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/*
*
*/
#include <errno.h>
#include <stdio.h>
#include <sys/types.h>
#include <strings.h>
#include <sys/stat.h>
#include <sys/file.h>
#include <mit-copyright.h>
#ifdef ZEPHYR
#include <zephyr/zephyr.h>
char *Zsignature = "Your friendly neighborhood post office.";
#endif ZEPHYR
void notify_recipient();
#define POP_MAILDIR "/usr/spool/pop"
char buffer[BUFSIZ];
char xtmpfile[512]; /* tmp file */
int newmail; /* fd for temp message */
int maildrop; /* file descriptor for drop */
extern int errno;
extern int sys_nerr;
extern char *sys_errlist[];
main (argc, argv)
int argc;
char **argv;
{
int status = 0;
int i = 1; /* argument counter */
if(get_message() < 0)
exit(1);
while (--argc > 0)
{
if(open_drop(argv[i]) < 0)
{
lseek(newmail, 0, L_SET);
if(new_message(maildrop, newmail) < 0)
status = 1;
if(close(maildrop) < 0)
{
status = 1;
sprintf(buffer, "%s: error on close", argv[i]);
error(buffer, errno);
}
notify_recipient(argv[i]);
}
else
status = 1;
++i;
}
close(newmail);
unlink(xtmpfile);
exit(status);
}
int
get_message()
{
int nchar;
sprintf(xtmpfile, "/tmp/tpop.%d", getpid());
if((newmail = open(xtmpfile, O_RDWR|O_CREAT, 0600)) == -1)
{
fprintf(stderr, "unable to open temporary file, \"%s\".\n", xtmpfile);
return(-1);
}
while(nchar = read(0, buffer, sizeof(buffer)))
write(newmail, buffer, nchar);
return(0);
}
int
open_drop(name)
char *name;
{
char dropfile[512];
sprintf(dropfile, "%s/%s", POP_MAILDIR, name);
if ((maildrop = open(dropfile, O_RDWR|O_CREAT,0600)) == -1)
{
fprintf(stderr, "unable to open \"%s\": %s.\n",
dropfile, (errno < sys_nerr) ? sys_errlist[errno] : "");
return(-1);
}
/* Lock the user's real mail drop */
if (flock(maildrop, LOCK_EX) == -1)
{
fprintf(stderr,
"unable to lock \"%s\" (service unavailable... the sequel): %s.\n",
dropfile, (errno < sys_nerr) ?
sys_errlist[errno] : "");
return(-1);
}
lseek(maildrop, 0, L_XTND);
return(0);
}
new_message(to, from)
int to, from;
{
int cc;
cc = time(0);
sprintf(buffer, "From popper %s\n", ctime(&cc));
write(to, buffer, strlen(buffer) * sizeof(char));
while(cc = read(from, buffer, sizeof(buffer)))
write(to, buffer, cc);
write(to, "\n", 1);
}
void
notify_recipient(name)
char *name;
{
char *message = "You have new mail";
#ifdef ZEPHYR
static int init = 0;
ZNotice_t notice; /* Zephyr notice */
int ret; /* return value, length */
if(init)
if ((ret = ZInitialize()) == ZERR_NONE)
init = 0;
bzero(¬ice, sizeof(notice));
notice.z_kind = UNSAFE;
notice.z_class = "message";
notice.z_class_inst = "pop";
notice.z_recipient = name;
zsend(¬ice, &message, 1, 1);
#endif ZEPHYR
}
#ifdef ZEPHYR
zsend(notice, items, nitems, auth)
ZNotice_t *notice;
char **items;
int nitems;
int auth;
{
int ret;
if ((ret = ZSendList(notice, items, nitems, auth ? ZAUTH:ZNOAUTH)) !=
ZERR_NONE)
{ /* syslog */
if(auth)
return(zsend(notice, items, nitems, 0));
else
return(-1);
}
}
#endif ZEPHYR
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