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/*
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 * HTTP authentication
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 * Copyright (c) 2010 Martin Storsjo
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 *
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 * This file is part of Libav.
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 *
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 * Libav is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU Lesser General Public
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 * License as published by the Free Software Foundation; either
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 * version 2.1 of the License, or (at your option) any later version.
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 *
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 * Libav 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 GNU
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 * Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public
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 * License along with Libav; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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 */
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#ifndef AVFORMAT_HTTPAUTH_H
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#define AVFORMAT_HTTPAUTH_H
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/**
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 * Authentication types, ordered from weakest to strongest.
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 */
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typedef enum HTTPAuthType {
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    HTTP_AUTH_NONE = 0,    /**< No authentication specified */
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    HTTP_AUTH_BASIC,       /**< HTTP 1.0 Basic auth from RFC 1945
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                             *  (also in RFC 2617) */
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    HTTP_AUTH_DIGEST,      /**< HTTP 1.1 Digest auth from RFC 2617 */
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} HTTPAuthType;
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typedef struct {
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    char nonce[300];       /**< Server specified nonce */
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    char algorithm[10];    /**< Server specified digest algorithm */
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    char qop[30];          /**< Quality of protection, containing the one
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                             *  that we've chosen to use, from the
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                             *  alternatives that the server offered. */
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    char opaque[300];      /**< A server-specified string that should be
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                             *  included in authentication responses, not
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                             *  included in the actual digest calculation. */
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    int nc;                /**< Nonce count, the number of earlier replies
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                             *  where this particular nonce has been used. */
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} DigestParams;
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/**
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 * HTTP Authentication state structure. Must be zero-initialized
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 * before used with the functions below.
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 */
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typedef struct {
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    /**
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     * The currently chosen auth type.
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     */
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    HTTPAuthType auth_type;
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    /**
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     * Authentication realm
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     */
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    char realm[200];
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    /**
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     * The parameters specifiec to digest authentication.
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     */
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    DigestParams digest_params;
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} HTTPAuthState;
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void ff_http_auth_handle_header(HTTPAuthState *state, const char *key,
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                                const char *value);
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char *ff_http_auth_create_response(HTTPAuthState *state, const char *auth,
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                                   const char *path, const char *method);
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#endif /* AVFORMAT_HTTPAUTH_H */