GNUnet  0.11.x
gnunet-service-arm.c
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1 /*
2  This file is part of GNUnet.
3  Copyright (C) 2009-2011, 2015, 2016 GNUnet e.V.
4 
5  GNUnet is free software: you can redistribute it and/or modify it
6  under the terms of the GNU Affero General Public License as published
7  by the Free Software Foundation, either version 3 of the License,
8  or (at your option) any later version.
9 
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  Affero General Public License for more details.
14 
15  You should have received a copy of the GNU Affero General Public License
16  along with this program. If not, see <http://www.gnu.org/licenses/>.
17 
18  SPDX-License-Identifier: AGPL3.0-or-later
19  */
20 
26 #include "platform.h"
27 #include "gnunet_util_lib.h"
28 #include "gnunet_arm_service.h"
29 #include "gnunet_protocols.h"
30 #include "arm.h"
31 
32 #define LOG(kind, ...) GNUNET_log_from (kind, "util", __VA_ARGS__)
33 
34 #define LOG_STRERROR(kind, syscall) \
35  GNUNET_log_from_strerror (kind, "util", syscall)
36 
37 
38 #if HAVE_WAIT4
39 
42 static char *wait_filename;
43 
47 static FILE *wait_file;
48 #endif
49 
50 
56 #define MAX_NOTIFY_QUEUE 1024
57 
58 
62 struct ServiceList;
63 
64 
69 {
74 
79 
83  struct sockaddr *service_addr;
84 
88  struct ServiceList *sl;
89 
93  socklen_t service_addr_len;
94 
99 
104 };
105 
106 
111 {
115  struct ServiceList *next;
116 
120  struct ServiceList *prev;
121 
126 
131 
135  char *name;
136 
140  char *binary;
141 
145  char *config;
146 
152 
157 
162 
167 
171  struct GNUNET_TIME_Absolute last_started_at;
172 
176  struct GNUNET_TIME_Absolute restart_at;
177 
182  struct GNUNET_TIME_Absolute killed_at;
183 
190 
196 
201 };
202 
206 static struct ServiceList *running_head;
207 
211 static struct ServiceList *running_tail;
212 
216 static const struct GNUNET_CONFIGURATION_Handle *cfg;
217 
221 static char *prefix_command;
222 
226 static char *final_option;
227 
232 
238 
243 
247 static int in_shutdown;
248 
252 static int global_ret;
253 
257 static int start_user = GNUNET_YES;
258 
263 
275 
280 
281 
292 static void
293 add_unixpath (struct sockaddr **saddrs,
294  socklen_t *saddrlens,
295  const char *unixpath,
296  int abstract)
297 {
298 #ifdef AF_UNIX
299  struct sockaddr_un *un;
300 
301  un = GNUNET_new (struct sockaddr_un);
302  un->sun_family = AF_UNIX;
303  GNUNET_strlcpy (un->sun_path, unixpath, sizeof(un->sun_path));
304 #ifdef __linux__
305  if (GNUNET_YES == abstract)
306  un->sun_path[0] = '\0';
307 #endif
308 #if HAVE_SOCKADDR_UN_SUN_LEN
309  un->sun_len = (u_char) sizeof(struct sockaddr_un);
310 #endif
311  *saddrs = (struct sockaddr *) un;
312  *saddrlens = sizeof(struct sockaddr_un);
313 #else
314  /* this function should never be called
315  * unless AF_UNIX is defined! */
316  GNUNET_assert (0);
317 #endif
318 }
319 
320 
341 static int
343  const struct GNUNET_CONFIGURATION_Handle *cfg,
344  struct sockaddr ***addrs,
345  socklen_t **addr_lens)
346 {
347  int disablev6;
348  struct GNUNET_NETWORK_Handle *desc;
349  unsigned long long port;
350  char *unixpath;
351  struct addrinfo hints;
352  struct addrinfo *res;
353  struct addrinfo *pos;
354  struct addrinfo *next;
355  unsigned int i;
356  int resi;
357  int ret;
358  int abstract;
359  struct sockaddr **saddrs;
360  socklen_t *saddrlens;
361  char *hostname;
362 
363  *addrs = NULL;
364  *addr_lens = NULL;
365  desc = NULL;
366  if (GNUNET_CONFIGURATION_have_value (cfg, service_name, "DISABLEV6"))
367  {
368  if (GNUNET_SYSERR ==
369  (disablev6 = GNUNET_CONFIGURATION_get_value_yesno (cfg,
370  service_name,
371  "DISABLEV6")))
372  return GNUNET_SYSERR;
373  }
374  else
375  disablev6 = GNUNET_NO;
376 
377  if (! disablev6)
378  {
379  /* probe IPv6 support */
380  desc = GNUNET_NETWORK_socket_create (PF_INET6, SOCK_STREAM, 0);
381  if (NULL == desc)
382  {
383  if ((ENOBUFS == errno) || (ENOMEM == errno) || (ENFILE == errno) ||
384  (EACCES == errno))
385  {
387  return GNUNET_SYSERR;
388  }
390  _ (
391  "Disabling IPv6 support for service `%s', failed to create IPv6 socket: %s\n"),
392  service_name,
393  strerror (errno));
394  disablev6 = GNUNET_YES;
395  }
396  else
397  {
399  desc = NULL;
400  }
401  }
402 
403  port = 0;
404  if (GNUNET_CONFIGURATION_have_value (cfg, service_name, "PORT"))
405  {
407  service_name,
408  "PORT",
409  &port))
410  {
412  _ ("Require valid port number for service `%s' in configuration!\n"),
413  service_name);
414  }
415  if (port > 65535)
416  {
418  _ ("Require valid port number for service `%s' in configuration!\n"),
419  service_name);
420  return GNUNET_SYSERR;
421  }
422  }
423 
424  if (GNUNET_CONFIGURATION_have_value (cfg, service_name, "BINDTO"))
425  {
428  service_name,
429  "BINDTO",
430  &hostname));
431  }
432  else
433  hostname = NULL;
434 
435  unixpath = NULL;
436  abstract = GNUNET_NO;
437 #ifdef AF_UNIX
438  if ((GNUNET_YES ==
439  GNUNET_CONFIGURATION_have_value (cfg, service_name, "UNIXPATH")) &&
441  service_name,
442  "UNIXPATH",
443  &unixpath)) &&
444  (0 < strlen (unixpath)))
445  {
446  /* probe UNIX support */
447  struct sockaddr_un s_un;
448 
449  if (strlen (unixpath) >= sizeof(s_un.sun_path))
450  {
452  _ ("UNIXPATH `%s' too long, maximum length is %llu\n"),
453  unixpath,
454  (unsigned long long) sizeof(s_un.sun_path));
455  unixpath = GNUNET_NETWORK_shorten_unixpath (unixpath);
456  LOG (GNUNET_ERROR_TYPE_INFO, _ ("Using `%s' instead\n"), unixpath);
457  }
458 #ifdef __linux__
459  abstract = GNUNET_CONFIGURATION_get_value_yesno (cfg,
460  "TESTING",
461  "USE_ABSTRACT_SOCKETS");
462  if (GNUNET_SYSERR == abstract)
463  abstract = GNUNET_NO;
464 #endif
465  if ((GNUNET_YES != abstract) &&
468  }
469  if (NULL != unixpath)
470  {
471  desc = GNUNET_NETWORK_socket_create (AF_UNIX, SOCK_STREAM, 0);
472  if (NULL == desc)
473  {
474  if ((ENOBUFS == errno) || (ENOMEM == errno) || (ENFILE == errno) ||
475  (EACCES == errno))
476  {
478  GNUNET_free (hostname);
479  GNUNET_free (unixpath);
480  return GNUNET_SYSERR;
481  }
483  _ (
484  "Disabling UNIX domain socket support for service `%s', failed to create UNIX domain socket: %s\n"),
485  service_name,
486  strerror (errno));
487  GNUNET_free (unixpath);
488  unixpath = NULL;
489  }
490  else
491  {
493  desc = NULL;
494  }
495  }
496 #endif
497 
498  if ((0 == port) && (NULL == unixpath))
499  {
501  service_name,
502  "START_ON_DEMAND"))
504  _ (
505  "Have neither PORT nor UNIXPATH for service `%s', but one is required\n"),
506  service_name);
507  GNUNET_free (hostname);
508  return GNUNET_SYSERR;
509  }
510  if (0 == port)
511  {
512  saddrs = GNUNET_new_array (2, struct sockaddr *);
513  saddrlens = GNUNET_new_array (2, socklen_t);
514  add_unixpath (saddrs, saddrlens, unixpath, abstract);
515  GNUNET_free (unixpath);
516  GNUNET_free (hostname);
517  *addrs = saddrs;
518  *addr_lens = saddrlens;
519  return 1;
520  }
521 
522  if (NULL != hostname)
523  {
525  "Resolving `%s' since that is where `%s' will bind to.\n",
526  hostname,
527  service_name);
528  memset (&hints, 0, sizeof(struct addrinfo));
529  if (disablev6)
530  hints.ai_family = AF_INET;
531  hints.ai_protocol = IPPROTO_TCP;
532  if ((0 != (ret = getaddrinfo (hostname, NULL, &hints, &res))) ||
533  (NULL == res))
534  {
536  _ ("Failed to resolve `%s': %s\n"),
537  hostname,
538  gai_strerror (ret));
539  GNUNET_free (hostname);
540  GNUNET_free (unixpath);
541  return GNUNET_SYSERR;
542  }
543  next = res;
544  i = 0;
545  while (NULL != (pos = next))
546  {
547  next = pos->ai_next;
548  if ((disablev6) && (pos->ai_family == AF_INET6))
549  continue;
550  i++;
551  }
552  if (0 == i)
553  {
555  _ ("Failed to find %saddress for `%s'.\n"),
556  disablev6 ? "IPv4 " : "",
557  hostname);
558  freeaddrinfo (res);
559  GNUNET_free (hostname);
560  GNUNET_free (unixpath);
561  return GNUNET_SYSERR;
562  }
563  resi = i;
564  if (NULL != unixpath)
565  resi++;
566  saddrs = GNUNET_new_array (resi + 1, struct sockaddr *);
567  saddrlens = GNUNET_new_array (resi + 1, socklen_t);
568  i = 0;
569  if (NULL != unixpath)
570  {
571  add_unixpath (saddrs, saddrlens, unixpath, abstract);
572  i++;
573  }
574  next = res;
575  while (NULL != (pos = next))
576  {
577  next = pos->ai_next;
578  if ((disablev6) && (AF_INET6 == pos->ai_family))
579  continue;
580  if ((IPPROTO_TCP != pos->ai_protocol) && (0 != pos->ai_protocol))
581  continue; /* not TCP */
582  if ((SOCK_STREAM != pos->ai_socktype) && (0 != pos->ai_socktype))
583  continue; /* huh? */
585  "Service `%s' will bind to `%s'\n",
586  service_name,
587  GNUNET_a2s (pos->ai_addr, pos->ai_addrlen));
588  if (AF_INET == pos->ai_family)
589  {
590  GNUNET_assert (sizeof(struct sockaddr_in) == pos->ai_addrlen);
591  saddrlens[i] = pos->ai_addrlen;
592  saddrs[i] = GNUNET_malloc (saddrlens[i]);
593  GNUNET_memcpy (saddrs[i], pos->ai_addr, saddrlens[i]);
594  ((struct sockaddr_in *) saddrs[i])->sin_port = htons (port);
595  }
596  else
597  {
598  GNUNET_assert (AF_INET6 == pos->ai_family);
599  GNUNET_assert (sizeof(struct sockaddr_in6) == pos->ai_addrlen);
600  saddrlens[i] = pos->ai_addrlen;
601  saddrs[i] = GNUNET_malloc (saddrlens[i]);
602  GNUNET_memcpy (saddrs[i], pos->ai_addr, saddrlens[i]);
603  ((struct sockaddr_in6 *) saddrs[i])->sin6_port = htons (port);
604  }
605  i++;
606  }
607  GNUNET_free (hostname);
608  freeaddrinfo (res);
609  resi = i;
610  }
611  else
612  {
613  /* will bind against everything, just set port */
614  if (disablev6)
615  {
616  /* V4-only */
617  resi = 1;
618  if (NULL != unixpath)
619  resi++;
620  i = 0;
621  saddrs = GNUNET_new_array (resi + 1, struct sockaddr *);
622  saddrlens = GNUNET_new_array (resi + 1, socklen_t);
623  if (NULL != unixpath)
624  {
625  add_unixpath (saddrs, saddrlens, unixpath, abstract);
626  i++;
627  }
628  saddrlens[i] = sizeof(struct sockaddr_in);
629  saddrs[i] = GNUNET_malloc (saddrlens[i]);
630 #if HAVE_SOCKADDR_IN_SIN_LEN
631  ((struct sockaddr_in *) saddrs[i])->sin_len = saddrlens[i];
632 #endif
633  ((struct sockaddr_in *) saddrs[i])->sin_family = AF_INET;
634  ((struct sockaddr_in *) saddrs[i])->sin_port = htons (port);
635  }
636  else
637  {
638  /* dual stack */
639  resi = 2;
640  if (NULL != unixpath)
641  resi++;
642  saddrs = GNUNET_new_array (resi + 1, struct sockaddr *);
643  saddrlens = GNUNET_new_array (resi + 1, socklen_t);
644  i = 0;
645  if (NULL != unixpath)
646  {
647  add_unixpath (saddrs, saddrlens, unixpath, abstract);
648  i++;
649  }
650  saddrlens[i] = sizeof(struct sockaddr_in6);
651  saddrs[i] = GNUNET_malloc (saddrlens[i]);
652 #if HAVE_SOCKADDR_IN_SIN_LEN
653  ((struct sockaddr_in6 *) saddrs[i])->sin6_len = saddrlens[0];
654 #endif
655  ((struct sockaddr_in6 *) saddrs[i])->sin6_family = AF_INET6;
656  ((struct sockaddr_in6 *) saddrs[i])->sin6_port = htons (port);
657  i++;
658  saddrlens[i] = sizeof(struct sockaddr_in);
659  saddrs[i] = GNUNET_malloc (saddrlens[i]);
660 #if HAVE_SOCKADDR_IN_SIN_LEN
661  ((struct sockaddr_in *) saddrs[i])->sin_len = saddrlens[1];
662 #endif
663  ((struct sockaddr_in *) saddrs[i])->sin_family = AF_INET;
664  ((struct sockaddr_in *) saddrs[i])->sin_port = htons (port);
665  }
666  }
667  GNUNET_free (unixpath);
668  *addrs = saddrs;
669  *addr_lens = saddrlens;
670  return resi;
671 }
672 
673 
684 static void
686  const char *name,
687  uint64_t request_id,
689 {
690  struct GNUNET_MQ_Envelope *env;
692 
693  (void) name;
695  msg->result = htonl (result);
696  msg->arm_msg.request_id = GNUNET_htonll (request_id);
698 }
699 
700 
709 static void
710 broadcast_status (const char *name,
713 {
714  struct GNUNET_MQ_Envelope *env;
716  size_t namelen;
717 
719  "Sending status %u of service `%s' to client\n",
720  (unsigned int) status,
721  name);
722  namelen = strlen (name) + 1;
724  msg->status = htonl ((uint32_t) (status));
725  GNUNET_memcpy ((char *) &msg[1], name, namelen);
726  if (NULL == unicast)
727  {
728  if (NULL != notifier)
730  &msg->header,
731  GNUNET_YES);
732  GNUNET_MQ_discard (env);
733  }
734  else
735  {
737  }
738 }
739 
740 
749 static void
751  struct GNUNET_SERVICE_Client *client,
752  uint64_t request_id)
753 {
754  char *loprefix;
755  char *options;
756  int use_debug;
757  int is_simple_service;
758  struct ServiceListeningInfo *sli;
759  int *lsocks;
760  unsigned int ls;
761  char *binary;
762  char *quotedbinary;
763 
764  /* calculate listen socket list */
765  lsocks = NULL;
766  ls = 0;
767  for (sli = sl->listen_head; NULL != sli; sli = sli->next)
768  {
769  GNUNET_array_append (lsocks,
770  ls,
772  if (NULL != sli->accept_task)
773  {
775  sli->accept_task = NULL;
776  }
777  }
778 
779  GNUNET_array_append (lsocks, ls, -1);
780 
781  /* obtain configuration */
783  sl->name,
784  "PREFIX",
785  &loprefix))
786  loprefix = GNUNET_strdup (prefix_command);
787  else
788  loprefix = GNUNET_CONFIGURATION_expand_dollar (cfg, loprefix);
790  sl->name,
791  "OPTIONS",
792  &options))
793  options = NULL;
794  else
795  options = GNUNET_CONFIGURATION_expand_dollar (cfg, options);
796  {
797  char *new_options;
798  char *optpos;
799  char *fin_options;
800 
801  fin_options = GNUNET_strdup (final_option);
802  /* replace '{}' with service name */
803  while (NULL != (optpos = strstr (fin_options, "{}")))
804  {
805  /* terminate string at opening parenthesis */
806  *optpos = 0;
807  GNUNET_asprintf (&new_options,
808  "%s%s%s",
809  fin_options,
810  sl->name,
811  optpos + 2);
812  GNUNET_free (fin_options);
813  fin_options = new_options;
814  }
815  if (NULL != options)
816  {
817  /* combine "fin_options" with "options" */
818  optpos = options;
819  GNUNET_asprintf (&options, "%s %s", fin_options, optpos);
820  GNUNET_free (fin_options);
821  GNUNET_free (optpos);
822  }
823  else
824  {
825  /* only have "fin_options", use that */
826  options = fin_options;
827  }
828  }
829  options = GNUNET_CONFIGURATION_expand_dollar (cfg, options);
830  use_debug = GNUNET_CONFIGURATION_get_value_yesno (cfg, sl->name, "DEBUG");
831  {
832  const char *service_type = NULL;
833  const char *choices[] = { "GNUNET", "SIMPLE", NULL };
834 
835  is_simple_service = GNUNET_NO;
837  sl->name,
838  "TYPE",
839  choices,
840  &service_type)) &&
841  (0 == strcasecmp (service_type, "SIMPLE")))
842  is_simple_service = GNUNET_YES;
843  }
844 
845  GNUNET_assert (NULL == sl->proc);
846  if (GNUNET_YES == is_simple_service)
847  {
848  /* A simple service will receive no GNUnet specific
849  command line options. */
850  binary = GNUNET_strdup (sl->binary);
851  binary = GNUNET_CONFIGURATION_expand_dollar (cfg, binary);
852  GNUNET_asprintf (&quotedbinary, "\"%s\"", sl->binary);
854  "Starting simple service `%s' using binary `%s'\n",
855  sl->name,
856  sl->binary);
857  /* FIXME: dollar expansion should only be done outside
858  * of ''-quoted strings, escaping should be considered. */
859  if (NULL != options)
860  options = GNUNET_CONFIGURATION_expand_dollar (cfg, options);
865  lsocks,
866  loprefix,
867  quotedbinary,
868  options,
869  NULL);
870  }
871  else
872  {
873  /* actually start process */
875  "Starting service `%s' using binary `%s' and configuration `%s'\n",
876  sl->name,
877  sl->binary,
878  sl->config);
880  GNUNET_asprintf (&quotedbinary, "\"%s\"", binary);
881 
882  if (GNUNET_YES == use_debug)
883  {
884  if (NULL == sl->config)
886  ?
889  :
891  lsocks,
892  loprefix,
893  quotedbinary,
894  "-L",
895  "DEBUG",
896  options,
897  NULL);
898  else
900  ?
901  GNUNET_OS_INHERIT_STD_OUT_AND_ERR
903  :
904  GNUNET_OS_INHERIT_STD_OUT_AND_ERR,
905  lsocks,
906  loprefix,
907  quotedbinary,
908  "-c",
909  sl->config,
910  "-L",
911  "DEBUG",
912  options,
913  NULL);
914  }
915  else
916  {
917  if (NULL == sl->config)
919  ?
922  :
924  lsocks,
925  loprefix,
926  quotedbinary,
927  options,
928  NULL);
929  else
931  ?
932  GNUNET_OS_INHERIT_STD_OUT_AND_ERR
934  :
935  GNUNET_OS_INHERIT_STD_OUT_AND_ERR,
936  lsocks,
937  loprefix,
938  quotedbinary,
939  "-c",
940  sl->config,
941  options,
942  NULL);
943  }
944  }
945  GNUNET_free (binary);
946  GNUNET_free (quotedbinary);
948  if (NULL == sl->proc)
949  {
951  _ ("Failed to start service `%s'\n"),
952  sl->name);
953  if (client)
954  signal_result (client,
955  sl->name,
956  request_id,
958  }
959  else
960  {
962  _ ("Starting service `%s'\n"),
963  sl->name);
965  if (client)
966  signal_result (client, sl->name, request_id, GNUNET_ARM_RESULT_STARTING);
967  }
968  /* clean up */
969  GNUNET_free (loprefix);
970  GNUNET_free (options);
971  GNUNET_array_grow (lsocks, ls, 0);
972 }
973 
974 
982 static struct ServiceList *
983 find_service (const char *name)
984 {
985  struct ServiceList *sl;
986 
987  sl = running_head;
988  while (sl != NULL)
989  {
990  if (0 == strcasecmp (sl->name, name))
991  return sl;
992  sl = sl->next;
993  }
994  return NULL;
995 }
996 
997 
1004 static void
1006 {
1007  struct ServiceListeningInfo *sli = cls;
1008  struct ServiceList *sl = sli->sl;
1009 
1010  sli->accept_task = NULL;
1012  start_process (sl, NULL, 0);
1013 }
1014 
1015 
1024 static void
1025 create_listen_socket (struct sockaddr *sa,
1026  socklen_t addr_len,
1027  struct ServiceList *sl)
1028 {
1029  static int on = 1;
1030  struct GNUNET_NETWORK_Handle *sock;
1031  struct ServiceListeningInfo *sli;
1032 
1033  int match_uid;
1034  int match_gid;
1035 
1036  switch (sa->sa_family)
1037  {
1038  case AF_INET:
1039  sock = GNUNET_NETWORK_socket_create (PF_INET, SOCK_STREAM, 0);
1040  break;
1041 
1042  case AF_INET6:
1043  sock = GNUNET_NETWORK_socket_create (PF_INET6, SOCK_STREAM, 0);
1044  break;
1045 
1046  case AF_UNIX:
1047  if (0 == strcmp (GNUNET_a2s (sa, addr_len),
1048  "@")) /* Do not bind to blank UNIX path! */
1049  return;
1050  sock = GNUNET_NETWORK_socket_create (PF_UNIX, SOCK_STREAM, 0);
1051  break;
1052 
1053  default:
1054  GNUNET_break (0);
1055  sock = NULL;
1056  errno = EAFNOSUPPORT;
1057  break;
1058  }
1059  if (NULL == sock)
1060  {
1062  _ ("Unable to create socket for service `%s': %s\n"),
1063  sl->name,
1064  strerror (errno));
1065  GNUNET_free (sa);
1066  return;
1067  }
1069  SOL_SOCKET,
1070  SO_REUSEADDR,
1071  &on,
1072  sizeof(on)))
1074  "setsockopt");
1075 #ifdef IPV6_V6ONLY
1076  if ((sa->sa_family == AF_INET6) &&
1078  IPPROTO_IPV6,
1079  IPV6_V6ONLY,
1080  &on,
1081  sizeof(on))))
1083  "setsockopt");
1084 #endif
1085  if (AF_UNIX == sa->sa_family)
1086  GNUNET_NETWORK_unix_precheck ((struct sockaddr_un *) sa);
1087  if (GNUNET_OK !=
1088  GNUNET_NETWORK_socket_bind (sock, (const struct sockaddr *) sa, addr_len))
1089  {
1090  GNUNET_log (
1092  _ (
1093  "Unable to bind listening socket for service `%s' to address `%s': %s\n"),
1094  sl->name,
1095  GNUNET_a2s (sa, addr_len),
1096  strerror (errno));
1098  GNUNET_free (sa);
1099  return;
1100  }
1101  if ((AF_UNIX == sa->sa_family)
1102 #ifdef __linux__
1103  /* Permission settings are not required when abstract sockets are used */
1104  && ('\0' != ((const struct sockaddr_un *) sa)->sun_path[0])
1105 #endif
1106  )
1107  {
1108  match_uid =
1109  GNUNET_CONFIGURATION_get_value_yesno (cfg, sl->name, "UNIX_MATCH_UID");
1110  match_gid =
1111  GNUNET_CONFIGURATION_get_value_yesno (cfg, sl->name, "UNIX_MATCH_GID");
1112  GNUNET_DISK_fix_permissions (((const struct sockaddr_un *) sa)->sun_path,
1113  match_uid,
1114  match_gid);
1115  }
1116  if (GNUNET_OK != GNUNET_NETWORK_socket_listen (sock, 5))
1117  {
1120  GNUNET_free (sa);
1121  return;
1122  }
1124  _ ("ARM now monitors connections to service `%s' at `%s'\n"),
1125  sl->name,
1126  GNUNET_a2s (sa, addr_len));
1127  sli = GNUNET_new (struct ServiceListeningInfo);
1128  sli->service_addr = sa;
1129  sli->service_addr_len = addr_len;
1130  sli->listen_socket = sock;
1131  sli->sl = sl;
1132  sli->accept_task =
1134  sock,
1136  sli);
1138 }
1139 
1140 
1147 static void
1149 {
1151  GNUNET_CONTAINER_DLL_remove (running_head, running_tail, sl);
1152  GNUNET_assert (NULL == sl->listen_head);
1153  GNUNET_free (sl->config);
1154  GNUNET_free (sl->binary);
1155  GNUNET_free (sl->name);
1156  GNUNET_free (sl);
1157 }
1158 
1159 
1168 static int
1169 check_start (void *cls, const struct GNUNET_ARM_Message *amsg)
1170 {
1171  (void) cls;
1173  return GNUNET_OK;
1174 }
1175 
1176 
1183 static void
1184 handle_start (void *cls, const struct GNUNET_ARM_Message *amsg)
1185 {
1186  struct GNUNET_SERVICE_Client *client = cls;
1187  const char *servicename;
1188  struct ServiceList *sl;
1189  uint64_t request_id;
1190 
1191  request_id = GNUNET_ntohll (amsg->request_id);
1192  servicename = (const char *) &amsg[1];
1194  if (GNUNET_YES == in_shutdown)
1195  {
1196  signal_result (client,
1197  servicename,
1198  request_id,
1200  return;
1201  }
1202  sl = find_service (servicename);
1203  if (NULL == sl)
1204  {
1205  signal_result (client,
1206  servicename,
1207  request_id,
1209  return;
1210  }
1211  sl->force_start = GNUNET_YES;
1212  if (NULL != sl->proc)
1213  {
1214  signal_result (client,
1215  servicename,
1216  request_id,
1218  return;
1219  }
1220  start_process (sl, client, request_id);
1221 }
1222 
1223 
1229 static void
1230 trigger_shutdown (void *cls)
1231 {
1232  (void) cls;
1233  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Triggering shutdown\n");
1235 }
1236 
1237 
1246 static int
1247 check_stop (void *cls, const struct GNUNET_ARM_Message *amsg)
1248 {
1249  (void) cls;
1251  return GNUNET_OK;
1252 }
1253 
1254 
1261 static void
1262 handle_stop (void *cls, const struct GNUNET_ARM_Message *amsg)
1263 {
1264  struct GNUNET_SERVICE_Client *client = cls;
1265  struct ServiceList *sl;
1266  const char *servicename;
1267  uint64_t request_id;
1268 
1269  request_id = GNUNET_ntohll (amsg->request_id);
1270  servicename = (const char *) &amsg[1];
1272  _ ("Preparing to stop `%s'\n"),
1273  servicename);
1275  if (0 == strcasecmp (servicename, "arm"))
1276  {
1277  broadcast_status (servicename, GNUNET_ARM_SERVICE_STOPPING, NULL);
1278  signal_result (client, servicename, request_id, GNUNET_ARM_RESULT_STOPPING);
1281  return;
1282  }
1283  sl = find_service (servicename);
1284  if (NULL == sl)
1285  {
1286  signal_result (client,
1287  servicename,
1288  request_id,
1290  return;
1291  }
1292  sl->force_start = GNUNET_NO;
1293  if (GNUNET_YES == in_shutdown)
1294  {
1295  /* shutdown in progress */
1296  signal_result (client,
1297  servicename,
1298  request_id,
1300  return;
1301  }
1302  if (NULL != sl->killing_client)
1303  {
1304  /* killing already in progress */
1305  signal_result (client,
1306  servicename,
1307  request_id,
1309  return;
1310  }
1311  if (NULL == sl->proc)
1312  {
1313  /* process is down */
1314  signal_result (client,
1315  servicename,
1316  request_id,
1318  return;
1319  }
1321  "Sending kill signal to service `%s', waiting for process to die.\n",
1322  servicename);
1323  broadcast_status (servicename, GNUNET_ARM_SERVICE_STOPPING, NULL);
1324  /* no signal_start - only when it's STOPPED */
1328  sl->killing_client = client;
1329  sl->killing_client_request_id = request_id;
1330 }
1331 
1332 
1344 static int
1345 pool_write (char *pool_start, size_t pool_size, size_t *pool_pos, char *str)
1346 {
1347  size_t next_pos = (*pool_pos) + strlen (str) + 1;
1348 
1349  if (next_pos > pool_size)
1350  return GNUNET_SYSERR;
1351  memcpy (pool_start + *pool_pos, str, strlen (str) + 1);
1352  *pool_pos = next_pos;
1353  return GNUNET_OK;
1354 }
1355 
1356 
1363 static void
1364 handle_list (void *cls, const struct GNUNET_ARM_Message *request)
1365 {
1366  struct GNUNET_SERVICE_Client *client = cls;
1367  struct GNUNET_MQ_Envelope *env;
1369  size_t extra_size;
1370  struct ServiceList *sl;
1371  uint16_t count;
1372  size_t pool_size;
1373  size_t pool_pos;
1374  char *pool_start;
1375  struct GNUNET_ARM_ServiceInfoMessage *ssm;
1376 
1377  GNUNET_break_op (0 == ntohl (request->reserved));
1378  count = 0;
1379  pool_size = 0;
1380 
1381  /* Do one pass over the list to compute the number of services
1382  * and the string pool size */
1383  for (sl = running_head; NULL != sl; sl = sl->next)
1384  {
1385  pool_size += strlen (sl->name) + 1;
1386  pool_size += strlen (sl->binary) + 1;
1387  count++;
1388  }
1389 
1390  extra_size = pool_size + (count * sizeof (struct
1392  env = GNUNET_MQ_msg_extra (msg,
1393  extra_size,
1395  msg->arm_msg.request_id = request->request_id;
1396  msg->count = htons (count);
1397 
1398  ssm = (struct GNUNET_ARM_ServiceInfoMessage *) &msg[1];
1399  pool_start = (char *) (ssm + count);
1400  pool_pos = 0;
1401 
1402  for (sl = running_head; NULL != sl; sl = sl->next)
1403  {
1404  ssm->name_index = htons ((uint16_t) pool_pos);
1405  GNUNET_assert (GNUNET_OK == pool_write (pool_start, pool_size, &pool_pos,
1406  sl->name));
1407  ssm->binary_index = htons ((uint16_t) pool_pos);
1408  GNUNET_assert (GNUNET_OK == pool_write (pool_start, pool_size, &pool_pos,
1409  sl->binary));
1410  if (NULL == sl->proc)
1411  {
1412  if (0 == sl->last_started_at.abs_value_us)
1413  {
1414  /* Process never started */
1416  }
1417  else if (0 == sl->last_exit_status)
1418  {
1420  }
1421  else
1422  {
1424  ssm->last_exit_status = htons (sl->last_exit_status);
1425  }
1426  }
1427  else if ((NULL != sl->killing_client) || (GNUNET_YES == in_shutdown))
1428  {
1430  }
1431  else
1432  {
1434  }
1437  ssm++;
1438  }
1441 }
1442 
1443 
1450 static void
1451 handle_test (void *cls, const struct GNUNET_MessageHeader *message)
1452 {
1453  struct GNUNET_SERVICE_Client *client = cls;
1454  struct GNUNET_MQ_Envelope *env;
1455  struct GNUNET_MessageHeader *msg;
1456 
1457  (void) message;
1461 }
1462 
1463 
1468 static void
1470 {
1471  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Last shutdown phase\n");
1472  if (NULL != notifier)
1473  {
1475  notifier = NULL;
1476  }
1477  if (NULL != service)
1478  {
1479  GNUNET_SERVICE_shutdown (service);
1480  service = NULL;
1481  }
1482  if (NULL != child_death_task)
1483  {
1484  GNUNET_SCHEDULER_cancel (child_death_task);
1485  child_death_task = NULL;
1486  }
1487 }
1488 
1489 
1496 static unsigned int
1497 list_count (struct ServiceList *running_head)
1498 {
1499  struct ServiceList *i;
1500  unsigned int res;
1501 
1502  for (res = 0, i = running_head; NULL != i; i = i->next, res++)
1503  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "%s\n", i->name);
1504  return res;
1505 }
1506 
1507 
1513 static void
1514 shutdown_task (void *cls)
1515 {
1516  struct ServiceList *pos;
1517  struct ServiceList *nxt;
1518  struct ServiceListeningInfo *sli;
1519 
1520  (void) cls;
1521  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "First shutdown phase\n");
1522  if (NULL != child_restart_task)
1523  {
1524  GNUNET_SCHEDULER_cancel (child_restart_task);
1525  child_restart_task = NULL;
1526  }
1528  /* first, stop listening */
1529  for (pos = running_head; NULL != pos; pos = pos->next)
1530  {
1531  while (NULL != (sli = pos->listen_head))
1532  {
1534  if (NULL != sli->accept_task)
1535  {
1537  sli->accept_task = NULL;
1538  }
1541  GNUNET_free (sli->service_addr);
1542  GNUNET_free (sli);
1543  }
1544  }
1545  /* then, shutdown all existing service processes */
1546  nxt = running_head;
1547  while (NULL != (pos = nxt))
1548  {
1549  nxt = pos->next;
1550  if (NULL != pos->proc)
1551  {
1552  GNUNET_log (GNUNET_ERROR_TYPE_INFO, "Stopping service `%s'\n", pos->name);
1554  if (0 != GNUNET_OS_process_kill (pos->proc, GNUNET_TERM_SIG))
1556  }
1557  else
1558  {
1559  free_service (pos);
1560  }
1561  }
1562  /* finally, should all service processes be already gone, terminate for real */
1563  if (NULL == running_head)
1564  do_shutdown ();
1565  else
1567  "Delaying shutdown, have %u childs still running\n",
1568  list_count (running_head));
1569 }
1570 
1571 
1577 static void
1579 
1580 {
1581  struct ServiceList *sl;
1582  struct GNUNET_TIME_Relative lowestRestartDelay;
1583  struct ServiceListeningInfo *sli;
1584 
1585  (void) cls;
1586  child_restart_task = NULL;
1588  lowestRestartDelay = GNUNET_TIME_UNIT_FOREVER_REL;
1589 
1590  /* check for services that need to be restarted due to
1591  * configuration changes or because the last restart failed */
1592  for (sl = running_head; NULL != sl; sl = sl->next)
1593  {
1594  if (NULL != sl->proc)
1595  continue;
1596  /* service is currently not running */
1598  {
1599  /* restart is now allowed */
1600  if (sl->force_start)
1601  {
1602  /* process should run by default, start immediately */
1604  _ ("Restarting service `%s'.\n"),
1605  sl->name);
1606  start_process (sl, NULL, 0);
1607  }
1608  else
1609  {
1610  /* process is run on-demand, ensure it is re-started if there is demand */
1611  for (sli = sl->listen_head; NULL != sli; sli = sli->next)
1612  if (NULL == sli->accept_task)
1613  {
1614  /* accept was actually paused, so start it again */
1615  sli->accept_task =
1617  sli->listen_socket,
1619  sli);
1620  }
1621  }
1622  }
1623  else
1624  {
1625  /* update calculation for earliest time to reactivate a service */
1626  lowestRestartDelay =
1627  GNUNET_TIME_relative_min (lowestRestartDelay,
1629  sl->restart_at));
1630  }
1631  }
1632  if (lowestRestartDelay.rel_value_us !=
1633  GNUNET_TIME_UNIT_FOREVER_REL.rel_value_us)
1634  {
1636  "Will restart process in %s\n",
1637  GNUNET_STRINGS_relative_time_to_string (lowestRestartDelay,
1638  GNUNET_YES));
1639  child_restart_task =
1640  GNUNET_SCHEDULER_add_delayed_with_priority (lowestRestartDelay,
1643  NULL);
1644  }
1645 }
1646 
1647 
1654 static void
1656 {
1657  struct ServiceList *pos;
1658  struct ServiceList *next;
1659  struct ServiceListeningInfo *sli;
1660  const char *statstr;
1661  int statcode;
1662  int ret;
1663  char c[16];
1664  enum GNUNET_OS_ProcessStatusType statusType;
1665  unsigned long statusCode;
1666  const struct GNUNET_DISK_FileHandle *pr;
1667 
1668  (void) cls;
1670  child_death_task = NULL;
1671  /* consume the signal */
1672  GNUNET_break (0 < GNUNET_DISK_file_read (pr, &c, sizeof(c)));
1673 
1674  /* check for services that died (WAITPID) */
1675  next = running_head;
1676  while (NULL != (pos = next))
1677  {
1678  next = pos->next;
1679 
1680  if (NULL == pos->proc)
1681  {
1682  if (GNUNET_YES == in_shutdown)
1683  free_service (pos);
1684  continue;
1685  }
1686 #if HAVE_WAIT4
1687  if (NULL != wait_file)
1688  {
1689  /* need to use 'wait4()' to obtain and log performance data */
1690  struct rusage ru;
1691  int status;
1692  pid_t pid;
1693 
1694  pid = GNUNET_OS_process_get_pid (pos->proc);
1695  ret = wait4 (pid, &status, WNOHANG, &ru);
1696  if (ret <= 0)
1697  continue; /* no process done */
1698  if (WIFEXITED (status))
1699  {
1700  statusType = GNUNET_OS_PROCESS_EXITED;
1701  statusCode = WEXITSTATUS (status);
1702  }
1703  else if (WIFSIGNALED (status))
1704  {
1705  statusType = GNUNET_OS_PROCESS_SIGNALED;
1706  statusCode = WTERMSIG (status);
1707  }
1708  else if (WIFSTOPPED (status))
1709  {
1710  statusType = GNUNET_OS_PROCESS_SIGNALED;
1711  statusCode = WSTOPSIG (status);
1712  }
1713 #ifdef WIFCONTINUED
1714  else if (WIFCONTINUED (status))
1715  {
1716  statusType = GNUNET_OS_PROCESS_RUNNING;
1717  statusCode = 0;
1718  }
1719 #endif
1720  else
1721  {
1722  statusType = GNUNET_OS_PROCESS_UNKNOWN;
1723  statusCode = 0;
1724  }
1725  if ((GNUNET_OS_PROCESS_EXITED == statusType) ||
1726  (GNUNET_OS_PROCESS_SIGNALED == statusType))
1727  {
1728  double utime = ru.ru_utime.tv_sec + (ru.ru_utime.tv_usec / 10e6);
1729  double stime = ru.ru_stime.tv_sec + (ru.ru_stime.tv_usec / 10e6);
1730  fprintf (wait_file,
1731  "%s(%u) %.3f %.3f %llu %llu %llu %llu %llu\n",
1732  pos->binary,
1733  (unsigned int) pid,
1734  utime,
1735  stime,
1736  (unsigned long long) ru.ru_maxrss,
1737  (unsigned long long) ru.ru_inblock,
1738  (unsigned long long) ru.ru_oublock,
1739  (unsigned long long) ru.ru_nvcsw,
1740  (unsigned long long) ru.ru_nivcsw);
1741  }
1742  }
1743  else /* continue with JUST this "if" as "else" (intentionally no brackets!) */
1744 #endif
1745  if ((GNUNET_SYSERR == (ret = GNUNET_OS_process_status (pos->proc,
1746  &statusType,
1747  &statusCode))) ||
1748  (ret == GNUNET_NO) || (statusType == GNUNET_OS_PROCESS_STOPPED) ||
1749  (statusType == GNUNET_OS_PROCESS_UNKNOWN) ||
1750  (statusType == GNUNET_OS_PROCESS_RUNNING))
1751  continue;
1752 
1753  if (statusType == GNUNET_OS_PROCESS_EXITED)
1754  {
1755  statstr = _ (/* process termination method */ "exit");
1756  statcode = statusCode;
1757  }
1758  else if (statusType == GNUNET_OS_PROCESS_SIGNALED)
1759  {
1760  statstr = _ (/* process termination method */ "signal");
1761  statcode = statusCode;
1762  }
1763  else
1764  {
1765  statstr = _ (/* process termination method */ "unknown");
1766  statcode = 0;
1767  }
1768  if (0 != pos->killed_at.abs_value_us)
1769  {
1771  _ ("Service `%s' took %s to terminate\n"),
1772  pos->name,
1775  GNUNET_YES));
1776  }
1778  pos->proc = NULL;
1780  if (NULL != pos->killing_client)
1781  {
1783  pos->name,
1786  pos->killing_client = NULL;
1787  pos->killing_client_request_id = 0;
1788  }
1789  if (GNUNET_YES != in_shutdown)
1790  {
1791  pos->last_exit_status = statcode;
1792  if ((statusType == GNUNET_OS_PROCESS_EXITED) && (statcode == 0))
1793  {
1794  /* process terminated normally, allow restart at any time */
1795  pos->restart_at.abs_value_us = 0;
1796  GNUNET_log (
1798  _ ("Service `%s' terminated normally, will restart at any time\n"),
1799  pos->name);
1800  /* process can still be re-started on-demand, ensure it is re-started if there is demand */
1801  for (sli = pos->listen_head; NULL != sli; sli = sli->next)
1802  {
1803  GNUNET_break (NULL == sli->accept_task);
1804  sli->accept_task =
1806  sli->listen_socket,
1808  sli);
1809  }
1810  }
1811  else
1812  {
1813  GNUNET_log (
1815  _ ("Service `%s' terminated with status %s/%d, will restart in %s\n"),
1816  pos->name,
1817  statstr,
1818  statcode,
1820  {
1821  /* Reduce backoff based on runtime of the process,
1822  so that there is a cool-down if a process actually
1823  runs for a while. */
1824  struct GNUNET_TIME_Relative runtime;
1825  unsigned int minutes;
1826 
1828  minutes =
1829  runtime.rel_value_us / GNUNET_TIME_UNIT_MINUTES.rel_value_us;
1830  if (minutes > 31)
1832  else
1833  pos->backoff.rel_value_us <<= minutes;
1834  }
1835  /* schedule restart */
1837  pos->backoff = GNUNET_TIME_STD_BACKOFF (pos->backoff);
1838  if (NULL != child_restart_task)
1839  GNUNET_SCHEDULER_cancel (child_restart_task);
1840  child_restart_task =
1843  NULL);
1844  }
1845  }
1846  else
1847  {
1848  free_service (pos);
1849  }
1850  }
1851  child_death_task =
1853  pr,
1855  NULL);
1856  if ((NULL == running_head) && (GNUNET_YES == in_shutdown))
1857  do_shutdown ();
1858  else if (GNUNET_YES == in_shutdown)
1860  "Delaying shutdown after child's death, still have %u children\n",
1861  list_count (running_head));
1862 }
1863 
1864 
1869 static void
1871 {
1872  static char c;
1873  int old_errno = errno; /* back-up errno */
1874 
1875  GNUNET_break (
1876  1 ==
1879  &c,
1880  sizeof(c)));
1881  errno = old_errno; /* restore errno */
1882 }
1883 
1884 
1893 static void
1894 setup_service (void *cls, const char *section)
1895 {
1896  struct ServiceList *sl;
1897  char *binary;
1898  char *config;
1899  struct stat sbuf;
1900  struct sockaddr **addrs;
1901  socklen_t *addr_lens;
1902  int ret;
1903 
1904  (void) cls;
1905  if (0 == strcasecmp (section, "arm"))
1906  return;
1907  if (GNUNET_OK !=
1908  GNUNET_CONFIGURATION_get_value_string (cfg, section, "BINARY", &binary))
1909  {
1910  /* not a service section */
1911  return;
1912  }
1913  if ((GNUNET_YES ==
1914  GNUNET_CONFIGURATION_have_value (cfg, section, "RUN_PER_USER")) &&
1915  (GNUNET_YES ==
1916  GNUNET_CONFIGURATION_get_value_yesno (cfg, section, "RUN_PER_USER")))
1917  {
1918  if (GNUNET_NO == start_user)
1919  {
1920  GNUNET_free (binary);
1921  return; /* user service, and we don't deal with those */
1922  }
1923  }
1924  else
1925  {
1926  if (GNUNET_NO == start_system)
1927  {
1928  GNUNET_free (binary);
1929  return; /* system service, and we don't deal with those */
1930  }
1931  }
1932  sl = find_service (section);
1933  if (NULL != sl)
1934  {
1935  /* got the same section twice!? */
1936  GNUNET_break (0);
1937  GNUNET_free (binary);
1938  return;
1939  }
1940  config = NULL;
1942  section,
1943  "CONFIG",
1944  &config)) &&
1946  "PATHS",
1947  "DEFAULTCONFIG",
1948  &config))) ||
1949  (0 != stat (config, &sbuf)))
1950  {
1951  if (NULL != config)
1952  {
1954  section,
1955  "CONFIG",
1956  strerror (errno));
1957  GNUNET_free (config);
1958  config = NULL;
1959  }
1960  }
1961  sl = GNUNET_new (struct ServiceList);
1962  sl->name = GNUNET_strdup (section);
1963  sl->binary = binary;
1964  sl->config = config;
1967  if (GNUNET_CONFIGURATION_have_value (cfg, section, "PIPECONTROL"))
1968  sl->pipe_control =
1969  GNUNET_CONFIGURATION_get_value_yesno (cfg, section, "PIPECONTROL");
1970  GNUNET_CONTAINER_DLL_insert (running_head, running_tail, sl);
1971  if (GNUNET_YES ==
1972  GNUNET_CONFIGURATION_get_value_yesno (cfg, section, "IMMEDIATE_START"))
1973  {
1974  sl->force_start = GNUNET_YES;
1975  if (GNUNET_YES ==
1976  GNUNET_CONFIGURATION_get_value_yesno (cfg, section, "NOARMBIND"))
1977  return;
1978  }
1979  else
1980  {
1981  if (GNUNET_YES !=
1982  GNUNET_CONFIGURATION_get_value_yesno (cfg, section, "START_ON_DEMAND"))
1983  return;
1984  }
1985  if (0 >= (ret = get_server_addresses (section, cfg, &addrs, &addr_lens)))
1986  return;
1987  /* this will free (or capture) addrs[i] */
1988  for (unsigned int i = 0; i < (unsigned int) ret; i++)
1989  create_listen_socket (addrs[i], addr_lens[i], sl);
1990  GNUNET_free (addrs);
1991  GNUNET_free (addr_lens);
1992 }
1993 
1994 
2003 static void *
2005  struct GNUNET_SERVICE_Client *client,
2006  struct GNUNET_MQ_Handle *mq)
2007 {
2008  /* All clients are considered to be of the "monitor" kind
2009  * (that is, they don't affect ARM shutdown).
2010  */
2011  (void) cls;
2012  (void) mq;
2014  return client;
2015 }
2016 
2017 
2025 static void
2027  struct GNUNET_SERVICE_Client *client,
2028  void *app_ctx)
2029 {
2030  (void) cls;
2031  GNUNET_assert (client == app_ctx);
2032  for (struct ServiceList *sl = running_head; NULL != sl; sl = sl->next)
2033  if (sl->killing_client == client)
2034  sl->killing_client = NULL;
2035 }
2036 
2037 
2046 static void
2047 handle_monitor (void *cls, const struct GNUNET_MessageHeader *message)
2048 {
2049  struct GNUNET_SERVICE_Client *client = cls;
2050 
2051  (void) message;
2052  /* FIXME: might want to start by letting monitor know about
2053  services that are already running */
2054  /* Removal is handled by the server implementation, internally. */
2056  GNUNET_SERVICE_client_get_mq (client));
2059 }
2060 
2061 
2069 static void
2070 run (void *cls,
2071  const struct GNUNET_CONFIGURATION_Handle *c,
2072  struct GNUNET_SERVICE_Handle *serv)
2073 {
2074  struct ServiceList *sl;
2075 
2076  (void) cls;
2077  cfg = c;
2078  service = serv;
2080  child_death_task = GNUNET_SCHEDULER_add_read_file (
2084  NULL);
2085 #if HAVE_WAIT4
2086  if (GNUNET_OK ==
2088  "ARM",
2089  "RESOURCE_DIAGNOSTICS",
2090  &wait_filename))
2091  {
2092  wait_file = fopen (wait_filename, "w");
2093  if (NULL == wait_file)
2094  {
2096  "fopen",
2097  wait_filename);
2098  }
2099  }
2100 #endif
2102  "ARM",
2103  "GLOBAL_PREFIX",
2104  &prefix_command))
2106  else
2109  "ARM",
2110  "GLOBAL_POSTFIX",
2111  &final_option))
2112  final_option = GNUNET_strdup ("");
2113  else
2115  start_user =
2116  GNUNET_CONFIGURATION_get_value_yesno (cfg, "ARM", "START_USER_SERVICES");
2117  start_system =
2118  GNUNET_CONFIGURATION_get_value_yesno (cfg, "ARM", "START_SYSTEM_SERVICES");
2119  if ((GNUNET_NO == start_user) && (GNUNET_NO == start_system))
2120  {
2121  GNUNET_log (
2123  "Please configure either START_USER_SERVICES or START_SYSTEM_SERVICES or both.\n");
2125  global_ret = 1;
2126  return;
2127  }
2129 
2130  /* start default services... */
2131  for (sl = running_head; NULL != sl; sl = sl->next)
2132  if (GNUNET_YES == sl->force_start)
2133  start_process (sl, NULL, 0);
2135 }
2136 
2137 
2145 int
2146 main (int argc, char *const *argv)
2147 {
2149  struct GNUNET_MQ_MessageHandler handlers[] = {
2152  struct GNUNET_ARM_Message,
2153  NULL),
2154  GNUNET_MQ_hd_var_size (stop,
2156  struct GNUNET_ARM_Message,
2157  NULL),
2160  struct GNUNET_MessageHeader,
2161  NULL),
2164  struct GNUNET_ARM_Message,
2165  NULL),
2168  struct GNUNET_MessageHeader,
2169  NULL),
2171  };
2172 
2174  GNUNET_assert (NULL != sigpipe);
2175  shc_chld =
2178  if (0 != GNUNET_SERVICE_run_ (argc,
2179  argv,
2180  "arm",
2183  &run,
2186  NULL,
2187  handlers))
2188  global_ret = 2;
2189 #if HAVE_WAIT4
2190  if (NULL != wait_file)
2191  {
2192  fclose (wait_file);
2193  wait_file = NULL;
2194  }
2195  if (NULL != wait_filename)
2196  {
2197  GNUNET_free (wait_filename);
2198  wait_filename = NULL;
2199  }
2200 #endif
2202  shc_chld = NULL;
2203  GNUNET_DISK_pipe_close (sigpipe);
2204  sigpipe = NULL;
2205  return global_ret;
2206 }
2207 
2208 
2209 #if defined(__linux__) && defined(__GLIBC__)
2210 #include <malloc.h>
2211 
2215 void __attribute__ ((constructor))
2216 GNUNET_ARM_memory_init ()
2217 {
2218  mallopt (M_TRIM_THRESHOLD, 4 * 1024);
2219  mallopt (M_TOP_PAD, 1 * 1024);
2220  malloc_trim (0);
2221 }
2222 
2223 
2224 #endif
2225 
2226 
2227 /* end of gnunet-service-arm.c */
#define GNUNET_CONTAINER_DLL_remove(head, tail, element)
Remove an element from a DLL.
int GNUNET_NETWORK_socket_listen(const struct GNUNET_NETWORK_Handle *desc, int backlog)
Listen on a socket.
Definition: network.c:708
static void handle_start(void *cls, const struct GNUNET_ARM_Message *amsg)
Handle START-message.
struct GNUNET_TIME_Absolute last_started_at
Absolute time at which the process was (re-)started last.
int GNUNET_NETWORK_socket_setsockopt(struct GNUNET_NETWORK_Handle *fd, int level, int option_name, const void *option_value, socklen_t option_len)
Set socket option.
Definition: network.c:883
int GNUNET_NETWORK_get_fd(const struct GNUNET_NETWORK_Handle *desc)
Return file descriptor for this network handle.
Definition: network.c:1080
The service has previously failed, and will be restarted.
static struct ServiceList * running_head
List of running services.
ARM stopping was initiated (there&#39;s no "stopped" for ARM itself).
struct GNUNET_OS_Process * GNUNET_OS_start_process_s(enum GNUNET_OS_InheritStdioFlags std_inheritance, const int *lsocks, const char *filename,...)
Start a process.
Definition: os_priority.c:747
No special options, use non-blocking read/write operations.
Service stopping was initiated.
static struct GNUNET_SERVICE_Handle * service
Handle to our service instance.
pid_t GNUNET_OS_process_get_pid(struct GNUNET_OS_Process *proc)
Get the pid of the process in question.
Definition: os_priority.c:274
char * config
Name of the configuration file used.
The notification context is the key datastructure for a convenience API used for transmission of noti...
Definition: nc.c:75
struct GNUNET_MessageHeader * msg
Definition: 005.c:2
static struct GNUNET_VPN_RedirectionRequest * request
Opaque redirection request handle.
Definition: gnunet-vpn.c:41
static char * prefix_command
Command to prepend to each actual command.
#define GNUNET_MESSAGE_TYPE_ARM_STATUS
Status update from ARM.
#define GNUNET_MESSAGE_TYPE_ARM_LIST_RESULT
Response from ARM for listing currently running services.
int GNUNET_CONFIGURATION_get_value_number(const struct GNUNET_CONFIGURATION_Handle *cfg, const char *section, const char *option, unsigned long long *number)
Get a configuration value that should be a number.
uint64_t rel_value_us
The actual value.
#define GNUNET_array_append(arr, len, element)
Append an element to an array (growing the array by one).
The service was started, but then exited normally.
static struct GNUNET_SCHEDULER_Task * child_death_task
ID of task called whenever we get a SIGCHILD.
struct ServiceList * prev
This is a doubly-linked list.
Asked to stop it, but it&#39;s already stopping.
#define GNUNET_CONTAINER_DLL_insert(head, tail, element)
Insert an element at the head of a DLL.
uint64_t request_id
ID of a request that is being replied to.
Definition: arm.h:77
static struct GNUNET_TIME_Relative backoff
How long should we wait to reconnect?
Definition: resolver_api.c:83
struct GNUNET_GETOPT_CommandLineOption options[]
Definition: 002.c:5
void GNUNET_OS_process_destroy(struct GNUNET_OS_Process *proc)
Cleans up process structure contents (OS-dependent) and deallocates it.
Definition: os_priority.c:287
Handle to a service.
Definition: service.c:116
Status update from ARM to client.
Definition: arm.h:41
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_delayed_with_priority(struct GNUNET_TIME_Relative delay, enum GNUNET_SCHEDULER_Priority priority, GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run with a specified delay.
Definition: scheduler.c:1199
#define GNUNET_SIGCHLD
Definition: platform.h:42
struct GNUNET_MQ_Handle * GNUNET_SERVICE_client_get_mq(struct GNUNET_SERVICE_Client *c)
Obtain the message queue of c.
Definition: service.c:2438
ssize_t GNUNET_DISK_file_read(const struct GNUNET_DISK_FileHandle *h, void *result, size_t len)
Read the contents of a binary file into a buffer.
Definition: disk.c:732
int GNUNET_OS_process_status(struct GNUNET_OS_Process *proc, enum GNUNET_OS_ProcessStatusType *type, unsigned long *code)
Retrieve the status of a process.
Definition: os_priority.c:946
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_shutdown(GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run on shutdown, that is when a CTRL-C signal is received, or when GNUNET_SCHEDULER_shutdown() is being invoked.
Definition: scheduler.c:1331
#define GNUNET_TIME_UNIT_MINUTES
One minute.
struct ServiceListeningInfo * prev
This is a linked list.
static int start
Set if we are to start default services (including ARM).
Definition: gnunet-arm.c:39
Do not trigger server shutdown on signal at all; instead, allow for the user to terminate the server ...
#define GNUNET_MESSAGE_TYPE_ARM_RESULT
Response from ARM.
struct GNUNET_TIME_Absolute GNUNET_TIME_relative_to_absolute(struct GNUNET_TIME_Relative rel)
Convert relative time to an absolute time in the future.
Definition: time.c:246
char * GNUNET_CONFIGURATION_expand_dollar(const struct GNUNET_CONFIGURATION_Handle *cfg, char *orig)
Expand an expression of the form "$FOO/BAR" to "DIRECTORY/BAR" where either in the "PATHS" section or...
struct GNUNET_TIME_Relative backoff
Process exponential backoff time.
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
static void client_disconnect_cb(void *cls, struct GNUNET_SERVICE_Client *client, void *app_ctx)
A client disconnected, clean up associated state.
struct ServiceListeningInfo * listen_head
Linked list of listen sockets associated with this service.
#define GNUNET_MESSAGE_TYPE_ARM_START
Request to ARM to start a service.
#define GNUNET_MESSAGE_TYPE_ARM_STOP
Request to ARM to stop a service.
struct GNUNET_ARM_Message arm_msg
Reply to client, of type is GNUNET_MESSAGE_TYPE_ARM_LIST_RESULT, with an ID.
Definition: arm.h:150
int GNUNET_NETWORK_socket_bind(struct GNUNET_NETWORK_Handle *desc, const struct sockaddr *address, socklen_t address_len)
Bind a socket to a particular address.
Definition: network.c:485
int main(int argc, char *const *argv)
The main function for the arm service.
#define GNUNET_memcpy(dst, src, n)
Call memcpy() but check for n being 0 first.
#define GNUNET_MQ_hd_fixed_size(name, code, str, ctx)
static void handle_test(void *cls, const struct GNUNET_MessageHeader *message)
Handle TEST-message by sending back TEST.
static unsigned int list_count(struct ServiceList *running_head)
Count how many services are still active.
static int ret
Return value of the commandline.
Definition: gnunet-abd.c:81
#define GNUNET_MQ_msg(mvar, type)
Allocate a GNUNET_MQ_Envelope.
Definition: gnunet_mq_lib.h:67
int GNUNET_DISK_directory_create_for_file(const char *filename)
Create the directory structure for storing a file.
Definition: disk.c:684
static void maint_child_death(void *cls)
Task triggered whenever we receive a SIGCHLD (child process died).
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_read_file(struct GNUNET_TIME_Relative delay, const struct GNUNET_DISK_FileHandle *rfd, GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run with a specified delay or when the specified file descriptor is ready f...
Definition: scheduler.c:1667
void GNUNET_SIGNAL_handler_uninstall(struct GNUNET_SIGNAL_Context *ctx)
Uninstall a previously installed signal hander.
Definition: signal.c:77
struct GNUNET_TIME_Absolute restart_at
Absolute time at which the process is scheduled to restart in case of death.
socklen_t service_addr_len
Number of bytes in service_addr.
#define GNUNET_new(type)
Allocate a struct or union of the given type.
GNUNET_ARM_Result
Replies to ARM requests.
int pipe_control
Should we use pipes to signal this process? (YES for Java binaries and if we are on Windoze)...
void GNUNET_log_config_invalid(enum GNUNET_ErrorType kind, const char *section, const char *option, const char *required)
Log error message about invalid configuration option value.
#define LOG(kind,...)
Asked to start it, but it&#39;s already started.
static void create_listen_socket(struct sockaddr *sa, socklen_t addr_len, struct ServiceList *sl)
Creating a listening socket for each of the service&#39;s addresses and wait for the first incoming conne...
void GNUNET_SCHEDULER_shutdown(void)
Request the shutdown of a scheduler.
Definition: scheduler.c:531
uint32_t reserved
For alignment.
Definition: arm.h:70
#define GNUNET_strdup(a)
Wrapper around GNUNET_xstrdup_.
void GNUNET_notification_context_add(struct GNUNET_NotificationContext *nc, struct GNUNET_MQ_Handle *mq)
Add a subscriber to the notification context.
Definition: nc.c:160
uint64_t abs_value_us
The actual value.
uint16_t count
Number of &#39;struct GNUNET_ARM_ServiceInfoMessage&#39; that are at the end of this message.
Definition: arm.h:156
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur...
const struct GNUNET_DISK_FileHandle * GNUNET_DISK_pipe_handle(const struct GNUNET_DISK_PipeHandle *p, enum GNUNET_DISK_PipeEnd n)
Get the handle to a particular pipe end.
Definition: disk.c:1672
The service was started, and we&#39;re currently waiting for it to be stopped.
struct ServiceList * sl
Service this listen socket is for.
static int start_user
Are we starting user services?
#define GNUNET_TIME_UNIT_FOREVER_ABS
Constant used to specify "forever".
struct GNUNET_SCHEDULER_Task * accept_task
Task doing the accepting.
#define _(String)
GNU gettext support macro.
Definition: platform.h:184
static char * section
Name of the section.
Definition: gnunet-config.c:33
struct ServiceList * next
This is a doubly-linked list.
Handle to a client that is connected to a service.
Definition: service.c:250
static void signal_result(struct GNUNET_SERVICE_Client *client, const char *name, uint64_t request_id, enum GNUNET_ARM_Result result)
Signal our client that we will start or stop the service.
static struct ServiceList * find_service(const char *name)
Find the process with the given service name in the given list and return it.
uint64_t killing_client_request_id
ID of the request that killed the service (for reporting back).
static void run(void *cls, const struct GNUNET_CONFIGURATION_Handle *c, struct GNUNET_SERVICE_Handle *serv)
Process arm requests.
#define GNUNET_log_strerror(level, cmd)
Log an error message at log-level &#39;level&#39; that indicates a failure of the command &#39;cmd&#39; with the mess...
List of our services.
int last_exit_status
Last exit status of the process.
#define GNUNET_MQ_msg_extra(mvar, esize, type)
Allocate an envelope, with extra space allocated after the space needed by the message struct...
Definition: gnunet_mq_lib.h:52
static void sighandler_child_death()
Signal handler called for SIGCHLD.
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_with_priority(enum GNUNET_SCHEDULER_Priority prio, GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run with a specified priority.
Definition: scheduler.c:1223
#define GNUNET_MQ_check_zero_termination(m)
Insert code for a "check_" function that verifies that a given variable-length message received over ...
#define GNUNET_array_grow(arr, size, tsize)
Grow a well-typed (!) array.
static void handle_stop(void *cls, const struct GNUNET_ARM_Message *amsg)
Handle STOP-message.
struct GNUNET_ARM_Message arm_msg
Reply to client, of type is GNUNET_MESSAGE_TYPE_ARM_RESULT, with an ID.
Definition: arm.h:91
Tried to start a service, but that failed for some reason.
Service starting was initiated.
uint32_t result
Result from the enum GNUNET_ARM_Result
Definition: arm.h:96
#define GNUNET_log_strerror_file(level, cmd, filename)
Log an error message at log-level &#39;level&#39; that indicates a failure of the command &#39;cmd&#39; with the mess...
#define GNUNET_MQ_hd_var_size(name, code, str, ctx)
#define GNUNET_break_op(cond)
Use this for assertion violations caused by other peers (i.e.
ssize_t GNUNET_DISK_file_write(const struct GNUNET_DISK_FileHandle *h, const void *buffer, size_t n)
Write a buffer to a file.
Definition: disk.c:820
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_now(GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run as soon as possible.
Definition: scheduler.c:1296
GNUNET_OS_ProcessStatusType
Process status types.
int GNUNET_CONFIGURATION_have_value(const struct GNUNET_CONFIGURATION_Handle *cfg, const char *section, const char *option)
Test if we have a value for a particular option.
const char * GNUNET_STRINGS_relative_time_to_string(struct GNUNET_TIME_Relative delta, int do_round)
Give relative time in human-readable fancy format.
Definition: strings.c:702
static char * service_name
Option -s: service name (hash to get service descriptor)
Definition: gnunet-vpn.c:51
uint16_t status
See PRISM_STATUS_*-constants.
#define GNUNET_new_array(n, type)
Allocate a size n array with structs or unions of the given type.
#define MAX_NOTIFY_QUEUE
How many messages do we queue up at most for optional notifications to a client? (this can cause noti...
static const struct GNUNET_CONFIGURATION_Handle * config
static int result
Global testing status.
#define GNUNET_TIME_UNIT_FOREVER_REL
Constant used to specify "forever".
The writing-end of a pipe.
Record with information about a listen socket we have open.
const char * GNUNET_a2s(const struct sockaddr *addr, socklen_t addrlen)
Convert a "struct sockaddr*" (IPv4 or IPv6 address) to a string (for printing debug messages)...
The reading-end of a pipe.
static struct ServiceList * running_tail
List of running services.
void GNUNET_SERVICE_client_mark_monitor(struct GNUNET_SERVICE_Client *c)
Set the &#39;monitor&#39; flag on this client.
Definition: service.c:2408
The process exited with a return code.
static void delayed_restart_task(void *cls)
Task run whenever it is time to restart a child that died.
#define GNUNET_TIME_UNIT_MILLISECONDS
One millisecond.
static void trigger_shutdown(void *cls)
Start a shutdown sequence.
Message handler for a specific message type.
static int res
struct GNUNET_TIME_Absolute GNUNET_TIME_absolute_get(void)
Get the current time.
Definition: time.c:118
When these flags are set, the child process will inherit stdout and stderr of the parent...
Definition: gnunet_os_lib.h:97
Asked to start something, but ARM is shutting down and can&#39;t comply.
struct GNUNET_DISK_PipeHandle * GNUNET_DISK_pipe(enum GNUNET_DISK_PipeFlags pf)
Creates an interprocess channel.
Definition: disk.c:1456
Run when otherwise idle.
int int GNUNET_asprintf(char **buf, const char *format,...) __attribute__((format(printf
Like asprintf, just portable.
int GNUNET_CONFIGURATION_get_value_string(const struct GNUNET_CONFIGURATION_Handle *cfg, const char *section, const char *option, char **value)
Get a configuration value that should be a string.
static struct GNUNET_DISK_PipeHandle * sigpipe
Pipe used to communicate shutdown via signal.
void GNUNET_MQ_discard(struct GNUNET_MQ_Envelope *mqm)
Discard the message queue message, free all allocated resources.
Definition: mq.c:323
static int get_server_addresses(const char *service_name, const struct GNUNET_CONFIGURATION_Handle *cfg, struct sockaddr ***addrs, socklen_t **addr_lens)
Get the list of addresses that a server for the given service should bind to.
static void shutdown_task(void *cls)
Task run for shutdown.
uint64_t GNUNET_htonll(uint64_t n)
Convert unsigned 64-bit integer to network byte order.
Definition: common_endian.c:36
struct GNUNET_SIGNAL_Context * GNUNET_SIGNAL_handler_install(int signal, GNUNET_SIGNAL_Handler handler)
Install a signal handler that will be run if the given signal is received.
Definition: signal.c:51
Instead of listening on lsocks passed by the parent, close them after opening our own listen socket(s...
uint16_t name_index
String pool index for the service&#39;s name.
Definition: arm.h:104
int force_start
Is this service to be started by default (or did a client tell us explicitly to start it)...
Service was stopped.
struct GNUNET_TIME_Relative GNUNET_TIME_relative_min(struct GNUNET_TIME_Relative t1, struct GNUNET_TIME_Relative t2)
Return the minimum of two relative time values.
Definition: time.c:272
static void handle_list(void *cls, const struct GNUNET_ARM_Message *request)
Handle LIST-message.
Service has been started and is currently running.
Service starting was initiated.
#define GNUNET_MESSAGE_TYPE_ARM_LIST
Request to ARM to list all currently running services.
int16_t last_exit_status
Last process exit status.
Definition: arm.h:114
static int check_stop(void *cls, const struct GNUNET_ARM_Message *amsg)
Check STOP-message.
struct GNUNET_MQ_Envelope * env
Definition: 005.c:1
Reply from ARM to client for the GNUNET_MESSAGE_TYPE_ARM_LIST request followed by count &#39;\0&#39; terminat...
Definition: arm.h:144
static void unicast(struct TransportClient *tc, const struct GNUNET_MessageHeader *msg, int may_drop)
Queue the given message for transmission to the given client.
static void handle_monitor(void *cls, const struct GNUNET_MessageHeader *message)
Handle MONITOR-message.
#define GNUNET_TIME_STD_BACKOFF(r)
Perform our standard exponential back-off calculation, starting at 1 ms and then going by a factor of...
static const struct GNUNET_CONFIGURATION_Handle * cfg
Our configuration.
static void start_process(struct ServiceList *sl, struct GNUNET_SERVICE_Client *client, uint64_t request_id)
Actually start the process for the given service.
The process was killed by a signal.
static void free_service(struct ServiceList *sl)
Remove and free an entry in the service list.
static struct GNUNET_NETWORK_Handle * ls
Listen socket for STUN processing.
Definition: gnunet-nat.c:85
#define GNUNET_TIME_UNIT_ZERO
Relative time zero.
static char * final_option
Option to append to each actual command.
Asked to stop it, but it&#39;s already stopped.
struct GNUNET_NotificationContext * GNUNET_notification_context_create(unsigned int queue_length)
Create a new notification context.
Definition: nc.c:121
Handle to a message queue.
Definition: mq.c:85
int GNUNET_DISK_pipe_close(struct GNUNET_DISK_PipeHandle *p)
Closes an interprocess channel.
Definition: disk.c:1634
uint32_t status
Status from the &#39;enum GNUNET_ARM_ServiceStatus&#39;.
Definition: arm.h:51
struct GNUNET_OS_Process * proc
Process structure pointer of the child.
void GNUNET_notification_context_broadcast(struct GNUNET_NotificationContext *nc, const struct GNUNET_MessageHeader *msg, int can_drop)
Send a message to all subscribers of this context.
Definition: nc.c:189
enum RadiotapType __attribute__
#define GNUNET_MESSAGE_TYPE_ARM_TEST
Test if ARM service is online.
Reply from ARM to client.
Definition: arm.h:86
#define GNUNET_MESSAGE_TYPE_ARM_MONITOR
Request to ARM to notify client of service status changes.
struct GNUNET_TIME_AbsoluteNBO last_started_at
Time when the sevice was first started, if applicable.
Definition: arm.h:135
static char * hostname
Our hostname; we give this to all the peers we start.
static int monitor
Monitor ARM activity.
Definition: gnunet-arm.c:64
char * binary
Name of the binary used.
int GNUNET_SERVICE_run_(int argc, char *const *argv, const char *service_name, enum GNUNET_SERVICE_Options options, GNUNET_SERVICE_InitCallback service_init_cb, GNUNET_SERVICE_ConnectHandler connect_cb, GNUNET_SERVICE_DisconnectHandler disconnect_cb, void *cls, const struct GNUNET_MQ_MessageHandler *handlers)
Creates the "main" function for a GNUnet service.
Definition: service.c:1963
static uint16_t port
Port number.
Definition: gnunet-bcd.c:82
configuration data
Definition: configuration.c:84
const char * name
struct GNUNET_TIME_Relative GNUNET_TIME_absolute_get_duration(struct GNUNET_TIME_Absolute whence)
Get the duration of an operation as the difference of the current time and the given start time "henc...
Definition: time.c:375
struct GNUNET_NETWORK_Handle * listen_socket
Our listening socket.
#define LOG_STRERROR(kind, syscall)
void GNUNET_CONFIGURATION_iterate_sections(const struct GNUNET_CONFIGURATION_Handle *cfg, GNUNET_CONFIGURATION_Section_Iterator iter, void *iter_cls)
Iterate over all sections in the configuration.
struct GNUNET_MQ_Handle * mq
Definition: 003.c:5
#define GNUNET_log(kind,...)
Entry in list of pending tasks.
Definition: scheduler.c:134
The process is still running.
uint32_t status
Status from the &#39;enum GNUNET_ARM_ServiceStatus&#39;.
Definition: arm.h:124
Asked to start or stop a service, but it&#39;s not known.
int GNUNET_CONFIGURATION_get_value_filename(const struct GNUNET_CONFIGURATION_Handle *cfg, const char *section, const char *option, char **value)
Get a configuration value that should be the name of a file or directory.
char * GNUNET_OS_get_libexec_binary_path(const char *progname)
Given the name of a gnunet-helper, gnunet-service or gnunet-daemon binary, try to prefix it with the ...
void GNUNET_DISK_fix_permissions(const char *fn, int require_uid_match, int require_gid_match)
Update POSIX permissions mask of a file on disk.
Definition: disk.c:379
static int in_shutdown
Are we in shutdown mode?
handle to a socket
Definition: network.c:52
The process is not known to the OS (or at least not one of our children).
static struct GNUNET_SCHEDULER_Task * child_restart_task
ID of task called whenever the timeout for restarting a child expires.
GNUNET_ARM_ServiceMonitorStatus
Statuses of services.
struct GNUNET_TIME_Relative GNUNET_TIME_absolute_get_remaining(struct GNUNET_TIME_Absolute future)
Given a timestamp in the future, how much time remains until then?
Definition: time.c:331
char * GNUNET_NETWORK_shorten_unixpath(char *unixpath)
Given a unixpath that is too long (larger than UNIX_PATH_MAX), shorten it to an acceptable length whi...
Definition: network.c:158
static struct GNUNET_SIGNAL_Context * shc_chld
Child signal handler.
Definition: gnunet-qr.c:64
static struct GNUNET_NotificationContext * notifier
Context for notifications we need to send to our clients.
Header for all communications.
Time for absolute times used by GNUnet, in microseconds.
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_read_net(struct GNUNET_TIME_Relative delay, struct GNUNET_NETWORK_Handle *rfd, GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run with a specified delay or when the specified file descriptor is ready f...
Definition: scheduler.c:1517
void GNUNET_notification_context_destroy(struct GNUNET_NotificationContext *nc)
Destroy the context, force disconnect for all subscribers.
Definition: nc.c:137
void GNUNET_MQ_send(struct GNUNET_MQ_Handle *mq, struct GNUNET_MQ_Envelope *ev)
Send a message with the given message queue.
Definition: mq.c:355
void GNUNET_NETWORK_unix_precheck(const struct sockaddr_un *un)
If services crash, they can leave a unix domain socket file on the disk.
Definition: network.c:202
char * name
Name of the service.
struct ServiceListeningInfo * next
This is a linked list.
static void * client_connect_cb(void *cls, struct GNUNET_SERVICE_Client *client, struct GNUNET_MQ_Handle *mq)
A client connected, mark as a monitoring client.
static int check_start(void *cls, const struct GNUNET_ARM_Message *amsg)
Check START-message.
struct GNUNET_TIME_Absolute killed_at
Time we asked the service to shut down (used to calculate time it took the service to terminate)...
int GNUNET_CONFIGURATION_get_value_choice(const struct GNUNET_CONFIGURATION_Handle *cfg, const char *section, const char *option, const char *const *choices, const char **value)
Get a configuration value that should be in a set of predefined strings.
static struct GNUNET_PeerIdentity pid
Identity of the peer we transmit to / connect to.
#define GNUNET_TERM_SIG
The termination signal.
Definition: platform.h:246
struct ServiceListeningInfo * listen_tail
Linked list of listen sockets associated with this service.
int GNUNET_CONFIGURATION_get_value_yesno(const struct GNUNET_CONFIGURATION_Handle *cfg, const char *section, const char *option)
Get a configuration value that should be in a set of "YES" or "NO".
Service was stopped (never sent for ARM itself).
static void add_unixpath(struct sockaddr **saddrs, socklen_t *saddrlens, const char *unixpath, int abstract)
Add the given UNIX domain path as an address to the list (as the first entry).
struct GNUNET_TIME_AbsoluteNBO GNUNET_TIME_absolute_hton(struct GNUNET_TIME_Absolute a)
Convert absolute time to network byte order.
Definition: time.c:657
size_t GNUNET_strlcpy(char *dst, const char *src, size_t n)
Like strlcpy but portable.
Definition: strings.c:221
Should a pipe be used to send signals to the child?
Handle used to access files (and pipes).
Handle used to manage a pipe.
Definition: disk.c:68
struct GNUNET_SERVICE_Client * killing_client
Client to notify upon kill completion (waitpid), NULL if we should simply restart the process...
void GNUNET_SERVICE_client_continue(struct GNUNET_SERVICE_Client *c)
Continue receiving further messages from the given client.
Definition: service.c:2244
static int global_ret
Return value from main.
int GNUNET_NETWORK_socket_close(struct GNUNET_NETWORK_Handle *desc)
Close a socket.
Definition: network.c:560
struct GNUNET_TIME_AbsoluteNBO restart_at
Time when the sevice will be restarted, if applicable to the current status.
Definition: arm.h:130
#define GNUNET_MQ_handler_end()
End-marker for the handlers array.
static int list
Set if we should print a list of currently running services.
Definition: gnunet-arm.c:69
uint16_t binary_index
String pool index for the service&#39;s binary.
Definition: arm.h:109
#define GNUNET_malloc(size)
Wrapper around malloc.
static int pool_write(char *pool_start, size_t pool_size, size_t *pool_pos, char *str)
Write a string to a string pool.
The process is paused (but could be resumed).
uint64_t GNUNET_ntohll(uint64_t n)
Convert unsigned 64-bit integer to host byte order.
Definition: common_endian.c:53
static void do_shutdown()
We are done with everything.
void GNUNET_SERVICE_client_persist(struct GNUNET_SERVICE_Client *c)
Set the persist option on this client.
Definition: service.c:2425
#define GNUNET_free(ptr)
Wrapper around free.
static void setup_service(void *cls, const char *section)
Setup our service record for the given section in the configuration file (assuming the section is for...
static void broadcast_status(const char *name, enum GNUNET_ARM_ServiceMonitorStatus status, struct GNUNET_SERVICE_Client *unicast)
Tell all clients about status change of a service.
Time for relative time used by GNUnet, in microseconds.
void GNUNET_SERVICE_shutdown(struct GNUNET_SERVICE_Handle *sh)
Explicitly stops the service.
Definition: service.c:2384
struct GNUNET_NETWORK_Handle * GNUNET_NETWORK_socket_create(int domain, int type, int protocol)
Create a new socket.
Definition: network.c:912
int GNUNET_OS_process_kill(struct GNUNET_OS_Process *proc, int sig)
Sends a signal to the process.
Definition: os_priority.c:225
struct sockaddr * service_addr
Address this socket is listening on.
static int start_system
Are we starting system services?
static void accept_connection(void *cls)
First connection has come to the listening socket associated with the service, create the service in ...
void * GNUNET_SCHEDULER_cancel(struct GNUNET_SCHEDULER_Task *task)
Cancel the task with the specified identifier.
Definition: scheduler.c:972