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 (CtdlAccessCheck(ac_room_aide)) return;
370 assoc_file_name(filename, sizeof filename, &CC->room, ctdl_netcfg_dir);
371 cprintf("%d Network settings for room #%ld <%s>\n",
373 CC->room.QRnumber, CC->room.QRname);
375 fp = fopen(filename, "r");
377 while (fgets(buf, sizeof buf, fp) != NULL) {
378 buf[strlen(buf)-1] = 0;
379 cprintf("%s\n", buf);
388 void cmd_snet(char *argbuf) {
389 char tempfilename[SIZ];
396 if (CtdlAccessCheck(ac_room_aide)) return;
397 CtdlMakeTempFileName(tempfilename, sizeof tempfilename);
398 assoc_file_name(filename, sizeof filename, &CC->room, ctdl_netcfg_dir);
400 fp = fopen(tempfilename, "w");
402 cprintf("%d Cannot open %s: %s\n",
403 ERROR + INTERNAL_ERROR,
408 cprintf("%d %s\n", SEND_LISTING, tempfilename);
409 while (client_getln(buf, sizeof buf), strcmp(buf, "000")) {
410 fprintf(fp, "%s\n", buf);
414 /* Now copy the temp file to its permanent location
415 * (We use /bin/mv instead of link() because they may be on
416 * different filesystems)
419 snprintf(buf, sizeof buf, "/bin/mv %s %s", tempfilename, filename);
420 begin_critical_section(S_NETCONFIGS);
422 end_critical_section(S_NETCONFIGS);
427 * Deliver digest messages
429 void network_deliver_digest(struct SpoolControl *sc) {
432 struct CtdlMessage *msg = NULL;
435 size_t recps_len = SIZ;
436 struct recptypes *valid;
437 struct namelist *nptr;
439 if (sc->num_msgs_spooled < 1) {
440 fclose(sc->digestfp);
445 msg = malloc(sizeof(struct CtdlMessage));
446 memset(msg, 0, sizeof(struct CtdlMessage));
447 msg->cm_magic = CTDLMESSAGE_MAGIC;
448 msg->cm_format_type = FMT_RFC822;
449 msg->cm_anon_type = MES_NORMAL;
451 sprintf(buf, "%ld", time(NULL));
452 msg->cm_fields['T'] = strdup(buf);
453 msg->cm_fields['A'] = strdup(CC->room.QRname);
454 snprintf(buf, sizeof buf, "[%s]", CC->room.QRname);
455 msg->cm_fields['U'] = strdup(buf);
456 sprintf(buf, "room_%s@%s", CC->room.QRname, config.c_fqdn);
457 for (i=0; !IsEmptyStr(&buf[i]); ++i) {
458 if (isspace(buf[i])) buf[i]='_';
459 buf[i] = tolower(buf[i]);
461 msg->cm_fields['F'] = strdup(buf);
462 msg->cm_fields['R'] = strdup(buf);
465 * Go fetch the contents of the digest
467 fseek(sc->digestfp, 0L, SEEK_END);
468 msglen = ftell(sc->digestfp);
470 msg->cm_fields['M'] = malloc(msglen + 1);
471 fseek(sc->digestfp, 0L, SEEK_SET);
472 fread(msg->cm_fields['M'], (size_t)msglen, 1, sc->digestfp);
473 msg->cm_fields['M'][msglen] = 0;
475 fclose(sc->digestfp);
478 /* Now generate the delivery instructions */
481 * Figure out how big a buffer we need to allocate
483 for (nptr = sc->digestrecps; nptr != NULL; nptr = nptr->next) {
484 recps_len = recps_len + strlen(nptr->name) + 2;
487 recps = malloc(recps_len);
490 lprintf(CTDL_EMERG, "Cannot allocate %ld bytes for recps...\n", (long)recps_len);
497 for (nptr = sc->digestrecps; nptr != NULL; nptr = nptr->next) {
498 if (nptr != sc->digestrecps) {
501 strcat(recps, nptr->name);
504 /* Now submit the message */
505 valid = validate_recipients(recps);
507 CtdlSubmitMsg(msg, valid, NULL);
508 CtdlFreeMessage(msg);
509 free_recipients(valid);
514 * Deliver list messages to everyone on the list ... efficiently
516 void network_deliver_list(struct CtdlMessage *msg, struct SpoolControl *sc) {
518 size_t recps_len = SIZ;
519 struct recptypes *valid;
520 struct namelist *nptr;
522 /* Don't do this if there were no recipients! */
523 if (sc->listrecps == NULL) return;
525 /* Now generate the delivery instructions */
528 * Figure out how big a buffer we need to allocate
530 for (nptr = sc->listrecps; nptr != NULL; nptr = nptr->next) {
531 recps_len = recps_len + strlen(nptr->name) + 2;
534 recps = malloc(recps_len);
537 lprintf(CTDL_EMERG, "Cannot allocate %ld bytes for recps...\n", (long)recps_len);
544 for (nptr = sc->listrecps; nptr != NULL; nptr = nptr->next) {
545 if (nptr != sc->listrecps) {
548 strcat(recps, nptr->name);
551 /* Now submit the message */
552 valid = validate_recipients(recps);
554 CtdlSubmitMsg(msg, valid, NULL);
555 free_recipients(valid);
556 /* Do not call CtdlFreeMessage(msg) here; the caller will free it. */
563 * Spools out one message from the list.
565 void network_spool_msg(long msgnum, void *userdata) {
566 struct SpoolControl *sc;
568 char *newpath = NULL;
569 size_t instr_len = SIZ;
570 struct CtdlMessage *msg = NULL;
571 struct namelist *nptr;
572 struct maplist *mptr;
573 struct ser_ret sermsg;
579 int delete_after_send = 0; /* Set to 1 to delete after spooling */
580 int ok_to_participate = 0;
581 struct recptypes *valid;
583 sc = (struct SpoolControl *)userdata;
586 * Process mailing list recipients
589 if (sc->listrecps != NULL) {
590 /* Fetch the message. We're going to need to modify it
591 * in order to insert the [list name] in it, etc.
593 msg = CtdlFetchMessage(msgnum, 1);
596 /* Prepend "[List name]" to the subject */
597 if (msg->cm_fields['U'] == NULL) {
598 msg->cm_fields['U'] = strdup("(no subject)");
600 snprintf(buf, sizeof buf, "[%s] %s", CC->room.QRname, msg->cm_fields['U']);
601 free(msg->cm_fields['U']);
602 msg->cm_fields['U'] = strdup(buf);
604 /* Set the recipient of the list message to the
605 * email address of the room itself.
606 * FIXME ... I want to be able to pick any address
608 if (msg->cm_fields['R'] != NULL) {
609 free(msg->cm_fields['R']);
611 msg->cm_fields['R'] = malloc(256);
612 snprintf(msg->cm_fields['R'], 256,
613 "room_%s@%s", CC->room.QRname,
615 for (i=0; !IsEmptyStr(&msg->cm_fields['R'][i]); ++i) {
616 if (isspace(msg->cm_fields['R'][i])) {
617 msg->cm_fields['R'][i] = '_';
621 /* Handle delivery */
622 network_deliver_list(msg, sc);
623 CtdlFreeMessage(msg);
628 * Process digest recipients
630 if ((sc->digestrecps != NULL) && (sc->digestfp != NULL)) {
631 msg = CtdlFetchMessage(msgnum, 1);
633 fprintf(sc->digestfp, " -----------------------------------"
634 "------------------------------------"
636 fprintf(sc->digestfp, "From: ");
637 if (msg->cm_fields['A'] != NULL) {
638 fprintf(sc->digestfp, "%s ", msg->cm_fields['A']);
640 if (msg->cm_fields['F'] != NULL) {
641 fprintf(sc->digestfp, "<%s> ", msg->cm_fields['F']);
643 else if (msg->cm_fields['N'] != NULL) {
644 fprintf(sc->digestfp, "@%s ", msg->cm_fields['N']);
646 fprintf(sc->digestfp, "\n");
647 if (msg->cm_fields['U'] != NULL) {
648 fprintf(sc->digestfp, "Subject: %s\n", msg->cm_fields['U']);
651 CC->redirect_buffer = malloc(SIZ);
652 CC->redirect_len = 0;
653 CC->redirect_alloc = SIZ;
655 safestrncpy(CC->preferred_formats, "text/plain", sizeof CC->preferred_formats);
656 CtdlOutputPreLoadedMsg(msg, MT_CITADEL, HEADERS_NONE, 0, 0);
658 striplt(CC->redirect_buffer);
659 fprintf(sc->digestfp, "\n%s\n", CC->redirect_buffer);
661 free(CC->redirect_buffer);
662 CC->redirect_buffer = NULL;
663 CC->redirect_len = 0;
664 CC->redirect_alloc = 0;
666 sc->num_msgs_spooled += 1;
672 * Process client-side list participations for this room
675 if (sc->participates != NULL) {
676 msg = CtdlFetchMessage(msgnum, 1);
679 /* Only send messages which originated on our own Citadel
680 * network, otherwise we'll end up sending the remote
681 * mailing list's messages back to it, which is rude...
683 ok_to_participate = 0;
684 if (msg->cm_fields['N'] != NULL) {
685 if (!strcasecmp(msg->cm_fields['N'], config.c_nodename)) {
686 ok_to_participate = 1;
688 if (is_valid_node(NULL, NULL, msg->cm_fields['N']) == 0) {
689 ok_to_participate = 1;
692 if (ok_to_participate) {
693 if (msg->cm_fields['F'] != NULL) {
694 free(msg->cm_fields['F']);
696 msg->cm_fields['F'] = malloc(SIZ);
697 /* Replace the Internet email address of the actual
698 * author with the email address of the room itself,
699 * so the remote listserv doesn't reject us.
700 * FIXME ... I want to be able to pick any address
702 snprintf(msg->cm_fields['F'], SIZ,
703 "room_%s@%s", CC->room.QRname,
705 for (i=0; !IsEmptyStr(&msg->cm_fields['F'][i]); ++i) {
706 if (isspace(msg->cm_fields['F'][i])) {
707 msg->cm_fields['F'][i] = '_';
712 * Figure out how big a buffer we need to allocate
714 for (nptr = sc->participates; nptr != NULL; nptr = nptr->next) {
716 if (msg->cm_fields['R'] == NULL) {
717 free(msg->cm_fields['R']);
719 msg->cm_fields['R'] = strdup(nptr->name);
721 valid = validate_recipients(nptr->name);
722 CtdlSubmitMsg(msg, valid, "");
723 free_recipients(valid);
727 CtdlFreeMessage(msg);
732 * Process IGnet push shares
734 msg = CtdlFetchMessage(msgnum, 1);
738 /* Prepend our node name to the Path field whenever
739 * sending a message to another IGnet node
741 if (msg->cm_fields['P'] == NULL) {
742 msg->cm_fields['P'] = strdup("username");
744 newpath_len = strlen(msg->cm_fields['P']) +
745 strlen(config.c_nodename) + 2;
746 newpath = malloc(newpath_len);
747 snprintf(newpath, newpath_len, "%s!%s",
748 config.c_nodename, msg->cm_fields['P']);
749 free(msg->cm_fields['P']);
750 msg->cm_fields['P'] = newpath;
753 * Determine if this message is set to be deleted
754 * after sending out on the network
756 if (msg->cm_fields['S'] != NULL) {
757 if (!strcasecmp(msg->cm_fields['S'], "CANCEL")) {
758 delete_after_send = 1;
762 /* Now send it to every node */
763 if (sc->ignet_push_shares != NULL)
764 for (mptr = sc->ignet_push_shares; mptr != NULL;
769 /* Check for valid node name */
770 if (is_valid_node(NULL, NULL, mptr->remote_nodename) != 0) {
771 lprintf(CTDL_ERR, "Invalid node <%s>\n",
772 mptr->remote_nodename);
776 /* Check for split horizon */
777 lprintf(CTDL_DEBUG, "Path is %s\n", msg->cm_fields['P']);
778 bang = num_tokens(msg->cm_fields['P'], '!');
779 if (bang > 1) for (i=0; i<(bang-1); ++i) {
780 extract_token(buf, msg->cm_fields['P'],
782 if (!strcasecmp(buf, mptr->remote_nodename)) {
787 /* Send the message */
791 * Force the message to appear in the correct room
792 * on the far end by setting the C field correctly
794 if (msg->cm_fields['C'] != NULL) {
795 free(msg->cm_fields['C']);
797 if (!IsEmptyStr(mptr->remote_roomname)) {
798 msg->cm_fields['C'] = strdup(mptr->remote_roomname);
801 msg->cm_fields['C'] = strdup(CC->room.QRname);
804 /* serialize it for transmission */
805 serialize_message(&sermsg, msg);
806 if (sermsg.len > 0) {
808 /* write it to the spool file */
809 snprintf(filename, sizeof filename,"%s/%s",
811 mptr->remote_nodename);
812 lprintf(CTDL_DEBUG, "Appending to %s\n", filename);
813 fp = fopen(filename, "ab");
820 lprintf(CTDL_ERR, "%s: %s\n", filename, strerror(errno));
823 /* free the serialized version */
829 CtdlFreeMessage(msg);
832 /* update lastsent */
833 sc->lastsent = msgnum;
835 /* Delete this message if delete-after-send is set */
836 if (delete_after_send) {
837 CtdlDeleteMessages(CC->room.QRname, &msgnum, 1, "");
844 * Batch up and send all outbound traffic from the current room
846 void network_spoolout_room(char *room_to_spool) {
851 char roomname[ROOMNAMELEN];
854 struct SpoolControl sc;
855 struct namelist *nptr = NULL;
856 struct maplist *mptr = NULL;
859 int skipthisline = 0;
863 * If the room doesn't exist, don't try to perform its networking tasks.
864 * Normally this should never happen, but once in a while maybe a room gets
865 * queued for networking and then deleted before it can happen.
867 if (getroom(&CC->room, room_to_spool) != 0) {
868 lprintf(CTDL_CRIT, "ERROR: cannot load <%s>\n", room_to_spool);
872 memset(&sc, 0, sizeof(struct SpoolControl));
873 assoc_file_name(filename, sizeof filename, &CC->room, ctdl_netcfg_dir);
875 begin_critical_section(S_NETCONFIGS);
877 /* Only do net processing for rooms that have netconfigs */
878 fp = fopen(filename, "r");
880 end_critical_section(S_NETCONFIGS);
884 lprintf(CTDL_INFO, "Networking started for <%s>\n", CC->room.QRname);
886 while (fgets(buf, sizeof buf, fp) != NULL) {
887 buf[strlen(buf)-1] = 0;
889 extract_token(instr, buf, 0, '|', sizeof instr);
890 if (!strcasecmp(instr, "lastsent")) {
891 sc.lastsent = extract_long(buf, 1);
893 else if (!strcasecmp(instr, "listrecp")) {
894 nptr = (struct namelist *)
895 malloc(sizeof(struct namelist));
896 nptr->next = sc.listrecps;
897 extract_token(nptr->name, buf, 1, '|', sizeof nptr->name);
900 else if (!strcasecmp(instr, "participate")) {
901 nptr = (struct namelist *)
902 malloc(sizeof(struct namelist));
903 nptr->next = sc.participates;
904 extract_token(nptr->name, buf, 1, '|', sizeof nptr->name);
905 sc.participates = nptr;
907 else if (!strcasecmp(instr, "digestrecp")) {
908 nptr = (struct namelist *)
909 malloc(sizeof(struct namelist));
910 nptr->next = sc.digestrecps;
911 extract_token(nptr->name, buf, 1, '|', sizeof nptr->name);
912 sc.digestrecps = nptr;
914 else if (!strcasecmp(instr, "ignet_push_share")) {
915 /* by checking each node's validity, we automatically
916 * purge nodes which do not exist from room network
917 * configurations at this time.
919 extract_token(nodename, buf, 1, '|', sizeof nodename);
920 extract_token(roomname, buf, 2, '|', sizeof roomname);
921 strcpy(nexthop, "xxx");
922 if (is_valid_node(nexthop, NULL, nodename) == 0) {
923 if (IsEmptyStr(nexthop)) {
924 mptr = (struct maplist *)
925 malloc(sizeof(struct maplist));
926 mptr->next = sc.ignet_push_shares;
927 strcpy(mptr->remote_nodename, nodename);
928 strcpy(mptr->remote_roomname, roomname);
929 sc.ignet_push_shares = mptr;
934 /* Preserve 'other' lines ... *unless* they happen to
935 * be subscribe/unsubscribe pendings with expired
939 if (!strncasecmp(buf, "subpending|", 11)) {
940 if (time(NULL) - extract_long(buf, 4) > EXP) {
944 if (!strncasecmp(buf, "unsubpending|", 13)) {
945 if (time(NULL) - extract_long(buf, 3) > EXP) {
950 if (skipthisline == 0) {
951 linesize = strlen(buf);
952 sc.misc = realloc(sc.misc,
953 (miscsize + linesize + 2) );
954 sprintf(&sc.misc[miscsize], "%s\n", buf);
955 miscsize = miscsize + linesize + 1;
963 /* If there are digest recipients, we have to build a digest */
964 if (sc.digestrecps != NULL) {
965 sc.digestfp = tmpfile();
966 fprintf(sc.digestfp, "Content-type: text/plain\n\n");
969 /* Do something useful */
970 CtdlForEachMessage(MSGS_GT, sc.lastsent, NULL, NULL, NULL,
971 network_spool_msg, &sc);
973 /* If we wrote a digest, deliver it and then close it */
974 snprintf(buf, sizeof buf, "room_%s@%s",
975 CC->room.QRname, config.c_fqdn);
976 for (i=0; !IsEmptyStr(&buf[i]); ++i) {
977 buf[i] = tolower(buf[i]);
978 if (isspace(buf[i])) buf[i] = '_';
980 if (sc.digestfp != NULL) {
981 fprintf(sc.digestfp, " -----------------------------------"
982 "------------------------------------"
984 "You are subscribed to the '%s' "
986 "To post to the list: %s\n",
989 network_deliver_digest(&sc); /* deliver and close */
992 /* Now rewrite the config file */
993 fp = fopen(filename, "w");
995 lprintf(CTDL_CRIT, "ERROR: cannot open %s: %s\n",
996 filename, strerror(errno));
999 fprintf(fp, "lastsent|%ld\n", sc.lastsent);
1001 /* Write out the listrecps while freeing from memory at the
1002 * same time. Am I clever or what? :)
1004 while (sc.listrecps != NULL) {
1005 fprintf(fp, "listrecp|%s\n", sc.listrecps->name);
1006 nptr = sc.listrecps->next;
1008 sc.listrecps = nptr;
1010 /* Do the same for digestrecps */
1011 while (sc.digestrecps != NULL) {
1012 fprintf(fp, "digestrecp|%s\n", sc.digestrecps->name);
1013 nptr = sc.digestrecps->next;
1014 free(sc.digestrecps);
1015 sc.digestrecps = nptr;
1017 /* Do the same for participates */
1018 while (sc.participates != NULL) {
1019 fprintf(fp, "participate|%s\n", sc.participates->name);
1020 nptr = sc.participates->next;
1021 free(sc.participates);
1022 sc.participates = nptr;
1024 while (sc.ignet_push_shares != NULL) {
1025 /* by checking each node's validity, we automatically
1026 * purge nodes which do not exist from room network
1027 * configurations at this time.
1029 if (is_valid_node(NULL, NULL, sc.ignet_push_shares->remote_nodename) == 0) {
1031 fprintf(fp, "ignet_push_share|%s",
1032 sc.ignet_push_shares->remote_nodename);
1033 if (!IsEmptyStr(sc.ignet_push_shares->remote_roomname)) {
1034 fprintf(fp, "|%s", sc.ignet_push_shares->remote_roomname);
1037 mptr = sc.ignet_push_shares->next;
1038 free(sc.ignet_push_shares);
1039 sc.ignet_push_shares = mptr;
1041 if (sc.misc != NULL) {
1042 fwrite(sc.misc, strlen(sc.misc), 1, fp);
1048 end_critical_section(S_NETCONFIGS);
1054 * Send the *entire* contents of the current room to one specific network node,
1055 * ignoring anything we know about which messages have already undergone
1056 * network processing. This can be used to bring a new node into sync.
1058 int network_sync_to(char *target_node) {
1059 struct SpoolControl sc;
1060 int num_spooled = 0;
1069 /* Grab the configuration line we're looking for */
1070 assoc_file_name(filename, sizeof filename, &CC->room, ctdl_netcfg_dir);
1071 begin_critical_section(S_NETCONFIGS);
1072 fp = fopen(filename, "r");
1074 end_critical_section(S_NETCONFIGS);
1077 while (fgets(buf, sizeof buf, fp) != NULL) {
1078 buf[strlen(buf)-1] = 0;
1079 extract_token(sc_type, buf, 0, '|', sizeof sc_type);
1080 extract_token(sc_node, buf, 1, '|', sizeof sc_node);
1081 extract_token(sc_room, buf, 2, '|', sizeof sc_room);
1082 if ( (!strcasecmp(sc_type, "ignet_push_share"))
1083 && (!strcasecmp(sc_node, target_node)) ) {
1086 /* Concise syntax because we don't need a full linked-list */
1087 memset(&sc, 0, sizeof(struct SpoolControl));
1088 sc.ignet_push_shares = (struct maplist *)
1089 malloc(sizeof(struct maplist));
1090 sc.ignet_push_shares->next = NULL;
1091 safestrncpy(sc.ignet_push_shares->remote_nodename,
1093 sizeof sc.ignet_push_shares->remote_nodename);
1094 safestrncpy(sc.ignet_push_shares->remote_roomname,
1096 sizeof sc.ignet_push_shares->remote_roomname);
1100 end_critical_section(S_NETCONFIGS);
1102 if (!found_node) return(-1);
1104 /* Send ALL messages */
1105 num_spooled = CtdlForEachMessage(MSGS_ALL, 0L, NULL, NULL, NULL,
1106 network_spool_msg, &sc);
1108 /* Concise cleanup because we know there's only one node in the sc */
1109 free(sc.ignet_push_shares);
1111 lprintf(CTDL_NOTICE, "Synchronized %d messages to <%s>\n",
1112 num_spooled, target_node);
1113 return(num_spooled);
1118 * Implements the NSYN command
1120 void cmd_nsyn(char *argbuf) {
1122 char target_node[256];
1124 if (CtdlAccessCheck(ac_aide)) return;
1126 extract_token(target_node, argbuf, 0, '|', sizeof target_node);
1127 num_spooled = network_sync_to(target_node);
1128 if (num_spooled >= 0) {
1129 cprintf("%d Spooled %d messages.\n", CIT_OK, num_spooled);
1132 cprintf("%d No such room/node share exists.\n",
1133 ERROR + ROOM_NOT_FOUND);
1140 * Batch up and send all outbound traffic from the current room
1142 void network_queue_room(struct ctdlroom *qrbuf, void *data) {
1143 struct RoomProcList *ptr;
1145 ptr = (struct RoomProcList *) malloc(sizeof (struct RoomProcList));
1146 if (ptr == NULL) return;
1148 safestrncpy(ptr->name, qrbuf->QRname, sizeof ptr->name);
1149 begin_critical_section(S_RPLIST);
1152 end_critical_section(S_RPLIST);
1155 void destroy_network_queue_room(void)
1157 struct RoomProcList *cur, *p;
1158 struct NetMap *nmcur, *nmp;
1161 begin_critical_section(S_RPLIST);
1169 end_critical_section(S_RPLIST);
1172 while (nmcur != NULL)
1179 if (working_ignetcfg != NULL)
1180 free (working_ignetcfg);
1181 working_ignetcfg = NULL;
1186 * Learn topology from path fields
1188 void network_learn_topology(char *node, char *path) {
1190 struct NetMap *nmptr;
1192 strcpy(nexthop, "");
1194 if (num_tokens(path, '!') < 3) return;
1195 for (nmptr = the_netmap; nmptr != NULL; nmptr = nmptr->next) {
1196 if (!strcasecmp(nmptr->nodename, node)) {
1197 extract_token(nmptr->nexthop, path, 0, '!', sizeof nmptr->nexthop);
1198 nmptr->lastcontact = time(NULL);
1204 /* If we got here then it's not in the map, so add it. */
1205 nmptr = (struct NetMap *) malloc(sizeof (struct NetMap));
1206 strcpy(nmptr->nodename, node);
1207 nmptr->lastcontact = time(NULL);
1208 extract_token(nmptr->nexthop, path, 0, '!', sizeof nmptr->nexthop);
1209 nmptr->next = the_netmap;
1218 * Bounce a message back to the sender
1220 void network_bounce(struct CtdlMessage *msg, char *reason) {
1221 char *oldpath = NULL;
1223 char bouncesource[SIZ];
1224 char recipient[SIZ];
1225 struct recptypes *valid = NULL;
1226 char force_room[ROOMNAMELEN];
1227 static int serialnum = 0;
1230 lprintf(CTDL_DEBUG, "entering network_bounce()\n");
1232 if (msg == NULL) return;
1234 snprintf(bouncesource, sizeof bouncesource, "%s@%s", BOUNCESOURCE, config.c_nodename);
1237 * Give it a fresh message ID
1239 if (msg->cm_fields['I'] != NULL) {
1240 free(msg->cm_fields['I']);
1242 snprintf(buf, sizeof buf, "%ld.%04lx.%04x@%s",
1243 (long)time(NULL), (long)getpid(), ++serialnum, config.c_fqdn);
1244 msg->cm_fields['I'] = strdup(buf);
1247 * FIXME ... right now we're just sending a bounce; we really want to
1248 * include the text of the bounced message.
1250 if (msg->cm_fields['M'] != NULL) {
1251 free(msg->cm_fields['M']);
1253 msg->cm_fields['M'] = strdup(reason);
1254 msg->cm_format_type = 0;
1257 * Turn the message around
1259 if (msg->cm_fields['R'] == NULL) {
1260 free(msg->cm_fields['R']);
1263 if (msg->cm_fields['D'] == NULL) {
1264 free(msg->cm_fields['D']);
1267 snprintf(recipient, sizeof recipient, "%s@%s",
1268 msg->cm_fields['A'], msg->cm_fields['N']);
1270 if (msg->cm_fields['A'] == NULL) {
1271 free(msg->cm_fields['A']);
1274 if (msg->cm_fields['N'] == NULL) {
1275 free(msg->cm_fields['N']);
1278 if (msg->cm_fields['U'] == NULL) {
1279 free(msg->cm_fields['U']);
1282 msg->cm_fields['A'] = strdup(BOUNCESOURCE);
1283 msg->cm_fields['N'] = strdup(config.c_nodename);
1284 msg->cm_fields['U'] = strdup("Delivery Status Notification (Failure)");
1286 /* prepend our node to the path */
1287 if (msg->cm_fields['P'] != NULL) {
1288 oldpath = msg->cm_fields['P'];
1289 msg->cm_fields['P'] = NULL;
1292 oldpath = strdup("unknown_user");
1294 size = strlen(oldpath) + SIZ;
1295 msg->cm_fields['P'] = malloc(size);
1296 snprintf(msg->cm_fields['P'], size, "%s!%s", config.c_nodename, oldpath);
1299 /* Now submit the message */
1300 valid = validate_recipients(recipient);
1301 if (valid != NULL) if (valid->num_error != 0) {
1302 free_recipients(valid);
1305 if ( (valid == NULL) || (!strcasecmp(recipient, bouncesource)) ) {
1306 strcpy(force_room, config.c_aideroom);
1309 strcpy(force_room, "");
1311 if ( (valid == NULL) && IsEmptyStr(force_room) ) {
1312 strcpy(force_room, config.c_aideroom);
1314 CtdlSubmitMsg(msg, valid, force_room);
1317 if (valid != NULL) free_recipients(valid);
1318 CtdlFreeMessage(msg);
1319 lprintf(CTDL_DEBUG, "leaving network_bounce()\n");
1326 * Process a buffer containing a single message from a single file
1327 * from the inbound queue
1329 void network_process_buffer(char *buffer, long size) {
1330 struct CtdlMessage *msg = NULL;
1333 struct recptypes *recp = NULL;
1334 char target_room[ROOMNAMELEN];
1335 struct ser_ret sermsg;
1336 char *oldpath = NULL;
1340 unsigned char firstbyte;
1341 unsigned char lastbyte;
1343 /* Validate just a little bit. First byte should be FF and
1344 * last byte should be 00.
1346 memcpy(&firstbyte, &buffer[0], 1);
1347 memcpy(&lastbyte, &buffer[size-1], 1);
1348 if ( (firstbyte != 255) || (lastbyte != 0) ) {
1349 lprintf(CTDL_ERR, "Corrupt message! Ignoring.\n");
1353 /* Set default target room to trash */
1354 strcpy(target_room, TWITROOM);
1356 /* Load the message into memory */
1357 msg = (struct CtdlMessage *) malloc(sizeof(struct CtdlMessage));
1358 memset(msg, 0, sizeof(struct CtdlMessage));
1359 msg->cm_magic = CTDLMESSAGE_MAGIC;
1360 msg->cm_anon_type = buffer[1];
1361 msg->cm_format_type = buffer[2];
1363 for (pos = 3; pos < size; ++pos) {
1364 field = buffer[pos];
1365 msg->cm_fields[field] = strdup(&buffer[pos+1]);
1366 pos = pos + strlen(&buffer[(int)pos]);
1369 /* Check for message routing */
1370 if (msg->cm_fields['D'] != NULL) {
1371 if (strcasecmp(msg->cm_fields['D'], config.c_nodename)) {
1373 /* route the message */
1374 strcpy(nexthop, "");
1375 if (is_valid_node(nexthop, NULL,
1376 msg->cm_fields['D']) == 0) {
1378 /* prepend our node to the path */
1379 if (msg->cm_fields['P'] != NULL) {
1380 oldpath = msg->cm_fields['P'];
1381 msg->cm_fields['P'] = NULL;
1384 oldpath = strdup("unknown_user");
1386 size = strlen(oldpath) + SIZ;
1387 msg->cm_fields['P'] = malloc(size);
1388 snprintf(msg->cm_fields['P'], size, "%s!%s",
1389 config.c_nodename, oldpath);
1392 /* serialize the message */
1393 serialize_message(&sermsg, msg);
1396 if (IsEmptyStr(nexthop)) {
1397 strcpy(nexthop, msg->cm_fields['D']);
1404 lprintf(CTDL_DEBUG, "Appending to %s\n", filename);
1405 fp = fopen(filename, "ab");
1412 lprintf(CTDL_ERR, "%s: %s\n", filename, strerror(errno));
1415 CtdlFreeMessage(msg);
1419 else { /* invalid destination node name */
1422 "A message you sent could not be delivered due to an invalid destination node"
1423 " name. Please check the address and try sending the message again.\n");
1432 * Check to see if we already have a copy of this message, and
1433 * abort its processing if so. (We used to post a warning to Aide>
1434 * every time this happened, but the network is now so densely
1435 * connected that it's inevitable.)
1437 if (network_usetable(msg) != 0) {
1441 /* Learn network topology from the path */
1442 if ((msg->cm_fields['N'] != NULL) && (msg->cm_fields['P'] != NULL)) {
1443 network_learn_topology(msg->cm_fields['N'],
1444 msg->cm_fields['P']);
1447 /* Is the sending node giving us a very persuasive suggestion about
1448 * which room this message should be saved in? If so, go with that.
1450 if (msg->cm_fields['C'] != NULL) {
1451 safestrncpy(target_room,
1452 msg->cm_fields['C'],
1453 sizeof target_room);
1456 /* Otherwise, does it have a recipient? If so, validate it... */
1457 else if (msg->cm_fields['R'] != NULL) {
1458 recp = validate_recipients(msg->cm_fields['R']);
1459 if (recp != NULL) if (recp->num_error != 0) {
1461 "A message you sent could not be delivered due to an invalid address.\n"
1462 "Please check the address and try sending the message again.\n");
1464 free_recipients(recp);
1467 strcpy(target_room, ""); /* no target room if mail */
1470 /* Our last shot at finding a home for this message is to see if
1471 * it has the O field (Originating room) set.
1473 else if (msg->cm_fields['O'] != NULL) {
1474 safestrncpy(target_room,
1475 msg->cm_fields['O'],
1476 sizeof target_room);
1479 /* Strip out fields that are only relevant during transit */
1480 if (msg->cm_fields['D'] != NULL) {
1481 free(msg->cm_fields['D']);
1482 msg->cm_fields['D'] = NULL;
1484 if (msg->cm_fields['C'] != NULL) {
1485 free(msg->cm_fields['C']);
1486 msg->cm_fields['C'] = NULL;
1489 /* save the message into a room */
1490 if (PerformNetprocHooks(msg, target_room) == 0) {
1491 msg->cm_flags = CM_SKIP_HOOKS;
1492 CtdlSubmitMsg(msg, recp, target_room);
1494 CtdlFreeMessage(msg);
1495 free_recipients(recp);
1500 * Process a single message from a single file from the inbound queue
1502 void network_process_message(FILE *fp, long msgstart, long msgend) {
1507 hold_pos = ftell(fp);
1508 size = msgend - msgstart + 1;
1509 buffer = malloc(size);
1510 if (buffer != NULL) {
1511 fseek(fp, msgstart, SEEK_SET);
1512 fread(buffer, size, 1, fp);
1513 network_process_buffer(buffer, size);
1517 fseek(fp, hold_pos, SEEK_SET);
1522 * Process a single file from the inbound queue
1524 void network_process_file(char *filename) {
1526 long msgstart = (-1L);
1527 long msgend = (-1L);
1532 fp = fopen(filename, "rb");
1534 lprintf(CTDL_CRIT, "Error opening %s: %s\n",
1535 filename, strerror(errno));
1539 lprintf(CTDL_INFO, "network: processing <%s>\n", filename);
1541 /* Look for messages in the data stream and break them out */
1542 while (ch = getc(fp), ch >= 0) {
1545 if (msgstart >= 0L) {
1546 msgend = msgcur - 1;
1547 network_process_message(fp, msgstart, msgend);
1555 msgend = msgcur - 1;
1556 if (msgstart >= 0L) {
1557 network_process_message(fp, msgstart, msgend);
1566 * Process anything in the inbound queue
1568 void network_do_spoolin(void) {
1571 struct stat statbuf;
1573 static time_t last_spoolin_mtime = 0L;
1576 * Check the spoolin directory's modification time. If it hasn't
1577 * been touched, we don't need to scan it.
1579 if (stat(ctdl_netin_dir, &statbuf)) return;
1580 if (statbuf.st_mtime == last_spoolin_mtime) {
1581 lprintf(CTDL_DEBUG, "network: nothing in inbound queue\n");
1584 last_spoolin_mtime = statbuf.st_mtime;
1585 lprintf(CTDL_DEBUG, "network: processing inbound queue\n");
1588 * Ok, there's something interesting in there, so scan it.
1590 dp = opendir(ctdl_netin_dir);
1591 if (dp == NULL) return;
1593 while (d = readdir(dp), d != NULL) {
1594 if ((strcmp(d->d_name, ".")) && (strcmp(d->d_name, ".."))) {
1600 network_process_file(filename);
1608 * Delete any files in the outbound queue that were intended
1609 * to be sent to nodes which no longer exist.
1611 void network_purge_spoolout(void) {
1618 dp = opendir(ctdl_netout_dir);
1619 if (dp == NULL) return;
1621 while (d = readdir(dp), d != NULL) {
1622 if (!strcmp(d->d_name, ".") || !strcmp(d->d_name, ".."))
1630 strcpy(nexthop, "");
1631 i = is_valid_node(nexthop, NULL, d->d_name);
1633 if ( (i != 0) || !IsEmptyStr(nexthop) ) {
1644 * receive network spool from the remote system
1646 void receive_spool(int sock, char *remote_nodename) {
1648 long bytes_received;
1650 static char pbuf[IGNET_PACKET_SIZE];
1651 char tempfilename[PATH_MAX];
1655 CtdlMakeTempFileName(tempfilename, sizeof tempfilename);
1656 if (sock_puts(sock, "NDOP") < 0) return;
1657 if (sock_gets(sock, buf) < 0) return;
1658 lprintf(CTDL_DEBUG, "<%s\n", buf);
1659 if (buf[0] != '2') {
1662 download_len = extract_long(&buf[4], 0);
1664 bytes_received = 0L;
1665 fp = fopen(tempfilename, "w");
1667 lprintf(CTDL_CRIT, "cannot open download file locally: %s\n",
1672 while (bytes_received < download_len) {
1673 snprintf(buf, sizeof buf, "READ %ld|%ld",
1675 ((download_len - bytes_received > IGNET_PACKET_SIZE)
1676 ? IGNET_PACKET_SIZE : (download_len - bytes_received)));
1677 if (sock_puts(sock, buf) < 0) {
1679 unlink(tempfilename);
1682 if (sock_gets(sock, buf) < 0) {
1684 unlink(tempfilename);
1687 if (buf[0] == '6') {
1688 plen = extract_long(&buf[4], 0);
1689 if (sock_read(sock, pbuf, plen) < 0) {
1691 unlink(tempfilename);
1694 fwrite((char *) pbuf, plen, 1, fp);
1695 bytes_received = bytes_received + plen;
1700 if (sock_puts(sock, "CLOS") < 0) {
1701 unlink(tempfilename);
1704 if (sock_gets(sock, buf) < 0) {
1705 unlink(tempfilename);
1708 if (download_len > 0)
1709 lprintf(CTDL_NOTICE, "Received %ld octets from <%s>",
1710 download_len, remote_nodename);
1711 lprintf(CTDL_DEBUG, "%s", buf);
1712 /* TODO: make move inline. forking is verry expensive. */
1726 * transmit network spool to the remote system
1728 void transmit_spool(int sock, char *remote_nodename)
1733 long bytes_to_write, thisblock, bytes_written;
1737 if (sock_puts(sock, "NUOP") < 0) return;
1738 if (sock_gets(sock, buf) < 0) return;
1739 lprintf(CTDL_DEBUG, "<%s\n", buf);
1740 if (buf[0] != '2') {
1744 snprintf(sfname, sizeof sfname,
1748 fd = open(sfname, O_RDONLY);
1750 if (errno != ENOENT) {
1751 lprintf(CTDL_CRIT, "cannot open upload file locally: %s\n",
1757 while (plen = (long) read(fd, pbuf, IGNET_PACKET_SIZE), plen > 0L) {
1758 bytes_to_write = plen;
1759 while (bytes_to_write > 0L) {
1760 snprintf(buf, sizeof buf, "WRIT %ld", bytes_to_write);
1761 if (sock_puts(sock, buf) < 0) {
1765 if (sock_gets(sock, buf) < 0) {
1769 thisblock = atol(&buf[4]);
1770 if (buf[0] == '7') {
1771 if (sock_write(sock, pbuf,
1772 (int) thisblock) < 0) {
1776 bytes_to_write -= thisblock;
1777 bytes_written += thisblock;
1786 if (sock_puts(sock, "UCLS 1") < 0) return;
1787 if (sock_gets(sock, buf) < 0) return;
1788 lprintf(CTDL_NOTICE, "Sent %ld octets to <%s>\n",
1789 bytes_written, remote_nodename);
1790 lprintf(CTDL_DEBUG, "<%s\n", buf);
1791 if (buf[0] == '2') {
1792 lprintf(CTDL_DEBUG, "Removing <%s>\n", sfname);
1800 * Poll one Citadel node (called by network_poll_other_citadel_nodes() below)
1802 void network_poll_node(char *node, char *secret, char *host, char *port) {
1806 if (network_talking_to(node, NTT_CHECK)) return;
1807 network_talking_to(node, NTT_ADD);
1808 lprintf(CTDL_NOTICE, "Connecting to <%s> at %s:%s\n", node, host, port);
1810 sock = sock_connect(host, port, "tcp");
1812 lprintf(CTDL_ERR, "Could not connect: %s\n", strerror(errno));
1813 network_talking_to(node, NTT_REMOVE);
1817 lprintf(CTDL_DEBUG, "Connected!\n");
1819 /* Read the server greeting */
1820 if (sock_gets(sock, buf) < 0) goto bail;
1821 lprintf(CTDL_DEBUG, ">%s\n", buf);
1823 /* Identify ourselves */
1824 snprintf(buf, sizeof buf, "NETP %s|%s", config.c_nodename, secret);
1825 lprintf(CTDL_DEBUG, "<%s\n", buf);
1826 if (sock_puts(sock, buf) <0) goto bail;
1827 if (sock_gets(sock, buf) < 0) goto bail;
1828 lprintf(CTDL_DEBUG, ">%s\n", buf);
1829 if (buf[0] != '2') goto bail;
1831 /* At this point we are authenticated. */
1832 receive_spool(sock, node);
1833 transmit_spool(sock, node);
1835 sock_puts(sock, "QUIT");
1836 bail: sock_close(sock);
1837 network_talking_to(node, NTT_REMOVE);
1843 * Poll other Citadel nodes and transfer inbound/outbound network data.
1844 * Set "full" to nonzero to force a poll of every node, or to zero to poll
1845 * only nodes to which we have data to send.
1847 void network_poll_other_citadel_nodes(int full_poll) {
1855 char spoolfile[256];
1857 if (working_ignetcfg == NULL) {
1858 lprintf(CTDL_DEBUG, "No nodes defined - not polling\n");
1862 /* Use the string tokenizer to grab one line at a time */
1863 for (i=0; i<num_tokens(working_ignetcfg, '\n'); ++i) {
1864 extract_token(linebuf, working_ignetcfg, i, '\n', sizeof linebuf);
1865 extract_token(node, linebuf, 0, '|', sizeof node);
1866 extract_token(secret, linebuf, 1, '|', sizeof secret);
1867 extract_token(host, linebuf, 2, '|', sizeof host);
1868 extract_token(port, linebuf, 3, '|', sizeof port);
1869 if ( !IsEmptyStr(node) && !IsEmptyStr(secret)
1870 && !IsEmptyStr(host) && !IsEmptyStr(port)) {
1878 if (access(spoolfile, R_OK) == 0) {
1883 network_poll_node(node, secret, host, port);
1894 * It's ok if these directories already exist. Just fail silently.
1896 void create_spool_dirs(void) {
1897 mkdir(ctdl_spool_dir, 0700);
1898 chown(ctdl_spool_dir, CTDLUID, (-1));
1899 mkdir(ctdl_netin_dir, 0700);
1900 chown(ctdl_netin_dir, CTDLUID, (-1));
1901 mkdir(ctdl_netout_dir, 0700);
1902 chown(ctdl_netout_dir, CTDLUID, (-1));
1910 * network_do_queue()
1912 * Run through the rooms doing various types of network stuff.
1914 void network_do_queue(void) {
1915 static time_t last_run = 0L;
1916 struct RoomProcList *ptr;
1917 int full_processing = 1;
1920 * Run the full set of processing tasks no more frequently
1921 * than once every n seconds
1923 if ( (time(NULL) - last_run) < config.c_net_freq ) {
1924 full_processing = 0;
1928 * This is a simple concurrency check to make sure only one queue run
1929 * is done at a time. We could do this with a mutex, but since we
1930 * don't really require extremely fine granularity here, we'll do it
1931 * with a static variable instead.
1933 if (doing_queue) return;
1936 /* Load the IGnet Configuration into memory */
1937 load_working_ignetcfg();
1940 * Poll other Citadel nodes. Maybe. If "full_processing" is set
1941 * then we poll everyone. Otherwise we only poll nodes we have stuff
1944 network_poll_other_citadel_nodes(full_processing);
1947 * Load the network map and filter list into memory.
1950 filterlist = load_filter_list();
1953 * Go ahead and run the queue
1955 if (full_processing) {
1956 lprintf(CTDL_DEBUG, "network: loading outbound queue\n");
1957 ForEachRoom(network_queue_room, NULL);
1960 if (rplist != NULL) {
1961 lprintf(CTDL_DEBUG, "network: running outbound queue\n");
1962 while (rplist != NULL) {
1963 char spoolroomname[ROOMNAMELEN];
1964 safestrncpy(spoolroomname, rplist->name, sizeof spoolroomname);
1965 begin_critical_section(S_RPLIST);
1967 /* pop this record off the list */
1969 rplist = rplist->next;
1972 /* invalidate any duplicate entries to prevent double processing */
1973 for (ptr=rplist; ptr!=NULL; ptr=ptr->next) {
1974 if (!strcasecmp(ptr->name, spoolroomname)) {
1979 end_critical_section(S_RPLIST);
1980 if (spoolroomname[0] != 0) {
1981 network_spoolout_room(spoolroomname);
1986 /* If there is anything in the inbound queue, process it */
1987 network_do_spoolin();
1989 /* Save the network map back to disk */
1990 write_network_map();
1992 /* Free the filter list in memory */
1993 free_filter_list(filterlist);
1996 network_purge_spoolout();
1998 lprintf(CTDL_DEBUG, "network: queue run completed\n");
2000 if (full_processing) {
2001 last_run = time(NULL);
2009 * cmd_netp() - authenticate to the server as another Citadel node polling
2010 * for network traffic
2012 void cmd_netp(char *cmdbuf)
2022 extract_token(node, cmdbuf, 0, '|', sizeof node);
2023 extract_token(pass, cmdbuf, 1, '|', sizeof pass);
2026 lprintf(CTDL_WARNING, "Network node <%s> refused - spooling", node);
2027 cprintf("%d spooling - try again in a few minutes\n",
2028 ERROR + RESOURCE_BUSY);
2032 /* load the IGnet Configuration to check node validity */
2033 load_working_ignetcfg();
2034 v = is_valid_node(nexthop, secret, node);
2037 lprintf(CTDL_WARNING, "Unknown node <%s>\n", node);
2038 cprintf("%d authentication failed\n",
2039 ERROR + PASSWORD_REQUIRED);
2043 if (strcasecmp(pass, secret)) {
2044 lprintf(CTDL_WARNING, "Bad password for network node <%s>", node);
2045 cprintf("%d authentication failed\n", ERROR + PASSWORD_REQUIRED);
2049 if (network_talking_to(node, NTT_CHECK)) {
2050 lprintf(CTDL_WARNING, "Duplicate session for network node <%s>", node);
2051 cprintf("%d Already talking to %s right now\n", ERROR + RESOURCE_BUSY, node);
2055 safestrncpy(CC->net_node, node, sizeof CC->net_node);
2056 network_talking_to(node, NTT_ADD);
2057 lprintf(CTDL_NOTICE, "Network node <%s> logged in\n", CC->net_node);
2058 cprintf("%d authenticated as network node '%s'\n", CIT_OK,
2062 int network_room_handler (struct ctdlroom *room)
2064 network_queue_room(room, NULL);
2069 * Module entry point
2071 CTDL_MODULE_INIT(network)
2073 create_spool_dirs();
2074 CtdlRegisterProtoHook(cmd_gnet, "GNET", "Get network config");
2075 CtdlRegisterProtoHook(cmd_snet, "SNET", "Set network config");
2076 CtdlRegisterProtoHook(cmd_netp, "NETP", "Identify as network poller");
2077 CtdlRegisterProtoHook(cmd_nsyn, "NSYN", "Synchronize room to node");
2078 CtdlRegisterSessionHook(network_do_queue, EVT_TIMER);
2079 CtdlRegisterRoomHook(network_room_handler);
2080 CtdlRegisterCleanupHook(destroy_network_queue_room);
2083 /* return our Subversion id for the Log */