Annotation of embedaddon/curl/docs/examples/cacertinmem.c, revision 1.1.1.1
1.1 misho 1: /***************************************************************************
2: * _ _ ____ _
3: * Project ___| | | | _ \| |
4: * / __| | | | |_) | |
5: * | (__| |_| | _ <| |___
6: * \___|\___/|_| \_\_____|
7: *
8: * Copyright (C) 1998 - 2019, 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.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: /* <DESC>
23: * CA cert in memory with OpenSSL to get a HTTPS page.
24: * </DESC>
25: */
26:
27: #include <openssl/err.h>
28: #include <openssl/ssl.h>
29: #include <curl/curl.h>
30: #include <stdio.h>
31:
32: static size_t writefunction(void *ptr, size_t size, size_t nmemb, void *stream)
33: {
34: fwrite(ptr, size, nmemb, (FILE *)stream);
35: return (nmemb*size);
36: }
37:
38: static CURLcode sslctx_function(CURL *curl, void *sslctx, void *parm)
39: {
40: CURLcode rv = CURLE_ABORTED_BY_CALLBACK;
41:
42: /** This example uses two (fake) certificates **/
43: static const char mypem[] =
44: "-----BEGIN CERTIFICATE-----\n"
45: "MIIH0zCCBbugAwIBAgIIXsO3pkN/pOAwDQYJKoZIhvcNAQEFBQAwQjESMBAGA1UE\n"
46: "AwwJQUNDVlJBSVoxMRAwDgYDVQQLDAdQS0lBQ0NWMQ0wCwYDVQQKDARBQ0NWMQsw\n"
47: "CQYDVQQGEwJFUzAeFw0xMTA1MDUwOTM3MzdaFw0zMDEyMzEwOTM3MzdaMEIxEjAQ\n"
48: "BgNVBAMMCUFDQ1ZSQUlaMTEQMA4GA1UECwwHUEtJQUNDVjENMAsGA1UECgwEQUND\n"
49: "VjELMAkGA1UEBhMCRVMwggIiMA0GCSqGSIb3DQEBAQUAA4ICDwAwggIKAoICAQCb\n"
50: "qau/YUqXry+XZpp0X9DZlv3P4uRm7x8fRzPCRKPfmt4ftVTdFXxpNRFvu8gMjmoY\n"
51: "HtiP2Ra8EEg2XPBjs5BaXCQ316PWywlxufEBcoSwfdtNgM3802/J+Nq2DoLSRYWo\n"
52: "G2ioPej0RGy9ocLLA76MPhMAhN9KSMDjIgro6TenGEyxCQ0jVn8ETdkXhBilyNpA\n"
53: "0KIV9VMJcRz/RROE5iZe+OCIHAr8Fraocwa48GOEAqDGWuzndN9wrqODJerWx5eH\n"
54: "k6fGioozl2A3ED6XPm4pFdahD9GILBKfb6qkxkLrQaLjlUPTAYVtjrs78yM2x/47\n"
55: "JyCpZET/LtZ1qmxNYEAZSUNUY9rizLpm5U9EelvZaoErQNV/+QEnWCzI7UiRfD+m\n"
56: "AM/EKXMRNt6GGT6d7hmKG9Ww7Y49nCrADdg9ZuM8Db3VlFzi4qc1GwQA9j9ajepD\n"
57: "vV+JHanBsMyZ4k0ACtrJJ1vnE5Bc5PUzolVt3OAJTS+xJlsndQAJxGJ3KQhfnlms\n"
58: "tn6tn1QwIgPBHnFk/vk4CpYY3QIUrCPLBhwepH2NDd4nQeit2hW3sCPdK6jT2iWH\n"
59: "7ehVRE2I9DZ+hJp4rPcOVkkO1jMl1oRQQmwgEh0q1b688nCBpHBgvgW1m54ERL5h\n"
60: "I6zppSSMEYCUWqKiuUnSwdzRp+0xESyeGabu4VXhwOrPDYTkF7eifKXeVSUG7szA\n"
61: "h1xA2syVP1XgNce4hL60Xc16gwFy7ofmXx2utYXGJt/mwZrpHgJHnyqobalbz+xF\n"
62: "d3+YJ5oyXSrjhO7FmGYvliAd3djDJ9ew+f7Zfc3Qn48LFFhRny+Lwzgt3uiP1o2H\n"
63: "pPVWQxaZLPSkVrQ0uGE3ycJYgBugl6H8WY3pEfbRD0tVNEYqi4Y7\n"
64: "-----END CERTIFICATE-----\n"
65: "-----BEGIN CERTIFICATE-----\n"
66: "MIIFtTCCA52gAwIBAgIIYY3HhjsBggUwDQYJKoZIhvcNAQEFBQAwRDEWMBQGA1UE\n"
67: "AwwNQUNFRElDT00gUm9vdDEMMAoGA1UECwwDUEtJMQ8wDQYDVQQKDAZFRElDT00x\n"
68: "CzAJBgNVBAYTAkVTMB4XDTA4MDQxODE2MjQyMloXDTI4MDQxMzE2MjQyMlowRDEW\n"
69: "MBQGA1UEAwwNQUNFRElDT00gUm9vdDEMMAoGA1UECwwDUEtJMQ8wDQYDVQQKDAZF\n"
70: "RElDT00xCzAJBgNVBAYTAkVTMIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKC\n"
71: "AgEA/5KV4WgGdrQsyFhIyv2AVClVYyT/kGWbEHV7w2rbYgIB8hiGtXxaOLHkWLn7\n"
72: "09gtn70yN78sFW2+tfQh0hOR2QetAQXW8713zl9CgQr5auODAKgrLlUTY4HKRxx7\n"
73: "XBZXehuDYAQ6PmXDzQHe3qTWDLqO3tkE7hdWIpuPY/1NFgu3e3eM+SW10W2ZEi5P\n"
74: "gvoFNTPhNahXwOf9jU8/kzJPeGYDdwdY6ZXIfj7QeQCM8htRM5u8lOk6e25SLTKe\n"
75: "I6RF+7YuE7CLGLHdztUdp0J/Vb77W7tH1PwkzQSulgUV1qzOMPPKC8W64iLgpq0i\n"
76: "5ALudBF/TP94HTXa5gI06xgSYXcGCRZj6hitoocf8seACQl1ThCojz2GuHURwCRi\n"
77: "ipZ7SkXp7FnFvmuD5uHorLUwHv4FB4D54SMNUI8FmP8sX+g7tq3PgbUhh8oIKiMn\n"
78: "MCArz+2UW6yyetLHKKGKC5tNSixthT8Jcjxn4tncB7rrZXtaAWPWkFtPF2Y9fwsZ\n"
79: "o5NjEFIqnxQWWOLcpfShFosOkYuByptZ+thrkQdlVV9SH686+5DdaaVbnG0OLLb6\n"
80: "zqylfDJKZ0DcMDQj3dcEI2bw/FWAp/tmGYI1Z2JwOV5vx+qQQEQIHriy1tvuWacN\n"
81: "GHk0vFQYXlPKNFHtRQrmjseCNj6nOGOpMCwXEGCSn1WHElkQwg9naRHMTh5+Spqt\n"
82: "r0CodaxWkHS4oJyleW/c6RrIaQXpuvoDs3zk4E7Czp3otkYNbn5XOmeUwssfnHdK\n"
83: "Z05phkOTOPu220+DkdRgfks+KzgHVZhepA==\n"
84: "-----END CERTIFICATE-----\n";
85:
86: BIO *cbio = BIO_new_mem_buf(mypem, sizeof(mypem));
87: X509_STORE *cts = SSL_CTX_get_cert_store((SSL_CTX *)sslctx);
88: int i;
89: STACK_OF(X509_INFO) *inf;
90: (void)curl;
91: (void)parm;
92:
93: if(!cts || !cbio) {
94: return rv;
95: }
96:
97: inf = PEM_X509_INFO_read_bio(cbio, NULL, NULL, NULL);
98:
99: if(!inf) {
100: BIO_free(cbio);
101: return rv;
102: }
103:
104: for(i = 0; i < sk_X509_INFO_num(inf); i++) {
105: X509_INFO *itmp = sk_X509_INFO_value(inf, i);
106: if(itmp->x509) {
107: X509_STORE_add_cert(cts, itmp->x509);
108: }
109: if(itmp->crl) {
110: X509_STORE_add_crl(cts, itmp->crl);
111: }
112: }
113:
114: sk_X509_INFO_pop_free(inf, X509_INFO_free);
115: BIO_free(cbio);
116:
117: rv = CURLE_OK;
118: return rv;
119: }
120:
121: int main(void)
122: {
123: CURL *ch;
124: CURLcode rv;
125:
126: curl_global_init(CURL_GLOBAL_ALL);
127: ch = curl_easy_init();
128: curl_easy_setopt(ch, CURLOPT_VERBOSE, 0L);
129: curl_easy_setopt(ch, CURLOPT_HEADER, 0L);
130: curl_easy_setopt(ch, CURLOPT_NOPROGRESS, 1L);
131: curl_easy_setopt(ch, CURLOPT_NOSIGNAL, 1L);
132: curl_easy_setopt(ch, CURLOPT_WRITEFUNCTION, *writefunction);
133: curl_easy_setopt(ch, CURLOPT_WRITEDATA, stdout);
134: curl_easy_setopt(ch, CURLOPT_HEADERFUNCTION, *writefunction);
135: curl_easy_setopt(ch, CURLOPT_HEADERDATA, stderr);
136: curl_easy_setopt(ch, CURLOPT_SSLCERTTYPE, "PEM");
137: curl_easy_setopt(ch, CURLOPT_SSL_VERIFYPEER, 1L);
138: curl_easy_setopt(ch, CURLOPT_URL, "https://www.example.com/");
139:
140: /* Turn off the default CA locations, otherwise libcurl will load CA
141: * certificates from the locations that were detected/specified at
142: * build-time
143: */
144: curl_easy_setopt(ch, CURLOPT_CAINFO, NULL);
145: curl_easy_setopt(ch, CURLOPT_CAPATH, NULL);
146:
147: /* first try: retrieve page without ca certificates -> should fail
148: * unless libcurl was built --with-ca-fallback enabled at build-time
149: */
150: rv = curl_easy_perform(ch);
151: if(rv == CURLE_OK)
152: printf("*** transfer succeeded ***\n");
153: else
154: printf("*** transfer failed ***\n");
155:
156: /* use a fresh connection (optional)
157: * this option seriously impacts performance of multiple transfers but
158: * it is necessary order to demonstrate this example. recall that the
159: * ssl ctx callback is only called _before_ an SSL connection is
160: * established, therefore it will not affect existing verified SSL
161: * connections already in the connection cache associated with this
162: * handle. normally you would set the ssl ctx function before making
163: * any transfers, and not use this option.
164: */
165: curl_easy_setopt(ch, CURLOPT_FRESH_CONNECT, 1L);
166:
167: /* second try: retrieve page using cacerts' certificate -> will succeed
168: * load the certificate by installing a function doing the necessary
169: * "modifications" to the SSL CONTEXT just before link init
170: */
171: curl_easy_setopt(ch, CURLOPT_SSL_CTX_FUNCTION, *sslctx_function);
172: rv = curl_easy_perform(ch);
173: if(rv == CURLE_OK)
174: printf("*** transfer succeeded ***\n");
175: else
176: printf("*** transfer failed ***\n");
177:
178: curl_easy_cleanup(ch);
179: curl_global_cleanup();
180: return rv;
181: }
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