Read a license from a LCPDF container

Cartfile

@@ -1,4 +1,4 @@
-github "readium/r2-shared-swift" == 1.2.13
+github "readium/r2-shared-swift" == 1.3.0
 github "stephencelis/SQLite.swift" == 0.11.5
 github "krzyzanowskim/CryptoSwift" == 0.15.0
 github "weichsel/ZIPFoundation" == 0.9.8

Cartfile.resolved

@@ -1,4 +1,4 @@
 github "krzyzanowskim/CryptoSwift" "0.15.0"
-github "readium/r2-shared-swift" "1.2.13"
+github "readium/r2-shared-swift" "1.3.0"
 github "stephencelis/SQLite.swift" "0.11.5"
 github "weichsel/ZIPFoundation" "0.9.8"

r2-lcp-swift.xcodeproj/project.pbxproj

@@ -18,6 +18,7 @@
 		CA4A3892220994E300599297 /* EPUBLicenseContainer.swift in Sources */ = {isa = PBXBuildFile; fileRef = CA4A3891220994E300599297 /* EPUBLicenseContainer.swift */; };
 		CA50B88022B2A777003AFF24 /* R2LCPLocalizedString.swift in Sources */ = {isa = PBXBuildFile; fileRef = CA50B87F22B2A777003AFF24 /* R2LCPLocalizedString.swift */; };
 		CA50B88422B2A822003AFF24 /* Localizable.strings in Resources */ = {isa = PBXBuildFile; fileRef = CA50B88622B2A822003AFF24 /* Localizable.strings */; };
+		CA9428FD22B9442300305CDB /* LCPDFLicenseContainer.swift in Sources */ = {isa = PBXBuildFile; fileRef = CA9428FC22B9442300305CDB /* LCPDFLicenseContainer.swift */; };
 		CAB131F6220D81E60097DFB5 /* LicensesRepository.swift in Sources */ = {isa = PBXBuildFile; fileRef = CAB131F5220D81E60097DFB5 /* LicensesRepository.swift */; };
 		CAB1320B220D9B200097DFB5 /* LCPService.swift in Sources */ = {isa = PBXBuildFile; fileRef = CAB1320A220D9B200097DFB5 /* LCPService.swift */; };
 		CAB13211220DB2B10097DFB5 /* LCPAuthenticating.swift in Sources */ = {isa = PBXBuildFile; fileRef = CAB13210220DB2B10097DFB5 /* LCPAuthenticating.swift */; };
@@ -61,6 +62,7 @@
 		CA4A3891220994E300599297 /* EPUBLicenseContainer.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = EPUBLicenseContainer.swift; sourceTree = "<group>"; };
 		CA50B87F22B2A777003AFF24 /* R2LCPLocalizedString.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = R2LCPLocalizedString.swift; sourceTree = "<group>"; };
 		CA50B88522B2A822003AFF24 /* en */ = {isa = PBXFileReference; lastKnownFileType = text.plist.strings; name = en; path = en.lproj/Localizable.strings; sourceTree = "<group>"; };
+		CA9428FC22B9442300305CDB /* LCPDFLicenseContainer.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = LCPDFLicenseContainer.swift; sourceTree = "<group>"; };
 		CAB131F5220D81E60097DFB5 /* LicensesRepository.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = LicensesRepository.swift; sourceTree = "<group>"; };
 		CAB1320A220D9B200097DFB5 /* LCPService.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = LCPService.swift; sourceTree = "<group>"; };
 		CAB13210220DB2B10097DFB5 /* LCPAuthenticating.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = LCPAuthenticating.swift; sourceTree = "<group>"; };
@@ -155,6 +157,7 @@
 				CA4A388D220988C800599297 /* LCPLLicenseContainer.swift */,
 				CA4A388F22098A9400599297 /* ZIPLicenseContainer.swift */,
 				CA4A3891220994E300599297 /* EPUBLicenseContainer.swift */,
+				CA9428FC22B9442300305CDB /* LCPDFLicenseContainer.swift */,
 			);
 			path = Container;
 			sourceTree = "<group>";
@@ -372,6 +375,7 @@
 				CABEB3F62215C86C00090B6C /* LCPError+wrap.swift in Sources */,
 				CA4A388722086F7500599297 /* PassphrasesService.swift in Sources */,
 				CAE7FB82220C64D100D03587 /* CRLService.swift in Sources */,
+				CA9428FD22B9442300305CDB /* LCPDFLicenseContainer.swift in Sources */,
 				F36F9E261F826C17001D0DB4 /* Licenses.swift in Sources */,
 				F35AFA011F6AD54400D3F670 /* License.swift in Sources */,
 				F38FB03C1F6683F300F9D602 /* UserKey.swift in Sources */,

readium-lcp-swift/License/Container/LCPDFLicenseContainer.swift

@@ -0,0 +1,21 @@
+//
+//  LCPDFLicenseContainer.swift
+//  r2-lcp-swift
+//
+//  Created by Mickaël Menu on 18.06.19.
+//
+//  Copyright 2019 Readium Foundation. All rights reserved.
+//  Use of this source code is governed by a BSD-style license which is detailed
+//  in the LICENSE file present in the project repository where this source code is maintained.
+//
+
+import Foundation
+
+/// Access a License Document stored in an LCPDF archive.
+final class LCPDFLicenseContainer: ZIPLicenseContainer {
+
+    init(lcpdf: URL) {
+        super.init(zip: lcpdf, pathInZIP: "license.lcpl")
+    }
+
+}

readium-lcp-swift/License/Container/LicenseContainer.swift

@@ -10,6 +10,7 @@
 //
 
 import Foundation
+import R2Shared
 
 /// Encapsulates the read/write access to the packaged License Document (eg. in an EPUB container, or a standalone LCPL file)
 protocol LicenseContainer {
@@ -18,3 +19,14 @@ protocol LicenseContainer {
     func write(_ license: LicenseDocument) throws
 
 }
+
+func makeLicenseContainer(for publication: URL, mimetype: String? = nil) throws -> LicenseContainer {
+    switch Publication.Format(file: publication, mimetype: mimetype) {
+    case .pdf:
+        return LCPDFLicenseContainer(lcpdf: publication)
+    case .epub:
+        return EPUBLicenseContainer(epub: publication)
+    default:
+        throw LCPError.licenseContainer
+    }
+}

readium-lcp-swift/License/License.swift

@@ -254,7 +254,7 @@ extension License {
 
                 do {
                     // Saves the License Document into the downloaded publication
-                    let container = EPUBLicenseContainer(epub: downloadedFile)
+                    let container = try makeLicenseContainer(for: downloadedFile, mimetype: task?.response?.mimeType)
                     try container.write(license)
                     completion((downloadedFile, task), nil)
 

readium-lcp-swift/Services/LicensesService.swift

@@ -94,9 +94,13 @@ extension LicensesService: LCPService {
     }
 
     func retrieveLicense(from publication: URL, authentication: LCPAuthenticating?, completion: @escaping (LCPLicense?, LCPError?) -> Void) {
-        let container = EPUBLicenseContainer(epub: publication)
-        retrieveLicense(from: container, authentication: authentication)
-            .resolve(LCPError.wrap(completion))
+        do {
+            let container = try makeLicenseContainer(for: publication)
+            retrieveLicense(from: container, authentication: authentication)
+                .resolve(LCPError.wrap(completion))
+        } catch {
+            completion(nil, LCPError.wrap(error))
+        }
     }
 
 }