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/queue.h> 29260684Skaiw#include <sys/stat.h> 30260684Skaiw 31260684Skaiw#include <archive.h> 32260684Skaiw#include <archive_entry.h> 33260684Skaiw#include <assert.h> 34260684Skaiw#include <errno.h> 35260684Skaiw#include <libgen.h> 36260684Skaiw#include <stdio.h> 37260684Skaiw#include <string.h> 38260684Skaiw 39260684Skaiw#include "ar.h" 40260684Skaiw 41282911SemasteELFTC_VCSID("$Id: read.c 3180 2015-04-09 15:13:57Z emaste $"); 42260684Skaiw 43260684Skaiw/* 44260684Skaiw * Handle read modes: 'x', 't' and 'p'. 45260684Skaiw */ 46260684Skaiwvoid 47260684Skaiwar_read_archive(struct bsdar *bsdar, int mode) 48260684Skaiw{ 49260684Skaiw FILE *out; 50260684Skaiw struct archive *a; 51260684Skaiw struct archive_entry *entry; 52260684Skaiw struct stat sb; 53260684Skaiw struct tm *tp; 54260684Skaiw const char *bname; 55260684Skaiw const char *name; 56260684Skaiw mode_t md; 57260684Skaiw size_t size; 58260684Skaiw time_t mtime; 59260684Skaiw uid_t uid; 60260684Skaiw gid_t gid; 61260684Skaiw char **av; 62260684Skaiw char buf[25]; 63260684Skaiw char find; 64260684Skaiw int i, flags, r; 65260684Skaiw 66260684Skaiw assert(mode == 'p' || mode == 't' || mode == 'x'); 67260684Skaiw 68260684Skaiw if ((a = archive_read_new()) == NULL) 69260684Skaiw bsdar_errc(bsdar, 0, "archive_read_new failed"); 70260684Skaiw archive_read_support_format_ar(a); 71276077Semaste AC(archive_read_open_filename(a, bsdar->filename, DEF_BLKSZ)); 72260684Skaiw 73260684Skaiw out = bsdar->output; 74260684Skaiw 75260684Skaiw for (;;) { 76260684Skaiw r = archive_read_next_header(a, &entry); 77260684Skaiw if (r == ARCHIVE_WARN || r == ARCHIVE_RETRY || 78260684Skaiw r == ARCHIVE_FATAL) 79260684Skaiw bsdar_warnc(bsdar, 0, "%s", archive_error_string(a)); 80260684Skaiw if (r == ARCHIVE_EOF || r == ARCHIVE_FATAL) 81260684Skaiw break; 82260684Skaiw if (r == ARCHIVE_RETRY) { 83260684Skaiw bsdar_warnc(bsdar, 0, "Retrying..."); 84260684Skaiw continue; 85260684Skaiw } 86260684Skaiw 87260684Skaiw if (archive_format(a) == ARCHIVE_FORMAT_AR_BSD) 88260684Skaiw bsdar->options |= AR_BSD; 89260684Skaiw else 90260684Skaiw bsdar->options &= ~AR_BSD; 91260684Skaiw 92278898Semaste if ((name = archive_entry_pathname(entry)) == NULL) 93278898Semaste break; 94260684Skaiw 95260684Skaiw /* Skip pseudo members. */ 96260684Skaiw if (bsdar_is_pseudomember(bsdar, name)) 97260684Skaiw continue; 98260684Skaiw 99260684Skaiw if (bsdar->argc > 0) { 100260684Skaiw find = 0; 101260684Skaiw for(i = 0; i < bsdar->argc; i++) { 102260684Skaiw av = &bsdar->argv[i]; 103260684Skaiw if (*av == NULL) 104260684Skaiw continue; 105260684Skaiw if ((bname = basename(*av)) == NULL) 106260684Skaiw bsdar_errc(bsdar, errno, 107260684Skaiw "basename failed"); 108260684Skaiw if (strcmp(bname, name) != 0) 109260684Skaiw continue; 110260684Skaiw 111260684Skaiw *av = NULL; 112260684Skaiw find = 1; 113260684Skaiw break; 114260684Skaiw } 115260684Skaiw if (!find) 116260684Skaiw continue; 117260684Skaiw } 118260684Skaiw 119260684Skaiw if (mode == 't') { 120260684Skaiw if (bsdar->options & AR_V) { 121260684Skaiw md = archive_entry_mode(entry); 122260684Skaiw uid = archive_entry_uid(entry); 123260684Skaiw gid = archive_entry_gid(entry); 124260684Skaiw size = archive_entry_size(entry); 125260684Skaiw mtime = archive_entry_mtime(entry); 126260684Skaiw (void)fprintf(out, "%s %6d/%-6d %8ju ", 127260684Skaiw bsdar_strmode(md) + 1, uid, gid, 128260684Skaiw (uintmax_t)size); 129260684Skaiw tp = localtime(&mtime); 130260684Skaiw (void)strftime(buf, sizeof(buf), 131260684Skaiw "%b %e %H:%M %Y", tp); 132260684Skaiw (void)fprintf(out, "%s %s", buf, name); 133260684Skaiw } else 134260684Skaiw (void)fprintf(out, "%s", name); 135260684Skaiw r = archive_read_data_skip(a); 136260684Skaiw if (r == ARCHIVE_WARN || r == ARCHIVE_RETRY || 137260684Skaiw r == ARCHIVE_FATAL) { 138260684Skaiw (void)fprintf(out, "\n"); 139260684Skaiw bsdar_warnc(bsdar, 0, "%s", 140260684Skaiw archive_error_string(a)); 141260684Skaiw } 142260684Skaiw 143260684Skaiw if (r == ARCHIVE_FATAL) 144260684Skaiw break; 145260684Skaiw 146260684Skaiw (void)fprintf(out, "\n"); 147260684Skaiw } else { 148260684Skaiw /* mode == 'x' || mode = 'p' */ 149260684Skaiw if (mode == 'p') { 150260684Skaiw if (bsdar->options & AR_V) { 151260684Skaiw (void)fprintf(out, "\n<%s>\n\n", 152260684Skaiw name); 153260684Skaiw fflush(out); 154260684Skaiw } 155260684Skaiw r = archive_read_data_into_fd(a, fileno(out)); 156260684Skaiw } else { 157260684Skaiw /* mode == 'x' */ 158260684Skaiw if (stat(name, &sb) != 0) { 159260684Skaiw if (errno != ENOENT) { 160260684Skaiw bsdar_warnc(bsdar, 0, 161260684Skaiw "stat %s failed", 162260684Skaiw bsdar->filename); 163260684Skaiw continue; 164260684Skaiw } 165260684Skaiw } else { 166260684Skaiw /* stat success, file exist */ 167260684Skaiw if (bsdar->options & AR_CC) 168260684Skaiw continue; 169260684Skaiw if (bsdar->options & AR_U && 170260684Skaiw archive_entry_mtime(entry) <= 171260684Skaiw sb.st_mtime) 172260684Skaiw continue; 173260684Skaiw } 174260684Skaiw 175260684Skaiw if (bsdar->options & AR_V) 176260684Skaiw (void)fprintf(out, "x - %s\n", name); 177280917Semaste /* Disallow absolute paths. */ 178280917Semaste if (name[0] == '/') { 179280917Semaste bsdar_warnc(bsdar, 0, 180280917Semaste "Absolute path '%s'", name); 181280917Semaste continue; 182280917Semaste } 183280917Semaste /* Basic path security flags. */ 184282911Semaste flags = ARCHIVE_EXTRACT_SECURE_SYMLINKS | 185280917Semaste ARCHIVE_EXTRACT_SECURE_NODOTDOT; 186260684Skaiw if (bsdar->options & AR_O) 187260684Skaiw flags |= ARCHIVE_EXTRACT_TIME; 188260684Skaiw 189260684Skaiw r = archive_read_extract(a, entry, flags); 190260684Skaiw } 191260684Skaiw 192260684Skaiw if (r) 193260684Skaiw bsdar_warnc(bsdar, 0, "%s", 194260684Skaiw archive_error_string(a)); 195260684Skaiw } 196260684Skaiw } 197260684Skaiw AC(archive_read_close(a)); 198276077Semaste ACV(archive_read_free(a)); 199260684Skaiw} 200