4 * This module handles shared rooms, inter-Citadel mail, and outbound
5 * mailing list processing.
7 * Copyright (C) 2000-2002 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"
73 /* Nonzero while we are doing outbound network processing */
74 static int doing_queue = 0;
77 * When we do network processing, it's accomplished in two passes; one to
78 * gather a list of rooms and one to actually do them. It's ok that rplist
79 * is global; this process *only* runs as part of the housekeeping loop and
80 * therefore only one will run at a time.
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, "netconfigs");
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 safestrncpy(tempfilename, tmpnam(NULL), sizeof tempfilename);
394 assoc_file_name(filename, sizeof filename, &CC->room, "netconfigs");
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 * Spools out one message from the list.
425 void network_spool_msg(long msgnum, void *userdata) {
426 struct SpoolControl *sc;
429 char *newpath = NULL;
431 size_t instr_len = SIZ;
432 struct CtdlMessage *msg = NULL;
433 struct CtdlMessage *imsg;
434 struct namelist *nptr;
435 struct maplist *mptr;
436 struct ser_ret sermsg;
442 int delete_after_send = 0; /* Set to 1 to delete after spooling */
443 long list_msgnum = 0L;
444 int ok_to_participate = 0;
445 char *end_of_headers = NULL;
447 sc = (struct SpoolControl *)userdata;
450 * Process mailing list recipients
453 if (sc->listrecps != NULL) {
455 /* First, copy it to the spoolout room */
456 err = CtdlSaveMsgPointerInRoom(SMTP_SPOOLOUT_ROOM, msgnum, 0);
457 if (err != 0) return;
460 * Figure out how big a buffer we need to allocate
462 for (nptr = sc->listrecps; nptr != NULL; nptr = nptr->next) {
463 instr_len = instr_len + strlen(nptr->name);
469 lprintf(CTDL_DEBUG, "Generating delivery instructions\n");
470 instr = malloc(instr_len);
473 "Cannot allocate %ld bytes for instr...\n",
477 snprintf(instr, instr_len,
478 "Content-type: %s\n\nmsgid|%ld\nsubmitted|%ld\n"
479 "bounceto|postmaster@%s\n" ,
480 SPOOLMIME, msgnum, (long)time(NULL), config.c_fqdn );
482 /* Generate delivery instructions for each recipient */
483 for (nptr = sc->listrecps; nptr != NULL; nptr = nptr->next) {
484 size_t tmp = strlen(instr);
485 snprintf(&instr[tmp], instr_len - tmp,
486 "remote|%s|0||\n", nptr->name);
490 * Generate a message from the instructions
492 imsg = malloc(sizeof(struct CtdlMessage));
493 memset(imsg, 0, sizeof(struct CtdlMessage));
494 imsg->cm_magic = CTDLMESSAGE_MAGIC;
495 imsg->cm_anon_type = MES_NORMAL;
496 imsg->cm_format_type = FMT_RFC822;
497 imsg->cm_fields['A'] = strdup("Citadel");
498 imsg->cm_fields['M'] = instr;
500 /* Save delivery instructions in spoolout room */
501 CtdlSubmitMsg(imsg, NULL, SMTP_SPOOLOUT_ROOM);
502 CtdlFreeMessage(imsg);
506 * Process digest recipients
508 if ((sc->digestrecps != NULL) && (sc->digestfp != NULL)) {
509 msg = CtdlFetchMessage(msgnum, 1);
511 fprintf(sc->digestfp, " -----------------------------------"
512 "------------------------------------"
514 fprintf(sc->digestfp, "From: ");
515 if (msg->cm_fields['A'] != NULL) {
516 fprintf(sc->digestfp, "%s ", msg->cm_fields['A']);
518 if (msg->cm_fields['F'] != NULL) {
519 fprintf(sc->digestfp, "<%s> ", msg->cm_fields['F']);
521 else if (msg->cm_fields['N'] != NULL) {
522 fprintf(sc->digestfp, "@%s ", msg->cm_fields['N']);
524 fprintf(sc->digestfp, "\n");
525 if (msg->cm_fields['U'] != NULL) {
526 fprintf(sc->digestfp, "Subject: %s\n", msg->cm_fields['U']);
529 CC->redirect_buffer = malloc(SIZ);
530 CC->redirect_len = 0;
531 CC->redirect_alloc = SIZ;
533 safestrncpy(CC->preferred_formats, "text/plain", sizeof CC->preferred_formats);
534 CtdlOutputPreLoadedMsg(msg, 0L, MT_MIME, HEADERS_NONE, 0, 0);
536 end_of_headers = bmstrstr(CC->redirect_buffer, "\n\r\n", strncmp);
537 if (end_of_headers == NULL) {
538 end_of_headers = bmstrstr(CC->redirect_buffer, "\n\n", strncmp);
540 if (end_of_headers == NULL) {
541 end_of_headers = CC->redirect_buffer;
543 striplt(end_of_headers);
544 fprintf(sc->digestfp, "\n%s\n", end_of_headers);
546 free(CC->redirect_buffer);
547 CC->redirect_buffer = NULL;
548 CC->redirect_len = 0;
549 CC->redirect_alloc = 0;
551 sc->num_msgs_spooled += 1;
557 * Process client-side list participations for this room
560 if (sc->participates != NULL) {
561 msg = CtdlFetchMessage(msgnum, 1);
564 /* Only send messages which originated on our own Citadel
565 * network, otherwise we'll end up sending the remote
566 * mailing list's messages back to it, which is rude...
568 ok_to_participate = 0;
569 if (msg->cm_fields['N'] != NULL) {
570 if (!strcasecmp(msg->cm_fields['N'], config.c_nodename)) {
571 ok_to_participate = 1;
573 if (is_valid_node(NULL, NULL, msg->cm_fields['N']) == 0) {
574 ok_to_participate = 1;
577 if (ok_to_participate) {
578 if (msg->cm_fields['F'] != NULL) {
579 free(msg->cm_fields['F']);
581 msg->cm_fields['F'] = malloc(SIZ);
582 /* Replace the Internet email address of the actual
583 * author with the email address of the room itself,
584 * so the remote listserv doesn't reject us.
585 * FIXME ... I want to be able to pick any address
587 snprintf(msg->cm_fields['F'], SIZ,
588 "room_%s@%s", CC->room.QRname,
590 for (i=0; i<strlen(msg->cm_fields['F']); ++i) {
591 if (isspace(msg->cm_fields['F'][i])) {
592 msg->cm_fields['F'][i] = '_';
596 /* Now save it and generate delivery instructions */
597 list_msgnum = CtdlSubmitMsg(msg, NULL, SMTP_SPOOLOUT_ROOM);
600 * Figure out how big a buffer we need to allocate
602 for (nptr = sc->participates; nptr != NULL; nptr = nptr->next) {
603 instr_len = instr_len + strlen(nptr->name);
609 instr = malloc(instr_len);
612 "Cannot allocate %ld bytes for instr...\n",
616 snprintf(instr, instr_len,
617 "Content-type: %s\n\nmsgid|%ld\nsubmitted|%ld\n"
618 "bounceto|postmaster@%s\n" ,
619 SPOOLMIME, list_msgnum, (long)time(NULL), config.c_fqdn );
621 /* Generate delivery instructions for each recipient */
622 for (nptr = sc->participates; nptr != NULL; nptr = nptr->next) {
623 size_t tmp = strlen(instr);
624 snprintf(&instr[tmp], instr_len - tmp,
625 "remote|%s|0||\n", nptr->name);
629 * Generate a message from the instructions
631 imsg = malloc(sizeof(struct CtdlMessage));
632 memset(imsg, 0, sizeof(struct CtdlMessage));
633 imsg->cm_magic = CTDLMESSAGE_MAGIC;
634 imsg->cm_anon_type = MES_NORMAL;
635 imsg->cm_format_type = FMT_RFC822;
636 imsg->cm_fields['A'] = strdup("Citadel");
637 imsg->cm_fields['M'] = instr;
639 /* Save delivery instructions in spoolout room */
640 CtdlSubmitMsg(imsg, NULL, SMTP_SPOOLOUT_ROOM);
641 CtdlFreeMessage(imsg);
643 CtdlFreeMessage(msg);
648 * Process IGnet push shares
650 if (sc->ignet_push_shares != NULL) {
652 msg = CtdlFetchMessage(msgnum, 1);
656 /* Prepend our node name to the Path field whenever
657 * sending a message to another IGnet node
659 if (msg->cm_fields['P'] == NULL) {
660 msg->cm_fields['P'] = strdup("username");
662 newpath_len = strlen(msg->cm_fields['P']) +
663 strlen(config.c_nodename) + 2;
664 newpath = malloc(newpath_len);
665 snprintf(newpath, newpath_len, "%s!%s",
666 config.c_nodename, msg->cm_fields['P']);
667 free(msg->cm_fields['P']);
668 msg->cm_fields['P'] = newpath;
671 * Determine if this message is set to be deleted
672 * after sending out on the network
674 if (msg->cm_fields['S'] != NULL) {
675 if (!strcasecmp(msg->cm_fields['S'],
677 delete_after_send = 1;
681 /* Now send it to every node */
682 for (mptr = sc->ignet_push_shares; mptr != NULL;
687 /* Check for valid node name */
688 if (is_valid_node(NULL, NULL, mptr->remote_nodename) != 0) {
689 lprintf(CTDL_ERR, "Invalid node <%s>\n",
690 mptr->remote_nodename);
694 /* Check for split horizon */
695 lprintf(CTDL_DEBUG, "Path is %s\n", msg->cm_fields['P']);
696 bang = num_tokens(msg->cm_fields['P'], '!');
697 if (bang > 1) for (i=0; i<(bang-1); ++i) {
698 extract_token(buf, msg->cm_fields['P'],
700 if (!strcasecmp(buf, mptr->remote_nodename)) {
705 /* Send the message */
709 * Force the message to appear in the correct room
710 * on the far end by setting the C field correctly
712 if (msg->cm_fields['C'] != NULL) {
713 free(msg->cm_fields['C']);
715 if (strlen(mptr->remote_roomname) > 0) {
716 msg->cm_fields['C'] = strdup(mptr->remote_roomname);
719 msg->cm_fields['C'] = strdup(CC->room.QRname);
722 /* serialize it for transmission */
723 serialize_message(&sermsg, msg);
725 /* write it to the spool file */
726 snprintf(filename, sizeof filename,
727 #ifndef HAVE_SPOOL_DIR
731 #endif /* HAVE_SPOOL_DIR */
732 "/network/spoolout/%s",
733 mptr->remote_nodename);
734 lprintf(CTDL_DEBUG, "Appending to %s\n", filename);
735 fp = fopen(filename, "ab");
742 lprintf(CTDL_ERR, "%s: %s\n", filename, strerror(errno));
745 /* free the serialized version */
749 CtdlFreeMessage(msg);
753 /* update lastsent */
754 sc->lastsent = msgnum;
756 /* Delete this message if delete-after-send is set */
757 if (delete_after_send) {
758 CtdlDeleteMessages(CC->room.QRname, msgnum, "");
765 * Deliver digest messages
767 void network_deliver_digest(struct SpoolControl *sc) {
770 struct CtdlMessage *msg;
774 size_t instr_len = SIZ;
775 struct CtdlMessage *imsg;
776 struct namelist *nptr;
778 if (sc->num_msgs_spooled < 1) {
779 fclose(sc->digestfp);
784 msg = malloc(sizeof(struct CtdlMessage));
785 memset(msg, 0, sizeof(struct CtdlMessage));
786 msg->cm_magic = CTDLMESSAGE_MAGIC;
787 msg->cm_format_type = FMT_RFC822;
788 msg->cm_anon_type = MES_NORMAL;
790 sprintf(buf, "%ld", time(NULL));
791 msg->cm_fields['T'] = strdup(buf);
792 msg->cm_fields['A'] = strdup(CC->room.QRname);
793 snprintf(buf, sizeof buf, "[%s]", CC->room.QRname);
794 msg->cm_fields['U'] = strdup(buf);
795 sprintf(buf, "room_%s@%s", CC->room.QRname, config.c_fqdn);
796 for (i=0; i<strlen(buf); ++i) {
797 if (isspace(buf[i])) buf[i]='_';
798 buf[i] = tolower(buf[i]);
800 msg->cm_fields['F'] = strdup(buf);
802 fseek(sc->digestfp, 0L, SEEK_END);
803 msglen = ftell(sc->digestfp);
805 msg->cm_fields['M'] = malloc(msglen + 1);
806 fseek(sc->digestfp, 0L, SEEK_SET);
807 fread(msg->cm_fields['M'], (size_t)msglen, 1, sc->digestfp);
808 msg->cm_fields['M'][msglen] = 0;
810 fclose(sc->digestfp);
813 msgnum = CtdlSubmitMsg(msg, NULL, SMTP_SPOOLOUT_ROOM);
814 CtdlFreeMessage(msg);
816 /* Now generate the delivery instructions */
819 * Figure out how big a buffer we need to allocate
821 for (nptr = sc->digestrecps; nptr != NULL; nptr = nptr->next) {
822 instr_len = instr_len + strlen(nptr->name);
828 lprintf(CTDL_DEBUG, "Generating delivery instructions\n");
829 instr = malloc(instr_len);
831 lprintf(CTDL_EMERG, "Cannot allocate %ld bytes for instr...\n",
835 snprintf(instr, instr_len,
836 "Content-type: %s\n\nmsgid|%ld\nsubmitted|%ld\n"
837 "bounceto|postmaster@%s\n" ,
838 SPOOLMIME, msgnum, (long)time(NULL), config.c_fqdn );
840 /* Generate delivery instructions for each recipient */
841 for (nptr = sc->digestrecps; nptr != NULL; nptr = nptr->next) {
842 size_t tmp = strlen(instr);
843 snprintf(&instr[tmp], instr_len - tmp,
844 "remote|%s|0||\n", nptr->name);
848 * Generate a message from the instructions
850 imsg = malloc(sizeof(struct CtdlMessage));
851 memset(imsg, 0, sizeof(struct CtdlMessage));
852 imsg->cm_magic = CTDLMESSAGE_MAGIC;
853 imsg->cm_anon_type = MES_NORMAL;
854 imsg->cm_format_type = FMT_RFC822;
855 imsg->cm_fields['A'] = strdup("Citadel");
856 imsg->cm_fields['M'] = instr;
858 /* Save delivery instructions in spoolout room */
859 CtdlSubmitMsg(imsg, NULL, SMTP_SPOOLOUT_ROOM);
860 CtdlFreeMessage(imsg);
865 * Batch up and send all outbound traffic from the current room
867 void network_spoolout_room(char *room_to_spool) {
872 char roomname[ROOMNAMELEN];
875 struct SpoolControl sc;
876 struct namelist *nptr = NULL;
877 struct maplist *mptr = NULL;
880 int skipthisline = 0;
883 if (getroom(&CC->room, room_to_spool) != 0) {
884 lprintf(CTDL_CRIT, "ERROR: cannot load <%s>\n", room_to_spool);
888 memset(&sc, 0, sizeof(struct SpoolControl));
889 assoc_file_name(filename, sizeof filename, &CC->room, "netconfigs");
891 begin_critical_section(S_NETCONFIGS);
893 fp = fopen(filename, "r");
895 end_critical_section(S_NETCONFIGS);
899 lprintf(CTDL_INFO, "Networking started for <%s>\n", CC->room.QRname);
901 while (fgets(buf, sizeof buf, fp) != NULL) {
902 buf[strlen(buf)-1] = 0;
904 extract_token(instr, buf, 0, '|', sizeof instr);
905 if (!strcasecmp(instr, "lastsent")) {
906 sc.lastsent = extract_long(buf, 1);
908 else if (!strcasecmp(instr, "listrecp")) {
909 nptr = (struct namelist *)
910 malloc(sizeof(struct namelist));
911 nptr->next = sc.listrecps;
912 extract_token(nptr->name, buf, 1, '|', sizeof nptr->name);
915 else if (!strcasecmp(instr, "participate")) {
916 nptr = (struct namelist *)
917 malloc(sizeof(struct namelist));
918 nptr->next = sc.participates;
919 extract_token(nptr->name, buf, 1, '|', sizeof nptr->name);
920 sc.participates = nptr;
922 else if (!strcasecmp(instr, "digestrecp")) {
923 nptr = (struct namelist *)
924 malloc(sizeof(struct namelist));
925 nptr->next = sc.digestrecps;
926 extract_token(nptr->name, buf, 1, '|', sizeof nptr->name);
927 sc.digestrecps = nptr;
929 else if (!strcasecmp(instr, "ignet_push_share")) {
930 /* by checking each node's validity, we automatically
931 * purge nodes which do not exist from room network
932 * configurations at this time.
934 extract_token(nodename, buf, 1, '|', sizeof nodename);
935 extract_token(roomname, buf, 2, '|', sizeof roomname);
936 strcpy(nexthop, "xxx");
937 if (is_valid_node(nexthop, NULL, nodename) == 0) {
938 if (strlen(nexthop) == 0) {
939 mptr = (struct maplist *)
940 malloc(sizeof(struct maplist));
941 mptr->next = sc.ignet_push_shares;
942 strcpy(mptr->remote_nodename, nodename);
943 strcpy(mptr->remote_roomname, roomname);
944 sc.ignet_push_shares = mptr;
949 /* Preserve 'other' lines ... *unless* they happen to
950 * be subscribe/unsubscribe pendings with expired
954 if (!strncasecmp(buf, "subpending|", 11)) {
955 if (time(NULL) - extract_long(buf, 4) > EXP) {
959 if (!strncasecmp(buf, "unsubpending|", 13)) {
960 if (time(NULL) - extract_long(buf, 3) > EXP) {
965 if (skipthisline == 0) {
966 linesize = strlen(buf);
967 sc.misc = realloc(sc.misc,
968 (miscsize + linesize + 2) );
969 sprintf(&sc.misc[miscsize], "%s\n", buf);
970 miscsize = miscsize + linesize + 1;
978 /* If there are digest recipients, we have to build a digest */
979 if (sc.digestrecps != NULL) {
980 sc.digestfp = tmpfile();
981 fprintf(sc.digestfp, "Content-type: text/plain\n\n");
984 /* Do something useful */
985 CtdlForEachMessage(MSGS_GT, sc.lastsent, NULL, NULL,
986 network_spool_msg, &sc);
988 /* If we wrote a digest, deliver it and then close it */
989 snprintf(buf, sizeof buf, "room_%s@%s",
990 CC->room.QRname, config.c_fqdn);
991 for (i=0; i<strlen(buf); ++i) {
992 buf[i] = tolower(buf[i]);
993 if (isspace(buf[i])) buf[i] = '_';
995 if (sc.digestfp != NULL) {
996 fprintf(sc.digestfp, " -----------------------------------"
997 "------------------------------------"
999 "You are subscribed to the '%s' "
1001 "To post to the list: %s\n",
1002 CC->room.QRname, buf
1004 network_deliver_digest(&sc); /* deliver and close */
1007 /* Now rewrite the config file */
1008 fp = fopen(filename, "w");
1010 lprintf(CTDL_CRIT, "ERROR: cannot open %s: %s\n",
1011 filename, strerror(errno));
1014 fprintf(fp, "lastsent|%ld\n", sc.lastsent);
1016 /* Write out the listrecps while freeing from memory at the
1017 * same time. Am I clever or what? :)
1019 while (sc.listrecps != NULL) {
1020 fprintf(fp, "listrecp|%s\n", sc.listrecps->name);
1021 nptr = sc.listrecps->next;
1023 sc.listrecps = nptr;
1025 /* Do the same for digestrecps */
1026 while (sc.digestrecps != NULL) {
1027 fprintf(fp, "digestrecp|%s\n", sc.digestrecps->name);
1028 nptr = sc.digestrecps->next;
1029 free(sc.digestrecps);
1030 sc.digestrecps = nptr;
1032 /* Do the same for participates */
1033 while (sc.participates != NULL) {
1034 fprintf(fp, "participate|%s\n", sc.participates->name);
1035 nptr = sc.participates->next;
1036 free(sc.participates);
1037 sc.participates = nptr;
1039 while (sc.ignet_push_shares != NULL) {
1040 /* by checking each node's validity, we automatically
1041 * purge nodes which do not exist from room network
1042 * configurations at this time.
1044 if (is_valid_node(NULL, NULL, sc.ignet_push_shares->remote_nodename) == 0) {
1046 fprintf(fp, "ignet_push_share|%s",
1047 sc.ignet_push_shares->remote_nodename);
1048 if (strlen(sc.ignet_push_shares->remote_roomname) > 0) {
1049 fprintf(fp, "|%s", sc.ignet_push_shares->remote_roomname);
1052 mptr = sc.ignet_push_shares->next;
1053 free(sc.ignet_push_shares);
1054 sc.ignet_push_shares = mptr;
1056 if (sc.misc != NULL) {
1057 fwrite(sc.misc, strlen(sc.misc), 1, fp);
1063 end_critical_section(S_NETCONFIGS);
1069 * Send the *entire* contents of the current room to one specific network node,
1070 * ignoring anything we know about which messages have already undergone
1071 * network processing. This can be used to bring a new node into sync.
1073 int network_sync_to(char *target_node) {
1074 struct SpoolControl sc;
1075 int num_spooled = 0;
1084 /* Grab the configuration line we're looking for */
1085 assoc_file_name(filename, sizeof filename, &CC->room, "netconfigs");
1086 begin_critical_section(S_NETCONFIGS);
1087 fp = fopen(filename, "r");
1089 end_critical_section(S_NETCONFIGS);
1092 while (fgets(buf, sizeof buf, fp) != NULL) {
1093 buf[strlen(buf)-1] = 0;
1094 extract_token(sc_type, buf, 0, '|', sizeof sc_type);
1095 extract_token(sc_node, buf, 1, '|', sizeof sc_node);
1096 extract_token(sc_room, buf, 2, '|', sizeof sc_room);
1097 if ( (!strcasecmp(sc_type, "ignet_push_share"))
1098 && (!strcasecmp(sc_node, target_node)) ) {
1101 /* Concise syntax because we don't need a full linked-list */
1102 memset(&sc, 0, sizeof(struct SpoolControl));
1103 sc.ignet_push_shares = (struct maplist *)
1104 malloc(sizeof(struct maplist));
1105 sc.ignet_push_shares->next = NULL;
1106 safestrncpy(sc.ignet_push_shares->remote_nodename,
1108 sizeof sc.ignet_push_shares->remote_nodename);
1109 safestrncpy(sc.ignet_push_shares->remote_roomname,
1111 sizeof sc.ignet_push_shares->remote_roomname);
1115 end_critical_section(S_NETCONFIGS);
1117 if (!found_node) return(-1);
1119 /* Send ALL messages */
1120 num_spooled = CtdlForEachMessage(MSGS_ALL, 0L, NULL, NULL,
1121 network_spool_msg, &sc);
1123 /* Concise cleanup because we know there's only one node in the sc */
1124 free(sc.ignet_push_shares);
1126 lprintf(CTDL_NOTICE, "Synchronized %d messages to <%s>\n",
1127 num_spooled, target_node);
1128 return(num_spooled);
1133 * Implements the NSYN command
1135 void cmd_nsyn(char *argbuf) {
1137 char target_node[256];
1139 if (CtdlAccessCheck(ac_aide)) return;
1141 extract_token(target_node, argbuf, 0, '|', sizeof target_node);
1142 num_spooled = network_sync_to(target_node);
1143 if (num_spooled >= 0) {
1144 cprintf("%d Spooled %d messages.\n", CIT_OK, num_spooled);
1147 cprintf("%d No such room/node share exists.\n",
1148 ERROR + ROOM_NOT_FOUND);
1155 * Batch up and send all outbound traffic from the current room
1157 void network_queue_room(struct ctdlroom *qrbuf, void *data) {
1158 struct RoomProcList *ptr;
1160 ptr = (struct RoomProcList *) malloc(sizeof (struct RoomProcList));
1161 if (ptr == NULL) return;
1163 safestrncpy(ptr->name, qrbuf->QRname, sizeof ptr->name);
1170 * Learn topology from path fields
1172 void network_learn_topology(char *node, char *path) {
1174 struct NetMap *nmptr;
1176 strcpy(nexthop, "");
1178 if (num_tokens(path, '!') < 3) return;
1179 for (nmptr = the_netmap; nmptr != NULL; nmptr = nmptr->next) {
1180 if (!strcasecmp(nmptr->nodename, node)) {
1181 extract_token(nmptr->nexthop, path, 0, '!', sizeof nmptr->nexthop);
1182 nmptr->lastcontact = time(NULL);
1188 /* If we got here then it's not in the map, so add it. */
1189 nmptr = (struct NetMap *) malloc(sizeof (struct NetMap));
1190 strcpy(nmptr->nodename, node);
1191 nmptr->lastcontact = time(NULL);
1192 extract_token(nmptr->nexthop, path, 0, '!', sizeof nmptr->nexthop);
1193 nmptr->next = the_netmap;
1202 * Bounce a message back to the sender
1204 void network_bounce(struct CtdlMessage *msg, char *reason) {
1205 char *oldpath = NULL;
1207 char bouncesource[SIZ];
1208 char recipient[SIZ];
1209 struct recptypes *valid = NULL;
1210 char force_room[ROOMNAMELEN];
1211 static int serialnum = 0;
1214 lprintf(CTDL_DEBUG, "entering network_bounce()\n");
1216 if (msg == NULL) return;
1218 snprintf(bouncesource, sizeof bouncesource, "%s@%s", BOUNCESOURCE, config.c_nodename);
1221 * Give it a fresh message ID
1223 if (msg->cm_fields['I'] != NULL) {
1224 free(msg->cm_fields['I']);
1226 snprintf(buf, sizeof buf, "%ld.%04lx.%04x@%s",
1227 (long)time(NULL), (long)getpid(), ++serialnum, config.c_fqdn);
1228 msg->cm_fields['I'] = strdup(buf);
1231 * FIXME ... right now we're just sending a bounce; we really want to
1232 * include the text of the bounced message.
1234 if (msg->cm_fields['M'] != NULL) {
1235 free(msg->cm_fields['M']);
1237 msg->cm_fields['M'] = strdup(reason);
1238 msg->cm_format_type = 0;
1241 * Turn the message around
1243 if (msg->cm_fields['R'] == NULL) {
1244 free(msg->cm_fields['R']);
1247 if (msg->cm_fields['D'] == NULL) {
1248 free(msg->cm_fields['D']);
1251 snprintf(recipient, sizeof recipient, "%s@%s",
1252 msg->cm_fields['A'], msg->cm_fields['N']);
1254 if (msg->cm_fields['A'] == NULL) {
1255 free(msg->cm_fields['A']);
1258 if (msg->cm_fields['N'] == NULL) {
1259 free(msg->cm_fields['N']);
1262 if (msg->cm_fields['U'] == NULL) {
1263 free(msg->cm_fields['U']);
1266 msg->cm_fields['A'] = strdup(BOUNCESOURCE);
1267 msg->cm_fields['N'] = strdup(config.c_nodename);
1268 msg->cm_fields['U'] = strdup("Delivery Status Notification (Failure)");
1270 /* prepend our node to the path */
1271 if (msg->cm_fields['P'] != NULL) {
1272 oldpath = msg->cm_fields['P'];
1273 msg->cm_fields['P'] = NULL;
1276 oldpath = strdup("unknown_user");
1278 size = strlen(oldpath) + SIZ;
1279 msg->cm_fields['P'] = malloc(size);
1280 snprintf(msg->cm_fields['P'], size, "%s!%s", config.c_nodename, oldpath);
1283 /* Now submit the message */
1284 valid = validate_recipients(recipient);
1285 if (valid != NULL) if (valid->num_error > 0) {
1289 if ( (valid == NULL) || (!strcasecmp(recipient, bouncesource)) ) {
1290 strcpy(force_room, config.c_aideroom);
1293 strcpy(force_room, "");
1295 if ( (valid == NULL) && (strlen(force_room) == 0) ) {
1296 strcpy(force_room, config.c_aideroom);
1298 CtdlSubmitMsg(msg, valid, force_room);
1301 if (valid != NULL) free(valid);
1302 CtdlFreeMessage(msg);
1303 lprintf(CTDL_DEBUG, "leaving network_bounce()\n");
1310 * Process a buffer containing a single message from a single file
1311 * from the inbound queue
1313 void network_process_buffer(char *buffer, long size) {
1314 struct CtdlMessage *msg;
1317 struct recptypes *recp = NULL;
1318 char target_room[ROOMNAMELEN];
1319 struct ser_ret sermsg;
1320 char *oldpath = NULL;
1324 unsigned char firstbyte;
1325 unsigned char lastbyte;
1327 /* Validate just a little bit. First byte should be FF and
1328 * last byte should be 00.
1330 memcpy(&firstbyte, &buffer[0], 1);
1331 memcpy(&lastbyte, &buffer[size-1], 1);
1332 if ( (firstbyte != 255) || (lastbyte != 0) ) {
1333 lprintf(CTDL_ERR, "Corrupt message! Ignoring.\n");
1337 /* Set default target room to trash */
1338 strcpy(target_room, TWITROOM);
1340 /* Load the message into memory */
1341 msg = (struct CtdlMessage *) malloc(sizeof(struct CtdlMessage));
1342 memset(msg, 0, sizeof(struct CtdlMessage));
1343 msg->cm_magic = CTDLMESSAGE_MAGIC;
1344 msg->cm_anon_type = buffer[1];
1345 msg->cm_format_type = buffer[2];
1347 for (pos = 3; pos < size; ++pos) {
1348 field = buffer[pos];
1349 msg->cm_fields[field] = strdup(&buffer[pos+1]);
1350 pos = pos + strlen(&buffer[(int)pos]);
1353 /* Check for message routing */
1354 if (msg->cm_fields['D'] != NULL) {
1355 if (strcasecmp(msg->cm_fields['D'], config.c_nodename)) {
1357 /* route the message */
1358 strcpy(nexthop, "");
1359 if (is_valid_node(nexthop, NULL,
1360 msg->cm_fields['D']) == 0) {
1362 /* prepend our node to the path */
1363 if (msg->cm_fields['P'] != NULL) {
1364 oldpath = msg->cm_fields['P'];
1365 msg->cm_fields['P'] = NULL;
1368 oldpath = strdup("unknown_user");
1370 size = strlen(oldpath) + SIZ;
1371 msg->cm_fields['P'] = malloc(size);
1372 snprintf(msg->cm_fields['P'], size, "%s!%s",
1373 config.c_nodename, oldpath);
1376 /* serialize the message */
1377 serialize_message(&sermsg, msg);
1380 if (strlen(nexthop) == 0) {
1381 strcpy(nexthop, msg->cm_fields['D']);
1383 snprintf(filename, sizeof filename,
1384 #ifndef HAVE_SPOOL_DIR
1388 #endif /* HAVE_SPOOL_DIR */
1389 "/network/spoolout/%s", nexthop);
1390 lprintf(CTDL_DEBUG, "Appending to %s\n", filename);
1391 fp = fopen(filename, "ab");
1398 lprintf(CTDL_ERR, "%s: %s\n", filename, strerror(errno));
1401 CtdlFreeMessage(msg);
1405 else { /* invalid destination node name */
1408 "A message you sent could not be delivered due to an invalid destination node"
1409 " name. Please check the address and try sending the message again.\n");
1418 * Check to see if we already have a copy of this message, and
1419 * abort its processing if so. (We used to post a warning to Aide>
1420 * every time this happened, but the network is now so densely
1421 * connected that it's inevitable.)
1423 if (network_usetable(msg) != 0) {
1427 /* Learn network topology from the path */
1428 if ((msg->cm_fields['N'] != NULL) && (msg->cm_fields['P'] != NULL)) {
1429 network_learn_topology(msg->cm_fields['N'],
1430 msg->cm_fields['P']);
1433 /* Is the sending node giving us a very persuasive suggestion about
1434 * which room this message should be saved in? If so, go with that.
1436 if (msg->cm_fields['C'] != NULL) {
1437 safestrncpy(target_room,
1438 msg->cm_fields['C'],
1439 sizeof target_room);
1442 /* Otherwise, does it have a recipient? If so, validate it... */
1443 else if (msg->cm_fields['R'] != NULL) {
1444 recp = validate_recipients(msg->cm_fields['R']);
1445 if (recp != NULL) if (recp->num_error > 0) {
1447 "A message you sent could not be delivered due to an invalid address.\n"
1448 "Please check the address and try sending the message again.\n");
1453 strcpy(target_room, ""); /* no target room if mail */
1456 /* Our last shot at finding a home for this message is to see if
1457 * it has the O field (Originating room) set.
1459 else if (msg->cm_fields['O'] != NULL) {
1460 safestrncpy(target_room,
1461 msg->cm_fields['O'],
1462 sizeof target_room);
1465 /* Strip out fields that are only relevant during transit */
1466 if (msg->cm_fields['D'] != NULL) {
1467 free(msg->cm_fields['D']);
1468 msg->cm_fields['D'] = NULL;
1470 if (msg->cm_fields['C'] != NULL) {
1471 free(msg->cm_fields['C']);
1472 msg->cm_fields['C'] = NULL;
1475 /* save the message into a room */
1476 if (PerformNetprocHooks(msg, target_room) == 0) {
1477 msg->cm_flags = CM_SKIP_HOOKS;
1478 CtdlSubmitMsg(msg, recp, target_room);
1480 CtdlFreeMessage(msg);
1486 * Process a single message from a single file from the inbound queue
1488 void network_process_message(FILE *fp, long msgstart, long msgend) {
1493 hold_pos = ftell(fp);
1494 size = msgend - msgstart + 1;
1495 buffer = malloc(size);
1496 if (buffer != NULL) {
1497 fseek(fp, msgstart, SEEK_SET);
1498 fread(buffer, size, 1, fp);
1499 network_process_buffer(buffer, size);
1503 fseek(fp, hold_pos, SEEK_SET);
1508 * Process a single file from the inbound queue
1510 void network_process_file(char *filename) {
1512 long msgstart = (-1L);
1513 long msgend = (-1L);
1518 fp = fopen(filename, "rb");
1520 lprintf(CTDL_CRIT, "Error opening %s: %s\n",
1521 filename, strerror(errno));
1525 lprintf(CTDL_INFO, "network: processing <%s>\n", filename);
1527 /* Look for messages in the data stream and break them out */
1528 while (ch = getc(fp), ch >= 0) {
1531 if (msgstart >= 0L) {
1532 msgend = msgcur - 1;
1533 network_process_message(fp, msgstart, msgend);
1541 msgend = msgcur - 1;
1542 if (msgstart >= 0L) {
1543 network_process_message(fp, msgstart, msgend);
1552 * Process anything in the inbound queue
1554 void network_do_spoolin(void) {
1560 #ifndef HAVE_SPOOL_DIR
1564 #endif /* HAVE_SPOOL_DIR */
1565 "/network/spoolin");
1566 if (dp == NULL) return;
1568 while (d = readdir(dp), d != NULL) {
1569 if ((strcmp(d->d_name, ".")) && (strcmp(d->d_name, ".."))) {
1570 snprintf(filename, sizeof filename,
1571 #ifndef HAVE_SPOOL_DIR
1575 #endif /* HAVE_SPOOL_DIR */
1576 "/network/spoolin/%s", d->d_name);
1577 network_process_file(filename);
1585 * Delete any files in the outbound queue that were intended
1586 * to be sent to nodes which no longer exist.
1588 void network_purge_spoolout(void) {
1596 #ifndef HAVE_SPOOL_DIR
1600 #endif /* HAVE_SPOOL_DIR */
1601 "/network/spoolout");
1602 if (dp == NULL) return;
1604 while (d = readdir(dp), d != NULL) {
1605 if (!strcmp(d->d_name, ".") || !strcmp(d->d_name, ".."))
1607 snprintf(filename, sizeof filename,
1608 #ifndef HAVE_SPOOL_DIR
1612 #endif /* HAVE_SPOOL_DIR */
1613 "/network/spoolout/%s", d->d_name);
1615 strcpy(nexthop, "");
1616 i = is_valid_node(nexthop, NULL, d->d_name);
1618 if ( (i != 0) || (strlen(nexthop) > 0) ) {
1629 * receive network spool from the remote system
1631 void receive_spool(int sock, char *remote_nodename) {
1633 long bytes_received;
1635 static char pbuf[IGNET_PACKET_SIZE];
1636 char tempfilename[PATH_MAX];
1640 strcpy(tempfilename, tmpnam(NULL));
1641 if (sock_puts(sock, "NDOP") < 0) return;
1642 if (sock_gets(sock, buf) < 0) return;
1643 lprintf(CTDL_DEBUG, "<%s\n", buf);
1644 if (buf[0] != '2') {
1647 download_len = extract_long(&buf[4], 0);
1649 bytes_received = 0L;
1650 fp = fopen(tempfilename, "w");
1652 lprintf(CTDL_CRIT, "cannot open download file locally: %s\n",
1657 while (bytes_received < download_len) {
1658 snprintf(buf, sizeof buf, "READ %ld|%ld",
1660 ((download_len - bytes_received > IGNET_PACKET_SIZE)
1661 ? IGNET_PACKET_SIZE : (download_len - bytes_received)));
1662 if (sock_puts(sock, buf) < 0) {
1664 unlink(tempfilename);
1667 if (sock_gets(sock, buf) < 0) {
1669 unlink(tempfilename);
1672 if (buf[0] == '6') {
1673 plen = extract_long(&buf[4], 0);
1674 if (sock_read(sock, pbuf, plen) < 0) {
1676 unlink(tempfilename);
1679 fwrite((char *) pbuf, plen, 1, fp);
1680 bytes_received = bytes_received + plen;
1685 if (sock_puts(sock, "CLOS") < 0) {
1686 unlink(tempfilename);
1689 if (sock_gets(sock, buf) < 0) {
1690 unlink(tempfilename);
1693 if (download_len > 0)
1694 lprintf(CTDL_NOTICE, "Received %ld octets from <%s>",
1695 download_len, remote_nodename);
1696 lprintf(CTDL_DEBUG, "%s", buf);
1697 /* TODO: make move inline. forking is verry expensive. */
1698 snprintf(buf, sizeof buf, "mv %s "
1699 #ifndef HAVE_SPOOL_DIR
1703 #endif /* HAVE_SPOOL_DIR */
1704 "/network/spoolin/%s.%ld",
1705 tempfilename, remote_nodename, (long) getpid());
1712 * transmit network spool to the remote system
1714 void transmit_spool(int sock, char *remote_nodename)
1719 long bytes_to_write, thisblock, bytes_written;
1723 if (sock_puts(sock, "NUOP") < 0) return;
1724 if (sock_gets(sock, buf) < 0) return;
1725 lprintf(CTDL_DEBUG, "<%s\n", buf);
1726 if (buf[0] != '2') {
1730 snprintf(sfname, sizeof sfname,
1731 #ifndef HAVE_SPOOL_DIR
1735 #endif /* HAVE_SPOOL_DIR */
1736 "/network/spoolout/%s", remote_nodename);
1737 fd = open(sfname, O_RDONLY);
1739 if (errno != ENOENT) {
1740 lprintf(CTDL_CRIT, "cannot open upload file locally: %s\n",
1746 while (plen = (long) read(fd, pbuf, IGNET_PACKET_SIZE), plen > 0L) {
1747 bytes_to_write = plen;
1748 while (bytes_to_write > 0L) {
1749 snprintf(buf, sizeof buf, "WRIT %ld", bytes_to_write);
1750 if (sock_puts(sock, buf) < 0) {
1754 if (sock_gets(sock, buf) < 0) {
1758 thisblock = atol(&buf[4]);
1759 if (buf[0] == '7') {
1760 if (sock_write(sock, pbuf,
1761 (int) thisblock) < 0) {
1765 bytes_to_write -= thisblock;
1766 bytes_written += thisblock;
1775 if (sock_puts(sock, "UCLS 1") < 0) return;
1776 if (sock_gets(sock, buf) < 0) return;
1777 lprintf(CTDL_NOTICE, "Sent %ld octets to <%s>\n",
1778 bytes_written, remote_nodename);
1779 lprintf(CTDL_DEBUG, "<%s\n", buf);
1780 if (buf[0] == '2') {
1781 lprintf(CTDL_DEBUG, "Removing <%s>\n", sfname);
1789 * Poll one Citadel node (called by network_poll_other_citadel_nodes() below)
1791 void network_poll_node(char *node, char *secret, char *host, char *port) {
1795 if (network_talking_to(node, NTT_CHECK)) return;
1796 network_talking_to(node, NTT_ADD);
1797 lprintf(CTDL_NOTICE, "Connecting to <%s> at %s:%s\n", node, host, port);
1799 sock = sock_connect(host, port, "tcp");
1801 lprintf(CTDL_ERR, "Could not connect: %s\n", strerror(errno));
1802 network_talking_to(node, NTT_REMOVE);
1806 lprintf(CTDL_DEBUG, "Connected!\n");
1808 /* Read the server greeting */
1809 if (sock_gets(sock, buf) < 0) goto bail;
1810 lprintf(CTDL_DEBUG, ">%s\n", buf);
1812 /* Identify ourselves */
1813 snprintf(buf, sizeof buf, "NETP %s|%s", config.c_nodename, secret);
1814 lprintf(CTDL_DEBUG, "<%s\n", buf);
1815 if (sock_puts(sock, buf) <0) goto bail;
1816 if (sock_gets(sock, buf) < 0) goto bail;
1817 lprintf(CTDL_DEBUG, ">%s\n", buf);
1818 if (buf[0] != '2') goto bail;
1820 /* At this point we are authenticated. */
1821 receive_spool(sock, node);
1822 transmit_spool(sock, node);
1824 sock_puts(sock, "QUIT");
1825 bail: sock_close(sock);
1826 network_talking_to(node, NTT_REMOVE);
1832 * Poll other Citadel nodes and transfer inbound/outbound network data.
1833 * Set "full" to nonzero to force a poll of every node, or to zero to poll
1834 * only nodes to which we have data to send.
1836 void network_poll_other_citadel_nodes(int full_poll) {
1844 char spoolfile[256];
1846 if (working_ignetcfg == NULL) {
1847 lprintf(CTDL_DEBUG, "No nodes defined - not polling\n");
1851 /* Use the string tokenizer to grab one line at a time */
1852 for (i=0; i<num_tokens(working_ignetcfg, '\n'); ++i) {
1853 extract_token(linebuf, working_ignetcfg, i, '\n', sizeof linebuf);
1854 extract_token(node, linebuf, 0, '|', sizeof node);
1855 extract_token(secret, linebuf, 1, '|', sizeof secret);
1856 extract_token(host, linebuf, 2, '|', sizeof host);
1857 extract_token(port, linebuf, 3, '|', sizeof port);
1858 if ( (strlen(node) > 0) && (strlen(secret) > 0)
1859 && (strlen(host) > 0) && strlen(port) > 0) {
1862 snprintf(spoolfile, sizeof spoolfile,
1863 #ifndef HAVE_SPOOL_DIR
1868 "/network/spoolout/%s", node);
1869 if (access(spoolfile, R_OK) == 0) {
1874 network_poll_node(node, secret, host, port);
1885 * It's ok if these directories already exist. Just fail silently.
1887 void create_spool_dirs(void) {
1888 #ifndef HAVE_SPOOL_DIR
1889 mkdir("./network", 0700);
1890 mkdir("./network/systems", 0700);
1891 mkdir("./network/spoolin", 0700);
1892 mkdir("./network/spoolout", 0700);
1894 mkdir(SPOOL_DIR "/network", 0700);
1895 mkdir(SPOOL_DIR "/network/systems", 0700);
1896 mkdir(SPOOL_DIR "/network/spoolin", 0700);
1897 mkdir(SPOOL_DIR "/network/spoolout", 0700);
1898 #endif /* HAVE_SPOOL_DIR */
1906 * network_do_queue()
1908 * Run through the rooms doing various types of network stuff.
1910 void network_do_queue(void) {
1911 static time_t last_run = 0L;
1912 struct RoomProcList *ptr;
1913 int full_processing = 1;
1916 * Run the full set of processing tasks no more frequently
1917 * than once every n seconds
1919 if ( (time(NULL) - last_run) < config.c_net_freq ) {
1920 full_processing = 0;
1923 create_spool_dirs();
1926 * This is a simple concurrency check to make sure only one queue run
1927 * is done at a time. We could do this with a mutex, but since we
1928 * don't really require extremely fine granularity here, we'll do it
1929 * with a static variable instead.
1931 if (doing_queue) return;
1934 /* Load the IGnet Configuration into memory */
1935 load_working_ignetcfg();
1938 * Poll other Citadel nodes. Maybe. If "full_processing" is set
1939 * then we poll everyone. Otherwise we only poll nodes we have stuff
1942 network_poll_other_citadel_nodes(full_processing);
1945 * Load the network map and filter list into memory.
1948 filterlist = load_filter_list();
1951 * Go ahead and run the queue
1953 if (full_processing) {
1954 lprintf(CTDL_DEBUG, "network: loading outbound queue\n");
1955 ForEachRoom(network_queue_room, NULL);
1957 lprintf(CTDL_DEBUG, "network: running outbound queue\n");
1958 while (rplist != NULL) {
1959 network_spoolout_room(rplist->name);
1961 rplist = rplist->next;
1966 lprintf(CTDL_DEBUG, "network: processing inbound queue\n");
1967 network_do_spoolin();
1969 /* Save the network map back to disk */
1970 write_network_map();
1972 /* Free the filter list in memory */
1973 free_filter_list(filterlist);
1976 network_purge_spoolout();
1978 lprintf(CTDL_DEBUG, "network: queue run completed\n");
1980 if (full_processing) {
1981 last_run = time(NULL);
1989 * cmd_netp() - authenticate to the server as another Citadel node polling
1990 * for network traffic
1992 void cmd_netp(char *cmdbuf)
2002 extract_token(node, cmdbuf, 0, '|', sizeof node);
2003 extract_token(pass, cmdbuf, 1, '|', sizeof pass);
2006 lprintf(CTDL_WARNING, "Network node <%s> refused - spooling", node);
2007 cprintf("%d spooling - try again in a few minutes\n",
2008 ERROR + RESOURCE_BUSY);
2012 /* load the IGnet Configuration to check node validity */
2013 load_working_ignetcfg();
2014 v = is_valid_node(nexthop, secret, node);
2017 lprintf(CTDL_WARNING, "Unknown node <%s>\n", node);
2018 cprintf("%d authentication failed\n",
2019 ERROR + PASSWORD_REQUIRED);
2023 if (strcasecmp(pass, secret)) {
2024 lprintf(CTDL_WARNING, "Bad password for network node <%s>", node);
2025 cprintf("%d authentication failed\n", ERROR + PASSWORD_REQUIRED);
2029 if (network_talking_to(node, NTT_CHECK)) {
2030 lprintf(CTDL_WARNING, "Duplicate session for network node <%s>", node);
2031 cprintf("%d Already talking to %s right now\n", ERROR + RESOURCE_BUSY, node);
2035 safestrncpy(CC->net_node, node, sizeof CC->net_node);
2036 network_talking_to(node, NTT_ADD);
2037 lprintf(CTDL_NOTICE, "Network node <%s> logged in\n", CC->net_node);
2038 cprintf("%d authenticated as network node '%s'\n", CIT_OK,
2043 * Module entry point
2045 char *serv_network_init(void)
2047 create_spool_dirs();
2048 CtdlRegisterProtoHook(cmd_gnet, "GNET", "Get network config");
2049 CtdlRegisterProtoHook(cmd_snet, "SNET", "Set network config");
2050 CtdlRegisterProtoHook(cmd_netp, "NETP", "Identify as network poller");
2051 CtdlRegisterProtoHook(cmd_nsyn, "NSYN", "Synchronize room to node");
2052 CtdlRegisterSessionHook(network_do_queue, EVT_TIMER);