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>
51 #include <libcitadel.h>
54 #include "citserver.h"
62 #include "internet_addressing.h"
63 #include "serv_network.h"
64 #include "clientsocket.h"
66 #include "citadel_dirs.h"
74 #include "ctdl_module.h"
78 /* Nonzero while we are doing network processing */
79 static int doing_queue = 0;
82 * When we do network processing, it's accomplished in two passes; one to
83 * gather a list of rooms and one to actually do them. It's ok that rplist
84 * is global; we have a mutex that keeps it safe.
86 struct RoomProcList *rplist = NULL;
89 * We build a map of network nodes during processing.
91 NetMap *the_netmap = NULL;
92 int netmap_changed = 0;
93 char *working_ignetcfg = NULL;
96 * Load or refresh the Citadel network (IGnet) configuration for this node.
98 void load_working_ignetcfg(void) {
102 cfg = CtdlGetSysConfig(IGNETCFG);
107 oldcfg = working_ignetcfg;
108 working_ignetcfg = cfg;
109 if (oldcfg != NULL) {
119 * Keep track of what messages to reject
121 FilterList *load_filter_list(void) {
122 char *serialized_list = NULL;
125 FilterList *newlist = NULL;
128 serialized_list = CtdlGetSysConfig(FILTERLIST);
129 if (serialized_list == NULL) return(NULL); /* if null, no entries */
131 /* Use the string tokenizer to grab one line at a time */
132 for (i=0; i<num_tokens(serialized_list, '\n'); ++i) {
133 extract_token(buf, serialized_list, i, '\n', sizeof buf);
134 nptr = (FilterList *) malloc(sizeof(FilterList));
135 extract_token(nptr->fl_user, buf, 0, '|', sizeof nptr->fl_user);
136 striplt(nptr->fl_user);
137 extract_token(nptr->fl_room, buf, 1, '|', sizeof nptr->fl_room);
138 striplt(nptr->fl_room);
139 extract_token(nptr->fl_node, buf, 2, '|', sizeof nptr->fl_node);
140 striplt(nptr->fl_node);
142 /* Cowardly refuse to add an any/any/any entry that would
143 * end up filtering every single message.
145 if (IsEmptyStr(nptr->fl_user) &&
146 IsEmptyStr(nptr->fl_room) &&
147 IsEmptyStr(nptr->fl_node)) {
151 nptr->next = newlist;
156 free(serialized_list);
161 void free_filter_list(FilterList *fl) {
162 if (fl == NULL) return;
163 free_filter_list(fl->next);
170 * Check the use table. This is a list of messages which have recently
171 * arrived on the system. It is maintained and queried to prevent the same
172 * message from being entered into the database multiple times if it happens
173 * to arrive multiple times by accident.
175 int network_usetable(struct CtdlMessage *msg) {
178 struct cdbdata *cdbut;
181 /* Bail out if we can't generate a message ID */
185 if (msg->cm_fields['I'] == NULL) {
188 if (IsEmptyStr(msg->cm_fields['I'])) {
192 /* Generate the message ID */
193 strcpy(msgid, msg->cm_fields['I']);
194 if (haschar(msgid, '@') == 0) {
196 if (msg->cm_fields['N'] != NULL) {
197 strcat(msgid, msg->cm_fields['N']);
204 cdbut = cdb_fetch(CDB_USETABLE, msgid, strlen(msgid));
210 /* If we got to this point, it's unique: add it. */
211 strcpy(ut.ut_msgid, msgid);
212 ut.ut_timestamp = time(NULL);
213 cdb_store(CDB_USETABLE, msgid, strlen(msgid),
214 &ut, sizeof(struct UseTable) );
220 * Read the network map from its configuration file into memory.
222 void read_network_map(void) {
223 char *serialized_map = NULL;
228 serialized_map = CtdlGetSysConfig(IGNETMAP);
229 if (serialized_map == NULL) return; /* if null, no entries */
231 /* Use the string tokenizer to grab one line at a time */
232 for (i=0; i<num_tokens(serialized_map, '\n'); ++i) {
233 extract_token(buf, serialized_map, i, '\n', sizeof buf);
234 nmptr = (NetMap *) malloc(sizeof(NetMap));
235 extract_token(nmptr->nodename, buf, 0, '|', sizeof nmptr->nodename);
236 nmptr->lastcontact = extract_long(buf, 1);
237 extract_token(nmptr->nexthop, buf, 2, '|', sizeof nmptr->nexthop);
238 nmptr->next = the_netmap;
242 free(serialized_map);
248 * Write the network map from memory back to the configuration file.
250 void write_network_map(void) {
251 char *serialized_map = NULL;
255 if (netmap_changed) {
256 serialized_map = strdup("");
258 if (the_netmap != NULL) {
259 for (nmptr = the_netmap; nmptr != NULL; nmptr = nmptr->next) {
260 serialized_map = realloc(serialized_map,
261 (strlen(serialized_map)+SIZ) );
262 if (!IsEmptyStr(nmptr->nodename)) {
263 snprintf(&serialized_map[strlen(serialized_map)],
267 (long)nmptr->lastcontact,
273 CtdlPutSysConfig(IGNETMAP, serialized_map);
274 free(serialized_map);
277 /* Now free the list */
278 while (the_netmap != NULL) {
279 nmptr = the_netmap->next;
289 * Check the network map and determine whether the supplied node name is
290 * valid. If it is not a neighbor node, supply the name of a neighbor node
291 * which is the next hop. If it *is* a neighbor node, we also fill in the
294 int is_valid_node(char *nexthop, char *secret, char *node) {
306 * First try the neighbor nodes
308 if (working_ignetcfg == NULL) {
309 CtdlLogPrintf(CTDL_ERR, "working_ignetcfg is NULL!\n");
310 if (nexthop != NULL) {
317 if (nexthop != NULL) {
321 /* Use the string tokenizer to grab one line at a time */
322 for (i=0; i<num_tokens(working_ignetcfg, '\n'); ++i) {
323 extract_token(linebuf, working_ignetcfg, i, '\n', sizeof linebuf);
324 extract_token(buf, linebuf, 0, '|', sizeof buf);
325 if (!strcasecmp(buf, node)) {
326 if (nexthop != NULL) {
329 if (secret != NULL) {
330 extract_token(secret, linebuf, 1, '|', 256);
337 return(retval); /* yup, it's a direct neighbor */
341 * If we get to this point we have to see if we know the next hop
343 if (the_netmap != NULL) {
344 for (nmptr = the_netmap; nmptr != NULL; nmptr = nmptr->next) {
345 if (!strcasecmp(nmptr->nodename, node)) {
346 if (nexthop != NULL) {
347 strcpy(nexthop, nmptr->nexthop);
355 * If we get to this point, the supplied node name is bogus.
357 CtdlLogPrintf(CTDL_ERR, "Invalid node name <%s>\n", node);
365 void cmd_gnet(char *argbuf) {
370 if ( (CC->room.QRflags & QR_MAILBOX) && (CC->user.usernum == atol(CC->room.QRname)) ) {
371 /* users can edit the netconfigs for their own mailbox rooms */
373 else if (CtdlAccessCheck(ac_room_aide)) return;
375 assoc_file_name(filename, sizeof filename, &CC->room, ctdl_netcfg_dir);
376 cprintf("%d Network settings for room #%ld <%s>\n",
378 CC->room.QRnumber, CC->room.QRname);
380 fp = fopen(filename, "r");
382 while (fgets(buf, sizeof buf, fp) != NULL) {
383 buf[strlen(buf)-1] = 0;
384 cprintf("%s\n", buf);
393 void cmd_snet(char *argbuf) {
394 char tempfilename[SIZ];
401 if ( (CC->room.QRflags & QR_MAILBOX) && (CC->user.usernum == atol(CC->room.QRname)) ) {
402 /* users can edit the netconfigs for their own mailbox rooms */
404 else if (CtdlAccessCheck(ac_room_aide)) return;
406 CtdlMakeTempFileName(tempfilename, sizeof tempfilename);
407 assoc_file_name(filename, sizeof filename, &CC->room, ctdl_netcfg_dir);
409 fp = fopen(tempfilename, "w");
411 cprintf("%d Cannot open %s: %s\n",
412 ERROR + INTERNAL_ERROR,
417 cprintf("%d %s\n", SEND_LISTING, tempfilename);
418 while (client_getln(buf, sizeof buf), strcmp(buf, "000")) {
419 fprintf(fp, "%s\n", buf);
423 /* Now copy the temp file to its permanent location.
424 * (We copy instead of link because they may be on different filesystems)
426 begin_critical_section(S_NETCONFIGS);
427 fp = fopen(tempfilename, "r");
429 newfp = fopen(filename, "w");
431 while (fgets(buf, sizeof buf, fp) != NULL) {
432 fprintf(newfp, "%s", buf);
438 end_critical_section(S_NETCONFIGS);
439 unlink(tempfilename);
444 * Deliver digest messages
446 void network_deliver_digest(SpoolControl *sc) {
449 struct CtdlMessage *msg = NULL;
452 size_t recps_len = SIZ;
453 struct recptypes *valid;
456 if (sc->num_msgs_spooled < 1) {
457 fclose(sc->digestfp);
462 msg = malloc(sizeof(struct CtdlMessage));
463 memset(msg, 0, sizeof(struct CtdlMessage));
464 msg->cm_magic = CTDLMESSAGE_MAGIC;
465 msg->cm_format_type = FMT_RFC822;
466 msg->cm_anon_type = MES_NORMAL;
468 sprintf(buf, "%ld", time(NULL));
469 msg->cm_fields['T'] = strdup(buf);
470 msg->cm_fields['A'] = strdup(CC->room.QRname);
471 snprintf(buf, sizeof buf, "[%s]", CC->room.QRname);
472 msg->cm_fields['U'] = strdup(buf);
473 sprintf(buf, "room_%s@%s", CC->room.QRname, config.c_fqdn);
474 for (i=0; buf[i]; ++i) {
475 if (isspace(buf[i])) buf[i]='_';
476 buf[i] = tolower(buf[i]);
478 msg->cm_fields['F'] = strdup(buf);
479 msg->cm_fields['R'] = strdup(buf);
482 * Go fetch the contents of the digest
484 fseek(sc->digestfp, 0L, SEEK_END);
485 msglen = ftell(sc->digestfp);
487 msg->cm_fields['M'] = malloc(msglen + 1);
488 fseek(sc->digestfp, 0L, SEEK_SET);
489 fread(msg->cm_fields['M'], (size_t)msglen, 1, sc->digestfp);
490 msg->cm_fields['M'][msglen] = 0;
492 fclose(sc->digestfp);
495 /* Now generate the delivery instructions */
498 * Figure out how big a buffer we need to allocate
500 for (nptr = sc->digestrecps; nptr != NULL; nptr = nptr->next) {
501 recps_len = recps_len + strlen(nptr->name) + 2;
504 recps = malloc(recps_len);
507 CtdlLogPrintf(CTDL_EMERG, "Cannot allocate %ld bytes for recps...\n", (long)recps_len);
514 for (nptr = sc->digestrecps; nptr != NULL; nptr = nptr->next) {
515 if (nptr != sc->digestrecps) {
518 strcat(recps, nptr->name);
521 /* Now submit the message */
522 valid = validate_recipients(recps, NULL, 0);
524 CtdlSubmitMsg(msg, valid, NULL);
525 CtdlFreeMessage(msg);
526 free_recipients(valid);
531 * Deliver list messages to everyone on the list ... efficiently
533 void network_deliver_list(struct CtdlMessage *msg, SpoolControl *sc) {
535 size_t recps_len = SIZ;
536 struct recptypes *valid;
539 /* Don't do this if there were no recipients! */
540 if (sc->listrecps == NULL) return;
542 /* Now generate the delivery instructions */
545 * Figure out how big a buffer we need to allocate
547 for (nptr = sc->listrecps; nptr != NULL; nptr = nptr->next) {
548 recps_len = recps_len + strlen(nptr->name) + 2;
551 recps = malloc(recps_len);
554 CtdlLogPrintf(CTDL_EMERG, "Cannot allocate %ld bytes for recps...\n", (long)recps_len);
561 for (nptr = sc->listrecps; nptr != NULL; nptr = nptr->next) {
562 if (nptr != sc->listrecps) {
565 strcat(recps, nptr->name);
568 /* Now submit the message */
569 valid = validate_recipients(recps, NULL, 0);
571 CtdlSubmitMsg(msg, valid, NULL);
572 free_recipients(valid);
573 /* Do not call CtdlFreeMessage(msg) here; the caller will free it. */
580 * Spools out one message from the list.
582 void network_spool_msg(long msgnum, void *userdata) {
585 char *newpath = NULL;
586 size_t instr_len = SIZ;
587 struct CtdlMessage *msg = NULL;
590 struct ser_ret sermsg;
596 int delete_after_send = 0; /* Set to 1 to delete after spooling */
597 int ok_to_participate = 0;
598 struct recptypes *valid;
600 sc = (SpoolControl *)userdata;
603 * Process mailing list recipients
606 if (sc->listrecps != NULL) {
607 /* Fetch the message. We're going to need to modify it
608 * in order to insert the [list name] in it, etc.
610 msg = CtdlFetchMessage(msgnum, 1);
613 /* Prepend "[List name]" to the subject */
614 if (msg->cm_fields['U'] == NULL) {
615 msg->cm_fields['U'] = strdup("(no subject)");
617 snprintf(buf, sizeof buf, "[%s] %s", CC->room.QRname, msg->cm_fields['U']);
618 free(msg->cm_fields['U']);
619 msg->cm_fields['U'] = strdup(buf);
621 /* Set the recipient of the list message to the
622 * email address of the room itself.
623 * FIXME ... I want to be able to pick any address
625 if (msg->cm_fields['R'] != NULL) {
626 free(msg->cm_fields['R']);
628 msg->cm_fields['R'] = malloc(256);
629 snprintf(msg->cm_fields['R'], 256,
630 "room_%s@%s", CC->room.QRname,
632 for (i=0; msg->cm_fields['R'][i]; ++i) {
633 if (isspace(msg->cm_fields['R'][i])) {
634 msg->cm_fields['R'][i] = '_';
638 /* Handle delivery */
639 network_deliver_list(msg, sc);
640 CtdlFreeMessage(msg);
645 * Process digest recipients
647 if ((sc->digestrecps != NULL) && (sc->digestfp != NULL)) {
648 msg = CtdlFetchMessage(msgnum, 1);
650 fprintf(sc->digestfp, " -----------------------------------"
651 "------------------------------------"
653 fprintf(sc->digestfp, "From: ");
654 if (msg->cm_fields['A'] != NULL) {
655 fprintf(sc->digestfp, "%s ", msg->cm_fields['A']);
657 if (msg->cm_fields['F'] != NULL) {
658 fprintf(sc->digestfp, "<%s> ", msg->cm_fields['F']);
660 else if (msg->cm_fields['N'] != NULL) {
661 fprintf(sc->digestfp, "@%s ", msg->cm_fields['N']);
663 fprintf(sc->digestfp, "\n");
664 if (msg->cm_fields['U'] != NULL) {
665 fprintf(sc->digestfp, "Subject: %s\n", msg->cm_fields['U']);
668 CC->redirect_buffer = malloc(SIZ);
669 CC->redirect_len = 0;
670 CC->redirect_alloc = SIZ;
672 safestrncpy(CC->preferred_formats, "text/plain", sizeof CC->preferred_formats);
673 CtdlOutputPreLoadedMsg(msg, MT_CITADEL, HEADERS_NONE, 0, 0);
675 striplt(CC->redirect_buffer);
676 fprintf(sc->digestfp, "\n%s\n", CC->redirect_buffer);
678 free(CC->redirect_buffer);
679 CC->redirect_buffer = NULL;
680 CC->redirect_len = 0;
681 CC->redirect_alloc = 0;
683 sc->num_msgs_spooled += 1;
689 * Process client-side list participations for this room
692 if (sc->participates != NULL) {
693 msg = CtdlFetchMessage(msgnum, 1);
696 /* Only send messages which originated on our own Citadel
697 * network, otherwise we'll end up sending the remote
698 * mailing list's messages back to it, which is rude...
700 ok_to_participate = 0;
701 if (msg->cm_fields['N'] != NULL) {
702 if (!strcasecmp(msg->cm_fields['N'], config.c_nodename)) {
703 ok_to_participate = 1;
705 if (is_valid_node(NULL, NULL, msg->cm_fields['N']) == 0) {
706 ok_to_participate = 1;
709 if (ok_to_participate) {
710 if (msg->cm_fields['F'] != NULL) {
711 free(msg->cm_fields['F']);
713 msg->cm_fields['F'] = malloc(SIZ);
714 /* Replace the Internet email address of the actual
715 * author with the email address of the room itself,
716 * so the remote listserv doesn't reject us.
717 * FIXME ... I want to be able to pick any address
719 snprintf(msg->cm_fields['F'], SIZ,
720 "room_%s@%s", CC->room.QRname,
722 for (i=0; msg->cm_fields['F'][i]; ++i) {
723 if (isspace(msg->cm_fields['F'][i])) {
724 msg->cm_fields['F'][i] = '_';
729 * Figure out how big a buffer we need to allocate
731 for (nptr = sc->participates; nptr != NULL; nptr = nptr->next) {
733 if (msg->cm_fields['R'] == NULL) {
734 free(msg->cm_fields['R']);
736 msg->cm_fields['R'] = strdup(nptr->name);
738 valid = validate_recipients(nptr->name, NULL, 0);
739 CtdlSubmitMsg(msg, valid, "");
740 free_recipients(valid);
744 CtdlFreeMessage(msg);
749 * Process IGnet push shares
751 msg = CtdlFetchMessage(msgnum, 1);
755 /* Prepend our node name to the Path field whenever
756 * sending a message to another IGnet node
758 if (msg->cm_fields['P'] == NULL) {
759 msg->cm_fields['P'] = strdup("username");
761 newpath_len = strlen(msg->cm_fields['P']) +
762 strlen(config.c_nodename) + 2;
763 newpath = malloc(newpath_len);
764 snprintf(newpath, newpath_len, "%s!%s",
765 config.c_nodename, msg->cm_fields['P']);
766 free(msg->cm_fields['P']);
767 msg->cm_fields['P'] = newpath;
770 * Determine if this message is set to be deleted
771 * after sending out on the network
773 if (msg->cm_fields['S'] != NULL) {
774 if (!strcasecmp(msg->cm_fields['S'], "CANCEL")) {
775 delete_after_send = 1;
779 /* Now send it to every node */
780 if (sc->ignet_push_shares != NULL)
781 for (mptr = sc->ignet_push_shares; mptr != NULL;
786 /* Check for valid node name */
787 if (is_valid_node(NULL, NULL, mptr->remote_nodename) != 0) {
788 CtdlLogPrintf(CTDL_ERR, "Invalid node <%s>\n", mptr->remote_nodename);
792 /* Check for split horizon */
793 CtdlLogPrintf(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 CtdlLogPrintf(CTDL_DEBUG, "Appending to %s\n", filename);
829 fp = fopen(filename, "ab");
836 CtdlLogPrintf(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, "");
859 int read_spoolcontrol_file(SpoolControl **scc, char *filename)
865 char roomname[ROOMNAMELEN];
868 int skipthisline = 0;
869 namelist *nptr = NULL;
870 maplist *mptr = NULL;
873 fp = fopen(filename, "r");
877 sc = malloc(sizeof(SpoolControl));
878 memset(sc, 0, sizeof(SpoolControl));
881 while (fgets(buf, sizeof buf, fp) != NULL) {
882 buf[strlen(buf)-1] = 0;
884 extract_token(instr, buf, 0, '|', sizeof instr);
885 if (!strcasecmp(instr, "lastsent")) {
886 sc->lastsent = extract_long(buf, 1);
888 else if (!strcasecmp(instr, "listrecp")) {
890 malloc(sizeof(namelist));
891 nptr->next = sc->listrecps;
892 extract_token(nptr->name, buf, 1, '|', sizeof nptr->name);
893 sc->listrecps = nptr;
895 else if (!strcasecmp(instr, "participate")) {
897 malloc(sizeof(namelist));
898 nptr->next = sc->participates;
899 extract_token(nptr->name, buf, 1, '|', sizeof nptr->name);
900 sc->participates = nptr;
902 else if (!strcasecmp(instr, "digestrecp")) {
904 malloc(sizeof(namelist));
905 nptr->next = sc->digestrecps;
906 extract_token(nptr->name, buf, 1, '|', sizeof nptr->name);
907 sc->digestrecps = nptr;
909 else if (!strcasecmp(instr, "ignet_push_share")) {
910 extract_token(nodename, buf, 1, '|', sizeof nodename);
911 extract_token(roomname, buf, 2, '|', sizeof roomname);
912 mptr = (maplist *) malloc(sizeof(maplist));
913 mptr->next = sc->ignet_push_shares;
914 strcpy(mptr->remote_nodename, nodename);
915 strcpy(mptr->remote_roomname, roomname);
916 sc->ignet_push_shares = mptr;
919 /* Preserve 'other' lines ... *unless* they happen to
920 * be subscribe/unsubscribe pendings with expired
924 if (!strncasecmp(buf, "subpending|", 11)) {
925 if (time(NULL) - extract_long(buf, 4) > EXP) {
929 if (!strncasecmp(buf, "unsubpending|", 13)) {
930 if (time(NULL) - extract_long(buf, 3) > EXP) {
935 if (skipthisline == 0) {
936 linesize = strlen(buf);
937 sc->misc = realloc(sc->misc,
938 (miscsize + linesize + 2) );
939 sprintf(&sc->misc[miscsize], "%s\n", buf);
940 miscsize = miscsize + linesize + 1;
950 void free_spoolcontrol_struct(SpoolControl **scc)
953 namelist *nptr = NULL;
954 maplist *mptr = NULL;
957 while (sc->listrecps != NULL) {
958 nptr = sc->listrecps->next;
960 sc->listrecps = nptr;
962 /* Do the same for digestrecps */
963 while (sc->digestrecps != NULL) {
964 nptr = sc->digestrecps->next;
965 free(sc->digestrecps);
966 sc->digestrecps = nptr;
968 /* Do the same for participates */
969 while (sc->participates != NULL) {
970 nptr = sc->participates->next;
971 free(sc->participates);
972 sc->participates = nptr;
974 while (sc->ignet_push_shares != NULL) {
975 mptr = sc->ignet_push_shares->next;
976 free(sc->ignet_push_shares);
977 sc->ignet_push_shares = mptr;
984 int writenfree_spoolcontrol_file(SpoolControl **scc, char *filename)
988 namelist *nptr = NULL;
989 maplist *mptr = NULL;
992 fp = fopen(filename, "w");
994 CtdlLogPrintf(CTDL_CRIT, "ERROR: cannot open %s: %s\n",
995 filename, strerror(errno));
996 free_spoolcontrol_struct(scc);
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;
1007 free(sc->listrecps);
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 fprintf(fp, "ignet_push_share|%s", sc->ignet_push_shares->remote_nodename);
1026 if (!IsEmptyStr(sc->ignet_push_shares->remote_roomname)) {
1027 fprintf(fp, "|%s", sc->ignet_push_shares->remote_roomname);
1030 mptr = sc->ignet_push_shares->next;
1031 free(sc->ignet_push_shares);
1032 sc->ignet_push_shares = mptr;
1034 if (sc->misc != NULL) {
1035 fwrite(sc->misc, strlen(sc->misc), 1, fp);
1045 int is_recipient(SpoolControl *sc, const char *Name)
1051 nptr = sc->listrecps;
1052 while (nptr != NULL) {
1053 if (strncmp(Name, nptr->name, len)==0)
1057 /* Do the same for digestrecps */
1058 nptr = sc->digestrecps;
1059 while (nptr != NULL) {
1060 if (strncmp(Name, nptr->name, len)==0)
1064 /* Do the same for participates */
1065 nptr = sc->participates;
1066 while (nptr != NULL) {
1067 if (strncmp(Name, nptr->name, len)==0)
1076 * Batch up and send all outbound traffic from the current room
1078 void network_spoolout_room(char *room_to_spool) {
1085 * If the room doesn't exist, don't try to perform its networking tasks.
1086 * Normally this should never happen, but once in a while maybe a room gets
1087 * queued for networking and then deleted before it can happen.
1089 if (getroom(&CC->room, room_to_spool) != 0) {
1090 CtdlLogPrintf(CTDL_CRIT, "ERROR: cannot load <%s>\n", room_to_spool);
1094 assoc_file_name(filename, sizeof filename, &CC->room, ctdl_netcfg_dir);
1096 CtdlLogPrintf(CTDL_INFO, "Networking started for <%s>\n", CC->room.QRname);
1097 begin_critical_section(S_NETCONFIGS);
1099 /* Only do net processing for rooms that have netconfigs */
1101 if (!read_spoolcontrol_file(&sc, filename))
1103 end_critical_section(S_NETCONFIGS);
1107 /* If there are digest recipients, we have to build a digest */
1108 if (sc->digestrecps != NULL) {
1109 sc->digestfp = tmpfile();
1110 fprintf(sc->digestfp, "Content-type: text/plain\n\n");
1113 /* Do something useful */
1114 CtdlForEachMessage(MSGS_GT, sc->lastsent, NULL, NULL, NULL,
1115 network_spool_msg, sc);
1117 /* If we wrote a digest, deliver it and then close it */
1118 snprintf(buf, sizeof buf, "room_%s@%s",
1119 CC->room.QRname, config.c_fqdn);
1120 for (i=0; buf[i]; ++i) {
1121 buf[i] = tolower(buf[i]);
1122 if (isspace(buf[i])) buf[i] = '_';
1124 if (sc->digestfp != NULL) {
1125 fprintf(sc->digestfp, " -----------------------------------"
1126 "------------------------------------"
1128 "You are subscribed to the '%s' "
1130 "To post to the list: %s\n",
1131 CC->room.QRname, buf
1133 network_deliver_digest(sc); /* deliver and close */
1136 /* Now rewrite the config file */
1137 writenfree_spoolcontrol_file (&sc, filename);
1138 end_critical_section(S_NETCONFIGS);
1144 * Send the *entire* contents of the current room to one specific network node,
1145 * ignoring anything we know about which messages have already undergone
1146 * network processing. This can be used to bring a new node into sync.
1148 int network_sync_to(char *target_node) {
1150 int num_spooled = 0;
1159 /* Grab the configuration line we're looking for */
1160 assoc_file_name(filename, sizeof filename, &CC->room, ctdl_netcfg_dir);
1161 begin_critical_section(S_NETCONFIGS);
1162 fp = fopen(filename, "r");
1164 end_critical_section(S_NETCONFIGS);
1167 while (fgets(buf, sizeof buf, fp) != NULL) {
1168 buf[strlen(buf)-1] = 0;
1169 extract_token(sc_type, buf, 0, '|', sizeof sc_type);
1170 extract_token(sc_node, buf, 1, '|', sizeof sc_node);
1171 extract_token(sc_room, buf, 2, '|', sizeof sc_room);
1172 if ( (!strcasecmp(sc_type, "ignet_push_share"))
1173 && (!strcasecmp(sc_node, target_node)) ) {
1176 /* Concise syntax because we don't need a full linked-list */
1177 memset(&sc, 0, sizeof(SpoolControl));
1178 sc.ignet_push_shares = (maplist *)
1179 malloc(sizeof(maplist));
1180 sc.ignet_push_shares->next = NULL;
1181 safestrncpy(sc.ignet_push_shares->remote_nodename,
1183 sizeof sc.ignet_push_shares->remote_nodename);
1184 safestrncpy(sc.ignet_push_shares->remote_roomname,
1186 sizeof sc.ignet_push_shares->remote_roomname);
1190 end_critical_section(S_NETCONFIGS);
1192 if (!found_node) return(-1);
1194 /* Send ALL messages */
1195 num_spooled = CtdlForEachMessage(MSGS_ALL, 0L, NULL, NULL, NULL,
1196 network_spool_msg, &sc);
1198 /* Concise cleanup because we know there's only one node in the sc */
1199 free(sc.ignet_push_shares);
1201 CtdlLogPrintf(CTDL_NOTICE, "Synchronized %d messages to <%s>\n",
1202 num_spooled, target_node);
1203 return(num_spooled);
1208 * Implements the NSYN command
1210 void cmd_nsyn(char *argbuf) {
1212 char target_node[256];
1214 if (CtdlAccessCheck(ac_aide)) return;
1216 extract_token(target_node, argbuf, 0, '|', sizeof target_node);
1217 num_spooled = network_sync_to(target_node);
1218 if (num_spooled >= 0) {
1219 cprintf("%d Spooled %d messages.\n", CIT_OK, num_spooled);
1222 cprintf("%d No such room/node share exists.\n",
1223 ERROR + ROOM_NOT_FOUND);
1230 * Batch up and send all outbound traffic from the current room
1232 void network_queue_room(struct ctdlroom *qrbuf, void *data) {
1233 struct RoomProcList *ptr;
1235 ptr = (struct RoomProcList *) malloc(sizeof (struct RoomProcList));
1236 if (ptr == NULL) return;
1238 safestrncpy(ptr->name, qrbuf->QRname, sizeof ptr->name);
1239 begin_critical_section(S_RPLIST);
1242 end_critical_section(S_RPLIST);
1245 void destroy_network_queue_room(void)
1247 struct RoomProcList *cur, *p;
1248 NetMap *nmcur, *nmp;
1251 begin_critical_section(S_RPLIST);
1259 end_critical_section(S_RPLIST);
1262 while (nmcur != NULL)
1269 if (working_ignetcfg != NULL)
1270 free (working_ignetcfg);
1271 working_ignetcfg = NULL;
1276 * Learn topology from path fields
1278 void network_learn_topology(char *node, char *path) {
1282 strcpy(nexthop, "");
1284 if (num_tokens(path, '!') < 3) return;
1285 for (nmptr = the_netmap; nmptr != NULL; nmptr = nmptr->next) {
1286 if (!strcasecmp(nmptr->nodename, node)) {
1287 extract_token(nmptr->nexthop, path, 0, '!', sizeof nmptr->nexthop);
1288 nmptr->lastcontact = time(NULL);
1294 /* If we got here then it's not in the map, so add it. */
1295 nmptr = (NetMap *) malloc(sizeof (NetMap));
1296 strcpy(nmptr->nodename, node);
1297 nmptr->lastcontact = time(NULL);
1298 extract_token(nmptr->nexthop, path, 0, '!', sizeof nmptr->nexthop);
1299 nmptr->next = the_netmap;
1308 * Bounce a message back to the sender
1310 void network_bounce(struct CtdlMessage *msg, char *reason) {
1311 char *oldpath = NULL;
1313 char bouncesource[SIZ];
1314 char recipient[SIZ];
1315 struct recptypes *valid = NULL;
1316 char force_room[ROOMNAMELEN];
1317 static int serialnum = 0;
1320 CtdlLogPrintf(CTDL_DEBUG, "entering network_bounce()\n");
1322 if (msg == NULL) return;
1324 snprintf(bouncesource, sizeof bouncesource, "%s@%s", BOUNCESOURCE, config.c_nodename);
1327 * Give it a fresh message ID
1329 if (msg->cm_fields['I'] != NULL) {
1330 free(msg->cm_fields['I']);
1332 snprintf(buf, sizeof buf, "%ld.%04lx.%04x@%s",
1333 (long)time(NULL), (long)getpid(), ++serialnum, config.c_fqdn);
1334 msg->cm_fields['I'] = strdup(buf);
1337 * FIXME ... right now we're just sending a bounce; we really want to
1338 * include the text of the bounced message.
1340 if (msg->cm_fields['M'] != NULL) {
1341 free(msg->cm_fields['M']);
1343 msg->cm_fields['M'] = strdup(reason);
1344 msg->cm_format_type = 0;
1347 * Turn the message around
1349 if (msg->cm_fields['R'] == NULL) {
1350 free(msg->cm_fields['R']);
1353 if (msg->cm_fields['D'] == NULL) {
1354 free(msg->cm_fields['D']);
1357 snprintf(recipient, sizeof recipient, "%s@%s",
1358 msg->cm_fields['A'], msg->cm_fields['N']);
1360 if (msg->cm_fields['A'] == NULL) {
1361 free(msg->cm_fields['A']);
1364 if (msg->cm_fields['N'] == NULL) {
1365 free(msg->cm_fields['N']);
1368 if (msg->cm_fields['U'] == NULL) {
1369 free(msg->cm_fields['U']);
1372 msg->cm_fields['A'] = strdup(BOUNCESOURCE);
1373 msg->cm_fields['N'] = strdup(config.c_nodename);
1374 msg->cm_fields['U'] = strdup("Delivery Status Notification (Failure)");
1376 /* prepend our node to the path */
1377 if (msg->cm_fields['P'] != NULL) {
1378 oldpath = msg->cm_fields['P'];
1379 msg->cm_fields['P'] = NULL;
1382 oldpath = strdup("unknown_user");
1384 size = strlen(oldpath) + SIZ;
1385 msg->cm_fields['P'] = malloc(size);
1386 snprintf(msg->cm_fields['P'], size, "%s!%s", config.c_nodename, oldpath);
1389 /* Now submit the message */
1390 valid = validate_recipients(recipient, NULL, 0);
1391 if (valid != NULL) if (valid->num_error != 0) {
1392 free_recipients(valid);
1395 if ( (valid == NULL) || (!strcasecmp(recipient, bouncesource)) ) {
1396 strcpy(force_room, config.c_aideroom);
1399 strcpy(force_room, "");
1401 if ( (valid == NULL) && IsEmptyStr(force_room) ) {
1402 strcpy(force_room, config.c_aideroom);
1404 CtdlSubmitMsg(msg, valid, force_room);
1407 if (valid != NULL) free_recipients(valid);
1408 CtdlFreeMessage(msg);
1409 CtdlLogPrintf(CTDL_DEBUG, "leaving network_bounce()\n");
1416 * Process a buffer containing a single message from a single file
1417 * from the inbound queue
1419 void network_process_buffer(char *buffer, long size) {
1420 struct CtdlMessage *msg = NULL;
1423 struct recptypes *recp = NULL;
1424 char target_room[ROOMNAMELEN];
1425 struct ser_ret sermsg;
1426 char *oldpath = NULL;
1430 unsigned char firstbyte;
1431 unsigned char lastbyte;
1433 /* Validate just a little bit. First byte should be FF and * last byte should be 00. */
1434 firstbyte = buffer[0];
1435 lastbyte = buffer[size-1];
1436 if ( (firstbyte != 255) || (lastbyte != 0) ) {
1437 CtdlLogPrintf(CTDL_ERR, "Corrupt message ignored. Length=%ld, firstbyte = %d, lastbyte = %d\n",
1438 size, firstbyte, lastbyte);
1442 /* Set default target room to trash */
1443 strcpy(target_room, TWITROOM);
1445 /* Load the message into memory */
1446 msg = (struct CtdlMessage *) malloc(sizeof(struct CtdlMessage));
1447 memset(msg, 0, sizeof(struct CtdlMessage));
1448 msg->cm_magic = CTDLMESSAGE_MAGIC;
1449 msg->cm_anon_type = buffer[1];
1450 msg->cm_format_type = buffer[2];
1452 for (pos = 3; pos < size; ++pos) {
1453 field = buffer[pos];
1454 msg->cm_fields[field] = strdup(&buffer[pos+1]);
1455 pos = pos + strlen(&buffer[(int)pos]);
1458 /* Check for message routing */
1459 if (msg->cm_fields['D'] != NULL) {
1460 if (strcasecmp(msg->cm_fields['D'], config.c_nodename)) {
1462 /* route the message */
1463 strcpy(nexthop, "");
1464 if (is_valid_node(nexthop, NULL, msg->cm_fields['D']) == 0) {
1465 /* prepend our node to the path */
1466 if (msg->cm_fields['P'] != NULL) {
1467 oldpath = msg->cm_fields['P'];
1468 msg->cm_fields['P'] = NULL;
1471 oldpath = strdup("unknown_user");
1473 size = strlen(oldpath) + SIZ;
1474 msg->cm_fields['P'] = malloc(size);
1475 snprintf(msg->cm_fields['P'], size, "%s!%s",
1476 config.c_nodename, oldpath);
1479 /* serialize the message */
1480 serialize_message(&sermsg, msg);
1483 if (IsEmptyStr(nexthop)) {
1484 strcpy(nexthop, msg->cm_fields['D']);
1491 CtdlLogPrintf(CTDL_DEBUG, "Appending to %s\n", filename);
1492 fp = fopen(filename, "ab");
1499 CtdlLogPrintf(CTDL_ERR, "%s: %s\n", filename, strerror(errno));
1502 CtdlFreeMessage(msg);
1506 else { /* invalid destination node name */
1509 "A message you sent could not be delivered due to an invalid destination node"
1510 " name. Please check the address and try sending the message again.\n");
1519 * Check to see if we already have a copy of this message, and
1520 * abort its processing if so. (We used to post a warning to Aide>
1521 * every time this happened, but the network is now so densely
1522 * connected that it's inevitable.)
1524 if (network_usetable(msg) != 0) {
1525 CtdlFreeMessage(msg);
1529 /* Learn network topology from the path */
1530 if ((msg->cm_fields['N'] != NULL) && (msg->cm_fields['P'] != NULL)) {
1531 network_learn_topology(msg->cm_fields['N'],
1532 msg->cm_fields['P']);
1535 /* Is the sending node giving us a very persuasive suggestion about
1536 * which room this message should be saved in? If so, go with that.
1538 if (msg->cm_fields['C'] != NULL) {
1539 safestrncpy(target_room,
1540 msg->cm_fields['C'],
1541 sizeof target_room);
1544 /* Otherwise, does it have a recipient? If so, validate it... */
1545 else if (msg->cm_fields['R'] != NULL) {
1546 recp = validate_recipients(msg->cm_fields['R'], NULL, 0);
1547 if (recp != NULL) if (recp->num_error != 0) {
1549 "A message you sent could not be delivered due to an invalid address.\n"
1550 "Please check the address and try sending the message again.\n");
1552 free_recipients(recp);
1555 strcpy(target_room, ""); /* no target room if mail */
1558 /* Our last shot at finding a home for this message is to see if
1559 * it has the O field (Originating room) set.
1561 else if (msg->cm_fields['O'] != NULL) {
1562 safestrncpy(target_room,
1563 msg->cm_fields['O'],
1564 sizeof target_room);
1567 /* Strip out fields that are only relevant during transit */
1568 if (msg->cm_fields['D'] != NULL) {
1569 free(msg->cm_fields['D']);
1570 msg->cm_fields['D'] = NULL;
1572 if (msg->cm_fields['C'] != NULL) {
1573 free(msg->cm_fields['C']);
1574 msg->cm_fields['C'] = NULL;
1577 /* save the message into a room */
1578 if (PerformNetprocHooks(msg, target_room) == 0) {
1579 msg->cm_flags = CM_SKIP_HOOKS;
1580 CtdlSubmitMsg(msg, recp, target_room);
1582 CtdlFreeMessage(msg);
1583 free_recipients(recp);
1588 * Process a single message from a single file from the inbound queue
1590 void network_process_message(FILE *fp, long msgstart, long msgend) {
1595 hold_pos = ftell(fp);
1596 size = msgend - msgstart + 1;
1597 buffer = malloc(size);
1598 if (buffer != NULL) {
1599 fseek(fp, msgstart, SEEK_SET);
1600 fread(buffer, size, 1, fp);
1601 network_process_buffer(buffer, size);
1605 fseek(fp, hold_pos, SEEK_SET);
1610 * Process a single file from the inbound queue
1612 void network_process_file(char *filename) {
1614 long msgstart = (-1L);
1615 long msgend = (-1L);
1620 fp = fopen(filename, "rb");
1622 CtdlLogPrintf(CTDL_CRIT, "Error opening %s: %s\n", filename, strerror(errno));
1626 fseek(fp, 0L, SEEK_END);
1627 CtdlLogPrintf(CTDL_INFO, "network: processing %ld bytes from %s\n", ftell(fp), filename);
1630 /* Look for messages in the data stream and break them out */
1631 while (ch = getc(fp), ch >= 0) {
1634 if (msgstart >= 0L) {
1635 msgend = msgcur - 1;
1636 network_process_message(fp, msgstart, msgend);
1644 msgend = msgcur - 1;
1645 if (msgstart >= 0L) {
1646 network_process_message(fp, msgstart, msgend);
1655 * Process anything in the inbound queue
1657 void network_do_spoolin(void) {
1660 struct stat statbuf;
1662 static time_t last_spoolin_mtime = 0L;
1665 * Check the spoolin directory's modification time. If it hasn't
1666 * been touched, we don't need to scan it.
1668 if (stat(ctdl_netin_dir, &statbuf)) return;
1669 if (statbuf.st_mtime == last_spoolin_mtime) {
1670 CtdlLogPrintf(CTDL_DEBUG, "network: nothing in inbound queue\n");
1673 last_spoolin_mtime = statbuf.st_mtime;
1674 CtdlLogPrintf(CTDL_DEBUG, "network: processing inbound queue\n");
1677 * Ok, there's something interesting in there, so scan it.
1679 dp = opendir(ctdl_netin_dir);
1680 if (dp == NULL) return;
1682 while (d = readdir(dp), d != NULL) {
1683 if ((strcmp(d->d_name, ".")) && (strcmp(d->d_name, ".."))) {
1689 network_process_file(filename);
1697 * Delete any files in the outbound queue that were intended
1698 * to be sent to nodes which no longer exist.
1700 void network_purge_spoolout(void) {
1707 dp = opendir(ctdl_netout_dir);
1708 if (dp == NULL) return;
1710 while (d = readdir(dp), d != NULL) {
1711 if (!strcmp(d->d_name, ".") || !strcmp(d->d_name, ".."))
1719 strcpy(nexthop, "");
1720 i = is_valid_node(nexthop, NULL, d->d_name);
1722 if ( (i != 0) || !IsEmptyStr(nexthop) ) {
1733 * receive network spool from the remote system
1735 void receive_spool(int sock, char *remote_nodename) {
1736 long download_len = 0L;
1737 long bytes_received = 0L;
1738 long bytes_copied = 0L;
1740 static char pbuf[IGNET_PACKET_SIZE];
1741 char tempfilename[PATH_MAX];
1742 char filename[PATH_MAX];
1746 CtdlMakeTempFileName(tempfilename, sizeof tempfilename);
1747 if (sock_puts(sock, "NDOP") < 0) return;
1748 if (sock_getln(sock, buf, sizeof buf) < 0) return;
1749 CtdlLogPrintf(CTDL_DEBUG, "<%s\n", buf);
1750 if (buf[0] != '2') {
1753 download_len = extract_long(&buf[4], 0);
1755 bytes_received = 0L;
1756 fp = fopen(tempfilename, "w");
1758 CtdlLogPrintf(CTDL_CRIT, "cannot open download file locally: %s\n",
1763 while (bytes_received < download_len) {
1765 * If shutting down we can exit here and unlink the temp file.
1766 * this shouldn't loose us any messages.
1768 if (CtdlThreadCheckStop())
1771 unlink(tempfilename);
1774 snprintf(buf, sizeof buf, "READ %ld|%ld",
1776 ((download_len - bytes_received > IGNET_PACKET_SIZE)
1777 ? IGNET_PACKET_SIZE : (download_len - bytes_received)));
1778 if (sock_puts(sock, buf) < 0) {
1780 unlink(tempfilename);
1783 if (sock_getln(sock, buf, sizeof buf) < 0) {
1785 unlink(tempfilename);
1788 if (buf[0] == '6') {
1789 plen = extract_long(&buf[4], 0);
1790 if (sock_read(sock, pbuf, plen, 1) < 0) {
1792 unlink(tempfilename);
1795 fwrite((char *) pbuf, plen, 1, fp);
1796 bytes_received = bytes_received + plen;
1801 /** Last chance for shutdown exit */
1802 if (CtdlThreadCheckStop())
1804 unlink(tempfilename);
1807 if (sock_puts(sock, "CLOS") < 0) {
1808 unlink(tempfilename);
1812 * From here on we must complete or messages will get lost
1814 if (sock_getln(sock, buf, sizeof buf) < 0) {
1815 unlink(tempfilename);
1818 if (download_len > 0) {
1819 CtdlLogPrintf(CTDL_NOTICE, "Received %ld octets from <%s>\n", download_len, remote_nodename);
1821 CtdlLogPrintf(CTDL_DEBUG, "%s\n", buf);
1823 /* Now copy the temp file to its permanent location.
1824 * (We copy instead of link because they may be on different filesystems)
1826 begin_critical_section(S_NETSPOOL);
1834 fp = fopen(tempfilename, "r");
1836 newfp = fopen(filename, "w");
1837 if (newfp != NULL) {
1839 while (bytes_copied < download_len) {
1840 plen = download_len - bytes_copied;
1841 if (plen > sizeof buf) {
1844 fread(buf, plen, 1, fp);
1845 fwrite(buf, plen, 1, newfp);
1846 bytes_copied += plen;
1852 end_critical_section(S_NETSPOOL);
1853 unlink(tempfilename);
1859 * transmit network spool to the remote system
1861 void transmit_spool(int sock, char *remote_nodename)
1866 long bytes_to_write, thisblock, bytes_written;
1870 if (sock_puts(sock, "NUOP") < 0) return;
1871 if (sock_getln(sock, buf, sizeof buf) < 0) return;
1872 CtdlLogPrintf(CTDL_DEBUG, "<%s\n", buf);
1873 if (buf[0] != '2') {
1877 snprintf(sfname, sizeof sfname,
1881 fd = open(sfname, O_RDONLY);
1883 if (errno != ENOENT) {
1884 CtdlLogPrintf(CTDL_CRIT, "cannot open upload file locally: %s\n",
1890 while (plen = (long) read(fd, pbuf, IGNET_PACKET_SIZE), plen > 0L) {
1891 bytes_to_write = plen;
1892 while (bytes_to_write > 0L) {
1893 /** Exit if shutting down */
1894 if (CtdlThreadCheckStop())
1900 snprintf(buf, sizeof buf, "WRIT %ld", bytes_to_write);
1901 if (sock_puts(sock, buf) < 0) {
1905 if (sock_getln(sock, buf, sizeof buf) < 0) {
1909 thisblock = atol(&buf[4]);
1910 if (buf[0] == '7') {
1911 if (sock_write(sock, pbuf,
1912 (int) thisblock) < 0) {
1916 bytes_to_write -= thisblock;
1917 bytes_written += thisblock;
1926 /** Last chance for shutdown exit */
1927 if(CtdlThreadCheckStop())
1930 if (sock_puts(sock, "UCLS 1") < 0) return;
1932 * From here on we must complete or messages will get lost
1934 if (sock_getln(sock, buf, sizeof buf) < 0) return;
1935 CtdlLogPrintf(CTDL_NOTICE, "Sent %ld octets to <%s>\n",
1936 bytes_written, remote_nodename);
1937 CtdlLogPrintf(CTDL_DEBUG, "<%s\n", buf);
1938 if (buf[0] == '2') {
1939 CtdlLogPrintf(CTDL_DEBUG, "Removing <%s>\n", sfname);
1947 * Poll one Citadel node (called by network_poll_other_citadel_nodes() below)
1949 void network_poll_node(char *node, char *secret, char *host, char *port) {
1953 if (network_talking_to(node, NTT_CHECK)) return;
1954 network_talking_to(node, NTT_ADD);
1955 CtdlLogPrintf(CTDL_NOTICE, "Connecting to <%s> at %s:%s\n", node, host, port);
1957 sock = sock_connect(host, port, "tcp");
1959 CtdlLogPrintf(CTDL_ERR, "Could not connect: %s\n", strerror(errno));
1960 network_talking_to(node, NTT_REMOVE);
1964 CtdlLogPrintf(CTDL_DEBUG, "Connected!\n");
1966 /* Read the server greeting */
1967 if (sock_getln(sock, buf, sizeof buf) < 0) goto bail;
1968 CtdlLogPrintf(CTDL_DEBUG, ">%s\n", buf);
1970 /* Identify ourselves */
1971 snprintf(buf, sizeof buf, "NETP %s|%s", config.c_nodename, secret);
1972 CtdlLogPrintf(CTDL_DEBUG, "<%s\n", buf);
1973 if (sock_puts(sock, buf) <0) goto bail;
1974 if (sock_getln(sock, buf, sizeof buf) < 0) goto bail;
1975 CtdlLogPrintf(CTDL_DEBUG, ">%s\n", buf);
1976 if (buf[0] != '2') goto bail;
1978 /* At this point we are authenticated. */
1979 if (!CtdlThreadCheckStop())
1980 receive_spool(sock, node);
1981 if (!CtdlThreadCheckStop())
1982 transmit_spool(sock, node);
1984 sock_puts(sock, "QUIT");
1985 bail: sock_close(sock);
1986 network_talking_to(node, NTT_REMOVE);
1992 * Poll other Citadel nodes and transfer inbound/outbound network data.
1993 * Set "full" to nonzero to force a poll of every node, or to zero to poll
1994 * only nodes to which we have data to send.
1996 void network_poll_other_citadel_nodes(int full_poll) {
2004 char spoolfile[256];
2006 if (working_ignetcfg == NULL) {
2007 CtdlLogPrintf(CTDL_DEBUG, "No nodes defined - not polling\n");
2011 /* Use the string tokenizer to grab one line at a time */
2012 for (i=0; i<num_tokens(working_ignetcfg, '\n'); ++i) {
2013 if(CtdlThreadCheckStop())
2015 extract_token(linebuf, working_ignetcfg, i, '\n', sizeof linebuf);
2016 extract_token(node, linebuf, 0, '|', sizeof node);
2017 extract_token(secret, linebuf, 1, '|', sizeof secret);
2018 extract_token(host, linebuf, 2, '|', sizeof host);
2019 extract_token(port, linebuf, 3, '|', sizeof port);
2020 if ( !IsEmptyStr(node) && !IsEmptyStr(secret)
2021 && !IsEmptyStr(host) && !IsEmptyStr(port)) {
2029 if (access(spoolfile, R_OK) == 0) {
2034 network_poll_node(node, secret, host, port);
2045 * It's ok if these directories already exist. Just fail silently.
2047 void create_spool_dirs(void) {
2048 mkdir(ctdl_spool_dir, 0700);
2049 chown(ctdl_spool_dir, CTDLUID, (-1));
2050 mkdir(ctdl_netin_dir, 0700);
2051 chown(ctdl_netin_dir, CTDLUID, (-1));
2052 mkdir(ctdl_netout_dir, 0700);
2053 chown(ctdl_netout_dir, CTDLUID, (-1));
2061 * network_do_queue()
2063 * Run through the rooms doing various types of network stuff.
2065 void *network_do_queue(void *args) {
2066 static time_t last_run = 0L;
2067 struct RoomProcList *ptr;
2068 int full_processing = 1;
2069 struct CitContext networkerCC;
2071 /* Give the networker its own private CitContext */
2072 memset(&networkerCC, 0, sizeof(struct CitContext));
2073 networkerCC.internal_pgm = 1;
2074 networkerCC.cs_pid = 0;
2075 pthread_setspecific(MyConKey, (void *)&networkerCC );
2078 * Run the full set of processing tasks no more frequently
2079 * than once every n seconds
2081 if ( (time(NULL) - last_run) < config.c_net_freq ) {
2082 full_processing = 0;
2083 CtdlLogPrintf(CTDL_DEBUG, "Network full processing in %ld seconds.\n", config.c_net_freq - (time(NULL)- last_run));
2087 * This is a simple concurrency check to make sure only one queue run
2088 * is done at a time. We could do this with a mutex, but since we
2089 * don't really require extremely fine granularity here, we'll do it
2090 * with a static variable instead.
2092 if (doing_queue) return NULL;
2095 /* Load the IGnet Configuration into memory */
2096 load_working_ignetcfg();
2099 * Poll other Citadel nodes. Maybe. If "full_processing" is set
2100 * then we poll everyone. Otherwise we only poll nodes we have stuff
2103 network_poll_other_citadel_nodes(full_processing);
2106 * Load the network map and filter list into memory.
2109 filterlist = load_filter_list();
2112 * Go ahead and run the queue
2114 if (full_processing && !CtdlThreadCheckStop()) {
2115 CtdlLogPrintf(CTDL_DEBUG, "network: loading outbound queue\n");
2116 ForEachRoom(network_queue_room, NULL);
2119 if (rplist != NULL) {
2120 CtdlLogPrintf(CTDL_DEBUG, "network: running outbound queue\n");
2121 while (rplist != NULL && !CtdlThreadCheckStop()) {
2122 char spoolroomname[ROOMNAMELEN];
2123 safestrncpy(spoolroomname, rplist->name, sizeof spoolroomname);
2124 begin_critical_section(S_RPLIST);
2126 /* pop this record off the list */
2128 rplist = rplist->next;
2131 /* invalidate any duplicate entries to prevent double processing */
2132 for (ptr=rplist; ptr!=NULL; ptr=ptr->next) {
2133 if (!strcasecmp(ptr->name, spoolroomname)) {
2138 end_critical_section(S_RPLIST);
2139 if (spoolroomname[0] != 0) {
2140 network_spoolout_room(spoolroomname);
2145 /* If there is anything in the inbound queue, process it */
2146 if (!CtdlThreadCheckStop())
2147 network_do_spoolin();
2149 /* Save the network map back to disk */
2150 write_network_map();
2152 /* Free the filter list in memory */
2153 free_filter_list(filterlist);
2156 network_purge_spoolout();
2158 CtdlLogPrintf(CTDL_DEBUG, "network: queue run completed\n");
2160 if (full_processing) {
2161 last_run = time(NULL);
2165 if (!CtdlThreadCheckStop()) // Only reschedule if system is not stopping
2166 CtdlThreadSchedule("IGnet Network", CTDLTHREAD_BIGSTACK, network_do_queue, NULL, time(NULL) + 60);
2168 CtdlLogPrintf(CTDL_DEBUG, "network: Task STOPPED.\n");
2174 * cmd_netp() - authenticate to the server as another Citadel node polling
2175 * for network traffic
2177 void cmd_netp(char *cmdbuf)
2187 extract_token(node, cmdbuf, 0, '|', sizeof node);
2188 extract_token(pass, cmdbuf, 1, '|', sizeof pass);
2191 CtdlLogPrintf(CTDL_WARNING, "Network node <%s> refused - spooling", node);
2192 cprintf("%d spooling - try again in a few minutes\n",
2193 ERROR + RESOURCE_BUSY);
2197 /* load the IGnet Configuration to check node validity */
2198 load_working_ignetcfg();
2199 v = is_valid_node(nexthop, secret, node);
2202 CtdlLogPrintf(CTDL_WARNING, "Unknown node <%s>\n", node);
2203 cprintf("%d authentication failed\n",
2204 ERROR + PASSWORD_REQUIRED);
2208 if (strcasecmp(pass, secret)) {
2209 CtdlLogPrintf(CTDL_WARNING, "Bad password for network node <%s>", node);
2210 cprintf("%d authentication failed\n", ERROR + PASSWORD_REQUIRED);
2214 if (network_talking_to(node, NTT_CHECK)) {
2215 CtdlLogPrintf(CTDL_WARNING, "Duplicate session for network node <%s>", node);
2216 cprintf("%d Already talking to %s right now\n", ERROR + RESOURCE_BUSY, node);
2220 safestrncpy(CC->net_node, node, sizeof CC->net_node);
2221 network_talking_to(node, NTT_ADD);
2222 CtdlLogPrintf(CTDL_NOTICE, "Network node <%s> logged in\n", CC->net_node);
2223 cprintf("%d authenticated as network node '%s'\n", CIT_OK,
2227 int network_room_handler (struct ctdlroom *room)
2229 network_queue_room(room, NULL);
2234 * Module entry point
2236 CTDL_MODULE_INIT(network)
2240 create_spool_dirs();
2241 CtdlRegisterProtoHook(cmd_gnet, "GNET", "Get network config");
2242 CtdlRegisterProtoHook(cmd_snet, "SNET", "Set network config");
2243 CtdlRegisterProtoHook(cmd_netp, "NETP", "Identify as network poller");
2244 CtdlRegisterProtoHook(cmd_nsyn, "NSYN", "Synchronize room to node");
2245 CtdlRegisterRoomHook(network_room_handler);
2246 CtdlRegisterCleanupHook(destroy_network_queue_room);
2249 CtdlThreadSchedule("IGnet Network", CTDLTHREAD_BIGSTACK, network_do_queue, NULL, 0);
2250 /* return our Subversion id for the Log */