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config.go
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config.go
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package config
import (
"errors"
"fmt"
"io"
"io/fs"
"os"
"path/filepath"
"runtime"
"strings"
"github.com/cli/go-gh/internal/set"
"gopkg.in/yaml.v3"
)
const (
appData = "AppData"
defaultHost = "github.com"
ghConfigDir = "GH_CONFIG_DIR"
ghEnterpriseToken = "GH_ENTERPRISE_TOKEN"
ghHost = "GH_HOST"
ghToken = "GH_TOKEN"
githubEnterpriseToken = "GITHUB_ENTERPRISE_TOKEN"
githubToken = "GITHUB_TOKEN"
localAppData = "LocalAppData"
oauthToken = "oauth_token"
xdgConfigHome = "XDG_CONFIG_HOME"
xdgDataHome = "XDG_DATA_HOME"
xdgStateHome = "XDG_STATE_HOME"
)
type Config interface {
Get(key string) (string, error)
GetForHost(host string, key string) (string, error)
Host() string
Hosts() []string
AuthToken(host string) (string, error)
}
type config struct {
global configMap
hosts configMap
}
func (c config) Get(key string) (string, error) {
return c.global.getStringValue(key)
}
func (c config) GetForHost(host, key string) (string, error) {
hostEntry, err := c.hosts.findEntry(host)
if err != nil {
return "", err
}
hostMap := configMap{Root: hostEntry.ValueNode}
return hostMap.getStringValue(key)
}
func (c config) Host() string {
if host := os.Getenv(ghHost); host != "" {
return host
}
entries := c.hosts.keys()
if len(entries) == 1 {
return entries[0]
}
return defaultHost
}
func (c config) Hosts() []string {
hosts := set.NewStringSet()
if host := os.Getenv(ghHost); host != "" {
hosts.Add(host)
}
if token, _ := c.AuthToken(defaultHost); token != "" {
hosts.Add(defaultHost)
}
entries := c.hosts.keys()
hosts.AddValues(entries)
return hosts.ToSlice()
}
func (c config) AuthToken(host string) (string, error) {
hostname := normalizeHostname(host)
if isEnterprise(hostname) {
if token := os.Getenv(ghEnterpriseToken); token != "" {
return token, nil
}
if token := os.Getenv(githubEnterpriseToken); token != "" {
return token, nil
}
if token, err := c.GetForHost(hostname, oauthToken); err == nil {
return token, nil
}
return "", NotFoundError{errors.New("not found")}
}
if token := os.Getenv(ghToken); token != "" {
return token, nil
}
if token := os.Getenv(githubToken); token != "" {
return token, nil
}
if token, err := c.GetForHost(hostname, oauthToken); err == nil {
return token, nil
}
return "", NotFoundError{errors.New("not found")}
}
func isEnterprise(host string) bool {
return host != defaultHost
}
func normalizeHostname(host string) string {
hostname := strings.ToLower(host)
if strings.HasSuffix(hostname, "."+defaultHost) {
return defaultHost
}
return hostname
}
func FromString(str string) (Config, error) {
root, err := parseData([]byte(str))
if err != nil {
return nil, err
}
cfg := config{}
globalMap := configMap{Root: root}
cfg.global = globalMap
hostsEntry, err := globalMap.findEntry("hosts")
if err == nil {
cfg.hosts = configMap{Root: hostsEntry.ValueNode}
}
return cfg, nil
}
func defaultConfig() Config {
return config{global: configMap{Root: defaultGlobal().Content[0]}}
}
func Load() (Config, error) {
return load(configFile(), hostsConfigFile())
}
func load(globalFilePath, hostsFilePath string) (Config, error) {
var readErr error
var parseErr error
globalData, readErr := readFile(globalFilePath)
if readErr != nil && !errors.Is(readErr, fs.ErrNotExist) {
return nil, readErr
}
// Use defaultGlobal node if globalFile does not exist or is empty.
global := defaultGlobal().Content[0]
if len(globalData) > 0 {
global, parseErr = parseData(globalData)
}
if parseErr != nil {
return nil, parseErr
}
hostsData, readErr := readFile(hostsFilePath)
if readErr != nil && !os.IsNotExist(readErr) {
return nil, readErr
}
// Use nil if hostsFile does not exist or is empty.
var hosts *yaml.Node
if len(hostsData) > 0 {
hosts, parseErr = parseData(hostsData)
}
if parseErr != nil {
return nil, parseErr
}
cfg := config{
global: configMap{Root: global},
hosts: configMap{Root: hosts},
}
return cfg, nil
}
// Config path precedence: GH_CONFIG_DIR, XDG_CONFIG_HOME, AppData (windows only), HOME.
func configDir() string {
var path string
if a := os.Getenv(ghConfigDir); a != "" {
path = a
} else if b := os.Getenv(xdgConfigHome); b != "" {
path = filepath.Join(b, "gh")
} else if c := os.Getenv(appData); runtime.GOOS == "windows" && c != "" {
path = filepath.Join(c, "GitHub CLI")
} else {
d, _ := os.UserHomeDir()
path = filepath.Join(d, ".config", "gh")
}
return path
}
// State path precedence: XDG_STATE_HOME, LocalAppData (windows only), HOME.
func stateDir() string {
var path string
if a := os.Getenv(xdgStateHome); a != "" {
path = filepath.Join(a, "gh")
} else if b := os.Getenv(localAppData); runtime.GOOS == "windows" && b != "" {
path = filepath.Join(b, "GitHub CLI")
} else {
c, _ := os.UserHomeDir()
path = filepath.Join(c, ".local", "state", "gh")
}
return path
}
// Data path precedence: XDG_DATA_HOME, LocalAppData (windows only), HOME.
func dataDir() string {
var path string
if a := os.Getenv(xdgDataHome); a != "" {
path = filepath.Join(a, "gh")
} else if b := os.Getenv(localAppData); runtime.GOOS == "windows" && b != "" {
path = filepath.Join(b, "GitHub CLI")
} else {
c, _ := os.UserHomeDir()
path = filepath.Join(c, ".local", "share", "gh")
}
return path
}
func configFile() string {
return filepath.Join(configDir(), "config.yml")
}
func hostsConfigFile() string {
return filepath.Join(configDir(), "hosts.yml")
}
func readFile(filename string) ([]byte, error) {
f, err := os.Open(filename)
if err != nil {
return nil, err
}
defer f.Close()
data, err := io.ReadAll(f)
if err != nil {
return nil, err
}
return data, nil
}
func parseData(data []byte) (*yaml.Node, error) {
var root yaml.Node
err := yaml.Unmarshal(data, &root)
if err != nil {
return nil, fmt.Errorf("invalid config file: %w", err)
}
if len(root.Content) == 0 || root.Content[0].Kind != yaml.MappingNode {
return nil, fmt.Errorf("invalid config file")
}
return root.Content[0], nil
}
func defaultGlobal() *yaml.Node {
return &yaml.Node{
Kind: yaml.DocumentNode,
Content: []*yaml.Node{
{
Kind: yaml.MappingNode,
Content: []*yaml.Node{
{
HeadComment: "What protocol to use when performing git operations. Supported values: ssh, https",
Kind: yaml.ScalarNode,
Value: "git_protocol",
},
{
Kind: yaml.ScalarNode,
Value: "https",
},
{
HeadComment: "What editor gh should run when creating issues, pull requests, etc. If blank, will refer to environment.",
Kind: yaml.ScalarNode,
Value: "editor",
},
{
Kind: yaml.ScalarNode,
Value: "",
},
{
HeadComment: "When to interactively prompt. This is a global config that cannot be overridden by hostname. Supported values: enabled, disabled",
Kind: yaml.ScalarNode,
Value: "prompt",
},
{
Kind: yaml.ScalarNode,
Value: "enabled",
},
{
HeadComment: "A pager program to send command output to, e.g. \"less\". Set the value to \"cat\" to disable the pager.",
Kind: yaml.ScalarNode,
Value: "pager",
},
{
Kind: yaml.ScalarNode,
Value: "",
},
{
HeadComment: "Aliases allow you to create nicknames for gh commands",
Kind: yaml.ScalarNode,
Value: "aliases",
},
{
Kind: yaml.MappingNode,
Content: []*yaml.Node{
{
Kind: yaml.ScalarNode,
Value: "co",
},
{
Kind: yaml.ScalarNode,
Value: "pr checkout",
},
},
},
{
HeadComment: "The path to a unix socket through which send HTTP connections. If blank, HTTP traffic will be handled by net/http.DefaultTransport.",
Kind: yaml.ScalarNode,
Value: "http_unix_socket",
},
{
Kind: yaml.ScalarNode,
Value: "",
},
{
HeadComment: "What web browser gh should use when opening URLs. If blank, will refer to environment.",
Kind: yaml.ScalarNode,
Value: "browser",
},
{
Kind: yaml.ScalarNode,
Value: "",
},
},
},
},
}
}