cli: implemented shutdown command to shutdown daemon

.gitignore

@@ -1,2 +1,3 @@
 build
 *.swp
+scripts

accel-pptpd/cli/std_cmd.c

@@ -1,8 +1,11 @@
 #include <stdio.h>
 #include <time.h>
 #include <string.h>
+#include <unistd.h>
+#include <signal.h>
 
 #include "triton.h"
+#include "events.h"
 #include "ppp.h"
 #include "cli.h"
 #include "utils.h"
@@ -281,11 +284,51 @@ static void terminate_help(char * const *fields, int fields_cnt, void *client)
 	cli_send(client, "terminate all [soft|hard]- terminate all session\r\n");
 }
 
+//=============================
+
+static void shutdown_help(char * const *fields, int fields_cnt, void *client)
+{
+	cli_send(client, "shutdown [soft|hard]- shutdown daemon\r\n");
+	cli_send(client, "\t\tdefault action - send termination signals to all clients and wait everybody disconnects\r\n");
+	cli_send(client, "\t\tsoft - wait until all clients disconnects, don't accept new connections\r\n");
+	cli_send(client, "\t\thard - shutdown now, don't wait anything\r\n");
+}
+
+static int shutdown_exec(const char *cmd, char * const *f, int f_cnt, void *cli)
+{
+	int hard = 0;
+	struct ppp_t *ppp;
+
+	if (f_cnt == 2) {
+		if (!strcmp(f[1], "soft")) {
+			triton_event_fire(EV_SHUTDOWN_SOFT, NULL);
+			return CLI_CMD_OK;
+		} else if (!strcmp(f[1], "hard"))
+			hard = 1;
+		else
+			return CLI_CMD_SYNTAX;
+	}
+
+	triton_event_fire(EV_SHUTDOWN_SOFT, NULL);
+
+	pthread_rwlock_rdlock(&ppp_lock);
+	list_for_each_entry(ppp, &ppp_list, entry) {
+		if (hard)
+			triton_context_call(ppp->ctrl->ctx, (triton_event_func)ppp_terminate_hard, ppp);
+		else
+			triton_context_call(ppp->ctrl->ctx, (triton_event_func)ppp_terminate_soft, ppp);
+	}
+	pthread_rwlock_unlock(&ppp_lock);
+
+	return CLI_CMD_OK;
+}
+
 static void __init init(void)
 {
 	cli_register_simple_cmd2(show_stat_exec, show_stat_help, 2, "show", "stat");
 	cli_register_simple_cmd2(show_ses_exec, show_ses_help, 2, "show", "sessions");
 	cli_register_simple_cmd2(terminate_exec, terminate_help, 1, "terminate");
+	cli_register_simple_cmd2(shutdown_exec, shutdown_help, 1, "shutdown");
 	cli_register_simple_cmd2(exit_exec, exit_help, 1, "exit");
 }
 

accel-pptpd/ctrl/l2tp/l2tp.c

@@ -50,6 +50,8 @@ int conf_retransmit = 5;
 int conf_hello_interval = 60;
 const char *conf_host_name = "accel-pptp";
 
+static int shutdown_soft;
+
 static uint32_t stat_active;
 static uint32_t stat_starting;
 
@@ -638,6 +640,9 @@ static int l2tp_recv_SCCRQ(struct l2tp_serv_t *serv, struct l2tp_packet_t *pack)
 	struct l2tp_attr_t *framing_cap = NULL;
 	struct l2tp_attr_t *router_id = NULL;
 	
+	if (shutdown_soft)
+		return 0;
+
 	list_for_each_entry(attr, &pack->attrs, entry) {
 		switch (attr->attr->id) {
 			case Protocol_Version:
@@ -1107,6 +1112,11 @@ static int show_stat_exec(const char *cmd, char * const *fields, int fields_cnt,
 	return CLI_CMD_OK;
 }
 
+static void ev_shutdown_soft(void)
+{
+	shutdown_soft = 1;
+}
+
 static void __init l2tp_init(void)
 {
 	char *opt;
@@ -1143,5 +1153,7 @@ static void __init l2tp_init(void)
 	start_udp_server();
 
 	cli_register_simple_cmd2(&show_stat_exec, NULL, 2, "show", "stat");
+
+	triton_event_register_handler(EV_SHUTDOWN_SOFT, (triton_event_func)ev_shutdown_soft);
 }
 

accel-pptpd/ctrl/pppoe/pppoe.c

@@ -62,6 +62,8 @@ char *conf_ac_name;
 int conf_pado_delay;
 int conf_ifname_in_sid;
 
+static int shutdown_soft;
+
 static mempool_t conn_pool;
 static mempool_t pado_pool;
 
@@ -628,7 +630,8 @@ static void pado_timer(struct triton_timer_t *t)
 {
 	struct delayed_pado_t *pado = container_of(t, typeof(*pado), timer);
 
-	pppoe_send_PADO(pado->serv, pado->addr, pado->host_uniq, pado->relay_sid, pado->service_name);
+	if (!shutdown_soft)
+		pppoe_send_PADO(pado->serv, pado->addr, pado->host_uniq, pado->relay_sid, pado->service_name);
 
 	free_delayed_pado(pado);
 }
@@ -644,6 +647,9 @@ static void pppoe_recv_PADI(struct pppoe_serv_t *serv, uint8_t *pack, int size)
 	int n, service_match = 0;
 	struct delayed_pado_t *pado;
 
+	if (shutdown_soft)
+		return;
+
 	if (hdr->sid) {
 		log_warn("pppoe: discarding PADI packet (sid is not zero)\n");
 		return;
@@ -737,6 +743,9 @@ static void pppoe_recv_PADR(struct pppoe_serv_t *serv, uint8_t *pack, int size)
 	int n, service_match = 0;
 	struct pppoe_conn_t *conn;
 
+	if (shutdown_soft)
+		return;
+
 	if (!memcmp(ethhdr->h_dest, bc_addr, ETH_ALEN)) {
 		if (conf_verbose)
 			log_warn("pppoe: discard PADR (destination address is broadcast)\n");
@@ -1102,6 +1111,11 @@ static void _server_stop(struct pppoe_serv_t *serv)
 	pthread_mutex_unlock(&serv->lock);
 }
 
+static void ev_shutdown_soft(void)
+{
+	shutdown_soft = 1;
+}
+
 void pppoe_server_free(struct pppoe_serv_t *serv)
 {
 	struct delayed_pado_t *pado;
@@ -1206,5 +1220,7 @@ static void __init pppoe_init(void)
 
 	if (!conf_ac_name)
 		conf_ac_name = _strdup("accel-pptp");
+	
+	triton_event_register_handler(EV_SHUTDOWN_SOFT, (triton_event_func)ev_shutdown_soft);
 }
 

accel-pptpd/ctrl/pptp/pptp.c

@@ -56,6 +56,7 @@ static int conf_timeout = 5;
 static int conf_echo_interval = 0;
 static int conf_echo_failure = 3;
 static int conf_verbose = 0;
+static int shutdown_soft;
 
 static mempool_t conn_pool;
 
@@ -617,6 +618,11 @@ static int pptp_connect(struct triton_md_handler_t *h)
 			continue;
 		}
 
+		if (shutdown_soft) {
+			close(sock);
+			continue;
+		}
+
 		log_info2("pptp: new connection from %s\n", inet_ntoa(addr.sin_addr));
 
 		if (iprange_client_check(addr.sin_addr.s_addr)) {
@@ -694,6 +700,11 @@ static int show_stat_exec(const char *cmd, char * const *fields, int fields_cnt,
 	return CLI_CMD_OK;
 }
 
+static void ev_shutdown_soft(void)
+{
+	shutdown_soft = 1;
+}
+
 static void __init pptp_init(void)
 {
   struct sockaddr_in addr;
@@ -756,5 +767,7 @@ static void __init pptp_init(void)
 	triton_context_wakeup(&serv.ctx);
 
 	cli_register_simple_cmd2(show_stat_exec, NULL, 2, "show", "stat");
+
+	triton_event_register_handler(EV_SHUTDOWN_SOFT, (triton_event_func)ev_shutdown_soft);
 }
 

accel-pptpd/include/events.h

@@ -13,6 +13,7 @@
 #define EV_CTRL_FINISHED    8
 #define EV_PPP_PRE_UP       9
 #define EV_PPP_ACCT_START   10
+#define EV_SHUTDOWN_SOFT    11
 #define EV_IP_CHANGED       100
 #define EV_SHAPER           101
 #define EV_MPPE_KEYS        102

accel-pptpd/ppp/ppp.c

@@ -8,6 +8,7 @@
 #include <sys/ioctl.h>
 #include <arpa/inet.h>
 #include <features.h>
+#include <signal.h>
 #include "linux_ppp.h"
 
 #include <openssl/md5.h>
@@ -30,6 +31,8 @@ __export LIST_HEAD(ppp_list);
 static LIST_HEAD(layers);
 int __export sock_fd;
 
+static int ppp_shutdown;
+
 static unsigned long long seq;
 #if __WORDSIZE == 32
 static spinlock_t seq_lock;
@@ -226,6 +229,9 @@ static void destablish_ppp(struct ppp_t *ppp)
 		_free(ppp->username);
 		ppp->username = NULL;
 	}
+	
+	if (ppp_shutdown && !ppp_stat.starting && !ppp_stat.active && !ppp_stat.finishing)
+		kill(getpid(), SIGTERM);
 }
 
 /*void print_buf(uint8_t *buf, int size)
@@ -592,6 +598,14 @@ struct ppp_layer_data_t *ppp_find_layer_data(struct ppp_t *ppp, struct ppp_layer
 	return NULL;
 }
 
+static void ev_shutdown_soft(void)
+{
+	ppp_shutdown = 1;
+
+	if (!ppp_stat.starting && !ppp_stat.active && !ppp_stat.finishing)
+		kill(getpid(), SIGTERM);
+}
+
 static void save_seq(void)
 {
 	FILE *f;
@@ -633,6 +647,8 @@ static void __init init(void)
 		//log_emerg("ppp: failed to open seq-file (%s): %s\n", opt, strerror(errno));
 		seq = (unsigned long long)random() * (unsigned long long)random();
 
+	triton_event_register_handler(EV_SHUTDOWN_SOFT, (triton_event_func)ev_shutdown_soft);
+
 	atexit(save_seq);
 }
 

accel-pptpd/ppp/ppp.h

@@ -173,6 +173,8 @@ int ppp_register_layer(const char *name, struct ppp_layer_t *);
 void ppp_unregister_layer(struct ppp_layer_t *);
 struct ppp_layer_data_t *ppp_find_layer_data(struct ppp_t *, struct ppp_layer_t *);
 
+void ppp_shutdown_soft(void);
+
 extern int conf_ppp_verbose;
 
 extern pthread_rwlock_t ppp_lock;