Пример #1
0
static int user_agent(git_buf *ua)
{
	const char *custom = git_libgit2__user_agent();

	git_buf_clear(ua);
	git_buf_PUTS(ua, "git/1.0 (");

	if (custom)
		git_buf_puts(ua, custom);
	else
		git_buf_PUTS(ua, "libgit2 " LIBGIT2_VERSION);

	return git_buf_putc(ua, ')');
}
Пример #2
0
void giterr_set(int error_class, const char *string, ...)
{
	git_buf buf = GIT_BUF_INIT;
	va_list arglist;
#ifdef GIT_WIN32
	DWORD win32_error_code = (error_class == GITERR_OS) ? GetLastError() : 0;
#endif
	int error_code = (error_class == GITERR_OS) ? errno : 0;

	va_start(arglist, string);
	git_buf_vprintf(&buf, string, arglist);
	va_end(arglist);

	if (error_class == GITERR_OS) {
#ifdef GIT_WIN32
		if (win32_error_code) {
			char *lpMsgBuf;

			if (FormatMessageA(
					FORMAT_MESSAGE_ALLOCATE_BUFFER |
					FORMAT_MESSAGE_FROM_SYSTEM |
					FORMAT_MESSAGE_IGNORE_INSERTS,
					NULL, win32_error_code, 0, (LPSTR)&lpMsgBuf, 0, NULL)) {
				git_buf_PUTS(&buf, ": ");
				git_buf_puts(&buf, lpMsgBuf);
				LocalFree(lpMsgBuf);
			}

			SetLastError(0);
		}
		else
#endif
		if (error_code) {
			git_buf_PUTS(&buf, ": ");
			git_buf_puts(&buf, strerror(error_code));
		}

		if (error_code)
			errno = 0;
	}

	if (!git_buf_oom(&buf))
		set_error(error_class, git_buf_detach(&buf));
}
Пример #3
0
void git_error_set(int error_class, const char *string, ...)
{
	va_list arglist;
#ifdef GIT_WIN32
	DWORD win32_error_code = (error_class == GIT_ERROR_OS) ? GetLastError() : 0;
#endif
	int error_code = (error_class == GIT_ERROR_OS) ? errno : 0;
	git_buf *buf = &GIT_GLOBAL->error_buf;

	git_buf_clear(buf);
	if (string) {
		va_start(arglist, string);
		git_buf_vprintf(buf, string, arglist);
		va_end(arglist);

		if (error_class == GIT_ERROR_OS)
			git_buf_PUTS(buf, ": ");
	}

	if (error_class == GIT_ERROR_OS) {
#ifdef GIT_WIN32
		char * win32_error = git_win32_get_error_message(win32_error_code);
		if (win32_error) {
			git_buf_puts(buf, win32_error);
			git__free(win32_error);

			SetLastError(0);
		}
		else
#endif
		if (error_code)
			git_buf_puts(buf, strerror(error_code));

		if (error_code)
			errno = 0;
	}

	if (!git_buf_oom(buf))
		set_error_from_buffer(error_class);
}
Пример #4
0
static int winhttp_stream_connect(winhttp_stream *s)
{
	winhttp_subtransport *t = OWNING_SUBTRANSPORT(s);
	git_buf buf = GIT_BUF_INIT;
	char *proxy_url = NULL;
	wchar_t ct[MAX_CONTENT_TYPE_LEN];
	LPCWSTR types[] = { L"*/*", NULL };
	BOOL peerdist = FALSE;
	int error = -1;
	unsigned long disable_redirects = WINHTTP_DISABLE_REDIRECTS;
	int default_timeout = TIMEOUT_INFINITE;
	int default_connect_timeout = DEFAULT_CONNECT_TIMEOUT;
	size_t i;
	const git_proxy_options *proxy_opts;

	/* Prepare URL */
	git_buf_printf(&buf, "%s%s", t->connection_data.path, s->service_url);

	if (git_buf_oom(&buf))
		return -1;

	/* Convert URL to wide characters */
	if (git__utf8_to_16_alloc(&s->request_uri, git_buf_cstr(&buf)) < 0) {
		giterr_set(GITERR_OS, "failed to convert string to wide form");
		goto on_error;
	}

	/* Establish request */
	s->request = WinHttpOpenRequest(
			t->connection,
			s->verb,
			s->request_uri,
			NULL,
			WINHTTP_NO_REFERER,
			types,
			t->connection_data.use_ssl ? WINHTTP_FLAG_SECURE : 0);

	if (!s->request) {
		giterr_set(GITERR_OS, "failed to open request");
		goto on_error;
	}

	if (!WinHttpSetTimeouts(s->request, default_timeout, default_connect_timeout, default_timeout, default_timeout)) {
		giterr_set(GITERR_OS, "failed to set timeouts for WinHTTP");
		goto on_error;
	}

	proxy_opts = &t->owner->proxy;
	if (proxy_opts->type == GIT_PROXY_AUTO) {
		/* Set proxy if necessary */
		if (git_remote__get_http_proxy(t->owner->owner, !!t->connection_data.use_ssl, &proxy_url) < 0)
			goto on_error;
	}
	else if (proxy_opts->type == GIT_PROXY_SPECIFIED) {
		proxy_url = git__strdup(proxy_opts->url);
		GITERR_CHECK_ALLOC(proxy_url);
	}

	if (proxy_url) {
		git_buf processed_url = GIT_BUF_INIT;
		WINHTTP_PROXY_INFO proxy_info;
		wchar_t *proxy_wide;

		if (!git__prefixcmp(proxy_url, SCHEME_HTTP)) {
			t->proxy_connection_data.use_ssl = false;
		} else if (!git__prefixcmp(proxy_url, SCHEME_HTTPS)) {
			t->proxy_connection_data.use_ssl = true;
		} else {
			giterr_set(GITERR_NET, "invalid URL: '%s'", proxy_url);
			return -1;
		}

		gitno_connection_data_free_ptrs(&t->proxy_connection_data);

		if ((error = gitno_extract_url_parts(&t->proxy_connection_data.host, &t->proxy_connection_data.port, NULL,
				&t->proxy_connection_data.user, &t->proxy_connection_data.pass, proxy_url, NULL)) < 0)
			goto on_error;

		if (t->proxy_connection_data.user && t->proxy_connection_data.pass) {
			if (t->proxy_cred) {
				t->proxy_cred->free(t->proxy_cred);
			}

			if ((error = git_cred_userpass_plaintext_new(&t->proxy_cred, t->proxy_connection_data.user, t->proxy_connection_data.pass)) < 0)
				goto on_error;
		}

		if (t->proxy_connection_data.use_ssl)
			git_buf_PUTS(&processed_url, SCHEME_HTTPS);
		else
			git_buf_PUTS(&processed_url, SCHEME_HTTP);

		git_buf_puts(&processed_url, t->proxy_connection_data.host);
		if (t->proxy_connection_data.port)
			git_buf_printf(&processed_url, ":%s", t->proxy_connection_data.port);

		if (git_buf_oom(&processed_url)) {
			giterr_set_oom();
			error = -1;
			goto on_error;
		}

		/* Convert URL to wide characters */
		error = git__utf8_to_16_alloc(&proxy_wide, processed_url.ptr);
		git_buf_free(&processed_url);
		if (error < 0)
			goto on_error;

		proxy_info.dwAccessType = WINHTTP_ACCESS_TYPE_NAMED_PROXY;
		proxy_info.lpszProxy = proxy_wide;
		proxy_info.lpszProxyBypass = NULL;

		if (!WinHttpSetOption(s->request,
			WINHTTP_OPTION_PROXY,
			&proxy_info,
			sizeof(WINHTTP_PROXY_INFO))) {
			giterr_set(GITERR_OS, "failed to set proxy");
			git__free(proxy_wide);
			goto on_error;
		}

		git__free(proxy_wide);

		if (t->proxy_cred) {
			if (t->proxy_cred->credtype == GIT_CREDTYPE_USERPASS_PLAINTEXT) {
				if ((error = apply_userpass_credential_proxy(s->request, t->proxy_cred)) < 0)
					goto on_error;
			}
		}

	}

	/* Disable WinHTTP redirects so we can handle them manually. Why, you ask?
	 * http://social.msdn.microsoft.com/Forums/windowsdesktop/en-US/b2ff8879-ab9f-4218-8f09-16d25dff87ae
	 */
	if (!WinHttpSetOption(s->request,
		WINHTTP_OPTION_DISABLE_FEATURE,
		&disable_redirects,
		sizeof(disable_redirects))) {
			giterr_set(GITERR_OS, "failed to disable redirects");
			goto on_error;
	}

	/* Strip unwanted headers (X-P2P-PeerDist, X-P2P-PeerDistEx) that WinHTTP
	 * adds itself. This option may not be supported by the underlying
	 * platform, so we do not error-check it */
	WinHttpSetOption(s->request,
		WINHTTP_OPTION_PEERDIST_EXTENSION_STATE,
		&peerdist,
		sizeof(peerdist));

	/* Send Pragma: no-cache header */
	if (!WinHttpAddRequestHeaders(s->request, pragma_nocache, (ULONG) -1L, WINHTTP_ADDREQ_FLAG_ADD)) {
		giterr_set(GITERR_OS, "failed to add a header to the request");
		goto on_error;
	}

	if (post_verb == s->verb) {
		/* Send Content-Type and Accept headers -- only necessary on a POST */
		git_buf_clear(&buf);
		if (git_buf_printf(&buf,
			"Content-Type: application/x-git-%s-request",
			s->service) < 0)
			goto on_error;

		if (git__utf8_to_16(ct, MAX_CONTENT_TYPE_LEN, git_buf_cstr(&buf)) < 0) {
			giterr_set(GITERR_OS, "failed to convert content-type to wide characters");
			goto on_error;
		}

		if (!WinHttpAddRequestHeaders(s->request, ct, (ULONG)-1L,
			WINHTTP_ADDREQ_FLAG_ADD | WINHTTP_ADDREQ_FLAG_REPLACE)) {
			giterr_set(GITERR_OS, "failed to add a header to the request");
			goto on_error;
		}

		git_buf_clear(&buf);
		if (git_buf_printf(&buf,
			"Accept: application/x-git-%s-result",
			s->service) < 0)
			goto on_error;

		if (git__utf8_to_16(ct, MAX_CONTENT_TYPE_LEN, git_buf_cstr(&buf)) < 0) {
			giterr_set(GITERR_OS, "failed to convert accept header to wide characters");
			goto on_error;
		}

		if (!WinHttpAddRequestHeaders(s->request, ct, (ULONG)-1L,
			WINHTTP_ADDREQ_FLAG_ADD | WINHTTP_ADDREQ_FLAG_REPLACE)) {
			giterr_set(GITERR_OS, "failed to add a header to the request");
			goto on_error;
		}
	}

	for (i = 0; i < t->owner->custom_headers.count; i++) {
		if (t->owner->custom_headers.strings[i]) {
			git_buf_clear(&buf);
			git_buf_puts(&buf, t->owner->custom_headers.strings[i]);
			if (git__utf8_to_16(ct, MAX_CONTENT_TYPE_LEN, git_buf_cstr(&buf)) < 0) {
				giterr_set(GITERR_OS, "failed to convert custom header to wide characters");
				goto on_error;
			}

			if (!WinHttpAddRequestHeaders(s->request, ct, (ULONG)-1L,
				WINHTTP_ADDREQ_FLAG_ADD | WINHTTP_ADDREQ_FLAG_REPLACE)) {
				giterr_set(GITERR_OS, "failed to add a header to the request");
				goto on_error;
			}
		}
	}

	/* If requested, disable certificate validation */
	if (t->connection_data.use_ssl) {
		int flags;

		if (t->owner->parent.read_flags(&t->owner->parent, &flags) < 0)
			goto on_error;
	}

	/* If we have a credential on the subtransport, apply it to the request */
	if (t->cred &&
		t->cred->credtype == GIT_CREDTYPE_USERPASS_PLAINTEXT &&
		apply_userpass_credential(s->request, t->auth_mechanisms, t->cred) < 0)
		goto on_error;
	else if (t->cred &&
		t->cred->credtype == GIT_CREDTYPE_DEFAULT &&
		apply_default_credentials(s->request, t->auth_mechanisms) < 0)
		goto on_error;

	/* If no other credentials have been applied and the URL has username and
	 * password, use those */
	if (!t->cred && t->connection_data.user && t->connection_data.pass) {
		if (!t->url_cred &&
			git_cred_userpass_plaintext_new(&t->url_cred, t->connection_data.user, t->connection_data.pass) < 0)
			goto on_error;
		if (apply_userpass_credential(s->request, GIT_WINHTTP_AUTH_BASIC, t->url_cred) < 0)
			goto on_error;
	}

	/* We've done everything up to calling WinHttpSendRequest. */

	error = 0;

on_error:
	if (error < 0)
		winhttp_stream_close(s);

	git__free(proxy_url);
	git_buf_free(&buf);
	return error;
}