2 Copyright (c) 2006 Joey Schulze <joey@infodrom.org>
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
25 * Index_hex and Index_64 imported from Mutt:handler.c
26 * decode_quotedprintable() and decode_base64() as well
28 int Index_hex[128] = {
29 -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,
30 -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,
31 -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,
32 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,-1,-1, -1,-1,-1,-1,
33 -1,10,11,12, 13,14,15,-1, -1,-1,-1,-1, -1,-1,-1,-1,
34 -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,
35 -1,10,11,12, 13,14,15,-1, -1,-1,-1,-1, -1,-1,-1,-1,
36 -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1
40 -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,
41 -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,
42 -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,62, -1,-1,-1,63,
43 52,53,54,55, 56,57,58,59, 60,61,-1,-1, -1,-1,-1,-1,
44 -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,10, 11,12,13,14,
45 15,16,17,18, 19,20,21,22, 23,24,25,-1, -1,-1,-1,-1,
46 -1,26,27,28, 29,30,31,32, 33,34,35,36, 37,38,39,40,
47 41,42,43,44, 45,46,47,48, 49,50,51,-1, -1,-1,-1,-1
49 #define hexval(c) Index_hex[(unsigned int)(c)]
50 #define base64val(c) Index_64[(unsigned int)(c)]
54 * Decode a string from quoted printable
56 char *decode_quotedprintable(char *buf)
61 endp = buf+strlen(buf);
63 for (inp = outp = buf; inp < endp; inp++) {
66 else if (*inp == '=' && inp+2 < endp &&
67 (!(*(inp+1) & ~127) && hexval(*(inp+1)) != -1) &&
68 (!(*(inp+2) & ~127) && hexval(*(inp+2)) != -1)) {
69 *(outp++) = (hexval(*(inp+1)) << 4) | hexval(*(inp+2));
80 * Decode a string from base43
82 char *decode_base64(char *buf)
88 endp = buf+strlen(buf);
90 for (inp = outp = buf; inp < endp; inp++) {
93 if ((*inp & ~127) || (c = base64val(*inp)) == -1)
98 *(outp++) = b | (c >> k);
113 * converts a header line into the current character set if required
115 char *convert_header(char *buf)
119 char *inp, *outp, *encstart, *wordp, *encp, *endp;
123 endp = buf+strlen(buf);
126 while ((encstart = strstr (inp, "=?"))) {
130 memmove (outp, inp, encstart-inp-1);
131 outp += encstart-inp-1;
133 charset = encstart+2;
135 if ((encp = strchr (charset, '?')) == NULL) {
136 memmove (outp, inp, strlen(inp)+1);
142 if ((encp + 3 >= endp) || !strchr ("BbQq", *encp) || (*(encp+2) != '?')) {
143 memmove (outp, inp, strlen(inp)+1);
147 encoding = toupper(*(encp+1));
151 if ((wordp = strstr (inp, "?=")) == NULL) {
152 memmove (outp, encstart, strlen(encstart)+1);
154 encstart += strlen(encstart)+1;
155 memmove (outp, encstart, strlen(encstart)+1);
164 decode = decode_base64 (inp);
167 decode = decode_quotedprintable (inp);
174 size = wordp - outp -1;
175 decode = convert_word (charset, decode, outp, size);
177 memmove (outp, decode, strlen(decode));
178 outp += strlen(decode);
184 memmove (outp, inp, strlen(inp)+1);
191 * Needs to be called with LANG=de_DE.ISO-8859-1
203 qp = strdup ("f=FCr");
204 printf ("\t%s -> ", qp);
205 b64 = decode_quotedprintable (qp);
207 if (!strcmp (qp, "für"))
208 printf ("rfc2047.c: decode_quotedprintable() passed\n");
210 printf ("rfc2047.c: decode_quotedprintable() failed\n");
213 qp = strdup ("f=FCr_Umlaute_=EFm_Sub");
214 printf ("\t%s -> ", qp);
215 b64 = decode_quotedprintable (qp);
217 if (!strcmp (qp, "für Umlaute ïm Sub"))
218 printf ("rfc2047.c: decode_quotedprintable() passed\n");
220 printf ("rfc2047.c: decode_quotedprintable() failed\n");
223 b64 = strdup ("ZvxyINxtbOT8dOs=");
224 printf ("\t%s -> ", b64);
225 b64 = decode_base64 (b64);
226 printf ("%s\n", b64);
227 if (!strcmp (b64, "für Ümläütë"))
228 printf ("rfc2047.c: decode_base64() passed\n");
230 printf ("rfc2047.c: decode_base64() failed\n");
233 subject = strdup ("Vorschlag =?ISO-8859-1?Q?f=FCr?= ein Eintrittskonzept");
234 printf ("\t%s\n", subject);
235 subject = convert_header (subject);
236 printf ("\t%s\n", subject);
237 if (!strcmp (subject, "Vorschlag für ein Eintrittskonzept"))
238 printf ("rfc2047.c: convert_header() passed\n");
240 printf ("rfc2047.c: convert_header() failed\n");
243 subject = strdup ("=?utf-8?q?Google=3A_Chat_f=C3=BCr_die_Ewigkeit?=");
244 printf ("\t%s\n", subject);
245 subject = convert_header (subject);
246 printf ("\t%s\n", subject);
247 if (!strcmp (subject, "Google: Chat für die Ewigkeit"))
248 printf ("rfc2047.c: convert_header() passed\n");
250 printf ("rfc2047.c: convert_header() failed\n");
253 subject = strdup ("=?iso-8859-1?B?ZvxyINxtbOT8dOs=?= testen");
254 printf ("\t%s\n", subject);
255 subject = convert_header (subject);
256 printf ("\t%s\n", subject);
257 if (!strcmp (subject, "für Ümläütë testen"))
258 printf ("rfc2047.c: convert_header() passed\n");
260 printf ("rfc2047.c: convert_header() failed\n");