webcit/dav_options.c

   1 /*
   2  * Handles DAV OPTIONS requests (experimental -- not required by GroupDAV)
   3  *
   4  * Copyright (c) 2005-2012 by the citadel.org team
   5  *
   6  * This program is open source software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License, version 3.
   8  *
   9  *
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  *
  17  *
  18  *
  19  */
  20
  21 #include "webcit.h"
  22 #include "webserver.h"
  23 #include "dav.h"
  24
  25 /*
  26  * The pathname is always going to be /groupdav/room_name/msg_num
  27  */
  28 void dav_options(void)
  29 {
  30         wcsession *WCC = WC;
  31         StrBuf *dav_roomname;
  32         StrBuf *dav_uid;
  33         long dav_msgnum = (-1);
  34         char datestring[256];
  35         time_t now;
  36
  37         now = time(NULL);
  38         http_datestring(datestring, sizeof datestring, now);
  39
  40         dav_roomname = NewStrBuf();
  41         dav_uid = NewStrBuf();
  42         StrBufExtract_token(dav_roomname, WCC->Hdr->HR.ReqLine, 0, '/');
  43         StrBufExtract_token(dav_uid, WCC->Hdr->HR.ReqLine, 1, '/');
  44
  45         syslog(LOG_DEBUG, "\033[35m%s (logged_in=%d)\033[0m", ChrPtr(WCC->Hdr->HR.ReqLine), WC->logged_in);
  46         /*
  47          * If the room name is blank, the client is doing an OPTIONS on the root.
  48          */
  49         if (StrLength(dav_roomname) == 0) {
  50                 syslog(LOG_DEBUG, "\033[36mOPTIONS requested for root\033[0m");
  51                 hprintf("HTTP/1.1 200 OK\r\n");
  52                 dav_common_headers();
  53                 hprintf("Date: %s\r\n", datestring);
  54                 hprintf("DAV: 1\r\n");
  55                 hprintf("Allow: OPTIONS, PROPFIND\r\n");
  56                 hprintf("\r\n");
  57                 begin_burst();
  58                 end_burst();
  59                 FreeStrBuf(&dav_roomname);
  60                 FreeStrBuf(&dav_uid);
  61                 return;
  62         }
  63
  64         /* Go to the correct room. */
  65         if (strcasecmp(ChrPtr(WC->CurRoom.name), ChrPtr(dav_roomname))) {
  66                 gotoroom(dav_roomname);
  67         }
  68
  69         if (strcasecmp(ChrPtr(WC->CurRoom.name), ChrPtr(dav_roomname))) {
  70                 syslog(LOG_DEBUG, "\033[36mOPTIONS requested for invalid item\033[0m");
  71                 hprintf("HTTP/1.1 404 not found\r\n");
  72                 dav_common_headers();
  73                 hprintf("Date: %s\r\n", datestring);
  74                 hprintf(
  75                         "Content-Type: text/plain\r\n");
  76                 begin_burst();
  77                 wc_printf(
  78                         "There is no folder called \"%s\" on this server.\r\n",
  79                         ChrPtr(dav_roomname)
  80                 );
  81                 end_burst();
  82                 FreeStrBuf(&dav_roomname);
  83                 FreeStrBuf(&dav_uid);
  84                 return;
  85         }
  86
  87         /* If dav_uid is non-empty, client is requesting an OPTIONS on
  88          * a specific item in the room.
  89          */
  90         if (StrLength(dav_uid) != 0) {
  91                 syslog(LOG_DEBUG, "\033[36mOPTIONS requested for specific item\033[0m");
  92                 dav_msgnum = locate_message_by_uid(ChrPtr(dav_uid));
  93                 if (dav_msgnum < 0) {
  94                         hprintf("HTTP/1.1 404 not found\r\n");
  95                         dav_common_headers();
  96                         hprintf("Content-Type: text/plain\r\n");
  97                         begin_burst();
  98                         wc_printf(
  99                                 "Object \"%s\" was not found in the \"%s\" folder.\r\n",
 100                                 ChrPtr(dav_uid),
 101                                 ChrPtr(dav_roomname)
 102                         );
 103                         FreeStrBuf(&dav_roomname);
 104                         FreeStrBuf(&dav_uid);
 105                         end_burst();return;
 106                 }
 107
 108                 hprintf("HTTP/1.1 200 OK\r\n");
 109                 dav_common_headers();
 110                 hprintf("Date: %s\r\n", datestring);
 111                 hprintf("DAV: 1\r\n");
 112                 hprintf("Allow: OPTIONS, PROPFIND, GET, PUT, DELETE\r\n");
 113
 114                 begin_burst();
 115                 end_burst();
 116                 FreeStrBuf(&dav_roomname);
 117                 FreeStrBuf(&dav_uid);
 118                 return;
 119         }
 120
 121         FreeStrBuf(&dav_roomname);
 122         FreeStrBuf(&dav_uid);
 123
 124         /*
 125          * We got to this point, which means that the client is requesting
 126          * an OPTIONS on the room itself.
 127          */
 128         syslog(LOG_DEBUG, "\033[36mOPTIONS requested for room '%s' (%slogged in)\033[0m",
 129                 ChrPtr(WC->CurRoom.name),
 130                 ((WC->logged_in) ? "" : "not ")
 131         );
 132         hprintf("HTTP/1.1 200 OK\r\n");
 133         dav_common_headers();
 134         hprintf("Date: %s\r\n", datestring);
 135
 136         /*
 137          * Offer CalDAV (RFC 4791) if this is a calendar room
 138          */
 139         if ( (WC->CurRoom.view == VIEW_CALENDAR) || (WC->CurRoom.view == VIEW_CALBRIEF) ) {
 140                 hprintf("DAV: 1, calendar-access\r\n");
 141                 syslog(LOG_DEBUG, "\033[36mDAV: 1, calendar-access\033[0m");
 142         }
 143         else {
 144                 hprintf("DAV: 1\r\n");
 145                 syslog(LOG_DEBUG, "\033[36mDAV: 1\033[0m");
 146         }
 147
 148         hprintf("Allow: OPTIONS, PROPFIND, GET, PUT, REPORT\r\n");
 149         begin_burst();
 150         end_burst();
 151 }