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core: Change net.IP to netip.Addr; use netip.Prefix (#4966)

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Co-authored-by: Matt Holt <mholt@users.noreply.github.com>
This commit is contained in:
WilczyńskiT 2022-08-18 00:10:57 +02:00 committed by GitHub
parent a944de4ab7
commit c7772588bd
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GPG key ID: 4AEE18F83AFDEB23
5 changed files with 50 additions and 57 deletions
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7
caddyconfig/httpcaddyfile/addresses.go
View file

@ -17,6 +17,7 @@ package httpcaddyfile
import (
"fmt"
"net"
"net/netip"
"reflect"
"sort"
"strconv"
@ -354,9 +355,9 @@ func (a Address) Normalize() Address {
// ensure host is normalized if it's an IP address
host := strings.TrimSpace(a.Host)
if ip := net.ParseIP(host); ip != nil {
if ipv6 := ip.To16(); ipv6 != nil && ipv6.DefaultMask() == nil {
host = ipv6.String()
if ip, err := netip.ParseAddr(host); err == nil {
if ip.Is6() && !ip.Is4() && !ip.Is4In6() {
host = ip.String()
}
}

5
listeners.go
View file

@ -20,6 +20,7 @@ import (
"errors"
"fmt"
"net"
"net/netip"
"os"
"strconv"
"strings"
@ -400,7 +401,7 @@ func (na NetworkAddress) isLoopback() bool {
if na.Host == "localhost" {
return true
}
if ip := net.ParseIP(na.Host); ip != nil {
if ip, err := netip.ParseAddr(na.Host); err == nil {
return ip.IsLoopback()
}
return false
@ -410,7 +411,7 @@ func (na NetworkAddress) isWildcardInterface() bool {
if na.Host == "" {
return true
}
if ip := net.ParseIP(na.Host); ip != nil {
if ip, err := netip.ParseAddr(na.Host); err == nil {
return ip.IsUnspecified()
}
return false

30
modules/caddyhttp/matchers.go
View file

@ -20,6 +20,7 @@ import (
"fmt"
"net"
"net/http"
"net/netip"
"net/textproto"
"net/url"
"path"
@ -171,7 +172,7 @@ type (
// cidrs and zones vars should aligned always in the same
// length and indexes for matching later
cidrs []*net.IPNet
cidrs []*netip.Prefix
zones []string
logger *zap.Logger
}
@ -1311,27 +1312,24 @@ func (m *MatchRemoteIP) Provision(ctx caddy.Context) error {
m.zones = append(m.zones, "")
}
if strings.Contains(str, "/") {
_, ipNet, err := net.ParseCIDR(str)
ipNet, err := netip.ParsePrefix(str)
if err != nil {
return fmt.Errorf("parsing CIDR expression '%s': %v", str, err)
}
m.cidrs = append(m.cidrs, ipNet)
m.cidrs = append(m.cidrs, &ipNet)
} else {
ip := net.ParseIP(str)
if ip == nil {
return fmt.Errorf("invalid IP address: %s", str)
ipAddr, err := netip.ParseAddr(str)
if err != nil {
return fmt.Errorf("invalid IP address: '%s': %v", str, err)
}
mask := len(ip) * 8
m.cidrs = append(m.cidrs, &net.IPNet{
IP: ip,
Mask: net.CIDRMask(mask, mask),
})
ipNew := netip.PrefixFrom(ipAddr, ipAddr.BitLen())
m.cidrs = append(m.cidrs, &ipNew)
}
}
return nil
}
func (m MatchRemoteIP) getClientIP(r *http.Request) (net.IP, string, error) {
func (m MatchRemoteIP) getClientIP(r *http.Request) (netip.Addr, string, error) {
remote := r.RemoteAddr
zoneID := ""
if m.Forwarded {
@ -1350,11 +1348,11 @@ func (m MatchRemoteIP) getClientIP(r *http.Request) (net.IP, string, error) {
ipStr = split[0]
zoneID = split[1]
}
ip := net.ParseIP(ipStr)
if ip == nil {
return nil, zoneID, fmt.Errorf("invalid client IP address: %s", ipStr)
ipAddr, err := netip.ParseAddr(ipStr)
if err != nil {
return netip.IPv4Unspecified(), "", err
}
return ip, zoneID, nil
return ipAddr, zoneID, nil
}
// Match returns true if r matches m.

31
modules/caddyhttp/reverseproxy/reverseproxy.go
View file

@ -24,6 +24,7 @@ import (
"net"
"net/http"
"net/http/httptrace"
"net/netip"
"net/textproto"
"net/url"
"regexp"
@ -180,7 +181,7 @@ type Handler struct {
DynamicUpstreams UpstreamSource `json:"-"`
// Holds the parsed CIDR ranges from TrustedProxies
trustedProxies []*net.IPNet
trustedProxies []netip.Prefix
// Holds the named response matchers from the Caddyfile while adapting
responseMatchers map[string]caddyhttp.ResponseMatcher
@ -251,24 +252,18 @@ func (h *Handler) Provision(ctx caddy.Context) error {
// parse trusted proxy CIDRs ahead of time
for _, str := range h.TrustedProxies {
if strings.Contains(str, "/") {
_, ipNet, err := net.ParseCIDR(str)
ipNet, err := netip.ParsePrefix(str)
if err != nil {
return fmt.Errorf("parsing CIDR expression: %v", err)
return fmt.Errorf("parsing CIDR expression: '%s': %v", str, err)
}
h.trustedProxies = append(h.trustedProxies, ipNet)
} else {
ip := net.ParseIP(str)
if ip == nil {
return fmt.Errorf("invalid IP address: %s", str)
ipAddr, err := netip.ParseAddr(str)
if err != nil {
return fmt.Errorf("invalid IP address: '%s': %v", str, err)
}
if ipv4 := ip.To4(); ipv4 != nil {
ip = ipv4
}
mask := len(ip) * 8
h.trustedProxies = append(h.trustedProxies, &net.IPNet{
IP: ip,
Mask: net.CIDRMask(mask, mask),
})
ipNew := netip.PrefixFrom(ipAddr, ipAddr.BitLen())
h.trustedProxies = append(h.trustedProxies, ipNew)
}
}
@ -672,15 +667,15 @@ func (h Handler) addForwardedHeaders(req *http.Request) error {
if before, _, found := strings.Cut(clientIP, "%"); found {
clientIP = before
}
ip := net.ParseIP(clientIP)
if ip == nil {
return fmt.Errorf("invalid client IP address: %s", clientIP)
ipAddr, err := netip.ParseAddr(clientIP)
if err != nil {
return fmt.Errorf("invalid IP address: '%s': %v", clientIP, err)
}
// Check if the client is a trusted proxy
trusted := false
for _, ipRange := range h.trustedProxies {
if ipRange.Contains(ip) {
if ipRange.Contains(ipAddr) {
trusted = true
break
}

34
modules/caddytls/matchers.go
View file

@ -18,6 +18,7 @@ import (
"crypto/tls"
"fmt"
"net"
"net/netip"
"strings"
"github.com/caddyserver/caddy/v2"
@ -65,8 +66,8 @@ type MatchRemoteIP struct {
// The IPs or CIDR ranges to *NOT* match.
NotRanges []string `json:"not_ranges,omitempty"`
cidrs []*net.IPNet
notCidrs []*net.IPNet
cidrs []netip.Prefix
notCidrs []netip.Prefix
logger *zap.Logger
}
@ -105,38 +106,35 @@ func (m MatchRemoteIP) Match(hello *tls.ClientHelloInfo) bool {
if err != nil {
ipStr = remoteAddr // weird; maybe no port?
}
ip := net.ParseIP(ipStr)
if ip == nil {
ipAddr, err := netip.ParseAddr(ipStr)
if err != nil {
m.logger.Error("invalid client IP addresss", zap.String("ip", ipStr))
return false
}
return (len(m.cidrs) == 0 || m.matches(ip, m.cidrs)) &&
(len(m.notCidrs) == 0 || !m.matches(ip, m.notCidrs))
return (len(m.cidrs) == 0 || m.matches(ipAddr, m.cidrs)) &&
(len(m.notCidrs) == 0 || !m.matches(ipAddr, m.notCidrs))
}
func (MatchRemoteIP) parseIPRange(str string) ([]*net.IPNet, error) {
var cidrs []*net.IPNet
func (MatchRemoteIP) parseIPRange(str string) ([]netip.Prefix, error) {
var cidrs []netip.Prefix
if strings.Contains(str, "/") {
_, ipNet, err := net.ParseCIDR(str)
ipNet, err := netip.ParsePrefix(str)
if err != nil {
return nil, fmt.Errorf("parsing CIDR expression: %v", err)
}
cidrs = append(cidrs, ipNet)
} else {
ip := net.ParseIP(str)
if ip == nil {
return nil, fmt.Errorf("invalid IP address: %s", str)
ipAddr, err := netip.ParseAddr(str)
if err != nil {
return nil, fmt.Errorf("invalid IP address: '%s': %v", str, err)
}
mask := len(ip) * 8
cidrs = append(cidrs, &net.IPNet{
IP: ip,
Mask: net.CIDRMask(mask, mask),
})
ip := netip.PrefixFrom(ipAddr, ipAddr.BitLen())
cidrs = append(cidrs, ip)
}
return cidrs, nil
}
func (MatchRemoteIP) matches(ip net.IP, ranges []*net.IPNet) bool {
func (MatchRemoteIP) matches(ip netip.Addr, ranges []netip.Prefix) bool {
for _, ipRange := range ranges {
if ipRange.Contains(ip) {
return true