Add capability mode error/success messages.

Signed-off-by: Edward Tomasz Napierala <trasz@FreeBSD.org>

src/core/capsicum.c

@@ -30,17 +30,37 @@ static void cmd_cap_enter(void)
 	int error;
 
 	error = cap_enter();
-	if (error != 0)
+	if (error != 0) {
-		g_error("cap_enter(2) failed: %s", strerror(errno));
+		signal_emit("capability mode failed", 1, strerror(errno));
+	} else {
+		signal_emit("capability mode enabled", 0);
+	}
+}
+
+static void cmd_cap_getmode(void)
+{
+	u_int mode;
+	int error;
+
+	error = cap_getmode(&mode);
+	if (error != 0) {
+		signal_emit("capability mode failed", 1, strerror(errno));
+	} else if (mode == 0) {
+		signal_emit("capability mode disabled", 0);
+	} else {
+		signal_emit("capability mode enabled", 0);
+	}
 }
 
 void capsicum_init(void)
 {
 
 	command_bind("cap_enter", NULL, (SIGNAL_FUNC) cmd_cap_enter);
+	command_bind("cap_getmode", NULL, (SIGNAL_FUNC) cmd_cap_getmode);
 }
 
 void capsicum_deinit(void)
 {
 	command_unbind("cap_enter", (SIGNAL_FUNC) cmd_cap_enter);
+	command_unbind("cap_getmode", (SIGNAL_FUNC) cmd_cap_getmode);
 }

src/fe-common/core/Makefile.am

@@ -38,6 +38,11 @@ libfe_common_core_a_SOURCES = \
 	windows-layout.c \
 	fe-windows.c
 
+if HAVE_CAPSICUM
+libfe_common_core_a_SOURCES += \
+	fe-capsicum.c
+endif
+
 pkginc_fe_common_coredir=$(pkgincludedir)/src/fe-common/core
 pkginc_fe_common_core_HEADERS = \
 	command-history.h \

src/fe-common/core/fe-capsicum.c

@@ -0,0 +1,60 @@
+/*
+ fe-capsicum.c : irssi
+
+    Copyright (C) 2017 Edward Tomasz Napierala <trasz@FreeBSD.org>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License along
+    with this program; if not, write to the Free Software Foundation, Inc.,
+    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+
+#include "module.h"
+#include "module-formats.h"
+#include "signals.h"
+#include "printtext.h"
+
+#include "levels.h"
+#include "servers.h"
+
+static void capability_mode_enabled(void)
+{
+
+	printformat(NULL, NULL, MSGLEVEL_CLIENTNOTICE, TXT_CAPSICUM_ENABLED);
+}
+
+static void capability_mode_disabled(void)
+{
+
+	printformat(NULL, NULL, MSGLEVEL_CLIENTNOTICE, TXT_CAPSICUM_DISABLED);
+}
+
+static void capability_mode_failed(gchar *msg)
+{
+
+	printformat(NULL, NULL, MSGLEVEL_CLIENTERROR, TXT_CAPSICUM_FAILED, msg);
+}
+
+void fe_capsicum_init(void)
+{
+
+	signal_add("capability mode enabled", (SIGNAL_FUNC) capability_mode_enabled);
+	signal_add("capability mode disabled", (SIGNAL_FUNC) capability_mode_disabled);
+	signal_add("capability mode failed", (SIGNAL_FUNC) capability_mode_failed);
+}
+
+void fe_capsicum_deinit(void)
+{
+	signal_remove("capability mode enabled", (SIGNAL_FUNC) capability_mode_enabled);
+	signal_remove("capability mode disabled", (SIGNAL_FUNC) capability_mode_disabled);
+	signal_remove("capability mode failed", (SIGNAL_FUNC) capability_mode_failed);
+}

src/fe-common/core/fe-capsicum.h

@@ -0,0 +1,7 @@
+#ifndef __FE_CAPSICUM_H
+#define __FE_CAPSICUM_H
+
+void fe_capsicum_init(void);
+void fe_capsicum_deinit(void);
+
+#endif

src/fe-common/core/fe-common-core.c

@@ -32,6 +32,7 @@
 #include "special-vars.h"
 #include "fe-core-commands.h"
 #include "fe-queries.h"
+#include "fe-capsicum.h"
 #include "hilight-text.h"
 #include "command-history.h"
 #include "completion.h"
@@ -179,6 +180,7 @@ void fe_common_core_init(void)
 	fe_server_init();
 	fe_settings_init();
 	fe_tls_init();
+	fe_capsicum_init();
 	windows_init();
 	window_activity_init();
 	window_commands_init();
@@ -221,6 +223,7 @@ void fe_common_core_deinit(void)
 	fe_server_deinit();
 	fe_settings_deinit();
 	fe_tls_deinit();
+	fe_capsicum_deinit();
 	windows_deinit();
 	window_activity_deinit();
 	window_commands_deinit();

src/fe-common/core/module-formats.c

@@ -290,6 +290,9 @@ FORMAT_REC fecommon_core_formats[] = {
 	{ "completion_header", "%#Key        Value                                    Auto", 0 },
 	{ "completion_line", "%#$[10]0 $[!40]1 $2", 3, { 0, 0, 0 } },
 	{ "completion_footer", "", 0 },
+	{ "capsicum_enabled", "Capability mode enabled", 0 },
+	{ "capsicum_disabled", "Capability mode not enabled", 0 },
+	{ "capsicum_failed", "Capability mode failed: $0", 1, { 0 } },
 
 	/* ---- */
 	{ NULL, "TLS", 0 },

src/fe-common/core/module-formats.h

@@ -255,6 +255,9 @@ enum {
 	TXT_COMPLETION_HEADER,
         TXT_COMPLETION_LINE,
 	TXT_COMPLETION_FOOTER,
+	TXT_CAPSICUM_ENABLED,
+	TXT_CAPSICUM_DISABLED,
+	TXT_CAPSICUM_FAILED,
 
 	TLS_FILL_15,