2 This file is part of GNUnet.
3 (C) 2012 Christian Grothoff (and other contributing authors)
5 GNUnet is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published
7 by the Free Software Foundation; either version 3, or (at your
8 option) any later version.
10 GNUnet is distributed in the hope that it will be useful, but
11 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with GNUnet; see the file COPYING. If not, write to the
17 Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA.
22 #include <gnunet_util_lib.h>
23 #include <gnunet_gns_service.h>
24 #include <microhttpd.h>
25 #include <curl/curl.h>
27 #include "gns_proxy_proto.h"
31 #include <gnutls/gnutls.h>
32 #include <gnutls/x509.h>
33 #include <gnutls/abstract.h>
34 #include <gnutls/crypto.h>
37 #define GNUNET_GNS_PROXY_PORT 7777
38 #define MHD_MAX_CONNECTIONS 300
40 /* MHD/cURL defines */
41 #define BUF_WAIT_FOR_CURL 0
42 #define BUF_WAIT_FOR_MHD 1
43 #define HTML_HDR_CONTENT "Content-Type: text/html"
46 //#define RE_DOTPLUS "<a href=\"http://(([A-Za-z]+[.])+)([+])"
47 #define RE_A_HREF "<a href=\"https?://(([A-Za-z0-9]+[.])+)([+]|zkey)"
48 #define RE_N_MATCHES 4
50 /* The usual suspects */
52 #define HTTPS_PORT 443
56 * A structure for CA cert/key
61 gnutls_x509_crt_t cert;
64 gnutls_x509_privkey_t key;
69 * Structure for GNS certificates
71 struct ProxyGNSCertificate
73 /* The certificate as PEM */
76 /* The private key as PEM */
82 * A structure for socks requests
86 /* The client socket */
87 struct GNUNET_NETWORK_Handle *sock;
89 /* The server socket */
90 struct GNUNET_NETWORK_Handle *remote_sock;
95 /* Client socket read task */
96 GNUNET_SCHEDULER_TaskIdentifier rtask;
98 /* Server socket read task */
99 GNUNET_SCHEDULER_TaskIdentifier fwdrtask;
101 /* Client socket write task */
102 GNUNET_SCHEDULER_TaskIdentifier wtask;
104 /* Server socket write task */
105 GNUNET_SCHEDULER_TaskIdentifier fwdwtask;
113 /* Length of data in read buffer */
114 unsigned int rbuf_len;
116 /* Length of data in write buffer */
117 unsigned int wbuf_len;
119 /* This handle is scheduled for cleanup? */
122 /* Shall we close the client socket on cleanup? */
127 * DLL for Network Handles
129 struct NetworkHandleList
132 struct NetworkHandleList *next;
135 struct NetworkHandleList *prev;
138 struct GNUNET_NETWORK_Handle *h;
142 * A structure for all running Httpds
147 struct MhdHttpList *prev;
150 struct MhdHttpList *next;
152 /* is this an ssl daemon? */
155 /* the domain name to server (only important for SSL) */
158 /* The daemon handle */
159 struct MHD_Daemon *daemon;
161 /* Optional proxy certificate used */
162 struct ProxyGNSCertificate *proxy_cert;
165 GNUNET_SCHEDULER_TaskIdentifier httpd_task;
167 /* Handles associated with this daemon */
168 struct NetworkHandleList *socket_handles_head;
170 /* Handles associated with this daemon */
171 struct NetworkHandleList *socket_handles_tail;
175 * A structure for MHD<->cURL streams
180 struct ProxyCurlTask *prev;
183 struct ProxyCurlTask *next;
188 /* Optional header replacements for curl (LEHO) */
189 struct curl_slist *headers;
191 /* Optional resolver replacements for curl (LEHO) */
192 struct curl_slist *resolver;
194 /* The URL to fetch */
197 /* The cURL write buffer / MHD read buffer */
198 char buffer[CURL_MAX_WRITE_SIZE];
200 /* The pointer to the data in the buffer */
203 /* The buffer status (BUF_WAIT_FOR_CURL or BUF_WAIT_FOR_MHD) */
206 /* Number of bytes in buffer */
207 unsigned int bytes_in_buffer;
209 /* Indicates wheather the download is in progress */
210 int download_in_progress;
212 /* Indicates wheather the download was successful */
213 int download_successful;
215 /* Indicates wheather the download failed */
218 /* Indicates wheather we need to parse HTML */
221 /* Indicates wheather we are postprocessing the HTML right now */
222 int is_postprocessing;
224 /* Indicates wheather postprocessing has finished */
227 /* Task ID of the postprocessing task */
228 GNUNET_SCHEDULER_TaskIdentifier pp_task;
230 /* The postprocessing buffer TODO length? */
233 /* The authority of the corresponding host (site of origin) */
236 /* The hostname (Host header field) */
239 /* The LEgacy HOstname (can be empty) */
242 /* The associated daemon list entry */
243 struct MhdHttpList *mhd;
245 /* The associated response */
246 struct MHD_Response *response;
249 struct ProxySetCookieHeader *set_cookies_head;
252 struct ProxySetCookieHeader *set_cookies_tail;
257 * Struct for set-cookies
259 struct ProxySetCookieHeader
262 struct ProxySetCookieHeader *next;
265 struct ProxySetCookieHeader *prev;
271 /* The port the proxy is running on (default 7777) */
272 static unsigned long port = GNUNET_GNS_PROXY_PORT;
274 /* The CA file (pem) to use for the proxy CA */
275 static char* cafile_opt;
277 /* The listen socket of the proxy */
278 static struct GNUNET_NETWORK_Handle *lsock;
280 /* The listen task ID */
281 GNUNET_SCHEDULER_TaskIdentifier ltask;
283 /* The cURL download task */
284 GNUNET_SCHEDULER_TaskIdentifier curl_download_task;
286 /* The non SSL httpd daemon handle */
287 static struct MHD_Daemon *httpd;
289 /* Number of current mhd connections */
290 static unsigned int total_mhd_connections;
292 /* The cURL multi handle */
293 static CURLM *curl_multi;
295 /* Handle to the GNS service */
296 static struct GNUNET_GNS_Handle *gns_handle;
298 /* DLL for ProxyCurlTasks */
299 static struct ProxyCurlTask *ctasks_head;
301 /* DLL for ProxyCurlTasks */
302 static struct ProxyCurlTask *ctasks_tail;
304 /* DLL for http daemons */
305 static struct MhdHttpList *mhd_httpd_head;
307 /* DLL for http daemons */
308 static struct MhdHttpList *mhd_httpd_tail;
310 /* Handle to the regex for dotplus (.+) replacement in HTML */
311 static regex_t re_dotplus;
313 /* The users local GNS zone hash */
314 static struct GNUNET_CRYPTO_ShortHashCode local_gns_zone;
316 /* The users local private zone */
317 static struct GNUNET_CRYPTO_ShortHashCode local_private_zone;
319 /* The users local shorten zone */
320 static struct GNUNET_CRYPTO_ShortHashCode local_shorten_zone;
322 /* The CA for SSL certificate generation */
323 static struct ProxyCA proxy_ca;
325 /* UNIX domain socket for mhd */
326 struct GNUNET_NETWORK_Handle *mhd_unix_socket;
328 /* Shorten zone private key */
329 struct GNUNET_CRYPTO_RsaPrivateKey *shorten_zonekey;
332 * Checks if name is in tld
334 * @param name the name to check
335 * @param tld the TLD to check for
336 * @return GNUNET_YES or GNUNET_NO
339 is_tld(const char* name, const char* tld)
343 if (strlen(name) <= strlen(tld))
348 offset = strlen(name)-strlen(tld);
349 if (strcmp (name+offset, tld) != 0)
351 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
352 "%s is not in .%s TLD\n", name, tld);
361 * Read HTTP request header field 'Host'
363 * @param cls buffer to write to
364 * @param kind value kind
365 * @param key field key
366 * @param value field value
367 * @return MHD_NO when Host found
370 con_val_iter (void *cls,
371 enum MHD_ValueKind kind,
375 char* buf = (char*)cls;
377 if (0 == strcmp ("Host", key))
387 * Check HTTP response header for mime
389 * @param buffer curl buffer
390 * @param size curl blocksize
391 * @param nmemb curl blocknumber
393 * @return size of read bytes
396 curl_check_hdr (void *buffer, size_t size, size_t nmemb, void *cls)
398 size_t bytes = size * nmemb;
399 struct ProxyCurlTask *ctask = cls;
400 int html_mime_len = strlen (HTML_HDR_CONTENT);
401 int cookie_hdr_len = strlen (MHD_HTTP_HEADER_SET_COOKIE);
402 char hdr_mime[html_mime_len+1];
403 char hdr_cookie[size+1];
404 struct ProxySetCookieHeader *pch;
407 if (html_mime_len <= size)
409 memcpy (hdr_mime, buffer, html_mime_len);
410 hdr_mime[html_mime_len] = '\0';
412 if (0 == strcmp (hdr_mime, HTML_HDR_CONTENT))
414 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
415 "Got HTML HTTP response header\n");
416 ctask->parse_content = GNUNET_YES;
420 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
421 "Got header %s\n", buffer);
423 if (cookie_hdr_len <= size)
425 memcpy (hdr_cookie, buffer, size);
426 hdr_cookie[size] = '\0';
428 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
429 "Got Set-Cookie HTTP header %s\n", hdr_cookie);
432 pch = GNUNET_malloc (sizeof (struct ProxySetCookieHeader));
433 len = strlen (hdr_cookie) - strlen (MHD_HTTP_HEADER_SET_COOKIE);
434 pch->cookie = GNUNET_malloc (len + 1);
435 memset (pch->cookie, 0, len + 1);
436 memcpy (pch->cookie, hdr_cookie+strlen (MHD_HTTP_HEADER_SET_COOKIE), len);
437 GNUNET_CONTAINER_DLL_insert (ctask->set_cookies_head,
438 ctask->set_cookies_tail,
448 * @param hd a http daemon list entry
451 run_httpd (struct MhdHttpList *hd);
463 * Task that simply runs MHD main loop
466 * @param tc task context
469 run_mhd (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
472 struct MhdHttpList *hd = cls;
474 //for (hd=mhd_httpd_head; hd != NULL; hd = hd->next)
475 MHD_run (hd->daemon);
480 * Process cURL download bits
482 * @param ptr buffer with data
483 * @param size size of a record
484 * @param nmemb number of records downloaded
486 * @return number of processed bytes
489 callback_download (void *ptr, size_t size, size_t nmemb, void *ctx)
491 const char *cbuf = ptr;
493 struct ProxyCurlTask *ctask = ctx;
504 if (total > sizeof (ctask->buffer))
506 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
507 "CURL gave us too much data to handle (%d)!\n",
512 if (ctask->buf_status == BUF_WAIT_FOR_MHD)
514 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
515 "CURL: Waiting for MHD (%s)\n", ctask->url);
516 return CURL_WRITEFUNC_PAUSE;
520 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
521 "CURL: Copying to MHD (%s, %d)\n", ctask->url, total);
522 memcpy (ctask->buffer, cbuf, total);
523 ctask->bytes_in_buffer = total;
524 ctask->buffer_ptr = ctask->buffer;
526 ctask->buf_status = BUF_WAIT_FOR_MHD;
528 //GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
529 // "cURL chunk:\n%s\n", (char*)ctask->buffer);
530 //run_mhd (NULL, NULL);
531 GNUNET_SCHEDULER_add_now (&run_mhd, ctask->mhd);
536 * Ask cURL for the select sets and schedule download
539 curl_download_prepare ();
542 * Callback to free content
544 * @param cls content to free
545 * @param tc task context
548 mhd_content_free (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
550 struct ProxyCurlTask *ctask = cls;
552 if (NULL != ctask->headers)
553 curl_slist_free_all (ctask->headers);
555 if (NULL != ctask->headers)
556 curl_slist_free_all (ctask->resolver);
558 if (NULL != ctask->response)
559 MHD_destroy_response (ctask->response);
567 * Shorten result callback
569 * @param cls the proxycurltask
570 * @param short_name the shortened name (NULL on error)
573 process_shorten (void* cls, const char* short_name)
575 struct ProxyCurlTask *ctask = cls;
577 char tmp[strlen(ctask->pp_buf)]; //TODO length
579 if (NULL == short_name)
581 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
582 "MHD PP: Unable to shorten %s\n",
587 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
588 "MHD PP: Shorten %s -> %s\n",
592 sprintf (tmp, "<a href=\"http://%s", short_name);
593 strcpy (ctask->pp_buf, tmp);
595 ctask->pp_finished = GNUNET_YES;
597 GNUNET_SCHEDULER_add_now (&run_mhd, ctask->mhd);
602 * Callback for MHD response
605 * @param pos in buffer
607 * @param max space in buffer
608 * @return number of bytes written
611 mhd_content_cb (void *cls,
616 struct ProxyCurlTask *ctask = cls;
618 size_t bytes_to_copy;
621 regmatch_t m[RE_N_MATCHES];
622 struct ProxySetCookieHeader *pch;
624 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
625 "MHD: content cb %s\n", ctask->url);
627 pch = ctask->set_cookies_head;
630 if (GNUNET_NO == MHD_add_response_header (ctask->response,
631 MHD_HTTP_HEADER_SET_COOKIE,
634 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
635 "MHD: Error adding set-cookie header field %s\n",
638 GNUNET_free (pch->cookie);
639 GNUNET_CONTAINER_DLL_remove (ctask->set_cookies_head,
640 ctask->set_cookies_tail,
642 pch = ctask->set_cookies_head;
645 if (ctask->download_successful &&
646 (ctask->buf_status == BUF_WAIT_FOR_CURL))
648 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
649 "MHD: sending response for %s\n", ctask->url);
650 ctask->download_in_progress = GNUNET_NO;
651 GNUNET_SCHEDULER_add_now (&mhd_content_free, ctask);
652 GNUNET_SCHEDULER_add_now (&run_mhd, ctask->mhd);
653 total_mhd_connections--;
654 return MHD_CONTENT_READER_END_OF_STREAM;
657 if (ctask->download_error &&
658 (ctask->buf_status == BUF_WAIT_FOR_CURL))
660 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
661 "MHD: sending error response\n");
662 ctask->download_in_progress = GNUNET_NO;
663 GNUNET_SCHEDULER_add_now (&mhd_content_free, ctask);
664 GNUNET_SCHEDULER_add_now (&run_mhd, ctask->mhd);
665 total_mhd_connections--;
666 return MHD_CONTENT_READER_END_WITH_ERROR;
669 if ( ctask->buf_status == BUF_WAIT_FOR_CURL )
672 bytes_to_copy = ctask->bytes_in_buffer;
674 if (ctask->parse_content == GNUNET_YES)
677 GNUNET_log ( GNUNET_ERROR_TYPE_DEBUG,
678 "MHD: We need to parse the HTML %s\n", ctask->buffer_ptr);
680 nomatch = regexec ( &re_dotplus, ctask->buffer_ptr, RE_N_MATCHES, m, 0);
684 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
685 "MHD RE: No match\n");
689 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
692 GNUNET_assert (m[1].rm_so != -1);
694 hostptr = ctask->buffer_ptr+m[1].rm_so;
698 bytes_to_copy = m[0].rm_so;
699 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
700 "Copying %d bytes.\n", m[0].rm_so);
706 if (ctask->is_postprocessing == GNUNET_YES)
710 if ( ctask->pp_finished == GNUNET_NO )
712 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
713 "MHD PP: Waiting for PP of %s\n", ctask->pp_buf);
717 ctask->is_postprocessing = GNUNET_NO;
719 ctask->bytes_in_buffer -= m[0].rm_eo;//(m[1].rm_eo-m[1].rm_so);
720 ctask->buffer_ptr += m[0].rm_eo;//(m[1].rm_eo-m[1].rm_so);
721 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
722 "Skipping next %d bytes in buffer\n", m[0].rm_eo);
724 GNUNET_SCHEDULER_add_now (&run_mhd, ctask->mhd);
726 if ( strlen (ctask->pp_buf) <= max )
728 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
729 "Copying postprocessed %s.\n", ctask->pp_buf);
730 memcpy ( buf, ctask->pp_buf, strlen (ctask->pp_buf) );
731 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
733 ctask->is_postprocessing = GNUNET_NO;
734 return strlen (ctask->pp_buf);
740 memset (ctask->pp_buf, 0, sizeof(ctask->pp_buf));
742 /* If .+ extend with authority */
743 if (*(ctask->buffer_ptr+m[1].rm_eo) == '+')
745 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
747 memcpy (ctask->pp_buf, hostptr, (m[1].rm_eo-m[1].rm_so));
748 strcpy ( ctask->pp_buf+strlen(ctask->pp_buf),
751 /* If .zkey simply copy the name */
754 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
756 memcpy (ctask->pp_buf, hostptr, (m[1].rm_eo-m[1].rm_so + strlen (GNUNET_GNS_TLD_ZKEY)));
759 ctask->is_postprocessing = GNUNET_YES;
760 ctask->pp_finished = GNUNET_NO;
762 GNUNET_GNS_shorten_zone (gns_handle,
775 if ( bytes_to_copy > max )
777 GNUNET_log ( GNUNET_ERROR_TYPE_DEBUG,
778 "MHD: buffer in response too small! (%s)\n",
780 memcpy ( buf, ctask->buffer_ptr, max);
781 ctask->bytes_in_buffer -= max;
782 ctask->buffer_ptr += max;
787 GNUNET_log ( GNUNET_ERROR_TYPE_DEBUG,
788 "MHD: copying %d bytes to mhd response at offset %d\n",
791 memcpy ( buf, ctask->buffer_ptr, bytes_to_copy );
792 copied = bytes_to_copy;
793 if (bytes_to_copy < ctask->bytes_in_buffer)
795 ctask->bytes_in_buffer -= bytes_to_copy;
796 ctask->buffer_ptr += bytes_to_copy;
800 ctask->bytes_in_buffer = 0;
801 ctask->buf_status = BUF_WAIT_FOR_CURL;
802 ctask->buffer_ptr = ctask->buffer;
803 if (NULL != ctask->curl)
804 curl_easy_pause (ctask->curl, CURLPAUSE_CONT);
805 GNUNET_SCHEDULER_add_now (&run_mhd, ctask->mhd);
809 GNUNET_SCHEDULER_add_now (&run_mhd, ctask->mhd);
817 * Task that is run when we are ready to receive more data
821 * @param tc task context
824 curl_task_download (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
827 * Ask cURL for the select sets and schedule download
830 curl_download_prepare ()
837 struct GNUNET_NETWORK_FDSet *grs;
838 struct GNUNET_NETWORK_FDSet *gws;
840 struct GNUNET_TIME_Relative rtime;
846 mret = curl_multi_fdset (curl_multi, &rs, &ws, &es, &max);
848 if (mret != CURLM_OK)
850 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
851 "%s failed at %s:%d: `%s'\n",
852 "curl_multi_fdset", __FILE__, __LINE__,
853 curl_multi_strerror (mret));
858 mret = curl_multi_timeout (curl_multi, &to);
859 rtime = GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MILLISECONDS, to);
861 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
862 "cURL multi fds: max=%d timeout=%llu\n", max, to);
864 grs = GNUNET_NETWORK_fdset_create ();
865 gws = GNUNET_NETWORK_fdset_create ();
866 GNUNET_NETWORK_fdset_copy_native (grs, &rs, max + 1);
867 GNUNET_NETWORK_fdset_copy_native (gws, &ws, max + 1);
868 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
869 "Scheduling task cURL\n");
871 if (curl_download_task != GNUNET_SCHEDULER_NO_TASK)
872 GNUNET_SCHEDULER_cancel (curl_download_task);
875 GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT,
878 &curl_task_download, curl_multi);
879 GNUNET_NETWORK_fdset_destroy (gws);
880 GNUNET_NETWORK_fdset_destroy (grs);
886 * Task that is run when we are ready to receive more data
890 * @param tc task context
893 curl_task_download (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
899 struct ProxyCurlTask *ctask;
902 struct ProxyCurlTask *clean_head = NULL;
903 struct ProxyCurlTask *clean_tail = NULL;
905 curl_download_task = GNUNET_SCHEDULER_NO_TASK;
907 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
909 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
910 "Shutdown requested while trying to download\n");
914 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
922 mret = curl_multi_perform (curl_multi, &running);
924 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
925 "Running curl tasks: %d\n", running);
928 for (; ctask != NULL; ctask = ctask->next)
930 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
931 "CTask: %s\n", ctask->url);
935 if (num_ctasks != running)
937 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
938 "%d ctasks, %d curl running\n", num_ctasks, running);
944 msg = curl_multi_info_read (curl_multi, &msgnum);
945 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
946 "Messages left: %d\n", msgnum);
953 if ((msg->data.result != CURLE_OK) &&
954 (msg->data.result != CURLE_GOT_NOTHING))
956 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
957 "Download curl failed");
959 for (; ctask != NULL; ctask = ctask->next)
961 if (NULL == ctask->curl)
964 if (memcmp (msg->easy_handle, ctask->curl, sizeof (CURL)) != 0)
967 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
968 "Download curl failed for task %s: %s.\n",
970 curl_easy_strerror (msg->data.result));
971 ctask->download_successful = GNUNET_NO;
972 ctask->download_error = GNUNET_YES;
973 //curl_multi_remove_handle (curl_multi, ctask->curl);
974 //curl_easy_cleanup (ctask->curl);
975 //ctask->curl = NULL;
976 GNUNET_CONTAINER_DLL_remove (ctasks_head, ctasks_tail,
978 GNUNET_CONTAINER_DLL_insert (clean_head, clean_tail, ctask);
981 GNUNET_assert (ctask != NULL);
985 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
986 "cURL download completed.\n");
988 for (; ctask != NULL; ctask = ctask->next)
990 if (NULL == ctask->curl)
993 if (memcmp (msg->easy_handle, ctask->curl, sizeof (CURL)) != 0)
996 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
997 "cURL task %s found.\n", ctask->url);
998 ctask->download_successful = GNUNET_YES;
999 //curl_multi_remove_handle (curl_multi, ctask->curl);
1000 //curl_easy_cleanup (ctask->curl);
1001 //ctask->curl = NULL;
1002 GNUNET_CONTAINER_DLL_remove (ctasks_head, ctasks_tail,
1004 GNUNET_CONTAINER_DLL_insert (clean_head, clean_tail, ctask);
1008 GNUNET_assert (ctask != NULL);
1010 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1011 "curl end %s\n", curl_easy_strerror(msg->data.result));
1017 } while (msgnum > 0);
1019 for (ctask=clean_head; ctask != NULL; ctask = ctask->next)
1021 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1022 "Removing cURL task %s.\n", ctask->url);
1023 curl_multi_remove_handle (curl_multi, ctask->curl);
1024 curl_easy_cleanup (ctask->curl);
1029 for (ctask=ctasks_head; ctask != NULL; ctask = ctask->next)
1034 if (num_ctasks != running)
1036 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1037 "%d ctasks, %d curl running\n", num_ctasks, running);
1040 GNUNET_assert ( num_ctasks == running );
1044 } while (mret == CURLM_CALL_MULTI_PERFORM);
1047 if (mret != CURLM_OK)
1049 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "%s failed at %s:%d: `%s'\n",
1050 "curl_multi_perform", __FILE__, __LINE__,
1051 curl_multi_strerror (mret));
1053 curl_download_prepare();
1057 * Process LEHO lookup
1059 * @param cls the ctask
1060 * @param rd_count number of records returned
1061 * @param rd record data
1064 process_leho_lookup (void *cls,
1066 const struct GNUNET_NAMESTORE_RecordData *rd)
1068 struct ProxyCurlTask *ctask = cls;
1069 char hosthdr[262]; //256 + "Host: "
1073 struct hostent *phost;
1075 char resolvename[512];
1078 ctask->headers = NULL;
1080 strcpy (ctask->leho, "");
1083 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1084 "No LEHO present!\n");
1086 for (i=0; i<rd_count; i++)
1088 if (rd[i].record_type != GNUNET_GNS_RECORD_LEHO)
1091 memcpy (ctask->leho, rd[i].data, rd[i].data_size);
1093 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1094 "Found LEHO %s for %s\n", ctask->leho, ctask->url);
1097 if (0 != strcmp (ctask->leho, ""))
1099 sprintf (hosthdr, "%s%s", "Host: ", ctask->leho);
1100 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1101 "New HTTP header value: %s\n", hosthdr);
1102 ctask->headers = curl_slist_append (ctask->headers, hosthdr);
1103 GNUNET_assert (NULL != ctask->headers);
1104 ret = curl_easy_setopt (ctask->curl, CURLOPT_HTTPHEADER, ctask->headers);
1105 if (CURLE_OK != ret)
1107 GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "%s failed at %s:%d: `%s'\n",
1108 "curl_easy_setopt", __FILE__, __LINE__, curl_easy_strerror(ret));
1113 if (ctask->mhd->is_ssl)
1115 phost = (struct hostent*)gethostbyname (ctask->host);
1119 ssl_ip = inet_ntoa(*((struct in_addr*)(phost->h_addr)));
1120 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1121 "SSL target server: %s\n", ssl_ip);
1122 sprintf (resolvename, "%s:%d:%s", ctask->leho, HTTPS_PORT, ssl_ip);
1123 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1124 "Curl resolve: %s\n", resolvename);
1125 ctask->resolver = curl_slist_append ( ctask->resolver, resolvename);
1126 curl_easy_setopt (ctask->curl, CURLOPT_RESOLVE, ctask->resolver);
1127 sprintf (curlurl, "https://%s%s", ctask->leho, ctask->url);
1128 curl_easy_setopt (ctask->curl, CURLOPT_URL, curlurl);
1132 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1133 "gethostbyname failed for %s!\n", ctask->host);
1134 ctask->download_successful = GNUNET_NO;
1135 ctask->download_error = GNUNET_YES;
1140 if (CURLM_OK != (mret=curl_multi_add_handle (curl_multi, ctask->curl)))
1142 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1143 "%s failed at %s:%d: `%s'\n",
1144 "curl_multi_add_handle", __FILE__, __LINE__,
1145 curl_multi_strerror (mret));
1146 ctask->download_successful = GNUNET_NO;
1147 ctask->download_error = GNUNET_YES;
1150 GNUNET_CONTAINER_DLL_insert (ctasks_head, ctasks_tail, ctask);
1152 curl_download_prepare ();
1157 * Initialize download and trigger curl
1159 * @param cls the proxycurltask
1160 * @param auth_name the name of the authority (site of origin) of ctask->host
1164 process_get_authority (void *cls,
1165 const char* auth_name)
1167 struct ProxyCurlTask *ctask = cls;
1169 if (NULL == auth_name)
1171 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1172 "Get authority failed!\n");
1173 strcpy (ctask->authority, "");
1177 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1178 "Get authority yielded %s\n", auth_name);
1179 strcpy (ctask->authority, auth_name);
1182 GNUNET_GNS_lookup_zone (gns_handle,
1185 GNUNET_GNS_RECORD_LEHO,
1186 GNUNET_YES, //Only cached for performance
1188 &process_leho_lookup,
1193 * Main MHD callback for handling requests.
1196 * @param con MHD connection handle
1197 * @param url the url in the request
1198 * @param meth the HTTP method used ("GET", "PUT", etc.)
1199 * @param ver the HTTP version string (i.e. "HTTP/1.1")
1200 * @param upload_data the data being uploaded (excluding HEADERS,
1201 * for a POST that fits into memory and that is encoded
1202 * with a supported encoding, the POST data will NOT be
1203 * given in upload_data and is instead available as
1204 * part of MHD_get_connection_values; very large POST
1205 * data *will* be made available incrementally in
1207 * @param upload_data_size set initially to the size of the
1208 * upload_data provided; the method must update this
1209 * value to the number of bytes NOT processed;
1210 * @param con_cls pointer to location where we store the 'struct Request'
1211 * @return MHD_YES if the connection was handled successfully,
1212 * MHD_NO if the socket must be closed due to a serious
1213 * error while handling the request
1216 create_response (void *cls,
1217 struct MHD_Connection *con,
1221 const char *upload_data,
1222 size_t *upload_data_size,
1226 struct MhdHttpList* hd = cls;
1227 const char* page = "<html><head><title>gnoxy</title>"\
1228 "</head><body>cURL fail</body></html>";
1234 struct ProxyCurlTask *ctask;
1236 if (0 != strcmp (meth, "GET"))
1238 if (&dummy != *con_cls)
1244 if (0 != *upload_data_size)
1249 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1252 MHD_get_connection_values (con,
1254 &con_val_iter, host);
1258 ctask = GNUNET_malloc (sizeof (struct ProxyCurlTask));
1261 if (curl_multi == NULL)
1262 curl_multi = curl_multi_init ();
1264 ctask->curl = curl_easy_init();
1266 if ((ctask->curl == NULL) || (curl_multi == NULL))
1268 ctask->response = MHD_create_response_from_buffer (strlen (page),
1270 MHD_RESPMEM_PERSISTENT);
1271 ret = MHD_queue_response (con,
1274 MHD_destroy_response (ctask->response);
1275 GNUNET_free (ctask);
1281 ctask->headers = NULL;
1282 ctask->resolver = NULL;
1283 ctask->buffer_ptr = NULL;
1284 ctask->download_in_progress = GNUNET_YES;
1285 ctask->download_successful = GNUNET_NO;
1286 ctask->buf_status = BUF_WAIT_FOR_CURL;
1287 ctask->bytes_in_buffer = 0;
1288 ctask->parse_content = GNUNET_NO;
1290 curl_easy_setopt (ctask->curl, CURLOPT_HEADERFUNCTION, &curl_check_hdr);
1291 curl_easy_setopt (ctask->curl, CURLOPT_HEADERDATA, ctask);
1292 curl_easy_setopt (ctask->curl, CURLOPT_WRITEFUNCTION, &callback_download);
1293 curl_easy_setopt (ctask->curl, CURLOPT_WRITEDATA, ctask);
1294 curl_easy_setopt (ctask->curl, CURLOPT_FOLLOWLOCATION, 1);
1295 curl_easy_setopt (ctask->curl, CURLOPT_MAXREDIRS, 4);
1296 /* no need to abort if the above failed */
1297 if (GNUNET_NO == ctask->mhd->is_ssl)
1299 sprintf (curlurl, "http://%s%s", host, url);
1300 curl_easy_setopt (ctask->curl, CURLOPT_URL, curlurl);
1301 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
1302 "Adding new curl task for %s\n", curlurl);
1304 strcpy (ctask->host, host);
1305 strcpy (ctask->url, url);
1307 //curl_easy_setopt (ctask->curl, CURLOPT_URL, curlurl);
1308 curl_easy_setopt (ctask->curl, CURLOPT_FAILONERROR, 1);
1309 curl_easy_setopt (ctask->curl, CURLOPT_CONNECTTIMEOUT, 600L);
1310 curl_easy_setopt (ctask->curl, CURLOPT_TIMEOUT, 600L);
1312 GNUNET_GNS_get_authority (gns_handle,
1314 &process_get_authority,
1316 //download_prepare (ctask);
1317 //curl_download_prepare ();
1319 ctask->response = MHD_create_response_from_callback (MHD_SIZE_UNKNOWN,
1325 ret = MHD_queue_response (con, MHD_HTTP_OK, ctask->response);
1327 //MHD_destroy_response (response);
1333 * Task run whenever HTTP server operations are pending.
1336 * @param tc sched context
1339 do_httpd (void *cls,
1340 const struct GNUNET_SCHEDULER_TaskContext *tc);
1349 struct MhdHttpList *hd;
1351 for (hd=mhd_httpd_head; hd != NULL; hd = hd->next)
1359 * @param hd the daemon to run
1362 run_httpd (struct MhdHttpList *hd)
1367 struct GNUNET_NETWORK_FDSet *wrs;
1368 struct GNUNET_NETWORK_FDSet *wws;
1369 struct GNUNET_NETWORK_FDSet *wes;
1372 unsigned MHD_LONG_LONG timeout;
1373 struct GNUNET_TIME_Relative tv;
1378 wrs = GNUNET_NETWORK_fdset_create ();
1379 wes = GNUNET_NETWORK_fdset_create ();
1380 wws = GNUNET_NETWORK_fdset_create ();
1382 GNUNET_assert (MHD_YES == MHD_get_fdset (hd->daemon, &rs, &ws, &es, &max));
1385 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1386 "MHD fds: max=%d\n", max);
1388 haveto = MHD_get_timeout (hd->daemon, &timeout);
1390 if (haveto == MHD_YES)
1391 tv.rel_value = (uint64_t) timeout;
1393 tv = GNUNET_TIME_UNIT_FOREVER_REL;
1394 GNUNET_NETWORK_fdset_copy_native (wrs, &rs, max + 1);
1395 GNUNET_NETWORK_fdset_copy_native (wws, &ws, max + 1);
1396 GNUNET_NETWORK_fdset_copy_native (wes, &es, max + 1);
1398 if (hd->httpd_task != GNUNET_SCHEDULER_NO_TASK)
1399 GNUNET_SCHEDULER_cancel (hd->httpd_task);
1401 GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_HIGH,
1404 GNUNET_NETWORK_fdset_destroy (wrs);
1405 GNUNET_NETWORK_fdset_destroy (wws);
1406 GNUNET_NETWORK_fdset_destroy (wes);
1411 * Task run whenever HTTP server operations are pending.
1414 * @param tc sched context
1417 do_httpd (void *cls,
1418 const struct GNUNET_SCHEDULER_TaskContext *tc)
1420 struct MhdHttpList *hd = cls;
1422 hd->httpd_task = GNUNET_SCHEDULER_NO_TASK;
1424 MHD_run (hd->daemon);
1430 * Read data from socket
1432 * @param cls the closure
1433 * @param tc scheduler context
1436 do_read (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
1439 * Read from remote end
1441 * @param cls closure
1442 * @param tc scheduler context
1445 do_read_remote (void* cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
1448 * Write data to remote socket
1450 * @param cls the closure
1451 * @param tc scheduler context
1454 do_write_remote (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
1456 struct Socks5Request *s5r = cls;
1459 s5r->fwdwtask = GNUNET_SCHEDULER_NO_TASK;
1461 if ((NULL != tc->read_ready) &&
1462 (GNUNET_NETWORK_fdset_isset (tc->write_ready, s5r->remote_sock)) &&
1463 ((len = GNUNET_NETWORK_socket_send (s5r->remote_sock, s5r->rbuf,
1466 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1467 "Successfully sent %d bytes to remote socket\n",
1472 GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING, "write remote");
1474 if (s5r->rtask != GNUNET_SCHEDULER_NO_TASK)
1475 GNUNET_SCHEDULER_cancel (s5r->rtask);
1476 if (s5r->wtask != GNUNET_SCHEDULER_NO_TASK)
1477 GNUNET_SCHEDULER_cancel (s5r->wtask);
1478 if (s5r->fwdrtask != GNUNET_SCHEDULER_NO_TASK)
1479 GNUNET_SCHEDULER_cancel (s5r->fwdrtask);
1480 GNUNET_NETWORK_socket_close (s5r->remote_sock);
1481 GNUNET_NETWORK_socket_close (s5r->sock);
1487 GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL,
1494 * Clean up s5r handles
1496 * @param s5r the handle to destroy
1499 cleanup_s5r (struct Socks5Request *s5r)
1501 if (s5r->rtask != GNUNET_SCHEDULER_NO_TASK)
1502 GNUNET_SCHEDULER_cancel (s5r->rtask);
1503 if (s5r->fwdwtask != GNUNET_SCHEDULER_NO_TASK)
1504 GNUNET_SCHEDULER_cancel (s5r->fwdwtask);
1505 if (s5r->fwdrtask != GNUNET_SCHEDULER_NO_TASK)
1506 GNUNET_SCHEDULER_cancel (s5r->fwdrtask);
1508 if (NULL != s5r->remote_sock)
1509 GNUNET_NETWORK_socket_close (s5r->remote_sock);
1510 if ((NULL != s5r->sock) && (s5r->cleanup_sock == GNUNET_YES))
1511 GNUNET_NETWORK_socket_close (s5r->sock);
1517 * Write data to socket
1519 * @param cls the closure
1520 * @param tc scheduler context
1523 do_write (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
1525 struct Socks5Request *s5r = cls;
1528 s5r->wtask = GNUNET_SCHEDULER_NO_TASK;
1530 if ((NULL != tc->read_ready) &&
1531 (GNUNET_NETWORK_fdset_isset (tc->write_ready, s5r->sock)) &&
1532 ((len = GNUNET_NETWORK_socket_send (s5r->sock, s5r->wbuf,
1535 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1536 "Successfully sent %d bytes to socket\n",
1542 GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING, "write");
1543 s5r->cleanup = GNUNET_YES;
1544 s5r->cleanup_sock = GNUNET_YES;
1550 if (GNUNET_YES == s5r->cleanup)
1556 if ((s5r->state == SOCKS5_DATA_TRANSFER) &&
1557 (s5r->fwdrtask == GNUNET_SCHEDULER_NO_TASK))
1559 GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL,
1561 &do_read_remote, s5r);
1565 * Read from remote end
1567 * @param cls closure
1568 * @param tc scheduler context
1571 do_read_remote (void* cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
1573 struct Socks5Request *s5r = cls;
1575 s5r->fwdrtask = GNUNET_SCHEDULER_NO_TASK;
1578 if ((NULL != tc->write_ready) &&
1579 (GNUNET_NETWORK_fdset_isset (tc->read_ready, s5r->remote_sock)) &&
1580 (s5r->wbuf_len = GNUNET_NETWORK_socket_recv (s5r->remote_sock, s5r->wbuf,
1581 sizeof (s5r->wbuf))))
1583 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1584 "Successfully read %d bytes from remote socket\n",
1589 if (s5r->wbuf_len == 0)
1590 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1591 "0 bytes received from remote... graceful shutdown!\n");
1592 if (s5r->fwdwtask != GNUNET_SCHEDULER_NO_TASK)
1593 GNUNET_SCHEDULER_cancel (s5r->fwdwtask);
1594 if (s5r->rtask != GNUNET_SCHEDULER_NO_TASK)
1595 GNUNET_SCHEDULER_cancel (s5r->rtask);
1597 GNUNET_NETWORK_socket_close (s5r->remote_sock);
1598 s5r->remote_sock = NULL;
1599 GNUNET_NETWORK_socket_close (s5r->sock);
1605 s5r->wtask = GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL,
1613 * Adds a socket to MHD
1615 * @param h the handle to the socket to add
1616 * @param daemon the daemon to add the fd to
1617 * @return whatever MHD_add_connection returns
1620 add_handle_to_mhd (struct GNUNET_NETWORK_Handle *h, struct MHD_Daemon *daemon)
1623 struct sockaddr *addr;
1626 fd = dup (GNUNET_NETWORK_get_fd (h));
1627 addr = GNUNET_NETWORK_get_addr (h);
1628 len = GNUNET_NETWORK_get_addrlen (h);
1630 return MHD_add_connection (daemon, fd, addr, len);
1634 * Calculate size of file
1636 * @param filename name of file
1637 * @return filesize or 0 on error
1640 get_file_size (const char* filename)
1644 fp = fopen (filename, "rb");
1649 if ((0 != fseek (fp, 0, SEEK_END)) || (-1 == (size = ftell (fp))))
1661 * Read file in filename
1663 * @param filename file to read
1664 * @param size pointer where filesize is stored
1668 load_file (const char* filename, unsigned int* size)
1673 *size = get_file_size (filename);
1677 fp = fopen (filename, "rb");
1681 buffer = GNUNET_malloc (*size);
1688 if (*size != fread (buffer, 1, *size, fp))
1690 GNUNET_free (buffer);
1699 * Load PEM key from file
1701 * @param key where to store the data
1702 * @param keyfile path to the PEM file
1705 load_key_from_file (gnutls_x509_privkey_t key, char* keyfile)
1707 gnutls_datum_t key_data;
1708 key_data.data = NULL;
1711 key_data.data = (unsigned char*)load_file (keyfile, &key_data.size);
1713 ret = gnutls_x509_privkey_import (key, &key_data,
1714 GNUTLS_X509_FMT_PEM);
1716 if (GNUTLS_E_SUCCESS != ret)
1718 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1719 "Unable to import private key %s(ret=%d)\n", key_data.data, ret);
1723 GNUNET_free (key_data.data);
1727 * Load cert from file
1729 * @param crt struct to store data in
1730 * @param certfile path to pem file
1733 load_cert_from_file (gnutls_x509_crt_t crt, char* certfile)
1735 gnutls_datum_t cert_data;
1736 cert_data.data = NULL;
1739 cert_data.data = (unsigned char*)load_file (certfile, &cert_data.size);
1741 ret = gnutls_x509_crt_import (crt, &cert_data,
1742 GNUTLS_X509_FMT_PEM);
1743 if (GNUTLS_E_SUCCESS != ret)
1745 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1746 "Unable to import certificate %s(ret=%d)\n", certfile, ret);
1750 GNUNET_free (cert_data.data);
1756 * Generate new certificate for specific name
1758 * @param name the subject name to generate a cert for
1759 * @return a struct holding the PEM data
1761 static struct ProxyGNSCertificate *
1762 generate_gns_certificate (const char *name)
1766 unsigned int serial;
1767 size_t key_buf_size;
1768 size_t cert_buf_size;
1769 gnutls_x509_crt_t request;
1773 ret = gnutls_x509_crt_init (&request);
1775 if (GNUTLS_E_SUCCESS != ret)
1780 ret = gnutls_x509_crt_set_key (request, proxy_ca.key);
1782 if (GNUTLS_E_SUCCESS != ret)
1787 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Generating cert\n");
1789 struct ProxyGNSCertificate *pgc =
1790 GNUNET_malloc (sizeof (struct ProxyGNSCertificate));
1792 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Adding DNs\n");
1794 gnutls_x509_crt_set_dn_by_oid (request, GNUTLS_OID_X520_COUNTRY_NAME,
1797 gnutls_x509_crt_set_dn_by_oid (request, GNUTLS_OID_X520_ORGANIZATION_NAME,
1800 gnutls_x509_crt_set_dn_by_oid (request, GNUTLS_OID_X520_COMMON_NAME,
1801 0, name, strlen (name));
1803 ret = gnutls_x509_crt_set_version (request, 3);
1805 ret = gnutls_rnd (GNUTLS_RND_NONCE, &serial, sizeof (serial));
1807 etime = time (NULL);
1808 tm_data = localtime (&etime);
1811 ret = gnutls_x509_crt_set_serial (request,
1815 ret = gnutls_x509_crt_set_activation_time (request,
1818 etime = mktime (tm_data);
1825 ret = gnutls_x509_crt_set_expiration_time (request,
1827 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Signing...\n");
1829 ret = gnutls_x509_crt_sign (request, proxy_ca.cert, proxy_ca.key);
1831 key_buf_size = sizeof (pgc->key);
1832 cert_buf_size = sizeof (pgc->cert);
1834 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Exporting certificate...\n");
1836 gnutls_x509_crt_export (request, GNUTLS_X509_FMT_PEM,
1837 pgc->cert, &cert_buf_size);
1839 gnutls_x509_privkey_export (proxy_ca.key, GNUTLS_X509_FMT_PEM,
1840 pgc->key, &key_buf_size);
1843 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Cleaning up\n");
1844 gnutls_x509_crt_deinit (request);
1852 * Accept policy for mhdaemons
1855 * @param addr the sockaddr
1856 * @param addrlen the sockaddr length
1857 * @return MHD_NO if sockaddr is wrong or #conns too high
1860 accept_cb (void* cls, const struct sockaddr *addr, socklen_t addrlen)
1862 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1863 "In MHD accept policy cb\n");
1867 if (addr->sa_family == AF_UNIX)
1871 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1872 "Connection accepted\n");
1879 * Adds a socket to an SSL MHD instance
1880 * It is important the the domain name is
1881 * correct. In most cases we need to start a new daemon
1883 * @param h the handle to add to a daemon
1884 * @param domain the domain the ssl daemon has to serve
1885 * @return MHD_YES on success
1888 add_handle_to_ssl_mhd (struct GNUNET_NETWORK_Handle *h, char* domain)
1890 struct MhdHttpList *hd = NULL;
1891 struct ProxyGNSCertificate *pgc;
1892 struct NetworkHandleList *nh;
1894 for (hd = mhd_httpd_head; hd != NULL; hd = hd->next)
1896 if (0 == strcmp (hd->domain, domain))
1903 pgc = generate_gns_certificate (domain);
1905 hd = GNUNET_malloc (sizeof (struct MhdHttpList));
1906 hd->is_ssl = GNUNET_YES;
1907 strcpy (hd->domain, domain);
1908 hd->proxy_cert = pgc;
1911 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1912 "No previous SSL instance found... starting new one for %s\n",
1915 hd->daemon = MHD_start_daemon (MHD_USE_DEBUG | MHD_USE_SSL, 4444,
1917 &create_response, hd,
1918 MHD_OPTION_LISTEN_SOCKET, GNUNET_NETWORK_get_fd (mhd_unix_socket),
1919 MHD_OPTION_CONNECTION_LIMIT, MHD_MAX_CONNECTIONS,
1920 MHD_OPTION_CONNECTION_TIMEOUT, (unsigned int) 16,
1921 MHD_OPTION_NOTIFY_COMPLETED,
1923 MHD_OPTION_HTTPS_MEM_KEY, pgc->key,
1924 MHD_OPTION_HTTPS_MEM_CERT, pgc->cert,
1927 GNUNET_assert (hd->daemon != NULL);
1928 hd->httpd_task = GNUNET_SCHEDULER_NO_TASK;
1930 GNUNET_CONTAINER_DLL_insert (mhd_httpd_head, mhd_httpd_tail, hd);
1933 nh = GNUNET_malloc (sizeof (struct NetworkHandleList));
1936 GNUNET_CONTAINER_DLL_insert (hd->socket_handles_head,
1937 hd->socket_handles_tail,
1940 return add_handle_to_mhd (h, hd->daemon);
1946 * Read data from incoming connection
1948 * @param cls the closure
1949 * @param tc the scheduler context
1952 do_read (void* cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
1954 struct Socks5Request *s5r = cls;
1955 struct socks5_client_hello *c_hello;
1956 struct socks5_server_hello *s_hello;
1957 struct socks5_client_request *c_req;
1958 struct socks5_server_response *s_resp;
1964 struct hostent *phost;
1966 struct sockaddr_in remote_addr;
1967 struct in_addr *r_sin_addr;
1969 struct NetworkHandleList *nh;
1971 s5r->rtask = GNUNET_SCHEDULER_NO_TASK;
1973 if ((NULL != tc->write_ready) &&
1974 (GNUNET_NETWORK_fdset_isset (tc->read_ready, s5r->sock)) &&
1975 (s5r->rbuf_len = GNUNET_NETWORK_socket_recv (s5r->sock, s5r->rbuf,
1976 sizeof (s5r->rbuf))))
1978 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1979 "Successfully read %d bytes from socket\n",
1984 if (s5r->rbuf_len != 0)
1985 GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING, "read");
1987 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "client disco!\n");
1989 if (s5r->fwdrtask != GNUNET_SCHEDULER_NO_TASK)
1990 GNUNET_SCHEDULER_cancel (s5r->fwdrtask);
1991 if (s5r->wtask != GNUNET_SCHEDULER_NO_TASK)
1992 GNUNET_SCHEDULER_cancel (s5r->wtask);
1993 if (s5r->fwdwtask != GNUNET_SCHEDULER_NO_TASK)
1994 GNUNET_SCHEDULER_cancel (s5r->fwdwtask);
1995 GNUNET_NETWORK_socket_close (s5r->remote_sock);
1996 GNUNET_NETWORK_socket_close (s5r->sock);
2001 if (s5r->state == SOCKS5_INIT)
2003 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2005 c_hello = (struct socks5_client_hello*)&s5r->rbuf;
2007 GNUNET_assert (c_hello->version == SOCKS_VERSION_5);
2009 s_hello = (struct socks5_server_hello*)&s5r->wbuf;
2010 s5r->wbuf_len = sizeof( struct socks5_server_hello );
2012 s_hello->version = c_hello->version;
2013 s_hello->auth_method = SOCKS_AUTH_NONE;
2015 /* Write response to client */
2016 s5r->wtask = GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL,
2020 s5r->rtask = GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL,
2024 s5r->state = SOCKS5_REQUEST;
2028 if (s5r->state == SOCKS5_REQUEST)
2030 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2031 "Processing SOCKS5 request\n");
2032 c_req = (struct socks5_client_request*)&s5r->rbuf;
2033 s_resp = (struct socks5_server_response*)&s5r->wbuf;
2034 //Only 10byte for ipv4 response!
2035 s5r->wbuf_len = 10;//sizeof (struct socks5_server_response);
2037 GNUNET_assert (c_req->addr_type == 3);
2039 dom_len = *((uint8_t*)(&(c_req->addr_type) + 1));
2040 memset(domain, 0, sizeof(domain));
2041 strncpy(domain, (char*)(&(c_req->addr_type) + 2), dom_len);
2042 req_port = *((uint16_t*)(&(c_req->addr_type) + 2 + dom_len));
2044 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2045 "Requested connection is %s:%d\n",
2049 if (is_tld (domain, GNUNET_GNS_TLD) ||
2050 is_tld (domain, GNUNET_GNS_TLD_ZKEY))
2052 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2053 "Requested connection is gnunet tld\n",
2057 if (ntohs(req_port) == HTTPS_PORT)
2059 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2060 "Requested connection is HTTPS\n");
2061 ret = add_handle_to_ssl_mhd ( s5r->sock, domain );
2063 else if (NULL != httpd)
2065 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2066 "Requested connection is HTTP\n");
2067 nh = GNUNET_malloc (sizeof (struct NetworkHandleList));
2070 GNUNET_CONTAINER_DLL_insert (mhd_httpd_head->socket_handles_head,
2071 mhd_httpd_head->socket_handles_tail,
2074 ret = add_handle_to_mhd ( s5r->sock, httpd );
2079 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2080 _("Failed to start HTTP server\n"));
2081 s_resp->version = 0x05;
2082 s_resp->reply = 0x01;
2083 s5r->cleanup = GNUNET_YES;
2084 s5r->cleanup_sock = GNUNET_YES;
2086 GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL,
2092 /* Signal success */
2093 s_resp->version = 0x05;
2094 s_resp->reply = 0x00;
2095 s_resp->reserved = 0x00;
2096 s_resp->addr_type = 0x01;
2098 s5r->cleanup = GNUNET_YES;
2099 s5r->cleanup_sock = GNUNET_NO;
2101 GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL,
2109 phost = (struct hostent*)gethostbyname (domain);
2112 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2113 "Resolve %s error!\n", domain );
2114 s_resp->version = 0x05;
2115 s_resp->reply = 0x01;
2116 s5r->cleanup = GNUNET_YES;
2117 s5r->cleanup_sock = GNUNET_YES;
2119 GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL,
2125 s5r->remote_sock = GNUNET_NETWORK_socket_create (AF_INET,
2128 r_sin_addr = (struct in_addr*)(phost->h_addr);
2129 remote_ip = r_sin_addr->s_addr;
2130 memset(&remote_addr, 0, sizeof(remote_addr));
2131 remote_addr.sin_family = AF_INET;
2132 #if HAVE_SOCKADDR_IN_SIN_LEN
2133 remote_addr.sin_len = sizeof (remote_addr);
2135 remote_addr.sin_addr.s_addr = remote_ip;
2136 remote_addr.sin_port = req_port;
2138 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2139 "target server: %s:%u\n", inet_ntoa(remote_addr.sin_addr),
2143 GNUNET_NETWORK_socket_connect ( s5r->remote_sock,
2144 (const struct sockaddr*)&remote_addr,
2145 sizeof (remote_addr)))
2146 && (errno != EINPROGRESS))
2148 GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING, "connect");
2149 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2150 "socket request error...\n");
2151 s_resp->version = 0x05;
2152 s_resp->reply = 0x01;
2154 GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL,
2161 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2162 "new remote connection\n");
2164 s_resp->version = 0x05;
2165 s_resp->reply = 0x00;
2166 s_resp->reserved = 0x00;
2167 s_resp->addr_type = 0x01;
2169 s5r->state = SOCKS5_DATA_TRANSFER;
2172 GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL,
2176 GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL,
2184 if (s5r->state == SOCKS5_DATA_TRANSFER)
2186 if ((s5r->remote_sock == NULL) || (s5r->rbuf_len == 0))
2188 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2189 "Closing connection to client\n");
2190 if (s5r->rtask != GNUNET_SCHEDULER_NO_TASK)
2191 GNUNET_SCHEDULER_cancel (s5r->rtask);
2192 if (s5r->fwdwtask != GNUNET_SCHEDULER_NO_TASK)
2193 GNUNET_SCHEDULER_cancel (s5r->fwdwtask);
2194 if (s5r->fwdrtask != GNUNET_SCHEDULER_NO_TASK)
2195 GNUNET_SCHEDULER_cancel (s5r->fwdrtask);
2196 if (s5r->fwdrtask != GNUNET_SCHEDULER_NO_TASK)
2197 GNUNET_SCHEDULER_cancel (s5r->fwdrtask);
2199 if (s5r->remote_sock != NULL)
2200 GNUNET_NETWORK_socket_close (s5r->remote_sock);
2201 GNUNET_NETWORK_socket_close (s5r->sock);
2206 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2207 "forwarding %d bytes from client\n", s5r->rbuf_len);
2210 GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL,
2212 &do_write_remote, s5r);
2214 if (s5r->fwdrtask == GNUNET_SCHEDULER_NO_TASK)
2217 GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL,
2219 &do_read_remote, s5r);
2225 //GNUNET_CONTAINER_DLL_remove (s5conns.head, s5conns.tail, s5r);
2231 * Accept new incoming connections
2233 * @param cls the closure
2234 * @param tc the scheduler context
2237 do_accept (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
2239 struct GNUNET_NETWORK_Handle *s;
2240 struct Socks5Request *s5r;
2242 ltask = GNUNET_SCHEDULER_NO_TASK;
2243 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
2246 ltask = GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL,
2250 s = GNUNET_NETWORK_socket_accept (lsock, NULL, NULL);
2254 GNUNET_log_strerror (GNUNET_ERROR_TYPE_INFO, "accept");
2258 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2259 "Got an inbound connection, waiting for data\n");
2261 s5r = GNUNET_malloc (sizeof (struct Socks5Request));
2263 s5r->state = SOCKS5_INIT;
2264 s5r->wtask = GNUNET_SCHEDULER_NO_TASK;
2265 s5r->fwdwtask = GNUNET_SCHEDULER_NO_TASK;
2266 s5r->fwdrtask = GNUNET_SCHEDULER_NO_TASK;
2267 s5r->rtask = GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL,
2270 //GNUNET_CONTAINER_DLL_insert (s5conns.head, s5conns.tail, s5r);
2275 * Task run on shutdown
2277 * @param cls closure
2278 * @param tc task context
2281 do_shutdown (void *cls,
2282 const struct GNUNET_SCHEDULER_TaskContext *tc)
2285 struct MhdHttpList *hd;
2286 struct MhdHttpList *tmp_hd;
2287 struct NetworkHandleList *nh;
2288 struct NetworkHandleList *tmp_nh;
2289 struct ProxyCurlTask *ctask;
2290 struct ProxyCurlTask *ctask_tmp;
2292 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
2293 "Shutting down...\n");
2295 gnutls_global_deinit ();
2297 if (GNUNET_SCHEDULER_NO_TASK != curl_download_task)
2299 GNUNET_SCHEDULER_cancel (curl_download_task);
2300 curl_download_task = GNUNET_SCHEDULER_NO_TASK;
2303 for (hd = mhd_httpd_head; hd != NULL; hd = tmp_hd)
2307 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2308 "Stopping daemon\n");
2310 if (GNUNET_SCHEDULER_NO_TASK != hd->httpd_task)
2312 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2313 "Stopping select task %d\n",
2315 GNUNET_SCHEDULER_cancel (hd->httpd_task);
2316 hd->httpd_task = GNUNET_SCHEDULER_NO_TASK;
2319 if (NULL != hd->daemon)
2321 MHD_stop_daemon (hd->daemon);
2325 for (nh = hd->socket_handles_head; nh != NULL; nh = tmp_nh)
2329 GNUNET_NETWORK_socket_close (nh->h);
2334 if (NULL != hd->proxy_cert)
2336 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2337 "Free certificate\n");
2338 GNUNET_free (hd->proxy_cert);
2344 for (ctask=ctasks_head; ctask != NULL; ctask=ctask_tmp)
2346 ctask_tmp = ctask->next;
2348 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2349 "Cleaning up cURL task\n");
2351 if (ctask->curl != NULL)
2352 curl_easy_cleanup (ctask->curl);
2354 if (NULL != ctask->headers)
2355 curl_slist_free_all (ctask->headers);
2356 if (NULL != ctask->resolver)
2357 curl_slist_free_all (ctask->resolver);
2359 if (NULL != ctask->response)
2360 MHD_destroy_response (ctask->response);
2363 GNUNET_free (ctask);
2366 GNUNET_GNS_disconnect (gns_handle);
2371 * Compiles a regex for us
2373 * @param re ptr to re struct
2374 * @param rt the expression to compile
2375 * @return 0 on success
2378 compile_regex (regex_t *re, const char* rt)
2383 status = regcomp (re, rt, REG_EXTENDED|REG_NEWLINE);
2386 regerror (status, re, err, 1024);
2387 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2388 "Regex error compiling '%s': %s\n", rt, err);
2396 * Loads the users local zone key
2398 * @return GNUNET_YES on success
2401 load_local_zone_key (const struct GNUNET_CONFIGURATION_Handle *cfg)
2404 struct GNUNET_CRYPTO_RsaPrivateKey *key = NULL;
2405 struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded pkey;
2406 struct GNUNET_CRYPTO_ShortHashCode *zone = NULL;
2407 struct GNUNET_CRYPTO_ShortHashAsciiEncoded zonename;
2409 if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_filename (cfg, "gns",
2410 "ZONEKEY", &keyfile))
2412 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2413 "Unable to load zone key config value!\n");
2417 if (GNUNET_NO == GNUNET_DISK_file_test (keyfile))
2419 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2420 "Unable to load zone key %s!\n", keyfile);
2421 GNUNET_free(keyfile);
2425 key = GNUNET_CRYPTO_rsa_key_create_from_file (keyfile);
2426 GNUNET_CRYPTO_rsa_key_get_public (key, &pkey);
2427 GNUNET_CRYPTO_short_hash(&pkey,
2428 sizeof(struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded),
2430 zone = &local_gns_zone;
2431 GNUNET_CRYPTO_short_hash_to_enc (zone, &zonename);
2432 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2433 "Using zone: %s!\n", &zonename);
2434 GNUNET_CRYPTO_rsa_key_free(key);
2435 GNUNET_free(keyfile);
2437 if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_filename (cfg, "gns",
2438 "PRIVATE_ZONEKEY", &keyfile))
2440 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2441 "Unable to load private zone key config value!\n");
2445 if (GNUNET_NO == GNUNET_DISK_file_test (keyfile))
2447 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2448 "Unable to load private zone key %s!\n", keyfile);
2449 GNUNET_free(keyfile);
2453 key = GNUNET_CRYPTO_rsa_key_create_from_file (keyfile);
2454 GNUNET_CRYPTO_rsa_key_get_public (key, &pkey);
2455 GNUNET_CRYPTO_short_hash(&pkey,
2456 sizeof(struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded),
2457 &local_private_zone);
2458 GNUNET_CRYPTO_short_hash_to_enc (zone, &zonename);
2459 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2460 "Using private zone: %s!\n", &zonename);
2461 GNUNET_CRYPTO_rsa_key_free(key);
2462 GNUNET_free(keyfile);
2464 if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_filename (cfg, "gns",
2465 "SHORTEN_ZONEKEY", &keyfile))
2467 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2468 "Unable to load shorten zone key config value!\n");
2472 if (GNUNET_NO == GNUNET_DISK_file_test (keyfile))
2474 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2475 "Unable to load shorten zone key %s!\n", keyfile);
2476 GNUNET_free(keyfile);
2480 key = GNUNET_CRYPTO_rsa_key_create_from_file (keyfile);
2481 GNUNET_CRYPTO_rsa_key_get_public (key, &pkey);
2482 GNUNET_CRYPTO_short_hash(&pkey,
2483 sizeof(struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded),
2484 &local_shorten_zone);
2485 GNUNET_CRYPTO_short_hash_to_enc (zone, &zonename);
2486 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2487 "Using shorten zone: %s!\n", &zonename);
2488 GNUNET_CRYPTO_rsa_key_free(key);
2489 GNUNET_free(keyfile);
2495 * Main function that will be run
2497 * @param cls closure
2498 * @param args remaining command-line arguments
2499 * @param cfgfile name of the configuration file used (for saving, can be NULL!)
2500 * @param cfg configuration
2503 run (void *cls, char *const *args, const char *cfgfile,
2504 const struct GNUNET_CONFIGURATION_Handle *cfg)
2506 struct sockaddr_in sa;
2507 struct MhdHttpList *hd;
2508 struct sockaddr_un mhd_unix_sock_addr;
2510 char* proxy_sockfile;
2511 char* cafile_cfg = NULL;
2516 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
2519 cafile = cafile_opt;
2523 if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_filename (cfg, "gns-proxy",
2527 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2528 "Unable to load proxy CA config value!\n");
2529 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2530 "No proxy CA provided!\n");
2533 cafile = cafile_cfg;
2536 gnutls_global_init ();
2538 gnutls_x509_crt_init (&proxy_ca.cert);
2539 gnutls_x509_privkey_init (&proxy_ca.key);
2541 load_cert_from_file (proxy_ca.cert, cafile);
2542 load_key_from_file (proxy_ca.key, cafile);
2544 GNUNET_free_non_null (cafile_cfg);
2546 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2547 "Loading Template\n");
2549 compile_regex (&re_dotplus, (char*) RE_A_HREF);
2551 gns_handle = GNUNET_GNS_connect (cfg);
2553 if (GNUNET_NO == load_local_zone_key (cfg))
2555 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2556 "Unable to load zone!\n");
2560 if (NULL == gns_handle)
2562 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2563 "Unable to connect to GNS!\n");
2567 memset (&sa, 0, sizeof (sa));
2568 sa.sin_family = AF_INET;
2569 sa.sin_port = htons (port);
2570 #if HAVE_SOCKADDR_IN_SIN_LEN
2571 sa.sin_len = sizeof (sa);
2574 lsock = GNUNET_NETWORK_socket_create (AF_INET,
2578 if ((NULL == lsock) ||
2580 GNUNET_NETWORK_socket_bind (lsock, (const struct sockaddr *) &sa,
2583 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2584 "Failed to create listen socket bound to `%s'",
2585 GNUNET_a2s ((const struct sockaddr *) &sa, sizeof (sa)));
2587 GNUNET_NETWORK_socket_close (lsock);
2591 if (GNUNET_OK != GNUNET_NETWORK_socket_listen (lsock, 5))
2593 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2594 "Failed to listen on socket bound to `%s'",
2595 GNUNET_a2s ((const struct sockaddr *) &sa, sizeof (sa)));
2599 ltask = GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL,
2600 lsock, &do_accept, NULL);
2605 if (0 != curl_global_init (CURL_GLOBAL_WIN32))
2607 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2608 "cURL global init failed!\n");
2612 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2613 "Proxy listens on port %u\n",
2616 mhd_httpd_head = NULL;
2617 mhd_httpd_tail = NULL;
2618 total_mhd_connections = 0;
2620 if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_filename (cfg, "gns-proxy",
2624 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2625 "Specify PROXY_UNIXPATH in gns-proxy config section!\n");
2629 mhd_unix_socket = GNUNET_NETWORK_socket_create (AF_UNIX,
2633 if (NULL == mhd_unix_socket)
2635 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2636 "Unable to create unix domain socket!\n");
2640 mhd_unix_sock_addr.sun_family = AF_UNIX;
2641 strcpy (mhd_unix_sock_addr.sun_path, proxy_sockfile);
2644 mhd_unix_sock_addr.sun_path[0] = '\0';
2646 #if HAVE_SOCKADDR_IN_SIN_LEN
2647 mhd_unix_sock_addr.sun_len = (u_char) sizeof (struct sockaddr_un);
2650 len = strlen (proxy_sockfile) + sizeof(AF_UNIX);
2652 GNUNET_free (proxy_sockfile);
2654 if (GNUNET_OK != GNUNET_NETWORK_socket_bind (mhd_unix_socket,
2655 (struct sockaddr*)&mhd_unix_sock_addr,
2658 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2659 "Unable to bind unix domain socket!\n");
2663 if (GNUNET_OK != GNUNET_NETWORK_socket_listen (mhd_unix_socket,
2666 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2667 "Unable to listen on unix domain socket!\n");
2671 hd = GNUNET_malloc (sizeof (struct MhdHttpList));
2672 hd->is_ssl = GNUNET_NO;
2673 strcpy (hd->domain, "");
2674 httpd = MHD_start_daemon (MHD_USE_DEBUG, 4444, //Dummy port
2676 &create_response, hd,
2677 MHD_OPTION_LISTEN_SOCKET, GNUNET_NETWORK_get_fd (mhd_unix_socket),
2678 MHD_OPTION_CONNECTION_LIMIT, MHD_MAX_CONNECTIONS,
2679 MHD_OPTION_CONNECTION_TIMEOUT, (unsigned int) 16,
2680 MHD_OPTION_NOTIFY_COMPLETED,
2684 GNUNET_assert (httpd != NULL);
2686 hd->httpd_task = GNUNET_SCHEDULER_NO_TASK;
2688 GNUNET_CONTAINER_DLL_insert (mhd_httpd_head, mhd_httpd_tail, hd);
2692 GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL,
2693 &do_shutdown, NULL);
2699 * The main function for gnunet-gns-proxy.
2701 * @param argc number of arguments from the command line
2702 * @param argv command line arguments
2703 * @return 0 ok, 1 on error
2706 main (int argc, char *const *argv)
2708 static const struct GNUNET_GETOPT_CommandLineOption options[] = {
2710 gettext_noop ("listen on specified port"), 1,
2711 &GNUNET_GETOPT_set_string, &port},
2712 {'a', "authority", NULL,
2713 gettext_noop ("pem file to use as CA"), 1,
2714 &GNUNET_GETOPT_set_string, &cafile_opt},
2715 GNUNET_GETOPT_OPTION_END
2720 if (GNUNET_OK != GNUNET_STRINGS_get_utf8_args (argc, argv, &argc, &argv))
2724 GNUNET_log_setup ("gnunet-gns-proxy", "WARNING", NULL);
2727 GNUNET_PROGRAM_run (argc, argv, "gnunet-gns-proxy",
2728 _("GNUnet GNS proxy"),
2730 &run, NULL)) ? 0 : 1;
2731 GNUNET_free_non_null ((char*)argv);