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/*
**
** Copyright (C) 1993 Swedish University Network (SUNET)
**
**
** This program is developed by UDAC, Uppsala University by commission
** of the Swedish University Network (SUNET).
**
** This program 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 of the License, or
** (at your option) any later version.
**
** This program is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITTNESS 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 this program; if not, write to the Free Software
** Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
**
**
** Martin.Wendel@its.uu.se
** Torbjorn.Wictorin@its.uu.se
**
** ITS
** P.O. Box 887
** S-751 08 Uppsala
** Sweden
**
*/
#include "emil.h"
int fromuu[] = {
FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL,
FAIL, SKIP, SKIP, FAIL, FAIL, SKIP, FAIL, FAIL,
FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL,
FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL,
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,
0x00, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL,
FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL,
FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL,
FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL,
FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL,
FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL,
FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL,
FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL,
FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL,
FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL,
FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL,
FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL,
FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL,
FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL,
FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL,
FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL,
FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL,
FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL,
FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL,
FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL,
};
int
encode_uuencode(struct message *m)
{
struct data *inbuf, *outbuf;
int datalen;
int i, l;
int left;
unsigned long triple;
unsigned char *inb;
char outb[256];
inbuf = m->td;
inbuf->offset = inbuf->bodystart;
#ifdef DEBUG
if (edebug)
fprintf(stderr, "* Encoding UUencode.\n");
#endif
logger(LOG_DEBUG, "encode uuencode");
/* Exit on empty input */
if (!inbuf->size)
{
#ifdef DEBUG
if (edebug)
fprintf(stderr, "*** Empty input (failed).\n");
#endif
return(NOK);
}
/* Is this first line? */
if (inbuf->offset == 0)
datalen = 0;
outbuf = (struct data *)Yalloc(sizeof(struct data ));
outbuf->encoding = EUUENCODE;
/* Initialize working pointers */
inb = inbuf->contents + inbuf->offset;
triple = 0;
/* Start with uuencode preamble */
fix_filename(m);
snprintf(outb, sizeof(outb), "begin 644 %s\n", m->sd->name);
append_data(outbuf, outb, strlen(outb), pz);
outbuf->lineend += 1;
i = 0;
left = inbuf->bodyend - inbuf->offset;
datalen = (45 < left) ? 45 : left;
append_char(outbuf, datalen + ' ', pz);
/*
* Process entire inbuf.
*/
while (left != 0)
{
left--;
datalen--;
i++;
triple = (triple<<8) | *inb;
if (i == 3 || datalen == 0)
{
switch (i)
{
case 1:
triple = triple<<4;
break;
case 2:
triple = triple <<2;
break;
default:
break;
}
for (l = i; l >= 0; l--)
{
char tmpi;
tmpi = 0x3f & (triple>>(6*l));
append_char(outbuf, (tmpi != 0) ? (tmpi + ' '): '`', pz);
}
if (datalen == 0)
{
datalen = (45 < left) ? 45 : left;
if (datalen == 0)
{
switch (i)
{
case 1:
append_data(outbuf, "JJ\n \nend\n", 9, pz);
outbuf->lineend += 3;
left = 0;
break;
case 2:
append_data(outbuf, "J\n \nend\n", 8, pz);
outbuf->lineend += 3;
left = 0;
break;
default:
append_data(outbuf, "\n \nend\n", 7, pz);
outbuf->lineend += 3;
left = 0;
break;
}
}
else
{
append_char(outbuf, '\n', pz);
append_char(outbuf, datalen + ' ', pz);
outbuf->lineend += 1;
}
}
triple = 0;
i = 0;
}
inb++;
inbuf->offset += 1;
}
safe_mchange(m, outbuf);
return(OK);
}
/*
* decode_uuencode()
*
* Decode an uuencoded encoding
*/
int
decode_uuencode(struct message *m)
{
struct data *inbuf, *outbuf;
char *inb;
unsigned int i;
int ii;
int l;
int dl = 0;
int datalen;
char filename[512];
unsigned long triple;
inbuf = m->td;
inbuf->offset = inbuf->bodystart;
triple = 0;
#ifdef DEBUG
if (edebug)
fprintf(stderr, "* Decoding UUencode.\n");
#endif
logger(LOG_DEBUG, "decode uuencode");
/* Exit on empty input */
if (!inbuf->size)
{
#ifdef DEBUG
if (edebug)
fprintf(stderr, "*** Empty input (failed).\n");
#endif
return(NOK);
}
outbuf = (struct data *)Yalloc(sizeof(struct data ));
outbuf->encoding = EBINARY;
inb = inbuf->contents + inbuf->offset;
while (isspace(*inb))
{
inb++;
inbuf->offset += 1;
}
if ((i = sscanf(inb, "begin%*1[ ]%*3[0-7]%*1[ ]%511s", filename)) != 1)
{
#ifdef DEBUG
if (edebug)
fprintf(stderr, "*** Illegal start string at offset %lu (failed).\n",inbuf->offset);
#endif
sprintf(ebuf, "decode_uuencode: Illegal start string: %d", i);
logger(LOG_WARNING, ebuf);
return(NOK);
}
m->sd->name = NEWSTR(filename);
/* Set type */
if (m->sd->type == NULL || strcmp(m->sd->type, "APPLICATION") == 0)
if ((m->sd->nameext = getextension(filename)) != NULL)
if ((m->sd->type = confextr("UUENCODE", m->sd->nameext, NULL)) == NULL)
m->sd->type = confextr("UUENCODE", "DEFAULT", NULL);
if (m->sd->type == NULL)
m->sd->type = NEWSTR("APPLICATION");
inb += 10 + strlen(filename);
inbuf->offset += 10 + strlen(filename);
inbuf->loffset += 1;
l = 0;
datalen = 0;
/*
* Process entire inbuf.
*/
while (inbuf->offset < inbuf->end)
{
if (datalen == 0)
{
while (*inb != '\n')
{
/* Clean rest of the line */
inb++;
inbuf->offset += 1;
}
/* Skip Line feed */
inb++;
inbuf->offset += 1;
inbuf->loffset += 1;
/* Check for end */
if (strncmp(inb, "end", 3) == 0)
{
inbuf->offset += getline(inbuf);
inbuf->loffset += 1;
inbuf->bodyend = inbuf->offset;
if (process)
{
safe_mchange(m, outbuf);
if (match(m->sd->type, "TEXT"))
{
m->td->encoding = E7BIT;
check_bits(m->td);
}
else
m->td->encoding = EBINARY;
}
else
if (dl == 6)
{
m->td = outbuf;
check_as_ad(m);
m->td = m->sd;
}
return(OK);
}
/* Get data length */
if ((datalen = fromuu[(unsigned char)*inb]) < 0)
{
#ifdef DEBUG
if (edebug)
fprintf(stderr, "*** Illegal datalen at %lu: %c.\n",
inbuf->offset, *inb);
#endif
sprintf(ebuf, "decode_uuencode: Illegal datalen: %c at offset: %lu",
*inb, inbuf->offset);
logger(LOG_WARNING, ebuf);
return(NOK);
}
inb++;
inbuf->offset += 1;
}
else
{
if ((ii = fromuu[(unsigned char)*inb]) < 0)
{
#ifdef DEBUG
if (edebug)
fprintf(stderr, "*** Illegal character at %lu: %c.\n",
inbuf->offset, *inb);
#endif
sprintf(ebuf, "decode_uuencode: Illegal character: %c", *inb);
logger(LOG_WARNING, ebuf);
return(NOK);
}
triple = triple<<6 | (0x3f & ii);
l++;
if (l == 4 || l > datalen)
{
switch(l)
{
case 2:
triple = triple>>4;
break;
case 3:
triple = triple>>2;
break;
default:
break;
}
for (l -= 2; l >= 0 && datalen != 0; l--, datalen--)
if (process || dl < 6)
{
append_char(outbuf,(char) (0xff & (triple>>(8*l))), pz);
dl++;
}
triple = 0;
l = 0;
}
inb++;
inbuf->offset += 1;
}
}
#ifdef DEBUG
if (edebug)
fprintf(stderr, "*** Premature end of data (failed).\n");
#endif
logger(LOG_WARNING, "decode_uuencode: Premature end of data, uudecode failed");
return(NOK);
}
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