gstreamer/gst/rtsp-server/rtsp-token.c

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/* GStreamer
* Copyright (C) 2010 Wim Taymans <wim.taymans at gmail.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
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/**
* SECTION:rtsp-token
* @short_description: Roles and permissions for a client
* @see_also: #GstRTSPClient, #GstRTSPPermission, #GstRTSPAuth
*
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* A #GstRTSPToken contains the permissions and roles of the user
* performing the current request. A token is usually created when a user is
* authenticated by the #GstRTSPAuth object and is then placed as the current
* token for the current request.
*
* #GstRTSPAuth can use the token and its contents to check authorization for
* various operations by comparing the token to the #GstRTSPPermissions of the
* object.
*
* The accepted values of the token are entirely defined by the #GstRTSPAuth
* object that implements the security policy.
*
* Last reviewed on 2013-07-15 (1.0.0)
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*/
#include <string.h>
#include "rtsp-token.h"
typedef struct _GstRTSPTokenImpl
{
GstRTSPToken token;
GstStructure *structure;
} GstRTSPTokenImpl;
#define GST_RTSP_TOKEN_STRUCTURE(t) (((GstRTSPTokenImpl *)(t))->structure)
//GST_DEBUG_CATEGORY_STATIC (rtsp_token_debug);
//#define GST_CAT_DEFAULT rtsp_token_debug
GST_DEFINE_MINI_OBJECT_TYPE (GstRTSPToken, gst_rtsp_token);
static void gst_rtsp_token_init (GstRTSPTokenImpl * token,
GstStructure * structure);
static void
_gst_rtsp_token_free (GstRTSPToken * token)
{
GstRTSPTokenImpl *impl = (GstRTSPTokenImpl *) token;
gst_structure_set_parent_refcount (impl->structure, NULL);
gst_structure_free (impl->structure);
g_slice_free1 (sizeof (GstRTSPTokenImpl), token);
}
static GstRTSPToken *
_gst_rtsp_token_copy (GstRTSPTokenImpl * token)
{
GstRTSPTokenImpl *copy;
GstStructure *structure;
structure = gst_structure_copy (token->structure);
copy = g_slice_new0 (GstRTSPTokenImpl);
gst_rtsp_token_init (copy, structure);
return (GstRTSPToken *) copy;
}
static void
gst_rtsp_token_init (GstRTSPTokenImpl * token, GstStructure * structure)
{
gst_mini_object_init (GST_MINI_OBJECT_CAST (token), 0,
GST_TYPE_RTSP_TOKEN,
(GstMiniObjectCopyFunction) _gst_rtsp_token_copy, NULL,
(GstMiniObjectFreeFunction) _gst_rtsp_token_free);
token->structure = structure;
gst_structure_set_parent_refcount (token->structure,
&token->token.mini_object.refcount);
}
/**
* gst_rtsp_token_new_empty:
*
* Create a new empty Authorization token.
*
* Returns: (transfer full): a new empty authorization token.
*/
GstRTSPToken *
gst_rtsp_token_new_empty (void)
{
GstRTSPTokenImpl *token;
GstStructure *s;
s = gst_structure_new_empty ("GstRTSPToken");
g_return_val_if_fail (s != NULL, NULL);
token = g_slice_new0 (GstRTSPTokenImpl);
gst_rtsp_token_init (token, s);
return (GstRTSPToken *) token;
}
/**
* gst_rtsp_token_new:
* @firstfield: the first fieldname
* @...: additional arguments
*
* Create a new Authorization token with the given fieldnames and values.
* Arguments are given similar to gst_structure_new().
*
* Returns: (transfer full): a new authorization token.
*/
GstRTSPToken *
gst_rtsp_token_new (const gchar * firstfield, ...)
{
GstRTSPToken *result;
va_list var_args;
va_start (var_args, firstfield);
result = gst_rtsp_token_new_valist (firstfield, var_args);
va_end (var_args);
return result;
}
/**
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* gst_rtsp_token_new_valist:
* @firstfield: the first fieldname
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* @var_args: additional arguments
*
* Create a new Authorization token with the given fieldnames and values.
* Arguments are given similar to gst_structure_new_valist().
*
* Returns: (transfer full): a new authorization token.
*/
GstRTSPToken *
gst_rtsp_token_new_valist (const gchar * firstfield, va_list var_args)
{
GstRTSPToken *token;
GstStructure *s;
g_return_val_if_fail (firstfield != NULL, NULL);
token = gst_rtsp_token_new_empty ();
s = GST_RTSP_TOKEN_STRUCTURE (token);
gst_structure_set_valist (s, firstfield, var_args);
return token;
}
/**
* gst_rtsp_token_get_structure:
* @token: The #GstRTSPToken.
*
* Access the structure of the token.
*
* Returns: The structure of the token. The structure is still
* owned by the token, which means that you should not free it and
* that the pointer becomes invalid when you free the token.
*
* MT safe.
*/
const GstStructure *
gst_rtsp_token_get_structure (GstRTSPToken * token)
{
g_return_val_if_fail (GST_IS_RTSP_TOKEN (token), NULL);
return GST_RTSP_TOKEN_STRUCTURE (token);
}
/**
* gst_rtsp_token_writable_structure:
* @token: The #GstRTSPToken.
*
* Get a writable version of the structure.
*
* Returns: The structure of the token. The structure is still
* owned by the token, which means that you should not free it and
* that the pointer becomes invalid when you free the token.
* This function checks if @token is writable and will never return NULL.
*
* MT safe.
*/
GstStructure *
gst_rtsp_token_writable_structure (GstRTSPToken * token)
{
g_return_val_if_fail (GST_IS_RTSP_TOKEN (token), NULL);
g_return_val_if_fail (gst_mini_object_is_writable (GST_MINI_OBJECT_CAST
(token)), NULL);
return GST_RTSP_TOKEN_STRUCTURE (token);
}
/**
* gst_rtsp_token_get_string:
* @token: a #GstRTSPToken
* @field: a field name
*
* Get the string value of @field in @token.
*
* Returns: the string value of @field in @token or NULL when @field is not
* defined in @token.
*/
const gchar *
gst_rtsp_token_get_string (GstRTSPToken * token, const gchar * field)
{
return gst_structure_get_string (GST_RTSP_TOKEN_STRUCTURE (token), field);
}
/**
* gst_rtsp_token_is_allowed:
* @token: a #GstRTSPToken
* @field: a field name
*
* Check if @token has a boolean @field and if it is set to %TRUE.
*
* Returns: %TRUE if @token has a boolean field named @field set to %TRUE.
*/
gboolean
gst_rtsp_token_is_allowed (GstRTSPToken * token, const gchar * field)
{
gboolean result;
g_return_val_if_fail (GST_IS_RTSP_TOKEN (token), FALSE);
g_return_val_if_fail (field != NULL, FALSE);
if (!gst_structure_get_boolean (GST_RTSP_TOKEN_STRUCTURE (token), field,
&result))
result = FALSE;
return result;
}