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