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author	nagai <nagai@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>	2008-12-03 20:10:28 +0000
committer	nagai <nagai@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>	2008-12-03 20:10:28 +0000
commit	35b0002cc368179cdd695205102770cb3f133ba6 (patch)
tree	7af6f3af6075eb9c70f730d9df6043183425bff6 /bootstraptest/test_objectspace.rb
parent	d67a350d436b8c8c1ecb169ce3f02706fcdb018d (diff)
download	ruby-35b0002cc368179cdd695205102770cb3f133ba6.tar.gz ruby-35b0002cc368179cdd695205102770cb3f133ba6.tar.xz ruby-35b0002cc368179cdd695205102770cb3f133ba6.zip

* ext/tk/lib/tk.rb: bug fix. use ::RubyVM instead of ::VM [ruby-list:45676]

* ext/tk/tcltklib.c: update RELEASE_DATE git-svn-id: http://svn.ruby-lang.org/repos/ruby/trunk@20475 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

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/* Copyright 2001 Red Hat, Inc.                                    */
/* Michael Fulbright msf@redhat.com                                */

/*   4/2005	Dustin Kirkland	(dustin.kirkland@gmail.com)        */
/* 	Added support for checkpoint fragment sums;                */
/*	Exits media check as soon as bad fragment md5sum'ed        */

#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <fcntl.h>
#include <string.h>

#include "md5.h"
#include "libcheckisomd5.h"

#define APPDATA_OFFSET 883
#define SIZE_OFFSET 84

/* Length in characters of string used for fragment md5sum checking */
#define FRAGMENT_SUM_LENGTH 60

#define MAX(x, y)  ((x > y) ? x : y)
#define MIN(x, y)  ((x < y) ? x : y)

/* finds primary volume descriptor and returns info from it */
/* mediasum must be a preallocated buffer at least 33 bytes long */
/* fragmentsums must be a preallocated buffer at least FRAGMENT_SUM_LENGTH+1 bytes long */
static int parsepvd(int isofd, char *mediasum, int *skipsectors, long long *isosize, int *supported, char *fragmentsums, long long *fragmentcount) {
    unsigned char buf[2048];
    char buf2[512];
    char tmpbuf[512];
    int skipfnd, md5fnd, supportedfnd, fragsumfnd, fragcntfnd;
    unsigned int loc;
    long long offset;
    char *p;

    if (lseek(isofd, (off_t)(16L * 2048L), SEEK_SET) == -1)
	return ((long long)-1);

    offset = (16L * 2048L);
    for (;1;) {
	if (read(isofd, buf, 2048) <= 0)
	    return ((long long)-1);

	if (buf[0] == 1)
	    /* found primary volume descriptor */
	    break;
	else if (buf[0] == 255)
	    /* hit end and didn't find primary volume descriptor */
	    return ((long long)-1);
	offset += 2048L;
    }

    /* read out md5sum */
    memcpy(buf2, buf + APPDATA_OFFSET, 512);
    buf2[511] = '\0';

    *supported = 0;

    md5fnd = 0;
    skipfnd = 0;
    fragsumfnd = 0;
    fragcntfnd = 0;
    supportedfnd = 0;
    loc = 0;
    while (loc < 512) {
	if (!strncmp(buf2 + loc, "ISO MD5SUM = ", 13)) {

	    /* make sure we dont walk off end */
	    if ((loc + 32 + 13) > 511)
		return -1;

	    memcpy(mediasum, buf2 + loc + 13, 32);
	    mediasum[32] = '\0';
	    md5fnd = 1;
	    loc += 45;
	    for (p=buf2+loc; *p != ';' && loc < 512; p++, loc++);
	} else if (!strncmp(buf2 + loc, "SKIPSECTORS = ", 14)) {
	    char *errptr;

	    /* make sure we dont walk off end */
	    if ((loc + 14) > 511)
		return -1;

	    loc = loc + 14;
	    for (p=tmpbuf; buf2[loc] != ';' && loc < 512; p++, loc++)
		*p = buf2[loc];

	    *p = '\0';

	    *skipsectors = strtol(tmpbuf, &errptr, 10);
	    if (errptr && *errptr) {
 	        return -1;
	    } else {
 	        skipfnd = 1;
	    }

	    for (p=buf2+loc; *p != ';' && loc < 512; p++, loc++);
	} else if (!strncmp(buf2 + loc, "RHLISOSTATUS=1", 14)) {
	    *supported = 1;
	    supportedfnd = 1;
	    for (p=buf2+loc; *p != ';' && loc < 512; p++, loc++);
	} else if (!strncmp(buf2 + loc, "RHLISOSTATUS=0", 14)) {
	    *supported = 0;
	    supportedfnd = 1;
	    for (p=buf2+loc; *p != ';' && loc < 512; p++, loc++);
	} else if (!strncmp(buf2 + loc, "FRAGMENT SUMS = ", 16)) {
            /* make sure we dont walk off end */
            if ((loc + FRAGMENT_SUM_LENGTH) > 511)
                return -1;

            memcpy(fragmentsums, buf2 + loc + 16, FRAGMENT_SUM_LENGTH);
            fragmentsums[FRAGMENT_SUM_LENGTH] = '\0';
            fragsumfnd = 1;
            loc += FRAGMENT_SUM_LENGTH + 16;
            for (p=buf2+loc; *p != ';' && loc < 512; p++, loc++);
        } else if (!strncmp(buf2 + loc, "FRAGMENT COUNT = ", 17)) {
            char *errptr;
            /* make sure we dont walk off end */
            if ((loc + 17) > 511)
                return -1;

            loc = loc + 17;
            for (p=tmpbuf; buf2[loc] != ';' && loc < 512; p++, loc++)
                *p = buf2[loc];

            *p = '\0';

            *fragmentcount = strtol(tmpbuf, &errptr, 10);
            if (errptr && *errptr) {
                return -1;
            } else {
                fragcntfnd = 1;
            }

            for (p=buf2+loc; *p != ';' && loc < 512; p++, loc++);
        } else {
	    loc++;
	}

	if ((skipfnd & md5fnd & fragsumfnd & fragcntfnd) & supportedfnd)
 	    break;
    }

    if (!(skipfnd & md5fnd))
	return -1;

    /* get isosize */
    *isosize = (buf[SIZE_OFFSET]*0x1000000+buf[SIZE_OFFSET+1]*0x10000 +
		buf[SIZE_OFFSET+2]*0x100 + buf[SIZE_OFFSET+3]) * 2048LL;

    return offset;
}

/* returns -1 if no checksum encoded in media, 0 if no match, 1 if match */
/* mediasum is the sum encoded in media, computedsum is one we compute   */
/* both strings must be pre-allocated at least 33 chars in length        */
static int checkmd5sum(int isofd, char *mediasum, char *computedsum, int flags) {


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