diff options
Diffstat (limited to 'src/xine-utils/base64.c')
| -rw-r--r-- | src/xine-utils/base64.c | 198 |
1 files changed, 198 insertions, 0 deletions
diff --git a/src/xine-utils/base64.c b/src/xine-utils/base64.c new file mode 100644 index 000000000..358cbbada --- /dev/null +++ b/src/xine-utils/base64.c @@ -0,0 +1,198 @@ +/* + * Copyright (C) 2000 Robert Kaye + * + * This file is part of xine, a free video player. + * + * xine 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. + * + * xine 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 this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA + * + * Base64 encoding modified for Musicbrainz + * relicensed under the GNU General Public License for use in xine-lib + * + */ +/* -------------------------------------------------------------------------- + + MusicBrainz -- The Internet music metadatabase + + Copyright (C) 2000 Robert Kaye + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + This library 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 + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with this library; if not, write to the Free Software + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + + $Id: base64.c,v 1.2 2004/05/05 18:44:19 mroi Exp $ + +----------------------------------------------------------------------------*/ +/* + * Program: RFC-822 routines (originally from SMTP) + * + * Author: Mark Crispin + * Networks and Distributed Computing + * Computing & Communications + * University of Washington + * Administration Building, AG-44 + * Seattle, WA 98195 + * Internet: MRC@CAC.Washington.EDU + * + * Date: 27 July 1988 + * Last Edited: 10 September 1998 + * + * Sponsorship: The original version of this work was developed in the + * Symbolic Systems Resources Group of the Knowledge Systems + * Laboratory at Stanford University in 1987-88, and was funded + * by the Biomedical Research Technology Program of the National + * Institutes of Health under grant number RR-00785. + * + * Original version Copyright 1988 by The Leland Stanford Junior University + * Copyright 1998 by the University of Washington + * + * Permission to use, copy, modify, and distribute this software and its + * documentation for any purpose and without fee is hereby granted, provided + * that the above copyright notices appear in all copies and that both the + * above copyright notices and this permission notice appear in supporting + * documentation, and that the name of the University of Washington or The + * Leland Stanford Junior University not be used in advertising or publicity + * pertaining to distribution of the software without specific, written prior + * permission. This software is made available "as is", and + * THE UNIVERSITY OF WASHINGTON AND THE LELAND STANFORD JUNIOR UNIVERSITY + * DISCLAIM ALL WARRANTIES, EXPRESS OR IMPLIED, WITH REGARD TO THIS SOFTWARE, + * INCLUDING WITHOUT LIMITATION ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE, AND IN NO EVENT SHALL THE UNIVERSITY OF + * WASHINGTON OR THE LELAND STANFORD JUNIOR UNIVERSITY BE LIABLE FOR ANY + * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER + * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF + * CONTRACT, TORT (INCLUDING NEGLIGENCE) OR STRICT LIABILITY, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + */ + +#include <ctype.h> +#include <stdio.h> +#include <time.h> +#include <stdlib.h> + +#include "base64.h" + + +/* NOTE: This is not true RFC822 anymore. The use of the characters + '/', '+', and '=' is no bueno when the ID will be used as part of a URL. + '_', '.', and '-' have been used instead +*/ + +/* Convert binary contents to BASE64 + * Accepts: source + * length of source + * pointer to return destination length + * Returns: destination as BASE64 + */ + +unsigned char *rfc822_binary (void *src,unsigned long srcl,unsigned long *len) +{ + unsigned char *ret,*d; + unsigned char *s = (unsigned char *) src; + char *v = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789._"; + unsigned long i = ((srcl + 2) / 3) * 4; + *len = i += 2 * ((i / 60) + 1); + d = ret = (unsigned char *) malloc ((size_t) ++i); + for (i = 0; srcl; s += 3) { /* process tuplets */ + *d++ = v[s[0] >> 2]; /* byte 1: high 6 bits (1) */ + /* byte 2: low 2 bits (1), high 4 bits (2) */ + *d++ = v[((s[0] << 4) + (--srcl ? (s[1] >> 4) : 0)) & 0x3f]; + /* byte 3: low 4 bits (2), high 2 bits (3) */ + *d++ = srcl ? v[((s[1] << 2) + (--srcl ? (s[2] >> 6) : 0)) & 0x3f] : '-'; + /* byte 4: low 6 bits (3) */ + *d++ = srcl ? v[s[2] & 0x3f] : '-'; + if (srcl) srcl--; /* count third character if processed */ + if ((++i) == 15) { /* output 60 characters? */ + i = 0; /* restart line break count, insert CRLF */ + *d++ = '\015'; *d++ = '\012'; + } + } + *d = '\0'; /* tie off string */ + + return ret; /* return the resulting string */ +} + +unsigned char *base64_encode (void *src,unsigned long srcl,unsigned long *len) +{ + unsigned char *ret,*d; + unsigned char *s = (unsigned char *) src; + char *v = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789._"; + unsigned long i = ((srcl + 2) / 3) * 4; + *len = i; + d = ret = (unsigned char *) malloc ((size_t) ++i); + for (i = 0; srcl; s += 3) { /* process tuplets */ + *d++ = v[s[0] >> 2]; /* byte 1: high 6 bits (1) */ + /* byte 2: low 2 bits (1), high 4 bits (2) */ + *d++ = v[((s[0] << 4) + (--srcl ? (s[1] >> 4) : 0)) & 0x3f]; + /* byte 3: low 4 bits (2), high 2 bits (3) */ + *d++ = srcl ? v[((s[1] << 2) + (--srcl ? (s[2] >> 6) : 0)) & 0x3f] : '-'; + /* byte 4: low 6 bits (3) */ + *d++ = srcl ? v[s[2] & 0x3f] : '-'; + if (srcl) srcl--; /* count third character if processed */ + } + *d = '\0'; /* tie off string */ + + return ret; /* return the resulting string */ +} + +void *base64_decode (unsigned char *src,unsigned long srcl,unsigned long *len) +{ + void *ret; + unsigned char *d; + unsigned long i = ((srcl + 3) / 4) * 3; + *len = i; + d = ret = (void *) malloc ((size_t)i); + for (i = 0; srcl; src += 4) { /* process tuplets */ + unsigned char tuplet[4]; + int j; + + for (j = 0; j < 4; j += 1) { + if (srcl) { + if ((src[j] >= 'A') && (src[j] <= 'Z')) { + tuplet[j] = src[j] - 'A'; + } else if ((src[j] >= 'a') && (src[j] <= 'z')) { + tuplet[j] = src[j] - 'a' + 26; + } else if ((src[j] >= '0') && (src[j] <= '9')) { + tuplet[j] = src[j] - '0' + 52; + } else if (src[j] == '.') { + tuplet[j] = 62; + } else if (src[j] == '_') { + tuplet[j] = 63; + } else { + tuplet[j] = 64; + } + srcl--; + } else { + tuplet[j] = 64; + } + } + + *d++ = (tuplet[0] << 2) + ((tuplet[1] & 0x3f) >> 4); + *d++ = (tuplet[1] << 4) + ((tuplet[2] & 0x3f) >> 2); + *d++ = (tuplet[2] << 6) + (tuplet[3] & 0x3f); + } + + return ret; /* return the resulting string */ +} |