cpio.c revision 337351
1228753Smm/*- 2228753Smm * Copyright (c) 2003-2007 Tim Kientzle 3228753Smm * All rights reserved. 4228753Smm * 5228753Smm * Redistribution and use in source and binary forms, with or without 6228753Smm * modification, are permitted provided that the following conditions 7228753Smm * are met: 8228753Smm * 1. Redistributions of source code must retain the above copyright 9228753Smm * notice, this list of conditions and the following disclaimer 10228753Smm * in this position and unchanged. 11228753Smm * 2. Redistributions in binary form must reproduce the above copyright 12228753Smm * notice, this list of conditions and the following disclaimer in the 13228753Smm * documentation and/or other materials provided with the distribution. 14228753Smm * 15228753Smm * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR 16228753Smm * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17228753Smm * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18228753Smm * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT, 19228753Smm * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20228753Smm * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21228753Smm * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22228753Smm * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23228753Smm * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24228753Smm * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25228753Smm */ 26228753Smm 27228753Smm 28228753Smm#include "cpio_platform.h" 29228763Smm__FBSDID("$FreeBSD: stable/11/contrib/libarchive/cpio/cpio.c 337351 2018-08-05 14:35:30Z mm $"); 30228753Smm 31228753Smm#include <sys/types.h> 32228753Smm#include <archive.h> 33228753Smm#include <archive_entry.h> 34228753Smm 35228753Smm#ifdef HAVE_SYS_MKDEV_H 36228753Smm#include <sys/mkdev.h> 37228753Smm#endif 38228753Smm#ifdef HAVE_SYS_STAT_H 39228753Smm#include <sys/stat.h> 40228753Smm#endif 41228753Smm#ifdef HAVE_SYS_TIME_H 42228753Smm#include <sys/time.h> 43228753Smm#endif 44228753Smm#ifdef HAVE_ERRNO_H 45228753Smm#include <errno.h> 46228753Smm#endif 47228753Smm#ifdef HAVE_FCNTL_H 48228753Smm#include <fcntl.h> 49228753Smm#endif 50228753Smm#ifdef HAVE_GRP_H 51228753Smm#include <grp.h> 52228753Smm#endif 53232153Smm#ifdef HAVE_LOCALE_H 54232153Smm#include <locale.h> 55232153Smm#endif 56228753Smm#ifdef HAVE_PWD_H 57228753Smm#include <pwd.h> 58228753Smm#endif 59232153Smm#ifdef HAVE_SIGNAL_H 60232153Smm#include <signal.h> 61232153Smm#endif 62228753Smm#ifdef HAVE_STDARG_H 63228753Smm#include <stdarg.h> 64228753Smm#endif 65228753Smm#ifdef HAVE_STDINT_H 66228753Smm#include <stdint.h> 67228753Smm#endif 68228753Smm#include <stdio.h> 69228753Smm#ifdef HAVE_STDLIB_H 70228753Smm#include <stdlib.h> 71228753Smm#endif 72228753Smm#ifdef HAVE_STRING_H 73228753Smm#include <string.h> 74228753Smm#endif 75228753Smm#ifdef HAVE_UNISTD_H 76228753Smm#include <unistd.h> 77228753Smm#endif 78228753Smm#ifdef HAVE_TIME_H 79228753Smm#include <time.h> 80228753Smm#endif 81228753Smm 82228753Smm#include "cpio.h" 83228753Smm#include "err.h" 84228753Smm#include "line_reader.h" 85299529Smm#include "passphrase.h" 86228753Smm 87228753Smm/* Fixed size of uname/gname caches. */ 88228753Smm#define name_cache_size 101 89228753Smm 90228753Smm#ifndef O_BINARY 91228753Smm#define O_BINARY 0 92228753Smm#endif 93228753Smm 94228753Smmstruct name_cache { 95228753Smm int probes; 96228753Smm int hits; 97228753Smm size_t size; 98228753Smm struct { 99228753Smm id_t id; 100228753Smm char *name; 101228753Smm } cache[name_cache_size]; 102228753Smm}; 103228753Smm 104228753Smmstatic int extract_data(struct archive *, struct archive *); 105228753Smmconst char * cpio_i64toa(int64_t); 106228753Smmstatic const char *cpio_rename(const char *name); 107228753Smmstatic int entry_to_archive(struct cpio *, struct archive_entry *); 108228753Smmstatic int file_to_archive(struct cpio *, const char *); 109228753Smmstatic void free_cache(struct name_cache *cache); 110228753Smmstatic void list_item_verbose(struct cpio *, struct archive_entry *); 111315432Smmstatic void long_help(void) __LA_DEAD; 112228753Smmstatic const char *lookup_gname(struct cpio *, gid_t gid); 113228753Smmstatic int lookup_gname_helper(struct cpio *, 114228753Smm const char **name, id_t gid); 115228753Smmstatic const char *lookup_uname(struct cpio *, uid_t uid); 116228753Smmstatic int lookup_uname_helper(struct cpio *, 117228753Smm const char **name, id_t uid); 118315432Smmstatic void mode_in(struct cpio *) __LA_DEAD; 119315432Smmstatic void mode_list(struct cpio *) __LA_DEAD; 120228753Smmstatic void mode_out(struct cpio *); 121228753Smmstatic void mode_pass(struct cpio *, const char *); 122232153Smmstatic const char *remove_leading_slash(const char *); 123228753Smmstatic int restore_time(struct cpio *, struct archive_entry *, 124228753Smm const char *, int fd); 125315432Smmstatic void usage(void) __LA_DEAD; 126315432Smmstatic void version(void) __LA_DEAD; 127299529Smmstatic const char * passphrase_callback(struct archive *, void *); 128299529Smmstatic void passphrase_free(char *); 129228753Smm 130228753Smmint 131228753Smmmain(int argc, char *argv[]) 132228753Smm{ 133228753Smm static char buff[16384]; 134228753Smm struct cpio _cpio; /* Allocated on stack. */ 135228753Smm struct cpio *cpio; 136228753Smm const char *errmsg; 137228753Smm int uid, gid; 138228753Smm int opt; 139228753Smm 140228753Smm cpio = &_cpio; 141228753Smm memset(cpio, 0, sizeof(*cpio)); 142228753Smm cpio->buff = buff; 143228753Smm cpio->buff_size = sizeof(buff); 144228753Smm 145232153Smm#if defined(HAVE_SIGACTION) && defined(SIGPIPE) 146232153Smm { /* Ignore SIGPIPE signals. */ 147232153Smm struct sigaction sa; 148232153Smm sigemptyset(&sa.sa_mask); 149232153Smm sa.sa_flags = 0; 150232153Smm sa.sa_handler = SIG_IGN; 151232153Smm sigaction(SIGPIPE, &sa, NULL); 152232153Smm } 153232153Smm#endif 154232153Smm 155299529Smm /* Set lafe_progname before calling lafe_warnc. */ 156299529Smm lafe_setprogname(*argv, "bsdcpio"); 157299529Smm 158232153Smm#if HAVE_SETLOCALE 159232153Smm if (setlocale(LC_ALL, "") == NULL) 160232153Smm lafe_warnc(0, "Failed to set default locale"); 161232153Smm#endif 162228753Smm 163228753Smm cpio->uid_override = -1; 164228753Smm cpio->gid_override = -1; 165228753Smm cpio->argv = argv; 166228753Smm cpio->argc = argc; 167228753Smm cpio->mode = '\0'; 168228753Smm cpio->verbose = 0; 169228753Smm cpio->compress = '\0'; 170228753Smm cpio->extract_flags = ARCHIVE_EXTRACT_NO_AUTODIR; 171228753Smm cpio->extract_flags |= ARCHIVE_EXTRACT_NO_OVERWRITE_NEWER; 172228753Smm cpio->extract_flags |= ARCHIVE_EXTRACT_SECURE_SYMLINKS; 173228753Smm cpio->extract_flags |= ARCHIVE_EXTRACT_SECURE_NODOTDOT; 174299896Smm cpio->extract_flags |= ARCHIVE_EXTRACT_SECURE_NOABSOLUTEPATHS; 175228753Smm cpio->extract_flags |= ARCHIVE_EXTRACT_PERM; 176228753Smm cpio->extract_flags |= ARCHIVE_EXTRACT_FFLAGS; 177228753Smm cpio->extract_flags |= ARCHIVE_EXTRACT_ACL; 178228753Smm#if !defined(_WIN32) && !defined(__CYGWIN__) 179228753Smm if (geteuid() == 0) 180228753Smm cpio->extract_flags |= ARCHIVE_EXTRACT_OWNER; 181228753Smm#endif 182228753Smm cpio->bytes_per_block = 512; 183228753Smm cpio->filename = NULL; 184228753Smm 185238856Smm cpio->matching = archive_match_new(); 186238856Smm if (cpio->matching == NULL) 187238856Smm lafe_errc(1, 0, "Out of memory"); 188238856Smm 189228753Smm while ((opt = cpio_getopt(cpio)) != -1) { 190228753Smm switch (opt) { 191228753Smm case '0': /* GNU convention: --null, -0 */ 192228753Smm cpio->option_null = 1; 193228753Smm break; 194228753Smm case 'A': /* NetBSD/OpenBSD */ 195228753Smm cpio->option_append = 1; 196228753Smm break; 197228753Smm case 'a': /* POSIX 1997 */ 198228753Smm cpio->option_atime_restore = 1; 199228753Smm break; 200228753Smm case 'B': /* POSIX 1997 */ 201228753Smm cpio->bytes_per_block = 5120; 202228753Smm break; 203248616Smm case OPTION_B64ENCODE: 204248616Smm cpio->add_filter = opt; 205248616Smm break; 206228753Smm case 'C': /* NetBSD/OpenBSD */ 207232153Smm cpio->bytes_per_block = atoi(cpio->argument); 208228753Smm if (cpio->bytes_per_block <= 0) 209232153Smm lafe_errc(1, 0, "Invalid blocksize %s", cpio->argument); 210228753Smm break; 211228753Smm case 'c': /* POSIX 1997 */ 212228753Smm cpio->format = "odc"; 213228753Smm break; 214228753Smm case 'd': /* POSIX 1997 */ 215228753Smm cpio->extract_flags &= ~ARCHIVE_EXTRACT_NO_AUTODIR; 216228753Smm break; 217228753Smm case 'E': /* NetBSD/OpenBSD */ 218238856Smm if (archive_match_include_pattern_from_file( 219238856Smm cpio->matching, cpio->argument, 220238856Smm cpio->option_null) != ARCHIVE_OK) 221238856Smm lafe_errc(1, 0, "Error : %s", 222238856Smm archive_error_string(cpio->matching)); 223228753Smm break; 224228753Smm case 'F': /* NetBSD/OpenBSD/GNU cpio */ 225232153Smm cpio->filename = cpio->argument; 226228753Smm break; 227228753Smm case 'f': /* POSIX 1997 */ 228238856Smm if (archive_match_exclude_pattern(cpio->matching, 229238856Smm cpio->argument) != ARCHIVE_OK) 230238856Smm lafe_errc(1, 0, "Error : %s", 231238856Smm archive_error_string(cpio->matching)); 232228753Smm break; 233248616Smm case OPTION_GRZIP: 234248616Smm cpio->compress = opt; 235248616Smm break; 236228753Smm case 'H': /* GNU cpio (also --format) */ 237232153Smm cpio->format = cpio->argument; 238228753Smm break; 239228753Smm case 'h': 240228753Smm long_help(); 241228753Smm break; 242228753Smm case 'I': /* NetBSD/OpenBSD */ 243232153Smm cpio->filename = cpio->argument; 244228753Smm break; 245228753Smm case 'i': /* POSIX 1997 */ 246228753Smm if (cpio->mode != '\0') 247228753Smm lafe_errc(1, 0, 248228753Smm "Cannot use both -i and -%c", cpio->mode); 249228753Smm cpio->mode = opt; 250228753Smm break; 251228753Smm case 'J': /* GNU tar, others */ 252228753Smm cpio->compress = opt; 253228753Smm break; 254228753Smm case 'j': /* GNU tar, others */ 255228753Smm cpio->compress = opt; 256228753Smm break; 257228753Smm case OPTION_INSECURE: 258228753Smm cpio->extract_flags &= ~ARCHIVE_EXTRACT_SECURE_SYMLINKS; 259228753Smm cpio->extract_flags &= ~ARCHIVE_EXTRACT_SECURE_NODOTDOT; 260299896Smm cpio->extract_flags &= ~ARCHIVE_EXTRACT_SECURE_NOABSOLUTEPATHS; 261228753Smm break; 262228753Smm case 'L': /* GNU cpio */ 263228753Smm cpio->option_follow_links = 1; 264228753Smm break; 265228753Smm case 'l': /* POSIX 1997 */ 266228753Smm cpio->option_link = 1; 267228753Smm break; 268248616Smm case OPTION_LRZIP: 269299529Smm case OPTION_LZ4: 270228753Smm case OPTION_LZMA: /* GNU tar, others */ 271248616Smm case OPTION_LZOP: /* GNU tar, others */ 272324417Smm case OPTION_ZSTD: 273228753Smm cpio->compress = opt; 274228753Smm break; 275228753Smm case 'm': /* POSIX 1997 */ 276228753Smm cpio->extract_flags |= ARCHIVE_EXTRACT_TIME; 277228753Smm break; 278228753Smm case 'n': /* GNU cpio */ 279228753Smm cpio->option_numeric_uid_gid = 1; 280228753Smm break; 281228753Smm case OPTION_NO_PRESERVE_OWNER: /* GNU cpio */ 282228753Smm cpio->extract_flags &= ~ARCHIVE_EXTRACT_OWNER; 283228753Smm break; 284228753Smm case 'O': /* GNU cpio */ 285232153Smm cpio->filename = cpio->argument; 286228753Smm break; 287228753Smm case 'o': /* POSIX 1997 */ 288228753Smm if (cpio->mode != '\0') 289228753Smm lafe_errc(1, 0, 290228753Smm "Cannot use both -o and -%c", cpio->mode); 291228753Smm cpio->mode = opt; 292228753Smm break; 293228753Smm case 'p': /* POSIX 1997 */ 294228753Smm if (cpio->mode != '\0') 295228753Smm lafe_errc(1, 0, 296228753Smm "Cannot use both -p and -%c", cpio->mode); 297228753Smm cpio->mode = opt; 298228753Smm cpio->extract_flags &= ~ARCHIVE_EXTRACT_SECURE_NODOTDOT; 299299896Smm cpio->extract_flags &= ~ARCHIVE_EXTRACT_SECURE_NOABSOLUTEPATHS; 300228753Smm break; 301299529Smm case OPTION_PASSPHRASE: 302299529Smm cpio->passphrase = cpio->argument; 303299529Smm break; 304228753Smm case OPTION_PRESERVE_OWNER: 305228753Smm cpio->extract_flags |= ARCHIVE_EXTRACT_OWNER; 306228753Smm break; 307228753Smm case OPTION_QUIET: /* GNU cpio */ 308228753Smm cpio->quiet = 1; 309228753Smm break; 310228753Smm case 'R': /* GNU cpio, also --owner */ 311228777Smm /* TODO: owner_parse should return uname/gname 312228777Smm * also; use that to set [ug]name_override. */ 313232153Smm errmsg = owner_parse(cpio->argument, &uid, &gid); 314228753Smm if (errmsg) { 315228753Smm lafe_warnc(-1, "%s", errmsg); 316228753Smm usage(); 317228753Smm } 318228777Smm if (uid != -1) { 319228753Smm cpio->uid_override = uid; 320228777Smm cpio->uname_override = NULL; 321228777Smm } 322228777Smm if (gid != -1) { 323228753Smm cpio->gid_override = gid; 324228777Smm cpio->gname_override = NULL; 325228777Smm } 326228753Smm break; 327228753Smm case 'r': /* POSIX 1997 */ 328228753Smm cpio->option_rename = 1; 329228753Smm break; 330228753Smm case 't': /* POSIX 1997 */ 331228753Smm cpio->option_list = 1; 332228753Smm break; 333228753Smm case 'u': /* POSIX 1997 */ 334228753Smm cpio->extract_flags 335228753Smm &= ~ARCHIVE_EXTRACT_NO_OVERWRITE_NEWER; 336228753Smm break; 337248616Smm case OPTION_UUENCODE: 338248616Smm cpio->add_filter = opt; 339248616Smm break; 340228753Smm case 'v': /* POSIX 1997 */ 341228753Smm cpio->verbose++; 342228753Smm break; 343232153Smm case 'V': /* GNU cpio */ 344232153Smm cpio->dot++; 345232153Smm break; 346228753Smm case OPTION_VERSION: /* GNU convention */ 347228753Smm version(); 348228753Smm break; 349228753Smm#if 0 350228753Smm /* 351228753Smm * cpio_getopt() handles -W specially, so it's not 352228753Smm * available here. 353228753Smm */ 354228753Smm case 'W': /* Obscure, but useful GNU convention. */ 355228753Smm break; 356228753Smm#endif 357228753Smm case 'y': /* tar convention */ 358228753Smm cpio->compress = opt; 359228753Smm break; 360228753Smm case 'Z': /* tar convention */ 361228753Smm cpio->compress = opt; 362228753Smm break; 363228753Smm case 'z': /* tar convention */ 364228753Smm cpio->compress = opt; 365228753Smm break; 366228753Smm default: 367228753Smm usage(); 368228753Smm } 369228753Smm } 370228753Smm 371228753Smm /* 372228753Smm * Sanity-check args, error out on nonsensical combinations. 373228753Smm */ 374228753Smm /* -t implies -i if no mode was specified. */ 375228753Smm if (cpio->option_list && cpio->mode == '\0') 376228753Smm cpio->mode = 'i'; 377228753Smm /* -t requires -i */ 378228753Smm if (cpio->option_list && cpio->mode != 'i') 379228753Smm lafe_errc(1, 0, "Option -t requires -i"); 380228753Smm /* -n requires -it */ 381228753Smm if (cpio->option_numeric_uid_gid && !cpio->option_list) 382228753Smm lafe_errc(1, 0, "Option -n requires -it"); 383228753Smm /* Can only specify format when writing */ 384228753Smm if (cpio->format != NULL && cpio->mode != 'o') 385228753Smm lafe_errc(1, 0, "Option --format requires -o"); 386228753Smm /* -l requires -p */ 387228753Smm if (cpio->option_link && cpio->mode != 'p') 388228753Smm lafe_errc(1, 0, "Option -l requires -p"); 389232153Smm /* -v overrides -V */ 390232153Smm if (cpio->dot && cpio->verbose) 391232153Smm cpio->dot = 0; 392228753Smm /* TODO: Flag other nonsensical combinations. */ 393228753Smm 394228753Smm switch (cpio->mode) { 395228753Smm case 'o': 396228753Smm /* TODO: Implement old binary format in libarchive, 397228753Smm use that here. */ 398228753Smm if (cpio->format == NULL) 399228753Smm cpio->format = "odc"; /* Default format */ 400228753Smm 401228753Smm mode_out(cpio); 402228753Smm break; 403228753Smm case 'i': 404228753Smm while (*cpio->argv != NULL) { 405238856Smm if (archive_match_include_pattern(cpio->matching, 406238856Smm *cpio->argv) != ARCHIVE_OK) 407238856Smm lafe_errc(1, 0, "Error : %s", 408238856Smm archive_error_string(cpio->matching)); 409228753Smm --cpio->argc; 410228753Smm ++cpio->argv; 411228753Smm } 412228753Smm if (cpio->option_list) 413228753Smm mode_list(cpio); 414228753Smm else 415228753Smm mode_in(cpio); 416228753Smm break; 417228753Smm case 'p': 418228753Smm if (*cpio->argv == NULL || **cpio->argv == '\0') 419228753Smm lafe_errc(1, 0, 420228753Smm "-p mode requires a target directory"); 421228753Smm mode_pass(cpio, *cpio->argv); 422228753Smm break; 423228753Smm default: 424228753Smm lafe_errc(1, 0, 425228753Smm "Must specify at least one of -i, -o, or -p"); 426228753Smm } 427228753Smm 428238856Smm archive_match_free(cpio->matching); 429228753Smm free_cache(cpio->gname_cache); 430228753Smm free_cache(cpio->uname_cache); 431248616Smm free(cpio->destdir); 432299529Smm passphrase_free(cpio->ppbuff); 433228753Smm return (cpio->return_value); 434228753Smm} 435228753Smm 436228753Smmstatic void 437228753Smmusage(void) 438228753Smm{ 439228753Smm const char *p; 440228753Smm 441299529Smm p = lafe_getprogname(); 442228753Smm 443228753Smm fprintf(stderr, "Brief Usage:\n"); 444228753Smm fprintf(stderr, " List: %s -it < archive\n", p); 445228753Smm fprintf(stderr, " Extract: %s -i < archive\n", p); 446228753Smm fprintf(stderr, " Create: %s -o < filenames > archive\n", p); 447228753Smm fprintf(stderr, " Help: %s --help\n", p); 448228753Smm exit(1); 449228753Smm} 450228753Smm 451228753Smmstatic const char *long_help_msg = 452228753Smm "First option must be a mode specifier:\n" 453228753Smm " -i Input -o Output -p Pass\n" 454228753Smm "Common Options:\n" 455232153Smm " -v Verbose filenames -V one dot per file\n" 456228753Smm "Create: %p -o [options] < [list of files] > [archive]\n" 457228753Smm " -J,-y,-z,--lzma Compress archive with xz/bzip2/gzip/lzma\n" 458228753Smm " --format {odc|newc|ustar} Select archive format\n" 459228753Smm "List: %p -it < [archive]\n" 460228753Smm "Extract: %p -i [options] < [archive]\n"; 461228753Smm 462228753Smm 463228753Smm/* 464228753Smm * Note that the word 'bsdcpio' will always appear in the first line 465228753Smm * of output. 466228753Smm * 467228753Smm * In particular, /bin/sh scripts that need to test for the presence 468228753Smm * of bsdcpio can use the following template: 469228753Smm * 470228753Smm * if (cpio --help 2>&1 | grep bsdcpio >/dev/null 2>&1 ) then \ 471228753Smm * echo bsdcpio; else echo not bsdcpio; fi 472228753Smm */ 473228753Smmstatic void 474228753Smmlong_help(void) 475228753Smm{ 476228753Smm const char *prog; 477228753Smm const char *p; 478228753Smm 479299529Smm prog = lafe_getprogname(); 480228753Smm 481228753Smm fflush(stderr); 482228753Smm 483228753Smm p = (strcmp(prog,"bsdcpio") != 0) ? "(bsdcpio)" : ""; 484228753Smm printf("%s%s: manipulate archive files\n", prog, p); 485228753Smm 486228753Smm for (p = long_help_msg; *p != '\0'; p++) { 487228753Smm if (*p == '%') { 488228753Smm if (p[1] == 'p') { 489228753Smm fputs(prog, stdout); 490228753Smm p++; 491228753Smm } else 492228753Smm putchar('%'); 493228753Smm } else 494228753Smm putchar(*p); 495228753Smm } 496228753Smm version(); 497228753Smm} 498228753Smm 499228753Smmstatic void 500228753Smmversion(void) 501228753Smm{ 502337351Smm fprintf(stdout,"bsdcpio %s - %s \n", 503228753Smm BSDCPIO_VERSION_STRING, 504299529Smm archive_version_details()); 505228753Smm exit(0); 506228753Smm} 507228753Smm 508228753Smmstatic void 509228753Smmmode_out(struct cpio *cpio) 510228753Smm{ 511228753Smm struct archive_entry *entry, *spare; 512228753Smm struct lafe_line_reader *lr; 513228753Smm const char *p; 514228753Smm int r; 515228753Smm 516228753Smm if (cpio->option_append) 517228753Smm lafe_errc(1, 0, "Append mode not yet supported."); 518228753Smm 519228753Smm cpio->archive_read_disk = archive_read_disk_new(); 520228753Smm if (cpio->archive_read_disk == NULL) 521228753Smm lafe_errc(1, 0, "Failed to allocate archive object"); 522228753Smm if (cpio->option_follow_links) 523228753Smm archive_read_disk_set_symlink_logical(cpio->archive_read_disk); 524228753Smm else 525228753Smm archive_read_disk_set_symlink_physical(cpio->archive_read_disk); 526228753Smm archive_read_disk_set_standard_lookup(cpio->archive_read_disk); 527228753Smm 528228753Smm cpio->archive = archive_write_new(); 529228753Smm if (cpio->archive == NULL) 530228753Smm lafe_errc(1, 0, "Failed to allocate archive object"); 531228753Smm switch (cpio->compress) { 532248616Smm case OPTION_GRZIP: 533248616Smm r = archive_write_add_filter_grzip(cpio->archive); 534248616Smm break; 535228753Smm case 'J': 536248616Smm r = archive_write_add_filter_xz(cpio->archive); 537228753Smm break; 538248616Smm case OPTION_LRZIP: 539248616Smm r = archive_write_add_filter_lrzip(cpio->archive); 540248616Smm break; 541299529Smm case OPTION_LZ4: 542299529Smm r = archive_write_add_filter_lz4(cpio->archive); 543299529Smm break; 544228753Smm case OPTION_LZMA: 545248616Smm r = archive_write_add_filter_lzma(cpio->archive); 546228753Smm break; 547248616Smm case OPTION_LZOP: 548248616Smm r = archive_write_add_filter_lzop(cpio->archive); 549248616Smm break; 550324417Smm case OPTION_ZSTD: 551324417Smm r = archive_write_add_filter_zstd(cpio->archive); 552324417Smm break; 553228753Smm case 'j': case 'y': 554248616Smm r = archive_write_add_filter_bzip2(cpio->archive); 555228753Smm break; 556228753Smm case 'z': 557248616Smm r = archive_write_add_filter_gzip(cpio->archive); 558228753Smm break; 559228753Smm case 'Z': 560248616Smm r = archive_write_add_filter_compress(cpio->archive); 561228753Smm break; 562228753Smm default: 563248616Smm r = archive_write_add_filter_none(cpio->archive); 564228753Smm break; 565228753Smm } 566228753Smm if (r < ARCHIVE_WARN) 567228753Smm lafe_errc(1, 0, "Requested compression not available"); 568248616Smm switch (cpio->add_filter) { 569248616Smm case 0: 570248616Smm r = ARCHIVE_OK; 571248616Smm break; 572248616Smm case OPTION_B64ENCODE: 573248616Smm r = archive_write_add_filter_b64encode(cpio->archive); 574248616Smm break; 575248616Smm case OPTION_UUENCODE: 576248616Smm r = archive_write_add_filter_uuencode(cpio->archive); 577248616Smm break; 578248616Smm } 579248616Smm if (r < ARCHIVE_WARN) 580248616Smm lafe_errc(1, 0, "Requested filter not available"); 581228753Smm r = archive_write_set_format_by_name(cpio->archive, cpio->format); 582228753Smm if (r != ARCHIVE_OK) 583228753Smm lafe_errc(1, 0, "%s", archive_error_string(cpio->archive)); 584228753Smm archive_write_set_bytes_per_block(cpio->archive, cpio->bytes_per_block); 585228753Smm cpio->linkresolver = archive_entry_linkresolver_new(); 586228753Smm archive_entry_linkresolver_set_strategy(cpio->linkresolver, 587228753Smm archive_format(cpio->archive)); 588299529Smm if (cpio->passphrase != NULL) 589299529Smm r = archive_write_set_passphrase(cpio->archive, 590299529Smm cpio->passphrase); 591299529Smm else 592299529Smm r = archive_write_set_passphrase_callback(cpio->archive, cpio, 593299529Smm &passphrase_callback); 594299529Smm if (r != ARCHIVE_OK) 595299529Smm lafe_errc(1, 0, "%s", archive_error_string(cpio->archive)); 596228753Smm 597228753Smm /* 598228753Smm * The main loop: Copy each file into the output archive. 599228753Smm */ 600248616Smm r = archive_write_open_filename(cpio->archive, cpio->filename); 601228753Smm if (r != ARCHIVE_OK) 602228753Smm lafe_errc(1, 0, "%s", archive_error_string(cpio->archive)); 603228753Smm lr = lafe_line_reader("-", cpio->option_null); 604228753Smm while ((p = lafe_line_reader_next(lr)) != NULL) 605228753Smm file_to_archive(cpio, p); 606228753Smm lafe_line_reader_free(lr); 607228753Smm 608228753Smm /* 609228753Smm * The hardlink detection may have queued up a couple of entries 610228753Smm * that can now be flushed. 611228753Smm */ 612228753Smm entry = NULL; 613228753Smm archive_entry_linkify(cpio->linkresolver, &entry, &spare); 614228753Smm while (entry != NULL) { 615228753Smm entry_to_archive(cpio, entry); 616228753Smm archive_entry_free(entry); 617228753Smm entry = NULL; 618228753Smm archive_entry_linkify(cpio->linkresolver, &entry, &spare); 619228753Smm } 620228753Smm 621228753Smm r = archive_write_close(cpio->archive); 622232153Smm if (cpio->dot) 623232153Smm fprintf(stderr, "\n"); 624228753Smm if (r != ARCHIVE_OK) 625228753Smm lafe_errc(1, 0, "%s", archive_error_string(cpio->archive)); 626228753Smm 627228753Smm if (!cpio->quiet) { 628228753Smm int64_t blocks = 629248616Smm (archive_filter_bytes(cpio->archive, 0) + 511) 630228753Smm / 512; 631228753Smm fprintf(stderr, "%lu %s\n", (unsigned long)blocks, 632228753Smm blocks == 1 ? "block" : "blocks"); 633228753Smm } 634232153Smm archive_write_free(cpio->archive); 635318482Smm archive_entry_linkresolver_free(cpio->linkresolver); 636228753Smm} 637228753Smm 638232153Smmstatic const char * 639232153Smmremove_leading_slash(const char *p) 640232153Smm{ 641232153Smm const char *rp; 642232153Smm 643232153Smm /* Remove leading "//./" or "//?/" or "//?/UNC/" 644232153Smm * (absolute path prefixes used by Windows API) */ 645232153Smm if ((p[0] == '/' || p[0] == '\\') && 646232153Smm (p[1] == '/' || p[1] == '\\') && 647232153Smm (p[2] == '.' || p[2] == '?') && 648232153Smm (p[3] == '/' || p[3] == '\\')) 649232153Smm { 650232153Smm if (p[2] == '?' && 651232153Smm (p[4] == 'U' || p[4] == 'u') && 652232153Smm (p[5] == 'N' || p[5] == 'n') && 653232153Smm (p[6] == 'C' || p[6] == 'c') && 654232153Smm (p[7] == '/' || p[7] == '\\')) 655232153Smm p += 8; 656232153Smm else 657232153Smm p += 4; 658232153Smm } 659232153Smm do { 660232153Smm rp = p; 661232153Smm /* Remove leading drive letter from archives created 662232153Smm * on Windows. */ 663232153Smm if (((p[0] >= 'a' && p[0] <= 'z') || 664232153Smm (p[0] >= 'A' && p[0] <= 'Z')) && 665232153Smm p[1] == ':') { 666232153Smm p += 2; 667232153Smm } 668232153Smm /* Remove leading "/../", "//", etc. */ 669232153Smm while (p[0] == '/' || p[0] == '\\') { 670232153Smm if (p[1] == '.' && p[2] == '.' && 671232153Smm (p[3] == '/' || p[3] == '\\')) { 672232153Smm p += 3; /* Remove "/..", leave "/" 673232153Smm * for next pass. */ 674232153Smm } else 675232153Smm p += 1; /* Remove "/". */ 676232153Smm } 677232153Smm } while (rp != p); 678232153Smm return (p); 679232153Smm} 680232153Smm 681228753Smm/* 682228753Smm * This is used by both out mode (to copy objects from disk into 683228753Smm * an archive) and pass mode (to copy objects from disk to 684228753Smm * an archive_write_disk "archive"). 685228753Smm */ 686228753Smmstatic int 687228753Smmfile_to_archive(struct cpio *cpio, const char *srcpath) 688228753Smm{ 689228753Smm const char *destpath; 690228753Smm struct archive_entry *entry, *spare; 691228753Smm size_t len; 692228753Smm int r; 693228753Smm 694228753Smm /* 695228753Smm * Create an archive_entry describing the source file. 696228753Smm * 697228753Smm */ 698228753Smm entry = archive_entry_new(); 699228753Smm if (entry == NULL) 700228753Smm lafe_errc(1, 0, "Couldn't allocate entry"); 701228753Smm archive_entry_copy_sourcepath(entry, srcpath); 702228753Smm r = archive_read_disk_entry_from_file(cpio->archive_read_disk, 703228753Smm entry, -1, NULL); 704228753Smm if (r < ARCHIVE_FAILED) 705228753Smm lafe_errc(1, 0, "%s", 706228753Smm archive_error_string(cpio->archive_read_disk)); 707228753Smm if (r < ARCHIVE_OK) 708228753Smm lafe_warnc(0, "%s", 709228753Smm archive_error_string(cpio->archive_read_disk)); 710228753Smm if (r <= ARCHIVE_FAILED) { 711313570Smm archive_entry_free(entry); 712228753Smm cpio->return_value = 1; 713228753Smm return (r); 714228753Smm } 715228753Smm 716228777Smm if (cpio->uid_override >= 0) { 717228753Smm archive_entry_set_uid(entry, cpio->uid_override); 718228777Smm archive_entry_set_uname(entry, cpio->uname_override); 719228777Smm } 720228777Smm if (cpio->gid_override >= 0) { 721228753Smm archive_entry_set_gid(entry, cpio->gid_override); 722228777Smm archive_entry_set_gname(entry, cpio->gname_override); 723228777Smm } 724228753Smm 725228753Smm /* 726228753Smm * Generate a destination path for this entry. 727228753Smm * "destination path" is the name to which it will be copied in 728228753Smm * pass mode or the name that will go into the archive in 729228753Smm * output mode. 730228753Smm */ 731228753Smm destpath = srcpath; 732228753Smm if (cpio->destdir) { 733228753Smm len = strlen(cpio->destdir) + strlen(srcpath) + 8; 734228753Smm if (len >= cpio->pass_destpath_alloc) { 735228753Smm while (len >= cpio->pass_destpath_alloc) { 736228753Smm cpio->pass_destpath_alloc += 512; 737228753Smm cpio->pass_destpath_alloc *= 2; 738228753Smm } 739228753Smm free(cpio->pass_destpath); 740228753Smm cpio->pass_destpath = malloc(cpio->pass_destpath_alloc); 741228753Smm if (cpio->pass_destpath == NULL) 742228753Smm lafe_errc(1, ENOMEM, 743228753Smm "Can't allocate path buffer"); 744228753Smm } 745228753Smm strcpy(cpio->pass_destpath, cpio->destdir); 746232153Smm strcat(cpio->pass_destpath, remove_leading_slash(srcpath)); 747228753Smm destpath = cpio->pass_destpath; 748228753Smm } 749228753Smm if (cpio->option_rename) 750228753Smm destpath = cpio_rename(destpath); 751228753Smm if (destpath == NULL) 752228753Smm return (0); 753228753Smm archive_entry_copy_pathname(entry, destpath); 754228753Smm 755228753Smm /* 756228753Smm * If we're trying to preserve hardlinks, match them here. 757228753Smm */ 758228753Smm spare = NULL; 759228753Smm if (cpio->linkresolver != NULL 760228753Smm && archive_entry_filetype(entry) != AE_IFDIR) { 761228753Smm archive_entry_linkify(cpio->linkresolver, &entry, &spare); 762228753Smm } 763228753Smm 764228753Smm if (entry != NULL) { 765228753Smm r = entry_to_archive(cpio, entry); 766228753Smm archive_entry_free(entry); 767228753Smm if (spare != NULL) { 768228753Smm if (r == 0) 769228753Smm r = entry_to_archive(cpio, spare); 770228753Smm archive_entry_free(spare); 771228753Smm } 772228753Smm } 773228753Smm return (r); 774228753Smm} 775228753Smm 776228753Smmstatic int 777228753Smmentry_to_archive(struct cpio *cpio, struct archive_entry *entry) 778228753Smm{ 779228753Smm const char *destpath = archive_entry_pathname(entry); 780228753Smm const char *srcpath = archive_entry_sourcepath(entry); 781228753Smm int fd = -1; 782228753Smm ssize_t bytes_read; 783228753Smm int r; 784228753Smm 785228753Smm /* Print out the destination name to the user. */ 786228753Smm if (cpio->verbose) 787228753Smm fprintf(stderr,"%s", destpath); 788232153Smm if (cpio->dot) 789232153Smm fprintf(stderr, "."); 790228753Smm 791228753Smm /* 792228753Smm * Option_link only makes sense in pass mode and for 793228753Smm * regular files. Also note: if a link operation fails 794228753Smm * because of cross-device restrictions, we'll fall back 795228753Smm * to copy mode for that entry. 796228753Smm * 797228753Smm * TODO: Test other cpio implementations to see if they 798228753Smm * hard-link anything other than regular files here. 799228753Smm */ 800228753Smm if (cpio->option_link 801228753Smm && archive_entry_filetype(entry) == AE_IFREG) 802228753Smm { 803228753Smm struct archive_entry *t; 804228753Smm /* Save the original entry in case we need it later. */ 805228753Smm t = archive_entry_clone(entry); 806228753Smm if (t == NULL) 807228753Smm lafe_errc(1, ENOMEM, "Can't create link"); 808228753Smm /* Note: link(2) doesn't create parent directories, 809228753Smm * so we use archive_write_header() instead as a 810228753Smm * convenience. */ 811228753Smm archive_entry_set_hardlink(t, srcpath); 812228753Smm /* This is a straight link that carries no data. */ 813228753Smm archive_entry_set_size(t, 0); 814228753Smm r = archive_write_header(cpio->archive, t); 815228753Smm archive_entry_free(t); 816228753Smm if (r != ARCHIVE_OK) 817228753Smm lafe_warnc(archive_errno(cpio->archive), 818228753Smm "%s", archive_error_string(cpio->archive)); 819228753Smm if (r == ARCHIVE_FATAL) 820228753Smm exit(1); 821228753Smm#ifdef EXDEV 822228753Smm if (r != ARCHIVE_OK && archive_errno(cpio->archive) == EXDEV) { 823228753Smm /* Cross-device link: Just fall through and use 824228753Smm * the original entry to copy the file over. */ 825228753Smm lafe_warnc(0, "Copying file instead"); 826228753Smm } else 827228753Smm#endif 828228753Smm return (0); 829228753Smm } 830228753Smm 831228753Smm /* 832228753Smm * Make sure we can open the file (if necessary) before 833228753Smm * trying to write the header. 834228753Smm */ 835228753Smm if (archive_entry_filetype(entry) == AE_IFREG) { 836228753Smm if (archive_entry_size(entry) > 0) { 837228753Smm fd = open(srcpath, O_RDONLY | O_BINARY); 838228753Smm if (fd < 0) { 839228753Smm lafe_warnc(errno, 840228753Smm "%s: could not open file", srcpath); 841228753Smm goto cleanup; 842228753Smm } 843228753Smm } 844228753Smm } else { 845228753Smm archive_entry_set_size(entry, 0); 846228753Smm } 847228753Smm 848228753Smm r = archive_write_header(cpio->archive, entry); 849228753Smm 850228753Smm if (r != ARCHIVE_OK) 851228753Smm lafe_warnc(archive_errno(cpio->archive), 852228753Smm "%s: %s", 853228753Smm srcpath, 854228753Smm archive_error_string(cpio->archive)); 855228753Smm 856228753Smm if (r == ARCHIVE_FATAL) 857228753Smm exit(1); 858228753Smm 859232153Smm if (r >= ARCHIVE_WARN && archive_entry_size(entry) > 0 && fd >= 0) { 860248616Smm bytes_read = read(fd, cpio->buff, (unsigned)cpio->buff_size); 861228753Smm while (bytes_read > 0) { 862248616Smm ssize_t bytes_write; 863248616Smm bytes_write = archive_write_data(cpio->archive, 864228753Smm cpio->buff, bytes_read); 865248616Smm if (bytes_write < 0) 866228753Smm lafe_errc(1, archive_errno(cpio->archive), 867228753Smm "%s", archive_error_string(cpio->archive)); 868248616Smm if (bytes_write < bytes_read) { 869228753Smm lafe_warnc(0, 870248616Smm "Truncated write; file may have " 871248616Smm "grown while being archived."); 872228753Smm } 873248616Smm bytes_read = read(fd, cpio->buff, 874248616Smm (unsigned)cpio->buff_size); 875228753Smm } 876228753Smm } 877228753Smm 878228753Smm fd = restore_time(cpio, entry, srcpath, fd); 879228753Smm 880228753Smmcleanup: 881228753Smm if (cpio->verbose) 882228753Smm fprintf(stderr,"\n"); 883228753Smm if (fd >= 0) 884228753Smm close(fd); 885228753Smm return (0); 886228753Smm} 887228753Smm 888228753Smmstatic int 889228753Smmrestore_time(struct cpio *cpio, struct archive_entry *entry, 890228753Smm const char *name, int fd) 891228753Smm{ 892228753Smm#ifndef HAVE_UTIMES 893228753Smm static int warned = 0; 894228753Smm 895228753Smm (void)cpio; /* UNUSED */ 896228753Smm (void)entry; /* UNUSED */ 897228753Smm (void)name; /* UNUSED */ 898228753Smm 899228753Smm if (!warned) 900228753Smm lafe_warnc(0, "Can't restore access times on this platform"); 901228753Smm warned = 1; 902228753Smm return (fd); 903228753Smm#else 904228753Smm#if defined(_WIN32) && !defined(__CYGWIN__) 905228753Smm struct __timeval times[2]; 906228753Smm#else 907228753Smm struct timeval times[2]; 908228753Smm#endif 909228753Smm 910228753Smm if (!cpio->option_atime_restore) 911228753Smm return (fd); 912228753Smm 913228753Smm times[1].tv_sec = archive_entry_mtime(entry); 914228753Smm times[1].tv_usec = archive_entry_mtime_nsec(entry) / 1000; 915228753Smm 916228753Smm times[0].tv_sec = archive_entry_atime(entry); 917228753Smm times[0].tv_usec = archive_entry_atime_nsec(entry) / 1000; 918228753Smm 919228753Smm#if defined(HAVE_FUTIMES) && !defined(__CYGWIN__) 920228753Smm if (fd >= 0 && futimes(fd, times) == 0) 921228753Smm return (fd); 922228753Smm#endif 923228753Smm /* 924228753Smm * Some platform cannot restore access times if the file descriptor 925228753Smm * is still opened. 926228753Smm */ 927228753Smm if (fd >= 0) { 928228753Smm close(fd); 929228753Smm fd = -1; 930228753Smm } 931228753Smm 932228753Smm#ifdef HAVE_LUTIMES 933228753Smm if (lutimes(name, times) != 0) 934228753Smm#else 935228753Smm if ((AE_IFLNK != archive_entry_filetype(entry)) 936228753Smm && utimes(name, times) != 0) 937228753Smm#endif 938228753Smm lafe_warnc(errno, "Can't update time for %s", name); 939228753Smm#endif 940228753Smm return (fd); 941228753Smm} 942228753Smm 943228753Smm 944228753Smmstatic void 945228753Smmmode_in(struct cpio *cpio) 946228753Smm{ 947228753Smm struct archive *a; 948228753Smm struct archive_entry *entry; 949228753Smm struct archive *ext; 950228753Smm const char *destpath; 951228753Smm int r; 952228753Smm 953228753Smm ext = archive_write_disk_new(); 954228753Smm if (ext == NULL) 955228753Smm lafe_errc(1, 0, "Couldn't allocate restore object"); 956228753Smm r = archive_write_disk_set_options(ext, cpio->extract_flags); 957228753Smm if (r != ARCHIVE_OK) 958228753Smm lafe_errc(1, 0, "%s", archive_error_string(ext)); 959228753Smm a = archive_read_new(); 960228753Smm if (a == NULL) 961228753Smm lafe_errc(1, 0, "Couldn't allocate archive object"); 962232153Smm archive_read_support_filter_all(a); 963228753Smm archive_read_support_format_all(a); 964299529Smm if (cpio->passphrase != NULL) 965299529Smm r = archive_read_add_passphrase(a, cpio->passphrase); 966299529Smm else 967299529Smm r = archive_read_set_passphrase_callback(a, cpio, 968299529Smm &passphrase_callback); 969299529Smm if (r != ARCHIVE_OK) 970299529Smm lafe_errc(1, 0, "%s", archive_error_string(a)); 971228753Smm 972248616Smm if (archive_read_open_filename(a, cpio->filename, 973248616Smm cpio->bytes_per_block)) 974228753Smm lafe_errc(1, archive_errno(a), 975228753Smm "%s", archive_error_string(a)); 976228753Smm for (;;) { 977228753Smm r = archive_read_next_header(a, &entry); 978228753Smm if (r == ARCHIVE_EOF) 979228753Smm break; 980228753Smm if (r != ARCHIVE_OK) { 981228753Smm lafe_errc(1, archive_errno(a), 982228753Smm "%s", archive_error_string(a)); 983228753Smm } 984238856Smm if (archive_match_path_excluded(cpio->matching, entry)) 985228753Smm continue; 986228753Smm if (cpio->option_rename) { 987228753Smm destpath = cpio_rename(archive_entry_pathname(entry)); 988228753Smm archive_entry_set_pathname(entry, destpath); 989228753Smm } else 990228753Smm destpath = archive_entry_pathname(entry); 991228753Smm if (destpath == NULL) 992228753Smm continue; 993228753Smm if (cpio->verbose) 994232153Smm fprintf(stderr, "%s\n", destpath); 995232153Smm if (cpio->dot) 996232153Smm fprintf(stderr, "."); 997228753Smm if (cpio->uid_override >= 0) 998228753Smm archive_entry_set_uid(entry, cpio->uid_override); 999228753Smm if (cpio->gid_override >= 0) 1000228753Smm archive_entry_set_gid(entry, cpio->gid_override); 1001228753Smm r = archive_write_header(ext, entry); 1002228753Smm if (r != ARCHIVE_OK) { 1003228753Smm fprintf(stderr, "%s: %s\n", 1004228753Smm archive_entry_pathname(entry), 1005228753Smm archive_error_string(ext)); 1006232153Smm } else if (!archive_entry_size_is_set(entry) 1007232153Smm || archive_entry_size(entry) > 0) { 1008228753Smm r = extract_data(a, ext); 1009228753Smm if (r != ARCHIVE_OK) 1010228753Smm cpio->return_value = 1; 1011228753Smm } 1012228753Smm } 1013228753Smm r = archive_read_close(a); 1014232153Smm if (cpio->dot) 1015232153Smm fprintf(stderr, "\n"); 1016228753Smm if (r != ARCHIVE_OK) 1017228753Smm lafe_errc(1, 0, "%s", archive_error_string(a)); 1018228753Smm r = archive_write_close(ext); 1019228753Smm if (r != ARCHIVE_OK) 1020228753Smm lafe_errc(1, 0, "%s", archive_error_string(ext)); 1021228753Smm if (!cpio->quiet) { 1022248616Smm int64_t blocks = (archive_filter_bytes(a, 0) + 511) 1023228753Smm / 512; 1024228753Smm fprintf(stderr, "%lu %s\n", (unsigned long)blocks, 1025228753Smm blocks == 1 ? "block" : "blocks"); 1026228753Smm } 1027232153Smm archive_read_free(a); 1028232153Smm archive_write_free(ext); 1029228753Smm exit(cpio->return_value); 1030228753Smm} 1031228753Smm 1032228753Smm/* 1033228753Smm * Exits if there's a fatal error. Returns ARCHIVE_OK 1034228753Smm * if everything is kosher. 1035228753Smm */ 1036228753Smmstatic int 1037228753Smmextract_data(struct archive *ar, struct archive *aw) 1038228753Smm{ 1039228753Smm int r; 1040228753Smm size_t size; 1041228753Smm const void *block; 1042232153Smm int64_t offset; 1043228753Smm 1044228753Smm for (;;) { 1045228753Smm r = archive_read_data_block(ar, &block, &size, &offset); 1046228753Smm if (r == ARCHIVE_EOF) 1047228753Smm return (ARCHIVE_OK); 1048228753Smm if (r != ARCHIVE_OK) { 1049228753Smm lafe_warnc(archive_errno(ar), 1050228753Smm "%s", archive_error_string(ar)); 1051228753Smm exit(1); 1052228753Smm } 1053248616Smm r = (int)archive_write_data_block(aw, block, size, offset); 1054228753Smm if (r != ARCHIVE_OK) { 1055228753Smm lafe_warnc(archive_errno(aw), 1056228753Smm "%s", archive_error_string(aw)); 1057228753Smm return (r); 1058228753Smm } 1059228753Smm } 1060228753Smm} 1061228753Smm 1062228753Smmstatic void 1063228753Smmmode_list(struct cpio *cpio) 1064228753Smm{ 1065228753Smm struct archive *a; 1066228753Smm struct archive_entry *entry; 1067228753Smm int r; 1068228753Smm 1069228753Smm a = archive_read_new(); 1070228753Smm if (a == NULL) 1071228753Smm lafe_errc(1, 0, "Couldn't allocate archive object"); 1072232153Smm archive_read_support_filter_all(a); 1073228753Smm archive_read_support_format_all(a); 1074299529Smm if (cpio->passphrase != NULL) 1075299529Smm r = archive_read_add_passphrase(a, cpio->passphrase); 1076299529Smm else 1077299529Smm r = archive_read_set_passphrase_callback(a, cpio, 1078299529Smm &passphrase_callback); 1079299529Smm if (r != ARCHIVE_OK) 1080299529Smm lafe_errc(1, 0, "%s", archive_error_string(a)); 1081228753Smm 1082248616Smm if (archive_read_open_filename(a, cpio->filename, 1083248616Smm cpio->bytes_per_block)) 1084228753Smm lafe_errc(1, archive_errno(a), 1085228753Smm "%s", archive_error_string(a)); 1086228753Smm for (;;) { 1087228753Smm r = archive_read_next_header(a, &entry); 1088228753Smm if (r == ARCHIVE_EOF) 1089228753Smm break; 1090228753Smm if (r != ARCHIVE_OK) { 1091228753Smm lafe_errc(1, archive_errno(a), 1092228753Smm "%s", archive_error_string(a)); 1093228753Smm } 1094238856Smm if (archive_match_path_excluded(cpio->matching, entry)) 1095228753Smm continue; 1096228753Smm if (cpio->verbose) 1097228753Smm list_item_verbose(cpio, entry); 1098228753Smm else 1099228753Smm fprintf(stdout, "%s\n", archive_entry_pathname(entry)); 1100228753Smm } 1101228753Smm r = archive_read_close(a); 1102228753Smm if (r != ARCHIVE_OK) 1103228753Smm lafe_errc(1, 0, "%s", archive_error_string(a)); 1104228753Smm if (!cpio->quiet) { 1105248616Smm int64_t blocks = (archive_filter_bytes(a, 0) + 511) 1106228753Smm / 512; 1107228753Smm fprintf(stderr, "%lu %s\n", (unsigned long)blocks, 1108228753Smm blocks == 1 ? "block" : "blocks"); 1109228753Smm } 1110232153Smm archive_read_free(a); 1111228753Smm exit(0); 1112228753Smm} 1113228753Smm 1114228753Smm/* 1115228753Smm * Display information about the current file. 1116228753Smm * 1117228753Smm * The format here roughly duplicates the output of 'ls -l'. 1118228753Smm * This is based on SUSv2, where 'tar tv' is documented as 1119228753Smm * listing additional information in an "unspecified format," 1120228753Smm * and 'pax -l' is documented as using the same format as 'ls -l'. 1121228753Smm */ 1122228753Smmstatic void 1123228753Smmlist_item_verbose(struct cpio *cpio, struct archive_entry *entry) 1124228753Smm{ 1125228753Smm char size[32]; 1126228753Smm char date[32]; 1127228753Smm char uids[16], gids[16]; 1128228753Smm const char *uname, *gname; 1129228753Smm FILE *out = stdout; 1130228753Smm const char *fmt; 1131228753Smm time_t mtime; 1132228753Smm static time_t now; 1133228753Smm 1134228753Smm if (!now) 1135228753Smm time(&now); 1136228753Smm 1137228753Smm if (cpio->option_numeric_uid_gid) { 1138228753Smm /* Format numeric uid/gid for display. */ 1139228753Smm strcpy(uids, cpio_i64toa(archive_entry_uid(entry))); 1140228753Smm uname = uids; 1141228753Smm strcpy(gids, cpio_i64toa(archive_entry_gid(entry))); 1142228753Smm gname = gids; 1143228753Smm } else { 1144228753Smm /* Use uname if it's present, else lookup name from uid. */ 1145228753Smm uname = archive_entry_uname(entry); 1146228753Smm if (uname == NULL) 1147232153Smm uname = lookup_uname(cpio, (uid_t)archive_entry_uid(entry)); 1148228753Smm /* Use gname if it's present, else lookup name from gid. */ 1149228753Smm gname = archive_entry_gname(entry); 1150228753Smm if (gname == NULL) 1151232153Smm gname = lookup_gname(cpio, (uid_t)archive_entry_gid(entry)); 1152228753Smm } 1153228753Smm 1154228753Smm /* Print device number or file size. */ 1155228753Smm if (archive_entry_filetype(entry) == AE_IFCHR 1156228753Smm || archive_entry_filetype(entry) == AE_IFBLK) { 1157228753Smm snprintf(size, sizeof(size), "%lu,%lu", 1158228753Smm (unsigned long)archive_entry_rdevmajor(entry), 1159228753Smm (unsigned long)archive_entry_rdevminor(entry)); 1160228753Smm } else { 1161228753Smm strcpy(size, cpio_i64toa(archive_entry_size(entry))); 1162228753Smm } 1163228753Smm 1164228753Smm /* Format the time using 'ls -l' conventions. */ 1165228753Smm mtime = archive_entry_mtime(entry); 1166228753Smm#if defined(_WIN32) && !defined(__CYGWIN__) 1167228753Smm /* Windows' strftime function does not support %e format. */ 1168228753Smm if (mtime - now > 365*86400/2 1169228753Smm || mtime - now < -365*86400/2) 1170228753Smm fmt = cpio->day_first ? "%d %b %Y" : "%b %d %Y"; 1171228753Smm else 1172228753Smm fmt = cpio->day_first ? "%d %b %H:%M" : "%b %d %H:%M"; 1173228753Smm#else 1174274846Sdim if (mtime - now > 365*86400/2 1175274846Sdim || mtime - now < -365*86400/2) 1176228753Smm fmt = cpio->day_first ? "%e %b %Y" : "%b %e %Y"; 1177228753Smm else 1178228753Smm fmt = cpio->day_first ? "%e %b %H:%M" : "%b %e %H:%M"; 1179228753Smm#endif 1180228753Smm strftime(date, sizeof(date), fmt, localtime(&mtime)); 1181228753Smm 1182228753Smm fprintf(out, "%s%3d %-8s %-8s %8s %12s %s", 1183228753Smm archive_entry_strmode(entry), 1184228753Smm archive_entry_nlink(entry), 1185228753Smm uname, gname, size, date, 1186228753Smm archive_entry_pathname(entry)); 1187228753Smm 1188228753Smm /* Extra information for links. */ 1189228753Smm if (archive_entry_hardlink(entry)) /* Hard link */ 1190228753Smm fprintf(out, " link to %s", archive_entry_hardlink(entry)); 1191228753Smm else if (archive_entry_symlink(entry)) /* Symbolic link */ 1192228753Smm fprintf(out, " -> %s", archive_entry_symlink(entry)); 1193228753Smm fprintf(out, "\n"); 1194228753Smm} 1195228753Smm 1196228753Smmstatic void 1197228753Smmmode_pass(struct cpio *cpio, const char *destdir) 1198228753Smm{ 1199228753Smm struct lafe_line_reader *lr; 1200228753Smm const char *p; 1201228753Smm int r; 1202318482Smm size_t destdir_len; 1203228753Smm 1204228753Smm /* Ensure target dir has a trailing '/' to simplify path surgery. */ 1205318482Smm destdir_len = strlen(destdir); 1206318482Smm cpio->destdir = malloc(destdir_len + 8); 1207318482Smm memcpy(cpio->destdir, destdir, destdir_len); 1208318482Smm if (destdir_len == 0 || destdir[destdir_len - 1] != '/') 1209318482Smm cpio->destdir[destdir_len++] = '/'; 1210318482Smm cpio->destdir[destdir_len++] = '\0'; 1211228753Smm 1212228753Smm cpio->archive = archive_write_disk_new(); 1213228753Smm if (cpio->archive == NULL) 1214228753Smm lafe_errc(1, 0, "Failed to allocate archive object"); 1215228753Smm r = archive_write_disk_set_options(cpio->archive, cpio->extract_flags); 1216228753Smm if (r != ARCHIVE_OK) 1217228753Smm lafe_errc(1, 0, "%s", archive_error_string(cpio->archive)); 1218228753Smm cpio->linkresolver = archive_entry_linkresolver_new(); 1219228753Smm archive_write_disk_set_standard_lookup(cpio->archive); 1220228753Smm 1221228753Smm cpio->archive_read_disk = archive_read_disk_new(); 1222228753Smm if (cpio->archive_read_disk == NULL) 1223228753Smm lafe_errc(1, 0, "Failed to allocate archive object"); 1224228753Smm if (cpio->option_follow_links) 1225228753Smm archive_read_disk_set_symlink_logical(cpio->archive_read_disk); 1226228753Smm else 1227228753Smm archive_read_disk_set_symlink_physical(cpio->archive_read_disk); 1228228753Smm archive_read_disk_set_standard_lookup(cpio->archive_read_disk); 1229228753Smm 1230228753Smm lr = lafe_line_reader("-", cpio->option_null); 1231228753Smm while ((p = lafe_line_reader_next(lr)) != NULL) 1232228753Smm file_to_archive(cpio, p); 1233228753Smm lafe_line_reader_free(lr); 1234228753Smm 1235228753Smm archive_entry_linkresolver_free(cpio->linkresolver); 1236228753Smm r = archive_write_close(cpio->archive); 1237232153Smm if (cpio->dot) 1238232153Smm fprintf(stderr, "\n"); 1239228753Smm if (r != ARCHIVE_OK) 1240228753Smm lafe_errc(1, 0, "%s", archive_error_string(cpio->archive)); 1241228753Smm 1242228753Smm if (!cpio->quiet) { 1243228753Smm int64_t blocks = 1244248616Smm (archive_filter_bytes(cpio->archive, 0) + 511) 1245228753Smm / 512; 1246228753Smm fprintf(stderr, "%lu %s\n", (unsigned long)blocks, 1247228753Smm blocks == 1 ? "block" : "blocks"); 1248228753Smm } 1249228753Smm 1250232153Smm archive_write_free(cpio->archive); 1251318482Smm free(cpio->pass_destpath); 1252228753Smm} 1253228753Smm 1254228753Smm/* 1255228753Smm * Prompt for a new name for this entry. Returns a pointer to the 1256228753Smm * new name or NULL if the entry should not be copied. This 1257228753Smm * implements the semantics defined in POSIX.1-1996, which specifies 1258228753Smm * that an input of '.' means the name should be unchanged. GNU cpio 1259228753Smm * treats '.' as a literal new name. 1260228753Smm */ 1261228753Smmstatic const char * 1262228753Smmcpio_rename(const char *name) 1263228753Smm{ 1264228753Smm static char buff[1024]; 1265228753Smm FILE *t; 1266228753Smm char *p, *ret; 1267232153Smm#if defined(_WIN32) && !defined(__CYGWIN__) 1268232153Smm FILE *to; 1269228753Smm 1270232153Smm t = fopen("CONIN$", "r"); 1271232153Smm if (t == NULL) 1272232153Smm return (name); 1273232153Smm to = fopen("CONOUT$", "w"); 1274299529Smm if (to == NULL) { 1275299529Smm fclose(t); 1276232153Smm return (name); 1277299529Smm } 1278232153Smm fprintf(to, "%s (Enter/./(new name))? ", name); 1279232153Smm fclose(to); 1280232153Smm#else 1281228753Smm t = fopen("/dev/tty", "r+"); 1282228753Smm if (t == NULL) 1283228753Smm return (name); 1284228753Smm fprintf(t, "%s (Enter/./(new name))? ", name); 1285228753Smm fflush(t); 1286232153Smm#endif 1287228753Smm 1288228753Smm p = fgets(buff, sizeof(buff), t); 1289228753Smm fclose(t); 1290228753Smm if (p == NULL) 1291228753Smm /* End-of-file is a blank line. */ 1292228753Smm return (NULL); 1293228753Smm 1294228753Smm while (*p == ' ' || *p == '\t') 1295228753Smm ++p; 1296228753Smm if (*p == '\n' || *p == '\0') 1297228753Smm /* Empty line. */ 1298228753Smm return (NULL); 1299228753Smm if (*p == '.' && p[1] == '\n') 1300228753Smm /* Single period preserves original name. */ 1301228753Smm return (name); 1302228753Smm ret = p; 1303228753Smm /* Trim the final newline. */ 1304228753Smm while (*p != '\0' && *p != '\n') 1305228753Smm ++p; 1306228753Smm /* Overwrite the final \n with a null character. */ 1307228753Smm *p = '\0'; 1308228753Smm return (ret); 1309228753Smm} 1310228753Smm 1311228753Smmstatic void 1312228753Smmfree_cache(struct name_cache *cache) 1313228753Smm{ 1314228753Smm size_t i; 1315228753Smm 1316228753Smm if (cache != NULL) { 1317228753Smm for (i = 0; i < cache->size; i++) 1318228753Smm free(cache->cache[i].name); 1319228753Smm free(cache); 1320228753Smm } 1321228753Smm} 1322228753Smm 1323228753Smm/* 1324228753Smm * Lookup uname/gname from uid/gid, return NULL if no match. 1325228753Smm */ 1326228753Smmstatic const char * 1327228753Smmlookup_name(struct cpio *cpio, struct name_cache **name_cache_variable, 1328228753Smm int (*lookup_fn)(struct cpio *, const char **, id_t), id_t id) 1329228753Smm{ 1330228753Smm char asnum[16]; 1331228753Smm struct name_cache *cache; 1332228753Smm const char *name; 1333228753Smm int slot; 1334228753Smm 1335228753Smm 1336228753Smm if (*name_cache_variable == NULL) { 1337311041Smm *name_cache_variable = calloc(1, sizeof(struct name_cache)); 1338228753Smm if (*name_cache_variable == NULL) 1339228753Smm lafe_errc(1, ENOMEM, "No more memory"); 1340228753Smm (*name_cache_variable)->size = name_cache_size; 1341228753Smm } 1342228753Smm 1343228753Smm cache = *name_cache_variable; 1344228753Smm cache->probes++; 1345228753Smm 1346228753Smm slot = id % cache->size; 1347228753Smm if (cache->cache[slot].name != NULL) { 1348228753Smm if (cache->cache[slot].id == id) { 1349228753Smm cache->hits++; 1350228753Smm return (cache->cache[slot].name); 1351228753Smm } 1352228753Smm free(cache->cache[slot].name); 1353228753Smm cache->cache[slot].name = NULL; 1354228753Smm } 1355228753Smm 1356316337Smm if (lookup_fn(cpio, &name, id)) { 1357316337Smm /* If lookup failed, format it as a number. */ 1358316337Smm snprintf(asnum, sizeof(asnum), "%u", (unsigned)id); 1359316337Smm name = asnum; 1360228753Smm } 1361316337Smm 1362316337Smm cache->cache[slot].name = strdup(name); 1363316337Smm if (cache->cache[slot].name != NULL) { 1364316337Smm cache->cache[slot].id = id; 1365316337Smm return (cache->cache[slot].name); 1366316337Smm } 1367316337Smm 1368316337Smm /* 1369316337Smm * Conveniently, NULL marks an empty slot, so 1370316337Smm * if the strdup() fails, we've just failed to 1371316337Smm * cache it. No recovery necessary. 1372316337Smm */ 1373228753Smm return (NULL); 1374228753Smm} 1375228753Smm 1376228753Smmstatic const char * 1377228753Smmlookup_uname(struct cpio *cpio, uid_t uid) 1378228753Smm{ 1379228753Smm return (lookup_name(cpio, &cpio->uname_cache, 1380228753Smm &lookup_uname_helper, (id_t)uid)); 1381228753Smm} 1382228753Smm 1383228753Smmstatic int 1384228753Smmlookup_uname_helper(struct cpio *cpio, const char **name, id_t id) 1385228753Smm{ 1386228753Smm struct passwd *pwent; 1387228753Smm 1388228753Smm (void)cpio; /* UNUSED */ 1389228753Smm 1390228753Smm errno = 0; 1391228753Smm pwent = getpwuid((uid_t)id); 1392228753Smm if (pwent == NULL) { 1393316337Smm if (errno && errno != ENOENT) 1394238856Smm lafe_warnc(errno, "getpwuid(%s) failed", 1395238856Smm cpio_i64toa((int64_t)id)); 1396316337Smm return 1; 1397228753Smm } 1398228753Smm 1399228753Smm *name = pwent->pw_name; 1400316337Smm return 0; 1401228753Smm} 1402228753Smm 1403228753Smmstatic const char * 1404228753Smmlookup_gname(struct cpio *cpio, gid_t gid) 1405228753Smm{ 1406228753Smm return (lookup_name(cpio, &cpio->gname_cache, 1407228753Smm &lookup_gname_helper, (id_t)gid)); 1408228753Smm} 1409228753Smm 1410228753Smmstatic int 1411228753Smmlookup_gname_helper(struct cpio *cpio, const char **name, id_t id) 1412228753Smm{ 1413228753Smm struct group *grent; 1414228753Smm 1415228753Smm (void)cpio; /* UNUSED */ 1416228753Smm 1417228753Smm errno = 0; 1418228753Smm grent = getgrgid((gid_t)id); 1419228753Smm if (grent == NULL) { 1420316337Smm if (errno && errno != ENOENT) 1421238856Smm lafe_warnc(errno, "getgrgid(%s) failed", 1422238856Smm cpio_i64toa((int64_t)id)); 1423316337Smm return 1; 1424228753Smm } 1425228753Smm 1426228753Smm *name = grent->gr_name; 1427316337Smm return 0; 1428228753Smm} 1429228753Smm 1430228753Smm/* 1431228753Smm * It would be nice to just use printf() for formatting large numbers, 1432228753Smm * but the compatibility problems are a big headache. Hence the 1433228753Smm * following simple utility function. 1434228753Smm */ 1435228753Smmconst char * 1436228753Smmcpio_i64toa(int64_t n0) 1437228753Smm{ 1438232153Smm /* 2^64 =~ 1.8 * 10^19, so 20 decimal digits suffice. 1439232153Smm * We also need 1 byte for '-' and 1 for '\0'. 1440232153Smm */ 1441228753Smm static char buff[22]; 1442228753Smm int64_t n = n0 < 0 ? -n0 : n0; 1443228753Smm char *p = buff + sizeof(buff); 1444228753Smm 1445228753Smm *--p = '\0'; 1446228753Smm do { 1447228753Smm *--p = '0' + (int)(n % 10); 1448228753Smm n /= 10; 1449228753Smm } while (n > 0); 1450228753Smm if (n0 < 0) 1451228753Smm *--p = '-'; 1452228753Smm return p; 1453228753Smm} 1454299529Smm 1455299529Smm#define PPBUFF_SIZE 1024 1456299529Smmstatic const char * 1457299529Smmpassphrase_callback(struct archive *a, void *_client_data) 1458299529Smm{ 1459299529Smm struct cpio *cpio = (struct cpio *)_client_data; 1460299529Smm (void)a; /* UNUSED */ 1461299529Smm 1462299529Smm if (cpio->ppbuff == NULL) { 1463299529Smm cpio->ppbuff = malloc(PPBUFF_SIZE); 1464299529Smm if (cpio->ppbuff == NULL) 1465299529Smm lafe_errc(1, errno, "Out of memory"); 1466299529Smm } 1467299529Smm return lafe_readpassphrase("Enter passphrase:", 1468299529Smm cpio->ppbuff, PPBUFF_SIZE); 1469299529Smm} 1470299529Smm 1471299529Smmstatic void 1472299529Smmpassphrase_free(char *ppbuff) 1473299529Smm{ 1474299529Smm if (ppbuff != NULL) { 1475299529Smm memset(ppbuff, 0, PPBUFF_SIZE); 1476299529Smm free(ppbuff); 1477299529Smm } 1478299529Smm} 1479