From a0f3eaf25dd2c4acf1f49d28d5de4f1765521709 Mon Sep 17 00:00:00 2001 From: Jay Satiro Date: Tue, 19 Dec 2017 02:17:39 -0500 Subject: 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 --- docs/libcurl/opts/CURLOPT_SSL_CTX_FUNCTION.3 | 74 +--------------------------- 1 file changed, 2 insertions(+), 72 deletions(-) (limited to 'docs/libcurl/opts') 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 -#include -#include - -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. -- cgit v1.2.3