Add get_config message type to ipc

include/ipc.h

@@ -14,6 +14,7 @@ enum ipc_command_type {
 	IPC_GET_BAR_CONFIG = 6,
 	IPC_GET_VERSION = 7,
 	IPC_GET_BINDING_MODES = 8,
+	IPC_GET_CONFIG = 9,
 
 	// sway-specific command types
 	IPC_GET_INPUTS = 100,

include/sway/config.h

@@ -341,6 +341,7 @@ struct sway_config {
 	int gaps_outer;
 
 	list_t *config_chain;
+	const char *current_config_path;
 	const char *current_config;
 
 	enum sway_container_border border;
@@ -496,7 +497,4 @@ void config_update_font_height(bool recalculate);
 /* Global config singleton. */
 extern struct sway_config *config;
 
-/* Config file currently being read */
-extern const char *current_config_path;
-
 #endif

sway/commands/output/background.c

@@ -80,7 +80,7 @@ struct cmd_results *output_cmd_background(int argc, char **argv) {
 		if (config->reading && *src != '/') {
 			// src file is inside configuration dir
 
-			char *conf = strdup(config->current_config);
+			char *conf = strdup(config->current_config_path);
 			if (!conf) {
 				wlr_log(WLR_ERROR, "Failed to duplicate string");
 				free(src);

sway/commands/reload.c

@@ -7,7 +7,7 @@ struct cmd_results *cmd_reload(int argc, char **argv) {
 	if ((error = checkarg(argc, "reload", EXPECTED_EQUAL_TO, 0))) {
 		return error;
 	}
-	if (!load_main_config(config->current_config, true)) {
+	if (!load_main_config(config->current_config_path, true)) {
 		return cmd_results_new(CMD_FAILURE, "reload", "Error(s) reloading config.");
 	}
 

sway/config.c

@@ -117,6 +117,7 @@ void free_config(struct sway_config *config) {
 	free(config->floating_scroll_left_cmd);
 	free(config->floating_scroll_right_cmd);
 	free(config->font);
+	free((char *)config->current_config_path);
 	free((char *)config->current_config);
 	free(config);
 }
@@ -205,6 +206,7 @@ static void config_defaults(struct sway_config *config) {
 	if (!(config->active_bar_modifiers = create_list())) goto cleanup;
 
 	if (!(config->config_chain = create_list())) goto cleanup;
+	config->current_config_path = NULL;
 	config->current_config = NULL;
 
 	// borders
@@ -304,8 +306,6 @@ static char *get_config_path(void) {
 	return NULL; // Not reached
 }
 
-const char *current_config_path;
-
 static bool load_config(const char *path, struct sway_config *config) {
 	if (path == NULL) {
 		wlr_log(WLR_ERROR, "Unable to find a config file!");
@@ -313,7 +313,6 @@ static bool load_config(const char *path, struct sway_config *config) {
 	}
 
 	wlr_log(WLR_INFO, "Loading config from %s", path);
-	current_config_path = path;
 
 	struct stat sb;
 	if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) {
@@ -333,7 +332,6 @@ static bool load_config(const char *path, struct sway_config *config) {
 		wlr_log(WLR_ERROR, "Error(s) loading config!");
 	}
 
-	current_config_path = NULL;
 	return true;
 }
 
@@ -358,7 +356,7 @@ bool load_main_config(const char *file, bool is_active) {
 		config->active = true;
 	}
 
-	config->current_config = path;
+	config->current_config_path = path;
 	list_add(config->config_chain, path);
 
 	config->reading = true;
@@ -428,7 +426,7 @@ bool load_main_config(const char *file, bool is_active) {
 static bool load_include_config(const char *path, const char *parent_dir,
 		struct sway_config *config) {
 	// save parent config
-	const char *parent_config = config->current_config;
+	const char *parent_config = config->current_config_path;
 
 	char *full_path;
 	int len = strlen(path);
@@ -466,25 +464,25 @@ static bool load_include_config(const char *path, const char *parent_dir,
 		}
 	}
 
-	config->current_config = real_path;
+	config->current_config_path = real_path;
 	list_add(config->config_chain, real_path);
 	int index = config->config_chain->length - 1;
 
 	if (!load_config(real_path, config)) {
 		free(real_path);
-		config->current_config = parent_config;
+		config->current_config_path = parent_config;
 		list_del(config->config_chain, index);
 		return false;
 	}
 
-	// restore current_config
-	config->current_config = parent_config;
+	// restore current_config_path
+	config->current_config_path = parent_config;
 	return true;
 }
 
 bool load_include_configs(const char *path, struct sway_config *config) {
 	char *wd = getcwd(NULL, 0);
-	char *parent_path = strdup(config->current_config);
+	char *parent_path = strdup(config->current_config_path);
 	const char *parent_dir = dirname(parent_path);
 
 	if (chdir(parent_dir) < 0) {
@@ -561,6 +559,23 @@ static char *expand_line(const char *block, const char *line, bool add_brace) {
 }
 
 bool read_config(FILE *file, struct sway_config *config) {
+	bool reading_main_config = false;
+	char *current_config, *config_pos;
+	long config_size = 0;
+	if (config->current_config == NULL) {
+		reading_main_config = true;
+
+		fseek(file, 0, SEEK_END);
+		config_size = ftell(file);
+		rewind(file);
+
+		config_pos = current_config = malloc(config_size + 1);
+		if (current_config == NULL) {
+			wlr_log(WLR_ERROR, "Unable to allocate buffer for config contents");
+			return false;
+		}
+	}
+
 	bool success = true;
 	int line_number = 0;
 	char *line;
@@ -573,6 +588,14 @@ bool read_config(FILE *file, struct sway_config *config) {
 		}
 		line_number++;
 		wlr_log(WLR_DEBUG, "Read line %d: %s", line_number, line);
+
+		if (reading_main_config) {
+			size_t l = strlen(line);
+			memcpy(config_pos, line, l); // don't copy terminating character
+			config_pos += l;
+			*config_pos++ = '\n';
+		}
+
 		line = strip_whitespace(line);
 		if (line[0] == '#') {
 			free(line);
@@ -592,6 +615,8 @@ bool read_config(FILE *file, struct sway_config *config) {
 		if (!expanded) {
 			list_foreach(stack, free);
 			list_free(stack);
+			free(line);
+			free(current_config);
 			return false;
 		}
 		wlr_log(WLR_DEBUG, "Expanded line: %s", expanded);
@@ -607,7 +632,7 @@ bool read_config(FILE *file, struct sway_config *config) {
 		case CMD_FAILURE:
 		case CMD_INVALID:
 			wlr_log(WLR_ERROR, "Error on line %i '%s': %s (%s)", line_number,
-				line, res->error, config->current_config);
+				line, res->error, config->current_config_path);
 			success = false;
 			break;
 
@@ -652,6 +677,10 @@ bool read_config(FILE *file, struct sway_config *config) {
 	list_foreach(stack, free);
 	list_free(stack);
 
+	if (reading_main_config) {
+		current_config[config_size - 1] = '\0';
+		config->current_config = current_config;
+	}
 	return success;
 }
 

sway/ipc-json.c

@@ -2,6 +2,7 @@
 #include <stdio.h>
 #include <ctype.h>
 #include "log.h"
+#include "sway/config.h"
 #include "sway/ipc-json.h"
 #include "sway/tree/container.h"
 #include "sway/tree/workspace.h"
@@ -41,6 +42,7 @@ json_object *ipc_json_get_version() {
 	json_object_object_add(version, "major", json_object_new_int(major));
 	json_object_object_add(version, "minor", json_object_new_int(minor));
 	json_object_object_add(version, "patch", json_object_new_int(patch));
+	json_object_object_add(version, "loaded_config_file_name", json_object_new_string(config->current_config_path));
 
 	return version;
 }

sway/ipc-server.c

@@ -17,6 +17,7 @@
 #include <unistd.h>
 #include <wayland-server.h>
 #include "sway/commands.h"
+#include "sway/config.h"
 #include "sway/ipc-json.h"
 #include "sway/ipc-server.h"
 #include "sway/output.h"
@@ -681,6 +682,17 @@ void ipc_client_handle_command(struct ipc_client *client) {
 		goto exit_cleanup;
 	}
 
+	case IPC_GET_CONFIG:
+	{
+		json_object *json = json_object_new_object();
+		json_object_object_add(json, "config", json_object_new_string(config->current_config));
+		const char *json_string = json_object_to_json_string(json);
+		client_valid =
+			ipc_send_reply(client, json_string, (uint32_t)strlen(json_string));
+		json_object_put(json); // free
+		goto exit_cleanup;
+    }
+
 	default:
 		wlr_log(WLR_INFO, "Unknown IPC command type %i", client->current_command);
 		goto exit_cleanup;

swaymsg/main.c

@@ -240,6 +240,12 @@ static void pretty_print_version(json_object *v) {
 	printf("sway version %s\n", json_object_get_string(ver));
 }
 
+static void pretty_print_config(json_object *c) {
+	json_object *config;
+	json_object_object_get_ex(c, "config", &config);
+	printf("%s\n", json_object_get_string(config));
+}
+
 static void pretty_print_clipboard(json_object *v) {
 	if (success(v, true)) {
 		if (json_object_is_type(v, json_type_array)) {
@@ -277,7 +283,7 @@ static void pretty_print(int type, json_object *resp) {
 	if (type != IPC_COMMAND && type != IPC_GET_WORKSPACES &&
 			type != IPC_GET_INPUTS && type != IPC_GET_OUTPUTS &&
 			type != IPC_GET_VERSION && type != IPC_GET_CLIPBOARD &&
-			type != IPC_GET_SEATS) {
+			type != IPC_GET_SEATS && type != IPC_GET_CONFIG) {
 		printf("%s\n", json_object_to_json_string_ext(resp,
 			JSON_C_TO_STRING_PRETTY | JSON_C_TO_STRING_SPACED));
 		return;
@@ -288,6 +294,11 @@ static void pretty_print(int type, json_object *resp) {
 		return;
 	}
 
+	if (type == IPC_GET_CONFIG) {
+		pretty_print_config(resp);
+		return;
+	}
+
 	if (type == IPC_GET_CLIPBOARD) {
 		pretty_print_clipboard(resp);
 		return;
@@ -409,6 +420,8 @@ int main(int argc, char **argv) {
 		type = IPC_GET_VERSION;
 	} else if (strcasecmp(cmdtype, "get_binding_modes") == 0) {
 		type = IPC_GET_BINDING_MODES;
+	} else if (strcasecmp(cmdtype, "get_config") == 0) {
+		type = IPC_GET_CONFIG;
 	} else if (strcasecmp(cmdtype, "get_clipboard") == 0) {
 		type = IPC_GET_CLIPBOARD;
 	} else {

swaymsg/swaymsg.1.scd

@@ -62,6 +62,9 @@ _swaymsg_ [options...] [message]
 *get\_binding\_modes*
 	Gets a JSON-encoded list of currently configured binding modes.
 
+*get\_config*
+	Gets a JSON-encoded copy of the current configuration.
+
 *get\_clipboard*
 	Get JSON-encoded information about the clipboard.
 	Returns the current clipboard mime-types if called without