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#include <string.h>
#include "x-authority.h"
#include "x-common.h"
typedef struct
{
GList *records;
} XAuthorityPrivate;
typedef struct
{
guint16 family;
guint16 address_length;
guint8 *address;
gchar *number;
gchar *authorization_name;
guint16 authorization_data_length;
guint8 *authorization_data;
} XAuthorityRecordPrivate;
G_DEFINE_TYPE_WITH_PRIVATE (XAuthority, x_authority, G_TYPE_OBJECT)
G_DEFINE_TYPE_WITH_PRIVATE (XAuthorityRecord, x_authority_record, G_TYPE_OBJECT)
XAuthority *
x_authority_new (void)
{
return g_object_new (x_authority_get_type (), NULL);
}
gboolean
x_authority_load (XAuthority *authority, const gchar *filename, GError **error)
{
XAuthorityPrivate *priv = x_authority_get_instance_private (authority);
guint8 *xauth_data;
gsize xauth_length;
if (!g_file_get_contents (filename, (gchar **) &xauth_data, &xauth_length, error))
return FALSE;
gsize offset = 0;
while (offset < xauth_length)
{
XAuthorityRecord *record = g_object_new (x_authority_record_get_type (), NULL);
XAuthorityRecordPrivate *r_priv = x_authority_record_get_instance_private (record);
r_priv->family = read_card16 (xauth_data, xauth_length, X_BYTE_ORDER_MSB, &offset);
r_priv->address_length = read_card16 (xauth_data, xauth_length, X_BYTE_ORDER_MSB, &offset);
r_priv->address = read_string8 (xauth_data, xauth_length, r_priv->address_length, &offset);
guint16 length = read_card16 (xauth_data, xauth_length, X_BYTE_ORDER_MSB, &offset);
r_priv->number = (gchar *) read_string8 (xauth_data, xauth_length, length, &offset);
length = read_card16 (xauth_data, xauth_length, X_BYTE_ORDER_MSB, &offset);
r_priv->authorization_name = (gchar *) read_string8 (xauth_data, xauth_length, length, &offset);
r_priv->authorization_data_length = read_card16 (xauth_data, xauth_length, X_BYTE_ORDER_MSB, &offset);
r_priv->authorization_data = read_string8 (xauth_data, xauth_length, r_priv->authorization_data_length, &offset);
priv->records = g_list_append (priv->records, record);
}
return TRUE;
}
XAuthorityRecord *
x_authority_match_local (XAuthority *authority, const gchar *authorization_name)
{
XAuthorityPrivate *priv = x_authority_get_instance_private (authority);
for (GList *link = priv->records; link; link = link->next)
{
XAuthorityRecord *record = link->data;
XAuthorityRecordPrivate *r_priv = x_authority_record_get_instance_private (record);
if (strcmp (r_priv->authorization_name, authorization_name) != 0)
continue;
if (r_priv->family == XAUTH_FAMILY_WILD || r_priv->family == XAUTH_FAMILY_LOCAL)
return record;
}
return NULL;
}
XAuthorityRecord *
x_authority_match_localhost (XAuthority *authority, const gchar *authorization_name)
{
XAuthorityPrivate *priv = x_authority_get_instance_private (authority);
for (GList *link = priv->records; link; link = link->next)
{
XAuthorityRecord *record = link->data;
XAuthorityRecordPrivate *r_priv = x_authority_record_get_instance_private (record);
if (strcmp (r_priv->authorization_name, authorization_name) != 0)
continue;
if (r_priv->family == XAUTH_FAMILY_WILD || r_priv->family == XAUTH_FAMILY_LOCALHOST)
return record;
}
return NULL;
}
XAuthorityRecord *
x_authority_match_inet (XAuthority *authority, GInetAddress *address, const gchar *authorization_name)
{
XAuthorityPrivate *priv = x_authority_get_instance_private (authority);
guint16 family;
switch (g_inet_address_get_family (address))
{
case G_SOCKET_FAMILY_IPV4:
family = XAUTH_FAMILY_INTERNET;
break;
case G_SOCKET_FAMILY_IPV6:
family = XAUTH_FAMILY_INTERNET6;
break;
default:
return NULL;
}
gssize address_data_length = g_inet_address_get_native_size (address);
const guint8 *address_data = g_inet_address_to_bytes (address);
for (GList *link = priv->records; link; link = link->next)
{
XAuthorityRecord *record = link->data;
XAuthorityRecordPrivate *r_priv = x_authority_record_get_instance_private (record);
if (strcmp (r_priv->authorization_name, authorization_name) != 0)
continue;
if (r_priv->family == XAUTH_FAMILY_WILD)
return record;
if (r_priv->family != family)
continue;
if (r_priv->address_length != address_data_length)
continue;
gboolean matches = TRUE;
for (int i = 0; i < address_data_length; i++)
{
if (address_data[i] != r_priv->address[i])
{
matches = FALSE;
break;
}
}
if (matches)
return record;
}
return NULL;
}
static void
x_authority_init (XAuthority *authority)
{
}
static void
x_authority_finalize (GObject *object)
{
XAuthority *authority = (XAuthority *) object;
XAuthorityPrivate *priv = x_authority_get_instance_private (authority);
g_list_free_full (priv->records, g_object_unref);
}
static void
x_authority_class_init (XAuthorityClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->finalize = x_authority_finalize;
}
guint16
x_authority_record_get_authorization_data_length (XAuthorityRecord *record)
{
XAuthorityRecordPrivate *priv = x_authority_record_get_instance_private (record);
return priv->authorization_data_length;
}
const guint8 *
x_authority_record_get_authorization_data (XAuthorityRecord *record)
{
XAuthorityRecordPrivate *priv = x_authority_record_get_instance_private (record);
return priv->authorization_data;
}
gboolean
x_authority_record_check_cookie (XAuthorityRecord *record, const guint8 *cookie_data, guint16 cookie_data_length)
{
XAuthorityRecordPrivate *priv = x_authority_record_get_instance_private (record);
if (strcmp (priv->authorization_name, "MIT-MAGIC-COOKIE-1") != 0)
return FALSE;
if (cookie_data_length != priv->authorization_data_length)
return FALSE;
for (guint16 i = 0; i < cookie_data_length; i++)
if (cookie_data[i] != priv->authorization_data[i])
return FALSE;
return TRUE;
}
static void
x_authority_record_init (XAuthorityRecord *record)
{
}
static void
x_authority_record_finalize (GObject *object)
{
XAuthorityRecord *record = (XAuthorityRecord *) object;
XAuthorityRecordPrivate *priv = x_authority_record_get_instance_private (record);
g_free (priv->address);
g_free (priv->number);
g_free (priv->authorization_name);
g_free (priv->authorization_data);
}
static void
x_authority_record_class_init (XAuthorityRecordClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->finalize = x_authority_record_finalize;
}
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