webcit/calendar_tools.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 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
  69         time_t now;
  70         struct tm tm_now;
  71         int this_year;
  72
  73         time_t tt;
  74         struct tm tm;
  75
  76         const int span = 10;
  77
  78         now = time(NULL);
  79         memcpy(&tm_now, localtime(&now), sizeof(struct tm));
  80         this_year = tm_now.tm_year + 1900;
  81
  82         if (t == NULL) return;
  83         tt = icaltime_as_timet(*t);
  84         memcpy(&tm, localtime(&tt), sizeof(struct tm));
  85
  86         wprintf("Month: ");
  87         wprintf("<SELECT NAME=\"%s_month\" SIZE=\"1\">\n", prefix);
  88         for (i=0; i<=11; ++i) {
  89                 wprintf("<OPTION %s VALUE=\"%d\">%s</OPTION>\n",
  90                         ((tm.tm_mon == i) ? "SELECTED" : ""),
  91                         i+1,
  92                         months[i]
  93                 );
  94         }
  95         wprintf("</SELECT>\n");
  96
  97         wprintf("Day: ");
  98         wprintf("<SELECT NAME=\"%s_day\" SIZE=\"1\">\n", prefix);
  99         for (i=1; i<=31; ++i) {
 100                 wprintf("<OPTION %s VALUE=\"%d\">%d</OPTION>\n",
 101                         ((tm.tm_mday == i) ? "SELECTED" : ""),
 102                         i, i
 103                 );
 104         }
 105         wprintf("</SELECT>\n");
 106
 107         wprintf("Year: ");
 108         wprintf("<SELECT NAME=\"%s_year\" SIZE=\"1\">\n", prefix);
 109         if ((this_year - t->year) > span) {
 110                 wprintf("<OPTION SELECTED VALUE=\"%d\">%d</OPTION>\n",
 111                         t->year, t->year);
 112         }
 113         for (i=(this_year-span); i<=(this_year+span); ++i) {
 114                 wprintf("<OPTION %s VALUE=\"%d\">%d</OPTION>\n",
 115                         ((t->year == i) ? "SELECTED" : ""),
 116                         i, i
 117                 );
 118         }
 119         if ((t->year - this_year) > span) {
 120                 wprintf("<OPTION SELECTED VALUE=\"%d\">%d</OPTION>\n",
 121                         t->year, t->year);
 122         }
 123         wprintf("</SELECT>\n");
 124
 125         wprintf("Hour: ");
 126         wprintf("<SELECT NAME=\"%s_hour\" SIZE=\"1\">\n", prefix);
 127         for (i=0; i<=23; ++i) {
 128                 wprintf("<OPTION %s VALUE=\"%d\">%s</OPTION>\n",
 129                         ((tm.tm_hour == i) ? "SELECTED" : ""),
 130                         i, hourname[i]
 131                 );
 132         }
 133         wprintf("</SELECT>\n");
 134
 135         wprintf("Minute: ");
 136         wprintf("<SELECT NAME=\"%s_minute\" SIZE=\"1\">\n", prefix);
 137         for (i=0; i<=59; ++i) {
 138                 if ( (i % 5 == 0) || (tm.tm_min == i) ) {
 139                         wprintf("<OPTION %s VALUE=\"%d\">:%02d</OPTION>\n",
 140                                 ((tm.tm_min == i) ? "SELECTED" : ""),
 141                                 i, i
 142                         );
 143                 }
 144         }
 145         wprintf("</SELECT>\n");
 146 }
 147
 148
 149 struct icaltimetype icaltime_from_webform(char *prefix) {
 150         struct icaltimetype t;
 151         time_t tt;
 152         struct tm tm;
 153         char vname[SIZ];
 154
 155         tt = time(NULL);
 156         memcpy(&tm, localtime(&tt), sizeof(struct tm));
 157
 158         sprintf(vname, "%s_month", prefix);     tm.tm_mon = atoi(bstr(vname)) - 1;
 159         sprintf(vname, "%s_day", prefix);       tm.tm_mday = atoi(bstr(vname));
 160         sprintf(vname, "%s_year", prefix);      tm.tm_year = atoi(bstr(vname)) - 1900;
 161         sprintf(vname, "%s_hour", prefix);      tm.tm_hour = atoi(bstr(vname));
 162         sprintf(vname, "%s_minute", prefix);    tm.tm_min = atoi(bstr(vname));
 163
 164         tt = mktime(&tm);
 165         t = icaltime_from_timet(tt, 0);
 166         t = icaltime_normalize(t);
 167         return(t);
 168 }
 169
 170
 171 /*
 172  * Generae a new, globally unique UID parameter for a calendar object.
 173  */
 174 void generate_new_uid(char *buf) {
 175         static int seq = 0;
 176
 177         sprintf(buf, "%ld-%d@%s",
 178                 (long)time(NULL),
 179                 (seq++),
 180                 serv_info.serv_fqdn);
 181 }
 182
 183 /*
 184  * Render a PARTSTAT parameter as a string (and put it in parentheses)
 185  */
 186 void partstat_as_string(char *buf, icalproperty *attendee) {
 187         icalparameter *partstat_param;
 188         icalparameter_partstat partstat;
 189
 190         strcpy(buf, "(status unknown)");
 191
 192         partstat_param = icalproperty_get_first_parameter(
 193                                 attendee,
 194                                 ICAL_PARTSTAT_PARAMETER
 195         );
 196         if (partstat_param == NULL) {
 197                 return;
 198         }
 199
 200         partstat = icalparameter_get_partstat(partstat_param);
 201         switch(partstat) {
 202                 case ICAL_PARTSTAT_X:
 203                         strcpy(buf, "(x)");
 204                         break;
 205                 case ICAL_PARTSTAT_NEEDSACTION:
 206                         strcpy(buf, "(needs action)");
 207                         break;
 208                 case ICAL_PARTSTAT_ACCEPTED:
 209                         strcpy(buf, "(accepted)");
 210                         break;
 211                 case ICAL_PARTSTAT_DECLINED:
 212                         strcpy(buf, "(declined)");
 213                         break;
 214                 case ICAL_PARTSTAT_TENTATIVE:
 215                         strcpy(buf, "(tenative)");
 216                         break;
 217                 case ICAL_PARTSTAT_DELEGATED:
 218                         strcpy(buf, "(delegated)");
 219                         break;
 220                 case ICAL_PARTSTAT_COMPLETED:
 221                         strcpy(buf, "(completed)");
 222                         break;
 223                 case ICAL_PARTSTAT_INPROCESS:
 224                         strcpy(buf, "(in process)");
 225                         break;
 226                 case ICAL_PARTSTAT_NONE:
 227                         strcpy(buf, "(none)");
 228                         break;
 229         }
 230 }
 231
 232
 233 /*
 234  * Utility function to encapsulate a subcomponent into a full VCALENDAR
 235  */
 236 icalcomponent *ical_encapsulate_subcomponent(icalcomponent *subcomp) {
 237         icalcomponent *encaps;
 238
 239         lprintf(9, "ical_encapsulate_subcomponent() called\n");
 240
 241         if (subcomp == NULL) {
 242                 lprintf(3, "ERROR: called with NULL argument!\n");
 243                 return NULL;
 244         }
 245
 246         /* If we're already looking at a full VCALENDAR component,
 247          * don't bother ... just return itself.
 248          */
 249         if (icalcomponent_isa(subcomp) == ICAL_VCALENDAR_COMPONENT) {
 250                 lprintf(9, "Already encapsulated.  Returning itself.\n");
 251                 return subcomp;
 252         }
 253
 254         /* Encapsulate the VEVENT component into a complete VCALENDAR */
 255         lprintf(9, "Creating new calendar component\n");
 256         encaps = icalcomponent_new(ICAL_VCALENDAR_COMPONENT);
 257         if (encaps == NULL) {
 258                 lprintf(3, "Error at %s:%d - could not allocate component!\n",
 259                         __FILE__, __LINE__);
 260                 return NULL;
 261         }
 262
 263         /* Set the Product ID */
 264         icalcomponent_add_property(encaps, icalproperty_new_prodid(PRODID));
 265
 266         /* Set the Version Number */
 267         icalcomponent_add_property(encaps, icalproperty_new_version("2.0"));
 268
 269         /* Encapsulate the subcomponent inside */
 270         lprintf(9, "Doing the encapsulation\n");
 271
 272         lprintf(9, "Here's what we've got so far:\n-----%s\n-----\n",
 273                 icalcomponent_as_ical_string(encaps)
 274         );
 275         lprintf(9, "Here's what we want to insert:\n-----%s\n-----\n",
 276                 icalcomponent_as_ical_string(subcomp)
 277         );
 278
 279         icalcomponent_add_component(encaps, subcomp);
 280
 281         /* Convert all timestamps to UTC so we don't have to deal with
 282          * stupid VTIMEZONE crap.
 283          */
 284         lprintf(9, "Dezonifying it all\n");
 285         ical_dezonify(encaps);
 286
 287         /* Return the object we just created. */
 288         lprintf(9, "...done!\n");
 289         return(encaps);
 290 }
 291
 292
 293
 294
 295 #endif