git.maemo.org Git - monky/blob - src/weather.c

   1 /* -*- mode: c; c-basic-offset: 4; tab-width: 4; indent-tabs-mode: t -*-
   2  *
   3  * Conky, a system monitor, based on torsmo
   4  *
   5  * Please see COPYING for details
   6  *
   7  * Copyright (c) 2005-2009 Brenden Matthews, Philip Kovacs, et. al.
   8  *      (see AUTHORS)
   9  * All rights reserved.
  10  *
  11  * This program is free software: you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License as published by
  13  * the Free Software Foundation, either version 3 of the License, or
  14  * (at your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  22  *
  23  * vim: ts=4 sw=4 noet ai cindent syntax=c
  24  *
  25  */
  26
  27 #include "conky.h"
  28 #include "logging.h"
  29 #include "weather.h"
  30 #include "temphelper.h"
  31 #include "ccurl_thread.h"
  32 #include <time.h>
  33 #include <ctype.h>
  34 #ifdef MATH
  35 #include <math.h>
  36 #endif /* MATH */
  37 #ifdef XOAP
  38 #include <libxml/parser.h>
  39 #include <libxml/xpath.h>
  40
  41 /* Xpath expressions for XOAP xml parsing */
  42 #define NUM_XPATH_EXPRESSIONS_CC 8
  43 const char *xpath_expression_cc[NUM_XPATH_EXPRESSIONS_CC] = {
  44         "/weather/cc/lsup", "/weather/cc/tmp", "/weather/cc/t",
  45         "/weather/cc/bar/r", "/weather/cc/wind/s", "/weather/cc/wind/d",
  46         "/weather/cc/hmid", "/weather/cc/icon"
  47 };
  48
  49 #define NUM_XPATH_EXPRESSIONS_DF 8
  50 const char *xpath_expression_df[NUM_XPATH_EXPRESSIONS_DF] = {
  51         "/weather/dayf/day[*]/hi", "/weather/dayf/day[*]/low",
  52         "/weather/dayf/day[*]/part[1]/icon", "/weather/dayf/day[*]/part[1]/t",
  53         "/weather/dayf/day[*]/part[1]/wind/s","/weather/dayf/day[*]/part[1]/wind/d",
  54         "/weather/dayf/day[*]/part[1]/ppcp", "/weather/dayf/day[*]/part[1]/hmid"
  55 };
  56 #endif /* XOAP */
  57
  58 /* Possible sky conditions */
  59 #define NUM_CC_CODES 6
  60 const char *CC_CODES[NUM_CC_CODES] = {
  61         "SKC", "CLR", "FEW", "SCT", "BKN", "OVC"
  62 };
  63
  64 /* Possible weather modifiers */
  65 #define NUM_WM_CODES 9
  66 const char *WM_CODES[NUM_WM_CODES] = {
  67         "VC", "MI", "BC", "PR", "TS", "BL",
  68         "SH", "DR", "FZ"
  69 };
  70
  71 /* Possible weather conditions */
  72 #define NUM_WC_CODES 17
  73 const char *WC_CODES[NUM_WC_CODES] = {
  74         "DZ", "RA", "GR", "GS", "SN", "SG",
  75         "FG", "HZ", "FU", "BR", "DU", "SA",
  76         "FC", "PO", "SQ", "SS", "DS"
  77 };
  78
  79 static ccurl_location_t *locations_head_cc = 0;
  80 #ifdef XOAP
  81 static ccurl_location_t *locations_head_df = 0;
  82 #endif
  83
  84 void weather_free_info(void)
  85 {
  86         ccurl_free_locations(&locations_head_cc);
  87 #ifdef XOAP
  88         ccurl_free_locations(&locations_head_df);
  89 #endif
  90 }
  91
  92 int rel_humidity(int dew_point, int air) {
  93         const float a = 17.27f;
  94         const float b = 237.7f;
  95
  96         float diff = a*(dew_point/(b+dew_point)-air/(b+air));
  97 #ifdef MATH
  98         return (int)(100.f*expf(diff));
  99 #else
 100         return (int)(16.666667163372f*(6.f+diff*(6.f+diff*(3.f+diff))));
 101 #endif /* MATH */
 102 }
 103
 104 #ifdef XOAP
 105 static void parse_df(PWEATHER_FORECAST *res, xmlXPathContextPtr xpathCtx)
 106 {
 107         int i, j, k;
 108         char *content;
 109         xmlXPathObjectPtr xpathObj;
 110
 111         for (i = 0; i < NUM_XPATH_EXPRESSIONS_DF; i++) {
 112                 xpathObj = xmlXPathEvalExpression((xmlChar *)xpath_expression_df[i], xpathCtx);
 113                 if (xpathObj != NULL) {
 114                         xmlNodeSetPtr nodes = xpathObj->nodesetval;
 115                         k = 0;
 116                         for (j = 0; j < nodes->nodeNr; ++j) {
 117                                 if (nodes->nodeTab[j]->type == XML_ELEMENT_NODE) {
 118                                         content = (char *)xmlNodeGetContent(nodes->nodeTab[k]);
 119                                         switch(i) {
 120                                         case 0:
 121                                                 res->hi[k] = atoi(content);
 122                                                 break;
 123                                         case 1:
 124                                                 res->low[k] = atoi(content);
 125                                                 break;
 126                                         case 2:
 127                                                 strncpy(res->icon[k], content, 2);
 128                                         case 3:
 129                                                 strncpy(res->xoap_t[k], content, 31);
 130                                                 break;
 131                                         case 4:
 132                                                 res->wind_s[k] = atoi(content);
 133                                                 break;
 134                                         case 5:
 135                                                 res->wind_d[k] = atoi(content);
 136                                                 break;
 137                                         case 6:
 138                                                 res->ppcp[k] = atoi(content);
 139                                                 break;
 140                                         case 7:
 141                                                 res->hmid[k] = atoi(content);
 142                                         }
 143                                         xmlFree(content);
 144                                         if (++k == FORECAST_DAYS) break;
 145                                 }
 146                         }
 147                         xmlXPathFreeObject(xpathObj);
 148                 }
 149         }
 150         return;
 151 }
 152
 153 static void parse_weather_forecast_xml(PWEATHER_FORECAST *res, const char *data)
 154 {
 155         xmlDocPtr doc;
 156         xmlXPathContextPtr xpathCtx;
 157
 158         if (!(doc = xmlReadMemory(data, strlen(data), "", NULL, 0))) {
 159                 NORM_ERR("weather_forecast: can't read xml data");
 160                 return;
 161         }
 162
 163         xpathCtx = xmlXPathNewContext(doc);
 164         if(xpathCtx == NULL) {
 165                 NORM_ERR("weather_forecast: unable to create new XPath context");
 166                 xmlFreeDoc(doc);
 167                 return;
 168         }
 169
 170         parse_df(res, xpathCtx);
 171         xmlXPathFreeContext(xpathCtx);
 172         xmlFreeDoc(doc);
 173         return;
 174 }
 175
 176 static void parse_cc(PWEATHER *res, xmlXPathContextPtr xpathCtx)
 177 {
 178         int i;
 179         char *content;
 180         xmlXPathObjectPtr xpathObj;
 181
 182         for (i = 0; i < NUM_XPATH_EXPRESSIONS_CC; i++) {
 183                 xpathObj = xmlXPathEvalExpression((xmlChar *)xpath_expression_cc[i], xpathCtx);
 184                 if ((xpathObj != NULL) && (xpathObj->nodesetval->nodeTab[0]->type == XML_ELEMENT_NODE)) {
 185                         content = (char *)xmlNodeGetContent(xpathObj->nodesetval->nodeTab[0]);
 186                         switch(i) {
 187                         case 0:
 188                                 strncpy(res->lastupd, content, 31);
 189                                 break;
 190                         case 1:
 191                                 res->temp = atoi(content);
 192                                 break;
 193                         case 2:
 194                                 strncpy(res->xoap_t, content, 31);
 195                                 break;
 196                         case 3:
 197                                 res->bar = atoi(content);
 198                                 break;
 199                         case 4:
 200                                 res->wind_s = atoi(content);
 201                                 break;
 202                         case 5:
 203                                 res->wind_d = atoi(content);
 204                             break;
 205                         case 6:
 206                                 res->hmid = atoi(content);
 207                                 break;
 208                         case 7:
 209                                 strncpy(res->icon, content, 2);
 210                         }
 211                         xmlFree(content);
 212                 }
 213                 xmlXPathFreeObject(xpathObj);
 214         }
 215         return;
 216 }
 217
 218 static void parse_weather_xml(PWEATHER *res, const char *data)
 219 {
 220         xmlDocPtr doc;
 221         xmlXPathContextPtr xpathCtx;
 222
 223         if (!(doc = xmlReadMemory(data, strlen(data), "", NULL, 0))) {
 224                 NORM_ERR("weather: can't read xml data");
 225                 return;
 226         }
 227
 228         xpathCtx = xmlXPathNewContext(doc);
 229         if(xpathCtx == NULL) {
 230                 NORM_ERR("weather: unable to create new XPath context");
 231                 xmlFreeDoc(doc);
 232                 return;
 233         }
 234
 235         parse_cc(res, xpathCtx);
 236         xmlXPathFreeContext(xpathCtx);
 237         xmlFreeDoc(doc);
 238         return;
 239 }
 240 #endif /* XOAP */
 241
 242 /*
 243  * Horrible hack to avoid using regexes
 244  *
 245  */
 246
 247 static inline void parse_token(PWEATHER *res, char *token) {
 248
 249         int i;
 250         char s_tmp[64];
 251
 252         switch (strlen(token)) {
 253
 254                 //Check all tokens 2 chars long
 255                 case 2:
 256
 257                         //Check if token is a weather condition
 258                         for (i=0; i<2; i++) {
 259                                 if (!isalpha(token[i])) break;
 260                         }
 261                         if (i==2) {
 262                                 for(i=0; i<NUM_WC_CODES; i++) {
 263                                         if (!strncmp(token, WC_CODES[i], 2)) {
 264                                                 res->wc=i+1;
 265                                                 break;
 266                                         }
 267                                 }
 268                                 return;
 269                         }
 270
 271                         //Check for CB
 272                         if (!strcmp(token, "CB")) {
 273                                 res->cc = 8;
 274                                 return;
 275                         }
 276
 277                         break;
 278
 279                         //Check all tokens 3 chars long
 280                 case 3:
 281
 282                         //Check if token is a modified weather condition
 283                         if ((token[0] == '+') || (token[0] == '-')) {
 284                                 for (i=1; i<3; i++) {
 285                                         if (!isalpha(token[i])) break;
 286                                 }
 287                                 if (i==3) {
 288                                         for(i=0; i<NUM_WC_CODES; i++) {
 289                                                 if (!strncmp(&token[1], WC_CODES[i], 2)) {
 290                                                         res->wc=i+1;
 291                                                         break;
 292                                                 }
 293                                         }
 294                                         return;
 295                                 }
 296                         }
 297
 298                         //Check for NCD or NSC
 299                         if ((!strcmp(token, "NCD")) || (!strcmp(token, "NSC"))) {
 300                                 res->cc = 1;
 301                                 return;
 302                         }
 303
 304                         //Check for TCU
 305                         if (!strcmp(token, "TCU")) {
 306                                 res->cc = 7;
 307                                 return;
 308                         }
 309
 310                         break;
 311
 312                         //Check all tokens 4 chars long
 313                 case 4:
 314
 315                         //Check if token is a modified weather condition
 316                         for(i=0; i<NUM_WM_CODES; i++) {
 317                                 if (!strncmp(token, WM_CODES[i], 2)) {
 318                                         for(i=0; i<NUM_WC_CODES; i++) {
 319                                                 if (!strncmp(&token[2], WC_CODES[i], 2)) {
 320                                                         res->wc=i+1;
 321                                                         return;
 322                                                 }
 323                                         }
 324                                         break;
 325                                 }
 326                         }
 327
 328                         break;
 329
 330                         //Check all tokens 5 chars long
 331                 case 5:
 332
 333                         //Check for CAVOK
 334                         if (!strcmp(token, "CAVOK")) {
 335                                 res->cc = 1;
 336                                 return;
 337                         }
 338
 339                         //Check if token is the temperature
 340                         for (i=0; i<2; i++) {
 341                                 if (!isdigit(token[i])) break;
 342                         }
 343                         if ((i==2) && (token[2] == '/')) {
 344                                 for (i=3; i<5; i++) {
 345                                         if (!isdigit(token[i])) break;
 346                                 }
 347                                 if (i==5) {
 348                                         //First 2 digits gives the air temperature
 349                                         res->temp=atoi(token);
 350
 351                                         //4th and 5th digits gives the dew point temperature
 352                                         res->dew=atoi(&token[3]);
 353
 354                                         //Compute humidity
 355                                         res->hmid = rel_humidity(res->dew, res->temp);
 356
 357                                         return;
 358                                 }
 359                         }
 360
 361                         //Check if token is the pressure
 362                         if ((token[0] == 'Q') || (token[0] == 'A')) {
 363                                 for (i=1; i<5; i++) {
 364                                         if (!isdigit(token[i])) break;
 365                                 }
 366                                 if (i==5) {
 367                                         if (token[0] == 'A') {
 368                                                 //Convert inches of mercury to mbar
 369                                                 res->bar = (int)(atoi(&token[1])*0.338637526f);
 370                                                 return;
 371                                         }
 372
 373                                         //Last 4 digits is pressure im mbar
 374                                         res->bar = atoi(&token[1]);
 375                                         return;
 376                                 }
 377                         }
 378
 379                         //Check if token is a modified weather condition
 380                         if ((token[0] == '+') || (token[0] == '-')) {
 381                                 for(i=0; i<NUM_WM_CODES; i++) {
 382                                         if (!strncmp(&token[1], WM_CODES[i], 2)) {
 383                                                 for(i=0; i<NUM_WC_CODES; i++) {
 384                                                         if (!strncmp(&token[3], WC_CODES[i], 2)) {
 385                                                                 res->wc=i+1;
 386                                                                 return;
 387                                                         }
 388                                                 }
 389                                                 break;
 390                                         }
 391                                 }
 392                         }
 393                         break;
 394
 395                         //Check all tokens 6 chars long
 396                 case 6:
 397
 398                         //Check if token is the cloud cover
 399                         for (i=0; i<3; i++) {
 400                                 if (!isalpha(token[i])) break;
 401                         }
 402                         if (i==3) {
 403                                 for (i=3; i<6; i++) {
 404                                         if (!isdigit(token[i])) break;
 405                                 }
 406                                 if (i==6) {
 407                                         //Check if first 3 digits gives the cloud cover condition
 408                                         for(i=0; i<NUM_CC_CODES; i++) {
 409                                                 if (!strncmp(token, CC_CODES[i], 3)) {
 410                                                         res->cc=i+1;
 411                                                         break;
 412                                                 }
 413                                         }
 414                                         return;
 415                                 }
 416                         }
 417
 418                         //Check if token is positive temp and negative dew
 419                         for (i=0; i<2; i++) {
 420                                 if (!isdigit(token[i])) break;
 421                         }
 422                         if ((i==2) && (token[2] == '/')  && (token[3] == 'M')) {
 423                                 for (i=4; i<6; i++) {
 424                                         if (!isdigit(token[i])) break;
 425                                 }
 426                                 if (i==6) {
 427                                         //1st and 2nd digits gives the temperature
 428                                         res->temp = atoi(token);
 429
 430                                         //5th and 6th digits gives the dew point temperature
 431                                         res->dew = -atoi(&token[4]);
 432
 433                                         //Compute humidity
 434                                         res->hmid = rel_humidity(res->dew, res->temp);
 435
 436                                         return;
 437                                 }
 438                         }
 439
 440                         break;
 441
 442                         //Check all tokens 7 chars long
 443                 case 7:
 444
 445                         //Check if token is the observation time
 446                         for (i=0; i<6; i++) {
 447                                 if (!isdigit(token[i])) break;
 448                         }
 449                         if ((i==6) && (token[6] == 'Z')) return;
 450
 451                         //Check if token is the wind speed/direction in knots
 452                         for (i=0; i<5; i++) {
 453                                 if (!isdigit(token[i])) break;
 454                         }
 455                         if ((i==5) && (token[5] == 'K') &&  (token[6] == 'T')) {
 456
 457                                 //First 3 digits are wind direction
 458                                 strncpy(s_tmp, token, 3);
 459                                 s_tmp[3]='\0';
 460                                 res->wind_d=atoi(s_tmp);
 461
 462                                 //4th and 5th digit are wind speed in knots (convert to km/hr)
 463                                 res->wind_s = (int)(atoi(&token[3])*1.852);
 464
 465                                 return;
 466                         }
 467
 468                         //Check if token is negative temperature
 469                         if ((token[0] == 'M') && (token[4] == 'M')) {
 470                                 for (i=1; i<3; i++) {
 471                                         if (!isdigit(token[i])) break;
 472                                 }
 473                                 if ((i==3) && (token[3] == '/')) {
 474                                         for (i=5; i<7; i++) {
 475                                                 if (!isdigit(token[i])) break;
 476                                         }
 477                                         if (i==7) {
 478                                                 //2nd and 3rd digits gives the temperature
 479                                                 res->temp = -atoi(&token[1]);
 480
 481                                                 //6th and 7th digits gives the dew point temperature
 482                                                 res->dew = -atoi(&token[5]);
 483
 484                                                 //Compute humidity
 485                                                 res->hmid = rel_humidity(res->dew, res->temp);
 486
 487                                                 return;
 488                                         }
 489                                 }
 490                         }
 491
 492                         //Check if token is wind variability
 493                         for (i=0; i<3; i++) {
 494                                 if (!isdigit(token[i])) break;
 495                         }
 496                         if ((i==3) && (token[3] == 'V')) {
 497                                 for (i=4; i<7; i++) {
 498                                         if (!isdigit(token[i])) break;
 499                                 }
 500                                 if (i==7) return;
 501                         }
 502
 503                         break;
 504
 505                         //Check all tokens 8 chars long
 506                 case 8:
 507
 508                         //Check if token is the wind speed/direction in m/s
 509                         for (i=0; i<5; i++) {
 510                                 if (!isdigit(token[i])) break;
 511                         }
 512                         if ((i==5)&&(token[5] == 'M')&&(token[6] == 'P')&&(token[7] == 'S')) {
 513
 514                                 //First 3 digits are wind direction
 515                                 strncpy(s_tmp, token, 3);
 516                                 s_tmp[3]='\0';
 517                                 res->wind_d=atoi(s_tmp);
 518
 519                                 //4th and 5th digit are wind speed in m/s (convert to km/hr)
 520                                 res->wind_s = (int)(atoi(&token[3])*3.6);
 521
 522                                 return;
 523                         }
 524
 525                 default:
 526
 527                         //printf("token : %s\n", token);
 528                         break;
 529         }
 530 }
 531
 532 #ifdef XOAP
 533 void parse_weather_forecast(void *result, const char *data)
 534 {
 535         PWEATHER_FORECAST *res = (PWEATHER_FORECAST*)result;
 536         /* Reset results */
 537         memset(res, 0, sizeof(PWEATHER_FORECAST));
 538
 539         //Check if it is an xml file
 540         if ( strncmp(data, "<?xml ", 6) == 0 ) {
 541                 parse_weather_forecast_xml(res, data);
 542         }
 543 }
 544 #endif /* XOAP */
 545
 546 void parse_weather(void *result, const char *data)
 547 {
 548         PWEATHER *res = (PWEATHER*)result;
 549         /* Reset results */
 550         memset(res, 0, sizeof(PWEATHER));
 551
 552 #ifdef XOAP
 553         //Check if it is an xml file
 554         if ( strncmp(data, "<?xml ", 6) == 0 ) {
 555                 parse_weather_xml(res, data);
 556         } else
 557 #endif /* XOAP */
 558         {
 559                 //We assume its a text file
 560                 char s_tmp[256];
 561                 const char delim[] = " ";
 562
 563                 //Divide time stamp and metar data
 564                 if (sscanf(data, "%[^'\n']\n%[^'\n']", res->lastupd, s_tmp) == 2) {
 565
 566                         //Process all tokens
 567                         char *p_tok = NULL;
 568                         char *p_save = NULL;
 569
 570                         if ((strtok_r(s_tmp, delim, &p_save)) != NULL) {
 571
 572                                 //Jump first token, must be icao
 573                                 p_tok = strtok_r(NULL, delim, &p_save);
 574
 575                                 do {
 576
 577                                         parse_token(res, p_tok);
 578                                         p_tok = strtok_r(NULL, delim, &p_save);
 579
 580                                 } while (p_tok != NULL);
 581                         }
 582                         return;
 583                 }
 584                 else {
 585                         return;
 586                 }
 587         }
 588 }
 589
 590 void wind_deg_to_dir(char *p, int p_max_size, int wind_deg) {
 591         if ((wind_deg >= 349) || (wind_deg < 12)) {
 592                 strncpy(p, "N", p_max_size);
 593         } else if (wind_deg < 33) {
 594                 strncpy(p, "NNE", p_max_size);
 595         } else if (wind_deg < 57) {
 596                 strncpy(p, "NE", p_max_size);
 597         } else if (wind_deg < 79) {
 598                 strncpy(p, "ENE", p_max_size);
 599         } else if (wind_deg < 102) {
 600                 strncpy(p, "E", p_max_size);
 601         } else if (wind_deg < 124) {
 602                 strncpy(p, "ESE", p_max_size);
 603         } else if (wind_deg < 147) {
 604                 strncpy(p, "SE", p_max_size);
 605         } else if (wind_deg < 169) {
 606                 strncpy(p, "SSE", p_max_size);
 607         } else if (wind_deg < 192) {
 608                 strncpy(p, "S", p_max_size);
 609         } else if (wind_deg < 214) {
 610                 strncpy(p, "SSW", p_max_size);
 611         } else if (wind_deg < 237) {
 612                 strncpy(p, "SW", p_max_size);
 613         } else if (wind_deg < 259) {
 614                 strncpy(p, "WSW", p_max_size);
 615         } else if (wind_deg < 282) {
 616                         strncpy(p, "W", p_max_size);
 617         } else if (wind_deg < 304) {
 618                 strncpy(p, "WNW", p_max_size);
 619         } else if (wind_deg < 327) {
 620                 strncpy(p, "NW", p_max_size);
 621         } else if (wind_deg < 349) {
 622                 strncpy(p, "NNW", p_max_size);
 623         };
 624 }
 625
 626 #ifdef XOAP
 627 void weather_forecast_process_info(char *p, int p_max_size, char *uri, unsigned int day, char *data_type, int interval)
 628 {
 629         PWEATHER_FORECAST *data;
 630
 631         ccurl_location_t *curloc = ccurl_find_location(&locations_head_df, uri);
 632         if (!curloc->p_timed_thread) {
 633                 curloc->result = malloc(sizeof(PWEATHER_FORECAST));
 634                 memset(curloc->result, 0, sizeof(PWEATHER_FORECAST));
 635                 curloc->process_function = &parse_weather_forecast;
 636                 ccurl_init_thread(curloc, interval);
 637                 if (!curloc->p_timed_thread) {
 638                         NORM_ERR("error setting up weather_forecast thread");
 639                 }
 640         }
 641
 642         timed_thread_lock(curloc->p_timed_thread);
 643         data = (PWEATHER_FORECAST*)curloc->result;
 644         if (strcmp(data_type, "hi") == EQUAL) {
 645                 temp_print(p, p_max_size, data->hi[day], TEMP_CELSIUS);
 646         } else if (strcmp(data_type, "low") == EQUAL) {
 647                 temp_print(p, p_max_size, data->low[day], TEMP_CELSIUS);
 648         } else if (strcmp(data_type, "icon") == EQUAL) {
 649                 strncpy(p, data->icon[day], p_max_size);
 650         } else if (strcmp(data_type, "forecast") == EQUAL) {
 651                 strncpy(p, data->xoap_t[day], p_max_size);
 652         } else if (strcmp(data_type, "wind_speed") == EQUAL) {
 653                 snprintf(p, p_max_size, "%d", data->wind_s[day]);
 654         } else if (strcmp(data_type, "wind_dir") == EQUAL) {
 655                 wind_deg_to_dir(p, p_max_size, data->wind_d[day]);
 656         } else if (strcmp(data_type, "wind_dir_DEG") == EQUAL) {
 657                 snprintf(p, p_max_size, "%d", data->wind_d[day]);
 658         } else if (strcmp(data_type, "humidity") == EQUAL) {
 659                 snprintf(p, p_max_size, "%d", data->hmid[day]);
 660         } else if (strcmp(data_type, "precipitation") == EQUAL) {
 661                 snprintf(p, p_max_size, "%d", data->ppcp[day]);
 662         }
 663
 664         timed_thread_unlock(curloc->p_timed_thread);
 665 }
 666 #endif /* XOAP */
 667
 668 void weather_process_info(char *p, int p_max_size, char *uri, char *data_type, int interval)
 669 {
 670         static const char *wc[] = {
 671                 "", "drizzle", "rain", "hail", "soft hail",
 672                 "snow", "snow grains", "fog", "haze", "smoke",
 673                 "mist", "dust", "sand", "funnel cloud tornado",
 674                 "dust/sand", "squall", "sand storm", "dust storm"
 675         };
 676         PWEATHER *data;
 677
 678         ccurl_location_t *curloc = ccurl_find_location(&locations_head_cc, uri);
 679         if (!curloc->p_timed_thread) {
 680                 curloc->result = malloc(sizeof(PWEATHER));
 681                 memset(curloc->result, 0, sizeof(PWEATHER));
 682                 curloc->process_function = &parse_weather;
 683                 ccurl_init_thread(curloc, interval);
 684                 if (!curloc->p_timed_thread) {
 685                         NORM_ERR("error setting up weather thread");
 686                 }
 687         }
 688
 689         timed_thread_lock(curloc->p_timed_thread);
 690         data = (PWEATHER*)curloc->result;
 691         if (strcmp(data_type, "last_update") == EQUAL) {
 692                 strncpy(p, data->lastupd, p_max_size);
 693         } else if (strcmp(data_type, "temperature") == EQUAL) {
 694                 temp_print(p, p_max_size, data->temp, TEMP_CELSIUS);
 695         } else if (strcmp(data_type, "cloud_cover") == EQUAL) {
 696 #ifdef XOAP
 697                 if (data->xoap_t[0] != '\0') {
 698                         strncpy(p, data->xoap_t, p_max_size);
 699                 } else
 700 #endif /* XOAP */
 701                         if (data->cc == 0) {
 702                                 strncpy(p, "", p_max_size);
 703                         } else if (data->cc < 3) {
 704                                 strncpy(p, "clear", p_max_size);
 705                         } else if (data->cc < 5) {
 706                                 strncpy(p, "partly cloudy", p_max_size);
 707                         } else if (data->cc == 5) {
 708                                 strncpy(p, "cloudy", p_max_size);
 709                         } else if (data->cc == 6) {
 710                                 strncpy(p, "overcast", p_max_size);
 711                         } else if (data->cc == 7) {
 712                                 strncpy(p, "towering cumulus", p_max_size);
 713                         } else  {
 714                                 strncpy(p, "cumulonimbus", p_max_size);
 715                         }
 716 #ifdef XOAP
 717         } else if (strcmp(data_type, "icon") == EQUAL) {
 718                 strncpy(p, data->icon, p_max_size);
 719 #endif /* XOAP */
 720         } else if (strcmp(data_type, "pressure") == EQUAL) {
 721                 snprintf(p, p_max_size, "%d", data->bar);
 722         } else if (strcmp(data_type, "wind_speed") == EQUAL) {
 723                 snprintf(p, p_max_size, "%d", data->wind_s);
 724         } else if (strcmp(data_type, "wind_dir") == EQUAL) {
 725                 wind_deg_to_dir(p, p_max_size, data->wind_d);
 726         } else if (strcmp(data_type, "wind_dir_DEG") == EQUAL) {
 727                 snprintf(p, p_max_size, "%d", data->wind_d);
 728
 729         } else if (strcmp(data_type, "humidity") == EQUAL) {
 730                 snprintf(p, p_max_size, "%d", data->hmid);
 731         } else if (strcmp(data_type, "weather") == EQUAL) {
 732                 strncpy(p, wc[data->wc], p_max_size);
 733         }
 734
 735         timed_thread_unlock(curloc->p_timed_thread);
 736 }
 737
 738 #ifdef XOAP
 739
 740 /* xoap suffix for weather from weather.com */
 741 static char *xoap_cc = NULL;
 742 static char *xoap_df = NULL;
 743
 744 /*
 745  * TODO: make the xoap keys file readable from the config file
 746  *       make the keys directly readable from the config file
 747  *       make the xoap keys file giveable as a command line option
 748  */
 749 void load_xoap_keys(void)
 750 {
 751         FILE *fp;
 752         char *par  = (char *) malloc(11 * sizeof(char));
 753         char *key  = (char *) malloc(17 * sizeof(char));
 754         char *xoap = (char *) malloc(64 * sizeof(char));
 755
 756         to_real_path(xoap, XOAP_FILE);
 757         fp = fopen(xoap, "r");
 758         if (fp != NULL) {
 759                 if (fscanf(fp, "%10s %16s", par, key) == 2) {
 760                         xoap_cc = (char *) malloc(128 * sizeof(char));
 761                         xoap_df = (char *) malloc(128 * sizeof(char));
 762
 763                         strcpy(xoap_cc, "?cc=*&link=xoap&prod=xoap&par=");
 764                         strcat(xoap_cc, par);
 765                         strcat(xoap_cc, "&key=");
 766                         strcat(xoap_cc, key);
 767                         strcat(xoap_cc, "&unit=m");
 768
 769                         /* TODO: Use FORECAST_DAYS instead of 5 */
 770                         strcpy(xoap_df, "?dayf=5&link=xoap&prod=xoap&par=");
 771                         strcat(xoap_df, par);
 772                         strcat(xoap_df, "&key=");
 773                         strcat(xoap_df, key);
 774                         strcat(xoap_df, "&unit=m");
 775                 }
 776                 fclose(fp);
 777         }
 778         free(par);
 779         free(key);
 780         free(xoap);
 781 }
 782 #endif /* XOAP */
 783
 784 int process_weather_uri(char *uri, char *locID)
 785 {
 786         /* locID MUST BE upper-case */
 787         char *tmp_p = locID;
 788         while (*tmp_p) {
 789                 *tmp_p = toupper(*tmp_p);
 790                 tmp_p++;
 791         }
 792
 793         /* Construct complete uri */
 794 #ifdef XOAP
 795         if (strstr(uri, "xoap.weather.com")) {
 796                 if ((dayf == 0) && (xoap_cc != NULL)) {
 797                         strcat(uri, locID);
 798                         strcat(uri, xoap_cc);
 799                 } else if ((dayf == 1) && (xoap_df != NULL)) {
 800                         strcat(uri, locID);
 801                         strcat(uri, xoap_df);
 802                 } else {
 803                         free(uri);
 804                         uri = NULL;
 805                 }
 806         } else
 807 #endif /* XOAP */
 808         if (strstr(uri, "weather.noaa.gov")) {
 809                 strcat(uri, locID);
 810                 strcat(uri, ".TXT");
 811         } else  if (!strstr(uri, "localhost") && !strstr(uri, "127.0.0.1")) {
 812                 return -1;
 813         }
 814         return 0;
 815 }