read.c revision 260684
1260684Skaiw/*- 2260684Skaiw * Copyright (c) 2007 Kai Wang 3260684Skaiw * Copyright (c) 2007 Tim Kientzle 4260684Skaiw * All rights reserved. 5260684Skaiw * 6260684Skaiw * Redistribution and use in source and binary forms, with or without 7260684Skaiw * modification, are permitted provided that the following conditions 8260684Skaiw * are met: 9260684Skaiw * 1. Redistributions of source code must retain the above copyright 10260684Skaiw * notice, this list of conditions and the following disclaimer 11260684Skaiw * in this position and unchanged. 12260684Skaiw * 2. Redistributions in binary form must reproduce the above copyright 13260684Skaiw * notice, this list of conditions and the following disclaimer in the 14260684Skaiw * documentation and/or other materials provided with the distribution. 15260684Skaiw * 16260684Skaiw * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR 17260684Skaiw * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18260684Skaiw * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19260684Skaiw * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT, 20260684Skaiw * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21260684Skaiw * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22260684Skaiw * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23260684Skaiw * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24260684Skaiw * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25260684Skaiw * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26260684Skaiw */ 27260684Skaiw 28260684Skaiw#include <sys/cdefs.h> 29260684Skaiw#include <sys/queue.h> 30260684Skaiw#include <sys/stat.h> 31260684Skaiw 32260684Skaiw#include <archive.h> 33260684Skaiw#include <archive_entry.h> 34260684Skaiw#include <assert.h> 35260684Skaiw#include <errno.h> 36260684Skaiw#include <libgen.h> 37260684Skaiw#include <stdio.h> 38260684Skaiw#include <string.h> 39260684Skaiw 40260684Skaiw#include "ar.h" 41260684Skaiw 42260684SkaiwELFTC_VCSID("$Id: read.c 2229 2011-11-27 13:25:37Z jkoshy $"); 43260684Skaiw 44260684Skaiw/* 45260684Skaiw * Handle read modes: 'x', 't' and 'p'. 46260684Skaiw */ 47260684Skaiwvoid 48260684Skaiwar_read_archive(struct bsdar *bsdar, int mode) 49260684Skaiw{ 50260684Skaiw FILE *out; 51260684Skaiw struct archive *a; 52260684Skaiw struct archive_entry *entry; 53260684Skaiw struct stat sb; 54260684Skaiw struct tm *tp; 55260684Skaiw const char *bname; 56260684Skaiw const char *name; 57260684Skaiw mode_t md; 58260684Skaiw size_t size; 59260684Skaiw time_t mtime; 60260684Skaiw uid_t uid; 61260684Skaiw gid_t gid; 62260684Skaiw char **av; 63260684Skaiw char buf[25]; 64260684Skaiw char find; 65260684Skaiw int i, flags, r; 66260684Skaiw 67260684Skaiw assert(mode == 'p' || mode == 't' || mode == 'x'); 68260684Skaiw 69260684Skaiw if ((a = archive_read_new()) == NULL) 70260684Skaiw bsdar_errc(bsdar, 0, "archive_read_new failed"); 71260684Skaiw archive_read_support_compression_none(a); 72260684Skaiw archive_read_support_format_ar(a); 73260684Skaiw AC(archive_read_open_file(a, bsdar->filename, DEF_BLKSZ)); 74260684Skaiw 75260684Skaiw out = bsdar->output; 76260684Skaiw 77260684Skaiw for (;;) { 78260684Skaiw r = archive_read_next_header(a, &entry); 79260684Skaiw if (r == ARCHIVE_WARN || r == ARCHIVE_RETRY || 80260684Skaiw r == ARCHIVE_FATAL) 81260684Skaiw bsdar_warnc(bsdar, 0, "%s", archive_error_string(a)); 82260684Skaiw if (r == ARCHIVE_EOF || r == ARCHIVE_FATAL) 83260684Skaiw break; 84260684Skaiw if (r == ARCHIVE_RETRY) { 85260684Skaiw bsdar_warnc(bsdar, 0, "Retrying..."); 86260684Skaiw continue; 87260684Skaiw } 88260684Skaiw 89260684Skaiw if (archive_format(a) == ARCHIVE_FORMAT_AR_BSD) 90260684Skaiw bsdar->options |= AR_BSD; 91260684Skaiw else 92260684Skaiw bsdar->options &= ~AR_BSD; 93260684Skaiw 94260684Skaiw name = archive_entry_pathname(entry); 95260684Skaiw 96260684Skaiw /* Skip pseudo members. */ 97260684Skaiw if (bsdar_is_pseudomember(bsdar, name)) 98260684Skaiw continue; 99260684Skaiw 100260684Skaiw if (bsdar->argc > 0) { 101260684Skaiw find = 0; 102260684Skaiw for(i = 0; i < bsdar->argc; i++) { 103260684Skaiw av = &bsdar->argv[i]; 104260684Skaiw if (*av == NULL) 105260684Skaiw continue; 106260684Skaiw if ((bname = basename(*av)) == NULL) 107260684Skaiw bsdar_errc(bsdar, errno, 108260684Skaiw "basename failed"); 109260684Skaiw if (strcmp(bname, name) != 0) 110260684Skaiw continue; 111260684Skaiw 112260684Skaiw *av = NULL; 113260684Skaiw find = 1; 114260684Skaiw break; 115260684Skaiw } 116260684Skaiw if (!find) 117260684Skaiw continue; 118260684Skaiw } 119260684Skaiw 120260684Skaiw if (mode == 't') { 121260684Skaiw if (bsdar->options & AR_V) { 122260684Skaiw md = archive_entry_mode(entry); 123260684Skaiw uid = archive_entry_uid(entry); 124260684Skaiw gid = archive_entry_gid(entry); 125260684Skaiw size = archive_entry_size(entry); 126260684Skaiw mtime = archive_entry_mtime(entry); 127260684Skaiw (void)fprintf(out, "%s %6d/%-6d %8ju ", 128260684Skaiw bsdar_strmode(md) + 1, uid, gid, 129260684Skaiw (uintmax_t)size); 130260684Skaiw tp = localtime(&mtime); 131260684Skaiw (void)strftime(buf, sizeof(buf), 132260684Skaiw "%b %e %H:%M %Y", tp); 133260684Skaiw (void)fprintf(out, "%s %s", buf, name); 134260684Skaiw } else 135260684Skaiw (void)fprintf(out, "%s", name); 136260684Skaiw r = archive_read_data_skip(a); 137260684Skaiw if (r == ARCHIVE_WARN || r == ARCHIVE_RETRY || 138260684Skaiw r == ARCHIVE_FATAL) { 139260684Skaiw (void)fprintf(out, "\n"); 140260684Skaiw bsdar_warnc(bsdar, 0, "%s", 141260684Skaiw archive_error_string(a)); 142260684Skaiw } 143260684Skaiw 144260684Skaiw if (r == ARCHIVE_FATAL) 145260684Skaiw break; 146260684Skaiw 147260684Skaiw (void)fprintf(out, "\n"); 148260684Skaiw } else { 149260684Skaiw /* mode == 'x' || mode = 'p' */ 150260684Skaiw if (mode == 'p') { 151260684Skaiw if (bsdar->options & AR_V) { 152260684Skaiw (void)fprintf(out, "\n<%s>\n\n", 153260684Skaiw name); 154260684Skaiw fflush(out); 155260684Skaiw } 156260684Skaiw r = archive_read_data_into_fd(a, fileno(out)); 157260684Skaiw } else { 158260684Skaiw /* mode == 'x' */ 159260684Skaiw if (stat(name, &sb) != 0) { 160260684Skaiw if (errno != ENOENT) { 161260684Skaiw bsdar_warnc(bsdar, 0, 162260684Skaiw "stat %s failed", 163260684Skaiw bsdar->filename); 164260684Skaiw continue; 165260684Skaiw } 166260684Skaiw } else { 167260684Skaiw /* stat success, file exist */ 168260684Skaiw if (bsdar->options & AR_CC) 169260684Skaiw continue; 170260684Skaiw if (bsdar->options & AR_U && 171260684Skaiw archive_entry_mtime(entry) <= 172260684Skaiw sb.st_mtime) 173260684Skaiw continue; 174260684Skaiw } 175260684Skaiw 176260684Skaiw if (bsdar->options & AR_V) 177260684Skaiw (void)fprintf(out, "x - %s\n", name); 178260684Skaiw flags = 0; 179260684Skaiw if (bsdar->options & AR_O) 180260684Skaiw flags |= ARCHIVE_EXTRACT_TIME; 181260684Skaiw 182260684Skaiw r = archive_read_extract(a, entry, flags); 183260684Skaiw } 184260684Skaiw 185260684Skaiw if (r) 186260684Skaiw bsdar_warnc(bsdar, 0, "%s", 187260684Skaiw archive_error_string(a)); 188260684Skaiw } 189260684Skaiw } 190260684Skaiw AC(archive_read_close(a)); 191260684Skaiw ACV(archive_read_finish(a)); 192260684Skaiw} 193