1 /*************************************************************************** 2 * _ _ ____ _ 3 * Project ___| | | | _ \| | 4 * / __| | | | |_) | | 5 * | (__| |_| | _ <| |___ 6 * \___|\___/|_| \_\_____| 7 * 8 * Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel (at) 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.haxx.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 ***************************************************************************/ 22 /* <DESC> 23 * CA cert in memory with OpenSSL to get a HTTPS page. 24 * </DESC> 25 */ 26 27 #include <openssl/ssl.h> 28 #include <curl/curl.h> 29 #include <stdio.h> 30 31 size_t writefunction(void *ptr, size_t size, size_t nmemb, void *stream) 32 { 33 fwrite(ptr, size, nmemb, stream); 34 return (nmemb*size); 35 } 36 37 static CURLcode sslctx_function(CURL * curl, void * sslctx, void * parm) 38 { 39 X509_STORE * store; 40 X509 * cert=NULL; 41 BIO * bio; 42 char * mypem = /* www.cacert.org */ 43 "-----BEGIN CERTIFICATE-----\n"\ 44 "MIIHPTCCBSWgAwIBAgIBADANBgkqhkiG9w0BAQQFADB5MRAwDgYDVQQKEwdSb290\n"\ 45 "IENBMR4wHAYDVQQLExVodHRwOi8vd3d3LmNhY2VydC5vcmcxIjAgBgNVBAMTGUNB\n"\ 46 "IENlcnQgU2lnbmluZyBBdXRob3JpdHkxITAfBgkqhkiG9w0BCQEWEnN1cHBvcnRA\n"\ 47 "Y2FjZXJ0Lm9yZzAeFw0wMzAzMzAxMjI5NDlaFw0zMzAzMjkxMjI5NDlaMHkxEDAO\n"\ 48 "BgNVBAoTB1Jvb3QgQ0ExHjAcBgNVBAsTFWh0dHA6Ly93d3cuY2FjZXJ0Lm9yZzEi\n"\ 49 "MCAGA1UEAxMZQ0EgQ2VydCBTaWduaW5nIEF1dGhvcml0eTEhMB8GCSqGSIb3DQEJ\n"\ 50 "ARYSc3VwcG9ydEBjYWNlcnQub3JnMIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIIC\n"\ 51 "CgKCAgEAziLA4kZ97DYoB1CW8qAzQIxL8TtmPzHlawI229Z89vGIj053NgVBlfkJ\n"\ 52 "8BLPRoZzYLdufujAWGSuzbCtRRcMY/pnCujW0r8+55jE8Ez64AO7NV1sId6eINm6\n"\ 53 "zWYyN3L69wj1x81YyY7nDl7qPv4coRQKFWyGhFtkZip6qUtTefWIonvuLwphK42y\n"\ 54 "fk1WpRPs6tqSnqxEQR5YYGUFZvjARL3LlPdCfgv3ZWiYUQXw8wWRBB0bF4LsyFe7\n"\ 55 "w2t6iPGwcswlWyCR7BYCEo8y6RcYSNDHBS4CMEK4JZwFaz+qOqfrU0j36NK2B5jc\n"\ 56 "G8Y0f3/JHIJ6BVgrCFvzOKKrF11myZjXnhCLotLddJr3cQxyYN/Nb5gznZY0dj4k\n"\ 57 "epKwDpUeb+agRThHqtdB7Uq3EvbXG4OKDy7YCbZZ16oE/9KTfWgu3YtLq1i6L43q\n"\ 58 "laegw1SJpfvbi1EinbLDvhG+LJGGi5Z4rSDTii8aP8bQUWWHIbEZAWV/RRyH9XzQ\n"\ 59 "QUxPKZgh/TMfdQwEUfoZd9vUFBzugcMd9Zi3aQaRIt0AUMyBMawSB3s42mhb5ivU\n"\ 60 "fslfrejrckzzAeVLIL+aplfKkQABi6F1ITe1Yw1nPkZPcCBnzsXWWdsC4PDSy826\n"\ 61 "YreQQejdIOQpvGQpQsgi3Hia/0PsmBsJUUtaWsJx8cTLc6nloQsCAwEAAaOCAc4w\n"\ 62 "ggHKMB0GA1UdDgQWBBQWtTIb1Mfz4OaO873SsDrusjkY0TCBowYDVR0jBIGbMIGY\n"\ 63 "gBQWtTIb1Mfz4OaO873SsDrusjkY0aF9pHsweTEQMA4GA1UEChMHUm9vdCBDQTEe\n"\ 64 "MBwGA1UECxMVaHR0cDovL3d3dy5jYWNlcnQub3JnMSIwIAYDVQQDExlDQSBDZXJ0\n"\ 65 "IFNpZ25pbmcgQXV0aG9yaXR5MSEwHwYJKoZIhvcNAQkBFhJzdXBwb3J0QGNhY2Vy\n"\ 66 "dC5vcmeCAQAwDwYDVR0TAQH/BAUwAwEB/zAyBgNVHR8EKzApMCegJaAjhiFodHRw\n"\ 67 "czovL3d3dy5jYWNlcnQub3JnL3Jldm9rZS5jcmwwMAYJYIZIAYb4QgEEBCMWIWh0\n"\ 68 "dHBzOi8vd3d3LmNhY2VydC5vcmcvcmV2b2tlLmNybDA0BglghkgBhvhCAQgEJxYl\n"\ 69 "aHR0cDovL3d3dy5jYWNlcnQub3JnL2luZGV4LnBocD9pZD0xMDBWBglghkgBhvhC\n"\ 70 "AQ0ESRZHVG8gZ2V0IHlvdXIgb3duIGNlcnRpZmljYXRlIGZvciBGUkVFIGhlYWQg\n"\ 71 "b3ZlciB0byBodHRwOi8vd3d3LmNhY2VydC5vcmcwDQYJKoZIhvcNAQEEBQADggIB\n"\ 72 "ACjH7pyCArpcgBLKNQodgW+JapnM8mgPf6fhjViVPr3yBsOQWqy1YPaZQwGjiHCc\n"\ 73 "nWKdpIevZ1gNMDY75q1I08t0AoZxPuIrA2jxNGJARjtT6ij0rPtmlVOKTV39O9lg\n"\ 74 "18p5aTuxZZKmxoGCXJzN600BiqXfEVWqFcofN8CCmHBh22p8lqOOLlQ+TyGpkO/c\n"\ 75 "gr/c6EWtTZBzCDyUZbAEmXZ/4rzCahWqlwQ3JNgelE5tDlG+1sSPypZt90Pf6DBl\n"\ 76 "Jzt7u0NDY8RD97LsaMzhGY4i+5jhe1o+ATc7iwiwovOVThrLm82asduycPAtStvY\n"\ 77 "sONvRUgzEv/+PDIqVPfE94rwiCPCR/5kenHA0R6mY7AHfqQv0wGP3J8rtsYIqQ+T\n"\ 78 "SCX8Ev2fQtzzxD72V7DX3WnRBnc0CkvSyqD/HMaMyRa+xMwyN2hzXwj7UfdJUzYF\n"\ 79 "CpUCTPJ5GhD22Dp1nPMd8aINcGeGG7MW9S/lpOt5hvk9C8JzC6WZrG/8Z7jlLwum\n"\ 80 "GCSNe9FINSkYQKyTYOGWhlC0elnYjyELn8+CkcY7v2vcB5G5l1YjqrZslMZIBjzk\n"\ 81 "zk6q5PYvCdxTby78dOs6Y5nCpqyJvKeyRKANihDjbPIky/qbn3BHLt4Ui9SyIAmW\n"\ 82 "omTxJBzcoTWcFbLUvFUufQb1nA5V9FrWk9p2rSVzTMVD\n"\ 83 "-----END CERTIFICATE-----\n"; 84 /* get a BIO */ 85 bio=BIO_new_mem_buf(mypem, -1); 86 /* use it to read the PEM formatted certificate from memory into an X509 87 * structure that SSL can use 88 */ 89 PEM_read_bio_X509(bio, &cert, 0, NULL); 90 if(cert == NULL) 91 printf("PEM_read_bio_X509 failed...\n"); 92 93 /* get a pointer to the X509 certificate store (which may be empty!) */ 94 store=SSL_CTX_get_cert_store((SSL_CTX *)sslctx); 95 96 /* add our certificate to this store */ 97 if(X509_STORE_add_cert(store, cert)==0) 98 printf("error adding certificate\n"); 99 100 /* decrease reference counts */ 101 X509_free(cert); 102 BIO_free(bio); 103 104 /* all set to go */ 105 return CURLE_OK; 106 } 107 108 int main(void) 109 { 110 CURL * ch; 111 CURLcode rv; 112 113 rv=curl_global_init(CURL_GLOBAL_ALL); 114 ch=curl_easy_init(); 115 rv=curl_easy_setopt(ch, CURLOPT_VERBOSE, 0L); 116 rv=curl_easy_setopt(ch, CURLOPT_HEADER, 0L); 117 rv=curl_easy_setopt(ch, CURLOPT_NOPROGRESS, 1L); 118 rv=curl_easy_setopt(ch, CURLOPT_NOSIGNAL, 1L); 119 rv=curl_easy_setopt(ch, CURLOPT_WRITEFUNCTION, *writefunction); 120 rv=curl_easy_setopt(ch, CURLOPT_WRITEDATA, stdout); 121 rv=curl_easy_setopt(ch, CURLOPT_HEADERFUNCTION, *writefunction); 122 rv=curl_easy_setopt(ch, CURLOPT_HEADERDATA, stderr); 123 rv=curl_easy_setopt(ch, CURLOPT_SSLCERTTYPE, "PEM"); 124 rv=curl_easy_setopt(ch, CURLOPT_SSL_VERIFYPEER, 1L); 125 rv=curl_easy_setopt(ch, CURLOPT_URL, "https://www.example.com/"); 126 127 /* first try: retrieve page without cacerts' certificate -> will fail 128 */ 129 rv=curl_easy_perform(ch); 130 if(rv==CURLE_OK) 131 printf("*** transfer succeeded ***\n"); 132 else 133 printf("*** transfer failed ***\n"); 134 135 /* second try: retrieve page using cacerts' certificate -> will succeed 136 * load the certificate by installing a function doing the nescessary 137 * "modifications" to the SSL CONTEXT just before link init 138 */ 139 rv=curl_easy_setopt(ch, CURLOPT_SSL_CTX_FUNCTION, *sslctx_function); 140 rv=curl_easy_perform(ch); 141 if(rv==CURLE_OK) 142 printf("*** transfer succeeded ***\n"); 143 else 144 printf("*** transfer failed ***\n"); 145 146 curl_easy_cleanup(ch); 147 curl_global_cleanup(); 148 return rv; 149 } 150