1/*************************************************************************** 2 * _ _ ____ _ 3 * Project ___| | | | _ \| | 4 * / __| | | | |_) | | 5 * | (__| |_| | _ <| |___ 6 * \___|\___/|_| \_\_____| 7 * 8 * Copyright (C) 1998 - 2011, Daniel Stenberg, <daniel@haxx.se>, et al. 9 * 10 * This software is licensed as described in the file COPYING, which 11 * you should have received as part of this distribution. The terms 12 * are also available at http://curl.haxx.se/docs/copyright.html. 13 * 14 * You may opt to use, copy, modify, merge, publish, distribute and/or sell 15 * copies of the Software, and permit persons to whom the Software is 16 * furnished to do so, under the terms of the COPYING file. 17 * 18 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY 19 * KIND, either express or implied. 20 * 21 ***************************************************************************/ 22/* Example using a "in core" PEM certificate to retrieve a https page. 23 * Written by Theo Borm 24 */ 25 26/* on a netBSD system with OPENSSL& LIBCURL installed from 27 * pkgsrc (using default paths) this program can be compiled using: 28 * gcc -I/usr/pkg/include -L/usr/pkg/lib -lcurl -Wl,-R/usr/pkg/lib -lssl 29 * -lcrypto -lz -o curlcacerttest curlcacerttest.c 30 * on other operating systems you may want to change paths to headers 31 * and libraries 32*/ 33#include <openssl/ssl.h> 34#include <curl/curl.h> 35#include <stdio.h> 36 37size_t writefunction( void *ptr, size_t size, size_t nmemb, void *stream) 38{ 39 fwrite(ptr,size,nmemb,stream); 40 return(nmemb*size); 41} 42 43static CURLcode sslctx_function(CURL * curl, void * sslctx, void * parm) 44{ 45 X509_STORE * store; 46 X509 * cert=NULL; 47 BIO * bio; 48 char * mypem = /* www.cacert.org */ 49 "-----BEGIN CERTIFICATE-----\n"\ 50 "MIIHPTCCBSWgAwIBAgIBADANBgkqhkiG9w0BAQQFADB5MRAwDgYDVQQKEwdSb290\n"\ 51 "IENBMR4wHAYDVQQLExVodHRwOi8vd3d3LmNhY2VydC5vcmcxIjAgBgNVBAMTGUNB\n"\ 52 "IENlcnQgU2lnbmluZyBBdXRob3JpdHkxITAfBgkqhkiG9w0BCQEWEnN1cHBvcnRA\n"\ 53 "Y2FjZXJ0Lm9yZzAeFw0wMzAzMzAxMjI5NDlaFw0zMzAzMjkxMjI5NDlaMHkxEDAO\n"\ 54 "BgNVBAoTB1Jvb3QgQ0ExHjAcBgNVBAsTFWh0dHA6Ly93d3cuY2FjZXJ0Lm9yZzEi\n"\ 55 "MCAGA1UEAxMZQ0EgQ2VydCBTaWduaW5nIEF1dGhvcml0eTEhMB8GCSqGSIb3DQEJ\n"\ 56 "ARYSc3VwcG9ydEBjYWNlcnQub3JnMIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIIC\n"\ 57 "CgKCAgEAziLA4kZ97DYoB1CW8qAzQIxL8TtmPzHlawI229Z89vGIj053NgVBlfkJ\n"\ 58 "8BLPRoZzYLdufujAWGSuzbCtRRcMY/pnCujW0r8+55jE8Ez64AO7NV1sId6eINm6\n"\ 59 "zWYyN3L69wj1x81YyY7nDl7qPv4coRQKFWyGhFtkZip6qUtTefWIonvuLwphK42y\n"\ 60 "fk1WpRPs6tqSnqxEQR5YYGUFZvjARL3LlPdCfgv3ZWiYUQXw8wWRBB0bF4LsyFe7\n"\ 61 "w2t6iPGwcswlWyCR7BYCEo8y6RcYSNDHBS4CMEK4JZwFaz+qOqfrU0j36NK2B5jc\n"\ 62 "G8Y0f3/JHIJ6BVgrCFvzOKKrF11myZjXnhCLotLddJr3cQxyYN/Nb5gznZY0dj4k\n"\ 63 "epKwDpUeb+agRThHqtdB7Uq3EvbXG4OKDy7YCbZZ16oE/9KTfWgu3YtLq1i6L43q\n"\ 64 "laegw1SJpfvbi1EinbLDvhG+LJGGi5Z4rSDTii8aP8bQUWWHIbEZAWV/RRyH9XzQ\n"\ 65 "QUxPKZgh/TMfdQwEUfoZd9vUFBzugcMd9Zi3aQaRIt0AUMyBMawSB3s42mhb5ivU\n"\ 66 "fslfrejrckzzAeVLIL+aplfKkQABi6F1ITe1Yw1nPkZPcCBnzsXWWdsC4PDSy826\n"\ 67 "YreQQejdIOQpvGQpQsgi3Hia/0PsmBsJUUtaWsJx8cTLc6nloQsCAwEAAaOCAc4w\n"\ 68 "ggHKMB0GA1UdDgQWBBQWtTIb1Mfz4OaO873SsDrusjkY0TCBowYDVR0jBIGbMIGY\n"\ 69 "gBQWtTIb1Mfz4OaO873SsDrusjkY0aF9pHsweTEQMA4GA1UEChMHUm9vdCBDQTEe\n"\ 70 "MBwGA1UECxMVaHR0cDovL3d3dy5jYWNlcnQub3JnMSIwIAYDVQQDExlDQSBDZXJ0\n"\ 71 "IFNpZ25pbmcgQXV0aG9yaXR5MSEwHwYJKoZIhvcNAQkBFhJzdXBwb3J0QGNhY2Vy\n"\ 72 "dC5vcmeCAQAwDwYDVR0TAQH/BAUwAwEB/zAyBgNVHR8EKzApMCegJaAjhiFodHRw\n"\ 73 "czovL3d3dy5jYWNlcnQub3JnL3Jldm9rZS5jcmwwMAYJYIZIAYb4QgEEBCMWIWh0\n"\ 74 "dHBzOi8vd3d3LmNhY2VydC5vcmcvcmV2b2tlLmNybDA0BglghkgBhvhCAQgEJxYl\n"\ 75 "aHR0cDovL3d3dy5jYWNlcnQub3JnL2luZGV4LnBocD9pZD0xMDBWBglghkgBhvhC\n"\ 76 "AQ0ESRZHVG8gZ2V0IHlvdXIgb3duIGNlcnRpZmljYXRlIGZvciBGUkVFIGhlYWQg\n"\ 77 "b3ZlciB0byBodHRwOi8vd3d3LmNhY2VydC5vcmcwDQYJKoZIhvcNAQEEBQADggIB\n"\ 78 "ACjH7pyCArpcgBLKNQodgW+JapnM8mgPf6fhjViVPr3yBsOQWqy1YPaZQwGjiHCc\n"\ 79 "nWKdpIevZ1gNMDY75q1I08t0AoZxPuIrA2jxNGJARjtT6ij0rPtmlVOKTV39O9lg\n"\ 80 "18p5aTuxZZKmxoGCXJzN600BiqXfEVWqFcofN8CCmHBh22p8lqOOLlQ+TyGpkO/c\n"\ 81 "gr/c6EWtTZBzCDyUZbAEmXZ/4rzCahWqlwQ3JNgelE5tDlG+1sSPypZt90Pf6DBl\n"\ 82 "Jzt7u0NDY8RD97LsaMzhGY4i+5jhe1o+ATc7iwiwovOVThrLm82asduycPAtStvY\n"\ 83 "sONvRUgzEv/+PDIqVPfE94rwiCPCR/5kenHA0R6mY7AHfqQv0wGP3J8rtsYIqQ+T\n"\ 84 "SCX8Ev2fQtzzxD72V7DX3WnRBnc0CkvSyqD/HMaMyRa+xMwyN2hzXwj7UfdJUzYF\n"\ 85 "CpUCTPJ5GhD22Dp1nPMd8aINcGeGG7MW9S/lpOt5hvk9C8JzC6WZrG/8Z7jlLwum\n"\ 86 "GCSNe9FINSkYQKyTYOGWhlC0elnYjyELn8+CkcY7v2vcB5G5l1YjqrZslMZIBjzk\n"\ 87 "zk6q5PYvCdxTby78dOs6Y5nCpqyJvKeyRKANihDjbPIky/qbn3BHLt4Ui9SyIAmW\n"\ 88 "omTxJBzcoTWcFbLUvFUufQb1nA5V9FrWk9p2rSVzTMVD\n"\ 89 "-----END CERTIFICATE-----\n"; 90 /* get a BIO */ 91 bio=BIO_new_mem_buf(mypem, -1); 92 /* use it to read the PEM formatted certificate from memory into an X509 93 * structure that SSL can use 94 */ 95 PEM_read_bio_X509(bio, &cert, 0, NULL); 96 if (cert == NULL) 97 printf("PEM_read_bio_X509 failed...\n"); 98 99 /* get a pointer to the X509 certificate store (which may be empty!) */ 100 store=SSL_CTX_get_cert_store((SSL_CTX *)sslctx); 101 102 /* add our certificate to this store */ 103 if (X509_STORE_add_cert(store, cert)==0) 104 printf("error adding certificate\n"); 105 106 /* all set to go */ 107 return CURLE_OK ; 108} 109 110int main(void) 111{ 112 CURL * ch; 113 CURLcode rv; 114 115 rv=curl_global_init(CURL_GLOBAL_ALL); 116 ch=curl_easy_init(); 117 rv=curl_easy_setopt(ch,CURLOPT_VERBOSE, 0L); 118 rv=curl_easy_setopt(ch,CURLOPT_HEADER, 0L); 119 rv=curl_easy_setopt(ch,CURLOPT_NOPROGRESS, 1L); 120 rv=curl_easy_setopt(ch,CURLOPT_NOSIGNAL, 1L); 121 rv=curl_easy_setopt(ch,CURLOPT_WRITEFUNCTION, *writefunction); 122 rv=curl_easy_setopt(ch,CURLOPT_WRITEDATA, stdout); 123 rv=curl_easy_setopt(ch,CURLOPT_HEADERFUNCTION, *writefunction); 124 rv=curl_easy_setopt(ch,CURLOPT_WRITEHEADER, stderr); 125 rv=curl_easy_setopt(ch,CURLOPT_SSLCERTTYPE,"PEM"); 126 rv=curl_easy_setopt(ch,CURLOPT_SSL_VERIFYPEER,1L); 127 rv=curl_easy_setopt(ch, CURLOPT_URL, "https://www.example.com/"); 128 129 /* first try: retrieve page without cacerts' certificate -> will fail 130 */ 131 rv=curl_easy_perform(ch); 132 if (rv==CURLE_OK) 133 printf("*** transfer succeeded ***\n"); 134 else 135 printf("*** transfer failed ***\n"); 136 137 /* second try: retrieve page using cacerts' certificate -> will succeed 138 * load the certificate by installing a function doing the nescessary 139 * "modifications" to the SSL CONTEXT just before link init 140 */ 141 rv=curl_easy_setopt(ch,CURLOPT_SSL_CTX_FUNCTION, *sslctx_function); 142 rv=curl_easy_perform(ch); 143 if (rv==CURLE_OK) 144 printf("*** transfer succeeded ***\n"); 145 else 146 printf("*** transfer failed ***\n"); 147 148 curl_easy_cleanup(ch); 149 curl_global_cleanup(); 150 return rv; 151} 152