diff options
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/examples/Makefile.inc | 3 | ||||
| -rw-r--r-- | docs/examples/usercertinmem.c | 211 |
2 files changed, 213 insertions, 1 deletions
diff --git a/docs/examples/Makefile.inc b/docs/examples/Makefile.inc index 2ce561305..124e73add 100644 --- a/docs/examples/Makefile.inc +++ b/docs/examples/Makefile.inc @@ -5,7 +5,8 @@ check_PROGRAMS = 10-at-a-time anyauthput cookie_interface debug fileupload \ persistant post-callback postit2 sepheaders simple simplepost simplessl \ sendrecv httpcustomheader certinfo chkspeed ftpgetinfo ftp-wildcard \ smtp-multi simplesmtp smtp-tls rtsp externalsocket resolve \ - progressfunc pop3s pop3slist imap url2file sftpget ftpsget + progressfunc pop3s pop3slist imap url2file sftpget ftpsget \ + usercertinmem # These examples require external dependencies that may not be commonly # available on POSIX systems, so don't bother attempting to compile them here. diff --git a/docs/examples/usercertinmem.c b/docs/examples/usercertinmem.c new file mode 100644 index 000000000..99740fdce --- /dev/null +++ b/docs/examples/usercertinmem.c @@ -0,0 +1,211 @@ +/*************************************************************************** + * _ _ ____ _ + * Project ___| | | | _ \| | + * / __| | | | |_) | | + * | (__| |_| | _ <| |___ + * \___|\___/|_| \_\_____| + * + * Copyright (C) 2013, 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 http://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. + * + ***************************************************************************/ +/* Example using an in memory PEM user certificate and RSA key to retrieve an + * https page. + * Written by Ishan SinghLevett, based on Theo Borm's cacertinmem.c. + * Note this example does not use a CA certificate, however one should be used + * if you want a properly secure connection + */ + +#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"); + } + + + /* all set to go */ + return CURLE_OK ; +} + +int main(void) +{ + CURL *ch; + CURLcode rv; + + rv = curl_global_init(CURL_GLOBAL_ALL); + ch = curl_easy_init(); + rv = curl_easy_setopt(ch,CURLOPT_VERBOSE, 0L); + rv = curl_easy_setopt(ch,CURLOPT_HEADER, 0L); + rv = curl_easy_setopt(ch,CURLOPT_NOPROGRESS, 1L); + rv = curl_easy_setopt(ch,CURLOPT_NOSIGNAL, 1L); + rv = curl_easy_setopt(ch,CURLOPT_WRITEFUNCTION, *writefunction); + rv = curl_easy_setopt(ch,CURLOPT_WRITEDATA, stdout); + rv = curl_easy_setopt(ch,CURLOPT_HEADERFUNCTION, *writefunction); + rv = curl_easy_setopt(ch,CURLOPT_WRITEHEADER, stderr); + rv = curl_easy_setopt(ch,CURLOPT_SSLCERTTYPE,"PEM"); + + /* both VERIFYPEER and VERIFYHOST are set to 0 in this case because there is + no CA certificate*/ + + rv = curl_easy_setopt(ch,CURLOPT_SSL_VERIFYPEER, 0L); + rv = curl_easy_setopt(ch,CURLOPT_SSL_VERIFYHOST, 0L); + rv = curl_easy_setopt(ch, CURLOPT_URL, "https://www.example.com/"); + rv = 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 + */ + rv = 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; +} |