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fastcgi: Fix a TODO, prevent zap using reflection for logging env (#4437)

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* fastcgi: Fix a TODO, prevent zap using reflection for logging env

* Update modules/caddyhttp/reverseproxy/fastcgi/fastcgi.go

Co-authored-by: Mohammed Al Sahaf <msaa1990@gmail.com>

Co-authored-by: Mohammed Al Sahaf <msaa1990@gmail.com>
This commit is contained in:
Francis Lavoie 2021-12-02 15:23:19 -05:00 committed by GitHub
parent c133153447
commit 8e5aafa5cd
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GPG key ID: 4AEE18F83AFDEB23
1 changed files with 17 additions and 4 deletions
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21
modules/caddyhttp/reverseproxy/fastcgi/fastcgi.go
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@ -29,6 +29,7 @@ import (
"github.com/caddyserver/caddy/v2/modules/caddyhttp/reverseproxy"
"github.com/caddyserver/caddy/v2/modules/caddytls"
"go.uber.org/zap"
"go.uber.org/zap/zapcore"
"github.com/caddyserver/caddy/v2"
)
@ -132,7 +133,7 @@ func (t Transport) RoundTrip(r *http.Request) (*http.Response, error) {
t.logger.Debug("roundtrip",
zap.Object("request", caddyhttp.LoggableHTTPRequest{Request: r}),
zap.String("dial", address),
zap.Any("env", env), // TODO: this uses reflection I think
zap.Object("env", env),
)
fcgiBackend, err := DialContext(ctx, network, address)
@ -171,10 +172,10 @@ func (t Transport) RoundTrip(r *http.Request) (*http.Response, error) {
}
// buildEnv returns a set of CGI environment variables for the request.
func (t Transport) buildEnv(r *http.Request) (map[string]string, error) {
func (t Transport) buildEnv(r *http.Request) (envVars, error) {
repl := r.Context().Value(caddy.ReplacerCtxKey).(*caddy.Replacer)
var env map[string]string
var env envVars
// Separate remote IP and port; more lenient than net.SplitHostPort
var ip, port string
@ -259,7 +260,7 @@ func (t Transport) buildEnv(r *http.Request) (map[string]string, error) {
// Some variables are unused but cleared explicitly to prevent
// the parent environment from interfering.
env = map[string]string{
env = envVars{
// Variables defined in CGI 1.1 spec
"AUTH_TYPE": "", // Not used
"CONTENT_LENGTH": r.Header.Get("Content-Length"),
@ -353,6 +354,16 @@ func (t Transport) splitPos(path string) int {
return -1
}
// envVars is a simple type to allow for speeding up zap log encoding.
type envVars map[string]string
func (env envVars) MarshalLogObject(enc zapcore.ObjectEncoder) error {
for k, v := range env {
enc.AddString(k, v)
}
return nil
}
// Map of supported protocols to Apache ssl_mod format
// Note that these are slightly different from SupportedProtocols in caddytls/config.go
var tlsProtocolStrings = map[uint16]string{
@ -366,6 +377,8 @@ var headerNameReplacer = strings.NewReplacer(" ", "_", "-", "_")
// Interface guards
var (
_ zapcore.ObjectMarshaler = (*envVars)(nil)
_ caddy.Provisioner = (*Transport)(nil)
_ http.RoundTripper = (*Transport)(nil)
)