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;
194 /* Already accepted */
200 /* is curl running? */
203 /* Optional header replacements for curl (LEHO) */
204 struct curl_slist *headers;
206 /* Optional resolver replacements for curl (LEHO) */
207 struct curl_slist *resolver;
209 /* curl response code */
210 long curl_response_code;
212 /* The URL to fetch */
213 char url[MAX_HTTP_URI_LENGTH];
215 /* The cURL write buffer / MHD read buffer */
216 char buffer[CURL_MAX_WRITE_SIZE + CURL_BUF_PADDING];
218 /* Read pos of the data in the buffer */
219 char *buffer_read_ptr;
221 /* Write pos in the buffer */
222 char *buffer_write_ptr;
224 /* The buffer status (BUF_WAIT_FOR_CURL or BUF_WAIT_FOR_MHD) */
227 /* Number of bytes in buffer */
228 unsigned int bytes_in_buffer;
230 /* Indicates wheather the download is in progress */
231 int download_in_progress;
233 /* Indicates wheather the download was successful */
234 int download_is_finished;
236 /* Indicates wheather the download failed */
239 /* Indicates wheather we need to parse HTML */
242 /* Indicates wheather we are postprocessing the HTML right now */
243 int is_postprocessing;
245 /* Indicates wheather postprocessing has finished */
249 GNUNET_SCHEDULER_TaskIdentifier pp_task;
252 struct ProxyREMatch *pp_match_head;
255 struct ProxyREMatch *pp_match_tail;
257 /* The authority of the corresponding host (site of origin) */
260 /* The hostname (Host header field) */
266 /* The LEgacy HOstname (can be empty) */
269 /* The associated daemon list entry */
270 struct MhdHttpList *mhd;
272 /* The associated response */
273 struct MHD_Response *response;
276 struct ProxySetCookieHeader *set_cookies_head;
279 struct ProxySetCookieHeader *set_cookies_tail;
281 /* connection status */
288 struct MHD_Connection *connection;
291 size_t put_read_offset;
292 size_t put_read_size;
295 struct MHD_PostProcessor *post_handler;
298 struct ProxyUploadData *upload_data_head;
299 struct ProxyUploadData *upload_data_tail;
303 /* the type of POST encoding */
306 struct curl_httppost *httppost;
308 struct curl_httppost *httppost_last;
315 * Struct for RE matches in postprocessing of HTML
320 struct ProxyREMatch *next;
323 struct ProxyREMatch *prev;
332 struct GNUNET_GNS_ShortenRequest *shorten_task;
337 /* start of match in buffer */
340 /* end of match in buffer */
343 /* associated proxycurltask */
344 struct ProxyCurlTask *ctask;
348 * Struct for set-cookies
350 struct ProxySetCookieHeader
353 struct ProxySetCookieHeader *next;
356 struct ProxySetCookieHeader *prev;
363 * Post data structure
365 struct ProxyUploadData
368 struct ProxyUploadData *next;
371 struct ProxyUploadData *prev;
379 size_t content_length;
392 /* The port the proxy is running on (default 7777) */
393 static unsigned long port = GNUNET_GNS_PROXY_PORT;
395 /* The CA file (pem) to use for the proxy CA */
396 static char* cafile_opt;
398 /* The listen socket of the proxy */
399 static struct GNUNET_NETWORK_Handle *lsock;
401 /* The listen task ID */
402 GNUNET_SCHEDULER_TaskIdentifier ltask;
404 /* The cURL download task */
405 GNUNET_SCHEDULER_TaskIdentifier curl_download_task;
407 /* The non SSL httpd daemon handle */
408 static struct MHD_Daemon *httpd;
410 /* Number of current mhd connections */
411 static unsigned int total_mhd_connections;
413 /* The cURL multi handle */
414 static CURLM *curl_multi;
416 /* Handle to the GNS service */
417 static struct GNUNET_GNS_Handle *gns_handle;
419 /* DLL for ProxyCurlTasks */
420 static struct ProxyCurlTask *ctasks_head;
422 /* DLL for ProxyCurlTasks */
423 static struct ProxyCurlTask *ctasks_tail;
425 /* DLL for http daemons */
426 static struct MhdHttpList *mhd_httpd_head;
428 /* DLL for http daemons */
429 static struct MhdHttpList *mhd_httpd_tail;
431 /* Handle to the regex for dotplus (.+) replacement in HTML */
432 static regex_t re_dotplus;
434 /* The users local GNS zone hash */
435 static struct GNUNET_CRYPTO_ShortHashCode *local_gns_zone;
437 /* The users local private zone */
438 static struct GNUNET_CRYPTO_ShortHashCode *local_private_zone;
440 /* The users local shorten zone */
441 static struct GNUNET_CRYPTO_ShortHashCode *local_shorten_zone;
443 /* The CA for SSL certificate generation */
444 static struct ProxyCA proxy_ca;
446 /* UNIX domain socket for mhd */
447 struct GNUNET_NETWORK_Handle *mhd_unix_socket;
449 /* Shorten zone private key */
450 struct GNUNET_CRYPTO_RsaPrivateKey *shorten_zonekey;
453 * Checks if name is in tld
455 * @param name the name to check
456 * @param tld the TLD to check for
457 * @return GNUNET_YES or GNUNET_NO
460 is_tld(const char* name, const char* tld)
464 if (strlen(name) <= strlen(tld))
467 offset = strlen(name) - strlen(tld);
468 if (0 != strcmp (name+offset, tld))
470 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
471 "%s is not in .%s TLD\n", name, tld);
479 * convert integer to string representation
482 * @return the character
484 char i_to_hexchar (char i)
486 static char hexmap[] = "0123456789abcdef";
487 GNUNET_assert (sizeof (hexmap) > (i & 15));
488 return hexmap[i & 15];
492 * Escape given 0-terminated string
494 * @param to_esc string to escapse
495 * @return allocated new escaped string (MUST free!)
498 escape_to_urlenc (const char *to_esc)
500 char *pos = (char*)to_esc;
501 char *res = GNUNET_malloc (strlen (to_esc) * 3 + 1);
506 if (isalnum (*pos) ||
507 ('-' == *pos) || ('_' == *pos) ||
508 ('.' == *pos) || ('~' == *pos))
510 else if (' ' == *pos)
515 *rpos++ = i_to_hexchar (*pos >> 4);
516 *rpos++ = i_to_hexchar (*pos >> 15);
525 con_post_data_iter (void *cls,
526 enum MHD_ValueKind kind,
528 const char *filename,
529 const char *content_type,
530 const char *transfer_encoding,
535 struct ProxyCurlTask* ctask = cls;
536 struct ProxyUploadData* pdata;
540 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
541 "Got POST data: '%s : %s' at offset %llu size %lld\n",
542 key, data, off, size);
544 GNUNET_assert (NULL != ctask->post_type);
546 if (0 == strcasecmp (MHD_HTTP_POST_ENCODING_MULTIPART_FORMDATA,
549 ctask->is_httppost = GNUNET_YES;
553 pdata = GNUNET_malloc (sizeof (struct ProxyUploadData));
554 pdata->key = strdup (key);
556 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
559 if (NULL != filename)
561 pdata->filename = strdup (filename);
562 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
563 "Filename %s\n", filename);
566 if (NULL != content_type)
568 pdata->content_type = strdup (content_type);
569 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
570 "Content-Type %s\n", content_type);
573 pdata->value = GNUNET_malloc (size);
574 pdata->total_bytes = size;
575 memcpy (pdata->value, data, size);
576 GNUNET_CONTAINER_DLL_insert_tail (ctask->upload_data_head,
577 ctask->upload_data_tail,
580 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
581 "Copied %lld bytes of POST Data\n", size);
585 pdata = ctask->upload_data_tail;
586 new_value = GNUNET_malloc (size + pdata->total_bytes);
587 memcpy (new_value, pdata->value, pdata->total_bytes);
588 memcpy (new_value+off, data, size);
589 GNUNET_free (pdata->value);
590 pdata->total_bytes += size;
596 if (0 != strcasecmp (MHD_HTTP_POST_ENCODING_FORM_URLENCODED,
602 ctask->is_httppost = GNUNET_NO;
604 if (NULL != ctask->curl)
605 curl_easy_pause (ctask->curl, CURLPAUSE_CONT);
610 pdata = GNUNET_malloc (sizeof (struct ProxyUploadData));
611 enc = escape_to_urlenc (key);
612 pdata->value = GNUNET_malloc (strlen (enc) + 3);
613 if (NULL != ctask->upload_data_head)
615 pdata->value[0] = '&';
616 memcpy (pdata->value+1, enc, strlen (enc));
619 memcpy (pdata->value, enc, strlen (enc));
620 pdata->value[strlen (pdata->value)] = '=';
621 pdata->bytes_left = strlen (pdata->value);
622 pdata->total_bytes = pdata->bytes_left;
625 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
626 "Escaped POST key: '%s'\n",
629 GNUNET_CONTAINER_DLL_insert_tail (ctask->upload_data_head,
630 ctask->upload_data_tail,
635 pdata = GNUNET_malloc (sizeof (struct ProxyUploadData));
636 enc = escape_to_urlenc (data);
637 pdata->value = GNUNET_malloc (strlen (enc) + 1);
638 memcpy (pdata->value, enc, strlen (enc));
639 pdata->bytes_left = strlen (pdata->value);
640 pdata->total_bytes = pdata->bytes_left;
643 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
644 "Escaped POST value: '%s'\n",
647 GNUNET_CONTAINER_DLL_insert_tail (ctask->upload_data_head,
648 ctask->upload_data_tail,
655 * Read HTTP request header field 'Host'
657 * @param cls buffer to write to
658 * @param kind value kind
659 * @param key field key
660 * @param value field value
661 * @return MHD_NO when Host found
664 con_val_iter (void *cls,
665 enum MHD_ValueKind kind,
669 struct ProxyCurlTask *ctask = cls;
670 char* buf = ctask->host;
676 if (0 == strcmp ("Host", key))
678 port = strstr (value, ":");
681 strncpy (buf, value, port-value);
683 if ((1 != sscanf (port, "%u", &uport)) ||
684 (uport > UINT16_MAX) ||
686 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
687 "Unable to parse port!\n");
689 ctask->port = (uint16_t) uport;
696 if (0 == strcmp ("Accept-Encoding", key))
701 if (0 == strcasecmp (MHD_HTTP_HEADER_CONTENT_TYPE,
704 if (0 == strncasecmp (value,
705 MHD_HTTP_POST_ENCODING_FORM_URLENCODED,
706 strlen (MHD_HTTP_POST_ENCODING_FORM_URLENCODED)))
707 ctask->post_type = MHD_HTTP_POST_ENCODING_FORM_URLENCODED;
708 else if (0 == strncasecmp (value,
709 MHD_HTTP_POST_ENCODING_MULTIPART_FORMDATA,
710 strlen (MHD_HTTP_POST_ENCODING_MULTIPART_FORMDATA)))
711 ctask->post_type = MHD_HTTP_POST_ENCODING_MULTIPART_FORMDATA;
713 ctask->post_type = NULL;
717 cstr = GNUNET_malloc (strlen (key) + strlen (hdr_val) + 3);
718 GNUNET_snprintf (cstr, strlen (key) + strlen (hdr_val) + 3,
719 "%s: %s", key, hdr_val);
721 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
722 "Client Header: %s\n", cstr);
724 ctask->headers = curl_slist_append (ctask->headers, cstr);
732 * Callback for MHD response
735 * @param pos in buffer
737 * @param max space in buffer
738 * @return number of bytes written
741 mhd_content_cb (void *cls,
747 * Check HTTP response header for mime
749 * @param buffer curl buffer
750 * @param size curl blocksize
751 * @param nmemb curl blocknumber
753 * @return size of read bytes
756 curl_check_hdr (void *buffer, size_t size, size_t nmemb, void *cls)
758 size_t bytes = size * nmemb;
759 struct ProxyCurlTask *ctask = cls;
760 int html_mime_len = strlen (HTML_HDR_CONTENT);
761 int cookie_hdr_len = strlen (MHD_HTTP_HEADER_SET_COOKIE);
762 char hdr_mime[html_mime_len+1];
763 char hdr_generic[bytes+1];
764 char new_cookie_hdr[bytes+strlen (ctask->leho)+1];
765 char new_location[MAX_HTTP_URI_LENGTH+500];
775 char cors_hdr[strlen (ctask->leho) + strlen ("https://")];
777 if (NULL == ctask->response)
779 /* FIXME: get total size from curl (if available) */
780 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
781 "Creating response for %s\n", ctask->url);
782 ctask->response = MHD_create_response_from_callback (MHD_SIZE_UNKNOWN,
783 sizeof (ctask->buffer),
788 /* if we have a leho add a CORS header */
789 if (0 != strcmp ("", ctask->leho))
791 /* We could also allow ssl and http here */
792 if (ctask->mhd->is_ssl)
793 sprintf (cors_hdr, "https://%s", ctask->leho);
795 sprintf (cors_hdr, "http://%s", ctask->leho);
797 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
798 "MHD: Adding CORS header field %s\n",
801 if (GNUNET_NO == MHD_add_response_header (ctask->response,
802 "Access-Control-Allow-Origin",
805 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
806 "MHD: Error adding CORS header field %s\n",
810 ctask->ready_to_queue = GNUNET_YES;
813 if (html_mime_len <= bytes)
815 memcpy (hdr_mime, buffer, html_mime_len);
816 hdr_mime[html_mime_len] = '\0';
818 if (0 == strcmp (hdr_mime, HTML_HDR_CONTENT))
820 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
821 "Got HTML HTTP response header\n");
822 ctask->parse_content = GNUNET_YES;
826 if (cookie_hdr_len > bytes)
829 memcpy (hdr_generic, buffer, bytes);
830 hdr_generic[bytes] = '\0';
832 if ('\n' == hdr_generic[bytes-1])
833 hdr_generic[bytes-1] = '\0';
835 if (hdr_generic[bytes-2] == '\r')
836 hdr_generic[bytes-2] = '\0';
838 if (0 == memcmp (hdr_generic,
839 MHD_HTTP_HEADER_SET_COOKIE,
842 ndup = GNUNET_strdup (hdr_generic+cookie_hdr_len+1);
843 memset (new_cookie_hdr, 0, sizeof (new_cookie_hdr));
844 tok = strtok (ndup, ";");
846 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
847 "Looking for cookie in : %s\n", hdr_generic);
849 for (; tok != NULL; tok = strtok (NULL, ";"))
851 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
852 "Got Cookie token: %s\n", tok);
853 //memcpy (new_cookie_hdr+offset, tok, strlen (tok));
854 if (0 == memcmp (tok, " domain", strlen (" domain")))
856 cookie_domain = tok + strlen (" domain") + 1;
858 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
859 "Got Set-Cookie Domain: %s\n", cookie_domain);
861 if (strlen (cookie_domain) < strlen (ctask->leho))
863 delta_cdomain = strlen (ctask->leho) - strlen (cookie_domain);
864 if (0 == strcmp (cookie_domain, ctask->leho + (delta_cdomain)))
866 GNUNET_snprintf (new_cookie_hdr+offset,
867 sizeof (new_cookie_hdr),
868 " domain=%s", ctask->authority);
869 offset += strlen (" domain=") + strlen (ctask->authority);
870 new_cookie_hdr[offset] = ';';
875 else if (strlen (cookie_domain) == strlen (ctask->leho))
877 if (0 == strcmp (cookie_domain, ctask->leho))
879 GNUNET_snprintf (new_cookie_hdr+offset,
880 sizeof (new_cookie_hdr),
881 " domain=%s", ctask->host);
882 offset += strlen (" domain=") + strlen (ctask->host);
883 new_cookie_hdr[offset] = ';';
888 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
889 "Cookie domain invalid\n");
893 memcpy (new_cookie_hdr+offset, tok, strlen (tok));
894 offset += strlen (tok);
895 new_cookie_hdr[offset] = ';';
901 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
902 "Got Set-Cookie HTTP header %s\n", new_cookie_hdr);
904 if (GNUNET_NO == MHD_add_response_header (ctask->response,
905 MHD_HTTP_HEADER_SET_COOKIE,
908 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
909 "MHD: Error adding set-cookie header field %s\n",
910 hdr_generic+cookie_hdr_len+1);
915 ndup = GNUNET_strdup (hdr_generic);
916 hdr_type = strtok (ndup, ":");
918 if (NULL == hdr_type)
924 hdr_val = strtok (NULL, "");
934 if (0 == strcasecmp (MHD_HTTP_HEADER_LOCATION, hdr_type))
936 if (ctask->mhd->is_ssl)
938 sprintf (leho_host, "https://%s", ctask->leho);
939 sprintf (real_host, "https://%s", ctask->host);
943 sprintf (leho_host, "http://%s", ctask->leho);
944 sprintf (real_host, "http://%s", ctask->host);
947 if (0 == memcmp (leho_host, hdr_val, strlen (leho_host)))
949 sprintf (new_location, "%s%s", real_host, hdr_val+strlen (leho_host));
950 hdr_val = new_location;
954 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
955 "Trying to set %s: %s\n",
958 if (GNUNET_NO == MHD_add_response_header (ctask->response,
962 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
963 "MHD: Error adding %s header field %s\n",
974 * @param hd a http daemon list entry
977 run_httpd (struct MhdHttpList *hd);
988 * Task run whenever HTTP server operations are pending.
991 * @param tc sched context
995 const struct GNUNET_SCHEDULER_TaskContext *tc);
998 run_mhd_now (struct MhdHttpList *hd)
1000 if (GNUNET_SCHEDULER_NO_TASK != hd->httpd_task)
1002 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1003 "MHD: killing old task\n");
1004 GNUNET_SCHEDULER_cancel (hd->httpd_task);
1006 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1007 "MHD: Scheduling MHD now\n");
1008 hd->httpd_task = GNUNET_SCHEDULER_add_now (&do_httpd, hd);
1012 * Ask cURL for the select sets and schedule download
1015 curl_download_prepare ();
1018 * Callback to free content
1020 * @param cls content to free
1021 * @param tc task context
1024 mhd_content_free (void *cls,
1025 const struct GNUNET_SCHEDULER_TaskContext *tc)
1027 struct ProxyCurlTask *ctask = cls;
1028 struct ProxyUploadData *pdata;
1030 GNUNET_assert (NULL == ctask->pp_match_head);
1031 if (NULL != ctask->headers)
1032 curl_slist_free_all (ctask->headers);
1034 if (NULL != ctask->headers)
1035 curl_slist_free_all (ctask->resolver);
1037 if (NULL != ctask->response)
1038 MHD_destroy_response (ctask->response);
1040 if (NULL != ctask->post_handler)
1041 MHD_destroy_post_processor (ctask->post_handler);
1043 for (pdata = ctask->upload_data_head;; NULL != pdata; pdata = ctask->upload_data_head)
1045 GNUNET_CONTAINER_DLL_remove (ctask->upload_data_head,
1046 ctask->upload_data_tail,
1048 GNUNET_free_non_null (pdata->filename);
1049 GNUNET_free_non_null (pdata->content_type);
1050 GNUNET_free_non_null (pdata->key);
1051 GNUNET_free_non_null (pdata->value);
1052 GNUNET_free (pdata);
1054 GNUNET_free (ctask);
1059 * Callback for MHD response
1061 * @param cls closure
1062 * @param pos in buffer
1064 * @param max space in buffer
1065 * @return number of bytes written
1068 mhd_content_cb (void *cls,
1073 struct ProxyCurlTask *ctask = cls;
1074 struct ProxyREMatch *re_match;
1076 long long int bytes_to_copy = ctask->buffer_write_ptr - ctask->buffer_read_ptr;
1078 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1079 "MHD: content cb for %s. To copy: %lld\n",
1080 ctask->url, bytes_to_copy);
1081 GNUNET_assert (bytes_to_copy >= 0);
1083 if ((GNUNET_YES == ctask->download_is_finished) &&
1084 (GNUNET_NO == ctask->download_error) &&
1085 (0 == bytes_to_copy)) /* &&
1086 (BUF_WAIT_FOR_CURL == ctask->buf_status))*/
1088 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
1089 "MHD: sending response for %s\n", ctask->url);
1090 ctask->download_in_progress = GNUNET_NO;
1091 run_mhd_now (ctask->mhd);
1092 GNUNET_SCHEDULER_add_now (&mhd_content_free, ctask);
1093 total_mhd_connections--;
1094 return MHD_CONTENT_READER_END_OF_STREAM;
1097 if ((GNUNET_YES == ctask->download_error) &&
1098 (GNUNET_YES == ctask->download_is_finished) &&
1099 (0 == bytes_to_copy)) /* &&
1100 (BUF_WAIT_FOR_CURL == ctask->buf_status))*/
1102 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
1103 "MHD: sending error response\n");
1104 ctask->download_in_progress = GNUNET_NO;
1105 run_mhd_now (ctask->mhd);
1106 GNUNET_SCHEDULER_add_now (&mhd_content_free, ctask);
1107 total_mhd_connections--;
1108 return MHD_CONTENT_READER_END_WITH_ERROR;
1111 if ( ctask->buf_status == BUF_WAIT_FOR_CURL )
1115 for (re_match = ctask->pp_match_head; NULL != re_match; re_match = ctask->pp_match_head)
1117 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1118 "MHD: Processing PP %s\n",
1119 re_match->hostname);
1120 bytes_to_copy = re_match->start - ctask->buffer_read_ptr;
1121 GNUNET_assert (bytes_to_copy >= 0);
1123 if (bytes_to_copy+copied > max)
1125 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1126 "MHD: buffer in response too small for %d. Using available space (%d). (%s)\n",
1130 memcpy (buf+copied, ctask->buffer_read_ptr, max-copied);
1131 ctask->buffer_read_ptr += max-copied;
1133 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1134 "MHD: copied %d bytes\n", copied);
1138 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1139 "MHD: copying %d bytes to mhd response at offset %d\n",
1140 bytes_to_copy, ctask->buffer_read_ptr);
1141 memcpy (buf+copied, ctask->buffer_read_ptr, bytes_to_copy);
1142 copied += bytes_to_copy;
1144 if (GNUNET_NO == re_match->done)
1146 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1147 "MHD: Waiting for PP of %s\n", re_match->hostname);
1148 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1149 "MHD: copied %d bytes\n", copied);
1150 ctask->buffer_read_ptr += bytes_to_copy;
1154 if (strlen (re_match->result) > (max - copied))
1156 //FIXME partially copy domain here
1157 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1158 "MHD: buffer in response too small for %s! (%s)\n",
1161 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1162 "MHD: copied %d bytes\n", copied);
1163 ctask->buffer_read_ptr += bytes_to_copy;
1167 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1168 "MHD: Adding PP result %s to buffer\n",
1170 memcpy (buf+copied, re_match->result, strlen (re_match->result));
1171 copied += strlen (re_match->result);
1172 ctask->buffer_read_ptr = re_match->end;
1173 GNUNET_CONTAINER_DLL_remove (ctask->pp_match_head,
1174 ctask->pp_match_tail,
1176 GNUNET_free (re_match);
1179 bytes_to_copy = ctask->buffer_write_ptr - ctask->buffer_read_ptr;
1181 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1182 "MHD: copied: %d left: %d, space left in buf: %d\n",
1184 bytes_to_copy, max-copied);
1186 GNUNET_assert (0 <= bytes_to_copy);
1188 if (GNUNET_NO == ctask->download_is_finished)
1190 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1191 "MHD: Purging buffer\n");
1192 memmove (ctask->buffer, ctask->buffer_read_ptr, bytes_to_copy);
1193 ctask->buffer_read_ptr = ctask->buffer;
1194 ctask->buffer_write_ptr = ctask->buffer + bytes_to_copy;
1195 ctask->buffer[bytes_to_copy] = '\0';
1198 if (bytes_to_copy+copied > max)
1199 bytes_to_copy = max-copied;
1201 if (0 > bytes_to_copy)
1204 memcpy (buf+copied, ctask->buffer_read_ptr, bytes_to_copy);
1205 ctask->buffer_read_ptr += bytes_to_copy;
1206 copied += bytes_to_copy;
1207 ctask->buf_status = BUF_WAIT_FOR_CURL;
1209 if (NULL != ctask->curl)
1210 curl_easy_pause (ctask->curl, CURLPAUSE_CONT);
1212 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1213 "MHD: copied %d bytes\n", copied);
1214 run_mhd_now (ctask->mhd);
1220 * Shorten result callback
1222 * @param cls the proxycurltask
1223 * @param short_name the shortened name (NULL on error)
1226 process_shorten (void* cls, const char* short_name)
1228 struct ProxyREMatch *re_match = cls;
1229 char result[sizeof (re_match->result)];
1231 if (NULL == short_name)
1233 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1234 "PP: Unable to shorten %s\n",
1235 re_match->hostname);
1236 GNUNET_CONTAINER_DLL_remove (re_match->ctask->pp_match_head,
1237 re_match->ctask->pp_match_tail,
1239 GNUNET_free (re_match);
1243 if (0 == strcmp (short_name, re_match->ctask->leho))
1244 strcpy (result, re_match->ctask->host);
1246 strcpy (result, short_name);
1248 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1249 "PP: Shorten %s -> %s\n",
1253 if (re_match->ctask->mhd->is_ssl)
1254 sprintf (re_match->result, "href=\"https://%s", result);
1256 sprintf (re_match->result, "href=\"http://%s", result);
1258 re_match->done = GNUNET_YES;
1259 run_mhd_now (re_match->ctask->mhd);
1264 * Postprocess data in buffer. From read ptr to write ptr
1266 * @param cls the curlproxytask
1267 * @param tc task context
1270 postprocess_buffer (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
1272 struct ProxyCurlTask *ctask = cls;
1273 struct ProxyREMatch *re_match;
1274 char* re_ptr = ctask->buffer_read_ptr;
1275 char re_hostname[255];
1276 regmatch_t m[RE_N_MATCHES];
1278 ctask->pp_task = GNUNET_SCHEDULER_NO_TASK;
1280 if (GNUNET_YES != ctask->parse_content)
1282 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1283 "PP: Not parsing content\n");
1284 ctask->buf_status = BUF_WAIT_FOR_MHD;
1285 run_mhd_now (ctask->mhd);
1289 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1290 "PP: We need to parse the HTML\n");
1292 /* 0 means match found */
1293 while (0 == regexec (&re_dotplus, re_ptr, RE_N_MATCHES, m, 0))
1295 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1296 "PP: regex match\n");
1298 GNUNET_assert (m[1].rm_so != -1);
1300 memset (re_hostname, 0, sizeof (re_hostname));
1301 memcpy (re_hostname, re_ptr+m[1].rm_so, (m[3].rm_eo-m[1].rm_so));
1303 re_match = GNUNET_malloc (sizeof (struct ProxyREMatch));
1304 re_match->start = re_ptr + m[0].rm_so;
1305 re_match->end = re_ptr + m[3].rm_eo;
1306 re_match->done = GNUNET_NO;
1307 re_match->ctask = ctask;
1308 strcpy (re_match->hostname, re_hostname);
1309 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1310 "PP: Got hostname %s\n", re_hostname);
1311 re_ptr += m[3].rm_eo;
1313 if (GNUNET_YES == is_tld (re_match->hostname, GNUNET_GNS_TLD_PLUS))
1315 re_match->hostname[strlen(re_match->hostname)-1] = '\0';
1316 strcpy (re_match->hostname+strlen(re_match->hostname),
1320 re_match->shorten_task = GNUNET_GNS_shorten_zone (gns_handle,
1326 re_match); //FIXME cancel appropriately
1328 GNUNET_CONTAINER_DLL_insert_tail (ctask->pp_match_head,
1329 ctask->pp_match_tail,
1333 ctask->buf_status = BUF_WAIT_FOR_MHD;
1334 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1335 "PP: No more matches\n");
1336 run_mhd_now (ctask->mhd);
1340 * Handle data from cURL
1342 * @param ptr pointer to the data
1343 * @param size number of blocks of data
1344 * @param nmemb blocksize
1345 * @param ctx the curlproxytask
1346 * @return number of bytes handled
1349 curl_download_cb (void *ptr, size_t size, size_t nmemb, void* ctx)
1351 const char *cbuf = ptr;
1352 size_t total = size * nmemb;
1353 struct ProxyCurlTask *ctask = ctx;
1354 size_t buf_space = sizeof (ctask->buffer) -
1355 (ctask->buffer_write_ptr-ctask->buffer);
1357 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1358 "CURL: Got %d. %d free in buffer\n",
1361 if (BUF_WAIT_FOR_CURL != ctask->buf_status)
1362 return CURL_WRITEFUNC_PAUSE;
1364 if (total > (buf_space - CURL_BUF_PADDING))
1366 if (ctask->buf_status == BUF_WAIT_FOR_CURL)
1368 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1369 "CURL: Buffer full starting postprocessing\n");
1370 ctask->buf_status = BUF_WAIT_FOR_PP;
1371 ctask->pp_task = GNUNET_SCHEDULER_add_now (&postprocess_buffer,
1373 return CURL_WRITEFUNC_PAUSE;
1376 /* we should not get called in that case */
1377 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1378 "CURL: called out of context and no space in buffer!\n");
1379 return CURL_WRITEFUNC_PAUSE;
1382 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1383 "CURL: Copying %d bytes to buffer (%s)\n", total, ctask->url);
1384 memcpy (ctask->buffer_write_ptr, cbuf, total);
1385 ctask->bytes_in_buffer += total;
1386 ctask->buffer_write_ptr += total;
1387 ctask->buffer_write_ptr[0] = '\0';
1394 * cURL callback for put data
1397 put_read_callback (void *buf, size_t size, size_t nmemb, void *cls)
1399 struct ProxyCurlTask *ctask = cls;
1400 struct ProxyUploadData *pdata = ctask->upload_data_head;
1401 size_t len = size * nmemb;
1405 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1406 "CURL: put read callback\n");
1409 return CURL_READFUNC_PAUSE;
1412 if (NULL == pdata->value)
1414 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1415 "CURL: Terminating PUT\n");
1417 GNUNET_CONTAINER_DLL_remove (ctask->upload_data_head,
1418 ctask->upload_data_tail,
1420 GNUNET_free (pdata);
1424 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1425 "CURL: read callback value %s\n", pdata->value);
1427 to_copy = pdata->bytes_left;
1431 pos = pdata->value + (pdata->total_bytes - pdata->bytes_left);
1432 memcpy (buf, pos, to_copy);
1433 pdata->bytes_left -= to_copy;
1434 if (pdata->bytes_left <= 0)
1436 GNUNET_free (pdata->value);
1437 GNUNET_CONTAINER_DLL_remove (ctask->upload_data_head,
1438 ctask->upload_data_tail,
1440 GNUNET_free (pdata);
1447 * cURL callback for post data
1450 post_read_callback (void *buf, size_t size, size_t nmemb, void *cls)
1452 struct ProxyCurlTask *ctask = cls;
1453 struct ProxyUploadData *pdata = ctask->upload_data_head;
1454 size_t len = size * nmemb;
1458 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1459 "CURL: read callback\n");
1462 return CURL_READFUNC_PAUSE;
1465 if (NULL == pdata->value)
1467 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1468 "CURL: Terminating POST data\n");
1470 GNUNET_CONTAINER_DLL_remove (ctask->upload_data_head,
1471 ctask->upload_data_tail,
1473 GNUNET_free (pdata);
1477 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1478 "CURL: read callback value %s\n", pdata->value);
1480 to_copy = pdata->bytes_left;
1484 pos = pdata->value + (pdata->total_bytes - pdata->bytes_left);
1485 memcpy (buf, pos, to_copy);
1486 pdata->bytes_left -= to_copy;
1487 if (pdata->bytes_left <= 0)
1489 GNUNET_free (pdata->value);
1490 GNUNET_CONTAINER_DLL_remove (ctask->upload_data_head,
1491 ctask->upload_data_tail,
1493 GNUNET_free (pdata);
1499 * Task that is run when we are ready to receive more data
1502 * @param cls closure
1503 * @param tc task context
1506 curl_task_download (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
1509 * Ask cURL for the select sets and schedule download
1512 curl_download_prepare ()
1519 struct GNUNET_NETWORK_FDSet *grs;
1520 struct GNUNET_NETWORK_FDSet *gws;
1522 struct GNUNET_TIME_Relative rtime;
1528 mret = curl_multi_fdset (curl_multi, &rs, &ws, &es, &max);
1530 if (mret != CURLM_OK)
1532 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1533 "%s failed at %s:%d: `%s'\n",
1534 "curl_multi_fdset", __FILE__, __LINE__,
1535 curl_multi_strerror (mret));
1536 //TODO cleanup here?
1540 mret = curl_multi_timeout (curl_multi, &to);
1541 rtime = GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MILLISECONDS, to);
1543 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1544 "cURL multi fds: max=%d timeout=%llu\n", max, to);
1546 grs = GNUNET_NETWORK_fdset_create ();
1547 gws = GNUNET_NETWORK_fdset_create ();
1548 GNUNET_NETWORK_fdset_copy_native (grs, &rs, max + 1);
1549 GNUNET_NETWORK_fdset_copy_native (gws, &ws, max + 1);
1550 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1551 "Scheduling task cURL\n");
1553 if (curl_download_task != GNUNET_SCHEDULER_NO_TASK)
1554 GNUNET_SCHEDULER_cancel (curl_download_task);
1558 curl_download_task =
1559 GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT,
1562 &curl_task_download, curl_multi);
1564 else if (NULL != ctasks_head)
1566 /* as specified in curl docs */
1567 curl_download_task = GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_MILLISECONDS,
1568 &curl_task_download,
1571 GNUNET_NETWORK_fdset_destroy (gws);
1572 GNUNET_NETWORK_fdset_destroy (grs);
1577 * Task that is run when we are ready to receive more data
1580 * @param cls closure
1581 * @param tc task context
1584 curl_task_download (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
1588 struct CURLMsg *msg;
1590 struct ProxyCurlTask *ctask;
1594 struct ProxyCurlTask *clean_head = NULL;
1595 struct ProxyCurlTask *clean_tail = NULL;
1597 curl_download_task = GNUNET_SCHEDULER_NO_TASK;
1599 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
1601 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1602 "Shutdown requested while trying to download\n");
1606 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1614 mret = curl_multi_perform (curl_multi, &running);
1616 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1617 "Running curl tasks: %d\n", running);
1619 for (ctask = ctasks_head; NULL != ctask; ctask = ctask->next)
1621 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1622 "CTask: %s\n", ctask->url);
1626 if (num_ctasks != running)
1628 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1629 "%d ctasks, %d curl running\n", num_ctasks, running);
1635 msg = curl_multi_info_read (curl_multi, &msgnum);
1636 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1637 "Messages left: %d\n", msgnum);
1644 if ((msg->data.result != CURLE_OK) &&
1645 (msg->data.result != CURLE_GOT_NOTHING))
1647 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1648 "Download curl failed");
1650 for (ctask = ctasks_head; NULL != ctask; ctask = ctask->next)
1652 if (NULL == ctask->curl)
1655 if (memcmp (msg->easy_handle, ctask->curl, sizeof (CURL)) != 0)
1658 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1659 "CURL: Download failed for task %s: %s.\n",
1661 curl_easy_strerror (msg->data.result));
1662 ctask->download_is_finished = GNUNET_YES;
1663 ctask->download_error = GNUNET_YES;
1664 if (CURLE_OK == curl_easy_getinfo (ctask->curl,
1665 CURLINFO_RESPONSE_CODE,
1667 ctask->curl_response_code = resp_code;
1668 ctask->ready_to_queue = MHD_YES;
1669 ctask->buf_status = BUF_WAIT_FOR_MHD;
1670 run_mhd_now (ctask->mhd);
1672 GNUNET_CONTAINER_DLL_remove (ctasks_head, ctasks_tail,
1674 GNUNET_CONTAINER_DLL_insert (clean_head, clean_tail, ctask);
1677 GNUNET_assert (ctask != NULL);
1681 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1682 "CURL: download completed.\n");
1684 for (ctask = ctasks_head; NULL != ctask; ctask = ctask->next)
1686 if (NULL == ctask->curl)
1689 if (0 != memcmp (msg->easy_handle, ctask->curl, sizeof (CURL)))
1692 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1693 "CURL: completed task %s found.\n", ctask->url);
1694 if (CURLE_OK == curl_easy_getinfo (ctask->curl,
1695 CURLINFO_RESPONSE_CODE,
1697 ctask->curl_response_code = resp_code;
1700 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1701 "CURL: Completed ctask!\n");
1702 if (GNUNET_SCHEDULER_NO_TASK == ctask->pp_task)
1704 ctask->buf_status = BUF_WAIT_FOR_PP;
1705 ctask->pp_task = GNUNET_SCHEDULER_add_now (&postprocess_buffer,
1709 ctask->ready_to_queue = MHD_YES;
1710 ctask->download_is_finished = GNUNET_YES;
1712 /* We MUST not modify the multi handle else we loose messages */
1713 GNUNET_CONTAINER_DLL_remove (ctasks_head, ctasks_tail,
1715 GNUNET_CONTAINER_DLL_insert (clean_head, clean_tail, ctask);
1719 GNUNET_assert (ctask != NULL);
1721 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1722 "CURL: %s\n", curl_easy_strerror(msg->data.result));
1728 } while (msgnum > 0);
1730 for (ctask=clean_head; NULL != ctask; ctask = ctask->next)
1732 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1733 "CURL: Removing task %s.\n", ctask->url);
1734 curl_multi_remove_handle (curl_multi, ctask->curl);
1735 curl_easy_cleanup (ctask->curl);
1740 for (ctask=ctasks_head; NULL != ctask; ctask = ctask->next)
1745 if (num_ctasks != running)
1747 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1748 "CURL: %d tasks, %d running\n", num_ctasks, running);
1751 GNUNET_assert ( num_ctasks == running );
1753 } while (mret == CURLM_CALL_MULTI_PERFORM);
1755 if (mret != CURLM_OK)
1757 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "CURL: %s failed at %s:%d: `%s'\n",
1758 "curl_multi_perform", __FILE__, __LINE__,
1759 curl_multi_strerror (mret));
1761 curl_download_prepare();
1766 * Process LEHO lookup
1768 * @param cls the ctask
1769 * @param rd_count number of records returned
1770 * @param rd record data
1773 process_leho_lookup (void *cls,
1775 const struct GNUNET_NAMESTORE_RecordData *rd)
1777 struct ProxyCurlTask *ctask = cls;
1778 char hosthdr[262]; //256 + "Host: "
1782 struct hostent *phost;
1784 char resolvename[512];
1787 strcpy (ctask->leho, "");
1790 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1791 "No LEHO present!\n");
1793 for (i=0; i<rd_count; i++)
1795 if (rd[i].record_type != GNUNET_GNS_RECORD_LEHO)
1798 memcpy (ctask->leho, rd[i].data, rd[i].data_size);
1800 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1801 "Found LEHO %s for %s\n", ctask->leho, ctask->url);
1804 if (0 != strcmp (ctask->leho, ""))
1806 sprintf (hosthdr, "%s%s:%d", "Host: ", ctask->leho, ctask->port);
1807 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1808 "New HTTP header value: %s\n", hosthdr);
1809 ctask->headers = curl_slist_append (ctask->headers, hosthdr);
1810 GNUNET_assert (NULL != ctask->headers);
1811 ret = curl_easy_setopt (ctask->curl, CURLOPT_HTTPHEADER, ctask->headers);
1812 if (CURLE_OK != ret)
1814 GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "%s failed at %s:%d: `%s'\n",
1815 "curl_easy_setopt", __FILE__, __LINE__, curl_easy_strerror(ret));
1820 if (ctask->mhd->is_ssl)
1822 phost = (struct hostent*)gethostbyname (ctask->host);
1826 ssl_ip = inet_ntoa(*((struct in_addr*)(phost->h_addr)));
1827 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1828 "SSL target server: %s\n", ssl_ip);
1829 sprintf (resolvename, "%s:%d:%s", ctask->leho, HTTPS_PORT, ssl_ip);
1830 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1831 "Curl resolve: %s\n", resolvename);
1832 ctask->resolver = curl_slist_append ( ctask->resolver, resolvename);
1833 curl_easy_setopt (ctask->curl, CURLOPT_RESOLVE, ctask->resolver);
1834 sprintf (curlurl, "https://%s:%d%s", ctask->leho, ctask->port, ctask->url);
1835 curl_easy_setopt (ctask->curl, CURLOPT_URL, curlurl);
1839 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1840 "gethostbyname failed for %s!\n", ctask->host);
1841 ctask->download_is_finished = GNUNET_YES;
1842 ctask->download_error = GNUNET_YES;
1847 if (CURLM_OK != (mret=curl_multi_add_handle (curl_multi, ctask->curl)))
1849 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1850 "%s failed at %s:%d: `%s'\n",
1851 "curl_multi_add_handle", __FILE__, __LINE__,
1852 curl_multi_strerror (mret));
1853 ctask->download_is_finished = GNUNET_YES;
1854 ctask->download_error = GNUNET_YES;
1857 GNUNET_CONTAINER_DLL_insert (ctasks_head, ctasks_tail, ctask);
1859 curl_download_prepare ();
1864 * Initialize download and trigger curl
1866 * @param cls the proxycurltask
1867 * @param auth_name the name of the authority (site of origin) of ctask->host
1871 process_get_authority (void *cls,
1872 const char* auth_name)
1874 struct ProxyCurlTask *ctask = cls;
1876 if (NULL == auth_name)
1878 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1879 "Get authority failed!\n");
1880 strcpy (ctask->authority, "");
1884 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1885 "Get authority yielded %s\n", auth_name);
1886 strcpy (ctask->authority, auth_name);
1889 GNUNET_GNS_lookup_zone (gns_handle,
1892 GNUNET_GNS_RECORD_LEHO,
1893 GNUNET_YES, //Only cached for performance
1895 &process_leho_lookup,
1900 mhd_log_callback (void* cls, const char* url)
1902 struct ProxyCurlTask *ctask;
1904 ctask = GNUNET_malloc (sizeof (struct ProxyCurlTask));
1905 strcpy (ctask->url, url);
1906 ctask->accepted = GNUNET_NO;
1911 * Main MHD callback for handling requests.
1914 * @param con MHD connection handle
1915 * @param url the url in the request
1916 * @param meth the HTTP method used ("GET", "PUT", etc.)
1917 * @param ver the HTTP version string (i.e. "HTTP/1.1")
1918 * @param upload_data the data being uploaded (excluding HEADERS,
1919 * for a POST that fits into memory and that is encoded
1920 * with a supported encoding, the POST data will NOT be
1921 * given in upload_data and is instead available as
1922 * part of MHD_get_connection_values; very large POST
1923 * data *will* be made available incrementally in
1925 * @param upload_data_size set initially to the size of the
1926 * upload_data provided; the method must update this
1927 * value to the number of bytes NOT processed;
1928 * @param con_cls pointer to location where we store the 'struct Request'
1929 * @return MHD_YES if the connection was handled successfully,
1930 * MHD_NO if the socket must be closed due to a serious
1931 * error while handling the request
1934 create_response (void *cls,
1935 struct MHD_Connection *con,
1939 const char *upload_data,
1940 size_t *upload_data_size,
1943 struct MhdHttpList* hd = cls;
1944 const char* page = "<html><head><title>gnoxy</title>"\
1945 "</head><body>cURL fail</body></html>";
1947 char curlurl[MAX_HTTP_URI_LENGTH]; // buffer overflow!
1951 struct ProxyCurlTask *ctask = *con_cls;
1952 struct ProxyUploadData *fin_post;
1953 struct curl_forms forms[5];
1954 struct ProxyUploadData *upload_data_iter;
1957 if ((0 != strcasecmp (meth, MHD_HTTP_METHOD_GET)) &&
1958 (0 != strcasecmp (meth, MHD_HTTP_METHOD_PUT)) &&
1959 (0 != strcasecmp (meth, MHD_HTTP_METHOD_POST)) &&
1960 (0 != strcasecmp (meth, MHD_HTTP_METHOD_HEAD)))
1962 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1963 "MHD: %s NOT IMPLEMENTED!\n", meth);
1968 if (GNUNET_NO == ctask->accepted)
1971 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
1972 "Got %s request for %s\n", meth, url);
1974 ctask->curl = curl_easy_init();
1975 ctask->curl_running = GNUNET_NO;
1976 if (NULL == ctask->curl)
1978 ctask->response = MHD_create_response_from_buffer (strlen (page),
1980 MHD_RESPMEM_PERSISTENT);
1981 ret = MHD_queue_response (con,
1984 MHD_destroy_response (ctask->response);
1985 GNUNET_free (ctask);
1989 if (ctask->mhd->is_ssl)
1990 ctask->port = HTTPS_PORT;
1992 ctask->port = HTTP_PORT;
1994 MHD_get_connection_values (con,
1996 &con_val_iter, ctask);
1998 curl_easy_setopt (ctask->curl, CURLOPT_HEADERFUNCTION, &curl_check_hdr);
1999 curl_easy_setopt (ctask->curl, CURLOPT_HEADERDATA, ctask);
2000 curl_easy_setopt (ctask->curl, CURLOPT_WRITEFUNCTION, &curl_download_cb);
2001 curl_easy_setopt (ctask->curl, CURLOPT_WRITEDATA, ctask);
2002 curl_easy_setopt (ctask->curl, CURLOPT_FOLLOWLOCATION, 0);
2003 curl_easy_setopt (ctask->curl, CURLOPT_IPRESOLVE, CURL_IPRESOLVE_V4);
2005 if (GNUNET_NO == ctask->mhd->is_ssl)
2007 sprintf (curlurl, "http://%s:%d%s", ctask->host, ctask->port, ctask->url);
2008 curl_easy_setopt (ctask->curl, CURLOPT_URL, curlurl);
2012 curl_easy_setopt (ctask->curl, CURLOPT_FAILONERROR, 1);
2013 curl_easy_setopt (ctask->curl, CURLOPT_CONNECTTIMEOUT, 600L);
2014 curl_easy_setopt (ctask->curl, CURLOPT_TIMEOUT, 600L);
2016 /* Add GNS header */
2017 //ctask->headers = curl_slist_append (ctask->headers,
2019 ctask->accepted = GNUNET_YES;
2020 ctask->download_in_progress = GNUNET_YES;
2021 ctask->buf_status = BUF_WAIT_FOR_CURL;
2022 ctask->connection = con;
2023 ctask->curl_response_code = MHD_HTTP_OK;
2024 ctask->buffer_read_ptr = ctask->buffer;
2025 ctask->buffer_write_ptr = ctask->buffer;
2026 ctask->pp_task = GNUNET_SCHEDULER_NO_TASK;
2029 if (0 == strcasecmp (meth, MHD_HTTP_METHOD_PUT))
2031 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2032 "Setting up PUT\n");
2034 curl_easy_setopt (ctask->curl, CURLOPT_UPLOAD, 1);
2035 curl_easy_setopt (ctask->curl, CURLOPT_READDATA, ctask);
2036 curl_easy_setopt (ctask->curl, CURLOPT_READFUNCTION, &put_read_callback);
2037 ctask->headers = curl_slist_append (ctask->headers,
2038 "Transfer-Encoding: chunked");
2041 if (0 == strcasecmp (meth, MHD_HTTP_METHOD_POST))
2043 //FIXME handle multipart
2044 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2045 "Setting up POST processor\n");
2046 ctask->post_handler = MHD_create_post_processor (con,
2048 &con_post_data_iter,
2050 ctask->headers = curl_slist_append (ctask->headers,
2051 "Transfer-Encoding: chunked");
2055 if (0 == strcasecmp (meth, MHD_HTTP_METHOD_HEAD))
2057 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2058 "Setting NOBODY\n");
2059 curl_easy_setopt (ctask->curl, CURLOPT_NOBODY, 1);
2063 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2064 "MHD: Adding new curl task for %s\n", ctask->host);
2066 GNUNET_GNS_get_authority (gns_handle,
2068 &process_get_authority,
2070 ctask->ready_to_queue = GNUNET_NO;
2071 ctask->fin = GNUNET_NO;
2072 ctask->curl_running = GNUNET_YES;
2076 ctask = (struct ProxyCurlTask *) *con_cls;
2077 if (0 == strcasecmp (meth, MHD_HTTP_METHOD_POST))
2079 if (0 != *upload_data_size)
2082 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
2083 "Invoking POST processor\n");
2084 MHD_post_process (ctask->post_handler,
2085 upload_data, *upload_data_size);
2086 *upload_data_size = 0;
2087 if ((GNUNET_NO == ctask->is_httppost) &&
2088 (GNUNET_NO == ctask->curl_running))
2090 curl_easy_setopt (ctask->curl, CURLOPT_POST, 1);
2091 curl_easy_setopt (ctask->curl, CURLOPT_READFUNCTION,
2092 &post_read_callback);
2093 curl_easy_setopt (ctask->curl, CURLOPT_READDATA, ctask);
2095 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2096 "MHD: Adding new curl task for %s\n", ctask->host);
2098 GNUNET_GNS_get_authority (gns_handle,
2100 &process_get_authority,
2102 ctask->ready_to_queue = GNUNET_NO;
2103 ctask->fin = GNUNET_NO;
2104 ctask->curl_running = GNUNET_YES;
2108 else if (GNUNET_NO == ctask->post_done)
2110 if (GNUNET_YES == ctask->is_httppost)
2113 for (upload_data_iter = ctask->upload_data_head;
2114 NULL != upload_data_iter;
2115 upload_data_iter = upload_data_iter->next)
2117 if (NULL != upload_data_iter->filename)
2119 forms[i].option = CURLFORM_FILENAME;
2120 forms[i].value = upload_data_iter->filename;
2121 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2122 "Adding filename %s\n",
2126 if (NULL != upload_data_iter->content_type)
2128 forms[i].option = CURLFORM_CONTENTTYPE;
2129 forms[i].value = upload_data_iter->content_type;
2130 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2131 "Adding content type %s\n",
2135 forms[i].option = CURLFORM_PTRCONTENTS;
2136 forms[i].value = upload_data_iter->value;
2137 forms[i+1].option = CURLFORM_END;
2139 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2140 "Adding formdata for %s (len=%lld)\n",
2141 upload_data_iter->key,
2142 upload_data_iter->total_bytes);
2144 curl_formadd(&ctask->httppost, &ctask->httppost_last,
2145 CURLFORM_COPYNAME, upload_data_iter->key,
2146 CURLFORM_CONTENTSLENGTH, upload_data_iter->total_bytes,
2147 CURLFORM_ARRAY, forms,
2150 curl_easy_setopt (ctask->curl, CURLOPT_HTTPPOST,
2153 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2154 "MHD: Adding new curl task for %s\n", ctask->host);
2156 GNUNET_GNS_get_authority (gns_handle,
2158 &process_get_authority,
2160 ctask->ready_to_queue = GNUNET_YES;
2161 ctask->fin = GNUNET_NO;
2162 ctask->curl_running = GNUNET_YES;
2163 ctask->post_done = GNUNET_YES;
2167 fin_post = GNUNET_malloc (sizeof (struct ProxyUploadData));
2168 GNUNET_CONTAINER_DLL_insert_tail (ctask->upload_data_head,
2169 ctask->upload_data_tail,
2171 ctask->post_done = GNUNET_YES;
2176 if (GNUNET_YES != ctask->ready_to_queue)
2177 return MHD_YES; /* wait longer */
2179 if (GNUNET_YES == ctask->fin)
2182 ctask->fin = GNUNET_YES;
2183 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2184 "MHD: Queueing response for %s\n", ctask->url);
2185 ret = MHD_queue_response (con, ctask->curl_response_code, ctask->response);
2186 run_mhd_now (ctask->mhd);
2197 struct MhdHttpList *hd;
2199 for (hd=mhd_httpd_head; NULL != hd; hd = hd->next)
2207 * @param hd the daemon to run
2210 run_httpd (struct MhdHttpList *hd)
2215 struct GNUNET_NETWORK_FDSet *wrs;
2216 struct GNUNET_NETWORK_FDSet *wws;
2217 struct GNUNET_NETWORK_FDSet *wes;
2220 unsigned MHD_LONG_LONG timeout;
2221 struct GNUNET_TIME_Relative tv;
2226 wrs = GNUNET_NETWORK_fdset_create ();
2227 wes = GNUNET_NETWORK_fdset_create ();
2228 wws = GNUNET_NETWORK_fdset_create ();
2230 GNUNET_assert (MHD_YES == MHD_get_fdset (hd->daemon, &rs, &ws, &es, &max));
2233 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2234 "MHD fds: max=%d\n", max);
2236 haveto = MHD_get_timeout (hd->daemon, &timeout);
2238 if (MHD_YES == haveto)
2239 tv.rel_value = (uint64_t) timeout;
2241 tv = GNUNET_TIME_UNIT_FOREVER_REL;
2242 GNUNET_NETWORK_fdset_copy_native (wrs, &rs, max + 1);
2243 GNUNET_NETWORK_fdset_copy_native (wws, &ws, max + 1);
2244 GNUNET_NETWORK_fdset_copy_native (wes, &es, max + 1);
2246 if (GNUNET_SCHEDULER_NO_TASK != hd->httpd_task)
2247 GNUNET_SCHEDULER_cancel (hd->httpd_task);
2249 GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_HIGH,
2252 GNUNET_NETWORK_fdset_destroy (wrs);
2253 GNUNET_NETWORK_fdset_destroy (wws);
2254 GNUNET_NETWORK_fdset_destroy (wes);
2259 * Task run whenever HTTP server operations are pending.
2262 * @param tc sched context
2265 do_httpd (void *cls,
2266 const struct GNUNET_SCHEDULER_TaskContext *tc)
2268 struct MhdHttpList *hd = cls;
2270 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2271 "MHD: Main loop\n");
2272 hd->httpd_task = GNUNET_SCHEDULER_NO_TASK;
2273 MHD_run (hd->daemon);
2280 * Read data from socket
2282 * @param cls the closure
2283 * @param tc scheduler context
2286 do_read (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
2289 * Read from remote end
2291 * @param cls closure
2292 * @param tc scheduler context
2295 do_read_remote (void* cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
2298 * Write data to remote socket
2300 * @param cls the closure
2301 * @param tc scheduler context
2304 do_write_remote (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
2306 struct Socks5Request *s5r = cls;
2309 s5r->fwdwtask = GNUNET_SCHEDULER_NO_TASK;
2311 if ((NULL != tc->read_ready) &&
2312 (GNUNET_NETWORK_fdset_isset (tc->write_ready, s5r->remote_sock)) &&
2313 ((len = GNUNET_NETWORK_socket_send (s5r->remote_sock, s5r->rbuf,
2316 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2317 "Successfully sent %d bytes to remote socket\n",
2322 GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING, "write remote");
2323 if (GNUNET_SCHEDULER_NO_TASK != s5r->rtask)
2324 GNUNET_SCHEDULER_cancel (s5r->rtask);
2325 if (GNUNET_SCHEDULER_NO_TASK != s5r->wtask)
2326 GNUNET_SCHEDULER_cancel (s5r->wtask);
2327 if (GNUNET_SCHEDULER_NO_TASK != s5r->fwdrtask)
2328 GNUNET_SCHEDULER_cancel (s5r->fwdrtask);
2329 GNUNET_NETWORK_socket_close (s5r->remote_sock);
2330 GNUNET_NETWORK_socket_close (s5r->sock);
2336 GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL,
2343 * Clean up s5r handles
2345 * @param s5r the handle to destroy
2348 cleanup_s5r (struct Socks5Request *s5r)
2350 if (GNUNET_SCHEDULER_NO_TASK != s5r->rtask)
2351 GNUNET_SCHEDULER_cancel (s5r->rtask);
2352 if (GNUNET_SCHEDULER_NO_TASK != s5r->fwdwtask)
2353 GNUNET_SCHEDULER_cancel (s5r->fwdwtask);
2354 if (GNUNET_SCHEDULER_NO_TASK != s5r->fwdrtask)
2355 GNUNET_SCHEDULER_cancel (s5r->fwdrtask);
2357 if (NULL != s5r->remote_sock)
2358 GNUNET_NETWORK_socket_close (s5r->remote_sock);
2359 if ((NULL != s5r->sock) && (s5r->cleanup_sock == GNUNET_YES))
2360 GNUNET_NETWORK_socket_close (s5r->sock);
2366 * Write data to socket
2368 * @param cls the closure
2369 * @param tc scheduler context
2372 do_write (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
2374 struct Socks5Request *s5r = cls;
2377 s5r->wtask = GNUNET_SCHEDULER_NO_TASK;
2379 if ((NULL != tc->read_ready) &&
2380 (GNUNET_NETWORK_fdset_isset (tc->write_ready, s5r->sock)) &&
2381 ((len = GNUNET_NETWORK_socket_send (s5r->sock, s5r->wbuf,
2384 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2385 "Successfully sent %d bytes to socket\n",
2391 GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING, "write");
2392 s5r->cleanup = GNUNET_YES;
2393 s5r->cleanup_sock = GNUNET_YES;
2399 if (GNUNET_YES == s5r->cleanup)
2405 if ((s5r->state == SOCKS5_DATA_TRANSFER) &&
2406 (s5r->fwdrtask == GNUNET_SCHEDULER_NO_TASK))
2408 GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL,
2410 &do_read_remote, s5r);
2414 * Read from remote end
2416 * @param cls closure
2417 * @param tc scheduler context
2420 do_read_remote (void* cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
2422 struct Socks5Request *s5r = cls;
2424 s5r->fwdrtask = GNUNET_SCHEDULER_NO_TASK;
2427 if ((NULL != tc->write_ready) &&
2428 (GNUNET_NETWORK_fdset_isset (tc->read_ready, s5r->remote_sock)) &&
2429 (s5r->wbuf_len = GNUNET_NETWORK_socket_recv (s5r->remote_sock, s5r->wbuf,
2430 sizeof (s5r->wbuf))))
2432 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2433 "Successfully read %d bytes from remote socket\n",
2438 if (s5r->wbuf_len == 0)
2439 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2440 "0 bytes received from remote... graceful shutdown!\n");
2441 if (s5r->fwdwtask != GNUNET_SCHEDULER_NO_TASK)
2442 GNUNET_SCHEDULER_cancel (s5r->fwdwtask);
2443 if (s5r->rtask != GNUNET_SCHEDULER_NO_TASK)
2444 GNUNET_SCHEDULER_cancel (s5r->rtask);
2446 GNUNET_NETWORK_socket_close (s5r->remote_sock);
2447 s5r->remote_sock = NULL;
2448 GNUNET_NETWORK_socket_close (s5r->sock);
2454 s5r->wtask = GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL,
2462 * Adds a socket to MHD
2464 * @param h the handle to the socket to add
2465 * @param daemon the daemon to add the fd to
2466 * @return whatever MHD_add_connection returns
2469 add_handle_to_mhd (struct GNUNET_NETWORK_Handle *h, struct MHD_Daemon *daemon)
2472 struct sockaddr *addr;
2475 fd = dup (GNUNET_NETWORK_get_fd (h));
2476 addr = GNUNET_NETWORK_get_addr (h);
2477 len = GNUNET_NETWORK_get_addrlen (h);
2479 return MHD_add_connection (daemon, fd, addr, len);
2483 * Read file in filename
2485 * @param filename file to read
2486 * @param size pointer where filesize is stored
2490 load_file (const char* filename,
2497 GNUNET_DISK_file_size (filename, &fsize,
2498 GNUNET_YES, GNUNET_YES))
2500 if (fsize > MAX_PEM_SIZE)
2502 *size = (unsigned int) fsize;
2503 buffer = GNUNET_malloc (*size);
2504 if (fsize != GNUNET_DISK_fn_read (filename, buffer, (size_t) fsize))
2506 GNUNET_free (buffer);
2514 * Load PEM key from file
2516 * @param key where to store the data
2517 * @param keyfile path to the PEM file
2518 * @return GNUNET_OK on success
2521 load_key_from_file (gnutls_x509_privkey_t key, const char* keyfile)
2523 gnutls_datum_t key_data;
2526 key_data.data = (unsigned char*) load_file (keyfile, &key_data.size);
2527 ret = gnutls_x509_privkey_import (key, &key_data,
2528 GNUTLS_X509_FMT_PEM);
2529 if (GNUTLS_E_SUCCESS != ret)
2531 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2532 _("Unable to import private key from file `%s'\n"),
2536 GNUNET_free (key_data.data);
2537 return (GNUTLS_E_SUCCESS != ret) ? GNUNET_SYSERR : GNUNET_OK;
2542 * Load cert from file
2544 * @param crt struct to store data in
2545 * @param certfile path to pem file
2546 * @return GNUNET_OK on success
2549 load_cert_from_file (gnutls_x509_crt_t crt, char* certfile)
2551 gnutls_datum_t cert_data;
2552 cert_data.data = NULL;
2555 cert_data.data = (unsigned char*) load_file (certfile, &cert_data.size);
2556 ret = gnutls_x509_crt_import (crt, &cert_data,
2557 GNUTLS_X509_FMT_PEM);
2558 if (GNUTLS_E_SUCCESS != ret)
2560 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2561 _("Unable to import certificate %s\n"), certfile);
2564 GNUNET_free (cert_data.data);
2565 return (GNUTLS_E_SUCCESS != ret) ? GNUNET_SYSERR : GNUNET_OK;
2570 * Generate new certificate for specific name
2572 * @param name the subject name to generate a cert for
2573 * @return a struct holding the PEM data
2575 static struct ProxyGNSCertificate *
2576 generate_gns_certificate (const char *name)
2580 unsigned int serial;
2581 size_t key_buf_size;
2582 size_t cert_buf_size;
2583 gnutls_x509_crt_t request;
2587 ret = gnutls_x509_crt_init (&request);
2589 if (GNUTLS_E_SUCCESS != ret)
2594 ret = gnutls_x509_crt_set_key (request, proxy_ca.key);
2596 if (GNUTLS_E_SUCCESS != ret)
2601 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Generating cert\n");
2603 struct ProxyGNSCertificate *pgc =
2604 GNUNET_malloc (sizeof (struct ProxyGNSCertificate));
2606 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Adding DNs\n");
2608 gnutls_x509_crt_set_dn_by_oid (request, GNUTLS_OID_X520_COUNTRY_NAME,
2611 gnutls_x509_crt_set_dn_by_oid (request, GNUTLS_OID_X520_ORGANIZATION_NAME,
2614 gnutls_x509_crt_set_dn_by_oid (request, GNUTLS_OID_X520_COMMON_NAME,
2615 0, name, strlen (name));
2617 ret = gnutls_x509_crt_set_version (request, 3);
2619 ret = gnutls_rnd (GNUTLS_RND_NONCE, &serial, sizeof (serial));
2621 etime = time (NULL);
2622 tm_data = localtime (&etime);
2625 ret = gnutls_x509_crt_set_serial (request,
2629 ret = gnutls_x509_crt_set_activation_time (request,
2632 etime = mktime (tm_data);
2639 ret = gnutls_x509_crt_set_expiration_time (request,
2641 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Signing...\n");
2643 ret = gnutls_x509_crt_sign (request, proxy_ca.cert, proxy_ca.key);
2645 key_buf_size = sizeof (pgc->key);
2646 cert_buf_size = sizeof (pgc->cert);
2648 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Exporting certificate...\n");
2650 gnutls_x509_crt_export (request, GNUTLS_X509_FMT_PEM,
2651 pgc->cert, &cert_buf_size);
2653 gnutls_x509_privkey_export (proxy_ca.key, GNUTLS_X509_FMT_PEM,
2654 pgc->key, &key_buf_size);
2657 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Cleaning up\n");
2658 gnutls_x509_crt_deinit (request);
2666 * Accept policy for mhdaemons
2669 * @param addr the sockaddr
2670 * @param addrlen the sockaddr length
2671 * @return MHD_NO if sockaddr is wrong or #conns too high
2674 accept_cb (void* cls, const struct sockaddr *addr, socklen_t addrlen)
2676 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2677 "In MHD accept policy cb\n");
2681 if (addr->sa_family == AF_UNIX)
2685 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2686 "Connection accepted\n");
2693 * Adds a socket to an SSL MHD instance
2694 * It is important the the domain name is
2695 * correct. In most cases we need to start a new daemon
2697 * @param h the handle to add to a daemon
2698 * @param domain the domain the ssl daemon has to serve
2699 * @return MHD_YES on success
2702 add_handle_to_ssl_mhd (struct GNUNET_NETWORK_Handle *h, const char* domain)
2704 struct MhdHttpList *hd = NULL;
2705 struct ProxyGNSCertificate *pgc;
2706 struct NetworkHandleList *nh;
2708 for (hd = mhd_httpd_head; NULL != hd; hd = hd->next)
2709 if (0 == strcmp (hd->domain, domain))
2714 pgc = generate_gns_certificate (domain);
2716 hd = GNUNET_malloc (sizeof (struct MhdHttpList));
2717 hd->is_ssl = GNUNET_YES;
2718 strcpy (hd->domain, domain);
2719 hd->proxy_cert = pgc;
2722 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2723 "No previous SSL instance found... starting new one for %s\n",
2725 hd->daemon = MHD_start_daemon (MHD_USE_DEBUG
2727 #if HAVE_MHD_NO_LISTEN_SOCKET
2728 | MHD_USE_NO_LISTEN_SOCKET,
2734 &create_response, hd,
2735 #if !HAVE_MHD_NO_LISTEN_SOCKET
2736 MHD_OPTION_LISTEN_SOCKET, GNUNET_NETWORK_get_fd (mhd_unix_socket),
2738 MHD_OPTION_CONNECTION_LIMIT,
2739 MHD_MAX_CONNECTIONS,
2740 MHD_OPTION_CONNECTION_TIMEOUT, (unsigned int) 16,
2741 MHD_OPTION_NOTIFY_COMPLETED, NULL, NULL,
2742 MHD_OPTION_HTTPS_MEM_KEY, pgc->key,
2743 MHD_OPTION_HTTPS_MEM_CERT, pgc->cert,
2744 MHD_OPTION_URI_LOG_CALLBACK, &mhd_log_callback,
2748 GNUNET_assert (hd->daemon != NULL);
2749 hd->httpd_task = GNUNET_SCHEDULER_NO_TASK;
2751 GNUNET_CONTAINER_DLL_insert (mhd_httpd_head, mhd_httpd_tail, hd);
2754 nh = GNUNET_malloc (sizeof (struct NetworkHandleList));
2757 GNUNET_CONTAINER_DLL_insert (hd->socket_handles_head,
2758 hd->socket_handles_tail,
2761 return add_handle_to_mhd (h, hd->daemon);
2767 * Read data from incoming connection
2769 * @param cls the closure
2770 * @param tc the scheduler context
2773 do_read (void* cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
2775 struct Socks5Request *s5r = cls;
2776 struct socks5_client_hello *c_hello;
2777 struct socks5_server_hello *s_hello;
2778 struct socks5_client_request *c_req;
2779 struct socks5_server_response *s_resp;
2785 struct hostent *phost;
2787 struct sockaddr_in remote_addr;
2788 struct in_addr *r_sin_addr;
2790 struct NetworkHandleList *nh;
2792 s5r->rtask = GNUNET_SCHEDULER_NO_TASK;
2794 if ((NULL != tc->write_ready) &&
2795 (GNUNET_NETWORK_fdset_isset (tc->read_ready, s5r->sock)) &&
2796 (s5r->rbuf_len = GNUNET_NETWORK_socket_recv (s5r->sock, s5r->rbuf,
2797 sizeof (s5r->rbuf))))
2799 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2800 "Successfully read %d bytes from socket\n",
2805 if (s5r->rbuf_len != 0)
2806 GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING, "read");
2808 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "client disco!\n");
2810 if (s5r->fwdrtask != GNUNET_SCHEDULER_NO_TASK)
2811 GNUNET_SCHEDULER_cancel (s5r->fwdrtask);
2812 if (s5r->wtask != GNUNET_SCHEDULER_NO_TASK)
2813 GNUNET_SCHEDULER_cancel (s5r->wtask);
2814 if (s5r->fwdwtask != GNUNET_SCHEDULER_NO_TASK)
2815 GNUNET_SCHEDULER_cancel (s5r->fwdwtask);
2816 GNUNET_NETWORK_socket_close (s5r->remote_sock);
2817 GNUNET_NETWORK_socket_close (s5r->sock);
2822 if (s5r->state == SOCKS5_INIT)
2824 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2826 c_hello = (struct socks5_client_hello*)&s5r->rbuf;
2828 GNUNET_assert (c_hello->version == SOCKS_VERSION_5);
2830 s_hello = (struct socks5_server_hello*)&s5r->wbuf;
2831 s5r->wbuf_len = sizeof( struct socks5_server_hello );
2833 s_hello->version = c_hello->version;
2834 s_hello->auth_method = SOCKS_AUTH_NONE;
2836 /* Write response to client */
2837 s5r->wtask = GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL,
2841 s5r->rtask = GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL,
2845 s5r->state = SOCKS5_REQUEST;
2849 if (s5r->state == SOCKS5_REQUEST)
2851 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2852 "Processing SOCKS5 request\n");
2853 c_req = (struct socks5_client_request*)&s5r->rbuf;
2854 s_resp = (struct socks5_server_response*)&s5r->wbuf;
2855 //Only 10byte for ipv4 response!
2856 s5r->wbuf_len = 10;//sizeof (struct socks5_server_response);
2858 GNUNET_assert (c_req->addr_type == 3);
2860 dom_len = *((uint8_t*)(&(c_req->addr_type) + 1));
2861 memset(domain, 0, sizeof(domain));
2862 strncpy(domain, (char*)(&(c_req->addr_type) + 2), dom_len);
2863 req_port = *((uint16_t*)(&(c_req->addr_type) + 2 + dom_len));
2865 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2866 "Requested connection is %s:%d\n",
2870 if (is_tld (domain, GNUNET_GNS_TLD) ||
2871 is_tld (domain, GNUNET_GNS_TLD_ZKEY))
2873 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2874 "Requested connection is gnunet tld\n",
2878 if (ntohs(req_port) == HTTPS_PORT)
2880 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2881 "Requested connection is HTTPS\n");
2882 ret = add_handle_to_ssl_mhd ( s5r->sock, domain );
2884 else if (NULL != httpd)
2886 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2887 "Requested connection is HTTP\n");
2888 nh = GNUNET_malloc (sizeof (struct NetworkHandleList));
2891 GNUNET_CONTAINER_DLL_insert (mhd_httpd_head->socket_handles_head,
2892 mhd_httpd_head->socket_handles_tail,
2895 ret = add_handle_to_mhd ( s5r->sock, httpd );
2900 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2901 _("Failed to start HTTP server\n"));
2902 s_resp->version = 0x05;
2903 s_resp->reply = 0x01;
2904 s5r->cleanup = GNUNET_YES;
2905 s5r->cleanup_sock = GNUNET_YES;
2907 GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL,
2913 /* Signal success */
2914 s_resp->version = 0x05;
2915 s_resp->reply = 0x00;
2916 s_resp->reserved = 0x00;
2917 s_resp->addr_type = 0x01;
2919 s5r->cleanup = GNUNET_YES;
2920 s5r->cleanup_sock = GNUNET_NO;
2922 GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL,
2930 phost = (struct hostent*)gethostbyname (domain);
2933 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2934 "Resolve %s error!\n", domain );
2935 s_resp->version = 0x05;
2936 s_resp->reply = 0x01;
2937 s5r->cleanup = GNUNET_YES;
2938 s5r->cleanup_sock = GNUNET_YES;
2940 GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL,
2946 s5r->remote_sock = GNUNET_NETWORK_socket_create (AF_INET,
2949 r_sin_addr = (struct in_addr*)(phost->h_addr);
2950 remote_ip = r_sin_addr->s_addr;
2951 memset(&remote_addr, 0, sizeof(remote_addr));
2952 remote_addr.sin_family = AF_INET;
2953 #if HAVE_SOCKADDR_IN_SIN_LEN
2954 remote_addr.sin_len = sizeof (remote_addr);
2956 remote_addr.sin_addr.s_addr = remote_ip;
2957 remote_addr.sin_port = req_port;
2959 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2960 "target server: %s:%u\n", inet_ntoa(remote_addr.sin_addr),
2964 GNUNET_NETWORK_socket_connect ( s5r->remote_sock,
2965 (const struct sockaddr*)&remote_addr,
2966 sizeof (remote_addr)))
2967 && (errno != EINPROGRESS))
2969 GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING, "connect");
2970 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2971 "socket request error...\n");
2972 s_resp->version = 0x05;
2973 s_resp->reply = 0x01;
2975 GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL,
2982 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2983 "new remote connection\n");
2985 s_resp->version = 0x05;
2986 s_resp->reply = 0x00;
2987 s_resp->reserved = 0x00;
2988 s_resp->addr_type = 0x01;
2990 s5r->state = SOCKS5_DATA_TRANSFER;
2993 GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL,
2997 GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL,
3005 if (s5r->state == SOCKS5_DATA_TRANSFER)
3007 if ((s5r->remote_sock == NULL) || (s5r->rbuf_len == 0))
3009 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3010 "Closing connection to client\n");
3011 if (s5r->rtask != GNUNET_SCHEDULER_NO_TASK)
3012 GNUNET_SCHEDULER_cancel (s5r->rtask);
3013 if (s5r->fwdwtask != GNUNET_SCHEDULER_NO_TASK)
3014 GNUNET_SCHEDULER_cancel (s5r->fwdwtask);
3015 if (s5r->fwdrtask != GNUNET_SCHEDULER_NO_TASK)
3016 GNUNET_SCHEDULER_cancel (s5r->fwdrtask);
3017 if (s5r->fwdrtask != GNUNET_SCHEDULER_NO_TASK)
3018 GNUNET_SCHEDULER_cancel (s5r->fwdrtask);
3020 if (s5r->remote_sock != NULL)
3021 GNUNET_NETWORK_socket_close (s5r->remote_sock);
3022 GNUNET_NETWORK_socket_close (s5r->sock);
3027 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3028 "forwarding %d bytes from client\n", s5r->rbuf_len);
3031 GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL,
3033 &do_write_remote, s5r);
3035 if (s5r->fwdrtask == GNUNET_SCHEDULER_NO_TASK)
3038 GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL,
3040 &do_read_remote, s5r);
3050 * Accept new incoming connections
3052 * @param cls the closure
3053 * @param tc the scheduler context
3056 do_accept (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
3058 struct GNUNET_NETWORK_Handle *s;
3059 struct Socks5Request *s5r;
3061 ltask = GNUNET_SCHEDULER_NO_TASK;
3062 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
3065 ltask = GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL,
3069 s = GNUNET_NETWORK_socket_accept (lsock, NULL, NULL);
3073 GNUNET_log_strerror (GNUNET_ERROR_TYPE_ERROR, "accept");
3077 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3078 "Got an inbound connection, waiting for data\n");
3080 s5r = GNUNET_malloc (sizeof (struct Socks5Request));
3082 s5r->state = SOCKS5_INIT;
3083 s5r->wtask = GNUNET_SCHEDULER_NO_TASK;
3084 s5r->fwdwtask = GNUNET_SCHEDULER_NO_TASK;
3085 s5r->fwdrtask = GNUNET_SCHEDULER_NO_TASK;
3086 s5r->rtask = GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL,
3093 * Task run on shutdown
3095 * @param cls closure
3096 * @param tc task context
3099 do_shutdown (void *cls,
3100 const struct GNUNET_SCHEDULER_TaskContext *tc)
3103 struct MhdHttpList *hd;
3104 struct MhdHttpList *tmp_hd;
3105 struct NetworkHandleList *nh;
3106 struct NetworkHandleList *tmp_nh;
3107 struct ProxyCurlTask *ctask;
3108 struct ProxyCurlTask *ctask_tmp;
3109 struct ProxyUploadData *pdata;
3111 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
3112 "Shutting down...\n");
3114 gnutls_global_deinit ();
3116 if (NULL != local_gns_zone)
3117 GNUNET_free (local_gns_zone);
3118 if (NULL != local_private_zone)
3119 GNUNET_free (local_private_zone);
3120 if (NULL != local_shorten_zone)
3121 GNUNET_free (local_shorten_zone);
3123 if (GNUNET_SCHEDULER_NO_TASK != curl_download_task)
3125 GNUNET_SCHEDULER_cancel (curl_download_task);
3126 curl_download_task = GNUNET_SCHEDULER_NO_TASK;
3129 for (hd = mhd_httpd_head; hd != NULL; hd = tmp_hd)
3133 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3134 "Stopping daemon\n");
3136 if (GNUNET_SCHEDULER_NO_TASK != hd->httpd_task)
3138 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3139 "Stopping select task %d\n",
3141 GNUNET_SCHEDULER_cancel (hd->httpd_task);
3142 hd->httpd_task = GNUNET_SCHEDULER_NO_TASK;
3145 if (NULL != hd->daemon)
3147 MHD_stop_daemon (hd->daemon);
3151 for (nh = hd->socket_handles_head; nh != NULL; nh = tmp_nh)
3155 GNUNET_NETWORK_socket_close (nh->h);
3160 if (NULL != hd->proxy_cert)
3162 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3163 "Free certificate\n");
3164 GNUNET_free (hd->proxy_cert);
3170 for (ctask=ctasks_head; ctask != NULL; ctask=ctask_tmp)
3172 ctask_tmp = ctask->next;
3174 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3175 "Cleaning up cURL task\n");
3177 if (ctask->curl != NULL)
3178 curl_easy_cleanup (ctask->curl);
3180 if (NULL != ctask->headers)
3181 curl_slist_free_all (ctask->headers);
3182 if (NULL != ctask->resolver)
3183 curl_slist_free_all (ctask->resolver);
3185 if (NULL != ctask->response)
3186 MHD_destroy_response (ctask->response);
3188 pdata = ctask->upload_data_head;
3190 //FIXME free pdata here
3191 for (; pdata != NULL; pdata = ctask->upload_data_head)
3193 GNUNET_CONTAINER_DLL_remove (ctask->upload_data_head,
3194 ctask->upload_data_tail,
3196 GNUNET_free_non_null (pdata->filename);
3197 GNUNET_free_non_null (pdata->content_type);
3198 GNUNET_free_non_null (pdata->key);
3199 GNUNET_free_non_null (pdata->value);
3200 GNUNET_free (pdata);
3203 GNUNET_free (ctask);
3205 curl_multi_cleanup (curl_multi);
3207 GNUNET_GNS_disconnect (gns_handle);
3212 * Compiles a regex for us
3214 * @param re ptr to re struct
3215 * @param rt the expression to compile
3216 * @return 0 on success
3219 compile_regex (regex_t *re, const char* rt)
3224 status = regcomp (re, rt, REG_EXTENDED|REG_NEWLINE);
3227 regerror (status, re, err, 1024);
3228 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3229 "Regex error compiling '%s': %s\n", rt, err);
3237 * Loads the users local zone key
3239 * @return GNUNET_YES on success
3242 load_local_zone_key (const struct GNUNET_CONFIGURATION_Handle *cfg)
3245 struct GNUNET_CRYPTO_RsaPrivateKey *key = NULL;
3246 struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded pkey;
3247 struct GNUNET_CRYPTO_ShortHashCode *zone = NULL;
3248 struct GNUNET_CRYPTO_ShortHashAsciiEncoded zonename;
3250 if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_filename (cfg, "gns",
3251 "ZONEKEY", &keyfile))
3253 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3254 "Unable to load zone key config value!\n");
3258 if (GNUNET_NO == GNUNET_DISK_file_test (keyfile))
3260 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3261 "Unable to load zone key %s!\n", keyfile);
3262 GNUNET_free(keyfile);
3266 key = GNUNET_CRYPTO_rsa_key_create_from_file (keyfile);
3267 GNUNET_CRYPTO_rsa_key_get_public (key, &pkey);
3268 local_gns_zone = GNUNET_malloc (sizeof (struct GNUNET_CRYPTO_ShortHashCode));
3269 GNUNET_CRYPTO_short_hash(&pkey,
3270 sizeof(struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded),
3272 zone = local_gns_zone;
3273 GNUNET_CRYPTO_short_hash_to_enc (zone, &zonename);
3274 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3275 "Using zone: %s!\n", &zonename);
3276 GNUNET_CRYPTO_rsa_key_free(key);
3277 GNUNET_free(keyfile);
3280 if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_filename (cfg, "gns",
3281 "PRIVATE_ZONEKEY", &keyfile))
3283 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3284 "Unable to load private zone key config value!\n");
3287 if ((NULL != keyfile) && (GNUNET_NO == GNUNET_DISK_file_test (keyfile)))
3289 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3290 "Unable to load private zone key %s!\n", keyfile);
3291 GNUNET_free(keyfile);
3295 key = GNUNET_CRYPTO_rsa_key_create_from_file (keyfile);
3296 GNUNET_CRYPTO_rsa_key_get_public (key, &pkey);
3297 local_private_zone = GNUNET_malloc (sizeof (struct GNUNET_CRYPTO_ShortHashCode));
3298 GNUNET_CRYPTO_short_hash(&pkey,
3299 sizeof(struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded),
3300 local_private_zone);
3301 GNUNET_CRYPTO_short_hash_to_enc (zone, &zonename);
3302 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3303 "Using private zone: %s!\n", &zonename);
3304 GNUNET_CRYPTO_rsa_key_free(key);
3305 GNUNET_free(keyfile);
3309 if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_filename (cfg, "gns",
3310 "SHORTEN_ZONEKEY", &keyfile))
3312 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3313 "Unable to load shorten zone key config value!\n");
3316 if ((NULL != keyfile) && (GNUNET_NO == GNUNET_DISK_file_test (keyfile)))
3318 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3319 "Unable to load shorten zone key %s!\n", keyfile);
3320 GNUNET_free(keyfile);
3324 key = GNUNET_CRYPTO_rsa_key_create_from_file (keyfile);
3325 GNUNET_CRYPTO_rsa_key_get_public (key, &pkey);
3326 local_shorten_zone = GNUNET_malloc (sizeof (struct GNUNET_CRYPTO_ShortHashCode));
3327 GNUNET_CRYPTO_short_hash(&pkey,
3328 sizeof(struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded),
3329 local_shorten_zone);
3330 GNUNET_CRYPTO_short_hash_to_enc (zone, &zonename);
3331 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3332 "Using shorten zone: %s!\n", &zonename);
3333 GNUNET_CRYPTO_rsa_key_free(key);
3334 GNUNET_free(keyfile);
3341 * Main function that will be run
3343 * @param cls closure
3344 * @param args remaining command-line arguments
3345 * @param cfgfile name of the configuration file used (for saving, can be NULL!)
3346 * @param cfg configuration
3349 run (void *cls, char *const *args, const char *cfgfile,
3350 const struct GNUNET_CONFIGURATION_Handle *cfg)
3352 struct sockaddr_in sa;
3353 struct MhdHttpList *hd;
3354 char* cafile_cfg = NULL;
3356 #if !HAVE_MHD_NO_LISTEN_SOCKET
3358 char* proxy_sockfile;
3359 struct sockaddr_un mhd_unix_sock_addr;
3362 curl_multi = curl_multi_init ();
3364 if (NULL == curl_multi)
3366 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3367 "Failed to create cURL multo handle!\n");
3371 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
3373 cafile = cafile_opt;
3376 if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_filename (cfg, "gns-proxy",
3380 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3381 "Unable to load proxy CA config value!\n");
3382 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3383 "No proxy CA provided!\n");
3386 cafile = cafile_cfg;
3388 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3389 "Using %s as CA\n", cafile);
3391 gnutls_global_init ();
3392 gnutls_x509_crt_init (&proxy_ca.cert);
3393 gnutls_x509_privkey_init (&proxy_ca.key);
3395 if ( (GNUNET_OK != load_cert_from_file (proxy_ca.cert, cafile)) ||
3396 (GNUNET_OK != load_key_from_file (proxy_ca.key, cafile)) )
3398 // FIXME: release resources...
3402 GNUNET_free_non_null (cafile_cfg);
3404 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3405 "Loading Template\n");
3407 compile_regex (&re_dotplus, (char*) RE_A_HREF);
3409 gns_handle = GNUNET_GNS_connect (cfg);
3411 if (GNUNET_NO == load_local_zone_key (cfg))
3413 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3414 "Unable to load zone!\n");
3418 if (NULL == gns_handle)
3420 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3421 "Unable to connect to GNS!\n");
3425 memset (&sa, 0, sizeof (sa));
3426 sa.sin_family = AF_INET;
3427 sa.sin_port = htons (port);
3428 #if HAVE_SOCKADDR_IN_SIN_LEN
3429 sa.sin_len = sizeof (sa);
3432 lsock = GNUNET_NETWORK_socket_create (AF_INET,
3436 if ((NULL == lsock) ||
3438 GNUNET_NETWORK_socket_bind (lsock, (const struct sockaddr *) &sa,
3441 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3442 "Failed to create listen socket bound to `%s'",
3443 GNUNET_a2s ((const struct sockaddr *) &sa, sizeof (sa)));
3445 GNUNET_NETWORK_socket_close (lsock);
3449 if (GNUNET_OK != GNUNET_NETWORK_socket_listen (lsock, 5))
3451 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3452 "Failed to listen on socket bound to `%s'",
3453 GNUNET_a2s ((const struct sockaddr *) &sa, sizeof (sa)));
3457 ltask = GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL,
3458 lsock, &do_accept, NULL);
3463 if (0 != curl_global_init (CURL_GLOBAL_WIN32))
3465 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3466 "cURL global init failed!\n");
3470 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3471 "Proxy listens on port %u\n",
3474 mhd_httpd_head = NULL;
3475 mhd_httpd_tail = NULL;
3476 total_mhd_connections = 0;
3477 #ifndef HAVE_MHD_NO_LISTEN_SOCKET
3478 if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_filename (cfg, "gns-proxy",
3482 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3483 "Specify PROXY_UNIXPATH in gns-proxy config section!\n");
3487 mhd_unix_socket = GNUNET_NETWORK_socket_create (AF_UNIX,
3491 if (NULL == mhd_unix_socket)
3493 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3494 "Unable to create unix domain socket!\n");
3498 mhd_unix_sock_addr.sun_family = AF_UNIX;
3499 strcpy (mhd_unix_sock_addr.sun_path, proxy_sockfile);
3502 mhd_unix_sock_addr.sun_path[0] = '\0';
3504 #if HAVE_SOCKADDR_IN_SIN_LEN
3505 mhd_unix_sock_addr.sun_len = (u_char) sizeof (struct sockaddr_un);
3508 len = strlen (proxy_sockfile) + sizeof(AF_UNIX);
3510 GNUNET_free (proxy_sockfile);
3512 if (GNUNET_OK != GNUNET_NETWORK_socket_bind (mhd_unix_socket,
3513 (struct sockaddr*)&mhd_unix_sock_addr,
3516 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3517 "Unable to bind unix domain socket!\n");
3521 if (GNUNET_OK != GNUNET_NETWORK_socket_listen (mhd_unix_socket,
3524 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3525 "Unable to listen on unix domain socket!\n");
3530 hd = GNUNET_malloc (sizeof (struct MhdHttpList));
3531 hd->is_ssl = GNUNET_NO;
3532 strcpy (hd->domain, "");
3533 httpd = MHD_start_daemon (MHD_USE_DEBUG
3534 #if HAVE_MHD_NO_LISTEN_SOCKET
3535 | MHD_USE_NO_LISTEN_SOCKET,
3538 , 4444, //Dummy port
3541 &create_response, hd,
3542 #if !HAVE_MHD_NO_LISTEN_SOCKET
3543 MHD_OPTION_LISTEN_SOCKET, GNUNET_NETWORK_get_fd (mhd_unix_socket),
3545 MHD_OPTION_CONNECTION_LIMIT, MHD_MAX_CONNECTIONS,
3546 MHD_OPTION_CONNECTION_TIMEOUT, (unsigned int) 16,
3547 MHD_OPTION_NOTIFY_COMPLETED,
3549 MHD_OPTION_URI_LOG_CALLBACK, &mhd_log_callback, NULL,
3552 GNUNET_assert (httpd != NULL);
3554 hd->httpd_task = GNUNET_SCHEDULER_NO_TASK;
3556 GNUNET_CONTAINER_DLL_insert (mhd_httpd_head, mhd_httpd_tail, hd);
3560 GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL,
3561 &do_shutdown, NULL);
3567 * The main function for gnunet-gns-proxy.
3569 * @param argc number of arguments from the command line
3570 * @param argv command line arguments
3571 * @return 0 ok, 1 on error
3574 main (int argc, char *const *argv)
3576 static const struct GNUNET_GETOPT_CommandLineOption options[] = {
3578 gettext_noop ("listen on specified port"), 1,
3579 &GNUNET_GETOPT_set_string, &port},
3580 {'a', "authority", NULL,
3581 gettext_noop ("pem file to use as CA"), 1,
3582 &GNUNET_GETOPT_set_string, &cafile_opt},
3583 GNUNET_GETOPT_OPTION_END
3588 if (GNUNET_OK != GNUNET_STRINGS_get_utf8_args (argc, argv, &argc, &argv))
3592 GNUNET_log_setup ("gnunet-gns-proxy", "WARNING", NULL);
3595 GNUNET_PROGRAM_run (argc, argv, "gnunet-gns-proxy",
3596 _("GNUnet GNS proxy"),
3598 &run, NULL)) ? 0 : 1;
3599 GNUNET_free_non_null ((char*)argv);