551 lines
14 KiB
C
551 lines
14 KiB
C
/*****************************************************************************
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*
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* $Id$
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* Purpose ...............: Post echomail message.
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*
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*****************************************************************************
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* Copyright (C) 1997-2002
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*
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* Michiel Broek FIDO: 2:280/2802
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* Beekmansbos 10
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* 1971 BV IJmuiden
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* the Netherlands
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*
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* This file is part of MBSE BBS.
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*
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* This BBS is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2, or (at your option) any
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* later version.
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*
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* MBSE BBS is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with MBSE BBS; see the file COPYING. If not, write to the Free
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* Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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*****************************************************************************/
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#include "../config.h"
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#include "../lib/libs.h"
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#include "../lib/memwatch.h"
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#include "../lib/structs.h"
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#include "../lib/users.h"
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#include "../lib/records.h"
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#include "../lib/common.h"
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#include "../lib/clcomm.h"
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#include "../lib/msg.h"
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#include "../lib/msgtext.h"
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#include "../lib/dbcfg.h"
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#include "../lib/dbnode.h"
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#include "../lib/dbmsgs.h"
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#include "../lib/dbdupe.h"
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#include "../lib/dbuser.h"
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#include "../lib/dbftn.h"
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#include "ftn2rfc.h"
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#include "postecho.h"
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#include "storeecho.h"
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#include "addpkt.h"
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#include "rollover.h"
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#include "qualify.h"
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/*
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* External declarations
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*/
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extern int do_quiet; /* No tty output */
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extern int do_unsec; /* Toss unsecure */
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extern int check_dupe; /* Check dupes */
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extern time_t t_start; /* Reference time */
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extern int echo_in; /* Echomail processed */
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extern int echo_out; /* Echomail forwarded */
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extern int echo_bad; /* Bad echomail */
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#define MAXPATH 73
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#define MAXSEEN 70
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int EchoOut(fidoaddr, char *, char *, char *, FILE *, int, int, time_t);
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/*
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* Add echomail mesage to the queue.
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*/
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int EchoOut(fidoaddr aka, char *toname, char *fromname, char *subj, FILE *fp, int flags, int cost, time_t date)
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{
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char *buf, ext[4];
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FILE *qp;
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faddr *From, *To;
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int rc;
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/*
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* Pack flavor for echomail packets.
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*/
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memset(&ext, 0, sizeof(ext));
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if (nodes.PackNetmail)
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sprintf(ext, (char *)"qqq");
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else if (nodes.Crash)
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sprintf(ext, (char *)"ccc");
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else if (nodes.Hold)
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sprintf(ext, (char *)"hhh");
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else
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sprintf(ext, (char *)"nnn");
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if ((qp = OpenPkt(msgs.Aka, aka, (char *)ext)) == NULL) {
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WriteError("EchoOut(): OpenPkt failed");
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return 1;
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}
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From = fido2faddr(msgs.Aka);
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To = fido2faddr(aka);
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rc = AddMsgHdr(qp, From, To, flags, cost, date, toname, fromname, subj);
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tidy_faddr(To);
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tidy_faddr(From);
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if (rc) {
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WriteError("EchoOut(): AddMsgHdr failed");
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return 1;
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}
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rewind(fp);
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buf = calloc(2049, sizeof(char));
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while ((fgets(buf, 2048, fp)) != NULL) {
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Striplf(buf);
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fprintf(qp, "%s\r", buf);
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}
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free(buf);
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putc(0, qp);
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fsync(fileno(qp));
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fclose(qp);
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return 0;
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}
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/*
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* Post echomail message, forward if needed.
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* pkt_from, from, to, subj, orig, mdate, flags, cost, file
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* The msgs record must be in memory.
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*
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* 1 - Cannot open message base.
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* 4 - Rejected echomail message.
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*
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* For echomail, the crc32 is calculated over the ^AREA kludge, subject,
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* message date, origin line, message id.
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*/
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int postecho(faddr *p_from, faddr *f, faddr *t, char *orig, char *subj, time_t mdate, int flags, int cost, FILE *fp, int tonews)
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{
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char *buf, *msgid = NULL, *reply = NULL, *p, *q, sbe[16];
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int First = TRUE, rc = 0, i, kludges = TRUE, dupe = FALSE, bad = TRUE, seenlen, oldnet;
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faddr *Faddr;
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unsigned long crc;
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sysconnect Link;
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fa_list *sbl = NULL, *ptl = NULL, *tmpl;
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qualify *qal = NULL, *tmpq;
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FILE *nfp, *qp;
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time_t ddate;
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memset(&Link, 0, sizeof(Link));
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crc = 0xffffffff;
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echo_in++;
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/*
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* p_from is set for tossed echomail, it is NULL for local posted echomail and gated news.
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*/
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if (p_from) {
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while (GetMsgSystem(&Link, First)) {
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First = FALSE;
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if ((p_from->zone == Link.aka.zone) && (p_from->net == Link.aka.net) && (p_from->node == Link.aka.node)) {
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bad = FALSE;
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break;
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}
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}
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if (bad && (msgs.UnSecure || do_unsec)) {
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bad = FALSE;
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memset(&Link, 0, sizeof(Link));
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}
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if (bad) {
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Syslog('+', "Node %s not connected to area %s", ascfnode(p_from, 0x1f), msgs.Tag);
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echo_bad++;
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return 4;
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}
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if (Link.cutoff && !bad) {
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Syslog('+', "Echomail from %s in %s refused, cutoff", ascfnode(p_from, 0x1f), msgs.Tag);
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bad = TRUE;
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echo_bad++;
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return 4;
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}
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if (!Link.receivefrom && !bad) {
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Syslog('+', "Echomail from %s in %s refused, read only", ascfnode(p_from, 0x1f), msgs.Tag);
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bad = TRUE;
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echo_bad++;
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return 4;
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}
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} else {
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/*
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* Fake the zone entry to be our own zone, this prevents
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* zonegate behaviour. It's also not a bad message yet.
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*/
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Link.aka.zone = msgs.Aka.zone;
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bad = FALSE;
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}
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if (CFG.toss_old && ((t_start - mdate) / 86400) > CFG.toss_old) {
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Syslog('+', "Rejecting msg: too old, %s", rfcdate(mdate));
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bad = TRUE;
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echo_bad++;
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return 4;
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}
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/*
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* Read the message for kludges we need.
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*/
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buf = calloc(2049, sizeof(char));
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First = TRUE;
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rewind(fp);
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while ((fgets(buf, 2048, fp)) != NULL) {
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Striplf(buf);
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if (First && (!strncmp(buf, "AREA:", 5))) {
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crc = upd_crc32(buf, crc, strlen(buf));
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First = FALSE;
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}
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if (!strncmp(buf, "\001MSGID: ", 8))
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msgid = xstrcpy(buf + 8);
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if (!strncmp(buf, "\001REPLY: ", 8))
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reply = xstrcpy(buf + 8);
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if (!strncmp(buf, "SEEN-BY:", 8)) {
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if (Link.aka.zone == msgs.Aka.zone) {
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p = xstrcpy(buf + 9);
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fill_list(&sbl, p, NULL);
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free(p);
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} else
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Syslog('m', "Strip zone SB lines");
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}
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if (!strncmp(buf, "\001PATH:", 6)) {
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p = xstrcpy(buf + 7);
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fill_path(&ptl, p);
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free(p);
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}
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} /* end of checking kludges */
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/*
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* Further dupe checking.
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*/
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crc = upd_crc32(subj, crc, strlen(subj));
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if (orig == NULL)
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Syslog('!', "No origin line found");
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else
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crc = upd_crc32(orig, crc, strlen(orig));
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/*
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* Some tossers don't bother the seconds in the message, also some
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* rescanning software changes the seconds of a message. Do the
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* timestamp check without the seconds.
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*/
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ddate = mdate - (mdate % 60);
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Syslog('m', "dtime=%d, mtime=%d", ddate, mdate);
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crc = upd_crc32((char *)&ddate, crc, sizeof(ddate));
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// crc = upd_crc32((char *)&mdate, crc, sizeof(mdate));
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if (msgid != NULL) {
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crc = upd_crc32(msgid, crc, strlen(msgid));
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} else {
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if (check_dupe) {
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/*
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* If a MSGID is missing it is possible that dupes from some offline
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* readers slip through because these readers use the same date for
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* each message. In this case the message text is included in the
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* dupecheck. Redy Rodriguez.
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*/
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rewind(fp);
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while ((fgets(buf, 2048, fp)) != NULL) {
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Striplf(buf);
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if (strncmp(buf, "---", 3) == 0)
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break;
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if ((strncmp(buf, "\001", 1) != 0 ) && (strncmp(buf,"AREA:",5) != 0 ))
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crc = upd_crc32(buf, crc , strlen(buf));
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}
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}
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}
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if (check_dupe)
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dupe = CheckDupe(crc, D_ECHOMAIL, CFG.toss_dupes);
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else
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dupe = FALSE;
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if (!dupe && !msgs.UnSecure && !do_unsec) {
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/*
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* Check if the message is for us. Don't check point address,
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* echomail messages don't have point destination set.
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*/
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if ((msgs.Aka.zone != t->zone) || (msgs.Aka.net != t->net) || (msgs.Aka.node != t->node)) {
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bad = TRUE;
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/*
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* If we are a hub or host and have all our echomail
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* connected to the hub/host aka, echomail from points
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* under a nodenumber aka isn't accepted. The match
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* must be further tested.
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*/
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if ((msgs.Aka.zone == t->zone) && (msgs.Aka.net == t->net)) {
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for (i = 0; i < 40; i++) {
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if ((CFG.akavalid[i]) && (CFG.aka[i].zone == t->zone) &&
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(CFG.aka[i].net == t->net) && (CFG.aka[i].node == t->node))
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bad = FALSE; /* Undo the result */
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}
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}
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}
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if (bad) {
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echo_bad++;
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WriteError("Msg in %s not for us (%s) but for %s", msgs.Tag, aka2str(msgs.Aka), ascfnode(t,0x1f));
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free(buf);
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if (msgid)
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free(msgid);
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if (reply)
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free(reply);
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return 4;
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}
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}
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/*
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* The echomail message is accepted for post/forward/gate
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*/
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if (!dupe) {
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if (msgs.Aka.zone != Link.aka.zone) {
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/*
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* If it is a zonegated echomailmessage the SEEN-BY lines
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* are stripped off including that of the other zone's
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* gate. Add the gate's aka to the SEEN-BY
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*/
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Syslog('m', "Gated echomail, clean SB");
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tidy_falist(&sbl);
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sprintf(sbe, "%u/%u", Link.aka.net, Link.aka.node);
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Syslog('m', "Add gate SB %s", sbe);
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fill_list(&sbl, sbe, NULL);
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}
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/*
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* Add more aka's to SEENBY if in the same zone as our system.
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* When ready filter dupe's, there is at least one.
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*/
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for (i = 0; i < 40; i++) {
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if (CFG.akavalid[i] && (msgs.Aka.zone == CFG.aka[i].zone) && (CFG.aka[i].point == 0) &&
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!((msgs.Aka.net == CFG.aka[i].net) && (msgs.Aka.node == CFG.aka[i].node))) {
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sprintf(sbe, "%u/%u", CFG.aka[i].net, CFG.aka[i].node);
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fill_list(&sbl, sbe, NULL);
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}
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}
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uniq_list(&sbl);
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}
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/*
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* Add our system to the path for later export.
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*/
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sprintf(sbe, "%u/%u", msgs.Aka.net, msgs.Aka.node);
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fill_path(&ptl, sbe);
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uniq_list(&ptl); /* remove possible duplicate own aka */
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/*
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* Build a list of qualified systems to receive this message.
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* Complete the SEEN-BY lines.
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*/
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First = TRUE;
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while (GetMsgSystem(&Link, First)) {
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First = FALSE;
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if ((Link.aka.zone) && (Link.sendto) && (!Link.pause) && (!Link.cutoff)) {
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Faddr = fido2faddr(Link.aka);
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if (p_from == NULL) {
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fill_qualify(&qal, Link.aka, FALSE, in_list(Faddr, &sbl, FALSE));
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} else {
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fill_qualify(&qal, Link.aka, ((p_from->zone == Link.aka.zone) &&
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(p_from->net == Link.aka.net) && (p_from->node == Link.aka.node) &&
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(p_from->point == Link.aka.point)), in_list(Faddr, &sbl, FALSE));
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}
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tidy_faddr(Faddr);
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}
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}
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/*
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* Add SEEN-BY for nodes qualified to receive this message.
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* When ready, filter the dupes and sort the SEEN-BY entries.
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*/
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for (tmpq = qal; tmpq; tmpq = tmpq->next) {
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if (tmpq->send) {
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sprintf(sbe, "%u/%u", tmpq->aka.net, tmpq->aka.node);
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fill_list(&sbl, sbe, NULL);
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}
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}
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uniq_list(&sbl);
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sort_list(&sbl);
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/*
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* Create a new tmpfile with a copy of the message
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* without original PATH and SEENBY lines, add the
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* new PATH and SEENBY lines.
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*/
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rewind(fp);
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if ((nfp = tmpfile()) == NULL)
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WriteError("$Unable to open tmpfile");
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while ((fgets(buf, 2048, fp)) != NULL) {
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Striplf(buf);
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fprintf(nfp, "%s", buf);
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/*
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* Don't write SEEN-BY and PATH lines
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*/
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if (strncmp(buf, " * Origin:", 10) == 0)
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break;
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fprintf(nfp, "\n");
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}
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/*
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* Now add new SEEN-BY and PATH lines
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*/
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seenlen = MAXSEEN + 1;
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/*
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* Ensure that it will not match for the first entry.
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*/
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oldnet = sbl->addr->net - 1;
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for (tmpl = sbl; tmpl; tmpl = tmpl->next) {
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if (tmpl->addr->net == oldnet)
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sprintf(sbe, " %u", tmpl->addr->node);
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else
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sprintf(sbe, " %u/%u", tmpl->addr->net, tmpl->addr->node);
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oldnet = tmpl->addr->net;
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seenlen += strlen(sbe);
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if (seenlen > MAXSEEN) {
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seenlen = 0;
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fprintf(nfp, "\nSEEN-BY:");
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sprintf(sbe, " %u/%u", tmpl->addr->net, tmpl->addr->node);
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seenlen = strlen(sbe);
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}
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fprintf(nfp, "%s", sbe);
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}
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seenlen = MAXPATH + 1;
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/*
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* Ensure it will not match for the first entry
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*/
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oldnet = ptl->addr->net - 1;
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for (tmpl = ptl; tmpl; tmpl = tmpl->next) {
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if (tmpl->addr->net == oldnet)
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sprintf(sbe, " %u", tmpl->addr->node);
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else
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sprintf(sbe, " %u/%u", tmpl->addr->net, tmpl->addr->node);
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oldnet = tmpl->addr->net;
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seenlen += strlen(sbe);
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if (seenlen > MAXPATH) {
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seenlen = 0;
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fprintf(nfp, "\n\001PATH:");
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sprintf(sbe, " %u/%u", tmpl->addr->net, tmpl->addr->node);
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seenlen = strlen(sbe);
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}
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fprintf(nfp, "%s", sbe);
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}
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fprintf(nfp, "\n");
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fflush(nfp);
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rewind(nfp);
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/*
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* Import this echomail, even if it's bad or a dupe.
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*/
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if ((rc = storeecho(f, t, mdate, flags, subj, msgid, reply, bad, dupe, nfp)) || bad || dupe) {
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/*
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* Store failed or it was bad or a dupe. Only log failed store.
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*/
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if (rc)
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WriteError("Store echomail in JAM base failed");
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tidy_falist(&sbl);
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tidy_falist(&ptl);
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tidy_qualify(&qal);
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free(buf);
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if (msgid)
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free(msgid);
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if (reply)
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free(reply);
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fclose(nfp);
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return rc;
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}
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/*
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* Forward to other links
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*/
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for (tmpq = qal; tmpq; tmpq = tmpq->next) {
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if (tmpq->send) {
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if (SearchNode(tmpq->aka)) {
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StatAdd(&nodes.MailSent, 1L);
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UpdateNode();
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SearchNode(tmpq->aka);
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echo_out++;
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if (EchoOut(tmpq->aka, t->name, f->name, subj, nfp, flags, cost, mdate))
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WriteError("Forward echomail to %s failed", aka2str(tmpq->aka));
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} else {
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WriteError("Forward echomail to %s failed, noderecord not found", aka2str(tmpq->aka));
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Gate to newsserver
|
|
*/
|
|
if (strlen(msgs.Newsgroup) && tonews) {
|
|
rewind(nfp);
|
|
qp = tmpfile();
|
|
while ((fgets(buf, 2048, nfp)) != NULL) {
|
|
Striplf(buf);
|
|
if (kludges && (buf[0] != '\001') && strncmp(buf, "AREA:", 5)) {
|
|
kludges = FALSE;
|
|
q = xstrcpy(Msg.From);
|
|
for (i = 0; i < strlen(q); i++)
|
|
if (q[i] == ' ')
|
|
q[i] = '_';
|
|
fprintf(qp, "From: %s@%s\n", q, ascinode(f, 0x1f));
|
|
fprintf(qp, "Subject: %s\n", Msg.Subject);
|
|
fprintf(qp, "To: %s\n", Msg.To);
|
|
free(q);
|
|
fprintf(qp, "\n");
|
|
}
|
|
fprintf(qp, "%s\n", buf);
|
|
}
|
|
rewind(qp);
|
|
ftn2rfc(f, t, subj, orig, mdate, flags, qp);
|
|
fclose(qp);
|
|
}
|
|
fclose(nfp);
|
|
|
|
/*
|
|
* Free memory used by SEEN-BY, ^APATH and Qualified lines.
|
|
*/
|
|
tidy_falist(&sbl);
|
|
tidy_falist(&ptl);
|
|
tidy_qualify(&qal);
|
|
|
|
if (rc < 0)
|
|
rc =-rc;
|
|
free(buf);
|
|
if (msgid)
|
|
free(msgid);
|
|
if (reply)
|
|
free(reply);
|
|
return rc;
|
|
}
|
|
|
|
|
|
|