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/* the Music Player Daemon (MPD)
* Copyright (C) 2003-2007 by Warren Dukes (warren.dukes@gmail.com)
* This project's homepage is: http://www.musicpd.org
*
* 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 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
*/
/* This file is only included by inputStream_http.c */
#ifndef INPUT_STREAM_HTTP_AUTH_H
#define INPUT_STREAM_HTTP_AUTH_H
#include "os_compat.h"
#include "utils.h"
/* base64 code taken from xmms */
#define BASE64_LENGTH(len) (4 * (((len) + 2) / 3))
static char *base64Dup(char *s)
{
int i;
int len = strlen(s);
char *ret = xcalloc(BASE64_LENGTH(len) + 1, 1);
unsigned char *p = (unsigned char *)ret;
static const char tbl[64] = {
'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H',
'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P',
'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X',
'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f',
'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n',
'o', 'p', 'q', 'r', 's', 't', 'u', 'v',
'w', 'x', 'y', 'z', '0', '1', '2', '3',
'4', '5', '6', '7', '8', '9', '+', '/'
};
/* Transform the 3x8 bits to 4x6 bits, as required by base64. */
for (i = 0; i < len; i += 3) {
*p++ = tbl[s[0] >> 2];
*p++ = tbl[((s[0] & 3) << 4) + (s[1] >> 4)];
*p++ = tbl[((s[1] & 0xf) << 2) + (s[2] >> 6)];
*p++ = tbl[s[2] & 0x3f];
s += 3;
}
/* Pad the result if necessary... */
if (i == len + 1)
*(p - 1) = '=';
else if (i == len + 2)
*(p - 1) = *(p - 2) = '=';
/* ...and zero-terminate it. */
*p = '\0';
return ret;
}
static char *authString(const char *header,
const char *user, const char *password)
{
char *ret = NULL;
int templen;
char *temp;
char *temp64;
if (!user || !password)
return NULL;
templen = strlen(user) + strlen(password) + 2;
temp = xmalloc(templen);
strcpy(temp, user);
strcat(temp, ":");
strcat(temp, password);
temp64 = base64Dup(temp);
free(temp);
ret = xmalloc(strlen(temp64) + strlen(header) + 3);
strcpy(ret, header);
strcat(ret, temp64);
strcat(ret, "\r\n");
free(temp64);
return ret;
}
#define PROXY_AUTH_HEADER "Proxy-Authorization: Basic "
#define HTTP_AUTH_HEADER "Authorization: Basic "
#define proxyAuthString(x, y) authString(PROXY_AUTH_HEADER, x, y)
#define httpAuthString(x, y) authString(HTTP_AUTH_HEADER, x, y)
#endif /* INPUT_STREAM_HTTP_AUTH_H */
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