4 * This module handles shared rooms, inter-Citadel mail, and outbound
5 * mailing list processing.
7 * Copyright (C) 2000-2005 by Art Cancro and others.
8 * This code is released under the terms of the GNU General Public License.
10 * ** NOTE ** A word on the S_NETCONFIGS semaphore:
11 * This is a fairly high-level type of critical section. It ensures that no
12 * two threads work on the netconfigs files at the same time. Since we do
13 * so many things inside these, here are the rules:
14 * 1. begin_critical_section(S_NETCONFIGS) *before* begin_ any others.
15 * 2. Do *not* perform any I/O with the client during these sections.
20 * Duration of time (in seconds) after which pending list subscribe/unsubscribe
21 * requests that have not been confirmed will be deleted.
23 #define EXP 259200 /* three days */
35 #include <sys/types.h>
37 #if TIME_WITH_SYS_TIME
38 # include <sys/time.h>
42 # include <sys/time.h>
53 #include "citserver.h"
62 #include "internet_addressing.h"
63 #include "serv_network.h"
64 #include "clientsocket.h"
66 #include "citadel_dirs.h"
73 #include "ctdl_module.h"
77 /* Nonzero while we are doing network processing */
78 static int doing_queue = 0;
81 * When we do network processing, it's accomplished in two passes; one to
82 * gather a list of rooms and one to actually do them. It's ok that rplist
83 * is global; we have a mutex that keeps it safe.
85 struct RoomProcList *rplist = NULL;
88 * We build a map of network nodes during processing.
90 struct NetMap *the_netmap = NULL;
91 int netmap_changed = 0;
92 char *working_ignetcfg = NULL;
95 * Load or refresh the Citadel network (IGnet) configuration for this node.
97 void load_working_ignetcfg(void) {
101 cfg = CtdlGetSysConfig(IGNETCFG);
106 oldcfg = working_ignetcfg;
107 working_ignetcfg = cfg;
108 if (oldcfg != NULL) {
118 * Keep track of what messages to reject
120 struct FilterList *load_filter_list(void) {
121 char *serialized_list = NULL;
124 struct FilterList *newlist = NULL;
125 struct FilterList *nptr;
127 serialized_list = CtdlGetSysConfig(FILTERLIST);
128 if (serialized_list == NULL) return(NULL); /* if null, no entries */
130 /* Use the string tokenizer to grab one line at a time */
131 for (i=0; i<num_tokens(serialized_list, '\n'); ++i) {
132 extract_token(buf, serialized_list, i, '\n', sizeof buf);
133 nptr = (struct FilterList *) malloc(sizeof(struct FilterList));
134 extract_token(nptr->fl_user, buf, 0, '|', sizeof nptr->fl_user);
135 striplt(nptr->fl_user);
136 extract_token(nptr->fl_room, buf, 1, '|', sizeof nptr->fl_room);
137 striplt(nptr->fl_room);
138 extract_token(nptr->fl_node, buf, 2, '|', sizeof nptr->fl_node);
139 striplt(nptr->fl_node);
141 /* Cowardly refuse to add an any/any/any entry that would
142 * end up filtering every single message.
144 if (IsEmptyStr(nptr->fl_user) &&
145 IsEmptyStr(nptr->fl_room) &&
146 IsEmptyStr(nptr->fl_node)) {
150 nptr->next = newlist;
155 free(serialized_list);
160 void free_filter_list(struct FilterList *fl) {
161 if (fl == NULL) return;
162 free_filter_list(fl->next);
169 * Check the use table. This is a list of messages which have recently
170 * arrived on the system. It is maintained and queried to prevent the same
171 * message from being entered into the database multiple times if it happens
172 * to arrive multiple times by accident.
174 int network_usetable(struct CtdlMessage *msg) {
177 struct cdbdata *cdbut;
180 /* Bail out if we can't generate a message ID */
184 if (msg->cm_fields['I'] == NULL) {
187 if (IsEmptyStr(msg->cm_fields['I'])) {
191 /* Generate the message ID */
192 strcpy(msgid, msg->cm_fields['I']);
193 if (haschar(msgid, '@') == 0) {
195 if (msg->cm_fields['N'] != NULL) {
196 strcat(msgid, msg->cm_fields['N']);
203 cdbut = cdb_fetch(CDB_USETABLE, msgid, strlen(msgid));
209 /* If we got to this point, it's unique: add it. */
210 strcpy(ut.ut_msgid, msgid);
211 ut.ut_timestamp = time(NULL);
212 cdb_store(CDB_USETABLE, msgid, strlen(msgid),
213 &ut, sizeof(struct UseTable) );
219 * Read the network map from its configuration file into memory.
221 void read_network_map(void) {
222 char *serialized_map = NULL;
225 struct NetMap *nmptr;
227 serialized_map = CtdlGetSysConfig(IGNETMAP);
228 if (serialized_map == NULL) return; /* if null, no entries */
230 /* Use the string tokenizer to grab one line at a time */
231 for (i=0; i<num_tokens(serialized_map, '\n'); ++i) {
232 extract_token(buf, serialized_map, i, '\n', sizeof buf);
233 nmptr = (struct NetMap *) malloc(sizeof(struct NetMap));
234 extract_token(nmptr->nodename, buf, 0, '|', sizeof nmptr->nodename);
235 nmptr->lastcontact = extract_long(buf, 1);
236 extract_token(nmptr->nexthop, buf, 2, '|', sizeof nmptr->nexthop);
237 nmptr->next = the_netmap;
241 free(serialized_map);
247 * Write the network map from memory back to the configuration file.
249 void write_network_map(void) {
250 char *serialized_map = NULL;
251 struct NetMap *nmptr;
254 if (netmap_changed) {
255 serialized_map = strdup("");
257 if (the_netmap != NULL) {
258 for (nmptr = the_netmap; nmptr != NULL; nmptr = nmptr->next) {
259 serialized_map = realloc(serialized_map,
260 (strlen(serialized_map)+SIZ) );
261 if (!IsEmptyStr(nmptr->nodename)) {
262 snprintf(&serialized_map[strlen(serialized_map)],
266 (long)nmptr->lastcontact,
272 CtdlPutSysConfig(IGNETMAP, serialized_map);
273 free(serialized_map);
276 /* Now free the list */
277 while (the_netmap != NULL) {
278 nmptr = the_netmap->next;
288 * Check the network map and determine whether the supplied node name is
289 * valid. If it is not a neighbor node, supply the name of a neighbor node
290 * which is the next hop. If it *is* a neighbor node, we also fill in the
293 int is_valid_node(char *nexthop, char *secret, char *node) {
298 struct NetMap *nmptr;
305 * First try the neighbor nodes
307 if (working_ignetcfg == NULL) {
308 lprintf(CTDL_ERR, "working_ignetcfg is NULL!\n");
309 if (nexthop != NULL) {
316 if (nexthop != NULL) {
320 /* Use the string tokenizer to grab one line at a time */
321 for (i=0; i<num_tokens(working_ignetcfg, '\n'); ++i) {
322 extract_token(linebuf, working_ignetcfg, i, '\n', sizeof linebuf);
323 extract_token(buf, linebuf, 0, '|', sizeof buf);
324 if (!strcasecmp(buf, node)) {
325 if (nexthop != NULL) {
328 if (secret != NULL) {
329 extract_token(secret, linebuf, 1, '|', 256);
336 return(retval); /* yup, it's a direct neighbor */
340 * If we get to this point we have to see if we know the next hop
342 if (the_netmap != NULL) {
343 for (nmptr = the_netmap; nmptr != NULL; nmptr = nmptr->next) {
344 if (!strcasecmp(nmptr->nodename, node)) {
345 if (nexthop != NULL) {
346 strcpy(nexthop, nmptr->nexthop);
354 * If we get to this point, the supplied node name is bogus.
356 lprintf(CTDL_ERR, "Invalid node name <%s>\n", node);
364 void cmd_gnet(char *argbuf) {
369 if ( (CC->room.QRflags & QR_MAILBOX) && (CC->user.usernum == atol(CC->room.QRname)) ) {
370 /* users can edit the netconfigs for their own mailbox rooms */
372 else if (CtdlAccessCheck(ac_room_aide)) return;
374 assoc_file_name(filename, sizeof filename, &CC->room, ctdl_netcfg_dir);
375 cprintf("%d Network settings for room #%ld <%s>\n",
377 CC->room.QRnumber, CC->room.QRname);
379 fp = fopen(filename, "r");
381 while (fgets(buf, sizeof buf, fp) != NULL) {
382 buf[strlen(buf)-1] = 0;
383 cprintf("%s\n", buf);
392 void cmd_snet(char *argbuf) {
393 char tempfilename[SIZ];
400 if ( (CC->room.QRflags & QR_MAILBOX) && (CC->user.usernum == atol(CC->room.QRname)) ) {
401 /* users can edit the netconfigs for their own mailbox rooms */
403 else if (CtdlAccessCheck(ac_room_aide)) return;
405 CtdlMakeTempFileName(tempfilename, sizeof tempfilename);
406 assoc_file_name(filename, sizeof filename, &CC->room, ctdl_netcfg_dir);
408 fp = fopen(tempfilename, "w");
410 cprintf("%d Cannot open %s: %s\n",
411 ERROR + INTERNAL_ERROR,
416 cprintf("%d %s\n", SEND_LISTING, tempfilename);
417 while (client_getln(buf, sizeof buf), strcmp(buf, "000")) {
418 fprintf(fp, "%s\n", buf);
422 /* Now copy the temp file to its permanent location.
423 * (We copy instead of link because they may be on different filesystems)
425 begin_critical_section(S_NETCONFIGS);
426 fp = fopen(tempfilename, "r");
428 newfp = fopen(filename, "w");
430 while (fgets(buf, sizeof buf, fp) != NULL) {
431 fprintf(newfp, "%s", buf);
437 end_critical_section(S_NETCONFIGS);
438 unlink(tempfilename);
443 * Deliver digest messages
445 void network_deliver_digest(struct SpoolControl *sc) {
448 struct CtdlMessage *msg = NULL;
451 size_t recps_len = SIZ;
452 struct recptypes *valid;
453 struct namelist *nptr;
455 if (sc->num_msgs_spooled < 1) {
456 fclose(sc->digestfp);
461 msg = malloc(sizeof(struct CtdlMessage));
462 memset(msg, 0, sizeof(struct CtdlMessage));
463 msg->cm_magic = CTDLMESSAGE_MAGIC;
464 msg->cm_format_type = FMT_RFC822;
465 msg->cm_anon_type = MES_NORMAL;
467 sprintf(buf, "%ld", time(NULL));
468 msg->cm_fields['T'] = strdup(buf);
469 msg->cm_fields['A'] = strdup(CC->room.QRname);
470 snprintf(buf, sizeof buf, "[%s]", CC->room.QRname);
471 msg->cm_fields['U'] = strdup(buf);
472 sprintf(buf, "room_%s@%s", CC->room.QRname, config.c_fqdn);
473 for (i=0; buf[i]; ++i) {
474 if (isspace(buf[i])) buf[i]='_';
475 buf[i] = tolower(buf[i]);
477 msg->cm_fields['F'] = strdup(buf);
478 msg->cm_fields['R'] = strdup(buf);
481 * Go fetch the contents of the digest
483 fseek(sc->digestfp, 0L, SEEK_END);
484 msglen = ftell(sc->digestfp);
486 msg->cm_fields['M'] = malloc(msglen + 1);
487 fseek(sc->digestfp, 0L, SEEK_SET);
488 fread(msg->cm_fields['M'], (size_t)msglen, 1, sc->digestfp);
489 msg->cm_fields['M'][msglen] = 0;
491 fclose(sc->digestfp);
494 /* Now generate the delivery instructions */
497 * Figure out how big a buffer we need to allocate
499 for (nptr = sc->digestrecps; nptr != NULL; nptr = nptr->next) {
500 recps_len = recps_len + strlen(nptr->name) + 2;
503 recps = malloc(recps_len);
506 lprintf(CTDL_EMERG, "Cannot allocate %ld bytes for recps...\n", (long)recps_len);
513 for (nptr = sc->digestrecps; nptr != NULL; nptr = nptr->next) {
514 if (nptr != sc->digestrecps) {
517 strcat(recps, nptr->name);
520 /* Now submit the message */
521 valid = validate_recipients(recps);
523 CtdlSubmitMsg(msg, valid, NULL);
524 CtdlFreeMessage(msg);
525 free_recipients(valid);
530 * Deliver list messages to everyone on the list ... efficiently
532 void network_deliver_list(struct CtdlMessage *msg, struct SpoolControl *sc) {
534 size_t recps_len = SIZ;
535 struct recptypes *valid;
536 struct namelist *nptr;
538 /* Don't do this if there were no recipients! */
539 if (sc->listrecps == NULL) return;
541 /* Now generate the delivery instructions */
544 * Figure out how big a buffer we need to allocate
546 for (nptr = sc->listrecps; nptr != NULL; nptr = nptr->next) {
547 recps_len = recps_len + strlen(nptr->name) + 2;
550 recps = malloc(recps_len);
553 lprintf(CTDL_EMERG, "Cannot allocate %ld bytes for recps...\n", (long)recps_len);
560 for (nptr = sc->listrecps; nptr != NULL; nptr = nptr->next) {
561 if (nptr != sc->listrecps) {
564 strcat(recps, nptr->name);
567 /* Now submit the message */
568 valid = validate_recipients(recps);
570 CtdlSubmitMsg(msg, valid, NULL);
571 free_recipients(valid);
572 /* Do not call CtdlFreeMessage(msg) here; the caller will free it. */
579 * Spools out one message from the list.
581 void network_spool_msg(long msgnum, void *userdata) {
582 struct SpoolControl *sc;
584 char *newpath = NULL;
585 size_t instr_len = SIZ;
586 struct CtdlMessage *msg = NULL;
587 struct namelist *nptr;
588 struct maplist *mptr;
589 struct ser_ret sermsg;
595 int delete_after_send = 0; /* Set to 1 to delete after spooling */
596 int ok_to_participate = 0;
597 struct recptypes *valid;
599 sc = (struct SpoolControl *)userdata;
602 * Process mailing list recipients
605 if (sc->listrecps != NULL) {
606 /* Fetch the message. We're going to need to modify it
607 * in order to insert the [list name] in it, etc.
609 msg = CtdlFetchMessage(msgnum, 1);
612 /* Prepend "[List name]" to the subject */
613 if (msg->cm_fields['U'] == NULL) {
614 msg->cm_fields['U'] = strdup("(no subject)");
616 snprintf(buf, sizeof buf, "[%s] %s", CC->room.QRname, msg->cm_fields['U']);
617 free(msg->cm_fields['U']);
618 msg->cm_fields['U'] = strdup(buf);
620 /* Set the recipient of the list message to the
621 * email address of the room itself.
622 * FIXME ... I want to be able to pick any address
624 if (msg->cm_fields['R'] != NULL) {
625 free(msg->cm_fields['R']);
627 msg->cm_fields['R'] = malloc(256);
628 snprintf(msg->cm_fields['R'], 256,
629 "room_%s@%s", CC->room.QRname,
631 for (i=0; msg->cm_fields['R'][i]; ++i) {
632 if (isspace(msg->cm_fields['R'][i])) {
633 msg->cm_fields['R'][i] = '_';
637 /* Handle delivery */
638 network_deliver_list(msg, sc);
639 CtdlFreeMessage(msg);
644 * Process digest recipients
646 if ((sc->digestrecps != NULL) && (sc->digestfp != NULL)) {
647 msg = CtdlFetchMessage(msgnum, 1);
649 fprintf(sc->digestfp, " -----------------------------------"
650 "------------------------------------"
652 fprintf(sc->digestfp, "From: ");
653 if (msg->cm_fields['A'] != NULL) {
654 fprintf(sc->digestfp, "%s ", msg->cm_fields['A']);
656 if (msg->cm_fields['F'] != NULL) {
657 fprintf(sc->digestfp, "<%s> ", msg->cm_fields['F']);
659 else if (msg->cm_fields['N'] != NULL) {
660 fprintf(sc->digestfp, "@%s ", msg->cm_fields['N']);
662 fprintf(sc->digestfp, "\n");
663 if (msg->cm_fields['U'] != NULL) {
664 fprintf(sc->digestfp, "Subject: %s\n", msg->cm_fields['U']);
667 CC->redirect_buffer = malloc(SIZ);
668 CC->redirect_len = 0;
669 CC->redirect_alloc = SIZ;
671 safestrncpy(CC->preferred_formats, "text/plain", sizeof CC->preferred_formats);
672 CtdlOutputPreLoadedMsg(msg, MT_CITADEL, HEADERS_NONE, 0, 0);
674 striplt(CC->redirect_buffer);
675 fprintf(sc->digestfp, "\n%s\n", CC->redirect_buffer);
677 free(CC->redirect_buffer);
678 CC->redirect_buffer = NULL;
679 CC->redirect_len = 0;
680 CC->redirect_alloc = 0;
682 sc->num_msgs_spooled += 1;
688 * Process client-side list participations for this room
691 if (sc->participates != NULL) {
692 msg = CtdlFetchMessage(msgnum, 1);
695 /* Only send messages which originated on our own Citadel
696 * network, otherwise we'll end up sending the remote
697 * mailing list's messages back to it, which is rude...
699 ok_to_participate = 0;
700 if (msg->cm_fields['N'] != NULL) {
701 if (!strcasecmp(msg->cm_fields['N'], config.c_nodename)) {
702 ok_to_participate = 1;
704 if (is_valid_node(NULL, NULL, msg->cm_fields['N']) == 0) {
705 ok_to_participate = 1;
708 if (ok_to_participate) {
709 if (msg->cm_fields['F'] != NULL) {
710 free(msg->cm_fields['F']);
712 msg->cm_fields['F'] = malloc(SIZ);
713 /* Replace the Internet email address of the actual
714 * author with the email address of the room itself,
715 * so the remote listserv doesn't reject us.
716 * FIXME ... I want to be able to pick any address
718 snprintf(msg->cm_fields['F'], SIZ,
719 "room_%s@%s", CC->room.QRname,
721 for (i=0; msg->cm_fields['F'][i]; ++i) {
722 if (isspace(msg->cm_fields['F'][i])) {
723 msg->cm_fields['F'][i] = '_';
728 * Figure out how big a buffer we need to allocate
730 for (nptr = sc->participates; nptr != NULL; nptr = nptr->next) {
732 if (msg->cm_fields['R'] == NULL) {
733 free(msg->cm_fields['R']);
735 msg->cm_fields['R'] = strdup(nptr->name);
737 valid = validate_recipients(nptr->name);
738 CtdlSubmitMsg(msg, valid, "");
739 free_recipients(valid);
743 CtdlFreeMessage(msg);
748 * Process IGnet push shares
750 msg = CtdlFetchMessage(msgnum, 1);
754 /* Prepend our node name to the Path field whenever
755 * sending a message to another IGnet node
757 if (msg->cm_fields['P'] == NULL) {
758 msg->cm_fields['P'] = strdup("username");
760 newpath_len = strlen(msg->cm_fields['P']) +
761 strlen(config.c_nodename) + 2;
762 newpath = malloc(newpath_len);
763 snprintf(newpath, newpath_len, "%s!%s",
764 config.c_nodename, msg->cm_fields['P']);
765 free(msg->cm_fields['P']);
766 msg->cm_fields['P'] = newpath;
769 * Determine if this message is set to be deleted
770 * after sending out on the network
772 if (msg->cm_fields['S'] != NULL) {
773 if (!strcasecmp(msg->cm_fields['S'], "CANCEL")) {
774 delete_after_send = 1;
778 /* Now send it to every node */
779 if (sc->ignet_push_shares != NULL)
780 for (mptr = sc->ignet_push_shares; mptr != NULL;
785 /* Check for valid node name */
786 if (is_valid_node(NULL, NULL, mptr->remote_nodename) != 0) {
787 lprintf(CTDL_ERR, "Invalid node <%s>\n",
788 mptr->remote_nodename);
792 /* Check for split horizon */
793 lprintf(CTDL_DEBUG, "Path is %s\n", msg->cm_fields['P']);
794 bang = num_tokens(msg->cm_fields['P'], '!');
795 if (bang > 1) for (i=0; i<(bang-1); ++i) {
796 extract_token(buf, msg->cm_fields['P'],
798 if (!strcasecmp(buf, mptr->remote_nodename)) {
803 /* Send the message */
807 * Force the message to appear in the correct room
808 * on the far end by setting the C field correctly
810 if (msg->cm_fields['C'] != NULL) {
811 free(msg->cm_fields['C']);
813 if (!IsEmptyStr(mptr->remote_roomname)) {
814 msg->cm_fields['C'] = strdup(mptr->remote_roomname);
817 msg->cm_fields['C'] = strdup(CC->room.QRname);
820 /* serialize it for transmission */
821 serialize_message(&sermsg, msg);
822 if (sermsg.len > 0) {
824 /* write it to the spool file */
825 snprintf(filename, sizeof filename,"%s/%s",
827 mptr->remote_nodename);
828 lprintf(CTDL_DEBUG, "Appending to %s\n", filename);
829 fp = fopen(filename, "ab");
836 lprintf(CTDL_ERR, "%s: %s\n", filename, strerror(errno));
839 /* free the serialized version */
845 CtdlFreeMessage(msg);
848 /* update lastsent */
849 sc->lastsent = msgnum;
851 /* Delete this message if delete-after-send is set */
852 if (delete_after_send) {
853 CtdlDeleteMessages(CC->room.QRname, &msgnum, 1, "");
860 * Batch up and send all outbound traffic from the current room
862 void network_spoolout_room(char *room_to_spool) {
867 char roomname[ROOMNAMELEN];
870 struct SpoolControl sc;
871 struct namelist *nptr = NULL;
872 struct maplist *mptr = NULL;
875 int skipthisline = 0;
879 * If the room doesn't exist, don't try to perform its networking tasks.
880 * Normally this should never happen, but once in a while maybe a room gets
881 * queued for networking and then deleted before it can happen.
883 if (getroom(&CC->room, room_to_spool) != 0) {
884 lprintf(CTDL_CRIT, "ERROR: cannot load <%s>\n", room_to_spool);
888 memset(&sc, 0, sizeof(struct SpoolControl));
889 assoc_file_name(filename, sizeof filename, &CC->room, ctdl_netcfg_dir);
891 begin_critical_section(S_NETCONFIGS);
893 /* Only do net processing for rooms that have netconfigs */
894 fp = fopen(filename, "r");
896 end_critical_section(S_NETCONFIGS);
900 lprintf(CTDL_INFO, "Networking started for <%s>\n", CC->room.QRname);
902 while (fgets(buf, sizeof buf, fp) != NULL) {
903 buf[strlen(buf)-1] = 0;
905 extract_token(instr, buf, 0, '|', sizeof instr);
906 if (!strcasecmp(instr, "lastsent")) {
907 sc.lastsent = extract_long(buf, 1);
909 else if (!strcasecmp(instr, "listrecp")) {
910 nptr = (struct namelist *)
911 malloc(sizeof(struct namelist));
912 nptr->next = sc.listrecps;
913 extract_token(nptr->name, buf, 1, '|', sizeof nptr->name);
916 else if (!strcasecmp(instr, "participate")) {
917 nptr = (struct namelist *)
918 malloc(sizeof(struct namelist));
919 nptr->next = sc.participates;
920 extract_token(nptr->name, buf, 1, '|', sizeof nptr->name);
921 sc.participates = nptr;
923 else if (!strcasecmp(instr, "digestrecp")) {
924 nptr = (struct namelist *)
925 malloc(sizeof(struct namelist));
926 nptr->next = sc.digestrecps;
927 extract_token(nptr->name, buf, 1, '|', sizeof nptr->name);
928 sc.digestrecps = nptr;
930 else if (!strcasecmp(instr, "ignet_push_share")) {
931 /* by checking each node's validity, we automatically
932 * purge nodes which do not exist from room network
933 * configurations at this time.
935 extract_token(nodename, buf, 1, '|', sizeof nodename);
936 extract_token(roomname, buf, 2, '|', sizeof roomname);
937 strcpy(nexthop, "xxx");
938 if (is_valid_node(nexthop, NULL, nodename) == 0) {
939 if (IsEmptyStr(nexthop)) {
940 mptr = (struct maplist *)
941 malloc(sizeof(struct maplist));
942 mptr->next = sc.ignet_push_shares;
943 strcpy(mptr->remote_nodename, nodename);
944 strcpy(mptr->remote_roomname, roomname);
945 sc.ignet_push_shares = mptr;
950 /* Preserve 'other' lines ... *unless* they happen to
951 * be subscribe/unsubscribe pendings with expired
955 if (!strncasecmp(buf, "subpending|", 11)) {
956 if (time(NULL) - extract_long(buf, 4) > EXP) {
960 if (!strncasecmp(buf, "unsubpending|", 13)) {
961 if (time(NULL) - extract_long(buf, 3) > EXP) {
966 if (skipthisline == 0) {
967 linesize = strlen(buf);
968 sc.misc = realloc(sc.misc,
969 (miscsize + linesize + 2) );
970 sprintf(&sc.misc[miscsize], "%s\n", buf);
971 miscsize = miscsize + linesize + 1;
979 /* If there are digest recipients, we have to build a digest */
980 if (sc.digestrecps != NULL) {
981 sc.digestfp = tmpfile();
982 fprintf(sc.digestfp, "Content-type: text/plain\n\n");
985 /* Do something useful */
986 CtdlForEachMessage(MSGS_GT, sc.lastsent, NULL, NULL, NULL,
987 network_spool_msg, &sc);
989 /* If we wrote a digest, deliver it and then close it */
990 snprintf(buf, sizeof buf, "room_%s@%s",
991 CC->room.QRname, config.c_fqdn);
992 for (i=0; buf[i]; ++i) {
993 buf[i] = tolower(buf[i]);
994 if (isspace(buf[i])) buf[i] = '_';
996 if (sc.digestfp != NULL) {
997 fprintf(sc.digestfp, " -----------------------------------"
998 "------------------------------------"
1000 "You are subscribed to the '%s' "
1002 "To post to the list: %s\n",
1003 CC->room.QRname, buf
1005 network_deliver_digest(&sc); /* deliver and close */
1008 /* Now rewrite the config file */
1009 fp = fopen(filename, "w");
1011 lprintf(CTDL_CRIT, "ERROR: cannot open %s: %s\n",
1012 filename, strerror(errno));
1015 fprintf(fp, "lastsent|%ld\n", sc.lastsent);
1017 /* Write out the listrecps while freeing from memory at the
1018 * same time. Am I clever or what? :)
1020 while (sc.listrecps != NULL) {
1021 fprintf(fp, "listrecp|%s\n", sc.listrecps->name);
1022 nptr = sc.listrecps->next;
1024 sc.listrecps = nptr;
1026 /* Do the same for digestrecps */
1027 while (sc.digestrecps != NULL) {
1028 fprintf(fp, "digestrecp|%s\n", sc.digestrecps->name);
1029 nptr = sc.digestrecps->next;
1030 free(sc.digestrecps);
1031 sc.digestrecps = nptr;
1033 /* Do the same for participates */
1034 while (sc.participates != NULL) {
1035 fprintf(fp, "participate|%s\n", sc.participates->name);
1036 nptr = sc.participates->next;
1037 free(sc.participates);
1038 sc.participates = nptr;
1040 while (sc.ignet_push_shares != NULL) {
1041 /* by checking each node's validity, we automatically
1042 * purge nodes which do not exist from room network
1043 * configurations at this time.
1045 if (is_valid_node(NULL, NULL, sc.ignet_push_shares->remote_nodename) == 0) {
1047 fprintf(fp, "ignet_push_share|%s",
1048 sc.ignet_push_shares->remote_nodename);
1049 if (!IsEmptyStr(sc.ignet_push_shares->remote_roomname)) {
1050 fprintf(fp, "|%s", sc.ignet_push_shares->remote_roomname);
1053 mptr = sc.ignet_push_shares->next;
1054 free(sc.ignet_push_shares);
1055 sc.ignet_push_shares = mptr;
1057 if (sc.misc != NULL) {
1058 fwrite(sc.misc, strlen(sc.misc), 1, fp);
1064 end_critical_section(S_NETCONFIGS);
1070 * Send the *entire* contents of the current room to one specific network node,
1071 * ignoring anything we know about which messages have already undergone
1072 * network processing. This can be used to bring a new node into sync.
1074 int network_sync_to(char *target_node) {
1075 struct SpoolControl sc;
1076 int num_spooled = 0;
1085 /* Grab the configuration line we're looking for */
1086 assoc_file_name(filename, sizeof filename, &CC->room, ctdl_netcfg_dir);
1087 begin_critical_section(S_NETCONFIGS);
1088 fp = fopen(filename, "r");
1090 end_critical_section(S_NETCONFIGS);
1093 while (fgets(buf, sizeof buf, fp) != NULL) {
1094 buf[strlen(buf)-1] = 0;
1095 extract_token(sc_type, buf, 0, '|', sizeof sc_type);
1096 extract_token(sc_node, buf, 1, '|', sizeof sc_node);
1097 extract_token(sc_room, buf, 2, '|', sizeof sc_room);
1098 if ( (!strcasecmp(sc_type, "ignet_push_share"))
1099 && (!strcasecmp(sc_node, target_node)) ) {
1102 /* Concise syntax because we don't need a full linked-list */
1103 memset(&sc, 0, sizeof(struct SpoolControl));
1104 sc.ignet_push_shares = (struct maplist *)
1105 malloc(sizeof(struct maplist));
1106 sc.ignet_push_shares->next = NULL;
1107 safestrncpy(sc.ignet_push_shares->remote_nodename,
1109 sizeof sc.ignet_push_shares->remote_nodename);
1110 safestrncpy(sc.ignet_push_shares->remote_roomname,
1112 sizeof sc.ignet_push_shares->remote_roomname);
1116 end_critical_section(S_NETCONFIGS);
1118 if (!found_node) return(-1);
1120 /* Send ALL messages */
1121 num_spooled = CtdlForEachMessage(MSGS_ALL, 0L, NULL, NULL, NULL,
1122 network_spool_msg, &sc);
1124 /* Concise cleanup because we know there's only one node in the sc */
1125 free(sc.ignet_push_shares);
1127 lprintf(CTDL_NOTICE, "Synchronized %d messages to <%s>\n",
1128 num_spooled, target_node);
1129 return(num_spooled);
1134 * Implements the NSYN command
1136 void cmd_nsyn(char *argbuf) {
1138 char target_node[256];
1140 if (CtdlAccessCheck(ac_aide)) return;
1142 extract_token(target_node, argbuf, 0, '|', sizeof target_node);
1143 num_spooled = network_sync_to(target_node);
1144 if (num_spooled >= 0) {
1145 cprintf("%d Spooled %d messages.\n", CIT_OK, num_spooled);
1148 cprintf("%d No such room/node share exists.\n",
1149 ERROR + ROOM_NOT_FOUND);
1156 * Batch up and send all outbound traffic from the current room
1158 void network_queue_room(struct ctdlroom *qrbuf, void *data) {
1159 struct RoomProcList *ptr;
1161 ptr = (struct RoomProcList *) malloc(sizeof (struct RoomProcList));
1162 if (ptr == NULL) return;
1164 safestrncpy(ptr->name, qrbuf->QRname, sizeof ptr->name);
1165 begin_critical_section(S_RPLIST);
1168 end_critical_section(S_RPLIST);
1171 void destroy_network_queue_room(void)
1173 struct RoomProcList *cur, *p;
1174 struct NetMap *nmcur, *nmp;
1177 begin_critical_section(S_RPLIST);
1185 end_critical_section(S_RPLIST);
1188 while (nmcur != NULL)
1195 if (working_ignetcfg != NULL)
1196 free (working_ignetcfg);
1197 working_ignetcfg = NULL;
1202 * Learn topology from path fields
1204 void network_learn_topology(char *node, char *path) {
1206 struct NetMap *nmptr;
1208 strcpy(nexthop, "");
1210 if (num_tokens(path, '!') < 3) return;
1211 for (nmptr = the_netmap; nmptr != NULL; nmptr = nmptr->next) {
1212 if (!strcasecmp(nmptr->nodename, node)) {
1213 extract_token(nmptr->nexthop, path, 0, '!', sizeof nmptr->nexthop);
1214 nmptr->lastcontact = time(NULL);
1220 /* If we got here then it's not in the map, so add it. */
1221 nmptr = (struct NetMap *) malloc(sizeof (struct NetMap));
1222 strcpy(nmptr->nodename, node);
1223 nmptr->lastcontact = time(NULL);
1224 extract_token(nmptr->nexthop, path, 0, '!', sizeof nmptr->nexthop);
1225 nmptr->next = the_netmap;
1234 * Bounce a message back to the sender
1236 void network_bounce(struct CtdlMessage *msg, char *reason) {
1237 char *oldpath = NULL;
1239 char bouncesource[SIZ];
1240 char recipient[SIZ];
1241 struct recptypes *valid = NULL;
1242 char force_room[ROOMNAMELEN];
1243 static int serialnum = 0;
1246 lprintf(CTDL_DEBUG, "entering network_bounce()\n");
1248 if (msg == NULL) return;
1250 snprintf(bouncesource, sizeof bouncesource, "%s@%s", BOUNCESOURCE, config.c_nodename);
1253 * Give it a fresh message ID
1255 if (msg->cm_fields['I'] != NULL) {
1256 free(msg->cm_fields['I']);
1258 snprintf(buf, sizeof buf, "%ld.%04lx.%04x@%s",
1259 (long)time(NULL), (long)getpid(), ++serialnum, config.c_fqdn);
1260 msg->cm_fields['I'] = strdup(buf);
1263 * FIXME ... right now we're just sending a bounce; we really want to
1264 * include the text of the bounced message.
1266 if (msg->cm_fields['M'] != NULL) {
1267 free(msg->cm_fields['M']);
1269 msg->cm_fields['M'] = strdup(reason);
1270 msg->cm_format_type = 0;
1273 * Turn the message around
1275 if (msg->cm_fields['R'] == NULL) {
1276 free(msg->cm_fields['R']);
1279 if (msg->cm_fields['D'] == NULL) {
1280 free(msg->cm_fields['D']);
1283 snprintf(recipient, sizeof recipient, "%s@%s",
1284 msg->cm_fields['A'], msg->cm_fields['N']);
1286 if (msg->cm_fields['A'] == NULL) {
1287 free(msg->cm_fields['A']);
1290 if (msg->cm_fields['N'] == NULL) {
1291 free(msg->cm_fields['N']);
1294 if (msg->cm_fields['U'] == NULL) {
1295 free(msg->cm_fields['U']);
1298 msg->cm_fields['A'] = strdup(BOUNCESOURCE);
1299 msg->cm_fields['N'] = strdup(config.c_nodename);
1300 msg->cm_fields['U'] = strdup("Delivery Status Notification (Failure)");
1302 /* prepend our node to the path */
1303 if (msg->cm_fields['P'] != NULL) {
1304 oldpath = msg->cm_fields['P'];
1305 msg->cm_fields['P'] = NULL;
1308 oldpath = strdup("unknown_user");
1310 size = strlen(oldpath) + SIZ;
1311 msg->cm_fields['P'] = malloc(size);
1312 snprintf(msg->cm_fields['P'], size, "%s!%s", config.c_nodename, oldpath);
1315 /* Now submit the message */
1316 valid = validate_recipients(recipient);
1317 if (valid != NULL) if (valid->num_error != 0) {
1318 free_recipients(valid);
1321 if ( (valid == NULL) || (!strcasecmp(recipient, bouncesource)) ) {
1322 strcpy(force_room, config.c_aideroom);
1325 strcpy(force_room, "");
1327 if ( (valid == NULL) && IsEmptyStr(force_room) ) {
1328 strcpy(force_room, config.c_aideroom);
1330 CtdlSubmitMsg(msg, valid, force_room);
1333 if (valid != NULL) free_recipients(valid);
1334 CtdlFreeMessage(msg);
1335 lprintf(CTDL_DEBUG, "leaving network_bounce()\n");
1342 * Process a buffer containing a single message from a single file
1343 * from the inbound queue
1345 void network_process_buffer(char *buffer, long size) {
1346 struct CtdlMessage *msg = NULL;
1349 struct recptypes *recp = NULL;
1350 char target_room[ROOMNAMELEN];
1351 struct ser_ret sermsg;
1352 char *oldpath = NULL;
1356 unsigned char firstbyte;
1357 unsigned char lastbyte;
1359 /* Validate just a little bit. First byte should be FF and
1360 * last byte should be 00.
1362 memcpy(&firstbyte, &buffer[0], 1);
1363 memcpy(&lastbyte, &buffer[size-1], 1);
1364 if ( (firstbyte != 255) || (lastbyte != 0) ) {
1365 lprintf(CTDL_ERR, "Corrupt message! Ignoring.\n");
1369 /* Set default target room to trash */
1370 strcpy(target_room, TWITROOM);
1372 /* Load the message into memory */
1373 msg = (struct CtdlMessage *) malloc(sizeof(struct CtdlMessage));
1374 memset(msg, 0, sizeof(struct CtdlMessage));
1375 msg->cm_magic = CTDLMESSAGE_MAGIC;
1376 msg->cm_anon_type = buffer[1];
1377 msg->cm_format_type = buffer[2];
1379 for (pos = 3; pos < size; ++pos) {
1380 field = buffer[pos];
1381 msg->cm_fields[field] = strdup(&buffer[pos+1]);
1382 pos = pos + strlen(&buffer[(int)pos]);
1385 /* Check for message routing */
1386 if (msg->cm_fields['D'] != NULL) {
1387 if (strcasecmp(msg->cm_fields['D'], config.c_nodename)) {
1389 /* route the message */
1390 strcpy(nexthop, "");
1391 if (is_valid_node(nexthop, NULL,
1392 msg->cm_fields['D']) == 0) {
1394 /* prepend our node to the path */
1395 if (msg->cm_fields['P'] != NULL) {
1396 oldpath = msg->cm_fields['P'];
1397 msg->cm_fields['P'] = NULL;
1400 oldpath = strdup("unknown_user");
1402 size = strlen(oldpath) + SIZ;
1403 msg->cm_fields['P'] = malloc(size);
1404 snprintf(msg->cm_fields['P'], size, "%s!%s",
1405 config.c_nodename, oldpath);
1408 /* serialize the message */
1409 serialize_message(&sermsg, msg);
1412 if (IsEmptyStr(nexthop)) {
1413 strcpy(nexthop, msg->cm_fields['D']);
1420 lprintf(CTDL_DEBUG, "Appending to %s\n", filename);
1421 fp = fopen(filename, "ab");
1428 lprintf(CTDL_ERR, "%s: %s\n", filename, strerror(errno));
1431 CtdlFreeMessage(msg);
1435 else { /* invalid destination node name */
1438 "A message you sent could not be delivered due to an invalid destination node"
1439 " name. Please check the address and try sending the message again.\n");
1448 * Check to see if we already have a copy of this message, and
1449 * abort its processing if so. (We used to post a warning to Aide>
1450 * every time this happened, but the network is now so densely
1451 * connected that it's inevitable.)
1453 if (network_usetable(msg) != 0) {
1454 CtdlFreeMessage(msg);
1458 /* Learn network topology from the path */
1459 if ((msg->cm_fields['N'] != NULL) && (msg->cm_fields['P'] != NULL)) {
1460 network_learn_topology(msg->cm_fields['N'],
1461 msg->cm_fields['P']);
1464 /* Is the sending node giving us a very persuasive suggestion about
1465 * which room this message should be saved in? If so, go with that.
1467 if (msg->cm_fields['C'] != NULL) {
1468 safestrncpy(target_room,
1469 msg->cm_fields['C'],
1470 sizeof target_room);
1473 /* Otherwise, does it have a recipient? If so, validate it... */
1474 else if (msg->cm_fields['R'] != NULL) {
1475 recp = validate_recipients(msg->cm_fields['R']);
1476 if (recp != NULL) if (recp->num_error != 0) {
1478 "A message you sent could not be delivered due to an invalid address.\n"
1479 "Please check the address and try sending the message again.\n");
1481 free_recipients(recp);
1484 strcpy(target_room, ""); /* no target room if mail */
1487 /* Our last shot at finding a home for this message is to see if
1488 * it has the O field (Originating room) set.
1490 else if (msg->cm_fields['O'] != NULL) {
1491 safestrncpy(target_room,
1492 msg->cm_fields['O'],
1493 sizeof target_room);
1496 /* Strip out fields that are only relevant during transit */
1497 if (msg->cm_fields['D'] != NULL) {
1498 free(msg->cm_fields['D']);
1499 msg->cm_fields['D'] = NULL;
1501 if (msg->cm_fields['C'] != NULL) {
1502 free(msg->cm_fields['C']);
1503 msg->cm_fields['C'] = NULL;
1506 /* save the message into a room */
1507 if (PerformNetprocHooks(msg, target_room) == 0) {
1508 msg->cm_flags = CM_SKIP_HOOKS;
1509 CtdlSubmitMsg(msg, recp, target_room);
1511 CtdlFreeMessage(msg);
1512 free_recipients(recp);
1517 * Process a single message from a single file from the inbound queue
1519 void network_process_message(FILE *fp, long msgstart, long msgend) {
1524 hold_pos = ftell(fp);
1525 size = msgend - msgstart + 1;
1526 buffer = malloc(size);
1527 if (buffer != NULL) {
1528 fseek(fp, msgstart, SEEK_SET);
1529 fread(buffer, size, 1, fp);
1530 network_process_buffer(buffer, size);
1534 fseek(fp, hold_pos, SEEK_SET);
1539 * Process a single file from the inbound queue
1541 void network_process_file(char *filename) {
1543 long msgstart = (-1L);
1544 long msgend = (-1L);
1549 fp = fopen(filename, "rb");
1551 lprintf(CTDL_CRIT, "Error opening %s: %s\n",
1552 filename, strerror(errno));
1556 lprintf(CTDL_INFO, "network: processing <%s>\n", filename);
1558 /* Look for messages in the data stream and break them out */
1559 while (ch = getc(fp), ch >= 0) {
1562 if (msgstart >= 0L) {
1563 msgend = msgcur - 1;
1564 network_process_message(fp, msgstart, msgend);
1572 msgend = msgcur - 1;
1573 if (msgstart >= 0L) {
1574 network_process_message(fp, msgstart, msgend);
1583 * Process anything in the inbound queue
1585 void network_do_spoolin(void) {
1588 struct stat statbuf;
1590 static time_t last_spoolin_mtime = 0L;
1593 * Check the spoolin directory's modification time. If it hasn't
1594 * been touched, we don't need to scan it.
1596 if (stat(ctdl_netin_dir, &statbuf)) return;
1597 if (statbuf.st_mtime == last_spoolin_mtime) {
1598 lprintf(CTDL_DEBUG, "network: nothing in inbound queue\n");
1601 last_spoolin_mtime = statbuf.st_mtime;
1602 lprintf(CTDL_DEBUG, "network: processing inbound queue\n");
1605 * Ok, there's something interesting in there, so scan it.
1607 dp = opendir(ctdl_netin_dir);
1608 if (dp == NULL) return;
1610 while (d = readdir(dp), d != NULL) {
1611 if ((strcmp(d->d_name, ".")) && (strcmp(d->d_name, ".."))) {
1617 network_process_file(filename);
1625 * Delete any files in the outbound queue that were intended
1626 * to be sent to nodes which no longer exist.
1628 void network_purge_spoolout(void) {
1635 dp = opendir(ctdl_netout_dir);
1636 if (dp == NULL) return;
1638 while (d = readdir(dp), d != NULL) {
1639 if (!strcmp(d->d_name, ".") || !strcmp(d->d_name, ".."))
1647 strcpy(nexthop, "");
1648 i = is_valid_node(nexthop, NULL, d->d_name);
1650 if ( (i != 0) || !IsEmptyStr(nexthop) ) {
1661 * receive network spool from the remote system
1663 void receive_spool(int sock, char *remote_nodename) {
1665 long bytes_received;
1667 static char pbuf[IGNET_PACKET_SIZE];
1668 char tempfilename[PATH_MAX];
1669 char filename[PATH_MAX];
1673 CtdlMakeTempFileName(tempfilename, sizeof tempfilename);
1674 if (sock_puts(sock, "NDOP") < 0) return;
1675 if (sock_getln(sock, buf, sizeof buf) < 0) return;
1676 lprintf(CTDL_DEBUG, "<%s\n", buf);
1677 if (buf[0] != '2') {
1680 download_len = extract_long(&buf[4], 0);
1682 bytes_received = 0L;
1683 fp = fopen(tempfilename, "w");
1685 lprintf(CTDL_CRIT, "cannot open download file locally: %s\n",
1690 while (bytes_received < download_len) {
1691 snprintf(buf, sizeof buf, "READ %ld|%ld",
1693 ((download_len - bytes_received > IGNET_PACKET_SIZE)
1694 ? IGNET_PACKET_SIZE : (download_len - bytes_received)));
1695 if (sock_puts(sock, buf) < 0) {
1697 unlink(tempfilename);
1700 if (sock_getln(sock, buf, sizeof buf) < 0) {
1702 unlink(tempfilename);
1705 if (buf[0] == '6') {
1706 plen = extract_long(&buf[4], 0);
1707 if (sock_read(sock, pbuf, plen, 1) < 0) {
1709 unlink(tempfilename);
1712 fwrite((char *) pbuf, plen, 1, fp);
1713 bytes_received = bytes_received + plen;
1718 if (sock_puts(sock, "CLOS") < 0) {
1719 unlink(tempfilename);
1722 if (sock_getln(sock, buf, sizeof buf) < 0) {
1723 unlink(tempfilename);
1726 if (download_len > 0)
1727 lprintf(CTDL_NOTICE, "Received %ld octets from <%s>\n",
1728 download_len, remote_nodename);
1729 lprintf(CTDL_DEBUG, "%s\n", buf);
1731 /* Now copy the temp file to its permanent location.
1732 * (We copy instead of link because they may be on different filesystems)
1734 begin_critical_section(S_NETSPOOL);
1741 fp = fopen(tempfilename, "r");
1743 newfp = fopen(filename, "w");
1744 if (newfp != NULL) {
1745 while (fgets(buf, sizeof buf, fp) != NULL) {
1746 fprintf(newfp, "%s", buf);
1752 end_critical_section(S_NETSPOOL);
1753 unlink(tempfilename);
1759 * transmit network spool to the remote system
1761 void transmit_spool(int sock, char *remote_nodename)
1766 long bytes_to_write, thisblock, bytes_written;
1770 if (sock_puts(sock, "NUOP") < 0) return;
1771 if (sock_getln(sock, buf, sizeof buf) < 0) return;
1772 lprintf(CTDL_DEBUG, "<%s\n", buf);
1773 if (buf[0] != '2') {
1777 snprintf(sfname, sizeof sfname,
1781 fd = open(sfname, O_RDONLY);
1783 if (errno != ENOENT) {
1784 lprintf(CTDL_CRIT, "cannot open upload file locally: %s\n",
1790 while (plen = (long) read(fd, pbuf, IGNET_PACKET_SIZE), plen > 0L) {
1791 bytes_to_write = plen;
1792 while (bytes_to_write > 0L) {
1793 snprintf(buf, sizeof buf, "WRIT %ld", bytes_to_write);
1794 if (sock_puts(sock, buf) < 0) {
1798 if (sock_getln(sock, buf, sizeof buf) < 0) {
1802 thisblock = atol(&buf[4]);
1803 if (buf[0] == '7') {
1804 if (sock_write(sock, pbuf,
1805 (int) thisblock) < 0) {
1809 bytes_to_write -= thisblock;
1810 bytes_written += thisblock;
1819 if (sock_puts(sock, "UCLS 1") < 0) return;
1820 if (sock_getln(sock, buf, sizeof buf) < 0) return;
1821 lprintf(CTDL_NOTICE, "Sent %ld octets to <%s>\n",
1822 bytes_written, remote_nodename);
1823 lprintf(CTDL_DEBUG, "<%s\n", buf);
1824 if (buf[0] == '2') {
1825 lprintf(CTDL_DEBUG, "Removing <%s>\n", sfname);
1833 * Poll one Citadel node (called by network_poll_other_citadel_nodes() below)
1835 void network_poll_node(char *node, char *secret, char *host, char *port) {
1839 if (network_talking_to(node, NTT_CHECK)) return;
1840 network_talking_to(node, NTT_ADD);
1841 lprintf(CTDL_NOTICE, "Connecting to <%s> at %s:%s\n", node, host, port);
1843 sock = sock_connect(host, port, "tcp");
1845 lprintf(CTDL_ERR, "Could not connect: %s\n", strerror(errno));
1846 network_talking_to(node, NTT_REMOVE);
1850 lprintf(CTDL_DEBUG, "Connected!\n");
1852 /* Read the server greeting */
1853 if (sock_getln(sock, buf, sizeof buf) < 0) goto bail;
1854 lprintf(CTDL_DEBUG, ">%s\n", buf);
1856 /* Identify ourselves */
1857 snprintf(buf, sizeof buf, "NETP %s|%s", config.c_nodename, secret);
1858 lprintf(CTDL_DEBUG, "<%s\n", buf);
1859 if (sock_puts(sock, buf) <0) goto bail;
1860 if (sock_getln(sock, buf, sizeof buf) < 0) goto bail;
1861 lprintf(CTDL_DEBUG, ">%s\n", buf);
1862 if (buf[0] != '2') goto bail;
1864 /* At this point we are authenticated. */
1865 receive_spool(sock, node);
1866 transmit_spool(sock, node);
1868 sock_puts(sock, "QUIT");
1869 bail: sock_close(sock);
1870 network_talking_to(node, NTT_REMOVE);
1876 * Poll other Citadel nodes and transfer inbound/outbound network data.
1877 * Set "full" to nonzero to force a poll of every node, or to zero to poll
1878 * only nodes to which we have data to send.
1880 void network_poll_other_citadel_nodes(int full_poll) {
1888 char spoolfile[256];
1890 if (working_ignetcfg == NULL) {
1891 lprintf(CTDL_DEBUG, "No nodes defined - not polling\n");
1895 /* Use the string tokenizer to grab one line at a time */
1896 for (i=0; i<num_tokens(working_ignetcfg, '\n'); ++i) {
1897 extract_token(linebuf, working_ignetcfg, i, '\n', sizeof linebuf);
1898 extract_token(node, linebuf, 0, '|', sizeof node);
1899 extract_token(secret, linebuf, 1, '|', sizeof secret);
1900 extract_token(host, linebuf, 2, '|', sizeof host);
1901 extract_token(port, linebuf, 3, '|', sizeof port);
1902 if ( !IsEmptyStr(node) && !IsEmptyStr(secret)
1903 && !IsEmptyStr(host) && !IsEmptyStr(port)) {
1911 if (access(spoolfile, R_OK) == 0) {
1916 network_poll_node(node, secret, host, port);
1927 * It's ok if these directories already exist. Just fail silently.
1929 void create_spool_dirs(void) {
1930 mkdir(ctdl_spool_dir, 0700);
1931 chown(ctdl_spool_dir, CTDLUID, (-1));
1932 mkdir(ctdl_netin_dir, 0700);
1933 chown(ctdl_netin_dir, CTDLUID, (-1));
1934 mkdir(ctdl_netout_dir, 0700);
1935 chown(ctdl_netout_dir, CTDLUID, (-1));
1943 * network_do_queue()
1945 * Run through the rooms doing various types of network stuff.
1947 void network_do_queue(void) {
1948 static time_t last_run = 0L;
1949 struct RoomProcList *ptr;
1950 int full_processing = 1;
1953 * Run the full set of processing tasks no more frequently
1954 * than once every n seconds
1956 if ( (time(NULL) - last_run) < config.c_net_freq ) {
1957 full_processing = 0;
1961 * This is a simple concurrency check to make sure only one queue run
1962 * is done at a time. We could do this with a mutex, but since we
1963 * don't really require extremely fine granularity here, we'll do it
1964 * with a static variable instead.
1966 if (doing_queue) return;
1969 /* Load the IGnet Configuration into memory */
1970 load_working_ignetcfg();
1973 * Poll other Citadel nodes. Maybe. If "full_processing" is set
1974 * then we poll everyone. Otherwise we only poll nodes we have stuff
1977 network_poll_other_citadel_nodes(full_processing);
1980 * Load the network map and filter list into memory.
1983 filterlist = load_filter_list();
1986 * Go ahead and run the queue
1988 if (full_processing) {
1989 lprintf(CTDL_DEBUG, "network: loading outbound queue\n");
1990 ForEachRoom(network_queue_room, NULL);
1993 if (rplist != NULL) {
1994 lprintf(CTDL_DEBUG, "network: running outbound queue\n");
1995 while (rplist != NULL) {
1996 char spoolroomname[ROOMNAMELEN];
1997 safestrncpy(spoolroomname, rplist->name, sizeof spoolroomname);
1998 begin_critical_section(S_RPLIST);
2000 /* pop this record off the list */
2002 rplist = rplist->next;
2005 /* invalidate any duplicate entries to prevent double processing */
2006 for (ptr=rplist; ptr!=NULL; ptr=ptr->next) {
2007 if (!strcasecmp(ptr->name, spoolroomname)) {
2012 end_critical_section(S_RPLIST);
2013 if (spoolroomname[0] != 0) {
2014 network_spoolout_room(spoolroomname);
2019 /* If there is anything in the inbound queue, process it */
2020 network_do_spoolin();
2022 /* Save the network map back to disk */
2023 write_network_map();
2025 /* Free the filter list in memory */
2026 free_filter_list(filterlist);
2029 network_purge_spoolout();
2031 lprintf(CTDL_DEBUG, "network: queue run completed\n");
2033 if (full_processing) {
2034 last_run = time(NULL);
2042 * cmd_netp() - authenticate to the server as another Citadel node polling
2043 * for network traffic
2045 void cmd_netp(char *cmdbuf)
2055 extract_token(node, cmdbuf, 0, '|', sizeof node);
2056 extract_token(pass, cmdbuf, 1, '|', sizeof pass);
2059 lprintf(CTDL_WARNING, "Network node <%s> refused - spooling", node);
2060 cprintf("%d spooling - try again in a few minutes\n",
2061 ERROR + RESOURCE_BUSY);
2065 /* load the IGnet Configuration to check node validity */
2066 load_working_ignetcfg();
2067 v = is_valid_node(nexthop, secret, node);
2070 lprintf(CTDL_WARNING, "Unknown node <%s>\n", node);
2071 cprintf("%d authentication failed\n",
2072 ERROR + PASSWORD_REQUIRED);
2076 if (strcasecmp(pass, secret)) {
2077 lprintf(CTDL_WARNING, "Bad password for network node <%s>", node);
2078 cprintf("%d authentication failed\n", ERROR + PASSWORD_REQUIRED);
2082 if (network_talking_to(node, NTT_CHECK)) {
2083 lprintf(CTDL_WARNING, "Duplicate session for network node <%s>", node);
2084 cprintf("%d Already talking to %s right now\n", ERROR + RESOURCE_BUSY, node);
2088 safestrncpy(CC->net_node, node, sizeof CC->net_node);
2089 network_talking_to(node, NTT_ADD);
2090 lprintf(CTDL_NOTICE, "Network node <%s> logged in\n", CC->net_node);
2091 cprintf("%d authenticated as network node '%s'\n", CIT_OK,
2095 int network_room_handler (struct ctdlroom *room)
2097 network_queue_room(room, NULL);
2102 * Module entry point
2104 CTDL_MODULE_INIT(network)
2106 create_spool_dirs();
2107 CtdlRegisterProtoHook(cmd_gnet, "GNET", "Get network config");
2108 CtdlRegisterProtoHook(cmd_snet, "SNET", "Set network config");
2109 CtdlRegisterProtoHook(cmd_netp, "NETP", "Identify as network poller");
2110 CtdlRegisterProtoHook(cmd_nsyn, "NSYN", "Synchronize room to node");
2111 CtdlRegisterSessionHook(network_do_queue, EVT_TIMER);
2112 CtdlRegisterRoomHook(network_room_handler);
2113 CtdlRegisterCleanupHook(destroy_network_queue_room);
2116 /* return our Subversion id for the Log */