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.util.Base64;
  11 import java.util.HashMap;
  12 import java.util.Iterator;
  13 import java.util.LinkedHashSet;
  14 import java.util.List;
  15 import java.util.Map;
  16 import java.util.Set;
  17 import java.util.TreeSet;
  18
  19 import javax.servlet.http.HttpServletRequest;
  20
  21 import org.cacert.gigi.GigiApiException;
  22 import org.cacert.gigi.crypto.SPKAC;
  23 import org.cacert.gigi.dbObjects.Certificate;
  24 import org.cacert.gigi.dbObjects.Certificate.CSRType;
  25 import org.cacert.gigi.dbObjects.Certificate.SANType;
  26 import org.cacert.gigi.dbObjects.Certificate.SubjectAlternateName;
  27 import org.cacert.gigi.dbObjects.CertificateProfile;
  28 import org.cacert.gigi.dbObjects.Digest;
  29 import org.cacert.gigi.dbObjects.Organisation;
  30 import org.cacert.gigi.dbObjects.User;
  31 import org.cacert.gigi.localisation.Language;
  32 import org.cacert.gigi.output.CertificateValiditySelector;
  33 import org.cacert.gigi.output.Form;
  34 import org.cacert.gigi.output.template.HashAlgorithms;
  35 import org.cacert.gigi.output.template.IterableDataset;
  36 import org.cacert.gigi.output.template.Template;
  37 import org.cacert.gigi.pages.LoginPage;
  38 import org.cacert.gigi.pages.Page;
  39 import org.cacert.gigi.util.PEM;
  40 import org.cacert.gigi.util.RandomToken;
  41
  42 import sun.security.pkcs.PKCS9Attribute;
  43 import sun.security.pkcs10.PKCS10;
  44 import sun.security.pkcs10.PKCS10Attribute;
  45 import sun.security.pkcs10.PKCS10Attributes;
  46 import sun.security.util.DerInputStream;
  47 import sun.security.util.DerValue;
  48 import sun.security.util.ObjectIdentifier;
  49 import sun.security.x509.AVA;
  50 import sun.security.x509.AlgorithmId;
  51 import sun.security.x509.CertificateExtensions;
  52 import sun.security.x509.DNSName;
  53 import sun.security.x509.ExtendedKeyUsageExtension;
  54 import sun.security.x509.Extension;
  55 import sun.security.x509.GeneralName;
  56 import sun.security.x509.GeneralNameInterface;
  57 import sun.security.x509.GeneralNames;
  58 import sun.security.x509.PKIXExtensions;
  59 import sun.security.x509.RDN;
  60 import sun.security.x509.RFC822Name;
  61 import sun.security.x509.SubjectAlternativeNameExtension;
  62 import sun.security.x509.X500Name;
  63
  64 /**
  65  * This class represents a form that is used for issuing certificates. This
  66  * class uses "sun.security" and therefore needs "-XDignore.symbol.file"
  67  */
  68 public class CertificateIssueForm extends Form {
  69
  70     public static final String DEFAULT_CN = "CAcert WoT User";
  71
  72     private final static Template t = new Template(CertificateIssueForm.class.getResource("CertificateIssueForm.templ"));
  73
  74     private final static Template tIni = new Template(CertificateAdd.class.getResource("RequestCertificate.templ"));
  75
  76     public static final ObjectIdentifier OID_KEY_USAGE_SSL_SERVER = ObjectIdentifier.newInternal(new int[] {
  77             1, 3, 6, 1, 5, 5, 7, 3, 1
  78     });
  79
  80     public static final ObjectIdentifier OID_KEY_USAGE_SSL_CLIENT = ObjectIdentifier.newInternal(new int[] {
  81             1, 3, 6, 1, 5, 5, 7, 3, 2
  82     });
  83
  84     public static final ObjectIdentifier OID_KEY_USAGE_CODESIGN = ObjectIdentifier.newInternal(new int[] {
  85             1, 3, 6, 1, 5, 5, 7, 3, 3
  86     });
  87
  88     public static final ObjectIdentifier OID_KEY_USAGE_EMAIL_PROTECTION = ObjectIdentifier.newInternal(new int[] {
  89             1, 3, 6, 1, 5, 5, 7, 3, 4
  90     });
  91
  92     public static final ObjectIdentifier OID_KEY_USAGE_TIMESTAMP = ObjectIdentifier.newInternal(new int[] {
  93             1, 3, 6, 1, 5, 5, 7, 3, 8
  94     });
  95
  96     public static final ObjectIdentifier OID_KEY_USAGE_OCSP = ObjectIdentifier.newInternal(new int[] {
  97             1, 3, 6, 1, 5, 5, 7, 3, 9
  98     });
  99
 100     private User u;
 101
 102     private CSRType csrType;
 103
 104     private String csr;
 105
 106     private String spkacChallenge;
 107
 108     public String CN = DEFAULT_CN;
 109
 110     private Set<SubjectAlternateName> SANs = new LinkedHashSet<>();
 111
 112     private Digest selectedDigest = Digest.getDefault();
 113
 114     CertificateValiditySelector issueDate = new CertificateValiditySelector();
 115
 116     private boolean login;
 117
 118     private CertificateProfile profile = CertificateProfile.getById(1);
 119
 120     private String ou = "";
 121
 122     private Organisation org = null;
 123
 124     public CertificateIssueForm(HttpServletRequest hsr) {
 125         super(hsr);
 126         u = Page.getUser(hsr);
 127         spkacChallenge = RandomToken.generateToken(16);
 128     }
 129
 130     private Certificate result;
 131
 132     public Certificate getResult() {
 133         return result;
 134     }
 135
 136     @Override
 137     public boolean submit(PrintWriter out, HttpServletRequest req) {
 138         String csr = req.getParameter("CSR");
 139         String spkac = req.getParameter("SPKAC");
 140         try {
 141             try {
 142                 if (csr != null) {
 143                     byte[] data = PEM.decode("(NEW )?CERTIFICATE REQUEST", csr);
 144                     PKCS10 parsed = new PKCS10(data);
 145                     PKCS10Attributes atts = parsed.getAttributes();
 146
 147                     for (PKCS10Attribute b : atts.getAttributes()) {
 148
 149                         if ( !b.getAttributeId().equals((Object) PKCS9Attribute.EXTENSION_REQUEST_OID)) {
 150                             // unknown attrib
 151                             continue;
 152                         }
 153
 154                         for (RDN r : parsed.getSubjectName().rdns()) {
 155                             for (AVA a : r.avas()) {
 156                                 if (a.getObjectIdentifier().equals((Object) PKCS9Attribute.EMAIL_ADDRESS_OID)) {
 157                                     SANs.add(new SubjectAlternateName(SANType.EMAIL, a.getValueString()));
 158                                 } else if (a.getObjectIdentifier().equals((Object) X500Name.commonName_oid)) {
 159                                     String value = a.getValueString();
 160                                     if (value.contains(".") && !value.contains(" ")) {
 161                                         SANs.add(new SubjectAlternateName(SANType.DNS, value));
 162                                     } else {
 163                                         CN = value;
 164                                     }
 165                                 } else if (a.getObjectIdentifier().equals((Object) PKIXExtensions.SubjectAlternativeName_Id)) {
 166                                     // parse invalid SANs
 167                                 }
 168                             }
 169                         }
 170
 171                         for (Extension c : ((CertificateExtensions) b.getAttributeValue()).getAllExtensions()) {
 172                             if (c instanceof SubjectAlternativeNameExtension) {
 173
 174                                 SubjectAlternativeNameExtension san = (SubjectAlternativeNameExtension) c;
 175                                 GeneralNames obj = san.get(SubjectAlternativeNameExtension.SUBJECT_NAME);
 176                                 for (int i = 0; i < obj.size(); i++) {
 177                                     GeneralName generalName = obj.get(i);
 178                                     GeneralNameInterface peeled = generalName.getName();
 179                                     if (peeled instanceof DNSName) {
 180                                         SANs.add(new SubjectAlternateName(SANType.DNS, ((DNSName) peeled).getName()));
 181                                     } else if (peeled instanceof RFC822Name) {
 182                                         SANs.add(new SubjectAlternateName(SANType.EMAIL, ((RFC822Name) peeled).getName()));
 183                                     }
 184                                 }
 185                             } else if (c instanceof ExtendedKeyUsageExtension) {
 186                                 ExtendedKeyUsageExtension ekue = (ExtendedKeyUsageExtension) c;
 187                                 for (String s : ekue.getExtendedKeyUsage()) {
 188                                     if (s.equals(OID_KEY_USAGE_SSL_SERVER.toString())) {
 189                                         // server
 190                                         profile = CertificateProfile.getByName("server");
 191                                     } else if (s.equals(OID_KEY_USAGE_SSL_CLIENT.toString())) {
 192                                         // client
 193                                         profile = CertificateProfile.getByName("client");
 194                                     } else if (s.equals(OID_KEY_USAGE_CODESIGN.toString())) {
 195                                         // code sign
 196                                     } else if (s.equals(OID_KEY_USAGE_EMAIL_PROTECTION.toString())) {
 197                                         // emailProtection
 198                                         profile = CertificateProfile.getByName("mail");
 199                                     } else if (s.equals(OID_KEY_USAGE_TIMESTAMP.toString())) {
 200                                         // timestamp
 201                                     } else if (s.equals(OID_KEY_USAGE_OCSP.toString())) {
 202                                         // OCSP
 203                                     }
 204                                 }
 205                             } else {
 206                                 // Unknown requested extension
 207                             }
 208                         }
 209
 210                     }
 211                     out.println(parsed.getSubjectName().getCommonName());
 212                     out.println(parsed.getSubjectName().getCountry());
 213
 214                     out.println("CSR DN: " + parsed.getSubjectName() + "<br/>");
 215                     PublicKey pk = parsed.getSubjectPublicKeyInfo();
 216                     checkKeyStrength(pk, out);
 217                     String sign = getSignatureAlgorithm(data);
 218                     guessDigest(sign);
 219
 220                     out.println("<br/>digest: " + sign + "<br/>");
 221
 222                     this.csr = csr;
 223                     this.csrType = CSRType.CSR;
 224                 } else if (spkac != null) {
 225                     String cleanedSPKAC = spkac.replaceAll("[\r\n]", "");
 226                     byte[] data = Base64.getDecoder().decode(cleanedSPKAC);
 227                     SPKAC parsed = new SPKAC(data);
 228                     if ( !parsed.getChallenge().equals(spkacChallenge)) {
 229                         throw new GigiApiException("Challenge mismatch");
 230                     }
 231                     checkKeyStrength(parsed.getPubkey(), out);
 232                     String sign = getSignatureAlgorithm(data);
 233                     guessDigest(sign);
 234                     out.println("<br/>digest: " + sign + "<br/>");
 235
 236                     // spkacChallenge
 237                     this.csr = "SPKAC=" + cleanedSPKAC;
 238                     this.csrType = CSRType.SPKAC;
 239
 240                 } else {
 241                     login = "1".equals(req.getParameter("login"));
 242                     issueDate.update(req);
 243                     CN = req.getParameter("CN");
 244                     String hashAlg = req.getParameter("hash_alg");
 245                     if (hashAlg != null) {
 246                         selectedDigest = Digest.valueOf(hashAlg);
 247                     }
 248                     profile = CertificateProfile.getByName(req.getParameter("profile"));
 249                     String newOrgStr = req.getParameter("org");
 250                     if (newOrgStr != null) {
 251                         Organisation neworg = Organisation.getById(Integer.parseInt(newOrgStr));
 252                         if (neworg == null || u.getOrganisations().contains(neworg)) {
 253                             org = neworg;
 254                         } else {
 255                             outputError(out, req, "Selected Organisation is not part of your account.");
 256                         }
 257                     }
 258                     ou = req.getParameter("OU");
 259                     if ( !u.canIssue(profile)) {
 260                         profile = CertificateProfile.getById(1);
 261                         outputError(out, req, "Certificate Profile is invalid.");
 262                         return false;
 263                     }
 264
 265                     String pDNS = null;
 266                     String pMail = null;
 267                     Set<SubjectAlternateName> filteredSANs = new LinkedHashSet<>();
 268                     boolean server = profile.getKeyName().equals("server");
 269                     for (SubjectAlternateName san : parseSANBox(req.getParameter("SANs"))) {
 270                         if (san.getType() == SANType.DNS) {
 271                             if (u.isValidDomain(san.getName()) && server) {
 272                                 if (pDNS == null) {
 273                                     pDNS = san.getName();
 274                                 }
 275                                 filteredSANs.add(san);
 276                                 continue;
 277                             }
 278                         } else if (san.getType() == SANType.EMAIL) {
 279                             if (u.isValidEmail(san.getName()) && !server) {
 280                                 if (pMail == null) {
 281                                     pMail = san.getName();
 282                                 }
 283                                 filteredSANs.add(san);
 284                                 continue;
 285                             }
 286                         }
 287                         outputError(out, req, "The requested Subject alternate name \"%s\" has been removed.",//
 288                                 san.getType().toString().toLowerCase() + ":" + san.getName());
 289                     }
 290                     SANs = filteredSANs;
 291                     if ( !u.isValidName(CN) && !server && !CN.equals(DEFAULT_CN)) {
 292                         CN = DEFAULT_CN;
 293                         outputError(out, req, "The real name entered cannot be verified with your account.");
 294                     }
 295
 296                     HashMap<String, String> subject = new HashMap<>();
 297                     if (server && pDNS != null) {
 298                         subject.put("CN", pDNS);
 299                         if (pMail != null) {
 300                             outputError(out, req, "No email is included in this certificate.");
 301                         }
 302                         if (CN.equals("")) {
 303                             CN = "";
 304                             outputError(out, req, "No real name is included in this certificate.");
 305                         }
 306                     } else {
 307                         subject.put("CN", CN);
 308                         if (pMail != null) {
 309                             subject.put("EMAIL", pMail);
 310                         }
 311                     }
 312                     if (org != null) {
 313                         subject.put("O", org.getName());
 314                         subject.put("C", org.getState());
 315                         subject.put("ST", org.getProvince());
 316                         subject.put("L", org.getCity());
 317                         subject.put("OU", ou);
 318                     }
 319                     if (req.getParameter("CCA") == null) {
 320                         outputError(out, req, "You need to accept the CCA.");
 321                     }
 322                     if (isFailed(out)) {
 323                         return false;
 324                     }
 325
 326                     result = new Certificate(LoginPage.getUser(req), subject, selectedDigest.toString(), //
 327                             this.csr, this.csrType, profile, SANs.toArray(new SubjectAlternateName[SANs.size()]));
 328                     result.issue(issueDate.getFrom(), issueDate.getTo()).waitFor(60000);
 329                     return true;
 330                 }
 331             } catch (IOException e) {
 332                 e.printStackTrace();
 333             } catch (IllegalArgumentException e) {
 334                 e.printStackTrace();
 335                 throw new GigiApiException("Certificate Request format is invalid.");
 336             } catch (GeneralSecurityException e) {
 337                 e.printStackTrace();
 338                 throw new GigiApiException("Certificate Request format is invalid.");
 339             } catch (InterruptedException e) {
 340                 e.printStackTrace();
 341             }
 342         } catch (GigiApiException e) {
 343             e.format(out, Page.getLanguage(req));
 344         }
 345         return false;
 346     }
 347
 348     private void guessDigest(String sign) {
 349         if (sign.toLowerCase().startsWith("sha512")) {
 350             selectedDigest = Digest.SHA512;
 351         } else if (sign.toLowerCase().startsWith("sha384")) {
 352             selectedDigest = Digest.SHA384;
 353         }
 354     }
 355
 356     private TreeSet<SubjectAlternateName> parseSANBox(String SANs) {
 357         String[] SANparts = SANs.split("[\r\n]+|, *");
 358         TreeSet<SubjectAlternateName> parsedNames = new TreeSet<>();
 359         for (String SANline : SANparts) {
 360             String[] parts = SANline.split(":", 2);
 361             if (parts.length == 1) {
 362                 if (parts[0].trim().equals("")) {
 363                     continue;
 364                 }
 365                 if (parts[0].contains("@")) {
 366                     parsedNames.add(new SubjectAlternateName(SANType.EMAIL, parts[0]));
 367                 } else {
 368                     parsedNames.add(new SubjectAlternateName(SANType.DNS, parts[0]));
 369                 }
 370                 continue;
 371             }
 372             try {
 373                 SANType t = Certificate.SANType.valueOf(parts[0].toUpperCase());
 374                 if (t == null) {
 375                     continue;
 376                 }
 377                 parsedNames.add(new SubjectAlternateName(t, parts[1]));
 378             } catch (IllegalArgumentException e) {
 379                 // invalid enum type
 380                 continue;
 381             }
 382         }
 383         return parsedNames;
 384     }
 385
 386     private void checkKeyStrength(PublicKey pk, PrintWriter out) {
 387         out.println("Type: " + pk.getAlgorithm() + "<br/>");
 388         if (pk instanceof RSAPublicKey) {
 389             out.println("Exponent: " + ((RSAPublicKey) pk).getPublicExponent() + "<br/>");
 390             out.println("Length: " + ((RSAPublicKey) pk).getModulus().bitLength());
 391         } else if (pk instanceof DSAPublicKey) {
 392             DSAPublicKey dpk = (DSAPublicKey) pk;
 393             out.println("Length: " + dpk.getY().bitLength() + "<br/>");
 394             out.println(dpk.getParams());
 395         } else if (pk instanceof ECPublicKey) {
 396             ECPublicKey epk = (ECPublicKey) pk;
 397             out.println("Length-x: " + epk.getW().getAffineX().bitLength() + "<br/>");
 398             out.println("Length-y: " + epk.getW().getAffineY().bitLength() + "<br/>");
 399             out.println(epk.getParams().getCurve());
 400         }
 401     }
 402
 403     private static String getSignatureAlgorithm(byte[] data) throws IOException {
 404         DerInputStream in = new DerInputStream(data);
 405         DerValue[] seq = in.getSequence(3);
 406         return AlgorithmId.parse(seq[1]).getName();
 407     }
 408
 409     @Override
 410     public void output(PrintWriter out, Language l, Map<String, Object> vars) {
 411         if (csr == null) {
 412             HashMap<String, Object> vars2 = new HashMap<String, Object>(vars);
 413             vars2.put("csrf", getCSRFToken());
 414             vars2.put("csrf_name", getCsrfFieldName());
 415             vars2.put("spkacChallenge", spkacChallenge);
 416             tIni.output(out, l, vars2);
 417             return;
 418         } else {
 419             super.output(out, l, vars);
 420         }
 421     }
 422
 423     @Override
 424     protected void outputContent(PrintWriter out, Language l, Map<String, Object> vars) {
 425         HashMap<String, Object> vars2 = new HashMap<String, Object>(vars);
 426         vars2.put("CCA", "<a href='/policy/CAcertCommunityAgreement.html'>CCA</a>");
 427
 428         StringBuffer content = new StringBuffer();
 429         for (SubjectAlternateName SAN : SANs) {
 430             content.append(SAN.getType().toString().toLowerCase());
 431             content.append(':');
 432             content.append(SAN.getName());
 433             content.append('\n');
 434         }
 435
 436         vars2.put("CN", CN);
 437         vars2.put("department", ou);
 438         vars2.put("validity", issueDate);
 439         vars2.put("emails", content.toString());
 440         vars2.put("hashs", new HashAlgorithms(selectedDigest));
 441         vars2.put("profiles", new IterableDataset() {
 442
 443             int i = 1;
 444
 445             @Override
 446             public boolean next(Language l, Map<String, Object> vars) {
 447                 CertificateProfile cp;
 448                 do {
 449                     cp = CertificateProfile.getById(i++);
 450                     if (cp == null) {
 451                         return false;
 452                     }
 453                 } while ( !u.canIssue(cp));
 454
 455                 if (cp.getId() == profile.getId()) {
 456                     vars.put("selected", " selected");
 457                 } else {
 458                     vars.put("selected", "");
 459                 }
 460                 vars.put("key", cp.getKeyName());
 461                 vars.put("name", cp.getVisibleName());
 462                 return true;
 463             }
 464         });
 465         final List<Organisation> orgs = u.getOrganisations();
 466         vars2.put("orga", orgs.size() == 0 ? null : new IterableDataset() {
 467
 468             Iterator<Organisation> iter = orgs.iterator();
 469
 470             @Override
 471             public boolean next(Language l, Map<String, Object> vars) {
 472                 if ( !iter.hasNext()) {
 473                     return false;
 474                 }
 475                 Organisation orga = iter.next();
 476                 vars.put("key", orga.getId());
 477                 vars.put("name", orga.getName());
 478                 if (orga == org) {
 479                     vars.put("selected", " selected");
 480                 } else {
 481                     vars.put("selected", "");
 482                 }
 483                 return true;
 484             }
 485         });
 486
 487         t.output(out, l, vars2);
 488     }
 489 }