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resync...no idea what's in here, it's been sitting on the shelf for a while

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This commit is contained in:
brianb
2003-04-29 17:55:09 +00:00
parent f02d552891
commit aa19a0892f
17 changed files with 509 additions and 189 deletions
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85
src/libmdb/file.c
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@@ -74,8 +74,6 @@ int ret;
MdbHandle *_mdb_open(char *filename, gboolean writable)
{
MdbHandle *mdb;
int key[] = {0x86, 0xfb, 0xec, 0x37, 0x5d, 0x44, 0x9c, 0xfa, 0xc6, 0x5e, 0x28, 0xe6, 0x13, 0xb6};
int j,pos;
int bufsize;
MdbFile *f;
@@ -113,28 +111,13 @@ MdbFile *f;
fprintf(stderr,"Couldn't read first page.\n");
return NULL;
}
f->jet_version = mdb_get_int32(mdb, 0x14);
f->jet_version = mdb_pg_get_int32(mdb, 0x14);
if (IS_JET4(mdb)) {
mdb->fmt = &MdbJet4Constants;
} else {
mdb->fmt = &MdbJet3Constants;
}
/* get the db encryption key and xor it back to clear text */
f->db_key = mdb_get_int32(mdb, 0x3e);
f->db_key ^= 0xe15e01b9;
/* get the db password located at 0x42 bytes into the file */
for (pos=0;pos<14;pos++) {
j = mdb_get_int32(mdb,0x42+pos);
j ^= key[pos];
if ( j != 0)
f->db_passwd[pos] = j;
else
f->db_passwd[pos] = '\0';
}
return mdb;
}
MdbHandle *mdb_open(char *filename)
@@ -231,7 +214,12 @@ char tmpbuf[MDB_PGSIZE];
memcpy(mdb->pg_buf,mdb->alt_pg_buf, MDB_PGSIZE);
memcpy(mdb->alt_pg_buf,tmpbuf,MDB_PGSIZE);
}
unsigned char mdb_get_byte(MdbHandle *mdb, int offset)
/* really stupid, just here for consistancy */
unsigned char mdb_get_byte(unsigned char *buf, int offset)
{
return buf[offset];
}
unsigned char mdb_pg_get_byte(MdbHandle *mdb, int offset)
{
unsigned char c;
@@ -240,25 +228,25 @@ unsigned char c;
return c;
}
int
_mdb_get_int16(unsigned char *buf, int offset)
mdb_get_int16(unsigned char *buf, int offset)
{
return buf[offset+1]*256+buf[offset];
}
int
mdb_get_int16(MdbHandle *mdb, int offset)
mdb_pg_get_int16(MdbHandle *mdb, int offset)
{
int i;
if (offset < 0 || offset+2 > mdb->fmt->pg_size) return -1;
i = _mdb_get_int16(mdb->pg_buf, offset);
i = mdb_get_int16(mdb->pg_buf, offset);
mdb->cur_pos+=2;
return i;
}
gint32
mdb_get_int24_msb(MdbHandle *mdb, int offset)
mdb_pg_get_int24_msb(MdbHandle *mdb, int offset)
{
gint32 l;
unsigned char *c;
@@ -272,21 +260,31 @@ unsigned char *c;
mdb->cur_pos+=3;
return l;
}
gint32 mdb_get_int24(MdbHandle *mdb, int offset)
gint32
mdb_get_int24(unsigned char *buf, int offset)
{
gint32 l;
gint32 l = 0;
unsigned char *c;
if (offset <0 || offset+3 > mdb->fmt->pg_size) return -1;
c = &mdb->pg_buf[offset];
c = &buf[offset];
l =c[2]; l<<=8;
l+=c[1]; l<<=8;
l+=c[0];
return l;
}
gint32 mdb_pg_get_int24(MdbHandle *mdb, int offset)
{
guint32 l;
if (offset <0 || offset+4 > mdb->fmt->pg_size) return -1;
l = mdb_get_int24(mdb->pg_buf, offset);
mdb->cur_pos+=3;
return l;
}
long _mdb_get_int32(unsigned char *buf, int offset)
long mdb_get_int32(unsigned char *buf, int offset)
{
long l;
unsigned char *c;
@@ -299,18 +297,18 @@ unsigned char *c;
return l;
}
long mdb_get_int32(MdbHandle *mdb, int offset)
long mdb_pg_get_int32(MdbHandle *mdb, int offset)
{
long l;
if (offset <0 || offset+4 > mdb->fmt->pg_size) return -1;
l = _mdb_get_int32(mdb->pg_buf, offset);
l = mdb_get_int32(mdb->pg_buf, offset);
mdb->cur_pos+=4;
return l;
}
float
mdb_get_single(MdbHandle *mdb, int offset)
mdb_get_single(unsigned char *buf, int offset)
{
#ifdef WORDS_BIGENDIAN
float f2;
@@ -319,9 +317,8 @@ mdb_get_single(MdbHandle *mdb, int offset)
#endif
float f;
if (offset <0 || offset+4 > mdb->fmt->pg_size) return -1;
memcpy(&f, &mdb->pg_buf[offset], 4);
memcpy(&f, &buf[offset], 4);
#ifdef WORDS_BIGENDIAN
f2 = f;
@@ -330,12 +327,19 @@ mdb_get_single(MdbHandle *mdb, int offset)
*(((unsigned char *)&f2)+sizeof(f)-1-i);
}
#endif
mdb->cur_pos+=4;
return f;
}
float
mdb_pg_get_single(MdbHandle *mdb, int offset)
{
if (offset <0 || offset+4 > mdb->fmt->pg_size) return -1;
mdb->cur_pos+=4;
return mdb_get_single(mdb->pg_buf, offset);
}
double
mdb_get_double(MdbHandle *mdb, int offset)
mdb_get_double(unsigned char *buf, int offset)
{
#ifdef WORDS_BIGENDIAN
double d2;
@@ -344,9 +348,8 @@ mdb_get_double(MdbHandle *mdb, int offset)
#endif
double d;
if (offset <0 || offset+4 > mdb->fmt->pg_size) return -1;
memcpy(&d, &mdb->pg_buf[offset], 8);
memcpy(&d, &buf, 8);
#ifdef WORDS_BIGENDIAN
d2 = d;
@@ -355,10 +358,16 @@ mdb_get_double(MdbHandle *mdb, int offset)
*(((unsigned char *)&d2)+sizeof(d)-1-i);
}
#endif
mdb->cur_pos+=8;
return d;
}
double
mdb_pg_get_double(MdbHandle *mdb, int offset)
{
if (offset <0 || offset+4 > mdb->fmt->pg_size) return -1;
mdb->cur_pos+=8;
return mdb_get_double(mdb->pg_buf, offset);
}
int
mdb_set_pos(MdbHandle *mdb, int pos)
{