mirror of
https://github.com/pi-hole/FTL.git
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DL6ER
100 lines
2.7 KiB
C
100 lines
2.7 KiB
C
/* Pi-hole: A black hole for Internet advertisements
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* (c) 2023 Pi-hole, LLC (https://pi-hole.net)
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* Network-wide ad blocking via your own hardware.
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*
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* FTL Engine
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* API Implementation /api/logs
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*
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* This file is copyright under the latest version of the EUPL.
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* Please see LICENSE file for your rights under this license. */
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#include "FTL.h"
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#include "webserver/http-common.h"
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#include "webserver/json_macros.h"
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#include "api/api.h"
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// struct fifologData
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#include "log.h"
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#include "config/config.h"
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// main_pid()
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#include "signals.h"
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// fifologData is allocated in shared memory for cross-fork compatibility
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int api_logs(struct ftl_conn *api)
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{
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unsigned int start = 0u;
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if(api->request->query_string != NULL)
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{
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// Does the user request an ID to sent from?
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unsigned int nextID;
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if(get_uint_var(api->request->query_string, "nextID", &nextID))
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{
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if(nextID >= fifo_log->logs[api->opts.which].next_id)
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{
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// Do not return any data
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start = LOG_SIZE;
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}
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else if((fifo_log->logs[api->opts.which].next_id > LOG_SIZE) && nextID < (fifo_log->logs[api->opts.which].next_id) - LOG_SIZE)
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{
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// Requested an ID smaller than the lowest one we have
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// We return the entire buffer
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start = 0u;
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}
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else if(fifo_log->logs[api->opts.which].next_id >= LOG_SIZE)
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{
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// Reply with partial buffer, measure from the end
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// (the log is full)
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start = LOG_SIZE - (fifo_log->logs[api->opts.which].next_id - nextID);
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}
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else
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{
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// Reply with partial buffer, measure from the start
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// (the log is not yet full)
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start = nextID;
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}
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}
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}
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// Process data
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cJSON *json = JSON_NEW_OBJECT();
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cJSON *log = JSON_NEW_ARRAY();
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for(unsigned int i = start; i < LOG_SIZE; i++)
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{
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if(fifo_log->logs[api->opts.which].timestamp[i] < 1.0)
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{
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// Uninitialized buffer entry
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break;
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}
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cJSON *entry = JSON_NEW_OBJECT();
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JSON_ADD_NUMBER_TO_OBJECT(entry, "timestamp", fifo_log->logs[api->opts.which].timestamp[i]);
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JSON_REF_STR_IN_OBJECT(entry, "message", fifo_log->logs[api->opts.which].message[i]);
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JSON_REF_STR_IN_OBJECT(entry, "prio", fifo_log->logs[api->opts.which].prio[i]);
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JSON_ADD_ITEM_TO_ARRAY(log, entry);
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}
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JSON_ADD_ITEM_TO_OBJECT(json, "log", log);
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JSON_ADD_NUMBER_TO_OBJECT(json, "nextID", fifo_log->logs[api->opts.which].next_id);
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JSON_ADD_NUMBER_TO_OBJECT(json, "pid", main_pid());
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// Add file name
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const char *logfile = NULL;
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switch(api->opts.which)
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{
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case FIFO_FTL:
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logfile = config.files.log.ftl.v.s;
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break;
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case FIFO_DNSMASQ:
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logfile = config.files.log.dnsmasq.v.s;
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break;
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case FIFO_WEBSERVER:
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logfile = config.files.log.webserver.v.s;
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break;
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case FIFO_MAX:
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// This should never happen
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break;
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}
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JSON_REF_STR_IN_OBJECT(json, "file", logfile);
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// Send data
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JSON_SEND_OBJECT(json);
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}
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