auth/auth-certman/src/main/java/org/onap/aaf/auth/cm/ca/CA.java

   1 /**
   2  * ============LICENSE_START====================================================
   3  * org.onap.aaf
   4  * ===========================================================================
   5  * Copyright (c) 2018 AT&T Intellectual Property. All rights reserved.
   6  * ===========================================================================
   7  * Licensed under the Apache License, Version 2.0 (the "License");
   8  * you may not use this file except in compliance with the License.
   9  * You may obtain a copy of the License at
  10  *
  11  *      http://www.apache.org/licenses/LICENSE-2.0
  12  *
  13  * Unless required by applicable law or agreed to in writing, software
  14  * distributed under the License is distributed on an "AS IS" BASIS,
  15  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16  * See the License for the specific language governing permissions and
  17  * limitations under the License.
  18  * ============LICENSE_END====================================================
  19  *
  20  */
  21 package org.onap.aaf.auth.cm.ca;
  22
  23 import java.io.File;
  24 import java.io.FileInputStream;
  25 import java.io.IOException;
  26 import java.security.MessageDigest;
  27 import java.security.Principal;
  28 import java.util.ArrayList;
  29 import java.util.Collections;
  30 import java.util.HashSet;
  31 import java.util.List;
  32 import java.util.Set;
  33
  34 import org.bouncycastle.asn1.x500.style.BCStyle;
  35 import org.onap.aaf.auth.cm.cert.CSRMeta;
  36 import org.onap.aaf.auth.cm.cert.RDN;
  37 import org.onap.aaf.cadi.Access;
  38 import org.onap.aaf.cadi.Access.Level;
  39 import org.onap.aaf.cadi.cm.CertException;
  40 import org.onap.aaf.misc.env.Trans;
  41 import org.onap.aaf.misc.env.util.Split;
  42
  43 public abstract class CA {
  44         private static final String MUST_EXIST_TO_CREATE_CSRS_FOR = " must exist to create CSRs for ";
  45         //TODO figuring out what is an Issuing CA is a matter of convention.  Consider SubClassing for Open Source
  46         public static final String ISSUING_CA = "Issuing CA";
  47         public static final String CM_CA_PREFIX = "cm_ca.";
  48         public static final String CM_CA_BASE_SUBJECT = ".baseSubject";
  49         protected static final String CM_PUBLIC_DIR = "cm_public_dir";
  50         private static final String CM_TRUST_CAS = "cm_trust_cas";
  51         protected static final String CM_BACKUP_CAS = "cm_backup_cas";
  52
  53         public static final Set<String> EMPTY = Collections.unmodifiableSet(new HashSet<String>());
  54
  55
  56         private final String name,env;
  57         private MessageDigest messageDigest;
  58         private final String permType;
  59         private Set<String> caIssuerDNs;
  60         private final ArrayList<String> idDomains;
  61         private String[] trustedCAs;
  62         private List<RDN> rdns;
  63
  64
  65         protected CA(Access access, String caName, String env) throws IOException, CertException {
  66                 trustedCAs = new String[4]; // starting array
  67                 this.name = caName;
  68                 this.env = env;
  69                 permType = access.getProperty(CM_CA_PREFIX + name + ".perm_type",null);
  70                 if(permType==null) {
  71                         throw new CertException(CM_CA_PREFIX + name + ".perm_type" + MUST_EXIST_TO_CREATE_CSRS_FOR + caName);
  72                 }
  73                 caIssuerDNs = new HashSet<String>();
  74
  75                 String tag = CA.CM_CA_PREFIX+caName+CA.CM_CA_BASE_SUBJECT;
  76
  77                 String fields = access.getProperty(tag, null);
  78                 if(fields==null) {
  79                         throw new CertException(tag + MUST_EXIST_TO_CREATE_CSRS_FOR + caName);
  80                 }
  81                 for(RDN rdn : rdns = RDN.parse('/',fields)) {
  82                         if(rdn.aoi==BCStyle.EmailAddress) { // Cert Specs say Emails belong in Subject
  83                                 throw new CertException("email address is not allowed in " + CM_CA_BASE_SUBJECT);
  84                         }
  85                 }
  86
  87                 idDomains = new ArrayList<String>();
  88                 StringBuilder sb = null;
  89                 for(String s : Split.splitTrim(',', access.getProperty(CA.CM_CA_PREFIX+caName+".idDomains", ""))) {
  90                         if(s.length()>0) {
  91                                 if(sb==null) {
  92                                         sb = new StringBuilder();
  93                                 } else {
  94                                         sb.append(", ");
  95                                 }
  96                                 idDomains.add(s);
  97                                 sb.append(s);
  98                         }
  99                 }
 100                 if(sb!=null) {
 101                         access.printf(Level.INIT, "CA '%s' supports Personal Certificates for %s", caName, sb);
 102                 }
 103
 104                 String data_dir = access.getProperty(CM_PUBLIC_DIR,null);
 105                 if(data_dir!=null) {
 106                         File data = new File(data_dir);
 107                         byte[] bytes;
 108                         if(data.exists()) {
 109                                 String trust_cas = access.getProperty(CM_TRUST_CAS,null);
 110                                 if(trust_cas!=null) {
 111                                         for(String fname : Split.splitTrim(',', trust_cas)) {
 112                                                 File crt = new File(data,fname);
 113                                                 if(crt.exists()) {
 114                                                         access.printf(Level.INIT, "Loading CA Cert from %s", crt.getAbsolutePath());
 115                                                         bytes = new byte[(int)crt.length()];
 116                                                         FileInputStream fis = new FileInputStream(crt);
 117                                                         try {
 118                                                                 fis.read(bytes);
 119                                                                 addTrustedCA(new String(bytes));
 120                                                         } finally {
 121                                                                 fis.close();
 122                                                         }
 123                                                 } else {
 124                                                         access.printf(Level.INIT, "FAILED to Load CA Cert from %s", crt.getAbsolutePath());
 125                                                 }
 126                                         }
 127                                 } else {
 128                                         access.printf(Level.INIT, "Cannot load external TRUST CAs: No property %s",CM_TRUST_CAS);
 129                                 }
 130                         } else {
 131                                 access.printf(Level.INIT, "Cannot load external TRUST CAs: %s doesn't exist, or is not accessible",data.getAbsolutePath());
 132                         }
 133                 }
 134         }
 135
 136         protected void addCaIssuerDN(String issuerDN) {
 137                 caIssuerDNs.add(issuerDN);
 138         }
 139
 140         protected synchronized void addTrustedCA(final String crtString) {
 141                 String crt;
 142                 if(crtString.endsWith("\n")) {
 143                         crt = crtString;
 144                 } else {
 145                         crt = crtString + '\n';
 146                 }
 147                 for(int i=0;i<trustedCAs.length;++i) {
 148                         if(trustedCAs[i]==null) {
 149                                 trustedCAs[i]=crt;
 150                                 return;
 151                         }
 152                 }
 153                 String[] temp = new String[trustedCAs.length+5];
 154                 System.arraycopy(trustedCAs,0,temp, 0, trustedCAs.length);
 155                 temp[trustedCAs.length]=crt;
 156                 trustedCAs = temp;
 157         }
 158
 159         public Set<String> getCaIssuerDNs() {
 160                 return caIssuerDNs;
 161         }
 162
 163         public String[] getTrustedCAs() {
 164                 return trustedCAs;
 165         }
 166
 167         public String getEnv() {
 168                 return env;
 169         }
 170
 171         protected void setMessageDigest(MessageDigest md) {
 172                 messageDigest = md;
 173         }
 174
 175         /*
 176          * End Required Constructor calls
 177          */
 178
 179         public String getName() {
 180                 return name;
 181         }
 182
 183
 184         public String getPermType() {
 185                 return permType;
 186         }
 187
 188         public abstract X509andChain sign(Trans trans, CSRMeta csrmeta) throws IOException, CertException;
 189
 190         /* (non-Javadoc)
 191          * @see org.onap.aaf.auth.cm.ca.CA#inPersonalDomains(java.security.Principal)
 192          */
 193         public boolean inPersonalDomains(Principal p) {
 194                 int at = p.getName().indexOf('@');
 195                 if(at>=0) {
 196                         return idDomains.contains(p.getName().substring(at+1));
 197                 } else {
 198                         return false;
 199                 }
 200         }
 201
 202         public MessageDigest messageDigest() {
 203                 return messageDigest;
 204         }
 205
 206         public CSRMeta newCSRMeta() {
 207                 return new CSRMeta(rdns);
 208         }
 209 }