/* This file is part of Eclat.
   Copyright (C) 2012 Sergey Poznyakoff.
 
   Eclat 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.
 
   Eclat 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 Eclat.  If not, see <http://www.gnu.org/licenses/>. */

#include <stddef.h>

void hmac_sha1(const void *text, size_t textlen,
	       const void *key, size_t keylen,
	       void *digest);
void urlencode(const char *input, size_t len,
	       char **poutput, size_t *poutlen);

void eclat_base64_encode(const unsigned char *input, size_t input_len,
			 unsigned char **output, size_t *output_len);
int eclat_base64_decode(const unsigned char *input, size_t input_len,
			unsigned char **output, size_t *output_len);


struct ec2_param {
	char *name;
	char *value;
};

#define EC2_API_VERSION "2012-08-15"

#define EC2_QF_HTTPS 0x01
#define EC2_QF_POST  0x02

struct ec2_query {
	int flags;       /* Composed from EC2_QF_* bits */
	char *endpoint;  /* endpoint  */
	char *uri;       /* URI without parameters */
	struct grecs_symtab *params; /* Query parameters */
	char *signature;
	unsigned long ttl; /* Time-to-live in seconds */
};

struct ec2_query *eclat_query_create(int flags, const char *endpoint,
				     const char *uri);
void eclat_query_free(struct ec2_query *);

int eclat_query_signature(struct ec2_query *req, char *secret);

char *eclat_query_to_url(struct ec2_query *req, char **post_params);

void eclat_query_encode(struct ec2_query *q);