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];
776 if (NULL == ctask->response)
778 /* FIXME: get total size from curl (if available) */
779 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
780 "Creating response for %s\n", ctask->url);
781 ctask->response = MHD_create_response_from_callback (MHD_SIZE_UNKNOWN,
782 sizeof (ctask->buffer),
786 ctask->ready_to_queue = GNUNET_YES;
790 if (html_mime_len <= bytes)
792 memcpy (hdr_mime, buffer, html_mime_len);
793 hdr_mime[html_mime_len] = '\0';
795 if (0 == strcmp (hdr_mime, HTML_HDR_CONTENT))
797 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
798 "Got HTML HTTP response header\n");
799 ctask->parse_content = GNUNET_YES;
803 if (cookie_hdr_len > bytes)
806 memcpy (hdr_generic, buffer, bytes);
807 hdr_generic[bytes] = '\0';
809 if ('\n' == hdr_generic[bytes-1])
810 hdr_generic[bytes-1] = '\0';
812 if (hdr_generic[bytes-2] == '\r')
813 hdr_generic[bytes-2] = '\0';
815 if (0 == memcmp (hdr_generic,
816 MHD_HTTP_HEADER_SET_COOKIE,
819 ndup = GNUNET_strdup (hdr_generic+cookie_hdr_len+1);
820 memset (new_cookie_hdr, 0, sizeof (new_cookie_hdr));
821 tok = strtok (ndup, ";");
823 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
824 "Looking for cookie in : %s\n", hdr_generic);
826 for (; 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",
951 * @param hd a http daemon list entry
954 run_httpd (struct MhdHttpList *hd);
965 * Task run whenever HTTP server operations are pending.
968 * @param tc sched context
972 const struct GNUNET_SCHEDULER_TaskContext *tc);
975 run_mhd_now (struct MhdHttpList *hd)
977 if (GNUNET_SCHEDULER_NO_TASK != hd->httpd_task)
979 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
980 "MHD: killing old task\n");
981 GNUNET_SCHEDULER_cancel (hd->httpd_task);
983 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
984 "MHD: Scheduling MHD now\n");
985 hd->httpd_task = GNUNET_SCHEDULER_add_now (&do_httpd, hd);
989 * Ask cURL for the select sets and schedule download
992 curl_download_prepare ();
995 * Callback to free content
997 * @param cls content to free
998 * @param tc task context
1001 mhd_content_free (void *cls,
1002 const struct GNUNET_SCHEDULER_TaskContext *tc)
1004 struct ProxyCurlTask *ctask = cls;
1005 struct ProxyUploadData *pdata = ctask->upload_data_head;
1006 GNUNET_assert (NULL == ctask->pp_match_head);
1008 if (NULL != ctask->headers)
1009 curl_slist_free_all (ctask->headers);
1011 if (NULL != ctask->headers)
1012 curl_slist_free_all (ctask->resolver);
1014 if (NULL != ctask->response)
1015 MHD_destroy_response (ctask->response);
1017 if (NULL != ctask->post_handler)
1018 MHD_destroy_post_processor (ctask->post_handler);
1020 for (; pdata != NULL; pdata = ctask->upload_data_head)
1022 GNUNET_CONTAINER_DLL_remove (ctask->upload_data_head,
1023 ctask->upload_data_tail,
1025 GNUNET_free_non_null (pdata->filename);
1026 GNUNET_free_non_null (pdata->content_type);
1027 GNUNET_free_non_null (pdata->key);
1028 GNUNET_free_non_null (pdata->value);
1029 GNUNET_free (pdata);
1033 GNUNET_free (ctask);
1038 * Callback for MHD response
1040 * @param cls closure
1041 * @param pos in buffer
1043 * @param max space in buffer
1044 * @return number of bytes written
1047 mhd_content_cb (void *cls,
1052 struct ProxyCurlTask *ctask = cls;
1053 struct ProxyREMatch *re_match = ctask->pp_match_head;
1055 long long int bytes_to_copy = ctask->buffer_write_ptr - ctask->buffer_read_ptr;
1057 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1058 "MHD: content cb for %s. To copy: %lld\n",
1059 ctask->url, bytes_to_copy);
1060 GNUNET_assert (bytes_to_copy >= 0);
1062 if ((GNUNET_YES == ctask->download_is_finished) &&
1063 (GNUNET_NO == ctask->download_error) &&
1064 (0 == bytes_to_copy)) /* &&
1065 (BUF_WAIT_FOR_CURL == ctask->buf_status))*/
1067 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
1068 "MHD: sending response for %s\n", ctask->url);
1069 ctask->download_in_progress = GNUNET_NO;
1070 run_mhd_now (ctask->mhd);
1071 GNUNET_SCHEDULER_add_now (&mhd_content_free, ctask);
1072 total_mhd_connections--;
1073 return MHD_CONTENT_READER_END_OF_STREAM;
1076 if ((GNUNET_YES == ctask->download_error) &&
1077 (GNUNET_YES == ctask->download_is_finished) &&
1078 (0 == bytes_to_copy)) /* &&
1079 (BUF_WAIT_FOR_CURL == ctask->buf_status))*/
1081 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
1082 "MHD: sending error response\n");
1083 ctask->download_in_progress = GNUNET_NO;
1084 run_mhd_now (ctask->mhd);
1085 GNUNET_SCHEDULER_add_now (&mhd_content_free, ctask);
1086 total_mhd_connections--;
1087 return MHD_CONTENT_READER_END_WITH_ERROR;
1090 if ( ctask->buf_status == BUF_WAIT_FOR_CURL )
1094 for (; NULL != re_match; re_match = ctask->pp_match_head)
1096 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1097 "MHD: Processing PP %s\n",
1098 re_match->hostname);
1099 bytes_to_copy = re_match->start - ctask->buffer_read_ptr;
1100 GNUNET_assert (bytes_to_copy >= 0);
1102 if (bytes_to_copy+copied > max)
1104 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1105 "MHD: buffer in response too small for %d. Using available space (%d). (%s)\n",
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", copied);
1117 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1118 "MHD: copying %d bytes to mhd response at offset %d\n",
1119 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", 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", 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: %d, space left in buf: %d\n",
1163 bytes_to_copy, max-copied);
1165 GNUNET_assert (0 <= bytes_to_copy);
1167 if (GNUNET_NO == ctask->download_is_finished)
1169 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1170 "MHD: Purging buffer\n");
1171 memmove (ctask->buffer, ctask->buffer_read_ptr, bytes_to_copy);
1172 ctask->buffer_read_ptr = ctask->buffer;
1173 ctask->buffer_write_ptr = ctask->buffer + bytes_to_copy;
1174 ctask->buffer[bytes_to_copy] = '\0';
1177 if (bytes_to_copy+copied > max)
1178 bytes_to_copy = max-copied;
1180 if (0 > bytes_to_copy)
1183 memcpy (buf+copied, ctask->buffer_read_ptr, bytes_to_copy);
1184 ctask->buffer_read_ptr += bytes_to_copy;
1185 copied += bytes_to_copy;
1186 ctask->buf_status = BUF_WAIT_FOR_CURL;
1188 if (NULL != ctask->curl)
1189 curl_easy_pause (ctask->curl, CURLPAUSE_CONT);
1191 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1192 "MHD: copied %d bytes\n", copied);
1193 run_mhd_now (ctask->mhd);
1198 * Shorten result callback
1200 * @param cls the proxycurltask
1201 * @param short_name the shortened name (NULL on error)
1204 process_shorten (void* cls, const char* short_name)
1206 struct ProxyREMatch *re_match = cls;
1207 char result[sizeof (re_match->result)];
1209 if (NULL == short_name)
1211 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1212 "PP: Unable to shorten %s\n",
1213 re_match->hostname);
1214 GNUNET_CONTAINER_DLL_remove (re_match->ctask->pp_match_head,
1215 re_match->ctask->pp_match_tail,
1217 GNUNET_free (re_match);
1221 if (0 == strcmp (short_name, re_match->ctask->leho))
1222 strcpy (result, re_match->ctask->host);
1224 strcpy (result, short_name);
1226 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1227 "PP: Shorten %s -> %s\n",
1231 if (re_match->ctask->mhd->is_ssl)
1232 sprintf (re_match->result, "href=\"https://%s", result);
1234 sprintf (re_match->result, "href=\"http://%s", result);
1236 re_match->done = GNUNET_YES;
1237 run_mhd_now (re_match->ctask->mhd);
1242 * Postprocess data in buffer. From read ptr to write ptr
1244 * @param cls the curlproxytask
1245 * @param tc task context
1248 postprocess_buffer (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
1250 struct ProxyCurlTask *ctask = cls;
1251 struct ProxyREMatch *re_match;
1252 char* re_ptr = ctask->buffer_read_ptr;
1253 char re_hostname[255];
1254 regmatch_t m[RE_N_MATCHES];
1256 ctask->pp_task = GNUNET_SCHEDULER_NO_TASK;
1258 if (GNUNET_YES != ctask->parse_content)
1260 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1261 "PP: Not parsing content\n");
1262 ctask->buf_status = BUF_WAIT_FOR_MHD;
1263 run_mhd_now (ctask->mhd);
1267 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1268 "PP: We need to parse the HTML\n");
1270 /* 0 means match found */
1271 while (0 == regexec (&re_dotplus, re_ptr, RE_N_MATCHES, m, 0))
1273 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1274 "PP: regex match\n");
1276 GNUNET_assert (m[1].rm_so != -1);
1278 memset (re_hostname, 0, sizeof (re_hostname));
1279 memcpy (re_hostname, re_ptr+m[1].rm_so, (m[3].rm_eo-m[1].rm_so));
1281 re_match = GNUNET_malloc (sizeof (struct ProxyREMatch));
1282 re_match->start = re_ptr + m[0].rm_so;
1283 re_match->end = re_ptr + m[3].rm_eo;
1284 re_match->done = GNUNET_NO;
1285 re_match->ctask = ctask;
1286 strcpy (re_match->hostname, re_hostname);
1287 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1288 "PP: Got hostname %s\n", re_hostname);
1289 re_ptr += m[3].rm_eo;
1291 if (GNUNET_YES == is_tld (re_match->hostname, GNUNET_GNS_TLD_PLUS))
1293 re_match->hostname[strlen(re_match->hostname)-1] = '\0';
1294 strcpy (re_match->hostname+strlen(re_match->hostname),
1298 re_match->shorten_task = GNUNET_GNS_shorten_zone (gns_handle,
1304 re_match); //FIXME cancel appropriately
1306 GNUNET_CONTAINER_DLL_insert_tail (ctask->pp_match_head,
1307 ctask->pp_match_tail,
1311 ctask->buf_status = BUF_WAIT_FOR_MHD;
1312 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1313 "PP: No more matches\n");
1314 run_mhd_now (ctask->mhd);
1318 * Handle data from cURL
1320 * @param ptr pointer to the data
1321 * @param size number of blocks of data
1322 * @param nmemb blocksize
1323 * @param ctx the curlproxytask
1324 * @return number of bytes handled
1327 curl_download_cb (void *ptr, size_t size, size_t nmemb, void* ctx)
1329 const char *cbuf = ptr;
1330 size_t total = size * nmemb;
1331 struct ProxyCurlTask *ctask = ctx;
1332 size_t buf_space = sizeof (ctask->buffer) -
1333 (ctask->buffer_write_ptr-ctask->buffer);
1335 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1336 "CURL: Got %d. %d free in buffer\n",
1339 if (BUF_WAIT_FOR_CURL != ctask->buf_status)
1340 return CURL_WRITEFUNC_PAUSE;
1342 if (total > (buf_space - CURL_BUF_PADDING))
1344 if (ctask->buf_status == BUF_WAIT_FOR_CURL)
1346 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1347 "CURL: Buffer full starting postprocessing\n");
1348 ctask->buf_status = BUF_WAIT_FOR_PP;
1349 ctask->pp_task = GNUNET_SCHEDULER_add_now (&postprocess_buffer,
1351 return CURL_WRITEFUNC_PAUSE;
1354 /* we should not get called in that case */
1355 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1356 "CURL: called out of context and no space in buffer!\n");
1357 return CURL_WRITEFUNC_PAUSE;
1360 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1361 "CURL: Copying %d bytes to buffer (%s)\n", total, ctask->url);
1362 memcpy (ctask->buffer_write_ptr, cbuf, total);
1363 ctask->bytes_in_buffer += total;
1364 ctask->buffer_write_ptr += total;
1365 ctask->buffer_write_ptr[0] = '\0';
1372 * cURL callback for put data
1375 put_read_callback (void *buf, size_t size, size_t nmemb, void *cls)
1377 struct ProxyCurlTask *ctask = cls;
1378 struct ProxyUploadData *pdata = ctask->upload_data_head;
1379 size_t len = size * nmemb;
1383 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1384 "CURL: put read callback\n");
1387 return CURL_READFUNC_PAUSE;
1390 if (NULL == pdata->value)
1392 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1393 "CURL: Terminating PUT\n");
1395 GNUNET_CONTAINER_DLL_remove (ctask->upload_data_head,
1396 ctask->upload_data_tail,
1398 GNUNET_free (pdata);
1402 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1403 "CURL: read callback value %s\n", pdata->value);
1405 to_copy = pdata->bytes_left;
1409 pos = pdata->value + (pdata->total_bytes - pdata->bytes_left);
1410 memcpy (buf, pos, to_copy);
1411 pdata->bytes_left -= to_copy;
1412 if (pdata->bytes_left <= 0)
1414 GNUNET_free (pdata->value);
1415 GNUNET_CONTAINER_DLL_remove (ctask->upload_data_head,
1416 ctask->upload_data_tail,
1418 GNUNET_free (pdata);
1425 * cURL callback for post data
1428 post_read_callback (void *buf, size_t size, size_t nmemb, void *cls)
1430 struct ProxyCurlTask *ctask = cls;
1431 struct ProxyUploadData *pdata = ctask->upload_data_head;
1432 size_t len = size * nmemb;
1436 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1437 "CURL: read callback\n");
1440 return CURL_READFUNC_PAUSE;
1443 if (NULL == pdata->value)
1445 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1446 "CURL: Terminating POST data\n");
1448 GNUNET_CONTAINER_DLL_remove (ctask->upload_data_head,
1449 ctask->upload_data_tail,
1451 GNUNET_free (pdata);
1455 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1456 "CURL: read callback value %s\n", pdata->value);
1458 to_copy = pdata->bytes_left;
1462 pos = pdata->value + (pdata->total_bytes - pdata->bytes_left);
1463 memcpy (buf, pos, to_copy);
1464 pdata->bytes_left -= to_copy;
1465 if (pdata->bytes_left <= 0)
1467 GNUNET_free (pdata->value);
1468 GNUNET_CONTAINER_DLL_remove (ctask->upload_data_head,
1469 ctask->upload_data_tail,
1471 GNUNET_free (pdata);
1477 * Task that is run when we are ready to receive more data
1480 * @param cls closure
1481 * @param tc task context
1484 curl_task_download (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
1487 * Ask cURL for the select sets and schedule download
1490 curl_download_prepare ()
1497 struct GNUNET_NETWORK_FDSet *grs;
1498 struct GNUNET_NETWORK_FDSet *gws;
1500 struct GNUNET_TIME_Relative rtime;
1506 mret = curl_multi_fdset (curl_multi, &rs, &ws, &es, &max);
1508 if (mret != CURLM_OK)
1510 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1511 "%s failed at %s:%d: `%s'\n",
1512 "curl_multi_fdset", __FILE__, __LINE__,
1513 curl_multi_strerror (mret));
1514 //TODO cleanup here?
1518 mret = curl_multi_timeout (curl_multi, &to);
1519 rtime = GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MILLISECONDS, to);
1521 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1522 "cURL multi fds: max=%d timeout=%llu\n", max, to);
1524 grs = GNUNET_NETWORK_fdset_create ();
1525 gws = GNUNET_NETWORK_fdset_create ();
1526 GNUNET_NETWORK_fdset_copy_native (grs, &rs, max + 1);
1527 GNUNET_NETWORK_fdset_copy_native (gws, &ws, max + 1);
1528 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1529 "Scheduling task cURL\n");
1531 if (curl_download_task != GNUNET_SCHEDULER_NO_TASK)
1532 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;
1572 struct ProxyCurlTask *clean_head = NULL;
1573 struct ProxyCurlTask *clean_tail = NULL;
1575 curl_download_task = GNUNET_SCHEDULER_NO_TASK;
1577 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
1579 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1580 "Shutdown requested while trying to download\n");
1584 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1592 mret = curl_multi_perform (curl_multi, &running);
1594 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1595 "Running curl tasks: %d\n", running);
1597 ctask = ctasks_head;
1598 for (; ctask != NULL; ctask = ctask->next)
1600 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1601 "CTask: %s\n", ctask->url);
1605 if (num_ctasks != running)
1607 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1608 "%d ctasks, %d curl running\n", num_ctasks, running);
1613 ctask = ctasks_head;
1614 msg = curl_multi_info_read (curl_multi, &msgnum);
1615 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1616 "Messages left: %d\n", msgnum);
1623 if ((msg->data.result != CURLE_OK) &&
1624 (msg->data.result != CURLE_GOT_NOTHING))
1626 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1627 "Download curl failed");
1629 for (; ctask != NULL; ctask = ctask->next)
1631 if (NULL == ctask->curl)
1634 if (memcmp (msg->easy_handle, ctask->curl, sizeof (CURL)) != 0)
1637 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1638 "CURL: Download failed for task %s: %s.\n",
1640 curl_easy_strerror (msg->data.result));
1641 ctask->download_is_finished = GNUNET_YES;
1642 ctask->download_error = GNUNET_YES;
1643 if (CURLE_OK == curl_easy_getinfo (ctask->curl,
1644 CURLINFO_RESPONSE_CODE,
1646 ctask->curl_response_code = resp_code;
1647 ctask->ready_to_queue = MHD_YES;
1648 ctask->buf_status = BUF_WAIT_FOR_MHD;
1649 run_mhd_now (ctask->mhd);
1651 GNUNET_CONTAINER_DLL_remove (ctasks_head, ctasks_tail,
1653 GNUNET_CONTAINER_DLL_insert (clean_head, clean_tail, ctask);
1656 GNUNET_assert (ctask != NULL);
1660 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1661 "CURL: download completed.\n");
1663 for (; ctask != NULL; ctask = ctask->next)
1665 if (NULL == ctask->curl)
1668 if (0 != memcmp (msg->easy_handle, ctask->curl, sizeof (CURL)))
1671 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1672 "CURL: completed task %s found.\n", ctask->url);
1673 if (CURLE_OK == curl_easy_getinfo (ctask->curl,
1674 CURLINFO_RESPONSE_CODE,
1676 ctask->curl_response_code = resp_code;
1679 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1680 "CURL: Completed ctask!\n");
1681 if (GNUNET_SCHEDULER_NO_TASK == ctask->pp_task)
1683 ctask->buf_status = BUF_WAIT_FOR_PP;
1684 ctask->pp_task = GNUNET_SCHEDULER_add_now (&postprocess_buffer,
1688 ctask->ready_to_queue = MHD_YES;
1689 ctask->download_is_finished = GNUNET_YES;
1691 /* We MUST not modify the multi handle else we loose messages */
1692 GNUNET_CONTAINER_DLL_remove (ctasks_head, ctasks_tail,
1694 GNUNET_CONTAINER_DLL_insert (clean_head, clean_tail, ctask);
1698 GNUNET_assert (ctask != NULL);
1700 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1701 "CURL: %s\n", curl_easy_strerror(msg->data.result));
1707 } while (msgnum > 0);
1709 for (ctask=clean_head; ctask != NULL; ctask = ctask->next)
1711 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1712 "CURL: Removing task %s.\n", ctask->url);
1713 curl_multi_remove_handle (curl_multi, ctask->curl);
1714 curl_easy_cleanup (ctask->curl);
1719 for (ctask=ctasks_head; ctask != NULL; ctask = ctask->next)
1724 if (num_ctasks != running)
1726 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1727 "CURL: %d tasks, %d running\n", num_ctasks, running);
1730 GNUNET_assert ( num_ctasks == running );
1732 } while (mret == CURLM_CALL_MULTI_PERFORM);
1734 if (mret != CURLM_OK)
1736 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "CURL: %s failed at %s:%d: `%s'\n",
1737 "curl_multi_perform", __FILE__, __LINE__,
1738 curl_multi_strerror (mret));
1740 curl_download_prepare();
1744 * Process LEHO lookup
1746 * @param cls the ctask
1747 * @param rd_count number of records returned
1748 * @param rd record data
1751 process_leho_lookup (void *cls,
1753 const struct GNUNET_NAMESTORE_RecordData *rd)
1755 struct ProxyCurlTask *ctask = cls;
1756 char hosthdr[262]; //256 + "Host: "
1760 struct hostent *phost;
1762 char resolvename[512];
1765 strcpy (ctask->leho, "");
1768 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1769 "No LEHO present!\n");
1771 for (i=0; i<rd_count; i++)
1773 if (rd[i].record_type != GNUNET_GNS_RECORD_LEHO)
1776 memcpy (ctask->leho, rd[i].data, rd[i].data_size);
1778 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1779 "Found LEHO %s for %s\n", ctask->leho, ctask->url);
1782 if (0 != strcmp (ctask->leho, ""))
1784 sprintf (hosthdr, "%s%s:%d", "Host: ", ctask->leho, ctask->port);
1785 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1786 "New HTTP header value: %s\n", hosthdr);
1787 ctask->headers = curl_slist_append (ctask->headers, hosthdr);
1788 GNUNET_assert (NULL != ctask->headers);
1789 ret = curl_easy_setopt (ctask->curl, CURLOPT_HTTPHEADER, ctask->headers);
1790 if (CURLE_OK != ret)
1792 GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "%s failed at %s:%d: `%s'\n",
1793 "curl_easy_setopt", __FILE__, __LINE__, curl_easy_strerror(ret));
1798 if (ctask->mhd->is_ssl)
1800 phost = (struct hostent*)gethostbyname (ctask->host);
1804 ssl_ip = inet_ntoa(*((struct in_addr*)(phost->h_addr)));
1805 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1806 "SSL target server: %s\n", ssl_ip);
1807 sprintf (resolvename, "%s:%d:%s", ctask->leho, HTTPS_PORT, ssl_ip);
1808 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1809 "Curl resolve: %s\n", resolvename);
1810 ctask->resolver = curl_slist_append ( ctask->resolver, resolvename);
1811 curl_easy_setopt (ctask->curl, CURLOPT_RESOLVE, ctask->resolver);
1812 sprintf (curlurl, "https://%s:%d%s", ctask->leho, ctask->port, ctask->url);
1813 curl_easy_setopt (ctask->curl, CURLOPT_URL, curlurl);
1817 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1818 "gethostbyname failed for %s!\n", ctask->host);
1819 ctask->download_is_finished = GNUNET_YES;
1820 ctask->download_error = GNUNET_YES;
1825 if (CURLM_OK != (mret=curl_multi_add_handle (curl_multi, ctask->curl)))
1827 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1828 "%s failed at %s:%d: `%s'\n",
1829 "curl_multi_add_handle", __FILE__, __LINE__,
1830 curl_multi_strerror (mret));
1831 ctask->download_is_finished = GNUNET_YES;
1832 ctask->download_error = GNUNET_YES;
1835 GNUNET_CONTAINER_DLL_insert (ctasks_head, ctasks_tail, ctask);
1837 curl_download_prepare ();
1842 * Initialize download and trigger curl
1844 * @param cls the proxycurltask
1845 * @param auth_name the name of the authority (site of origin) of ctask->host
1849 process_get_authority (void *cls,
1850 const char* auth_name)
1852 struct ProxyCurlTask *ctask = cls;
1854 if (NULL == auth_name)
1856 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1857 "Get authority failed!\n");
1858 strcpy (ctask->authority, "");
1862 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1863 "Get authority yielded %s\n", auth_name);
1864 strcpy (ctask->authority, auth_name);
1867 GNUNET_GNS_lookup_zone (gns_handle,
1870 GNUNET_GNS_RECORD_LEHO,
1871 GNUNET_YES, //Only cached for performance
1873 &process_leho_lookup,
1878 mhd_log_callback (void* cls, const char* url)
1880 struct ProxyCurlTask *ctask;
1882 ctask = GNUNET_malloc (sizeof (struct ProxyCurlTask));
1883 strcpy (ctask->url, url);
1884 ctask->accepted = GNUNET_NO;
1889 * Main MHD callback for handling requests.
1892 * @param con MHD connection handle
1893 * @param url the url in the request
1894 * @param meth the HTTP method used ("GET", "PUT", etc.)
1895 * @param ver the HTTP version string (i.e. "HTTP/1.1")
1896 * @param upload_data the data being uploaded (excluding HEADERS,
1897 * for a POST that fits into memory and that is encoded
1898 * with a supported encoding, the POST data will NOT be
1899 * given in upload_data and is instead available as
1900 * part of MHD_get_connection_values; very large POST
1901 * data *will* be made available incrementally in
1903 * @param upload_data_size set initially to the size of the
1904 * upload_data provided; the method must update this
1905 * value to the number of bytes NOT processed;
1906 * @param con_cls pointer to location where we store the 'struct Request'
1907 * @return MHD_YES if the connection was handled successfully,
1908 * MHD_NO if the socket must be closed due to a serious
1909 * error while handling the request
1912 create_response (void *cls,
1913 struct MHD_Connection *con,
1917 const char *upload_data,
1918 size_t *upload_data_size,
1921 struct MhdHttpList* hd = cls;
1922 const char* page = "<html><head><title>gnoxy</title>"\
1923 "</head><body>cURL fail</body></html>";
1925 char curlurl[MAX_HTTP_URI_LENGTH]; // buffer overflow!
1929 struct ProxyCurlTask *ctask = *con_cls;
1930 struct ProxyUploadData *fin_post;
1931 struct curl_forms forms[5];
1932 struct ProxyUploadData *upload_data_iter;
1935 if ((0 != strcasecmp (meth, MHD_HTTP_METHOD_GET)) &&
1936 (0 != strcasecmp (meth, MHD_HTTP_METHOD_PUT)) &&
1937 (0 != strcasecmp (meth, MHD_HTTP_METHOD_POST)) &&
1938 (0 != strcasecmp (meth, MHD_HTTP_METHOD_HEAD)))
1940 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1941 "MHD: %s NOT IMPLEMENTED!\n", meth);
1946 if (GNUNET_NO == ctask->accepted)
1949 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
1950 "Got %s request for %s\n", meth, url);
1952 ctask->curl = curl_easy_init();
1953 ctask->curl_running = GNUNET_NO;
1954 if (NULL == ctask->curl)
1956 ctask->response = MHD_create_response_from_buffer (strlen (page),
1958 MHD_RESPMEM_PERSISTENT);
1959 ret = MHD_queue_response (con,
1962 MHD_destroy_response (ctask->response);
1963 GNUNET_free (ctask);
1967 if (ctask->mhd->is_ssl)
1968 ctask->port = HTTPS_PORT;
1970 ctask->port = HTTP_PORT;
1972 MHD_get_connection_values (con,
1974 &con_val_iter, ctask);
1976 curl_easy_setopt (ctask->curl, CURLOPT_HEADERFUNCTION, &curl_check_hdr);
1977 curl_easy_setopt (ctask->curl, CURLOPT_HEADERDATA, ctask);
1978 curl_easy_setopt (ctask->curl, CURLOPT_WRITEFUNCTION, &curl_download_cb);
1979 curl_easy_setopt (ctask->curl, CURLOPT_WRITEDATA, ctask);
1980 curl_easy_setopt (ctask->curl, CURLOPT_FOLLOWLOCATION, 0);
1981 curl_easy_setopt (ctask->curl, CURLOPT_IPRESOLVE, CURL_IPRESOLVE_V4);
1983 if (GNUNET_NO == ctask->mhd->is_ssl)
1985 sprintf (curlurl, "http://%s:%d%s", ctask->host, ctask->port, ctask->url);
1986 curl_easy_setopt (ctask->curl, CURLOPT_URL, curlurl);
1990 curl_easy_setopt (ctask->curl, CURLOPT_FAILONERROR, 1);
1991 curl_easy_setopt (ctask->curl, CURLOPT_CONNECTTIMEOUT, 600L);
1992 curl_easy_setopt (ctask->curl, CURLOPT_TIMEOUT, 600L);
1994 /* Add GNS header */
1995 //ctask->headers = curl_slist_append (ctask->headers,
1997 ctask->accepted = GNUNET_YES;
1998 ctask->download_in_progress = GNUNET_YES;
1999 ctask->buf_status = BUF_WAIT_FOR_CURL;
2000 ctask->connection = con;
2001 ctask->curl_response_code = MHD_HTTP_OK;
2002 ctask->buffer_read_ptr = ctask->buffer;
2003 ctask->buffer_write_ptr = ctask->buffer;
2004 ctask->pp_task = GNUNET_SCHEDULER_NO_TASK;
2007 if (0 == strcasecmp (meth, MHD_HTTP_METHOD_PUT))
2009 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2010 "Setting up PUT\n");
2012 curl_easy_setopt (ctask->curl, CURLOPT_UPLOAD, 1);
2013 curl_easy_setopt (ctask->curl, CURLOPT_READDATA, ctask);
2014 curl_easy_setopt (ctask->curl, CURLOPT_READFUNCTION, &put_read_callback);
2015 ctask->headers = curl_slist_append (ctask->headers,
2016 "Transfer-Encoding: chunked");
2019 if (0 == strcasecmp (meth, MHD_HTTP_METHOD_POST))
2021 //FIXME handle multipart
2022 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2023 "Setting up POST processor\n");
2024 ctask->post_handler = MHD_create_post_processor (con,
2026 &con_post_data_iter,
2028 ctask->headers = curl_slist_append (ctask->headers,
2029 "Transfer-Encoding: chunked");
2033 if (0 == strcasecmp (meth, MHD_HTTP_METHOD_HEAD))
2035 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2036 "Setting NOBODY\n");
2037 curl_easy_setopt (ctask->curl, CURLOPT_NOBODY, 1);
2041 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2042 "MHD: Adding new curl task for %s\n", ctask->host);
2044 GNUNET_GNS_get_authority (gns_handle,
2046 &process_get_authority,
2048 ctask->ready_to_queue = GNUNET_NO;
2049 ctask->fin = GNUNET_NO;
2050 ctask->curl_running = GNUNET_YES;
2054 ctask = (struct ProxyCurlTask *) *con_cls;
2055 if (0 == strcasecmp (meth, MHD_HTTP_METHOD_POST))
2057 if (0 != *upload_data_size)
2060 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
2061 "Invoking POST processor\n");
2062 MHD_post_process (ctask->post_handler,
2063 upload_data, *upload_data_size);
2064 *upload_data_size = 0;
2065 if ((GNUNET_NO == ctask->is_httppost) &&
2066 (GNUNET_NO == ctask->curl_running))
2068 curl_easy_setopt (ctask->curl, CURLOPT_POST, 1);
2069 curl_easy_setopt (ctask->curl, CURLOPT_READFUNCTION,
2070 &post_read_callback);
2071 curl_easy_setopt (ctask->curl, CURLOPT_READDATA, ctask);
2073 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2074 "MHD: Adding new curl task for %s\n", ctask->host);
2076 GNUNET_GNS_get_authority (gns_handle,
2078 &process_get_authority,
2080 ctask->ready_to_queue = GNUNET_NO;
2081 ctask->fin = GNUNET_NO;
2082 ctask->curl_running = GNUNET_YES;
2086 else if (GNUNET_NO == ctask->post_done)
2088 if (GNUNET_YES == ctask->is_httppost)
2091 for (upload_data_iter = ctask->upload_data_head;
2092 NULL != upload_data_iter;
2093 upload_data_iter = upload_data_iter->next)
2095 if (NULL != upload_data_iter->filename)
2097 forms[i].option = CURLFORM_FILENAME;
2098 forms[i].value = upload_data_iter->filename;
2099 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2100 "Adding filename %s\n",
2104 if (NULL != upload_data_iter->content_type)
2106 forms[i].option = CURLFORM_CONTENTTYPE;
2107 forms[i].value = upload_data_iter->content_type;
2108 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2109 "Adding content type %s\n",
2113 forms[i].option = CURLFORM_PTRCONTENTS;
2114 forms[i].value = upload_data_iter->value;
2115 forms[i+1].option = CURLFORM_END;
2117 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2118 "Adding formdata for %s (len=%lld)\n",
2119 upload_data_iter->key,
2120 upload_data_iter->total_bytes);
2122 curl_formadd(&ctask->httppost, &ctask->httppost_last,
2123 CURLFORM_COPYNAME, upload_data_iter->key,
2124 CURLFORM_CONTENTSLENGTH, upload_data_iter->total_bytes,
2125 CURLFORM_ARRAY, forms,
2128 curl_easy_setopt (ctask->curl, CURLOPT_HTTPPOST,
2131 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2132 "MHD: Adding new curl task for %s\n", ctask->host);
2134 GNUNET_GNS_get_authority (gns_handle,
2136 &process_get_authority,
2138 ctask->ready_to_queue = GNUNET_YES;
2139 ctask->fin = GNUNET_NO;
2140 ctask->curl_running = GNUNET_YES;
2141 ctask->post_done = GNUNET_YES;
2145 fin_post = GNUNET_malloc (sizeof (struct ProxyUploadData));
2146 GNUNET_CONTAINER_DLL_insert_tail (ctask->upload_data_head,
2147 ctask->upload_data_tail,
2149 ctask->post_done = GNUNET_YES;
2154 if (GNUNET_YES != ctask->ready_to_queue)
2155 return MHD_YES; /* wait longer */
2157 if (GNUNET_YES == ctask->fin)
2160 ctask->fin = GNUNET_YES;
2161 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2162 "MHD: Queueing response for %s\n", ctask->url);
2163 ret = MHD_queue_response (con, ctask->curl_response_code, ctask->response);
2164 run_mhd_now (ctask->mhd);
2175 struct MhdHttpList *hd;
2177 for (hd=mhd_httpd_head; NULL != hd; hd = hd->next)
2185 * @param hd the daemon to run
2188 run_httpd (struct MhdHttpList *hd)
2193 struct GNUNET_NETWORK_FDSet *wrs;
2194 struct GNUNET_NETWORK_FDSet *wws;
2195 struct GNUNET_NETWORK_FDSet *wes;
2198 unsigned MHD_LONG_LONG timeout;
2199 struct GNUNET_TIME_Relative tv;
2204 wrs = GNUNET_NETWORK_fdset_create ();
2205 wes = GNUNET_NETWORK_fdset_create ();
2206 wws = GNUNET_NETWORK_fdset_create ();
2208 GNUNET_assert (MHD_YES == MHD_get_fdset (hd->daemon, &rs, &ws, &es, &max));
2211 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2212 "MHD fds: max=%d\n", max);
2214 haveto = MHD_get_timeout (hd->daemon, &timeout);
2216 if (MHD_YES == haveto)
2217 tv.rel_value = (uint64_t) timeout;
2219 tv = GNUNET_TIME_UNIT_FOREVER_REL;
2220 GNUNET_NETWORK_fdset_copy_native (wrs, &rs, max + 1);
2221 GNUNET_NETWORK_fdset_copy_native (wws, &ws, max + 1);
2222 GNUNET_NETWORK_fdset_copy_native (wes, &es, max + 1);
2224 if (GNUNET_SCHEDULER_NO_TASK != hd->httpd_task)
2225 GNUNET_SCHEDULER_cancel (hd->httpd_task);
2227 GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_HIGH,
2230 GNUNET_NETWORK_fdset_destroy (wrs);
2231 GNUNET_NETWORK_fdset_destroy (wws);
2232 GNUNET_NETWORK_fdset_destroy (wes);
2237 * Task run whenever HTTP server operations are pending.
2240 * @param tc sched context
2243 do_httpd (void *cls,
2244 const struct GNUNET_SCHEDULER_TaskContext *tc)
2246 struct MhdHttpList *hd = cls;
2248 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2249 "MHD: Main loop\n");
2250 hd->httpd_task = GNUNET_SCHEDULER_NO_TASK;
2251 MHD_run (hd->daemon);
2258 * Read data from socket
2260 * @param cls the closure
2261 * @param tc scheduler context
2264 do_read (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
2267 * Read from remote end
2269 * @param cls closure
2270 * @param tc scheduler context
2273 do_read_remote (void* cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
2276 * Write data to remote socket
2278 * @param cls the closure
2279 * @param tc scheduler context
2282 do_write_remote (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
2284 struct Socks5Request *s5r = cls;
2287 s5r->fwdwtask = GNUNET_SCHEDULER_NO_TASK;
2289 if ((NULL != tc->read_ready) &&
2290 (GNUNET_NETWORK_fdset_isset (tc->write_ready, s5r->remote_sock)) &&
2291 ((len = GNUNET_NETWORK_socket_send (s5r->remote_sock, s5r->rbuf,
2294 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2295 "Successfully sent %d bytes to remote socket\n",
2300 GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING, "write remote");
2301 if (GNUNET_SCHEDULER_NO_TASK != s5r->rtask)
2302 GNUNET_SCHEDULER_cancel (s5r->rtask);
2303 if (GNUNET_SCHEDULER_NO_TASK != s5r->wtask)
2304 GNUNET_SCHEDULER_cancel (s5r->wtask);
2305 if (GNUNET_SCHEDULER_NO_TASK != s5r->fwdrtask)
2306 GNUNET_SCHEDULER_cancel (s5r->fwdrtask);
2307 GNUNET_NETWORK_socket_close (s5r->remote_sock);
2308 GNUNET_NETWORK_socket_close (s5r->sock);
2314 GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL,
2321 * Clean up s5r handles
2323 * @param s5r the handle to destroy
2326 cleanup_s5r (struct Socks5Request *s5r)
2328 if (GNUNET_SCHEDULER_NO_TASK != s5r->rtask)
2329 GNUNET_SCHEDULER_cancel (s5r->rtask);
2330 if (GNUNET_SCHEDULER_NO_TASK != s5r->fwdwtask)
2331 GNUNET_SCHEDULER_cancel (s5r->fwdwtask);
2332 if (GNUNET_SCHEDULER_NO_TASK != s5r->fwdrtask)
2333 GNUNET_SCHEDULER_cancel (s5r->fwdrtask);
2335 if (NULL != s5r->remote_sock)
2336 GNUNET_NETWORK_socket_close (s5r->remote_sock);
2337 if ((NULL != s5r->sock) && (s5r->cleanup_sock == GNUNET_YES))
2338 GNUNET_NETWORK_socket_close (s5r->sock);
2344 * Write data to socket
2346 * @param cls the closure
2347 * @param tc scheduler context
2350 do_write (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
2352 struct Socks5Request *s5r = cls;
2355 s5r->wtask = GNUNET_SCHEDULER_NO_TASK;
2357 if ((NULL != tc->read_ready) &&
2358 (GNUNET_NETWORK_fdset_isset (tc->write_ready, s5r->sock)) &&
2359 ((len = GNUNET_NETWORK_socket_send (s5r->sock, s5r->wbuf,
2362 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2363 "Successfully sent %d bytes to socket\n",
2369 GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING, "write");
2370 s5r->cleanup = GNUNET_YES;
2371 s5r->cleanup_sock = GNUNET_YES;
2377 if (GNUNET_YES == s5r->cleanup)
2383 if ((s5r->state == SOCKS5_DATA_TRANSFER) &&
2384 (s5r->fwdrtask == GNUNET_SCHEDULER_NO_TASK))
2386 GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL,
2388 &do_read_remote, s5r);
2392 * Read from remote end
2394 * @param cls closure
2395 * @param tc scheduler context
2398 do_read_remote (void* cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
2400 struct Socks5Request *s5r = cls;
2402 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 (s5r->wbuf_len == 0)
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,
2440 * Adds a socket to MHD
2442 * @param h the handle to the socket to add
2443 * @param daemon the daemon to add the fd to
2444 * @return whatever MHD_add_connection returns
2447 add_handle_to_mhd (struct GNUNET_NETWORK_Handle *h, struct MHD_Daemon *daemon)
2450 struct sockaddr *addr;
2453 fd = dup (GNUNET_NETWORK_get_fd (h));
2454 addr = GNUNET_NETWORK_get_addr (h);
2455 len = GNUNET_NETWORK_get_addrlen (h);
2457 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
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 = (unsigned char*) 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;
2530 cert_data.data = NULL;
2533 cert_data.data = (unsigned char*) load_file (certfile, &cert_data.size);
2534 ret = gnutls_x509_crt_import (crt, &cert_data,
2535 GNUTLS_X509_FMT_PEM);
2536 if (GNUTLS_E_SUCCESS != ret)
2538 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2539 _("Unable to import certificate %s\n"), certfile);
2542 GNUNET_free (cert_data.data);
2543 return (GNUTLS_E_SUCCESS != ret) ? GNUNET_SYSERR : GNUNET_OK;
2548 * Generate new certificate for specific name
2550 * @param name the subject name to generate a cert for
2551 * @return a struct holding the PEM data
2553 static struct ProxyGNSCertificate *
2554 generate_gns_certificate (const char *name)
2558 unsigned int serial;
2559 size_t key_buf_size;
2560 size_t cert_buf_size;
2561 gnutls_x509_crt_t request;
2565 ret = gnutls_x509_crt_init (&request);
2567 if (GNUTLS_E_SUCCESS != ret)
2572 ret = gnutls_x509_crt_set_key (request, proxy_ca.key);
2574 if (GNUTLS_E_SUCCESS != ret)
2579 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Generating cert\n");
2581 struct ProxyGNSCertificate *pgc =
2582 GNUNET_malloc (sizeof (struct ProxyGNSCertificate));
2584 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Adding DNs\n");
2586 gnutls_x509_crt_set_dn_by_oid (request, GNUTLS_OID_X520_COUNTRY_NAME,
2589 gnutls_x509_crt_set_dn_by_oid (request, GNUTLS_OID_X520_ORGANIZATION_NAME,
2592 gnutls_x509_crt_set_dn_by_oid (request, GNUTLS_OID_X520_COMMON_NAME,
2593 0, name, strlen (name));
2595 ret = gnutls_x509_crt_set_version (request, 3);
2597 ret = gnutls_rnd (GNUTLS_RND_NONCE, &serial, sizeof (serial));
2599 etime = time (NULL);
2600 tm_data = localtime (&etime);
2603 ret = gnutls_x509_crt_set_serial (request,
2607 ret = gnutls_x509_crt_set_activation_time (request,
2610 etime = mktime (tm_data);
2617 ret = gnutls_x509_crt_set_expiration_time (request,
2619 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Signing...\n");
2621 ret = gnutls_x509_crt_sign (request, proxy_ca.cert, proxy_ca.key);
2623 key_buf_size = sizeof (pgc->key);
2624 cert_buf_size = sizeof (pgc->cert);
2626 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Exporting certificate...\n");
2628 gnutls_x509_crt_export (request, GNUTLS_X509_FMT_PEM,
2629 pgc->cert, &cert_buf_size);
2631 gnutls_x509_privkey_export (proxy_ca.key, GNUTLS_X509_FMT_PEM,
2632 pgc->key, &key_buf_size);
2635 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Cleaning up\n");
2636 gnutls_x509_crt_deinit (request);
2644 * Accept policy for mhdaemons
2647 * @param addr the sockaddr
2648 * @param addrlen the sockaddr length
2649 * @return MHD_NO if sockaddr is wrong or #conns too high
2652 accept_cb (void* cls, const struct sockaddr *addr, socklen_t addrlen)
2654 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2655 "In MHD accept policy cb\n");
2659 if (addr->sa_family == AF_UNIX)
2663 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2664 "Connection accepted\n");
2671 * Adds a socket to an SSL MHD instance
2672 * It is important the the domain name is
2673 * correct. In most cases we need to start a new daemon
2675 * @param h the handle to add to a daemon
2676 * @param domain the domain the ssl daemon has to serve
2677 * @return MHD_YES on success
2680 add_handle_to_ssl_mhd (struct GNUNET_NETWORK_Handle *h, const char* domain)
2682 struct MhdHttpList *hd = NULL;
2683 struct ProxyGNSCertificate *pgc;
2684 struct NetworkHandleList *nh;
2686 for (hd = mhd_httpd_head; NULL != hd; hd = hd->next)
2687 if (0 == strcmp (hd->domain, domain))
2692 pgc = generate_gns_certificate (domain);
2694 hd = GNUNET_malloc (sizeof (struct MhdHttpList));
2695 hd->is_ssl = GNUNET_YES;
2696 strcpy (hd->domain, domain);
2697 hd->proxy_cert = pgc;
2700 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2701 "No previous SSL instance found... starting new one for %s\n",
2703 hd->daemon = MHD_start_daemon (MHD_USE_DEBUG
2705 #if HAVE_MHD_NO_LISTEN_SOCKET
2706 | MHD_USE_NO_LISTEN_SOCKET,
2712 &create_response, hd,
2713 #if !HAVE_MHD_NO_LISTEN_SOCKET
2714 MHD_OPTION_LISTEN_SOCKET, GNUNET_NETWORK_get_fd (mhd_unix_socket),
2716 MHD_OPTION_CONNECTION_LIMIT,
2717 MHD_MAX_CONNECTIONS,
2718 MHD_OPTION_CONNECTION_TIMEOUT, (unsigned int) 16,
2719 MHD_OPTION_NOTIFY_COMPLETED, NULL, NULL,
2720 MHD_OPTION_HTTPS_MEM_KEY, pgc->key,
2721 MHD_OPTION_HTTPS_MEM_CERT, pgc->cert,
2722 MHD_OPTION_URI_LOG_CALLBACK, &mhd_log_callback,
2726 GNUNET_assert (hd->daemon != NULL);
2727 hd->httpd_task = GNUNET_SCHEDULER_NO_TASK;
2729 GNUNET_CONTAINER_DLL_insert (mhd_httpd_head, mhd_httpd_tail, hd);
2732 nh = GNUNET_malloc (sizeof (struct NetworkHandleList));
2735 GNUNET_CONTAINER_DLL_insert (hd->socket_handles_head,
2736 hd->socket_handles_tail,
2739 return add_handle_to_mhd (h, hd->daemon);
2745 * Read data from incoming connection
2747 * @param cls the closure
2748 * @param tc the scheduler context
2751 do_read (void* cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
2753 struct Socks5Request *s5r = cls;
2754 struct socks5_client_hello *c_hello;
2755 struct socks5_server_hello *s_hello;
2756 struct socks5_client_request *c_req;
2757 struct socks5_server_response *s_resp;
2763 struct hostent *phost;
2765 struct sockaddr_in remote_addr;
2766 struct in_addr *r_sin_addr;
2768 struct NetworkHandleList *nh;
2770 s5r->rtask = GNUNET_SCHEDULER_NO_TASK;
2772 if ((NULL != tc->write_ready) &&
2773 (GNUNET_NETWORK_fdset_isset (tc->read_ready, s5r->sock)) &&
2774 (s5r->rbuf_len = GNUNET_NETWORK_socket_recv (s5r->sock, s5r->rbuf,
2775 sizeof (s5r->rbuf))))
2777 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2778 "Successfully read %d bytes from socket\n",
2783 if (s5r->rbuf_len != 0)
2784 GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING, "read");
2786 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "client disco!\n");
2788 if (s5r->fwdrtask != GNUNET_SCHEDULER_NO_TASK)
2789 GNUNET_SCHEDULER_cancel (s5r->fwdrtask);
2790 if (s5r->wtask != GNUNET_SCHEDULER_NO_TASK)
2791 GNUNET_SCHEDULER_cancel (s5r->wtask);
2792 if (s5r->fwdwtask != GNUNET_SCHEDULER_NO_TASK)
2793 GNUNET_SCHEDULER_cancel (s5r->fwdwtask);
2794 GNUNET_NETWORK_socket_close (s5r->remote_sock);
2795 GNUNET_NETWORK_socket_close (s5r->sock);
2800 if (s5r->state == SOCKS5_INIT)
2802 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2804 c_hello = (struct socks5_client_hello*)&s5r->rbuf;
2806 GNUNET_assert (c_hello->version == SOCKS_VERSION_5);
2808 s_hello = (struct socks5_server_hello*)&s5r->wbuf;
2809 s5r->wbuf_len = sizeof( struct socks5_server_hello );
2811 s_hello->version = c_hello->version;
2812 s_hello->auth_method = SOCKS_AUTH_NONE;
2814 /* Write response to client */
2815 s5r->wtask = GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL,
2819 s5r->rtask = GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL,
2823 s5r->state = SOCKS5_REQUEST;
2827 if (s5r->state == SOCKS5_REQUEST)
2829 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2830 "Processing SOCKS5 request\n");
2831 c_req = (struct socks5_client_request*)&s5r->rbuf;
2832 s_resp = (struct socks5_server_response*)&s5r->wbuf;
2833 //Only 10byte for ipv4 response!
2834 s5r->wbuf_len = 10;//sizeof (struct socks5_server_response);
2836 GNUNET_assert (c_req->addr_type == 3);
2838 dom_len = *((uint8_t*)(&(c_req->addr_type) + 1));
2839 memset(domain, 0, sizeof(domain));
2840 strncpy(domain, (char*)(&(c_req->addr_type) + 2), dom_len);
2841 req_port = *((uint16_t*)(&(c_req->addr_type) + 2 + dom_len));
2843 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2844 "Requested connection is %s:%d\n",
2848 if (is_tld (domain, GNUNET_GNS_TLD) ||
2849 is_tld (domain, GNUNET_GNS_TLD_ZKEY))
2851 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2852 "Requested connection is gnunet tld\n",
2856 if (ntohs(req_port) == HTTPS_PORT)
2858 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2859 "Requested connection is HTTPS\n");
2860 ret = add_handle_to_ssl_mhd ( s5r->sock, domain );
2862 else if (NULL != httpd)
2864 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2865 "Requested connection is HTTP\n");
2866 nh = GNUNET_malloc (sizeof (struct NetworkHandleList));
2869 GNUNET_CONTAINER_DLL_insert (mhd_httpd_head->socket_handles_head,
2870 mhd_httpd_head->socket_handles_tail,
2873 ret = add_handle_to_mhd ( s5r->sock, httpd );
2878 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2879 _("Failed to start HTTP server\n"));
2880 s_resp->version = 0x05;
2881 s_resp->reply = 0x01;
2882 s5r->cleanup = GNUNET_YES;
2883 s5r->cleanup_sock = GNUNET_YES;
2885 GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL,
2891 /* Signal success */
2892 s_resp->version = 0x05;
2893 s_resp->reply = 0x00;
2894 s_resp->reserved = 0x00;
2895 s_resp->addr_type = 0x01;
2897 s5r->cleanup = GNUNET_YES;
2898 s5r->cleanup_sock = GNUNET_NO;
2900 GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL,
2908 phost = (struct hostent*)gethostbyname (domain);
2911 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2912 "Resolve %s error!\n", domain );
2913 s_resp->version = 0x05;
2914 s_resp->reply = 0x01;
2915 s5r->cleanup = GNUNET_YES;
2916 s5r->cleanup_sock = GNUNET_YES;
2918 GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL,
2924 s5r->remote_sock = GNUNET_NETWORK_socket_create (AF_INET,
2927 r_sin_addr = (struct in_addr*)(phost->h_addr);
2928 remote_ip = r_sin_addr->s_addr;
2929 memset(&remote_addr, 0, sizeof(remote_addr));
2930 remote_addr.sin_family = AF_INET;
2931 #if HAVE_SOCKADDR_IN_SIN_LEN
2932 remote_addr.sin_len = sizeof (remote_addr);
2934 remote_addr.sin_addr.s_addr = remote_ip;
2935 remote_addr.sin_port = req_port;
2937 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2938 "target server: %s:%u\n", inet_ntoa(remote_addr.sin_addr),
2942 GNUNET_NETWORK_socket_connect ( s5r->remote_sock,
2943 (const struct sockaddr*)&remote_addr,
2944 sizeof (remote_addr)))
2945 && (errno != EINPROGRESS))
2947 GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING, "connect");
2948 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2949 "socket request error...\n");
2950 s_resp->version = 0x05;
2951 s_resp->reply = 0x01;
2953 GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL,
2960 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2961 "new remote connection\n");
2963 s_resp->version = 0x05;
2964 s_resp->reply = 0x00;
2965 s_resp->reserved = 0x00;
2966 s_resp->addr_type = 0x01;
2968 s5r->state = SOCKS5_DATA_TRANSFER;
2971 GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL,
2975 GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL,
2983 if (s5r->state == SOCKS5_DATA_TRANSFER)
2985 if ((s5r->remote_sock == NULL) || (s5r->rbuf_len == 0))
2987 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2988 "Closing connection to client\n");
2989 if (s5r->rtask != GNUNET_SCHEDULER_NO_TASK)
2990 GNUNET_SCHEDULER_cancel (s5r->rtask);
2991 if (s5r->fwdwtask != GNUNET_SCHEDULER_NO_TASK)
2992 GNUNET_SCHEDULER_cancel (s5r->fwdwtask);
2993 if (s5r->fwdrtask != GNUNET_SCHEDULER_NO_TASK)
2994 GNUNET_SCHEDULER_cancel (s5r->fwdrtask);
2995 if (s5r->fwdrtask != GNUNET_SCHEDULER_NO_TASK)
2996 GNUNET_SCHEDULER_cancel (s5r->fwdrtask);
2998 if (s5r->remote_sock != NULL)
2999 GNUNET_NETWORK_socket_close (s5r->remote_sock);
3000 GNUNET_NETWORK_socket_close (s5r->sock);
3005 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3006 "forwarding %d bytes from client\n", s5r->rbuf_len);
3009 GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL,
3011 &do_write_remote, s5r);
3013 if (s5r->fwdrtask == GNUNET_SCHEDULER_NO_TASK)
3016 GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL,
3018 &do_read_remote, s5r);
3028 * Accept new incoming connections
3030 * @param cls the closure
3031 * @param tc the scheduler context
3034 do_accept (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
3036 struct GNUNET_NETWORK_Handle *s;
3037 struct Socks5Request *s5r;
3039 ltask = GNUNET_SCHEDULER_NO_TASK;
3040 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
3043 ltask = GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL,
3047 s = GNUNET_NETWORK_socket_accept (lsock, NULL, NULL);
3051 GNUNET_log_strerror (GNUNET_ERROR_TYPE_ERROR, "accept");
3055 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3056 "Got an inbound connection, waiting for data\n");
3058 s5r = GNUNET_malloc (sizeof (struct Socks5Request));
3060 s5r->state = SOCKS5_INIT;
3061 s5r->wtask = GNUNET_SCHEDULER_NO_TASK;
3062 s5r->fwdwtask = GNUNET_SCHEDULER_NO_TASK;
3063 s5r->fwdrtask = GNUNET_SCHEDULER_NO_TASK;
3064 s5r->rtask = GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL,
3071 * Task run on shutdown
3073 * @param cls closure
3074 * @param tc task context
3077 do_shutdown (void *cls,
3078 const struct GNUNET_SCHEDULER_TaskContext *tc)
3081 struct MhdHttpList *hd;
3082 struct MhdHttpList *tmp_hd;
3083 struct NetworkHandleList *nh;
3084 struct NetworkHandleList *tmp_nh;
3085 struct ProxyCurlTask *ctask;
3086 struct ProxyCurlTask *ctask_tmp;
3087 struct ProxyUploadData *pdata;
3089 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
3090 "Shutting down...\n");
3092 gnutls_global_deinit ();
3094 if (NULL != local_gns_zone)
3095 GNUNET_free (local_gns_zone);
3096 if (NULL != local_private_zone)
3097 GNUNET_free (local_private_zone);
3098 if (NULL != local_shorten_zone)
3099 GNUNET_free (local_shorten_zone);
3101 if (GNUNET_SCHEDULER_NO_TASK != curl_download_task)
3103 GNUNET_SCHEDULER_cancel (curl_download_task);
3104 curl_download_task = GNUNET_SCHEDULER_NO_TASK;
3107 for (hd = mhd_httpd_head; hd != NULL; hd = tmp_hd)
3111 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3112 "Stopping daemon\n");
3114 if (GNUNET_SCHEDULER_NO_TASK != hd->httpd_task)
3116 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3117 "Stopping select task %d\n",
3119 GNUNET_SCHEDULER_cancel (hd->httpd_task);
3120 hd->httpd_task = GNUNET_SCHEDULER_NO_TASK;
3123 if (NULL != hd->daemon)
3125 MHD_stop_daemon (hd->daemon);
3129 for (nh = hd->socket_handles_head; nh != NULL; nh = tmp_nh)
3133 GNUNET_NETWORK_socket_close (nh->h);
3138 if (NULL != hd->proxy_cert)
3140 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3141 "Free certificate\n");
3142 GNUNET_free (hd->proxy_cert);
3148 for (ctask=ctasks_head; ctask != NULL; ctask=ctask_tmp)
3150 ctask_tmp = ctask->next;
3152 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3153 "Cleaning up cURL task\n");
3155 if (ctask->curl != NULL)
3156 curl_easy_cleanup (ctask->curl);
3158 if (NULL != ctask->headers)
3159 curl_slist_free_all (ctask->headers);
3160 if (NULL != ctask->resolver)
3161 curl_slist_free_all (ctask->resolver);
3163 if (NULL != ctask->response)
3164 MHD_destroy_response (ctask->response);
3166 pdata = ctask->upload_data_head;
3168 //FIXME free pdata here
3169 for (; pdata != NULL; pdata = ctask->upload_data_head)
3171 GNUNET_CONTAINER_DLL_remove (ctask->upload_data_head,
3172 ctask->upload_data_tail,
3174 GNUNET_free_non_null (pdata->filename);
3175 GNUNET_free_non_null (pdata->content_type);
3176 GNUNET_free_non_null (pdata->key);
3177 GNUNET_free_non_null (pdata->value);
3178 GNUNET_free (pdata);
3181 GNUNET_free (ctask);
3183 curl_multi_cleanup (curl_multi);
3185 GNUNET_GNS_disconnect (gns_handle);
3190 * Compiles a regex for us
3192 * @param re ptr to re struct
3193 * @param rt the expression to compile
3194 * @return 0 on success
3197 compile_regex (regex_t *re, const char* rt)
3202 status = regcomp (re, rt, REG_EXTENDED|REG_NEWLINE);
3205 regerror (status, re, err, 1024);
3206 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3207 "Regex error compiling '%s': %s\n", rt, err);
3215 * Loads the users local zone key
3217 * @return GNUNET_YES on success
3220 load_local_zone_key (const struct GNUNET_CONFIGURATION_Handle *cfg)
3223 struct GNUNET_CRYPTO_RsaPrivateKey *key = NULL;
3224 struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded pkey;
3225 struct GNUNET_CRYPTO_ShortHashCode *zone = NULL;
3226 struct GNUNET_CRYPTO_ShortHashAsciiEncoded zonename;
3228 if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_filename (cfg, "gns",
3229 "ZONEKEY", &keyfile))
3231 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3232 "Unable to load zone key config value!\n");
3236 if (GNUNET_NO == GNUNET_DISK_file_test (keyfile))
3238 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3239 "Unable to load zone key %s!\n", keyfile);
3240 GNUNET_free(keyfile);
3244 key = GNUNET_CRYPTO_rsa_key_create_from_file (keyfile);
3245 GNUNET_CRYPTO_rsa_key_get_public (key, &pkey);
3246 local_gns_zone = GNUNET_malloc (sizeof (struct GNUNET_CRYPTO_ShortHashCode));
3247 GNUNET_CRYPTO_short_hash(&pkey,
3248 sizeof(struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded),
3250 zone = local_gns_zone;
3251 GNUNET_CRYPTO_short_hash_to_enc (zone, &zonename);
3252 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3253 "Using zone: %s!\n", &zonename);
3254 GNUNET_CRYPTO_rsa_key_free(key);
3255 GNUNET_free(keyfile);
3258 if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_filename (cfg, "gns",
3259 "PRIVATE_ZONEKEY", &keyfile))
3261 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3262 "Unable to load private zone key config value!\n");
3265 if ((NULL != keyfile) && (GNUNET_NO == GNUNET_DISK_file_test (keyfile)))
3267 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3268 "Unable to load private zone key %s!\n", keyfile);
3269 GNUNET_free(keyfile);
3273 key = GNUNET_CRYPTO_rsa_key_create_from_file (keyfile);
3274 GNUNET_CRYPTO_rsa_key_get_public (key, &pkey);
3275 local_private_zone = GNUNET_malloc (sizeof (struct GNUNET_CRYPTO_ShortHashCode));
3276 GNUNET_CRYPTO_short_hash(&pkey,
3277 sizeof(struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded),
3278 local_private_zone);
3279 GNUNET_CRYPTO_short_hash_to_enc (zone, &zonename);
3280 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3281 "Using private zone: %s!\n", &zonename);
3282 GNUNET_CRYPTO_rsa_key_free(key);
3283 GNUNET_free(keyfile);
3287 if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_filename (cfg, "gns",
3288 "SHORTEN_ZONEKEY", &keyfile))
3290 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3291 "Unable to load shorten zone key config value!\n");
3294 if ((NULL != keyfile) && (GNUNET_NO == GNUNET_DISK_file_test (keyfile)))
3296 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3297 "Unable to load shorten zone key %s!\n", keyfile);
3298 GNUNET_free(keyfile);
3302 key = GNUNET_CRYPTO_rsa_key_create_from_file (keyfile);
3303 GNUNET_CRYPTO_rsa_key_get_public (key, &pkey);
3304 local_shorten_zone = GNUNET_malloc (sizeof (struct GNUNET_CRYPTO_ShortHashCode));
3305 GNUNET_CRYPTO_short_hash(&pkey,
3306 sizeof(struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded),
3307 local_shorten_zone);
3308 GNUNET_CRYPTO_short_hash_to_enc (zone, &zonename);
3309 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3310 "Using shorten zone: %s!\n", &zonename);
3311 GNUNET_CRYPTO_rsa_key_free(key);
3312 GNUNET_free(keyfile);
3319 * Main function that will be run
3321 * @param cls closure
3322 * @param args remaining command-line arguments
3323 * @param cfgfile name of the configuration file used (for saving, can be NULL!)
3324 * @param cfg configuration
3327 run (void *cls, char *const *args, const char *cfgfile,
3328 const struct GNUNET_CONFIGURATION_Handle *cfg)
3330 struct sockaddr_in sa;
3331 struct MhdHttpList *hd;
3332 char* cafile_cfg = NULL;
3334 #if !HAVE_MHD_NO_LISTEN_SOCKET
3336 char* proxy_sockfile;
3337 struct sockaddr_un mhd_unix_sock_addr;
3340 curl_multi = curl_multi_init ();
3342 if (NULL == curl_multi)
3344 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3345 "Failed to create cURL multo handle!\n");
3349 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
3351 cafile = cafile_opt;
3354 if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_filename (cfg, "gns-proxy",
3358 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3359 "Unable to load proxy CA config value!\n");
3360 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3361 "No proxy CA provided!\n");
3364 cafile = cafile_cfg;
3366 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3367 "Using %s as CA\n", cafile);
3369 gnutls_global_init ();
3370 gnutls_x509_crt_init (&proxy_ca.cert);
3371 gnutls_x509_privkey_init (&proxy_ca.key);
3373 if ( (GNUNET_OK != load_cert_from_file (proxy_ca.cert, cafile)) ||
3374 (GNUNET_OK != load_key_from_file (proxy_ca.key, cafile)) )
3376 // FIXME: release resources...
3380 GNUNET_free_non_null (cafile_cfg);
3382 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3383 "Loading Template\n");
3385 compile_regex (&re_dotplus, (char*) RE_A_HREF);
3387 gns_handle = GNUNET_GNS_connect (cfg);
3389 if (GNUNET_NO == load_local_zone_key (cfg))
3391 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3392 "Unable to load zone!\n");
3396 if (NULL == gns_handle)
3398 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3399 "Unable to connect to GNS!\n");
3403 memset (&sa, 0, sizeof (sa));
3404 sa.sin_family = AF_INET;
3405 sa.sin_port = htons (port);
3406 #if HAVE_SOCKADDR_IN_SIN_LEN
3407 sa.sin_len = sizeof (sa);
3410 lsock = GNUNET_NETWORK_socket_create (AF_INET,
3414 if ((NULL == lsock) ||
3416 GNUNET_NETWORK_socket_bind (lsock, (const struct sockaddr *) &sa,
3419 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3420 "Failed to create listen socket bound to `%s'",
3421 GNUNET_a2s ((const struct sockaddr *) &sa, sizeof (sa)));
3423 GNUNET_NETWORK_socket_close (lsock);
3427 if (GNUNET_OK != GNUNET_NETWORK_socket_listen (lsock, 5))
3429 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3430 "Failed to listen on socket bound to `%s'",
3431 GNUNET_a2s ((const struct sockaddr *) &sa, sizeof (sa)));
3435 ltask = GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL,
3436 lsock, &do_accept, NULL);
3441 if (0 != curl_global_init (CURL_GLOBAL_WIN32))
3443 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3444 "cURL global init failed!\n");
3448 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3449 "Proxy listens on port %u\n",
3452 mhd_httpd_head = NULL;
3453 mhd_httpd_tail = NULL;
3454 total_mhd_connections = 0;
3455 #ifndef HAVE_MHD_NO_LISTEN_SOCKET
3456 if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_filename (cfg, "gns-proxy",
3460 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3461 "Specify PROXY_UNIXPATH in gns-proxy config section!\n");
3465 mhd_unix_socket = GNUNET_NETWORK_socket_create (AF_UNIX,
3469 if (NULL == mhd_unix_socket)
3471 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3472 "Unable to create unix domain socket!\n");
3476 mhd_unix_sock_addr.sun_family = AF_UNIX;
3477 strcpy (mhd_unix_sock_addr.sun_path, proxy_sockfile);
3480 mhd_unix_sock_addr.sun_path[0] = '\0';
3482 #if HAVE_SOCKADDR_IN_SIN_LEN
3483 mhd_unix_sock_addr.sun_len = (u_char) sizeof (struct sockaddr_un);
3486 len = strlen (proxy_sockfile) + sizeof(AF_UNIX);
3488 GNUNET_free (proxy_sockfile);
3490 if (GNUNET_OK != GNUNET_NETWORK_socket_bind (mhd_unix_socket,
3491 (struct sockaddr*)&mhd_unix_sock_addr,
3494 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3495 "Unable to bind unix domain socket!\n");
3499 if (GNUNET_OK != GNUNET_NETWORK_socket_listen (mhd_unix_socket,
3502 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3503 "Unable to listen on unix domain socket!\n");
3508 hd = GNUNET_malloc (sizeof (struct MhdHttpList));
3509 hd->is_ssl = GNUNET_NO;
3510 strcpy (hd->domain, "");
3511 httpd = MHD_start_daemon (MHD_USE_DEBUG
3512 #if HAVE_MHD_NO_LISTEN_SOCKET
3513 | MHD_USE_NO_LISTEN_SOCKET,
3516 , 4444, //Dummy port
3519 &create_response, hd,
3520 #if !HAVE_MHD_NO_LISTEN_SOCKET
3521 MHD_OPTION_LISTEN_SOCKET, GNUNET_NETWORK_get_fd (mhd_unix_socket),
3523 MHD_OPTION_CONNECTION_LIMIT, MHD_MAX_CONNECTIONS,
3524 MHD_OPTION_CONNECTION_TIMEOUT, (unsigned int) 16,
3525 MHD_OPTION_NOTIFY_COMPLETED,
3527 MHD_OPTION_URI_LOG_CALLBACK, &mhd_log_callback, NULL,
3530 GNUNET_assert (httpd != NULL);
3532 hd->httpd_task = GNUNET_SCHEDULER_NO_TASK;
3534 GNUNET_CONTAINER_DLL_insert (mhd_httpd_head, mhd_httpd_tail, hd);
3538 GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL,
3539 &do_shutdown, NULL);
3545 * The main function for gnunet-gns-proxy.
3547 * @param argc number of arguments from the command line
3548 * @param argv command line arguments
3549 * @return 0 ok, 1 on error
3552 main (int argc, char *const *argv)
3554 static const struct GNUNET_GETOPT_CommandLineOption options[] = {
3556 gettext_noop ("listen on specified port"), 1,
3557 &GNUNET_GETOPT_set_string, &port},
3558 {'a', "authority", NULL,
3559 gettext_noop ("pem file to use as CA"), 1,
3560 &GNUNET_GETOPT_set_string, &cafile_opt},
3561 GNUNET_GETOPT_OPTION_END
3566 if (GNUNET_OK != GNUNET_STRINGS_get_utf8_args (argc, argv, &argc, &argv))
3570 GNUNET_log_setup ("gnunet-gns-proxy", "WARNING", NULL);
3573 GNUNET_PROGRAM_run (argc, argv, "gnunet-gns-proxy",
3574 _("GNUnet GNS proxy"),
3576 &run, NULL)) ? 0 : 1;
3577 GNUNET_free_non_null ((char*)argv);