*
* Usage: fortuned -h give all info
*
- * $Id: FortuneServer.c,v 1.2 2002/08/18 14:38:04 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 i, n = 0;
- char *fortunefilename = "/usr/share/games/fortunes/kids";
- char *fifoname = "/tmp/fortune.fifo";
+ char *fortunefilename = "/usr/share/games/fortunes/italia";
char **fortune;
char line[80];
int fifo_server, fifo_client;
*
* ***********************************************************/
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\n", fortune[n]);
+ 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);
+ 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); /* open well known fifo */
- if (fifo_server < 0) {
- perror("Cannot open well known fifo");
- exit(-1);
- }
nread = read(fifo_server, line, 79); /* read request */
- line[nread] = 0;
+ 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 well known fifo */
- close(fifo_server); /* close client fifo */
+ 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);
+}