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| 1 | +import { prisma, Role, User } from "../prisma"; |
| 2 | +import { checkSession } from "./session"; |
| 3 | +import { Permission } from "./types/permissions"; |
| 4 | + |
| 5 | +type UserWithRoles = User & { |
| 6 | + roles: Role[]; |
| 7 | +}; |
| 8 | + |
| 9 | +export class InsufficientPermissionsError extends Error { |
| 10 | + constructor(message: string = "Insufficient permissions") { |
| 11 | + super(message); |
| 12 | + this.name = "InsufficientPermissionsError"; |
| 13 | + } |
| 14 | +} |
| 15 | + |
| 16 | +/** |
| 17 | + * Checks if a user has the required permissions through their roles |
| 18 | + * @param user - The user with their roles loaded |
| 19 | + * @param requiredPermissions - Single permission or array of permissions to check |
| 20 | + * @param requireAll - If true, user must have ALL permissions. If false, only ONE permission is required |
| 21 | + * @returns boolean |
| 22 | + */ |
| 23 | +export function hasPermission( |
| 24 | + user: UserWithRoles, |
| 25 | + requiredPermissions: Permission | Permission[], |
| 26 | + requireAll: boolean = true |
| 27 | +): boolean { |
| 28 | + // Convert single permission to array for consistent handling |
| 29 | + const permissions = Array.isArray(requiredPermissions) |
| 30 | + ? requiredPermissions |
| 31 | + : [requiredPermissions]; |
| 32 | + |
| 33 | + // Combine all permissions from user's roles and default role |
| 34 | + const userPermissions = new Set<Permission>(); |
| 35 | + |
| 36 | + // Add permissions from default role if it exists |
| 37 | + const defaultRole = user.roles.find((role) => role.isDefault); |
| 38 | + if (defaultRole) { |
| 39 | + defaultRole.permissions.forEach((perm) => userPermissions.add(perm as Permission)); |
| 40 | + } |
| 41 | + |
| 42 | + // Add permissions from additional roles |
| 43 | + user.roles.forEach((role) => { |
| 44 | + role.permissions.forEach((perm) => userPermissions.add(perm as Permission)); |
| 45 | + }); |
| 46 | + |
| 47 | + if (requireAll) { |
| 48 | + // Check if user has ALL required permissions |
| 49 | + return permissions.every((permission) => userPermissions.has(permission)); |
| 50 | + } else { |
| 51 | + // Check if user has AT LEAST ONE of the required permissions |
| 52 | + return permissions.some((permission) => userPermissions.has(permission)); |
| 53 | + } |
| 54 | +} |
| 55 | + |
| 56 | +/** |
| 57 | + * Authorization middleware that checks for required permissions |
| 58 | + * @param requiredPermissions - Single permission or array of permissions to check |
| 59 | + * @param requireAll - If true, user must have ALL permissions. If false, only ONE permission is required |
| 60 | + */ |
| 61 | +export function requirePermission( |
| 62 | + requiredPermissions: Permission | Permission[], |
| 63 | + requireAll: boolean = true |
| 64 | +) { |
| 65 | + return async (req: any, res: any, next: any) => { |
| 66 | + try { |
| 67 | + const user = await checkSession(req); |
| 68 | + const config = await prisma.config.findFirst(); |
| 69 | + |
| 70 | + if (!config?.roles_active) { |
| 71 | + next(); |
| 72 | + } |
| 73 | + |
| 74 | + const userWithRoles = user |
| 75 | + ? await prisma.user.findUnique({ |
| 76 | + where: { id: user.id }, |
| 77 | + include: { |
| 78 | + roles: true, |
| 79 | + }, |
| 80 | + }) |
| 81 | + : null; |
| 82 | + |
| 83 | + if (!userWithRoles) { |
| 84 | + throw new Error("User not authenticated"); |
| 85 | + } |
| 86 | + |
| 87 | + if (!hasPermission(userWithRoles, requiredPermissions, requireAll)) { |
| 88 | + throw new InsufficientPermissionsError(); |
| 89 | + } |
| 90 | + |
| 91 | + next(); |
| 92 | + } catch (error) { |
| 93 | + next(error); |
| 94 | + } |
| 95 | + }; |
| 96 | +} |
| 97 | + |
| 98 | +// Usage examples: |
| 99 | +/* |
| 100 | +// Check single permission |
| 101 | +if (hasPermission(user, 'issue::create')) { |
| 102 | + // Allow create ticket |
| 103 | +} |
| 104 | +
|
| 105 | +// Check multiple permissions (all required) |
| 106 | +if (hasPermission(user, ['issue:update', 'issue:assign'])) { |
| 107 | + // Allow ticket update and assignment |
| 108 | +} |
| 109 | +
|
| 110 | +// Check multiple permissions (at least one required) |
| 111 | +if (hasPermission(user, ['user:manage', 'role:manage'], false)) { |
| 112 | + // Allow access if user has either permission |
| 113 | +} |
| 114 | +
|
| 115 | +// Use as middleware |
| 116 | +router.post('/tickets', |
| 117 | + requirePermission('issue::create'), |
| 118 | + ticketController.create |
| 119 | +); |
| 120 | +
|
| 121 | +// Use as middleware with multiple permissions |
| 122 | +router.put('/tickets/:id/assign', |
| 123 | + requirePermission(['issue:update', 'issue:assign']), |
| 124 | + ticketController.assign |
| 125 | +); |
| 126 | +*/ |
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