/* This function performs retries on calls to MoveFile in order
* to provide enhanced reliability in the face of antivirus
* agents that may be scanning the source (or in the case that
* the source is a directory, a child of the source). */
int cl_rename(const char *source, const char *dest)
{
wchar_t source_utf16[GIT_WIN_PATH];
wchar_t dest_utf16[GIT_WIN_PATH];
unsigned retries = 1;
git__utf8_to_16(source_utf16, GIT_WIN_PATH, source);
git__utf8_to_16(dest_utf16, GIT_WIN_PATH, dest);
while (!MoveFileW(source_utf16, dest_utf16)) {
/* Only retry if the error is ERROR_ACCESS_DENIED;
* this may indicate that an antivirus agent is
* preventing the rename from source to target */
if (retries > 5 ||
ERROR_ACCESS_DENIED != GetLastError())
return -1;
/* With 5 retries and a coefficient of 10ms, the maximum
* delay here is 550 ms */
Sleep(10 * retries * retries);
retries++;
}
return 0;
}
int git_win32_path_from_utf8(git_win32_path out, const char *src)
{
wchar_t *dest = out;
/* All win32 paths are in NT-prefixed format, beginning with "\\?\". */
memcpy(dest, PATH__NT_NAMESPACE, sizeof(wchar_t) * PATH__NT_NAMESPACE_LEN);
dest += PATH__NT_NAMESPACE_LEN;
/* See if this is an absolute path (beginning with a drive letter) */
if (path__is_absolute(src)) {
if (git__utf8_to_16(dest, MAX_PATH, src) < 0)
return -1;
}
/* File-prefixed NT-style paths beginning with \\?\ */
else if (path__is_nt_namespace(src)) {
/* Skip the NT prefix, the destination already contains it */
if (git__utf8_to_16(dest, MAX_PATH, src + PATH__NT_NAMESPACE_LEN) < 0)
return -1;
}
/* UNC paths */
else if (path__is_unc(src)) {
memcpy(dest, L"UNC\\", sizeof(wchar_t) * 4);
dest += 4;
/* Skip the leading "\\" */
if (git__utf8_to_16(dest, MAX_PATH - 2, src + 2) < 0)
return -1;
}
/* Absolute paths omitting the drive letter */
else if (src[0] == '\\' || src[0] == '/') {
if (path__cwd(dest, MAX_PATH) < 0)
return -1;
if (!path__is_absolute(dest)) {
errno = ENOENT;
return -1;
}
/* Skip the drive letter specification ("C:") */
if (git__utf8_to_16(dest + 2, MAX_PATH - 2, src) < 0)
return -1;
}
/* Relative paths */
else {
int cwd_len;
if ((cwd_len = git_win32_path__cwd(dest, MAX_PATH)) < 0)
return -1;
dest[cwd_len++] = L'\\';
if (git__utf8_to_16(dest + cwd_len, MAX_PATH - cwd_len, src) < 0)
return -1;
}
return git_win32_path_canonicalize(out);
}
int p_unlink(const char *path)
{
wchar_t buf[GIT_WIN_PATH];
git__utf8_to_16(buf, GIT_WIN_PATH, path);
_wchmod(buf, 0666);
return _wunlink(buf);
}
bool git_path_is_empty_dir(const char *path)
{
git_buf pathbuf = GIT_BUF_INIT;
HANDLE hFind = INVALID_HANDLE_VALUE;
wchar_t wbuf[GIT_WIN_PATH];
WIN32_FIND_DATAW ffd;
bool retval = true;
if (!git_path_isdir(path)) return false;
git_buf_printf(&pathbuf, "%s\\*", path);
git__utf8_to_16(wbuf, GIT_WIN_PATH, git_buf_cstr(&pathbuf));
hFind = FindFirstFileW(wbuf, &ffd);
if (INVALID_HANDLE_VALUE == hFind) {
giterr_set(GITERR_OS, "Couldn't open '%s'", path);
return false;
}
do {
if (!git_path_is_dot_or_dotdotW(ffd.cFileName)) {
retval = false;
}
} while (FindNextFileW(hFind, &ffd) != 0);
FindClose(hFind);
git_buf_free(&pathbuf);
return retval;
}
int win32_find_file(git_buf *path, const struct win32_path *root, const char *filename)
{
size_t len, alloc_len;
wchar_t *file_utf16 = NULL;
char file_utf8[GIT_PATH_MAX];
if (!root || !filename || (len = strlen(filename)) == 0)
return GIT_ENOTFOUND;
/* allocate space for wchar_t path to file */
alloc_len = root->len + len + 2;
file_utf16 = git__calloc(alloc_len, sizeof(wchar_t));
GITERR_CHECK_ALLOC(file_utf16);
/* append root + '\\' + filename as wchar_t */
memcpy(file_utf16, root->path, root->len * sizeof(wchar_t));
if (*filename == '/' || *filename == '\\')
filename++;
git__utf8_to_16(file_utf16 + root->len - 1, alloc_len, filename);
/* check access */
if (_waccess(file_utf16, F_OK) < 0) {
git__free(file_utf16);
return GIT_ENOTFOUND;
}
git__utf16_to_8(file_utf8, file_utf16);
git_path_mkposix(file_utf8);
git_buf_sets(path, file_utf8);
git__free(file_utf16);
return 0;
}
int cl_setenv(const char *name, const char *value)
{
wchar_t name_utf16[GIT_WIN_PATH];
wchar_t value_utf16[GIT_WIN_PATH];
git__utf8_to_16(name_utf16, GIT_WIN_PATH, name);
if (value) {
git__utf8_to_16(value_utf16, GIT_WIN_PATH, value);
cl_assert(SetEnvironmentVariableW(name_utf16, value_utf16));
} else {
/* Windows XP returns 0 (failed) when passing NULL for lpValue when
* lpName does not exist in the environment block. This behavior
* seems to have changed in later versions. Don't check return value
* of SetEnvironmentVariable when passing NULL for lpValue.
*/
SetEnvironmentVariableW(name_utf16, NULL);
}
return 0;
}
int git_futils_creat_locked(const char *path, const mode_t mode)
{
int fd;
#ifdef GIT_WIN32
wchar_t buf[GIT_WIN_PATH];
git__utf8_to_16(buf, GIT_WIN_PATH, path);
fd = _wopen(buf, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY | O_EXCL, mode);
#else
fd = open(path, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY | O_EXCL, mode);
#endif
if (fd < 0) {
giterr_set(GITERR_OS, "Failed to create locked file '%s'", path);
return -1;
}
return fd;
}
char *cl_getenv(const char *name)
{
wchar_t name_utf16[GIT_WIN_PATH];
DWORD alloc_len;
wchar_t *value_utf16;
char *value_utf8;
git__utf8_to_16(name_utf16, GIT_WIN_PATH, name);
alloc_len = GetEnvironmentVariableW(name_utf16, NULL, 0);
if (alloc_len <= 0)
return NULL;
alloc_len = GIT_WIN_PATH;
cl_assert(value_utf16 = git__calloc(alloc_len, sizeof(wchar_t)));
GetEnvironmentVariableW(name_utf16, value_utf16, alloc_len);
cl_assert(value_utf8 = git__malloc(alloc_len));
git__utf16_to_8(value_utf8, value_utf16);
git__free(value_utf16);
return value_utf8;
}
static int do_lstat(
const char *file_name, struct stat *buf, int posix_enotdir)
{
WIN32_FILE_ATTRIBUTE_DATA fdata;
wchar_t fbuf[GIT_WIN_PATH], lastch;
int flen;
flen = git__utf8_to_16(fbuf, GIT_WIN_PATH, file_name);
/* truncate trailing slashes */
for (; flen > 0; --flen) {
lastch = fbuf[flen - 1];
if (WIN32_IS_WSEP(lastch))
fbuf[flen - 1] = L'\0';
else if (lastch != L'\0')
break;
}
if (GetFileAttributesExW(fbuf, GetFileExInfoStandard, &fdata)) {
int fMode = S_IREAD;
if (!buf)
return 0;
if (fdata.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
fMode |= S_IFDIR;
else
fMode |= S_IFREG;
if (!(fdata.dwFileAttributes & FILE_ATTRIBUTE_READONLY))
fMode |= S_IWRITE;
if (fdata.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT)
fMode |= S_IFLNK;
buf->st_ino = 0;
buf->st_gid = 0;
buf->st_uid = 0;
buf->st_nlink = 1;
buf->st_mode = (mode_t)fMode;
buf->st_size = ((git_off_t)fdata.nFileSizeHigh << 32) + fdata.nFileSizeLow;
buf->st_dev = buf->st_rdev = (_getdrive() - 1);
buf->st_atime = filetime_to_time_t(&(fdata.ftLastAccessTime));
buf->st_mtime = filetime_to_time_t(&(fdata.ftLastWriteTime));
buf->st_ctime = filetime_to_time_t(&(fdata.ftCreationTime));
/* Windows symlinks have zero file size, call readlink to determine
* the length of the path pointed to, which we expect everywhere else
*/
if (S_ISLNK(fMode)) {
char target[GIT_WIN_PATH];
int readlink_result;
readlink_result = p_readlink(file_name, target, GIT_WIN_PATH);
if (readlink_result == -1)
return -1;
buf->st_size = strlen(target);
}
return 0;
}
errno = ENOENT;
/* We need POSIX behavior, then ENOTDIR must set when any of the folders in the
* file path is a regular file,otherwise ENOENT must be set.
*/
if (posix_enotdir) {
/* scan up path until we find an existing item */
while (1) {
/* remove last directory component */
for (--flen; flen > 0 && !WIN32_IS_WSEP(fbuf[flen]); --flen);
if (flen <= 0)
break;
fbuf[flen] = L'\0';
if (GetFileAttributesExW(fbuf, GetFileExInfoStandard, &fdata)) {
if (!(fdata.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY))
errno = ENOTDIR;
break;
}
}
}
return -1;
}
int p_readlink(const char *link, char *target, size_t target_len)
{
typedef DWORD (WINAPI *fpath_func)(HANDLE, LPWSTR, DWORD, DWORD);
static fpath_func pGetFinalPath = NULL;
HANDLE hFile;
DWORD dwRet;
wchar_t link_w[GIT_WIN_PATH];
wchar_t* target_w;
int error = 0;
assert(link && target && target_len > 0);
/*
* Try to load the pointer to pGetFinalPath dynamically, because
* it is not available in platforms older than Vista
*/
if (pGetFinalPath == NULL) {
HMODULE module = GetModuleHandle("kernel32");
if (module != NULL)
pGetFinalPath = (fpath_func)GetProcAddress(module, "GetFinalPathNameByHandleW");
if (pGetFinalPath == NULL) {
giterr_set(GITERR_OS,
"'GetFinalPathNameByHandleW' is not available in this platform");
return -1;
}
}
git__utf8_to_16(link_w, GIT_WIN_PATH, link);
hFile = CreateFileW(link_w, // file to open
GENERIC_READ, // open for reading
FILE_SHARE_READ, // share for reading
NULL, // default security
OPEN_EXISTING, // existing file only
FILE_FLAG_BACKUP_SEMANTICS, // normal file
NULL); // no attr. template
if (hFile == INVALID_HANDLE_VALUE) {
giterr_set(GITERR_OS, "Cannot open '%s' for reading", link);
return -1;
}
target_w = (wchar_t*)git__malloc(target_len * sizeof(wchar_t));
GITERR_CHECK_ALLOC(target_w);
dwRet = pGetFinalPath(hFile, target_w, (DWORD)target_len, 0x0);
if (dwRet == 0 ||
dwRet >= target_len ||
!WideCharToMultiByte(CP_UTF8, 0, target_w, -1, target,
(int)(target_len * sizeof(char)), NULL, NULL))
error = -1;
git__free(target_w);
CloseHandle(hFile);
if (error)
return error;
/* Skip first 4 characters if they are "\\?\" */
if (dwRet > 4 &&
target[0] == '\\' && target[1] == '\\' &&
target[2] == '?' && target[3] == '\\')
{
unsigned int offset = 4;
dwRet -= 4;
/* \??\UNC\ */
if (dwRet > 7 &&
target[4] == 'U' && target[5] == 'N' && target[6] == 'C')
{
offset += 2;
dwRet -= 2;
target[offset] = '\\';
}
memmove(target, target + offset, dwRet);
}
target[dwRet] = '\0';
return dwRet;
}
static int winhttp_stream_read(
git_smart_subtransport_stream *stream,
char *buffer,
size_t buf_size,
size_t *bytes_read)
{
winhttp_stream *s = (winhttp_stream *)stream;
winhttp_subtransport *t = OWNING_SUBTRANSPORT(s);
DWORD dw_bytes_read;
char replay_count = 0;
int error;
replay:
/* Enforce a reasonable cap on the number of replays */
if (++replay_count >= 7) {
giterr_set(GITERR_NET, "Too many redirects or authentication replays");
return -1;
}
/* Connect if necessary */
if (!s->request && winhttp_stream_connect(s) < 0)
return -1;
if (!s->received_response) {
DWORD status_code, status_code_length, content_type_length, bytes_written;
char expected_content_type_8[MAX_CONTENT_TYPE_LEN];
wchar_t expected_content_type[MAX_CONTENT_TYPE_LEN], content_type[MAX_CONTENT_TYPE_LEN];
if (!s->sent_request) {
if ((error = send_request(s, s->post_body_len, 0)) < 0)
return error;
s->sent_request = 1;
}
if (s->chunked) {
assert(s->verb == post_verb);
/* Flush, if necessary */
if (s->chunk_buffer_len > 0 &&
write_chunk(s->request, s->chunk_buffer, s->chunk_buffer_len) < 0)
return -1;
s->chunk_buffer_len = 0;
/* Write the final chunk. */
if (!WinHttpWriteData(s->request,
"0\r\n\r\n", 5,
&bytes_written)) {
giterr_set(GITERR_OS, "Failed to write final chunk");
return -1;
}
}
else if (s->post_body) {
char *buffer;
DWORD len = s->post_body_len, bytes_read;
if (INVALID_SET_FILE_POINTER == SetFilePointer(s->post_body,
0, 0, FILE_BEGIN) &&
NO_ERROR != GetLastError()) {
giterr_set(GITERR_OS, "Failed to reset file pointer");
return -1;
}
buffer = git__malloc(CACHED_POST_BODY_BUF_SIZE);
while (len > 0) {
DWORD bytes_written;
if (!ReadFile(s->post_body, buffer,
min(CACHED_POST_BODY_BUF_SIZE, len),
&bytes_read, NULL) ||
!bytes_read) {
git__free(buffer);
giterr_set(GITERR_OS, "Failed to read from temp file");
return -1;
}
if (!WinHttpWriteData(s->request, buffer,
bytes_read, &bytes_written)) {
git__free(buffer);
giterr_set(GITERR_OS, "Failed to write data");
return -1;
}
len -= bytes_read;
assert(bytes_read == bytes_written);
}
git__free(buffer);
/* Eagerly close the temp file */
CloseHandle(s->post_body);
s->post_body = NULL;
}
if (!WinHttpReceiveResponse(s->request, 0)) {
giterr_set(GITERR_OS, "Failed to receive response");
return -1;
}
/* Verify that we got a 200 back */
status_code_length = sizeof(status_code);
if (!WinHttpQueryHeaders(s->request,
WINHTTP_QUERY_STATUS_CODE | WINHTTP_QUERY_FLAG_NUMBER,
WINHTTP_HEADER_NAME_BY_INDEX,
&status_code, &status_code_length,
WINHTTP_NO_HEADER_INDEX)) {
giterr_set(GITERR_OS, "Failed to retrieve status code");
return -1;
}
/* The implementation of WinHTTP prior to Windows 7 will not
* redirect to an identical URI. Some Git hosters use self-redirects
* as part of their DoS mitigation strategy. Check first to see if we
* have a redirect status code, and that we haven't already streamed
* a post body. (We can't replay a streamed POST.) */
if (!s->chunked &&
(HTTP_STATUS_MOVED == status_code ||
HTTP_STATUS_REDIRECT == status_code ||
(HTTP_STATUS_REDIRECT_METHOD == status_code &&
get_verb == s->verb) ||
HTTP_STATUS_REDIRECT_KEEP_VERB == status_code)) {
/* Check for Windows 7. This workaround is only necessary on
* Windows Vista and earlier. Windows 7 is version 6.1. */
wchar_t *location;
DWORD location_length;
char *location8;
/* OK, fetch the Location header from the redirect. */
if (WinHttpQueryHeaders(s->request,
WINHTTP_QUERY_LOCATION,
WINHTTP_HEADER_NAME_BY_INDEX,
WINHTTP_NO_OUTPUT_BUFFER,
&location_length,
WINHTTP_NO_HEADER_INDEX) ||
GetLastError() != ERROR_INSUFFICIENT_BUFFER) {
giterr_set(GITERR_OS, "Failed to read Location header");
return -1;
}
location = git__malloc(location_length);
GITERR_CHECK_ALLOC(location);
if (!WinHttpQueryHeaders(s->request,
WINHTTP_QUERY_LOCATION,
WINHTTP_HEADER_NAME_BY_INDEX,
location,
&location_length,
WINHTTP_NO_HEADER_INDEX)) {
giterr_set(GITERR_OS, "Failed to read Location header");
git__free(location);
return -1;
}
/* Convert the Location header to UTF-8 */
if (git__utf16_to_8_alloc(&location8, location) < 0) {
giterr_set(GITERR_OS, "Failed to convert Location header to UTF-8");
git__free(location);
return -1;
}
git__free(location);
/* Replay the request */
winhttp_stream_close(s);
if (!git__prefixcmp_icase(location8, prefix_https)) {
/* Upgrade to secure connection; disconnect and start over */
if (gitno_connection_data_from_url(&t->connection_data, location8, s->service_url) < 0) {
git__free(location8);
return -1;
}
winhttp_close_connection(t);
if (winhttp_connect(t) < 0)
return -1;
}
git__free(location8);
goto replay;
}
/* Handle authentication failures */
if (HTTP_STATUS_DENIED == status_code && get_verb == s->verb) {
int allowed_types;
if (parse_unauthorized_response(s->request, &allowed_types, &t->auth_mechanism) < 0)
return -1;
if (allowed_types &&
(!t->cred || 0 == (t->cred->credtype & allowed_types))) {
int cred_error = 1;
/* Start with the user-supplied credential callback, if present */
if (t->owner->cred_acquire_cb) {
cred_error = t->owner->cred_acquire_cb(&t->cred, t->owner->url,
t->connection_data.user, allowed_types, t->owner->cred_acquire_payload);
if (cred_error < 0)
return cred_error;
}
/* Invoke the fallback credentials acquisition callback if necessary */
if (cred_error > 0) {
cred_error = fallback_cred_acquire_cb(&t->cred, t->owner->url,
t->connection_data.user, allowed_types, NULL);
if (cred_error < 0)
return cred_error;
}
if (!cred_error) {
assert(t->cred);
winhttp_stream_close(s);
/* Successfully acquired a credential */
goto replay;
}
}
}
if (HTTP_STATUS_OK != status_code) {
giterr_set(GITERR_NET, "Request failed with status code: %d", status_code);
return -1;
}
/* Verify that we got the correct content-type back */
if (post_verb == s->verb)
p_snprintf(expected_content_type_8, MAX_CONTENT_TYPE_LEN, "application/x-git-%s-result", s->service);
else
p_snprintf(expected_content_type_8, MAX_CONTENT_TYPE_LEN, "application/x-git-%s-advertisement", s->service);
if (git__utf8_to_16(expected_content_type, MAX_CONTENT_TYPE_LEN, expected_content_type_8) < 0) {
giterr_set(GITERR_OS, "Failed to convert expected content-type to wide characters");
return -1;
}
content_type_length = sizeof(content_type);
if (!WinHttpQueryHeaders(s->request,
WINHTTP_QUERY_CONTENT_TYPE,
WINHTTP_HEADER_NAME_BY_INDEX,
&content_type, &content_type_length,
WINHTTP_NO_HEADER_INDEX)) {
giterr_set(GITERR_OS, "Failed to retrieve response content-type");
return -1;
}
if (wcscmp(expected_content_type, content_type)) {
giterr_set(GITERR_NET, "Received unexpected content-type");
return -1;
}
s->received_response = 1;
}
if (!WinHttpReadData(s->request,
(LPVOID)buffer,
(DWORD)buf_size,
&dw_bytes_read))
{
giterr_set(GITERR_OS, "Failed to read data");
return -1;
}
*bytes_read = dw_bytes_read;
return 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;
/* 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;
}
/* Set proxy if necessary */
if (git_remote__get_http_proxy(t->owner->owner, !!t->connection_data.use_ssl, &proxy_url) < 0)
goto on_error;
if (proxy_url) {
WINHTTP_PROXY_INFO proxy_info;
wchar_t *proxy_wide;
/* Convert URL to wide characters */
int proxy_wide_len = git__utf8_to_16_alloc(&proxy_wide, proxy_url);
if (proxy_wide_len < 0) {
giterr_set(GITERR_OS, "Failed to convert string to wide form");
goto on_error;
}
/* Strip any trailing forward slash on the proxy URL;
* WinHTTP doesn't like it if one is present */
if (proxy_wide_len > 1 && L'/' == proxy_wide[proxy_wide_len - 2])
proxy_wide[proxy_wide_len - 2] = L'\0';
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);
}
/* 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;
}
}
/* 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 &&
t->auth_mechanism == GIT_WINHTTP_AUTH_BASIC &&
apply_basic_credential(s->request, t->cred) < 0)
goto on_error;
else if (t->cred &&
t->cred->credtype == GIT_CREDTYPE_DEFAULT &&
t->auth_mechanism == GIT_WINHTTP_AUTH_NEGOTIATE &&
apply_default_credentials(s->request) < 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_basic_credential(s->request, 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;
}
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;
}
