Admin UI: Add policies (#6968)

* add policies to UI, accessing filer directly

* view, edit policies

* add back buttons for "users" page

* remove unused

* fix ui dark mode when modal is closed

* bucket view details button

* fix browser buttons

* filer action button works

* clean up masters page

* fix volume servers action buttons

* fix collections page action button

* fix properties page

* more obvious

* fix directory creation file mode

* Update file_browser_handlers.go

* directory permission

1 files changed, 273 insertions, 0 deletions

diff --git a/weed/admin/handlers/policy_handlers.go b/weed/admin/handlers/policy_handlers.go
new file mode 100644
index 000000000..8f5cc91b1
--- /dev/null
+++ b/weed/admin/handlers/policy_handlers.go
@@ -0,0 +1,273 @@
+package handlers
+
+import (
+	"fmt"
+	"net/http"
+	"time"
+
+	"github.com/gin-gonic/gin"
+	"github.com/seaweedfs/seaweedfs/weed/admin/dash"
+	"github.com/seaweedfs/seaweedfs/weed/admin/view/app"
+	"github.com/seaweedfs/seaweedfs/weed/admin/view/layout"
+	"github.com/seaweedfs/seaweedfs/weed/credential"
+	"github.com/seaweedfs/seaweedfs/weed/glog"
+)
+
+// PolicyHandlers contains all the HTTP handlers for policy management
+type PolicyHandlers struct {
+	adminServer *dash.AdminServer
+}
+
+// NewPolicyHandlers creates a new instance of PolicyHandlers
+func NewPolicyHandlers(adminServer *dash.AdminServer) *PolicyHandlers {
+	return &PolicyHandlers{
+		adminServer: adminServer,
+	}
+}
+
+// ShowPolicies renders the policies management page
+func (h *PolicyHandlers) ShowPolicies(c *gin.Context) {
+	// Get policies data from the server
+	policiesData := h.getPoliciesData(c)
+
+	// Render HTML template
+	c.Header("Content-Type", "text/html")
+	policiesComponent := app.Policies(policiesData)
+	layoutComponent := layout.Layout(c, policiesComponent)
+	err := layoutComponent.Render(c.Request.Context(), c.Writer)
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to render template: " + err.Error()})
+		return
+	}
+}
+
+// GetPolicies returns the list of policies as JSON
+func (h *PolicyHandlers) GetPolicies(c *gin.Context) {
+	policies, err := h.adminServer.GetPolicies()
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to get policies: " + err.Error()})
+		return
+	}
+	c.JSON(http.StatusOK, gin.H{"policies": policies})
+}
+
+// CreatePolicy handles policy creation
+func (h *PolicyHandlers) CreatePolicy(c *gin.Context) {
+	var req dash.CreatePolicyRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "Invalid request: " + err.Error()})
+		return
+	}
+
+	// Validate policy name
+	if req.Name == "" {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "Policy name is required"})
+		return
+	}
+
+	// Check if policy already exists
+	existingPolicy, err := h.adminServer.GetPolicy(req.Name)
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to check existing policy: " + err.Error()})
+		return
+	}
+	if existingPolicy != nil {
+		c.JSON(http.StatusConflict, gin.H{"error": "Policy with this name already exists"})
+		return
+	}
+
+	// Create the policy
+	err = h.adminServer.CreatePolicy(req.Name, req.Document)
+	if err != nil {
+		glog.Errorf("Failed to create policy %s: %v", req.Name, err)
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to create policy: " + err.Error()})
+		return
+	}
+
+	c.JSON(http.StatusCreated, gin.H{
+		"success": true,
+		"message": "Policy created successfully",
+		"policy":  req.Name,
+	})
+}
+
+// GetPolicy returns a specific policy
+func (h *PolicyHandlers) GetPolicy(c *gin.Context) {
+	policyName := c.Param("name")
+	if policyName == "" {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "Policy name is required"})
+		return
+	}
+
+	policy, err := h.adminServer.GetPolicy(policyName)
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to get policy: " + err.Error()})
+		return
+	}
+
+	if policy == nil {
+		c.JSON(http.StatusNotFound, gin.H{"error": "Policy not found"})
+		return
+	}
+
+	c.JSON(http.StatusOK, policy)
+}
+
+// UpdatePolicy handles policy updates
+func (h *PolicyHandlers) UpdatePolicy(c *gin.Context) {
+	policyName := c.Param("name")
+	if policyName == "" {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "Policy name is required"})
+		return
+	}
+
+	var req dash.UpdatePolicyRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "Invalid request: " + err.Error()})
+		return
+	}
+
+	// Check if policy exists
+	existingPolicy, err := h.adminServer.GetPolicy(policyName)
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to check existing policy: " + err.Error()})
+		return
+	}
+	if existingPolicy == nil {
+		c.JSON(http.StatusNotFound, gin.H{"error": "Policy not found"})
+		return
+	}
+
+	// Update the policy
+	err = h.adminServer.UpdatePolicy(policyName, req.Document)
+	if err != nil {
+		glog.Errorf("Failed to update policy %s: %v", policyName, err)
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to update policy: " + err.Error()})
+		return
+	}
+
+	c.JSON(http.StatusOK, gin.H{
+		"success": true,
+		"message": "Policy updated successfully",
+		"policy":  policyName,
+	})
+}
+
+// DeletePolicy handles policy deletion
+func (h *PolicyHandlers) DeletePolicy(c *gin.Context) {
+	policyName := c.Param("name")
+	if policyName == "" {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "Policy name is required"})
+		return
+	}
+
+	// Check if policy exists
+	existingPolicy, err := h.adminServer.GetPolicy(policyName)
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to check existing policy: " + err.Error()})
+		return
+	}
+	if existingPolicy == nil {
+		c.JSON(http.StatusNotFound, gin.H{"error": "Policy not found"})
+		return
+	}
+
+	// Delete the policy
+	err = h.adminServer.DeletePolicy(policyName)
+	if err != nil {
+		glog.Errorf("Failed to delete policy %s: %v", policyName, err)
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to delete policy: " + err.Error()})
+		return
+	}
+
+	c.JSON(http.StatusOK, gin.H{
+		"success": true,
+		"message": "Policy deleted successfully",
+		"policy":  policyName,
+	})
+}
+
+// ValidatePolicy validates a policy document without saving it
+func (h *PolicyHandlers) ValidatePolicy(c *gin.Context) {
+	var req struct {
+		Document credential.PolicyDocument `json:"document" binding:"required"`
+	}
+
+	if err := c.ShouldBindJSON(&req); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "Invalid request: " + err.Error()})
+		return
+	}
+
+	// Basic validation
+	if req.Document.Version == "" {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "Policy version is required"})
+		return
+	}
+
+	if len(req.Document.Statement) == 0 {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "Policy must have at least one statement"})
+		return
+	}
+
+	// Validate each statement
+	for i, statement := range req.Document.Statement {
+		if statement.Effect != "Allow" && statement.Effect != "Deny" {
+			c.JSON(http.StatusBadRequest, gin.H{
+				"error": fmt.Sprintf("Statement %d: Effect must be 'Allow' or 'Deny'", i+1),
+			})
+			return
+		}
+
+		if len(statement.Action) == 0 {
+			c.JSON(http.StatusBadRequest, gin.H{
+				"error": fmt.Sprintf("Statement %d: Action is required", i+1),
+			})
+			return
+		}
+
+		if len(statement.Resource) == 0 {
+			c.JSON(http.StatusBadRequest, gin.H{
+				"error": fmt.Sprintf("Statement %d: Resource is required", i+1),
+			})
+			return
+		}
+	}
+
+	c.JSON(http.StatusOK, gin.H{
+		"valid":   true,
+		"message": "Policy document is valid",
+	})
+}
+
+// getPoliciesData retrieves policies data from the server
+func (h *PolicyHandlers) getPoliciesData(c *gin.Context) dash.PoliciesData {
+	username := c.GetString("username")
+	if username == "" {
+		username = "admin"
+	}
+
+	// Get policies
+	policies, err := h.adminServer.GetPolicies()
+	if err != nil {
+		glog.Errorf("Failed to get policies: %v", err)
+		// Return empty data on error
+		return dash.PoliciesData{
+			Username:      username,
+			Policies:      []dash.IAMPolicy{},
+			TotalPolicies: 0,
+			LastUpdated:   time.Now(),
+		}
+	}
+
+	// Ensure policies is never nil
+	if policies == nil {
+		policies = []dash.IAMPolicy{}
+	}
+
+	return dash.PoliciesData{
+		Username:      username,
+		Policies:      policies,
+		TotalPolicies: len(policies),
+		LastUpdated:   time.Now(),
+	}
+}