Allow specifying a local IPSW file (#298)

Author: airsquared

.idea/codeStyles/Project.xml

@@ -275,7 +275,7 @@ public void helpLabelHandler(Event evt) {
         ((Button) alert.getDialogPane().lookupButton(customOK)).setDefaultButton(true);
         String url = switch (labelID) {
             case "ipswURLHelp":
-                alert.setContentText("Get the IPSW download URL for the iOS version from theiphonewiki.com/wiki/Beta_Firmware and paste it here.");
+                alert.setContentText("Get the IPSW download URL for the iOS version from theiphonewiki.com/wiki/Beta_Firmware and paste it here.\n\nIf you already have the IPSW downloaded, you can also supply a 'file:' URL.");
                 alert.setTitle("Help: IPSW URL");
                 alert.setHeaderText("Help");
                 yield "https://www.theiphonewiki.com/wiki/Beta_Firmware";

.idea/saveactions_settings.xml

@@ -24,7 +24,10 @@
 import java.io.FileNotFoundException;
 import java.io.IOException;
 import java.net.MalformedURLException;
+import java.net.URI;
+import java.net.URISyntaxException;
 import java.net.URL;
+import java.nio.file.Path;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
@@ -41,7 +44,7 @@
 public class TSS extends Task<String> {
 
     // note: Matcher is NOT thread safe
-    private static final Matcher ipswURLMatcher = Pattern.compile("https?://.*apple.*\\.ipsw").matcher("");
+    private static final Matcher ipswURLMatcher = Pattern.compile("(https?://|file:/).*\\.ipsw").matcher("");
     private static final Matcher versionMatcher = Pattern.compile("[0-9]+\\.[0-9]+\\.?[0-9]*(?<!\\.)").matcher("");
 
     private final String deviceIdentifier;
@@ -124,9 +127,14 @@ private void checkInputs() throws TSSException {
                 if (!ipswURLMatcher.reset(manualIpswURL).matches()) {
                     throw new MalformedURLException("Doesn't match ipsw URL regex");
                 }
-                new URL(manualIpswURL);
+                new URL(manualIpswURL); // check URL
             } catch (MalformedURLException e) {
-                throw new TSSException("The IPSW URL is not valid.\n\nMake sure it starts with \"http://\" or \"https://\", has \"apple\" in it, and ends with \".ipsw\"", false, e);
+                throw new TSSException("The IPSW URL is not valid.\n\nMake sure it's a valid URL that ends with \".ipsw\"", false, e);
+            }
+            if (manualIpswURL.startsWith("file:")) try {
+                Path.of(new URI(manualIpswURL)).toRealPath(); // check URI
+            } catch (IllegalArgumentException | URISyntaxException | IOException e) {
+                throw new TSSException("The IPSW URL is not valid.\n\nMake sure it's a valid file URL to a local .ipsw file.", false, e);
             }
         } else if (manualVersion != null && !versionMatcher.reset(manualVersion).matches()) {
             throw new TSSException("Invalid version. Make sure it follows the convention X.X.X or X.X, like \"13.1\" or \"13.5.5\"", false);

src/main/java/airsquared/blobsaver/app/Controller.java

@@ -38,6 +38,7 @@
 import org.json.JSONTokener;
 
 import java.io.*;
+import java.net.URI;
 import java.net.URL;
 import java.net.URLConnection;
 import java.nio.ByteBuffer;
@@ -48,6 +49,7 @@
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.StandardCopyOption;
+import java.nio.file.StandardOpenOption;
 import java.util.List;
 import java.util.Objects;
 import java.util.concurrent.ExecutorService;
@@ -363,7 +365,10 @@ static final record IOSVersion(String versionString, String ipswURL, Boolean sig
 
     static Path extractBuildManifest(String ipswUrl) throws IOException {
         Path buildManifest = Files.createTempFile("BuildManifest", ".plist");
-        try (ZipFile ipsw = new ZipFile(new HttpChannel(new URL(ipswUrl)), "ipsw", "UTF8", true, true);
+        SeekableByteChannel channel = ipswUrl.startsWith("file:")
+                ? Files.newByteChannel(Path.of(URI.create(ipswUrl)), StandardOpenOption.READ)
+                : new HttpChannel(new URL(ipswUrl));
+        try (channel; ZipFile ipsw = new ZipFile(channel, "ipsw", "UTF8", true, true);
              InputStream is = ipsw.getInputStream(ipsw.getEntry("BuildManifest.plist"))) {
             Files.copy(is, buildManifest, StandardCopyOption.REPLACE_EXISTING);
         }