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/* Copyright (c) 2020 Dovecot authors, see the included COPYING file */
#include "test-auth.h"
#include "auth.h"
#include "str.h"
#include "auth-common.h"
#include "auth-request.h"
#include "auth-request-handler-private.h"
#include "auth-settings.h"
#include "mech-digest-md5-private.h"
#include "otp.h"
#include "mech-otp-common.h"
#include "settings-parser.h"
#include "password-scheme.h"
#include "auth-token.h"
#include <unistd.h>
#include <time.h>
#define UCHAR_LEN(str) (const unsigned char *)(str), sizeof(str)-1
extern const struct mech_module mech_anonymous;
extern const struct mech_module mech_apop;
extern const struct mech_module mech_cram_md5;
extern const struct mech_module mech_digest_md5;
extern const struct mech_module mech_dovecot_token;
extern const struct mech_module mech_external;
extern const struct mech_module mech_login;
extern const struct mech_module mech_oauthbearer;
extern const struct mech_module mech_otp;
extern const struct mech_module mech_plain;
extern const struct mech_module mech_scram_sha1;
extern const struct mech_module mech_scram_sha256;
extern const struct mech_module mech_xoauth2;
static struct auth_settings set;
static struct mechanisms_register *mech_reg;
struct test_case {
const struct mech_module *mech;
const unsigned char *in;
size_t len;
const char *username;
const char *expect_error;
bool success;
bool set_username_before_test;
bool set_cert_username;
};
static void
verify_plain_continue_mock_callback(struct auth_request *request,
verify_plain_callback_t *callback)
{
request->passdb_success = TRUE;
callback(PASSDB_RESULT_OK, request);
}
static void
request_handler_reply_mock_callback(struct auth_request *request,
enum auth_client_result result,
const void *auth_reply ATTR_UNUSED,
size_t reply_size ATTR_UNUSED)
{
request->failed = result != AUTH_CLIENT_RESULT_SUCCESS;
if (request->passdb_result == PASSDB_RESULT_OK)
request->failed = FALSE;
else if (request->mech == &mech_otp) {
if (null_strcmp(request->fields.user, "otp_phase_2") == 0)
request->failed = FALSE;
} else if (request->mech == &mech_oauthbearer) {
}
};
static void
request_handler_reply_continue_mock_callback(struct auth_request *request,
const void *reply,
size_t reply_size)
{
request->context = p_strndup(request->pool, reply, reply_size);
}
static void
auth_client_request_mock_callback(const char *reply ATTR_UNUSED,
struct auth_client_connection *conn ATTR_UNUSED)
{
}
static void test_mechs_init(void)
{
const char *const services[] = {NULL};
process_start_time = time(NULL);
/* Copy default settings */
set = *(const struct auth_settings *)auth_setting_parser_info.defaults;
global_auth_settings = &set;
global_auth_settings->base_dir = ".";
memset((&set)->username_chars_map, 1, sizeof((&set)->username_chars_map));
set.username_format = "";
t_array_init(&set.passdbs, 2);
struct auth_passdb_settings *mock_set = t_new(struct auth_passdb_settings, 1);
*mock_set = mock_passdb_set;
array_push_back(&set.passdbs, &mock_set);
mock_set = t_new(struct auth_passdb_settings, 1);
*mock_set = mock_passdb_set;
mock_set->master = TRUE;
array_push_back(&set.passdbs, &mock_set);
t_array_init(&set.userdbs, 1);
/* Disable stats */
set.stats = FALSE;
/* For tests of digest-md5. */
set.realms_arr = t_strsplit_spaces("example.com ", " ");
/* For tests of mech-anonymous. */
set.anonymous_username = "anonuser";
mech_init(global_auth_settings);
mech_reg = mech_register_init(global_auth_settings);
passdbs_init();
userdbs_init();
passdb_mock_mod_init();
password_schemes_init();
auths_preinit(&set, pool_datastack_create(), mech_reg, services);
auths_init();
auth_token_init();
}
static void test_mech_prepare_request(struct auth_request **request_r,
const struct mech_module *mech,
struct auth_request_handler *handler,
unsigned int running_test,
const struct test_case *test_case)
{
global_auth_settings->ssl_username_from_cert = test_case->set_cert_username;
struct auth *auth = auth_default_service();
struct auth_request *request = auth_request_new(mech, NULL);
request->handler = handler;
request->id = running_test+1;
request->mech_password = NULL;
request->state = AUTH_REQUEST_STATE_NEW;
request->set = global_auth_settings;
request->connect_uid = running_test;
request->passdb = auth->passdbs;
request->userdb = auth->userdbs;
handler->refcount = 1;
auth_fields_add(request->fields.extra_fields, "nodelay", "", 0);
auth_request_ref(request);
auth_request_state_count[AUTH_REQUEST_STATE_NEW] = 1;
if (test_case->set_username_before_test || test_case->set_cert_username)
request->fields.user = p_strdup(request->pool, test_case->username);
if (test_case->set_cert_username)
request->fields.cert_username = TRUE;
*request_r = request;
}
static void test_mech_handle_challenge(struct auth_request *request,
const unsigned char *in,
size_t in_len,
unsigned int running_test,
bool expected_success)
{
string_t *out = t_str_new(16);
str_append_data(out, in, in_len);
const char *challenge = request->context;
if (request->mech == &mech_login) {
/* We do not care about any specific password just give
* the username input as password also in case it's wanted. */
if (expected_success)
test_assert_strcmp_idx(challenge, "Password:", running_test);
else
test_assert_strcmp_idx(challenge, "Username:", running_test);
} else if (request->mech == &mech_cram_md5 && *in != '\0') {
str_truncate(out, 0);
str_append(out, "testuser b913a602c7eda7a495b4e6e7334d3890");
} else if (request->mech == &mech_digest_md5) {
struct digest_auth_request *digest_request =
(struct digest_auth_request *) request;
digest_request->nonce = "OA6MG9tEQGm2hh";
}
auth_request_continue(request, out->data, out->used);
}
static inline const unsigned char *
test_mech_construct_apop_challenge(unsigned int connect_uid, size_t *len_r)
{
string_t *apop_challenge = t_str_new(128);
str_printfa(apop_challenge,"<%lx.%lx.%"PRIxTIME_T".", (unsigned long)getpid(),
(unsigned long)connect_uid, process_start_time+10);
str_append_data(apop_challenge, "\0testuser\0responseoflen16-", 26);
*len_r = apop_challenge->used;
return apop_challenge->data;
}
static void test_mechs(void)
{
static struct auth_request_handler handler = {
.callback = auth_client_request_mock_callback,
.reply_callback = request_handler_reply_mock_callback,
.reply_continue_callback = request_handler_reply_continue_mock_callback,
.verify_plain_continue_callback = verify_plain_continue_mock_callback,
};
static struct test_case tests[] = {
/* Expected to be successful */
{&mech_anonymous, UCHAR_LEN("\0any \0 bad \0 content"), "anonuser", NULL, TRUE, FALSE, FALSE},
{&mech_apop, NULL, 0, "testuser", NULL, TRUE, FALSE, FALSE},
{&mech_cram_md5, UCHAR_LEN("testuser b913a602c7eda7a495b4e6e7334d3890"), "testuser", NULL, TRUE, FALSE, FALSE},
{&mech_digest_md5, UCHAR_LEN("username=\"testuser@example.com\",realm=\"example.com\",nonce=\"OA6MG9tEQGm2hh\",cnonce=\"OA6MHXh6VqTrRk\",nc=00000001,digest-uriresponse=d388dad90d4bbd760a152321f2143af7,qop=\"auth\""), "testuser@example.com", NULL,TRUE, FALSE, FALSE},
{&mech_digest_md5, UCHAR_LEN("username=\"testuser@example.com\",realm=\"example.com\",nonce=\"OA6MG9tEQGm2hh\",cnonce=\"OA6MHXh6VqTrRk\",nc=00000001,digest-uriresponse=d388dad90d4bbd760a152321f2143af7,qop=\"auth\",authzid=\"masteruser\""), "testuser@example.com", NULL, TRUE, FALSE, FALSE},
{&mech_digest_md5, UCHAR_LEN("username=\"test\xc3\xbaser@example.com\",realm=\"example.com\",nonce=\"OA6MG9tEQGm2hh\",cnonce=\"OA6MHXh6VqTrRk\",nc=00000001,digest-uriresponse=d388dad90d4bbd760a152321f2143af7,qop=\"auth\",authzid=\"masteruser\""), "test\xc3\xbaser@example.com", NULL, TRUE, FALSE, FALSE},
{&mech_digest_md5, UCHAR_LEN("username=\"test\xc3\xbaser@example.com\",realm=\"example.com\",nonce=\"OA6MG9tEQGm2hh\",cnonce=\"OA6MHXh6VqTrRk\",charset=\"utf-8\",cipher=unsupported,nc=00000001,digest-uri=imap/server.com,response=d388dad90d4bbd760a152321f2143af7,qop=\"auth\",authzid=\"masteruser\""), "test\xc3\xbaser@example.com", NULL, TRUE, FALSE, FALSE},
{&mech_digest_md5, UCHAR_LEN("username=\"testuser\",realm=\"example.com\",nonce=\"OA6MG9tEQGm2hh\",cnonce=\"OA6MHXh6VqTrRk\",charset=\"utf-8\",cipher=unsupported,nc=00000001,digest-uri=imap/server.com,response=d388dad90d4bbd760a152321f2143af7,qop=\"auth\",authzid=\"masteruser\""), "testuser@example.com", NULL, TRUE, FALSE, FALSE},
{&mech_external, UCHAR_LEN(""), "testuser", NULL, TRUE, TRUE, TRUE},
{&mech_dovecot_token, NULL, 0, "testuser", NULL, TRUE, FALSE, FALSE},
{&mech_login, UCHAR_LEN("testuser"), "testuser", NULL, TRUE, FALSE, FALSE},
{&mech_plain, UCHAR_LEN("\0testuser\0testpass"), "testuser", NULL, TRUE, FALSE, FALSE},
{&mech_plain, UCHAR_LEN("normaluser\0masteruser\0masterpass"), "masteruser", NULL, TRUE, FALSE, FALSE},
{&mech_plain, UCHAR_LEN("normaluser\0normaluser\0masterpass"), "normaluser", NULL, TRUE, FALSE, FALSE},
{&mech_otp, UCHAR_LEN("hex:5Bf0 75d9 959d 036f"), "otp_phase_2", NULL, TRUE, TRUE, FALSE},
{&mech_otp, UCHAR_LEN("word:BOND FOGY DRAB NE RISE MART"), "otp_phase_2", NULL, TRUE, TRUE, FALSE},
{&mech_otp, UCHAR_LEN("init-hex:f6bd 6b33 89b8 7203:md5 499 ke6118:23d1 b253 5ae0 2b7e"), "otp_phase_2", NULL, TRUE, TRUE, FALSE},
{&mech_otp, UCHAR_LEN("init-word:END KERN BALM NICK EROS WAVY:md5 499 ke1235:BABY FAIN OILY NIL TIDY DADE"), "otp_phase_2", NULL , TRUE, TRUE, FALSE},
{&mech_oauthbearer, UCHAR_LEN("n,a=testuser,p=cHJvb2Y=,f=nonstandart\x01host=server\x01port=143\x01""auth=Bearer vF9dft4qmTc2Nvb3RlckBhbHRhdmlzdGEuY29tCg==\x01\x01"), "testuser", NULL, FALSE, TRUE, FALSE},
{&mech_scram_sha1, UCHAR_LEN("n,,n=testuser,r=rOprNGfwEbeRWgbNEkqO"), "testuser", NULL, TRUE, FALSE, FALSE},
{&mech_scram_sha256, UCHAR_LEN("n,,n=testuser,r=rOprNGfwEbeRWgbNEkqO"), "testuser", NULL, TRUE, FALSE, FALSE},
{&mech_xoauth2, UCHAR_LEN("user=testuser\x01""auth=Bearer vF9dft4qmTc2Nvb3RlckBhdHRhdmlzdGEuY29tCg==\x01\x01"), "testuser", NULL, TRUE, FALSE, FALSE},
/* Below tests are expected to fail */
/* Empty input tests*/
{&mech_apop, UCHAR_LEN(""), NULL, NULL, FALSE, FALSE, FALSE},
{&mech_cram_md5, UCHAR_LEN(""), NULL, NULL, FALSE, FALSE, FALSE},
{&mech_digest_md5, UCHAR_LEN(""), NULL, NULL, FALSE, FALSE, FALSE},
{&mech_dovecot_token, UCHAR_LEN(""), NULL, NULL, FALSE, FALSE, FALSE},
{&mech_external, UCHAR_LEN(""), "testuser", NULL, FALSE, TRUE, FALSE},
{&mech_external, UCHAR_LEN(""), NULL, NULL, FALSE, FALSE, FALSE},
{&mech_login, UCHAR_LEN(""), NULL, NULL, FALSE, FALSE, FALSE},
{&mech_otp, UCHAR_LEN(""), NULL, "invalid input", FALSE, FALSE, FALSE},
{&mech_otp, UCHAR_LEN(""), "testuser", "invalid input", FALSE, FALSE, FALSE},
{&mech_plain, UCHAR_LEN(""), NULL, NULL, FALSE, FALSE, FALSE},
{&mech_oauthbearer, UCHAR_LEN(""), NULL, NULL, FALSE, FALSE, FALSE},
{&mech_xoauth2, UCHAR_LEN(""), NULL, NULL, FALSE, FALSE, FALSE},
{&mech_scram_sha1, UCHAR_LEN(""), NULL, NULL, FALSE, FALSE, FALSE},
{&mech_scram_sha256, UCHAR_LEN(""), NULL, NULL, FALSE, FALSE, FALSE},
/* Bad input tests*/
{&mech_apop, UCHAR_LEN("1.1.1\0test\0user\0response"), NULL, NULL, FALSE, FALSE, FALSE},
{&mech_apop, UCHAR_LEN("1.1.1\0testuser\0tooshort"), NULL, NULL, FALSE, FALSE, FALSE},
{&mech_apop, UCHAR_LEN("1.1.1\0testuser\0responseoflen16-"), NULL, NULL, FALSE, FALSE, FALSE},
{&mech_apop, UCHAR_LEN("1.1.1"), NULL, NULL, FALSE, FALSE, FALSE},
{&mech_otp, UCHAR_LEN("somebody\0testuser"), "testuser", "otp(testuser): unsupported response type", FALSE, TRUE, FALSE},
{&mech_cram_md5, UCHAR_LEN("testuser\0response"), "testuser", NULL, FALSE, FALSE, FALSE},
{&mech_plain, UCHAR_LEN("testuser\0"), "testuser", NULL, FALSE, FALSE, FALSE},
/* Covering most of the digest md5 parsing */
{&mech_digest_md5, UCHAR_LEN("username=\"testuser@example.com\",realm=\"example.com\",cnonce=\"OA6MHXh6VqTrRk\",response=d388dad90d4bbd760a152321f2143af7,qop=\"auth\""), NULL, NULL, FALSE, FALSE, FALSE},
{&mech_digest_md5, UCHAR_LEN("realm=\"example.com\",cnonce=\"OA6MHXh6VqTrRk\",nonce=\"OA6MG9tEQGm2hh\""), NULL, NULL, FALSE, FALSE, FALSE},
{&mech_digest_md5, UCHAR_LEN("username=\"testuser@example.com\",realm=\"example.com\", nonce=\"OA6MG9tEQGm2hh\""), NULL, NULL, FALSE, FALSE, FALSE},
{&mech_digest_md5, UCHAR_LEN("qop=\"auth-int\""), NULL, NULL, FALSE, FALSE, FALSE},
{&mech_digest_md5, UCHAR_LEN("qop=\"auth-int\""), NULL, NULL, FALSE, FALSE, FALSE},
{&mech_digest_md5, UCHAR_LEN("qop=\"auth-conf\",\"cipher=rc4\""), NULL, NULL, FALSE, FALSE, FALSE},
{&mech_digest_md5, UCHAR_LEN("cnonce=\"OA6MHXh6VqTrRk\",cnonce=\"OA6MHXh6VqTrRk\""), NULL, NULL, FALSE, FALSE, FALSE},
{&mech_digest_md5, UCHAR_LEN("cnonce=\"\""), NULL, NULL, FALSE, FALSE, FALSE},
{&mech_digest_md5, UCHAR_LEN("nonce=\"not matching\""), NULL, NULL, FALSE, FALSE, FALSE},
{&mech_digest_md5, UCHAR_LEN("nc=00000001,nc=00000002"), NULL, NULL, FALSE, FALSE, FALSE},
{&mech_digest_md5, UCHAR_LEN("nc=NAN"), NULL, NULL, FALSE, FALSE, FALSE},
{&mech_digest_md5, UCHAR_LEN("nc=00000002"), NULL, NULL, FALSE, FALSE, FALSE},
{&mech_digest_md5, UCHAR_LEN("cipher=unsupported"), NULL, NULL, FALSE, FALSE, FALSE},
{&mech_digest_md5, UCHAR_LEN("digest-uri="), NULL, NULL, FALSE, FALSE, FALSE},
{&mech_digest_md5, UCHAR_LEN("username=\"\""), NULL, NULL, FALSE, FALSE, FALSE},
{&mech_digest_md5, UCHAR_LEN("username=\"a\",username=\"b\""), NULL, NULL, FALSE, FALSE, FALSE},
{&mech_digest_md5, UCHAR_LEN("response=broken"), NULL, NULL, FALSE, FALSE, FALSE},
{&mech_digest_md5, UCHAR_LEN("maxbuf=32,maxbuf=1024"), NULL, NULL, FALSE, FALSE, FALSE},
{&mech_digest_md5, UCHAR_LEN("maxbuf=broken"), NULL, NULL, FALSE, FALSE, FALSE},
{&mech_digest_md5, UCHAR_LEN("authzid=\"somebody\",authzid=\"else\""), NULL, NULL, FALSE, FALSE, FALSE},
{&mech_digest_md5, UCHAR_LEN("authzid=\"\""), NULL, NULL, FALSE, FALSE, FALSE},
{&mech_digest_md5, UCHAR_LEN("charset=unsupported"), NULL, NULL, FALSE, FALSE, FALSE},
{&mech_digest_md5, UCHAR_LEN("qop=unsupported"), NULL, NULL, FALSE, FALSE, FALSE},
/* Too much nuls */
{&mech_dovecot_token, UCHAR_LEN("service\0pid\0fail\0se\0ssion_id\0deadbeef"), NULL , NULL, FALSE, FALSE, FALSE},
{&mech_login, UCHAR_LEN("test user\0user"), NULL, NULL, FALSE, FALSE, FALSE},
{&mech_oauthbearer, UCHAR_LEN("n,a==testuser,\x01""auth=Bearer token\x01\x01"), NULL, NULL, FALSE, FALSE, FALSE},
{&mech_oauthbearer, UCHAR_LEN("n,a=testuser,f=non-standard\x01""auth=Bearer token\x01\x01"), "testuser", NULL, FALSE, FALSE, FALSE},
{&mech_oauthbearer, UCHAR_LEN("n,a=testuser\x01""auth=token\x01\x01"), "testuser", NULL, FALSE, FALSE, FALSE},
{&mech_xoauth2, UCHAR_LEN("testuser\x01auth=Bearer token\x01\x01"), NULL, NULL, FALSE, FALSE, FALSE},
/* does not start with [B|b]earer */
{&mech_xoauth2, UCHAR_LEN("user=testuser\x01""auth=token\x01\x01"), "testuser", NULL, FALSE, FALSE, FALSE},
/* Too much nuls */
{&mech_plain, UCHAR_LEN("\0fa\0il\0ing\0withthis"), NULL, NULL, FALSE, FALSE, FALSE},
{&mech_plain, UCHAR_LEN("failingwiththis"), NULL, NULL, FALSE, FALSE, FALSE},
{&mech_plain, UCHAR_LEN("failing\0withthis"), NULL, NULL, FALSE, FALSE, FALSE},
{&mech_otp, UCHAR_LEN("someb\0ody\0testuser"), NULL, "invalid input", FALSE, FALSE, FALSE},
/* phase 2 */
{&mech_otp, UCHAR_LEN("someb\0ody\0testuser"), "testuser", "otp(testuser): unsupported response type", FALSE, TRUE, FALSE},
{&mech_scram_sha1, UCHAR_LEN("c=biws,r=fyko+d2lbbFgONRv9qkxdawL3rfcNHYJY1ZVvWVs7j,p=v0X8v3Bz2T0CJGbJQyF0X+HI4Ts="), NULL, NULL, FALSE, FALSE, FALSE},
{&mech_scram_sha1, UCHAR_LEN("iws0X8v3Bz2T0CJGbJQyF0X+HI4Ts=,,,,"), NULL, NULL, FALSE, FALSE, FALSE},
{&mech_scram_sha1, UCHAR_LEN("n,a=masteruser,,"), NULL, NULL, FALSE, FALSE, FALSE},
{&mech_scram_sha1, UCHAR_LEN("n,a==masteruser,,"), NULL, NULL, FALSE, FALSE, FALSE},
{&mech_scram_sha1, UCHAR_LEN("n,,m=testuser,,"), NULL, NULL, FALSE, FALSE, FALSE},
{&mech_scram_sha1, UCHAR_LEN("broken\0input"), NULL, NULL, FALSE, FALSE, FALSE},
{&mech_scram_sha256, UCHAR_LEN("broken\0input"), NULL, NULL, FALSE, FALSE, FALSE},
};
test_mechs_init();
string_t *d_token = t_str_new(32);
str_append_data(d_token, UCHAR_LEN("service\0pid\0testuser\0session\0"));
str_append(d_token, auth_token_get("service","pid","testuser","session"));
for (unsigned int running_test = 0; running_test < N_ELEMENTS(tests);
running_test++) T_BEGIN {
struct test_case *test_case = &tests[running_test];
const struct mech_module *mech = test_case->mech;
struct auth_request *request;
const char *testname = t_strdup_printf("auth mech %s %d/%zu",
mech->mech_name,
running_test+1,
N_ELEMENTS(tests));
test_begin(testname);
test_mech_prepare_request(&request, mech, &handler, running_test,
test_case);
if (mech == &mech_apop && test_case->in == NULL)
test_case->in =
test_mech_construct_apop_challenge(request->connect_uid,
&test_case->len);
if (mech == &mech_dovecot_token && test_case->in == NULL) {
test_case->in = d_token->data;
test_case->len = d_token->used;
}
if (test_case->expect_error != NULL)
test_expect_error_string(test_case->expect_error);
request->state = AUTH_REQUEST_STATE_NEW;
unsigned char *input_dup = test_case->len == 0 ? NULL :
i_memdup(test_case->in, test_case->len);
request->initial_response = input_dup;
request->initial_response_len = test_case->len;
auth_request_initial(request);
const char *challenge = request->context;
if (challenge != NULL) {
test_mech_handle_challenge(request, test_case->in,
test_case->len,
running_test,
test_case->success);
}
const char *username = request->fields.user;
if (request->fields.master_user != NULL)
username = request->fields.master_user;
if (!test_case->set_username_before_test && test_case->success) {
/* If the username was set by the test logic, do not
* compare it as it does not give any additional
* information */
test_assert_strcmp_idx(test_case->username, username,
running_test);
} else if (!test_case->set_username_before_test && !test_case->success) {
/* If the username is not set by the testlogic and we
* expect failure, verify that the mechanism failed by
* checking that the username is not set */
test_assert_idx(username == NULL, running_test);
}
if (test_case->success)
test_assert_idx(request->failed == FALSE, running_test);
else
test_assert_idx(request->failed == TRUE, running_test);
event_unref(&request->event);
event_unref(&request->mech_event);
i_free(input_dup);
mech->auth_free(request);
test_end();
} T_END;
mech_otp_deinit();
auths_deinit();
auth_token_deinit();
password_schemes_deinit();
passdb_mock_mod_deinit();
passdbs_deinit();
userdbs_deinit();
event_unref(&auth_event);
mech_deinit(global_auth_settings);
mech_register_deinit(&mech_reg);
auths_free();
i_unlink("auth-token-secret.dat");
}
int main(void)
{
static void (*const test_functions[])(void) = {
test_mechs,
NULL
};
return test_run(test_functions);
}
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