/*
- * This module handles shared rooms, inter-Citadel mail, and outbound
- * mailing list processing.
+ * This module handles network mail and mailing list processing.
*
- * Copyright (c) 2000-2012 by the citadel.org team
+ * Copyright (c) 2000-2021 by the citadel.org team
*
- * This program is open source software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License, version 3.
+ * This program is open source software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, version 3.
*
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
*
* ** NOTE ** A word on the S_NETCONFIGS semaphore:
* This is a fairly high-level type of critical section. It ensures that no
* so many things inside these, here are the rules:
* 1. begin_critical_section(S_NETCONFIGS) *before* begin_ any others.
* 2. Do *not* perform any I/O with the client during these sections.
- *
*/
/*
#include <sys/stat.h>
#include <sys/types.h>
#include <dirent.h>
-#if TIME_WITH_SYS_TIME
-# include <sys/time.h>
-# include <time.h>
-#else
-# if HAVE_SYS_TIME_H
-# include <sys/time.h>
-# else
-# include <time.h>
-# endif
-#endif
+#include <time.h>
+
#ifdef HAVE_SYSCALL_H
# include <syscall.h>
#else
#include "internet_addressing.h"
#include "serv_network.h"
#include "clientsocket.h"
-#include "file_ops.h"
#include "citadel_dirs.h"
#include "threads.h"
#include "context.h"
#include "netspool.h"
#include "netmail.h"
-int NetQDebugEnabled = 0;
-struct CitContext networker_spool_CC;
-
-/* comes from lookup3.c from libcitadel... */
-extern uint32_t hashlittle( const void *key, size_t length, uint32_t initval);
-
-typedef struct __roomlists {
- RoomProcList *rplist;
- HashList *RoomsInterestedIn;
-}roomlists;
-/*
- * When we do network processing, it's accomplished in two passes; one to
- * gather a list of rooms and one to actually do them. It's ok that rplist
- * is global; we have a mutex that keeps it safe.
- */
-struct RoomProcList *rplist = NULL;
-
-int GetNetworkedRoomNumbers(const char *DirName, HashList *DirList)
-{
- DIR *filedir = NULL;
- struct dirent *d;
- struct dirent *filedir_entry;
- long RoomNR;
- long Count = 0;
-
- filedir = opendir (DirName);
- if (filedir == NULL) {
- return 0;
- }
-
- d = (struct dirent *)malloc(offsetof(struct dirent, d_name) + PATH_MAX + 1);
- if (d == NULL) {
- return 0;
- }
-
- while ((readdir_r(filedir, d, &filedir_entry) == 0) &&
- (filedir_entry != NULL))
- {
- RoomNR = atol(filedir_entry->d_name);
- if (RoomNR != 0) {
- Count++;
- Put(DirList, LKEY(RoomNR), &Count, reference_free_handler);
- }
- }
- free(d);
- closedir(filedir);
- return Count;
-}
-
-
-
-
-/*
- * Check the use table. This is a list of messages which have recently
- * arrived on the system. It is maintained and queried to prevent the same
- * message from being entered into the database multiple times if it happens
- * to arrive multiple times by accident.
- */
-int network_usetable(struct CtdlMessage *msg)
-{
- struct CitContext *CCC = CC;
- char msgid[SIZ];
- struct cdbdata *cdbut;
- struct UseTable ut;
-
- /* Bail out if we can't generate a message ID */
- if (msg == NULL) {
- return(0);
- }
- if (msg->cm_fields['I'] == NULL) {
- return(0);
- }
- if (IsEmptyStr(msg->cm_fields['I'])) {
- return(0);
- }
-
- /* Generate the message ID */
- strcpy(msgid, msg->cm_fields['I']);
- if (haschar(msgid, '@') == 0) {
- strcat(msgid, "@");
- if (msg->cm_fields['N'] != NULL) {
- strcat(msgid, msg->cm_fields['N']);
- }
- else {
- return(0);
- }
- }
-
- cdbut = cdb_fetch(CDB_USETABLE, msgid, strlen(msgid));
- if (cdbut != NULL) {
- cdb_free(cdbut);
- QN_syslog(LOG_DEBUG, "network_usetable() : we already have %s\n", msgid);
- return(1);
- }
-
- /* If we got to this point, it's unique: add it. */
- strcpy(ut.ut_msgid, msgid);
- ut.ut_timestamp = time(NULL);
- cdb_store(CDB_USETABLE, msgid, strlen(msgid), &ut, sizeof(struct UseTable) );
- return(0);
-}
-
-
-
-
-
-
-
-#if 0
-
-
-/*
- * Send the *entire* contents of the current room to one specific network node,
- * ignoring anything we know about which messages have already undergone
- * network processing. This can be used to bring a new node into sync.
- */
-int network_sync_to(char *target_node, long len)
-{
- struct CitContext *CCC = CC;
- SpoolControl sc;
- int num_spooled = 0;
- int found_node = 0;
- char buf[256];
- char sc_type[256];
- char sc_node[256];
- char sc_room[256];
- char filename[PATH_MAX];
- FILE *fp;
-
- /* Grab the configuration line we're looking for */
- assoc_file_name(filename, sizeof filename, &CC->room, ctdl_netcfg_dir);
- begin_critical_section(S_NETCONFIGS);
- fp = fopen(filename, "r");
- if (fp == NULL) {
- end_critical_section(S_NETCONFIGS);
- return(-1);
- }
- while (fgets(buf, sizeof buf, fp) != NULL)
- {
- buf[strlen(buf)-1] = 0;
-
- extract_token(sc_type, buf, 0, '|', sizeof sc_type);
- if (strcasecmp(sc_type, "ignet_push_share"))
- continue;
-
- extract_token(sc_node, buf, 1, '|', sizeof sc_node);
- if (strcasecmp(sc_node, target_node))
- continue;
-
- extract_token(sc_room, buf, 2, '|', sizeof sc_room);
- found_node = 1;
-
- /* Concise syntax because we don't need a full linked-list */
- memset(&sc, 0, sizeof(SpoolControl));
- sc.ignet_push_shares = (maplist *)
- malloc(sizeof(maplist));
- sc.ignet_push_shares->next = NULL;
- safestrncpy(sc.ignet_push_shares->remote_nodename,
- sc_node,
- sizeof sc.ignet_push_shares->remote_nodename);
- safestrncpy(sc.ignet_push_shares->remote_roomname,
- sc_room,
- sizeof sc.ignet_push_shares->remote_roomname);
- }
- fclose(fp);
- end_critical_section(S_NETCONFIGS);
-
- if (!found_node) {
- free(sc.ignet_push_shares);
- return(-1);
- }
-
- sc.working_ignetcfg = load_ignetcfg();
- sc.the_netmap = CtdlReadNetworkMap();
-
- /* Send ALL messages */
- num_spooled = CtdlForEachMessage(MSGS_ALL, 0L, NULL, NULL, NULL,
- network_spool_msg, &sc);
-
- /* Concise cleanup because we know there's only one node in the sc */
- free(sc.ignet_push_shares);
-
- DeleteHash(&sc.working_ignetcfg);
- DeleteHash(&sc.the_netmap);
-
- QN_syslog(LOG_NOTICE, "Synchronized %d messages to <%s>\n",
- num_spooled, target_node);
- return(num_spooled);
-}
-
-#endif
-
-
-/*
- * Implements the NSYN command
- */
-void cmd_nsyn(char *argbuf) {
- int num_spooled;
- long len;
- char target_node[256];
-
- if (CtdlAccessCheck(ac_aide)) return;
-
- len = extract_token(target_node, argbuf, 0, '|', sizeof target_node);
- ///// TODO num_spooled = network_sync_to(target_node, len);
- if (num_spooled >= 0) {
- cprintf("%d Spooled %d messages.\n", CIT_OK, num_spooled);
- }
- else {
- cprintf("%d No such room/node share exists.\n",
- ERROR + ROOM_NOT_FOUND);
- }
-}
-
-
-
-/*
- * Batch up and send all outbound traffic from the current room
- */
-void network_queue_interesting_rooms(struct ctdlroom *qrbuf, void *data) {
- int i;
- struct RoomProcList *ptr;
- long QRNum = qrbuf->QRnumber;
- void *v;
- roomlists *RP = (roomlists*) data;
-
- if (!GetHash(RP->RoomsInterestedIn, LKEY(QRNum), &v))
- return;
-
- ptr = (struct RoomProcList *) malloc(sizeof (struct RoomProcList));
- if (ptr == NULL) return;
-
- ptr->namelen = strlen(qrbuf->QRname);
- if (ptr->namelen > ROOMNAMELEN)
- ptr->namelen = ROOMNAMELEN - 1;
-
- memcpy (ptr->name, qrbuf->QRname, ptr->namelen);
- ptr->name[ptr->namelen] = '\0';
- ptr->QRNum = qrbuf->QRnumber;
-
- for (i = 0; i < ptr->namelen; i++)
- {
- ptr->lcname[i] = tolower(ptr->name[i]);
- }
-
- ptr->lcname[ptr->namelen] = '\0';
- ptr->key = hashlittle(ptr->lcname, ptr->namelen, 9872345);
- ptr->next = RP->rplist;
- RP->rplist = ptr;
-}
-
-/*
- * Batch up and send all outbound traffic from the current room
- */
-void network_queue_room(struct ctdlroom *qrbuf, void *data) {
- int i;
- struct RoomProcList *ptr;
-
- if (qrbuf->QRdefaultview == VIEW_QUEUE)
- return;
- ptr = (struct RoomProcList *) malloc(sizeof (struct RoomProcList));
- if (ptr == NULL) return;
-
- ptr->namelen = strlen(qrbuf->QRname);
- if (ptr->namelen > ROOMNAMELEN)
- ptr->namelen = ROOMNAMELEN - 1;
-
- memcpy (ptr->name, qrbuf->QRname, ptr->namelen);
- ptr->name[ptr->namelen] = '\0';
- ptr->QRNum = qrbuf->QRnumber;
-
- for (i = 0; i < ptr->namelen; i++)
- {
- ptr->lcname[i] = tolower(ptr->name[i]);
- }
- ptr->lcname[ptr->namelen] = '\0';
- ptr->key = hashlittle(ptr->lcname, ptr->namelen, 9872345);
-
- begin_critical_section(S_RPLIST);
- ptr->next = rplist;
- rplist = ptr;
- end_critical_section(S_RPLIST);
-}
-
-void destroy_network_queue_room(RoomProcList *rplist)
-{
- struct RoomProcList *cur, *p;
-
- cur = rplist;
- while (cur != NULL)
- {
- p = cur->next;
- free (cur);
- cur = p;
- }
-}
-
-void destroy_network_queue_room_locked (void)
-{
- begin_critical_section(S_RPLIST);
- destroy_network_queue_room(rplist);
- end_critical_section(S_RPLIST);
-}
-
-
-
-/*
- * Bounce a message back to the sender
- */
-void network_bounce(struct CtdlMessage *msg, char *reason)
-{
- struct CitContext *CCC = CC;
- char *oldpath = NULL;
- char buf[SIZ];
- char bouncesource[SIZ];
- char recipient[SIZ];
- struct recptypes *valid = NULL;
- char force_room[ROOMNAMELEN];
- static int serialnum = 0;
- size_t size;
-
- QNM_syslog(LOG_DEBUG, "entering network_bounce()\n");
-
- if (msg == NULL) return;
-
- snprintf(bouncesource, sizeof bouncesource, "%s@%s", BOUNCESOURCE, config.c_nodename);
-
- /*
- * Give it a fresh message ID
- */
- if (msg->cm_fields['I'] != NULL) {
- free(msg->cm_fields['I']);
- }
- snprintf(buf, sizeof buf, "%ld.%04lx.%04x@%s",
- (long)time(NULL), (long)getpid(), ++serialnum, config.c_fqdn);
- msg->cm_fields['I'] = strdup(buf);
-
- /*
- * FIXME ... right now we're just sending a bounce; we really want to
- * include the text of the bounced message.
- */
- if (msg->cm_fields['M'] != NULL) {
- free(msg->cm_fields['M']);
- }
- msg->cm_fields['M'] = strdup(reason);
- msg->cm_format_type = 0;
-
- /*
- * Turn the message around
- */
- if (msg->cm_fields['R'] == NULL) {
- free(msg->cm_fields['R']);
- }
-
- if (msg->cm_fields['D'] == NULL) {
- free(msg->cm_fields['D']);
- }
-
- snprintf(recipient, sizeof recipient, "%s@%s",
- msg->cm_fields['A'], msg->cm_fields['N']);
-
- if (msg->cm_fields['A'] == NULL) {
- free(msg->cm_fields['A']);
- }
-
- if (msg->cm_fields['N'] == NULL) {
- free(msg->cm_fields['N']);
- }
-
- if (msg->cm_fields['U'] == NULL) {
- free(msg->cm_fields['U']);
- }
-
- msg->cm_fields['A'] = strdup(BOUNCESOURCE);
- msg->cm_fields['N'] = strdup(config.c_nodename);
- msg->cm_fields['U'] = strdup("Delivery Status Notification (Failure)");
-
- /* 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);
-
- /* Now submit the message */
- valid = validate_recipients(recipient, NULL, 0);
- if (valid != NULL) if (valid->num_error != 0) {
- free_recipients(valid);
- valid = NULL;
- }
- if ( (valid == NULL) || (!strcasecmp(recipient, bouncesource)) ) {
- strcpy(force_room, config.c_aideroom);
- }
- else {
- strcpy(force_room, "");
- }
- if ( (valid == NULL) && IsEmptyStr(force_room) ) {
- strcpy(force_room, config.c_aideroom);
- }
- CtdlSubmitMsg(msg, valid, force_room, 0);
-
- /* Clean up */
- if (valid != NULL) free_recipients(valid);
- CtdlFreeMessage(msg);
- QNM_syslog(LOG_DEBUG, "leaving network_bounce()\n");
-}
-
-
-
-
-
-
-
-/*
- * network_do_queue()
- *
- * Run through the rooms doing various types of network stuff.
- */
-void network_do_queue(void)
-{
- struct CitContext *CCC = CC;
- static int doing_queue = 0;
- static time_t last_run = 0L;
- int full_processing = 1;
- HashList *working_ignetcfg;
- HashList *the_netmap = NULL;
- int netmap_changed = 0;
- roomlists RL;
-
- /*
- * Run the full set of processing tasks no more frequently
- * than once every n seconds
- */
- if ( (time(NULL) - last_run) < config.c_net_freq ) {
- full_processing = 0;
- syslog(LOG_DEBUG, "Network full processing in %ld seconds.\n",
- config.c_net_freq - (time(NULL)- last_run)
- );
- }
-
- /*
- * This is a simple concurrency check to make sure only one queue run
- * is done at a time. We could do this with a mutex, but since we
- * don't really require extremely fine granularity here, we'll do it
- * with a static variable instead.
- */
- if (doing_queue) {
- return;
- }
- doing_queue = 1;
-
- become_session(&networker_spool_CC);
- begin_critical_section(S_RPLIST);
- RL.rplist = rplist;
- rplist = NULL;
- end_critical_section(S_RPLIST);
-
- RL.RoomsInterestedIn = NewHash(1, lFlathash);
- if (full_processing &&
- (GetNetworkedRoomNumbers(ctdl_netcfg_dir, RL.RoomsInterestedIn)==0))
- {
- doing_queue = 0;
- DeleteHash(&RL.RoomsInterestedIn);
- if (RL.rplist == NULL)
- return;
- }
- /* Load the IGnet Configuration into memory */
- working_ignetcfg = CtdlLoadIgNetCfg();
-
- /*
- * Load the network map and filter list into memory.
- */
- if (!server_shutting_down)
- the_netmap = CtdlReadNetworkMap();
- if (!server_shutting_down)
- load_network_filter_list();
-
- /*
- * Go ahead and run the queue
- */
- if (full_processing && !server_shutting_down) {
- QNM_syslog(LOG_DEBUG, "network: loading outbound queue");
- CtdlForEachRoom(network_queue_interesting_rooms, &RL);
- }
-
- if ((RL.rplist != NULL) && (!server_shutting_down)) {
- RoomProcList *ptr, *cmp;
- ptr = RL.rplist;
- QNM_syslog(LOG_DEBUG, "network: running outbound queue");
- while (ptr != NULL && !server_shutting_down) {
-
- cmp = ptr->next;
-
- while (cmp != NULL) {
- if ((cmp->namelen > 0) &&
- (cmp->key == ptr->key) &&
- (cmp->namelen == ptr->namelen) &&
- (strcmp(cmp->lcname, ptr->lcname) == 0))
- {
- cmp->namelen = 0;
- }
- cmp = cmp->next;
- }
-
- if (ptr->namelen > 0) {
- network_spoolout_room(ptr,
- working_ignetcfg,
- the_netmap);
- }
- ptr = ptr->next;
- }
- }
-
- /* If there is anything in the inbound queue, process it */
- if (!server_shutting_down) {
- network_do_spoolin(working_ignetcfg,
- the_netmap,
- &netmap_changed);
- }
-
- /* Free the filter list in memory */
- free_netfilter_list();
-
- /* Save the network map back to disk */
- if (netmap_changed) {
- StrBuf *MapStr = CtdlSerializeNetworkMap(the_netmap);
- CtdlPutSysConfig(IGNETMAP, SmashStrBuf(&MapStr));
- }
-
- /* combine singe message files into one spool entry per remote node. */
- network_consolidate_spoolout(working_ignetcfg, the_netmap);
-
- /* shut down. */
-
- DeleteHash(&the_netmap);
-
- DeleteHash(&working_ignetcfg);
-
- QNM_syslog(LOG_DEBUG, "network: queue run completed");
-
- if (full_processing) {
- last_run = time(NULL);
- }
- DeleteHash(&RL.RoomsInterestedIn);
- destroy_network_queue_room(RL.rplist);
- doing_queue = 0;
-}
-
-
-
-
-int network_room_handler (struct ctdlroom *room)
-{
- network_queue_room(room, NULL);
- return 0;
-}
-
-
-
-
-void network_logout_hook(void)
-{
- CitContext *CCC = MyContext();
-
- /*
- * If we were talking to a network node, we're not anymore...
- */
- if (!IsEmptyStr(CCC->net_node)) {
- CtdlNetworkTalkingTo(CCC->net_node, strlen(CCC->net_node), NTT_REMOVE);
- CCC->net_node[0] = '\0';
- }
-}
-void network_cleanup_function(void)
-{
- struct CitContext *CCC = CC;
-
- if (!IsEmptyStr(CCC->net_node)) {
- CtdlNetworkTalkingTo(CCC->net_node, strlen(CCC->net_node), NTT_REMOVE);
- CCC->net_node[0] = '\0';
- }
-}
/*
* Module entry point
*/
-
-void SetNetQDebugEnabled(const int n)
-{
- NetQDebugEnabled = n;
-}
-
CTDL_MODULE_INIT(network)
{
if (!threading)
{
- CtdlFillSystemContext(&networker_spool_CC, "CitNetSpool");
- CtdlRegisterDebugFlagHook(HKEY("networkqueue"), SetNetQDebugEnabled, &NetQDebugEnabled);
- CtdlRegisterSessionHook(network_cleanup_function, EVT_STOP, PRIO_STOP + 30);
- CtdlRegisterSessionHook(network_logout_hook, EVT_LOGOUT, PRIO_LOGOUT + 10);
- CtdlRegisterProtoHook(cmd_nsyn, "NSYN", "Synchronize room to node");
- CtdlRegisterRoomHook(network_room_handler);
- CtdlRegisterCleanupHook(destroy_network_queue_room_locked);
- CtdlRegisterSessionHook(network_do_queue, EVT_TIMER, PRIO_QUEUE + 10);
}
return "network";
}
projects / citadel.git / blobdiff