use go 1.12

Signed-off-by: hongming <talonwan@yunify.com>

vendor/github.com/mholt/caddy/caddyhttp/log/log.go

@@ -0,0 +1,117 @@
+// Copyright 2015 Light Code Labs, LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Package log implements request (access) logging middleware.
+package log
+
+import (
+	"fmt"
+	"net"
+	"net/http"
+
+	"github.com/mholt/caddy"
+	"github.com/mholt/caddy/caddyhttp/httpserver"
+)
+
+func init() {
+	caddy.RegisterPlugin("log", caddy.Plugin{
+		ServerType: "http",
+		Action:     setup,
+	})
+}
+
+// Logger is a basic request logging middleware.
+type Logger struct {
+	Next      httpserver.Handler
+	Rules     []*Rule
+	ErrorFunc func(http.ResponseWriter, *http.Request, int) // failover error handler
+}
+
+func (l Logger) ServeHTTP(w http.ResponseWriter, r *http.Request) (int, error) {
+	for _, rule := range l.Rules {
+		if httpserver.Path(r.URL.Path).Matches(rule.PathScope) {
+			// Record the response
+			responseRecorder := httpserver.NewResponseRecorder(w)
+
+			// Attach the Replacer we'll use so that other middlewares can
+			// set their own placeholders if they want to.
+			rep := httpserver.NewReplacer(r, responseRecorder, CommonLogEmptyValue)
+			responseRecorder.Replacer = rep
+
+			// Bon voyage, request!
+			status, err := l.Next.ServeHTTP(responseRecorder, r)
+
+			if status >= 400 {
+				// There was an error up the chain, but no response has been written yet.
+				// The error must be handled here so the log entry will record the response size.
+				if l.ErrorFunc != nil {
+					l.ErrorFunc(responseRecorder, r, status)
+				} else {
+					// Default failover error handler
+					responseRecorder.WriteHeader(status)
+					fmt.Fprintf(responseRecorder, "%d %s", status, http.StatusText(status))
+				}
+				status = 0
+			}
+
+			// Write log entries
+			for _, e := range rule.Entries {
+				// Check if there is an exception to prevent log being written
+				if !e.Log.ShouldLog(r.URL.Path) {
+					continue
+				}
+
+				// Mask IP Address
+				if e.Log.IPMaskExists {
+					hostip, _, err := net.SplitHostPort(r.RemoteAddr)
+					if err == nil {
+						maskedIP := e.Log.MaskIP(hostip)
+						// Overwrite log value with Masked version
+						rep.Set("remote", maskedIP)
+					}
+				}
+				e.Log.Println(rep.Replace(e.Format))
+
+			}
+
+			return status, err
+		}
+	}
+	return l.Next.ServeHTTP(w, r)
+}
+
+// Entry represents a log entry under a path scope
+type Entry struct {
+	Format string
+	Log    *httpserver.Logger
+}
+
+// Rule configures the logging middleware.
+type Rule struct {
+	PathScope string
+	Entries   []*Entry
+}
+
+const (
+	// DefaultLogFilename is the default log filename.
+	DefaultLogFilename = "access.log"
+	// CommonLogFormat is the common log format.
+	CommonLogFormat = `{remote} ` + CommonLogEmptyValue + ` {user} [{when}] "{method} {uri} {proto}" {status} {size}`
+	// CommonLogEmptyValue is the common empty log value.
+	CommonLogEmptyValue = "-"
+	// CombinedLogFormat is the combined log format.
+	CombinedLogFormat = CommonLogFormat + ` "{>Referer}" "{>User-Agent}"`
+	// DefaultLogFormat is the default log format.
+	DefaultLogFormat = CommonLogFormat
+)

vendor/github.com/mholt/caddy/caddyhttp/log/setup.go

@@ -0,0 +1,172 @@
+// Copyright 2015 Light Code Labs, LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package log
+
+import (
+	"net"
+	"strings"
+
+	"github.com/mholt/caddy"
+	"github.com/mholt/caddy/caddyhttp/httpserver"
+)
+
+// setup sets up the logging middleware.
+func setup(c *caddy.Controller) error {
+	rules, err := logParse(c)
+	if err != nil {
+		return err
+	}
+
+	for _, rule := range rules {
+		for _, entry := range rule.Entries {
+			entry.Log.Attach(c)
+		}
+	}
+
+	httpserver.GetConfig(c).AddMiddleware(func(next httpserver.Handler) httpserver.Handler {
+		return Logger{Next: next, Rules: rules, ErrorFunc: httpserver.DefaultErrorFunc}
+	})
+
+	return nil
+}
+
+func logParse(c *caddy.Controller) ([]*Rule, error) {
+	var rules []*Rule
+	var logExceptions []string
+	for c.Next() {
+		args := c.RemainingArgs()
+
+		ip4Mask := net.IPMask(net.ParseIP(DefaultIP4Mask).To4())
+		ip6Mask := net.IPMask(net.ParseIP(DefaultIP6Mask))
+		ipMaskExists := false
+
+		var logRoller *httpserver.LogRoller
+		logRoller = httpserver.DefaultLogRoller()
+
+		for c.NextBlock() {
+			what := c.Val()
+			where := c.RemainingArgs()
+
+			if what == "ipmask" {
+
+				if len(where) == 0 {
+					return nil, c.ArgErr()
+				}
+
+				if where[0] != "" {
+					ip4MaskStr := where[0]
+					ipv4 := net.ParseIP(ip4MaskStr).To4()
+
+					if ipv4 == nil {
+						return nil, c.Err("IPv4 Mask not valid IP Mask Format")
+					} else {
+						ip4Mask = net.IPMask(ipv4)
+						ipMaskExists = true
+					}
+				}
+
+				if len(where) > 1 {
+
+					ip6MaskStr := where[1]
+					ipv6 := net.ParseIP(ip6MaskStr)
+
+					if ipv6 == nil {
+						return nil, c.Err("IPv6 Mask not valid IP Mask Format")
+					} else {
+						ip6Mask = net.IPMask(ipv6)
+						ipMaskExists = true
+					}
+
+				}
+
+			} else if what == "except" {
+
+				for i := 0; i < len(where); i++ {
+					logExceptions = append(logExceptions, where[i])
+				}
+
+			} else if httpserver.IsLogRollerSubdirective(what) {
+
+				if err := httpserver.ParseRoller(logRoller, what, where...); err != nil {
+					return nil, err
+				}
+
+			} else {
+				return nil, c.ArgErr()
+			}
+
+		}
+
+		path := "/"
+		format := DefaultLogFormat
+		output := DefaultLogFilename
+
+		switch len(args) {
+		case 0:
+			// nothing to change
+		case 1:
+			// Only an output file specified
+			output = args[0]
+		case 2, 3:
+			// Path scope, output file, and maybe a format specified
+			path = args[0]
+			output = args[1]
+			if len(args) > 2 {
+				format = strings.Replace(args[2], "{common}", CommonLogFormat, -1)
+				format = strings.Replace(format, "{combined}", CombinedLogFormat, -1)
+			}
+		default:
+			// Maximum number of args in log directive is 3.
+			return nil, c.ArgErr()
+		}
+
+		rules = appendEntry(rules, path, &Entry{
+			Log: &httpserver.Logger{
+				Output:       output,
+				Roller:       logRoller,
+				V4ipMask:     ip4Mask,
+				V6ipMask:     ip6Mask,
+				IPMaskExists: ipMaskExists,
+				Exceptions:   logExceptions,
+			},
+			Format: format,
+		})
+	}
+
+	return rules, nil
+}
+
+func appendEntry(rules []*Rule, pathScope string, entry *Entry) []*Rule {
+	for _, rule := range rules {
+		if rule.PathScope == pathScope {
+			rule.Entries = append(rule.Entries, entry)
+			return rules
+		}
+	}
+
+	rules = append(rules, &Rule{
+		PathScope: pathScope,
+		Entries:   []*Entry{entry},
+	})
+
+	return rules
+}
+
+const (
+	// IP Masks that have no effect on IP Address
+	DefaultIP4Mask = "255.255.255.255"
+
+	DefaultIP6Mask = "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff"
+)