+++ /dev/null
-/*
- * NNTP server module FIXME THIS IS NOT FINISHED
- *
- * Copyright (c) 2014 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 "sysdep.h"
-#include <stdlib.h>
-#include <unistd.h>
-#include <stdio.h>
-#include <termios.h>
-#include <fcntl.h>
-#include <signal.h>
-#include <pwd.h>
-#include <errno.h>
-#include <sys/types.h>
-#include <syslog.h>
-
-#if TIME_WITH_SYS_TIME
-# include <sys/time.h>
-# include <time.h>
-#else
-# if HAVE_SYS_TIME_H
-# include <sys/time.h>
-# else
-# include <time.h>
-# endif
-#endif
-
-#include <sys/wait.h>
-#include <ctype.h>
-#include <string.h>
-#include <limits.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
-#include <arpa/inet.h>
-#include <libcitadel.h>
-#include "citadel.h"
-#include "server.h"
-#include "citserver.h"
-#include "support.h"
-#include "config.h"
-#include "control.h"
-#include "user_ops.h"
-#include "room_ops.h"
-#include "database.h"
-#include "msgbase.h"
-#include "internet_addressing.h"
-#include "genstamp.h"
-#include "domain.h"
-#include "clientsocket.h"
-#include "locate_host.h"
-#include "citadel_dirs.h"
-#include "ctdl_module.h"
-
-/*
- * Here's where our NNTP session begins its happy day.
- */
-void nntp_greeting(void)
-{
- strcpy(CC->cs_clientname, "NNTP session");
- CC->cs_flags |= CS_STEALTH;
-
- /* CC->session_specific_data = malloc(sizeof(citnntp));
- memset(NNTP, 0, sizeof(citnntp));
- */
-
- if (CC->nologin==1) {
- cprintf("451 Too many connections are already open; please try again later.\r\n");
- CC->kill_me = KILLME_MAX_SESSIONS_EXCEEDED;
- return;
- }
-
- /* Note: the FQDN *must* appear as the first thing after the 220 code.
- * Some clients (including citmail.c) depend on it being there.
- */
- cprintf("200 %s NNTP Citadel server is not finished yet\r\n", config.c_fqdn);
-}
-
-
-/*
- * NNTPS is just like NNTP, except it goes crypto right away.
- */
-void nntps_greeting(void) {
- CtdlModuleStartCryptoMsgs(NULL, NULL, NULL);
-#ifdef HAVE_OPENSSL
- if (!CC->redirect_ssl) CC->kill_me = KILLME_NO_CRYPTO; /* kill session if no crypto */
-#endif
- nntp_greeting();
-}
-
-
-
-/*
- * implements the STARTTLS command
- */
-void nntp_starttls(void)
-{
- char ok_response[SIZ];
- char nosup_response[SIZ];
- char error_response[SIZ];
-
- sprintf(ok_response, "382 Begin TLS negotiation now\r\n");
- sprintf(nosup_response, "502 Can not initiate TLS negotiation\r\n");
- sprintf(error_response, "580 Internal error\r\n");
- CtdlModuleStartCryptoMsgs(ok_response, nosup_response, error_response);
-}
-
-
-void nntp_noop(void)
-{
- cprintf("250 NOOP\r\n");
-}
-
-
-void nntp_capabilities(void)
-{
- cprintf("101 Capability list:\r\n");
-#ifdef HAVE_OPENSSL
- cprintf("STARTTLS\r\n");
-#endif
- if (!CC->logged_in) {
- cprintf("AUTHINFO USER\r\n");
- }
- cprintf(".\r\n");
-}
-
-
-void nntp_quit(void)
-{
- cprintf("221 Goodbye...\r\n");
- CC->kill_me = KILLME_CLIENT_LOGGED_OUT;
-}
-
-
-void nntp_cleanup(void)
-{
- /* nothing here yet */
-}
-
-
-
-/*
- * Implements the AUTHINFO USER command (RFC 4643)
- */
-void nntp_authinfo_user(const char *username)
-{
- int a = CtdlLoginExistingUser(NULL, username);
- switch (a) {
- case login_already_logged_in:
- cprintf("482 Already logged in\r\n");
- return;
- case login_too_many_users:
- cprintf("481 Too many users are already online (maximum is %d)\r\n", config.c_maxsessions);
- return;
- case login_ok:
- cprintf("381 Password required for %s\r\n", CC->curr_user);
- return;
- case login_not_found:
- cprintf("481 %s not found\r\n", username);
- return;
- default:
- cprintf("502 Internal error\r\n");
- }
-}
-
-
-/*
- * Implements the AUTHINFO PASS command (RFC 4643)
- */
-void nntp_authinfo_pass(const char *buf)
-{
- int a;
-
- a = CtdlTryPassword(buf, strlen(buf));
-
- switch (a) {
- case pass_already_logged_in:
- cprintf("482 Already logged in\r\n");
- return;
- case pass_no_user:
- cprintf("482 Authentication commands issued out of sequence\r\n");
- return;
- case pass_wrong_password:
- cprintf("481 Authentication failed\r\n");
- return;
- case pass_ok:
- cprintf("281 Authentication accepted\r\n");
- return;
- }
-}
-
-
-
-/*
- * Implements the AUTHINFO extension (RFC 4643) in USER/PASS mode
- */
-void nntp_authinfo(const char *cmd) {
-
- if (!strncasecmp(cmd, "authinfo user ", 14)) {
- nntp_authinfo_user(&cmd[14]);
- }
-
- else if (!strncasecmp(cmd, "authinfo pass ", 14)) {
- nntp_authinfo_pass(&cmd[14]);
- }
-
- else {
- cprintf("502 command unavailable\r\n");
- }
-}
-
-
-
-/*
- * Main command loop for NNTP server sessions.
- */
-void nntp_command_loop(void)
-{
- StrBuf *Cmd = NewStrBuf();
- char cmdname[16];
-
- time(&CC->lastcmd);
- if (CtdlClientGetLine(Cmd) < 1) {
- syslog(LOG_CRIT, "NNTP: client disconnected: ending session.\n");
- CC->kill_me = KILLME_CLIENT_DISCONNECTED;
- FreeStrBuf(&Cmd);
- return;
- }
- syslog(LOG_DEBUG, "NNTP server: %s\n", ChrPtr(Cmd));
- extract_token(cmdname, ChrPtr(Cmd), 0, ' ', sizeof cmdname);
-
- /*
- * Rumpelstiltskin lookups are awesome
- */
-
- if (!strcasecmp(cmdname, "quit")) {
- nntp_quit();
- }
-
- else if (!strcasecmp(cmdname, "capabilities")) {
- nntp_capabilities();
- }
-
- else if (!strcasecmp(cmdname, "starttls")) {
- nntp_starttls();
- }
-
- else if (!strcasecmp(cmdname, "noop")) {
- nntp_noop();
- }
-
- else if (!strcasecmp(cmdname, "authinfo")) {
- nntp_authinfo(ChrPtr(Cmd));
- }
-
- else {
- cprintf("500 I'm afraid I can't do that.\r\n");
- }
-
- FreeStrBuf(&Cmd);
-}
-
-
-/*****************************************************************************/
-/* MODULE INITIALIZATION STUFF */
-/*****************************************************************************/
-
-
-/*
- * This cleanup function blows away the temporary memory used by
- * the NNTP server.
- */
-void nntp_cleanup_function(void)
-{
- /* Don't do this stuff if this is not an NNTP session! */
- if (CC->h_command_function != nntp_command_loop) return;
-
- syslog(LOG_DEBUG, "Performing NNTP cleanup hook\n");
-}
-
-const char *CitadelServiceNNTP="NNTP";
-
-CTDL_MODULE_INIT(nntp)
-{
- if (!threading)
- {
- CtdlRegisterServiceHook(119, // FIXME config.c_nntp_port,
- NULL,
- nntp_greeting,
- nntp_command_loop,
- NULL,
- CitadelServiceNNTP);
-
-#ifdef HAVE_OPENSSL
- CtdlRegisterServiceHook(563, // FIXME config.c_nntps_port,
- NULL,
- nntps_greeting,
- nntp_command_loop,
- NULL,
- CitadelServiceNNTP);
-#endif
-
- CtdlRegisterCleanupHook(nntp_cleanup);
- CtdlRegisterSessionHook(nntp_cleanup_function, EVT_STOP, PRIO_STOP + 250);
- }
-
- /* return our module name for the log */
- return "nntp";
-}
projects / citadel.git / commitdiff