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;
1194 if (0 > bytes_to_copy)
1197 memcpy (buf+copied, ctask->buffer_read_ptr, bytes_to_copy);
1198 ctask->buffer_read_ptr += bytes_to_copy;
1199 copied += bytes_to_copy;
1200 ctask->buf_status = BUF_WAIT_FOR_CURL;
1202 if (NULL != ctask->curl)
1203 curl_easy_pause (ctask->curl, CURLPAUSE_CONT);
1205 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1206 "MHD: copied %d bytes\n", (int) copied);
1207 run_mhd_now (ctask->mhd);
1213 * Shorten result callback
1215 * @param cls the proxycurltask
1216 * @param short_name the shortened name (NULL on error)
1219 process_shorten (void* cls, const char* short_name)
1221 struct ProxyREMatch *re_match = cls;
1222 char result[sizeof (re_match->result)];
1224 if (NULL == short_name)
1226 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1227 "PP: Unable to shorten %s\n",
1228 re_match->hostname);
1229 GNUNET_CONTAINER_DLL_remove (re_match->ctask->pp_match_head,
1230 re_match->ctask->pp_match_tail,
1232 GNUNET_free (re_match);
1236 if (0 == strcmp (short_name, re_match->ctask->leho))
1237 strcpy (result, re_match->ctask->host);
1239 strcpy (result, short_name);
1241 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1242 "PP: Shorten %s -> %s\n",
1246 if (re_match->is_ssl)
1247 sprintf (re_match->result, "href=\"https://%s", result);
1249 sprintf (re_match->result, "href=\"http://%s", result);
1251 re_match->done = GNUNET_YES;
1252 run_mhd_now (re_match->ctask->mhd);
1257 * Postprocess data in buffer. From read ptr to write ptr
1259 * @param cls the curlproxytask
1260 * @param tc task context
1263 postprocess_buffer (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
1265 struct ProxyCurlTask *ctask = cls;
1266 struct ProxyREMatch *re_match;
1267 char* re_ptr = ctask->buffer_read_ptr;
1268 char re_hostname[255];
1269 regmatch_t m[RE_N_MATCHES];
1271 ctask->pp_task = GNUNET_SCHEDULER_NO_TASK;
1273 if (GNUNET_YES != ctask->parse_content)
1275 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1276 "PP: Not parsing content\n");
1277 ctask->buf_status = BUF_WAIT_FOR_MHD;
1278 run_mhd_now (ctask->mhd);
1282 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1283 "PP: We need to parse the HTML\n");
1285 /* 0 means match found */
1286 while (0 == regexec (&re_dotplus, re_ptr, RE_N_MATCHES, m, 0))
1288 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1289 "PP: regex match\n");
1291 GNUNET_assert (m[1].rm_so != -1);
1293 memset (re_hostname, 0, sizeof (re_hostname));
1294 memcpy (re_hostname, re_ptr+m[1].rm_so, (m[3].rm_eo-m[1].rm_so));
1297 re_match = GNUNET_malloc (sizeof (struct ProxyREMatch));
1298 re_match->start = re_ptr + m[0].rm_so;
1299 re_match->end = re_ptr + m[3].rm_eo;
1300 re_match->done = GNUNET_NO;
1301 re_match->ctask = ctask;
1303 if ('s' == *(re_ptr+m[1].rm_so-strlen("://")-1)) //FIXME strcmp
1304 re_match->is_ssl = GNUNET_YES;
1306 re_match->is_ssl = GNUNET_NO;
1308 strcpy (re_match->hostname, re_hostname);
1309 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1310 "PP: Got hostname %s\n", re_hostname);
1311 re_ptr += m[3].rm_eo;
1313 if (GNUNET_YES == is_tld (re_match->hostname, GNUNET_GNS_TLD_PLUS))
1315 re_match->hostname[strlen(re_match->hostname)-1] = '\0';
1316 strcpy (re_match->hostname+strlen(re_match->hostname),
1320 re_match->shorten_task = GNUNET_GNS_shorten_zone (gns_handle,
1326 re_match); //FIXME cancel appropriately
1328 GNUNET_CONTAINER_DLL_insert_tail (ctask->pp_match_head,
1329 ctask->pp_match_tail,
1333 ctask->buf_status = BUF_WAIT_FOR_MHD;
1334 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1335 "PP: No more matches\n");
1336 run_mhd_now (ctask->mhd);
1340 * Handle data from cURL
1342 * @param ptr pointer to the data
1343 * @param size number of blocks of data
1344 * @param nmemb blocksize
1345 * @param ctx the curlproxytask
1346 * @return number of bytes handled
1349 curl_download_cb (void *ptr, size_t size, size_t nmemb, void* ctx)
1351 const char *cbuf = ptr;
1352 size_t total = size * nmemb;
1353 struct ProxyCurlTask *ctask = ctx;
1354 size_t buf_space = sizeof (ctask->buffer) -
1355 (ctask->buffer_write_ptr-ctask->buffer);
1357 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1358 "CURL: Got %d. %d free in buffer\n",
1361 if (BUF_WAIT_FOR_CURL != ctask->buf_status)
1362 return CURL_WRITEFUNC_PAUSE;
1364 if (total > (buf_space - CURL_BUF_PADDING))
1366 if (ctask->buf_status == BUF_WAIT_FOR_CURL)
1368 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1369 "CURL: Buffer full starting postprocessing\n");
1370 ctask->buf_status = BUF_WAIT_FOR_PP;
1371 ctask->pp_task = GNUNET_SCHEDULER_add_now (&postprocess_buffer,
1373 return CURL_WRITEFUNC_PAUSE;
1376 /* we should not get called in that case */
1377 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1378 "CURL: called out of context and no space in buffer!\n");
1379 return CURL_WRITEFUNC_PAUSE;
1382 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1383 "CURL: Copying %d bytes to buffer (%s)\n", total, ctask->url);
1384 memcpy (ctask->buffer_write_ptr, cbuf, total);
1385 ctask->bytes_in_buffer += total;
1386 ctask->buffer_write_ptr += total;
1387 ctask->buffer_write_ptr[0] = '\0';
1394 * cURL callback for put data
1397 put_read_callback (void *buf, size_t size, size_t nmemb, void *cls)
1399 struct ProxyCurlTask *ctask = cls;
1400 struct ProxyUploadData *pdata = ctask->upload_data_head;
1401 size_t len = size * nmemb;
1405 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1406 "CURL: put read callback\n");
1409 return CURL_READFUNC_PAUSE;
1412 if (NULL == pdata->value)
1414 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1415 "CURL: Terminating PUT\n");
1417 GNUNET_CONTAINER_DLL_remove (ctask->upload_data_head,
1418 ctask->upload_data_tail,
1420 GNUNET_free (pdata);
1424 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1425 "CURL: read callback value %s\n", pdata->value);
1427 to_copy = pdata->bytes_left;
1431 pos = pdata->value + (pdata->total_bytes - pdata->bytes_left);
1432 memcpy (buf, pos, to_copy);
1433 pdata->bytes_left -= to_copy;
1434 if (pdata->bytes_left <= 0)
1436 GNUNET_free (pdata->value);
1437 GNUNET_CONTAINER_DLL_remove (ctask->upload_data_head,
1438 ctask->upload_data_tail,
1440 GNUNET_free (pdata);
1447 * cURL callback for post data
1450 post_read_callback (void *buf, size_t size, size_t nmemb, void *cls)
1452 struct ProxyCurlTask *ctask = cls;
1453 struct ProxyUploadData *pdata = ctask->upload_data_head;
1454 size_t len = size * nmemb;
1458 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1459 "CURL: read callback\n");
1462 return CURL_READFUNC_PAUSE;
1465 if (NULL == pdata->value)
1467 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1468 "CURL: Terminating POST data\n");
1470 GNUNET_CONTAINER_DLL_remove (ctask->upload_data_head,
1471 ctask->upload_data_tail,
1473 GNUNET_free (pdata);
1477 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1478 "CURL: read callback value %s\n", pdata->value);
1480 to_copy = pdata->bytes_left;
1484 pos = pdata->value + (pdata->total_bytes - pdata->bytes_left);
1485 memcpy (buf, pos, to_copy);
1486 pdata->bytes_left -= to_copy;
1487 if (pdata->bytes_left <= 0)
1489 GNUNET_free (pdata->value);
1490 GNUNET_CONTAINER_DLL_remove (ctask->upload_data_head,
1491 ctask->upload_data_tail,
1493 GNUNET_free (pdata);
1499 * Task that is run when we are ready to receive more data
1502 * @param cls closure
1503 * @param tc task context
1506 curl_task_download (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
1509 * Ask cURL for the select sets and schedule download
1512 curl_download_prepare ()
1519 struct GNUNET_NETWORK_FDSet *grs;
1520 struct GNUNET_NETWORK_FDSet *gws;
1522 struct GNUNET_TIME_Relative rtime;
1528 mret = curl_multi_fdset (curl_multi, &rs, &ws, &es, &max);
1530 if (mret != CURLM_OK)
1532 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1533 "%s failed at %s:%d: `%s'\n",
1534 "curl_multi_fdset", __FILE__, __LINE__,
1535 curl_multi_strerror (mret));
1536 //TODO cleanup here?
1540 mret = curl_multi_timeout (curl_multi, &to);
1541 rtime = GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MILLISECONDS, to);
1543 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1544 "cURL multi fds: max=%d timeout=%llu\n", max, to);
1546 grs = GNUNET_NETWORK_fdset_create ();
1547 gws = GNUNET_NETWORK_fdset_create ();
1548 GNUNET_NETWORK_fdset_copy_native (grs, &rs, max + 1);
1549 GNUNET_NETWORK_fdset_copy_native (gws, &ws, max + 1);
1550 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1551 "Scheduling task cURL\n");
1553 if (curl_download_task != GNUNET_SCHEDULER_NO_TASK)
1554 GNUNET_SCHEDULER_cancel (curl_download_task);
1558 curl_download_task =
1559 GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT,
1562 &curl_task_download, curl_multi);
1564 else if (NULL != ctasks_head)
1566 /* as specified in curl docs */
1567 curl_download_task = GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_MILLISECONDS,
1568 &curl_task_download,
1571 GNUNET_NETWORK_fdset_destroy (gws);
1572 GNUNET_NETWORK_fdset_destroy (grs);
1577 * Task that is run when we are ready to receive more data
1580 * @param cls closure
1581 * @param tc task context
1584 curl_task_download (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
1588 struct CURLMsg *msg;
1590 struct ProxyCurlTask *ctask;
1594 struct ProxyCurlTask *clean_head = NULL;
1595 struct ProxyCurlTask *clean_tail = NULL;
1597 curl_download_task = GNUNET_SCHEDULER_NO_TASK;
1599 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
1601 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1602 "Shutdown requested while trying to download\n");
1606 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1614 mret = curl_multi_perform (curl_multi, &running);
1616 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1617 "Running curl tasks: %d\n", running);
1619 for (ctask = ctasks_head; NULL != ctask; ctask = ctask->next)
1621 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1622 "CTask: %s\n", ctask->url);
1626 if (num_ctasks != running)
1628 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1629 "%d ctasks, %d curl running\n", num_ctasks, running);
1635 msg = curl_multi_info_read (curl_multi, &msgnum);
1636 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1637 "Messages left: %d\n", msgnum);
1644 if ((msg->data.result != CURLE_OK) &&
1645 (msg->data.result != CURLE_GOT_NOTHING))
1647 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1648 "Download curl failed");
1650 for (ctask = ctasks_head; NULL != ctask; ctask = ctask->next)
1652 if (NULL == ctask->curl)
1655 if (memcmp (msg->easy_handle, ctask->curl, sizeof (CURL)) != 0)
1658 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1659 "CURL: Download failed for task %s: %s.\n",
1661 curl_easy_strerror (msg->data.result));
1662 ctask->download_is_finished = GNUNET_YES;
1663 ctask->download_error = GNUNET_YES;
1664 if (CURLE_OK == curl_easy_getinfo (ctask->curl,
1665 CURLINFO_RESPONSE_CODE,
1667 ctask->curl_response_code = resp_code;
1668 ctask->ready_to_queue = MHD_YES;
1669 ctask->buf_status = BUF_WAIT_FOR_MHD;
1670 run_mhd_now (ctask->mhd);
1672 GNUNET_CONTAINER_DLL_remove (ctasks_head, ctasks_tail,
1674 GNUNET_CONTAINER_DLL_insert (clean_head, clean_tail, ctask);
1677 GNUNET_assert (ctask != NULL);
1681 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1682 "CURL: download completed.\n");
1684 for (ctask = ctasks_head; NULL != ctask; ctask = ctask->next)
1686 if (NULL == ctask->curl)
1689 if (0 != memcmp (msg->easy_handle, ctask->curl, sizeof (CURL)))
1692 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1693 "CURL: completed task %s found.\n", ctask->url);
1694 if (CURLE_OK == curl_easy_getinfo (ctask->curl,
1695 CURLINFO_RESPONSE_CODE,
1697 ctask->curl_response_code = resp_code;
1700 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1701 "CURL: Completed ctask!\n");
1702 if (GNUNET_SCHEDULER_NO_TASK == ctask->pp_task)
1704 ctask->buf_status = BUF_WAIT_FOR_PP;
1705 ctask->pp_task = GNUNET_SCHEDULER_add_now (&postprocess_buffer,
1709 ctask->ready_to_queue = MHD_YES;
1710 ctask->download_is_finished = GNUNET_YES;
1712 /* We MUST not modify the multi handle else we loose messages */
1713 GNUNET_CONTAINER_DLL_remove (ctasks_head, ctasks_tail,
1715 GNUNET_CONTAINER_DLL_insert (clean_head, clean_tail, ctask);
1719 GNUNET_assert (ctask != NULL);
1721 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1722 "CURL: %s\n", curl_easy_strerror(msg->data.result));
1728 } while (msgnum > 0);
1730 for (ctask=clean_head; NULL != ctask; ctask = ctask->next)
1732 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1733 "CURL: Removing task %s.\n", ctask->url);
1734 curl_multi_remove_handle (curl_multi, ctask->curl);
1735 curl_easy_cleanup (ctask->curl);
1740 for (ctask=ctasks_head; NULL != ctask; ctask = ctask->next)
1743 if (num_ctasks != running)
1745 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1746 "CURL: %d tasks, %d running\n", num_ctasks, running);
1749 GNUNET_assert ( num_ctasks == running );
1751 } while (mret == CURLM_CALL_MULTI_PERFORM);
1753 if (mret != CURLM_OK)
1755 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "CURL: %s failed at %s:%d: `%s'\n",
1756 "curl_multi_perform", __FILE__, __LINE__,
1757 curl_multi_strerror (mret));
1759 curl_download_prepare();
1764 * Process LEHO lookup
1766 * @param cls the ctask
1767 * @param rd_count number of records returned
1768 * @param rd record data
1771 process_leho_lookup (void *cls,
1773 const struct GNUNET_NAMESTORE_RecordData *rd)
1775 struct ProxyCurlTask *ctask = cls;
1776 char hosthdr[262]; //256 + "Host: "
1780 struct hostent *phost;
1782 char resolvename[512];
1785 strcpy (ctask->leho, "");
1788 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1789 "No LEHO present!\n");
1791 for (i=0; i<rd_count; i++)
1793 if (rd[i].record_type != GNUNET_GNS_RECORD_LEHO)
1796 memcpy (ctask->leho, rd[i].data, rd[i].data_size);
1798 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1799 "Found LEHO %s for %s\n", ctask->leho, ctask->url);
1802 if (0 != strcmp (ctask->leho, ""))
1804 sprintf (hosthdr, "%s%s:%d", "Host: ", ctask->leho, ctask->port);
1805 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1806 "New HTTP header value: %s\n", hosthdr);
1807 ctask->headers = curl_slist_append (ctask->headers, hosthdr);
1808 GNUNET_assert (NULL != ctask->headers);
1809 ret = curl_easy_setopt (ctask->curl, CURLOPT_HTTPHEADER, ctask->headers);
1810 if (CURLE_OK != ret)
1812 GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "%s failed at %s:%d: `%s'\n",
1813 "curl_easy_setopt", __FILE__, __LINE__, curl_easy_strerror(ret));
1818 if (ctask->mhd->is_ssl)
1820 phost = (struct hostent*)gethostbyname (ctask->host);
1824 ssl_ip = inet_ntoa(*((struct in_addr*)(phost->h_addr)));
1825 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1826 "SSL target server: %s\n", ssl_ip);
1827 sprintf (resolvename, "%s:%d:%s", ctask->leho, HTTPS_PORT, ssl_ip);
1828 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1829 "Curl resolve: %s\n", resolvename);
1830 ctask->resolver = curl_slist_append ( ctask->resolver, resolvename);
1831 curl_easy_setopt (ctask->curl, CURLOPT_RESOLVE, ctask->resolver);
1832 sprintf (curlurl, "https://%s:%d%s", ctask->leho, ctask->port, ctask->url);
1833 curl_easy_setopt (ctask->curl, CURLOPT_URL, curlurl);
1837 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1838 "gethostbyname failed for %s!\n", ctask->host);
1839 ctask->download_is_finished = GNUNET_YES;
1840 ctask->download_error = GNUNET_YES;
1845 if (CURLM_OK != (mret=curl_multi_add_handle (curl_multi, ctask->curl)))
1847 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1848 "%s failed at %s:%d: `%s'\n",
1849 "curl_multi_add_handle", __FILE__, __LINE__,
1850 curl_multi_strerror (mret));
1851 ctask->download_is_finished = GNUNET_YES;
1852 ctask->download_error = GNUNET_YES;
1855 GNUNET_CONTAINER_DLL_insert (ctasks_head, ctasks_tail, ctask);
1857 curl_download_prepare ();
1862 * Initialize download and trigger curl
1864 * @param cls the proxycurltask
1865 * @param auth_name the name of the authority (site of origin) of ctask->host
1869 process_get_authority (void *cls,
1870 const char* auth_name)
1872 struct ProxyCurlTask *ctask = cls;
1874 if (NULL == auth_name)
1876 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1877 "Get authority failed!\n");
1878 strcpy (ctask->authority, "");
1882 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1883 "Get authority yielded %s\n", auth_name);
1884 strcpy (ctask->authority, auth_name);
1887 GNUNET_GNS_lookup_zone (gns_handle,
1890 GNUNET_GNS_RECORD_LEHO,
1891 GNUNET_YES, //Only cached for performance
1893 &process_leho_lookup,
1898 mhd_log_callback (void* cls, const char* url)
1900 struct ProxyCurlTask *ctask;
1902 ctask = GNUNET_malloc (sizeof (struct ProxyCurlTask));
1903 strcpy (ctask->url, url);
1909 * Main MHD callback for handling requests.
1912 * @param con MHD connection handle
1913 * @param url the url in the request
1914 * @param meth the HTTP method used ("GET", "PUT", etc.)
1915 * @param ver the HTTP version string (i.e. "HTTP/1.1")
1916 * @param upload_data the data being uploaded (excluding HEADERS,
1917 * for a POST that fits into memory and that is encoded
1918 * with a supported encoding, the POST data will NOT be
1919 * given in upload_data and is instead available as
1920 * part of MHD_get_connection_values; very large POST
1921 * data *will* be made available incrementally in
1923 * @param upload_data_size set initially to the size of the
1924 * upload_data provided; the method must update this
1925 * value to the number of bytes NOT processed;
1926 * @param con_cls pointer to location where we store the 'struct Request'
1927 * @return MHD_YES if the connection was handled successfully,
1928 * MHD_NO if the socket must be closed due to a serious
1929 * error while handling the request
1932 create_response (void *cls,
1933 struct MHD_Connection *con,
1937 const char *upload_data,
1938 size_t *upload_data_size,
1941 struct MhdHttpList* hd = cls;
1942 const char* page = "<html><head><title>gnunet-gns-proxy</title>"
1943 "</head><body>cURL fail</body></html>";
1945 char curlurl[MAX_HTTP_URI_LENGTH]; // buffer overflow!
1948 struct ProxyCurlTask *ctask = *con_cls;
1949 struct ProxyUploadData *fin_post;
1950 struct curl_forms forms[5];
1951 struct ProxyUploadData *upload_data_iter;
1954 if ((0 != strcasecmp (meth, MHD_HTTP_METHOD_GET)) &&
1955 (0 != strcasecmp (meth, MHD_HTTP_METHOD_PUT)) &&
1956 (0 != strcasecmp (meth, MHD_HTTP_METHOD_POST)) &&
1957 (0 != strcasecmp (meth, MHD_HTTP_METHOD_HEAD)))
1959 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1960 "MHD: %s NOT IMPLEMENTED!\n", meth);
1965 if (GNUNET_NO == ctask->accepted)
1968 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
1969 "Got %s request for %s\n", meth, url);
1971 ctask->curl = curl_easy_init();
1972 ctask->curl_running = GNUNET_NO;
1973 if (NULL == ctask->curl)
1975 ctask->response = MHD_create_response_from_buffer (strlen (page),
1977 MHD_RESPMEM_PERSISTENT);
1978 ret = MHD_queue_response (con,
1981 MHD_destroy_response (ctask->response);
1982 GNUNET_free (ctask);
1986 if (ctask->mhd->is_ssl)
1987 ctask->port = HTTPS_PORT;
1989 ctask->port = HTTP_PORT;
1991 MHD_get_connection_values (con,
1993 &con_val_iter, ctask);
1995 curl_easy_setopt (ctask->curl, CURLOPT_HEADERFUNCTION, &curl_check_hdr);
1996 curl_easy_setopt (ctask->curl, CURLOPT_HEADERDATA, ctask);
1997 curl_easy_setopt (ctask->curl, CURLOPT_WRITEFUNCTION, &curl_download_cb);
1998 curl_easy_setopt (ctask->curl, CURLOPT_WRITEDATA, ctask);
1999 curl_easy_setopt (ctask->curl, CURLOPT_FOLLOWLOCATION, 0);
2000 curl_easy_setopt (ctask->curl, CURLOPT_IPRESOLVE, CURL_IPRESOLVE_V4);
2002 if (GNUNET_NO == ctask->mhd->is_ssl)
2004 sprintf (curlurl, "http://%s:%d%s", ctask->host, ctask->port, ctask->url);
2005 curl_easy_setopt (ctask->curl, CURLOPT_URL, curlurl);
2009 curl_easy_setopt (ctask->curl, CURLOPT_FAILONERROR, 1);
2010 curl_easy_setopt (ctask->curl, CURLOPT_CONNECTTIMEOUT, 600L);
2011 curl_easy_setopt (ctask->curl, CURLOPT_TIMEOUT, 600L);
2013 /* Add GNS header */
2014 ctask->headers = curl_slist_append (ctask->headers,
2016 ctask->accepted = GNUNET_YES;
2017 ctask->download_in_progress = GNUNET_YES;
2018 ctask->buf_status = BUF_WAIT_FOR_CURL;
2019 ctask->connection = con;
2020 ctask->curl_response_code = MHD_HTTP_OK;
2021 ctask->buffer_read_ptr = ctask->buffer;
2022 ctask->buffer_write_ptr = ctask->buffer;
2023 ctask->pp_task = GNUNET_SCHEDULER_NO_TASK;
2026 if (0 == strcasecmp (meth, MHD_HTTP_METHOD_PUT))
2028 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2029 "Setting up PUT\n");
2031 curl_easy_setopt (ctask->curl, CURLOPT_UPLOAD, 1);
2032 curl_easy_setopt (ctask->curl, CURLOPT_READDATA, ctask);
2033 curl_easy_setopt (ctask->curl, CURLOPT_READFUNCTION, &put_read_callback);
2034 ctask->headers = curl_slist_append (ctask->headers,
2035 "Transfer-Encoding: chunked");
2038 if (0 == strcasecmp (meth, MHD_HTTP_METHOD_POST))
2040 //FIXME handle multipart
2041 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2042 "Setting up POST processor\n");
2043 ctask->post_handler = MHD_create_post_processor (con,
2045 &con_post_data_iter,
2047 ctask->headers = curl_slist_append (ctask->headers,
2048 "Transfer-Encoding: chunked");
2052 if (0 == strcasecmp (meth, MHD_HTTP_METHOD_HEAD))
2054 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2055 "Setting NOBODY\n");
2056 curl_easy_setopt (ctask->curl, CURLOPT_NOBODY, 1);
2060 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2061 "MHD: Adding new curl task for %s\n", ctask->host);
2063 GNUNET_GNS_get_authority (gns_handle,
2065 &process_get_authority,
2067 ctask->ready_to_queue = GNUNET_NO;
2068 ctask->fin = GNUNET_NO;
2069 ctask->curl_running = GNUNET_YES;
2073 ctask = (struct ProxyCurlTask *) *con_cls;
2074 if (0 == strcasecmp (meth, MHD_HTTP_METHOD_POST))
2076 if (0 != *upload_data_size)
2079 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
2080 "Invoking POST processor\n");
2081 MHD_post_process (ctask->post_handler,
2082 upload_data, *upload_data_size);
2083 *upload_data_size = 0;
2084 if ((GNUNET_NO == ctask->is_httppost) &&
2085 (GNUNET_NO == ctask->curl_running))
2087 curl_easy_setopt (ctask->curl, CURLOPT_POST, 1);
2088 curl_easy_setopt (ctask->curl, CURLOPT_READFUNCTION,
2089 &post_read_callback);
2090 curl_easy_setopt (ctask->curl, CURLOPT_READDATA, ctask);
2092 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2093 "MHD: Adding new curl task for %s\n", ctask->host);
2095 GNUNET_GNS_get_authority (gns_handle,
2097 &process_get_authority,
2099 ctask->ready_to_queue = GNUNET_NO;
2100 ctask->fin = GNUNET_NO;
2101 ctask->curl_running = GNUNET_YES;
2105 else if (GNUNET_NO == ctask->post_done)
2107 if (GNUNET_YES == ctask->is_httppost)
2109 for (upload_data_iter = ctask->upload_data_head;
2110 NULL != upload_data_iter;
2111 upload_data_iter = upload_data_iter->next)
2114 if (NULL != upload_data_iter->filename)
2116 forms[i].option = CURLFORM_FILENAME;
2117 forms[i].value = upload_data_iter->filename;
2118 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2119 "Adding filename %s\n",
2123 if (NULL != upload_data_iter->content_type)
2125 forms[i].option = CURLFORM_CONTENTTYPE;
2126 forms[i].value = upload_data_iter->content_type;
2127 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2128 "Adding content type %s\n",
2132 forms[i].option = CURLFORM_PTRCONTENTS;
2133 forms[i].value = upload_data_iter->value;
2134 forms[i+1].option = CURLFORM_END;
2136 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2137 "Adding formdata for %s (len=%lld)\n",
2138 upload_data_iter->key,
2139 upload_data_iter->total_bytes);
2141 curl_formadd(&ctask->httppost, &ctask->httppost_last,
2142 CURLFORM_COPYNAME, upload_data_iter->key,
2143 CURLFORM_CONTENTSLENGTH, upload_data_iter->total_bytes,
2144 CURLFORM_ARRAY, forms,
2147 curl_easy_setopt (ctask->curl, CURLOPT_HTTPPOST,
2150 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2151 "MHD: Adding new curl task for %s\n", ctask->host);
2153 GNUNET_GNS_get_authority (gns_handle,
2155 &process_get_authority,
2157 ctask->ready_to_queue = GNUNET_YES;
2158 ctask->fin = GNUNET_NO;
2159 ctask->curl_running = GNUNET_YES;
2160 ctask->post_done = GNUNET_YES;
2164 fin_post = GNUNET_malloc (sizeof (struct ProxyUploadData));
2165 GNUNET_CONTAINER_DLL_insert_tail (ctask->upload_data_head,
2166 ctask->upload_data_tail,
2168 ctask->post_done = GNUNET_YES;
2173 if (GNUNET_YES != ctask->ready_to_queue)
2174 return MHD_YES; /* wait longer */
2176 if (GNUNET_YES == ctask->fin)
2179 ctask->fin = GNUNET_YES;
2180 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2181 "MHD: Queueing response for %s\n", ctask->url);
2182 ret = MHD_queue_response (con, ctask->curl_response_code, ctask->response);
2183 run_mhd_now (ctask->mhd);
2194 struct MhdHttpList *hd;
2196 for (hd=mhd_httpd_head; NULL != hd; hd = hd->next)
2202 #define UNSIGNED_MHD_LONG_LONG unsigned MHD_LONG_LONG
2208 * @param hd the daemon to run
2211 run_httpd (struct MhdHttpList *hd)
2216 struct GNUNET_NETWORK_FDSet *wrs;
2217 struct GNUNET_NETWORK_FDSet *wws;
2218 struct GNUNET_NETWORK_FDSet *wes;
2221 UNSIGNED_MHD_LONG_LONG timeout;
2222 struct GNUNET_TIME_Relative tv;
2227 wrs = GNUNET_NETWORK_fdset_create ();
2228 wes = GNUNET_NETWORK_fdset_create ();
2229 wws = GNUNET_NETWORK_fdset_create ();
2231 GNUNET_assert (MHD_YES == MHD_get_fdset (hd->daemon, &rs, &ws, &es, &max));
2234 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2235 "MHD fds: max=%d\n", max);
2237 haveto = MHD_get_timeout (hd->daemon, &timeout);
2239 if (MHD_YES == haveto)
2240 tv.rel_value = (uint64_t) timeout;
2242 tv = GNUNET_TIME_UNIT_FOREVER_REL;
2243 GNUNET_NETWORK_fdset_copy_native (wrs, &rs, max + 1);
2244 GNUNET_NETWORK_fdset_copy_native (wws, &ws, max + 1);
2245 GNUNET_NETWORK_fdset_copy_native (wes, &es, max + 1);
2247 if (GNUNET_SCHEDULER_NO_TASK != hd->httpd_task)
2248 GNUNET_SCHEDULER_cancel (hd->httpd_task);
2250 GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_HIGH,
2253 GNUNET_NETWORK_fdset_destroy (wrs);
2254 GNUNET_NETWORK_fdset_destroy (wws);
2255 GNUNET_NETWORK_fdset_destroy (wes);
2260 * Task run whenever HTTP server operations are pending.
2263 * @param tc sched context
2266 do_httpd (void *cls,
2267 const struct GNUNET_SCHEDULER_TaskContext *tc)
2269 struct MhdHttpList *hd = cls;
2271 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2272 "MHD: Main loop\n");
2273 hd->httpd_task = GNUNET_SCHEDULER_NO_TASK;
2274 MHD_run (hd->daemon);
2281 * Read data from socket
2283 * @param cls the closure
2284 * @param tc scheduler context
2287 do_read (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
2290 * Read from remote end
2292 * @param cls closure
2293 * @param tc scheduler context
2296 do_read_remote (void* cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
2299 * Write data to remote socket
2301 * @param cls the closure
2302 * @param tc scheduler context
2305 do_write_remote (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
2307 struct Socks5Request *s5r = cls;
2310 s5r->fwdwtask = GNUNET_SCHEDULER_NO_TASK;
2312 if ((NULL != tc->read_ready) &&
2313 (GNUNET_NETWORK_fdset_isset (tc->write_ready, s5r->remote_sock)) &&
2314 ((len = GNUNET_NETWORK_socket_send (s5r->remote_sock, s5r->rbuf,
2317 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2318 "Successfully sent %d bytes to remote socket\n",
2323 GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING, "write remote");
2324 if (GNUNET_SCHEDULER_NO_TASK != s5r->rtask)
2325 GNUNET_SCHEDULER_cancel (s5r->rtask);
2326 if (GNUNET_SCHEDULER_NO_TASK != s5r->wtask)
2327 GNUNET_SCHEDULER_cancel (s5r->wtask);
2328 if (GNUNET_SCHEDULER_NO_TASK != s5r->fwdrtask)
2329 GNUNET_SCHEDULER_cancel (s5r->fwdrtask);
2330 GNUNET_NETWORK_socket_close (s5r->remote_sock);
2331 GNUNET_NETWORK_socket_close (s5r->sock);
2337 GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL,
2344 * Clean up s5r handles
2346 * @param s5r the handle to destroy
2349 cleanup_s5r (struct Socks5Request *s5r)
2351 if (GNUNET_SCHEDULER_NO_TASK != s5r->rtask)
2352 GNUNET_SCHEDULER_cancel (s5r->rtask);
2353 if (GNUNET_SCHEDULER_NO_TASK != s5r->fwdwtask)
2354 GNUNET_SCHEDULER_cancel (s5r->fwdwtask);
2355 if (GNUNET_SCHEDULER_NO_TASK != s5r->fwdrtask)
2356 GNUNET_SCHEDULER_cancel (s5r->fwdrtask);
2357 if (NULL != s5r->remote_sock)
2358 GNUNET_NETWORK_socket_close (s5r->remote_sock);
2359 if ((NULL != s5r->sock) && (s5r->cleanup_sock == GNUNET_YES))
2360 GNUNET_NETWORK_socket_close (s5r->sock);
2366 * Write data to socket
2368 * @param cls the closure
2369 * @param tc scheduler context
2372 do_write (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
2374 struct Socks5Request *s5r = cls;
2377 s5r->wtask = GNUNET_SCHEDULER_NO_TASK;
2379 if ((NULL != tc->read_ready) &&
2380 (GNUNET_NETWORK_fdset_isset (tc->write_ready, s5r->sock)) &&
2381 ((len = GNUNET_NETWORK_socket_send (s5r->sock, s5r->wbuf,
2384 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2385 "Successfully sent %d bytes to socket\n",
2391 GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING, "write");
2392 s5r->cleanup = GNUNET_YES;
2393 s5r->cleanup_sock = GNUNET_YES;
2399 if (GNUNET_YES == s5r->cleanup)
2405 if ((s5r->state == SOCKS5_DATA_TRANSFER) &&
2406 (s5r->fwdrtask == GNUNET_SCHEDULER_NO_TASK))
2408 GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL,
2410 &do_read_remote, s5r);
2414 * Read from remote end
2416 * @param cls closure
2417 * @param tc scheduler context
2420 do_read_remote (void* cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
2422 struct Socks5Request *s5r = cls;
2424 s5r->fwdrtask = GNUNET_SCHEDULER_NO_TASK;
2427 if ((NULL != tc->write_ready) &&
2428 (GNUNET_NETWORK_fdset_isset (tc->read_ready, s5r->remote_sock)) &&
2429 (s5r->wbuf_len = GNUNET_NETWORK_socket_recv (s5r->remote_sock, s5r->wbuf,
2430 sizeof (s5r->wbuf))))
2432 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2433 "Successfully read %d bytes from remote socket\n",
2438 if (s5r->wbuf_len == 0)
2439 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2440 "0 bytes received from remote... graceful shutdown!\n");
2441 if (s5r->fwdwtask != GNUNET_SCHEDULER_NO_TASK)
2442 GNUNET_SCHEDULER_cancel (s5r->fwdwtask);
2443 if (s5r->rtask != GNUNET_SCHEDULER_NO_TASK)
2444 GNUNET_SCHEDULER_cancel (s5r->rtask);
2446 GNUNET_NETWORK_socket_close (s5r->remote_sock);
2447 s5r->remote_sock = NULL;
2448 GNUNET_NETWORK_socket_close (s5r->sock);
2454 s5r->wtask = GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL,
2462 * Adds a socket to MHD
2464 * @param h the handle to the socket to add
2465 * @param daemon the daemon to add the fd to
2466 * @return whatever MHD_add_connection returns
2469 add_handle_to_mhd (struct GNUNET_NETWORK_Handle *h, struct MHD_Daemon *daemon)
2472 struct sockaddr *addr;
2475 fd = dup (GNUNET_NETWORK_get_fd (h));
2476 addr = GNUNET_NETWORK_get_addr (h);
2477 len = GNUNET_NETWORK_get_addrlen (h);
2479 return MHD_add_connection (daemon, fd, addr, len);
2483 * Read file in filename
2485 * @param filename file to read
2486 * @param size pointer where filesize is stored
2487 * @return NULL on error
2490 load_file (const char* filename,
2497 GNUNET_DISK_file_size (filename, &fsize,
2498 GNUNET_YES, GNUNET_YES))
2500 if (fsize > MAX_PEM_SIZE)
2502 *size = (unsigned int) fsize;
2503 buffer = GNUNET_malloc (*size);
2504 if (fsize != GNUNET_DISK_fn_read (filename, buffer, (size_t) fsize))
2506 GNUNET_free (buffer);
2514 * Load PEM key from file
2516 * @param key where to store the data
2517 * @param keyfile path to the PEM file
2518 * @return GNUNET_OK on success
2521 load_key_from_file (gnutls_x509_privkey_t key, const char* keyfile)
2523 gnutls_datum_t key_data;
2526 key_data.data = load_file (keyfile, &key_data.size);
2527 ret = gnutls_x509_privkey_import (key, &key_data,
2528 GNUTLS_X509_FMT_PEM);
2529 if (GNUTLS_E_SUCCESS != ret)
2531 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2532 _("Unable to import private key from file `%s'\n"),
2536 GNUNET_free (key_data.data);
2537 return (GNUTLS_E_SUCCESS != ret) ? GNUNET_SYSERR : GNUNET_OK;
2542 * Load cert from file
2544 * @param crt struct to store data in
2545 * @param certfile path to pem file
2546 * @return GNUNET_OK on success
2549 load_cert_from_file (gnutls_x509_crt_t crt, char* certfile)
2551 gnutls_datum_t cert_data;
2554 cert_data.data = load_file (certfile, &cert_data.size);
2555 ret = gnutls_x509_crt_import (crt, &cert_data,
2556 GNUTLS_X509_FMT_PEM);
2557 if (GNUTLS_E_SUCCESS != ret)
2559 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2560 _("Unable to import certificate %s\n"), certfile);
2563 GNUNET_free (cert_data.data);
2564 return (GNUTLS_E_SUCCESS != ret) ? GNUNET_SYSERR : GNUNET_OK;
2569 * Generate new certificate for specific name
2571 * @param name the subject name to generate a cert for
2572 * @return a struct holding the PEM data
2574 static struct ProxyGNSCertificate *
2575 generate_gns_certificate (const char *name)
2578 unsigned int serial;
2579 size_t key_buf_size;
2580 size_t cert_buf_size;
2581 gnutls_x509_crt_t request;
2585 ret = gnutls_x509_crt_init (&request);
2587 if (GNUTLS_E_SUCCESS != ret)
2592 GNUNET_break (GNUTLS_E_SUCCESS == gnutls_x509_crt_set_key (request, proxy_ca.key));
2594 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Generating cert\n");
2596 struct ProxyGNSCertificate *pgc =
2597 GNUNET_malloc (sizeof (struct ProxyGNSCertificate));
2599 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Adding DNs\n");
2601 gnutls_x509_crt_set_dn_by_oid (request, GNUTLS_OID_X520_COUNTRY_NAME,
2603 gnutls_x509_crt_set_dn_by_oid (request, GNUTLS_OID_X520_ORGANIZATION_NAME,
2605 gnutls_x509_crt_set_dn_by_oid (request, GNUTLS_OID_X520_COMMON_NAME,
2606 0, name, strlen (name));
2607 GNUNET_break (GNUTLS_E_SUCCESS == gnutls_x509_crt_set_version (request, 3));
2609 ret = gnutls_rnd (GNUTLS_RND_NONCE, &serial, sizeof (serial));
2611 etime = time (NULL);
2612 tm_data = localtime (&etime);
2615 ret = gnutls_x509_crt_set_serial (request,
2619 ret = gnutls_x509_crt_set_activation_time (request,
2622 etime = mktime (tm_data);
2629 ret = gnutls_x509_crt_set_expiration_time (request,
2631 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Signing...\n");
2633 ret = gnutls_x509_crt_sign (request, proxy_ca.cert, proxy_ca.key);
2635 key_buf_size = sizeof (pgc->key);
2636 cert_buf_size = sizeof (pgc->cert);
2638 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Exporting certificate...\n");
2640 gnutls_x509_crt_export (request, GNUTLS_X509_FMT_PEM,
2641 pgc->cert, &cert_buf_size);
2643 gnutls_x509_privkey_export (proxy_ca.key, GNUTLS_X509_FMT_PEM,
2644 pgc->key, &key_buf_size);
2647 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Cleaning up\n");
2648 gnutls_x509_crt_deinit (request);
2656 * Accept policy for mhdaemons
2659 * @param addr the sockaddr
2660 * @param addrlen the sockaddr length
2661 * @return MHD_NO if sockaddr is wrong or #conns too high
2664 accept_cb (void* cls, const struct sockaddr *addr, socklen_t addrlen)
2666 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2667 "In MHD accept policy cb\n");
2671 if (addr->sa_family == AF_UNIX)
2675 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2676 "Connection accepted\n");
2683 * Adds a socket to an SSL MHD instance
2684 * It is important the the domain name is
2685 * correct. In most cases we need to start a new daemon
2687 * @param h the handle to add to a daemon
2688 * @param domain the domain the ssl daemon has to serve
2689 * @return MHD_YES on success
2692 add_handle_to_ssl_mhd (struct GNUNET_NETWORK_Handle *h, const char* domain)
2694 struct MhdHttpList *hd = NULL;
2695 struct ProxyGNSCertificate *pgc;
2696 struct NetworkHandleList *nh;
2698 for (hd = mhd_httpd_head; NULL != hd; hd = hd->next)
2699 if (0 == strcmp (hd->domain, domain))
2704 pgc = generate_gns_certificate (domain);
2706 hd = GNUNET_malloc (sizeof (struct MhdHttpList));
2707 hd->is_ssl = GNUNET_YES;
2708 strcpy (hd->domain, domain);
2709 hd->proxy_cert = pgc;
2712 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2713 "No previous SSL instance found... starting new one for %s\n",
2715 #if HAVE_MHD_NO_LISTEN_SOCKET
2716 hd->daemon = MHD_start_daemon (MHD_USE_DEBUG | MHD_USE_SSL | MHD_USE_NO_LISTEN_SOCKET,
2719 &create_response, hd,
2720 MHD_OPTION_CONNECTION_LIMIT,
2721 MHD_MAX_CONNECTIONS,
2722 MHD_OPTION_CONNECTION_TIMEOUT, (unsigned int) 16,
2723 MHD_OPTION_NOTIFY_COMPLETED, NULL, NULL,
2724 MHD_OPTION_HTTPS_MEM_KEY, pgc->key,
2725 MHD_OPTION_HTTPS_MEM_CERT, pgc->cert,
2726 MHD_OPTION_URI_LOG_CALLBACK, &mhd_log_callback,
2730 hd->daemon = MHD_start_daemon (MHD_USE_DEBUG | MHD_USE_SSL,
2731 4444 /* dummy port */,
2733 &create_response, hd,
2734 MHD_OPTION_LISTEN_SOCKET, GNUNET_NETWORK_get_fd (mhd_unix_socket),
2735 MHD_OPTION_CONNECTION_LIMIT,
2736 MHD_MAX_CONNECTIONS,
2737 MHD_OPTION_CONNECTION_TIMEOUT, (unsigned int) 16,
2738 MHD_OPTION_NOTIFY_COMPLETED, NULL, NULL,
2739 MHD_OPTION_HTTPS_MEM_KEY, pgc->key,
2740 MHD_OPTION_HTTPS_MEM_CERT, pgc->cert,
2741 MHD_OPTION_URI_LOG_CALLBACK, &mhd_log_callback,
2745 GNUNET_assert (hd->daemon != NULL);
2746 hd->httpd_task = GNUNET_SCHEDULER_NO_TASK;
2748 GNUNET_CONTAINER_DLL_insert (mhd_httpd_head, mhd_httpd_tail, hd);
2751 nh = GNUNET_malloc (sizeof (struct NetworkHandleList));
2754 GNUNET_CONTAINER_DLL_insert (hd->socket_handles_head,
2755 hd->socket_handles_tail,
2758 return add_handle_to_mhd (h, hd->daemon);
2764 * Read data from incoming connection
2766 * @param cls the closure
2767 * @param tc the scheduler context
2770 do_read (void* cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
2772 struct Socks5Request *s5r = cls;
2773 struct socks5_client_hello *c_hello;
2774 struct socks5_server_hello *s_hello;
2775 struct socks5_client_request *c_req;
2776 struct socks5_server_response *s_resp;
2782 struct hostent *phost;
2784 struct sockaddr_in remote_addr;
2785 struct in_addr *r_sin_addr;
2787 struct NetworkHandleList *nh;
2789 s5r->rtask = GNUNET_SCHEDULER_NO_TASK;
2791 if ((NULL != tc->write_ready) &&
2792 (GNUNET_NETWORK_fdset_isset (tc->read_ready, s5r->sock)) &&
2793 (s5r->rbuf_len = GNUNET_NETWORK_socket_recv (s5r->sock, s5r->rbuf,
2794 sizeof (s5r->rbuf))))
2796 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2797 "Successfully read %d bytes from socket\n",
2802 if (s5r->rbuf_len != 0)
2803 GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING, "read");
2805 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "client disco!\n");
2807 if (s5r->fwdrtask != GNUNET_SCHEDULER_NO_TASK)
2808 GNUNET_SCHEDULER_cancel (s5r->fwdrtask);
2809 if (s5r->wtask != GNUNET_SCHEDULER_NO_TASK)
2810 GNUNET_SCHEDULER_cancel (s5r->wtask);
2811 if (s5r->fwdwtask != GNUNET_SCHEDULER_NO_TASK)
2812 GNUNET_SCHEDULER_cancel (s5r->fwdwtask);
2813 GNUNET_NETWORK_socket_close (s5r->remote_sock);
2814 GNUNET_NETWORK_socket_close (s5r->sock);
2819 if (s5r->state == SOCKS5_INIT)
2821 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2823 c_hello = (struct socks5_client_hello*)&s5r->rbuf;
2825 GNUNET_assert (c_hello->version == SOCKS_VERSION_5);
2827 s_hello = (struct socks5_server_hello*)&s5r->wbuf;
2828 s5r->wbuf_len = sizeof( struct socks5_server_hello );
2830 s_hello->version = c_hello->version;
2831 s_hello->auth_method = SOCKS_AUTH_NONE;
2833 /* Write response to client */
2834 s5r->wtask = GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL,
2838 s5r->rtask = GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL,
2842 s5r->state = SOCKS5_REQUEST;
2846 if (s5r->state == SOCKS5_REQUEST)
2848 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2849 "Processing SOCKS5 request\n");
2850 c_req = (struct socks5_client_request*)&s5r->rbuf;
2851 s_resp = (struct socks5_server_response*)&s5r->wbuf;
2852 //Only 10byte for ipv4 response!
2853 s5r->wbuf_len = 10;//sizeof (struct socks5_server_response);
2855 GNUNET_assert (c_req->addr_type == 3);
2857 dom_len = *((uint8_t*)(&(c_req->addr_type) + 1));
2858 memset(domain, 0, sizeof(domain));
2859 strncpy(domain, (char*)(&(c_req->addr_type) + 2), dom_len);
2860 req_port = *((uint16_t*)(&(c_req->addr_type) + 2 + dom_len));
2862 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2863 "Requested connection is %s:%d\n",
2867 if (is_tld (domain, GNUNET_GNS_TLD) ||
2868 is_tld (domain, GNUNET_GNS_TLD_ZKEY))
2870 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2871 "Requested connection is gnunet tld\n",
2875 if (ntohs(req_port) == HTTPS_PORT)
2877 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2878 "Requested connection is HTTPS\n");
2879 ret = add_handle_to_ssl_mhd ( s5r->sock, domain );
2881 else if (NULL != httpd)
2883 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2884 "Requested connection is HTTP\n");
2885 nh = GNUNET_malloc (sizeof (struct NetworkHandleList));
2888 GNUNET_CONTAINER_DLL_insert (mhd_httpd_head->socket_handles_head,
2889 mhd_httpd_head->socket_handles_tail,
2892 ret = add_handle_to_mhd ( s5r->sock, httpd );
2897 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2898 _("Failed to start HTTP server\n"));
2899 s_resp->version = 0x05;
2900 s_resp->reply = 0x01;
2901 s5r->cleanup = GNUNET_YES;
2902 s5r->cleanup_sock = GNUNET_YES;
2904 GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL,
2910 /* Signal success */
2911 s_resp->version = 0x05;
2912 s_resp->reply = 0x00;
2913 s_resp->reserved = 0x00;
2914 s_resp->addr_type = 0x01;
2916 s5r->cleanup = GNUNET_YES;
2917 s5r->cleanup_sock = GNUNET_NO;
2919 GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL,
2927 phost = (struct hostent*)gethostbyname (domain);
2930 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2931 "Resolve %s error!\n", domain );
2932 s_resp->version = 0x05;
2933 s_resp->reply = 0x01;
2934 s5r->cleanup = GNUNET_YES;
2935 s5r->cleanup_sock = GNUNET_YES;
2937 GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL,
2943 s5r->remote_sock = GNUNET_NETWORK_socket_create (AF_INET,
2946 r_sin_addr = (struct in_addr*)(phost->h_addr);
2947 remote_ip = r_sin_addr->s_addr;
2948 memset(&remote_addr, 0, sizeof(remote_addr));
2949 remote_addr.sin_family = AF_INET;
2950 #if HAVE_SOCKADDR_IN_SIN_LEN
2951 remote_addr.sin_len = sizeof (remote_addr);
2953 remote_addr.sin_addr.s_addr = remote_ip;
2954 remote_addr.sin_port = req_port;
2956 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2957 "target server: %s:%u\n", inet_ntoa(remote_addr.sin_addr),
2961 GNUNET_NETWORK_socket_connect ( s5r->remote_sock,
2962 (const struct sockaddr*)&remote_addr,
2963 sizeof (remote_addr)))
2964 && (errno != EINPROGRESS))
2966 GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING, "connect");
2967 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2968 "socket request error...\n");
2969 s_resp->version = 0x05;
2970 s_resp->reply = 0x01;
2972 GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL,
2979 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2980 "new remote connection\n");
2982 s_resp->version = 0x05;
2983 s_resp->reply = 0x00;
2984 s_resp->reserved = 0x00;
2985 s_resp->addr_type = 0x01;
2987 s5r->state = SOCKS5_DATA_TRANSFER;
2990 GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL,
2994 GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL,
3002 if (s5r->state == SOCKS5_DATA_TRANSFER)
3004 if ((s5r->remote_sock == NULL) || (s5r->rbuf_len == 0))
3006 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3007 "Closing connection to client\n");
3008 if (s5r->rtask != GNUNET_SCHEDULER_NO_TASK)
3009 GNUNET_SCHEDULER_cancel (s5r->rtask);
3010 if (s5r->fwdwtask != GNUNET_SCHEDULER_NO_TASK)
3011 GNUNET_SCHEDULER_cancel (s5r->fwdwtask);
3012 if (s5r->fwdrtask != GNUNET_SCHEDULER_NO_TASK)
3013 GNUNET_SCHEDULER_cancel (s5r->fwdrtask);
3014 if (s5r->fwdrtask != GNUNET_SCHEDULER_NO_TASK)
3015 GNUNET_SCHEDULER_cancel (s5r->fwdrtask);
3017 if (s5r->remote_sock != NULL)
3018 GNUNET_NETWORK_socket_close (s5r->remote_sock);
3019 GNUNET_NETWORK_socket_close (s5r->sock);
3024 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3025 "forwarding %d bytes from client\n", s5r->rbuf_len);
3028 GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL,
3030 &do_write_remote, s5r);
3032 if (s5r->fwdrtask == GNUNET_SCHEDULER_NO_TASK)
3035 GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL,
3037 &do_read_remote, s5r);
3047 * Accept new incoming connections
3049 * @param cls the closure
3050 * @param tc the scheduler context
3053 do_accept (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
3055 struct GNUNET_NETWORK_Handle *s;
3056 struct Socks5Request *s5r;
3058 ltask = GNUNET_SCHEDULER_NO_TASK;
3059 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
3062 ltask = GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL,
3066 s = GNUNET_NETWORK_socket_accept (lsock, NULL, NULL);
3070 GNUNET_log_strerror (GNUNET_ERROR_TYPE_ERROR, "accept");
3074 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3075 "Got an inbound connection, waiting for data\n");
3077 s5r = GNUNET_malloc (sizeof (struct Socks5Request));
3079 s5r->state = SOCKS5_INIT;
3080 s5r->wtask = GNUNET_SCHEDULER_NO_TASK;
3081 s5r->fwdwtask = GNUNET_SCHEDULER_NO_TASK;
3082 s5r->fwdrtask = GNUNET_SCHEDULER_NO_TASK;
3083 s5r->rtask = GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL,
3090 * Task run on shutdown
3092 * @param cls closure
3093 * @param tc task context
3096 do_shutdown (void *cls,
3097 const struct GNUNET_SCHEDULER_TaskContext *tc)
3100 struct MhdHttpList *hd;
3101 struct MhdHttpList *tmp_hd;
3102 struct NetworkHandleList *nh;
3103 struct NetworkHandleList *tmp_nh;
3104 struct ProxyCurlTask *ctask;
3105 struct ProxyCurlTask *ctask_tmp;
3106 struct ProxyUploadData *pdata;
3108 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
3109 "Shutting down...\n");
3111 gnutls_global_deinit ();
3113 if (NULL != local_gns_zone)
3114 GNUNET_free (local_gns_zone);
3115 if (NULL != local_private_zone)
3116 GNUNET_free (local_private_zone);
3117 if (NULL != local_shorten_zone)
3118 GNUNET_free (local_shorten_zone);
3120 if (GNUNET_SCHEDULER_NO_TASK != curl_download_task)
3122 GNUNET_SCHEDULER_cancel (curl_download_task);
3123 curl_download_task = GNUNET_SCHEDULER_NO_TASK;
3126 for (hd = mhd_httpd_head; hd != NULL; hd = tmp_hd)
3130 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3131 "Stopping daemon\n");
3133 if (GNUNET_SCHEDULER_NO_TASK != hd->httpd_task)
3135 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3136 "Stopping select task %d\n",
3138 GNUNET_SCHEDULER_cancel (hd->httpd_task);
3139 hd->httpd_task = GNUNET_SCHEDULER_NO_TASK;
3142 if (NULL != hd->daemon)
3144 MHD_stop_daemon (hd->daemon);
3148 for (nh = hd->socket_handles_head; nh != NULL; nh = tmp_nh)
3152 GNUNET_NETWORK_socket_close (nh->h);
3157 if (NULL != hd->proxy_cert)
3159 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3160 "Free certificate\n");
3161 GNUNET_free (hd->proxy_cert);
3167 for (ctask=ctasks_head; ctask != NULL; ctask=ctask_tmp)
3169 ctask_tmp = ctask->next;
3171 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3172 "Cleaning up cURL task\n");
3174 if (ctask->curl != NULL)
3175 curl_easy_cleanup (ctask->curl);
3177 if (NULL != ctask->headers)
3178 curl_slist_free_all (ctask->headers);
3179 if (NULL != ctask->resolver)
3180 curl_slist_free_all (ctask->resolver);
3182 if (NULL != ctask->response)
3183 MHD_destroy_response (ctask->response);
3185 pdata = ctask->upload_data_head;
3187 //FIXME free pdata here
3188 for (; pdata != NULL; pdata = ctask->upload_data_head)
3190 GNUNET_CONTAINER_DLL_remove (ctask->upload_data_head,
3191 ctask->upload_data_tail,
3193 GNUNET_free_non_null (pdata->filename);
3194 GNUNET_free_non_null (pdata->content_type);
3195 GNUNET_free_non_null (pdata->key);
3196 GNUNET_free_non_null (pdata->value);
3197 GNUNET_free (pdata);
3200 GNUNET_free (ctask);
3202 curl_multi_cleanup (curl_multi);
3204 GNUNET_GNS_disconnect (gns_handle);
3209 * Compiles a regex for us
3211 * @param re ptr to re struct
3212 * @param rt the expression to compile
3213 * @return 0 on success
3216 compile_regex (regex_t *re, const char* rt)
3221 status = regcomp (re, rt, REG_EXTENDED|REG_NEWLINE);
3224 regerror (status, re, err, 1024);
3225 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3226 "Regex error compiling '%s': %s\n", rt, err);
3234 * Loads the users local zone key
3236 * @return GNUNET_YES on success
3239 load_local_zone_key (const struct GNUNET_CONFIGURATION_Handle *cfg)
3242 struct GNUNET_CRYPTO_RsaPrivateKey *key = NULL;
3243 struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded pkey;
3244 struct GNUNET_CRYPTO_ShortHashCode *zone = NULL;
3245 struct GNUNET_CRYPTO_ShortHashAsciiEncoded zonename;
3247 if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_filename (cfg, "gns",
3248 "ZONEKEY", &keyfile))
3250 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3251 "Unable to load zone key config value!\n");
3255 if (GNUNET_NO == GNUNET_DISK_file_test (keyfile))
3257 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3258 "Unable to load zone key %s!\n", keyfile);
3259 GNUNET_free(keyfile);
3263 key = GNUNET_CRYPTO_rsa_key_create_from_file (keyfile);
3264 GNUNET_CRYPTO_rsa_key_get_public (key, &pkey);
3265 local_gns_zone = GNUNET_malloc (sizeof (struct GNUNET_CRYPTO_ShortHashCode));
3266 GNUNET_CRYPTO_short_hash(&pkey,
3267 sizeof(struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded),
3269 zone = local_gns_zone;
3270 GNUNET_CRYPTO_short_hash_to_enc (zone, &zonename);
3271 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3272 "Using zone: %s!\n", &zonename);
3273 GNUNET_CRYPTO_rsa_key_free(key);
3274 GNUNET_free(keyfile);
3277 if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_filename (cfg, "gns",
3278 "PRIVATE_ZONEKEY", &keyfile))
3280 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3281 "Unable to load private zone key config value!\n");
3284 if ((NULL != keyfile) && (GNUNET_NO == GNUNET_DISK_file_test (keyfile)))
3286 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3287 "Unable to load private zone key %s!\n", keyfile);
3288 GNUNET_free(keyfile);
3292 key = GNUNET_CRYPTO_rsa_key_create_from_file (keyfile);
3293 GNUNET_CRYPTO_rsa_key_get_public (key, &pkey);
3294 local_private_zone = GNUNET_malloc (sizeof (struct GNUNET_CRYPTO_ShortHashCode));
3295 GNUNET_CRYPTO_short_hash(&pkey,
3296 sizeof(struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded),
3297 local_private_zone);
3298 GNUNET_CRYPTO_short_hash_to_enc (zone, &zonename);
3299 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3300 "Using private zone: %s!\n", &zonename);
3301 GNUNET_CRYPTO_rsa_key_free(key);
3302 GNUNET_free(keyfile);
3306 if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_filename (cfg, "gns",
3307 "SHORTEN_ZONEKEY", &keyfile))
3309 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3310 "Unable to load shorten zone key config value!\n");
3313 if ((NULL != keyfile) && (GNUNET_NO == GNUNET_DISK_file_test (keyfile)))
3315 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3316 "Unable to load shorten zone key %s!\n", keyfile);
3317 GNUNET_free(keyfile);
3321 key = GNUNET_CRYPTO_rsa_key_create_from_file (keyfile);
3322 GNUNET_CRYPTO_rsa_key_get_public (key, &pkey);
3323 local_shorten_zone = GNUNET_malloc (sizeof (struct GNUNET_CRYPTO_ShortHashCode));
3324 GNUNET_CRYPTO_short_hash(&pkey,
3325 sizeof(struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded),
3326 local_shorten_zone);
3327 GNUNET_CRYPTO_short_hash_to_enc (zone, &zonename);
3328 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3329 "Using shorten zone: %s!\n", &zonename);
3330 GNUNET_CRYPTO_rsa_key_free(key);
3331 GNUNET_free(keyfile);
3338 * Main function that will be run
3340 * @param cls closure
3341 * @param args remaining command-line arguments
3342 * @param cfgfile name of the configuration file used (for saving, can be NULL!)
3343 * @param cfg configuration
3346 run (void *cls, char *const *args, const char *cfgfile,
3347 const struct GNUNET_CONFIGURATION_Handle *cfg)
3349 struct sockaddr_in sa;
3350 struct MhdHttpList *hd;
3351 char* cafile_cfg = NULL;
3353 #if !HAVE_MHD_NO_LISTEN_SOCKET
3355 char* proxy_sockfile;
3356 struct sockaddr_un mhd_unix_sock_addr;
3359 curl_multi = curl_multi_init ();
3361 if (NULL == curl_multi)
3363 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3364 "Failed to create cURL multo handle!\n");
3368 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
3370 cafile = cafile_opt;
3373 if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_filename (cfg, "gns-proxy",
3377 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3378 "Unable to load proxy CA config value!\n");
3379 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3380 "No proxy CA provided!\n");
3383 cafile = cafile_cfg;
3385 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3386 "Using %s as CA\n", cafile);
3388 gnutls_global_init ();
3389 gnutls_x509_crt_init (&proxy_ca.cert);
3390 gnutls_x509_privkey_init (&proxy_ca.key);
3392 if ( (GNUNET_OK != load_cert_from_file (proxy_ca.cert, cafile)) ||
3393 (GNUNET_OK != load_key_from_file (proxy_ca.key, cafile)) )
3395 // FIXME: release resources...
3399 GNUNET_free_non_null (cafile_cfg);
3401 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3402 "Loading Template\n");
3404 compile_regex (&re_dotplus, (char*) RE_A_HREF);
3406 gns_handle = GNUNET_GNS_connect (cfg);
3408 if (GNUNET_NO == load_local_zone_key (cfg))
3410 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3411 "Unable to load zone!\n");
3415 if (NULL == gns_handle)
3417 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3418 "Unable to connect to GNS!\n");
3422 memset (&sa, 0, sizeof (sa));
3423 sa.sin_family = AF_INET;
3424 sa.sin_port = htons (port);
3425 #if HAVE_SOCKADDR_IN_SIN_LEN
3426 sa.sin_len = sizeof (sa);
3429 lsock = GNUNET_NETWORK_socket_create (AF_INET,
3433 if ((NULL == lsock) ||
3435 GNUNET_NETWORK_socket_bind (lsock, (const struct sockaddr *) &sa,
3438 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3439 "Failed to create listen socket bound to `%s'",
3440 GNUNET_a2s ((const struct sockaddr *) &sa, sizeof (sa)));
3442 GNUNET_NETWORK_socket_close (lsock);
3446 if (GNUNET_OK != GNUNET_NETWORK_socket_listen (lsock, 5))
3448 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3449 "Failed to listen on socket bound to `%s'",
3450 GNUNET_a2s ((const struct sockaddr *) &sa, sizeof (sa)));
3454 ltask = GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL,
3455 lsock, &do_accept, NULL);
3460 if (0 != curl_global_init (CURL_GLOBAL_WIN32))
3462 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3463 "cURL global init failed!\n");
3467 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3468 "Proxy listens on port %u\n",
3471 mhd_httpd_head = NULL;
3472 mhd_httpd_tail = NULL;
3473 total_mhd_connections = 0;
3474 #if ! HAVE_MHD_NO_LISTEN_SOCKET
3475 if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_filename (cfg, "gns-proxy",
3479 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3480 "Specify PROXY_UNIXPATH in gns-proxy config section!\n");
3484 mhd_unix_socket = GNUNET_NETWORK_socket_create (AF_UNIX,
3488 if (NULL == mhd_unix_socket)
3490 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3491 "Unable to create unix domain socket!\n");
3495 mhd_unix_sock_addr.sun_family = AF_UNIX;
3496 strcpy (mhd_unix_sock_addr.sun_path, proxy_sockfile);
3499 mhd_unix_sock_addr.sun_path[0] = '\0';
3501 #if HAVE_SOCKADDR_IN_SIN_LEN
3502 mhd_unix_sock_addr.sun_len = (u_char) sizeof (struct sockaddr_un);
3505 len = strlen (proxy_sockfile) + sizeof(AF_UNIX);
3507 GNUNET_free (proxy_sockfile);
3509 if (GNUNET_OK != GNUNET_NETWORK_socket_bind (mhd_unix_socket,
3510 (struct sockaddr*)&mhd_unix_sock_addr,
3513 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3514 "Unable to bind unix domain socket!\n");
3518 if (GNUNET_OK != GNUNET_NETWORK_socket_listen (mhd_unix_socket,
3521 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3522 "Unable to listen on unix domain socket!\n");
3527 hd = GNUNET_malloc (sizeof (struct MhdHttpList));
3528 hd->is_ssl = GNUNET_NO;
3529 strcpy (hd->domain, "");
3531 #if HAVE_MHD_NO_LISTEN_SOCKET
3532 httpd = MHD_start_daemon (MHD_USE_DEBUG | MHD_USE_NO_LISTEN_SOCKET,
3535 &create_response, hd,
3536 MHD_OPTION_CONNECTION_LIMIT, MHD_MAX_CONNECTIONS,
3537 MHD_OPTION_CONNECTION_TIMEOUT, (unsigned int) 16,
3538 MHD_OPTION_NOTIFY_COMPLETED,
3540 MHD_OPTION_URI_LOG_CALLBACK, &mhd_log_callback, NULL,
3543 httpd = MHD_start_daemon (MHD_USE_DEBUG,
3544 4444 /* Dummy port */,
3546 &create_response, hd,
3547 MHD_OPTION_LISTEN_SOCKET, GNUNET_NETWORK_get_fd (mhd_unix_socket),
3548 MHD_OPTION_CONNECTION_LIMIT, MHD_MAX_CONNECTIONS,
3549 MHD_OPTION_CONNECTION_TIMEOUT, (unsigned int) 16,
3550 MHD_OPTION_NOTIFY_COMPLETED,
3552 MHD_OPTION_URI_LOG_CALLBACK, &mhd_log_callback, NULL,
3556 GNUNET_assert (httpd != NULL);
3558 hd->httpd_task = GNUNET_SCHEDULER_NO_TASK;
3560 GNUNET_CONTAINER_DLL_insert (mhd_httpd_head, mhd_httpd_tail, hd);
3564 GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL,
3565 &do_shutdown, NULL);
3571 * The main function for gnunet-gns-proxy.
3573 * @param argc number of arguments from the command line
3574 * @param argv command line arguments
3575 * @return 0 ok, 1 on error
3578 main (int argc, char *const *argv)
3580 static const struct GNUNET_GETOPT_CommandLineOption options[] = {
3582 gettext_noop ("listen on specified port (default: 7777)"), 1,
3583 &GNUNET_GETOPT_set_ulong, &port},
3584 {'a', "authority", NULL,
3585 gettext_noop ("pem file to use as CA"), 1,
3586 &GNUNET_GETOPT_set_string, &cafile_opt},
3587 GNUNET_GETOPT_OPTION_END
3592 if (GNUNET_OK != GNUNET_STRINGS_get_utf8_args (argc, argv, &argc, &argv))
3596 GNUNET_log_setup ("gnunet-gns-proxy", "WARNING", NULL);
3599 GNUNET_PROGRAM_run (argc, argv, "gnunet-gns-proxy",
3600 _("GNUnet GNS proxy"),
3602 &run, NULL)) ? 0 : 1;
3603 GNUNET_free_non_null ((char*)argv);