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Merge pull request #2283 from phkelley/win32_fs

Browse Source 
Win32: UTF-8 <-> WCHAR conversion overhaul
This commit is contained in:
Vicent Marti 2014-04-23 07:13:49 -07:00
commit 5ca410b9a9
22 changed files with 1553 additions and 495 deletions
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43
src/path.c
View File

@ -9,6 +9,7 @@
#include "posix.h"
#ifdef GIT_WIN32
#include "win32/posix.h"
#include "win32/w32_util.h"
#else
#include <dirent.h>
#endif
@ -486,33 +487,33 @@ bool git_path_isfile(const char *path)
bool git_path_is_empty_dir(const char *path)
{
HANDLE hFind = INVALID_HANDLE_VALUE;
git_win32_path wbuf;
int wbufsz;
WIN32_FIND_DATAW ffd;
bool retval = true;
git_win32_path filter_w;
bool empty = false;
if (!git_path_isdir(path))
return false;
if (git_win32__findfirstfile_filter(filter_w, path)) {
WIN32_FIND_DATAW findData;
HANDLE hFind = FindFirstFileW(filter_w, &findData);
wbufsz = git_win32_path_from_c(wbuf, path);
if (!wbufsz || wbufsz + 2 > GIT_WIN_PATH_UTF16)
return false;
memcpy(&wbuf[wbufsz - 1], L"\\*", 3 * sizeof(wchar_t));
/* If the find handle was created successfully, then it's a directory */
if (hFind != INVALID_HANDLE_VALUE) {
empty = true;
hFind = FindFirstFileW(wbuf, &ffd);
if (INVALID_HANDLE_VALUE == hFind)
return false;
do {
/* Allow the enumeration to return . and .. and still be considered
* empty. In the special case of drive roots (i.e. C:\) where . and
* .. do not occur, we can still consider the path to be an empty
* directory if there's nothing there. */
if (!git_path_is_dot_or_dotdotW(findData.cFileName)) {
empty = false;
break;
}
} while (FindNextFileW(hFind, &findData));
do {
if (!git_path_is_dot_or_dotdotW(ffd.cFileName)) {
retval = false;
break;
FindClose(hFind);
}
} while (FindNextFileW(hFind, &ffd) != 0);
}
FindClose(hFind);
return retval;
return empty;
}
#else

10
src/repository.c
View File

@ -27,6 +27,10 @@
#include "merge.h"
#include "diff_driver.h"
#ifdef GIT_WIN32
# include "win32/w32_util.h"
#endif
#define GIT_FILE_CONTENT_PREFIX "gitdir:"
#define GIT_BRANCH_MASTER "master"
@ -1149,7 +1153,7 @@ static int repo_write_template(
#ifdef GIT_WIN32
if (!error && hidden) {
if (p_hide_directory__w32(path.ptr) < 0)
if (git_win32__sethidden(path.ptr) < 0)
error = -1;
}
#else
@ -1234,8 +1238,8 @@ static int repo_init_structure(
/* Hide the ".git" directory */
#ifdef GIT_WIN32
if ((opts->flags & GIT_REPOSITORY_INIT__HAS_DOTGIT) != 0) {
if (p_hide_directory__w32(repo_dir) < 0) {
giterr_set(GITERR_REPOSITORY,
if (git_win32__sethidden(repo_dir) < 0) {
giterr_set(GITERR_OS,
"Failed to mark Git repository folder as hidden");
return -1;
}

125
src/transports/winhttp.c
View File

@ -91,7 +91,7 @@ static int apply_basic_credential(HINTERNET request, git_cred *cred)
git_cred_userpass_plaintext *c = (git_cred_userpass_plaintext *)cred;
git_buf buf = GIT_BUF_INIT, raw = GIT_BUF_INIT;
wchar_t *wide = NULL;
int error = -1, wide_len = 0;
int error = -1, wide_len;
git_buf_printf(&raw, "%s:%s", c->username, c->password);
@ -100,21 +100,7 @@ static int apply_basic_credential(HINTERNET request, git_cred *cred)
git_buf_put_base64(&buf, git_buf_cstr(&raw), raw.size) < 0)
goto on_error;
wide_len = MultiByteToWideChar(CP_UTF8, MB_ERR_INVALID_CHARS,
git_buf_cstr(&buf), -1, NULL, 0);
if (!wide_len) {
giterr_set(GITERR_OS, "Failed to measure string for wide conversion");
goto on_error;
}
wide = git__malloc(wide_len * sizeof(wchar_t));
if (!wide)
goto on_error;
if (!MultiByteToWideChar(CP_UTF8, MB_ERR_INVALID_CHARS,
git_buf_cstr(&buf), -1, wide, wide_len)) {
if ((wide_len = git__utf8_to_16_alloc(&wide, git_buf_cstr(&buf))) < 0) {
giterr_set(GITERR_OS, "Failed to convert string to wide form");
goto on_error;
}
@ -171,23 +157,11 @@ static int fallback_cred_acquire_cb(
/* If the target URI supports integrated Windows authentication
* as an authentication mechanism */
if (GIT_CREDTYPE_DEFAULT & allowed_types) {
LPWSTR wide_url;
DWORD wide_len;
wchar_t *wide_url;
/* Convert URL to wide characters */
wide_len = MultiByteToWideChar(CP_UTF8, MB_ERR_INVALID_CHARS, url, -1, NULL, 0);
if (!wide_len) {
giterr_set(GITERR_OS, "Failed to measure string for wide conversion");
return -1;
}
wide_url = git__malloc(wide_len * sizeof(WCHAR));
GITERR_CHECK_ALLOC(wide_url);
if (!MultiByteToWideChar(CP_UTF8, MB_ERR_INVALID_CHARS, url, -1, wide_url, wide_len)) {
if (git__utf8_to_16_alloc(&wide_url, url) < 0) {
giterr_set(GITERR_OS, "Failed to convert string to wide form");
git__free(wide_url);
return -1;
}
@ -232,7 +206,7 @@ static int winhttp_stream_connect(winhttp_stream *s)
wchar_t ct[MAX_CONTENT_TYPE_LEN];
wchar_t *types[] = { L"*/*", NULL };
BOOL peerdist = FALSE;
int error = -1, wide_len;
int error = -1;
unsigned long disable_redirects = WINHTTP_DISABLE_REDIRECTS;
/* Prepare URL */
@ -242,21 +216,7 @@ static int winhttp_stream_connect(winhttp_stream *s)
return -1;
/* Convert URL to wide characters */
wide_len = MultiByteToWideChar(CP_UTF8, MB_ERR_INVALID_CHARS,
git_buf_cstr(&buf), -1, NULL, 0);
if (!wide_len) {
giterr_set(GITERR_OS, "Failed to measure string for wide conversion");
goto on_error;
}
s->request_uri = git__malloc(wide_len * sizeof(wchar_t));
if (!s->request_uri)
goto on_error;
if (!MultiByteToWideChar(CP_UTF8, MB_ERR_INVALID_CHARS,
git_buf_cstr(&buf), -1, s->request_uri, wide_len)) {
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;
}
@ -285,30 +245,17 @@ static int winhttp_stream_connect(winhttp_stream *s)
wchar_t *proxy_wide;
/* Convert URL to wide characters */
wide_len = MultiByteToWideChar(CP_UTF8, MB_ERR_INVALID_CHARS,
proxy_url, -1, NULL, 0);
int proxy_wide_len = git__utf8_to_16_alloc(&proxy_wide, proxy_url);
if (!wide_len) {
giterr_set(GITERR_OS, "Failed to measure string for wide conversion");
goto on_error;
}
proxy_wide = git__malloc(wide_len * sizeof(wchar_t));
if (!proxy_wide)
goto on_error;
if (!MultiByteToWideChar(CP_UTF8, MB_ERR_INVALID_CHARS,
proxy_url, -1, proxy_wide, wide_len)) {
if (proxy_wide_len < 0) {
giterr_set(GITERR_OS, "Failed to convert string to wide form");
git__free(proxy_wide);
goto on_error;
}
/* Strip any trailing forward slash on the proxy URL;
* WinHTTP doesn't like it if one is present */
if (wide_len > 1 && L'/' == proxy_wide[wide_len - 2])
proxy_wide[wide_len - 2] = L'\0';
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;
@ -359,7 +306,10 @@ static int winhttp_stream_connect(winhttp_stream *s)
s->service) < 0)
goto on_error;
git__utf8_to_16(ct, MAX_CONTENT_TYPE_LEN, git_buf_cstr(&buf));
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)) {
@ -373,7 +323,10 @@ static int winhttp_stream_connect(winhttp_stream *s)
s->service) < 0)
goto on_error;
git__utf8_to_16(ct, MAX_CONTENT_TYPE_LEN, git_buf_cstr(&buf));
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)) {
@ -506,16 +459,20 @@ static int winhttp_connect(
const char *url)
{
wchar_t *ua = L"git/1.0 (libgit2 " WIDEN(LIBGIT2_VERSION) L")";
git_win32_path host;
wchar_t *wide_host;
int32_t port;
const char *default_port = "80";
int error = -1;
/* Prepare port */
if (git__strtol32(&port, t->connection_data.port, NULL, 10) < 0)
return -1;
/* Prepare host */
git_win32_path_from_c(host, t->connection_data.host);
if (git__utf8_to_16_alloc(&wide_host, t->connection_data.host) < 0) {
giterr_set(GITERR_OS, "Unable to convert host to wide characters");
return -1;
}
/* Establish session */
t->session = WinHttpOpen(
@ -527,22 +484,27 @@ static int winhttp_connect(
if (!t->session) {
giterr_set(GITERR_OS, "Failed to init WinHTTP");
return -1;
goto on_error;
}
/* Establish connection */
t->connection = WinHttpConnect(
t->session,
host,
wide_host,
(INTERNET_PORT) port,
0);
if (!t->connection) {
giterr_set(GITERR_OS, "Failed to connect to host");
return -1;
goto on_error;
}
return 0;
error = 0;
on_error:
git__free(wide_host);
return error;
}
static int winhttp_stream_read(
@ -693,7 +655,6 @@ replay:
}
location = git__malloc(location_length);
location8 = git__malloc(location_length);
GITERR_CHECK_ALLOC(location);
if (!WinHttpQueryHeaders(s->request,
@ -706,7 +667,14 @@ replay:
git__free(location);
return -1;
}
git__utf16_to_8(location8, location_length, location);
/* 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 */
@ -716,8 +684,11 @@ replay:
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)
if (gitno_connection_data_from_url(&t->connection_data, location8, s->service_url) < 0) {
git__free(location8);
return -1;
}
winhttp_connect(t, location8);
}
@ -778,7 +749,11 @@ replay:
else
snprintf(expected_content_type_8, MAX_CONTENT_TYPE_LEN, "application/x-git-%s-advertisement", s->service);
git__utf8_to_16(expected_content_type, MAX_CONTENT_TYPE_LEN, expected_content_type_8);
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,

1
src/unix/posix.h
View File

@ -28,7 +28,6 @@ char *p_realpath(const char *, char *);
#define p_vsnprintf(b, c, f, a) vsnprintf(b, c, f, a)
#define p_snprintf(b, c, f, ...) snprintf(b, c, f, __VA_ARGS__)
#define p_mkstemp(p) mkstemp(p)
#define p_setenv(n,v,o) setenv(n,v,o)
#define p_inet_pton(a, b, c) inet_pton(a, b, c)
/* see win32/posix.h for explanation about why this exists */

9
src/util.h
View File

@ -22,6 +22,15 @@
#define GIT_DATE_RFC2822_SZ 32
/**
* Return the length of a constant string.
* We are aware that `strlen` performs the same task and is usually
* optimized away by the compiler, whilst being safer because it returns
* valid values when passed a pointer instead of a constant string; however
* this macro will transparently work with wide-char and single-char strings.
*/
#define CONST_STRLEN(x) ((sizeof(x)/sizeof(x[0])) - 1)
/*
* Custom memory allocation wrappers
* that set error code and error message

27
src/win32/dir.c
View File

@ -7,29 +7,13 @@
#define GIT__WIN32_NO_WRAP_DIR
#include "posix.h"
static int init_filter(char *filter, size_t n, const char *dir)
{
size_t len = strlen(dir);
if (len+3 >= n)
return 0;
strcpy(filter, dir);
if (len && dir[len-1] != '/')
strcat(filter, "/");
strcat(filter, "*");
return 1;
}
git__DIR *git__opendir(const char *dir)
{
git_win32_path_as_utf8 filter;
git_win32_path filter_w;
git__DIR *new = NULL;
size_t dirlen;
if (!dir || !init_filter(filter, sizeof(filter), dir))
if (!dir || !git_win32__findfirstfile_filter(filter_w, dir))
return NULL;
dirlen = strlen(dir);
@ -39,7 +23,6 @@ git__DIR *git__opendir(const char *dir)
return NULL;
memcpy(new->dir, dir, dirlen);
git_win32_path_from_c(filter_w, filter);
new->h = FindFirstFileW(filter_w, &new->f);
if (new->h == INVALID_HANDLE_VALUE) {
@ -72,10 +55,10 @@ int git__readdir_ext(
return -1;
}
if (wcslen(d->f.cFileName) >= sizeof(entry->d_name))
/* Convert the path to UTF-8 */
if (git_win32_path_to_utf8(entry->d_name, d->f.cFileName) < 0)
return -1;
git_win32_path_to_c(entry->d_name, d->f.cFileName);
entry->d_ino = 0;
*result = entry;
@ -96,7 +79,6 @@ struct git__dirent *git__readdir(git__DIR *d)
void git__rewinddir(git__DIR *d)
{
git_win32_path_as_utf8 filter;
git_win32_path filter_w;
if (!d)
@ -108,10 +90,9 @@ void git__rewinddir(git__DIR *d)
d->first = 0;
}
if (!init_filter(filter, sizeof(filter), d->dir))
if (!git_win32__findfirstfile_filter(filter_w, d->dir))
return;
git_win32_path_from_c(filter_w, filter);
d->h = FindFirstFileW(filter_w, &d->f);
if (d->h == INVALID_HANDLE_VALUE)

3
src/win32/dir.h
View File

@ -8,10 +8,11 @@
#define INCLUDE_dir_h__
#include "common.h"
#include "w32_util.h"
struct git__dirent {
int d_ino;
git_win32_path_as_utf8 d_name;
git_win32_utf8_path d_name;
};
typedef struct {

36
src/win32/error.c
View File

@ -7,21 +7,17 @@
#include "common.h"
#include "error.h"
#include "utf-conv.h"
#ifdef GIT_WINHTTP
# include <winhttp.h>
#endif
#ifndef WC_ERR_INVALID_CHARS
#define WC_ERR_INVALID_CHARS 0x80
#endif
char *git_win32_get_error_message(DWORD error_code)
{
LPWSTR lpMsgBuf = NULL;
HMODULE hModule = NULL;
char *utf8_msg = NULL;
int utf8_size;
DWORD dwFlags =
FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_IGNORE_INSERTS;
@ -45,33 +41,11 @@ char *git_win32_get_error_message(DWORD error_code)
if (FormatMessageW(dwFlags, hModule, error_code,
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
(LPWSTR)&lpMsgBuf, 0, NULL)) {
/* Convert the message to UTF-8. If this fails, we will
* return NULL, which is a condition expected by the caller */
if (git__utf16_to_8_alloc(&utf8_msg, lpMsgBuf) < 0)
utf8_msg = NULL;
/* Invalid code point check supported on Vista+ only */
if (git_has_win32_version(6, 0, 0))
dwFlags = WC_ERR_INVALID_CHARS;
else
dwFlags = 0;
utf8_size = WideCharToMultiByte(CP_UTF8, dwFlags,
lpMsgBuf, -1, NULL, 0, NULL, NULL);
if (!utf8_size) {
assert(0);
goto on_error;
}
utf8_msg = git__malloc(utf8_size);
if (!utf8_msg)
goto on_error;
if (!WideCharToMultiByte(CP_UTF8, dwFlags,
lpMsgBuf, -1, utf8_msg, utf8_size, NULL, NULL)) {
git__free(utf8_msg);
goto on_error;
}
on_error:
LocalFree(lpMsgBuf);
}

107
src/win32/findfile.c
View File

@ -17,56 +17,36 @@
#define REG_MSYSGIT_INSTALL L"SOFTWARE\\Wow6432Node\\Microsoft\\Windows\\CurrentVersion\\Uninstall\\Git_is1"
#endif
int git_win32__expand_path(struct git_win32__path *s_root, const wchar_t *templ)
typedef struct {
git_win32_path path;
DWORD len;
} _findfile_path;
static int git_win32__expand_path(_findfile_path *dest, const wchar_t *src)
{
s_root->len = ExpandEnvironmentStringsW(templ, s_root->path, MAX_PATH);
return s_root->len ? 0 : -1;
}
dest->len = ExpandEnvironmentStringsW(src, dest->path, ARRAY_SIZE(dest->path));
static int win32_path_to_8(git_buf *path_utf8, const wchar_t *path)
{
char temp_utf8[GIT_PATH_MAX];
git__utf16_to_8(temp_utf8, GIT_PATH_MAX, path);
git_path_mkposix(temp_utf8);
return git_buf_sets(path_utf8, temp_utf8);
}
int git_win32__find_file(
git_buf *path, const struct git_win32__path *root, const char *filename)
{
size_t len, alloc_len;
wchar_t *file_utf16 = NULL;
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 - root->len, filename);
/* check access */
if (_waccess(file_utf16, F_OK) < 0) {
git__free(file_utf16);
return GIT_ENOTFOUND;
}
win32_path_to_8(path, file_utf16);
git__free(file_utf16);
if (!dest->len || dest->len > ARRAY_SIZE(dest->path))
return -1;
return 0;
}
static int win32_path_to_8(git_buf *dest, const wchar_t *src)
{
git_win32_utf8_path utf8_path;
if (git_win32_path_to_utf8(utf8_path, src) < 0) {
giterr_set(GITERR_OS, "Unable to convert path to UTF-8");
return -1;
}
/* Convert backslashes to forward slashes */
git_path_mkposix(utf8_path);
return git_buf_sets(dest, utf8_path);
}
static wchar_t* win32_walkpath(wchar_t *path, wchar_t *buf, size_t buflen)
{
wchar_t term, *base = path;
@ -89,7 +69,7 @@ static wchar_t* win32_walkpath(wchar_t *path, wchar_t *buf, size_t buflen)
static int win32_find_git_in_path(git_buf *buf, const wchar_t *gitexe, const wchar_t *subdir)
{
wchar_t *env = _wgetenv(L"PATH"), lastch;
struct git_win32__path root;
_findfile_path root;
size_t gitexe_len = wcslen(gitexe);
if (!env)
@ -122,43 +102,44 @@ static int win32_find_git_in_path(git_buf *buf, const wchar_t *gitexe, const wch
}
static int win32_find_git_in_registry(
git_buf *buf, const HKEY hieve, const wchar_t *key, const wchar_t *subdir)
git_buf *buf, const HKEY hive, const wchar_t *key, const wchar_t *subdir)
{
HKEY hKey;
DWORD dwType = REG_SZ;
struct git_win32__path path16;
int error = GIT_ENOTFOUND;
assert(buf);
path16.len = MAX_PATH;
if (!RegOpenKeyExW(hive, key, 0, KEY_READ, &hKey)) {
DWORD dwType, cbData;
git_win32_path path;
if (RegOpenKeyExW(hieve, key, 0, KEY_READ, &hKey) == ERROR_SUCCESS) {
if (RegQueryValueExW(hKey, L"InstallLocation", NULL, &dwType,
(LPBYTE)&path16.path, &path16.len) == ERROR_SUCCESS)
{
/* InstallLocation points to the root of the git directory */
/* Ensure that the buffer is big enough to have the suffix attached
* after we receive the result. */
cbData = (DWORD)(sizeof(path) - wcslen(subdir) * sizeof(wchar_t));
if (path16.len + 4 > MAX_PATH) { /* 4 = wcslen(L"etc\\") */
giterr_set(GITERR_OS, "Cannot locate git - path too long");
return -1;
}
/* InstallLocation points to the root of the git directory */
if (!RegQueryValueExW(hKey, L"InstallLocation", NULL, &dwType, (LPBYTE)path, &cbData) &&
dwType == REG_SZ) {
wcscat(path16.path, subdir);
path16.len += 4;
/* Append the suffix */
wcscat(path, subdir);
win32_path_to_8(buf, path16.path);
/* Convert to UTF-8, with forward slashes, and output the path
* to the provided buffer */
if (!win32_path_to_8(buf, path))
error = 0;
}
RegCloseKey(hKey);
}
return path16.len ? 0 : GIT_ENOTFOUND;
return error;
}
static int win32_find_existing_dirs(
git_buf *out, const wchar_t *tmpl[])
{
struct git_win32__path path16;
_findfile_path path16;
git_buf buf = GIT_BUF_INIT;
git_buf_clear(out);

11
src/win32/findfile.h
View File

@ -8,17 +8,6 @@
#ifndef INCLUDE_git_findfile_h__
#define INCLUDE_git_findfile_h__
struct git_win32__path {
wchar_t path[MAX_PATH];
DWORD len;
};
extern int git_win32__expand_path(
struct git_win32__path *s_root, const wchar_t *templ);
extern int git_win32__find_file(
git_buf *path, const struct git_win32__path *root, const char *filename);
extern int git_win32__find_system_dirs(git_buf *out, const wchar_t *subpath);
extern int git_win32__find_global_dirs(git_buf *out);
extern int git_win32__find_xdg_dirs(git_buf *out);

2
src/win32/mingw-compat.h
View File

@ -11,7 +11,9 @@
/* use a 64-bit file offset type */
# define lseek _lseeki64
# undef stat
# define stat _stati64
# undef fstat
# define fstat _fstati64
/* stat: file mode type testing macros */

13
src/win32/posix.h
View File

@ -27,24 +27,15 @@ GIT_INLINE(int) p_link(const char *old, const char *new)
return -1;
}
GIT_INLINE(int) p_mkdir(const char *path, mode_t mode)
{
git_win32_path buf;
GIT_UNUSED(mode);
git_win32_path_from_c(buf, path);
return _wmkdir(buf);
}
extern int p_mkdir(const char *path, mode_t mode);
extern int p_unlink(const char *path);
extern int p_lstat(const char *file_name, struct stat *buf);
extern int p_readlink(const char *link, char *target, size_t target_len);
extern int p_readlink(const char *path, char *buf, size_t bufsiz);
extern int p_symlink(const char *old, const char *new);
extern int p_hide_directory__w32(const char *path);
extern char *p_realpath(const char *orig_path, char *buffer);
extern int p_vsnprintf(char *buffer, size_t count, const char *format, va_list argptr);
extern int p_snprintf(char *buffer, size_t count, const char *format, ...) GIT_FORMAT_PRINTF(3, 4);
extern int p_mkstemp(char *tmp_path);
extern int p_setenv(const char* name, const char* value, int overwrite);
extern int p_stat(const char* path, struct stat* buf);
extern int p_chdir(const char* path);
extern int p_chmod(const char* path, mode_t mode);

542
src/win32/posix_w32.c
View File

@ -9,17 +9,65 @@
#include "path.h"
#include "utf-conv.h"
#include "repository.h"
#include "reparse.h"
#include <errno.h>
#include <io.h>
#include <fcntl.h>
#include <ws2tcpip.h>
#ifndef FILE_NAME_NORMALIZED
# define FILE_NAME_NORMALIZED 0
#endif
/* GetFinalPathNameByHandleW signature */
typedef DWORD(WINAPI *PFGetFinalPathNameByHandleW)(HANDLE, LPWSTR, DWORD, DWORD);
/* Helper function which converts UTF-8 paths to UTF-16.
* On failure, errno is set. */
static int utf8_to_16_with_errno(git_win32_path dest, const char *src)
{
int len = git_win32_path_from_utf8(dest, src);
if (len < 0) {
if (GetLastError() == ERROR_INSUFFICIENT_BUFFER)
errno = ENAMETOOLONG;
else
errno = EINVAL; /* Bad code point, presumably */
}
return len;
}
int p_mkdir(const char *path, mode_t mode)
{
git_win32_path buf;
GIT_UNUSED(mode);
if (utf8_to_16_with_errno(buf, path) < 0)
return -1;
return _wmkdir(buf);
}
int p_unlink(const char *path)
{
git_win32_path buf;
git_win32_path_from_c(buf, path);
_wchmod(buf, 0666);
return _wunlink(buf);
int error;
if (utf8_to_16_with_errno(buf, path) < 0)
return -1;
error = _wunlink(buf);
/* If the file could not be deleted because it was
* read-only, clear the bit and try again */
if (error == -1 && errno == EACCES) {
_wchmod(buf, 0666);
error = _wunlink(buf);
}
return error;
}
int p_fsync(int fd)
@ -53,28 +101,79 @@ GIT_INLINE(time_t) filetime_to_time_t(const FILETIME *ft)
return (time_t)winTime;
}
#define WIN32_IS_WSEP(CH) ((CH) == L'/' || (CH) == L'\\')
static int do_lstat(
const char *file_name, struct stat *buf, int posix_enotdir)
/* On success, returns the length, in characters, of the path stored in dest.
* On failure, returns a negative value. */
static int readlink_w(
git_win32_path dest,
const git_win32_path path)
{
WIN32_FILE_ATTRIBUTE_DATA fdata;
git_win32_path fbuf;
wchar_t lastch;
int flen;
BYTE buf[MAXIMUM_REPARSE_DATA_BUFFER_SIZE];
GIT_REPARSE_DATA_BUFFER *reparse_buf = (GIT_REPARSE_DATA_BUFFER *)buf;
HANDLE handle = NULL;
DWORD ioctl_ret;
wchar_t *target;
size_t target_len;
flen = git_win32_path_from_c(fbuf, file_name);
int error = -1;
/* 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;
handle = CreateFileW(path, GENERIC_READ,
FILE_SHARE_READ | FILE_SHARE_DELETE, NULL, OPEN_EXISTING,
FILE_FLAG_OPEN_REPARSE_POINT | FILE_FLAG_BACKUP_SEMANTICS, NULL);
if (handle == INVALID_HANDLE_VALUE) {
errno = ENOENT;
return -1;
}
if (GetFileAttributesExW(fbuf, GetFileExInfoStandard, &fdata)) {
if (!DeviceIoControl(handle, FSCTL_GET_REPARSE_POINT, NULL, 0,
reparse_buf, sizeof(buf), &ioctl_ret, NULL)) {
errno = EINVAL;
goto on_error;
}
switch (reparse_buf->ReparseTag) {
case IO_REPARSE_TAG_SYMLINK:
target = reparse_buf->SymbolicLinkReparseBuffer.PathBuffer +
(reparse_buf->SymbolicLinkReparseBuffer.SubstituteNameOffset / sizeof(WCHAR));
target_len = reparse_buf->SymbolicLinkReparseBuffer.SubstituteNameLength / sizeof(WCHAR);
break;
case IO_REPARSE_TAG_MOUNT_POINT:
target = reparse_buf->MountPointReparseBuffer.PathBuffer +
(reparse_buf->MountPointReparseBuffer.SubstituteNameOffset / sizeof(WCHAR));
target_len = reparse_buf->MountPointReparseBuffer.SubstituteNameLength / sizeof(WCHAR);
break;
default:
errno = EINVAL;
goto on_error;
}
if (target_len) {
/* The path may need to have a prefix removed. */
target_len = git_win32__canonicalize_path(target, target_len);
/* Need one additional character in the target buffer
* for the terminating NULL. */
if (GIT_WIN_PATH_UTF16 > target_len) {
wcscpy(dest, target);
error = (int)target_len;
}
}
on_error:
CloseHandle(handle);
return error;
}
#define WIN32_IS_WSEP(CH) ((CH) == L'/' || (CH) == L'\\')
static int lstat_w(
wchar_t *path,
struct stat *buf,
bool posix_enotdir)
{
WIN32_FILE_ATTRIBUTE_DATA fdata;
if (GetFileAttributesExW(path, GetFileExInfoStandard, &fdata)) {
int fMode = S_IREAD;
if (!buf)
@ -88,12 +187,6 @@ static int do_lstat(
if (!(fdata.dwFileAttributes & FILE_ATTRIBUTE_READONLY))
fMode |= S_IWRITE;
if (fdata.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT)
fMode |= S_IFLNK;
if ((fMode & (S_IFDIR | S_IFLNK)) == (S_IFDIR | S_IFLNK)) // junction
fMode ^= S_IFLNK;
buf->st_ino = 0;
buf->st_gid = 0;
buf->st_uid = 0;
@ -105,19 +198,17 @@ static int do_lstat(
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)) {
git_win32_path_as_utf8 target;
int readlink_result;
if (fdata.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) {
git_win32_path target;
readlink_result = p_readlink(file_name, target, sizeof(target));
if (readlink_w(target, path) >= 0) {
buf->st_mode = (buf->st_mode & ~S_IFMT) | S_IFLNK;
if (readlink_result == -1)
return -1;
buf->st_size = strlen(target);
/* st_size gets the UTF-8 length of the target name, in bytes,
* not counting the NULL terminator */
if ((buf->st_size = git__utf16_to_8(NULL, 0, target)) < 0)
return -1;
}
}
return 0;
@ -129,18 +220,23 @@ static int do_lstat(
* file path is a regular file, otherwise set ENOENT.
*/
if (posix_enotdir) {
size_t path_len = wcslen(path);
/* 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);
DWORD attrs;
if (flen <= 0)
/* remove last directory component */
for (path_len--; path_len > 0 && !WIN32_IS_WSEP(path[path_len]); path_len--);
if (path_len <= 0)
break;
fbuf[flen] = L'\0';
path[path_len] = L'\0';
attrs = GetFileAttributesW(path);
if (GetFileAttributesExW(fbuf, GetFileExInfoStandard, &fdata)) {
if (!(fdata.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY))
if (attrs != INVALID_FILE_ATTRIBUTES) {
if (!(attrs & FILE_ATTRIBUTE_DIRECTORY))
errno = ENOTDIR;
break;
}
@ -150,108 +246,51 @@ static int do_lstat(
return -1;
}
static int do_lstat(const char *path, struct stat *buf, bool posixly_correct)
{
git_win32_path path_w;
int len;
if ((len = utf8_to_16_with_errno(path_w, path)) < 0)
return -1;
git_win32__path_trim_end(path_w, len);
return lstat_w(path_w, buf, posixly_correct);
}
int p_lstat(const char *filename, struct stat *buf)
{
return do_lstat(filename, buf, 0);
return do_lstat(filename, buf, false);
}
int p_lstat_posixly(const char *filename, struct stat *buf)
{
return do_lstat(filename, buf, 1);
return do_lstat(filename, buf, true);
}
/*
* Parts of the The p_readlink function are heavily inspired by the php
* readlink function in link_win32.c
*
* Copyright (c) 1999 - 2012 The PHP Group. All rights reserved.
*
* For details of the PHP license see http://www.php.net/license/3_01.txt
*/
int p_readlink(const char *link, char *target, size_t target_len)
int p_readlink(const char *path, char *buf, size_t bufsiz)
{
typedef DWORD (WINAPI *fpath_func)(HANDLE, LPWSTR, DWORD, DWORD);
static fpath_func pGetFinalPath = NULL;
HANDLE hFile;
DWORD dwRet;
git_win32_path link_w;
wchar_t* target_w;
int error = 0;
git_win32_path path_w, target_w;
git_win32_utf8_path target;
int len;
assert(link && target && target_len > 0);
/* readlink(2) does not NULL-terminate the string written
* to the target buffer. Furthermore, the target buffer need
* not be large enough to hold the entire result. A truncated
* result should be written in this case. Since this truncation
* could occur in the middle of the encoding of a code point,
* we need to buffer the result on the stack. */
/*
* 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_win32_path_from_c(link_w, 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);
if (utf8_to_16_with_errno(path_w, path) < 0 ||
readlink_w(target_w, path_w) < 0 ||
(len = git_win32_path_to_utf8(target, target_w)) < 0)
return -1;
}
target_w = (wchar_t*)git__malloc(target_len * sizeof(wchar_t));
GITERR_CHECK_ALLOC(target_w);
bufsiz = min((size_t)len, bufsiz);
memcpy(buf, target, bufsiz);
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;
return (int)bufsiz;
}
int p_symlink(const char *old, const char *new)
@ -267,7 +306,8 @@ int p_open(const char *path, int flags, ...)
git_win32_path buf;
mode_t mode = 0;
git_win32_path_from_c(buf, path);
if (utf8_to_16_with_errno(buf, path) < 0)
return -1;
if (flags & O_CREAT) {
va_list arg_list;
@ -283,125 +323,211 @@ int p_open(const char *path, int flags, ...)
int p_creat(const char *path, mode_t mode)
{
git_win32_path buf;
git_win32_path_from_c(buf, path);
if (utf8_to_16_with_errno(buf, path) < 0)
return -1;
return _wopen(buf, _O_WRONLY | _O_CREAT | _O_TRUNC | _O_BINARY, mode);
}
int p_getcwd(char *buffer_out, size_t size)
{
int ret;
wchar_t *buf;
git_win32_path buf;
wchar_t *cwd = _wgetcwd(buf, GIT_WIN_PATH_UTF16);
if ((size_t)((int)size) != size)
if (!cwd)
return -1;
buf = (wchar_t*)git__malloc(sizeof(wchar_t) * (int)size);
GITERR_CHECK_ALLOC(buf);
/* Convert the working directory back to UTF-8 */
if (git__utf16_to_8(buffer_out, size, cwd) < 0) {
DWORD code = GetLastError();
_wgetcwd(buf, (int)size);
if (code == ERROR_INSUFFICIENT_BUFFER)
errno = ERANGE;
else
errno = EINVAL;
ret = WideCharToMultiByte(
CP_UTF8, 0, buf, -1, buffer_out, (int)size, NULL, NULL);
return -1;
}
git__free(buf);
return !ret ? -1 : 0;
return 0;
}
/*
* Returns the address of the GetFinalPathNameByHandleW function.
* This function is available on Windows Vista and higher.
*/
static PFGetFinalPathNameByHandleW get_fpnbyhandle(void)
{
static PFGetFinalPathNameByHandleW pFunc = NULL;
PFGetFinalPathNameByHandleW toReturn = pFunc;
if (!toReturn) {
HMODULE hModule = GetModuleHandleW(L"kernel32");
if (hModule)
toReturn = (PFGetFinalPathNameByHandleW)GetProcAddress(hModule, "GetFinalPathNameByHandleW");
pFunc = toReturn;
}
assert(toReturn);
return toReturn;
}
static int getfinalpath_w(
git_win32_path dest,
const wchar_t *path)
{
PFGetFinalPathNameByHandleW pgfp = get_fpnbyhandle();
HANDLE hFile;
DWORD dwChars;
if (!pgfp)
return -1;
/* Use FILE_FLAG_BACKUP_SEMANTICS so we can open a directory. Do not
* specify FILE_FLAG_OPEN_REPARSE_POINT; we want to open a handle to the
* target of the link. */
hFile = CreateFileW(path, GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_DELETE,
NULL, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, NULL);
if (INVALID_HANDLE_VALUE == hFile)
return -1;
/* Call GetFinalPathNameByHandle */
dwChars = pgfp(hFile, dest, GIT_WIN_PATH_UTF16, FILE_NAME_NORMALIZED);
CloseHandle(hFile);
if (!dwChars || dwChars >= GIT_WIN_PATH_UTF16)
return -1;
/* The path may be delivered to us with a prefix; canonicalize */
return (int)git_win32__canonicalize_path(dest, dwChars);
}
static int follow_and_lstat_link(git_win32_path path, struct stat* buf)
{
git_win32_path target_w;
if (getfinalpath_w(target_w, path) < 0)
return -1;
return lstat_w(target_w, buf, false);
}
int p_stat(const char* path, struct stat* buf)
{
git_win32_path_as_utf8 target;
int error = 0;
git_win32_path path_w;
int len;
error = do_lstat(path, buf, 0);
if ((len = utf8_to_16_with_errno(path_w, path)) < 0)
return -1;
/* We need not do this in a loop to unwind chains of symlinks since
* p_readlink calls GetFinalPathNameByHandle which does it for us. */
if (error >= 0 && S_ISLNK(buf->st_mode) &&
(error = p_readlink(path, target, sizeof(target))) >= 0)
error = do_lstat(target, buf, 0);
git_win32__path_trim_end(path_w, len);
return error;
if (lstat_w(path_w, buf, false) < 0)
return -1;
/* The item is a symbolic link or mount point. No need to iterate
* to follow multiple links; use GetFinalPathNameFromHandle. */
if (S_ISLNK(buf->st_mode))
return follow_and_lstat_link(path_w, buf);
return 0;
}
int p_chdir(const char* path)
{
git_win32_path buf;
git_win32_path_from_c(buf, path);
if (utf8_to_16_with_errno(buf, path) < 0)
return -1;
return _wchdir(buf);
}
int p_chmod(const char* path, mode_t mode)
{
git_win32_path buf;
git_win32_path_from_c(buf, path);
if (utf8_to_16_with_errno(buf, path) < 0)
return -1;
return _wchmod(buf, mode);
}
int p_rmdir(const char* path)
{
int error;
git_win32_path buf;
git_win32_path_from_c(buf, path);
int error;
if (utf8_to_16_with_errno(buf, path) < 0)
return -1;
error = _wrmdir(buf);
/* _wrmdir() is documented to return EACCES if "A program has an open
* handle to the directory." This sounds like what everybody else calls
* EBUSY. Let's convert appropriate error codes.
*/
if (GetLastError() == ERROR_SHARING_VIOLATION)
errno = EBUSY;
if (error == -1) {
switch (GetLastError()) {
/* _wrmdir() is documented to return EACCES if "A program has an open
* handle to the directory." This sounds like what everybody else calls
* EBUSY. Let's convert appropriate error codes.
*/
case ERROR_SHARING_VIOLATION:
errno = EBUSY;
break;
/* This error can be returned when trying to rmdir an extant file. */
case ERROR_DIRECTORY:
errno = ENOTDIR;
break;
}
}
return error;
}
int p_hide_directory__w32(const char *path)
{
git_win32_path buf;
git_win32_path_from_c(buf, path);
return (SetFileAttributesW(buf, FILE_ATTRIBUTE_HIDDEN) != 0) ? 0 : -1;
}
char *p_realpath(const char *orig_path, char *buffer)
{
int ret;
git_win32_path orig_path_w;
git_win32_path buffer_w;
git_win32_path orig_path_w, buffer_w;
git_win32_path_from_c(orig_path_w, orig_path);
if (utf8_to_16_with_errno(orig_path_w, orig_path) < 0)
return NULL;
/* Implicitly use GetCurrentDirectory which can be a threading issue */
ret = GetFullPathNameW(orig_path_w, GIT_WIN_PATH_UTF16, buffer_w, NULL);
/* Note that if the path provided is a relative path, then the current directory
* is used to resolve the path -- which is a concurrency issue because the current
* directory is a process-wide variable. */
if (!GetFullPathNameW(orig_path_w, GIT_WIN_PATH_UTF16, buffer_w, NULL)) {
if (GetLastError() == ERROR_INSUFFICIENT_BUFFER)
errno = ENAMETOOLONG;
else
errno = EINVAL;
/* According to MSDN, a return value equals to zero means a failure. */
if (ret == 0 || ret > GIT_WIN_PATH_UTF16)
buffer = NULL;
return NULL;
}
else if (GetFileAttributesW(buffer_w) == INVALID_FILE_ATTRIBUTES) {
buffer = NULL;
/* The path must exist. */
if (GetFileAttributesW(buffer_w) == INVALID_FILE_ATTRIBUTES) {
errno = ENOENT;
return NULL;
}
else if (buffer == NULL) {
int buffer_sz = WideCharToMultiByte(
CP_UTF8, 0, buffer_w, -1, NULL, 0, NULL, NULL);
if (!buffer_sz ||
!(buffer = (char *)git__malloc(buffer_sz)) ||
!WideCharToMultiByte(
CP_UTF8, 0, buffer_w, -1, buffer, buffer_sz, NULL, NULL))
{
git__free(buffer);
buffer = NULL;
}
/* Convert the path to UTF-8. */
if (buffer) {
/* If the caller provided a buffer, then it is assumed to be GIT_WIN_PATH_UTF8
* characters in size. If it isn't, then we may overflow. */
if (git__utf16_to_8(buffer, GIT_WIN_PATH_UTF8, buffer_w) < 0)
return NULL;
} else {
/* If the caller did not provide a buffer, then we allocate one for the caller
* from the heap. */
if (git__utf16_to_8_alloc(&buffer, buffer_w) < 0)
return NULL;
}
else if (!WideCharToMultiByte(
CP_UTF8, 0, buffer_w, -1, buffer, GIT_PATH_MAX, NULL, NULL))
buffer = NULL;
if (buffer)
git_path_mkposix(buffer);
/* Convert backslashes to forward slashes */
git_path_mkposix(buffer);
return buffer;
}
@ -433,8 +559,6 @@ int p_snprintf(char *buffer, size_t count, const char *format, ...)
return r;
}
extern int p_creat(const char *path, mode_t mode);
int p_mkstemp(char *tmp_path)
{
#if defined(_MSC_VER)
@ -448,18 +572,13 @@ int p_mkstemp(char *tmp_path)
return p_creat(tmp_path, 0744); //-V536
}
int p_setenv(const char* name, const char* value, int overwrite)
{
if (overwrite != 1)
return -1;
return (SetEnvironmentVariableA(name, value) == 0 ? -1 : 0);
}
int p_access(const char* path, mode_t mode)
{
git_win32_path buf;
git_win32_path_from_c(buf, path);
if (utf8_to_16_with_errno(buf, path) < 0)
return -1;
return _waccess(buf, mode);
}
@ -471,8 +590,9 @@ int p_rename(const char *from, const char *to)
int rename_succeeded;
int error;
git_win32_path_from_c(wfrom, from);
git_win32_path_from_c(wto, to);
if (utf8_to_16_with_errno(wfrom, from) < 0 ||
utf8_to_16_with_errno(wto, to) < 0)
return -1;
/* wait up to 50ms if file is locked by another thread or process */
rename_tries = 0;

57
src/win32/reparse.h Normal file
View File

@ -0,0 +1,57 @@
/*
* Copyright (C) the libgit2 contributors. All rights reserved.
*
* This file is part of libgit2, distributed under the GNU GPL v2 with
* a Linking Exception. For full terms see the included COPYING file.
*/
#ifndef INCLUDE_git_win32_reparse_h__
#define INCLUDE_git_win32_reparse_h__
/* This structure is defined on MSDN at
* http://msdn.microsoft.com/en-us/library/windows/hardware/ff552012(v=vs.85).aspx
*
* It was formerly included in the Windows 2000 SDK and remains defined in
* MinGW, so we must define it with a silly name to avoid conflicting.
*/
typedef struct _GIT_REPARSE_DATA_BUFFER {
ULONG ReparseTag;
USHORT ReparseDataLength;
USHORT Reserved;
union {
struct {
USHORT SubstituteNameOffset;
USHORT SubstituteNameLength;
USHORT PrintNameOffset;
USHORT PrintNameLength;
ULONG Flags;
WCHAR PathBuffer[1];
} SymbolicLinkReparseBuffer;
struct {
USHORT SubstituteNameOffset;
USHORT SubstituteNameLength;
USHORT PrintNameOffset;
USHORT PrintNameLength;
WCHAR PathBuffer[1];
} MountPointReparseBuffer;
struct {
UCHAR DataBuffer[1];
} GenericReparseBuffer;
};
} GIT_REPARSE_DATA_BUFFER;
#define REPARSE_DATA_HEADER_SIZE 8
#define REPARSE_DATA_MOUNTPOINT_HEADER_SIZE 8
#define REPARSE_DATA_UNION_SIZE 12
/* Missing in MinGW */
#ifndef FSCTL_GET_REPARSE_POINT
# define FSCTL_GET_REPARSE_POINT 0x000900a8
#endif
/* Missing in MinGW */
#ifndef FSCTL_SET_REPARSE_POINT
# define FSCTL_SET_REPARSE_POINT 0x000900a4
#endif
#endif

125
src/win32/utf-conv.c
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@ -8,12 +8,131 @@
#include "common.h"
#include "utf-conv.h"
int git__utf8_to_16(wchar_t * dest, size_t dest_size, const char *src)
#ifndef WC_ERR_INVALID_CHARS
# define WC_ERR_INVALID_CHARS 0x80
#endif
GIT_INLINE(DWORD) get_wc_flags(void)
{
return MultiByteToWideChar(CP_UTF8, 0, src, -1, dest, (int)dest_size);
static char inited = 0;
static DWORD flags;
/* Invalid code point check supported on Vista+ only */
if (!inited) {
flags = git_has_win32_version(6, 0, 0) ? WC_ERR_INVALID_CHARS : 0;
inited = 1;
}
return flags;
}
/**
* Converts a UTF-8 string to wide characters.
*
* @param dest The buffer to receive the wide string.
* @param dest_size The size of the buffer, in characters.
* @param src The UTF-8 string to convert.
* @return The length of the wide string, in characters (not counting the NULL terminator), or < 0 for failure
*/
int git__utf8_to_16(wchar_t *dest, size_t dest_size, const char *src)
{
/* Length of -1 indicates NULL termination of the input string. Subtract 1 from the result to
* turn 0 into -1 (an error code) and to not count the NULL terminator as part of the string's
* length. MultiByteToWideChar never returns int's minvalue, so underflow is not possible */
return MultiByteToWideChar(CP_UTF8, MB_ERR_INVALID_CHARS, src, -1, dest, (int)dest_size) - 1;
}
/**
* Converts a wide string to UTF-8.
*
* @param dest The buffer to receive the UTF-8 string.
* @param dest_size The size of the buffer, in bytes.
* @param src The wide string to convert.
* @return The length of the UTF-8 string, in bytes (not counting the NULL terminator), or < 0 for failure
*/
int git__utf16_to_8(char *dest, size_t dest_size, const wchar_t *src)
{
return WideCharToMultiByte(CP_UTF8, 0, src, -1, dest, (int)dest_size, NULL, NULL);
/* Length of -1 indicates NULL termination of the input string. Subtract 1 from the result to
* turn 0 into -1 (an error code) and to not count the NULL terminator as part of the string's
* length. WideCharToMultiByte never returns int's minvalue, so underflow is not possible */
return WideCharToMultiByte(CP_UTF8, get_wc_flags(), src, -1, dest, (int)dest_size, NULL, NULL) - 1;
}
/**
* Converts a UTF-8 string to wide characters.
* Memory is allocated to hold the converted string.
* The caller is responsible for freeing the string with git__free.
*
* @param dest Receives a pointer to the wide string.
* @param src The UTF-8 string to convert.
* @return The length of the wide string, in characters (not counting the NULL terminator), or < 0 for failure
*/
int git__utf8_to_16_alloc(wchar_t **dest, const char *src)
{
int utf16_size;
*dest = NULL;
/* Length of -1 indicates NULL termination of the input string */
utf16_size = MultiByteToWideChar(CP_UTF8, MB_ERR_INVALID_CHARS, src, -1, NULL, 0);
if (!utf16_size)
return -1;
*dest = git__malloc(utf16_size * sizeof(wchar_t));
if (!*dest)
return -1;
utf16_size = MultiByteToWideChar(CP_UTF8, MB_ERR_INVALID_CHARS, src, -1, *dest, utf16_size);
if (!utf16_size) {
git__free(*dest);
*dest = NULL;
}
/* Subtract 1 from the result to turn 0 into -1 (an error code) and to not count the NULL
* terminator as part of the string's length. MultiByteToWideChar never returns int's minvalue,
* so underflow is not possible */
return utf16_size - 1;
}
/**
* Converts a wide string to UTF-8.
* Memory is allocated to hold the converted string.
* The caller is responsible for freeing the string with git__free.
*
* @param dest Receives a pointer to the UTF-8 string.
* @param src The wide string to convert.
* @return The length of the UTF-8 string, in bytes (not counting the NULL terminator), or < 0 for failure
*/
int git__utf16_to_8_alloc(char **dest, const wchar_t *src)
{
int utf8_size;
DWORD dwFlags = get_wc_flags();
*dest = NULL;
/* Length of -1 indicates NULL termination of the input string */
utf8_size = WideCharToMultiByte(CP_UTF8, dwFlags, src, -1, NULL, 0, NULL, NULL);
if (!utf8_size)
return -1;
*dest = git__malloc(utf8_size);
if (!*dest)
return -1;
utf8_size = WideCharToMultiByte(CP_UTF8, dwFlags, src, -1, *dest, utf8_size, NULL, NULL);
if (!utf8_size) {
git__free(*dest);
*dest = NULL;
}
/* Subtract 1 from the result to turn 0 into -1 (an error code) and to not count the NULL
* terminator as part of the string's length. MultiByteToWideChar never returns int's minvalue,
* so underflow is not possible */
return utf8_size - 1;
}

76
src/win32/utf-conv.h
View File

@ -10,27 +10,83 @@
#include <wchar.h>
#include "common.h"
/* Maximum characters in a Windows path plus one for NUL byte */
#define GIT_WIN_PATH_UTF16 (260 + 1)
/* Equal to the Win32 MAX_PATH constant. The maximum path length is 259
* characters plus a NULL terminator. */
#define GIT_WIN_PATH_UTF16 260
/* Maximum bytes necessary to convert a full-length UTF16 path to UTF8 */
#define GIT_WIN_PATH_UTF8 (260 * 4 + 1)
/* Maximum size of a UTF-8 Win32 path. UTF-8 does have 4-byte sequences,
* but they are encoded in UTF-16 using surrogate pairs, which takes up
* the space of two characters. Two characters in the range U+0800 ->
* U+FFFF take up more space in UTF-8 (6 bytes) than one surrogate pair
* (4 bytes). */
#define GIT_WIN_PATH_UTF8 (259 * 3 + 1)
/* Win32 path types */
typedef wchar_t git_win32_path[GIT_WIN_PATH_UTF16];
typedef char git_win32_utf8_path[GIT_WIN_PATH_UTF8];
typedef char git_win32_path_as_utf8[GIT_WIN_PATH_UTF8];
/**
* Converts a UTF-8 string to wide characters.
*
* @param dest The buffer to receive the wide string.
* @param dest_size The size of the buffer, in characters.
* @param src The UTF-8 string to convert.
* @return The length of the wide string, in characters (not counting the NULL terminator), or < 0 for failure
*/
int git__utf8_to_16(wchar_t *dest, size_t dest_size, const char *src);
/* dest_size is the size of dest in wchar_t's */
int git__utf8_to_16(wchar_t * dest, size_t dest_size, const char *src);
/* dest_size is the size of dest in char's */
/**
* Converts a wide string to UTF-8.
*
* @param dest The buffer to receive the UTF-8 string.
* @param dest_size The size of the buffer, in bytes.
* @param src The wide string to convert.
* @return The length of the UTF-8 string, in bytes (not counting the NULL terminator), or < 0 for failure
*/
int git__utf16_to_8(char *dest, size_t dest_size, const wchar_t *src);
GIT_INLINE(int) git_win32_path_from_c(git_win32_path dest, const char *src)
/**
* Converts a UTF-8 string to wide characters.
* Memory is allocated to hold the converted string.
* The caller is responsible for freeing the string with git__free.
*
* @param dest Receives a pointer to the wide string.
* @param src The UTF-8 string to convert.
* @return The length of the wide string, in characters (not counting the NULL terminator), or < 0 for failure
*/
int git__utf8_to_16_alloc(wchar_t **dest, const char *src);
/**
* Converts a wide string to UTF-8.
* Memory is allocated to hold the converted string.
* The caller is responsible for freeing the string with git__free.
*
* @param dest Receives a pointer to the UTF-8 string.
* @param src The wide string to convert.
* @return The length of the UTF-8 string, in bytes (not counting the NULL terminator), or < 0 for failure
*/
int git__utf16_to_8_alloc(char **dest, const wchar_t *src);
/**
* Converts a UTF-8 Win32 path to wide characters.
*
* @param dest The buffer to receive the wide string.
* @param src The UTF-8 string to convert.
* @return The length of the wide string, in characters (not counting the NULL terminator), or < 0 for failure
*/
GIT_INLINE(int) git_win32_path_from_utf8(git_win32_path dest, const char *src)
{
return git__utf8_to_16(dest, GIT_WIN_PATH_UTF16, src);
}
GIT_INLINE(int) git_win32_path_to_c(git_win32_path_as_utf8 dest, const wchar_t *src)
/**
* Converts a wide Win32 path to UTF-8.
*
* @param dest The buffer to receive the UTF-8 string.
* @param src The wide string to convert.
* @return The length of the UTF-8 string, in bytes (not counting the NULL terminator), or < 0 for failure
*/
GIT_INLINE(int) git_win32_path_to_utf8(git_win32_utf8_path dest, const wchar_t *src)
{
return git__utf16_to_8(dest, GIT_WIN_PATH_UTF8, src);
}

139
src/win32/w32_util.c Normal file
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@ -0,0 +1,139 @@
/*
* Copyright (C) the libgit2 contributors. All rights reserved.
*
* This file is part of libgit2, distributed under the GNU GPL v2 with
* a Linking Exception. For full terms see the included COPYING file.
*/
#include "w32_util.h"
/**
* Creates a FindFirstFile(Ex) filter string from a UTF-8 path.
* The filter string enumerates all items in the directory.
*
* @param dest The buffer to receive the filter string.
* @param src The UTF-8 path of the directory to enumerate.
* @return True if the filter string was created successfully; false otherwise
*/
bool git_win32__findfirstfile_filter(git_win32_path dest, const char *src)
{
static const wchar_t suffix[] = L"\\*";
int len = git_win32_path_from_utf8(dest, src);
/* Ensure the path was converted */
if (len < 0)
return false;
/* Ensure that the path does not end with a trailing slash,
* because we're about to add one. Don't rely our trim_end
* helper, because we want to remove the backslash even for
* drive letter paths, in this case. */
if (len > 0 &&
(dest[len - 1] == L'/' || dest[len - 1] == L'\\')) {
dest[len - 1] = L'\0';
len--;
}
/* Ensure we have enough room to add the suffix */
if ((size_t)len >= GIT_WIN_PATH_UTF16 - CONST_STRLEN(suffix))
return false;
wcscat(dest, suffix);
return true;
}
/**
* Ensures the given path (file or folder) has the +H (hidden) attribute set.
*
* @param path The path which should receive the +H bit.
* @return 0 on success; -1 on failure
*/
int git_win32__sethidden(const char *path)
{
git_win32_path buf;
DWORD attrs;
if (git_win32_path_from_utf8(buf, path) < 0)
return -1;
attrs = GetFileAttributesW(buf);
/* Ensure the path exists */
if (attrs == INVALID_FILE_ATTRIBUTES)
return -1;
/* If the item isn't already +H, add the bit */
if ((attrs & FILE_ATTRIBUTE_HIDDEN) == 0 &&
!SetFileAttributesW(buf, attrs | FILE_ATTRIBUTE_HIDDEN))
return -1;
return 0;
}
/**
* Removes any trailing backslashes from a path, except in the case of a drive
* letter path (C:\, D:\, etc.). This function cannot fail.
*
* @param path The path which should be trimmed.
* @return The length of the modified string (<= the input length)
*/
size_t git_win32__path_trim_end(wchar_t *str, size_t len)
{
while (1) {
if (!len || str[len - 1] != L'\\')
break;
/* Don't trim backslashes from drive letter paths, which
* are 3 characters long and of the form C:\, D:\, etc. */
if (len == 3 && git_win32__isalpha(str[0]) && str[1] == ':')
break;
len--;
}
str[len] = L'\0';
return len;
}
/**
* Removes any of the following namespace prefixes from a path,
* if found: "\??\", "\\?\", "\\?\UNC\". This function cannot fail.
*
* @param path The path which should be converted.
* @return The length of the modified string (<= the input length)
*/
size_t git_win32__canonicalize_path(wchar_t *str, size_t len)
{
static const wchar_t dosdevices_prefix[] = L"\\\?\?\\";
static const wchar_t nt_prefix[] = L"\\\\?\\";
static const wchar_t unc_prefix[] = L"UNC\\";
size_t to_advance = 0;
/* "\??\" -- DOS Devices prefix */
if (len >= CONST_STRLEN(dosdevices_prefix) &&
!wcsncmp(str, dosdevices_prefix, CONST_STRLEN(dosdevices_prefix))) {
to_advance += CONST_STRLEN(dosdevices_prefix);
len -= CONST_STRLEN(dosdevices_prefix);
}
/* "\\?\" -- NT namespace prefix */
else if (len >= CONST_STRLEN(nt_prefix) &&
!wcsncmp(str, nt_prefix, CONST_STRLEN(nt_prefix))) {
to_advance += CONST_STRLEN(nt_prefix);
len -= CONST_STRLEN(nt_prefix);
}
/* "\??\UNC\", "\\?\UNC\" -- UNC prefix */
if (to_advance && len >= CONST_STRLEN(unc_prefix) &&
!wcsncmp(str + to_advance, unc_prefix, CONST_STRLEN(unc_prefix))) {
to_advance += CONST_STRLEN(unc_prefix);
len -= CONST_STRLEN(unc_prefix);
}
if (to_advance) {
memmove(str, str + to_advance, len * sizeof(wchar_t));
str[len] = L'\0';
}
return git_win32__path_trim_end(str, len);
}

54
src/win32/w32_util.h Normal file
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@ -0,0 +1,54 @@
/*
* Copyright (C) the libgit2 contributors. All rights reserved.
*
* This file is part of libgit2, distributed under the GNU GPL v2 with
* a Linking Exception. For full terms see the included COPYING file.
*/
#ifndef INCLUDE_w32_util_h__
#define INCLUDE_w32_util_h__
#include "utf-conv.h"
GIT_INLINE(bool) git_win32__isalpha(wchar_t c)
{
return ((c >= L'A' && c <= L'Z') || (c >= L'a' && c <= L'z'));
}
/**
* Creates a FindFirstFile(Ex) filter string from a UTF-8 path.
* The filter string enumerates all items in the directory.
*
* @param dest The buffer to receive the filter string.
* @param src The UTF-8 path of the directory to enumerate.
* @return True if the filter string was created successfully; false otherwise
*/
bool git_win32__findfirstfile_filter(git_win32_path dest, const char *src);
/**
* Ensures the given path (file or folder) has the +H (hidden) attribute set.
*
* @param path The path which should receive the +H bit.
* @return 0 on success; -1 on failure
*/
int git_win32__sethidden(const char *path);
/**
* Removes any trailing backslashes from a path, except in the case of a drive
* letter path (C:\, D:\, etc.). This function cannot fail.
*
* @param path The path which should be trimmed.
* @return The length of the modified string (<= the input length)
*/
size_t git_win32__path_trim_end(wchar_t *str, size_t len);
/**
* Removes any of the following namespace prefixes from a path,
* if found: "\??\", "\\?\", "\\?\UNC\". This function cannot fail.
*
* @param path The path which should be converted.
* @return The length of the modified string (<= the input length)
*/
size_t git_win32__canonicalize_path(wchar_t *str, size_t len);
#endif

53
tests/clar_libgit2.c
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@ -59,47 +59,40 @@ void cl_git_rewritefile(const char *path, const char *content)
char *cl_getenv(const char *name)
{
git_win32_path name_utf16;
DWORD alloc_len;
wchar_t *value_utf16;
char *value_utf8;
wchar_t *wide_name, *wide_value;
char *utf8_value = NULL;
DWORD value_len;
git_win32_path_from_c(name_utf16, name);
alloc_len = GetEnvironmentVariableW(name_utf16, NULL, 0);
if (alloc_len <= 0)
return NULL;
cl_assert(git__utf8_to_16_alloc(&wide_name, name) >= 0);
cl_assert(value_utf16 = git__calloc(alloc_len, sizeof(wchar_t)));
value_len = GetEnvironmentVariableW(wide_name, NULL, 0);
GetEnvironmentVariableW(name_utf16, value_utf16, alloc_len);
if (value_len) {
cl_assert(wide_value = git__malloc(value_len * sizeof(wchar_t)));
cl_assert(GetEnvironmentVariableW(wide_name, wide_value, value_len));
cl_assert(git__utf16_to_8_alloc(&utf8_value, wide_value) >= 0);
git__free(wide_value);
}
alloc_len = alloc_len * 4 + 1; /* worst case UTF16->UTF8 growth */
cl_assert(value_utf8 = git__calloc(alloc_len, 1));
git__utf16_to_8(value_utf8, alloc_len, value_utf16);
git__free(value_utf16);
return value_utf8;
git__free(wide_name);
return utf8_value;
}
int cl_setenv(const char *name, const char *value)
{
git_win32_path name_utf16;
git_win32_path value_utf16;
wchar_t *wide_name, *wide_value;
git_win32_path_from_c(name_utf16, name);
cl_assert(git__utf8_to_16_alloc(&wide_name, name) >= 0);
if (value) {
git_win32_path_from_c(value_utf16, value);
cl_assert(SetEnvironmentVariableW(name_utf16, value_utf16));
cl_assert(git__utf8_to_16_alloc(&wide_value, value) >= 0);
cl_assert(SetEnvironmentVariableW(wide_name, wide_value));
} 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);
* lpName does not exist in the environment block. This behavior
* seems to have changed in later versions. Don't check the return value
* of SetEnvironmentVariable when passing NULL for lpValue. */
SetEnvironmentVariableW(wide_name, NULL);
}
return 0;
@ -115,8 +108,8 @@ int cl_rename(const char *source, const char *dest)
git_win32_path dest_utf16;
unsigned retries = 1;
git_win32_path_from_c(source_utf16, source);
git_win32_path_from_c(dest_utf16, dest);
cl_assert(git_win32_path_from_utf8(source_utf16, source) >= 0);
cl_assert(git_win32_path_from_utf8(dest_utf16, dest) >= 0);
while (!MoveFileW(source_utf16, dest_utf16)) {
/* Only retry if the error is ERROR_ACCESS_DENIED;

11
tests/clar_libgit2.h
View File

@ -29,6 +29,17 @@
#define cl_git_fail_with(expr, error) cl_assert_equal_i(error,expr)
/**
* Like cl_git_pass, only for Win32 error code conventions
*/
#define cl_win32_pass(expr) do { \
int _win32_res; \
if ((_win32_res = (expr)) == 0) { \
giterr_set(GITERR_OS, "Returned: %d, system error code: %d", _win32_res, GetLastError()); \
cl_git_report_failure(_win32_res, __FILE__, __LINE__, "System call failed: " #expr); \
} \
} while(0)
void cl_git_report_failure(int, const char *, int, const char *);
#define cl_assert_at_line(expr,file,line) \

2
tests/core/env.c
View File

@ -21,7 +21,7 @@ static char *home_values[] = {
"f\xc4\x80ke_\xc4\xa4ome", /* latin extended */
"f\xce\xb1\xce\xba\xce\xb5_h\xce\xbfm\xce\xad", /* having fun with greek */
"fa\xe0" "\xb8" "\x87" "e_\xe0" "\xb8" "\x99" "ome", /* thai characters */
"f\xe1\x9cx80ke_\xe1\x9c\x91ome", /* tagalog characters */
"f\xe1\x9c\x80ke_\xe1\x9c\x91ome", /* tagalog characters */
"\xe1\xb8\x9f\xe1\xba\xa2" "ke_ho" "\xe1" "\xb9" "\x81" "e", /* latin extended additional */
"\xf0\x9f\x98\x98\xf0\x9f\x98\x82", /* emoticons */
NULL

602
tests/core/link.c Normal file
View File

@ -0,0 +1,602 @@
#include "clar_libgit2.h"
#include "posix.h"
#include "buffer.h"
#include "path.h"
#ifdef GIT_WIN32
# include "win32/reparse.h"
#endif
void test_core_link__cleanup(void)
{
#ifdef GIT_WIN32
RemoveDirectory("lstat_junction");
RemoveDirectory("lstat_dangling");
RemoveDirectory("lstat_dangling_dir");
RemoveDirectory("lstat_dangling_junction");
RemoveDirectory("stat_junction");
RemoveDirectory("stat_dangling");
RemoveDirectory("stat_dangling_dir");
RemoveDirectory("stat_dangling_junction");
#endif
}
#ifdef GIT_WIN32
static bool is_administrator(void)
{
static SID_IDENTIFIER_AUTHORITY authority = { SECURITY_NT_AUTHORITY };
PSID admin_sid;
BOOL is_admin;
cl_win32_pass(AllocateAndInitializeSid(&authority, 2, SECURITY_BUILTIN_DOMAIN_RID, DOMAIN_ALIAS_RID_ADMINS, 0, 0, 0, 0, 0, 0, &admin_sid));
cl_win32_pass(CheckTokenMembership(NULL, admin_sid, &is_admin));
FreeSid(admin_sid);
return is_admin ? true : false;
}
#endif
static void do_symlink(const char *old, const char *new, int is_dir)
{
#ifndef GIT_WIN32
GIT_UNUSED(is_dir);
cl_must_pass(symlink(old, new));
#else
typedef DWORD (WINAPI *create_symlink_func)(LPCTSTR, LPCTSTR, DWORD);
HMODULE module;
create_symlink_func pCreateSymbolicLink;
if (!is_administrator())
clar__skip();
cl_assert(module = GetModuleHandle("kernel32"));
cl_assert(pCreateSymbolicLink = (create_symlink_func)GetProcAddress(module, "CreateSymbolicLinkA"));
cl_win32_pass(pCreateSymbolicLink(new, old, is_dir));
#endif
}
static void do_hardlink(const char *old, const char *new)
{
#ifndef GIT_WIN32
cl_must_pass(link(old, new));
#else
typedef DWORD (WINAPI *create_hardlink_func)(LPCTSTR, LPCTSTR, LPSECURITY_ATTRIBUTES);
HMODULE module;
create_hardlink_func pCreateHardLink;
if (!is_administrator())
clar__skip();
cl_assert(module = GetModuleHandle("kernel32"));
cl_assert(pCreateHardLink = (create_hardlink_func)GetProcAddress(module, "CreateHardLinkA"));
cl_win32_pass(pCreateHardLink(new, old, 0));
#endif
}
#ifdef GIT_WIN32
static void do_junction(const char *old, const char *new)
{
GIT_REPARSE_DATA_BUFFER *reparse_buf;
HANDLE handle;
git_buf unparsed_buf = GIT_BUF_INIT;
wchar_t *subst_utf16, *print_utf16;
DWORD ioctl_ret;
int subst_utf16_len, subst_byte_len, print_utf16_len, print_byte_len, ret;
USHORT reparse_buflen;
size_t i;
/* Junction targets must be the unparsed name, starting with \??\, using
* backslashes instead of forward, and end in a trailing backslash.
* eg: \??\C:\Foo\
*/
git_buf_puts(&unparsed_buf, "\\??\\");
for (i = 0; i < strlen(old); i++)
git_buf_putc(&unparsed_buf, old[i] == '/' ? '\\' : old[i]);
git_buf_putc(&unparsed_buf, '\\');
subst_utf16_len = git__utf8_to_16(NULL, 0, git_buf_cstr(&unparsed_buf));
subst_byte_len = subst_utf16_len * sizeof(WCHAR);
print_utf16_len = subst_utf16_len - 4;
print_byte_len = subst_byte_len - (4 * sizeof(WCHAR));
/* The junction must be an empty directory before the junction attribute
* can be added.
*/
cl_win32_pass(CreateDirectoryA(new, NULL));
handle = CreateFileA(new, GENERIC_WRITE, 0, NULL, OPEN_EXISTING,
FILE_FLAG_OPEN_REPARSE_POINT | FILE_FLAG_BACKUP_SEMANTICS, NULL);
cl_win32_pass(handle != INVALID_HANDLE_VALUE);
reparse_buflen = (USHORT)(REPARSE_DATA_HEADER_SIZE +
REPARSE_DATA_MOUNTPOINT_HEADER_SIZE +
subst_byte_len + sizeof(WCHAR) +
print_byte_len + sizeof(WCHAR));
reparse_buf = LocalAlloc(LMEM_FIXED|LMEM_ZEROINIT, reparse_buflen);
cl_assert(reparse_buf);
subst_utf16 = reparse_buf->MountPointReparseBuffer.PathBuffer;
print_utf16 = subst_utf16 + subst_utf16_len + 1;
ret = git__utf8_to_16(subst_utf16, subst_utf16_len + 1,
git_buf_cstr(&unparsed_buf));
cl_assert_equal_i(subst_utf16_len, ret);
ret = git__utf8_to_16(print_utf16,
print_utf16_len + 1, git_buf_cstr(&unparsed_buf) + 4);
cl_assert_equal_i(print_utf16_len, ret);
reparse_buf->ReparseTag = IO_REPARSE_TAG_MOUNT_POINT;
reparse_buf->MountPointReparseBuffer.SubstituteNameOffset = 0;
reparse_buf->MountPointReparseBuffer.SubstituteNameLength = subst_byte_len;
reparse_buf->MountPointReparseBuffer.PrintNameOffset = (USHORT)(subst_byte_len + sizeof(WCHAR));
reparse_buf->MountPointReparseBuffer.PrintNameLength = print_byte_len;
reparse_buf->ReparseDataLength = reparse_buflen - REPARSE_DATA_HEADER_SIZE;
cl_win32_pass(DeviceIoControl(handle, FSCTL_SET_REPARSE_POINT,
reparse_buf, reparse_buflen, NULL, 0, &ioctl_ret, NULL));
CloseHandle(handle);
LocalFree(reparse_buf);
}
static void do_custom_reparse(const char *path)
{
REPARSE_GUID_DATA_BUFFER *reparse_buf;
HANDLE handle;
DWORD ioctl_ret;
const char *reparse_data = "Reparse points are silly.";
size_t reparse_buflen = REPARSE_GUID_DATA_BUFFER_HEADER_SIZE +
strlen(reparse_data) + 1;
reparse_buf = LocalAlloc(LMEM_FIXED|LMEM_ZEROINIT, reparse_buflen);
cl_assert(reparse_buf);
reparse_buf->ReparseTag = 42;
reparse_buf->ReparseDataLength = (WORD)(strlen(reparse_data) + 1);
reparse_buf->ReparseGuid.Data1 = 0xdeadbeef;
reparse_buf->ReparseGuid.Data2 = 0xdead;
reparse_buf->ReparseGuid.Data3 = 0xbeef;
reparse_buf->ReparseGuid.Data4[0] = 42;
reparse_buf->ReparseGuid.Data4[1] = 42;
reparse_buf->ReparseGuid.Data4[2] = 42;
reparse_buf->ReparseGuid.Data4[3] = 42;
reparse_buf->ReparseGuid.Data4[4] = 42;
reparse_buf->ReparseGuid.Data4[5] = 42;
reparse_buf->ReparseGuid.Data4[6] = 42;
reparse_buf->ReparseGuid.Data4[7] = 42;
reparse_buf->ReparseGuid.Data4[8] = 42;
memcpy(reparse_buf->GenericReparseBuffer.DataBuffer,
reparse_data, strlen(reparse_data) + 1);
handle = CreateFileA(path, GENERIC_WRITE, 0, NULL, OPEN_EXISTING,
FILE_FLAG_OPEN_REPARSE_POINT | FILE_FLAG_BACKUP_SEMANTICS, NULL);
cl_win32_pass(handle != INVALID_HANDLE_VALUE);
cl_win32_pass(DeviceIoControl(handle, FSCTL_SET_REPARSE_POINT,
reparse_buf,
reparse_buf->ReparseDataLength + REPARSE_GUID_DATA_BUFFER_HEADER_SIZE,
NULL, 0, &ioctl_ret, NULL));
CloseHandle(handle);
LocalFree(reparse_buf);
}
#endif
git_buf *unslashify(git_buf *buf)
{
#ifdef GIT_WIN32
size_t i;
for (i = 0; i < buf->size; i++)
if (buf->ptr[i] == '/')
buf->ptr[i] = '\\';
#endif
return buf;
}
void test_core_link__stat_regular_file(void)
{
struct stat st;
cl_git_rewritefile("stat_regfile", "This is a regular file!\n");
cl_must_pass(p_stat("stat_regfile", &st));
cl_assert(S_ISREG(st.st_mode));
cl_assert_equal_i(24, st.st_size);
}
void test_core_link__lstat_regular_file(void)
{
struct stat st;
cl_git_rewritefile("lstat_regfile", "This is a regular file!\n");
cl_must_pass(p_stat("lstat_regfile", &st));
cl_assert(S_ISREG(st.st_mode));
cl_assert_equal_i(24, st.st_size);
}
void test_core_link__stat_symlink(void)
{
struct stat st;
cl_git_rewritefile("stat_target", "This is the target of a symbolic link.\n");
do_symlink("stat_target", "stat_symlink", 0);
cl_must_pass(p_stat("stat_target", &st));
cl_assert(S_ISREG(st.st_mode));
cl_assert_equal_i(39, st.st_size);
cl_must_pass(p_stat("stat_symlink", &st));
cl_assert(S_ISREG(st.st_mode));
cl_assert_equal_i(39, st.st_size);
}
void test_core_link__stat_symlink_directory(void)
{
struct stat st;
p_mkdir("stat_dirtarget", 0777);
do_symlink("stat_dirtarget", "stat_dirlink", 1);
cl_must_pass(p_stat("stat_dirtarget", &st));
cl_assert(S_ISDIR(st.st_mode));
cl_must_pass(p_stat("stat_dirlink", &st));
cl_assert(S_ISDIR(st.st_mode));
}
void test_core_link__stat_symlink_chain(void)
{
struct stat st;
cl_git_rewritefile("stat_final_target", "Final target of some symbolic links...\n");
do_symlink("stat_final_target", "stat_chain_3", 0);
do_symlink("stat_chain_3", "stat_chain_2", 0);
do_symlink("stat_chain_2", "stat_chain_1", 0);
cl_must_pass(p_stat("stat_chain_1", &st));
cl_assert(S_ISREG(st.st_mode));
cl_assert_equal_i(39, st.st_size);
}
void test_core_link__stat_dangling_symlink(void)
{
struct stat st;
do_symlink("stat_nonexistent", "stat_dangling", 0);
cl_must_fail(p_stat("stat_nonexistent", &st));
cl_must_fail(p_stat("stat_dangling", &st));
}
void test_core_link__stat_dangling_symlink_directory(void)
{
struct stat st;
do_symlink("stat_nonexistent", "stat_dangling_dir", 1);
cl_must_fail(p_stat("stat_nonexistent_dir", &st));
cl_must_fail(p_stat("stat_dangling", &st));
}
void test_core_link__lstat_symlink(void)
{
git_buf target_path = GIT_BUF_INIT;
struct stat st;
/* Windows always writes the canonical path as the link target, so
* write the full path on all platforms.
*/
git_buf_join(&target_path, '/', clar_sandbox_path(), "lstat_target");
cl_git_rewritefile("lstat_target", "This is the target of a symbolic link.\n");
do_symlink(git_buf_cstr(&target_path), "lstat_symlink", 0);
cl_must_pass(p_lstat("lstat_target", &st));
cl_assert(S_ISREG(st.st_mode));
cl_assert_equal_i(39, st.st_size);
cl_must_pass(p_lstat("lstat_symlink", &st));
cl_assert(S_ISLNK(st.st_mode));
cl_assert_equal_i(git_buf_len(&target_path), st.st_size);
git_buf_free(&target_path);
}
void test_core_link__lstat_symlink_directory(void)
{
git_buf target_path = GIT_BUF_INIT;
struct stat st;
git_buf_join(&target_path, '/', clar_sandbox_path(), "lstat_dirtarget");
p_mkdir("lstat_dirtarget", 0777);
do_symlink(git_buf_cstr(&target_path), "lstat_dirlink", 1);
cl_must_pass(p_lstat("lstat_dirtarget", &st));
cl_assert(S_ISDIR(st.st_mode));
cl_must_pass(p_lstat("lstat_dirlink", &st));
cl_assert(S_ISLNK(st.st_mode));
cl_assert_equal_i(git_buf_len(&target_path), st.st_size);
git_buf_free(&target_path);
}
void test_core_link__lstat_dangling_symlink(void)
{
struct stat st;
do_symlink("lstat_nonexistent", "lstat_dangling", 0);
cl_must_fail(p_lstat("lstat_nonexistent", &st));
cl_must_pass(p_lstat("lstat_dangling", &st));
cl_assert(S_ISLNK(st.st_mode));
cl_assert_equal_i(strlen("lstat_nonexistent"), st.st_size);
}
void test_core_link__lstat_dangling_symlink_directory(void)
{
struct stat st;
do_symlink("lstat_nonexistent", "lstat_dangling_dir", 1);
cl_must_fail(p_lstat("lstat_nonexistent", &st));
cl_must_pass(p_lstat("lstat_dangling_dir", &st));
cl_assert(S_ISLNK(st.st_mode));
cl_assert_equal_i(strlen("lstat_nonexistent"), st.st_size);
}
void test_core_link__stat_junction(void)
{
#ifdef GIT_WIN32
git_buf target_path = GIT_BUF_INIT;
struct stat st;
git_buf_join(&target_path, '/', clar_sandbox_path(), "stat_junctarget");
p_mkdir("stat_junctarget", 0777);
do_junction(git_buf_cstr(&target_path), "stat_junction");
cl_must_pass(p_stat("stat_junctarget", &st));
cl_assert(S_ISDIR(st.st_mode));
cl_must_pass(p_stat("stat_junction", &st));
cl_assert(S_ISDIR(st.st_mode));
git_buf_free(&target_path);
#endif
}
void test_core_link__stat_dangling_junction(void)
{
#ifdef GIT_WIN32
git_buf target_path = GIT_BUF_INIT;
struct stat st;
git_buf_join(&target_path, '/', clar_sandbox_path(), "stat_nonexistent_junctarget");
p_mkdir("stat_nonexistent_junctarget", 0777);
do_junction(git_buf_cstr(&target_path), "stat_dangling_junction");
RemoveDirectory("stat_nonexistent_junctarget");
cl_must_fail(p_stat("stat_nonexistent_junctarget", &st));
cl_must_fail(p_stat("stat_dangling_junction", &st));
git_buf_free(&target_path);
#endif
}
void test_core_link__lstat_junction(void)
{
#ifdef GIT_WIN32
git_buf target_path = GIT_BUF_INIT;
struct stat st;
git_buf_join(&target_path, '/', clar_sandbox_path(), "lstat_junctarget");
p_mkdir("lstat_junctarget", 0777);
do_junction(git_buf_cstr(&target_path), "lstat_junction");
cl_must_pass(p_lstat("lstat_junctarget", &st));
cl_assert(S_ISDIR(st.st_mode));
cl_must_pass(p_lstat("lstat_junction", &st));
cl_assert(S_ISLNK(st.st_mode));
git_buf_free(&target_path);
#endif
}
void test_core_link__lstat_dangling_junction(void)
{
#ifdef GIT_WIN32
git_buf target_path = GIT_BUF_INIT;
struct stat st;
git_buf_join(&target_path, '/', clar_sandbox_path(), "lstat_nonexistent_junctarget");
p_mkdir("lstat_nonexistent_junctarget", 0777);
do_junction(git_buf_cstr(&target_path), "lstat_dangling_junction");
RemoveDirectory("lstat_nonexistent_junctarget");
cl_must_fail(p_lstat("lstat_nonexistent_junctarget", &st));
cl_must_pass(p_lstat("lstat_dangling_junction", &st));
cl_assert(S_ISLNK(st.st_mode));
cl_assert_equal_i(git_buf_len(&target_path), st.st_size);
git_buf_free(&target_path);
#endif
}
void test_core_link__stat_hardlink(void)
{
struct stat st;
cl_git_rewritefile("stat_hardlink1", "This file has many names!\n");
do_hardlink("stat_hardlink1", "stat_hardlink2");
cl_must_pass(p_stat("stat_hardlink1", &st));
cl_assert(S_ISREG(st.st_mode));
cl_assert_equal_i(26, st.st_size);
cl_must_pass(p_stat("stat_hardlink2", &st));
cl_assert(S_ISREG(st.st_mode));
cl_assert_equal_i(26, st.st_size);
}
void test_core_link__lstat_hardlink(void)
{
struct stat st;
cl_git_rewritefile("lstat_hardlink1", "This file has many names!\n");
do_hardlink("lstat_hardlink1", "lstat_hardlink2");
cl_must_pass(p_lstat("lstat_hardlink1", &st));
cl_assert(S_ISREG(st.st_mode));
cl_assert_equal_i(26, st.st_size);
cl_must_pass(p_lstat("lstat_hardlink2", &st));
cl_assert(S_ISREG(st.st_mode));
cl_assert_equal_i(26, st.st_size);
}
void test_core_link__stat_reparse_point(void)
{
#ifdef GIT_WIN32
struct stat st;
/* Generic reparse points should be treated as regular files, only
* symlinks and junctions should be treated as links.
*/
cl_git_rewritefile("stat_reparse", "This is a reparse point!\n");
do_custom_reparse("stat_reparse");
cl_must_pass(p_lstat("stat_reparse", &st));
cl_assert(S_ISREG(st.st_mode));
cl_assert_equal_i(25, st.st_size);
#endif
}
void test_core_link__lstat_reparse_point(void)
{
#ifdef GIT_WIN32
struct stat st;
cl_git_rewritefile("lstat_reparse", "This is a reparse point!\n");
do_custom_reparse("lstat_reparse");
cl_must_pass(p_lstat("lstat_reparse", &st));
cl_assert(S_ISREG(st.st_mode));
cl_assert_equal_i(25, st.st_size);
#endif
}
void test_core_link__readlink_nonexistent_file(void)
{
char buf[2048];
cl_must_fail(p_readlink("readlink_nonexistent", buf, 2048));
cl_assert_equal_i(ENOENT, errno);
}
void test_core_link__readlink_normal_file(void)
{
char buf[2048];
cl_git_rewritefile("readlink_regfile", "This is a regular file!\n");
cl_must_fail(p_readlink("readlink_regfile", buf, 2048));
cl_assert_equal_i(EINVAL, errno);
}
void test_core_link__readlink_symlink(void)
{
git_buf target_path = GIT_BUF_INIT;
int len;
char buf[2048];
git_buf_join(&target_path, '/', clar_sandbox_path(), "readlink_target");
cl_git_rewritefile("readlink_target", "This is the target of a symlink\n");
do_symlink(git_buf_cstr(&target_path), "readlink_link", 0);
len = p_readlink("readlink_link", buf, 2048);
cl_must_pass(len);
buf[len] = 0;
cl_assert_equal_s(git_buf_cstr(unslashify(&target_path)), buf);
git_buf_free(&target_path);
}
void test_core_link__readlink_dangling(void)
{
git_buf target_path = GIT_BUF_INIT;
int len;
char buf[2048];
git_buf_join(&target_path, '/', clar_sandbox_path(), "readlink_nonexistent");
do_symlink(git_buf_cstr(&target_path), "readlink_dangling", 0);
len = p_readlink("readlink_dangling", buf, 2048);
cl_must_pass(len);
buf[len] = 0;
cl_assert_equal_s(git_buf_cstr(unslashify(&target_path)), buf);
git_buf_free(&target_path);
}
void test_core_link__readlink_multiple(void)
{
git_buf target_path = GIT_BUF_INIT,
path3 = GIT_BUF_INIT, path2 = GIT_BUF_INIT, path1 = GIT_BUF_INIT;
int len;
char buf[2048];
git_buf_join(&target_path, '/', clar_sandbox_path(), "readlink_final");
git_buf_join(&path3, '/', clar_sandbox_path(), "readlink_3");
git_buf_join(&path2, '/', clar_sandbox_path(), "readlink_2");
git_buf_join(&path1, '/', clar_sandbox_path(), "readlink_1");
do_symlink(git_buf_cstr(&target_path), git_buf_cstr(&path3), 0);
do_symlink(git_buf_cstr(&path3), git_buf_cstr(&path2), 0);
do_symlink(git_buf_cstr(&path2), git_buf_cstr(&path1), 0);
len = p_readlink("readlink_1", buf, 2048);
cl_must_pass(len);
buf[len] = 0;
cl_assert_equal_s(git_buf_cstr(unslashify(&path2)), buf);
git_buf_free(&path1);
git_buf_free(&path2);
git_buf_free(&path3);
git_buf_free(&target_path);
}