/*************************************************************************** * _ _ ____ _ * Project ___| | | | _ \| | * / __| | | | |_) | | * | (__| |_| | _ <| |___ * \___|\___/|_| \_\_____| * * Copyright (C) 2013 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al. * * This software is licensed as described in the file COPYING, which * you should have received as part of this distribution. The terms * are also available at https://curl.haxx.se/docs/copyright.html. * * You may opt to use, copy, modify, merge, publish, distribute and/or sell * copies of the Software, and permit persons to whom the Software is * furnished to do so, under the terms of the COPYING file. * * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY * KIND, either express or implied. * ***************************************************************************/ /* <DESC> * Use an in-memory user certificate and RSA key and retrieve an https page. * </DESC> */ /* Written by Ishan SinghLevett, based on Theo Borm's cacertinmem.c. * Note that to maintain simplicity this example does not use a CA certificate * for peer verification. However, some form of peer verification * must be used in real circumstances when a secure connection is required. */ #include <openssl/ssl.h> #include <openssl/x509.h> #include <openssl/pem.h> #include <curl/curl.h> #include <stdio.h> static size_t writefunction(void *ptr, size_t size, size_t nmemb, void *stream) { fwrite(ptr, size, nmemb, stream); return (nmemb*size); } static CURLcode sslctx_function(CURL *curl, void *sslctx, void *parm) { X509 *cert = NULL; BIO *bio = NULL; BIO *kbio = NULL; RSA *rsa = NULL; int ret; const char *mypem = /* www.cacert.org */ "-----BEGIN CERTIFICATE-----\n"\ "MIIHPTCCBSWgAwIBAgIBADANBgkqhkiG9w0BAQQFADB5MRAwDgYDVQQKEwdSb290\n"\ "IENBMR4wHAYDVQQLExVodHRwOi8vd3d3LmNhY2VydC5vcmcxIjAgBgNVBAMTGUNB\n"\ "IENlcnQgU2lnbmluZyBBdXRob3JpdHkxITAfBgkqhkiG9w0BCQEWEnN1cHBvcnRA\n"\ "Y2FjZXJ0Lm9yZzAeFw0wMzAzMzAxMjI5NDlaFw0zMzAzMjkxMjI5NDlaMHkxEDAO\n"\ "BgNVBAoTB1Jvb3QgQ0ExHjAcBgNVBAsTFWh0dHA6Ly93d3cuY2FjZXJ0Lm9yZzEi\n"\ "MCAGA1UEAxMZQ0EgQ2VydCBTaWduaW5nIEF1dGhvcml0eTEhMB8GCSqGSIb3DQEJ\n"\ "ARYSc3VwcG9ydEBjYWNlcnQub3JnMIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIIC\n"\ "CgKCAgEAziLA4kZ97DYoB1CW8qAzQIxL8TtmPzHlawI229Z89vGIj053NgVBlfkJ\n"\ "8BLPRoZzYLdufujAWGSuzbCtRRcMY/pnCujW0r8+55jE8Ez64AO7NV1sId6eINm6\n"\ "zWYyN3L69wj1x81YyY7nDl7qPv4coRQKFWyGhFtkZip6qUtTefWIonvuLwphK42y\n"\ "fk1WpRPs6tqSnqxEQR5YYGUFZvjARL3LlPdCfgv3ZWiYUQXw8wWRBB0bF4LsyFe7\n"\ "w2t6iPGwcswlWyCR7BYCEo8y6RcYSNDHBS4CMEK4JZwFaz+qOqfrU0j36NK2B5jc\n"\ "G8Y0f3/JHIJ6BVgrCFvzOKKrF11myZjXnhCLotLddJr3cQxyYN/Nb5gznZY0dj4k\n"\ "epKwDpUeb+agRThHqtdB7Uq3EvbXG4OKDy7YCbZZ16oE/9KTfWgu3YtLq1i6L43q\n"\ "laegw1SJpfvbi1EinbLDvhG+LJGGi5Z4rSDTii8aP8bQUWWHIbEZAWV/RRyH9XzQ\n"\ "QUxPKZgh/TMfdQwEUfoZd9vUFBzugcMd9Zi3aQaRIt0AUMyBMawSB3s42mhb5ivU\n"\ "fslfrejrckzzAeVLIL+aplfKkQABi6F1ITe1Yw1nPkZPcCBnzsXWWdsC4PDSy826\n"\ "YreQQejdIOQpvGQpQsgi3Hia/0PsmBsJUUtaWsJx8cTLc6nloQsCAwEAAaOCAc4w\n"\ "ggHKMB0GA1UdDgQWBBQWtTIb1Mfz4OaO873SsDrusjkY0TCBowYDVR0jBIGbMIGY\n"\ "gBQWtTIb1Mfz4OaO873SsDrusjkY0aF9pHsweTEQMA4GA1UEChMHUm9vdCBDQTEe\n"\ "MBwGA1UECxMVaHR0cDovL3d3dy5jYWNlcnQub3JnMSIwIAYDVQQDExlDQSBDZXJ0\n"\ "IFNpZ25pbmcgQXV0aG9yaXR5MSEwHwYJKoZIhvcNAQkBFhJzdXBwb3J0QGNhY2Vy\n"\ "dC5vcmeCAQAwDwYDVR0TAQH/BAUwAwEB/zAyBgNVHR8EKzApMCegJaAjhiFodHRw\n"\ "czovL3d3dy5jYWNlcnQub3JnL3Jldm9rZS5jcmwwMAYJYIZIAYb4QgEEBCMWIWh0\n"\ "dHBzOi8vd3d3LmNhY2VydC5vcmcvcmV2b2tlLmNybDA0BglghkgBhvhCAQgEJxYl\n"\ "aHR0cDovL3d3dy5jYWNlcnQub3JnL2luZGV4LnBocD9pZD0xMDBWBglghkgBhvhC\n"\ "AQ0ESRZHVG8gZ2V0IHlvdXIgb3duIGNlcnRpZmljYXRlIGZvciBGUkVFIGhlYWQg\n"\ "b3ZlciB0byBodHRwOi8vd3d3LmNhY2VydC5vcmcwDQYJKoZIhvcNAQEEBQADggIB\n"\ "ACjH7pyCArpcgBLKNQodgW+JapnM8mgPf6fhjViVPr3yBsOQWqy1YPaZQwGjiHCc\n"\ "nWKdpIevZ1gNMDY75q1I08t0AoZxPuIrA2jxNGJARjtT6ij0rPtmlVOKTV39O9lg\n"\ "18p5aTuxZZKmxoGCXJzN600BiqXfEVWqFcofN8CCmHBh22p8lqOOLlQ+TyGpkO/c\n"\ "gr/c6EWtTZBzCDyUZbAEmXZ/4rzCahWqlwQ3JNgelE5tDlG+1sSPypZt90Pf6DBl\n"\ "Jzt7u0NDY8RD97LsaMzhGY4i+5jhe1o+ATc7iwiwovOVThrLm82asduycPAtStvY\n"\ "sONvRUgzEv/+PDIqVPfE94rwiCPCR/5kenHA0R6mY7AHfqQv0wGP3J8rtsYIqQ+T\n"\ "SCX8Ev2fQtzzxD72V7DX3WnRBnc0CkvSyqD/HMaMyRa+xMwyN2hzXwj7UfdJUzYF\n"\ "CpUCTPJ5GhD22Dp1nPMd8aINcGeGG7MW9S/lpOt5hvk9C8JzC6WZrG/8Z7jlLwum\n"\ "GCSNe9FINSkYQKyTYOGWhlC0elnYjyELn8+CkcY7v2vcB5G5l1YjqrZslMZIBjzk\n"\ "zk6q5PYvCdxTby78dOs6Y5nCpqyJvKeyRKANihDjbPIky/qbn3BHLt4Ui9SyIAmW\n"\ "omTxJBzcoTWcFbLUvFUufQb1nA5V9FrWk9p2rSVzTMVD\n"\ "-----END CERTIFICATE-----\n"; /*replace the XXX with the actual RSA key*/ const char *mykey = "-----BEGIN RSA PRIVATE KEY-----\n"\ "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX\n"\ "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX\n"\ "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX\n"\ "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX\n"\ "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX\n"\ "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX\n"\ "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX\n"\ "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX\n"\ "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX\n"\ "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX\n"\ "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX\n"\ "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX\n"\ "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX\n"\ "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX\n"\ "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX\n"\ "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX\n"\ "-----END RSA PRIVATE KEY-----\n"; (void)curl; /* avoid warnings */ (void)parm; /* avoid warnings */ /* get a BIO */ bio = BIO_new_mem_buf((char *)mypem, -1); if(bio == NULL) { printf("BIO_new_mem_buf failed\n"); } /* use it to read the PEM formatted certificate from memory into an X509 * structure that SSL can use */ cert = PEM_read_bio_X509(bio, NULL, 0, NULL); if(cert == NULL) { printf("PEM_read_bio_X509 failed...\n"); } /*tell SSL to use the X509 certificate*/ ret = SSL_CTX_use_certificate((SSL_CTX*)sslctx, cert); if(ret != 1) { printf("Use certificate failed\n"); } /*create a bio for the RSA key*/ kbio = BIO_new_mem_buf((char *)mykey, -1); if(kbio == NULL) { printf("BIO_new_mem_buf failed\n"); } /*read the key bio into an RSA object*/ rsa = PEM_read_bio_RSAPrivateKey(kbio, NULL, 0, NULL); if(rsa == NULL) { printf("Failed to create key bio\n"); } /*tell SSL to use the RSA key from memory*/ ret = SSL_CTX_use_RSAPrivateKey((SSL_CTX*)sslctx, rsa); if(ret != 1) { printf("Use Key failed\n"); } /* free resources that have been allocated by openssl functions */ if(bio) BIO_free(bio); if(kbio) BIO_free(kbio); if(rsa) RSA_free(rsa); if(cert) X509_free(cert); /* all set to go */ return CURLE_OK; } int main(void) { CURL *ch; CURLcode rv; curl_global_init(CURL_GLOBAL_ALL); ch = curl_easy_init(); curl_easy_setopt(ch, CURLOPT_VERBOSE, 0L); curl_easy_setopt(ch, CURLOPT_HEADER, 0L); curl_easy_setopt(ch, CURLOPT_NOPROGRESS, 1L); curl_easy_setopt(ch, CURLOPT_NOSIGNAL, 1L); curl_easy_setopt(ch, CURLOPT_WRITEFUNCTION, writefunction); curl_easy_setopt(ch, CURLOPT_WRITEDATA, stdout); curl_easy_setopt(ch, CURLOPT_HEADERFUNCTION, writefunction); curl_easy_setopt(ch, CURLOPT_HEADERDATA, stderr); curl_easy_setopt(ch, CURLOPT_SSLCERTTYPE, "PEM"); /* both VERIFYPEER and VERIFYHOST are set to 0 in this case because there is no CA certificate*/ curl_easy_setopt(ch, CURLOPT_SSL_VERIFYPEER, 0L); curl_easy_setopt(ch, CURLOPT_SSL_VERIFYHOST, 0L); curl_easy_setopt(ch, CURLOPT_URL, "https://www.example.com/"); curl_easy_setopt(ch, CURLOPT_SSLKEYTYPE, "PEM"); /* first try: retrieve page without user certificate and key -> will fail */ rv = curl_easy_perform(ch); if(rv == CURLE_OK) { printf("*** transfer succeeded ***\n"); } else { printf("*** transfer failed ***\n"); } /* second try: retrieve page using user certificate and key -> will succeed * load the certificate and key by installing a function doing the necessary * "modifications" to the SSL CONTEXT just before link init */ curl_easy_setopt(ch, CURLOPT_SSL_CTX_FUNCTION, *sslctx_function); rv = curl_easy_perform(ch); if(rv == CURLE_OK) { printf("*** transfer succeeded ***\n"); } else { printf("*** transfer failed ***\n"); } curl_easy_cleanup(ch); curl_global_cleanup(); return rv; }