#include "locate_host.h"
#include "citadel_dirs.h"
#include "ctdl_module.h"
+#include "serv_nntp.h"
-
-
+extern long timezone;
/****************** BEGIN UTILITY FUNCTIONS THAT COULD BE MOVED ELSEWHERE LATER **************/
}
-void nntp_noop(void)
-{
- cprintf("250 NOOP\r\n");
-}
-
-
void nntp_capabilities(void)
{
cprintf("101 Capability list:\r\n");
+ cprintf("VERSION 2\r\n");
+ cprintf("READER\r\n");
+ cprintf("LIST ACTIVE NEWSGROUPS\r\n");
+ cprintf("IMPLEMENTATION Citadel v%d.%02d\r\n", (REV_LEVEL/100), (REV_LEVEL%100));
#ifdef HAVE_OPENSSL
cprintf("STARTTLS\r\n");
#endif
}
+/*
+ * Utility function to fetch the current list of message numbers in a room
+ */
+struct nntp_msglist nntp_fetch_msglist(struct ctdlroom *qrbuf) {
+ struct nntp_msglist nm;
+ struct cdbdata *cdbfr;
+
+ cdbfr = cdb_fetch(CDB_MSGLISTS, &qrbuf->QRnumber, sizeof(long));
+ if (cdbfr != NULL) {
+ nm.msgnums = (long*)cdbfr->ptr;
+ cdbfr->ptr = NULL;
+ nm.num_msgs = cdbfr->len / sizeof(long);
+ cdbfr->len = 0;
+ cdb_free(cdbfr);
+ } else {
+ nm.num_msgs = 0;
+ nm.msgnums = NULL;
+ }
+ return(nm);
+}
+
+
+/*
+ * Various output formats for the LIST commands
+ */
+enum {
+ NNTP_LIST_ACTIVE,
+ NNTP_LIST_ACTIVE_TIMES,
+ NNTP_LIST_DISTRIB_PATS,
+ NNTP_LIST_HEADERS,
+ NNTP_LIST_NEWSGROUPS,
+ NNTP_LIST_OVERVIEW_FMT
+};
-/*
+/*
+ * Output a room name (newsgroup name) in formats required for LIST and NEWGROUPS command
+ */
+void output_roomname_in_list_format(struct ctdlroom *qrbuf, int which_format, char *wildmat_pattern) {
+ char n_name[1024];
+ struct nntp_msglist nm;
+ long low_water_mark = 0;
+ long high_water_mark = 0;
+
+ room_to_newsgroup(n_name, qrbuf->QRname, sizeof n_name);
+
+ if ((wildmat_pattern != NULL) && (!IsEmptyStr(wildmat_pattern))) {
+ if (!wildmat(n_name, wildmat_pattern)) {
+ return;
+ }
+ }
+
+ nm = nntp_fetch_msglist(qrbuf);
+ if ((nm.num_msgs > 0) && (nm.msgnums != NULL)) {
+ low_water_mark = nm.msgnums[0];
+ high_water_mark = nm.msgnums[nm.num_msgs - 1];
+ }
+
+ // Only the mandatory formats are supported
+ switch(which_format) {
+ case NNTP_LIST_ACTIVE:
+ // FIXME we have hardcoded "n" for "no posting allowed" -- fix when we add posting
+ cprintf("%s %ld %ld n\r\n", n_name, high_water_mark, low_water_mark);
+ break;
+ case NNTP_LIST_NEWSGROUPS:
+ cprintf("%s %s\r\n", n_name, qrbuf->QRname);
+ break;
+ }
+
+ if (nm.msgnums != NULL) {
+ free(nm.msgnums);
+ }
+}
+
+
+
+/*
+ * Called once per room by nntp_newgroups() to qualify and possibly output a single room
*/
void nntp_newgroups_backend(struct ctdlroom *qrbuf, void *data)
{
int ra;
int view;
+ time_t thetime = *(time_t *)data;
CtdlRoomAccess(qrbuf, &CC->user, &ra, &view);
+ /*
+ * The "created after <date/time>" heuristics depend on the happy coincidence
+ * that for a very long time we have used a unix timestamp as the room record's
+ * generation number (QRgen). When this module is merged into the master
+ * source tree we should rename QRgen to QR_create_time or something like that.
+ */
+
if (ra & UA_KNOWN) {
- char n_name[1024];
- room_to_newsgroup(n_name, qrbuf->QRname, sizeof n_name);
- cprintf("%s\r\n", n_name);
+ if (qrbuf->QRgen >= thetime) {
+ output_roomname_in_list_format(qrbuf, NNTP_LIST_ACTIVE, NULL);
+ }
}
}
+
/*
- * Implements the NEWGROUPS command (FIXME not finished)
+ * Implements the NEWGROUPS command
*/
void nntp_newgroups(const char *cmd) {
/*
- * HACK: this works because the 5XX series error codes from citadeli
+ * HACK: this works because the 5XX series error codes from citadel
* protocol will also be considered error codes by an NNTP client
*/
if (CtdlAccessCheck(ac_logged_in_or_guest)) return;
- cprintf("231 imma show you everything FIXME\r\n");
+
+ char stringy_date[16];
+ char stringy_time[16];
+ char stringy_gmt[16];
+ struct tm tm;
+ time_t thetime;
+
+ extract_token(stringy_date, cmd, 1, ' ', sizeof stringy_date);
+ extract_token(stringy_time, cmd, 2, ' ', sizeof stringy_time);
+ extract_token(stringy_gmt, cmd, 3, ' ', sizeof stringy_gmt);
+
+ memset(&tm, 0, sizeof tm);
+ if (strlen(stringy_date) == 6) {
+ sscanf(stringy_date, "%2d%2d%2d", &tm.tm_year, &tm.tm_mon, &tm.tm_mday);
+ tm.tm_year += 100;
+ }
+ else {
+ sscanf(stringy_date, "%4d%2d%2d", &tm.tm_year, &tm.tm_mon, &tm.tm_mday);
+ tm.tm_year -= 1900;
+ }
+ tm.tm_mon -= 1; // tm_mon is zero based (0=January)
+ tm.tm_isdst = (-1); // let the C library figure out whether DST is in effect
+ sscanf(stringy_time, "%2d%2d%2d", &tm.tm_hour, &tm.tm_min ,&tm.tm_sec);
+ thetime = mktime(&tm);
+ if (!strcasecmp(stringy_gmt, "GMT")) {
+ tzset();
+ thetime += timezone;
+ }
+
+
+ cprintf("231 list of new newsgroups follows\r\n");
CtdlGetUser(&CC->user, CC->curr_user);
- cprintf("%d Rooms w/o new msgs:\n", LISTING_FOLLOWS);
- CtdlForEachRoom(nntp_newgroups_backend, NULL);
+ CtdlForEachRoom(nntp_newgroups_backend, &thetime);
cprintf(".\r\n");
}
+/*
+ * Called once per room by nntp_list() to qualify and possibly output a single room
+ */
+void nntp_list_backend(struct ctdlroom *qrbuf, void *data)
+{
+ int ra;
+ int view;
+ struct nntp_list_data *nld = (struct nntp_list_data *)data;
+
+ CtdlRoomAccess(qrbuf, &CC->user, &ra, &view);
+ if (ra & UA_KNOWN) {
+ output_roomname_in_list_format(qrbuf, nld->list_format, nld->wildmat_pattern);
+ }
+}
+
+
+/*
+ * Implements the LIST commands
+ */
+void nntp_list(const char *cmd) {
+ /*
+ * HACK: this works because the 5XX series error codes from citadel
+ * protocol will also be considered error codes by an NNTP client
+ */
+ if (CtdlAccessCheck(ac_logged_in_or_guest)) return;
+
+ char list_format[64];
+ char wildmat_pattern[1024];
+ struct nntp_list_data nld;
+
+ extract_token(list_format, cmd, 1, ' ', sizeof list_format);
+ extract_token(wildmat_pattern, cmd, 2, ' ', sizeof wildmat_pattern);
+
+ if (strlen(wildmat_pattern) > 0) {
+ nld.wildmat_pattern = wildmat_pattern;
+ }
+ else {
+ nld.wildmat_pattern = NULL;
+ }
+
+ if ( (strlen(cmd) < 6) || (!strcasecmp(list_format, "ACTIVE")) ) {
+ nld.list_format = NNTP_LIST_ACTIVE;
+ }
+ else if (!strcasecmp(list_format, "NEWSGROUPS")) {
+ nld.list_format = NNTP_LIST_NEWSGROUPS;
+ }
+ else {
+ cprintf("501 syntax error , unsupported list format\r\n");
+ return;
+ }
+
+ cprintf("231 list of newsgroups follows\r\n");
+ CtdlGetUser(&CC->user, CC->curr_user);
+ CtdlForEachRoom(nntp_list_backend, &nld);
+ cprintf(".\r\n");
+}
+
+
+/*
+ * Implement HELP command.
+ */
+void nntp_help(void) {
+ cprintf("100 This is the Citadel NNTP service.\r\n");
+ cprintf("RTFM http://www.ietf.org/rfc/rfc3977.txt\r\n");
+ cprintf(".\r\n");
+}
+
+
+/*
+ * Implements the GROUP command
+ */
+void nntp_group(const char *cmd) {
+ /*
+ * HACK: this works because the 5XX series error codes from citadel
+ * protocol will also be considered error codes by an NNTP client
+ */
+ if (CtdlAccessCheck(ac_logged_in_or_guest)) return;
+
+ char requested_group[1024];
+ char requested_room[ROOMNAMELEN];
+ char augmented_roomname[ROOMNAMELEN];
+ int c = 0;
+ int ok = 0;
+ int ra = 0;
+ struct ctdlroom QRscratch;
+ int msgs, new;
+ long oldest,newest;
+
+ extract_token(requested_group, cmd, 1, ' ', sizeof requested_group);
+ newsgroup_to_room(requested_room, requested_group, sizeof requested_room);
+
+ /* First try a regular match */
+ c = CtdlGetRoom(&QRscratch, requested_room);
+
+ /* Then try a mailbox name match */
+ if (c != 0) {
+ CtdlMailboxName(augmented_roomname, sizeof augmented_roomname, &CC->user, requested_room);
+ c = CtdlGetRoom(&QRscratch, augmented_roomname);
+ if (c == 0) {
+ safestrncpy(requested_room, augmented_roomname, sizeof(requested_room));
+ }
+ }
+
+ /* If the room exists, check security/access */
+ if (c == 0) {
+ /* See if there is an existing user/room relationship */
+ CtdlRoomAccess(&QRscratch, &CC->user, &ra, NULL);
+
+ /* normal clients have to pass through security */
+ if (ra & UA_KNOWN) {
+ ok = 1;
+ }
+ }
+
+ /* Fail here if no such room */
+ if (!ok) {
+ cprintf("411 no such newsgroup\r\n");
+ return;
+ }
+
+
+ /*
+ * CtdlUserGoto() formally takes us to the desired room, happily returning
+ * the number of messages and number of new messages.
+ */
+ memcpy(&CC->room, &QRscratch, sizeof(struct ctdlroom));
+ CtdlUserGoto(NULL, 0, 0, &msgs, &new, &oldest, &newest);
+ cprintf("211 %d %ld %ld %s\r\n", msgs, oldest, newest, requested_group);
+}
+
+
/*
* Main command loop for NNTP server sessions.
*/
nntp_quit();
}
+ else if (!strcasecmp(cmdname, "help")) {
+ nntp_help();
+ }
+
else if (!strcasecmp(cmdname, "capabilities")) {
nntp_capabilities();
}
nntp_starttls();
}
- else if (!strcasecmp(cmdname, "noop")) {
- nntp_noop();
- }
-
else if (!strcasecmp(cmdname, "authinfo")) {
nntp_authinfo(ChrPtr(Cmd));
}
nntp_newgroups(ChrPtr(Cmd));
}
+ else if (!strcasecmp(cmdname, "list")) {
+ nntp_list(ChrPtr(Cmd));
+ }
+
+ else if (!strcasecmp(cmdname, "group")) {
+ nntp_group(ChrPtr(Cmd));
+ }
+
else {
cprintf("500 I'm afraid I can't do that.\r\n");
}
/* return our module name for the log */
return "nntp";
}
+
+
+
+
+
+
projects / citadel.git / blobdiff