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     public static String escapeAVA(String value) {
 137
 138         return value.replace("\\", "\\\\").replace("/", "\\/");
 139     }
 140
 141     @Override
 142     public boolean submit(PrintWriter out, HttpServletRequest req) {
 143         String csr = req.getParameter("CSR");
 144         String spkac = req.getParameter("SPKAC");
 145         try {
 146             try {
 147                 if (csr != null) {
 148                     byte[] data = PEM.decode("(NEW )?CERTIFICATE REQUEST", csr);
 149                     PKCS10 parsed = new PKCS10(data);
 150                     PKCS10Attributes atts = parsed.getAttributes();
 151
 152                     for (PKCS10Attribute b : atts.getAttributes()) {
 153
 154                         if ( !b.getAttributeId().equals((Object) PKCS9Attribute.EXTENSION_REQUEST_OID)) {
 155                             // unknown attrib
 156                             continue;
 157                         }
 158
 159                         for (RDN r : parsed.getSubjectName().rdns()) {
 160                             for (AVA a : r.avas()) {
 161                                 if (a.getObjectIdentifier().equals((Object) PKCS9Attribute.EMAIL_ADDRESS_OID)) {
 162                                     SANs.add(new SubjectAlternateName(SANType.EMAIL, a.getValueString()));
 163                                 } else if (a.getObjectIdentifier().equals((Object) X500Name.commonName_oid)) {
 164                                     String value = a.getValueString();
 165                                     if (value.contains(".") && !value.contains(" ")) {
 166                                         SANs.add(new SubjectAlternateName(SANType.DNS, value));
 167                                     } else {
 168                                         CN = value;
 169                                     }
 170                                 } else if (a.getObjectIdentifier().equals((Object) PKIXExtensions.SubjectAlternativeName_Id)) {
 171                                     // parse invalid SANs
 172                                 }
 173                             }
 174                         }
 175
 176                         for (Extension c : ((CertificateExtensions) b.getAttributeValue()).getAllExtensions()) {
 177                             if (c instanceof SubjectAlternativeNameExtension) {
 178
 179                                 SubjectAlternativeNameExtension san = (SubjectAlternativeNameExtension) c;
 180                                 GeneralNames obj = san.get(SubjectAlternativeNameExtension.SUBJECT_NAME);
 181                                 for (int i = 0; i < obj.size(); i++) {
 182                                     GeneralName generalName = obj.get(i);
 183                                     GeneralNameInterface peeled = generalName.getName();
 184                                     if (peeled instanceof DNSName) {
 185                                         SANs.add(new SubjectAlternateName(SANType.DNS, ((DNSName) peeled).getName()));
 186                                     } else if (peeled instanceof RFC822Name) {
 187                                         SANs.add(new SubjectAlternateName(SANType.EMAIL, ((RFC822Name) peeled).getName()));
 188                                     }
 189                                 }
 190                             } else if (c instanceof ExtendedKeyUsageExtension) {
 191                                 ExtendedKeyUsageExtension ekue = (ExtendedKeyUsageExtension) c;
 192                                 for (String s : ekue.getExtendedKeyUsage()) {
 193                                     if (s.equals(OID_KEY_USAGE_SSL_SERVER.toString())) {
 194                                         // server
 195                                         profile = CertificateProfile.getByName("server");
 196                                     } else if (s.equals(OID_KEY_USAGE_SSL_CLIENT.toString())) {
 197                                         // client
 198                                         profile = CertificateProfile.getByName("client");
 199                                     } else if (s.equals(OID_KEY_USAGE_CODESIGN.toString())) {
 200                                         // code sign
 201                                     } else if (s.equals(OID_KEY_USAGE_EMAIL_PROTECTION.toString())) {
 202                                         // emailProtection
 203                                         profile = CertificateProfile.getByName("mail");
 204                                     } else if (s.equals(OID_KEY_USAGE_TIMESTAMP.toString())) {
 205                                         // timestamp
 206                                     } else if (s.equals(OID_KEY_USAGE_OCSP.toString())) {
 207                                         // OCSP
 208                                     }
 209                                 }
 210                             } else {
 211                                 // Unknown requested extension
 212                             }
 213                         }
 214
 215                     }
 216                     out.println(parsed.getSubjectName().getCommonName());
 217                     out.println(parsed.getSubjectName().getCountry());
 218
 219                     out.println("CSR DN: " + parsed.getSubjectName() + "<br/>");
 220                     PublicKey pk = parsed.getSubjectPublicKeyInfo();
 221                     checkKeyStrength(pk, out);
 222                     String sign = getSignatureAlgorithm(data);
 223                     guessDigest(sign);
 224
 225                     out.println("<br/>digest: " + sign + "<br/>");
 226
 227                     this.csr = csr;
 228                     this.csrType = CSRType.CSR;
 229                 } else if (spkac != null) {
 230                     String cleanedSPKAC = spkac.replaceAll("[\r\n]", "");
 231                     byte[] data = Base64.getDecoder().decode(cleanedSPKAC);
 232                     SPKAC parsed = new SPKAC(data);
 233                     if ( !parsed.getChallenge().equals(spkacChallenge)) {
 234                         throw new GigiApiException("Challenge mismatch");
 235                     }
 236                     checkKeyStrength(parsed.getPubkey(), out);
 237                     String sign = getSignatureAlgorithm(data);
 238                     guessDigest(sign);
 239                     out.println("<br/>digest: " + sign + "<br/>");
 240
 241                     // spkacChallenge
 242                     this.csr = "SPKAC=" + cleanedSPKAC;
 243                     this.csrType = CSRType.SPKAC;
 244
 245                 } else {
 246                     login = "1".equals(req.getParameter("login"));
 247                     issueDate.update(req);
 248                     CN = req.getParameter("CN");
 249                     String hashAlg = req.getParameter("hash_alg");
 250                     if (hashAlg != null) {
 251                         selectedDigest = Digest.valueOf(hashAlg);
 252                     }
 253                     profile = CertificateProfile.getByName(req.getParameter("profile"));
 254                     Organisation neworg = Organisation.getById(Integer.parseInt(req.getParameter("org")));
 255                     if (neworg == null || u.getOrganisations().contains(neworg)) {
 256                         org = neworg;
 257                     } else {
 258                         outputError(out, req, "Selected Organisation is not part of your account.");
 259                     }
 260                     ou = req.getParameter("OU");
 261                     if ( !u.canIssue(profile)) {
 262                         profile = CertificateProfile.getById(1);
 263                         outputError(out, req, "Certificate Profile is invalid.");
 264                         return false;
 265                     }
 266
 267                     String pDNS = null;
 268                     String pMail = null;
 269                     Set<SubjectAlternateName> filteredSANs = new LinkedHashSet<>();
 270                     boolean server = profile.getKeyName().equals("server");
 271                     for (SubjectAlternateName san : parseSANBox(req.getParameter("SANs"))) {
 272                         if (san.getType() == SANType.DNS) {
 273                             if (u.isValidDomain(san.getName()) && server) {
 274                                 if (pDNS == null) {
 275                                     pDNS = san.getName();
 276                                 }
 277                                 filteredSANs.add(san);
 278                                 continue;
 279                             }
 280                         } else if (san.getType() == SANType.EMAIL) {
 281                             if (u.isValidEmail(san.getName()) && !server) {
 282                                 if (pMail == null) {
 283                                     pMail = san.getName();
 284                                 }
 285                                 filteredSANs.add(san);
 286                                 continue;
 287                             }
 288                         }
 289                         outputError(out, req, "The requested Subject alternate name \"%s\" has been removed.",//
 290                                 san.getType().toString().toLowerCase() + ":" + san.getName());
 291                     }
 292                     SANs = filteredSANs;
 293                     if ( !u.isValidName(CN) && !server && !CN.equals(DEFAULT_CN)) {
 294                         CN = DEFAULT_CN;
 295                         outputError(out, req, "The real name entered cannot be verified with your account.");
 296                     }
 297
 298                     final StringBuffer subject = new StringBuffer();
 299                     if (server && pDNS != null) {
 300                         subject.append("/commonName=");
 301                         subject.append(escapeAVA(pDNS));
 302                         if (pMail != null) {
 303                             outputError(out, req, "No email is included in this certificate.");
 304                         }
 305                         if (CN.equals("")) {
 306                             CN = "";
 307                             outputError(out, req, "No real name is included in this certificate.");
 308                         }
 309                     } else {
 310                         subject.append("/commonName=");
 311                         subject.append(escapeAVA(CN));
 312                         if (pMail != null) {
 313                             subject.append("/emailAddress=");
 314                             subject.append(escapeAVA(pMail));
 315                         }
 316                     }
 317                     if (org != null) {
 318                         subject.append("/O=");
 319                         subject.append(escapeAVA(org.getName()));
 320                         subject.append("/C=");
 321                         subject.append(escapeAVA(org.getState()));
 322                         subject.append("/ST=");
 323                         subject.append(escapeAVA(org.getProvince()));
 324                         subject.append("/L=");
 325                         subject.append(escapeAVA(org.getCity()));
 326                         subject.append("/OU=");
 327                         subject.append(escapeAVA(ou));
 328                     }
 329                     if (req.getParameter("CCA") == null) {
 330                         outputError(out, req, "You need to accept the CCA.");
 331                     }
 332                     if (isFailed(out)) {
 333                         return false;
 334                     }
 335
 336                     result = new Certificate(LoginPage.getUser(req), subject.toString(), selectedDigest.toString(), //
 337                             this.csr, this.csrType, profile, SANs.toArray(new SubjectAlternateName[SANs.size()]));
 338                     result.issue(issueDate.getFrom(), issueDate.getTo()).waitFor(60000);
 339                     return true;
 340                 }
 341             } catch (IOException e) {
 342                 e.printStackTrace();
 343             } catch (IllegalArgumentException e) {
 344                 e.printStackTrace();
 345                 throw new GigiApiException("Certificate Request format is invalid.");
 346             } catch (GeneralSecurityException e) {
 347                 e.printStackTrace();
 348                 throw new GigiApiException("Certificate Request format is invalid.");
 349             } catch (InterruptedException e) {
 350                 e.printStackTrace();
 351             }
 352         } catch (GigiApiException e) {
 353             e.format(out, Page.getLanguage(req));
 354         }
 355         return false;
 356     }
 357
 358     private void guessDigest(String sign) {
 359         if (sign.toLowerCase().startsWith("sha512")) {
 360             selectedDigest = Digest.SHA512;
 361         } else if (sign.toLowerCase().startsWith("sha384")) {
 362             selectedDigest = Digest.SHA384;
 363         }
 364     }
 365
 366     private TreeSet<SubjectAlternateName> parseSANBox(String SANs) {
 367         String[] SANparts = SANs.split("[\r\n]+|, *");
 368         TreeSet<SubjectAlternateName> parsedNames = new TreeSet<>();
 369         for (String SANline : SANparts) {
 370             String[] parts = SANline.split(":", 2);
 371             if (parts.length == 1) {
 372                 if (parts[0].trim().equals("")) {
 373                     continue;
 374                 }
 375                 if (parts[0].contains("@")) {
 376                     parsedNames.add(new SubjectAlternateName(SANType.EMAIL, parts[0]));
 377                 } else {
 378                     parsedNames.add(new SubjectAlternateName(SANType.DNS, parts[0]));
 379                 }
 380                 continue;
 381             }
 382             try {
 383                 SANType t = Certificate.SANType.valueOf(parts[0].toUpperCase());
 384                 if (t == null) {
 385                     continue;
 386                 }
 387                 parsedNames.add(new SubjectAlternateName(t, parts[1]));
 388             } catch (IllegalArgumentException e) {
 389                 // invalid enum type
 390                 continue;
 391             }
 392         }
 393         return parsedNames;
 394     }
 395
 396     private void checkKeyStrength(PublicKey pk, PrintWriter out) {
 397         out.println("Type: " + pk.getAlgorithm() + "<br/>");
 398         if (pk instanceof RSAPublicKey) {
 399             out.println("Exponent: " + ((RSAPublicKey) pk).getPublicExponent() + "<br/>");
 400             out.println("Length: " + ((RSAPublicKey) pk).getModulus().bitLength());
 401         } else if (pk instanceof DSAPublicKey) {
 402             DSAPublicKey dpk = (DSAPublicKey) pk;
 403             out.println("Length: " + dpk.getY().bitLength() + "<br/>");
 404             out.println(dpk.getParams());
 405         } else if (pk instanceof ECPublicKey) {
 406             ECPublicKey epk = (ECPublicKey) pk;
 407             out.println("Length-x: " + epk.getW().getAffineX().bitLength() + "<br/>");
 408             out.println("Length-y: " + epk.getW().getAffineY().bitLength() + "<br/>");
 409             out.println(epk.getParams().getCurve());
 410         }
 411     }
 412
 413     private static String getSignatureAlgorithm(byte[] data) throws IOException {
 414         DerInputStream in = new DerInputStream(data);
 415         DerValue[] seq = in.getSequence(3);
 416         return AlgorithmId.parse(seq[1]).getName();
 417     }
 418
 419     @Override
 420     public void output(PrintWriter out, Language l, Map<String, Object> vars) {
 421         if (csr == null) {
 422             HashMap<String, Object> vars2 = new HashMap<String, Object>(vars);
 423             vars2.put("csrf", getCSRFToken());
 424             vars2.put("csrf_name", getCsrfFieldName());
 425             vars2.put("spkacChallenge", spkacChallenge);
 426             tIni.output(out, l, vars2);
 427             return;
 428         } else {
 429             super.output(out, l, vars);
 430         }
 431     }
 432
 433     @Override
 434     protected void outputContent(PrintWriter out, Language l, Map<String, Object> vars) {
 435         HashMap<String, Object> vars2 = new HashMap<String, Object>(vars);
 436         vars2.put("CCA", "<a href='/policy/CAcertCommunityAgreement.html'>CCA</a>");
 437
 438         StringBuffer content = new StringBuffer();
 439         for (SubjectAlternateName SAN : SANs) {
 440             content.append(SAN.getType().toString().toLowerCase());
 441             content.append(':');
 442             content.append(SAN.getName());
 443             content.append('\n');
 444         }
 445
 446         vars2.put("CN", CN);
 447         vars2.put("department", ou);
 448         vars2.put("validity", issueDate);
 449         vars2.put("emails", content.toString());
 450         vars2.put("hashs", new HashAlgorithms(selectedDigest));
 451         vars2.put("profiles", new IterableDataset() {
 452
 453             int i = 1;
 454
 455             @Override
 456             public boolean next(Language l, Map<String, Object> vars) {
 457                 CertificateProfile cp;
 458                 do {
 459                     cp = CertificateProfile.getById(i++);
 460                     if (cp == null) {
 461                         return false;
 462                     }
 463                 } while ( !u.canIssue(cp));
 464
 465                 if (cp.getId() == profile.getId()) {
 466                     vars.put("selected", " selected");
 467                 } else {
 468                     vars.put("selected", "");
 469                 }
 470                 vars.put("key", cp.getKeyName());
 471                 vars.put("name", cp.getVisibleName());
 472                 return true;
 473             }
 474         });
 475         final List<Organisation> orgs = u.getOrganisations();
 476         vars2.put("orga", orgs.size() == 0 ? null : new IterableDataset() {
 477
 478             Iterator<Organisation> iter = orgs.iterator();
 479
 480             @Override
 481             public boolean next(Language l, Map<String, Object> vars) {
 482                 if ( !iter.hasNext()) {
 483                     return false;
 484                 }
 485                 Organisation orga = iter.next();
 486                 vars.put("key", orga.getId());
 487                 vars.put("name", orga.getName());
 488                 if (orga == org) {
 489                     vars.put("selected", " selected");
 490                 } else {
 491                     vars.put("selected", "");
 492                 }
 493                 return true;
 494             }
 495         });
 496
 497         t.output(out, l, vars2);
 498     }
 499 }