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add SafeAddrPort and SafeAddr #21

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Merged
daenney merged 1 commit into from
Jul 7, 2026
Merged

add SafeAddrPort and SafeAddr #21

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10 changes: 9 additions & 1 deletion ssrf.go
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Original file line number Diff line number Diff line change
Expand Up @@ -226,15 +226,23 @@ func (g *Guardian) Safe(network string, address string, _ syscall.RawConn) error
return fmt.Errorf("%w: could not parse %s: %s", ErrInvalidHostPort, address, err)
}

return g.SafeAddrPort(ipport)
}

// SafeAddrPort operates like Safe except only the port and IP address are checked.
func (g *Guardian) SafeAddrPort(ipport netip.AddrPort) error {
if g.ports != nil {
port := ipport.Port()
if !slices.Contains(g.ports, port) {
return fmt.Errorf("%w: %d is not a permitted port (%s)", ErrProhibitedPort, port, g.strPorts)
}
}

ip := ipport.Addr()
return g.SafeAddr(ipport.Addr())
}

// SafeAddrPort operates like Safe except only the IP address is checked.
func (g *Guardian) SafeAddr(ip netip.Addr) error {
if ip.Is6() {
for _, net := range g.allowedv6Prefixes {
if net.Contains(ip) {
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