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https://github.com/VCMP-SqMod/SqMod.git
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71 lines
2.2 KiB
C++
71 lines
2.2 KiB
C++
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#include "cpr/ssl_ctx.h"
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#if SUPPORT_CURLOPT_SSL_CTX_FUNCTION
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#ifdef OPENSSL_BACKEND_USED
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#include <openssl/err.h>
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#include <openssl/safestack.h>
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#include <openssl/ssl.h>
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namespace cpr {
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/**
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* The ssl_ctx parameter is actually a pointer to the SSL library's SSL_CTX for OpenSSL.
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* If an error is returned from the callback no attempt to establish a connection is made and
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* the perform operation will return the callback's error code.
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*
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* Sources: https://curl.se/libcurl/c/CURLOPT_SSL_CTX_FUNCTION.html
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* https://curl.se/libcurl/c/CURLOPT_SSL_CTX_DATA.html
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*/
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CURLcode sslctx_function_load_ca_cert_from_buffer(CURL* /*curl*/, void* sslctx, void* raw_cert_buf) {
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// Check arguments
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if (raw_cert_buf == nullptr || sslctx == nullptr) {
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printf("Invalid callback arguments\n");
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return CURLE_ABORTED_BY_CALLBACK;
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}
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// Setup pointer
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X509_STORE* store = nullptr;
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X509* cert = nullptr;
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BIO* bio = nullptr;
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char* cert_buf = static_cast<char*>(raw_cert_buf);
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// Create a memory BIO using the data of cert_buf.
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// Note: It is assumed, that cert_buf is nul terminated and its length is determined by strlen.
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bio = BIO_new_mem_buf(cert_buf, -1);
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// Load the PEM formatted certicifate into an X509 structure which OpenSSL can use.
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PEM_read_bio_X509(bio, &cert, nullptr, nullptr);
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if (cert == nullptr) {
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printf("PEM_read_bio_X509 failed\n");
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return CURLE_ABORTED_BY_CALLBACK;
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}
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// Get a pointer to the current certificate verification storage
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store = SSL_CTX_get_cert_store(static_cast<SSL_CTX*>(sslctx));
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// Add the loaded certificate to the verification storage
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const int status = X509_STORE_add_cert(store, cert);
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if (status == 0) {
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printf("Error adding certificate\n");
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return CURLE_ABORTED_BY_CALLBACK;
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}
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// Decrement the reference count of the X509 structure cert and frees it up
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X509_free(cert);
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// Free the entire bio chain
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BIO_free(bio);
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// The CA certificate was loaded successfully into the verification storage
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return CURLE_OK;
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}
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} // namespace cpr
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#endif // OPENSSL_BACKEND_USED
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#endif // SUPPORT_CURLOPT_SSL_CTX_FUNCTION
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