From 94ed738515aa6e1a1d346b85b54805e68e36f94c Mon Sep 17 00:00:00 2001
From: Aunali321 <48486084+Aunali321@users.noreply.github.com>
Date: Fri, 11 Aug 2023 00:11:31 +0530
Subject: [PATCH] feat: Add `Override certificate pinning` patch (#2781)

Co-authored-by: oSumAtrIX <johan.melkonyan1@web.de>
---
 .../patch/OverrideCertificatePinningPatch.kt  | 79 +++++++++++++++++++
 1 file changed, 79 insertions(+)
 create mode 100644 src/main/kotlin/app/revanced/patches/all/misc/network/patch/OverrideCertificatePinningPatch.kt

diff --git a/src/main/kotlin/app/revanced/patches/all/misc/network/patch/OverrideCertificatePinningPatch.kt b/src/main/kotlin/app/revanced/patches/all/misc/network/patch/OverrideCertificatePinningPatch.kt
new file mode 100644
index 000000000..0a3da723f
--- /dev/null
+++ b/src/main/kotlin/app/revanced/patches/all/misc/network/patch/OverrideCertificatePinningPatch.kt
@@ -0,0 +1,79 @@
+package app.revanced.patches.all.misc.network.patch
+
+import app.revanced.patcher.annotation.Description
+import app.revanced.patcher.annotation.Name
+import app.revanced.patcher.annotation.Version
+import app.revanced.patcher.data.ResourceContext
+import app.revanced.patcher.patch.*
+import app.revanced.patcher.patch.annotations.DependsOn
+import app.revanced.patcher.patch.annotations.Patch
+import app.revanced.patches.all.misc.debugging.patch.EnableAndroidDebuggingPatch
+import org.w3c.dom.Element
+import java.io.File
+
+@Patch(false)
+@Name("Override certificate pinning")
+@Description("Overrides certificate pinning, allowing to inspect traffic via a proxy.")
+@DependsOn([EnableAndroidDebuggingPatch::class])
+class OverrideCertificatePinningPatch : ResourcePatch {
+
+    override fun execute(context: ResourceContext): PatchResult {
+        val resXmlDirectory = context["res/xml"]
+
+        // Add android:networkSecurityConfig="@xml/network_security_config" and the "networkSecurityConfig" attribute if it does not exist.
+        context.xmlEditor["AndroidManifest.xml"].use { editor ->
+            val document = editor.file
+            val applicationNode = document.getElementsByTagName("application").item(0) as Element
+
+            if (!applicationNode.hasAttribute("networkSecurityConfig")) {
+                document.createAttribute("android:networkSecurityConfig")
+                    .apply { value = "@xml/network_security_config" }.let(applicationNode.attributes::setNamedItem)
+            }
+        }
+
+        // In case the file does not exist create the "network_security_config.xml" file.
+        File(resXmlDirectory, "network_security_config.xml").apply {
+            if (!exists()) {
+                createNewFile()
+                writeText(
+                    """
+                    <?xml version="1.0" encoding="utf-8"?>
+                    <network-security-config>
+                        <base-config cleartextTrafficPermitted="true">
+                            <trust-anchors>
+                                <certificates src="system" />
+                                <certificates
+                                    src="user"
+                                    overridePins="true" />
+                            </trust-anchors>
+                        </base-config>
+                        <debug-overrides>
+                            <trust-anchors>
+                                <certificates src="system" />
+                                <certificates
+                                    src="user"
+                                    overridePins="true" />
+                            </trust-anchors>
+                        </debug-overrides>
+                    </network-security-config>
+                    """
+                )
+            } else {
+                // If the file already exists.
+                readText().let { text ->
+                    if (!text.contains("<certificates src=\"user\" />")) {
+                        writeText(
+                            text.replace(
+                                "<trust-anchors>",
+                                "<trust-anchors>\n<certificates src=\"user\" overridePins=\"true\" />\n<certificates src=\"system\" />"
+                            )
+                        )
+                    }
+                }
+
+            }
+        }
+
+        return PatchResultSuccess()
+    }
+}