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.
21 * @author Martin Schanzenbach
22 * @file src/gns/gnunet-gns-proxy.c
23 * @brief HTTP(S) proxy that rewrites URIs and fakes certificats to make GADS work
24 * with legacy browsers
27 #include <microhttpd.h>
28 #include <curl/curl.h>
29 #include <gnutls/gnutls.h>
30 #include <gnutls/x509.h>
31 #include <gnutls/abstract.h>
32 #include <gnutls/crypto.h>
34 #include "gnunet_util_lib.h"
35 #include "gnunet_gns_service.h"
36 #include "gns_proxy_proto.h"
39 #define HAVE_MHD_NO_LISTEN_SOCKET (MHD_VERSION >= 0x00091401)
41 #define GNUNET_GNS_PROXY_PORT 7777
42 #define MHD_MAX_CONNECTIONS 300
43 #define MAX_HTTP_URI_LENGTH 2048
44 #define POSTBUFFERSIZE 4096
46 /* MHD/cURL defines */
54 #define HTML_HDR_CONTENT "Content-Type: text/html"
56 /* buffer padding for proper RE matching */
57 #define CURL_BUF_PADDING 1000
60 //#define RE_DOTPLUS "<a href=\"http://(([A-Za-z]+[.])+)([+])"
61 #define RE_A_HREF "href=\"https?://(([A-Za-z0-9]+[.])+)([+]|[a-z]+)"
62 #define RE_N_MATCHES 4
64 /* The usual suspects */
66 #define HTTPS_PORT 443
70 * A structure for CA cert/key
75 gnutls_x509_crt_t cert;
78 gnutls_x509_privkey_t key;
81 #define MAX_PEM_SIZE (10 * 1024)
84 * Structure for GNS certificates
86 struct ProxyGNSCertificate
88 /* The certificate as PEM */
89 char cert[MAX_PEM_SIZE];
91 /* The private key as PEM */
92 char key[MAX_PEM_SIZE];
97 * A structure for socks requests
101 /* The client socket */
102 struct GNUNET_NETWORK_Handle *sock;
104 /* The server socket */
105 struct GNUNET_NETWORK_Handle *remote_sock;
107 /* The socks state */
110 /* Client socket read task */
111 GNUNET_SCHEDULER_TaskIdentifier rtask;
113 /* Server socket read task */
114 GNUNET_SCHEDULER_TaskIdentifier fwdrtask;
116 /* Client socket write task */
117 GNUNET_SCHEDULER_TaskIdentifier wtask;
119 /* Server socket write task */
120 GNUNET_SCHEDULER_TaskIdentifier fwdwtask;
128 /* Length of data in read buffer */
129 unsigned int rbuf_len;
131 /* Length of data in write buffer */
132 unsigned int wbuf_len;
134 /* This handle is scheduled for cleanup? */
137 /* Shall we close the client socket on cleanup? */
142 * DLL for Network Handles
144 struct NetworkHandleList
147 struct NetworkHandleList *next;
150 struct NetworkHandleList *prev;
153 struct GNUNET_NETWORK_Handle *h;
157 * A structure for all running Httpds
162 struct MhdHttpList *prev;
165 struct MhdHttpList *next;
167 /* is this an ssl daemon? */
170 /* the domain name to server (only important for SSL) */
173 /* The daemon handle */
174 struct MHD_Daemon *daemon;
176 /* Optional proxy certificate used */
177 struct ProxyGNSCertificate *proxy_cert;
180 GNUNET_SCHEDULER_TaskIdentifier httpd_task;
182 /* Handles associated with this daemon */
183 struct NetworkHandleList *socket_handles_head;
185 /* Handles associated with this daemon */
186 struct NetworkHandleList *socket_handles_tail;
190 * A structure for MHD<->cURL streams
195 struct ProxyCurlTask *prev;
198 struct ProxyCurlTask *next;
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;
225 struct MHD_Connection *connection;
228 size_t put_read_offset;
229 size_t put_read_size;
232 struct MHD_PostProcessor *post_handler;
235 struct ProxyUploadData *upload_data_head;
236 struct ProxyUploadData *upload_data_tail;
238 /* the type of POST encoding */
241 struct curl_httppost *httppost;
243 struct curl_httppost *httppost_last;
245 /* Number of bytes in buffer */
246 unsigned int bytes_in_buffer;
249 GNUNET_SCHEDULER_TaskIdentifier pp_task;
252 struct ProxyREMatch *pp_match_head;
255 struct ProxyREMatch *pp_match_tail;
257 /* The associated daemon list entry */
258 struct MhdHttpList *mhd;
260 /* The associated response */
261 struct MHD_Response *response;
264 struct ProxySetCookieHeader *set_cookies_head;
267 struct ProxySetCookieHeader *set_cookies_tail;
269 /* The authority of the corresponding host (site of origin) */
272 /* The hostname (Host header field) */
275 /* The LEgacy HOstname (can be empty) */
281 /* The buffer status (BUF_WAIT_FOR_CURL or BUF_WAIT_FOR_MHD) */
282 enum BufferStatus buf_status;
284 /* connection status */
287 /* is curl running? */
293 /* Already accepted */
296 /* Indicates wheather the download is in progress */
297 int download_in_progress;
299 /* Indicates wheather the download was successful */
300 int download_is_finished;
302 /* Indicates wheather the download failed */
305 /* Indicates wheather we need to parse HTML */
308 /* Indicates wheather we are postprocessing the HTML right now */
309 int is_postprocessing;
311 /* Indicates wheather postprocessing has finished */
321 * Struct for RE matches in postprocessing of HTML
326 struct ProxyREMatch *next;
329 struct ProxyREMatch *prev;
331 /* start of match in buffer */
334 /* end of match in buffer */
337 /* associated proxycurltask */
338 struct ProxyCurlTask *ctask;
347 struct GNUNET_GNS_ShortenRequest *shorten_task;
358 * Struct for set-cookies
360 struct ProxySetCookieHeader
363 struct ProxySetCookieHeader *next;
366 struct ProxySetCookieHeader *prev;
373 * Post data structure
375 struct ProxyUploadData
378 struct ProxyUploadData *next;
381 struct ProxyUploadData *prev;
389 size_t content_length;
402 /* The port the proxy is running on (default 7777) */
403 static unsigned long port = GNUNET_GNS_PROXY_PORT;
405 /* The CA file (pem) to use for the proxy CA */
406 static char* cafile_opt;
408 /* The listen socket of the proxy */
409 static struct GNUNET_NETWORK_Handle *lsock;
411 /* The listen task ID */
412 static GNUNET_SCHEDULER_TaskIdentifier ltask;
414 /* The cURL download task */
415 static GNUNET_SCHEDULER_TaskIdentifier curl_download_task;
417 /* The non SSL httpd daemon handle */
418 static struct MHD_Daemon *httpd;
420 /* Number of current mhd connections */
421 static unsigned int total_mhd_connections;
423 /* The cURL multi handle */
424 static CURLM *curl_multi;
426 /* Handle to the GNS service */
427 static struct GNUNET_GNS_Handle *gns_handle;
429 /* DLL for ProxyCurlTasks */
430 static struct ProxyCurlTask *ctasks_head;
432 /* DLL for ProxyCurlTasks */
433 static struct ProxyCurlTask *ctasks_tail;
435 /* DLL for http daemons */
436 static struct MhdHttpList *mhd_httpd_head;
438 /* DLL for http daemons */
439 static struct MhdHttpList *mhd_httpd_tail;
441 /* Handle to the regex for dotplus (.+) replacement in HTML */
442 static regex_t re_dotplus;
444 /* The users local GNS zone hash */
445 static struct GNUNET_CRYPTO_ShortHashCode *local_gns_zone;
447 /* The users local private zone */
448 static struct GNUNET_CRYPTO_ShortHashCode *local_private_zone;
450 /* The users local shorten zone */
451 static struct GNUNET_CRYPTO_ShortHashCode *local_shorten_zone;
453 /* The CA for SSL certificate generation */
454 static struct ProxyCA proxy_ca;
456 /* UNIX domain socket for mhd */
457 #if !HAVE_MHD_NO_LISTEN_SOCKET
458 static struct GNUNET_NETWORK_Handle *mhd_unix_socket;
461 /* Shorten zone private key */
462 static struct GNUNET_CRYPTO_RsaPrivateKey *shorten_zonekey;
466 * Checks if name is in tld
468 * @param name the name to check
469 * @param tld the TLD to check for (must NOT begin with ".")
470 * @return GNUNET_YES or GNUNET_NO
473 is_tld (const char* name, const char* tld)
475 size_t name_len = strlen (name);
476 size_t tld_len = strlen (tld);
478 GNUNET_break ('.' != tld[0]);
479 return ( (tld_len < name_len) &&
480 ( ('.' == name[name_len - tld_len - 1]) || (name_len == tld_len) ) &&
482 name + (name_len - tld_len),
488 * convert integer to string representation
491 * @return the character
494 i_to_hexchar (unsigned char i)
496 static char hexmap[] = "0123456789abcdef";
498 GNUNET_assert (sizeof (hexmap) > (i & 15));
499 return hexmap[i & 15];
504 con_post_data_iter (void *cls,
505 enum MHD_ValueKind kind,
507 const char *filename,
508 const char *content_type,
509 const char *transfer_encoding,
514 struct ProxyCurlTask* ctask = cls;
515 struct ProxyUploadData* pdata;
519 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
520 "Got POST data (file: %s, content type: %s): '%s=%.*s' at offset %llu size %llu\n",
521 filename, content_type,
522 key, (int) size, data,
523 (unsigned long long) off,
524 (unsigned long long) size);
525 GNUNET_assert (NULL != ctask->post_type);
527 if (0 == strcasecmp (MHD_HTTP_POST_ENCODING_MULTIPART_FORMDATA,
530 ctask->is_httppost = GNUNET_YES;
534 pdata = GNUNET_malloc (sizeof (struct ProxyUploadData));
535 pdata->key = GNUNET_strdup (key);
537 if (NULL != filename)
538 pdata->filename = GNUNET_strdup (filename);
539 if (NULL != content_type)
540 pdata->content_type = GNUNET_strdup (content_type);
541 pdata->value = GNUNET_malloc (size);
542 pdata->total_bytes = size;
543 memcpy (pdata->value, data, size);
544 GNUNET_CONTAINER_DLL_insert_tail (ctask->upload_data_head,
545 ctask->upload_data_tail,
548 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
549 "Copied %llu bytes of POST Data\n",
550 (unsigned long long) size);
554 pdata = ctask->upload_data_tail;
555 new_value = GNUNET_malloc (size + pdata->total_bytes);
556 memcpy (new_value, pdata->value, pdata->total_bytes);
557 memcpy (new_value+off, data, size);
558 GNUNET_free (pdata->value);
559 pdata->value = new_value;
560 pdata->total_bytes += size;
565 if (0 != strcasecmp (MHD_HTTP_POST_ENCODING_FORM_URLENCODED,
571 ctask->is_httppost = GNUNET_NO;
573 if (NULL != ctask->curl)
574 curl_easy_pause (ctask->curl, CURLPAUSE_CONT);
578 enc = curl_easy_escape (ctask->curl, key, 0);
585 pdata = GNUNET_malloc (sizeof (struct ProxyUploadData));
586 pdata->value = GNUNET_malloc (strlen (enc) + 3);
587 if (NULL != ctask->upload_data_head)
589 pdata->value[0] = '&';
590 memcpy (pdata->value+1, enc, strlen (enc));
593 memcpy (pdata->value, enc, strlen (enc));
594 pdata->value[strlen (pdata->value)] = '=';
595 pdata->bytes_left = strlen (pdata->value);
596 pdata->total_bytes = pdata->bytes_left;
599 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
600 "Escaped POST key: '%s'\n",
603 GNUNET_CONTAINER_DLL_insert_tail (ctask->upload_data_head,
604 ctask->upload_data_tail,
609 enc = curl_easy_escape (ctask->curl, data, 0);
615 pdata = GNUNET_malloc (sizeof (struct ProxyUploadData));
616 pdata->value = GNUNET_malloc (strlen (enc) + 1);
617 memcpy (pdata->value, enc, strlen (enc));
618 pdata->bytes_left = strlen (pdata->value);
619 pdata->total_bytes = pdata->bytes_left;
622 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
623 "Escaped POST value: '%s'\n",
626 GNUNET_CONTAINER_DLL_insert_tail (ctask->upload_data_head,
627 ctask->upload_data_tail,
634 * Read HTTP request header field 'Host'
636 * @param cls buffer to write to
637 * @param kind value kind
638 * @param key field key
639 * @param value field value
640 * @return MHD_NO when Host found
643 con_val_iter (void *cls,
644 enum MHD_ValueKind kind,
648 struct ProxyCurlTask *ctask = cls;
649 char* buf = ctask->host;
655 if (0 == strcmp ("Host", key))
657 port = strchr (value, ':');
660 strncpy (buf, value, port-value);
662 if ((1 != sscanf (port, "%u", &uport)) ||
663 (uport > UINT16_MAX) ||
665 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
666 "Unable to parse port!\n");
668 ctask->port = (uint16_t) uport;
675 if (0 == strcmp (MHD_HTTP_HEADER_ACCEPT_ENCODING, key))
680 if (0 == strcasecmp (MHD_HTTP_HEADER_CONTENT_TYPE,
683 if (0 == strncasecmp (value,
684 MHD_HTTP_POST_ENCODING_FORM_URLENCODED,
685 strlen (MHD_HTTP_POST_ENCODING_FORM_URLENCODED)))
686 ctask->post_type = MHD_HTTP_POST_ENCODING_FORM_URLENCODED;
687 else if (0 == strncasecmp (value,
688 MHD_HTTP_POST_ENCODING_MULTIPART_FORMDATA,
689 strlen (MHD_HTTP_POST_ENCODING_MULTIPART_FORMDATA)))
690 ctask->post_type = MHD_HTTP_POST_ENCODING_MULTIPART_FORMDATA;
692 ctask->post_type = NULL;
696 cstr = GNUNET_malloc (strlen (key) + strlen (hdr_val) + 3);
697 GNUNET_snprintf (cstr, strlen (key) + strlen (hdr_val) + 3,
698 "%s: %s", key, hdr_val);
700 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
701 "Client Header: %s\n", cstr);
703 ctask->headers = curl_slist_append (ctask->headers, cstr);
711 * Callback for MHD response
714 * @param pos in buffer
716 * @param max space in buffer
717 * @return number of bytes written
720 mhd_content_cb (void *cls,
727 * Check HTTP response header for mime
729 * @param buffer curl buffer
730 * @param size curl blocksize
731 * @param nmemb curl blocknumber
733 * @return size of read bytes
736 curl_check_hdr (void *buffer, size_t size, size_t nmemb, void *cls)
738 size_t bytes = size * nmemb;
739 struct ProxyCurlTask *ctask = cls;
740 int html_mime_len = strlen (HTML_HDR_CONTENT);
741 int cookie_hdr_len = strlen (MHD_HTTP_HEADER_SET_COOKIE);
742 char hdr_mime[html_mime_len+1];
743 char hdr_generic[bytes+1];
744 char new_cookie_hdr[bytes+strlen (ctask->leho)+1];
745 char new_location[MAX_HTTP_URI_LENGTH+500];
755 char cors_hdr[strlen (ctask->leho) + strlen ("https://")];
757 if (NULL == ctask->response)
759 /* FIXME: get total size from curl (if available) */
760 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
761 "Creating response for %s\n", ctask->url);
762 ctask->response = MHD_create_response_from_callback (MHD_SIZE_UNKNOWN,
763 sizeof (ctask->buffer),
768 /* if we have a leho add a CORS header */
769 if (0 != strcmp ("", ctask->leho))
771 /* We could also allow ssl and http here */
772 if (ctask->mhd->is_ssl)
773 sprintf (cors_hdr, "https://%s", ctask->leho);
775 sprintf (cors_hdr, "http://%s", ctask->leho);
777 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
778 "MHD: Adding CORS header field %s\n",
781 if (GNUNET_NO == MHD_add_response_header (ctask->response,
782 "Access-Control-Allow-Origin",
785 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
786 "MHD: Error adding CORS header field %s\n",
790 ctask->ready_to_queue = GNUNET_YES;
793 if (html_mime_len <= bytes)
795 memcpy (hdr_mime, buffer, html_mime_len);
796 hdr_mime[html_mime_len] = '\0';
798 if (0 == strcmp (hdr_mime, HTML_HDR_CONTENT))
800 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
801 "Got HTML HTTP response header\n");
802 ctask->parse_content = GNUNET_YES;
806 if (cookie_hdr_len > bytes)
809 memcpy (hdr_generic, buffer, bytes);
810 hdr_generic[bytes] = '\0';
812 if ('\n' == hdr_generic[bytes-1])
813 hdr_generic[bytes-1] = '\0';
815 if (hdr_generic[bytes-2] == '\r')
816 hdr_generic[bytes-2] = '\0';
818 if (0 == memcmp (hdr_generic,
819 MHD_HTTP_HEADER_SET_COOKIE,
822 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
823 "Looking for cookie in: `%s'\n", hdr_generic);
824 ndup = GNUNET_strdup (hdr_generic+cookie_hdr_len+1);
825 memset (new_cookie_hdr, 0, sizeof (new_cookie_hdr));
826 for (tok = strtok (ndup, ";"); tok != NULL; tok = strtok (NULL, ";"))
828 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
829 "Got Cookie token: %s\n", tok);
830 //memcpy (new_cookie_hdr+offset, tok, strlen (tok));
831 if (0 == memcmp (tok, " domain", strlen (" domain")))
833 cookie_domain = tok + strlen (" domain") + 1;
835 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
836 "Got Set-Cookie Domain: %s\n", cookie_domain);
838 if (strlen (cookie_domain) < strlen (ctask->leho))
840 delta_cdomain = strlen (ctask->leho) - strlen (cookie_domain);
841 if (0 == strcmp (cookie_domain, ctask->leho + (delta_cdomain)))
843 GNUNET_snprintf (new_cookie_hdr+offset,
844 sizeof (new_cookie_hdr),
845 " domain=%s", ctask->authority);
846 offset += strlen (" domain=") + strlen (ctask->authority);
847 new_cookie_hdr[offset] = ';';
852 else if (strlen (cookie_domain) == strlen (ctask->leho))
854 if (0 == strcmp (cookie_domain, ctask->leho))
856 GNUNET_snprintf (new_cookie_hdr+offset,
857 sizeof (new_cookie_hdr),
858 " domain=%s", ctask->host);
859 offset += strlen (" domain=") + strlen (ctask->host);
860 new_cookie_hdr[offset] = ';';
865 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
866 "Cookie domain invalid\n");
870 memcpy (new_cookie_hdr+offset, tok, strlen (tok));
871 offset += strlen (tok);
872 new_cookie_hdr[offset] = ';';
878 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
879 "Got Set-Cookie HTTP header %s\n", new_cookie_hdr);
881 if (GNUNET_NO == MHD_add_response_header (ctask->response,
882 MHD_HTTP_HEADER_SET_COOKIE,
885 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
886 "MHD: Error adding set-cookie header field %s\n",
887 hdr_generic+cookie_hdr_len+1);
892 ndup = GNUNET_strdup (hdr_generic);
893 hdr_type = strtok (ndup, ":");
895 if (NULL == hdr_type)
901 hdr_val = strtok (NULL, "");
911 if (0 == strcasecmp (MHD_HTTP_HEADER_LOCATION, hdr_type))
913 if (ctask->mhd->is_ssl)
915 sprintf (leho_host, "https://%s", ctask->leho);
916 sprintf (real_host, "https://%s", ctask->host);
920 sprintf (leho_host, "http://%s", ctask->leho);
921 sprintf (real_host, "http://%s", ctask->host);
924 if (0 == memcmp (leho_host, hdr_val, strlen (leho_host)))
926 sprintf (new_location, "%s%s", real_host, hdr_val+strlen (leho_host));
927 hdr_val = new_location;
931 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
932 "Trying to set %s: %s\n",
935 if (GNUNET_NO == MHD_add_response_header (ctask->response,
939 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
940 "MHD: Error adding %s header field %s\n",
952 * @param hd a http daemon list entry
955 run_httpd (struct MhdHttpList *hd);
967 * Task run whenever HTTP server operations are pending.
970 * @param tc sched context
974 const struct GNUNET_SCHEDULER_TaskContext *tc);
978 run_mhd_now (struct MhdHttpList *hd)
980 if (GNUNET_SCHEDULER_NO_TASK != hd->httpd_task)
982 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
983 "MHD: killing old task\n");
984 GNUNET_SCHEDULER_cancel (hd->httpd_task);
986 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
987 "MHD: Scheduling MHD now\n");
988 hd->httpd_task = GNUNET_SCHEDULER_add_now (&do_httpd, hd);
993 * Ask cURL for the select sets and schedule download
996 curl_download_prepare (void);
1000 * Callback to free content
1002 * @param cls content to free
1003 * @param tc task context
1006 mhd_content_free (void *cls,
1007 const struct GNUNET_SCHEDULER_TaskContext *tc)
1009 struct ProxyCurlTask *ctask = cls;
1010 struct ProxyUploadData *pdata;
1012 GNUNET_assert (NULL == ctask->pp_match_head);
1013 if (NULL != ctask->headers)
1014 curl_slist_free_all (ctask->headers);
1016 if (NULL != ctask->headers)
1017 curl_slist_free_all (ctask->resolver);
1019 if (NULL != ctask->response)
1020 MHD_destroy_response (ctask->response);
1022 if (NULL != ctask->post_handler)
1023 MHD_destroy_post_processor (ctask->post_handler);
1025 if (GNUNET_SCHEDULER_NO_TASK != ctask->pp_task)
1026 GNUNET_SCHEDULER_cancel (ctask->pp_task);
1028 for (pdata = ctask->upload_data_head; NULL != pdata; pdata = ctask->upload_data_head)
1030 GNUNET_CONTAINER_DLL_remove (ctask->upload_data_head,
1031 ctask->upload_data_tail,
1033 GNUNET_free_non_null (pdata->filename);
1034 GNUNET_free_non_null (pdata->content_type);
1035 GNUNET_free_non_null (pdata->key);
1036 GNUNET_free_non_null (pdata->value);
1037 GNUNET_free (pdata);
1039 GNUNET_free (ctask);
1044 * Callback for MHD response
1046 * @param cls closure
1047 * @param pos in buffer
1049 * @param max space in buffer
1050 * @return number of bytes written
1053 mhd_content_cb (void *cls,
1058 struct ProxyCurlTask *ctask = cls;
1059 struct ProxyREMatch *re_match;
1061 size_t bytes_to_copy = ctask->buffer_write_ptr - ctask->buffer_read_ptr;
1063 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1064 "MHD: content cb for %s. To copy: %u\n",
1065 ctask->url, (unsigned int) bytes_to_copy);
1066 if ((GNUNET_YES == ctask->download_is_finished) &&
1067 (GNUNET_NO == ctask->download_error) &&
1068 (0 == bytes_to_copy))
1070 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
1071 "MHD: sending response for %s\n", ctask->url);
1072 ctask->download_in_progress = GNUNET_NO;
1073 run_mhd_now (ctask->mhd);
1074 GNUNET_SCHEDULER_add_now (&mhd_content_free, ctask);
1075 total_mhd_connections--;
1076 return MHD_CONTENT_READER_END_OF_STREAM;
1079 if ((GNUNET_YES == ctask->download_error) &&
1080 (GNUNET_YES == ctask->download_is_finished) &&
1081 (0 == bytes_to_copy))
1083 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
1084 "MHD: sending error response\n");
1085 ctask->download_in_progress = GNUNET_NO;
1086 run_mhd_now (ctask->mhd);
1087 GNUNET_SCHEDULER_add_now (&mhd_content_free, ctask);
1088 total_mhd_connections--;
1089 return MHD_CONTENT_READER_END_WITH_ERROR;
1092 if ( ctask->buf_status == BUF_WAIT_FOR_CURL )
1096 for (re_match = ctask->pp_match_head; NULL != re_match; re_match = ctask->pp_match_head)
1098 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1099 "MHD: Processing PP %s\n",
1100 re_match->hostname);
1101 bytes_to_copy = re_match->start - ctask->buffer_read_ptr;
1102 if (bytes_to_copy+copied > max)
1104 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1105 "MHD: buffer in response too small for %u. Using available space (%d). (%s)\n",
1106 (unsigned int) bytes_to_copy,
1109 memcpy (buf+copied, ctask->buffer_read_ptr, max-copied);
1110 ctask->buffer_read_ptr += max-copied;
1112 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1113 "MHD: copied %d bytes\n", (int) copied);
1117 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1118 "MHD: copying %u bytes to mhd response at offset %d\n",
1119 (unsigned int) bytes_to_copy, ctask->buffer_read_ptr);
1120 memcpy (buf+copied, ctask->buffer_read_ptr, bytes_to_copy);
1121 copied += bytes_to_copy;
1123 if (GNUNET_NO == re_match->done)
1125 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1126 "MHD: Waiting for PP of %s\n", re_match->hostname);
1127 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1128 "MHD: copied %d bytes\n", (int) copied);
1129 ctask->buffer_read_ptr += bytes_to_copy;
1133 if (strlen (re_match->result) > (max - copied))
1135 //FIXME partially copy domain here
1136 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1137 "MHD: buffer in response too small for %s! (%s)\n",
1140 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1141 "MHD: copied %d bytes\n", (int) copied);
1142 ctask->buffer_read_ptr += bytes_to_copy;
1146 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1147 "MHD: Adding PP result %s to buffer\n",
1149 memcpy (buf + copied, re_match->result, strlen (re_match->result));
1150 copied += strlen (re_match->result);
1151 ctask->buffer_read_ptr = re_match->end;
1152 GNUNET_CONTAINER_DLL_remove (ctask->pp_match_head,
1153 ctask->pp_match_tail,
1155 GNUNET_free (re_match);
1158 bytes_to_copy = ctask->buffer_write_ptr - ctask->buffer_read_ptr;
1160 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1161 "MHD: copied: %d left: %u, space left in buf: %d\n",
1163 (unsigned int) bytes_to_copy, (int) (max - copied));
1165 if (GNUNET_NO == ctask->download_is_finished)
1167 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1168 "MHD: Purging buffer\n");
1169 memmove (ctask->buffer, ctask->buffer_read_ptr, bytes_to_copy);
1170 ctask->buffer_read_ptr = ctask->buffer;
1171 ctask->buffer_write_ptr = ctask->buffer + bytes_to_copy;
1172 ctask->buffer[bytes_to_copy] = '\0';
1175 if (bytes_to_copy + copied > max)
1176 bytes_to_copy = max - copied;
1177 memcpy (buf+copied, ctask->buffer_read_ptr, bytes_to_copy);
1178 ctask->buffer_read_ptr += bytes_to_copy;
1179 copied += bytes_to_copy;
1180 ctask->buf_status = BUF_WAIT_FOR_CURL;
1182 if (NULL != ctask->curl)
1183 curl_easy_pause (ctask->curl, CURLPAUSE_CONT);
1185 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1186 "MHD: copied %d bytes\n", (int) copied);
1187 run_mhd_now (ctask->mhd);
1193 * Shorten result callback
1195 * @param cls the proxycurltask
1196 * @param short_name the shortened name (NULL on error)
1199 process_shorten (void* cls, const char* short_name)
1201 struct ProxyREMatch *re_match = cls;
1202 char result[sizeof (re_match->result)];
1204 if (NULL == short_name)
1206 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1207 "PP: Unable to shorten %s\n",
1208 re_match->hostname);
1209 GNUNET_CONTAINER_DLL_remove (re_match->ctask->pp_match_head,
1210 re_match->ctask->pp_match_tail,
1212 GNUNET_free (re_match);
1216 if (0 == strcmp (short_name, re_match->ctask->leho))
1217 strcpy (result, re_match->ctask->host);
1219 strcpy (result, short_name);
1221 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1222 "PP: Shorten %s -> %s\n",
1226 if (re_match->is_ssl)
1227 sprintf (re_match->result, "href=\"https://%s", result);
1229 sprintf (re_match->result, "href=\"http://%s", result);
1231 re_match->done = GNUNET_YES;
1232 run_mhd_now (re_match->ctask->mhd);
1237 * Postprocess data in buffer. From read ptr to write ptr
1239 * @param cls the curlproxytask
1240 * @param tc task context
1243 postprocess_buffer (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
1245 struct ProxyCurlTask *ctask = cls;
1246 struct ProxyREMatch *re_match;
1247 char* re_ptr = ctask->buffer_read_ptr;
1248 char re_hostname[255];
1249 regmatch_t m[RE_N_MATCHES];
1251 ctask->pp_task = GNUNET_SCHEDULER_NO_TASK;
1253 if (GNUNET_YES != ctask->parse_content)
1255 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1256 "PP: Not parsing content\n");
1257 ctask->buf_status = BUF_WAIT_FOR_MHD;
1258 run_mhd_now (ctask->mhd);
1262 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1263 "PP: We need to parse the HTML\n");
1265 /* 0 means match found */
1266 while (0 == regexec (&re_dotplus, re_ptr, RE_N_MATCHES, m, 0))
1268 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1269 "PP: regex match\n");
1271 GNUNET_assert (m[1].rm_so != -1);
1273 memset (re_hostname, 0, sizeof (re_hostname));
1274 memcpy (re_hostname, re_ptr+m[1].rm_so, (m[3].rm_eo-m[1].rm_so));
1277 re_match = GNUNET_malloc (sizeof (struct ProxyREMatch));
1278 re_match->start = re_ptr + m[0].rm_so;
1279 re_match->end = re_ptr + m[3].rm_eo;
1280 re_match->done = GNUNET_NO;
1281 re_match->ctask = ctask;
1283 if ('s' == *(re_ptr+m[1].rm_so-strlen("://")-1)) //FIXME strcmp
1284 re_match->is_ssl = GNUNET_YES;
1286 re_match->is_ssl = GNUNET_NO;
1288 strcpy (re_match->hostname, re_hostname);
1289 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1290 "PP: Got hostname %s\n", re_hostname);
1291 re_ptr += m[3].rm_eo;
1293 if (GNUNET_YES == is_tld (re_match->hostname, GNUNET_GNS_TLD_PLUS))
1295 re_match->hostname[strlen(re_match->hostname)-1] = '\0';
1296 strcpy (re_match->hostname+strlen(re_match->hostname),
1300 re_match->shorten_task = GNUNET_GNS_shorten_zone (gns_handle,
1306 re_match); //FIXME cancel appropriately
1308 GNUNET_CONTAINER_DLL_insert_tail (ctask->pp_match_head,
1309 ctask->pp_match_tail,
1313 ctask->buf_status = BUF_WAIT_FOR_MHD;
1314 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1315 "PP: No more matches\n");
1316 run_mhd_now (ctask->mhd);
1321 * Handle data from cURL
1323 * @param ptr pointer to the data
1324 * @param size number of blocks of data
1325 * @param nmemb blocksize
1326 * @param ctx the curlproxytask
1327 * @return number of bytes handled
1330 curl_download_cb (void *ptr, size_t size, size_t nmemb, void* ctx)
1332 const char *cbuf = ptr;
1333 size_t total = size * nmemb;
1334 struct ProxyCurlTask *ctask = ctx;
1335 size_t buf_space = sizeof (ctask->buffer) -
1336 (ctask->buffer_write_ptr-ctask->buffer);
1338 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1339 "CURL: Got %d. %d free in buffer\n",
1342 if (BUF_WAIT_FOR_CURL != ctask->buf_status)
1343 return CURL_WRITEFUNC_PAUSE;
1345 if (total > (buf_space - CURL_BUF_PADDING))
1347 if (ctask->buf_status == BUF_WAIT_FOR_CURL)
1349 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1350 "CURL: Buffer full starting postprocessing\n");
1351 ctask->buf_status = BUF_WAIT_FOR_PP;
1352 ctask->pp_task = GNUNET_SCHEDULER_add_now (&postprocess_buffer,
1354 return CURL_WRITEFUNC_PAUSE;
1357 /* we should not get called in that case */
1358 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1359 "CURL: called out of context and no space in buffer!\n");
1360 return CURL_WRITEFUNC_PAUSE;
1363 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1364 "CURL: Copying %d bytes to buffer (%s)\n", total, ctask->url);
1365 memcpy (ctask->buffer_write_ptr, cbuf, total);
1366 ctask->bytes_in_buffer += total;
1367 ctask->buffer_write_ptr += total;
1368 ctask->buffer_write_ptr[0] = '\0';
1375 * cURL callback for put data
1378 put_read_callback (void *buf, size_t size, size_t nmemb, void *cls)
1380 struct ProxyCurlTask *ctask = cls;
1381 struct ProxyUploadData *pdata = ctask->upload_data_head;
1382 size_t len = size * nmemb;
1386 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1387 "CURL: put read callback\n");
1390 return CURL_READFUNC_PAUSE;
1393 if (NULL == pdata->value)
1395 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1396 "CURL: Terminating PUT\n");
1398 GNUNET_CONTAINER_DLL_remove (ctask->upload_data_head,
1399 ctask->upload_data_tail,
1401 GNUNET_free (pdata);
1405 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1406 "CURL: read callback value %s\n", pdata->value);
1408 to_copy = pdata->bytes_left;
1412 pos = pdata->value + (pdata->total_bytes - pdata->bytes_left);
1413 memcpy (buf, pos, to_copy);
1414 pdata->bytes_left -= to_copy;
1415 if (pdata->bytes_left <= 0)
1417 GNUNET_free (pdata->value);
1418 GNUNET_CONTAINER_DLL_remove (ctask->upload_data_head,
1419 ctask->upload_data_tail,
1421 GNUNET_free (pdata);
1428 * cURL callback for post data
1431 post_read_callback (void *buf, size_t size, size_t nmemb, void *cls)
1433 struct ProxyCurlTask *ctask = cls;
1434 struct ProxyUploadData *pdata = ctask->upload_data_head;
1435 size_t len = size * nmemb;
1439 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1440 "CURL: read callback\n");
1443 return CURL_READFUNC_PAUSE;
1446 if (NULL == pdata->value)
1448 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1449 "CURL: Terminating POST data\n");
1451 GNUNET_CONTAINER_DLL_remove (ctask->upload_data_head,
1452 ctask->upload_data_tail,
1454 GNUNET_free (pdata);
1458 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1459 "CURL: read callback value %s\n", pdata->value);
1461 to_copy = pdata->bytes_left;
1465 pos = pdata->value + (pdata->total_bytes - pdata->bytes_left);
1466 memcpy (buf, pos, to_copy);
1467 pdata->bytes_left -= to_copy;
1468 if (pdata->bytes_left <= 0)
1470 GNUNET_free (pdata->value);
1471 GNUNET_CONTAINER_DLL_remove (ctask->upload_data_head,
1472 ctask->upload_data_tail,
1474 GNUNET_free (pdata);
1481 * Task that is run when we are ready to receive more data
1484 * @param cls closure
1485 * @param tc task context
1488 curl_task_download (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
1492 * Ask cURL for the select sets and schedule download
1495 curl_download_prepare ()
1502 struct GNUNET_NETWORK_FDSet *grs;
1503 struct GNUNET_NETWORK_FDSet *gws;
1505 struct GNUNET_TIME_Relative rtime;
1511 if (CURLM_OK != (mret = curl_multi_fdset (curl_multi, &rs, &ws, &es, &max)))
1513 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1514 "%s failed at %s:%d: `%s'\n",
1515 "curl_multi_fdset", __FILE__, __LINE__,
1516 curl_multi_strerror (mret));
1517 //TODO cleanup here?
1521 GNUNET_break (CURLM_OK == curl_multi_timeout (curl_multi, &to));
1522 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1523 "cURL multi fds: max=%d timeout=%lld\n", max, (long long) to);
1525 rtime = GNUNET_TIME_UNIT_FOREVER_REL;
1527 rtime = GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MILLISECONDS, to);
1528 grs = GNUNET_NETWORK_fdset_create ();
1529 gws = GNUNET_NETWORK_fdset_create ();
1530 GNUNET_NETWORK_fdset_copy_native (grs, &rs, max + 1);
1531 GNUNET_NETWORK_fdset_copy_native (gws, &ws, max + 1);
1532 if (curl_download_task != GNUNET_SCHEDULER_NO_TASK)
1533 GNUNET_SCHEDULER_cancel (curl_download_task);
1536 curl_download_task =
1537 GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT,
1540 &curl_task_download, curl_multi);
1542 else if (NULL != ctasks_head)
1544 /* as specified in curl docs */
1545 curl_download_task = GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_MILLISECONDS,
1546 &curl_task_download,
1549 GNUNET_NETWORK_fdset_destroy (gws);
1550 GNUNET_NETWORK_fdset_destroy (grs);
1555 * Task that is run when we are ready to receive more data
1558 * @param cls closure
1559 * @param tc task context
1562 curl_task_download (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
1566 struct CURLMsg *msg;
1568 struct ProxyCurlTask *ctask;
1571 struct ProxyCurlTask *clean_head = NULL;
1572 struct ProxyCurlTask *clean_tail = NULL;
1574 curl_download_task = GNUNET_SCHEDULER_NO_TASK;
1576 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
1578 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1579 "Shutdown requested while trying to download\n");
1583 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1591 mret = curl_multi_perform (curl_multi, &running);
1593 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1594 "Running curl tasks: %d\n", running);
1596 for (ctask = ctasks_head; NULL != ctask; ctask = ctask->next)
1598 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1599 "CTask: %s\n", ctask->url);
1603 if (num_ctasks != running)
1605 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1606 "%d ctasks, %d curl running\n", num_ctasks, running);
1612 msg = curl_multi_info_read (curl_multi, &msgnum);
1613 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1614 "Messages left: %d\n", msgnum);
1621 if ((msg->data.result != CURLE_OK) &&
1622 (msg->data.result != CURLE_GOT_NOTHING))
1624 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1625 "Download curl failed");
1627 for (ctask = ctasks_head; NULL != ctask; ctask = ctask->next)
1629 if (NULL == ctask->curl)
1632 if (memcmp (msg->easy_handle, ctask->curl, sizeof (CURL)) != 0)
1635 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1636 "CURL: Download failed for task %s: %s.\n",
1638 curl_easy_strerror (msg->data.result));
1639 ctask->download_is_finished = GNUNET_YES;
1640 ctask->download_error = GNUNET_YES;
1641 if (CURLE_OK == curl_easy_getinfo (ctask->curl,
1642 CURLINFO_RESPONSE_CODE,
1644 ctask->curl_response_code = resp_code;
1645 ctask->ready_to_queue = MHD_YES;
1646 ctask->buf_status = BUF_WAIT_FOR_MHD;
1647 run_mhd_now (ctask->mhd);
1649 GNUNET_CONTAINER_DLL_remove (ctasks_head, ctasks_tail,
1651 GNUNET_CONTAINER_DLL_insert (clean_head, clean_tail, ctask);
1654 GNUNET_assert (ctask != NULL);
1658 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1659 "CURL: download completed.\n");
1661 for (ctask = ctasks_head; NULL != ctask; ctask = ctask->next)
1663 if (NULL == ctask->curl)
1666 if (0 != memcmp (msg->easy_handle, ctask->curl, sizeof (CURL)))
1669 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1670 "CURL: completed task %s found.\n", ctask->url);
1671 if (CURLE_OK == curl_easy_getinfo (ctask->curl,
1672 CURLINFO_RESPONSE_CODE,
1674 ctask->curl_response_code = resp_code;
1677 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1678 "CURL: Completed ctask!\n");
1679 if (GNUNET_SCHEDULER_NO_TASK == ctask->pp_task)
1681 ctask->buf_status = BUF_WAIT_FOR_PP;
1682 ctask->pp_task = GNUNET_SCHEDULER_add_now (&postprocess_buffer,
1686 ctask->ready_to_queue = MHD_YES;
1687 ctask->download_is_finished = GNUNET_YES;
1689 /* We MUST not modify the multi handle else we loose messages */
1690 GNUNET_CONTAINER_DLL_remove (ctasks_head, ctasks_tail,
1692 GNUNET_CONTAINER_DLL_insert (clean_head, clean_tail, ctask);
1696 GNUNET_assert (ctask != NULL);
1698 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1699 "CURL: %s\n", curl_easy_strerror(msg->data.result));
1705 } while (msgnum > 0);
1707 for (ctask=clean_head; NULL != ctask; ctask = ctask->next)
1709 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1710 "CURL: Removing task %s.\n", ctask->url);
1711 curl_multi_remove_handle (curl_multi, ctask->curl);
1712 curl_easy_cleanup (ctask->curl);
1717 for (ctask=ctasks_head; NULL != ctask; ctask = ctask->next)
1720 if (num_ctasks != running)
1722 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1723 "CURL: %d tasks, %d running\n", num_ctasks, running);
1726 GNUNET_assert ( num_ctasks == running );
1728 } while (mret == CURLM_CALL_MULTI_PERFORM);
1730 if (mret != CURLM_OK)
1732 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "CURL: %s failed at %s:%d: `%s'\n",
1733 "curl_multi_perform", __FILE__, __LINE__,
1734 curl_multi_strerror (mret));
1736 curl_download_prepare();
1741 * Process LEHO lookup
1743 * @param cls the ctask
1744 * @param rd_count number of records returned
1745 * @param rd record data
1748 process_leho_lookup (void *cls,
1750 const struct GNUNET_NAMESTORE_RecordData *rd)
1752 struct ProxyCurlTask *ctask = cls;
1753 char hosthdr[262]; //256 + "Host: "
1757 struct hostent *phost;
1759 char resolvename[512];
1762 strcpy (ctask->leho, "");
1765 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1766 "No LEHO present!\n");
1768 for (i=0; i<rd_count; i++)
1770 if (rd[i].record_type != GNUNET_GNS_RECORD_LEHO)
1773 memcpy (ctask->leho, rd[i].data, rd[i].data_size);
1775 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1776 "Found LEHO %s for %s\n", ctask->leho, ctask->url);
1779 if (0 != strcmp (ctask->leho, ""))
1781 sprintf (hosthdr, "%s%s:%d", "Host: ", ctask->leho, ctask->port);
1782 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1783 "New HTTP header value: %s\n", hosthdr);
1784 ctask->headers = curl_slist_append (ctask->headers, hosthdr);
1785 GNUNET_assert (NULL != ctask->headers);
1786 ret = curl_easy_setopt (ctask->curl, CURLOPT_HTTPHEADER, ctask->headers);
1787 if (CURLE_OK != ret)
1789 GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "%s failed at %s:%d: `%s'\n",
1790 "curl_easy_setopt", __FILE__, __LINE__, curl_easy_strerror(ret));
1795 if (ctask->mhd->is_ssl)
1797 phost = (struct hostent*)gethostbyname (ctask->host);
1801 ssl_ip = inet_ntoa(*((struct in_addr*)(phost->h_addr)));
1802 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1803 "SSL target server: %s\n", ssl_ip);
1804 sprintf (resolvename, "%s:%d:%s", ctask->leho, HTTPS_PORT, ssl_ip);
1805 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1806 "Curl resolve: %s\n", resolvename);
1807 ctask->resolver = curl_slist_append ( ctask->resolver, resolvename);
1808 curl_easy_setopt (ctask->curl, CURLOPT_RESOLVE, ctask->resolver);
1809 sprintf (curlurl, "https://%s:%d%s", ctask->leho, ctask->port, ctask->url);
1810 curl_easy_setopt (ctask->curl, CURLOPT_URL, curlurl);
1814 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1815 "gethostbyname failed for %s!\n", ctask->host);
1816 ctask->download_is_finished = GNUNET_YES;
1817 ctask->download_error = GNUNET_YES;
1822 if (CURLM_OK != (mret=curl_multi_add_handle (curl_multi, ctask->curl)))
1824 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1825 "%s failed at %s:%d: `%s'\n",
1826 "curl_multi_add_handle", __FILE__, __LINE__,
1827 curl_multi_strerror (mret));
1828 ctask->download_is_finished = GNUNET_YES;
1829 ctask->download_error = GNUNET_YES;
1832 GNUNET_CONTAINER_DLL_insert (ctasks_head, ctasks_tail, ctask);
1834 curl_download_prepare ();
1840 * Initialize download and trigger curl
1842 * @param cls the proxycurltask
1843 * @param auth_name the name of the authority (site of origin) of ctask->host
1847 process_get_authority (void *cls,
1848 const char* auth_name)
1850 struct ProxyCurlTask *ctask = cls;
1852 if (NULL == auth_name)
1854 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1855 "Get authority failed!\n");
1856 strcpy (ctask->authority, "");
1860 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1861 "Get authority yielded %s\n", auth_name);
1862 strcpy (ctask->authority, auth_name);
1865 GNUNET_GNS_lookup_zone (gns_handle,
1868 GNUNET_GNS_RECORD_LEHO,
1869 GNUNET_YES, //Only cached for performance
1871 &process_leho_lookup,
1877 mhd_log_callback (void* cls, const char* url)
1879 struct ProxyCurlTask *ctask;
1881 ctask = GNUNET_malloc (sizeof (struct ProxyCurlTask));
1882 strcpy (ctask->url, url);
1888 * Main MHD callback for handling requests.
1891 * @param con MHD connection handle
1892 * @param url the url in the request
1893 * @param meth the HTTP method used ("GET", "PUT", etc.)
1894 * @param ver the HTTP version string (i.e. "HTTP/1.1")
1895 * @param upload_data the data being uploaded (excluding HEADERS,
1896 * for a POST that fits into memory and that is encoded
1897 * with a supported encoding, the POST data will NOT be
1898 * given in upload_data and is instead available as
1899 * part of MHD_get_connection_values; very large POST
1900 * data *will* be made available incrementally in
1902 * @param upload_data_size set initially to the size of the
1903 * upload_data provided; the method must update this
1904 * value to the number of bytes NOT processed;
1905 * @param con_cls pointer to location where we store the 'struct Request'
1906 * @return MHD_YES if the connection was handled successfully,
1907 * MHD_NO if the socket must be closed due to a serious
1908 * error while handling the request
1911 create_response (void *cls,
1912 struct MHD_Connection *con,
1916 const char *upload_data,
1917 size_t *upload_data_size,
1920 struct MhdHttpList* hd = cls;
1921 const char* page = "<html><head><title>gnunet-gns-proxy</title>"
1922 "</head><body>cURL fail</body></html>";
1924 char curlurl[MAX_HTTP_URI_LENGTH]; // buffer overflow!
1927 struct ProxyCurlTask *ctask = *con_cls;
1928 struct ProxyUploadData *fin_post;
1929 struct curl_forms forms[5];
1930 struct ProxyUploadData *upload_data_iter;
1933 if ((0 != strcasecmp (meth, MHD_HTTP_METHOD_GET)) &&
1934 (0 != strcasecmp (meth, MHD_HTTP_METHOD_PUT)) &&
1935 (0 != strcasecmp (meth, MHD_HTTP_METHOD_POST)) &&
1936 (0 != strcasecmp (meth, MHD_HTTP_METHOD_HEAD)))
1938 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1939 "MHD: %s NOT IMPLEMENTED!\n", meth);
1944 if (GNUNET_NO == ctask->accepted)
1947 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
1948 "Got %s request for %s\n", meth, url);
1950 ctask->curl = curl_easy_init();
1951 ctask->curl_running = GNUNET_NO;
1952 if (NULL == ctask->curl)
1954 ctask->response = MHD_create_response_from_buffer (strlen (page),
1956 MHD_RESPMEM_PERSISTENT);
1957 ret = MHD_queue_response (con,
1960 MHD_destroy_response (ctask->response);
1961 GNUNET_free (ctask);
1965 if (ctask->mhd->is_ssl)
1966 ctask->port = HTTPS_PORT;
1968 ctask->port = HTTP_PORT;
1970 MHD_get_connection_values (con,
1972 &con_val_iter, ctask);
1974 curl_easy_setopt (ctask->curl, CURLOPT_HEADERFUNCTION, &curl_check_hdr);
1975 curl_easy_setopt (ctask->curl, CURLOPT_HEADERDATA, ctask);
1976 curl_easy_setopt (ctask->curl, CURLOPT_WRITEFUNCTION, &curl_download_cb);
1977 curl_easy_setopt (ctask->curl, CURLOPT_WRITEDATA, ctask);
1978 curl_easy_setopt (ctask->curl, CURLOPT_FOLLOWLOCATION, 0);
1979 curl_easy_setopt (ctask->curl, CURLOPT_IPRESOLVE, CURL_IPRESOLVE_V4);
1981 if (GNUNET_NO == ctask->mhd->is_ssl)
1983 sprintf (curlurl, "http://%s:%d%s", ctask->host, ctask->port, ctask->url);
1984 curl_easy_setopt (ctask->curl, CURLOPT_URL, curlurl);
1988 curl_easy_setopt (ctask->curl, CURLOPT_FAILONERROR, 1);
1989 curl_easy_setopt (ctask->curl, CURLOPT_CONNECTTIMEOUT, 600L);
1990 curl_easy_setopt (ctask->curl, CURLOPT_TIMEOUT, 600L);
1992 /* Add GNS header */
1993 ctask->headers = curl_slist_append (ctask->headers,
1995 ctask->accepted = GNUNET_YES;
1996 ctask->download_in_progress = GNUNET_YES;
1997 ctask->buf_status = BUF_WAIT_FOR_CURL;
1998 ctask->connection = con;
1999 ctask->curl_response_code = MHD_HTTP_OK;
2000 ctask->buffer_read_ptr = ctask->buffer;
2001 ctask->buffer_write_ptr = ctask->buffer;
2002 ctask->pp_task = GNUNET_SCHEDULER_NO_TASK;
2005 if (0 == strcasecmp (meth, MHD_HTTP_METHOD_PUT))
2007 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2008 "Setting up PUT\n");
2010 curl_easy_setopt (ctask->curl, CURLOPT_UPLOAD, 1);
2011 curl_easy_setopt (ctask->curl, CURLOPT_READDATA, ctask);
2012 curl_easy_setopt (ctask->curl, CURLOPT_READFUNCTION, &put_read_callback);
2013 ctask->headers = curl_slist_append (ctask->headers,
2014 "Transfer-Encoding: chunked");
2017 if (0 == strcasecmp (meth, MHD_HTTP_METHOD_POST))
2019 //FIXME handle multipart
2020 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2021 "Setting up POST processor\n");
2022 ctask->post_handler = MHD_create_post_processor (con,
2024 &con_post_data_iter,
2026 ctask->headers = curl_slist_append (ctask->headers,
2027 "Transfer-Encoding: chunked");
2031 if (0 == strcasecmp (meth, MHD_HTTP_METHOD_HEAD))
2033 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2034 "Setting NOBODY\n");
2035 curl_easy_setopt (ctask->curl, CURLOPT_NOBODY, 1);
2039 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2040 "MHD: Adding new curl task for %s\n", ctask->host);
2042 GNUNET_GNS_get_authority (gns_handle,
2044 &process_get_authority,
2046 ctask->ready_to_queue = GNUNET_NO;
2047 ctask->fin = GNUNET_NO;
2048 ctask->curl_running = GNUNET_YES;
2052 ctask = (struct ProxyCurlTask *) *con_cls;
2053 if (0 == strcasecmp (meth, MHD_HTTP_METHOD_POST))
2055 if (0 != *upload_data_size)
2058 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
2059 "Invoking POST processor\n");
2060 MHD_post_process (ctask->post_handler,
2061 upload_data, *upload_data_size);
2062 *upload_data_size = 0;
2063 if ((GNUNET_NO == ctask->is_httppost) &&
2064 (GNUNET_NO == ctask->curl_running))
2066 curl_easy_setopt (ctask->curl, CURLOPT_POST, 1);
2067 curl_easy_setopt (ctask->curl, CURLOPT_READFUNCTION,
2068 &post_read_callback);
2069 curl_easy_setopt (ctask->curl, CURLOPT_READDATA, ctask);
2071 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2072 "MHD: Adding new curl task for %s\n", ctask->host);
2074 GNUNET_GNS_get_authority (gns_handle,
2076 &process_get_authority,
2078 ctask->ready_to_queue = GNUNET_NO;
2079 ctask->fin = GNUNET_NO;
2080 ctask->curl_running = GNUNET_YES;
2084 else if (GNUNET_NO == ctask->post_done)
2086 if (GNUNET_YES == ctask->is_httppost)
2088 for (upload_data_iter = ctask->upload_data_head;
2089 NULL != upload_data_iter;
2090 upload_data_iter = upload_data_iter->next)
2093 if (NULL != upload_data_iter->filename)
2095 forms[i].option = CURLFORM_FILENAME;
2096 forms[i].value = upload_data_iter->filename;
2097 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2098 "Adding filename %s\n",
2102 if (NULL != upload_data_iter->content_type)
2104 forms[i].option = CURLFORM_CONTENTTYPE;
2105 forms[i].value = upload_data_iter->content_type;
2106 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2107 "Adding content type %s\n",
2111 forms[i].option = CURLFORM_PTRCONTENTS;
2112 forms[i].value = upload_data_iter->value;
2113 forms[i+1].option = CURLFORM_END;
2115 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2116 "Adding formdata for %s (len=%lld)\n",
2117 upload_data_iter->key,
2118 upload_data_iter->total_bytes);
2120 curl_formadd(&ctask->httppost, &ctask->httppost_last,
2121 CURLFORM_COPYNAME, upload_data_iter->key,
2122 CURLFORM_CONTENTSLENGTH, upload_data_iter->total_bytes,
2123 CURLFORM_ARRAY, forms,
2126 curl_easy_setopt (ctask->curl, CURLOPT_HTTPPOST,
2129 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2130 "MHD: Adding new curl task for %s\n", ctask->host);
2132 GNUNET_GNS_get_authority (gns_handle,
2134 &process_get_authority,
2136 ctask->ready_to_queue = GNUNET_YES;
2137 ctask->fin = GNUNET_NO;
2138 ctask->curl_running = GNUNET_YES;
2139 ctask->post_done = GNUNET_YES;
2143 fin_post = GNUNET_malloc (sizeof (struct ProxyUploadData));
2144 GNUNET_CONTAINER_DLL_insert_tail (ctask->upload_data_head,
2145 ctask->upload_data_tail,
2147 ctask->post_done = GNUNET_YES;
2152 if (GNUNET_YES != ctask->ready_to_queue)
2153 return MHD_YES; /* wait longer */
2155 if (GNUNET_YES == ctask->fin)
2158 ctask->fin = GNUNET_YES;
2159 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2160 "MHD: Queueing response for %s\n", ctask->url);
2161 ret = MHD_queue_response (con, ctask->curl_response_code, ctask->response);
2162 run_mhd_now (ctask->mhd);
2173 struct MhdHttpList *hd;
2175 for (hd=mhd_httpd_head; NULL != hd; hd = hd->next)
2181 #define UNSIGNED_MHD_LONG_LONG unsigned MHD_LONG_LONG
2187 * @param hd the daemon to run
2190 run_httpd (struct MhdHttpList *hd)
2195 struct GNUNET_NETWORK_FDSet *wrs;
2196 struct GNUNET_NETWORK_FDSet *wws;
2197 struct GNUNET_NETWORK_FDSet *wes;
2200 UNSIGNED_MHD_LONG_LONG timeout;
2201 struct GNUNET_TIME_Relative tv;
2206 wrs = GNUNET_NETWORK_fdset_create ();
2207 wes = GNUNET_NETWORK_fdset_create ();
2208 wws = GNUNET_NETWORK_fdset_create ();
2210 GNUNET_assert (MHD_YES == MHD_get_fdset (hd->daemon, &rs, &ws, &es, &max));
2213 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2214 "MHD fds: max=%d\n", max);
2216 haveto = MHD_get_timeout (hd->daemon, &timeout);
2218 if (MHD_YES == haveto)
2219 tv.rel_value = (uint64_t) timeout;
2221 tv = GNUNET_TIME_UNIT_FOREVER_REL;
2222 GNUNET_NETWORK_fdset_copy_native (wrs, &rs, max + 1);
2223 GNUNET_NETWORK_fdset_copy_native (wws, &ws, max + 1);
2224 GNUNET_NETWORK_fdset_copy_native (wes, &es, max + 1);
2226 if (GNUNET_SCHEDULER_NO_TASK != hd->httpd_task)
2227 GNUNET_SCHEDULER_cancel (hd->httpd_task);
2229 GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_HIGH,
2232 GNUNET_NETWORK_fdset_destroy (wrs);
2233 GNUNET_NETWORK_fdset_destroy (wws);
2234 GNUNET_NETWORK_fdset_destroy (wes);
2239 * Task run whenever HTTP server operations are pending.
2242 * @param tc sched context
2245 do_httpd (void *cls,
2246 const struct GNUNET_SCHEDULER_TaskContext *tc)
2248 struct MhdHttpList *hd = cls;
2250 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2251 "MHD: Main loop\n");
2252 hd->httpd_task = GNUNET_SCHEDULER_NO_TASK;
2253 MHD_run (hd->daemon);
2259 * Read data from socket
2261 * @param cls the closure
2262 * @param tc scheduler context
2265 do_read (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
2269 * Read from remote end
2271 * @param cls closure
2272 * @param tc scheduler context
2275 do_read_remote (void* cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
2279 * Write data to remote socket
2281 * @param cls the closure
2282 * @param tc scheduler context
2285 do_write_remote (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
2287 struct Socks5Request *s5r = cls;
2290 s5r->fwdwtask = GNUNET_SCHEDULER_NO_TASK;
2292 if ((NULL != tc->read_ready) &&
2293 (GNUNET_NETWORK_fdset_isset (tc->write_ready, s5r->remote_sock)) &&
2294 ((len = GNUNET_NETWORK_socket_send (s5r->remote_sock, s5r->rbuf,
2297 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2298 "Successfully sent %d bytes to remote socket\n",
2303 GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING, "write remote");
2304 if (GNUNET_SCHEDULER_NO_TASK != s5r->rtask)
2305 GNUNET_SCHEDULER_cancel (s5r->rtask);
2306 if (GNUNET_SCHEDULER_NO_TASK != s5r->wtask)
2307 GNUNET_SCHEDULER_cancel (s5r->wtask);
2308 if (GNUNET_SCHEDULER_NO_TASK != s5r->fwdrtask)
2309 GNUNET_SCHEDULER_cancel (s5r->fwdrtask);
2310 GNUNET_NETWORK_socket_close (s5r->remote_sock);
2311 GNUNET_NETWORK_socket_close (s5r->sock);
2317 GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL,
2324 * Clean up s5r handles
2326 * @param s5r the handle to destroy
2329 cleanup_s5r (struct Socks5Request *s5r)
2331 if (GNUNET_SCHEDULER_NO_TASK != s5r->rtask)
2332 GNUNET_SCHEDULER_cancel (s5r->rtask);
2333 if (GNUNET_SCHEDULER_NO_TASK != s5r->fwdwtask)
2334 GNUNET_SCHEDULER_cancel (s5r->fwdwtask);
2335 if (GNUNET_SCHEDULER_NO_TASK != s5r->fwdrtask)
2336 GNUNET_SCHEDULER_cancel (s5r->fwdrtask);
2337 if (NULL != s5r->remote_sock)
2338 GNUNET_NETWORK_socket_close (s5r->remote_sock);
2339 if ((NULL != s5r->sock) && (s5r->cleanup_sock == GNUNET_YES))
2340 GNUNET_NETWORK_socket_close (s5r->sock);
2347 * Write data to socket
2349 * @param cls the closure
2350 * @param tc scheduler context
2353 do_write (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
2355 struct Socks5Request *s5r = cls;
2358 s5r->wtask = GNUNET_SCHEDULER_NO_TASK;
2360 if ((NULL != tc->read_ready) &&
2361 (GNUNET_NETWORK_fdset_isset (tc->write_ready, s5r->sock)) &&
2362 ((len = GNUNET_NETWORK_socket_send (s5r->sock, s5r->wbuf,
2365 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2366 "Successfully sent %d bytes to socket\n",
2371 GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING, "write");
2372 s5r->cleanup = GNUNET_YES;
2373 s5r->cleanup_sock = GNUNET_YES;
2378 if (GNUNET_YES == s5r->cleanup)
2384 if ((s5r->state == SOCKS5_DATA_TRANSFER) &&
2385 (s5r->fwdrtask == GNUNET_SCHEDULER_NO_TASK))
2387 GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL,
2389 &do_read_remote, s5r);
2394 * Read from remote end
2396 * @param cls closure
2397 * @param tc scheduler context
2400 do_read_remote (void* cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
2402 struct Socks5Request *s5r = cls;
2404 s5r->fwdrtask = GNUNET_SCHEDULER_NO_TASK;
2405 if ((NULL != tc->write_ready) &&
2406 (GNUNET_NETWORK_fdset_isset (tc->read_ready, s5r->remote_sock)) &&
2407 (s5r->wbuf_len = GNUNET_NETWORK_socket_recv (s5r->remote_sock, s5r->wbuf,
2408 sizeof (s5r->wbuf))))
2410 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2411 "Successfully read %d bytes from remote socket\n",
2416 if (0 == s5r->wbuf_len)
2417 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2418 "0 bytes received from remote... graceful shutdown!\n");
2419 if (s5r->fwdwtask != GNUNET_SCHEDULER_NO_TASK)
2420 GNUNET_SCHEDULER_cancel (s5r->fwdwtask);
2421 if (s5r->rtask != GNUNET_SCHEDULER_NO_TASK)
2422 GNUNET_SCHEDULER_cancel (s5r->rtask);
2424 GNUNET_NETWORK_socket_close (s5r->remote_sock);
2425 s5r->remote_sock = NULL;
2426 GNUNET_NETWORK_socket_close (s5r->sock);
2432 s5r->wtask = GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL,
2439 * Adds a socket to MHD
2441 * @param h the handle to the socket to add
2442 * @param daemon the daemon to add the fd to
2443 * @return whatever MHD_add_connection returns
2446 add_handle_to_mhd (struct GNUNET_NETWORK_Handle *h, struct MHD_Daemon *daemon)
2449 struct sockaddr *addr;
2452 fd = dup (GNUNET_NETWORK_get_fd (h));
2453 addr = GNUNET_NETWORK_get_addr (h);
2454 len = GNUNET_NETWORK_get_addrlen (h);
2456 return MHD_add_connection (daemon, fd, addr, len);
2461 * Read file in filename
2463 * @param filename file to read
2464 * @param size pointer where filesize is stored
2465 * @return NULL on error
2468 load_file (const char* filename,
2475 GNUNET_DISK_file_size (filename, &fsize,
2476 GNUNET_YES, GNUNET_YES))
2478 if (fsize > MAX_PEM_SIZE)
2480 *size = (unsigned int) fsize;
2481 buffer = GNUNET_malloc (*size);
2482 if (fsize != GNUNET_DISK_fn_read (filename, buffer, (size_t) fsize))
2484 GNUNET_free (buffer);
2492 * Load PEM key from file
2494 * @param key where to store the data
2495 * @param keyfile path to the PEM file
2496 * @return GNUNET_OK on success
2499 load_key_from_file (gnutls_x509_privkey_t key, const char* keyfile)
2501 gnutls_datum_t key_data;
2504 key_data.data = load_file (keyfile, &key_data.size);
2505 ret = gnutls_x509_privkey_import (key, &key_data,
2506 GNUTLS_X509_FMT_PEM);
2507 if (GNUTLS_E_SUCCESS != ret)
2509 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2510 _("Unable to import private key from file `%s'\n"),
2514 GNUNET_free (key_data.data);
2515 return (GNUTLS_E_SUCCESS != ret) ? GNUNET_SYSERR : GNUNET_OK;
2520 * Load cert from file
2522 * @param crt struct to store data in
2523 * @param certfile path to pem file
2524 * @return GNUNET_OK on success
2527 load_cert_from_file (gnutls_x509_crt_t crt, char* certfile)
2529 gnutls_datum_t cert_data;
2532 cert_data.data = load_file (certfile, &cert_data.size);
2533 ret = gnutls_x509_crt_import (crt, &cert_data,
2534 GNUTLS_X509_FMT_PEM);
2535 if (GNUTLS_E_SUCCESS != ret)
2537 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2538 _("Unable to import certificate %s\n"), certfile);
2541 GNUNET_free (cert_data.data);
2542 return (GNUTLS_E_SUCCESS != ret) ? GNUNET_SYSERR : GNUNET_OK;
2547 * Generate new certificate for specific name
2549 * @param name the subject name to generate a cert for
2550 * @return a struct holding the PEM data
2552 static struct ProxyGNSCertificate *
2553 generate_gns_certificate (const char *name)
2556 unsigned int serial;
2557 size_t key_buf_size;
2558 size_t cert_buf_size;
2559 gnutls_x509_crt_t request;
2563 ret = gnutls_x509_crt_init (&request);
2565 if (GNUTLS_E_SUCCESS != ret)
2570 GNUNET_break (GNUTLS_E_SUCCESS == gnutls_x509_crt_set_key (request, proxy_ca.key));
2572 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Generating cert\n");
2574 struct ProxyGNSCertificate *pgc =
2575 GNUNET_malloc (sizeof (struct ProxyGNSCertificate));
2577 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Adding DNs\n");
2579 gnutls_x509_crt_set_dn_by_oid (request, GNUTLS_OID_X520_COUNTRY_NAME,
2581 gnutls_x509_crt_set_dn_by_oid (request, GNUTLS_OID_X520_ORGANIZATION_NAME,
2583 gnutls_x509_crt_set_dn_by_oid (request, GNUTLS_OID_X520_COMMON_NAME,
2584 0, name, strlen (name));
2585 GNUNET_break (GNUTLS_E_SUCCESS == gnutls_x509_crt_set_version (request, 3));
2587 ret = gnutls_rnd (GNUTLS_RND_NONCE, &serial, sizeof (serial));
2589 etime = time (NULL);
2590 tm_data = localtime (&etime);
2593 ret = gnutls_x509_crt_set_serial (request,
2597 ret = gnutls_x509_crt_set_activation_time (request,
2600 etime = mktime (tm_data);
2607 ret = gnutls_x509_crt_set_expiration_time (request,
2609 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Signing...\n");
2611 ret = gnutls_x509_crt_sign (request, proxy_ca.cert, proxy_ca.key);
2613 key_buf_size = sizeof (pgc->key);
2614 cert_buf_size = sizeof (pgc->cert);
2616 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Exporting certificate...\n");
2618 gnutls_x509_crt_export (request, GNUTLS_X509_FMT_PEM,
2619 pgc->cert, &cert_buf_size);
2621 gnutls_x509_privkey_export (proxy_ca.key, GNUTLS_X509_FMT_PEM,
2622 pgc->key, &key_buf_size);
2625 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Cleaning up\n");
2626 gnutls_x509_crt_deinit (request);
2634 * Accept policy for mhdaemons
2637 * @param addr the sockaddr
2638 * @param addrlen the sockaddr length
2639 * @return MHD_NO if sockaddr is wrong or number of connections is too high
2642 accept_cb (void* cls, const struct sockaddr *addr, socklen_t addrlen)
2644 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2645 "In MHD accept policy cb\n");
2649 if (addr->sa_family == AF_UNIX)
2653 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2654 "Connection accepted\n");
2661 * Adds a socket to an SSL MHD instance
2662 * It is important the the domain name is
2663 * correct. In most cases we need to start a new daemon
2665 * @param h the handle to add to a daemon
2666 * @param domain the domain the ssl daemon has to serve
2667 * @return MHD_YES on success
2670 add_handle_to_ssl_mhd (struct GNUNET_NETWORK_Handle *h, const char* domain)
2672 struct MhdHttpList *hd;
2673 struct ProxyGNSCertificate *pgc;
2674 struct NetworkHandleList *nh;
2676 for (hd = mhd_httpd_head; NULL != hd; hd = hd->next)
2677 if (0 == strcmp (hd->domain, domain))
2682 pgc = generate_gns_certificate (domain);
2684 hd = GNUNET_malloc (sizeof (struct MhdHttpList));
2685 hd->is_ssl = GNUNET_YES;
2686 strcpy (hd->domain, domain);
2687 hd->proxy_cert = pgc;
2690 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2691 "No previous SSL instance found... starting new one for %s\n",
2693 #if HAVE_MHD_NO_LISTEN_SOCKET
2694 hd->daemon = MHD_start_daemon (MHD_USE_DEBUG | MHD_USE_SSL | MHD_USE_NO_LISTEN_SOCKET,
2697 &create_response, hd,
2698 MHD_OPTION_CONNECTION_LIMIT,
2699 MHD_MAX_CONNECTIONS,
2700 MHD_OPTION_CONNECTION_TIMEOUT, (unsigned int) 16,
2701 MHD_OPTION_NOTIFY_COMPLETED, NULL, NULL,
2702 MHD_OPTION_HTTPS_MEM_KEY, pgc->key,
2703 MHD_OPTION_HTTPS_MEM_CERT, pgc->cert,
2704 MHD_OPTION_URI_LOG_CALLBACK, &mhd_log_callback,
2708 hd->daemon = MHD_start_daemon (MHD_USE_DEBUG | MHD_USE_SSL,
2709 4444 /* dummy port */,
2711 &create_response, hd,
2712 MHD_OPTION_LISTEN_SOCKET, GNUNET_NETWORK_get_fd (mhd_unix_socket),
2713 MHD_OPTION_CONNECTION_LIMIT,
2714 MHD_MAX_CONNECTIONS,
2715 MHD_OPTION_CONNECTION_TIMEOUT, (unsigned int) 16,
2716 MHD_OPTION_NOTIFY_COMPLETED, NULL, NULL,
2717 MHD_OPTION_HTTPS_MEM_KEY, pgc->key,
2718 MHD_OPTION_HTTPS_MEM_CERT, pgc->cert,
2719 MHD_OPTION_URI_LOG_CALLBACK, &mhd_log_callback,
2723 GNUNET_assert (hd->daemon != NULL);
2724 hd->httpd_task = GNUNET_SCHEDULER_NO_TASK;
2726 GNUNET_CONTAINER_DLL_insert (mhd_httpd_head, mhd_httpd_tail, hd);
2729 nh = GNUNET_malloc (sizeof (struct NetworkHandleList));
2732 GNUNET_CONTAINER_DLL_insert (hd->socket_handles_head,
2733 hd->socket_handles_tail,
2736 return add_handle_to_mhd (h, hd->daemon);
2741 * Read data from incoming connection
2743 * @param cls the closure
2744 * @param tc the scheduler context
2747 do_read (void* cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
2749 struct Socks5Request *s5r = cls;
2750 struct socks5_client_hello *c_hello;
2751 struct socks5_server_hello *s_hello;
2752 struct socks5_client_request *c_req;
2753 struct socks5_server_response *s_resp;
2758 struct hostent *phost;
2760 struct sockaddr_in remote_addr;
2761 struct in_addr *r_sin_addr;
2762 struct NetworkHandleList *nh;
2764 s5r->rtask = GNUNET_SCHEDULER_NO_TASK;
2766 if ((NULL != tc->write_ready) &&
2767 (GNUNET_NETWORK_fdset_isset (tc->read_ready, s5r->sock)) &&
2768 (s5r->rbuf_len = GNUNET_NETWORK_socket_recv (s5r->sock, s5r->rbuf,
2769 sizeof (s5r->rbuf))))
2771 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2772 "Successfully read %d bytes from socket\n",
2777 if (s5r->rbuf_len != 0)
2778 GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING, "read");
2780 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "client disco!\n");
2782 if (s5r->fwdrtask != GNUNET_SCHEDULER_NO_TASK)
2783 GNUNET_SCHEDULER_cancel (s5r->fwdrtask);
2784 if (s5r->wtask != GNUNET_SCHEDULER_NO_TASK)
2785 GNUNET_SCHEDULER_cancel (s5r->wtask);
2786 if (s5r->fwdwtask != GNUNET_SCHEDULER_NO_TASK)
2787 GNUNET_SCHEDULER_cancel (s5r->fwdwtask);
2788 GNUNET_NETWORK_socket_close (s5r->remote_sock);
2789 GNUNET_NETWORK_socket_close (s5r->sock);
2794 if (s5r->state == SOCKS5_INIT)
2796 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2798 c_hello = (struct socks5_client_hello*)&s5r->rbuf;
2800 GNUNET_assert (c_hello->version == SOCKS_VERSION_5);
2802 s_hello = (struct socks5_server_hello*)&s5r->wbuf;
2803 s5r->wbuf_len = sizeof( struct socks5_server_hello );
2805 s_hello->version = c_hello->version;
2806 s_hello->auth_method = SOCKS_AUTH_NONE;
2808 /* Write response to client */
2809 s5r->wtask = GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL,
2813 s5r->rtask = GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL,
2817 s5r->state = SOCKS5_REQUEST;
2821 if (s5r->state == SOCKS5_REQUEST)
2823 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2824 "Processing SOCKS5 request\n");
2825 c_req = (struct socks5_client_request*)&s5r->rbuf;
2826 s_resp = (struct socks5_server_response*)&s5r->wbuf;
2827 //Only 10byte for ipv4 response!
2828 s5r->wbuf_len = 10;//sizeof (struct socks5_server_response);
2830 GNUNET_assert (c_req->addr_type == 3);
2832 dom_len = *((uint8_t*)(&(c_req->addr_type) + 1));
2833 memset(domain, 0, sizeof(domain));
2834 strncpy(domain, (char*)(&(c_req->addr_type) + 2), dom_len);
2835 req_port = *((uint16_t*)(&(c_req->addr_type) + 2 + dom_len));
2837 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2838 "Requested connection is %s:%d\n",
2842 if (is_tld (domain, GNUNET_GNS_TLD) ||
2843 is_tld (domain, GNUNET_GNS_TLD_ZKEY))
2845 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2846 "Requested connection is gnunet tld\n",
2850 if (ntohs(req_port) == HTTPS_PORT)
2852 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2853 "Requested connection is HTTPS\n");
2854 ret = add_handle_to_ssl_mhd ( s5r->sock, domain );
2856 else if (NULL != httpd)
2858 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2859 "Requested connection is HTTP\n");
2860 nh = GNUNET_malloc (sizeof (struct NetworkHandleList));
2863 GNUNET_CONTAINER_DLL_insert (mhd_httpd_head->socket_handles_head,
2864 mhd_httpd_head->socket_handles_tail,
2867 ret = add_handle_to_mhd ( s5r->sock, httpd );
2872 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2873 _("Failed to start HTTP server\n"));
2874 s_resp->version = 0x05;
2875 s_resp->reply = 0x01;
2876 s5r->cleanup = GNUNET_YES;
2877 s5r->cleanup_sock = GNUNET_YES;
2879 GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL,
2885 /* Signal success */
2886 s_resp->version = 0x05;
2887 s_resp->reply = 0x00;
2888 s_resp->reserved = 0x00;
2889 s_resp->addr_type = 0x01;
2891 s5r->cleanup = GNUNET_YES;
2892 s5r->cleanup_sock = GNUNET_NO;
2894 GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL,
2902 phost = (struct hostent*)gethostbyname (domain);
2905 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2906 "Resolve %s error!\n", domain );
2907 s_resp->version = 0x05;
2908 s_resp->reply = 0x01;
2909 s5r->cleanup = GNUNET_YES;
2910 s5r->cleanup_sock = GNUNET_YES;
2912 GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL,
2918 s5r->remote_sock = GNUNET_NETWORK_socket_create (AF_INET,
2921 r_sin_addr = (struct in_addr*)(phost->h_addr);
2922 remote_ip = r_sin_addr->s_addr;
2923 memset(&remote_addr, 0, sizeof(remote_addr));
2924 remote_addr.sin_family = AF_INET;
2925 #if HAVE_SOCKADDR_IN_SIN_LEN
2926 remote_addr.sin_len = sizeof (remote_addr);
2928 remote_addr.sin_addr.s_addr = remote_ip;
2929 remote_addr.sin_port = req_port;
2931 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2932 "target server: %s:%u\n", inet_ntoa(remote_addr.sin_addr),
2936 GNUNET_NETWORK_socket_connect ( s5r->remote_sock,
2937 (const struct sockaddr*)&remote_addr,
2938 sizeof (remote_addr)))
2939 && (errno != EINPROGRESS))
2941 GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING, "connect");
2942 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2943 "socket request error...\n");
2944 s_resp->version = 0x05;
2945 s_resp->reply = 0x01;
2947 GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL,
2954 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2955 "new remote connection\n");
2957 s_resp->version = 0x05;
2958 s_resp->reply = 0x00;
2959 s_resp->reserved = 0x00;
2960 s_resp->addr_type = 0x01;
2962 s5r->state = SOCKS5_DATA_TRANSFER;
2965 GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL,
2969 GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL,
2977 if (s5r->state == SOCKS5_DATA_TRANSFER)
2979 if ((s5r->remote_sock == NULL) || (s5r->rbuf_len == 0))
2981 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2982 "Closing connection to client\n");
2983 if (s5r->rtask != GNUNET_SCHEDULER_NO_TASK)
2984 GNUNET_SCHEDULER_cancel (s5r->rtask);
2985 if (s5r->fwdwtask != GNUNET_SCHEDULER_NO_TASK)
2986 GNUNET_SCHEDULER_cancel (s5r->fwdwtask);
2987 if (s5r->fwdrtask != GNUNET_SCHEDULER_NO_TASK)
2988 GNUNET_SCHEDULER_cancel (s5r->fwdrtask);
2989 if (s5r->fwdrtask != GNUNET_SCHEDULER_NO_TASK)
2990 GNUNET_SCHEDULER_cancel (s5r->fwdrtask);
2992 if (s5r->remote_sock != NULL)
2993 GNUNET_NETWORK_socket_close (s5r->remote_sock);
2994 GNUNET_NETWORK_socket_close (s5r->sock);
2999 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3000 "forwarding %d bytes from client\n", s5r->rbuf_len);
3003 GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL,
3005 &do_write_remote, s5r);
3007 if (s5r->fwdrtask == GNUNET_SCHEDULER_NO_TASK)
3010 GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL,
3012 &do_read_remote, s5r);
3019 * Accept new incoming connections
3021 * @param cls the closure
3022 * @param tc the scheduler context
3025 do_accept (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
3027 struct GNUNET_NETWORK_Handle *s;
3028 struct Socks5Request *s5r;
3030 ltask = GNUNET_SCHEDULER_NO_TASK;
3031 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
3034 ltask = GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL,
3038 s = GNUNET_NETWORK_socket_accept (lsock, NULL, NULL);
3042 GNUNET_log_strerror (GNUNET_ERROR_TYPE_ERROR, "accept");
3046 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3047 "Got an inbound connection, waiting for data\n");
3049 s5r = GNUNET_malloc (sizeof (struct Socks5Request));
3051 s5r->state = SOCKS5_INIT;
3052 s5r->wtask = GNUNET_SCHEDULER_NO_TASK;
3053 s5r->fwdwtask = GNUNET_SCHEDULER_NO_TASK;
3054 s5r->fwdrtask = GNUNET_SCHEDULER_NO_TASK;
3055 s5r->rtask = GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL,
3062 * Task run on shutdown
3064 * @param cls closure
3065 * @param tc task context
3068 do_shutdown (void *cls,
3069 const struct GNUNET_SCHEDULER_TaskContext *tc)
3071 struct MhdHttpList *hd;
3072 struct MhdHttpList *tmp_hd;
3073 struct NetworkHandleList *nh;
3074 struct NetworkHandleList *tmp_nh;
3075 struct ProxyCurlTask *ctask;
3076 struct ProxyCurlTask *ctask_tmp;
3077 struct ProxyUploadData *pdata;
3079 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
3080 "Shutting down...\n");
3081 if (NULL != local_gns_zone)
3082 GNUNET_free (local_gns_zone);
3083 if (NULL != local_private_zone)
3084 GNUNET_free (local_private_zone);
3085 if (NULL != local_shorten_zone)
3086 GNUNET_free (local_shorten_zone);
3088 if (GNUNET_SCHEDULER_NO_TASK != curl_download_task)
3090 GNUNET_SCHEDULER_cancel (curl_download_task);
3091 curl_download_task = GNUNET_SCHEDULER_NO_TASK;
3094 for (hd = mhd_httpd_head; hd != NULL; hd = tmp_hd)
3098 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3099 "Stopping daemon\n");
3101 if (GNUNET_SCHEDULER_NO_TASK != hd->httpd_task)
3103 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3104 "Stopping select task %d\n",
3106 GNUNET_SCHEDULER_cancel (hd->httpd_task);
3107 hd->httpd_task = GNUNET_SCHEDULER_NO_TASK;
3109 if (NULL != hd->daemon)
3111 MHD_stop_daemon (hd->daemon);
3114 for (nh = hd->socket_handles_head; nh != NULL; nh = tmp_nh)
3118 GNUNET_NETWORK_socket_close (nh->h);
3123 if (NULL != hd->proxy_cert)
3125 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3126 "Free certificate\n");
3127 GNUNET_free (hd->proxy_cert);
3133 for (ctask=ctasks_head; ctask != NULL; ctask=ctask_tmp)
3135 ctask_tmp = ctask->next;
3137 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3138 "Cleaning up cURL task\n");
3140 if (ctask->curl != NULL)
3141 curl_easy_cleanup (ctask->curl);
3143 if (NULL != ctask->headers)
3144 curl_slist_free_all (ctask->headers);
3145 if (NULL != ctask->resolver)
3146 curl_slist_free_all (ctask->resolver);
3148 if (NULL != ctask->response)
3149 MHD_destroy_response (ctask->response);
3151 pdata = ctask->upload_data_head;
3153 //FIXME free pdata here
3154 for (; pdata != NULL; pdata = ctask->upload_data_head)
3156 GNUNET_CONTAINER_DLL_remove (ctask->upload_data_head,
3157 ctask->upload_data_tail,
3159 GNUNET_free_non_null (pdata->filename);
3160 GNUNET_free_non_null (pdata->content_type);
3161 GNUNET_free_non_null (pdata->key);
3162 GNUNET_free_non_null (pdata->value);
3163 GNUNET_free (pdata);
3165 GNUNET_free (ctask);
3167 curl_multi_cleanup (curl_multi);
3168 GNUNET_GNS_disconnect (gns_handle);
3169 gnutls_global_deinit ();
3174 * Compiles a regex for us
3176 * @param re ptr to re struct
3177 * @param rt the expression to compile
3178 * @return 0 on success
3181 compile_regex (regex_t *re, const char* rt)
3186 status = regcomp (re, rt, REG_EXTENDED|REG_NEWLINE);
3189 regerror (status, re, err, 1024);
3190 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3191 "Regex error compiling '%s': %s\n", rt, err);
3199 * Loads the users local zone key
3201 * @return GNUNET_YES on success
3204 load_local_zone_key (const struct GNUNET_CONFIGURATION_Handle *cfg)
3207 struct GNUNET_CRYPTO_RsaPrivateKey *key;
3208 struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded pkey;
3209 struct GNUNET_CRYPTO_ShortHashCode *zone;
3210 struct GNUNET_CRYPTO_ShortHashAsciiEncoded zonename;
3212 if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_filename (cfg, "gns",
3213 "ZONEKEY", &keyfile))
3215 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3216 "Unable to load zone key config value!\n");
3220 if (GNUNET_NO == GNUNET_DISK_file_test (keyfile))
3222 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3223 "Unable to load zone key %s!\n", keyfile);
3224 GNUNET_free(keyfile);
3228 key = GNUNET_CRYPTO_rsa_key_create_from_file (keyfile);
3229 GNUNET_CRYPTO_rsa_key_get_public (key, &pkey);
3230 local_gns_zone = GNUNET_malloc (sizeof (struct GNUNET_CRYPTO_ShortHashCode));
3231 GNUNET_CRYPTO_short_hash(&pkey,
3232 sizeof(struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded),
3234 zone = local_gns_zone;
3235 GNUNET_CRYPTO_short_hash_to_enc (zone, &zonename);
3236 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3237 "Using zone: %s!\n", &zonename);
3238 GNUNET_CRYPTO_rsa_key_free(key);
3239 GNUNET_free(keyfile);
3242 if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_filename (cfg, "gns",
3243 "PRIVATE_ZONEKEY", &keyfile))
3245 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3246 "Unable to load private zone key config value!\n");
3249 if ((NULL != keyfile) && (GNUNET_NO == GNUNET_DISK_file_test (keyfile)))
3251 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3252 "Unable to load private zone key %s!\n", keyfile);
3253 GNUNET_free(keyfile);
3257 key = GNUNET_CRYPTO_rsa_key_create_from_file (keyfile);
3258 GNUNET_CRYPTO_rsa_key_get_public (key, &pkey);
3259 local_private_zone = GNUNET_malloc (sizeof (struct GNUNET_CRYPTO_ShortHashCode));
3260 GNUNET_CRYPTO_short_hash(&pkey,
3261 sizeof(struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded),
3262 local_private_zone);
3263 GNUNET_CRYPTO_short_hash_to_enc (zone, &zonename);
3264 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3265 "Using private zone: %s!\n", &zonename);
3266 GNUNET_CRYPTO_rsa_key_free(key);
3267 GNUNET_free(keyfile);
3271 if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_filename (cfg, "gns",
3272 "SHORTEN_ZONEKEY", &keyfile))
3274 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3275 "Unable to load shorten zone key config value!\n");
3278 if ((NULL != keyfile) && (GNUNET_NO == GNUNET_DISK_file_test (keyfile)))
3280 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3281 "Unable to load shorten zone key %s!\n", keyfile);
3282 GNUNET_free(keyfile);
3286 key = GNUNET_CRYPTO_rsa_key_create_from_file (keyfile);
3287 GNUNET_CRYPTO_rsa_key_get_public (key, &pkey);
3288 local_shorten_zone = GNUNET_malloc (sizeof (struct GNUNET_CRYPTO_ShortHashCode));
3289 GNUNET_CRYPTO_short_hash(&pkey,
3290 sizeof(struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded),
3291 local_shorten_zone);
3292 GNUNET_CRYPTO_short_hash_to_enc (zone, &zonename);
3293 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3294 "Using shorten zone: %s!\n", &zonename);
3295 GNUNET_CRYPTO_rsa_key_free(key);
3296 GNUNET_free(keyfile);
3304 * Main function that will be run
3306 * @param cls closure
3307 * @param args remaining command-line arguments
3308 * @param cfgfile name of the configuration file used (for saving, can be NULL!)
3309 * @param cfg configuration
3312 run (void *cls, char *const *args, const char *cfgfile,
3313 const struct GNUNET_CONFIGURATION_Handle *cfg)
3315 struct sockaddr_in sa;
3316 struct MhdHttpList *hd;
3317 char* cafile_cfg = NULL;
3319 #if !HAVE_MHD_NO_LISTEN_SOCKET
3321 char* proxy_sockfile;
3322 struct sockaddr_un mhd_unix_sock_addr;
3325 if (NULL == (curl_multi = curl_multi_init ()))
3327 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3328 "Failed to create cURL multo handle!\n");
3332 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
3334 cafile = cafile_opt;
3337 if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_filename (cfg, "gns-proxy",
3341 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3342 "Unable to load proxy CA config value!\n");
3343 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3344 "No proxy CA provided!\n");
3347 cafile = cafile_cfg;
3349 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3350 "Using %s as CA\n", cafile);
3352 gnutls_global_init ();
3353 gnutls_x509_crt_init (&proxy_ca.cert);
3354 gnutls_x509_privkey_init (&proxy_ca.key);
3356 if ( (GNUNET_OK != load_cert_from_file (proxy_ca.cert, cafile)) ||
3357 (GNUNET_OK != load_key_from_file (proxy_ca.key, cafile)) )
3359 // FIXME: release resources...
3363 GNUNET_free_non_null (cafile_cfg);
3365 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3366 "Loading Template\n");
3368 compile_regex (&re_dotplus, (char*) RE_A_HREF);
3370 if (NULL == (gns_handle = GNUNET_GNS_connect (cfg)))
3372 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3373 "Unable to connect to GNS!\n");
3376 if (GNUNET_NO == load_local_zone_key (cfg))
3378 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3379 "Unable to load zone!\n");
3383 memset (&sa, 0, sizeof (sa));
3384 sa.sin_family = AF_INET;
3385 sa.sin_port = htons (port);
3386 #if HAVE_SOCKADDR_IN_SIN_LEN
3387 sa.sin_len = sizeof (sa);
3390 lsock = GNUNET_NETWORK_socket_create (AF_INET,
3394 if ((NULL == lsock) ||
3396 GNUNET_NETWORK_socket_bind (lsock, (const struct sockaddr *) &sa,
3399 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3400 "Failed to create listen socket bound to `%s'",
3401 GNUNET_a2s ((const struct sockaddr *) &sa, sizeof (sa)));
3403 GNUNET_NETWORK_socket_close (lsock);
3407 if (GNUNET_OK != GNUNET_NETWORK_socket_listen (lsock, 5))
3409 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3410 "Failed to listen on socket bound to `%s'",
3411 GNUNET_a2s ((const struct sockaddr *) &sa, sizeof (sa)));
3414 ltask = GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL,
3415 lsock, &do_accept, NULL);
3417 if (0 != curl_global_init (CURL_GLOBAL_WIN32))
3419 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3420 "cURL global init failed!\n");
3424 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3425 "Proxy listens on port %u\n",
3427 #if ! HAVE_MHD_NO_LISTEN_SOCKET
3428 if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_filename (cfg, "gns-proxy",
3432 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3433 "Specify PROXY_UNIXPATH in gns-proxy config section!\n");
3436 if (NULL == (mhd_unix_socket = GNUNET_NETWORK_socket_create (AF_UNIX,
3440 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3441 "Unable to create unix domain socket!\n");
3445 mhd_unix_sock_addr.sun_family = AF_UNIX;
3446 strcpy (mhd_unix_sock_addr.sun_path, proxy_sockfile);
3449 mhd_unix_sock_addr.sun_path[0] = '\0';
3451 #if HAVE_SOCKADDR_IN_SIN_LEN
3452 mhd_unix_sock_addr.sun_len = (u_char) sizeof (struct sockaddr_un);
3455 len = strlen (proxy_sockfile) + sizeof(AF_UNIX);
3456 GNUNET_free (proxy_sockfile);
3458 if (GNUNET_OK != GNUNET_NETWORK_socket_bind (mhd_unix_socket,
3459 (struct sockaddr*)&mhd_unix_sock_addr,
3462 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3463 "Unable to bind unix domain socket!\n");
3467 if (GNUNET_OK != GNUNET_NETWORK_socket_listen (mhd_unix_socket,
3470 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3471 "Unable to listen on unix domain socket!\n");
3476 hd = GNUNET_malloc (sizeof (struct MhdHttpList));
3477 hd->is_ssl = GNUNET_NO;
3478 strcpy (hd->domain, "");
3480 #if HAVE_MHD_NO_LISTEN_SOCKET
3481 httpd = MHD_start_daemon (MHD_USE_DEBUG | MHD_USE_NO_LISTEN_SOCKET,
3484 &create_response, hd,
3485 MHD_OPTION_CONNECTION_LIMIT, MHD_MAX_CONNECTIONS,
3486 MHD_OPTION_CONNECTION_TIMEOUT, (unsigned int) 16,
3487 MHD_OPTION_NOTIFY_COMPLETED,
3489 MHD_OPTION_URI_LOG_CALLBACK, &mhd_log_callback, NULL,
3492 httpd = MHD_start_daemon (MHD_USE_DEBUG,
3493 4444 /* Dummy port */,
3495 &create_response, hd,
3496 MHD_OPTION_LISTEN_SOCKET, GNUNET_NETWORK_get_fd (mhd_unix_socket),
3497 MHD_OPTION_CONNECTION_LIMIT, MHD_MAX_CONNECTIONS,
3498 MHD_OPTION_CONNECTION_TIMEOUT, (unsigned int) 16,
3499 MHD_OPTION_NOTIFY_COMPLETED,
3501 MHD_OPTION_URI_LOG_CALLBACK, &mhd_log_callback, NULL,
3504 GNUNET_break (httpd != NULL);
3506 hd->httpd_task = GNUNET_SCHEDULER_NO_TASK;
3507 GNUNET_CONTAINER_DLL_insert (mhd_httpd_head, mhd_httpd_tail, hd);
3509 GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL,
3510 &do_shutdown, NULL);
3515 * The main function for gnunet-gns-proxy.
3517 * @param argc number of arguments from the command line
3518 * @param argv command line arguments
3519 * @return 0 ok, 1 on error
3522 main (int argc, char *const *argv)
3524 static const struct GNUNET_GETOPT_CommandLineOption options[] = {
3526 gettext_noop ("listen on specified port (default: 7777)"), 1,
3527 &GNUNET_GETOPT_set_ulong, &port},
3528 {'a', "authority", NULL,
3529 gettext_noop ("pem file to use as CA"), 1,
3530 &GNUNET_GETOPT_set_string, &cafile_opt},
3531 GNUNET_GETOPT_OPTION_END
3535 if (GNUNET_OK != GNUNET_STRINGS_get_utf8_args (argc, argv, &argc, &argv))
3537 GNUNET_log_setup ("gnunet-gns-proxy", "WARNING", NULL);
3540 GNUNET_PROGRAM_run (argc, argv, "gnunet-gns-proxy",
3541 _("GNUnet GNS proxy"),
3543 &run, NULL)) ? 0 : 1;
3544 GNUNET_free_non_null ((char *) argv);
3548 /* end of gnunet-gns-proxy.c */