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

   1 package org.cacert.gigi.pages.account;
   2
   3 import java.io.IOException;
   4 import java.io.PrintWriter;
   5 import java.security.GeneralSecurityException;
   6 import java.security.PublicKey;
   7 import java.security.interfaces.DSAPublicKey;
   8 import java.security.interfaces.ECPublicKey;
   9 import java.security.interfaces.RSAPublicKey;
  10 import java.sql.SQLException;
  11 import java.util.Base64;
  12 import java.util.HashMap;
  13 import java.util.LinkedHashSet;
  14 import java.util.Map;
  15 import java.util.Set;
  16 import java.util.TreeSet;
  17
  18 import javax.servlet.http.HttpServletRequest;
  19
  20 import org.cacert.gigi.Certificate;
  21 import org.cacert.gigi.Certificate.CSRType;
  22 import org.cacert.gigi.Certificate.SANType;
  23 import org.cacert.gigi.Certificate.SubjectAlternateName;
  24 import org.cacert.gigi.CertificateProfile;
  25 import org.cacert.gigi.Digest;
  26 import org.cacert.gigi.GigiApiException;
  27 import org.cacert.gigi.User;
  28 import org.cacert.gigi.crypto.SPKAC;
  29 import org.cacert.gigi.localisation.Language;
  30 import org.cacert.gigi.output.Form;
  31 import org.cacert.gigi.output.template.HashAlgorithms;
  32 import org.cacert.gigi.output.template.IterableDataset;
  33 import org.cacert.gigi.output.template.Template;
  34 import org.cacert.gigi.pages.LoginPage;
  35 import org.cacert.gigi.pages.Page;
  36 import org.cacert.gigi.util.PEM;
  37 import org.cacert.gigi.util.RandomToken;
  38
  39 import sun.security.pkcs.PKCS9Attribute;
  40 import sun.security.pkcs10.PKCS10;
  41 import sun.security.pkcs10.PKCS10Attribute;
  42 import sun.security.pkcs10.PKCS10Attributes;
  43 import sun.security.util.DerInputStream;
  44 import sun.security.util.DerValue;
  45 import sun.security.x509.AVA;
  46 import sun.security.x509.AlgorithmId;
  47 import sun.security.x509.CertificateExtensions;
  48 import sun.security.x509.DNSName;
  49 import sun.security.x509.ExtendedKeyUsageExtension;
  50 import sun.security.x509.Extension;
  51 import sun.security.x509.GeneralName;
  52 import sun.security.x509.GeneralNameInterface;
  53 import sun.security.x509.GeneralNames;
  54 import sun.security.x509.PKIXExtensions;
  55 import sun.security.x509.RDN;
  56 import sun.security.x509.RFC822Name;
  57 import sun.security.x509.SubjectAlternativeNameExtension;
  58 import sun.security.x509.X500Name;
  59
  60 /**
  61  * This class represents a form that is used for issuing certificates. This
  62  * class uses "sun.security" and therefore needs "-XDignore.symbol.file"
  63  */
  64 public class CertificateIssueForm extends Form {
  65
  66     private static final String DEFAULT_CN = "CAcert WoT User";
  67
  68     private final static Template t = new Template(CertificateIssueForm.class.getResource("CertificateIssueForm.templ"));
  69
  70     private final static Template tIni = new Template(CertificateAdd.class.getResource("RequestCertificate.templ"));
  71
  72     User u;
  73
  74     private CSRType csrType;
  75
  76     String csr;
  77
  78     String spkacChallenge;
  79
  80     public String CN = DEFAULT_CN;
  81
  82     Set<SubjectAlternateName> SANs = new LinkedHashSet<>();
  83
  84     Digest selectedDigest = Digest.getDefault();
  85
  86     boolean login;
  87
  88     CertificateProfile profile = CertificateProfile.getById(1);
  89
  90     public CertificateIssueForm(HttpServletRequest hsr) {
  91         super(hsr);
  92         u = Page.getUser(hsr);
  93         spkacChallenge = RandomToken.generateToken(16);
  94     }
  95
  96     Certificate result;
  97
  98     public Certificate getResult() {
  99         return result;
 100     }
 101
 102     @Override
 103     public boolean submit(PrintWriter out, HttpServletRequest req) {
 104         String csr = req.getParameter("CSR");
 105         String spkac = req.getParameter("SPKAC");
 106         try {
 107             try {
 108                 if (csr != null) {
 109                     byte[] data = PEM.decode("(NEW )?CERTIFICATE REQUEST", csr);
 110                     PKCS10 parsed = new PKCS10(data);
 111                     PKCS10Attributes atts = parsed.getAttributes();
 112
 113                     for (PKCS10Attribute b : atts.getAttributes()) {
 114
 115                         if ( !b.getAttributeId().equals((Object) PKCS9Attribute.EXTENSION_REQUEST_OID)) {
 116                             // unknown attrib
 117                             continue;
 118                         }
 119
 120                         for (RDN r : parsed.getSubjectName().rdns()) {
 121                             for (AVA a : r.avas()) {
 122                                 if (a.getObjectIdentifier().equals((Object) PKCS9Attribute.EMAIL_ADDRESS_OID)) {
 123                                     SANs.add(new SubjectAlternateName(SANType.EMAIL, a.getValueString()));
 124                                 } else if (a.getObjectIdentifier().equals((Object) X500Name.commonName_oid)) {
 125                                     String value = a.getValueString();
 126                                     if (value.contains(".") && !value.contains(" ")) {
 127                                         SANs.add(new SubjectAlternateName(SANType.DNS, value));
 128                                     } else {
 129                                         CN = value;
 130                                     }
 131                                 } else if (a.getObjectIdentifier().equals((Object) PKIXExtensions.SubjectAlternativeName_Id)) {
 132                                     // parse invalid SANs
 133                                 }
 134                             }
 135                         }
 136
 137                         for (Extension c : ((CertificateExtensions) b.getAttributeValue()).getAllExtensions()) {
 138                             if (c instanceof SubjectAlternativeNameExtension) {
 139
 140                                 SubjectAlternativeNameExtension san = (SubjectAlternativeNameExtension) c;
 141                                 GeneralNames obj = san.get(SubjectAlternativeNameExtension.SUBJECT_NAME);
 142                                 for (int i = 0; i < obj.size(); i++) {
 143                                     GeneralName generalName = obj.get(i);
 144                                     GeneralNameInterface peeled = generalName.getName();
 145                                     if (peeled instanceof DNSName) {
 146                                         SANs.add(new SubjectAlternateName(SANType.DNS, ((DNSName) peeled).getName()));
 147                                     } else if (peeled instanceof RFC822Name) {
 148                                         SANs.add(new SubjectAlternateName(SANType.EMAIL, ((RFC822Name) peeled).getName()));
 149                                     }
 150                                 }
 151                             } else if (c instanceof ExtendedKeyUsageExtension) {
 152                                 ExtendedKeyUsageExtension ekue = (ExtendedKeyUsageExtension) c;
 153                                 for (String s : ekue.getExtendedKeyUsage()) {
 154                                     if (s.equals("1.3.6.1.5.5.7.3.1")) {
 155                                         // server
 156                                     } else if (s.equals("1.3.6.1.5.5.7.3.2")) {
 157                                         // client
 158                                     } else if (s.equals("1.3.6.1.5.5.7.3.3")) {
 159                                         // code sign
 160                                     } else if (s.equals("1.3.6.1.5.5.7.3.4")) {
 161                                         // emailProtection
 162                                     } else if (s.equals("1.3.6.1.5.5.7.3.8")) {
 163                                         // timestamp
 164                                     } else if (s.equals("1.3.6.1.5.5.7.3.9")) {
 165                                         // OCSP
 166                                     }
 167                                 }
 168                             } else {
 169                                 // Unknown requested extension
 170                             }
 171                         }
 172
 173                     }
 174                     out.println(parsed.getSubjectName().getCommonName());
 175                     out.println(parsed.getSubjectName().getCountry());
 176
 177                     out.println("CSR DN: " + parsed.getSubjectName() + "<br/>");
 178                     PublicKey pk = parsed.getSubjectPublicKeyInfo();
 179                     checkKeyStrength(pk, out);
 180                     String sign = getSignatureAlgorithm(data);
 181                     out.println("<br/>digest: " + sign + "<br/>");
 182
 183                     this.csr = csr;
 184                     this.csrType = CSRType.CSR;
 185                 } else if (spkac != null) {
 186                     String cleanedSPKAC = spkac.replaceAll("[\r\n]", "");
 187                     byte[] data = Base64.getDecoder().decode(cleanedSPKAC);
 188                     SPKAC parsed = new SPKAC(data);
 189                     if ( !parsed.getChallenge().equals(spkacChallenge)) {
 190                         throw new GigiApiException("Challenge mismatch");
 191                     }
 192                     checkKeyStrength(parsed.getPubkey(), out);
 193                     String sign = getSignatureAlgorithm(data);
 194                     out.println("<br/>digest: " + sign + "<br/>");
 195
 196                     // spkacChallenge
 197                     this.csr = "SPKAC=" + cleanedSPKAC;
 198                     this.csrType = CSRType.SPKAC;
 199
 200                 } else {
 201                     login = "1".equals(req.getParameter("login"));
 202                     CN = req.getParameter("CN");
 203                     String hashAlg = req.getParameter("hash_alg");
 204                     if (hashAlg != null) {
 205                         selectedDigest = Digest.valueOf(hashAlg);
 206                     }
 207                     profile = CertificateProfile.getByName(req.getParameter("profile"));
 208
 209                     String pDNS = null;
 210                     String pMail = null;
 211                     Set<SubjectAlternateName> filteredSANs = new LinkedHashSet<>();
 212                     boolean server = profile.getKeyName().equals("server");
 213                     for (SubjectAlternateName san : parseSANBox(req.getParameter("SANs"))) {
 214                         if (san.getType() == SANType.DNS) {
 215                             if (u.isValidDomain(san.getName()) && server) {
 216                                 if (pDNS == null) {
 217                                     pDNS = san.getName();
 218                                 }
 219                                 filteredSANs.add(san);
 220                                 continue;
 221                             }
 222                         } else if (san.getType() == SANType.EMAIL) {
 223                             if (u.isValidEmail(san.getName()) && !server) {
 224                                 if (pMail == null) {
 225                                     pMail = san.getName();
 226                                 }
 227                                 filteredSANs.add(san);
 228                                 continue;
 229                             }
 230                         }
 231                         outputError(out, req, "The requested Subject alternate name \"%s\" has been removed.",//
 232                                 san.getType().toString().toLowerCase() + ":" + san.getName());
 233                     }
 234                     SANs = filteredSANs;
 235                     if ( !u.isValidName(CN) && !server && !CN.equals(DEFAULT_CN)) {
 236                         CN = DEFAULT_CN;
 237                         outputError(out, req, "The real name entered cannot be verified with your account.");
 238                     }
 239
 240                     final StringBuffer subject = new StringBuffer();
 241                     if (server && pDNS != null) {
 242                         subject.append("/commonName=");
 243                         subject.append(pDNS);
 244                         if (pMail != null) {
 245                             outputError(out, req, "No email is included in this certificate.");
 246                         }
 247                         if (CN.equals("")) {
 248                             CN = "";
 249                             outputError(out, req, "No real name is included in this certificate.");
 250                         }
 251                     } else {
 252                         subject.append("/commonName=");
 253                         subject.append(CN);
 254                         if (pMail != null) {
 255                             subject.append("/emailAddress=");
 256                             subject.append(pMail);
 257                         }
 258                     }
 259                     if (req.getParameter("CCA") == null) {
 260                         outputError(out, req, "You need to accept the CCA.");
 261                     }
 262                     if (isFailed(out)) {
 263                         return false;
 264                     }
 265
 266                     result = new Certificate(LoginPage.getUser(req).getId(), subject.toString(), selectedDigest.toString(), //
 267                             this.csr, this.csrType, profile, SANs.toArray(new SubjectAlternateName[SANs.size()]));
 268                     result.issue().waitFor(60000);
 269                     return true;
 270                 }
 271             } catch (IOException e) {
 272                 e.printStackTrace();
 273             } catch (IllegalArgumentException e) {
 274                 e.printStackTrace();
 275                 throw new GigiApiException("Certificate Request format is invalid.");
 276             } catch (GeneralSecurityException e) {
 277                 e.printStackTrace();
 278                 throw new GigiApiException("Certificate Request format is invalid.");
 279             } catch (InterruptedException e) {
 280                 e.printStackTrace();
 281             } catch (SQLException e) {
 282                 throw new GigiApiException(e);
 283             }
 284         } catch (GigiApiException e) {
 285             e.format(out, Page.getLanguage(req));
 286         }
 287         return false;
 288     }
 289
 290     private TreeSet<SubjectAlternateName> parseSANBox(String SANs) {
 291         String[] SANparts = SANs.split("[\r\n]+|, *");
 292         TreeSet<SubjectAlternateName> parsedNames = new TreeSet<>();
 293         for (String SANline : SANparts) {
 294             String[] parts = SANline.split(":", 2);
 295             if (parts.length == 1) {
 296                 if (parts[0].trim().equals("")) {
 297                     continue;
 298                 }
 299                 if (parts[0].contains("@")) {
 300                     parsedNames.add(new SubjectAlternateName(SANType.EMAIL, parts[0]));
 301                 } else {
 302                     parsedNames.add(new SubjectAlternateName(SANType.DNS, parts[0]));
 303                 }
 304                 continue;
 305             }
 306             try {
 307                 SANType t = Certificate.SANType.valueOf(parts[0].toUpperCase());
 308                 if (t == null) {
 309                     continue;
 310                 }
 311                 parsedNames.add(new SubjectAlternateName(t, parts[1]));
 312             } catch (IllegalArgumentException e) {
 313                 // invalid enum type
 314                 continue;
 315             }
 316         }
 317         return parsedNames;
 318     }
 319
 320     private void checkKeyStrength(PublicKey pk, PrintWriter out) {
 321         out.println("Type: " + pk.getAlgorithm() + "<br/>");
 322         if (pk instanceof RSAPublicKey) {
 323             out.println("Exponent: " + ((RSAPublicKey) pk).getPublicExponent() + "<br/>");
 324             out.println("Length: " + ((RSAPublicKey) pk).getModulus().bitLength());
 325         } else if (pk instanceof DSAPublicKey) {
 326             DSAPublicKey dpk = (DSAPublicKey) pk;
 327             out.println("Length: " + dpk.getY().bitLength() + "<br/>");
 328             out.println(dpk.getParams());
 329         } else if (pk instanceof ECPublicKey) {
 330             ECPublicKey epk = (ECPublicKey) pk;
 331             out.println("Length-x: " + epk.getW().getAffineX().bitLength() + "<br/>");
 332             out.println("Length-y: " + epk.getW().getAffineY().bitLength() + "<br/>");
 333             out.println(epk.getParams().getCurve());
 334         }
 335     }
 336
 337     private static String getSignatureAlgorithm(byte[] data) throws IOException {
 338         DerInputStream in = new DerInputStream(data);
 339         DerValue[] seq = in.getSequence(3);
 340         return AlgorithmId.parse(seq[1]).getName();
 341     }
 342
 343     @Override
 344     public void output(PrintWriter out, Language l, Map<String, Object> vars) {
 345         if (csr == null) {
 346             HashMap<String, Object> vars2 = new HashMap<String, Object>(vars);
 347             vars2.put("csrf", getCSRFToken());
 348             vars2.put("csrf_name", getCsrfFieldName());
 349             vars2.put("spkacChallenge", spkacChallenge);
 350             tIni.output(out, l, vars2);
 351             return;
 352         } else {
 353             super.output(out, l, vars);
 354         }
 355     }
 356
 357     @Override
 358     protected void outputContent(PrintWriter out, Language l, Map<String, Object> vars) {
 359         HashMap<String, Object> vars2 = new HashMap<String, Object>(vars);
 360         vars2.put("CCA", "<a href='/policy/CAcertCommunityAgreement.html'>CCA</a>");
 361
 362         StringBuffer content = new StringBuffer();
 363         for (SubjectAlternateName SAN : SANs) {
 364             content.append(SAN.getType().toString().toLowerCase());
 365             content.append(':');
 366             content.append(SAN.getName());
 367             content.append('\n');
 368         }
 369
 370         vars2.put("CN", CN);
 371         vars2.put("emails", content.toString());
 372         vars2.put("hashs", new HashAlgorithms(selectedDigest));
 373         vars2.put("profiles", new IterableDataset() {
 374
 375             int i = 1;
 376
 377             @Override
 378             public boolean next(Language l, Map<String, Object> vars) {
 379                 CertificateProfile cp = CertificateProfile.getById(i++);
 380                 if (cp == null) {
 381                     return false;
 382                 }
 383                 if (cp.getId() == profile.getId()) {
 384                     vars.put("selected", " selected");
 385                 } else {
 386                     vars.put("selected", "");
 387                 }
 388                 vars.put("key", cp.getKeyName());
 389                 vars.put("name", cp.getVisibleName());
 390                 return true;
 391             }
 392         });
 393         t.output(out, l, vars2);
 394     }
 395 }