%s:%s\n", key, value);
if (0 == strcmp ("Host", key))
{
strcpy (buf, value);
return MHD_NO;
}
return MHD_YES;
}
/**
* Main MHD callback for handling requests.
*
* @param cls unused
* @param connection MHD connection handle
* @param method the HTTP method used ("GET", "PUT", etc.)
* @param version the HTTP version string (i.e. "HTTP/1.1")
* @param upload_data the data being uploaded (excluding HEADERS,
* for a POST that fits into memory and that is encoded
* with a supported encoding, the POST data will NOT be
* given in upload_data and is instead available as
* part of MHD_get_connection_values; very large POST
* data *will* be made available incrementally in
* upload_data)
* @param upload_data_size set initially to the size of the
* upload_data provided; the method must update this
* value to the number of bytes NOT processed;
* @param ptr pointer to location where we store the 'struct Request'
* @return MHD_YES if the connection was handled successfully,
* MHD_NO if the socket must be closed due to a serious
* error while handling the request
*/
static int
create_response (void *cls,
struct MHD_Connection *con,
const char *url,
const char *meth,
const char *ver,
const char *upload_data,
size_t *upload_data_size,
void **con_cls)
{
static int dummy;
const char* page = "<html><head><title>gnoxy</title>"\
"</head><body>gnoxy demo</body></html>";
struct MHD_Response *response;
char host[265];
int ret;
if (0 != strcmp (meth, "GET"))
return MHD_NO;
if (&dummy != *con_cls)
{
*con_cls = &dummy;
return MHD_YES;
}
if (0 != *upload_data_size)
return MHD_NO;
*con_cls = NULL;
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"url %s\n", url);
MHD_get_connection_values (con,
MHD_HEADER_KIND,
&con_val_iter, host);
response = MHD_create_response_from_buffer (strlen (page),
(void*)page,
MHD_RESPMEM_PERSISTENT);
ret = MHD_queue_response (con,
MHD_HTTP_OK,
response);
MHD_destroy_response (response);
return ret;
}
/**
* Task run whenever HTTP server operations are pending.
*
* @param cls unused
* @param tc sched context
*/
static void
do_httpd (void *cls,
const struct GNUNET_SCHEDULER_TaskContext *tc);
/**
* Schedule MHD
*/
static void
run_httpd ()
{
fd_set rs;
fd_set ws;
fd_set es;
struct GNUNET_NETWORK_FDSet *wrs;
struct GNUNET_NETWORK_FDSet *wws;
struct GNUNET_NETWORK_FDSet *wes;
int max;
int haveto;
unsigned MHD_LONG_LONG timeout;
struct GNUNET_TIME_Relative tv;
FD_ZERO (&rs);
FD_ZERO (&ws);
FD_ZERO (&es);
wrs = GNUNET_NETWORK_fdset_create ();
wes = GNUNET_NETWORK_fdset_create ();
wws = GNUNET_NETWORK_fdset_create ();
max = -1;
GNUNET_assert (MHD_YES == MHD_get_fdset (httpd, &rs, &ws, &es, &max));
haveto = MHD_get_timeout (httpd, &timeout);
if (haveto == MHD_YES)
tv.rel_value = (uint64_t) timeout;
else
tv = GNUNET_TIME_UNIT_FOREVER_REL;
GNUNET_NETWORK_fdset_copy_native (wrs, &rs, max + 1);
GNUNET_NETWORK_fdset_copy_native (wws, &ws, max + 1);
GNUNET_NETWORK_fdset_copy_native (wes, &es, max + 1);
if (httpd_task != GNUNET_SCHEDULER_NO_TASK)
GNUNET_SCHEDULER_cancel (httpd_task);
httpd_task =
GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_HIGH,
tv, wrs, wws,
&do_httpd, NULL);
GNUNET_NETWORK_fdset_destroy (wrs);
GNUNET_NETWORK_fdset_destroy (wws);
GNUNET_NETWORK_fdset_destroy (wes);
}
/**
* Task run whenever HTTP server operations are pending.
*
* @param cls unused
* @param tc sched context
*/
static void
do_httpd (void *cls,
const struct GNUNET_SCHEDULER_TaskContext *tc)
{
httpd_task = GNUNET_SCHEDULER_NO_TASK;
MHD_run (httpd);
run_httpd ();
}
/**
* Read data from socket
*
* @param cls the closure
* @param tc scheduler context
*/
static void
do_read (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
/**
* Read from remote end
*
* @param cls closure
* @param tc scheduler context
*/
static void
do_read_remote (void* cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
/**
* Write data to remote socket
*
* @param cls the closure
* @param tc scheduler context
*/
static void
do_write_remote (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
{
struct Socks5Request *s5r = cls;
unsigned int len;
s5r->fwdwtask = GNUNET_SCHEDULER_NO_TASK;
if ((NULL != tc->read_ready) &&
(GNUNET_NETWORK_fdset_isset (tc->write_ready, s5r->remote_sock)) &&
(len = GNUNET_NETWORK_socket_send (s5r->remote_sock, s5r->rbuf,
s5r->rbuf_len)))
{
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Successfully sent %d bytes to remote socket\n",
len);
}
else
{
GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING, "write remote");
//Really!?!?!?
if (s5r->rtask != GNUNET_SCHEDULER_NO_TASK)
GNUNET_SCHEDULER_cancel (s5r->rtask);
if (s5r->wtask != GNUNET_SCHEDULER_NO_TASK)
GNUNET_SCHEDULER_cancel (s5r->wtask);
if (s5r->fwdrtask != GNUNET_SCHEDULER_NO_TASK)
GNUNET_SCHEDULER_cancel (s5r->fwdrtask);
GNUNET_NETWORK_socket_close (s5r->remote_sock);
GNUNET_NETWORK_socket_close (s5r->sock);
GNUNET_free(s5r);
return;
}
s5r->rtask =
GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL,
s5r->sock,
&do_read, s5r);
}
/**
* Write data to socket
*
* @param cls the closure
* @param tc scheduler context
*/
static void
do_write (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
{
struct Socks5Request *s5r = cls;
unsigned int len;
s5r->wtask = GNUNET_SCHEDULER_NO_TASK;
if ((NULL != tc->read_ready) &&
(GNUNET_NETWORK_fdset_isset (tc->write_ready, s5r->sock)) &&
(len = GNUNET_NETWORK_socket_send (s5r->sock, s5r->wbuf,
s5r->wbuf_len)))
{
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Successfully sent %d bytes to socket\n",
len);
}
else
{
GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING, "write");
//Really!?!?!?
if (s5r->rtask != GNUNET_SCHEDULER_NO_TASK)
GNUNET_SCHEDULER_cancel (s5r->rtask);
if (s5r->fwdwtask != GNUNET_SCHEDULER_NO_TASK)
GNUNET_SCHEDULER_cancel (s5r->fwdwtask);
if (s5r->fwdrtask != GNUNET_SCHEDULER_NO_TASK)
GNUNET_SCHEDULER_cancel (s5r->fwdrtask);
GNUNET_NETWORK_socket_close (s5r->remote_sock);
GNUNET_NETWORK_socket_close (s5r->sock);
GNUNET_free(s5r);
return;
}
if ((s5r->state == SOCKS5_DATA_TRANSFER) &&
(s5r->fwdrtask == GNUNET_SCHEDULER_NO_TASK))
s5r->fwdrtask =
GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL,
s5r->remote_sock,
&do_read_remote, s5r);
}
/**
* Read from remote end
*
* @param cls closure
* @param tc scheduler context
*/
static void
do_read_remote (void* cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
{
struct Socks5Request *s5r = cls;
s5r->fwdrtask = GNUNET_SCHEDULER_NO_TASK;
if ((NULL != tc->write_ready) &&
(GNUNET_NETWORK_fdset_isset (tc->read_ready, s5r->remote_sock)) &&
(s5r->wbuf_len = GNUNET_NETWORK_socket_recv (s5r->remote_sock, s5r->wbuf,
sizeof (s5r->wbuf))))
{
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Successfully read %d bytes from remote socket\n",
s5r->wbuf_len);
}
else
{
if (s5r->wbuf_len == 0)
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"0 bytes received from remote... graceful shutdown!\n");
if (s5r->fwdwtask != GNUNET_SCHEDULER_NO_TASK)
GNUNET_SCHEDULER_cancel (s5r->fwdwtask);
if (s5r->rtask != GNUNET_SCHEDULER_NO_TASK)
GNUNET_SCHEDULER_cancel (s5r->rtask);
GNUNET_NETWORK_socket_close (s5r->remote_sock);
s5r->remote_sock = NULL;
GNUNET_NETWORK_socket_close (s5r->sock);
GNUNET_free(s5r);
return;
}
s5r->wtask = GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL,
s5r->sock,
&do_write, s5r);
}
static int
add_handle_to_mhd (struct GNUNET_NETWORK_Handle *h)
{
int fd;
struct sockaddr *addr;
socklen_t len;
fd = GNUNET_NETWORK_get_fd (h);
addr = GNUNET_NETWORK_get_addr (h);
len = GNUNET_NETWORK_get_addrlen (h);
return MHD_add_connection (httpd, fd, addr, len);
}
/**
* Read data from incoming connection
*
* @param cls the closure
* @param tc the scheduler context
*/
static void
do_read (void* cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
{
struct Socks5Request *s5r = cls;
struct socks5_client_hello *c_hello;
struct socks5_server_hello *s_hello;
struct socks5_client_request *c_req;
struct socks5_server_response *s_resp;
char domain[256];
uint8_t dom_len;
uint16_t req_port;
struct hostent *phost;
uint32_t remote_ip;
struct sockaddr_in remote_addr;
struct in_addr *r_sin_addr;
s5r->rtask = GNUNET_SCHEDULER_NO_TASK;
if ((NULL != tc->write_ready) &&
(GNUNET_NETWORK_fdset_isset (tc->read_ready, s5r->sock)) &&
(s5r->rbuf_len = GNUNET_NETWORK_socket_recv (s5r->sock, s5r->rbuf,
sizeof (s5r->rbuf))))
{
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Successfully read %d bytes from socket\n",
s5r->rbuf_len);
}
else
{
if (s5r->rbuf_len != 0)
GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING, "read");
else
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "client disco!\n");
if (s5r->fwdrtask != GNUNET_SCHEDULER_NO_TASK)
GNUNET_SCHEDULER_cancel (s5r->fwdrtask);
if (s5r->wtask != GNUNET_SCHEDULER_NO_TASK)
GNUNET_SCHEDULER_cancel (s5r->wtask);
if (s5r->fwdwtask != GNUNET_SCHEDULER_NO_TASK)
GNUNET_SCHEDULER_cancel (s5r->fwdwtask);
GNUNET_NETWORK_socket_close (s5r->remote_sock);
GNUNET_NETWORK_socket_close (s5r->sock);
GNUNET_free(s5r);
return;
}
if (s5r->state == SOCKS5_INIT)
{
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"SOCKS5 init\n");
c_hello = (struct socks5_client_hello*)&s5r->rbuf;
GNUNET_assert (c_hello->version == SOCKS_VERSION_5);
s_hello = (struct socks5_server_hello*)&s5r->wbuf;
s5r->wbuf_len = sizeof( struct socks5_server_hello );
s_hello->version = c_hello->version;
s_hello->auth_method = SOCKS_AUTH_NONE;
/* Write response to client */
s5r->wtask = GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL,
s5r->sock,
&do_write, s5r);
s5r->rtask = GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL,
s5r->sock,
&do_read, s5r);
s5r->state = SOCKS5_REQUEST;
return;
}
if (s5r->state == SOCKS5_REQUEST)
{
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Processing SOCKS5 request\n");
c_req = (struct socks5_client_request*)&s5r->rbuf;
s_resp = (struct socks5_server_response*)&s5r->wbuf;
//Only 10byte for ipv4 response!
s5r->wbuf_len = 10;//sizeof (struct socks5_server_response);
GNUNET_assert (c_req->addr_type == 3);
dom_len = *((uint8_t*)(&(c_req->addr_type) + 1));
memset(domain, 0, sizeof(domain));
strncpy(domain, (char*)(&(c_req->addr_type) + 2), dom_len);
req_port = *((uint16_t*)(&(c_req->addr_type) + 2 + dom_len));
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Requested connection is %s:%d\n",
domain,
ntohs(req_port));
if (is_tld (domain, GNUNET_GNS_TLD) ||
is_tld (domain, GNUNET_GNS_TLD_ZKEY))
{
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Requested connection is gnunet tld\n",
domain);
if (NULL == httpd)
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
_("Failed to start HTTP server\n"));
s_resp->version = 0x05;
s_resp->reply = 0x01;
s5r->wtask =
GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL,
s5r->sock,
&do_write, s5r);
//ERROR!
//TODO! close socket after the write! schedule task
//GNUNET_NETWORK_socket_close (s5r->sock);
//GNUNET_free(s5r);
return;
}
if (MHD_YES == add_handle_to_mhd ( s5r->sock ))
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Sucessfully added client to MHD!\n");
s_resp->version = 0x05;
s_resp->reply = 0x00;
s_resp->reserved = 0x00;
s_resp->addr_type = 0x01;
s5r->wtask =
GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL,
s5r->sock,
&do_write, s5r);
run_httpd ();
//GNUNET_free ( s5r );
//FIXME complete socks resp!
return;
}
else
{
phost = (struct hostent*)gethostbyname (domain);
if (phost == NULL)
{
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Resolve %s error!\n", domain );
s_resp->version = 0x05;
s_resp->reply = 0x01;
s5r->wtask =
GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL,
s5r->sock,
&do_write, s5r);
//ERROR!
//TODO! close socket after the write! schedule task
//GNUNET_NETWORK_socket_close (s5r->sock);
//GNUNET_free(s5r);
return;
}
s5r->remote_sock = GNUNET_NETWORK_socket_create (AF_INET,
SOCK_STREAM,
0);
r_sin_addr = (struct in_addr*)(phost->h_addr);
remote_ip = r_sin_addr->s_addr;
memset(&remote_addr, 0, sizeof(remote_addr));
remote_addr.sin_family = AF_INET;
#if HAVE_SOCKADDR_IN_SIN_LEN
remote_addr.sin_len = sizeof (remote_addr);
#endif
remote_addr.sin_addr.s_addr = remote_ip;
remote_addr.sin_port = req_port;
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"target server: %s:%u\n", inet_ntoa(remote_addr.sin_addr),
ntohs(req_port));
if ((GNUNET_OK !=
GNUNET_NETWORK_socket_connect ( s5r->remote_sock,
(const struct sockaddr*)&remote_addr,
sizeof (remote_addr)))
&& (errno != EINPROGRESS))
{
GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING, "connect");
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"socket request error...\n");
s_resp->version = 0x05;
s_resp->reply = 0x01;
s5r->wtask =
GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL,
s5r->sock,
&do_write, s5r);
//TODO see above
return;
}
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"new remote connection\n");
s_resp->version = 0x05;
s_resp->reply = 0x00;
s_resp->reserved = 0x00;
s_resp->addr_type = 0x01;
s5r->state = SOCKS5_DATA_TRANSFER;
s5r->wtask =
GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL,
s5r->sock,
&do_write, s5r);
s5r->rtask =
GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL,
s5r->sock,
&do_read, s5r);
}
return;
}
if (s5r->state == SOCKS5_DATA_TRANSFER)
{
if ((s5r->remote_sock == NULL) || (s5r->rbuf_len == 0))
{
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Closing connection to client\n");
if (s5r->rtask != GNUNET_SCHEDULER_NO_TASK)
GNUNET_SCHEDULER_cancel (s5r->rtask);
if (s5r->fwdwtask != GNUNET_SCHEDULER_NO_TASK)
GNUNET_SCHEDULER_cancel (s5r->fwdwtask);
if (s5r->fwdrtask != GNUNET_SCHEDULER_NO_TASK)
GNUNET_SCHEDULER_cancel (s5r->fwdrtask);
if (s5r->fwdrtask != GNUNET_SCHEDULER_NO_TASK)
GNUNET_SCHEDULER_cancel (s5r->fwdrtask);
if (s5r->remote_sock != NULL)
GNUNET_NETWORK_socket_close (s5r->remote_sock);
GNUNET_NETWORK_socket_close (s5r->sock);
GNUNET_free(s5r);
return;
}
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"forwarding %d bytes from client\n", s5r->rbuf_len);
s5r->fwdwtask =
GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL,
s5r->remote_sock,
&do_write_remote, s5r);
if (s5r->fwdrtask == GNUNET_SCHEDULER_NO_TASK)
{
s5r->fwdrtask =
GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL,
s5r->remote_sock,
&do_read_remote, s5r);
}
}
//GNUNET_CONTAINER_DLL_remove (s5conns.head, s5conns.tail, s5r);
}
/**
* Accept new incoming connections
*
* @param cls the closure
* @param tc the scheduler context
*/
static void
do_accept (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
{
struct GNUNET_NETWORK_Handle *s;
struct Socks5Request *s5r;
ltask = GNUNET_SCHEDULER_NO_TASK;
if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
return;
ltask = GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL,
lsock,
&do_accept, NULL);
s = GNUNET_NETWORK_socket_accept (lsock, NULL, NULL);
if (NULL == s)
{
GNUNET_log_strerror (GNUNET_ERROR_TYPE_INFO, "accept");
return;
}
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Got an inbound connection, waiting for data\n");
s5r = GNUNET_malloc (sizeof (struct Socks5Request));
s5r->sock = s;
s5r->state = SOCKS5_INIT;
s5r->wtask = GNUNET_SCHEDULER_NO_TASK;
s5r->fwdwtask = GNUNET_SCHEDULER_NO_TASK;
s5r->fwdrtask = GNUNET_SCHEDULER_NO_TASK;
s5r->rtask = GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL,
s5r->sock,
&do_read, s5r);
//GNUNET_CONTAINER_DLL_insert (s5conns.head, s5conns.tail, s5r);
}
/**
* Main function that will be run
*
* @param cls closure
* @param args remaining command-line arguments
* @param cfgfile name of the configuration file used (for saving, can be NULL!)
* @param cfg configuration
*/
static void
run (void *cls, char *const *args, const char *cfgfile,
const struct GNUNET_CONFIGURATION_Handle *cfg)
{
struct sockaddr_in sa;
memset (&sa, 0, sizeof (sa));
sa.sin_family = AF_INET;
sa.sin_port = htons (port);
#if HAVE_SOCKADDR_IN_SIN_LEN
sa.sin_len = sizeof (sa);
#endif
lsock = GNUNET_NETWORK_socket_create (AF_INET,
SOCK_STREAM,
0);
if ((NULL == lsock) ||
(GNUNET_OK !=
GNUNET_NETWORK_socket_bind (lsock, (const struct sockaddr *) &sa,
sizeof (sa))))
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Failed to create listen socket bound to `%s'",
GNUNET_a2s ((const struct sockaddr *) &sa, sizeof (sa)));
if (NULL != lsock)
GNUNET_NETWORK_socket_close (lsock);
return;
}
if (GNUNET_OK != GNUNET_NETWORK_socket_listen (lsock, 5))
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Failed to listen on socket bound to `%s'",
GNUNET_a2s ((const struct sockaddr *) &sa, sizeof (sa)));
return;
}
ltask = GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL,
lsock, &do_accept, NULL);
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Proxy listens on port %u\n",
port);
httpd = MHD_start_daemon (MHD_USE_DEBUG, 4444,
NULL, NULL,
&create_response, NULL,
MHD_OPTION_CONNECTION_LIMIT, (unsigned int) 128,
MHD_OPTION_CONNECTION_TIMEOUT, (unsigned int) 16,
MHD_OPTION_NOTIFY_COMPLETED,
NULL, NULL,
MHD_OPTION_END);
run_httpd ();
}
/**
* The main function for gnunet-gns-proxy.
*
* @param argc number of arguments from the command line
* @param argv command line arguments
* @return 0 ok, 1 on error
*/
int
main (int argc, char *const *argv)
{
static const struct GNUNET_GETOPT_CommandLineOption options[] = {
{'p', "port", NULL,
gettext_noop ("listen on specified port"), 1,
&GNUNET_GETOPT_set_string, &port},
GNUNET_GETOPT_OPTION_END
};
int ret;
GNUNET_log_setup ("gnunet-gns-proxy", "WARNING", NULL);
ret =
(GNUNET_OK ==
GNUNET_PROGRAM_run (argc, argv, "gnunet-gns-proxy",
_("GNUnet GNS proxy"),
options,
&run, NULL)) ? 0 : 1;
return ret;
}
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