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
  76         now = time(NULL);
  77         localtime_r(&now, &tm_now);
  78         this_year = tm_now.tm_year + 1900;
  79
  80         if (t == NULL) return;
  81         if (t->is_date) all_day_event = 1;
  82         tt = icaltime_as_timet(*t);
  83         if (all_day_event) {
  84                 gmtime_r(&tt, &tm);
  85         }
  86         else {
  87                 localtime_r(&tt, &tm);
  88         }
  89
  90         wprintf("Month: ");
  91         wprintf("<SELECT NAME=\"%s_month\" SIZE=\"1\">\n", prefix);
  92         for (i=0; i<=11; ++i) {
  93                 wprintf("<OPTION %s VALUE=\"%d\">%s</OPTION>\n",
  94                         ((tm.tm_mon == i) ? "SELECTED" : ""),
  95                         i+1,
  96                         months[i]
  97                 );
  98         }
  99         wprintf("</SELECT>\n");
 100
 101         wprintf("Day: ");
 102         wprintf("<SELECT NAME=\"%s_day\" SIZE=\"1\">\n", prefix);
 103         for (i=1; i<=31; ++i) {
 104                 wprintf("<OPTION %s VALUE=\"%d\">%d</OPTION>\n",
 105                         ((tm.tm_mday == i) ? "SELECTED" : ""),
 106                         i, i
 107                 );
 108         }
 109         wprintf("</SELECT>\n");
 110
 111         wprintf("Year: ");
 112         wprintf("<SELECT NAME=\"%s_year\" SIZE=\"1\">\n", prefix);
 113         if ((this_year - t->year) > span) {
 114                 wprintf("<OPTION SELECTED VALUE=\"%d\">%d</OPTION>\n",
 115                         t->year, t->year);
 116         }
 117         for (i=(this_year-span); i<=(this_year+span); ++i) {
 118                 wprintf("<OPTION %s VALUE=\"%d\">%d</OPTION>\n",
 119                         ((t->year == i) ? "SELECTED" : ""),
 120                         i, i
 121                 );
 122         }
 123         if ((t->year - this_year) > span) {
 124                 wprintf("<OPTION SELECTED VALUE=\"%d\">%d</OPTION>\n",
 125                         t->year, t->year);
 126         }
 127         wprintf("</SELECT>\n");
 128
 129         wprintf("Hour: ");
 130         wprintf("<SELECT NAME=\"%s_hour\" SIZE=\"1\">\n", prefix);
 131         for (i=0; i<=23; ++i) {
 132                 wprintf("<OPTION %s VALUE=\"%d\">%s</OPTION>\n",
 133                         ((tm.tm_hour == i) ? "SELECTED" : ""),
 134                         i, hourname[i]
 135                 );
 136         }
 137         wprintf("</SELECT>\n");
 138
 139         wprintf("Minute: ");
 140         wprintf("<SELECT NAME=\"%s_minute\" SIZE=\"1\">\n", prefix);
 141         for (i=0; i<=59; ++i) {
 142                 if ( (i % 5 == 0) || (tm.tm_min == i) ) {
 143                         wprintf("<OPTION %s VALUE=\"%d\">:%02d</OPTION>\n",
 144                                 ((tm.tm_min == i) ? "SELECTED" : ""),
 145                                 i, i
 146                         );
 147                 }
 148         }
 149         wprintf("</SELECT>\n");
 150 }
 151
 152
 153 struct icaltimetype icaltime_from_webform(char *prefix) {
 154         struct icaltimetype t;
 155         time_t tt;
 156         struct tm tm;
 157         char vname[SIZ];
 158
 159         tt = time(NULL);
 160         localtime_r(&tt, &tm);
 161
 162         sprintf(vname, "%s_month", prefix);     tm.tm_mon = atoi(bstr(vname)) - 1;
 163         sprintf(vname, "%s_day", prefix);       tm.tm_mday = atoi(bstr(vname));
 164         sprintf(vname, "%s_year", prefix);      tm.tm_year = atoi(bstr(vname)) - 1900;
 165         sprintf(vname, "%s_hour", prefix);      tm.tm_hour = atoi(bstr(vname));
 166         sprintf(vname, "%s_minute", prefix);    tm.tm_min = atoi(bstr(vname));
 167
 168         tt = mktime(&tm);
 169         t = icaltime_from_timet(tt, 0);
 170         t = icaltime_normalize(t);
 171         return(t);
 172 }
 173
 174
 175 /*
 176  * Render a PARTSTAT parameter as a string (and put it in parentheses)
 177  */
 178 void partstat_as_string(char *buf, icalproperty *attendee) {
 179         icalparameter *partstat_param;
 180         icalparameter_partstat partstat;
 181
 182         strcpy(buf, "(status unknown)");
 183
 184         partstat_param = icalproperty_get_first_parameter(
 185                                 attendee,
 186                                 ICAL_PARTSTAT_PARAMETER
 187         );
 188         if (partstat_param == NULL) {
 189                 return;
 190         }
 191
 192         partstat = icalparameter_get_partstat(partstat_param);
 193         switch(partstat) {
 194                 case ICAL_PARTSTAT_X:
 195                         strcpy(buf, "(x)");
 196                         break;
 197                 case ICAL_PARTSTAT_NEEDSACTION:
 198                         strcpy(buf, "(needs action)");
 199                         break;
 200                 case ICAL_PARTSTAT_ACCEPTED:
 201                         strcpy(buf, "(accepted)");
 202                         break;
 203                 case ICAL_PARTSTAT_DECLINED:
 204                         strcpy(buf, "(declined)");
 205                         break;
 206                 case ICAL_PARTSTAT_TENTATIVE:
 207                         strcpy(buf, "(tenative)");
 208                         break;
 209                 case ICAL_PARTSTAT_DELEGATED:
 210                         strcpy(buf, "(delegated)");
 211                         break;
 212                 case ICAL_PARTSTAT_COMPLETED:
 213                         strcpy(buf, "(completed)");
 214                         break;
 215                 case ICAL_PARTSTAT_INPROCESS:
 216                         strcpy(buf, "(in process)");
 217                         break;
 218                 case ICAL_PARTSTAT_NONE:
 219                         strcpy(buf, "(none)");
 220                         break;
 221         }
 222 }
 223
 224
 225 /*
 226  * Utility function to encapsulate a subcomponent into a full VCALENDAR
 227  */
 228 icalcomponent *ical_encapsulate_subcomponent(icalcomponent *subcomp) {
 229         icalcomponent *encaps;
 230
 231         lprintf(9, "ical_encapsulate_subcomponent() called\n");
 232
 233         if (subcomp == NULL) {
 234                 lprintf(3, "ERROR: called with NULL argument!\n");
 235                 return NULL;
 236         }
 237
 238         /* If we're already looking at a full VCALENDAR component,
 239          * don't bother ... just return itself.
 240          */
 241         if (icalcomponent_isa(subcomp) == ICAL_VCALENDAR_COMPONENT) {
 242                 lprintf(9, "Already encapsulated.  Returning itself.\n");
 243                 return subcomp;
 244         }
 245
 246         /* Encapsulate the VEVENT component into a complete VCALENDAR */
 247         encaps = icalcomponent_new(ICAL_VCALENDAR_COMPONENT);
 248         if (encaps == NULL) {
 249                 lprintf(3, "Error at %s:%d - could not allocate component!\n",
 250                         __FILE__, __LINE__);
 251                 return NULL;
 252         }
 253
 254         /* Set the Product ID */
 255         icalcomponent_add_property(encaps, icalproperty_new_prodid(PRODID));
 256
 257         /* Set the Version Number */
 258         icalcomponent_add_property(encaps, icalproperty_new_version("2.0"));
 259
 260         /* Encapsulate the subcomponent inside */
 261         lprintf(9, "Doing the encapsulation\n");
 262         icalcomponent_add_component(encaps, subcomp);
 263
 264         /* Convert all timestamps to UTC so we don't have to deal with
 265          * stupid VTIMEZONE crap.
 266          */
 267         ical_dezonify(encaps);
 268
 269         /* Return the object we just created. */
 270         return(encaps);
 271 }
 272
 273
 274
 275
 276 #endif