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                 "Add new calendar event</A>"
 150                 "</font></TD>\n");
 151
 152         wprintf("<TD><CENTER><H3>");
 153
 154         tm = localtime(&previous_month);
 155         wprintf("<A HREF=\"readfwd?calview=month&year=%d&month=%d&day=1\">",
 156                 (int)(tm->tm_year)+1900, tm->tm_mon + 1);
 157         wprintf("<IMG ALIGN=MIDDLE SRC=\"/static/back.gif\" BORDER=0></A>\n");
 158
 159         wprintf("&nbsp;&nbsp;"
 160                 "<FONT COLOR=#FFFFFF>"
 161                 "%s %d"
 162                 "</FONT>"
 163                 "&nbsp;&nbsp;", months[month-1], year);
 164
 165         tm = localtime(&next_month);
 166         wprintf("<A HREF=\"readfwd?calview=month&year=%d&month=%d&day=1\">",
 167                 (int)(tm->tm_year)+1900, tm->tm_mon + 1);
 168         wprintf("<IMG ALIGN=MIDDLE SRC=\"/static/forward.gif\" BORDER=0></A>\n");
 169
 170         wprintf("</H3></TD><TD align=right><font color=#FFFFFF size=-2>"
 171                 "Click on any date for day view&nbsp;"
 172                 "</FONT></TD></TR></TABLE>\n");
 173
 174         /* Inner table (the real one) */
 175         wprintf("<TABLE width=100%% border=0 cellpadding=1 cellspacing=1 "
 176                 "bgcolor=#4444FF>");
 177         for (i=0; i<7; ++i) {
 178                 wprintf("<TH><FONT COLOR=#FFFFFF>%s</FONT></TH>", days[i]);
 179         }
 180
 181         /* Now do 35 days */
 182         for (i = 0; i < 35; ++i) {
 183                 tm = localtime(&thetime);
 184                 if (tm->tm_wday == 0) {
 185                         wprintf("<TR>");
 186                 }
 187
 188                 wprintf("<TD BGCOLOR=%s WIDTH=14%% HEIGHT=60 VALIGN=TOP><B>",
 189                         ((tm->tm_mon != month-1) ? "DDDDDD" :
 190                         ((tm->tm_wday==0 || tm->tm_wday==6) ? "EEEECC" :
 191                         "FFFFFF"))
 192                 );
 193                 if ((i==0) || (tm->tm_mday == 1)) {
 194                         wprintf("%s ", months[tm->tm_mon]);
 195                 }
 196                 wprintf("<A HREF=\"readfwd?calview=day&year=%d&month=%d&day=%d\">"
 197                         "%d</A></B><BR>",
 198                         tm->tm_year + 1900,
 199                         tm->tm_mon + 1,
 200                         tm->tm_mday,
 201                         tm->tm_mday);
 202
 203                 /* put the data here, stupid */
 204                 calendar_month_view_display_events(thetime);
 205
 206                 wprintf("</TD>");
 207
 208                 if (tm->tm_wday == 6) {
 209                         wprintf("</TR>\n");
 210                 }
 211
 212                 thetime += (time_t)86400;               /* ahead 24 hours */
 213         }
 214
 215         wprintf("</TABLE>"                      /* end of inner table */
 216                 "</TD></TR></TABLE>"            /* end of outer table */
 217                 "</CENTER>\n");
 218 }
 219
 220
 221 void calendar_week_view(int year, int month, int day) {
 222         wprintf("<CENTER><I>week view FIXME</I></CENTER><BR>\n");
 223 }
 224
 225
 226 /*
 227  * Display events for a particular hour of a particular day.
 228  * (Specify hour < 0 to show "all day" events)
 229  */
 230 void calendar_day_view_display_events(int year, int month,
 231                                         int day, int hour) {
 232         int i;
 233         icalproperty *p;
 234         struct icaltimetype t;
 235         int all_day_event = 0;
 236
 237         if (WC->num_cal == 0) {
 238                 wprintf("<BR><BR><BR>\n");
 239                 return;
 240         }
 241
 242         for (i=0; i<(WC->num_cal); ++i) {
 243                 p = icalcomponent_get_first_property(WC->disp_cal[i],
 244                                                 ICAL_DTSTART_PROPERTY);
 245                 if (p != NULL) {
 246                         t = icalproperty_get_dtstart(p);
 247                         if ((t.year == year)
 248                            && (t.month == month)
 249                            && (t.day == day)
 250                            && ( ((t.hour == hour)&&(!t.is_date)) || ((hour<0)&&(t.is_date)) )
 251                            ) {
 252
 253                                 if (t.is_date) all_day_event = 1;
 254
 255                                 p = icalcomponent_get_first_property(
 256                                                         WC->disp_cal[i],
 257                                                         ICAL_SUMMARY_PROPERTY);
 258                                 if (p != NULL) {
 259
 260                                         if (all_day_event) {
 261                                                 wprintf("<TABLE border=1 cellpadding=2><TR>"
 262                                                         "<TD BGCOLOR=#CCCCCC>"
 263                                                 );
 264                                         }
 265
 266                                         wprintf("<FONT SIZE=-1>"
 267                                                 "<A HREF=\"/display_edit_event?msgnum=%ld&calview=day&year=%d&month=%d&day=%d\">",
 268                                                 WC->cal_msgnum[i],
 269                                                 year, month, day
 270                                         );
 271                                         escputs((char *)
 272                                                 icalproperty_get_comment(p));
 273                                         wprintf("</A></FONT><BR>\n");
 274
 275                                         if (all_day_event) {
 276                                                 wprintf("</TD></TR></TABLE>");
 277                                         }
 278                                 }
 279
 280                         }
 281
 282
 283                 }
 284         }
 285 }
 286
 287
 288
 289 void calendar_day_view(int year, int month, int day) {
 290         int hour;
 291         struct icaltimetype today, yesterday, tomorrow;
 292
 293
 294         /* Figure out the dates for "yesterday" and "tomorrow" links */
 295
 296         memset(&today, 0, sizeof(struct icaltimetype));
 297         today.year = year;
 298         today.month = month;
 299         today.day = day;
 300         today.is_date = 1;
 301
 302         memcpy(&yesterday, &today, sizeof(struct icaltimetype));
 303         --yesterday.day;
 304         yesterday = icaltime_normalize(yesterday);
 305
 306         memcpy(&tomorrow, &today, sizeof(struct icaltimetype));
 307         ++tomorrow.day;
 308         tomorrow = icaltime_normalize(tomorrow);
 309
 310
 311         /* Outer table (to get the background color) */
 312         wprintf("<TABLE width=100%% border=0 cellpadding=0 cellspacing=0 "
 313                 "bgcolor=#4444FF><TR><TD>\n");
 314
 315         /* Inner table (the real one) */
 316         wprintf("<TABLE width=100%% border=0 cellpadding=1 cellspacing=1 "
 317                 "bgcolor=#4444FF><TR>\n");
 318
 319         wprintf("<TD WIDTH=50%% VALIGN=top>");  /* begin stuff-on-the-left */
 320
 321         wprintf("<CENTER><H3>");
 322         wprintf("<A HREF=\"readfwd?calview=day&year=%d&month=%d&day=%d\">",
 323                 yesterday.year, yesterday.month, yesterday.day
 324         );
 325         wprintf("<IMG ALIGN=MIDDLE SRC=\"/static/back.gif\" BORDER=0></A>\n");
 326         wprintf("&nbsp;&nbsp;<FONT COLOR=#FFFFFF>"
 327                 "%s %d, %d"
 328                 "</FONT>&nbsp;&nbsp;",
 329                 months[month-1], day, year);
 330         wprintf("<A HREF=\"readfwd?calview=day&year=%d&month=%d&day=%d\">",
 331                 tomorrow.year, tomorrow.month, tomorrow.day
 332         );
 333         wprintf("<IMG ALIGN=MIDDLE SRC=\"/static/forward.gif\" BORDER=0></A>\n");
 334         wprintf("</H3></CENTER>\n");
 335
 336         wprintf("<CENTER><font color=#FFFFFF>"
 337                 "&nbsp;<A HREF=\"/display_edit_event?msgnum=0\">"
 338                 "Add new calendar event</A>"
 339                 "<BR><BR>\n");
 340
 341         wprintf("<A HREF=\"readfwd?calview=month&year=%d&month=%d&day=1\">"
 342                 "Back to month view</A>\n", year, month);
 343
 344         wprintf("</FONT></CENTER>\n");
 345
 346         wprintf("</TD>");                       /* end stuff-on-the-left */
 347
 348         /* Innermost table (contains hours etc.) */
 349         wprintf("<TD WIDTH=50%%>"
 350                 "<TABLE width=100%% border=0 cellpadding=1 cellspacing=1 "
 351                 "bgcolor=#4444FF>\n");
 352
 353         /* Display events before 8:00 (hour=-1 is all-day events) */
 354         wprintf("<TR><TD BGCOLOR=FFFFFF VALIGN=TOP>");
 355         for (hour = (-1); hour <= 7; ++hour) {
 356                 calendar_day_view_display_events(year, month, day, hour);
 357         }
 358         wprintf("</TD></TR>\n");
 359
 360         /* Now the middle of the day... */
 361         for (hour = 8; hour <= 17; ++hour) {    /* could do HEIGHT=xx */
 362                 wprintf("<TR><TD BGCOLOR=FFFFFF VALIGN=TOP>");
 363                 wprintf("%d:00%s ",
 364                         (hour <= 12 ? hour : hour-12),
 365                         (hour < 12 ? "am" : "pm")
 366                 );
 367
 368                 /* put the data here, stupid */
 369                 calendar_day_view_display_events(year, month, day, hour);
 370
 371                 wprintf("</TD></TR>\n");
 372         }
 373
 374         /* Display events after 5:00... */
 375         wprintf("<TR><TD BGCOLOR=FFFFFF VALIGN=TOP>");
 376         for (hour = 18; hour <= 23; ++hour) {
 377                 calendar_day_view_display_events(year, month, day, hour);
 378         }
 379         wprintf("</TD></TR>\n");
 380
 381
 382         wprintf("</TABLE>"                      /* end of innermost table */
 383                 "</TD></TR></TABLE>"            /* end of inner table */
 384                 "</TD></TR></TABLE>"            /* end of outer table */
 385         );
 386
 387
 388
 389 }
 390
 391
 392
 393
 394 void do_calendar_view(void) {
 395         int i;
 396         time_t now;
 397         struct tm *tm;
 398         int year, month, day;
 399         char calview[SIZ];
 400
 401         /* In case no date was specified, go with today */
 402         now = time(NULL);
 403         tm = localtime(&now);
 404         year = tm->tm_year + 1900;
 405         month = tm->tm_mon + 1;
 406         day = tm->tm_mday;
 407
 408         /* Now see if a date was specified */
 409         if (strlen(bstr("year")) > 0) year = atoi(bstr("year"));
 410         if (strlen(bstr("month")) > 0) month = atoi(bstr("month"));
 411         if (strlen(bstr("day")) > 0) day = atoi(bstr("day"));
 412
 413         /* How would you like that cooked? */
 414         if (strlen(bstr("calview")) > 0) {
 415                 strcpy(calview, bstr("calview"));
 416         }
 417         else {
 418                 strcpy(calview, "month");
 419         }
 420
 421         /* Display the selected view */
 422         if (!strcasecmp(calview, "day")) {
 423                 calendar_day_view(year, month, day);
 424         }
 425         else if (!strcasecmp(calview, "week")) {
 426                 calendar_week_view(year, month, day);
 427         }
 428         else {
 429                 calendar_month_view(year, month, day);
 430         }
 431
 432         /* Free the calendar stuff */
 433         if (WC->num_cal) for (i=0; i<(WC->num_cal); ++i) {
 434                 icalcomponent_free(WC->disp_cal[i]);
 435         }
 436         WC->num_cal = 0;
 437         free(WC->disp_cal);
 438         WC->disp_cal = NULL;
 439         free(WC->cal_msgnum);
 440         WC->cal_msgnum = NULL;
 441 }
 442
 443
 444 #endif  /* HAVE_ICAL_H */