closer...
[citadel.git] / citadel / modules / network / serv_network.c
index 254a01a28c46c748a543cdc4f23cbcf815c59277..d36660e4b03cbda332f703a3820567949c431812 100644 (file)
@@ -2,15 +2,15 @@
  * This module handles shared rooms, inter-Citadel mail, and outbound
  * mailing list processing.
  *
- * Copyright (c) 2000-2012 by the citadel.org team
+ * Copyright (c) 2000-2016 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
@@ -18,7 +18,6 @@
  * 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.
- *
  */
 
 /*
@@ -72,7 +71,6 @@
 #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"
@@ -88,7 +86,9 @@ extern uint32_t hashlittle( const void *key, size_t length, uint32_t initval);
 
 typedef struct __roomlists {
        RoomProcList *rplist;
-}roomlists;
+} 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
@@ -97,54 +97,6 @@ typedef struct __roomlists {
 struct RoomProcList *rplist = NULL;
 
 
-
-/*
- * 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)
-{
-       StrBuf *msgid;
-       struct CitContext *CCC = CC;
-       time_t now;
-
-       /* Bail out if we can't generate a message ID */
-       if ((msg == NULL) || (msg->cm_fields['I'] == NULL) || (IsEmptyStr(msg->cm_fields['I'])))
-       {
-               return(0);
-       }
-
-       /* Generate the message ID */
-       msgid = NewStrBufPlain(msg->cm_fields['I'], -1);
-       if (haschar(ChrPtr(msgid), '@') == 0) {
-               StrBufAppendBufPlain(msgid, HKEY("@"), 0);
-               if (msg->cm_fields['N'] != NULL) {
-                       StrBufAppendBufPlain(msgid, msg->cm_fields['N'], -1, 0);
-               }
-               else {
-                       FreeStrBuf(&msgid);
-                       return(0);
-               }
-       }
-       now = time(NULL);
-       if (CheckIfAlreadySeen("Networker Import",
-                              msgid,
-                              now, 0,
-                              eCheckUpdate,
-                              CCC->cs_pid, 0) != 0)
-       {
-               FreeStrBuf(&msgid);
-               return(1);
-       }
-       FreeStrBuf(&msgid);
-
-       return(0);
-}
-
-
-
 /*
  * Send the *entire* contents of the current room to one specific network node,
  * ignoring anything we know about which messages have already undergone
@@ -159,64 +111,59 @@ int network_sync_to(char *target_node, long len)
        SpoolControl sc;
        int num_spooled = 0;
 
-       /* Grab the configuration line we're looking for */
-       begin_critical_section(S_NETCONFIGS);
+       /* Load the netconfig for this room */
        pRNCFG = CtdlGetNetCfgForRoom(CCC->room.QRnumber);
-       if ((pRNCFG == NULL) ||
-           (pRNCFG->NetConfigs[ignet_push_share] == NULL))
+       if (pRNCFG == NULL) {                                   // no netconfig at all?
+               return -1;
+       }
+       if (pRNCFG->NetConfigs[ignet_push_share] == NULL)       // no ignet push shares?
        {
+               FreeRoomNetworkStruct(&pRNCFG);
                return -1;
        }
 
-       pCfgLine = pRNCFG->NetConfigs[ignet_push_share];
-       while (pCfgLine != NULL)
+       /* Search for an ignet_oush_share configuration bearing the target node's name */
+       for (pCfgLine = pRNCFG->NetConfigs[ignet_push_share]; pCfgLine != NULL; pCfgLine = pCfgLine->next)
        {
                if (!strcmp(ChrPtr(pCfgLine->Value[0]), target_node))
                        break;
-               pCfgLine = pCfgLine->next;
        }
+
+       /* If we aren't sharing with that node, bail out */
        if (pCfgLine == NULL)
        {
+               FreeRoomNetworkStruct(&pRNCFG);
                return -1;
        }
 
+       /* If we got here, we're good to go ... make up a dummy spoolconfig and roll with it */
+
+       begin_critical_section(S_NETCONFIGS);
        memset(&sc, 0, sizeof(SpoolControl));
        memset(&OneRNCFG, 0, sizeof(OneRoomNetCfg));
        sc.RNCfg = &OneRNCFG;
        sc.RNCfg->NetConfigs[ignet_push_share] = DuplicateOneGenericCfgLine(pCfgLine);
-       sc.Users[ignet_push_share] = NewStrBufPlain(NULL,
-                                                   StrLength(pCfgLine->Value[0]) +
-                                                   StrLength(pCfgLine->Value[1]) + 10);
-       StrBufAppendBuf(sc.Users[ignet_push_share], 
-                       pCfgLine->Value[0],
-                       0);
-       StrBufAppendBufPlain(sc.Users[ignet_push_share], 
-                            HKEY(","),
-                            0);
-
-       StrBufAppendBuf(sc.Users[ignet_push_share], 
-                       pCfgLine->Value[1],
-                       0);
+       sc.Users[ignet_push_share] = NewStrBufPlain(NULL, (StrLength(pCfgLine->Value[0]) + StrLength(pCfgLine->Value[1]) + 10) );
+       StrBufAppendBuf(sc.Users[ignet_push_share], pCfgLine->Value[0], 0);
+       StrBufAppendBufPlain(sc.Users[ignet_push_share], HKEY(","), 0);
+       StrBufAppendBuf(sc.Users[ignet_push_share], pCfgLine->Value[1], 0);
        CalcListID(&sc);
-
        end_critical_section(S_NETCONFIGS);
 
        sc.working_ignetcfg = CtdlLoadIgNetCfg();
        sc.the_netmap = CtdlReadNetworkMap();
 
        /* Send ALL messages */
-       num_spooled = CtdlForEachMessage(MSGS_ALL, 0L, NULL, NULL, NULL,
-               network_spool_msg, &sc);
+       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 */
-       DeleteGenericCfgLine(NULL/*TODO*/, &sc.RNCfg->NetConfigs[ignet_push_share]);
+       DeleteGenericCfgLine(NULL, &sc.RNCfg->NetConfigs[ignet_push_share]);
 
        DeleteHash(&sc.working_ignetcfg);
        DeleteHash(&sc.the_netmap);
        free_spoolcontrol_struct_members(&sc);
 
-       QN_syslog(LOG_NOTICE, "Synchronized %d messages to <%s>\n",
-                 num_spooled, target_node);
+       QN_syslog(LOG_NOTICE, "Synchronized %d messages to <%s>", num_spooled, target_node);
        return(num_spooled);
 }
 
@@ -237,8 +184,7 @@ void cmd_nsyn(char *argbuf) {
                cprintf("%d Spooled %d messages.\n", CIT_OK, num_spooled);
        }
        else {
-               cprintf("%d No such room/node share exists.\n",
-                       ERROR + ROOM_NOT_FOUND);
+               cprintf("%d No such room/node share exists.\n", ERROR + ROOM_NOT_FOUND);
        }
 }
 
@@ -248,11 +194,14 @@ RoomProcList *CreateRoomProcListEntry(struct ctdlroom *qrbuf, OneRoomNetCfg *One
        struct RoomProcList *ptr;
 
        ptr = (struct RoomProcList *) malloc(sizeof (struct RoomProcList));
-       if (ptr == NULL) return NULL;
+       if (ptr == NULL) {
+               return NULL;
+       }
 
        ptr->namelen = strlen(qrbuf->QRname);
-       if (ptr->namelen > ROOMNAMELEN)
+       if (ptr->namelen > ROOMNAMELEN) {
                ptr->namelen = ROOMNAMELEN - 1;
+       }
 
        memcpy (ptr->name, qrbuf->QRname, ptr->namelen);
        ptr->name[ptr->namelen] = '\0';
@@ -265,8 +214,6 @@ RoomProcList *CreateRoomProcListEntry(struct ctdlroom *qrbuf, OneRoomNetCfg *One
 
        ptr->lcname[ptr->namelen] = '\0';
        ptr->key = hashlittle(ptr->lcname, ptr->namelen, 9872345);
-       ptr->lastsent = OneRNCFG->lastsent;
-       ptr->OneRNCfg = OneRNCFG;
        return ptr;
 }
 
@@ -278,8 +225,9 @@ void network_queue_interesting_rooms(struct ctdlroom *qrbuf, void *data, OneRoom
        struct RoomProcList *ptr;
        roomlists *RP = (roomlists*) data;
 
-       if (!HaveSpoolConfig(OneRNCfg))
+       if (!HaveSpoolConfig(OneRNCfg)) {
                return;
+       }
 
        ptr = CreateRoomProcListEntry(qrbuf, OneRNCfg);
 
@@ -293,30 +241,36 @@ void network_queue_interesting_rooms(struct ctdlroom *qrbuf, void *data, OneRoom
 /*
  * Batch up and send all outbound traffic from the current room
  */
-int network_room_handler (struct ctdlroom *qrbuf)
+int network_room_handler(struct ctdlroom *qrbuf)
 {
        struct RoomProcList *ptr;
-       OneRoomNetCfgRNCfg;
+       OneRoomNetCfg *RNCfg;
 
-       if (qrbuf->QRdefaultview == VIEW_QUEUE)
+       if (qrbuf->QRdefaultview == VIEW_QUEUE) {
                return 1;
+       }
 
        RNCfg = CtdlGetNetCfgForRoom(qrbuf->QRnumber);
-       if (RNCfg == NULL)
+       if (RNCfg == NULL) {
                return 1;
+       }
 
-       if (!HaveSpoolConfig(RNCfg))
+       if (!HaveSpoolConfig(RNCfg)) {
+               FreeRoomNetworkStruct(&RNCfg);
                return 1;
+       }
 
        ptr = CreateRoomProcListEntry(qrbuf, RNCfg);
-       if (ptr == NULL)
+       if (ptr == NULL) {
+               FreeRoomNetworkStruct(&RNCfg);
                return 1;
+       }
 
-       ptr->OneRNCfg = NULL;
        begin_critical_section(S_RPLIST);
        ptr->next = rplist;
        rplist = ptr;
        end_critical_section(S_RPLIST);
+       FreeRoomNetworkStruct(&RNCfg);
        return 1;
 }
 
@@ -341,116 +295,6 @@ void destroy_network_queue_room_locked (void)
 }
 
 
-
-/*
- * 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()
  * 
@@ -472,10 +316,11 @@ void network_do_queue(void)
         * Run the full set of processing tasks no more frequently
         * than once every n seconds
         */
-       if ( (time(NULL) - last_run) < config.c_net_freq ) {
+       if ( (time(NULL) - last_run) < CtdlGetConfigLong("c_net_freq") )
+       {
                full_processing = 0;
-               syslog(LOG_DEBUG, "Network full processing in %ld seconds.\n",
-                      config.c_net_freq - (time(NULL)- last_run)
+               syslog(LOG_DEBUG, "Network full processing in %ld seconds.",
+                      CtdlGetConfigLong("c_net_freq") - (time(NULL)- last_run)
                );
        }
 
@@ -484,21 +329,17 @@ void network_do_queue(void)
        RL.rplist = rplist;
        rplist = NULL;
        end_critical_section(S_RPLIST);
-///TODO hm, check whether we have a config at all here?
+
+       // TODO hm, check whether we have a config at all here?
        /* Load the IGnet Configuration into memory */
        working_ignetcfg = CtdlLoadIgNetCfg();
 
        /*
         * Load the network map and filter list into memory.
         */
-       if (!server_shutting_down)
+       if (!server_shutting_down) {
                the_netmap = CtdlReadNetworkMap();
-#if 0
-       /* filterlist isn't supported anymore
-       if (!server_shutting_down)
-               load_network_filter_list();
-       */
-#endif
+       }
 
        /* 
         * Go ahead and run the queue
@@ -528,10 +369,7 @@ void network_do_queue(void)
                        }
 
                        if (ptr->namelen > 0) {
-                               InspectQueuedRoom(&sc,
-                                                 ptr, 
-                                                 working_ignetcfg,
-                                                 the_netmap);
+                               InspectQueuedRoom(&sc, ptr, working_ignetcfg, the_netmap);
                        }
                        ptr = ptr->next;
                }
@@ -570,7 +408,7 @@ void network_do_queue(void)
                free(pMapStr);
        }
 
-       /* combine singe message files into one spool entry per remote node. */
+       /* combine single message files into one spool entry per remote node. */
        network_consolidate_spoolout(working_ignetcfg, the_netmap);
 
        /* shut down. */
@@ -585,17 +423,9 @@ void network_do_queue(void)
                last_run = time(NULL);
        }
        destroy_network_queue_room(RL.rplist);
-       SaveChangedConfigs();
-
 }
 
 
-
-
-
-
-
-
 void network_logout_hook(void)
 {
        CitContext *CCC = MyContext();
@@ -608,6 +438,8 @@ void network_logout_hook(void)
                CCC->net_node[0] = '\0';
        }
 }
+
+
 void network_cleanup_function(void)
 {
        struct CitContext *CCC = CC;
@@ -619,6 +451,79 @@ void network_cleanup_function(void)
 }
 
 
+int ignet_aftersave(struct CtdlMessage *msg, recptypes *recps)
+{
+       /* For IGnet mail, we have to save a new copy into the spooler for
+        * each recipient, with the R and D fields set to the recipient and
+        * destination-node.  This has two ugly side effects: all other
+        * recipients end up being unlisted in this recipient's copy of the
+        * message, and it has to deliver multiple messages to the same
+        * node.  We'll revisit this again in a year or so when everyone has
+        * a network spool receiver that can handle the new style messages.
+        */
+       if ((recps != NULL) && (recps->num_ignet > 0))
+       {
+               char *recipient;
+               int rv = 0;
+               struct ser_ret smr;
+               FILE *network_fp = NULL;
+               char submit_filename[128];
+               static int seqnum = 1;
+               int i;
+               char *hold_R, *hold_D, *RBuf, *DBuf;
+               long hrlen, hdlen, rblen, dblen, count, rlen;
+               CitContext *CCC = MyContext();
+
+               CM_GetAsField(msg, eRecipient, &hold_R, &hrlen);;
+               CM_GetAsField(msg, eDestination, &hold_D, &hdlen);;
+
+               count = num_tokens(recps->recp_ignet, '|');
+               rlen = strlen(recps->recp_ignet);
+               recipient = malloc(rlen + 1);
+               RBuf = malloc(rlen + 1);
+               DBuf = malloc(rlen + 1);
+               for (i=0; i<count; ++i) {
+                       extract_token(recipient, recps->recp_ignet, i, '|', rlen + 1);
+
+                       rblen = extract_token(RBuf, recipient, 0, '@', rlen + 1);
+                       dblen = extract_token(DBuf, recipient, 1, '@', rlen + 1);
+               
+                       CM_SetAsField(msg, eRecipient, &RBuf, rblen);;
+                       CM_SetAsField(msg, eDestination, &DBuf, dblen);;
+                       CtdlSerializeMessage(&smr, msg);
+                       if (smr.len > 0) {
+                               snprintf(submit_filename, sizeof submit_filename,
+                                        "%s/netmail.%04lx.%04x.%04x",
+                                        ctdl_netin_dir,
+                                        (long) getpid(),
+                                        CCC->cs_pid,
+                                        ++seqnum);
+
+                               network_fp = fopen(submit_filename, "wb+");
+                               if (network_fp != NULL) {
+                                       rv = fwrite(smr.ser, smr.len, 1, network_fp);
+                                       if (rv == -1) {
+                                               MSG_syslog(LOG_EMERG, "CtdlSubmitMsg(): Couldn't write network spool file: %s",
+                                                          strerror(errno));
+                                       }
+                                       fclose(network_fp);
+                               }
+                               free(smr.ser);
+                       }
+                       CM_GetAsField(msg, eRecipient, &RBuf, &rblen);;
+                       CM_GetAsField(msg, eDestination, &DBuf, &dblen);;
+               }
+               free(RBuf);
+               free(DBuf);
+               free(recipient);
+               CM_SetAsField(msg, eRecipient, &hold_R, hrlen);
+               CM_SetAsField(msg, eDestination, &hold_D, hdlen);
+               return 1;
+       }
+       return 0;
+}
+
+
 /*
  * Module entry point
  */
@@ -628,10 +533,13 @@ void SetNetQDebugEnabled(const int n)
        NetQDebugEnabled = n;
 }
 
+
 CTDL_MODULE_INIT(network)
 {
        if (!threading)
        {
+               CtdlRegisterMessageHook(ignet_aftersave, EVT_AFTERSAVE);
+
                CtdlFillSystemContext(&networker_spool_CC, "CitNetSpool");
                CtdlRegisterDebugFlagHook(HKEY("networkqueue"), SetNetQDebugEnabled, &NetQDebugEnabled);
                CtdlRegisterSessionHook(network_cleanup_function, EVT_STOP, PRIO_STOP + 30);