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

   1 package org.cacert.gigi.pages.account.certs;
   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.GigiApiException;
  21 import org.cacert.gigi.crypto.SPKAC;
  22 import org.cacert.gigi.dbObjects.Certificate;
  23 import org.cacert.gigi.dbObjects.CertificateProfile;
  24 import org.cacert.gigi.dbObjects.Digest;
  25 import org.cacert.gigi.dbObjects.User;
  26 import org.cacert.gigi.dbObjects.Certificate.CSRType;
  27 import org.cacert.gigi.dbObjects.Certificate.SANType;
  28 import org.cacert.gigi.dbObjects.Certificate.SubjectAlternateName;
  29 import org.cacert.gigi.localisation.Language;
  30 import org.cacert.gigi.output.CertificateValiditySelector;
  31 import org.cacert.gigi.output.Form;
  32 import org.cacert.gigi.output.template.HashAlgorithms;
  33 import org.cacert.gigi.output.template.IterableDataset;
  34 import org.cacert.gigi.output.template.Template;
  35 import org.cacert.gigi.pages.LoginPage;
  36 import org.cacert.gigi.pages.Page;
  37 import org.cacert.gigi.util.PEM;
  38 import org.cacert.gigi.util.RandomToken;
  39
  40 import sun.security.pkcs.PKCS9Attribute;
  41 import sun.security.pkcs10.PKCS10;
  42 import sun.security.pkcs10.PKCS10Attribute;
  43 import sun.security.pkcs10.PKCS10Attributes;
  44 import sun.security.util.DerInputStream;
  45 import sun.security.util.DerValue;
  46 import sun.security.util.ObjectIdentifier;
  47 import sun.security.x509.AVA;
  48 import sun.security.x509.AlgorithmId;
  49 import sun.security.x509.CertificateExtensions;
  50 import sun.security.x509.DNSName;
  51 import sun.security.x509.ExtendedKeyUsageExtension;
  52 import sun.security.x509.Extension;
  53 import sun.security.x509.GeneralName;
  54 import sun.security.x509.GeneralNameInterface;
  55 import sun.security.x509.GeneralNames;
  56 import sun.security.x509.PKIXExtensions;
  57 import sun.security.x509.RDN;
  58 import sun.security.x509.RFC822Name;
  59 import sun.security.x509.SubjectAlternativeNameExtension;
  60 import sun.security.x509.X500Name;
  61
  62 /**
  63  * This class represents a form that is used for issuing certificates. This
  64  * class uses "sun.security" and therefore needs "-XDignore.symbol.file"
  65  */
  66 public class CertificateIssueForm extends Form {
  67
  68     public static final String DEFAULT_CN = "CAcert WoT User";
  69
  70     private final static Template t = new Template(CertificateIssueForm.class.getResource("CertificateIssueForm.templ"));
  71
  72     private final static Template tIni = new Template(CertificateAdd.class.getResource("RequestCertificate.templ"));
  73
  74     public static final ObjectIdentifier OID_KEY_USAGE_SSL_SERVER = ObjectIdentifier.newInternal(new int[] {
  75             1, 3, 6, 1, 5, 5, 7, 3, 1
  76     });
  77
  78     public static final ObjectIdentifier OID_KEY_USAGE_SSL_CLIENT = ObjectIdentifier.newInternal(new int[] {
  79             1, 3, 6, 1, 5, 5, 7, 3, 2
  80     });
  81
  82     public static final ObjectIdentifier OID_KEY_USAGE_CODESIGN = ObjectIdentifier.newInternal(new int[] {
  83             1, 3, 6, 1, 5, 5, 7, 3, 3
  84     });
  85
  86     public static final ObjectIdentifier OID_KEY_USAGE_EMAIL_PROTECTION = ObjectIdentifier.newInternal(new int[] {
  87             1, 3, 6, 1, 5, 5, 7, 3, 4
  88     });
  89
  90     public static final ObjectIdentifier OID_KEY_USAGE_TIMESTAMP = ObjectIdentifier.newInternal(new int[] {
  91             1, 3, 6, 1, 5, 5, 7, 3, 8
  92     });
  93
  94     public static final ObjectIdentifier OID_KEY_USAGE_OCSP = ObjectIdentifier.newInternal(new int[] {
  95             1, 3, 6, 1, 5, 5, 7, 3, 9
  96     });
  97
  98     private User u;
  99
 100     private CSRType csrType;
 101
 102     private String csr;
 103
 104     private String spkacChallenge;
 105
 106     public String CN = DEFAULT_CN;
 107
 108     private Set<SubjectAlternateName> SANs = new LinkedHashSet<>();
 109
 110     private Digest selectedDigest = Digest.getDefault();
 111
 112     CertificateValiditySelector issueDate = new CertificateValiditySelector();
 113
 114     private boolean login;
 115
 116     private CertificateProfile profile = CertificateProfile.getById(1);
 117
 118     public CertificateIssueForm(HttpServletRequest hsr) {
 119         super(hsr);
 120         u = Page.getUser(hsr);
 121         spkacChallenge = RandomToken.generateToken(16);
 122     }
 123
 124     private Certificate result;
 125
 126     public Certificate getResult() {
 127         return result;
 128     }
 129
 130     @Override
 131     public boolean submit(PrintWriter out, HttpServletRequest req) {
 132         String csr = req.getParameter("CSR");
 133         String spkac = req.getParameter("SPKAC");
 134         try {
 135             try {
 136                 if (csr != null) {
 137                     byte[] data = PEM.decode("(NEW )?CERTIFICATE REQUEST", csr);
 138                     PKCS10 parsed = new PKCS10(data);
 139                     PKCS10Attributes atts = parsed.getAttributes();
 140
 141                     for (PKCS10Attribute b : atts.getAttributes()) {
 142
 143                         if ( !b.getAttributeId().equals((Object) PKCS9Attribute.EXTENSION_REQUEST_OID)) {
 144                             // unknown attrib
 145                             continue;
 146                         }
 147
 148                         for (RDN r : parsed.getSubjectName().rdns()) {
 149                             for (AVA a : r.avas()) {
 150                                 if (a.getObjectIdentifier().equals((Object) PKCS9Attribute.EMAIL_ADDRESS_OID)) {
 151                                     SANs.add(new SubjectAlternateName(SANType.EMAIL, a.getValueString()));
 152                                 } else if (a.getObjectIdentifier().equals((Object) X500Name.commonName_oid)) {
 153                                     String value = a.getValueString();
 154                                     if (value.contains(".") && !value.contains(" ")) {
 155                                         SANs.add(new SubjectAlternateName(SANType.DNS, value));
 156                                     } else {
 157                                         CN = value;
 158                                     }
 159                                 } else if (a.getObjectIdentifier().equals((Object) PKIXExtensions.SubjectAlternativeName_Id)) {
 160                                     // parse invalid SANs
 161                                 }
 162                             }
 163                         }
 164
 165                         for (Extension c : ((CertificateExtensions) b.getAttributeValue()).getAllExtensions()) {
 166                             if (c instanceof SubjectAlternativeNameExtension) {
 167
 168                                 SubjectAlternativeNameExtension san = (SubjectAlternativeNameExtension) c;
 169                                 GeneralNames obj = san.get(SubjectAlternativeNameExtension.SUBJECT_NAME);
 170                                 for (int i = 0; i < obj.size(); i++) {
 171                                     GeneralName generalName = obj.get(i);
 172                                     GeneralNameInterface peeled = generalName.getName();
 173                                     if (peeled instanceof DNSName) {
 174                                         SANs.add(new SubjectAlternateName(SANType.DNS, ((DNSName) peeled).getName()));
 175                                     } else if (peeled instanceof RFC822Name) {
 176                                         SANs.add(new SubjectAlternateName(SANType.EMAIL, ((RFC822Name) peeled).getName()));
 177                                     }
 178                                 }
 179                             } else if (c instanceof ExtendedKeyUsageExtension) {
 180                                 ExtendedKeyUsageExtension ekue = (ExtendedKeyUsageExtension) c;
 181                                 for (String s : ekue.getExtendedKeyUsage()) {
 182                                     if (s.equals(OID_KEY_USAGE_SSL_SERVER.toString())) {
 183                                         // server
 184                                         profile = CertificateProfile.getByName("server");
 185                                     } else if (s.equals(OID_KEY_USAGE_SSL_CLIENT.toString())) {
 186                                         // client
 187                                         profile = CertificateProfile.getByName("client");
 188                                     } else if (s.equals(OID_KEY_USAGE_CODESIGN.toString())) {
 189                                         // code sign
 190                                     } else if (s.equals(OID_KEY_USAGE_EMAIL_PROTECTION.toString())) {
 191                                         // emailProtection
 192                                         profile = CertificateProfile.getByName("mail");
 193                                     } else if (s.equals(OID_KEY_USAGE_TIMESTAMP.toString())) {
 194                                         // timestamp
 195                                     } else if (s.equals(OID_KEY_USAGE_OCSP.toString())) {
 196                                         // OCSP
 197                                     }
 198                                 }
 199                             } else {
 200                                 // Unknown requested extension
 201                             }
 202                         }
 203
 204                     }
 205                     out.println(parsed.getSubjectName().getCommonName());
 206                     out.println(parsed.getSubjectName().getCountry());
 207
 208                     out.println("CSR DN: " + parsed.getSubjectName() + "<br/>");
 209                     PublicKey pk = parsed.getSubjectPublicKeyInfo();
 210                     checkKeyStrength(pk, out);
 211                     String sign = getSignatureAlgorithm(data);
 212                     guessDigest(sign);
 213
 214                     out.println("<br/>digest: " + sign + "<br/>");
 215
 216                     this.csr = csr;
 217                     this.csrType = CSRType.CSR;
 218                 } else if (spkac != null) {
 219                     String cleanedSPKAC = spkac.replaceAll("[\r\n]", "");
 220                     byte[] data = Base64.getDecoder().decode(cleanedSPKAC);
 221                     SPKAC parsed = new SPKAC(data);
 222                     if ( !parsed.getChallenge().equals(spkacChallenge)) {
 223                         throw new GigiApiException("Challenge mismatch");
 224                     }
 225                     checkKeyStrength(parsed.getPubkey(), out);
 226                     String sign = getSignatureAlgorithm(data);
 227                     guessDigest(sign);
 228                     out.println("<br/>digest: " + sign + "<br/>");
 229
 230                     // spkacChallenge
 231                     this.csr = "SPKAC=" + cleanedSPKAC;
 232                     this.csrType = CSRType.SPKAC;
 233
 234                 } else {
 235                     login = "1".equals(req.getParameter("login"));
 236                     issueDate.update(req);
 237                     CN = req.getParameter("CN");
 238                     String hashAlg = req.getParameter("hash_alg");
 239                     if (hashAlg != null) {
 240                         selectedDigest = Digest.valueOf(hashAlg);
 241                     }
 242                     profile = CertificateProfile.getByName(req.getParameter("profile"));
 243
 244                     String pDNS = null;
 245                     String pMail = null;
 246                     Set<SubjectAlternateName> filteredSANs = new LinkedHashSet<>();
 247                     boolean server = profile.getKeyName().equals("server");
 248                     for (SubjectAlternateName san : parseSANBox(req.getParameter("SANs"))) {
 249                         if (san.getType() == SANType.DNS) {
 250                             if (u.isValidDomain(san.getName()) && server) {
 251                                 if (pDNS == null) {
 252                                     pDNS = san.getName();
 253                                 }
 254                                 filteredSANs.add(san);
 255                                 continue;
 256                             }
 257                         } else if (san.getType() == SANType.EMAIL) {
 258                             if (u.isValidEmail(san.getName()) && !server) {
 259                                 if (pMail == null) {
 260                                     pMail = san.getName();
 261                                 }
 262                                 filteredSANs.add(san);
 263                                 continue;
 264                             }
 265                         }
 266                         outputError(out, req, "The requested Subject alternate name \"%s\" has been removed.",//
 267                                 san.getType().toString().toLowerCase() + ":" + san.getName());
 268                     }
 269                     SANs = filteredSANs;
 270                     if ( !u.isValidName(CN) && !server && !CN.equals(DEFAULT_CN)) {
 271                         CN = DEFAULT_CN;
 272                         outputError(out, req, "The real name entered cannot be verified with your account.");
 273                     }
 274
 275                     final StringBuffer subject = new StringBuffer();
 276                     if (server && pDNS != null) {
 277                         subject.append("/commonName=");
 278                         subject.append(pDNS);
 279                         if (pMail != null) {
 280                             outputError(out, req, "No email is included in this certificate.");
 281                         }
 282                         if (CN.equals("")) {
 283                             CN = "";
 284                             outputError(out, req, "No real name is included in this certificate.");
 285                         }
 286                     } else {
 287                         subject.append("/commonName=");
 288                         subject.append(CN);
 289                         if (pMail != null) {
 290                             subject.append("/emailAddress=");
 291                             subject.append(pMail);
 292                         }
 293                     }
 294                     if (req.getParameter("CCA") == null) {
 295                         outputError(out, req, "You need to accept the CCA.");
 296                     }
 297                     if (isFailed(out)) {
 298                         return false;
 299                     }
 300
 301                     result = new Certificate(LoginPage.getUser(req).getId(), subject.toString(), selectedDigest.toString(), //
 302                             this.csr, this.csrType, profile, SANs.toArray(new SubjectAlternateName[SANs.size()]));
 303                     result.issue(issueDate.getFrom(), issueDate.getTo()).waitFor(60000);
 304                     return true;
 305                 }
 306             } catch (IOException e) {
 307                 e.printStackTrace();
 308             } catch (IllegalArgumentException e) {
 309                 e.printStackTrace();
 310                 throw new GigiApiException("Certificate Request format is invalid.");
 311             } catch (GeneralSecurityException e) {
 312                 e.printStackTrace();
 313                 throw new GigiApiException("Certificate Request format is invalid.");
 314             } catch (InterruptedException e) {
 315                 e.printStackTrace();
 316             } catch (SQLException e) {
 317                 throw new GigiApiException(e);
 318             }
 319         } catch (GigiApiException e) {
 320             e.format(out, Page.getLanguage(req));
 321         }
 322         return false;
 323     }
 324
 325     private void guessDigest(String sign) {
 326         if (sign.toLowerCase().startsWith("sha512")) {
 327             selectedDigest = Digest.SHA512;
 328         } else if (sign.toLowerCase().startsWith("sha384")) {
 329             selectedDigest = Digest.SHA384;
 330         }
 331     }
 332
 333     private TreeSet<SubjectAlternateName> parseSANBox(String SANs) {
 334         String[] SANparts = SANs.split("[\r\n]+|, *");
 335         TreeSet<SubjectAlternateName> parsedNames = new TreeSet<>();
 336         for (String SANline : SANparts) {
 337             String[] parts = SANline.split(":", 2);
 338             if (parts.length == 1) {
 339                 if (parts[0].trim().equals("")) {
 340                     continue;
 341                 }
 342                 if (parts[0].contains("@")) {
 343                     parsedNames.add(new SubjectAlternateName(SANType.EMAIL, parts[0]));
 344                 } else {
 345                     parsedNames.add(new SubjectAlternateName(SANType.DNS, parts[0]));
 346                 }
 347                 continue;
 348             }
 349             try {
 350                 SANType t = Certificate.SANType.valueOf(parts[0].toUpperCase());
 351                 if (t == null) {
 352                     continue;
 353                 }
 354                 parsedNames.add(new SubjectAlternateName(t, parts[1]));
 355             } catch (IllegalArgumentException e) {
 356                 // invalid enum type
 357                 continue;
 358             }
 359         }
 360         return parsedNames;
 361     }
 362
 363     private void checkKeyStrength(PublicKey pk, PrintWriter out) {
 364         out.println("Type: " + pk.getAlgorithm() + "<br/>");
 365         if (pk instanceof RSAPublicKey) {
 366             out.println("Exponent: " + ((RSAPublicKey) pk).getPublicExponent() + "<br/>");
 367             out.println("Length: " + ((RSAPublicKey) pk).getModulus().bitLength());
 368         } else if (pk instanceof DSAPublicKey) {
 369             DSAPublicKey dpk = (DSAPublicKey) pk;
 370             out.println("Length: " + dpk.getY().bitLength() + "<br/>");
 371             out.println(dpk.getParams());
 372         } else if (pk instanceof ECPublicKey) {
 373             ECPublicKey epk = (ECPublicKey) pk;
 374             out.println("Length-x: " + epk.getW().getAffineX().bitLength() + "<br/>");
 375             out.println("Length-y: " + epk.getW().getAffineY().bitLength() + "<br/>");
 376             out.println(epk.getParams().getCurve());
 377         }
 378     }
 379
 380     private static String getSignatureAlgorithm(byte[] data) throws IOException {
 381         DerInputStream in = new DerInputStream(data);
 382         DerValue[] seq = in.getSequence(3);
 383         return AlgorithmId.parse(seq[1]).getName();
 384     }
 385
 386     @Override
 387     public void output(PrintWriter out, Language l, Map<String, Object> vars) {
 388         if (csr == null) {
 389             HashMap<String, Object> vars2 = new HashMap<String, Object>(vars);
 390             vars2.put("csrf", getCSRFToken());
 391             vars2.put("csrf_name", getCsrfFieldName());
 392             vars2.put("spkacChallenge", spkacChallenge);
 393             tIni.output(out, l, vars2);
 394             return;
 395         } else {
 396             super.output(out, l, vars);
 397         }
 398     }
 399
 400     @Override
 401     protected void outputContent(PrintWriter out, Language l, Map<String, Object> vars) {
 402         HashMap<String, Object> vars2 = new HashMap<String, Object>(vars);
 403         vars2.put("CCA", "<a href='/policy/CAcertCommunityAgreement.html'>CCA</a>");
 404
 405         StringBuffer content = new StringBuffer();
 406         for (SubjectAlternateName SAN : SANs) {
 407             content.append(SAN.getType().toString().toLowerCase());
 408             content.append(':');
 409             content.append(SAN.getName());
 410             content.append('\n');
 411         }
 412
 413         vars2.put("CN", CN);
 414         vars2.put("validity", issueDate);
 415         vars2.put("emails", content.toString());
 416         vars2.put("hashs", new HashAlgorithms(selectedDigest));
 417         vars2.put("profiles", new IterableDataset() {
 418
 419             int i = 1;
 420
 421             @Override
 422             public boolean next(Language l, Map<String, Object> vars) {
 423                 CertificateProfile cp = CertificateProfile.getById(i++);
 424                 if (cp == null) {
 425                     return false;
 426                 }
 427                 if (cp.getId() == profile.getId()) {
 428                     vars.put("selected", " selected");
 429                 } else {
 430                     vars.put("selected", "");
 431                 }
 432                 vars.put("key", cp.getKeyName());
 433                 vars.put("name", cp.getVisibleName());
 434                 return true;
 435             }
 436         });
 437         t.output(out, l, vars2);
 438     }
 439 }