[unix-history] / sys / isofs / isofs_rrip.c

/*
 * Copyright (c) 1993 Atsushi Murai (amurai@spec.co.jp)
 * 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.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY Atsushi Murai(amurai@spec.co.jp)``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 REGENTS OR CONTRIBUTORS 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.
 *
 *	$Id: isofs_rrip.c,v 1.4 1993/11/25 01:32:27 wollman Exp $
 */

#include "param.h"
#include "systm.h"
#include "namei.h"
#include "buf.h"
#include "file.h"
#include "vnode.h"
#include "mount.h"
#include "kernel.h"

#include "sys/time.h"

#include "iso.h"
#include "isofs_node.h"
#include "isofs_rrip.h"
#include "iso_rrip.h"

/*
 * POSIX file attribute
 */
static int isofs_rrip_attr( p, ana )
	ISO_RRIP_ATTR	 *p;
	ISO_RRIP_ANALYZE *ana;
{
	ana->inode.iso_mode  = isonum_731(p->mode_l);
	ana->inode.iso_uid   = (uid_t)isonum_731(p->uid_l);
	ana->inode.iso_gid   = (gid_t)isonum_731(p->gid_l);
/*	ana->inode.iso_links = isonum_731(p->links_l); */
	return 0;
}

int isofs_rrip_defattr(  isodir, ana )
	struct iso_directory_record 	*isodir;
	ISO_RRIP_ANALYZE 		*ana;
{
	ana->inode.iso_mode  = (VREAD|VEXEC|(VREAD|VEXEC)>>3|(VREAD|VEXEC)>>6);
	ana->inode.iso_uid   = (uid_t)0;
	ana->inode.iso_gid   = (gid_t)0;
	return 0;
}

/*
 * POSIX device modes
 */
static int isofs_rrip_device( p, ana )
	ISO_RRIP_DEVICE  *p;
	ISO_RRIP_ANALYZE *ana;
{
	char   buf[3];

	buf[0] = p->h.type[0];
	buf[1] = p->h.type[1];
	buf[2]	= 0x00;

	printf("isofs:%s[%d] high=0x%08x, low=0x%08x\n",
				buf,
				isonum_711(p->h.length),
				isonum_731(p->dev_t_high_l),
				isonum_731(p->dev_t_low_l)
					 );
	return 0;
}

/*
 * Symbolic Links
 */
static int isofs_rrip_slink( p, ana )
	ISO_RRIP_SLINK  *p;
	ISO_RRIP_ANALYZE *ana;
{
	return 0;
}

/*
 * Alternate name
 */
static int isofs_rrip_altname( p, ana )
	ISO_RRIP_ALTNAME *p;
	ISO_RRIP_ANALYZE *ana;
{
	return 0;
}

/*
 * Child Link
 */
static int isofs_rrip_clink( p, ana )
	ISO_RRIP_CLINK  *p;
	ISO_RRIP_ANALYZE *ana;
{
	char   buf[3];
	buf[0] = p->h.type[0];
	buf[1] = p->h.type[1];
	buf[2]	= 0x00;
	printf("isofs:%s[%d] loc=%d\n",
				buf,
				isonum_711(p->h.length),
				isonum_733(p->dir_loc)
							);
	ana->inode.iso_cln = isonum_733(p->dir_loc);
	return 0;
}

/*
 * Parent Link
 */
static int isofs_rrip_plink( p, ana )
ISO_RRIP_PLINK  *p;
ISO_RRIP_ANALYZE *ana;
{

	char   buf[3];
	buf[0] = p->h.type[0];
	buf[1] = p->h.type[1];
	buf[2]	= 0x00;
	printf("isofs:%s[%d] loc=%d\n",
				buf,
				isonum_711(p->h.length),
				isonum_733(p->dir_loc)
							);
	ana->inode.iso_pln = isonum_733(p->dir_loc);
	return 0;
}

/*
 * Relocated directory
 */
static int isofs_rrip_reldir( p, ana )
ISO_RRIP_RELDIR  *p;
ISO_RRIP_ANALYZE *ana;
{
	char   buf[3];

	buf[0] = p->h.type[0];
	buf[1] = p->h.type[1];
	buf[2]	= 0x00;

	printf("isofs:%s[%d]\n",buf, isonum_711(p->h.length) );
	return 0;
}

/*
 * Time stamp 
 */
static void isofs_rrip_tstamp_conv7(pi, pu)
char	         *pi;
struct timeval   *pu;
{
	int	 i;
	int	 crtime,days;
	int	 year,month,day,hour,minute,second,tz;

	year   = pi[0] - 70;
	month  = pi[1];
	day    = pi[2];
	hour   = pi[3];
	minute = pi[4];
	second = pi[5];
	tz     = pi[6];

	if (year < 0) {
		crtime = 0;
	} else {
		int monlen[12] = {31,28,31,30,31,30,31,31,30,31,30,31};
		days = year * 365;
		if (year > 2)
			days += (year+2) / 4;
		for (i = 1; i < month; i++)
			days += monlen[i-1];
		if (((year+2) % 4) == 0 && month > 2)
			days++;
		days += day - 1;
		crtime = ((((days * 24) + hour) * 60 + minute) * 60)
			+ second;

		/* sign extend */
		if (tz & 0x80)
			tz |= (-1 << 8);

		/* timezone offset is unreliable on some disks */
		if (-48 <= tz && tz <= 52)
			crtime += tz * 15 * 60;
	}
	pu->tv_sec  = crtime;
	pu->tv_usec = 0;
}


static unsigned isofs_chars2ui( begin, end )
unsigned char *begin;
unsigned char *end;
{
	unsigned rc=0;
	int 	 len; 
	int 	 wlen;
	static   int pow[]={ 1, 10, 100, 1000 };

	len = end - begin;
	wlen= len;
	for (; len >= 0; len -- ) {
		rc += ( *(begin+len) * pow[wlen - len] ); 
	}
	return( rc );
}
	
static void isofs_rrip_tstamp_conv17(pi, pu)
unsigned char *pi;
struct timeval   *pu;
{
	unsigned char	buf[7];

        /* year:"0001"-"9999" -> -1900  */
	buf[0]  =  (unsigned char)(isofs_chars2ui( &pi[0], &pi[3]) - 1900 );

	/* month: " 1"-"12"      -> 1 - 12 */
	buf[1]  =  (unsigned char)isofs_chars2ui( &pi[4], &pi[5]);

	/* day:   " 1"-"31"      -> 1 - 31 */
	buf[2]  =  isofs_chars2ui( &pi[6], &pi[7]);

  	/* hour:  " 0"-"23"      -> 0 - 23 */
	buf[3]  =  isofs_chars2ui( &pi[8], &pi[9]);

	/* minute:" 0"-"59"      -> 0 - 59 */
	buf[4]  =  isofs_chars2ui( &pi[10], &pi[11] );

	/* second:" 0"-"59"      -> 0 - 59 */
	buf[5]  =  isofs_chars2ui( &pi[12], &pi[13] );

	/* difference of GMT */
	buf[6]  =  pi[16];

	isofs_rrip_tstamp_conv7(buf, pu);
}

static int isofs_rrip_tstamp( p, ana )
ISO_RRIP_TSTAMP  *p;
ISO_RRIP_ANALYZE *ana;
{
	unsigned char *ptime;	

	ptime = p->time;

	/* Check a format of time stamp (7bytes/17bytes) */
	if ( !(*p->flags & ISO_SUSP_TSTAMP_FORM17 ) ) {
        		isofs_rrip_tstamp_conv7(ptime,    &ana->inode.iso_ctime );

			if ( *p->flags & ISO_SUSP_TSTAMP_MODIFY )
        			isofs_rrip_tstamp_conv7(ptime+7,    &ana->inode.iso_mtime );
			else
        			ana->inode.iso_mtime = ana->inode.iso_ctime;

			if ( *p->flags & ISO_SUSP_TSTAMP_ACCESS )
        			isofs_rrip_tstamp_conv7(ptime+14,   &ana->inode.iso_atime );
			else
        			ana->inode.iso_atime = ana->inode.iso_ctime;
	} else {
        		isofs_rrip_tstamp_conv17(ptime,    &ana->inode.iso_ctime );
			
			if ( *p->flags & ISO_SUSP_TSTAMP_MODIFY )
        			isofs_rrip_tstamp_conv17(ptime+17, &ana->inode.iso_mtime );
			else
        			ana->inode.iso_mtime = ana->inode.iso_ctime;

			if ( *p->flags & ISO_SUSP_TSTAMP_ACCESS )
        			isofs_rrip_tstamp_conv17(ptime+34, &ana->inode.iso_atime );
			else
        			ana->inode.iso_atime = ana->inode.iso_ctime;
	}
	return 0;
}

int isofs_rrip_deftstamp( isodir, ana )
	struct iso_directory_record  *isodir;
	ISO_RRIP_ANALYZE *ana;
{
       	isofs_rrip_tstamp_conv7(isodir->date, &ana->inode.iso_ctime );
	ana->inode.iso_atime = ana->inode.iso_ctime;
	ana->inode.iso_mtime = ana->inode.iso_ctime;
	return 0;
}


/*
 * Flag indicating
 *   Nothing to do....
 */
static int isofs_rrip_idflag( p, ana )
ISO_RRIP_IDFLAG  *p;
ISO_RRIP_ANALYZE *ana;
{
	char   buf[3];

	buf[0] = p->h.type[0];
	buf[1] = p->h.type[1];
	buf[2]	= 0x00;

	printf("isofs:%s[%d] idflag=0x%x\n",
				buf,
				isonum_711(p->h.length),
				p->flags );
	return 0;
}

/*
 * Extension reference
 *   Nothing to do....
 */
static int isofs_rrip_exflag( p, ana )
ISO_RRIP_EXFLAG  *p;
ISO_RRIP_ANALYZE *ana;
{
	char   buf[3];

	buf[0] = p->h.type[0];
	buf[1] = p->h.type[1];
	buf[2]	= 0x00;

	printf("isofs:%s[%d] exflag=0x%x",
				buf,
				isonum_711(p->h.length),
				p->flags );
	return 0;
}

/*
 * Unknown ...
 *   Nothing to do....
 */
static int isofs_rrip_unknown( p, ana )
	ISO_RRIP_EXFLAG  *p;
	ISO_RRIP_ANALYZE *ana;
{
	return 0;
}

typedef struct {
	char	 type[2];
	int	 (*func)();
	int	 (*func2)();
	int	 result;
} RRIP_TABLE;

static RRIP_TABLE rrip_table [] = {
             { 'P', 'X', isofs_rrip_attr,   isofs_rrip_defattr,   ISO_SUSP_ATTR    },
	     { 'T', 'F', isofs_rrip_tstamp, isofs_rrip_deftstamp, ISO_SUSP_TSTAMP  },
	     { 'N', 'M', isofs_rrip_altname,0,                    ISO_SUSP_ALTNAME },
	     { 'C', 'L', isofs_rrip_clink,  0,                    ISO_SUSP_CLINK   },
	     { 'P', 'L', isofs_rrip_plink,  0,                    ISO_SUSP_PLINK   },
	     { 'S', 'L', isofs_rrip_slink,  0,                    ISO_SUSP_SLINK   },
	     { 'R', 'E', isofs_rrip_reldir, 0,                    ISO_SUSP_RELDIR  },
	     { 'P', 'N', isofs_rrip_device, 0,                    ISO_SUSP_DEVICE  },
	     { 'R', 'R', isofs_rrip_idflag, 0,                    ISO_SUSP_IDFLAG  },
	     { 'E', 'R', isofs_rrip_exflag, 0,                    ISO_SUSP_EXFLAG  },
	     { 'S', 'P', isofs_rrip_unknown,0,                    ISO_SUSP_UNKNOWN },
	     { 'C', 'E', isofs_rrip_unknown,0,                    ISO_SUSP_UNKNOWN }
};

int isofs_rrip_analyze ( isodir, analyze )
struct iso_directory_record 	*isodir;
ISO_RRIP_ANALYZE		*analyze;
{	
	register RRIP_TABLE	 *ptable;
	register ISO_SUSP_HEADER *phead;
	register ISO_SUSP_HEADER *pend;
	int	found;
	int	i;
	char	*pwhead;
	int	result;

	/*
         * Note: If name length is odd,
	 *       it will be padding 1 byte  after the name
	 */
	pwhead 	=  isodir->name + isonum_711(isodir->name_len);
	if ( !(isonum_711(isodir->name_len) & 0x0001) )
		pwhead ++;
	phead 	= (ISO_SUSP_HEADER *)pwhead;
	pend 	= (ISO_SUSP_HEADER *)( (char *)isodir + isonum_711(isodir->length) );

	result = 0;
	if ( pend == phead ) {
		goto setdefault;
	}
	/*
	 * Note: "pend" should be more than one SUSP header
	 */ 
	while ( pend >= phead + 1) {
		found   = 0;
		for ( ptable=&rrip_table[0];ptable < &rrip_table[sizeof(rrip_table)/sizeof(RRIP_TABLE)]; ptable ++) {
			if ( bcmp( phead->type, ptable->type, 2 ) == 0 ) {
				found = 1;
				ptable->func( phead, analyze );
				result |= ptable->result;
				break;
			}
		}
		if ( found == 0 ) {
			printf("isofs: name '");
			for ( i =0; i < isonum_711(isodir->name_len) ;i++) {
				printf("%c", *(isodir->name + i) );
			}
			printf("'");
			printf(" - type %c%c [%08x/%08x]...not found\n",
				phead->type[0], phead->type[1], phead, pend );
			isofs_hexdump( phead, (int)( (char *)pend - (char *)phead ) );
		 	break;
		}

		/*
		 * move to next SUSP
		 */
		phead  = (ISO_SUSP_HEADER *) ((unsigned)isonum_711(phead->length) + (char *)phead);
	}

setdefault:
	/*
	 * If we don't find the Basic SUSP stuffs, just set default value
         *   ( attribute/time stamp )
	 */
	for ( ptable=&rrip_table[0];ptable < &rrip_table[2]; ptable ++) {
		if ( ptable->func2 != 0 && !(ptable->result & result) ) {
			ptable->func2( isodir, analyze );
		}
	}
	return ( result );
}

/* 
 * Get Alternate Name from 'AL' record 
 * If either no AL record nor 0 lenght, 
 *    it will be return the translated ISO9660 name,
 */
int	isofs_rrip_getname( isodir, outbuf, outlen )
	struct iso_directory_record *isodir;
	char *outbuf;
	int *outlen;
{
	ISO_SUSP_HEADER  *phead, *pend;
	ISO_RRIP_ALTNAME *p;
	char		 *pwhead;
	int		 found;

	/*
         * Note: If name length is odd,
	 *       it will be padding 1 byte  after the name
	 */
	pwhead 	=  isodir->name + isonum_711(isodir->name_len);
	if ( !(isonum_711(isodir->name_len) & 0x0001) )
		pwhead ++;
	phead 	= (ISO_SUSP_HEADER *)pwhead;
	pend 	= (ISO_SUSP_HEADER *)( (char *)isodir + isonum_711(isodir->length) );

	found   = 0;
	if ( pend != phead ) {
		while ( pend >= phead + 1) {
			if ( bcmp( phead->type, "NM", 2 ) == 0 ) {
				found = 1;
				break;
			}
			phead  = (ISO_SUSP_HEADER *) ((unsigned)isonum_711(phead->length) + (char *)phead);
		}
	}
	if ( found == 1 ) {
		p = (ISO_RRIP_ALTNAME *)phead;
		*outlen = isonum_711( p->h.length ) - sizeof( ISO_RRIP_ALTNAME );
		bcopy( (char *)( &p->flags + 1 ), outbuf, *outlen );
	} else {
		isofntrans(isodir->name, isonum_711(isodir->name_len), outbuf, outlen );
		if ( *outlen == 1) {
			switch ( outbuf[0] ) {
			case 0:
				outbuf[0] = '.';
				break;
			case 1:
				outbuf[0] = '.';
				outbuf[1] = '.';
				*outlen = 2;
			}
		}
	}
	return( found );
}

/* 
 * Get Symbolic Name from 'SL' record 
 *
 * Note: isodir should contains SL record!
 */
int	isofs_rrip_getsymname( vp, isodir, outbuf, outlen )
struct vnode			*vp;
struct iso_directory_record 	*isodir;
char				*outbuf;
int				*outlen;
{
	register ISO_RRIP_SLINK_COMPONENT *pcomp;
	register ISO_SUSP_HEADER  *phead, *pend;
	register ISO_RRIP_SLINK_COMPONENT *pcompe;
	ISO_RRIP_SLINK   *p;
	char		 *pwhead;
	int		 found;
	int		 slash;
	int 	  	 wlen;

	/*
         * Note: If name length is odd,
	 *       it will be padding 1 byte  after the name
	 */
	pwhead 	=  isodir->name + isonum_711(isodir->name_len);
	if ( !(isonum_711(isodir->name_len) & 0x0001) )
		pwhead ++;
	phead 	= (ISO_SUSP_HEADER *)pwhead;
	pend 	= (ISO_SUSP_HEADER *)( (char *)isodir + isonum_711(isodir->length) );

	found   = 0;
	if ( pend != phead ) {
		while ( pend >= phead + 1) {
			if ( bcmp( phead->type, "SL", 2 ) == 0 ) {
				found = 1;
				break;
			}
			phead  = (ISO_SUSP_HEADER *) ((unsigned)isonum_711(phead->length) + (char *)phead);
		}
	}
	if ( found == 0 ) {
		*outlen = 0;
		return( found );
	} 

	p	= (ISO_RRIP_SLINK *)phead;
	pcomp	= (ISO_RRIP_SLINK_COMPONENT *)p->component;
	pcompe  = (ISO_RRIP_SLINK_COMPONENT *)((char *)p + isonum_711(p->h.length));
	
	/*
         * Gathering a Symbolic name from each component with path
         */
	*outlen = 0; 
	slash   = 0;
	while ( pcomp < pcompe ) {

		/* Inserting Current */
		if ( pcomp->cflag[0] & ISO_SUSP_CFLAG_CURRENT ) {
			bcopy("./",	outbuf+*outlen, 2);
			*outlen += 2;
			slash   = 0;
		}

		/* Inserting Parent */
		if ( pcomp->cflag[0] & ISO_SUSP_CFLAG_PARENT ) {
			bcopy("../",	outbuf+*outlen, 3);
			*outlen += 3;
			slash   = 0;
		}

		/* Inserting slash for ROOT */
		if ( pcomp->cflag[0] & ISO_SUSP_CFLAG_ROOT ) {
			bcopy("/",	outbuf+*outlen, 1);
			*outlen += 1;
			slash   = 0;
		}

		/* Inserting a mount point i.e. "/cdrom" */
		if ( pcomp->cflag[0] & ISO_SUSP_CFLAG_VOLROOT ) {
                        wlen = strlen(vp->v_mount->mnt_stat.f_mntonname);
			bcopy(vp->v_mount->mnt_stat.f_mntonname,outbuf+*outlen, wlen);
			*outlen += wlen;
			slash   = 1;
		}

		/* Inserting hostname i.e. "tama:" */
		if ( pcomp->cflag[0] & ISO_SUSP_CFLAG_HOST ) {
			bcopy(hostname, outbuf+*outlen, hostnamelen);
			*(outbuf+hostnamelen) = ':';
			*outlen += (hostnamelen + 1);
			slash   = 0;	/* Uuum Should we insert a slash ? */
		}
	
		/* Inserting slash for next component */
		if ( slash == 1 ) {
			outbuf[*outlen] = '/';
			*outlen  += 1;
			slash   =  0;
		}

		/* Inserting component */
		wlen = isonum_711(pcomp->clen);
		if ( wlen != 0 ) {
			bcopy( pcomp->name, outbuf + *outlen, wlen );
			*outlen += wlen;
			slash   = 1;
		}
			
		/*
                 * Move to next component...
		 */	
		pcomp = (ISO_RRIP_SLINK_COMPONENT *)((char *)pcomp
			+ sizeof(ISO_RRIP_SLINK_COMPONENT) - 1 
			+ isonum_711(pcomp->clen));
	}
	return( found );
}
/* Hexdump routine for debug*/
int isofs_hexdump( p, size )
	unsigned char *p;
	int  size;
{	
	int i,j,k;
	unsigned char *wp;

	for ( i = 0; i < size; i += 16 ) {
		printf("isofs: ");
		wp = p;
		k = ( (size - i) > 16 ? 16 : size - i );
		for ( j =0; j < k; j ++ ){
			printf("%02x ", *p );
			p++;
		}
		printf(" : ");
		p = wp;
		for ( j =0; j < k; j ++ ){
			if ( (*p > 0x20) && (*p < 0x7f) ) 
				printf("%c", *p );
			else
				printf(" ");
			p++;
		}
		printf("\n");
	}
	printf("\n");
	return 0;
}
Commit	Line	Data
b4e4339f JH	1	/*
	2	* Copyright (c) 1993 Atsushi Murai (amurai@spec.co.jp)
	3	* All rights reserved.
	4	*
	5	* Redistribution and use in source and binary forms, with or without
	6	* modification, are permitted provided that the following conditions
	7	* are met:
	8	* 1. Redistributions of source code must retain the above copyright
	9	* notice, this list of conditions and the following disclaimer.
	10	* 2. Redistributions in binary form must reproduce the above copyright
	11	* notice, this list of conditions and the following disclaimer in the
	12	* documentation and/or other materials provided with the distribution.
	13	* 3. All advertising materials mentioning features or use of this software
	14	* must display the following acknowledgement:
	15	* 4. Neither the name of the University nor the names of its contributors
	16	* may be used to endorse or promote products derived from this software
	17	* without specific prior written permission.
	18	*
	19	* THIS SOFTWARE IS PROVIDED BY Atsushi Murai(amurai@spec.co.jp)``AS IS'' AND
	20	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	21	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	22	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	23	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	24	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	25	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	26	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	27	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	28	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	29	* SUCH DAMAGE.
	30	*
fde1aeb2	31	* $Id: isofs_rrip.c,v 1.4 1993/11/25 01:32:27 wollman Exp $
b4e4339f JH	32	*/
	33
	34	#include "param.h"
dd18dc33	35	#include "systm.h"
b4e4339f JH	36	#include "namei.h"
	37	#include "buf.h"
	38	#include "file.h"
	39	#include "vnode.h"
	40	#include "mount.h"
	41	#include "kernel.h"
	42
	43	#include "sys/time.h"
	44
	45	#include "iso.h"
	46	#include "isofs_node.h"
	47	#include "isofs_rrip.h"
	48	#include "iso_rrip.h"
	49
	50	/*
	51	* POSIX file attribute
	52	*/
	53	static int isofs_rrip_attr( p, ana )
4c45483e GW	54	ISO_RRIP_ATTR *p;
4c45483e GW	55	ISO_RRIP_ANALYZE *ana;
b4e4339f JH	56	{
	57	ana->inode.iso_mode = isonum_731(p->mode_l);
	58	ana->inode.iso_uid = (uid_t)isonum_731(p->uid_l);
	59	ana->inode.iso_gid = (gid_t)isonum_731(p->gid_l);
	60	/* ana->inode.iso_links = isonum_731(p->links_l); */
4c45483e	61	return 0;
b4e4339f JH	62	}
	63
	64	int isofs_rrip_defattr( isodir, ana )
4c45483e GW	65	struct iso_directory_record *isodir;
4c45483e GW	66	ISO_RRIP_ANALYZE *ana;
b4e4339f JH	67	{
	68	ana->inode.iso_mode = (VREAD\|VEXEC\|(VREAD\|VEXEC)>>3\|(VREAD\|VEXEC)>>6);
	69	ana->inode.iso_uid = (uid_t)0;
	70	ana->inode.iso_gid = (gid_t)0;
4c45483e	71	return 0;
b4e4339f JH	72	}
	73
	74	/*
	75	* POSIX device modes
	76	*/
	77	static int isofs_rrip_device( p, ana )
4c45483e GW	78	ISO_RRIP_DEVICE *p;
4c45483e GW	79	ISO_RRIP_ANALYZE *ana;
b4e4339f	80	{
b4e4339f JH	81	char buf[3];
	82
	83	buf[0] = p->h.type[0];
	84	buf[1] = p->h.type[1];
	85	buf[2] = 0x00;
	86
	87	printf("isofs:%s[%d] high=0x%08x, low=0x%08x\n",
	88	buf,
	89	isonum_711(p->h.length),
	90	isonum_731(p->dev_t_high_l),
	91	isonum_731(p->dev_t_low_l)
	92	);
4c45483e	93	return 0;
b4e4339f JH	94	}
	95
	96	/*
	97	* Symbolic Links
	98	*/
	99	static int isofs_rrip_slink( p, ana )
4c45483e GW	100	ISO_RRIP_SLINK *p;
4c45483e GW	101	ISO_RRIP_ANALYZE *ana;
b4e4339f	102	{
4c45483e	103	return 0;
b4e4339f JH	104	}
	105
	106	/*
	107	* Alternate name
	108	*/
	109	static int isofs_rrip_altname( p, ana )
4c45483e GW	110	ISO_RRIP_ALTNAME *p;
4c45483e GW	111	ISO_RRIP_ANALYZE *ana;
b4e4339f	112	{
4c45483e	113	return 0;
b4e4339f JH	114	}
	115
	116	/*
	117	* Child Link
	118	*/
	119	static int isofs_rrip_clink( p, ana )
4c45483e GW	120	ISO_RRIP_CLINK *p;
4c45483e GW	121	ISO_RRIP_ANALYZE *ana;
b4e4339f	122	{
b4e4339f JH	123	char buf[3];
	124	buf[0] = p->h.type[0];
	125	buf[1] = p->h.type[1];
	126	buf[2] = 0x00;
	127	printf("isofs:%s[%d] loc=%d\n",
	128	buf,
	129	isonum_711(p->h.length),
	130	isonum_733(p->dir_loc)
	131	);
b4e4339f	132	ana->inode.iso_cln = isonum_733(p->dir_loc);
4c45483e	133	return 0;
b4e4339f JH	134	}
	135
	136	/*
	137	* Parent Link
	138	*/
	139	static int isofs_rrip_plink( p, ana )
	140	ISO_RRIP_PLINK *p;
	141	ISO_RRIP_ANALYZE *ana;
	142	{
	143
b4e4339f JH	144	char buf[3];
	145	buf[0] = p->h.type[0];
	146	buf[1] = p->h.type[1];
	147	buf[2] = 0x00;
	148	printf("isofs:%s[%d] loc=%d\n",
	149	buf,
	150	isonum_711(p->h.length),
	151	isonum_733(p->dir_loc)
	152	);
b4e4339f	153	ana->inode.iso_pln = isonum_733(p->dir_loc);
4c45483e	154	return 0;
b4e4339f JH	155	}
	156
	157	/*
	158	* Relocated directory
	159	*/
	160	static int isofs_rrip_reldir( p, ana )
	161	ISO_RRIP_RELDIR *p;
	162	ISO_RRIP_ANALYZE *ana;
	163	{
b4e4339f JH	164	char buf[3];
	165
	166	buf[0] = p->h.type[0];
	167	buf[1] = p->h.type[1];
	168	buf[2] = 0x00;
	169
	170	printf("isofs:%s[%d]\n",buf, isonum_711(p->h.length) );
4c45483e	171	return 0;
b4e4339f JH	172	}
	173
	174	/*
	175	* Time stamp
	176	*/
	177	static void isofs_rrip_tstamp_conv7(pi, pu)
	178	char *pi;
	179	struct timeval *pu;
	180	{
	181	int i;
	182	int crtime,days;
	183	int year,month,day,hour,minute,second,tz;
	184
	185	year = pi[0] - 70;
	186	month = pi[1];
	187	day = pi[2];
	188	hour = pi[3];
	189	minute = pi[4];
	190	second = pi[5];
	191	tz = pi[6];
	192
	193	if (year < 0) {
	194	crtime = 0;
	195	} else {
	196	int monlen[12] = {31,28,31,30,31,30,31,31,30,31,30,31};
	197	days = year * 365;
	198	if (year > 2)
	199	days += (year+2) / 4;
	200	for (i = 1; i < month; i++)
	201	days += monlen[i-1];
	202	if (((year+2) % 4) == 0 && month > 2)
	203	days++;
	204	days += day - 1;
	205	crtime = ((((days * 24) + hour) * 60 + minute) * 60)
	206	+ second;
	207
	208	/* sign extend */
	209	if (tz & 0x80)
	210	tz \|= (-1 << 8);
	211
	212	/* timezone offset is unreliable on some disks */
	213	if (-48 <= tz && tz <= 52)
	214	crtime += tz * 15 * 60;
	215	}
	216	pu->tv_sec = crtime;
	217	pu->tv_usec = 0;
	218	}
	219
	220
	221	static unsigned isofs_chars2ui( begin, end )
	222	unsigned char *begin;
	223	unsigned char *end;
	224	{
	225	unsigned rc=0;
	226	int len;
	227	int wlen;
	228	static int pow[]={ 1, 10, 100, 1000 };
	229
	230	len = end - begin;
	231	wlen= len;
	232	for (; len >= 0; len -- ) {
	233	rc += ( (begin+len) pow[wlen - len] );
	234	}
	235	return( rc );
236	}
237
238	static void isofs_rrip_tstamp_conv17(pi, pu)
239	unsigned char *pi;
240	struct timeval *pu;
241	{
242	unsigned char buf[7];
243
244	/* year:"0001"-"9999" -> -1900 */
245	buf[0] = (unsigned char)(isofs_chars2ui( &pi[0], &pi[3]) - 1900 );
246
247	/* month: " 1"-"12" -> 1 - 12 */
248	buf[1] = (unsigned char)isofs_chars2ui( &pi[4], &pi[5]);
249
250	/* day: " 1"-"31" -> 1 - 31 */
251	buf[2] = isofs_chars2ui( &pi[6], &pi[7]);
252
253	/* hour: " 0"-"23" -> 0 - 23 */
254	buf[3] = isofs_chars2ui( &pi[8], &pi[9]);
255
256	/* minute:" 0"-"59" -> 0 - 59 */
257	buf[4] = isofs_chars2ui( &pi[10], &pi[11] );
258
259	/* second:" 0"-"59" -> 0 - 59 */
260	buf[5] = isofs_chars2ui( &pi[12], &pi[13] );
261
262	/* difference of GMT */
263	buf[6] = pi[16];
264
265	isofs_rrip_tstamp_conv7(buf, pu);
266	}
267
268	static int isofs_rrip_tstamp( p, ana )
269	ISO_RRIP_TSTAMP *p;
270	ISO_RRIP_ANALYZE *ana;
271	{
272	unsigned char *ptime;
273
274	ptime = p->time;
275
276	/* Check a format of time stamp (7bytes/17bytes) */
277	if ( !(*p->flags & ISO_SUSP_TSTAMP_FORM17 ) ) {
278	isofs_rrip_tstamp_conv7(ptime, &ana->inode.iso_ctime );
279
280	if ( *p->flags & ISO_SUSP_TSTAMP_MODIFY )
281	isofs_rrip_tstamp_conv7(ptime+7, &ana->inode.iso_mtime );
282	else
283	ana->inode.iso_mtime = ana->inode.iso_ctime;
284
285	if ( *p->flags & ISO_SUSP_TSTAMP_ACCESS )
286	isofs_rrip_tstamp_conv7(ptime+14, &ana->inode.iso_atime );
287	else
288	ana->inode.iso_atime = ana->inode.iso_ctime;
289	} else {
290	isofs_rrip_tstamp_conv17(ptime, &ana->inode.iso_ctime );
291
292	if ( *p->flags & ISO_SUSP_TSTAMP_MODIFY )
293	isofs_rrip_tstamp_conv17(ptime+17, &ana->inode.iso_mtime );
294	else
295	ana->inode.iso_mtime = ana->inode.iso_ctime;
296
297	if ( *p->flags & ISO_SUSP_TSTAMP_ACCESS )
298	isofs_rrip_tstamp_conv17(ptime+34, &ana->inode.iso_atime );
299	else
300	ana->inode.iso_atime = ana->inode.iso_ctime;
301	}
4c45483e	302	return 0;
b4e4339f JH	303	}
	304
	305	int isofs_rrip_deftstamp( isodir, ana )
4c45483e GW	306	struct iso_directory_record *isodir;
4c45483e GW	307	ISO_RRIP_ANALYZE *ana;
b4e4339f JH	308	{
	309	isofs_rrip_tstamp_conv7(isodir->date, &ana->inode.iso_ctime );
	310	ana->inode.iso_atime = ana->inode.iso_ctime;
	311	ana->inode.iso_mtime = ana->inode.iso_ctime;
4c45483e	312	return 0;
b4e4339f JH	313	}
	314
	315
	316	/*
	317	* Flag indicating
	318	* Nothing to do....
	319	*/
	320	static int isofs_rrip_idflag( p, ana )
	321	ISO_RRIP_IDFLAG *p;
	322	ISO_RRIP_ANALYZE *ana;
	323	{
b4e4339f JH	324	char buf[3];
	325
	326	buf[0] = p->h.type[0];
	327	buf[1] = p->h.type[1];
	328	buf[2] = 0x00;
	329
	330	printf("isofs:%s[%d] idflag=0x%x\n",
	331	buf,
	332	isonum_711(p->h.length),
	333	p->flags );
4c45483e	334	return 0;
b4e4339f JH	335	}
	336
	337	/*
	338	* Extension reference
	339	* Nothing to do....
	340	*/
	341	static int isofs_rrip_exflag( p, ana )
	342	ISO_RRIP_EXFLAG *p;
	343	ISO_RRIP_ANALYZE *ana;
	344	{
b4e4339f JH	345	char buf[3];
	346
	347	buf[0] = p->h.type[0];
	348	buf[1] = p->h.type[1];
	349	buf[2] = 0x00;
	350
	351	printf("isofs:%s[%d] exflag=0x%x",
	352	buf,
	353	isonum_711(p->h.length),
	354	p->flags );
4c45483e	355	return 0;
b4e4339f JH	356	}
	357
	358	/*
	359	* Unknown ...
	360	* Nothing to do....
	361	*/
	362	static int isofs_rrip_unknown( p, ana )
4c45483e GW	363	ISO_RRIP_EXFLAG *p;
4c45483e GW	364	ISO_RRIP_ANALYZE *ana;
b4e4339f	365	{
4c45483e	366	return 0;
b4e4339f JH	367	}
	368
	369	typedef struct {
	370	char type[2];
	371	int (*func)();
	372	int (*func2)();
	373	int result;
	374	} RRIP_TABLE;
	375
	376	static RRIP_TABLE rrip_table [] = {
	377	{ 'P', 'X', isofs_rrip_attr, isofs_rrip_defattr, ISO_SUSP_ATTR },
	378	{ 'T', 'F', isofs_rrip_tstamp, isofs_rrip_deftstamp, ISO_SUSP_TSTAMP },
	379	{ 'N', 'M', isofs_rrip_altname,0, ISO_SUSP_ALTNAME },
	380	{ 'C', 'L', isofs_rrip_clink, 0, ISO_SUSP_CLINK },
	381	{ 'P', 'L', isofs_rrip_plink, 0, ISO_SUSP_PLINK },
	382	{ 'S', 'L', isofs_rrip_slink, 0, ISO_SUSP_SLINK },
	383	{ 'R', 'E', isofs_rrip_reldir, 0, ISO_SUSP_RELDIR },
	384	{ 'P', 'N', isofs_rrip_device, 0, ISO_SUSP_DEVICE },
	385	{ 'R', 'R', isofs_rrip_idflag, 0, ISO_SUSP_IDFLAG },
	386	{ 'E', 'R', isofs_rrip_exflag, 0, ISO_SUSP_EXFLAG },
	387	{ 'S', 'P', isofs_rrip_unknown,0, ISO_SUSP_UNKNOWN },
	388	{ 'C', 'E', isofs_rrip_unknown,0, ISO_SUSP_UNKNOWN }
	389	};
	390
	391	int isofs_rrip_analyze ( isodir, analyze )
	392	struct iso_directory_record *isodir;
	393	ISO_RRIP_ANALYZE *analyze;
	394	{
	395	register RRIP_TABLE *ptable;
	396	register ISO_SUSP_HEADER *phead;
	397	register ISO_SUSP_HEADER *pend;
	398	int found;
	399	int i;
	400	char *pwhead;
	401	int result;
	402
	403	/*
	404	* Note: If name length is odd,
	405	* it will be padding 1 byte after the name
	406	*/
	407	pwhead = isodir->name + isonum_711(isodir->name_len);
	408	if ( !(isonum_711(isodir->name_len) & 0x0001) )
	409	pwhead ++;
	410	phead = (ISO_SUSP_HEADER *)pwhead;
	411	pend = (ISO_SUSP_HEADER )( (char )isodir + isonum_711(isodir->length) );
	412
	413	result = 0;
	414	if ( pend == phead ) {
	415	goto setdefault;
	416	}
	417	/*
	418	* Note: "pend" should be more than one SUSP header
	419	*/
	420	while ( pend >= phead + 1) {
	421	found = 0;
	422	for ( ptable=&rrip_table[0];ptable < &rrip_table[sizeof(rrip_table)/sizeof(RRIP_TABLE)]; ptable ++) {
	423	if ( bcmp( phead->type, ptable->type, 2 ) == 0 ) {
	424	found = 1;
	425	ptable->func( phead, analyze );
	426	result \|= ptable->result;
	427	break;
	428	}
	429	}
	430	if ( found == 0 ) {
b4e4339f JH	431	printf("isofs: name '");
	432	for ( i =0; i < isonum_711(isodir->name_len) ;i++) {
	433	printf("%c", *(isodir->name + i) );
	434	}
	435	printf("'");
	436	printf(" - type %c%c [%08x/%08x]...not found\n",
	437	phead->type[0], phead->type[1], phead, pend );
	438	isofs_hexdump( phead, (int)( (char )pend - (char )phead ) );
b4e4339f JH	439	break;
	440	}
	441
	442	/*
	443	* move to next SUSP
	444	*/
	445	phead = (ISO_SUSP_HEADER ) ((unsigned)isonum_711(phead->length) + (char )phead);
	446	}
	447
	448	setdefault:
	449	/*
	450	* If we don't find the Basic SUSP stuffs, just set default value
	451	* ( attribute/time stamp )
	452	*/
	453	for ( ptable=&rrip_table[0];ptable < &rrip_table[2]; ptable ++) {
	454	if ( ptable->func2 != 0 && !(ptable->result & result) ) {
	455	ptable->func2( isodir, analyze );
	456	}
	457	}
	458	return ( result );
	459	}
	460
	461	/*
	462	* Get Alternate Name from 'AL' record
d115dd9c	463	* If either no AL record nor 0 lenght,
b4e4339f JH	464	* it will be return the translated ISO9660 name,
	465	*/
	466	int isofs_rrip_getname( isodir, outbuf, outlen )
fde1aeb2 GW	467	struct iso_directory_record *isodir;
	468	char *outbuf;
	469	int *outlen;
b4e4339f JH	470	{
	471	ISO_SUSP_HEADER phead, pend;
	472	ISO_RRIP_ALTNAME *p;
	473	char *pwhead;
	474	int found;
	475
	476	/*
	477	* Note: If name length is odd,
	478	* it will be padding 1 byte after the name
	479	*/
	480	pwhead = isodir->name + isonum_711(isodir->name_len);
	481	if ( !(isonum_711(isodir->name_len) & 0x0001) )
	482	pwhead ++;
	483	phead = (ISO_SUSP_HEADER *)pwhead;
	484	pend = (ISO_SUSP_HEADER )( (char )isodir + isonum_711(isodir->length) );
	485
	486	found = 0;
	487	if ( pend != phead ) {
	488	while ( pend >= phead + 1) {
	489	if ( bcmp( phead->type, "NM", 2 ) == 0 ) {
	490	found = 1;
	491	break;
	492	}
	493	phead = (ISO_SUSP_HEADER ) ((unsigned)isonum_711(phead->length) + (char )phead);
	494	}
	495	}
	496	if ( found == 1 ) {
	497	p = (ISO_RRIP_ALTNAME *)phead;
	498	*outlen = isonum_711( p->h.length ) - sizeof( ISO_RRIP_ALTNAME );
	499	bcopy( (char )( &p->flags + 1 ), outbuf, outlen );
	500	} else {
	501	isofntrans(isodir->name, isonum_711(isodir->name_len), outbuf, outlen );
	502	if ( *outlen == 1) {
	503	switch ( outbuf[0] ) {
	504	case 0:
	505	outbuf[0] = '.';
	506	break;
	507	case 1:
	508	outbuf[0] = '.';
	509	outbuf[1] = '.';
	510	*outlen = 2;
	511	}
	512	}
	513	}
	514	return( found );
	515	}
	516
	517	/*
	518	* Get Symbolic Name from 'SL' record
	519	*
	520	* Note: isodir should contains SL record!
	521	*/
	522	int isofs_rrip_getsymname( vp, isodir, outbuf, outlen )
	523	struct vnode *vp;
	524	struct iso_directory_record *isodir;
	525	char *outbuf;
	526	int *outlen;
	527	{
	528	register ISO_RRIP_SLINK_COMPONENT *pcomp;
	529	register ISO_SUSP_HEADER phead, pend;
	530	register ISO_RRIP_SLINK_COMPONENT *pcompe;
	531	ISO_RRIP_SLINK *p;
	532	char *pwhead;
	533	int found;
534	int slash;
535	int wlen;
536
537	/*
538	* Note: If name length is odd,
539	* it will be padding 1 byte after the name
540	*/
541	pwhead = isodir->name + isonum_711(isodir->name_len);
542	if ( !(isonum_711(isodir->name_len) & 0x0001) )
543	pwhead ++;
544	phead = (ISO_SUSP_HEADER *)pwhead;
545	pend = (ISO_SUSP_HEADER )( (char )isodir + isonum_711(isodir->length) );
546
547	found = 0;
548	if ( pend != phead ) {
549	while ( pend >= phead + 1) {
550	if ( bcmp( phead->type, "SL", 2 ) == 0 ) {
551	found = 1;
552	break;
553	}
554	phead = (ISO_SUSP_HEADER ) ((unsigned)isonum_711(phead->length) + (char )phead);
555	}
556	}
557	if ( found == 0 ) {
558	*outlen = 0;
559	return( found );
560	}
561
562	p = (ISO_RRIP_SLINK *)phead;
563	pcomp = (ISO_RRIP_SLINK_COMPONENT *)p->component;
564	pcompe = (ISO_RRIP_SLINK_COMPONENT )((char )p + isonum_711(p->h.length));
565
566	/*
567	* Gathering a Symbolic name from each component with path
568	*/
569	*outlen = 0;
570	slash = 0;
571	while ( pcomp < pcompe ) {
572
573	/* Inserting Current */
574	if ( pcomp->cflag[0] & ISO_SUSP_CFLAG_CURRENT ) {
575	bcopy("./", outbuf+*outlen, 2);
576	*outlen += 2;
577	slash = 0;
578	}
579
580	/* Inserting Parent */
581	if ( pcomp->cflag[0] & ISO_SUSP_CFLAG_PARENT ) {
582	bcopy("../", outbuf+*outlen, 3);
583	*outlen += 3;
584	slash = 0;
585	}
586
587	/* Inserting slash for ROOT */
588	if ( pcomp->cflag[0] & ISO_SUSP_CFLAG_ROOT ) {
589	bcopy("/", outbuf+*outlen, 1);
590	*outlen += 1;
591	slash = 0;
592	}
593
594	/* Inserting a mount point i.e. "/cdrom" */
595	if ( pcomp->cflag[0] & ISO_SUSP_CFLAG_VOLROOT ) {
596	wlen = strlen(vp->v_mount->mnt_stat.f_mntonname);
597	bcopy(vp->v_mount->mnt_stat.f_mntonname,outbuf+*outlen, wlen);
598	*outlen += wlen;
599	slash = 1;
600	}
601
602	/* Inserting hostname i.e. "tama:" */
603	if ( pcomp->cflag[0] & ISO_SUSP_CFLAG_HOST ) {
604	bcopy(hostname, outbuf+*outlen, hostnamelen);
605	*(outbuf+hostnamelen) = ':';
606	*outlen += (hostnamelen + 1);
607	slash = 0; /* Uuum Should we insert a slash ? */
608	}
609
610	/* Inserting slash for next component */
611	if ( slash == 1 ) {
612	outbuf[*outlen] = '/';
613	*outlen += 1;
614	slash = 0;
615	}
616
617	/* Inserting component */
618	wlen = isonum_711(pcomp->clen);
619	if ( wlen != 0 ) {
620	bcopy( pcomp->name, outbuf + *outlen, wlen );
621	*outlen += wlen;
622	slash = 1;
623	}
624
625	/*
626	* Move to next component...
627	*/
628	pcomp = (ISO_RRIP_SLINK_COMPONENT )((char )pcomp
629	+ sizeof(ISO_RRIP_SLINK_COMPONENT) - 1
630	+ isonum_711(pcomp->clen));
631	}
632	return( found );
633	}
b4e4339f JH	634	/* Hexdump routine for debug*/
	635	int isofs_hexdump( p, size )
	636	unsigned char *p;
	637	int size;
	638	{
	639	int i,j,k;
	640	unsigned char *wp;
	641
	642	for ( i = 0; i < size; i += 16 ) {
	643	printf("isofs: ");
	644	wp = p;
	645	k = ( (size - i) > 16 ? 16 : size - i );
	646	for ( j =0; j < k; j ++ ){
	647	printf("%02x ", *p );
	648	p++;
	649	}
	650	printf(" : ");
	651	p = wp;
	652	for ( j =0; j < k; j ++ ){
	653	if ( (p > 0x20) && (p < 0x7f) )
	654	printf("%c", *p );
	655	else
	656	printf(" ");
	657	p++;
	658	}
	659	printf("\n");
	660	}
	661	printf("\n");
4c45483e	662	return 0;
b4e4339f	663	}