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path: root/utils/config.go
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// Copyright (c) 2015 Spinpunch, Inc. All Rights Reserved.
// See License.txt for license information.

package utils

import (
	"encoding/json"
	"fmt"
	"os"
	"path/filepath"
	"strconv"

	l4g "code.google.com/p/log4go"

	"github.com/mattermost/platform/model"
)

const (
	MODE_DEV        = "dev"
	MODE_BETA       = "beta"
	MODE_PROD       = "prod"
	LOG_ROTATE_SIZE = 10000
)

type ServiceSettings struct {
	SiteName                   string
	Mode                       string
	AllowTesting               bool
	UseSSL                     bool
	Port                       string
	InviteSalt                 string
	PublicLinkSalt             string
	ResetSalt                  string
	AnalyticsUrl               string
	UseLocalStorage            bool
	StorageDirectory           string
	AllowedLoginAttempts       int
	DisableEmailSignUp         bool
	EnableOAuthServiceProvider bool
}

type SSOSetting struct {
	Allow           bool
	Secret          string
	Id              string
	Scope           string
	AuthEndpoint    string
	TokenEndpoint   string
	UserApiEndpoint string
}

type SqlSettings struct {
	DriverName         string
	DataSource         string
	DataSourceReplicas []string
	MaxIdleConns       int
	MaxOpenConns       int
	Trace              bool
	AtRestEncryptKey   string
}

type LogSettings struct {
	ConsoleEnable bool
	ConsoleLevel  string
	FileEnable    bool
	FileLevel     string
	FileFormat    string
	FileLocation  string
}

type AWSSettings struct {
	S3AccessKeyId     string
	S3SecretAccessKey string
	S3Bucket          string
	S3Region          string
}

type ImageSettings struct {
	ThumbnailWidth  uint
	ThumbnailHeight uint
	PreviewWidth    uint
	PreviewHeight   uint
	ProfileWidth    uint
	ProfileHeight   uint
	InitialFont     string
}

type EmailSettings struct {
	ByPassEmail          bool
	SMTPUsername         string
	SMTPPassword         string
	SMTPServer           string
	UseTLS               bool
	UseStartTLS          bool
	FeedbackEmail        string
	FeedbackName         string
	ApplePushServer      string
	ApplePushCertPublic  string
	ApplePushCertPrivate string
}

type RateLimitSettings struct {
	UseRateLimiter   bool
	PerSec           int
	MemoryStoreSize  int
	VaryByRemoteAddr bool
	VaryByHeader     string
}

type PrivacySettings struct {
	ShowEmailAddress bool
	ShowPhoneNumber  bool
	ShowSkypeId      bool
	ShowFullName     bool
}

type ClientSettings struct {
	SegmentDeveloperKey string
	GoogleDeveloperKey  string
}

type TeamSettings struct {
	MaxUsersPerTeam           int
	AllowPublicLink           bool
	AllowValetDefault         bool
	TourLink                  string
	DefaultThemeColor         string
	DisableTeamCreation       bool
	RestrictCreationToDomains string
}

type Config struct {
	LogSettings       LogSettings
	ServiceSettings   ServiceSettings
	SqlSettings       SqlSettings
	AWSSettings       AWSSettings
	ImageSettings     ImageSettings
	EmailSettings     EmailSettings
	RateLimitSettings RateLimitSettings
	PrivacySettings   PrivacySettings
	ClientSettings    ClientSettings
	TeamSettings      TeamSettings
	SSOSettings       map[string]SSOSetting
}

func (o *Config) ToJson() string {
	b, err := json.Marshal(o)
	if err != nil {
		return ""
	} else {
		return string(b)
	}
}

var Cfg *Config = &Config{}
var CfgLastModified int64 = 0
var ClientProperties map[string]string = map[string]string{}
var SanitizeOptions map[string]bool = map[string]bool{}

func FindConfigFile(fileName string) string {
	if _, err := os.Stat("/tmp/" + fileName); err == nil {
		fileName, _ = filepath.Abs("/tmp/" + fileName)
	} else if _, err := os.Stat("./config/" + fileName); err == nil {
		fileName, _ = filepath.Abs("./config/" + fileName)
	} else if _, err := os.Stat("../config/" + fileName); err == nil {
		fileName, _ = filepath.Abs("../config/" + fileName)
	} else if _, err := os.Stat(fileName); err == nil {
		fileName, _ = filepath.Abs(fileName)
	}

	return fileName
}

func FindDir(dir string) string {
	fileName := "."
	if _, err := os.Stat("./" + dir + "/"); err == nil {
		fileName, _ = filepath.Abs("./" + dir + "/")
	} else if _, err := os.Stat("../" + dir + "/"); err == nil {
		fileName, _ = filepath.Abs("../" + dir + "/")
	} else if _, err := os.Stat("/tmp/" + dir); err == nil {
		fileName, _ = filepath.Abs("/tmp/" + dir)
	}

	return fileName + "/"
}

func ConfigureCmdLineLog() {
	ls := LogSettings{}
	ls.ConsoleEnable = true
	ls.ConsoleLevel = "ERROR"
	ls.FileEnable = false
	configureLog(&ls)
}

func configureLog(s *LogSettings) {

	l4g.Close()

	if s.ConsoleEnable {
		level := l4g.DEBUG
		if s.ConsoleLevel == "INFO" {
			level = l4g.INFO
		} else if s.ConsoleLevel == "ERROR" {
			level = l4g.ERROR
		}

		l4g.AddFilter("stdout", level, l4g.NewConsoleLogWriter())
	}

	if s.FileEnable {
		if s.FileFormat == "" {
			s.FileFormat = "[%D %T] [%L] %M"
		}

		if s.FileLocation == "" {
			s.FileLocation = FindDir("logs") + "mattermost.log"
		}

		level := l4g.DEBUG
		if s.FileLevel == "INFO" {
			level = l4g.INFO
		} else if s.FileLevel == "ERROR" {
			level = l4g.ERROR
		}

		flw := l4g.NewFileLogWriter(s.FileLocation, false)
		flw.SetFormat(s.FileFormat)
		flw.SetRotate(true)
		flw.SetRotateLines(LOG_ROTATE_SIZE)
		l4g.AddFilter("file", level, flw)
	}
}

// LoadConfig will try to search around for the corresponding config file.
// It will search /tmp/fileName then attempt ./config/fileName,
// then ../config/fileName and last it will look at fileName
func LoadConfig(fileName string) {

	fileName = FindConfigFile(fileName)

	file, err := os.Open(fileName)
	if err != nil {
		panic("Error opening config file=" + fileName + ", err=" + err.Error())
	}

	decoder := json.NewDecoder(file)
	config := Config{}
	err = decoder.Decode(&config)
	if err != nil {
		panic("Error decoding config file=" + fileName + ", err=" + err.Error())
	}

	if info, err := file.Stat(); err != nil {
		panic("Error getting config info file=" + fileName + ", err=" + err.Error())
	} else {
		CfgLastModified = info.ModTime().Unix()
	}

	configureLog(&config.LogSettings)

	Cfg = &config
	SanitizeOptions = getSanitizeOptions(Cfg)
	ClientProperties = getClientProperties(Cfg)
}

func getSanitizeOptions(c *Config) map[string]bool {
	options := map[string]bool{}
	options["fullname"] = c.PrivacySettings.ShowFullName
	options["email"] = c.PrivacySettings.ShowEmailAddress
	options["skypeid"] = c.PrivacySettings.ShowSkypeId
	options["phonenumber"] = c.PrivacySettings.ShowPhoneNumber

	return options
}

func getClientProperties(c *Config) map[string]string {
	props := make(map[string]string)

	props["Version"] = model.GetFullVersion()
	props["BuildNumber"] = model.BUILD_NUMBER
	props["BuildDate"] = model.BUILD_DATE

	props["SiteName"] = c.ServiceSettings.SiteName
	props["ByPassEmail"] = strconv.FormatBool(c.EmailSettings.ByPassEmail)
	props["FeedbackEmail"] = c.EmailSettings.FeedbackEmail
	props["ShowEmailAddress"] = strconv.FormatBool(c.PrivacySettings.ShowEmailAddress)
	props["AllowPublicLink"] = strconv.FormatBool(c.TeamSettings.AllowPublicLink)
	props["SegmentDeveloperKey"] = c.ClientSettings.SegmentDeveloperKey
	props["GoogleDeveloperKey"] = c.ClientSettings.GoogleDeveloperKey
	props["AnalyticsUrl"] = c.ServiceSettings.AnalyticsUrl
	props["ByPassEmail"] = strconv.FormatBool(c.EmailSettings.ByPassEmail)
	props["ProfileHeight"] = fmt.Sprintf("%v", c.ImageSettings.ProfileHeight)
	props["ProfileWidth"] = fmt.Sprintf("%v", c.ImageSettings.ProfileWidth)
	props["ProfileWidth"] = fmt.Sprintf("%v", c.ImageSettings.ProfileWidth)
	props["EnableOAuthServiceProvider"] = strconv.FormatBool(c.ServiceSettings.EnableOAuthServiceProvider)

	return props
}

func IsS3Configured() bool {
	if Cfg.AWSSettings.S3AccessKeyId == "" || Cfg.AWSSettings.S3SecretAccessKey == "" || Cfg.AWSSettings.S3Region == "" || Cfg.AWSSettings.S3Bucket == "" {
		return false
	}

	return true
}

func GetAllowedAuthServices() []string {
	authServices := []string{}
	for name, service := range Cfg.SSOSettings {
		if service.Allow {
			authServices = append(authServices, name)
		}
	}

	if !Cfg.ServiceSettings.DisableEmailSignUp {
		authServices = append(authServices, "email")
	}

	return authServices
}

func IsServiceAllowed(s string) bool {
	if len(s) == 0 {
		return false
	}

	if service, ok := Cfg.SSOSettings[s]; ok {
		if service.Allow {
			return true
		}
	}

	return false
}