diff options
Diffstat (limited to 'base/gp_mshdl.c')
| -rw-r--r-- | base/gp_mshdl.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/base/gp_mshdl.c b/base/gp_mshdl.c index 2b964ed7..8d87cead 100644 --- a/base/gp_mshdl.c +++ b/base/gp_mshdl.c @@ -95,8 +95,17 @@ mswin_handle_fopen(gx_io_device * iodev, const char *fname, const char *access, long hfile; /* Correct for Win32, may be wrong for Win64 */ gs_lib_ctx_t *ctx = mem->gs_lib_ctx; gs_fs_list_t *fs = ctx->core->fs; + char f[gp_file_name_sizeof]; + const size_t preflen = strlen(iodev->dname); + const size_t nlen = strlen(fname); - if (gp_validate_path(mem, fname, access) != 0) + if (preflen + nlen >= gp_file_name_sizeof) + return_error(gs_error_invalidaccess); + + memcpy(f, iodev->dname, preflen); + memcpy(f + preflen, fname, nlen + 1); + + if (gp_validate_path(mem, f, access) != 0) return gs_error_invalidfileaccess; /* First we try the open_handle method. */ |