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dc12bd9743
* proxyprotocol: use github.com/pires/go-proxyproto * Fix typo: r/generelly/generally Co-authored-by: Francis Lavoie <lavofr@gmail.com> * add config options for `Deny` CIDR and fallback policy * use `netip` package & trust unix sockets --------- Co-authored-by: Francis Lavoie <lavofr@gmail.com>
83 lines
2.2 KiB
Go
83 lines
2.2 KiB
Go
package proxyprotocol
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import (
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"errors"
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"fmt"
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"strings"
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goproxy "github.com/pires/go-proxyproto"
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)
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type Policy int
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// as defined in: https://pkg.go.dev/github.com/pires/go-proxyproto@v0.7.0#Policy
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const (
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// IGNORE address from PROXY header, but accept connection
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PolicyIGNORE Policy = iota
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// USE address from PROXY header
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PolicyUSE
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// REJECT connection when PROXY header is sent
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// Note: even though the first read on the connection returns an error if
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// a PROXY header is present, subsequent reads do not. It is the task of
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// the code using the connection to handle that case properly.
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PolicyREJECT
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// REQUIRE connection to send PROXY header, reject if not present
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// Note: even though the first read on the connection returns an error if
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// a PROXY header is not present, subsequent reads do not. It is the task
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// of the code using the connection to handle that case properly.
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PolicyREQUIRE
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// SKIP accepts a connection without requiring the PROXY header
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// Note: an example usage can be found in the SkipProxyHeaderForCIDR
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// function.
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PolicySKIP
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)
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var policyToGoProxyPolicy = map[Policy]goproxy.Policy{
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PolicyUSE: goproxy.USE,
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PolicyIGNORE: goproxy.IGNORE,
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PolicyREJECT: goproxy.REJECT,
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PolicyREQUIRE: goproxy.REQUIRE,
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PolicySKIP: goproxy.SKIP,
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}
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var policyMap = map[Policy]string{
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PolicyUSE: "USE",
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PolicyIGNORE: "IGNORE",
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PolicyREJECT: "REJECT",
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PolicyREQUIRE: "REQUIRE",
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PolicySKIP: "SKIP",
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}
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var policyMapRev = map[string]Policy{
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"USE": PolicyUSE,
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"IGNORE": PolicyIGNORE,
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"REJECT": PolicyREJECT,
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"REQUIRE": PolicyREQUIRE,
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"SKIP": PolicySKIP,
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}
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// MarshalText implements the text marshaller method.
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func (x Policy) MarshalText() ([]byte, error) {
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return []byte(policyMap[x]), nil
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}
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// UnmarshalText implements the text unmarshaller method.
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func (x *Policy) UnmarshalText(text []byte) error {
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name := string(text)
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tmp, err := parsePolicy(name)
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if err != nil {
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return err
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}
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*x = tmp
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return nil
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}
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func parsePolicy(name string) (Policy, error) {
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if x, ok := policyMapRev[strings.ToUpper(name)]; ok {
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return x, nil
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}
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return Policy(0), fmt.Errorf("%s is %w", name, errInvalidPolicy)
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}
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var errInvalidPolicy = errors.New("invalid policy")
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