webcit/calendar_view.c

   1 /*
   2  * $Id$
   3  *
   4  *
   5  */
   6
   7 #include <ctype.h>
   8 #include <stdlib.h>
   9 #include <unistd.h>
  10 #include <stdio.h>
  11 #include <fcntl.h>
  12 #include <signal.h>
  13 #include <sys/types.h>
  14 #include <sys/wait.h>
  15 #include <sys/socket.h>
  16 #include <limits.h>
  17 #include <netinet/in.h>
  18 #include <netdb.h>
  19 #include <string.h>
  20 #include <pwd.h>
  21 #include <errno.h>
  22 #include <stdarg.h>
  23 #include <pthread.h>
  24 #include <signal.h>
  25 #include <time.h>
  26 #include "webcit.h"
  27 #include "webserver.h"
  28
  29 #ifndef HAVE_ICAL_H
  30
  31 void do_calendar_view(void) {   /* stub for non-libical builds */
  32         wprintf("<CENTER><I>Calendar view not available</I></CENTER><BR>\n");
  33 }
  34
  35 #else   /* HAVE_ICAL_H */
  36
  37 /****************************************************************************/
  38
  39 #include "ical.h"
  40
  41 void calendar_month_view_display_events(time_t thetime) {
  42         int i;
  43         time_t event_tt;
  44         struct tm event_tm;
  45         struct tm today_tm;
  46         icalproperty *p;
  47         struct icaltimetype t;
  48         int month, day, year;
  49         int all_day_event = 0;
  50
  51         if (WC->num_cal == 0) {
  52                 wprintf("<BR><BR><BR>\n");
  53                 return;
  54         }
  55
  56         memcpy(&today_tm, localtime(&thetime), sizeof(struct tm));
  57         month = today_tm.tm_mon + 1;
  58         day = today_tm.tm_mday;
  59         year = today_tm.tm_year + 1900;
  60
  61         for (i=0; i<(WC->num_cal); ++i) {
  62                 p = icalcomponent_get_first_property(WC->disp_cal[i],
  63                                                 ICAL_DTSTART_PROPERTY);
  64                 if (p != NULL) {
  65                         t = icalproperty_get_dtstart(p);
  66                         event_tt = icaltime_as_timet(t);
  67                         memcpy(&event_tm, localtime(&event_tt), sizeof(struct tm));
  68                         if ((event_tm.tm_year == today_tm.tm_year)
  69                            && (event_tm.tm_mon == today_tm.tm_mon)
  70                            && (event_tm.tm_mday == today_tm.tm_mday)) {
  71
  72                                 if (t.is_date) all_day_event = 1;
  73                                 else all_day_event = 0;
  74
  75                                 p = icalcomponent_get_first_property(
  76                                                         WC->disp_cal[i],
  77                                                         ICAL_SUMMARY_PROPERTY);
  78                                 if (p != NULL) {
  79
  80                                         if (all_day_event) {
  81                                                 wprintf("<TABLE border=0 cellpadding=2><TR>"
  82                                                         "<TD BGCOLOR=#CCCCDD>"
  83                                                 );
  84                                         }
  85
  86                                         wprintf("<FONT SIZE=-1>"
  87                                                 "<A HREF=\"/display_edit_event?msgnum=%ld&calview=%s&year=%s&month=%s&day=%s\">",
  88                                                 WC->cal_msgnum[i],
  89                                                 bstr("calview"),
  90                                                 bstr("year"),
  91                                                 bstr("month"),
  92                                                 bstr("day")
  93                                         );
  94                                         escputs((char *)
  95                                                 icalproperty_get_comment(p));
  96                                         wprintf("</A></FONT><BR>\n");
  97
  98                                         if (all_day_event) {
  99                                                 wprintf("</TD></TR></TABLE>");
 100                                         }
 101
 102                                 }
 103
 104                         }
 105
 106
 107                 }
 108         }
 109 }
 110
 111
 112
 113 void calendar_month_view(int year, int month, int day) {
 114         struct tm starting_tm;
 115         struct tm *tm;
 116         time_t thetime;
 117         int i;
 118         time_t previous_month;
 119         time_t next_month;
 120
 121         /* Determine what day to start.
 122          * First, back up to the 1st of the month...
 123          */
 124         memset(&starting_tm, 0, sizeof(struct tm));
 125         starting_tm.tm_year = year - 1900;
 126         starting_tm.tm_mon = month - 1;
 127         starting_tm.tm_mday = day;
 128         thetime = mktime(&starting_tm);
 129
 130         tm = &starting_tm;
 131         while (tm->tm_mday != 1) {
 132                 thetime = thetime - (time_t)86400;      /* go back 24 hours */
 133                 tm = localtime(&thetime);
 134         }
 135
 136         /* Determine previous and next months ... for links */
 137         previous_month = thetime - (time_t)864000L;     /* back 10 days */
 138         next_month = thetime + (time_t)(31L * 86400L);  /* ahead 31 days */
 139
 140         /* Now back up until we're on a Sunday */
 141         tm = localtime(&thetime);
 142         while (tm->tm_wday != 0) {
 143                 thetime = thetime - (time_t)86400;      /* go back 24 hours */
 144                 tm = localtime(&thetime);
 145         }
 146
 147         /* Outer table (to get the background color) */
 148         wprintf("<TABLE width=100%% border=0 cellpadding=0 cellspacing=0 "
 149                 "bgcolor=#4444FF><TR><TD>\n");
 150
 151         wprintf("<TABLE width=100%% border=0 cellpadding=0 cellspacing=0>"
 152                 "<TR><TD align=left><font color=#FFFFFF>"
 153                 "&nbsp;<A HREF=\"/display_edit_event?msgnum=0"
 154                 "&year=%d&month=%d&day=%d\">"
 155                 "Add new calendar event</A>"
 156                 "</font></TD>\n",
 157                 year, month, day
 158         );
 159
 160         wprintf("<TD><CENTER><H3>");
 161
 162         tm = localtime(&previous_month);
 163         wprintf("<A HREF=\"readfwd?calview=month&year=%d&month=%d&day=1\">",
 164                 (int)(tm->tm_year)+1900, tm->tm_mon + 1);
 165         wprintf("<IMG ALIGN=MIDDLE SRC=\"/static/back.gif\" BORDER=0></A>\n");
 166
 167         wprintf("&nbsp;&nbsp;"
 168                 "<FONT COLOR=#FFFFFF>"
 169                 "%s %d"
 170                 "</FONT>"
 171                 "&nbsp;&nbsp;", months[month-1], year);
 172
 173         tm = localtime(&next_month);
 174         wprintf("<A HREF=\"readfwd?calview=month&year=%d&month=%d&day=1\">",
 175                 (int)(tm->tm_year)+1900, tm->tm_mon + 1);
 176         wprintf("<IMG ALIGN=MIDDLE SRC=\"/static/forward.gif\" BORDER=0></A>\n");
 177
 178         wprintf("</H3></TD><TD align=right><font color=#FFFFFF size=-2>"
 179                 "Click on any date for day view&nbsp;"
 180                 "</FONT></TD></TR></TABLE>\n");
 181
 182         /* Inner table (the real one) */
 183         wprintf("<TABLE width=100%% border=0 cellpadding=1 cellspacing=1 "
 184                 "bgcolor=#4444FF>");
 185         for (i=0; i<7; ++i) {
 186                 wprintf("<TH><FONT COLOR=#FFFFFF>%s</FONT></TH>", days[i]);
 187         }
 188
 189         /* Now do 35 days */
 190         for (i = 0; i < 35; ++i) {
 191                 tm = localtime(&thetime);
 192                 if (tm->tm_wday == 0) {
 193                         wprintf("<TR>");
 194                 }
 195
 196                 wprintf("<TD BGCOLOR=%s WIDTH=14%% HEIGHT=60 VALIGN=TOP><B>",
 197                         ((tm->tm_mon != month-1) ? "DDDDDD" :
 198                         ((tm->tm_wday==0 || tm->tm_wday==6) ? "EEEECC" :
 199                         "FFFFFF"))
 200                 );
 201                 if ((i==0) || (tm->tm_mday == 1)) {
 202                         wprintf("%s ", months[tm->tm_mon]);
 203                 }
 204                 wprintf("<A HREF=\"readfwd?calview=day&year=%d&month=%d&day=%d\">"
 205                         "%d</A></B><BR>",
 206                         tm->tm_year + 1900,
 207                         tm->tm_mon + 1,
 208                         tm->tm_mday,
 209                         tm->tm_mday);
 210
 211                 /* put the data here, stupid */
 212                 calendar_month_view_display_events(thetime);
 213
 214                 wprintf("</TD>");
 215
 216                 if (tm->tm_wday == 6) {
 217                         wprintf("</TR>\n");
 218                 }
 219
 220                 thetime += (time_t)86400;               /* ahead 24 hours */
 221         }
 222
 223         wprintf("</TABLE>"                      /* end of inner table */
 224                 "</TD></TR></TABLE>"            /* end of outer table */
 225                 "</CENTER>\n");
 226 }
 227
 228
 229 void calendar_week_view(int year, int month, int day) {
 230         wprintf("<CENTER><I>week view FIXME</I></CENTER><BR>\n");
 231 }
 232
 233
 234 /*
 235  * Display events for a particular hour of a particular day.
 236  * (Specify hour < 0 to show "all day" events)
 237  */
 238 void calendar_day_view_display_events(int year, int month,
 239                                         int day, int hour) {
 240         int i;
 241         icalproperty *p;
 242         struct icaltimetype t;
 243         time_t event_tt;
 244         struct tm *event_tm;
 245         int all_day_event = 0;
 246
 247         if (WC->num_cal == 0) {
 248                 wprintf("<BR><BR><BR>\n");
 249                 return;
 250         }
 251
 252         for (i=0; i<(WC->num_cal); ++i) {
 253                 p = icalcomponent_get_first_property(WC->disp_cal[i],
 254                                                 ICAL_DTSTART_PROPERTY);
 255                 if (p != NULL) {
 256                         t = icalproperty_get_dtstart(p);
 257                         event_tt = icaltime_as_timet(t);
 258                         event_tm = localtime(&event_tt);
 259                         if ((event_tm->tm_year == (year-1900))
 260                            && (event_tm->tm_mon == (month-1))
 261                            && (event_tm->tm_mday == day)
 262                            && ( ((event_tm->tm_hour == hour)&&(!t.is_date)) || ((hour<0)&&(t.is_date)) )
 263                            ) {
 264
 265                                 if (t.is_date) all_day_event = 1;
 266
 267                                 p = icalcomponent_get_first_property(
 268                                                         WC->disp_cal[i],
 269                                                         ICAL_SUMMARY_PROPERTY);
 270                                 if (p != NULL) {
 271
 272                                         if (all_day_event) {
 273                                                 wprintf("<TABLE border=1 cellpadding=2><TR>"
 274                                                         "<TD BGCOLOR=#CCCCCC>"
 275                                                 );
 276                                         }
 277
 278                                         wprintf("<FONT SIZE=-1>"
 279                                                 "<A HREF=\"/display_edit_event?msgnum=%ld&calview=day&year=%d&month=%d&day=%d\">",
 280                                                 WC->cal_msgnum[i],
 281                                                 year, month, day
 282                                         );
 283                                         escputs((char *)
 284                                                 icalproperty_get_comment(p));
 285                                         wprintf("</A></FONT><BR>\n");
 286
 287                                         if (all_day_event) {
 288                                                 wprintf("</TD></TR></TABLE>");
 289                                         }
 290                                 }
 291
 292                         }
 293
 294
 295                 }
 296         }
 297 }
 298
 299
 300
 301 void calendar_day_view(int year, int month, int day) {
 302         int hour;
 303         struct icaltimetype today, yesterday, tomorrow;
 304
 305
 306         /* Figure out the dates for "yesterday" and "tomorrow" links */
 307
 308         memset(&today, 0, sizeof(struct icaltimetype));
 309         today.year = year;
 310         today.month = month;
 311         today.day = day;
 312         today.is_date = 1;
 313
 314         memcpy(&yesterday, &today, sizeof(struct icaltimetype));
 315         --yesterday.day;
 316         yesterday = icaltime_normalize(yesterday);
 317
 318         memcpy(&tomorrow, &today, sizeof(struct icaltimetype));
 319         ++tomorrow.day;
 320         tomorrow = icaltime_normalize(tomorrow);
 321
 322
 323         /* Outer table (to get the background color) */
 324         wprintf("<TABLE width=100%% border=0 cellpadding=0 cellspacing=0 "
 325                 "bgcolor=#4444FF><TR><TD>\n");
 326
 327         /* Inner table (the real one) */
 328         wprintf("<TABLE width=100%% border=0 cellpadding=1 cellspacing=1 "
 329                 "bgcolor=#4444FF><TR>\n");
 330
 331         /* Innermost table (contains hours etc.) */
 332         wprintf("<TD WIDTH=80%%>"
 333                 "<TABLE width=100%% border=0 cellpadding=1 cellspacing=1 "
 334                 "bgcolor=#4444FF>\n");
 335
 336         /* Display events before 8:00 (hour=-1 is all-day events) */
 337         wprintf("<TR>"
 338                 "<TD BGCOLOR=CCCCDD VALIGN=MIDDLE WIDTH=10%%></TD>"
 339                 "<TD BGCOLOR=FFFFFF VALIGN=TOP>");
 340         for (hour = (-1); hour <= 7; ++hour) {
 341                 calendar_day_view_display_events(year, month, day, hour);
 342         }
 343         wprintf("</TD></TR>\n");
 344
 345         /* Now the middle of the day... */
 346         for (hour = 8; hour <= 17; ++hour) {    /* could do HEIGHT=xx */
 347                 wprintf("<TR HEIGHT=30><TD BGCOLOR=CCCCDD ALIGN=MIDDLE "
 348                         "VALIGN=MIDDLE WIDTH=10%%>");
 349                 wprintf("<A HREF=\"/display_edit_event?msgnum=0"
 350                         "&year=%d&month=%d&day=%d&hour=%d&minute=0\">",
 351                         year, month, day, hour
 352                 );
 353                 wprintf("%d:00%s</A> ",
 354                         (hour <= 12 ? hour : hour-12),
 355                         (hour < 12 ? "am" : "pm")
 356                 );
 357                 wprintf("</TD><TD BGCOLOR=FFFFFF VALIGN=TOP>");
 358
 359                 /* put the data here, stupid */
 360                 calendar_day_view_display_events(year, month, day, hour);
 361
 362                 wprintf("</TD></TR>\n");
 363         }
 364
 365         /* Display events after 5:00... */
 366         wprintf("<TR>"
 367                 "<TD BGCOLOR=CCCCDD VALIGN=MIDDLE WIDTH=10%%></TD>"
 368                 "<TD BGCOLOR=FFFFFF VALIGN=TOP>");
 369         for (hour = 18; hour <= 23; ++hour) {
 370                 calendar_day_view_display_events(year, month, day, hour);
 371         }
 372         wprintf("</TD></TR>\n");
 373
 374
 375         wprintf("</TABLE>"                      /* end of innermost table */
 376                 "</TD>"
 377         );
 378
 379         wprintf("<TD WIDTH=20%% VALIGN=top>");  /* begin stuff-on-the-right */
 380
 381
 382         /* Begin todays-date-with-left-and-right-arrows */
 383         wprintf("<CENTER><TABLE BORDER=0 CELLSPACING=0 CELLPADDING=1><TR>\n");
 384
 385         wprintf("<TD>"
 386                 "<A HREF=\"readfwd?calview=day&year=%d&month=%d&day=%d\">",
 387                 yesterday.year, yesterday.month, yesterday.day
 388         );
 389         wprintf("<IMG ALIGN=MIDDLE SRC=\"/static/back.gif\" BORDER=0></A>"
 390                 "</TD>\n");
 391
 392         wprintf("<TD ALIGN=MIDDLE><FONT COLOR=#FFFFFF>"
 393                 "<H2>%s</H2><H1>%d</H1><H3>%d</H3>"
 394                 "</FONT></TD>",
 395                 months[month-1], day, year);
 396
 397         wprintf("<TD>"
 398                 "<A HREF=\"readfwd?calview=day&year=%d&month=%d&day=%d\">",
 399                 tomorrow.year, tomorrow.month, tomorrow.day
 400         );
 401         wprintf("<IMG ALIGN=MIDDLE SRC=\"/static/forward.gif\""
 402                 " BORDER=0></A></TD>\n");
 403
 404         wprintf("</TR></TABLE></CENTER>\n");
 405         /* End todays-date-with-left-and-right-arrows */
 406
 407         wprintf("<CENTER><font color=#FFFFFF>"
 408                 "&nbsp;<A HREF=\"/display_edit_event?msgnum=0"
 409                 "&year=%d&month=%d&day=%d\">"
 410                 "Add new calendar event</A>"
 411                 "<BR><BR>\n",
 412                 year, month, day
 413         );
 414
 415         wprintf("<A HREF=\"readfwd?calview=month&year=%d&month=%d&day=1\">"
 416                 "Back to month view</A>\n", year, month);
 417
 418         wprintf("</FONT></CENTER>\n");
 419
 420         wprintf("</TD>");                       /* end stuff-on-the-right */
 421
 422
 423
 424         wprintf("</TR></TABLE>"                 /* end of inner table */
 425                 "</TD></TR></TABLE>"            /* end of outer table */
 426         );
 427
 428
 429
 430 }
 431
 432
 433
 434
 435 void do_calendar_view(void) {
 436         int i;
 437         time_t now;
 438         struct tm *tm;
 439         int year, month, day;
 440         char calview[SIZ];
 441
 442         /* In case no date was specified, go with today */
 443         now = time(NULL);
 444         tm = localtime(&now);
 445         year = tm->tm_year + 1900;
 446         month = tm->tm_mon + 1;
 447         day = tm->tm_mday;
 448
 449         /* Now see if a date was specified */
 450         if (strlen(bstr("year")) > 0) year = atoi(bstr("year"));
 451         if (strlen(bstr("month")) > 0) month = atoi(bstr("month"));
 452         if (strlen(bstr("day")) > 0) day = atoi(bstr("day"));
 453
 454         /* How would you like that cooked? */
 455         if (strlen(bstr("calview")) > 0) {
 456                 strcpy(calview, bstr("calview"));
 457         }
 458         else {
 459                 strcpy(calview, "month");
 460         }
 461
 462         /* Display the selected view */
 463         if (!strcasecmp(calview, "day")) {
 464                 calendar_day_view(year, month, day);
 465         }
 466         else if (!strcasecmp(calview, "week")) {
 467                 calendar_week_view(year, month, day);
 468         }
 469         else {
 470                 calendar_month_view(year, month, day);
 471         }
 472
 473         /* Free the calendar stuff */
 474         if (WC->num_cal) for (i=0; i<(WC->num_cal); ++i) {
 475                 icalcomponent_free(WC->disp_cal[i]);
 476         }
 477         WC->num_cal = 0;
 478         free(WC->disp_cal);
 479         WC->disp_cal = NULL;
 480         free(WC->cal_msgnum);
 481         WC->cal_msgnum = NULL;
 482 }
 483
 484
 485 #endif  /* HAVE_ICAL_H */