From 9498725fd066ea4a73bac56725a2c036b2ee855c Mon Sep 17 00:00:00 2001
From: Vincent Breitmoser <look@my.amazin.horse>
Date: Wed, 10 Jan 2018 02:05:50 +0100
Subject: [PATCH] Add prefer-encrypt setting

---
 k9mail/src/main/java/com/fsck/k9/Account.java            | 9 +++++++++
 .../java/com/fsck/k9/activity/setup/AccountSettings.java | 7 ++++++-
 k9mail/src/main/res/values/strings.xml                   | 3 +++
 k9mail/src/main/res/xml/account_settings_preferences.xml | 6 ++++++
 4 files changed, 24 insertions(+), 1 deletion(-)

diff --git a/k9mail/src/main/java/com/fsck/k9/Account.java b/k9mail/src/main/java/com/fsck/k9/Account.java
index 7b75149fb..ba56293b9 100644
--- a/k9mail/src/main/java/com/fsck/k9/Account.java
+++ b/k9mail/src/main/java/com/fsck/k9/Account.java
@@ -220,6 +220,7 @@ public class Account implements BaseAccount, StoreConfig {
     private boolean stripSignature;
     private boolean syncRemoteDeletions;
     private long pgpCryptoKey;
+    private boolean autocryptPreferEncryptMutual;
     private boolean markMessageAsReadOnView;
     private boolean alwaysShowCcBcc;
     private boolean allowRemoteSearch;
@@ -1644,6 +1645,14 @@ public class Account implements BaseAccount, StoreConfig {
         pgpCryptoKey = keyId;
     }
 
+    public boolean getAutocryptPreferEncryptMutual() {
+        return autocryptPreferEncryptMutual;
+    }
+
+    public void setAutocryptPreferEncryptMutual(boolean autocryptPreferEncryptMutual) {
+        this.autocryptPreferEncryptMutual = autocryptPreferEncryptMutual;
+    }
+
     public boolean allowRemoteSearch() {
         return allowRemoteSearch;
     }
diff --git a/k9mail/src/main/java/com/fsck/k9/activity/setup/AccountSettings.java b/k9mail/src/main/java/com/fsck/k9/activity/setup/AccountSettings.java
index c9a417e4e..2bee31a0f 100644
--- a/k9mail/src/main/java/com/fsck/k9/activity/setup/AccountSettings.java
+++ b/k9mail/src/main/java/com/fsck/k9/activity/setup/AccountSettings.java
@@ -112,6 +112,7 @@ public class AccountSettings extends K9PreferenceActivity {
     private static final String PREFERENCE_SYNC_REMOTE_DELETIONS = "account_sync_remote_deletetions";
     private static final String PREFERENCE_CRYPTO = "crypto";
     private static final String PREFERENCE_CRYPTO_KEY = "crypto_key";
+    private static final String PREFERENCE_AUTOCRYPT_PREFER_ENCRYPT = "autocrypt_prefer_encrypt";
     private static final String PREFERENCE_CLOUD_SEARCH_ENABLED = "remote_search_enabled";
     private static final String PREFERENCE_REMOTE_SEARCH_NUM_RESULTS = "account_remote_search_num_results";
     private static final String PREFERENCE_REMOTE_SEARCH_FULL_TEXT = "account_remote_search_full_text";
@@ -178,7 +179,7 @@ public class AccountSettings extends K9PreferenceActivity {
     private ListPreference mMaxPushFolders;
     private boolean hasPgpCrypto = false;
     private OpenPgpKeyPreference pgpCryptoKey;
-    private CheckBoxPreference pgpSupportSignOnly;
+    private CheckBoxPreference autocryptPreferEncryptMutual;
 
     private PreferenceScreen searchScreen;
     private CheckBoxPreference cloudSearchEnabled;
@@ -711,6 +712,9 @@ public class AccountSettings extends K9PreferenceActivity {
             });
 
             cryptoMenu.setOnPreferenceClickListener(null);
+
+            autocryptPreferEncryptMutual = (CheckBoxPreference) findPreference(PREFERENCE_AUTOCRYPT_PREFER_ENCRYPT);
+            autocryptPreferEncryptMutual.setChecked(account.getAutocryptPreferEncryptMutual());
         } else {
             cryptoMenu.setSummary(R.string.account_settings_no_openpgp_provider_configured);
             cryptoMenu.setOnPreferenceClickListener(new OnPreferenceClickListener() {
@@ -791,6 +795,7 @@ public class AccountSettings extends K9PreferenceActivity {
         } else {
             account.setCryptoKey(Account.NO_OPENPGP_KEY);
         }
+        account.setAutocryptPreferEncryptMutual(autocryptPreferEncryptMutual.isChecked());
 
         // In webdav account we use the exact folder name also for inbox,
         // since it varies because of internationalization
diff --git a/k9mail/src/main/res/values/strings.xml b/k9mail/src/main/res/values/strings.xml
index 2e644a244..52604ba23 100644
--- a/k9mail/src/main/res/values/strings.xml
+++ b/k9mail/src/main/res/values/strings.xml
@@ -1282,4 +1282,7 @@ Please submit bug reports, contribute new features and ask questions at
     <string name="openpgp_enabled_error_back">Back</string>
     <string name="openpgp_enabled_error_disable">Disable Encryption</string>
     <string name="openpgp_encryption">OpenPGP Encryption</string>
+    <string name="account_settings_crypto_prefer_encrypt">Encryption preference</string>
+    <string name="account_settings_crypto_prefer_encrypt_on">By default when replying to encrypted, or if all recipients also checked this option</string>
+    <string name="account_settings_crypto_prefer_encrypt_off">By default, when replying to encrypted messages</string>
 </resources>
diff --git a/k9mail/src/main/res/xml/account_settings_preferences.xml b/k9mail/src/main/res/xml/account_settings_preferences.xml
index c4235b6ea..018fcf3e5 100644
--- a/k9mail/src/main/res/xml/account_settings_preferences.xml
+++ b/k9mail/src/main/res/xml/account_settings_preferences.xml
@@ -479,6 +479,12 @@
             android:key="crypto_key"
             android:title="@string/account_settings_crypto_key" />
 
+        <CheckBoxPreference
+            android:key="autocrypt_prefer_encrypt"
+            android:title="@string/account_settings_crypto_prefer_encrypt"
+            android:summaryOn="@string/account_settings_crypto_prefer_encrypt_on"
+            android:summaryOff="@string/account_settings_crypto_prefer_encrypt_off"
+            />
     </PreferenceScreen>
 
 </PreferenceScreen>