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;
431 size_t recps_len = SIZ;
432 struct recptypes *valid;
433 struct namelist *nptr;
435 if (sc->num_msgs_spooled < 1) {
436 fclose(sc->digestfp);
441 msg = malloc(sizeof(struct CtdlMessage));
442 memset(msg, 0, sizeof(struct CtdlMessage));
443 msg->cm_magic = CTDLMESSAGE_MAGIC;
444 msg->cm_format_type = FMT_RFC822;
445 msg->cm_anon_type = MES_NORMAL;
447 sprintf(buf, "%ld", time(NULL));
448 msg->cm_fields['T'] = strdup(buf);
449 msg->cm_fields['A'] = strdup(CC->room.QRname);
450 snprintf(buf, sizeof buf, "[%s]", CC->room.QRname);
451 msg->cm_fields['U'] = strdup(buf);
452 sprintf(buf, "room_%s@%s", CC->room.QRname, config.c_fqdn);
453 for (i=0; i<strlen(buf); ++i) {
454 if (isspace(buf[i])) buf[i]='_';
455 buf[i] = tolower(buf[i]);
457 msg->cm_fields['F'] = strdup(buf);
458 msg->cm_fields['R'] = strdup(buf);
461 * Go fetch the contents of the digest
463 fseek(sc->digestfp, 0L, SEEK_END);
464 msglen = ftell(sc->digestfp);
466 msg->cm_fields['M'] = malloc(msglen + 1);
467 fseek(sc->digestfp, 0L, SEEK_SET);
468 fread(msg->cm_fields['M'], (size_t)msglen, 1, sc->digestfp);
469 msg->cm_fields['M'][msglen] = 0;
471 fclose(sc->digestfp);
474 /* Now generate the delivery instructions */
477 * Figure out how big a buffer we need to allocate
479 for (nptr = sc->digestrecps; nptr != NULL; nptr = nptr->next) {
480 recps_len = recps_len + strlen(nptr->name) + 2;
483 recps = malloc(recps_len);
486 lprintf(CTDL_EMERG, "Cannot allocate %ld bytes for recps...\n", (long)recps_len);
493 for (nptr = sc->digestrecps; nptr != NULL; nptr = nptr->next) {
494 if (nptr != sc->digestrecps) {
497 strcat(recps, nptr->name);
500 /* Now submit the message */
501 valid = validate_recipients(recps);
503 CtdlSubmitMsg(msg, valid, NULL);
504 CtdlFreeMessage(msg);
505 free_recipients(valid);
510 * Deliver list messages to everyone on the list ... efficiently
512 void network_deliver_list(struct CtdlMessage *msg, struct SpoolControl *sc) {
514 size_t recps_len = SIZ;
515 struct recptypes *valid;
516 struct namelist *nptr;
518 /* Don't do this if there were no recipients! */
519 if (sc->listrecps == NULL) return;
521 /* Now generate the delivery instructions */
524 * Figure out how big a buffer we need to allocate
526 for (nptr = sc->listrecps; nptr != NULL; nptr = nptr->next) {
527 recps_len = recps_len + strlen(nptr->name) + 2;
530 recps = malloc(recps_len);
533 lprintf(CTDL_EMERG, "Cannot allocate %ld bytes for recps...\n", (long)recps_len);
540 for (nptr = sc->listrecps; nptr != NULL; nptr = nptr->next) {
541 if (nptr != sc->listrecps) {
544 strcat(recps, nptr->name);
547 /* Now submit the message */
548 valid = validate_recipients(recps);
550 CtdlSubmitMsg(msg, valid, NULL);
551 free_recipients(valid);
552 /* Do not call CtdlFreeMessage(msg) here; the caller will free it. */
559 * Spools out one message from the list.
561 void network_spool_msg(long msgnum, void *userdata) {
562 struct SpoolControl *sc;
564 char *newpath = NULL;
565 size_t instr_len = SIZ;
566 struct CtdlMessage *msg = NULL;
567 struct namelist *nptr;
568 struct maplist *mptr;
569 struct ser_ret sermsg;
575 int delete_after_send = 0; /* Set to 1 to delete after spooling */
576 int ok_to_participate = 0;
577 struct recptypes *valid;
579 sc = (struct SpoolControl *)userdata;
582 * Process mailing list recipients
585 if (sc->listrecps != NULL) {
586 /* Fetch the message. We're going to need to modify it
587 * in order to insert the [list name] in it, etc.
589 msg = CtdlFetchMessage(msgnum, 1);
592 /* Prepend "[List name]" to the subject */
593 if (msg->cm_fields['U'] == NULL) {
594 msg->cm_fields['U'] = strdup("(no subject)");
596 snprintf(buf, sizeof buf, "[%s] %s", CC->room.QRname, msg->cm_fields['U']);
597 free(msg->cm_fields['U']);
598 msg->cm_fields['U'] = strdup(buf);
600 /* Set the recipient of the list message to the
601 * email address of the room itself.
602 * FIXME ... I want to be able to pick any address
604 if (msg->cm_fields['R'] != NULL) {
605 free(msg->cm_fields['R']);
607 msg->cm_fields['R'] = malloc(256);
608 snprintf(msg->cm_fields['R'], 256,
609 "room_%s@%s", CC->room.QRname,
611 for (i=0; i<strlen(msg->cm_fields['R']); ++i) {
612 if (isspace(msg->cm_fields['R'][i])) {
613 msg->cm_fields['R'][i] = '_';
617 /* Handle delivery */
618 network_deliver_list(msg, sc);
619 CtdlFreeMessage(msg);
624 * Process digest recipients
626 if ((sc->digestrecps != NULL) && (sc->digestfp != NULL)) {
627 msg = CtdlFetchMessage(msgnum, 1);
629 fprintf(sc->digestfp, " -----------------------------------"
630 "------------------------------------"
632 fprintf(sc->digestfp, "From: ");
633 if (msg->cm_fields['A'] != NULL) {
634 fprintf(sc->digestfp, "%s ", msg->cm_fields['A']);
636 if (msg->cm_fields['F'] != NULL) {
637 fprintf(sc->digestfp, "<%s> ", msg->cm_fields['F']);
639 else if (msg->cm_fields['N'] != NULL) {
640 fprintf(sc->digestfp, "@%s ", msg->cm_fields['N']);
642 fprintf(sc->digestfp, "\n");
643 if (msg->cm_fields['U'] != NULL) {
644 fprintf(sc->digestfp, "Subject: %s\n", msg->cm_fields['U']);
647 CC->redirect_buffer = malloc(SIZ);
648 CC->redirect_len = 0;
649 CC->redirect_alloc = SIZ;
651 safestrncpy(CC->preferred_formats, "text/plain", sizeof CC->preferred_formats);
652 CtdlOutputPreLoadedMsg(msg, MT_CITADEL, HEADERS_NONE, 0, 0);
654 striplt(CC->redirect_buffer);
655 fprintf(sc->digestfp, "\n%s\n", CC->redirect_buffer);
657 free(CC->redirect_buffer);
658 CC->redirect_buffer = NULL;
659 CC->redirect_len = 0;
660 CC->redirect_alloc = 0;
662 sc->num_msgs_spooled += 1;
668 * Process client-side list participations for this room
671 if (sc->participates != NULL) {
672 msg = CtdlFetchMessage(msgnum, 1);
675 /* Only send messages which originated on our own Citadel
676 * network, otherwise we'll end up sending the remote
677 * mailing list's messages back to it, which is rude...
679 ok_to_participate = 0;
680 if (msg->cm_fields['N'] != NULL) {
681 if (!strcasecmp(msg->cm_fields['N'], config.c_nodename)) {
682 ok_to_participate = 1;
684 if (is_valid_node(NULL, NULL, msg->cm_fields['N']) == 0) {
685 ok_to_participate = 1;
688 if (ok_to_participate) {
689 if (msg->cm_fields['F'] != NULL) {
690 free(msg->cm_fields['F']);
692 msg->cm_fields['F'] = malloc(SIZ);
693 /* Replace the Internet email address of the actual
694 * author with the email address of the room itself,
695 * so the remote listserv doesn't reject us.
696 * FIXME ... I want to be able to pick any address
698 snprintf(msg->cm_fields['F'], SIZ,
699 "room_%s@%s", CC->room.QRname,
701 for (i=0; i<strlen(msg->cm_fields['F']); ++i) {
702 if (isspace(msg->cm_fields['F'][i])) {
703 msg->cm_fields['F'][i] = '_';
708 * Figure out how big a buffer we need to allocate
710 for (nptr = sc->participates; nptr != NULL; nptr = nptr->next) {
712 if (msg->cm_fields['R'] == NULL) {
713 free(msg->cm_fields['R']);
715 msg->cm_fields['R'] = strdup(nptr->name);
717 valid = validate_recipients(nptr->name);
718 CtdlSubmitMsg(msg, valid, "");
719 free_recipients(valid);
723 CtdlFreeMessage(msg);
728 * Process IGnet push shares
730 msg = CtdlFetchMessage(msgnum, 1);
734 /* Prepend our node name to the Path field whenever
735 * sending a message to another IGnet node
737 if (msg->cm_fields['P'] == NULL) {
738 msg->cm_fields['P'] = strdup("username");
740 newpath_len = strlen(msg->cm_fields['P']) +
741 strlen(config.c_nodename) + 2;
742 newpath = malloc(newpath_len);
743 snprintf(newpath, newpath_len, "%s!%s",
744 config.c_nodename, msg->cm_fields['P']);
745 free(msg->cm_fields['P']);
746 msg->cm_fields['P'] = newpath;
749 * Determine if this message is set to be deleted
750 * after sending out on the network
752 if (msg->cm_fields['S'] != NULL) {
753 if (!strcasecmp(msg->cm_fields['S'], "CANCEL")) {
754 delete_after_send = 1;
758 /* Now send it to every node */
759 if (sc->ignet_push_shares != NULL)
760 for (mptr = sc->ignet_push_shares; mptr != NULL;
765 /* Check for valid node name */
766 if (is_valid_node(NULL, NULL, mptr->remote_nodename) != 0) {
767 lprintf(CTDL_ERR, "Invalid node <%s>\n",
768 mptr->remote_nodename);
772 /* Check for split horizon */
773 lprintf(CTDL_DEBUG, "Path is %s\n", msg->cm_fields['P']);
774 bang = num_tokens(msg->cm_fields['P'], '!');
775 if (bang > 1) for (i=0; i<(bang-1); ++i) {
776 extract_token(buf, msg->cm_fields['P'],
778 if (!strcasecmp(buf, mptr->remote_nodename)) {
783 /* Send the message */
787 * Force the message to appear in the correct room
788 * on the far end by setting the C field correctly
790 if (msg->cm_fields['C'] != NULL) {
791 free(msg->cm_fields['C']);
793 if (strlen(mptr->remote_roomname) > 0) {
794 msg->cm_fields['C'] = strdup(mptr->remote_roomname);
797 msg->cm_fields['C'] = strdup(CC->room.QRname);
800 /* serialize it for transmission */
801 serialize_message(&sermsg, msg);
802 if (sermsg.len > 0) {
804 /* write it to the spool file */
805 snprintf(filename, sizeof filename,"%s/%s",
807 mptr->remote_nodename);
808 lprintf(CTDL_DEBUG, "Appending to %s\n", filename);
809 fp = fopen(filename, "ab");
816 lprintf(CTDL_ERR, "%s: %s\n", filename, strerror(errno));
819 /* free the serialized version */
825 CtdlFreeMessage(msg);
828 /* update lastsent */
829 sc->lastsent = msgnum;
831 /* Delete this message if delete-after-send is set */
832 if (delete_after_send) {
833 CtdlDeleteMessages(CC->room.QRname, &msgnum, 1, "");
840 * Batch up and send all outbound traffic from the current room
842 void network_spoolout_room(char *room_to_spool) {
847 char roomname[ROOMNAMELEN];
850 struct SpoolControl sc;
851 struct namelist *nptr = NULL;
852 struct maplist *mptr = NULL;
855 int skipthisline = 0;
859 * If the room doesn't exist, don't try to perform its networking tasks.
860 * Normally this should never happen, but once in a while maybe a room gets
861 * queued for networking and then deleted before it can happen.
863 if (getroom(&CC->room, room_to_spool) != 0) {
864 lprintf(CTDL_CRIT, "ERROR: cannot load <%s>\n", room_to_spool);
868 memset(&sc, 0, sizeof(struct SpoolControl));
869 assoc_file_name(filename, sizeof filename, &CC->room, ctdl_netcfg_dir);
871 begin_critical_section(S_NETCONFIGS);
873 /* Only do net processing for rooms that have netconfigs */
874 fp = fopen(filename, "r");
876 end_critical_section(S_NETCONFIGS);
880 lprintf(CTDL_INFO, "Networking started for <%s>\n", CC->room.QRname);
882 while (fgets(buf, sizeof buf, fp) != NULL) {
883 buf[strlen(buf)-1] = 0;
885 extract_token(instr, buf, 0, '|', sizeof instr);
886 if (!strcasecmp(instr, "lastsent")) {
887 sc.lastsent = extract_long(buf, 1);
889 else if (!strcasecmp(instr, "listrecp")) {
890 nptr = (struct namelist *)
891 malloc(sizeof(struct namelist));
892 nptr->next = sc.listrecps;
893 extract_token(nptr->name, buf, 1, '|', sizeof nptr->name);
896 else if (!strcasecmp(instr, "participate")) {
897 nptr = (struct namelist *)
898 malloc(sizeof(struct namelist));
899 nptr->next = sc.participates;
900 extract_token(nptr->name, buf, 1, '|', sizeof nptr->name);
901 sc.participates = nptr;
903 else if (!strcasecmp(instr, "digestrecp")) {
904 nptr = (struct namelist *)
905 malloc(sizeof(struct namelist));
906 nptr->next = sc.digestrecps;
907 extract_token(nptr->name, buf, 1, '|', sizeof nptr->name);
908 sc.digestrecps = nptr;
910 else if (!strcasecmp(instr, "ignet_push_share")) {
911 /* by checking each node's validity, we automatically
912 * purge nodes which do not exist from room network
913 * configurations at this time.
915 extract_token(nodename, buf, 1, '|', sizeof nodename);
916 extract_token(roomname, buf, 2, '|', sizeof roomname);
917 strcpy(nexthop, "xxx");
918 if (is_valid_node(nexthop, NULL, nodename) == 0) {
919 if (strlen(nexthop) == 0) {
920 mptr = (struct maplist *)
921 malloc(sizeof(struct maplist));
922 mptr->next = sc.ignet_push_shares;
923 strcpy(mptr->remote_nodename, nodename);
924 strcpy(mptr->remote_roomname, roomname);
925 sc.ignet_push_shares = mptr;
930 /* Preserve 'other' lines ... *unless* they happen to
931 * be subscribe/unsubscribe pendings with expired
935 if (!strncasecmp(buf, "subpending|", 11)) {
936 if (time(NULL) - extract_long(buf, 4) > EXP) {
940 if (!strncasecmp(buf, "unsubpending|", 13)) {
941 if (time(NULL) - extract_long(buf, 3) > EXP) {
946 if (skipthisline == 0) {
947 linesize = strlen(buf);
948 sc.misc = realloc(sc.misc,
949 (miscsize + linesize + 2) );
950 sprintf(&sc.misc[miscsize], "%s\n", buf);
951 miscsize = miscsize + linesize + 1;
959 /* If there are digest recipients, we have to build a digest */
960 if (sc.digestrecps != NULL) {
961 sc.digestfp = tmpfile();
962 fprintf(sc.digestfp, "Content-type: text/plain\n\n");
965 /* Do something useful */
966 CtdlForEachMessage(MSGS_GT, sc.lastsent, NULL, NULL, NULL,
967 network_spool_msg, &sc);
969 /* If we wrote a digest, deliver it and then close it */
970 snprintf(buf, sizeof buf, "room_%s@%s",
971 CC->room.QRname, config.c_fqdn);
972 for (i=0; i<strlen(buf); ++i) {
973 buf[i] = tolower(buf[i]);
974 if (isspace(buf[i])) buf[i] = '_';
976 if (sc.digestfp != NULL) {
977 fprintf(sc.digestfp, " -----------------------------------"
978 "------------------------------------"
980 "You are subscribed to the '%s' "
982 "To post to the list: %s\n",
985 network_deliver_digest(&sc); /* deliver and close */
988 /* Now rewrite the config file */
989 fp = fopen(filename, "w");
991 lprintf(CTDL_CRIT, "ERROR: cannot open %s: %s\n",
992 filename, strerror(errno));
995 fprintf(fp, "lastsent|%ld\n", sc.lastsent);
997 /* Write out the listrecps while freeing from memory at the
998 * same time. Am I clever or what? :)
1000 while (sc.listrecps != NULL) {
1001 fprintf(fp, "listrecp|%s\n", sc.listrecps->name);
1002 nptr = sc.listrecps->next;
1004 sc.listrecps = nptr;
1006 /* Do the same for digestrecps */
1007 while (sc.digestrecps != NULL) {
1008 fprintf(fp, "digestrecp|%s\n", sc.digestrecps->name);
1009 nptr = sc.digestrecps->next;
1010 free(sc.digestrecps);
1011 sc.digestrecps = nptr;
1013 /* Do the same for participates */
1014 while (sc.participates != NULL) {
1015 fprintf(fp, "participate|%s\n", sc.participates->name);
1016 nptr = sc.participates->next;
1017 free(sc.participates);
1018 sc.participates = nptr;
1020 while (sc.ignet_push_shares != NULL) {
1021 /* by checking each node's validity, we automatically
1022 * purge nodes which do not exist from room network
1023 * configurations at this time.
1025 if (is_valid_node(NULL, NULL, sc.ignet_push_shares->remote_nodename) == 0) {
1027 fprintf(fp, "ignet_push_share|%s",
1028 sc.ignet_push_shares->remote_nodename);
1029 if (strlen(sc.ignet_push_shares->remote_roomname) > 0) {
1030 fprintf(fp, "|%s", sc.ignet_push_shares->remote_roomname);
1033 mptr = sc.ignet_push_shares->next;
1034 free(sc.ignet_push_shares);
1035 sc.ignet_push_shares = mptr;
1037 if (sc.misc != NULL) {
1038 fwrite(sc.misc, strlen(sc.misc), 1, fp);
1044 end_critical_section(S_NETCONFIGS);
1050 * Send the *entire* contents of the current room to one specific network node,
1051 * ignoring anything we know about which messages have already undergone
1052 * network processing. This can be used to bring a new node into sync.
1054 int network_sync_to(char *target_node) {
1055 struct SpoolControl sc;
1056 int num_spooled = 0;
1065 /* Grab the configuration line we're looking for */
1066 assoc_file_name(filename, sizeof filename, &CC->room, ctdl_netcfg_dir);
1067 begin_critical_section(S_NETCONFIGS);
1068 fp = fopen(filename, "r");
1070 end_critical_section(S_NETCONFIGS);
1073 while (fgets(buf, sizeof buf, fp) != NULL) {
1074 buf[strlen(buf)-1] = 0;
1075 extract_token(sc_type, buf, 0, '|', sizeof sc_type);
1076 extract_token(sc_node, buf, 1, '|', sizeof sc_node);
1077 extract_token(sc_room, buf, 2, '|', sizeof sc_room);
1078 if ( (!strcasecmp(sc_type, "ignet_push_share"))
1079 && (!strcasecmp(sc_node, target_node)) ) {
1082 /* Concise syntax because we don't need a full linked-list */
1083 memset(&sc, 0, sizeof(struct SpoolControl));
1084 sc.ignet_push_shares = (struct maplist *)
1085 malloc(sizeof(struct maplist));
1086 sc.ignet_push_shares->next = NULL;
1087 safestrncpy(sc.ignet_push_shares->remote_nodename,
1089 sizeof sc.ignet_push_shares->remote_nodename);
1090 safestrncpy(sc.ignet_push_shares->remote_roomname,
1092 sizeof sc.ignet_push_shares->remote_roomname);
1096 end_critical_section(S_NETCONFIGS);
1098 if (!found_node) return(-1);
1100 /* Send ALL messages */
1101 num_spooled = CtdlForEachMessage(MSGS_ALL, 0L, NULL, NULL, NULL,
1102 network_spool_msg, &sc);
1104 /* Concise cleanup because we know there's only one node in the sc */
1105 free(sc.ignet_push_shares);
1107 lprintf(CTDL_NOTICE, "Synchronized %d messages to <%s>\n",
1108 num_spooled, target_node);
1109 return(num_spooled);
1114 * Implements the NSYN command
1116 void cmd_nsyn(char *argbuf) {
1118 char target_node[256];
1120 if (CtdlAccessCheck(ac_aide)) return;
1122 extract_token(target_node, argbuf, 0, '|', sizeof target_node);
1123 num_spooled = network_sync_to(target_node);
1124 if (num_spooled >= 0) {
1125 cprintf("%d Spooled %d messages.\n", CIT_OK, num_spooled);
1128 cprintf("%d No such room/node share exists.\n",
1129 ERROR + ROOM_NOT_FOUND);
1136 * Batch up and send all outbound traffic from the current room
1138 void network_queue_room(struct ctdlroom *qrbuf, void *data) {
1139 struct RoomProcList *ptr;
1141 ptr = (struct RoomProcList *) malloc(sizeof (struct RoomProcList));
1142 if (ptr == NULL) return;
1144 safestrncpy(ptr->name, qrbuf->QRname, sizeof ptr->name);
1145 begin_critical_section(S_RPLIST);
1148 end_critical_section(S_RPLIST);
1151 void destroy_network_queue_room(void)
1153 struct RoomProcList *cur, *p;
1154 struct NetMap *nmcur, *nmp;
1157 begin_critical_section(S_RPLIST);
1165 end_critical_section(S_RPLIST);
1168 while (nmcur != NULL)
1175 if (working_ignetcfg != NULL)
1176 free (working_ignetcfg);
1177 working_ignetcfg = NULL;
1182 * Learn topology from path fields
1184 void network_learn_topology(char *node, char *path) {
1186 struct NetMap *nmptr;
1188 strcpy(nexthop, "");
1190 if (num_tokens(path, '!') < 3) return;
1191 for (nmptr = the_netmap; nmptr != NULL; nmptr = nmptr->next) {
1192 if (!strcasecmp(nmptr->nodename, node)) {
1193 extract_token(nmptr->nexthop, path, 0, '!', sizeof nmptr->nexthop);
1194 nmptr->lastcontact = time(NULL);
1200 /* If we got here then it's not in the map, so add it. */
1201 nmptr = (struct NetMap *) malloc(sizeof (struct NetMap));
1202 strcpy(nmptr->nodename, node);
1203 nmptr->lastcontact = time(NULL);
1204 extract_token(nmptr->nexthop, path, 0, '!', sizeof nmptr->nexthop);
1205 nmptr->next = the_netmap;
1214 * Bounce a message back to the sender
1216 void network_bounce(struct CtdlMessage *msg, char *reason) {
1217 char *oldpath = NULL;
1219 char bouncesource[SIZ];
1220 char recipient[SIZ];
1221 struct recptypes *valid = NULL;
1222 char force_room[ROOMNAMELEN];
1223 static int serialnum = 0;
1226 lprintf(CTDL_DEBUG, "entering network_bounce()\n");
1228 if (msg == NULL) return;
1230 snprintf(bouncesource, sizeof bouncesource, "%s@%s", BOUNCESOURCE, config.c_nodename);
1233 * Give it a fresh message ID
1235 if (msg->cm_fields['I'] != NULL) {
1236 free(msg->cm_fields['I']);
1238 snprintf(buf, sizeof buf, "%ld.%04lx.%04x@%s",
1239 (long)time(NULL), (long)getpid(), ++serialnum, config.c_fqdn);
1240 msg->cm_fields['I'] = strdup(buf);
1243 * FIXME ... right now we're just sending a bounce; we really want to
1244 * include the text of the bounced message.
1246 if (msg->cm_fields['M'] != NULL) {
1247 free(msg->cm_fields['M']);
1249 msg->cm_fields['M'] = strdup(reason);
1250 msg->cm_format_type = 0;
1253 * Turn the message around
1255 if (msg->cm_fields['R'] == NULL) {
1256 free(msg->cm_fields['R']);
1259 if (msg->cm_fields['D'] == NULL) {
1260 free(msg->cm_fields['D']);
1263 snprintf(recipient, sizeof recipient, "%s@%s",
1264 msg->cm_fields['A'], msg->cm_fields['N']);
1266 if (msg->cm_fields['A'] == NULL) {
1267 free(msg->cm_fields['A']);
1270 if (msg->cm_fields['N'] == NULL) {
1271 free(msg->cm_fields['N']);
1274 if (msg->cm_fields['U'] == NULL) {
1275 free(msg->cm_fields['U']);
1278 msg->cm_fields['A'] = strdup(BOUNCESOURCE);
1279 msg->cm_fields['N'] = strdup(config.c_nodename);
1280 msg->cm_fields['U'] = strdup("Delivery Status Notification (Failure)");
1282 /* prepend our node to the path */
1283 if (msg->cm_fields['P'] != NULL) {
1284 oldpath = msg->cm_fields['P'];
1285 msg->cm_fields['P'] = NULL;
1288 oldpath = strdup("unknown_user");
1290 size = strlen(oldpath) + SIZ;
1291 msg->cm_fields['P'] = malloc(size);
1292 snprintf(msg->cm_fields['P'], size, "%s!%s", config.c_nodename, oldpath);
1295 /* Now submit the message */
1296 valid = validate_recipients(recipient);
1297 if (valid != NULL) if (valid->num_error != 0) {
1298 free_recipients(valid);
1301 if ( (valid == NULL) || (!strcasecmp(recipient, bouncesource)) ) {
1302 strcpy(force_room, config.c_aideroom);
1305 strcpy(force_room, "");
1307 if ( (valid == NULL) && (strlen(force_room) == 0) ) {
1308 strcpy(force_room, config.c_aideroom);
1310 CtdlSubmitMsg(msg, valid, force_room);
1313 if (valid != NULL) free_recipients(valid);
1314 CtdlFreeMessage(msg);
1315 lprintf(CTDL_DEBUG, "leaving network_bounce()\n");
1322 * Process a buffer containing a single message from a single file
1323 * from the inbound queue
1325 void network_process_buffer(char *buffer, long size) {
1326 struct CtdlMessage *msg = NULL;
1329 struct recptypes *recp = NULL;
1330 char target_room[ROOMNAMELEN];
1331 struct ser_ret sermsg;
1332 char *oldpath = NULL;
1336 unsigned char firstbyte;
1337 unsigned char lastbyte;
1339 /* Validate just a little bit. First byte should be FF and
1340 * last byte should be 00.
1342 memcpy(&firstbyte, &buffer[0], 1);
1343 memcpy(&lastbyte, &buffer[size-1], 1);
1344 if ( (firstbyte != 255) || (lastbyte != 0) ) {
1345 lprintf(CTDL_ERR, "Corrupt message! Ignoring.\n");
1349 /* Set default target room to trash */
1350 strcpy(target_room, TWITROOM);
1352 /* Load the message into memory */
1353 msg = (struct CtdlMessage *) malloc(sizeof(struct CtdlMessage));
1354 memset(msg, 0, sizeof(struct CtdlMessage));
1355 msg->cm_magic = CTDLMESSAGE_MAGIC;
1356 msg->cm_anon_type = buffer[1];
1357 msg->cm_format_type = buffer[2];
1359 for (pos = 3; pos < size; ++pos) {
1360 field = buffer[pos];
1361 msg->cm_fields[field] = strdup(&buffer[pos+1]);
1362 pos = pos + strlen(&buffer[(int)pos]);
1365 /* Check for message routing */
1366 if (msg->cm_fields['D'] != NULL) {
1367 if (strcasecmp(msg->cm_fields['D'], config.c_nodename)) {
1369 /* route the message */
1370 strcpy(nexthop, "");
1371 if (is_valid_node(nexthop, NULL,
1372 msg->cm_fields['D']) == 0) {
1374 /* prepend our node to the path */
1375 if (msg->cm_fields['P'] != NULL) {
1376 oldpath = msg->cm_fields['P'];
1377 msg->cm_fields['P'] = NULL;
1380 oldpath = strdup("unknown_user");
1382 size = strlen(oldpath) + SIZ;
1383 msg->cm_fields['P'] = malloc(size);
1384 snprintf(msg->cm_fields['P'], size, "%s!%s",
1385 config.c_nodename, oldpath);
1388 /* serialize the message */
1389 serialize_message(&sermsg, msg);
1392 if (strlen(nexthop) == 0) {
1393 strcpy(nexthop, msg->cm_fields['D']);
1400 lprintf(CTDL_DEBUG, "Appending to %s\n", filename);
1401 fp = fopen(filename, "ab");
1408 lprintf(CTDL_ERR, "%s: %s\n", filename, strerror(errno));
1411 CtdlFreeMessage(msg);
1415 else { /* invalid destination node name */
1418 "A message you sent could not be delivered due to an invalid destination node"
1419 " name. Please check the address and try sending the message again.\n");
1428 * Check to see if we already have a copy of this message, and
1429 * abort its processing if so. (We used to post a warning to Aide>
1430 * every time this happened, but the network is now so densely
1431 * connected that it's inevitable.)
1433 if (network_usetable(msg) != 0) {
1437 /* Learn network topology from the path */
1438 if ((msg->cm_fields['N'] != NULL) && (msg->cm_fields['P'] != NULL)) {
1439 network_learn_topology(msg->cm_fields['N'],
1440 msg->cm_fields['P']);
1443 /* Is the sending node giving us a very persuasive suggestion about
1444 * which room this message should be saved in? If so, go with that.
1446 if (msg->cm_fields['C'] != NULL) {
1447 safestrncpy(target_room,
1448 msg->cm_fields['C'],
1449 sizeof target_room);
1452 /* Otherwise, does it have a recipient? If so, validate it... */
1453 else if (msg->cm_fields['R'] != NULL) {
1454 recp = validate_recipients(msg->cm_fields['R']);
1455 if (recp != NULL) if (recp->num_error != 0) {
1457 "A message you sent could not be delivered due to an invalid address.\n"
1458 "Please check the address and try sending the message again.\n");
1460 free_recipients(recp);
1463 strcpy(target_room, ""); /* no target room if mail */
1466 /* Our last shot at finding a home for this message is to see if
1467 * it has the O field (Originating room) set.
1469 else if (msg->cm_fields['O'] != NULL) {
1470 safestrncpy(target_room,
1471 msg->cm_fields['O'],
1472 sizeof target_room);
1475 /* Strip out fields that are only relevant during transit */
1476 if (msg->cm_fields['D'] != NULL) {
1477 free(msg->cm_fields['D']);
1478 msg->cm_fields['D'] = NULL;
1480 if (msg->cm_fields['C'] != NULL) {
1481 free(msg->cm_fields['C']);
1482 msg->cm_fields['C'] = NULL;
1485 /* save the message into a room */
1486 if (PerformNetprocHooks(msg, target_room) == 0) {
1487 msg->cm_flags = CM_SKIP_HOOKS;
1488 CtdlSubmitMsg(msg, recp, target_room);
1490 CtdlFreeMessage(msg);
1491 free_recipients(recp);
1496 * Process a single message from a single file from the inbound queue
1498 void network_process_message(FILE *fp, long msgstart, long msgend) {
1503 hold_pos = ftell(fp);
1504 size = msgend - msgstart + 1;
1505 buffer = malloc(size);
1506 if (buffer != NULL) {
1507 fseek(fp, msgstart, SEEK_SET);
1508 fread(buffer, size, 1, fp);
1509 network_process_buffer(buffer, size);
1513 fseek(fp, hold_pos, SEEK_SET);
1518 * Process a single file from the inbound queue
1520 void network_process_file(char *filename) {
1522 long msgstart = (-1L);
1523 long msgend = (-1L);
1528 fp = fopen(filename, "rb");
1530 lprintf(CTDL_CRIT, "Error opening %s: %s\n",
1531 filename, strerror(errno));
1535 lprintf(CTDL_INFO, "network: processing <%s>\n", filename);
1537 /* Look for messages in the data stream and break them out */
1538 while (ch = getc(fp), ch >= 0) {
1541 if (msgstart >= 0L) {
1542 msgend = msgcur - 1;
1543 network_process_message(fp, msgstart, msgend);
1551 msgend = msgcur - 1;
1552 if (msgstart >= 0L) {
1553 network_process_message(fp, msgstart, msgend);
1562 * Process anything in the inbound queue
1564 void network_do_spoolin(void) {
1567 struct stat statbuf;
1569 static time_t last_spoolin_mtime = 0L;
1572 * Check the spoolin directory's modification time. If it hasn't
1573 * been touched, we don't need to scan it.
1575 if (stat(ctdl_netin_dir, &statbuf)) return;
1576 if (statbuf.st_mtime == last_spoolin_mtime) {
1577 lprintf(CTDL_DEBUG, "network: nothing in inbound queue\n");
1580 last_spoolin_mtime = statbuf.st_mtime;
1581 lprintf(CTDL_DEBUG, "network: processing inbound queue\n");
1584 * Ok, there's something interesting in there, so scan it.
1586 dp = opendir(ctdl_netin_dir);
1587 if (dp == NULL) return;
1589 while (d = readdir(dp), d != NULL) {
1590 if ((strcmp(d->d_name, ".")) && (strcmp(d->d_name, ".."))) {
1596 network_process_file(filename);
1604 * Delete any files in the outbound queue that were intended
1605 * to be sent to nodes which no longer exist.
1607 void network_purge_spoolout(void) {
1614 dp = opendir(ctdl_netout_dir);
1615 if (dp == NULL) return;
1617 while (d = readdir(dp), d != NULL) {
1618 if (!strcmp(d->d_name, ".") || !strcmp(d->d_name, ".."))
1626 strcpy(nexthop, "");
1627 i = is_valid_node(nexthop, NULL, d->d_name);
1629 if ( (i != 0) || (strlen(nexthop) > 0) ) {
1640 * receive network spool from the remote system
1642 void receive_spool(int sock, char *remote_nodename) {
1644 long bytes_received;
1646 static char pbuf[IGNET_PACKET_SIZE];
1647 char tempfilename[PATH_MAX];
1651 CtdlMakeTempFileName(tempfilename, sizeof tempfilename);
1652 if (sock_puts(sock, "NDOP") < 0) return;
1653 if (sock_gets(sock, buf) < 0) return;
1654 lprintf(CTDL_DEBUG, "<%s\n", buf);
1655 if (buf[0] != '2') {
1658 download_len = extract_long(&buf[4], 0);
1660 bytes_received = 0L;
1661 fp = fopen(tempfilename, "w");
1663 lprintf(CTDL_CRIT, "cannot open download file locally: %s\n",
1668 while (bytes_received < download_len) {
1669 snprintf(buf, sizeof buf, "READ %ld|%ld",
1671 ((download_len - bytes_received > IGNET_PACKET_SIZE)
1672 ? IGNET_PACKET_SIZE : (download_len - bytes_received)));
1673 if (sock_puts(sock, buf) < 0) {
1675 unlink(tempfilename);
1678 if (sock_gets(sock, buf) < 0) {
1680 unlink(tempfilename);
1683 if (buf[0] == '6') {
1684 plen = extract_long(&buf[4], 0);
1685 if (sock_read(sock, pbuf, plen) < 0) {
1687 unlink(tempfilename);
1690 fwrite((char *) pbuf, plen, 1, fp);
1691 bytes_received = bytes_received + plen;
1696 if (sock_puts(sock, "CLOS") < 0) {
1697 unlink(tempfilename);
1700 if (sock_gets(sock, buf) < 0) {
1701 unlink(tempfilename);
1704 if (download_len > 0)
1705 lprintf(CTDL_NOTICE, "Received %ld octets from <%s>",
1706 download_len, remote_nodename);
1707 lprintf(CTDL_DEBUG, "%s", buf);
1708 /* TODO: make move inline. forking is verry expensive. */
1722 * transmit network spool to the remote system
1724 void transmit_spool(int sock, char *remote_nodename)
1729 long bytes_to_write, thisblock, bytes_written;
1733 if (sock_puts(sock, "NUOP") < 0) return;
1734 if (sock_gets(sock, buf) < 0) return;
1735 lprintf(CTDL_DEBUG, "<%s\n", buf);
1736 if (buf[0] != '2') {
1740 snprintf(sfname, sizeof sfname,
1744 fd = open(sfname, O_RDONLY);
1746 if (errno != ENOENT) {
1747 lprintf(CTDL_CRIT, "cannot open upload file locally: %s\n",
1753 while (plen = (long) read(fd, pbuf, IGNET_PACKET_SIZE), plen > 0L) {
1754 bytes_to_write = plen;
1755 while (bytes_to_write > 0L) {
1756 snprintf(buf, sizeof buf, "WRIT %ld", bytes_to_write);
1757 if (sock_puts(sock, buf) < 0) {
1761 if (sock_gets(sock, buf) < 0) {
1765 thisblock = atol(&buf[4]);
1766 if (buf[0] == '7') {
1767 if (sock_write(sock, pbuf,
1768 (int) thisblock) < 0) {
1772 bytes_to_write -= thisblock;
1773 bytes_written += thisblock;
1782 if (sock_puts(sock, "UCLS 1") < 0) return;
1783 if (sock_gets(sock, buf) < 0) return;
1784 lprintf(CTDL_NOTICE, "Sent %ld octets to <%s>\n",
1785 bytes_written, remote_nodename);
1786 lprintf(CTDL_DEBUG, "<%s\n", buf);
1787 if (buf[0] == '2') {
1788 lprintf(CTDL_DEBUG, "Removing <%s>\n", sfname);
1796 * Poll one Citadel node (called by network_poll_other_citadel_nodes() below)
1798 void network_poll_node(char *node, char *secret, char *host, char *port) {
1802 if (network_talking_to(node, NTT_CHECK)) return;
1803 network_talking_to(node, NTT_ADD);
1804 lprintf(CTDL_NOTICE, "Connecting to <%s> at %s:%s\n", node, host, port);
1806 sock = sock_connect(host, port, "tcp");
1808 lprintf(CTDL_ERR, "Could not connect: %s\n", strerror(errno));
1809 network_talking_to(node, NTT_REMOVE);
1813 lprintf(CTDL_DEBUG, "Connected!\n");
1815 /* Read the server greeting */
1816 if (sock_gets(sock, buf) < 0) goto bail;
1817 lprintf(CTDL_DEBUG, ">%s\n", buf);
1819 /* Identify ourselves */
1820 snprintf(buf, sizeof buf, "NETP %s|%s", config.c_nodename, secret);
1821 lprintf(CTDL_DEBUG, "<%s\n", buf);
1822 if (sock_puts(sock, buf) <0) goto bail;
1823 if (sock_gets(sock, buf) < 0) goto bail;
1824 lprintf(CTDL_DEBUG, ">%s\n", buf);
1825 if (buf[0] != '2') goto bail;
1827 /* At this point we are authenticated. */
1828 receive_spool(sock, node);
1829 transmit_spool(sock, node);
1831 sock_puts(sock, "QUIT");
1832 bail: sock_close(sock);
1833 network_talking_to(node, NTT_REMOVE);
1839 * Poll other Citadel nodes and transfer inbound/outbound network data.
1840 * Set "full" to nonzero to force a poll of every node, or to zero to poll
1841 * only nodes to which we have data to send.
1843 void network_poll_other_citadel_nodes(int full_poll) {
1851 char spoolfile[256];
1853 if (working_ignetcfg == NULL) {
1854 lprintf(CTDL_DEBUG, "No nodes defined - not polling\n");
1858 /* Use the string tokenizer to grab one line at a time */
1859 for (i=0; i<num_tokens(working_ignetcfg, '\n'); ++i) {
1860 extract_token(linebuf, working_ignetcfg, i, '\n', sizeof linebuf);
1861 extract_token(node, linebuf, 0, '|', sizeof node);
1862 extract_token(secret, linebuf, 1, '|', sizeof secret);
1863 extract_token(host, linebuf, 2, '|', sizeof host);
1864 extract_token(port, linebuf, 3, '|', sizeof port);
1865 if ( (strlen(node) > 0) && (strlen(secret) > 0)
1866 && (strlen(host) > 0) && strlen(port) > 0) {
1874 if (access(spoolfile, R_OK) == 0) {
1879 network_poll_node(node, secret, host, port);
1890 * It's ok if these directories already exist. Just fail silently.
1892 void create_spool_dirs(void) {
1893 mkdir(ctdl_spool_dir, 0700);
1894 chown(ctdl_spool_dir, CTDLUID, (-1));
1895 mkdir(ctdl_netin_dir, 0700);
1896 chown(ctdl_netin_dir, CTDLUID, (-1));
1897 mkdir(ctdl_netout_dir, 0700);
1898 chown(ctdl_netout_dir, CTDLUID, (-1));
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;
1924 * This is a simple concurrency check to make sure only one queue run
1925 * is done at a time. We could do this with a mutex, but since we
1926 * don't really require extremely fine granularity here, we'll do it
1927 * with a static variable instead.
1929 if (doing_queue) return;
1932 /* Load the IGnet Configuration into memory */
1933 load_working_ignetcfg();
1936 * Poll other Citadel nodes. Maybe. If "full_processing" is set
1937 * then we poll everyone. Otherwise we only poll nodes we have stuff
1940 network_poll_other_citadel_nodes(full_processing);
1943 * Load the network map and filter list into memory.
1946 filterlist = load_filter_list();
1949 * Go ahead and run the queue
1951 if (full_processing) {
1952 lprintf(CTDL_DEBUG, "network: loading outbound queue\n");
1953 ForEachRoom(network_queue_room, NULL);
1956 if (rplist != NULL) {
1957 lprintf(CTDL_DEBUG, "network: running outbound queue\n");
1958 while (rplist != NULL) {
1959 char spoolroomname[ROOMNAMELEN];
1960 safestrncpy(spoolroomname, rplist->name, sizeof spoolroomname);
1961 begin_critical_section(S_RPLIST);
1963 /* pop this record off the list */
1965 rplist = rplist->next;
1968 /* invalidate any duplicate entries to prevent double processing */
1969 for (ptr=rplist; ptr!=NULL; ptr=ptr->next) {
1970 if (!strcasecmp(ptr->name, spoolroomname)) {
1975 end_critical_section(S_RPLIST);
1976 if (spoolroomname[0] != 0) {
1977 network_spoolout_room(spoolroomname);
1982 /* If there is anything in the inbound queue, process it */
1983 network_do_spoolin();
1985 /* Save the network map back to disk */
1986 write_network_map();
1988 /* Free the filter list in memory */
1989 free_filter_list(filterlist);
1992 network_purge_spoolout();
1994 lprintf(CTDL_DEBUG, "network: queue run completed\n");
1996 if (full_processing) {
1997 last_run = time(NULL);
2005 * cmd_netp() - authenticate to the server as another Citadel node polling
2006 * for network traffic
2008 void cmd_netp(char *cmdbuf)
2018 extract_token(node, cmdbuf, 0, '|', sizeof node);
2019 extract_token(pass, cmdbuf, 1, '|', sizeof pass);
2022 lprintf(CTDL_WARNING, "Network node <%s> refused - spooling", node);
2023 cprintf("%d spooling - try again in a few minutes\n",
2024 ERROR + RESOURCE_BUSY);
2028 /* load the IGnet Configuration to check node validity */
2029 load_working_ignetcfg();
2030 v = is_valid_node(nexthop, secret, node);
2033 lprintf(CTDL_WARNING, "Unknown node <%s>\n", node);
2034 cprintf("%d authentication failed\n",
2035 ERROR + PASSWORD_REQUIRED);
2039 if (strcasecmp(pass, secret)) {
2040 lprintf(CTDL_WARNING, "Bad password for network node <%s>", node);
2041 cprintf("%d authentication failed\n", ERROR + PASSWORD_REQUIRED);
2045 if (network_talking_to(node, NTT_CHECK)) {
2046 lprintf(CTDL_WARNING, "Duplicate session for network node <%s>", node);
2047 cprintf("%d Already talking to %s right now\n", ERROR + RESOURCE_BUSY, node);
2051 safestrncpy(CC->net_node, node, sizeof CC->net_node);
2052 network_talking_to(node, NTT_ADD);
2053 lprintf(CTDL_NOTICE, "Network node <%s> logged in\n", CC->net_node);
2054 cprintf("%d authenticated as network node '%s'\n", CIT_OK,
2059 * Module entry point
2061 char *serv_network_init(void)
2063 create_spool_dirs();
2064 CtdlRegisterProtoHook(cmd_gnet, "GNET", "Get network config");
2065 CtdlRegisterProtoHook(cmd_snet, "SNET", "Set network config");
2066 CtdlRegisterProtoHook(cmd_netp, "NETP", "Identify as network poller");
2067 CtdlRegisterProtoHook(cmd_nsyn, "NSYN", "Synchronize room to node");
2068 CtdlRegisterSessionHook(network_do_queue, EVT_TIMER);