1/* 2 * All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 3. Neither the name of Apple nor the names of any contributors 13 * may be used to endorse or promote products derived from this software 14 * without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27*/ 28/* 29 * Portions Copyright 2006, Apple Computer, Inc. 30 * Christopher Ryan <ryanc@apple.com> 31*/ 32 33#include <stdio.h> 34#include <stdlib.h> 35#include <string.h> 36#include <sys/types.h> 37#include <limits.h> 38 39#include "config.h" 40#ifndef HAVE_ASPRINTF 41#include "asprintf.h" 42#endif 43#include "xar.h" 44#include "filetree.h" 45#include "arcmod.h" 46 47struct _script_context{ 48 int initted; 49}; 50 51#define SCRIPT_CONTEXT(x) ((struct _script_context*)(*x)) 52 53int32_t xar_script_in(xar_t x, xar_file_t f, xar_prop_t p, void **in, size_t *inlen, void **context) { 54 char *buf = *in; 55 xar_prop_t tmpp; 56 57 if(!SCRIPT_CONTEXT(context)){ 58 *context = calloc(1,sizeof(struct _script_context)); 59 } 60 61 if( SCRIPT_CONTEXT(context)->initted ) 62 return 0; 63 64 if( !xar_check_prop(x, "contents") ) 65 return 0; 66 67 /* Sanity check *inlen, which really shouldn't be more than a 68 * few kbytes... 69 */ 70 if( *inlen > INT_MAX ) 71 return 0; 72 73 /*We only run on the begining of the file, so once we init, we don't run again*/ 74 SCRIPT_CONTEXT(context)->initted = 1; 75 76 if( (*inlen > 2) && (buf[0] == '#') && (buf[1] == '!') ) { 77 char *exe; 78 int i; 79 80 exe = malloc(*inlen); 81 if( !exe ) 82 return -1; 83 memset(exe, 0, *inlen); 84 85 for(i = 2; (i < *inlen) && (buf[i] != '\0') && (buf[i] != '\n') && (buf[i] != ' '); ++i) { 86 exe[i-2] = buf[i]; 87 } 88 89 tmpp = xar_prop_pset(f, p, "contents", NULL); 90 if( tmpp ) { 91 xar_prop_pset(f, tmpp, "type", "script"); 92 xar_prop_pset(f, tmpp, "interpreter", exe); 93 } 94 free(exe); 95 } 96 return 0; 97} 98 99int32_t xar_script_done(xar_t x, xar_file_t f, xar_prop_t p, void **context) { 100 101 if(!SCRIPT_CONTEXT(context)){ 102 return 0; 103 } 104 105 if( *context ){ 106 free(*context); 107 *context = NULL; 108 } 109 110 return 0; 111} 112