* $Author$
* $Header$
*
- * Copyright (C) 1987 by the Massachusetts Institute of Technology
+ * Copyright (C) 1987, 1989, 1990 by the Massachusetts Institute of
+ * Technology
+ * For copying and distribution information, please see the file
+ * <mit-copyright.h>.
*
* This routine is part of the client library. It handles
- * creating a connection to the sms server.
+ * the protocol operations: invoking an update and getting the
+ * MR message of the day.
*/
#ifndef lint
static char *rcsid_sms_do_update_c = "$Header$";
#endif lint
-#include "sms_private.h"
+#include <mit-copyright.h>
+#include <strings.h>
+#include "mr_private.h"
-int sms_do_update()
+
+/* Invoke a DCM update. */
+
+int mr_do_update()
{
int status;
- sms_params param_st;
- struct sms_params *params = NULL;
- struct sms_params *reply = NULL;
+ mr_params param_st;
+ struct mr_params *params = NULL;
+ struct mr_params *reply = NULL;
CHECK_CONNECTED;
params = ¶m_st;
- params->sms_procno = SMS_DO_UPDATE;
- params->sms_argc = 0;
- params->sms_argl = NULL;
- params->sms_argv = NULL;
+ params->mr_version_no = sending_version_no;
+ params->mr_procno = MR_DO_UPDATE;
+ params->mr_argc = 0;
+ params->mr_argl = NULL;
+ params->mr_argv = NULL;
- if ((status = sms_do_call(params, &reply)) == 0)
- status = reply->sms_status;
+ if ((status = mr_do_call(params, &reply)) == 0)
+ status = reply->mr_status;
- sms_destroy_reply(reply);
+ mr_destroy_reply(reply);
return status;
}
-/*
- * Local Variables:
- * mode: c
- * c-indent-level: 4
- * c-continued-statement-offset: 4
- * c-brace-offset: -4
- * c-argdecl-indent: 4
- * c-label-offset: -4
- * End:
+
+/* Get the MR motd. This returns an MR status, and motd will either
+ * point to NULL or the motd in a static buffer.
+ */
+
+int mr_motd(motd)
+char **motd;
+{
+ int status;
+ mr_params param_st;
+ struct mr_params *params = NULL;
+ struct mr_params *reply = NULL;
+ static char buffer[1024];
+
+ *motd = NULL;
+ CHECK_CONNECTED;
+ params = ¶m_st;
+ params->mr_version_no = sending_version_no;
+ params->mr_procno = MR_MOTD;
+ params->mr_argc = 0;
+ params->mr_argl = NULL;
+ params->mr_argv = NULL;
+
+ if ((status = mr_do_call(params, &reply)))
+ goto punt;
+
+ while ((status = reply->mr_status) == MR_MORE_DATA) {
+ if (reply->mr_argc > 0) {
+ strncpy(buffer, reply->mr_argv[0], sizeof(buffer));
+ *motd = buffer;
+ }
+ mr_destroy_reply(reply);
+ reply = NULL;
+
+ initialize_operation(_mr_recv_op, mr_start_recv, &reply,
+ (int (*)())NULL);
+ queue_operation(_mr_conn, CON_INPUT, _mr_recv_op);
+
+ mr_complete_operation(_mr_recv_op);
+ if (OP_STATUS(_mr_recv_op) != OP_COMPLETE) {
+ mr_disconnect();
+ status = MR_ABORTED;
+ return(status);
+ }
+ }
+ punt:
+ mr_destroy_reply(reply);
+ /* for backwards compatability */
+ if (status == MR_UNKNOWN_PROC)
+ return(0);
+ else
+ return(status);
+}
+
+
+/* Tell the library to take care of another input source while it is
+ * processing a query. For instance, an X toolkit application would
+ * do something like
+ * mr_set_alternate_input(ConnectionNumber(XtDisplay(widget)), doxinput);
+ * where doxinput is defined as:
+ * doxinput() {
+ * extern Widget toplevel;
+ * XEvent event;
+ * while (XPending(XtDisplay(toplevel))) {
+ * XNextEvent(XtDisplay(toplevel), &event);
+ * XtDispatchEvent(&event);
+ * }
+ * XFlush(XtDisplay(toplevel));
+ * }
+ */
+
+static int mr_alternate_input = 0;
+static int (*mr_alternate_handler)();
+
+int mr_set_alternate_input(fd, proc)
+int fd;
+int (*proc)();
+{
+ if (mr_alternate_input != 0)
+ return(MR_ALREADY_CONNECTED);
+ mr_alternate_input = fd;
+ mr_alternate_handler = proc;
+ return(MR_SUCCESS);
+}
+
+
+/* This is used by the parts of the library that must wait for GDB. It
+ * handles alternate input streams (such as X) as well.
*/
+
+mr_complete_operation(op)
+OPERATION op;
+{
+ long infd, outfd, exfd;
+ int rc;
+
+ gdb_progress(); /* try for an immediate completion */
+
+ if (mr_alternate_input == 0)
+ return(complete_operation(op));
+
+ infd = (1<<mr_alternate_input);
+ outfd = exfd = 0;
+
+ while(op->status != OP_COMPLETE && op->status != OP_CANCELLED) {
+ rc = con_select(mr_alternate_input, (fd_set *)&infd, (fd_set *)&outfd,
+ (fd_set *)&exfd, (struct timeval *)NULL);
+ if (rc > 0 && mr_alternate_handler) {
+ (*mr_alternate_handler)();
+ }
+ }
+ return(op->status);
+}
+