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apply geoip2, config file.

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dalbodeule
2025-10-14 13:02:39 +09:00
parent c55d3eda4f
commit 44e4446bf0
7 changed files with 159 additions and 13 deletions
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49
main.go
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@@ -3,15 +3,18 @@ package main
import (
"fmt"
"log"
"os"
"slices"
"strings"
"sshchat/utils"
"github.com/gliderlabs/ssh"
"github.com/joho/godotenv"
"github.com/oschwald/geoip2-golang"
)
func sessionHandler(s ssh.Session) {
var config = utils.GetConfig()
func sessionHandler(s ssh.Session, geoip *geoip2.Reader) {
ptyReq, _, isPty := s.Pty()
if !isPty {
_, _ = fmt.Fprintln(s, "Err: PTY requires. Reconnect with -t option.")
@@ -22,25 +25,47 @@ func sessionHandler(s ssh.Session) {
remote := s.RemoteAddr().String()
username := s.User()
log.Printf("[sshchat] %s connected. %s", username, remote)
geoStatus := utils.GetIPInfo(remote, geoip)
if geoStatus == nil {
log.Printf("[sshchat] %s connected. %s / UNK [FORCE DISCONNECT]", username, remote)
_, _ = fmt.Fprintf(s, "[system] Your access country is blacklisted. UNK")
_ = s.Close()
return
} else {
log.Printf("[sshchat] %s connected. %s / %s", username, remote, geoStatus.Country)
}
if slices.Contains(config.CountryBlacklist, geoStatus.Country) {
log.Printf("[sshchat] %s country blacklisted. %s", username, remote)
_, _ = fmt.Fprintf(s, "[system] Your access country is blacklisted. %s\n", geoStatus.Country)
_ = s.Close()
}
if geoStatus.Country == "ZZ" && !(strings.HasPrefix(remote, "127") || strings.HasPrefix(remote, "[::1]")) {
log.Printf("[sshchat] unknown country blacklisted. %s", username)
_, _ = fmt.Fprintf(s, "[system] Unknown country is blacklisted. %s\n", geoStatus.Country)
_ = s.Close()
} else {
log.Printf("[sshchat] %s is localhost whitelisted.", username)
}
client := utils.NewClient(s, ptyReq.Window.Height, ptyReq.Window.Width, username, remote)
defer func() {
client.Close()
log.Printf("[sshchat] %s disconnected. %s", username, remote)
log.Printf("[sshchat] %s disconnected. %s / %s", username, remote, geoStatus.Country)
}()
client.EventLoop()
}
func main() {
err := godotenv.Load()
geoip, err := utils.GetDB(config.Geoip)
port := config.Port
if err != nil {
log.Fatal("Error loading .env file")
log.Fatalf("Geoip db is error: %v", err)
}
port := os.Getenv("PORT")
keys, err := utils.CheckHostKey()
if err != nil {
log.Print("Failed to check SSH keys: generate one.\n", err)
@@ -56,8 +81,10 @@ func main() {
}
s := &ssh.Server{
Addr: ":" + port,
Handler: sessionHandler,
Addr: ":" + port,
Handler: func(s ssh.Session) {
sessionHandler(s, geoip)
},
}
for _, key := range keys {
s.AddHostKey(key)