2 This file is part of GNUnet.
3 (C) 2012 Christian Grothoff (and other contributing authors)
5 GNUnet is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published
7 by the Free Software Foundation; either version 3, or (at your
8 option) any later version.
10 GNUnet is distributed in the hope that it will be useful, but
11 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with GNUnet; see the file COPYING. If not, write to the
17 Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA.
22 #include <gnunet_util_lib.h>
23 #include <gnunet_gns_service.h>
24 #include <microhttpd.h>
25 #include <curl/curl.h>
27 #include "gns_proxy_proto.h"
31 #include <gnutls/gnutls.h>
32 #include <gnutls/x509.h>
33 #include <gnutls/abstract.h>
34 #include <gnutls/crypto.h>
37 #define HAVE_MHD_NO_LISTEN_SOCKET MHD_VERSION >= 0x00091401
39 #define GNUNET_GNS_PROXY_PORT 7777
40 #define MHD_MAX_CONNECTIONS 300
41 #define MAX_HTTP_URI_LENGTH 2048
42 #define POSTBUFFERSIZE 4096
44 /* MHD/cURL defines */
45 #define BUF_WAIT_FOR_CURL 0
46 #define BUF_WAIT_FOR_MHD 1
47 #define BUF_WAIT_FOR_PP 2
48 #define HTML_HDR_CONTENT "Content-Type: text/html"
50 /* buffer padding for proper RE matching */
51 #define CURL_BUF_PADDING 1000
54 //#define RE_DOTPLUS "<a href=\"http://(([A-Za-z]+[.])+)([+])"
55 #define RE_A_HREF "href=\"https?://(([A-Za-z0-9]+[.])+)([+]|[a-z]+)"
56 #define RE_N_MATCHES 4
58 /* The usual suspects */
60 #define HTTPS_PORT 443
64 * A structure for CA cert/key
69 gnutls_x509_crt_t cert;
72 gnutls_x509_privkey_t key;
75 #define MAX_PEM_SIZE (10 * 1024)
78 * Structure for GNS certificates
80 struct ProxyGNSCertificate
82 /* The certificate as PEM */
83 char cert[MAX_PEM_SIZE];
85 /* The private key as PEM */
86 char key[MAX_PEM_SIZE];
91 * A structure for socks requests
95 /* The client socket */
96 struct GNUNET_NETWORK_Handle *sock;
98 /* The server socket */
99 struct GNUNET_NETWORK_Handle *remote_sock;
101 /* The socks state */
104 /* Client socket read task */
105 GNUNET_SCHEDULER_TaskIdentifier rtask;
107 /* Server socket read task */
108 GNUNET_SCHEDULER_TaskIdentifier fwdrtask;
110 /* Client socket write task */
111 GNUNET_SCHEDULER_TaskIdentifier wtask;
113 /* Server socket write task */
114 GNUNET_SCHEDULER_TaskIdentifier fwdwtask;
122 /* Length of data in read buffer */
123 unsigned int rbuf_len;
125 /* Length of data in write buffer */
126 unsigned int wbuf_len;
128 /* This handle is scheduled for cleanup? */
131 /* Shall we close the client socket on cleanup? */
136 * DLL for Network Handles
138 struct NetworkHandleList
141 struct NetworkHandleList *next;
144 struct NetworkHandleList *prev;
147 struct GNUNET_NETWORK_Handle *h;
151 * A structure for all running Httpds
156 struct MhdHttpList *prev;
159 struct MhdHttpList *next;
161 /* is this an ssl daemon? */
164 /* the domain name to server (only important for SSL) */
167 /* The daemon handle */
168 struct MHD_Daemon *daemon;
170 /* Optional proxy certificate used */
171 struct ProxyGNSCertificate *proxy_cert;
174 GNUNET_SCHEDULER_TaskIdentifier httpd_task;
176 /* Handles associated with this daemon */
177 struct NetworkHandleList *socket_handles_head;
179 /* Handles associated with this daemon */
180 struct NetworkHandleList *socket_handles_tail;
184 * A structure for MHD<->cURL streams
189 struct ProxyCurlTask *prev;
192 struct ProxyCurlTask *next;
197 /* Optional header replacements for curl (LEHO) */
198 struct curl_slist *headers;
200 /* Optional resolver replacements for curl (LEHO) */
201 struct curl_slist *resolver;
203 /* curl response code */
204 long curl_response_code;
206 /* The URL to fetch */
207 char url[MAX_HTTP_URI_LENGTH];
209 /* The cURL write buffer / MHD read buffer */
210 char buffer[CURL_MAX_WRITE_SIZE + CURL_BUF_PADDING];
212 /* Read pos of the data in the buffer */
213 char *buffer_read_ptr;
215 /* Write pos in the buffer */
216 char *buffer_write_ptr;
218 /* The buffer status (BUF_WAIT_FOR_CURL or BUF_WAIT_FOR_MHD) */
221 /* Number of bytes in buffer */
222 unsigned int bytes_in_buffer;
224 /* Indicates wheather the download is in progress */
225 int download_in_progress;
227 /* Indicates wheather the download was successful */
228 int download_is_finished;
230 /* Indicates wheather the download failed */
233 /* Indicates wheather we need to parse HTML */
236 /* Indicates wheather we are postprocessing the HTML right now */
237 int is_postprocessing;
239 /* Indicates wheather postprocessing has finished */
243 GNUNET_SCHEDULER_TaskIdentifier pp_task;
246 struct ProxyREMatch *pp_match_head;
249 struct ProxyREMatch *pp_match_tail;
251 /* The authority of the corresponding host (site of origin) */
254 /* The hostname (Host header field) */
260 /* The LEgacy HOstname (can be empty) */
263 /* The associated daemon list entry */
264 struct MhdHttpList *mhd;
266 /* The associated response */
267 struct MHD_Response *response;
270 struct ProxySetCookieHeader *set_cookies_head;
273 struct ProxySetCookieHeader *set_cookies_tail;
275 /* connection status */
282 struct MHD_Connection *connection;
285 size_t put_read_offset;
286 size_t put_read_size;
289 struct MHD_PostProcessor *post_handler;
292 struct ProxyPostData *post_data_head;
293 struct ProxyPostData *post_data_tail;
297 /* the type of POST encoding */
303 * Struct for RE matches in postprocessing of HTML
308 struct ProxyREMatch *next;
311 struct ProxyREMatch *prev;
320 struct GNUNET_GNS_ShortenRequest *shorten_task;
325 /* start of match in buffer */
328 /* end of match in buffer */
331 /* associated proxycurltask */
332 struct ProxyCurlTask *ctask;
336 * Struct for set-cookies
338 struct ProxySetCookieHeader
341 struct ProxySetCookieHeader *next;
344 struct ProxySetCookieHeader *prev;
351 * Post data structure
356 struct ProxyPostData *next;
359 struct ProxyPostData *prev;
372 /* The port the proxy is running on (default 7777) */
373 static unsigned long port = GNUNET_GNS_PROXY_PORT;
375 /* The CA file (pem) to use for the proxy CA */
376 static char* cafile_opt;
378 /* The listen socket of the proxy */
379 static struct GNUNET_NETWORK_Handle *lsock;
381 /* The listen task ID */
382 GNUNET_SCHEDULER_TaskIdentifier ltask;
384 /* The cURL download task */
385 GNUNET_SCHEDULER_TaskIdentifier curl_download_task;
387 /* The non SSL httpd daemon handle */
388 static struct MHD_Daemon *httpd;
390 /* Number of current mhd connections */
391 static unsigned int total_mhd_connections;
393 /* The cURL multi handle */
394 static CURLM *curl_multi;
396 /* Handle to the GNS service */
397 static struct GNUNET_GNS_Handle *gns_handle;
399 /* DLL for ProxyCurlTasks */
400 static struct ProxyCurlTask *ctasks_head;
402 /* DLL for ProxyCurlTasks */
403 static struct ProxyCurlTask *ctasks_tail;
405 /* DLL for http daemons */
406 static struct MhdHttpList *mhd_httpd_head;
408 /* DLL for http daemons */
409 static struct MhdHttpList *mhd_httpd_tail;
411 /* Handle to the regex for dotplus (.+) replacement in HTML */
412 static regex_t re_dotplus;
414 /* The users local GNS zone hash */
415 static struct GNUNET_CRYPTO_ShortHashCode *local_gns_zone;
417 /* The users local private zone */
418 static struct GNUNET_CRYPTO_ShortHashCode *local_private_zone;
420 /* The users local shorten zone */
421 static struct GNUNET_CRYPTO_ShortHashCode *local_shorten_zone;
423 /* The CA for SSL certificate generation */
424 static struct ProxyCA proxy_ca;
426 /* UNIX domain socket for mhd */
427 struct GNUNET_NETWORK_Handle *mhd_unix_socket;
429 /* Shorten zone private key */
430 struct GNUNET_CRYPTO_RsaPrivateKey *shorten_zonekey;
433 * Checks if name is in tld
435 * @param name the name to check
436 * @param tld the TLD to check for
437 * @return GNUNET_YES or GNUNET_NO
440 is_tld(const char* name, const char* tld)
444 if (strlen(name) <= strlen(tld))
447 offset = strlen(name) - strlen(tld);
448 if (0 != strcmp (name+offset, tld))
450 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
451 "%s is not in .%s TLD\n", name, tld);
459 * convert integer to string representation
462 * @return the character
464 char i_to_hexchar (char i)
466 static char hexmap[] = "0123456789abcdef";
467 GNUNET_assert (sizeof (hexmap) > (i & 15));
468 return hexmap[i & 15];
472 * Escape giben 0-terminated string
474 * @param to_esc string to escapse
475 * @return allocated new escaped string (MUST free!)
478 escape_to_urlenc (const char *to_esc)
480 char *pos = (char*)to_esc;
481 char *res = GNUNET_malloc (strlen (to_esc) * 3 + 1);
486 if (isalnum (*pos) ||
487 ('-' == *pos) || ('_' == *pos) ||
488 ('.' == *pos) || ('~' == *pos))
490 else if (' ' == *pos)
495 *rpos++ = i_to_hexchar (*pos >> 4);
496 *rpos++ = i_to_hexchar (*pos >> 15);
505 con_post_data_iter (void *cls,
506 enum MHD_ValueKind kind,
508 const char *filename,
509 const char *content_type,
510 const char *transfer_encoding,
515 struct ProxyCurlTask* ctask = cls;
516 struct ProxyPostData* pdata;
519 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
520 "Got POST data: '%s : %s' at offset %llu size %lld\n",
521 key, data, off, size);
523 if (0 != strcasecmp (MHD_HTTP_POST_ENCODING_FORM_URLENCODED,
532 pdata = GNUNET_malloc (sizeof (struct ProxyPostData));
533 enc = escape_to_urlenc (key);
534 pdata->value = GNUNET_malloc (strlen (enc) + 3);
535 if (NULL != ctask->post_data_head)
537 pdata->value[0] = '&';
538 memcpy (pdata->value+1, enc, strlen (enc));
541 memcpy (pdata->value, enc, strlen (enc));
542 pdata->value[strlen (pdata->value)] = '=';
543 pdata->bytes_left = strlen (pdata->value);
544 pdata->total_bytes = pdata->bytes_left;
547 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
548 "Escaped POST key: '%s'\n",
551 GNUNET_CONTAINER_DLL_insert_tail (ctask->post_data_head,
552 ctask->post_data_tail,
557 pdata = GNUNET_malloc (sizeof (struct ProxyPostData));
558 enc = escape_to_urlenc (data);
559 pdata->value = GNUNET_malloc (strlen (enc) + 1);
560 memcpy (pdata->value, enc, strlen (enc));
561 pdata->bytes_left = strlen (pdata->value);
562 pdata->total_bytes = pdata->bytes_left;
565 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
566 "Escaped POST value: '%s'\n",
569 GNUNET_CONTAINER_DLL_insert_tail (ctask->post_data_head,
570 ctask->post_data_tail,
577 get_uri_val_iter (void *cls,
578 enum MHD_ValueKind kind,
584 if (strlen (buf) + strlen (value) + 3 > MAX_HTTP_URI_LENGTH)
586 sprintf (buf+strlen (buf), "?%s=%s", key, value);
592 * Read HTTP request header field 'Host'
594 * @param cls buffer to write to
595 * @param kind value kind
596 * @param key field key
597 * @param value field value
598 * @return MHD_NO when Host found
601 con_val_iter (void *cls,
602 enum MHD_ValueKind kind,
606 struct ProxyCurlTask *ctask = cls;
607 char* buf = ctask->host;
613 if (0 == strcmp ("Host", key))
615 port = strstr (value, ":");
618 strncpy (buf, value, port-value);
620 if ((1 != sscanf (port, "%u", &uport)) ||
621 (uport > UINT16_MAX) ||
623 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
624 "Unable to parse port!\n");
626 ctask->port = (uint16_t) uport;
633 if (0 == strcmp ("Accept-Encoding", key))
638 if (0 == strcmp (MHD_HTTP_HEADER_CONTENT_TYPE,
641 if (0 == strcmp (value,
642 MHD_HTTP_POST_ENCODING_FORM_URLENCODED))
643 ctask->post_type = MHD_HTTP_POST_ENCODING_FORM_URLENCODED;
644 else if (0 == strcmp (value,
645 MHD_HTTP_POST_ENCODING_MULTIPART_FORMDATA))
646 ctask->post_type = MHD_HTTP_POST_ENCODING_MULTIPART_FORMDATA;
648 ctask->post_type = NULL;
652 cstr = GNUNET_malloc (strlen (key) + strlen (hdr_val) + 3);
653 GNUNET_snprintf (cstr, strlen (key) + strlen (hdr_val) + 3,
654 "%s: %s", key, hdr_val);
656 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
657 "Client Header: %s\n", cstr);
659 ctask->headers = curl_slist_append (ctask->headers, cstr);
667 * Callback for MHD response
670 * @param pos in buffer
672 * @param max space in buffer
673 * @return number of bytes written
676 mhd_content_cb (void *cls,
682 * Check HTTP response header for mime
684 * @param buffer curl buffer
685 * @param size curl blocksize
686 * @param nmemb curl blocknumber
688 * @return size of read bytes
691 curl_check_hdr (void *buffer, size_t size, size_t nmemb, void *cls)
693 size_t bytes = size * nmemb;
694 struct ProxyCurlTask *ctask = cls;
695 int html_mime_len = strlen (HTML_HDR_CONTENT);
696 int cookie_hdr_len = strlen (MHD_HTTP_HEADER_SET_COOKIE);
697 char hdr_mime[html_mime_len+1];
698 char hdr_generic[bytes+1];
699 char new_cookie_hdr[bytes+strlen (ctask->leho)+1];
700 char new_location[MAX_HTTP_URI_LENGTH+500];
711 if (NULL == ctask->response)
713 /* FIXME: get total size from curl (if available) */
714 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
715 "Creating response for %s\n", ctask->url);
716 ctask->response = MHD_create_response_from_callback (MHD_SIZE_UNKNOWN,
717 sizeof (ctask->buffer),
721 ctask->ready_to_queue = GNUNET_YES;
725 if (html_mime_len <= bytes)
727 memcpy (hdr_mime, buffer, html_mime_len);
728 hdr_mime[html_mime_len] = '\0';
730 if (0 == strcmp (hdr_mime, HTML_HDR_CONTENT))
732 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
733 "Got HTML HTTP response header\n");
734 ctask->parse_content = GNUNET_YES;
738 if (cookie_hdr_len > bytes)
741 memcpy (hdr_generic, buffer, bytes);
742 hdr_generic[bytes] = '\0';
744 if ('\n' == hdr_generic[bytes-1])
745 hdr_generic[bytes-1] = '\0';
747 if (hdr_generic[bytes-2] == '\r')
748 hdr_generic[bytes-2] = '\0';
750 if (0 == memcmp (hdr_generic,
751 MHD_HTTP_HEADER_SET_COOKIE,
754 ndup = GNUNET_strdup (hdr_generic+cookie_hdr_len+1);
755 memset (new_cookie_hdr, 0, sizeof (new_cookie_hdr));
756 tok = strtok (ndup, ";");
758 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
759 "Looking for cookie in : %s\n", hdr_generic);
761 for (; tok != NULL; tok = strtok (NULL, ";"))
763 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
764 "Got Cookie token: %s\n", tok);
765 //memcpy (new_cookie_hdr+offset, tok, strlen (tok));
766 if (0 == memcmp (tok, " domain", strlen (" domain")))
768 cookie_domain = tok + strlen (" domain") + 1;
770 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
771 "Got Set-Cookie Domain: %s\n", cookie_domain);
773 if (strlen (cookie_domain) < strlen (ctask->leho))
775 delta_cdomain = strlen (ctask->leho) - strlen (cookie_domain);
776 if (0 == strcmp (cookie_domain, ctask->leho + (delta_cdomain)))
778 GNUNET_snprintf (new_cookie_hdr+offset,
779 sizeof (new_cookie_hdr),
780 " domain=%s", ctask->authority);
781 offset += strlen (" domain=") + strlen (ctask->authority);
782 new_cookie_hdr[offset] = ';';
787 else if (strlen (cookie_domain) == strlen (ctask->leho))
789 if (0 == strcmp (cookie_domain, ctask->leho))
791 GNUNET_snprintf (new_cookie_hdr+offset,
792 sizeof (new_cookie_hdr),
793 " domain=%s", ctask->host);
794 offset += strlen (" domain=") + strlen (ctask->host);
795 new_cookie_hdr[offset] = ';';
800 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
801 "Cookie domain invalid\n");
805 memcpy (new_cookie_hdr+offset, tok, strlen (tok));
806 offset += strlen (tok);
807 new_cookie_hdr[offset] = ';';
813 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
814 "Got Set-Cookie HTTP header %s\n", new_cookie_hdr);
816 if (GNUNET_NO == MHD_add_response_header (ctask->response,
817 MHD_HTTP_HEADER_SET_COOKIE,
820 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
821 "MHD: Error adding set-cookie header field %s\n",
822 hdr_generic+cookie_hdr_len+1);
827 ndup = GNUNET_strdup (hdr_generic);
828 hdr_type = strtok (ndup, ":");
830 if (NULL == hdr_type)
836 hdr_val = strtok (NULL, "");
846 if (0 == strcasecmp (MHD_HTTP_HEADER_LOCATION, hdr_type))
848 if (ctask->mhd->is_ssl)
850 sprintf (leho_host, "https://%s", ctask->leho);
851 sprintf (real_host, "https://%s", ctask->host);
855 sprintf (leho_host, "http://%s", ctask->leho);
856 sprintf (real_host, "http://%s", ctask->host);
859 if (0 == memcmp (leho_host, hdr_val, strlen (leho_host)))
861 sprintf (new_location, "%s%s", real_host, hdr_val+strlen (leho_host));
862 hdr_val = new_location;
866 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
867 "Trying to set %s: %s\n",
870 if (GNUNET_NO == MHD_add_response_header (ctask->response,
874 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
875 "MHD: Error adding %s header field %s\n",
886 * @param hd a http daemon list entry
889 run_httpd (struct MhdHttpList *hd);
900 * Task run whenever HTTP server operations are pending.
903 * @param tc sched context
907 const struct GNUNET_SCHEDULER_TaskContext *tc);
910 run_mhd_now (struct MhdHttpList *hd)
912 if (GNUNET_SCHEDULER_NO_TASK != hd->httpd_task)
914 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
915 "MHD: killing old task\n");
916 GNUNET_SCHEDULER_cancel (hd->httpd_task);
918 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
919 "MHD: Scheduling MHD now\n");
920 hd->httpd_task = GNUNET_SCHEDULER_add_now (&do_httpd, hd);
924 * Ask cURL for the select sets and schedule download
927 curl_download_prepare ();
930 * Callback to free content
932 * @param cls content to free
933 * @param tc task context
936 mhd_content_free (void *cls,
937 const struct GNUNET_SCHEDULER_TaskContext *tc)
939 struct ProxyCurlTask *ctask = cls;
940 GNUNET_assert (NULL == ctask->pp_match_head);
942 if (NULL != ctask->headers)
943 curl_slist_free_all (ctask->headers);
945 if (NULL != ctask->headers)
946 curl_slist_free_all (ctask->resolver);
948 if (NULL != ctask->response)
949 MHD_destroy_response (ctask->response);
951 if (NULL != ctask->post_handler)
952 MHD_destroy_post_processor (ctask->post_handler);
960 * Callback for MHD response
963 * @param pos in buffer
965 * @param max space in buffer
966 * @return number of bytes written
969 mhd_content_cb (void *cls,
974 struct ProxyCurlTask *ctask = cls;
975 struct ProxyREMatch *re_match = ctask->pp_match_head;
977 long long int bytes_to_copy = ctask->buffer_write_ptr - ctask->buffer_read_ptr;
979 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
980 "MHD: content cb for %s. To copy: %lld\n",
981 ctask->url, bytes_to_copy);
982 GNUNET_assert (bytes_to_copy >= 0);
984 if ((GNUNET_YES == ctask->download_is_finished) &&
985 (GNUNET_NO == ctask->download_error) &&
986 (0 == bytes_to_copy)) /* &&
987 (BUF_WAIT_FOR_CURL == ctask->buf_status))*/
989 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
990 "MHD: sending response for %s\n", ctask->url);
991 ctask->download_in_progress = GNUNET_NO;
992 run_mhd_now (ctask->mhd);
993 GNUNET_SCHEDULER_add_now (&mhd_content_free, ctask);
994 total_mhd_connections--;
995 return MHD_CONTENT_READER_END_OF_STREAM;
998 if ((GNUNET_YES == ctask->download_error) &&
999 (GNUNET_YES == ctask->download_is_finished) &&
1000 (0 == bytes_to_copy)) /* &&
1001 (BUF_WAIT_FOR_CURL == ctask->buf_status))*/
1003 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
1004 "MHD: sending error response\n");
1005 ctask->download_in_progress = GNUNET_NO;
1006 run_mhd_now (ctask->mhd);
1007 GNUNET_SCHEDULER_add_now (&mhd_content_free, ctask);
1008 total_mhd_connections--;
1009 return MHD_CONTENT_READER_END_WITH_ERROR;
1012 if ( ctask->buf_status == BUF_WAIT_FOR_CURL )
1016 for (; NULL != re_match; re_match = ctask->pp_match_head)
1018 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1019 "MHD: Processing PP %s\n",
1020 re_match->hostname);
1021 bytes_to_copy = re_match->start - ctask->buffer_read_ptr;
1022 GNUNET_assert (bytes_to_copy >= 0);
1024 if (bytes_to_copy+copied > max)
1026 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1027 "MHD: buffer in response too small for %d. Using available space (%d). (%s)\n",
1031 memcpy (buf+copied, ctask->buffer_read_ptr, max-copied);
1032 ctask->buffer_read_ptr += max-copied;
1034 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1035 "MHD: copied %d bytes\n", copied);
1039 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1040 "MHD: copying %d bytes to mhd response at offset %d\n",
1041 bytes_to_copy, ctask->buffer_read_ptr);
1042 memcpy (buf+copied, ctask->buffer_read_ptr, bytes_to_copy);
1043 copied += bytes_to_copy;
1045 if (GNUNET_NO == re_match->done)
1047 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1048 "MHD: Waiting for PP of %s\n", re_match->hostname);
1049 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1050 "MHD: copied %d bytes\n", copied);
1051 ctask->buffer_read_ptr += bytes_to_copy;
1055 if (strlen (re_match->result) > (max - copied))
1057 //FIXME partially copy domain here
1058 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1059 "MHD: buffer in response too small for %s! (%s)\n",
1062 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1063 "MHD: copied %d bytes\n", copied);
1064 ctask->buffer_read_ptr += bytes_to_copy;
1068 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1069 "MHD: Adding PP result %s to buffer\n",
1071 memcpy (buf+copied, re_match->result, strlen (re_match->result));
1072 copied += strlen (re_match->result);
1073 ctask->buffer_read_ptr = re_match->end;
1074 GNUNET_CONTAINER_DLL_remove (ctask->pp_match_head,
1075 ctask->pp_match_tail,
1077 GNUNET_free (re_match);
1080 bytes_to_copy = ctask->buffer_write_ptr - ctask->buffer_read_ptr;
1082 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1083 "MHD: copied: %d left: %d, space left in buf: %d\n",
1085 bytes_to_copy, max-copied);
1087 GNUNET_assert (0 <= bytes_to_copy);
1089 if (GNUNET_NO == ctask->download_is_finished)
1091 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1092 "MHD: Purging buffer\n");
1093 memmove (ctask->buffer, ctask->buffer_read_ptr, bytes_to_copy);
1094 ctask->buffer_read_ptr = ctask->buffer;
1095 ctask->buffer_write_ptr = ctask->buffer + bytes_to_copy;
1096 ctask->buffer[bytes_to_copy] = '\0';
1099 if (bytes_to_copy+copied > max)
1100 bytes_to_copy = max-copied;
1102 if (0 > bytes_to_copy)
1105 memcpy (buf+copied, ctask->buffer_read_ptr, bytes_to_copy);
1106 ctask->buffer_read_ptr += bytes_to_copy;
1107 copied += bytes_to_copy;
1108 ctask->buf_status = BUF_WAIT_FOR_CURL;
1110 if (NULL != ctask->curl)
1111 curl_easy_pause (ctask->curl, CURLPAUSE_CONT);
1113 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1114 "MHD: copied %d bytes\n", copied);
1115 run_mhd_now (ctask->mhd);
1120 * Shorten result callback
1122 * @param cls the proxycurltask
1123 * @param short_name the shortened name (NULL on error)
1126 process_shorten (void* cls, const char* short_name)
1128 struct ProxyREMatch *re_match = cls;
1129 char result[sizeof (re_match->result)];
1131 if (NULL == short_name)
1133 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1134 "PP: Unable to shorten %s\n",
1135 re_match->hostname);
1136 GNUNET_CONTAINER_DLL_remove (re_match->ctask->pp_match_head,
1137 re_match->ctask->pp_match_tail,
1139 GNUNET_free (re_match);
1143 if (0 == strcmp (short_name, re_match->ctask->leho))
1144 strcpy (result, re_match->ctask->host);
1146 strcpy (result, short_name);
1148 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1149 "PP: Shorten %s -> %s\n",
1153 if (re_match->ctask->mhd->is_ssl)
1154 sprintf (re_match->result, "href=\"https://%s", result);
1156 sprintf (re_match->result, "href=\"http://%s", result);
1158 re_match->done = GNUNET_YES;
1159 run_mhd_now (re_match->ctask->mhd);
1164 * Postprocess data in buffer. From read ptr to write ptr
1166 * @param cls the curlproxytask
1167 * @param tc task context
1170 postprocess_buffer (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
1172 struct ProxyCurlTask *ctask = cls;
1173 struct ProxyREMatch *re_match;
1174 char* re_ptr = ctask->buffer_read_ptr;
1175 char re_hostname[255];
1176 regmatch_t m[RE_N_MATCHES];
1178 ctask->pp_task = GNUNET_SCHEDULER_NO_TASK;
1180 if (GNUNET_YES != ctask->parse_content)
1182 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1183 "PP: Not parsing content\n");
1184 ctask->buf_status = BUF_WAIT_FOR_MHD;
1185 run_mhd_now (ctask->mhd);
1189 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1190 "PP: We need to parse the HTML\n");
1192 /* 0 means match found */
1193 while (0 == regexec (&re_dotplus, re_ptr, RE_N_MATCHES, m, 0))
1195 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1196 "PP: regex match\n");
1198 GNUNET_assert (m[1].rm_so != -1);
1200 memset (re_hostname, 0, sizeof (re_hostname));
1201 memcpy (re_hostname, re_ptr+m[1].rm_so, (m[3].rm_eo-m[1].rm_so));
1203 re_match = GNUNET_malloc (sizeof (struct ProxyREMatch));
1204 re_match->start = re_ptr + m[0].rm_so;
1205 re_match->end = re_ptr + m[3].rm_eo;
1206 re_match->done = GNUNET_NO;
1207 re_match->ctask = ctask;
1208 strcpy (re_match->hostname, re_hostname);
1209 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1210 "PP: Got hostname %s\n", re_hostname);
1211 re_ptr += m[3].rm_eo;
1213 if (GNUNET_YES == is_tld (re_match->hostname, GNUNET_GNS_TLD_PLUS))
1215 re_match->hostname[strlen(re_match->hostname)-1] = '\0';
1216 strcpy (re_match->hostname+strlen(re_match->hostname),
1220 re_match->shorten_task = GNUNET_GNS_shorten_zone (gns_handle,
1226 re_match); //FIXME cancel appropriately
1228 GNUNET_CONTAINER_DLL_insert_tail (ctask->pp_match_head,
1229 ctask->pp_match_tail,
1233 ctask->buf_status = BUF_WAIT_FOR_MHD;
1234 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1235 "PP: No more matches\n");
1236 run_mhd_now (ctask->mhd);
1240 * Handle data from cURL
1242 * @param ptr pointer to the data
1243 * @param size number of blocks of data
1244 * @param nmemb blocksize
1245 * @param ctx the curlproxytask
1246 * @return number of bytes handled
1249 curl_download_cb (void *ptr, size_t size, size_t nmemb, void* ctx)
1251 const char *cbuf = ptr;
1252 size_t total = size * nmemb;
1253 struct ProxyCurlTask *ctask = ctx;
1254 size_t buf_space = sizeof (ctask->buffer) -
1255 (ctask->buffer_write_ptr-ctask->buffer);
1257 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1258 "CURL: Got %d. %d free in buffer\n",
1261 if (BUF_WAIT_FOR_CURL != ctask->buf_status)
1262 return CURL_WRITEFUNC_PAUSE;
1264 if (total > (buf_space - CURL_BUF_PADDING))
1266 if (ctask->buf_status == BUF_WAIT_FOR_CURL)
1268 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1269 "CURL: Buffer full starting postprocessing\n");
1270 ctask->buf_status = BUF_WAIT_FOR_PP;
1271 ctask->pp_task = GNUNET_SCHEDULER_add_now (&postprocess_buffer,
1273 return CURL_WRITEFUNC_PAUSE;
1276 /* we should not get called in that case */
1277 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1278 "CURL: called out of context and no space in buffer!\n");
1279 return CURL_WRITEFUNC_PAUSE;
1282 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1283 "CURL: Copying %d bytes to buffer (%s)\n", total, ctask->url);
1284 memcpy (ctask->buffer_write_ptr, cbuf, total);
1285 ctask->bytes_in_buffer += total;
1286 ctask->buffer_write_ptr += total;
1287 ctask->buffer_write_ptr[0] = '\0';
1293 * cURL callback for post data
1296 read_callback (void *buf, size_t size, size_t nmemb, void *cls)
1298 struct ProxyCurlTask *ctask = cls;
1299 struct ProxyPostData *pdata = ctask->post_data_head;
1300 size_t len = size * nmemb;
1304 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1305 "CURL: read callback\n");
1311 if (NULL == pdata->value)
1313 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1314 "CURL: Terminating POST data\n");
1316 GNUNET_CONTAINER_DLL_remove (ctask->post_data_head,
1317 ctask->post_data_tail,
1319 GNUNET_free (pdata);
1323 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1324 "CURL: read callback value %s\n", pdata->value);
1326 to_copy = pdata->bytes_left;
1330 pos = pdata->value + (pdata->total_bytes - pdata->bytes_left);
1331 memcpy (buf, pos, to_copy);
1332 pdata->bytes_left -= to_copy;
1333 if (pdata->bytes_left <= 0)
1335 GNUNET_free (pdata->value);
1336 GNUNET_CONTAINER_DLL_remove (ctask->post_data_head,
1337 ctask->post_data_tail,
1339 GNUNET_free (pdata);
1345 * Task that is run when we are ready to receive more data
1348 * @param cls closure
1349 * @param tc task context
1352 curl_task_download (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
1355 * Ask cURL for the select sets and schedule download
1358 curl_download_prepare ()
1365 struct GNUNET_NETWORK_FDSet *grs;
1366 struct GNUNET_NETWORK_FDSet *gws;
1368 struct GNUNET_TIME_Relative rtime;
1374 mret = curl_multi_fdset (curl_multi, &rs, &ws, &es, &max);
1376 if (mret != CURLM_OK)
1378 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1379 "%s failed at %s:%d: `%s'\n",
1380 "curl_multi_fdset", __FILE__, __LINE__,
1381 curl_multi_strerror (mret));
1382 //TODO cleanup here?
1386 mret = curl_multi_timeout (curl_multi, &to);
1387 rtime = GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MILLISECONDS, to);
1389 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1390 "cURL multi fds: max=%d timeout=%llu\n", max, to);
1392 grs = GNUNET_NETWORK_fdset_create ();
1393 gws = GNUNET_NETWORK_fdset_create ();
1394 GNUNET_NETWORK_fdset_copy_native (grs, &rs, max + 1);
1395 GNUNET_NETWORK_fdset_copy_native (gws, &ws, max + 1);
1396 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1397 "Scheduling task cURL\n");
1399 if (curl_download_task != GNUNET_SCHEDULER_NO_TASK)
1400 GNUNET_SCHEDULER_cancel (curl_download_task);
1404 curl_download_task =
1405 GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT,
1408 &curl_task_download, curl_multi);
1410 else if (NULL != ctasks_head)
1412 /* as specified in curl docs */
1413 curl_download_task = GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_MILLISECONDS,
1414 &curl_task_download,
1417 GNUNET_NETWORK_fdset_destroy (gws);
1418 GNUNET_NETWORK_fdset_destroy (grs);
1424 * Task that is run when we are ready to receive more data
1427 * @param cls closure
1428 * @param tc task context
1431 curl_task_download (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
1435 struct CURLMsg *msg;
1437 struct ProxyCurlTask *ctask;
1441 struct ProxyCurlTask *clean_head = NULL;
1442 struct ProxyCurlTask *clean_tail = NULL;
1444 curl_download_task = GNUNET_SCHEDULER_NO_TASK;
1446 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
1448 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1449 "Shutdown requested while trying to download\n");
1453 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1461 mret = curl_multi_perform (curl_multi, &running);
1463 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1464 "Running curl tasks: %d\n", running);
1466 ctask = ctasks_head;
1467 for (; ctask != NULL; ctask = ctask->next)
1469 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1470 "CTask: %s\n", ctask->url);
1474 if (num_ctasks != running)
1476 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1477 "%d ctasks, %d curl running\n", num_ctasks, running);
1482 ctask = ctasks_head;
1483 msg = curl_multi_info_read (curl_multi, &msgnum);
1484 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1485 "Messages left: %d\n", msgnum);
1492 if ((msg->data.result != CURLE_OK) &&
1493 (msg->data.result != CURLE_GOT_NOTHING))
1495 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1496 "Download curl failed");
1498 for (; ctask != NULL; ctask = ctask->next)
1500 if (NULL == ctask->curl)
1503 if (memcmp (msg->easy_handle, ctask->curl, sizeof (CURL)) != 0)
1506 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1507 "CURL: Download failed for task %s: %s.\n",
1509 curl_easy_strerror (msg->data.result));
1510 ctask->download_is_finished = GNUNET_YES;
1511 ctask->download_error = GNUNET_YES;
1512 if (CURLE_OK == curl_easy_getinfo (ctask->curl,
1513 CURLINFO_RESPONSE_CODE,
1515 ctask->curl_response_code = resp_code;
1516 ctask->ready_to_queue = MHD_YES;
1517 ctask->buf_status = BUF_WAIT_FOR_MHD;
1518 run_mhd_now (ctask->mhd);
1520 GNUNET_CONTAINER_DLL_remove (ctasks_head, ctasks_tail,
1522 GNUNET_CONTAINER_DLL_insert (clean_head, clean_tail, ctask);
1525 GNUNET_assert (ctask != NULL);
1529 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1530 "CURL: download completed.\n");
1532 for (; ctask != NULL; ctask = ctask->next)
1534 if (NULL == ctask->curl)
1537 if (0 != memcmp (msg->easy_handle, ctask->curl, sizeof (CURL)))
1540 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1541 "CURL: completed task %s found.\n", ctask->url);
1542 if (CURLE_OK == curl_easy_getinfo (ctask->curl,
1543 CURLINFO_RESPONSE_CODE,
1545 ctask->curl_response_code = resp_code;
1548 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1549 "CURL: Completed ctask!\n");
1550 if (GNUNET_SCHEDULER_NO_TASK == ctask->pp_task)
1552 ctask->buf_status = BUF_WAIT_FOR_PP;
1553 ctask->pp_task = GNUNET_SCHEDULER_add_now (&postprocess_buffer,
1557 ctask->ready_to_queue = MHD_YES;
1558 ctask->download_is_finished = GNUNET_YES;
1560 /* We MUST not modify the multi handle else we loose messages */
1561 GNUNET_CONTAINER_DLL_remove (ctasks_head, ctasks_tail,
1563 GNUNET_CONTAINER_DLL_insert (clean_head, clean_tail, ctask);
1567 GNUNET_assert (ctask != NULL);
1569 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1570 "CURL: %s\n", curl_easy_strerror(msg->data.result));
1576 } while (msgnum > 0);
1578 for (ctask=clean_head; ctask != NULL; ctask = ctask->next)
1580 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1581 "CURL: Removing task %s.\n", ctask->url);
1582 curl_multi_remove_handle (curl_multi, ctask->curl);
1583 curl_easy_cleanup (ctask->curl);
1588 for (ctask=ctasks_head; ctask != NULL; ctask = ctask->next)
1593 if (num_ctasks != running)
1595 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1596 "CURL: %d tasks, %d running\n", num_ctasks, running);
1599 GNUNET_assert ( num_ctasks == running );
1601 } while (mret == CURLM_CALL_MULTI_PERFORM);
1603 if (mret != CURLM_OK)
1605 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "CURL: %s failed at %s:%d: `%s'\n",
1606 "curl_multi_perform", __FILE__, __LINE__,
1607 curl_multi_strerror (mret));
1609 curl_download_prepare();
1613 * Process LEHO lookup
1615 * @param cls the ctask
1616 * @param rd_count number of records returned
1617 * @param rd record data
1620 process_leho_lookup (void *cls,
1622 const struct GNUNET_NAMESTORE_RecordData *rd)
1624 struct ProxyCurlTask *ctask = cls;
1625 char hosthdr[262]; //256 + "Host: "
1629 struct hostent *phost;
1631 char resolvename[512];
1634 strcpy (ctask->leho, "");
1637 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1638 "No LEHO present!\n");
1640 for (i=0; i<rd_count; i++)
1642 if (rd[i].record_type != GNUNET_GNS_RECORD_LEHO)
1645 memcpy (ctask->leho, rd[i].data, rd[i].data_size);
1647 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1648 "Found LEHO %s for %s\n", ctask->leho, ctask->url);
1651 if (0 != strcmp (ctask->leho, ""))
1653 sprintf (hosthdr, "%s%s:%d", "Host: ", ctask->leho, ctask->port);
1654 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1655 "New HTTP header value: %s\n", hosthdr);
1656 ctask->headers = curl_slist_append (ctask->headers, hosthdr);
1657 GNUNET_assert (NULL != ctask->headers);
1658 ret = curl_easy_setopt (ctask->curl, CURLOPT_HTTPHEADER, ctask->headers);
1659 if (CURLE_OK != ret)
1661 GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "%s failed at %s:%d: `%s'\n",
1662 "curl_easy_setopt", __FILE__, __LINE__, curl_easy_strerror(ret));
1667 if (ctask->mhd->is_ssl)
1669 phost = (struct hostent*)gethostbyname (ctask->host);
1673 ssl_ip = inet_ntoa(*((struct in_addr*)(phost->h_addr)));
1674 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1675 "SSL target server: %s\n", ssl_ip);
1676 sprintf (resolvename, "%s:%d:%s", ctask->leho, HTTPS_PORT, ssl_ip);
1677 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1678 "Curl resolve: %s\n", resolvename);
1679 ctask->resolver = curl_slist_append ( ctask->resolver, resolvename);
1680 curl_easy_setopt (ctask->curl, CURLOPT_RESOLVE, ctask->resolver);
1681 sprintf (curlurl, "https://%s:%d%s", ctask->leho, ctask->port, ctask->url);
1682 curl_easy_setopt (ctask->curl, CURLOPT_URL, curlurl);
1686 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1687 "gethostbyname failed for %s!\n", ctask->host);
1688 ctask->download_is_finished = GNUNET_YES;
1689 ctask->download_error = GNUNET_YES;
1694 if (CURLM_OK != (mret=curl_multi_add_handle (curl_multi, ctask->curl)))
1696 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1697 "%s failed at %s:%d: `%s'\n",
1698 "curl_multi_add_handle", __FILE__, __LINE__,
1699 curl_multi_strerror (mret));
1700 ctask->download_is_finished = GNUNET_YES;
1701 ctask->download_error = GNUNET_YES;
1704 GNUNET_CONTAINER_DLL_insert (ctasks_head, ctasks_tail, ctask);
1706 curl_download_prepare ();
1711 * Initialize download and trigger curl
1713 * @param cls the proxycurltask
1714 * @param auth_name the name of the authority (site of origin) of ctask->host
1718 process_get_authority (void *cls,
1719 const char* auth_name)
1721 struct ProxyCurlTask *ctask = cls;
1723 if (NULL == auth_name)
1725 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1726 "Get authority failed!\n");
1727 strcpy (ctask->authority, "");
1731 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1732 "Get authority yielded %s\n", auth_name);
1733 strcpy (ctask->authority, auth_name);
1736 GNUNET_GNS_lookup_zone (gns_handle,
1739 GNUNET_GNS_RECORD_LEHO,
1740 GNUNET_YES, //Only cached for performance
1742 &process_leho_lookup,
1748 * Main MHD callback for handling requests.
1751 * @param con MHD connection handle
1752 * @param url the url in the request
1753 * @param meth the HTTP method used ("GET", "PUT", etc.)
1754 * @param ver the HTTP version string (i.e. "HTTP/1.1")
1755 * @param upload_data the data being uploaded (excluding HEADERS,
1756 * for a POST that fits into memory and that is encoded
1757 * with a supported encoding, the POST data will NOT be
1758 * given in upload_data and is instead available as
1759 * part of MHD_get_connection_values; very large POST
1760 * data *will* be made available incrementally in
1762 * @param upload_data_size set initially to the size of the
1763 * upload_data provided; the method must update this
1764 * value to the number of bytes NOT processed;
1765 * @param con_cls pointer to location where we store the 'struct Request'
1766 * @return MHD_YES if the connection was handled successfully,
1767 * MHD_NO if the socket must be closed due to a serious
1768 * error while handling the request
1771 create_response (void *cls,
1772 struct MHD_Connection *con,
1776 const char *upload_data,
1777 size_t *upload_data_size,
1780 struct MhdHttpList* hd = cls;
1781 const char* page = "<html><head><title>gnoxy</title>"\
1782 "</head><body>cURL fail</body></html>";
1784 char curlurl[MAX_HTTP_URI_LENGTH]; // buffer overflow!
1787 struct ProxyCurlTask *ctask;
1788 struct ProxyPostData *fin_post;
1791 if ((0 != strcasecmp (meth, MHD_HTTP_METHOD_GET)) &&
1792 (0 != strcasecmp (meth, MHD_HTTP_METHOD_PUT)) &&
1793 (0 != strcasecmp (meth, MHD_HTTP_METHOD_POST)))
1795 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1796 "MHD: %s NOT IMPLEMENTED!\n", meth);
1801 if (NULL == *con_cls)
1804 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
1805 "Got %s request for %s\n", meth, url);
1806 ctask = GNUNET_malloc (sizeof (struct ProxyCurlTask));
1810 ctask->curl = curl_easy_init();
1811 if (NULL == ctask->curl)
1813 ctask->response = MHD_create_response_from_buffer (strlen (page),
1815 MHD_RESPMEM_PERSISTENT);
1816 ret = MHD_queue_response (con,
1819 MHD_destroy_response (ctask->response);
1820 GNUNET_free (ctask);
1824 ctask->download_in_progress = GNUNET_YES;
1825 ctask->buf_status = BUF_WAIT_FOR_CURL;
1826 ctask->connection = con;
1827 ctask->curl_response_code = MHD_HTTP_OK;
1828 ctask->buffer_read_ptr = ctask->buffer;
1829 ctask->buffer_write_ptr = ctask->buffer;
1830 ctask->pp_task = GNUNET_SCHEDULER_NO_TASK;
1831 if (ctask->mhd->is_ssl)
1832 ctask->port = HTTPS_PORT;
1834 ctask->port = HTTP_PORT;
1836 MHD_get_connection_values (con,
1838 &con_val_iter, ctask);
1840 if (0 == strcasecmp (meth, MHD_HTTP_METHOD_PUT))
1842 if (0 == *upload_data_size)
1844 curl_easy_cleanup (ctask->curl);
1845 GNUNET_free (ctask);
1848 ctask->put_read_offset = 0;
1849 ctask->put_read_size = *upload_data_size;
1850 curl_easy_setopt (ctask->curl, CURLOPT_UPLOAD, 1);
1851 curl_easy_setopt (ctask->curl, CURLOPT_READDATA, upload_data);
1852 //curl_easy_setopt (ctask->curl, CURLOPT_READFUNCTION, &curl_read_cb);
1854 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
1855 "Got PUT data: %s\n", upload_data);
1856 curl_easy_cleanup (ctask->curl);
1857 GNUNET_free (ctask);
1861 if (0 == strcasecmp (meth, MHD_HTTP_METHOD_POST))
1863 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
1864 "Setting up POST processor\n");
1865 ctask->post_handler = MHD_create_post_processor (con,
1867 &con_post_data_iter,
1869 curl_easy_setopt (ctask->curl, CURLOPT_POST, 1);
1870 curl_easy_setopt (ctask->curl, CURLOPT_READFUNCTION,
1872 curl_easy_setopt (ctask->curl, CURLOPT_READDATA, ctask);
1873 ctask->headers = curl_slist_append (ctask->headers,
1874 "Transfer-Encoding: chunked");
1875 /*curl_easy_setopt (ctask->curl, CURLOPT_POST, 1);
1876 curl_easy_setopt (ctask->curl, CURLOPT_POSTFIELDSIZE, *upload_data_size);
1877 curl_easy_setopt (ctask->curl, CURLOPT_COPYPOSTFIELDS, upload_data);
1879 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
1880 "Got POST data: %s\n", upload_data);
1881 curl_easy_cleanup (ctask->curl);
1882 GNUNET_free (ctask);
1886 curl_easy_setopt (ctask->curl, CURLOPT_HEADERFUNCTION, &curl_check_hdr);
1887 curl_easy_setopt (ctask->curl, CURLOPT_HEADERDATA, ctask);
1888 curl_easy_setopt (ctask->curl, CURLOPT_WRITEFUNCTION, &curl_download_cb);
1889 curl_easy_setopt (ctask->curl, CURLOPT_WRITEDATA, ctask);
1890 curl_easy_setopt (ctask->curl, CURLOPT_FOLLOWLOCATION, 0);
1891 curl_easy_setopt (ctask->curl, CURLOPT_IPRESOLVE, CURL_IPRESOLVE_V4);
1893 if (GNUNET_NO == ctask->mhd->is_ssl)
1895 sprintf (curlurl, "http://%s:%d%s", ctask->host, ctask->port, url);
1896 MHD_get_connection_values (con,
1897 MHD_GET_ARGUMENT_KIND,
1898 &get_uri_val_iter, curlurl);
1899 curl_easy_setopt (ctask->curl, CURLOPT_URL, curlurl);
1901 strcpy (ctask->url, url);
1902 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1903 "MHD: Adding new curl task for %s%s\n", ctask->host, url);
1904 MHD_get_connection_values (con,
1905 MHD_GET_ARGUMENT_KIND,
1906 &get_uri_val_iter, ctask->url);
1908 curl_easy_setopt (ctask->curl, CURLOPT_FAILONERROR, 1);
1909 curl_easy_setopt (ctask->curl, CURLOPT_CONNECTTIMEOUT, 600L);
1910 curl_easy_setopt (ctask->curl, CURLOPT_TIMEOUT, 600L);
1912 GNUNET_GNS_get_authority (gns_handle,
1914 &process_get_authority,
1916 ctask->ready_to_queue = GNUNET_NO;
1917 ctask->fin = GNUNET_NO;
1921 ctask = (struct ProxyCurlTask *) *con_cls;
1922 if (0 == strcasecmp (meth, MHD_HTTP_METHOD_POST))
1924 if (0 != *upload_data_size)
1926 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
1927 "Invoking POST processor\n");
1928 MHD_post_process (ctask->post_handler,
1929 upload_data, *upload_data_size);
1930 *upload_data_size = 0;
1933 else if (GNUNET_NO == ctask->post_done)
1935 fin_post = GNUNET_malloc (sizeof (struct ProxyPostData));
1936 GNUNET_CONTAINER_DLL_insert_tail (ctask->post_data_head,
1937 ctask->post_data_tail,
1939 ctask->post_done = GNUNET_YES;
1944 if (GNUNET_YES != ctask->ready_to_queue)
1945 return MHD_YES; /* wait longer */
1947 if (GNUNET_YES == ctask->fin)
1950 ctask->fin = GNUNET_YES;
1951 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1952 "MHD: Queueing response for %s\n", ctask->url);
1953 ret = MHD_queue_response (con, ctask->curl_response_code, ctask->response);
1954 run_mhd_now (ctask->mhd);
1965 struct MhdHttpList *hd;
1967 for (hd=mhd_httpd_head; NULL != hd; hd = hd->next)
1975 * @param hd the daemon to run
1978 run_httpd (struct MhdHttpList *hd)
1983 struct GNUNET_NETWORK_FDSet *wrs;
1984 struct GNUNET_NETWORK_FDSet *wws;
1985 struct GNUNET_NETWORK_FDSet *wes;
1988 unsigned MHD_LONG_LONG timeout;
1989 struct GNUNET_TIME_Relative tv;
1994 wrs = GNUNET_NETWORK_fdset_create ();
1995 wes = GNUNET_NETWORK_fdset_create ();
1996 wws = GNUNET_NETWORK_fdset_create ();
1998 GNUNET_assert (MHD_YES == MHD_get_fdset (hd->daemon, &rs, &ws, &es, &max));
2001 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2002 "MHD fds: max=%d\n", max);
2004 haveto = MHD_get_timeout (hd->daemon, &timeout);
2006 if (MHD_YES == haveto)
2007 tv.rel_value = (uint64_t) timeout;
2009 tv = GNUNET_TIME_UNIT_FOREVER_REL;
2010 GNUNET_NETWORK_fdset_copy_native (wrs, &rs, max + 1);
2011 GNUNET_NETWORK_fdset_copy_native (wws, &ws, max + 1);
2012 GNUNET_NETWORK_fdset_copy_native (wes, &es, max + 1);
2014 if (GNUNET_SCHEDULER_NO_TASK != hd->httpd_task)
2015 GNUNET_SCHEDULER_cancel (hd->httpd_task);
2017 GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_HIGH,
2020 GNUNET_NETWORK_fdset_destroy (wrs);
2021 GNUNET_NETWORK_fdset_destroy (wws);
2022 GNUNET_NETWORK_fdset_destroy (wes);
2027 * Task run whenever HTTP server operations are pending.
2030 * @param tc sched context
2033 do_httpd (void *cls,
2034 const struct GNUNET_SCHEDULER_TaskContext *tc)
2036 struct MhdHttpList *hd = cls;
2038 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2039 "MHD: Main loop\n");
2040 hd->httpd_task = GNUNET_SCHEDULER_NO_TASK;
2041 MHD_run (hd->daemon);
2048 * Read data from socket
2050 * @param cls the closure
2051 * @param tc scheduler context
2054 do_read (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
2057 * Read from remote end
2059 * @param cls closure
2060 * @param tc scheduler context
2063 do_read_remote (void* cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
2066 * Write data to remote socket
2068 * @param cls the closure
2069 * @param tc scheduler context
2072 do_write_remote (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
2074 struct Socks5Request *s5r = cls;
2077 s5r->fwdwtask = GNUNET_SCHEDULER_NO_TASK;
2079 if ((NULL != tc->read_ready) &&
2080 (GNUNET_NETWORK_fdset_isset (tc->write_ready, s5r->remote_sock)) &&
2081 ((len = GNUNET_NETWORK_socket_send (s5r->remote_sock, s5r->rbuf,
2084 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2085 "Successfully sent %d bytes to remote socket\n",
2090 GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING, "write remote");
2091 if (GNUNET_SCHEDULER_NO_TASK != s5r->rtask)
2092 GNUNET_SCHEDULER_cancel (s5r->rtask);
2093 if (GNUNET_SCHEDULER_NO_TASK != s5r->wtask)
2094 GNUNET_SCHEDULER_cancel (s5r->wtask);
2095 if (GNUNET_SCHEDULER_NO_TASK != s5r->fwdrtask)
2096 GNUNET_SCHEDULER_cancel (s5r->fwdrtask);
2097 GNUNET_NETWORK_socket_close (s5r->remote_sock);
2098 GNUNET_NETWORK_socket_close (s5r->sock);
2104 GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL,
2111 * Clean up s5r handles
2113 * @param s5r the handle to destroy
2116 cleanup_s5r (struct Socks5Request *s5r)
2118 if (GNUNET_SCHEDULER_NO_TASK != s5r->rtask)
2119 GNUNET_SCHEDULER_cancel (s5r->rtask);
2120 if (GNUNET_SCHEDULER_NO_TASK != s5r->fwdwtask)
2121 GNUNET_SCHEDULER_cancel (s5r->fwdwtask);
2122 if (GNUNET_SCHEDULER_NO_TASK != s5r->fwdrtask)
2123 GNUNET_SCHEDULER_cancel (s5r->fwdrtask);
2125 if (NULL != s5r->remote_sock)
2126 GNUNET_NETWORK_socket_close (s5r->remote_sock);
2127 if ((NULL != s5r->sock) && (s5r->cleanup_sock == GNUNET_YES))
2128 GNUNET_NETWORK_socket_close (s5r->sock);
2134 * Write data to socket
2136 * @param cls the closure
2137 * @param tc scheduler context
2140 do_write (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
2142 struct Socks5Request *s5r = cls;
2145 s5r->wtask = GNUNET_SCHEDULER_NO_TASK;
2147 if ((NULL != tc->read_ready) &&
2148 (GNUNET_NETWORK_fdset_isset (tc->write_ready, s5r->sock)) &&
2149 ((len = GNUNET_NETWORK_socket_send (s5r->sock, s5r->wbuf,
2152 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2153 "Successfully sent %d bytes to socket\n",
2159 GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING, "write");
2160 s5r->cleanup = GNUNET_YES;
2161 s5r->cleanup_sock = GNUNET_YES;
2167 if (GNUNET_YES == s5r->cleanup)
2173 if ((s5r->state == SOCKS5_DATA_TRANSFER) &&
2174 (s5r->fwdrtask == GNUNET_SCHEDULER_NO_TASK))
2176 GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL,
2178 &do_read_remote, s5r);
2182 * Read from remote end
2184 * @param cls closure
2185 * @param tc scheduler context
2188 do_read_remote (void* cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
2190 struct Socks5Request *s5r = cls;
2192 s5r->fwdrtask = GNUNET_SCHEDULER_NO_TASK;
2195 if ((NULL != tc->write_ready) &&
2196 (GNUNET_NETWORK_fdset_isset (tc->read_ready, s5r->remote_sock)) &&
2197 (s5r->wbuf_len = GNUNET_NETWORK_socket_recv (s5r->remote_sock, s5r->wbuf,
2198 sizeof (s5r->wbuf))))
2200 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2201 "Successfully read %d bytes from remote socket\n",
2206 if (s5r->wbuf_len == 0)
2207 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2208 "0 bytes received from remote... graceful shutdown!\n");
2209 if (s5r->fwdwtask != GNUNET_SCHEDULER_NO_TASK)
2210 GNUNET_SCHEDULER_cancel (s5r->fwdwtask);
2211 if (s5r->rtask != GNUNET_SCHEDULER_NO_TASK)
2212 GNUNET_SCHEDULER_cancel (s5r->rtask);
2214 GNUNET_NETWORK_socket_close (s5r->remote_sock);
2215 s5r->remote_sock = NULL;
2216 GNUNET_NETWORK_socket_close (s5r->sock);
2222 s5r->wtask = GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL,
2230 * Adds a socket to MHD
2232 * @param h the handle to the socket to add
2233 * @param daemon the daemon to add the fd to
2234 * @return whatever MHD_add_connection returns
2237 add_handle_to_mhd (struct GNUNET_NETWORK_Handle *h, struct MHD_Daemon *daemon)
2240 struct sockaddr *addr;
2243 fd = dup (GNUNET_NETWORK_get_fd (h));
2244 addr = GNUNET_NETWORK_get_addr (h);
2245 len = GNUNET_NETWORK_get_addrlen (h);
2247 return MHD_add_connection (daemon, fd, addr, len);
2251 * Read file in filename
2253 * @param filename file to read
2254 * @param size pointer where filesize is stored
2258 load_file (const char* filename,
2265 GNUNET_DISK_file_size (filename, &fsize,
2266 GNUNET_YES, GNUNET_YES))
2268 if (fsize > MAX_PEM_SIZE)
2270 *size = (unsigned int) fsize;
2271 buffer = GNUNET_malloc (*size);
2272 if (fsize != GNUNET_DISK_fn_read (filename, buffer, (size_t) fsize))
2274 GNUNET_free (buffer);
2282 * Load PEM key from file
2284 * @param key where to store the data
2285 * @param keyfile path to the PEM file
2286 * @return GNUNET_OK on success
2289 load_key_from_file (gnutls_x509_privkey_t key, const char* keyfile)
2291 gnutls_datum_t key_data;
2294 key_data.data = (unsigned char*) load_file (keyfile, &key_data.size);
2295 ret = gnutls_x509_privkey_import (key, &key_data,
2296 GNUTLS_X509_FMT_PEM);
2297 if (GNUTLS_E_SUCCESS != ret)
2299 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2300 _("Unable to import private key from file `%s'\n"),
2304 GNUNET_free (key_data.data);
2305 return (GNUTLS_E_SUCCESS != ret) ? GNUNET_SYSERR : GNUNET_OK;
2310 * Load cert from file
2312 * @param crt struct to store data in
2313 * @param certfile path to pem file
2314 * @return GNUNET_OK on success
2317 load_cert_from_file (gnutls_x509_crt_t crt, char* certfile)
2319 gnutls_datum_t cert_data;
2320 cert_data.data = NULL;
2323 cert_data.data = (unsigned char*) load_file (certfile, &cert_data.size);
2324 ret = gnutls_x509_crt_import (crt, &cert_data,
2325 GNUTLS_X509_FMT_PEM);
2326 if (GNUTLS_E_SUCCESS != ret)
2328 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2329 _("Unable to import certificate %s\n"), certfile);
2332 GNUNET_free (cert_data.data);
2333 return (GNUTLS_E_SUCCESS != ret) ? GNUNET_SYSERR : GNUNET_OK;
2338 * Generate new certificate for specific name
2340 * @param name the subject name to generate a cert for
2341 * @return a struct holding the PEM data
2343 static struct ProxyGNSCertificate *
2344 generate_gns_certificate (const char *name)
2348 unsigned int serial;
2349 size_t key_buf_size;
2350 size_t cert_buf_size;
2351 gnutls_x509_crt_t request;
2355 ret = gnutls_x509_crt_init (&request);
2357 if (GNUTLS_E_SUCCESS != ret)
2362 ret = gnutls_x509_crt_set_key (request, proxy_ca.key);
2364 if (GNUTLS_E_SUCCESS != ret)
2369 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Generating cert\n");
2371 struct ProxyGNSCertificate *pgc =
2372 GNUNET_malloc (sizeof (struct ProxyGNSCertificate));
2374 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Adding DNs\n");
2376 gnutls_x509_crt_set_dn_by_oid (request, GNUTLS_OID_X520_COUNTRY_NAME,
2379 gnutls_x509_crt_set_dn_by_oid (request, GNUTLS_OID_X520_ORGANIZATION_NAME,
2382 gnutls_x509_crt_set_dn_by_oid (request, GNUTLS_OID_X520_COMMON_NAME,
2383 0, name, strlen (name));
2385 ret = gnutls_x509_crt_set_version (request, 3);
2387 ret = gnutls_rnd (GNUTLS_RND_NONCE, &serial, sizeof (serial));
2389 etime = time (NULL);
2390 tm_data = localtime (&etime);
2393 ret = gnutls_x509_crt_set_serial (request,
2397 ret = gnutls_x509_crt_set_activation_time (request,
2400 etime = mktime (tm_data);
2407 ret = gnutls_x509_crt_set_expiration_time (request,
2409 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Signing...\n");
2411 ret = gnutls_x509_crt_sign (request, proxy_ca.cert, proxy_ca.key);
2413 key_buf_size = sizeof (pgc->key);
2414 cert_buf_size = sizeof (pgc->cert);
2416 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Exporting certificate...\n");
2418 gnutls_x509_crt_export (request, GNUTLS_X509_FMT_PEM,
2419 pgc->cert, &cert_buf_size);
2421 gnutls_x509_privkey_export (proxy_ca.key, GNUTLS_X509_FMT_PEM,
2422 pgc->key, &key_buf_size);
2425 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Cleaning up\n");
2426 gnutls_x509_crt_deinit (request);
2434 * Accept policy for mhdaemons
2437 * @param addr the sockaddr
2438 * @param addrlen the sockaddr length
2439 * @return MHD_NO if sockaddr is wrong or #conns too high
2442 accept_cb (void* cls, const struct sockaddr *addr, socklen_t addrlen)
2444 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2445 "In MHD accept policy cb\n");
2449 if (addr->sa_family == AF_UNIX)
2453 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2454 "Connection accepted\n");
2461 * Adds a socket to an SSL MHD instance
2462 * It is important the the domain name is
2463 * correct. In most cases we need to start a new daemon
2465 * @param h the handle to add to a daemon
2466 * @param domain the domain the ssl daemon has to serve
2467 * @return MHD_YES on success
2470 add_handle_to_ssl_mhd (struct GNUNET_NETWORK_Handle *h, const char* domain)
2472 struct MhdHttpList *hd = NULL;
2473 struct ProxyGNSCertificate *pgc;
2474 struct NetworkHandleList *nh;
2476 for (hd = mhd_httpd_head; NULL != hd; hd = hd->next)
2477 if (0 == strcmp (hd->domain, domain))
2482 pgc = generate_gns_certificate (domain);
2484 hd = GNUNET_malloc (sizeof (struct MhdHttpList));
2485 hd->is_ssl = GNUNET_YES;
2486 strcpy (hd->domain, domain);
2487 hd->proxy_cert = pgc;
2490 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2491 "No previous SSL instance found... starting new one for %s\n",
2493 hd->daemon = MHD_start_daemon (MHD_USE_DEBUG
2495 #if HAVE_MHD_NO_LISTEN_SOCKET
2496 | MHD_USE_NO_LISTEN_SOCKET,
2502 &create_response, hd,
2503 #if !HAVE_MHD_NO_LISTEN_SOCKET
2504 MHD_OPTION_LISTEN_SOCKET, GNUNET_NETWORK_get_fd (mhd_unix_socket),
2506 MHD_OPTION_CONNECTION_LIMIT,
2507 MHD_MAX_CONNECTIONS,
2508 MHD_OPTION_CONNECTION_TIMEOUT, (unsigned int) 16,
2509 MHD_OPTION_NOTIFY_COMPLETED, NULL, NULL,
2510 MHD_OPTION_HTTPS_MEM_KEY, pgc->key,
2511 MHD_OPTION_HTTPS_MEM_CERT, pgc->cert,
2514 GNUNET_assert (hd->daemon != NULL);
2515 hd->httpd_task = GNUNET_SCHEDULER_NO_TASK;
2517 GNUNET_CONTAINER_DLL_insert (mhd_httpd_head, mhd_httpd_tail, hd);
2520 nh = GNUNET_malloc (sizeof (struct NetworkHandleList));
2523 GNUNET_CONTAINER_DLL_insert (hd->socket_handles_head,
2524 hd->socket_handles_tail,
2527 return add_handle_to_mhd (h, hd->daemon);
2533 * Read data from incoming connection
2535 * @param cls the closure
2536 * @param tc the scheduler context
2539 do_read (void* cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
2541 struct Socks5Request *s5r = cls;
2542 struct socks5_client_hello *c_hello;
2543 struct socks5_server_hello *s_hello;
2544 struct socks5_client_request *c_req;
2545 struct socks5_server_response *s_resp;
2551 struct hostent *phost;
2553 struct sockaddr_in remote_addr;
2554 struct in_addr *r_sin_addr;
2556 struct NetworkHandleList *nh;
2558 s5r->rtask = GNUNET_SCHEDULER_NO_TASK;
2560 if ((NULL != tc->write_ready) &&
2561 (GNUNET_NETWORK_fdset_isset (tc->read_ready, s5r->sock)) &&
2562 (s5r->rbuf_len = GNUNET_NETWORK_socket_recv (s5r->sock, s5r->rbuf,
2563 sizeof (s5r->rbuf))))
2565 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2566 "Successfully read %d bytes from socket\n",
2571 if (s5r->rbuf_len != 0)
2572 GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING, "read");
2574 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "client disco!\n");
2576 if (s5r->fwdrtask != GNUNET_SCHEDULER_NO_TASK)
2577 GNUNET_SCHEDULER_cancel (s5r->fwdrtask);
2578 if (s5r->wtask != GNUNET_SCHEDULER_NO_TASK)
2579 GNUNET_SCHEDULER_cancel (s5r->wtask);
2580 if (s5r->fwdwtask != GNUNET_SCHEDULER_NO_TASK)
2581 GNUNET_SCHEDULER_cancel (s5r->fwdwtask);
2582 GNUNET_NETWORK_socket_close (s5r->remote_sock);
2583 GNUNET_NETWORK_socket_close (s5r->sock);
2588 if (s5r->state == SOCKS5_INIT)
2590 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2592 c_hello = (struct socks5_client_hello*)&s5r->rbuf;
2594 GNUNET_assert (c_hello->version == SOCKS_VERSION_5);
2596 s_hello = (struct socks5_server_hello*)&s5r->wbuf;
2597 s5r->wbuf_len = sizeof( struct socks5_server_hello );
2599 s_hello->version = c_hello->version;
2600 s_hello->auth_method = SOCKS_AUTH_NONE;
2602 /* Write response to client */
2603 s5r->wtask = GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL,
2607 s5r->rtask = GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL,
2611 s5r->state = SOCKS5_REQUEST;
2615 if (s5r->state == SOCKS5_REQUEST)
2617 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2618 "Processing SOCKS5 request\n");
2619 c_req = (struct socks5_client_request*)&s5r->rbuf;
2620 s_resp = (struct socks5_server_response*)&s5r->wbuf;
2621 //Only 10byte for ipv4 response!
2622 s5r->wbuf_len = 10;//sizeof (struct socks5_server_response);
2624 GNUNET_assert (c_req->addr_type == 3);
2626 dom_len = *((uint8_t*)(&(c_req->addr_type) + 1));
2627 memset(domain, 0, sizeof(domain));
2628 strncpy(domain, (char*)(&(c_req->addr_type) + 2), dom_len);
2629 req_port = *((uint16_t*)(&(c_req->addr_type) + 2 + dom_len));
2631 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2632 "Requested connection is %s:%d\n",
2636 if (is_tld (domain, GNUNET_GNS_TLD) ||
2637 is_tld (domain, GNUNET_GNS_TLD_ZKEY))
2639 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2640 "Requested connection is gnunet tld\n",
2644 if (ntohs(req_port) == HTTPS_PORT)
2646 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2647 "Requested connection is HTTPS\n");
2648 ret = add_handle_to_ssl_mhd ( s5r->sock, domain );
2650 else if (NULL != httpd)
2652 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2653 "Requested connection is HTTP\n");
2654 nh = GNUNET_malloc (sizeof (struct NetworkHandleList));
2657 GNUNET_CONTAINER_DLL_insert (mhd_httpd_head->socket_handles_head,
2658 mhd_httpd_head->socket_handles_tail,
2661 ret = add_handle_to_mhd ( s5r->sock, httpd );
2666 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2667 _("Failed to start HTTP server\n"));
2668 s_resp->version = 0x05;
2669 s_resp->reply = 0x01;
2670 s5r->cleanup = GNUNET_YES;
2671 s5r->cleanup_sock = GNUNET_YES;
2673 GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL,
2679 /* Signal success */
2680 s_resp->version = 0x05;
2681 s_resp->reply = 0x00;
2682 s_resp->reserved = 0x00;
2683 s_resp->addr_type = 0x01;
2685 s5r->cleanup = GNUNET_YES;
2686 s5r->cleanup_sock = GNUNET_NO;
2688 GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL,
2696 phost = (struct hostent*)gethostbyname (domain);
2699 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2700 "Resolve %s error!\n", domain );
2701 s_resp->version = 0x05;
2702 s_resp->reply = 0x01;
2703 s5r->cleanup = GNUNET_YES;
2704 s5r->cleanup_sock = GNUNET_YES;
2706 GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL,
2712 s5r->remote_sock = GNUNET_NETWORK_socket_create (AF_INET,
2715 r_sin_addr = (struct in_addr*)(phost->h_addr);
2716 remote_ip = r_sin_addr->s_addr;
2717 memset(&remote_addr, 0, sizeof(remote_addr));
2718 remote_addr.sin_family = AF_INET;
2719 #if HAVE_SOCKADDR_IN_SIN_LEN
2720 remote_addr.sin_len = sizeof (remote_addr);
2722 remote_addr.sin_addr.s_addr = remote_ip;
2723 remote_addr.sin_port = req_port;
2725 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2726 "target server: %s:%u\n", inet_ntoa(remote_addr.sin_addr),
2730 GNUNET_NETWORK_socket_connect ( s5r->remote_sock,
2731 (const struct sockaddr*)&remote_addr,
2732 sizeof (remote_addr)))
2733 && (errno != EINPROGRESS))
2735 GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING, "connect");
2736 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2737 "socket request error...\n");
2738 s_resp->version = 0x05;
2739 s_resp->reply = 0x01;
2741 GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL,
2748 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2749 "new remote connection\n");
2751 s_resp->version = 0x05;
2752 s_resp->reply = 0x00;
2753 s_resp->reserved = 0x00;
2754 s_resp->addr_type = 0x01;
2756 s5r->state = SOCKS5_DATA_TRANSFER;
2759 GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL,
2763 GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL,
2771 if (s5r->state == SOCKS5_DATA_TRANSFER)
2773 if ((s5r->remote_sock == NULL) || (s5r->rbuf_len == 0))
2775 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2776 "Closing connection to client\n");
2777 if (s5r->rtask != GNUNET_SCHEDULER_NO_TASK)
2778 GNUNET_SCHEDULER_cancel (s5r->rtask);
2779 if (s5r->fwdwtask != GNUNET_SCHEDULER_NO_TASK)
2780 GNUNET_SCHEDULER_cancel (s5r->fwdwtask);
2781 if (s5r->fwdrtask != GNUNET_SCHEDULER_NO_TASK)
2782 GNUNET_SCHEDULER_cancel (s5r->fwdrtask);
2783 if (s5r->fwdrtask != GNUNET_SCHEDULER_NO_TASK)
2784 GNUNET_SCHEDULER_cancel (s5r->fwdrtask);
2786 if (s5r->remote_sock != NULL)
2787 GNUNET_NETWORK_socket_close (s5r->remote_sock);
2788 GNUNET_NETWORK_socket_close (s5r->sock);
2793 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2794 "forwarding %d bytes from client\n", s5r->rbuf_len);
2797 GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL,
2799 &do_write_remote, s5r);
2801 if (s5r->fwdrtask == GNUNET_SCHEDULER_NO_TASK)
2804 GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL,
2806 &do_read_remote, s5r);
2816 * Accept new incoming connections
2818 * @param cls the closure
2819 * @param tc the scheduler context
2822 do_accept (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
2824 struct GNUNET_NETWORK_Handle *s;
2825 struct Socks5Request *s5r;
2827 ltask = GNUNET_SCHEDULER_NO_TASK;
2828 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
2831 ltask = GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL,
2835 s = GNUNET_NETWORK_socket_accept (lsock, NULL, NULL);
2839 GNUNET_log_strerror (GNUNET_ERROR_TYPE_ERROR, "accept");
2843 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2844 "Got an inbound connection, waiting for data\n");
2846 s5r = GNUNET_malloc (sizeof (struct Socks5Request));
2848 s5r->state = SOCKS5_INIT;
2849 s5r->wtask = GNUNET_SCHEDULER_NO_TASK;
2850 s5r->fwdwtask = GNUNET_SCHEDULER_NO_TASK;
2851 s5r->fwdrtask = GNUNET_SCHEDULER_NO_TASK;
2852 s5r->rtask = GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL,
2859 * Task run on shutdown
2861 * @param cls closure
2862 * @param tc task context
2865 do_shutdown (void *cls,
2866 const struct GNUNET_SCHEDULER_TaskContext *tc)
2869 struct MhdHttpList *hd;
2870 struct MhdHttpList *tmp_hd;
2871 struct NetworkHandleList *nh;
2872 struct NetworkHandleList *tmp_nh;
2873 struct ProxyCurlTask *ctask;
2874 struct ProxyCurlTask *ctask_tmp;
2876 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
2877 "Shutting down...\n");
2879 gnutls_global_deinit ();
2881 if (NULL != local_gns_zone)
2882 GNUNET_free (local_gns_zone);
2883 if (NULL != local_private_zone)
2884 GNUNET_free (local_private_zone);
2885 if (NULL != local_shorten_zone)
2886 GNUNET_free (local_shorten_zone);
2888 if (GNUNET_SCHEDULER_NO_TASK != curl_download_task)
2890 GNUNET_SCHEDULER_cancel (curl_download_task);
2891 curl_download_task = GNUNET_SCHEDULER_NO_TASK;
2894 for (hd = mhd_httpd_head; hd != NULL; hd = tmp_hd)
2898 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2899 "Stopping daemon\n");
2901 if (GNUNET_SCHEDULER_NO_TASK != hd->httpd_task)
2903 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2904 "Stopping select task %d\n",
2906 GNUNET_SCHEDULER_cancel (hd->httpd_task);
2907 hd->httpd_task = GNUNET_SCHEDULER_NO_TASK;
2910 if (NULL != hd->daemon)
2912 MHD_stop_daemon (hd->daemon);
2916 for (nh = hd->socket_handles_head; nh != NULL; nh = tmp_nh)
2920 GNUNET_NETWORK_socket_close (nh->h);
2925 if (NULL != hd->proxy_cert)
2927 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2928 "Free certificate\n");
2929 GNUNET_free (hd->proxy_cert);
2935 for (ctask=ctasks_head; ctask != NULL; ctask=ctask_tmp)
2937 ctask_tmp = ctask->next;
2939 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2940 "Cleaning up cURL task\n");
2942 if (ctask->curl != NULL)
2943 curl_easy_cleanup (ctask->curl);
2945 if (NULL != ctask->headers)
2946 curl_slist_free_all (ctask->headers);
2947 if (NULL != ctask->resolver)
2948 curl_slist_free_all (ctask->resolver);
2950 if (NULL != ctask->response)
2951 MHD_destroy_response (ctask->response);
2954 GNUNET_free (ctask);
2956 curl_multi_cleanup (curl_multi);
2958 GNUNET_GNS_disconnect (gns_handle);
2963 * Compiles a regex for us
2965 * @param re ptr to re struct
2966 * @param rt the expression to compile
2967 * @return 0 on success
2970 compile_regex (regex_t *re, const char* rt)
2975 status = regcomp (re, rt, REG_EXTENDED|REG_NEWLINE);
2978 regerror (status, re, err, 1024);
2979 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2980 "Regex error compiling '%s': %s\n", rt, err);
2988 * Loads the users local zone key
2990 * @return GNUNET_YES on success
2993 load_local_zone_key (const struct GNUNET_CONFIGURATION_Handle *cfg)
2996 struct GNUNET_CRYPTO_RsaPrivateKey *key = NULL;
2997 struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded pkey;
2998 struct GNUNET_CRYPTO_ShortHashCode *zone = NULL;
2999 struct GNUNET_CRYPTO_ShortHashAsciiEncoded zonename;
3001 if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_filename (cfg, "gns",
3002 "ZONEKEY", &keyfile))
3004 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3005 "Unable to load zone key config value!\n");
3009 if (GNUNET_NO == GNUNET_DISK_file_test (keyfile))
3011 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3012 "Unable to load zone key %s!\n", keyfile);
3013 GNUNET_free(keyfile);
3017 key = GNUNET_CRYPTO_rsa_key_create_from_file (keyfile);
3018 GNUNET_CRYPTO_rsa_key_get_public (key, &pkey);
3019 local_gns_zone = GNUNET_malloc (sizeof (struct GNUNET_CRYPTO_ShortHashCode));
3020 GNUNET_CRYPTO_short_hash(&pkey,
3021 sizeof(struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded),
3023 zone = local_gns_zone;
3024 GNUNET_CRYPTO_short_hash_to_enc (zone, &zonename);
3025 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3026 "Using zone: %s!\n", &zonename);
3027 GNUNET_CRYPTO_rsa_key_free(key);
3028 GNUNET_free(keyfile);
3031 if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_filename (cfg, "gns",
3032 "PRIVATE_ZONEKEY", &keyfile))
3034 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3035 "Unable to load private zone key config value!\n");
3038 if ((NULL != keyfile) && (GNUNET_NO == GNUNET_DISK_file_test (keyfile)))
3040 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3041 "Unable to load private zone key %s!\n", keyfile);
3042 GNUNET_free(keyfile);
3046 key = GNUNET_CRYPTO_rsa_key_create_from_file (keyfile);
3047 GNUNET_CRYPTO_rsa_key_get_public (key, &pkey);
3048 local_private_zone = GNUNET_malloc (sizeof (struct GNUNET_CRYPTO_ShortHashCode));
3049 GNUNET_CRYPTO_short_hash(&pkey,
3050 sizeof(struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded),
3051 local_private_zone);
3052 GNUNET_CRYPTO_short_hash_to_enc (zone, &zonename);
3053 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3054 "Using private zone: %s!\n", &zonename);
3055 GNUNET_CRYPTO_rsa_key_free(key);
3056 GNUNET_free(keyfile);
3060 if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_filename (cfg, "gns",
3061 "SHORTEN_ZONEKEY", &keyfile))
3063 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3064 "Unable to load shorten zone key config value!\n");
3067 if ((NULL != keyfile) && (GNUNET_NO == GNUNET_DISK_file_test (keyfile)))
3069 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3070 "Unable to load shorten zone key %s!\n", keyfile);
3071 GNUNET_free(keyfile);
3075 key = GNUNET_CRYPTO_rsa_key_create_from_file (keyfile);
3076 GNUNET_CRYPTO_rsa_key_get_public (key, &pkey);
3077 local_shorten_zone = GNUNET_malloc (sizeof (struct GNUNET_CRYPTO_ShortHashCode));
3078 GNUNET_CRYPTO_short_hash(&pkey,
3079 sizeof(struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded),
3080 local_shorten_zone);
3081 GNUNET_CRYPTO_short_hash_to_enc (zone, &zonename);
3082 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3083 "Using shorten zone: %s!\n", &zonename);
3084 GNUNET_CRYPTO_rsa_key_free(key);
3085 GNUNET_free(keyfile);
3092 * Main function that will be run
3094 * @param cls closure
3095 * @param args remaining command-line arguments
3096 * @param cfgfile name of the configuration file used (for saving, can be NULL!)
3097 * @param cfg configuration
3100 run (void *cls, char *const *args, const char *cfgfile,
3101 const struct GNUNET_CONFIGURATION_Handle *cfg)
3103 struct sockaddr_in sa;
3104 struct MhdHttpList *hd;
3105 char* cafile_cfg = NULL;
3107 #if !HAVE_MHD_NO_LISTEN_SOCKET
3109 char* proxy_sockfile;
3110 struct sockaddr_un mhd_unix_sock_addr;
3113 curl_multi = curl_multi_init ();
3115 if (NULL == curl_multi)
3117 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3118 "Failed to create cURL multo handle!\n");
3122 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
3124 cafile = cafile_opt;
3127 if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_filename (cfg, "gns-proxy",
3131 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3132 "Unable to load proxy CA config value!\n");
3133 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3134 "No proxy CA provided!\n");
3137 cafile = cafile_cfg;
3139 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3140 "Using %s as CA\n", cafile);
3142 gnutls_global_init ();
3143 gnutls_x509_crt_init (&proxy_ca.cert);
3144 gnutls_x509_privkey_init (&proxy_ca.key);
3146 if ( (GNUNET_OK != load_cert_from_file (proxy_ca.cert, cafile)) ||
3147 (GNUNET_OK != load_key_from_file (proxy_ca.key, cafile)) )
3149 // FIXME: release resources...
3153 GNUNET_free_non_null (cafile_cfg);
3155 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3156 "Loading Template\n");
3158 compile_regex (&re_dotplus, (char*) RE_A_HREF);
3160 gns_handle = GNUNET_GNS_connect (cfg);
3162 if (GNUNET_NO == load_local_zone_key (cfg))
3164 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3165 "Unable to load zone!\n");
3169 if (NULL == gns_handle)
3171 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3172 "Unable to connect to GNS!\n");
3176 memset (&sa, 0, sizeof (sa));
3177 sa.sin_family = AF_INET;
3178 sa.sin_port = htons (port);
3179 #if HAVE_SOCKADDR_IN_SIN_LEN
3180 sa.sin_len = sizeof (sa);
3183 lsock = GNUNET_NETWORK_socket_create (AF_INET,
3187 if ((NULL == lsock) ||
3189 GNUNET_NETWORK_socket_bind (lsock, (const struct sockaddr *) &sa,
3192 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3193 "Failed to create listen socket bound to `%s'",
3194 GNUNET_a2s ((const struct sockaddr *) &sa, sizeof (sa)));
3196 GNUNET_NETWORK_socket_close (lsock);
3200 if (GNUNET_OK != GNUNET_NETWORK_socket_listen (lsock, 5))
3202 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3203 "Failed to listen on socket bound to `%s'",
3204 GNUNET_a2s ((const struct sockaddr *) &sa, sizeof (sa)));
3208 ltask = GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL,
3209 lsock, &do_accept, NULL);
3214 if (0 != curl_global_init (CURL_GLOBAL_WIN32))
3216 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3217 "cURL global init failed!\n");
3221 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3222 "Proxy listens on port %u\n",
3225 mhd_httpd_head = NULL;
3226 mhd_httpd_tail = NULL;
3227 total_mhd_connections = 0;
3228 #ifndef HAVE_MHD_NO_LISTEN_SOCKET
3229 if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_filename (cfg, "gns-proxy",
3233 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3234 "Specify PROXY_UNIXPATH in gns-proxy config section!\n");
3238 mhd_unix_socket = GNUNET_NETWORK_socket_create (AF_UNIX,
3242 if (NULL == mhd_unix_socket)
3244 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3245 "Unable to create unix domain socket!\n");
3249 mhd_unix_sock_addr.sun_family = AF_UNIX;
3250 strcpy (mhd_unix_sock_addr.sun_path, proxy_sockfile);
3253 mhd_unix_sock_addr.sun_path[0] = '\0';
3255 #if HAVE_SOCKADDR_IN_SIN_LEN
3256 mhd_unix_sock_addr.sun_len = (u_char) sizeof (struct sockaddr_un);
3259 len = strlen (proxy_sockfile) + sizeof(AF_UNIX);
3261 GNUNET_free (proxy_sockfile);
3263 if (GNUNET_OK != GNUNET_NETWORK_socket_bind (mhd_unix_socket,
3264 (struct sockaddr*)&mhd_unix_sock_addr,
3267 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3268 "Unable to bind unix domain socket!\n");
3272 if (GNUNET_OK != GNUNET_NETWORK_socket_listen (mhd_unix_socket,
3275 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3276 "Unable to listen on unix domain socket!\n");
3281 hd = GNUNET_malloc (sizeof (struct MhdHttpList));
3282 hd->is_ssl = GNUNET_NO;
3283 strcpy (hd->domain, "");
3284 httpd = MHD_start_daemon (MHD_USE_DEBUG
3285 #if HAVE_MHD_NO_LISTEN_SOCKET
3286 | MHD_USE_NO_LISTEN_SOCKET,
3289 , 4444, //Dummy port
3292 &create_response, hd,
3293 #if !HAVE_MHD_NO_LISTEN_SOCKET
3294 MHD_OPTION_LISTEN_SOCKET, GNUNET_NETWORK_get_fd (mhd_unix_socket),
3296 MHD_OPTION_CONNECTION_LIMIT, MHD_MAX_CONNECTIONS,
3297 MHD_OPTION_CONNECTION_TIMEOUT, (unsigned int) 16,
3298 MHD_OPTION_NOTIFY_COMPLETED,
3302 GNUNET_assert (httpd != NULL);
3304 hd->httpd_task = GNUNET_SCHEDULER_NO_TASK;
3306 GNUNET_CONTAINER_DLL_insert (mhd_httpd_head, mhd_httpd_tail, hd);
3310 GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL,
3311 &do_shutdown, NULL);
3317 * The main function for gnunet-gns-proxy.
3319 * @param argc number of arguments from the command line
3320 * @param argv command line arguments
3321 * @return 0 ok, 1 on error
3324 main (int argc, char *const *argv)
3326 static const struct GNUNET_GETOPT_CommandLineOption options[] = {
3328 gettext_noop ("listen on specified port"), 1,
3329 &GNUNET_GETOPT_set_string, &port},
3330 {'a', "authority", NULL,
3331 gettext_noop ("pem file to use as CA"), 1,
3332 &GNUNET_GETOPT_set_string, &cafile_opt},
3333 GNUNET_GETOPT_OPTION_END
3338 if (GNUNET_OK != GNUNET_STRINGS_get_utf8_args (argc, argv, &argc, &argv))
3342 GNUNET_log_setup ("gnunet-gns-proxy", "WARNING", NULL);
3345 GNUNET_PROGRAM_run (argc, argv, "gnunet-gns-proxy",
3346 _("GNUnet GNS proxy"),
3348 &run, NULL)) ? 0 : 1;
3349 GNUNET_free_non_null ((char*)argv);