fix(Third party Reddit clients): Spoof user agent to workaround Reddit API issues

api/revanced-patches.api

@@ -542,6 +542,7 @@ public final class app/revanced/patches/reddit/customclients/baconreader/api/Spo
 public final class app/revanced/patches/reddit/customclients/boostforreddit/api/SpoofClientPatch : app/revanced/patches/reddit/customclients/BaseSpoofClientPatch {
 	public static final field INSTANCE Lapp/revanced/patches/reddit/customclients/boostforreddit/api/SpoofClientPatch;
 	public fun patchClientId (Ljava/util/Set;Lapp/revanced/patcher/data/BytecodeContext;)V
+	public fun patchUserAgent (Ljava/util/Set;Lapp/revanced/patcher/data/BytecodeContext;)V
 }
 
 public final class app/revanced/patches/reddit/customclients/infinityforreddit/api/SpoofClientPatch : app/revanced/patches/reddit/customclients/BaseSpoofClientPatch {
@@ -564,6 +565,11 @@ public final class app/revanced/patches/reddit/customclients/joeyforreddit/ads/D
 public final class app/revanced/patches/reddit/customclients/joeyforreddit/api/SpoofClientPatch : app/revanced/patches/reddit/customclients/BaseSpoofClientPatch {
 	public static final field INSTANCE Lapp/revanced/patches/reddit/customclients/joeyforreddit/api/SpoofClientPatch;
 	public fun patchClientId (Ljava/util/Set;Lapp/revanced/patcher/data/BytecodeContext;)V
+	public fun patchUserAgent (Ljava/util/Set;Lapp/revanced/patcher/data/BytecodeContext;)V
+}
+
+public final class app/revanced/patches/reddit/customclients/joeyforreddit/api/fingerprints/AuthUtilityUserAgent : app/revanced/patcher/fingerprint/MethodFingerprint {
+	public static final field INSTANCE Lapp/revanced/patches/reddit/customclients/joeyforreddit/api/fingerprints/AuthUtilityUserAgent;
 }
 
 public final class app/revanced/patches/reddit/customclients/joeyforreddit/detection/piracy/DisablePiracyDetectionPatch : app/revanced/patcher/patch/BytecodePatch {
@@ -607,6 +613,7 @@ public final class app/revanced/patches/reddit/customclients/syncforreddit/api/S
 	public static final field INSTANCE Lapp/revanced/patches/reddit/customclients/syncforreddit/api/SpoofClientPatch;
 	public fun patchClientId (Ljava/util/Set;Lapp/revanced/patcher/data/BytecodeContext;)V
 	public fun patchMiscellaneous (Ljava/util/Set;Lapp/revanced/patcher/data/BytecodeContext;)V
+	public fun patchUserAgent (Ljava/util/Set;Lapp/revanced/patcher/data/BytecodeContext;)V
 }
 
 public final class app/revanced/patches/reddit/customclients/syncforreddit/detection/piracy/DisablePiracyDetectionPatch : app/revanced/patcher/patch/BytecodePatch {

src/main/kotlin/app/revanced/patches/reddit/customclients/boostforreddit/api/SpoofClientPatch.kt

@@ -5,14 +5,14 @@ import app.revanced.patcher.extensions.InstructionExtensions.addInstructions
 import app.revanced.patcher.fingerprint.MethodFingerprintResult
 import app.revanced.patches.reddit.customclients.BaseSpoofClientPatch
 import app.revanced.patches.reddit.customclients.boostforreddit.api.fingerprints.GetClientIdFingerprint
-import app.revanced.patches.reddit.customclients.boostforreddit.api.fingerprints.LoginActivityOnCreateFingerprint
+import app.revanced.patches.reddit.customclients.boostforreddit.api.fingerprints.JRAWUserAgent
 
 
 @Suppress("unused")
 object SpoofClientPatch : BaseSpoofClientPatch(
     redirectUri = "http://rubenmayayo.com",
     clientIdFingerprints = setOf(GetClientIdFingerprint),
-    userAgentFingerprints = setOf(LoginActivityOnCreateFingerprint),
+    userAgentFingerprints = setOf(JRAWUserAgent),
     compatiblePackages = setOf(CompatiblePackage("com.rubenmayayo.reddit"))
 ) {
     override fun Set<MethodFingerprintResult>.patchClientId(context: BytecodeContext) {
@@ -24,4 +24,13 @@ object SpoofClientPatch : BaseSpoofClientPatch(
             """
         )
     }
+
+    override fun Set<MethodFingerprintResult>.patchUserAgent(context: BytecodeContext) {
+        // Use a random user agent.
+        val randomName = (0..100000).random()
+        first().mutableMethod.addInstructions(
+            1,
+            "const-string v3, \"$randomName\"",
+        )
+    }
 }

src/main/kotlin/app/revanced/patches/reddit/customclients/boostforreddit/api/fingerprints/JRAWUserAgent.kt

@@ -0,0 +1,7 @@
+package app.revanced.patches.reddit.customclients.boostforreddit.api.fingerprints
+
+import app.revanced.patcher.fingerprint.MethodFingerprint
+
+internal object JRAWUserAgent : MethodFingerprint(
+    strings = listOf("platform", "appId", "version", "redditUsername"),
+)

src/main/kotlin/app/revanced/patches/reddit/customclients/joeyforreddit/api/SpoofClientPatch.kt

@@ -2,8 +2,10 @@ package app.revanced.patches.reddit.customclients.joeyforreddit.api
 
 import app.revanced.patcher.data.BytecodeContext
 import app.revanced.patcher.extensions.InstructionExtensions.addInstructions
+import app.revanced.patcher.extensions.InstructionExtensions.replaceInstructions
 import app.revanced.patcher.fingerprint.MethodFingerprintResult
 import app.revanced.patches.reddit.customclients.BaseSpoofClientPatch
+import app.revanced.patches.reddit.customclients.joeyforreddit.api.fingerprints.AuthUtilityUserAgent
 import app.revanced.patches.reddit.customclients.joeyforreddit.api.fingerprints.GetClientIdFingerprint
 import app.revanced.patches.reddit.customclients.joeyforreddit.detection.piracy.DisablePiracyDetectionPatch
 
@@ -12,6 +14,7 @@ import app.revanced.patches.reddit.customclients.joeyforreddit.detection.piracy.
 object SpoofClientPatch : BaseSpoofClientPatch(
     redirectUri = "https://127.0.0.1:65023/authorize_callback",
     clientIdFingerprints = setOf(GetClientIdFingerprint),
+    userAgentFingerprints = setOf(AuthUtilityUserAgent),
     compatiblePackages = setOf(
         CompatiblePackage("o.o.joey"),
         CompatiblePackage("o.o.joey.pro"),
@@ -28,4 +31,18 @@ object SpoofClientPatch : BaseSpoofClientPatch(
             """
         )
     }
+
+    override fun Set<MethodFingerprintResult>.patchUserAgent(context: BytecodeContext) {
+        // Use a random user agent.
+        val randomName = (0..100000).random()
+        val userAgent = "$randomName:app.revanced.$randomName:v1.0.0 (by /u/revanced)"
+
+        first().mutableMethod.replaceInstructions(
+            0,
+            """
+                const-string v0, "$userAgent"
+                return-object v0
+            """,
+        )
+    }
 }

src/main/kotlin/app/revanced/patches/reddit/customclients/joeyforreddit/api/fingerprints/AuthUtilityUserAgent.kt

@@ -0,0 +1,11 @@
+package app.revanced.patches.reddit.customclients.joeyforreddit.api.fingerprints
+
+import app.revanced.patcher.fingerprint.MethodFingerprint
+
+object AuthUtilityUserAgent : MethodFingerprint (
+    strings = setOf("2.1.6.5"),
+    returnType = "Ljava/lang/String;",
+    customFingerprint = { _, classDef ->
+        classDef.sourceFile == "AuthUtility.java"
+    },
+)

src/main/kotlin/app/revanced/patches/reddit/customclients/syncforreddit/api/SpoofClientPatch.kt

@@ -6,10 +6,10 @@ import app.revanced.patcher.extensions.InstructionExtensions.getInstruction
 import app.revanced.patcher.extensions.InstructionExtensions.replaceInstruction
 import app.revanced.patcher.fingerprint.MethodFingerprintResult
 import app.revanced.patches.reddit.customclients.BaseSpoofClientPatch
+import app.revanced.patches.reddit.customclients.syncforreddit.api.fingerprints.*
 import app.revanced.patches.reddit.customclients.syncforreddit.api.fingerprints.GetAuthorizationStringFingerprint
 import app.revanced.patches.reddit.customclients.syncforreddit.api.fingerprints.GetBearerTokenFingerprint
 import app.revanced.patches.reddit.customclients.syncforreddit.api.fingerprints.ImgurImageAPIFingerprint
-import app.revanced.patches.reddit.customclients.syncforreddit.api.fingerprints.LoadBrowserURLFingerprint
 import app.revanced.patches.reddit.customclients.syncforreddit.detection.piracy.DisablePiracyDetectionPatch
 import app.revanced.util.exception
 import com.android.tools.smali.dexlib2.iface.instruction.OneRegisterInstruction
@@ -23,7 +23,7 @@ object SpoofClientPatch : BaseSpoofClientPatch(
     redirectUri = "http://redditsync/auth",
     miscellaneousFingerprints = setOf(ImgurImageAPIFingerprint),
     clientIdFingerprints = setOf(GetAuthorizationStringFingerprint),
-    userAgentFingerprints = setOf(LoadBrowserURLFingerprint),
+    userAgentFingerprints = setOf(AccountSingletonUserAgent),
     compatiblePackages = setOf(
         CompatiblePackage("com.laurencedawson.reddit_sync"),
         CompatiblePackage("com.laurencedawson.reddit_sync.pro"),
@@ -75,4 +75,19 @@ object SpoofClientPatch : BaseSpoofClientPatch(
             "const-string v1, \"https://api.imgur.com/3/image\""
         )
     }
+
+    override fun Set<MethodFingerprintResult>.patchUserAgent(context: BytecodeContext) {
+        // Use a random user agent.
+        val randomName = (0..100000).random()
+        val userAgent = "$randomName:app.revanced.$randomName:v1.0.0 (by /u/revanced)"
+
+        first().mutableMethod.replaceInstruction(
+            0,
+            """
+                const-string v0, "$userAgent"
+                return-object v0
+            """,
+        )
+    }
+
 }

src/main/kotlin/app/revanced/patches/reddit/customclients/syncforreddit/api/fingerprints/AccountSingletonUserAgent.kt

@@ -0,0 +1,7 @@
+package app.revanced.patches.reddit.customclients.syncforreddit.api.fingerprints
+
+import app.revanced.patcher.fingerprint.MethodFingerprint
+
+internal object AccountSingletonUserAgent : MethodFingerprint(
+    strings = listOf("android:com.laurencedawson.reddit_sync:vv23.06.30-13:39 (by /u/ljdawson)"),
+)