4 * This module handles shared rooms, inter-Citadel mail, and outbound
5 * mailing list processing.
7 * Copyright (c) 2000-2009 by the citadel.org team
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 3 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 * ** NOTE ** A word on the S_NETCONFIGS semaphore:
24 * This is a fairly high-level type of critical section. It ensures that no
25 * two threads work on the netconfigs files at the same time. Since we do
26 * so many things inside these, here are the rules:
27 * 1. begin_critical_section(S_NETCONFIGS) *before* begin_ any others.
28 * 2. Do *not* perform any I/O with the client during these sections.
33 * Duration of time (in seconds) after which pending list subscribe/unsubscribe
34 * requests that have not been confirmed will be deleted.
36 #define EXP 259200 /* three days */
48 #include <sys/types.h>
50 #if TIME_WITH_SYS_TIME
51 # include <sys/time.h>
55 # include <sys/time.h>
64 #include <libcitadel.h>
67 #include "citserver.h"
74 #include "internet_addressing.h"
75 #include "serv_network.h"
76 #include "clientsocket.h"
78 #include "citadel_dirs.h"
86 #include "ctdl_module.h"
90 /* Nonzero while we are doing network processing */
91 static int doing_queue = 0;
94 * When we do network processing, it's accomplished in two passes; one to
95 * gather a list of rooms and one to actually do them. It's ok that rplist
96 * is global; we have a mutex that keeps it safe.
98 struct RoomProcList *rplist = NULL;
101 * We build a map of network nodes during processing.
103 NetMap *the_netmap = NULL;
104 int netmap_changed = 0;
105 char *working_ignetcfg = NULL;
108 * Load or refresh the Citadel network (IGnet) configuration for this node.
110 void load_working_ignetcfg(void) {
114 cfg = CtdlGetSysConfig(IGNETCFG);
119 oldcfg = working_ignetcfg;
120 working_ignetcfg = cfg;
121 if (oldcfg != NULL) {
131 * Keep track of what messages to reject
133 FilterList *load_filter_list(void) {
134 char *serialized_list = NULL;
137 FilterList *newlist = NULL;
140 serialized_list = CtdlGetSysConfig(FILTERLIST);
141 if (serialized_list == NULL) return(NULL); /* if null, no entries */
143 /* Use the string tokenizer to grab one line at a time */
144 for (i=0; i<num_tokens(serialized_list, '\n'); ++i) {
145 extract_token(buf, serialized_list, i, '\n', sizeof buf);
146 nptr = (FilterList *) malloc(sizeof(FilterList));
147 extract_token(nptr->fl_user, buf, 0, '|', sizeof nptr->fl_user);
148 striplt(nptr->fl_user);
149 extract_token(nptr->fl_room, buf, 1, '|', sizeof nptr->fl_room);
150 striplt(nptr->fl_room);
151 extract_token(nptr->fl_node, buf, 2, '|', sizeof nptr->fl_node);
152 striplt(nptr->fl_node);
154 /* Cowardly refuse to add an any/any/any entry that would
155 * end up filtering every single message.
157 if (IsEmptyStr(nptr->fl_user) &&
158 IsEmptyStr(nptr->fl_room) &&
159 IsEmptyStr(nptr->fl_node)) {
163 nptr->next = newlist;
168 free(serialized_list);
173 void free_filter_list(FilterList *fl) {
174 if (fl == NULL) return;
175 free_filter_list(fl->next);
182 * Check the use table. This is a list of messages which have recently
183 * arrived on the system. It is maintained and queried to prevent the same
184 * message from being entered into the database multiple times if it happens
185 * to arrive multiple times by accident.
187 int network_usetable(struct CtdlMessage *msg) {
190 struct cdbdata *cdbut;
193 /* Bail out if we can't generate a message ID */
197 if (msg->cm_fields['I'] == NULL) {
200 if (IsEmptyStr(msg->cm_fields['I'])) {
204 /* Generate the message ID */
205 strcpy(msgid, msg->cm_fields['I']);
206 if (haschar(msgid, '@') == 0) {
208 if (msg->cm_fields['N'] != NULL) {
209 strcat(msgid, msg->cm_fields['N']);
216 cdbut = cdb_fetch(CDB_USETABLE, msgid, strlen(msgid));
222 /* If we got to this point, it's unique: add it. */
223 strcpy(ut.ut_msgid, msgid);
224 ut.ut_timestamp = time(NULL);
225 cdb_store(CDB_USETABLE, msgid, strlen(msgid),
226 &ut, sizeof(struct UseTable) );
232 * Read the network map from its configuration file into memory.
234 void read_network_map(void) {
235 char *serialized_map = NULL;
240 serialized_map = CtdlGetSysConfig(IGNETMAP);
241 if (serialized_map == NULL) return; /* if null, no entries */
243 /* Use the string tokenizer to grab one line at a time */
244 for (i=0; i<num_tokens(serialized_map, '\n'); ++i) {
245 extract_token(buf, serialized_map, i, '\n', sizeof buf);
246 nmptr = (NetMap *) malloc(sizeof(NetMap));
247 extract_token(nmptr->nodename, buf, 0, '|', sizeof nmptr->nodename);
248 nmptr->lastcontact = extract_long(buf, 1);
249 extract_token(nmptr->nexthop, buf, 2, '|', sizeof nmptr->nexthop);
250 nmptr->next = the_netmap;
254 free(serialized_map);
260 * Write the network map from memory back to the configuration file.
262 void write_network_map(void) {
263 char *serialized_map = NULL;
267 if (netmap_changed) {
268 serialized_map = strdup("");
270 if (the_netmap != NULL) {
271 for (nmptr = the_netmap; nmptr != NULL; nmptr = nmptr->next) {
272 serialized_map = realloc(serialized_map,
273 (strlen(serialized_map)+SIZ) );
274 if (!IsEmptyStr(nmptr->nodename)) {
275 snprintf(&serialized_map[strlen(serialized_map)],
279 (long)nmptr->lastcontact,
285 CtdlPutSysConfig(IGNETMAP, serialized_map);
286 free(serialized_map);
289 /* Now free the list */
290 while (the_netmap != NULL) {
291 nmptr = the_netmap->next;
301 * Check the network map and determine whether the supplied node name is
302 * valid. If it is not a neighbor node, supply the name of a neighbor node
303 * which is the next hop. If it *is* a neighbor node, we also fill in the
306 int is_valid_node(char *nexthop, char *secret, char *node) {
318 * First try the neighbor nodes
320 if (working_ignetcfg == NULL) {
321 CtdlLogPrintf(CTDL_ERR, "working_ignetcfg is NULL!\n");
322 if (nexthop != NULL) {
329 if (nexthop != NULL) {
333 /* Use the string tokenizer to grab one line at a time */
334 for (i=0; i<num_tokens(working_ignetcfg, '\n'); ++i) {
335 extract_token(linebuf, working_ignetcfg, i, '\n', sizeof linebuf);
336 extract_token(buf, linebuf, 0, '|', sizeof buf);
337 if (!strcasecmp(buf, node)) {
338 if (nexthop != NULL) {
341 if (secret != NULL) {
342 extract_token(secret, linebuf, 1, '|', 256);
349 return(retval); /* yup, it's a direct neighbor */
353 * If we get to this point we have to see if we know the next hop
355 if (the_netmap != NULL) {
356 for (nmptr = the_netmap; nmptr != NULL; nmptr = nmptr->next) {
357 if (!strcasecmp(nmptr->nodename, node)) {
358 if (nexthop != NULL) {
359 strcpy(nexthop, nmptr->nexthop);
367 * If we get to this point, the supplied node name is bogus.
369 CtdlLogPrintf(CTDL_ERR, "Invalid node name <%s>\n", node);
377 void cmd_gnet(char *argbuf) {
378 char filename[PATH_MAX];
382 if ( (CC->room.QRflags & QR_MAILBOX) && (CC->user.usernum == atol(CC->room.QRname)) ) {
383 /* users can edit the netconfigs for their own mailbox rooms */
385 else if (CtdlAccessCheck(ac_room_aide)) return;
387 assoc_file_name(filename, sizeof filename, &CC->room, ctdl_netcfg_dir);
388 cprintf("%d Network settings for room #%ld <%s>\n",
390 CC->room.QRnumber, CC->room.QRname);
392 fp = fopen(filename, "r");
394 while (fgets(buf, sizeof buf, fp) != NULL) {
395 buf[strlen(buf)-1] = 0;
396 cprintf("%s\n", buf);
405 void cmd_snet(char *argbuf) {
406 char tempfilename[PATH_MAX];
407 char filename[PATH_MAX];
413 if ( (CC->room.QRflags & QR_MAILBOX) && (CC->user.usernum == atol(CC->room.QRname)) ) {
414 /* users can edit the netconfigs for their own mailbox rooms */
416 else if (CtdlAccessCheck(ac_room_aide)) return;
418 CtdlMakeTempFileName(tempfilename, sizeof tempfilename);
419 assoc_file_name(filename, sizeof filename, &CC->room, ctdl_netcfg_dir);
421 fp = fopen(tempfilename, "w");
423 cprintf("%d Cannot open %s: %s\n",
424 ERROR + INTERNAL_ERROR,
429 cprintf("%d %s\n", SEND_LISTING, tempfilename);
430 while (client_getln(buf, sizeof buf) >= 0 && strcmp(buf, "000")) {
431 fprintf(fp, "%s\n", buf);
435 /* Now copy the temp file to its permanent location.
436 * (We copy instead of link because they may be on different filesystems)
438 begin_critical_section(S_NETCONFIGS);
439 fp = fopen(tempfilename, "r");
441 newfp = fopen(filename, "w");
443 while (fgets(buf, sizeof buf, fp) != NULL) {
444 fprintf(newfp, "%s", buf);
450 end_critical_section(S_NETCONFIGS);
451 unlink(tempfilename);
456 * Deliver digest messages
458 void network_deliver_digest(SpoolControl *sc) {
461 struct CtdlMessage *msg = NULL;
464 size_t recps_len = SIZ;
465 struct recptypes *valid;
469 if (sc->num_msgs_spooled < 1) {
470 fclose(sc->digestfp);
475 msg = malloc(sizeof(struct CtdlMessage));
476 memset(msg, 0, sizeof(struct CtdlMessage));
477 msg->cm_magic = CTDLMESSAGE_MAGIC;
478 msg->cm_format_type = FMT_RFC822;
479 msg->cm_anon_type = MES_NORMAL;
481 sprintf(buf, "%ld", time(NULL));
482 msg->cm_fields['T'] = strdup(buf);
483 msg->cm_fields['A'] = strdup(CC->room.QRname);
484 snprintf(buf, sizeof buf, "[%s]", CC->room.QRname);
485 msg->cm_fields['U'] = strdup(buf);
486 sprintf(buf, "room_%s@%s", CC->room.QRname, config.c_fqdn);
487 for (i=0; buf[i]; ++i) {
488 if (isspace(buf[i])) buf[i]='_';
489 buf[i] = tolower(buf[i]);
491 msg->cm_fields['F'] = strdup(buf);
492 msg->cm_fields['R'] = strdup(buf);
494 /* Set the 'List-ID' header */
495 msg->cm_fields['L'] = malloc(1024);
496 snprintf(msg->cm_fields['L'], 1024,
497 "%s <%ld.list-id.%s>",
504 * Go fetch the contents of the digest
506 fseek(sc->digestfp, 0L, SEEK_END);
507 msglen = ftell(sc->digestfp);
509 msg->cm_fields['M'] = malloc(msglen + 1);
510 fseek(sc->digestfp, 0L, SEEK_SET);
511 fread(msg->cm_fields['M'], (size_t)msglen, 1, sc->digestfp);
512 msg->cm_fields['M'][msglen] = 0;
514 fclose(sc->digestfp);
517 /* Now generate the delivery instructions */
520 * Figure out how big a buffer we need to allocate
522 for (nptr = sc->digestrecps; nptr != NULL; nptr = nptr->next) {
523 recps_len = recps_len + strlen(nptr->name) + 2;
526 recps = malloc(recps_len);
529 CtdlLogPrintf(CTDL_EMERG, "Cannot allocate %ld bytes for recps...\n", (long)recps_len);
536 for (nptr = sc->digestrecps; nptr != NULL; nptr = nptr->next) {
537 if (nptr != sc->digestrecps) {
540 strcat(recps, nptr->name);
543 /* Where do we want bounces and other noise to be heard? Surely not the list members! */
544 snprintf(bounce_to, sizeof bounce_to, "room_aide@%s", config.c_fqdn);
546 /* Now submit the message */
547 valid = validate_recipients(recps, NULL, 0);
550 valid->bounce_to = strdup(bounce_to);
551 valid->envelope_from = strdup(bounce_to);
552 CtdlSubmitMsg(msg, valid, NULL, 0);
554 CtdlFreeMessage(msg);
555 free_recipients(valid);
560 * Deliver list messages to everyone on the list ... efficiently
562 void network_deliver_list(struct CtdlMessage *msg, SpoolControl *sc) {
564 size_t recps_len = SIZ;
565 struct recptypes *valid;
569 /* Don't do this if there were no recipients! */
570 if (sc->listrecps == NULL) return;
572 /* Now generate the delivery instructions */
575 * Figure out how big a buffer we need to allocate
577 for (nptr = sc->listrecps; nptr != NULL; nptr = nptr->next) {
578 recps_len = recps_len + strlen(nptr->name) + 2;
581 recps = malloc(recps_len);
584 CtdlLogPrintf(CTDL_EMERG, "Cannot allocate %ld bytes for recps...\n", (long)recps_len);
591 for (nptr = sc->listrecps; nptr != NULL; nptr = nptr->next) {
592 if (nptr != sc->listrecps) {
595 strcat(recps, nptr->name);
598 /* Where do we want bounces and other noise to be heard? Surely not the list members! */
599 snprintf(bounce_to, sizeof bounce_to, "room_aide@%s", config.c_fqdn);
601 /* Now submit the message */
602 valid = validate_recipients(recps, NULL, 0);
605 valid->bounce_to = strdup(bounce_to);
606 valid->envelope_from = strdup(bounce_to);
607 CtdlSubmitMsg(msg, valid, NULL, 0);
608 free_recipients(valid);
610 /* Do not call CtdlFreeMessage(msg) here; the caller will free it. */
617 * Spools out one message from the list.
619 void network_spool_msg(long msgnum, void *userdata) {
622 char *newpath = NULL;
623 size_t instr_len = SIZ;
624 struct CtdlMessage *msg = NULL;
627 struct ser_ret sermsg;
629 char filename[PATH_MAX];
633 int delete_after_send = 0; /* Set to 1 to delete after spooling */
634 int ok_to_participate = 0;
635 struct recptypes *valid;
637 sc = (SpoolControl *)userdata;
640 * Process mailing list recipients
643 if (sc->listrecps != NULL) {
644 /* Fetch the message. We're going to need to modify it
645 * in order to insert the [list name] in it, etc.
647 msg = CtdlFetchMessage(msgnum, 1);
650 /* Set the 'List-ID' header */
651 if (msg->cm_fields['L'] != NULL) {
652 free(msg->cm_fields['L']);
654 msg->cm_fields['L'] = malloc(1024);
655 snprintf(msg->cm_fields['L'], 1024,
656 "%s <%ld.list-id.%s>",
662 /* Prepend "[List name]" to the subject */
663 if (msg->cm_fields['U'] == NULL) {
664 msg->cm_fields['U'] = strdup("(no subject)");
666 snprintf(buf, sizeof buf, "[%s] %s", CC->room.QRname, msg->cm_fields['U']);
667 free(msg->cm_fields['U']);
668 msg->cm_fields['U'] = strdup(buf);
670 /* Set the recipient of the list message to the
671 * email address of the room itself.
672 * FIXME ... I want to be able to pick any address
674 if (msg->cm_fields['R'] != NULL) {
675 free(msg->cm_fields['R']);
677 msg->cm_fields['R'] = malloc(256);
678 snprintf(msg->cm_fields['R'], 256,
679 "room_%s@%s", CC->room.QRname,
681 for (i=0; msg->cm_fields['R'][i]; ++i) {
682 if (isspace(msg->cm_fields['R'][i])) {
683 msg->cm_fields['R'][i] = '_';
687 /* Handle delivery */
688 network_deliver_list(msg, sc);
689 CtdlFreeMessage(msg);
694 * Process digest recipients
696 if ((sc->digestrecps != NULL) && (sc->digestfp != NULL)) {
697 msg = CtdlFetchMessage(msgnum, 1);
699 fprintf(sc->digestfp, " -----------------------------------"
700 "------------------------------------"
702 fprintf(sc->digestfp, "From: ");
703 if (msg->cm_fields['A'] != NULL) {
704 fprintf(sc->digestfp, "%s ", msg->cm_fields['A']);
706 if (msg->cm_fields['F'] != NULL) {
707 fprintf(sc->digestfp, "<%s> ", msg->cm_fields['F']);
709 else if (msg->cm_fields['N'] != NULL) {
710 fprintf(sc->digestfp, "@%s ", msg->cm_fields['N']);
712 fprintf(sc->digestfp, "\n");
713 if (msg->cm_fields['U'] != NULL) {
714 fprintf(sc->digestfp, "Subject: %s\n", msg->cm_fields['U']);
717 CC->redirect_buffer = malloc(SIZ);
718 CC->redirect_len = 0;
719 CC->redirect_alloc = SIZ;
721 safestrncpy(CC->preferred_formats, "text/plain", sizeof CC->preferred_formats);
722 CtdlOutputPreLoadedMsg(msg, MT_CITADEL, HEADERS_NONE, 0, 0, 0);
724 striplt(CC->redirect_buffer);
725 fprintf(sc->digestfp, "\n%s\n", CC->redirect_buffer);
727 free(CC->redirect_buffer);
728 CC->redirect_buffer = NULL;
729 CC->redirect_len = 0;
730 CC->redirect_alloc = 0;
732 sc->num_msgs_spooled += 1;
738 * Process client-side list participations for this room
741 if (sc->participates != NULL) {
742 msg = CtdlFetchMessage(msgnum, 1);
745 /* Only send messages which originated on our own Citadel
746 * network, otherwise we'll end up sending the remote
747 * mailing list's messages back to it, which is rude...
749 ok_to_participate = 0;
750 if (msg->cm_fields['N'] != NULL) {
751 if (!strcasecmp(msg->cm_fields['N'], config.c_nodename)) {
752 ok_to_participate = 1;
754 if (is_valid_node(NULL, NULL, msg->cm_fields['N']) == 0) {
755 ok_to_participate = 1;
758 if (ok_to_participate) {
759 if (msg->cm_fields['F'] != NULL) {
760 free(msg->cm_fields['F']);
762 msg->cm_fields['F'] = malloc(SIZ);
763 /* Replace the Internet email address of the actual
764 * author with the email address of the room itself,
765 * so the remote listserv doesn't reject us.
766 * FIXME ... I want to be able to pick any address
768 snprintf(msg->cm_fields['F'], SIZ,
769 "room_%s@%s", CC->room.QRname,
771 for (i=0; msg->cm_fields['F'][i]; ++i) {
772 if (isspace(msg->cm_fields['F'][i])) {
773 msg->cm_fields['F'][i] = '_';
778 * Figure out how big a buffer we need to allocate
780 for (nptr = sc->participates; nptr != NULL; nptr = nptr->next) {
782 if (msg->cm_fields['R'] == NULL) {
783 free(msg->cm_fields['R']);
785 msg->cm_fields['R'] = strdup(nptr->name);
787 valid = validate_recipients(nptr->name, NULL, 0);
788 CtdlSubmitMsg(msg, valid, "", 0);
789 free_recipients(valid);
793 CtdlFreeMessage(msg);
798 * Process IGnet push shares
800 msg = CtdlFetchMessage(msgnum, 1);
804 /* Prepend our node name to the Path field whenever
805 * sending a message to another IGnet node
807 if (msg->cm_fields['P'] == NULL) {
808 msg->cm_fields['P'] = strdup("username");
810 newpath_len = strlen(msg->cm_fields['P']) +
811 strlen(config.c_nodename) + 2;
812 newpath = malloc(newpath_len);
813 snprintf(newpath, newpath_len, "%s!%s",
814 config.c_nodename, msg->cm_fields['P']);
815 free(msg->cm_fields['P']);
816 msg->cm_fields['P'] = newpath;
819 * Determine if this message is set to be deleted
820 * after sending out on the network
822 if (msg->cm_fields['S'] != NULL) {
823 if (!strcasecmp(msg->cm_fields['S'], "CANCEL")) {
824 delete_after_send = 1;
828 /* Now send it to every node */
829 if (sc->ignet_push_shares != NULL)
830 for (mptr = sc->ignet_push_shares; mptr != NULL;
835 /* Check for valid node name */
836 if (is_valid_node(NULL, NULL, mptr->remote_nodename) != 0) {
837 CtdlLogPrintf(CTDL_ERR, "Invalid node <%s>\n", mptr->remote_nodename);
841 /* Check for split horizon */
842 CtdlLogPrintf(CTDL_DEBUG, "Path is %s\n", msg->cm_fields['P']);
843 bang = num_tokens(msg->cm_fields['P'], '!');
844 if (bang > 1) for (i=0; i<(bang-1); ++i) {
845 extract_token(buf, msg->cm_fields['P'], i, '!', sizeof buf);
846 CtdlLogPrintf(CTDL_DEBUG, "Compare <%s> to <%s>\n",
847 buf, mptr->remote_nodename) ;
848 if (!strcasecmp(buf, mptr->remote_nodename)) {
850 CtdlLogPrintf(CTDL_DEBUG, "Not sending to %s\n",
851 mptr->remote_nodename);
854 CtdlLogPrintf(CTDL_DEBUG, "Sending to %s\n", mptr->remote_nodename);
858 /* Send the message */
862 * Force the message to appear in the correct room
863 * on the far end by setting the C field correctly
865 if (msg->cm_fields['C'] != NULL) {
866 free(msg->cm_fields['C']);
868 if (!IsEmptyStr(mptr->remote_roomname)) {
869 msg->cm_fields['C'] = strdup(mptr->remote_roomname);
872 msg->cm_fields['C'] = strdup(CC->room.QRname);
875 /* serialize it for transmission */
876 serialize_message(&sermsg, msg);
877 if (sermsg.len > 0) {
879 /* write it to the spool file */
880 snprintf(filename, sizeof filename,"%s/%s",
882 mptr->remote_nodename);
883 CtdlLogPrintf(CTDL_DEBUG, "Appending to %s\n", filename);
884 fp = fopen(filename, "ab");
891 CtdlLogPrintf(CTDL_ERR, "%s: %s\n", filename, strerror(errno));
894 /* free the serialized version */
900 CtdlFreeMessage(msg);
903 /* update lastsent */
904 sc->lastsent = msgnum;
906 /* Delete this message if delete-after-send is set */
907 if (delete_after_send) {
908 CtdlDeleteMessages(CC->room.QRname, &msgnum, 1, "");
914 int read_spoolcontrol_file(SpoolControl **scc, char *filename)
920 char roomname[ROOMNAMELEN];
923 int skipthisline = 0;
924 namelist *nptr = NULL;
925 maplist *mptr = NULL;
928 fp = fopen(filename, "r");
932 sc = malloc(sizeof(SpoolControl));
933 memset(sc, 0, sizeof(SpoolControl));
936 while (fgets(buf, sizeof buf, fp) != NULL) {
937 buf[strlen(buf)-1] = 0;
939 extract_token(instr, buf, 0, '|', sizeof instr);
940 if (!strcasecmp(instr, "lastsent")) {
941 sc->lastsent = extract_long(buf, 1);
943 else if (!strcasecmp(instr, "listrecp")) {
945 malloc(sizeof(namelist));
946 nptr->next = sc->listrecps;
947 extract_token(nptr->name, buf, 1, '|', sizeof nptr->name);
948 sc->listrecps = nptr;
950 else if (!strcasecmp(instr, "participate")) {
952 malloc(sizeof(namelist));
953 nptr->next = sc->participates;
954 extract_token(nptr->name, buf, 1, '|', sizeof nptr->name);
955 sc->participates = nptr;
957 else if (!strcasecmp(instr, "digestrecp")) {
959 malloc(sizeof(namelist));
960 nptr->next = sc->digestrecps;
961 extract_token(nptr->name, buf, 1, '|', sizeof nptr->name);
962 sc->digestrecps = nptr;
964 else if (!strcasecmp(instr, "ignet_push_share")) {
965 extract_token(nodename, buf, 1, '|', sizeof nodename);
966 extract_token(roomname, buf, 2, '|', sizeof roomname);
967 mptr = (maplist *) malloc(sizeof(maplist));
968 mptr->next = sc->ignet_push_shares;
969 strcpy(mptr->remote_nodename, nodename);
970 strcpy(mptr->remote_roomname, roomname);
971 sc->ignet_push_shares = mptr;
974 /* Preserve 'other' lines ... *unless* they happen to
975 * be subscribe/unsubscribe pendings with expired
979 if (!strncasecmp(buf, "subpending|", 11)) {
980 if (time(NULL) - extract_long(buf, 4) > EXP) {
984 if (!strncasecmp(buf, "unsubpending|", 13)) {
985 if (time(NULL) - extract_long(buf, 3) > EXP) {
990 if (skipthisline == 0) {
991 linesize = strlen(buf);
992 sc->misc = realloc(sc->misc,
993 (miscsize + linesize + 2) );
994 sprintf(&sc->misc[miscsize], "%s\n", buf);
995 miscsize = miscsize + linesize + 1;
1005 void free_spoolcontrol_struct(SpoolControl **scc)
1008 namelist *nptr = NULL;
1009 maplist *mptr = NULL;
1012 while (sc->listrecps != NULL) {
1013 nptr = sc->listrecps->next;
1014 free(sc->listrecps);
1015 sc->listrecps = nptr;
1017 /* Do the same for digestrecps */
1018 while (sc->digestrecps != NULL) {
1019 nptr = sc->digestrecps->next;
1020 free(sc->digestrecps);
1021 sc->digestrecps = nptr;
1023 /* Do the same for participates */
1024 while (sc->participates != NULL) {
1025 nptr = sc->participates->next;
1026 free(sc->participates);
1027 sc->participates = nptr;
1029 while (sc->ignet_push_shares != NULL) {
1030 mptr = sc->ignet_push_shares->next;
1031 free(sc->ignet_push_shares);
1032 sc->ignet_push_shares = mptr;
1039 int writenfree_spoolcontrol_file(SpoolControl **scc, char *filename)
1043 namelist *nptr = NULL;
1044 maplist *mptr = NULL;
1047 fp = fopen(filename, "w");
1049 CtdlLogPrintf(CTDL_CRIT, "ERROR: cannot open %s: %s\n",
1050 filename, strerror(errno));
1051 free_spoolcontrol_struct(scc);
1054 fprintf(fp, "lastsent|%ld\n", sc->lastsent);
1056 /* Write out the listrecps while freeing from memory at the
1057 * same time. Am I clever or what? :)
1059 while (sc->listrecps != NULL) {
1060 fprintf(fp, "listrecp|%s\n", sc->listrecps->name);
1061 nptr = sc->listrecps->next;
1062 free(sc->listrecps);
1063 sc->listrecps = nptr;
1065 /* Do the same for digestrecps */
1066 while (sc->digestrecps != NULL) {
1067 fprintf(fp, "digestrecp|%s\n", sc->digestrecps->name);
1068 nptr = sc->digestrecps->next;
1069 free(sc->digestrecps);
1070 sc->digestrecps = nptr;
1072 /* Do the same for participates */
1073 while (sc->participates != NULL) {
1074 fprintf(fp, "participate|%s\n", sc->participates->name);
1075 nptr = sc->participates->next;
1076 free(sc->participates);
1077 sc->participates = nptr;
1079 while (sc->ignet_push_shares != NULL) {
1080 fprintf(fp, "ignet_push_share|%s", sc->ignet_push_shares->remote_nodename);
1081 if (!IsEmptyStr(sc->ignet_push_shares->remote_roomname)) {
1082 fprintf(fp, "|%s", sc->ignet_push_shares->remote_roomname);
1085 mptr = sc->ignet_push_shares->next;
1086 free(sc->ignet_push_shares);
1087 sc->ignet_push_shares = mptr;
1089 if (sc->misc != NULL) {
1090 fwrite(sc->misc, strlen(sc->misc), 1, fp);
1100 int is_recipient(SpoolControl *sc, const char *Name)
1106 nptr = sc->listrecps;
1107 while (nptr != NULL) {
1108 if (strncmp(Name, nptr->name, len)==0)
1112 /* Do the same for digestrecps */
1113 nptr = sc->digestrecps;
1114 while (nptr != NULL) {
1115 if (strncmp(Name, nptr->name, len)==0)
1119 /* Do the same for participates */
1120 nptr = sc->participates;
1121 while (nptr != NULL) {
1122 if (strncmp(Name, nptr->name, len)==0)
1131 * Batch up and send all outbound traffic from the current room
1133 void network_spoolout_room(char *room_to_spool) {
1135 char filename[PATH_MAX];
1140 * If the room doesn't exist, don't try to perform its networking tasks.
1141 * Normally this should never happen, but once in a while maybe a room gets
1142 * queued for networking and then deleted before it can happen.
1144 if (CtdlGetRoom(&CC->room, room_to_spool) != 0) {
1145 CtdlLogPrintf(CTDL_CRIT, "ERROR: cannot load <%s>\n", room_to_spool);
1149 assoc_file_name(filename, sizeof filename, &CC->room, ctdl_netcfg_dir);
1150 begin_critical_section(S_NETCONFIGS);
1152 /* Only do net processing for rooms that have netconfigs */
1153 if (!read_spoolcontrol_file(&sc, filename))
1155 end_critical_section(S_NETCONFIGS);
1158 CtdlLogPrintf(CTDL_INFO, "Networking started for <%s>\n", CC->room.QRname);
1160 /* If there are digest recipients, we have to build a digest */
1161 if (sc->digestrecps != NULL) {
1162 sc->digestfp = tmpfile();
1163 fprintf(sc->digestfp, "Content-type: text/plain\n\n");
1166 /* Do something useful */
1167 CtdlForEachMessage(MSGS_GT, sc->lastsent, NULL, NULL, NULL,
1168 network_spool_msg, sc);
1170 /* If we wrote a digest, deliver it and then close it */
1171 snprintf(buf, sizeof buf, "room_%s@%s",
1172 CC->room.QRname, config.c_fqdn);
1173 for (i=0; buf[i]; ++i) {
1174 buf[i] = tolower(buf[i]);
1175 if (isspace(buf[i])) buf[i] = '_';
1177 if (sc->digestfp != NULL) {
1178 fprintf(sc->digestfp, " -----------------------------------"
1179 "------------------------------------"
1181 "You are subscribed to the '%s' "
1183 "To post to the list: %s\n",
1184 CC->room.QRname, buf
1186 network_deliver_digest(sc); /* deliver and close */
1189 /* Now rewrite the config file */
1190 writenfree_spoolcontrol_file (&sc, filename);
1191 end_critical_section(S_NETCONFIGS);
1197 * Send the *entire* contents of the current room to one specific network node,
1198 * ignoring anything we know about which messages have already undergone
1199 * network processing. This can be used to bring a new node into sync.
1201 int network_sync_to(char *target_node) {
1203 int num_spooled = 0;
1209 char filename[PATH_MAX];
1212 /* Grab the configuration line we're looking for */
1213 assoc_file_name(filename, sizeof filename, &CC->room, ctdl_netcfg_dir);
1214 begin_critical_section(S_NETCONFIGS);
1215 fp = fopen(filename, "r");
1217 end_critical_section(S_NETCONFIGS);
1220 while (fgets(buf, sizeof buf, fp) != NULL) {
1221 buf[strlen(buf)-1] = 0;
1222 extract_token(sc_type, buf, 0, '|', sizeof sc_type);
1223 extract_token(sc_node, buf, 1, '|', sizeof sc_node);
1224 extract_token(sc_room, buf, 2, '|', sizeof sc_room);
1225 if ( (!strcasecmp(sc_type, "ignet_push_share"))
1226 && (!strcasecmp(sc_node, target_node)) ) {
1229 /* Concise syntax because we don't need a full linked-list */
1230 memset(&sc, 0, sizeof(SpoolControl));
1231 sc.ignet_push_shares = (maplist *)
1232 malloc(sizeof(maplist));
1233 sc.ignet_push_shares->next = NULL;
1234 safestrncpy(sc.ignet_push_shares->remote_nodename,
1236 sizeof sc.ignet_push_shares->remote_nodename);
1237 safestrncpy(sc.ignet_push_shares->remote_roomname,
1239 sizeof sc.ignet_push_shares->remote_roomname);
1243 end_critical_section(S_NETCONFIGS);
1245 if (!found_node) return(-1);
1247 /* Send ALL messages */
1248 num_spooled = CtdlForEachMessage(MSGS_ALL, 0L, NULL, NULL, NULL,
1249 network_spool_msg, &sc);
1251 /* Concise cleanup because we know there's only one node in the sc */
1252 free(sc.ignet_push_shares);
1254 CtdlLogPrintf(CTDL_NOTICE, "Synchronized %d messages to <%s>\n",
1255 num_spooled, target_node);
1256 return(num_spooled);
1261 * Implements the NSYN command
1263 void cmd_nsyn(char *argbuf) {
1265 char target_node[256];
1267 if (CtdlAccessCheck(ac_aide)) return;
1269 extract_token(target_node, argbuf, 0, '|', sizeof target_node);
1270 num_spooled = network_sync_to(target_node);
1271 if (num_spooled >= 0) {
1272 cprintf("%d Spooled %d messages.\n", CIT_OK, num_spooled);
1275 cprintf("%d No such room/node share exists.\n",
1276 ERROR + ROOM_NOT_FOUND);
1283 * Batch up and send all outbound traffic from the current room
1285 void network_queue_room(struct ctdlroom *qrbuf, void *data) {
1286 struct RoomProcList *ptr;
1288 ptr = (struct RoomProcList *) malloc(sizeof (struct RoomProcList));
1289 if (ptr == NULL) return;
1291 safestrncpy(ptr->name, qrbuf->QRname, sizeof ptr->name);
1292 begin_critical_section(S_RPLIST);
1295 end_critical_section(S_RPLIST);
1298 void destroy_network_queue_room(void)
1300 struct RoomProcList *cur, *p;
1301 NetMap *nmcur, *nmp;
1304 begin_critical_section(S_RPLIST);
1312 end_critical_section(S_RPLIST);
1315 while (nmcur != NULL)
1322 if (working_ignetcfg != NULL)
1323 free (working_ignetcfg);
1324 working_ignetcfg = NULL;
1329 * Learn topology from path fields
1331 void network_learn_topology(char *node, char *path) {
1335 strcpy(nexthop, "");
1337 if (num_tokens(path, '!') < 3) return;
1338 for (nmptr = the_netmap; nmptr != NULL; nmptr = nmptr->next) {
1339 if (!strcasecmp(nmptr->nodename, node)) {
1340 extract_token(nmptr->nexthop, path, 0, '!', sizeof nmptr->nexthop);
1341 nmptr->lastcontact = time(NULL);
1347 /* If we got here then it's not in the map, so add it. */
1348 nmptr = (NetMap *) malloc(sizeof (NetMap));
1349 strcpy(nmptr->nodename, node);
1350 nmptr->lastcontact = time(NULL);
1351 extract_token(nmptr->nexthop, path, 0, '!', sizeof nmptr->nexthop);
1352 nmptr->next = the_netmap;
1361 * Bounce a message back to the sender
1363 void network_bounce(struct CtdlMessage *msg, char *reason) {
1364 char *oldpath = NULL;
1366 char bouncesource[SIZ];
1367 char recipient[SIZ];
1368 struct recptypes *valid = NULL;
1369 char force_room[ROOMNAMELEN];
1370 static int serialnum = 0;
1373 CtdlLogPrintf(CTDL_DEBUG, "entering network_bounce()\n");
1375 if (msg == NULL) return;
1377 snprintf(bouncesource, sizeof bouncesource, "%s@%s", BOUNCESOURCE, config.c_nodename);
1380 * Give it a fresh message ID
1382 if (msg->cm_fields['I'] != NULL) {
1383 free(msg->cm_fields['I']);
1385 snprintf(buf, sizeof buf, "%ld.%04lx.%04x@%s",
1386 (long)time(NULL), (long)getpid(), ++serialnum, config.c_fqdn);
1387 msg->cm_fields['I'] = strdup(buf);
1390 * FIXME ... right now we're just sending a bounce; we really want to
1391 * include the text of the bounced message.
1393 if (msg->cm_fields['M'] != NULL) {
1394 free(msg->cm_fields['M']);
1396 msg->cm_fields['M'] = strdup(reason);
1397 msg->cm_format_type = 0;
1400 * Turn the message around
1402 if (msg->cm_fields['R'] == NULL) {
1403 free(msg->cm_fields['R']);
1406 if (msg->cm_fields['D'] == NULL) {
1407 free(msg->cm_fields['D']);
1410 snprintf(recipient, sizeof recipient, "%s@%s",
1411 msg->cm_fields['A'], msg->cm_fields['N']);
1413 if (msg->cm_fields['A'] == NULL) {
1414 free(msg->cm_fields['A']);
1417 if (msg->cm_fields['N'] == NULL) {
1418 free(msg->cm_fields['N']);
1421 if (msg->cm_fields['U'] == NULL) {
1422 free(msg->cm_fields['U']);
1425 msg->cm_fields['A'] = strdup(BOUNCESOURCE);
1426 msg->cm_fields['N'] = strdup(config.c_nodename);
1427 msg->cm_fields['U'] = strdup("Delivery Status Notification (Failure)");
1429 /* prepend our node to the path */
1430 if (msg->cm_fields['P'] != NULL) {
1431 oldpath = msg->cm_fields['P'];
1432 msg->cm_fields['P'] = NULL;
1435 oldpath = strdup("unknown_user");
1437 size = strlen(oldpath) + SIZ;
1438 msg->cm_fields['P'] = malloc(size);
1439 snprintf(msg->cm_fields['P'], size, "%s!%s", config.c_nodename, oldpath);
1442 /* Now submit the message */
1443 valid = validate_recipients(recipient, NULL, 0);
1444 if (valid != NULL) if (valid->num_error != 0) {
1445 free_recipients(valid);
1448 if ( (valid == NULL) || (!strcasecmp(recipient, bouncesource)) ) {
1449 strcpy(force_room, config.c_aideroom);
1452 strcpy(force_room, "");
1454 if ( (valid == NULL) && IsEmptyStr(force_room) ) {
1455 strcpy(force_room, config.c_aideroom);
1457 CtdlSubmitMsg(msg, valid, force_room, 0);
1460 if (valid != NULL) free_recipients(valid);
1461 CtdlFreeMessage(msg);
1462 CtdlLogPrintf(CTDL_DEBUG, "leaving network_bounce()\n");
1469 * Process a buffer containing a single message from a single file
1470 * from the inbound queue
1472 void network_process_buffer(char *buffer, long size) {
1473 struct CtdlMessage *msg = NULL;
1476 struct recptypes *recp = NULL;
1477 char target_room[ROOMNAMELEN];
1478 struct ser_ret sermsg;
1479 char *oldpath = NULL;
1480 char filename[PATH_MAX];
1483 unsigned char firstbyte;
1484 unsigned char lastbyte;
1486 /* Validate just a little bit. First byte should be FF and * last byte should be 00. */
1487 firstbyte = buffer[0];
1488 lastbyte = buffer[size-1];
1489 if ( (firstbyte != 255) || (lastbyte != 0) ) {
1490 CtdlLogPrintf(CTDL_ERR, "Corrupt message ignored. Length=%ld, firstbyte = %d, lastbyte = %d\n",
1491 size, firstbyte, lastbyte);
1495 /* Set default target room to trash */
1496 strcpy(target_room, TWITROOM);
1498 /* Load the message into memory */
1499 msg = (struct CtdlMessage *) malloc(sizeof(struct CtdlMessage));
1500 memset(msg, 0, sizeof(struct CtdlMessage));
1501 msg->cm_magic = CTDLMESSAGE_MAGIC;
1502 msg->cm_anon_type = buffer[1];
1503 msg->cm_format_type = buffer[2];
1505 for (pos = 3; pos < size; ++pos) {
1506 field = buffer[pos];
1507 msg->cm_fields[field] = strdup(&buffer[pos+1]);
1508 pos = pos + strlen(&buffer[(int)pos]);
1511 /* Check for message routing */
1512 if (msg->cm_fields['D'] != NULL) {
1513 if (strcasecmp(msg->cm_fields['D'], config.c_nodename)) {
1515 /* route the message */
1516 strcpy(nexthop, "");
1517 if (is_valid_node(nexthop, NULL, msg->cm_fields['D']) == 0) {
1518 /* prepend our node to the path */
1519 if (msg->cm_fields['P'] != NULL) {
1520 oldpath = msg->cm_fields['P'];
1521 msg->cm_fields['P'] = NULL;
1524 oldpath = strdup("unknown_user");
1526 size = strlen(oldpath) + SIZ;
1527 msg->cm_fields['P'] = malloc(size);
1528 snprintf(msg->cm_fields['P'], size, "%s!%s",
1529 config.c_nodename, oldpath);
1532 /* serialize the message */
1533 serialize_message(&sermsg, msg);
1536 if (IsEmptyStr(nexthop)) {
1537 strcpy(nexthop, msg->cm_fields['D']);
1544 CtdlLogPrintf(CTDL_DEBUG, "Appending to %s\n", filename);
1545 fp = fopen(filename, "ab");
1552 CtdlLogPrintf(CTDL_ERR, "%s: %s\n", filename, strerror(errno));
1555 CtdlFreeMessage(msg);
1559 else { /* invalid destination node name */
1562 "A message you sent could not be delivered due to an invalid destination node"
1563 " name. Please check the address and try sending the message again.\n");
1572 * Check to see if we already have a copy of this message, and
1573 * abort its processing if so. (We used to post a warning to Aide>
1574 * every time this happened, but the network is now so densely
1575 * connected that it's inevitable.)
1577 if (network_usetable(msg) != 0) {
1578 CtdlFreeMessage(msg);
1582 /* Learn network topology from the path */
1583 if ((msg->cm_fields['N'] != NULL) && (msg->cm_fields['P'] != NULL)) {
1584 network_learn_topology(msg->cm_fields['N'],
1585 msg->cm_fields['P']);
1588 /* Is the sending node giving us a very persuasive suggestion about
1589 * which room this message should be saved in? If so, go with that.
1591 if (msg->cm_fields['C'] != NULL) {
1592 safestrncpy(target_room,
1593 msg->cm_fields['C'],
1594 sizeof target_room);
1597 /* Otherwise, does it have a recipient? If so, validate it... */
1598 else if (msg->cm_fields['R'] != NULL) {
1599 recp = validate_recipients(msg->cm_fields['R'], NULL, 0);
1600 if (recp != NULL) if (recp->num_error != 0) {
1602 "A message you sent could not be delivered due to an invalid address.\n"
1603 "Please check the address and try sending the message again.\n");
1605 free_recipients(recp);
1608 strcpy(target_room, ""); /* no target room if mail */
1611 /* Our last shot at finding a home for this message is to see if
1612 * it has the O field (Originating room) set.
1614 else if (msg->cm_fields['O'] != NULL) {
1615 safestrncpy(target_room,
1616 msg->cm_fields['O'],
1617 sizeof target_room);
1620 /* Strip out fields that are only relevant during transit */
1621 if (msg->cm_fields['D'] != NULL) {
1622 free(msg->cm_fields['D']);
1623 msg->cm_fields['D'] = NULL;
1625 if (msg->cm_fields['C'] != NULL) {
1626 free(msg->cm_fields['C']);
1627 msg->cm_fields['C'] = NULL;
1630 /* save the message into a room */
1631 if (PerformNetprocHooks(msg, target_room) == 0) {
1632 msg->cm_flags = CM_SKIP_HOOKS;
1633 CtdlSubmitMsg(msg, recp, target_room, 0);
1635 CtdlFreeMessage(msg);
1636 free_recipients(recp);
1641 * Process a single message from a single file from the inbound queue
1643 void network_process_message(FILE *fp, long msgstart, long msgend) {
1648 hold_pos = ftell(fp);
1649 size = msgend - msgstart + 1;
1650 buffer = malloc(size);
1651 if (buffer != NULL) {
1652 fseek(fp, msgstart, SEEK_SET);
1653 fread(buffer, size, 1, fp);
1654 network_process_buffer(buffer, size);
1658 fseek(fp, hold_pos, SEEK_SET);
1663 * Process a single file from the inbound queue
1665 void network_process_file(char *filename) {
1667 long msgstart = (-1L);
1668 long msgend = (-1L);
1673 fp = fopen(filename, "rb");
1675 CtdlLogPrintf(CTDL_CRIT, "Error opening %s: %s\n", filename, strerror(errno));
1679 fseek(fp, 0L, SEEK_END);
1680 CtdlLogPrintf(CTDL_INFO, "network: processing %ld bytes from %s\n", ftell(fp), filename);
1683 /* Look for messages in the data stream and break them out */
1684 while (ch = getc(fp), ch >= 0) {
1687 if (msgstart >= 0L) {
1688 msgend = msgcur - 1;
1689 network_process_message(fp, msgstart, msgend);
1697 msgend = msgcur - 1;
1698 if (msgstart >= 0L) {
1699 network_process_message(fp, msgstart, msgend);
1708 * Process anything in the inbound queue
1710 void network_do_spoolin(void) {
1713 struct stat statbuf;
1714 char filename[PATH_MAX];
1715 static time_t last_spoolin_mtime = 0L;
1718 * Check the spoolin directory's modification time. If it hasn't
1719 * been touched, we don't need to scan it.
1721 if (stat(ctdl_netin_dir, &statbuf)) return;
1722 if (statbuf.st_mtime == last_spoolin_mtime) {
1723 CtdlLogPrintf(CTDL_DEBUG, "network: nothing in inbound queue\n");
1726 last_spoolin_mtime = statbuf.st_mtime;
1727 CtdlLogPrintf(CTDL_DEBUG, "network: processing inbound queue\n");
1730 * Ok, there's something interesting in there, so scan it.
1732 dp = opendir(ctdl_netin_dir);
1733 if (dp == NULL) return;
1735 while (d = readdir(dp), d != NULL) {
1736 if ((strcmp(d->d_name, ".")) && (strcmp(d->d_name, ".."))) {
1742 network_process_file(filename);
1750 * Delete any files in the outbound queue that were intended
1751 * to be sent to nodes which no longer exist.
1753 void network_purge_spoolout(void) {
1756 char filename[PATH_MAX];
1760 dp = opendir(ctdl_netout_dir);
1761 if (dp == NULL) return;
1763 while (d = readdir(dp), d != NULL) {
1764 if (!strcmp(d->d_name, ".") || !strcmp(d->d_name, ".."))
1772 strcpy(nexthop, "");
1773 i = is_valid_node(nexthop, NULL, d->d_name);
1775 if ( (i != 0) || !IsEmptyStr(nexthop) ) {
1786 * receive network spool from the remote system
1788 void receive_spool(int sock, char *remote_nodename) {
1789 long download_len = 0L;
1790 long bytes_received = 0L;
1791 long bytes_copied = 0L;
1793 static char pbuf[IGNET_PACKET_SIZE];
1794 char tempfilename[PATH_MAX];
1795 char filename[PATH_MAX];
1799 CtdlMakeTempFileName(tempfilename, sizeof tempfilename);
1800 if (sock_puts(sock, "NDOP") < 0) return;
1801 if (sock_getln(sock, buf, sizeof buf) < 0) return;
1802 CtdlLogPrintf(CTDL_DEBUG, "<%s\n", buf);
1803 if (buf[0] != '2') {
1806 download_len = extract_long(&buf[4], 0);
1808 bytes_received = 0L;
1809 fp = fopen(tempfilename, "w");
1811 CtdlLogPrintf(CTDL_CRIT, "cannot open download file locally: %s\n",
1816 while (bytes_received < download_len) {
1818 * If shutting down we can exit here and unlink the temp file.
1819 * this shouldn't loose us any messages.
1821 if (CtdlThreadCheckStop())
1824 unlink(tempfilename);
1827 snprintf(buf, sizeof buf, "READ %ld|%ld",
1829 ((download_len - bytes_received > IGNET_PACKET_SIZE)
1830 ? IGNET_PACKET_SIZE : (download_len - bytes_received)));
1831 if (sock_puts(sock, buf) < 0) {
1833 unlink(tempfilename);
1836 if (sock_getln(sock, buf, sizeof buf) < 0) {
1838 unlink(tempfilename);
1841 if (buf[0] == '6') {
1842 plen = extract_long(&buf[4], 0);
1843 if (sock_read(sock, pbuf, plen, 1) < 0) {
1845 unlink(tempfilename);
1848 fwrite((char *) pbuf, plen, 1, fp);
1849 bytes_received = bytes_received + plen;
1854 /** Last chance for shutdown exit */
1855 if (CtdlThreadCheckStop())
1857 unlink(tempfilename);
1860 if (sock_puts(sock, "CLOS") < 0) {
1861 unlink(tempfilename);
1865 * From here on we must complete or messages will get lost
1867 if (sock_getln(sock, buf, sizeof buf) < 0) {
1868 unlink(tempfilename);
1871 if (download_len > 0) {
1872 CtdlLogPrintf(CTDL_NOTICE, "Received %ld octets from <%s>\n", download_len, remote_nodename);
1874 CtdlLogPrintf(CTDL_DEBUG, "%s\n", buf);
1876 /* Now copy the temp file to its permanent location.
1877 * (We copy instead of link because they may be on different filesystems)
1879 begin_critical_section(S_NETSPOOL);
1887 fp = fopen(tempfilename, "r");
1889 newfp = fopen(filename, "w");
1890 if (newfp != NULL) {
1892 while (bytes_copied < download_len) {
1893 plen = download_len - bytes_copied;
1894 if (plen > sizeof buf) {
1897 fread(buf, plen, 1, fp);
1898 fwrite(buf, plen, 1, newfp);
1899 bytes_copied += plen;
1905 end_critical_section(S_NETSPOOL);
1906 unlink(tempfilename);
1912 * transmit network spool to the remote system
1914 void transmit_spool(int sock, char *remote_nodename)
1919 long bytes_to_write, thisblock, bytes_written;
1923 if (sock_puts(sock, "NUOP") < 0) return;
1924 if (sock_getln(sock, buf, sizeof buf) < 0) return;
1925 CtdlLogPrintf(CTDL_DEBUG, "<%s\n", buf);
1926 if (buf[0] != '2') {
1930 snprintf(sfname, sizeof sfname,
1934 fd = open(sfname, O_RDONLY);
1936 if (errno != ENOENT) {
1937 CtdlLogPrintf(CTDL_CRIT, "cannot open upload file locally: %s\n",
1943 while (plen = (long) read(fd, pbuf, IGNET_PACKET_SIZE), plen > 0L) {
1944 bytes_to_write = plen;
1945 while (bytes_to_write > 0L) {
1946 /** Exit if shutting down */
1947 if (CtdlThreadCheckStop())
1953 snprintf(buf, sizeof buf, "WRIT %ld", bytes_to_write);
1954 if (sock_puts(sock, buf) < 0) {
1958 if (sock_getln(sock, buf, sizeof buf) < 0) {
1962 thisblock = atol(&buf[4]);
1963 if (buf[0] == '7') {
1964 if (sock_write(sock, pbuf,
1965 (int) thisblock) < 0) {
1969 bytes_to_write -= thisblock;
1970 bytes_written += thisblock;
1979 /** Last chance for shutdown exit */
1980 if(CtdlThreadCheckStop())
1983 if (sock_puts(sock, "UCLS 1") < 0) return;
1985 * From here on we must complete or messages will get lost
1987 if (sock_getln(sock, buf, sizeof buf) < 0) return;
1988 CtdlLogPrintf(CTDL_NOTICE, "Sent %ld octets to <%s>\n",
1989 bytes_written, remote_nodename);
1990 CtdlLogPrintf(CTDL_DEBUG, "<%s\n", buf);
1991 if (buf[0] == '2') {
1992 CtdlLogPrintf(CTDL_DEBUG, "Removing <%s>\n", sfname);
2000 * Poll one Citadel node (called by network_poll_other_citadel_nodes() below)
2002 void network_poll_node(char *node, char *secret, char *host, char *port) {
2006 char connected_to[SIZ];
2008 if (network_talking_to(node, NTT_CHECK)) return;
2009 network_talking_to(node, NTT_ADD);
2010 CtdlLogPrintf(CTDL_NOTICE, "Connecting to <%s> at %s:%s\n", node, host, port);
2012 sock = sock_connect(host, port, "tcp");
2014 CtdlLogPrintf(CTDL_ERR, "Could not connect: %s\n", strerror(errno));
2015 network_talking_to(node, NTT_REMOVE);
2019 CtdlLogPrintf(CTDL_DEBUG, "Connected!\n");
2021 /* Read the server greeting */
2022 if (sock_getln(sock, buf, sizeof buf) < 0) goto bail;
2023 CtdlLogPrintf(CTDL_DEBUG, ">%s\n", buf);
2025 /* Check that the remote is who we think it is and warn the Aide if not */
2026 extract_token (connected_to, buf, 1, ' ', sizeof connected_to);
2027 if (strcmp(connected_to, node))
2029 snprintf (err_buf, sizeof(err_buf), "Connected to node \"%s\" but I was expecting to connect to node \"%s\".", connected_to, node);
2030 CtdlAideMessage(err_buf, "IGNet Networking error.");
2033 /* Identify ourselves */
2034 snprintf(buf, sizeof buf, "NETP %s|%s", config.c_nodename, secret);
2035 CtdlLogPrintf(CTDL_DEBUG, "<%s\n", buf);
2036 if (sock_puts(sock, buf) <0) goto bail;
2037 if (sock_getln(sock, buf, sizeof buf) < 0) goto bail;
2038 CtdlLogPrintf(CTDL_DEBUG, ">%s\n", buf);
2039 if (buf[0] != '2') goto bail;
2041 /* At this point we are authenticated. */
2042 if (!CtdlThreadCheckStop())
2043 receive_spool(sock, node);
2044 if (!CtdlThreadCheckStop())
2045 transmit_spool(sock, node);
2047 sock_puts(sock, "QUIT");
2048 bail: sock_close(sock);
2049 network_talking_to(node, NTT_REMOVE);
2055 * Poll other Citadel nodes and transfer inbound/outbound network data.
2056 * Set "full" to nonzero to force a poll of every node, or to zero to poll
2057 * only nodes to which we have data to send.
2059 void network_poll_other_citadel_nodes(int full_poll) {
2067 char spoolfile[256];
2069 if (working_ignetcfg == NULL) {
2070 CtdlLogPrintf(CTDL_DEBUG, "No nodes defined - not polling\n");
2074 /* Use the string tokenizer to grab one line at a time */
2075 for (i=0; i<num_tokens(working_ignetcfg, '\n'); ++i) {
2076 if(CtdlThreadCheckStop())
2078 extract_token(linebuf, working_ignetcfg, i, '\n', sizeof linebuf);
2079 extract_token(node, linebuf, 0, '|', sizeof node);
2080 extract_token(secret, linebuf, 1, '|', sizeof secret);
2081 extract_token(host, linebuf, 2, '|', sizeof host);
2082 extract_token(port, linebuf, 3, '|', sizeof port);
2083 if ( !IsEmptyStr(node) && !IsEmptyStr(secret)
2084 && !IsEmptyStr(host) && !IsEmptyStr(port)) {
2092 if (access(spoolfile, R_OK) == 0) {
2097 network_poll_node(node, secret, host, port);
2108 * It's ok if these directories already exist. Just fail silently.
2110 void create_spool_dirs(void) {
2111 mkdir(ctdl_spool_dir, 0700);
2112 chown(ctdl_spool_dir, CTDLUID, (-1));
2113 mkdir(ctdl_netin_dir, 0700);
2114 chown(ctdl_netin_dir, CTDLUID, (-1));
2115 mkdir(ctdl_netout_dir, 0700);
2116 chown(ctdl_netout_dir, CTDLUID, (-1));
2124 * network_do_queue()
2126 * Run through the rooms doing various types of network stuff.
2128 void *network_do_queue(void *args) {
2129 static time_t last_run = 0L;
2130 struct RoomProcList *ptr;
2131 int full_processing = 1;
2132 struct CitContext networkerCC;
2134 /* Give the networker its own private CitContext */
2135 CtdlFillSystemContext(&networkerCC, "network");
2136 citthread_setspecific(MyConKey, (void *)&networkerCC );
2139 * Run the full set of processing tasks no more frequently
2140 * than once every n seconds
2142 if ( (time(NULL) - last_run) < config.c_net_freq ) {
2143 full_processing = 0;
2144 CtdlLogPrintf(CTDL_DEBUG, "Network full processing in %ld seconds.\n", config.c_net_freq - (time(NULL)- last_run));
2148 * This is a simple concurrency check to make sure only one queue run
2149 * is done at a time. We could do this with a mutex, but since we
2150 * don't really require extremely fine granularity here, we'll do it
2151 * with a static variable instead.
2153 if (doing_queue) return NULL;
2156 /* Load the IGnet Configuration into memory */
2157 load_working_ignetcfg();
2160 * Poll other Citadel nodes. Maybe. If "full_processing" is set
2161 * then we poll everyone. Otherwise we only poll nodes we have stuff
2164 network_poll_other_citadel_nodes(full_processing);
2167 * Load the network map and filter list into memory.
2170 filterlist = load_filter_list();
2173 * Go ahead and run the queue
2175 if (full_processing && !CtdlThreadCheckStop()) {
2176 CtdlLogPrintf(CTDL_DEBUG, "network: loading outbound queue\n");
2177 CtdlForEachRoom(network_queue_room, NULL);
2180 if (rplist != NULL) {
2181 CtdlLogPrintf(CTDL_DEBUG, "network: running outbound queue\n");
2182 while (rplist != NULL && !CtdlThreadCheckStop()) {
2183 char spoolroomname[ROOMNAMELEN];
2184 safestrncpy(spoolroomname, rplist->name, sizeof spoolroomname);
2185 begin_critical_section(S_RPLIST);
2187 /* pop this record off the list */
2189 rplist = rplist->next;
2192 /* invalidate any duplicate entries to prevent double processing */
2193 for (ptr=rplist; ptr!=NULL; ptr=ptr->next) {
2194 if (!strcasecmp(ptr->name, spoolroomname)) {
2199 end_critical_section(S_RPLIST);
2200 if (spoolroomname[0] != 0) {
2201 network_spoolout_room(spoolroomname);
2206 /* If there is anything in the inbound queue, process it */
2207 if (!CtdlThreadCheckStop())
2208 network_do_spoolin();
2210 /* Save the network map back to disk */
2211 write_network_map();
2213 /* Free the filter list in memory */
2214 free_filter_list(filterlist);
2217 network_purge_spoolout();
2219 CtdlLogPrintf(CTDL_DEBUG, "network: queue run completed\n");
2221 if (full_processing) {
2222 last_run = time(NULL);
2226 if (!CtdlThreadCheckStop()) // Only reschedule if system is not stopping
2227 CtdlThreadSchedule("IGnet Network", CTDLTHREAD_BIGSTACK, network_do_queue, NULL, time(NULL) + 60);
2229 CtdlLogPrintf(CTDL_DEBUG, "network: Task STOPPED.\n");
2235 * cmd_netp() - authenticate to the server as another Citadel node polling
2236 * for network traffic
2238 void cmd_netp(char *cmdbuf)
2249 extract_token(node, cmdbuf, 0, '|', sizeof node);
2250 extract_token(pass, cmdbuf, 1, '|', sizeof pass);
2253 CtdlLogPrintf(CTDL_WARNING, "Network node <%s> refused - spooling\n", node);
2254 cprintf("%d spooling - try again in a few minutes\n", ERROR + RESOURCE_BUSY);
2258 /* load the IGnet Configuration to check node validity */
2259 load_working_ignetcfg();
2260 v = is_valid_node(nexthop, secret, node);
2263 snprintf(err_buf, sizeof err_buf,
2264 "An unknown Citadel server called \"%s\" attempted to connect from %s [%s].\n",
2265 node, CC->cs_host, CC->cs_addr
2267 CtdlLogPrintf(CTDL_WARNING, err_buf);
2268 cprintf("%d authentication failed\n", ERROR + PASSWORD_REQUIRED);
2269 CtdlAideMessage(err_buf, "IGNet Networking.");
2273 if (strcasecmp(pass, secret)) {
2274 snprintf(err_buf, sizeof err_buf,
2275 "A Citadel server at %s [%s] failed to authenticate as network node \"%s\".\n",
2276 CC->cs_host, CC->cs_addr, node
2278 CtdlLogPrintf(CTDL_WARNING, err_buf);
2279 cprintf("%d authentication failed\n", ERROR + PASSWORD_REQUIRED);
2280 CtdlAideMessage(err_buf, "IGNet Networking.");
2284 if (network_talking_to(node, NTT_CHECK)) {
2285 CtdlLogPrintf(CTDL_WARNING, "Duplicate session for network node <%s>", node);
2286 cprintf("%d Already talking to %s right now\n", ERROR + RESOURCE_BUSY, node);
2290 safestrncpy(CC->net_node, node, sizeof CC->net_node);
2291 network_talking_to(node, NTT_ADD);
2292 CtdlLogPrintf(CTDL_NOTICE, "Network node <%s> logged in from %s [%s]\n",
2293 CC->net_node, CC->cs_host, CC->cs_addr
2295 cprintf("%d authenticated as network node '%s'\n", CIT_OK, CC->net_node);
2299 int network_room_handler (struct ctdlroom *room)
2301 network_queue_room(room, NULL);
2307 * Module entry point
2309 CTDL_MODULE_INIT(network)
2313 create_spool_dirs();
2314 CtdlRegisterProtoHook(cmd_gnet, "GNET", "Get network config");
2315 CtdlRegisterProtoHook(cmd_snet, "SNET", "Set network config");
2316 CtdlRegisterProtoHook(cmd_netp, "NETP", "Identify as network poller");
2317 CtdlRegisterProtoHook(cmd_nsyn, "NSYN", "Synchronize room to node");
2318 CtdlRegisterRoomHook(network_room_handler);
2319 CtdlRegisterCleanupHook(destroy_network_queue_room);
2322 CtdlThreadSchedule("IGnet Network", CTDLTHREAD_BIGSTACK, network_do_queue, NULL, 0);
2323 /* return our Subversion id for the Log */