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skyhttpd.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 <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <fcntl.h>
#include <signal.h>
#include <unistd.h>
#include <sys/socket.h>
#include <netdb.h>
#include <limits.h>
#include <assert.h>
#include <uuid/uuid.h>
#include <microhttpd.h>
#include "skyhttpd-cmd.h"
#include "libskycharge.h"
#include "libskycharge-pri.h"
#include "types.h"
#include "rbtree.h"
#include "hash.h"
#include "version.h"
#include "daemon.h"
#include "skyproto.h"
#include "errnoname.h"
/*
* JSON API:
*
* GET
* ---
* "user-uuid" is mandatory for the broker:
* /devs-list - sky_devslist()
*
* "user-uuid" is mandatory for the broker
* "device-uuid" is mandatory
* /charging-params - sky_paramsget()
* /charging-state - sky_chargingstate()
* /gps-data - sky_gpsdata()
* /scan-resume - sky_scanresume()
* /scan-stop - sky_scanstop()
* /sink-charging-params - sky_sink_paramsget()
* /droneport-open - sky_droneport_open()
* /droneport-close - sky_droneport_close()
* /droneport-state - sky_droneport_state()
*
* POST
* ----
* "user-uuid" is mandatory for the broker
* "device-uuid" is mandatory
* /charging-params - sky_paramsset()
* /sink-charging-params - sky_sink_paramsset()
*/
#define HELP \
"<html><head><title>Skycharge API</title></head>\n" \
"<body>Please contact <a href=\"mailto:[email protected]\">[email protected]</a> " \
"for detailed API description.</body>\n</html>\n"
enum {
HTTP_TOO_MANY_REQUESTS_STATUS = 429,
MAX_CONNECTIONS = 512,
MAX_BAD_AUTH_ATTEMPTS = 3,
CHILL_OUT_BAD_AUTH_MS = 10000, /* 10 secs should be enough */
MAX_REQUESTS_RATE = 3, /* per 1000 ms */
REQUEST_TIMEOUT_MS = 10000,
_1_SEC_IN_MS = 1000,
};
#define SKY_FD_SET_T(name) \
unsigned long name[MAX_CONNECTIONS / (8 * sizeof(long))]
#define SKY_FD_SET(fd, set) \
set[(fd) / (8 * sizeof(long))] |= 1<<((fd) % (8 * sizeof(long)))
#define SKY_FD_ISSET(fd, set) \
set[(fd) / (8 * sizeof(long))] & (1<<((fd) % (8 * sizeof(long))))
#define SKY_FD_ZERO(set) \
memset(set, 0, sizeof(*set))
struct httpd_con_addr {
struct hash_entry hentry; /* httpd->addrs_hash */
struct rb_node tentry; /* httpd->addrs_tree */
unsigned bad_auth_attempts;
struct in_addr sin_addr;
unsigned long long expire_ms;
unsigned long long last_access_ms;
int refs;
};
struct httpd {
struct cli cli;
struct sky_conf conf;
struct MHD_Daemon *mhd;
struct sky_async *async;
struct hash_table addrs_hash; /* addrs hashed by sin_addr */
struct rb_root addrs_root; /* addrs to expire */
struct rb_root reqs_root; /* requests to expire */
struct MHD_Response *emergency_resp;
bool need_processing;
unsigned max_requests_rate;
};
struct httpd_request;
typedef int (create_dev_request_t)(struct httpd_request *devslist_req);
struct httpd_request {
struct httpd *httpd;
struct MHD_Connection *httpcon;
struct sky_async_req skyreq;
union sky_async_storage skystruct;
uuid_t user_uuid;
uuid_t device_uuid;
create_dev_request_t *create_dev_req;
struct rb_node tentry; /* httpd->reqs_root */
unsigned long long expire_ms; /* when this request times out */
};
typedef int (httpd_handler_t)(struct httpd *,
struct MHD_Connection *con,
const uuid_t user_uuid,
const uuid_t device_uuid);
static bool http_is_get(const char *method)
{
return !strcmp(method, MHD_HTTP_METHOD_GET);
}
static bool http_is_put(const char *method)
{
return !strcmp(method, MHD_HTTP_METHOD_PUT);
}
static int sky_find_and_open_dev(const struct sky_dev_desc *devdescs,
const uuid_t device_uuid,
struct sky_dev **pdev)
{
const struct sky_dev_desc *devdesc;
if (!device_uuid)
return -ENODEV;
foreach_devdesc(devdesc, devdescs) {
if (memcmp(devdesc->dev_uuid, device_uuid, sizeof(uuid_t)))
continue;
return sky_devopen(devdesc, pdev);
}
return -ENODEV;
}
__attribute__((format(printf, 4, 5)))
static int snprintf_buffer(char **pbuffer, int *poff, int *psize,
const char *fmt, ...)
{
int size = *psize, off = *poff;
char *buffer = *pbuffer;
va_list ap;
int len;
/* Determine required size */
va_start(ap, fmt);
len = vsnprintf(NULL, 0, fmt, ap);
va_end(ap);
if (len < 0)
return -EINVAL;
if (!buffer || (len + 1) > size - off) {
size = round_up(off + len + 1, 128);
buffer = realloc(buffer, size);
if (!buffer)
return -ENOMEM;
}
va_start(ap, fmt);
vsnprintf(buffer + off, size - off, fmt, ap);
va_end(ap);
*pbuffer = buffer;
*poff += len;
*psize = size;
return 0;
}
#define rbnode_compare(type, member, cmpmember, a_, b_) ({ \
type *a; \
type *b; \
\
a = container_of(a_, typeof(*a), tentry); \
b = container_of(b_, typeof(*b), tentry); \
\
(a->cmpmember < b->cmpmember ? -1 : \
a->cmpmember > b->cmpmember ? 1 : 0); \
})
static void httpd_request_insert(struct httpd *httpd,
struct httpd_request *req)
{
struct rb_node **this = &httpd->reqs_root.rb_node;
struct rb_node *parent = NULL;
struct rb_node *new;
int cmp;
req->expire_ms = msecs_epoch() + REQUEST_TIMEOUT_MS;
new = &req->tentry;
while (*this) {
parent = *this;
cmp = rbnode_compare(typeof(*req), tentry,
expire_ms, new, *this);
/*
* Equal elements go to the right, i.e. FIFO order, thus '<',
* if LIFO is needed then use '<='
*/
if (cmp < 0)
this = &(*this)->rb_left;
else
this = &(*this)->rb_right;
}
/* Add new node to the tree and rebalance it */
rb_link_node(new, parent, this);
rb_insert_color(new, &httpd->reqs_root);
}
static int
httpd_create_emergency_response(struct httpd *httpd)
{
httpd->emergency_resp = MHD_create_response_from_buffer(0, NULL,
MHD_RESPMEM_PERSISTENT);
if (!httpd->emergency_resp)
return -ENOMEM;
return 0;
}
static void
httpd_destroy_emergency_response(struct httpd *httpd)
{
MHD_destroy_response(httpd->emergency_resp);
}
static bool httpd_get_and_clear_need_processing(struct httpd *httpd)
{
bool need_processing;
need_processing = httpd->need_processing;
httpd->need_processing = false;
return need_processing;
}
static void httpd_set_need_processing(struct httpd *httpd)
{
httpd->need_processing = true;
}
static int
httpd_queue_response(struct httpd *httpd, struct MHD_Connection *con,
int http_status, struct MHD_Response *resp)
{
httpd_set_need_processing(httpd);
return MHD_queue_response(con, http_status, resp);
}
static void
httpd_queue_emergency_response(struct httpd *httpd,
struct MHD_Connection *con)
{
(void)httpd_queue_response(httpd, con, MHD_HTTP_SERVICE_UNAVAILABLE,
httpd->emergency_resp);
}
static void
httpd_queue_response_and_free_buffer(struct httpd *httpd,
struct MHD_Connection *con,
char *buffer, size_t len)
{
struct MHD_Response *resp;
resp = MHD_create_response_from_buffer(len, buffer, MHD_RESPMEM_MUST_FREE);
if (!resp) {
free(buffer);
httpd_queue_emergency_response(httpd, con);
return;
}
(void)httpd_queue_response(httpd, con, MHD_HTTP_OK, resp);
MHD_destroy_response(resp);
}
static void
httpd_queue_json_response(struct httpd *httpd,
struct MHD_Connection *con,
int rc)
{
char *buffer = NULL;
int off = 0, size = 0;
int ret;
ret = snprintf_buffer(&buffer, &off, &size, "{\n\t\"errno\": \"%s\"\n}\n",
errnoname_unsafe(-rc));
if (ret) {
httpd_queue_emergency_response(httpd, con);
return;
}
httpd_queue_response_and_free_buffer(httpd, con, buffer, off);
}
static int
devs_list_create_composite_request(struct httpd *httpd,
struct MHD_Connection *con,
const uuid_t user_uuid,
const uuid_t device_uuid,
create_dev_request_t *create_dev_req,
sky_async_completion_t *skycompletion)
{
struct httpd_request *req;
int rc;
req = calloc(1, sizeof(*req));
if (!req)
return -ENOMEM;
req->httpd = httpd;
req->httpcon = con;
req->create_dev_req = create_dev_req;
memcpy(req->user_uuid, user_uuid, sizeof(uuid_t));
memcpy(req->device_uuid, device_uuid, sizeof(uuid_t));
rc = sky_asyncreq_devslist(httpd->async, &req->skystruct.devdescs,
&req->skyreq);
if (rc) {
free(req);
return rc;
}
sky_asyncreq_useruuidset(&req->skyreq, req->user_uuid);
sky_asyncreq_completionset(&req->skyreq, skycompletion);
httpd_request_insert(httpd, req);
httpd_set_need_processing(httpd);
return 0;
}
static void
devs_list_composite_skycompletion(struct sky_async_req *skyreq)
{
struct httpd_request *req;
int rc;
req = container_of(skyreq, typeof(*req), skyreq);
rc = skyreq->out.rc;
if (!rc && req->create_dev_req) {
rc = req->create_dev_req(req);
}
if (rc) {
httpd_queue_json_response(req->httpd, req->httpcon, rc);
MHD_resume_connection(req->httpcon);
}
sky_devsfree(req->skystruct.devdescs);
rb_erase(&req->tentry, &req->httpd->reqs_root);
free(req);
}
static void
dev_cmd_skycompletion(struct sky_async_req *skyreq)
{
struct httpd_request *req;
int rc;
req = container_of(skyreq, typeof(*req), skyreq);
rc = skyreq->out.rc;
sky_devclose(skyreq->dev);
/*
* Prior 1.3.0 version BMS, GPS or DP code returns -ENODEV
* if operation is not supported. This is a bad practice,
* because client can't destinguish real -ENODEV error
* "device was not found" from "device was found, but op
* is not supported". Change the return code here, which
* is safe.
*/
if (rc == -ENODEV)
rc = -EOPNOTSUPP;
httpd_queue_json_response(req->httpd, req->httpcon, rc);
MHD_resume_connection(req->httpcon);
rb_erase(&req->tentry, &req->httpd->reqs_root);
free(req);
}
static int
dev_cmd_create_request(int (*devcmd)(struct sky_async *async,
struct sky_dev *dev,
struct sky_async_req *req),
struct httpd *httpd,
struct MHD_Connection *con,
const uuid_t user_uuid,
const uuid_t device_uuid,
struct sky_dev_desc *devdescs)
{
struct httpd_request *req;
struct sky_dev *dev;
int rc;
rc = sky_find_and_open_dev(devdescs, device_uuid, &dev);
if (rc)
return rc;
req = calloc(1, sizeof(*req));
if (!req) {
sky_devclose(dev);
return -ENOMEM;
}
req->httpd = httpd;
req->httpcon = con;
memcpy(req->user_uuid, user_uuid, sizeof(uuid_t));
memcpy(req->device_uuid, device_uuid, sizeof(uuid_t));
rc = devcmd(httpd->async, dev, &req->skyreq);
if (rc) {
free(req);
sky_devclose(dev);
return rc;
}
sky_asyncreq_useruuidset(&req->skyreq, req->user_uuid);
sky_asyncreq_completionset(&req->skyreq, dev_cmd_skycompletion);
httpd_request_insert(httpd, req);
httpd_set_need_processing(httpd);
return 0;
}
static int
scan_resume_create_request(struct httpd_request *req)
{
return dev_cmd_create_request(sky_asyncreq_scanresume,
req->httpd, req->httpcon,
req->user_uuid, req->device_uuid,
req->skystruct.devdescs);
}
static int
scan_stop_create_request(struct httpd_request *req)
{
return dev_cmd_create_request(sky_asyncreq_scanstop,
req->httpd, req->httpcon,
req->user_uuid, req->device_uuid,
req->skystruct.devdescs);
}
static int
droneport_open_create_request(struct httpd_request *req)
{
return dev_cmd_create_request(sky_asyncreq_droneport_open,
req->httpd, req->httpcon,
req->user_uuid, req->device_uuid,
req->skystruct.devdescs);
}
static int
cover_close_create_request(struct httpd_request *req)
{
return dev_cmd_create_request(sky_asyncreq_droneport_close,
req->httpd, req->httpcon,
req->user_uuid, req->device_uuid,
req->skystruct.devdescs);
}
static void devs_list_skycompletion(struct sky_async_req *skyreq)
{
struct httpd_request *req;
char *buffer = NULL;
int off = 0, size = 0;
int ret;
req = container_of(skyreq, typeof(*req), skyreq);
ret = snprintf_buffer(&buffer, &off, &size,
"{\n\t\"errno\": \"%s\",\n\t\"devices\": [\n",
errnoname_unsafe(-skyreq->out.rc));
if (ret)
goto err;
if (!skyreq->out.rc) {
struct sky_dev_desc *devdesc;
foreach_devdesc(devdesc, req->skystruct.devdescs) {
char dev_uuid[37];
uuid_unparse(devdesc->dev_uuid, dev_uuid);
ret = snprintf_buffer(&buffer, &off, &size,
"\t\t{\n"
"\t\t\t\"device-uuid\": \"%s\",\n"
"\t\t\t\"device-name\": \"%s\"\n"
"\t\t}%s\n",
dev_uuid, devdesc->dev_name,
devdesc->next ? "," : "");
if (ret)
goto err;
}
}
ret = snprintf_buffer(&buffer, &off, &size, "\t]\n}\n");
if (ret)
goto err;
(void)httpd_queue_response_and_free_buffer(req->httpd, req->httpcon,
buffer, off);
out:
sky_devsfree(req->skystruct.devdescs);
MHD_resume_connection(req->httpcon);
rb_erase(&req->tentry, &req->httpd->reqs_root);
free(req);
return;
err:
free(buffer);
goto out;
}
static int
devs_list_http_handler(struct httpd *httpd,
struct MHD_Connection *con,
const uuid_t user_uuid,
const uuid_t device_uuid)
{
return devs_list_create_composite_request(httpd, con, user_uuid, device_uuid,
NULL, devs_list_skycompletion);
}
static void charging_params_skycompletion(struct sky_async_req *skyreq)
{
struct sky_dev_params *params;
struct sky_dev_desc devdesc;
struct httpd_request *req;
char *buffer = NULL;
int off = 0, size = 0;
int i, ret, rc;
req = container_of(skyreq, typeof(*req), skyreq);
rc = skyreq->out.rc;
if (!rc)
(void)sky_devinfo(skyreq->dev, &devdesc);
sky_devclose(skyreq->dev);
params = &req->skystruct.params;
ret = snprintf_buffer(&buffer, &off, &size,
"{\n\t\"errno\": \"%s\",\n\t\"params\": {\n",
errnoname_unsafe(-rc));
if (ret)
goto err;
if (!rc) {
unsigned int nr_params;
const char *str;
char val[128];
if (devdesc.dev_type == SKY_MUX_HW1)
nr_params = SKY_HW1_NUM_DEVPARAM;
else
nr_params = SKY_HW2_NUM_DEVPARAM;
for (i = 0; i < nr_params; i++) {
str = sky_devparam_to_str(devdesc.dev_type, i);
sky_devparam_value_to_str(devdesc.dev_type, i, params,
SKY_PARAM_VALUE_TEXT,
val, sizeof(val));
ret = snprintf_buffer(&buffer, &off, &size,
"\t\t\t\"%s\": \"%s\"%s\n",
str, val,
i + 1 < nr_params ? "," : "");
if (ret)
goto err;
}
}
ret = snprintf_buffer(&buffer, &off, &size, "\t}\n}\n");
if (ret)
goto err;
(void)httpd_queue_response_and_free_buffer(req->httpd, req->httpcon,
buffer, off);
out:
MHD_resume_connection(req->httpcon);
rb_erase(&req->tentry, &req->httpd->reqs_root);
free(req);
return;
err:
free(buffer);
goto out;
}
static void generic_skycompletion(struct sky_async_req *skyreq)
{
struct sky_dev_desc devdesc;
struct httpd_request *req;
char *buffer = NULL;
int off = 0, size = 0;
int ret, rc;
req = container_of(skyreq, typeof(*req), skyreq);
rc = skyreq->out.rc;
if (!rc)
(void)sky_devinfo(skyreq->dev, &devdesc);
sky_devclose(skyreq->dev);
ret = snprintf_buffer(&buffer, &off, &size,
"{\n\t\"errno\": \"%s\"\n}\n",
errnoname_unsafe(-rc));
if (ret)
goto err;
(void)httpd_queue_response_and_free_buffer(req->httpd, req->httpcon,
buffer, off);
out:
MHD_resume_connection(req->httpcon);
rb_erase(&req->tentry, &req->httpd->reqs_root);
free(req);
return;
err:
free(buffer);
goto out;
}
static void sink_charging_params_skycompletion(struct sky_async_req *skyreq)
{
struct sky_dev_params *params;
struct sky_dev_desc devdesc;
struct httpd_request *req;
char *buffer = NULL;
int off = 0, size = 0;
int i, ret, rc;
req = container_of(skyreq, typeof(*req), skyreq);
rc = skyreq->out.rc;
if (!rc)
(void)sky_devinfo(skyreq->dev, &devdesc);
sky_devclose(skyreq->dev);
params = &req->skystruct.params;
ret = snprintf_buffer(&buffer, &off, &size,
"{\n\t\"errno\": \"%s\",\n\t\"params\": {\n",
errnoname_unsafe(-rc));
if (ret)
goto err;
if (!rc) {
unsigned int nr_params = SKY_SINK_NUM_DEVPARAM;
const char *str;
char val[128];
for (i = 0; i < nr_params; i++) {
str = sky_sinkparam_to_str(i);
sky_sinkparam_value_to_str(i, params,
SKY_PARAM_VALUE_TEXT,
val, sizeof(val));
ret = snprintf_buffer(&buffer, &off, &size,
"\t\t\t\"%s\": \"%s\"%s\n",
str, val,
i + 1 < nr_params ? "," : "");
if (ret)
goto err;
}
}
ret = snprintf_buffer(&buffer, &off, &size, "\t}\n}\n");
if (ret)
goto err;
(void)httpd_queue_response_and_free_buffer(req->httpd, req->httpcon,
buffer, off);
out:
MHD_resume_connection(req->httpcon);
rb_erase(&req->tentry, &req->httpd->reqs_root);
free(req);
return;
err:
free(buffer);
goto out;
}
static void charging_state_skycompletion(struct sky_async_req *skyreq)
{
struct sky_charging_state *state;
struct sky_dev_desc devdesc;
struct httpd_request *req;
char *buffer = NULL;
int off = 0, size = 0;
int ret, rc;
req = container_of(skyreq, typeof(*req), skyreq);
rc = skyreq->out.rc;
if (!rc)
(void)sky_devinfo(skyreq->dev, &devdesc);
sky_devclose(skyreq->dev);
state = &req->skystruct.charging_state;
ret = snprintf_buffer(&buffer, &off, &size,
"{\n\t\"errno\": \"%s\",\n\t\"charging-state\": {\n",
errnoname_unsafe(-rc));
if (ret)
goto err;
if (!rc) {
ret = snprintf_buffer(&buffer, &off, &size,
"\t\t\t\"state\": \"%s\",\n"
"\t\t\t\"reason\": \"%s\",\n"
"\t\t\t\"voltage-mV\": %d,\n"
"\t\t\t\"current-mA\": %d,\n"
"\t\t\t\"charging-time-sec\": %d,\n"
"\t\t\t\"state-of-charge-perc\": %d,\n"
"\t\t\t\"until-full-charge-time-sec\": %d,\n"
"\t\t\t\"source-temperature-C\": %d,\n"
"\t\t\t\"sink-temperature-C\": %d,\n"
"\t\t\t\"energy-mWh\": %d,\n"
"\t\t\t\"charge-mAh\": %d,\n"
"\t\t\t\"tx-bytes\": %d,\n"
"\t\t\t\"tx-packets\": %d,\n"
"\t\t\t\"tx-err-bytes\": %d,\n"
"\t\t\t\"tx-err-packets\": %d,\n"
"\t\t\t\"rx-bytes\": %d,\n"
"\t\t\t\"rx-packets\": %d,\n"
"\t\t\t\"rx-err-bytes\": %d,\n"
"\t\t\t\"rx-err-packets\": %d\n",
sky_devstate_to_str(devdesc.dev_type,
state->dev_hw_state),
sky_devreason_to_str(state->dev_hw_reason),
state->voltage_mV,
state->current_mA,
state->charging_secs,
state->state_of_charge,
state->until_full_secs,
state->mux_temperature_C,
state->sink_temperature_C,
state->energy_mWh,
state->charge_mAh,
state->tx.bytes,
state->tx.packets,
state->tx.err_bytes,
state->tx.err_packets,
state->rx.bytes,
state->rx.packets,
state->rx.err_bytes,
state->rx.err_packets);
if (ret)
goto err;
}
ret = snprintf_buffer(&buffer, &off, &size, "\t}\n}\n");
if (ret)
goto err;
(void)httpd_queue_response_and_free_buffer(req->httpd, req->httpcon,
buffer, off);
out:
MHD_resume_connection(req->httpcon);
rb_erase(&req->tentry, &req->httpd->reqs_root);
free(req);
return;
err:
free(buffer);
goto out;
}
static void droneport_state_skycompletion(struct sky_async_req *skyreq)
{
struct sky_droneport_state *state;
struct httpd_request *req;
char *buffer = NULL;
int off = 0, size = 0;
int ret, rc;
req = container_of(skyreq, typeof(*req), skyreq);
rc = skyreq->out.rc;
sky_devclose(skyreq->dev);
state = &req->skystruct.dp_state;
ret = snprintf_buffer(&buffer, &off, &size,
"{\n\t\"errno\": \"%s\",\n\t\"droneport-state\": {\n",
errnoname_unsafe(-rc));
if (ret)
goto err;
if (!rc) {
ret = snprintf_buffer(&buffer, &off, &size,
"\t\t\t\"is-ready\": %s,\n"
"\t\t\t\"is-opened\": %s,\n"
"\t\t\t\"is-closed\": %s,\n"
"\t\t\t\"in-progress\": %s,\n"
"\t\t\t\"landing-err\": %s\n",
state->status & SKY_DP_IS_READY ? "true" : "false",
state->status & SKY_DP_IS_OPENED ? "true" : "false",
state->status & SKY_DP_IS_CLOSED ? "true" : "false",
state->status & SKY_DP_IN_PROGRESS ? "true" : "false",
state->status & SKY_DP_LANDING_ERROR ? "true" : "false");
if (ret)
goto err;
}
ret = snprintf_buffer(&buffer, &off, &size, "\t}\n}\n");
if (ret)
goto err;
(void)httpd_queue_response_and_free_buffer(req->httpd, req->httpcon,
buffer, off);
out:
MHD_resume_connection(req->httpcon);
rb_erase(&req->tentry, &req->httpd->reqs_root);
free(req);
return;
err:
free(buffer);
goto out;
}
static void gps_data_skycompletion(struct sky_async_req *skyreq)
{
struct sky_gpsdata *gpsdata;
struct httpd_request *req;
char *buffer = NULL;
int off = 0, size = 0;
int ret, rc;
req = container_of(skyreq, typeof(*req), skyreq);
rc = skyreq->out.rc;
sky_devclose(skyreq->dev);
gpsdata = &req->skystruct.gpsdata;
ret = snprintf_buffer(&buffer, &off, &size,
"{\n\t\"errno\": \"%s\",\n\t\"gps-data\": {\n",
errnoname_unsafe(-rc));
if (ret)
goto err;
if (!rc) {
ret = snprintf_buffer(&buffer, &off, &size,
"\t\t\t\"status\": \"%s\",\n"
"\t\t\t\"satellites-used\": %d,\n"
"\t\t\t\"dop\": {\n"
"\t\t\t\t\"xdop\": \"%f\",\n"
"\t\t\t\t\"ydop\": \"%f\",\n"
"\t\t\t\t\"pdop\": \"%f\",\n"
"\t\t\t\t\"hdop\": \"%f\",\n"
"\t\t\t\t\"vdop\": \"%f\",\n"
"\t\t\t\t\"tdop\": \"%f\",\n"
"\t\t\t\t\"gdop\": \"%f\"\n"
"\t\t\t},\n"
"\t\t\t\"fix\": {\n"
"\t\t\t\t\"mode\": \"%s\",\n"
"\t\t\t\t\"time\": \"%f\",\n"
"\t\t\t\t\"latitude\": \"%f\",\n"
"\t\t\t\t\"longitude\": \"%f\",\n"
"\t\t\t\t\"altitude\": \"%f\"\n"
"\t\t\t}\n",
sky_gpsstatus_to_str(gpsdata->status),
gpsdata->satellites_used,
gpsdata->dop.xdop,
gpsdata->dop.ydop,
gpsdata->dop.pdop,
gpsdata->dop.hdop,
gpsdata->dop.vdop,
gpsdata->dop.tdop,
gpsdata->dop.gdop,
sky_gpsmode_to_str(gpsdata->fix.mode),
gpsdata->fix.time,
gpsdata->fix.latitude,
gpsdata->fix.longitude,
gpsdata->fix.altitude);
if (ret)
goto err;
}
ret = snprintf_buffer(&buffer, &off, &size, "\t}\n}\n");
if (ret)
goto err;
(void)httpd_queue_response_and_free_buffer(req->httpd, req->httpcon,
buffer, off);
out:
MHD_resume_connection(req->httpcon);
rb_erase(&req->tentry, &req->httpd->reqs_root);
free(req);
return;
err:
free(buffer);
goto out;
}
static int
charging_params_create_request(struct httpd_request *devslist_req)
{
struct sky_dev_desc *devdescs = devslist_req->skystruct.devdescs;
struct httpd_request *req;
struct sky_dev *dev;
int rc;
rc = sky_find_and_open_dev(devdescs, devslist_req->device_uuid, &dev);
if (rc)
return rc;
req = calloc(1, sizeof(*req));
if (!req) {
sky_devclose(dev);
return -ENOMEM;
}
req->httpd = devslist_req->httpd;
req->httpcon = devslist_req->httpcon;
memcpy(req->user_uuid, devslist_req->user_uuid, sizeof(uuid_t));
memcpy(req->device_uuid, devslist_req->device_uuid, sizeof(uuid_t));
/* Get all params */
req->skystruct.params.dev_params_bits = ~0;
rc = sky_asyncreq_paramsget(req->httpd->async, dev,
&req->skystruct.params, &req->skyreq);
if (rc) {
free(req);
sky_devclose(dev);
return rc;
}
sky_asyncreq_useruuidset(&req->skyreq, req->user_uuid);
sky_asyncreq_completionset(&req->skyreq, charging_params_skycompletion);
httpd_request_insert(req->httpd, req);
httpd_set_need_processing(req->httpd);
return 0;
}
struct parse_dev_arg {
struct httpd_request *req;
enum sky_dev_type dev_type;
int rc;
};
#if MHD_VERSION >= 0x00097101
static enum MHD_Result
#else
static int
#endif
parse_dev_charging_params(void *_arg, enum MHD_ValueKind kind,
const char *param, const char *value)
{
struct parse_dev_arg *arg = _arg;
struct httpd_request *req = arg->req;
unsigned i, nr_params;
int rc;
if (!strcmp(param, "user-uuid") ||
!strcmp(param, "device-uuid"))
/* Don't parse uuids */
return MHD_YES;
if (arg->dev_type == SKY_MUX_HW1)
nr_params = SKY_HW1_NUM_DEVPARAM;
else