mirror of
https://github.com/moparisthebest/curl
synced 2024-12-22 16:18:48 -05:00
3a6563d668
All plain C examples now (mostly) adhere to the curl code style. While they are only examples, they had diverted so much and contained all sorts of different mixed code styles by now. Having them use a unified style helps users and readability. Also, as they get copy-and-pasted widely by users, making sure they're clean and nice is a good idea. 573 checksrc warnings were addressed.
228 lines
9.0 KiB
C
228 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 - 2016, 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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/* Example using an in memory PEM user certificate and RSA key to retrieve an
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* 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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