Implement XEP-0280: Message Carbons

src/core/Makefile

@@ -11,6 +11,7 @@ SRCS=	xmpp-commands.c \
 	rosters-tools.c \
 	stanzas.c \
 	tools.c \
+	xep/carbons.c \
 	xep/chatstates.c \
 	xep/composing.c \
 	xep/datetime.c \

src/core/xep/carbons.c

@@ -0,0 +1,138 @@
+/*
+ * Copyright (C) 2017 Stephen Paul Weber
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * 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 "misc.h"
+#include "settings.h"
+#include "signals.h"
+
+#include "rosters-tools.h"
+#include "xmpp-servers.h"
+#include "disco.h"
+#include "tools.h"
+#include "muc.h"
+
+#define XMLNS_CARBONS "urn:xmpp:carbons:2"
+
+static void
+sig_server_features(XMPP_SERVER_REC *server)
+{
+	if (disco_have_feature(server->server_features, XMLNS_CARBONS)) {
+		LmMessage *lmsg;
+		LmMessageNode *node;
+
+		lmsg = lm_message_new_with_sub_type(
+			NULL,
+			LM_MESSAGE_TYPE_IQ,
+			LM_MESSAGE_SUB_TYPE_SET
+		);
+		node = lm_message_node_add_child(lmsg->node, "enable", NULL);
+		lm_message_node_set_attribute(node, XMLNS, XMLNS_CARBONS);
+		signal_emit("xmpp send iq", 2, server, lmsg);
+		lm_message_unref(lmsg);
+	}
+}
+
+static void
+sig_recv_message(XMPP_SERVER_REC *server, LmMessage *lmsg, const int type,
+    const char *id, const char *from, const char *to)
+{
+	LmMessageNode *node = NULL;
+	LmMessageNode *forwarded = NULL;
+	LmMessageNode *message = NULL;
+	char *ffrom, *fto;
+
+	node = lm_find_node(lmsg->node, "received", "xmlns", XMLNS_CARBONS);
+	if(node) {
+		forwarded = lm_find_node(node, "forwarded", "xmlns", "urn:xmpp:forward:0");
+		if(forwarded) message = lm_find_node(forwarded, "message", "xmlns", "jabber:client");
+		if(message) {
+			ffrom = xmpp_recode_in(lm_message_node_get_attribute(message, "from"));
+			if (from == NULL)
+				from = g_strdup("");
+			fto = xmpp_recode_in(lm_message_node_get_attribute(message, "to"));
+			if (to == NULL)
+				to = g_strdup("");
+
+			node = lmsg->node;
+			lmsg->node = message;
+			signal_emit("xmpp recv message", 6, server, lmsg, type, id, ffrom, fto);
+			lmsg->node = node;
+			goto done;
+		}
+	}
+
+	node = lm_find_node(lmsg->node, "sent", "xmlns", XMLNS_CARBONS);
+	if(!node) return; // Not for us
+
+	forwarded = lm_find_node(node, "forwarded", "xmlns", "urn:xmpp:forward:0");
+	if(forwarded) message = lm_find_node(forwarded, "message", "xmlns", "jabber:client");
+	if(message) {
+		MUC_REC *channel;
+		char *nick, *str;
+		node = lm_message_node_get_child(message, "body");
+		if(node == NULL || node->value == NULL || *node->value == '\0') return;
+		str = xmpp_recode_in(node->value);
+
+		ffrom = xmpp_recode_in(lm_message_node_get_attribute(message, "from"));
+		if (from == NULL)
+			from = g_strdup("");
+		fto = xmpp_recode_in(lm_message_node_get_attribute(message, "to"));
+		if (to == NULL)
+			to = g_strdup("");
+
+		nick = rosters_resolve_name(server, fto);
+		if(nick) fto = nick;
+
+		if (type == LM_MESSAGE_SUB_TYPE_GROUPCHAT
+		    && (channel = get_muc(server, fto)) != NULL
+		    && (nick = muc_extract_nick(ffrom)) != NULL) {
+			signal_emit("message xmpp carbons sent", 6, server,
+			            str, nick, channel->name,
+			            GINT_TO_POINTER(SEND_TARGET_CHANNEL));
+			g_free(nick);
+		} else if ((type == LM_MESSAGE_SUB_TYPE_NOT_SET
+		           || type == LM_MESSAGE_SUB_TYPE_HEADLINE
+		           || type == LM_MESSAGE_SUB_TYPE_NORMAL
+		           || type == LM_MESSAGE_SUB_TYPE_CHAT)) {
+			signal_emit("message xmpp carbons sent", 6, server,
+			            str, ffrom, fto,
+			            GINT_TO_POINTER(SEND_TARGET_NICK));
+		}
+
+		g_free(str);
+	}
+
+done:
+	g_free(fto);
+	g_free(ffrom);
+	signal_stop();
+}
+
+void
+carbons_init(void)
+{
+	signal_add("xmpp server features", sig_server_features);
+	signal_add_first("xmpp recv message", sig_recv_message);
+}
+
+void
+carbons_deinit(void)
+{
+	signal_remove("xmpp server features", sig_server_features);
+	signal_remove("xmpp recv message", sig_recv_message);
+}

src/core/xep/carbons.h

@@ -0,0 +1,26 @@
+/*
+ * Copyright (C) 2017 Stephen Paul Weber
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * 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.
+ */
+
+#ifndef __CARBONS_H
+#define __CARBONS_H
+
+__BEGIN_DECLS
+void carbons_init(void);
+void carbons_deinit(void);
+__END_DECLS
+
+#endif

src/core/xep/xep.c

@@ -17,6 +17,7 @@
 
 #include "module.h"
 
+#include "carbons.h"
 #include "chatstates.h"
 #include "composing.h"
 #include "delay.h"
@@ -32,6 +33,7 @@ void
 xep_init(void)
 {
 	disco_init(); /* init sevice discovery first */
+	carbons_init();
 	chatstates_init();
 	composing_init();
 	delay_init();
@@ -47,6 +49,7 @@ void
 xep_deinit(void)
 {
 	disco_deinit();
+	carbons_deinit();
 	chatstates_deinit();
 	composing_deinit();
 	delay_deinit();

src/fe-common/Makefile

@@ -9,6 +9,7 @@ SRCS=	fe-xmpp-messages.c \
 	module-formats.c \
 	xmpp-completion.c \
 	xmpp-formats.c \
+	xep/fe-carbons.c \
 	xep/fe-composing.c \
 	xep/fe-delay.c \
 	xep/fe-muc.c \

src/fe-common/xep/fe-carbons.c

@@ -0,0 +1,80 @@
+/*
+ * Copyright (C) 2017 Stephen Paul Weber
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * 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 "levels.h"
+#include "module-formats.h"
+#include "printtext.h"
+#include "settings.h"
+#include "signals.h"
+#include "window-items.h"
+#include "fe-messages.h"
+#include "fe-queries.h"
+#include "fe-common/core/module-formats.h"
+#include "fe-common/core/fe-messages.h"
+#include "fe-common/irc/module-formats.h"
+
+#include "xmpp-servers.h"
+#include "rosters-tools.h"
+#include "xep/muc.h"
+
+static void
+sig_message_carbons_sent(SERVER_REC *server, const char *msg, const char *nick,
+                         const char *target, gpointer gpointer_type)
+{
+	void *item;
+	char *freemsg = NULL;
+	int level, type;
+
+	g_return_if_fail(server != NULL);
+	g_return_if_fail(msg != NULL);
+	g_return_if_fail(nick != NULL);
+	g_return_if_fail(target != NULL);
+
+	type = GPOINTER_TO_INT(gpointer_type);
+	level = MSGLEVEL_NO_ACT | MSGLEVEL_NOHILIGHT
+	    | (type == SEND_TARGET_CHANNEL ? MSGLEVEL_PUBLIC : MSGLEVEL_MSGS);
+	item = type == SEND_TARGET_CHANNEL ?
+	    (void *)get_muc((XMPP_SERVER_REC *)server, target) :
+	    query_find(server, target);
+
+	if (settings_get_bool("emphasis"))
+		msg = freemsg = expand_emphasis(item, msg);
+
+	if (type == SEND_TARGET_CHANNEL) {
+		char *nickmode = channel_get_nickmode(item, nick);
+		printformat_module(CORE_MODULE_NAME, server, target,
+		    level, TXT_OWN_MSG_CHANNEL, nick, target, msg, nickmode);
+	} else if(item) { // If no query, why do we want to see carbons?
+		printformat_module(CORE_MODULE_NAME, server, target,
+		    level, TXT_OWN_MSG_PRIVATE_QUERY, target, msg, nick);
+	}
+
+	g_free_not_null(freemsg);
+}
+
+void
+fe_carbons_init(void)
+{
+	signal_add("message xmpp carbons sent", sig_message_carbons_sent);
+}
+
+void
+fe_carbons_deinit(void)
+{
+	signal_remove("message xmpp carbons sent", sig_message_carbons_sent);
+}

src/fe-common/xep/fe-carbons.h

@@ -0,0 +1,9 @@
+#ifndef __FE_CARBONS_H
+#define __FE_CARBONS_H
+
+__BEGIN_DECLS
+void fe_carbons_init(void);
+void fe_carbons_deinit(void);
+__END_DECLS
+
+#endif

src/fe-common/xep/fe-xep.c

@@ -17,6 +17,7 @@
 
 #include "module.h"
 
+#include "fe-carbons.h"
 #include "fe-composing.h"
 #include "fe-delay.h"
 #include "fe-muc.h"
@@ -28,6 +29,7 @@
 void
 fe_xep_init(void)
 {
+	fe_carbons_init();
 	fe_composing_init();
 	fe_delay_init();
 	fe_muc_init();
@@ -40,6 +42,7 @@ fe_xep_init(void)
 void
 fe_xep_deinit(void)
 {
+	fe_carbons_deinit();
 	fe_composing_deinit();
 	fe_delay_deinit();
 	fe_muc_deinit();