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/*
* gensio - A library for abstracting stream I/O
* Copyright (C) 2018 Corey Minyard <minyard@acm.org>
*
* SPDX-License-Identifier: LGPL-2.1-only
*/
#include "config.h"
#include <gensio/gensio_class.h>
#include <gensio/gensio_ll_gensio.h>
#include <gensio/gensio_acc_gensio.h>
#include <gensio/argvutils.h>
#include <gensio/gensio_builtins.h>
#include "gensio_filter_trace.h"
int
trace_gensio_alloc(struct gensio *child, const char *const args[],
struct gensio_os_funcs *o,
gensio_event cb, void *user_data,
struct gensio **net)
{
int err;
struct gensio_filter *filter;
struct gensio_ll *ll;
struct gensio *io;
err = gensio_trace_filter_alloc(o, args, &filter);
if (err)
return err;
ll = gensio_gensio_ll_alloc(o, child);
if (!ll) {
gensio_filter_free(filter);
return GE_NOMEM;
}
gensio_ref(child); /* So gensio_ll_free doesn't free the child if fail */
io = base_gensio_alloc(o, ll, filter, child, "trace", cb, user_data);
if (!io) {
gensio_ll_free(ll);
gensio_filter_free(filter);
return GE_NOMEM;
}
gensio_set_attr_from_child(io, child);
gensio_free(child); /* Lose the ref we acquired. */
*net = io;
return 0;
}
int
str_to_trace_gensio(const char *str, const char * const args[],
struct gensio_os_funcs *o,
gensio_event cb, void *user_data,
struct gensio **new_gensio)
{
int err;
struct gensio *io2;
err = str_to_gensio(str, o, NULL, NULL, &io2);
if (err)
return err;
err = trace_gensio_alloc(io2, args, o, cb, user_data, new_gensio);
if (err)
gensio_free(io2);
return err;
}
struct tracena_data {
struct gensio_accepter *acc;
const char **args;
struct gensio_os_funcs *o;
};
static void
tracena_free(void *acc_data)
{
struct tracena_data *nadata = acc_data;
if (nadata->args)
gensio_argv_free(nadata->o, nadata->args);
nadata->o->free(nadata->o, nadata);
}
static int
tracena_alloc_gensio(void *acc_data, const char * const *iargs,
struct gensio *child, struct gensio **rio)
{
struct tracena_data *nadata = acc_data;
return trace_gensio_alloc(child, iargs, nadata->o, NULL, NULL, rio);
}
static int
tracena_new_child(void *acc_data, void **finish_data,
struct gensio_filter **filter)
{
struct tracena_data *nadata = acc_data;
return gensio_trace_filter_alloc(nadata->o, nadata->args, filter);
}
static int
tracena_finish_parent(void *acc_data, void *finish_data, struct gensio *io)
{
gensio_set_is_packet(io, true);
return 0;
}
static int
gensio_gensio_acc_trace_cb(void *acc_data, int op, void *data1, void *data2,
void *data3, const void *data4)
{
switch (op) {
case GENSIO_GENSIO_ACC_ALLOC_GENSIO:
return tracena_alloc_gensio(acc_data, data4, data1, data2);
case GENSIO_GENSIO_ACC_NEW_CHILD:
return tracena_new_child(acc_data, data1, data2);
case GENSIO_GENSIO_ACC_FINISH_PARENT:
return tracena_finish_parent(acc_data, data1, data2);
case GENSIO_GENSIO_ACC_FREE:
tracena_free(acc_data);
return 0;
default:
return GE_NOTSUP;
}
}
int
trace_gensio_accepter_alloc(struct gensio_accepter *child,
const char * const args[],
struct gensio_os_funcs *o,
gensio_accepter_event cb, void *user_data,
struct gensio_accepter **accepter)
{
struct tracena_data *nadata;
int err;
nadata = o->zalloc(o, sizeof(*nadata));
if (!nadata)
return GE_NOMEM;
err = gensio_argv_copy(o, args, NULL, &nadata->args);
if (err) {
o->free(o, nadata);
return err;
}
nadata->o = o;
err = gensio_gensio_accepter_alloc(child, o, "trace", cb, user_data,
gensio_gensio_acc_trace_cb, nadata,
&nadata->acc);
if (err)
goto out_err;
gensio_acc_set_is_reliable(nadata->acc, gensio_acc_is_reliable(child));
gensio_acc_set_is_packet(nadata->acc, gensio_acc_is_packet(child));
gensio_acc_set_is_message(nadata->acc, gensio_acc_is_message(child));
*accepter = nadata->acc;
return 0;
out_err:
tracena_free(nadata);
return err;
}
int
str_to_trace_gensio_accepter(const char *str, const char * const args[],
struct gensio_os_funcs *o,
gensio_accepter_event cb,
void *user_data,
struct gensio_accepter **acc)
{
int err;
struct gensio_accepter *acc2 = NULL;
err = str_to_gensio_accepter(str, o, NULL, NULL, &acc2);
if (!err) {
err = trace_gensio_accepter_alloc(acc2, args, o, cb, user_data, acc);
if (err)
gensio_acc_free(acc2);
}
return err;
}
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