From f989171c26364cc569f8704c6c466a0ed7343fe1 Mon Sep 17 00:00:00 2001 From: Art Cancro Date: Mon, 22 Jan 2018 21:30:29 -0500 Subject: [PATCH] Revert "aagh" This reverts commit b7728265dabe592f9e4a8e83cb0df4accb6cea21. --- citadel/modules/network/serv_network.c | 536 +++++++++++++++++++++++++ 1 file changed, 536 insertions(+) create mode 100644 citadel/modules/network/serv_network.c diff --git a/citadel/modules/network/serv_network.c b/citadel/modules/network/serv_network.c new file mode 100644 index 000000000..41b299a29 --- /dev/null +++ b/citadel/modules/network/serv_network.c @@ -0,0 +1,536 @@ +/* + * This module handles shared rooms, inter-Citadel mail, and outbound + * mailing list processing. + * + * Copyright (c) 2000-2017 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 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 + * two threads work on the netconfigs files at the same time. Since we do + * 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. + */ + +/* + * Duration of time (in seconds) after which pending list subscribe/unsubscribe + * requests that have not been confirmed will be deleted. + */ +#define EXP 259200 /* three days */ + +#include "sysdep.h" +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#if TIME_WITH_SYS_TIME +# include +# include +#else +# if HAVE_SYS_TIME_H +# include +# else +# include +# endif +#endif +#ifdef HAVE_SYSCALL_H +# include +#else +# if HAVE_SYS_SYSCALL_H +# include +# endif +#endif + +#include +#include +#include +#include +#include "citadel.h" +#include "server.h" +#include "citserver.h" +#include "support.h" +#include "config.h" +#include "user_ops.h" +#include "database.h" +#include "msgbase.h" +#include "internet_addressing.h" +#include "serv_network.h" +#include "clientsocket.h" +#include "citadel_dirs.h" +#include "threads.h" +#include "context.h" +#include "ctdl_module.h" +#include "netspool.h" +#include "netmail.h" + +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; +} 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; + + +/* + * 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; + OneRoomNetCfg OneRNCFG; + OneRoomNetCfg *pRNCFG; + const RoomNetCfgLine *pCfgLine; + SpoolControl sc; + int num_spooled = 0; + + /* Load the netconfig for this room */ + pRNCFG = CtdlGetNetCfgForRoom(CCC->room.QRnumber); + if (pRNCFG == NULL) { // no netconfig at all? + return -1; + } + if (pRNCFG->NetConfigs[ignet_push_share] == NULL) // no ignet push shares? + { + FreeRoomNetworkStruct(&pRNCFG); + return -1; + } + + /* 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; + } + + /* 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); + 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); + + /* Concise cleanup because we know there's only one node in the sc */ + DeleteGenericCfgLine(NULL, &sc.RNCfg->NetConfigs[ignet_push_share]); + + DeleteHash(&sc.working_ignetcfg); + DeleteHash(&sc.the_netmap); + free_spoolcontrol_struct_members(&sc); + + syslog(LOG_NOTICE, "network: synchronized %d messages to <%s>", num_spooled, target_node); + return(num_spooled); +} + + +/* + * 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); + 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); + } +} + +RoomProcList *CreateRoomProcListEntry(struct ctdlroom *qrbuf, OneRoomNetCfg *OneRNCFG) +{ + int i; + struct RoomProcList *ptr; + + ptr = (struct RoomProcList *) malloc(sizeof (struct RoomProcList)); + if (ptr == NULL) { + return NULL; + } + + 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); + return ptr; +} + +/* + * Batch up and send all outbound traffic from the current room + */ +void network_queue_interesting_rooms(struct ctdlroom *qrbuf, void *data, OneRoomNetCfg *OneRNCfg) +{ + struct RoomProcList *ptr; + roomlists *RP = (roomlists*) data; + + if (!HaveSpoolConfig(OneRNCfg)) { + return; + } + + ptr = CreateRoomProcListEntry(qrbuf, OneRNCfg); + + if (ptr != NULL) + { + ptr->next = RP->rplist; + RP->rplist = ptr; + } +} + +/* + * Batch up and send all outbound traffic from the current room + */ +int network_room_handler(struct ctdlroom *qrbuf) +{ + struct RoomProcList *ptr; + OneRoomNetCfg *RNCfg; + + if (qrbuf->QRdefaultview == VIEW_QUEUE) { + return 1; + } + + RNCfg = CtdlGetNetCfgForRoom(qrbuf->QRnumber); + if (RNCfg == NULL) { + return 1; + } + + if (!HaveSpoolConfig(RNCfg)) { + FreeRoomNetworkStruct(&RNCfg); + return 1; + } + + ptr = CreateRoomProcListEntry(qrbuf, RNCfg); + if (ptr == NULL) { + FreeRoomNetworkStruct(&RNCfg); + return 1; + } + + begin_critical_section(S_RPLIST); + ptr->next = rplist; + rplist = ptr; + end_critical_section(S_RPLIST); + FreeRoomNetworkStruct(&RNCfg); + return 1; +} + +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); +} + + +/* + * network_do_queue() + * + * Run through the rooms doing various types of network stuff. + */ +void network_do_queue(void) +{ + static time_t last_run = 0L; + int full_processing = 1; + HashList *working_ignetcfg; + HashList *the_netmap = NULL; + int netmap_changed = 0; + roomlists RL; + SpoolControl *sc = NULL; + SpoolControl *pSC; + + /* + * Run the full set of processing tasks no more frequently + * than once every n seconds + */ + if ( (time(NULL) - last_run) < CtdlGetConfigLong("c_net_freq") ) + { + full_processing = 0; + syslog(LOG_DEBUG, "network: full processing in %ld seconds.", CtdlGetConfigLong("c_net_freq") - (time(NULL)- last_run)); + } + + become_session(&networker_spool_CC); + begin_critical_section(S_RPLIST); + RL.rplist = rplist; + rplist = NULL; + end_critical_section(S_RPLIST); + + // 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) { + the_netmap = CtdlReadNetworkMap(); + } + + /* + * Go ahead and run the queue + */ + if (full_processing && !server_shutting_down) { + syslog(LOG_DEBUG, "network: loading outbound queue"); + CtdlForEachNetCfgRoom(network_queue_interesting_rooms, &RL); + } + + if ((RL.rplist != NULL) && (!server_shutting_down)) { + RoomProcList *ptr, *cmp; + ptr = RL.rplist; + syslog(LOG_DEBUG, "network: running outbound queue"); + while (ptr != NULL && !server_shutting_down) { + + cmp = ptr->next; + /* filter duplicates from the list... */ + 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) { + InspectQueuedRoom(&sc, ptr, working_ignetcfg, the_netmap); + } + ptr = ptr->next; + } + } + + + pSC = sc; + while (pSC != NULL) + { + network_spoolout_room(pSC); + pSC = pSC->next; + } + + pSC = sc; + while (pSC != NULL) + { + sc = pSC->next; + free_spoolcontrol_struct(&pSC); + pSC = sc; + } + /* If there is anything in the inbound queue, process it */ + if (!server_shutting_down) { + network_do_spoolin(working_ignetcfg, the_netmap, &netmap_changed); + } + + /* Save the network map back to disk */ + if (netmap_changed) { + StrBuf *MapStr = CtdlSerializeNetworkMap(the_netmap); + char *pMapStr = SmashStrBuf(&MapStr); + CtdlPutSysConfig(IGNETMAP, pMapStr); + free(pMapStr); + } + + /* combine single message files into one spool entry per remote node. */ + network_consolidate_spoolout(working_ignetcfg, the_netmap); + + /* shut down. */ + + DeleteHash(&the_netmap); + + DeleteHash(&working_ignetcfg); + + syslog(LOG_DEBUG, "network: queue run completed"); + + if (full_processing) { + last_run = time(NULL); + } + destroy_network_queue_room(RL.rplist); +} + + +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'; + } +} + + +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; irecp_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) { + syslog(LOG_EMERG, "network: 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 + */ + + +CTDL_MODULE_INIT(network) +{ + if (!threading) + { + CtdlRegisterMessageHook(ignet_aftersave, EVT_AFTERSAVE); + CtdlFillSystemContext(&networker_spool_CC, "CitNetSpool"); + 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"; +} -- 2.30.2