unipdf/model/sigutil/sigutil.go

//
// Copyright 2020 FoxyUtils ehf. All rights reserved.
//
// This is a commercial product and requires a license to operate.
// A trial license can be obtained at https://unidoc.io
//
// DO NOT EDIT: generated by unitwist Go source code obfuscator.
//
// Use of this source code is governed by the UniDoc End User License Agreement
// terms that can be accessed at https://unidoc.io/eula/

package sigutil ;import (_a "bytes";_ba "crypto";_ae "crypto/x509";_aa "encoding/asn1";_ag "encoding/pem";_fb "errors";_bg "fmt";_af "github.com/unidoc/timestamp";_ce "github.com/unidoc/unipdf/v3/common";_ab "golang.org/x/crypto/ocsp";_g "io";_d "io/ioutil";
_c "net/http";_b "time";);

// NewTimestampClient returns a new timestamp client.
func NewTimestampClient ()*TimestampClient {return &TimestampClient {HTTPClient :_cde ()}};

// GetIssuer retrieves the issuer of the provided certificate.
func (_gg *CertClient )GetIssuer (cert *_ae .Certificate )(*_ae .Certificate ,error ){for _ ,_abd :=range cert .IssuingCertificateURL {_e ,_dg :=_gg .Get (_abd );if _dg !=nil {_ce .Log .Debug ("\u0057\u0041\u0052\u004e\u003a\u0020\u0063\u006f\u0075\u006c\u0064\u0020\u006e\u006f\u0074 \u0064\u006f\u0077\u006e\u006c\u006f\u0061\u0064\u0020\u0069\u0073\u0073\u0075e\u0072\u0020\u0066\u006f\u0072\u0020\u0063\u0065\u0072\u0074\u0069\u0066ic\u0061\u0074\u0065\u0020\u0025\u0076\u003a\u0020\u0025\u0076",cert .Subject .CommonName ,_dg );
continue ;};return _e ,nil ;};return nil ,_bg .Errorf ("\u0069\u0073\u0073\u0075e\u0072\u0020\u0063\u0065\u0072\u0074\u0069\u0066\u0069\u0063a\u0074e\u0020\u006e\u006f\u0074\u0020\u0066\u006fu\u006e\u0064");};

// MakeRequest makes a CRL request to the specified server and returns the
// response. If a server URL is not provided, it is extracted from the certificate.
func (_cg *CRLClient )MakeRequest (serverURL string ,cert *_ae .Certificate )([]byte ,error ){if _cg .HTTPClient ==nil {_cg .HTTPClient =_cde ();};if serverURL ==""{if len (cert .CRLDistributionPoints )==0{return nil ,_fb .New ("\u0063e\u0072\u0074i\u0066\u0069\u0063\u0061t\u0065\u0020\u0064o\u0065\u0073\u0020\u006e\u006f\u0074\u0020\u0073\u0070ec\u0069\u0066\u0079 \u0061\u006ey\u0020\u0043\u0052\u004c\u0020\u0073e\u0072\u0076e\u0072\u0073");
};serverURL =cert .CRLDistributionPoints [0];};_ad ,_fbb :=_cg .HTTPClient .Get (serverURL );if _fbb !=nil {return nil ,_fbb ;};defer _ad .Body .Close ();_ac ,_fbb :=_d .ReadAll (_ad .Body );if _fbb !=nil {return nil ,_fbb ;};if _fbf ,_ :=_ag .Decode (_ac );
_fbf !=nil {_ac =_fbf .Bytes ;};return _ac ,nil ;};

// TimestampClient represents a RFC 3161 timestamp client.
// It is used to obtain signed tokens from timestamp authority servers.
type TimestampClient struct{

// HTTPClient is the HTTP client used to make timestamp requests.
// By default, an HTTP client with a 5 second timeout per request is used.
HTTPClient *_c .Client ;

// Callbacks.
BeforeHTTPRequest func (_aea *_c .Request )error ;};

// Get retrieves the certificate at the specified URL.
func (_ga *CertClient )Get (url string )(*_ae .Certificate ,error ){if _ga .HTTPClient ==nil {_ga .HTTPClient =_cde ();};_gf ,_afe :=_ga .HTTPClient .Get (url );if _afe !=nil {return nil ,_afe ;};defer _gf .Body .Close ();_ca ,_afe :=_d .ReadAll (_gf .Body );
if _afe !=nil {return nil ,_afe ;};if _gag ,_ :=_ag .Decode (_ca );_gag !=nil {_ca =_gag .Bytes ;};_cd ,_afe :=_ae .ParseCertificate (_ca );if _afe !=nil {return nil ,_afe ;};return _cd ,nil ;};

// NewCRLClient returns a new CRL client.
func NewCRLClient ()*CRLClient {return &CRLClient {HTTPClient :_cde ()}};

// CRLClient represents a CRL (Certificate revocation list) client.
// It is used to request revocation data from CRL servers.
type CRLClient struct{

// HTTPClient is the HTTP client used to make CRL requests.
// By default, an HTTP client with a 5 second timeout per request is used.
HTTPClient *_c .Client ;};

// IsCA returns true if the provided certificate appears to be a CA certificate.
func (_gdc *CertClient )IsCA (cert *_ae .Certificate )bool {return cert .IsCA &&_a .Equal (cert .RawIssuer ,cert .RawSubject );};

// MakeRequest makes a OCSP request to the specified server and returns
// the parsed and raw responses. If a server URL is not provided, it is
// extracted from the certificate.
func (_ceg *OCSPClient )MakeRequest (serverURL string ,cert ,issuer *_ae .Certificate )(*_ab .Response ,[]byte ,error ){if _ceg .HTTPClient ==nil {_ceg .HTTPClient =_cde ();};if serverURL ==""{if len (cert .OCSPServer )==0{return nil ,nil ,_fb .New ("\u0063e\u0072\u0074i\u0066\u0069\u0063a\u0074\u0065\u0020\u0064\u006f\u0065\u0073 \u006e\u006f\u0074\u0020\u0073\u0070e\u0063\u0069\u0066\u0079\u0020\u0061\u006e\u0079\u0020\u004f\u0043S\u0050\u0020\u0073\u0065\u0072\u0076\u0065\u0072\u0073");
};serverURL =cert .OCSPServer [0];};_db ,_bgg :=_ab .CreateRequest (cert ,issuer ,&_ab .RequestOptions {Hash :_ceg .Hash });if _bgg !=nil {return nil ,nil ,_bgg ;};_cec ,_bgg :=_ceg .HTTPClient .Post (serverURL ,"\u0061p\u0070\u006c\u0069\u0063\u0061\u0074\u0069\u006f\u006e\u002f\u006fc\u0073\u0070\u002d\u0072\u0065\u0071\u0075\u0065\u0073\u0074",_a .NewReader (_db ));
if _bgg !=nil {return nil ,nil ,_bgg ;};defer _cec .Body .Close ();_bc ,_bgg :=_d .ReadAll (_cec .Body );if _bgg !=nil {return nil ,nil ,_bgg ;};if _fg ,_ :=_ag .Decode (_bc );_fg !=nil {_bc =_fg .Bytes ;};_gdcf ,_bgg :=_ab .ParseResponseForCert (_bc ,cert ,issuer );
if _bgg !=nil {return nil ,nil ,_bgg ;};return _gdcf ,_bc ,nil ;};

// NewCertClient returns a new certificate client.
func NewCertClient ()*CertClient {return &CertClient {HTTPClient :_cde ()}};

// NewTimestampRequest returns a new timestamp request based
// on the specified options.
func NewTimestampRequest (body _g .Reader ,opts *_af .RequestOptions )(*_af .Request ,error ){if opts ==nil {opts =&_af .RequestOptions {};};if opts .Hash ==0{opts .Hash =_ba .SHA256 ;};if !opts .Hash .Available (){return nil ,_ae .ErrUnsupportedAlgorithm ;
};_bca :=opts .Hash .New ();if _ ,_fe :=_g .Copy (_bca ,body );_fe !=nil {return nil ,_fe ;};return &_af .Request {HashAlgorithm :opts .Hash ,HashedMessage :_bca .Sum (nil ),Certificates :opts .Certificates ,TSAPolicyOID :opts .TSAPolicyOID ,Nonce :opts .Nonce },nil ;
};

// CertClient represents a X.509 certificate client. Its primary purpose
// is to download certificates.
type CertClient struct{

// HTTPClient is the HTTP client used to make certificate requests.
// By default, an HTTP client with a 5 second timeout per request is used.
HTTPClient *_c .Client ;};

// GetEncodedToken executes the timestamp request and returns the DER encoded
// timestamp token bytes.
func (_fa *TimestampClient )GetEncodedToken (serverURL string ,req *_af .Request )([]byte ,error ){if serverURL ==""{return nil ,_bg .Errorf ("\u006d\u0075\u0073\u0074\u0020\u0070r\u006f\u0076\u0069\u0064\u0065\u0020\u0074\u0069\u006d\u0065\u0073\u0074\u0061m\u0070\u0020\u0073\u0065\u0072\u0076\u0065r\u0020\u0055\u0052\u004c");
};if req ==nil {return nil ,_bg .Errorf ("\u0074\u0069\u006de\u0073\u0074\u0061\u006dp\u0020\u0072\u0065\u0071\u0075\u0065\u0073t\u0020\u0063\u0061\u006e\u006e\u006f\u0074\u0020\u0062\u0065\u0020\u006e\u0069\u006c");};_ggf ,_caa :=req .Marshal ();if _caa !=nil {return nil ,_caa ;
};_caf ,_caa :=_c .NewRequest ("\u0050\u004f\u0053\u0054",serverURL ,_a .NewBuffer (_ggf ));if _caa !=nil {return nil ,_caa ;};_caf .Header .Set ("\u0043\u006f\u006et\u0065\u006e\u0074\u002d\u0054\u0079\u0070\u0065","a\u0070\u0070\u006c\u0069\u0063\u0061t\u0069\u006f\u006e\u002f\u0074\u0069\u006d\u0065\u0073t\u0061\u006d\u0070-\u0071u\u0065\u0072\u0079");
if _fa .BeforeHTTPRequest !=nil {if _gb :=_fa .BeforeHTTPRequest (_caf );_gb !=nil {return nil ,_gb ;};};_ge :=_fa .HTTPClient ;if _ge ==nil {_ge =_cde ();};_fc ,_caa :=_ge .Do (_caf );if _caa !=nil {return nil ,_caa ;};defer _fc .Body .Close ();_bag ,_caa :=_d .ReadAll (_fc .Body );
if _caa !=nil {return nil ,_caa ;};if _fc .StatusCode !=_c .StatusOK {return nil ,_bg .Errorf ("\u0075\u006e\u0065x\u0070\u0065\u0063\u0074e\u0064\u0020\u0048\u0054\u0054\u0050\u0020s\u0074\u0061\u0074\u0075\u0073\u0020\u0063\u006f\u0064\u0065\u003a\u0020\u0025\u0064",_fc .StatusCode );
};var _ed struct{Version _aa .RawValue ;Content _aa .RawValue ;};if _ ,_caa =_aa .Unmarshal (_bag ,&_ed );_caa !=nil {return nil ,_caa ;};return _ed .Content .FullBytes ,nil ;};

// NewOCSPClient returns a new OCSP client.
func NewOCSPClient ()*OCSPClient {return &OCSPClient {HTTPClient :_cde (),Hash :_ba .SHA1 }};

// OCSPClient represents a OCSP (Online Certificate Status Protocol) client.
// It is used to request revocation data from OCSP servers.
type OCSPClient struct{

// HTTPClient is the HTTP client used to make OCSP requests.
// By default, an HTTP client with a 5 second timeout per request is used.
HTTPClient *_c .Client ;

// Hash is the hash function  used when constructing the OCSP
// requests. If zero, SHA-1 will be used.
Hash _ba .Hash ;};func _cde ()*_c .Client {return &_c .Client {Timeout :5*_b .Second }};