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/*
* plugin-api.h: plugin API for ponymap
*
* Copyright (c) 2014, Přemysl Janouch <p.janouch@gmail.com>
* All rights reserved.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
*/
// This API is meant to be as simplistic as is realistically possible.
/// The version of the API, and by extension, of all the following structs
#define API_VERSION 1
///< Opaque object with data relating to a service scan
struct unit;
enum
{
SERVICE_SUPPORTS_TLS = (1 << 0) ///< Plain TLS can be used
};
struct service
{
const char *name; ///< Name of the service
int flags; ///< Service flags
// scan_init -> on_data* -> [on_eof/on_error] -> on_aborted -> scan_free
/// Initialize a scan, returning a handle to it
void *(*scan_init) (struct unit *u);
/// Destroy the handle created for the scan
void (*scan_free) (void *handle);
/// We have received some data from the peer
void (*on_data) (void *handle, struct unit *u, struct str *data);
/// Server has closed the connection
void (*on_eof) (void *handle, struct unit *u);
/// Network or other error has occured
void (*on_error) (void *handle, struct unit *u);
/// The scan has been aborted
void (*on_aborted) (void *handle, struct unit *u);
};
struct plugin_api
{
/// Register the plugin for a service
void (*register_service) (void *ctx, struct service *info);
/// Send some data to the peer
ssize_t (*unit_write) (struct unit *u, const void *buf, size_t len);
/// Mark the scan as un/successful
void (*unit_set_success) (struct unit *u, bool success);
/// Add some information resulting from the scan
void (*unit_add_info) (struct unit *u, const char *result);
/// Abort the scan, close the connection
void (*unit_abort) (struct unit *u);
};
struct plugin_info
{
/// Version of the API used by this plugin
int32_t api_version;
/// Let the plugin initialize itself and register any services.
/// The context needs to be passed to the relevant API functions.
bool (*initialize) (void *ctx, struct plugin_api *api);
};
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