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/*
This file is part of TALER
Copyright (C) 2019 Taler Systems SA
TALER is free software; you can redistribute it and/or modify it
under the terms of the GNU 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 General Public License for more details.
You should have received a copy of the GNU General Public
License along with TALER; see the file COPYING. If not, see
<http://www.gnu.org/licenses/>
*/
/**
* @file taler_curl_lib.h
* @brief Helper routines shared by libtalerexchange and libtalerauditor
* @author Christian Grothoff
*/
#ifndef TALER_CURL_LIB_H
#define TALER_CURL_LIB_H
#include <gnunet/gnunet_curl_lib.h>
#include "taler_json_lib.h"
/**
* Should we compress PUT/POST bodies with 'deflate' encoding?
*/
#define TALER_CURL_COMPRESS_BODIES 1
/**
* State used for #TALER_curl_easy_post() and
* #TALER_curl_easy_post_finished().
*/
struct TALER_CURL_PostContext
{
/**
* JSON encoding of the request to POST.
*/
char *json_enc;
/**
* Custom headers.
*/
struct curl_slist *headers;
/**
* Set to true to disable compression of the body.
*/
bool disable_compression;
};
/**
* Add the @a body as POST data to the easy handle in
* @a ctx.
*
* @param[in,out] ctx a request context (updated)
* @param eh easy handle to use
* @param body JSON body to add to @e ctx
* @return #GNUNET_OK on success #GNUNET_SYSERR on failure
*/
enum GNUNET_GenericReturnValue
TALER_curl_easy_post (struct TALER_CURL_PostContext *ctx,
CURL *eh,
const json_t *body);
/**
* Free the data in @a ctx.
*
* @param[in] ctx a request context (updated)
*/
void
TALER_curl_easy_post_finished (struct TALER_CURL_PostContext *ctx);
/**
* Set a secure redirection policy, allowing a limited
* number of redirects and only going from HTTP to HTTPS
* but not from HTTPS to HTTP.
*
* @param[in,out] eh easy handle to modify
* @param url URL to base the redirect policy on;
* must start with "http://" or "https://"
*/
void
TALER_curl_set_secure_redirect_policy (CURL *eh,
const char *url);
#endif
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