Files
elmprodvpn/selective-vpn-api/app/domains_handlers_file.go

110 lines
3.1 KiB
Go

package app
import (
"encoding/json"
"io"
"io/fs"
"net/http"
"os"
"path/filepath"
"strings"
)
// ---------------------------------------------------------------------
// domains file
// ---------------------------------------------------------------------
// GET /api/v1/domains/file?name=bases|meta|subs|static|smartdns|last-ips-map|last-ips-map-direct|last-ips-map-wildcard|wildcard-observed-hosts
// POST /api/v1/domains/file { "name": "...", "content": "..." }
func handleDomainsFile(w http.ResponseWriter, r *http.Request) {
switch r.Method {
case http.MethodGet:
name := strings.TrimSpace(r.URL.Query().Get("name"))
if name == "smartdns" {
domains, source := loadSmartDNSWildcardDomainsState(nil)
writeJSON(w, http.StatusOK, map[string]string{
"content": renderSmartDNSDomainsContent(domains),
"source": source,
})
return
}
if name == "wildcard-observed-hosts" {
writeJSON(w, http.StatusOK, map[string]string{
"content": readWildcardObservedHostsContent(),
"source": "derived",
})
return
}
path, ok := domainFiles[name]
if !ok {
http.Error(w, "unknown file name", http.StatusBadRequest)
return
}
source := "file"
if strings.HasPrefix(name, "last-ips-map") {
source = "artifact"
}
data, err := os.ReadFile(path)
if err != nil {
if !os.IsNotExist(err) {
http.Error(w, "read error", http.StatusInternalServerError)
return
}
switch name {
case "bases", "meta", "subs":
// fallback to embedded seed
embedName := name + ".txt"
if name == "meta" {
embedName = "meta-special.txt"
}
data, _ = fs.ReadFile(embeddedDomains, "assets/domains/"+embedName)
source = "embedded"
default:
data = []byte{}
}
}
writeJSON(w, http.StatusOK, map[string]string{
"content": string(data),
"source": source,
})
case http.MethodPost:
var body struct {
Name string `json:"name"`
Content string `json:"content"`
}
if r.Body != nil {
defer r.Body.Close()
if err := json.NewDecoder(io.LimitReader(r.Body, 1<<20)).Decode(&body); err != nil {
http.Error(w, "bad json", http.StatusBadRequest)
return
}
}
if strings.TrimSpace(body.Name) == "smartdns" {
domains := parseSmartDNSDomainsContent(body.Content)
if err := saveSmartDNSWildcardDomainsState(domains); err != nil {
http.Error(w, "write error", http.StatusInternalServerError)
return
}
writeJSON(w, http.StatusOK, map[string]string{"status": "ok"})
return
}
if body.Name == "last-ips-map-direct" || body.Name == "last-ips-map-wildcard" || body.Name == "wildcard-observed-hosts" {
http.Error(w, "read-only file name", http.StatusBadRequest)
return
}
path, ok := domainFiles[strings.TrimSpace(body.Name)]
if !ok {
http.Error(w, "unknown file name", http.StatusBadRequest)
return
}
_ = os.MkdirAll(filepath.Dir(path), 0o755)
if err := os.WriteFile(path, []byte(body.Content), 0o644); err != nil {
http.Error(w, "write error", http.StatusInternalServerError)
return
}
writeJSON(w, http.StatusOK, map[string]string{"status": "ok"})
default:
http.Error(w, "method not allowed", http.StatusMethodNotAllowed)
}
}