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