| /*
* sai-power
*
* Copyright (C) 2019 - 2025 Andy Green <andy@warmcat.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation:
* version 2.1 of the License.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301 USA
*
* This is the h1 API that can be used on the LAN side
*/
#include <libwebsockets.h>
#include <string.h>
#include <signal.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <fcntl.h>
#if defined(__linux__)
#include <unistd.h>
#endif
#if defined(__APPLE__)
#include <sys/stat.h> /* for mkdir() */
#include <unistd.h> /* for chown() */
#endif
#include "p-private.h"
extern struct lws_spawn_piped *lsp_wol;
extern struct sai_power power;
static void
saip_sul_action_power_off(struct lws_sorted_usec_list *sul)
{
saip_server_plat_t *sp = lws_container_of(sul,
saip_server_plat_t, sul_delay_off);
lws_ss_state_return_t r;
saip_pcon_t *pc;
if (!sp->pcon_list.owner) {
lwsl_notice("%s: no power-controller ss for %s\n", __func__, sp->host);
return;
}
pc = lws_container_of(sp->pcon_list.owner, saip_pcon_t,
controlled_plats_owner);
saip_notify_server_power_state(sp->host, 0, 1);
lwsl_warn("%s: powering OFF host %s via power-control %s\n", __func__, sp->host, pc->name);
r = lws_ss_client_connect(pc->ss_tasmota_off);
if (r)
lwsl_ss_err(pc->ss_tasmota_off, "failed to connect tasmota OFF secure stream: %d", r);
}
saip_server_plat_t *
find_platform(struct sai_power *pwr, const char *host)
{
lws_start_foreach_dll(struct lws_dll2 *, px, pwr->sai_server_owner.head) {
saip_server_t *s = lws_container_of(px, saip_server_t, list);
lws_start_foreach_dll(struct lws_dll2 *, px1, s->sai_plat_owner.head) {
saip_server_plat_t *sp = lws_container_of(px1, saip_server_plat_t, list);
if (!strcmp(host, sp->host))
return sp;
} lws_end_foreach_dll(px1);
} lws_end_foreach_dll(px);
return NULL;
}
void
saip_notify_server_stay_state(const char *plat_name, int stay_on)
{
sai_stay_state_update_t ssu;
saip_server_link_t *m;
saip_server_t *sps;
/* Find the first (usually only) configured sai-server connection */
if (!power.sai_server_owner.head) {
lwsl_warn("%s: No sai-server configured to notify\n", __func__);
return;
}
sps = lws_container_of(power.sai_server_owner.head, saip_server_t, list);
if (!sps->ss) {
lwsl_warn("%s: Not connected to sai-server to notify\n", __func__);
return;
}
m = (saip_server_link_t *)lws_ss_to_user_object(sps->ss);
memset(&ssu, 0, sizeof(ssu));
lws_strncpy(ssu.builder_name, plat_name, sizeof(ssu.builder_name));
ssu.stay_on = (char)stay_on;
sai_ss_serialize_queue_helper(sps->ss, &m->bl_pwr_to_srv,
lsm_schema_stay_state_update,
LWS_ARRAY_SIZE(lsm_schema_stay_state_update),
&ssu);
}
void
saip_set_stay(const char *builder_name, int stay_on)
{
saip_server_plat_t *sp = find_platform(&power, builder_name);
saip_server_link_t *pss;
saip_server_t *sps;
if (!sp)
return;
sps = lws_container_of(power.sai_server_owner.head, saip_server_t, list);
pss = (saip_server_link_t *)lws_ss_to_user_object(sps->ss);
sp->stay = (char)stay_on;
saip_notify_server_stay_state(builder_name, stay_on | sp->needed);
if (stay_on | sp->needed)
saip_builder_bringup(sps, sp, pss);
else
/*
* power-off is delayed, so we just set the stay flag...
* but let's cancel any pending power-off
*/
lws_sul_cancel(&sp->sul_delay_off);
/* Find the first (usually only) configured sai-server connection */
if (!power.sai_server_owner.head) {
lwsl_warn("%s: No sai-server configured to notify\n", __func__);
return;
}
saip_queue_stay_info(sps);
}
/*
* local-side h1 server for builders to connect to
*/
LWS_SS_USER_TYPEDEF
char payload[200];
size_t size;
size_t pos;
} local_srv_t;
static lws_ss_state_return_t
local_srv_tx(void *userobj, lws_ss_tx_ordinal_t ord, uint8_t *buf, size_t *len,
int *flags)
{
local_srv_t *g = (local_srv_t *)userobj;
lws_ss_state_return_t r = LWSSSSRET_OK;
if (g->size == g->pos)
return LWSSSSRET_TX_DONT_SEND;
if (*len > g->size - g->pos)
*len = g->size - g->pos;
if (!g->pos)
*flags |= LWSSS_FLAG_SOM;
memcpy(buf, g->payload + g->pos, *len);
g->pos += *len;
if (g->pos != g->size) /* more to do */
r = lws_ss_request_tx(lws_ss_from_user(g));
else
*flags |= LWSSS_FLAG_EOM;
lwsl_ss_info(lws_ss_from_user(g), "TX %zu, flags 0x%x, r %d", *len,
(unsigned int)*flags, (int)r);
return r;
}
static lws_ss_state_return_t
local_srv_state(void *userobj, void *sh, lws_ss_constate_t state,
lws_ss_tx_ordinal_t ack)
{
local_srv_t *g = (local_srv_t *)userobj;
char *path = NULL, pn[128];
saip_server_plat_t *sp;
saip_server_t *sps;
int apo = 0;
size_t len;
// lwsl_ss_user(lws_ss_from_user(g), "state %s", lws_ss_state_name((int)state));
switch ((int)state) {
case LWSSSCS_CREATING:
return lws_ss_request_tx(lws_ss_from_user(g));
case LWSSSCS_SERVER_TXN:
lws_ss_get_metadata(lws_ss_from_user(g), "path", (const void **)&path, &len);
// lwsl_ss_user(lws_ss_from_user(g), "LWSSSCS_SERVER_TXN path '%.*s' (%d)", (int)len, path, (int)len);
/*
* path is containing a string like "/power-off/b32"
* match the last part to a known platform and find out how
* to power that off
*/
if (lws_ss_set_metadata(lws_ss_from_user(g), "mime", "text/html", 9))
return LWSSSSRET_DISCONNECT_ME;
/*
* A transaction is starting on an accepted connection. Say
* that we're OK with the transaction, prepare the user
* object with the response, and request tx to start sending it.
*/
lws_ss_server_ack(lws_ss_from_user(g), 0);
g->pos = 0;
if (len == 1 && path[0] == '/') {
/* print controllable platforms */
g->size = 0;
lws_start_foreach_dll(struct lws_dll2 *, px, power.sai_server_owner.head) {
saip_server_t *s = lws_container_of(px, saip_server_t, list);
lws_start_foreach_dll(struct lws_dll2 *, px1, s->sai_plat_owner.head) {
saip_server_plat_t *sp = lws_container_of(px1, saip_server_plat_t, list);
if (g->size)
g->payload[g->size++] = ',';
g->size = g->size + (size_t)lws_snprintf(g->payload + g->size, sizeof(g->payload) - g->size - 3, "%s", sp->host);
} lws_end_foreach_dll(px1);
} lws_end_foreach_dll(px);
g->payload[g->size] = '\0';
goto bail;
}
if (len > 6 && !strncmp(path, "/stay/", 6)) {
lws_strnncpy(pn, &path[6], len - 6, sizeof(pn));
sp = find_platform(&power, pn);
if (sp)
g->size = (size_t)lws_snprintf(g->payload, sizeof(g->payload),
"%c", '0' + (sp->stay | sp->needed));
else
g->size = (size_t)lws_snprintf(g->payload, sizeof(g->payload),
"unknown host %s", pn);
goto bail;
}
if (len > 10 && !strncmp(path, "/power-on/", 10)) {
lws_strnncpy(pn, &path[10], len - 10, sizeof(pn));
sp = find_platform(&power, pn);
if (!sp) {
g->size = (size_t)lws_snprintf(g->payload, sizeof(g->payload),
"Unable to find host %s", pn);
goto bail;
}
if (sp->power_on_mac) {
saip_notify_server_power_state(sp->host, 1, 0);
if (write(lws_spawn_get_fd_stdxxx(lsp_wol, 0),
sp->power_on_mac, strlen(sp->power_on_mac)) !=
(ssize_t)strlen(sp->power_on_mac))
g->size = (size_t)lws_snprintf(g->payload, sizeof(g->payload),
"Write to resume %s failed %d", pn, errno);
else
g->size = (size_t)lws_snprintf(g->payload, sizeof(g->payload),
"Resumed %s with stay", pn);
sp->stay = 1;
goto bail;
}
if (sp->pcon_list.owner) {
saip_pcon_t *pc = lws_container_of(sp->pcon_list.owner,
saip_pcon_t,
controlled_plats_owner);
if (lws_ss_client_connect(pc->ss_tasmota_on)) {
lwsl_ss_err(pc->ss_tasmota_on, "failed to connect tasmota ON secure stream");
g->size = (size_t)lws_snprintf(g->payload, sizeof(g->payload),
"power-on ss failed create %s", sp->host);
goto bail;
}
} else {
g->size = (size_t)lws_snprintf(g->payload, sizeof(g->payload),
"no power-controller entry for %s", pn);
goto bail;
}
lwsl_warn("%s: powered on host %s\n", __func__, sp->host);
sp->stay = 1; /* so builder can understand it's manual */
saip_notify_server_power_state(sp->host, 1, 0);
sps = lws_container_of(power.sai_server_owner.head,
saip_server_t, list);
saip_queue_stay_info(sps);
g->size = (size_t)lws_snprintf(g->payload, sizeof(g->payload),
"Manually powered on %s", sp->host);
goto bail;
}
if (len > 16 && !strncmp(path, "/auto-power-off/", 16)) {
apo = 1;
lws_strnncpy(pn, &path[16], len - 16, sizeof(pn));
goto power_off;
}
if (len < 11 || strncmp(path, "/power-off/", 11)) {
g->size = (size_t)lws_snprintf(g->payload, sizeof(g->payload),
"URL path needs to start with /power-off/");
goto bail;
}
lws_strnncpy(pn, &path[11], len - 11, sizeof(pn));
power_off:
/*
* Let's have a look at the platform
*/
g->size = (size_t)lws_snprintf(g->payload, sizeof(g->payload),
"Unable to find host %s", pn);
sp = find_platform(&power, pn);
if (sp) {
if (apo) {
char needs[128];
/*
* Since it's not a manual request,
* we should deny it if any deps still need us
*/
needs[0] = '\0';
lws_start_foreach_dll(struct lws_dll2 *, px1, sp->dependencies_owner.head) {
saip_server_plat_t *sp1 = lws_container_of(px1, saip_server_plat_t, dependencies_list);
if (sp1->needed)
lws_snprintf(needs, sizeof(needs) - 1 - strlen(needs), "%s ", sp1->name);
} lws_end_foreach_dll(px1);
if (needs[0] || sp->needed) {
g->size = (size_t)lws_snprintf(g->payload, sizeof(g->payload),
"NAK: %s needed: %d, deps needed: '%s'",
pn, sp->needed, needs);
goto bail;
}
}
/*
* OK this is it, schedule it to happen
*/
lws_sul_schedule(lws_ss_cx_from_user(g), 0,
&sp->sul_delay_off,
saip_sul_action_power_off,
3 * LWS_USEC_PER_SEC);
lwsl_warn("%s: scheduled powering off host %s\n",
__func__, sp->host);
g->size = (size_t)lws_snprintf(g->payload, sizeof(g->payload),
"ACK: Scheduled powering off host %s", sp->host);
sp->stay = 0; /* reset any manual power up */
}
bail:
return lws_ss_request_tx_len(lws_ss_from_user(g),
(unsigned long)g->size);
}
return LWSSSSRET_OK;
}
LWS_SS_INFO("local", local_srv_t)
.tx = local_srv_tx,
.state = local_srv_state,
};
|