1 /*- 2 * Copyright (c) 2011-2014, Mike Kazantsev 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR 15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 17 * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT, 18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26 #include "bsdcat_platform.h" 27 __FBSDID("$FreeBSD$"); 28 29 #include <stdio.h> 30 #ifdef HAVE_STDLIB_H 31 #include <stdlib.h> 32 #endif 33 #ifdef HAVE_UNISTD_H 34 #include <unistd.h> 35 #endif 36 #ifdef HAVE_STRING_H 37 #include <string.h> 38 #endif 39 40 #include "bsdcat.h" 41 #include "err.h" 42 43 #define BYTES_PER_BLOCK (20*512) 44 45 struct archive *a; 46 struct archive_entry *ae; 47 char *bsdcat_current_path; 48 int exit_status = 0; 49 50 51 void 52 usage(FILE *stream, int eval) 53 { 54 const char *p; 55 p = lafe_getprogname(); 56 fprintf(stream, 57 "Usage: %s [-h] [--help] [--version] [--] [filenames...]\n", p); 58 exit(eval); 59 } 60 61 static void 62 version(void) 63 { 64 printf("bsdcat %s - %s\n", 65 BSDCAT_VERSION_STRING, 66 archive_version_details()); 67 exit(0); 68 } 69 70 void 71 bsdcat_next() 72 { 73 a = archive_read_new(); 74 archive_read_support_filter_all(a); 75 archive_read_support_format_empty(a); 76 archive_read_support_format_raw(a); 77 } 78 79 void 80 bsdcat_print_error(void) 81 { 82 lafe_warnc(0, "%s: %s", 83 bsdcat_current_path, archive_error_string(a)); 84 exit_status = 1; 85 } 86 87 void 88 bsdcat_read_to_stdout(char* filename) 89 { 90 int r; 91 92 if (archive_read_open_filename(a, filename, BYTES_PER_BLOCK) 93 != ARCHIVE_OK) 94 bsdcat_print_error(); 95 else if (r = archive_read_next_header(a, &ae), 96 r != ARCHIVE_OK && r != ARCHIVE_EOF) 97 bsdcat_print_error(); 98 else if (r == ARCHIVE_EOF) 99 /* for empty payloads don't try and read data */ 100 ; 101 else if (archive_read_data_into_fd(a, 1) != ARCHIVE_OK) 102 bsdcat_print_error(); 103 if (archive_read_free(a) != ARCHIVE_OK) 104 bsdcat_print_error(); 105 } 106 107 int 108 main(int argc, char **argv) 109 { 110 struct bsdcat *bsdcat, bsdcat_storage; 111 int c; 112 113 bsdcat = &bsdcat_storage; 114 memset(bsdcat, 0, sizeof(*bsdcat)); 115 116 lafe_setprogname(*argv, "bsdcat"); 117 118 bsdcat->argv = argv; 119 bsdcat->argc = argc; 120 121 while ((c = bsdcat_getopt(bsdcat)) != -1) { 122 switch (c) { 123 case 'h': 124 usage(stdout, 0); 125 break; 126 case OPTION_VERSION: 127 version(); 128 break; 129 default: 130 usage(stderr, 1); 131 } 132 } 133 134 bsdcat_next(); 135 if (*bsdcat->argv == NULL) { 136 bsdcat_current_path = "<stdin>"; 137 bsdcat_read_to_stdout(NULL); 138 } else 139 while (*bsdcat->argv) { 140 bsdcat_current_path = *bsdcat->argv++; 141 bsdcat_read_to_stdout(bsdcat_current_path); 142 bsdcat_next(); 143 } 144 145 exit(exit_status); 146 } 147