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1.5 ! millert 1: /* $OpenBSD: cmds.c,v 1.4 1996/06/26 05:40:04 deraadt Exp $ */
1.2 deraadt 2: /* $NetBSD: cmds.c,v 1.4 1996/05/10 23:16:32 thorpej Exp $ */
1.1 deraadt 3:
4: /*-
5: * Copyright (c) 1980, 1992, 1993
6: * The Regents of the University of California. All rights reserved.
7: *
8: * Redistribution and use in source and binary forms, with or without
9: * modification, are permitted provided that the following conditions
10: * are met:
11: * 1. Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
13: * 2. Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
16: * 3. All advertising materials mentioning features or use of this software
17: * must display the following acknowledgement:
18: * This product includes software developed by the University of
19: * California, Berkeley and its contributors.
20: * 4. Neither the name of the University nor the names of its contributors
21: * may be used to endorse or promote products derived from this software
22: * without specific prior written permission.
23: *
24: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34: * SUCH DAMAGE.
35: */
36:
37: #ifndef lint
38: #if 0
39: static char sccsid[] = "@(#)cmds.c 8.2 (Berkeley) 4/29/95";
40: #endif
1.5 ! millert 41: static char rcsid[] = "$OpenBSD: cmds.c,v 1.4 1996/06/26 05:40:04 deraadt Exp $";
1.1 deraadt 42: #endif /* not lint */
43:
44: #include <stdlib.h>
45: #include <unistd.h>
46: #include <signal.h>
47: #include <ctype.h>
48: #include <string.h>
49: #include "systat.h"
50: #include "extern.h"
51:
52: void
53: command(cmd)
54: char *cmd;
55: {
56: register struct cmdtab *p;
57: register char *cp;
58: int interval, omask;
59:
60: omask = sigblock(sigmask(SIGALRM));
61: for (cp = cmd; *cp && !isspace(*cp); cp++)
62: ;
63: if (*cp)
64: *cp++ = '\0';
65: if (*cmd == '\0')
66: return;
67: for (; *cp && isspace(*cp); cp++)
68: ;
69: if (strcmp(cmd, "quit") == 0 || strcmp(cmd, "q") == 0)
70: die(0);
71: if (strcmp(cmd, "load") == 0) {
72: load();
73: goto done;
74: }
75: if (strcmp(cmd, "stop") == 0) {
76: alarm(0);
77: mvaddstr(CMDLINE, 0, "Refresh disabled.");
78: clrtoeol();
79: goto done;
80: }
81: if (strcmp(cmd, "help") == 0) {
82: int col, len;
83:
84: move(CMDLINE, col = 0);
85: for (p = cmdtab; p->c_name; p++) {
86: len = strlen(p->c_name);
87: if (col + len > COLS)
88: break;
89: addstr(p->c_name); col += len;
90: if (col + 1 < COLS)
91: addch(' ');
92: }
93: clrtoeol();
94: goto done;
95: }
96: interval = atoi(cmd);
97: if (interval <= 0 &&
98: (strcmp(cmd, "start") == 0 || strcmp(cmd, "interval") == 0)) {
99: interval = *cp ? atoi(cp) : naptime;
100: if (interval <= 0) {
101: error("%d: bad interval.", interval);
102: goto done;
103: }
104: }
105: if (interval > 0) {
106: alarm(0);
107: naptime = interval;
108: display(0);
109: status();
110: goto done;
111: }
112: p = lookup(cmd);
113: if (p == (struct cmdtab *)-1) {
1.3 deraadt 114: error("%s: Ambiguous command.", cmd);
1.1 deraadt 115: goto done;
116: }
117: if (p) {
118: if (curcmd == p)
119: goto done;
120: alarm(0);
121: (*curcmd->c_close)(wnd);
122: wnd = (*p->c_open)();
123: if (wnd == 0) {
124: error("Couldn't open new display");
125: wnd = (*curcmd->c_open)();
126: if (wnd == 0) {
127: error("Couldn't change back to previous cmd");
128: exit(1);
129: }
130: p = curcmd;
131: }
132: if ((p->c_flags & CF_INIT) == 0) {
133: if ((*p->c_init)())
134: p->c_flags |= CF_INIT;
135: else
136: goto done;
137: }
138: curcmd = p;
139: labels();
140: display(0);
141: status();
142: goto done;
143: }
1.3 deraadt 144: if (curcmd->c_cmd == 0 || !(*curcmd->c_cmd)(cmd, cp))
145: error("%s: Unknown command.", cmd);
1.1 deraadt 146: done:
147: sigsetmask(omask);
148: }
149:
150: struct cmdtab *
151: lookup(name)
152: register char *name;
153: {
154: register char *p, *q;
155: register struct cmdtab *c, *found;
156: register int nmatches, longest;
157:
158: longest = 0;
159: nmatches = 0;
160: found = (struct cmdtab *) 0;
1.5 ! millert 161: for (c = cmdtab; (p = c->c_name); c++) {
1.1 deraadt 162: for (q = name; *q == *p++; q++)
163: if (*q == 0) /* exact match? */
164: return (c);
165: if (!*q) { /* the name was a prefix */
166: if (q - name > longest) {
167: longest = q - name;
168: nmatches = 1;
169: found = c;
170: } else if (q - name == longest)
171: nmatches++;
172: }
173: }
1.3 deraadt 174: if (nmatches > 1)
1.1 deraadt 175: return ((struct cmdtab *)-1);
176: return (found);
177: }
178:
179: void
180: status()
181: {
182:
183: error("Showing %s, refresh every %d seconds.",
184: curcmd->c_name, naptime);
185: }
186:
187: int
188: prefix(s1, s2)
189: register char *s1, *s2;
190: {
191:
192: while (*s1 == *s2) {
193: if (*s1 == '\0')
194: return (1);
195: s1++, s2++;
196: }
197: return (*s1 == '\0');
198: }