2 This file is part of GNUnet.
3 Copyright (C) 2013 GNUnet e.V.
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., 51 Franklin Street, Fifth Floor,
18 Boston, MA 02110-1301, USA.
22 * @file gns/gnunet-bcd.c
23 * @author Christian Grothoff
24 * @brief HTTP server to create GNS business cards
28 #include <microhttpd.h>
29 #include "gnunet_util_lib.h"
32 * Error page to display if submitted GNS key is invalid.
34 #define INVALID_GNSKEY "<html><head><title>Error</title><body>Invalid GNS public key given.</body></html>"
37 * Error page to display on 404.
39 #define NOT_FOUND "<html><head><title>Error</title><body>404 not found</body></html>"
42 * Handle to the HTTP server as provided by libmicrohttpd
44 static struct MHD_Daemon *daemon_handle;
49 static const struct GNUNET_CONFIGURATION_Handle *cfg;
52 * Our primary task for the HTTPD.
54 static struct GNUNET_SCHEDULER_Task * http_task;
59 static struct MHD_Response *main_response;
62 * Error: invalid gns key.
64 static struct MHD_Response *invalid_gnskey_response;
69 static struct MHD_Response *not_found_response;
72 * Absolute name of the 'gns-bcd.tex' file.
79 static unsigned int port = 8888;
90 * Main request handler.
93 access_handler_callback (void *cls,
94 struct MHD_Connection *connection,
98 const char *upload_data,
99 size_t * upload_data_size,
103 static const struct Entry map[] = {
104 { "prefix", "prefix" },
106 { "suffix", "suffix" },
107 { "street", "street" },
109 { "phone", "phone" },
112 { "homepage", "homepage" },
114 { "departmenti18n", "departmentde"},
115 { "departmenten", "departmenten"},
116 { "subdepartmenti18n", "subdepartmentde"},
117 { "subdepartmenten", "subdepartmenten"},
118 { "jobtitlei18n", "jobtitlegerman"},
119 { "jobtitleen", "jobtitleenglish"},
120 { "subdepartmenten", "subdepartmenten"},
124 if (0 != strcmp (method, MHD_HTTP_METHOD_GET))
126 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
127 _("Refusing `%s' request to HTTP server\n"),
131 if (NULL == *con_cls)
134 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
135 "Sending 100 CONTINUE reply\n");
136 return MHD_YES; /* send 100 continue */
138 if (0 == strcasecmp (url, "/"))
139 return MHD_queue_response (connection,
142 if (0 == strcasecmp (url, "/submit.pdf"))
148 struct GNUNET_CRYPTO_EcdsaPublicKey pub;
152 struct MHD_Response *response;
156 const char *gpg_fp = MHD_lookup_connection_value (connection,
157 MHD_GET_ARGUMENT_KIND,
159 const char *gns_nick = MHD_lookup_connection_value (connection,
160 MHD_GET_ARGUMENT_KIND,
162 const char *gnskey = MHD_lookup_connection_value (connection,
163 MHD_GET_ARGUMENT_KIND,
165 if ( (NULL == gnskey) ||
167 GNUNET_CRYPTO_ecdsa_public_key_from_string (gnskey,
171 return MHD_queue_response (connection,
173 invalid_gnskey_response);
175 tmp = GNUNET_DISK_mkdtemp (gnskey);
178 GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_ERROR, "mktemp", gnskey);
181 GNUNET_asprintf (&deffile,
183 tmp, DIR_SEPARATOR_STR, "def.tex");
184 f = FOPEN (deffile, "w");
187 GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_ERROR, "open", deffile);
188 GNUNET_free (deffile);
189 GNUNET_DISK_directory_remove (tmp);
193 for (i=0; NULL != map[i].formname; i++)
195 const char *val = MHD_lookup_connection_value (connection,
196 MHD_GET_ARGUMENT_KIND,
201 map[i].texname, val);
212 slen = strlen (gpg_fp);
213 gpg1 = GNUNET_strndup (gpg_fp, slen / 2);
214 gpg2 = GNUNET_strdup (&gpg_fp[slen / 2]);
216 "\\def\\gpglineone{%s}\n\\def\\gpglinetwo{%s}\n",
222 "\\def\\gns{%s/%s}\n",
224 (NULL == gns_nick) ? "" : gns_nick);
227 "cd %s; cp %s gns-bcd.tex | pdflatex --enable-write18 gns-bcd.tex > /dev/null 2> /dev/null",
230 GNUNET_free (deffile);
232 if (WIFSIGNALED (ret) || (0 != WEXITSTATUS(ret)))
233 GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_ERROR,
236 GNUNET_asprintf (&deffile,
238 tmp, DIR_SEPARATOR_STR, "gns-bcd.pdf");
239 fd = OPEN (deffile, O_RDONLY);
242 GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_ERROR,
245 GNUNET_free (deffile);
247 GNUNET_DISK_directory_remove (tmp);
251 GNUNET_break (0 == STAT (deffile, &st));
252 if (NULL == (response = MHD_create_response_from_fd ((size_t) st.st_size, fd)))
255 GNUNET_break (0 == CLOSE (fd));
256 GNUNET_free (deffile);
258 GNUNET_DISK_directory_remove (tmp);
262 (void) MHD_add_response_header (response,
263 MHD_HTTP_HEADER_CONTENT_TYPE,
265 ret = MHD_queue_response (connection,
268 MHD_destroy_response (response);
269 GNUNET_free (deffile);
271 GNUNET_DISK_directory_remove (tmp);
275 return MHD_queue_response (connection,
282 * Function that queries MHD's select sets and
283 * starts the task waiting for them.
285 static struct GNUNET_SCHEDULER_Task *
286 prepare_daemon (struct MHD_Daemon *daemon_handle);
290 * Call MHD to process pending requests and then go back
291 * and schedule the next run.
294 run_daemon (void *cls)
296 struct MHD_Daemon *daemon_handle = cls;
299 GNUNET_assert (MHD_YES == MHD_run (daemon_handle));
300 http_task = prepare_daemon (daemon_handle);
305 * Function that queries MHD's select sets and
306 * starts the task waiting for them.
308 static struct GNUNET_SCHEDULER_Task *
309 prepare_daemon (struct MHD_Daemon *daemon_handle)
311 struct GNUNET_SCHEDULER_Task * ret;
315 struct GNUNET_NETWORK_FDSet *wrs;
316 struct GNUNET_NETWORK_FDSet *wws;
318 MHD_UNSIGNED_LONG_LONG timeout;
320 struct GNUNET_TIME_Relative tv;
325 wrs = GNUNET_NETWORK_fdset_create ();
326 wws = GNUNET_NETWORK_fdset_create ();
328 GNUNET_assert (MHD_YES == MHD_get_fdset (daemon_handle, &rs, &ws, &es, &max));
329 haveto = MHD_get_timeout (daemon_handle, &timeout);
330 if (haveto == MHD_YES)
331 tv.rel_value_us = (uint64_t) timeout * 1000LL;
333 tv = GNUNET_TIME_UNIT_FOREVER_REL;
334 GNUNET_NETWORK_fdset_copy_native (wrs, &rs, max + 1);
335 GNUNET_NETWORK_fdset_copy_native (wws, &ws, max + 1);
337 GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_HIGH,
339 &run_daemon, daemon_handle);
340 GNUNET_NETWORK_fdset_destroy (wrs);
341 GNUNET_NETWORK_fdset_destroy (wws);
347 * Start server offering our hostlist.
349 * @return #GNUNET_OK on success
354 if ((0 == port) || (port > UINT16_MAX))
356 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
357 _("Invalid port number %u. Exiting.\n"),
359 return GNUNET_SYSERR;
361 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
362 _("Businesscard HTTP server starts on %u\n"),
364 daemon_handle = MHD_start_daemon (MHD_USE_DUAL_STACK | MHD_USE_DEBUG,
366 NULL /* accept_policy_callback */, NULL,
367 &access_handler_callback, NULL,
368 MHD_OPTION_CONNECTION_LIMIT, (unsigned int) 512,
369 MHD_OPTION_PER_IP_CONNECTION_LIMIT, (unsigned int) 2,
370 MHD_OPTION_CONNECTION_TIMEOUT, (unsigned int) 60,
371 MHD_OPTION_CONNECTION_MEMORY_LIMIT, (size_t) (16 * 1024),
373 if (NULL == daemon_handle)
375 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
376 _("Could not start businesscard HTTP server on port %u\n"),
377 (unsigned short) port);
378 return GNUNET_SYSERR;
380 http_task = prepare_daemon (daemon_handle);
389 server_stop (void *cls)
391 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
392 "HTTP server shutdown\n");
393 if (NULL != http_task)
395 GNUNET_SCHEDULER_cancel (http_task);
398 if (NULL != daemon_handle)
400 MHD_stop_daemon (daemon_handle);
401 daemon_handle = NULL;
403 if (NULL != main_response)
405 MHD_destroy_response (main_response);
406 main_response = NULL;
408 if (NULL != invalid_gnskey_response)
410 MHD_destroy_response (invalid_gnskey_response);
411 invalid_gnskey_response = NULL;
413 if (NULL != not_found_response)
415 MHD_destroy_response (not_found_response);
416 not_found_response = NULL;
420 GNUNET_free (resfile);
427 * Main function that will be run.
430 * @param args remaining command-line arguments
431 * @param cfgfile name of the configuration file used (for saving, can be NULL!)
432 * @param c configuration
438 const struct GNUNET_CONFIGURATION_Handle *c)
446 dir = GNUNET_OS_installation_get_path (GNUNET_OS_IPK_DATADIR);
447 GNUNET_assert (NULL != dir);
448 GNUNET_asprintf (&fn,
453 GNUNET_asprintf (&resfile,
459 fd = OPEN (fn, O_RDONLY);
462 GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_ERROR,
468 if (0 != STAT (fn, &st))
470 GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_ERROR,
478 if (NULL == (main_response = MHD_create_response_from_fd ((size_t) st.st_size, fd)))
481 GNUNET_break (0 == CLOSE (fd));
484 (void) MHD_add_response_header (main_response,
485 MHD_HTTP_HEADER_CONTENT_TYPE,
487 invalid_gnskey_response = MHD_create_response_from_buffer (strlen (INVALID_GNSKEY),
489 MHD_RESPMEM_PERSISTENT);
490 (void) MHD_add_response_header (invalid_gnskey_response,
491 MHD_HTTP_HEADER_CONTENT_TYPE,
493 not_found_response = MHD_create_response_from_buffer (strlen (NOT_FOUND),
495 MHD_RESPMEM_PERSISTENT);
496 (void) MHD_add_response_header (not_found_response,
497 MHD_HTTP_HEADER_CONTENT_TYPE,
502 GNUNET_SCHEDULER_add_shutdown (&server_stop,
508 * The main function for gnunet-gns.
510 * @param argc number of arguments from the command line
511 * @param argv command line arguments
512 * @return 0 ok, 1 on error
515 main (int argc, char *const *argv)
517 struct GNUNET_GETOPT_CommandLineOption options[] = {
519 GNUNET_GETOPT_OPTION_SET_UINT ('p',
522 gettext_noop ("Run HTTP serve on port PORT (default is 8888)"),
525 GNUNET_GETOPT_OPTION_END
529 if (GNUNET_OK != GNUNET_STRINGS_get_utf8_args (argc, argv, &argc, &argv))
531 GNUNET_log_setup ("gnunet-bcd", "WARNING", NULL);
534 GNUNET_PROGRAM_run (argc, argv, "gnunet-bcd",
535 _("GNUnet HTTP server to create business cards"),
537 &run, NULL)) ? 0 : 1;
538 GNUNET_free ((void*) argv);
543 /* end of gnunet-bcd.c */