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/*
This file is part of TALER
Copyright (C) 2014 GNUnet e.V.
TALER is free software; you can redistribute it and/or modify it under the
terms of the GNU Affero General Public License as published by the Free Software
Foundation; either version 3, or (at your option) any later version.
TALER 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 Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License along with
TALER; see the file COPYING. If not, If not, see <http://www.gnu.org/licenses/>
*/
/**
* @file taler-mint-httpd_admin.c
* @brief Handle /admin/ requests
* @author Christian Grothoff
*/
#include "platform.h"
#include <gnunet/gnunet_util_lib.h>
#include <jansson.h>
#include "taler-mint-httpd_admin.h"
#include "taler-mint-httpd_parsing.h"
#include "taler-mint-httpd_responses.h"
/**
* Check permissions (we only allow access to /admin/ from loopback).
*
* @param connection connection to perform access check for
* @return #GNUNET_OK if permitted,
* #GNUNET_NO if denied and error was queued,
* #GNUNET_SYSERR if denied and we failed to report
*/
static int
check_permissions (struct MHD_Connection *connection)
{
const union MHD_ConnectionInfo *ci;
const struct sockaddr *addr;
int res;
ci = MHD_get_connection_info (connection,
MHD_CONNECTION_INFO_CLIENT_ADDRESS);
if (NULL == ci)
{
GNUNET_break (0);
res = TMH_RESPONSE_reply_internal_error (connection,
"Failed to verify client address");
return (MHD_YES == res) ? GNUNET_NO : GNUNET_SYSERR;
}
addr = ci->client_addr;
switch (addr->sa_family)
{
case AF_INET:
{
const struct sockaddr_in *sin = (const struct sockaddr_in *) addr;
if (INADDR_LOOPBACK != ntohl (sin->sin_addr.s_addr))
{
res = TMH_RESPONSE_reply_permission_denied (connection,
"/admin/ only allowed via loopback");
return (MHD_YES == res) ? GNUNET_NO : GNUNET_SYSERR;
}
break;
}
case AF_INET6:
{
const struct sockaddr_in6 *sin6 = (const struct sockaddr_in6 *) addr;
if (! IN6_IS_ADDR_LOOPBACK (&sin6->sin6_addr))
{
res = TMH_RESPONSE_reply_permission_denied (connection,
"/admin/ only allowed via loopback");
return (MHD_YES == res) ? GNUNET_NO : GNUNET_SYSERR;
}
break;
}
default:
GNUNET_break (0);
res = TMH_RESPONSE_reply_internal_error (connection,
"Unsupported AF");
return (MHD_YES == res) ? GNUNET_NO : GNUNET_SYSERR;
}
return GNUNET_OK;
}
/**
* Handle a "/admin/add/incoming" request. Parses the
* given "reserve_pub", "amount", "transaction" and "h_wire"
* details and adds the respective transaction to the database.
*
* @param rh context of the handler
* @param connection the MHD connection to handle
* @param[in,out] connection_cls the connection's closure (can be updated)
* @param upload_data upload data
* @param[in,out] upload_data_size number of bytes (left) in @a upload_data
* @return MHD result code
*/
int
TMH_ADMIN_handler_admin_add_incoming (struct TMH_RequestHandler *rh,
struct MHD_Connection *connection,
void **connection_cls,
const char *upload_data,
size_t *upload_data_size)
{
struct TALER_ReservePublicKeyP reserve_pub;
struct TALER_Amount amount;
struct GNUNET_TIME_Absolute at;
json_t *wire;
json_t *root;
struct TMH_PARSE_FieldSpecification spec[] = {
TMH_PARSE_MEMBER_FIXED ("reserve_pub", &reserve_pub),
TMH_PARSE_member_amount ("amount", &amount),
TMH_PARSE_member_time_abs ("execution_date", &at),
TMH_PARSE_member_object ("wire", &wire),
TMH_PARSE_MEMBER_END
};
int res;
res = check_permissions (connection);
if (GNUNET_OK != res)
return (GNUNET_NO == res) ? MHD_YES : MHD_NO;
res = TMH_PARSE_post_json (connection,
connection_cls,
upload_data,
upload_data_size,
&root);
if (GNUNET_SYSERR == res)
return MHD_NO;
if ( (GNUNET_NO == res) || (NULL == root) )
return MHD_YES;
res = TMH_PARSE_json_data (connection,
root,
spec);
if (GNUNET_OK != res)
{
json_decref (root);
return (GNUNET_SYSERR == res) ? MHD_NO : MHD_YES;
}
if (GNUNET_YES !=
TALER_json_validate_wireformat (TMH_expected_wire_format,
wire))
{
TMH_PARSE_release_data (spec);
return TMH_RESPONSE_reply_arg_unknown (connection,
"wire");
}
res = TMH_DB_execute_admin_add_incoming (connection,
&reserve_pub,
&amount,
at,
wire);
TMH_PARSE_release_data (spec);
json_decref (root);
return res;
}
/* end of taler-mint-httpd_admin.c */
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