cacertinmem.c 7.2 KB

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  1. /***************************************************************************
  2. * _ _ ____ _
  3. * Project ___| | | | _ \| |
  4. * / __| | | | |_) | |
  5. * | (__| |_| | _ <| |___
  6. * \___|\___/|_| \_\_____|
  7. *
  8. * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
  9. *
  10. * This software is licensed as described in the file COPYING, which
  11. * you should have received as part of this distribution. The terms
  12. * are also available at https://curl.se/docs/copyright.html.
  13. *
  14. * You may opt to use, copy, modify, merge, publish, distribute and/or sell
  15. * copies of the Software, and permit persons to whom the Software is
  16. * furnished to do so, under the terms of the COPYING file.
  17. *
  18. * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  19. * KIND, either express or implied.
  20. *
  21. * SPDX-License-Identifier: curl
  22. *
  23. ***************************************************************************/
  24. /* <DESC>
  25. * CA cert in memory with OpenSSL to get an HTTPS page.
  26. * </DESC>
  27. */
  28. #include <openssl/err.h>
  29. #include <openssl/ssl.h>
  30. #include <curl/curl.h>
  31. #include <stdio.h>
  32. static size_t writefunction(void *ptr, size_t size, size_t nmemb, void *stream)
  33. {
  34. fwrite(ptr, size, nmemb, (FILE *)stream);
  35. return (nmemb*size);
  36. }
  37. static CURLcode sslctx_function(CURL *curl, void *sslctx, void *parm)
  38. {
  39. CURLcode rv = CURLE_ABORTED_BY_CALLBACK;
  40. /** This example uses two (fake) certificates **/
  41. static const char mypem[] =
  42. "-----BEGIN CERTIFICATE-----\n"
  43. "MIIH0zCCBbugAwIBAgIIXsO3pkN/pOAwDQYJKoZIhvcNAQEFBQAwQjESMBAGA1UE\n"
  44. "AwwJQUNDVlJBSVoxMRAwDgYDVQQLDAdQS0lBQ0NWMQ0wCwYDVQQKDARBQ0NWMQsw\n"
  45. "CQYDVQQGEwJFUzAeFw0xMTA1MDUwOTM3MzdaFw0zMDEyMzEwOTM3MzdaMEIxEjAQ\n"
  46. "BgNVBAMMCUFDQ1ZSQUlaMTEQMA4GA1UECwwHUEtJQUNDVjENMAsGA1UECgwEQUND\n"
  47. "VjELMAkGA1UEBhMCRVMwggIiMA0GCSqGSIb3DQEBAQUAA4ICDwAwggIKAoICAQCb\n"
  48. "qau/YUqXry+XZpp0X9DZlv3P4uRm7x8fRzPCRKPfmt4ftVTdFXxpNRFvu8gMjmoY\n"
  49. "HtiP2Ra8EEg2XPBjs5BaXCQ316PWywlxufEBcoSwfdtNgM3802/J+Nq2DoLSRYWo\n"
  50. "G2ioPej0RGy9ocLLA76MPhMAhN9KSMDjIgro6TenGEyxCQ0jVn8ETdkXhBilyNpA\n"
  51. "0KIV9VMJcRz/RROE5iZe+OCIHAr8Fraocwa48GOEAqDGWuzndN9wrqODJerWx5eH\n"
  52. "k6fGioozl2A3ED6XPm4pFdahD9GILBKfb6qkxkLrQaLjlUPTAYVtjrs78yM2x/47\n"
  53. "JyCpZET/LtZ1qmxNYEAZSUNUY9rizLpm5U9EelvZaoErQNV/+QEnWCzI7UiRfD+m\n"
  54. "AM/EKXMRNt6GGT6d7hmKG9Ww7Y49nCrADdg9ZuM8Db3VlFzi4qc1GwQA9j9ajepD\n"
  55. "vV+JHanBsMyZ4k0ACtrJJ1vnE5Bc5PUzolVt3OAJTS+xJlsndQAJxGJ3KQhfnlms\n"
  56. "tn6tn1QwIgPBHnFk/vk4CpYY3QIUrCPLBhwepH2NDd4nQeit2hW3sCPdK6jT2iWH\n"
  57. "7ehVRE2I9DZ+hJp4rPcOVkkO1jMl1oRQQmwgEh0q1b688nCBpHBgvgW1m54ERL5h\n"
  58. "I6zppSSMEYCUWqKiuUnSwdzRp+0xESyeGabu4VXhwOrPDYTkF7eifKXeVSUG7szA\n"
  59. "h1xA2syVP1XgNce4hL60Xc16gwFy7ofmXx2utYXGJt/mwZrpHgJHnyqobalbz+xF\n"
  60. "d3+YJ5oyXSrjhO7FmGYvliAd3djDJ9ew+f7Zfc3Qn48LFFhRny+Lwzgt3uiP1o2H\n"
  61. "pPVWQxaZLPSkVrQ0uGE3ycJYgBugl6H8WY3pEfbRD0tVNEYqi4Y7\n"
  62. "-----END CERTIFICATE-----\n"
  63. "-----BEGIN CERTIFICATE-----\n"
  64. "MIIFtTCCA52gAwIBAgIIYY3HhjsBggUwDQYJKoZIhvcNAQEFBQAwRDEWMBQGA1UE\n"
  65. "AwwNQUNFRElDT00gUm9vdDEMMAoGA1UECwwDUEtJMQ8wDQYDVQQKDAZFRElDT00x\n"
  66. "CzAJBgNVBAYTAkVTMB4XDTA4MDQxODE2MjQyMloXDTI4MDQxMzE2MjQyMlowRDEW\n"
  67. "MBQGA1UEAwwNQUNFRElDT00gUm9vdDEMMAoGA1UECwwDUEtJMQ8wDQYDVQQKDAZF\n"
  68. "RElDT00xCzAJBgNVBAYTAkVTMIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKC\n"
  69. "AgEA/5KV4WgGdrQsyFhIyv2AVClVYyT/kGWbEHV7w2rbYgIB8hiGtXxaOLHkWLn7\n"
  70. "09gtn70yN78sFW2+tfQh0hOR2QetAQXW8713zl9CgQr5auODAKgrLlUTY4HKRxx7\n"
  71. "XBZXehuDYAQ6PmXDzQHe3qTWDLqO3tkE7hdWIpuPY/1NFgu3e3eM+SW10W2ZEi5P\n"
  72. "gvoFNTPhNahXwOf9jU8/kzJPeGYDdwdY6ZXIfj7QeQCM8htRM5u8lOk6e25SLTKe\n"
  73. "I6RF+7YuE7CLGLHdztUdp0J/Vb77W7tH1PwkzQSulgUV1qzOMPPKC8W64iLgpq0i\n"
  74. "5ALudBF/TP94HTXa5gI06xgSYXcGCRZj6hitoocf8seACQl1ThCojz2GuHURwCRi\n"
  75. "ipZ7SkXp7FnFvmuD5uHorLUwHv4FB4D54SMNUI8FmP8sX+g7tq3PgbUhh8oIKiMn\n"
  76. "MCArz+2UW6yyetLHKKGKC5tNSixthT8Jcjxn4tncB7rrZXtaAWPWkFtPF2Y9fwsZ\n"
  77. "o5NjEFIqnxQWWOLcpfShFosOkYuByptZ+thrkQdlVV9SH686+5DdaaVbnG0OLLb6\n"
  78. "zqylfDJKZ0DcMDQj3dcEI2bw/FWAp/tmGYI1Z2JwOV5vx+qQQEQIHriy1tvuWacN\n"
  79. "GHk0vFQYXlPKNFHtRQrmjseCNj6nOGOpMCwXEGCSn1WHElkQwg9naRHMTh5+Spqt\n"
  80. "r0CodaxWkHS4oJyleW/c6RrIaQXpuvoDs3zk4E7Czp3otkYNbn5XOmeUwssfnHdK\n"
  81. "Z05phkOTOPu220+DkdRgfks+KzgHVZhepA==\n"
  82. "-----END CERTIFICATE-----\n";
  83. BIO *cbio = BIO_new_mem_buf(mypem, sizeof(mypem));
  84. X509_STORE *cts = SSL_CTX_get_cert_store((SSL_CTX *)sslctx);
  85. int i;
  86. STACK_OF(X509_INFO) *inf;
  87. (void)curl;
  88. (void)parm;
  89. if(!cts || !cbio) {
  90. return rv;
  91. }
  92. inf = PEM_X509_INFO_read_bio(cbio, NULL, NULL, NULL);
  93. if(!inf) {
  94. BIO_free(cbio);
  95. return rv;
  96. }
  97. for(i = 0; i < sk_X509_INFO_num(inf); i++) {
  98. X509_INFO *itmp = sk_X509_INFO_value(inf, i);
  99. if(itmp->x509) {
  100. X509_STORE_add_cert(cts, itmp->x509);
  101. }
  102. if(itmp->crl) {
  103. X509_STORE_add_crl(cts, itmp->crl);
  104. }
  105. }
  106. sk_X509_INFO_pop_free(inf, X509_INFO_free);
  107. BIO_free(cbio);
  108. rv = CURLE_OK;
  109. return rv;
  110. }
  111. int main(void)
  112. {
  113. CURL *ch;
  114. CURLcode rv;
  115. curl_global_init(CURL_GLOBAL_ALL);
  116. ch = curl_easy_init();
  117. curl_easy_setopt(ch, CURLOPT_VERBOSE, 0L);
  118. curl_easy_setopt(ch, CURLOPT_HEADER, 0L);
  119. curl_easy_setopt(ch, CURLOPT_NOPROGRESS, 1L);
  120. curl_easy_setopt(ch, CURLOPT_NOSIGNAL, 1L);
  121. curl_easy_setopt(ch, CURLOPT_WRITEFUNCTION, writefunction);
  122. curl_easy_setopt(ch, CURLOPT_WRITEDATA, stdout);
  123. curl_easy_setopt(ch, CURLOPT_HEADERFUNCTION, writefunction);
  124. curl_easy_setopt(ch, CURLOPT_HEADERDATA, stderr);
  125. curl_easy_setopt(ch, CURLOPT_SSLCERTTYPE, "PEM");
  126. curl_easy_setopt(ch, CURLOPT_SSL_VERIFYPEER, 1L);
  127. curl_easy_setopt(ch, CURLOPT_URL, "https://www.example.com/");
  128. /* Turn off the default CA locations, otherwise libcurl loads CA
  129. * certificates from the locations that were detected/specified at
  130. * build-time
  131. */
  132. curl_easy_setopt(ch, CURLOPT_CAINFO, NULL);
  133. curl_easy_setopt(ch, CURLOPT_CAPATH, NULL);
  134. /* first try: retrieve page without ca certificates -> should fail
  135. * unless libcurl was built --with-ca-fallback enabled at build-time
  136. */
  137. rv = curl_easy_perform(ch);
  138. if(rv == CURLE_OK)
  139. printf("*** transfer succeeded ***\n");
  140. else
  141. printf("*** transfer failed ***\n");
  142. /* use a fresh connection (optional) this option seriously impacts
  143. * performance of multiple transfers but it is necessary order to
  144. * demonstrate this example. recall that the ssl ctx callback is only called
  145. * _before_ an SSL connection is established, therefore it does not affect
  146. * existing verified SSL connections already in the connection cache
  147. * associated with this handle. normally you would set the ssl ctx function
  148. * before making any transfers, and not use this option.
  149. */
  150. curl_easy_setopt(ch, CURLOPT_FRESH_CONNECT, 1L);
  151. /* second try: retrieve page using cacerts' certificate -> succeeds to load
  152. * the certificate by installing a function doing the necessary
  153. * "modifications" to the SSL CONTEXT just before link init
  154. */
  155. curl_easy_setopt(ch, CURLOPT_SSL_CTX_FUNCTION, sslctx_function);
  156. rv = curl_easy_perform(ch);
  157. if(rv == CURLE_OK)
  158. printf("*** transfer succeeded ***\n");
  159. else
  160. printf("*** transfer failed ***\n");
  161. curl_easy_cleanup(ch);
  162. curl_global_cleanup();
  163. return rv;
  164. }