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Basic checks on file to ensure it's an mdb database. bug # 587739

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This commit is contained in:
brianb
2004-01-10 21:46:14 +00:00
parent dd534f39dc
commit 8c68edba1f
7 changed files with 28 additions and 9 deletions
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11
src/libmdb/file.c
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@@ -106,18 +106,25 @@ MdbFile *f;
fprintf(stderr,"Couldn't open file %s\n",f->filename);
return NULL;
}
f->refs++;
if (!mdb_read_pg(mdb, 0)) {
fprintf(stderr,"Couldn't read first page.\n");
return NULL;
}
if (mdb->pg_buf[0] != 0) {
close(f->fd);
return NULL;
}
f->jet_version = mdb_pg_get_int32(mdb, 0x14);
if (IS_JET4(mdb)) {
mdb->fmt = &MdbJet4Constants;
} else {
} else if (IS_JET3(mdb)) {
mdb->fmt = &MdbJet3Constants;
} else {
fprintf(stderr,"Unknown Jet version.\n");
return NULL;
}
f->refs++;
return mdb;
}
MdbHandle *mdb_open(char *filename)