/******************
* protected methods
*/
protected static OffsetTable ReadOffsetTable(OTFile file, uint filepos)
{
// read the Offset Table from the file
const int SIZEOF_OFFSETTABLE = 12;
OffsetTable ot = null;
// read the offset table
MBOBuffer buf = file.ReadPaddedBuffer(filepos, SIZEOF_OFFSETTABLE);
if (buf != null)
{
if (OTFile.IsValidSfntVersion(buf.GetUint(0)))
{
ot = new OffsetTable(buf);
}
}
// now read the directory entries
if (ot != null)
{
const int SIZEOF_DIRECTORYENTRY = 16;
for (int i = 0; i < ot.numTables; i++)
{
uint dirFilePos = (uint)(filepos + SIZEOF_OFFSETTABLE + i * SIZEOF_DIRECTORYENTRY);
MBOBuffer DirEntBuf = file.ReadPaddedBuffer(dirFilePos, SIZEOF_DIRECTORYENTRY);
if (DirEntBuf != null)
{
DirectoryEntry de = new DirectoryEntry(DirEntBuf);
ot.DirectoryEntries.Add(de);
}
else
{
Debug.Assert(false);
break;
}
}
}
return(ot);
}
/******************
* protected methods
*/
protected static OffsetTable ReadOffsetTable(OTFile file, uint filepos)
{
// read the Offset Table from the file
const int SIZEOF_OFFSETTABLE = 12;
OffsetTable ot = null;
// read the offset table
MBOBuffer buf = file.ReadPaddedBuffer(filepos, SIZEOF_OFFSETTABLE);
if (buf != null)
{
if (OTFile.IsValidSfntVersion(buf.GetUint(0)))
{
ot = new OffsetTable(buf);
}
}
// now read the directory entries
if (ot != null)
{
const int SIZEOF_DIRECTORYENTRY = 16;
for (int i=0; i<ot.numTables; i++)
{
uint dirFilePos = (uint)(filepos+SIZEOF_OFFSETTABLE+i*SIZEOF_DIRECTORYENTRY);
MBOBuffer DirEntBuf = file.ReadPaddedBuffer(dirFilePos, SIZEOF_DIRECTORYENTRY);
if (DirEntBuf != null)
{
DirectoryEntry de = new DirectoryEntry(DirEntBuf);
ot.DirectoryEntries.Add(de);
}
else
{
Debug.Assert(false);
break;
}
}
}
return ot;
}
static int Main( string[] args )
{
if (args.Length == 0) {
Console.WriteLine("DSIGInfo [-v] [-v] [-v] fontfile");
return 0;
}
OTFile f = new OTFile();
Table_DSIG tDSIG = null;
string filename = null;
verbose = 0;
for ( int i = 0; i < args.Length; i++ ) {
if ( "-v" == args[i] )
verbose++;
else
filename = args[i];
}
if ( !f.open(filename) )
{
Console.WriteLine("Error: Cannot open {0} as font file", filename);
return 0;
}
TTCHeader ttc = null;
if ( f.IsCollection() )
{
ttc = f.GetTTCHeader();
if ( f.GetTableManager().GetUnaliasedTableName(ttc.DsigTag) == "DSIG" )
{
MBOBuffer buf = f.ReadPaddedBuffer(ttc.DsigOffset, ttc.DsigLength);
tDSIG = (Table_DSIG) f.GetTableManager().CreateTableObject(ttc.DsigTag, buf);
}
for (uint i = 0; i < f.GetNumFonts() ; i++)
{
OTFont fn = f.GetFont(i);
Table_DSIG memDSIG = (Table_DSIG) fn.GetTable("DSIG");
if (memDSIG != null)
{
Console.WriteLine("Warning: DSIG in member font");
break;
}
}
}
else
{
OTFont fn = f.GetFont(0);
tDSIG = (Table_DSIG) fn.GetTable("DSIG");
}
Console.WriteLine("{0} DSIG table: {1}", filename,
( tDSIG == null ) ? "Absent" : "Present" );
if (tDSIG == null)
return 0;
if ( f.IsCollection() && ttc.version != 0x00020000 )
Console.WriteLine("Warning: TTC has DSIG but header version is 0x{0}, != 0x00020000", ttc.version.ToString("X8"));
if ( tDSIG.usNumSigs != 1 )
Console.WriteLine("NumSigs = {0}", tDSIG.usNumSigs);
for ( uint v = 0; v < tDSIG.usNumSigs ; v++ )
{
Table_DSIG.SignatureBlock sgb;
try {
sgb = tDSIG.GetSignatureBlock(v);
} catch (IndexOutOfRangeException)
{
Console.WriteLine("Error: Out of Range SignatureBlock {0}", v);
break;
}
SignedCms cms = new SignedCms();
cms.Decode(sgb.bSignature);
if ( cms.SignerInfos.Count > 1 )
Console.WriteLine( "#SignerInfos: {0}", cms.SignerInfos.Count );
foreach ( var si in cms.SignerInfos )
{
Console.WriteLine(si.Certificate);
if ( Type.GetType("Mono.Runtime") == null )
foreach ( var ua in si.UnsignedAttributes )
{
foreach ( var asnd in ua.Values )
{
try
{
ASN1 vv = new ASN1(asnd.RawData);
ASN1 t = new ASN1(vv[3][1][1].Value);
Console.WriteLine("Decoded Signing Time: {0}", ASN1Convert.ToDateTime (t) );
}
catch (Exception e)
{/* Nothing to do */ }
}
}
}
Console.WriteLine( "#Certificates: {0}", cms.Certificates.Count );
#if HAVE_MONO_X509
certs = new Mono.Security.X509.X509CertificateCollection ();
//Mono.Security.X509.X509Chain signerChain = new Mono.Security.X509.X509Chain ();
#endif
foreach ( var x509 in cms.Certificates )
{
#if HAVE_MONO_X509
certs.Add(new Mono.Security.X509.X509Certificate(x509.RawData));
#endif
if ( verbose > 0 )
{
Console.WriteLine(x509);
}
else
{
Console.WriteLine(x509.Subject);
}
};
#if HAVE_MONO_X509
Mono.Security.X509.X509Certificate x = new Mono.Security.X509.X509Certificate(cms.SignerInfos[0].Certificate.RawData);
Mono.Security.X509.X509Certificate parent = x;
while (x != null) { // Self-signed is fine - the font bundled CA is self-signed.
parent = x; // last valid
x = FindCertificateParent (x);
if (x != null && x.Equals(parent))
break;
}
#endif
ASN1 spc = new ASN1(cms.ContentInfo.Content);
ASN1 playload_oid = null;
ASN1 oid = null;
ASN1 digest = null;
ASN1 obsolete = null;
if ( Type.GetType("Mono.Runtime") == null )
{
// DotNet is much saner!
playload_oid = spc[0][0];
obsolete = spc[0][1][0];
oid = spc[1][0][0];
digest = spc[1][1];
}
else
{
playload_oid = spc[0];
obsolete = spc[1][0];
oid = spc[2][0][0];
digest = spc[2][1];
}
string algo = ASN1Convert.ToOid (oid);
string algoname = (new Oid(algo)).FriendlyName;
Console.WriteLine("Digest Algorithm: {0}", algoname);
byte[] Value = digest.Value;
StringBuilder hexLine_sig = new StringBuilder ();
for (int i = 0; i < Value.Length; i++) {
hexLine_sig.AppendFormat ("{0} ", Value [i].ToString ("X2"));
}
hexLine_sig.AppendFormat (Environment.NewLine);
switch ( algoname )
{
case "md5":
hash = HashAlgorithm.Create ("MD5");
break;
case "sha1":
hash = HashAlgorithm.Create ("SHA1");
break;
default:
throw new NotImplementedException("Unknown HashAlgorithm: " + algoname );
}
byte[] cdigest;
if ( f.IsCollection() )
{
cdigest = get_TTC_digest( f );
}
else
{
cdigest = get_TTF_digest( f );
}
StringBuilder hexLine = new StringBuilder ();
for (int i = 0; i < cdigest.Length; i++) {
hexLine.AppendFormat ("{0} ", cdigest [i].ToString ("X2"));
}
hexLine.AppendFormat (Environment.NewLine);
Console.WriteLine("{0} Signed Digest:\t{1}", algoname.ToUpper(), hexLine_sig);
Console.WriteLine("Calculated Digest:\t{0}", hexLine);
string root_thumb = "";
#if HAVE_MONO_X509
root_thumb =
(new System.Security.Cryptography.X509Certificates.X509Certificate2(parent.RawData)).Thumbprint;
Console.WriteLine("ChainEnd Name: {0}", parent.SubjectName);
Console.WriteLine("ChainEnd Self-Signed: {0}", parent.IsSelfSigned);
#endif
Console.WriteLine("ChainEnd: {0}", root_thumb);
bool trusted = false;
try
{
string root_id = trusted_roots[root_thumb];
Console.WriteLine("RootID: {0}", root_id);
trusted = true;
}
catch (KeyNotFoundException)
{}
Console.WriteLine("Trusted: {0}", trusted);
}
return 0;
}
public DSIGInfo( string filename )
{
fontfile = new OTFile();
tDSIG = null;
Warn_TTCv1 = false;
Warn_DSIG_in_memFonts = false;
Warn_MalformedSIG = false;
usNumSigs = 0;
if ( !fontfile.open(filename) )
{
throw new IOException("Cannot open file " + filename );
}
TTCHeader ttc = null;
if ( fontfile.IsCollection() )
{
ttc = fontfile.GetTTCHeader();
if ( fontfile.GetTableManager().GetUnaliasedTableName(ttc.DsigTag) == "DSIG" )
{
MBOBuffer buf = fontfile.ReadPaddedBuffer(ttc.DsigOffset, ttc.DsigLength);
tDSIG = (Table_DSIG) fontfile.GetTableManager().CreateTableObject(ttc.DsigTag, buf);
}
for (uint i = 0; i < fontfile.GetNumFonts() ; i++)
{
OTFont fn = fontfile.GetFont(i);
Table_DSIG memDSIG = (Table_DSIG) fn.GetTable("DSIG");
if (memDSIG != null)
{
Warn_DSIG_in_memFonts = true;
break;
}
}
}
else
{
OTFont fn = fontfile.GetFont(0);
tDSIG = (Table_DSIG) fn.GetTable("DSIG");
}
HaveDSIG = ( ( tDSIG == null ) ? false : true );
// Officially we should only warn if HaveDSIG true
if ( fontfile.IsCollection() && ttc.version != 0x00020000 )
Warn_TTCv1 = true;
if ( HaveDSIG )
FurtherWork();
}
/************************
* public static methods
*/
public static TTCHeader ReadTTCHeader(OTFile file)
{
TTCHeader ttc = null;
const int SIZEOF_FIRSTTHREEFIELDS = 12;
const int SIZEOF_UINT = 4;
// read the first three fields of the TTC Header
// starting at the beginning of the file
MBOBuffer buf = file.ReadPaddedBuffer(0, SIZEOF_FIRSTTHREEFIELDS);
OTTag tag = null;
uint version = 0;
uint DirectoryCount = 0;
if (buf != null)
{
tag = new OTTag(buf.GetBuffer());
version = buf.GetUint(4);
DirectoryCount = buf.GetUint(8);
}
// if the tag and the version and the dir count seem correct then
// allocate a TTCHeader object and try to read the rest of the header
if ((string)tag == "ttcf" &&
(version == 0x00010000 || version == 0x00020000) &&
12 + DirectoryCount * SIZEOF_UINT < file.GetFileLength())
{
ttc = new TTCHeader();
ttc.TTCTag = tag;
ttc.version = version;
ttc.DirectoryCount = DirectoryCount;
// Directory offsets
buf = file.ReadPaddedBuffer(SIZEOF_FIRSTTHREEFIELDS, DirectoryCount*SIZEOF_UINT);
if (buf != null)
{
for (uint i=0; i<ttc.DirectoryCount; i++)
{
uint offset = buf.GetUint(i*SIZEOF_UINT);
ttc.DirectoryOffsets.Add(offset);
}
}
// only read Dsig fields if version 2.0 and last buffer was successfully read
if ((version == 0x00010000 || version == 0x00020000) && buf != null)
{
uint filepos = SIZEOF_FIRSTTHREEFIELDS + DirectoryCount*SIZEOF_UINT;
buf = file.ReadPaddedBuffer(filepos, 3*SIZEOF_UINT);
if (buf != null)
{
// DsigTag
ttc.DsigTag = new OTTag(buf.GetBuffer());
if ( ( version == 0x00010000 ) && ( (string) ttc.DsigTag != "DSIG" ) )
{
// failed v1 trial - reset & bail
ttc.DsigTag = null;
return ttc;
}
// DsigLength
ttc.DsigLength = buf.GetUint(4);
// DsigOffset
ttc.DsigOffset = buf.GetUint(8);
}
}
}
return ttc;
}
/************************
* public static methods
*/
public static TTCHeader ReadTTCHeader(OTFile file)
{
TTCHeader ttc = null;
const int SIZEOF_FIRSTTHREEFIELDS = 12;
const int SIZEOF_UINT = 4;
// read the first three fields of the TTC Header
// starting at the beginning of the file
MBOBuffer buf = file.ReadPaddedBuffer(0, SIZEOF_FIRSTTHREEFIELDS);
OTTag tag = null;
uint version = 0;
uint DirectoryCount = 0;
if (buf != null)
{
tag = new OTTag(buf.GetBuffer());
version = buf.GetUint(4);
DirectoryCount = buf.GetUint(8);
}
// if the tag and the version and the dir count seem correct then
// allocate a TTCHeader object and try to read the rest of the header
if ((string)tag == "ttcf" &&
(version == 0x00010000 || version == 0x00020000) &&
12 + DirectoryCount * SIZEOF_UINT < file.GetFileLength())
{
ttc = new TTCHeader();
ttc.TTCTag = tag;
ttc.version = version;
ttc.DirectoryCount = DirectoryCount;
// Directory offsets
buf = file.ReadPaddedBuffer(SIZEOF_FIRSTTHREEFIELDS, DirectoryCount * SIZEOF_UINT);
if (buf != null)
{
for (uint i = 0; i < ttc.DirectoryCount; i++)
{
uint offset = buf.GetUint(i * SIZEOF_UINT);
ttc.DirectoryOffsets.Add(offset);
}
}
// only read Dsig fields if version 2.0 and last buffer was successfully read
if ((version == 0x00010000 || version == 0x00020000) && buf != null)
{
uint filepos = SIZEOF_FIRSTTHREEFIELDS + DirectoryCount * SIZEOF_UINT;
buf = file.ReadPaddedBuffer(filepos, 3 * SIZEOF_UINT);
if (buf != null)
{
// DsigTag
ttc.DsigTag = new OTTag(buf.GetBuffer());
if ((version == 0x00010000) && ((string)ttc.DsigTag != "DSIG"))
{
// failed v1 trial - reset & bail
ttc.DsigTag = null;
return(ttc);
}
// DsigLength
ttc.DsigLength = buf.GetUint(4);
// DsigOffset
ttc.DsigOffset = buf.GetUint(8);
}
}
}
return(ttc);
}
static int Main( string[] args )
{
if (args.Length == 0) {
Console.WriteLine("DSIGInfo [-v] [-v] [-v] fontfile");
return 0;
}
OTFile f = new OTFile();
Table_DSIG tDSIG = null;
int verbose = 0;
string filename = null;
for ( int i = 0; i < args.Length; i++ ) {
if ( "-v" == args[i] )
verbose++;
else
filename = args[i];
}
if ( !f.open(filename) )
{
Console.WriteLine("Error: Cannot open {0} as font file", filename);
return 0;
}
TTCHeader ttc = null;
if ( f.IsCollection() )
{
ttc = f.GetTTCHeader();
if ( f.GetTableManager().GetUnaliasedTableName(ttc.DsigTag) == "DSIG" )
{
MBOBuffer buf = f.ReadPaddedBuffer(ttc.DsigOffset, ttc.DsigLength);
tDSIG = (Table_DSIG) f.GetTableManager().CreateTableObject(ttc.DsigTag, buf);
}
}
else
{
OTFont fn = f.GetFont(0);
tDSIG = (Table_DSIG) fn.GetTable("DSIG");
}
Console.WriteLine("{0} DSIG table: {1}", filename,
( tDSIG == null ) ? "Absent" : "Present" );
if (tDSIG == null)
return 0;
if ( f.IsCollection() && ttc.version != 0x00020000 )
Console.WriteLine("Warning: TTC has DSIG but header version is 0x{0}, != 0x00020000", ttc.version.ToString("X8"));
if ( tDSIG.usNumSigs != 1 )
Console.WriteLine("NumSigs = {0}", tDSIG.usNumSigs);
for ( uint v = 0; v < tDSIG.usNumSigs ; v++ )
{
Table_DSIG.SignatureBlock sgb;
try {
sgb = tDSIG.GetSignatureBlock(v);
} catch (IndexOutOfRangeException e)
{
Console.WriteLine("Error: Out of Range SignatureBlock {0}", v);
break;
}
SignedCms cms = new SignedCms();
cms.Decode(sgb.bSignature);
if ( cms.SignerInfos.Count > 1 )
Console.WriteLine( "#SignerInfos: {0}", cms.SignerInfos.Count );
foreach ( var si in cms.SignerInfos )
{
Console.WriteLine(si.Certificate);
}
Console.WriteLine( "#Certificates: {0}", cms.Certificates.Count );
foreach ( var x509 in cms.Certificates )
{
if ( verbose > 0 )
{
Console.WriteLine(x509);
}
else
{
Console.WriteLine(x509.IssuerName.Name);
}
};
ASN1 spc = new ASN1(cms.ContentInfo.Content);
ASN1 playload_oid = null;
ASN1 oid = null;
ASN1 digest = null;
ASN1 obsolete = null;
if ( Type.GetType("Mono.Runtime") == null )
{
// DotNet is much saner!
playload_oid = spc[0][0];
obsolete = spc[0][1][0];
oid = spc[1][0][0];
digest = spc[1][1];
}
else
{
playload_oid = spc[0];
obsolete = spc[1][0];
oid = spc[2][0][0];
digest = spc[2][1];
}
string algo = ASN1Convert.ToOid (oid);
Console.WriteLine("Digest Algorithm: {0}", (new Oid(algo)).FriendlyName);
byte[] Value = digest.Value;
StringBuilder hexLine = new StringBuilder ();
for (int i = 0; i < Value.Length; i++) {
hexLine.AppendFormat ("{0} ", Value [i].ToString ("X2"));
}
hexLine.AppendFormat (Environment.NewLine);
Console.WriteLine("{0} Digest: {1}", (new Oid(algo)).FriendlyName, hexLine);
}
return 0;
}