webcit/groupdav_options.c

   1 /*
   2  * $Id$
   3  *
   4  * Handles DAV OPTIONS requests (experimental -- not required by GroupDAV)
   5  *
   6  */
   7
   8 #include "webcit.h"
   9 #include "webserver.h"
  10 #include "groupdav.h"
  11
  12 /*
  13  * The pathname is always going to be /groupdav/room_name/msg_num
  14  */
  15 void groupdav_options(StrBuf *dav_pathname) {
  16         StrBuf *dav_roomname;
  17         StrBuf *dav_uid;
  18         long dav_msgnum = (-1);
  19         char datestring[256];
  20         time_t now;
  21
  22         now = time(NULL);
  23         http_datestring(datestring, sizeof datestring, now);
  24
  25         dav_roomname = NewStrBuf();
  26         dav_uid = NewStrBuf();
  27         StrBufExtract_token(dav_roomname, dav_pathname, 2, '/');
  28         StrBufExtract_token(dav_uid, dav_pathname, 3, '/');
  29
  30         /*
  31          * If the room name is blank, the client is doing a top-level OPTIONS.
  32          */
  33         if (StrLength(dav_roomname) == 0) {
  34                 hprintf("HTTP/1.1 200 OK\r\n");
  35                 groupdav_common_headers();
  36                 hprintf("Date: %s\r\n", datestring);
  37                 hprintf("DAV: 1\r\n");
  38                 hprintf("Allow: OPTIONS, PROPFIND\r\n");
  39                 hprintf("\r\n");
  40                 begin_burst();
  41                 end_burst();
  42                 FreeStrBuf(&dav_roomname);
  43                 FreeStrBuf(&dav_uid);
  44                 return;
  45         }
  46
  47         /* Go to the correct room. */
  48         if (strcasecmp(ChrPtr(WC->wc_roomname), ChrPtr(dav_roomname))) {
  49                 gotoroom(dav_roomname);
  50         }
  51
  52         if (strcasecmp(ChrPtr(WC->wc_roomname), ChrPtr(dav_roomname))) {
  53                 hprintf("HTTP/1.1 404 not found\r\n");
  54                 groupdav_common_headers();
  55                 hprintf("Date: %s\r\n", datestring);
  56                 hprintf(
  57                         "Content-Type: text/plain\r\n"
  58                         "\r\n"
  59                         "There is no folder called \"%s\" on this server.\r\n",
  60                         ChrPtr(dav_roomname)
  61                 );
  62                 begin_burst();
  63                 end_burst();
  64                 FreeStrBuf(&dav_roomname);
  65                 FreeStrBuf(&dav_uid);
  66                 return;
  67         }
  68
  69         /* If dav_uid is non-empty, client is requesting an OPTIONS on
  70          * a specific item in the room.
  71          */
  72         if (StrLength(dav_uid) != 0) {
  73
  74                 dav_msgnum = locate_message_by_uid(ChrPtr(dav_uid));
  75                 if (dav_msgnum < 0) {
  76                         hprintf("HTTP/1.1 404 not found\r\n");
  77                         groupdav_common_headers();
  78                         hprintf(
  79                                 "Content-Type: text/plain\r\n"
  80                                 "\r\n"
  81                                 "Object \"%s\" was not found in the \"%s\" folder.\r\n",
  82                                 ChrPtr(dav_uid),
  83                                 ChrPtr(dav_roomname)
  84                         );
  85                         FreeStrBuf(&dav_roomname);
  86                         FreeStrBuf(&dav_uid);
  87                         begin_burst();end_burst();return;
  88                 }
  89
  90                 hprintf("HTTP/1.1 200 OK\r\n");
  91                 groupdav_common_headers();
  92                 hprintf("Date: %s\r\n", datestring);
  93                 hprintf("DAV: 1\r\n");
  94                 hprintf("Allow: OPTIONS, PROPFIND, GET, PUT, DELETE\r\n");
  95                 hprintf("\r\n");
  96                 begin_burst();
  97                 end_burst();
  98                 FreeStrBuf(&dav_roomname);
  99                 FreeStrBuf(&dav_uid);
 100                 return;
 101         }
 102
 103         FreeStrBuf(&dav_roomname);
 104         FreeStrBuf(&dav_uid);
 105
 106         /*
 107          * We got to this point, which means that the client is requesting
 108          * an OPTIONS on the room itself.
 109          */
 110         hprintf("HTTP/1.1 200 OK\r\n");
 111         groupdav_common_headers();
 112         hprintf("Date: %s\r\n", datestring);
 113         hprintf("DAV: 1\r\n");
 114         hprintf("Allow: OPTIONS, PROPFIND, GET, PUT\r\n");
 115         hprintf("\r\n");
 116         begin_burst();
 117         end_burst();
 118 }