X-Git-Url: https://code.citadel.org/?a=blobdiff_plain;f=webcit%2Fdav_main.c;fp=webcit%2Fdav_main.c;h=31cbfafffe1399af58ecc6876a1404b7515c2374;hb=8611acef7ff4213c28ad20ff755d34509870bc96;hp=0000000000000000000000000000000000000000;hpb=76a0f8571de023fe6bd20390174a2302e0a0b982;p=citadel.git

diff --git a/webcit/dav_main.c b/webcit/dav_main.c
new file mode 100644
index 000000000..31cbfafff
--- /dev/null
+++ b/webcit/dav_main.c
@@ -0,0 +1,357 @@
+/*
+ * Entry point for GroupDAV functions
+ *
+ * Copyright (c) 2005-2012 by the citadel.org team
+ *
+ * This program is open source software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include "webcit.h"
+#include "webserver.h"
+#include "dav.h"
+
+CtxType CTX_DAVNS = CTX_NONE;
+extern HashList *HandlerHash;
+
+HashList *DavNamespaces = NULL;
+
+/*
+ * Output HTTP headers which are common to all requests.
+ *
+ * Please observe that we don't use the usual output_headers()
+ * and wDumpContent() functions in the GroupDAV subsystem, so we
+ * do our own header stuff here.
+ *
+ */
+void dav_common_headers(void) {
+	hprintf(
+		"Server: %s / %s\r\n"
+		"Connection: close\r\n",
+		PACKAGE_STRING, ChrPtr(WC->serv_info->serv_software)
+	);
+}
+
+
+
+/*
+ * string conversion function
+ */
+void euid_escapize(char *target, const char *source) {
+	int i, len;
+	int target_length = 0;
+
+	strcpy(target, "");
+	len = strlen(source);
+	for (i=0; i<len; ++i) {
+		if ( (isalnum(source[i])) || (source[i]=='-') || (source[i]=='_') ) {
+			target[target_length] = source[i];
+			target[++target_length] = 0;
+		}
+		else {
+			sprintf(&target[target_length], "=%02X", (0xFF & source[i]));
+			target_length += 3;
+		}
+	}
+}
+
+/*
+ * string conversion function
+ */
+void euid_unescapize(char *target, const char *source) {
+	int a, b, len;
+	char hex[3];
+	int target_length = 0;
+
+	strcpy(target, "");
+
+	len = strlen(source);
+	for (a = 0; a < len; ++a) {
+		if (source[a] == '=') {
+			hex[0] = source[a + 1];
+			hex[1] = source[a + 2];
+			hex[2] = 0;
+			b = 0;
+			b = decode_hex(hex);
+			target[target_length] = b;
+			target[++target_length] = 0;
+			a += 2;
+		}
+		else {
+			target[target_length] = source[a];
+			target[++target_length] = 0;
+		}
+	}
+}
+
+
+
+
+/*
+ * Main entry point for GroupDAV requests
+ */
+void dav_main(void)
+{
+	wcsession *WCC = WC;
+	int i, len;
+
+	syslog(LOG_DEBUG, "dav_main() called, logged_in=%d", WCC->logged_in );
+
+	StrBufUnescape(WCC->Hdr->HR.ReqLine, 0);
+	StrBufStripSlashes(WCC->Hdr->HR.ReqLine, 0);
+
+	/*
+	 * If there's an If-Match: header, strip out the quotes if present, and
+	 * then if all that's left is an asterisk, make it go away entirely.
+	 */
+	len = StrLength(WCC->Hdr->HR.dav_ifmatch);
+	if (len > 0) {
+		StrBufTrim(WCC->Hdr->HR.dav_ifmatch);
+		if (ChrPtr(WCC->Hdr->HR.dav_ifmatch)[0] == '\"') {
+			StrBufCutLeft(WCC->Hdr->HR.dav_ifmatch, 1);
+			len --;
+			for (i=0; i<len; ++i) {
+				if (ChrPtr(WCC->Hdr->HR.dav_ifmatch)[i] == '\"') {
+					StrBufCutAt(WCC->Hdr->HR.dav_ifmatch, i, NULL);
+					len = StrLength(WCC->Hdr->HR.dav_ifmatch);
+				}
+			}
+		}
+		if (!strcmp(ChrPtr(WCC->Hdr->HR.dav_ifmatch), "*")) {
+			FlushStrBuf(WCC->Hdr->HR.dav_ifmatch);
+		}
+	}
+
+	switch (WCC->Hdr->HR.eReqType)
+	{
+	/*
+	 * The OPTIONS method is not required by GroupDAV but it will be
+	 * needed for future implementations of other DAV-based protocols.
+	 */
+	case eOPTIONS:
+		dav_options();
+		break;
+
+	/*
+	 * The PROPFIND method is basically used to list all objects in a
+	 * room, or to list all relevant rooms on the server.
+	 */
+	case ePROPFIND:
+		dav_propfind();
+		break;
+
+	/*
+	 * The GET method is used for fetching individual items.
+	 */
+	case eGET:
+		dav_get();
+		break;
+	
+	/*
+	 * The PUT method is used to add or modify items.
+	 */
+	case ePUT:
+		dav_put();
+		break;
+	
+	/*
+	 * The DELETE method kills, maims, and destroys.
+	 */
+	case eDELETE:
+		dav_delete();
+		break;
+
+	/*
+	 * The REPORT method tells us that Mike Shaver is a self-righteous asshole.
+	 */
+	case eREPORT:
+		dav_report();
+		break;
+
+	default:
+	/*
+	 * Couldn't find what we were looking for.  Die in a car fire.
+	 */
+		hprintf("HTTP/1.1 501 Method not implemented\r\n");
+		dav_common_headers();
+		hprintf("Content-Type: text/plain\r\n");
+		wc_printf("GroupDAV method \"%s\" is not implemented.\r\n",
+			ReqStrs[WCC->Hdr->HR.eReqType]);
+		end_burst();
+	}
+}
+
+
+/*
+ * Output our host prefix for globally absolute URL's.
+ */  
+void dav_identify_host(void) {
+	wc_printf("%s", ChrPtr(site_prefix));
+}
+
+
+void tmplput_dav_HOSTNAME(StrBuf *Target, WCTemplputParams *TP) 
+{
+	StrBufAppendPrintf(Target, "%s", ChrPtr(site_prefix));
+}
+
+/*
+ * Output our host prefix for globally absolute URL's.
+ */  
+void dav_identify_hosthdr(void) {
+	hprintf("%s", ChrPtr(site_prefix));
+}
+
+
+void Header_HandleIfMatch(StrBuf *Line, ParsedHttpHdrs *hdr)
+{
+	hdr->HR.dav_ifmatch = Line;
+}
+	
+
+void Header_HandleDepth(StrBuf *Line, ParsedHttpHdrs *hdr)
+{
+	if (!strcasecmp(ChrPtr(Line), "infinity")) {
+		hdr->HR.dav_depth = 32767;
+	}
+	else if (strcmp(ChrPtr(Line), "0") == 0) {
+		hdr->HR.dav_depth = 0;
+	}
+	else if (strcmp(ChrPtr(Line), "1") == 0) {
+		hdr->HR.dav_depth = 1;
+	}
+}
+
+
+int Conditional_DAV_DEPTH(StrBuf *Target, WCTemplputParams *TP)
+{
+	return WC->Hdr->HR.dav_depth == GetTemplateTokenNumber(Target, TP, 2, 0);
+}
+
+
+void RegisterDAVNamespace(const char * UrlString, 
+			  long UrlSLen, 
+			  const char *DisplayName, 
+			  long dslen, 
+			  WebcitHandlerFunc F, 
+			  WebcitRESTDispatchID RID,
+			  long Flags)
+{
+	void *vHandler;
+
+	/* first put it in... */
+	WebcitAddUrlHandler(UrlString, UrlSLen, DisplayName, dslen, F, Flags|PARSE_REST_URL);
+	/* get it out again... */
+	GetHash(HandlerHash, UrlString, UrlSLen, &vHandler);
+	((WebcitHandler*)vHandler)->RID = RID;
+	/* and keep a copy of it, so we can compare it later */
+	Put(DavNamespaces, UrlString, UrlSLen, vHandler, reference_free_handler);
+}
+
+
+int Conditional_DAV_NS(StrBuf *Target, WCTemplputParams *TP)
+{
+	wcsession *WCC = WC;
+	void *vHandler;
+	const char *NS;
+	long NSLen;
+
+	GetTemplateTokenString(NULL, TP, 2, &NS, &NSLen);
+	GetHash(HandlerHash, NS, NSLen, &vHandler);
+	return WCC->Hdr->HR.Handler == vHandler;
+}
+
+
+int Conditional_DAV_NSCURRENT(StrBuf *Target, WCTemplputParams *TP)
+{
+	wcsession *WCC = WC;
+	void *vHandler;
+
+	vHandler = CTX(CTX_NONE);
+	return WCC->Hdr->HR.Handler == vHandler;
+}
+
+
+void tmplput_DAV_NAMESPACE(StrBuf *Target, WCTemplputParams *TP)
+{
+	wcsession *WCC = WC;
+
+	if (TP->Filter.ContextType == CTX_DAVNS) {
+		WebcitHandler *H;
+		H = (WebcitHandler*) CTX(CTX_DAVNS);
+		if (H != NULL)
+			StrBufAppendTemplate(Target, TP, H->Name, 0);
+	}
+	else if (WCC->Hdr->HR.Handler != NULL) {
+		StrBufAppendTemplate(Target, TP, WCC->Hdr->HR.Handler->Name, 0);
+	}
+}
+
+
+int GroupdavDispatchREST(RESTDispatchID WhichAction, int IgnoreFloor)
+{
+	wcsession *WCC = WC;
+	void *vDir;
+	
+	switch(WhichAction){
+	case ExistsID:
+		GetHash(WCC->Directory, IKEY(WCC->ThisRoom->nRoomNameParts + 1), &vDir);
+		return locate_message_by_uid(ChrPtr((StrBuf*)vDir)) != -1;
+		/* TODO: remember euid */
+	case PutID:
+	case DeleteID:
+		break;
+
+
+	}
+	return 0;
+}
+
+
+void
+ServerStartModule_DAV
+(void)
+{
+
+	DavNamespaces = NewHash(1, NULL);
+}
+
+
+void 
+ServerShutdownModule_DAV
+(void)
+{
+	DeleteHash(&DavNamespaces);
+}
+
+
+void 
+InitModule_GROUPDAV
+(void)
+{
+	RegisterCTX(CTX_DAVNS);
+	RegisterDAVNamespace(HKEY("groupdav"), HKEY("GroupDAV"), 
+			     dav_main, GroupdavDispatchREST, 
+			     XHTTP_COMMANDS|COOKIEUNNEEDED|FORCE_SESSIONCLOSE
+	);
+
+	RegisterNamespace("DAV:HOSTNAME", 0, 0, tmplput_dav_HOSTNAME, NULL, CTX_NONE);
+
+	RegisterConditional("COND:DAV:NS", 0, Conditional_DAV_NS,  CTX_NONE);
+
+	RegisterIterator("DAV:NS", 0, DavNamespaces, NULL, 
+			 NULL, NULL, CTX_DAVNS, CTX_NONE, IT_NOFLAG
+	);
+
+	RegisterConditional("COND:DAV:NSCURRENT", 0, Conditional_DAV_NSCURRENT,  CTX_DAVNS);
+	RegisterNamespace("DAV:NAMESPACE", 0, 1, tmplput_DAV_NAMESPACE, NULL, CTX_NONE);
+
+	RegisterHeaderHandler(HKEY("IF-MATCH"), Header_HandleIfMatch);
+	RegisterHeaderHandler(HKEY("DEPTH"), Header_HandleDepth);
+	RegisterConditional("COND:DAV:DEPTH", 1, Conditional_DAV_DEPTH,  CTX_NONE);
+}