diff options
Diffstat (limited to 'src/gns/gnunet-gns-proxy.c')
| -rw-r--r-- | src/gns/gnunet-gns-proxy.c | 815 |
1 files changed, 815 insertions, 0 deletions
diff --git a/src/gns/gnunet-gns-proxy.c b/src/gns/gnunet-gns-proxy.c new file mode 100644 index 0000000..876f531 --- /dev/null +++ b/src/gns/gnunet-gns-proxy.c @@ -0,0 +1,815 @@ +/* + 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; +} |