thodg/libgit2/tests/libgit2/online/clone.c

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• Hash : 3344fddc
  Author :
  Date : 2021-11-16T23:29:22
  

  refactor: `tests` is now `tests/libgit2`
  
  Like we want to separate libgit2 and utility source code, we want to
  separate libgit2 and utility tests.  Start by moving all the tests into
  libgit2.
  

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• tests/libgit2/online/clone.c

• #include "clar_libgit2.h"
  
  #include "git2/clone.h"
  #include "git2/cred_helpers.h"
  #include "remote.h"
  #include "futils.h"
  #include "refs.h"
  
  #define LIVE_REPO_URL "http://github.com/libgit2/TestGitRepository"
  #define LIVE_EMPTYREPO_URL "http://github.com/libgit2/TestEmptyRepository"
  #define BB_REPO_URL "https://libgit3@bitbucket.org/libgit2/testgitrepository.git"
  #define BB_REPO_URL_WITH_PASS "https://libgit3:libgit3@bitbucket.org/libgit2/testgitrepository.git"
  #define BB_REPO_URL_WITH_WRONG_PASS "https://libgit3:wrong@bitbucket.org/libgit2/testgitrepository.git"
  #define GOOGLESOURCE_REPO_URL "https://chromium.googlesource.com/external/github.com/sergi/go-diff"
  
  #define SSH_REPO_URL "ssh://github.com/libgit2/TestGitRepository"
  
  static git_repository *g_repo;
  static git_clone_options g_options;
  
  static char *_remote_url = NULL;
  static char *_remote_user = NULL;
  static char *_remote_pass = NULL;
  static char *_remote_sslnoverify = NULL;
  static char *_remote_ssh_pubkey = NULL;
  static char *_remote_ssh_privkey = NULL;
  static char *_remote_ssh_passphrase = NULL;
  static char *_remote_ssh_fingerprint = NULL;
  static char *_remote_proxy_scheme = NULL;
  static char *_remote_proxy_host = NULL;
  static char *_remote_proxy_user = NULL;
  static char *_remote_proxy_pass = NULL;
  static char *_remote_proxy_selfsigned = NULL;
  static char *_remote_expectcontinue = NULL;
  static char *_remote_redirect_initial = NULL;
  static char *_remote_redirect_subsequent = NULL;
  
  static int _orig_proxies_need_reset = 0;
  static char *_orig_http_proxy = NULL;
  static char *_orig_https_proxy = NULL;
  static char *_orig_no_proxy = NULL;
  
  static int ssl_cert(git_cert *cert, int valid, const char *host, void *payload)
  {
  	GIT_UNUSED(cert);
  	GIT_UNUSED(host);
  	GIT_UNUSED(payload);
  
  	if (_remote_sslnoverify != NULL)
  		valid = 1;
  
  	return valid ? 0 : GIT_ECERTIFICATE;
  }
  
  void test_online_clone__initialize(void)
  {
  	git_checkout_options dummy_opts = GIT_CHECKOUT_OPTIONS_INIT;
  	git_fetch_options dummy_fetch = GIT_FETCH_OPTIONS_INIT;
  
  	g_repo = NULL;
  
  	memset(&g_options, 0, sizeof(git_clone_options));
  	g_options.version = GIT_CLONE_OPTIONS_VERSION;
  	g_options.checkout_opts = dummy_opts;
  	g_options.checkout_opts.checkout_strategy = GIT_CHECKOUT_SAFE;
  	g_options.fetch_opts = dummy_fetch;
  	g_options.fetch_opts.callbacks.certificate_check = ssl_cert;
  
  	_remote_url = cl_getenv("GITTEST_REMOTE_URL");
  	_remote_user = cl_getenv("GITTEST_REMOTE_USER");
  	_remote_pass = cl_getenv("GITTEST_REMOTE_PASS");
  	_remote_sslnoverify = cl_getenv("GITTEST_REMOTE_SSL_NOVERIFY");
  	_remote_ssh_pubkey = cl_getenv("GITTEST_REMOTE_SSH_PUBKEY");
  	_remote_ssh_privkey = cl_getenv("GITTEST_REMOTE_SSH_KEY");
  	_remote_ssh_passphrase = cl_getenv("GITTEST_REMOTE_SSH_PASSPHRASE");
  	_remote_ssh_fingerprint = cl_getenv("GITTEST_REMOTE_SSH_FINGERPRINT");
  	_remote_proxy_scheme = cl_getenv("GITTEST_REMOTE_PROXY_SCHEME");
  	_remote_proxy_host = cl_getenv("GITTEST_REMOTE_PROXY_HOST");
  	_remote_proxy_user = cl_getenv("GITTEST_REMOTE_PROXY_USER");
  	_remote_proxy_pass = cl_getenv("GITTEST_REMOTE_PROXY_PASS");
  	_remote_proxy_selfsigned = cl_getenv("GITTEST_REMOTE_PROXY_SELFSIGNED");
  	_remote_expectcontinue = cl_getenv("GITTEST_REMOTE_EXPECTCONTINUE");
  	_remote_redirect_initial = cl_getenv("GITTEST_REMOTE_REDIRECT_INITIAL");
  	_remote_redirect_subsequent = cl_getenv("GITTEST_REMOTE_REDIRECT_SUBSEQUENT");
  
  	if (_remote_expectcontinue)
  		git_libgit2_opts(GIT_OPT_ENABLE_HTTP_EXPECT_CONTINUE, 1);
  
  	_orig_proxies_need_reset = 0;
  }
  
  void test_online_clone__cleanup(void)
  {
  	if (g_repo) {
  		git_repository_free(g_repo);
  		g_repo = NULL;
  	}
  	cl_fixture_cleanup("./foo");
  	cl_fixture_cleanup("./initial");
  	cl_fixture_cleanup("./subsequent");
  
  	git__free(_remote_url);
  	git__free(_remote_user);
  	git__free(_remote_pass);
  	git__free(_remote_sslnoverify);
  	git__free(_remote_ssh_pubkey);
  	git__free(_remote_ssh_privkey);
  	git__free(_remote_ssh_passphrase);
  	git__free(_remote_ssh_fingerprint);
  	git__free(_remote_proxy_scheme);
  	git__free(_remote_proxy_host);
  	git__free(_remote_proxy_user);
  	git__free(_remote_proxy_pass);
  	git__free(_remote_proxy_selfsigned);
  	git__free(_remote_expectcontinue);
  	git__free(_remote_redirect_initial);
  	git__free(_remote_redirect_subsequent);
  
  	if (_orig_proxies_need_reset) {
  		cl_setenv("HTTP_PROXY", _orig_http_proxy);
  		cl_setenv("HTTPS_PROXY", _orig_https_proxy);
  		cl_setenv("NO_PROXY", _orig_no_proxy);
  
  		git__free(_orig_http_proxy);
  		git__free(_orig_https_proxy);
  		git__free(_orig_no_proxy);
  	}
  
  	git_libgit2_opts(GIT_OPT_SET_SSL_CERT_LOCATIONS, NULL, NULL);
  }
  
  void test_online_clone__network_full(void)
  {
  	git_remote *origin;
  
  	cl_git_pass(git_clone(&g_repo, LIVE_REPO_URL, "./foo", &g_options));
  	cl_assert(!git_repository_is_bare(g_repo));
  	cl_git_pass(git_remote_lookup(&origin, g_repo, "origin"));
  
  	cl_assert_equal_i(GIT_REMOTE_DOWNLOAD_TAGS_AUTO, origin->download_tags);
  
  	git_remote_free(origin);
  }
  
  void test_online_clone__network_bare(void)
  {
  	git_remote *origin;
  
  	g_options.bare = true;
  
  	cl_git_pass(git_clone(&g_repo, LIVE_REPO_URL, "./foo", &g_options));
  	cl_assert(git_repository_is_bare(g_repo));
  	cl_git_pass(git_remote_lookup(&origin, g_repo, "origin"));
  
  	git_remote_free(origin);
  }
  
  void test_online_clone__empty_repository(void)
  {
  	git_reference *head;
  
  	cl_git_pass(git_clone(&g_repo, LIVE_EMPTYREPO_URL, "./foo", &g_options));
  
  	cl_assert_equal_i(true, git_repository_is_empty(g_repo));
  	cl_assert_equal_i(true, git_repository_head_unborn(g_repo));
  
  	cl_git_pass(git_reference_lookup(&head, g_repo, GIT_HEAD_FILE));
  	cl_assert_equal_i(GIT_REFERENCE_SYMBOLIC, git_reference_type(head));
  	cl_assert_equal_s("refs/heads/master", git_reference_symbolic_target(head));
  
  	git_reference_free(head);
  }
  
  static void checkout_progress(const char *path, size_t cur, size_t tot, void *payload)
  {
  	bool *was_called = (bool*)payload;
  	GIT_UNUSED(path); GIT_UNUSED(cur); GIT_UNUSED(tot);
  	(*was_called) = true;
  }
  
  static int fetch_progress(const git_indexer_progress *stats, void *payload)
  {
  	bool *was_called = (bool*)payload;
  	GIT_UNUSED(stats);
  	(*was_called) = true;
  	return 0;
  }
  
  void test_online_clone__can_checkout_a_cloned_repo(void)
  {
  	git_str path = GIT_STR_INIT;
  	git_reference *head, *remote_head;
  	bool checkout_progress_cb_was_called = false,
  		  fetch_progress_cb_was_called = false;
  
  	g_options.checkout_opts.checkout_strategy = GIT_CHECKOUT_SAFE;
  	g_options.checkout_opts.progress_cb = &checkout_progress;
  	g_options.checkout_opts.progress_payload = &checkout_progress_cb_was_called;
  	g_options.fetch_opts.callbacks.transfer_progress = &fetch_progress;
  	g_options.fetch_opts.callbacks.payload = &fetch_progress_cb_was_called;
  
  	cl_git_pass(git_clone(&g_repo, LIVE_REPO_URL, "./foo", &g_options));
  
  	cl_git_pass(git_str_joinpath(&path, git_repository_workdir(g_repo), "master.txt"));
  	cl_assert_equal_i(true, git_fs_path_isfile(git_str_cstr(&path)));
  
  	cl_git_pass(git_reference_lookup(&head, g_repo, "HEAD"));
  	cl_assert_equal_i(GIT_REFERENCE_SYMBOLIC, git_reference_type(head));
  	cl_assert_equal_s("refs/heads/master", git_reference_symbolic_target(head));
  
  	cl_git_pass(git_reference_lookup(&remote_head, g_repo, "refs/remotes/origin/HEAD"));
  	cl_assert_equal_i(GIT_REFERENCE_SYMBOLIC, git_reference_type(remote_head));
  	cl_assert_equal_s("refs/remotes/origin/master", git_reference_symbolic_target(remote_head));
  
  	cl_assert_equal_i(true, checkout_progress_cb_was_called);
  	cl_assert_equal_i(true, fetch_progress_cb_was_called);
  
  	git_reference_free(remote_head);
  	git_reference_free(head);
  	git_str_dispose(&path);
  }
  
  static int remote_mirror_cb(git_remote **out, git_repository *repo,
  			    const char *name, const char *url, void *payload)
  {
  	int error;
  	git_remote *remote;
  
  	GIT_UNUSED(payload);
  
  	if ((error = git_remote_create_with_fetchspec(&remote, repo, name, url, "+refs/*:refs/*")) < 0)
  		return error;
  
  	*out = remote;
  	return 0;
  }
  
  void test_online_clone__clone_mirror(void)
  {
  	git_clone_options opts = GIT_CLONE_OPTIONS_INIT;
  	git_reference *head;
  
  	bool fetch_progress_cb_was_called = false;
  
  	opts.fetch_opts.callbacks.transfer_progress = &fetch_progress;
  	opts.fetch_opts.callbacks.payload = &fetch_progress_cb_was_called;
  
  	opts.bare = true;
  	opts.remote_cb = remote_mirror_cb;
  
  	cl_git_pass(git_clone(&g_repo, LIVE_REPO_URL, "./foo.git", &opts));
  
  	cl_git_pass(git_reference_lookup(&head, g_repo, "HEAD"));
  	cl_assert_equal_i(GIT_REFERENCE_SYMBOLIC, git_reference_type(head));
  	cl_assert_equal_s("refs/heads/master", git_reference_symbolic_target(head));
  
  	cl_assert_equal_i(true, fetch_progress_cb_was_called);
  
  	git_reference_free(head);
  	git_repository_free(g_repo);
  	g_repo = NULL;
  
  	cl_fixture_cleanup("./foo.git");
  }
  
  static int update_tips(const char *refname, const git_oid *a, const git_oid *b, void *payload)
  {
  	int *callcount = (int*)payload;
  	GIT_UNUSED(refname); GIT_UNUSED(a); GIT_UNUSED(b);
  	*callcount = *callcount + 1;
  	return 0;
  }
  
  void test_online_clone__custom_remote_callbacks(void)
  {
  	int callcount = 0;
  
  	g_options.fetch_opts.callbacks.update_tips = update_tips;
  	g_options.fetch_opts.callbacks.payload = &callcount;
  
  	cl_git_pass(git_clone(&g_repo, LIVE_REPO_URL, "./foo", &g_options));
  	cl_assert(callcount > 0);
  }
  
  void test_online_clone__custom_headers(void)
  {
  	char *empty_header = "";
  	char *unnamed_header = "this is a header about nothing";
  	char *newlines = "X-Custom: almost OK\n";
  	char *conflict = "Accept: defined-by-git";
  	char *ok = "X-Custom: this should be ok";
  
  	g_options.fetch_opts.custom_headers.count = 1;
  
  	g_options.fetch_opts.custom_headers.strings = &empty_header;
  	cl_git_fail(git_clone(&g_repo, LIVE_REPO_URL, "./foo", &g_options));
  
  	g_options.fetch_opts.custom_headers.strings = &unnamed_header;
  	cl_git_fail(git_clone(&g_repo, LIVE_REPO_URL, "./foo", &g_options));
  
  	g_options.fetch_opts.custom_headers.strings = &newlines;
  	cl_git_fail(git_clone(&g_repo, LIVE_REPO_URL, "./foo", &g_options));
  
  	g_options.fetch_opts.custom_headers.strings = &conflict;
  	cl_git_fail(git_clone(&g_repo, LIVE_REPO_URL, "./foo", &g_options));
  
  	/* Finally, we got it right! */
  	g_options.fetch_opts.custom_headers.strings = &ok;
  	cl_git_pass(git_clone(&g_repo, LIVE_REPO_URL, "./foo", &g_options));
  }
  
  static int cred_failure_cb(
  	git_credential **cred,
  	const char *url,
  	const char *username_from_url,
  	unsigned int allowed_types,
  	void *data)
  {
  	GIT_UNUSED(cred); GIT_UNUSED(url); GIT_UNUSED(username_from_url);
  	GIT_UNUSED(allowed_types); GIT_UNUSED(data);
  	return -172;
  }
  
  void test_online_clone__cred_callback_failure_return_code_is_tunnelled(void)
  {
  	git__free(_remote_url);
  	git__free(_remote_user);
  
  	_remote_url = git__strdup("https://github.com/libgit2/non-existent");
  	_remote_user = git__strdup("libgit2test");
  
  	g_options.fetch_opts.callbacks.credentials = cred_failure_cb;
  
  	cl_git_fail_with(-172, git_clone(&g_repo, _remote_url, "./foo", &g_options));
  }
  
  static int cred_count_calls_cb(git_credential **cred, const char *url, const char *user,
  			       unsigned int allowed_types, void *data)
  {
  	size_t *counter = (size_t *) data;
  
  	GIT_UNUSED(url); GIT_UNUSED(user); GIT_UNUSED(allowed_types);
  
  	if (allowed_types == GIT_CREDENTIAL_USERNAME)
  		return git_credential_username_new(cred, "foo");
  
  	(*counter)++;
  
  	if (*counter == 3)
  		return GIT_EUSER;
  
  	return git_credential_userpass_plaintext_new(cred, "foo", "bar");
  }
  
  void test_online_clone__cred_callback_called_again_on_auth_failure(void)
  {
  	size_t counter = 0;
  
  	git__free(_remote_url);
  	git__free(_remote_user);
  
  	_remote_url = git__strdup("https://gitlab.com/libgit2/non-existent");
  	_remote_user = git__strdup("libgit2test");
  
  	g_options.fetch_opts.callbacks.credentials = cred_count_calls_cb;
  	g_options.fetch_opts.callbacks.payload = &counter;
  
  	cl_git_fail_with(GIT_EUSER, git_clone(&g_repo, _remote_url, "./foo", &g_options));
  	cl_assert_equal_i(3, counter);
  }
  
  static int cred_default(
  	git_credential **cred,
  	const char *url,
  	const char *user_from_url,
  	unsigned int allowed_types,
  	void *payload)
  {
  	GIT_UNUSED(url);
  	GIT_UNUSED(user_from_url);
  	GIT_UNUSED(payload);
  
  	if (!(allowed_types & GIT_CREDENTIAL_DEFAULT))
  		return 0;
  
  	return git_credential_default_new(cred);
  }
  
  void test_online_clone__credentials(void)
  {
  	/* Remote URL environment variable must be set.
  	 * User and password are optional.
  	 */
  	git_credential_userpass_payload user_pass = {
  		_remote_user,
  		_remote_pass
  	};
  
  	if (!_remote_url)
  		clar__skip();
  
  	if (cl_is_env_set("GITTEST_REMOTE_DEFAULT")) {
  		g_options.fetch_opts.callbacks.credentials = cred_default;
  	} else {
  		g_options.fetch_opts.callbacks.credentials = git_credential_userpass;
  		g_options.fetch_opts.callbacks.payload = &user_pass;
  	}
  
  	cl_git_pass(git_clone(&g_repo, _remote_url, "./foo", &g_options));
  	git_repository_free(g_repo); g_repo = NULL;
  	cl_fixture_cleanup("./foo");
  }
  
  void test_online_clone__credentials_via_custom_headers(void)
  {
  	const char *creds = "libgit3:libgit3";
  	git_str auth = GIT_STR_INIT;
  
  	cl_git_pass(git_str_puts(&auth, "Authorization: Basic "));
  	cl_git_pass(git_str_encode_base64(&auth, creds, strlen(creds)));
  	g_options.fetch_opts.custom_headers.count = 1;
  	g_options.fetch_opts.custom_headers.strings = &auth.ptr;
  
  	cl_git_pass(git_clone(&g_repo, "https://bitbucket.org/libgit2/testgitrepository.git", "./foo", &g_options));
  
  	git_str_dispose(&auth);
  }
  
  void test_online_clone__bitbucket_style(void)
  {
  	git_credential_userpass_payload user_pass = {
  		"libgit3", "libgit3"
  	};
  
  	g_options.fetch_opts.callbacks.credentials = git_credential_userpass;
  	g_options.fetch_opts.callbacks.payload = &user_pass;
  
  	cl_git_pass(git_clone(&g_repo, BB_REPO_URL, "./foo", &g_options));
  	git_repository_free(g_repo); g_repo = NULL;
  	cl_fixture_cleanup("./foo");
  }
  
  void test_online_clone__bitbucket_uses_creds_in_url(void)
  {
  	git_credential_userpass_payload user_pass = {
  		"libgit2", "wrong"
  	};
  
  	g_options.fetch_opts.callbacks.credentials = git_credential_userpass;
  	g_options.fetch_opts.callbacks.payload = &user_pass;
  
  	/*
  	 * Correct user and pass are in the URL; the (incorrect) creds in
  	 * the `git_credential_userpass_payload` should be ignored.
  	 */
  	cl_git_pass(git_clone(&g_repo, BB_REPO_URL_WITH_PASS, "./foo", &g_options));
  	git_repository_free(g_repo); g_repo = NULL;
  	cl_fixture_cleanup("./foo");
  }
  
  void test_online_clone__bitbucket_falls_back_to_specified_creds(void)
  {
  	git_credential_userpass_payload user_pass = {
  		"libgit2", "libgit2"
  	};
  
  	g_options.fetch_opts.callbacks.credentials = git_credential_userpass;
  	g_options.fetch_opts.callbacks.payload = &user_pass;
  
  	/*
  	 * TODO: as of March 2018, bitbucket sporadically fails with
  	 * 403s instead of replying with a 401 - but only sometimes.
  	 */
  	cl_skip();
  
  	/*
  	 * Incorrect user and pass are in the URL; the (correct) creds in
  	 * the `git_credential_userpass_payload` should be used as a fallback.
  	 */
  	cl_git_pass(git_clone(&g_repo, BB_REPO_URL_WITH_WRONG_PASS, "./foo", &g_options));
  	git_repository_free(g_repo); g_repo = NULL;
  	cl_fixture_cleanup("./foo");
  }
  
  void test_online_clone__googlesource(void)
  {
  	cl_git_pass(git_clone(&g_repo, GOOGLESOURCE_REPO_URL, "./foo", &g_options));
  	git_repository_free(g_repo); g_repo = NULL;
  	cl_fixture_cleanup("./foo");
  }
  
  static int cancel_at_half(const git_indexer_progress *stats, void *payload)
  {
  	GIT_UNUSED(payload);
  
  	if (stats->received_objects > (stats->total_objects/2))
  		return 4321;
  	return 0;
  }
  
  void test_online_clone__can_cancel(void)
  {
  	g_options.fetch_opts.callbacks.transfer_progress = cancel_at_half;
  
  	cl_git_fail_with(4321,
  		git_clone(&g_repo, LIVE_REPO_URL, "./foo", &g_options));
  }
  
  static int cred_cb(git_credential **cred, const char *url, const char *user_from_url,
  		   unsigned int allowed_types, void *payload)
  {
  	GIT_UNUSED(url); GIT_UNUSED(user_from_url); GIT_UNUSED(payload);
  
  	if (allowed_types & GIT_CREDENTIAL_USERNAME)
  		return git_credential_username_new(cred, _remote_user);
  
  	if (allowed_types & GIT_CREDENTIAL_SSH_KEY)
  		return git_credential_ssh_key_new(cred,
  			_remote_user, _remote_ssh_pubkey,
  			_remote_ssh_privkey, _remote_ssh_passphrase);
  
  	git_error_set(GIT_ERROR_NET, "unexpected cred type");
  	return -1;
  }
  
  static int check_ssh_auth_methods(git_credential **cred, const char *url, const char *username_from_url,
  				  unsigned int allowed_types, void *data)
  {
  	int *with_user = (int *) data;
  	GIT_UNUSED(cred); GIT_UNUSED(url); GIT_UNUSED(username_from_url); GIT_UNUSED(data);
  
  	if (!*with_user)
  		cl_assert_equal_i(GIT_CREDENTIAL_USERNAME, allowed_types);
  	else
  		cl_assert(!(allowed_types & GIT_CREDENTIAL_USERNAME));
  
  	return GIT_EUSER;
  }
  
  void test_online_clone__ssh_auth_methods(void)
  {
  	int with_user;
  
  #ifndef GIT_SSH
  	clar__skip();
  #endif
  	g_options.fetch_opts.callbacks.credentials = check_ssh_auth_methods;
  	g_options.fetch_opts.callbacks.payload = &with_user;
  	g_options.fetch_opts.callbacks.certificate_check = NULL;
  
  	with_user = 0;
  	cl_git_fail_with(GIT_EUSER,
  		git_clone(&g_repo, SSH_REPO_URL, "./foo", &g_options));
  
  	with_user = 1;
  	cl_git_fail_with(GIT_EUSER,
  		git_clone(&g_repo, "ssh://git@github.com/libgit2/TestGitRepository", "./foo", &g_options));
  }
  
  static int custom_remote_ssh_with_paths(
  	git_remote **out,
  	git_repository *repo,
  	const char *name,
  	const char *url,
  	void *payload)
  {
  	int error;
  
  	GIT_UNUSED(payload);
  
  	if ((error = git_remote_create(out, repo, name, url)) < 0)
  		return error;
  
  	return 0;
  }
  
  void test_online_clone__ssh_with_paths(void)
  {
  	char *bad_paths[] = {
  		"/bin/yes",
  		"/bin/false",
  	};
  	char *good_paths[] = {
  		"/usr/bin/git-upload-pack",
  		"/usr/bin/git-receive-pack",
  	};
  	git_strarray arr = {
  		bad_paths,
  		2,
  	};
  
  #ifndef GIT_SSH
  	clar__skip();
  #endif
  	if (!_remote_url || !_remote_user || strncmp(_remote_url, "ssh://", 5) != 0)
  		clar__skip();
  
  	g_options.remote_cb = custom_remote_ssh_with_paths;
  	g_options.fetch_opts.callbacks.transport = git_transport_ssh_with_paths;
  	g_options.fetch_opts.callbacks.credentials = cred_cb;
  	g_options.fetch_opts.callbacks.payload = &arr;
  	g_options.fetch_opts.callbacks.certificate_check = NULL;
  
  	cl_git_fail(git_clone(&g_repo, _remote_url, "./foo", &g_options));
  
  	arr.strings = good_paths;
  	cl_git_pass(git_clone(&g_repo, _remote_url, "./foo", &g_options));
  }
  
  static int cred_foo_bar(git_credential **cred, const char *url, const char *username_from_url,
  				  unsigned int allowed_types, void *data)
  
  {
  	GIT_UNUSED(url); GIT_UNUSED(username_from_url); GIT_UNUSED(allowed_types); GIT_UNUSED(data);
  
  	return git_credential_userpass_plaintext_new(cred, "foo", "bar");
  }
  
  void test_online_clone__ssh_cannot_change_username(void)
  {
  #ifndef GIT_SSH
  	clar__skip();
  #endif
  	g_options.fetch_opts.callbacks.credentials = cred_foo_bar;
  
  	cl_git_fail(git_clone(&g_repo, "ssh://git@github.com/libgit2/TestGitRepository", "./foo", &g_options));
  }
  
  static int ssh_certificate_check(git_cert *cert, int valid, const char *host, void *payload)
  {
  	git_cert_hostkey *key;
  	git_oid expected = {{0}}, actual = {{0}};
  
  	GIT_UNUSED(valid);
  	GIT_UNUSED(payload);
  
  	cl_assert(_remote_ssh_fingerprint);
  
  	cl_git_pass(git_oid_fromstrp(&expected, _remote_ssh_fingerprint));
  	cl_assert_equal_i(GIT_CERT_HOSTKEY_LIBSSH2, cert->cert_type);
  	key = (git_cert_hostkey *) cert;
  
  	/*
  	 * We need to figure out how long our input was to check for
  	 * the type. Here we abuse the fact that both hashes fit into
  	 * our git_oid type.
  	 */
  	if (strlen(_remote_ssh_fingerprint) == 32 && key->type & GIT_CERT_SSH_MD5) {
  		memcpy(&actual.id, key->hash_md5, 16);
  	} else 	if (strlen(_remote_ssh_fingerprint) == 40 && key->type & GIT_CERT_SSH_SHA1) {
  		memcpy(&actual, key->hash_sha1, 20);
  	} else {
  		cl_fail("Cannot find a usable SSH hash");
  	}
  
  	cl_assert(!memcmp(&expected, &actual, 20));
  
  	cl_assert_equal_s("localhost", host);
  
  	return GIT_EUSER;
  }
  
  void test_online_clone__ssh_cert(void)
  {
  	g_options.fetch_opts.callbacks.certificate_check = ssh_certificate_check;
  
  	if (!_remote_ssh_fingerprint)
  		cl_skip();
  
  	cl_git_fail_with(GIT_EUSER, git_clone(&g_repo, _remote_url, "./foo", &g_options));
  }
  
  static char *read_key_file(const char *path)
  {
  	FILE *f;
  	char *buf;
  	long key_length;
  
  	if (!path || !*path)
  		return NULL;
  
  	cl_assert((f = fopen(path, "r")) != NULL);
  	cl_assert(fseek(f, 0, SEEK_END) != -1);
  	cl_assert((key_length = ftell(f)) != -1);
  	cl_assert(fseek(f, 0, SEEK_SET) != -1);
  	cl_assert((buf = malloc(key_length)) != NULL);
  	cl_assert(fread(buf, key_length, 1, f) == 1);
  	fclose(f);
  
  	return buf;
  }
  
  static int ssh_memory_cred_cb(git_credential **cred, const char *url, const char *user_from_url,
  		   unsigned int allowed_types, void *payload)
  {
  	GIT_UNUSED(url); GIT_UNUSED(user_from_url); GIT_UNUSED(payload);
  
  	if (allowed_types & GIT_CREDENTIAL_USERNAME)
  		return git_credential_username_new(cred, _remote_user);
  
  	if (allowed_types & GIT_CREDENTIAL_SSH_KEY)
  	{
  		char *pubkey = read_key_file(_remote_ssh_pubkey);
  		char *privkey = read_key_file(_remote_ssh_privkey);
  
  		int ret = git_credential_ssh_key_memory_new(cred, _remote_user, pubkey, privkey, _remote_ssh_passphrase);
  
  		if (privkey)
  			free(privkey);
  		if (pubkey)
  			free(pubkey);
  		return ret;
  	}
  
  	git_error_set(GIT_ERROR_NET, "unexpected cred type");
  	return -1;
  }
  
  void test_online_clone__ssh_memory_auth(void)
  {
  #ifndef GIT_SSH_MEMORY_CREDENTIALS
  	clar__skip();
  #endif
  	if (!_remote_url || !_remote_user || !_remote_ssh_privkey || strncmp(_remote_url, "ssh://", 5) != 0)
  		clar__skip();
  
  	g_options.fetch_opts.callbacks.credentials = ssh_memory_cred_cb;
  
  	cl_git_pass(git_clone(&g_repo, _remote_url, "./foo", &g_options));
  }
  
  static int fail_certificate_check(git_cert *cert, int valid, const char *host, void *payload)
  {
  	GIT_UNUSED(cert);
  	GIT_UNUSED(valid);
  	GIT_UNUSED(host);
  	GIT_UNUSED(payload);
  
  	return GIT_ECERTIFICATE;
  }
  
  void test_online_clone__certificate_invalid(void)
  {
  	g_options.fetch_opts.callbacks.certificate_check = fail_certificate_check;
  
  	cl_git_fail_with(git_clone(&g_repo, "https://github.com/libgit2/TestGitRepository", "./foo", &g_options),
  		GIT_ECERTIFICATE);
  
  #ifdef GIT_SSH
  	cl_git_fail_with(git_clone(&g_repo, "ssh://github.com/libgit2/TestGitRepository", "./foo", &g_options),
  		GIT_ECERTIFICATE);
  #endif
  }
  
  static int succeed_certificate_check(git_cert *cert, int valid, const char *host, void *payload)
  {
  	GIT_UNUSED(cert);
  	GIT_UNUSED(valid);
  	GIT_UNUSED(payload);
  
  	cl_assert_equal_s("github.com", host);
  
  	return 0;
  }
  
  void test_online_clone__certificate_valid(void)
  {
  	g_options.fetch_opts.callbacks.certificate_check = succeed_certificate_check;
  
  	cl_git_pass(git_clone(&g_repo, "https://github.com/libgit2/TestGitRepository", "./foo", &g_options));
  }
  
  void test_online_clone__start_with_http(void)
  {
  	g_options.fetch_opts.callbacks.certificate_check = succeed_certificate_check;
  
  	cl_git_pass(git_clone(&g_repo, "http://github.com/libgit2/TestGitRepository", "./foo", &g_options));
  }
  
  static int called_proxy_creds;
  static int proxy_cred_cb(git_credential **out, const char *url, const char *username, unsigned int allowed, void *payload)
  {
  	GIT_UNUSED(url);
  	GIT_UNUSED(username);
  	GIT_UNUSED(allowed);
  	GIT_UNUSED(payload);
  
  	called_proxy_creds = 1;
  	return git_credential_userpass_plaintext_new(out, _remote_proxy_user, _remote_proxy_pass);
  }
  
  static int proxy_cert_cb(git_cert *cert, int valid, const char *host, void *payload)
  {
  	char *colon;
  	size_t host_len;
  
  	GIT_UNUSED(cert);
  	GIT_UNUSED(valid);
  	GIT_UNUSED(payload);
  
  	cl_assert(_remote_proxy_host);
  
  	if ((colon = strchr(_remote_proxy_host, ':')) != NULL)
  		host_len = (colon - _remote_proxy_host);
  	else
  		host_len = strlen(_remote_proxy_host);
  
  	if (_remote_proxy_selfsigned != NULL &&
  	    strlen(host) == host_len &&
  	    strncmp(_remote_proxy_host, host, host_len) == 0)
  		valid = 1;
  
  	return valid ? 0 : GIT_ECERTIFICATE;
  }
  
  void test_online_clone__proxy_credentials_request(void)
  {
  	git_str url = GIT_STR_INIT;
  
  	if (!_remote_proxy_host || !_remote_proxy_user || !_remote_proxy_pass)
  		cl_skip();
  
  	cl_git_pass(git_str_printf(&url, "%s://%s/",
  		_remote_proxy_scheme ? _remote_proxy_scheme : "http",
  		_remote_proxy_host));
  
  	g_options.fetch_opts.proxy_opts.type = GIT_PROXY_SPECIFIED;
  	g_options.fetch_opts.proxy_opts.url = url.ptr;
  	g_options.fetch_opts.proxy_opts.credentials = proxy_cred_cb;
  	g_options.fetch_opts.proxy_opts.certificate_check = proxy_cert_cb;
  	called_proxy_creds = 0;
  	cl_git_pass(git_clone(&g_repo, "http://github.com/libgit2/TestGitRepository", "./foo", &g_options));
  	cl_assert(called_proxy_creds);
  
  	git_str_dispose(&url);
  }
  
  void test_online_clone__proxy_credentials_in_url(void)
  {
  	git_str url = GIT_STR_INIT;
  
  	if (!_remote_proxy_host || !_remote_proxy_user || !_remote_proxy_pass)
  		cl_skip();
  
  	cl_git_pass(git_str_printf(&url, "%s://%s:%s@%s/",
  		_remote_proxy_scheme ? _remote_proxy_scheme : "http",
  		_remote_proxy_user, _remote_proxy_pass, _remote_proxy_host));
  
  	g_options.fetch_opts.proxy_opts.type = GIT_PROXY_SPECIFIED;
  	g_options.fetch_opts.proxy_opts.url = url.ptr;
  	g_options.fetch_opts.proxy_opts.certificate_check = proxy_cert_cb;
  	called_proxy_creds = 0;
  	cl_git_pass(git_clone(&g_repo, "http://github.com/libgit2/TestGitRepository", "./foo", &g_options));
  	cl_assert(called_proxy_creds == 0);
  
  	git_str_dispose(&url);
  }
  
  void test_online_clone__proxy_credentials_in_environment(void)
  {
  	git_str url = GIT_STR_INIT;
  
  	if (!_remote_proxy_host || !_remote_proxy_user || !_remote_proxy_pass)
  		cl_skip();
  
  	_orig_http_proxy = cl_getenv("HTTP_PROXY");
  	_orig_https_proxy = cl_getenv("HTTPS_PROXY");
  	_orig_no_proxy = cl_getenv("NO_PROXY");
  	_orig_proxies_need_reset = 1;
  
  	g_options.fetch_opts.proxy_opts.type = GIT_PROXY_AUTO;
  	g_options.fetch_opts.proxy_opts.certificate_check = proxy_cert_cb;
  
  	cl_git_pass(git_str_printf(&url, "%s://%s:%s@%s/",
  		_remote_proxy_scheme ? _remote_proxy_scheme : "http",
  		_remote_proxy_user, _remote_proxy_pass, _remote_proxy_host));
  
  	cl_setenv("HTTP_PROXY", url.ptr);
  	cl_setenv("HTTPS_PROXY", url.ptr);
  	cl_setenv("NO_PROXY", NULL);
  
  	cl_git_pass(git_clone(&g_repo, "http://github.com/libgit2/TestGitRepository", "./foo", &g_options));
  
  	git_str_dispose(&url);
  }
  
  void test_online_clone__proxy_credentials_in_url_https(void)
  {
  	git_str url = GIT_STR_INIT;
  
  	if (!_remote_proxy_host || !_remote_proxy_user || !_remote_proxy_pass)
  		cl_skip();
  
  	cl_git_pass(git_str_printf(&url, "%s://%s:%s@%s/",
  		_remote_proxy_scheme ? _remote_proxy_scheme : "http",
  		_remote_proxy_user, _remote_proxy_pass, _remote_proxy_host));
  
  	g_options.fetch_opts.proxy_opts.type = GIT_PROXY_SPECIFIED;
  	g_options.fetch_opts.proxy_opts.url = url.ptr;
  	g_options.fetch_opts.proxy_opts.certificate_check = proxy_cert_cb;
  	g_options.fetch_opts.callbacks.certificate_check = ssl_cert;
  	called_proxy_creds = 0;
  	cl_git_pass(git_clone(&g_repo, "https://github.com/libgit2/TestGitRepository", "./foo", &g_options));
  	cl_assert(called_proxy_creds == 0);
  
  	git_str_dispose(&url);
  }
  
  void test_online_clone__proxy_auto_not_detected(void)
  {
  	g_options.fetch_opts.proxy_opts.type = GIT_PROXY_AUTO;
  
  	cl_git_pass(git_clone(&g_repo, "http://github.com/libgit2/TestGitRepository", "./foo", &g_options));
  }
  
  void test_online_clone__proxy_cred_callback_after_failed_url_creds(void)
  {
  	git_str url = GIT_STR_INIT;
  
  	if (!_remote_proxy_host || !_remote_proxy_user || !_remote_proxy_pass)
  		cl_skip();
  
  	cl_git_pass(git_str_printf(&url, "%s://invalid_user_name:INVALID_pass_WORD@%s/",
  		_remote_proxy_scheme ? _remote_proxy_scheme : "http",
  		_remote_proxy_host));
  
  	g_options.fetch_opts.proxy_opts.type = GIT_PROXY_SPECIFIED;
  	g_options.fetch_opts.proxy_opts.url = url.ptr;
  	g_options.fetch_opts.proxy_opts.credentials = proxy_cred_cb;
  	g_options.fetch_opts.proxy_opts.certificate_check = proxy_cert_cb;
  	called_proxy_creds = 0;
  	cl_git_pass(git_clone(&g_repo, "http://github.com/libgit2/TestGitRepository", "./foo", &g_options));
  	cl_assert(called_proxy_creds);
  
  	git_str_dispose(&url);
  }
  
  void test_online_clone__azurerepos(void)
  {
  	cl_git_pass(git_clone(&g_repo, "https://libgit2@dev.azure.com/libgit2/test/_git/test", "./foo", &g_options));
  	cl_assert(git_fs_path_exists("./foo/master.txt"));
  }
  
  void test_online_clone__path_whitespace(void)
  {
  	cl_git_pass(git_clone(&g_repo, "https://libgit2@dev.azure.com/libgit2/test/_git/spaces%20in%20the%20name", "./foo", &g_options));
  	cl_assert(git_fs_path_exists("./foo/master.txt"));
  }
  
  void test_online_clone__redirect_default_succeeds_for_initial(void)
  {
  	git_clone_options options = GIT_CLONE_OPTIONS_INIT;
  
  	if (!_remote_redirect_initial || !_remote_redirect_subsequent)
  		cl_skip();
  
  	cl_git_pass(git_clone(&g_repo, _remote_redirect_initial, "./initial", &options));
  }
  
  void test_online_clone__redirect_default_fails_for_subsequent(void)
  {
  	git_clone_options options = GIT_CLONE_OPTIONS_INIT;
  
  	if (!_remote_redirect_initial || !_remote_redirect_subsequent)
  		cl_skip();
  
  	cl_git_fail(git_clone(&g_repo, _remote_redirect_subsequent, "./fail", &options));
  }
  
  void test_online_clone__redirect_none(void)
  {
  	git_clone_options options = GIT_CLONE_OPTIONS_INIT;
  
  	if (!_remote_redirect_initial)
  		cl_skip();
  
  	options.fetch_opts.follow_redirects = GIT_REMOTE_REDIRECT_NONE;
  
  	cl_git_fail(git_clone(&g_repo, _remote_redirect_initial, "./fail", &options));
  }
  
  void test_online_clone__redirect_initial_succeeds_for_initial(void)
  {
  	git_clone_options options = GIT_CLONE_OPTIONS_INIT;
  
  	if (!_remote_redirect_initial || !_remote_redirect_subsequent)
  		cl_skip();
  
  	options.fetch_opts.follow_redirects = GIT_REMOTE_REDIRECT_INITIAL;
  
  	cl_git_pass(git_clone(&g_repo, _remote_redirect_initial, "./initial", &options));
  }
  
  void test_online_clone__redirect_initial_fails_for_subsequent(void)
  {
  	git_clone_options options = GIT_CLONE_OPTIONS_INIT;
  
  	if (!_remote_redirect_initial || !_remote_redirect_subsequent)
  		cl_skip();
  
  	options.fetch_opts.follow_redirects = GIT_REMOTE_REDIRECT_INITIAL;
  
  	cl_git_fail(git_clone(&g_repo, _remote_redirect_subsequent, "./fail", &options));
  }
  

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