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/**

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 * @file

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 *

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 * SSL transport implementation.

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 */

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#include "transport.h"

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#include <stdbool.h>

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/**

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 * SSL client credentials for use with ssl_client_credentials/sock_ssl_connect

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 */

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struct ssl_client_cred;

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/**

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 * Set up SSL client credentials for use with sock_ssl_connect. This includes information both required to identify

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 * ourselves to the server, as well as to verify the server.

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 *

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 * To verify the server's certificate, pass in a path to a file containing the CA certificate(s) that should be used to

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 * verify the server's certificate, and then either give `verify` as true to force verification, or false to simply

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 * warn. XXX: not entirely true

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 *

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 * To supply a client certificate to the server, pass in the paths to the cert/pkey files. If given as NULL, an

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 * anonymous client certificate will be used. Both must be supplied if given.

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 *

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 * The newly created SSL client credential will initially have a refcount of one, and can then be used with sock_ssl_connect.

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 *

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 * @param ctx_cred the newly created client credentials are returned via this

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 * @param cafile_path given as non-NULL to load trusted certs for verification from the given path

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 * @param verify force verification of the peer cert

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 * @param cert_path path to the client certificate file, or NULL

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 * @param pkey_path path to the client private key, or NULL

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 * @param err returned error info

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 */

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err_t ssl_client_cred_create (struct ssl_client_cred **ctx_cred,

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        const char *cafile_path, bool verify,

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        const char *cert_path, const char *pkey_path,

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        error_t *err

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);

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/**

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 * Aquire a referenec for the given cred.

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 */

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void ssl_client_cred_get (struct ssl_client_cred *cred);

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/**

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 * Release a reference allocated for the given cred.

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 */

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void ssl_client_cred_put (struct ssl_client_cred *cred);

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/**

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 * Start a non-blocking SSL connect/handshake to the given host/service. The socket will not yet be connected when the

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 * function returns, but rather, the eventual redyness/failure of the connect/handshake will be indicated later using

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 * the given \a cb_func.

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 *

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 * The given ssl_client_cred should either be NULL to use an anonymous client cert and not verify the server cert,

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 * or a ssl_client_cred allocated using ssl_client_cred_create(). The contexts are reference-counted, so once

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 * a cred context has been released, it will be destroyed once the last connection using it is destroyed.

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 * 

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 * @param info the transport setup info

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 * @param transport_ptr returned transport

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 * @param hostname the hostname to connect to

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 * @param service the TCP service name (i.e. port) to connect to

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 * @param cred the SSL client credentials to use, if not NULL

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 * @param err returned error info

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 */

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err_t ssl_connect (const struct transport_info *info, transport_t **transport_ptr, 

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        const char *hostname, const char *service,

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        struct ssl_client_cred *cred,

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        error_t *err

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    );

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