| /*************************************************************************** |
| * _ _ ____ _ |
| * Project ___| | | | _ \| | |
| * / __| | | | |_) | | |
| * | (__| |_| | _ <| |___ |
| * \___|\___/|_| \_\_____| |
| * |
| * Copyright (C) 2013 - 2021, Daniel Stenberg, <[email protected]>, 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.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) { |
| 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) { |
| 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) { |
| 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) { |
| 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; |
| } |