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http: add asserts for null terminator for input strings

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http_rw_hd() assumes the null terminator is present. These asserts make
sure this remains true.

Closes #19741
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Daniel Stenberg 2025-11-28 09:43:27 +01:00
parent 48939a4575
commit bfc3d131b6
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2 changed files with 3 additions and 0 deletions
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lib/transfer.c
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@ -820,6 +820,7 @@ CURLcode Curl_xfer_write_resp_hd(struct Curl_easy *data,
const char *hd0, size_t hdlen, bool is_eos)
{
if(data->conn->handler->write_resp_hd) {
DEBUGASSERT(!hd0[hdlen]); /* null terminated */
/* protocol handlers offering this function take full responsibility
* for writing all received download data to the client. */
return data->conn->handler->write_resp_hd(data, hd0, hdlen, is_eos);