.vscode/settings.json

@@ -12,6 +12,7 @@
         "editor.defaultFormatter": "dbaeumer.vscode-eslint"
     },
     "cSpell.words": [
-        "salix"
+        "salix",
+        "fdescribe"
     ]
 }

db/changes/234801/00-ACL_executeRoutine.sql

@@ -0,0 +1,4 @@
+INSERT INTO `salix`.`ACL` (model, property, accessType, permission, principalType, principalId)
+    VALUES
+        ('Application', 'executeProc', '*', 'ALLOW', 'ROLE', 'employee'),
+        ('Application', 'executeFunc', '*', 'ALLOW', 'ROLE', 'employee');

db/dump/structure.sql

@@ -2352,6 +2352,90 @@ BEGIN
 	END IF;
 END ;;
 DELIMITER ;
+
+
+DELIMITER ;;
+CREATE DEFINER=`root`@`localhost` FUNCTION `account`.`user_hasRoutinePriv`(vType ENUM('PROCEDURE', 'FUNCTION'),
+	vChain VARCHAR(100),
+	vUserFk INT
+) RETURNS tinyint(1)
+    READS SQL DATA
+BEGIN
+
+/**
+ * Search if the user has privileges on routines.
+ *
+ * @param vType procedure or function
+ * @param vChain string passed with this syntax dbName.tableName
+ * @param vUserFk user to ckeck
+ * @return vHasPrivilege
+ */
+	DECLARE vHasPrivilege BOOL DEFAULT FALSE;
+	DECLARE vDb VARCHAR(50);
+	DECLARE vObject VARCHAR(50);
+	DECLARE vChainExists BOOL;
+	DECLARE vExecutePriv INT DEFAULT 262144;
+	-- 262144 = CONV(1000000000000000000, 2, 10)
+	-- 1000000000000000000 execution permission expressed in binary base
+
+	SET vDb = SUBSTRING_INDEX(vChain, '.', 1);
+	SET vChain = SUBSTRING(vChain, LENGTH(vDb) + 2);
+	SET vObject = SUBSTRING_INDEX(vChain, '.', 1);
+
+	SELECT COUNT(*) INTO vChainExists
+		FROM mysql.proc
+			WHERE db = vDb
+				AND `name` = vObject
+				AND `type` = vType
+			LIMIT 1;
+
+	IF NOT vChainExists THEN
+		RETURN FALSE;
+	END IF;
+
+	DROP TEMPORARY TABLE IF EXISTS tRole;
+	CREATE TEMPORARY TABLE tRole
+		(INDEX (`name`))
+		ENGINE = MEMORY
+		SELECT r.`name`
+			FROM user u
+				JOIN roleRole rr ON rr.role = u.role
+				JOIN `role` r ON r.id = rr.inheritsFrom
+			WHERE u.id = vUserFk;
+
+	SELECT TRUE INTO vHasPrivilege
+		FROM mysql.global_priv gp
+			JOIN tRole tr ON tr.name = gp.`User`
+				OR CONCAT('$', tr.name) = gp.`User`
+		WHERE JSON_VALUE(gp.Priv, '$.access') >= vExecutePriv
+			AND gp.Host = ''
+		LIMIT 1;
+
+	IF NOT vHasPrivilege THEN
+		SELECT TRUE INTO vHasPrivilege
+			FROM mysql.db db
+				JOIN tRole tr ON tr.name = db.`User`
+			WHERE db.Db = vDb
+				AND db.Execute_priv = 'Y';
+	END IF;
+
+	IF NOT vHasPrivilege THEN
+		SELECT TRUE INTO vHasPrivilege
+			FROM mysql.procs_priv pp
+				JOIN tRole tr ON tr.name = pp.`User`
+			WHERE pp.Db = vDb
+				AND pp.Routine_name = vObject
+				AND pp.Routine_type = vType
+				AND pp.Proc_priv = 'Execute'
+			LIMIT 1;
+	END IF;
+
+	DROP TEMPORARY TABLE tRole;
+	RETURN vHasPrivilege;
+END ;;
+DELIMITER ;
+
+
 /*!50003 SET sql_mode              = @saved_sql_mode */ ;
 /*!50003 SET character_set_client  = @saved_cs_client */ ;
 /*!50003 SET character_set_results = @saved_cs_results */ ;

loopback/common/methods/application/execute.js

@@ -0,0 +1,27 @@
+const UserError = require('vn-loopback/util/user-error');
+
+module.exports = Self => {
+    Self.execute = async(ctx, type, query, params, options) => {
+        const userId = ctx.req.accessToken.userId;
+        const models = Self.app.models;
+        params = params ?? [];
+
+        const myOptions = {userId: ctx.req.accessToken.userId};
+        if (typeof options == 'object')
+            Object.assign(myOptions, options);
+
+        const chain = query.split(' ')[1];
+
+        const [canExecute] = await models.ProcsPriv.rawSql(
+            'SELECT account.user_hasRoutinePriv(?,?,?)',
+            [type, chain, userId],
+            myOptions);
+
+        if (!Object.values(canExecute)[0]) throw new UserError(`You don't have enough privileges`, 'ACCESS_DENIED');
+
+        const argString = params.map(() => '?').join(',');
+
+        const [response] = await models.ProcsPriv.rawSql(query + `(${argString})`, params, myOptions);
+        return response;
+    };
+};

loopback/common/methods/application/executeFunc.js

@@ -0,0 +1,41 @@
+module.exports = Self => {
+    Self.remoteMethodCtx('executeFunc', {
+        description: 'Return result of function',
+        accessType: '*',
+        accepts: [
+            {
+                arg: 'routine',
+                type: 'string',
+                description: 'The routine name',
+                required: true,
+                http: {source: 'path'}
+            },
+            {
+                arg: 'schema',
+                type: 'string',
+                description: 'The routine schema',
+                required: true,
+            },
+            {
+                arg: 'params',
+                type: ['any'],
+                description: 'The params array',
+            },
+        ],
+        returns: {
+            type: 'any',
+            root: true
+        },
+        http: {
+            path: `/:routine/execute-func`,
+            verb: 'POST'
+        }
+    });
+
+    Self.executeFunc = async(ctx, routine, schema, params, options) => {
+        const query = `SELECT ${schema}.${routine}`;
+
+        const response = await Self.execute(ctx, 'FUNCTION', query, params, options);
+        return Object.values(response)[0];
+    };
+};

loopback/common/methods/application/executeProc.js

@@ -0,0 +1,39 @@
+module.exports = Self => {
+    Self.remoteMethodCtx('executeProc', {
+        description: 'Return result of procedure',
+        accessType: '*',
+        accepts: [
+            {
+                arg: 'routine',
+                type: 'string',
+                description: 'The routine name',
+                required: true,
+                http: {source: 'path'}
+            },
+            {
+                arg: 'schema',
+                type: 'string',
+                description: 'The routine schema',
+                required: true,
+            },
+            {
+                arg: 'params',
+                type: ['any'],
+                description: 'The params array',
+            },
+        ],
+        returns: {
+            type: 'any',
+            root: true
+        },
+        http: {
+            path: `/:routine/execute-proc`,
+            verb: 'POST'
+        }
+    });
+
+    Self.executeProc = async(ctx, routine, schema, params, options) => {
+        const query = `CALL ${schema}.${routine}`;
+        return Self.execute(ctx, 'PROCEDURE', query, params, options);
+    };
+};

loopback/common/methods/application/spec/execute.spec.js

@@ -0,0 +1,161 @@
+const models = require('vn-loopback/server/server').models;
+
+describe('Application execute()/executeProc()/executeFunc()', () => {
+    const userWithoutPrivileges = 1;
+    const userWithPrivileges = 9;
+    const userWithInheritedPrivileges = 120;
+    let tx;
+
+    function getCtx(userId) {
+        return {
+            req: {
+                accessToken: {userId},
+                headers: {origin: 'http://localhost'}
+            }
+        };
+    }
+
+    beforeEach(async() => {
+        tx = await models.Application.beginTransaction({});
+        const options = {transaction: tx};
+
+        await models.Application.rawSql(`
+            CREATE OR REPLACE PROCEDURE vn.myProcedure(vMyParam INT)
+            BEGIN
+                SELECT vMyParam myParam, t.*
+                    FROM ticket t
+                    LIMIT 2;
+            END
+        `, null, options);
+
+        await models.Application.rawSql(`
+            CREATE OR REPLACE FUNCTION bs.myFunction(vMyParam INT) RETURNS int(11)
+            BEGIN
+                RETURN vMyParam;
+            END
+        `, null, options);
+
+        await models.Application.rawSql(`
+            GRANT EXECUTE ON PROCEDURE vn.myProcedure TO developer;
+            GRANT EXECUTE ON FUNCTION bs.myFunction TO developer;
+        `, null, options);
+    });
+
+    it('should throw error when execute procedure and not have privileges', async() => {
+        const ctx = getCtx(userWithoutPrivileges);
+
+        let error;
+        try {
+            const options = {transaction: tx};
+
+            await models.Application.execute(
+                ctx,
+                'PROCEDURE',
+                'CALL vn.myProcedure',
+                [1],
+                options
+            );
+
+            await tx.rollback();
+        } catch (e) {
+            await tx.rollback();
+            error = e;
+        }
+
+        expect(error.message).toEqual(`You don't have enough privileges`);
+    });
+
+    it('should execute procedure and get data', async() => {
+        const ctx = getCtx(userWithPrivileges);
+        try {
+            const options = {transaction: tx};
+
+            const response = await models.Application.execute(
+                ctx,
+                'PROCEDURE',
+                'CALL vn.myProcedure',
+                [1],
+                options
+            );
+
+            expect(response.length).toEqual(2);
+            expect(response[0].myParam).toEqual(1);
+
+            await tx.rollback();
+        } catch (e) {
+            await tx.rollback();
+            throw e;
+        }
+    });
+
+    describe('Application executeProc()', () => {
+        it('should execute procedure and get data (executeProc)', async() => {
+            const ctx = getCtx(userWithPrivileges);
+            try {
+                const options = {transaction: tx};
+
+                const response = await models.Application.executeProc(
+                    ctx,
+                    'myProcedure',
+                    'vn',
+                    [1],
+                    options
+                );
+
+                expect(response.length).toEqual(2);
+                expect(response[0].myParam).toEqual(1);
+
+                await tx.rollback();
+            } catch (e) {
+                await tx.rollback();
+                throw e;
+            }
+        });
+    });
+
+    describe('Application executeFunc()', () => {
+        it('should execute function and get data', async() => {
+            const ctx = getCtx(userWithPrivileges);
+            try {
+                const options = {transaction: tx};
+
+                const response = await models.Application.executeFunc(
+                    ctx,
+                    'myFunction',
+                    'bs',
+                    [1],
+                    options
+                );
+
+                expect(response).toEqual(1);
+
+                await tx.rollback();
+            } catch (e) {
+                await tx.rollback();
+                throw e;
+            }
+        });
+
+        it('should execute function and get data with user with inherited privileges', async() => {
+            const ctx = getCtx(userWithInheritedPrivileges);
+            try {
+                const options = {transaction: tx};
+
+                const response = await models.Application.executeFunc(
+                    ctx,
+                    'myFunction',
+                    'bs',
+                    [1],
+                    options
+                );
+
+                expect(response).toEqual(1);
+
+                await tx.rollback();
+            } catch (e) {
+                await tx.rollback();
+                throw e;
+            }
+        });
+    });
+});

loopback/common/models/application.js

@@ -2,4 +2,7 @@
 module.exports = function(Self) {
     require('../methods/application/status')(Self);
     require('../methods/application/post')(Self);
+    require('../methods/application/execute')(Self);
+    require('../methods/application/executeProc')(Self);
+    require('../methods/application/executeFunc')(Self);
 };

loopback/common/models/procs-priv.json

@@ -0,0 +1,44 @@
+{
+    "name": "ProcsPriv",
+    "base": "VnModel",
+    "options": {
+        "mysql": {
+            "table": "mysql.procs_priv"
+        }
+    },
+    "properties": {
+        "name": {
+            "id": 1,
+            "type": "string",
+            "mysql": {
+                "columnName": "Routine_name"
+            }
+        },
+        "schema": {
+            "id": 3,
+			"type": "string",
+			"mysql": {
+				"columnName": "Db"
+			}
+		},
+        "role": {
+			"type": "string",
+			"mysql": {
+				"columnName": "user"
+			}
+		},
+        "type": {
+            "id": 2,
+			"type": "string",
+			"mysql": {
+				"columnName": "Routine_type"
+			}
+		},
+        "host": {
+			"type": "string",
+			"mysql": {
+				"columnName": "Host"
+			}
+		}
+    }
+}

loopback/server/model-config.json

@@ -49,5 +49,13 @@
     },
     "Container": {
         "dataSource": "vn"
+    },
+    "ProcsPriv": {
+        "dataSource": "vn",
+        "options": {
+            "mysql": {
+                "table": "mysql.procs_priv"
+            }
+        }
     }
 }