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noproxy: guard against empty hostnames in noproxy check

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When checking for a noproxy setting we need to ensure that we get
a hostname passed in. If there is no hostname then there cannot be
a matching noproxy rule for it by definition.

Closes: #10057
Reported-by: Geeknik Labs
Reviewed-by: Daniel Stenberg <daniel@haxx.se>
This commit is contained in:
Daniel Gustafsson 2022-12-08 23:37:32 +01:00
parent c8d24d4e77
commit 60453483b5
1 changed files with 7 additions and 0 deletions
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7
lib/noproxy.c
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@ -121,6 +121,13 @@ enum nametype {
****************************************************************/
bool Curl_check_noproxy(const char *name, const char *no_proxy)
{
/*
* If we don't have a hostname at all, like for example with a FILE
* transfer, we have nothing to interrogate the noproxy list with.
*/
if(!name || name[0] == '\0')
return FALSE;
/* no_proxy=domain1.dom,host.domain2.dom
* (a comma-separated list of hosts which should
* not be proxied, or an asterisk to override