safety

1 files changed, 86 insertions, 1 deletions

diff --git a/lib/ZLocations.c b/lib/ZLocations.c
index 76c80e5..e831eaf 100644
--- a/lib/ZLocations.c
+++ b/lib/ZLocations.c
@@ -1,5 +1,6 @@
 /* This file is part of the Project Athena Zephyr Notification System.
- * It contains source for the ZSetLocation function.
+ * It contains source for the ZSetLocation, ZUnsetLocation, ZHideLocation,
+ * and ZUnhideLocation functions.
  *
  *	Created by:	Robert French
  *
@@ -18,6 +19,8 @@
 
 #include <pwd.h>
 #include <sys/file.h>
+#include <sys/param.h>
+#include <netdb.h>
 
 uid_t getuid();
 
@@ -37,3 +40,85 @@ Code_t ZSetLocation()
 	return (Z_SendLocation(LOGIN_CLASS,quiet?LOGIN_QUIET_LOGIN:
 			       LOGIN_USER_LOGIN));
 }
+
+Code_t ZUnsetLocation()
+{
+	return (Z_SendLocation(LOGIN_CLASS,LOGIN_USER_LOGOUT));
+}
+
+Code_t ZHideLocation()
+{
+	return (Z_SendLocation(LOCATE_CLASS,LOCATE_HIDE));
+}
+
+Code_t ZUnhideLocation()
+{
+	return (Z_SendLocation(LOCATE_CLASS,LOCATE_UNHIDE));
+}
+
+Z_SendLocation(class,opcode)
+	char *class;
+	char *opcode;
+{
+	char *ttyname(),*ctime();
+
+	int retval;
+	long ourtime;
+	ZNotice_t notice,retnotice;
+	ZPacket_t buffer;
+	char *bptr[2],host[MAXHOSTNAMELEN];
+	struct hostent *hent;
+
+	notice.z_kind = ACKED;
+	notice.z_port = 0;
+	notice.z_class = class;
+	notice.z_class_inst = ZGetSender();
+	notice.z_opcode = opcode;
+	notice.z_sender = 0;
+	notice.z_recipient = "";
+
+	if (gethostname(host,MAXHOSTNAMELEN) < 0)
+		return (errno);
+
+	hent = gethostbyname(host);
+	if (!hent)
+		bptr[0] = "unknown";
+	else {
+		(void) strcpy(host,hent->h_name);
+		bptr[0] = host;
+	} 
+
+	ourtime = time((long *)0);
+	bptr[1] = ctime(&ourtime);
+	bptr[1][strlen(bptr[1])-1] = '\0';
+	
+	if ((retval = ZSendList(&notice,bptr,2,ZAUTH)) != ZERR_NONE)
+		return (retval);
+
+	if ((retval = ZIfNotice(buffer,sizeof buffer,&retnotice,(int *)0,
+			        ZCompareUIDPred,(char *)&notice.z_uid)) !=
+	    ZERR_NONE)
+		return (retval);
+
+	if (retnotice.z_kind == SERVNAK) {
+		if (!retnotice.z_message_len)
+			return (ZERR_SERVNAK);
+		if (!strcmp(retnotice.z_message,ZSRVACK_NOTSENT))
+			return (ZERR_AUTHFAIL);
+		if (!strcmp(retnotice.z_message,ZSRVACK_FAIL))
+			return (ZERR_LOGINFAIL);
+		return (ZERR_SERVNAK);
+	} 
+	
+	if (retnotice.z_kind != SERVACK)
+		return (ZERR_INTERNAL);
+
+	if (!retnotice.z_message_len)
+		return (ZERR_INTERNAL);
+
+	if (strcmp(retnotice.z_message,ZSRVACK_SENT) &&
+	    strcmp(retnotice.z_message,ZSRVACK_NOTSENT))
+		return (ZERR_INTERNAL);
+	
+	return (ZERR_NONE);
+}