[3445] in Athena Bugs
patch for hostinfo
daemon@ATHENA.MIT.EDU (John T Kohl)
Wed Oct 18 15:00:28 1989
Date: Wed, 18 Oct 89 15:00:07 EDT
From: John T Kohl <jtkohl@ATHENA.MIT.EDU>
To: bugs@ATHENA.MIT.EDU
I've seen several complaints that 'hostinfo' doesn't interpret the error
codes. Here's a simple patch to fix that:
*** /tmp/,RCSt1a19251 Wed Oct 18 14:58:59 1989
--- hostinfo.c Wed Oct 18 14:57:28 1989
***************
*** 55,60 ****
--- 55,61 ----
{
extern int getopt();
extern int optind;
+ extern int h_errno;
char hostname[LINE_LENGTH]; /* Name of desired host. */
struct hostent *host_entry = NULL; /* Host entry of it. */
***************
*** 96,103 ****
}
if (host_entry == NULL)
{
! printf("No such host.\n");
! exit(ERROR);
}
bcopy(host_entry->h_addr, &internet_address, host_entry->h_length);
if (h_flag) printf("%s\n", host_entry->h_name);
--- 97,127 ----
}
if (host_entry == NULL)
{
! switch (h_errno) {
! #ifdef ultrix
! /* it can return NULL, h_errno == 0 in some cases when
! there is no name */
! case 0:
! #endif
! case HOST_NOT_FOUND:
! printf("No such host '%s'.\n",hostname);
! exit(ERROR);
! break;
! default:
! case TRY_AGAIN:
! case NO_RECOVERY:
! printf("Cannot resolve name '%s' due to network difficulties.\n",
! hostname);
! exit(ERROR);
! break;
! case NO_ADDRESS:
! /* should look up MX record? */
! /* this error return appears if there is some entry for the
! requested name, but no A record (e.g. only an NS record) */
! printf("No address for '%s'.\n", hostname);
! exit(ERROR);
! break;
! }
}
bcopy(host_entry->h_addr, &internet_address, host_entry->h_length);
if (h_flag) printf("%s\n", host_entry->h_name);
