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  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  */
  14
  15 #include "webcit.h"
  16 #include "webserver.h"
  17 #include "dav.h"
  18
  19 /*
  20  * The pathname is always going to be /groupdav/room_name/msg_num
  21  */
  22 void dav_options(void)
  23 {
  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(
  69                         "Content-Type: text/plain\r\n");
  70                 begin_burst();
  71                 wc_printf(
  72                         "There is no folder called \"%s\" on this server.\r\n",
  73                         ChrPtr(dav_roomname)
  74                 );
  75                 end_burst();
  76                 FreeStrBuf(&dav_roomname);
  77                 FreeStrBuf(&dav_uid);
  78                 return;
  79         }
  80
  81         /* If dav_uid is non-empty, client is requesting an OPTIONS on
  82          * a specific item in the room.
  83          */
  84         if (StrLength(dav_uid) != 0) {
  85                 syslog(LOG_DEBUG, "\033[36mOPTIONS requested for specific item\033[0m");
  86                 dav_msgnum = locate_message_by_uid(ChrPtr(dav_uid));
  87                 if (dav_msgnum < 0) {
  88                         hprintf("HTTP/1.1 404 not found\r\n");
  89                         dav_common_headers();
  90                         hprintf("Content-Type: text/plain\r\n");
  91                         begin_burst();
  92                         wc_printf(
  93                                 "Object \"%s\" was not found in the \"%s\" folder.\r\n",
  94                                 ChrPtr(dav_uid),
  95                                 ChrPtr(dav_roomname)
  96                         );
  97                         FreeStrBuf(&dav_roomname);
  98                         FreeStrBuf(&dav_uid);
  99                         end_burst();return;
 100                 }
 101
 102                 hprintf("HTTP/1.1 200 OK\r\n");
 103                 dav_common_headers();
 104                 hprintf("Date: %s\r\n", datestring);
 105                 hprintf("DAV: 1\r\n");
 106                 hprintf("Allow: OPTIONS, PROPFIND, GET, PUT, DELETE\r\n");
 107
 108                 begin_burst();
 109                 end_burst();
 110                 FreeStrBuf(&dav_roomname);
 111                 FreeStrBuf(&dav_uid);
 112                 return;
 113         }
 114
 115         FreeStrBuf(&dav_roomname);
 116         FreeStrBuf(&dav_uid);
 117
 118         /*
 119          * We got to this point, which means that the client is requesting
 120          * an OPTIONS on the room itself.
 121          */
 122         syslog(LOG_DEBUG, "\033[36mOPTIONS requested for room '%s' (%slogged in)\033[0m",
 123                 ChrPtr(WC->CurRoom.name),
 124                 ((WC->logged_in) ? "" : "not ")
 125         );
 126         hprintf("HTTP/1.1 200 OK\r\n");
 127         dav_common_headers();
 128         hprintf("Date: %s\r\n", datestring);
 129
 130         /*
 131          * Offer CalDAV (RFC 4791) if this is a calendar room
 132          */
 133         if ( (WC->CurRoom.view == VIEW_CALENDAR) || (WC->CurRoom.view == VIEW_CALBRIEF) ) {
 134                 hprintf("DAV: 1, calendar-access\r\n");
 135                 syslog(LOG_DEBUG, "\033[36mDAV: 1, calendar-access\033[0m");
 136         }
 137         else {
 138                 hprintf("DAV: 1\r\n");
 139                 syslog(LOG_DEBUG, "\033[36mDAV: 1\033[0m");
 140         }
 141
 142         hprintf("Allow: OPTIONS, PROPFIND, GET, PUT, REPORT\r\n");
 143         begin_burst();
 144         end_burst();
 145 }