implement pool group and user get routes,

improvements to http return codes,
add localdb backend handler

app/common/config.go

@@ -16,6 +16,12 @@ type PVEConfig struct {
 	PAASClientRole string `json:"paas-client-role"`
 }
 
+type LDAPConfig struct {
+	BaseDN   string `json:""`
+	LdapURL  string
+	StartTLS bool
+}
+
 type Config struct {
 	ListenPort        int    `json:"listenPort"`
 	SessionCookieName string `json:"sessionCookieName"`

app/common/types.go

@@ -4,12 +4,15 @@ import paas "proxmoxaas-common-lib"
 
 type Backend interface {
 	NewPool(poolname string) (int, error)
+	GetPool(poolname string) (Pool, []string, int, error) // []string members
 	DelPool(poolname string) (int, error)
 	NewGroup(groupname Groupname) (int, error)
+	GetGroup(groupname Groupname) (Group, []string, int, error) // []string members
 	DelGroup(groupname Groupname) (int, error)
 	AddGroupToPool(groupname Groupname, poolname string) (int, error)
 	DelGroupFromPool(groupname Groupname, poolname string) (int, error)
 	NewUser(username Username, user User) (int, error)
+	GetUser(username Username) (User, int, error)
 	DelUser(username Username) (int, error)
 	AddUserToGroup(username Username, groupname Groupname) (int, error)
 	DelUserFromGroup(username Username, groupname Groupname) (int, error)
@@ -28,3 +31,11 @@ type SimpleLimit = paas.SimpleLimit
 type MatchResource = paas.MatchResource
 type MatchLimit = paas.MatchLimit
 type ResourceTemplate = paas.ResourceTemplate
+
+func ParseGroupname(groupname string) (Groupname, error) {
+	return paas.ParseGroupname(groupname)
+}
+
+func ParseUsername(username string) (Username, error) {
+	return paas.ParseUsername(username)
+}

app/ldap/ldap.go

@@ -13,12 +13,12 @@ import (
 
 // LDAPClient wrapper struct containing the connection, baseDN, peopleDN, and groupsDN
 type LDAPClient struct {
-	config *LDAPConfig
+	config *common.LDAPConfig
 	client *ldap.Conn
 }
 
 // returns a new LDAPClient from the config
-func NewClientFromCredentials(config LDAPConfig, username common.Username, password string) (*LDAPClient, int, error) {
+func NewClientFromCredentials(config common.LDAPConfig, username common.Username, password string) (*LDAPClient, int, error) {
 	LDAPConn, err := ldap.DialURL(config.LdapURL)
 	if err != nil {
 		return nil, http.StatusInternalServerError, err
@@ -65,6 +65,7 @@ func (l LDAPClient) GetUser(username common.Username) (common.User, int, error)
 	entry := searchResponse.Entries[0]
 
 	user = LDAPEntryToUser(entry)
+	user.Username = username
 
 	return user, http.StatusOK, nil
 }
@@ -146,8 +147,9 @@ func (l LDAPClient) DelUser(username common.Username) (int, error) {
 	return http.StatusOK, nil
 }
 
-func (l LDAPClient) GetGroup(groupname common.Groupname) (common.Group, int, error) {
+func (l LDAPClient) GetGroup(groupname common.Groupname) (common.Group, []string, int, error) {
 	group := common.Group{}
+	members := []string{}
 
 	searchRequest := ldap.NewSearchRequest( //  setup search for user by uid
 		fmt.Sprintf("cn=%s,ou=groups,%s", groupname.GroupID, l.config.BaseDN), // The base dn to search
@@ -159,13 +161,18 @@ func (l LDAPClient) GetGroup(groupname common.Groupname) (common.Group, int, err
 
 	searchResponse, err := l.client.Search(searchRequest) // perform search
 	if err != nil {
-		return group, http.StatusBadRequest, err
+		return group, members, http.StatusBadRequest, err
 	}
 
 	entry := searchResponse.Entries[0]
 	group = LDAPEntryToGroup(entry)
-
+	group.Groupname = groupname
-	return group, http.StatusOK, nil
+	for _, member := range entry.GetAttributeValues("member") {
+		if member != "" {
+			members = append(members, member)
+		}
+	}
+	return group, members, http.StatusOK, nil
 }
 
 func (l LDAPClient) NewGroup(groupname common.Groupname) (int, error) {
@@ -261,12 +268,19 @@ func (l LDAPClient) DelUserFromGroup(username common.Username, groupname common.
 func (l LDAPClient) NewPool(poolname string) (int, error) {
 	return http.StatusNotImplemented, fmt.Errorf("ldap does not implement pools")
 }
+
+func (l LDAPClient) GetPool(poolname string) (common.Pool, []string, int, error) {
+	return common.Pool{}, []string{}, http.StatusNotImplemented, fmt.Errorf("ldap does not implement pools")
+}
+
 func (l LDAPClient) DelPool(poolname string) (int, error) {
 	return http.StatusNotImplemented, fmt.Errorf("ldap does not implement pools")
 }
+
 func (l LDAPClient) AddGroupToPool(groupname common.Groupname, poolname string) (int, error) {
 	return http.StatusNotImplemented, fmt.Errorf("ldap does not implement pools")
 }
+
 func (l LDAPClient) DelGroupFromPool(groupname common.Groupname, poolname string) (int, error) {
 	return http.StatusNotImplemented, fmt.Errorf("ldap does not implement pools")
 }

app/ldap/utils.go

@@ -1,18 +1,16 @@
 package ldap
 
 import (
+	"fmt"
+	"net/http"
+	"regexp"
+
 	"github.com/gin-gonic/gin"
 	"github.com/go-ldap/ldap/v3"
 
 	common "user-manager-api/app/common"
 )
 
-type LDAPConfig struct {
-	BaseDN   string
-	LdapURL  string
-	StartTLS bool
-}
-
 func LDAPEntryToUser(entry *ldap.Entry) common.User {
 	return common.User{
 		CN:   entry.GetAttributeValue("cn"),
@@ -37,9 +35,18 @@ func ParseLDAPError(err error) gin.H {
 	} else {
 		return gin.H{
 			"ok":      true,
-			"code":    200,
+			"code":    http.StatusOK,
 			"result":  "OK",
 			"message": "",
 		}
 	}
 }
+
+func ExtractUIDFromUserDN(dn string) (string, error) {
+	m := regexp.MustCompilePOSIX("uid=([[:alnum:]]+)")
+	x := m.FindStringSubmatch(dn)
+	if len(x) != 2 {
+		return "", fmt.Errorf("could not find uid in dn %s", dn)
+	}
+	return x[1], nil
+}

app/localdb/localdb.go

@@ -0,0 +1,46 @@
+package localdb
+
+import (
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"os"
+	common "user-manager-api/app/common"
+)
+
+type DB struct {
+	data map[string]common.Pool
+}
+
+func LoadDB(localDBPath string) (DB, error) {
+	db := DB{}
+	content, err := os.ReadFile(localDBPath)
+	if err != nil {
+		//log.Fatal("Error when opening file: ", err)
+		return db, err
+	}
+	err = json.Unmarshal(content, &db.data)
+	if err != nil {
+		//log.Fatal("Error during Unmarshal(): ", err)
+		return db, err
+	}
+	return db, nil
+}
+
+func SaveDB(localDBPath string, db DB) error {
+	json, err := json.Marshal(db.data)
+	if err != nil {
+		return err
+	}
+	err = os.WriteFile(localDBPath, []byte(json), 0644)
+	return err
+}
+
+func (localdb DB) GetPool(poolname string) (common.Pool, []string, int, error) {
+	pool := common.Pool{}
+	pool, ok := localdb.data[poolname]
+	if !ok {
+		return pool, []string{}, http.StatusNotFound, fmt.Errorf("Pool %s not in localdb", poolname)
+	}
+	return pool, []string{}, http.StatusOK, nil
+}

app/main.go

@@ -12,6 +12,7 @@ import (
 	paas "proxmoxaas-common-lib"
 	common "user-manager-api/app/common"
 	ldap "user-manager-api/app/ldap"
+	localdb "user-manager-api/app/localdb"
 	pve "user-manager-api/app/pve"
 
 	"github.com/gin-contrib/sessions"
@@ -26,7 +27,7 @@ var Config common.Config
 var UserSessions map[string]*UserSession
 var Realms map[string]Realm
 
-func Run(configPath *string) {
+func Run(configPath *string, localDBPath *string) {
 	// load config values
 	var err error
 	Config, err = common.GetConfig(*configPath)
@@ -35,6 +36,13 @@ func Run(configPath *string) {
 	}
 	log.Printf("Read in config from %s\n", *configPath)
 
+	// load localdb
+	db, err := localdb.LoadDB(*localDBPath)
+	if err != nil {
+		log.Fatalf("Error when reading localdb file: %s\n", err)
+	}
+	log.Printf("Read in localdb from %s\n", *localDBPath)
+
 	// setup router
 	gin.SetMode(gin.ReleaseMode)
 	router := SetupAPISessionStore(&Config)
@@ -47,7 +55,7 @@ func Run(configPath *string) {
 	UserSessions = make(map[string]*UserSession)
 
 	router.GET("/version", func(c *gin.Context) {
-		c.JSON(200, gin.H{"version": Version})
+		c.JSON(http.StatusOK, gin.H{"version": Version})
 	})
 
 	router.POST("/ticket", func(c *gin.Context) {
@@ -78,7 +86,7 @@ func Run(configPath *string) {
 
 		// bind ldap backend if backend is ldap
 		if handler == "ldap" {
-			config := Realms[body.Username.Realm].Config.(ldap.LDAPConfig)
+			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()})
@@ -88,6 +96,8 @@ func Run(configPath *string) {
 			userbackends.Realm.Handler = LDAPClient
 		}
 
+		userbackends.DB = &db
+
 		// successful binding at this point
 		// create new session
 		session := sessions.Default(c)
@@ -120,6 +130,27 @@ func Run(configPath *string) {
 		c.JSON(http.StatusUnauthorized, gin.H{"auth": false})
 	})
 
+	router.GET("/pools/:poolid", func(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")})
+			return
+		}
+
+		backends, code, err := GetUserSessionFromContext(c)
+		if err != nil {
+			c.JSON(code, gin.H{"error": err.Error()})
+			return
+		}
+
+		pool, code, err := GetPool(backends, poolid)
+		if err != nil {
+			c.JSON(code, gin.H{"error": err.Error()})
+		} else {
+			c.JSON(http.StatusOK, gin.H{"pool": pool})
+		}
+	})
+
 	router.POST("/pools/:poolid", func(c *gin.Context) {
 		poolid, ok := c.Params.Get("poolid")
 		if !ok {
@@ -137,7 +168,7 @@ func Run(configPath *string) {
 		if err != nil {
 			c.JSON(code, gin.H{"error": err.Error()})
 		} else {
-			c.Status(200)
+			c.Status(http.StatusOK)
 		}
 	})
 
@@ -158,7 +189,33 @@ func Run(configPath *string) {
 		if err != nil {
 			c.JSON(code, gin.H{"error": err.Error()})
 		} else {
-			c.Status(200)
+			c.Status(http.StatusOK)
+		}
+	})
+
+	router.GET("/groups/:groupid", func(c *gin.Context) {
+		groupid, ok := c.Params.Get("groupid")
+		if !ok {
+			c.JSON(http.StatusBadRequest, gin.H{"error": fmt.Errorf("Missing required path parameter poolid")})
+			return
+		}
+
+		groupname, err := common.ParseGroupname(groupid)
+		if err != nil {
+			c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		}
+
+		backends, code, err := GetUserSessionFromContext(c)
+		if err != nil {
+			c.JSON(code, gin.H{"error": err.Error()})
+			return
+		}
+
+		group, code, err := GetGroup(backends, groupname)
+		if err != nil {
+			c.JSON(code, gin.H{"error": err.Error()})
+		} else {
+			c.JSON(http.StatusOK, gin.H{"group": group})
 		}
 	})
 
@@ -185,7 +242,7 @@ func Run(configPath *string) {
 		if err != nil {
 			c.JSON(code, gin.H{"error": err.Error()})
 		} else {
-			c.Status(200)
+			c.Status(http.StatusOK)
 		}
 	})
 
@@ -212,7 +269,7 @@ func Run(configPath *string) {
 		if err != nil {
 			c.JSON(code, gin.H{"error": err.Error()})
 		} else {
-			c.Status(200)
+			c.Status(http.StatusOK)
 		}
 	})
 
@@ -245,7 +302,7 @@ func Run(configPath *string) {
 		if err != nil {
 			c.JSON(code, gin.H{"error": err.Error()})
 		} else {
-			c.Status(200)
+			c.Status(http.StatusOK)
 		}
 	})
 
@@ -278,7 +335,33 @@ func Run(configPath *string) {
 		if err != nil {
 			c.JSON(code, gin.H{"error": err.Error()})
 		} else {
-			c.Status(200)
+			c.Status(http.StatusOK)
+		}
+	})
+
+	router.GET("/users/:userid", func(c *gin.Context) {
+		userid, ok := c.Params.Get("userid")
+		if !ok {
+			c.JSON(http.StatusBadRequest, gin.H{"error": fmt.Errorf("Missing required path parameter poolid")})
+			return
+		}
+
+		username, err := common.ParseUsername(userid)
+		if err != nil {
+			c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		}
+
+		backends, code, err := GetUserSessionFromContext(c)
+		if err != nil {
+			c.JSON(code, gin.H{"error": err.Error()})
+			return
+		}
+
+		user, code, err := GetUser(backends, username)
+		if err != nil {
+			c.JSON(code, gin.H{"error": err.Error()})
+		} else {
+			c.JSON(http.StatusOK, gin.H{"user": user})
 		}
 	})
 
@@ -318,7 +401,7 @@ func Run(configPath *string) {
 		if err != nil {
 			c.JSON(code, gin.H{"error": err.Error()})
 		} else {
-			c.Status(200)
+			c.Status(http.StatusOK)
 		}
 	})
 
@@ -345,7 +428,7 @@ func Run(configPath *string) {
 		if err != nil {
 			c.JSON(code, gin.H{"error": err.Error()})
 		} else {
-			c.Status(200)
+			c.Status(http.StatusOK)
 		}
 	})
 
@@ -384,7 +467,7 @@ func Run(configPath *string) {
 		if err != nil {
 			c.JSON(code, gin.H{"error": err.Error()})
 		} else {
-			c.Status(200)
+			c.Status(http.StatusOK)
 		}
 	})
 
@@ -423,7 +506,7 @@ func Run(configPath *string) {
 		if err != nil {
 			c.JSON(code, gin.H{"error": err.Error()})
 		} else {
-			c.Status(200)
+			c.Status(http.StatusOK)
 		}
 	})
 
@@ -496,7 +579,7 @@ func GetRealmsFromPVE(config *common.Config) map[string]Realm {
 		}
 
 		if realm.Type == "ldap" {
-			ldapconfig := ldap.LDAPConfig{
+			ldapconfig := common.LDAPConfig{
 				BaseDN:   realm.BaseDN,
 				LdapURL:  fmt.Sprintf("ldap://%s", realm.Server1),
 				StartTLS: realm.Mode == "ldap+starttls",

app/operations.go

@@ -4,12 +4,51 @@ import (
 	"fmt"
 	"net/http"
 	common "user-manager-api/app/common"
+	"user-manager-api/app/ldap"
 )
 
 func NewPool(backends *UserSession, poolname string) (int, error) {
 	// only pve backend handles pools
 	return backends.PVE.NewPool(poolname)
 }
+
+// get pool recursive resolving groups
+func GetPool(backends *UserSession, poolname string) (common.Pool, int, error) {
+	pool := common.Pool{}
+	// get pool from PVE
+	pvepool, members, code, err := backends.PVE.GetPool(poolname)
+	if err != nil {
+		return pool, code, err
+	}
+	// get pool from DB
+	dbpool, _, code, err := backends.DB.GetPool(poolname)
+	if err != nil {
+		return pool, code, err
+	}
+	// assign pool id from PVE, assign everything else from DB
+	pool.PoolID = pvepool.PoolID
+	pool.Resources = dbpool.Resources
+	pool.AllowedNodes = dbpool.AllowedNodes
+	pool.AllowedVMIDRange = dbpool.AllowedVMIDRange
+	pool.AllowedBackups = dbpool.AllowedBackups
+	pool.Templates = dbpool.Templates
+
+	// pool members are groups
+	for _, groupid := range members {
+		groupname, err := common.ParseGroupname(groupid)
+		if err != nil {
+			return pool, code, fmt.Errorf("pool %s had member %s which is not a valid groupname", poolname, groupid)
+		}
+		group, code, err := GetGroup(backends, groupname)
+		if err != nil {
+			return pool, code, err
+		}
+		group.Role = Config.PVE.PAASClientRole
+		pool.Groups = append(pool.Groups, group)
+	}
+
+	return pool, http.StatusOK, nil
+}
 func DelPool(backends *UserSession, poolname string) (int, error) {
 	// only pve backend handles pools
 	return backends.PVE.DelPool(poolname)
@@ -30,6 +69,60 @@ func NewGroup(backends *UserSession, groupname common.Groupname) (int, error) {
 	}
 }
 
+func GetGroup(backends *UserSession, groupname common.Groupname) (common.Group, int, error) {
+	// resolve group from relevant backend
+	if groupname.Realm == "pve" {
+		group, members, code, err := backends.PVE.GetGroup(groupname)
+		if err != nil {
+			return group, code, err
+		}
+		// group members are users
+		for _, userid := range members {
+			username, err := common.ParseUsername(userid)
+			if err != nil {
+				return group, http.StatusInternalServerError, fmt.Errorf("group %s had member %s which is not a valid username", groupname.ToString(), userid)
+			}
+			// fetch and append user
+			user, code, err := GetUser(backends, username)
+			if err != nil {
+				return group, code, err
+			}
+			group.Users = append(group.Users, user)
+		}
+
+		return group, http.StatusOK, nil
+	} else if groupname.Realm == backends.Realm.Name {
+		group, members, code, err := backends.Realm.Handler.(common.Backend).GetGroup(groupname)
+		if err != nil {
+			return common.Group{}, code, err
+		}
+		// group mambers are users
+		for _, userdn := range members {
+			// member list is of ldap user DN instead of pve userid
+			ldapuid, err := ldap.ExtractUIDFromUserDN(userdn)
+			if err != nil {
+				return group, http.StatusInternalServerError, fmt.Errorf("group %s had member %s which is not a valid user DN", groupname.ToString(), userdn)
+			}
+			// generate username from user DN (slightly inefficient)
+			userid := fmt.Sprintf("%s@%s", ldapuid, backends.Realm.Name)
+			username, err := common.ParseUsername(userid)
+			if err != nil {
+				return group, http.StatusInternalServerError, fmt.Errorf("group %s had member %s which is not a valid username", groupname.ToString(), userid)
+			}
+			// fetch and append user
+			user, code, err := GetUser(backends, username)
+			if err != nil {
+				return group, code, err
+			}
+			group.Users = append(group.Users, user)
+		}
+
+		return group, http.StatusOK, nil
+	} else {
+		return common.Group{}, http.StatusUnauthorized, fmt.Errorf("user is not in the same realm as requested group")
+	}
+}
+
 func DelGroup(backends *UserSession, groupname common.Groupname) (int, error) {
 	if groupname.Realm == "pve" {
 		return backends.PVE.DelGroup(groupname)
@@ -70,6 +163,25 @@ func NewUser(backends *UserSession, username common.Username, user common.User)
 	}
 }
 
+func GetUser(backends *UserSession, username common.Username) (common.User, int, error) {
+	// fetch user from relevant realm
+	if username.Realm == "pve" {
+		pveuser, code, err := backends.PVE.GetUser(username)
+		if err != nil {
+			return common.User{}, code, err
+		}
+		return pveuser, http.StatusOK, nil
+	} else if username.Realm == backends.Realm.Name {
+		realmuser, code, err := backends.Realm.Handler.(common.Backend).GetUser(username)
+		if err != nil {
+			return common.User{}, code, err
+		}
+		return realmuser, http.StatusOK, nil
+	} else {
+		return common.User{}, http.StatusUnauthorized, fmt.Errorf("user is not in the same realm as requested user")
+	}
+}
+
 func DelUser(backends *UserSession, username common.Username) (int, error) {
 	if username.Realm == "pve" {
 		return backends.PVE.DelUser(username)

app/pve/pve.go

@@ -39,16 +39,15 @@ func NewClientFromCredentials(config common.PVEConfig, username common.Username,
 		return nil, http.StatusUnauthorized, err
 	}
 
-	// todo this should return an error code if the binding failed (ie fetch version to check if the auth was actually ok)
 	return &ProxmoxClient{config: &config, client: client}, http.StatusOK, nil
 }
 
 func (pve ProxmoxClient) SyncRealms() (int, error) {
 	domains, err := pve.client.Domains(context.Background())
 	if proxmox.IsNotAuthorized(err) {
-		return 401, err
+		return http.StatusUnauthorized, err
 	} else if err != nil {
-		return 500, err
+		return http.StatusInternalServerError, err
 	}
 	for _, domain := range domains {
 		if domain.Type != "pam" && domain.Type != "pve" { // pam and pve are not external realm types that require sync
@@ -59,41 +58,73 @@ func (pve ProxmoxClient) SyncRealms() (int, error) {
 				RemoveVanished: "acl;entry;properties", // remove deleted objects from ACL, entry in pve, and remove properties (probably not necessary)
 			})
 			if proxmox.IsNotAuthorized(err) {
-				return 401, err
+				return http.StatusUnauthorized, err
 			} else if err != nil {
-				return 500, err
+				return http.StatusInternalServerError, err
 			}
 		}
 	}
-	return 200, nil
+	return http.StatusOK, nil
 }
 
 func (pve ProxmoxClient) NewPool(poolname string) (int, error) {
 	err := pve.client.NewPool(context.Background(), poolname, "")
 	if proxmox.IsNotAuthorized(err) {
-		return 401, err
+		return http.StatusUnauthorized, err
 	} else if err != nil {
-		return 500, err
+		return http.StatusInternalServerError, err
 	} else {
-		return 200, nil
+		return http.StatusOK, nil
 	}
 }
 
+func (pve ProxmoxClient) GetPool(poolname string) (common.Pool, []string, int, error) {
+	pool := common.Pool{}
+	members := []string{}
+
+	pvepool, err := pve.client.Pool(context.Background(), poolname)
+	if proxmox.IsNotFound(err) { // errors if pool does not exist
+		return pool, members, http.StatusNotFound, err
+	} else if err != nil {
+		return pool, members, http.StatusInternalServerError, err
+	}
+
+	pool.PoolID = pvepool.PoolID
+
+	acls, err := pve.client.ACL(context.Background())
+	if proxmox.IsNotAuthorized(err) { // errors if pool does not exist
+		return pool, members, http.StatusUnauthorized, err
+	} else if err != nil {
+		return pool, members, http.StatusInternalServerError, err
+	}
+
+	// iterate through ACLs and get superficial pool - group membershipm (just group names)
+	for _, acl := range acls {
+		if acl.Type == "group" && acl.RoleID == pve.config.PAASClientRole && acl.Path == fmt.Sprintf("/pool/%s", poolname) {
+			members = append(members, acl.UGID)
+		}
+	}
+
+	return pool, members, http.StatusOK, nil
+}
+
 func (pve ProxmoxClient) DelPool(poolname string) (int, error) {
 	pvepool, err := pve.client.Pool(context.Background(), poolname)
-	if proxmox.IsNotFound(err) { // errors if pool does not exist
+	if proxmox.IsNotAuthorized(err) { // not authorized to delete
-		return 404, err
+		return http.StatusUnauthorized, err
+	} else if proxmox.IsNotFound(err) { // errors if pool does not exist
+		return http.StatusNotFound, err
 	} else if err != nil {
-		return 500, err
+		return http.StatusInternalServerError, err
 	}
 
 	err = pvepool.Delete(context.Background())
 	if proxmox.IsNotAuthorized(err) { // not authorized to delete
-		return 401, err
+		return http.StatusUnauthorized, err
 	} else if err != nil {
-		return 500, err
+		return http.StatusInternalServerError, err
 	} else {
-		return 200, nil
+		return http.StatusOK, nil
 	}
 }
 
@@ -101,29 +132,50 @@ func (pve ProxmoxClient) NewGroup(groupname common.Groupname) (int, error) {
 	// add new group ny ID only
 	err := pve.client.NewGroup(context.Background(), groupname.GroupID, "")
 	if proxmox.IsNotAuthorized(err) {
-		return 401, err
+		return http.StatusUnauthorized, err
 	} else if err != nil {
-		return 500, err
+		return http.StatusInternalServerError, err
 	} else {
-		return 200, nil
+		return http.StatusOK, nil
 	}
 }
 
+func (pve ProxmoxClient) GetGroup(groupname common.Groupname) (common.Group, []string, int, error) {
+	group := common.Group{}
+	members := []string{}
+	pvegroup, err := pve.client.Group(context.Background(), groupname.ToString())
+	if proxmox.IsNotFound(err) { // errors if pool does not exist
+		return group, members, http.StatusNotFound, err
+	} else if err != nil {
+		return group, members, http.StatusInternalServerError, err
+	}
+
+	group.Groupname, _ = common.ParseGroupname(pvegroup.GroupID)
+
+	for _, userid := range pvegroup.Members {
+		members = append(members, userid)
+	}
+
+	return group, members, http.StatusOK, nil
+}
+
 func (pve ProxmoxClient) DelGroup(groupname common.Groupname) (int, error) {
 	pvegroup, err := pve.client.Group(context.Background(), groupname.GroupID)
-	if proxmox.IsNotFound(err) { // errors if group does not exist
+	if proxmox.IsNotAuthorized(err) {
-		return 404, err
+		return http.StatusUnauthorized, err
+	} else if proxmox.IsNotFound(err) {
+		return http.StatusNotFound, err
 	} else if err != nil {
-		return 500, err
+		return http.StatusInternalServerError, err
 	}
 
 	err = pvegroup.Delete(context.Background())
 	if proxmox.IsNotAuthorized(err) { // not authorized to delete
-		return 401, err
+		return http.StatusUnauthorized, err
 	} else if err != nil {
-		return 500, err
+		return http.StatusInternalServerError, err
 	} else {
-		return 200, nil
+		return http.StatusOK, nil
 	}
 }
 
@@ -137,11 +189,11 @@ func (pve ProxmoxClient) AddGroupToPool(groupname common.Groupname, poolname str
 	})
 
 	if proxmox.IsNotAuthorized(err) {
-		return 401, err
+		return http.StatusUnauthorized, err
 	} else if err != nil {
-		return 500, err
+		return http.StatusInternalServerError, err
 	} else {
-		return 200, nil
+		return http.StatusOK, nil
 	}
 }
 
@@ -155,11 +207,11 @@ func (pve ProxmoxClient) DelGroupFromPool(groupname common.Groupname, poolname s
 	})
 
 	if proxmox.IsNotAuthorized(err) {
-		return 401, err
+		return http.StatusUnauthorized, err
 	} else if err != nil {
-		return 500, err
+		return http.StatusInternalServerError, err
 	} else {
-		return 200, nil
+		return http.StatusOK, nil
 	}
 }
 
@@ -172,39 +224,59 @@ func (pve ProxmoxClient) NewUser(username common.Username, user common.User) (in
 		Password:  user.Password,
 	})
 	if proxmox.IsNotAuthorized(err) {
-		return 401, err
+		return http.StatusUnauthorized, err
 	} else if err != nil {
-		return 500, err
+		return http.StatusInternalServerError, err
 	} else {
-		return 200, nil
+		return http.StatusOK, nil
+	}
+}
+
+func (pve ProxmoxClient) GetUser(username common.Username) (common.User, int, error) {
+	user := common.User{}
+	pveuser, err := pve.client.User(context.Background(), username.ToString())
+	if proxmox.IsNotFound(err) { // errors if pool does not exist
+		return user, http.StatusNotFound, err
+	} else if err != nil {
+		return user, http.StatusInternalServerError, err
+	} else {
+		user.Username, _ = common.ParseUsername(pveuser.UserID)
+		user.CN = pveuser.Firstname
+		user.SN = pveuser.Lastname
+		user.Mail = pveuser.Email
+		return user, http.StatusOK, nil
 	}
 }
 
 func (pve ProxmoxClient) DelUser(username common.Username) (int, error) {
 	user, err := pve.client.User(context.Background(), username.ToString())
 	if proxmox.IsNotAuthorized(err) {
-		return 401, err // not authorized to read the user = not authorized to delete the user, this may be slightly different from ldap
+		return http.StatusUnauthorized, err
+	} else if proxmox.IsNotFound(err) {
+		return http.StatusNotFound, err
 	} else if err != nil {
-		return 500, err
+		return http.StatusInternalServerError, err
 	}
 
 	// assume that user cannot be nil if no error was returned
 	err = user.Delete(context.Background())
 	if proxmox.IsNotAuthorized(err) {
-		return 401, err // not authorized to delete the user
+		return http.StatusUnauthorized, err // not authorized to delete the user
 	} else if err != nil {
-		return 500, err
+		return http.StatusInternalServerError, err
 	} else {
-		return 200, nil
+		return http.StatusOK, nil
 	}
 }
 
 func (pve ProxmoxClient) AddUserToGroup(username common.Username, groupname common.Groupname) (int, error) {
-	user, err := pve.client.User(context.Background(), groupname.ToString())
+	user, err := pve.client.User(context.Background(), username.ToString())
 	if proxmox.IsNotAuthorized(err) {
-		return 401, err // not authorized to read the user = not authorized to delete the user, this may be slightly different from ldap
+		return http.StatusUnauthorized, err
+	} else if proxmox.IsNotFound(err) {
+		return http.StatusNotFound, err
 	} else if err != nil {
-		return 500, err
+		return http.StatusInternalServerError, err
 	}
 
 	newGroups := append(user.Groups, groupname.ToString())
@@ -213,20 +285,22 @@ func (pve ProxmoxClient) AddUserToGroup(username common.Username, groupname comm
 		Groups: newGroups,
 	})
 	if proxmox.IsNotAuthorized(err) {
-		return 401, err // not authorized to delete the user
+		return http.StatusUnauthorized, err // not authorized to delete the user
 	} else if err != nil {
-		return 500, err
+		return http.StatusInternalServerError, err
 	} else {
-		return 200, nil
+		return http.StatusOK, nil
 	}
 }
 
 func (pve ProxmoxClient) DelUserFromGroup(username common.Username, groupname common.Groupname) (int, error) {
-	user, err := pve.client.User(context.Background(), groupname.ToString())
+	user, err := pve.client.User(context.Background(), username.ToString())
 	if proxmox.IsNotAuthorized(err) {
-		return 401, err // not authorized to read the user = not authorized to delete the user, this may be slightly different from ldap
+		return http.StatusUnauthorized, err
+	} else if proxmox.IsNotFound(err) {
+		return http.StatusNotFound, err
 	} else if err != nil {
-		return 500, err
+		return http.StatusInternalServerError, err
 	}
 
 	idx := slices.Index(user.Groups, groupname.ToString())
@@ -239,10 +313,10 @@ func (pve ProxmoxClient) DelUserFromGroup(username common.Username, groupname co
 		Groups: newGroups,
 	})
 	if proxmox.IsNotAuthorized(err) {
-		return 401, err // not authorized to delete the user
+		return http.StatusUnauthorized, err // not authorized to delete the user
 	} else if err != nil {
-		return 500, err
+		return http.StatusInternalServerError, err
 	} else {
-		return 200, nil
+		return http.StatusOK, nil
 	}
 }

app/utils.go

@@ -1,15 +1,13 @@
 package app
 
 import (
-	"encoding/json"
 	"fmt"
 	"net/http"
-	"os"
 
 	"github.com/gin-contrib/sessions"
 	"github.com/gin-gonic/gin"
 
-	common "user-manager-api/app/common"
+	localdb "user-manager-api/app/localdb"
 	pve "user-manager-api/app/pve"
 )
 
@@ -24,6 +22,7 @@ type UserSession struct {
 		Name    string
 		Handler any
 	}
+	DB *localdb.DB
 }
 
 func GetUserSessionFromContext(c *gin.Context) (*UserSession, int, error) {
@@ -36,27 +35,3 @@ func GetUserSessionFromContext(c *gin.Context) (*UserSession, int, error) {
 	usersession := UserSessions[uuid]
 	return usersession, http.StatusOK, nil
 }
-
-func LoadLocaldb(dbPath string) (map[string]common.User, error) {
-	users := map[string]common.User{}
-	content, err := os.ReadFile(dbPath)
-	if err != nil {
-		//log.Fatal("Error when opening file: ", err)
-		return users, err
-	}
-	err = json.Unmarshal(content, &users)
-	if err != nil {
-		//log.Fatal("Error during Unmarshal(): ", err)
-		return users, err
-	}
-	return users, nil
-}
-
-func SaveLocaldb(configPath string, users map[string]common.User) error {
-	json, err := json.Marshal(users)
-	if err != nil {
-		return err
-	}
-	err = os.WriteFile(configPath, []byte(json), 0644)
-	return err
-}

user-manager-api.go

@@ -7,6 +7,7 @@ import (
 
 func main() {
 	configPath := flag.String("config", "config.json", "path to config.json file")
+	localDBPath := flag.String("localdb", "localdb.json", "path to localdb.json file")
 	flag.Parse()
-	app.Run(configPath)
+	app.Run(configPath, localDBPath)
 }