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/*! \file fsm_ctrl_commands.c */
/* (C) 2017 by Harald Welte <laforge@gnumonks.org>
* All Rights Reserved
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <string.h>
#include <errno.h>
#include <osmocom/core/fsm.h>
#include <osmocom/ctrl/control_cmd.h>
#include <osmocom/ctrl/control_if.h>
/*! control interface lookup function for FSM's
* \param[in] data Private data passed to controlif_setup()
* \param[in] vline Vector of the line holding the command string
* \param[out] node_type type (CTRL_NODE_) that was determined
* \param[out] node_data private data of node that was determined
* \param i Current index into vline, up to which it is parsed
*/
static int fsm_ctrl_node_lookup(void *data, vector vline, int *node_type,
void **node_data, int *i)
{
struct osmo_fsm *fsm = NULL;
struct osmo_fsm_inst *fi = NULL;;
const char *token = vector_slot(vline, *i);
switch (*node_type) {
case CTRL_NODE_ROOT:
if (!strcmp(token, "fsm")) {
const char *fsm_name;
(*i)++;
fsm_name = vector_lookup(vline, *i);
if (!fsm_name)
return -ERANGE;
fsm = osmo_fsm_find_by_name(fsm_name);
if (!fsm)
return -ENODEV;
*node_data = fsm;
*node_type = CTRL_NODE_FSM;
} else
return 0;
break;
case CTRL_NODE_FSM:
fsm = *node_data;
if (!strcmp(token, "name")) {
const char *inst_name;
(*i)++;
inst_name = vector_lookup(vline, *i);
if (!inst_name)
return -ERANGE;
fi = osmo_fsm_inst_find_by_name(fsm, inst_name);
if (!fi)
return -ENODEV;
*node_data = fi;
*node_type = CTRL_NODE_FSM_INST;
} else if (!strcmp(token, "id")) {
const char *inst_id;
(*i)++;
inst_id = vector_lookup(vline, *i);
if (!inst_id)
return -ERANGE;
fi = osmo_fsm_inst_find_by_id(fsm, inst_id);
if (!fi)
return -ENODEV;
*node_data = fi;
*node_type = CTRL_NODE_FSM_INST;
}
break;
default:
return 0;
}
return 1;
}
static int get_fsm_inst_state(struct ctrl_cmd *cmd, void *data)
{
struct osmo_fsm_inst *fi = cmd->node;
if (!fi) {
cmd->reply = "No such FSM found";
return CTRL_CMD_ERROR;
}
cmd->reply = talloc_strdup(cmd, osmo_fsm_state_name(fi->fsm, fi->state));
return CTRL_CMD_REPLY;
}
CTRL_CMD_DEFINE_RO(fsm_inst_state, "state");
static int get_fsm_inst_parent_name(struct ctrl_cmd *cmd, void *data)
{
struct osmo_fsm_inst *fi = cmd->node;
if (!fi) {
cmd->reply = "No such FSM found";
return CTRL_CMD_ERROR;
}
if (!fi->proc.parent) {
cmd->reply = "No parent";
return CTRL_CMD_ERROR;
}
cmd->reply = talloc_strdup(cmd, fi->proc.parent->name);
return CTRL_CMD_REPLY;
}
CTRL_CMD_DEFINE_RO(fsm_inst_parent_name, "parent-name");
static int get_fsm_inst_timer(struct ctrl_cmd *cmd, void *data)
{
struct osmo_fsm_inst *fi = cmd->node;
struct timeval remaining;
if (!fi) {
cmd->reply = "No such FSM found";
return CTRL_CMD_ERROR;
}
if (osmo_timer_remaining(&fi->timer, NULL, &remaining) < 0)
cmd->reply = "0,0,0";
else
cmd->reply = talloc_asprintf(cmd, "%u,%ld,%ld", fi->T, remaining.tv_sec, remaining.tv_usec);
return CTRL_CMD_REPLY;
}
CTRL_CMD_DEFINE_RO(fsm_inst_timer, "timer");
static int get_fsm_inst_dump(struct ctrl_cmd *cmd, void *data)
{
struct osmo_fsm_inst *fi = cmd->node;
struct osmo_fsm_inst *child;
if (!fi) {
cmd->reply = "No such FSM found";
return CTRL_CMD_ERROR;
}
/* Fixed Part: Name, ID, log_level, state, timer number */
cmd->reply = talloc_asprintf(cmd, "'%s','%s','%s','%s',%u", fi->name, fi->id,
log_level_str(fi->log_level),
osmo_fsm_state_name(fi->fsm, fi->state), fi->T);
/* Variable Parts below */
if (fi->T) {
struct timeval remaining;
int rc;
rc = osmo_timer_remaining(&fi->timer, NULL, &remaining);
if (rc == 0) {
cmd->reply = talloc_asprintf_append(cmd->reply, ",timeout_sec=%ld,timeout_usec=%ld",
remaining.tv_sec, remaining.tv_usec);
}
}
if (fi->proc.parent)
cmd->reply = talloc_asprintf_append(cmd->reply, ",parent='%s'", fi->proc.parent->name);
llist_for_each_entry(child, &fi->proc.children, proc.child) {
cmd->reply = talloc_asprintf_append(cmd->reply, ",child='%s'", child->name);
}
return CTRL_CMD_REPLY;
}
CTRL_CMD_DEFINE_RO(fsm_inst_dump, "dump");
int osmo_fsm_ctrl_cmds_install(void)
{
int rc = 0;
rc |= ctrl_cmd_install(CTRL_NODE_FSM_INST, &cmd_fsm_inst_dump);
rc |= ctrl_cmd_install(CTRL_NODE_FSM_INST, &cmd_fsm_inst_state);
rc |= ctrl_cmd_install(CTRL_NODE_FSM_INST, &cmd_fsm_inst_parent_name);
rc |= ctrl_cmd_install(CTRL_NODE_FSM_INST, &cmd_fsm_inst_timer);
rc |= ctrl_lookup_register(fsm_ctrl_node_lookup);
return rc;
}
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