lightningd: complete plugin state machine.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

lightningd/plugin.c

@@ -1145,6 +1145,7 @@ void plugins_init(struct plugins *plugins, const char *dev_plugin_debug)
 					    plugin_manifest_cb, p);
 		jsonrpc_request_end(req);
 		plugin_request_send(p, req);
+		p->plugin_state = AWAITING_GETMANIFEST_RESPONSE;
 
 		plugins->pending_manifests++;
 		/* Don't timeout if they're running a debugger. */
@@ -1232,6 +1233,7 @@ plugin_config(struct plugin *plugin)
 	plugin_populate_init_request(plugin, req);
 	jsonrpc_request_end(req);
 	plugin_request_send(plugin, req);
+	plugin->plugin_state = AWAITING_INIT_RESPONSE;
 }
 
 void plugins_config(struct plugins *plugins)

lightningd/plugin.h

@@ -24,6 +24,8 @@
 enum plugin_state {
 	/* We have to ask getmanifest */
 	UNCONFIGURED,
+	/* We sent getmanifest, need response. */
+	AWAITING_GETMANIFEST_RESPONSE,
 	/* Got `getmanifest` reply, now we need to send `init`. */
 	NEEDS_INIT,
 	/* We have to get `init` response */

lightningd/plugin_control.c

@@ -97,6 +97,7 @@ static void plugin_dynamic_config(struct dynamic_plugin *dp)
 	                            plugin_dynamic_config_callback, dp);
 	plugin_populate_init_request(dp->plugin, req);
 	jsonrpc_request_end(req);
+	dp->plugin->plugin_state = AWAITING_INIT_RESPONSE;
 	plugin_request_send(dp->plugin, req);
 }
 
@@ -112,6 +113,7 @@ static void plugin_dynamic_manifest_callback(const char *buffer,
 		return was_pending(plugin_dynamic_error(dp, "Not a dynamic plugin"));
 
 	/* We got the manifest, now send the init message */
+	dp->plugin->plugin_state = NEEDS_INIT;
 	plugin_dynamic_config(dp);
 }
 
@@ -167,6 +169,7 @@ static struct command_result *plugin_start(struct dynamic_plugin *dp)
 	                            plugin_dynamic_manifest_callback, dp);
 	jsonrpc_request_end(req);
 	plugin_request_send(p, req);
+	p->plugin_state = AWAITING_GETMANIFEST_RESPONSE;
 	return command_still_pending(dp->cmd);
 }