1 | /* $Id: mr_ops.c,v 1.17 1999-12-30 17:29:24 danw Exp $ |
---|
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: /afs/.athena.mit.edu/astaff/project/moiradev/repository/moira/lib/mr_ops.c,v 1.17 1999-12-30 17:29:24 danw Exp $"); |
---|
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(¶ms, &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(¶ms, &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(¶ms, &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 | } |
---|