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/* This file is part of the Project Athena Zephyr Notification System.
* It contains source for asynchronous location functions.
*
* Created by: Marc Horowitz
*
* Copyright (c) 1990,1991 by the Massachusetts Institute of Technology.
* For copying and distribution information, see the file
* "mit-copyright.h".
*/
#include "internal.h"
Code_t ZRequestLocations(user, zald, kind, auth)
const char *user;
ZAsyncLocateData_t *zald;
ZNotice_Kind_t kind; /* UNSAFE, UNACKED, or ACKED */
Z_AuthProc auth;
{
int retval;
ZNotice_t notice;
if (ZGetFD() < 0)
if ((retval = ZOpenPort((unsigned short *)0)) != ZERR_NONE)
return (retval);
(void) memset((char *)¬ice, 0, sizeof(notice));
notice.z_kind = kind;
notice.z_port = __Zephyr_port;
notice.z_class = LOCATE_CLASS;
notice.z_class_inst = user;
notice.z_opcode = LOCATE_LOCATE;
notice.z_sender = 0;
notice.z_recipient = "";
notice.z_default_format = "";
notice.z_message_len = 0;
if ((retval = ZSendNotice(¬ice, auth)) != ZERR_NONE)
return(retval);
if ((zald->user = (char *) malloc(strlen(user)+1)) == NULL) {
return(ENOMEM);
}
if ((zald->version = (char *) malloc(strlen(notice.z_version)+1)) == NULL) {
free(zald->user);
return(ENOMEM);
}
zald->uid = notice.z_multiuid;
strcpy(zald->user,user);
strcpy(zald->version,notice.z_version);
return(ZERR_NONE);
}
Code_t ZParseLocations(notice,zald,nlocs,user)
ZNotice_t *notice;
ZAsyncLocateData_t *zald;
int *nlocs;
char **user;
{
char *ptr, *end;
int i;
ZFlushLocations(); /* This never fails (this function is part of the
library, so it is allowed to know this). */
/* non-matching protocol version numbers means the
server is probably an older version--must punt */
if (zald && strcmp(notice->z_version, zald->version))
return(ZERR_VERS);
if (notice->z_kind == SERVNAK)
return (ZERR_SERVNAK);
/* flag ACKs as special */
if (notice->z_kind == SERVACK &&
!strcmp(notice->z_opcode, LOCATE_LOCATE)) {
*nlocs = -1;
return(ZERR_NONE);
}
if (notice->z_kind != ACKED)
return (ZERR_INTERNAL);
end = notice->z_message+notice->z_message_len;
__locate_num = 0;
for (ptr=notice->z_message;ptr<end;ptr++)
if (!*ptr)
__locate_num++;
__locate_num /= 3;
if (__locate_num)
{
__locate_list = (ZLocations_t *)malloc((unsigned)__locate_num*
sizeof(ZLocations_t));
if (!__locate_list)
return (ENOMEM);
} else {
__locate_list = 0;
}
for (ptr=notice->z_message, i=0; i<__locate_num; i++) {
unsigned int len;
len = strlen (ptr) + 1;
__locate_list[i].host = (char *) malloc(len);
if (!__locate_list[i].host)
return (ENOMEM);
(void) strcpy(__locate_list[i].host, ptr);
ptr += len;
len = strlen (ptr) + 1;
__locate_list[i].time = (char *) malloc(len);
if (!__locate_list[i].time)
return (ENOMEM);
(void) strcpy(__locate_list[i].time, ptr);
ptr += len;
len = strlen (ptr) + 1;
__locate_list[i].tty = (char *) malloc(len);
if (!__locate_list[i].tty)
return (ENOMEM);
(void) strcpy(__locate_list[i].tty, ptr);
ptr += len;
}
__locate_next = 0;
*nlocs = __locate_num;
if (user) {
if (zald) {
if ((*user = (char *) malloc(strlen(zald->user)+1)) == NULL)
return(ENOMEM);
strcpy(*user,zald->user);
} else {
if ((*user = (char *) malloc(strlen(notice->z_class_inst)+1)) == NULL)
return(ENOMEM);
strcpy(*user,notice->z_class_inst);
}
}
return (ZERR_NONE);
}
int ZCompareALDPred(notice, zald)
ZNotice_t *notice;
void *zald;
{
return(ZCompareUID(&(notice->z_multiuid),
&(((ZAsyncLocateData_t *) zald)->uid)));
}
void ZFreeALD(zald)
ZAsyncLocateData_t *zald;
{
if (!zald) return;
if (zald->user) free(zald->user);
if (zald->version) free(zald->version);
(void) memset(zald, 0, sizeof(*zald));
}
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