add daemon plugin

Makefile

@@ -12,9 +12,9 @@ ifeq ($(UNAME_S),Darwin)
 endif
 
 #-lsocket
-PLUGINS=	dummy.$(EXT) fileman.$(EXT) pluginsman.$(EXT) wterm.$(EXT) 
+PLUGINS=	dummy.$(EXT) fileman.$(EXT) pluginsman.$(EXT) wterm.$(EXT) nodedaemon.$(EXT)
 
-PLUGINSDEP = plugins/plugin.o plugins/dbhelper.o plugins/dictionary.o plugins/utils.o plugins/list.o
+PLUGINSDEP = plugins/ini.o plugins/plugin.o plugins/dbhelper.o plugins/dictionary.o plugins/utils.o plugins/list.o
 PLUGINLIBS = -lsqlite3
 
 main: httpd plugins 
@@ -40,7 +40,7 @@ clean: sclean pclean
 sclean:
 	rm -f *.o build/httpd
 pclean:
-	rm -f $(BUILDIRD)/plugins/* plugins/*.o
+	rm -rf $(BUILDIRD)/plugins/* plugins/*.o
 	-for file in plugins/* ;do \
 		if [ -d "$$file" ]; then \
 			rm "$$file"/*.o; \

build/config.ini

@@ -5,3 +5,9 @@ plugins_ext=.dylib ; plugins extensions
 database=/Users/mrsang/Google Drive/ushare/cwp/ant-http/build/databases/
 htdocs=/Users/mrsang/Google Drive/ushare/cwp/ant-http/build/htdocs
 tmpdir=/Users/mrsang/Google Drive/ushare/cwp/ant-http/build/tmp/
+
+; This enable some plugins to be initialised at server startup
+[AUTOSTART]
+plugin = nodedaemon
+;plugin=ffvm 
+;plugin=dummy

httpd.c

@@ -9,7 +9,7 @@ static int config_handler(void* conf, const char* section, const char* name,
                    const char* value)
 {
     config_t* pconfig = (config_t*)conf;
-
+	char * ppath = NULL;
     if (MATCH("SERVER", "port")) {
         pconfig->port = atoi(value);
     } else if (MATCH("SERVER", "plugins")) {
@@ -22,6 +22,10 @@ static int config_handler(void* conf, const char* section, const char* name,
         pconfig->htdocs = strdup(value);
     } else if(MATCH("SERVER", "tmpdir")) {
         pconfig->tmpdir = strdup(value);
+    }else if(strcmp(section,"AUTOSTART")==0){
+		// The server section must be added before the autostart section
+		// auto start plugin
+		plugin_load(value);
     } else {
         return 0;  /* unknown section/name, error */
     }

plugin_manager.c

@@ -391,7 +391,7 @@ void * plugin_from_file(char* name)
 	void *lib_handle;
   char* error;
   char* path = __s("%s%s%s",server_config.plugins_dir,name,server_config.plugins_ext);
-  void (*fn)(const char*,const char*,const char*,const char*);
+  void (*fn)(const char*,const char*,const char*,const char*,int);
    lib_handle = dlopen(path, RTLD_LAZY);
    if (!lib_handle) 
    {
@@ -399,32 +399,20 @@ void * plugin_from_file(char* name)
       return NULL;
    }
    // set database path
-   fn = (void (*)(const char *, const char *, const char *, const char *))dlsym(lib_handle, "__init_plugin__");
+   fn = (void (*)(const char *, const char *, const char *, const char *,int))dlsym(lib_handle, "__init_plugin__");
   if ((error = dlerror()) != NULL)  
   		LOG("Problem when setting data path for %s : %s \n", name,error);
   else
-    (*fn)(name,server_config.db_path, server_config.htdocs,server_config.plugins_dir);
+    (*fn)(name,server_config.db_path, server_config.htdocs,server_config.plugins_dir,server_config.port);
 	free(path);
    return lib_handle;
 }
 
-
-
-/**
- * Unload all the plugin loaded on the plugin table
- */
-void unload_all_plugin()
+void unload_plugin(struct plugin_entry* np)
 {
-	LOG("Unload all plugins\n");
-	void (*fn)();
 	char* error;
-	for(int i=0;i<HASHSIZE;i++)
-	{
-		struct plugin_entry *np;
-    	for (np = plugin_table[i]; np != NULL; np = np->next)
-    	{
-			// execute the exit function if exists
-		 	// load the function
+	void (*fn)() = NULL;
+	// find and execute the exit function
     fn = (void (*)())dlsym(np->handle, "pexit");
  	if ((error = dlerror()) != NULL)  
  	{
@@ -439,6 +427,43 @@ void unload_all_plugin()
 	//free((void *) np->handle);
 	free((void *) np->pname);
 }
+/*
+	Unload a plugin by its name
+*/
+void unload_plugin_by_name(const char* name)
+{
+	LOG("%s\n","Unloading thing");
+	struct plugin_entry *np;
+	int hasval = hash(name, HASHSIZE);
+	np = plugin_table[hasval];
+	if(strcmp(np->pname,name) == 0)
+	{
+		unload_plugin(np);
+		plugin_table[hasval] = np->next;
+	}
+	else
+	{
+	    for (np; np != NULL; np = np->next)
+	        if (np->next != NULL  && strcmp(name, np->next->pname) == 0)
+				break;
+		if(np == NULL) return; // the plugin is is not loaded
+		unload_plugin(np->next);
+		np->next = np->next->next;
+	}
+}
+/**
+ * Unload all the plugin loaded on the plugin table
+ */
+void unload_all_plugin()
+{
+	LOG("Unload all plugins\n");
+	for(int i=0;i<HASHSIZE;i++)
+	{
+		struct plugin_entry *np;
+    	for (np = plugin_table[i]; np != NULL; np = np->next)
+    	{
+			unload_plugin(np);
+        }
         plugin_table[i] = NULL;
 	}
 	exit(0);

plugin_manager.h

@@ -18,6 +18,8 @@ struct plugin_entry *plugin_lookup(char *s);
 /* install: put (name, defn) in hashtab */
 struct plugin_entry *plugin_load(char *name);
 void unload_all_plugin();
+void unload_plugin(struct plugin_entry*);
+void unload_plugin_by_name(const char*);
 void * plugin_from_file(char* name);
 char* post_url_decode(int client,int len);
 dictionary decode_url_request(const char* query);

plugins/dummy/dummy.c

@@ -15,7 +15,10 @@ void init()
 		dbquery(db,sql,NULL);
 	printf("Finish init\n");
 }
-
+void pexit()
+{
+	LOG("%s\n","Plugin DUMMY is exited");
+}
 void execute(int client,const char* method,dictionary rq)
 {
 
@@ -50,7 +53,6 @@ void execute(int client,const char* method,dictionary rq)
 	__t(client, "],\"total\":%d}",records->idx);
 	free(records);
 	//__t(client, query);
-	
 }
 
 // delete record

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");
+}

plugins/plugin.c

@@ -1,16 +1,18 @@
 #include "plugin.h"
 
 plugin_header __plugin__;
-call __init__;
 // private function
+call __init__;
 
-void __init_plugin__(const char* pl,const char*ph,const char* htdocs, const char* pdir){
+void __init_plugin__(const char* pl,const char*ph,const char* htdocs, const char* pdir,int port){
 	__plugin__.name = strdup(pl);
 	__plugin__.dbpath= strdup(ph);
 	__plugin__.htdocs = strdup(htdocs);
 	__plugin__.pdir = strdup(pdir);
+	__plugin__.sport = port;
 	if(__init__ != NULL) __init__();
 }; 
+
 #ifdef USE_DB
 sqldb getdb()
 {
@@ -241,3 +243,11 @@ void set_cookie(int client,dictionary dic)
 	}
 	response(client,"");
 }
+char* config_dir()
+{
+	struct stat st;
+	char* path = __s("%s%s%s", __plugin__.pdir,DIR_SEP, __plugin__.name);
+	if (stat(path, &st) == -1)
+		mkdir(path, 0755);
+	return path;
+}

plugins/plugin.h

@@ -22,6 +22,7 @@ typedef struct  {
     char *dbpath;
     char * htdocs;
     char*pdir;
+	int *sport;
 } plugin_header;
 
  
@@ -49,6 +50,7 @@ int __b(int, const unsigned char*, int);
 int __f(int, const char*);
 int __fb(int, const char*);
 int upload(const char*, const char*);
+char* config_dir();
 char* route(const char*);
 char* htdocs(const char*);
 #ifdef USE_DB