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 "sysdep_decls.h"
54 #include "citserver.h"
57 #include "serv_extensions.h"
64 #include "internet_addressing.h"
65 #include "serv_network.h"
66 #include "clientsocket.h"
68 #include "citadel_dirs.h"
74 /* Nonzero while we are doing network processing */
75 static int doing_queue = 0;
78 * When we do network processing, it's accomplished in two passes; one to
79 * gather a list of rooms and one to actually do them. It's ok that rplist
80 * is global; we have a mutex that keeps it safe.
82 struct RoomProcList *rplist = NULL;
85 * We build a map of network nodes during processing.
87 struct NetMap *the_netmap = NULL;
88 int netmap_changed = 0;
89 char *working_ignetcfg = NULL;
92 * Load or refresh the Citadel network (IGnet) configuration for this node.
94 void load_working_ignetcfg(void) {
98 cfg = CtdlGetSysConfig(IGNETCFG);
103 oldcfg = working_ignetcfg;
104 working_ignetcfg = cfg;
105 if (oldcfg != NULL) {
115 * Keep track of what messages to reject
117 struct FilterList *load_filter_list(void) {
118 char *serialized_list = NULL;
121 struct FilterList *newlist = NULL;
122 struct FilterList *nptr;
124 serialized_list = CtdlGetSysConfig(FILTERLIST);
125 if (serialized_list == NULL) return(NULL); /* if null, no entries */
127 /* Use the string tokenizer to grab one line at a time */
128 for (i=0; i<num_tokens(serialized_list, '\n'); ++i) {
129 extract_token(buf, serialized_list, i, '\n', sizeof buf);
130 nptr = (struct FilterList *) malloc(sizeof(struct FilterList));
131 extract_token(nptr->fl_user, buf, 0, '|', sizeof nptr->fl_user);
132 striplt(nptr->fl_user);
133 extract_token(nptr->fl_room, buf, 1, '|', sizeof nptr->fl_room);
134 striplt(nptr->fl_room);
135 extract_token(nptr->fl_node, buf, 2, '|', sizeof nptr->fl_node);
136 striplt(nptr->fl_node);
138 /* Cowardly refuse to add an any/any/any entry that would
139 * end up filtering every single message.
141 if (strlen(nptr->fl_user) + strlen(nptr->fl_room)
142 + strlen(nptr->fl_node) == 0) {
146 nptr->next = newlist;
151 free(serialized_list);
156 void free_filter_list(struct FilterList *fl) {
157 if (fl == NULL) return;
158 free_filter_list(fl->next);
165 * Check the use table. This is a list of messages which have recently
166 * arrived on the system. It is maintained and queried to prevent the same
167 * message from being entered into the database multiple times if it happens
168 * to arrive multiple times by accident.
170 int network_usetable(struct CtdlMessage *msg) {
173 struct cdbdata *cdbut;
176 /* Bail out if we can't generate a message ID */
180 if (msg->cm_fields['I'] == NULL) {
183 if (strlen(msg->cm_fields['I']) == 0) {
187 /* Generate the message ID */
188 strcpy(msgid, msg->cm_fields['I']);
189 if (haschar(msgid, '@') == 0) {
191 if (msg->cm_fields['N'] != NULL) {
192 strcat(msgid, msg->cm_fields['N']);
199 cdbut = cdb_fetch(CDB_USETABLE, msgid, strlen(msgid));
205 /* If we got to this point, it's unique: add it. */
206 strcpy(ut.ut_msgid, msgid);
207 ut.ut_timestamp = time(NULL);
208 cdb_store(CDB_USETABLE, msgid, strlen(msgid),
209 &ut, sizeof(struct UseTable) );
215 * Read the network map from its configuration file into memory.
217 void read_network_map(void) {
218 char *serialized_map = NULL;
221 struct NetMap *nmptr;
223 serialized_map = CtdlGetSysConfig(IGNETMAP);
224 if (serialized_map == NULL) return; /* if null, no entries */
226 /* Use the string tokenizer to grab one line at a time */
227 for (i=0; i<num_tokens(serialized_map, '\n'); ++i) {
228 extract_token(buf, serialized_map, i, '\n', sizeof buf);
229 nmptr = (struct NetMap *) malloc(sizeof(struct NetMap));
230 extract_token(nmptr->nodename, buf, 0, '|', sizeof nmptr->nodename);
231 nmptr->lastcontact = extract_long(buf, 1);
232 extract_token(nmptr->nexthop, buf, 2, '|', sizeof nmptr->nexthop);
233 nmptr->next = the_netmap;
237 free(serialized_map);
243 * Write the network map from memory back to the configuration file.
245 void write_network_map(void) {
246 char *serialized_map = NULL;
247 struct NetMap *nmptr;
250 if (netmap_changed) {
251 serialized_map = strdup("");
253 if (the_netmap != NULL) {
254 for (nmptr = the_netmap; nmptr != NULL; nmptr = nmptr->next) {
255 serialized_map = realloc(serialized_map,
256 (strlen(serialized_map)+SIZ) );
257 if (strlen(nmptr->nodename) > 0) {
258 snprintf(&serialized_map[strlen(serialized_map)],
262 (long)nmptr->lastcontact,
268 CtdlPutSysConfig(IGNETMAP, serialized_map);
269 free(serialized_map);
272 /* Now free the list */
273 while (the_netmap != NULL) {
274 nmptr = the_netmap->next;
284 * Check the network map and determine whether the supplied node name is
285 * valid. If it is not a neighbor node, supply the name of a neighbor node
286 * which is the next hop. If it *is* a neighbor node, we also fill in the
289 int is_valid_node(char *nexthop, char *secret, char *node) {
294 struct NetMap *nmptr;
301 * First try the neighbor nodes
303 if (working_ignetcfg == NULL) {
304 lprintf(CTDL_ERR, "working_ignetcfg is NULL!\n");
305 if (nexthop != NULL) {
312 if (nexthop != NULL) {
316 /* Use the string tokenizer to grab one line at a time */
317 for (i=0; i<num_tokens(working_ignetcfg, '\n'); ++i) {
318 extract_token(linebuf, working_ignetcfg, i, '\n', sizeof linebuf);
319 extract_token(buf, linebuf, 0, '|', sizeof buf);
320 if (!strcasecmp(buf, node)) {
321 if (nexthop != NULL) {
324 if (secret != NULL) {
325 extract_token(secret, linebuf, 1, '|', 256);
332 return(retval); /* yup, it's a direct neighbor */
336 * If we get to this point we have to see if we know the next hop
338 if (the_netmap != NULL) {
339 for (nmptr = the_netmap; nmptr != NULL; nmptr = nmptr->next) {
340 if (!strcasecmp(nmptr->nodename, node)) {
341 if (nexthop != NULL) {
342 strcpy(nexthop, nmptr->nexthop);
350 * If we get to this point, the supplied node name is bogus.
352 lprintf(CTDL_ERR, "Invalid node name <%s>\n", node);
360 void cmd_gnet(char *argbuf) {
365 if (CtdlAccessCheck(ac_room_aide)) return;
366 assoc_file_name(filename, sizeof filename, &CC->room, ctdl_netcfg_dir);
367 cprintf("%d Network settings for room #%ld <%s>\n",
369 CC->room.QRnumber, CC->room.QRname);
371 fp = fopen(filename, "r");
373 while (fgets(buf, sizeof buf, fp) != NULL) {
374 buf[strlen(buf)-1] = 0;
375 cprintf("%s\n", buf);
384 void cmd_snet(char *argbuf) {
385 char tempfilename[SIZ];
392 if (CtdlAccessCheck(ac_room_aide)) return;
393 CtdlMakeTempFileName(tempfilename, sizeof tempfilename);
394 assoc_file_name(filename, sizeof filename, &CC->room, ctdl_netcfg_dir);
396 fp = fopen(tempfilename, "w");
398 cprintf("%d Cannot open %s: %s\n",
399 ERROR + INTERNAL_ERROR,
404 cprintf("%d %s\n", SEND_LISTING, tempfilename);
405 while (client_getln(buf, sizeof buf), strcmp(buf, "000")) {
406 fprintf(fp, "%s\n", buf);
410 /* Now copy the temp file to its permanent location
411 * (We use /bin/mv instead of link() because they may be on
412 * different filesystems)
415 snprintf(buf, sizeof buf, "/bin/mv %s %s", tempfilename, filename);
416 begin_critical_section(S_NETCONFIGS);
418 end_critical_section(S_NETCONFIGS);
423 * Deliver digest messages
425 void network_deliver_digest(struct SpoolControl *sc) {
428 struct CtdlMessage *msg = NULL;
432 size_t instr_len = SIZ;
433 struct CtdlMessage *imsg = NULL;
434 struct namelist *nptr;
436 if (sc->num_msgs_spooled < 1) {
437 fclose(sc->digestfp);
442 msg = malloc(sizeof(struct CtdlMessage));
443 memset(msg, 0, sizeof(struct CtdlMessage));
444 msg->cm_magic = CTDLMESSAGE_MAGIC;
445 msg->cm_format_type = FMT_RFC822;
446 msg->cm_anon_type = MES_NORMAL;
448 sprintf(buf, "%ld", time(NULL));
449 msg->cm_fields['T'] = strdup(buf);
450 msg->cm_fields['A'] = strdup(CC->room.QRname);
451 snprintf(buf, sizeof buf, "[%s]", CC->room.QRname);
452 msg->cm_fields['U'] = strdup(buf);
453 sprintf(buf, "room_%s@%s", CC->room.QRname, config.c_fqdn);
454 for (i=0; i<strlen(buf); ++i) {
455 if (isspace(buf[i])) buf[i]='_';
456 buf[i] = tolower(buf[i]);
458 msg->cm_fields['F'] = strdup(buf);
459 msg->cm_fields['R'] = strdup(buf);
462 * Go fetch the contents of the digest
464 fseek(sc->digestfp, 0L, SEEK_END);
465 msglen = ftell(sc->digestfp);
467 msg->cm_fields['M'] = malloc(msglen + 1);
468 fseek(sc->digestfp, 0L, SEEK_SET);
469 fread(msg->cm_fields['M'], (size_t)msglen, 1, sc->digestfp);
470 msg->cm_fields['M'][msglen] = 0;
472 fclose(sc->digestfp);
475 msgnum = CtdlSubmitMsg(msg, NULL, SMTP_SPOOLOUT_ROOM);
476 CtdlFreeMessage(msg);
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 instr_len = instr_len + strlen(nptr->name) + 2;
490 lprintf(CTDL_DEBUG, "Generating delivery instructions\n");
491 instr = malloc(instr_len);
493 lprintf(CTDL_EMERG, "Cannot allocate %ld bytes for instr...\n",
497 snprintf(instr, instr_len,
498 "Content-type: %s\n\nmsgid|%ld\nsubmitted|%ld\n"
499 "bounceto|postmaster@%s\n" ,
500 SPOOLMIME, msgnum, (long)time(NULL), config.c_fqdn );
502 /* Generate delivery instructions for each recipient */
503 for (nptr = sc->digestrecps; nptr != NULL; nptr = nptr->next) {
504 size_t tmp = strlen(instr);
505 snprintf(&instr[tmp], instr_len - tmp,
506 "remote|%s|0||\n", nptr->name);
510 * Generate a message from the instructions
512 imsg = malloc(sizeof(struct CtdlMessage));
513 memset(imsg, 0, sizeof(struct CtdlMessage));
514 imsg->cm_magic = CTDLMESSAGE_MAGIC;
515 imsg->cm_anon_type = MES_NORMAL;
516 imsg->cm_format_type = FMT_RFC822;
517 imsg->cm_fields['A'] = strdup("Citadel");
518 imsg->cm_fields['M'] = instr;
520 /* Save delivery instructions in spoolout room */
521 CtdlSubmitMsg(imsg, NULL, SMTP_SPOOLOUT_ROOM);
522 CtdlFreeMessage(imsg);
527 * Deliver list messages to everyone on the list ... efficiently
529 void network_deliver_list(struct CtdlMessage *msg, struct SpoolControl *sc) {
532 size_t instr_len = SIZ;
533 struct CtdlMessage *imsg = NULL;
534 struct namelist *nptr;
536 /* Don't do this if there were no recipients! */
537 if (sc->listrecps == NULL) return;
539 /* Save the message to disk... */
540 msgnum = CtdlSubmitMsg(msg, NULL, SMTP_SPOOLOUT_ROOM);
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 instr_len = instr_len + strlen(nptr->name) + 2;
554 lprintf(CTDL_DEBUG, "Generating delivery instructions\n");
555 instr = malloc(instr_len);
557 lprintf(CTDL_EMERG, "Cannot allocate %ld bytes for instr...\n",
561 snprintf(instr, instr_len,
562 "Content-type: %s\n\nmsgid|%ld\nsubmitted|%ld\n"
563 "bounceto|postmaster@%s\n" ,
564 SPOOLMIME, msgnum, (long)time(NULL), config.c_fqdn );
566 /* Generate delivery instructions for each recipient */
567 for (nptr = sc->listrecps; nptr != NULL; nptr = nptr->next) {
568 size_t tmp = strlen(instr);
569 snprintf(&instr[tmp], instr_len - tmp,
570 "remote|%s|0||\n", nptr->name);
574 * Generate a message from the instructions
576 imsg = malloc(sizeof(struct CtdlMessage));
577 memset(imsg, 0, sizeof(struct CtdlMessage));
578 imsg->cm_magic = CTDLMESSAGE_MAGIC;
579 imsg->cm_anon_type = MES_NORMAL;
580 imsg->cm_format_type = FMT_RFC822;
581 imsg->cm_fields['A'] = strdup("Citadel");
582 imsg->cm_fields['M'] = instr;
584 /* Save delivery instructions in spoolout room */
585 CtdlSubmitMsg(imsg, NULL, SMTP_SPOOLOUT_ROOM);
586 CtdlFreeMessage(imsg);
593 * Spools out one message from the list.
595 void network_spool_msg(long msgnum, void *userdata) {
596 struct SpoolControl *sc;
598 char *newpath = NULL;
599 size_t instr_len = SIZ;
600 struct CtdlMessage *msg = NULL;
601 struct namelist *nptr;
602 struct maplist *mptr;
603 struct ser_ret sermsg;
609 int delete_after_send = 0; /* Set to 1 to delete after spooling */
610 int ok_to_participate = 0;
611 struct recptypes *valid;
613 sc = (struct SpoolControl *)userdata;
616 * Process mailing list recipients
619 if (sc->listrecps != NULL) {
620 /* Fetch the message. We're going to need to modify it
621 * in order to insert the [list name] in it, etc.
623 msg = CtdlFetchMessage(msgnum, 1);
626 /* Prepend "[List name]" to the subject */
627 if (msg->cm_fields['U'] == NULL) {
628 msg->cm_fields['U'] = strdup("(no subject)");
630 snprintf(buf, sizeof buf, "[%s] %s", CC->room.QRname, msg->cm_fields['U']);
631 free(msg->cm_fields['U']);
632 msg->cm_fields['U'] = strdup(buf);
634 /* Set the recipient of the list message to the
635 * email address of the room itself.
636 * FIXME ... I want to be able to pick any address
638 if (msg->cm_fields['R'] != NULL) {
639 free(msg->cm_fields['R']);
641 msg->cm_fields['R'] = malloc(256);
642 snprintf(msg->cm_fields['R'], 256,
643 "room_%s@%s", CC->room.QRname,
645 for (i=0; i<strlen(msg->cm_fields['R']); ++i) {
646 if (isspace(msg->cm_fields['R'][i])) {
647 msg->cm_fields['R'][i] = '_';
651 /* Handle delivery */
652 network_deliver_list(msg, sc);
653 CtdlFreeMessage(msg);
658 * Process digest recipients
660 if ((sc->digestrecps != NULL) && (sc->digestfp != NULL)) {
661 msg = CtdlFetchMessage(msgnum, 1);
663 fprintf(sc->digestfp, " -----------------------------------"
664 "------------------------------------"
666 fprintf(sc->digestfp, "From: ");
667 if (msg->cm_fields['A'] != NULL) {
668 fprintf(sc->digestfp, "%s ", msg->cm_fields['A']);
670 if (msg->cm_fields['F'] != NULL) {
671 fprintf(sc->digestfp, "<%s> ", msg->cm_fields['F']);
673 else if (msg->cm_fields['N'] != NULL) {
674 fprintf(sc->digestfp, "@%s ", msg->cm_fields['N']);
676 fprintf(sc->digestfp, "\n");
677 if (msg->cm_fields['U'] != NULL) {
678 fprintf(sc->digestfp, "Subject: %s\n", msg->cm_fields['U']);
681 CC->redirect_buffer = malloc(SIZ);
682 CC->redirect_len = 0;
683 CC->redirect_alloc = SIZ;
685 safestrncpy(CC->preferred_formats, "text/plain", sizeof CC->preferred_formats);
686 CtdlOutputPreLoadedMsg(msg, MT_CITADEL, HEADERS_NONE, 0, 0);
688 striplt(CC->redirect_buffer);
689 fprintf(sc->digestfp, "\n%s\n", CC->redirect_buffer);
691 free(CC->redirect_buffer);
692 CC->redirect_buffer = NULL;
693 CC->redirect_len = 0;
694 CC->redirect_alloc = 0;
696 sc->num_msgs_spooled += 1;
702 * Process client-side list participations for this room
705 if (sc->participates != NULL) {
706 msg = CtdlFetchMessage(msgnum, 1);
709 /* Only send messages which originated on our own Citadel
710 * network, otherwise we'll end up sending the remote
711 * mailing list's messages back to it, which is rude...
713 ok_to_participate = 0;
714 if (msg->cm_fields['N'] != NULL) {
715 if (!strcasecmp(msg->cm_fields['N'], config.c_nodename)) {
716 ok_to_participate = 1;
718 if (is_valid_node(NULL, NULL, msg->cm_fields['N']) == 0) {
719 ok_to_participate = 1;
722 if (ok_to_participate) {
723 if (msg->cm_fields['F'] != NULL) {
724 free(msg->cm_fields['F']);
726 msg->cm_fields['F'] = malloc(SIZ);
727 /* Replace the Internet email address of the actual
728 * author with the email address of the room itself,
729 * so the remote listserv doesn't reject us.
730 * FIXME ... I want to be able to pick any address
732 snprintf(msg->cm_fields['F'], SIZ,
733 "room_%s@%s", CC->room.QRname,
735 for (i=0; i<strlen(msg->cm_fields['F']); ++i) {
736 if (isspace(msg->cm_fields['F'][i])) {
737 msg->cm_fields['F'][i] = '_';
742 * Figure out how big a buffer we need to allocate
744 for (nptr = sc->participates; nptr != NULL; nptr = nptr->next) {
746 if (msg->cm_fields['R'] == NULL) {
747 free(msg->cm_fields['R']);
749 msg->cm_fields['R'] = strdup(nptr->name);
751 valid = validate_recipients(nptr->name);
752 CtdlSubmitMsg(msg, valid, "");
757 CtdlFreeMessage(msg);
762 * Process IGnet push shares
764 msg = CtdlFetchMessage(msgnum, 1);
768 /* Prepend our node name to the Path field whenever
769 * sending a message to another IGnet node
771 if (msg->cm_fields['P'] == NULL) {
772 msg->cm_fields['P'] = strdup("username");
774 newpath_len = strlen(msg->cm_fields['P']) +
775 strlen(config.c_nodename) + 2;
776 newpath = malloc(newpath_len);
777 snprintf(newpath, newpath_len, "%s!%s",
778 config.c_nodename, msg->cm_fields['P']);
779 free(msg->cm_fields['P']);
780 msg->cm_fields['P'] = newpath;
783 * Determine if this message is set to be deleted
784 * after sending out on the network
786 if (msg->cm_fields['S'] != NULL) {
787 if (!strcasecmp(msg->cm_fields['S'], "CANCEL")) {
788 delete_after_send = 1;
792 /* Now send it to every node */
793 if (sc->ignet_push_shares != NULL)
794 for (mptr = sc->ignet_push_shares; mptr != NULL;
799 /* Check for valid node name */
800 if (is_valid_node(NULL, NULL, mptr->remote_nodename) != 0) {
801 lprintf(CTDL_ERR, "Invalid node <%s>\n",
802 mptr->remote_nodename);
806 /* Check for split horizon */
807 lprintf(CTDL_DEBUG, "Path is %s\n", msg->cm_fields['P']);
808 bang = num_tokens(msg->cm_fields['P'], '!');
809 if (bang > 1) for (i=0; i<(bang-1); ++i) {
810 extract_token(buf, msg->cm_fields['P'],
812 if (!strcasecmp(buf, mptr->remote_nodename)) {
817 /* Send the message */
821 * Force the message to appear in the correct room
822 * on the far end by setting the C field correctly
824 if (msg->cm_fields['C'] != NULL) {
825 free(msg->cm_fields['C']);
827 if (strlen(mptr->remote_roomname) > 0) {
828 msg->cm_fields['C'] = strdup(mptr->remote_roomname);
831 msg->cm_fields['C'] = strdup(CC->room.QRname);
834 /* serialize it for transmission */
835 serialize_message(&sermsg, msg);
836 if (sermsg.len > 0) {
838 /* write it to the spool file */
839 snprintf(filename, sizeof filename,"%s/%s",
841 mptr->remote_nodename);
842 lprintf(CTDL_DEBUG, "Appending to %s\n", filename);
843 fp = fopen(filename, "ab");
850 lprintf(CTDL_ERR, "%s: %s\n", filename, strerror(errno));
853 /* free the serialized version */
859 CtdlFreeMessage(msg);
862 /* update lastsent */
863 sc->lastsent = msgnum;
865 /* Delete this message if delete-after-send is set */
866 if (delete_after_send) {
867 CtdlDeleteMessages(CC->room.QRname, &msgnum, 1, "");
874 * Batch up and send all outbound traffic from the current room
876 void network_spoolout_room(char *room_to_spool) {
881 char roomname[ROOMNAMELEN];
884 struct SpoolControl sc;
885 struct namelist *nptr = NULL;
886 struct maplist *mptr = NULL;
889 int skipthisline = 0;
893 * If the room doesn't exist, don't try to perform its networking tasks.
894 * Normally this should never happen, but once in a while maybe a room gets
895 * queued for networking and then deleted before it can happen.
897 if (getroom(&CC->room, room_to_spool) != 0) {
898 lprintf(CTDL_CRIT, "ERROR: cannot load <%s>\n", room_to_spool);
902 memset(&sc, 0, sizeof(struct SpoolControl));
903 assoc_file_name(filename, sizeof filename, &CC->room, ctdl_netcfg_dir);
905 begin_critical_section(S_NETCONFIGS);
907 /* Only do net processing for rooms that have netconfigs */
908 fp = fopen(filename, "r");
910 end_critical_section(S_NETCONFIGS);
914 lprintf(CTDL_INFO, "Networking started for <%s>\n", CC->room.QRname);
916 while (fgets(buf, sizeof buf, fp) != NULL) {
917 buf[strlen(buf)-1] = 0;
919 extract_token(instr, buf, 0, '|', sizeof instr);
920 if (!strcasecmp(instr, "lastsent")) {
921 sc.lastsent = extract_long(buf, 1);
923 else if (!strcasecmp(instr, "listrecp")) {
924 nptr = (struct namelist *)
925 malloc(sizeof(struct namelist));
926 nptr->next = sc.listrecps;
927 extract_token(nptr->name, buf, 1, '|', sizeof nptr->name);
930 else if (!strcasecmp(instr, "participate")) {
931 nptr = (struct namelist *)
932 malloc(sizeof(struct namelist));
933 nptr->next = sc.participates;
934 extract_token(nptr->name, buf, 1, '|', sizeof nptr->name);
935 sc.participates = nptr;
937 else if (!strcasecmp(instr, "digestrecp")) {
938 nptr = (struct namelist *)
939 malloc(sizeof(struct namelist));
940 nptr->next = sc.digestrecps;
941 extract_token(nptr->name, buf, 1, '|', sizeof nptr->name);
942 sc.digestrecps = nptr;
944 else if (!strcasecmp(instr, "ignet_push_share")) {
945 /* by checking each node's validity, we automatically
946 * purge nodes which do not exist from room network
947 * configurations at this time.
949 extract_token(nodename, buf, 1, '|', sizeof nodename);
950 extract_token(roomname, buf, 2, '|', sizeof roomname);
951 strcpy(nexthop, "xxx");
952 if (is_valid_node(nexthop, NULL, nodename) == 0) {
953 if (strlen(nexthop) == 0) {
954 mptr = (struct maplist *)
955 malloc(sizeof(struct maplist));
956 mptr->next = sc.ignet_push_shares;
957 strcpy(mptr->remote_nodename, nodename);
958 strcpy(mptr->remote_roomname, roomname);
959 sc.ignet_push_shares = mptr;
964 /* Preserve 'other' lines ... *unless* they happen to
965 * be subscribe/unsubscribe pendings with expired
969 if (!strncasecmp(buf, "subpending|", 11)) {
970 if (time(NULL) - extract_long(buf, 4) > EXP) {
974 if (!strncasecmp(buf, "unsubpending|", 13)) {
975 if (time(NULL) - extract_long(buf, 3) > EXP) {
980 if (skipthisline == 0) {
981 linesize = strlen(buf);
982 sc.misc = realloc(sc.misc,
983 (miscsize + linesize + 2) );
984 sprintf(&sc.misc[miscsize], "%s\n", buf);
985 miscsize = miscsize + linesize + 1;
993 /* If there are digest recipients, we have to build a digest */
994 if (sc.digestrecps != NULL) {
995 sc.digestfp = tmpfile();
996 fprintf(sc.digestfp, "Content-type: text/plain\n\n");
999 /* Do something useful */
1000 CtdlForEachMessage(MSGS_GT, sc.lastsent, NULL, NULL, NULL,
1001 network_spool_msg, &sc);
1003 /* If we wrote a digest, deliver it and then close it */
1004 snprintf(buf, sizeof buf, "room_%s@%s",
1005 CC->room.QRname, config.c_fqdn);
1006 for (i=0; i<strlen(buf); ++i) {
1007 buf[i] = tolower(buf[i]);
1008 if (isspace(buf[i])) buf[i] = '_';
1010 if (sc.digestfp != NULL) {
1011 fprintf(sc.digestfp, " -----------------------------------"
1012 "------------------------------------"
1014 "You are subscribed to the '%s' "
1016 "To post to the list: %s\n",
1017 CC->room.QRname, buf
1019 network_deliver_digest(&sc); /* deliver and close */
1022 /* Now rewrite the config file */
1023 fp = fopen(filename, "w");
1025 lprintf(CTDL_CRIT, "ERROR: cannot open %s: %s\n",
1026 filename, strerror(errno));
1029 fprintf(fp, "lastsent|%ld\n", sc.lastsent);
1031 /* Write out the listrecps while freeing from memory at the
1032 * same time. Am I clever or what? :)
1034 while (sc.listrecps != NULL) {
1035 fprintf(fp, "listrecp|%s\n", sc.listrecps->name);
1036 nptr = sc.listrecps->next;
1038 sc.listrecps = nptr;
1040 /* Do the same for digestrecps */
1041 while (sc.digestrecps != NULL) {
1042 fprintf(fp, "digestrecp|%s\n", sc.digestrecps->name);
1043 nptr = sc.digestrecps->next;
1044 free(sc.digestrecps);
1045 sc.digestrecps = nptr;
1047 /* Do the same for participates */
1048 while (sc.participates != NULL) {
1049 fprintf(fp, "participate|%s\n", sc.participates->name);
1050 nptr = sc.participates->next;
1051 free(sc.participates);
1052 sc.participates = nptr;
1054 while (sc.ignet_push_shares != NULL) {
1055 /* by checking each node's validity, we automatically
1056 * purge nodes which do not exist from room network
1057 * configurations at this time.
1059 if (is_valid_node(NULL, NULL, sc.ignet_push_shares->remote_nodename) == 0) {
1061 fprintf(fp, "ignet_push_share|%s",
1062 sc.ignet_push_shares->remote_nodename);
1063 if (strlen(sc.ignet_push_shares->remote_roomname) > 0) {
1064 fprintf(fp, "|%s", sc.ignet_push_shares->remote_roomname);
1067 mptr = sc.ignet_push_shares->next;
1068 free(sc.ignet_push_shares);
1069 sc.ignet_push_shares = mptr;
1071 if (sc.misc != NULL) {
1072 fwrite(sc.misc, strlen(sc.misc), 1, fp);
1078 end_critical_section(S_NETCONFIGS);
1084 * Send the *entire* contents of the current room to one specific network node,
1085 * ignoring anything we know about which messages have already undergone
1086 * network processing. This can be used to bring a new node into sync.
1088 int network_sync_to(char *target_node) {
1089 struct SpoolControl sc;
1090 int num_spooled = 0;
1099 /* Grab the configuration line we're looking for */
1100 assoc_file_name(filename, sizeof filename, &CC->room, ctdl_netcfg_dir);
1101 begin_critical_section(S_NETCONFIGS);
1102 fp = fopen(filename, "r");
1104 end_critical_section(S_NETCONFIGS);
1107 while (fgets(buf, sizeof buf, fp) != NULL) {
1108 buf[strlen(buf)-1] = 0;
1109 extract_token(sc_type, buf, 0, '|', sizeof sc_type);
1110 extract_token(sc_node, buf, 1, '|', sizeof sc_node);
1111 extract_token(sc_room, buf, 2, '|', sizeof sc_room);
1112 if ( (!strcasecmp(sc_type, "ignet_push_share"))
1113 && (!strcasecmp(sc_node, target_node)) ) {
1116 /* Concise syntax because we don't need a full linked-list */
1117 memset(&sc, 0, sizeof(struct SpoolControl));
1118 sc.ignet_push_shares = (struct maplist *)
1119 malloc(sizeof(struct maplist));
1120 sc.ignet_push_shares->next = NULL;
1121 safestrncpy(sc.ignet_push_shares->remote_nodename,
1123 sizeof sc.ignet_push_shares->remote_nodename);
1124 safestrncpy(sc.ignet_push_shares->remote_roomname,
1126 sizeof sc.ignet_push_shares->remote_roomname);
1130 end_critical_section(S_NETCONFIGS);
1132 if (!found_node) return(-1);
1134 /* Send ALL messages */
1135 num_spooled = CtdlForEachMessage(MSGS_ALL, 0L, NULL, NULL, NULL,
1136 network_spool_msg, &sc);
1138 /* Concise cleanup because we know there's only one node in the sc */
1139 free(sc.ignet_push_shares);
1141 lprintf(CTDL_NOTICE, "Synchronized %d messages to <%s>\n",
1142 num_spooled, target_node);
1143 return(num_spooled);
1148 * Implements the NSYN command
1150 void cmd_nsyn(char *argbuf) {
1152 char target_node[256];
1154 if (CtdlAccessCheck(ac_aide)) return;
1156 extract_token(target_node, argbuf, 0, '|', sizeof target_node);
1157 num_spooled = network_sync_to(target_node);
1158 if (num_spooled >= 0) {
1159 cprintf("%d Spooled %d messages.\n", CIT_OK, num_spooled);
1162 cprintf("%d No such room/node share exists.\n",
1163 ERROR + ROOM_NOT_FOUND);
1170 * Batch up and send all outbound traffic from the current room
1172 void network_queue_room(struct ctdlroom *qrbuf, void *data) {
1173 struct RoomProcList *ptr;
1175 ptr = (struct RoomProcList *) malloc(sizeof (struct RoomProcList));
1176 if (ptr == NULL) return;
1178 safestrncpy(ptr->name, qrbuf->QRname, sizeof ptr->name);
1179 begin_critical_section(S_RPLIST);
1182 end_critical_section(S_RPLIST);
1185 void destroy_network_queue_room(void)
1187 struct RoomProcList *cur, *p;
1190 begin_critical_section(S_RPLIST);
1198 end_critical_section(S_RPLIST);
1203 * Learn topology from path fields
1205 void network_learn_topology(char *node, char *path) {
1207 struct NetMap *nmptr;
1209 strcpy(nexthop, "");
1211 if (num_tokens(path, '!') < 3) return;
1212 for (nmptr = the_netmap; nmptr != NULL; nmptr = nmptr->next) {
1213 if (!strcasecmp(nmptr->nodename, node)) {
1214 extract_token(nmptr->nexthop, path, 0, '!', sizeof nmptr->nexthop);
1215 nmptr->lastcontact = time(NULL);
1221 /* If we got here then it's not in the map, so add it. */
1222 nmptr = (struct NetMap *) malloc(sizeof (struct NetMap));
1223 strcpy(nmptr->nodename, node);
1224 nmptr->lastcontact = time(NULL);
1225 extract_token(nmptr->nexthop, path, 0, '!', sizeof nmptr->nexthop);
1226 nmptr->next = the_netmap;
1235 * Bounce a message back to the sender
1237 void network_bounce(struct CtdlMessage *msg, char *reason) {
1238 char *oldpath = NULL;
1240 char bouncesource[SIZ];
1241 char recipient[SIZ];
1242 struct recptypes *valid = NULL;
1243 char force_room[ROOMNAMELEN];
1244 static int serialnum = 0;
1247 lprintf(CTDL_DEBUG, "entering network_bounce()\n");
1249 if (msg == NULL) return;
1251 snprintf(bouncesource, sizeof bouncesource, "%s@%s", BOUNCESOURCE, config.c_nodename);
1254 * Give it a fresh message ID
1256 if (msg->cm_fields['I'] != NULL) {
1257 free(msg->cm_fields['I']);
1259 snprintf(buf, sizeof buf, "%ld.%04lx.%04x@%s",
1260 (long)time(NULL), (long)getpid(), ++serialnum, config.c_fqdn);
1261 msg->cm_fields['I'] = strdup(buf);
1264 * FIXME ... right now we're just sending a bounce; we really want to
1265 * include the text of the bounced message.
1267 if (msg->cm_fields['M'] != NULL) {
1268 free(msg->cm_fields['M']);
1270 msg->cm_fields['M'] = strdup(reason);
1271 msg->cm_format_type = 0;
1274 * Turn the message around
1276 if (msg->cm_fields['R'] == NULL) {
1277 free(msg->cm_fields['R']);
1280 if (msg->cm_fields['D'] == NULL) {
1281 free(msg->cm_fields['D']);
1284 snprintf(recipient, sizeof recipient, "%s@%s",
1285 msg->cm_fields['A'], msg->cm_fields['N']);
1287 if (msg->cm_fields['A'] == NULL) {
1288 free(msg->cm_fields['A']);
1291 if (msg->cm_fields['N'] == NULL) {
1292 free(msg->cm_fields['N']);
1295 if (msg->cm_fields['U'] == NULL) {
1296 free(msg->cm_fields['U']);
1299 msg->cm_fields['A'] = strdup(BOUNCESOURCE);
1300 msg->cm_fields['N'] = strdup(config.c_nodename);
1301 msg->cm_fields['U'] = strdup("Delivery Status Notification (Failure)");
1303 /* prepend our node to the path */
1304 if (msg->cm_fields['P'] != NULL) {
1305 oldpath = msg->cm_fields['P'];
1306 msg->cm_fields['P'] = NULL;
1309 oldpath = strdup("unknown_user");
1311 size = strlen(oldpath) + SIZ;
1312 msg->cm_fields['P'] = malloc(size);
1313 snprintf(msg->cm_fields['P'], size, "%s!%s", config.c_nodename, oldpath);
1316 /* Now submit the message */
1317 valid = validate_recipients(recipient);
1318 if (valid != NULL) if (valid->num_error != 0) {
1322 if ( (valid == NULL) || (!strcasecmp(recipient, bouncesource)) ) {
1323 strcpy(force_room, config.c_aideroom);
1326 strcpy(force_room, "");
1328 if ( (valid == NULL) && (strlen(force_room) == 0) ) {
1329 strcpy(force_room, config.c_aideroom);
1331 CtdlSubmitMsg(msg, valid, force_room);
1334 if (valid != NULL) free(valid);
1335 CtdlFreeMessage(msg);
1336 lprintf(CTDL_DEBUG, "leaving network_bounce()\n");
1343 * Process a buffer containing a single message from a single file
1344 * from the inbound queue
1346 void network_process_buffer(char *buffer, long size) {
1347 struct CtdlMessage *msg = NULL;
1350 struct recptypes *recp = NULL;
1351 char target_room[ROOMNAMELEN];
1352 struct ser_ret sermsg;
1353 char *oldpath = NULL;
1357 unsigned char firstbyte;
1358 unsigned char lastbyte;
1360 /* Validate just a little bit. First byte should be FF and
1361 * last byte should be 00.
1363 memcpy(&firstbyte, &buffer[0], 1);
1364 memcpy(&lastbyte, &buffer[size-1], 1);
1365 if ( (firstbyte != 255) || (lastbyte != 0) ) {
1366 lprintf(CTDL_ERR, "Corrupt message! Ignoring.\n");
1370 /* Set default target room to trash */
1371 strcpy(target_room, TWITROOM);
1373 /* Load the message into memory */
1374 msg = (struct CtdlMessage *) malloc(sizeof(struct CtdlMessage));
1375 memset(msg, 0, sizeof(struct CtdlMessage));
1376 msg->cm_magic = CTDLMESSAGE_MAGIC;
1377 msg->cm_anon_type = buffer[1];
1378 msg->cm_format_type = buffer[2];
1380 for (pos = 3; pos < size; ++pos) {
1381 field = buffer[pos];
1382 msg->cm_fields[field] = strdup(&buffer[pos+1]);
1383 pos = pos + strlen(&buffer[(int)pos]);
1386 /* Check for message routing */
1387 if (msg->cm_fields['D'] != NULL) {
1388 if (strcasecmp(msg->cm_fields['D'], config.c_nodename)) {
1390 /* route the message */
1391 strcpy(nexthop, "");
1392 if (is_valid_node(nexthop, NULL,
1393 msg->cm_fields['D']) == 0) {
1395 /* prepend our node to the path */
1396 if (msg->cm_fields['P'] != NULL) {
1397 oldpath = msg->cm_fields['P'];
1398 msg->cm_fields['P'] = NULL;
1401 oldpath = strdup("unknown_user");
1403 size = strlen(oldpath) + SIZ;
1404 msg->cm_fields['P'] = malloc(size);
1405 snprintf(msg->cm_fields['P'], size, "%s!%s",
1406 config.c_nodename, oldpath);
1409 /* serialize the message */
1410 serialize_message(&sermsg, msg);
1413 if (strlen(nexthop) == 0) {
1414 strcpy(nexthop, msg->cm_fields['D']);
1421 lprintf(CTDL_DEBUG, "Appending to %s\n", filename);
1422 fp = fopen(filename, "ab");
1429 lprintf(CTDL_ERR, "%s: %s\n", filename, strerror(errno));
1432 CtdlFreeMessage(msg);
1436 else { /* invalid destination node name */
1439 "A message you sent could not be delivered due to an invalid destination node"
1440 " name. Please check the address and try sending the message again.\n");
1449 * Check to see if we already have a copy of this message, and
1450 * abort its processing if so. (We used to post a warning to Aide>
1451 * every time this happened, but the network is now so densely
1452 * connected that it's inevitable.)
1454 if (network_usetable(msg) != 0) {
1458 /* Learn network topology from the path */
1459 if ((msg->cm_fields['N'] != NULL) && (msg->cm_fields['P'] != NULL)) {
1460 network_learn_topology(msg->cm_fields['N'],
1461 msg->cm_fields['P']);
1464 /* Is the sending node giving us a very persuasive suggestion about
1465 * which room this message should be saved in? If so, go with that.
1467 if (msg->cm_fields['C'] != NULL) {
1468 safestrncpy(target_room,
1469 msg->cm_fields['C'],
1470 sizeof target_room);
1473 /* Otherwise, does it have a recipient? If so, validate it... */
1474 else if (msg->cm_fields['R'] != NULL) {
1475 recp = validate_recipients(msg->cm_fields['R']);
1476 if (recp != NULL) if (recp->num_error != 0) {
1478 "A message you sent could not be delivered due to an invalid address.\n"
1479 "Please check the address and try sending the message again.\n");
1484 strcpy(target_room, ""); /* no target room if mail */
1487 /* Our last shot at finding a home for this message is to see if
1488 * it has the O field (Originating room) set.
1490 else if (msg->cm_fields['O'] != NULL) {
1491 safestrncpy(target_room,
1492 msg->cm_fields['O'],
1493 sizeof target_room);
1496 /* Strip out fields that are only relevant during transit */
1497 if (msg->cm_fields['D'] != NULL) {
1498 free(msg->cm_fields['D']);
1499 msg->cm_fields['D'] = NULL;
1501 if (msg->cm_fields['C'] != NULL) {
1502 free(msg->cm_fields['C']);
1503 msg->cm_fields['C'] = NULL;
1506 /* save the message into a room */
1507 if (PerformNetprocHooks(msg, target_room) == 0) {
1508 msg->cm_flags = CM_SKIP_HOOKS;
1509 CtdlSubmitMsg(msg, recp, target_room);
1511 CtdlFreeMessage(msg);
1517 * Process a single message from a single file from the inbound queue
1519 void network_process_message(FILE *fp, long msgstart, long msgend) {
1524 hold_pos = ftell(fp);
1525 size = msgend - msgstart + 1;
1526 buffer = malloc(size);
1527 if (buffer != NULL) {
1528 fseek(fp, msgstart, SEEK_SET);
1529 fread(buffer, size, 1, fp);
1530 network_process_buffer(buffer, size);
1534 fseek(fp, hold_pos, SEEK_SET);
1539 * Process a single file from the inbound queue
1541 void network_process_file(char *filename) {
1543 long msgstart = (-1L);
1544 long msgend = (-1L);
1549 fp = fopen(filename, "rb");
1551 lprintf(CTDL_CRIT, "Error opening %s: %s\n",
1552 filename, strerror(errno));
1556 lprintf(CTDL_INFO, "network: processing <%s>\n", filename);
1558 /* Look for messages in the data stream and break them out */
1559 while (ch = getc(fp), ch >= 0) {
1562 if (msgstart >= 0L) {
1563 msgend = msgcur - 1;
1564 network_process_message(fp, msgstart, msgend);
1572 msgend = msgcur - 1;
1573 if (msgstart >= 0L) {
1574 network_process_message(fp, msgstart, msgend);
1583 * Process anything in the inbound queue
1585 void network_do_spoolin(void) {
1588 struct stat statbuf;
1590 static time_t last_spoolin_mtime = 0L;
1593 * Check the spoolin directory's modification time. If it hasn't
1594 * been touched, we don't need to scan it.
1596 if (stat(ctdl_netin_dir, &statbuf)) return;
1597 if (statbuf.st_mtime == last_spoolin_mtime) {
1598 lprintf(CTDL_DEBUG, "network: nothing in inbound queue\n");
1601 last_spoolin_mtime = statbuf.st_mtime;
1602 lprintf(CTDL_DEBUG, "network: processing inbound queue\n");
1605 * Ok, there's something interesting in there, so scan it.
1607 dp = opendir(ctdl_netin_dir);
1608 if (dp == NULL) return;
1610 while (d = readdir(dp), d != NULL) {
1611 if ((strcmp(d->d_name, ".")) && (strcmp(d->d_name, ".."))) {
1617 network_process_file(filename);
1625 * Delete any files in the outbound queue that were intended
1626 * to be sent to nodes which no longer exist.
1628 void network_purge_spoolout(void) {
1635 dp = opendir(ctdl_netout_dir);
1636 if (dp == NULL) return;
1638 while (d = readdir(dp), d != NULL) {
1639 if (!strcmp(d->d_name, ".") || !strcmp(d->d_name, ".."))
1647 strcpy(nexthop, "");
1648 i = is_valid_node(nexthop, NULL, d->d_name);
1650 if ( (i != 0) || (strlen(nexthop) > 0) ) {
1661 * receive network spool from the remote system
1663 void receive_spool(int sock, char *remote_nodename) {
1665 long bytes_received;
1667 static char pbuf[IGNET_PACKET_SIZE];
1668 char tempfilename[PATH_MAX];
1672 CtdlMakeTempFileName(tempfilename, sizeof tempfilename);
1673 if (sock_puts(sock, "NDOP") < 0) return;
1674 if (sock_gets(sock, buf) < 0) return;
1675 lprintf(CTDL_DEBUG, "<%s\n", buf);
1676 if (buf[0] != '2') {
1679 download_len = extract_long(&buf[4], 0);
1681 bytes_received = 0L;
1682 fp = fopen(tempfilename, "w");
1684 lprintf(CTDL_CRIT, "cannot open download file locally: %s\n",
1689 while (bytes_received < download_len) {
1690 snprintf(buf, sizeof buf, "READ %ld|%ld",
1692 ((download_len - bytes_received > IGNET_PACKET_SIZE)
1693 ? IGNET_PACKET_SIZE : (download_len - bytes_received)));
1694 if (sock_puts(sock, buf) < 0) {
1696 unlink(tempfilename);
1699 if (sock_gets(sock, buf) < 0) {
1701 unlink(tempfilename);
1704 if (buf[0] == '6') {
1705 plen = extract_long(&buf[4], 0);
1706 if (sock_read(sock, pbuf, plen) < 0) {
1708 unlink(tempfilename);
1711 fwrite((char *) pbuf, plen, 1, fp);
1712 bytes_received = bytes_received + plen;
1717 if (sock_puts(sock, "CLOS") < 0) {
1718 unlink(tempfilename);
1721 if (sock_gets(sock, buf) < 0) {
1722 unlink(tempfilename);
1725 if (download_len > 0)
1726 lprintf(CTDL_NOTICE, "Received %ld octets from <%s>",
1727 download_len, remote_nodename);
1728 lprintf(CTDL_DEBUG, "%s", buf);
1729 /* TODO: make move inline. forking is verry expensive. */
1743 * transmit network spool to the remote system
1745 void transmit_spool(int sock, char *remote_nodename)
1750 long bytes_to_write, thisblock, bytes_written;
1754 if (sock_puts(sock, "NUOP") < 0) return;
1755 if (sock_gets(sock, buf) < 0) return;
1756 lprintf(CTDL_DEBUG, "<%s\n", buf);
1757 if (buf[0] != '2') {
1761 snprintf(sfname, sizeof sfname,
1765 fd = open(sfname, O_RDONLY);
1767 if (errno != ENOENT) {
1768 lprintf(CTDL_CRIT, "cannot open upload file locally: %s\n",
1774 while (plen = (long) read(fd, pbuf, IGNET_PACKET_SIZE), plen > 0L) {
1775 bytes_to_write = plen;
1776 while (bytes_to_write > 0L) {
1777 snprintf(buf, sizeof buf, "WRIT %ld", bytes_to_write);
1778 if (sock_puts(sock, buf) < 0) {
1782 if (sock_gets(sock, buf) < 0) {
1786 thisblock = atol(&buf[4]);
1787 if (buf[0] == '7') {
1788 if (sock_write(sock, pbuf,
1789 (int) thisblock) < 0) {
1793 bytes_to_write -= thisblock;
1794 bytes_written += thisblock;
1803 if (sock_puts(sock, "UCLS 1") < 0) return;
1804 if (sock_gets(sock, buf) < 0) return;
1805 lprintf(CTDL_NOTICE, "Sent %ld octets to <%s>\n",
1806 bytes_written, remote_nodename);
1807 lprintf(CTDL_DEBUG, "<%s\n", buf);
1808 if (buf[0] == '2') {
1809 lprintf(CTDL_DEBUG, "Removing <%s>\n", sfname);
1817 * Poll one Citadel node (called by network_poll_other_citadel_nodes() below)
1819 void network_poll_node(char *node, char *secret, char *host, char *port) {
1823 if (network_talking_to(node, NTT_CHECK)) return;
1824 network_talking_to(node, NTT_ADD);
1825 lprintf(CTDL_NOTICE, "Connecting to <%s> at %s:%s\n", node, host, port);
1827 sock = sock_connect(host, port, "tcp");
1829 lprintf(CTDL_ERR, "Could not connect: %s\n", strerror(errno));
1830 network_talking_to(node, NTT_REMOVE);
1834 lprintf(CTDL_DEBUG, "Connected!\n");
1836 /* Read the server greeting */
1837 if (sock_gets(sock, buf) < 0) goto bail;
1838 lprintf(CTDL_DEBUG, ">%s\n", buf);
1840 /* Identify ourselves */
1841 snprintf(buf, sizeof buf, "NETP %s|%s", config.c_nodename, secret);
1842 lprintf(CTDL_DEBUG, "<%s\n", buf);
1843 if (sock_puts(sock, buf) <0) goto bail;
1844 if (sock_gets(sock, buf) < 0) goto bail;
1845 lprintf(CTDL_DEBUG, ">%s\n", buf);
1846 if (buf[0] != '2') goto bail;
1848 /* At this point we are authenticated. */
1849 receive_spool(sock, node);
1850 transmit_spool(sock, node);
1852 sock_puts(sock, "QUIT");
1853 bail: sock_close(sock);
1854 network_talking_to(node, NTT_REMOVE);
1860 * Poll other Citadel nodes and transfer inbound/outbound network data.
1861 * Set "full" to nonzero to force a poll of every node, or to zero to poll
1862 * only nodes to which we have data to send.
1864 void network_poll_other_citadel_nodes(int full_poll) {
1872 char spoolfile[256];
1874 if (working_ignetcfg == NULL) {
1875 lprintf(CTDL_DEBUG, "No nodes defined - not polling\n");
1879 /* Use the string tokenizer to grab one line at a time */
1880 for (i=0; i<num_tokens(working_ignetcfg, '\n'); ++i) {
1881 extract_token(linebuf, working_ignetcfg, i, '\n', sizeof linebuf);
1882 extract_token(node, linebuf, 0, '|', sizeof node);
1883 extract_token(secret, linebuf, 1, '|', sizeof secret);
1884 extract_token(host, linebuf, 2, '|', sizeof host);
1885 extract_token(port, linebuf, 3, '|', sizeof port);
1886 if ( (strlen(node) > 0) && (strlen(secret) > 0)
1887 && (strlen(host) > 0) && strlen(port) > 0) {
1895 if (access(spoolfile, R_OK) == 0) {
1900 network_poll_node(node, secret, host, port);
1911 * It's ok if these directories already exist. Just fail silently.
1913 void create_spool_dirs(void) {
1914 mkdir(ctdl_spool_dir, 0700);
1915 chown(ctdl_spool_dir, CTDLUID, (-1));
1916 mkdir(ctdl_netin_dir, 0700);
1917 chown(ctdl_netin_dir, CTDLUID, (-1));
1918 mkdir(ctdl_netout_dir, 0700);
1919 chown(ctdl_netout_dir, CTDLUID, (-1));
1927 * network_do_queue()
1929 * Run through the rooms doing various types of network stuff.
1931 void network_do_queue(void) {
1932 static time_t last_run = 0L;
1933 struct RoomProcList *ptr;
1934 int full_processing = 1;
1937 * Run the full set of processing tasks no more frequently
1938 * than once every n seconds
1940 if ( (time(NULL) - last_run) < config.c_net_freq ) {
1941 full_processing = 0;
1945 * This is a simple concurrency check to make sure only one queue run
1946 * is done at a time. We could do this with a mutex, but since we
1947 * don't really require extremely fine granularity here, we'll do it
1948 * with a static variable instead.
1950 if (doing_queue) return;
1953 /* Load the IGnet Configuration into memory */
1954 load_working_ignetcfg();
1957 * Poll other Citadel nodes. Maybe. If "full_processing" is set
1958 * then we poll everyone. Otherwise we only poll nodes we have stuff
1961 network_poll_other_citadel_nodes(full_processing);
1964 * Load the network map and filter list into memory.
1967 filterlist = load_filter_list();
1970 * Go ahead and run the queue
1972 if (full_processing) {
1973 lprintf(CTDL_DEBUG, "network: loading outbound queue\n");
1974 ForEachRoom(network_queue_room, NULL);
1977 if (rplist != NULL) {
1978 lprintf(CTDL_DEBUG, "network: running outbound queue\n");
1979 while (rplist != NULL) {
1980 char spoolroomname[ROOMNAMELEN];
1981 safestrncpy(spoolroomname, rplist->name, sizeof spoolroomname);
1982 begin_critical_section(S_RPLIST);
1984 /* pop this record off the list */
1986 rplist = rplist->next;
1989 /* invalidate any duplicate entries to prevent double processing */
1990 for (ptr=rplist; ptr!=NULL; ptr=ptr->next) {
1991 if (!strcasecmp(ptr->name, spoolroomname)) {
1996 end_critical_section(S_RPLIST);
1997 if (spoolroomname[0] != 0) {
1998 network_spoolout_room(spoolroomname);
2003 /* If there is anything in the inbound queue, process it */
2004 network_do_spoolin();
2006 /* Save the network map back to disk */
2007 write_network_map();
2009 /* Free the filter list in memory */
2010 free_filter_list(filterlist);
2013 network_purge_spoolout();
2015 lprintf(CTDL_DEBUG, "network: queue run completed\n");
2017 if (full_processing) {
2018 last_run = time(NULL);
2026 * cmd_netp() - authenticate to the server as another Citadel node polling
2027 * for network traffic
2029 void cmd_netp(char *cmdbuf)
2039 extract_token(node, cmdbuf, 0, '|', sizeof node);
2040 extract_token(pass, cmdbuf, 1, '|', sizeof pass);
2043 lprintf(CTDL_WARNING, "Network node <%s> refused - spooling", node);
2044 cprintf("%d spooling - try again in a few minutes\n",
2045 ERROR + RESOURCE_BUSY);
2049 /* load the IGnet Configuration to check node validity */
2050 load_working_ignetcfg();
2051 v = is_valid_node(nexthop, secret, node);
2054 lprintf(CTDL_WARNING, "Unknown node <%s>\n", node);
2055 cprintf("%d authentication failed\n",
2056 ERROR + PASSWORD_REQUIRED);
2060 if (strcasecmp(pass, secret)) {
2061 lprintf(CTDL_WARNING, "Bad password for network node <%s>", node);
2062 cprintf("%d authentication failed\n", ERROR + PASSWORD_REQUIRED);
2066 if (network_talking_to(node, NTT_CHECK)) {
2067 lprintf(CTDL_WARNING, "Duplicate session for network node <%s>", node);
2068 cprintf("%d Already talking to %s right now\n", ERROR + RESOURCE_BUSY, node);
2072 safestrncpy(CC->net_node, node, sizeof CC->net_node);
2073 network_talking_to(node, NTT_ADD);
2074 lprintf(CTDL_NOTICE, "Network node <%s> logged in\n", CC->net_node);
2075 cprintf("%d authenticated as network node '%s'\n", CIT_OK,
2080 * Module entry point
2082 char *serv_network_init(void)
2084 create_spool_dirs();
2085 CtdlRegisterProtoHook(cmd_gnet, "GNET", "Get network config");
2086 CtdlRegisterProtoHook(cmd_snet, "SNET", "Set network config");
2087 CtdlRegisterProtoHook(cmd_netp, "NETP", "Identify as network poller");
2088 CtdlRegisterProtoHook(cmd_nsyn, "NSYN", "Synchronize room to node");
2089 CtdlRegisterSessionHook(network_do_queue, EVT_TIMER);