client.h 3.98 KB
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/* Icecast
 *
 * This program is distributed under the GNU General Public License, version 2.
 * A copy of this license is included with this source.
 *
 * Copyright 2000-2004, Jack Moffitt <jack@xiph.org, 
 *                      Michael Smith <msmith@xiph.org>,
 *                      oddsock <oddsock@xiph.org>,
 *                      Karl Heyes <karl@xiph.org>
 *                      and others (see AUTHORS for details).
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 * Copyright 2011-2018, Philipp "ph3-der-loewe" Schafft <lion@lion.leolix.org>,
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 */

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/* client.h
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 **
 ** client data structions and function definitions
 **
 */
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#ifndef __CLIENT_H__
#define __CLIENT_H__

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#include "common/httpp/httpp.h"
#include "common/httpp/encoding.h"

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#include "icecasttypes.h"
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#include "errors.h"
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#include "refbuf.h"
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#include "module.h"
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#define CLIENT_DEFAULT_ADMIN_FORMAT                     ADMIN_FORMAT_TRANSFORMED

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typedef enum _protocol_tag {
    ICECAST_PROTOCOL_HTTP = 0,
    ICECAST_PROTOCOL_SHOUTCAST
} protocol_t;

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typedef enum _reuse_tag {
    /* do not reuse */
    ICECAST_REUSE_CLOSE = 0,
    /* reuse */
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    ICECAST_REUSE_KEEPALIVE,
    /* Upgrade to TLS */
    ICECAST_REUSE_UPGRADETLS
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} reuse_t;

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typedef enum {
    CLIENT_SLURP_ERROR,
    CLIENT_SLURP_NEEDS_MORE_DATA,
    CLIENT_SLURP_BUFFER_TO_SMALL,
    CLIENT_SLURP_SUCCESS
} client_slurp_result_t;

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struct _client_tag {
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    /* mode of operation for this client */
    operation_mode mode;

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    /* the client's connection */
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    connection_t *con;
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    /* Reuse this connection ... */
    reuse_t reuse;

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    /* the client's http headers */
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    http_parser_t *parser;
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    /* Transfer Encoding if any */
    httpp_encoding_t *encoding;

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    /* protocol client uses */
    protocol_t protocol;

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    /* http request body length
     * -1 for streaming (e.g. chunked), 0 for no body, >0 for NNN bytes
     */
    ssize_t request_body_length;

    /* http request body length read so far */
    size_t request_body_read;

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    /* http response code for this client */
    int respcode;
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    /* admin command if any. ADMIN_COMMAND_ERROR if not an admin command. */
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    admin_command_id_t admin_command;
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    /* authentication instances we still need to go thru */
    struct auth_stack_tag *authstack;

    /* Client username */
    char *username;

    /* Client password */
    char *password;

    /* Client role */
    char *role;

    /* active ACL, set as soon as the client is authenticated */
    acl_t *acl;
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    /* Handler module and function */
    module_t *handler_module;
    char *handler_function;

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    /* is client getting intro data */
    long intro_offset;
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    /* where in the queue the client is */
    refbuf_t *refbuf;

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    /* position in first buffer */
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    unsigned int pos;
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    /* auth used for this client */
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    auth_t *auth;
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    /* Format-handler-specific data for this client */
    void *format_data;
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    /* function to call to release format specific resources */
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    void (*free_client_data)(client_t *client);
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    /* write out data associated with client */
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    int (*write_to_client)(client_t *client);
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    /* function to check if refbuf needs updating */
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    int (*check_buffer)(source_t *source, client_t *client);
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};
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int client_create (client_t **c_ptr, connection_t *con, http_parser_t *parser);
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void client_destroy(client_t *client);
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void client_send_error_by_id(client_t *client, icecast_error_id_t id);
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void client_send_101(client_t *client, reuse_t reuse);
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void client_send_204(client_t *client);
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void client_send_426(client_t *client, reuse_t reuse);
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admin_format_t client_get_admin_format_by_content_negotiation(client_t *client);
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int client_send_bytes (client_t *client, const void *buf, unsigned len);
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int client_read_bytes (client_t *client, void *buf, unsigned len);
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void client_set_queue (client_t *client, refbuf_t *refbuf);
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ssize_t client_body_read(client_t *client, void *buf, size_t len);
int client_body_eof(client_t *client);
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client_slurp_result_t client_body_slurp(client_t *client, void *buf, size_t *len);
client_slurp_result_t client_body_skip(client_t *client);
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#endif  /* __CLIENT_H__ */