41 lines
1.4 KiB
Diff
41 lines
1.4 KiB
Diff
|
From: Ken Sharp <ken.sharp@artifex.com>
|
||
|
|
Date: Wed, 5 Oct 2016 09:10:58 +0000 (+0100)
|
||
|
|
Subject: DSC parser - validate parameters
|
||
|
|
X-Git-Url: http://git.ghostscript.com/?p=ghostpdl.git;a=commitdiff_plain;h=875a0095f37626a721c7ff57d606a0f95af03913;hp=aef8f6cfbff9080e4b9c54053bc909875c09a2be
|
||
|
|
|
||
|
|
DSC parser - validate parameters
|
||
|
|
|
||
|
|
Bug #697190 ".initialize_dsc_parser doesn't validate the parameter is a dict type before using it."
|
||
|
|
|
||
|
|
Regardless of any security implications, its simply wrong for a PostScript
|
||
|
|
operator not to validate its parameter(s).
|
||
|
|
|
||
|
|
No differences expected.
|
||
|
|
---
|
||
|
|
|
||
|
|
diff --git a/psi/zdscpars.c b/psi/zdscpars.c
|
||
|
|
index c05e154..9b4b605 100644
|
||
|
|
--- a/psi/zdscpars.c
|
||
|
|
+++ b/psi/zdscpars.c
|
||
|
|
@@ -150,11 +150,16 @@ zinitialize_dsc_parser(i_ctx_t *i_ctx_p)
|
||
|
|
ref local_ref;
|
||
|
|
int code;
|
||
|
|
os_ptr const op = osp;
|
||
|
|
- dict * const pdict = op->value.pdict;
|
||
|
|
- gs_memory_t * const mem = (gs_memory_t *)dict_memory(pdict);
|
||
|
|
- dsc_data_t * const data =
|
||
|
|
- gs_alloc_struct(mem, dsc_data_t, &st_dsc_data_t, "DSC parser init");
|
||
|
|
+ dict *pdict;
|
||
|
|
+ gs_memory_t *mem;
|
||
|
|
+ dsc_data_t *data;
|
||
|
|
|
||
|
|
+ check_read_type(*op, t_dictionary);
|
||
|
|
+
|
||
|
|
+ pdict = op->value.pdict;
|
||
|
|
+ mem = (gs_memory_t *)dict_memory(pdict);
|
||
|
|
+
|
||
|
|
+ data = gs_alloc_struct(mem, dsc_data_t, &st_dsc_data_t, "DSC parser init");
|
||
|
|
if (!data)
|
||
|
|
return_error(gs_error_VMerror);
|
||
|
|
data->document_level = 0;
|