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 #include <microhttpd.h>
22 #include <curl/curl.h>
23 #include <gnutls/gnutls.h>
24 #include <gnutls/x509.h>
25 #include <gnutls/abstract.h>
26 #include <gnutls/crypto.h>
28 #include "gnunet_util_lib.h"
29 #include "gnunet_gns_service.h"
30 #include "gns_proxy_proto.h"
33 #define HAVE_MHD_NO_LISTEN_SOCKET (MHD_VERSION >= 0x00091401)
35 #define GNUNET_GNS_PROXY_PORT 7777
36 #define MHD_MAX_CONNECTIONS 300
37 #define MAX_HTTP_URI_LENGTH 2048
38 #define POSTBUFFERSIZE 4096
40 /* MHD/cURL defines */
48 #define HTML_HDR_CONTENT "Content-Type: text/html"
50 /* buffer padding for proper RE matching */
51 #define CURL_BUF_PADDING 1000
54 //#define RE_DOTPLUS "<a href=\"http://(([A-Za-z]+[.])+)([+])"
55 #define RE_A_HREF "href=\"https?://(([A-Za-z0-9]+[.])+)([+]|[a-z]+)"
56 #define RE_N_MATCHES 4
58 /* The usual suspects */
60 #define HTTPS_PORT 443
64 * A structure for CA cert/key
69 gnutls_x509_crt_t cert;
72 gnutls_x509_privkey_t key;
75 #define MAX_PEM_SIZE (10 * 1024)
78 * Structure for GNS certificates
80 struct ProxyGNSCertificate
82 /* The certificate as PEM */
83 char cert[MAX_PEM_SIZE];
85 /* The private key as PEM */
86 char key[MAX_PEM_SIZE];
91 * A structure for socks requests
95 /* The client socket */
96 struct GNUNET_NETWORK_Handle *sock;
98 /* The server socket */
99 struct GNUNET_NETWORK_Handle *remote_sock;
101 /* The socks state */
104 /* Client socket read task */
105 GNUNET_SCHEDULER_TaskIdentifier rtask;
107 /* Server socket read task */
108 GNUNET_SCHEDULER_TaskIdentifier fwdrtask;
110 /* Client socket write task */
111 GNUNET_SCHEDULER_TaskIdentifier wtask;
113 /* Server socket write task */
114 GNUNET_SCHEDULER_TaskIdentifier fwdwtask;
122 /* Length of data in read buffer */
123 unsigned int rbuf_len;
125 /* Length of data in write buffer */
126 unsigned int wbuf_len;
128 /* This handle is scheduled for cleanup? */
131 /* Shall we close the client socket on cleanup? */
136 * DLL for Network Handles
138 struct NetworkHandleList
141 struct NetworkHandleList *next;
144 struct NetworkHandleList *prev;
147 struct GNUNET_NETWORK_Handle *h;
151 * A structure for all running Httpds
156 struct MhdHttpList *prev;
159 struct MhdHttpList *next;
161 /* is this an ssl daemon? */
164 /* the domain name to server (only important for SSL) */
167 /* The daemon handle */
168 struct MHD_Daemon *daemon;
170 /* Optional proxy certificate used */
171 struct ProxyGNSCertificate *proxy_cert;
174 GNUNET_SCHEDULER_TaskIdentifier httpd_task;
176 /* Handles associated with this daemon */
177 struct NetworkHandleList *socket_handles_head;
179 /* Handles associated with this daemon */
180 struct NetworkHandleList *socket_handles_tail;
184 * A structure for MHD<->cURL streams
189 struct ProxyCurlTask *prev;
192 struct ProxyCurlTask *next;
197 /* Optional header replacements for curl (LEHO) */
198 struct curl_slist *headers;
200 /* Optional resolver replacements for curl (LEHO) */
201 struct curl_slist *resolver;
203 /* curl response code */
204 long curl_response_code;
206 /* The URL to fetch */
207 char url[MAX_HTTP_URI_LENGTH];
209 /* The cURL write buffer / MHD read buffer */
210 char buffer[CURL_MAX_WRITE_SIZE + CURL_BUF_PADDING];
212 /* Read pos of the data in the buffer */
213 char *buffer_read_ptr;
215 /* Write pos in the buffer */
216 char *buffer_write_ptr;
219 struct MHD_Connection *connection;
222 size_t put_read_offset;
223 size_t put_read_size;
226 struct MHD_PostProcessor *post_handler;
229 struct ProxyUploadData *upload_data_head;
230 struct ProxyUploadData *upload_data_tail;
232 /* the type of POST encoding */
235 struct curl_httppost *httppost;
237 struct curl_httppost *httppost_last;
239 /* Number of bytes in buffer */
240 unsigned int bytes_in_buffer;
243 GNUNET_SCHEDULER_TaskIdentifier pp_task;
246 struct ProxyREMatch *pp_match_head;
249 struct ProxyREMatch *pp_match_tail;
251 /* The associated daemon list entry */
252 struct MhdHttpList *mhd;
254 /* The associated response */
255 struct MHD_Response *response;
258 struct ProxySetCookieHeader *set_cookies_head;
261 struct ProxySetCookieHeader *set_cookies_tail;
263 /* The authority of the corresponding host (site of origin) */
266 /* The hostname (Host header field) */
269 /* The LEgacy HOstname (can be empty) */
275 /* The buffer status (BUF_WAIT_FOR_CURL or BUF_WAIT_FOR_MHD) */
276 enum BufferStatus buf_status;
278 /* connection status */
281 /* is curl running? */
287 /* Already accepted */
290 /* Indicates wheather the download is in progress */
291 int download_in_progress;
293 /* Indicates wheather the download was successful */
294 int download_is_finished;
296 /* Indicates wheather the download failed */
299 /* Indicates wheather we need to parse HTML */
302 /* Indicates wheather we are postprocessing the HTML right now */
303 int is_postprocessing;
305 /* Indicates wheather postprocessing has finished */
315 * Struct for RE matches in postprocessing of HTML
320 struct ProxyREMatch *next;
323 struct ProxyREMatch *prev;
325 /* start of match in buffer */
328 /* end of match in buffer */
331 /* associated proxycurltask */
332 struct ProxyCurlTask *ctask;
341 struct GNUNET_GNS_ShortenRequest *shorten_task;
352 * Struct for set-cookies
354 struct ProxySetCookieHeader
357 struct ProxySetCookieHeader *next;
360 struct ProxySetCookieHeader *prev;
367 * Post data structure
369 struct ProxyUploadData
372 struct ProxyUploadData *next;
375 struct ProxyUploadData *prev;
383 size_t content_length;
396 /* The port the proxy is running on (default 7777) */
397 static unsigned long port = GNUNET_GNS_PROXY_PORT;
399 /* The CA file (pem) to use for the proxy CA */
400 static char* cafile_opt;
402 /* The listen socket of the proxy */
403 static struct GNUNET_NETWORK_Handle *lsock;
405 /* The listen task ID */
406 static GNUNET_SCHEDULER_TaskIdentifier ltask;
408 /* The cURL download task */
409 static GNUNET_SCHEDULER_TaskIdentifier curl_download_task;
411 /* The non SSL httpd daemon handle */
412 static struct MHD_Daemon *httpd;
414 /* Number of current mhd connections */
415 static unsigned int total_mhd_connections;
417 /* The cURL multi handle */
418 static CURLM *curl_multi;
420 /* Handle to the GNS service */
421 static struct GNUNET_GNS_Handle *gns_handle;
423 /* DLL for ProxyCurlTasks */
424 static struct ProxyCurlTask *ctasks_head;
426 /* DLL for ProxyCurlTasks */
427 static struct ProxyCurlTask *ctasks_tail;
429 /* DLL for http daemons */
430 static struct MhdHttpList *mhd_httpd_head;
432 /* DLL for http daemons */
433 static struct MhdHttpList *mhd_httpd_tail;
435 /* Handle to the regex for dotplus (.+) replacement in HTML */
436 static regex_t re_dotplus;
438 /* The users local GNS zone hash */
439 static struct GNUNET_CRYPTO_ShortHashCode *local_gns_zone;
441 /* The users local private zone */
442 static struct GNUNET_CRYPTO_ShortHashCode *local_private_zone;
444 /* The users local shorten zone */
445 static struct GNUNET_CRYPTO_ShortHashCode *local_shorten_zone;
447 /* The CA for SSL certificate generation */
448 static struct ProxyCA proxy_ca;
450 /* UNIX domain socket for mhd */
451 #if !HAVE_MHD_NO_LISTEN_SOCKET
452 static struct GNUNET_NETWORK_Handle *mhd_unix_socket;
455 /* Shorten zone private key */
456 static struct GNUNET_CRYPTO_RsaPrivateKey *shorten_zonekey;
460 * Checks if name is in tld
462 * @param name the name to check
463 * @param tld the TLD to check for (must NOT begin with ".")
464 * @return GNUNET_YES or GNUNET_NO
467 is_tld (const char* name, const char* tld)
469 size_t name_len = strlen (name);
470 size_t tld_len = strlen (tld);
472 GNUNET_break ('.' != tld[0]);
473 return ( (tld_len < name_len) &&
474 ( ('.' == name[name_len - tld_len - 1]) || (name_len == tld_len) ) &&
476 name + (name_len - tld_len),
482 * convert integer to string representation
485 * @return the character
488 i_to_hexchar (unsigned char i)
490 static char hexmap[] = "0123456789abcdef";
492 GNUNET_assert (sizeof (hexmap) > (i & 15));
493 return hexmap[i & 15];
498 // FIXME: use cURL API
499 * Escape given 0-terminated string
501 * @param to_esc string to escapse
502 * @return allocated new escaped string (MUST free!)
505 escape_to_urlenc (const char *to_esc)
507 char *pos = (char*)to_esc;
508 char *res = GNUNET_malloc (strlen (to_esc) * 3 + 1);
513 if (isalnum (*pos) ||
514 ('-' == *pos) || ('_' == *pos) ||
515 ('.' == *pos) || ('~' == *pos))
517 else if (' ' == *pos)
522 *rpos++ = i_to_hexchar (*pos >> 4);
523 *rpos++ = i_to_hexchar (*pos >> 15);
533 con_post_data_iter (void *cls,
534 enum MHD_ValueKind kind,
536 const char *filename,
537 const char *content_type,
538 const char *transfer_encoding,
543 struct ProxyCurlTask* ctask = cls;
544 struct ProxyUploadData* pdata;
548 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
549 "Got POST data (file: %s, content type: %s): '%s=%.*s' at offset %llu size %llu\n",
550 filename, content_type,
551 key, (int) size, data,
552 (unsigned long long) off,
553 (unsigned long long) size);
554 GNUNET_assert (NULL != ctask->post_type);
556 if (0 == strcasecmp (MHD_HTTP_POST_ENCODING_MULTIPART_FORMDATA,
559 ctask->is_httppost = GNUNET_YES;
563 pdata = GNUNET_malloc (sizeof (struct ProxyUploadData));
564 pdata->key = GNUNET_strdup (key);
566 if (NULL != filename)
567 pdata->filename = GNUNET_strdup (filename);
568 if (NULL != content_type)
569 pdata->content_type = GNUNET_strdup (content_type);
570 pdata->value = GNUNET_malloc (size);
571 pdata->total_bytes = size;
572 memcpy (pdata->value, data, size);
573 GNUNET_CONTAINER_DLL_insert_tail (ctask->upload_data_head,
574 ctask->upload_data_tail,
577 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
578 "Copied %llu bytes of POST Data\n",
579 (unsigned long long) size);
583 pdata = ctask->upload_data_tail;
584 new_value = GNUNET_malloc (size + pdata->total_bytes);
585 memcpy (new_value, pdata->value, pdata->total_bytes);
586 memcpy (new_value+off, data, size);
587 GNUNET_free (pdata->value);
588 pdata->value = new_value;
589 pdata->total_bytes += size;
594 if (0 != strcasecmp (MHD_HTTP_POST_ENCODING_FORM_URLENCODED,
600 ctask->is_httppost = GNUNET_NO;
602 if (NULL != ctask->curl)
603 curl_easy_pause (ctask->curl, CURLPAUSE_CONT);
608 pdata = GNUNET_malloc (sizeof (struct ProxyUploadData));
609 enc = escape_to_urlenc (key);
610 pdata->value = GNUNET_malloc (strlen (enc) + 3);
611 if (NULL != ctask->upload_data_head)
613 pdata->value[0] = '&';
614 memcpy (pdata->value+1, enc, strlen (enc));
617 memcpy (pdata->value, enc, strlen (enc));
618 pdata->value[strlen (pdata->value)] = '=';
619 pdata->bytes_left = strlen (pdata->value);
620 pdata->total_bytes = pdata->bytes_left;
623 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
624 "Escaped POST key: '%s'\n",
627 GNUNET_CONTAINER_DLL_insert_tail (ctask->upload_data_head,
628 ctask->upload_data_tail,
633 pdata = GNUNET_malloc (sizeof (struct ProxyUploadData));
634 enc = escape_to_urlenc (data);
635 pdata->value = GNUNET_malloc (strlen (enc) + 1);
636 memcpy (pdata->value, enc, strlen (enc));
637 pdata->bytes_left = strlen (pdata->value);
638 pdata->total_bytes = pdata->bytes_left;
641 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
642 "Escaped POST value: '%s'\n",
645 GNUNET_CONTAINER_DLL_insert_tail (ctask->upload_data_head,
646 ctask->upload_data_tail,
653 * Read HTTP request header field 'Host'
655 * @param cls buffer to write to
656 * @param kind value kind
657 * @param key field key
658 * @param value field value
659 * @return MHD_NO when Host found
662 con_val_iter (void *cls,
663 enum MHD_ValueKind kind,
667 struct ProxyCurlTask *ctask = cls;
668 char* buf = ctask->host;
674 if (0 == strcmp ("Host", key))
676 port = strchr (value, ':');
679 strncpy (buf, value, port-value);
681 if ((1 != sscanf (port, "%u", &uport)) ||
682 (uport > UINT16_MAX) ||
684 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
685 "Unable to parse port!\n");
687 ctask->port = (uint16_t) uport;
694 if (0 == strcmp (MHD_HTTP_HEADER_ACCEPT_ENCODING, key))
699 if (0 == strcasecmp (MHD_HTTP_HEADER_CONTENT_TYPE,
702 if (0 == strncasecmp (value,
703 MHD_HTTP_POST_ENCODING_FORM_URLENCODED,
704 strlen (MHD_HTTP_POST_ENCODING_FORM_URLENCODED)))
705 ctask->post_type = MHD_HTTP_POST_ENCODING_FORM_URLENCODED;
706 else if (0 == strncasecmp (value,
707 MHD_HTTP_POST_ENCODING_MULTIPART_FORMDATA,
708 strlen (MHD_HTTP_POST_ENCODING_MULTIPART_FORMDATA)))
709 ctask->post_type = MHD_HTTP_POST_ENCODING_MULTIPART_FORMDATA;
711 ctask->post_type = NULL;
715 cstr = GNUNET_malloc (strlen (key) + strlen (hdr_val) + 3);
716 GNUNET_snprintf (cstr, strlen (key) + strlen (hdr_val) + 3,
717 "%s: %s", key, hdr_val);
719 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
720 "Client Header: %s\n", cstr);
722 ctask->headers = curl_slist_append (ctask->headers, cstr);
730 * Callback for MHD response
733 * @param pos in buffer
735 * @param max space in buffer
736 * @return number of bytes written
739 mhd_content_cb (void *cls,
745 * Check HTTP response header for mime
747 * @param buffer curl buffer
748 * @param size curl blocksize
749 * @param nmemb curl blocknumber
751 * @return size of read bytes
754 curl_check_hdr (void *buffer, size_t size, size_t nmemb, void *cls)
756 size_t bytes = size * nmemb;
757 struct ProxyCurlTask *ctask = cls;
758 int html_mime_len = strlen (HTML_HDR_CONTENT);
759 int cookie_hdr_len = strlen (MHD_HTTP_HEADER_SET_COOKIE);
760 char hdr_mime[html_mime_len+1];
761 char hdr_generic[bytes+1];
762 char new_cookie_hdr[bytes+strlen (ctask->leho)+1];
763 char new_location[MAX_HTTP_URI_LENGTH+500];
773 char cors_hdr[strlen (ctask->leho) + strlen ("https://")];
775 if (NULL == ctask->response)
777 /* FIXME: get total size from curl (if available) */
778 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
779 "Creating response for %s\n", ctask->url);
780 ctask->response = MHD_create_response_from_callback (MHD_SIZE_UNKNOWN,
781 sizeof (ctask->buffer),
786 /* if we have a leho add a CORS header */
787 if (0 != strcmp ("", ctask->leho))
789 /* We could also allow ssl and http here */
790 if (ctask->mhd->is_ssl)
791 sprintf (cors_hdr, "https://%s", ctask->leho);
793 sprintf (cors_hdr, "http://%s", ctask->leho);
795 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
796 "MHD: Adding CORS header field %s\n",
799 if (GNUNET_NO == MHD_add_response_header (ctask->response,
800 "Access-Control-Allow-Origin",
803 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
804 "MHD: Error adding CORS header field %s\n",
808 ctask->ready_to_queue = GNUNET_YES;
811 if (html_mime_len <= bytes)
813 memcpy (hdr_mime, buffer, html_mime_len);
814 hdr_mime[html_mime_len] = '\0';
816 if (0 == strcmp (hdr_mime, HTML_HDR_CONTENT))
818 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
819 "Got HTML HTTP response header\n");
820 ctask->parse_content = GNUNET_YES;
824 if (cookie_hdr_len > bytes)
827 memcpy (hdr_generic, buffer, bytes);
828 hdr_generic[bytes] = '\0';
830 if ('\n' == hdr_generic[bytes-1])
831 hdr_generic[bytes-1] = '\0';
833 if (hdr_generic[bytes-2] == '\r')
834 hdr_generic[bytes-2] = '\0';
836 if (0 == memcmp (hdr_generic,
837 MHD_HTTP_HEADER_SET_COOKIE,
840 ndup = GNUNET_strdup (hdr_generic+cookie_hdr_len+1);
841 memset (new_cookie_hdr, 0, sizeof (new_cookie_hdr));
842 tok = strtok (ndup, ";");
844 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
845 "Looking for cookie in : %s\n", hdr_generic);
847 for (; tok != NULL; tok = strtok (NULL, ";"))
849 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
850 "Got Cookie token: %s\n", tok);
851 //memcpy (new_cookie_hdr+offset, tok, strlen (tok));
852 if (0 == memcmp (tok, " domain", strlen (" domain")))
854 cookie_domain = tok + strlen (" domain") + 1;
856 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
857 "Got Set-Cookie Domain: %s\n", cookie_domain);
859 if (strlen (cookie_domain) < strlen (ctask->leho))
861 delta_cdomain = strlen (ctask->leho) - strlen (cookie_domain);
862 if (0 == strcmp (cookie_domain, ctask->leho + (delta_cdomain)))
864 GNUNET_snprintf (new_cookie_hdr+offset,
865 sizeof (new_cookie_hdr),
866 " domain=%s", ctask->authority);
867 offset += strlen (" domain=") + strlen (ctask->authority);
868 new_cookie_hdr[offset] = ';';
873 else if (strlen (cookie_domain) == strlen (ctask->leho))
875 if (0 == strcmp (cookie_domain, ctask->leho))
877 GNUNET_snprintf (new_cookie_hdr+offset,
878 sizeof (new_cookie_hdr),
879 " domain=%s", ctask->host);
880 offset += strlen (" domain=") + strlen (ctask->host);
881 new_cookie_hdr[offset] = ';';
886 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
887 "Cookie domain invalid\n");
891 memcpy (new_cookie_hdr+offset, tok, strlen (tok));
892 offset += strlen (tok);
893 new_cookie_hdr[offset] = ';';
899 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
900 "Got Set-Cookie HTTP header %s\n", new_cookie_hdr);
902 if (GNUNET_NO == MHD_add_response_header (ctask->response,
903 MHD_HTTP_HEADER_SET_COOKIE,
906 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
907 "MHD: Error adding set-cookie header field %s\n",
908 hdr_generic+cookie_hdr_len+1);
913 ndup = GNUNET_strdup (hdr_generic);
914 hdr_type = strtok (ndup, ":");
916 if (NULL == hdr_type)
922 hdr_val = strtok (NULL, "");
932 if (0 == strcasecmp (MHD_HTTP_HEADER_LOCATION, hdr_type))
934 if (ctask->mhd->is_ssl)
936 sprintf (leho_host, "https://%s", ctask->leho);
937 sprintf (real_host, "https://%s", ctask->host);
941 sprintf (leho_host, "http://%s", ctask->leho);
942 sprintf (real_host, "http://%s", ctask->host);
945 if (0 == memcmp (leho_host, hdr_val, strlen (leho_host)))
947 sprintf (new_location, "%s%s", real_host, hdr_val+strlen (leho_host));
948 hdr_val = new_location;
952 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
953 "Trying to set %s: %s\n",
956 if (GNUNET_NO == MHD_add_response_header (ctask->response,
960 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
961 "MHD: Error adding %s header field %s\n",
972 * @param hd a http daemon list entry
975 run_httpd (struct MhdHttpList *hd);
986 * Task run whenever HTTP server operations are pending.
989 * @param tc sched context
993 const struct GNUNET_SCHEDULER_TaskContext *tc);
996 run_mhd_now (struct MhdHttpList *hd)
998 if (GNUNET_SCHEDULER_NO_TASK != hd->httpd_task)
1000 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1001 "MHD: killing old task\n");
1002 GNUNET_SCHEDULER_cancel (hd->httpd_task);
1004 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1005 "MHD: Scheduling MHD now\n");
1006 hd->httpd_task = GNUNET_SCHEDULER_add_now (&do_httpd, hd);
1010 * Ask cURL for the select sets and schedule download
1013 curl_download_prepare (void);
1016 * Callback to free content
1018 * @param cls content to free
1019 * @param tc task context
1022 mhd_content_free (void *cls,
1023 const struct GNUNET_SCHEDULER_TaskContext *tc)
1025 struct ProxyCurlTask *ctask = cls;
1026 struct ProxyUploadData *pdata;
1028 GNUNET_assert (NULL == ctask->pp_match_head);
1029 if (NULL != ctask->headers)
1030 curl_slist_free_all (ctask->headers);
1032 if (NULL != ctask->headers)
1033 curl_slist_free_all (ctask->resolver);
1035 if (NULL != ctask->response)
1036 MHD_destroy_response (ctask->response);
1038 if (NULL != ctask->post_handler)
1039 MHD_destroy_post_processor (ctask->post_handler);
1041 if (GNUNET_SCHEDULER_NO_TASK != ctask->pp_task)
1042 GNUNET_SCHEDULER_cancel (ctask->pp_task);
1044 for (pdata = ctask->upload_data_head; NULL != pdata; pdata = ctask->upload_data_head)
1046 GNUNET_CONTAINER_DLL_remove (ctask->upload_data_head,
1047 ctask->upload_data_tail,
1049 GNUNET_free_non_null (pdata->filename);
1050 GNUNET_free_non_null (pdata->content_type);
1051 GNUNET_free_non_null (pdata->key);
1052 GNUNET_free_non_null (pdata->value);
1053 GNUNET_free (pdata);
1055 GNUNET_free (ctask);
1060 * Callback for MHD response
1062 * @param cls closure
1063 * @param pos in buffer
1065 * @param max space in buffer
1066 * @return number of bytes written
1069 mhd_content_cb (void *cls,
1074 struct ProxyCurlTask *ctask = cls;
1075 struct ProxyREMatch *re_match;
1077 size_t bytes_to_copy = ctask->buffer_write_ptr - ctask->buffer_read_ptr;
1079 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1080 "MHD: content cb for %s. To copy: %u\n",
1081 ctask->url, (unsigned int) bytes_to_copy);
1082 if ((GNUNET_YES == ctask->download_is_finished) &&
1083 (GNUNET_NO == ctask->download_error) &&
1084 (0 == bytes_to_copy))
1086 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
1087 "MHD: sending response for %s\n", ctask->url);
1088 ctask->download_in_progress = GNUNET_NO;
1089 run_mhd_now (ctask->mhd);
1090 GNUNET_SCHEDULER_add_now (&mhd_content_free, ctask);
1091 total_mhd_connections--;
1092 return MHD_CONTENT_READER_END_OF_STREAM;
1095 if ((GNUNET_YES == ctask->download_error) &&
1096 (GNUNET_YES == ctask->download_is_finished) &&
1097 (0 == bytes_to_copy))
1099 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
1100 "MHD: sending error response\n");
1101 ctask->download_in_progress = GNUNET_NO;
1102 run_mhd_now (ctask->mhd);
1103 GNUNET_SCHEDULER_add_now (&mhd_content_free, ctask);
1104 total_mhd_connections--;
1105 return MHD_CONTENT_READER_END_WITH_ERROR;
1108 if ( ctask->buf_status == BUF_WAIT_FOR_CURL )
1112 for (re_match = ctask->pp_match_head; NULL != re_match; re_match = ctask->pp_match_head)
1114 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1115 "MHD: Processing PP %s\n",
1116 re_match->hostname);
1117 bytes_to_copy = re_match->start - ctask->buffer_read_ptr;
1118 if (bytes_to_copy+copied > max)
1120 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1121 "MHD: buffer in response too small for %u. Using available space (%d). (%s)\n",
1122 (unsigned int) bytes_to_copy,
1125 memcpy (buf+copied, ctask->buffer_read_ptr, max-copied);
1126 ctask->buffer_read_ptr += max-copied;
1128 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1129 "MHD: copied %d bytes\n", (int) copied);
1133 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1134 "MHD: copying %u bytes to mhd response at offset %d\n",
1135 (unsigned int) bytes_to_copy, ctask->buffer_read_ptr);
1136 memcpy (buf+copied, ctask->buffer_read_ptr, bytes_to_copy);
1137 copied += bytes_to_copy;
1139 if (GNUNET_NO == re_match->done)
1141 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1142 "MHD: Waiting for PP of %s\n", re_match->hostname);
1143 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1144 "MHD: copied %d bytes\n", (int) copied);
1145 ctask->buffer_read_ptr += bytes_to_copy;
1149 if (strlen (re_match->result) > (max - copied))
1151 //FIXME partially copy domain here
1152 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1153 "MHD: buffer in response too small for %s! (%s)\n",
1156 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1157 "MHD: copied %d bytes\n", (int) copied);
1158 ctask->buffer_read_ptr += bytes_to_copy;
1162 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1163 "MHD: Adding PP result %s to buffer\n",
1165 memcpy (buf + copied, re_match->result, strlen (re_match->result));
1166 copied += strlen (re_match->result);
1167 ctask->buffer_read_ptr = re_match->end;
1168 GNUNET_CONTAINER_DLL_remove (ctask->pp_match_head,
1169 ctask->pp_match_tail,
1171 GNUNET_free (re_match);
1174 bytes_to_copy = ctask->buffer_write_ptr - ctask->buffer_read_ptr;
1176 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1177 "MHD: copied: %d left: %u, space left in buf: %d\n",
1179 (unsigned int) bytes_to_copy, (int) (max - copied));
1181 if (GNUNET_NO == ctask->download_is_finished)
1183 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1184 "MHD: Purging buffer\n");
1185 memmove (ctask->buffer, ctask->buffer_read_ptr, bytes_to_copy);
1186 ctask->buffer_read_ptr = ctask->buffer;
1187 ctask->buffer_write_ptr = ctask->buffer + bytes_to_copy;
1188 ctask->buffer[bytes_to_copy] = '\0';
1191 if (bytes_to_copy + copied > max)
1192 bytes_to_copy = max - copied;
1193 memcpy (buf+copied, ctask->buffer_read_ptr, bytes_to_copy);
1194 ctask->buffer_read_ptr += bytes_to_copy;
1195 copied += bytes_to_copy;
1196 ctask->buf_status = BUF_WAIT_FOR_CURL;
1198 if (NULL != ctask->curl)
1199 curl_easy_pause (ctask->curl, CURLPAUSE_CONT);
1201 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1202 "MHD: copied %d bytes\n", (int) copied);
1203 run_mhd_now (ctask->mhd);
1209 * Shorten result callback
1211 * @param cls the proxycurltask
1212 * @param short_name the shortened name (NULL on error)
1215 process_shorten (void* cls, const char* short_name)
1217 struct ProxyREMatch *re_match = cls;
1218 char result[sizeof (re_match->result)];
1220 if (NULL == short_name)
1222 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1223 "PP: Unable to shorten %s\n",
1224 re_match->hostname);
1225 GNUNET_CONTAINER_DLL_remove (re_match->ctask->pp_match_head,
1226 re_match->ctask->pp_match_tail,
1228 GNUNET_free (re_match);
1232 if (0 == strcmp (short_name, re_match->ctask->leho))
1233 strcpy (result, re_match->ctask->host);
1235 strcpy (result, short_name);
1237 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1238 "PP: Shorten %s -> %s\n",
1242 if (re_match->is_ssl)
1243 sprintf (re_match->result, "href=\"https://%s", result);
1245 sprintf (re_match->result, "href=\"http://%s", result);
1247 re_match->done = GNUNET_YES;
1248 run_mhd_now (re_match->ctask->mhd);
1253 * Postprocess data in buffer. From read ptr to write ptr
1255 * @param cls the curlproxytask
1256 * @param tc task context
1259 postprocess_buffer (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
1261 struct ProxyCurlTask *ctask = cls;
1262 struct ProxyREMatch *re_match;
1263 char* re_ptr = ctask->buffer_read_ptr;
1264 char re_hostname[255];
1265 regmatch_t m[RE_N_MATCHES];
1267 ctask->pp_task = GNUNET_SCHEDULER_NO_TASK;
1269 if (GNUNET_YES != ctask->parse_content)
1271 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1272 "PP: Not parsing content\n");
1273 ctask->buf_status = BUF_WAIT_FOR_MHD;
1274 run_mhd_now (ctask->mhd);
1278 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1279 "PP: We need to parse the HTML\n");
1281 /* 0 means match found */
1282 while (0 == regexec (&re_dotplus, re_ptr, RE_N_MATCHES, m, 0))
1284 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1285 "PP: regex match\n");
1287 GNUNET_assert (m[1].rm_so != -1);
1289 memset (re_hostname, 0, sizeof (re_hostname));
1290 memcpy (re_hostname, re_ptr+m[1].rm_so, (m[3].rm_eo-m[1].rm_so));
1293 re_match = GNUNET_malloc (sizeof (struct ProxyREMatch));
1294 re_match->start = re_ptr + m[0].rm_so;
1295 re_match->end = re_ptr + m[3].rm_eo;
1296 re_match->done = GNUNET_NO;
1297 re_match->ctask = ctask;
1299 if ('s' == *(re_ptr+m[1].rm_so-strlen("://")-1)) //FIXME strcmp
1300 re_match->is_ssl = GNUNET_YES;
1302 re_match->is_ssl = GNUNET_NO;
1304 strcpy (re_match->hostname, re_hostname);
1305 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1306 "PP: Got hostname %s\n", re_hostname);
1307 re_ptr += m[3].rm_eo;
1309 if (GNUNET_YES == is_tld (re_match->hostname, GNUNET_GNS_TLD_PLUS))
1311 re_match->hostname[strlen(re_match->hostname)-1] = '\0';
1312 strcpy (re_match->hostname+strlen(re_match->hostname),
1316 re_match->shorten_task = GNUNET_GNS_shorten_zone (gns_handle,
1322 re_match); //FIXME cancel appropriately
1324 GNUNET_CONTAINER_DLL_insert_tail (ctask->pp_match_head,
1325 ctask->pp_match_tail,
1329 ctask->buf_status = BUF_WAIT_FOR_MHD;
1330 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1331 "PP: No more matches\n");
1332 run_mhd_now (ctask->mhd);
1336 * Handle data from cURL
1338 * @param ptr pointer to the data
1339 * @param size number of blocks of data
1340 * @param nmemb blocksize
1341 * @param ctx the curlproxytask
1342 * @return number of bytes handled
1345 curl_download_cb (void *ptr, size_t size, size_t nmemb, void* ctx)
1347 const char *cbuf = ptr;
1348 size_t total = size * nmemb;
1349 struct ProxyCurlTask *ctask = ctx;
1350 size_t buf_space = sizeof (ctask->buffer) -
1351 (ctask->buffer_write_ptr-ctask->buffer);
1353 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1354 "CURL: Got %d. %d free in buffer\n",
1357 if (BUF_WAIT_FOR_CURL != ctask->buf_status)
1358 return CURL_WRITEFUNC_PAUSE;
1360 if (total > (buf_space - CURL_BUF_PADDING))
1362 if (ctask->buf_status == BUF_WAIT_FOR_CURL)
1364 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1365 "CURL: Buffer full starting postprocessing\n");
1366 ctask->buf_status = BUF_WAIT_FOR_PP;
1367 ctask->pp_task = GNUNET_SCHEDULER_add_now (&postprocess_buffer,
1369 return CURL_WRITEFUNC_PAUSE;
1372 /* we should not get called in that case */
1373 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1374 "CURL: called out of context and no space in buffer!\n");
1375 return CURL_WRITEFUNC_PAUSE;
1378 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1379 "CURL: Copying %d bytes to buffer (%s)\n", total, ctask->url);
1380 memcpy (ctask->buffer_write_ptr, cbuf, total);
1381 ctask->bytes_in_buffer += total;
1382 ctask->buffer_write_ptr += total;
1383 ctask->buffer_write_ptr[0] = '\0';
1390 * cURL callback for put data
1393 put_read_callback (void *buf, size_t size, size_t nmemb, void *cls)
1395 struct ProxyCurlTask *ctask = cls;
1396 struct ProxyUploadData *pdata = ctask->upload_data_head;
1397 size_t len = size * nmemb;
1401 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1402 "CURL: put read callback\n");
1405 return CURL_READFUNC_PAUSE;
1408 if (NULL == pdata->value)
1410 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1411 "CURL: Terminating PUT\n");
1413 GNUNET_CONTAINER_DLL_remove (ctask->upload_data_head,
1414 ctask->upload_data_tail,
1416 GNUNET_free (pdata);
1420 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1421 "CURL: read callback value %s\n", pdata->value);
1423 to_copy = pdata->bytes_left;
1427 pos = pdata->value + (pdata->total_bytes - pdata->bytes_left);
1428 memcpy (buf, pos, to_copy);
1429 pdata->bytes_left -= to_copy;
1430 if (pdata->bytes_left <= 0)
1432 GNUNET_free (pdata->value);
1433 GNUNET_CONTAINER_DLL_remove (ctask->upload_data_head,
1434 ctask->upload_data_tail,
1436 GNUNET_free (pdata);
1443 * cURL callback for post data
1446 post_read_callback (void *buf, size_t size, size_t nmemb, void *cls)
1448 struct ProxyCurlTask *ctask = cls;
1449 struct ProxyUploadData *pdata = ctask->upload_data_head;
1450 size_t len = size * nmemb;
1454 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1455 "CURL: read callback\n");
1458 return CURL_READFUNC_PAUSE;
1461 if (NULL == pdata->value)
1463 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1464 "CURL: Terminating POST data\n");
1466 GNUNET_CONTAINER_DLL_remove (ctask->upload_data_head,
1467 ctask->upload_data_tail,
1469 GNUNET_free (pdata);
1473 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1474 "CURL: read callback value %s\n", pdata->value);
1476 to_copy = pdata->bytes_left;
1480 pos = pdata->value + (pdata->total_bytes - pdata->bytes_left);
1481 memcpy (buf, pos, to_copy);
1482 pdata->bytes_left -= to_copy;
1483 if (pdata->bytes_left <= 0)
1485 GNUNET_free (pdata->value);
1486 GNUNET_CONTAINER_DLL_remove (ctask->upload_data_head,
1487 ctask->upload_data_tail,
1489 GNUNET_free (pdata);
1495 * Task that is run when we are ready to receive more data
1498 * @param cls closure
1499 * @param tc task context
1502 curl_task_download (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
1505 * Ask cURL for the select sets and schedule download
1508 curl_download_prepare ()
1515 struct GNUNET_NETWORK_FDSet *grs;
1516 struct GNUNET_NETWORK_FDSet *gws;
1518 struct GNUNET_TIME_Relative rtime;
1524 mret = curl_multi_fdset (curl_multi, &rs, &ws, &es, &max);
1526 if (mret != CURLM_OK)
1528 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1529 "%s failed at %s:%d: `%s'\n",
1530 "curl_multi_fdset", __FILE__, __LINE__,
1531 curl_multi_strerror (mret));
1532 //TODO cleanup here?
1536 mret = curl_multi_timeout (curl_multi, &to);
1537 rtime = GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MILLISECONDS, to);
1539 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1540 "cURL multi fds: max=%d timeout=%llu\n", max, to);
1542 grs = GNUNET_NETWORK_fdset_create ();
1543 gws = GNUNET_NETWORK_fdset_create ();
1544 GNUNET_NETWORK_fdset_copy_native (grs, &rs, max + 1);
1545 GNUNET_NETWORK_fdset_copy_native (gws, &ws, max + 1);
1546 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1547 "Scheduling task cURL\n");
1549 if (curl_download_task != GNUNET_SCHEDULER_NO_TASK)
1550 GNUNET_SCHEDULER_cancel (curl_download_task);
1554 curl_download_task =
1555 GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT,
1558 &curl_task_download, curl_multi);
1560 else if (NULL != ctasks_head)
1562 /* as specified in curl docs */
1563 curl_download_task = GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_MILLISECONDS,
1564 &curl_task_download,
1567 GNUNET_NETWORK_fdset_destroy (gws);
1568 GNUNET_NETWORK_fdset_destroy (grs);
1573 * Task that is run when we are ready to receive more data
1576 * @param cls closure
1577 * @param tc task context
1580 curl_task_download (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
1584 struct CURLMsg *msg;
1586 struct ProxyCurlTask *ctask;
1590 struct ProxyCurlTask *clean_head = NULL;
1591 struct ProxyCurlTask *clean_tail = NULL;
1593 curl_download_task = GNUNET_SCHEDULER_NO_TASK;
1595 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
1597 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1598 "Shutdown requested while trying to download\n");
1602 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1610 mret = curl_multi_perform (curl_multi, &running);
1612 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1613 "Running curl tasks: %d\n", running);
1615 for (ctask = ctasks_head; NULL != ctask; ctask = ctask->next)
1617 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1618 "CTask: %s\n", ctask->url);
1622 if (num_ctasks != running)
1624 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1625 "%d ctasks, %d curl running\n", num_ctasks, running);
1631 msg = curl_multi_info_read (curl_multi, &msgnum);
1632 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1633 "Messages left: %d\n", msgnum);
1640 if ((msg->data.result != CURLE_OK) &&
1641 (msg->data.result != CURLE_GOT_NOTHING))
1643 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1644 "Download curl failed");
1646 for (ctask = ctasks_head; NULL != ctask; ctask = ctask->next)
1648 if (NULL == ctask->curl)
1651 if (memcmp (msg->easy_handle, ctask->curl, sizeof (CURL)) != 0)
1654 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1655 "CURL: Download failed for task %s: %s.\n",
1657 curl_easy_strerror (msg->data.result));
1658 ctask->download_is_finished = GNUNET_YES;
1659 ctask->download_error = GNUNET_YES;
1660 if (CURLE_OK == curl_easy_getinfo (ctask->curl,
1661 CURLINFO_RESPONSE_CODE,
1663 ctask->curl_response_code = resp_code;
1664 ctask->ready_to_queue = MHD_YES;
1665 ctask->buf_status = BUF_WAIT_FOR_MHD;
1666 run_mhd_now (ctask->mhd);
1668 GNUNET_CONTAINER_DLL_remove (ctasks_head, ctasks_tail,
1670 GNUNET_CONTAINER_DLL_insert (clean_head, clean_tail, ctask);
1673 GNUNET_assert (ctask != NULL);
1677 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1678 "CURL: download completed.\n");
1680 for (ctask = ctasks_head; NULL != ctask; ctask = ctask->next)
1682 if (NULL == ctask->curl)
1685 if (0 != memcmp (msg->easy_handle, ctask->curl, sizeof (CURL)))
1688 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1689 "CURL: completed task %s found.\n", ctask->url);
1690 if (CURLE_OK == curl_easy_getinfo (ctask->curl,
1691 CURLINFO_RESPONSE_CODE,
1693 ctask->curl_response_code = resp_code;
1696 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1697 "CURL: Completed ctask!\n");
1698 if (GNUNET_SCHEDULER_NO_TASK == ctask->pp_task)
1700 ctask->buf_status = BUF_WAIT_FOR_PP;
1701 ctask->pp_task = GNUNET_SCHEDULER_add_now (&postprocess_buffer,
1705 ctask->ready_to_queue = MHD_YES;
1706 ctask->download_is_finished = GNUNET_YES;
1708 /* We MUST not modify the multi handle else we loose messages */
1709 GNUNET_CONTAINER_DLL_remove (ctasks_head, ctasks_tail,
1711 GNUNET_CONTAINER_DLL_insert (clean_head, clean_tail, ctask);
1715 GNUNET_assert (ctask != NULL);
1717 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1718 "CURL: %s\n", curl_easy_strerror(msg->data.result));
1724 } while (msgnum > 0);
1726 for (ctask=clean_head; NULL != ctask; ctask = ctask->next)
1728 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1729 "CURL: Removing task %s.\n", ctask->url);
1730 curl_multi_remove_handle (curl_multi, ctask->curl);
1731 curl_easy_cleanup (ctask->curl);
1736 for (ctask=ctasks_head; NULL != ctask; ctask = ctask->next)
1739 if (num_ctasks != running)
1741 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1742 "CURL: %d tasks, %d running\n", num_ctasks, running);
1745 GNUNET_assert ( num_ctasks == running );
1747 } while (mret == CURLM_CALL_MULTI_PERFORM);
1749 if (mret != CURLM_OK)
1751 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "CURL: %s failed at %s:%d: `%s'\n",
1752 "curl_multi_perform", __FILE__, __LINE__,
1753 curl_multi_strerror (mret));
1755 curl_download_prepare();
1760 * Process LEHO lookup
1762 * @param cls the ctask
1763 * @param rd_count number of records returned
1764 * @param rd record data
1767 process_leho_lookup (void *cls,
1769 const struct GNUNET_NAMESTORE_RecordData *rd)
1771 struct ProxyCurlTask *ctask = cls;
1772 char hosthdr[262]; //256 + "Host: "
1776 struct hostent *phost;
1778 char resolvename[512];
1781 strcpy (ctask->leho, "");
1784 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1785 "No LEHO present!\n");
1787 for (i=0; i<rd_count; i++)
1789 if (rd[i].record_type != GNUNET_GNS_RECORD_LEHO)
1792 memcpy (ctask->leho, rd[i].data, rd[i].data_size);
1794 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1795 "Found LEHO %s for %s\n", ctask->leho, ctask->url);
1798 if (0 != strcmp (ctask->leho, ""))
1800 sprintf (hosthdr, "%s%s:%d", "Host: ", ctask->leho, ctask->port);
1801 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1802 "New HTTP header value: %s\n", hosthdr);
1803 ctask->headers = curl_slist_append (ctask->headers, hosthdr);
1804 GNUNET_assert (NULL != ctask->headers);
1805 ret = curl_easy_setopt (ctask->curl, CURLOPT_HTTPHEADER, ctask->headers);
1806 if (CURLE_OK != ret)
1808 GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "%s failed at %s:%d: `%s'\n",
1809 "curl_easy_setopt", __FILE__, __LINE__, curl_easy_strerror(ret));
1814 if (ctask->mhd->is_ssl)
1816 phost = (struct hostent*)gethostbyname (ctask->host);
1820 ssl_ip = inet_ntoa(*((struct in_addr*)(phost->h_addr)));
1821 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1822 "SSL target server: %s\n", ssl_ip);
1823 sprintf (resolvename, "%s:%d:%s", ctask->leho, HTTPS_PORT, ssl_ip);
1824 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1825 "Curl resolve: %s\n", resolvename);
1826 ctask->resolver = curl_slist_append ( ctask->resolver, resolvename);
1827 curl_easy_setopt (ctask->curl, CURLOPT_RESOLVE, ctask->resolver);
1828 sprintf (curlurl, "https://%s:%d%s", ctask->leho, ctask->port, ctask->url);
1829 curl_easy_setopt (ctask->curl, CURLOPT_URL, curlurl);
1833 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1834 "gethostbyname failed for %s!\n", ctask->host);
1835 ctask->download_is_finished = GNUNET_YES;
1836 ctask->download_error = GNUNET_YES;
1841 if (CURLM_OK != (mret=curl_multi_add_handle (curl_multi, ctask->curl)))
1843 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1844 "%s failed at %s:%d: `%s'\n",
1845 "curl_multi_add_handle", __FILE__, __LINE__,
1846 curl_multi_strerror (mret));
1847 ctask->download_is_finished = GNUNET_YES;
1848 ctask->download_error = GNUNET_YES;
1851 GNUNET_CONTAINER_DLL_insert (ctasks_head, ctasks_tail, ctask);
1853 curl_download_prepare ();
1858 * Initialize download and trigger curl
1860 * @param cls the proxycurltask
1861 * @param auth_name the name of the authority (site of origin) of ctask->host
1865 process_get_authority (void *cls,
1866 const char* auth_name)
1868 struct ProxyCurlTask *ctask = cls;
1870 if (NULL == auth_name)
1872 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1873 "Get authority failed!\n");
1874 strcpy (ctask->authority, "");
1878 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1879 "Get authority yielded %s\n", auth_name);
1880 strcpy (ctask->authority, auth_name);
1883 GNUNET_GNS_lookup_zone (gns_handle,
1886 GNUNET_GNS_RECORD_LEHO,
1887 GNUNET_YES, //Only cached for performance
1889 &process_leho_lookup,
1894 mhd_log_callback (void* cls, const char* url)
1896 struct ProxyCurlTask *ctask;
1898 ctask = GNUNET_malloc (sizeof (struct ProxyCurlTask));
1899 strcpy (ctask->url, url);
1905 * Main MHD callback for handling requests.
1908 * @param con MHD connection handle
1909 * @param url the url in the request
1910 * @param meth the HTTP method used ("GET", "PUT", etc.)
1911 * @param ver the HTTP version string (i.e. "HTTP/1.1")
1912 * @param upload_data the data being uploaded (excluding HEADERS,
1913 * for a POST that fits into memory and that is encoded
1914 * with a supported encoding, the POST data will NOT be
1915 * given in upload_data and is instead available as
1916 * part of MHD_get_connection_values; very large POST
1917 * data *will* be made available incrementally in
1919 * @param upload_data_size set initially to the size of the
1920 * upload_data provided; the method must update this
1921 * value to the number of bytes NOT processed;
1922 * @param con_cls pointer to location where we store the 'struct Request'
1923 * @return MHD_YES if the connection was handled successfully,
1924 * MHD_NO if the socket must be closed due to a serious
1925 * error while handling the request
1928 create_response (void *cls,
1929 struct MHD_Connection *con,
1933 const char *upload_data,
1934 size_t *upload_data_size,
1937 struct MhdHttpList* hd = cls;
1938 const char* page = "<html><head><title>gnunet-gns-proxy</title>"
1939 "</head><body>cURL fail</body></html>";
1941 char curlurl[MAX_HTTP_URI_LENGTH]; // buffer overflow!
1944 struct ProxyCurlTask *ctask = *con_cls;
1945 struct ProxyUploadData *fin_post;
1946 struct curl_forms forms[5];
1947 struct ProxyUploadData *upload_data_iter;
1950 if ((0 != strcasecmp (meth, MHD_HTTP_METHOD_GET)) &&
1951 (0 != strcasecmp (meth, MHD_HTTP_METHOD_PUT)) &&
1952 (0 != strcasecmp (meth, MHD_HTTP_METHOD_POST)) &&
1953 (0 != strcasecmp (meth, MHD_HTTP_METHOD_HEAD)))
1955 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1956 "MHD: %s NOT IMPLEMENTED!\n", meth);
1961 if (GNUNET_NO == ctask->accepted)
1964 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
1965 "Got %s request for %s\n", meth, url);
1967 ctask->curl = curl_easy_init();
1968 ctask->curl_running = GNUNET_NO;
1969 if (NULL == ctask->curl)
1971 ctask->response = MHD_create_response_from_buffer (strlen (page),
1973 MHD_RESPMEM_PERSISTENT);
1974 ret = MHD_queue_response (con,
1977 MHD_destroy_response (ctask->response);
1978 GNUNET_free (ctask);
1982 if (ctask->mhd->is_ssl)
1983 ctask->port = HTTPS_PORT;
1985 ctask->port = HTTP_PORT;
1987 MHD_get_connection_values (con,
1989 &con_val_iter, ctask);
1991 curl_easy_setopt (ctask->curl, CURLOPT_HEADERFUNCTION, &curl_check_hdr);
1992 curl_easy_setopt (ctask->curl, CURLOPT_HEADERDATA, ctask);
1993 curl_easy_setopt (ctask->curl, CURLOPT_WRITEFUNCTION, &curl_download_cb);
1994 curl_easy_setopt (ctask->curl, CURLOPT_WRITEDATA, ctask);
1995 curl_easy_setopt (ctask->curl, CURLOPT_FOLLOWLOCATION, 0);
1996 curl_easy_setopt (ctask->curl, CURLOPT_IPRESOLVE, CURL_IPRESOLVE_V4);
1998 if (GNUNET_NO == ctask->mhd->is_ssl)
2000 sprintf (curlurl, "http://%s:%d%s", ctask->host, ctask->port, ctask->url);
2001 curl_easy_setopt (ctask->curl, CURLOPT_URL, curlurl);
2005 curl_easy_setopt (ctask->curl, CURLOPT_FAILONERROR, 1);
2006 curl_easy_setopt (ctask->curl, CURLOPT_CONNECTTIMEOUT, 600L);
2007 curl_easy_setopt (ctask->curl, CURLOPT_TIMEOUT, 600L);
2009 /* Add GNS header */
2010 ctask->headers = curl_slist_append (ctask->headers,
2012 ctask->accepted = GNUNET_YES;
2013 ctask->download_in_progress = GNUNET_YES;
2014 ctask->buf_status = BUF_WAIT_FOR_CURL;
2015 ctask->connection = con;
2016 ctask->curl_response_code = MHD_HTTP_OK;
2017 ctask->buffer_read_ptr = ctask->buffer;
2018 ctask->buffer_write_ptr = ctask->buffer;
2019 ctask->pp_task = GNUNET_SCHEDULER_NO_TASK;
2022 if (0 == strcasecmp (meth, MHD_HTTP_METHOD_PUT))
2024 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2025 "Setting up PUT\n");
2027 curl_easy_setopt (ctask->curl, CURLOPT_UPLOAD, 1);
2028 curl_easy_setopt (ctask->curl, CURLOPT_READDATA, ctask);
2029 curl_easy_setopt (ctask->curl, CURLOPT_READFUNCTION, &put_read_callback);
2030 ctask->headers = curl_slist_append (ctask->headers,
2031 "Transfer-Encoding: chunked");
2034 if (0 == strcasecmp (meth, MHD_HTTP_METHOD_POST))
2036 //FIXME handle multipart
2037 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2038 "Setting up POST processor\n");
2039 ctask->post_handler = MHD_create_post_processor (con,
2041 &con_post_data_iter,
2043 ctask->headers = curl_slist_append (ctask->headers,
2044 "Transfer-Encoding: chunked");
2048 if (0 == strcasecmp (meth, MHD_HTTP_METHOD_HEAD))
2050 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2051 "Setting NOBODY\n");
2052 curl_easy_setopt (ctask->curl, CURLOPT_NOBODY, 1);
2056 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2057 "MHD: Adding new curl task for %s\n", ctask->host);
2059 GNUNET_GNS_get_authority (gns_handle,
2061 &process_get_authority,
2063 ctask->ready_to_queue = GNUNET_NO;
2064 ctask->fin = GNUNET_NO;
2065 ctask->curl_running = GNUNET_YES;
2069 ctask = (struct ProxyCurlTask *) *con_cls;
2070 if (0 == strcasecmp (meth, MHD_HTTP_METHOD_POST))
2072 if (0 != *upload_data_size)
2075 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
2076 "Invoking POST processor\n");
2077 MHD_post_process (ctask->post_handler,
2078 upload_data, *upload_data_size);
2079 *upload_data_size = 0;
2080 if ((GNUNET_NO == ctask->is_httppost) &&
2081 (GNUNET_NO == ctask->curl_running))
2083 curl_easy_setopt (ctask->curl, CURLOPT_POST, 1);
2084 curl_easy_setopt (ctask->curl, CURLOPT_READFUNCTION,
2085 &post_read_callback);
2086 curl_easy_setopt (ctask->curl, CURLOPT_READDATA, ctask);
2088 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2089 "MHD: Adding new curl task for %s\n", ctask->host);
2091 GNUNET_GNS_get_authority (gns_handle,
2093 &process_get_authority,
2095 ctask->ready_to_queue = GNUNET_NO;
2096 ctask->fin = GNUNET_NO;
2097 ctask->curl_running = GNUNET_YES;
2101 else if (GNUNET_NO == ctask->post_done)
2103 if (GNUNET_YES == ctask->is_httppost)
2105 for (upload_data_iter = ctask->upload_data_head;
2106 NULL != upload_data_iter;
2107 upload_data_iter = upload_data_iter->next)
2110 if (NULL != upload_data_iter->filename)
2112 forms[i].option = CURLFORM_FILENAME;
2113 forms[i].value = upload_data_iter->filename;
2114 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2115 "Adding filename %s\n",
2119 if (NULL != upload_data_iter->content_type)
2121 forms[i].option = CURLFORM_CONTENTTYPE;
2122 forms[i].value = upload_data_iter->content_type;
2123 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2124 "Adding content type %s\n",
2128 forms[i].option = CURLFORM_PTRCONTENTS;
2129 forms[i].value = upload_data_iter->value;
2130 forms[i+1].option = CURLFORM_END;
2132 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2133 "Adding formdata for %s (len=%lld)\n",
2134 upload_data_iter->key,
2135 upload_data_iter->total_bytes);
2137 curl_formadd(&ctask->httppost, &ctask->httppost_last,
2138 CURLFORM_COPYNAME, upload_data_iter->key,
2139 CURLFORM_CONTENTSLENGTH, upload_data_iter->total_bytes,
2140 CURLFORM_ARRAY, forms,
2143 curl_easy_setopt (ctask->curl, CURLOPT_HTTPPOST,
2146 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2147 "MHD: Adding new curl task for %s\n", ctask->host);
2149 GNUNET_GNS_get_authority (gns_handle,
2151 &process_get_authority,
2153 ctask->ready_to_queue = GNUNET_YES;
2154 ctask->fin = GNUNET_NO;
2155 ctask->curl_running = GNUNET_YES;
2156 ctask->post_done = GNUNET_YES;
2160 fin_post = GNUNET_malloc (sizeof (struct ProxyUploadData));
2161 GNUNET_CONTAINER_DLL_insert_tail (ctask->upload_data_head,
2162 ctask->upload_data_tail,
2164 ctask->post_done = GNUNET_YES;
2169 if (GNUNET_YES != ctask->ready_to_queue)
2170 return MHD_YES; /* wait longer */
2172 if (GNUNET_YES == ctask->fin)
2175 ctask->fin = GNUNET_YES;
2176 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2177 "MHD: Queueing response for %s\n", ctask->url);
2178 ret = MHD_queue_response (con, ctask->curl_response_code, ctask->response);
2179 run_mhd_now (ctask->mhd);
2190 struct MhdHttpList *hd;
2192 for (hd=mhd_httpd_head; NULL != hd; hd = hd->next)
2198 #define UNSIGNED_MHD_LONG_LONG unsigned MHD_LONG_LONG
2204 * @param hd the daemon to run
2207 run_httpd (struct MhdHttpList *hd)
2212 struct GNUNET_NETWORK_FDSet *wrs;
2213 struct GNUNET_NETWORK_FDSet *wws;
2214 struct GNUNET_NETWORK_FDSet *wes;
2217 UNSIGNED_MHD_LONG_LONG timeout;
2218 struct GNUNET_TIME_Relative tv;
2223 wrs = GNUNET_NETWORK_fdset_create ();
2224 wes = GNUNET_NETWORK_fdset_create ();
2225 wws = GNUNET_NETWORK_fdset_create ();
2227 GNUNET_assert (MHD_YES == MHD_get_fdset (hd->daemon, &rs, &ws, &es, &max));
2230 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2231 "MHD fds: max=%d\n", max);
2233 haveto = MHD_get_timeout (hd->daemon, &timeout);
2235 if (MHD_YES == haveto)
2236 tv.rel_value = (uint64_t) timeout;
2238 tv = GNUNET_TIME_UNIT_FOREVER_REL;
2239 GNUNET_NETWORK_fdset_copy_native (wrs, &rs, max + 1);
2240 GNUNET_NETWORK_fdset_copy_native (wws, &ws, max + 1);
2241 GNUNET_NETWORK_fdset_copy_native (wes, &es, max + 1);
2243 if (GNUNET_SCHEDULER_NO_TASK != hd->httpd_task)
2244 GNUNET_SCHEDULER_cancel (hd->httpd_task);
2246 GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_HIGH,
2249 GNUNET_NETWORK_fdset_destroy (wrs);
2250 GNUNET_NETWORK_fdset_destroy (wws);
2251 GNUNET_NETWORK_fdset_destroy (wes);
2256 * Task run whenever HTTP server operations are pending.
2259 * @param tc sched context
2262 do_httpd (void *cls,
2263 const struct GNUNET_SCHEDULER_TaskContext *tc)
2265 struct MhdHttpList *hd = cls;
2267 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2268 "MHD: Main loop\n");
2269 hd->httpd_task = GNUNET_SCHEDULER_NO_TASK;
2270 MHD_run (hd->daemon);
2277 * Read data from socket
2279 * @param cls the closure
2280 * @param tc scheduler context
2283 do_read (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
2286 * Read from remote end
2288 * @param cls closure
2289 * @param tc scheduler context
2292 do_read_remote (void* cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
2295 * Write data to remote socket
2297 * @param cls the closure
2298 * @param tc scheduler context
2301 do_write_remote (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
2303 struct Socks5Request *s5r = cls;
2306 s5r->fwdwtask = GNUNET_SCHEDULER_NO_TASK;
2308 if ((NULL != tc->read_ready) &&
2309 (GNUNET_NETWORK_fdset_isset (tc->write_ready, s5r->remote_sock)) &&
2310 ((len = GNUNET_NETWORK_socket_send (s5r->remote_sock, s5r->rbuf,
2313 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2314 "Successfully sent %d bytes to remote socket\n",
2319 GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING, "write remote");
2320 if (GNUNET_SCHEDULER_NO_TASK != s5r->rtask)
2321 GNUNET_SCHEDULER_cancel (s5r->rtask);
2322 if (GNUNET_SCHEDULER_NO_TASK != s5r->wtask)
2323 GNUNET_SCHEDULER_cancel (s5r->wtask);
2324 if (GNUNET_SCHEDULER_NO_TASK != s5r->fwdrtask)
2325 GNUNET_SCHEDULER_cancel (s5r->fwdrtask);
2326 GNUNET_NETWORK_socket_close (s5r->remote_sock);
2327 GNUNET_NETWORK_socket_close (s5r->sock);
2333 GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL,
2340 * Clean up s5r handles
2342 * @param s5r the handle to destroy
2345 cleanup_s5r (struct Socks5Request *s5r)
2347 if (GNUNET_SCHEDULER_NO_TASK != s5r->rtask)
2348 GNUNET_SCHEDULER_cancel (s5r->rtask);
2349 if (GNUNET_SCHEDULER_NO_TASK != s5r->fwdwtask)
2350 GNUNET_SCHEDULER_cancel (s5r->fwdwtask);
2351 if (GNUNET_SCHEDULER_NO_TASK != s5r->fwdrtask)
2352 GNUNET_SCHEDULER_cancel (s5r->fwdrtask);
2353 if (NULL != s5r->remote_sock)
2354 GNUNET_NETWORK_socket_close (s5r->remote_sock);
2355 if ((NULL != s5r->sock) && (s5r->cleanup_sock == GNUNET_YES))
2356 GNUNET_NETWORK_socket_close (s5r->sock);
2362 * Write data to socket
2364 * @param cls the closure
2365 * @param tc scheduler context
2368 do_write (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
2370 struct Socks5Request *s5r = cls;
2373 s5r->wtask = GNUNET_SCHEDULER_NO_TASK;
2375 if ((NULL != tc->read_ready) &&
2376 (GNUNET_NETWORK_fdset_isset (tc->write_ready, s5r->sock)) &&
2377 ((len = GNUNET_NETWORK_socket_send (s5r->sock, s5r->wbuf,
2380 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2381 "Successfully sent %d bytes to socket\n",
2387 GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING, "write");
2388 s5r->cleanup = GNUNET_YES;
2389 s5r->cleanup_sock = GNUNET_YES;
2395 if (GNUNET_YES == s5r->cleanup)
2401 if ((s5r->state == SOCKS5_DATA_TRANSFER) &&
2402 (s5r->fwdrtask == GNUNET_SCHEDULER_NO_TASK))
2404 GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL,
2406 &do_read_remote, s5r);
2410 * Read from remote end
2412 * @param cls closure
2413 * @param tc scheduler context
2416 do_read_remote (void* cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
2418 struct Socks5Request *s5r = cls;
2420 s5r->fwdrtask = GNUNET_SCHEDULER_NO_TASK;
2423 if ((NULL != tc->write_ready) &&
2424 (GNUNET_NETWORK_fdset_isset (tc->read_ready, s5r->remote_sock)) &&
2425 (s5r->wbuf_len = GNUNET_NETWORK_socket_recv (s5r->remote_sock, s5r->wbuf,
2426 sizeof (s5r->wbuf))))
2428 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2429 "Successfully read %d bytes from remote socket\n",
2434 if (s5r->wbuf_len == 0)
2435 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2436 "0 bytes received from remote... graceful shutdown!\n");
2437 if (s5r->fwdwtask != GNUNET_SCHEDULER_NO_TASK)
2438 GNUNET_SCHEDULER_cancel (s5r->fwdwtask);
2439 if (s5r->rtask != GNUNET_SCHEDULER_NO_TASK)
2440 GNUNET_SCHEDULER_cancel (s5r->rtask);
2442 GNUNET_NETWORK_socket_close (s5r->remote_sock);
2443 s5r->remote_sock = NULL;
2444 GNUNET_NETWORK_socket_close (s5r->sock);
2450 s5r->wtask = GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL,
2458 * Adds a socket to MHD
2460 * @param h the handle to the socket to add
2461 * @param daemon the daemon to add the fd to
2462 * @return whatever MHD_add_connection returns
2465 add_handle_to_mhd (struct GNUNET_NETWORK_Handle *h, struct MHD_Daemon *daemon)
2468 struct sockaddr *addr;
2471 fd = dup (GNUNET_NETWORK_get_fd (h));
2472 addr = GNUNET_NETWORK_get_addr (h);
2473 len = GNUNET_NETWORK_get_addrlen (h);
2475 return MHD_add_connection (daemon, fd, addr, len);
2479 * Read file in filename
2481 * @param filename file to read
2482 * @param size pointer where filesize is stored
2483 * @return NULL on error
2486 load_file (const char* filename,
2493 GNUNET_DISK_file_size (filename, &fsize,
2494 GNUNET_YES, GNUNET_YES))
2496 if (fsize > MAX_PEM_SIZE)
2498 *size = (unsigned int) fsize;
2499 buffer = GNUNET_malloc (*size);
2500 if (fsize != GNUNET_DISK_fn_read (filename, buffer, (size_t) fsize))
2502 GNUNET_free (buffer);
2510 * Load PEM key from file
2512 * @param key where to store the data
2513 * @param keyfile path to the PEM file
2514 * @return GNUNET_OK on success
2517 load_key_from_file (gnutls_x509_privkey_t key, const char* keyfile)
2519 gnutls_datum_t key_data;
2522 key_data.data = load_file (keyfile, &key_data.size);
2523 ret = gnutls_x509_privkey_import (key, &key_data,
2524 GNUTLS_X509_FMT_PEM);
2525 if (GNUTLS_E_SUCCESS != ret)
2527 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2528 _("Unable to import private key from file `%s'\n"),
2532 GNUNET_free (key_data.data);
2533 return (GNUTLS_E_SUCCESS != ret) ? GNUNET_SYSERR : GNUNET_OK;
2538 * Load cert from file
2540 * @param crt struct to store data in
2541 * @param certfile path to pem file
2542 * @return GNUNET_OK on success
2545 load_cert_from_file (gnutls_x509_crt_t crt, char* certfile)
2547 gnutls_datum_t cert_data;
2550 cert_data.data = load_file (certfile, &cert_data.size);
2551 ret = gnutls_x509_crt_import (crt, &cert_data,
2552 GNUTLS_X509_FMT_PEM);
2553 if (GNUTLS_E_SUCCESS != ret)
2555 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2556 _("Unable to import certificate %s\n"), certfile);
2559 GNUNET_free (cert_data.data);
2560 return (GNUTLS_E_SUCCESS != ret) ? GNUNET_SYSERR : GNUNET_OK;
2565 * Generate new certificate for specific name
2567 * @param name the subject name to generate a cert for
2568 * @return a struct holding the PEM data
2570 static struct ProxyGNSCertificate *
2571 generate_gns_certificate (const char *name)
2574 unsigned int serial;
2575 size_t key_buf_size;
2576 size_t cert_buf_size;
2577 gnutls_x509_crt_t request;
2581 ret = gnutls_x509_crt_init (&request);
2583 if (GNUTLS_E_SUCCESS != ret)
2588 GNUNET_break (GNUTLS_E_SUCCESS == gnutls_x509_crt_set_key (request, proxy_ca.key));
2590 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Generating cert\n");
2592 struct ProxyGNSCertificate *pgc =
2593 GNUNET_malloc (sizeof (struct ProxyGNSCertificate));
2595 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Adding DNs\n");
2597 gnutls_x509_crt_set_dn_by_oid (request, GNUTLS_OID_X520_COUNTRY_NAME,
2599 gnutls_x509_crt_set_dn_by_oid (request, GNUTLS_OID_X520_ORGANIZATION_NAME,
2601 gnutls_x509_crt_set_dn_by_oid (request, GNUTLS_OID_X520_COMMON_NAME,
2602 0, name, strlen (name));
2603 GNUNET_break (GNUTLS_E_SUCCESS == gnutls_x509_crt_set_version (request, 3));
2605 ret = gnutls_rnd (GNUTLS_RND_NONCE, &serial, sizeof (serial));
2607 etime = time (NULL);
2608 tm_data = localtime (&etime);
2611 ret = gnutls_x509_crt_set_serial (request,
2615 ret = gnutls_x509_crt_set_activation_time (request,
2618 etime = mktime (tm_data);
2625 ret = gnutls_x509_crt_set_expiration_time (request,
2627 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Signing...\n");
2629 ret = gnutls_x509_crt_sign (request, proxy_ca.cert, proxy_ca.key);
2631 key_buf_size = sizeof (pgc->key);
2632 cert_buf_size = sizeof (pgc->cert);
2634 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Exporting certificate...\n");
2636 gnutls_x509_crt_export (request, GNUTLS_X509_FMT_PEM,
2637 pgc->cert, &cert_buf_size);
2639 gnutls_x509_privkey_export (proxy_ca.key, GNUTLS_X509_FMT_PEM,
2640 pgc->key, &key_buf_size);
2643 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Cleaning up\n");
2644 gnutls_x509_crt_deinit (request);
2652 * Accept policy for mhdaemons
2655 * @param addr the sockaddr
2656 * @param addrlen the sockaddr length
2657 * @return MHD_NO if sockaddr is wrong or #conns too high
2660 accept_cb (void* cls, const struct sockaddr *addr, socklen_t addrlen)
2662 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2663 "In MHD accept policy cb\n");
2667 if (addr->sa_family == AF_UNIX)
2671 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2672 "Connection accepted\n");
2679 * Adds a socket to an SSL MHD instance
2680 * It is important the the domain name is
2681 * correct. In most cases we need to start a new daemon
2683 * @param h the handle to add to a daemon
2684 * @param domain the domain the ssl daemon has to serve
2685 * @return MHD_YES on success
2688 add_handle_to_ssl_mhd (struct GNUNET_NETWORK_Handle *h, const char* domain)
2690 struct MhdHttpList *hd = NULL;
2691 struct ProxyGNSCertificate *pgc;
2692 struct NetworkHandleList *nh;
2694 for (hd = mhd_httpd_head; NULL != hd; hd = hd->next)
2695 if (0 == strcmp (hd->domain, domain))
2700 pgc = generate_gns_certificate (domain);
2702 hd = GNUNET_malloc (sizeof (struct MhdHttpList));
2703 hd->is_ssl = GNUNET_YES;
2704 strcpy (hd->domain, domain);
2705 hd->proxy_cert = pgc;
2708 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2709 "No previous SSL instance found... starting new one for %s\n",
2711 #if HAVE_MHD_NO_LISTEN_SOCKET
2712 hd->daemon = MHD_start_daemon (MHD_USE_DEBUG | MHD_USE_SSL | MHD_USE_NO_LISTEN_SOCKET,
2715 &create_response, hd,
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 hd->daemon = MHD_start_daemon (MHD_USE_DEBUG | MHD_USE_SSL,
2727 4444 /* dummy port */,
2729 &create_response, hd,
2730 MHD_OPTION_LISTEN_SOCKET, GNUNET_NETWORK_get_fd (mhd_unix_socket),
2731 MHD_OPTION_CONNECTION_LIMIT,
2732 MHD_MAX_CONNECTIONS,
2733 MHD_OPTION_CONNECTION_TIMEOUT, (unsigned int) 16,
2734 MHD_OPTION_NOTIFY_COMPLETED, NULL, NULL,
2735 MHD_OPTION_HTTPS_MEM_KEY, pgc->key,
2736 MHD_OPTION_HTTPS_MEM_CERT, pgc->cert,
2737 MHD_OPTION_URI_LOG_CALLBACK, &mhd_log_callback,
2741 GNUNET_assert (hd->daemon != NULL);
2742 hd->httpd_task = GNUNET_SCHEDULER_NO_TASK;
2744 GNUNET_CONTAINER_DLL_insert (mhd_httpd_head, mhd_httpd_tail, hd);
2747 nh = GNUNET_malloc (sizeof (struct NetworkHandleList));
2750 GNUNET_CONTAINER_DLL_insert (hd->socket_handles_head,
2751 hd->socket_handles_tail,
2754 return add_handle_to_mhd (h, hd->daemon);
2760 * Read data from incoming connection
2762 * @param cls the closure
2763 * @param tc the scheduler context
2766 do_read (void* cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
2768 struct Socks5Request *s5r = cls;
2769 struct socks5_client_hello *c_hello;
2770 struct socks5_server_hello *s_hello;
2771 struct socks5_client_request *c_req;
2772 struct socks5_server_response *s_resp;
2778 struct hostent *phost;
2780 struct sockaddr_in remote_addr;
2781 struct in_addr *r_sin_addr;
2783 struct NetworkHandleList *nh;
2785 s5r->rtask = GNUNET_SCHEDULER_NO_TASK;
2787 if ((NULL != tc->write_ready) &&
2788 (GNUNET_NETWORK_fdset_isset (tc->read_ready, s5r->sock)) &&
2789 (s5r->rbuf_len = GNUNET_NETWORK_socket_recv (s5r->sock, s5r->rbuf,
2790 sizeof (s5r->rbuf))))
2792 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2793 "Successfully read %d bytes from socket\n",
2798 if (s5r->rbuf_len != 0)
2799 GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING, "read");
2801 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "client disco!\n");
2803 if (s5r->fwdrtask != GNUNET_SCHEDULER_NO_TASK)
2804 GNUNET_SCHEDULER_cancel (s5r->fwdrtask);
2805 if (s5r->wtask != GNUNET_SCHEDULER_NO_TASK)
2806 GNUNET_SCHEDULER_cancel (s5r->wtask);
2807 if (s5r->fwdwtask != GNUNET_SCHEDULER_NO_TASK)
2808 GNUNET_SCHEDULER_cancel (s5r->fwdwtask);
2809 GNUNET_NETWORK_socket_close (s5r->remote_sock);
2810 GNUNET_NETWORK_socket_close (s5r->sock);
2815 if (s5r->state == SOCKS5_INIT)
2817 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2819 c_hello = (struct socks5_client_hello*)&s5r->rbuf;
2821 GNUNET_assert (c_hello->version == SOCKS_VERSION_5);
2823 s_hello = (struct socks5_server_hello*)&s5r->wbuf;
2824 s5r->wbuf_len = sizeof( struct socks5_server_hello );
2826 s_hello->version = c_hello->version;
2827 s_hello->auth_method = SOCKS_AUTH_NONE;
2829 /* Write response to client */
2830 s5r->wtask = GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL,
2834 s5r->rtask = GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL,
2838 s5r->state = SOCKS5_REQUEST;
2842 if (s5r->state == SOCKS5_REQUEST)
2844 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2845 "Processing SOCKS5 request\n");
2846 c_req = (struct socks5_client_request*)&s5r->rbuf;
2847 s_resp = (struct socks5_server_response*)&s5r->wbuf;
2848 //Only 10byte for ipv4 response!
2849 s5r->wbuf_len = 10;//sizeof (struct socks5_server_response);
2851 GNUNET_assert (c_req->addr_type == 3);
2853 dom_len = *((uint8_t*)(&(c_req->addr_type) + 1));
2854 memset(domain, 0, sizeof(domain));
2855 strncpy(domain, (char*)(&(c_req->addr_type) + 2), dom_len);
2856 req_port = *((uint16_t*)(&(c_req->addr_type) + 2 + dom_len));
2858 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2859 "Requested connection is %s:%d\n",
2863 if (is_tld (domain, GNUNET_GNS_TLD) ||
2864 is_tld (domain, GNUNET_GNS_TLD_ZKEY))
2866 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2867 "Requested connection is gnunet tld\n",
2871 if (ntohs(req_port) == HTTPS_PORT)
2873 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2874 "Requested connection is HTTPS\n");
2875 ret = add_handle_to_ssl_mhd ( s5r->sock, domain );
2877 else if (NULL != httpd)
2879 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2880 "Requested connection is HTTP\n");
2881 nh = GNUNET_malloc (sizeof (struct NetworkHandleList));
2884 GNUNET_CONTAINER_DLL_insert (mhd_httpd_head->socket_handles_head,
2885 mhd_httpd_head->socket_handles_tail,
2888 ret = add_handle_to_mhd ( s5r->sock, httpd );
2893 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2894 _("Failed to start HTTP server\n"));
2895 s_resp->version = 0x05;
2896 s_resp->reply = 0x01;
2897 s5r->cleanup = GNUNET_YES;
2898 s5r->cleanup_sock = GNUNET_YES;
2900 GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL,
2906 /* Signal success */
2907 s_resp->version = 0x05;
2908 s_resp->reply = 0x00;
2909 s_resp->reserved = 0x00;
2910 s_resp->addr_type = 0x01;
2912 s5r->cleanup = GNUNET_YES;
2913 s5r->cleanup_sock = GNUNET_NO;
2915 GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL,
2923 phost = (struct hostent*)gethostbyname (domain);
2926 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2927 "Resolve %s error!\n", domain );
2928 s_resp->version = 0x05;
2929 s_resp->reply = 0x01;
2930 s5r->cleanup = GNUNET_YES;
2931 s5r->cleanup_sock = GNUNET_YES;
2933 GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL,
2939 s5r->remote_sock = GNUNET_NETWORK_socket_create (AF_INET,
2942 r_sin_addr = (struct in_addr*)(phost->h_addr);
2943 remote_ip = r_sin_addr->s_addr;
2944 memset(&remote_addr, 0, sizeof(remote_addr));
2945 remote_addr.sin_family = AF_INET;
2946 #if HAVE_SOCKADDR_IN_SIN_LEN
2947 remote_addr.sin_len = sizeof (remote_addr);
2949 remote_addr.sin_addr.s_addr = remote_ip;
2950 remote_addr.sin_port = req_port;
2952 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2953 "target server: %s:%u\n", inet_ntoa(remote_addr.sin_addr),
2957 GNUNET_NETWORK_socket_connect ( s5r->remote_sock,
2958 (const struct sockaddr*)&remote_addr,
2959 sizeof (remote_addr)))
2960 && (errno != EINPROGRESS))
2962 GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING, "connect");
2963 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2964 "socket request error...\n");
2965 s_resp->version = 0x05;
2966 s_resp->reply = 0x01;
2968 GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL,
2975 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2976 "new remote connection\n");
2978 s_resp->version = 0x05;
2979 s_resp->reply = 0x00;
2980 s_resp->reserved = 0x00;
2981 s_resp->addr_type = 0x01;
2983 s5r->state = SOCKS5_DATA_TRANSFER;
2986 GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL,
2990 GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL,
2998 if (s5r->state == SOCKS5_DATA_TRANSFER)
3000 if ((s5r->remote_sock == NULL) || (s5r->rbuf_len == 0))
3002 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3003 "Closing connection to client\n");
3004 if (s5r->rtask != GNUNET_SCHEDULER_NO_TASK)
3005 GNUNET_SCHEDULER_cancel (s5r->rtask);
3006 if (s5r->fwdwtask != GNUNET_SCHEDULER_NO_TASK)
3007 GNUNET_SCHEDULER_cancel (s5r->fwdwtask);
3008 if (s5r->fwdrtask != GNUNET_SCHEDULER_NO_TASK)
3009 GNUNET_SCHEDULER_cancel (s5r->fwdrtask);
3010 if (s5r->fwdrtask != GNUNET_SCHEDULER_NO_TASK)
3011 GNUNET_SCHEDULER_cancel (s5r->fwdrtask);
3013 if (s5r->remote_sock != NULL)
3014 GNUNET_NETWORK_socket_close (s5r->remote_sock);
3015 GNUNET_NETWORK_socket_close (s5r->sock);
3020 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3021 "forwarding %d bytes from client\n", s5r->rbuf_len);
3024 GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL,
3026 &do_write_remote, s5r);
3028 if (s5r->fwdrtask == GNUNET_SCHEDULER_NO_TASK)
3031 GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL,
3033 &do_read_remote, s5r);
3043 * Accept new incoming connections
3045 * @param cls the closure
3046 * @param tc the scheduler context
3049 do_accept (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
3051 struct GNUNET_NETWORK_Handle *s;
3052 struct Socks5Request *s5r;
3054 ltask = GNUNET_SCHEDULER_NO_TASK;
3055 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
3058 ltask = GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL,
3062 s = GNUNET_NETWORK_socket_accept (lsock, NULL, NULL);
3066 GNUNET_log_strerror (GNUNET_ERROR_TYPE_ERROR, "accept");
3070 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3071 "Got an inbound connection, waiting for data\n");
3073 s5r = GNUNET_malloc (sizeof (struct Socks5Request));
3075 s5r->state = SOCKS5_INIT;
3076 s5r->wtask = GNUNET_SCHEDULER_NO_TASK;
3077 s5r->fwdwtask = GNUNET_SCHEDULER_NO_TASK;
3078 s5r->fwdrtask = GNUNET_SCHEDULER_NO_TASK;
3079 s5r->rtask = GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL,
3086 * Task run on shutdown
3088 * @param cls closure
3089 * @param tc task context
3092 do_shutdown (void *cls,
3093 const struct GNUNET_SCHEDULER_TaskContext *tc)
3096 struct MhdHttpList *hd;
3097 struct MhdHttpList *tmp_hd;
3098 struct NetworkHandleList *nh;
3099 struct NetworkHandleList *tmp_nh;
3100 struct ProxyCurlTask *ctask;
3101 struct ProxyCurlTask *ctask_tmp;
3102 struct ProxyUploadData *pdata;
3104 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
3105 "Shutting down...\n");
3107 gnutls_global_deinit ();
3109 if (NULL != local_gns_zone)
3110 GNUNET_free (local_gns_zone);
3111 if (NULL != local_private_zone)
3112 GNUNET_free (local_private_zone);
3113 if (NULL != local_shorten_zone)
3114 GNUNET_free (local_shorten_zone);
3116 if (GNUNET_SCHEDULER_NO_TASK != curl_download_task)
3118 GNUNET_SCHEDULER_cancel (curl_download_task);
3119 curl_download_task = GNUNET_SCHEDULER_NO_TASK;
3122 for (hd = mhd_httpd_head; hd != NULL; hd = tmp_hd)
3126 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3127 "Stopping daemon\n");
3129 if (GNUNET_SCHEDULER_NO_TASK != hd->httpd_task)
3131 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3132 "Stopping select task %d\n",
3134 GNUNET_SCHEDULER_cancel (hd->httpd_task);
3135 hd->httpd_task = GNUNET_SCHEDULER_NO_TASK;
3138 if (NULL != hd->daemon)
3140 MHD_stop_daemon (hd->daemon);
3144 for (nh = hd->socket_handles_head; nh != NULL; nh = tmp_nh)
3148 GNUNET_NETWORK_socket_close (nh->h);
3153 if (NULL != hd->proxy_cert)
3155 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3156 "Free certificate\n");
3157 GNUNET_free (hd->proxy_cert);
3163 for (ctask=ctasks_head; ctask != NULL; ctask=ctask_tmp)
3165 ctask_tmp = ctask->next;
3167 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3168 "Cleaning up cURL task\n");
3170 if (ctask->curl != NULL)
3171 curl_easy_cleanup (ctask->curl);
3173 if (NULL != ctask->headers)
3174 curl_slist_free_all (ctask->headers);
3175 if (NULL != ctask->resolver)
3176 curl_slist_free_all (ctask->resolver);
3178 if (NULL != ctask->response)
3179 MHD_destroy_response (ctask->response);
3181 pdata = ctask->upload_data_head;
3183 //FIXME free pdata here
3184 for (; pdata != NULL; pdata = ctask->upload_data_head)
3186 GNUNET_CONTAINER_DLL_remove (ctask->upload_data_head,
3187 ctask->upload_data_tail,
3189 GNUNET_free_non_null (pdata->filename);
3190 GNUNET_free_non_null (pdata->content_type);
3191 GNUNET_free_non_null (pdata->key);
3192 GNUNET_free_non_null (pdata->value);
3193 GNUNET_free (pdata);
3196 GNUNET_free (ctask);
3198 curl_multi_cleanup (curl_multi);
3200 GNUNET_GNS_disconnect (gns_handle);
3205 * Compiles a regex for us
3207 * @param re ptr to re struct
3208 * @param rt the expression to compile
3209 * @return 0 on success
3212 compile_regex (regex_t *re, const char* rt)
3217 status = regcomp (re, rt, REG_EXTENDED|REG_NEWLINE);
3220 regerror (status, re, err, 1024);
3221 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3222 "Regex error compiling '%s': %s\n", rt, err);
3230 * Loads the users local zone key
3232 * @return GNUNET_YES on success
3235 load_local_zone_key (const struct GNUNET_CONFIGURATION_Handle *cfg)
3238 struct GNUNET_CRYPTO_RsaPrivateKey *key = NULL;
3239 struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded pkey;
3240 struct GNUNET_CRYPTO_ShortHashCode *zone = NULL;
3241 struct GNUNET_CRYPTO_ShortHashAsciiEncoded zonename;
3243 if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_filename (cfg, "gns",
3244 "ZONEKEY", &keyfile))
3246 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3247 "Unable to load zone key config value!\n");
3251 if (GNUNET_NO == GNUNET_DISK_file_test (keyfile))
3253 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3254 "Unable to load zone key %s!\n", keyfile);
3255 GNUNET_free(keyfile);
3259 key = GNUNET_CRYPTO_rsa_key_create_from_file (keyfile);
3260 GNUNET_CRYPTO_rsa_key_get_public (key, &pkey);
3261 local_gns_zone = GNUNET_malloc (sizeof (struct GNUNET_CRYPTO_ShortHashCode));
3262 GNUNET_CRYPTO_short_hash(&pkey,
3263 sizeof(struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded),
3265 zone = local_gns_zone;
3266 GNUNET_CRYPTO_short_hash_to_enc (zone, &zonename);
3267 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3268 "Using zone: %s!\n", &zonename);
3269 GNUNET_CRYPTO_rsa_key_free(key);
3270 GNUNET_free(keyfile);
3273 if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_filename (cfg, "gns",
3274 "PRIVATE_ZONEKEY", &keyfile))
3276 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3277 "Unable to load private zone key config value!\n");
3280 if ((NULL != keyfile) && (GNUNET_NO == GNUNET_DISK_file_test (keyfile)))
3282 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3283 "Unable to load private zone key %s!\n", keyfile);
3284 GNUNET_free(keyfile);
3288 key = GNUNET_CRYPTO_rsa_key_create_from_file (keyfile);
3289 GNUNET_CRYPTO_rsa_key_get_public (key, &pkey);
3290 local_private_zone = GNUNET_malloc (sizeof (struct GNUNET_CRYPTO_ShortHashCode));
3291 GNUNET_CRYPTO_short_hash(&pkey,
3292 sizeof(struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded),
3293 local_private_zone);
3294 GNUNET_CRYPTO_short_hash_to_enc (zone, &zonename);
3295 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3296 "Using private zone: %s!\n", &zonename);
3297 GNUNET_CRYPTO_rsa_key_free(key);
3298 GNUNET_free(keyfile);
3302 if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_filename (cfg, "gns",
3303 "SHORTEN_ZONEKEY", &keyfile))
3305 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3306 "Unable to load shorten zone key config value!\n");
3309 if ((NULL != keyfile) && (GNUNET_NO == GNUNET_DISK_file_test (keyfile)))
3311 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3312 "Unable to load shorten zone key %s!\n", keyfile);
3313 GNUNET_free(keyfile);
3317 key = GNUNET_CRYPTO_rsa_key_create_from_file (keyfile);
3318 GNUNET_CRYPTO_rsa_key_get_public (key, &pkey);
3319 local_shorten_zone = GNUNET_malloc (sizeof (struct GNUNET_CRYPTO_ShortHashCode));
3320 GNUNET_CRYPTO_short_hash(&pkey,
3321 sizeof(struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded),
3322 local_shorten_zone);
3323 GNUNET_CRYPTO_short_hash_to_enc (zone, &zonename);
3324 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3325 "Using shorten zone: %s!\n", &zonename);
3326 GNUNET_CRYPTO_rsa_key_free(key);
3327 GNUNET_free(keyfile);
3334 * Main function that will be run
3336 * @param cls closure
3337 * @param args remaining command-line arguments
3338 * @param cfgfile name of the configuration file used (for saving, can be NULL!)
3339 * @param cfg configuration
3342 run (void *cls, char *const *args, const char *cfgfile,
3343 const struct GNUNET_CONFIGURATION_Handle *cfg)
3345 struct sockaddr_in sa;
3346 struct MhdHttpList *hd;
3347 char* cafile_cfg = NULL;
3349 #if !HAVE_MHD_NO_LISTEN_SOCKET
3351 char* proxy_sockfile;
3352 struct sockaddr_un mhd_unix_sock_addr;
3355 curl_multi = curl_multi_init ();
3357 if (NULL == curl_multi)
3359 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3360 "Failed to create cURL multo handle!\n");
3364 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
3366 cafile = cafile_opt;
3369 if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_filename (cfg, "gns-proxy",
3373 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3374 "Unable to load proxy CA config value!\n");
3375 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3376 "No proxy CA provided!\n");
3379 cafile = cafile_cfg;
3381 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3382 "Using %s as CA\n", cafile);
3384 gnutls_global_init ();
3385 gnutls_x509_crt_init (&proxy_ca.cert);
3386 gnutls_x509_privkey_init (&proxy_ca.key);
3388 if ( (GNUNET_OK != load_cert_from_file (proxy_ca.cert, cafile)) ||
3389 (GNUNET_OK != load_key_from_file (proxy_ca.key, cafile)) )
3391 // FIXME: release resources...
3395 GNUNET_free_non_null (cafile_cfg);
3397 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3398 "Loading Template\n");
3400 compile_regex (&re_dotplus, (char*) RE_A_HREF);
3402 gns_handle = GNUNET_GNS_connect (cfg);
3404 if (GNUNET_NO == load_local_zone_key (cfg))
3406 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3407 "Unable to load zone!\n");
3411 if (NULL == gns_handle)
3413 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3414 "Unable to connect to GNS!\n");
3418 memset (&sa, 0, sizeof (sa));
3419 sa.sin_family = AF_INET;
3420 sa.sin_port = htons (port);
3421 #if HAVE_SOCKADDR_IN_SIN_LEN
3422 sa.sin_len = sizeof (sa);
3425 lsock = GNUNET_NETWORK_socket_create (AF_INET,
3429 if ((NULL == lsock) ||
3431 GNUNET_NETWORK_socket_bind (lsock, (const struct sockaddr *) &sa,
3434 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3435 "Failed to create listen socket bound to `%s'",
3436 GNUNET_a2s ((const struct sockaddr *) &sa, sizeof (sa)));
3438 GNUNET_NETWORK_socket_close (lsock);
3442 if (GNUNET_OK != GNUNET_NETWORK_socket_listen (lsock, 5))
3444 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3445 "Failed to listen on socket bound to `%s'",
3446 GNUNET_a2s ((const struct sockaddr *) &sa, sizeof (sa)));
3450 ltask = GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL,
3451 lsock, &do_accept, NULL);
3456 if (0 != curl_global_init (CURL_GLOBAL_WIN32))
3458 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3459 "cURL global init failed!\n");
3463 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3464 "Proxy listens on port %u\n",
3467 mhd_httpd_head = NULL;
3468 mhd_httpd_tail = NULL;
3469 total_mhd_connections = 0;
3470 #if ! HAVE_MHD_NO_LISTEN_SOCKET
3471 if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_filename (cfg, "gns-proxy",
3475 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3476 "Specify PROXY_UNIXPATH in gns-proxy config section!\n");
3480 mhd_unix_socket = GNUNET_NETWORK_socket_create (AF_UNIX,
3484 if (NULL == mhd_unix_socket)
3486 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3487 "Unable to create unix domain socket!\n");
3491 mhd_unix_sock_addr.sun_family = AF_UNIX;
3492 strcpy (mhd_unix_sock_addr.sun_path, proxy_sockfile);
3495 mhd_unix_sock_addr.sun_path[0] = '\0';
3497 #if HAVE_SOCKADDR_IN_SIN_LEN
3498 mhd_unix_sock_addr.sun_len = (u_char) sizeof (struct sockaddr_un);
3501 len = strlen (proxy_sockfile) + sizeof(AF_UNIX);
3503 GNUNET_free (proxy_sockfile);
3505 if (GNUNET_OK != GNUNET_NETWORK_socket_bind (mhd_unix_socket,
3506 (struct sockaddr*)&mhd_unix_sock_addr,
3509 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3510 "Unable to bind unix domain socket!\n");
3514 if (GNUNET_OK != GNUNET_NETWORK_socket_listen (mhd_unix_socket,
3517 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3518 "Unable to listen on unix domain socket!\n");
3523 hd = GNUNET_malloc (sizeof (struct MhdHttpList));
3524 hd->is_ssl = GNUNET_NO;
3525 strcpy (hd->domain, "");
3527 #if HAVE_MHD_NO_LISTEN_SOCKET
3528 httpd = MHD_start_daemon (MHD_USE_DEBUG | MHD_USE_NO_LISTEN_SOCKET,
3531 &create_response, hd,
3532 MHD_OPTION_CONNECTION_LIMIT, MHD_MAX_CONNECTIONS,
3533 MHD_OPTION_CONNECTION_TIMEOUT, (unsigned int) 16,
3534 MHD_OPTION_NOTIFY_COMPLETED,
3536 MHD_OPTION_URI_LOG_CALLBACK, &mhd_log_callback, NULL,
3539 httpd = MHD_start_daemon (MHD_USE_DEBUG,
3540 4444 /* Dummy port */,
3542 &create_response, hd,
3543 MHD_OPTION_LISTEN_SOCKET, GNUNET_NETWORK_get_fd (mhd_unix_socket),
3544 MHD_OPTION_CONNECTION_LIMIT, MHD_MAX_CONNECTIONS,
3545 MHD_OPTION_CONNECTION_TIMEOUT, (unsigned int) 16,
3546 MHD_OPTION_NOTIFY_COMPLETED,
3548 MHD_OPTION_URI_LOG_CALLBACK, &mhd_log_callback, NULL,
3552 GNUNET_assert (httpd != NULL);
3554 hd->httpd_task = GNUNET_SCHEDULER_NO_TASK;
3556 GNUNET_CONTAINER_DLL_insert (mhd_httpd_head, mhd_httpd_tail, hd);
3560 GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL,
3561 &do_shutdown, NULL);
3567 * The main function for gnunet-gns-proxy.
3569 * @param argc number of arguments from the command line
3570 * @param argv command line arguments
3571 * @return 0 ok, 1 on error
3574 main (int argc, char *const *argv)
3576 static const struct GNUNET_GETOPT_CommandLineOption options[] = {
3578 gettext_noop ("listen on specified port (default: 7777)"), 1,
3579 &GNUNET_GETOPT_set_ulong, &port},
3580 {'a', "authority", NULL,
3581 gettext_noop ("pem file to use as CA"), 1,
3582 &GNUNET_GETOPT_set_string, &cafile_opt},
3583 GNUNET_GETOPT_OPTION_END
3588 if (GNUNET_OK != GNUNET_STRINGS_get_utf8_args (argc, argv, &argc, &argv))
3592 GNUNET_log_setup ("gnunet-gns-proxy", "WARNING", NULL);
3595 GNUNET_PROGRAM_run (argc, argv, "gnunet-gns-proxy",
3596 _("GNUnet GNS proxy"),
3598 &run, NULL)) ? 0 : 1;
3599 GNUNET_free_non_null ((char*)argv);