#endif
#include "context.h"
-
+#include "netconfig.h"
+#include "netmail.h"
#include "ctdl_module.h"
*/
struct RoomProcList *rplist = NULL;
-/*
- * We build a map of network nodes during processing.
- */
-NetMap *the_netmap = NULL;
-int netmap_changed = 0;
-char *working_ignetcfg = NULL;
-
-/*
- * Load or refresh the Citadel network (IGnet) configuration for this node.
- */
-void load_working_ignetcfg(void) {
- char *cfg;
- char *oldcfg;
-
- cfg = CtdlGetSysConfig(IGNETCFG);
- if (cfg == NULL) {
- cfg = strdup("");
- }
-
- oldcfg = working_ignetcfg;
- working_ignetcfg = cfg;
- if (oldcfg != NULL) {
- free(oldcfg);
- }
-}
-
-
-
-
-
-/*
- * Keep track of what messages to reject
- */
-FilterList *load_filter_list(void) {
- char *serialized_list = NULL;
- int i;
- char buf[SIZ];
- FilterList *newlist = NULL;
- FilterList *nptr;
-
- serialized_list = CtdlGetSysConfig(FILTERLIST);
- if (serialized_list == NULL) return(NULL); /* if null, no entries */
-
- /* Use the string tokenizer to grab one line at a time */
- for (i=0; i<num_tokens(serialized_list, '\n'); ++i) {
- extract_token(buf, serialized_list, i, '\n', sizeof buf);
- nptr = (FilterList *) malloc(sizeof(FilterList));
- extract_token(nptr->fl_user, buf, 0, '|', sizeof nptr->fl_user);
- striplt(nptr->fl_user);
- extract_token(nptr->fl_room, buf, 1, '|', sizeof nptr->fl_room);
- striplt(nptr->fl_room);
- extract_token(nptr->fl_node, buf, 2, '|', sizeof nptr->fl_node);
- striplt(nptr->fl_node);
-
- /* Cowardly refuse to add an any/any/any entry that would
- * end up filtering every single message.
- */
- if (IsEmptyStr(nptr->fl_user) &&
- IsEmptyStr(nptr->fl_room) &&
- IsEmptyStr(nptr->fl_node)) {
- free(nptr);
- }
- else {
- nptr->next = newlist;
- newlist = nptr;
- }
- }
- free(serialized_list);
- return newlist;
-}
-void free_filter_list(FilterList *fl) {
- if (fl == NULL) return;
- free_filter_list(fl->next);
- free(fl);
-}
}
-/*
- * Read the network map from its configuration file into memory.
- */
-void read_network_map(void) {
- char *serialized_map = NULL;
- int i;
- char buf[SIZ];
- NetMap *nmptr;
-
- serialized_map = CtdlGetSysConfig(IGNETMAP);
- if (serialized_map == NULL) return; /* if null, no entries */
-
- /* Use the string tokenizer to grab one line at a time */
- for (i=0; i<num_tokens(serialized_map, '\n'); ++i) {
- extract_token(buf, serialized_map, i, '\n', sizeof buf);
- nmptr = (NetMap *) malloc(sizeof(NetMap));
- extract_token(nmptr->nodename, buf, 0, '|', sizeof nmptr->nodename);
- nmptr->lastcontact = extract_long(buf, 1);
- extract_token(nmptr->nexthop, buf, 2, '|', sizeof nmptr->nexthop);
- nmptr->next = the_netmap;
- the_netmap = nmptr;
- }
-
- free(serialized_map);
- netmap_changed = 0;
-}
-
-
-/*
- * Write the network map from memory back to the configuration file.
- */
-void write_network_map(void) {
- char *serialized_map = NULL;
- NetMap *nmptr;
-
-
- if (netmap_changed) {
- serialized_map = strdup("");
-
- if (the_netmap != NULL) {
- for (nmptr = the_netmap; nmptr != NULL; nmptr = nmptr->next) {
- serialized_map = realloc(serialized_map,
- (strlen(serialized_map)+SIZ) );
- if (!IsEmptyStr(nmptr->nodename)) {
- snprintf(&serialized_map[strlen(serialized_map)],
- SIZ,
- "%s|%ld|%s\n",
- nmptr->nodename,
- (long)nmptr->lastcontact,
- nmptr->nexthop);
- }
- }
- }
-
- CtdlPutSysConfig(IGNETMAP, serialized_map);
- free(serialized_map);
- }
-
- /* Now free the list */
- while (the_netmap != NULL) {
- nmptr = the_netmap->next;
- free(the_netmap);
- the_netmap = nmptr;
- }
- netmap_changed = 0;
-}
-
-
-
-/*
- * Check the network map and determine whether the supplied node name is
- * valid. If it is not a neighbor node, supply the name of a neighbor node
- * which is the next hop. If it *is* a neighbor node, we also fill in the
- * shared secret.
- */
-int is_valid_node(char *nexthop, char *secret, char *node) {
- int i;
- char linebuf[SIZ];
- char buf[SIZ];
- int retval;
- NetMap *nmptr;
-
- if (node == NULL) {
- return(-1);
- }
-
- /*
- * First try the neighbor nodes
- */
- if (working_ignetcfg == NULL) {
- syslog(LOG_ERR, "working_ignetcfg is NULL!\n");
- if (nexthop != NULL) {
- strcpy(nexthop, "");
- }
- return(-1);
- }
-
- retval = (-1);
- if (nexthop != NULL) {
- strcpy(nexthop, "");
- }
-
- /* Use the string tokenizer to grab one line at a time */
- for (i=0; i<num_tokens(working_ignetcfg, '\n'); ++i) {
- extract_token(linebuf, working_ignetcfg, i, '\n', sizeof linebuf);
- extract_token(buf, linebuf, 0, '|', sizeof buf);
- if (!strcasecmp(buf, node)) {
- if (nexthop != NULL) {
- strcpy(nexthop, "");
- }
- if (secret != NULL) {
- extract_token(secret, linebuf, 1, '|', 256);
- }
- retval = 0;
- }
- }
-
- if (retval == 0) {
- return(retval); /* yup, it's a direct neighbor */
- }
-
- /*
- * If we get to this point we have to see if we know the next hop
- */
- if (the_netmap != NULL) {
- for (nmptr = the_netmap; nmptr != NULL; nmptr = nmptr->next) {
- if (!strcasecmp(nmptr->nodename, node)) {
- if (nexthop != NULL) {
- strcpy(nexthop, nmptr->nexthop);
- }
- return(0);
- }
- }
- }
-
- /*
- * If we get to this point, the supplied node name is bogus.
- */
- syslog(LOG_ERR, "Invalid node name <%s>\n", node);
- return(-1);
-}
-
-
-
-
-
-void cmd_gnet(char *argbuf) {
- char filename[PATH_MAX];
- char buf[SIZ];
- FILE *fp;
-
- if ( (CC->room.QRflags & QR_MAILBOX) && (CC->user.usernum == atol(CC->room.QRname)) ) {
- /* users can edit the netconfigs for their own mailbox rooms */
- }
- else if (CtdlAccessCheck(ac_room_aide)) return;
-
- assoc_file_name(filename, sizeof filename, &CC->room, ctdl_netcfg_dir);
- cprintf("%d Network settings for room #%ld <%s>\n",
- LISTING_FOLLOWS,
- CC->room.QRnumber, CC->room.QRname);
-
- fp = fopen(filename, "r");
- if (fp != NULL) {
- while (fgets(buf, sizeof buf, fp) != NULL) {
- buf[strlen(buf)-1] = 0;
- cprintf("%s\n", buf);
- }
- fclose(fp);
- }
-
- cprintf("000\n");
-}
-
-
-void cmd_snet(char *argbuf) {
- char tempfilename[PATH_MAX];
- char filename[PATH_MAX];
- int TmpFD;
- StrBuf *Line;
- struct stat StatBuf;
- long len;
- int rc;
-
- unbuffer_output();
-
- if ( (CC->room.QRflags & QR_MAILBOX) && (CC->user.usernum == atol(CC->room.QRname)) ) {
- /* users can edit the netconfigs for their own mailbox rooms */
- }
- else if (CtdlAccessCheck(ac_room_aide)) return;
-
- len = assoc_file_name(filename, sizeof filename, &CC->room, ctdl_netcfg_dir);
- memcpy(tempfilename, filename, len + 1);
-
- memset(&StatBuf, 0, sizeof(struct stat));
- if ((stat(filename, &StatBuf) == -1) || (StatBuf.st_size == 0))
- StatBuf.st_size = 80; /* Not there or empty? guess 80 chars line. */
-
- sprintf(tempfilename + len, ".%d", CC->cs_pid);
- errno = 0;
- TmpFD = open(tempfilename, O_CREAT|O_EXCL|O_RDWR, S_IRUSR|S_IWUSR);
-
- if ((TmpFD > 0) && (errno == 0))
- {
- char *tmp = malloc(StatBuf.st_size * 2);
- memset(tmp, ' ', StatBuf.st_size * 2);
- rc = write(TmpFD, tmp, StatBuf.st_size * 2);
- free(tmp);
- if ((rc <= 0) || (rc != StatBuf.st_size * 2))
- {
- close(TmpFD);
- cprintf("%d Unable to allocate the space required for %s: %s\n",
- ERROR + INTERNAL_ERROR,
- tempfilename,
- strerror(errno));
- unlink(tempfilename);
- return;
- }
- lseek(TmpFD, SEEK_SET, 0);
- }
- else {
- cprintf("%d Unable to allocate the space required for %s: %s\n",
- ERROR + INTERNAL_ERROR,
- tempfilename,
- strerror(errno));
- unlink(tempfilename);
- return;
- }
- Line = NewStrBuf();
-
- cprintf("%d %s\n", SEND_LISTING, tempfilename);
-
- len = 0;
- while (rc = CtdlClientGetLine(Line),
- (rc >= 0))
- {
- if ((rc == 3) && (strcmp(ChrPtr(Line), "000") == 0))
- break;
- StrBufAppendBufPlain(Line, HKEY("\n"), 0);
- write(TmpFD, ChrPtr(Line), StrLength(Line));
- len += StrLength(Line);
- }
- FreeStrBuf(&Line);
- ftruncate(TmpFD, len);
- close(TmpFD);
-
- /* Now copy the temp file to its permanent location.
- * (We copy instead of link because they may be on different filesystems)
- */
- begin_critical_section(S_NETCONFIGS);
- rename(tempfilename, filename);
- end_critical_section(S_NETCONFIGS);
-}
-
-
-/*
- * Deliver digest messages
- */
-void network_deliver_digest(SpoolControl *sc) {
- char buf[SIZ];
- int i;
- struct CtdlMessage *msg = NULL;
- long msglen;
- char *recps = NULL;
- size_t recps_len = SIZ;
- struct recptypes *valid;
- namelist *nptr;
- char bounce_to[256];
-
- if (sc->num_msgs_spooled < 1) {
- fclose(sc->digestfp);
- sc->digestfp = NULL;
- return;
- }
-
- msg = malloc(sizeof(struct CtdlMessage));
- memset(msg, 0, sizeof(struct CtdlMessage));
- msg->cm_magic = CTDLMESSAGE_MAGIC;
- msg->cm_format_type = FMT_RFC822;
- msg->cm_anon_type = MES_NORMAL;
-
- sprintf(buf, "%ld", time(NULL));
- msg->cm_fields['T'] = strdup(buf);
- msg->cm_fields['A'] = strdup(CC->room.QRname);
- snprintf(buf, sizeof buf, "[%s]", CC->room.QRname);
- msg->cm_fields['U'] = strdup(buf);
- sprintf(buf, "room_%s@%s", CC->room.QRname, config.c_fqdn);
- for (i=0; buf[i]; ++i) {
- if (isspace(buf[i])) buf[i]='_';
- buf[i] = tolower(buf[i]);
- }
- msg->cm_fields['F'] = strdup(buf);
- msg->cm_fields['R'] = strdup(buf);
-
- /* Set the 'List-ID' header */
- msg->cm_fields['L'] = malloc(1024);
- snprintf(msg->cm_fields['L'], 1024,
- "%s <%ld.list-id.%s>",
- CC->room.QRname,
- CC->room.QRnumber,
- config.c_fqdn
- );
-
- /*
- * Go fetch the contents of the digest
- */
- fseek(sc->digestfp, 0L, SEEK_END);
- msglen = ftell(sc->digestfp);
-
- msg->cm_fields['M'] = malloc(msglen + 1);
- fseek(sc->digestfp, 0L, SEEK_SET);
- fread(msg->cm_fields['M'], (size_t)msglen, 1, sc->digestfp);
- msg->cm_fields['M'][msglen] = '\0';
-
- fclose(sc->digestfp);
- sc->digestfp = NULL;
-
- /* Now generate the delivery instructions */
-
- /*
- * Figure out how big a buffer we need to allocate
- */
- for (nptr = sc->digestrecps; nptr != NULL; nptr = nptr->next) {
- recps_len = recps_len + strlen(nptr->name) + 2;
- }
-
- recps = malloc(recps_len);
-
- if (recps == NULL) {
- syslog(LOG_EMERG, "Cannot allocate %ld bytes for recps...\n", (long)recps_len);
- abort();
- }
-
- strcpy(recps, "");
-
- /* Each recipient */
- for (nptr = sc->digestrecps; nptr != NULL; nptr = nptr->next) {
- if (nptr != sc->digestrecps) {
- strcat(recps, ",");
- }
- strcat(recps, nptr->name);
- }
-
- /* Where do we want bounces and other noise to be heard? Surely not the list members! */
- snprintf(bounce_to, sizeof bounce_to, "room_aide@%s", config.c_fqdn);
-
- /* Now submit the message */
- valid = validate_recipients(recps, NULL, 0);
- free(recps);
- if (valid != NULL) {
- valid->bounce_to = strdup(bounce_to);
- valid->envelope_from = strdup(bounce_to);
- CtdlSubmitMsg(msg, valid, NULL, 0);
- }
- CtdlFreeMessage(msg);
- free_recipients(valid);
-}
-
-
-/*
- * Deliver list messages to everyone on the list ... efficiently
- */
-void network_deliver_list(struct CtdlMessage *msg, SpoolControl *sc) {
- char *recps = NULL;
- size_t recps_len = SIZ;
- struct recptypes *valid;
- namelist *nptr;
- char bounce_to[256];
-
- /* Don't do this if there were no recipients! */
- if (sc->listrecps == NULL) return;
-
- /* Now generate the delivery instructions */
-
- /*
- * Figure out how big a buffer we need to allocate
- */
- for (nptr = sc->listrecps; nptr != NULL; nptr = nptr->next) {
- recps_len = recps_len + strlen(nptr->name) + 2;
- }
-
- recps = malloc(recps_len);
-
- if (recps == NULL) {
- syslog(LOG_EMERG, "Cannot allocate %ld bytes for recps...\n", (long)recps_len);
- abort();
- }
-
- strcpy(recps, "");
-
- /* Each recipient */
- for (nptr = sc->listrecps; nptr != NULL; nptr = nptr->next) {
- if (nptr != sc->listrecps) {
- strcat(recps, ",");
- }
- strcat(recps, nptr->name);
- }
-
- /* Where do we want bounces and other noise to be heard? Surely not the list members! */
- snprintf(bounce_to, sizeof bounce_to, "room_aide@%s", config.c_fqdn);
-
- /* Now submit the message */
- valid = validate_recipients(recps, NULL, 0);
- free(recps);
- if (valid != NULL) {
- valid->bounce_to = strdup(bounce_to);
- valid->envelope_from = strdup(bounce_to);
- CtdlSubmitMsg(msg, valid, NULL, 0);
- free_recipients(valid);
- }
- /* Do not call CtdlFreeMessage(msg) here; the caller will free it. */
-}
-
-
-
-
-/*
- * Spools out one message from the list.
- */
-void network_spool_msg(long msgnum, void *userdata) {
- SpoolControl *sc;
- int i;
- char *newpath = NULL;
- struct CtdlMessage *msg = NULL;
- namelist *nptr;
- maplist *mptr;
- struct ser_ret sermsg;
- FILE *fp;
- char filename[PATH_MAX];
- char buf[SIZ];
- int bang = 0;
- int send = 1;
- int delete_after_send = 0; /* Set to 1 to delete after spooling */
- int ok_to_participate = 0;
- struct recptypes *valid;
-
- sc = (SpoolControl *)userdata;
-
- /*
- * Process mailing list recipients
- */
- if (sc->listrecps != NULL) {
- /* Fetch the message. We're going to need to modify it
- * in order to insert the [list name] in it, etc.
- */
- msg = CtdlFetchMessage(msgnum, 1);
- if (msg != NULL) {
- int rlen;
- char *pCh;
- StrBuf *Subject, *FlatSubject;
-
- if (msg->cm_fields['V'] == NULL){
- /* local message, no enVelope */
- StrBuf *Buf;
- Buf = NewStrBuf();
- StrBufAppendBufPlain(Buf, msg->cm_fields['O'], -1, 0);
- StrBufAppendBufPlain(Buf, HKEY("@"), 0);
- StrBufAppendBufPlain(Buf, config.c_fqdn, -1, 0);
-
- msg->cm_fields['K'] = SmashStrBuf(&Buf);
- }
- else {
- msg->cm_fields['K'] = strdup (msg->cm_fields['V']);
- }
- /* Set the 'List-ID' header */
- if (msg->cm_fields['L'] != NULL) {
- free(msg->cm_fields['L']);
- }
- msg->cm_fields['L'] = malloc(1024);
- snprintf(msg->cm_fields['L'], 1024,
- "%s <%ld.list-id.%s>",
- CC->room.QRname,
- CC->room.QRnumber,
- config.c_fqdn
- );
-
- /* Prepend "[List name]" to the subject */
- if (msg->cm_fields['U'] == NULL) {
- Subject = NewStrBufPlain(HKEY("(no subject)"));
- }
- else {
- Subject = NewStrBufPlain(msg->cm_fields['U'], -1);
- }
- FlatSubject = NewStrBufPlain(NULL, StrLength(Subject));
- StrBuf_RFC822_to_Utf8(FlatSubject, Subject, NULL, NULL);
-
- rlen = strlen(CC->room.QRname);
- pCh = strstr(ChrPtr(FlatSubject), CC->room.QRname);
- if ((pCh == NULL) ||
- (*(pCh + rlen) != ']') ||
- (pCh == ChrPtr(FlatSubject)) ||
- (*(pCh - 1) != '[')
- )
- {
- StrBuf *tmp;
- StrBufPlain(Subject, HKEY("["));
- StrBufAppendBufPlain(Subject, CC->room.QRname, rlen, 0);
- StrBufAppendBufPlain(Subject, HKEY("] "), 0);
- StrBufAppendBuf(Subject, FlatSubject, 0);
- tmp = Subject; Subject = FlatSubject; FlatSubject = tmp; /* so we can free the right one... */
- StrBufRFC2047encode(&Subject, FlatSubject);
- }
-
- if (msg->cm_fields['U'] != NULL)
- free (msg->cm_fields['U']);
- msg->cm_fields['U'] = SmashStrBuf(&Subject);
-
- FreeStrBuf(&FlatSubject);
-
- /* else we won't modify the buffer, since the roomname is already here. */
-
- /* Set the recipient of the list message to the
- * email address of the room itself.
- * FIXME ... I want to be able to pick any address
- */
- if (msg->cm_fields['R'] != NULL) {
- free(msg->cm_fields['R']);
- }
- msg->cm_fields['R'] = malloc(256);
- snprintf(msg->cm_fields['R'], 256,
- "room_%s@%s", CC->room.QRname,
- config.c_fqdn);
- for (i=0; msg->cm_fields['R'][i]; ++i) {
- if (isspace(msg->cm_fields['R'][i])) {
- msg->cm_fields['R'][i] = '_';
- }
- }
-
- /* Handle delivery */
- network_deliver_list(msg, sc);
- CtdlFreeMessage(msg);
- }
- }
-
- /*
- * Process digest recipients
- */
- if ((sc->digestrecps != NULL) && (sc->digestfp != NULL)) {
- msg = CtdlFetchMessage(msgnum, 1);
- if (msg != NULL) {
- fprintf(sc->digestfp, " -----------------------------------"
- "------------------------------------"
- "-------\n");
- fprintf(sc->digestfp, "From: ");
- if (msg->cm_fields['A'] != NULL) {
- fprintf(sc->digestfp, "%s ", msg->cm_fields['A']);
- }
- if (msg->cm_fields['F'] != NULL) {
- fprintf(sc->digestfp, "<%s> ", msg->cm_fields['F']);
- }
- else if (msg->cm_fields['N'] != NULL) {
- fprintf(sc->digestfp, "@%s ", msg->cm_fields['N']);
- }
- fprintf(sc->digestfp, "\n");
- if (msg->cm_fields['U'] != NULL) {
- fprintf(sc->digestfp, "Subject: %s\n", msg->cm_fields['U']);
- }
-
- CC->redirect_buffer = NewStrBufPlain(NULL, SIZ);
-
- safestrncpy(CC->preferred_formats, "text/plain", sizeof CC->preferred_formats);
- CtdlOutputPreLoadedMsg(msg, MT_CITADEL, HEADERS_NONE, 0, 0, 0);
-
- StrBufTrim(CC->redirect_buffer);
- fwrite(HKEY("\n"), 1, sc->digestfp);
- fwrite(SKEY(CC->redirect_buffer), 1, sc->digestfp);
- fwrite(HKEY("\n"), 1, sc->digestfp);
-
- FreeStrBuf(&CC->redirect_buffer);
-
- sc->num_msgs_spooled += 1;
- free(msg);
- }
- }
-
- /*
- * Process client-side list participations for this room
- */
- if (sc->participates != NULL) {
- msg = CtdlFetchMessage(msgnum, 1);
- if (msg != NULL) {
-
- /* Only send messages which originated on our own Citadel
- * network, otherwise we'll end up sending the remote
- * mailing list's messages back to it, which is rude...
- */
- ok_to_participate = 0;
- if (msg->cm_fields['N'] != NULL) {
- if (!strcasecmp(msg->cm_fields['N'], config.c_nodename)) {
- ok_to_participate = 1;
- }
- if (is_valid_node(NULL, NULL, msg->cm_fields['N']) == 0) {
- ok_to_participate = 1;
- }
- }
- if (ok_to_participate) {
- if (msg->cm_fields['F'] != NULL) {
- free(msg->cm_fields['F']);
- }
- msg->cm_fields['F'] = malloc(SIZ);
- /* Replace the Internet email address of the actual
- * author with the email address of the room itself,
- * so the remote listserv doesn't reject us.
- * FIXME ... I want to be able to pick any address
- */
- snprintf(msg->cm_fields['F'], SIZ,
- "room_%s@%s", CC->room.QRname,
- config.c_fqdn);
- for (i=0; msg->cm_fields['F'][i]; ++i) {
- if (isspace(msg->cm_fields['F'][i])) {
- msg->cm_fields['F'][i] = '_';
- }
- }
-
- /*
- * Figure out how big a buffer we need to allocate
- */
- for (nptr = sc->participates; nptr != NULL; nptr = nptr->next) {
-
- if (msg->cm_fields['R'] == NULL) {
- free(msg->cm_fields['R']);
- }
- msg->cm_fields['R'] = strdup(nptr->name);
-
- valid = validate_recipients(nptr->name, NULL, 0);
- CtdlSubmitMsg(msg, valid, "", 0);
- free_recipients(valid);
- }
-
- }
- CtdlFreeMessage(msg);
- }
- }
-
- /*
- * Process IGnet push shares
- */
- msg = CtdlFetchMessage(msgnum, 1);
- if (msg != NULL) {
- size_t newpath_len;
-
- /* Prepend our node name to the Path field whenever
- * sending a message to another IGnet node
- */
- if (msg->cm_fields['P'] == NULL) {
- msg->cm_fields['P'] = strdup("username");
- }
- newpath_len = strlen(msg->cm_fields['P']) +
- strlen(config.c_nodename) + 2;
- newpath = malloc(newpath_len);
- snprintf(newpath, newpath_len, "%s!%s",
- config.c_nodename, msg->cm_fields['P']);
- free(msg->cm_fields['P']);
- msg->cm_fields['P'] = newpath;
-
- /*
- * Determine if this message is set to be deleted
- * after sending out on the network
- */
- if (msg->cm_fields['S'] != NULL) {
- if (!strcasecmp(msg->cm_fields['S'], "CANCEL")) {
- delete_after_send = 1;
- }
- }
-
- /* Now send it to every node */
- if (sc->ignet_push_shares != NULL)
- for (mptr = sc->ignet_push_shares; mptr != NULL;
- mptr = mptr->next) {
-
- send = 1;
-
- /* Check for valid node name */
- if (is_valid_node(NULL, NULL, mptr->remote_nodename) != 0) {
- syslog(LOG_ERR, "Invalid node <%s>\n", mptr->remote_nodename);
- send = 0;
- }
-
- /* Check for split horizon */
- syslog(LOG_DEBUG, "Path is %s\n", msg->cm_fields['P']);
- bang = num_tokens(msg->cm_fields['P'], '!');
- if (bang > 1) for (i=0; i<(bang-1); ++i) {
- extract_token(buf, msg->cm_fields['P'], i, '!', sizeof buf);
- syslog(LOG_DEBUG, "Compare <%s> to <%s>\n",
- buf, mptr->remote_nodename) ;
- if (!strcasecmp(buf, mptr->remote_nodename)) {
- send = 0;
- syslog(LOG_DEBUG, "Not sending to %s\n",
- mptr->remote_nodename);
- }
- else {
- syslog(LOG_DEBUG, "Sending to %s\n", mptr->remote_nodename);
- }
- }
-
- /* Send the message */
- if (send == 1) {
-
- /*
- * Force the message to appear in the correct room
- * on the far end by setting the C field correctly
- */
- if (msg->cm_fields['C'] != NULL) {
- free(msg->cm_fields['C']);
- }
- if (!IsEmptyStr(mptr->remote_roomname)) {
- msg->cm_fields['C'] = strdup(mptr->remote_roomname);
- }
- else {
- msg->cm_fields['C'] = strdup(CC->room.QRname);
- }
-
- /* serialize it for transmission */
- serialize_message(&sermsg, msg);
- if (sermsg.len > 0) {
-
- /* write it to a spool file */
- snprintf(filename, sizeof filename,"%s/%s@%lx%x",
- ctdl_netout_dir,
- mptr->remote_nodename,
- time(NULL),
- rand()
- );
- syslog(LOG_DEBUG, "Appending to %s\n", filename);
- fp = fopen(filename, "ab");
- if (fp != NULL) {
- fwrite(sermsg.ser,
- sermsg.len, 1, fp);
- fclose(fp);
- }
- else {
- syslog(LOG_ERR, "%s: %s\n", filename, strerror(errno));
- }
-
- /* free the serialized version */
- free(sermsg.ser);
- }
-
- }
- }
- CtdlFreeMessage(msg);
- }
-
- /* update lastsent */
- sc->lastsent = msgnum;
-
- /* Delete this message if delete-after-send is set */
- if (delete_after_send) {
- CtdlDeleteMessages(CC->room.QRname, &msgnum, 1, "");
- }
-
-}
-
-
-int read_spoolcontrol_file(SpoolControl **scc, char *filename)
-{
- FILE *fp;
- char instr[SIZ];
- char buf[SIZ];
- char nodename[256];
- char roomname[ROOMNAMELEN];
- size_t miscsize = 0;
- size_t linesize = 0;
- int skipthisline = 0;
- namelist *nptr = NULL;
- maplist *mptr = NULL;
- SpoolControl *sc;
-
- fp = fopen(filename, "r");
- if (fp == NULL) {
- return 0;
- }
- sc = malloc(sizeof(SpoolControl));
- memset(sc, 0, sizeof(SpoolControl));
- *scc = sc;
-
- while (fgets(buf, sizeof buf, fp) != NULL) {
- buf[strlen(buf)-1] = 0;
-
- extract_token(instr, buf, 0, '|', sizeof instr);
- if (!strcasecmp(instr, strof(lastsent))) {
- sc->lastsent = extract_long(buf, 1);
- }
- else if (!strcasecmp(instr, strof(listrecp))) {
- nptr = (namelist *)
- malloc(sizeof(namelist));
- nptr->next = sc->listrecps;
- extract_token(nptr->name, buf, 1, '|', sizeof nptr->name);
- sc->listrecps = nptr;
- }
- else if (!strcasecmp(instr, strof(participate))) {
- nptr = (namelist *)
- malloc(sizeof(namelist));
- nptr->next = sc->participates;
- extract_token(nptr->name, buf, 1, '|', sizeof nptr->name);
- sc->participates = nptr;
- }
- else if (!strcasecmp(instr, strof(digestrecp))) {
- nptr = (namelist *)
- malloc(sizeof(namelist));
- nptr->next = sc->digestrecps;
- extract_token(nptr->name, buf, 1, '|', sizeof nptr->name);
- sc->digestrecps = nptr;
- }
- else if (!strcasecmp(instr, strof(ignet_push_share))) {
- extract_token(nodename, buf, 1, '|', sizeof nodename);
- extract_token(roomname, buf, 2, '|', sizeof roomname);
- mptr = (maplist *) malloc(sizeof(maplist));
- mptr->next = sc->ignet_push_shares;
- strcpy(mptr->remote_nodename, nodename);
- strcpy(mptr->remote_roomname, roomname);
- sc->ignet_push_shares = mptr;
- }
- else {
- /* Preserve 'other' lines ... *unless* they happen to
- * be subscribe/unsubscribe pendings with expired
- * timestamps.
- */
- skipthisline = 0;
- if (!strncasecmp(buf, strof(subpending)"|", 11)) {
- if (time(NULL) - extract_long(buf, 4) > EXP) {
- skipthisline = 1;
- }
- }
- if (!strncasecmp(buf, strof(unsubpending)"|", 13)) {
- if (time(NULL) - extract_long(buf, 3) > EXP) {
- skipthisline = 1;
- }
- }
-
- if (skipthisline == 0) {
- linesize = strlen(buf);
- sc->misc = realloc(sc->misc,
- (miscsize + linesize + 2) );
- sprintf(&sc->misc[miscsize], "%s\n", buf);
- miscsize = miscsize + linesize + 1;
- }
- }
-
-
- }
- fclose(fp);
- return 1;
-}
-
-void free_spoolcontrol_struct(SpoolControl **scc)
-{
- SpoolControl *sc;
- namelist *nptr = NULL;
- maplist *mptr = NULL;
-
- sc = *scc;
- while (sc->listrecps != NULL) {
- nptr = sc->listrecps->next;
- free(sc->listrecps);
- sc->listrecps = nptr;
- }
- /* Do the same for digestrecps */
- while (sc->digestrecps != NULL) {
- nptr = sc->digestrecps->next;
- free(sc->digestrecps);
- sc->digestrecps = nptr;
- }
- /* Do the same for participates */
- while (sc->participates != NULL) {
- nptr = sc->participates->next;
- free(sc->participates);
- sc->participates = nptr;
- }
- while (sc->ignet_push_shares != NULL) {
- mptr = sc->ignet_push_shares->next;
- free(sc->ignet_push_shares);
- sc->ignet_push_shares = mptr;
- }
- free(sc->misc);
- free(sc);
- *scc=NULL;
-}
-
-int writenfree_spoolcontrol_file(SpoolControl **scc, char *filename)
-{
- char tempfilename[PATH_MAX];
- int TmpFD;
- SpoolControl *sc;
- namelist *nptr = NULL;
- maplist *mptr = NULL;
- long len;
- time_t unixtime;
- struct timeval tv;
- long reltid; /* if we don't have SYS_gettid, use "random" value */
- StrBuf *Cfg;
- int rc;
-
- len = strlen(filename);
- memcpy(tempfilename, filename, len + 1);
-
-
-#if defined(HAVE_SYSCALL_H) && defined (SYS_gettid)
- reltid = syscall(SYS_gettid);
-#endif
- gettimeofday(&tv, NULL);
- /* Promote to time_t; types differ on some OSes (like darwin) */
- unixtime = tv.tv_sec;
-
- sprintf(tempfilename + len, ".%ld-%ld", reltid, unixtime);
- sc = *scc;
- errno = 0;
- TmpFD = open(tempfilename, O_CREAT|O_EXCL|O_RDWR, S_IRUSR|S_IWUSR);
- Cfg = NewStrBuf();
- if ((TmpFD < 0) || (errno != 0)) {
- syslog(LOG_CRIT, "ERROR: cannot open %s: %s\n",
- filename, strerror(errno));
- free_spoolcontrol_struct(scc);
- unlink(tempfilename);
- }
- else {
- fchown(TmpFD, config.c_ctdluid, 0);
- StrBufAppendPrintf(Cfg, "lastsent|%ld\n", sc->lastsent);
-
- /* Write out the listrecps while freeing from memory at the
- * same time. Am I clever or what? :)
- */
- while (sc->listrecps != NULL) {
- StrBufAppendPrintf(Cfg, "listrecp|%s\n", sc->listrecps->name);
- nptr = sc->listrecps->next;
- free(sc->listrecps);
- sc->listrecps = nptr;
- }
- /* Do the same for digestrecps */
- while (sc->digestrecps != NULL) {
- StrBufAppendPrintf(Cfg, "digestrecp|%s\n", sc->digestrecps->name);
- nptr = sc->digestrecps->next;
- free(sc->digestrecps);
- sc->digestrecps = nptr;
- }
- /* Do the same for participates */
- while (sc->participates != NULL) {
- StrBufAppendPrintf(Cfg, "participate|%s\n", sc->participates->name);
- nptr = sc->participates->next;
- free(sc->participates);
- sc->participates = nptr;
- }
- while (sc->ignet_push_shares != NULL) {
- StrBufAppendPrintf(Cfg, "ignet_push_share|%s", sc->ignet_push_shares->remote_nodename);
- if (!IsEmptyStr(sc->ignet_push_shares->remote_roomname)) {
- StrBufAppendPrintf(Cfg, "|%s", sc->ignet_push_shares->remote_roomname);
- }
- StrBufAppendPrintf(Cfg, "\n");
- mptr = sc->ignet_push_shares->next;
- free(sc->ignet_push_shares);
- sc->ignet_push_shares = mptr;
- }
- if (sc->misc != NULL) {
- StrBufAppendBufPlain(Cfg, sc->misc, -1, 0);
- }
- free(sc->misc);
-
- rc = write(TmpFD, ChrPtr(Cfg), StrLength(Cfg));
- if ((rc >=0 ) && (rc == StrLength(Cfg)))
- {
- close(TmpFD);
- rename(tempfilename, filename);
- }
- else {
- syslog(LOG_EMERG,
- "unable to write %s; [%s]; not enough space on the disk?\n",
- tempfilename,
- strerror(errno));
- close(TmpFD);
- unlink(tempfilename);
- }
- FreeStrBuf(&Cfg);
- free(sc);
- *scc=NULL;
- }
- return 1;
-}
-int is_recipient(SpoolControl *sc, const char *Name)
-{
- namelist *nptr;
- size_t len;
-
- len = strlen(Name);
- nptr = sc->listrecps;
- while (nptr != NULL) {
- if (strncmp(Name, nptr->name, len)==0)
- return 1;
- nptr = nptr->next;
- }
- /* Do the same for digestrecps */
- nptr = sc->digestrecps;
- while (nptr != NULL) {
- if (strncmp(Name, nptr->name, len)==0)
- return 1;
- nptr = nptr->next;
- }
- /* Do the same for participates */
- nptr = sc->participates;
- while (nptr != NULL) {
- if (strncmp(Name, nptr->name, len)==0)
- return 1;
- nptr = nptr->next;
- }
- return 0;
-}
-
-
-/*
- * Batch up and send all outbound traffic from the current room
- */
-void network_spoolout_room(char *room_to_spool) {
- char buf[SIZ];
- char filename[PATH_MAX];
- SpoolControl *sc;
- int i;
- /*
- * If the room doesn't exist, don't try to perform its networking tasks.
- * Normally this should never happen, but once in a while maybe a room gets
- * queued for networking and then deleted before it can happen.
- */
- if (CtdlGetRoom(&CC->room, room_to_spool) != 0) {
- syslog(LOG_CRIT, "ERROR: cannot load <%s>\n", room_to_spool);
- return;
- }
-
- assoc_file_name(filename, sizeof filename, &CC->room, ctdl_netcfg_dir);
- begin_critical_section(S_NETCONFIGS);
-
- /* Only do net processing for rooms that have netconfigs */
- if (!read_spoolcontrol_file(&sc, filename))
- {
- end_critical_section(S_NETCONFIGS);
- return;
- }
- syslog(LOG_INFO, "Networking started for <%s>\n", CC->room.QRname);
- /* If there are digest recipients, we have to build a digest */
- if (sc->digestrecps != NULL) {
- sc->digestfp = tmpfile();
- fprintf(sc->digestfp, "Content-type: text/plain\n\n");
- }
- /* Do something useful */
- CtdlForEachMessage(MSGS_GT, sc->lastsent, NULL, NULL, NULL,
- network_spool_msg, sc);
- /* If we wrote a digest, deliver it and then close it */
- snprintf(buf, sizeof buf, "room_%s@%s",
- CC->room.QRname, config.c_fqdn);
- for (i=0; buf[i]; ++i) {
- buf[i] = tolower(buf[i]);
- if (isspace(buf[i])) buf[i] = '_';
- }
- if (sc->digestfp != NULL) {
- fprintf(sc->digestfp, " -----------------------------------"
- "------------------------------------"
- "-------\n"
- "You are subscribed to the '%s' "
- "list.\n"
- "To post to the list: %s\n",
- CC->room.QRname, buf
- );
- network_deliver_digest(sc); /* deliver and close */
- }
- /* Now rewrite the config file */
- writenfree_spoolcontrol_file(&sc, filename);
- end_critical_section(S_NETCONFIGS);
-}
}
-/*
- * Learn topology from path fields
- */
-void network_learn_topology(char *node, char *path) {
- char nexthop[256];
- NetMap *nmptr;
-
- strcpy(nexthop, "");
-
- if (num_tokens(path, '!') < 3) return;
- for (nmptr = the_netmap; nmptr != NULL; nmptr = nmptr->next) {
- if (!strcasecmp(nmptr->nodename, node)) {
- extract_token(nmptr->nexthop, path, 0, '!', sizeof nmptr->nexthop);
- nmptr->lastcontact = time(NULL);
- ++netmap_changed;
- return;
- }
- }
-
- /* If we got here then it's not in the map, so add it. */
- nmptr = (NetMap *) malloc(sizeof (NetMap));
- strcpy(nmptr->nodename, node);
- nmptr->lastcontact = time(NULL);
- extract_token(nmptr->nexthop, path, 0, '!', sizeof nmptr->nexthop);
- nmptr->next = the_netmap;
- the_netmap = nmptr;
- ++netmap_changed;
-}
-
-/*
- * Process a buffer containing a single message from a single file
- * from the inbound queue
- */
-void network_process_buffer(char *buffer, long size) {
- struct CtdlMessage *msg = NULL;
- long pos;
- int field;
- struct recptypes *recp = NULL;
- char target_room[ROOMNAMELEN];
- struct ser_ret sermsg;
- char *oldpath = NULL;
- char filename[PATH_MAX];
- FILE *fp;
- char nexthop[SIZ];
- unsigned char firstbyte;
- unsigned char lastbyte;
-
- syslog(LOG_DEBUG, "network_process_buffer() processing %ld bytes\n", size);
-
- /* Validate just a little bit. First byte should be FF and * last byte should be 00. */
- firstbyte = buffer[0];
- lastbyte = buffer[size-1];
- if ( (firstbyte != 255) || (lastbyte != 0) ) {
- syslog(LOG_ERR, "Corrupt message ignored. Length=%ld, firstbyte = %d, lastbyte = %d\n",
- size, firstbyte, lastbyte);
- return;
- }
-
- /* Set default target room to trash */
- strcpy(target_room, TWITROOM);
-
- /* Load the message into memory */
- msg = (struct CtdlMessage *) malloc(sizeof(struct CtdlMessage));
- memset(msg, 0, sizeof(struct CtdlMessage));
- msg->cm_magic = CTDLMESSAGE_MAGIC;
- msg->cm_anon_type = buffer[1];
- msg->cm_format_type = buffer[2];
-
- for (pos = 3; pos < size; ++pos) {
- field = buffer[pos];
- msg->cm_fields[field] = strdup(&buffer[pos+1]);
- pos = pos + strlen(&buffer[(int)pos]);
- }
-
- /* Check for message routing */
- if (msg->cm_fields['D'] != NULL) {
- if (strcasecmp(msg->cm_fields['D'], config.c_nodename)) {
-
- /* route the message */
- strcpy(nexthop, "");
- if (is_valid_node(nexthop, NULL, msg->cm_fields['D']) == 0) {
- /* prepend our node to the path */
- if (msg->cm_fields['P'] != NULL) {
- oldpath = msg->cm_fields['P'];
- msg->cm_fields['P'] = NULL;
- }
- else {
- oldpath = strdup("unknown_user");
- }
- size = strlen(oldpath) + SIZ;
- msg->cm_fields['P'] = malloc(size);
- snprintf(msg->cm_fields['P'], size, "%s!%s",
- config.c_nodename, oldpath);
- free(oldpath);
-
- /* serialize the message */
- serialize_message(&sermsg, msg);
-
- /* now send it */
- if (IsEmptyStr(nexthop)) {
- strcpy(nexthop, msg->cm_fields['D']);
- }
- snprintf(filename,
- sizeof filename,
- "%s/%s@%lx%x",
- ctdl_netout_dir,
- nexthop,
- time(NULL),
- rand()
- );
- syslog(LOG_DEBUG, "Appending to %s\n", filename);
- fp = fopen(filename, "ab");
- if (fp != NULL) {
- fwrite(sermsg.ser, sermsg.len, 1, fp);
- fclose(fp);
- }
- else {
- syslog(LOG_ERR, "%s: %s\n", filename, strerror(errno));
- }
- free(sermsg.ser);
- CtdlFreeMessage(msg);
- return;
- }
-
- else { /* invalid destination node name */
-
- network_bounce(msg,
-"A message you sent could not be delivered due to an invalid destination node"
-" name. Please check the address and try sending the message again.\n");
- msg = NULL;
- return;
-
- }
- }
- }
-
- /*
- * Check to see if we already have a copy of this message, and
- * abort its processing if so. (We used to post a warning to Aide>
- * every time this happened, but the network is now so densely
- * connected that it's inevitable.)
- */
- if (network_usetable(msg) != 0) {
- CtdlFreeMessage(msg);
- return;
- }
-
- /* Learn network topology from the path */
- if ((msg->cm_fields['N'] != NULL) && (msg->cm_fields['P'] != NULL)) {
- network_learn_topology(msg->cm_fields['N'], msg->cm_fields['P']);
- }
-
- /* Is the sending node giving us a very persuasive suggestion about
- * which room this message should be saved in? If so, go with that.
- */
- if (msg->cm_fields['C'] != NULL) {
- safestrncpy(target_room, msg->cm_fields['C'], sizeof target_room);
- }
-
- /* Otherwise, does it have a recipient? If so, validate it... */
- else if (msg->cm_fields['R'] != NULL) {
- recp = validate_recipients(msg->cm_fields['R'], NULL, 0);
- if (recp != NULL) if (recp->num_error != 0) {
- network_bounce(msg,
- "A message you sent could not be delivered due to an invalid address.\n"
- "Please check the address and try sending the message again.\n");
- msg = NULL;
- free_recipients(recp);
- syslog(LOG_DEBUG, "Bouncing message due to invalid recipient address.\n");
- return;
- }
- strcpy(target_room, ""); /* no target room if mail */
- }
-
- /* Our last shot at finding a home for this message is to see if
- * it has the O field (Originating room) set.
- */
- else if (msg->cm_fields['O'] != NULL) {
- safestrncpy(target_room, msg->cm_fields['O'], sizeof target_room);
- }
-
- /* Strip out fields that are only relevant during transit */
- if (msg->cm_fields['D'] != NULL) {
- free(msg->cm_fields['D']);
- msg->cm_fields['D'] = NULL;
- }
- if (msg->cm_fields['C'] != NULL) {
- free(msg->cm_fields['C']);
- msg->cm_fields['C'] = NULL;
- }
-
- /* save the message into a room */
- if (PerformNetprocHooks(msg, target_room) == 0) {
- msg->cm_flags = CM_SKIP_HOOKS;
- CtdlSubmitMsg(msg, recp, target_room, 0);
- }
- CtdlFreeMessage(msg);
- free_recipients(recp);
-}
-
-
-/*
- * Process a single message from a single file from the inbound queue
- */
-void network_process_message(FILE *fp, long msgstart, long msgend) {
- long hold_pos;
- long size;
- char *buffer;
-
- hold_pos = ftell(fp);
- size = msgend - msgstart + 1;
- buffer = malloc(size);
- if (buffer != NULL) {
- fseek(fp, msgstart, SEEK_SET);
- if (fread(buffer, size, 1, fp) > 0) {
- network_process_buffer(buffer, size);
- }
- free(buffer);
- }
-
- fseek(fp, hold_pos, SEEK_SET);
-}
-
-
-/*
- * Process a single file from the inbound queue
- */
-void network_process_file(char *filename) {
- FILE *fp;
- long msgstart = (-1L);
- long msgend = (-1L);
- long msgcur = 0L;
- int ch;
-
-
- fp = fopen(filename, "rb");
- if (fp == NULL) {
- syslog(LOG_CRIT, "Error opening %s: %s\n", filename, strerror(errno));
- return;
- }
-
- fseek(fp, 0L, SEEK_END);
- syslog(LOG_INFO, "network: processing %ld bytes from %s\n", ftell(fp), filename);
- rewind(fp);
-
- /* Look for messages in the data stream and break them out */
- while (ch = getc(fp), ch >= 0) {
-
- if (ch == 255) {
- if (msgstart >= 0L) {
- msgend = msgcur - 1;
- network_process_message(fp, msgstart, msgend);
- }
- msgstart = msgcur;
- }
-
- ++msgcur;
- }
-
- msgend = msgcur - 1;
- if (msgstart >= 0L) {
- network_process_message(fp, msgstart, msgend);
- }
-
- fclose(fp);
- unlink(filename);
-}
-
-
-/*
- * Process anything in the inbound queue
- */
-void network_do_spoolin(void) {
- DIR *dp;
- struct dirent *d;
- struct stat statbuf;
- char filename[PATH_MAX];
- static time_t last_spoolin_mtime = 0L;
-
- /*
- * Check the spoolin directory's modification time. If it hasn't
- * been touched, we don't need to scan it.
- */
- if (stat(ctdl_netin_dir, &statbuf)) return;
- if (statbuf.st_mtime == last_spoolin_mtime) {
- syslog(LOG_DEBUG, "network: nothing in inbound queue\n");
- return;
- }
- last_spoolin_mtime = statbuf.st_mtime;
- syslog(LOG_DEBUG, "network: processing inbound queue\n");
-
- /*
- * Ok, there's something interesting in there, so scan it.
- */
- dp = opendir(ctdl_netin_dir);
- if (dp == NULL) return;
-
- while (d = readdir(dp), d != NULL) {
- if ((strcmp(d->d_name, ".")) && (strcmp(d->d_name, ".."))) {
- snprintf(filename,
- sizeof filename,
- "%s/%s",
- ctdl_netin_dir,
- d->d_name
- );
- network_process_file(filename);
- }
- }
-
- closedir(dp);
-}
-
-/*
- * Step 1: consolidate files in the outbound queue into one file per neighbor node
- * Step 2: delete any files in the outbound queue that were for neighbors who no longer exist.
- */
-void network_consolidate_spoolout(void) {
- DIR *dp;
- struct dirent *d;
- char filename[PATH_MAX];
- char cmd[PATH_MAX];
- char nexthop[256];
- int i;
- char *ptr;
-
- /* Step 1: consolidate files in the outbound queue into one file per neighbor node */
- dp = opendir(ctdl_netout_dir);
- if (dp == NULL) return;
- while (d = readdir(dp), d != NULL) {
- if (
- (strcmp(d->d_name, "."))
- && (strcmp(d->d_name, ".."))
- && (strchr(d->d_name, '@') != NULL)
- ) {
- safestrncpy(nexthop, d->d_name, sizeof nexthop);
- ptr = strchr(nexthop, '@');
- if (ptr) *ptr = 0;
-
- snprintf(filename,
- sizeof filename,
- "%s/%s",
- ctdl_netout_dir,
- d->d_name
- );
-
- syslog(LOG_DEBUG, "Consolidate %s to %s\n", filename, nexthop);
- if (network_talking_to(nexthop, NTT_CHECK)) {
- syslog(LOG_DEBUG,
- "Currently online with %s - skipping for now\n",
- nexthop
- );
- }
- else {
- network_talking_to(nexthop, NTT_ADD);
- snprintf(cmd, sizeof cmd, "/bin/cat %s >>%s/%s && /bin/rm -f %s",
- filename,
- ctdl_netout_dir, nexthop,
- filename
- );
- system(cmd);
- network_talking_to(nexthop, NTT_REMOVE);
- }
- }
- }
- closedir(dp);
-
- /* Step 2: delete any files in the outbound queue that were for neighbors who no longer exist */
-
- dp = opendir(ctdl_netout_dir);
- if (dp == NULL) return;
-
- while (d = readdir(dp), d != NULL) {
- if (!strcmp(d->d_name, ".") || !strcmp(d->d_name, ".."))
- continue;
- ptr = strchr(d->d_name, '@');
- if (d != NULL)
- continue;
- snprintf(filename,
- sizeof filename,
- "%s/%s",
- ctdl_netout_dir,
- d->d_name
- );
-
- strcpy(nexthop, "");
- i = is_valid_node(nexthop, NULL, d->d_name);
-
- if ( (i != 0) || !IsEmptyStr(nexthop) ) {
- unlink(filename);
- }
- }
-
-
- closedir(dp);
-}
-
-
-/*
- * receive network spool from the remote system
- */
-void receive_spool(int *sock, char *remote_nodename) {
- int download_len = 0L;
- int bytes_received = 0L;
- char buf[SIZ];
- char tempfilename[PATH_MAX];
- char permfilename[PATH_MAX];
- int plen;
- FILE *fp;
-
- snprintf(tempfilename,
- sizeof tempfilename,
- "%s/%s.%lx%x",
- ctdl_nettmp_dir,
- remote_nodename,
- time(NULL),
- rand()
- );
-
- snprintf(permfilename,
- sizeof permfilename,
- "%s/%s.%lx%x",
- ctdl_netin_dir,
- remote_nodename,
- time(NULL),
- rand()
- );
-
- if (sock_puts(sock, "NDOP") < 0) return;
- if (sock_getln(sock, buf, sizeof buf) < 0) return;
- syslog(LOG_DEBUG, "<%s\n", buf);
- if (buf[0] != '2') {
- return;
- }
-
- download_len = extract_long(&buf[4], 0);
- if (download_len <= 0) {
- return;
- }
-
- bytes_received = 0L;
- fp = fopen(tempfilename, "w");
- if (fp == NULL) {
- syslog(LOG_CRIT, "Cannot create %s: %s\n", tempfilename, strerror(errno));
- return;
- }
-
- syslog(LOG_DEBUG, "Expecting to transfer %d bytes\n", download_len);
- while (bytes_received < download_len) {
- /*
- * If shutting down we can exit here and unlink the temp file.
- * this shouldn't loose us any messages.
- */
- if (server_shutting_down)
- {
- fclose(fp);
- unlink(tempfilename);
- return;
- }
- snprintf(buf, sizeof buf, "READ %d|%d",
- bytes_received,
- ((download_len - bytes_received > IGNET_PACKET_SIZE)
- ? IGNET_PACKET_SIZE : (download_len - bytes_received))
- );
-
- if (sock_puts(sock, buf) < 0) {
- fclose(fp);
- unlink(tempfilename);
- return;
- }
- if (sock_getln(sock, buf, sizeof buf) < 0) {
- fclose(fp);
- unlink(tempfilename);
- return;
- }
-
- if (buf[0] == '6') {
- plen = extract_int(&buf[4], 0);
- StrBuf *pbuf = NewStrBuf();
- if (socket_read_blob(sock, pbuf, plen, CLIENT_TIMEOUT) != plen) {
- syslog(LOG_INFO, "Short read from peer; aborting.\n");
- fclose(fp);
- unlink(tempfilename);
- FreeStrBuf(&pbuf);
- return;
- }
- fwrite(ChrPtr(pbuf), plen, 1, fp);
- bytes_received += plen;
- FreeStrBuf(&pbuf);
- }
- }
-
- fclose(fp);
-
- /* Last chance for shutdown exit */
- if (server_shutting_down)
- {
- unlink(tempfilename);
- return;
- }
-
- if (sock_puts(sock, "CLOS") < 0) {
- unlink(tempfilename);
- return;
- }
-
- /*
- * From here on we must complete or messages will get lost
- */
- if (sock_getln(sock, buf, sizeof buf) < 0) {
- unlink(tempfilename);
- return;
- }
-
- syslog(LOG_DEBUG, "%s\n", buf);
-
- /*
- * Now move the temp file to its permanent location.
- */
- if (link(tempfilename, permfilename) != 0) {
- syslog(LOG_ALERT, "Could not link %s to %s: %s\n",
- tempfilename, permfilename, strerror(errno)
- );
- }
-
- unlink(tempfilename);
-}
-
-
-
-/*
- * transmit network spool to the remote system
- */
-void transmit_spool(int *sock, char *remote_nodename)
-{
- char buf[SIZ];
- char pbuf[4096];
- long plen;
- long bytes_to_write, thisblock, bytes_written;
- int fd;
- char sfname[128];
-
- if (sock_puts(sock, "NUOP") < 0) return;
- if (sock_getln(sock, buf, sizeof buf) < 0) return;
- syslog(LOG_DEBUG, "<%s\n", buf);
- if (buf[0] != '2') {
- return;
- }
-
- snprintf(sfname, sizeof sfname,
- "%s/%s",
- ctdl_netout_dir,
- remote_nodename
- );
- fd = open(sfname, O_RDONLY);
- if (fd < 0) {
- if (errno != ENOENT) {
- syslog(LOG_CRIT, "cannot open %s: %s\n", sfname, strerror(errno));
- }
- return;
- }
- bytes_written = 0;
- while (plen = (long) read(fd, pbuf, IGNET_PACKET_SIZE), plen > 0L) {
- bytes_to_write = plen;
- while (bytes_to_write > 0L) {
- /* Exit if shutting down */
- if (server_shutting_down)
- {
- close(fd);
- return;
- }
-
- snprintf(buf, sizeof buf, "WRIT %ld", bytes_to_write);
- if (sock_puts(sock, buf) < 0) {
- close(fd);
- return;
- }
- if (sock_getln(sock, buf, sizeof buf) < 0) {
- close(fd);
- return;
- }
- thisblock = atol(&buf[4]);
- if (buf[0] == '7') {
- if (sock_write(sock, pbuf, (int) thisblock) < 0) {
- close(fd);
- return;
- }
- bytes_to_write -= thisblock;
- bytes_written += thisblock;
- } else {
- goto ABORTUPL;
- }
- }
- }
-
-ABORTUPL:
- close(fd);
-
- /* Last chance for shutdown exit */
- if(server_shutting_down)
- return;
-
- if (sock_puts(sock, "UCLS 1") < 0) return;
-
- /*
- * From here on we must complete or messages will get lost
- */
- if (sock_getln(sock, buf, sizeof buf) < 0) return;
- syslog(LOG_NOTICE, "Sent %ld octets to <%s>\n", bytes_written, remote_nodename);
- syslog(LOG_DEBUG, "<%s\n", buf);
- if (buf[0] == '2') {
- syslog(LOG_DEBUG, "Removing <%s>\n", sfname);
- unlink(sfname);
- }
-}
-
-
-
-/*
- * Poll one Citadel node (called by network_poll_other_citadel_nodes() below)
- */
-void network_poll_node(char *node, char *secret, char *host, char *port) {
- int sock;
- char buf[SIZ];
- char err_buf[SIZ];
- char connected_to[SIZ];
- CitContext *CCC=CC;
-
- if (network_talking_to(node, NTT_CHECK)) return;
- network_talking_to(node, NTT_ADD);
- syslog(LOG_DEBUG, "network: polling <%s>\n", node);
- syslog(LOG_NOTICE, "Connecting to <%s> at %s:%s\n", node, host, port);
-
- sock = sock_connect(host, port);
- if (sock < 0) {
- syslog(LOG_ERR, "Could not connect: %s\n", strerror(errno));
- network_talking_to(node, NTT_REMOVE);
- return;
- }
-
- syslog(LOG_DEBUG, "Connected!\n");
- CCC->SBuf.Buf = NewStrBuf();
- CCC->sMigrateBuf = NewStrBuf();
- CCC->SBuf.ReadWritePointer = NULL;
-
- /* Read the server greeting */
- if (sock_getln(&sock, buf, sizeof buf) < 0) goto bail;
- syslog(LOG_DEBUG, ">%s\n", buf);
-
- /* Check that the remote is who we think it is and warn the Aide if not */
- extract_token (connected_to, buf, 1, ' ', sizeof connected_to);
- if (strcmp(connected_to, node))
- {
- snprintf(err_buf, sizeof(err_buf),
- "Connected to node \"%s\" but I was expecting to connect to node \"%s\".",
- connected_to, node
- );
- syslog(LOG_ERR, "%s\n", err_buf);
- CtdlAideMessage(err_buf, "Network error");
- }
- else {
- /* We're talking to the correct node. Now identify ourselves. */
- snprintf(buf, sizeof buf, "NETP %s|%s", config.c_nodename, secret);
- syslog(LOG_DEBUG, "<%s\n", buf);
- if (sock_puts(&sock, buf) <0) goto bail;
- if (sock_getln(&sock, buf, sizeof buf) < 0) goto bail;
- syslog(LOG_DEBUG, ">%s\n", buf);
- if (buf[0] != '2') {
- goto bail;
- }
-
- /* At this point we are authenticated. */
- if (!server_shutting_down)
- receive_spool(&sock, node);
- if (!server_shutting_down)
- transmit_spool(&sock, node);
- }
-
- sock_puts(&sock, "QUIT");
-bail:
- FreeStrBuf(&CCC->SBuf.Buf);
- FreeStrBuf(&CCC->sMigrateBuf);
- if (sock != -1)
- sock_close(sock);
- network_talking_to(node, NTT_REMOVE);
-}
-
-
-
-/*
- * Poll other Citadel nodes and transfer inbound/outbound network data.
- * Set "full" to nonzero to force a poll of every node, or to zero to poll
- * only nodes to which we have data to send.
- */
-void network_poll_other_citadel_nodes(int full_poll) {
- int i;
- char linebuf[256];
- char node[SIZ];
- char host[256];
- char port[256];
- char secret[256];
- int poll = 0;
- char spoolfile[256];
-
- if (working_ignetcfg == NULL) {
- syslog(LOG_DEBUG, "network: no neighbor nodes are configured - not polling.\n");
- return;
- }
-
- /* Use the string tokenizer to grab one line at a time */
- for (i=0; i<num_tokens(working_ignetcfg, '\n'); ++i) {
- if(server_shutting_down)
- return;
- extract_token(linebuf, working_ignetcfg, i, '\n', sizeof linebuf);
- extract_token(node, linebuf, 0, '|', sizeof node);
- extract_token(secret, linebuf, 1, '|', sizeof secret);
- extract_token(host, linebuf, 2, '|', sizeof host);
- extract_token(port, linebuf, 3, '|', sizeof port);
- if ( !IsEmptyStr(node) && !IsEmptyStr(secret)
- && !IsEmptyStr(host) && !IsEmptyStr(port)) {
- poll = full_poll;
- if (poll == 0) {
- snprintf(spoolfile,
- sizeof spoolfile,
- "%s/%s",
- ctdl_netout_dir,
- node
- );
- if (access(spoolfile, R_OK) == 0) {
- poll = 1;
- }
- }
- if (poll) {
- network_poll_node(node, secret, host, port);
- }
- }
- }
-
-}
-
-
-
-
-/*
- * It's ok if these directories already exist. Just fail silently.
- */
-void create_spool_dirs(void) {
- if ((mkdir(ctdl_spool_dir, 0700) != 0) && (errno != EEXIST))
- syslog(LOG_EMERG, "unable to create directory [%s]: %s", ctdl_spool_dir, strerror(errno));
- if (chown(ctdl_spool_dir, CTDLUID, (-1)) != 0)
- syslog(LOG_EMERG, "unable to set the access rights for [%s]: %s", ctdl_spool_dir, strerror(errno));
- if ((mkdir(ctdl_netin_dir, 0700) != 0) && (errno != EEXIST))
- syslog(LOG_EMERG, "unable to create directory [%s]: %s", ctdl_netin_dir, strerror(errno));
- if (chown(ctdl_netin_dir, CTDLUID, (-1)) != 0)
- syslog(LOG_EMERG, "unable to set the access rights for [%s]: %s", ctdl_netin_dir, strerror(errno));
- if ((mkdir(ctdl_nettmp_dir, 0700) != 0) && (errno != EEXIST))
- syslog(LOG_EMERG, "unable to create directory [%s]: %s", ctdl_nettmp_dir, strerror(errno));
- if (chown(ctdl_nettmp_dir, CTDLUID, (-1)) != 0)
- syslog(LOG_EMERG, "unable to set the access rights for [%s]: %s", ctdl_nettmp_dir, strerror(errno));
- if ((mkdir(ctdl_netout_dir, 0700) != 0) && (errno != EEXIST))
- syslog(LOG_EMERG, "unable to create directory [%s]: %s", ctdl_netout_dir, strerror(errno));
- if (chown(ctdl_netout_dir, CTDLUID, (-1)) != 0)
- syslog(LOG_EMERG, "unable to set the access rights for [%s]: %s", ctdl_netout_dir, strerror(errno));
-}
-
-
/* Load the IGnet Configuration into memory */
load_working_ignetcfg();
- /*
- * Poll other Citadel nodes. Maybe. If "full_processing" is set
- * then we poll everyone. Otherwise we only poll nodes we have stuff
- * to send to.
- */
- network_poll_other_citadel_nodes(full_processing);
/*
* Load the network map and filter list into memory.
}
-/*
- * cmd_netp() - authenticate to the server as another Citadel node polling
- * for network traffic
- */
-void cmd_netp(char *cmdbuf)
-{
- char node[256];
- char pass[256];
- int v;
-
- char secret[256];
- char nexthop[256];
- char err_buf[SIZ];
-
- /* Authenticate */
- extract_token(node, cmdbuf, 0, '|', sizeof node);
- extract_token(pass, cmdbuf, 1, '|', sizeof pass);
-
- /* load the IGnet Configuration to check node validity */
- load_working_ignetcfg();
- v = is_valid_node(nexthop, secret, node);
-
- if (v != 0) {
- snprintf(err_buf, sizeof err_buf,
- "An unknown Citadel server called \"%s\" attempted to connect from %s [%s].\n",
- node, CC->cs_host, CC->cs_addr
- );
- syslog(LOG_WARNING, "%s", err_buf);
- cprintf("%d authentication failed\n", ERROR + PASSWORD_REQUIRED);
- CtdlAideMessage(err_buf, "IGNet Networking.");
- return;
- }
-
- if (strcasecmp(pass, secret)) {
- snprintf(err_buf, sizeof err_buf,
- "A Citadel server at %s [%s] failed to authenticate as network node \"%s\".\n",
- CC->cs_host, CC->cs_addr, node
- );
- syslog(LOG_WARNING, "%s", err_buf);
- cprintf("%d authentication failed\n", ERROR + PASSWORD_REQUIRED);
- CtdlAideMessage(err_buf, "IGNet Networking.");
- return;
- }
-
- if (network_talking_to(node, NTT_CHECK)) {
- syslog(LOG_WARNING, "Duplicate session for network node <%s>", node);
- cprintf("%d Already talking to %s right now\n", ERROR + RESOURCE_BUSY, node);
- return;
- }
-
- safestrncpy(CC->net_node, node, sizeof CC->net_node);
- network_talking_to(node, NTT_ADD);
- syslog(LOG_NOTICE, "Network node <%s> logged in from %s [%s]\n",
- CC->net_node, CC->cs_host, CC->cs_addr
- );
- cprintf("%d authenticated as network node '%s'\n", CIT_OK, CC->net_node);
-}
int network_room_handler (struct ctdlroom *room)
{
if (!threading)
{
- create_spool_dirs();
- CtdlRegisterProtoHook(cmd_gnet, "GNET", "Get network config");
- CtdlRegisterProtoHook(cmd_snet, "SNET", "Set network config");
- CtdlRegisterProtoHook(cmd_netp, "NETP", "Identify as network poller");
CtdlRegisterProtoHook(cmd_nsyn, "NSYN", "Synchronize room to node");
CtdlRegisterRoomHook(network_room_handler);
CtdlRegisterCleanupHook(destroy_network_queue_room);
projects / citadel.git / blobdiff