permission: mark const functions as such

Otherwise, non-mutating functions such as is_tree_granted unnecessarily
require pointers to mutable data structures.

PR-URL: #50705
Reviewed-By: Rafael Gonzaga <rafael.nunu@hotmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Vinícius Lourenço Claro Cardoso <contact@viniciusl.com.br>

Author: tniessen

src/permission/child_process_permission.cc

@@ -15,7 +15,7 @@ void ChildProcessPermission::Apply(const std::vector<std::string>& allow,
 }
 
 bool ChildProcessPermission::is_granted(PermissionScope perm,
-                                        const std::string_view& param) {
+                                        const std::string_view& param) const {
   return deny_all_ == false;
 }
 

src/permission/child_process_permission.h

@@ -15,7 +15,7 @@ class ChildProcessPermission final : public PermissionBase {
   void Apply(const std::vector<std::string>& allow,
              PermissionScope scope) override;
   bool is_granted(PermissionScope perm,
-                  const std::string_view& param = "") override;
+                  const std::string_view& param = "") const override;
 
  private:
   bool deny_all_;

src/permission/fs_permission.cc

@@ -50,8 +50,9 @@ void FreeRecursivelyNode(
   delete node;
 }
 
-bool is_tree_granted(node::permission::FSPermission::RadixTree* granted_tree,
-                     const std::string_view& param) {
+bool is_tree_granted(
+    const node::permission::FSPermission::RadixTree* granted_tree,
+    const std::string_view& param) {
 #ifdef _WIN32
   // is UNC file path
   if (param.rfind("\\\\", 0) == 0) {
@@ -147,7 +148,7 @@ void FSPermission::GrantAccess(PermissionScope perm, const std::string& res) {
 }
 
 bool FSPermission::is_granted(PermissionScope perm,
-                              const std::string_view& param = "") {
+                              const std::string_view& param = "") const {
   switch (perm) {
     case PermissionScope::kFileSystem:
       return allow_all_in_ && allow_all_out_;
@@ -171,7 +172,7 @@ FSPermission::RadixTree::~RadixTree() {
 }
 
 bool FSPermission::RadixTree::Lookup(const std::string_view& s,
-                                     bool when_empty_return = false) {
+                                     bool when_empty_return = false) const {
   FSPermission::RadixTree::Node* current_node = root_node_;
   if (current_node->children.size() == 0) {
     return when_empty_return;

src/permission/fs_permission.h

@@ -17,7 +17,8 @@ class FSPermission final : public PermissionBase {
  public:
   void Apply(const std::vector<std::string>& allow,
              PermissionScope scope) override;
-  bool is_granted(PermissionScope perm, const std::string_view& param) override;
+  bool is_granted(PermissionScope perm,
+                  const std::string_view& param) const override;
 
   struct RadixTree {
     struct Node {
@@ -72,7 +73,7 @@ class FSPermission final : public PermissionBase {
         return wildcard_child;
       }
 
-      Node* NextNode(const std::string& path, size_t idx) {
+      Node* NextNode(const std::string& path, size_t idx) const {
         if (idx >= path.length()) {
           return nullptr;
         }
@@ -115,7 +116,7 @@ class FSPermission final : public PermissionBase {
       // ---> '\000' ASCII (0) || \0
       // ---> er
       // ---> n
-      bool IsEndNode() {
+      bool IsEndNode() const {
         if (children.size() == 0) {
           return true;
         }
@@ -126,8 +127,8 @@ class FSPermission final : public PermissionBase {
     RadixTree();
     ~RadixTree();
     void Insert(const std::string& s);
-    bool Lookup(const std::string_view& s) { return Lookup(s, false); }
-    bool Lookup(const std::string_view& s, bool when_empty_return);
+    bool Lookup(const std::string_view& s) const { return Lookup(s, false); }
+    bool Lookup(const std::string_view& s, bool when_empty_return) const;
 
    private:
     Node* root_node_;

src/permission/inspector_permission.cc

@@ -14,7 +14,7 @@ void InspectorPermission::Apply(const std::vector<std::string>& allow,
 }
 
 bool InspectorPermission::is_granted(PermissionScope perm,
-                                     const std::string_view& param) {
+                                     const std::string_view& param) const {
   return deny_all_ == false;
 }
 

src/permission/inspector_permission.h

@@ -15,7 +15,7 @@ class InspectorPermission final : public PermissionBase {
   void Apply(const std::vector<std::string>& allow,
              PermissionScope scope) override;
   bool is_granted(PermissionScope perm,
-                  const std::string_view& param = "") override;
+                  const std::string_view& param = "") const override;
 
  private:
   bool deny_all_;

src/permission/permission_base.h

@@ -42,7 +42,7 @@ class PermissionBase {
   virtual void Apply(const std::vector<std::string>& allow,
                      PermissionScope scope) = 0;
   virtual bool is_granted(PermissionScope perm,
-                          const std::string_view& param = "") = 0;
+                          const std::string_view& param = "") const = 0;
 };
 
 }  // namespace permission

src/permission/worker_permission.cc

@@ -15,7 +15,7 @@ void WorkerPermission::Apply(const std::vector<std::string>& allow,
 }
 
 bool WorkerPermission::is_granted(PermissionScope perm,
-                                  const std::string_view& param) {
+                                  const std::string_view& param) const {
   return deny_all_ == false;
 }
 

src/permission/worker_permission.h

@@ -15,7 +15,7 @@ class WorkerPermission final : public PermissionBase {
   void Apply(const std::vector<std::string>& allow,
              PermissionScope scope) override;
   bool is_granted(PermissionScope perm,
-                  const std::string_view& param = "") override;
+                  const std::string_view& param = "") const override;
 
  private:
   bool deny_all_;