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authorJay Satiro <raysatiro@yahoo.com>2017-12-19 02:17:39 -0500
committerJay Satiro <raysatiro@yahoo.com>2017-12-26 02:08:35 -0500
commita0f3eaf25dd2c4acf1f49d28d5de4f1765521709 (patch)
tree53a2f552a99df162fdd3b917b2a13787f8be1bdb /docs/libcurl/opts
parent859ac3602159ef3df77ac4cb1ae191b069ff1b5b (diff)
examples/cacertinmem: ignore cert-already-exists error
- Ignore X509_R_CERT_ALREADY_IN_HASH_TABLE errors in the CTX callback since it's possible the cert may have already been loaded by libcurl. - Remove the EXAMPLE code in the CURLOPT_SSL_CTX_FUNCTION.3 doc. Instead have it direct the reader to this cacertinmem.c example. - Fix the CA certificate to use the right CA for example.com, Digicert. Bug: https://curl.haxx.se/mail/lib-2017-12/0057.html Reported-by: Thomas van Hesteren Closes https://github.com/curl/curl/pull/2182
Diffstat (limited to 'docs/libcurl/opts')
-rw-r--r--docs/libcurl/opts/CURLOPT_SSL_CTX_FUNCTION.374
1 files changed, 2 insertions, 72 deletions
diff --git a/docs/libcurl/opts/CURLOPT_SSL_CTX_FUNCTION.3 b/docs/libcurl/opts/CURLOPT_SSL_CTX_FUNCTION.3
index 6a6c57f35..929e0ee27 100644
--- a/docs/libcurl/opts/CURLOPT_SSL_CTX_FUNCTION.3
+++ b/docs/libcurl/opts/CURLOPT_SSL_CTX_FUNCTION.3
@@ -62,79 +62,9 @@ NULL
.SH PROTOCOLS
All TLS based protocols: HTTPS, FTPS, IMAPS, POP3S, SMTPS etc.
.SH EXAMPLE
-.nf
-/* OpenSSL specific */
-
-#include <openssl/ssl.h>
-#include <curl/curl.h>
-#include <stdio.h>
-
-static CURLcode sslctx_function(CURL *curl, void *sslctx, void *parm)
-{
- X509_STORE *store;
- X509 *cert=NULL;
- BIO *bio;
- char *mypem = /* example CA cert PEM - shortened */
- "-----BEGIN CERTIFICATE-----\\n"
- "MIIHPTCCBSWgAwIBAgIBADANBgkqhkiG9w0BAQQFADB5MRAwDgYDVQQKEwdSb290\\n"
- "IENBMR4wHAYDVQQLExVodHRwOi8vd3d3LmNhY2VydC5vcmcxIjAgBgNVBAMTGUNB\\n"
- "IENlcnQgU2lnbmluZyBBdXRob3JpdHkxITAfBgkqhkiG9w0BCQEWEnN1cHBvcnRA\\n"
- "Y2FjZXJ0Lm9yZzAeFw0wMzAzMzAxMjI5NDlaFw0zMzAzMjkxMjI5NDlaMHkxEDAO\\n"
- "GCSNe9FINSkYQKyTYOGWhlC0elnYjyELn8+CkcY7v2vcB5G5l1YjqrZslMZIBjzk\\n"
- "zk6q5PYvCdxTby78dOs6Y5nCpqyJvKeyRKANihDjbPIky/qbn3BHLt4Ui9SyIAmW\\n"
- "omTxJBzcoTWcFbLUvFUufQb1nA5V9FrWk9p2rSVzTMVD\\n"
- "-----END CERTIFICATE-----\\n";
- /* get a BIO */
- bio=BIO_new_mem_buf(mypem, -1);
- /* use it to read the PEM formatted certificate from memory into an
- * X509 structure that SSL can use
- */
- PEM_read_bio_X509(bio, &cert, 0, NULL);
- if(cert == NULL)
- printf("PEM_read_bio_X509 failed...\\n");
-
- /* get a pointer to the X509 certificate store (which may be empty) */
- store=SSL_CTX_get_cert_store((SSL_CTX *)sslctx);
-
- /* add our certificate to this store */
- if(X509_STORE_add_cert(store, cert)==0)
- printf("error adding certificate\\n");
-
- /* decrease reference counts */
- X509_free(cert);
- BIO_free(bio);
-
- /* 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_SSLCERTTYPE, "PEM");
- rv=curl_easy_setopt(ch, CURLOPT_SSL_VERIFYPEER, 1L);
- rv=curl_easy_setopt(ch, CURLOPT_URL, "https://www.example.com/");
-
- /* Retrieve page using cacerts' certificate -> will succeed
- * load the certificate 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");
+See cacertinmem.c in docs/examples directory for usage example.
- curl_easy_cleanup(ch);
- curl_global_cleanup();
- return rv;
-}
-.fi
+https://curl.haxx.se/libcurl/c/cacertinmem.html
.SH AVAILABILITY
Added in 7.11.0 for OpenSSL. Added in 7.42.0 for wolfSSL/CyaSSL. Added in
7.54.0 for mbedTLS. Other SSL backends not supported.