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Parse no deeper than MAX_PARSING_DEPTH

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while true; do printf '{"deeper": '; done | jq .
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W-Mark Kubacki authored and Nico Williams committed 2017-01-27 09:59:44 -06:00
1 parent 83e2cf607f
commit fd4ae8304e
1 file changed
+6
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src/jv_parse.c
+6
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@@ -10,6 +10,10 @@
typedef const char* presult;
#ifndef MAX_PARSING_DEPTH
#define MAX_PARSING_DEPTH (256)
#endif
#define TRY(x) do {presult msg__ = (x); if (msg__) return msg__; } while(0)
#ifdef __GNUC__
#define pfunc __attribute__((warn_unused_result)) presult
@@ -147,11 +151,13 @@ static void push(struct jv_parser* p, jv v) {
static pfunc parse_token(struct jv_parser* p, char ch) {
switch (ch) {
case '[':
if (p->stackpos >= MAX_PARSING_DEPTH) return "Exceeds depth limit for parsing";
if (jv_is_valid(p->next)) return "Expected separator between values";
push(p, jv_array());
break;
case '{':
if (p->stackpos >= MAX_PARSING_DEPTH) return "Exceeds depth limit for parsing";
if (jv_is_valid(p->next)) return "Expected separator between values";
push(p, jv_object());
break;