*
* Handles GroupDAV PROPFIND requests.
*
+ * A few notes about our XML output:
+ *
+ * --> Yes, we are spewing tags directly instead of using an XML library.
+ * If you would like to rewrite this using libxml2, code it up and submit
+ * a patch. Whining will be summarily ignored.
+ *
+ * --> XML is deliberately output with no whitespace/newlines between tags.
+ * This makes it difficult to read, but we have discovered clients which
+ * crash when you try to pretty it up.
+ *
*/
-#include <ctype.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <stdio.h>
-#include <fcntl.h>
-#include <signal.h>
-#include <sys/types.h>
-#include <sys/wait.h>
-#include <sys/socket.h>
-#include <limits.h>
-#include <string.h>
-#include <pwd.h>
-#include <errno.h>
-#include <stdarg.h>
-#include <time.h>
-#include <pthread.h>
#include "webcit.h"
#include "webserver.h"
#include "groupdav.h"
+/*
+ * Given an encoded UID, translate that to an unencoded Citadel EUID and
+ * then search for it in the current room. Return a message number or -1
+ * if not found.
+ *
+ */
+long locate_message_by_uid(const char *uid) {
+ char buf[256];
+ char decoded_uid[1024];
+ long retval = (-1L);
+
+ /* decode the UID */
+ euid_unescapize(decoded_uid, uid);
+
+ /* ask Citadel if we have this one */
+ serv_printf("EUID %s", decoded_uid);
+ serv_getln(buf, sizeof buf);
+ if (buf[0] == '2') {
+ retval = atol(&buf[4]);
+ }
+
+ return(retval);
+}
+
+
+
+/*
+ * List rooms (or "collections" in DAV terminology) which contain
+ * interesting groupware objects.
+ */
+void groupdav_collection_list(const char *dav_pathname, int dav_depth)
+{
+ char buf[256];
+ char roomname[256];
+ int view;
+ char datestring[256];
+ time_t now;
+ time_t mtime;
+ int is_groupware_collection = 0;
+ int starting_point = 1; /**< 0 for /, 1 for /groupdav/ */
+
+ if (!strcmp(dav_pathname, "/")) {
+ starting_point = 0;
+ }
+ else if (!strcasecmp(dav_pathname, "/groupdav")) {
+ starting_point = 1;
+ }
+ else if (!strcasecmp(dav_pathname, "/groupdav/")) {
+ starting_point = 1;
+ }
+ else if ( (!strncasecmp(dav_pathname, "/groupdav/", 10)) && (strlen(dav_pathname) > 10) ) {
+ starting_point = 2;
+ }
+
+ now = time(NULL);
+ http_datestring(datestring, sizeof datestring, now);
+
+ /**
+ * Be rude. Completely ignore the XML request and simply send them
+ * everything we know about. Let the client sort it out.
+ */
+ hprintf("HTTP/1.0 207 Multi-Status\r\n");
+ groupdav_common_headers();
+ hprintf("Date: %s\r\n", datestring);
+ hprintf("Content-type: text/xml\r\n");
+ hprintf("Content-encoding: identity\r\n");
+
+ begin_burst();
+
+ wprintf("<?xml version=\"1.0\" encoding=\"utf-8\"?>"
+ "<multistatus xmlns=\"DAV:\" xmlns:G=\"http://groupdav.org/\">"
+ );
+
+ /**
+ * If the client is requesting the root, show a root node.
+ */
+ if (starting_point == 0) {
+ wprintf("<response>");
+ wprintf("<href>");
+ groupdav_identify_host();
+ wprintf("/");
+ wprintf("</href>");
+ wprintf("<propstat>");
+ wprintf("<status>HTTP/1.1 200 OK</status>");
+ wprintf("<prop>");
+ wprintf("<displayname>/</displayname>");
+ wprintf("<resourcetype><collection/></resourcetype>");
+ wprintf("<getlastmodified>");
+ escputs(datestring);
+ wprintf("</getlastmodified>");
+ wprintf("</prop>");
+ wprintf("</propstat>");
+ wprintf("</response>");
+ }
+
+ /**
+ * If the client is requesting "/groupdav", show a /groupdav subdirectory.
+ */
+ if ((starting_point + dav_depth) >= 1) {
+ wprintf("<response>");
+ wprintf("<href>");
+ groupdav_identify_host();
+ wprintf("/groupdav");
+ wprintf("</href>");
+ wprintf("<propstat>");
+ wprintf("<status>HTTP/1.1 200 OK</status>");
+ wprintf("<prop>");
+ wprintf("<displayname>GroupDAV</displayname>");
+ wprintf("<resourcetype><collection/></resourcetype>");
+ wprintf("<getlastmodified>");
+ escputs(datestring);
+ wprintf("</getlastmodified>");
+ wprintf("</prop>");
+ wprintf("</propstat>");
+ wprintf("</response>");
+ }
+
+ /**
+ * Now go through the list and make it look like a DAV collection
+ */
+ serv_puts("LKRA");
+ serv_getln(buf, sizeof buf);
+ if (buf[0] == '1') while (serv_getln(buf, sizeof buf), strcmp(buf, "000")) {
+
+ extract_token(roomname, buf, 0, '|', sizeof roomname);
+ view = extract_int(buf, 7);
+ mtime = extract_long(buf, 8);
+ http_datestring(datestring, sizeof datestring, mtime);
+
+ /*
+ * For now, only list rooms that we know a GroupDAV client
+ * might be interested in. In the future we may add
+ * the rest.
+ *
+ * We determine the type of objects which are stored in each
+ * room by looking at the *default* view for the room. This
+ * allows, for example, a Calendar room to appear as a
+ * GroupDAV calendar even if the user has switched it to a
+ * Calendar List view.
+ */
+ if ((view == VIEW_CALENDAR) || (view == VIEW_TASKS) || (view == VIEW_ADDRESSBOOK) ) {
+ is_groupware_collection = 1;
+ }
+ else {
+ is_groupware_collection = 0;
+ }
+
+ if ( (is_groupware_collection) && ((starting_point + dav_depth) >= 2) ) {
+ wprintf("<response>");
+
+ wprintf("<href>");
+ groupdav_identify_host();
+ wprintf("/groupdav/");
+ urlescputs(roomname);
+ wprintf("/</href>");
+
+ wprintf("<propstat>");
+ wprintf("<status>HTTP/1.1 200 OK</status>");
+ wprintf("<prop>");
+ wprintf("<displayname>");
+ escputs(roomname);
+ wprintf("</displayname>");
+ wprintf("<resourcetype><collection/>");
+
+ switch(view) {
+ case VIEW_CALENDAR:
+ wprintf("<G:vevent-collection />");
+ break;
+ case VIEW_TASKS:
+ wprintf("<G:vtodo-collection />");
+ break;
+ case VIEW_ADDRESSBOOK:
+ wprintf("<G:vcard-collection />");
+ break;
+ }
+
+ wprintf("</resourcetype>");
+ wprintf("<getlastmodified>");
+ escputs(datestring);
+ wprintf("</getlastmodified>");
+ wprintf("</prop>");
+ wprintf("</propstat>");
+ wprintf("</response>");
+ }
+ }
+ wprintf("</multistatus>\n");
+
+ end_burst();
+}
+
+
/*
* The pathname is always going to be /groupdav/room_name/msg_num
*/
-void groupdav_propfind(char *dav_pathname) {
- char dav_roomname[SIZ];
- char buf[SIZ];
+void groupdav_propfind(StrBuf *dav_pathname, int dav_depth, StrBuf *dav_content_type, StrBuf *dav_content, int offset) {
+ StrBuf *dav_roomname;
+ StrBuf *dav_uid;
+ StrBuf *MsgNum;
+ long BufLen;
+ long dav_msgnum = (-1);
+ char uid[256];
+ char encoded_uid[256];
+ long *msgs = NULL;
+ int num_msgs = 0;
+ int i;
+ char datestring[256];
+ time_t now;
- /* First, break off the "/groupdav/" prefix */
- remove_token(dav_pathname, 0, '/');
- remove_token(dav_pathname, 0, '/');
+ now = time(NULL);
+ http_datestring(datestring, sizeof datestring, now);
- /* What's left is the room name. Remove trailing slashes. */
- if (dav_pathname[strlen(dav_pathname)-1] == '/') {
- dav_pathname[strlen(dav_pathname)-1] = 0;
+ dav_roomname = NewStrBuf();
+ dav_uid = NewStrBuf();
+ StrBufExtract_token(dav_roomname, dav_pathname, 2, '/');
+ StrBufExtract_token(dav_uid, dav_pathname, 3, '/');
+
+ /*
+ * If the room name is blank, the client is requesting a
+ * folder list.
+ */
+ if (StrLength(dav_roomname) == 0) {
+ groupdav_collection_list(ChrPtr(dav_pathname), dav_depth);
+ FreeStrBuf(&dav_roomname);
+ FreeStrBuf(&dav_uid);
+ return;
}
- strcpy(dav_roomname, dav_pathname);
/* Go to the correct room. */
- if (strcasecmp(WC->wc_roomname, dav_roomname)) {
+ if (strcasecmp(ChrPtr(WC->wc_roomname), ChrPtr(dav_roomname))) {
gotoroom(dav_roomname);
}
- if (strcasecmp(WC->wc_roomname, dav_roomname)) {
- wprintf("HTTP/1.1 404 not found\n");
+ if (strcasecmp(ChrPtr(WC->wc_roomname), ChrPtr(dav_roomname))) {
+ hprintf("HTTP/1.1 404 not found\r\n");
+ groupdav_common_headers();
+ hprintf("Date: %s\r\n", datestring);
+ hprintf("Content-Type: text/plain\r\n");
+ wprintf("There is no folder called \"%s\" on this server.\r\n",
+ ChrPtr(dav_roomname)
+ );
+ end_burst();
+ FreeStrBuf(&dav_roomname);
+ FreeStrBuf(&dav_uid);
+ return;
+ }
+
+ /* If dav_uid is non-empty, client is requesting a PROPFIND on
+ * a specific item in the room. This is not valid GroupDAV, but
+ * it is valid WebDAV.
+ */
+ if (StrLength(dav_uid) != 0) {
+
+ dav_msgnum = locate_message_by_uid(ChrPtr(dav_uid));
+ if (dav_msgnum < 0) {
+ hprintf("HTTP/1.1 404 not found\r\n");
+ groupdav_common_headers();
+ hprintf("Content-Type: text/plain\r\n");
+ wprintf("Object \"%s\" was not found in the \"%s\" folder.\r\n",
+ ChrPtr(dav_uid),
+ ChrPtr(dav_roomname)
+ );
+ end_burst();
+ FreeStrBuf(&dav_roomname);
+ FreeStrBuf(&dav_uid);
+ return;
+ }
+
+ /* Be rude. Completely ignore the XML request and simply send them
+ * everything we know about (which is going to simply be the ETag and
+ * nothing else). Let the client-side parser sort it out.
+ */
+ hprintf("HTTP/1.0 207 Multi-Status\r\n");
groupdav_common_headers();
- wprintf(
- "Content-Type: text/plain\n"
- "\n"
- "There is no folder called \"%s\" on this server.\n",
- dav_roomname
+ hprintf("Date: %s\r\n", datestring);
+ hprintf("Content-type: text/xml\r\n");
+ hprintf("Content-encoding: identity\r\n");
+
+ begin_burst();
+
+ wprintf("<?xml version=\"1.0\" encoding=\"utf-8\"?>"
+ "<multistatus xmlns=\"DAV:\">"
);
+
+ wprintf("<response>");
+
+ wprintf("<href>");
+ groupdav_identify_host();
+ wprintf("/groupdav/");
+ urlescputs(ChrPtr(WC->wc_roomname));
+ euid_escapize(encoded_uid, ChrPtr(dav_uid));
+ wprintf("/%s", encoded_uid);
+ wprintf("</href>");
+ wprintf("<propstat>");
+ wprintf("<status>HTTP/1.1 200 OK</status>");
+ wprintf("<prop>");
+ wprintf("<getetag>\"%ld\"</getetag>", dav_msgnum);
+ wprintf("<getlastmodified>");
+ escputs(datestring);
+ wprintf("</getlastmodified>");
+ wprintf("</prop>");
+ wprintf("</propstat>");
+
+ wprintf("</response>\n");
+ wprintf("</multistatus>\n");
+ end_burst();
+ FreeStrBuf(&dav_roomname);
+ FreeStrBuf(&dav_uid);
return;
}
+ FreeStrBuf(&dav_roomname);
+ FreeStrBuf(&dav_uid);
+
/*
+ * We got to this point, which means that the client is requesting
+ * a 'collection' (i.e. a list of all items in the room).
+ *
* Be rude. Completely ignore the XML request and simply send them
* everything we know about (which is going to simply be the ETag and
* nothing else). Let the client-side parser sort it out.
*/
- wprintf("HTTP/1.0 207 Multi-Status\n");
+ hprintf("HTTP/1.0 207 Multi-Status\r\n");
groupdav_common_headers();
- wprintf("Content-type: text/xml\n"
- "\n"
- "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n"
- "<D:multistatus xmlns:D=\"DAV:\">\n"
+ hprintf("Date: %s\r\n", datestring);
+ hprintf("Content-type: text/xml\r\n");
+ hprintf("Content-encoding: identity\r\n");
+
+ begin_burst();
+
+ wprintf("<?xml version=\"1.0\" encoding=\"utf-8\"?>"
+ "<multistatus xmlns=\"DAV:\" xmlns:G=\"http://groupdav.org/\">"
);
+
+ /** Transmit the collection resource (FIXME check depth and starting point) */
+ wprintf("<response>");
+
+ wprintf("<href>");
+ groupdav_identify_host();
+ wprintf("/groupdav/");
+ urlescputs(ChrPtr(WC->wc_roomname));
+ wprintf("</href>");
+
+ wprintf("<propstat>");
+ wprintf("<status>HTTP/1.1 200 OK</status>");
+ wprintf("<prop>");
+ wprintf("<displayname>");
+ escputs(ChrPtr(WC->wc_roomname));
+ wprintf("</displayname>");
+ wprintf("<resourcetype><collection/>");
+
+ switch(WC->wc_default_view) {
+ case VIEW_CALENDAR:
+ wprintf("<G:vevent-collection />");
+ break;
+ case VIEW_TASKS:
+ wprintf("<G:vtodo-collection />");
+ break;
+ case VIEW_ADDRESSBOOK:
+ wprintf("<G:vcard-collection />");
+ break;
+ }
+
+ wprintf("</resourcetype>");
+ /* FIXME get the mtime
+ wprintf("<getlastmodified>");
+ escputs(datestring);
+ wprintf("</getlastmodified>");
+ */
+ wprintf("</prop>");
+ wprintf("</propstat>");
+ wprintf("</response>");
+
+ /** Transmit the collection listing (FIXME check depth and starting point) */
+
+ MsgNum = NewStrBuf ();
serv_puts("MSGS ALL");
- serv_gets(buf);
- if (buf[0] == '1') while (serv_gets(buf), strcmp(buf, "000")) {
- wprintf(" <D:response>\n");
- wprintf(" <D:href>%s://%s/groupdav/Calendar/%s</D:href>\n",
- (is_https ? "https" : "http"),
- WC->http_host,
- buf
- );
- wprintf(" <D:propstat>\n");
- wprintf(" <D:status>HTTP/1.1 200 OK</D:status>\n");
- wprintf(" <D:prop><D:getetag>\"%s\"</D:getetag></D:prop>\n", buf);
- wprintf(" </D:propstat>\n");
- wprintf(" </D:response>\n");
+
+ StrBuf_ServGetln(MsgNum);
+ if (GetServerStatus(MsgNum, NULL) == 1)
+ while (BufLen = StrBuf_ServGetln(MsgNum), strcmp(ChrPtr(MsgNum), "000")) {
+ msgs = realloc(msgs, ++num_msgs * sizeof(long));
+ msgs[num_msgs-1] = StrTol(MsgNum);
+ }
+
+ if (num_msgs > 0) for (i=0; i<num_msgs; ++i) {
+
+ strcpy(uid, "");
+ now = (-1);
+ serv_printf("MSG0 %ld|3", msgs[i]);
+ StrBuf_ServGetln(MsgNum);
+ if (GetServerStatus(MsgNum, NULL) == 1)
+ while (BufLen = StrBuf_ServGetln(MsgNum), strcmp(ChrPtr(MsgNum), "000"))
+ {
+ if (!strncasecmp(ChrPtr(MsgNum), "exti=", 5)) {
+ strcpy(uid, &ChrPtr(MsgNum)[5]);
+ }
+ else if (!strncasecmp(ChrPtr(MsgNum), "time=", 5)) {
+ now = atol(&ChrPtr(MsgNum)[5]);
+ }
+ }
+
+ if (!IsEmptyStr(uid)) {
+ wprintf("<response>");
+ wprintf("<href>");
+ groupdav_identify_host();
+ wprintf("/groupdav/");
+ urlescputs(ChrPtr(WC->wc_roomname));
+ euid_escapize(encoded_uid, uid);
+ wprintf("/%s", encoded_uid);
+ wprintf("</href>");
+ switch(WC->wc_default_view) {
+ case VIEW_CALENDAR:
+ wprintf("<getcontenttype>text/x-ical</getcontenttype>");
+ break;
+ case VIEW_TASKS:
+ wprintf("<getcontenttype>text/x-ical</getcontenttype>");
+ break;
+ case VIEW_ADDRESSBOOK:
+ wprintf("<getcontenttype>text/x-vcard</getcontenttype>");
+ break;
+ }
+ wprintf("<propstat>");
+ wprintf("<status>HTTP/1.1 200 OK</status>");
+ wprintf("<prop>");
+ wprintf("<getetag>\"%ld\"</getetag>", msgs[i]);
+ if (now > 0L) {
+ http_datestring(datestring, sizeof datestring, now);
+ wprintf("<getlastmodified>");
+ escputs(datestring);
+ wprintf("</getlastmodified>");
+ }
+ wprintf("</prop>");
+ wprintf("</propstat>");
+ wprintf("</response>");
+ }
}
+ FreeStrBuf(&MsgNum);
- wprintf("</D:multistatus>\n");
+ wprintf("</multistatus>\n");
+ end_burst();
+
+ if (msgs != NULL) {
+ free(msgs);
+ }
}
projects / citadel.git / blobdiff