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| author | Christoph M. Becker <cmbecker69@gmx.de> | 2020-09-09 19:21:41 +0200 |
|---|---|---|
| committer | Christoph M. Becker <cmbecker69@gmx.de> | 2020-09-22 13:15:07 +0200 |
| commit | 4000780b3d0bbba2d94f65602e602c3892d9775b (patch) | |
| tree | 5616d28bb711b58b132faba79d4e7353c661f9c3 /main | |
| parent | 730fdc77a74ce4816cfb10181357e3eee92e2d3b (diff) | |
| download | php-git-4000780b3d0bbba2d94f65602e602c3892d9775b.tar.gz | |
Fix #79423: copy command is limited to size of file it can copy
Passing `NULL` as `lpFileSizeHigh` to `GetFileSize()` gives wrong
results for files larger than 0xFFFFFFFF bytes. We fix this by using
`GetFileSizeEx()`, and let the mapping fail, if the file size is too
large for the architecture.
Closes GH-5319.
Diffstat (limited to 'main')
| -rw-r--r-- | main/streams/plain_wrapper.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/main/streams/plain_wrapper.c b/main/streams/plain_wrapper.c index 2b81912857..d00a6efe29 100644 --- a/main/streams/plain_wrapper.c +++ b/main/streams/plain_wrapper.c @@ -749,6 +749,7 @@ static int php_stdiop_set_option(php_stream *stream, int option, int value, void php_stream_mmap_range *range = (php_stream_mmap_range*)ptrparam; HANDLE hfile = (HANDLE)_get_osfhandle(fd); DWORD prot, acc, loffs = 0, delta = 0; + LARGE_INTEGER file_size; switch (value) { case PHP_STREAM_MMAP_SUPPORTED: @@ -785,7 +786,22 @@ static int php_stdiop_set_option(php_stream *stream, int option, int value, void return PHP_STREAM_OPTION_RETURN_ERR; } - size = GetFileSize(hfile, NULL); + if (!GetFileSizeEx(hfile, &file_size)) { + CloseHandle(data->file_mapping); + data->file_mapping = NULL; + return PHP_STREAM_OPTION_RETURN_ERR; + } +# if defined(_WIN64) + size = file_size.QuadPart; +# else + if (file_size.HighPart) { + CloseHandle(data->file_mapping); + data->file_mapping = NULL; + return PHP_STREAM_OPTION_RETURN_ERR; + } else { + size = file_size.LowPart; + } +# endif if (range->offset > size) { range->offset = size; } |