2 * Entry point for GroupDAV functions
4 * Copyright (c) 2005-2012 by the citadel.org team
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.
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.
16 #include "webserver.h"
19 extern HashList *HandlerHash;
21 HashList *DavNamespaces = NULL;
24 * Output HTTP headers which are common to all requests.
26 * Please observe that we don't use the usual output_headers()
27 * and wDumpContent() functions in the GroupDAV subsystem, so we
28 * do our own header stuff here.
31 void dav_common_headers(void) {
34 "Connection: close\r\n",
35 PACKAGE_STRING, ChrPtr(WC->serv_info->serv_software)
42 * string conversion function
44 void euid_escapize(char *target, const char *source) {
46 int target_length = 0;
50 for (i=0; i<len; ++i) {
51 if ( (isalnum(source[i])) || (source[i]=='-') || (source[i]=='_') ) {
52 target[target_length] = source[i];
53 target[++target_length] = 0;
56 sprintf(&target[target_length], "=%02X", (0xFF & source[i]));
63 * string conversion function
65 void euid_unescapize(char *target, const char *source) {
68 int target_length = 0;
73 for (a = 0; a < len; ++a) {
74 if (source[a] == '=') {
75 hex[0] = source[a + 1];
76 hex[1] = source[a + 2];
80 target[target_length] = b;
81 target[++target_length] = 0;
85 target[target_length] = source[a];
86 target[++target_length] = 0;
95 * Main entry point for GroupDAV requests
102 syslog(LOG_DEBUG, "dav_main() called, logged_in=%d", WCC->logged_in );
104 StrBufUnescape(WCC->Hdr->HR.ReqLine, 0);
105 StrBufStripSlashes(WCC->Hdr->HR.ReqLine, 0);
108 * If there's an If-Match: header, strip out the quotes if present, and
109 * then if all that's left is an asterisk, make it go away entirely.
111 len = StrLength(WCC->Hdr->HR.dav_ifmatch);
113 StrBufTrim(WCC->Hdr->HR.dav_ifmatch);
114 if (ChrPtr(WCC->Hdr->HR.dav_ifmatch)[0] == '\"') {
115 StrBufCutLeft(WCC->Hdr->HR.dav_ifmatch, 1);
117 for (i=0; i<len; ++i) {
118 if (ChrPtr(WCC->Hdr->HR.dav_ifmatch)[i] == '\"') {
119 StrBufCutAt(WCC->Hdr->HR.dav_ifmatch, i, NULL);
120 len = StrLength(WCC->Hdr->HR.dav_ifmatch);
124 if (!strcmp(ChrPtr(WCC->Hdr->HR.dav_ifmatch), "*")) {
125 FlushStrBuf(WCC->Hdr->HR.dav_ifmatch);
129 switch (WCC->Hdr->HR.eReqType)
132 * The OPTIONS method is not required by GroupDAV but it will be
133 * needed for future implementations of other DAV-based protocols.
140 * The PROPFIND method is basically used to list all objects in a
141 * room, or to list all relevant rooms on the server.
148 * The GET method is used for fetching individual items.
155 * The PUT method is used to add or modify items.
162 * The DELETE method kills, maims, and destroys.
169 * The REPORT method tells us that Mike Shaver is a self-righteous asshole.
177 * Couldn't find what we were looking for. Die in a car fire.
179 hprintf("HTTP/1.1 501 Method not implemented\r\n");
180 dav_common_headers();
181 hprintf("Content-Type: text/plain\r\n");
182 wc_printf("GroupDAV method \"%s\" is not implemented.\r\n",
183 ReqStrs[WCC->Hdr->HR.eReqType]);
190 * Output our host prefix for globally absolute URL's.
192 void dav_identify_host(void) {
193 wc_printf("%s", ChrPtr(site_prefix));
197 void tmplput_dav_HOSTNAME(StrBuf *Target, WCTemplputParams *TP)
199 StrBufAppendPrintf(Target, "%s", ChrPtr(site_prefix));
203 * Output our host prefix for globally absolute URL's.
205 void dav_identify_hosthdr(void) {
206 hprintf("%s", ChrPtr(site_prefix));
210 void Header_HandleIfMatch(StrBuf *Line, ParsedHttpHdrs *hdr)
212 hdr->HR.dav_ifmatch = Line;
216 void Header_HandleDepth(StrBuf *Line, ParsedHttpHdrs *hdr)
218 if (!strcasecmp(ChrPtr(Line), "infinity")) {
219 hdr->HR.dav_depth = 32767;
221 else if (strcmp(ChrPtr(Line), "0") == 0) {
222 hdr->HR.dav_depth = 0;
224 else if (strcmp(ChrPtr(Line), "1") == 0) {
225 hdr->HR.dav_depth = 1;
230 int Conditional_DAV_DEPTH(StrBuf *Target, WCTemplputParams *TP)
232 return WC->Hdr->HR.dav_depth == GetTemplateTokenNumber(Target, TP, 2, 0);
236 void RegisterDAVNamespace(const char * UrlString,
238 const char *DisplayName,
241 WebcitRESTDispatchID RID,
246 /* first put it in... */
247 WebcitAddUrlHandler(UrlString, UrlSLen, DisplayName, dslen, F, Flags|PARSE_REST_URL);
248 /* get it out again... */
249 GetHash(HandlerHash, UrlString, UrlSLen, &vHandler);
250 ((WebcitHandler*)vHandler)->RID = RID;
251 /* and keep a copy of it, so we can compare it later */
252 Put(DavNamespaces, UrlString, UrlSLen, vHandler, reference_free_handler);
256 int Conditional_DAV_NS(StrBuf *Target, WCTemplputParams *TP)
263 GetTemplateTokenString(NULL, TP, 2, &NS, &NSLen);
264 GetHash(HandlerHash, NS, NSLen, &vHandler);
265 return WCC->Hdr->HR.Handler == vHandler;
269 int Conditional_DAV_NSCURRENT(StrBuf *Target, WCTemplputParams *TP)
275 return WCC->Hdr->HR.Handler == vHandler;
279 void tmplput_DAV_NAMESPACE(StrBuf *Target, WCTemplputParams *TP)
283 if (TP->Filter.ContextType == CTX_DAVNS) {
285 H = (WebcitHandler*) CTX;
286 StrBufAppendTemplate(Target, TP, H->Name, 0);
288 else if (WCC->Hdr->HR.Handler != NULL) {
289 StrBufAppendTemplate(Target, TP, WCC->Hdr->HR.Handler->Name, 0);
294 int GroupdavDispatchREST(RESTDispatchID WhichAction, int IgnoreFloor)
301 GetHash(WCC->Directory, IKEY(WCC->ThisRoom->nRoomNameParts + 1), &vDir);
302 return locate_message_by_uid(ChrPtr((StrBuf*)vDir)) != -1;
303 /* TODO: remember euid */
315 ServerStartModule_DAV
319 DavNamespaces = NewHash(1, NULL);
324 ServerShutdownModule_DAV
327 DeleteHash(&DavNamespaces);
335 RegisterDAVNamespace(HKEY("groupdav"), HKEY("GroupDAV"),
336 dav_main, GroupdavDispatchREST,
337 XHTTP_COMMANDS|COOKIEUNNEEDED|FORCE_SESSIONCLOSE
340 RegisterNamespace("DAV:HOSTNAME", 0, 0, tmplput_dav_HOSTNAME, NULL, CTX_NONE);
342 RegisterConditional(HKEY("COND:DAV:NS"), 0, Conditional_DAV_NS, CTX_NONE);
344 RegisterIterator("DAV:NS", 0, DavNamespaces, NULL,
345 NULL, NULL, CTX_DAVNS, CTX_NONE, IT_NOFLAG
348 RegisterConditional(HKEY("COND:DAV:NSCURRENT"), 0, Conditional_DAV_NSCURRENT, CTX_DAVNS);
349 RegisterNamespace("DAV:NAMESPACE", 0, 1, tmplput_DAV_NAMESPACE, NULL, CTX_NONE);
351 RegisterHeaderHandler(HKEY("IF-MATCH"), Header_HandleIfMatch);
352 RegisterHeaderHandler(HKEY("DEPTH"), Header_HandleDepth);
353 RegisterConditional(HKEY("COND:DAV:DEPTH"), 1, Conditional_DAV_DEPTH, CTX_NONE);