/*
- * 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
#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 "ctdl_module.h"
#include "netspool.h"
#include "netmail.h"
-
-void network_deliver_list(struct CtdlMessage *msg, SpoolControl *sc, const char *RoomName);
-
-void aggregate_recipients(StrBuf **recps, RoomNetCfg Which, OneRoomNetCfg *OneRNCfg, long nSegments)
-{
- int i;
- size_t recps_len = 0;
- RoomNetCfgLine *nptr;
- struct CitContext *CCC = CC;
-
- *recps = NULL;
- /*
- * Figure out how big a buffer we need to allocate
- */
- for (nptr = OneRNCfg->NetConfigs[Which]; nptr != NULL; nptr = nptr->next) {
- recps_len = recps_len + StrLength(nptr->Value[0]) + 2;
- }
-
- /* Nothing todo... */
- if (recps_len == 0)
- return;
-
- *recps = NewStrBufPlain(NULL, recps_len);
-
- if (*recps == NULL) {
- QN_syslog(LOG_EMERG,
- "Cannot allocate %ld bytes for recps...\n",
- (long)recps_len);
- abort();
- }
-
- /* Each recipient */
- for (nptr = OneRNCfg->NetConfigs[Which]; nptr != NULL; nptr = nptr->next) {
- if (nptr != OneRNCfg->NetConfigs[Which]) {
- for (i = 0; i < nSegments; i++)
- StrBufAppendBufPlain(*recps, HKEY(","), i);
- }
- StrBufAppendBuf(*recps, nptr->Value[0], 0);
- if (Which == ignet_push_share)
- {
- StrBufAppendBufPlain(*recps, HKEY(","), 0);
- StrBufAppendBuf(*recps, nptr->Value[1], 0);
-
- }
- }
-}
-
-static void ListCalculateSubject(struct CtdlMessage *msg)
-{
- struct CitContext *CCC = CC;
- StrBuf *Subject, *FlatSubject;
- int rlen;
- char *pCh;
-
- if (CM_IsEmpty(msg, eMsgSubject)) {
- Subject = NewStrBufPlain(HKEY("(no subject)"));
- }
- else {
- Subject = NewStrBufPlain(
- msg->cm_fields[eMsgSubject], -1);
- }
- FlatSubject = NewStrBufPlain(NULL, StrLength(Subject));
- StrBuf_RFC822_to_Utf8(FlatSubject, Subject, NULL, NULL);
-
- rlen = strlen(CCC->room.QRname);
- pCh = strstr(ChrPtr(FlatSubject), CCC->room.QRname);
- if ((pCh == NULL) ||
- (*(pCh + rlen) != ']') ||
- (pCh == ChrPtr(FlatSubject)) ||
- (*(pCh - 1) != '[')
- )
- {
- StrBuf *tmp;
- StrBufPlain(Subject, HKEY("["));
- StrBufAppendBufPlain(Subject,
- CCC->room.QRname,
- rlen, 0);
- StrBufAppendBufPlain(Subject, HKEY("] "), 0);
- StrBufAppendBuf(Subject, FlatSubject, 0);
- /* so we can free the right one swap them */
- tmp = Subject;
- Subject = FlatSubject;
- FlatSubject = tmp;
- StrBufRFC2047encode(&Subject, FlatSubject);
- }
-
- CM_SetAsFieldSB(msg, eMsgSubject, &Subject);
-
- FreeStrBuf(&FlatSubject);
-}
-
-/*
- * Deliver digest messages
- */
-void network_deliver_digest(SpoolControl *sc)
-{
- struct CitContext *CCC = CC;
- long len;
- char buf[SIZ];
- char *pbuf;
- struct CtdlMessage *msg = NULL;
- long msglen;
- struct recptypes *valid;
- char bounce_to[256];
-
- if (sc->Users[listrecp] == NULL)
- return;
-
- 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;
-
- CM_SetFieldLONG(msg, eTimestamp, time(NULL));
- CM_SetField(msg, eAuthor, CCC->room.QRname, strlen(CCC->room.QRname));
- len = snprintf(buf, sizeof buf, "[%s]", CCC->room.QRname);
- CM_SetField(msg, eMsgSubject, buf, len);
-
- CM_SetField(msg, erFc822Addr, SKEY(sc->Users[roommailalias]));
- CM_SetField(msg, eRecipient, SKEY(sc->Users[roommailalias]));
-
- /* Set the 'List-ID' header */
- CM_SetField(msg, eListID, SKEY(sc->ListID));
-
- /*
- * Go fetch the contents of the digest
- */
- fseek(sc->digestfp, 0L, SEEK_END);
- msglen = ftell(sc->digestfp);
-
- pbuf = malloc(msglen + 1);
- fseek(sc->digestfp, 0L, SEEK_SET);
- fread(pbuf, (size_t)msglen, 1, sc->digestfp);
- pbuf[msglen] = '\0';
- CM_SetAsField(msg, eMesageText, &pbuf, msglen);
- fclose(sc->digestfp);
- sc->digestfp = NULL;
-
- /* Now generate the delivery instructions */
- if (sc->Users[listrecp] == NULL)
- return;
-
- /* 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(ChrPtr(sc->Users[listrecp]), NULL, 0);
- if (valid != NULL) {
- valid->bounce_to = strdup(bounce_to);
- valid->envelope_from = strdup(bounce_to);
- CtdlSubmitMsg(msg, valid, NULL, 0);
- }
- CM_Free(msg);
- free_recipients(valid);
-}
-
-
-void network_process_digest(SpoolControl *sc, struct CtdlMessage *omsg, long *delete_after_send)
-{
-
- struct CtdlMessage *msg = NULL;
-
- /*
- * Process digest recipients
- */
- if ((sc->Users[digestrecp] == NULL)||
- (sc->digestfp == NULL))
- return;
-
- msg = CM_Duplicate(omsg);
- if (msg != NULL) {
- fprintf(sc->digestfp,
- " -----------------------------------"
- "------------------------------------"
- "-------\n");
- fprintf(sc->digestfp, "From: ");
- if (!CM_IsEmpty(msg, eAuthor)) {
- fprintf(sc->digestfp,
- "%s ",
- msg->cm_fields[eAuthor]);
- }
- if (!CM_IsEmpty(msg, erFc822Addr)) {
- fprintf(sc->digestfp,
- "<%s> ",
- msg->cm_fields[erFc822Addr]);
- }
- else if (!CM_IsEmpty(msg, eNodeName)) {
- fprintf(sc->digestfp,
- "@%s ",
- msg->cm_fields[eNodeName]);
- }
- fprintf(sc->digestfp, "\n");
- if (!CM_IsEmpty(msg, eMsgSubject)) {
- fprintf(sc->digestfp,
- "Subject: %s\n",
- msg->cm_fields[eMsgSubject]);
- }
-
- 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;
- CM_Free(msg);
- }
-}
-
-
-void network_process_list(SpoolControl *sc, struct CtdlMessage *omsg, long *delete_after_send)
-{
- struct CtdlMessage *msg = NULL;
-
- /*
- * Process mailing list recipients
- */
- if (sc->Users[listrecp] == NULL)
- return;
-
- /* create our own copy of the message.
- * We're going to need to modify it
- * in order to insert the [list name] in it, etc.
- */
-
- msg = CM_Duplicate(omsg);
-
-
- CM_SetField(msg, eListID, SKEY(sc->Users[roommailalias]));
-
- /* if there is no other recipient, Set the recipient
- * of the list message to the email address of the
- * room itself.
- */
- if (CM_IsEmpty(msg, eRecipient))
- {
- CM_SetField(msg, eRecipient, SKEY(sc->Users[roommailalias]));
- }
-
- /* Set the 'List-ID' header */
- CM_SetField(msg, eListID, SKEY(sc->ListID));
-
-
- /* Prepend "[List name]" to the subject */
- ListCalculateSubject(msg);
-
- /* Handle delivery */
- network_deliver_list(msg, sc, CC->room.QRname);
- CM_Free(msg);
-}
-
-/*
- * Deliver list messages to everyone on the list ... efficiently
- */
-void network_deliver_list(struct CtdlMessage *msg, SpoolControl *sc, const char *RoomName)
-{
- struct recptypes *valid;
- char bounce_to[256];
-
- /* Don't do this if there were no recipients! */
- if (sc->Users[listrecp] == NULL)
- return;
-
- /* Now generate the delivery instructions */
-
- /* 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(ChrPtr(sc->Users[listrecp]), NULL, 0);
- if (valid != NULL) {
- valid->bounce_to = strdup(bounce_to);
- valid->envelope_from = strdup(bounce_to);
- valid->sending_room = strdup(RoomName);
- CtdlSubmitMsg(msg, valid, NULL, 0);
- free_recipients(valid);
- }
- /* Do not call CM_Free(msg) here; the caller will free it. */
-}
-
-
-void network_process_participate(SpoolControl *sc, struct CtdlMessage *omsg, long *delete_after_send)
-{
- struct CtdlMessage *msg = NULL;
- int ok_to_participate = 0;
- StrBuf *Buf = NULL;
- struct recptypes *valid;
-
- /*
- * Process client-side list participations for this room
- */
- if (sc->Users[participate] == NULL)
- return;
-
- msg = CM_Duplicate(omsg);
-
- /* 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 (!CM_IsEmpty(msg, eNodeName)) {
- if (!strcasecmp(msg->cm_fields[eNodeName],
- config.c_nodename)) {
- ok_to_participate = 1;
- }
-
- Buf = NewStrBufPlain(msg->cm_fields[eNodeName], -1);
- if (CtdlIsValidNode(NULL,
- NULL,
- Buf,
- sc->working_ignetcfg,
- sc->the_netmap) == 0)
- {
- ok_to_participate = 1;
- }
- }
- if (ok_to_participate)
- {
- /* 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.
- */
- CM_SetField(msg, erFc822Addr, SKEY(sc->Users[roommailalias]));
-
- valid = validate_recipients(ChrPtr(sc->Users[participate]) , NULL, 0);
-
- CM_SetField(msg, eRecipient, SKEY(sc->Users[roommailalias]));
- CtdlSubmitMsg(msg, valid, "", 0);
- free_recipients(valid);
- }
- FreeStrBuf(&Buf);
- CM_Free(msg);
-}
-
-void network_process_ignetpush(SpoolControl *sc, struct CtdlMessage *omsg, long *delete_after_send)
-{
- StrBuf *Recipient;
- StrBuf *RemoteRoom;
- const char *Pos = NULL;
- struct CtdlMessage *msg = NULL;
- struct CitContext *CCC = CC;
- struct ser_ret sermsg;
- char buf[SIZ];
- char filename[PATH_MAX];
- FILE *fp;
- StrBuf *Buf = NULL;
- int i;
- int bang = 0;
- int send = 1;
-
- if (sc->Users[ignet_push_share] == NULL)
- return;
-
- /*
- * Process IGnet push shares
- */
- msg = CM_Duplicate(omsg);
-
- /* Prepend our node name to the Path field whenever
- * sending a message to another IGnet node
- */
- Netmap_AddMe(msg, HKEY("username"));
-
- /*
- * Determine if this message is set to be deleted
- * after sending out on the network
- */
- if (!CM_IsEmpty(msg, eSpecialField)) {
- if (!strcasecmp(msg->cm_fields[eSpecialField], "CANCEL")) {
- *delete_after_send = 1;
- }
- }
-
- /* Now send it to every node */
- Recipient = NewStrBufPlain(NULL, StrLength(sc->Users[ignet_push_share]));
- RemoteRoom = NewStrBufPlain(NULL, StrLength(sc->Users[ignet_push_share]));
- while ((Pos != StrBufNOTNULL) &&
- StrBufExtract_NextToken(Recipient, sc->Users[ignet_push_share], &Pos, ','))
- {
- StrBufExtract_NextToken(RemoteRoom, sc->Users[ignet_push_share], &Pos, ',');
- send = 1;
- NewStrBufDupAppendFlush(&Buf, Recipient, NULL, 1);
-
- /* Check for valid node name */
- if (CtdlIsValidNode(NULL,
- NULL,
- Buf,
- sc->working_ignetcfg,
- sc->the_netmap) != 0)
- {
- QN_syslog(LOG_ERR,
- "Invalid node <%s>\n",
- ChrPtr(Recipient));
-
- send = 0;
- }
-
- /* Check for split horizon */
- QN_syslog(LOG_DEBUG, "Path is %s\n", msg->cm_fields[eMessagePath]);
- bang = num_tokens(msg->cm_fields[eMessagePath], '!');
- if (bang > 1) {
- for (i=0; i<(bang-1); ++i) {
- extract_token(buf,
- msg->cm_fields[eMessagePath],
- i, '!',
- sizeof buf);
-
- QN_syslog(LOG_DEBUG, "Compare <%s> to <%s>\n",
- buf, ChrPtr(Recipient)) ;
- if (!strcasecmp(buf, ChrPtr(Recipient))) {
- send = 0;
- break;
- }
- }
-
- QN_syslog(LOG_INFO,
- " %sSending to %s\n",
- (send)?"":"Not ",
- ChrPtr(Recipient));
- }
-
- /* 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 (StrLength(RemoteRoom) > 0) {
- CM_SetField(msg, eRemoteRoom, SKEY(RemoteRoom));
- }
- else {
- CM_SetField(msg, eRemoteRoom, CCC->room.QRname, strlen(CCC->room.QRname));
- }
-
- /* serialize it for transmission */
- CtdlSerializeMessage(&sermsg, msg);
- if (sermsg.len > 0) {
-
- /* write it to a spool file */
- snprintf(filename,
- sizeof(filename),
- "%s/%s@%lx%x",
- ctdl_netout_dir,
- ChrPtr(Recipient),
- time(NULL),
- rand()
- );
-
- QN_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 {
- QN_syslog(LOG_ERR,
- "%s: %s\n",
- filename,
- strerror(errno));
- }
-
- /* free the serialized version */
- free(sermsg.ser);
- }
- }
- }
- FreeStrBuf(&Buf);
- FreeStrBuf(&Recipient);
- FreeStrBuf(&RemoteRoom);
- CM_Free(msg);
-}
-
-
-/*
- * Spools out one message from the list.
- */
-void network_spool_msg(long msgnum,
- void *userdata)
-{
- struct CitContext *CCC = CC;
- struct CtdlMessage *msg = NULL;
- long delete_after_send = 0; /* Set to 1 to delete after spooling */
- SpoolControl *sc;
-
- sc = (SpoolControl *)userdata;
-
- msg = CtdlFetchMessage(msgnum, 1);
-
- if (msg == NULL)
- {
- QN_syslog(LOG_ERR,
- "failed to load Message <%ld> from disk\n",
- msgnum);
- return;
- }
- network_process_list(sc, msg, &delete_after_send);
- network_process_digest(sc, msg, &delete_after_send);
- network_process_participate(sc, msg, &delete_after_send);
- network_process_ignetpush(sc, msg, &delete_after_send);
-
- CM_Free(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, "");
- }
-}
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