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| author | Daniel Stenberg <daniel@haxx.se> | 2021-05-29 23:57:58 +0200 |
|---|---|---|
| committer | Daniel Stenberg <daniel@haxx.se> | 2021-05-30 19:49:40 +0200 |
| commit | 1c1d9f1affbd3367bcb24062e261d0ea5d185e3a (patch) | |
| tree | cebd58fc62fe33c97b6f22d0f03b3d87a65e04ae /lib/hostip.c | |
| parent | 9097843e8fe42aa237c3c2087cfde781fbb5b331 (diff) | |
| download | curl-1c1d9f1affbd3367bcb24062e261d0ea5d185e3a.tar.gz | |
hsts: ignore numberical IP address hosts
Also, use a single function library-wide for detecting if a given hostname is
a numerical IP address.
Reported-by: Harry Sintonen
Fixes #7146
Closes #7149
Diffstat (limited to 'lib/hostip.c')
| -rw-r--r-- | lib/hostip.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/lib/hostip.c b/lib/hostip.c index e0e3cfc2c..b0d2db0b4 100644 --- a/lib/hostip.c +++ b/lib/hostip.c @@ -461,6 +461,25 @@ Curl_cache_addr(struct Curl_easy *data, } /* + * Curl_host_is_ipnum() returns TRUE if the given string is a numerical IPv4 + * (or IPv6 if supported) address. + */ +bool Curl_host_is_ipnum(const char *hostname) +{ + struct in_addr in; +#ifdef ENABLE_IPV6 + struct in6_addr in6; +#endif + if(Curl_inet_pton(AF_INET, hostname, &in) > 0 +#ifdef ENABLE_IPV6 + || Curl_inet_pton(AF_INET6, hostname, &in6) > 0 +#endif + ) + return TRUE; + return FALSE; +} + +/* * Curl_resolv() is the main name resolve function within libcurl. It resolves * a name and returns a pointer to the entry in the 'entry' argument (if one * is provided). This function might return immediately if we're using asynch |