优化登录和权限检查逻辑，增加用户存在性验证，改进错误处理

src/db/auth.cpp

@@ -86,7 +86,7 @@ extern "C"
         auto value  = std::string{};
         auto status = user_db->Get(leveldb::ReadOptions{}, mangle_user_id(user_id), &value);
         if (!status.ok()) {
-            std::println(stderr, "Failed to login: {}", status.ToString());
+            if (!status.IsNotFound()) std::println(stderr, "Failed to login: {}", status.ToString());
             return 0;
         }
         *result = validate_password(password, value.data());
@@ -132,7 +132,7 @@ extern "C"
         if (status.ok()) {
             *result = std::stoi(value);
         } else {
-            std::println(stderr, "Failed to get user permission: {}", status.ToString());
+            if (!status.IsNotFound()) std::println(stderr, "Failed to get user permission: {}", status.ToString());
             return 0;
         }
         return 1;

src/server/auth/admin.c

@@ -55,6 +55,8 @@ static int field_get(const char* key, const char* value, size_t valuelen, void*
         form->user_id = kqm_strndup(value, valuelen);
     } else if (strcmp(key, "raw_passwd") == 0) {
         form->raw_passwd = kqm_strndup(value, valuelen);
+    } else if (strcmp(key, "new_passwd") == 0) {
+        form->new_passwd = kqm_strndup(value, valuelen);
     } else if (strcmp(key, "permission") == 0) {
         form->permission = kqm_strndup(value, valuelen);
     }
@@ -89,10 +91,12 @@ static void impl_repasswd(mg_connection* conn, admin_form_t* form)
     }
 
     int result;
-    if (!admin_login(form->password, &result)) {
+    if (!admin_login(form->raw_passwd, &result)) {
         res_unauth(conn);
+        return;
     } else if (!result) {
         res_incorrect(conn);
+        return;
     }
 
     if (!set_admin_password(form->new_passwd)) {
@@ -113,7 +117,17 @@ static void impl_repasswd2(mg_connection* conn, admin_form_t* form)
         return;
     }
 
-    int flag = set_user_password(form->user_id, form->new_passwd);
+    int result;
+    int flag = check_user_exists(form->user_id, &result);
+    if (!flag) {
+        res_check_exist_fail(conn);
+        return;
+    } else if (!result) {
+        res_not_exist(conn);
+        return;
+    }
+
+    flag = set_user_password(form->user_id, form->new_passwd);
     if (!flag) {
         res_repasswd_fail(conn);
     } else {
@@ -147,7 +161,17 @@ static void impl_delete(mg_connection* conn, admin_form_t* form)
         return;
     }
 
-    int flag = delete_user(form->user_id);
+    int result;
+    int flag = check_user_exists(form->user_id, &result);
+    if (!flag) {
+        res_check_exist_fail(conn);
+        return;
+    } else if (!result) {
+        res_not_exist(conn);
+        return;
+    }
+
+    flag = delete_user(form->user_id);
     if (!flag) {
         res_delete_account_fail(conn);
     } else {
@@ -155,6 +179,11 @@ static void impl_delete(mg_connection* conn, admin_form_t* form)
     }
 }
 
+static void impl_auth(mg_connection* conn, admin_form_t* form)
+{
+    res_auth(conn);
+}
+
 
 int admin_handler(mg_connection* conn, void* cbdata)
 {
@@ -181,17 +210,20 @@ int admin_handler(mg_connection* conn, void* cbdata)
 
     mg_handle_form_request(conn, &admin_callback);
 
-    if (form.action && !strcmp(form.action, "login")) {
-        form.token    = strdup("");
+    if (!admin_session) {
         admin_session = strdup("");
     }
 
+    if (form.action && !strcmp(form.action, "login")) {
+        form.token = strdup(admin_session);
+    }
+
     if (!form.action) {
         res_need_action(conn);
     } else if (!form.token) {
         res_need_token(conn);
     } else if (!admin_session || strcmp(form.token, admin_session)) {
-        res_permission_denied(conn);
+        res_auth_fail(conn);
     } else {
         if (!strcmp(form.action, "login")) {
             impl_login(conn, &form);
@@ -203,6 +235,8 @@ int admin_handler(mg_connection* conn, void* cbdata)
             impl_permission(conn, &form);
         } else if (!strcmp(form.action, "delete")) {
             impl_delete(conn, &form);
+        } else if (!strcmp(form.action, "auth")) {
+            impl_auth(conn, &form);
         } else {
             res_bad_action(conn);
         }

src/server/auth/repasswd.c

@@ -1,5 +1,6 @@
 #include "server/auth.h"
 #include "server/response.h"
+#include "server/types.h"
 #include "server/util.h"
 
 
@@ -54,6 +55,60 @@ static int field_get(const char* key, const char* value, size_t valuelen, void*
     return MG_FORM_FIELD_HANDLE_GET;
 }
 
+static void impl_self(mg_connection* conn, const char* user_id, repasswd_form_t* form)
+{
+    int result;
+    int flag = login(user_id, form->raw_passwd, &result);
+    if (!flag) {
+        res_repasswd_fail(conn);
+    } else {
+        if (result) {
+            flag = set_user_password(user_id, form->new_passwd);
+            if (!flag) {
+                res_repasswd_fail(conn);
+            } else {
+                res_repasswd(conn);
+            }
+        } else {
+            res_incorrect(conn);
+        }
+    }
+}
+
+static void impl_others(mg_connection* conn, const char* user_id, repasswd_form_t* form)
+{
+    int result1, result2;
+    int flag  = check_user_exists(user_id, &result1);
+    flag     &= check_user_exists(form->user_id, &result2);
+    if (!flag) {
+        res_check_exist_fail(conn);
+        return;
+    }
+    if (!(result1 && result2)) {
+        res_not_exist(conn);
+        return;
+    }
+
+    int perm1, perm2;
+    flag  = get_user_permission(user_id, &perm1);
+    flag &= get_user_permission(form->user_id, &perm2);
+    if (!flag) {
+        res_check_permission_fail(conn);
+        return;
+    }
+
+    if (perm1 == 1 && perm2 == 2) {
+        int flag = set_user_password(form->user_id, form->new_passwd);
+        if (!flag) {
+            res_repasswd_fail(conn);
+        } else {
+            res_repasswd(conn);
+        }
+    } else {
+        res_permission_denied(conn);
+    }
+}
+
 int user_repasswd_handler(mg_connection* conn, void* cbdata)
 {
     const mg_request_info* post_body = mg_get_request_info(conn);
@@ -97,45 +152,9 @@ int user_repasswd_handler(mg_connection* conn, void* cbdata)
     char* user_id = get_payload(form.token);
 
     if (form.user_id && strcmp(user_id, form.user_id)) {
-        int perm1;
-        int flag = get_user_permission(user_id, &perm1);
-        if (!flag) {
-            res_check_permission_fail(conn);
-        }
-
-        int perm2;
-        flag = get_user_permission(form.user_id, &perm2);
-        if (!flag) {
-            res_check_permission_fail(conn);
-        }
-
-        if (perm1 < perm2) {
-            int flag = set_user_password(form.user_id, form.new_passwd);
-            if (!flag) {
-                res_repasswd_fail(conn);
-            } else {
-                res_repasswd(conn);
-            }
-        } else {
-            res_permission_denied(conn);
-        }
+        impl_others(conn, user_id, &form);
     } else if (form.raw_passwd) {
-        int result;
-        int flag = login(user_id, form.raw_passwd, &result);
-        if (!flag) {
-            res_repasswd_fail(conn);
-        } else {
-            if (result) {
-                flag = set_user_password(user_id, form.new_passwd);
-                if (!flag) {
-                    res_repasswd_fail(conn);
-                } else {
-                    res_repasswd(conn);
-                }
-            } else {
-                res_incorrect(conn);
-            }
-        }
+        impl_self(conn, user_id, &form);
     } else {
         res_need_password(conn);
     }

ui/src/components/admin/Permission.vue

@@ -13,7 +13,7 @@
         <v-divider :thickness="10" class="border-opacity-0"></v-divider>
 
         <v-btn :loading="loading" class="mb-8" color="blue" size="large" type="submit" variant="tonal" block>
-          修改密码
+          修改权限
         </v-btn>
 
       </v-form>