webcit/groupdav_options.c

   1 /*
   2  * $Id$
   3  *
   4  * Handles DAV OPTIONS requests (experimental -- not required by GroupDAV)
   5  *
   6  */
   7
   8 #include <ctype.h>
   9 #include <stdlib.h>
  10 #include <unistd.h>
  11 #include <stdio.h>
  12 #include <fcntl.h>
  13 #include <signal.h>
  14 #include <sys/types.h>
  15 #include <sys/wait.h>
  16 #include <sys/socket.h>
  17 #include <limits.h>
  18 #include <string.h>
  19 #include <pwd.h>
  20 #include <errno.h>
  21 #include <stdarg.h>
  22 #include <time.h>
  23 #include <pthread.h>
  24 #include "webcit.h"
  25 #include "webserver.h"
  26 #include "groupdav.h"
  27
  28 /*
  29  * The pathname is always going to be /groupdav/room_name/msg_num
  30  */
  31 void groupdav_options(char *dav_pathname) {
  32         char dav_roomname[256];
  33         char dav_uid[256];
  34         long dav_msgnum = (-1);
  35         char datestring[256];
  36         time_t now;
  37
  38         now = time(NULL);
  39         http_datestring(datestring, sizeof datestring, now);
  40
  41         extract_token(dav_roomname, dav_pathname, 2, '/', sizeof dav_roomname);
  42         extract_token(dav_uid, dav_pathname, 3, '/', sizeof dav_uid);
  43
  44         /*
  45          * If the room name is blank, the client is doing a top-level OPTIONS.
  46          */
  47         if (strlen(dav_roomname) == 0) {
  48                 wprintf("HTTP/1.1 200 OK\r\n");
  49                 groupdav_common_headers();
  50                 wprintf("Date: %s\r\n", datestring);
  51                 wprintf("Allow: OPTIONS, PROPFIND\r\n");
  52                 wprintf("\r\n");
  53                 return;
  54         }
  55
  56         /* Go to the correct room. */
  57         if (strcasecmp(WC->wc_roomname, dav_roomname)) {
  58                 gotoroom(dav_roomname);
  59         }
  60         if (strcasecmp(WC->wc_roomname, dav_roomname)) {
  61                 wprintf("HTTP/1.1 404 not found\r\n");
  62                 groupdav_common_headers();
  63                 wprintf("Date: %s\r\n", datestring);
  64                 wprintf(
  65                         "Content-Type: text/plain\r\n"
  66                         "\r\n"
  67                         "There is no folder called \"%s\" on this server.\r\n",
  68                         dav_roomname
  69                 );
  70                 return;
  71         }
  72
  73         /* If dav_uid is non-empty, client is requesting an OPTIONS on
  74          * a specific item in the room.
  75          */
  76         if (strlen(dav_uid) > 0) {
  77
  78                 dav_msgnum = locate_message_by_uid(dav_uid);
  79                 if (dav_msgnum < 0) {
  80                         wprintf("HTTP/1.1 404 not found\r\n");
  81                         groupdav_common_headers();
  82                         wprintf(
  83                                 "Content-Type: text/plain\r\n"
  84                                 "\r\n"
  85                                 "Object \"%s\" was not found in the \"%s\" folder.\r\n",
  86                                 dav_uid,
  87                                 dav_roomname
  88                         );
  89                         return;
  90                 }
  91
  92                 wprintf("HTTP/1.1 200 OK\r\n");
  93                 groupdav_common_headers();
  94                 wprintf("Date: %s\r\n", datestring);
  95                 wprintf("Allow: OPTIONS, PROPFIND, GET, PUT, DELETE\r\n");
  96                 wprintf("\r\n");
  97                 return;
  98         }
  99
 100
 101         /*
 102          * We got to this point, which means that the client is requesting
 103          * an OPTIONS on the room itself.
 104          */
 105         wprintf("HTTP/1.1 200 OK\r\n");
 106         groupdav_common_headers();
 107         wprintf("Date: %s\r\n", datestring);
 108         wprintf("Allow: OPTIONS, PROPFIND, GET, PUT\r\n");
 109         wprintf("\r\n");
 110 }