mdev_helper.cpp: add device hotplug neutrino helper

.gitignore

@@ -41,3 +41,4 @@ src/rcsim.h
 src/rcsim
 src/gui/version.h
 src/nhttpd/nhttpd.conf
+src/mdev_helper

src/Makefile.am

@@ -153,6 +153,8 @@ bin_PROGRAMS += dt
 dt_SOURCES = dt.c
 bin_PROGRAMS += rcsim
 rcsim_SOURCES = rcsim.c rcsim.h
+bin_PROGRAMS += mdev_helper
+mdev_helper_SOURCES = mdev_helper.cpp
 
 endif
 if BOXTYPE_TRIPLE

src/mdev_helper.cpp

@@ -0,0 +1,98 @@
+/*
+	Neutrino-GUI  -   DBoxII-Project
+
+	Copyright (C) 2014 CoolStream International Ltd
+
+        License: GPLv2
+
+	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; version 2 of the License.
+
+	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., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include <stdio.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <unistd.h>
+#include <stdlib.h>
+
+#include "config.h"
+#include <neutrinoMessages.h>
+#include <eventserver.h>
+
+#include <string>
+
+const char *mdev_env[] = 
+{
+	"ACTION" ,
+	"MDEV" ,
+	"DEVPATH" ,
+	"INTERFACE",
+};
+
+#define ENV_SIZE (sizeof(mdev_env)/sizeof(char *))
+
+int main (int /*argc*/, char **argv)
+{
+	struct sockaddr_un servaddr;
+	int clilen, sock_fd;
+	std::string data;
+
+	memset(&servaddr, 0, sizeof(struct sockaddr_un));
+	servaddr.sun_family = AF_UNIX;
+	strncpy(servaddr.sun_path, NEUTRINO_UDS_NAME, sizeof(servaddr.sun_path) - 1);
+	clilen = sizeof(servaddr.sun_family) + strlen(servaddr.sun_path);
+
+	if ((sock_fd = socket(AF_UNIX, SOCK_STREAM, 0)) < 0)
+	{
+		perror("error open socket " NEUTRINO_UDS_NAME);
+		exit(1);
+	}
+
+	if (connect(sock_fd, (struct sockaddr*) &servaddr, clilen) < 0)
+	{
+		perror("error connect socket " NEUTRINO_UDS_NAME);
+		goto _error;
+	}
+
+	for (unsigned i = 0; i < ENV_SIZE; i++) {
+		char * s = getenv(mdev_env[i]);
+		if (s)
+			data += std::string(mdev_env[i]) + "=" + s + " ";
+	}
+
+	if (data.empty()) {
+		printf("%s: env data empty\n", argv[0]);
+		goto _error;
+	}
+
+	CEventServer::eventHead head;
+
+	head.eventID = NeutrinoMessages::EVT_HOTPLUG;
+	head.initiatorID = CEventServer::INITID_NEUTRINO;
+	head.dataSize = data.size() + 1;
+
+	if (write(sock_fd, &head, sizeof(head)) != sizeof(head)) {
+		perror("write event");
+		goto _error;
+	}
+
+	if (write(sock_fd, data.c_str(), head.dataSize) != (ssize_t) head.dataSize) {
+		perror("write data");
+		goto _error;
+	}
+	close(sock_fd);
+	exit(0);
+_error:
+	close(sock_fd);
+	exit(1);
+}