cacertinmem.c: use multiple certificates for loading CA-chain

Closes #3421
This commit is contained in:
DaVieS 2018-12-31 01:36:05 +01:00 committed by Daniel Stenberg
parent 62a2534e4c
commit 0f6c6efd81
No known key found for this signature in database
GPG Key ID: 5CC908FDB71E12C2
1 changed files with 73 additions and 75 deletions

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@ -5,7 +5,7 @@
* | (__| |_| | _ <| |___ * | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____| * \___|\___/|_| \_\_____|
* *
* Copyright (C) 1998 - 2018, Daniel Stenberg, <daniel@haxx.se>, et al. * Copyright (C) 1998 - 2019, Daniel Stenberg, <daniel@haxx.se>, et al.
* *
* This software is licensed as described in the file COPYING, which * This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms * you should have received as part of this distribution. The terms
@ -29,7 +29,7 @@
#include <curl/curl.h> #include <curl/curl.h>
#include <stdio.h> #include <stdio.h>
size_t writefunction(void *ptr, size_t size, size_t nmemb, void *stream) static size_t writefunction(void *ptr, size_t size, size_t nmemb, void *stream)
{ {
fwrite(ptr, size, nmemb, (FILE *)stream); fwrite(ptr, size, nmemb, (FILE *)stream);
return (nmemb*size); return (nmemb*size);
@ -38,88 +38,86 @@ size_t writefunction(void *ptr, size_t size, size_t nmemb, void *stream)
static CURLcode sslctx_function(CURL *curl, void *sslctx, void *parm) static CURLcode sslctx_function(CURL *curl, void *sslctx, void *parm)
{ {
CURLcode rv = CURLE_ABORTED_BY_CALLBACK; CURLcode rv = CURLE_ABORTED_BY_CALLBACK;
X509_STORE *store = NULL;
X509 *cert = NULL; /** This example uses two (fake) certificates **/
BIO *bio = NULL; static const char mypem[] =
char *mypem =
/* CA for example.com. CN = DigiCert High Assurance EV Root CA */
"-----BEGIN CERTIFICATE-----\n" "-----BEGIN CERTIFICATE-----\n"
"MIIDxTCCAq2gAwIBAgIQAqxcJmoLQJuPC3nyrkYldzANBgkqhkiG9w0BAQUFADBs\n" "MIIH0zCCBbugAwIBAgIIXsO3pkN/pOAwDQYJKoZIhvcNAQEFBQAwQjESMBAGA1UE\n"
"MQswCQYDVQQGEwJVUzEVMBMGA1UEChMMRGlnaUNlcnQgSW5jMRkwFwYDVQQLExB3\n" "AwwJQUNDVlJBSVoxMRAwDgYDVQQLDAdQS0lBQ0NWMQ0wCwYDVQQKDARBQ0NWMQsw\n"
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"PNt0OKRKzE0lgvdKpVMSOO7zSW1xkX5jtqumX8OkhPhPYlG++MXs2ziS4wblCJEM\n" "0KIV9VMJcRz/RROE5iZe+OCIHAr8Fraocwa48GOEAqDGWuzndN9wrqODJerWx5eH\n"
"xChBVfvLWokVfnHoNb9Ncgk9vjo4UFt3MRuNs8ckRZqnrG0AFFoEt7oT61EKmEFB\n" "k6fGioozl2A3ED6XPm4pFdahD9GILBKfb6qkxkLrQaLjlUPTAYVtjrs78yM2x/47\n"
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"nzyIZgYIVyHbIUf4KmeqvxgydkAQV8GK83rZEWWONfqe/EW1ntlMMUu4kehDLI6z\n" "I6zppSSMEYCUWqKiuUnSwdzRp+0xESyeGabu4VXhwOrPDYTkF7eifKXeVSUG7szA\n"
"eM7b41N5cdblIZQB2lWHmiRk9opmzN6cN82oNLFpmyPInngiK3BD41VHMWEZ71jF\n" "h1xA2syVP1XgNce4hL60Xc16gwFy7ofmXx2utYXGJt/mwZrpHgJHnyqobalbz+xF\n"
"hS9OMPagMRYjyOfiZRYzy78aG6A9+MpeizGLYAiJLQwGXFK3xPkKmNEVX58Svnw2\n" "d3+YJ5oyXSrjhO7FmGYvliAd3djDJ9ew+f7Zfc3Qn48LFFhRny+Lwzgt3uiP1o2H\n"
"Yzi9RKR/5CYrCsSXaQ3pjOLAEFe4yHYSkVXySGnYvCoCWw9E1CAx2/S6cCZdkGCe\n" "pPVWQxaZLPSkVrQ0uGE3ycJYgBugl6H8WY3pEfbRD0tVNEYqi4Y7\n"
"vEsXCS+0yx5DaMkHJ8HSXPfqIbloEpw8nL+e/IBcm2PN7EeqJSdnoDfzAIJ9VNep\n" "-----END CERTIFICATE-----\n"
"+OkuE6N36B9K\n" "-----BEGIN CERTIFICATE-----\n"
"MIIFtTCCA52gAwIBAgIIYY3HhjsBggUwDQYJKoZIhvcNAQEFBQAwRDEWMBQGA1UE\n"
"AwwNQUNFRElDT00gUm9vdDEMMAoGA1UECwwDUEtJMQ8wDQYDVQQKDAZFRElDT00x\n"
"CzAJBgNVBAYTAkVTMB4XDTA4MDQxODE2MjQyMloXDTI4MDQxMzE2MjQyMlowRDEW\n"
"MBQGA1UEAwwNQUNFRElDT00gUm9vdDEMMAoGA1UECwwDUEtJMQ8wDQYDVQQKDAZF\n"
"RElDT00xCzAJBgNVBAYTAkVTMIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKC\n"
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"gvoFNTPhNahXwOf9jU8/kzJPeGYDdwdY6ZXIfj7QeQCM8htRM5u8lOk6e25SLTKe\n"
"I6RF+7YuE7CLGLHdztUdp0J/Vb77W7tH1PwkzQSulgUV1qzOMPPKC8W64iLgpq0i\n"
"5ALudBF/TP94HTXa5gI06xgSYXcGCRZj6hitoocf8seACQl1ThCojz2GuHURwCRi\n"
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"GHk0vFQYXlPKNFHtRQrmjseCNj6nOGOpMCwXEGCSn1WHElkQwg9naRHMTh5+Spqt\n"
"r0CodaxWkHS4oJyleW/c6RrIaQXpuvoDs3zk4E7Czp3otkYNbn5XOmeUwssfnHdK\n"
"Z05phkOTOPu220+DkdRgfks+KzgHVZhepA==\n"
"-----END CERTIFICATE-----\n"; "-----END CERTIFICATE-----\n";
/* clear the current thread's OpenSSL error queue */ BIO *cbio = BIO_new_mem_buf(mypem, sizeof(mypem));
ERR_clear_error(); X509_STORE *cts = SSL_CTX_get_cert_store((SSL_CTX *)sslctx);
X509_INFO *itmp;
int i, count = 0;
STACK_OF(X509_INFO) *inf;
(void)curl;
(void)parm;
/* get a BIO */ if(!cts || !cbio) {
bio = BIO_new_mem_buf(mypem, -1); return rv;
if(!bio)
goto err;
/* use it to read the PEM formatted certificate from memory into an X509
* structure that SSL can use
*/
if(!PEM_read_bio_X509(bio, &cert, 0, NULL))
goto err;
/* get a pointer to the X509 certificate store (which may be empty!) */
store = SSL_CTX_get_cert_store((SSL_CTX *)sslctx);
if(!store)
goto err;
/* add our certificate to this store */
if(!X509_STORE_add_cert(store, cert)) {
unsigned long error = ERR_peek_last_error();
/* Ignore error X509_R_CERT_ALREADY_IN_HASH_TABLE which means the
* certificate is already in the store. That could happen if
* libcurl already loaded the certificate from a ca cert bundle
* set at libcurl build-time or runtime.
*/
if(ERR_GET_LIB(error) != ERR_LIB_X509 ||
ERR_GET_REASON(error) != X509_R_CERT_ALREADY_IN_HASH_TABLE)
goto err;
ERR_clear_error();
} }
rv = CURLE_OK; inf = PEM_X509_INFO_read_bio(cbio, NULL, NULL, NULL);
err: if(!inf) {
if(rv != CURLE_OK) { BIO_free(cbio);
char errbuf[256]; return rv;
unsigned long error = ERR_peek_last_error(); }
fprintf(stderr, "error adding certificate\n"); for(i = 0; i < sk_X509_INFO_num(inf); i++) {
if(error) { itmp = sk_X509_INFO_value(inf, i);
ERR_error_string_n(error, errbuf, sizeof(errbuf)); if(itmp->x509) {
fprintf(stderr, "%s\n", errbuf); X509_STORE_add_cert(cts, itmp->x509);
count++;
}
if(itmp->crl) {
X509_STORE_add_crl(cts, itmp->crl);
count++;
} }
} }
X509_free(cert); sk_X509_INFO_pop_free(inf, X509_INFO_free);
BIO_free(bio); BIO_free(cbio);
ERR_clear_error();
rv = CURLE_OK;
return rv; return rv;
} }
@ -142,9 +140,9 @@ int main(void)
rv = curl_easy_setopt(ch, CURLOPT_SSL_VERIFYPEER, 1L); rv = curl_easy_setopt(ch, CURLOPT_SSL_VERIFYPEER, 1L);
rv = curl_easy_setopt(ch, CURLOPT_URL, "https://www.example.com/"); rv = curl_easy_setopt(ch, CURLOPT_URL, "https://www.example.com/");
/* turn off the default CA locations (optional) /* Turn off the default CA locations, otherwise libcurl will load CA
* otherwise libcurl will load CA certificates from the locations that * certificates from the locations that were detected/specified at
* were detected/specified at build-time * build-time
*/ */
rv = curl_easy_setopt(ch, CURLOPT_CAINFO, NULL); rv = curl_easy_setopt(ch, CURLOPT_CAINFO, NULL);
rv = curl_easy_setopt(ch, CURLOPT_CAPATH, NULL); rv = curl_easy_setopt(ch, CURLOPT_CAPATH, NULL);