From 72267b224a4412576b42f973a8b4060cc6542c92 Mon Sep 17 00:00:00 2001
From: "Sven M. Hallberg" <pesco@khjk.org>
Date: Sat, 23 Nov 2019 16:14:24 +0100
Subject: [PATCH] add some error output to kstream
---
pdf.c | 18 ++++++++++--------
1 file changed, 10 insertions(+), 8 deletions(-)
diff --git a/pdf.c b/pdf.c
index 774c0b8..0406e51 100644
--- a/pdf.c
+++ b/pdf.c
@@ -345,9 +345,6 @@ kstream(HAllocator *mm__, const HParsedToken *x, void *env)
HBytes k;
size_t sz;
- //fprintf(stderr, "kstream dict: %zu elems\n", dict->used);
- //h_pprint(stderr, x, 0, 2);
-
/* look for the Length entry */
for (size_t i = 0; i < dict->used; i++) {
ent = dict->elements[i];
@@ -358,15 +355,20 @@ kstream(HAllocator *mm__, const HParsedToken *x, void *env)
break;
}
}
- if (v == NULL || v->token_type != TT_UINT)
+ if (v == NULL || v->token_type != TT_SINT || v->sint < 0)
goto fail;
- sz = (size_t)v->uint;
- // XXX support indirect objects for the Length value?!
+ sz = (size_t)v->sint;
+ // XXX support indirect objects for the Length value!
return h_repeat_n__m(mm__, h_uint8__m(mm__), sz);
fail:
- //fprintf(stderr, "kstream fail.\n");
- //if(v) fprintf(stderr, " v:%d\n", v->token_type);
+ if (v == NULL)
+ fprintf(stderr, "stream /Length missing\n");
+ else if (v -> token_type != TT_SINT)
+ fprintf(stderr, "stream /Length not an integer\n");
+ else if (v < 0)
+ fprintf(stderr, "stream /Length negative\n");
+ h_pprint(stderr, x, 0, 2); // XXX debug
return h_nothing_p__m(mm__);
}
--
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