diff options
Diffstat (limited to 'TSRM/tsrm_virtual_cwd.c')
| -rw-r--r-- | TSRM/tsrm_virtual_cwd.c | 143 |
1 files changed, 133 insertions, 10 deletions
diff --git a/TSRM/tsrm_virtual_cwd.c b/TSRM/tsrm_virtual_cwd.c index 41cd1ff754..060da8ec4a 100644 --- a/TSRM/tsrm_virtual_cwd.c +++ b/TSRM/tsrm_virtual_cwd.c @@ -137,6 +137,42 @@ static int php_check_dots(const char *element, int n) #ifdef TSRM_WIN32 +#ifdef CTL_CODE +#undef CTL_CODE +#endif +#define CTL_CODE(DeviceType,Function,Method,Access) (((DeviceType) << 16) | ((Access) << 14) | ((Function) << 2) | (Method)) +#define FILE_DEVICE_FILE_SYSTEM 0x00000009 +#define METHOD_BUFFERED 0 +#define FILE_ANY_ACCESS 0 +#define FSCTL_GET_REPARSE_POINT CTL_CODE(FILE_DEVICE_FILE_SYSTEM, 42, METHOD_BUFFERED, FILE_ANY_ACCESS) +#define MAXIMUM_REPARSE_DATA_BUFFER_SIZE ( 16 * 1024 ) + +typedef struct { + unsigned long ReparseTag; + unsigned short ReparseDataLength; + unsigned short Reserved; + union { + struct { + unsigned short SubstituteNameOffset; + unsigned short SubstituteNameLength; + unsigned short PrintNameOffset; + unsigned short PrintNameLength; + unsigned long Flags; + wchar_t ReparseTarget[1]; + } SymbolicLinkReparseBuffer; + struct { + unsigned short SubstituteNameOffset; + unsigned short SubstituteNameLength; + unsigned short PrintNameOffset; + unsigned short PrintNameLength; + wchar_t ReparseTarget[1]; + } MountPointReparseBuffer; + struct { + unsigned char ReparseTarget[1]; + } GenericReparseBuffer; + }; +} REPARSE_DATA_BUFFER; + #define SECS_BETWEEN_EPOCHS (__int64)11644473600 #define SECS_TO_100NS (__int64)10000000 static inline time_t FileTimeToUnixTime(const FILETIME FileTime) @@ -530,7 +566,8 @@ static int tsrm_realpath_r(char *path, int start, int len, int *ll, time_t *t, i #endif realpath_cache_bucket *bucket; char *tmp; - TSRM_ALLOCA_FLAG(use_heap); + TSRM_ALLOCA_FLAG(use_heap) + TSRM_ALLOCA_FLAG(use_heap_large) while (1) { if (len <= start) { @@ -606,7 +643,7 @@ static int tsrm_realpath_r(char *path, int start, int len, int *ll, time_t *t, i memcpy(path, bucket->realpath, bucket->realpath_len + 1); return bucket->realpath_len; } - } + } } #ifdef TSRM_WIN32 @@ -618,16 +655,103 @@ static int tsrm_realpath_r(char *path, int start, int len, int *ll, time_t *t, i /* continue resolution anyway but don't save result in the cache */ save = 0; } + if (save) { - directory = (data.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) != 0; - if (is_dir && !directory) { - /* not a directory */ - FindClose(hFind); - return -1; - } + FindClose(hFind); } + tmp = tsrm_do_alloca(len+1, use_heap); memcpy(tmp, path, len+1); + + if(save && (data.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT)) { + /* File is a reparse point. Get the target */ + HANDLE hLink = NULL; + REPARSE_DATA_BUFFER * pbuffer; + unsigned int retlength = 0, rname_off = 0; + int bufindex = 0, rname_len = 0, isabsolute = 0; + wchar_t * reparsetarget; + + if(++(*ll) > LINK_MAX) { + return -1; + } + + hLink = CreateFile(path, GENERIC_READ, 0, NULL, OPEN_EXISTING, FILE_FLAG_OPEN_REPARSE_POINT|FILE_FLAG_BACKUP_SEMANTICS, NULL); + if(hLink == INVALID_HANDLE_VALUE) { + return -1; + } + + pbuffer = (REPARSE_DATA_BUFFER *)tsrm_do_alloca(MAXIMUM_REPARSE_DATA_BUFFER_SIZE, use_heap_large); + if(!DeviceIoControl(hLink, FSCTL_GET_REPARSE_POINT, NULL, 0, pbuffer, MAXIMUM_REPARSE_DATA_BUFFER_SIZE, &retlength, NULL)) { + tsrm_free_alloca(pbuffer, use_heap_large); + CloseHandle(hLink); + return -1; + } + + CloseHandle(hLink); + + if(pbuffer->ReparseTag == IO_REPARSE_TAG_SYMLINK) { + rname_len = pbuffer->SymbolicLinkReparseBuffer.PrintNameLength/2; + rname_off = pbuffer->SymbolicLinkReparseBuffer.PrintNameOffset/2; + reparsetarget = pbuffer->SymbolicLinkReparseBuffer.ReparseTarget; + isabsolute = (pbuffer->SymbolicLinkReparseBuffer.Flags == 0) ? 1 : 0; + } + else if(pbuffer->ReparseTag == IO_REPARSE_TAG_MOUNT_POINT) { + rname_len = pbuffer->MountPointReparseBuffer.PrintNameLength/2; + rname_off = pbuffer->MountPointReparseBuffer.PrintNameOffset/2; + reparsetarget = pbuffer->MountPointReparseBuffer.ReparseTarget; + isabsolute = 1; + } + else { + tsrm_free_alloca(pbuffer, use_heap_large); + return -1; + } + + /* Convert wide string to narrow string */ + for(bufindex = 0; bufindex < rname_len; bufindex++) { + *(path + bufindex) = (char)(reparsetarget[rname_off + bufindex]); + } + + *(path + bufindex) = 0; + tsrm_free_alloca(pbuffer, use_heap_large); + j = bufindex; + + if(isabsolute == 1) { + /* use_realpath is 0 in the call below coz path is absolute*/ + j = tsrm_realpath_r(path, 0, j, ll, t, 0, is_dir, &directory TSRMLS_CC); + if(j < 0) { + tsrm_free_alloca(tmp, use_heap); + return -1; + } + } + else { + if(i + j >= MAXPATHLEN - 1) { + tsrm_free_alloca(tmp, use_heap); + return -1; + } + + memmove(path+i, path, j+1); + memcpy(path, tmp, i-1); + path[i-1] = DEFAULT_SLASH; + j = tsrm_realpath_r(path, start, i + j, ll, t, use_realpath, is_dir, &directory TSRMLS_CC); + if(j < 0) { + tsrm_free_alloca(tmp, use_heap); + return -1; + } + } + + if(link_is_dir) { + *link_is_dir = directory; + } + } + else { + if (save) { + directory = (data.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) != 0; + if (is_dir && !directory) { + /* not a directory */ + return -1; + } + } + #elif defined(NETWARE) save = 0; tmp = tsrm_do_alloca(len+1, use_heap); @@ -699,19 +823,18 @@ static int tsrm_realpath_r(char *path, int start, int len, int *ll, time_t *t, i #ifdef TSRM_WIN32 if (j < 0 || j + len - i >= MAXPATHLEN-1) { tsrm_free_alloca(tmp, use_heap); - if (save) FindClose(hFind); return -1; } if (save) { i = strlen(data.cFileName); memcpy(path+j, data.cFileName, i+1); j += i; - FindClose(hFind); } else { /* use the original file or directory name as it wasn't found */ memcpy(path+j, tmp+i, len-i+1); j += (len-i); } + } #else if (j < 0 || j + len - i >= MAXPATHLEN-1) { tsrm_free_alloca(tmp, use_heap); |