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fix(rpc): don't parse msgpack if buflen is 0 (#21899)

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This prevents `buflen` from becoming a very large number when it is 0
when calling mpack_rtoken().
This commit is contained in:
zeertzjq
2023-01-19 20:38:29 +08:00
committed by GitHub
parent 363d153bb9
commit adfad50ac0
1 changed files with 3 additions and 0 deletions
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3
src/mpack/mpack_core.c
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@@ -173,6 +173,9 @@ MPACK_API int mpack_write(mpack_tokbuf_t *tokbuf, char **buf, size_t *buflen,
int mpack_rtoken(const char **buf, size_t *buflen, mpack_token_t *tok) int mpack_rtoken(const char **buf, size_t *buflen, mpack_token_t *tok)
{ {
if (*buflen == 0) {
return MPACK_EOF;
}
unsigned char t = ADVANCE(buf, buflen); unsigned char t = ADVANCE(buf, buflen);
if (t < 0x80) { if (t < 0x80) {
/* positive fixint */ /* positive fixint */