OSX/libsecurity_keychain/libDER/Tests/parseCrl.c

   1 /*
   2  * Copyright (c) 2005-2007,2010-2011 Apple Inc. All Rights Reserved.
   3  *
   4  * parseCrl.c - parse a DER-encoded X509 CRL using libDER.
   5  */
   6
   7 #include <stdlib.h>
   8 #include <strings.h>
   9 #include <stdio.h>
  10 #include <unistd.h>
  11 #include <libDER/libDER.h>
  12 #include <libDER/asn1Types.h>
  13 #include <libDER/DER_CertCrl.h>
  14 #include <libDER/DER_Keys.h>
  15 #include <libDERUtils/fileIo.h>
  16 #include <libDERUtils/libDERUtils.h>
  17 #include <libDERUtils/printFields.h>
  18
  19 static void usage(char **argv)
  20 {
  21         printf("usage: %s crlFile [options]\n", argv[0]);
  22         printf("Options:\n");
  23         printf("  -v     -- verbose \n");
  24         /* etc. */
  25         exit(1);
  26 }
  27
  28 /*
  29  * This is a SEQUENCE OF so we use the low-level DERDecodeSeq* routines to snag one entry
  30  * at a time.
  31  */
  32 static void     printRevokedCerts(
  33         DERItem *revokedCerts,
  34         int verbose)
  35 {
  36         DERReturn drtn;
  37         DERDecodedInfo currItem;
  38         DERSequence seq;
  39         unsigned certNum;
  40         DERRevokedCert revoked;
  41
  42         drtn = DERDecodeSeqContentInit(revokedCerts, &seq);
  43         if(drtn) {
  44                 DERPerror("DERDecodeSeqContentInit(revokedCerts)", drtn);
  45                 return;
  46         }
  47
  48         for(certNum=0; ; certNum++) {
  49                 drtn = DERDecodeSeqNext(&seq, &currItem);
  50                 switch(drtn) {
  51                         case DR_EndOfSequence:
  52                                 /* normal termination */
  53                                 return;
  54                         default:
  55                                 DERPerror("DERDecodeSeqNext", drtn);
  56                                 return;
  57                         case DR_Success:
  58                                 doIndent();
  59                                 printf("revoked cert %u\n", certNum);
  60                                 incrIndent();
  61                                 drtn = DERParseSequenceContent(&currItem.content,
  62                                         DERNumRevokedCertItemSpecs, DERRevokedCertItemSpecs,
  63                                         &revoked, sizeof(revoked));
  64                                 if(drtn) {
  65                                         DERPerror("DERParseSequenceContent(RevokedCert)", drtn);
  66                                         decrIndent();
  67                                         return;
  68                                 }
  69                                 printItem("serialNum", IT_Leaf, verbose, ASN1_INTEGER, &revoked.serialNum);
  70                                 decodePrintItem("revocationDate",  IT_Leaf, verbose, &revoked.revocationDate);
  71                                 printItem("extensions", IT_Branch, verbose, ASN1_CONSTR_SEQUENCE, &revoked.extensions);
  72                                 decrIndent();
  73                 }
  74         }
  75 }
  76
  77 int main(int argc, char **argv)
  78 {
  79         unsigned char *crlData = NULL;
  80         unsigned crlDataLen = 0;
  81         DERSignedCertCrl signedCrl;
  82         DERTBSCrl tbs;
  83         DERReturn drtn;
  84         DERItem item;
  85         int verbose = 0;
  86         extern char *optarg;
  87         int arg;
  88         extern int optind;
  89
  90         if(argc < 2) {
  91                 usage(argv);
  92         }
  93         if(readFile(argv[1], &crlData, &crlDataLen)) {
  94                 printf("***Error reading CRL from %s. Aborting.\n", argv[1]);
  95                 exit(1);
  96         }
  97
  98         optind = 2;
  99         while ((arg = getopt(argc, argv, "vh")) != -1) {
 100                 switch (arg) {
 101                         case 'v':
 102                                 verbose = 1;
 103                                 break;
 104                         case 'h':
 105                                 usage(argv);
 106                 }
 107         }
 108         if(optind != argc) {
 109                 usage(argv);
 110         }
 111
 112         /* Top level decode of signed CRL into 3 components */
 113         item.data = crlData;
 114         item.length = crlDataLen;
 115         drtn = DERParseSequence(&item, DERNumSignedCertCrlItemSpecs, DERSignedCertCrlItemSpecs,
 116                 &signedCrl, sizeof(signedCrl));
 117         if(drtn) {
 118                 DERPerror("DERParseSequence(SignedCrl)", drtn);
 119                 exit(1);
 120         }
 121         printItem("TBSCrl", IT_Branch, verbose, ASN1_CONSTR_SEQUENCE, &signedCrl.tbs);
 122
 123         incrIndent();
 124
 125         /* decode the TBSCrl - it was saved in full DER form */
 126         drtn = DERParseSequence(&signedCrl.tbs,
 127                 DERNumTBSCrlItemSpecs, DERTBSCrlItemSpecs,
 128                 &tbs, sizeof(tbs));
 129         if(drtn) {
 130                 DERPerror("DERParseSequenceContent(TBSCrl)", drtn);
 131                 exit(1);
 132         }
 133         if(tbs.version.data) {
 134                 printItem("version", IT_Leaf, verbose, ASN1_INTEGER, &tbs.version);
 135         }
 136
 137         printItem("tbsSigAlg", IT_Branch, verbose, ASN1_CONSTR_SEQUENCE, &tbs.tbsSigAlg);
 138         incrIndent();
 139         printAlgId(&tbs.tbsSigAlg, verbose);
 140         decrIndent();
 141
 142         printItem("issuer", IT_Leaf, verbose, ASN1_CONSTR_SEQUENCE, &tbs.issuer);
 143
 144         decodePrintItem("thisUpdate",  IT_Leaf, verbose, &tbs.thisUpdate);
 145         decodePrintItem("nextUpdate",  IT_Leaf, verbose, &tbs.nextUpdate);
 146
 147         if(tbs.revokedCerts.data) {
 148                 printItem("version", IT_Leaf, verbose, ASN1_CONSTR_SEQUENCE, &tbs.revokedCerts);
 149                 incrIndent();
 150                 printRevokedCerts(&tbs.revokedCerts, verbose);
 151                 decrIndent();
 152         }
 153
 154         if(tbs.extensions.data) {
 155                 printItem("extensions", IT_Leaf, verbose, ASN1_CONSTRUCTED | ASN1_CONTEXT_SPECIFIC | 3,
 156                         &tbs.extensions);
 157         }
 158
 159         printItem("sigAlg", IT_Branch, verbose, ASN1_CONSTR_SEQUENCE, &signedCrl.sigAlg);
 160         incrIndent();
 161         printAlgId(&signedCrl.sigAlg, verbose);
 162         decrIndent();
 163
 164         printItem("sig", IT_Leaf, verbose, ASN1_BIT_STRING, &signedCrl.sig);
 165
 166         return 0;
 167 }