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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/http.c
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@ -4142,6 +4142,7 @@ static CURLcode http_rw_hd(struct Curl_easy *data,
CURLcode result = CURLE_OK;
struct SingleRequest *k = &data->req;
int writetype;
DEBUGASSERT(!hd[hdlen]); /* null terminated */
*pconsumed = 0;
if((0x0a == *hd) || (0x0d == *hd)) {
@ -4426,6 +4427,7 @@ CURLcode Curl_http_write_resp_hd(struct Curl_easy *data,
CURLcode result;
size_t consumed;
char tmp = 0;
DEBUGASSERT(!hd[hdlen]); /* null terminated */
result = http_rw_hd(data, hd, hdlen, &tmp, 0, &consumed);
if(!result && is_eos) {