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#include <Efl_Net.h>
#include <Ecore_Getopt.h>
static int retval = EXIT_SUCCESS;
static Eina_List *commands = NULL;
static Eina_Slice line_delimiter;
static Eo *stream = NULL;
static void
_command_next(void)
{
Eina_Slice slice;
char *cmd;
if (!commands)
{
efl_io_buffered_stream_eos_mark(stream);
return;
}
cmd = commands->data;
commands = eina_list_remove_list(commands, commands);
slice = (Eina_Slice)EINA_SLICE_STR(cmd);
efl_io_writer_write(stream, &slice, NULL);
fprintf(stderr, "INFO: sent '" EINA_SLICE_STR_FMT "'\n",
EINA_SLICE_STR_PRINT(slice));
/* don't use line_delimiter directly, 'len' may be changed! */
slice = line_delimiter;
efl_io_writer_write(stream, &slice, NULL);
free(cmd);
}
static void
_receiver_data(void *data EINA_UNUSED, const Efl_Event *event)
{
Eina_Slice slice = efl_io_buffered_stream_slice_get(event->object);
/* this will happen when we're called when we issue our own
* efl_io_buffered_stream_clear() below.
*/
if (slice.len == 0) return;
/*
* If the server didn't send us the line terminator and closed the
* connection (ie: efl_io_reader_eos_get() == true) or if the
* efl_io_buffered_stream_max_queue_size_input_set() was reached,
* then we may have a line without a trailing delimiter. Check for
* that.
*/
if (!eina_slice_endswith(slice, line_delimiter))
{
fprintf(stderr, "WARNING: received without line-delimiter '"
EINA_SLICE_STR_FMT "'\n",
EINA_SLICE_STR_PRINT(slice));
}
else
{
slice.len -= line_delimiter.len;
fprintf(stderr, "INFO: received '" EINA_SLICE_STR_FMT "'\n",
EINA_SLICE_STR_PRINT(slice));
}
efl_io_buffered_stream_clear(event->object);
_command_next();
}
static void
_dialer_connected(void *data EINA_UNUSED, const Efl_Event *event)
{
fprintf(stderr, "INFO: connected to %s (%s)\n",
efl_net_dialer_address_dial_get(event->object),
efl_net_socket_address_remote_get(event->object));
_command_next();
}
static void
_stream_write_finished(void *data EINA_UNUSED, const Efl_Event *event)
{
fprintf(stderr, "INFO: %s done sending\n", efl_name_get(event->object));
}
static void
_stream_error(void *data EINA_UNUSED, const Efl_Event *event)
{
const Eina_Error *perr = event->info;
fprintf(stderr, "INFO: %s error: #%d '%s'\n",
efl_name_get(event->object), *perr, eina_error_msg_get(*perr));
retval = EXIT_FAILURE;
efl_loop_quit(efl_loop_get(event->object), EINA_VALUE_EMPTY);
}
static void
_stream_eos(void *data EINA_UNUSED, const Efl_Event *event)
{
fprintf(stderr, "INFO: %s eos, quit\n", efl_name_get(event->object));
efl_loop_quit(efl_loop_get(event->object), EINA_VALUE_EMPTY);
}
EFL_CALLBACKS_ARRAY_DEFINE(stream_cbs,
{ EFL_IO_BUFFERED_STREAM_EVENT_LINE, _receiver_data },
{ EFL_IO_READER_EVENT_EOS, _stream_eos },
{ EFL_IO_BUFFERED_STREAM_EVENT_WRITE_FINISHED, _stream_write_finished },
{ EFL_IO_BUFFERED_STREAM_EVENT_ERROR, _stream_error });
static char *
_unescape(const char *str)
{
char *ret = strdup(str);
char *c, *w;
Eina_Bool escaped = EINA_FALSE;
for (c = ret, w = ret; *c != '\0'; c++)
{
if (escaped)
{
escaped = EINA_FALSE;
switch (*c)
{
case 'n': *w = '\n'; break;
case 'r': *w = '\r'; break;
case 't': *w = '\t'; break;
default: w++; /* no change */
}
w++;
}
else
{
if (*c == '\\')
escaped = EINA_TRUE;
else
w++;
}
}
*w = '\0';
return ret;
}
static const Ecore_Getopt options = {
"efl_io_buffered_stream_example", /* program name */
NULL, /* usage line */
"1", /* version */
"(C) 2016 Enlightenment Project", /* copyright */
"BSD 2-Clause", /* license */
/* long description, may be multiline and contain \n */
"Example of Efl_Io_Buffered_Stream usage.\n"
"\n"
"This uses Efl_Io_Buffered_Stream to easily interface with Efl_Net_Dialer_Tcp.",
EINA_FALSE,
{
ECORE_GETOPT_STORE_STR('d', "line-delimiter",
"Changes the line delimiter to be used in both send and receive. Defaults to \\r\\n"),
ECORE_GETOPT_STORE_ULONG('l', "buffer-limit",
"If set will limit buffer size to this limit of bytes. If used alongside with --line-delimiter and that delimiter was not found but bffer limit was reached, the line event will be triggered without the delimiter at the end."),
ECORE_GETOPT_VERSION('V', "version"),
ECORE_GETOPT_COPYRIGHT('C', "copyright"),
ECORE_GETOPT_LICENSE('L', "license"),
ECORE_GETOPT_HELP('h', "help"),
ECORE_GETOPT_STORE_METAVAR_STR(0, NULL,
"The server address as\n"
"IP:PORT to connect using TCP and an IPv4 (A.B.C.D:PORT) or IPv6 ([A:B:C:D::E]:PORT).\n",
"server_address"),
ECORE_GETOPT_APPEND_METAVAR(0, NULL,
"Commands to send",
"commands",
ECORE_GETOPT_TYPE_STR),
ECORE_GETOPT_SENTINEL
}
};
EAPI_MAIN void
efl_main(void *data EINA_UNUSED,
const Efl_Event *ev)
{
char *address = NULL;
char *line_delimiter_str = NULL;
char *cmd;
unsigned long buffer_limit = 0;
Eina_Bool quit_option = EINA_FALSE;
Ecore_Getopt_Value values[] = {
ECORE_GETOPT_VALUE_STR(line_delimiter_str),
ECORE_GETOPT_VALUE_ULONG(buffer_limit),
/* standard block to provide version, copyright, license and help */
ECORE_GETOPT_VALUE_BOOL(quit_option), /* -V/--version quits */
ECORE_GETOPT_VALUE_BOOL(quit_option), /* -C/--copyright quits */
ECORE_GETOPT_VALUE_BOOL(quit_option), /* -L/--license quits */
ECORE_GETOPT_VALUE_BOOL(quit_option), /* -h/--help quits */
/* positional argument */
ECORE_GETOPT_VALUE_STR(address),
ECORE_GETOPT_VALUE_LIST(commands),
ECORE_GETOPT_VALUE_NONE /* sentinel */
};
Eina_Error err;
int args;
Eo *dialer;
args = ecore_getopt_parse(&options, values, 0, NULL);
if (args < 0)
{
fputs("ERROR: Could not parse command line options.\n", stderr);
retval = EXIT_FAILURE;
goto end;
}
if (quit_option) goto end;
args = ecore_getopt_parse_positional(&options, values, 0, NULL, args);
if (args < 0)
{
fputs("ERROR: Could not parse positional arguments.\n", stderr);
retval = EXIT_FAILURE;
goto end;
}
line_delimiter_str = _unescape(line_delimiter_str ? line_delimiter_str : "\\r\\n");
if (!commands)
{
fputs("ERROR: missing commands to send.\n", stderr);
retval = EXIT_FAILURE;
goto end;
}
/*
* some objects such as the Efl.Io.Buffered_Stream and
* Efl.Net.Dialer.Tcp depend on main loop, thus their parent must
* be a loop provider. We use the loop itself that come from event.
*/
/* The TCP client to use to send/receive network data */
dialer = efl_add(EFL_NET_DIALER_TCP_CLASS, ev->object,
efl_name_set(efl_added, "dialer"),
efl_event_callback_add(efl_added, EFL_NET_DIALER_EVENT_DIALER_CONNECTED, _dialer_connected, NULL));
if (!dialer)
{
fprintf(stderr, "ERROR: could not create Efl_Net_Dialer_Tcp\n");
retval = EXIT_FAILURE;
goto end;
}
line_delimiter = (Eina_Slice)EINA_SLICE_STR(line_delimiter_str);
/*
* Without the buffered stream we'd have to create two Efl.Io.Queue
* ourselves, as well as two Efl.Io.Copier to link them with the
* dialer.
*
* Our example's usage is to write each command at once followed by
* the line_delimiter, then wait for a reply from the server, then
* write another.
*
* On incoming data we peek at it with slice_get() and then clear().
*/
stream = efl_add(EFL_IO_BUFFERED_STREAM_CLASS, ev->object,
efl_name_set(efl_added, "stream"),
efl_io_buffered_stream_inner_io_set(efl_added, dialer), /* mandatory! */
efl_io_buffered_stream_line_delimiter_set(efl_added, line_delimiter),
efl_io_buffered_stream_max_queue_size_input_set(efl_added, buffer_limit),
efl_io_buffered_stream_max_queue_size_output_set(efl_added, buffer_limit),
efl_event_callback_array_add(efl_added, stream_cbs(), NULL));
if (!stream)
{
fprintf(stderr, "ERROR: could not create Efl_Io_Buffered_Stream\n");
retval = EXIT_FAILURE;
goto error_stream;
}
/*
* From here on it's mostly the same all Efl_Io_Copier would do,
* check efl_io_copier_simple_example.c and efl_io_copier_example.c
*/
err = efl_net_dialer_dial(dialer, address);
if (err)
{
fprintf(stderr, "ERROR: could not dial %s: %s\n",
address, eina_error_msg_get(err));
goto error_dialing;
}
return ;
error_dialing:
efl_io_closer_close(stream);
efl_del(stream);
error_stream:
efl_del(dialer);
end:
EINA_LIST_FREE(commands, cmd)
{
fprintf(stderr, "ERROR: unsent command: %s\n", cmd);
free(cmd);
}
efl_loop_quit(ev->object, eina_value_int_init(retval));
}
EFL_MAIN();