webcit/calendar_tools.c

   1 /*
   2  * $Id$
   3  *
   4  * Miscellaneous functions which handle calendar components.
   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 char *months[] = {
  30         "January", "February", "March", "April", "May", "June", "July",
  31         "August", "September", "October", "November", "December"
  32 };
  33
  34 char *days[] = {
  35         "Sunday", "Monday", "Tuesday", "Wednesday",
  36         "Thursday", "Friday", "Saturday"
  37 };
  38
  39 char *hourname[] = {
  40         "12am", "1am", "2am", "3am", "4am", "5am", "6am",
  41         "7am", "8am", "9am", "10am", "11am", "12pm",
  42         "1pm", "2pm", "3pm", "4pm", "5pm", "6pm",
  43         "7pm", "8pm", "9pm", "10pm", "11pm"
  44 };
  45
  46 #ifdef WEBCIT_WITH_CALENDAR_SERVICE
  47
  48 /*
  49  * The display_icaltimetype_as_webform() and icaltime_from_webform() functions
  50  * handle the display and editing of date/time properties in web pages.  The
  51  * first one converts an icaltimetype into valid HTML markup -- a series of form
  52  * fields for editing the date and time.  When the user submits the form, the
  53  * results can be fed back into the second function, which turns it back into
  54  * an icaltimetype.  The "prefix" string required by both functions is prepended
  55  * to all field names.  This allows a form to contain more than one date/time
  56  * property (for example, a start and end time) by ensuring the field names are
  57  * unique within the form.
  58  *
  59  * NOTE: These functions assume that the icaltimetype being edited is in UTC, and
  60  * will convert to/from local time for editing.  "local" in this case is assumed
  61  * to be the time zone in which the WebCit server is running.  A future improvement
  62  * might be to allow the user to specify his/her timezone.
  63  */
  64
  65
  66 void display_icaltimetype_as_webform(struct icaltimetype *t, char *prefix) {
  67         int i;
  68         time_t now;
  69         struct tm tm_now;
  70         int this_year;
  71         time_t tt;
  72         struct tm tm;
  73         const int span = 10;
  74         int all_day_event = 0;
  75         char calhourformat[16];
  76
  77         get_preference("calhourformat", calhourformat, sizeof calhourformat);
  78
  79         now = time(NULL);
  80         localtime_r(&now, &tm_now);
  81         this_year = tm_now.tm_year + 1900;
  82
  83         if (t == NULL) return;
  84         if (t->is_date) all_day_event = 1;
  85         tt = icaltime_as_timet(*t);
  86         if (all_day_event) {
  87                 gmtime_r(&tt, &tm);
  88         }
  89         else {
  90                 localtime_r(&tt, &tm);
  91         }
  92
  93         wprintf("Month: ");
  94         wprintf("<SELECT NAME=\"%s_month\" SIZE=\"1\">\n", prefix);
  95         for (i=0; i<=11; ++i) {
  96                 wprintf("<OPTION %s VALUE=\"%d\">%s</OPTION>\n",
  97                         ((tm.tm_mon == i) ? "SELECTED" : ""),
  98                         i+1,
  99                         months[i]
 100                 );
 101         }
 102         wprintf("</SELECT>\n");
 103
 104         wprintf("Day: ");
 105         wprintf("<SELECT NAME=\"%s_day\" SIZE=\"1\">\n", prefix);
 106         for (i=1; i<=31; ++i) {
 107                 wprintf("<OPTION %s VALUE=\"%d\">%d</OPTION>\n",
 108                         ((tm.tm_mday == i) ? "SELECTED" : ""),
 109                         i, i
 110                 );
 111         }
 112         wprintf("</SELECT>\n");
 113
 114         wprintf("Year: ");
 115         wprintf("<SELECT NAME=\"%s_year\" SIZE=\"1\">\n", prefix);
 116         if ((this_year - t->year) > span) {
 117                 wprintf("<OPTION SELECTED VALUE=\"%d\">%d</OPTION>\n",
 118                         t->year, t->year);
 119         }
 120         for (i=(this_year-span); i<=(this_year+span); ++i) {
 121                 wprintf("<OPTION %s VALUE=\"%d\">%d</OPTION>\n",
 122                         ((t->year == i) ? "SELECTED" : ""),
 123                         i, i
 124                 );
 125         }
 126         if ((t->year - this_year) > span) {
 127                 wprintf("<OPTION SELECTED VALUE=\"%d\">%d</OPTION>\n",
 128                         t->year, t->year);
 129         }
 130         wprintf("</SELECT>\n");
 131
 132         wprintf("Hour: ");
 133         wprintf("<SELECT NAME=\"%s_hour\" SIZE=\"1\">\n", prefix);
 134         for (i=0; i<=23; ++i) {
 135
 136                 if (!strcasecmp(calhourformat, "24")) {
 137                         wprintf("<OPTION %s VALUE=\"%d\">%d</OPTION>\n",
 138                                 ((tm.tm_hour == i) ? "SELECTED" : ""),
 139                                 i, i
 140                         );
 141                 }
 142                 else {
 143                         wprintf("<OPTION %s VALUE=\"%d\">%s</OPTION>\n",
 144                                 ((tm.tm_hour == i) ? "SELECTED" : ""),
 145                                 i, hourname[i]
 146                         );
 147                 }
 148
 149         }
 150         wprintf("</SELECT>\n");
 151
 152         wprintf("Minute: ");
 153         wprintf("<SELECT NAME=\"%s_minute\" SIZE=\"1\">\n", prefix);
 154         for (i=0; i<=59; ++i) {
 155                 if ( (i % 5 == 0) || (tm.tm_min == i) ) {
 156                         wprintf("<OPTION %s VALUE=\"%d\">:%02d</OPTION>\n",
 157                                 ((tm.tm_min == i) ? "SELECTED" : ""),
 158                                 i, i
 159                         );
 160                 }
 161         }
 162         wprintf("</SELECT>\n");
 163 }
 164
 165
 166 struct icaltimetype icaltime_from_webform(char *prefix) {
 167         struct icaltimetype t;
 168         time_t tt;
 169         struct tm tm;
 170         char vname[SIZ];
 171
 172         tt = time(NULL);
 173         localtime_r(&tt, &tm);
 174
 175         sprintf(vname, "%s_month", prefix);     tm.tm_mon = atoi(bstr(vname)) - 1;
 176         sprintf(vname, "%s_day", prefix);       tm.tm_mday = atoi(bstr(vname));
 177         sprintf(vname, "%s_year", prefix);      tm.tm_year = atoi(bstr(vname)) - 1900;
 178         sprintf(vname, "%s_hour", prefix);      tm.tm_hour = atoi(bstr(vname));
 179         sprintf(vname, "%s_minute", prefix);    tm.tm_min = atoi(bstr(vname));
 180
 181         tt = mktime(&tm);
 182         t = icaltime_from_timet(tt, 0);
 183         t = icaltime_normalize(t);
 184         return(t);
 185 }
 186
 187
 188 /*
 189  * Render a PARTSTAT parameter as a string (and put it in parentheses)
 190  */
 191 void partstat_as_string(char *buf, icalproperty *attendee) {
 192         icalparameter *partstat_param;
 193         icalparameter_partstat partstat;
 194
 195         strcpy(buf, "(status unknown)");
 196
 197         partstat_param = icalproperty_get_first_parameter(
 198                                 attendee,
 199                                 ICAL_PARTSTAT_PARAMETER
 200         );
 201         if (partstat_param == NULL) {
 202                 return;
 203         }
 204
 205         partstat = icalparameter_get_partstat(partstat_param);
 206         switch(partstat) {
 207                 case ICAL_PARTSTAT_X:
 208                         strcpy(buf, "(x)");
 209                         break;
 210                 case ICAL_PARTSTAT_NEEDSACTION:
 211                         strcpy(buf, "(needs action)");
 212                         break;
 213                 case ICAL_PARTSTAT_ACCEPTED:
 214                         strcpy(buf, "(accepted)");
 215                         break;
 216                 case ICAL_PARTSTAT_DECLINED:
 217                         strcpy(buf, "(declined)");
 218                         break;
 219                 case ICAL_PARTSTAT_TENTATIVE:
 220                         strcpy(buf, "(tenative)");
 221                         break;
 222                 case ICAL_PARTSTAT_DELEGATED:
 223                         strcpy(buf, "(delegated)");
 224                         break;
 225                 case ICAL_PARTSTAT_COMPLETED:
 226                         strcpy(buf, "(completed)");
 227                         break;
 228                 case ICAL_PARTSTAT_INPROCESS:
 229                         strcpy(buf, "(in process)");
 230                         break;
 231                 case ICAL_PARTSTAT_NONE:
 232                         strcpy(buf, "(none)");
 233                         break;
 234         }
 235 }
 236
 237
 238 /*
 239  * Utility function to encapsulate a subcomponent into a full VCALENDAR
 240  */
 241 icalcomponent *ical_encapsulate_subcomponent(icalcomponent *subcomp) {
 242         icalcomponent *encaps;
 243
 244         lprintf(9, "ical_encapsulate_subcomponent() called\n");
 245
 246         if (subcomp == NULL) {
 247                 lprintf(3, "ERROR: called with NULL argument!\n");
 248                 return NULL;
 249         }
 250
 251         /* If we're already looking at a full VCALENDAR component,
 252          * don't bother ... just return itself.
 253          */
 254         if (icalcomponent_isa(subcomp) == ICAL_VCALENDAR_COMPONENT) {
 255                 lprintf(9, "Already encapsulated.  Returning itself.\n");
 256                 return subcomp;
 257         }
 258
 259         /* Encapsulate the VEVENT component into a complete VCALENDAR */
 260         encaps = icalcomponent_new(ICAL_VCALENDAR_COMPONENT);
 261         if (encaps == NULL) {
 262                 lprintf(3, "Error at %s:%d - could not allocate component!\n",
 263                         __FILE__, __LINE__);
 264                 return NULL;
 265         }
 266
 267         /* Set the Product ID */
 268         icalcomponent_add_property(encaps, icalproperty_new_prodid(PRODID));
 269
 270         /* Set the Version Number */
 271         icalcomponent_add_property(encaps, icalproperty_new_version("2.0"));
 272
 273         /* Encapsulate the subcomponent inside */
 274         lprintf(9, "Doing the encapsulation\n");
 275         icalcomponent_add_component(encaps, subcomp);
 276
 277         /* Convert all timestamps to UTC so we don't have to deal with
 278          * stupid VTIMEZONE crap.
 279          */
 280         ical_dezonify(encaps);
 281
 282         /* Return the object we just created. */
 283         return(encaps);
 284 }
 285
 286
 287
 288
 289 #endif