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/* This file is part of the Project Athena Zephyr Notification System.
* It contains source for the ZRetrieveSubscriptions and
* ZRetrieveDefaultSubscriptions functions.
*
* Created by: Robert French
*
* $Id$
*
* Copyright (c) 1987,1988,1991 by the Massachusetts Institute of Technology.
* For copying and distribution information, see the file
* "mit-copyright.h".
*/
#include <internal.h>
#ifndef lint
static const char rcsid_ZRetrieveSubscriptions_c[] =
"$Id$";
#endif
static Code_t Z_RetSubs (register ZNotice_t *, int *, Z_AuthProc);
/* Need STDC definition when possible for unsigned short argument. */
Code_t
ZRetrieveSubscriptions(unsigned short port,
int *nsubs)
{
int retval;
ZNotice_t notice;
char asciiport[50];
if (!port) /* use default port */
port = __Zephyr_port;
retval = ZMakeAscii16(asciiport, sizeof(asciiport), ntohs(port));
if (retval != ZERR_NONE)
return (retval);
(void) memset((char *)¬ice, 0, sizeof(notice));
notice.z_message = asciiport;
notice.z_message_len = strlen(asciiport)+1;
notice.z_opcode = CLIENT_GIMMESUBS;
return(Z_RetSubs(¬ice, nsubs, ZAUTH));
}
Code_t
ZRetrieveDefaultSubscriptions(int *nsubs)
{
ZNotice_t notice;
(void) memset((char *)¬ice, 0, sizeof(notice));
notice.z_message = (char *) 0;
notice.z_message_len = 0;
notice.z_opcode = CLIENT_GIMMEDEFS;
return(Z_RetSubs(¬ice, nsubs, ZNOAUTH));
}
static Code_t
Z_RetSubs(register ZNotice_t *notice,
int *nsubs,
Z_AuthProc auth_routine)
{
register int i;
int retval,nrecv,gimmeack;
ZNotice_t retnotice;
char *ptr,*end,*ptr2;
ZSubscription_t *list = __subscriptions_list;
retval = ZFlushSubscriptions();
if (retval != ZERR_NONE && retval != ZERR_NOSUBSCRIPTIONS)
return (retval);
if (ZGetFD() < 0)
if ((retval = ZOpenPort((u_short *)0)) != ZERR_NONE)
return (retval);
notice->z_kind = ACKED;
notice->z_port = __Zephyr_port;
notice->z_class = ZEPHYR_CTL_CLASS;
notice->z_class_inst = ZEPHYR_CTL_CLIENT;
notice->z_sender = 0;
notice->z_recipient = "";
notice->z_default_format = "";
if ((retval = ZSendNotice(notice,auth_routine)) != ZERR_NONE)
return (retval);
nrecv = 0;
gimmeack = 0;
list = (ZSubscription_t *) 0;
while (!nrecv || !gimmeack) {
retval = Z_WaitForNotice (&retnotice, ZCompareMultiUIDPred,
¬ice->z_multiuid, SRV_TIMEOUT);
if (retval == ZERR_NONOTICE)
return ETIMEDOUT;
else if (retval != ZERR_NONE)
return retval;
if (retnotice.z_kind == SERVNAK) {
ZFreeNotice(&retnotice);
return (ZERR_SERVNAK);
}
/* non-matching protocol version numbers means the
server is probably an older version--must punt */
if (strcmp(notice->z_version,retnotice.z_version)) {
ZFreeNotice(&retnotice);
return(ZERR_VERS);
}
if (retnotice.z_kind == SERVACK &&
!strcmp(retnotice.z_opcode,notice->z_opcode)) {
ZFreeNotice(&retnotice);
gimmeack = 1;
continue;
}
if (retnotice.z_kind != ACKED) {
ZFreeNotice(&retnotice);
return (ZERR_INTERNAL);
}
nrecv++;
end = retnotice.z_message+retnotice.z_message_len;
__subscriptions_num = 0;
for (ptr=retnotice.z_message;ptr<end;ptr++)
if (!*ptr)
__subscriptions_num++;
__subscriptions_num = __subscriptions_num / 3;
list = (ZSubscription_t *)
malloc(__subscriptions_num * sizeof(ZSubscription_t));
if (__subscriptions_num && !list) {
ZFreeNotice(&retnotice);
return (ENOMEM);
}
ptr = retnotice.z_message;
for (i = 0; i < __subscriptions_num; i++) {
list[i].zsub_class = (char *)
malloc(strlen(ptr) + 1);
if (!list[i].zsub_class) {
ZFreeNotice(&retnotice);
return (ENOMEM);
}
strcpy(list[i].zsub_class, ptr);
ptr += strlen(ptr)+1;
list[i].zsub_classinst = (char *)
malloc(strlen(ptr) + 1);
if (!list[i].zsub_classinst) {
ZFreeNotice(&retnotice);
return (ENOMEM);
}
strcpy(list[i].zsub_classinst, ptr);
ptr += strlen(ptr)+1;
ptr2 = ptr;
list[i].zsub_recipient = (char *)
malloc(strlen(ptr2) + 2);
if (!list[i].zsub_recipient) {
ZFreeNotice(&retnotice);
return (ENOMEM);
}
if (*ptr2 == '@' || *ptr2 == 0) {
*list[i].zsub_recipient = '*';
strcpy(list[i].zsub_recipient + 1, ptr2);
} else {
strcpy(list[i].zsub_recipient, ptr2);
}
ptr += strlen(ptr)+1;
}
ZFreeNotice(&retnotice);
}
__subscriptions_list = list;
__subscriptions_next = 0;
*nsubs = __subscriptions_num;
return (ZERR_NONE);
}
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