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deb-mbse/lib/rfcmsg.c
2003-07-12 20:34:04 +00:00

157 lines
4.6 KiB
C

/*****************************************************************************
*
* $Id$
* Purpose ...............: RFC msg
*
*****************************************************************************
* Copyright (C) 1997-2003
*
* Michiel Broek FIDO: 2:280/2802
* Beekmansbos 10
* 1971 BV IJmuiden
* the Netherlands
*
* This file is part of MBSE BBS.
*
* This BBS is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2, or (at your option) any
* later version.
*
* MBSE BBS 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.
*
* You should have received a copy of the GNU General Public License
* along with MBSE BBS; see the file COPYING. If not, write to the Free
* Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
*****************************************************************************/
#include "../config.h"
#include "libs.h"
#include "memwatch.h"
#include "structs.h"
#include "users.h"
#include "records.h"
#include "common.h"
#include "clcomm.h"
#ifndef BUFSIZ
#define BUFSIZ 512
#endif
#define KWDCHARS "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_."
/*
* Parse RFC message, extract headers and do some sanity checks.
*/
rfcmsg *parsrfc(FILE *fp)
{
int linecont=FALSE,newcont,firstline;
rfcmsg *start=NULL, *cur=NULL;
char buffer[BUFSIZ], *p;
while (bgets(buffer, BUFSIZ-1, fp) && strcmp(buffer,"\n")) {
newcont = (buffer[strlen(buffer)-1] != '\n');
Syslog('M', "Line read: \"%s\" - %s continued", buffer,newcont?"to be":"not to be");
if (linecont) {
Syslog('M', "this is a continuation of a long line");
cur->val=xstrcat(cur->val,buffer);
} else {
if (isspace(buffer[0])) {
if (strspn(buffer," \t\n") == strlen(buffer)) {
Syslog('M', "breaking with blank-only line");
break;
}
Syslog('M', "this is a continuation line");
if (!cur) {
Syslog('M', "Wrong first line: \"%s\"",buffer);
cur = (rfcmsg *)malloc(sizeof(rfcmsg));
start = cur;
cur->next = NULL;
cur->key = xstrcpy((char *)"X-Body-Start");
cur->val = xstrcpy(buffer);
break;
} else
cur->val = xstrcat(cur->val,buffer);
} else {
// Syslog('M', "this is a header line");
if (cur) {
firstline=FALSE;
(cur->next) = (rfcmsg *)malloc(sizeof(rfcmsg));
cur = cur->next;
} else {
firstline = TRUE;
cur = (rfcmsg *)malloc(sizeof(rfcmsg));
start = cur;
}
cur->next = NULL;
cur->key = NULL;
cur->val = NULL;
if (firstline && !strncmp(buffer,"From ",5)) {
Syslog('M', "This is a uucpfrom line");
cur->key=xstrcpy((char *)"X-UUCP-From");
cur->val=xstrcpy(buffer+4);
} else if ((p=strchr(buffer,':')) && (p > buffer) && /* ':' isn't 1st chr */
isspace(*(p+1)) && /* space past ':' */
/* at least one non blank char */
(strspn(p+2, " \t\n") < strlen(p+2)) && (strspn(buffer,KWDCHARS) == (p-buffer))) {
*p='\0';
// Syslog('M', "This is a regular header");
cur->key = xstrcpy(buffer);
cur->val = xstrcpy(p+1);
} else if ((p=strchr(buffer,':')) && (!strncasecmp(buffer, (char *)"X-MS-", 5))) {
/*
* It looks like M$ invented their own internet standard, these
* are header lines without a key. This one will be stored here
* and junked in the rfc2ftn function.
*/
cur->key = xstrcpy(buffer);
cur->val = xstrcpy((char *)" ");
} else if ((p=strchr(buffer,':')) && (p > buffer)) {
/*
* Header line without information, don't add this one but log.
*/
Syslog('!', "Header line \"%s\" without key value", buffer);
cur->key = xstrcpy(buffer);
cur->val = xstrcpy((char *)" ");
} else if ((p=strchr(buffer,':')) && (p > buffer) && isspace(*(p+1))) { /* space past ':' */
Syslog('!', "Header line \"%s\" without key value (but with a Space)", buffer);
cur->key = xstrcpy(buffer);
cur->val = xstrcpy((char *)" ");
} else {
Syslog('M', "Non-header line: \"%s\"",buffer);
cur->key = xstrcpy((char *)"X-Body-Start");
cur->val = xstrcpy(buffer);
break;
}
}
}
linecont = newcont;
}
return(start);
}
void tidyrfc(rfcmsg *msg)
{
rfcmsg *nxt;
for (; msg; msg=nxt) {
nxt = msg->next;
if (msg->key)
free(msg->key);
if (msg->val)
free(msg->val);
free(msg);
}
return;
}