xref: /freebsd/usr.sbin/crunch/crunchgen/crunched_main.c (revision b0c70f811babc10c6aceb0fac16c2c8e02859ea5)
1de566360SJordan K. Hubbard /*
2de566360SJordan K. Hubbard  * Copyright (c) 1994 University of Maryland
3de566360SJordan K. Hubbard  * All Rights Reserved.
4de566360SJordan K. Hubbard  *
5de566360SJordan K. Hubbard  * Permission to use, copy, modify, distribute, and sell this software and its
6de566360SJordan K. Hubbard  * documentation for any purpose is hereby granted without fee, provided that
7de566360SJordan K. Hubbard  * the above copyright notice appear in all copies and that both that
8de566360SJordan K. Hubbard  * copyright notice and this permission notice appear in supporting
9de566360SJordan K. Hubbard  * documentation, and that the name of U.M. not be used in advertising or
10de566360SJordan K. Hubbard  * publicity pertaining to distribution of the software without specific,
11de566360SJordan K. Hubbard  * written prior permission.  U.M. makes no representations about the
12de566360SJordan K. Hubbard  * suitability of this software for any purpose.  It is provided "as is"
13de566360SJordan K. Hubbard  * without express or implied warranty.
14de566360SJordan K. Hubbard  *
15de566360SJordan K. Hubbard  * U.M. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
16de566360SJordan K. Hubbard  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL U.M.
17de566360SJordan K. Hubbard  * BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
18de566360SJordan K. Hubbard  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
19de566360SJordan K. Hubbard  * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
20de566360SJordan K. Hubbard  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
21de566360SJordan K. Hubbard  *
22de566360SJordan K. Hubbard  * Author: James da Silva, Systems Design and Analysis Group
23de566360SJordan K. Hubbard  *			   Computer Science Department
24de566360SJordan K. Hubbard  *			   University of Maryland at College Park
258f3548b2SGregory Neil Shapiro  *
268f3548b2SGregory Neil Shapiro  * $FreeBSD$
27de566360SJordan K. Hubbard  */
28de566360SJordan K. Hubbard /*
29de566360SJordan K. Hubbard  * crunched_main.c - main program for crunched binaries, it branches to a
30de566360SJordan K. Hubbard  * 	particular subprogram based on the value of argv[0].  Also included
31de566360SJordan K. Hubbard  *	is a little program invoked when the crunched binary is called via
32de566360SJordan K. Hubbard  *	its EXECNAME.  This one prints out the list of compiled-in binaries,
33de566360SJordan K. Hubbard  *	or calls one of them based on argv[1].   This allows the testing of
34de566360SJordan K. Hubbard  *	the crunched binary without creating all the links.
35de566360SJordan K. Hubbard  */
36de566360SJordan K. Hubbard #include <stdio.h>
37de566360SJordan K. Hubbard #include <string.h>
38de566360SJordan K. Hubbard 
39de566360SJordan K. Hubbard struct stub {
40de566360SJordan K. Hubbard     char *name;
41de566360SJordan K. Hubbard     int (*f)();
42de566360SJordan K. Hubbard };
43de566360SJordan K. Hubbard 
44de566360SJordan K. Hubbard extern struct stub entry_points[];
45de566360SJordan K. Hubbard 
468f3548b2SGregory Neil Shapiro int main(int argc, char **argv, char **envp)
47de566360SJordan K. Hubbard {
48de566360SJordan K. Hubbard     char *slash, *basename;
49de566360SJordan K. Hubbard     struct stub *ep;
50de566360SJordan K. Hubbard 
51de566360SJordan K. Hubbard     if(argv[0] == NULL || *argv[0] == '\0')
52de566360SJordan K. Hubbard 	crunched_usage();
53de566360SJordan K. Hubbard 
54de566360SJordan K. Hubbard     slash = strrchr(argv[0], '/');
55de566360SJordan K. Hubbard     basename = slash? slash+1 : argv[0];
56de566360SJordan K. Hubbard 
57de566360SJordan K. Hubbard     for(ep=entry_points; ep->name != NULL; ep++)
58de566360SJordan K. Hubbard 	if(!strcmp(basename, ep->name)) break;
59de566360SJordan K. Hubbard 
60de566360SJordan K. Hubbard     if(ep->name)
618f3548b2SGregory Neil Shapiro 	return ep->f(argc, argv, envp);
62de566360SJordan K. Hubbard     else {
63de566360SJordan K. Hubbard 	fprintf(stderr, "%s: %s not compiled in\n", EXECNAME, basename);
64de566360SJordan K. Hubbard 	crunched_usage();
65de566360SJordan K. Hubbard     }
66de566360SJordan K. Hubbard }
67de566360SJordan K. Hubbard 
68de566360SJordan K. Hubbard 
697d150b77SPoul-Henning Kamp int crunched_here(char *path)
707d150b77SPoul-Henning Kamp {
717d150b77SPoul-Henning Kamp     char *slash, *basename;
727d150b77SPoul-Henning Kamp     struct stub *ep;
737d150b77SPoul-Henning Kamp 
747d150b77SPoul-Henning Kamp     slash = strrchr(path, '/');
757d150b77SPoul-Henning Kamp     basename = slash? slash+1 : path;
767d150b77SPoul-Henning Kamp 
777d150b77SPoul-Henning Kamp     for(ep=entry_points; ep->name != NULL; ep++)
787d150b77SPoul-Henning Kamp 	if(!strcmp(basename, ep->name))
797d150b77SPoul-Henning Kamp 	    return 1;
807d150b77SPoul-Henning Kamp     return 0;
817d150b77SPoul-Henning Kamp }
827d150b77SPoul-Henning Kamp 
837d150b77SPoul-Henning Kamp 
84b0c70f81SGregory Neil Shapiro int crunched_main(int argc, char **argv, char **envp)
85de566360SJordan K. Hubbard {
86de566360SJordan K. Hubbard     struct stub *ep;
87de566360SJordan K. Hubbard     int columns, len;
88de566360SJordan K. Hubbard 
89de566360SJordan K. Hubbard     if(argc <= 1)
90de566360SJordan K. Hubbard 	crunched_usage();
91de566360SJordan K. Hubbard 
92b0c70f81SGregory Neil Shapiro     return main(--argc, ++argv, envp);
93de566360SJordan K. Hubbard }
94de566360SJordan K. Hubbard 
95de566360SJordan K. Hubbard 
96de566360SJordan K. Hubbard int crunched_usage()
97de566360SJordan K. Hubbard {
98de566360SJordan K. Hubbard     int columns, len;
99de566360SJordan K. Hubbard     struct stub *ep;
100de566360SJordan K. Hubbard 
101b17e90a9SPhilippe Charnier     fprintf(stderr, "usage: %s <prog> <args> ..., where <prog> is one of:\n",
102de566360SJordan K. Hubbard 	    EXECNAME);
103de566360SJordan K. Hubbard     columns = 0;
104de566360SJordan K. Hubbard     for(ep=entry_points; ep->name != NULL; ep++) {
105de566360SJordan K. Hubbard 	len = strlen(ep->name) + 1;
106de566360SJordan K. Hubbard 	if(columns+len < 80)
107de566360SJordan K. Hubbard 	    columns += len;
108de566360SJordan K. Hubbard 	else {
109de566360SJordan K. Hubbard 	    fprintf(stderr, "\n");
110de566360SJordan K. Hubbard 	    columns = len;
111de566360SJordan K. Hubbard 	}
112de566360SJordan K. Hubbard 	fprintf(stderr, " %s", ep->name);
113de566360SJordan K. Hubbard     }
114de566360SJordan K. Hubbard     fprintf(stderr, "\n");
115de566360SJordan K. Hubbard     exit(1);
116de566360SJordan K. Hubbard }
117de566360SJordan K. Hubbard 
118de566360SJordan K. Hubbard /* end of crunched_main.c */
119de566360SJordan K. Hubbard 
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