rename make testsd target to test

add integration test for LDAPClient,
add aiutomatic openldap configuration for testing through make,
add make targets for tests
improve make targets for build/clean,
update README with build and test instructions

.gitignore

@@ -1,3 +1,3 @@
-**/go.sum
+go.sum
-**/config.json
 dist/*
+**/config.json

Makefile

@@ -1,9 +1,23 @@
-build: clean
+.PHONY: build test clean dev-init dev-reinit
-	go build -ldflags="-s -w" -o dist/ .
 
-test: clean
+build: clean
-	go run .
+	@echo "======================== Building Binary ======================="
+	CGO_ENABLED=0 go build -ldflags="-s -w" -v -o dist/ .
+
+test: dev-reinit
+	@echo "======================== Running Tests ========================="
+	go test -v -cover -coverpkg=./app/ -coverprofile coverage ./test/
+	@echo "======================= Coverage Report ========================"
+	go tool cover -func=coverage
+	@rm -f coverage
 
 clean:
+	@echo "======================== Cleaning Project ======================"
 	go clean
 	rm -f dist/*
+
+dev-init:
+	@cd scripts; make dev-init
+
+dev-reinit:
+	@cd scripts; make dev-reinit

README.md

@@ -0,0 +1,53 @@
+# ProxmoxAAS LDAP - Simple REST API for LDAP
+
+ProxmoxAAS LDAP provides a simple API for managing users and groups in a simplified LDAP server. Expected LDAP configuration can be initialized using [open-ldap-setup](https://git.tronnet.net/tronnet/open-ldap-setup). 
+
+## Installation
+
+### Prerequisites
+
+- Initialized LDAP server with the following configuration
+    - Structure
+        - Users: ou=people,...
+            - objectType: inetOrgPerson
+            - At least 1 user which is a member of admin group
+        - Groups: ou=groups,...
+            - objectType: groupOfNames
+            - At least 1 admin group
+    - Permissions:
+        - Admin group should have write access
+        - Users should have write access to own attributes (cn, sn, userPassword)
+        - Enable anonymous binding
+    - Load MemberOf Policy:
+        - olcMemberOfDangling: ignore
+        - olcMemberOfRefInt: TRUE
+        - olcMemberOfGroupOC: groupOfNames
+        - olcMemberOfMemberAD: member
+        - olcMemberOfMemberOfAD: memberOf
+    - Password Policy and TLS are recommended but not required
+
+### Installation
+
+1. Download `proxmoxaas-ldap` binary and `template.config.json` file from [releases](https://git.tronnet.net/tronnet/ProxmoxAAS-LDAP/releases)
+2. Rename `template.config.json` to `config.json` and modify:
+    - ldapURL: url to the ldap server ie. `ldap://ldap.domain.net`
+    - baseDN: base DN ie. `dc=domain,dc=net`
+    - sessionSecretKey: random value used to randomize cookie values, replace with any sufficiently large random string
+3. Run the binary
+
+## Building and Testing from Source
+
+Building requires the go toolchain. Testing requires the go toolchain, make, and apt. Currently only supports Debian.
+
+### Building from Source
+
+1. Clone the repository
+2. Run `go get` to get requirements
+3. Run `make` to build the binary
+
+### Testing Source
+
+1. Clone the repository
+2. Run `go get` to get requirements
+3. Run `make dev-init` to install test requirements including openldap (slapd), ldap-utils, debconf-utils
+4. Run `make tests` to run all tests

app/app.go

@@ -15,15 +15,22 @@ import (
 )
 
 var LDAPSessions map[string]*LDAPClient
+var AppVersion = "1.0.5"
+var APIVersion = "1.0.4"
 
 func Run() {
 	gob.Register(LDAPClient{})
 
+	log.Printf("Starting ProxmoxAAS-LDAP version %s\n", APIVersion)
+
 	configPath := flag.String("config", "config.json", "path to config.json file")
 	flag.Parse()
 
-	config := GetConfig(*configPath)
+	config, err := GetConfig(*configPath)
-	log.Println("Initialized config from " + *configPath)
+	if err != nil {
+		log.Fatal("Error when reading config file: ", err)
+	}
+	log.Printf("Read in config from %s\n", *configPath)
 
 	gin.SetMode(gin.ReleaseMode)
 	router := gin.Default()
@@ -36,8 +43,14 @@ func Run() {
 	})
 	router.Use(sessions.Sessions(config.SessionCookieName, store))
 
+	log.Printf("Started API router and cookie store (Name: %s Params: %+v)\n", config.SessionCookieName, config.SessionCookie)
+
 	LDAPSessions = make(map[string]*LDAPClient)
 
+	router.GET("/version", func(c *gin.Context) {
+		c.JSON(http.StatusOK, gin.H{"version": APIVersion, "app-version": AppVersion})
+	})
+
 	router.POST("/ticket", func(c *gin.Context) {
 		var body Login
 		if err := c.ShouldBind(&body); err != nil { // bad request from binding
@@ -81,7 +94,7 @@ func Run() {
 		uuid := SessionUUID.(string)
 		delete(LDAPSessions, uuid)
 		session.Options(sessions.Options{MaxAge: -1}) // set max age to -1 so it is deleted
-		_ = session.Save()
+		session.Save()
 		c.JSON(http.StatusUnauthorized, gin.H{"auth": false})
 	})
 
@@ -100,7 +113,7 @@ func Run() {
 		}
 
 		status, res := LDAPSession.GetAllUsers()
-		c.JSON(status, res)
+		c.JSON(status, HandleResponse(res))
 	})
 
 	router.POST("/users/:userid", func(c *gin.Context) {
@@ -117,20 +130,24 @@ func Run() {
 			return
 		}
 
-		var body User
-		if err := c.ShouldBind(&body); err != nil { // bad request from binding
-			c.JSON(http.StatusBadRequest, gin.H{"auth": false, "error": err.Error()})
-			return
-		}
-
 		// check if user already exists
 		status, res := LDAPSession.GetUser(c.Param("userid"))
 		if status != 200 && ldap.IsErrorWithCode(res["error"].(error), ldap.LDAPResultNoSuchObject) { // user does not already exist, create new user
+			var body UserRequired                       // all user attributes required for new users
+			if err := c.ShouldBind(&body); err != nil { // attempt to bind user data
+				c.JSON(http.StatusBadRequest, gin.H{"auth": false, "error": err.Error()})
+				return
+			}
 			status, res = LDAPSession.AddUser(c.Param("userid"), body)
-			c.JSON(status, res)
+			c.JSON(status, HandleResponse(res))
 		} else { // user already exists, attempt to modify user
+			var body UserOptional                       // all user attributes optional for new users
+			if err := c.ShouldBind(&body); err != nil { // attempt to bind user data
+				c.JSON(http.StatusBadRequest, gin.H{"auth": false, "error": err.Error()})
+				return
+			}
 			status, res = LDAPSession.ModUser(c.Param("userid"), body)
-			c.JSON(status, res)
+			c.JSON(status, HandleResponse(res))
 		}
 	})
 
@@ -149,7 +166,7 @@ func Run() {
 		}
 
 		status, res := LDAPSession.GetUser(c.Param("userid"))
-		c.JSON(status, res)
+		c.JSON(status, HandleResponse(res))
 	})
 
 	router.DELETE("/users/:userid", func(c *gin.Context) {
@@ -167,7 +184,7 @@ func Run() {
 		}
 
 		status, res := LDAPSession.DelUser(c.Param("userid"))
-		c.JSON(status, res)
+		c.JSON(status, HandleResponse(res))
 	})
 
 	router.GET("/groups", func(c *gin.Context) {
@@ -185,7 +202,7 @@ func Run() {
 		}
 
 		status, res := LDAPSession.GetAllGroups()
-		c.JSON(status, res)
+		c.JSON(status, HandleResponse(res))
 	})
 
 	router.GET("/groups/:groupid", func(c *gin.Context) {
@@ -203,7 +220,7 @@ func Run() {
 		}
 
 		status, res := LDAPSession.GetGroup(c.Param("groupid"))
-		c.JSON(status, res)
+		c.JSON(status, HandleResponse(res))
 	})
 
 	router.POST("/groups/:groupid", func(c *gin.Context) {
@@ -226,14 +243,14 @@ func Run() {
 			return
 		}
 
-		// check if user already exists
+		// check if group already exists
 		status, res := LDAPSession.GetGroup(c.Param("groupid"))
-		if status != 200 && ldap.IsErrorWithCode(res["error"].(error), ldap.LDAPResultNoSuchObject) { // user does not already exist, create new user
+		if status != 200 && ldap.IsErrorWithCode(res["error"].(error), ldap.LDAPResultNoSuchObject) { // group does not already exist, create new group
 			status, res = LDAPSession.AddGroup(c.Param("groupid"), body)
-			c.JSON(status, res)
+			c.JSON(status, HandleResponse(res))
-		} else { // user already exists, attempt to modify user
+		} else { // group already exists, attempt to modify group
 			status, res = LDAPSession.ModGroup(c.Param("groupid"), body)
-			c.JSON(status, res)
+			c.JSON(status, HandleResponse(res))
 		}
 	})
 
@@ -252,7 +269,7 @@ func Run() {
 		}
 
 		status, res := LDAPSession.DelGroup(c.Param("groupid"))
-		c.JSON(status, res)
+		c.JSON(status, HandleResponse(res))
 	})
 
 	router.POST("/groups/:groupid/members/:userid", func(c *gin.Context) {
@@ -270,7 +287,7 @@ func Run() {
 		}
 
 		status, res := LDAPSession.AddUserToGroup(c.Param("userid"), c.Param("groupid"))
-		c.JSON(status, res)
+		c.JSON(status, HandleResponse(res))
 	})
 
 	router.DELETE("/groups/:groupid/members/:userid", func(c *gin.Context) {
@@ -288,8 +305,10 @@ func Run() {
 		}
 
 		status, res := LDAPSession.DelUserFromGroup(c.Param("userid"), c.Param("groupid"))
-		c.JSON(status, res)
+		c.JSON(status, HandleResponse(res))
 	})
 
+	log.Printf("Starting LDAP API on port %s\n", strconv.Itoa(config.ListenPort))
+
 	router.Run("0.0.0.0:" + strconv.Itoa(config.ListenPort))
 }

app/ldap.go

@@ -1,6 +1,8 @@
 package app
 
 import (
+	"crypto/tls"
+	"errors"
 	"fmt"
 	"net/http"
 
@@ -8,6 +10,7 @@ import (
 	"github.com/go-ldap/ldap/v3"
 )
 
+// LDAPClient wrapper struct containing the connection, baseDN, peopleDN, and groupsDN
 type LDAPClient struct {
 	client   *ldap.Conn
 	basedn   string
@@ -15,8 +18,20 @@ type LDAPClient struct {
 	groupsdn string
 }
 
+// returns a new LDAPClient from the config
 func NewLDAPClient(config Config) (*LDAPClient, error) {
 	LDAPConn, err := ldap.DialURL(config.LdapURL)
+	if err != nil {
+		return nil, err
+	}
+
+	if config.StartTLS {
+		err = LDAPConn.StartTLS(&tls.Config{InsecureSkipVerify: true})
+		if err != nil {
+			return nil, err
+		}
+	}
+
 	return &LDAPClient{
 		client:   LDAPConn,
 		basedn:   config.BaseDN,
@@ -25,6 +40,7 @@ func NewLDAPClient(config Config) (*LDAPClient, error) {
 	}, err
 }
 
+// bind a user using username and password to the LDAPClient
 func (l LDAPClient) BindUser(username string, password string) error {
 	userdn := fmt.Sprintf("uid=%s,%s", username, l.peopledn)
 	return l.client.Bind(userdn, password)
@@ -34,8 +50,8 @@ func (l LDAPClient) GetAllUsers() (int, gin.H) {
 	searchRequest := ldap.NewSearchRequest(
 		l.peopledn, // The base dn to search
 		ldap.ScopeWholeSubtree, ldap.NeverDerefAliases, 0, 0, false,
-		"(&(objectClass=inetOrgPerson))",          // The filter to apply
+		"(&(objectClass=inetOrgPerson))",                      // The filter to apply
-		[]string{"dn", "cn", "sn", "mail", "uid"}, // A list attributes to retrieve
+		[]string{"dn", "cn", "sn", "mail", "uid", "memberOf"}, // A list attributes to retrieve
 		nil,
 	)
 
@@ -50,15 +66,8 @@ func (l LDAPClient) GetAllUsers() (int, gin.H) {
 	var results = []gin.H{} // create list of results
 
 	for _, entry := range searchResponse.Entries { // for each result,
-		results = append(results, gin.H{
+		user := LDAPEntryToLDAPUser(entry)
-			"dn": entry.DN,
+		results = append(results, LDAPUserToGin(user))
-			"attributes": gin.H{
-				"cn":   entry.GetAttributeValue("cn"),
-				"sn":   entry.GetAttributeValue("sn"),
-				"mail": entry.GetAttributeValue("mail"),
-				"uid":  entry.GetAttributeValue("uid"),
-			},
-		})
 	}
 
 	return http.StatusOK, gin.H{
@@ -68,11 +77,43 @@ func (l LDAPClient) GetAllUsers() (int, gin.H) {
 	}
 }
 
-func (l LDAPClient) AddUser(uid string, user User) (int, gin.H) {
+func (l LDAPClient) GetUser(uid string) (int, gin.H) {
-	if user.CN == "" || user.SN == "" || user.UserPassword == "" {
+	searchRequest := ldap.NewSearchRequest( //  setup search for user by uid
+		fmt.Sprintf("uid=%s,%s", uid, l.peopledn), // The base dn to search
+		ldap.ScopeWholeSubtree, ldap.NeverDerefAliases, 0, 0, false,
+		"(&(objectClass=inetOrgPerson))",                      // The filter to apply
+		[]string{"dn", "cn", "sn", "mail", "uid", "memberOf"}, // A list attributes to retrieve
+		nil,
+	)
+
+	searchResponse, err := l.client.Search(searchRequest) // perform search
+	if err != nil {
 		return http.StatusBadRequest, gin.H{
 			"ok":    false,
-			"error": "Missing one of required fields: cn, sn, userpassword",
+			"error": err,
+		}
+	}
+
+	entry := searchResponse.Entries[0]
+
+	user := LDAPEntryToLDAPUser(entry)
+	result := LDAPUserToGin(user)
+
+	return http.StatusOK, gin.H{
+		"ok":    true,
+		"error": nil,
+		"user":  result,
+	}
+}
+
+func (l LDAPClient) AddUser(uid string, user UserRequired) (int, gin.H) {
+	if user.CN == "" || user.SN == "" || user.UserPassword == "" || user.Mail == "" {
+		return http.StatusBadRequest, gin.H{
+			"ok": false,
+			"error": ldap.NewError(
+				ldap.LDAPResultUnwillingToPerform,
+				errors.New("missing one of required fields: cn, sn, mail, userpassword"),
+			),
 		}
 	}
 
@@ -82,7 +123,8 @@ func (l LDAPClient) AddUser(uid string, user User) (int, gin.H) {
 	)
 	addRequest.Attribute("sn", []string{user.SN})
 	addRequest.Attribute("cn", []string{user.CN})
-	addRequest.Attribute("userPassword", []string{user.CN})
+	addRequest.Attribute("mail", []string{user.Mail})
+	addRequest.Attribute("userPassword", []string{user.UserPassword})
 	addRequest.Attribute("objectClass", []string{"inetOrgPerson"})
 
 	err := l.client.Add(addRequest)
@@ -99,46 +141,14 @@ func (l LDAPClient) AddUser(uid string, user User) (int, gin.H) {
 	}
 }
 
-func (l LDAPClient) GetUser(uid string) (int, gin.H) {
+func (l LDAPClient) ModUser(uid string, user UserOptional) (int, gin.H) {
-	searchRequest := ldap.NewSearchRequest( //  setup search for user by uid
+	if user.CN == "" && user.SN == "" && user.UserPassword == "" && user.Mail == "" {
-		fmt.Sprintf("uid=%s,%s", uid, l.peopledn), // The base dn to search
-		ldap.ScopeWholeSubtree, ldap.NeverDerefAliases, 0, 0, false,
-		"(&(objectClass=inetOrgPerson))",          // The filter to apply
-		[]string{"dn", "cn", "sn", "mail", "uid"}, // A list attributes to retrieve
-		nil,
-	)
-
-	searchResponse, err := l.client.Search(searchRequest) // perform search
-	if err != nil {
 		return http.StatusBadRequest, gin.H{
-			"ok":    false,
+			"ok": false,
-			"error": err,
+			"error": ldap.NewError(
-		}
+				ldap.LDAPResultUnwillingToPerform,
-	}
+				errors.New("requires one of fields: cn, sn, mail, userpassword"),
-
+			),
-	entry := searchResponse.Entries[0]
-	result := gin.H{
-		"dn": entry.DN,
-		"attributes": gin.H{
-			"cn":   entry.GetAttributeValue("cn"),
-			"sn":   entry.GetAttributeValue("sn"),
-			"mail": entry.GetAttributeValue("mail"),
-			"uid":  entry.GetAttributeValue("uid"),
-		},
-	}
-
-	return http.StatusOK, gin.H{
-		"ok":    true,
-		"error": nil,
-		"user":  result,
-	}
-}
-
-func (l LDAPClient) ModUser(uid string, user User) (int, gin.H) {
-	if user.CN == "" && user.SN == "" && user.UserPassword == "" {
-		return http.StatusBadRequest, gin.H{
-			"ok":    false,
-			"error": "Requires one of fields: cn, sn, userpassword",
 		}
 	}
 
@@ -152,6 +162,9 @@ func (l LDAPClient) ModUser(uid string, user User) (int, gin.H) {
 	if user.SN != "" {
 		modifyRequest.Replace("sn", []string{user.SN})
 	}
+	if user.Mail != "" {
+		modifyRequest.Replace("mail", []string{user.Mail})
+	}
 	if user.UserPassword != "" {
 		modifyRequest.Replace("userPassword", []string{user.UserPassword})
 	}
@@ -214,13 +227,8 @@ func (l LDAPClient) GetAllGroups() (int, gin.H) {
 	var results = []gin.H{} // create list of results
 
 	for _, entry := range searchResponse.Entries { // for each result,
-		results = append(results, gin.H{
+		group := LDAPEntryToLDAPGroup(entry)
-			"dn": entry.DN,
+		results = append(results, LDAPGroupToGin(group))
-			"attributes": gin.H{
-				"cn":     entry.GetAttributeValue("cn"),
-				"member": entry.GetAttributeValues("member"),
-			},
-		})
 	}
 
 	return http.StatusOK, gin.H{
@@ -248,13 +256,8 @@ func (l LDAPClient) GetGroup(gid string) (int, gin.H) {
 	}
 
 	entry := searchResponse.Entries[0]
-	result := gin.H{
+	group := LDAPEntryToLDAPGroup(entry)
-		"dn": entry.DN,
+	result := LDAPGroupToGin(group)
-		"attributes": gin.H{
-			"cn":     entry.GetAttributeValue("cn"),
-			"member": entry.GetAttributeValues("member"),
-		},
-	}
 
 	return http.StatusOK, gin.H{
 		"ok":    true,
@@ -287,7 +290,22 @@ func (l LDAPClient) AddGroup(gid string, group Group) (int, gin.H) {
 }
 
 func (l LDAPClient) ModGroup(gid string, group Group) (int, gin.H) {
-	return 200, gin.H{
+	modifyRequest := ldap.NewModifyRequest(
+		fmt.Sprintf("cn=%s,%s", gid, l.groupsdn),
+		nil,
+	)
+
+	modifyRequest.Replace("cn", []string{gid})
+
+	err := l.client.Modify(modifyRequest)
+	if err != nil {
+		return http.StatusBadRequest, gin.H{
+			"ok":    false,
+			"error": err,
+		}
+	}
+
+	return http.StatusOK, gin.H{
 		"ok":    true,
 		"error": nil,
 	}

app/utils.go

@@ -2,13 +2,16 @@ package app
 
 import (
 	"encoding/json"
-	"log"
 	"os"
+
+	"github.com/gin-gonic/gin"
+	"github.com/go-ldap/ldap/v3"
 )
 
 type Config struct {
 	ListenPort        int    `json:"listenPort"`
 	LdapURL           string `json:"ldapURL"`
+	StartTLS          bool   `json:"startTLS"`
 	BaseDN            string `json:"baseDN"`
 	SessionSecretKey  string `json:"sessionSecretKey"`
 	SessionCookieName string `json:"sessionCookieName"`
@@ -20,17 +23,17 @@ type Config struct {
 	}
 }
 
-func GetConfig(configPath string) Config {
+func GetConfig(configPath string) (Config, error) {
 	content, err := os.ReadFile(configPath)
 	if err != nil {
-		log.Fatal("Error when opening config file: ", err)
+		return Config{}, err
 	}
 	var config Config
 	err = json.Unmarshal(content, &config)
 	if err != nil {
-		log.Fatal("Error during parsing config file: ", err)
+		return Config{}, err
 	}
-	return config
+	return config, nil
 }
 
 type Login struct { // login body struct
@@ -38,11 +41,103 @@ type Login struct { // login body struct
 	Password string `form:"password" binding:"required"`
 }
 
-type User struct { // add or modify user body struct
+type LDAPUserAttributes struct {
+	CN       string
+	SN       string
+	Mail     string
+	UID      string
+	MemberOf []string
+}
+
+type LDAPUser struct {
+	DN         string
+	Attributes LDAPUserAttributes
+}
+
+func LDAPEntryToLDAPUser(entry *ldap.Entry) LDAPUser {
+	return LDAPUser{
+		DN: entry.DN,
+		Attributes: LDAPUserAttributes{
+			CN:       entry.GetAttributeValue("cn"),
+			SN:       entry.GetAttributeValue("sn"),
+			Mail:     entry.GetAttributeValue("mail"),
+			UID:      entry.GetAttributeValue("uid"),
+			MemberOf: entry.GetAttributeValues("memberOf"),
+		},
+	}
+}
+
+func LDAPUserToGin(user LDAPUser) gin.H {
+	return gin.H{
+		"dn": user.DN,
+		"attributes": gin.H{
+			"cn":       user.Attributes.CN,
+			"sn":       user.Attributes.SN,
+			"mail":     user.Attributes.Mail,
+			"uid":      user.Attributes.UID,
+			"memberOf": user.Attributes.MemberOf,
+		},
+	}
+}
+
+type LDAPGroupAttributes struct {
+	CN     string
+	Member []string
+}
+
+type LDAPGroup struct {
+	DN         string
+	Attributes LDAPGroupAttributes
+}
+
+func LDAPEntryToLDAPGroup(entry *ldap.Entry) LDAPGroup {
+	return LDAPGroup{
+		DN: entry.DN,
+		Attributes: LDAPGroupAttributes{
+			CN:     entry.GetAttributeValue("cn"),
+			Member: entry.GetAttributeValues("member"),
+		},
+	}
+}
+
+func LDAPGroupToGin(group LDAPGroup) gin.H {
+	return gin.H{
+		"dn": group.DN,
+		"attributes": gin.H{
+			"cn":     group.Attributes.CN,
+			"member": group.Attributes.Member,
+		},
+	}
+}
+
+type UserOptional struct { // add or modify user body struct
 	CN           string `form:"cn"`
 	SN           string `form:"sn"`
+	Mail         string `form:"mail"`
 	UserPassword string `form:"userpassword"`
 }
 
+type UserRequired struct { // add or modify user body struct
+	CN           string `form:"cn" binding:"required"`
+	SN           string `form:"sn" binding:"required"`
+	Mail         string `form:"mail" binding:"required"`
+	UserPassword string `form:"userpassword" binding:"required"`
+}
+
 type Group struct { // add or modify group body struct
 }
+
+func HandleResponse(response gin.H) gin.H {
+	if response["error"] != nil {
+		err := response["error"].(error)
+		LDAPerr := err.(*ldap.Error)
+		response["error"] = gin.H{
+			"code":    LDAPerr.ResultCode,
+			"result":  ldap.LDAPResultCodeMap[LDAPerr.ResultCode],
+			"message": LDAPerr.Err.Error(),
+		}
+		return response
+	} else {
+		return response
+	}
+}

configs/template.config.json

@@ -1,6 +1,7 @@
 {
     "listenPort": 80,
     "ldapURL": "ldap://localhost",
+    "startTLS": true,
     "basedn": "dc=example,dc=com",
     "sessionSecretKey": "super secret key",
     "sessionCookieName": "PAASLDAPAuthTicket",
@@ -8,6 +9,6 @@
         "path": "/",
         "httpOnly": true,
         "secure": false,
-        "maxAge": 7200000
+        "maxAge": 7200
     }
 }

go.mod

@@ -1,6 +1,6 @@
 module proxmoxaas-ldap
 
-go 1.22.4
+go 1.23.2
 
 require (
 	github.com/gin-contrib/sessions v1.0.1
@@ -11,35 +11,37 @@ require (
 
 require (
 	github.com/Azure/go-ntlmssp v0.0.0-20221128193559-754e69321358 // indirect
-	github.com/bytedance/sonic v1.11.8 // indirect
+	github.com/bytedance/sonic v1.12.3 // indirect
-	github.com/bytedance/sonic/loader v0.1.1 // indirect
+	github.com/bytedance/sonic/loader v0.2.1 // indirect
 	github.com/cloudwego/base64x v0.1.4 // indirect
 	github.com/cloudwego/iasm v0.2.0 // indirect
-	github.com/gabriel-vasile/mimetype v1.4.4 // indirect
+	github.com/gabriel-vasile/mimetype v1.4.6 // indirect
 	github.com/gin-contrib/sse v0.1.0 // indirect
 	github.com/go-asn1-ber/asn1-ber v1.5.7 // 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 v10.22.0 // indirect
+	github.com/go-playground/validator/v10 v10.22.1 // indirect
 	github.com/goccy/go-json v0.10.3 // indirect
+	github.com/google/go-cmp v0.6.0 // 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 v1.3.0 // indirect
+	github.com/gorilla/sessions v1.4.0 // indirect
 	github.com/json-iterator/go v1.1.12 // indirect
 	github.com/klauspost/cpuid/v2 v2.2.8 // indirect
+	github.com/knz/go-libedit v1.10.1 // indirect
 	github.com/leodido/go-urn v1.4.0 // indirect
 	github.com/mattn/go-isatty v0.0.20 // 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 v2.2.2 // indirect
+	github.com/pelletier/go-toml/v2 v2.2.3 // indirect
 	github.com/twitchyliquid64/golang-asm v0.15.1 // indirect
 	github.com/ugorji/go/codec v1.2.12 // indirect
-	golang.org/x/arch v0.8.0 // indirect
+	golang.org/x/arch v0.11.0 // indirect
-	golang.org/x/crypto v0.24.0 // indirect
+	golang.org/x/crypto v0.28.0 // indirect
-	golang.org/x/net v0.26.0 // indirect
+	golang.org/x/net v0.30.0 // indirect
-	golang.org/x/sys v0.21.0 // indirect
+	golang.org/x/sys v0.26.0 // indirect
-	golang.org/x/text v0.16.0 // indirect
+	golang.org/x/text v0.19.0 // indirect
-	google.golang.org/protobuf v1.34.2 // indirect
+	google.golang.org/protobuf v1.35.1 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )

scripts/Makefile

@@ -0,0 +1,18 @@
+.PHONY: prerequisites dev-init dev-reinit
+
+prerequisites:
+	@echo "=================== Installing Prerequisites ==================="
+	apt install debconf-utils slapd ldap-utils sudo gettext
+	git clone https://git.tronnet.net/tronnet/open-ldap-setup
+	cd open-ldap-setup/; bash gencert.sh < ../gencert.conf;
+	rm -rf open-ldap-setup/
+
+dev-init: prerequisites dev-reinit
+
+dev-reinit:
+	@echo "====================== Initializing Slapd ======================"
+	cat debconf-slapd.conf | debconf-set-selections
+	DEBIAN_FRONTEND=noninteractive dpkg-reconfigure slapd
+	git clone https://git.tronnet.net/tronnet/open-ldap-setup
+	cd open-ldap-setup/; bash setup.sh < ../setup.conf;
+	rm -rf open-ldap-setup/

scripts/debconf-slapd.conf

@@ -0,0 +1,16 @@
+slapd slapd/password1 password admin
+slapd slapd/internal/adminpw password admin
+slapd slapd/internal/generated_adminpw password admin
+slapd slapd/password2 password admin
+slapd slapd/unsafe_selfwrite_acl note
+slapd slapd/purge_database boolean true
+slapd slapd/domain string test.paasldap
+slapd slapd/ppolicy_schema_needs_update select abort installation
+slapd slapd/invalid_config boolean true
+slapd slapd/move_old_database boolean true
+slapd slapd/backend select MDB
+slapd shared/organization string paasldap
+slapd slapd/dump_database_destdir string /var/backups/slapd-VERSION
+slapd slapd/no_configuration boolean false
+slapd slapd/dump_database select when needed
+slapd slapd/password_mismatch note

scripts/gencert.conf

@@ -0,0 +1,2 @@
+paasldap
+localhost

scripts/setup.conf

@@ -0,0 +1,10 @@
+dc=test,dc=paasldap
+adminuser
+adminuser@test.paasldap
+admin
+user
+admin123
+admin123
+/etc/ssl/certs/ldap-ca-cert.pem
+/etc/ldap/ldap-server-cert.pem
+/etc/ldap/ldap-server-key.pem

test/bad_config.json

@@ -0,0 +1 @@
+{,,}

test/test_config.json

@@ -0,0 +1,14 @@
+{
+    "listenPort": 80,
+    "ldapURL": "ldap://localhost",
+    "startTLS": true,
+    "basedn": "dc=test,dc=paasldap",
+    "sessionSecretKey": "test",
+    "sessionCookieName": "PAASLDAPAuthTicket",
+    "sessionCookie": {
+        "path": "/",
+        "httpOnly": true,
+        "secure": false,
+        "maxAge": 7200
+    }
+}

test/test_utils.go

@@ -0,0 +1,156 @@
+package tests
+
+import (
+	"fmt"
+	"math/rand"
+	"net/http"
+	"proxmoxaas-ldap/app"
+	"reflect"
+	"testing"
+
+	"github.com/gin-gonic/gin"
+	"github.com/go-ldap/ldap/v3"
+)
+
+func RandInt(min int, max int) int {
+	return rand.Intn(max+1-min) + min
+}
+
+func RandString(n int) string {
+	var letters = []rune("0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ")
+	b := make([]rune, n)
+	for i := range b {
+		b[i] = letters[rand.Intn(len(letters))]
+	}
+	return string(b)
+}
+
+// random ldap style DN
+func RandDN(n int) string {
+	return fmt.Sprintf("cn=%s,ou=%s,dc=%s,dc=%s", RandString(n), RandString(n), RandString(n), RandString(n))
+}
+
+// typically for testing values of a variable
+func AssertEquals[T comparable](t *testing.T, label string, a T, b T) {
+	t.Helper()
+	if a != b {
+		t.Errorf(`%s = %#v; expected %#v.`, label, a, b)
+	}
+}
+
+// asserting the success or failure of a generic error
+func AssertError(t *testing.T, label string, gotErr error, expectErr error) {
+	t.Helper()
+	if gotErr != nil && expectErr != nil {
+		if gotErr.Error() != expectErr.Error() {
+			t.Errorf(`%s returned %s; expected %s`, label, gotErr.Error(), expectErr.Error())
+		}
+	} else {
+		if gotErr != expectErr {
+			t.Errorf(`%s returned %s; expected %s`, label, gotErr.Error(), expectErr.Error())
+		}
+	}
+}
+
+// typically for asserting the success or failure of an ldap result
+func AssertLDAPError(t *testing.T, label string, gotErr any, expectErrCode uint16) {
+	t.Helper()
+	expectError := ldap.LDAPResultCodeMap[expectErrCode]
+	if expectErrCode == ldap.LDAPResultSuccess { // expect success
+		if gotErr != nil { // got an error
+			gotErr := gotErr.(error)
+			t.Errorf(`%s returned %s; expected %s.`, label, gotErr.Error(), "success")
+		} // did not get an error
+	} else { // expect error
+		if gotErr == nil { // did not get an error
+			t.Errorf(`%s returned %s; expected %s.`, label, "success", expectError)
+			return
+		}
+		gotErr := gotErr.(error)
+		if !ldap.IsErrorWithCode(gotErr, expectErrCode) { // got an error that does not match the expected error
+			t.Errorf(`%s returned %s; expected %s.`, label, gotErr.Error(), expectError)
+		} // got the expected error
+	}
+}
+
+// typically for asserting the success or failure of an http result
+func AssertStatus(t *testing.T, label string, gotCode int, expectCode int) {
+	t.Helper()
+	if expectCode == http.StatusOK {
+		if gotCode != http.StatusOK { // got an error
+			t.Errorf(`%s returned %d; expected %d.`, label, gotCode, expectCode)
+		}
+	} else { // expect error
+		if gotCode == http.StatusOK { // did not get an error
+			t.Errorf(`%s returned %d; expected %d.`, label, gotCode, expectCode)
+		} else if gotCode != expectCode { // got an error that does not match the expected error
+			t.Errorf(`%s returned %d; expected %d.`, label, gotCode, expectCode)
+		}
+	}
+}
+
+// compare if two users are equal, accepts LDAPUser or gin.H
+func AssertLDAPUserEquals(t *testing.T, label string, a any, b app.LDAPUser) {
+	t.Helper()
+
+	aObj, ok := a.(app.LDAPUser)
+	if ok {
+		if !reflect.DeepEqual(aObj, b) {
+			t.Errorf(`%s = %#v; expected %#v.`, label, aObj, b)
+		}
+		return
+	}
+
+	aGin, ok := a.(gin.H)
+	if ok {
+		bGin := app.LDAPUserToGin(b)
+		if !reflect.DeepEqual(aGin, bGin) {
+			t.Errorf(`%s = %#v; expected %#v.`, label, aGin, bGin)
+		}
+		return
+	}
+
+	// not a supported type
+	t.Errorf(`%s = %#v; expected %#v.`, label, a, b)
+}
+
+// compare if two users are equal, accepts LDAPUser or gin.H
+func AssertLDAPGroupEquals(t *testing.T, label string, a any, b app.LDAPGroup) {
+	t.Helper()
+
+	aObj, ok := a.(app.LDAPGroup)
+	if ok {
+		if !reflect.DeepEqual(aObj, b) {
+			t.Errorf(`%s = %#v; expected %#v.`, label, aObj, b)
+		}
+		return
+	}
+
+	aGin, ok := a.(gin.H)
+	if ok {
+		bGin := app.LDAPGroupToGin(b)
+		if !reflect.DeepEqual(aGin, bGin) {
+			t.Errorf(`%s = %#v; expected %#v.`, label, aGin, bGin)
+		}
+		return
+	}
+
+	// not a supported type
+	t.Errorf(`%s = %#v; expected %#v.`, label, a, b)
+}
+
+var _config, _ = app.GetConfig("test_config.json")
+var BaseDN = _config.BaseDN
+var PeopleDN = fmt.Sprintf("ou=people,%s", BaseDN)
+var GroupDN = fmt.Sprintf("ou=groups,%s", BaseDN)
+
+type User struct {
+	username string
+	password string
+	userObj  app.LDAPUser
+}
+
+type Group struct {
+	groupname string
+	groupObj  app.LDAPGroup
+}

test/unit_test.go

@@ -0,0 +1,126 @@
+package tests
+
+import (
+	"errors"
+	"fmt"
+	app "proxmoxaas-ldap/app"
+	"testing"
+
+	"github.com/gin-gonic/gin"
+	"github.com/go-ldap/ldap/v3"
+)
+
+// test the GetConfig utility function because it used in other tests
+func TestConfig_ValidPath(t *testing.T) {
+	config, err := app.GetConfig("test_config.json")
+
+	AssertError(t, "GetConfig()", err, nil)
+	AssertEquals(t, "config.ListenPort", config.ListenPort, 80)
+	AssertEquals(t, "config.LdapURL", config.LdapURL, "ldap://localhost")
+	AssertEquals(t, "config.BaseDN", config.BaseDN, "dc=test,dc=paasldap")
+	AssertEquals(t, "config.SessionSecretKey", config.SessionSecretKey, "test")
+	AssertEquals(t, "config.SessionCookieName", config.SessionCookieName, "PAASLDAPAuthTicket")
+	AssertEquals(t, "config.SessionCookie.Path", config.SessionCookie.Path, "/")
+	AssertEquals(t, "config.SessionCookie.HttpOnly", config.SessionCookie.HttpOnly, true)
+	AssertEquals(t, "config.SessionCookie.Secure", config.SessionCookie.Secure, false)
+	AssertEquals(t, "config.SessionCookie.MaxAge", config.SessionCookie.MaxAge, 7200)
+}
+
+func TestConfig_InvalidPath(t *testing.T) {
+	badFileName := RandString(16)
+	_, err := app.GetConfig(badFileName)
+	expectedErr := fmt.Errorf("open %s: no such file or directory", badFileName)
+	AssertError(t, "GetConfig()", err, expectedErr)
+
+	_, err = app.GetConfig("bad_config.json")
+	expectedErr = fmt.Errorf("invalid character ',' looking for beginning of object key string")
+	AssertError(t, "GetConfig()", err, expectedErr)
+}
+
+// test the LDAPEntryToUser and LDAPUserToGin utility functions
+func TestLDAPUserDataPipeline(t *testing.T) {
+	var memberOf []string
+	for i := 0; i < RandInt(5, 20); i++ {
+		memberOf = append(memberOf, RandDN(16))
+	}
+
+	expectedUser := app.LDAPUser{
+		DN: RandDN(16),
+		Attributes: app.LDAPUserAttributes{
+			CN:       RandString(16),
+			SN:       RandString(16),
+			Mail:     RandString(16),
+			UID:      RandString(16),
+			MemberOf: memberOf,
+		},
+	}
+
+	attributes := make(map[string][]string)
+	attributes["cn"] = []string{expectedUser.Attributes.CN}
+	attributes["sn"] = []string{expectedUser.Attributes.SN}
+	attributes["mail"] = []string{expectedUser.Attributes.Mail}
+	attributes["uid"] = []string{expectedUser.Attributes.UID}
+	attributes["memberOf"] = expectedUser.Attributes.MemberOf
+
+	entry := ldap.NewEntry(expectedUser.DN, attributes)
+
+	user := app.LDAPEntryToLDAPUser(entry)
+	AssertLDAPUserEquals(t, "LDAPEntryToLDAPUser(entry) -> user", user, expectedUser)
+
+	json := app.LDAPUserToGin(user)
+	AssertLDAPUserEquals(t, "LDAPUserToGin(user) -> json", json, expectedUser)
+}
+
+// test the LDAPEntryToGroup and LDAPGroupToGin utility functions
+func TestLDAPGroupDataPipeline(t *testing.T) {
+	var member []string
+	for i := 0; i < RandInt(5, 20); i++ {
+		member = append(member, RandDN(16))
+	}
+
+	expectedGroup := app.LDAPGroup{
+		DN: RandDN(16),
+		Attributes: app.LDAPGroupAttributes{
+			Member: member,
+		},
+	}
+
+	attributes := make(map[string][]string)
+	attributes["member"] = expectedGroup.Attributes.Member
+
+	entry := ldap.NewEntry(expectedGroup.DN, attributes)
+
+	group := app.LDAPEntryToLDAPGroup(entry)
+	AssertLDAPGroupEquals(t, "LDAPEntryToLDAPGroup(entry) -> group", group, expectedGroup)
+
+	json := app.LDAPGroupToGin(group)
+	AssertLDAPGroupEquals(t, "LDAPGroupToGin(group) -> json", json, expectedGroup)
+}
+
+func TestHandleResponse(t *testing.T) {
+	for errorCode := range ldap.LDAPResultCodeMap {
+		expectedMessage := RandString(16)
+		LDAPerr := ldap.NewError(errorCode, errors.New(expectedMessage))
+		res := gin.H{
+			"error": LDAPerr,
+		}
+		LDAPResult := ldap.LDAPResultCodeMap[errorCode]
+
+		handledResponseError := (app.HandleResponse(res))["error"].(gin.H)
+
+		AssertEquals(t, `HandleResponse(res)["error"]["code"]`, handledResponseError["code"].(uint16), errorCode)
+		AssertEquals(t, `HandleResponse(res)["error"]["result"]`, handledResponseError["result"].(string), LDAPResult)
+		AssertEquals(t, `HandleResponse(res)["error"]["message"]`, handledResponseError["message"].(string), expectedMessage)
+	}
+
+	res := gin.H{
+		"ok":     true,
+		"status": RandInt(0, 600),
+	}
+
+	handledResponse := app.HandleResponse(res)
+
+	AssertEquals(t, `HandleResponse(res)["ok"]`, handledResponse["ok"].(bool), res["ok"].(bool))
+	AssertEquals(t, `HandleResponse(res)["satus"]`, handledResponse["status"].(int), res["status"].(int))
+	AssertEquals(t, `HandleResponse(res)["error"]`, handledResponse["error"], nil)
+}