f03aa75458
buffer that disappears when the function terminates. This might lead to segmentation faults. Reset to the old TZ value (if any) or unset the variable if it was previously not set. Problem noted and fixed by Nicolas Boullis.
1183 lines
31 KiB
C
1183 lines
31 KiB
C
/*
|
||
$Id: iso9660.c,v 1.38 2008/05/31 11:59:06 rocky Exp $
|
||
|
||
Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008
|
||
Rocky Bernstein <rocky@gnu.org>
|
||
Copyright (C) 2000 Herbert Valerio Riedel <hvr@gnu.org>
|
||
|
||
This program is free software: you can redistribute it and/or modify
|
||
it under the terms of the GNU General Public License as published by
|
||
the Free Software Foundation, either version 3 of the License, or
|
||
(at your option) any later version.
|
||
|
||
This program is distributed in the hope that it will be useful,
|
||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
GNU General Public License for more details.
|
||
|
||
You should have received a copy of the GNU General Public License
|
||
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||
*/
|
||
|
||
/*! String inside frame which identifies an ISO 9660 filesystem. This
|
||
string is the "id" field of an iso9660_pvd_t or an iso9660_svd_t.
|
||
Note should come *before* #include <cdio/iso9660.h> which does
|
||
a #define of this name.
|
||
*/
|
||
const char ISO_STANDARD_ID[] = {'C', 'D', '0', '0', '1'};
|
||
|
||
/* Private headers */
|
||
#include "iso9660_private.h"
|
||
#include "cdio_assert.h"
|
||
|
||
/* Public headers */
|
||
#include <cdio/bytesex.h>
|
||
#include <cdio/iso9660.h>
|
||
#include <cdio/util.h>
|
||
|
||
#include <time.h>
|
||
#include <ctype.h>
|
||
#ifdef HAVE_STRING_H
|
||
#include <string.h>
|
||
#endif
|
||
#ifdef HAVE_STDIO_H
|
||
#include <stdio.h>
|
||
#endif
|
||
#ifdef HAVE_LIMITS_H
|
||
#include <limits.h>
|
||
#endif
|
||
#ifdef HAVE_STDLIB_H
|
||
#include <stdlib.h>
|
||
#endif
|
||
#ifdef HAVE_SYS_STAT_H
|
||
#include <sys/stat.h>
|
||
#endif
|
||
|
||
#ifdef HAVE_ERRNO_H
|
||
#include <errno.h>
|
||
#endif
|
||
|
||
static const char _rcsid[] = "$Id: iso9660.c,v 1.38 2008/05/31 11:59:06 rocky Exp $";
|
||
|
||
/* Variables to hold debugger-helping enumerations */
|
||
enum iso_enum1_s iso_enums1;
|
||
enum iso_flag_enum_s iso_flag_enums;
|
||
enum iso_vd_enum_s iso_vd_enums;
|
||
enum iso_extension_enum_s iso_extension_enums;
|
||
|
||
/* some parameters... */
|
||
#define SYSTEM_ID "CD-RTOS CD-BRIDGE"
|
||
#define VOLUME_SET_ID ""
|
||
|
||
/*!
|
||
Change trailing blanks in str to nulls. Str has a maximum size of
|
||
n characters.
|
||
*/
|
||
static char *
|
||
strip_trail (const char str[], size_t n)
|
||
{
|
||
static char buf[1025];
|
||
int j;
|
||
|
||
cdio_assert (n < 1024);
|
||
|
||
strncpy (buf, str, n);
|
||
buf[n] = '\0';
|
||
|
||
for (j = strlen (buf) - 1; j >= 0; j--)
|
||
{
|
||
if (buf[j] != ' ')
|
||
break;
|
||
|
||
buf[j] = '\0';
|
||
}
|
||
|
||
return buf;
|
||
}
|
||
|
||
static void
|
||
pathtable_get_size_and_entries(const void *pt, unsigned int *size,
|
||
unsigned int *entries);
|
||
|
||
/*!
|
||
Get time structure from structure in an ISO 9660 directory index
|
||
record. Even though tm_wday and tm_yday fields are not explicitly in
|
||
idr_date, the are calculated from the other fields.
|
||
|
||
If tm is to reflect the localtime set b_localtime true, otherwise
|
||
tm will reported in GMT.
|
||
*/
|
||
bool
|
||
iso9660_get_dtime (const iso9660_dtime_t *idr_date, bool b_localtime,
|
||
/*out*/ struct tm *p_tm)
|
||
{
|
||
if (!idr_date) return false;
|
||
|
||
/*
|
||
Section 9.1.5 of ECMA 119 says:
|
||
If all seven numbers are zero, it shall mean that the date and
|
||
time are not specified.
|
||
|
||
HACK: However we've seen it happen that everything except gmtoff
|
||
is zero and the expected date is the beginning of the epoch. So
|
||
we accept 6 numbers being zero. I'm also not sure if using the
|
||
beginning of the Epoch is also the right thing to do either.
|
||
*/
|
||
|
||
if ( 0 == idr_date->dt_year && 0 == idr_date->dt_month &&
|
||
0 == idr_date->dt_day && 0 == idr_date->dt_hour &&
|
||
0 == idr_date->dt_minute && 0 == idr_date->dt_second ) {
|
||
time_t t = 0;
|
||
struct tm temp_tm;
|
||
localtime_r(&t, &temp_tm);
|
||
|
||
memcpy(p_tm, &temp_tm, sizeof(struct tm));
|
||
return true;
|
||
}
|
||
|
||
memset(p_tm, 0, sizeof(struct tm));
|
||
|
||
p_tm->tm_year = idr_date->dt_year;
|
||
p_tm->tm_mon = idr_date->dt_month - 1;
|
||
p_tm->tm_mday = idr_date->dt_day;
|
||
p_tm->tm_hour = idr_date->dt_hour;
|
||
p_tm->tm_min = idr_date->dt_minute;
|
||
p_tm->tm_sec = idr_date->dt_second - idr_date->dt_gmtoff * (15 * 60);
|
||
p_tm->tm_isdst = -1; /* information not available */
|
||
|
||
/* Recompute tm_wday and tm_yday via mktime. mktime will also renormalize
|
||
date values to account for the timezone offset. */
|
||
{
|
||
time_t t = 0;
|
||
struct tm *p_temp_tm = b_localtime ? localtime(&t): gmtime(&t);
|
||
|
||
t = mktime(p_tm);
|
||
|
||
p_temp_tm = b_localtime ? localtime(&t) : gmtime(&t);
|
||
|
||
if (p_temp_tm->tm_isdst) {
|
||
t += 60*60;
|
||
p_temp_tm = b_localtime ? localtime(&t) : gmtime(&t);
|
||
}
|
||
|
||
memcpy(p_tm, p_temp_tm, sizeof(struct tm));
|
||
}
|
||
|
||
|
||
return true;
|
||
}
|
||
|
||
/*
|
||
A note regarding the strange strtol() testing below as pointed out SMS.
|
||
From man strtol:
|
||
|
||
If an underflow occurs, strtol() returns LONG_MIN. If an overflow
|
||
occurs, strtol() returns LONG_MAX. In both cases, errno is set to
|
||
ERANGE.
|
||
|
||
This implies that one should only look at errno if the value is
|
||
LONG_MIN or LONG_MAX.
|
||
*/
|
||
|
||
#define set_ltime_field(TM_FIELD, LT_FIELD, ADD_CONSTANT) \
|
||
{ \
|
||
char num[10]; long tmp; \
|
||
memcpy(num, p_ldate->LT_FIELD, sizeof(p_ldate->LT_FIELD)); \
|
||
num[sizeof(p_ldate->LT_FIELD)] = '\0'; \
|
||
errno = 0; \
|
||
tmp = strtol(num, \
|
||
(char **)NULL, 10); \
|
||
if ( tmp < INT_MIN || tmp > INT_MAX || \
|
||
((unsigned long)tmp + ADD_CONSTANT) > INT_MAX || \
|
||
(tmp + ADD_CONSTANT) < INT_MIN ) \
|
||
return false; \
|
||
p_tm->TM_FIELD = tmp + ADD_CONSTANT; \
|
||
}
|
||
|
||
/*!
|
||
Get "long" time in format used in ISO 9660 primary volume descriptor
|
||
from a Unix time structure.
|
||
*/
|
||
bool
|
||
iso9660_get_ltime (const iso9660_ltime_t *p_ldate,
|
||
/*out*/ struct tm *p_tm)
|
||
{
|
||
if (!p_tm) return false;
|
||
memset(p_tm, 0, sizeof(struct tm));
|
||
set_ltime_field(tm_year, lt_year, -1900);
|
||
set_ltime_field(tm_mon, lt_month, -1);
|
||
set_ltime_field(tm_mday, lt_day, 0);
|
||
set_ltime_field(tm_hour, lt_hour, 0);
|
||
set_ltime_field(tm_min, lt_minute, 0);
|
||
set_ltime_field(tm_sec, lt_second, 0);
|
||
p_tm->tm_isdst= -1; /* information not available */
|
||
p_tm->tm_sec += p_ldate->lt_gmtoff * (15 * 60);
|
||
|
||
/* Recompute tm_wday and tm_yday via mktime. mktime will also renormalize
|
||
date values to account for the timezone offset. */
|
||
{
|
||
time_t t;
|
||
struct tm temp_tm;
|
||
char *old_tzname=getenv("TZ");
|
||
char psz_gmt_tzset[]="TZ=GMT";
|
||
|
||
/* Put old_tzname at the beginning of the environment string,
|
||
so it can be restored as is with putenv. */
|
||
if (old_tzname)
|
||
old_tzname -= sizeof("TZ=")-1;
|
||
|
||
putenv(psz_gmt_tzset);
|
||
tzset();
|
||
t = mktime(p_tm);
|
||
gmtime_r(&t, &temp_tm);
|
||
if (old_tzname)
|
||
putenv(old_tzname);
|
||
else
|
||
unsetenv("TZ");
|
||
|
||
p_tm->tm_wday = temp_tm.tm_wday;
|
||
p_tm->tm_yday = temp_tm.tm_yday;
|
||
}
|
||
return true;
|
||
}
|
||
|
||
|
||
/*!
|
||
Set time in format used in ISO 9660 directory index record
|
||
from a Unix time structure. */
|
||
void
|
||
iso9660_set_dtime (const struct tm *p_tm, /*out*/ iso9660_dtime_t *p_idr_date)
|
||
{
|
||
memset (p_idr_date, 0, 7);
|
||
|
||
if (!p_tm) return;
|
||
|
||
p_idr_date->dt_year = p_tm->tm_year;
|
||
p_idr_date->dt_month = p_tm->tm_mon + 1;
|
||
p_idr_date->dt_day = p_tm->tm_mday;
|
||
p_idr_date->dt_hour = p_tm->tm_hour;
|
||
p_idr_date->dt_minute = p_tm->tm_min;
|
||
p_idr_date->dt_second = p_tm->tm_sec;
|
||
|
||
#ifdef HAVE_TM_GMTOFF
|
||
/* The ISO 9660 timezone is in the range -48..+52 and each unit
|
||
represents a 15-minute interval. */
|
||
p_idr_date->dt_gmtoff = p_tm->tm_gmtoff / (15 * 60);
|
||
|
||
if (p_tm->tm_isdst > 0) p_idr_date->dt_gmtoff -= 4;
|
||
|
||
if (p_idr_date->dt_gmtoff < -48 ) {
|
||
|
||
cdio_warn ("Converted ISO 9660 timezone %d is less than -48. Adjusted",
|
||
p_idr_date->dt_gmtoff);
|
||
p_idr_date->dt_gmtoff = -48;
|
||
} else if (p_idr_date->dt_gmtoff > 52) {
|
||
cdio_warn ("Converted ISO 9660 timezone %d is over 52. Adjusted",
|
||
p_idr_date->dt_gmtoff);
|
||
p_idr_date->dt_gmtoff = 52;
|
||
}
|
||
#else
|
||
p_idr_date->dt_gmtoff = 0;
|
||
#endif
|
||
}
|
||
|
||
/*!
|
||
Set "long" time in format used in ISO 9660 primary volume descriptor
|
||
from a Unix time structure. */
|
||
void
|
||
iso9660_set_ltime (const struct tm *p_tm, /*out*/ iso9660_ltime_t *pvd_date)
|
||
{
|
||
char *_pvd_date = (char *) pvd_date;
|
||
|
||
memset (_pvd_date, '0', 16);
|
||
pvd_date->lt_gmtoff = (iso712_t) 0; /* Start out with time zone GMT. */
|
||
|
||
if (!p_tm) return;
|
||
|
||
snprintf(_pvd_date, 17,
|
||
"%4.4d%2.2d%2.2d" "%2.2d%2.2d%2.2d" "%2.2d",
|
||
p_tm->tm_year + 1900, p_tm->tm_mon + 1, p_tm->tm_mday,
|
||
p_tm->tm_hour, p_tm->tm_min, p_tm->tm_sec,
|
||
0 /* 1/100 secs */ );
|
||
|
||
/* Adjust for daylight savings time. */
|
||
if (p_tm->tm_isdst > 0) _pvd_date[16] -= (iso712_t) 4;
|
||
|
||
#ifdef HAVE_TM_GMTOFF
|
||
/* Set time zone in 15-minute interval encoding. */
|
||
pvd_date->lt_gmtoff -= p_tm->tm_gmtoff / (15 * 60);
|
||
if (pvd_date->lt_gmtoff < -48 ) {
|
||
|
||
cdio_warn ("Converted ISO 9660 timezone %d is less than -48. Adjusted",
|
||
(int) pvd_date->lt_gmtoff);
|
||
pvd_date->lt_gmtoff = -48;
|
||
} else if (pvd_date->lt_gmtoff > 52) {
|
||
cdio_warn ("Converted ISO 9660 timezone %d is over 52. Adjusted",
|
||
(int) pvd_date->lt_gmtoff);
|
||
pvd_date->lt_gmtoff = 52;
|
||
}
|
||
#endif
|
||
|
||
}
|
||
|
||
/*!
|
||
Convert an ISO-9660 file name which is in the format usually stored
|
||
in a ISO 9660 directory entry into what's usually listed as the
|
||
file name in a listing. Lowercase name, and remove trailing ;1's
|
||
or .;1's and turn the other ;'s into version numbers.
|
||
|
||
@param psz_oldname the ISO-9660 filename to be translated.
|
||
@param psz_newname returned string. The caller allocates this and
|
||
it should be at least the size of psz_oldname.
|
||
@return length of the translated string is returned. It will be no greater
|
||
than the length of psz_oldname.
|
||
*/
|
||
int
|
||
iso9660_name_translate(const char *psz_oldname, char *psz_newname)
|
||
{
|
||
return iso9660_name_translate_ext(psz_oldname, psz_newname, 0);
|
||
}
|
||
|
||
/*!
|
||
Convert an ISO-9660 file name which is in the format usually stored
|
||
in a ISO 9660 directory entry into what's usually listed as the
|
||
file name in a listing. Lowercase name if no Joliet Extension
|
||
interpretation. Remove trailing ;1's or .;1's and turn the other
|
||
;'s into version numbers.
|
||
|
||
@param psz_oldname the ISO-9660 filename to be translated.
|
||
@param psz_newname returned string. The caller allocates this and
|
||
it should be at least the size of psz_oldname.
|
||
@param i_joliet_level 0 if not using Joliet Extension. Otherwise the
|
||
Joliet level.
|
||
@return length of the translated string is returned. It will be no greater
|
||
than the length of psz_oldname.
|
||
*/
|
||
int
|
||
iso9660_name_translate_ext(const char *psz_oldname, char *psz_newname,
|
||
uint8_t i_joliet_level)
|
||
{
|
||
int len = strlen(psz_oldname);
|
||
int i;
|
||
|
||
if (0 == len) return 0;
|
||
for (i = 0; i < len; i++) {
|
||
unsigned char c = psz_oldname[i];
|
||
if (!c)
|
||
break;
|
||
|
||
/* Lower case, unless we have Joliet extensions. */
|
||
if (!i_joliet_level && isupper(c)) c = tolower(c);
|
||
|
||
/* Drop trailing '.;1' (ISO 9660:1988 7.5.1 requires period) */
|
||
if (c == '.' && i == len - 3
|
||
&& psz_oldname[i + 1] == ';' && psz_oldname[i + 2] == '1')
|
||
break;
|
||
|
||
/* Drop trailing ';1' */
|
||
if (c == ';' && i == len - 2 && psz_oldname[i + 1] == '1')
|
||
break;
|
||
|
||
/* Convert remaining ';' to '.' */
|
||
if (c == ';')
|
||
c = '.';
|
||
|
||
psz_newname[i] = c;
|
||
}
|
||
psz_newname[i] = '\0';
|
||
return i;
|
||
}
|
||
|
||
/*!
|
||
Pad string src with spaces to size len and copy this to dst. If
|
||
len is less than the length of src, dst will be truncated to the
|
||
first len characters of src.
|
||
|
||
src can also be scanned to see if it contains only ACHARs, DCHARs,
|
||
7-bit ASCII chars depending on the enumeration _check.
|
||
|
||
In addition to getting changed, dst is the return value.
|
||
Note: this string might not be NULL terminated.
|
||
*/
|
||
char *
|
||
iso9660_strncpy_pad(char dst[], const char src[], size_t len,
|
||
enum strncpy_pad_check _check)
|
||
{
|
||
size_t rlen;
|
||
|
||
cdio_assert (dst != NULL);
|
||
cdio_assert (src != NULL);
|
||
cdio_assert (len > 0);
|
||
|
||
switch (_check)
|
||
{
|
||
int idx;
|
||
case ISO9660_NOCHECK:
|
||
break;
|
||
|
||
case ISO9660_7BIT:
|
||
for (idx = 0; src[idx]; idx++)
|
||
if ((int8_t) src[idx] < 0)
|
||
{
|
||
cdio_warn ("string '%s' fails 7bit constraint (pos = %d)",
|
||
src, idx);
|
||
break;
|
||
}
|
||
break;
|
||
|
||
case ISO9660_ACHARS:
|
||
for (idx = 0; src[idx]; idx++)
|
||
if (!iso9660_is_achar (src[idx]))
|
||
{
|
||
cdio_warn ("string '%s' fails a-character constraint (pos = %d)",
|
||
src, idx);
|
||
break;
|
||
}
|
||
break;
|
||
|
||
case ISO9660_DCHARS:
|
||
for (idx = 0; src[idx]; idx++)
|
||
if (!iso9660_is_dchar (src[idx]))
|
||
{
|
||
cdio_warn ("string '%s' fails d-character constraint (pos = %d)",
|
||
src, idx);
|
||
break;
|
||
}
|
||
break;
|
||
|
||
default:
|
||
cdio_assert_not_reached ();
|
||
break;
|
||
}
|
||
|
||
rlen = strlen (src);
|
||
|
||
if (rlen > len)
|
||
cdio_warn ("string '%s' is getting truncated to %d characters",
|
||
src, (unsigned int) len);
|
||
|
||
strncpy (dst, src, len);
|
||
if (rlen < len)
|
||
memset(dst+rlen, ' ', len-rlen);
|
||
return dst;
|
||
}
|
||
|
||
/*!
|
||
Return true if c is a DCHAR - a valid ISO-9660 level 1 character.
|
||
These are the ASCSII capital letters A-Z, the digits 0-9 and an
|
||
underscore.
|
||
*/
|
||
bool
|
||
iso9660_is_dchar (int c)
|
||
{
|
||
if (!IN (c, 0x30, 0x5f)
|
||
|| IN (c, 0x3a, 0x40)
|
||
|| IN (c, 0x5b, 0x5e))
|
||
return false;
|
||
|
||
return true;
|
||
}
|
||
|
||
|
||
/*!
|
||
Return true if c is an ACHAR -
|
||
These are the DCHAR's plus some ASCII symbols including the space
|
||
symbol.
|
||
*/
|
||
bool
|
||
iso9660_is_achar (int c)
|
||
{
|
||
if (!IN (c, 0x20, 0x5f)
|
||
|| IN (c, 0x23, 0x24)
|
||
|| c == 0x40
|
||
|| IN (c, 0x5b, 0x5e))
|
||
return false;
|
||
|
||
return true;
|
||
}
|
||
|
||
void
|
||
iso9660_set_evd(void *pd)
|
||
{
|
||
iso_volume_descriptor_t ied;
|
||
|
||
cdio_assert (sizeof(iso_volume_descriptor_t) == ISO_BLOCKSIZE);
|
||
|
||
cdio_assert (pd != NULL);
|
||
|
||
memset(&ied, 0, sizeof(ied));
|
||
|
||
ied.type = to_711(ISO_VD_END);
|
||
iso9660_strncpy_pad (ied.id, ISO_STANDARD_ID, sizeof(ied.id),
|
||
ISO9660_DCHARS);
|
||
ied.version = to_711(ISO_VERSION);
|
||
|
||
memcpy(pd, &ied, sizeof(ied));
|
||
}
|
||
|
||
void
|
||
iso9660_set_pvd(void *pd,
|
||
const char volume_id[],
|
||
const char publisher_id[],
|
||
const char preparer_id[],
|
||
const char application_id[],
|
||
uint32_t iso_size,
|
||
const void *root_dir,
|
||
uint32_t path_table_l_extent,
|
||
uint32_t path_table_m_extent,
|
||
uint32_t path_table_size,
|
||
const time_t *pvd_time
|
||
)
|
||
{
|
||
iso9660_pvd_t ipd;
|
||
|
||
cdio_assert (sizeof(iso9660_pvd_t) == ISO_BLOCKSIZE);
|
||
|
||
cdio_assert (pd != NULL);
|
||
cdio_assert (volume_id != NULL);
|
||
cdio_assert (application_id != NULL);
|
||
|
||
memset(&ipd,0,sizeof(ipd)); /* paranoia? */
|
||
|
||
/* magic stuff ... thatis CD XA marker... */
|
||
strncpy(((char*)&ipd)+ISO_XA_MARKER_OFFSET, ISO_XA_MARKER_STRING,
|
||
sizeof(ISO_XA_MARKER_STRING));
|
||
|
||
ipd.type = to_711(ISO_VD_PRIMARY);
|
||
iso9660_strncpy_pad (ipd.id, ISO_STANDARD_ID, 5, ISO9660_DCHARS);
|
||
ipd.version = to_711(ISO_VERSION);
|
||
|
||
iso9660_strncpy_pad (ipd.system_id, SYSTEM_ID, 32, ISO9660_ACHARS);
|
||
iso9660_strncpy_pad (ipd.volume_id, volume_id, 32, ISO9660_DCHARS);
|
||
|
||
ipd.volume_space_size = to_733(iso_size);
|
||
|
||
ipd.volume_set_size = to_723(1);
|
||
ipd.volume_sequence_number = to_723(1);
|
||
ipd.logical_block_size = to_723(ISO_BLOCKSIZE);
|
||
|
||
ipd.path_table_size = to_733(path_table_size);
|
||
ipd.type_l_path_table = to_731(path_table_l_extent);
|
||
ipd.type_m_path_table = to_732(path_table_m_extent);
|
||
|
||
/* root_directory_record doesn't contain the 1-byte filename,
|
||
so we add one for that. */
|
||
cdio_assert (sizeof(ipd.root_directory_record) == 33);
|
||
memcpy(&(ipd.root_directory_record), root_dir,
|
||
sizeof(ipd.root_directory_record));
|
||
ipd.root_directory_filename='\0';
|
||
ipd.root_directory_record.length = sizeof(ipd.root_directory_record)+1;
|
||
iso9660_strncpy_pad (ipd.volume_set_id, VOLUME_SET_ID,
|
||
ISO_MAX_VOLUMESET_ID, ISO9660_DCHARS);
|
||
|
||
iso9660_strncpy_pad (ipd.publisher_id, publisher_id, ISO_MAX_PUBLISHER_ID,
|
||
ISO9660_ACHARS);
|
||
iso9660_strncpy_pad (ipd.preparer_id, preparer_id, ISO_MAX_PREPARER_ID,
|
||
ISO9660_ACHARS);
|
||
iso9660_strncpy_pad (ipd.application_id, application_id,
|
||
ISO_MAX_APPLICATION_ID, ISO9660_ACHARS);
|
||
|
||
iso9660_strncpy_pad (ipd.copyright_file_id , "", 37, ISO9660_DCHARS);
|
||
iso9660_strncpy_pad (ipd.abstract_file_id , "", 37, ISO9660_DCHARS);
|
||
iso9660_strncpy_pad (ipd.bibliographic_file_id, "", 37, ISO9660_DCHARS);
|
||
|
||
iso9660_set_ltime (gmtime (pvd_time), &(ipd.creation_date));
|
||
iso9660_set_ltime (gmtime (pvd_time), &(ipd.modification_date));
|
||
iso9660_set_ltime (NULL, &(ipd.expiration_date));
|
||
iso9660_set_ltime (NULL, &(ipd.effective_date));
|
||
|
||
ipd.file_structure_version = to_711(1);
|
||
|
||
/* we leave ipd.application_data = 0 */
|
||
|
||
memcpy(pd, &ipd, sizeof(ipd)); /* copy stuff to arg ptr */
|
||
}
|
||
|
||
unsigned int
|
||
iso9660_dir_calc_record_size(unsigned int namelen, unsigned int su_len)
|
||
{
|
||
unsigned int length;
|
||
|
||
length = sizeof(iso9660_dir_t);
|
||
length += namelen;
|
||
if (length % 2) /* pad to word boundary */
|
||
length++;
|
||
length += su_len;
|
||
if (length % 2) /* pad to word boundary again */
|
||
length++;
|
||
|
||
return length;
|
||
}
|
||
|
||
void
|
||
iso9660_dir_add_entry_su(void *dir,
|
||
const char filename[],
|
||
uint32_t extent,
|
||
uint32_t size,
|
||
uint8_t file_flags,
|
||
const void *su_data,
|
||
unsigned int su_size,
|
||
const time_t *entry_time)
|
||
{
|
||
iso9660_dir_t *idr = dir;
|
||
uint8_t *dir8 = dir;
|
||
unsigned int offset = 0;
|
||
uint32_t dsize = from_733(idr->size);
|
||
int length, su_offset;
|
||
struct tm temp_tm;
|
||
cdio_assert (sizeof(iso9660_dir_t) == 33);
|
||
|
||
if (!dsize && !idr->length)
|
||
dsize = ISO_BLOCKSIZE; /* for when dir lacks '.' entry */
|
||
|
||
cdio_assert (dsize > 0 && !(dsize % ISO_BLOCKSIZE));
|
||
cdio_assert (dir != NULL);
|
||
cdio_assert (extent > 17);
|
||
cdio_assert (filename != NULL);
|
||
cdio_assert (strlen(filename) <= MAX_ISOPATHNAME);
|
||
|
||
length = sizeof(iso9660_dir_t);
|
||
length += strlen(filename);
|
||
length = _cdio_ceil2block (length, 2); /* pad to word boundary */
|
||
su_offset = length;
|
||
length += su_size;
|
||
length = _cdio_ceil2block (length, 2); /* pad to word boundary again */
|
||
|
||
/* find the last entry's end */
|
||
{
|
||
unsigned int ofs_last_rec = 0;
|
||
|
||
offset = 0;
|
||
while (offset < dsize)
|
||
{
|
||
if (!dir8[offset])
|
||
{
|
||
offset++;
|
||
continue;
|
||
}
|
||
|
||
offset += dir8[offset];
|
||
ofs_last_rec = offset;
|
||
}
|
||
|
||
cdio_assert (offset == dsize);
|
||
|
||
offset = ofs_last_rec;
|
||
}
|
||
|
||
/* be sure we don't cross sectors boundaries */
|
||
offset = _cdio_ofs_add (offset, length, ISO_BLOCKSIZE);
|
||
offset -= length;
|
||
|
||
cdio_assert (offset + length <= dsize);
|
||
|
||
idr = (iso9660_dir_t *) &dir8[offset];
|
||
|
||
cdio_assert (offset+length < dsize);
|
||
|
||
memset(idr, 0, length);
|
||
|
||
idr->length = to_711(length);
|
||
idr->extent = to_733(extent);
|
||
idr->size = to_733(size);
|
||
|
||
gmtime_r(entry_time, &temp_tm);
|
||
iso9660_set_dtime (&temp_tm, &(idr->recording_time));
|
||
|
||
idr->file_flags = to_711(file_flags);
|
||
|
||
idr->volume_sequence_number = to_723(1);
|
||
|
||
idr->filename_len = to_711(strlen(filename)
|
||
? strlen(filename) : 1); /* working hack! */
|
||
|
||
memcpy(idr->filename, filename, from_711(idr->filename_len));
|
||
memcpy(&dir8[offset] + su_offset, su_data, su_size);
|
||
}
|
||
|
||
void
|
||
iso9660_dir_init_new (void *dir,
|
||
uint32_t self,
|
||
uint32_t ssize,
|
||
uint32_t parent,
|
||
uint32_t psize,
|
||
const time_t *dir_time)
|
||
{
|
||
iso9660_dir_init_new_su (dir, self, ssize, NULL, 0, parent, psize, NULL,
|
||
0, dir_time);
|
||
}
|
||
|
||
void
|
||
iso9660_dir_init_new_su (void *dir,
|
||
uint32_t self,
|
||
uint32_t ssize,
|
||
const void *ssu_data,
|
||
unsigned int ssu_size,
|
||
uint32_t parent,
|
||
uint32_t psize,
|
||
const void *psu_data,
|
||
unsigned int psu_size,
|
||
const time_t *dir_time)
|
||
{
|
||
cdio_assert (ssize > 0 && !(ssize % ISO_BLOCKSIZE));
|
||
cdio_assert (psize > 0 && !(psize % ISO_BLOCKSIZE));
|
||
cdio_assert (dir != NULL);
|
||
|
||
memset (dir, 0, ssize);
|
||
|
||
/* "\0" -- working hack due to padding */
|
||
iso9660_dir_add_entry_su (dir, "\0", self, ssize, ISO_DIRECTORY, ssu_data,
|
||
ssu_size, dir_time);
|
||
|
||
iso9660_dir_add_entry_su (dir, "\1", parent, psize, ISO_DIRECTORY, psu_data,
|
||
psu_size, dir_time);
|
||
}
|
||
|
||
/* Zero's out pathable. Do this first. */
|
||
void
|
||
iso9660_pathtable_init (void *pt)
|
||
{
|
||
cdio_assert (sizeof (iso_path_table_t) == 8);
|
||
|
||
cdio_assert (pt != NULL);
|
||
|
||
memset (pt, 0, ISO_BLOCKSIZE); /* fixme */
|
||
}
|
||
|
||
/*!
|
||
Returns POSIX mode bitstring for a given file.
|
||
*/
|
||
mode_t
|
||
iso9660_get_posix_filemode(const iso9660_stat_t *p_iso_dirent)
|
||
{
|
||
mode_t mode = 0;
|
||
|
||
if (yep == p_iso_dirent->rr.b3_rock) {
|
||
return iso9660_get_posix_filemode_from_rock(&p_iso_dirent->rr);
|
||
} else if (p_iso_dirent->b_xa) {
|
||
return iso9660_get_posix_filemode_from_xa(p_iso_dirent->xa.attributes);
|
||
}
|
||
return mode;
|
||
}
|
||
|
||
static const iso_path_table_t *
|
||
pathtable_get_entry (const void *pt, unsigned int entrynum)
|
||
{
|
||
const uint8_t *tmp = pt;
|
||
unsigned int offset = 0;
|
||
unsigned int count = 0;
|
||
|
||
cdio_assert (pt != NULL);
|
||
|
||
while (from_711 (*tmp))
|
||
{
|
||
if (count == entrynum)
|
||
break;
|
||
|
||
cdio_assert (count < entrynum);
|
||
|
||
offset += sizeof (iso_path_table_t);
|
||
offset += from_711 (*tmp);
|
||
if (offset % 2)
|
||
offset++;
|
||
tmp = (uint8_t *)pt + offset;
|
||
count++;
|
||
}
|
||
|
||
if (!from_711 (*tmp))
|
||
return NULL;
|
||
|
||
return (const void *) tmp;
|
||
}
|
||
|
||
void
|
||
pathtable_get_size_and_entries (const void *pt,
|
||
unsigned int *size,
|
||
unsigned int *entries)
|
||
{
|
||
const uint8_t *tmp = pt;
|
||
unsigned int offset = 0;
|
||
unsigned int count = 0;
|
||
|
||
cdio_assert (pt != NULL);
|
||
|
||
while (from_711 (*tmp))
|
||
{
|
||
offset += sizeof (iso_path_table_t);
|
||
offset += from_711 (*tmp);
|
||
if (offset % 2)
|
||
offset++;
|
||
tmp = (uint8_t *)pt + offset;
|
||
count++;
|
||
}
|
||
|
||
if (size)
|
||
*size = offset;
|
||
|
||
if (entries)
|
||
*entries = count;
|
||
}
|
||
|
||
unsigned int
|
||
iso9660_pathtable_get_size (const void *pt)
|
||
{
|
||
unsigned int size = 0;
|
||
pathtable_get_size_and_entries (pt, &size, NULL);
|
||
return size;
|
||
}
|
||
|
||
uint16_t
|
||
iso9660_pathtable_l_add_entry (void *pt,
|
||
const char name[],
|
||
uint32_t extent,
|
||
uint16_t parent)
|
||
{
|
||
iso_path_table_t *ipt =
|
||
(iso_path_table_t *)((char *)pt + iso9660_pathtable_get_size (pt));
|
||
size_t name_len = strlen (name) ? strlen (name) : 1;
|
||
unsigned int entrynum = 0;
|
||
|
||
cdio_assert (iso9660_pathtable_get_size (pt) < ISO_BLOCKSIZE); /*fixme */
|
||
|
||
memset (ipt, 0, sizeof (iso_path_table_t) + name_len); /* paranoia */
|
||
|
||
ipt->name_len = to_711 (name_len);
|
||
ipt->extent = to_731 (extent);
|
||
ipt->parent = to_721 (parent);
|
||
memcpy (ipt->name, name, name_len);
|
||
|
||
pathtable_get_size_and_entries (pt, NULL, &entrynum);
|
||
|
||
if (entrynum > 1)
|
||
{
|
||
const iso_path_table_t *ipt2
|
||
= pathtable_get_entry (pt, entrynum - 2);
|
||
|
||
cdio_assert (ipt2 != NULL);
|
||
|
||
cdio_assert (from_721 (ipt2->parent) <= parent);
|
||
}
|
||
|
||
return entrynum;
|
||
}
|
||
|
||
uint16_t
|
||
iso9660_pathtable_m_add_entry (void *pt,
|
||
const char name[],
|
||
uint32_t extent,
|
||
uint16_t parent)
|
||
{
|
||
iso_path_table_t *ipt =
|
||
(iso_path_table_t *)((char *)pt + iso9660_pathtable_get_size (pt));
|
||
size_t name_len = strlen (name) ? strlen (name) : 1;
|
||
unsigned int entrynum = 0;
|
||
|
||
cdio_assert (iso9660_pathtable_get_size(pt) < ISO_BLOCKSIZE); /* fixme */
|
||
|
||
memset(ipt, 0, sizeof (iso_path_table_t) + name_len); /* paranoia */
|
||
|
||
ipt->name_len = to_711 (name_len);
|
||
ipt->extent = to_732 (extent);
|
||
ipt->parent = to_722 (parent);
|
||
memcpy (ipt->name, name, name_len);
|
||
|
||
pathtable_get_size_and_entries (pt, NULL, &entrynum);
|
||
|
||
if (entrynum > 1)
|
||
{
|
||
const iso_path_table_t *ipt2
|
||
= pathtable_get_entry (pt, entrynum - 2);
|
||
|
||
cdio_assert (ipt2 != NULL);
|
||
|
||
cdio_assert (from_722 (ipt2->parent) <= parent);
|
||
}
|
||
|
||
return entrynum;
|
||
}
|
||
|
||
/*!
|
||
Check that pathname is a valid ISO-9660 directory name.
|
||
|
||
A valid directory name should not start out with a slash (/),
|
||
dot (.) or null byte, should be less than 37 characters long,
|
||
have no more than 8 characters in a directory component
|
||
which is separated by a /, and consist of only DCHARs.
|
||
*/
|
||
bool
|
||
iso9660_dirname_valid_p (const char pathname[])
|
||
{
|
||
const char *p = pathname;
|
||
int len;
|
||
|
||
cdio_assert (pathname != NULL);
|
||
|
||
if (*p == '/' || *p == '.' || *p == '\0')
|
||
return false;
|
||
|
||
if (strlen (pathname) > MAX_ISOPATHNAME)
|
||
return false;
|
||
|
||
len = 0;
|
||
for (; *p; p++)
|
||
if (iso9660_is_dchar (*p))
|
||
{
|
||
len++;
|
||
if (len > 8)
|
||
return false;
|
||
}
|
||
else if (*p == '/')
|
||
{
|
||
if (!len)
|
||
return false;
|
||
len = 0;
|
||
}
|
||
else
|
||
return false; /* unexpected char */
|
||
|
||
if (!len)
|
||
return false; /* last char may not be '/' */
|
||
|
||
return true;
|
||
}
|
||
|
||
/*!
|
||
Check that pathname is a valid ISO-9660 pathname.
|
||
|
||
A valid pathname contains a valid directory name, if one appears and
|
||
the filename portion should be no more than 8 characters for the
|
||
file prefix and 3 characters in the extension (or portion after a
|
||
dot). There should be exactly one dot somewhere in the filename
|
||
portion and the filename should be composed of only DCHARs.
|
||
|
||
True is returned if pathname is valid.
|
||
*/
|
||
bool
|
||
iso9660_pathname_valid_p (const char pathname[])
|
||
{
|
||
const char *p = NULL;
|
||
|
||
cdio_assert (pathname != NULL);
|
||
|
||
if ((p = strrchr (pathname, '/')))
|
||
{
|
||
bool rc;
|
||
char *_tmp = strdup (pathname);
|
||
|
||
*strrchr (_tmp, '/') = '\0';
|
||
|
||
rc = iso9660_dirname_valid_p (_tmp);
|
||
|
||
free (_tmp);
|
||
|
||
if (!rc)
|
||
return false;
|
||
|
||
p++;
|
||
}
|
||
else
|
||
p = pathname;
|
||
|
||
if (strlen (pathname) > (MAX_ISOPATHNAME - 6))
|
||
return false;
|
||
|
||
{
|
||
int len = 0;
|
||
int dots = 0;
|
||
|
||
for (; *p; p++)
|
||
if (iso9660_is_dchar (*p))
|
||
{
|
||
len++;
|
||
if (dots == 0 ? len > 8 : len > 3)
|
||
return false;
|
||
}
|
||
else if (*p == '.')
|
||
{
|
||
dots++;
|
||
if (dots > 1)
|
||
return false;
|
||
if (!len)
|
||
return false;
|
||
len = 0;
|
||
}
|
||
else
|
||
return false;
|
||
|
||
if (dots != 1)
|
||
return false;
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
/*!
|
||
Take pathname and a version number and turn that into a ISO-9660
|
||
pathname. (That's just the pathname followd by ";" and the version
|
||
number. For example, mydir/file.ext -> mydir/file.ext;1 for version
|
||
1. The resulting ISO-9660 pathname is returned.
|
||
*/
|
||
char *
|
||
iso9660_pathname_isofy (const char pathname[], uint16_t version)
|
||
{
|
||
char tmpbuf[1024] = { 0, };
|
||
|
||
cdio_assert (strlen (pathname) < (sizeof (tmpbuf) - sizeof (";65535")));
|
||
|
||
snprintf (tmpbuf, sizeof(tmpbuf), "%s;%d", pathname, version);
|
||
|
||
return strdup (tmpbuf);
|
||
}
|
||
|
||
/*!
|
||
Return the PVD's application ID.
|
||
NULL is returned if there is some problem in getting this.
|
||
*/
|
||
char *
|
||
iso9660_get_application_id(iso9660_pvd_t *p_pvd)
|
||
{
|
||
if (NULL==p_pvd) return NULL;
|
||
return strdup(strip_trail(p_pvd->application_id, ISO_MAX_APPLICATION_ID));
|
||
}
|
||
|
||
#if FIXME
|
||
lsn_t
|
||
iso9660_get_dir_extent(const iso9660_dir_t *idr)
|
||
{
|
||
if (NULL == idr) return 0;
|
||
return from_733(idr->extent);
|
||
}
|
||
#endif
|
||
|
||
uint8_t
|
||
iso9660_get_dir_len(const iso9660_dir_t *idr)
|
||
{
|
||
if (NULL == idr) return 0;
|
||
return idr->length;
|
||
}
|
||
|
||
#if FIXME
|
||
uint8_t
|
||
iso9660_get_dir_size(const iso9660_dir_t *idr)
|
||
{
|
||
if (NULL == idr) return 0;
|
||
return from_733(idr->size);
|
||
}
|
||
#endif
|
||
|
||
uint8_t
|
||
iso9660_get_pvd_type(const iso9660_pvd_t *pvd)
|
||
{
|
||
if (NULL == pvd) return 255;
|
||
return(pvd->type);
|
||
}
|
||
|
||
const char *
|
||
iso9660_get_pvd_id(const iso9660_pvd_t *pvd)
|
||
{
|
||
if (NULL == pvd) return "ERR";
|
||
return(pvd->id);
|
||
}
|
||
|
||
int
|
||
iso9660_get_pvd_space_size(const iso9660_pvd_t *pvd)
|
||
{
|
||
if (NULL == pvd) return 0;
|
||
return from_733(pvd->volume_space_size);
|
||
}
|
||
|
||
int
|
||
iso9660_get_pvd_block_size(const iso9660_pvd_t *pvd)
|
||
{
|
||
if (NULL == pvd) return 0;
|
||
return from_723(pvd->logical_block_size);
|
||
}
|
||
|
||
/*! Return the primary volume id version number (of pvd).
|
||
If there is an error 0 is returned.
|
||
*/
|
||
int
|
||
iso9660_get_pvd_version(const iso9660_pvd_t *pvd)
|
||
{
|
||
if (NULL == pvd) return 0;
|
||
return pvd->version;
|
||
}
|
||
|
||
/*! Return the LSN of the root directory for pvd.
|
||
If there is an error CDIO_INVALID_LSN is returned.
|
||
*/
|
||
lsn_t
|
||
iso9660_get_root_lsn(const iso9660_pvd_t *pvd)
|
||
{
|
||
if (NULL == pvd)
|
||
return CDIO_INVALID_LSN;
|
||
else {
|
||
const iso9660_dir_t *idr = &(pvd->root_directory_record);
|
||
if (NULL == idr) return CDIO_INVALID_LSN;
|
||
return(from_733 (idr->extent));
|
||
}
|
||
}
|
||
|
||
/*!
|
||
Return a string containing the preparer id with trailing
|
||
blanks removed.
|
||
*/
|
||
char *
|
||
iso9660_get_preparer_id(const iso9660_pvd_t *pvd)
|
||
{
|
||
if (NULL==pvd) return NULL;
|
||
return strdup(strip_trail(pvd->preparer_id, ISO_MAX_PREPARER_ID));
|
||
}
|
||
|
||
/*!
|
||
Return a string containing the publisher id with trailing
|
||
blanks removed.
|
||
*/
|
||
char *
|
||
iso9660_get_publisher_id(const iso9660_pvd_t *pvd)
|
||
{
|
||
if (NULL==pvd) return NULL;
|
||
return strdup(strip_trail(pvd->publisher_id, ISO_MAX_PUBLISHER_ID));
|
||
}
|
||
|
||
/*!
|
||
Return a string containing the PVD's system id with trailing
|
||
blanks removed.
|
||
*/
|
||
char *
|
||
iso9660_get_system_id(const iso9660_pvd_t *pvd)
|
||
{
|
||
if (NULL==pvd) return NULL;
|
||
return strdup(strip_trail(pvd->system_id, ISO_MAX_SYSTEM_ID));
|
||
}
|
||
|
||
/*!
|
||
Return the PVD's volume ID.
|
||
*/
|
||
char *
|
||
iso9660_get_volume_id(const iso9660_pvd_t *pvd)
|
||
{
|
||
if (NULL == pvd) return NULL;
|
||
return strdup(strip_trail(pvd->volume_id, ISO_MAX_VOLUME_ID));
|
||
}
|
||
|
||
/*!
|
||
Return the PVD's volumeset ID.
|
||
NULL is returned if there is some problem in getting this.
|
||
*/
|
||
char *
|
||
iso9660_get_volumeset_id(const iso9660_pvd_t *pvd)
|
||
{
|
||
if ( NULL == pvd ) return NULL;
|
||
return strdup(strip_trail(pvd->volume_set_id, ISO_MAX_VOLUMESET_ID));
|
||
}
|
||
|
||
|
||
/*
|
||
* Local variables:
|
||
* c-file-style: "gnu"
|
||
* tab-width: 8
|
||
* indent-tabs-mode: nil
|
||
* End:
|
||
*/
|