575 lines
21 KiB
C
575 lines
21 KiB
C
#define EFL_BETA_API_SUPPORT
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#include <Efl_Net.h>
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#include <Ecore_Getopt.h>
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#include <fcntl.h>
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static Eina_Bool echo = EINA_FALSE;
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static double timeout = 10.0;
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/* NOTE: client i/o events are only used as debug, you can omit these */
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static void
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_client_can_read_changed(void *data EINA_UNUSED, const Efl_Event *event)
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{
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fprintf(stderr, "INFO: client %s can_read=%d\n",
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efl_net_socket_address_remote_get(event->object),
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efl_io_reader_can_read_get(event->object));
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}
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static void
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_client_can_write_changed(void *data EINA_UNUSED, const Efl_Event *event)
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{
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fprintf(stderr, "INFO: client %s can_write=%d\n",
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efl_net_socket_address_remote_get(event->object),
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efl_io_writer_can_write_get(event->object));
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}
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static void
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_client_eos(void *data EINA_UNUSED, const Efl_Event *event)
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{
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fprintf(stderr, "INFO: client %s eos.\n",
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efl_net_socket_address_remote_get(event->object));
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}
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static void
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_client_read_finished(void *data EINA_UNUSED, const Efl_Event *event)
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{
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/* on _error() we close it, then do not read as it has nothing */
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if (efl_io_closer_closed_get(event->object))
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return;
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if (echo) return;
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fprintf(stderr,
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"-- BEGIN RECEIVED DATA --\n"
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EINA_SLICE_STR_FMT
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"-- END RECEIVED DATA--\n",
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EINA_SLICE_STR_PRINT(efl_io_buffered_stream_slice_get(event->object)));
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}
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static void
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_client_closed(void *data EINA_UNUSED, const Efl_Event *event)
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{
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fprintf(stderr, "INFO: client %s closed.\n",
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efl_net_socket_address_remote_get(event->object));
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}
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/* this is the only event that matters, from here we remove our extra
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* reference from the client and let it be deleted.
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*/
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static void
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_client_finished(void *data EINA_UNUSED, const Efl_Event *event)
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{
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fprintf(stderr, "INFO: client %s finished sending and receiving, remove extra reference.\n",
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efl_net_socket_address_remote_get(event->object));
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if (!efl_io_closer_closed_get(event->object))
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efl_io_closer_close(event->object);
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efl_unref(event->object);
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}
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/*
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* On errors, such as ETIMEDOUT, we want to close the client if not
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* happened yet.
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*/
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static void
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_client_error(void *data EINA_UNUSED, const Efl_Event *event)
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{
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Eina_Error *perr = event->info;
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fprintf(stderr, "ERROR: client %s error: %s\n",
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efl_net_socket_address_remote_get(event->object),
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eina_error_msg_get(*perr));
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if (!efl_io_closer_closed_get(event->object))
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efl_io_closer_close(event->object);
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}
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EFL_CALLBACKS_ARRAY_DEFINE(client_cbs,
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{ EFL_IO_READER_EVENT_CAN_READ_CHANGED, _client_can_read_changed },
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{ EFL_IO_READER_EVENT_EOS, _client_eos },
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{ EFL_IO_WRITER_EVENT_CAN_WRITE_CHANGED, _client_can_write_changed },
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{ EFL_IO_CLOSER_EVENT_CLOSED, _client_closed },
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{ EFL_IO_BUFFERED_STREAM_EVENT_READ_FINISHED, _client_read_finished },
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{ EFL_IO_BUFFERED_STREAM_EVENT_FINISHED, _client_finished },
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{ EFL_IO_BUFFERED_STREAM_EVENT_ERROR, _client_error });
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/* copier events are of interest, you should hook to at least "done"
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* and "error"
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*/
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/* echo copier is about the same socket, you can close it right away */
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static void
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_echo_copier_done(void *data EINA_UNUSED, const Efl_Event *event)
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{
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Eo *copier = event->object;
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fprintf(stderr, "INFO: echo copier done, close and del %p\n", copier);
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efl_del(copier); /* set to close_on_destructor, will auto close copier and client */
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}
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static void
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_echo_copier_error(void *data EINA_UNUSED, const Efl_Event *event)
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{
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Eo *copier = event->object;
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const Eina_Error *perr = event->info;
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if (*perr == ETIMEDOUT)
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{
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Eo *client = efl_io_copier_source_get(copier);
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fprintf(stderr, "INFO: client '%s' timed out, delete it.\n",
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efl_net_socket_address_remote_get(client));
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efl_del(copier);
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return;
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}
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efl_loop_quit(efl_loop_get(event->object), eina_value_int_init(EXIT_FAILURE));
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fprintf(stderr, "ERROR: echo copier %p failed %d '%s', close and del.\n",
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copier, *perr, eina_error_msg_get(*perr));
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efl_del(copier);
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}
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EFL_CALLBACKS_ARRAY_DEFINE(echo_copier_cbs,
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{ EFL_IO_COPIER_EVENT_DONE, _echo_copier_done },
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{ EFL_IO_COPIER_EVENT_ERROR, _echo_copier_error});
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/* server events are mandatory, afterall you need to define what's
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* going to happen after a client socket is connected. This is the
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* "client,add" event.
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*
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* if clients_limit and clients_reject_excess are set, then
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* "client,rejected" is dispatched for rejected sockets, they contain
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* the string with socket identification.
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*/
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static void
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_server_client_add(void *data EINA_UNUSED, const Efl_Event *event)
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{
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Efl_Net_Socket *client = event->info;
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fprintf(stderr, "INFO: accepted client %s\n",
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efl_net_socket_address_remote_get(client));
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/* to use a client, you must efl_ref() it. */
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efl_ref(client);
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/*
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* monitor the client if it's done and for debug purposes
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* (optional)
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*/
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efl_event_callback_array_add(client, client_cbs(), NULL);
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efl_io_buffered_stream_timeout_inactivity_set(client, timeout);
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/*
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* Since sockets are reader/writer/closer objects, we can use the
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* Efl_Io_Copier utility.
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*/
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if (echo)
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{
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/*
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* An echo copier is pretty simple, use the socket as both
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* source and destination.
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*
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* This is the same as efl_net_server_example.c
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*/
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Eo *echo_copier = efl_add(EFL_IO_COPIER_CLASS, efl_parent_get(client),
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efl_io_copier_source_set(efl_added, client),
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efl_io_copier_destination_set(efl_added, client),
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efl_event_callback_array_add(efl_added, echo_copier_cbs(), client),
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efl_io_closer_close_on_invalidate_set(efl_added, EINA_TRUE) /* we want to auto-close as we have a single copier */
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);
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fprintf(stderr, "INFO: using an echo copier=%p for client %s\n",
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echo_copier, efl_net_socket_address_remote_get(client));
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return;
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}
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else
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{
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/*
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* Here is where the "simple" kicks in, instead of all the
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* complexity listed in efl_net_server_example.c, we just
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* "write & forget" the "Hello World!" and wait for all data
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* to be received with a simple "finished" event.
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*/
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Eina_Slice slice = EINA_SLICE_STR_LITERAL("Hello World!");
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efl_io_writer_write(client, &slice, NULL);
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efl_io_buffered_stream_eos_mark(client); /* say that's it */
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}
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}
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static void
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_server_client_rejected(void *data EINA_UNUSED, const Efl_Event *event)
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{
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const char *client_address = event->info;
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fprintf(stderr, "INFO: rejected client %s\n", client_address);
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}
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static void
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_server_error(void *data EINA_UNUSED, const Efl_Event *event)
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{
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const Eina_Error *perr = event->info;
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fprintf(stderr, "ERROR: %d '%s'\n", *perr, eina_error_msg_get(*perr));
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efl_loop_quit(efl_loop_get(event->object), eina_value_int_init(EXIT_FAILURE));
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}
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static void
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_server_serving(void *data EINA_UNUSED, const Efl_Event *event)
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{
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fprintf(stderr, "INFO: serving at %s\n",
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efl_net_server_address_get(event->object));
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if (efl_class_get(event->object) == EFL_NET_SERVER_TCP_CLASS)
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{
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fprintf(stderr,
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"TCP options:\n"
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" - IPv6 only: %u\n",
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efl_net_server_ip_ipv6_only_get(event->object));
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}
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else if (efl_class_get(event->object) == EFL_NET_SERVER_UDP_CLASS)
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{
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Eina_Iterator *it;
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const char *str;
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fprintf(stderr,
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"UDP options:\n"
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" - IPv6 only: %u\n"
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" - don't route: %u\n"
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" - multicast TTL: %u\n"
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" - multicast loopback: %u\n"
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" - multicast groups:\n",
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efl_net_server_ip_ipv6_only_get(event->object),
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efl_net_server_udp_dont_route_get(event->object),
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efl_net_server_udp_multicast_time_to_live_get(event->object),
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efl_net_server_udp_multicast_loopback_get(event->object));
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it = efl_net_server_udp_multicast_groups_get(event->object);
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EINA_ITERATOR_FOREACH(it, str)
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fprintf(stderr, " * %s\n", str);
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eina_iterator_free(it);
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}
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}
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EFL_CALLBACKS_ARRAY_DEFINE(server_cbs,
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{ EFL_NET_SERVER_EVENT_CLIENT_ADD, _server_client_add },
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{ EFL_NET_SERVER_EVENT_CLIENT_REJECTED, _server_client_rejected },
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{ EFL_NET_SERVER_EVENT_SERVER_ERROR, _server_error },
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{ EFL_NET_SERVER_EVENT_SERVING, _server_serving });
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static const char * protocols[] = {
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"tcp",
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"udp",
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"ssl",
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#ifdef EFL_NET_SERVER_WINDOWS_CLASS
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"windows",
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#endif
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#ifdef EFL_NET_SERVER_UNIX_CLASS
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"unix",
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#endif
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NULL
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};
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static const char *ciphers_strs[] = {
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"auto",
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"tlsv1",
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"tlsv1.1",
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"tlsv1.2",
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NULL
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};
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static const Ecore_Getopt options = {
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"efl_net_server_example", /* program name */
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NULL, /* usage line */
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"1", /* version */
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"(C) 2016 Enlightenment Project", /* copyright */
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"BSD 2-Clause", /* license */
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/* long description, may be multiline and contain \n */
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"Example of Efl_Net_Server objects usage.\n"
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"\n"
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"This example spawns a server of the given protocol at the given address.",
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EINA_FALSE,
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{
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ECORE_GETOPT_STORE_TRUE('e', "echo",
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"Behave as 'echo' server, send back to client all the data receive"),
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ECORE_GETOPT_STORE_TRUE(0, "socket-activated",
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"Try to use $LISTEN_FDS from systemd, if not do a regular serve()"),
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ECORE_GETOPT_STORE_UINT('l', "clients-limit",
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"If set will limit number of clients to accept"),
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ECORE_GETOPT_STORE_TRUE('r', "clients-reject-excess",
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"Immediately reject excess clients (over limit)"),
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ECORE_GETOPT_STORE_FALSE(0, "ipv4-on-ipv6",
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"IPv4 clients will be automatically converted into IPv6 and handled transparently."),
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ECORE_GETOPT_STORE_DOUBLE('t', "inactivity-timeout",
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"The timeout in seconds to disconnect a client. The timeout is restarted for each client when there is some activity. It's particularly useful for UDP where there is no disconnection event."),
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ECORE_GETOPT_VERSION('V', "version"),
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ECORE_GETOPT_COPYRIGHT('C', "copyright"),
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ECORE_GETOPT_LICENSE('L', "license"),
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ECORE_GETOPT_HELP('h', "help"),
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ECORE_GETOPT_CATEGORY("udp", "UDP options"),
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ECORE_GETOPT_STORE_TRUE(0, "udp-dont-route",
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"If true, datagrams won't be routed using a gateway, being restricted to the local network."),
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ECORE_GETOPT_STORE_UINT(0, "udp-multicast-ttl",
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"Multicast time to live in number of hops from 0-255. Defaults to 1 (only local network)."),
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ECORE_GETOPT_STORE_FALSE(0, "udp-multicast-noloopback",
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"Disable multicast loopback."),
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ECORE_GETOPT_APPEND('M', "udp-multicast-group", "Join a multicast group in the form 'IP@INTERFACE', with optional '@INTERFACE', where INTERFACE is the IP address of the interface to join the multicast.", ECORE_GETOPT_TYPE_STR),
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ECORE_GETOPT_CATEGORY("ssl", "SSL options"),
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ECORE_GETOPT_CHOICE('c', "ssl-cipher", "Cipher to use, defaults to 'auto'", ciphers_strs),
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ECORE_GETOPT_APPEND(0, "ssl-certificate", "certificate path to use.", ECORE_GETOPT_TYPE_STR),
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ECORE_GETOPT_APPEND(0, "ssl-private-key", "private key path to use.", ECORE_GETOPT_TYPE_STR),
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ECORE_GETOPT_APPEND(0, "ssl-crl", "certificate revocation list to use.", ECORE_GETOPT_TYPE_STR),
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ECORE_GETOPT_APPEND(0, "ssl-ca", "certificate authorities path to use.", ECORE_GETOPT_TYPE_STR),
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ECORE_GETOPT_CHOICE_METAVAR(0, NULL, "The server protocol.", "protocol",
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protocols),
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ECORE_GETOPT_STORE_METAVAR_STR(0, NULL,
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"The server address to listen, such as "
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"IPv4:PORT, [IPv6]:PORT, Unix socket path...",
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"address"),
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ECORE_GETOPT_SENTINEL
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}
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};
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static Eo *simple_server = NULL;
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EAPI_MAIN void
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efl_pause(void *data EINA_UNUSED,
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const Efl_Event *ev EINA_UNUSED)
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{
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}
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EAPI_MAIN void
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efl_resume(void *data EINA_UNUSED,
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const Efl_Event *ev EINA_UNUSED)
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{
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}
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EAPI_MAIN void
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efl_terminate(void *data EINA_UNUSED,
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const Efl_Event *ev EINA_UNUSED)
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{
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/* FIXME: For the moment the main loop doesn't get
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properly destroyed on shutdown which disallow
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relying on parent destroying their children */
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if (simple_server)
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{
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efl_del(simple_server);
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simple_server = NULL;
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}
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fprintf(stderr, "INFO: main loop finished.\n");
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}
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EAPI_MAIN void
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efl_main(void *data EINA_UNUSED,
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const Efl_Event *ev)
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{
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const Efl_Class *cls;
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char *protocol = NULL;
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char *address = NULL;
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Eina_List *udp_mcast_groups = NULL;
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char *str;
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unsigned int clients_limit = 0;
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unsigned udp_mcast_ttl = 1;
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Eina_Bool clients_reject_excess = EINA_FALSE;
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Eina_Bool ipv6_only = EINA_TRUE;
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Eina_Bool udp_dont_route = EINA_FALSE;
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Eina_Bool udp_mcast_loopback = EINA_TRUE;
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Eina_List *certificates = NULL;
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Eina_List *private_keys = NULL;
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Eina_List *crls = NULL;
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Eina_List *cas = NULL;
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char *cipher_choice = NULL;
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Eina_Bool socket_activated = EINA_FALSE;
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Eina_Bool quit_option = EINA_FALSE;
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Ecore_Getopt_Value values[] = {
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ECORE_GETOPT_VALUE_BOOL(echo),
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ECORE_GETOPT_VALUE_BOOL(socket_activated),
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ECORE_GETOPT_VALUE_UINT(clients_limit),
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ECORE_GETOPT_VALUE_BOOL(clients_reject_excess),
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ECORE_GETOPT_VALUE_BOOL(ipv6_only),
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ECORE_GETOPT_VALUE_DOUBLE(timeout),
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/* standard block to provide version, copyright, license and help */
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ECORE_GETOPT_VALUE_BOOL(quit_option), /* -V/--version quits */
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ECORE_GETOPT_VALUE_BOOL(quit_option), /* -C/--copyright quits */
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ECORE_GETOPT_VALUE_BOOL(quit_option), /* -L/--license quits */
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ECORE_GETOPT_VALUE_BOOL(quit_option), /* -h/--help quits */
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ECORE_GETOPT_VALUE_BOOL(quit_option), /* category: udp */
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ECORE_GETOPT_VALUE_BOOL(udp_dont_route),
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ECORE_GETOPT_VALUE_UINT(udp_mcast_ttl),
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ECORE_GETOPT_VALUE_BOOL(udp_mcast_loopback),
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ECORE_GETOPT_VALUE_LIST(udp_mcast_groups),
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ECORE_GETOPT_VALUE_BOOL(quit_option), /* category: ssl */
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ECORE_GETOPT_VALUE_STR(cipher_choice),
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ECORE_GETOPT_VALUE_LIST(certificates),
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ECORE_GETOPT_VALUE_LIST(private_keys),
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ECORE_GETOPT_VALUE_LIST(crls),
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ECORE_GETOPT_VALUE_LIST(cas),
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/* positional argument */
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ECORE_GETOPT_VALUE_STR(protocol),
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ECORE_GETOPT_VALUE_STR(address),
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ECORE_GETOPT_VALUE_NONE /* sentinel */
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};
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int args;
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Eo *server;
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Eina_Error err;
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args = ecore_getopt_parse(&options, values, 0, NULL);
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if (args < 0)
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{
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fputs("ERROR: Could not parse command line options.\n", stderr);
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goto end;
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}
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if (quit_option) goto end;
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args = ecore_getopt_parse_positional(&options, values, 0, NULL, args);
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if (args < 0)
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{
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fputs("ERROR: Could not parse positional arguments.\n", stderr);
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goto end;
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}
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if (!protocol)
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{
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fputs("ERROR: missing protocol.\n", stderr);
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goto end;
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}
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if (strcmp(protocol, "tcp") == 0) cls = EFL_NET_SERVER_TCP_CLASS;
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else if (strcmp(protocol, "udp") == 0) cls = EFL_NET_SERVER_UDP_CLASS;
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else if (strcmp(protocol, "ssl") == 0) cls = EFL_NET_SERVER_SSL_CLASS;
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#ifdef EFL_NET_SERVER_WINDOWS_CLASS
|
|
else if (strcmp(protocol, "windows") == 0) cls = EFL_NET_SERVER_WINDOWS_CLASS;
|
|
#endif
|
|
#ifdef EFL_NET_SERVER_UNIX_CLASS
|
|
else if (strcmp(protocol, "unix") == 0) cls = EFL_NET_SERVER_UNIX_CLASS;
|
|
#endif
|
|
else
|
|
{
|
|
fprintf(stderr, "ERROR: unsupported protocol: %s\n", protocol);
|
|
goto end;
|
|
}
|
|
|
|
simple_server = efl_add(EFL_NET_SERVER_SIMPLE_CLASS, ev->object, /* it's mandatory to use a main loop provider as the server parent */
|
|
efl_net_server_simple_inner_class_set(efl_added, cls), /* alternatively you could create the inner server and set with efl_net_server_simple_inner_server_set() */
|
|
efl_net_server_clients_limit_set(efl_added,
|
|
clients_limit,
|
|
clients_reject_excess), /* optional */
|
|
efl_event_callback_array_add(efl_added, server_cbs(), NULL)); /* mandatory to have "client,add" in order to be useful */
|
|
if (!simple_server)
|
|
{
|
|
fprintf(stderr, "ERROR: could not create simple server for class %p (%s)\n",
|
|
cls, efl_class_name_get(cls));
|
|
goto end;
|
|
}
|
|
|
|
/* get the inner server so we can configure it for each protocol */
|
|
server = efl_net_server_simple_inner_server_get(simple_server);
|
|
|
|
if (cls == EFL_NET_SERVER_TCP_CLASS)
|
|
{
|
|
efl_net_server_ip_ipv6_only_set(server, ipv6_only);
|
|
efl_net_server_fd_reuse_address_set(server, EINA_TRUE); /* optional, but nice for testing */
|
|
efl_net_server_fd_reuse_port_set(server, EINA_TRUE); /* optional, but nice for testing... not secure unless you know what you're doing */
|
|
|
|
if (socket_activated) efl_net_server_fd_socket_activate(server, address);
|
|
}
|
|
else if (cls == EFL_NET_SERVER_UDP_CLASS)
|
|
{
|
|
const Eina_List *lst;
|
|
|
|
efl_net_server_ip_ipv6_only_set(server, ipv6_only);
|
|
efl_net_server_udp_dont_route_set(server, udp_dont_route);
|
|
|
|
efl_net_server_udp_multicast_time_to_live_set(server, udp_mcast_ttl);
|
|
efl_net_server_udp_multicast_loopback_set(server, udp_mcast_loopback);
|
|
|
|
EINA_LIST_FOREACH(udp_mcast_groups, lst, str)
|
|
efl_net_server_udp_multicast_join(server, str);
|
|
|
|
efl_net_server_fd_reuse_address_set(server, EINA_TRUE); /* optional, but nice for testing */
|
|
efl_net_server_fd_reuse_port_set(server, EINA_TRUE); /* optional, but nice for testing... not secure unless you know what you're doing */
|
|
if (socket_activated) efl_net_server_fd_socket_activate(server, address);
|
|
}
|
|
else if (cls == EFL_NET_SERVER_SSL_CLASS)
|
|
{
|
|
Eo *ssl_ctx;
|
|
Efl_Net_Ssl_Cipher cipher = EFL_NET_SSL_CIPHER_AUTO;
|
|
if (cipher_choice)
|
|
{
|
|
if (strcmp(cipher_choice, "auto") == 0)
|
|
cipher = EFL_NET_SSL_CIPHER_AUTO;
|
|
else if (strcmp(cipher_choice, "tlsv1") == 0)
|
|
cipher = EFL_NET_SSL_CIPHER_TLSV1;
|
|
else if (strcmp(cipher_choice, "tlsv1.1") == 0)
|
|
cipher = EFL_NET_SSL_CIPHER_TLSV1_1;
|
|
else if (strcmp(cipher_choice, "tlsv1.2") == 0)
|
|
cipher = EFL_NET_SSL_CIPHER_TLSV1_2;
|
|
}
|
|
|
|
ssl_ctx = efl_add_ref(EFL_NET_SSL_CONTEXT_CLASS, NULL,
|
|
efl_net_ssl_context_certificates_set(efl_added, eina_list_iterator_new(certificates)),
|
|
efl_net_ssl_context_private_keys_set(efl_added, eina_list_iterator_new(private_keys)),
|
|
efl_net_ssl_context_certificate_revocation_lists_set(efl_added, eina_list_iterator_new(crls)),
|
|
efl_net_ssl_context_certificate_authorities_set(efl_added, eina_list_iterator_new(cas)),
|
|
efl_net_ssl_context_setup(efl_added, cipher, EINA_FALSE /* a server! */));
|
|
|
|
efl_net_server_ssl_context_set(server, ssl_ctx);
|
|
|
|
efl_net_server_fd_reuse_address_set(server, EINA_TRUE); /* optional, but nice for testing */
|
|
efl_net_server_fd_reuse_port_set(server, EINA_TRUE); /* optional, but nice for testing... not secure unless you know what you're doing */
|
|
if (socket_activated) efl_net_server_fd_socket_activate(server, address);
|
|
}
|
|
#ifdef EFL_NET_SERVER_UNIX_CLASS
|
|
else if (cls == EFL_NET_SERVER_UNIX_CLASS)
|
|
{
|
|
efl_net_server_unix_unlink_before_bind_set(server, EINA_TRUE); /* makes testing easier */
|
|
if (socket_activated) efl_net_server_fd_socket_activate(server, address);
|
|
}
|
|
#endif
|
|
|
|
/* an explicit call to efl_net_server_serve() after the object is
|
|
* constructed allows for more complex setup, such as interacting
|
|
* with the object to add more properties that couldn't be done
|
|
* during efl_add().
|
|
*/
|
|
if (!efl_net_server_serving_get(simple_server))
|
|
{
|
|
if (socket_activated)
|
|
fprintf(stderr, "WARNING: --socket-activated, but not able to use $LISTEN_FDS descriptors. Try to start the server...\n");
|
|
|
|
err = efl_net_server_serve(simple_server, address);
|
|
if (err)
|
|
{
|
|
fprintf(stderr, "ERROR: could not serve(%s): %s\n",
|
|
address, eina_error_msg_get(err));
|
|
goto end_server;
|
|
}
|
|
}
|
|
|
|
return ;
|
|
|
|
end_server:
|
|
efl_del(simple_server);
|
|
simple_server = NULL;
|
|
|
|
end:
|
|
EINA_LIST_FREE(udp_mcast_groups, str)
|
|
free(str);
|
|
|
|
efl_loop_quit(ev->object, eina_value_int_init(EXIT_FAILURE));
|
|
}
|
|
|
|
EFL_MAIN_EX();
|