UNIX Domain socket server, it allows more flexible communication between ser

and SEMS or AA than the FIFO interface.

New variables in the script:
unix_sock -- It should be set to the name of the socket
unix_sock_children -- number of processes that will be listening on the socket.

cfg.lex

@@ -174,6 +174,8 @@ FIFO fifo
 FIFO_DIR  fifo_dir
 FIFO_MODE fifo_mode
 FIFO_DB_URL fifo_db_url
+UNIX_SOCK unix_sock
+UNIX_SOCK_CHILDREN unix_sock_children
 AVP_DB_URL  avp_db_url
 SERVER_SIGNATURE server_signature
 REPLY_TO_VIA reply_to_via
@@ -366,6 +368,8 @@ EAT_ABLE	[\ \t\b\r]
 <INITIAL>{FIFO_DIR}	{ count(); yylval.strval=yytext; return FIFO_DIR; }
 <INITIAL>{FIFO_DB_URL}	{ count(); yylval.strval=yytext; return FIFO_DB_URL; }
 <INITIAL>{FIFO_MODE}	{ count(); yylval.strval=yytext; return FIFO_MODE; }
+<INITIAL>{UNIX_SOCK} { count(); yylval.strval=yytext; return UNIX_SOCK; }
+<INITIAL>{UNIX_SOCK_CHILDREN} { count(); yylval.strval=yytext; return UNIX_SOCK_CHILDREN; }
 <INITIAL>{AVP_DB_URL}	{ count(); yylval.strval=yytext; return AVP_DB_URL; }
 <INITIAL>{SERVER_SIGNATURE}	{ count(); yylval.strval=yytext; return SERVER_SIGNATURE; }
 <INITIAL>{REPLY_TO_VIA}	{ count(); yylval.strval=yytext; return REPLY_TO_VIA; }

cfg.y

@@ -199,6 +199,8 @@ static struct id_list* mk_listen_id(char*, int, int);
 %token FIFO_DIR
 %token FIFO_MODE
 %token FIFO_DB_URL
+%token UNIX_SOCK
+%token UNIX_SOCK_CHILDREN
 %token AVP_DB_URL
 %token SERVER_SIGNATURE
 %token REPLY_TO_VIA
@@ -408,6 +410,10 @@ assign_stm:	DEBUG EQUAL NUMBER { debug=$3; }
 		| FIFO_MODE EQUAL error { yyerror("int value expected"); }
 		| FIFO_DB_URL EQUAL STRING { fifo_db_url=$3; }
 		| FIFO_DB_URL EQUAL error  { yyerror("string value expected"); }
+                | UNIX_SOCK EQUAL STRING { unixsock_name=$3; }
+                | UNIX_SOCK EQUAL error { yyerror("string value expected"); }
+                | UNIX_SOCK_CHILDREN EQUAL NUMBER { unixsock_children=$3; }
+                | UNIX_SOCK_CHILDREN EQUAL error { yyerror("int value expected\n"); }
 		| AVP_DB_URL EQUAL STRING { avp_db_url=$3; }
 		| AVP_DB_URL EQUAL error  { yyerror("string value expected"); }
 		| USER EQUAL STRING     { user=$3; }

globals.h

@@ -107,6 +107,10 @@ extern int fifo_mode;
 char extern *fifo_dir; /* dir. where  reply fifos are allowed */
 extern char *fifo_db_url;  /* db url used by db_fifo interface */
 
+/* UNIX domain socket configuration */
+extern char *unixsock_name;   /* The name of the socket */
+extern int unixsock_children; /* The number of listening children */
+
 /* AVP configuration */
 extern char *avp_db_url;  /* db url used by user preferences (AVPs) */
 

main.c

@@ -94,6 +94,7 @@
 #include "parser/parse_hname2.h"
 #include "parser/digest/digest_parser.h"
 #include "fifo_server.h"
+#include "unixsock_server.h"
 #include "usr_avp.h"
 #include "name_alias.h"
 #include "hash_func.h"
@@ -231,7 +232,8 @@ Options:\n\
     -u uid       Change uid \n\
     -g gid       Change gid \n\
     -P file      Create a pid file\n\
-    -i fifo_path Create a fifo (usefull for monitoring " NAME ") \n"
+    -i fifo_path Create a fifo (usefull for monitoring " NAME ") \n\
+    -x socket    Create a unix domain socket \n"
 #ifdef STATS
 "    -s file     File to which statistics is dumped (disabled otherwise)\n"
 #endif
@@ -404,6 +406,7 @@ void cleanup(show_status)
 	destroy_tls();
 #endif
 	destroy_timer();
+	close_unixsock_server();
 	destroy_fifo();
 	destroy_script_cb();
 #ifdef PKG_MALLOC
@@ -830,6 +833,13 @@ int main_loop()
 			LOG(L_ERR, "opening fifo server failed\n");
 			goto error;
 		}
+
+		     /* Initialize Unix domain socket server */
+		if (init_unixsock_server()<0) {
+			LOG(L_ERR, "Error while initializing Unix domain socket server\n");
+			goto error;
+		}
+
 		/* main process, receive loop */
 		process_no=0; /*main process number*/
 		pt[process_no].pid=getpid();
@@ -973,6 +983,12 @@ int main_loop()
 		goto error;
 	}
 
+	     /* Initialize Unix domain socket server */
+	if (init_unixsock_server()<0) {
+		LOG(L_ERR, "Error while initializing Unix domain socket server\n");
+		goto error;
+	}
+
 #ifdef USE_TCP
 	/* if we are using tcp we always need the timer */
 	if ((!tcp_disable)||(timer_list))
@@ -1130,7 +1146,7 @@ int main(int argc, char** argv)
 #ifdef STATS
 	"s:"
 #endif
-	"f:cp:m:b:l:n:N:rRvdDETVhw:t:u:g:P:i:";
+	"f:cp:m:b:l:n:N:rRvdDETVhw:t:u:g:P:i:x";
 	
 	while((c=getopt(argc,argv,options))!=-1){
 		switch(c){
@@ -1256,6 +1272,9 @@ int main(int argc, char** argv)
 			case 'i':
 					fifo=optarg;
 					break;
+		        case 'x':
+				        unixsock_name=optarg;
+					break;
 			case '?':
 					if (isprint(optopt))
 						fprintf(stderr, "Unknown option `-%c´.\n", optopt);

sr_module.h

@@ -65,6 +65,7 @@ typedef enum {
 #define PROC_TIMER    -1  /* Timer attendant process */
 #define PROC_FIFO     -2  /* FIFO attendant process */
 #define PROC_TCP_MAIN -4  /* TCP main process */
+#define PROC_UNIXSOCK -5  /* Unix domain socket server processes */
 
 #define MODULE_VERSION char *module_version=VERSION;