1 /*
2  * HTTP authentication
3  * Copyright (c) 2010 Martin Storsjo
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
22 #ifndef AVFORMAT_HTTPAUTH_H
23 #define AVFORMAT_HTTPAUTH_H
24 
25 /**
26  * Authentication types, ordered from weakest to strongest.
27  */
28 typedef enum HTTPAuthType {
29     HTTP_AUTH_NONE = 0,    /**< No authentication specified */
30     HTTP_AUTH_BASIC,       /**< HTTP 1.0 Basic auth from RFC 1945
31                              *  (also in RFC 2617) */
32     HTTP_AUTH_DIGEST,      /**< HTTP 1.1 Digest auth from RFC 2617 */
33 } HTTPAuthType;
34 
35 typedef struct DigestParams {
36     char nonce[300];       /**< Server specified nonce */
37     char algorithm[10];    /**< Server specified digest algorithm */
38     char qop[30];          /**< Quality of protection, containing the one
39                              *  that we've chosen to use, from the
40                              *  alternatives that the server offered. */
41     char opaque[300];      /**< A server-specified string that should be
42                              *  included in authentication responses, not
43                              *  included in the actual digest calculation. */
44     char stale[10];        /**< The server indicated that the auth was ok,
45                              * but needs to be redone with a new, non-stale
46                              * nonce. */
47     int nc;                /**< Nonce count, the number of earlier replies
48                              *  where this particular nonce has been used. */
49 } DigestParams;
50 
51 /**
52  * HTTP Authentication state structure. Must be zero-initialized
53  * before used with the functions below.
54  */
55 typedef struct HTTPAuthState {
56     /**
57      * The currently chosen auth type.
58      */
59     HTTPAuthType auth_type;
60     /**
61      * Authentication realm
62      */
63     char realm[200];
64     /**
65      * The parameters specifiec to digest authentication.
66      */
67     DigestParams digest_params;
68     /**
69      * Auth ok, but needs to be resent with a new nonce.
70      */
71     int stale;
72 } HTTPAuthState;
73 
74 void ff_http_auth_handle_header(HTTPAuthState *state, const char *key,
75                                 const char *value);
76 char *ff_http_auth_create_response(HTTPAuthState *state, const char *auth,
77                                    const char *path, const char *method);
78 
79 #endif /* AVFORMAT_HTTPAUTH_H */
80