feat: assign per-user WebDAV paths

admin_users.go

@@ -3,6 +3,7 @@ package main
 import (
 	"errors"
 	"fmt"
+	"regexp"
 	"strconv"
 	"strings"
 
@@ -14,6 +15,8 @@ func (a *App) audit(operator uint, action, targetType, targetID, metadata string
 	_ = a.db.Create(&AuditLog{OperatorID: operator, Action: action, TargetType: targetType, TargetID: targetID, Metadata: metadata}).Error
 }
 
+var usernamePattern = regexp.MustCompile(`^[A-Za-z]{4,10}$`)
+
 func defaultPermissions(role string) []string {
 	if role == RolePrivileged {
 		return []string{PermDownload, PermRedeem, PermWebDAV, PermWebDAVConfig}
@@ -59,8 +62,13 @@ func (a *App) adminCreateUser(c *gin.Context) {
 		Role     string `json:"role"`
 		Credits  int64  `json:"credits"`
 	}
-	if c.BindJSON(&in) != nil || strings.TrimSpace(in.Username) == "" || len(in.Password) < 8 {
+	if c.BindJSON(&in) != nil {
-		c.JSON(400, gin.H{"error": "username and password(8+) required"})
+		c.JSON(400, gin.H{"error": "invalid request body"})
+		return
+	}
+	in.Username = strings.TrimSpace(in.Username)
+	if !usernamePattern.MatchString(in.Username) || len(in.Password) < 8 {
+		c.JSON(400, gin.H{"error": "username must be 4-10 English letters and password must be 8+ characters"})
 		return
 	}
 	if in.Role == "" {
@@ -78,10 +86,16 @@ func (a *App) adminCreateUser(c *gin.Context) {
 	admin := c.MustGet("user").(*User)
 	var u User
 	err = a.db.Transaction(func(tx *gorm.DB) error {
-		u = User{Username: strings.TrimSpace(in.Username), PasswordHash: hash, Role: in.Role, Status: UserActive}
+		u = User{Username: in.Username, PasswordHash: hash, Role: in.Role, Status: UserActive}
 		if err := tx.Create(&u).Error; err != nil {
 			return err
 		}
+		if in.Role != RoleAdmin {
+			root := cleanWebDAVRoot(strings.TrimRight(a.cfg.WebDAVPath, "/") + "/" + u.Username)
+			if err := tx.Create(&WebDAVConfig{UserID: u.ID, Enabled: true, RootPath: root}).Error; err != nil {
+				return err
+			}
+		}
 		if err := tx.Create(&CreditAccount{UserID: u.ID, Balance: in.Credits}).Error; err != nil {
 			return err
 		}

main.go

@@ -22,6 +22,7 @@ func main() {
 	a := &App{db: db, cfg: cfg, queue: make(chan uint, 100), httpClient: client}
 	a.loadSettings()
 	a.bootstrapAdmin()
+	must(a.initializeUserWebDAVDefaults())
 	must(backfillMediaAssets(db, a.cfg.DownloadDir))
 	if os.Getenv("MIGRATION_CHECK") == "1" {
 		var users, tasks, assets int64

user_webdav.go

@@ -7,6 +7,7 @@ import (
 
 	"github.com/gin-gonic/gin"
 	"github.com/studio-b12/gowebdav"
+	"gorm.io/gorm"
 )
 
 func cleanWebDAVRoot(root string) string {
@@ -18,6 +19,28 @@ func cleanWebDAVRoot(root string) string {
 	return strings.Trim(root, "/")
 }
 
+func (a *App) initializeUserWebDAVDefaults() error {
+	var users []User
+	if err := a.db.Where("role <> ?", RoleAdmin).Find(&users).Error; err != nil {
+		return err
+	}
+	for _, user := range users {
+		var cfg WebDAVConfig
+		err := a.db.Where("user_id = ?", user.ID).First(&cfg).Error
+		if err == nil {
+			continue
+		}
+		if err != gorm.ErrRecordNotFound {
+			return err
+		}
+		root := cleanWebDAVRoot(strings.TrimRight(a.cfg.WebDAVPath, "/") + "/" + user.Username)
+		if err := a.db.Create(&WebDAVConfig{UserID: user.ID, Enabled: true, RootPath: root}).Error; err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
 func (a *App) getUserWebDAV(c *gin.Context) {
 	user := c.MustGet("user").(*User)
 	var cfg WebDAVConfig
@@ -98,6 +121,10 @@ func (a *App) storageForTask(t *Task) (RemoteStorage, string, bool) {
 		if a.cfg.WebDAVURL == "" || a.storage == nil {
 			return nil, "", false
 		}
+		var cfg WebDAVConfig
+		if a.db.Where("user_id = ?", user.ID).First(&cfg).Error == nil && cfg.RootPath != "" {
+			return a.storage, cfg.RootPath, true
+		}
 		return a.storage, a.cfg.WebDAVPath, true
 	}
 	if user.Role == RoleAdmin {
@@ -107,13 +134,24 @@ func (a *App) storageForTask(t *Task) (RemoteStorage, string, bool) {
 		return a.storage, a.cfg.WebDAVPath, true
 	}
 	var cfg WebDAVConfig
-	if a.db.Where("user_id = ? AND enabled = ?", user.ID, true).First(&cfg).Error != nil || cfg.URL == "" {
+	if a.db.Where("user_id = ? AND enabled = ?", user.ID, true).First(&cfg).Error != nil {
 		// Privileged users fall back to the global WebDAV until a custom
-		// WebDAV configuration is enabled and tested successfully.
+		// WebDAV configuration is enabled.
 		if a.cfg.WebDAVURL == "" || a.storage == nil {
 			return nil, "", false
 		}
 		return a.storage, a.cfg.WebDAVPath, true
 	}
+	if cfg.URL == "" {
+		// An empty URL means this user inherits the global WebDAV connection,
+		// while keeping the user's own destination path.
+		if a.cfg.WebDAVURL == "" || a.storage == nil {
+			return nil, "", false
+		}
+		if cfg.RootPath != "" {
+			return a.storage, cfg.RootPath, true
+		}
+		return a.storage, a.cfg.WebDAVPath, true
+	}
 	return NewWebDAVStorage(Config{WebDAVURL: cfg.URL, WebDAVUser: cfg.Username, WebDAVPass: cfg.Password}), cfg.RootPath, true
 }