685 lines
14 KiB
C
685 lines
14 KiB
C
/*****************************************************************************
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*
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* $Id: ftn.c,v 1.11 2005/10/11 20:49:42 mbse Exp $
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* Purpose ...............: Fidonet Technology Network functions
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* Remark ................: From ifmail with patches from P.Saratxaga
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*
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*****************************************************************************
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* Copyright (C) 1997-2005
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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, 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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*****************************************************************************/
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#include "../config.h"
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#include "mbselib.h"
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#include "users.h"
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#include "mbsedb.h"
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#ifndef MAXUSHORT
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#define MAXUSHORT 65535
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#endif
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#ifndef BLANK_SUBS
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#define BLANK_SUBS '.'
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#endif
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int addrerror = 0;
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void tidy_faddr(faddr *addr)
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{
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if (addr == NULL)
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return;
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if (addr->name)
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free(addr->name);
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if (addr->domain)
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free(addr->domain);
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free(addr);
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}
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faddr *parsefnode(char *s)
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{
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faddr addr, *tmp;
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char *buf, *str, *p, *q, *n;
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int good = 1;
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if (s == NULL)
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return NULL;
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str = buf = xstrcpy(s);
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while (isspace(*str))
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str++;
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if (*(p=str+strlen(str)-1) == '\n')
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*(p--) ='\0';
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while (isspace(*p))
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*(p--) = '\0';
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p=str + strlen(str) - 1;
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if (((*str == '(') && (*p == ')')) || ((*str == '\"') && (*p == '\"')) ||
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((*str == '\'') && (*p == '\'')) || ((*str == '<') && (*p == '>')) ||
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((*str == '[') && (*p == ']')) || ((*str == '{') && (*p == '}'))) {
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str++;
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*p = '\0';
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}
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memset(&addr, 0, sizeof(faddr));
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if ((p = strrchr(str,' '))) {
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n = str;
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str = p + 1;
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while (isspace(*p))
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*(p--) = '\0';
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if (!strcasecmp(p - 2," of"))
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*(p-2) = '\0';
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else if (!strcasecmp(p - 1," @"))
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*(p-1) = '\0';
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p -= 3;
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while (isspace(*p) || (*p == ','))
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*(p--) = '\0';
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if (strlen(n) > MAXNAME)
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n[MAXNAME] = '\0';
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if (*n != '\0')
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addr.name = xstrcpy(n);
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}
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if ((p = strrchr(str, '@')))
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*(p++) = '\0';
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else if ((p = strrchr(str,'%')))
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*(p++) = '\0';
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else if ((q = strrchr(str,'#'))) {
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*(q++) = '\0';
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p = str;
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str = q;
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} else if (addr.name && (strrchr(addr.name,'@'))) {
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str = xstrcpy(addr.name);
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if ((p=strrchr(str,'@')))
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*(p++) = '\0';
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else if ((p=strrchr(str,'%')))
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*(p++) = '\0';
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} else
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p = NULL;
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if (p && ((q = strchr(p,'.'))))
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*q = '\0';
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addr.point = 0;
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addr.node = 0;
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addr.net = 0;
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addr.zone = 0;
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addr.domain = xstrcpy(p);
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if ((p = strchr(str, ':'))) {
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*(p++) = '\0';
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if (strspn(str, "0123456789") == strlen(str))
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addr.zone = atoi(str);
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else
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if (strcmp(str,"*") == 0)
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addr.zone = -1;
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else
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good = 0;
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str = p;
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}
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if ((p = strchr(str, '/'))) {
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*(p++) = '\0';
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if (strspn(str, "0123456789") == strlen(str))
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addr.net = atoi(str);
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else
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if (strcmp(str, "*") == 0)
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addr.net = -1;
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else
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good = 0;
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str = p;
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}
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if ((p=strchr(str, '.'))) {
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*(p++) = '\0';
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if (strspn(str, "0123456789") == strlen(str))
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addr.node = atoi(str);
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else
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if (strcmp(str, "*") == 0)
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addr.node = -1;
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else
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good = 0;
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str = p;
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} else {
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if (strspn(str, "0123456789") == strlen(str))
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addr.node = atoi(str);
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else
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if (strcmp(str, "*") == 0)
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addr.node = -1;
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else
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good = 0;
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str = NULL;
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}
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if (str) {
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if (strspn(str, "0123456789") == strlen(str))
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addr.point = atoi(str);
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else
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if (strcmp(str, "*") == 0)
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addr.point = -1;
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else
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good = 0;
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}
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if (buf)
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free(buf);
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if (good) {
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tmp = (faddr *)malloc(sizeof(addr));
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tmp->name = NULL;
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tmp->domain = addr.domain;
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tmp->point = addr.point;
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tmp->node = addr.node;
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tmp->net = addr.net;
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tmp->zone = addr.zone;
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return tmp;
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} else {
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if (addr.name)
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free(addr.name);
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if (addr.domain)
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free(addr.domain);
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return NULL;
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}
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}
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faddr *parsefaddr(char *s)
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{
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faddr *tmpaddr = NULL;
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parsedaddr rfcaddr;
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int gotzone = 0, gotnet = 0, gotnode = 0, gotpoint = 0;
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int zone = 0, net = 0, noden = 0, point = 0;
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char *domain = NULL, *freename = NULL;
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int num;
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char *p = NULL,*q = NULL,*t = NULL;
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int l, quoted;
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FILE *fp;
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rfcaddr.target = NULL;
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rfcaddr.remainder = NULL;
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rfcaddr.comment = NULL;
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t = xstrcpy(s);
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if (*(q=t+strlen(t)-1) == '\n')
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*q='\0';
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if (((*(p=t) == '(') && (*(q=p+strlen(p)-1) == ')')) || ((*p == '\"') && (*q == '\"'))) {
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p++;
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*q='\0';
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}
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if (strchr(s,'@') || strchr(s,'%') || strchr(s,'!'))
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rfcaddr = parserfcaddr(p);
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else {
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addrerror = 0;
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rfcaddr.target = xstrcpy(p);
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}
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free(t);
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if ((addrerror) || (rfcaddr.target == NULL))
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goto leave;
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p = calloc(PATH_MAX, sizeof(char));
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snprintf(p, PATH_MAX -1, "%s/etc/domain.data", getenv("MBSE_ROOT"));
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if ((fp = fopen(p, "r")) == NULL) {
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WriteError("$Can't open %s", p);
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free(p);
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} else {
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free(p);
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fread(&domainhdr, sizeof(domainhdr), 1, fp);
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p = rfcaddr.target;
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while (fread(&domtrans, domainhdr.recsize, 1, fp) == 1) {
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q = p + strlen(p) - strlen(domtrans.intdom);
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if ((q >= p) && (strcasecmp(domtrans.intdom, q) == 0)) {
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*q = '\0';
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q = malloc(strlen(p) + strlen(domtrans.ftndom) +1);
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strcpy(q, p);
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strcat(q, domtrans.ftndom);
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p = q;
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free(rfcaddr.target);
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rfcaddr.target = p;
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break;
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}
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}
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fclose(fp);
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}
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if (((l = strlen(rfcaddr.target)) > 4) && (strcasecmp(rfcaddr.target + l - 4,".ftn") == 0)) {
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rfcaddr.target[l-4] = '\0';
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}
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for (p = strtok(rfcaddr.target, "."); p; p = strtok(NULL,".")) {
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if (((l = strlen(p + 1)) > 0) && (l <= 5) &&
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(strspn(p + 1, "0123456789") == l)) {
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num = atol(p + 1);
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switch (*p) {
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case 'z':
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case 'Z':
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gotzone++;
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if (num > MAXUSHORT)
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addrerror |= ADDR_BADTOKEN;
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zone = num;
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break;
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case 'n':
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case 'N':
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gotnet++;
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if (num > MAXUSHORT)
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addrerror |= ADDR_BADTOKEN;
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net = num;
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break;
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case 'f':
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case 'F':
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gotnode++;
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if (num > MAXUSHORT)
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addrerror |= ADDR_BADTOKEN;
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noden = num;
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break;
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case 'p':
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case 'P':
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gotpoint++;
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if (num > MAXUSHORT)
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addrerror |= ADDR_BADTOKEN;
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point = num;
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break;
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default:
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if (gotnet && gotnode) {
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if (domain == NULL)
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domain = xstrcpy(p);
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} else
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addrerror |= ADDR_BADTOKEN;
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break;
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}
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} else { /* not "cNNNN" token */
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if (gotnet && gotnode) {
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if (domain == NULL)
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domain = xstrcpy(p);
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} else
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addrerror |= ADDR_BADTOKEN;
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}
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}
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if ((gotzone > 1) || (gotnet != 1) || (gotnode != 1) || (gotpoint > 1)) {
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addrerror |= ADDR_BADSTRUCT;
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}
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if (addrerror)
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goto leave;
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if (rfcaddr.remainder) {
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quoted = 0;
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if ((*(p = rfcaddr.remainder) == '\"') && (*(q = p + strlen(p) -1) == '\"')) {
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p++;
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*q='\0';
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quoted = 1;
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}
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if (strchr(p,'@') || strchr(p,'%') || strchr(p,'!')) {
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if (((q=strrchr(p,'%'))) && !strchr(p,'@'))
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*q = '@';
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} else if ((!quoted) && (!strchr(p, ' '))) {
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for (q = p; *q; q++) {
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if (*q == BLANK_SUBS)
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*q = ' ';
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else if (*q == '.')
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*q = ' ';
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else if (*q == '_')
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*q = ' ';
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}
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}
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for (q = p; *q; q++) {
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if ((*q == '\\') && ((*(q+1) == '"') || ((*(q+1) == '\\') && (!quoted)))) {
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*q='\0';
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strcat(p, q+1);
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}
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}
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if (strspn(p," ") != strlen(p))
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freename = xstrcpy(p);
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}
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tmpaddr=(faddr*)malloc(sizeof(faddr));
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tmpaddr->zone=zone;
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tmpaddr->net=net;
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tmpaddr->node=noden;
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tmpaddr->point=point;
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tmpaddr->domain=domain;
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domain=NULL;
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tmpaddr->name=freename;
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freename=NULL;
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leave:
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if (domain)
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free(domain);
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if (freename)
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free(freename);
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tidyrfcaddr(rfcaddr);
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return tmpaddr;
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}
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char *ascinode(faddr *a, int fl)
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{
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static char buf[128], *f, *t, *p;
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static char *q;
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int skip, found = FALSE;
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FILE *fp;
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if (a == NULL) {
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strcpy(buf,"<none>");
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return buf;
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}
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buf[0]='\0';
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if ((fl & 0x80) && (a->name)) {
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if ((strchr(a->name,'.')) || (strchr(a->name,'@')) ||
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(strchr(a->name,'\'')) || (strchr(a->name,',')) ||
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(strchr(a->name,'<')) || (strchr(a->name,'>')))
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snprintf(buf+strlen(buf), 128, "\"%s\" <", a->name);
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else
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snprintf(buf+strlen(buf), 128, "%s <", a->name);
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}
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if ((fl & 0x40) && (a->name)) {
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f = a->name;
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t = buf + strlen(buf);
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skip = 0;
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if ((!strchr(f,'@')) && ((strchr(f,BLANK_SUBS)) || (strchr(f,'.')) || (strchr(f,'_')))) {
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skip = 1;
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*t++='"';
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}
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while (*f) {
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switch (*f) {
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case '_':
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case '.': *t++=*f;
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break;
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case ' ': if (!skip)
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*t++=BLANK_SUBS;
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else {
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*t++='='; *t++='2'; *t++='0';
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}
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break;
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case ',': { /* "," is a problem on mail addr */
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if (!skip)
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*t++='\\';
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*t++='=';
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*t++='2';
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*t++='c';
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}
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case '@': if (skip) {
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*t++='"';
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skip=0;
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}
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*t++='%';
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break;
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case '"': *t++='\\';
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*t++=*f;
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break;
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case '>':
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case '<':
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case '\'': if (!skip)
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*t++='\\';
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*t++=*f;
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break;
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default: if ((((*f & 0xff) > 0x29) && ((*f & 0xff) < 0x3a)) ||
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(((*f & 0xff) > 0x40) && ((*f & 0xff) < 0x5b)) ||
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(((*f & 0xff) > 0x60) && ((*f & 0xff) < 0x7b)))
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*t++=*f;
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else {
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if (!skip)
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*t++='\\';
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*t++=*f;
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}
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break;
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}
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f++;
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}
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if (skip)
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*t++='"';
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skip = 0;
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*t++ = '@';
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*t++ = '\0';
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}
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if ((fl & 0x01) && (a->point))
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snprintf(buf+strlen(buf), 128, "p%u.", a->point);
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if (fl & 0x02)
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snprintf(buf+strlen(buf), 128, "f%u.", a->node);
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if (fl & 0x04)
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snprintf(buf+strlen(buf), 128, "n%u.", a->net);
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if ((fl & 0x08) && (a->zone))
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snprintf(buf+strlen(buf), 128, "z%u.", a->zone);
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buf[strlen(buf)-1]='\0';
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if (fl & 0x10) {
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if (a->domain)
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snprintf(buf+strlen(buf), 128, ".%s", a->domain);
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}
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if (fl & 0x20) {
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if (a->domain) {
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if ((fl & 0x10) == 0)
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snprintf(buf+strlen(buf), 128, ".%s", a->domain);
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} else {
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if (SearchFidonet(a->zone))
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snprintf(buf+strlen(buf), 128, ".%s", fidonet.domain);
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else
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snprintf(buf+strlen(buf), 128, ".fidonet");
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}
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p = calloc(128, sizeof(char));
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snprintf(p, 128, "%s/etc/domain.data", getenv("MBSE_ROOT"));
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if ((fp = fopen(p, "r")) == NULL) {
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WriteError("$Can't open %s", p);
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} else {
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fread(&domainhdr, sizeof(domainhdr), 1, fp);
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while (fread(&domtrans, domainhdr.recsize, 1, fp) == 1) {
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q = buf + strlen(buf) - strlen(domtrans.ftndom);
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if ((q >= buf) && (strcasecmp(domtrans.ftndom, q) == 0)) {
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strcpy(q, domtrans.intdom);
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found = TRUE;
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break;
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}
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}
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fclose(fp);
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}
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free(p);
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if (!found)
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snprintf(buf + strlen(buf), 128, ".ftn");
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}
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if ((fl & 0x80) && (a->name))
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snprintf(buf+strlen(buf), 128, ">");
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return buf;
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}
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/*
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* Return ASCII string for node, the bits in 'fl' set the
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* output format.
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*/
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char *ascfnode(faddr *a, int fl)
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{
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static char buf[128];
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if (a == NULL) {
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strcpy(buf, "<none>");
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return buf;
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}
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buf[0] = '\0';
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if ((fl & 0x40) && (a->name))
|
|
snprintf(buf+strlen(buf),128,"%s of ",a->name);
|
|
if ((fl & 0x08) && (a->zone))
|
|
snprintf(buf+strlen(buf),128,"%u:",a->zone);
|
|
if (fl & 0x04)
|
|
snprintf(buf+strlen(buf),128,"%u/",a->net);
|
|
if (fl & 0x02)
|
|
snprintf(buf+strlen(buf),128,"%u",a->node);
|
|
if ((fl & 0x01) && (a->point))
|
|
snprintf(buf+strlen(buf),128,".%u",a->point);
|
|
if ((fl & 0x10) && (a->domain))
|
|
snprintf(buf+strlen(buf),128,"@%s",a->domain);
|
|
return buf;
|
|
}
|
|
|
|
|
|
|
|
int metric(faddr *a1, faddr *a2)
|
|
{
|
|
if ((a1->domain != NULL) && (a2->domain != NULL) &&
|
|
(strcasecmp(a1->domain,a2->domain) != 0))
|
|
return METRIC_DOMAIN;
|
|
if ((a1->zone != 0) && (a2->zone != 0) &&
|
|
(a1->zone != a2->zone)) return METRIC_ZONE;
|
|
if (a1->net != a2->net) return METRIC_NET;
|
|
if (a1->node != a2->node) return METRIC_NODE;
|
|
if (a1->point != a2->point) return METRIC_POINT;
|
|
return METRIC_EQUAL;
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
* Convert mbse style to ifcico style.
|
|
*/
|
|
faddr *fido2faddr(fidoaddr aka)
|
|
{
|
|
faddr *fa;
|
|
|
|
fa = (faddr *)malloc(sizeof(faddr));
|
|
fa->name = NULL;
|
|
fa->domain = xstrcpy(aka.domain);;
|
|
fa->zone = aka.zone;
|
|
fa->net = aka.net;
|
|
fa->node = aka.node;
|
|
fa->point = aka.point;
|
|
|
|
return fa;
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
* Convert ifcico style to mbse style
|
|
*/
|
|
fidoaddr *faddr2fido(faddr *aka)
|
|
{
|
|
fidoaddr *Sys;
|
|
|
|
Sys = (fidoaddr *)malloc(sizeof(fidoaddr));
|
|
memset(Sys, 0, sizeof(Sys));
|
|
Sys->zone = aka->zone;
|
|
Sys->net = aka->net;
|
|
Sys->node = aka->node;
|
|
Sys->point = aka->point;
|
|
if (aka->domain != NULL)
|
|
snprintf(Sys->domain, 13, "%s", aka->domain);
|
|
|
|
return Sys;
|
|
}
|
|
|
|
|
|
|
|
faddr *bestaka_s(faddr *addr)
|
|
{
|
|
faddr *best = NULL, *tmp;
|
|
int i, minmetric, wt;
|
|
|
|
for (i = 0; i < 40; i++) {
|
|
if (CFG.akavalid[i]) {
|
|
best = fido2faddr(CFG.aka[i]);
|
|
break;
|
|
}
|
|
}
|
|
if (addr == NULL)
|
|
return best;
|
|
minmetric = metric(addr, best);
|
|
|
|
for (i = 0; i < 40; i++) {
|
|
if (CFG.akavalid[i]) {
|
|
tmp = fido2faddr(CFG.aka[i]);
|
|
wt = metric(addr, tmp);
|
|
tidy_faddr(tmp);
|
|
|
|
if ((wt < minmetric) && ((best->point != 0) || (minmetric > METRIC_NODE))) {
|
|
/*
|
|
* In the same network, use node address even when
|
|
* routing to the node where we have a point address
|
|
*/
|
|
minmetric = wt;
|
|
tidy_faddr(best);
|
|
best = fido2faddr(CFG.aka[i]);
|
|
}
|
|
}
|
|
}
|
|
return best;
|
|
}
|
|
|
|
|
|
|
|
int is_local(faddr *addr)
|
|
{
|
|
int i;
|
|
faddr *tmp;
|
|
|
|
for (i = 0; i < 40; i++) {
|
|
tmp = fido2faddr(CFG.aka[i]);
|
|
if ((CFG.akavalid[i]) && (metric(tmp, addr) == METRIC_EQUAL)) {
|
|
tidy_faddr(tmp);
|
|
return TRUE;
|
|
}
|
|
tidy_faddr(tmp);
|
|
}
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
|
|
int chkftnmsgid(char *msgid)
|
|
{
|
|
faddr *p;
|
|
|
|
if (msgid == NULL)
|
|
return 0;
|
|
|
|
while (isspace(*msgid))
|
|
msgid++;
|
|
if ((p=parsefaddr(msgid))) {
|
|
if (p->name && (strspn(p->name,"0123456789") == strlen(p->name)))
|
|
return 1;
|
|
} else if ((!strncmp(msgid,"<MSGID_",7)) || (!strncmp(msgid,"<NOMSGID_",9)) || (!strncmp(msgid,"<ftn_",5))) {
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
|