X-Git-Url: https://gapil.gnulinux.it/gitweb/?a=blobdiff_plain;ds=sidebyside;f=sources%2FFortuneServer.c;fp=sources%2FFortuneServer.c;h=c1c11462e81065e8d6c81fba04aef4ce35641310;hb=b1ead1b930038e4f7cd6ee7f737d7ee4699a068c;hp=0000000000000000000000000000000000000000;hpb=d12bc3e1e4b3ee762036d1c226c3b2ba1a720fb9;p=gapil.git

diff --git a/sources/FortuneServer.c b/sources/FortuneServer.c
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+/* FortuneServer.c
+ * 
+ * Copyright (C) 2002 Simone Piccardi
+ * 
+ * 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; either version 2 of the License, or (at
+ * your option) any later version.
+ * 
+ * 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.
+ */
+/****************************************************************
+ *
+ * Program fortuned 
+ * Fortune server
+ *
+ * Author: Simone Piccardi
+ * Aug. 2002
+ *
+ * Usage: fortuned -h give all info
+ *
+ * $Id: FortuneServer.c,v 1.8 2003/05/02 09:55:13 piccardi Exp $
+ *
+ ****************************************************************/
+/* 
+ * Include needed headers
+ */
+#include <sys/types.h>   /* predefined types */
+#include <sys/stat.h>    /*  */
+#include <unistd.h>      /* include unix standard library */
+#include <stdio.h>       /* include standard I/O library */
+#include <stdlib.h>	 /* standard library */
+#include <string.h>	 /* ANSI C standard string */
+#include <errno.h>	 /* errorstring */
+#include <signal.h>	 /* signals */
+#include <fcntl.h>	 /*  */
+
+#include "macros.h"
+#include "Gapil.h"
+
+/* Subroutines declaration */
+void usage(void);
+void HandSIGTERM(int signo);
+int FortuneParse(char *file, char **fortune, int n);
+
+/* name of well known fifo */
+char *fifoname = "/tmp/fortune.fifo";
+int main(int argc, char *argv[])
+{
+/* Variables definition */
+    int i, n = 0;
+    char *fortunefilename = "/usr/share/games/fortunes/linux";
+    char **fortune;
+    char line[80];
+    int fifo_server, fifo_client;
+    int nread;
+    /*
+     * Input section: decode parameters passed in the calling 
+     * Use getopt function
+     */
+    opterr = 0;	                             /* don't want writing to stderr */
+    while ( (i = getopt(argc, argv, "hn:f:")) != -1) {
+	switch (i) {
+	/* 
+	 * Handling options 
+	 */ 
+	case 'h':  
+	    printf("Wrong -h option use\n");
+	    usage();
+	    return(0);
+	    break;
+	case 'f':
+	    fortunefilename = optarg;
+	    break;
+	case 'n':
+	    n = strtol(optarg, NULL, 10);
+	    fortune = (char **) calloc(sizeof(*fortune), n);
+	    break;
+	case '?':                                    /* unrecognized options */
+	    printf("Unrecognized options -%c\n",optopt);
+	    usage();
+	default:                                       /* should not reached */
+	    usage();
+	}
+    }
+    /* ***********************************************************
+     * 
+     *		 Options processing completed
+     *
+     *		      Main code beginning
+     * 
+     * ***********************************************************/
+    if (n==0) usage();          /* if no pool depth exit printing usage info */
+    Signal(SIGTERM, HandSIGTERM);            /* set handlers for termination */
+    Signal(SIGINT, HandSIGTERM);
+    Signal(SIGQUIT, HandSIGTERM);
+    i = FortuneParse(fortunefilename, fortune, n);          /* parse phrases */
+    for (n=0; n<i; n++) debug("%s%%\n", fortune[n]);
+    /* 
+     * Comunication section 
+     */
+    if (mkfifo(fifoname, 0622)) {  /* create well known fifo if does't exist */
+	if (errno!=EEXIST) {
+	    perror("Cannot create well known fifo");
+	    exit(1);
+	}
+    }
+    daemon(0, 0);
+    /* open fifo two times to avoid EOF */
+    fifo_server = open(fifoname, O_RDONLY);
+    if (fifo_server < 0) {
+	perror("Cannot open read only well known fifo");
+	exit(1);
+    }
+    if (open(fifoname, O_WRONLY) < 0) {
+	perror("Cannot open write only well known fifo");
+	exit(1);
+    }
+    /* Main body: loop over requests */
+    while (1) {
+	nread = read(fifo_server, line, 79);                 /* read request */
+	if (nread < 0) {
+	    perror("Read Error");
+	    exit(1);
+	}
+	line[nread] = 0;                       /* terminate fifo name string */
+	debug("%s %d\n", line,nread);
+	n = random() % i;                             /* select random value */
+	debug("fortune[%d]=%s\n", n, fortune[n]);
+	fifo_client = open(line, O_WRONLY);              /* open client fifo */
+	if (fifo_client < 0) {
+	    debug("Client fifo is %s\n", line);
+	    perror("Cannot open");
+	    exit(1);
+	}
+	nread = write(fifo_client,                           /* write phrase */
+		      fortune[n], strlen(fortune[n])+1);
+	close(fifo_client);                             /* close client fifo */
+    }
+    debug("Exiting for unknown reasons\n");
+}
+/*
+ * routine to print usage info and exit
+ */
+void usage(void) {
+    printf("Elementary fortune server\n");
+    printf("Usage:\n");
+    printf("  fortuned [-h] [-f] -n XXX \n");
+    printf("  -h   print this help\n");
+    printf("  -f filename   set file for fortunes\n");
+    printf("  -n XXX        set pool depth\n");
+    exit(1);
+}
+/*
+ * Signal Handler to manage termination
+ */
+void HandSIGTERM(int signo) {
+    debug("Terminated by %s\n", strsignal(signo));
+    unlink(fifoname);
+    exit(0);
+}