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(void)
  16 {
  17         wcsession *WCC = WC;
  18         StrBuf *dav_roomname;
  19         StrBuf *dav_uid;
  20         long dav_msgnum = (-1);
  21         char datestring[256];
  22         time_t now;
  23
  24         now = time(NULL);
  25         http_datestring(datestring, sizeof datestring, now);
  26
  27         dav_roomname = NewStrBuf();
  28         dav_uid = NewStrBuf();
  29         StrBufExtract_token(dav_roomname, WCC->Hdr->HR.ReqLine, 0, '/');
  30         StrBufExtract_token(dav_uid, WCC->Hdr->HR.ReqLine, 1, '/');
  31
  32         /*
  33          * If the room name is blank, the client is doing a top-level OPTIONS.
  34          */
  35         if (StrLength(dav_roomname) == 0) {
  36                 hprintf("HTTP/1.1 200 OK\r\n");
  37                 groupdav_common_headers();
  38                 hprintf("Date: %s\r\n", datestring);
  39                 hprintf("DAV: 1\r\n");
  40                 hprintf("Allow: OPTIONS, PROPFIND\r\n");
  41                 hprintf("\r\n");
  42                 begin_burst();
  43                 end_burst();
  44                 FreeStrBuf(&dav_roomname);
  45                 FreeStrBuf(&dav_uid);
  46                 return;
  47         }
  48
  49         /* Go to the correct room. */
  50         if (strcasecmp(ChrPtr(WC->wc_roomname), ChrPtr(dav_roomname))) {
  51                 gotoroom(dav_roomname);
  52         }
  53
  54         if (strcasecmp(ChrPtr(WC->wc_roomname), ChrPtr(dav_roomname))) {
  55                 hprintf("HTTP/1.1 404 not found\r\n");
  56                 groupdav_common_headers();
  57                 hprintf("Date: %s\r\n", datestring);
  58                 hprintf(
  59                         "Content-Type: text/plain\r\n"
  60                         "\r\n"
  61                         "There is no folder called \"%s\" on this server.\r\n",
  62                         ChrPtr(dav_roomname)
  63                 );
  64                 begin_burst();
  65                 end_burst();
  66                 FreeStrBuf(&dav_roomname);
  67                 FreeStrBuf(&dav_uid);
  68                 return;
  69         }
  70
  71         /* If dav_uid is non-empty, client is requesting an OPTIONS on
  72          * a specific item in the room.
  73          */
  74         if (StrLength(dav_uid) != 0) {
  75
  76                 dav_msgnum = locate_message_by_uid(ChrPtr(dav_uid));
  77                 if (dav_msgnum < 0) {
  78                         hprintf("HTTP/1.1 404 not found\r\n");
  79                         groupdav_common_headers();
  80                         hprintf(
  81                                 "Content-Type: text/plain\r\n"
  82                                 "\r\n"
  83                                 "Object \"%s\" was not found in the \"%s\" folder.\r\n",
  84                                 ChrPtr(dav_uid),
  85                                 ChrPtr(dav_roomname)
  86                         );
  87                         FreeStrBuf(&dav_roomname);
  88                         FreeStrBuf(&dav_uid);
  89                         begin_burst();end_burst();return;
  90                 }
  91
  92                 hprintf("HTTP/1.1 200 OK\r\n");
  93                 groupdav_common_headers();
  94                 hprintf("Date: %s\r\n", datestring);
  95                 hprintf("DAV: 1\r\n");
  96                 hprintf("Allow: OPTIONS, PROPFIND, GET, PUT, DELETE\r\n");
  97                 hprintf("\r\n");
  98                 begin_burst();
  99                 end_burst();
 100                 FreeStrBuf(&dav_roomname);
 101                 FreeStrBuf(&dav_uid);
 102                 return;
 103         }
 104
 105         FreeStrBuf(&dav_roomname);
 106         FreeStrBuf(&dav_uid);
 107
 108         /*
 109          * We got to this point, which means that the client is requesting
 110          * an OPTIONS on the room itself.
 111          */
 112         hprintf("HTTP/1.1 200 OK\r\n");
 113         groupdav_common_headers();
 114         hprintf("Date: %s\r\n", datestring);
 115         hprintf("DAV: 1\r\n");
 116         hprintf("Allow: OPTIONS, PROPFIND, GET, PUT\r\n");
 117         hprintf("\r\n");
 118         begin_burst();
 119         end_burst();
 120 }