1 package org.cacert.gigi.pages.account.certs;
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.HashSet;
13 import java.util.LinkedHashSet;
15 import java.util.TreeSet;
17 import org.cacert.gigi.GigiApiException;
18 import org.cacert.gigi.crypto.SPKAC;
19 import org.cacert.gigi.dbObjects.Certificate;
20 import org.cacert.gigi.dbObjects.Certificate.CSRType;
21 import org.cacert.gigi.dbObjects.Certificate.SANType;
22 import org.cacert.gigi.dbObjects.Certificate.SubjectAlternateName;
23 import org.cacert.gigi.dbObjects.CertificateOwner;
24 import org.cacert.gigi.dbObjects.CertificateProfile;
25 import org.cacert.gigi.dbObjects.CertificateProfile.PropertyTemplate;
26 import org.cacert.gigi.dbObjects.Digest;
27 import org.cacert.gigi.dbObjects.Group;
28 import org.cacert.gigi.dbObjects.Organisation;
29 import org.cacert.gigi.dbObjects.User;
30 import org.cacert.gigi.output.template.SprintfCommand;
31 import org.cacert.gigi.util.AuthorizationContext;
32 import org.cacert.gigi.util.CAA;
33 import org.cacert.gigi.util.DomainAssessment;
34 import org.cacert.gigi.util.PEM;
35 import org.cacert.gigi.util.RateLimit;
37 import sun.security.pkcs.PKCS9Attribute;
38 import sun.security.pkcs10.PKCS10;
39 import sun.security.pkcs10.PKCS10Attribute;
40 import sun.security.pkcs10.PKCS10Attributes;
41 import sun.security.util.DerInputStream;
42 import sun.security.util.DerValue;
43 import sun.security.util.ObjectIdentifier;
44 import sun.security.x509.AVA;
45 import sun.security.x509.AlgorithmId;
46 import sun.security.x509.CertificateExtensions;
47 import sun.security.x509.DNSName;
48 import sun.security.x509.ExtendedKeyUsageExtension;
49 import sun.security.x509.Extension;
50 import sun.security.x509.GeneralName;
51 import sun.security.x509.GeneralNameInterface;
52 import sun.security.x509.GeneralNames;
53 import sun.security.x509.PKIXExtensions;
54 import sun.security.x509.RDN;
55 import sun.security.x509.RFC822Name;
56 import sun.security.x509.SubjectAlternativeNameExtension;
57 import sun.security.x509.X500Name;
59 public class CertificateRequest {
61 public static final String DEFAULT_CN = "SomeCA User";
63 public static final ObjectIdentifier OID_KEY_USAGE_SSL_SERVER = ObjectIdentifier.newInternal(new int[] {
64 1, 3, 6, 1, 5, 5, 7, 3, 1
67 public static final ObjectIdentifier OID_KEY_USAGE_SSL_CLIENT = ObjectIdentifier.newInternal(new int[] {
68 1, 3, 6, 1, 5, 5, 7, 3, 2
71 public static final ObjectIdentifier OID_KEY_USAGE_CODESIGN = ObjectIdentifier.newInternal(new int[] {
72 1, 3, 6, 1, 5, 5, 7, 3, 3
75 public static final ObjectIdentifier OID_KEY_USAGE_EMAIL_PROTECTION = ObjectIdentifier.newInternal(new int[] {
76 1, 3, 6, 1, 5, 5, 7, 3, 4
79 public static final ObjectIdentifier OID_KEY_USAGE_TIMESTAMP = ObjectIdentifier.newInternal(new int[] {
80 1, 3, 6, 1, 5, 5, 7, 3, 8
83 public static final ObjectIdentifier OID_KEY_USAGE_OCSP = ObjectIdentifier.newInternal(new int[] {
84 1, 3, 6, 1, 5, 5, 7, 3, 9
87 private CSRType csrType;
89 private final PublicKey pk;
93 public String name = DEFAULT_CN;
95 private Set<SubjectAlternateName> SANs;
97 private Digest selectedDigest = Digest.getDefault();
99 private CertificateProfile profile = CertificateProfile.getById(1);
101 private String ou = "";
103 private AuthorizationContext ctx;
105 private String pDNS, pMail;
107 public CertificateRequest(AuthorizationContext c, String csr) throws IOException, GeneralSecurityException, GigiApiException {
108 this(c, csr, (CertificateProfile) null);
111 public CertificateRequest(AuthorizationContext ctx, String csr, CertificateProfile cp) throws GeneralSecurityException, IOException, IOException {
115 } else if (ctx.getActor().getAssurancePoints() > 50) {
116 profile = CertificateProfile.getByName("client-a");
118 byte[] data = PEM.decode("(NEW )?CERTIFICATE REQUEST", csr);
119 PKCS10 parsed = new PKCS10(data);
120 PKCS10Attributes atts = parsed.getAttributes();
122 TreeSet<SubjectAlternateName> SANs = new TreeSet<>();
123 for (RDN r : parsed.getSubjectName().rdns()) {
124 for (AVA a : r.avas()) {
125 if (a.getObjectIdentifier().equals((Object) PKCS9Attribute.EMAIL_ADDRESS_OID)) {
126 SANs.add(new SubjectAlternateName(SANType.EMAIL, a.getValueString()));
127 } else if (a.getObjectIdentifier().equals((Object) X500Name.commonName_oid)) {
128 String value = a.getValueString();
129 if (value.contains(".") && !value.contains(" ")) {
130 SANs.add(new SubjectAlternateName(SANType.DNS, value));
134 } else if (a.getObjectIdentifier().equals((Object) PKIXExtensions.SubjectAlternativeName_Id)) {
135 // TODO? parse invalid SANs
140 for (PKCS10Attribute b : atts.getAttributes()) {
142 if ( !b.getAttributeId().equals((Object) PKCS9Attribute.EXTENSION_REQUEST_OID)) {
147 for (Extension c : ((CertificateExtensions) b.getAttributeValue()).getAllExtensions()) {
148 if (c instanceof SubjectAlternativeNameExtension) {
150 SubjectAlternativeNameExtension san = (SubjectAlternativeNameExtension) c;
151 GeneralNames obj = san.get(SubjectAlternativeNameExtension.SUBJECT_NAME);
152 for (int i = 0; i < obj.size(); i++) {
153 GeneralName generalName = obj.get(i);
154 GeneralNameInterface peeled = generalName.getName();
155 if (peeled instanceof DNSName) {
156 SANs.add(new SubjectAlternateName(SANType.DNS, ((DNSName) peeled).getName()));
157 } else if (peeled instanceof RFC822Name) {
158 SANs.add(new SubjectAlternateName(SANType.EMAIL, ((RFC822Name) peeled).getName()));
161 } else if (c instanceof ExtendedKeyUsageExtension) {
162 ExtendedKeyUsageExtension ekue = (ExtendedKeyUsageExtension) c;
163 String appendix = "";
164 if (ctx.getActor().getAssurancePoints() >= 50) {
167 for (String s : ekue.getExtendedKeyUsage()) {
168 if (s.equals(OID_KEY_USAGE_SSL_SERVER.toString())) {
170 profile = CertificateProfile.getByName("server" + appendix);
171 } else if (s.equals(OID_KEY_USAGE_SSL_CLIENT.toString())) {
173 profile = CertificateProfile.getByName("client" + appendix);
174 } else if (s.equals(OID_KEY_USAGE_CODESIGN.toString())) {
176 } else if (s.equals(OID_KEY_USAGE_EMAIL_PROTECTION.toString())) {
178 profile = CertificateProfile.getByName("mail" + appendix);
179 } else if (s.equals(OID_KEY_USAGE_TIMESTAMP.toString())) {
181 } else if (s.equals(OID_KEY_USAGE_OCSP.toString())) {
186 // Unknown requested extension
192 pk = parsed.getSubjectPublicKeyInfo();
193 String sign = getSignatureAlgorithm(data);
197 this.csrType = CSRType.CSR;
200 public CertificateRequest(AuthorizationContext ctx, String spkac, String spkacChallenge) throws IOException, GigiApiException, GeneralSecurityException {
202 String cleanedSPKAC = spkac.replaceAll("[\r\n]", "");
203 byte[] data = Base64.getDecoder().decode(cleanedSPKAC);
204 SPKAC parsed = new SPKAC(data);
205 if ( !parsed.getChallenge().equals(spkacChallenge)) {
206 throw new GigiApiException("Challenge mismatch");
208 pk = parsed.getPubkey();
209 String sign = getSignatureAlgorithm(data);
211 this.SANs = new HashSet<>();
212 this.csr = "SPKAC=" + cleanedSPKAC;
213 this.csrType = CSRType.SPKAC;
217 private static String getSignatureAlgorithm(byte[] data) throws IOException {
218 DerInputStream in = new DerInputStream(data);
219 DerValue[] seq = in.getSequence(3);
220 return AlgorithmId.parse(seq[1]).getName();
223 private void guessDigest(String sign) {
224 if (sign.toLowerCase().startsWith("sha512")) {
225 selectedDigest = Digest.SHA512;
226 } else if (sign.toLowerCase().startsWith("sha384")) {
227 selectedDigest = Digest.SHA384;
228 } else if (sign.toLowerCase().startsWith("sha256")) {
229 selectedDigest = Digest.SHA256;
233 public void checkKeyStrength(PrintWriter out) {
234 out.println("Type: " + pk.getAlgorithm() + "<br/>");
235 if (pk instanceof RSAPublicKey) {
236 out.println("Exponent: " + ((RSAPublicKey) pk).getPublicExponent() + "<br/>");
237 out.println("Length: " + ((RSAPublicKey) pk).getModulus().bitLength());
238 } else if (pk instanceof DSAPublicKey) {
239 DSAPublicKey dpk = (DSAPublicKey) pk;
240 out.println("Length: " + dpk.getY().bitLength() + "<br/>");
241 out.println(dpk.getParams());
242 } else if (pk instanceof ECPublicKey) {
243 ECPublicKey epk = (ECPublicKey) pk;
244 out.println("Length-x: " + epk.getW().getAffineX().bitLength() + "<br/>");
245 out.println("Length-y: " + epk.getW().getAffineY().bitLength() + "<br/>");
246 out.println(epk.getParams().getCurve());
250 private Set<SubjectAlternateName> parseSANBox(String SANs) {
251 String[] SANparts = SANs.split("[\r\n]+|, *");
252 Set<SubjectAlternateName> parsedNames = new LinkedHashSet<>();
253 for (String SANline : SANparts) {
254 String[] parts = SANline.split(":", 2);
255 if (parts.length == 1) {
256 if (parts[0].trim().equals("")) {
259 if (parts[0].contains("@")) {
260 parsedNames.add(new SubjectAlternateName(SANType.EMAIL, parts[0]));
262 parsedNames.add(new SubjectAlternateName(SANType.DNS, parts[0]));
267 SANType t = Certificate.SANType.valueOf(parts[0].toUpperCase().trim());
271 parsedNames.add(new SubjectAlternateName(t, parts[1].trim()));
272 } catch (IllegalArgumentException e) {
280 public Set<SubjectAlternateName> getSANs() {
284 public String getName() {
288 public synchronized String getOu() {
289 if (ctx.getTarget() instanceof Organisation) {
292 throw new IllegalStateException();
295 public Digest getSelectedDigest() {
296 return selectedDigest;
299 public CertificateProfile getProfile() {
303 public synchronized boolean update(String nameIn, String hashAlg, String profileStr, String newOrgStr, String ou, String SANsStr) throws GigiApiException {
304 GigiApiException error = new GigiApiException();
306 if (hashAlg != null) {
307 selectedDigest = Digest.valueOf(hashAlg);
309 this.profile = CertificateProfile.getByName(profileStr);
310 if (ctx.getTarget() instanceof Organisation) {
314 if ( !this.profile.canBeIssuedBy(ctx.getTarget(), ctx.getActor())) {
315 this.profile = CertificateProfile.getById(1);
316 error.mergeInto(new GigiApiException("Certificate Profile is invalid."));
320 verifySANs(error, profile, parseSANBox(SANsStr), ctx.getTarget(), ctx.getActor());
322 if ( !error.isEmpty()) {
328 private void verifySANs(GigiApiException error, CertificateProfile p, Set<SubjectAlternateName> sANs2, CertificateOwner owner, User user) {
329 Set<SubjectAlternateName> filteredSANs = new LinkedHashSet<>();
330 PropertyTemplate domainTemp = p.getTemplates().get("domain");
331 PropertyTemplate emailTemp = p.getTemplates().get("email");
334 for (SubjectAlternateName san : sANs2) {
335 if (san.getType() == SANType.DNS) {
336 if (domainTemp != null && owner.isValidDomain(san.getName())) {
339 DomainAssessment.checkCertifiableDomain(san.getName(), user.isInGroup(Group.CODESIGNING), false);
341 if ( !valid || !CAA.verifyDomainAccess(owner, p, san.getName()) || (pDNS != null && !domainTemp.isMultiple())) {
345 pDNS = san.getName();
347 filteredSANs.add(san);
350 } catch (GigiApiException e) {
355 } else if (san.getType() == SANType.EMAIL) {
356 if (emailTemp != null && owner.isValidEmail(san.getName())) {
357 if (pMail != null && !emailTemp.isMultiple()) {
361 pMail = san.getName();
363 filteredSANs.add(san);
368 error.mergeInto(new GigiApiException(SprintfCommand.createSimple(//
369 "The requested subject alternate name (SAN) \"{0}\" has been removed.", san.getType().toString().toLowerCase() + ":" + san.getName())));
374 // domain email name name=WoTUser orga
375 public synchronized Certificate draft() throws GigiApiException {
377 GigiApiException error = new GigiApiException();
379 HashMap<String, String> subject = new HashMap<>();
380 PropertyTemplate domainTemp = profile.getTemplates().get("domain");
381 PropertyTemplate emailTemp = profile.getTemplates().get("email");
382 PropertyTemplate nameTemp = profile.getTemplates().get("name");
383 PropertyTemplate wotUserTemp = profile.getTemplates().get("name=WoTUser");
384 verifySANs(error, profile, SANs, ctx.getTarget(), ctx.getActor());
386 // Ok, let's determine the CN
388 // 1. the user's "real name", iff the real name is to be included i.e.
389 // not empty (name), or to be forced to WOTUser
391 // 2. the user's "primary domain", iff "1." doesn't match and there is a
392 // primary domain. (domainTemp != null)
394 String verifiedCN = null;
395 if (ctx.getTarget() instanceof Organisation) {
396 if ( !name.equals("")) {
400 verifiedCN = verifyName(error, nameTemp, wotUserTemp, verifiedCN);
402 if (pDNS == null && domainTemp != null && domainTemp.isRequired()) {
403 error.mergeInto(new GigiApiException("Server Certificates require a DNS name."));
404 } else if (domainTemp != null && verifiedCN == null) {
405 // user may add domains
408 if (verifiedCN != null) {
409 subject.put("CN", verifiedCN);
413 if (emailTemp != null) {
414 subject.put("EMAIL", pMail);
416 // verify SANs should prevent this
418 error.mergeInto(new GigiApiException("You may not include an email in this certificate."));
421 if (emailTemp != null && emailTemp.isRequired()) {
422 error.mergeInto(new GigiApiException("You need to include an email in this certificate."));
426 if (ctx.getTarget() instanceof Organisation) {
427 Organisation org = (Organisation) ctx.getTarget();
428 subject.put("O", org.getName());
429 subject.put("C", org.getCountry().getCode());
430 subject.put("ST", org.getProvince());
431 subject.put("L", org.getCity());
433 subject.put("OU", ou);
436 System.out.println(subject);
437 if ( !error.isEmpty()) {
441 if (RATE_LIMIT.isLimitExceeded(Integer.toString(ctx.getActor().getId()))) {
442 throw new GigiApiException("Rate Limit Exceeded");
444 return new Certificate(ctx.getTarget(), ctx.getActor(), subject, selectedDigest, //
445 this.csr, this.csrType, profile, SANs.toArray(new SubjectAlternateName[SANs.size()]));
446 } catch (IOException e) {
452 // 100 per 10 minutes
453 public static final RateLimit RATE_LIMIT = new RateLimit(100, 10 * 60 * 1000);
455 private String verifyName(GigiApiException error, PropertyTemplate nameTemp, PropertyTemplate wotUserTemp, String verifiedCN) {
457 // possible configurations: name {y,null,?}, name=WoTUser {y,null}
462 // ? y -> real, default
463 // ? null -> real, default, null
464 boolean realIsOK = false;
465 boolean nullIsOK = false;
466 boolean defaultIsOK = false;
467 if (wotUserTemp != null && ( !wotUserTemp.isRequired() || wotUserTemp.isMultiple())) {
468 error.mergeInto(new GigiApiException("Internal configuration error detected."));
470 if (nameTemp != null && nameTemp.isRequired() && !nameTemp.isMultiple()) {
472 } else if (nameTemp == null) {
473 defaultIsOK = wotUserTemp != null;
474 nullIsOK = !defaultIsOK;
475 } else if (nameTemp != null && !nameTemp.isRequired() && !nameTemp.isMultiple()) {
478 nullIsOK = wotUserTemp == null;
480 error.mergeInto(new GigiApiException("Internal configuration error detected."));
482 if (ctx.getTarget() instanceof User) {
483 User u = (User) ctx.getTarget();
484 if (name != null && u.isValidName(name)) {
488 error.mergeInto(new GigiApiException("Your real name is not allowed in this certificate."));
491 } else if (nullIsOK) {
495 } else if (name != null && name.equals(DEFAULT_CN)) {
499 error.mergeInto(new GigiApiException("The default name is not allowed in this certificate."));
502 } else if (realIsOK) {
503 name = u.getPreferredName().toString();
506 } else if (name == null || name.equals("")) {
510 error.mergeInto(new GigiApiException("A name is required in this certificate."));
513 } else if (realIsOK) {
514 name = u.getPreferredName().toString();
518 error.mergeInto(new GigiApiException("The name you entered was invalid."));
521 if (wotUserTemp != null) {
522 if ( !wotUserTemp.isRequired() || wotUserTemp.isMultiple()) {
523 error.mergeInto(new GigiApiException("Internal configuration error detected."));
525 if ( !name.equals(DEFAULT_CN)) {
527 error.mergeInto(new GigiApiException("You may not change the name for this certificate type."));
529 verifiedCN = DEFAULT_CN;
533 if (nameTemp != null) {
534 if (name.equals("")) {
535 if (nameTemp.isRequired()) {
536 // nothing, but required
538 error.mergeInto(new GigiApiException("No name entered, but one was required."));
540 // nothing and not required
543 } else if (u.isValidName(name)) {
546 if (nameTemp.isRequired()) {
547 error.mergeInto(new GigiApiException("The name entered, does not match the details in your account. You cannot issue certificates with this name. Enter a name that matches the one that has been verified in your account, because a name is required for this certificate type."));
548 } else if (name.equals(DEFAULT_CN)) {
549 verifiedCN = DEFAULT_CN;
552 error.mergeInto(new GigiApiException("The name entered, does not match the details in your account. You cannot issue certificates with this name. Enter a name that matches the one that has been verified in your account or keep the default name."));
556 if ( !name.equals("")) {
558 error.mergeInto(new GigiApiException("No real name is included in this certificate. The real name, you entered will be ignored."));
568 error.mergeInto(new GigiApiException("No real name is included in this certificate. The real name, you entered will be ignored."));