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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 | 1x 1x 1x 1x 1x 1x 10x 10x 10x 1x 9x 9x 9x 9x 2x 7x 6x 1x 5x 5x 5x 5x 5x 1x 4x 1x 1x | const { DynamoDBClient } = require('@aws-sdk/client-dynamodb')
const { DynamoDBDocumentClient, GetCommand } = require('@aws-sdk/lib-dynamodb')
const { authenticateRequest, hasPermission, canAccessEntity } = require('../shared/auth-helper')
const client = new DynamoDBClient({})
const docClient = DynamoDBDocumentClient.from(client)
exports.handler = async (event) => {
try {
// Authenticate (supports JWT and API keys)
const auth = await authenticateRequest(event)
if (!auth || auth.error) {
return {
statusCode: 401,
headers: {
'Content-Type': 'application/json',
'Access-Control-Allow-Origin': '*'
},
body: JSON.stringify({ error: auth?.error || 'Authentication required' })
}
}
// Check permission
Iif (!hasPermission(auth, 'items:read')) {
return {
statusCode: 403,
headers: {
'Content-Type': 'application/json',
'Access-Control-Allow-Origin': '*'
},
body: JSON.stringify({ error: 'Permission denied: items:read required' })
}
}
const entityId = event.pathParameters?.entityId
const id = event.pathParameters?.itemId
if (!entityId || !id) {
return {
statusCode: 400,
headers: {
'Content-Type': 'application/json',
'Access-Control-Allow-Origin': '*'
},
body: JSON.stringify({ error: 'Missing entityId or id' })
}
}
// Verify entity access first
const entityResult = await docClient.send(
new GetCommand({
TableName: process.env.ENTITIES_TABLE_NAME,
Key: { id: entityId }
})
)
if (!entityResult.Item) {
return {
statusCode: 404,
headers: {
'Content-Type': 'application/json',
'Access-Control-Allow-Origin': '*'
},
body: JSON.stringify({ error: 'Entity not found' })
}
}
// Check if auth can access this entity
Iif (!canAccessEntity(auth, entityResult.Item)) {
return {
statusCode: 403,
headers: {
'Content-Type': 'application/json',
'Access-Control-Allow-Origin': '*'
},
body: JSON.stringify({ error: 'Access denied to this entity' })
}
}
const result = await docClient.send(
new GetCommand({
TableName: process.env.TABLE_NAME,
Key: { entityId, id }
})
)
Iif (!result.Item) {
return {
statusCode: 404,
headers: {
'Content-Type': 'application/json',
'Access-Control-Allow-Origin': '*'
},
body: JSON.stringify({ error: 'Item not found' })
}
}
// Only owner tenant can access items
// Exception: API keys with wildcard allowedEntityIds may access any tenant's items
const isWildcardApiKey = auth.type === 'apikey' && (auth.allowedEntityIds || []).includes('*')
if (!isWildcardApiKey && result.Item.tenantId !== auth.tenantId) {
return {
statusCode: 403,
headers: {
'Content-Type': 'application/json',
'Access-Control-Allow-Origin': '*'
},
body: JSON.stringify({ error: 'Access denied' })
}
}
return {
statusCode: 200,
headers: {
'Content-Type': 'application/json',
'Access-Control-Allow-Origin': '*'
},
body: JSON.stringify(result.Item)
}
} catch (error) {
console.error('Error:', error)
return {
statusCode: 500,
headers: {
'Content-Type': 'application/json',
'Access-Control-Allow-Origin': '*'
},
body: JSON.stringify({ error: 'Failed to fetch item' })
}
}
}
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