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load_config.go
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/
load_config.go
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package configv3
import (
"encoding/json"
"io/ioutil"
"math"
"os"
"path/filepath"
"code.cloudfoundry.org/cli/command/translatableerror"
"golang.org/x/crypto/ssh/terminal"
)
// LoadConfig loads the config from the .cf/config.json and os.ENV. If the
// config.json does not exists, it will use a default config in it's place.
// Takes in an optional FlagOverride, will only use the first one passed, that
// can override the given flag values.
//
// The '.cf' directory will be read in one of the following locations on UNIX
// Systems:
// 1. $CF_HOME/.cf if $CF_HOME is set
// 2. $HOME/.cf as the default
//
// The '.cf' directory will be read in one of the following locations on
// Windows Systems:
// 1. CF_HOME\.cf if CF_HOME is set
// 2. HOMEDRIVE\HOMEPATH\.cf if HOMEDRIVE or HOMEPATH is set
// 3. USERPROFILE\.cf as the default
func LoadConfig(flags ...FlagOverride) (*Config, error) {
err := removeOldTempConfigFiles()
if err != nil {
return nil, err
}
configFilePath := ConfigFilePath()
config := Config{
ConfigFile: JSONConfig{
ConfigVersion: 3,
Target: DefaultTarget,
ColorEnabled: DefaultColorEnabled,
PluginRepositories: []PluginRepository{{
Name: DefaultPluginRepoName,
URL: DefaultPluginRepoURL,
}},
},
}
var jsonError error
if _, err = os.Stat(configFilePath); err == nil || !os.IsNotExist(err) {
var file []byte
file, err = ioutil.ReadFile(configFilePath)
if err != nil {
return nil, err
}
if len(file) == 0 {
// TODO: change this to not use translatableerror
jsonError = translatableerror.EmptyConfigError{FilePath: configFilePath}
} else {
var configFile JSONConfig
err = json.Unmarshal(file, &configFile)
if err != nil {
return nil, err
}
config.ConfigFile = configFile
}
}
if config.ConfigFile.SSHOAuthClient == "" {
config.ConfigFile.SSHOAuthClient = DefaultSSHOAuthClient
}
if config.ConfigFile.UAAOAuthClient == "" {
config.ConfigFile.UAAOAuthClient = DefaultUAAOAuthClient
config.ConfigFile.UAAOAuthClientSecret = DefaultUAAOAuthClientSecret
}
config.ENV = EnvOverride{
BinaryName: filepath.Base(os.Args[0]),
CFColor: os.Getenv("CF_COLOR"),
CFDialTimeout: os.Getenv("CF_DIAL_TIMEOUT"),
CFLogLevel: os.Getenv("CF_LOG_LEVEL"),
CFPassword: os.Getenv("CF_PASSWORD"),
CFPluginHome: os.Getenv("CF_PLUGIN_HOME"),
CFStagingTimeout: os.Getenv("CF_STAGING_TIMEOUT"),
CFStartupTimeout: os.Getenv("CF_STARTUP_TIMEOUT"),
CFTrace: os.Getenv("CF_TRACE"),
CFUsername: os.Getenv("CF_USERNAME"),
DockerPassword: os.Getenv("CF_DOCKER_PASSWORD"),
Experimental: os.Getenv("CF_CLI_EXPERIMENTAL"),
ForceTTY: os.Getenv("FORCE_TTY"),
HTTPSProxy: os.Getenv("https_proxy"),
Lang: os.Getenv("LANG"),
LCAll: os.Getenv("LC_ALL"),
}
pluginFilePath := filepath.Join(config.PluginHome(), "config.json")
if _, err = os.Stat(pluginFilePath); os.IsNotExist(err) {
config.pluginsConfig = PluginsConfig{
Plugins: make(map[string]Plugin),
}
} else {
var file []byte
file, err = ioutil.ReadFile(pluginFilePath)
if err != nil {
return nil, err
}
err = json.Unmarshal(file, &config.pluginsConfig)
if err != nil {
return nil, err
}
for name, plugin := range config.pluginsConfig.Plugins {
plugin.Name = name
config.pluginsConfig.Plugins[name] = plugin
}
}
if len(flags) > 0 {
config.Flags = flags[0]
}
pwd, err := os.Getwd()
if err != nil {
return nil, err
}
// Developer Note: The following is untested! Change at your own risk.
isTTY := terminal.IsTerminal(int(os.Stdout.Fd()))
terminalWidth := math.MaxInt32
if isTTY {
var err error
terminalWidth, _, err = terminal.GetSize(int(os.Stdout.Fd()))
if err != nil {
return nil, err
}
}
config.detectedSettings = detectedSettings{
currentDirectory: pwd,
terminalWidth: terminalWidth,
tty: isTTY,
}
return &config, jsonError
}
func removeOldTempConfigFiles() error {
oldTempFileNames, err := filepath.Glob(filepath.Join(configDirectory(), "temp-config?*"))
if err != nil {
return err
}
for _, oldTempFileName := range oldTempFileNames {
err = os.Remove(oldTempFileName)
if err != nil {
return err
}
}
return nil
}