test/x509aux.c

   1 /*
   2  * Copyright 2016-2021 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the Apache License 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  * https://www.openssl.org/source/license.html
   8  * or in the file LICENSE in the source distribution.
   9  */
  10
  11 #include <stdio.h>
  12 #include <string.h>
  13 #include <errno.h>
  14
  15 #include <openssl/x509.h>
  16 #include <openssl/pem.h>
  17 #include <openssl/conf.h>
  18 #include <openssl/err.h>
  19 #include "internal/nelem.h"
  20 #include "testutil.h"
  21
  22 static int test_certs(int num)
  23 {
  24     int c;
  25     char *name = 0;
  26     char *header = 0;
  27     unsigned char *data = 0;
  28     long len;
  29     typedef X509 *(*d2i_X509_t)(X509 **, const unsigned char **, long);
  30     typedef int (*i2d_X509_t)(const X509 *, unsigned char **);
  31     int err = 0;
  32     BIO *fp = BIO_new_file(test_get_argument(num), "r");
  33
  34     if (!TEST_ptr(fp))
  35         return 0;
  36
  37     for (c = 0; !err && PEM_read_bio(fp, &name, &header, &data, &len); ++c) {
  38         const int trusted = (strcmp(name, PEM_STRING_X509_TRUSTED) == 0);
  39         d2i_X509_t d2i = trusted ? d2i_X509_AUX : d2i_X509;
  40         i2d_X509_t i2d = trusted ? i2d_X509_AUX : i2d_X509;
  41         X509 *cert = NULL;
  42         X509 *reuse = NULL;
  43         const unsigned char *p = data;
  44         unsigned char *buf = NULL;
  45         unsigned char *bufp;
  46         long enclen;
  47
  48         if (!trusted
  49             && strcmp(name, PEM_STRING_X509) != 0
  50             && strcmp(name, PEM_STRING_X509_OLD) != 0) {
  51             TEST_error("unexpected PEM object: %s", name);
  52             err = 1;
  53             goto next;
  54         }
  55         cert = d2i(NULL, &p, len);
  56
  57         if (cert == NULL || (p - data) != len) {
  58             TEST_error("error parsing input %s", name);
  59             err = 1;
  60             goto next;
  61         }
  62
  63         /* Test traditional 2-pass encoding into caller allocated buffer */
  64         enclen = i2d(cert, NULL);
  65         if (len != enclen) {
  66             TEST_error("encoded length %ld of %s != input length %ld",
  67                        enclen, name, len);
  68             err = 1;
  69             goto next;
  70         }
  71         if ((buf = bufp = OPENSSL_malloc(len)) == NULL) {
  72             TEST_perror("malloc");
  73             err = 1;
  74             goto next;
  75         }
  76         enclen = i2d(cert, &bufp);
  77         if (len != enclen) {
  78             TEST_error("encoded length %ld of %s != input length %ld",
  79                        enclen, name, len);
  80             err = 1;
  81             goto next;
  82         }
  83         enclen = (long) (bufp - buf);
  84         if (enclen != len) {
  85             TEST_error("unexpected buffer position after encoding %s", name);
  86             err = 1;
  87             goto next;
  88         }
  89         if (memcmp(buf, data, len) != 0) {
  90             TEST_error("encoded content of %s does not match input", name);
  91             err = 1;
  92             goto next;
  93         }
  94         p = buf;
  95         reuse = d2i(NULL, &p, enclen);
  96         if (reuse == NULL) {
  97             TEST_error("second d2i call failed for %s", name);
  98             err = 1;
  99             goto next;
 100         }
 101         err = X509_cmp(reuse, cert);
 102         if (err != 0) {
 103             TEST_error("X509_cmp for %s resulted in %d", name, err);
 104             err = 1;
 105             goto next;
 106         }
 107         OPENSSL_free(buf);
 108         buf = NULL;
 109
 110         /* Test 1-pass encoding into library allocated buffer */
 111         enclen = i2d(cert, &buf);
 112         if (len != enclen) {
 113             TEST_error("encoded length %ld of %s != input length %ld",
 114                        enclen, name, len);
 115             err = 1;
 116             goto next;
 117         }
 118         if (memcmp(buf, data, len) != 0) {
 119             TEST_error("encoded content of %s does not match input", name);
 120             err = 1;
 121             goto next;
 122         }
 123
 124         if (trusted) {
 125             /* Encode just the cert and compare with initial encoding */
 126             OPENSSL_free(buf);
 127             buf = NULL;
 128
 129             /* Test 1-pass encoding into library allocated buffer */
 130             enclen = i2d(cert, &buf);
 131             if (enclen > len) {
 132                 TEST_error("encoded length %ld of %s > input length %ld",
 133                            enclen, name, len);
 134                 err = 1;
 135                 goto next;
 136             }
 137             if (memcmp(buf, data, enclen) != 0) {
 138                 TEST_error("encoded cert content does not match input");
 139                 err = 1;
 140                 goto next;
 141             }
 142         }
 143
 144         /*
 145          * If any of these were null, PEM_read() would have failed.
 146          */
 147     next:
 148         X509_free(cert);
 149         X509_free(reuse);
 150         OPENSSL_free(buf);
 151         OPENSSL_free(name);
 152         OPENSSL_free(header);
 153         OPENSSL_free(data);
 154     }
 155     BIO_free(fp);
 156
 157     if (ERR_GET_REASON(ERR_peek_last_error()) == PEM_R_NO_START_LINE) {
 158         /* Reached end of PEM file */
 159         if (c > 0) {
 160             ERR_clear_error();
 161             return 1;
 162         }
 163     }
 164
 165     /* Some other PEM read error */
 166     return 0;
 167 }
 168
 169 OPT_TEST_DECLARE_USAGE("certfile...\n")
 170
 171 int setup_tests(void)
 172 {
 173     size_t n;
 174
 175     if (!test_skip_common_options()) {
 176         TEST_error("Error parsing test options\n");
 177         return 0;
 178     }
 179
 180     n = test_get_argument_count();
 181     if (n == 0)
 182         return 0;
 183
 184     ADD_ALL_TESTS(test_certs, (int)n);
 185     return 1;
 186 }