static int
archive_write_gnutar_header(struct archive_write *a,
struct archive_entry *entry)
{
char buff[512];
int r, ret, ret2 = ARCHIVE_OK;
int tartype;
struct gnutar *gnutar;
struct archive_string_conv *sconv;
struct archive_entry *entry_main;
gnutar = (struct gnutar *)a->format_data;
/* Setup default string conversion. */
if (gnutar->opt_sconv == NULL) {
if (!gnutar->init_default_conversion) {
gnutar->sconv_default =
archive_string_default_conversion_for_write(
&(a->archive));
gnutar->init_default_conversion = 1;
}
sconv = gnutar->sconv_default;
} else
sconv = gnutar->opt_sconv;
/* Only regular files (not hardlinks) have data. */
if (archive_entry_hardlink(entry) != NULL ||
archive_entry_symlink(entry) != NULL ||
!(archive_entry_filetype(entry) == AE_IFREG))
archive_entry_set_size(entry, 0);
if (AE_IFDIR == archive_entry_filetype(entry)) {
const char *p;
size_t path_length;
/*
* Ensure a trailing '/'. Modify the entry so
* the client sees the change.
*/
#if defined(_WIN32) && !defined(__CYGWIN__)
const wchar_t *wp;
wp = archive_entry_pathname_w(entry);
if (wp != NULL && wp[wcslen(wp) -1] != L'/') {
struct archive_wstring ws;
archive_string_init(&ws);
path_length = wcslen(wp);
if (archive_wstring_ensure(&ws,
path_length + 2) == NULL) {
archive_set_error(&a->archive, ENOMEM,
"Can't allocate ustar data");
archive_wstring_free(&ws);
return(ARCHIVE_FATAL);
}
/* Should we keep '\' ? */
if (wp[path_length -1] == L'\\')
path_length--;
archive_wstrncpy(&ws, wp, path_length);
archive_wstrappend_wchar(&ws, L'/');
archive_entry_copy_pathname_w(entry, ws.s);
archive_wstring_free(&ws);
p = NULL;
} else
#endif
p = archive_entry_pathname(entry);
/*
* On Windows, this is a backup operation just in
* case getting WCS failed. On POSIX, this is a
* normal operation.
*/
if (p != NULL && p[0] != '\0' && p[strlen(p) - 1] != '/') {
struct archive_string as;
archive_string_init(&as);
path_length = strlen(p);
if (archive_string_ensure(&as,
path_length + 2) == NULL) {
archive_set_error(&a->archive, ENOMEM,
"Can't allocate ustar data");
archive_string_free(&as);
return(ARCHIVE_FATAL);
}
#if defined(_WIN32) && !defined(__CYGWIN__)
/* NOTE: This might break the pathname
* if the current code page is CP932 and
* the pathname includes a character '\'
* as a part of its multibyte pathname. */
if (p[strlen(p) -1] == '\\')
path_length--;
else
#endif
archive_strncpy(&as, p, path_length);
archive_strappend_char(&as, '/');
archive_entry_copy_pathname(entry, as.s);
archive_string_free(&as);
}
}
#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
r = archive_entry_pathname_l(entry, &(gnutar->pathname),
&(gnutar->pathname_length), sconv);
if (r != 0) {
if (errno == ENOMEM) {
archive_set_error(&a->archive, ENOMEM,
"Can't allocate memory for Pathame");
ret = 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));
ret2 = ARCHIVE_WARN;
}
r = archive_entry_uname_l(entry, &(gnutar->uname),
&(gnutar->uname_length), sconv);
if (r != 0) {
if (errno == ENOMEM) {
archive_set_error(&a->archive, ENOMEM,
"Can't allocate memory for Uname");
ret = ARCHIVE_FATAL;
goto exit_write_header;
}
archive_set_error(&a->archive,
ARCHIVE_ERRNO_FILE_FORMAT,
"Can't translate uname '%s' to %s",
archive_entry_uname(entry),
archive_string_conversion_charset_name(sconv));
ret2 = ARCHIVE_WARN;
}
r = archive_entry_gname_l(entry, &(gnutar->gname),
&(gnutar->gname_length), sconv);
if (r != 0) {
if (errno == ENOMEM) {
archive_set_error(&a->archive, ENOMEM,
"Can't allocate memory for Gname");
ret = ARCHIVE_FATAL;
goto exit_write_header;
}
archive_set_error(&a->archive,
ARCHIVE_ERRNO_FILE_FORMAT,
"Can't translate gname '%s' to %s",
archive_entry_gname(entry),
archive_string_conversion_charset_name(sconv));
ret2 = ARCHIVE_WARN;
}
/* If linkname is longer than 100 chars we need to add a 'K' header. */
r = archive_entry_hardlink_l(entry, &(gnutar->linkname),
&(gnutar->linkname_length), sconv);
if (r != 0) {
if (errno == ENOMEM) {
archive_set_error(&a->archive, ENOMEM,
"Can't allocate memory for Linkname");
ret = ARCHIVE_FATAL;
goto exit_write_header;
}
archive_set_error(&a->archive,
ARCHIVE_ERRNO_FILE_FORMAT,
"Can't translate linkname '%s' to %s",
archive_entry_hardlink(entry),
archive_string_conversion_charset_name(sconv));
ret2 = ARCHIVE_WARN;
}
if (gnutar->linkname_length == 0) {
r = archive_entry_symlink_l(entry, &(gnutar->linkname),
&(gnutar->linkname_length), sconv);
if (r != 0) {
if (errno == ENOMEM) {
archive_set_error(&a->archive, ENOMEM,
"Can't allocate memory for Linkname");
ret = ARCHIVE_FATAL;
goto exit_write_header;
}
archive_set_error(&a->archive,
ARCHIVE_ERRNO_FILE_FORMAT,
"Can't translate linkname '%s' to %s",
archive_entry_hardlink(entry),
archive_string_conversion_charset_name(sconv));
ret2 = ARCHIVE_WARN;
}
}
if (gnutar->linkname_length > GNUTAR_linkname_size) {
size_t length = gnutar->linkname_length + 1;
struct archive_entry *temp = archive_entry_new2(&a->archive);
/* Uname/gname here don't really matter since no one reads them;
* these are the values that GNU tar happens to use on FreeBSD. */
archive_entry_set_uname(temp, "root");
archive_entry_set_gname(temp, "wheel");
archive_entry_set_pathname(temp, "././@LongLink");
archive_entry_set_size(temp, length);
ret = archive_format_gnutar_header(a, buff, temp, 'K');
archive_entry_free(temp);
if (ret < ARCHIVE_WARN)
goto exit_write_header;
ret = __archive_write_output(a, buff, 512);
if (ret < ARCHIVE_WARN)
goto exit_write_header;
/* Write name and trailing null byte. */
ret = __archive_write_output(a, gnutar->linkname, length);
if (ret < ARCHIVE_WARN)
goto exit_write_header;
/* Pad to 512 bytes */
ret = __archive_write_nulls(a, 0x1ff & (-(ssize_t)length));
if (ret < ARCHIVE_WARN)
goto exit_write_header;
}
/* If pathname is longer than 100 chars we need to add an 'L' header. */
if (gnutar->pathname_length > GNUTAR_name_size) {
const char *pathname = gnutar->pathname;
size_t length = gnutar->pathname_length + 1;
struct archive_entry *temp = archive_entry_new2(&a->archive);
/* Uname/gname here don't really matter since no one reads them;
* these are the values that GNU tar happens to use on FreeBSD. */
archive_entry_set_uname(temp, "root");
archive_entry_set_gname(temp, "wheel");
archive_entry_set_pathname(temp, "././@LongLink");
archive_entry_set_size(temp, length);
ret = archive_format_gnutar_header(a, buff, temp, 'L');
archive_entry_free(temp);
if (ret < ARCHIVE_WARN)
goto exit_write_header;
ret = __archive_write_output(a, buff, 512);
if(ret < ARCHIVE_WARN)
goto exit_write_header;
/* Write pathname + trailing null byte. */
ret = __archive_write_output(a, pathname, length);
if(ret < ARCHIVE_WARN)
goto exit_write_header;
/* Pad to multiple of 512 bytes. */
ret = __archive_write_nulls(a, 0x1ff & (-(ssize_t)length));
if (ret < ARCHIVE_WARN)
goto exit_write_header;
}
if (archive_entry_hardlink(entry) != NULL) {
tartype = '1';
} else
switch (archive_entry_filetype(entry)) {
case AE_IFREG: tartype = '0' ; break;
case AE_IFLNK: tartype = '2' ; break;
case AE_IFCHR: tartype = '3' ; break;
case AE_IFBLK: tartype = '4' ; break;
case AE_IFDIR: tartype = '5' ; break;
case AE_IFIFO: tartype = '6' ; break;
case AE_IFSOCK:
archive_set_error(&a->archive,
ARCHIVE_ERRNO_FILE_FORMAT,
"tar format cannot archive socket");
ret = ARCHIVE_FAILED;
goto exit_write_header;
default:
archive_set_error(&a->archive,
ARCHIVE_ERRNO_FILE_FORMAT,
"tar format cannot archive this (mode=0%lo)",
(unsigned long)archive_entry_mode(entry));
ret = ARCHIVE_FAILED;
goto exit_write_header;
}
ret = archive_format_gnutar_header(a, buff, entry, tartype);
if (ret < ARCHIVE_WARN)
goto exit_write_header;
if (ret2 < ret)
ret = ret2;
ret2 = __archive_write_output(a, buff, 512);
if (ret2 < ARCHIVE_WARN) {
ret = ret2;
goto exit_write_header;
}
if (ret2 < ret)
ret = ret2;
gnutar->entry_bytes_remaining = archive_entry_size(entry);
gnutar->entry_padding = 0x1ff & (-(int64_t)gnutar->entry_bytes_remaining);
exit_write_header:
archive_entry_free(entry_main);
return (ret);
}
/*
* Do not use Windows tmpfile() function.
* It will make a temporary file under the root directory
* and it'll cause permission error if a user who is
* non-Administrator creates temporary files.
* Also Windows version of mktemp family including _mktemp_s
* are not secure.
*/
int
__archive_mktemp(const char *tmpdir)
{
static const wchar_t *prefix = L"libarchive_";
static const wchar_t *suffix = L"XXXXXXXXXX";
static const wchar_t num[] = {
L'0', L'1', L'2', L'3', L'4', L'5', L'6', L'7',
L'8', L'9', L'A', L'B', L'C', L'D', L'E', L'F',
L'G', L'H', L'I', L'J', L'K', L'L', L'M', L'N',
L'O', L'P', L'Q', L'R', L'S', L'T', L'U', L'V',
L'W', L'X', L'Y', L'Z', L'a', L'b', L'c', L'd',
L'e', L'f', L'g', L'h', L'i', L'j', L'k', L'l',
L'm', L'n', L'o', L'p', L'q', L'r', L's', L't',
L'u', L'v', L'w', L'x', L'y', L'z'
};
HCRYPTPROV hProv;
struct archive_wstring temp_name;
wchar_t *ws;
DWORD attr;
wchar_t *xp, *ep;
int fd;
hProv = (HCRYPTPROV)NULL;
fd = -1;
ws = NULL;
archive_string_init(&temp_name);
/* Get a temporary directory. */
if (tmpdir == NULL) {
size_t l;
wchar_t *tmp;
l = GetTempPathW(0, NULL);
if (l == 0) {
la_dosmaperr(GetLastError());
goto exit_tmpfile;
}
tmp = malloc(l*sizeof(wchar_t));
if (tmp == NULL) {
errno = ENOMEM;
goto exit_tmpfile;
}
GetTempPathW((DWORD)l, tmp);
archive_wstrcpy(&temp_name, tmp);
free(tmp);
} else {
if (archive_wstring_append_from_mbs(&temp_name, tmpdir,
strlen(tmpdir)) < 0)
goto exit_tmpfile;
if (temp_name.s[temp_name.length-1] != L'/')
archive_wstrappend_wchar(&temp_name, L'/');
}
/* Check if temp_name is a directory. */
attr = GetFileAttributesW(temp_name.s);
if (attr == (DWORD)-1) {
if (GetLastError() != ERROR_FILE_NOT_FOUND) {
la_dosmaperr(GetLastError());
goto exit_tmpfile;
}
ws = __la_win_permissive_name_w(temp_name.s);
if (ws == NULL) {
errno = EINVAL;
goto exit_tmpfile;
}
attr = GetFileAttributesW(ws);
if (attr == (DWORD)-1) {
la_dosmaperr(GetLastError());
goto exit_tmpfile;
}
}
if (!(attr & FILE_ATTRIBUTE_DIRECTORY)) {
errno = ENOTDIR;
goto exit_tmpfile;
}
/*
* Create a temporary file.
*/
archive_wstrcat(&temp_name, prefix);
archive_wstrcat(&temp_name, suffix);
ep = temp_name.s + archive_strlen(&temp_name);
xp = ep - wcslen(suffix);
if (!CryptAcquireContext(&hProv, NULL, NULL, PROV_RSA_FULL,
CRYPT_VERIFYCONTEXT)) {
la_dosmaperr(GetLastError());
goto exit_tmpfile;
}
for (;;) {
wchar_t *p;
HANDLE h;
/* Generate a random file name through CryptGenRandom(). */
p = xp;
if (!CryptGenRandom(hProv, (DWORD)(ep - p)*sizeof(wchar_t),
(BYTE*)p)) {
la_dosmaperr(GetLastError());
goto exit_tmpfile;
}
for (; p < ep; p++)
*p = num[((DWORD)*p) % (sizeof(num)/sizeof(num[0]))];
free(ws);
ws = __la_win_permissive_name_w(temp_name.s);
if (ws == NULL) {
errno = EINVAL;
goto exit_tmpfile;
}
/* Specifies FILE_FLAG_DELETE_ON_CLOSE flag is to
* delete this temporary file immediately when this
* file closed. */
h = CreateFileW(ws,
GENERIC_READ | GENERIC_WRITE | DELETE,
0,/* Not share */
NULL,
CREATE_NEW,/* Create a new file only */
FILE_ATTRIBUTE_TEMPORARY | FILE_FLAG_DELETE_ON_CLOSE,
NULL);
if (h == INVALID_HANDLE_VALUE) {
/* The same file already exists. retry with
* a new filename. */
if (GetLastError() == ERROR_FILE_EXISTS)
continue;
/* Otherwise, fail creation temporary file. */
la_dosmaperr(GetLastError());
goto exit_tmpfile;
}
fd = _open_osfhandle((intptr_t)h, _O_BINARY | _O_RDWR);
if (fd == -1) {
CloseHandle(h);
goto exit_tmpfile;
} else
break;/* success! */
}
exit_tmpfile:
if (hProv != (HCRYPTPROV)NULL)
CryptReleaseContext(hProv, 0);
free(ws);
archive_wstring_free(&temp_name);
return (fd);
}
static int
archive_write_v7tar_header(struct archive_write *a, struct archive_entry *entry)
{
char buff[512];
int ret, ret2;
struct v7tar *v7tar;
struct archive_entry *entry_main;
struct archive_string_conv *sconv;
v7tar = (struct v7tar *)a->format_data;
/* Setup default string conversion. */
if (v7tar->opt_sconv == NULL) {
if (!v7tar->init_default_conversion) {
v7tar->sconv_default =
archive_string_default_conversion_for_write(
&(a->archive));
v7tar->init_default_conversion = 1;
}
sconv = v7tar->sconv_default;
} else
sconv = v7tar->opt_sconv;
/* Sanity check. */
if (archive_entry_pathname(entry) == NULL) {
archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
"Can't record entry in tar file without pathname");
return (ARCHIVE_FAILED);
}
/* Only regular files (not hardlinks) have data. */
if (archive_entry_hardlink(entry) != NULL ||
archive_entry_symlink(entry) != NULL ||
!(archive_entry_filetype(entry) == AE_IFREG))
archive_entry_set_size(entry, 0);
if (AE_IFDIR == archive_entry_filetype(entry)) {
const char *p;
size_t path_length;
/*
* Ensure a trailing '/'. Modify the entry so
* the client sees the change.
*/
#if defined(_WIN32) && !defined(__CYGWIN__)
const wchar_t *wp;
wp = archive_entry_pathname_w(entry);
if (wp != NULL && wp[wcslen(wp) -1] != L'/') {
struct archive_wstring ws;
archive_string_init(&ws);
path_length = wcslen(wp);
if (archive_wstring_ensure(&ws,
path_length + 2) == NULL) {
archive_set_error(&a->archive, ENOMEM,
"Can't allocate v7tar data");
archive_wstring_free(&ws);
return(ARCHIVE_FATAL);
}
/* Should we keep '\' ? */
if (wp[path_length -1] == L'\\')
path_length--;
archive_wstrncpy(&ws, wp, path_length);
archive_wstrappend_wchar(&ws, L'/');
archive_entry_copy_pathname_w(entry, ws.s);
archive_wstring_free(&ws);
p = NULL;
} else
#endif
p = archive_entry_pathname(entry);
/*
* On Windows, this is a backup operation just in
* case getting WCS failed. On POSIX, this is a
* normal operation.
*/
if (p != NULL && p[strlen(p) - 1] != '/') {
struct archive_string as;
archive_string_init(&as);
path_length = strlen(p);
if (archive_string_ensure(&as,
path_length + 2) == NULL) {
archive_set_error(&a->archive, ENOMEM,
"Can't allocate v7tar data");
archive_string_free(&as);
return(ARCHIVE_FATAL);
}
#if defined(_WIN32) && !defined(__CYGWIN__)
/* NOTE: This might break the pathname
* if the current code page is CP932 and
* the pathname includes a character '\'
* as a part of its multibyte pathname. */
if (p[strlen(p) -1] == '\\')
path_length--;
else
#endif
archive_strncpy(&as, p, path_length);
archive_strappend_char(&as, '/');
archive_entry_copy_pathname(entry, as.s);
archive_string_free(&as);
}
}
#if defined(_WIN32) && !defined(__CYGWIN__)
/* Make sure the path separators in pahtname, 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 v7tar data");
return(ARCHIVE_FATAL);
}
if (entry != entry_main)
entry = entry_main;
else
entry_main = NULL;
#else
entry_main = NULL;
#endif
ret = format_header_v7tar(a, buff, entry, 1, sconv);
if (ret < ARCHIVE_WARN) {
if (entry_main)
archive_entry_free(entry_main);
return (ret);
}
ret2 = __archive_write_output(a, buff, 512);
if (ret2 < ARCHIVE_WARN) {
if (entry_main)
archive_entry_free(entry_main);
return (ret2);
}
if (ret2 < ret)
ret = ret2;
v7tar->entry_bytes_remaining = archive_entry_size(entry);
v7tar->entry_padding = 0x1ff & (-(int64_t)v7tar->entry_bytes_remaining);
if (entry_main)
archive_entry_free(entry_main);
return (ret);
}