andersk Git - moira.git/blame_incremental

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Commit	Line	Data
	1	/* $Id$
	2	*
	3	* This routine is part of the client library. It handles
	4	* the protocol operations: invoking an update and getting the
	5	* Moira message of the day.
	6	*
	7	* Copyright (C) 1987-1998 by the Massachusetts Institute of Technology
	8	* For copying and distribution information, please see the file
	9	* <mit-copyright.h>.
	10	*/
	11
	12	#include <mit-copyright.h>
	13	#include <moira.h>
	14	#include "mr_private.h"
	15
	16	#include <errno.h>
	17	#include <stdio.h>
	18	#include <stdlib.h>
	19	#include <string.h>
	20
	21	RCSID("$Header$");
	22
	23	/* Invoke a DCM update. */
	24
	25	int mr_do_update(void)
	26	{
	27	int status;
	28	mr_params params, reply;
	29
	30	CHECK_CONNECTED;
	31	params.u.mr_procno = MR_DO_UPDATE;
	32	params.mr_argc = 0;
	33	params.mr_argl = NULL;
	34	params.mr_argv = NULL;
	35
	36	if ((status = mr_do_call(&params, &reply)) == MR_SUCCESS)
	37	status = reply.u.mr_status;
	38
	39	mr_destroy_reply(reply);
	40
	41	return status;
	42	}
	43
	44
	45	/* Get the Moira motd. This returns a Moira status, and motd will either
	46	* point to NULL or the motd in a static buffer.
	47	*/
	48
	49	int mr_motd(char **motd)
	50	{
	51	int status;
	52	mr_params params, reply;
	53	static char *buffer = NULL;
	54
	55	*motd = NULL;
	56	CHECK_CONNECTED;
	57	params.u.mr_procno = MR_MOTD;
	58	params.mr_argc = 0;
	59	params.mr_argl = NULL;
	60	params.mr_argv = NULL;
	61
	62	if ((status = mr_do_call(&params, &reply)))
	63	goto punt;
	64
	65	while ((status = reply.u.mr_status) == MR_MORE_DATA)
	66	{
	67	if (reply.mr_argc > 0)
	68	{
	69	buffer = realloc(buffer, reply.mr_argl[0] + 1);
	70	if (!buffer)
	71	{
	72	mr_disconnect();
	73	return ENOMEM;
	74	}
	75	strcpy(buffer, reply.mr_argv[0]);
	76	*motd = buffer;
	77	}
	78	mr_destroy_reply(reply);
	79	if (mr_receive(_mr_conn, &reply) != MR_SUCCESS)
	80	{
	81	mr_disconnect();
	82	return MR_ABORTED;
	83	}
	84	}
	85	punt:
	86	mr_destroy_reply(reply);
	87
	88	return status;
	89	}
	90
	91	/* Exchange query version info with the server. */
	92
	93	int mr_version(int version)
	94	{
	95	int status;
	96	mr_params params, reply;
	97	char vbuf[10], *arg;
	98
	99	CHECK_CONNECTED;
	100
	101	sprintf(vbuf, "%d", version);
	102	arg = strdup(vbuf);
	103	params.u.mr_procno = MR_SETVERSION;
	104	params.mr_argc = 1;
	105	params.mr_argl = NULL;
	106	params.mr_argv = &arg;
	107
	108	status = mr_do_call(&params, &reply);
	109	free(arg);
	110
	111	if (status == MR_SUCCESS)
	112	{
	113	status = reply.u.mr_status;
	114
	115	if (status == MR_VERSION_LOW && getenv("MOIRA_LOW_VERSION_WARNING"))
	116	fprintf(stderr, "Warning: This client is out of date.\n");
	117	}
	118	mr_destroy_reply(reply);
	119
	120	return status;
	121	}