add daemon plugin

plugins/nodedaemon/nodedaemon.c

@@ -0,0 +1,145 @@
+// network support
+#include <netinet/in.h>
+#include <ifaddrs.h>
+#include <arpa/inet.h>
+#include <pthread.h>
+#include <errno.h>
+#include <sys/socket.h>
+#include <time.h>
+#include <resolv.h>
+
+#include "../plugin.h"
+#define RQ 
+#define REQUEST_PATTERN  "POST /node_register HTTP/1.0\r\nHost: antd\r\nUser-Agent: antd\r\nContent-Type: application/json\r\nContent-Length: %d\r\n\r\n%s"
+#define JSON_MSG  "{\"ip\":\"%s\",\"port\":\"%d\"}"
+void init();
+struct master_conf_t{
+	int port;
+	char* ip;
+} ;
+
+struct master_conf_t mconfig;
+
+call __init__ = init;
+int request_socket(const char* ip, int port)
+{
+	int sockfd = -1;
+	struct sockaddr_in dest;
+	char* request;
+	// time out setting
+	struct timeval timeout;      
+	timeout.tv_sec = 3;
+	timeout.tv_usec = 0;
+	if ( (sockfd = socket(AF_INET, SOCK_STREAM, 0)) < 0 )
+	{
+		perror("Socket");
+		return -1;
+	}
+	if (setsockopt (sockfd, SOL_SOCKET, SO_RCVTIMEO, &timeout,sizeof(timeout)) < 0)
+	        perror("setsockopt failed\n");
+
+    //if (setsockopt (sockfd, SOL_SOCKET, SO_SNDTIMEO, (char *)&timeout,sizeof(timeout)) < 0)
+    //    perror("setsockopt failed\n");
+	
+    bzero(&dest, sizeof(dest));
+    dest.sin_family = AF_INET;
+    dest.sin_port = htons(port);
+    if ( inet_aton(ip, &dest.sin_addr.s_addr) == 0 )
+    {
+		perror(ip);
+		close(sockfd);
+		return -1;
+    }
+	if ( connect(sockfd, (struct sockaddr*)&dest, sizeof(dest)) != 0 )
+	{
+		close(sockfd);
+		//perror("Connect");
+		return -1;
+	}
+	return sockfd;
+}
+
+char* get_ip_address()
+{
+	struct ifaddrs* addrs;
+	getifaddrs(&addrs);
+	struct ifaddrs* tmp = addrs;
+	char* ip;
+	while (tmp) 
+	{
+	    if (tmp->ifa_addr && tmp->ifa_addr->sa_family == AF_INET)
+	    {
+			struct sockaddr_in *pAddr = (struct sockaddr_in *)tmp->ifa_addr;
+	        ip = inet_ntoa(pAddr->sin_addr);
+			if(strcmp(ip,"127.0.0.1") != 0) 
+				return ip;
+	    }
+	    tmp = tmp->ifa_next;
+	}
+	freeifaddrs(addrs);
+	return "127.0.0.1";
+}
+int inform_master()
+{
+	int sockfd;
+	//rpc_response_t* rdata = NULL;
+	char* request;
+	char* data = __s(JSON_MSG,get_ip_address(),__plugin__.sport);
+	while((sockfd = request_socket(mconfig.ip, mconfig.port)) == -1)
+	{
+		// wait for 3s and then request to server
+		usleep(3000000);
+	} 
+    request = __s(REQUEST_PATTERN, strlen(data), data);
+	send(sockfd,request, strlen(request),0);
+	//rdata = parse_response(sockfd);
+	close(sockfd);
+	LOG("%s","OK, master registered \n");
+	free(request);
+	return 0;
+}
+static int config_handler(void* conf, const char* section, const char* name,
+                   const char* value)
+{
+    struct master_conf_t* pconfig = (struct master_conf_t*)conf;
+	char * ppath = NULL;
+    if (strcmp(name, "port") == 0) {
+        pconfig->port = atoi(value);
+    } else if (strcmp(name, "ip") == 0) {
+		pconfig->ip = strdup(value);
+    }  else {
+        return 0;
+    }
+    return 1;
+}
+void read_config()
+{
+	mconfig.ip = "127.0.0.1";
+	mconfig.port = 8080;
+	char* file = __s("%s%s%s.ini",config_dir(), DIR_SEP, __plugin__.name);
+	if (ini_parse(file, config_handler, &mconfig) < 0) {
+		LOG("Can't load '%s'\n. Used defaut configuration", file);
+	}
+	printf("%s %d\n",mconfig.ip, mconfig.port );
+} 
+void init()
+{
+	read_config();
+	pthread_t newthread;
+	if (pthread_create(&newthread , NULL,(void(*)()) inform_master, NULL) != 0)
+		perror("pthread_create: cannot create daemon for finding master");
+	else
+	{
+		//reclaim the stack data when thread finish
+		pthread_detach(newthread) ;
+	}
+}
+void pexit()
+{
+	LOG("%s","EXIT daemon");
+}
+void execute(int c, const char* m, dictionary d)
+{
+	text(c);
+	__t(c,"This is a system plugin. It cant be acessed from the web");
+}