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OpenSSL3 can in fact have both enabled at once. Load the provider and key/cert appropriately. When loading a provider, the user can now also set an associated "property string". Work on this was sponsored by Valantic. Closes #17165
83 lines
1.8 KiB
Markdown
83 lines
1.8 KiB
Markdown
---
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c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
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SPDX-License-Identifier: curl
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Title: CURLOPT_SSLENGINE
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Section: 3
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Source: libcurl
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See-also:
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- CURLINFO_SSL_ENGINES (3)
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- CURLOPT_SSLENGINE_DEFAULT (3)
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- CURLOPT_SSLKEY (3)
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Protocol:
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- TLS
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TLS-backend:
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- OpenSSL
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Added-in: 7.9.3
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---
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# NAME
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CURLOPT_SSLENGINE - Set SSL engine or provider
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# SYNOPSIS
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~~~c
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#include <curl/curl.h>
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CURLcode curl_easy_setopt(CURL *handle, CURLOPT_SSLENGINE, char *id);
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~~~
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# DESCRIPTION
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Pass a pointer to a null-terminated string as parameter. It is used as the
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identifier for the *engine* or *provider* you want to use for your private
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key. OpenSSL 1 had engines, OpenSSL 3 has providers.
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The application does not have to keep the string around after setting this
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option.
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When asking libcurl to use a provider, the application can also optionally
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provide a *property*, a set of name value pairs. Such a property can be
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specified separated from the name with a colon (`:`).
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Using this option multiple times makes the last set string override the
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previous ones. Set it to NULL to disable its use again.
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# DEFAULT
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NULL
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# %PROTOCOLS%
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# EXAMPLE
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~~~c
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int main(void)
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{
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CURL *curl = curl_easy_init();
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if(curl) {
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CURLcode res;
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curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/");
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curl_easy_setopt(curl, CURLOPT_SSLENGINE, "dynamic");
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res = curl_easy_perform(curl);
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curl_easy_cleanup(curl);
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}
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}
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~~~
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# %AVAILABILITY%
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# RETURN VALUE
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CURLE_OK - Engine found.
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CURLE_SSL_ENGINE_NOTFOUND - Engine not found, or OpenSSL was not built with
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engine support.
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CURLE_SSL_ENGINE_INITFAILED - Engine found but initialization failed.
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CURLE_NOT_BUILT_IN - Option not built in, OpenSSL is not the SSL backend.
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CURLE_UNKNOWN_OPTION - Option not recognized.
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CURLE_OUT_OF_MEMORY - Insufficient heap space.
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