src/org/cacert/gigi/pages/account/CertificateIssueForm.java

   1 package org.cacert.gigi.pages.account;
   2
   3 import java.io.IOException;
   4 import java.io.PrintWriter;
   5 import java.security.GeneralSecurityException;
   6 import java.security.PublicKey;
   7 import java.security.interfaces.DSAPublicKey;
   8 import java.security.interfaces.ECPublicKey;
   9 import java.security.interfaces.RSAPublicKey;
  10 import java.sql.SQLException;
  11 import java.util.Base64;
  12 import java.util.HashMap;
  13 import java.util.LinkedHashSet;
  14 import java.util.Map;
  15 import java.util.Set;
  16 import java.util.TreeSet;
  17
  18 import javax.servlet.http.HttpServletRequest;
  19
  20 import org.cacert.gigi.Certificate;
  21 import org.cacert.gigi.Certificate.CSRType;
  22 import org.cacert.gigi.Certificate.SANType;
  23 import org.cacert.gigi.Certificate.SubjectAlternateName;
  24 import org.cacert.gigi.CertificateProfile;
  25 import org.cacert.gigi.Digest;
  26 import org.cacert.gigi.GigiApiException;
  27 import org.cacert.gigi.User;
  28 import org.cacert.gigi.crypto.SPKAC;
  29 import org.cacert.gigi.localisation.Language;
  30 import org.cacert.gigi.output.Form;
  31 import org.cacert.gigi.output.template.HashAlgorithms;
  32 import org.cacert.gigi.output.template.IterableDataset;
  33 import org.cacert.gigi.output.template.Template;
  34 import org.cacert.gigi.pages.LoginPage;
  35 import org.cacert.gigi.pages.Page;
  36 import org.cacert.gigi.util.PEM;
  37 import org.cacert.gigi.util.RandomToken;
  38
  39 import sun.security.pkcs.PKCS9Attribute;
  40 import sun.security.pkcs10.PKCS10;
  41 import sun.security.pkcs10.PKCS10Attribute;
  42 import sun.security.pkcs10.PKCS10Attributes;
  43 import sun.security.util.DerInputStream;
  44 import sun.security.util.DerValue;
  45 import sun.security.x509.AVA;
  46 import sun.security.x509.AlgorithmId;
  47 import sun.security.x509.CertificateExtensions;
  48 import sun.security.x509.DNSName;
  49 import sun.security.x509.ExtendedKeyUsageExtension;
  50 import sun.security.x509.Extension;
  51 import sun.security.x509.GeneralName;
  52 import sun.security.x509.GeneralNameInterface;
  53 import sun.security.x509.GeneralNames;
  54 import sun.security.x509.RDN;
  55 import sun.security.x509.RFC822Name;
  56 import sun.security.x509.SubjectAlternativeNameExtension;
  57 import sun.security.x509.X500Name;
  58
  59 /**
  60  * This class represents a form that is used for issuing certificates. This
  61  * class uses "sun.security" and therefore needs "-XDignore.symbol.file"
  62  */
  63 public class CertificateIssueForm extends Form {
  64
  65     private final static Template t = new Template(CertificateIssueForm.class.getResource("CertificateIssueForm.templ"));
  66
  67     private final static Template tIni = new Template(CertificateAdd.class.getResource("RequestCertificate.templ"));
  68
  69     User u;
  70
  71     private CSRType csrType;
  72
  73     String csr;
  74
  75     String spkacChallenge;
  76
  77     String CN = "";
  78
  79     Set<SubjectAlternateName> SANs = new LinkedHashSet<>();
  80
  81     Digest selectedDigest = Digest.getDefault();
  82
  83     boolean login;
  84
  85     public CertificateIssueForm(HttpServletRequest hsr) {
  86         super(hsr);
  87         u = Page.getUser(hsr);
  88         spkacChallenge = RandomToken.generateToken(16);
  89     }
  90
  91     Certificate result;
  92
  93     public Certificate getResult() {
  94         return result;
  95     }
  96
  97     @Override
  98     public boolean submit(PrintWriter out, HttpServletRequest req) {
  99         String csr = req.getParameter("CSR");
 100         String spkac = req.getParameter("SPKAC");
 101         try {
 102             try {
 103                 if (csr != null) {
 104                     byte[] data = PEM.decode("(NEW )?CERTIFICATE REQUEST", csr);
 105                     PKCS10 parsed = new PKCS10(data);
 106                     PKCS10Attributes atts = parsed.getAttributes();
 107
 108                     for (PKCS10Attribute b : atts.getAttributes()) {
 109
 110                         if ( !b.getAttributeId().equals((Object) PKCS9Attribute.EXTENSION_REQUEST_OID)) {
 111                             // unknown attrib
 112                             continue;
 113                         }
 114
 115                         for (RDN r : parsed.getSubjectName().rdns()) {
 116                             for (AVA a : r.avas()) {
 117                                 if (a.getObjectIdentifier().equals((Object) PKCS9Attribute.EMAIL_ADDRESS_OID)) {
 118                                     SANs.add(new SubjectAlternateName(SANType.EMAIL, a.getValueString()));
 119                                 } else if (a.getObjectIdentifier().equals((Object) X500Name.commonName_oid)) {
 120                                     CN = a.getValueString();
 121                                 }
 122                             }
 123                         }
 124
 125                         for (Extension c : ((CertificateExtensions) b.getAttributeValue()).getAllExtensions()) {
 126                             if (c instanceof SubjectAlternativeNameExtension) {
 127
 128                                 SubjectAlternativeNameExtension san = (SubjectAlternativeNameExtension) c;
 129                                 GeneralNames obj = san.get(SubjectAlternativeNameExtension.SUBJECT_NAME);
 130                                 for (int i = 0; i < obj.size(); i++) {
 131                                     GeneralName generalName = obj.get(i);
 132                                     GeneralNameInterface peeled = generalName.getName();
 133                                     if (peeled instanceof DNSName) {
 134                                         SANs.add(new SubjectAlternateName(SANType.DNS, ((DNSName) peeled).getName()));
 135                                     } else if (peeled instanceof RFC822Name) {
 136                                         SANs.add(new SubjectAlternateName(SANType.EMAIL, ((RFC822Name) peeled).getName()));
 137                                     }
 138                                 }
 139                             } else if (c instanceof ExtendedKeyUsageExtension) {
 140                                 ExtendedKeyUsageExtension ekue = (ExtendedKeyUsageExtension) c;
 141                                 for (String s : ekue.getExtendedKeyUsage()) {
 142                                     if (s.equals("1.3.6.1.5.5.7.3.1")) {
 143                                         // server
 144                                     } else if (s.equals("1.3.6.1.5.5.7.3.2")) {
 145                                         // client
 146                                     } else if (s.equals("1.3.6.1.5.5.7.3.3")) {
 147                                         // code sign
 148                                     } else if (s.equals("1.3.6.1.5.5.7.3.4")) {
 149                                         // emailProtection
 150                                     } else if (s.equals("1.3.6.1.5.5.7.3.8")) {
 151                                         // timestamp
 152                                     } else if (s.equals("1.3.6.1.5.5.7.3.9")) {
 153                                         // OCSP
 154                                     }
 155                                 }
 156                             } else {
 157                                 // Unknown requested extension
 158                             }
 159                         }
 160
 161                     }
 162                     out.println(parsed.getSubjectName().getCommonName());
 163                     out.println(parsed.getSubjectName().getCountry());
 164
 165                     out.println("CSR DN: " + parsed.getSubjectName() + "<br/>");
 166                     PublicKey pk = parsed.getSubjectPublicKeyInfo();
 167                     checkKeyStrength(pk, out);
 168                     String sign = getSignatureAlgorithm(data);
 169                     out.println("<br/>digest: " + sign + "<br/>");
 170
 171                     this.csr = csr;
 172                     this.csrType = CSRType.CSR;
 173                 } else if (spkac != null) {
 174                     String cleanedSPKAC = spkac.replaceAll("[\r\n]", "");
 175                     byte[] data = Base64.getDecoder().decode(cleanedSPKAC);
 176                     SPKAC parsed = new SPKAC(data);
 177                     if ( !parsed.getChallenge().equals(spkacChallenge)) {
 178                         throw new GigiApiException("Challenge mismatch");
 179                     }
 180                     checkKeyStrength(parsed.getPubkey(), out);
 181                     String sign = getSignatureAlgorithm(data);
 182                     out.println("<br/>digest: " + sign + "<br/>");
 183
 184                     // spkacChallenge
 185                     this.csr = "SPKAC=" + cleanedSPKAC;
 186                     this.csrType = CSRType.SPKAC;
 187
 188                 } else {
 189                     login = "1".equals(req.getParameter("login"));
 190                     CN = req.getParameter("CN");
 191                     SANs = parseSANBox(req.getParameter("SANs"));
 192                     String hashAlg = req.getParameter("hash_alg");
 193                     if (hashAlg != null) {
 194                         selectedDigest = Digest.valueOf(hashAlg);
 195                     }
 196                     if (req.getParameter("CCA") == null) {
 197                         outputError(out, req, "You need to accept the CCA.");
 198                         return false;
 199                     }
 200                     CertificateProfile profile = CertificateProfile.getByName(req.getParameter("profile"));
 201
 202                     result = new Certificate(LoginPage.getUser(req).getId(), "/commonName=CAcert WoT User", selectedDigest.toString(), //
 203                             this.csr, this.csrType, profile, SANs.toArray(new SubjectAlternateName[SANs.size()]));
 204                     result.issue().waitFor(60000);
 205                     return true;
 206                 }
 207             } catch (IOException e) {
 208                 e.printStackTrace();
 209             } catch (IllegalArgumentException e) {
 210                 throw new GigiApiException("Certificate Request format is invalid.");
 211             } catch (GeneralSecurityException e) {
 212                 throw new GigiApiException("Certificate Request format is invalid.");
 213             } catch (InterruptedException e) {
 214                 e.printStackTrace();
 215             } catch (SQLException e) {
 216                 throw new GigiApiException(e);
 217             }
 218         } catch (GigiApiException e) {
 219             e.format(out, Page.getLanguage(req));
 220         }
 221         return false;
 222     }
 223
 224     private TreeSet<SubjectAlternateName> parseSANBox(String SANs) {
 225         String[] SANparts = SANs.split("[\r\n]+");
 226         TreeSet<SubjectAlternateName> parsedNames = new TreeSet<>();
 227         for (String SANline : SANparts) {
 228             String[] parts = SANline.split(":", 2);
 229             SANType t = Certificate.SANType.valueOf(parts[0].toUpperCase());
 230             if (t == null || parts.length == 1) {
 231                 continue;
 232             }
 233             parsedNames.add(new SubjectAlternateName(t, parts[1]));
 234         }
 235         return parsedNames;
 236     }
 237
 238     private void checkKeyStrength(PublicKey pk, PrintWriter out) {
 239         out.println("Type: " + pk.getAlgorithm() + "<br/>");
 240         if (pk instanceof RSAPublicKey) {
 241             out.println("Exponent: " + ((RSAPublicKey) pk).getPublicExponent() + "<br/>");
 242             out.println("Length: " + ((RSAPublicKey) pk).getModulus().bitLength());
 243         } else if (pk instanceof DSAPublicKey) {
 244             DSAPublicKey dpk = (DSAPublicKey) pk;
 245             out.println("Length: " + dpk.getY().bitLength() + "<br/>");
 246             out.println(dpk.getParams());
 247         } else if (pk instanceof ECPublicKey) {
 248             ECPublicKey epk = (ECPublicKey) pk;
 249             out.println("Length-x: " + epk.getW().getAffineX().bitLength() + "<br/>");
 250             out.println("Length-y: " + epk.getW().getAffineY().bitLength() + "<br/>");
 251             out.println(epk.getParams().getCurve());
 252         }
 253     }
 254
 255     private static String getSignatureAlgorithm(byte[] data) throws IOException {
 256         DerInputStream in = new DerInputStream(data);
 257         DerValue[] seq = in.getSequence(3);
 258         return AlgorithmId.parse(seq[1]).getName();
 259     }
 260
 261     @Override
 262     public void output(PrintWriter out, Language l, Map<String, Object> vars) {
 263         if (csr == null) {
 264             HashMap<String, Object> vars2 = new HashMap<String, Object>(vars);
 265             vars2.put("csrf", getCSRFToken());
 266             vars2.put("csrf_name", getCsrfFieldName());
 267             vars2.put("spkacChallenge", spkacChallenge);
 268             tIni.output(out, l, vars2);
 269             return;
 270         } else {
 271             super.output(out, l, vars);
 272         }
 273     }
 274
 275     @Override
 276     protected void outputContent(PrintWriter out, Language l, Map<String, Object> vars) {
 277         HashMap<String, Object> vars2 = new HashMap<String, Object>(vars);
 278         vars2.put("CCA", "<a href='/policy/CAcertCommunityAgreement.html'>CCA</a>");
 279
 280         StringBuffer content = new StringBuffer();
 281         for (SubjectAlternateName SAN : SANs) {
 282             content.append(SAN.getType().toString().toLowerCase());
 283             content.append(':');
 284             content.append(SAN.getName());
 285             content.append('\n');
 286         }
 287
 288         vars2.put("CN", CN);
 289         vars2.put("emails", content.toString());
 290         vars2.put("hashs", new HashAlgorithms(selectedDigest));
 291         vars2.put("profiles", new IterableDataset() {
 292
 293             int i = 1;
 294
 295             @Override
 296             public boolean next(Language l, Map<String, Object> vars) {
 297                 CertificateProfile cp = CertificateProfile.getById(i++);
 298                 if (cp == null) {
 299                     return false;
 300                 }
 301                 vars.put("key", cp.getKeyName());
 302                 vars.put("name", cp.getVisibleName());
 303                 return true;
 304             }
 305         });
 306         t.output(out, l, vars2);
 307     }
 308 }