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