Commit | Line | Data |
---|---|---|
bbd3193d | 1 | /*- |
477fcdeb KB |
2 | * Copyright (c) 1985, 1993 |
3 | * The Regents of the University of California. All rights reserved. | |
26b5a830 | 4 | * |
417f7a11 | 5 | * %sccs.include.redist.c% |
9a75fbc3 RG |
6 | */ |
7 | ||
8 | #ifndef lint | |
477fcdeb KB |
9 | static char copyright[] = |
10 | "@(#) Copyright (c) 1985, 1993\n\ | |
11 | The Regents of the University of California. All rights reserved.\n"; | |
26b5a830 | 12 | #endif /* not lint */ |
9a75fbc3 RG |
13 | |
14 | #ifndef lint | |
477fcdeb | 15 | static char sccsid[] = "@(#)timedc.c 8.1 (Berkeley) %G%"; |
26b5a830 | 16 | #endif /* not lint */ |
9a75fbc3 | 17 | |
bbd3193d KB |
18 | #ifdef sgi |
19 | #ident "$Revision: 1.6 $" | |
20 | #endif | |
21 | ||
9a75fbc3 | 22 | #include "timedc.h" |
bbd3193d | 23 | #include <strings.h> |
9a75fbc3 RG |
24 | #include <signal.h> |
25 | #include <ctype.h> | |
26 | #include <setjmp.h> | |
bbd3193d KB |
27 | #include <unistd.h> |
28 | #include <stdlib.h> | |
0bbdca37 | 29 | #include <syslog.h> |
9a75fbc3 | 30 | |
bbd3193d KB |
31 | int trace = 0; |
32 | FILE *fd = 0; | |
9a75fbc3 RG |
33 | int margc; |
34 | int fromatty; | |
35 | char *margv[20]; | |
36 | char cmdline[200]; | |
37 | jmp_buf toplevel; | |
bbd3193d | 38 | static struct cmd *getcmd __P((char *)); |
9a75fbc3 | 39 | |
bbd3193d | 40 | int |
9a75fbc3 | 41 | main(argc, argv) |
bbd3193d | 42 | int argc; |
9a75fbc3 RG |
43 | char *argv[]; |
44 | { | |
45 | register struct cmd *c; | |
46 | ||
bad1eddf EA |
47 | openlog("timedc", LOG_ODELAY, LOG_AUTH); |
48 | ||
9a75fbc3 RG |
49 | /* |
50 | * security dictates! | |
51 | */ | |
52 | if (priv_resources() < 0) { | |
5c7564a9 | 53 | fprintf(stderr, "Could not get privileged resources\n"); |
9a75fbc3 RG |
54 | exit(1); |
55 | } | |
56 | (void) setuid(getuid()); | |
57 | ||
58 | if (--argc > 0) { | |
59 | c = getcmd(*++argv); | |
60 | if (c == (struct cmd *)-1) { | |
61 | printf("?Ambiguous command\n"); | |
62 | exit(1); | |
63 | } | |
64 | if (c == 0) { | |
65 | printf("?Invalid command\n"); | |
66 | exit(1); | |
67 | } | |
99ab2e2c JB |
68 | if (c->c_priv && getuid()) { |
69 | printf("?Privileged command\n"); | |
70 | exit(1); | |
71 | } | |
9a75fbc3 RG |
72 | (*c->c_handler)(argc, argv); |
73 | exit(0); | |
74 | } | |
9a75fbc3 | 75 | |
bbd3193d KB |
76 | fromatty = isatty(fileno(stdin)); |
77 | if (setjmp(toplevel)) | |
9a75fbc3 | 78 | putchar('\n'); |
bbd3193d | 79 | (void) signal(SIGINT, intr); |
9a75fbc3 RG |
80 | for (;;) { |
81 | if (fromatty) { | |
82 | printf("timedc> "); | |
83 | (void) fflush(stdout); | |
84 | } | |
a0014217 | 85 | if (fgets(cmdline, sizeof(cmdline), stdin) == 0) |
9a75fbc3 RG |
86 | quit(); |
87 | if (cmdline[0] == 0) | |
88 | break; | |
89 | makeargv(); | |
bbd3193d KB |
90 | if (margv[0] == 0) |
91 | continue; | |
9a75fbc3 RG |
92 | c = getcmd(margv[0]); |
93 | if (c == (struct cmd *)-1) { | |
94 | printf("?Ambiguous command\n"); | |
95 | continue; | |
96 | } | |
97 | if (c == 0) { | |
98 | printf("?Invalid command\n"); | |
99 | continue; | |
100 | } | |
101 | if (c->c_priv && getuid()) { | |
102 | printf("?Privileged command\n"); | |
103 | continue; | |
104 | } | |
105 | (*c->c_handler)(margc, margv); | |
106 | } | |
bbd3193d KB |
107 | return 0; |
108 | } | |
109 | ||
110 | void | |
111 | intr(signo) | |
112 | int signo; | |
113 | { | |
114 | if (!fromatty) | |
115 | exit(0); | |
116 | longjmp(toplevel, 1); | |
9a75fbc3 RG |
117 | } |
118 | ||
bbd3193d KB |
119 | |
120 | static struct cmd * | |
9a75fbc3 | 121 | getcmd(name) |
bbd3193d | 122 | char *name; |
9a75fbc3 RG |
123 | { |
124 | register char *p, *q; | |
125 | register struct cmd *c, *found; | |
126 | register int nmatches, longest; | |
85a4432a | 127 | extern int NCMDS; |
9a75fbc3 RG |
128 | |
129 | longest = 0; | |
130 | nmatches = 0; | |
131 | found = 0; | |
85a4432a JB |
132 | for (c = cmdtab; c < &cmdtab[NCMDS]; c++) { |
133 | p = c->c_name; | |
9a75fbc3 RG |
134 | for (q = name; *q == *p++; q++) |
135 | if (*q == 0) /* exact match? */ | |
136 | return(c); | |
137 | if (!*q) { /* the name was a prefix */ | |
138 | if (q - name > longest) { | |
139 | longest = q - name; | |
140 | nmatches = 1; | |
141 | found = c; | |
142 | } else if (q - name == longest) | |
143 | nmatches++; | |
144 | } | |
145 | } | |
146 | if (nmatches > 1) | |
147 | return((struct cmd *)-1); | |
148 | return(found); | |
149 | } | |
150 | ||
151 | /* | |
152 | * Slice a string up into argc/argv. | |
153 | */ | |
bbd3193d | 154 | void |
9a75fbc3 RG |
155 | makeargv() |
156 | { | |
157 | register char *cp; | |
158 | register char **argp = margv; | |
159 | ||
160 | margc = 0; | |
161 | for (cp = cmdline; *cp;) { | |
162 | while (isspace(*cp)) | |
163 | cp++; | |
164 | if (*cp == '\0') | |
165 | break; | |
166 | *argp++ = cp; | |
167 | margc += 1; | |
168 | while (*cp != '\0' && !isspace(*cp)) | |
169 | cp++; | |
170 | if (*cp == '\0') | |
171 | break; | |
172 | *cp++ = '\0'; | |
173 | } | |
174 | *argp++ = 0; | |
175 | } | |
176 | ||
177 | #define HELPINDENT (sizeof ("directory")) | |
178 | ||
179 | /* | |
180 | * Help command. | |
181 | */ | |
bbd3193d | 182 | void |
9a75fbc3 RG |
183 | help(argc, argv) |
184 | int argc; | |
185 | char *argv[]; | |
186 | { | |
187 | register struct cmd *c; | |
188 | ||
189 | if (argc == 1) { | |
190 | register int i, j, w; | |
191 | int columns, width = 0, lines; | |
192 | extern int NCMDS; | |
193 | ||
194 | printf("Commands may be abbreviated. Commands are:\n\n"); | |
195 | for (c = cmdtab; c < &cmdtab[NCMDS]; c++) { | |
196 | int len = strlen(c->c_name); | |
197 | ||
198 | if (len > width) | |
199 | width = len; | |
200 | } | |
201 | width = (width + 8) &~ 7; | |
202 | columns = 80 / width; | |
203 | if (columns == 0) | |
204 | columns = 1; | |
205 | lines = (NCMDS + columns - 1) / columns; | |
206 | for (i = 0; i < lines; i++) { | |
207 | for (j = 0; j < columns; j++) { | |
208 | c = cmdtab + j * lines + i; | |
209 | printf("%s", c->c_name); | |
210 | if (c + lines >= &cmdtab[NCMDS]) { | |
211 | printf("\n"); | |
212 | break; | |
213 | } | |
214 | w = strlen(c->c_name); | |
215 | while (w < width) { | |
216 | w = (w + 8) &~ 7; | |
217 | putchar('\t'); | |
218 | } | |
219 | } | |
220 | } | |
221 | return; | |
222 | } | |
223 | while (--argc > 0) { | |
224 | register char *arg; | |
225 | arg = *++argv; | |
226 | c = getcmd(arg); | |
227 | if (c == (struct cmd *)-1) | |
228 | printf("?Ambiguous help command %s\n", arg); | |
229 | else if (c == (struct cmd *)0) | |
230 | printf("?Invalid help command %s\n", arg); | |
231 | else | |
bbd3193d | 232 | printf("%-*s\t%s\n", (int)HELPINDENT, |
9a75fbc3 RG |
233 | c->c_name, c->c_help); |
234 | } | |
235 | } |