149 lines
3.4 KiB
C
149 lines
3.4 KiB
C
/*
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This file is part of TALER
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Copyright (C) 2015, 2016, 2017 GNUnet e.V.
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TALER is free software; you can redistribute it and/or modify it under the
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terms of the GNU General Public License as published by the Free Software
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Foundation; either version 3, or (at your option) any later version.
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TALER is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along with
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TALER; see the file COPYING. If not, see
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<http://www.gnu.org/licenses/>
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*/
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/**
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* @file bank-lib/bank_api_common.c
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* @brief Common functions for the bank API
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* @author Christian Grothoff
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*/
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#include "platform.h"
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#include "bank_api_common.h"
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/**
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* Append HTTP key-value pair to curl header list.
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*
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* @param hdr list to append to, can be NULL
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* @param key key to append
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* @param value value to append
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* @return new list, NULL on error
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*/
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static struct curl_slist *
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append (struct curl_slist *hdr,
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const char *key,
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const char *value)
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{
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char *str;
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struct curl_slist *ret;
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GNUNET_asprintf (&str,
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"%s: %s",
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key,
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value);
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ret = curl_slist_append (hdr,
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str);
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GNUNET_free (str);
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if (NULL == ret)
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{
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GNUNET_break (0);
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curl_slist_free_all (hdr);
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return NULL;
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}
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return ret;
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}
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/**
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* Build authentication header from @a auth.
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*
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* @param auth authentication data to use.
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*
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* @return NULL on error, otherwise curl headers to use.
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*/
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struct curl_slist *
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TALER_BANK_make_auth_header_
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(const struct TALER_BANK_AuthenticationData *auth)
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{
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struct curl_slist *authh;
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switch (auth->method)
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{
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case TALER_BANK_AUTH_NONE:
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return NULL;
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case TALER_BANK_AUTH_BASIC:
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authh = append (NULL,
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"X-Taler-Bank-Username",
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auth->details.basic.username);
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if (NULL == authh)
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return NULL;
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authh = append (authh,
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"X-Taler-Bank-Password",
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auth->details.basic.password);
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return authh;
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}
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return NULL;
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}
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/**
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* Obtain the URL to use for an API request.
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*
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* @param u base URL of the bank.
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* @param path Taler API path (i.e. "/history").
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*
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* @return the full URL to use with cURL, must be
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* freed by the caller.
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*/
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char *
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TALER_BANK_path_to_url_ (const char *u,
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const char *path)
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{
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char *url;
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if ( ('/' == path[0]) &&
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(0 < strlen (u)) &&
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('/' == u[strlen (u) - 1]) )
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path++; /* avoid generating URL with "//" from concat */
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GNUNET_asprintf (&url,
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"%s%s",
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u,
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path);
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return url;
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}
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/**
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* Parse error code given in @a json.
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*
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* @param json the json to parse.
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*
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* @return error code, or #TALER_EC_INVALID if not found.
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*/
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enum TALER_ErrorCode
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TALER_BANK_parse_ec_ (const json_t *json)
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{
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uint32_t ec;
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struct GNUNET_JSON_Specification spec[] = {
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GNUNET_JSON_spec_uint32 ("ec",
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&ec),
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GNUNET_JSON_spec_end()
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};
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if (GNUNET_OK !=
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GNUNET_JSON_parse (json,
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spec,
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NULL, NULL))
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{
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GNUNET_break_op (0);
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return TALER_EC_INVALID;
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}
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return (enum TALER_ErrorCode) ec;
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}
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/* end of bank_api_common.c */
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