// -*- mode: c; tab-width: 8; indent-tabs-mode: 1; st-rulers: [70] -*-
// vim: ts=8 sw=8 ft=c noet

#include "libsodium_api.h"
#include "libsodium_api_crypto_aead_aes256gcm.h"
#include "libsodium_api_crypto_aead_chacha20poly1305.h"
#include "libsodium_api_crypto_auth.h"
#include "libsodium_api_crypto_auth_hmacsha256.h"
#include "libsodium_api_crypto_auth_hmacsha512.h"
#include "libsodium_api_crypto_auth_hmacsha512256.h"
#include "libsodium_api_crypto_box.h"
#include "libsodium_api_crypto_box_curve25519xsalsa20poly1305.h"
#include "libsodium_api_crypto_core_hsalsa20.h"
#include "libsodium_api_crypto_core_salsa20.h"
#include "libsodium_api_crypto_core_salsa2012.h"
#include "libsodium_api_crypto_core_salsa208.h"
#include "libsodium_api_crypto_generichash.h"
#include "libsodium_api_crypto_generichash_blake2b.h"
#include "libsodium_api_crypto_hash.h"
#include "libsodium_api_crypto_hash_sha256.h"
#include "libsodium_api_crypto_hash_sha512.h"
#include "libsodium_api_crypto_onetimeauth.h"
#include "libsodium_api_crypto_onetimeauth_poly1305.h"
#include "libsodium_api_crypto_scalarmult.h"
#include "libsodium_api_crypto_scalarmult_curve25519.h"
#include "libsodium_api_crypto_shorthash.h"
#include "libsodium_api_crypto_shorthash_siphash24.h"
#include "libsodium_api_crypto_sign.h"
#include "libsodium_api_crypto_sign_ed25519.h"
#include "libsodium_api_crypto_stream.h"
#include "libsodium_api_crypto_stream_aes128ctr.h"
#include "libsodium_api_crypto_stream_chacha20.h"
#include "libsodium_api_crypto_stream_salsa20.h"
#include "libsodium_api_crypto_stream_salsa2012.h"
#include "libsodium_api_crypto_stream_salsa208.h"
#include "libsodium_api_crypto_stream_xsalsa20.h"
#include "libsodium_api_randombytes.h"
#include "libsodium_api_runtime.h"
#include "libsodium_api_utils.h"
#include "libsodium_api_version.h"

#define LS_NS(NAMESPACE)	{ #NAMESPACE, libsodium_functions_ ## NAMESPACE }

static libsodium_namespace_t	libsodium_namespaces[] = {
	LS_NS(crypto_aead_aes256gcm),
	LS_NS(crypto_aead_chacha20poly1305),
	LS_NS(crypto_auth),
	LS_NS(crypto_auth_hmacsha256),
	LS_NS(crypto_auth_hmacsha512),
	LS_NS(crypto_auth_hmacsha512256),
	LS_NS(crypto_box),
	LS_NS(crypto_box_curve25519xsalsa20poly1305),
	LS_NS(crypto_core_hsalsa20),
	LS_NS(crypto_core_salsa20),
	LS_NS(crypto_core_salsa2012),
	LS_NS(crypto_core_salsa208),
	LS_NS(crypto_generichash),
	LS_NS(crypto_generichash_blake2b),
	LS_NS(crypto_hash),
	LS_NS(crypto_hash_sha256),
	LS_NS(crypto_hash_sha512),
	LS_NS(crypto_onetimeauth),
	LS_NS(crypto_onetimeauth_poly1305),
	LS_NS(crypto_scalarmult),
	LS_NS(crypto_scalarmult_curve25519),
	LS_NS(crypto_shorthash),
	LS_NS(crypto_shorthash_siphash24),
	LS_NS(crypto_sign),
	LS_NS(crypto_sign_ed25519),
	LS_NS(crypto_stream),
	LS_NS(crypto_stream_aes128ctr),
	LS_NS(crypto_stream_chacha20),
	LS_NS(crypto_stream_salsa20),
	LS_NS(crypto_stream_salsa2012),
	LS_NS(crypto_stream_salsa208),
	LS_NS(crypto_stream_xsalsa20),
	LS_NS(randombytes),
	LS_NS(runtime),
	LS_NS(utils),
	LS_NS(version),
	{NULL}
};

void
init_libsodium_api(void)
{
	libsodium_namespace_t *n;
	libsodium_function_t *f;

	n = NULL;
	f = NULL;

	for (n = libsodium_namespaces; n->namespace; n++) {
		n->am_namespace = driver_mk_atom((char *)(n->namespace));
		for (f = n->functions; f->function; f++) {
			f->am_function = driver_mk_atom((char *)(f->function));
		}
	}

	(void) init_libsodium_api_randombytes_implementation();
}

libsodium_function_t *
get_libsodium_api(const char *namespace, const char *function)
{
	libsodium_namespace_t *n;
	libsodium_function_t *f;
	ErlDrvTermData am_namespace;
	ErlDrvTermData am_function;

	n = NULL;
	f = NULL;

	// (void) erl_drv_mutex_lock(libsodium_mutex);
	am_namespace = driver_mk_atom((char *)namespace);
	am_function = driver_mk_atom((char *)function);
	// (void) erl_drv_mutex_unlock(libsodium_mutex);

	for (n = libsodium_namespaces; n->namespace; n++) {
		if (n->am_namespace == am_namespace) {
			for (f = n->functions; f->function; f++) {
				if (f->am_function == am_function) {
					return f;
				}
			}
			return NULL;
		}
	}

	return NULL;
}