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admin: Support config adapters at /load endpoint

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Based on Content-Type
This commit is contained in:
Matthew Holt
2019-08-22 14:52:39 -06:00
parent e34ff21a71
commit afd154119a
2 changed files with 43 additions and 4 deletions
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43
admin.go
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@ -20,6 +20,7 @@ import (
"encoding/json"
"fmt"
"io"
"io/ioutil"
"log"
"net"
"net/http"
@ -29,6 +30,7 @@ import (
"sync"
"time"
"github.com/caddyserver/caddy/caddyconfig"
"github.com/mholt/certmagic"
"github.com/rs/cors"
)
@ -164,12 +166,45 @@ func handleLoadConfig(w http.ResponseWriter, r *http.Request) {
return
}
if !strings.Contains(r.Header.Get("Content-Type"), "/json") {
http.Error(w, "unacceptable Content-Type", http.StatusBadRequest)
return
var payload io.Reader = r.Body
// if the config is formatted other than Caddy's native
// JSON, we need to adapt it before loading it
ct := r.Header.Get("Content-Type")
if !strings.Contains(ct, "/json") {
slashIdx := strings.Index(ct, "/")
if slashIdx < 0 {
http.Error(w, "Malformed Content-Type", http.StatusBadRequest)
return
}
adapterName := ct[slashIdx+1:]
cfgAdapter := caddyconfig.GetAdapter(adapterName)
if cfgAdapter == nil {
http.Error(w, "Unrecognized config adapter: "+adapterName, http.StatusBadRequest)
return
}
body, err := ioutil.ReadAll(http.MaxBytesReader(w, r.Body, 1024*1024))
if err != nil {
http.Error(w, "Error reading request body: "+err.Error(), http.StatusBadRequest)
return
}
result, warnings, err := cfgAdapter.Adapt(body, nil)
if err != nil {
log.Printf("[ADMIN][ERROR] adapting config from %s: %v", adapterName, err)
http.Error(w, fmt.Sprintf("Adapting config from %s: %v", adapterName, err), http.StatusBadRequest)
return
}
if len(warnings) > 0 {
respBody, err := json.Marshal(warnings)
if err != nil {
log.Printf("[ADMIN][ERROR] marshaling warnings: %v", err)
}
w.Write(respBody)
}
payload = bytes.NewReader(result)
}
err := Load(r.Body)
err := Load(payload)
if err != nil {
log.Printf("[ADMIN][ERROR] loading config: %v", err)
http.Error(w, err.Error(), http.StatusBadRequest)