Remove Apache Commons dependencies (#840)

Co-authored-by: Harsh Shandilya <me@msfjarvis.dev>

9 files changed, 70 insertions, 29 deletions

diff --git a/app/build.gradle b/app/build.gradle
index 7be17e71..dbac1a5c 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -94,8 +94,6 @@ dependencies {
     implementation deps.kotlin.coroutines.android
     implementation deps.kotlin.coroutines.core
 
-    implementation deps.third_party.commons_io
-    implementation deps.third_party.commons_codec
     implementation deps.third_party.fastscroll
     implementation(deps.third_party.jgit) {
         exclude group: 'org.apache.httpcomponents', module: 'httpclient'
diff --git a/app/src/main/java/com/zeapo/pwdstore/PasswordStore.kt b/app/src/main/java/com/zeapo/pwdstore/PasswordStore.kt
index 8c5aa3ae..525ad1e2 100644
--- a/app/src/main/java/com/zeapo/pwdstore/PasswordStore.kt
+++ b/app/src/main/java/com/zeapo/pwdstore/PasswordStore.kt
@@ -55,6 +55,7 @@ import com.zeapo.pwdstore.git.GitOperationActivity
 import com.zeapo.pwdstore.git.GitServerConfigActivity
 import com.zeapo.pwdstore.git.config.ConnectionMode
 import com.zeapo.pwdstore.ui.dialogs.FolderCreationDialogFragment
+import com.zeapo.pwdstore.utils.FileUtils
 import com.zeapo.pwdstore.utils.PasswordItem
 import com.zeapo.pwdstore.utils.PasswordRepository
 import com.zeapo.pwdstore.utils.PasswordRepository.Companion.closeRepository
@@ -65,8 +66,6 @@ import com.zeapo.pwdstore.utils.PasswordRepository.Companion.getRepositoryDirect
 import com.zeapo.pwdstore.utils.PasswordRepository.Companion.initialize
 import com.zeapo.pwdstore.utils.PasswordRepository.Companion.isInitialized
 import com.zeapo.pwdstore.utils.PasswordRepository.PasswordSortOrder.Companion.getSortOrder
-import org.apache.commons.io.FileUtils
-import org.apache.commons.io.FilenameUtils
 import org.eclipse.jgit.api.Git
 import org.eclipse.jgit.api.errors.GitAPIException
 import org.eclipse.jgit.revwalk.RevCommit
@@ -577,7 +576,7 @@ class PasswordStore : AppCompatActivity() {
             .setMessage(resources.getString(R.string.delete_dialog_text, item.longName))
             .setPositiveButton(resources.getString(R.string.dialog_yes)) { _, _ ->
                 val filesToDelete = if (item.file.isDirectory) {
-                    FileUtils.listFiles(item.file, null, true)
+                    FileUtils.listFiles(item.file, true)
                 } else {
                     listOf(item.file)
                 }
@@ -668,7 +667,7 @@ class PasswordStore : AppCompatActivity() {
                         if (dir != null &&
                             dir.exists() &&
                             dir.isDirectory &&
-                            !FileUtils.listFiles(dir, null, true).isEmpty() &&
+                            !FileUtils.listFiles(dir, true).isEmpty() &&
                             getPasswords(dir, getRepositoryDirectory(this), sortOrder).isNotEmpty()) {
                             closeRepository()
                             checkLocalRepository()
@@ -703,7 +702,7 @@ class PasswordStore : AppCompatActivity() {
                             continue
                         }
                         val destinationFile = File(target.absolutePath + "/" + source.name)
-                        val basename = FilenameUtils.getBaseName(source.absolutePath)
+                        val basename = FileUtils.getBaseName(source.absolutePath)
                         val sourceLongName = getLongName(requireNotNull(source.parent), repositoryPath, basename)
                         val destinationLongName = getLongName(target.absolutePath, repositoryPath, basename)
                         if (destinationFile.exists()) {
@@ -739,7 +738,7 @@ class PasswordStore : AppCompatActivity() {
             // Recursively list all files (not directories) below `source`, then
             // obtain the corresponding target file by resolving the relative path
             // starting at the destination folder.
-            val sourceFiles = FileUtils.listFiles(source, null, true)
+            val sourceFiles = FileUtils.listFiles(source, true)
             sourceFiles.associateWith { destinationFile.resolve(it.relativeTo(source)) }
         } else {
             mapOf(source to destinationFile)
diff --git a/app/src/main/java/com/zeapo/pwdstore/UserPreference.kt b/app/src/main/java/com/zeapo/pwdstore/UserPreference.kt
index 63c9ce7c..96f23724 100644
--- a/app/src/main/java/com/zeapo/pwdstore/UserPreference.kt
+++ b/app/src/main/java/com/zeapo/pwdstore/UserPreference.kt
@@ -36,6 +36,7 @@ import androidx.preference.PreferenceManager
 import androidx.preference.SwitchPreferenceCompat
 import com.github.ajalt.timberkt.Timber.tag
 import com.github.ajalt.timberkt.d
+import com.github.ajalt.timberkt.w
 import com.google.android.material.dialog.MaterialAlertDialogBuilder
 import com.google.android.material.snackbar.Snackbar
 import com.zeapo.pwdstore.autofill.AutofillPreferenceActivity
@@ -52,7 +53,6 @@ import com.zeapo.pwdstore.utils.PasswordRepository
 import com.zeapo.pwdstore.utils.autofillManager
 import com.zeapo.pwdstore.utils.getEncryptedPrefs
 import me.msfjarvis.openpgpktx.util.OpenPgpUtils
-import org.apache.commons.io.FileUtils
 import java.io.File
 import java.io.IOException
 import java.time.LocalDateTime
@@ -227,7 +227,7 @@ class UserPreference : AppCompatActivity() {
                     .setCancelable(false)
                     .setPositiveButton(R.string.dialog_delete) { dialogInterface, _ ->
                         try {
-                            FileUtils.cleanDirectory(PasswordRepository.getRepositoryDirectory(callingActivity.applicationContext))
+                            PasswordRepository.getRepositoryDirectory(callingActivity.applicationContext).deleteRecursively()
                             PasswordRepository.closeRepository()
                         } catch (ignored: Exception) {
                             // TODO Handle the different cases of exceptions
@@ -357,8 +357,8 @@ class UserPreference : AppCompatActivity() {
             prefIsCustomDict?.onPreferenceChangeListener = ChangeListener { _, newValue ->
                 if (!(newValue as Boolean)) {
                     val customDictFile = File(context.filesDir, XkpwdDictionary.XKPWD_CUSTOM_DICT_FILE)
-                    if (customDictFile.exists()) {
-                        FileUtils.deleteQuietly(customDictFile)
+                    if (customDictFile.exists() && !customDictFile.delete()) {
+                        w { "Failed to delete custom XkPassword dictionary: $customDictFile" }
                     }
                     prefCustomDictPicker?.setSummary(R.string.xkpwgen_pref_custom_dict_picker_summary)
                 }
@@ -706,9 +706,11 @@ class UserPreference : AppCompatActivity() {
                     val customDictPref = prefsFragment.findPreference<Preference>("pref_key_custom_dict")
                     setCustomDictSummary(customDictPref, uri)
                     // copy user selected file to internal storage
-                    val inputStream = this.contentResolver.openInputStream(uri)
-                    val customDictFile = File(this.filesDir.toString(), XkpwdDictionary.XKPWD_CUSTOM_DICT_FILE)
-                    FileUtils.copyInputStreamToFile(inputStream, customDictFile)
+                    val inputStream = contentResolver.openInputStream(uri)
+                    val customDictFile = File(filesDir.toString(), XkpwdDictionary.XKPWD_CUSTOM_DICT_FILE).outputStream()
+                    inputStream?.copyTo(customDictFile, 1024)
+                    inputStream?.close()
+                    customDictFile.close()
 
                     setResult(Activity.RESULT_OK)
                 }
diff --git a/app/src/main/java/com/zeapo/pwdstore/autofill/AutofillService.kt b/app/src/main/java/com/zeapo/pwdstore/autofill/AutofillService.kt
index 0e8809e7..26c86fc8 100644
--- a/app/src/main/java/com/zeapo/pwdstore/autofill/AutofillService.kt
+++ b/app/src/main/java/com/zeapo/pwdstore/autofill/AutofillService.kt
@@ -39,7 +39,6 @@ import kotlinx.coroutines.launch
 import kotlinx.coroutines.withContext
 import me.msfjarvis.openpgpktx.util.OpenPgpApi
 import me.msfjarvis.openpgpktx.util.OpenPgpServiceConnection
-import org.apache.commons.io.FileUtils
 import org.openintents.openpgp.IOpenPgpService2
 import org.openintents.openpgp.OpenPgpError
 import java.io.ByteArrayOutputStream
@@ -497,7 +496,7 @@ class AutofillService : AccessibilityService(), CoroutineScope by CoroutineScope
         var inputStream: InputStream? = null
         withContext(Dispatchers.IO) {
             try {
-                inputStream = FileUtils.openInputStream(items[lastWhichItem])
+                inputStream = items[lastWhichItem].inputStream()
             } catch (e: IOException) {
                 e.printStackTrace()
                 cancel("", e)
diff --git a/app/src/main/java/com/zeapo/pwdstore/crypto/PgpActivity.kt b/app/src/main/java/com/zeapo/pwdstore/crypto/PgpActivity.kt
index 35550d8d..c62b6293 100644
--- a/app/src/main/java/com/zeapo/pwdstore/crypto/PgpActivity.kt
+++ b/app/src/main/java/com/zeapo/pwdstore/crypto/PgpActivity.kt
@@ -43,6 +43,7 @@ import com.zeapo.pwdstore.autofill.oreo.AutofillPreferences
 import com.zeapo.pwdstore.autofill.oreo.DirectoryStructure
 import com.zeapo.pwdstore.ui.dialogs.PasswordGeneratorDialogFragment
 import com.zeapo.pwdstore.ui.dialogs.XkPasswordGeneratorDialogFragment
+import com.zeapo.pwdstore.utils.FileUtils
 import kotlinx.android.synthetic.main.decrypt_layout.crypto_password_category_decrypt
 import kotlinx.android.synthetic.main.decrypt_layout.crypto_password_file
 import kotlinx.android.synthetic.main.decrypt_layout.crypto_password_last_changed
@@ -69,8 +70,6 @@ import me.msfjarvis.openpgpktx.util.OpenPgpApi.Companion.RESULT_CODE_USER_INTERA
 import me.msfjarvis.openpgpktx.util.OpenPgpApi.Companion.RESULT_ERROR
 import me.msfjarvis.openpgpktx.util.OpenPgpApi.Companion.RESULT_INTENT
 import me.msfjarvis.openpgpktx.util.OpenPgpServiceConnection
-import org.apache.commons.io.FileUtils
-import org.apache.commons.io.FilenameUtils
 import org.openintents.openpgp.IOpenPgpService2
 import org.openintents.openpgp.OpenPgpError
 import java.io.ByteArrayInputStream
@@ -352,7 +351,7 @@ class PgpActivity : AppCompatActivity(), OpenPgpServiceConnection.OnBound {
         val data = receivedIntent ?: Intent()
         data.action = ACTION_DECRYPT_VERIFY
 
-        val iStream = FileUtils.openInputStream(File(fullPath))
+        val iStream = File(fullPath).inputStream()
         val oStream = ByteArrayOutputStream()
 
         lifecycleScope.launch(IO) {
@@ -478,7 +477,7 @@ class PgpActivity : AppCompatActivity(), OpenPgpServiceConnection.OnBound {
                         try {
                             // TODO This might fail, we should check that the write is successful
                             val file = File(path)
-                            val outputStream = FileUtils.openOutputStream(file)
+                            val outputStream = file.outputStream()
                             outputStream.write(oStream.toByteArray())
                             outputStream.close()
 
@@ -772,7 +771,7 @@ class PgpActivity : AppCompatActivity(), OpenPgpServiceConnection.OnBound {
          * Gets the name of the password (excluding .gpg)
          */
         fun getName(fullPath: String): String {
-            return FilenameUtils.getBaseName(fullPath)
+            return FileUtils.getBaseName(fullPath)
         }
 
         /**
diff --git a/app/src/main/java/com/zeapo/pwdstore/sshkeygen/ShowSshKeyFragment.kt b/app/src/main/java/com/zeapo/pwdstore/sshkeygen/ShowSshKeyFragment.kt
index 0a70d74a..950968ff 100644
--- a/app/src/main/java/com/zeapo/pwdstore/sshkeygen/ShowSshKeyFragment.kt
+++ b/app/src/main/java/com/zeapo/pwdstore/sshkeygen/ShowSshKeyFragment.kt
@@ -16,7 +16,7 @@ import androidx.core.content.getSystemService
 import androidx.fragment.app.DialogFragment
 import com.google.android.material.dialog.MaterialAlertDialogBuilder
 import com.zeapo.pwdstore.R
-import org.apache.commons.io.FileUtils
+import com.zeapo.pwdstore.utils.FileUtils
 import java.io.File
 import java.nio.charset.StandardCharsets
 
@@ -61,7 +61,7 @@ class ShowSshKeyFragment : DialogFragment() {
     private fun readKeyFromFile() {
         val file = File(requireActivity().filesDir.toString() + "/.ssh_key.pub")
         try {
-            publicKey.text = FileUtils.readFileToString(file, StandardCharsets.UTF_8)
+            publicKey.text = file.readText()
         } catch (e: Exception) {
             e.printStackTrace()
         }
diff --git a/app/src/main/java/com/zeapo/pwdstore/utils/FileUtils.kt b/app/src/main/java/com/zeapo/pwdstore/utils/FileUtils.kt
new file mode 100644
index 00000000..867ec0aa
--- /dev/null
+++ b/app/src/main/java/com/zeapo/pwdstore/utils/FileUtils.kt
@@ -0,0 +1,47 @@
+/*
+ * Copyright © 2014-2020 The Android Password Store Authors. All Rights Reserved.
+ * SPDX-License-Identifier: GPL-3.0-only
+ */
+
+package com.zeapo.pwdstore.utils
+
+import java.io.File
+
+object FileUtils {
+    @JvmStatic
+    fun listFiles(dir: File, recursive: Boolean): Collection<File> {
+        val res = ArrayList<File>()
+        val files = dir.listFiles()
+
+        if (files != null && files.isNotEmpty()) {
+
+            files.forEach { file ->
+                // Check if the file is a directory and recursive add
+                if (file.isDirectory && recursive) {
+                    res.addAll(listFiles(file, recursive))
+                } else if (!file.isDirectory) {
+                    res.add(file)
+                }
+            }
+        }
+        return res
+    }
+
+    @JvmStatic
+    fun getBaseName(filename: String): String {
+        // Take the file name along with its extension
+        val indexName = filename.lastIndexOf('/')
+        val nameWithExtension = filename.substring(indexName + 1)
+
+        // Find the final '.' character in the previously calculated nameWithExtension
+        val indexExt = nameWithExtension.lastIndexOf('.')
+
+        // If no '.' is found in the name, we assume this is a directory and return the previously
+        // derived nameWithExtensions as-is, otherwise we slice out a substring from the first character
+        // to the last occurrence of '.' which we found earlier.
+        return if (indexExt == -1)
+            nameWithExtension
+        else
+            nameWithExtension.substring(0, indexExt)
+    }
+}
diff --git a/app/src/main/java/com/zeapo/pwdstore/utils/PasswordRepository.kt b/app/src/main/java/com/zeapo/pwdstore/utils/PasswordRepository.kt
index ccbf179e..794630be 100644
--- a/app/src/main/java/com/zeapo/pwdstore/utils/PasswordRepository.kt
+++ b/app/src/main/java/com/zeapo/pwdstore/utils/PasswordRepository.kt
@@ -8,7 +8,6 @@ import android.content.Context
 import android.content.SharedPreferences
 import androidx.core.content.edit
 import androidx.preference.PreferenceManager
-import org.apache.commons.io.filefilter.FileFilterUtils
 import org.eclipse.jgit.api.Git
 import org.eclipse.jgit.lib.Repository
 import org.eclipse.jgit.storage.file.FileRepositoryBuilder
@@ -195,9 +194,9 @@ open class PasswordRepository protected constructor() {
         fun getFilesList(path: File?): ArrayList<File> {
             if (path == null || !path.exists()) return ArrayList()
 
-            val directories = (path.listFiles(FileFilterUtils.directoryFileFilter() as FileFilter)
+            val directories = (path.listFiles(FileFilter { pathname -> pathname.isDirectory })
                 ?: emptyArray()).toList()
-            val files = (path.listFiles(FileFilterUtils.suffixFileFilter(".gpg") as FileFilter)
+            val files = (path.listFiles(FileFilter { pathname -> pathname.extension == "gpg" })
                 ?: emptyArray()).toList()
 
             val items = ArrayList<File>()
diff --git a/dependencies.gradle b/dependencies.gradle
index 381cbb08..e54ccd55 100644
--- a/dependencies.gradle
+++ b/dependencies.gradle
@@ -47,8 +47,6 @@ ext.deps = [
 
     third_party: [
         bouncycastle: 'org.bouncycastle:bcprov-jdk15on:1.65',
-        commons_io: 'commons-io:commons-io:2.5',
-        commons_codec: 'commons-codec:commons-codec:1.13',
         fastscroll: 'me.zhanghai.android.fastscroll:library:1.1.4',
         jsch: 'com.jcraft:jsch:0.1.55',
         jgit: 'org.eclipse.jgit:org.eclipse.jgit:3.7.1.201504261725-r',