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setopt: allow CURLOPT_INTERFACE to be set to NULL

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Ref: https://github.com/curl/curl/discussions/14299#discussioncomment-10393909
Regression from 3060557af7 (shipped in 8.9.0)

Closes #14629
This commit is contained in:
Daniel Stenberg 2024-08-21 11:07:06 +02:00
parent 3065f106e3
commit b0b4b481b5
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GPG key ID: 5CC908FDB71E12C2
4 changed files with 19 additions and 21 deletions
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22
lib/setopt.c
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@ -139,30 +139,24 @@ static CURLcode setstropt_userpwd(char *option, char **userp, char **passwdp)
return CURLE_OK;
}
static CURLcode setstropt_interface(
char *option, char **devp, char **ifacep, char **hostp)
static CURLcode setstropt_interface(char *option, char **devp,
char **ifacep, char **hostp)
{
char *dev = NULL;
char *iface = NULL;
char *host = NULL;
size_t len;
CURLcode result;
DEBUGASSERT(devp);
DEBUGASSERT(ifacep);
DEBUGASSERT(hostp);
/* Parse the interface details */
if(!option || !*option)
return CURLE_BAD_FUNCTION_ARGUMENT;
len = strlen(option);
if(len > 255)
return CURLE_BAD_FUNCTION_ARGUMENT;
result = Curl_parse_interface(option, len, &dev, &iface, &host);
if(result)
return result;
if(option) {
/* Parse the interface details if set, otherwise clear them all */
result = Curl_parse_interface(option, &dev, &iface, &host);
if(result)
return result;
}
free(*devp);
*devp = dev;