usercertinmem.c (9293B)
1 /*************************************************************************** 2 * _ _ ____ _ 3 * Project ___| | | | _ \| | 4 * / __| | | | |_) | | 5 * | (__| |_| | _ <| |___ 6 * \___|\___/|_| \_\_____| 7 * 8 * Copyright (C) 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 https://curl.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 * SPDX-License-Identifier: curl 22 * 23 ***************************************************************************/ 24 /* <DESC> 25 * Use an in-memory user certificate and RSA key and retrieve an https page. 26 * </DESC> 27 */ 28 /* Written by Ishan SinghLevett, based on Theo Borm's cacertinmem.c. 29 * Note that to maintain simplicity this example does not use a CA certificate 30 * for peer verification. However, some form of peer verification 31 * must be used in real circumstances when a secure connection is required. 32 */ 33 34 #ifndef OPENSSL_SUPPRESS_DEPRECATED 35 #define OPENSSL_SUPPRESS_DEPRECATED 36 #endif 37 38 #include <openssl/ssl.h> 39 #include <openssl/x509.h> 40 #include <openssl/pem.h> 41 #include <curl/curl.h> 42 #include <stdio.h> 43 44 #if defined(__GNUC__) || defined(__clang__) 45 #pragma GCC diagnostic ignored "-Woverlength-strings" 46 #endif 47 48 static size_t writefunction(void *ptr, size_t size, size_t nmemb, void *stream) 49 { 50 fwrite(ptr, size, nmemb, stream); 51 return nmemb * size; 52 } 53 54 static CURLcode sslctx_function(CURL *curl, void *sslctx, void *parm) 55 { 56 X509 *cert = NULL; 57 BIO *bio = NULL; 58 BIO *kbio = NULL; 59 RSA *rsa = NULL; 60 int ret; 61 62 const char *mypem = /* www.cacert.org */ 63 "-----BEGIN CERTIFICATE-----\n"\ 64 "MIIHPTCCBSWgAwIBAgIBADANBgkqhkiG9w0BAQQFADB5MRAwDgYDVQQKEwdSb290\n"\ 65 "IENBMR4wHAYDVQQLExVodHRwOi8vd3d3LmNhY2VydC5vcmcxIjAgBgNVBAMTGUNB\n"\ 66 "IENlcnQgU2lnbmluZyBBdXRob3JpdHkxITAfBgkqhkiG9w0BCQEWEnN1cHBvcnRA\n"\ 67 "Y2FjZXJ0Lm9yZzAeFw0wMzAzMzAxMjI5NDlaFw0zMzAzMjkxMjI5NDlaMHkxEDAO\n"\ 68 "BgNVBAoTB1Jvb3QgQ0ExHjAcBgNVBAsTFWh0dHA6Ly93d3cuY2FjZXJ0Lm9yZzEi\n"\ 69 "MCAGA1UEAxMZQ0EgQ2VydCBTaWduaW5nIEF1dGhvcml0eTEhMB8GCSqGSIb3DQEJ\n"\ 70 "ARYSc3VwcG9ydEBjYWNlcnQub3JnMIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIIC\n"\ 71 "CgKCAgEAziLA4kZ97DYoB1CW8qAzQIxL8TtmPzHlawI229Z89vGIj053NgVBlfkJ\n"\ 72 "8BLPRoZzYLdufujAWGSuzbCtRRcMY/pnCujW0r8+55jE8Ez64AO7NV1sId6eINm6\n"\ 73 "zWYyN3L69wj1x81YyY7nDl7qPv4coRQKFWyGhFtkZip6qUtTefWIonvuLwphK42y\n"\ 74 "fk1WpRPs6tqSnqxEQR5YYGUFZvjARL3LlPdCfgv3ZWiYUQXw8wWRBB0bF4LsyFe7\n"\ 75 "w2t6iPGwcswlWyCR7BYCEo8y6RcYSNDHBS4CMEK4JZwFaz+qOqfrU0j36NK2B5jc\n"\ 76 "G8Y0f3/JHIJ6BVgrCFvzOKKrF11myZjXnhCLotLddJr3cQxyYN/Nb5gznZY0dj4k\n"\ 77 "epKwDpUeb+agRThHqtdB7Uq3EvbXG4OKDy7YCbZZ16oE/9KTfWgu3YtLq1i6L43q\n"\ 78 "laegw1SJpfvbi1EinbLDvhG+LJGGi5Z4rSDTii8aP8bQUWWHIbEZAWV/RRyH9XzQ\n"\ 79 "QUxPKZgh/TMfdQwEUfoZd9vUFBzugcMd9Zi3aQaRIt0AUMyBMawSB3s42mhb5ivU\n"\ 80 "fslfrejrckzzAeVLIL+aplfKkQABi6F1ITe1Yw1nPkZPcCBnzsXWWdsC4PDSy826\n"\ 81 "YreQQejdIOQpvGQpQsgi3Hia/0PsmBsJUUtaWsJx8cTLc6nloQsCAwEAAaOCAc4w\n"\ 82 "ggHKMB0GA1UdDgQWBBQWtTIb1Mfz4OaO873SsDrusjkY0TCBowYDVR0jBIGbMIGY\n"\ 83 "gBQWtTIb1Mfz4OaO873SsDrusjkY0aF9pHsweTEQMA4GA1UEChMHUm9vdCBDQTEe\n"\ 84 "MBwGA1UECxMVaHR0cDovL3d3dy5jYWNlcnQub3JnMSIwIAYDVQQDExlDQSBDZXJ0\n"\ 85 "IFNpZ25pbmcgQXV0aG9yaXR5MSEwHwYJKoZIhvcNAQkBFhJzdXBwb3J0QGNhY2Vy\n"\ 86 "dC5vcmeCAQAwDwYDVR0TAQH/BAUwAwEB/zAyBgNVHR8EKzApMCegJaAjhiFodHRw\n"\ 87 "czovL3d3dy5jYWNlcnQub3JnL3Jldm9rZS5jcmwwMAYJYIZIAYb4QgEEBCMWIWh0\n"\ 88 "dHBzOi8vd3d3LmNhY2VydC5vcmcvcmV2b2tlLmNybDA0BglghkgBhvhCAQgEJxYl\n"\ 89 "aHR0cDovL3d3dy5jYWNlcnQub3JnL2luZGV4LnBocD9pZD0xMDBWBglghkgBhvhC\n"\ 90 "AQ0ESRZHVG8gZ2V0IHlvdXIgb3duIGNlcnRpZmljYXRlIGZvciBGUkVFIGhlYWQg\n"\ 91 "b3ZlciB0byBodHRwOi8vd3d3LmNhY2VydC5vcmcwDQYJKoZIhvcNAQEEBQADggIB\n"\ 92 "ACjH7pyCArpcgBLKNQodgW+JapnM8mgPf6fhjViVPr3yBsOQWqy1YPaZQwGjiHCc\n"\ 93 "nWKdpIevZ1gNMDY75q1I08t0AoZxPuIrA2jxNGJARjtT6ij0rPtmlVOKTV39O9lg\n"\ 94 "18p5aTuxZZKmxoGCXJzN600BiqXfEVWqFcofN8CCmHBh22p8lqOOLlQ+TyGpkO/c\n"\ 95 "gr/c6EWtTZBzCDyUZbAEmXZ/4rzCahWqlwQ3JNgelE5tDlG+1sSPypZt90Pf6DBl\n"\ 96 "Jzt7u0NDY8RD97LsaMzhGY4i+5jhe1o+ATc7iwiwovOVThrLm82asduycPAtStvY\n"\ 97 "sONvRUgzEv/+PDIqVPfE94rwiCPCR/5kenHA0R6mY7AHfqQv0wGP3J8rtsYIqQ+T\n"\ 98 "SCX8Ev2fQtzzxD72V7DX3WnRBnc0CkvSyqD/HMaMyRa+xMwyN2hzXwj7UfdJUzYF\n"\ 99 "CpUCTPJ5GhD22Dp1nPMd8aINcGeGG7MW9S/lpOt5hvk9C8JzC6WZrG/8Z7jlLwum\n"\ 100 "GCSNe9FINSkYQKyTYOGWhlC0elnYjyELn8+CkcY7v2vcB5G5l1YjqrZslMZIBjzk\n"\ 101 "zk6q5PYvCdxTby78dOs6Y5nCpqyJvKeyRKANihDjbPIky/qbn3BHLt4Ui9SyIAmW\n"\ 102 "omTxJBzcoTWcFbLUvFUufQb1nA5V9FrWk9p2rSVzTMVD\n"\ 103 "-----END CERTIFICATE-----\n"; 104 105 /* replace the XXX with the actual RSA key */ 106 const char *mykey = 107 "-----BEGIN RSA PRIVATE KEY-----\n"\ 108 "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX\n"\ 109 "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX\n"\ 110 "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX\n"\ 111 "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX\n"\ 112 "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX\n"\ 113 "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX\n"\ 114 "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX\n"\ 115 "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX\n"\ 116 "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX\n"\ 117 "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX\n"\ 118 "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX\n"\ 119 "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX\n"\ 120 "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX\n"\ 121 "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX\n"\ 122 "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX\n"\ 123 "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX\n"\ 124 "-----END RSA PRIVATE KEY-----\n"; 125 126 (void)curl; /* avoid warnings */ 127 (void)parm; /* avoid warnings */ 128 129 /* get a BIO */ 130 bio = BIO_new_mem_buf((char *)mypem, -1); 131 132 if(!bio) { 133 printf("BIO_new_mem_buf failed\n"); 134 } 135 136 /* use it to read the PEM formatted certificate from memory into an X509 137 * structure that SSL can use 138 */ 139 cert = PEM_read_bio_X509(bio, NULL, 0, NULL); 140 if(!cert) { 141 printf("PEM_read_bio_X509 failed...\n"); 142 } 143 144 /* tell SSL to use the X509 certificate */ 145 ret = SSL_CTX_use_certificate((SSL_CTX*)sslctx, cert); 146 if(ret != 1) { 147 printf("Use certificate failed\n"); 148 } 149 150 /* create a bio for the RSA key */ 151 kbio = BIO_new_mem_buf((char *)mykey, -1); 152 if(!kbio) { 153 printf("BIO_new_mem_buf failed\n"); 154 } 155 156 /* read the key bio into an RSA object */ 157 rsa = PEM_read_bio_RSAPrivateKey(kbio, NULL, 0, NULL); 158 if(!rsa) { 159 printf("Failed to create key bio\n"); 160 } 161 162 /* tell SSL to use the RSA key from memory */ 163 ret = SSL_CTX_use_RSAPrivateKey((SSL_CTX*)sslctx, rsa); 164 if(ret != 1) { 165 printf("Use Key failed\n"); 166 } 167 168 /* free resources that have been allocated by OpenSSL functions */ 169 if(bio) 170 BIO_free(bio); 171 172 if(kbio) 173 BIO_free(kbio); 174 175 if(rsa) 176 RSA_free(rsa); 177 178 if(cert) 179 X509_free(cert); 180 181 /* all set to go */ 182 return CURLE_OK; 183 } 184 185 int main(void) 186 { 187 CURL *ch; 188 CURLcode rv; 189 190 curl_global_init(CURL_GLOBAL_ALL); 191 ch = curl_easy_init(); 192 curl_easy_setopt(ch, CURLOPT_VERBOSE, 0L); 193 curl_easy_setopt(ch, CURLOPT_HEADER, 0L); 194 curl_easy_setopt(ch, CURLOPT_NOPROGRESS, 1L); 195 curl_easy_setopt(ch, CURLOPT_NOSIGNAL, 1L); 196 curl_easy_setopt(ch, CURLOPT_WRITEFUNCTION, writefunction); 197 curl_easy_setopt(ch, CURLOPT_WRITEDATA, stdout); 198 curl_easy_setopt(ch, CURLOPT_HEADERFUNCTION, writefunction); 199 curl_easy_setopt(ch, CURLOPT_HEADERDATA, stderr); 200 curl_easy_setopt(ch, CURLOPT_SSLCERTTYPE, "PEM"); 201 202 /* both VERIFYPEER and VERIFYHOST are set to 0 in this case because there is 203 no CA certificate */ 204 205 curl_easy_setopt(ch, CURLOPT_SSL_VERIFYPEER, 0L); 206 curl_easy_setopt(ch, CURLOPT_SSL_VERIFYHOST, 0L); 207 curl_easy_setopt(ch, CURLOPT_URL, "https://www.example.com/"); 208 curl_easy_setopt(ch, CURLOPT_SSLKEYTYPE, "PEM"); 209 210 /* first try: retrieve page without user certificate and key -> fails */ 211 rv = curl_easy_perform(ch); 212 if(rv == CURLE_OK) { 213 printf("*** transfer succeeded ***\n"); 214 } 215 else { 216 printf("*** transfer failed ***\n"); 217 } 218 219 /* second try: retrieve page using user certificate and key -> succeeds 220 * load the certificate and key by installing a function doing the necessary 221 * "modifications" to the SSL CONTEXT just before link init 222 */ 223 curl_easy_setopt(ch, CURLOPT_SSL_CTX_FUNCTION, sslctx_function); 224 rv = curl_easy_perform(ch); 225 if(rv == CURLE_OK) { 226 printf("*** transfer succeeded ***\n"); 227 } 228 else { 229 printf("*** transfer failed ***\n"); 230 } 231 232 curl_easy_cleanup(ch); 233 curl_global_cleanup(); 234 return (int)rv; 235 }