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     public CertificateIssueForm(HttpServletRequest hsr) {
 121         super(hsr);
 122         u = Page.getUser(hsr);
 123         spkacChallenge = RandomToken.generateToken(16);
 124     }
 125
 126     private Certificate result;
 127
 128     public Certificate getResult() {
 129         return result;
 130     }
 131
 132     @Override
 133     public boolean submit(PrintWriter out, HttpServletRequest req) {
 134         String csr = req.getParameter("CSR");
 135         String spkac = req.getParameter("SPKAC");
 136         try {
 137             try {
 138                 if (csr != null) {
 139                     byte[] data = PEM.decode("(NEW )?CERTIFICATE REQUEST", csr);
 140                     PKCS10 parsed = new PKCS10(data);
 141                     PKCS10Attributes atts = parsed.getAttributes();
 142
 143                     for (PKCS10Attribute b : atts.getAttributes()) {
 144
 145                         if ( !b.getAttributeId().equals((Object) PKCS9Attribute.EXTENSION_REQUEST_OID)) {
 146                             // unknown attrib
 147                             continue;
 148                         }
 149
 150                         for (RDN r : parsed.getSubjectName().rdns()) {
 151                             for (AVA a : r.avas()) {
 152                                 if (a.getObjectIdentifier().equals((Object) PKCS9Attribute.EMAIL_ADDRESS_OID)) {
 153                                     SANs.add(new SubjectAlternateName(SANType.EMAIL, a.getValueString()));
 154                                 } else if (a.getObjectIdentifier().equals((Object) X500Name.commonName_oid)) {
 155                                     String value = a.getValueString();
 156                                     if (value.contains(".") && !value.contains(" ")) {
 157                                         SANs.add(new SubjectAlternateName(SANType.DNS, value));
 158                                     } else {
 159                                         CN = value;
 160                                     }
 161                                 } else if (a.getObjectIdentifier().equals((Object) PKIXExtensions.SubjectAlternativeName_Id)) {
 162                                     // parse invalid SANs
 163                                 }
 164                             }
 165                         }
 166
 167                         for (Extension c : ((CertificateExtensions) b.getAttributeValue()).getAllExtensions()) {
 168                             if (c instanceof SubjectAlternativeNameExtension) {
 169
 170                                 SubjectAlternativeNameExtension san = (SubjectAlternativeNameExtension) c;
 171                                 GeneralNames obj = san.get(SubjectAlternativeNameExtension.SUBJECT_NAME);
 172                                 for (int i = 0; i < obj.size(); i++) {
 173                                     GeneralName generalName = obj.get(i);
 174                                     GeneralNameInterface peeled = generalName.getName();
 175                                     if (peeled instanceof DNSName) {
 176                                         SANs.add(new SubjectAlternateName(SANType.DNS, ((DNSName) peeled).getName()));
 177                                     } else if (peeled instanceof RFC822Name) {
 178                                         SANs.add(new SubjectAlternateName(SANType.EMAIL, ((RFC822Name) peeled).getName()));
 179                                     }
 180                                 }
 181                             } else if (c instanceof ExtendedKeyUsageExtension) {
 182                                 ExtendedKeyUsageExtension ekue = (ExtendedKeyUsageExtension) c;
 183                                 for (String s : ekue.getExtendedKeyUsage()) {
 184                                     if (s.equals(OID_KEY_USAGE_SSL_SERVER.toString())) {
 185                                         // server
 186                                         profile = CertificateProfile.getByName("server");
 187                                     } else if (s.equals(OID_KEY_USAGE_SSL_CLIENT.toString())) {
 188                                         // client
 189                                         profile = CertificateProfile.getByName("client");
 190                                     } else if (s.equals(OID_KEY_USAGE_CODESIGN.toString())) {
 191                                         // code sign
 192                                     } else if (s.equals(OID_KEY_USAGE_EMAIL_PROTECTION.toString())) {
 193                                         // emailProtection
 194                                         profile = CertificateProfile.getByName("mail");
 195                                     } else if (s.equals(OID_KEY_USAGE_TIMESTAMP.toString())) {
 196                                         // timestamp
 197                                     } else if (s.equals(OID_KEY_USAGE_OCSP.toString())) {
 198                                         // OCSP
 199                                     }
 200                                 }
 201                             } else {
 202                                 // Unknown requested extension
 203                             }
 204                         }
 205
 206                     }
 207                     out.println(parsed.getSubjectName().getCommonName());
 208                     out.println(parsed.getSubjectName().getCountry());
 209
 210                     out.println("CSR DN: " + parsed.getSubjectName() + "<br/>");
 211                     PublicKey pk = parsed.getSubjectPublicKeyInfo();
 212                     checkKeyStrength(pk, out);
 213                     String sign = getSignatureAlgorithm(data);
 214                     guessDigest(sign);
 215
 216                     out.println("<br/>digest: " + sign + "<br/>");
 217
 218                     this.csr = csr;
 219                     this.csrType = CSRType.CSR;
 220                 } else if (spkac != null) {
 221                     String cleanedSPKAC = spkac.replaceAll("[\r\n]", "");
 222                     byte[] data = Base64.getDecoder().decode(cleanedSPKAC);
 223                     SPKAC parsed = new SPKAC(data);
 224                     if ( !parsed.getChallenge().equals(spkacChallenge)) {
 225                         throw new GigiApiException("Challenge mismatch");
 226                     }
 227                     checkKeyStrength(parsed.getPubkey(), out);
 228                     String sign = getSignatureAlgorithm(data);
 229                     guessDigest(sign);
 230                     out.println("<br/>digest: " + sign + "<br/>");
 231
 232                     // spkacChallenge
 233                     this.csr = "SPKAC=" + cleanedSPKAC;
 234                     this.csrType = CSRType.SPKAC;
 235
 236                 } else {
 237                     login = "1".equals(req.getParameter("login"));
 238                     issueDate.update(req);
 239                     CN = req.getParameter("CN");
 240                     String hashAlg = req.getParameter("hash_alg");
 241                     if (hashAlg != null) {
 242                         selectedDigest = Digest.valueOf(hashAlg);
 243                     }
 244                     profile = CertificateProfile.getByName(req.getParameter("profile"));
 245                     if ( !u.canIssue(profile)) {
 246                         profile = CertificateProfile.getById(1);
 247                         outputError(out, req, "Certificate Profile is invalid.");
 248                         return false;
 249                     }
 250
 251                     String pDNS = null;
 252                     String pMail = null;
 253                     Set<SubjectAlternateName> filteredSANs = new LinkedHashSet<>();
 254                     boolean server = profile.getKeyName().equals("server");
 255                     for (SubjectAlternateName san : parseSANBox(req.getParameter("SANs"))) {
 256                         if (san.getType() == SANType.DNS) {
 257                             if (u.isValidDomain(san.getName()) && server) {
 258                                 if (pDNS == null) {
 259                                     pDNS = san.getName();
 260                                 }
 261                                 filteredSANs.add(san);
 262                                 continue;
 263                             }
 264                         } else if (san.getType() == SANType.EMAIL) {
 265                             if (u.isValidEmail(san.getName()) && !server) {
 266                                 if (pMail == null) {
 267                                     pMail = san.getName();
 268                                 }
 269                                 filteredSANs.add(san);
 270                                 continue;
 271                             }
 272                         }
 273                         outputError(out, req, "The requested Subject alternate name \"%s\" has been removed.",//
 274                                 san.getType().toString().toLowerCase() + ":" + san.getName());
 275                     }
 276                     SANs = filteredSANs;
 277                     if ( !u.isValidName(CN) && !server && !CN.equals(DEFAULT_CN)) {
 278                         CN = DEFAULT_CN;
 279                         outputError(out, req, "The real name entered cannot be verified with your account.");
 280                     }
 281
 282                     final StringBuffer subject = new StringBuffer();
 283                     if (server && pDNS != null) {
 284                         subject.append("/commonName=");
 285                         subject.append(pDNS);
 286                         if (pMail != null) {
 287                             outputError(out, req, "No email is included in this certificate.");
 288                         }
 289                         if (CN.equals("")) {
 290                             CN = "";
 291                             outputError(out, req, "No real name is included in this certificate.");
 292                         }
 293                     } else {
 294                         subject.append("/commonName=");
 295                         subject.append(CN);
 296                         if (pMail != null) {
 297                             subject.append("/emailAddress=");
 298                             subject.append(pMail);
 299                         }
 300                     }
 301                     if (req.getParameter("CCA") == null) {
 302                         outputError(out, req, "You need to accept the CCA.");
 303                     }
 304                     if (isFailed(out)) {
 305                         return false;
 306                     }
 307
 308                     result = new Certificate(LoginPage.getUser(req), subject.toString(), selectedDigest.toString(), //
 309                             this.csr, this.csrType, profile, SANs.toArray(new SubjectAlternateName[SANs.size()]));
 310                     result.issue(issueDate.getFrom(), issueDate.getTo()).waitFor(60000);
 311                     return true;
 312                 }
 313             } catch (IOException e) {
 314                 e.printStackTrace();
 315             } catch (IllegalArgumentException e) {
 316                 e.printStackTrace();
 317                 throw new GigiApiException("Certificate Request format is invalid.");
 318             } catch (GeneralSecurityException e) {
 319                 e.printStackTrace();
 320                 throw new GigiApiException("Certificate Request format is invalid.");
 321             } catch (InterruptedException e) {
 322                 e.printStackTrace();
 323             }
 324         } catch (GigiApiException e) {
 325             e.format(out, Page.getLanguage(req));
 326         }
 327         return false;
 328     }
 329
 330     private void guessDigest(String sign) {
 331         if (sign.toLowerCase().startsWith("sha512")) {
 332             selectedDigest = Digest.SHA512;
 333         } else if (sign.toLowerCase().startsWith("sha384")) {
 334             selectedDigest = Digest.SHA384;
 335         }
 336     }
 337
 338     private TreeSet<SubjectAlternateName> parseSANBox(String SANs) {
 339         String[] SANparts = SANs.split("[\r\n]+|, *");
 340         TreeSet<SubjectAlternateName> parsedNames = new TreeSet<>();
 341         for (String SANline : SANparts) {
 342             String[] parts = SANline.split(":", 2);
 343             if (parts.length == 1) {
 344                 if (parts[0].trim().equals("")) {
 345                     continue;
 346                 }
 347                 if (parts[0].contains("@")) {
 348                     parsedNames.add(new SubjectAlternateName(SANType.EMAIL, parts[0]));
 349                 } else {
 350                     parsedNames.add(new SubjectAlternateName(SANType.DNS, parts[0]));
 351                 }
 352                 continue;
 353             }
 354             try {
 355                 SANType t = Certificate.SANType.valueOf(parts[0].toUpperCase());
 356                 if (t == null) {
 357                     continue;
 358                 }
 359                 parsedNames.add(new SubjectAlternateName(t, parts[1]));
 360             } catch (IllegalArgumentException e) {
 361                 // invalid enum type
 362                 continue;
 363             }
 364         }
 365         return parsedNames;
 366     }
 367
 368     private void checkKeyStrength(PublicKey pk, PrintWriter out) {
 369         out.println("Type: " + pk.getAlgorithm() + "<br/>");
 370         if (pk instanceof RSAPublicKey) {
 371             out.println("Exponent: " + ((RSAPublicKey) pk).getPublicExponent() + "<br/>");
 372             out.println("Length: " + ((RSAPublicKey) pk).getModulus().bitLength());
 373         } else if (pk instanceof DSAPublicKey) {
 374             DSAPublicKey dpk = (DSAPublicKey) pk;
 375             out.println("Length: " + dpk.getY().bitLength() + "<br/>");
 376             out.println(dpk.getParams());
 377         } else if (pk instanceof ECPublicKey) {
 378             ECPublicKey epk = (ECPublicKey) pk;
 379             out.println("Length-x: " + epk.getW().getAffineX().bitLength() + "<br/>");
 380             out.println("Length-y: " + epk.getW().getAffineY().bitLength() + "<br/>");
 381             out.println(epk.getParams().getCurve());
 382         }
 383     }
 384
 385     private static String getSignatureAlgorithm(byte[] data) throws IOException {
 386         DerInputStream in = new DerInputStream(data);
 387         DerValue[] seq = in.getSequence(3);
 388         return AlgorithmId.parse(seq[1]).getName();
 389     }
 390
 391     @Override
 392     public void output(PrintWriter out, Language l, Map<String, Object> vars) {
 393         if (csr == null) {
 394             HashMap<String, Object> vars2 = new HashMap<String, Object>(vars);
 395             vars2.put("csrf", getCSRFToken());
 396             vars2.put("csrf_name", getCsrfFieldName());
 397             vars2.put("spkacChallenge", spkacChallenge);
 398             tIni.output(out, l, vars2);
 399             return;
 400         } else {
 401             super.output(out, l, vars);
 402         }
 403     }
 404
 405     @Override
 406     protected void outputContent(PrintWriter out, Language l, Map<String, Object> vars) {
 407         HashMap<String, Object> vars2 = new HashMap<String, Object>(vars);
 408         vars2.put("CCA", "<a href='/policy/CAcertCommunityAgreement.html'>CCA</a>");
 409
 410         StringBuffer content = new StringBuffer();
 411         for (SubjectAlternateName SAN : SANs) {
 412             content.append(SAN.getType().toString().toLowerCase());
 413             content.append(':');
 414             content.append(SAN.getName());
 415             content.append('\n');
 416         }
 417
 418         vars2.put("CN", CN);
 419         vars2.put("validity", issueDate);
 420         vars2.put("emails", content.toString());
 421         vars2.put("hashs", new HashAlgorithms(selectedDigest));
 422         vars2.put("profiles", new IterableDataset() {
 423
 424             int i = 1;
 425
 426             @Override
 427             public boolean next(Language l, Map<String, Object> vars) {
 428                 CertificateProfile cp;
 429                 do {
 430                     cp = CertificateProfile.getById(i++);
 431                     if (cp == null) {
 432                         return false;
 433                     }
 434                 } while ( !u.canIssue(cp));
 435
 436                 if (cp.getId() == profile.getId()) {
 437                     vars.put("selected", " selected");
 438                 } else {
 439                     vars.put("selected", "");
 440                 }
 441                 vars.put("key", cp.getKeyName());
 442                 vars.put("name", cp.getVisibleName());
 443                 return true;
 444             }
 445         });
 446         final List<Organisation> orgs = u.getOrganisations();
 447         vars2.put("orga", orgs.size() == 0 ? null : new IterableDataset() {
 448
 449             Iterator<Organisation> iter = orgs.iterator();
 450
 451             @Override
 452             public boolean next(Language l, Map<String, Object> vars) {
 453                 if ( !iter.hasNext()) {
 454                     return false;
 455                 }
 456                 Organisation orga = iter.next();
 457                 vars.put("key", orga.getId());
 458                 vars.put("name", orga.getName());
 459                 return true;
 460             }
 461         });
 462
 463         t.output(out, l, vars2);
 464     }
 465 }