*
* Usage: fortuned -h give all info
*
- * $Id: FortuneServer.c,v 1.1 2002/08/18 10:34:10 piccardi Exp $
+ * $Id: FortuneServer.c,v 1.5 2002/12/03 11:06:05 piccardi Exp $
*
****************************************************************/
/*
#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 n = 0;
- FILE *fortunefile;
- char *fortunefilename = "/usr/share/misc/fortune/fortune.it";
- char *fifoname = "/tmp/fortune.fifo";
+ int i, n = 0;
+ char *fortunefilename = "/usr/share/games/fortunes/italia";
char **fortune;
char line[80];
int fifo_server, fifo_client;
* Input section: decode parameters passed in the calling
* Use getopt function
*/
- int i;
- opterr = 0; /* don't want writing to stderr */
+ opterr = 0; /* don't want writing to stderr */
while ( (i = getopt(argc, argv, "hn:f:")) != -1) {
switch (i) {
/*
n = strtol(optarg, NULL, 10);
fortune = (char **) calloc(sizeof(*fortune), n);
break;
- case '?': /* unrecognized options */
+ case '?': /* unrecognized options */
printf("Unrecognized options -%c\n",optopt);
usage();
- default: /* should not reached */
+ default: /* should not reached */
usage();
}
}
* Main code beginning
*
* ***********************************************************/
- if (n==0) { /* if no pool depth exit */
- usage(); /* print usage info */
- }
- i = FortuneParse(fortunefilename, fortune, n);
- for (n=0; n<i; n++) debug("%s", fortune[n]);
+ 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)) {
+ if (mkfifo(fifoname, 0622)) { /* create well known fifo if does't exist */
if (errno!=EEXIST) {
perror("Cannot create well known fifo");
- exit(-1);
+ exit(1);
}
}
+ /* 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) {
- fifo_server = open(fifoname, O_RDONLY);
- if (fifo_server < 0) {
- perror("Cannot open well known fifo");
- exit(-1);
+ nread = read(fifo_server, line, 79); /* read request */
+ if (nread < 0) {
+ perror("Read Error");
+ exit(1);
}
- nread = read(fifo_server, line, 79);
- line[nread] = 0;
+ line[nread] = 0; /* terminate fifo name string */
debug("%s %d\n", line,nread);
- n = random() % i;
+ n = random() % i; /* select random value */
debug("fortune[%d]=%s\n", n, fortune[n]);
- fifo_client = open(line, O_WRONLY);
- nread = write(fifo_client, fortune[n], strlen(fortune[n])+1);
- close(fifo_client);
- close(fifo_server);
+ 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
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);
+}