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conky/src/weather.cc

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/* -*- mode: c++; c-basic-offset: 4; tab-width: 4; indent-tabs-mode: t -*-
* vim: ts=4 sw=4 noet ai cindent syntax=cpp
*
* Conky, a system monitor, based on torsmo
*
* Please see COPYING for details
*
* Copyright (c) 2005-2010 Brenden Matthews, Philip Kovacs, et. al.
* (see AUTHORS)
* All rights reserved.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include "config.h"
#include "conky.h"
#include "logging.h"
#include "weather.h"
#include "temphelper.h"
#include "text_object.h"
#include "ccurl_thread.h"
#include <time.h>
#include <ctype.h>
#include <mutex>
#include <string>
#ifdef MATH
#include <math.h>
#endif /* MATH */
#ifdef BUILD_WEATHER_XOAP
#include <libxml/parser.h>
#include <libxml/xpath.h>
#endif /* BUILD_WEATHER_XOAP */
/* WEATHER data */
typedef struct PWEATHER_ {
char lastupd[32];
#ifdef BUILD_WEATHER_XOAP
char xoap_t[32];
char icon[3];
#endif /* BUILD_WEATHER_XOAP */
int temp;
int dew;
int cc;
int bar;
int wind_s;
int wind_d;
int hmid;
int wc;
} PWEATHER;
#ifdef BUILD_WEATHER_XOAP
#define FORECAST_DAYS 5
typedef struct PWEATHER_FORECAST_ {
int hi[FORECAST_DAYS];
int low[FORECAST_DAYS];
char icon[FORECAST_DAYS][3];
char xoap_t[FORECAST_DAYS][32];
char day[FORECAST_DAYS][9];
char date[FORECAST_DAYS][7];
int wind_s[FORECAST_DAYS];
int wind_d[FORECAST_DAYS];
int hmid[FORECAST_DAYS];
int ppcp[FORECAST_DAYS];
} PWEATHER_FORECAST;
/* Xpath expressions for BUILD_WEATHER_XOAP xml parsing */
#define NUM_XPATH_EXPRESSIONS_CC 8
const char *xpath_expression_cc[NUM_XPATH_EXPRESSIONS_CC] = {
"/weather/cc/lsup", "/weather/cc/tmp", "/weather/cc/t",
"/weather/cc/bar/r", "/weather/cc/wind/s", "/weather/cc/wind/d",
"/weather/cc/hmid", "/weather/cc/icon"
};
#define NUM_XPATH_EXPRESSIONS_DF 10
const char *xpath_expression_df[NUM_XPATH_EXPRESSIONS_DF] = {
"/weather/dayf/day[*]/hi", "/weather/dayf/day[*]/low",
"/weather/dayf/day[*]/part[1]/icon", "/weather/dayf/day[*]/part[1]/t",
"/weather/dayf/day[*]/part[1]/wind/s","/weather/dayf/day[*]/part[1]/wind/d",
"/weather/dayf/day[*]/part[1]/ppcp", "/weather/dayf/day[*]/part[1]/hmid",
"/weather/dayf/day[*]/@t", "/weather/dayf/day[*]/@dt"
};
#endif /* BUILD_WEATHER_XOAP */
/* Possible sky conditions */
#define NUM_CC_CODES 6
const char *CC_CODES[NUM_CC_CODES] = {
"SKC", "CLR", "FEW", "SCT", "BKN", "OVC"
};
/* Possible weather modifiers */
#define NUM_WM_CODES 9
const char *WM_CODES[NUM_WM_CODES] = {
"VC", "MI", "BC", "PR", "TS", "BL",
"SH", "DR", "FZ"
};
/* Possible weather conditions */
#define NUM_WC_CODES 17
const char *WC_CODES[NUM_WC_CODES] = {
"DZ", "RA", "GR", "GS", "SN", "SG",
"FG", "HZ", "FU", "BR", "DU", "SA",
"FC", "PO", "SQ", "SS", "DS"
};
static ccurl_location_list locations_cc;
#ifdef BUILD_WEATHER_XOAP
static ccurl_location_list locations_df;
#endif
struct weather_data {
char uri[128];
char data_type[32];
int interval;
};
#ifdef BUILD_WEATHER_XOAP
struct weather_forecast_data {
char uri[128];
unsigned int day;
char data_type[32];
int interval;
};
#endif
void weather_free_info(void)
{
ccurl_free_locations(locations_cc);
#ifdef BUILD_WEATHER_XOAP
ccurl_free_locations(locations_df);
#endif
}
int rel_humidity(int dew_point, int air) {
const float a = 17.27f;
const float b = 237.7f;
float diff = a*(dew_point/(b+dew_point)-air/(b+air));
#ifdef MATH
return (int)(100.f*expf(diff));
#else
return (int)(16.666667163372f*(6.f+diff*(6.f+diff*(3.f+diff))));
#endif /* MATH */
}
#ifdef BUILD_WEATHER_XOAP
static void parse_df(PWEATHER_FORECAST *res, xmlXPathContextPtr xpathCtx)
{
int i, j, k;
char *content = NULL;
xmlXPathObjectPtr xpathObj;
xpathObj = xmlXPathEvalExpression((const xmlChar *)"/error/err", xpathCtx);
if (xpathObj && xpathObj->nodesetval && xpathObj->nodesetval->nodeNr > 0 &&
xpathObj->nodesetval->nodeTab[0]->type == XML_ELEMENT_NODE) {
content = (char *)xmlNodeGetContent(xpathObj->nodesetval->nodeTab[0]);
NORM_ERR("XOAP error: %s", content);
xmlFree(content);
xmlXPathFreeObject(xpathObj);
return;
}
xmlXPathFreeObject(xpathObj);
for (i = 0; i < NUM_XPATH_EXPRESSIONS_DF; i++) {
xpathObj = xmlXPathEvalExpression((const xmlChar *)xpath_expression_df[i], xpathCtx);
if (xpathObj != NULL) {
xmlNodeSetPtr nodes = xpathObj->nodesetval;
k = 0;
for (j = 0; j < nodes->nodeNr; ++j) {
if (nodes->nodeTab[j]->type == XML_ELEMENT_NODE) {
content = (char *)xmlNodeGetContent(nodes->nodeTab[k]);
switch(i) {
case 0:
res->hi[k] = atoi(content);
break;
case 1:
res->low[k] = atoi(content);
break;
case 2:
strncpy(res->icon[k], content, 2);
case 3:
strncpy(res->xoap_t[k], content, 31);
break;
case 4:
res->wind_s[k] = atoi(content);
break;
case 5:
res->wind_d[k] = atoi(content);
break;
case 6:
res->ppcp[k] = atoi(content);
break;
case 7:
res->hmid[k] = atoi(content);
}
} else if (nodes->nodeTab[j]->type == XML_ATTRIBUTE_NODE) {
content = (char *)xmlNodeGetContent(nodes->nodeTab[k]);
switch(i) {
case 8:
strncpy(res->day[k], content, 8);
break;
case 9:
strncpy(res->date[k], content, 6);
}
}
xmlFree(content);
if (++k == FORECAST_DAYS) break;
}
}
xmlXPathFreeObject(xpathObj);
}
return;
}
static void parse_weather_forecast_xml(PWEATHER_FORECAST *res, const char *data)
{
xmlDocPtr doc;
xmlXPathContextPtr xpathCtx;
if (!(doc = xmlReadMemory(data, strlen(data), "", NULL, 0))) {
NORM_ERR("weather_forecast: can't read xml data");
return;
}
xpathCtx = xmlXPathNewContext(doc);
if(xpathCtx == NULL) {
NORM_ERR("weather_forecast: unable to create new XPath context");
xmlFreeDoc(doc);
return;
}
parse_df(res, xpathCtx);
xmlXPathFreeContext(xpathCtx);
xmlFreeDoc(doc);
return;
}
static void parse_cc(PWEATHER *res, xmlXPathContextPtr xpathCtx)
{
int i;
char *content;
xmlXPathObjectPtr xpathObj;
xpathObj = xmlXPathEvalExpression((const xmlChar *)"/error/err", xpathCtx);
if (xpathObj && xpathObj->nodesetval && xpathObj->nodesetval->nodeNr > 0 &&
xpathObj->nodesetval->nodeTab[0]->type == XML_ELEMENT_NODE) {
content = (char *)xmlNodeGetContent(xpathObj->nodesetval->nodeTab[0]);
NORM_ERR("XOAP error: %s", content);
xmlFree(content);
xmlXPathFreeObject(xpathObj);
return;
}
xmlXPathFreeObject(xpathObj);
for (i = 0; i < NUM_XPATH_EXPRESSIONS_CC; i++) {
xpathObj = xmlXPathEvalExpression((const xmlChar *)xpath_expression_cc[i], xpathCtx);
if (xpathObj && xpathObj->nodesetval && xpathObj->nodesetval->nodeNr >0 &&
xpathObj->nodesetval->nodeTab[0]->type ==
XML_ELEMENT_NODE) {
content = (char *)xmlNodeGetContent(xpathObj->nodesetval->nodeTab[0]);
switch(i) {
case 0:
strncpy(res->lastupd, content, 31);
break;
case 1:
res->temp = atoi(content);
break;
case 2:
strncpy(res->xoap_t, content, 31);
break;
case 3:
res->bar = atoi(content);
break;
case 4:
res->wind_s = atoi(content);
break;
case 5:
res->wind_d = atoi(content);
break;
case 6:
res->hmid = atoi(content);
break;
case 7:
strncpy(res->icon, content, 2);
}
xmlFree(content);
}
xmlXPathFreeObject(xpathObj);
}
return;
}
static void parse_weather_xml(PWEATHER *res, const char *data)
{
xmlDocPtr doc;
xmlXPathContextPtr xpathCtx;
if (!(doc = xmlReadMemory(data, strlen(data), "", NULL, 0))) {
NORM_ERR("weather: can't read xml data");
return;
}
xpathCtx = xmlXPathNewContext(doc);
if(xpathCtx == NULL) {
NORM_ERR("weather: unable to create new XPath context");
xmlFreeDoc(doc);
return;
}
parse_cc(res, xpathCtx);
xmlXPathFreeContext(xpathCtx);
xmlFreeDoc(doc);
return;
}
#endif /* BUILD_WEATHER_XOAP */
/*
* Horrible hack to avoid using regexes
*
*/
static inline void parse_token(PWEATHER *res, char *token) {
int i;
char s_tmp[64];
switch (strlen(token)) {
//Check all tokens 2 chars long
case 2:
//Check if token is a weather condition
for (i=0; i<2; i++) {
if (!isalpha(token[i])) break;
}
if (i==2) {
for(i=0; i<NUM_WC_CODES; i++) {
if (!strncmp(token, WC_CODES[i], 2)) {
res->wc=i+1;
break;
}
}
return;
}
//Check for CB
if (!strcmp(token, "CB")) {
res->cc = 8;
return;
}
break;
//Check all tokens 3 chars long
case 3:
//Check if token is a modified weather condition
if ((token[0] == '+') || (token[0] == '-')) {
for (i=1; i<3; i++) {
if (!isalpha(token[i])) break;
}
if (i==3) {
for(i=0; i<NUM_WC_CODES; i++) {
if (!strncmp(&token[1], WC_CODES[i], 2)) {
res->wc=i+1;
break;
}
}
return;
}
}
//Check for NCD or NSC
if ((!strcmp(token, "NCD")) || (!strcmp(token, "NSC"))) {
res->cc = 1;
return;
}
//Check for TCU
if (!strcmp(token, "TCU")) {
res->cc = 7;
return;
}
break;
//Check all tokens 4 chars long
case 4:
//Check if token is a modified weather condition
for(i=0; i<NUM_WM_CODES; i++) {
if (!strncmp(token, WM_CODES[i], 2)) {
for(i=0; i<NUM_WC_CODES; i++) {
if (!strncmp(&token[2], WC_CODES[i], 2)) {
res->wc=i+1;
return;
}
}
break;
}
}
break;
//Check all tokens 5 chars long
case 5:
//Check for CAVOK
if (!strcmp(token, "CAVOK")) {
res->cc = 1;
return;
}
//Check if token is the temperature
for (i=0; i<2; i++) {
if (!isdigit(token[i])) break;
}
if ((i==2) && (token[2] == '/')) {
for (i=3; i<5; i++) {
if (!isdigit(token[i])) break;
}
if (i==5) {
//First 2 digits gives the air temperature
res->temp=atoi(token);
//4th and 5th digits gives the dew point temperature
res->dew=atoi(&token[3]);
//Compute humidity
res->hmid = rel_humidity(res->dew, res->temp);
return;
}
}
//Check if token is the pressure
if ((token[0] == 'Q') || (token[0] == 'A')) {
for (i=1; i<5; i++) {
if (!isdigit(token[i])) break;
}
if (i==5) {
if (token[0] == 'A') {
//Convert inches of mercury to mbar
res->bar = (int)(atoi(&token[1])*0.338637526f);
return;
}
//Last 4 digits is pressure im mbar
res->bar = atoi(&token[1]);
return;
}
}
//Check if token is a modified weather condition
if ((token[0] == '+') || (token[0] == '-')) {
for(i=0; i<NUM_WM_CODES; i++) {
if (!strncmp(&token[1], WM_CODES[i], 2)) {
for(i=0; i<NUM_WC_CODES; i++) {
if (!strncmp(&token[3], WC_CODES[i], 2)) {
res->wc=i+1;
return;
}
}
break;
}
}
}
break;
//Check all tokens 6 chars long
case 6:
//Check if token is the cloud cover
for (i=0; i<3; i++) {
if (!isalpha(token[i])) break;
}
if (i==3) {
for (i=3; i<6; i++) {
if (!isdigit(token[i])) break;
}
if (i==6) {
//Check if first 3 digits gives the cloud cover condition
for(i=0; i<NUM_CC_CODES; i++) {
if (!strncmp(token, CC_CODES[i], 3)) {
res->cc=i+1;
break;
}
}
return;
}
}
//Check if token is positive temp and negative dew
for (i=0; i<2; i++) {
if (!isdigit(token[i])) break;
}
if ((i==2) && (token[2] == '/') && (token[3] == 'M')) {
for (i=4; i<6; i++) {
if (!isdigit(token[i])) break;
}
if (i==6) {
//1st and 2nd digits gives the temperature
res->temp = atoi(token);
//5th and 6th digits gives the dew point temperature
res->dew = -atoi(&token[4]);
//Compute humidity
res->hmid = rel_humidity(res->dew, res->temp);
return;
}
}
break;
//Check all tokens 7 chars long
case 7:
//Check if token is the observation time
for (i=0; i<6; i++) {
if (!isdigit(token[i])) break;
}
if ((i==6) && (token[6] == 'Z')) return;
//Check if token is the wind speed/direction in knots
for (i=0; i<5; i++) {
if (!isdigit(token[i])) break;
}
if ((i==5) && (token[5] == 'K') && (token[6] == 'T')) {
//First 3 digits are wind direction
strncpy(s_tmp, token, 3);
s_tmp[3]='\0';
res->wind_d=atoi(s_tmp);
//4th and 5th digit are wind speed in knots (convert to km/hr)
res->wind_s = (int)(atoi(&token[3])*1.852);
return;
}
//Check if token is negative temperature
if ((token[0] == 'M') && (token[4] == 'M')) {
for (i=1; i<3; i++) {
if (!isdigit(token[i])) break;
}
if ((i==3) && (token[3] == '/')) {
for (i=5; i<7; i++) {
if (!isdigit(token[i])) break;
}
if (i==7) {
//2nd and 3rd digits gives the temperature
res->temp = -atoi(&token[1]);
//6th and 7th digits gives the dew point temperature
res->dew = -atoi(&token[5]);
//Compute humidity
res->hmid = rel_humidity(res->dew, res->temp);
return;
}
}
}
//Check if token is wind variability
for (i=0; i<3; i++) {
if (!isdigit(token[i])) break;
}
if ((i==3) && (token[3] == 'V')) {
for (i=4; i<7; i++) {
if (!isdigit(token[i])) break;
}
if (i==7) return;
}
break;
//Check all tokens 8 chars long
case 8:
//Check if token is the wind speed/direction in m/s
for (i=0; i<5; i++) {
if (!isdigit(token[i])) break;
}
if ((i==5)&&(token[5] == 'M')&&(token[6] == 'P')&&(token[7] == 'S')) {
//First 3 digits are wind direction
strncpy(s_tmp, token, 3);
s_tmp[3]='\0';
res->wind_d=atoi(s_tmp);
//4th and 5th digit are wind speed in m/s (convert to km/hr)
res->wind_s = (int)(atoi(&token[3])*3.6);
return;
}
default:
//printf("token : %s\n", token);
break;
}
}
#ifdef BUILD_WEATHER_XOAP
void parse_weather_forecast(void *result, const char *data)
{
PWEATHER_FORECAST *res = (PWEATHER_FORECAST*)result;
/* Reset results */
memset(res, 0, sizeof(PWEATHER_FORECAST));
//Check if it is an xml file
if ( strncmp(data, "<?xml ", 6) == 0 ) {
parse_weather_forecast_xml(res, data);
}
}
#endif /* BUILD_WEATHER_XOAP */
void parse_weather(void *result, const char *data)
{
PWEATHER *res = (PWEATHER*)result;
/* Reset results */
memset(res, 0, sizeof(PWEATHER));
#ifdef BUILD_WEATHER_XOAP
//Check if it is an xml file
if ( strncmp(data, "<?xml ", 6) == 0 ) {
parse_weather_xml(res, data);
} else
#endif /* BUILD_WEATHER_XOAP */
{
//We assume its a text file
char s_tmp[256];
const char delim[] = " ";
//Divide time stamp and metar data
if (sscanf(data, "%[^'\n']\n%[^'\n']", res->lastupd, s_tmp) == 2) {
//Process all tokens
char *p_tok = NULL;
char *p_save = NULL;
if ((strtok_r(s_tmp, delim, &p_save)) != NULL) {
//Jump first token, must be icao
p_tok = strtok_r(NULL, delim, &p_save);
do {
parse_token(res, p_tok);
p_tok = strtok_r(NULL, delim, &p_save);
} while (p_tok != NULL);
}
return;
}
else {
return;
}
}
}
void wind_deg_to_dir(char *p, int p_max_size, int wind_deg) {
if ((wind_deg >= 349) || (wind_deg < 12)) {
strncpy(p, "N", p_max_size);
} else if (wind_deg < 33) {
strncpy(p, "NNE", p_max_size);
} else if (wind_deg < 57) {
strncpy(p, "NE", p_max_size);
} else if (wind_deg < 79) {
strncpy(p, "ENE", p_max_size);
} else if (wind_deg < 102) {
strncpy(p, "E", p_max_size);
} else if (wind_deg < 124) {
strncpy(p, "ESE", p_max_size);
} else if (wind_deg < 147) {
strncpy(p, "SE", p_max_size);
} else if (wind_deg < 169) {
strncpy(p, "SSE", p_max_size);
} else if (wind_deg < 192) {
strncpy(p, "S", p_max_size);
} else if (wind_deg < 214) {
strncpy(p, "SSW", p_max_size);
} else if (wind_deg < 237) {
strncpy(p, "SW", p_max_size);
} else if (wind_deg < 259) {
strncpy(p, "WSW", p_max_size);
} else if (wind_deg < 282) {
strncpy(p, "W", p_max_size);
} else if (wind_deg < 304) {
strncpy(p, "WNW", p_max_size);
} else if (wind_deg < 327) {
strncpy(p, "NW", p_max_size);
} else if (wind_deg < 349) {
strncpy(p, "NNW", p_max_size);
};
}
#ifdef BUILD_WEATHER_XOAP
static void weather_forecast_process_info(char *p, int p_max_size, char *uri, unsigned int day, char *data_type, int interval)
{
PWEATHER_FORECAST *data;
ccurl_location_ptr curloc = ccurl_find_location(locations_df, uri);
if (!curloc->p_timed_thread) {
curloc->result = (char*)malloc(sizeof(PWEATHER_FORECAST));
memset(curloc->result, 0, sizeof(PWEATHER_FORECAST));
curloc->process_function = std::bind(parse_weather_forecast,
std::placeholders::_1, std::placeholders::_2);
ccurl_init_thread(curloc, interval);
if (!curloc->p_timed_thread) {
NORM_ERR("error setting up weather_forecast thread");
}
}
std::lock_guard<std::mutex> lock(curloc->p_timed_thread->mutex());
data = (PWEATHER_FORECAST*)curloc->result;
if (strcmp(data_type, "hi") == EQUAL) {
temp_print(p, p_max_size, data->hi[day], TEMP_CELSIUS);
} else if (strcmp(data_type, "low") == EQUAL) {
temp_print(p, p_max_size, data->low[day], TEMP_CELSIUS);
} else if (strcmp(data_type, "icon") == EQUAL) {
strncpy(p, data->icon[day], p_max_size);
} else if (strcmp(data_type, "forecast") == EQUAL) {
strncpy(p, data->xoap_t[day], p_max_size);
} else if (strcmp(data_type, "wind_speed") == EQUAL) {
snprintf(p, p_max_size, "%d", data->wind_s[day]);
} else if (strcmp(data_type, "wind_dir") == EQUAL) {
wind_deg_to_dir(p, p_max_size, data->wind_d[day]);
} else if (strcmp(data_type, "wind_dir_DEG") == EQUAL) {
snprintf(p, p_max_size, "%d", data->wind_d[day]);
} else if (strcmp(data_type, "humidity") == EQUAL) {
snprintf(p, p_max_size, "%d", data->hmid[day]);
} else if (strcmp(data_type, "precipitation") == EQUAL) {
snprintf(p, p_max_size, "%d", data->ppcp[day]);
} else if (strcmp(data_type, "day") == EQUAL) {
strncpy(p, data->day[day], p_max_size);
} else if (strcmp(data_type, "date") == EQUAL) {
strncpy(p, data->date[day], p_max_size);
}
}
#endif /* BUILD_WEATHER_XOAP */
static void weather_process_info(char *p, int p_max_size, char *uri, char *data_type, int interval)
{
static const char *wc[] = {
"", "drizzle", "rain", "hail", "soft hail",
"snow", "snow grains", "fog", "haze", "smoke",
"mist", "dust", "sand", "funnel cloud tornado",
"dust/sand", "squall", "sand storm", "dust storm"
};
PWEATHER *data;
ccurl_location_ptr curloc = ccurl_find_location(locations_cc, uri);
if (!curloc->p_timed_thread) {
curloc->result = (char*)malloc(sizeof(PWEATHER));
memset(curloc->result, 0, sizeof(PWEATHER));
curloc->process_function = std::bind(parse_weather,
std::placeholders::_1, std::placeholders::_2);
ccurl_init_thread(curloc, interval);
if (!curloc->p_timed_thread) {
NORM_ERR("error setting up weather thread");
}
}
std::lock_guard<std::mutex> lock(curloc->p_timed_thread->mutex());
data = (PWEATHER*)curloc->result;
if (strcmp(data_type, "last_update") == EQUAL) {
strncpy(p, data->lastupd, p_max_size);
} else if (strcmp(data_type, "temperature") == EQUAL) {
temp_print(p, p_max_size, data->temp, TEMP_CELSIUS);
} else if (strcmp(data_type, "cloud_cover") == EQUAL) {
#ifdef BUILD_WEATHER_XOAP
if (data->xoap_t[0] != '\0') {
char *s = p;
strncpy(p, data->xoap_t, p_max_size);
while (*s) {
*s = tolower(*s);
s++;
}
} else
#endif /* BUILD_WEATHER_XOAP */
if (data->cc == 0) {
strncpy(p, "", p_max_size);
} else if (data->cc < 3) {
strncpy(p, "clear", p_max_size);
} else if (data->cc < 5) {
strncpy(p, "partly cloudy", p_max_size);
} else if (data->cc == 5) {
strncpy(p, "cloudy", p_max_size);
} else if (data->cc == 6) {
strncpy(p, "overcast", p_max_size);
} else if (data->cc == 7) {
strncpy(p, "towering cumulus", p_max_size);
} else {
strncpy(p, "cumulonimbus", p_max_size);
}
#ifdef BUILD_WEATHER_XOAP
} else if (strcmp(data_type, "icon") == EQUAL) {
strncpy(p, data->icon, p_max_size);
#endif /* BUILD_WEATHER_XOAP */
} else if (strcmp(data_type, "pressure") == EQUAL) {
snprintf(p, p_max_size, "%d", data->bar);
} else if (strcmp(data_type, "wind_speed") == EQUAL) {
snprintf(p, p_max_size, "%d", data->wind_s);
} else if (strcmp(data_type, "wind_dir") == EQUAL) {
wind_deg_to_dir(p, p_max_size, data->wind_d);
} else if (strcmp(data_type, "wind_dir_DEG") == EQUAL) {
snprintf(p, p_max_size, "%d", data->wind_d);
} else if (strcmp(data_type, "humidity") == EQUAL) {
snprintf(p, p_max_size, "%d", data->hmid);
} else if (strcmp(data_type, "weather") == EQUAL) {
strncpy(p, wc[data->wc], p_max_size);
}
}
#ifdef BUILD_WEATHER_XOAP
/* xoap suffix for weather from weather.com */
namespace {
std::string xoap_cc;
std::string xoap_df;
}
#endif /* BUILD_WEATHER_XOAP */
static int process_weather_uri(char *uri, char *locID, int dayf UNUSED_ATTR)
{
/* locID MUST BE upper-case */
char *tmp_p = locID;
while (*tmp_p) {
*tmp_p = toupper(*tmp_p);
tmp_p++;
}
/* Construct complete uri */
#ifdef BUILD_WEATHER_XOAP
if (strstr(uri, "xoap.weather.com")) {
if ((dayf == 0) && (xoap_cc.length() != 0)) {
strcat(uri, locID);
strcat(uri, xoap_cc.c_str());
} else if ((dayf == 1) && (xoap_df.length() != 0)) {
strcat(uri, locID);
strcat(uri, xoap_df.c_str());
} else {
return 0;
}
} else
#endif /* BUILD_WEATHER_XOAP */
if (strstr(uri, "weather.noaa.gov")) {
strcat(uri, locID);
strcat(uri, ".TXT");
} else if (!strstr(uri, "localhost") && !strstr(uri, "127.0.0.1")) {
return -1;
}
return 0;
}
#ifdef BUILD_WEATHER_XOAP
/*
* TODO: make the xoap keys file readable from the config file
* make the keys directly readable from the config file
* make the xoap keys file giveable as a command line option
*/
void load_xoap_keys(void)
{
FILE *fp;
char *par = (char *) malloc(11 * sizeof(char));
char *key = (char *) malloc(17 * sizeof(char));
std::string xoap = to_real_path(XOAP_FILE);
fp = fopen(xoap.c_str(), "r");
if (fp != NULL) {
if (fscanf(fp, "%10s %16s", par, key) == 2) {
xoap_cc = std::string("?cc=*&link=xoap&prod=xoap&par=")
+ par + "&key=" + key + "&unit=m";
/* TODO: Use FORECAST_DAYS instead of 5 */
xoap_df = std::string("?dayf=5&link=xoap&prod=xoap&par=")
+ par + "&key=" + key + "&unit=m";
}
fclose(fp);
}
free(par);
free(key);
}
void scan_weather_forecast_arg(struct text_object *obj, const char *arg, void *free_at_crash)
{
int argc;
struct weather_forecast_data *wfd;
float interval = 0;
char *locID = (char *) malloc(9 * sizeof(char));
wfd = (struct weather_forecast_data *)malloc(sizeof(struct weather_forecast_data));
memset(wfd, 0, sizeof(struct weather_forecast_data));
argc = sscanf(arg, "%119s %8s %1u %31s %f", wfd->uri, locID, &wfd->day, wfd->data_type, &interval);
if (argc < 4) {
free(locID);
free(wfd);
CRIT_ERR(obj, free_at_crash, "wrong number of arguments for $weather_forecast");
}
if (process_weather_uri(wfd->uri, locID, 1)) {
free(locID);
free(wfd);
CRIT_ERR(obj, free_at_crash, \
"could not recognize the weather forecast uri");
}
/* Limit the day between 0 (today) and FORECAST_DAYS */
if (wfd->day >= FORECAST_DAYS) {
wfd->day = FORECAST_DAYS-1;
}
/* Limit the data retrieval interval to 3 hours and an half */
if (interval < 210) {
interval = 210;
}
/* Convert to seconds */
wfd->interval = interval * 60;
free(locID);
DBGP("weather_forecast: fetching %s for day %d from %s every %d seconds", \
wfd->data_type, wfd->day, wfd->uri, wfd->interval);
obj->data.opaque = wfd;
}
void print_weather_forecast(struct text_object *obj, char *p, int p_max_size)
{
struct weather_forecast_data *wfd = (struct weather_forecast_data *)obj->data.opaque;
if (!wfd || !wfd->uri) {
NORM_ERR("error processing weather forecast data, check that you have a valid XOAP key if using XOAP.");
return;
}
weather_forecast_process_info(p, p_max_size, wfd->uri, wfd->day, wfd->data_type, wfd->interval);
}
#endif /* BUILD_WEATHER_XOAP */
void scan_weather_arg(struct text_object *obj, const char *arg, void *free_at_crash)
{
int argc;
struct weather_data *wd;
char *locID = (char *) malloc(9 * sizeof(char));
float interval = 0;
wd = (struct weather_data *)malloc(sizeof(struct weather_data));
memset(wd, 0, sizeof(struct weather_data));
argc = sscanf(arg, "%119s %8s %31s %f", wd->uri, locID, wd->data_type, &interval);
if (argc < 3) {
free(locID);
free(wd);
CRIT_ERR(obj, free_at_crash, "wrong number of arguments for $weather");
}
if (process_weather_uri(wd->uri, locID, 0)) {
free(locID);
free(wd);
CRIT_ERR(obj, free_at_crash, \
"could not recognize the weather uri");
}
/* Limit the data retrieval interval to half hour min */
if (interval < 30) {
interval = 30;
}
/* Convert to seconds */
wd->interval = interval * 60;
free(locID);
DBGP("weather: fetching %s from %s every %d seconds", \
wd->data_type, wd->uri, wd->interval);
obj->data.opaque = wd;
}
void print_weather(struct text_object *obj, char *p, int p_max_size)
{
struct weather_data *wd = (struct weather_data *)obj->data.opaque;
if (!wd || !wd->uri) {
NORM_ERR("error processing weather data, check that you have a valid XOAP key if using XOAP.");
return;
}
weather_process_info(p, p_max_size, wd->uri, wd->data_type, wd->interval);
}
void free_weather(struct text_object *obj)
{
free_and_zero(obj->data.opaque);
}
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