126 lines
2.5 KiB
C
126 lines
2.5 KiB
C
/*
|
|
** Copyright 1998 - 1999 Double Precision, Inc. See COPYING for
|
|
** distribution information.
|
|
*/
|
|
|
|
#if HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
#include "rfc2045.h"
|
|
#if HAVE_UNISTD_H
|
|
#include <unistd.h>
|
|
#endif
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#if HAVE_STRINGS_H
|
|
#include <strings.h>
|
|
#endif
|
|
#ifdef __WINDOWS__
|
|
#define strncasecmp strnicmp
|
|
#include <io.h>
|
|
#define read _read
|
|
#define lseek _lseek
|
|
#endif
|
|
|
|
|
|
/* $Id$ */
|
|
|
|
extern void rfc2045_add_buf( char **, size_t *, size_t *,
|
|
const char *, size_t);
|
|
|
|
static const char *boundary_chk_val;
|
|
static size_t boundary_chk_val_len;
|
|
static char *boundary_chk_buf;
|
|
static size_t boundary_chk_bufsize, boundary_chk_buflen;
|
|
static int boundary_chk_flag;
|
|
|
|
static void boundary_chk_add(const char *p, size_t l)
|
|
{
|
|
if (boundary_chk_buflen < boundary_chk_val_len+20)
|
|
rfc2045_add_buf( &boundary_chk_buf,
|
|
&boundary_chk_bufsize,
|
|
&boundary_chk_buflen, p, l);
|
|
}
|
|
|
|
static int boundary_chk(const char *p, size_t l, void *ptr)
|
|
{
|
|
static size_t i, j;
|
|
|
|
for (j=i=0; i<l; i++)
|
|
{
|
|
if (p[i] == '\n')
|
|
{
|
|
boundary_chk_add(p+j, i-j);
|
|
|
|
if (boundary_chk_buflen >= boundary_chk_val_len+2 &&
|
|
boundary_chk_buf[0] == '-' &&
|
|
boundary_chk_buf[1] == '-' &&
|
|
strncasecmp(boundary_chk_val,
|
|
boundary_chk_buf+2,
|
|
boundary_chk_val_len) == 0)
|
|
boundary_chk_flag=1;
|
|
|
|
boundary_chk_buflen=0;
|
|
j=i+1;
|
|
}
|
|
}
|
|
boundary_chk_add(p+j, l-j);
|
|
return (0);
|
|
}
|
|
|
|
static int try_boundary(struct rfc2045 *p, int fd)
|
|
{
|
|
int rc;
|
|
char buf[512];
|
|
int n, cnt;
|
|
off_t ps;
|
|
|
|
if (p->firstpart)
|
|
{
|
|
for (p=p->firstpart; p; p=p->next)
|
|
if ((rc=try_boundary(p, fd)) != 0)
|
|
return (rc);
|
|
return (0);
|
|
}
|
|
|
|
if (p->content_transfer_encoding &&
|
|
strcmp(p->content_transfer_encoding, "base64") == 0)
|
|
return (0);
|
|
|
|
boundary_chk_flag=0;
|
|
boundary_chk_buflen=0;
|
|
|
|
if (lseek(fd, p->startbody, SEEK_SET) == -1) return (-1);
|
|
rfc2045_cdecode_start(p, boundary_chk, 0);
|
|
|
|
ps=p->startbody;
|
|
while (ps < p->endbody)
|
|
{
|
|
if (p->endbody - ps < sizeof(buf))
|
|
cnt=p->endbody-ps;
|
|
else cnt=sizeof(buf);
|
|
n=read(fd, buf, cnt);
|
|
if (n <= 0) return (-1);
|
|
rfc2045_cdecode(p, buf, n);
|
|
ps += n;
|
|
if (boundary_chk_flag) break;
|
|
}
|
|
rfc2045_cdecode_end(p);
|
|
if (boundary_chk_buflen)
|
|
boundary_chk("\n", 1, 0); /* Flush out partial line */
|
|
return (boundary_chk_flag);
|
|
}
|
|
|
|
int rfc2045_try_boundary(struct rfc2045 *p, int fd, const char *boundary)
|
|
{
|
|
int n;
|
|
|
|
boundary_chk_val_len=strlen(boundary_chk_val=boundary);
|
|
boundary_chk_buf=0;
|
|
boundary_chk_bufsize=0;
|
|
n=try_boundary(p, fd);
|
|
if (boundary_chk_buf) free(boundary_chk_buf);
|
|
return (n);
|
|
}
|