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https://github.com/coredns/coredns.git
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5301c5af5f
Cleanup the errors and removed deadcode along the way. The leaves some error laying around, mostly about commenting exported identifier. We should look hard if those really are needed.
60 lines
1.8 KiB
Go
60 lines
1.8 KiB
Go
package storage
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import (
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"net/http"
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"os"
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"path"
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"path/filepath"
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"runtime"
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)
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// dir wraps an http.Dir that restrict file access to a specific directory tree, see http.Dir's documentation
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// for methods for accessing files.
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type dir http.Dir
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// CoreDir is the directory where middleware can store assets, like zone files after a zone transfer
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// or public and private keys or anything else a middleware might need. The convention is to place
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// assets in a subdirectory named after the zone prefixed with "D", to prevent the root zone become a hidden directory.
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//
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// Dexample.org/Kexample.org<something>.key
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//
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// Note that subzone(s) under example.org are places in the own directory under CoreDir:
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//
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// Dexample.org/...
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// Db.example.org/...
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//
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// CoreDir will default to "$HOME/.coredns" on Unix, but it's location can be overriden with the COREDNSPATH
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// environment variable.
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var CoreDir = dir(fsPath())
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func (d dir) Zone(z string) dir {
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if z != "." && z[len(z)-2] == '.' {
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return dir(path.Join(string(d), "D"+z[:len(z)-1]))
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}
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return dir(path.Join(string(d), "D"+z))
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}
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// fsPath returns the path to the directory where the application may store data.
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// If COREDNSPATH env variable. is set, that value is used. Otherwise, the path is
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// the result of evaluating "$HOME/.coredns".
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func fsPath() string {
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if corePath := os.Getenv("COREDNSPATH"); corePath != "" {
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return corePath
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}
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return filepath.Join(userHomeDir(), ".coredns")
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}
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// userHomeDir returns the user's home directory according to environment variables.
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//
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// Credit: http://stackoverflow.com/a/7922977/1048862
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func userHomeDir() string {
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if runtime.GOOS == "windows" {
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home := os.Getenv("HOMEDRIVE") + os.Getenv("HOMEPATH")
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if home == "" {
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home = os.Getenv("USERPROFILE")
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}
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return home
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}
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return os.Getenv("HOME")
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}
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