rewrite using net/http

app/common/schema.go

@@ -1,7 +1,7 @@
 package app
 
 type Login struct { // login body struct
-	UsernameRaw string `json:"username" binding:"required"`
+	UsernameRaw string `json:"username"`
 	Username    Username
-	Password    string `json:"password" binding:"required"`
+	Password    string `json:"password"`
 }

app/ldap/utils.go

@@ -5,7 +5,6 @@ import (
 	"net/http"
 	"regexp"
 
-	"github.com/gin-gonic/gin"
 	"github.com/go-ldap/ldap/v3"
 
 	common "access-manager-api/app/common"
@@ -23,17 +22,17 @@ func LDAPEntryToGroup(entry *ldap.Entry) common.Group {
 	return common.Group{}
 }
 
-func ParseLDAPError(err error) gin.H {
+func ParseLDAPError(err error) map[string]any {
 	if err != nil {
 		LDAPerr := err.(*ldap.Error)
-		return gin.H{
+		return map[string]any{
 			"ok":      false,
 			"code":    LDAPerr.ResultCode,
 			"result":  ldap.LDAPResultCodeMap[LDAPerr.ResultCode],
 			"message": LDAPerr.Err.Error(),
 		}
 	} else {
-		return gin.H{
+		return map[string]any{
 			"ok":      true,
 			"code":    http.StatusOK,
 			"result":  "OK",

app/main.go

@@ -7,13 +7,13 @@ import (
 	"log"
 	"net/http"
 	"strconv"
+	"time"
 
 	common "access-manager-api/app/common"
 	"access-manager-api/app/pve"
+	paas "proxmoxaas-common-lib"
 
-	"github.com/gin-contrib/sessions"
-	"github.com/gin-contrib/sessions/cookie"
-	"github.com/gin-gonic/gin"
+	"github.com/gorilla/sessions"
 )
 
 type UserSession struct {
@@ -30,6 +30,7 @@ var Config common.Config
 var RootSession *UserSession
 var UserSessions map[string]*UserSession
 var Realms map[string]common.Realm
+var Store *sessions.CookieStore
 
 func Run() {
 	configPath := flag.String("config", "config.json", "path to config.json file")
@@ -38,14 +39,13 @@ func Run() {
 	// load config values
 	Config = common.GetConfig(*configPath)
 	// already exits if failed
-	log.Printf("Read in config from %s\n", *configPath)
+	log.Printf("[INFO] Read in config from %s\n", *configPath)
 
-	// setup gin
-	gin.SetMode(gin.ReleaseMode)
-	router := gin.Default()
+	// setup http router
+	router := http.NewServeMux()
 
 	// setup api auth cookies
-	SetupAPISessionStore(router, &Config)
+	SetupAPISessionStore(&Config)
 
 	// setup root api token
 	client, code, err := pve.NewClientFromAPIToken(Config.PVE, Config.PVE.Token)
@@ -63,35 +63,33 @@ func Run() {
 	// make global session map
 	UserSessions = make(map[string]*UserSession)
 
-	router.GET("/version", func(c *gin.Context) {
-		c.JSON(http.StatusOK, gin.H{"version": Version})
+	router.HandleFunc("GET /version", func(w http.ResponseWriter, r *http.Request) {
+		paas.HTTPWriteJson(w, http.StatusOK, map[string]any{"version": Version})
 	})
 
-	router.POST("/ticket", POST_Ticket)
-	router.DELETE("/ticket", DELETE_Ticket)
-	router.GET("/pools/:poolid", GET_Pool)
-	router.POST("/pools/:poolid", POST_Pool)
-	router.DELETE("/pools/:poolid", DELETE_Pool)
-	router.GET("/groups/:groupname", GET_Group)
-	router.POST("/groups/:groupname", POST_Group)
-	router.DELETE("/groups/:groupname", DELETE_Group)
-	router.POST("/pools/:poolid/groups/:groupname", POST_Pool_Group)
-	router.DELETE("/pools/:poolid/groups/:groupname")
-	router.GET("/users/:username", GET_User)
-	router.POST("/users/:username", POST_User)
-	router.DELETE("/users/:username", DELETE_User)
-	router.POST("/groups/:groupname/users/:username", POST_Group_User)
-	router.DELETE("/groups/:groupname/users/:username", DELETE_Group_User)
+	router.HandleFunc("POST /ticket", POST_Ticket)
+	router.HandleFunc("DELETE /ticket", DELETE_Ticket)
+	router.HandleFunc("GET /pools/{poolid}", GET_Pool)
+	router.HandleFunc("POST /pools/{poolid}", POST_Pool)
+	router.HandleFunc("DELETE /pools/{poolid}", DELETE_Pool)
+	router.HandleFunc("GET /groups/{groupname}", GET_Group)
+	router.HandleFunc("POST /groups/{groupname}", POST_Group)
+	router.HandleFunc("DELETE /groups/{groupname}", DELETE_Group)
+	router.HandleFunc("POST /pools/{poolid}/groups/{groupname}", POST_Pool_Group)
+	router.HandleFunc("DELETE /pools/{poolid}/groups/{groupname}", DELETE_Pool_Group)
+	router.HandleFunc("GET /users/{username}", GET_User)
+	router.HandleFunc("POST /users/{username}", POST_User)
+	router.HandleFunc("DELETE /users/{username}", DELETE_User)
+	router.HandleFunc("POST /groups/{groupname}/users/{username}", POST_Group_User)
+	router.HandleFunc("DELETE /groups/{groupname}/users/{username}", DELETE_Group_User)
 
-	log.Printf("Starting Access Manager API on port %s\n", strconv.Itoa(Config.ListenPort))
+	server := LoggingMiddleware(router)
 
-	err = router.Run("0.0.0.0:" + strconv.Itoa(Config.ListenPort))
-	if err != nil {
-		log.Fatalf("Error starting router: %s", err.Error())
-	}
+	log.Printf("[INFO] starting API listening on 0.0.0.0:%d", Config.ListenPort)
+	log.Fatalf("[ERR ] Error starting router: %s", http.ListenAndServe("0.0.0.0:"+strconv.Itoa(Config.ListenPort), server))
 }
 
-func SetupAPISessionStore(router *gin.Engine, config *common.Config) {
+func SetupAPISessionStore(config *common.Config) {
 	authKey := make([]byte, 32)
 	encrKey := make([]byte, 32)
 	n, _ := rand.Read(authKey) // rand Read never returns an error, always crashes on error
@@ -99,21 +97,29 @@ func SetupAPISessionStore(router *gin.Engine, config *common.Config) {
 	n, _ = rand.Read(encrKey) // rand Read never returns an error, always crashes on error
 	log.Printf("Generated cookie session encryption key of length %d\n", n)
 
-	store := cookie.NewStore(authKey, encrKey)
-	store.Options(sessions.Options{
+	Store = sessions.NewCookieStore(authKey, encrKey)
+	Store.Options = &sessions.Options{
 		Path:     config.SessionCookie.Path,
 		HttpOnly: config.SessionCookie.HttpOnly,
 		Secure:   config.SessionCookie.Secure,
 		MaxAge:   config.SessionCookie.MaxAge,
-	})
-	router.Use(sessions.Sessions(config.SessionCookieName, store))
+	}
 
 	log.Printf("Started cookie store (Name: %s Params: %+v)\n", config.SessionCookieName, config.SessionCookie)
 }
 
-func GetUserSessionFromContext(c *gin.Context) (*UserSession, int, error) {
-	session := sessions.Default(c)
-	SessionUUID := session.Get("SessionUUID")
+// get the cookie session from the request, returns a new session if the cookie is missing or invalid
+func GetCookieSession(r *http.Request) *sessions.Session {
+	session, err := Store.Get(r, Config.SessionCookieName)
+	if err != nil {
+		log.Printf("Error getting session cookie: %s\n", err.Error())
+	}
+	return session
+}
+
+func GetUserSessionFromRequest(r *http.Request) (*UserSession, int, error) {
+	session := GetCookieSession(r)
+	SessionUUID := session.Values["SessionUUID"]
 	if SessionUUID == nil {
 		return nil, http.StatusUnauthorized, fmt.Errorf("no auth session found")
 	}
@@ -121,3 +127,11 @@ func GetUserSessionFromContext(c *gin.Context) (*UserSession, int, error) {
 	usersession := UserSessions[uuid]
 	return usersession, http.StatusOK, nil
 }
+
+func LoggingMiddleware(next http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		start := time.Now()
+		next.ServeHTTP(w, r)
+		log.Printf("%s %s %s", r.Method, r.URL.Path, time.Since(start))
+	})
+}

app/routes.go

@@ -5,27 +5,31 @@ import (
 	ldap "access-manager-api/app/ldap"
 	"access-manager-api/app/localdb"
 	pve "access-manager-api/app/pve"
+	"encoding/json"
 	"fmt"
 	"net/http"
 	paas "proxmoxaas-common-lib"
 	"uuid"
 
-	"github.com/gin-contrib/sessions"
-	"github.com/gin-gonic/gin"
+	"github.com/gorilla/sessions"
 )
 
-func POST_Ticket(c *gin.Context) {
+func POST_Ticket(w http.ResponseWriter, r *http.Request) {
 	body := common.Login{}
-	err := c.ShouldBindJSON(&body)
-	if err != nil { // bad request from binding
-		c.JSON(http.StatusBadRequest, gin.H{"auth": false, "error": err.Error()})
+	err := json.NewDecoder(r.Body).Decode(&body)
+	if err != nil { // bad request from decoding
+		paas.HTTPWriteJson(w, http.StatusBadRequest, map[string]any{"auth": false, "error": err.Error()})
+		return
+	}
+	if body.UsernameRaw == "" || body.Password == "" { // username and password are required
+		paas.HTTPWriteJson(w, http.StatusBadRequest, map[string]any{"auth": false, "error": "missing required field username or password"})
 		return
 	}
 
 	// attempt to parse username
 	body.Username, err = paas.ParseUsername(body.UsernameRaw)
 	if err != nil { // username format incorrect
-		c.JSON(http.StatusBadRequest, gin.H{"auth": false, "error": err.Error()})
+		paas.HTTPWriteJson(w, http.StatusBadRequest, map[string]any{"auth": false, "error": err.Error()})
 		return
 	}
 	handler := Realms[body.Username.Realm].Type
@@ -35,7 +39,7 @@ func POST_Ticket(c *gin.Context) {
 	// always bind proxmox backend
 	PVEClient, code, err := pve.NewClientFromCredentials(Config.PVE, body.Username, body.Password)
 	if err != nil { // pve client failed to bind
-		c.JSON(code, gin.H{"auth": false, "error": err.Error()})
+		paas.HTTPWriteJson(w, code, map[string]any{"auth": false, "error": err.Error()})
 		return
 	}
 	userbackends.PVE = PVEClient
@@ -47,102 +51,102 @@ func POST_Ticket(c *gin.Context) {
 		config := Realms[body.Username.Realm].Config.(common.LDAPConfig)
 		LDAPClient, code, err := ldap.NewClientFromCredentials(config, body.Username, body.Password)
 		if err != nil { // ldap client failed to bind
-			c.JSON(code, gin.H{"auth": false, "error": err.Error()})
+			paas.HTTPWriteJson(w, code, map[string]any{"auth": false, "error": err.Error()})
 			return
 		}
 		userbackends.Realm.Name = body.Username.Realm
 		userbackends.Realm.Handler = LDAPClient
 	default:
-		c.JSON(code, gin.H{"auth": false, "error": fmt.Errorf("user realm %s is not supported", body.Username.Realm)})
+		paas.HTTPWriteJson(w, code, map[string]any{"auth": false, "error": fmt.Errorf("user realm %s is not supported", body.Username.Realm)})
 		return
 	}
 
 	// failing to load lcoaldb is a fatal error
 	userbackends.DB, code, err = localdb.NewClientFromCredentials(Config.LocalDB, body.Username, body.Password)
 	if err != nil {
-		c.JSON(code, gin.H{"auth": false, "error": err.Error()})
+		paas.HTTPWriteJson(w, code, map[string]any{"auth": false, "error": err.Error()})
 		return
 	}
 
 	// successful binding at this point
 	// create new session
-	session := sessions.Default(c)
+	session := GetCookieSession(r)
 	// create random uuid to map user to backends
 	uuid := uuid.NewV4()
 	// set uuid mapping in session
-	session.Set("SessionUUID", uuid.String())
+	session.Values["SessionUUID"] = uuid.String()
 	// set uuid mapping in LDAPSessions
 	UserSessions[uuid.String()] = &userbackends
 	// save the session
-	err = session.Save()
+	err = session.Save(r, w)
 	if err != nil {
-		c.JSON(http.StatusInternalServerError, gin.H{"auth": false, "error": err.Error()})
+		paas.HTTPWriteJson(w, http.StatusInternalServerError, map[string]any{"auth": false, "error": err.Error()})
 	} else {
 		// return successful auth
-		c.JSON(http.StatusOK, gin.H{"auth": true})
+		paas.HTTPWriteJson(w, http.StatusOK, map[string]any{"auth": true})
 	}
 }
 
-func DELETE_Ticket(c *gin.Context) {
+func DELETE_Ticket(w http.ResponseWriter, r *http.Request) {
 	// get session uuid from session cookie
-	session := sessions.Default(c)
-	SessionUUID := session.Get("SessionUUID")
+	session := GetCookieSession(r)
+	SessionUUID := session.Values["SessionUUID"]
 	if SessionUUID == nil {
-		c.JSON(http.StatusUnauthorized, gin.H{"auth": false})
+		paas.HTTPWriteJson(w, http.StatusUnauthorized, map[string]any{"auth": false})
 		return
 	}
 	uuid := SessionUUID.(string)
 
 	// delete uuid entry from user sessions
 	delete(UserSessions, uuid)                      // deletes uuid mapping
-	session.Options(sessions.Options{MaxAge: -1}) // set max age to -1 so session cookie is deleted
-	err := session.Save()                         // if save somehow fails, it should be ok since the uuid mapping is already deleted
+	session.Options = &sessions.Options{MaxAge: -1} // set max age to -1 so session cookie is deleted
+	err := session.Save(r, w)                       // if save somehow fails, it should be ok since the uuid mapping is already deleted
 	if err != nil {
-		c.JSON(http.StatusInternalServerError, gin.H{"auth": false})
+		paas.HTTPWriteJson(w, http.StatusInternalServerError, map[string]any{"auth": false})
 	} else {
-		c.JSON(http.StatusUnauthorized, gin.H{"auth": false})
+		paas.HTTPWriteJson(w, http.StatusUnauthorized, map[string]any{"auth": false})
 	}
 }
 
-func GET_Pool(c *gin.Context) {
-	poolid, ok := c.Params.Get("poolid")
-	if !ok {
-		c.JSON(http.StatusBadRequest, gin.H{"error": fmt.Errorf("missing required path parameter poolid")})
+func GET_Pool(w http.ResponseWriter, r *http.Request) {
+	poolid := r.PathValue("poolid")
+	if poolid == "" {
+		paas.HTTPWriteJson(w, http.StatusBadRequest, map[string]any{"error": fmt.Errorf("missing required path parameter poolid")})
 		return
 	}
 
-	backends, code, err := GetUserSessionFromContext(c)
+	backends, code, err := GetUserSessionFromRequest(r)
 	if err != nil {
-		c.JSON(code, gin.H{"error": err.Error()})
+		paas.HTTPWriteJson(w, code, map[string]any{"error": err.Error()})
 		return
 	}
 
 	pool, code, err := GetPool(backends, poolid)
 	if err != nil {
-		c.JSON(code, gin.H{"error": err.Error()})
+		paas.HTTPWriteJson(w, code, map[string]any{"error": err.Error()})
 	} else {
-		c.JSON(http.StatusOK, gin.H{"pool": pool})
+		paas.HTTPWriteJson(w, http.StatusOK, map[string]any{"pool": pool})
 	}
 }
 
-func POST_Pool(c *gin.Context) {
-	poolid, ok := c.Params.Get("poolid")
-	if !ok {
-		c.JSON(http.StatusBadRequest, gin.H{"error": fmt.Errorf("missing required path parameter poolid")})
+func POST_Pool(w http.ResponseWriter, r *http.Request) {
+	poolid := r.PathValue("poolid")
+	if poolid == "" {
+		paas.HTTPWriteJson(w, http.StatusBadRequest, map[string]any{"error": fmt.Errorf("missing required path parameter poolid")})
 		return
 	}
 
-	backends, code, err := GetUserSessionFromContext(c)
+	backends, code, err := GetUserSessionFromRequest(r)
 	if err != nil {
-		c.JSON(code, gin.H{"error": err.Error()})
+		paas.HTTPWriteJson(w, code, map[string]any{"error": err.Error()})
 		return
 	}
 
 	// read request body
 	pool := common.Pool{}
-	err = c.ShouldBindJSON(&pool)
-	if err != nil { // failed binding, usually missing user field
-		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+	err = json.NewDecoder(r.Body).Decode(&pool)
+	if err != nil { // failed decoding, usually malformed json
+		paas.HTTPWriteJson(w, http.StatusBadRequest, map[string]any{"error": err.Error()})
 		return
 	}
 
@@ -151,91 +155,91 @@ func POST_Pool(c *gin.Context) {
 	if code == http.StatusNotFound { // pool does not already exist, create new pool
 		code, err = NewPool(backends, poolid, pool)
 		if err != nil {
-			c.JSON(code, gin.H{"error": err.Error()})
+			paas.HTTPWriteJson(w, code, map[string]any{"error": err.Error()})
 		} else {
-			c.Status(http.StatusOK)
+			w.WriteHeader(http.StatusOK)
 		}
 	} else {
 		code, err = ModPool(backends, poolid, pool)
 		if err != nil {
-			c.JSON(code, gin.H{"error": err.Error()})
+			paas.HTTPWriteJson(w, code, map[string]any{"error": err.Error()})
 		} else {
-			c.Status(http.StatusOK)
+			w.WriteHeader(http.StatusOK)
 		}
 	}
 }
 
-func DELETE_Pool(c *gin.Context) {
-	poolid, ok := c.Params.Get("poolid")
-	if !ok {
-		c.JSON(http.StatusBadRequest, gin.H{"error": fmt.Errorf("missing required path parameter poolid")})
+func DELETE_Pool(w http.ResponseWriter, r *http.Request) {
+	poolid := r.PathValue("poolid")
+	if poolid == "" {
+		paas.HTTPWriteJson(w, http.StatusBadRequest, map[string]any{"error": fmt.Errorf("missing required path parameter poolid")})
 		return
 	}
 
-	backends, code, err := GetUserSessionFromContext(c)
+	backends, code, err := GetUserSessionFromRequest(r)
 	if err != nil {
-		c.JSON(code, gin.H{"error": err.Error()})
+		paas.HTTPWriteJson(w, code, map[string]any{"error": err.Error()})
 		return
 	}
 
 	code, err = DelPool(backends, poolid)
 	if err != nil {
-		c.JSON(code, gin.H{"error": err.Error()})
+		paas.HTTPWriteJson(w, code, map[string]any{"error": err.Error()})
 	} else {
-		c.Status(http.StatusOK)
+		w.WriteHeader(http.StatusOK)
 	}
 }
 
-func GET_Group(c *gin.Context) {
-	groupname_str, ok := c.Params.Get("groupname")
-	if !ok {
-		c.JSON(http.StatusBadRequest, gin.H{"error": fmt.Errorf("missing required path parameter poolid")})
+func GET_Group(w http.ResponseWriter, r *http.Request) {
+	groupname_str := r.PathValue("groupname")
+	if groupname_str == "" {
+		paas.HTTPWriteJson(w, http.StatusBadRequest, map[string]any{"error": fmt.Errorf("missing required path parameter poolid")})
 		return
 	}
 
 	groupname, err := common.ParseGroupname(groupname_str)
 	if err != nil {
-		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		paas.HTTPWriteJson(w, http.StatusBadRequest, map[string]any{"error": err.Error()})
 	}
 
-	backends, code, err := GetUserSessionFromContext(c)
+	backends, code, err := GetUserSessionFromRequest(r)
 	if err != nil {
-		c.JSON(code, gin.H{"error": err.Error()})
+		paas.HTTPWriteJson(w, code, map[string]any{"error": err.Error()})
 		return
 	}
 
 	group, code, err := GetGroup(backends, groupname)
 	if err != nil {
-		c.JSON(code, gin.H{"error": err.Error()})
+		paas.HTTPWriteJson(w, code, map[string]any{"error": err.Error()})
 	} else {
-		c.JSON(http.StatusOK, gin.H{"group": group})
+		paas.HTTPWriteJson(w, http.StatusOK, map[string]any{"group": group})
 	}
 }
 
-func POST_Group(c *gin.Context) {
-	groupname_str, ok := c.Params.Get("groupname")
-	if !ok {
-		c.JSON(http.StatusBadRequest, gin.H{"error": fmt.Errorf("missing required path parameter groupname")})
+func POST_Group(w http.ResponseWriter, r *http.Request) {
+	groupname_str := r.PathValue("groupname")
+	if groupname_str == "" {
+		paas.HTTPWriteJson(w, http.StatusBadRequest, map[string]any{"error": fmt.Errorf("missing required path parameter groupname")})
 		return
 	}
 
 	groupname, err := paas.ParseGroupname(groupname_str)
 	if err != nil {
-		c.JSON(http.StatusBadRequest, gin.H{"error": err})
+		paas.HTTPWriteJson(w, http.StatusBadRequest, map[string]any{"error": err})
 		return
 	}
 
-	backends, code, err := GetUserSessionFromContext(c)
+	backends, code, err := GetUserSessionFromRequest(r)
 	if err != nil {
-		c.JSON(code, gin.H{"error": err.Error()})
+		paas.HTTPWriteJson(w, code, map[string]any{"error": err.Error()})
 		return
 	}
 
 	// read request body
 	group := common.Group{}
-	err = c.ShouldBindJSON(&group)
-	if err != nil { // failed binding, usually missing user field
-		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+	err = json.NewDecoder(r.Body).Decode(&group)
+	if err != nil { // failed decoding, usually malformed json
+		paas.HTTPWriteJson(w, http.StatusBadRequest, map[string]any{"error": err.Error()})
 		return
 	}
 
@@ -244,163 +248,163 @@ func POST_Group(c *gin.Context) {
 	if code == http.StatusNotFound { // group does not already exist, create new group
 		code, err = NewGroup(backends, groupname, group)
 		if err != nil {
-			c.JSON(code, gin.H{"error": err.Error()})
+			paas.HTTPWriteJson(w, code, map[string]any{"error": err.Error()})
 		} else {
-			c.Status(http.StatusOK)
+			w.WriteHeader(http.StatusOK)
 		}
 	} else {
 		code, err = ModGroup(backends, groupname, group)
 		if err != nil {
-			c.JSON(code, gin.H{"error": err.Error()})
+			paas.HTTPWriteJson(w, code, map[string]any{"error": err.Error()})
 		} else {
-			c.Status(http.StatusOK)
+			w.WriteHeader(http.StatusOK)
 		}
 	}
 }
 
-func DELETE_Group(c *gin.Context) {
-	groupname_str, ok := c.Params.Get("groupname")
-	if !ok {
-		c.JSON(http.StatusBadRequest, gin.H{"error": fmt.Errorf("missing required path parameter groupname")})
+func DELETE_Group(w http.ResponseWriter, r *http.Request) {
+	groupname_str := r.PathValue("groupname")
+	if groupname_str == "" {
+		paas.HTTPWriteJson(w, http.StatusBadRequest, map[string]any{"error": fmt.Errorf("missing required path parameter groupname")})
 		return
 	}
 
 	groupname, err := paas.ParseGroupname(groupname_str)
 	if err != nil {
-		c.JSON(http.StatusBadRequest, gin.H{"error": err})
+		paas.HTTPWriteJson(w, http.StatusBadRequest, map[string]any{"error": err})
 		return
 	}
 
-	backends, code, err := GetUserSessionFromContext(c)
+	backends, code, err := GetUserSessionFromRequest(r)
 	if err != nil {
-		c.JSON(code, gin.H{"error": err.Error()})
+		paas.HTTPWriteJson(w, code, map[string]any{"error": err.Error()})
 		return
 	}
 
 	code, err = DelGroup(backends, groupname)
 	if err != nil {
-		c.JSON(code, gin.H{"error": err.Error()})
+		paas.HTTPWriteJson(w, code, map[string]any{"error": err.Error()})
 	} else {
-		c.Status(http.StatusOK)
+		w.WriteHeader(http.StatusOK)
 	}
 }
 
-func POST_Pool_Group(c *gin.Context) {
-	poolid, ok := c.Params.Get("poolid")
-	if !ok {
-		c.JSON(http.StatusBadRequest, gin.H{"error": fmt.Errorf("missing required path parameter poolid")})
+func POST_Pool_Group(w http.ResponseWriter, r *http.Request) {
+	poolid := r.PathValue("poolid")
+	if poolid == "" {
+		paas.HTTPWriteJson(w, http.StatusBadRequest, map[string]any{"error": fmt.Errorf("missing required path parameter poolid")})
 		return
 	}
 
-	groupname_str, ok := c.Params.Get("groupname")
-	if !ok {
-		c.JSON(http.StatusBadRequest, gin.H{"error": fmt.Errorf("missing required path parameter groupname")})
+	groupname_str := r.PathValue("groupname")
+	if groupname_str == "" {
+		paas.HTTPWriteJson(w, http.StatusBadRequest, map[string]any{"error": fmt.Errorf("missing required path parameter groupname")})
 		return
 	}
 
 	groupname, err := paas.ParseGroupname(groupname_str)
 	if err != nil {
-		c.JSON(http.StatusBadRequest, gin.H{"error": err})
+		paas.HTTPWriteJson(w, http.StatusBadRequest, map[string]any{"error": err})
 		return
 	}
 
-	backends, code, err := GetUserSessionFromContext(c)
+	backends, code, err := GetUserSessionFromRequest(r)
 	if err != nil {
-		c.JSON(code, gin.H{"error": err.Error()})
+		paas.HTTPWriteJson(w, code, map[string]any{"error": err.Error()})
 		return
 	}
 
 	code, err = AddGroupToPool(backends, groupname, poolid)
 	if err != nil {
-		c.JSON(code, gin.H{"error": err.Error()})
+		paas.HTTPWriteJson(w, code, map[string]any{"error": err.Error()})
 	} else {
-		c.Status(http.StatusOK)
+		w.WriteHeader(http.StatusOK)
 	}
 }
 
-func DELETE_Pool_Group(c *gin.Context) {
-	poolid, ok := c.Params.Get("poolid")
-	if !ok {
-		c.JSON(http.StatusBadRequest, gin.H{"error": fmt.Errorf("missing required path parameter poolid")})
+func DELETE_Pool_Group(w http.ResponseWriter, r *http.Request) {
+	poolid := r.PathValue("poolid")
+	if poolid == "" {
+		paas.HTTPWriteJson(w, http.StatusBadRequest, map[string]any{"error": fmt.Errorf("missing required path parameter poolid")})
 		return
 	}
 
-	groupname_str, ok := c.Params.Get("groupname")
-	if !ok {
-		c.JSON(http.StatusBadRequest, gin.H{"error": fmt.Errorf("missing required path parameter groupname")})
+	groupname_str := r.PathValue("groupname")
+	if groupname_str == "" {
+		paas.HTTPWriteJson(w, http.StatusBadRequest, map[string]any{"error": fmt.Errorf("missing required path parameter groupname")})
 		return
 	}
 
 	groupname, err := paas.ParseGroupname(groupname_str)
 	if err != nil {
-		c.JSON(http.StatusBadRequest, gin.H{"error": err})
+		paas.HTTPWriteJson(w, http.StatusBadRequest, map[string]any{"error": err})
 		return
 	}
 
-	backends, code, err := GetUserSessionFromContext(c)
+	backends, code, err := GetUserSessionFromRequest(r)
 	if err != nil {
-		c.JSON(code, gin.H{"error": err.Error()})
+		paas.HTTPWriteJson(w, code, map[string]any{"error": err.Error()})
 		return
 	}
 
 	code, err = DelGroupFromPool(backends, groupname, poolid)
 	if err != nil {
-		c.JSON(code, gin.H{"error": err.Error()})
+		paas.HTTPWriteJson(w, code, map[string]any{"error": err.Error()})
 	} else {
-		c.Status(http.StatusOK)
+		w.WriteHeader(http.StatusOK)
 	}
 }
 
-func GET_User(c *gin.Context) {
-	username_str, ok := c.Params.Get("username")
-	if !ok {
-		c.JSON(http.StatusBadRequest, gin.H{"error": fmt.Errorf("missing required path parameter poolid")})
+func GET_User(w http.ResponseWriter, r *http.Request) {
+	username_str := r.PathValue("username")
+	if username_str == "" {
+		paas.HTTPWriteJson(w, http.StatusBadRequest, map[string]any{"error": fmt.Errorf("missing required path parameter poolid")})
 		return
 	}
 
 	username, err := common.ParseUsername(username_str)
 	if err != nil {
-		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		paas.HTTPWriteJson(w, http.StatusBadRequest, map[string]any{"error": err.Error()})
 	}
 
-	backends, code, err := GetUserSessionFromContext(c)
+	backends, code, err := GetUserSessionFromRequest(r)
 	if err != nil {
-		c.JSON(code, gin.H{"error": err.Error()})
+		paas.HTTPWriteJson(w, code, map[string]any{"error": err.Error()})
 		return
 	}
 
 	user, code, err := GetUser(backends, username)
 	if err != nil {
-		c.JSON(code, gin.H{"error": err.Error()})
+		paas.HTTPWriteJson(w, code, map[string]any{"error": err.Error()})
 	} else {
-		c.JSON(http.StatusOK, gin.H{"user": user})
+		paas.HTTPWriteJson(w, http.StatusOK, map[string]any{"user": user})
 	}
 }
 
-func POST_User(c *gin.Context) {
-	username_str, ok := c.Params.Get("username")
-	if !ok {
-		c.JSON(http.StatusBadRequest, gin.H{"error": fmt.Errorf("missing required path parameter groupname")})
+func POST_User(w http.ResponseWriter, r *http.Request) {
+	username_str := r.PathValue("username")
+	if username_str == "" {
+		paas.HTTPWriteJson(w, http.StatusBadRequest, map[string]any{"error": fmt.Errorf("missing required path parameter groupname")})
 		return
 	}
 
 	username, err := paas.ParseUsername(username_str)
 	if err != nil {
-		c.JSON(http.StatusBadRequest, gin.H{"error": err})
+		paas.HTTPWriteJson(w, http.StatusBadRequest, map[string]any{"error": err})
 		return
 	}
 
-	backends, code, err := GetUserSessionFromContext(c)
+	backends, code, err := GetUserSessionFromRequest(r)
 	if err != nil {
-		c.JSON(code, gin.H{"error": err.Error()})
+		paas.HTTPWriteJson(w, code, map[string]any{"error": err.Error()})
 		return
 	}
 
 	// read request body
 	user := common.User{}
-	err = c.ShouldBindJSON(&user)
-	if err != nil { // failed binding, usually missing user field
-		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+	err = json.NewDecoder(r.Body).Decode(&user)
+	if err != nil { // failed decoding, usually malformed json
+		paas.HTTPWriteJson(w, http.StatusBadRequest, map[string]any{"error": err.Error()})
 		return
 	}
 
@@ -409,121 +413,121 @@ func POST_User(c *gin.Context) {
 	if code == http.StatusNotFound { // user does not already exist, create new user
 		code, err = NewUser(backends, username, user)
 		if err != nil {
-			c.JSON(code, gin.H{"error": err.Error()})
+			paas.HTTPWriteJson(w, code, map[string]any{"error": err.Error()})
 		} else {
-			c.Status(http.StatusOK)
+			w.WriteHeader(http.StatusOK)
 		}
 	} else {
 		code, err = ModUser(backends, username, user)
 		if err != nil {
-			c.JSON(code, gin.H{"error": err.Error()})
+			paas.HTTPWriteJson(w, code, map[string]any{"error": err.Error()})
 		} else {
-			c.Status(http.StatusOK)
+			w.WriteHeader(http.StatusOK)
 		}
 	}
 }
 
-func DELETE_User(c *gin.Context) {
-	username_str, ok := c.Params.Get("username")
-	if !ok {
-		c.JSON(http.StatusBadRequest, gin.H{"error": fmt.Errorf("missing required path parameter groupname")})
+func DELETE_User(w http.ResponseWriter, r *http.Request) {
+	username_str := r.PathValue("username")
+	if username_str == "" {
+		paas.HTTPWriteJson(w, http.StatusBadRequest, map[string]any{"error": fmt.Errorf("missing required path parameter groupname")})
 		return
 	}
 
 	username, err := paas.ParseUsername(username_str)
 	if err != nil {
-		c.JSON(http.StatusBadRequest, gin.H{"error": err})
+		paas.HTTPWriteJson(w, http.StatusBadRequest, map[string]any{"error": err})
 		return
 	}
 
-	backends, code, err := GetUserSessionFromContext(c)
+	backends, code, err := GetUserSessionFromRequest(r)
 	if err != nil {
-		c.JSON(code, gin.H{"error": err.Error()})
+		paas.HTTPWriteJson(w, code, map[string]any{"error": err.Error()})
 		return
 	}
 
 	code, err = DelUser(backends, username)
 	if err != nil {
-		c.JSON(code, gin.H{"error": err.Error()})
+		paas.HTTPWriteJson(w, code, map[string]any{"error": err.Error()})
 	} else {
-		c.Status(http.StatusOK)
+		w.WriteHeader(http.StatusOK)
 	}
 }
 
-func POST_Group_User(c *gin.Context) {
-	groupname_str, ok := c.Params.Get("groupname")
-	if !ok {
-		c.JSON(http.StatusBadRequest, gin.H{"error": fmt.Errorf("missing required path parameter groupname")})
+func POST_Group_User(w http.ResponseWriter, r *http.Request) {
+	groupname_str := r.PathValue("groupname")
+	if groupname_str == "" {
+		paas.HTTPWriteJson(w, http.StatusBadRequest, map[string]any{"error": fmt.Errorf("missing required path parameter groupname")})
 		return
 	}
 
-	username_str, ok := c.Params.Get("username")
-	if !ok {
-		c.JSON(http.StatusBadRequest, gin.H{"error": fmt.Errorf("missing required path parameter username")})
+	username_str := r.PathValue("username")
+	if username_str == "" {
+		paas.HTTPWriteJson(w, http.StatusBadRequest, map[string]any{"error": fmt.Errorf("missing required path parameter username")})
 		return
 	}
 
 	groupname, err := paas.ParseGroupname(groupname_str)
 	if err != nil {
-		c.JSON(http.StatusBadRequest, gin.H{"error": err})
+		paas.HTTPWriteJson(w, http.StatusBadRequest, map[string]any{"error": err})
 		return
 	}
 
 	username, err := paas.ParseUsername(username_str)
 	if err != nil {
-		c.JSON(http.StatusBadRequest, gin.H{"error": err})
+		paas.HTTPWriteJson(w, http.StatusBadRequest, map[string]any{"error": err})
 		return
 	}
 
-	backends, code, err := GetUserSessionFromContext(c)
+	backends, code, err := GetUserSessionFromRequest(r)
 	if err != nil {
-		c.JSON(code, gin.H{"error": err.Error()})
+		paas.HTTPWriteJson(w, code, map[string]any{"error": err.Error()})
 		return
 	}
 
 	code, err = AddUserToGroup(backends, username, groupname)
 	if err != nil {
-		c.JSON(code, gin.H{"error": err.Error()})
+		paas.HTTPWriteJson(w, code, map[string]any{"error": err.Error()})
 	} else {
-		c.Status(http.StatusOK)
+		w.WriteHeader(http.StatusOK)
 	}
 }
 
-func DELETE_Group_User(c *gin.Context) {
-	groupname_str, ok := c.Params.Get("groupname")
-	if !ok {
-		c.JSON(http.StatusBadRequest, gin.H{"error": fmt.Errorf("missing required path parameter groupname")})
+func DELETE_Group_User(w http.ResponseWriter, r *http.Request) {
+	groupname_str := r.PathValue("groupname")
+	if groupname_str == "" {
+		paas.HTTPWriteJson(w, http.StatusBadRequest, map[string]any{"error": fmt.Errorf("missing required path parameter groupname")})
 		return
 	}
 
-	username_str, ok := c.Params.Get("username")
-	if !ok {
-		c.JSON(http.StatusBadRequest, gin.H{"error": fmt.Errorf("missing required path parameter username")})
+	username_str := r.PathValue("username")
+	if username_str == "" {
+		paas.HTTPWriteJson(w, http.StatusBadRequest, map[string]any{"error": fmt.Errorf("missing required path parameter username")})
 		return
 	}
 
 	groupname, err := paas.ParseGroupname(groupname_str)
 	if err != nil {
-		c.JSON(http.StatusBadRequest, gin.H{"error": err})
+		paas.HTTPWriteJson(w, http.StatusBadRequest, map[string]any{"error": err})
 		return
 	}
 
 	username, err := paas.ParseUsername(username_str)
 	if err != nil {
-		c.JSON(http.StatusBadRequest, gin.H{"error": err})
+		paas.HTTPWriteJson(w, http.StatusBadRequest, map[string]any{"error": err})
 		return
 	}
 
-	backends, code, err := GetUserSessionFromContext(c)
+	backends, code, err := GetUserSessionFromRequest(r)
 	if err != nil {
-		c.JSON(code, gin.H{"error": err.Error()})
+		paas.HTTPWriteJson(w, code, map[string]any{"error": err.Error()})
 		return
 	}
 
 	code, err = DelUserFromGroup(backends, username, groupname)
 	if err != nil {
-		c.JSON(code, gin.H{"error": err.Error()})
+		paas.HTTPWriteJson(w, code, map[string]any{"error": err.Error()})
 	} else {
-		c.Status(http.StatusOK)
+		w.WriteHeader(http.StatusOK)
 	}
 }

go.mod

@@ -1,12 +1,11 @@
 module access-manager-api
 
-go 1.27.0
+go 1.27.3
 
 require (
-	github.com/gin-contrib/sessions v1.1.0
-	github.com/gin-gonic/gin v1.12.0
-	github.com/go-ldap/ldap/v3 v3.4.14
-	github.com/luthermonson/go-proxmox v0.8.1
+	github.com/go-ldap/ldap/v3 v3.4.15
+	github.com/gorilla/sessions v1.4.0
+	github.com/luthermonson/go-proxmox v0.8.2
 	proxmoxaas-common-lib v0.0.0
 )
 
@@ -15,43 +14,15 @@ replace proxmoxaas-common-lib => ./proxmoxaas-common-lib
 require (
 	github.com/Azure/go-ntlmssp v0.1.1 // indirect
 	github.com/buger/goterm v1.0.4 // indirect
-	github.com/bytedance/gopkg v0.1.4 // indirect
-	github.com/bytedance/sonic v1.15.2 // indirect
-	github.com/bytedance/sonic/loader v0.5.2 // indirect
-	github.com/cloudwego/base64x v0.1.7 // indirect
 	github.com/diskfs/go-diskfs v1.9.4 // indirect
 	github.com/djherbis/times v1.6.0 // indirect
-	github.com/gabriel-vasile/mimetype v1.4.15 // indirect
-	github.com/gin-contrib/sse v1.1.1 // indirect
 	github.com/go-asn1-ber/asn1-ber v1.5.8 // indirect
-	github.com/go-playground/locales v0.14.1 // indirect
-	github.com/go-playground/universal-translator v0.18.1 // indirect
-	github.com/go-playground/validator/v10 v10.30.3 // indirect
-	github.com/goccy/go-json v0.10.6 // indirect
-	github.com/goccy/go-yaml v1.19.2 // indirect
 	github.com/google/uuid v1.6.0 // indirect
-	github.com/gorilla/context v1.1.2 // indirect
 	github.com/gorilla/securecookie v1.1.2 // indirect
-	github.com/gorilla/sessions v1.4.0 // indirect
 	github.com/gorilla/websocket v1.5.3 // indirect
 	github.com/jinzhu/copier v0.4.0 // indirect
-	github.com/json-iterator/go v1.1.12 // indirect
-	github.com/klauspost/cpuid/v2 v2.4.0 // indirect
-	github.com/leodido/go-urn v1.5.0 // indirect
 	github.com/magefile/mage v1.17.2 // indirect
-	github.com/mattn/go-isatty v0.0.24 // indirect
-	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
-	github.com/modern-go/reflect2 v1.0.2 // indirect
-	github.com/pelletier/go-toml/v2 v2.4.3 // indirect
-	github.com/quic-go/qpack v0.6.0 // indirect
-	github.com/quic-go/quic-go v0.61.0 // indirect
-	github.com/twitchyliquid64/golang-asm v0.15.1 // indirect
-	github.com/ugorji/go/codec v1.3.2 // indirect
-	go.mongodb.org/mongo-driver/v2 v2.8.1 // indirect
-	golang.org/x/arch v0.30.0 // indirect
-	golang.org/x/crypto v0.55.0 // indirect
-	golang.org/x/net v0.58.0 // indirect
-	golang.org/x/sys v0.47.0 // indirect
-	golang.org/x/text v0.41.0 // indirect
-	google.golang.org/protobuf v1.36.12 // indirect
+	github.com/stretchr/testify v1.11.1 // indirect
+	golang.org/x/crypto v0.58.0 // indirect
+	golang.org/x/sys v0.49.0 // indirect
 )