webcit/dav_options.c

   1
   2 /*
   3  * Handles DAV OPTIONS requests (experimental -- not required by GroupDAV)
   4  *
   5  * Copyright (c) 2005-2012 by the citadel.org team
   6  *
   7  * This program is open source software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License, version 3.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  */
  15
  16 #include "webcit.h"
  17 #include "webserver.h"
  18 #include "dav.h"
  19
  20 /*
  21  * The pathname is always going to be /groupdav/room_name/msg_num
  22  */
  23 void dav_options(void) {
  24         wcsession *WCC = WC;
  25         StrBuf *dav_roomname;
  26         StrBuf *dav_uid;
  27         long dav_msgnum = (-1);
  28         char datestring[256];
  29         time_t now;
  30
  31         now = time(NULL);
  32         http_datestring(datestring, sizeof datestring, now);
  33
  34         dav_roomname = NewStrBuf();
  35         dav_uid = NewStrBuf();
  36         StrBufExtract_token(dav_roomname, WCC->Hdr->HR.ReqLine, 0, '/');
  37         StrBufExtract_token(dav_uid, WCC->Hdr->HR.ReqLine, 1, '/');
  38
  39         syslog(LOG_DEBUG, "\033[35m%s (logged_in=%d)\033[0m", ChrPtr(WCC->Hdr->HR.ReqLine), WC->logged_in);
  40         /*
  41          * If the room name is blank, the client is doing an OPTIONS on the root.
  42          */
  43         if (StrLength(dav_roomname) == 0) {
  44                 syslog(LOG_DEBUG, "\033[36mOPTIONS requested for root\033[0m");
  45                 hprintf("HTTP/1.1 200 OK\r\n");
  46                 dav_common_headers();
  47                 hprintf("Date: %s\r\n", datestring);
  48                 hprintf("DAV: 1\r\n");
  49                 hprintf("Allow: OPTIONS, PROPFIND\r\n");
  50                 hprintf("\r\n");
  51                 begin_burst();
  52                 end_burst();
  53                 FreeStrBuf(&dav_roomname);
  54                 FreeStrBuf(&dav_uid);
  55                 return;
  56         }
  57
  58         /* Go to the correct room. */
  59         if (strcasecmp(ChrPtr(WC->CurRoom.name), ChrPtr(dav_roomname))) {
  60                 gotoroom(dav_roomname);
  61         }
  62
  63         if (strcasecmp(ChrPtr(WC->CurRoom.name), ChrPtr(dav_roomname))) {
  64                 syslog(LOG_DEBUG, "\033[36mOPTIONS requested for invalid item\033[0m");
  65                 hprintf("HTTP/1.1 404 not found\r\n");
  66                 dav_common_headers();
  67                 hprintf("Date: %s\r\n", datestring);
  68                 hprintf("Content-Type: text/plain\r\n");
  69                 begin_burst();
  70                 wc_printf("There is no folder called \"%s\" on this server.\r\n", ChrPtr(dav_roomname)
  71                     );
  72                 end_burst();
  73                 FreeStrBuf(&dav_roomname);
  74                 FreeStrBuf(&dav_uid);
  75                 return;
  76         }
  77
  78         /* If dav_uid is non-empty, client is requesting an OPTIONS on
  79          * a specific item in the room.
  80          */
  81         if (StrLength(dav_uid) != 0) {
  82                 syslog(LOG_DEBUG, "\033[36mOPTIONS requested for specific item\033[0m");
  83                 dav_msgnum = locate_message_by_uid(ChrPtr(dav_uid));
  84                 if (dav_msgnum < 0) {
  85                         hprintf("HTTP/1.1 404 not found\r\n");
  86                         dav_common_headers();
  87                         hprintf("Content-Type: text/plain\r\n");
  88                         begin_burst();
  89                         wc_printf("Object \"%s\" was not found in the \"%s\" folder.\r\n", ChrPtr(dav_uid), ChrPtr(dav_roomname)
  90                             );
  91                         FreeStrBuf(&dav_roomname);
  92                         FreeStrBuf(&dav_uid);
  93                         end_burst();
  94                         return;
  95                 }
  96
  97                 hprintf("HTTP/1.1 200 OK\r\n");
  98                 dav_common_headers();
  99                 hprintf("Date: %s\r\n", datestring);
 100                 hprintf("DAV: 1\r\n");
 101                 hprintf("Allow: OPTIONS, PROPFIND, GET, PUT, DELETE\r\n");
 102
 103                 begin_burst();
 104                 end_burst();
 105                 FreeStrBuf(&dav_roomname);
 106                 FreeStrBuf(&dav_uid);
 107                 return;
 108         }
 109
 110         FreeStrBuf(&dav_roomname);
 111         FreeStrBuf(&dav_uid);
 112
 113         /*
 114          * We got to this point, which means that the client is requesting
 115          * an OPTIONS on the room itself.
 116          */
 117         syslog(LOG_DEBUG, "\033[36mOPTIONS requested for room '%s' (%slogged in)\033[0m",
 118                ChrPtr(WC->CurRoom.name), ((WC->logged_in) ? "" : "not ")
 119             );
 120         hprintf("HTTP/1.1 200 OK\r\n");
 121         dav_common_headers();
 122         hprintf("Date: %s\r\n", datestring);
 123
 124         /*
 125          * Offer CalDAV (RFC 4791) if this is a calendar room
 126          */
 127         if ((WC->CurRoom.view == VIEW_CALENDAR) || (WC->CurRoom.view == VIEW_CALBRIEF)) {
 128                 hprintf("DAV: 1, calendar-access\r\n");
 129                 syslog(LOG_DEBUG, "\033[36mDAV: 1, calendar-access\033[0m");
 130         }
 131         else {
 132                 hprintf("DAV: 1\r\n");
 133                 syslog(LOG_DEBUG, "\033[36mDAV: 1\033[0m");
 134         }
 135
 136         hprintf("Allow: OPTIONS, PROPFIND, GET, PUT, REPORT\r\n");
 137         begin_burst();
 138         end_burst();
 139 }