libpurple/protocols/jabber/tests/test_jabber_scram.c

#include <string.h>

#include <purple.h>

#include "protocols/jabber/auth_scram.h"
#include "protocols/jabber/jutil.h"

static JabberScramHash sha1_mech = { "-SHA-1", G_CHECKSUM_SHA1 };

#define assert_pbkdf2_equal(password, salt, count, expected) { \
	GString *p = g_string_new(password); \
	GString *s = g_string_new(salt); \
	guchar *result = jabber_scram_hi(&sha1_mech, p, s, count); \
	g_assert_nonnull(result); \
	g_assert_cmpmem(result, 20, expected, 20); \
	g_string_free(s, TRUE); \
	g_string_free(p, TRUE); \
}

static void
test_jabber_scram_pbkdf2(void) {
	assert_pbkdf2_equal("password", "salt", 1, "\x0c\x60\xc8\x0f\x96\x1f\x0e\x71\xf3\xa9\xb5\x24\xaf\x60\x12\x06\x2f\xe0\x37\xa6");
	assert_pbkdf2_equal("password", "salt", 2, "\xea\x6c\x01\x4d\xc7\x2d\x6f\x8c\xcd\x1e\xd9\x2a\xce\x1d\x41\xf0\xd8\xde\x89\x57");
	assert_pbkdf2_equal("password", "salt", 4096, "\x4b\x00\x79\x01\xb7\x65\x48\x9a\xbe\xad\x49\xd9\x26\xf7\x21\xd0\x65\xa4\x29\xc1");
	/* This test is insane and takes forever, so it's disabled */
	/*
	assert_pbkdf2_equal("password", "salt", 16777216, "\xee\xfe\x3d\x61\xcd\x4d\xa4\xe4\xe9\x94\x5b\x3d\x6b\xa2\x15\x8c\x26\x34\xe9\x84");
	*/
}

static void
test_jabber_scram_proofs(void) {
	JabberScramData *data = g_new0(JabberScramData, 1);
	gboolean ret;
	GString *salt;
	const char *client_proof;
/*	const char *server_signature; */

	data->hash = &sha1_mech;
	data->password = g_strdup("password");
	data->auth_message = g_string_new("n=username@jabber.org,r=8jLxB5515dhFxBil5A0xSXMH,"
			"r=8jLxB5515dhFxBil5A0xSXMHabc,s=c2FsdA==,i=1,"
			"c=biws,r=8jLxB5515dhFxBil5A0xSXMHabc");
	client_proof = "\x48\x61\x30\xa5\x61\x0b\xae\xb9\xe4\x11\xa8\xfd\xa5\xcd\x34\x1d\x8a\x3c\x28\x17";

	salt = g_string_new("salt");
	ret = jabber_scram_calc_proofs(data, salt, 1);
	g_assert_true(ret);

	g_assert_cmpmem(client_proof, 20, data->client_proof->str, 20);
	g_string_free(salt, TRUE);

	jabber_scram_data_destroy(data);
}

#define assert_successful_exchange(pw, nonce, start_data, challenge1, response1, success) { \
	JabberScramData *data = g_new0(JabberScramData, 1); \
	gboolean ret; \
	gchar *out; \
	\
	data->step = 1; \
	data->hash = &sha1_mech; \
	data->password = jabber_saslprep(pw); \
	g_assert_nonnull(data->password); \
	data->cnonce = g_strdup(nonce); \
	data->auth_message = g_string_new(start_data); \
	\
	ret = jabber_scram_feed_parser(data, challenge1, &out); \
	g_assert_true(ret); \
	g_assert_cmpstr(response1, ==, out); \
	g_free(out); \
	\
	data->step = 2; \
	ret = jabber_scram_feed_parser(data, success, &out); \
	g_assert_true(ret); \
	g_assert_null(out); \
	\
	jabber_scram_data_destroy(data); \
}

static void
test_jabber_scram_exchange(void) {
	assert_successful_exchange("password", "H7yDYKAWBCrM2Fa5SxGa4iez",
			"n=paul,r=H7yDYKAWBCrM2Fa5SxGa4iez",
			"r=H7yDYKAWBCrM2Fa5SxGa4iezFPVDPpDUcGxPkH3RzP,s=3rXeErP/os7jUNqU,i=4096",
			"c=biws,r=H7yDYKAWBCrM2Fa5SxGa4iezFPVDPpDUcGxPkH3RzP,p=pXkak78EuwwOEwk2/h/OzD7NkEI=",
			"v=ldX4EBNnOgDnNTOCmbSfBHAUCOs=");

	assert_successful_exchange("pass½word", "GNb2HsNI7VnTv8ABsE5AnY8W",
			"n=paul,r=GNb2HsNI7VnTv8ABsE5AnY8W",
			"r=GNb2HsNI7VnTv8ABsE5AnY8W/w/I3eRKM0I7jxFWOH,s=ysAriUjPzFqOXnMQ,i=4096",
			"c=biws,r=GNb2HsNI7VnTv8ABsE5AnY8W/w/I3eRKM0I7jxFWOH,p=n/CtgdWjOYnLQ4m9Na+wPn9D2uY=",
			"v=4TkZwKWy6JHNmrUbU2+IdAaXtos=");
}

gint
main(gint argc, gchar **argv) {
	g_test_init(&argc, &argv, NULL);

	g_test_add_func("/jabber/scram/pbkdf2",
	                test_jabber_scram_pbkdf2);
	g_test_add_func("/jabber/scram/proofs",
	                test_jabber_scram_proofs);
	g_test_add_func("/jabber/scram/exchange",
	                test_jabber_scram_exchange);

	return g_test_run();
}