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// SPDX-License-Identifier: GPL-3.0-or-later
#include "aclk_query.h"
#include "aclk_tx_msgs.h"
#include "../../web/server/web_client_cache.h"
static HTTP_ACL default_aclk_http_acl = HTTP_ACL_ALL_FEATURES;
struct pending_req_list {
const char *msg_id;
uint32_t hash;
int canceled;
struct pending_req_list *next;
};
static struct pending_req_list *pending_req_list_head = NULL;
static SPINLOCK pending_req_list_lock = NETDATA_SPINLOCK_INITIALIZER;
void aclk_config_get_query_scope(void) {
const char *s = config_get(CONFIG_SECTION_CLOUD, "scope", "full");
if(strcmp(s, "license manager") == 0)
default_aclk_http_acl = HTTP_ACL_ACLK_LICENSE_MANAGER;
}
bool aclk_query_scope_has(HTTP_ACL acl) {
return (default_aclk_http_acl & acl) == acl;
}
static struct pending_req_list *pending_req_list_add(const char *msg_id)
{
struct pending_req_list *new = callocz(1, sizeof(struct pending_req_list));
new->msg_id = msg_id;
new->hash = simple_hash(msg_id);
spinlock_lock(&pending_req_list_lock);
new->next = pending_req_list_head;
pending_req_list_head = new;
spinlock_unlock(&pending_req_list_lock);
return new;
}
void pending_req_list_rm(const char *msg_id)
{
uint32_t hash = simple_hash(msg_id);
struct pending_req_list *prev = NULL;
spinlock_lock(&pending_req_list_lock);
struct pending_req_list *curr = pending_req_list_head;
while (curr) {
if (curr->hash == hash && strcmp(curr->msg_id, msg_id) == 0) {
if (prev)
prev->next = curr->next;
else
pending_req_list_head = curr->next;
freez(curr);
break;
}
prev = curr;
curr = curr->next;
}
spinlock_unlock(&pending_req_list_lock);
}
int mark_pending_req_cancelled(const char *msg_id)
{
uint32_t hash = simple_hash(msg_id);
spinlock_lock(&pending_req_list_lock);
struct pending_req_list *curr = pending_req_list_head;
while (curr) {
if (curr->hash == hash && strcmp(curr->msg_id, msg_id) == 0) {
curr->canceled = 1;
spinlock_unlock(&pending_req_list_lock);
return 0;
}
curr = curr->next;
}
spinlock_unlock(&pending_req_list_lock);
return 1;
}
static bool aclk_web_client_interrupt_cb(struct web_client *w __maybe_unused, void *data)
{
struct pending_req_list *req = (struct pending_req_list *)data;
return req->canceled;
}
int http_api_v2(mqtt_wss_client client, aclk_query_t query)
{
ND_LOG_STACK lgs[] = {
ND_LOG_FIELD_TXT(NDF_SRC_TRANSPORT, "aclk"),
ND_LOG_FIELD_END(),
};
ND_LOG_STACK_PUSH(lgs);
int retval = 0;
BUFFER *local_buffer = NULL;
usec_t dt_ut = 0;
int z_ret;
BUFFER *z_buffer = buffer_create(NETDATA_WEB_RESPONSE_INITIAL_SIZE, &netdata_buffers_statistics.buffers_aclk);
struct web_client *w = web_client_get_from_cache();
web_client_set_conn_cloud(w);
w->port_acl = HTTP_ACL_ACLK | default_aclk_http_acl;
w->acl = w->port_acl;
web_client_set_permissions(w, HTTP_ACCESS_MAP_OLD_MEMBER, HTTP_USER_ROLE_MEMBER, WEB_CLIENT_FLAG_AUTH_CLOUD);
w->mode = HTTP_REQUEST_MODE_GET;
w->timings.tv_in = query->created_tv;
w->interrupt.callback = aclk_web_client_interrupt_cb;
w->interrupt.callback_data = pending_req_list_add(query->msg_id);
buffer_flush(w->response.data);
buffer_strcat(w->response.data, query->data.http_api_v2.payload);
HTTP_VALIDATION validation = http_request_validate(w);
if(validation != HTTP_VALIDATION_OK) {
nd_log(NDLS_ACCESS, NDLP_ERR, "ACLK received request is not valid, code %d", validation);
retval = 1;
w->response.code = HTTP_RESP_BAD_REQUEST;
w->response.code = (short)aclk_http_msg_v2(client, query->callback_topic, query->msg_id,
dt_ut, query->created, w->response.code,
NULL, 0);
goto cleanup;
}
web_client_timeout_checkpoint_set(w, query->timeout);
if(web_client_timeout_checkpoint_and_check(w, &dt_ut)) {
nd_log(NDLS_ACCESS, NDLP_ERR,
"QUERY CANCELED: QUEUE TIME EXCEEDED %llu ms (LIMIT %d ms)",
dt_ut / USEC_PER_MS, query->timeout);
retval = 1;
w->response.code = HTTP_RESP_SERVICE_UNAVAILABLE;
aclk_http_msg_v2_err(client, query->callback_topic, query->msg_id, w->response.code, CLOUD_EC_SND_TIMEOUT, CLOUD_EMSG_SND_TIMEOUT, NULL, 0);
goto cleanup;
}
char *path = (char *)buffer_tostring(w->url_path_decoded);
w->response.code = (short)web_client_api_request_with_node_selection(localhost, w, path);
web_client_timeout_checkpoint_response_ready(w, &dt_ut);
if (w->response.data->len && w->response.zinitialized) {
w->response.zstream.next_in = (Bytef *)w->response.data->buffer;
w->response.zstream.avail_in = w->response.data->len;
do {
w->response.zstream.avail_out = NETDATA_WEB_RESPONSE_ZLIB_CHUNK_SIZE;
w->response.zstream.next_out = w->response.zbuffer;
z_ret = deflate(&w->response.zstream, Z_FINISH);
if(z_ret < 0) {
if(w->response.zstream.msg)
netdata_log_error("Error compressing body. ZLIB error: \"%s\"", w->response.zstream.msg);
else
netdata_log_error("Unknown error during zlib compression.");
retval = 1;
w->response.code = 500;
aclk_http_msg_v2_err(client, query->callback_topic, query->msg_id, w->response.code, CLOUD_EC_ZLIB_ERROR, CLOUD_EMSG_ZLIB_ERROR, NULL, 0);
goto cleanup;
}
int bytes_to_cpy = NETDATA_WEB_RESPONSE_ZLIB_CHUNK_SIZE - w->response.zstream.avail_out;
buffer_need_bytes(z_buffer, bytes_to_cpy);
memcpy(&z_buffer->buffer[z_buffer->len], w->response.zbuffer, bytes_to_cpy);
z_buffer->len += bytes_to_cpy;
} while(z_ret != Z_STREAM_END);
// so that web_client_build_http_header
// puts correct content length into header
buffer_free(w->response.data);
w->response.data = z_buffer;
z_buffer = NULL;
}
web_client_build_http_header(w);
local_buffer = buffer_create(NETDATA_WEB_RESPONSE_INITIAL_SIZE, &netdata_buffers_statistics.buffers_aclk);
local_buffer->content_type = CT_APPLICATION_JSON;
buffer_strcat(local_buffer, w->response.header_output->buffer);
if (w->response.data->len) {
if (w->response.zinitialized) {
buffer_need_bytes(local_buffer, w->response.data->len);
memcpy(&local_buffer->buffer[local_buffer->len], w->response.data->buffer, w->response.data->len);
local_buffer->len += w->response.data->len;
} else
buffer_strcat(local_buffer, w->response.data->buffer);
}
// send msg.
w->response.code = (short)aclk_http_msg_v2(
client,
query->callback_topic,
query->msg_id,
dt_ut,
query->created,
w->response.code,
local_buffer->buffer,
local_buffer->len);
cleanup:
web_client_log_completed_request(w, false);
web_client_release_to_cache(w);
pending_req_list_rm(query->msg_id);
buffer_free(z_buffer);
buffer_free(local_buffer);
return retval;
}
int send_bin_msg(mqtt_wss_client client, aclk_query_t query)
{
// this will be simplified when legacy support is removed
aclk_send_bin_message_subtopic_pid(
client,
query->data.bin_payload.payload,
query->data.bin_payload.size,
query->data.bin_payload.topic,
query->data.bin_payload.msg_name);
return 0;
}
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