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 120