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 void calendar_month_view_display_events(time_t thetime) {
  40         int i;
  41         struct tm *tm;
  42         icalproperty *p;
  43         struct icaltimetype t;
  44         int month, day, year;
  45         int all_day_event = 0;
  46
  47         if (WC->num_cal == 0) {
  48                 wprintf("<BR><BR><BR>\n");
  49                 return;
  50         }
  51
  52         tm = localtime(&thetime);
  53         month = tm->tm_mon + 1;
  54         day = tm->tm_mday;
  55         year = tm->tm_year + 1900;
  56
  57         for (i=0; i<(WC->num_cal); ++i) {
  58                 p = icalcomponent_get_first_property(WC->disp_cal[i],
  59                                                 ICAL_DTSTART_PROPERTY);
  60                 if (p != NULL) {
  61                         t = icalproperty_get_dtstart(p);
  62                         if ((t.year == year)
  63                            && (t.month == month)
  64                            && (t.day == day)) {
  65
  66                                 if (t.is_date) all_day_event = 1;
  67
  68                                 p = icalcomponent_get_first_property(
  69                                                         WC->disp_cal[i],
  70                                                         ICAL_SUMMARY_PROPERTY);
  71                                 if (p != NULL) {
  72
  73                                         if (all_day_event) {
  74                                                 wprintf("<TABLE border=1 cellpadding=2><TR>"
  75                                                         "<TD BGCOLOR=#CCCCCC>"
  76                                                 );
  77                                         }
  78
  79                                         wprintf("<FONT SIZE=-1>"
  80                                                 "<A HREF=\"/display_edit_event?msgnum=%ld&calview=%s&year=%s&month=%s&day=%s\">",
  81                                                 WC->cal_msgnum[i],
  82                                                 bstr("calview"),
  83                                                 bstr("year"),
  84                                                 bstr("month"),
  85                                                 bstr("day")
  86                                         );
  87                                         escputs((char *)
  88                                                 icalproperty_get_comment(p));
  89                                         wprintf("</A></FONT><BR>\n");
  90
  91                                         if (all_day_event) {
  92                                                 wprintf("</TD></TR></TABLE>");
  93                                         }
  94
  95                                 }
  96
  97                         }
  98
  99
 100                 }
 101         }
 102 }
 103
 104
 105
 106 void calendar_month_view(int year, int month, int day) {
 107         struct tm starting_tm;
 108         struct tm *tm;
 109         time_t thetime;
 110         int i;
 111         time_t previous_month;
 112         time_t next_month;
 113
 114         /* Determine what day to start.
 115          * First, back up to the 1st of the month...
 116          */
 117         memset(&starting_tm, 0, sizeof(struct tm));
 118         starting_tm.tm_year = year - 1900;
 119         starting_tm.tm_mon = month - 1;
 120         starting_tm.tm_mday = day;
 121         thetime = mktime(&starting_tm);
 122
 123         tm = &starting_tm;
 124         while (tm->tm_mday != 1) {
 125                 thetime = thetime - (time_t)86400;      /* go back 24 hours */
 126                 tm = localtime(&thetime);
 127         }
 128
 129         /* Determine previous and next months ... for links */
 130         previous_month = thetime - (time_t)864000L;     /* back 10 days */
 131         next_month = thetime + (time_t)(31L * 86400L);  /* ahead 31 days */
 132         lprintf(9, "previous month is %s", asctime(localtime(&previous_month)));
 133         lprintf(9, "next month is %s", asctime(localtime(&next_month)));
 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=FFFFFF WIDTH=14%% HEIGHT=60 VALIGN=TOP>"
 189                         "<B>");
 190                 if ((i==0) || (tm->tm_mday == 1)) {
 191                         wprintf("%s ", months[tm->tm_mon]);
 192                 }
 193                 wprintf("<A HREF=\"readfwd?calview=day&year=%d&month=%d&day=%d\">"
 194                         "%d</A></B><BR>",
 195                         tm->tm_year + 1900,
 196                         tm->tm_mon + 1,
 197                         tm->tm_mday,
 198                         tm->tm_mday);
 199
 200                 /* put the data here, stupid */
 201                 calendar_month_view_display_events(thetime);
 202
 203                 wprintf("</TD>");
 204
 205                 if (tm->tm_wday == 6) {
 206                         wprintf("</TR>\n");
 207                 }
 208
 209                 thetime += (time_t)86400;               /* ahead 24 hours */
 210         }
 211
 212         wprintf("</TABLE>"                      /* end of inner table */
 213                 "</TD></TR></TABLE>"            /* end of outer table */
 214                 "</CENTER>\n");
 215 }
 216
 217
 218 void calendar_week_view(int year, int month, int day) {
 219         wprintf("<CENTER><I>week view FIXME</I></CENTER><BR>\n");
 220 }
 221
 222
 223 /*
 224  * Display events for a particular hour of a particular day.
 225  * (Specify hour < 0 to show "all day" events)
 226  */
 227 void calendar_day_view_display_events(int year, int month,
 228                                         int day, int hour) {
 229         int i;
 230         icalproperty *p;
 231         struct icaltimetype t;
 232         int all_day_event = 0;
 233
 234         if (WC->num_cal == 0) {
 235                 wprintf("<BR><BR><BR>\n");
 236                 return;
 237         }
 238
 239         for (i=0; i<(WC->num_cal); ++i) {
 240                 p = icalcomponent_get_first_property(WC->disp_cal[i],
 241                                                 ICAL_DTSTART_PROPERTY);
 242                 if (p != NULL) {
 243                         t = icalproperty_get_dtstart(p);
 244                         if ((t.year == year)
 245                            && (t.month == month)
 246                            && (t.day == day)
 247                            && ( ((t.hour == hour)&&(!t.is_date)) || ((hour<0)&&(t.is_date)) )
 248                            ) {
 249
 250                                 if (t.is_date) all_day_event = 1;
 251
 252                                 p = icalcomponent_get_first_property(
 253                                                         WC->disp_cal[i],
 254                                                         ICAL_SUMMARY_PROPERTY);
 255                                 if (p != NULL) {
 256
 257                                         if (all_day_event) {
 258                                                 wprintf("<TABLE border=1 cellpadding=2><TR>"
 259                                                         "<TD BGCOLOR=#CCCCCC>"
 260                                                 );
 261                                         }
 262
 263                                         wprintf("<FONT SIZE=-1>"
 264                                                 "<A HREF=\"/display_edit_event?msgnum=%ld&calview=day&year=%d&month=%d&day=%d\">",
 265                                                 WC->cal_msgnum[i],
 266                                                 year, month, day
 267                                         );
 268                                         escputs((char *)
 269                                                 icalproperty_get_comment(p));
 270                                         wprintf("</A></FONT><BR>\n");
 271
 272                                         if (all_day_event) {
 273                                                 wprintf("</TD></TR></TABLE>");
 274                                         }
 275                                 }
 276
 277                         }
 278
 279
 280                 }
 281         }
 282 }
 283
 284
 285
 286 void calendar_day_view(int year, int month, int day) {
 287         int hour;
 288
 289         /* Outer table (to get the background color) */
 290         wprintf("<TABLE width=100%% border=0 cellpadding=0 cellspacing=0 "
 291                 "bgcolor=#4444FF><TR><TD>\n");
 292
 293         /* Inner table (the real one) */
 294         wprintf("<TABLE width=100%% border=0 cellpadding=1 cellspacing=1 "
 295                 "bgcolor=#4444FF><TR>\n");
 296
 297         wprintf("<TD WIDTH=50%% VALIGN=top>");  /* begin stuff-on-the-left */
 298
 299         wprintf("<CENTER><H3><FONT COLOR=#FFFFFF>"
 300                 "%s %d, %d"
 301                 "</FONT></H3></CENTER>\n",
 302                 months[month-1], day, year);
 303
 304         wprintf("<CENTER><font color=#FFFFFF>"
 305                 "&nbsp;<A HREF=\"/display_edit_event?msgnum=0\">"
 306                 "Add new calendar event</A>"
 307                 "<BR><BR>\n");
 308
 309         wprintf("<A HREF=\"readfwd?calview=month&year=%d&month=%d&day=1\">"
 310                 "Back to month view</A>\n", year, month);
 311
 312         wprintf("</FONT></CENTER>\n");
 313
 314         wprintf("</TD>");                       /* end stuff-on-the-left */
 315
 316         /* Innermost table (contains hours etc.) */
 317         wprintf("<TD WIDTH=50%%>"
 318                 "<TABLE width=100%% border=0 cellpadding=1 cellspacing=1 "
 319                 "bgcolor=#4444FF>\n");
 320
 321         /* Display events before 8:00 (hour=-1 is all-day events) */
 322         wprintf("<TR><TD BGCOLOR=FFFFFF VALIGN=TOP>");
 323         for (hour = (-1); hour <= 7; ++hour) {
 324                 calendar_day_view_display_events(year, month, day, hour);
 325         }
 326         wprintf("</TD></TR>\n");
 327
 328         /* Now the middle of the day... */
 329         for (hour = 8; hour <= 17; ++hour) {    /* could do HEIGHT=xx */
 330                 wprintf("<TR><TD BGCOLOR=FFFFFF VALIGN=TOP>");
 331                 wprintf("%d:00%s ",
 332                         (hour <= 12 ? hour : hour-12),
 333                         (hour < 12 ? "am" : "pm")
 334                 );
 335
 336                 /* put the data here, stupid */
 337                 calendar_day_view_display_events(year, month, day, hour);
 338
 339                 wprintf("</TD></TR>\n");
 340         }
 341
 342         /* Display events after 5:00... */
 343         wprintf("<TR><TD BGCOLOR=FFFFFF VALIGN=TOP>");
 344         for (hour = 18; hour <= 23; ++hour) {
 345                 calendar_day_view_display_events(year, month, day, hour);
 346         }
 347         wprintf("</TD></TR>\n");
 348
 349
 350         wprintf("</TABLE>"                      /* end of innermost table */
 351                 "</TD></TR></TABLE>"            /* end of inner table */
 352                 "</TD></TR></TABLE>"            /* end of outer table */
 353         );
 354
 355
 356
 357 }
 358
 359
 360
 361
 362 void do_calendar_view(void) {
 363         int i;
 364         time_t now;
 365         struct tm *tm;
 366         int year, month, day;
 367         char calview[SIZ];
 368
 369         /* In case no date was specified, go with today */
 370         now = time(NULL);
 371         tm = localtime(&now);
 372         year = tm->tm_year + 1900;
 373         month = tm->tm_mon + 1;
 374         day = tm->tm_mday;
 375
 376         /* Now see if a date was specified */
 377         if (strlen(bstr("year")) > 0) year = atoi(bstr("year"));
 378         if (strlen(bstr("month")) > 0) month = atoi(bstr("month"));
 379         if (strlen(bstr("day")) > 0) day = atoi(bstr("day"));
 380
 381         /* How would you like that cooked? */
 382         if (strlen(bstr("calview")) > 0) {
 383                 strcpy(calview, bstr("calview"));
 384         }
 385         else {
 386                 strcpy(calview, "month");
 387         }
 388
 389         /* Display the selected view */
 390         if (!strcasecmp(calview, "day")) {
 391                 calendar_day_view(year, month, day);
 392         }
 393         else if (!strcasecmp(calview, "week")) {
 394                 calendar_week_view(year, month, day);
 395         }
 396         else {
 397                 calendar_month_view(year, month, day);
 398         }
 399
 400         /* Free the calendar stuff */
 401         if (WC->num_cal) for (i=0; i<(WC->num_cal); ++i) {
 402                 icalcomponent_free(WC->disp_cal[i]);
 403         }
 404         WC->num_cal = 0;
 405         free(WC->disp_cal);
 406         WC->disp_cal = NULL;
 407         free(WC->cal_msgnum);
 408         WC->cal_msgnum = NULL;
 409 }
 410
 411
 412 #endif  /* HAVE_ICAL_H */