domain.go
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//go:build cgo
package commands
import (
"encoding/json"
"fmt"
"net"
"os"
"strconv"
"strings"
"congo.gg/dev/models"
)
const domainUsage = `Manage domains in Congo Dev
Usage:
congo domain <subcommand>
Subcommands:
list List domains (JSON)
add <host> <container> [port] Add a domain route (validates DNS)
remove <host> Remove a domain route
`
func Domain() {
if len(os.Args) < 3 {
fmt.Print(domainUsage)
os.Exit(1)
}
switch os.Args[2] {
case "list":
domains, _ := models.Domains.Search("WHERE Active = 1 ORDER BY Host")
json.NewEncoder(os.Stdout).Encode(domains)
case "add":
domainAdd()
case "remove":
domainRemove()
default:
fmt.Fprintf(os.Stderr, "unknown domain subcommand %q\n", os.Args[2])
os.Exit(1)
}
}
func domainAdd() {
if len(os.Args) < 5 {
fmt.Fprintln(os.Stderr, "usage: congo domain add <host> <container> [port]")
os.Exit(1)
}
host := os.Args[3]
target := os.Args[4]
port := 5000
if len(os.Args) > 5 {
if p, err := strconv.Atoi(os.Args[5]); err == nil {
port = p
}
}
// Validate DNS resolves
ips, err := net.LookupHost(host)
if err != nil {
fmt.Fprintf(os.Stderr, "%s: DNS not found\n", host)
os.Exit(1)
}
fmt.Fprintf(os.Stderr, "%s resolves to %s\n", host, strings.Join(ips, ","))
// Store in DB
models.Domains.Insert(&models.Domain{
Host: host,
Target: target,
Port: port,
Active: true,
})
fmt.Printf("added %s -> %s:%d\n", host, target, port)
}
func domainRemove() {
if len(os.Args) < 4 {
fmt.Fprintln(os.Stderr, "usage: congo domain remove <host>")
os.Exit(1)
}
host := os.Args[3]
domain, _ := models.Domains.First("WHERE Host = ?", host)
if domain == nil {
fmt.Fprintln(os.Stderr, "domain not found")
os.Exit(1)
}
models.Domains.Delete(domain)
fmt.Printf("removed %s\n", host)
}