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Swift: add basic Alamofire taint source model.
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4 files changed

+75
-16
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‎swift/ql/lib/codeql/swift/dataflow/ExternalFlow.qll‎

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@@ -86,6 +86,7 @@ private module Frameworks {
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private import codeql.swift.frameworks.StandardLibrary.Url
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private import codeql.swift.frameworks.StandardLibrary.UrlSession
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private import codeql.swift.frameworks.StandardLibrary.WebView
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private import codeql.swift.frameworks.Alamofire.Alamofire
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}
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/**

‎swift/ql/lib/codeql/swift/frameworks/Alamofire/Alamofire.qll‎

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@@ -0,0 +1,39 @@
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/**
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* Models for the Alamofire networking library.
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*/
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import swift
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private import codeql.swift.dataflow.DataFlow
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private import codeql.swift.dataflow.ExternalFlow
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private import codeql.swift.dataflow.FlowSources
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/**
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* An Alamofire response handler type.
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*/
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private class AlamofireResponseType extends NominalTypeDecl {
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AlamofireResponseType() {
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this.getFullName() = ["DataResponse", "DownloadResponse"] or
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this.getABaseTypeDecl() instanceof AlamofireResponseType
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}
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/**
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* A response handler field that contains remote data.
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*/
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FieldDecl getADataField() {
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result = this.getAMember() and
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result.getName() = ["data", "value", "result"]
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}
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}
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/**
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* A remote flow source that is an access to a remote data from an Alamofire response handler.
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*/
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private class AlamofireResponseSource extends RemoteFlowSource {
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AlamofireResponseSource() {
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exists(AlamofireResponseType responseType |
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this.asExpr().(MemberRefExpr).getMember() = responseType.getADataField()
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)
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}
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override string getSourceType() { result = "Data from an Alamofire response" }
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}

‎swift/ql/test/library-tests/dataflow/flowsources/FlowSources.expected‎

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@@ -1,16 +1,35 @@
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| alamofire.swift:91:27:91:27 | .result | Data from an Alamofire response |
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| alamofire.swift:99:27:99:27 | .result | Data from an Alamofire response |
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| alamofire.swift:342:23:342:32 | .data | Data from an Alamofire response |
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| alamofire.swift:349:22:349:31 | .value | Data from an Alamofire response |
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| alamofire.swift:356:23:356:32 | .value | Data from an Alamofire response |
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| alamofire.swift:363:22:363:31 | .value | Data from an Alamofire response |
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| alamofire.swift:370:23:370:32 | .value | Data from an Alamofire response |
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| alamofire.swift:377:28:377:37 | .value | Data from an Alamofire response |
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| alamofire.swift:387:28:387:28 | call to init(contentsOfFile:) | external |
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| alamofire.swift:387:28:387:55 | call to init(contentsOfFile:) | external |
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| alamofire.swift:394:22:394:31 | .value | Data from an Alamofire response |
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| alamofire.swift:401:22:401:31 | .value | Data from an Alamofire response |
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| alamofire.swift:402:28:402:28 | call to init(contentsOf:) | external |
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| alamofire.swift:402:28:402:50 | call to init(contentsOf:) | external |
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| alamofire.swift:409:23:409:32 | .value | Data from an Alamofire response |
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| alamofire.swift:416:22:416:31 | .value | Data from an Alamofire response |
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| alamofire.swift:423:23:423:32 | .value | Data from an Alamofire response |
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| alamofire.swift:429:28:429:37 | .value | Data from an Alamofire response |
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| alamofire.swift:446:20:446:20 | call to init(contentsOfFile:) | external |
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| alamofire.swift:446:20:446:49 | call to init(contentsOfFile:) | external |
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| alamofire.swift:453:23:453:32 | .data | Data from an Alamofire response |
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| alamofire.swift:459:23:459:32 | .data | Data from an Alamofire response |
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| customurlschemes.swift:30:44:30:54 | url | external |
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| customurlschemes.swift:34:52:34:68 | url | external |
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| customurlschemes.swift:38:52:38:62 | url | external |
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| customurlschemes.swift:43:9:43:28 | ...[...] | Remote URL in UIApplicationDelegate.application.launchOptions |
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| customurlschemes.swift:48:9:48:28 | ...[...] | Remote URL in UIApplicationDelegate.application.launchOptions |
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| data.swift:18:20:18:20 | call to init(contentsOf:options:) | external |
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| data.swift:18:20:18:54 | call to init(contentsOf:options:) | external |
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| file://:0:0:0:0 | .data | Data from an Alamofire response |
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| file://:0:0:0:0 | .result | Data from an Alamofire response |
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| file://:0:0:0:0 | .result | Data from an Alamofire response |
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| nsdata.swift:18:17:18:17 | call to init(contentsOf:) | external |
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| nsdata.swift:18:17:18:40 | call to init(contentsOf:) | external |
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| nsdata.swift:19:17:19:17 | call to init(contentsOf:options:) | external |

‎swift/ql/test/library-tests/dataflow/flowsources/alamofire.swift‎

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@@ -88,15 +88,15 @@ struct DataResponse<Success, Failure: Error> {
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let result: Result<Success, Failure>
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var value: Success? { result.success }
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var value: Success? { result.success } // SOURCE
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}
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struct DownloadResponse<Success, Failure: Error> {
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let fileURL: URL?
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let result: Result<Success, Failure>
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var value: Success? { result.success }
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var value: Success? { result.success } // SOURCE
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}
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typealias AFDataResponse<Success> = DataResponse<Success, AFError>
@@ -339,42 +339,42 @@ func testAlamofire() {
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AF.request("http://example.com/").response {
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response in
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if let data = response.data { // SOURCE [NOT DETECTED]
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if let data = response.data { // SOURCE
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// ...
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}
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}
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AF.request("http://example.com/").response(responseSerializer: MySerializer()) {
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response in
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if let obj = response.value { // SOURCE [NOT DETECTED]
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if let obj = response.value { // SOURCE
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// ...
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}
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}
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AF.request("http://example.com/").responseData {
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response in
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if let data = response.value { // SOURCE [NOT DETECTED]
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if let data = response.value { // SOURCE
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// ...
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}
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}
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AF.request("http://example.com/").responseString {
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response in
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if let str = response.value { // SOURCE [NOT DETECTED]
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if let str = response.value { // SOURCE
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// ...
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}
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}
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AF.request("http://example.com/").responseJSON {
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response in
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if let json = response.value { // SOURCE [NOT DETECTED]
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if let json = response.value { // SOURCE
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// ...
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}
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}
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AF.request("http://example.com/").responseDecodable(of: MyDecodable.self) {
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response in
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if let decodable = response.value { // SOURCE [NOT DETECTED]
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if let decodable = response.value { // SOURCE
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// ...
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}
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}
@@ -391,42 +391,42 @@ func testAlamofire() {
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AF.download("http://example.com/").response(responseSerializer: MySerializer()) {
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response in
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if let obj = response.value { // SOURCE [NOT DETECTED]
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if let obj = response.value { // SOURCE
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// ...
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}
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}
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399399
AF.download("http://example.com/").responseURL {
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response in
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if let url = response.value {
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if let url = response.value { // just the URL [FALSE POSITIVE]
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let str = try? String(contentsOf: url) // SOURCE
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// ...
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}
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}
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AF.download("http://example.com/").responseData {
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response in
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if let data = response.value { // SOURCE [NOT DETECTED]
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if let data = response.value { // SOURCE
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// ...
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}
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}
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AF.download("http://example.com/").responseString {
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response in
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if let str = response.value { // SOURCE [NOT DETECTED]
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if let str = response.value { // SOURCE
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// ...
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}
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}
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AF.download("http://example.com/").responseJSON {
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response in
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if let json = response.value { // SOURCE [NOT DETECTED]
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if let json = response.value { // SOURCE
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}
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}
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AF.download("http://example.com/").responseDecodable(of: MyDecodable.self) {
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response in
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if let decodable = response.value { // SOURCE [NOT DETECTED]
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if let decodable = response.value { // SOURCE
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// ...
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}
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}
@@ -450,13 +450,13 @@ func testAlamofire() {
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AF.request("http://example.com/").response {
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response in
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if let data = response.data { // SOURCE [NOT DETECTED]
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if let data = response.data { // SOURCE
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// ...
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}
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}
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.response {
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response in
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if let data = response.data { // SOURCE [NOT DETECTED]
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if let data = response.data { // SOURCE
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// ...
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}
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}

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