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author | Christian Grothoff <christian@grothoff.org> | 2015-11-25 13:38:54 +0100 |
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committer | Christian Grothoff <christian@grothoff.org> | 2015-11-25 13:38:54 +0100 |
commit | 8e8e59917a09298f0e8d46884a93bef14c2ae98b (patch) | |
tree | 8c952f44255f8f87f18399a6431568b3124c0d6e /src/backend/taler-merchant-httpd_responses.c | |
parent | 0a073f8bf4b6611c4436d093deef7631c643f5bf (diff) | |
download | merchant-8e8e59917a09298f0e8d46884a93bef14c2ae98b.tar.gz merchant-8e8e59917a09298f0e8d46884a93bef14c2ae98b.tar.bz2 merchant-8e8e59917a09298f0e8d46884a93bef14c2ae98b.zip |
rename fest to satisfy naming conventions
Diffstat (limited to 'src/backend/taler-merchant-httpd_responses.c')
-rw-r--r-- | src/backend/taler-merchant-httpd_responses.c | 206 |
1 files changed, 206 insertions, 0 deletions
diff --git a/src/backend/taler-merchant-httpd_responses.c b/src/backend/taler-merchant-httpd_responses.c new file mode 100644 index 00000000..1e2902c2 --- /dev/null +++ b/src/backend/taler-merchant-httpd_responses.c @@ -0,0 +1,206 @@ +/* + This file is part of TALER + Copyright (C) 2014, 2015 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-merchant-httpd_responses.c + * @brief API for generating the various replies of the mint; these + * functions are called TMH_RESPONSE_reply_ and they generate + * and queue MHD response objects for a given connection. + * @author Florian Dold + * @author Benedikt Mueller + * @author Christian Grothoff + */ +#include "platform.h" +#include "taler-merchant-httpd_responses.h" +#include <taler/taler_util.h> +#include <gnunet/gnunet_util_lib.h> + + +/** + * Send JSON object as response. + * + * @param connection the MHD connection + * @param json the json object + * @param response_code the http response code + * @return MHD result code + */ +int +TMH_RESPONSE_reply_json (struct MHD_Connection *connection, + const json_t *json, + unsigned int response_code) +{ + struct MHD_Response *resp; + char *json_str; + int ret; + + json_str = json_dumps (json, JSON_INDENT(2)); + GNUNET_assert (NULL != json_str); + resp = MHD_create_response_from_buffer (strlen (json_str), json_str, + MHD_RESPMEM_MUST_FREE); + if (NULL == resp) + { + free (json_str); + GNUNET_break (0); + return MHD_NO; + } + (void) MHD_add_response_header (resp, + MHD_HTTP_HEADER_CONTENT_TYPE, + "application/json"); + ret = MHD_queue_response (connection, + response_code, + resp); + MHD_destroy_response (resp); + return ret; +} + + +/** + * Function to call to handle the request by building a JSON + * reply from a format string and varargs. + * + * @param connection the MHD connection to handle + * @param response_code HTTP response code to use + * @param fmt format string for pack + * @param ... varargs + * @return MHD result code + */ +int +TMH_RESPONSE_reply_json_pack (struct MHD_Connection *connection, + unsigned int response_code, + const char *fmt, + ...) +{ + json_t *json; + va_list argp; + int ret; + json_error_t jerror; + + va_start (argp, fmt); + json = json_vpack_ex (&jerror, 0, fmt, argp); + va_end (argp); + if (NULL == json) + { + GNUNET_log (GNUNET_ERROR_TYPE_ERROR, + "Failed to pack JSON with format `%s': %s\n", + fmt, + jerror.text); + GNUNET_break (0); + return MHD_NO; + } + ret = TMH_RESPONSE_reply_json (connection, + json, + response_code); + json_decref (json); + return ret; +} + +/** + * Send a response indicating an internal error. + * + * @param connection the MHD connection to use + * @param hint hint about the internal error's nature + * @return a MHD result code + */ +int +TMH_RESPONSE_reply_internal_error (struct MHD_Connection *connection, + const char *hint) +{ + return TMH_RESPONSE_reply_json_pack (connection, + MHD_HTTP_INTERNAL_SERVER_ERROR, + "{s:s, s:s}", + "error", "internal error", + "hint", hint); +} + +/** + * Send a response indicating that the request was too big. + * + * @param connection the MHD connection to use + * @return a MHD result code + */ +int +TMH_RESPONSE_reply_request_too_large (struct MHD_Connection *connection) +{ + struct MHD_Response *resp; + int ret; + + resp = MHD_create_response_from_buffer (0, + NULL, + MHD_RESPMEM_PERSISTENT); + if (NULL == resp) + return MHD_NO; + ret = MHD_queue_response (connection, + MHD_HTTP_REQUEST_ENTITY_TOO_LARGE, + resp); + MHD_destroy_response (resp); + return ret; +} + + +/** + * Send a response indicating that the JSON was malformed. + * + * @param connection the MHD connection to use + * @return a MHD result code + */ +int +TMH_RESPONSE_reply_invalid_json (struct MHD_Connection *connection) +{ + return TMH_RESPONSE_reply_json_pack (connection, + MHD_HTTP_BAD_REQUEST, + "{s:s}", + "error", + "invalid json"); +} + +/** + * Add headers we want to return in every response. + * Useful for testing, like if we want to always close + * connections. + * + * @param response response to modify + */ +void +TMH_RESPONSE_add_global_headers (struct MHD_Response *response) +{ + int TMH_mint_connection_close; + TMH_mint_connection_close = 0; + + /* this test is taken verbatim from the mint's code, + so there is no particular need to do that for a merchant */ + if (TMH_mint_connection_close) + (void) MHD_add_response_header (response, + MHD_HTTP_HEADER_CONNECTION, + "close"); +} + +/** + * Send a response indicating an external error. + * + * @param connection the MHD connection to use + * @param hint hint about the error's nature + * @return a MHD result code + */ +int +TMH_RESPONSE_reply_external_error (struct MHD_Connection *connection, + const char *hint) +{ + return TMH_RESPONSE_reply_json_pack (connection, + MHD_HTTP_BAD_REQUEST, + "{s:s, s:s}", + "error", "client error", + "hint", hint); +} +/* end of taler-mint-httpd_responses.c */ |