Rename sync.server.encryption_secret to sync.encryption_secret. (#3249)

* Rename `sync.server.encryption_secret` to `sync.encryption_secret`.

* move pwgen

doc/man/task-sync.5.in

@@ -48,6 +48,16 @@ Taskwarrior provides several options for synchronizing your tasks:
  + To a cloud storage provider. Currently only GCP is supported.
  - To a local, on-disk file.
 
+For most of these, you will need an encryption secret used to encrypt and
+decrypt your tasks. This can be any secret string, and must match for all
+replicas sharing tasks.
+
+    $ task config sync.encryption_secret <encryption_secret>
+
+Tools such as
+.BR pwgen (1)
+can generate suitable secret values.
+
 .SS Sync Server
 
 To synchronize your tasks to a sync server, you will need the following
@@ -57,18 +67,11 @@ information from the server administrator:
   - The server's URL ("origin", such as "https://tw.example.com")
 .br
   - A client ID ("client_id") identifying your tasks
-.br
-  - An encryption secret ("encryption_secret") used to encrypt and decrypt your tasks. This can be any secret string, and must match for all replicas using the same client ID.
-
-Tools such as
-.BR pwgen (1)
-can generate suitable secret values.
 
 Configure Taskwarrior with these details:
 
     $ task config sync.server.origin            <origin>
     $ task config sync.server.client_id         <client_id>
-    $ task config sync.server.encryption_secret <encryption_secret>
 
 .SS Google Cloud Platform
 

src/Context.cpp

@@ -279,8 +279,8 @@ std::string configurationDefaults =
   "# WARNING: Please read the documentation (man task-sync) before setting up\n"
   "#          Taskwarrior for Taskserver synchronization.\n"
   "\n"
+  "#sync.encryption_secret                        # Encryption secret for sync to a server\n"
   "#sync.server.client_id                         # Client ID for sync to a server\n"
-  "#sync.server.encryption_secret                 # Encryption secret for sync to a server\n"
   "#sync.server.origin                            # Origin of the sync server\n"
   "#sync.local.server_dir                         # Directory for local sync\n"
   "#sync.gcp.bucket                               # Bucket for sync to GCP\n"

src/commands/CmdShow.cpp

@@ -195,7 +195,7 @@ int CmdShow::execute (std::string& output)
     " sync.local.server_dir"
     " sync.gcp.bucket"
     " sync.server.client_id"
-    " sync.server.encryption_secret"
+    " sync.encryption_secret"
     " sync.server.origin"
     " tag.indicator"
     " undo.style"

src/commands/CmdSync.cpp

@@ -65,13 +65,13 @@ int CmdSync::execute (std::string& output)
   std::string origin = Context::getContext ().config.get ("sync.server.origin");
   std::string server_dir = Context::getContext ().config.get ("sync.local.server_dir");
   std::string gcp_bucket = Context::getContext ().config.get ("sync.gcp.bucket");
+  std::string encryption_secret = Context::getContext ().config.get ("sync.encryption_secret");
   if (server_dir != "") {
     server = tc::Server::new_local (server_dir);
     server_ident = server_dir;
   } else if (gcp_bucket != "") {
-    std::string encryption_secret = Context::getContext ().config.get ("sync.gcp.encryption_secret");
     if (encryption_secret == "") {
-      throw std::string ("sync.gcp.encryption_secret is required");
+      throw std::string ("sync.encryption_secret is required");
     }
     server = tc::Server::new_gcp (gcp_bucket, encryption_secret);
     std::ostringstream os;
@@ -79,9 +79,8 @@ int CmdSync::execute (std::string& output)
     server_ident = os.str();
   } else if (origin != "") {
     std::string client_id = Context::getContext ().config.get ("sync.server.client_id");
-    std::string encryption_secret = Context::getContext ().config.get ("sync.server.encryption_secret");
     if (client_id == "" || encryption_secret == "") {
-      throw std::string ("sync.server.client_id and encryption_secret are required");
+      throw std::string ("sync.server.client_id and sync.encryption_secret are required");
     }
     server = tc::Server::new_sync (origin, client_id, encryption_secret);
     std::ostringstream os;