9838169a98
* src/Makefile.am
* src/pgptext.c
* src/procmime.c
* src/rfc2015.c
* src/uuencode.[ch] ** REMOVED **
* src/common/Makefile.am
* src/common/uuencode.[ch] ** NEW **
move uuen/decoder to common directory
101 lines
2.7 KiB
C
101 lines
2.7 KiB
C
/*
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* Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
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* Copyright (C) 1999,2000 Hiroyuki Yamamoto
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU 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 this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include <ctype.h>
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#define UUDECODE(c) (c=='`' ? 0 : c - ' ')
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#define N64(i) (i & ~63)
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const char uudigit[64] =
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{
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'`', '!', '"', '#', '$', '%', '&', '\'',
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'(', ')', '*', '+', ',', '-', '.', '/',
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'0', '1', '2', '3', '4', '5', '6', '7',
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'8', '9', ':', ';', '<', '=', '>', '?',
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'@', 'A', 'B', 'C', 'D', 'E', 'F', 'G',
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'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O',
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'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W',
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'X', 'Y', 'Z', '[', '\\', ']', '^', '_'
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};
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int touufrombits(unsigned char *out, const unsigned char *in, int inlen)
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{
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int len;
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if (inlen > 45) return -1;
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len = (inlen * 4 + 2) / 3 + 1;
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*out++ = uudigit[inlen];
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for (; inlen >= 3; inlen -= 3) {
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*out++ = uudigit[in[0] >> 2];
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*out++ = uudigit[((in[0] << 4) & 0x30) | (in[1] >> 4)];
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*out++ = uudigit[((in[1] << 2) & 0x3c) | (in[2] >> 6)];
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*out++ = uudigit[in[2] & 0x3f];
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in += 3;
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}
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if (inlen > 0) {
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*out++ = uudigit[(in[0] >> 2)];
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if (inlen == 1) {
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*out++ = uudigit[((in[0] << 4) & 0x30)];
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} else {
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*out++ = uudigit[(((in[0] << 4) & 0x30) | (in[1] >> 4))] ;
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*out++ = uudigit[((in[1] << 2) & 0x3c)];
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}
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}
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*out = '\0';
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return len;
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}
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int fromuutobits(char *out, const char *in)
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{
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int len, outlen, inlen;
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register unsigned char digit1, digit2;
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outlen = UUDECODE(in[0]);
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in += 1;
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if(outlen < 0 || outlen > 45)
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return -2;
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if(outlen == 0)
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return 0;
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inlen = (outlen * 4 + 2) / 3;
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len = 0;
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for( ; inlen>0; inlen-=4) {
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digit1 = UUDECODE(in[0]);
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if (N64(digit1)) return -1;
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digit2 = UUDECODE(in[1]);
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if (N64(digit2)) return -1;
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out[len++] = (digit1 << 2) | (digit2 >> 4);
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if (inlen > 2) {
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digit1 = UUDECODE(in[2]);
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if (N64(digit1)) return -1;
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out[len++] = (digit2 << 4) | (digit1 >> 2);
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if (inlen > 3) {
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digit2 = UUDECODE(in[3]);
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if (N64(digit2)) return -1;
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out[len++] = (digit1 << 6) | digit2;
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}
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}
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in += 4;
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}
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return len == outlen ? len : -3;
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}
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