archive_write_set_format_pax.c [plain text]
#include "archive_platform.h"
__FBSDID("$FreeBSD: src/lib/libarchive/archive_write_set_format_pax.c,v 1.49 2008/09/30 03:57:07 kientzle Exp $");
#ifdef HAVE_ERRNO_H
#include <errno.h>
#endif
#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_private.h"
#include "archive_write_private.h"
struct pax {
uint64_t entry_bytes_remaining;
uint64_t entry_padding;
struct archive_string pax_header;
};
static void add_pax_attr(struct archive_string *, const char *key,
const char *value);
static void add_pax_attr_int(struct archive_string *,
const char *key, int64_t value);
static void add_pax_attr_time(struct archive_string *,
const char *key, int64_t sec,
unsigned long nanos);
static void add_pax_attr_w(struct archive_string *,
const char *key, const wchar_t *wvalue);
static ssize_t archive_write_pax_data(struct archive_write *,
const void *, size_t);
static int archive_write_pax_finish(struct archive_write *);
static int archive_write_pax_destroy(struct archive_write *);
static int archive_write_pax_finish_entry(struct archive_write *);
static int archive_write_pax_header(struct archive_write *,
struct archive_entry *);
static char *base64_encode(const char *src, size_t len);
static char *build_pax_attribute_name(char *dest, const char *src);
static char *build_ustar_entry_name(char *dest, const char *src,
size_t src_length, const char *insert);
static char *format_int(char *dest, int64_t);
static int has_non_ASCII(const wchar_t *);
static char *url_encode(const char *in);
static int write_nulls(struct archive_write *, size_t);
int
archive_write_set_format_pax_restricted(struct archive *_a)
{
struct archive_write *a = (struct archive_write *)_a;
int r;
r = archive_write_set_format_pax(&a->archive);
a->archive.archive_format = ARCHIVE_FORMAT_TAR_PAX_RESTRICTED;
a->archive.archive_format_name = "restricted POSIX pax interchange";
return (r);
}
int
archive_write_set_format_pax(struct archive *_a)
{
struct archive_write *a = (struct archive_write *)_a;
struct pax *pax;
if (a->format_destroy != NULL)
(a->format_destroy)(a);
pax = (struct pax *)malloc(sizeof(*pax));
if (pax == NULL) {
archive_set_error(&a->archive, ENOMEM, "Can't allocate pax data");
return (ARCHIVE_FATAL);
}
memset(pax, 0, sizeof(*pax));
a->format_data = pax;
a->pad_uncompressed = 1;
a->format_write_header = archive_write_pax_header;
a->format_write_data = archive_write_pax_data;
a->format_finish = archive_write_pax_finish;
a->format_destroy = archive_write_pax_destroy;
a->format_finish_entry = archive_write_pax_finish_entry;
a->archive.archive_format = ARCHIVE_FORMAT_TAR_PAX_INTERCHANGE;
a->archive.archive_format_name = "POSIX pax interchange";
return (ARCHIVE_OK);
}
static void
add_pax_attr_time(struct archive_string *as, const char *key,
int64_t sec, unsigned long nanos)
{
int digit, i;
char *t;
char tmp[1 + 3*sizeof(sec) + 1 + 3*sizeof(nanos)];
tmp[sizeof(tmp) - 1] = 0;
t = tmp + sizeof(tmp) - 1;
for (digit = 0, i = 10; i > 0 && digit == 0; i--) {
digit = nanos % 10;
nanos /= 10;
}
if (i > 0) {
while (i > 0) {
*--t = "0123456789"[digit];
digit = nanos % 10;
nanos /= 10;
i--;
}
*--t = '.';
}
t = format_int(t, sec);
add_pax_attr(as, key, t);
}
static char *
format_int(char *t, int64_t i)
{
int sign;
if (i < 0) {
sign = -1;
i = -i;
} else
sign = 1;
do {
*--t = "0123456789"[i % 10];
} while (i /= 10);
if (sign < 0)
*--t = '-';
return (t);
}
static void
add_pax_attr_int(struct archive_string *as, const char *key, int64_t value)
{
char tmp[1 + 3 * sizeof(value)];
tmp[sizeof(tmp) - 1] = 0;
add_pax_attr(as, key, format_int(tmp + sizeof(tmp) - 1, value));
}
static char *
utf8_encode(const wchar_t *wval)
{
int utf8len;
const wchar_t *wp;
unsigned long wc;
char *utf8_value, *p;
utf8len = 0;
for (wp = wval; *wp != L'\0'; ) {
wc = *wp++;
if (wc <= 0x7f)
utf8len++;
else if (wc <= 0x7ff)
utf8len += 2;
else if (wc <= 0xffff)
utf8len += 3;
else if (wc <= 0x1fffff)
utf8len += 4;
else if (wc <= 0x3ffffff)
utf8len += 5;
else if (wc <= 0x7fffffff)
utf8len += 6;
}
utf8_value = (char *)malloc(utf8len + 1);
if (utf8_value == NULL) {
__archive_errx(1, "Not enough memory for attributes");
return (NULL);
}
for (wp = wval, p = utf8_value; *wp != L'\0'; ) {
wc = *wp++;
if (wc <= 0x7f) {
*p++ = (char)wc;
} else if (wc <= 0x7ff) {
p[0] = 0xc0 | ((wc >> 6) & 0x1f);
p[1] = 0x80 | (wc & 0x3f);
p += 2;
} else if (wc <= 0xffff) {
p[0] = 0xe0 | ((wc >> 12) & 0x0f);
p[1] = 0x80 | ((wc >> 6) & 0x3f);
p[2] = 0x80 | (wc & 0x3f);
p += 3;
} else if (wc <= 0x1fffff) {
p[0] = 0xf0 | ((wc >> 18) & 0x07);
p[1] = 0x80 | ((wc >> 12) & 0x3f);
p[2] = 0x80 | ((wc >> 6) & 0x3f);
p[3] = 0x80 | (wc & 0x3f);
p += 4;
} else if (wc <= 0x3ffffff) {
p[0] = 0xf8 | ((wc >> 24) & 0x03);
p[1] = 0x80 | ((wc >> 18) & 0x3f);
p[2] = 0x80 | ((wc >> 12) & 0x3f);
p[3] = 0x80 | ((wc >> 6) & 0x3f);
p[4] = 0x80 | (wc & 0x3f);
p += 5;
} else if (wc <= 0x7fffffff) {
p[0] = 0xfc | ((wc >> 30) & 0x01);
p[1] = 0x80 | ((wc >> 24) & 0x3f);
p[1] = 0x80 | ((wc >> 18) & 0x3f);
p[2] = 0x80 | ((wc >> 12) & 0x3f);
p[3] = 0x80 | ((wc >> 6) & 0x3f);
p[4] = 0x80 | (wc & 0x3f);
p += 6;
}
}
*p = '\0';
return (utf8_value);
}
static void
add_pax_attr_w(struct archive_string *as, const char *key, const wchar_t *wval)
{
char *utf8_value = utf8_encode(wval);
if (utf8_value == NULL)
return;
add_pax_attr(as, key, utf8_value);
free(utf8_value);
}
static void
add_pax_attr(struct archive_string *as, const char *key, const char *value)
{
int digits, i, len, next_ten;
char tmp[1 + 3 * sizeof(int)];
len = 1 + strlen(key) + 1 + strlen(value) + 1;
next_ten = 1;
digits = 0;
i = len;
while (i > 0) {
i = i / 10;
digits++;
next_ten = next_ten * 10;
}
if (len + digits >= next_ten)
digits++;
tmp[sizeof(tmp) - 1] = 0;
archive_strcat(as, format_int(tmp + sizeof(tmp) - 1, len + digits));
archive_strappend_char(as, ' ');
archive_strcat(as, key);
archive_strappend_char(as, '=');
archive_strcat(as, value);
archive_strappend_char(as, '\n');
}
static void
archive_write_pax_header_xattrs(struct pax *pax, struct archive_entry *entry)
{
struct archive_string s;
int i = archive_entry_xattr_reset(entry);
while (i--) {
const char *name;
const void *value;
char *encoded_value;
char *url_encoded_name = NULL, *encoded_name = NULL;
wchar_t *wcs_name = NULL;
size_t size;
archive_entry_xattr_next(entry, &name, &value, &size);
url_encoded_name = url_encode(name);
if (url_encoded_name != NULL) {
int wcs_length = strlen(url_encoded_name);
wcs_name = (wchar_t *)malloc((wcs_length + 1) * sizeof(wchar_t));
if (wcs_name == NULL)
__archive_errx(1, "No memory for xattr conversion");
mbstowcs(wcs_name, url_encoded_name, wcs_length);
wcs_name[wcs_length] = 0;
free(url_encoded_name);
}
if (wcs_name != NULL) {
encoded_name = utf8_encode(wcs_name);
free(wcs_name);
}
encoded_value = base64_encode((const char *)value, size);
if (encoded_name != NULL && encoded_value != NULL) {
archive_string_init(&s);
archive_strcpy(&s, "LIBARCHIVE.xattr.");
archive_strcat(&s, encoded_name);
add_pax_attr(&(pax->pax_header), s.s, encoded_value);
archive_string_free(&s);
}
free(encoded_name);
free(encoded_value);
}
}
static int
archive_write_pax_header(struct archive_write *a,
struct archive_entry *entry_original)
{
struct archive_entry *entry_main;
const char *p;
char *t;
const wchar_t *wp;
const char *suffix;
int need_extension, r, ret;
struct pax *pax;
const char *hdrcharset = NULL;
const char *hardlink;
const char *path = NULL, *linkpath = NULL;
const char *uname = NULL, *gname = NULL;
const wchar_t *path_w = NULL, *linkpath_w = NULL;
const wchar_t *uname_w = NULL, *gname_w = NULL;
char paxbuff[512];
char ustarbuff[512];
char ustar_entry_name[256];
char pax_entry_name[256];
ret = ARCHIVE_OK;
need_extension = 0;
pax = (struct pax *)a->format_data;
hardlink = archive_entry_hardlink(entry_original);
if (hardlink == NULL) {
switch (archive_entry_filetype(entry_original)) {
case AE_IFBLK:
case AE_IFCHR:
case AE_IFIFO:
case AE_IFLNK:
case AE_IFREG:
break;
case AE_IFDIR:
p = archive_entry_pathname(entry_original);
if (p[strlen(p) - 1] != '/') {
t = (char *)malloc(strlen(p) + 2);
if (t == NULL) {
archive_set_error(&a->archive, ENOMEM,
"Can't allocate pax data");
return(ARCHIVE_FATAL);
}
strcpy(t, p);
strcat(t, "/");
archive_entry_copy_pathname(entry_original, t);
free(t);
}
break;
default:
archive_set_error(&a->archive, ARCHIVE_ERRNO_FILE_FORMAT,
"tar format cannot archive this (type=0%lo)",
(unsigned long)archive_entry_filetype(entry_original));
return (ARCHIVE_WARN);
}
}
entry_main = archive_entry_clone(entry_original);
archive_string_empty(&(pax->pax_header));
hdrcharset = NULL;
path = archive_entry_pathname(entry_main);
path_w = archive_entry_pathname_w(entry_main);
if (path != NULL && path_w == NULL) {
archive_set_error(&a->archive, EILSEQ,
"Can't translate pathname '%s' to UTF-8", path);
ret = ARCHIVE_WARN;
hdrcharset = "BINARY";
}
uname = archive_entry_uname(entry_main);
uname_w = archive_entry_uname_w(entry_main);
if (uname != NULL && uname_w == NULL) {
archive_set_error(&a->archive, EILSEQ,
"Can't translate uname '%s' to UTF-8", uname);
ret = ARCHIVE_WARN;
hdrcharset = "BINARY";
}
gname = archive_entry_gname(entry_main);
gname_w = archive_entry_gname_w(entry_main);
if (gname != NULL && gname_w == NULL) {
archive_set_error(&a->archive, EILSEQ,
"Can't translate gname '%s' to UTF-8", gname);
ret = ARCHIVE_WARN;
hdrcharset = "BINARY";
}
linkpath = hardlink;
if (linkpath != NULL) {
linkpath_w = archive_entry_hardlink_w(entry_main);
} else {
linkpath = archive_entry_symlink(entry_main);
if (linkpath != NULL)
linkpath_w = archive_entry_symlink_w(entry_main);
}
if (linkpath != NULL && linkpath_w == NULL) {
archive_set_error(&a->archive, EILSEQ,
"Can't translate linkpath '%s' to UTF-8", linkpath);
ret = ARCHIVE_WARN;
hdrcharset = "BINARY";
}
if (hdrcharset != NULL)
add_pax_attr(&(pax->pax_header), "hdrcharset", hdrcharset);
if (path == NULL) {
add_pax_attr_w(&(pax->pax_header), "path", path_w);
archive_entry_set_pathname(entry_main, "@WidePath");
need_extension = 1;
} else if (has_non_ASCII(path_w)) {
if (path_w == NULL || hdrcharset != NULL) {
add_pax_attr(&(pax->pax_header), "path", path);
} else {
add_pax_attr_w(&(pax->pax_header),
"path", path_w);
}
archive_entry_set_pathname(entry_main,
build_ustar_entry_name(ustar_entry_name,
path, strlen(path), NULL));
need_extension = 1;
} else {
if (strlen(path) <= 100) {
} else {
suffix = strchr(path + strlen(path) - 100 - 1, '/');
if (suffix == path)
suffix = strchr(suffix + 1, '/');
if (suffix == NULL
|| suffix[1] == '\0'
|| suffix - path > 155)
{
if (path_w == NULL || hdrcharset != NULL) {
add_pax_attr(&(pax->pax_header),
"path", path);
} else {
add_pax_attr_w(&(pax->pax_header),
"path", path_w);
}
archive_entry_set_pathname(entry_main,
build_ustar_entry_name(ustar_entry_name,
path, strlen(path), NULL));
need_extension = 1;
}
}
}
if (linkpath != NULL) {
if (strlen(linkpath) > 100 || linkpath_w == NULL
|| linkpath_w == NULL || has_non_ASCII(linkpath_w)) {
if (linkpath_w == NULL || hdrcharset != NULL)
add_pax_attr(&(pax->pax_header),
"linkpath", linkpath);
else
add_pax_attr_w(&(pax->pax_header),
"linkpath", linkpath_w);
if (strlen(linkpath) > 100) {
if (hardlink != NULL)
archive_entry_set_hardlink(entry_main,
"././@LongHardLink");
else
archive_entry_set_symlink(entry_main,
"././@LongSymLink");
}
need_extension = 1;
}
}
if (archive_entry_size(entry_main) >= (((int64_t)1) << 33)) {
add_pax_attr_int(&(pax->pax_header), "size",
archive_entry_size(entry_main));
need_extension = 1;
}
if (archive_entry_gid(entry_main) >= (1 << 18)) {
add_pax_attr_int(&(pax->pax_header), "gid",
archive_entry_gid(entry_main));
need_extension = 1;
}
if (gname != NULL) {
if (strlen(gname) > 31
|| gname_w == NULL
|| has_non_ASCII(gname_w))
{
if (gname_w == NULL || hdrcharset != NULL) {
add_pax_attr(&(pax->pax_header),
"gname", gname);
} else {
add_pax_attr_w(&(pax->pax_header),
"gname", gname_w);
}
need_extension = 1;
}
}
if (archive_entry_uid(entry_main) >= (1 << 18)) {
add_pax_attr_int(&(pax->pax_header), "uid",
archive_entry_uid(entry_main));
need_extension = 1;
}
if (uname != NULL) {
if (strlen(uname) > 31
|| uname_w == NULL
|| has_non_ASCII(uname_w))
{
if (uname_w == NULL || hdrcharset != NULL) {
add_pax_attr(&(pax->pax_header),
"uname", uname);
} else {
add_pax_attr_w(&(pax->pax_header),
"uname", uname_w);
}
need_extension = 1;
}
}
if (archive_entry_filetype(entry_main) == AE_IFBLK
|| archive_entry_filetype(entry_main) == AE_IFCHR) {
dev_t rdevmajor, rdevminor;
rdevmajor = archive_entry_rdevmajor(entry_main);
rdevminor = archive_entry_rdevminor(entry_main);
if (rdevmajor >= (1 << 18)) {
add_pax_attr_int(&(pax->pax_header), "SCHILY.devmajor",
rdevmajor);
need_extension = 1;
}
if (rdevminor >= (1 << 18)) {
add_pax_attr_int(&(pax->pax_header), "SCHILY.devminor",
rdevminor);
need_extension = 1;
}
}
if (!need_extension &&
((archive_entry_mtime(entry_main) < 0)
|| (archive_entry_mtime(entry_main) >= 0x7fffffff)))
need_extension = 1;
p = archive_entry_fflags_text(entry_main);
if (!need_extension && p != NULL && *p != '\0')
need_extension = 1;
if (!need_extension && archive_entry_acl_count(entry_original,
ARCHIVE_ENTRY_ACL_TYPE_ACCESS) > 0)
need_extension = 1;
if (!need_extension && archive_entry_acl_count(entry_original,
ARCHIVE_ENTRY_ACL_TYPE_DEFAULT) > 0)
need_extension = 1;
if (!need_extension && archive_entry_xattr_count(entry_original) > 0)
need_extension = 1;
if (a->archive.archive_format != ARCHIVE_FORMAT_TAR_PAX_RESTRICTED ||
need_extension) {
if (archive_entry_mtime(entry_main) < 0 ||
archive_entry_mtime(entry_main) >= 0x7fffffff ||
archive_entry_mtime_nsec(entry_main) != 0)
add_pax_attr_time(&(pax->pax_header), "mtime",
archive_entry_mtime(entry_main),
archive_entry_mtime_nsec(entry_main));
if (archive_entry_ctime(entry_main) != 0 ||
archive_entry_ctime_nsec(entry_main) != 0)
add_pax_attr_time(&(pax->pax_header), "ctime",
archive_entry_ctime(entry_main),
archive_entry_ctime_nsec(entry_main));
if (archive_entry_atime(entry_main) != 0 ||
archive_entry_atime_nsec(entry_main) != 0)
add_pax_attr_time(&(pax->pax_header), "atime",
archive_entry_atime(entry_main),
archive_entry_atime_nsec(entry_main));
if (archive_entry_birthtime_is_set(entry_main) &&
archive_entry_birthtime(entry_main)
< archive_entry_mtime(entry_main))
add_pax_attr_time(&(pax->pax_header),
"LIBARCHIVE.creationtime",
archive_entry_birthtime(entry_main),
archive_entry_birthtime_nsec(entry_main));
p = archive_entry_fflags_text(entry_main);
if (p != NULL && *p != '\0')
add_pax_attr(&(pax->pax_header), "SCHILY.fflags", p);
wp = archive_entry_acl_text_w(entry_original,
ARCHIVE_ENTRY_ACL_TYPE_ACCESS |
ARCHIVE_ENTRY_ACL_STYLE_EXTRA_ID);
if (wp != NULL && *wp != L'\0')
add_pax_attr_w(&(pax->pax_header),
"SCHILY.acl.access", wp);
wp = archive_entry_acl_text_w(entry_original,
ARCHIVE_ENTRY_ACL_TYPE_DEFAULT |
ARCHIVE_ENTRY_ACL_STYLE_EXTRA_ID);
if (wp != NULL && *wp != L'\0')
add_pax_attr_w(&(pax->pax_header),
"SCHILY.acl.default", wp);
add_pax_attr_int(&(pax->pax_header), "SCHILY.dev",
archive_entry_dev(entry_main));
add_pax_attr_int(&(pax->pax_header), "SCHILY.ino",
archive_entry_ino(entry_main));
add_pax_attr_int(&(pax->pax_header), "SCHILY.nlink",
archive_entry_nlink(entry_main));
archive_write_pax_header_xattrs(pax, entry_original);
}
if (archive_entry_filetype(entry_main) != AE_IFREG)
archive_entry_set_size(entry_main, 0);
if (a->archive.archive_format != ARCHIVE_FORMAT_TAR_PAX_INTERCHANGE &&
hardlink != NULL)
archive_entry_set_size(entry_main, 0);
if (hardlink != NULL)
archive_entry_set_size(entry_main, 0);
__archive_write_format_header_ustar(a, ustarbuff, entry_main, -1, 0);
if (archive_strlen(&(pax->pax_header)) > 0) {
struct archive_entry *pax_attr_entry;
time_t s;
uid_t uid;
gid_t gid;
mode_t mode;
long ns;
pax_attr_entry = archive_entry_new();
p = archive_entry_pathname(entry_main);
archive_entry_set_pathname(pax_attr_entry,
build_pax_attribute_name(pax_entry_name, p));
archive_entry_set_size(pax_attr_entry,
archive_strlen(&(pax->pax_header)));
uid = archive_entry_uid(entry_main);
if (uid >= 1 << 18)
uid = (1 << 18) - 1;
archive_entry_set_uid(pax_attr_entry, uid);
gid = archive_entry_gid(entry_main);
if (gid >= 1 << 18)
gid = (1 << 18) - 1;
archive_entry_set_gid(pax_attr_entry, gid);
mode = archive_entry_mode(entry_main);
#ifdef S_ISUID
mode &= ~S_ISUID;
#endif
#ifdef S_ISGID
mode &= ~S_ISGID;
#endif
#ifdef S_ISVTX
mode &= ~S_ISVTX;
#endif
archive_entry_set_mode(pax_attr_entry, mode);
archive_entry_set_uname(pax_attr_entry,
archive_entry_uname(entry_main));
archive_entry_set_gname(pax_attr_entry,
archive_entry_gname(entry_main));
s = archive_entry_mtime(entry_main);
ns = archive_entry_mtime_nsec(entry_main);
if (s < 0) { s = 0; ns = 0; }
if (s > 0x7fffffff) { s = 0x7fffffff; ns = 0; }
archive_entry_set_mtime(pax_attr_entry, s, ns);
s = archive_entry_atime(entry_main);
ns = archive_entry_atime_nsec(entry_main);
if (s < 0) { s = 0; ns = 0; }
if (s > 0x7fffffff) { s = 0x7fffffff; ns = 0; }
archive_entry_set_atime(pax_attr_entry, s, ns);
archive_entry_set_ctime(pax_attr_entry, 0, 0);
r = __archive_write_format_header_ustar(a, paxbuff,
pax_attr_entry, 'x', 1);
archive_entry_free(pax_attr_entry);
if (r != 0) {
const char *msg = "archive_write_pax_header: "
"'x' header failed?! This can't happen.\n";
write(2, msg, strlen(msg));
exit(1);
}
r = (a->compressor.write)(a, paxbuff, 512);
if (r != ARCHIVE_OK) {
pax->entry_bytes_remaining = 0;
pax->entry_padding = 0;
return (ARCHIVE_FATAL);
}
pax->entry_bytes_remaining = archive_strlen(&(pax->pax_header));
pax->entry_padding = 0x1ff & (-(int64_t)pax->entry_bytes_remaining);
r = (a->compressor.write)(a, pax->pax_header.s,
archive_strlen(&(pax->pax_header)));
if (r != ARCHIVE_OK) {
return (ARCHIVE_FATAL);
}
r = write_nulls(a, pax->entry_padding);
if (r != ARCHIVE_OK) {
return (ARCHIVE_FATAL);
}
pax->entry_bytes_remaining = pax->entry_padding = 0;
}
r = (a->compressor.write)(a, ustarbuff, 512);
if (r != ARCHIVE_OK)
return (r);
archive_entry_set_size(entry_original, archive_entry_size(entry_main));
pax->entry_bytes_remaining = archive_entry_size(entry_main);
pax->entry_padding = 0x1ff & (-(int64_t)pax->entry_bytes_remaining);
archive_entry_free(entry_main);
return (ret);
}
static char *
build_ustar_entry_name(char *dest, const char *src, size_t src_length,
const char *insert)
{
const char *prefix, *prefix_end;
const char *suffix, *suffix_end;
const char *filename, *filename_end;
char *p;
int need_slash = 0;
size_t suffix_length = 99;
int insert_length;
if (insert == NULL)
insert_length = 0;
else
insert_length = strlen(insert) + 2;
if (src_length < 100 && insert == NULL) {
strncpy(dest, src, src_length);
dest[src_length] = '\0';
return (dest);
}
filename_end = src + src_length;
for (;;) {
if (filename_end > src && filename_end[-1] == '/') {
filename_end --;
need_slash = 1;
continue;
}
if (filename_end > src + 1 && filename_end[-1] == '.'
&& filename_end[-2] == '/') {
filename_end -= 2;
need_slash = 1;
continue;
}
break;
}
if (need_slash)
suffix_length--;
filename = filename_end - 1;
while ((filename > src) && (*filename != '/'))
filename --;
if ((*filename == '/') && (filename < filename_end - 1))
filename ++;
suffix_length -= insert_length;
if (filename_end > filename + suffix_length)
filename_end = filename + suffix_length;
suffix_length -= filename_end - filename;
prefix = src;
prefix_end = prefix + 155;
if (prefix_end > filename)
prefix_end = filename;
while (prefix_end > prefix && *prefix_end != '/')
prefix_end--;
if ((prefix_end < filename) && (*prefix_end == '/'))
prefix_end++;
suffix = prefix_end;
suffix_end = suffix + suffix_length;
if (suffix_end > filename)
suffix_end = filename;
if (suffix_end < suffix)
suffix_end = suffix;
while (suffix_end > suffix && *suffix_end != '/')
suffix_end--;
if ((suffix_end < filename) && (*suffix_end == '/'))
suffix_end++;
p = dest;
if (prefix_end > prefix) {
strncpy(p, prefix, prefix_end - prefix);
p += prefix_end - prefix;
}
if (suffix_end > suffix) {
strncpy(p, suffix, suffix_end - suffix);
p += suffix_end - suffix;
}
if (insert != NULL) {
strcpy(p, insert);
p += strlen(insert);
*p++ = '/';
}
strncpy(p, filename, filename_end - filename);
p += filename_end - filename;
if (need_slash)
*p++ = '/';
*p++ = '\0';
return (dest);
}
static char *
build_pax_attribute_name(char *dest, const char *src)
{
char buff[64];
const char *p;
if (src == NULL || *src == '\0') {
strcpy(dest, "PaxHeader/blank");
return (dest);
}
p = src + strlen(src);
for (;;) {
if (p > src && p[-1] == '/') {
--p;
continue;
}
if (p > src + 1 && p[-1] == '.'
&& p[-2] == '/') {
--p;
continue;
}
break;
}
if (p == src) {
strcpy(dest, "/PaxHeader/rootdir");
return (dest);
}
if (*src == '.' && p == src + 1) {
strcpy(dest, "PaxHeader/currentdir");
return (dest);
}
#if HAVE_GETPID && 0
sprintf(buff, "PaxHeader.%d", getpid());
#else
strcpy(buff, "PaxHeader");
#endif
build_ustar_entry_name(dest, src, p - src, buff);
return (dest);
}
static int
archive_write_pax_finish(struct archive_write *a)
{
struct pax *pax;
int r;
if (a->compressor.write == NULL)
return (ARCHIVE_OK);
pax = (struct pax *)a->format_data;
r = write_nulls(a, 512 * 2);
return (r);
}
static int
archive_write_pax_destroy(struct archive_write *a)
{
struct pax *pax;
pax = (struct pax *)a->format_data;
if (pax == NULL)
return (ARCHIVE_OK);
archive_string_free(&pax->pax_header);
free(pax);
a->format_data = NULL;
return (ARCHIVE_OK);
}
static int
archive_write_pax_finish_entry(struct archive_write *a)
{
struct pax *pax;
int ret;
pax = (struct pax *)a->format_data;
ret = write_nulls(a, pax->entry_bytes_remaining + pax->entry_padding);
pax->entry_bytes_remaining = pax->entry_padding = 0;
return (ret);
}
static int
write_nulls(struct archive_write *a, size_t padding)
{
int ret, to_write;
while (padding > 0) {
to_write = padding < a->null_length ? padding : a->null_length;
ret = (a->compressor.write)(a, a->nulls, to_write);
if (ret != ARCHIVE_OK)
return (ret);
padding -= to_write;
}
return (ARCHIVE_OK);
}
static ssize_t
archive_write_pax_data(struct archive_write *a, const void *buff, size_t s)
{
struct pax *pax;
int ret;
pax = (struct pax *)a->format_data;
if (s > pax->entry_bytes_remaining)
s = pax->entry_bytes_remaining;
ret = (a->compressor.write)(a, buff, s);
pax->entry_bytes_remaining -= s;
if (ret == ARCHIVE_OK)
return (s);
else
return (ret);
}
static int
has_non_ASCII(const wchar_t *wp)
{
if (wp == NULL)
return (1);
while (*wp != L'\0' && *wp < 128)
wp++;
return (*wp != L'\0');
}
static char *
url_encode(const char *in)
{
const char *s;
char *d;
int out_len = 0;
char *out;
for (s = in; *s != '\0'; s++) {
if (*s < 33 || *s > 126 || *s == '%' || *s == '=')
out_len += 3;
else
out_len++;
}
out = (char *)malloc(out_len + 1);
if (out == NULL)
return (NULL);
for (s = in, d = out; *s != '\0'; s++) {
if (*s < 33 || *s > 126 || *s == '%' || *s == '=') {
*d++ = '%';
*d++ = "0123456789ABCDEF"[0x0f & (*s >> 4)];
*d++ = "0123456789ABCDEF"[0x0f & *s];
} else {
*d++ = *s;
}
}
*d = '\0';
return (out);
}
static char *
base64_encode(const char *s, size_t len)
{
static const char digits[64] =
{ 'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O',
'P','Q','R','S','T','U','V','W','X','Y','Z','a','b','c','d',
'e','f','g','h','i','j','k','l','m','n','o','p','q','r','s',
't','u','v','w','x','y','z','0','1','2','3','4','5','6','7',
'8','9','+','/' };
int v;
char *d, *out;
out = (char *)malloc((len * 4 + 2) / 3 + 1);
if (out == NULL)
return (NULL);
d = out;
while (len >= 3) {
v = (((int)s[0] << 16) & 0xff0000)
| (((int)s[1] << 8) & 0xff00)
| (((int)s[2]) & 0x00ff);
s += 3;
len -= 3;
*d++ = digits[(v >> 18) & 0x3f];
*d++ = digits[(v >> 12) & 0x3f];
*d++ = digits[(v >> 6) & 0x3f];
*d++ = digits[(v) & 0x3f];
}
switch (len) {
case 0: break;
case 1:
v = (((int)s[0] << 16) & 0xff0000);
*d++ = digits[(v >> 18) & 0x3f];
*d++ = digits[(v >> 12) & 0x3f];
break;
case 2:
v = (((int)s[0] << 16) & 0xff0000)
| (((int)s[1] << 8) & 0xff00);
*d++ = digits[(v >> 18) & 0x3f];
*d++ = digits[(v >> 12) & 0x3f];
*d++ = digits[(v >> 6) & 0x3f];
break;
}
*d++ = '\0';
return (out);
}