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mqtt: eliminate size_t cast

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Use new curlx_sotouz_fits() instead.

Closes #19622
This commit is contained in:
Stefan Eissing 2025-11-20 11:40:23 +01:00 • committed by Daniel Stenberg
parent d9e9dd7f20
commit b812be567a
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3 changed files with 25 additions and 4 deletions
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9
lib/mqtt.c
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@ -192,7 +192,7 @@ static CURLcode mqtt_send(struct Curl_easy *data,
if(result)
return result;
mq->lastTime = curlx_now();
Curl_debug(data, CURLINFO_HEADER_OUT, buf, (size_t)n);
Curl_debug(data, CURLINFO_HEADER_OUT, buf, n);
if(len != n) {
size_t nsend = len - n;
if(curlx_dyn_len(&mq->sendbuf)) {
@ -602,10 +602,11 @@ static CURLcode mqtt_publish(struct Curl_easy *data)
DEBUGF(infof(data, "mqtt_publish without payload, return bad arg"));
return CURLE_BAD_FUNCTION_ARGUMENT;
}
if(postfieldsize < 0)
if(!curlx_sotouz_fits(postfieldsize, &payloadlen)) {
if(postfieldsize > 0) /* off_t does not fit into size_t */
return CURLE_BAD_FUNCTION_ARGUMENT;
payloadlen = strlen(payload);
else
payloadlen = (size_t)postfieldsize;
}
result = mqtt_get_topic(data, &topic, &topiclen);
if(result)