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verify callback overflow

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Cloud Wu
2015-10-21 12:58:57 +08:00
parent 2d27df6f46
commit 26cbebfcfd
1 changed files with 1 additions and 0 deletions
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lualib-src/sproto/sproto.c
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@@ -677,6 +677,7 @@ encode_object(sproto_callback cb, struct sproto_arg *args, uint8_t *data, int si
args->value = data+SIZEOF_LENGTH; args->value = data+SIZEOF_LENGTH;
args->length = size-SIZEOF_LENGTH; args->length = size-SIZEOF_LENGTH;
sz = cb(args); sz = cb(args);
assert(sz <= size-SIZEOF_LENGTH); // verify buffer overflow
if (sz <= 0) if (sz <= 0)
return sz; return sz;
if (args->type == SPROTO_TSTRING) { if (args->type == SPROTO_TSTRING) {