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// Copyright (c) 2016-present Mattermost, Inc. All Rights Reserved.
// See License.txt for license information.
package utils
import (
"net"
"net/http"
"net/url"
"os"
"strings"
"github.com/mattermost/mattermost-server/model"
)
func StringInSlice(a string, slice []string) bool {
for _, b := range slice {
if b == a {
return true
}
}
return false
}
func StringArrayIntersection(arr1, arr2 []string) []string {
arrMap := map[string]bool{}
result := []string{}
for _, value := range arr1 {
arrMap[value] = true
}
for _, value := range arr2 {
if arrMap[value] {
result = append(result, value)
}
}
return result
}
func FileExistsInConfigFolder(filename string) bool {
if len(filename) == 0 {
return false
}
if _, err := os.Stat(FindConfigFile(filename)); err == nil {
return true
}
return false
}
func RemoveDuplicatesFromStringArray(arr []string) []string {
result := make([]string, 0, len(arr))
seen := make(map[string]bool)
for _, item := range arr {
if !seen[item] {
result = append(result, item)
seen[item] = true
}
}
return result
}
func GetIpAddress(r *http.Request) string {
address := ""
header := r.Header.Get(model.HEADER_FORWARDED)
if len(header) > 0 {
addresses := strings.Fields(header)
if len(addresses) > 0 {
address = strings.TrimRight(addresses[0], ",")
}
}
if len(address) == 0 {
address = r.Header.Get(model.HEADER_REAL_IP)
}
if len(address) == 0 {
address, _, _ = net.SplitHostPort(r.RemoteAddr)
}
return address
}
func GetHostnameFromSiteURL(siteURL string) string {
u, err := url.Parse(siteURL)
if err != nil {
return ""
}
return u.Hostname()
}
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