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skyserver.c
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/*
* Copyright (C) 2021-2022 Skycharge GmbH
* Author: Roman Penyaev <[email protected]>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met: 1. Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
*
* 2. Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
*
* 3. Neither the name of the copyright holder nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <endian.h>
#include <limits.h>
#include <string.h>
#include <fcntl.h>
#include <unistd.h>
#include <signal.h>
#include <pthread.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <uuid/uuid.h>
#include <systemd/sd-id128.h>
#include <zmq.h>
#include <czmq.h>
#include "skyserver-cmd.h"
#include "libskycharge.h"
#include "libskypsu.h"
#include "daemon.h"
#include "avahi.h"
#include "crc8.h"
#include "skyproto.h"
#include "version.h"
#include "types.h"
struct zocket {
void *ctx;
void *pub;
void *router;
};
struct sky_server;
struct sky_server_dev {
struct sky_server *serv;
struct sky_dev_desc *devdesc;
struct sky_dev *dev;
struct {
struct sky_charging_state prev_state;
unsigned precharge_iter;
} hw1; /* PSU is controlled by the BB for HW1 only */
};
struct sky_server {
bool exit;
sd_id128_t id;
struct cli cli;
struct sky_conf conf; /* Local device config */
struct zocket zock;
struct sky_server_dev *devs;
struct sky_dev_desc *devhead;
struct sky_psu hw1_psu;
struct avahi *avahi;
};
static int sky_kill_pthread(pthread_t thread)
{
int rc;
do {
struct timespec ts;
/*
* Repeat killing to cover the race if first signal
* comes when we are not in kernel.
*/
clock_gettime(CLOCK_REALTIME, &ts);
ts.tv_sec += 1;
pthread_kill(thread, SIGTERM);
rc = pthread_timedjoin_np(thread, NULL, &ts);
} while (rc == ETIMEDOUT);
return rc;
}
static float get_precharge_current(struct sky_server_dev *servdev)
{
struct sky_server *serv = servdev->serv;
struct sky_conf *conf = &serv->conf;
float current_delta;
/*
* TODO Here we assume this function is called exactly with
* 1 second rate
*/
if (servdev->hw1.precharge_iter >= conf->psu.precharge_secs)
return conf->psu.current;
servdev->hw1.precharge_iter++;
current_delta = conf->psu.current - conf->psu.precharge_current;
current_delta /= conf->psu.precharge_secs;
return conf->psu.precharge_current +
current_delta * servdev->hw1.precharge_iter;
}
static void sky_on_charging_state(void *data, struct sky_charging_state *state)
{
struct sky_server_dev *servdev = data;
struct sky_server *serv = servdev->serv;
struct sky_conf *conf = &serv->conf;
struct sky_dev_desc *devdesc = servdev->devdesc;
struct sky_charging_state_rsp rsp;
zmsg_t *msg;
int rc;
if (serv->hw1_psu.type != SKY_PSU_UNKNOWN &&
sky_psu_is_precharge_set(&serv->hw1_psu)) {
bool was_charging, is_charging;
was_charging =
sky_hw_is_charging(devdesc->dev_type,
servdev->hw1.prev_state.dev_hw_state);
is_charging =
sky_hw_is_charging(devdesc->dev_type,
state->dev_hw_state);
if (was_charging && is_charging) {
/*
* Increment precharge current
*/
float current;
current = get_precharge_current(servdev);
sky_psu_set_current(&serv->hw1_psu, current);
} else if (was_charging ^ is_charging) {
/*
* Set to precharge current if charging has been
* started or has been stopped.
*/
sky_psu_set_current(&serv->hw1_psu,
conf->psu.precharge_current);
servdev->hw1.precharge_iter = 0;
}
servdev->hw1.prev_state = *state;
}
rsp.hdr.type = htole16(SKY_CHARGING_STATE_EV);
rsp.hdr.error = 0;
rsp.dev_hw_state = state->dev_hw_state;
rsp.dev_hw_reason = state->dev_hw_reason;
rsp.current_mA = htole16(state->current_mA);
rsp.voltage_mV = htole16(state->voltage_mV);
rsp.state_of_charge = htole16(state->state_of_charge);
rsp.until_full_secs = htole16(state->until_full_secs);
rsp.charging_secs = htole16(state->charging_secs);
rsp.mux_temperature_C = htole16(state->mux_temperature_C);
rsp.sink_temperature_C = htole16(state->sink_temperature_C);
rsp.energy_mWh = htole32(state->energy_mWh);
rsp.charge_mAh = htole32(state->charge_mAh);
rsp.mux_humidity_perc = state->mux_humidity_perc;
rsp.link_quality_factor = state->link_quality_factor;
rsp.tx.bytes = htole16(state->tx.bytes);
rsp.tx.packets = htole16(state->tx.packets);
rsp.tx.err_bytes = htole16(state->tx.err_bytes);
rsp.tx.err_packets = htole16(state->tx.err_packets);
rsp.rx.bytes = htole16(state->rx.bytes);
rsp.rx.packets = htole16(state->rx.packets);
rsp.rx.err_bytes = htole16(state->rx.err_bytes);
rsp.rx.err_packets = htole16(state->rx.err_packets);
rsp.charging_session_id = htole32(state->charging_session_id);
msg = zmsg_new();
if (!msg) {
sky_err("zmsg_new(): No memory\n");
return;
}
/* Publisher topic */
rc = zmsg_addmem(msg, &serv->id, sizeof(serv->id));
if (!rc)
rc = zmsg_addmem(msg, &rsp, sizeof(rsp));
if (!rc)
rc = zmsg_addmem(msg, conf->devuuid, sizeof(conf->devuuid));
if (rc) {
sky_err("zmsg_add(): No memory\n");
zmsg_destroy(&msg);
return;
}
rc = zmsg_send(&msg, serv->zock.pub);
if (rc) {
sky_err("zmsg_send(): %s\n", strerror(errno));
zmsg_destroy(&msg);
}
}
static struct sky_rsp_hdr emergency_rsp;
static inline void sky_free(void *rsp)
{
if (rsp != &emergency_rsp)
free(rsp);
}
static inline const void *zframe_data_const(const zframe_t *frame)
{
return zframe_data((zframe_t *)frame);
}
static inline size_t zframe_size_const(const zframe_t *frame)
{
return zframe_size((zframe_t *)frame);
}
static inline struct sky_dev *sky_find_dev(struct sky_server *serv,
const zframe_t *devport_frame)
{
struct sky_dev_desc *devdesc;
const char *portname;
size_t len, num;
if (devport_frame == NULL)
return NULL;
portname = zframe_data_const(devport_frame);
len = min(sizeof(devdesc->portname),
zframe_size((zframe_t *)devport_frame));
/*
* For now do linear search. Far from optimal, but simple.
*/
num = 0;
foreach_devdesc(devdesc, serv->devhead) {
struct sky_server_dev *servdev = &serv->devs[num++];
if (!memcmp(devdesc->portname, portname, len))
return servdev->dev;
}
return NULL;
}
static int sky_devs_list_rsp(struct sky_server *serv, const char *dev_name,
uint16_t proto_version, void **rsp_hdr, size_t *rsp_len)
{
struct sky_conf *conf = &serv->conf;
struct sky_dev_desc *dev, *head;
struct sky_devs_list_rsp *rsp;
void *rsp_void = NULL;
size_t len, info_len;
bool dyn_info;
int rc;
/* Compatibility with protocols below 0x0400 */
dyn_info = (proto_version >= 0x0400);
len = dyn_info ?
sizeof(*rsp) :
offsetof_end(typeof(*rsp), info_off);
rsp = rsp_void = calloc(1, len);
if (!rsp)
return -ENOMEM;
rc = sky_devslist(conf, &head);
rsp->hdr.type = htole16(SKY_DEVS_LIST_RSP);
rsp->hdr.error = htole16(-rc);
if (!rc) {
int num;
/* Compatibility with protocols below 0x0400 */
info_len = dyn_info ?
sizeof(rsp->info[0]) :
offsetof_end(typeof(rsp->info[0]), portname);
foreach_devdesc(dev, head)
len += info_len;
rsp = realloc(rsp, len);
if (!rsp) {
free(rsp_void);
sky_devsfree(head);
return -ENOMEM;
}
rsp_void = rsp;
num = 0;
foreach_devdesc(dev, head) {
struct sky_dev_info *info =
(void *)&rsp->info[0] + info_len * num;
memset(info, 0, info_len);
info->dev_type = htole16(dev->dev_type);
info->fw_version = htole32(dev->hw_info.fw_version);
memcpy(info->portname, dev->portname,
sizeof(dev->portname));
memcpy(info->dev_uuid, conf->devuuid,
sizeof(conf->devuuid));
strncpy(info->dev_name, dev_name, sizeof(info->dev_name));
if (dyn_info) {
/* Protocol version >= 0x0400 */
info->info_len = htole16(sizeof(*info));
info->proto_version =
htole16(SKY_PROTO_VERSION);
info->hw_version =
htole32(dev->hw_info.hw_version);
info->plc_proto_version =
htole32(dev->hw_info.plc_proto_version);
info->hw_uid.part1 =
htole32(dev->hw_info.uid.part1);
info->hw_uid.part2 =
htole32(dev->hw_info.uid.part2);
info->hw_uid.part3 =
htole32(dev->hw_info.uid.part3);
}
num += 1;
}
sky_devsfree(head);
rsp->num_devs = htole16(num);
if (dyn_info) {
/* Protocol version >= 0x0400 */
rsp->info_off = htole16(offsetof_end(typeof(*rsp), info_off));
}
}
*rsp_hdr = rsp_void;
*rsp_len = len;
return rc;
}
static void sky_execute_cmd(struct sky_server *serv,
const zframe_t *devport_frame,
const zframe_t *data_frame,
struct sky_rsp_hdr **rsp_hdr, size_t *rsp_len)
{
const struct sky_req_hdr *req_hdr = zframe_data_const(data_frame);
enum sky_proto_type req_type = SKY_UNKNOWN_REQRSP;
struct sky_dev *dev;
void *rsp_void = NULL;
uint16_t proto_version;
size_t len;
int rc, i;
len = zframe_size_const(data_frame);
if (len < offsetof_end(typeof(*req_hdr), type)) {
sky_err("malformed request header\n");
rc = -EINVAL;
goto emergency;
} else if (len == offsetof_end(typeof(*req_hdr), type)) {
/* Protocols below 0x0400 version */
proto_version = 0;
} else {
/* Protocols below 0x0400 version has 0 in the field */
proto_version = le16toh(req_hdr->proto_version);
}
req_type = le16toh(req_hdr->type);
switch (req_type) {
case SKY_SINK_GET_DEV_PARAMS_REQ:
case SKY_GET_DEV_PARAMS_REQ: {
struct sky_get_dev_params_req *req = (void *)req_hdr;
struct sky_get_dev_params_rsp *rsp;
struct sky_dev_params params;
int num, ind;
dev = sky_find_dev(serv, devport_frame);
if (dev == NULL) {
rc = -ENODEV;
goto emergency;
}
if (zframe_size_const(data_frame) < sizeof(*req)) {
sky_err("malformed request\n");
rc = -EINVAL;
goto emergency;
}
params.dev_params_bits = le32toh(req->dev_params_bits);
if (params.dev_params_bits == 0) {
sky_err("malformed request: dev_params_bits == 0\n");
rc = -EINVAL;
goto emergency;
}
for (i = 0, num = 0; i < ARRAY_SIZE(params.dev_params); i++) {
if (params.dev_params_bits & (1<<i))
num++;
}
len = num * sizeof(rsp->dev_params[0]) + sizeof(*rsp);
rsp = rsp_void = calloc(1, len);
if (!rsp) {
rc = -ENOMEM;
goto emergency;
}
if (req_type == SKY_GET_DEV_PARAMS_REQ)
rc = sky_paramsget(dev, ¶ms);
else
rc = sky_sink_paramsget(dev, ¶ms);
rsp->hdr.type = htole16(req_type + 1);
rsp->hdr.error = htole16(-rc);
if (!rc) {
for (i = 0, ind = 0; ind < num; i++) {
if (!(params.dev_params_bits & (1<<i)))
continue;
rsp->dev_params[ind++] =
htole32(params.dev_params[i]);
}
}
break;
}
case SKY_SINK_SET_DEV_PARAMS_REQ:
case SKY_SET_DEV_PARAMS_REQ: {
struct sky_set_dev_params_req *req = (void *)req_hdr;
struct sky_rsp_hdr *rsp;
struct sky_dev_params params = {
.dev_params_bits = 0
};
int ind;
dev = sky_find_dev(serv, devport_frame);
if (dev == NULL) {
rc = -ENODEV;
goto emergency;
}
if (zframe_size_const(data_frame) < sizeof(*req)) {
sky_err("malformed request\n");
rc = -EINVAL;
goto emergency;
}
len = sizeof(*rsp);
rsp = rsp_void = calloc(1, len);
if (!rsp) {
rc = -ENOMEM;
goto emergency;
}
params.dev_params_bits = le32toh(req->dev_params_bits);
if (params.dev_params_bits == 0) {
sky_err("malformed request: dev_params_bits == 0\n");
rc = -EINVAL;
goto emergency;
}
for (i = 0, ind = 0; i < ARRAY_SIZE(params.dev_params); i++) {
if (!(params.dev_params_bits & (1<<i)))
continue;
if (zframe_size_const(data_frame) <
(sizeof(*req) +
sizeof(req->dev_params[0]) * (ind + 1))) {
sky_err("malformed request\n");
free(rsp);
rc = -EINVAL;
goto emergency;
}
params.dev_params[i] = le32toh(req->dev_params[ind++]);
}
if (req_type == SKY_SET_DEV_PARAMS_REQ)
rc = sky_paramsset(dev, ¶ms);
else
rc = sky_sink_paramsset(dev, ¶ms);
rsp->type = htole16(req_type + 1);
rsp->error = htole16(-rc);
break;
}
case SKY_RESUME_SCAN_REQ: {
struct sky_rsp_hdr *rsp;
dev = sky_find_dev(serv, devport_frame);
if (dev == NULL) {
rc = -ENODEV;
goto emergency;
}
len = sizeof(*rsp);
rsp = rsp_void = calloc(1, len);
if (!rsp) {
rc = -ENOMEM;
goto emergency;
}
rc = sky_scanresume(dev);
rsp->type = htole16(SKY_RESUME_SCAN_RSP);
rsp->error = htole16(-rc);
break;
}
case SKY_STOP_SCAN_REQ: {
struct sky_rsp_hdr *rsp;
dev = sky_find_dev(serv, devport_frame);
if (dev == NULL) {
rc = -ENODEV;
goto emergency;
}
len = sizeof(*rsp);
rsp = rsp_void = calloc(1, len);
if (!rsp) {
rc = -ENOMEM;
goto emergency;
}
rc = sky_scanstop(dev);
rsp->type = htole16(SKY_STOP_SCAN_RSP);
rsp->error = htole16(-rc);
break;
}
case SKY_OPEN_DRONEPORT_REQ: {
struct sky_rsp_hdr *rsp;
dev = sky_find_dev(serv, devport_frame);
if (dev == NULL) {
rc = -ENODEV;
goto emergency;
}
len = sizeof(*rsp);
rsp = rsp_void = calloc(1, len);
if (!rsp) {
rc = -ENOMEM;
goto emergency;
}
rc = sky_droneport_open(dev);
rsp->type = htole16(SKY_OPEN_DRONEPORT_RSP);
rsp->error = htole16(-rc);
break;
}
case SKY_CLOSE_DRONEPORT_REQ: {
struct sky_rsp_hdr *rsp;
dev = sky_find_dev(serv, devport_frame);
if (dev == NULL) {
rc = -ENODEV;
goto emergency;
}
len = sizeof(*rsp);
rsp = rsp_void = calloc(1, len);
if (!rsp) {
rc = -ENOMEM;
goto emergency;
}
rc = sky_droneport_close(dev);
rsp->type = htole16(SKY_CLOSE_DRONEPORT_RSP);
rsp->error = htole16(-rc);
break;
}
case SKY_DRONEPORT_STATE_REQ: {
struct sky_droneport_state_rsp *rsp;
struct sky_droneport_state state;
dev = sky_find_dev(serv, devport_frame);
if (dev == NULL) {
rc = -ENODEV;
goto emergency;
}
len = sizeof(*rsp);
rsp = rsp_void = calloc(1, len);
if (!rsp) {
rc = -ENOMEM;
goto emergency;
}
rc = sky_droneport_state(dev, &state);
rsp->hdr.type = htole16(SKY_DRONEPORT_STATE_RSP);
rsp->hdr.error = htole16(-rc);
if (!rc) {
rsp->status = htole32(state.status);
}
break;
}
case SKY_CHARGING_STATE_REQ: {
struct sky_charging_state_rsp *rsp;
struct sky_charging_state state;
dev = sky_find_dev(serv, devport_frame);
if (dev == NULL) {
rc = -ENODEV;
goto emergency;
}
len = sizeof(*rsp);
rsp = rsp_void = calloc(1, len);
if (!rsp) {
rc = -ENOMEM;
goto emergency;
}
rc = sky_chargingstate(dev, &state);
rsp->hdr.type = htole16(SKY_CHARGING_STATE_RSP);
rsp->hdr.error = htole16(-rc);
if (!rc) {
rsp->dev_hw_state = state.dev_hw_state;
rsp->dev_hw_reason = state.dev_hw_reason;
rsp->current_mA = htole16(state.current_mA);
rsp->voltage_mV = htole16(state.voltage_mV);
rsp->state_of_charge =
htole16(state.state_of_charge);
rsp->until_full_secs =
htole16(state.until_full_secs);
rsp->charging_secs = htole16(state.charging_secs);
rsp->mux_temperature_C
= htole16(state.mux_temperature_C);
rsp->sink_temperature_C
= htole16(state.sink_temperature_C);
rsp->energy_mWh = htole32(state.energy_mWh);
rsp->charge_mAh = htole32(state.charge_mAh);
rsp->mux_humidity_perc = state.mux_humidity_perc;
rsp->link_quality_factor = state.link_quality_factor;
rsp->tx.bytes = htole16(state.tx.bytes);
rsp->tx.packets = htole16(state.tx.packets);
rsp->tx.err_bytes = htole16(state.tx.err_bytes);
rsp->tx.err_packets = htole16(state.tx.err_packets);
rsp->rx.bytes = htole16(state.rx.bytes);
rsp->rx.packets = htole16(state.rx.packets);
rsp->rx.err_bytes = htole16(state.rx.err_bytes);
rsp->rx.err_packets = htole16(state.rx.err_packets);
rsp->charging_session_id =
htole32(state.charging_session_id);
}
break;
}
case SKY_RESET_DEV_REQ: {
struct sky_rsp_hdr *rsp;
dev = sky_find_dev(serv, devport_frame);
if (dev == NULL) {
rc = -ENODEV;
goto emergency;
}
len = sizeof(*rsp);
rsp = rsp_void = calloc(1, len);
if (!rsp) {
rc = -ENOMEM;
goto emergency;
}
rc = sky_reset(dev);
rsp->type = htole16(SKY_RESET_DEV_RSP);
rsp->error = htole16(-rc);
break;
}
case SKY_DEVS_LIST_REQ: {
rc = sky_devs_list_rsp(serv, serv->conf.devname, proto_version,
&rsp_void, &len);
if (rc)
goto emergency;
break;
}
case SKY_PEERINFO_REQ: {
struct sky_peerinfo_rsp *rsp;
len = sizeof(*rsp);
rsp = rsp_void = calloc(1, len);
if (!rsp) {
rc = -ENOMEM;
goto emergency;
}
rsp->hdr.type = htole16(SKY_PEERINFO_RSP);
rsp->hdr.error = htole16(0);
rsp->proto_version = htole16(SKY_PROTO_VERSION);
rsp->server_version = htole32(SKY_VERSION);
break;
}
case SKY_GPSDATA_REQ: {
struct sky_gpsdata_rsp *rsp;
struct sky_gpsdata gpsdata;
dev = sky_find_dev(serv, devport_frame);
if (dev == NULL) {
rc = -ENODEV;
goto emergency;
}
len = sizeof(*rsp);
rsp = rsp_void = calloc(1, len);
if (!rsp) {
rc = -ENOMEM;
goto emergency;
}
rc = sky_gpsdata(dev, &gpsdata);
rsp->hdr.type = htole16(SKY_GPSDATA_RSP);
rsp->hdr.error = htole16(-rc);
if (!rc) {
rsp->status = htole32(gpsdata.status);
rsp->satellites_used = htole32(gpsdata.satellites_used);
#define D2LLU(dp) ({ uint64_t *llu = (uint64_t *)(dp); *llu; })
rsp->dop.xdop = htole64(D2LLU(&gpsdata.dop.xdop));
rsp->dop.ydop = htole64(D2LLU(&gpsdata.dop.ydop));
rsp->dop.pdop = htole64(D2LLU(&gpsdata.dop.pdop));
rsp->dop.hdop = htole64(D2LLU(&gpsdata.dop.hdop));
rsp->dop.vdop = htole64(D2LLU(&gpsdata.dop.vdop));
rsp->dop.tdop = htole64(D2LLU(&gpsdata.dop.tdop));
rsp->dop.gdop = htole64(D2LLU(&gpsdata.dop.gdop));
rsp->fix.mode = htole32(gpsdata.fix.mode);
rsp->fix.time = htole64(D2LLU(&gpsdata.fix.time));
rsp->fix.latitude =
htole64(D2LLU(&gpsdata.fix.latitude));
rsp->fix.longitude =
htole64(D2LLU(&gpsdata.fix.longitude));
rsp->fix.altitude =
htole64(D2LLU(&gpsdata.fix.altitude));
}
break;
}
case SKY_DRONEDETECT_REQ: {
struct sky_dronedetect_rsp *rsp;
enum sky_drone_status status;
dev = sky_find_dev(serv, devport_frame);
if (dev == NULL) {
rc = -ENODEV;
goto emergency;
}
len = sizeof(*rsp);
rsp = rsp_void = calloc(1, len);
if (!rsp) {
rc = -ENOMEM;
goto emergency;
}
rc = sky_dronedetect(dev, &status);
rsp->hdr.type = htole16(SKY_DRONEDETECT_RSP);
rsp->hdr.error = htole16(-rc);
if (!rc)
rsp->status = htole16(status);
break;
}
case SKY_SINK_GET_INFO_REQ: {
struct sky_sink_get_info_rsp *rsp;
struct sky_sink_info info;
dev = sky_find_dev(serv, devport_frame);
if (dev == NULL) {
rc = -ENODEV;
goto emergency;
}
len = sizeof(*rsp);
rsp = rsp_void = calloc(1, len);
if (!rsp) {
rc = -ENOMEM;
goto emergency;
}
rc = sky_sink_infoget(dev, &info);
rsp->hdr.type = htole16(SKY_SINK_GET_INFO_RSP);
rsp->hdr.error = htole16(-rc);
if (!rc) {
rsp->fw_version =
htole32(info.hw_info.fw_version);
rsp->hw_version =
htole32(info.hw_info.hw_version);
rsp->plc_proto_version =
htole32(info.hw_info.plc_proto_version);
rsp->hw_uid.part1 =
htole32(info.hw_info.uid.part1);
rsp->hw_uid.part2 =
htole32(info.hw_info.uid.part2);
rsp->hw_uid.part3 =
htole32(info.hw_info.uid.part3);
}
break;
}
case SKY_SINK_START_CHARGE_REQ:
case SKY_SINK_STOP_CHARGE_REQ: {
struct sky_rsp_hdr *rsp;
dev = sky_find_dev(serv, devport_frame);
if (dev == NULL) {
rc = -ENODEV;
goto emergency;
}
len = sizeof(*rsp);
rsp = rsp_void = calloc(1, len);
if (!rsp) {
rc = -ENOMEM;
goto emergency;
}
if (req_type == SKY_SINK_START_CHARGE_REQ)
rc = sky_sink_chargestart(dev);
else
rc = sky_sink_chargestop(dev);
rsp->type = htole16(req_type + 1);
rsp->error = htole16(-rc);
break;
}
case SKY_GET_SUBSCRIPTION_TOKEN_REQ: {
struct sky_subscription_token_rsp *rsp;
len = sizeof(*rsp) + sizeof(serv->id);
rsp = rsp_void = calloc(1, len);
if (!rsp) {
rc = -ENOMEM;
goto emergency;
}
rsp->hdr.type = htole16(req_type + 1);
rsp->hdr.error = htole16(0);
rsp->len = htole16(sizeof(serv->id.bytes));
memcpy(rsp->buf, serv->id.bytes, sizeof(serv->id.bytes));
break;
}
case SKY_SINK_PASSTHRU_MSG_SEND_REQ: {
struct sky_sink_passthru_msg_send_req *req = (void *)req_hdr;
struct sky_passthru_msg msg;
struct sky_rsp_hdr *rsp;
dev = sky_find_dev(serv, devport_frame);
if (dev == NULL) {
rc = -ENODEV;
goto emergency;
}
if (zframe_size_const(data_frame) < sizeof(*req)) {
sky_err("malformed request\n");
rc = -EINVAL;
goto emergency;
}
if (zframe_size_const(data_frame) < sizeof(*req) + req->len) {
sky_err("malformed request\n");
rc = -EINVAL;
goto emergency;
}
if (req->len > sizeof(msg.buf)) {
rc = -EOVERFLOW;
goto emergency;
}
len = sizeof(*rsp);
rsp = rsp_void = calloc(1, len);
if (!rsp) {
rc = -ENOMEM;
goto emergency;
}
msg.len = req->len;
memcpy(msg.buf, req->buf, req->len);
rc = sky_sink_passthru_msgsend(dev, &msg);
rsp->type = htole16(req_type + 1);
rsp->error = htole16(-rc);
break;
}
case SKY_SINK_PASSTHRU_MSG_RECV_REQ: {
struct sky_sink_passthru_msg_recv_rsp *rsp;
struct sky_passthru_msg msg;
dev = sky_find_dev(serv, devport_frame);
if (dev == NULL) {
rc = -ENODEV;
goto emergency;
}
rc = sky_sink_passthru_msgrecv(dev, &msg);
len = sizeof(*rsp) + (rc ? 0 : msg.len);
rsp = rsp_void = calloc(1, len);
if (!rsp) {
rc = -ENOMEM;
goto emergency;
}
if (!rc) {
rsp->len = msg.len;
memcpy(rsp->buf, msg.buf, msg.len);
}
rsp->hdr.type = htole16(req_type + 1);
rsp->hdr.error = htole16(-rc);
break;
}
default:
sky_err("unknown request: %d\n", req_type);
rc = -EINVAL;
goto emergency;
}
*rsp_hdr = rsp_void;
*rsp_len = len;
return;
emergency:
emergency_rsp.error = htole16(-rc);
if (req_type == SKY_UNKNOWN_REQRSP || req_type >= SKY_LAST_REQRSP)
emergency_rsp.type = SKY_UNKNOWN_REQRSP;
else
emergency_rsp.type = htole16(req_type + 1);
*rsp_hdr = &emergency_rsp;
*rsp_len = sizeof(emergency_rsp);
return;
}
static void sky_zocket_destroy(struct sky_server *serv)
{
struct zocket *z = &serv->zock;
if (z->router) {
(void)zmq_close(z->router);
z->router = NULL;
}
if (z->pub) {
(void)zmq_close(z->pub);
z->pub = NULL;
}
if (z->ctx) {
/*
* If one of the zmq sockets has not been successfully
* connected we hang on ctx_term forever. So fuck it!
* I mean that! I tired struggling with zmq.
*
* (void)zmq_ctx_term(z->ctx);
*/
z->ctx = NULL;
}
}
static int sky_zocket_create(struct sky_server *serv, const char *addr, int port)
{
struct zocket *z = &serv->zock;
char zaddr1[128], zaddr2[128];
uint32_t opt;
int rc;
rc = snprintf(zaddr1, sizeof(zaddr1), "tcp://%s:%d", addr, port);
if (rc < 0 || rc >= sizeof(zaddr1))
return -EINVAL;
rc = snprintf(zaddr2, sizeof(zaddr2), "tcp://%s:%d", addr, port+1);
if (rc < 0 || rc >= sizeof(zaddr2))
return -EINVAL;