diff options
Diffstat (limited to 'src/libs/3rdparty/libarchive/archive_write_set_format_cpio_newc.c')
-rw-r--r-- | src/libs/3rdparty/libarchive/archive_write_set_format_cpio_newc.c | 457 |
1 files changed, 457 insertions, 0 deletions
diff --git a/src/libs/3rdparty/libarchive/archive_write_set_format_cpio_newc.c b/src/libs/3rdparty/libarchive/archive_write_set_format_cpio_newc.c new file mode 100644 index 000000000..f0f39809d --- /dev/null +++ b/src/libs/3rdparty/libarchive/archive_write_set_format_cpio_newc.c @@ -0,0 +1,457 @@ +/*- + * Copyright (c) 2003-2007 Tim Kientzle + * Copyright (c) 2006 Rudolf Marek SYSGO s.r.o. + * Copyright (c) 2011-2012 Michihiro NAKAJIMA + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include "archive_platform.h" +__FBSDID("$FreeBSD: head/lib/libarchive/archive_write_set_format_cpio_newc.c 201160 2009-12-29 05:41:57Z kientzle $"); + +#ifdef HAVE_ERRNO_H +#include <errno.h> +#endif +#include <stdio.h> +#ifdef HAVE_STDLIB_H +#include <stdlib.h> +#endif +#ifdef HAVE_STRING_H +#include <string.h> +#endif + +#include "archive.h" +#include "archive_entry.h" +#include "archive_entry_locale.h" +#include "archive_private.h" +#include "archive_write_private.h" +#include "archive_write_set_format_private.h" + +static ssize_t archive_write_newc_data(struct archive_write *, + const void *buff, size_t s); +static int archive_write_newc_close(struct archive_write *); +static int archive_write_newc_free(struct archive_write *); +static int archive_write_newc_finish_entry(struct archive_write *); +static int archive_write_newc_header(struct archive_write *, + struct archive_entry *); +static int archive_write_newc_options(struct archive_write *, + const char *, const char *); +static int format_hex(int64_t, void *, int); +static int64_t format_hex_recursive(int64_t, char *, int); +static int write_header(struct archive_write *, struct archive_entry *); + +struct cpio { + uint64_t entry_bytes_remaining; + int padding; + + struct archive_string_conv *opt_sconv; + struct archive_string_conv *sconv_default; + int init_default_conversion; +}; + +#define c_magic_offset 0 +#define c_magic_size 6 +#define c_ino_offset 6 +#define c_ino_size 8 +#define c_mode_offset 14 +#define c_mode_size 8 +#define c_uid_offset 22 +#define c_uid_size 8 +#define c_gid_offset 30 +#define c_gid_size 8 +#define c_nlink_offset 38 +#define c_nlink_size 8 +#define c_mtime_offset 46 +#define c_mtime_size 8 +#define c_filesize_offset 54 +#define c_filesize_size 8 +#define c_devmajor_offset 62 +#define c_devmajor_size 8 +#define c_devminor_offset 70 +#define c_devminor_size 8 +#define c_rdevmajor_offset 78 +#define c_rdevmajor_size 8 +#define c_rdevminor_offset 86 +#define c_rdevminor_size 8 +#define c_namesize_offset 94 +#define c_namesize_size 8 +#define c_checksum_offset 102 +#define c_checksum_size 8 +#define c_header_size 110 + +/* Logic trick: difference between 'n' and next multiple of 4 */ +#define PAD4(n) (3 & (1 + ~(n))) + +/* + * Set output format to 'cpio' format. + */ +int +archive_write_set_format_cpio_newc(struct archive *_a) +{ + struct archive_write *a = (struct archive_write *)_a; + struct cpio *cpio; + + archive_check_magic(_a, ARCHIVE_WRITE_MAGIC, + ARCHIVE_STATE_NEW, "archive_write_set_format_cpio_newc"); + + /* If someone else was already registered, unregister them. */ + if (a->format_free != NULL) + (a->format_free)(a); + + cpio = (struct cpio *)calloc(1, sizeof(*cpio)); + if (cpio == NULL) { + archive_set_error(&a->archive, ENOMEM, "Can't allocate cpio data"); + return (ARCHIVE_FATAL); + } + a->format_data = cpio; + a->format_name = "cpio"; + a->format_options = archive_write_newc_options; + a->format_write_header = archive_write_newc_header; + a->format_write_data = archive_write_newc_data; + a->format_finish_entry = archive_write_newc_finish_entry; + a->format_close = archive_write_newc_close; + a->format_free = archive_write_newc_free; + a->archive.archive_format = ARCHIVE_FORMAT_CPIO_SVR4_NOCRC; + a->archive.archive_format_name = "SVR4 cpio nocrc"; + return (ARCHIVE_OK); +} + +static int +archive_write_newc_options(struct archive_write *a, const char *key, + const char *val) +{ + struct cpio *cpio = (struct cpio *)a->format_data; + int ret = ARCHIVE_FAILED; + + if (strcmp(key, "hdrcharset") == 0) { + if (val == NULL || val[0] == 0) + archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC, + "%s: hdrcharset option needs a character-set name", + a->format_name); + else { + cpio->opt_sconv = archive_string_conversion_to_charset( + &a->archive, val, 0); + if (cpio->opt_sconv != NULL) + ret = ARCHIVE_OK; + else + ret = ARCHIVE_FATAL; + } + return (ret); + } + + /* Note: The "warn" return is just to inform the options + * supervisor that we didn't handle it. It will generate + * a suitable error if no one used this option. */ + return (ARCHIVE_WARN); +} + +static struct archive_string_conv * +get_sconv(struct archive_write *a) +{ + struct cpio *cpio; + struct archive_string_conv *sconv; + + cpio = (struct cpio *)a->format_data; + sconv = cpio->opt_sconv; + if (sconv == NULL) { + if (!cpio->init_default_conversion) { + cpio->sconv_default = + archive_string_default_conversion_for_write( + &(a->archive)); + cpio->init_default_conversion = 1; + } + sconv = cpio->sconv_default; + } + return (sconv); +} + +static int +archive_write_newc_header(struct archive_write *a, struct archive_entry *entry) +{ + const char *path; + size_t len; + + if (archive_entry_filetype(entry) == 0 && archive_entry_hardlink(entry) == NULL) { + archive_set_error(&a->archive, -1, "Filetype required"); + return (ARCHIVE_FAILED); + } + + if (archive_entry_pathname_l(entry, &path, &len, get_sconv(a)) != 0 + && errno == ENOMEM) { + archive_set_error(&a->archive, ENOMEM, + "Can't allocate memory for Pathname"); + return (ARCHIVE_FATAL); + } + if (len == 0 || path == NULL || path[0] == '\0') { + archive_set_error(&a->archive, -1, "Pathname required"); + return (ARCHIVE_FAILED); + } + + if (archive_entry_hardlink(entry) == NULL + && (!archive_entry_size_is_set(entry) || archive_entry_size(entry) < 0)) { + archive_set_error(&a->archive, -1, "Size required"); + return (ARCHIVE_FAILED); + } + return write_header(a, entry); +} + +static int +write_header(struct archive_write *a, struct archive_entry *entry) +{ + int64_t ino; + struct cpio *cpio; + const char *p, *path; + int pathlength, ret, ret_final; + char h[c_header_size]; + struct archive_string_conv *sconv; + struct archive_entry *entry_main; + size_t len; + int pad; + + cpio = (struct cpio *)a->format_data; + ret_final = ARCHIVE_OK; + sconv = get_sconv(a); + +#if defined(_WIN32) && !defined(__CYGWIN__) + /* Make sure the path separators in pathname, hardlink and symlink + * are all slash '/', not the Windows path separator '\'. */ + entry_main = __la_win_entry_in_posix_pathseparator(entry); + if (entry_main == NULL) { + archive_set_error(&a->archive, ENOMEM, + "Can't allocate ustar data"); + return(ARCHIVE_FATAL); + } + if (entry != entry_main) + entry = entry_main; + else + entry_main = NULL; +#else + entry_main = NULL; +#endif + + ret = archive_entry_pathname_l(entry, &path, &len, sconv); + if (ret != 0) { + if (errno == ENOMEM) { + archive_set_error(&a->archive, ENOMEM, + "Can't allocate memory for Pathname"); + ret_final = ARCHIVE_FATAL; + goto exit_write_header; + } + archive_set_error(&a->archive, ARCHIVE_ERRNO_FILE_FORMAT, + "Can't translate pathname '%s' to %s", + archive_entry_pathname(entry), + archive_string_conversion_charset_name(sconv)); + ret_final = ARCHIVE_WARN; + } + pathlength = (int)len + 1; /* Include trailing null. */ + + memset(h, 0, c_header_size); + format_hex(0x070701, h + c_magic_offset, c_magic_size); + format_hex(archive_entry_devmajor(entry), h + c_devmajor_offset, + c_devmajor_size); + format_hex(archive_entry_devminor(entry), h + c_devminor_offset, + c_devminor_size); + + ino = archive_entry_ino64(entry); + if (ino > 0xffffffff) { + archive_set_error(&a->archive, ERANGE, + "large inode number truncated"); + ret_final = ARCHIVE_WARN; + } + + /* TODO: Set ret_final to ARCHIVE_WARN if any of these overflow. */ + format_hex(ino & 0xffffffff, h + c_ino_offset, c_ino_size); + format_hex(archive_entry_mode(entry), h + c_mode_offset, c_mode_size); + format_hex(archive_entry_uid(entry), h + c_uid_offset, c_uid_size); + format_hex(archive_entry_gid(entry), h + c_gid_offset, c_gid_size); + format_hex(archive_entry_nlink(entry), h + c_nlink_offset, c_nlink_size); + if (archive_entry_filetype(entry) == AE_IFBLK + || archive_entry_filetype(entry) == AE_IFCHR) { + format_hex(archive_entry_rdevmajor(entry), h + c_rdevmajor_offset, c_rdevmajor_size); + format_hex(archive_entry_rdevminor(entry), h + c_rdevminor_offset, c_rdevminor_size); + } else { + format_hex(0, h + c_rdevmajor_offset, c_rdevmajor_size); + format_hex(0, h + c_rdevminor_offset, c_rdevminor_size); + } + format_hex(archive_entry_mtime(entry), h + c_mtime_offset, c_mtime_size); + format_hex(pathlength, h + c_namesize_offset, c_namesize_size); + format_hex(0, h + c_checksum_offset, c_checksum_size); + + /* Non-regular files don't store bodies. */ + if (archive_entry_filetype(entry) != AE_IFREG) + archive_entry_set_size(entry, 0); + + /* Symlinks get the link written as the body of the entry. */ + ret = archive_entry_symlink_l(entry, &p, &len, sconv); + if (ret != 0) { + if (errno == ENOMEM) { + archive_set_error(&a->archive, ENOMEM, + "Can't allocate memory for Likname"); + ret_final = ARCHIVE_FATAL; + goto exit_write_header; + } + archive_set_error(&a->archive, ARCHIVE_ERRNO_FILE_FORMAT, + "Can't translate linkname '%s' to %s", + archive_entry_symlink(entry), + archive_string_conversion_charset_name(sconv)); + ret_final = ARCHIVE_WARN; + } + if (len > 0 && p != NULL && *p != '\0') + ret = format_hex(strlen(p), h + c_filesize_offset, + c_filesize_size); + else + ret = format_hex(archive_entry_size(entry), + h + c_filesize_offset, c_filesize_size); + if (ret) { + archive_set_error(&a->archive, ERANGE, + "File is too large for this format."); + ret_final = ARCHIVE_FAILED; + goto exit_write_header; + } + + ret = __archive_write_output(a, h, c_header_size); + if (ret != ARCHIVE_OK) { + ret_final = ARCHIVE_FATAL; + goto exit_write_header; + } + + /* Pad pathname to even length. */ + ret = __archive_write_output(a, path, pathlength); + if (ret != ARCHIVE_OK) { + ret_final = ARCHIVE_FATAL; + goto exit_write_header; + } + pad = PAD4(pathlength + c_header_size); + if (pad) { + ret = __archive_write_output(a, "\0\0\0", pad); + if (ret != ARCHIVE_OK) { + ret_final = ARCHIVE_FATAL; + goto exit_write_header; + } + } + + cpio->entry_bytes_remaining = archive_entry_size(entry); + cpio->padding = (int)PAD4(cpio->entry_bytes_remaining); + + /* Write the symlink now. */ + if (p != NULL && *p != '\0') { + ret = __archive_write_output(a, p, strlen(p)); + if (ret != ARCHIVE_OK) { + ret_final = ARCHIVE_FATAL; + goto exit_write_header; + } + pad = PAD4(strlen(p)); + ret = __archive_write_output(a, "\0\0\0", pad); + if (ret != ARCHIVE_OK) { + ret_final = ARCHIVE_FATAL; + goto exit_write_header; + } + } +exit_write_header: + archive_entry_free(entry_main); + return (ret_final); +} + +static ssize_t +archive_write_newc_data(struct archive_write *a, const void *buff, size_t s) +{ + struct cpio *cpio; + int ret; + + cpio = (struct cpio *)a->format_data; + if (s > cpio->entry_bytes_remaining) + s = (size_t)cpio->entry_bytes_remaining; + + ret = __archive_write_output(a, buff, s); + cpio->entry_bytes_remaining -= s; + if (ret >= 0) + return (s); + else + return (ret); +} + +/* + * Format a number into the specified field. + */ +static int +format_hex(int64_t v, void *p, int digits) +{ + int64_t max; + int ret; + + max = (((int64_t)1) << (digits * 4)) - 1; + if (v >= 0 && v <= max) { + format_hex_recursive(v, (char *)p, digits); + ret = 0; + } else { + format_hex_recursive(max, (char *)p, digits); + ret = -1; + } + return (ret); +} + +static int64_t +format_hex_recursive(int64_t v, char *p, int s) +{ + if (s == 0) + return (v); + v = format_hex_recursive(v, p+1, s-1); + *p = "0123456789abcdef"[v & 0xf]; + return (v >> 4); +} + +static int +archive_write_newc_close(struct archive_write *a) +{ + int er; + struct archive_entry *trailer; + + trailer = archive_entry_new(); + archive_entry_set_nlink(trailer, 1); + archive_entry_set_size(trailer, 0); + archive_entry_set_pathname(trailer, "TRAILER!!!"); + /* Bypass the required data checks. */ + er = write_header(a, trailer); + archive_entry_free(trailer); + return (er); +} + +static int +archive_write_newc_free(struct archive_write *a) +{ + struct cpio *cpio; + + cpio = (struct cpio *)a->format_data; + free(cpio); + a->format_data = NULL; + return (ARCHIVE_OK); +} + +static int +archive_write_newc_finish_entry(struct archive_write *a) +{ + struct cpio *cpio; + + cpio = (struct cpio *)a->format_data; + return (__archive_write_nulls(a, + (size_t)cpio->entry_bytes_remaining + cpio->padding)); +} |