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CURLOPT_SSL_CTX_*.3: tidy up the example
Use the proper code style. Don't store return codes that aren't read. Copy the same example into CURLOPT_SSL_CTX_FUNCTION.3 as well. Closes #7500
This commit is contained in:
Daniel Stenberg
parent
17c7a56d14
commit
76bed59ec3
2 changed files with 92 additions and 18 deletions
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@ -5,7 +5,7 @@
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.\" * | (__| |_| | _ <| |___
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.\" * \___|\___/|_| \_\_____|
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.\" *
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.\" * Copyright (C) 1998 - 2019, Daniel Stenberg, <daniel@haxx.se>, et al.
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.\" * Copyright (C) 1998 - 2021, Daniel Stenberg, <daniel@haxx.se>, et al.
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.\" *
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.\" * This software is licensed as described in the file COPYING, which
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.\" * you should have received as part of this distribution. The terms
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@ -46,11 +46,11 @@ All TLS based protocols: HTTPS, FTPS, IMAPS, POP3S, SMTPS etc.
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static CURLcode sslctx_function(CURL *curl, void *sslctx, void *parm)
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{
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X509_STORE *store;
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X509 *cert=NULL;
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X509 *cert = NULL;
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BIO *bio;
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char *mypem = (char *)parm;
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char *mypem = parm;
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/* get a BIO */
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bio=BIO_new_mem_buf(mypem, -1);
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bio = BIO_new_mem_buf(mypem, -1);
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/* use it to read the PEM formatted certificate from memory into an
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* X509 structure that SSL can use
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*/
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@ -59,10 +59,10 @@ static CURLcode sslctx_function(CURL *curl, void *sslctx, void *parm)
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printf("PEM_read_bio_X509 failed...\\n");
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/* get a pointer to the X509 certificate store (which may be empty) */
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store=SSL_CTX_get_cert_store((SSL_CTX *)sslctx);
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store = SSL_CTX_get_cert_store((SSL_CTX *)sslctx);
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/* add our certificate to this store */
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if(X509_STORE_add_cert(store, cert)==0)
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if(X509_STORE_add_cert(store, cert) == 0)
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printf("error adding certificate\\n");
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/* decrease reference counts */
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@ -88,20 +88,21 @@ int main(void)
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"omTxJBzcoTWcFbLUvFUufQb1nA5V9FrWk9p2rSVzTMVD\\n"
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"-----END CERTIFICATE-----\\n";
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rv=curl_global_init(CURL_GLOBAL_ALL);
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ch=curl_easy_init();
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rv=curl_easy_setopt(ch, CURLOPT_SSLCERTTYPE, "PEM");
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rv=curl_easy_setopt(ch, CURLOPT_SSL_VERIFYPEER, 1L);
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rv=curl_easy_setopt(ch, CURLOPT_URL, "https://www.example.com/");
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curl_global_init(CURL_GLOBAL_ALL);
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ch = curl_easy_init();
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curl_easy_setopt(ch, CURLOPT_SSLCERTTYPE, "PEM");
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curl_easy_setopt(ch, CURLOPT_SSL_VERIFYPEER, 1L);
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curl_easy_setopt(ch, CURLOPT_URL, "https://www.example.com/");
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/* Retrieve page using cacerts' certificate -> will succeed
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* load the certificate by installing a function doing the necessary
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* "modifications" to the SSL CONTEXT just before link init
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*/
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rv=curl_easy_setopt(ch, CURLOPT_SSL_CTX_FUNCTION, *sslctx_function);
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rv=curl_easy_setopt(ch, CURLOPT_SSL_CTX_DATA, mypem);
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rv=curl_easy_perform(ch);
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if(rv==CURLE_OK)
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curl_easy_setopt(ch, CURLOPT_SSL_CTX_FUNCTION, *sslctx_function);
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curl_easy_setopt(ch, CURLOPT_SSL_CTX_DATA, mypem);
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rv = curl_easy_perform(ch);
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if(!rv)
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printf("*** transfer succeeded ***\\n");
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else
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printf("*** transfer failed ***\\n");
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@ -5,7 +5,7 @@
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.\" * | (__| |_| | _ <| |___
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.\" * \___|\___/|_| \_\_____|
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.\" *
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.\" * Copyright (C) 1998 - 2019, Daniel Stenberg, <daniel@haxx.se>, et al.
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.\" * Copyright (C) 1998 - 2021, Daniel Stenberg, <daniel@haxx.se>, et al.
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.\" *
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.\" * This software is licensed as described in the file COPYING, which
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.\" * you should have received as part of this distribution. The terms
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@ -75,9 +75,82 @@ NULL
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.SH PROTOCOLS
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All TLS based protocols: HTTPS, FTPS, IMAPS, POP3S, SMTPS etc.
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.SH EXAMPLE
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See cacertinmem.c in docs/examples directory for usage example.
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.nf
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/* OpenSSL specific */
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https://curl.se/libcurl/c/cacertinmem.html
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#include <openssl/ssl.h>
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#include <curl/curl.h>
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#include <stdio.h>
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static CURLcode sslctx_function(CURL *curl, void *sslctx, void *parm)
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{
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X509_STORE *store;
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X509 *cert = NULL;
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BIO *bio;
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char *mypem = parm;
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/* get a BIO */
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bio = BIO_new_mem_buf(mypem, -1);
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/* use it to read the PEM formatted certificate from memory into an
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* X509 structure that SSL can use
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*/
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PEM_read_bio_X509(bio, &cert, 0, NULL);
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if(cert == NULL)
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printf("PEM_read_bio_X509 failed...\\n");
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/* get a pointer to the X509 certificate store (which may be empty) */
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store = SSL_CTX_get_cert_store((SSL_CTX *)sslctx);
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/* add our certificate to this store */
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if(X509_STORE_add_cert(store, cert) == 0)
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printf("error adding certificate\\n");
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/* decrease reference counts */
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X509_free(cert);
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BIO_free(bio);
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/* all set to go */
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return CURLE_OK;
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}
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int main(void)
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{
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CURL * ch;
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CURLcode rv;
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char *mypem = /* example CA cert PEM - shortened */
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"-----BEGIN CERTIFICATE-----\\n"
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"MIIHPTCCBSWgAwIBAgIBADANBgkqhkiG9w0BAQQFADB5MRAwDgYDVQQKEwdSb290\\n"
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"IENBMR4wHAYDVQQLExVodHRwOi8vd3d3LmNhY2VydC5vcmcxIjAgBgNVBAMTGUNB\\n"
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"IENlcnQgU2lnbmluZyBBdXRob3JpdHkxITAfBgkqhkiG9w0BCQEWEnN1cHBvcnRA\\n"
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"Y2FjZXJ0Lm9yZzAeFw0wMzAzMzAxMjI5NDlaFw0zMzAzMjkxMjI5NDlaMHkxEDAO\\n"
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"GCSNe9FINSkYQKyTYOGWhlC0elnYjyELn8+CkcY7v2vcB5G5l1YjqrZslMZIBjzk\\n"
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"zk6q5PYvCdxTby78dOs6Y5nCpqyJvKeyRKANihDjbPIky/qbn3BHLt4Ui9SyIAmW\\n"
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"omTxJBzcoTWcFbLUvFUufQb1nA5V9FrWk9p2rSVzTMVD\\n"
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"-----END CERTIFICATE-----\\n";
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curl_global_init(CURL_GLOBAL_ALL);
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ch = curl_easy_init();
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curl_easy_setopt(ch, CURLOPT_SSLCERTTYPE, "PEM");
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curl_easy_setopt(ch, CURLOPT_SSL_VERIFYPEER, 1L);
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curl_easy_setopt(ch, CURLOPT_URL, "https://www.example.com/");
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/* Retrieve page using cacerts' certificate -> will succeed
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* load the certificate by installing a function doing the necessary
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* "modifications" to the SSL CONTEXT just before link init
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*/
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curl_easy_setopt(ch, CURLOPT_SSL_CTX_FUNCTION, *sslctx_function);
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curl_easy_setopt(ch, CURLOPT_SSL_CTX_DATA, mypem);
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rv = curl_easy_perform(ch);
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if(!rv)
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printf("*** transfer succeeded ***\\n");
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else
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printf("*** transfer failed ***\\n");
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curl_easy_cleanup(ch);
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curl_global_cleanup();
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return rv;
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}
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.fi
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.SH AVAILABILITY
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Added in 7.11.0 for OpenSSL, in 7.42.0 for wolfSSL and in 7.54.0 for
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mbedTLS. Other SSL backends are not supported.
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