4 * This module handles shared rooms, inter-Citadel mail, and outbound
5 * mailing list processing.
7 * Copyright (c) 2000-2010 by the citadel.org team
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 3 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 * ** NOTE ** A word on the S_NETCONFIGS semaphore:
24 * This is a fairly high-level type of critical section. It ensures that no
25 * two threads work on the netconfigs files at the same time. Since we do
26 * so many things inside these, here are the rules:
27 * 1. begin_critical_section(S_NETCONFIGS) *before* begin_ any others.
28 * 2. Do *not* perform any I/O with the client during these sections.
33 * Duration of time (in seconds) after which pending list subscribe/unsubscribe
34 * requests that have not been confirmed will be deleted.
36 #define EXP 259200 /* three days */
48 #include <sys/types.h>
50 #if TIME_WITH_SYS_TIME
51 # include <sys/time.h>
55 # include <sys/time.h>
64 #include <libcitadel.h>
67 #include "citserver.h"
73 #include "internet_addressing.h"
74 #include "serv_network.h"
75 #include "clientsocket.h"
77 #include "citadel_dirs.h"
86 #include "ctdl_module.h"
90 /* Nonzero while we are doing network processing */
91 static int doing_queue = 0;
94 * When we do network processing, it's accomplished in two passes; one to
95 * gather a list of rooms and one to actually do them. It's ok that rplist
96 * is global; we have a mutex that keeps it safe.
98 struct RoomProcList *rplist = NULL;
101 * We build a map of network nodes during processing.
103 NetMap *the_netmap = NULL;
104 int netmap_changed = 0;
105 char *working_ignetcfg = NULL;
108 * Load or refresh the Citadel network (IGnet) configuration for this node.
110 void load_working_ignetcfg(void) {
114 cfg = CtdlGetSysConfig(IGNETCFG);
119 oldcfg = working_ignetcfg;
120 working_ignetcfg = cfg;
121 if (oldcfg != NULL) {
131 * Keep track of what messages to reject
133 FilterList *load_filter_list(void) {
134 char *serialized_list = NULL;
137 FilterList *newlist = NULL;
140 serialized_list = CtdlGetSysConfig(FILTERLIST);
141 if (serialized_list == NULL) return(NULL); /* if null, no entries */
143 /* Use the string tokenizer to grab one line at a time */
144 for (i=0; i<num_tokens(serialized_list, '\n'); ++i) {
145 extract_token(buf, serialized_list, i, '\n', sizeof buf);
146 nptr = (FilterList *) malloc(sizeof(FilterList));
147 extract_token(nptr->fl_user, buf, 0, '|', sizeof nptr->fl_user);
148 striplt(nptr->fl_user);
149 extract_token(nptr->fl_room, buf, 1, '|', sizeof nptr->fl_room);
150 striplt(nptr->fl_room);
151 extract_token(nptr->fl_node, buf, 2, '|', sizeof nptr->fl_node);
152 striplt(nptr->fl_node);
154 /* Cowardly refuse to add an any/any/any entry that would
155 * end up filtering every single message.
157 if (IsEmptyStr(nptr->fl_user) &&
158 IsEmptyStr(nptr->fl_room) &&
159 IsEmptyStr(nptr->fl_node)) {
163 nptr->next = newlist;
168 free(serialized_list);
173 void free_filter_list(FilterList *fl) {
174 if (fl == NULL) return;
175 free_filter_list(fl->next);
182 * Check the use table. This is a list of messages which have recently
183 * arrived on the system. It is maintained and queried to prevent the same
184 * message from being entered into the database multiple times if it happens
185 * to arrive multiple times by accident.
187 int network_usetable(struct CtdlMessage *msg) {
190 struct cdbdata *cdbut;
193 /* Bail out if we can't generate a message ID */
197 if (msg->cm_fields['I'] == NULL) {
200 if (IsEmptyStr(msg->cm_fields['I'])) {
204 /* Generate the message ID */
205 strcpy(msgid, msg->cm_fields['I']);
206 if (haschar(msgid, '@') == 0) {
208 if (msg->cm_fields['N'] != NULL) {
209 strcat(msgid, msg->cm_fields['N']);
216 cdbut = cdb_fetch(CDB_USETABLE, msgid, strlen(msgid));
219 CtdlLogPrintf(CTDL_DEBUG, "network_usetable() : we already have %s\n", msgid);
223 /* If we got to this point, it's unique: add it. */
224 strcpy(ut.ut_msgid, msgid);
225 ut.ut_timestamp = time(NULL);
226 cdb_store(CDB_USETABLE, msgid, strlen(msgid), &ut, sizeof(struct UseTable) );
232 * Read the network map from its configuration file into memory.
234 void read_network_map(void) {
235 char *serialized_map = NULL;
240 serialized_map = CtdlGetSysConfig(IGNETMAP);
241 if (serialized_map == NULL) return; /* if null, no entries */
243 /* Use the string tokenizer to grab one line at a time */
244 for (i=0; i<num_tokens(serialized_map, '\n'); ++i) {
245 extract_token(buf, serialized_map, i, '\n', sizeof buf);
246 nmptr = (NetMap *) malloc(sizeof(NetMap));
247 extract_token(nmptr->nodename, buf, 0, '|', sizeof nmptr->nodename);
248 nmptr->lastcontact = extract_long(buf, 1);
249 extract_token(nmptr->nexthop, buf, 2, '|', sizeof nmptr->nexthop);
250 nmptr->next = the_netmap;
254 free(serialized_map);
260 * Write the network map from memory back to the configuration file.
262 void write_network_map(void) {
263 char *serialized_map = NULL;
267 if (netmap_changed) {
268 serialized_map = strdup("");
270 if (the_netmap != NULL) {
271 for (nmptr = the_netmap; nmptr != NULL; nmptr = nmptr->next) {
272 serialized_map = realloc(serialized_map,
273 (strlen(serialized_map)+SIZ) );
274 if (!IsEmptyStr(nmptr->nodename)) {
275 snprintf(&serialized_map[strlen(serialized_map)],
279 (long)nmptr->lastcontact,
285 CtdlPutSysConfig(IGNETMAP, serialized_map);
286 free(serialized_map);
289 /* Now free the list */
290 while (the_netmap != NULL) {
291 nmptr = the_netmap->next;
301 * Check the network map and determine whether the supplied node name is
302 * valid. If it is not a neighbor node, supply the name of a neighbor node
303 * which is the next hop. If it *is* a neighbor node, we also fill in the
306 int is_valid_node(char *nexthop, char *secret, char *node) {
318 * First try the neighbor nodes
320 if (working_ignetcfg == NULL) {
321 CtdlLogPrintf(CTDL_ERR, "working_ignetcfg is NULL!\n");
322 if (nexthop != NULL) {
329 if (nexthop != NULL) {
333 /* Use the string tokenizer to grab one line at a time */
334 for (i=0; i<num_tokens(working_ignetcfg, '\n'); ++i) {
335 extract_token(linebuf, working_ignetcfg, i, '\n', sizeof linebuf);
336 extract_token(buf, linebuf, 0, '|', sizeof buf);
337 if (!strcasecmp(buf, node)) {
338 if (nexthop != NULL) {
341 if (secret != NULL) {
342 extract_token(secret, linebuf, 1, '|', 256);
349 return(retval); /* yup, it's a direct neighbor */
353 * If we get to this point we have to see if we know the next hop
355 if (the_netmap != NULL) {
356 for (nmptr = the_netmap; nmptr != NULL; nmptr = nmptr->next) {
357 if (!strcasecmp(nmptr->nodename, node)) {
358 if (nexthop != NULL) {
359 strcpy(nexthop, nmptr->nexthop);
367 * If we get to this point, the supplied node name is bogus.
369 CtdlLogPrintf(CTDL_ERR, "Invalid node name <%s>\n", node);
377 void cmd_gnet(char *argbuf) {
378 char filename[PATH_MAX];
382 if ( (CC->room.QRflags & QR_MAILBOX) && (CC->user.usernum == atol(CC->room.QRname)) ) {
383 /* users can edit the netconfigs for their own mailbox rooms */
385 else if (CtdlAccessCheck(ac_room_aide)) return;
387 assoc_file_name(filename, sizeof filename, &CC->room, ctdl_netcfg_dir);
388 cprintf("%d Network settings for room #%ld <%s>\n",
390 CC->room.QRnumber, CC->room.QRname);
392 fp = fopen(filename, "r");
394 while (fgets(buf, sizeof buf, fp) != NULL) {
395 buf[strlen(buf)-1] = 0;
396 cprintf("%s\n", buf);
405 void cmd_snet(char *argbuf) {
406 char tempfilename[PATH_MAX];
407 char filename[PATH_MAX];
413 if ( (CC->room.QRflags & QR_MAILBOX) && (CC->user.usernum == atol(CC->room.QRname)) ) {
414 /* users can edit the netconfigs for their own mailbox rooms */
416 else if (CtdlAccessCheck(ac_room_aide)) return;
418 CtdlMakeTempFileName(tempfilename, sizeof tempfilename);
419 assoc_file_name(filename, sizeof filename, &CC->room, ctdl_netcfg_dir);
421 fp = fopen(tempfilename, "w");
423 cprintf("%d Cannot open %s: %s\n",
424 ERROR + INTERNAL_ERROR,
429 cprintf("%d %s\n", SEND_LISTING, tempfilename);
430 while (client_getln(buf, sizeof buf) >= 0 && strcmp(buf, "000")) {
431 fprintf(fp, "%s\n", buf);
435 /* Now copy the temp file to its permanent location.
436 * (We copy instead of link because they may be on different filesystems)
438 begin_critical_section(S_NETCONFIGS);
439 fp = fopen(tempfilename, "r");
441 newfp = fopen(filename, "w");
443 while (fgets(buf, sizeof buf, fp) != NULL) {
444 fprintf(newfp, "%s", buf);
450 end_critical_section(S_NETCONFIGS);
451 unlink(tempfilename);
456 * Deliver digest messages
458 void network_deliver_digest(SpoolControl *sc) {
461 struct CtdlMessage *msg = NULL;
464 size_t recps_len = SIZ;
466 struct recptypes *valid;
470 if (sc->num_msgs_spooled < 1) {
471 fclose(sc->digestfp);
476 msg = malloc(sizeof(struct CtdlMessage));
477 memset(msg, 0, sizeof(struct CtdlMessage));
478 msg->cm_magic = CTDLMESSAGE_MAGIC;
479 msg->cm_format_type = FMT_RFC822;
480 msg->cm_anon_type = MES_NORMAL;
482 sprintf(buf, "%ld", time(NULL));
483 msg->cm_fields['T'] = strdup(buf);
484 msg->cm_fields['A'] = strdup(CC->room.QRname);
485 snprintf(buf, sizeof buf, "[%s]", CC->room.QRname);
486 msg->cm_fields['U'] = strdup(buf);
487 sprintf(buf, "room_%s@%s", CC->room.QRname, config.c_fqdn);
488 for (i=0; buf[i]; ++i) {
489 if (isspace(buf[i])) buf[i]='_';
490 buf[i] = tolower(buf[i]);
492 msg->cm_fields['F'] = strdup(buf);
493 msg->cm_fields['R'] = strdup(buf);
495 /* Set the 'List-ID' header */
496 msg->cm_fields['L'] = malloc(1024);
497 snprintf(msg->cm_fields['L'], 1024,
498 "%s <%ld.list-id.%s>",
505 * Go fetch the contents of the digest
507 fseek(sc->digestfp, 0L, SEEK_END);
508 msglen = ftell(sc->digestfp);
510 msg->cm_fields['M'] = malloc(msglen + 1);
511 fseek(sc->digestfp, 0L, SEEK_SET);
512 siz = fread(msg->cm_fields['M'], (size_t)msglen, 1, sc->digestfp);
513 msg->cm_fields['M'][msglen] = '\0';
515 fclose(sc->digestfp);
518 /* Now generate the delivery instructions */
521 * Figure out how big a buffer we need to allocate
523 for (nptr = sc->digestrecps; nptr != NULL; nptr = nptr->next) {
524 recps_len = recps_len + strlen(nptr->name) + 2;
527 recps = malloc(recps_len);
530 CtdlLogPrintf(CTDL_EMERG, "Cannot allocate %ld bytes for recps...\n", (long)recps_len);
537 for (nptr = sc->digestrecps; nptr != NULL; nptr = nptr->next) {
538 if (nptr != sc->digestrecps) {
541 strcat(recps, nptr->name);
544 /* Where do we want bounces and other noise to be heard? Surely not the list members! */
545 snprintf(bounce_to, sizeof bounce_to, "room_aide@%s", config.c_fqdn);
547 /* Now submit the message */
548 valid = validate_recipients(recps, NULL, 0);
551 valid->bounce_to = strdup(bounce_to);
552 valid->envelope_from = strdup(bounce_to);
553 CtdlSubmitMsg(msg, valid, NULL, 0);
555 CtdlFreeMessage(msg);
556 free_recipients(valid);
561 * Deliver list messages to everyone on the list ... efficiently
563 void network_deliver_list(struct CtdlMessage *msg, SpoolControl *sc) {
565 size_t recps_len = SIZ;
566 struct recptypes *valid;
570 /* Don't do this if there were no recipients! */
571 if (sc->listrecps == NULL) return;
573 /* Now generate the delivery instructions */
576 * Figure out how big a buffer we need to allocate
578 for (nptr = sc->listrecps; nptr != NULL; nptr = nptr->next) {
579 recps_len = recps_len + strlen(nptr->name) + 2;
582 recps = malloc(recps_len);
585 CtdlLogPrintf(CTDL_EMERG, "Cannot allocate %ld bytes for recps...\n", (long)recps_len);
592 for (nptr = sc->listrecps; nptr != NULL; nptr = nptr->next) {
593 if (nptr != sc->listrecps) {
596 strcat(recps, nptr->name);
599 /* Where do we want bounces and other noise to be heard? Surely not the list members! */
600 snprintf(bounce_to, sizeof bounce_to, "room_aide@%s", config.c_fqdn);
602 /* Now submit the message */
603 valid = validate_recipients(recps, NULL, 0);
606 valid->bounce_to = strdup(bounce_to);
607 valid->envelope_from = strdup(bounce_to);
608 CtdlSubmitMsg(msg, valid, NULL, 0);
609 free_recipients(valid);
611 /* Do not call CtdlFreeMessage(msg) here; the caller will free it. */
618 * Spools out one message from the list.
620 void network_spool_msg(long msgnum, void *userdata) {
623 char *newpath = NULL;
624 size_t instr_len = SIZ;
625 struct CtdlMessage *msg = NULL;
628 struct ser_ret sermsg;
630 char filename[PATH_MAX];
634 int delete_after_send = 0; /* Set to 1 to delete after spooling */
635 int ok_to_participate = 0;
636 struct recptypes *valid;
638 sc = (SpoolControl *)userdata;
641 * Process mailing list recipients
644 if (sc->listrecps != NULL) {
645 /* Fetch the message. We're going to need to modify it
646 * in order to insert the [list name] in it, etc.
648 msg = CtdlFetchMessage(msgnum, 1);
651 /* Set the 'List-ID' header */
652 if (msg->cm_fields['L'] != NULL) {
653 free(msg->cm_fields['L']);
655 msg->cm_fields['L'] = malloc(1024);
656 snprintf(msg->cm_fields['L'], 1024,
657 "%s <%ld.list-id.%s>",
663 /* Prepend "[List name]" to the subject */
664 if (msg->cm_fields['U'] == NULL) {
665 msg->cm_fields['U'] = strdup("(no subject)");
667 snprintf(buf, sizeof buf, "[%s] %s", CC->room.QRname, msg->cm_fields['U']);
668 free(msg->cm_fields['U']);
669 msg->cm_fields['U'] = strdup(buf);
671 /* Set the recipient of the list message to the
672 * email address of the room itself.
673 * FIXME ... I want to be able to pick any address
675 if (msg->cm_fields['R'] != NULL) {
676 free(msg->cm_fields['R']);
678 msg->cm_fields['R'] = malloc(256);
679 snprintf(msg->cm_fields['R'], 256,
680 "room_%s@%s", CC->room.QRname,
682 for (i=0; msg->cm_fields['R'][i]; ++i) {
683 if (isspace(msg->cm_fields['R'][i])) {
684 msg->cm_fields['R'][i] = '_';
688 /* Handle delivery */
689 network_deliver_list(msg, sc);
690 CtdlFreeMessage(msg);
695 * Process digest recipients
697 if ((sc->digestrecps != NULL) && (sc->digestfp != NULL)) {
698 msg = CtdlFetchMessage(msgnum, 1);
700 fprintf(sc->digestfp, " -----------------------------------"
701 "------------------------------------"
703 fprintf(sc->digestfp, "From: ");
704 if (msg->cm_fields['A'] != NULL) {
705 fprintf(sc->digestfp, "%s ", msg->cm_fields['A']);
707 if (msg->cm_fields['F'] != NULL) {
708 fprintf(sc->digestfp, "<%s> ", msg->cm_fields['F']);
710 else if (msg->cm_fields['N'] != NULL) {
711 fprintf(sc->digestfp, "@%s ", msg->cm_fields['N']);
713 fprintf(sc->digestfp, "\n");
714 if (msg->cm_fields['U'] != NULL) {
715 fprintf(sc->digestfp, "Subject: %s\n", msg->cm_fields['U']);
718 CC->redirect_buffer = NewStrBufPlain(NULL, SIZ);
720 safestrncpy(CC->preferred_formats, "text/plain", sizeof CC->preferred_formats);
721 CtdlOutputPreLoadedMsg(msg, MT_CITADEL, HEADERS_NONE, 0, 0, 0);
723 StrBufTrim(CC->redirect_buffer);
724 fwrite(HKEY("\n"), 1, sc->digestfp);
725 fwrite(SKEY(CC->redirect_buffer), 1, sc->digestfp);
726 fwrite(HKEY("\n"), 1, sc->digestfp);
728 FreeStrBuf(&CC->redirect_buffer);
730 sc->num_msgs_spooled += 1;
736 * Process client-side list participations for this room
739 if (sc->participates != NULL) {
740 msg = CtdlFetchMessage(msgnum, 1);
743 /* Only send messages which originated on our own Citadel
744 * network, otherwise we'll end up sending the remote
745 * mailing list's messages back to it, which is rude...
747 ok_to_participate = 0;
748 if (msg->cm_fields['N'] != NULL) {
749 if (!strcasecmp(msg->cm_fields['N'], config.c_nodename)) {
750 ok_to_participate = 1;
752 if (is_valid_node(NULL, NULL, msg->cm_fields['N']) == 0) {
753 ok_to_participate = 1;
756 if (ok_to_participate) {
757 if (msg->cm_fields['F'] != NULL) {
758 free(msg->cm_fields['F']);
760 msg->cm_fields['F'] = malloc(SIZ);
761 /* Replace the Internet email address of the actual
762 * author with the email address of the room itself,
763 * so the remote listserv doesn't reject us.
764 * FIXME ... I want to be able to pick any address
766 snprintf(msg->cm_fields['F'], SIZ,
767 "room_%s@%s", CC->room.QRname,
769 for (i=0; msg->cm_fields['F'][i]; ++i) {
770 if (isspace(msg->cm_fields['F'][i])) {
771 msg->cm_fields['F'][i] = '_';
776 * Figure out how big a buffer we need to allocate
778 for (nptr = sc->participates; nptr != NULL; nptr = nptr->next) {
780 if (msg->cm_fields['R'] == NULL) {
781 free(msg->cm_fields['R']);
783 msg->cm_fields['R'] = strdup(nptr->name);
785 valid = validate_recipients(nptr->name, NULL, 0);
786 CtdlSubmitMsg(msg, valid, "", 0);
787 free_recipients(valid);
791 CtdlFreeMessage(msg);
796 * Process IGnet push shares
798 msg = CtdlFetchMessage(msgnum, 1);
802 /* Prepend our node name to the Path field whenever
803 * sending a message to another IGnet node
805 if (msg->cm_fields['P'] == NULL) {
806 msg->cm_fields['P'] = strdup("username");
808 newpath_len = strlen(msg->cm_fields['P']) +
809 strlen(config.c_nodename) + 2;
810 newpath = malloc(newpath_len);
811 snprintf(newpath, newpath_len, "%s!%s",
812 config.c_nodename, msg->cm_fields['P']);
813 free(msg->cm_fields['P']);
814 msg->cm_fields['P'] = newpath;
817 * Determine if this message is set to be deleted
818 * after sending out on the network
820 if (msg->cm_fields['S'] != NULL) {
821 if (!strcasecmp(msg->cm_fields['S'], "CANCEL")) {
822 delete_after_send = 1;
826 /* Now send it to every node */
827 if (sc->ignet_push_shares != NULL)
828 for (mptr = sc->ignet_push_shares; mptr != NULL;
833 /* Check for valid node name */
834 if (is_valid_node(NULL, NULL, mptr->remote_nodename) != 0) {
835 CtdlLogPrintf(CTDL_ERR, "Invalid node <%s>\n", mptr->remote_nodename);
839 /* Check for split horizon */
840 CtdlLogPrintf(CTDL_DEBUG, "Path is %s\n", msg->cm_fields['P']);
841 bang = num_tokens(msg->cm_fields['P'], '!');
842 if (bang > 1) for (i=0; i<(bang-1); ++i) {
843 extract_token(buf, msg->cm_fields['P'], i, '!', sizeof buf);
844 CtdlLogPrintf(CTDL_DEBUG, "Compare <%s> to <%s>\n",
845 buf, mptr->remote_nodename) ;
846 if (!strcasecmp(buf, mptr->remote_nodename)) {
848 CtdlLogPrintf(CTDL_DEBUG, "Not sending to %s\n",
849 mptr->remote_nodename);
852 CtdlLogPrintf(CTDL_DEBUG, "Sending to %s\n", mptr->remote_nodename);
856 /* Send the message */
860 * Force the message to appear in the correct room
861 * on the far end by setting the C field correctly
863 if (msg->cm_fields['C'] != NULL) {
864 free(msg->cm_fields['C']);
866 if (!IsEmptyStr(mptr->remote_roomname)) {
867 msg->cm_fields['C'] = strdup(mptr->remote_roomname);
870 msg->cm_fields['C'] = strdup(CC->room.QRname);
873 /* serialize it for transmission */
874 serialize_message(&sermsg, msg);
875 if (sermsg.len > 0) {
877 /* write it to the spool file */
878 snprintf(filename, sizeof filename,"%s/%s",
880 mptr->remote_nodename);
881 CtdlLogPrintf(CTDL_DEBUG, "Appending to %s\n", filename);
882 fp = fopen(filename, "ab");
889 CtdlLogPrintf(CTDL_ERR, "%s: %s\n", filename, strerror(errno));
892 /* free the serialized version */
898 CtdlFreeMessage(msg);
901 /* update lastsent */
902 sc->lastsent = msgnum;
904 /* Delete this message if delete-after-send is set */
905 if (delete_after_send) {
906 CtdlDeleteMessages(CC->room.QRname, &msgnum, 1, "");
912 int read_spoolcontrol_file(SpoolControl **scc, char *filename)
918 char roomname[ROOMNAMELEN];
921 int skipthisline = 0;
922 namelist *nptr = NULL;
923 maplist *mptr = NULL;
926 fp = fopen(filename, "r");
930 sc = malloc(sizeof(SpoolControl));
931 memset(sc, 0, sizeof(SpoolControl));
934 while (fgets(buf, sizeof buf, fp) != NULL) {
935 buf[strlen(buf)-1] = 0;
937 extract_token(instr, buf, 0, '|', sizeof instr);
938 if (!strcasecmp(instr, strof(lastsent))) {
939 sc->lastsent = extract_long(buf, 1);
941 else if (!strcasecmp(instr, strof(listrecp))) {
943 malloc(sizeof(namelist));
944 nptr->next = sc->listrecps;
945 extract_token(nptr->name, buf, 1, '|', sizeof nptr->name);
946 sc->listrecps = nptr;
948 else if (!strcasecmp(instr, strof(participate))) {
950 malloc(sizeof(namelist));
951 nptr->next = sc->participates;
952 extract_token(nptr->name, buf, 1, '|', sizeof nptr->name);
953 sc->participates = nptr;
955 else if (!strcasecmp(instr, strof(digestrecp))) {
957 malloc(sizeof(namelist));
958 nptr->next = sc->digestrecps;
959 extract_token(nptr->name, buf, 1, '|', sizeof nptr->name);
960 sc->digestrecps = nptr;
962 else if (!strcasecmp(instr, strof(ignet_push_share))) {
963 extract_token(nodename, buf, 1, '|', sizeof nodename);
964 extract_token(roomname, buf, 2, '|', sizeof roomname);
965 mptr = (maplist *) malloc(sizeof(maplist));
966 mptr->next = sc->ignet_push_shares;
967 strcpy(mptr->remote_nodename, nodename);
968 strcpy(mptr->remote_roomname, roomname);
969 sc->ignet_push_shares = mptr;
972 /* Preserve 'other' lines ... *unless* they happen to
973 * be subscribe/unsubscribe pendings with expired
977 if (!strncasecmp(buf, strof(subpending)"|", 11)) {
978 if (time(NULL) - extract_long(buf, 4) > EXP) {
982 if (!strncasecmp(buf, strof(unsubpending)"|", 13)) {
983 if (time(NULL) - extract_long(buf, 3) > EXP) {
988 if (skipthisline == 0) {
989 linesize = strlen(buf);
990 sc->misc = realloc(sc->misc,
991 (miscsize + linesize + 2) );
992 sprintf(&sc->misc[miscsize], "%s\n", buf);
993 miscsize = miscsize + linesize + 1;
1003 void free_spoolcontrol_struct(SpoolControl **scc)
1006 namelist *nptr = NULL;
1007 maplist *mptr = NULL;
1010 while (sc->listrecps != NULL) {
1011 nptr = sc->listrecps->next;
1012 free(sc->listrecps);
1013 sc->listrecps = nptr;
1015 /* Do the same for digestrecps */
1016 while (sc->digestrecps != NULL) {
1017 nptr = sc->digestrecps->next;
1018 free(sc->digestrecps);
1019 sc->digestrecps = nptr;
1021 /* Do the same for participates */
1022 while (sc->participates != NULL) {
1023 nptr = sc->participates->next;
1024 free(sc->participates);
1025 sc->participates = nptr;
1027 while (sc->ignet_push_shares != NULL) {
1028 mptr = sc->ignet_push_shares->next;
1029 free(sc->ignet_push_shares);
1030 sc->ignet_push_shares = mptr;
1037 int writenfree_spoolcontrol_file(SpoolControl **scc, char *filename)
1041 namelist *nptr = NULL;
1042 maplist *mptr = NULL;
1045 fp = fopen(filename, "w");
1047 CtdlLogPrintf(CTDL_CRIT, "ERROR: cannot open %s: %s\n",
1048 filename, strerror(errno));
1049 free_spoolcontrol_struct(scc);
1052 fprintf(fp, "lastsent|%ld\n", sc->lastsent);
1054 /* Write out the listrecps while freeing from memory at the
1055 * same time. Am I clever or what? :)
1057 while (sc->listrecps != NULL) {
1058 fprintf(fp, "listrecp|%s\n", sc->listrecps->name);
1059 nptr = sc->listrecps->next;
1060 free(sc->listrecps);
1061 sc->listrecps = nptr;
1063 /* Do the same for digestrecps */
1064 while (sc->digestrecps != NULL) {
1065 fprintf(fp, "digestrecp|%s\n", sc->digestrecps->name);
1066 nptr = sc->digestrecps->next;
1067 free(sc->digestrecps);
1068 sc->digestrecps = nptr;
1070 /* Do the same for participates */
1071 while (sc->participates != NULL) {
1072 fprintf(fp, "participate|%s\n", sc->participates->name);
1073 nptr = sc->participates->next;
1074 free(sc->participates);
1075 sc->participates = nptr;
1077 while (sc->ignet_push_shares != NULL) {
1078 fprintf(fp, "ignet_push_share|%s", sc->ignet_push_shares->remote_nodename);
1079 if (!IsEmptyStr(sc->ignet_push_shares->remote_roomname)) {
1080 fprintf(fp, "|%s", sc->ignet_push_shares->remote_roomname);
1083 mptr = sc->ignet_push_shares->next;
1084 free(sc->ignet_push_shares);
1085 sc->ignet_push_shares = mptr;
1087 if (sc->misc != NULL) {
1088 fwrite(sc->misc, strlen(sc->misc), 1, fp);
1098 int is_recipient(SpoolControl *sc, const char *Name)
1104 nptr = sc->listrecps;
1105 while (nptr != NULL) {
1106 if (strncmp(Name, nptr->name, len)==0)
1110 /* Do the same for digestrecps */
1111 nptr = sc->digestrecps;
1112 while (nptr != NULL) {
1113 if (strncmp(Name, nptr->name, len)==0)
1117 /* Do the same for participates */
1118 nptr = sc->participates;
1119 while (nptr != NULL) {
1120 if (strncmp(Name, nptr->name, len)==0)
1129 * Batch up and send all outbound traffic from the current room
1131 void network_spoolout_room(char *room_to_spool) {
1133 char filename[PATH_MAX];
1138 * If the room doesn't exist, don't try to perform its networking tasks.
1139 * Normally this should never happen, but once in a while maybe a room gets
1140 * queued for networking and then deleted before it can happen.
1142 if (CtdlGetRoom(&CC->room, room_to_spool) != 0) {
1143 CtdlLogPrintf(CTDL_CRIT, "ERROR: cannot load <%s>\n", room_to_spool);
1147 assoc_file_name(filename, sizeof filename, &CC->room, ctdl_netcfg_dir);
1148 begin_critical_section(S_NETCONFIGS);
1150 /* Only do net processing for rooms that have netconfigs */
1151 if (!read_spoolcontrol_file(&sc, filename))
1153 end_critical_section(S_NETCONFIGS);
1156 CtdlLogPrintf(CTDL_INFO, "Networking started for <%s>\n", CC->room.QRname);
1158 /* If there are digest recipients, we have to build a digest */
1159 if (sc->digestrecps != NULL) {
1160 sc->digestfp = tmpfile();
1161 fprintf(sc->digestfp, "Content-type: text/plain\n\n");
1164 /* Do something useful */
1165 CtdlForEachMessage(MSGS_GT, sc->lastsent, NULL, NULL, NULL,
1166 network_spool_msg, sc);
1168 /* If we wrote a digest, deliver it and then close it */
1169 snprintf(buf, sizeof buf, "room_%s@%s",
1170 CC->room.QRname, config.c_fqdn);
1171 for (i=0; buf[i]; ++i) {
1172 buf[i] = tolower(buf[i]);
1173 if (isspace(buf[i])) buf[i] = '_';
1175 if (sc->digestfp != NULL) {
1176 fprintf(sc->digestfp, " -----------------------------------"
1177 "------------------------------------"
1179 "You are subscribed to the '%s' "
1181 "To post to the list: %s\n",
1182 CC->room.QRname, buf
1184 network_deliver_digest(sc); /* deliver and close */
1187 /* Now rewrite the config file */
1188 writenfree_spoolcontrol_file (&sc, filename);
1189 end_critical_section(S_NETCONFIGS);
1195 * Send the *entire* contents of the current room to one specific network node,
1196 * ignoring anything we know about which messages have already undergone
1197 * network processing. This can be used to bring a new node into sync.
1199 int network_sync_to(char *target_node) {
1201 int num_spooled = 0;
1207 char filename[PATH_MAX];
1210 /* Grab the configuration line we're looking for */
1211 assoc_file_name(filename, sizeof filename, &CC->room, ctdl_netcfg_dir);
1212 begin_critical_section(S_NETCONFIGS);
1213 fp = fopen(filename, "r");
1215 end_critical_section(S_NETCONFIGS);
1218 while (fgets(buf, sizeof buf, fp) != NULL) {
1219 buf[strlen(buf)-1] = 0;
1220 extract_token(sc_type, buf, 0, '|', sizeof sc_type);
1221 extract_token(sc_node, buf, 1, '|', sizeof sc_node);
1222 extract_token(sc_room, buf, 2, '|', sizeof sc_room);
1223 if ( (!strcasecmp(sc_type, "ignet_push_share"))
1224 && (!strcasecmp(sc_node, target_node)) ) {
1227 /* Concise syntax because we don't need a full linked-list */
1228 memset(&sc, 0, sizeof(SpoolControl));
1229 sc.ignet_push_shares = (maplist *)
1230 malloc(sizeof(maplist));
1231 sc.ignet_push_shares->next = NULL;
1232 safestrncpy(sc.ignet_push_shares->remote_nodename,
1234 sizeof sc.ignet_push_shares->remote_nodename);
1235 safestrncpy(sc.ignet_push_shares->remote_roomname,
1237 sizeof sc.ignet_push_shares->remote_roomname);
1241 end_critical_section(S_NETCONFIGS);
1243 if (!found_node) return(-1);
1245 /* Send ALL messages */
1246 num_spooled = CtdlForEachMessage(MSGS_ALL, 0L, NULL, NULL, NULL,
1247 network_spool_msg, &sc);
1249 /* Concise cleanup because we know there's only one node in the sc */
1250 free(sc.ignet_push_shares);
1252 CtdlLogPrintf(CTDL_NOTICE, "Synchronized %d messages to <%s>\n",
1253 num_spooled, target_node);
1254 return(num_spooled);
1259 * Implements the NSYN command
1261 void cmd_nsyn(char *argbuf) {
1263 char target_node[256];
1265 if (CtdlAccessCheck(ac_aide)) return;
1267 extract_token(target_node, argbuf, 0, '|', sizeof target_node);
1268 num_spooled = network_sync_to(target_node);
1269 if (num_spooled >= 0) {
1270 cprintf("%d Spooled %d messages.\n", CIT_OK, num_spooled);
1273 cprintf("%d No such room/node share exists.\n",
1274 ERROR + ROOM_NOT_FOUND);
1281 * Batch up and send all outbound traffic from the current room
1283 void network_queue_room(struct ctdlroom *qrbuf, void *data) {
1284 struct RoomProcList *ptr;
1286 ptr = (struct RoomProcList *) malloc(sizeof (struct RoomProcList));
1287 if (ptr == NULL) return;
1289 safestrncpy(ptr->name, qrbuf->QRname, sizeof ptr->name);
1290 begin_critical_section(S_RPLIST);
1293 end_critical_section(S_RPLIST);
1296 void destroy_network_queue_room(void)
1298 struct RoomProcList *cur, *p;
1299 NetMap *nmcur, *nmp;
1302 begin_critical_section(S_RPLIST);
1310 end_critical_section(S_RPLIST);
1313 while (nmcur != NULL)
1320 if (working_ignetcfg != NULL)
1321 free (working_ignetcfg);
1322 working_ignetcfg = NULL;
1327 * Learn topology from path fields
1329 void network_learn_topology(char *node, char *path) {
1333 strcpy(nexthop, "");
1335 if (num_tokens(path, '!') < 3) return;
1336 for (nmptr = the_netmap; nmptr != NULL; nmptr = nmptr->next) {
1337 if (!strcasecmp(nmptr->nodename, node)) {
1338 extract_token(nmptr->nexthop, path, 0, '!', sizeof nmptr->nexthop);
1339 nmptr->lastcontact = time(NULL);
1345 /* If we got here then it's not in the map, so add it. */
1346 nmptr = (NetMap *) malloc(sizeof (NetMap));
1347 strcpy(nmptr->nodename, node);
1348 nmptr->lastcontact = time(NULL);
1349 extract_token(nmptr->nexthop, path, 0, '!', sizeof nmptr->nexthop);
1350 nmptr->next = the_netmap;
1359 * Bounce a message back to the sender
1361 void network_bounce(struct CtdlMessage *msg, char *reason) {
1362 char *oldpath = NULL;
1364 char bouncesource[SIZ];
1365 char recipient[SIZ];
1366 struct recptypes *valid = NULL;
1367 char force_room[ROOMNAMELEN];
1368 static int serialnum = 0;
1371 CtdlLogPrintf(CTDL_DEBUG, "entering network_bounce()\n");
1373 if (msg == NULL) return;
1375 snprintf(bouncesource, sizeof bouncesource, "%s@%s", BOUNCESOURCE, config.c_nodename);
1378 * Give it a fresh message ID
1380 if (msg->cm_fields['I'] != NULL) {
1381 free(msg->cm_fields['I']);
1383 snprintf(buf, sizeof buf, "%ld.%04lx.%04x@%s",
1384 (long)time(NULL), (long)getpid(), ++serialnum, config.c_fqdn);
1385 msg->cm_fields['I'] = strdup(buf);
1388 * FIXME ... right now we're just sending a bounce; we really want to
1389 * include the text of the bounced message.
1391 if (msg->cm_fields['M'] != NULL) {
1392 free(msg->cm_fields['M']);
1394 msg->cm_fields['M'] = strdup(reason);
1395 msg->cm_format_type = 0;
1398 * Turn the message around
1400 if (msg->cm_fields['R'] == NULL) {
1401 free(msg->cm_fields['R']);
1404 if (msg->cm_fields['D'] == NULL) {
1405 free(msg->cm_fields['D']);
1408 snprintf(recipient, sizeof recipient, "%s@%s",
1409 msg->cm_fields['A'], msg->cm_fields['N']);
1411 if (msg->cm_fields['A'] == NULL) {
1412 free(msg->cm_fields['A']);
1415 if (msg->cm_fields['N'] == NULL) {
1416 free(msg->cm_fields['N']);
1419 if (msg->cm_fields['U'] == NULL) {
1420 free(msg->cm_fields['U']);
1423 msg->cm_fields['A'] = strdup(BOUNCESOURCE);
1424 msg->cm_fields['N'] = strdup(config.c_nodename);
1425 msg->cm_fields['U'] = strdup("Delivery Status Notification (Failure)");
1427 /* prepend our node to the path */
1428 if (msg->cm_fields['P'] != NULL) {
1429 oldpath = msg->cm_fields['P'];
1430 msg->cm_fields['P'] = NULL;
1433 oldpath = strdup("unknown_user");
1435 size = strlen(oldpath) + SIZ;
1436 msg->cm_fields['P'] = malloc(size);
1437 snprintf(msg->cm_fields['P'], size, "%s!%s", config.c_nodename, oldpath);
1440 /* Now submit the message */
1441 valid = validate_recipients(recipient, NULL, 0);
1442 if (valid != NULL) if (valid->num_error != 0) {
1443 free_recipients(valid);
1446 if ( (valid == NULL) || (!strcasecmp(recipient, bouncesource)) ) {
1447 strcpy(force_room, config.c_aideroom);
1450 strcpy(force_room, "");
1452 if ( (valid == NULL) && IsEmptyStr(force_room) ) {
1453 strcpy(force_room, config.c_aideroom);
1455 CtdlSubmitMsg(msg, valid, force_room, 0);
1458 if (valid != NULL) free_recipients(valid);
1459 CtdlFreeMessage(msg);
1460 CtdlLogPrintf(CTDL_DEBUG, "leaving network_bounce()\n");
1467 * Process a buffer containing a single message from a single file
1468 * from the inbound queue
1470 void network_process_buffer(char *buffer, long size) {
1471 struct CtdlMessage *msg = NULL;
1474 struct recptypes *recp = NULL;
1475 char target_room[ROOMNAMELEN];
1476 struct ser_ret sermsg;
1477 char *oldpath = NULL;
1478 char filename[PATH_MAX];
1481 unsigned char firstbyte;
1482 unsigned char lastbyte;
1484 CtdlLogPrintf(CTDL_DEBUG, "network_process_buffer() processing %ld bytes\n", size);
1486 /* Validate just a little bit. First byte should be FF and * last byte should be 00. */
1487 firstbyte = buffer[0];
1488 lastbyte = buffer[size-1];
1489 if ( (firstbyte != 255) || (lastbyte != 0) ) {
1490 CtdlLogPrintf(CTDL_ERR, "Corrupt message ignored. Length=%ld, firstbyte = %d, lastbyte = %d\n",
1491 size, firstbyte, lastbyte);
1495 /* Set default target room to trash */
1496 strcpy(target_room, TWITROOM);
1498 /* Load the message into memory */
1499 msg = (struct CtdlMessage *) malloc(sizeof(struct CtdlMessage));
1500 memset(msg, 0, sizeof(struct CtdlMessage));
1501 msg->cm_magic = CTDLMESSAGE_MAGIC;
1502 msg->cm_anon_type = buffer[1];
1503 msg->cm_format_type = buffer[2];
1505 for (pos = 3; pos < size; ++pos) {
1506 field = buffer[pos];
1507 msg->cm_fields[field] = strdup(&buffer[pos+1]);
1508 pos = pos + strlen(&buffer[(int)pos]);
1511 /* Check for message routing */
1512 if (msg->cm_fields['D'] != NULL) {
1513 if (strcasecmp(msg->cm_fields['D'], config.c_nodename)) {
1515 /* route the message */
1516 strcpy(nexthop, "");
1517 if (is_valid_node(nexthop, NULL, msg->cm_fields['D']) == 0) {
1518 /* prepend our node to the path */
1519 if (msg->cm_fields['P'] != NULL) {
1520 oldpath = msg->cm_fields['P'];
1521 msg->cm_fields['P'] = NULL;
1524 oldpath = strdup("unknown_user");
1526 size = strlen(oldpath) + SIZ;
1527 msg->cm_fields['P'] = malloc(size);
1528 snprintf(msg->cm_fields['P'], size, "%s!%s",
1529 config.c_nodename, oldpath);
1532 /* serialize the message */
1533 serialize_message(&sermsg, msg);
1536 if (IsEmptyStr(nexthop)) {
1537 strcpy(nexthop, msg->cm_fields['D']);
1544 CtdlLogPrintf(CTDL_DEBUG, "Appending to %s\n", filename);
1545 fp = fopen(filename, "ab");
1552 CtdlLogPrintf(CTDL_ERR, "%s: %s\n", filename, strerror(errno));
1555 CtdlFreeMessage(msg);
1559 else { /* invalid destination node name */
1562 "A message you sent could not be delivered due to an invalid destination node"
1563 " name. Please check the address and try sending the message again.\n");
1572 * Check to see if we already have a copy of this message, and
1573 * abort its processing if so. (We used to post a warning to Aide>
1574 * every time this happened, but the network is now so densely
1575 * connected that it's inevitable.)
1577 if (network_usetable(msg) != 0) {
1578 CtdlFreeMessage(msg);
1582 /* Learn network topology from the path */
1583 if ((msg->cm_fields['N'] != NULL) && (msg->cm_fields['P'] != NULL)) {
1584 network_learn_topology(msg->cm_fields['N'], msg->cm_fields['P']);
1587 /* Is the sending node giving us a very persuasive suggestion about
1588 * which room this message should be saved in? If so, go with that.
1590 if (msg->cm_fields['C'] != NULL) {
1591 safestrncpy(target_room, msg->cm_fields['C'], sizeof target_room);
1594 /* Otherwise, does it have a recipient? If so, validate it... */
1595 else if (msg->cm_fields['R'] != NULL) {
1596 recp = validate_recipients(msg->cm_fields['R'], NULL, 0);
1597 if (recp != NULL) if (recp->num_error != 0) {
1599 "A message you sent could not be delivered due to an invalid address.\n"
1600 "Please check the address and try sending the message again.\n");
1602 free_recipients(recp);
1603 CtdlLogPrintf(CTDL_DEBUG, "Bouncing message due to invalid recipient address.\n");
1606 strcpy(target_room, ""); /* no target room if mail */
1609 /* Our last shot at finding a home for this message is to see if
1610 * it has the O field (Originating room) set.
1612 else if (msg->cm_fields['O'] != NULL) {
1613 safestrncpy(target_room, msg->cm_fields['O'], sizeof target_room);
1616 /* Strip out fields that are only relevant during transit */
1617 if (msg->cm_fields['D'] != NULL) {
1618 free(msg->cm_fields['D']);
1619 msg->cm_fields['D'] = NULL;
1621 if (msg->cm_fields['C'] != NULL) {
1622 free(msg->cm_fields['C']);
1623 msg->cm_fields['C'] = NULL;
1626 /* save the message into a room */
1627 if (PerformNetprocHooks(msg, target_room) == 0) {
1628 msg->cm_flags = CM_SKIP_HOOKS;
1629 CtdlSubmitMsg(msg, recp, target_room, 0);
1631 CtdlFreeMessage(msg);
1632 free_recipients(recp);
1637 * Process a single message from a single file from the inbound queue
1639 void network_process_message(FILE *fp, long msgstart, long msgend) {
1644 hold_pos = ftell(fp);
1645 size = msgend - msgstart + 1;
1646 buffer = malloc(size);
1647 if (buffer != NULL) {
1648 fseek(fp, msgstart, SEEK_SET);
1649 if (fread(buffer, size, 1, fp) > 0) {
1650 network_process_buffer(buffer, size);
1655 fseek(fp, hold_pos, SEEK_SET);
1660 * Process a single file from the inbound queue
1662 void network_process_file(char *filename) {
1664 long msgstart = (-1L);
1665 long msgend = (-1L);
1670 fp = fopen(filename, "rb");
1672 CtdlLogPrintf(CTDL_CRIT, "Error opening %s: %s\n", filename, strerror(errno));
1676 fseek(fp, 0L, SEEK_END);
1677 CtdlLogPrintf(CTDL_INFO, "network: processing %ld bytes from %s\n", ftell(fp), filename);
1680 /* Look for messages in the data stream and break them out */
1681 while (ch = getc(fp), ch >= 0) {
1684 if (msgstart >= 0L) {
1685 msgend = msgcur - 1;
1686 network_process_message(fp, msgstart, msgend);
1694 msgend = msgcur - 1;
1695 if (msgstart >= 0L) {
1696 network_process_message(fp, msgstart, msgend);
1705 * Process anything in the inbound queue
1707 void network_do_spoolin(void) {
1710 struct stat statbuf;
1711 char filename[PATH_MAX];
1712 static time_t last_spoolin_mtime = 0L;
1715 * Check the spoolin directory's modification time. If it hasn't
1716 * been touched, we don't need to scan it.
1718 if (stat(ctdl_netin_dir, &statbuf)) return;
1719 if (statbuf.st_mtime == last_spoolin_mtime) {
1720 CtdlLogPrintf(CTDL_DEBUG, "network: nothing in inbound queue\n");
1723 last_spoolin_mtime = statbuf.st_mtime;
1724 CtdlLogPrintf(CTDL_DEBUG, "network: processing inbound queue\n");
1727 * Ok, there's something interesting in there, so scan it.
1729 dp = opendir(ctdl_netin_dir);
1730 if (dp == NULL) return;
1732 while (d = readdir(dp), d != NULL) {
1733 if ((strcmp(d->d_name, ".")) && (strcmp(d->d_name, ".."))) {
1739 network_process_file(filename);
1747 * Delete any files in the outbound queue that were intended
1748 * to be sent to nodes which no longer exist.
1750 void network_purge_spoolout(void) {
1753 char filename[PATH_MAX];
1757 dp = opendir(ctdl_netout_dir);
1758 if (dp == NULL) return;
1760 while (d = readdir(dp), d != NULL) {
1761 if (!strcmp(d->d_name, ".") || !strcmp(d->d_name, ".."))
1769 strcpy(nexthop, "");
1770 i = is_valid_node(nexthop, NULL, d->d_name);
1772 if ( (i != 0) || !IsEmptyStr(nexthop) ) {
1783 * receive network spool from the remote system
1785 void receive_spool(int *sock, char *remote_nodename) {
1787 long download_len = 0L;
1788 long bytes_received = 0L;
1789 long bytes_copied = 0L;
1791 static char pbuf[IGNET_PACKET_SIZE];
1792 char tempfilename[PATH_MAX];
1793 char filename[PATH_MAX];
1797 CtdlMakeTempFileName(tempfilename, sizeof tempfilename);
1798 if (sock_puts(sock, "NDOP") < 0) return;
1799 if (sock_getln(sock, buf, sizeof buf) < 0) return;
1800 CtdlLogPrintf(CTDL_DEBUG, "<%s\n", buf);
1801 if (buf[0] != '2') {
1804 download_len = extract_long(&buf[4], 0);
1806 bytes_received = 0L;
1807 fp = fopen(tempfilename, "w");
1809 CtdlLogPrintf(CTDL_CRIT, "cannot open download file locally: %s\n",
1814 while (bytes_received < download_len) {
1816 * If shutting down we can exit here and unlink the temp file.
1817 * this shouldn't loose us any messages.
1819 if (CtdlThreadCheckStop())
1822 unlink(tempfilename);
1825 snprintf(buf, sizeof buf, "READ %ld|%ld",
1827 ((download_len - bytes_received > IGNET_PACKET_SIZE)
1828 ? IGNET_PACKET_SIZE : (download_len - bytes_received)));
1829 if (sock_puts(sock, buf) < 0) {
1831 unlink(tempfilename);
1834 if (sock_getln(sock, buf, sizeof buf) < 0) {
1836 unlink(tempfilename);
1839 if (buf[0] == '6') {
1840 plen = extract_long(&buf[4], 0);
1841 if (sock_read(sock, pbuf, plen, 1) < 0) {
1843 unlink(tempfilename);
1846 fwrite((char *) pbuf, plen, 1, fp);
1847 bytes_received = bytes_received + plen;
1852 /** Last chance for shutdown exit */
1853 if (CtdlThreadCheckStop())
1855 unlink(tempfilename);
1858 if (sock_puts(sock, "CLOS") < 0) {
1859 unlink(tempfilename);
1863 * From here on we must complete or messages will get lost
1865 if (sock_getln(sock, buf, sizeof buf) < 0) {
1866 unlink(tempfilename);
1869 if (download_len > 0) {
1870 CtdlLogPrintf(CTDL_NOTICE, "Received %ld octets from <%s>\n", download_len, remote_nodename);
1872 CtdlLogPrintf(CTDL_DEBUG, "%s\n", buf);
1874 /* Now copy the temp file to its permanent location.
1875 * (We copy instead of link because they may be on different filesystems)
1877 begin_critical_section(S_NETSPOOL);
1885 fp = fopen(tempfilename, "r");
1887 newfp = fopen(filename, "w");
1888 if (newfp != NULL) {
1890 while (bytes_copied < download_len) {
1891 plen = download_len - bytes_copied;
1892 if (plen > sizeof buf) {
1895 siz = fread(buf, plen, 1, fp);
1896 fwrite(buf, plen, 1, newfp);
1897 bytes_copied += plen;
1903 end_critical_section(S_NETSPOOL);
1904 unlink(tempfilename);
1910 * transmit network spool to the remote system
1912 void transmit_spool(int *sock, char *remote_nodename)
1917 long bytes_to_write, thisblock, bytes_written;
1921 if (sock_puts(sock, "NUOP") < 0) return;
1922 if (sock_getln(sock, buf, sizeof buf) < 0) return;
1923 CtdlLogPrintf(CTDL_DEBUG, "<%s\n", buf);
1924 if (buf[0] != '2') {
1928 snprintf(sfname, sizeof sfname,
1932 fd = open(sfname, O_RDONLY);
1934 if (errno != ENOENT) {
1935 CtdlLogPrintf(CTDL_CRIT, "cannot open upload file locally: %s\n",
1941 while (plen = (long) read(fd, pbuf, IGNET_PACKET_SIZE), plen > 0L) {
1942 bytes_to_write = plen;
1943 while (bytes_to_write > 0L) {
1944 /** Exit if shutting down */
1945 if (CtdlThreadCheckStop())
1951 snprintf(buf, sizeof buf, "WRIT %ld", bytes_to_write);
1952 if (sock_puts(sock, buf) < 0) {
1956 if (sock_getln(sock, buf, sizeof buf) < 0) {
1960 thisblock = atol(&buf[4]);
1961 if (buf[0] == '7') {
1962 if (sock_write(sock, pbuf,
1963 (int) thisblock) < 0) {
1967 bytes_to_write -= thisblock;
1968 bytes_written += thisblock;
1977 /** Last chance for shutdown exit */
1978 if(CtdlThreadCheckStop())
1981 if (sock_puts(sock, "UCLS 1") < 0) return;
1983 * From here on we must complete or messages will get lost
1985 if (sock_getln(sock, buf, sizeof buf) < 0) return;
1986 CtdlLogPrintf(CTDL_NOTICE, "Sent %ld octets to <%s>\n",
1987 bytes_written, remote_nodename);
1988 CtdlLogPrintf(CTDL_DEBUG, "<%s\n", buf);
1989 if (buf[0] == '2') {
1990 CtdlLogPrintf(CTDL_DEBUG, "Removing <%s>\n", sfname);
1998 * Poll one Citadel node (called by network_poll_other_citadel_nodes() below)
2000 void network_poll_node(char *node, char *secret, char *host, char *port) {
2004 char connected_to[SIZ];
2007 if (network_talking_to(node, NTT_CHECK)) return;
2008 network_talking_to(node, NTT_ADD);
2009 CtdlLogPrintf(CTDL_DEBUG, "network: polling <%s>\n", node);
2010 CtdlLogPrintf(CTDL_NOTICE, "Connecting to <%s> at %s:%s\n", node, host, port);
2012 sock = sock_connect(host, port, "tcp");
2014 CtdlLogPrintf(CTDL_ERR, "Could not connect: %s\n", strerror(errno));
2015 network_talking_to(node, NTT_REMOVE);
2019 CtdlLogPrintf(CTDL_DEBUG, "Connected!\n");
2020 CCC->sReadBuf = NewStrBuf();
2021 CCC->sMigrateBuf = NewStrBuf();
2024 /* Read the server greeting */
2025 if (sock_getln(&sock, buf, sizeof buf) < 0) goto bail;
2026 CtdlLogPrintf(CTDL_DEBUG, ">%s\n", buf);
2028 /* Check that the remote is who we think it is and warn the Aide if not */
2029 extract_token (connected_to, buf, 1, ' ', sizeof connected_to);
2030 if (strcmp(connected_to, node))
2032 snprintf(err_buf, sizeof(err_buf),
2033 "Connected to node \"%s\" but I was expecting to connect to node \"%s\".",
2036 CtdlLogPrintf(CTDL_ERR, "%s\n", err_buf);
2037 CtdlAideMessage(err_buf, "Network error");
2040 /* We're talking to the correct node. Now identify ourselves. */
2041 snprintf(buf, sizeof buf, "NETP %s|%s", config.c_nodename, secret);
2042 CtdlLogPrintf(CTDL_DEBUG, "<%s\n", buf);
2043 if (sock_puts(&sock, buf) <0) goto bail;
2044 if (sock_getln(&sock, buf, sizeof buf) < 0) goto bail;
2045 CtdlLogPrintf(CTDL_DEBUG, ">%s\n", buf);
2046 if (buf[0] != '2') {
2050 /* At this point we are authenticated. */
2051 if (!CtdlThreadCheckStop())
2052 receive_spool(&sock, node);
2053 if (!CtdlThreadCheckStop())
2054 transmit_spool(&sock, node);
2057 sock_puts(&sock, "QUIT");
2059 FreeStrBuf(&CCC->sReadBuf);
2060 FreeStrBuf(&CCC->sMigrateBuf);
2063 network_talking_to(node, NTT_REMOVE);
2069 * Poll other Citadel nodes and transfer inbound/outbound network data.
2070 * Set "full" to nonzero to force a poll of every node, or to zero to poll
2071 * only nodes to which we have data to send.
2073 void network_poll_other_citadel_nodes(int full_poll) {
2081 char spoolfile[256];
2083 if (working_ignetcfg == NULL) {
2084 CtdlLogPrintf(CTDL_DEBUG, "network: no neighbor nodes are configured - not polling.\n");
2088 /* Use the string tokenizer to grab one line at a time */
2089 for (i=0; i<num_tokens(working_ignetcfg, '\n'); ++i) {
2090 if(CtdlThreadCheckStop())
2092 extract_token(linebuf, working_ignetcfg, i, '\n', sizeof linebuf);
2093 extract_token(node, linebuf, 0, '|', sizeof node);
2094 extract_token(secret, linebuf, 1, '|', sizeof secret);
2095 extract_token(host, linebuf, 2, '|', sizeof host);
2096 extract_token(port, linebuf, 3, '|', sizeof port);
2097 if ( !IsEmptyStr(node) && !IsEmptyStr(secret)
2098 && !IsEmptyStr(host) && !IsEmptyStr(port)) {
2107 if (access(spoolfile, R_OK) == 0) {
2112 network_poll_node(node, secret, host, port);
2123 * It's ok if these directories already exist. Just fail silently.
2125 void create_spool_dirs(void) {
2126 if ((mkdir(ctdl_spool_dir, 0700) != 0) && (errno != EEXIST))
2127 CtdlLogPrintf(CTDL_EMERG, "unable to create directory [%s]: %s", ctdl_spool_dir, strerror(errno));
2128 if (chown(ctdl_spool_dir, CTDLUID, (-1)) != 0)
2129 CtdlLogPrintf(CTDL_EMERG, "unable to set the access rights for [%s]: %s", ctdl_spool_dir, strerror(errno));
2130 if ((mkdir(ctdl_netin_dir, 0700) != 0) && (errno != EEXIST))
2131 CtdlLogPrintf(CTDL_EMERG, "unable to create directory [%s]: %s", ctdl_netin_dir, strerror(errno));
2132 if (chown(ctdl_netin_dir, CTDLUID, (-1)) != 0)
2133 CtdlLogPrintf(CTDL_EMERG, "unable to set the access rights for [%s]: %s", ctdl_netin_dir, strerror(errno));
2134 if ((mkdir(ctdl_nettmp_dir, 0700) != 0) && (errno != EEXIST))
2135 CtdlLogPrintf(CTDL_EMERG, "unable to create directory [%s]: %s", ctdl_nettmp_dir, strerror(errno));
2136 if (chown(ctdl_nettmp_dir, CTDLUID, (-1)) != 0)
2137 CtdlLogPrintf(CTDL_EMERG, "unable to set the access rights for [%s]: %s", ctdl_nettmp_dir, strerror(errno));
2138 if ((mkdir(ctdl_netout_dir, 0700) != 0) && (errno != EEXIST))
2139 CtdlLogPrintf(CTDL_EMERG, "unable to create directory [%s]: %s", ctdl_netout_dir, strerror(errno));
2140 if (chown(ctdl_netout_dir, CTDLUID, (-1)) != 0)
2141 CtdlLogPrintf(CTDL_EMERG, "unable to set the access rights for [%s]: %s", ctdl_netout_dir, strerror(errno));
2149 * network_do_queue()
2151 * Run through the rooms doing various types of network stuff.
2153 void *network_do_queue(void *args) {
2154 static time_t last_run = 0L;
2155 struct RoomProcList *ptr;
2156 int full_processing = 1;
2157 struct CitContext networkerCC;
2159 /* Give the networker its own private CitContext */
2160 CtdlFillSystemContext(&networkerCC, "network");
2161 citthread_setspecific(MyConKey, (void *)&networkerCC );
2164 * Run the full set of processing tasks no more frequently
2165 * than once every n seconds
2167 if ( (time(NULL) - last_run) < config.c_net_freq ) {
2168 full_processing = 0;
2169 CtdlLogPrintf(CTDL_DEBUG, "Network full processing in %ld seconds.\n",
2170 config.c_net_freq - (time(NULL)- last_run)
2175 * This is a simple concurrency check to make sure only one queue run
2176 * is done at a time. We could do this with a mutex, but since we
2177 * don't really require extremely fine granularity here, we'll do it
2178 * with a static variable instead.
2185 /* Load the IGnet Configuration into memory */
2186 load_working_ignetcfg();
2189 * Poll other Citadel nodes. Maybe. If "full_processing" is set
2190 * then we poll everyone. Otherwise we only poll nodes we have stuff
2193 network_poll_other_citadel_nodes(full_processing);
2196 * Load the network map and filter list into memory.
2199 filterlist = load_filter_list();
2202 * Go ahead and run the queue
2204 if (full_processing && !CtdlThreadCheckStop()) {
2205 CtdlLogPrintf(CTDL_DEBUG, "network: loading outbound queue\n");
2206 CtdlForEachRoom(network_queue_room, NULL);
2209 if (rplist != NULL) {
2210 CtdlLogPrintf(CTDL_DEBUG, "network: running outbound queue\n");
2211 while (rplist != NULL && !CtdlThreadCheckStop()) {
2212 char spoolroomname[ROOMNAMELEN];
2213 safestrncpy(spoolroomname, rplist->name, sizeof spoolroomname);
2214 begin_critical_section(S_RPLIST);
2216 /* pop this record off the list */
2218 rplist = rplist->next;
2221 /* invalidate any duplicate entries to prevent double processing */
2222 for (ptr=rplist; ptr!=NULL; ptr=ptr->next) {
2223 if (!strcasecmp(ptr->name, spoolroomname)) {
2228 end_critical_section(S_RPLIST);
2229 if (spoolroomname[0] != 0) {
2230 network_spoolout_room(spoolroomname);
2235 /* If there is anything in the inbound queue, process it */
2236 if (!CtdlThreadCheckStop()) {
2237 network_do_spoolin();
2240 /* Save the network map back to disk */
2241 write_network_map();
2243 /* Free the filter list in memory */
2244 free_filter_list(filterlist);
2247 network_purge_spoolout();
2249 CtdlLogPrintf(CTDL_DEBUG, "network: queue run completed\n");
2251 if (full_processing) {
2252 last_run = time(NULL);
2257 /* Reschedule this task to happen again periodically, unless the thread system indicates
2258 * that the server is shutting down.
2260 if (!CtdlThreadCheckStop()) {
2261 CtdlThreadSchedule("IGnet Network", CTDLTHREAD_BIGSTACK,
2262 network_do_queue, NULL, time(NULL) + 60
2266 CtdlLogPrintf(CTDL_DEBUG, "network: Task STOPPED.\n");
2273 * cmd_netp() - authenticate to the server as another Citadel node polling
2274 * for network traffic
2276 void cmd_netp(char *cmdbuf)
2287 extract_token(node, cmdbuf, 0, '|', sizeof node);
2288 extract_token(pass, cmdbuf, 1, '|', sizeof pass);
2291 CtdlLogPrintf(CTDL_WARNING, "Network node <%s> refused - spooling\n", node);
2292 cprintf("%d spooling - try again in a few minutes\n", ERROR + RESOURCE_BUSY);
2296 /* load the IGnet Configuration to check node validity */
2297 load_working_ignetcfg();
2298 v = is_valid_node(nexthop, secret, node);
2301 snprintf(err_buf, sizeof err_buf,
2302 "An unknown Citadel server called \"%s\" attempted to connect from %s [%s].\n",
2303 node, CC->cs_host, CC->cs_addr
2305 CtdlLogPrintf(CTDL_WARNING, err_buf);
2306 cprintf("%d authentication failed\n", ERROR + PASSWORD_REQUIRED);
2307 CtdlAideMessage(err_buf, "IGNet Networking.");
2311 if (strcasecmp(pass, secret)) {
2312 snprintf(err_buf, sizeof err_buf,
2313 "A Citadel server at %s [%s] failed to authenticate as network node \"%s\".\n",
2314 CC->cs_host, CC->cs_addr, node
2316 CtdlLogPrintf(CTDL_WARNING, err_buf);
2317 cprintf("%d authentication failed\n", ERROR + PASSWORD_REQUIRED);
2318 CtdlAideMessage(err_buf, "IGNet Networking.");
2322 if (network_talking_to(node, NTT_CHECK)) {
2323 CtdlLogPrintf(CTDL_WARNING, "Duplicate session for network node <%s>", node);
2324 cprintf("%d Already talking to %s right now\n", ERROR + RESOURCE_BUSY, node);
2328 safestrncpy(CC->net_node, node, sizeof CC->net_node);
2329 network_talking_to(node, NTT_ADD);
2330 CtdlLogPrintf(CTDL_NOTICE, "Network node <%s> logged in from %s [%s]\n",
2331 CC->net_node, CC->cs_host, CC->cs_addr
2333 cprintf("%d authenticated as network node '%s'\n", CIT_OK, CC->net_node);
2337 int network_room_handler (struct ctdlroom *room)
2339 network_queue_room(room, NULL);
2345 * Module entry point
2347 CTDL_MODULE_INIT(network)
2351 create_spool_dirs();
2352 CtdlRegisterProtoHook(cmd_gnet, "GNET", "Get network config");
2353 CtdlRegisterProtoHook(cmd_snet, "SNET", "Set network config");
2354 CtdlRegisterProtoHook(cmd_netp, "NETP", "Identify as network poller");
2355 CtdlRegisterProtoHook(cmd_nsyn, "NSYN", "Synchronize room to node");
2356 CtdlRegisterRoomHook(network_room_handler);
2357 CtdlRegisterCleanupHook(destroy_network_queue_room);
2360 CtdlThreadSchedule("IGnet Network", CTDLTHREAD_BIGSTACK, network_do_queue, NULL, 0);
2361 /* return our Subversion id for the Log */