Add /privacy logging command

Add ability to completely turn logs off,
Needed since `/logging` and `/history` didn't stop history logging
in the DB, only in files.
Command might break something on usage,
hence it was primarily introduced for privacy geeks.
Privacy command discussion #1836

src/chatlog.c

@@ -222,9 +222,13 @@ chat_log_msg_in(ProfMessage* message)
 }
 
 static void
-_chat_log_chat(const char* const login, const char* const other, const char* const msg,
+_chat_log_chat(const char* const login, const char* const other, const char* msg,
                chat_log_direction_t direction, GDateTime* timestamp, const char* const resourcepart)
 {
+    auto_gchar gchar* pref_dblog = prefs_get_string(PREF_DBLOG);
+    if (g_strcmp0(pref_dblog, "redact") == 0) {
+        msg = "[REDACTED]";
+    }
     char* other_name;
     GString* other_str = NULL;
 

src/command/cmd_ac.c

@@ -122,6 +122,7 @@ static char* _clear_autocomplete(ProfWin* window, const char* const input, gbool
 static char* _invite_autocomplete(ProfWin* window, const char* const input, gboolean previous);
 static char* _status_autocomplete(ProfWin* window, const char* const input, gboolean previous);
 static char* _logging_autocomplete(ProfWin* window, const char* const input, gboolean previous);
+static char* _privacy_autocomplete(ProfWin* window, const char* const input, gboolean previous);
 static char* _color_autocomplete(ProfWin* window, const char* const input, gboolean previous);
 static char* _avatar_autocomplete(ProfWin* window, const char* const input, gboolean previous);
 static char* _correction_autocomplete(ProfWin* window, const char* const input, gboolean previous);
@@ -269,6 +270,8 @@ static Autocomplete status_ac;
 static Autocomplete status_state_ac;
 static Autocomplete logging_ac;
 static Autocomplete logging_group_ac;
+static Autocomplete privacy_ac;
+static Autocomplete privacy_log_ac;
 static Autocomplete color_ac;
 static Autocomplete correction_ac;
 static Autocomplete avatar_ac;
@@ -1070,6 +1073,14 @@ cmd_ac_init(void)
     autocomplete_add(logging_ac, "chat");
     autocomplete_add(logging_ac, "group");
 
+    privacy_ac = autocomplete_new();
+    autocomplete_add(privacy_ac, "logging");
+
+    privacy_log_ac = autocomplete_new();
+    autocomplete_add(privacy_log_ac, "on");
+    autocomplete_add(privacy_log_ac, "off");
+    autocomplete_add(privacy_log_ac, "redact");
+
     logging_group_ac = autocomplete_new();
     autocomplete_add(logging_group_ac, "on");
     autocomplete_add(logging_group_ac, "off");
@@ -1330,6 +1341,7 @@ cmd_ac_init(void)
     g_hash_table_insert(ac_funcs, "/lastactivity", _lastactivity_autocomplete);
     g_hash_table_insert(ac_funcs, "/log", _log_autocomplete);
     g_hash_table_insert(ac_funcs, "/logging", _logging_autocomplete);
+    g_hash_table_insert(ac_funcs, "/privacy", _privacy_autocomplete);
     g_hash_table_insert(ac_funcs, "/mood", _mood_autocomplete);
     g_hash_table_insert(ac_funcs, "/notify", _notify_autocomplete);
     g_hash_table_insert(ac_funcs, "/occupants", _occupants_autocomplete);
@@ -1682,6 +1694,8 @@ cmd_ac_reset(ProfWin* window)
     autocomplete_reset(status_state_ac);
     autocomplete_reset(logging_ac);
     autocomplete_reset(logging_group_ac);
+    autocomplete_reset(privacy_ac);
+    autocomplete_reset(privacy_log_ac);
     autocomplete_reset(color_ac);
     autocomplete_reset(correction_ac);
     autocomplete_reset(avatar_ac);
@@ -1867,6 +1881,8 @@ cmd_ac_uninit(void)
     autocomplete_free(status_state_ac);
     autocomplete_free(logging_ac);
     autocomplete_free(logging_group_ac);
+    autocomplete_free(privacy_ac);
+    autocomplete_free(privacy_log_ac);
     autocomplete_free(color_ac);
     autocomplete_free(correction_ac);
     autocomplete_free(avatar_ac);
@@ -4213,6 +4229,24 @@ _status_autocomplete(ProfWin* window, const char* const input, gboolean previous
     return NULL;
 }
 
+static char*
+_privacy_autocomplete(ProfWin* window, const char* const input, gboolean previous)
+{
+    char* found = NULL;
+
+    found = autocomplete_param_with_ac(input, "/privacy", privacy_ac, TRUE, previous);
+    if (found) {
+        return found;
+    }
+
+    found = autocomplete_param_with_ac(input, "/privacy logging", privacy_log_ac, TRUE, previous);
+    if (found) {
+        return found;
+    }
+
+    return found;
+}
+
 static char*
 _logging_autocomplete(ProfWin* window, const char* const input, gboolean previous)
 {

src/command/cmd_defs.c

@@ -2720,6 +2720,21 @@ static const struct cmd_t command_defs[] = {
               "/strophe verbosity 3",
               "/strophe sm no-resend")
     },
+
+    { CMD_PREAMBLE("/privacy",
+                   parse_args, 2, 3, NULL)
+      CMD_MAINFUNC(cmd_privacy)
+      CMD_TAGS(
+              CMD_TAG_CHAT)
+      CMD_SYN(
+              "/privacy logging on|redact|off")
+      CMD_DESC(
+              "Configure privacy settings.")
+      CMD_ARGS(
+              { "logging on|redact|off", "Switch chat logging. This will also disable logging in the internally used SQL database. Your messages will not be saved anywhere locally. This might have unintended consequences, such as not being able to decrypt OMEMO encrypted messages received later via MAM, and should be used with caution." })
+      CMD_EXAMPLES(
+              "/privacy logging off")
+    },
     // NEXT-COMMAND (search helper)
 };
 

src/command/cmd_funcs.c

@@ -6949,6 +6949,44 @@ cmd_autoconnect(ProfWin* window, const char* const command, gchar** args)
     return TRUE;
 }
 
+gboolean
+cmd_privacy(ProfWin* window, const char* const command, gchar** args)
+{
+    if (args[0] == NULL) {
+        cons_bad_cmd_usage(command);
+        return FALSE;
+    }
+
+    if (g_strcmp0(args[0], "logging") == 0) {
+        gchar* arg = args[1];
+        if (arg == NULL) {
+            cons_bad_cmd_usage(command);
+            return FALSE;
+        }
+
+        if (g_strcmp0(arg, "on") == 0) {
+            cons_show("Logging enabled.");
+            prefs_set_string(PREF_DBLOG, arg);
+            prefs_set_boolean(PREF_CHLOG, TRUE);
+            prefs_set_boolean(PREF_HISTORY, TRUE);
+        } else if (g_strcmp0(arg, "off") == 0) {
+            cons_show("Logging disabled.");
+            prefs_set_string(PREF_DBLOG, arg);
+            prefs_set_boolean(PREF_CHLOG, FALSE);
+            prefs_set_boolean(PREF_HISTORY, FALSE);
+        } else if (g_strcmp0(arg, "redact") == 0) {
+            cons_show("Messages are going to be redacted.");
+            prefs_set_string(PREF_DBLOG, arg);
+        } else {
+            cons_bad_cmd_usage(command);
+            return FALSE;
+        }
+        return TRUE;
+    }
+
+    return TRUE;
+}
+
 gboolean
 cmd_logging(ProfWin* window, const char* const command, gchar** args)
 {
@@ -6967,10 +7005,7 @@ cmd_logging(ProfWin* window, const char* const command, gchar** args)
 
         return TRUE;
     } else if (g_strcmp0(args[0], "group") == 0 && args[1] != NULL) {
-        if (g_strcmp0(args[1], "on") == 0 || g_strcmp0(args[1], "off") == 0) {
-            _cmd_set_boolean_preference(args[1], "Groupchat logging", PREF_GRLOG);
-            return TRUE;
-        }
+        return _cmd_set_boolean_preference(args[1], "Groupchat logging", PREF_GRLOG);
     }
 
     cons_bad_cmd_usage(command);

src/command/cmd_funcs.h

@@ -112,6 +112,7 @@ gboolean cmd_msg(ProfWin* window, const char* const command, gchar** args);
 gboolean cmd_nick(ProfWin* window, const char* const command, gchar** args);
 gboolean cmd_notify(ProfWin* window, const char* const command, gchar** args);
 gboolean cmd_pgp(ProfWin* window, const char* const command, gchar** args);
+gboolean cmd_privacy(ProfWin* window, const char* const command, gchar** args);
 #ifdef HAVE_LIBGPGME
 gboolean cmd_ox(ProfWin* window, const char* const command, gchar** args);
 gboolean cmd_ox_log(ProfWin* window, const char* const command, gchar** args);

src/config/preferences.c

@@ -1827,6 +1827,7 @@ _get_group(preference_t pref)
     case PREF_TRAY_READ:
     case PREF_ADV_NOTIFY_DISCO_OR_VERSION:
         return PREF_GROUP_NOTIFICATIONS;
+    case PREF_DBLOG:
     case PREF_CHLOG:
     case PREF_GRLOG:
     case PREF_LOG_ROTATE:
@@ -1975,6 +1976,8 @@ _get_key(preference_t pref)
         return "room.mention.wholeword";
     case PREF_CHLOG:
         return "chlog";
+    case PREF_DBLOG:
+        return "dblog";
     case PREF_GRLOG:
         return "grlog";
     case PREF_AUTOAWAY_CHECK:
@@ -2321,6 +2324,8 @@ _get_default_string(preference_t pref)
         return "on";
     case PREF_STROPHE_VERBOSITY:
         return "0";
+    case PREF_DBLOG:
+        return "on";
     default:
         return NULL;
     }

src/config/preferences.h

@@ -127,6 +127,7 @@ typedef enum {
     PREF_NOTIFY_MENTION_CASE_SENSITIVE,
     PREF_NOTIFY_MENTION_WHOLE_WORD,
     PREF_CHLOG,
+    PREF_DBLOG,
     PREF_GRLOG,
     PREF_AUTOAWAY_CHECK,
     PREF_AUTOAWAY_MODE,

src/database.c

@@ -47,6 +47,7 @@
 #include "common.h"
 #include "config/files.h"
 #include "database.h"
+#include "config/preferences.h"
 #include "xmpp/xmpp.h"
 #include "xmpp/message.h"
 
@@ -373,6 +374,17 @@ _get_message_enc_type(const char* const encstr)
 static void
 _add_to_db(ProfMessage* message, char* type, const Jid* const from_jid, const Jid* const to_jid)
 {
+    auto_gchar gchar* pref_dblog = prefs_get_string(PREF_DBLOG);
+
+    if (g_strcmp0(pref_dblog, "off") == 0) {
+        return;
+    } else if (g_strcmp0(pref_dblog, "redact") == 0) {
+        if (message->plain) {
+            free(message->plain);
+        }
+        message->plain = strdup("[REDACTED]");
+    }
+
     if (!g_chatlog_database) {
         log_debug("log_database_add() called but db is not initialized");
         return;