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 (_d "bytes";_b "crypto";_aa "crypto/x509";_df "encoding/asn1";_a "encoding/pem";_fc "errors";_c "fmt";_dg "github.com/unidoc/timestamp";_cg "github.com/unidoc/unipdf/v3/common";_bg "golang.org/x/crypto/ocsp";_g "io";_ge "io/ioutil";
_bd "net/http";_f "time";);

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

// Get retrieves the certificate at the specified URL.
func (_bc *CertClient )Get (url string )(*_aa .Certificate ,error ){if _bc .HTTPClient ==nil {_bc .HTTPClient =_ac ();};_bcf ,_cd :=_bc .HTTPClient .Get (url );if _cd !=nil {return nil ,_cd ;};defer _bcf .Body .Close ();_ad ,_cd :=_ge .ReadAll (_bcf .Body );
if _cd !=nil {return nil ,_cd ;};if _dge ,_ :=_a .Decode (_ad );_dge !=nil {_ad =_dge .Bytes ;};_eb ,_cd :=_aa .ParseCertificate (_ad );if _cd !=nil {return nil ,_cd ;};return _eb ,nil ;};

// 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 (_dee *OCSPClient )MakeRequest (serverURL string ,cert ,issuer *_aa .Certificate )(*_bg .Response ,[]byte ,error ){if _dee .HTTPClient ==nil {_dee .HTTPClient =_ac ();};if serverURL ==""{if len (cert .OCSPServer )==0{return nil ,nil ,_fc .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];};_ebf ,_fe :=_bg .CreateRequest (cert ,issuer ,&_bg .RequestOptions {Hash :_dee .Hash });if _fe !=nil {return nil ,nil ,_fe ;};_adf ,_fe :=_dee .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",_d .NewReader (_ebf ));
if _fe !=nil {return nil ,nil ,_fe ;};defer _adf .Body .Close ();_af ,_fe :=_ge .ReadAll (_adf .Body );if _fe !=nil {return nil ,nil ,_fe ;};if _ae ,_ :=_a .Decode (_af );_ae !=nil {_af =_ae .Bytes ;};_deea ,_fe :=_bg .ParseResponseForCert (_af ,cert ,issuer );
if _fe !=nil {return nil ,nil ,_fe ;};return _deea ,_af ,nil ;};

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

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

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

// GetIssuer retrieves the issuer of the provided certificate.
func (_bgb *CertClient )GetIssuer (cert *_aa .Certificate )(*_aa .Certificate ,error ){for _ ,_cdc :=range cert .IssuingCertificateURL {_ebg ,_deg :=_bgb .Get (_cdc );if _deg !=nil {_cg .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 ,_deg );
continue ;};return _ebg ,nil ;};return nil ,_c .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");};

// 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 *_bd .Client ;};

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

// GetEncodedToken executes the timestamp request and returns the DER encoded
// timestamp token bytes.
func (_dfe *TimestampClient )GetEncodedToken (serverURL string ,req *_dg .Request )([]byte ,error ){if serverURL ==""{return nil ,_c .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 ,_c .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");};_dfa ,_gef :=req .Marshal ();if _gef !=nil {return nil ,_gef ;
};_db :=_dfe .HTTPClient ;if _db ==nil {_db =_ac ();};_fag ,_gef :=_db .Post (serverURL ,"a\u0070\u0070\u006c\u0069\u0063\u0061t\u0069\u006f\u006e\u002f\u0074\u0069\u006d\u0065\u0073t\u0061\u006d\u0070-\u0071u\u0065\u0072\u0079",_d .NewBuffer (_dfa ));
if _gef !=nil {return nil ,_gef ;};defer _fag .Body .Close ();_cb ,_gef :=_ge .ReadAll (_fag .Body );if _gef !=nil {return nil ,_gef ;};if _fag .StatusCode !=_bd .StatusOK {return nil ,_c .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",_fag .StatusCode );
};var _ba struct{Version _df .RawValue ;Content _df .RawValue ;};if _ ,_gef =_df .Unmarshal (_cb ,&_ba );_gef !=nil {return nil ,_gef ;};return _ba .Content .FullBytes ,nil ;};func _ac ()*_bd .Client {return &_bd .Client {Timeout :5*_f .Second }};

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

// 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 *_bd .Client ;};

// 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 *_bd .Client ;};

// 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 (_gf *CRLClient )MakeRequest (serverURL string ,cert *_aa .Certificate )([]byte ,error ){if _gf .HTTPClient ==nil {_gf .HTTPClient =_ac ();};if serverURL ==""{if len (cert .CRLDistributionPoints )==0{return nil ,_fc .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];};_bga ,_gg :=_gf .HTTPClient .Get (serverURL );if _gg !=nil {return nil ,_gg ;};defer _bga .Body .Close ();_bcb ,_gg :=_ge .ReadAll (_bga .Body );if _gg !=nil {return nil ,_gg ;};if _ed ,_ :=_a .Decode (_bcb );
_ed !=nil {_bcb =_ed .Bytes ;};return _bcb ,nil ;};

// 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 *_bd .Client ;

// Hash is the hash function  used when constructing the OCSP
// requests. If zero, SHA-1 will be used.
Hash _b .Hash ;};