Code style cleanup. (No functional changes)

[moira.git] / lib / mr_ops.c

diff --git a/lib/mr_ops.c b/lib/mr_ops.c
index 63d194fe485ce5623c866ada25c59ee3e9ef7740..4a67b302a303a38570d236b049380101271a9e74 100644 (file)
--- a/lib/mr_ops.c
+++ b/lib/mr_ops.c
@@ -3,47 +3,159 @@
  *     $Author$
  *     $Header$
  *
- *     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
+#endif
+
+#include <mit-copyright.h>
+#include <string.h>
+#include "mr_private.h"
+
 
-#include "sms_private.h"
+/* Invoke a DCM update. */
 
-int sms_do_update()
+int mr_do_update(void)
 {
-    int status;
-    sms_params param_st;
-    struct sms_params *params = NULL;
-    struct sms_params *reply = NULL;
-
-    CHECK_CONNECTED;
-    params = &param_st;
-    params->sms_procno = SMS_DO_UPDATE;
-    params->sms_argc = 0;
-    params->sms_argl = NULL;
-    params->sms_argv = NULL;
-       
-    if ((status = sms_do_call(params, &reply)) == 0)
-       status = reply->sms_status;
-       
-    sms_destroy_reply(reply);
+  int status;
+  mr_params param_st;
+  struct mr_params *params = NULL;
+  struct mr_params *reply = NULL;
+
+  CHECK_CONNECTED;
+  params = &param_st;
+  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 = mr_do_call(params, &reply)) == 0)
+    status = reply->mr_status;
+
+  mr_destroy_reply(reply);
+
+  return status;
+}
+
+
+/* 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(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 = &param_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, 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;
 }
 
-/*
- * 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:
+
+/* 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(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.
  */
+
+int mr_complete_operation(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, NULL);
+      if (rc > 0 && mr_alternate_handler)
+       (*mr_alternate_handler)();
+    }
+  return op->status;
+}
+