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- use php_sys_readlink

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This commit is contained in:
Pierre Joye
2010-09-10 19:25:56 +00:00
parent e0591d0ea1
commit dd902c7161
1 changed files with 6 additions and 57 deletions
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63
ext/standard/link_win32.c
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@@ -44,7 +44,7 @@
/*
TODO:
- Create php_readlink, php_link and php_symlink in win32/link.c
- Create php_readlink (done), php_link and php_symlink in win32/link.c
- Expose them (PHPAPI) so extensions developers can use them
- define link/readlink/symlink to their php_ equivalent and use them in ext/standart/link.c
- this file is then useless and we have a portable link API
@@ -62,73 +62,22 @@ TODO:
Return the target of a symbolic link */
PHP_FUNCTION(readlink)
{
HINSTANCE kernel32;
char *link;
int link_len;
TCHAR Path[MAXPATHLEN];
char path_resolved[MAXPATHLEN];
HANDLE hFile;
DWORD dwRet;
typedef BOOL (WINAPI *gfpnh_func)(HANDLE, LPTSTR, DWORD, DWORD);
gfpnh_func pGetFinalPathNameByHandle;
kernel32 = LoadLibrary("kernel32.dll");
if (kernel32) {
pGetFinalPathNameByHandle = (gfpnh_func)GetProcAddress(kernel32, "GetFinalPathNameByHandleA");
if (pGetFinalPathNameByHandle == NULL) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Can't call GetFinalPathNameByHandleA");
RETURN_FALSE;
}
} else {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Can't call get a handle on kernel32.dll");
RETURN_FALSE;
}
char target[MAXPATHLEN];
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s", &link, &link_len) == FAILURE) {
return;
}
if (php_check_open_basedir(link TSRMLS_CC)) {
RETURN_FALSE;
}
if (!expand_filepath(link, path_resolved TSRMLS_CC)) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "No such file or directory");
RETURN_FALSE;
}
hFile = CreateFile(path_resolved, // 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) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Could not open file (error %d)", GetLastError());
RETURN_FALSE;
}
dwRet = pGetFinalPathNameByHandle(hFile, Path, MAXPATHLEN, VOLUME_NAME_DOS);
if(dwRet >= MAXPATHLEN) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Can't resolve the full path, the path exceeds the MAX_PATH_LEN (%d) limit", MAXPATHLEN);
if (OPENBASEDIR_CHECKPATH(link)) {
RETURN_FALSE;
}
CloseHandle(hFile);
/* Append NULL to the end of the string */
Path[dwRet] = '\0';
if(dwRet > 4) {
/* Skip first 4 characters if they are "\??\" */
if(Path[0] == '\\' && Path[1] == '\\' && Path[2] == '?' && Path[3] == '\\') {
RETURN_STRING(Path + 4, 1);
}
} else {
RETURN_STRING(Path, 1);
if (php_sys_readlink(link, target, MAXPATHLEN) == -1) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "readlink failed to read the symbolic link (%s), error %d)", link, GetLastError());
}
RETURN_STRING(target, 1);
}
/* }}} */