/*
- * $Id$
- *
- * This module is an SMTP and ESMTP implementation for the Citadel system.
+ * This module is an SMTP and ESMTP server for the Citadel system.
* It is compliant with all of the following:
*
* RFC 821 - Simple Mail Transfer Protocol
* The VRFY and EXPN commands have been removed from this implementation
* because nobody uses these commands anymore, except for spammers.
*
- * Copyright (c) 1998-2009 by the citadel.org team
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 3 of the License, or
- * (at your option) any later version.
+ * Copyright (c) 1998-2018 by the citadel.org team
*
- * 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.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * 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 "config.h"
#include "control.h"
#include "user_ops.h"
+#include "room_ops.h"
#include "database.h"
#include "msgbase.h"
#include "internet_addressing.h"
#include "clientsocket.h"
#include "locate_host.h"
#include "citadel_dirs.h"
-
-
-
-#ifndef HAVE_SNPRINTF
-#include "snprintf.h"
-#endif
-
-
#include "ctdl_module.h"
-
-
-typedef struct _citsmtp { /* Information about the current session */
- int command_state;
- char helo_node[SIZ];
- char from[SIZ];
- char recipients[SIZ];
- int number_of_recipients;
- int delivery_mode;
- int message_originated_locally;
- int is_lmtp;
- int is_unfiltered;
- int is_msa;
-}citsmtp;
+#include "smtp_util.h"
enum { /* Command states for login authentication */
smtp_command,
smtp_plain
};
-#define SMTP ((citsmtp *)CC->session_specific_data)
+enum SMTP_FLAGS {
+ HELO,
+ EHLO,
+ LHLO
+};
+typedef void (*smtp_handler)(long offest, long Flags);
-int run_queue_now = 0; /* Set to 1 to ignore SMTP send retry times */
+typedef struct _smtp_handler_hook {
+ smtp_handler h;
+ int Flags;
+} smtp_handler_hook;
-citthread_mutex_t smtp_send_lock;
+int EnableSMTPLog = 0;
+HashList *SMTPCmds = NULL;
+#define MaxSMTPCmdLen 10
-/*****************************************************************************/
-/* SMTP SERVER (INBOUND) STUFF */
-/*****************************************************************************/
+#define RegisterSmtpCMD(First, H, Flags) \
+ registerSmtpCMD(HKEY(First), H, Flags)
+void registerSmtpCMD(const char *First, long FLen,
+ smtp_handler H,
+ int Flags)
+{
+ smtp_handler_hook *h;
+ if (FLen >= MaxSMTPCmdLen)
+ {
+ abort();
+ }
+
+ h = (smtp_handler_hook*) malloc(sizeof(smtp_handler_hook));
+ memset(h, 0, sizeof(smtp_handler_hook));
+
+ h->Flags = Flags;
+ h->h = H;
+ Put(SMTPCmds, First, FLen, h, NULL);
+}
+
+
+void smtp_cleanup(void)
+{
+ DeleteHash(&SMTPCmds);
+}
/*
* Here's where our SMTP session begins its happy day.
memset(SMTP, 0, sizeof(citsmtp));
sSMTP = SMTP;
sSMTP->is_msa = is_msa;
+ sSMTP->Cmd = NewStrBufPlain(NULL, SIZ);
+ sSMTP->helo_node = NewStrBuf();
+ sSMTP->from = NewStrBufPlain(NULL, SIZ);
+ sSMTP->recipients = NewStrBufPlain(NULL, SIZ);
+ sSMTP->OneRcpt = NewStrBufPlain(NULL, SIZ);
+ sSMTP->preferred_sender_email = NULL;
+ sSMTP->preferred_sender_name = NULL;
/* If this config option is set, reject connections from problem
* addresses immediately instead of after they execute a RCPT
*/
- if ( (config.c_rbl_at_greeting) && (sSMTP->is_msa == 0) ) {
- if (rbl_check(message_to_spammer)) {
- if (CtdlThreadCheckStop())
+ if ( (CtdlGetConfigInt("c_rbl_at_greeting")) && (sSMTP->is_msa == 0) ) {
+ if (rbl_check(CC->cs_addr, message_to_spammer)) {
+ if (server_shutting_down)
cprintf("421 %s\r\n", message_to_spammer);
else
cprintf("550 %s\r\n", message_to_spammer);
- CC->kill_me = 1;
+ CC->kill_me = KILLME_SPAMMER;
/* no need to free_recipients(valid), it's not allocated yet */
return;
}
/* Otherwise we're either clean or we check later. */
if (CC->nologin==1) {
- cprintf("500 Too many users are already online (maximum is %d)\r\n",
- config.c_maxsessions
- );
- CC->kill_me = 1;
+ cprintf("451 Too many connections are already open; please try again later.\r\n");
+ CC->kill_me = KILLME_MAX_SESSIONS_EXCEEDED;
/* no need to free_recipients(valid), it's not allocated yet */
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("220 %s ESMTP Citadel server ready.\r\n", config.c_fqdn);
+ cprintf("220 %s ESMTP Citadel server ready.\r\n", CtdlGetConfigStr("c_fqdn"));
}
void smtps_greeting(void) {
CtdlModuleStartCryptoMsgs(NULL, NULL, NULL);
#ifdef HAVE_OPENSSL
- if (!CC->redirect_ssl) CC->kill_me = 1; /* kill session if no crypto */
+ if (!CC->redirect_ssl) CC->kill_me = KILLME_NO_CRYPTO; /* kill session if no crypto */
#endif
smtp_greeting(0);
}
* LMTP is like SMTP but with some extra bonus footage added.
*/
void lmtp_greeting(void) {
- citsmtp *sSMTP;
smtp_greeting(0);
- sSMTP = SMTP;
SMTP->is_lmtp = 1;
}
/*
* Login greeting common to all auth methods
*/
-void smtp_auth_greeting(void) {
- cprintf("235 Hello, %s\r\n", CC->user.fullname);
- CtdlLogPrintf(CTDL_NOTICE, "SMTP authenticated %s\n", CC->user.fullname);
- CC->internal_pgm = 0;
- CC->cs_flags &= ~CS_STEALTH;
+void smtp_auth_greeting(long offset, long Flags) {
+ struct CitContext *CCC = CC;
+ cprintf("235 Hello, %s\r\n", CCC->user.fullname);
+ syslog(LOG_NOTICE, "SMTP authenticated %s", CCC->user.fullname);
+ CCC->internal_pgm = 0;
+ CCC->cs_flags &= ~CS_STEALTH;
}
*
* which_command: 0=HELO, 1=EHLO, 2=LHLO
*/
-void smtp_hello(char *argbuf, int which_command) {
+void smtp_hello(long offset, long which_command)
+{
+ struct CitContext *CCC = CC;
citsmtp *sSMTP = SMTP;
- safestrncpy(sSMTP->helo_node, argbuf, sizeof sSMTP->helo_node);
+ StrBufAppendBuf (sSMTP->helo_node, sSMTP->Cmd, offset);
- if ( (which_command != 2) && (sSMTP->is_lmtp) ) {
+ if ( (which_command != LHLO) && (sSMTP->is_lmtp) ) {
cprintf("500 Only LHLO is allowed when running LMTP\r\n");
return;
}
- if ( (which_command == 2) && (sSMTP->is_lmtp == 0) ) {
+ if ( (which_command == LHLO) && (sSMTP->is_lmtp == 0) ) {
cprintf("500 LHLO is only allowed when running LMTP\r\n");
return;
}
- if (which_command == 0) {
+ if (which_command == HELO) {
cprintf("250 Hello %s (%s [%s])\r\n",
- sSMTP->helo_node,
- CC->cs_host,
- CC->cs_addr
+ ChrPtr(sSMTP->helo_node),
+ CCC->cs_host,
+ CCC->cs_addr
);
}
else {
- if (which_command == 1) {
+ if (which_command == EHLO) {
cprintf("250-Hello %s (%s [%s])\r\n",
- sSMTP->helo_node,
- CC->cs_host,
- CC->cs_addr
+ ChrPtr(sSMTP->helo_node),
+ CCC->cs_host,
+ CCC->cs_addr
);
}
else {
cprintf("250-Greetings and joyous salutations.\r\n");
}
cprintf("250-HELP\r\n");
- cprintf("250-SIZE %ld\r\n", config.c_maxmsglen);
+ cprintf("250-SIZE %ld\r\n", CtdlGetConfigLong("c_maxmsglen"));
#ifdef HAVE_OPENSSL
/*
* the SMTP-MSA port, not on the SMTP-MTA port, due to
* questionable reliability of TLS in certain sending MTA's.
*/
- if ( (!CC->redirect_ssl) && (sSMTP->is_msa) ) {
+ if ( (!CCC->redirect_ssl) && (sSMTP->is_msa) ) {
cprintf("250-STARTTLS\r\n");
}
#endif /* HAVE_OPENSSL */
}
+/*
+ * Backend function for smtp_webcit_preferences_hack().
+ * Look at a message and determine if it's the preferences file.
+ */
+void smtp_webcit_preferences_hack_backend(long msgnum, void *userdata) {
+ struct CtdlMessage *msg;
+ char **webcit_conf = (char **) userdata;
+
+ if (*webcit_conf) {
+ return; // already got it
+ }
+
+ msg = CtdlFetchMessage(msgnum, 1, 1);
+ if (msg == NULL) {
+ return;
+ }
+
+ if ( !CM_IsEmpty(msg, eMsgSubject) &&
+ (!strcasecmp(msg->cm_fields[eMsgSubject], "__ WebCit Preferences __")))
+ {
+ /* This is it! Change ownership of the message text so it doesn't get freed. */
+ *webcit_conf = (char *)msg->cm_fields[eMesageText];
+ msg->cm_fields[eMesageText] = NULL;
+ }
+ CM_Free(msg);
+}
+
+
+/*
+ * The configuration item for the user's preferred display name for outgoing email is, unfortunately,
+ * stored in the account's WebCit configuration. We have to fetch it now.
+ */
+void smtp_webcit_preferences_hack(void) {
+ struct CitContext *CCC = CC;
+ char config_roomname[ROOMNAMELEN];
+ char *webcit_conf = NULL;
+ citsmtp *sSMTP = SMTP;
+
+ snprintf(config_roomname, sizeof config_roomname, "%010ld.%s", CCC->user.usernum, USERCONFIGROOM);
+ if (CtdlGetRoom(&CCC->room, config_roomname) != 0) {
+ return;
+ }
+
+ /*
+ * Find the WebCit configuration message
+ */
+
+ CtdlForEachMessage(MSGS_ALL, 1, NULL, NULL, NULL, smtp_webcit_preferences_hack_backend, (void *)&webcit_conf);
+
+ if (!webcit_conf) {
+ return;
+ }
+
+ /* Parse the webcit configuration and attempt to do something useful with it */
+ char *str = webcit_conf;
+ char *saveptr = str;
+ char *this_line = NULL;
+ while (this_line = strtok_r(str, "\n", &saveptr), this_line != NULL) {
+ str = NULL;
+ if (!strncasecmp(this_line, "defaultfrom|", 12)) {
+ sSMTP->preferred_sender_email = NewStrBufPlain(&this_line[12], -1);
+ }
+ if (!strncasecmp(this_line, "defaultname|", 12)) {
+ sSMTP->preferred_sender_name = NewStrBufPlain(&this_line[12], -1);
+ }
+ if ((!strncasecmp(this_line, "defaultname|", 12)) && (sSMTP->preferred_sender_name == NULL)) {
+ sSMTP->preferred_sender_name = NewStrBufPlain(&this_line[12], -1);
+ }
+
+ }
+ free(webcit_conf);
+}
+
+
/*
* Implement HELP command.
*/
-void smtp_help(void) {
+void smtp_help(long offset, long Flags) {
cprintf("214 RTFM http://www.ietf.org/rfc/rfc2821.txt\r\n");
}
/*
*
*/
-void smtp_get_user(char *argbuf) {
+void smtp_get_user(long offset)
+{
char buf[SIZ];
- char username[SIZ];
citsmtp *sSMTP = SMTP;
- CtdlDecodeBase64(username, argbuf, SIZ);
- /* CtdlLogPrintf(CTDL_DEBUG, "Trying <%s>\n", username); */
- if (CtdlLoginExistingUser(NULL, username) == login_ok) {
- CtdlEncodeBase64(buf, "Password:", 9, 0);
+ StrBufDecodeBase64(sSMTP->Cmd);
+
+ if (CtdlLoginExistingUser(ChrPtr(sSMTP->Cmd)) == login_ok) {
+ size_t len = CtdlEncodeBase64(buf, "Password:", 9, 0);
+
+ if (buf[len - 1] == '\n') {
+ buf[len - 1] = '\0';
+ }
cprintf("334 %s\r\n", buf);
sSMTP->command_state = smtp_password;
}
/*
*
*/
-void smtp_get_pass(char *argbuf) {
+void smtp_get_pass(long offset, long Flags)
+{
+ citsmtp *sSMTP = SMTP;
char password[SIZ];
- long len;
- memset(password, 0, sizeof(password));
- len = CtdlDecodeBase64(password, argbuf, SIZ);
- /* CtdlLogPrintf(CTDL_DEBUG, "Trying <%s>\n", password); */
- if (CtdlTryPassword(password, len) == pass_ok) {
- smtp_auth_greeting();
+ memset(password, 0, sizeof(password));
+ StrBufDecodeBase64(sSMTP->Cmd);
+ syslog(LOG_DEBUG, "Trying <%s>", password);
+ if (CtdlTryPassword(SKEY(sSMTP->Cmd)) == pass_ok) {
+ smtp_auth_greeting(offset, Flags);
}
else {
cprintf("535 Authentication failed.\r\n");
}
- SMTP->command_state = smtp_command;
+ sSMTP->command_state = smtp_command;
}
/*
* Back end for PLAIN auth method (either inline or multistate)
*/
-void smtp_try_plain(char *encoded_authstring) {
- char decoded_authstring[1024];
- char ident[256];
- char user[256];
- char pass[256];
+void smtp_try_plain(long offset, long Flags)
+{
+ citsmtp *sSMTP = SMTP;
+ const char*decoded_authstring;
+ char ident[256] = "";
+ char user[256] = "";
+ char pass[256] = "";
int result;
- long len;
- CtdlDecodeBase64(decoded_authstring, encoded_authstring, strlen(encoded_authstring) );
- safestrncpy(ident, decoded_authstring, sizeof ident);
- safestrncpy(user, &decoded_authstring[strlen(ident) + 1], sizeof user);
- len = safestrncpy(pass, &decoded_authstring[strlen(ident) + strlen(user) + 2], sizeof pass);
- if (len == -1)
- len = sizeof(pass) - 1;
+ long decoded_len;
+ long len = 0;
+ long plen = 0;
+
+ memset(pass, 0, sizeof(pass));
+ decoded_len = StrBufDecodeBase64(sSMTP->Cmd);
+
+ if (decoded_len > 0)
+ {
+ decoded_authstring = ChrPtr(sSMTP->Cmd);
+
+ len = safestrncpy(ident, decoded_authstring, sizeof ident);
+
+ decoded_len -= len - 1;
+ decoded_authstring += len + 1;
+
+ if (decoded_len > 0)
+ {
+ len = safestrncpy(user, decoded_authstring, sizeof user);
+
+ decoded_authstring += len + 1;
+ decoded_len -= len - 1;
+ }
+
+ if (decoded_len > 0)
+ {
+ plen = safestrncpy(pass, decoded_authstring, sizeof pass);
+
+ if (plen < 0)
+ plen = sizeof(pass) - 1;
+ }
+ }
- SMTP->command_state = smtp_command;
+ sSMTP->command_state = smtp_command;
if (!IsEmptyStr(ident)) {
- result = CtdlLoginExistingUser(user, ident);
+ result = CtdlLoginExistingUser(ident);
}
else {
- result = CtdlLoginExistingUser(NULL, user);
+ result = CtdlLoginExistingUser(user);
}
if (result == login_ok) {
- if (CtdlTryPassword(pass, len) == pass_ok) {
- smtp_auth_greeting();
+ if (CtdlTryPassword(pass, plen) == pass_ok) {
+ smtp_webcit_preferences_hack();
+ smtp_auth_greeting(offset, Flags);
return;
}
}
/*
* Attempt to perform authenticated SMTP
*/
-void smtp_auth(char *argbuf) {
+void smtp_auth(long offset, long Flags)
+{
+ struct CitContext *CCC = CC;
+ citsmtp *sSMTP = SMTP;
char username_prompt[64];
char method[64];
char encoded_authstring[1024];
- if (CC->logged_in) {
+ if (CCC->logged_in) {
cprintf("504 Already logged in.\r\n");
return;
}
- extract_token(method, argbuf, 0, ' ', sizeof method);
+ extract_token(method, ChrPtr(sSMTP->Cmd) + offset, 0, ' ', sizeof method);
if (!strncasecmp(method, "login", 5) ) {
- if (strlen(argbuf) >= 7) {
- smtp_get_user(&argbuf[6]);
+ if (StrLength(sSMTP->Cmd) - offset >= 7) {
+ smtp_get_user(6);
}
else {
- CtdlEncodeBase64(username_prompt, "Username:", 9, 0);
+ size_t len = CtdlEncodeBase64(username_prompt, "Username:", 9, 0);
+ if (username_prompt[len - 1] == '\n') {
+ username_prompt[len - 1] = '\0';
+ }
cprintf("334 %s\r\n", username_prompt);
- SMTP->command_state = smtp_user;
+ sSMTP->command_state = smtp_user;
}
return;
}
if (!strncasecmp(method, "plain", 5) ) {
- if (num_tokens(argbuf, ' ') < 2) {
+ long len;
+ if (num_tokens(ChrPtr(sSMTP->Cmd) + offset, ' ') < 2) {
cprintf("334 \r\n");
SMTP->command_state = smtp_plain;
return;
}
- extract_token(encoded_authstring, argbuf, 1, ' ', sizeof encoded_authstring);
-
- smtp_try_plain(encoded_authstring);
+ len = extract_token(encoded_authstring,
+ ChrPtr(sSMTP->Cmd) + offset,
+ 1, ' ',
+ sizeof encoded_authstring);
+ StrBufPlain(sSMTP->Cmd, encoded_authstring, len);
+ smtp_try_plain(0, Flags);
return;
}
*
* Set do_response to nonzero to output the SMTP RSET response code.
*/
-void smtp_rset(int do_response) {
- int is_lmtp;
- int is_unfiltered;
+void smtp_rset(long offset, long do_response) {
citsmtp *sSMTP = SMTP;
/*
* but we need to preserve this one little piece of information, so
* we save it for later.
*/
- is_lmtp = sSMTP->is_lmtp;
- is_unfiltered = sSMTP->is_unfiltered;
- memset(sSMTP, 0, sizeof(citsmtp));
+ FlushStrBuf(sSMTP->Cmd);
+ FlushStrBuf(sSMTP->helo_node);
+ FlushStrBuf(sSMTP->from);
+ FlushStrBuf(sSMTP->recipients);
+ FlushStrBuf(sSMTP->OneRcpt);
+
+ sSMTP->command_state = 0;
+ sSMTP->number_of_recipients = 0;
+ sSMTP->delivery_mode = 0;
+ sSMTP->message_originated_locally = 0;
+ sSMTP->is_msa = 0;
+ /*
+ * we must remember is_lmtp & is_unfiltered.
+ */
/*
* It is somewhat ambiguous whether we want to log out when a RSET
* }
*/
- /*
- * Reinstate this little piece of information we saved (see above).
- */
- sSMTP->is_lmtp = is_lmtp;
- sSMTP->is_unfiltered = is_unfiltered;
-
if (do_response) {
cprintf("250 Zap!\r\n");
}
* Clear out the portions of the state buffer that need to be cleared out
* after the DATA command finishes.
*/
-void smtp_data_clear(void) {
+void smtp_data_clear(long offset, long flags)
+{
citsmtp *sSMTP = SMTP;
- strcpy(sSMTP->from, "");
- strcpy(sSMTP->recipients, "");
+ FlushStrBuf(sSMTP->from);
+ FlushStrBuf(sSMTP->recipients);
+ FlushStrBuf(sSMTP->OneRcpt);
sSMTP->number_of_recipients = 0;
sSMTP->delivery_mode = 0;
sSMTP->message_originated_locally = 0;
}
-const char *smtp_get_Recipients(void)
-{
- citsmtp *sSMTP = SMTP;
-
- if (sSMTP == NULL)
- return NULL;
- else return sSMTP->from;
-}
-
/*
* Implements the "MAIL FROM:" command
*/
-void smtp_mail(char *argbuf) {
+void smtp_mail(long offset, long flags) {
char user[SIZ];
char node[SIZ];
char name[SIZ];
+ struct CitContext *CCC = CC;
citsmtp *sSMTP = SMTP;
- if (!IsEmptyStr(sSMTP->from)) {
+ if (StrLength(sSMTP->from) > 0) {
cprintf("503 Only one sender permitted\r\n");
return;
}
- if (strncasecmp(argbuf, "From:", 5)) {
+ if (strncasecmp(ChrPtr(sSMTP->Cmd) + offset, "From:", 5)) {
cprintf("501 Syntax error\r\n");
return;
}
- strcpy(sSMTP->from, &argbuf[5]);
- striplt(sSMTP->from);
- if (haschar(sSMTP->from, '<') > 0) {
- stripallbut(sSMTP->from, '<', '>');
+ StrBufAppendBuf(sSMTP->from, sSMTP->Cmd, offset);
+ StrBufTrim(sSMTP->from);
+ if (strchr(ChrPtr(sSMTP->from), '<') != NULL) {
+ StrBufStripAllBut(sSMTP->from, '<', '>');
}
/* We used to reject empty sender names, until it was brought to our
* address so we don't have to contend with the empty string causing
* other code to fail when it's expecting something there.
*/
- if (IsEmptyStr(sSMTP->from)) {
- strcpy(sSMTP->from, "someone@example.com");
+ if (StrLength(sSMTP->from) == 0) {
+ StrBufPlain(sSMTP->from, HKEY("someone@example.com"));
}
/* If this SMTP connection is from a logged-in user, force the 'from'
* to be the user's Internet e-mail address as Citadel knows it.
*/
- if (CC->logged_in) {
- safestrncpy(sSMTP->from, CC->cs_inet_email, sizeof sSMTP->from);
- cprintf("250 Sender ok <%s>\r\n", sSMTP->from);
+ if (CCC->logged_in) {
+ StrBufPlain(sSMTP->from, CCC->cs_inet_email, -1);
+ cprintf("250 Sender ok <%s>\r\n", ChrPtr(sSMTP->from));
sSMTP->message_originated_locally = 1;
return;
}
/* Otherwise, make sure outsiders aren't trying to forge mail from
* this system (unless, of course, c_allow_spoofing is enabled)
*/
- else if (config.c_allow_spoofing == 0) {
- process_rfc822_addr(sSMTP->from, user, node, name);
+ else if (CtdlGetConfigInt("c_allow_spoofing") == 0) {
+ process_rfc822_addr(ChrPtr(sSMTP->from), user, node, name);
+ syslog(LOG_DEBUG, "Claimed envelope sender is '%s' == '%s' @ '%s' ('%s')",
+ ChrPtr(sSMTP->from), user, node, name
+ );
if (CtdlHostAlias(node) != hostalias_nomatch) {
cprintf("550 You must log in to send mail from %s\r\n", node);
- strcpy(sSMTP->from, "");
+ FlushStrBuf(sSMTP->from);
+ syslog(LOG_DEBUG, "Rejecting unauthenticated mail from %s", node);
return;
}
}
/*
* Implements the "RCPT To:" command
*/
-void smtp_rcpt(char *argbuf) {
- char recp[1024];
+void smtp_rcpt(long offset, long flags)
+{
+ struct CitContext *CCC = CC;
char message_to_spammer[SIZ];
- struct recptypes *valid = NULL;
+ recptypes *valid = NULL;
citsmtp *sSMTP = SMTP;
- if (IsEmptyStr(sSMTP->from)) {
+ if (StrLength(sSMTP->from) == 0) {
cprintf("503 Need MAIL before RCPT\r\n");
return;
}
-
- if (strncasecmp(argbuf, "To:", 3)) {
+
+ if (strncasecmp(ChrPtr(sSMTP->Cmd) + offset, "To:", 3)) {
cprintf("501 Syntax error\r\n");
return;
}
- if ( (sSMTP->is_msa) && (!CC->logged_in) ) {
+ if ( (sSMTP->is_msa) && (!CCC->logged_in) ) {
cprintf("550 You must log in to send mail on this port.\r\n");
- strcpy(sSMTP->from, "");
+ FlushStrBuf(sSMTP->from);
return;
}
+ FlushStrBuf(sSMTP->OneRcpt);
+ StrBufAppendBuf(sSMTP->OneRcpt, sSMTP->Cmd, offset + 3);
+ StrBufTrim(sSMTP->OneRcpt);
+ StrBufStripAllBut(sSMTP->OneRcpt, '<', '>');
- safestrncpy(recp, &argbuf[3], sizeof recp);
- striplt(recp);
- stripallbut(recp, '<', '>');
-
- if ( (strlen(recp) + strlen(sSMTP->recipients) + 1 ) >= SIZ) {
+ if ( (StrLength(sSMTP->OneRcpt) + StrLength(sSMTP->recipients)) >= SIZ) {
cprintf("452 Too many recipients\r\n");
return;
}
/* RBL check */
- if ( (!CC->logged_in) /* Don't RBL authenticated users */
+ if ( (!CCC->logged_in) /* Don't RBL authenticated users */
&& (!sSMTP->is_lmtp) ) { /* Don't RBL LMTP clients */
- if (config.c_rbl_at_greeting == 0) { /* Don't RBL again if we already did it */
- if (rbl_check(message_to_spammer)) {
- if (CtdlThreadCheckStop())
+ if (CtdlGetConfigInt("c_rbl_at_greeting") == 0) { /* Don't RBL again if we already did it */
+ if (rbl_check(CC->cs_addr, message_to_spammer)) {
+ if (server_shutting_down)
cprintf("421 %s\r\n", message_to_spammer);
else
cprintf("550 %s\r\n", message_to_spammer);
}
}
- valid = validate_recipients(recp,
- smtp_get_Recipients (),
- (sSMTP->is_lmtp)? POST_LMTP:
- (CC->logged_in)? POST_LOGGED_IN:
- POST_EXTERNAL);
+ valid = validate_recipients(
+ ChrPtr(sSMTP->OneRcpt),
+ smtp_get_Recipients(),
+ (sSMTP->is_lmtp)? POST_LMTP: (CCC->logged_in)? POST_LOGGED_IN: POST_EXTERNAL
+ );
if (valid->num_error != 0) {
cprintf("550 %s\r\n", valid->errormsg);
free_recipients(valid);
}
if (valid->num_internet > 0) {
- if (CC->logged_in) {
- if (CtdlCheckInternetMailPermission(&CC->user)==0) {
- cprintf("551 <%s> - you do not have permission to send Internet mail\r\n", recp);
+ if (CCC->logged_in) {
+ if (CtdlCheckInternetMailPermission(&CCC->user)==0) {
+ cprintf("551 <%s> - you do not have permission to send Internet mail\r\n",
+ ChrPtr(sSMTP->OneRcpt));
free_recipients(valid);
return;
}
if (valid->num_internet > 0) {
if ( (sSMTP->message_originated_locally == 0)
&& (sSMTP->is_lmtp == 0) ) {
- cprintf("551 <%s> - relaying denied\r\n", recp);
+ cprintf("551 <%s> - relaying denied\r\n", ChrPtr(sSMTP->OneRcpt));
free_recipients(valid);
return;
}
}
- cprintf("250 RCPT ok <%s>\r\n", recp);
- if (!IsEmptyStr(sSMTP->recipients)) {
- strcat(sSMTP->recipients, ",");
+ cprintf("250 RCPT ok <%s>\r\n", ChrPtr(sSMTP->OneRcpt));
+ if (StrLength(sSMTP->recipients) > 0) {
+ StrBufAppendBufPlain(sSMTP->recipients, HKEY(","), 0);
}
- strcat(sSMTP->recipients, recp);
- sSMTP->number_of_recipients += 1;
+ StrBufAppendBuf(sSMTP->recipients, sSMTP->OneRcpt, 0);
+ sSMTP->number_of_recipients ++;
if (valid != NULL) {
free_recipients(valid);
}
/*
* Implements the DATA command
*/
-void smtp_data(void) {
+void smtp_data(long offset, long flags)
+{
+ struct CitContext *CCC = CC;
StrBuf *body;
- char *defbody; //TODO: remove me
+ StrBuf *defbody;
struct CtdlMessage *msg = NULL;
long msgnum = (-1L);
char nowstamp[SIZ];
- struct recptypes *valid;
+ recptypes *valid;
int scan_errors;
int i;
- char result[SIZ];
citsmtp *sSMTP = SMTP;
- if (IsEmptyStr(sSMTP->from)) {
+ if (StrLength(sSMTP->from) == 0) {
cprintf("503 Need MAIL command first.\r\n");
return;
}
cprintf("354 Transmit message now - terminate with '.' by itself\r\n");
datestring(nowstamp, sizeof nowstamp, time(NULL), DATESTRING_RFC822);
- defbody = malloc(4096);
+ defbody = NewStrBufPlain(NULL, SIZ);
if (defbody != NULL) {
- if (sSMTP->is_lmtp && (CC->cs_UDSclientUID != -1)) {
- snprintf(defbody, 4096,
- "Received: from %s (Citadel from userid %ld)\n"
- " by %s; %s\n",
- sSMTP->helo_node,
- (long int) CC->cs_UDSclientUID,
- config.c_fqdn,
- nowstamp);
+ if (sSMTP->is_lmtp && (CCC->cs_UDSclientUID != -1)) {
+ StrBufPrintf(
+ defbody,
+ "Received: from %s (Citadel from userid %ld)\n"
+ " by %s; %s\n",
+ ChrPtr(sSMTP->helo_node),
+ (long int) CCC->cs_UDSclientUID,
+ CtdlGetConfigStr("c_fqdn"),
+ nowstamp);
}
else {
- snprintf(defbody, 4096,
- "Received: from %s (%s [%s])\n"
- " by %s; %s\n",
- sSMTP->helo_node,
- CC->cs_host,
- CC->cs_addr,
- config.c_fqdn,
- nowstamp);
+ StrBufPrintf(
+ defbody,
+ "Received: from %s (%s [%s])\n"
+ " by %s; %s\n",
+ ChrPtr(sSMTP->helo_node),
+ CCC->cs_host,
+ CCC->cs_addr,
+ CtdlGetConfigStr("c_fqdn"),
+ nowstamp);
}
}
- body = CtdlReadMessageBodyBuf(HKEY("."), config.c_maxmsglen, defbody, 1, NULL);
+ body = CtdlReadMessageBodyBuf(HKEY("."), CtdlGetConfigLong("c_maxmsglen"), defbody, 1);
+ FreeStrBuf(&defbody);
if (body == NULL) {
cprintf("550 Unable to save message: internal error.\r\n");
return;
}
- CtdlLogPrintf(CTDL_DEBUG, "Converting message...\n");
+ syslog(LOG_DEBUG, "Converting message...");
msg = convert_internet_message_buf(&body);
/* If the user is locally authenticated, FORCE the From: header to
* to something ugly like "0000058008.Sent Items>" when the message
* is read with a Citadel client.
*/
- if ( (CC->logged_in) && (config.c_rfc822_strict_from == 0) ) {
- if (msg->cm_fields['A'] != NULL) free(msg->cm_fields['A']);
- if (msg->cm_fields['N'] != NULL) free(msg->cm_fields['N']);
- if (msg->cm_fields['H'] != NULL) free(msg->cm_fields['H']);
- if (msg->cm_fields['F'] != NULL) free(msg->cm_fields['F']);
- if (msg->cm_fields['O'] != NULL) free(msg->cm_fields['O']);
- msg->cm_fields['A'] = strdup(CC->user.fullname);
- msg->cm_fields['N'] = strdup(config.c_nodename);
- msg->cm_fields['H'] = strdup(config.c_humannode);
- msg->cm_fields['F'] = strdup(CC->cs_inet_email);
- msg->cm_fields['O'] = strdup(MAILROOM);
+ if ( (CCC->logged_in) && (CtdlGetConfigInt("c_rfc822_strict_from") != CFG_SMTP_FROM_NOFILTER) ) {
+ int validemail = 0;
+
+ if (!CM_IsEmpty(msg, erFc822Addr) &&
+ ((CtdlGetConfigInt("c_rfc822_strict_from") == CFG_SMTP_FROM_CORRECT) ||
+ (CtdlGetConfigInt("c_rfc822_strict_from") == CFG_SMTP_FROM_REJECT) ) )
+ {
+ if (!IsEmptyStr(CCC->cs_inet_email))
+ validemail = strcmp(CCC->cs_inet_email, msg->cm_fields[erFc822Addr]) == 0;
+ if ((!validemail) &&
+ (!IsEmptyStr(CCC->cs_inet_other_emails)))
+ {
+ int num_secondary_emails = 0;
+ int i;
+ num_secondary_emails = num_tokens(CCC->cs_inet_other_emails, '|');
+ for (i=0; i < num_secondary_emails && !validemail; ++i) {
+ char buf[256];
+ extract_token(buf, CCC->cs_inet_other_emails,i,'|',sizeof CCC->cs_inet_other_emails);
+ validemail = strcmp(buf, msg->cm_fields[erFc822Addr]) == 0;
+ }
+ }
+ }
+
+ if (!validemail && (CtdlGetConfigInt("c_rfc822_strict_from") == CFG_SMTP_FROM_REJECT)) {
+ syslog(LOG_ERR, "invalid sender '%s' - rejecting this message", msg->cm_fields[erFc822Addr]);
+ cprintf("550 Invalid sender '%s' - rejecting this message.\r\n", msg->cm_fields[erFc822Addr]);
+ return;
+ }
+
+ CM_SetField(msg, eOriginalRoom, HKEY(MAILROOM));
+ if (sSMTP->preferred_sender_name != NULL)
+ CM_SetField(msg, eAuthor, SKEY(sSMTP->preferred_sender_name));
+ else
+ CM_SetField(msg, eAuthor, CCC->user.fullname, strlen(CCC->user.fullname));
+
+ if (!validemail) {
+ if (sSMTP->preferred_sender_email != NULL)
+ CM_SetField(msg, erFc822Addr, SKEY(sSMTP->preferred_sender_email));
+ else
+ CM_SetField(msg, erFc822Addr, CCC->cs_inet_email, strlen(CCC->cs_inet_email));
+ }
}
/* Set the "envelope from" address */
- if (msg->cm_fields['P'] != NULL) {
- free(msg->cm_fields['P']);
- }
- msg->cm_fields['P'] = strdup(sSMTP->from);
+ CM_SetField(msg, eMessagePath, SKEY(sSMTP->from));
/* Set the "envelope to" address */
- if (msg->cm_fields['V'] != NULL) {
- free(msg->cm_fields['V']);
- }
- msg->cm_fields['V'] = strdup(sSMTP->recipients);
+ CM_SetField(msg, eenVelopeTo, SKEY(sSMTP->recipients));
/* Submit the message into the Citadel system. */
- valid = validate_recipients(sSMTP->recipients,
- smtp_get_Recipients (),
- (sSMTP->is_lmtp)? POST_LMTP:
- (CC->logged_in)? POST_LOGGED_IN:
- POST_EXTERNAL);
+ valid = validate_recipients(
+ ChrPtr(sSMTP->recipients),
+ smtp_get_Recipients(),
+ (sSMTP->is_lmtp)? POST_LMTP: (CCC->logged_in)? POST_LOGGED_IN: POST_EXTERNAL
+ );
/* If there are modules that want to scan this message before final
* submission (such as virus checkers or spam filters), call them now
scan_errors = 0;
}
else {
- scan_errors = PerformMessageHooks(msg, EVT_SMTPSCAN);
+ scan_errors = PerformMessageHooks(msg, valid, EVT_SMTPSCAN);
}
if (scan_errors > 0) { /* We don't want this message! */
- if (msg->cm_fields['0'] == NULL) {
- msg->cm_fields['0'] = strdup("Message rejected by filter");
+ if (CM_IsEmpty(msg, eErrorMsg)) {
+ CM_SetField(msg, eErrorMsg, HKEY("Message rejected by filter"));
}
- sprintf(result, "550 %s\r\n", msg->cm_fields['0']);
+ StrBufPrintf(sSMTP->OneRcpt, "550 %s\r\n", msg->cm_fields[eErrorMsg]);
}
else { /* Ok, we'll accept this message. */
msgnum = CtdlSubmitMsg(msg, valid, "", 0);
if (msgnum > 0L) {
- sprintf(result, "250 Message accepted.\r\n");
+ StrBufPrintf(sSMTP->OneRcpt, "250 Message accepted.\r\n");
}
else {
- sprintf(result, "550 Internal delivery error\r\n");
+ StrBufPrintf(sSMTP->OneRcpt, "550 Internal delivery error\r\n");
}
}
- /* For SMTP and ESTMP, just print the result message. For LMTP, we
+ /* For SMTP and ESMTP, just print the result message. For LMTP, we
* have to print one result message for each recipient. Since there
* is nothing in Citadel which would cause different recipients to
* have different results, we can get away with just spitting out the
*/
if (sSMTP->is_lmtp) {
for (i=0; i<sSMTP->number_of_recipients; ++i) {
- cprintf("%s", result);
+ cputbuf(sSMTP->OneRcpt);
}
}
else {
- cprintf("%s", result);
+ cputbuf(sSMTP->OneRcpt);
}
- /* Write something to the syslog (which may or may not be where the
+ /* Write something to the syslog(which may or may not be where the
* rest of the Citadel logs are going; some sysadmins want LOG_MAIL).
*/
- if (enable_syslog) {
- syslog((LOG_MAIL | LOG_INFO),
- "%ld: from=<%s>, nrcpts=%d, relay=%s [%s], stat=%s",
- msgnum,
- sSMTP->from,
- sSMTP->number_of_recipients,
- CC->cs_host,
- CC->cs_addr,
- result
- );
- }
+ syslog((LOG_MAIL | LOG_INFO),
+ "%ld: from=<%s>, nrcpts=%d, relay=%s [%s], stat=%s",
+ msgnum,
+ ChrPtr(sSMTP->from),
+ sSMTP->number_of_recipients,
+ CCC->cs_host,
+ CCC->cs_addr,
+ ChrPtr(sSMTP->OneRcpt)
+ );
/* Clean up */
- CtdlFreeMessage(msg);
+ CM_Free(msg);
free_recipients(valid);
- smtp_data_clear(); /* clear out the buffers now */
+ smtp_data_clear(0, 0); /* clear out the buffers now */
}
/*
- * implements the STARTTLS command (Citadel API version)
+ * implements the STARTTLS command
*/
-void smtp_starttls(void)
+void smtp_starttls(long offset, long flags)
{
char ok_response[SIZ];
char nosup_response[SIZ];
char error_response[SIZ];
- sprintf(ok_response,
- "220 Begin TLS negotiation now\r\n");
- sprintf(nosup_response,
- "554 TLS not supported here\r\n");
- sprintf(error_response,
- "554 Internal error\r\n");
+ sprintf(ok_response, "220 Begin TLS negotiation now\r\n");
+ sprintf(nosup_response, "554 TLS not supported here\r\n");
+ sprintf(error_response, "554 Internal error\r\n");
CtdlModuleStartCryptoMsgs(ok_response, nosup_response, error_response);
- smtp_rset(0);
+ smtp_rset(0, 0);
}
-
/*
- * Main command loop for SMTP sessions.
+ * Main command loop for SMTP server sessions.
*/
-void smtp_command_loop(void) {
- char cmdbuf[SIZ];
+void smtp_command_loop(void)
+{
+ static const ConstStr AuthPlainStr = {HKEY("AUTH PLAIN")};
+ struct CitContext *CCC = CC;
citsmtp *sSMTP = SMTP;
+ const char *pch, *pchs;
+ long i;
+ char CMD[MaxSMTPCmdLen + 1];
if (sSMTP == NULL) {
- CtdlLogPrintf(CTDL_EMERG, "Session SMTP data is null. WTF? We will crash now.\n");
+ syslog(LOG_EMERG, "Session SMTP data is null. WTF? We will crash now.");
+ abort();
}
- time(&CC->lastcmd);
- memset(cmdbuf, 0, sizeof cmdbuf); /* Clear it, just in case */
- if (client_getln(cmdbuf, sizeof cmdbuf) < 1) {
- CtdlLogPrintf(CTDL_CRIT, "Client disconnected: ending session.\n");
- CC->kill_me = 1;
+ time(&CCC->lastcmd);
+ if (CtdlClientGetLine(sSMTP->Cmd) < 1) {
+ syslog(LOG_CRIT, "SMTP: client disconnected: ending session.");
+ CC->kill_me = KILLME_CLIENT_DISCONNECTED;
return;
}
- CtdlLogPrintf(CTDL_INFO, "SMTP server: %s\n", cmdbuf);
- while (strlen(cmdbuf) < 5) strcat(cmdbuf, " ");
+ syslog(LOG_DEBUG, "SMTP server: %s", ChrPtr(sSMTP->Cmd));
if (sSMTP->command_state == smtp_user) {
- smtp_get_user(cmdbuf);
- }
-
- else if (sSMTP->command_state == smtp_password) {
- smtp_get_pass(cmdbuf);
- }
-
- else if (sSMTP->command_state == smtp_plain) {
- smtp_try_plain(cmdbuf);
- }
-
- else if (!strncasecmp(cmdbuf, "AUTH", 4)) {
- smtp_auth(&cmdbuf[5]);
- }
-
- else if (!strncasecmp(cmdbuf, "DATA", 4)) {
- smtp_data();
- }
-
- else if (!strncasecmp(cmdbuf, "HELO", 4)) {
- smtp_hello(&cmdbuf[5], 0);
- }
-
- else if (!strncasecmp(cmdbuf, "EHLO", 4)) {
- smtp_hello(&cmdbuf[5], 1);
- }
-
- else if (!strncasecmp(cmdbuf, "LHLO", 4)) {
- smtp_hello(&cmdbuf[5], 2);
- }
-
- else if (!strncasecmp(cmdbuf, "HELP", 4)) {
- smtp_help();
- }
-
- else if (!strncasecmp(cmdbuf, "MAIL", 4)) {
- smtp_mail(&cmdbuf[5]);
- }
-
- else if (!strncasecmp(cmdbuf, "NOOP", 4)) {
- cprintf("250 NOOP\r\n");
- }
-
- else if (!strncasecmp(cmdbuf, "QUIT", 4)) {
- cprintf("221 Goodbye...\r\n");
- CC->kill_me = 1;
- return;
- }
-
- else if (!strncasecmp(cmdbuf, "RCPT", 4)) {
- smtp_rcpt(&cmdbuf[5]);
- }
-
- else if (!strncasecmp(cmdbuf, "RSET", 4)) {
- smtp_rset(1);
- }
-#ifdef HAVE_OPENSSL
- else if (!strcasecmp(cmdbuf, "STARTTLS")) {
- smtp_starttls();
- }
-#endif
- else {
- cprintf("502 I'm afraid I can't do that.\r\n");
- }
-
-
-}
-
-
-
-
-/*****************************************************************************/
-/* SMTP CLIENT (OUTBOUND PROCESSING) STUFF */
-/*****************************************************************************/
-
-
-
-/*
- * smtp_try()
- *
- * Called by smtp_do_procmsg() to attempt delivery to one SMTP host
- *
- */
-void smtp_try(const char *key, const char *addr, int *status,
- char *dsn, size_t n, long msgnum, char *envelope_from)
-{
- int sock = (-1);
- char mxhosts[1024];
- int num_mxhosts;
- int mx;
- int i;
- char user[1024], node[1024], name[1024];
- char buf[1024];
- char mailfrom[1024];
- char mx_user[256];
- char mx_pass[256];
- char mx_host[256];
- char mx_port[256];
- int lp, rp;
- char *msgtext;
- const char *ptr;
- size_t msg_size;
- int scan_done;
- CitContext *CCC=CC;
-
-
- /* Parse out the host portion of the recipient address */
- process_rfc822_addr(addr, user, node, name);
-
- CtdlLogPrintf(CTDL_DEBUG, "SMTP client: Attempting delivery to <%s> @ <%s> (%s)\n",
- user, node, name);
-
- /* Load the message out of the database */
- CCC->redirect_buffer = NewStrBufPlain(NULL, SIZ);
- CtdlOutputMsg(msgnum, MT_RFC822, HEADERS_ALL, 0, 1, NULL, (ESC_DOT|SUPPRESS_ENV_TO) );
- msg_size = StrLength(CC->redirect_buffer);
- msgtext = SmashStrBuf(&CC->redirect_buffer);
-
- /* If no envelope_from is supplied, extract one from the message */
- if ( (envelope_from == NULL) || (IsEmptyStr(envelope_from)) ) {
- strcpy(mailfrom, "");
- scan_done = 0;
- ptr = msgtext;
- do {
- if (ptr = cmemreadline(ptr, buf, sizeof buf), *ptr == 0) {
- scan_done = 1;
- }
- if (!strncasecmp(buf, "From:", 5)) {
- safestrncpy(mailfrom, &buf[5], sizeof mailfrom);
- striplt(mailfrom);
- for (i=0; mailfrom[i]; ++i) {
- if (!isprint(mailfrom[i])) {
- strcpy(&mailfrom[i], &mailfrom[i+1]);
- i=0;
- }
- }
-
- /* Strip out parenthesized names */
- lp = (-1);
- rp = (-1);
- for (i=0; mailfrom[i]; ++i) {
- if (mailfrom[i] == '(') lp = i;
- if (mailfrom[i] == ')') rp = i;
- }
- if ((lp>0)&&(rp>lp)) {
- strcpy(&mailfrom[lp-1], &mailfrom[rp+1]);
- }
-
- /* Prefer brokketized names */
- lp = (-1);
- rp = (-1);
- for (i=0; mailfrom[i]; ++i) {
- if (mailfrom[i] == '<') lp = i;
- if (mailfrom[i] == '>') rp = i;
- }
- if ( (lp>=0) && (rp>lp) ) {
- mailfrom[rp] = 0;
- strcpy(mailfrom, &mailfrom[lp]);
- }
-
- scan_done = 1;
- }
- } while (scan_done == 0);
- if (IsEmptyStr(mailfrom)) strcpy(mailfrom, "someone@somewhere.org");
- stripallbut(mailfrom, '<', '>');
- envelope_from = mailfrom;
- }
-
- /* Figure out what mail exchanger host we have to connect to */
- num_mxhosts = getmx(mxhosts, node);
- CtdlLogPrintf(CTDL_DEBUG, "Number of MX hosts for <%s> is %d [%s]\n", node, num_mxhosts, mxhosts);
- if (num_mxhosts < 1) {
- *status = 5;
- snprintf(dsn, SIZ, "No MX hosts found for <%s>", node);
- return;
- }
-
- sock = (-1);
- for (mx=0; (mx<num_mxhosts && sock < 0); ++mx) {
- char *endpart;
- extract_token(buf, mxhosts, mx, '|', sizeof buf);
- strcpy(mx_user, "");
- strcpy(mx_pass, "");
- if (num_tokens(buf, '@') > 1) {
- strcpy (mx_user, buf);
- endpart = strrchr(mx_user, '@');
- *endpart = '\0';
- strcpy (mx_host, endpart + 1);
- endpart = strrchr(mx_user, ':');
- if (endpart != NULL) {
- strcpy(mx_pass, endpart+1);
- *endpart = '\0';
- }
- }
+ if (!strncmp(ChrPtr(sSMTP->Cmd), AuthPlainStr.Key, AuthPlainStr.len))
+ smtp_try_plain(0, 0);
else
- strcpy (mx_host, buf);
- endpart = strrchr(mx_host, ':');
- if (endpart != 0){
- *endpart = '\0';
- strcpy(mx_port, endpart + 1);
- }
- else {
- strcpy(mx_port, "25");
- }
- CtdlLogPrintf(CTDL_DEBUG, "SMTP client: connecting to %s : %s ...\n", mx_host, mx_port);
- sock = sock_connect(mx_host, mx_port, "tcp");
- snprintf(dsn, SIZ, "Could not connect: %s", strerror(errno));
- if (sock >= 0) CtdlLogPrintf(CTDL_DEBUG, "SMTP client: connected!\n");
- if (sock < 0) {
- if (errno > 0) {
- snprintf(dsn, SIZ, "%s", strerror(errno));
- }
- else {
- snprintf(dsn, SIZ, "Unable to connect to %s : %s\n", mx_host, mx_port);
- }
- }
- }
-
- if (sock < 0) {
- *status = 4; /* dsn is already filled in */
- return;
- }
-
- CCC->sReadBuf = NewStrBuf();
- CCC->sMigrateBuf = NewStrBuf();
- CCC->sPos = NULL;
-
- /* Process the SMTP greeting from the server */
- if (ml_sock_gets(&sock, buf) < 0) {
- *status = 4;
- strcpy(dsn, "Connection broken during SMTP conversation");
- goto bail;
- }
- CtdlLogPrintf(CTDL_DEBUG, "<%s\n", buf);
- if (buf[0] != '2') {
- if (buf[0] == '4') {
- *status = 4;
- safestrncpy(dsn, &buf[4], 1023);
- goto bail;
- }
- else {
- *status = 5;
- safestrncpy(dsn, &buf[4], 1023);
- goto bail;
- }
- }
-
- /* At this point we know we are talking to a real SMTP server */
-
- /* Do a EHLO command. If it fails, try the HELO command. */
- snprintf(buf, sizeof buf, "EHLO %s\r\n", config.c_fqdn);
- CtdlLogPrintf(CTDL_DEBUG, ">%s", buf);
- sock_write(&sock, buf, strlen(buf));
- if (ml_sock_gets(&sock, buf) < 0) {
- *status = 4;
- strcpy(dsn, "Connection broken during SMTP HELO");
- goto bail;
- }
- CtdlLogPrintf(CTDL_DEBUG, "<%s\n", buf);
- if (buf[0] != '2') {
- snprintf(buf, sizeof buf, "HELO %s\r\n", config.c_fqdn);
- CtdlLogPrintf(CTDL_DEBUG, ">%s", buf);
- sock_write(&sock, buf, strlen(buf));
- if (ml_sock_gets(&sock, buf) < 0) {
- *status = 4;
- strcpy(dsn, "Connection broken during SMTP HELO");
- goto bail;
- }
- }
- if (buf[0] != '2') {
- if (buf[0] == '4') {
- *status = 4;
- safestrncpy(dsn, &buf[4], 1023);
- goto bail;
- }
- else {
- *status = 5;
- safestrncpy(dsn, &buf[4], 1023);
- goto bail;
- }
- }
-
- /* Do an AUTH command if necessary */
- if (!IsEmptyStr(mx_user)) {
- char encoded[1024];
- sprintf(buf, "%s%c%s%c%s", mx_user, '\0', mx_user, '\0', mx_pass);
- CtdlEncodeBase64(encoded, buf, strlen(mx_user) + strlen(mx_user) + strlen(mx_pass) + 2, 0);
- snprintf(buf, sizeof buf, "AUTH PLAIN %s\r\n", encoded);
- CtdlLogPrintf(CTDL_DEBUG, ">%s", buf);
- sock_write(&sock, buf, strlen(buf));
- if (ml_sock_gets(&sock, buf) < 0) {
- *status = 4;
- strcpy(dsn, "Connection broken during SMTP AUTH");
- goto bail;
- }
- CtdlLogPrintf(CTDL_DEBUG, "<%s\n", buf);
- if (buf[0] != '2') {
- if (buf[0] == '4') {
- *status = 4;
- safestrncpy(dsn, &buf[4], 1023);
- goto bail;
- }
- else {
- *status = 5;
- safestrncpy(dsn, &buf[4], 1023);
- goto bail;
- }
- }
- }
-
- /* previous command succeeded, now try the MAIL FROM: command */
- snprintf(buf, sizeof buf, "MAIL FROM:<%s>\r\n", envelope_from);
- CtdlLogPrintf(CTDL_DEBUG, ">%s", buf);
- sock_write(&sock, buf, strlen(buf));
- if (ml_sock_gets(&sock, buf) < 0) {
- *status = 4;
- strcpy(dsn, "Connection broken during SMTP MAIL");
- goto bail;
- }
- CtdlLogPrintf(CTDL_DEBUG, "<%s\n", buf);
- if (buf[0] != '2') {
- if (buf[0] == '4') {
- *status = 4;
- safestrncpy(dsn, &buf[4], 1023);
- goto bail;
- }
- else {
- *status = 5;
- safestrncpy(dsn, &buf[4], 1023);
- goto bail;
- }
- }
-
- /* MAIL succeeded, now try the RCPT To: command */
- snprintf(buf, sizeof buf, "RCPT TO:<%s@%s>\r\n", user, node);
- CtdlLogPrintf(CTDL_DEBUG, ">%s", buf);
- sock_write(&sock, buf, strlen(buf));
- if (ml_sock_gets(&sock, buf) < 0) {
- *status = 4;
- strcpy(dsn, "Connection broken during SMTP RCPT");
- goto bail;
- }
- CtdlLogPrintf(CTDL_DEBUG, "<%s\n", buf);
- if (buf[0] != '2') {
- if (buf[0] == '4') {
- *status = 4;
- safestrncpy(dsn, &buf[4], 1023);
- goto bail;
- }
- else {
- *status = 5;
- safestrncpy(dsn, &buf[4], 1023);
- goto bail;
- }
- }
-
- /* RCPT succeeded, now try the DATA command */
- CtdlLogPrintf(CTDL_DEBUG, ">DATA\n");
- sock_write(&sock, "DATA\r\n", 6);
- if (ml_sock_gets(&sock, buf) < 0) {
- *status = 4;
- strcpy(dsn, "Connection broken during SMTP DATA");
- goto bail;
- }
- CtdlLogPrintf(CTDL_DEBUG, "<%s\n", buf);
- if (buf[0] != '3') {
- if (buf[0] == '4') {
- *status = 3;
- safestrncpy(dsn, &buf[4], 1023);
- goto bail;
- }
- else {
- *status = 5;
- safestrncpy(dsn, &buf[4], 1023);
- goto bail;
- }
- }
-
- /* If we reach this point, the server is expecting data.*/
- sock_write(&sock, msgtext, msg_size);
- if (msgtext[msg_size-1] != 10) {
- CtdlLogPrintf(CTDL_WARNING, "Possible problem: message did not "
- "correctly terminate. (expecting 0x10, got 0x%02x)\n",
- buf[msg_size-1]);
- sock_write(&sock, "\r\n", 2);
- }
-
- sock_write(&sock, ".\r\n", 3);
- if (ml_sock_gets(&sock, buf) < 0) {
- *status = 4;
- strcpy(dsn, "Connection broken during SMTP message transmit");
- goto bail;
- }
- CtdlLogPrintf(CTDL_DEBUG, "%s\n", buf);
- if (buf[0] != '2') {
- if (buf[0] == '4') {
- *status = 4;
- safestrncpy(dsn, &buf[4], 1023);
- goto bail;
- }
- else {
- *status = 5;
- safestrncpy(dsn, &buf[4], 1023);
- goto bail;
- }
- }
-
- /* We did it! */
- safestrncpy(dsn, &buf[4], 1023);
- *status = 2;
-
- CtdlLogPrintf(CTDL_DEBUG, ">QUIT\n");
- sock_write(&sock, "QUIT\r\n", 6);
- ml_sock_gets(&sock, buf);
- CtdlLogPrintf(CTDL_DEBUG, "<%s\n", buf);
- CtdlLogPrintf(CTDL_INFO, "SMTP client: delivery to <%s> @ <%s> (%s) succeeded\n",
- user, node, name);
-
-bail: free(msgtext);
- FreeStrBuf(&CCC->sReadBuf);
- FreeStrBuf(&CCC->sMigrateBuf);
- if (sock != -1)
- sock_close(sock);
-
- /* Write something to the syslog (which may or may not be where the
- * rest of the Citadel logs are going; some sysadmins want LOG_MAIL).
- */
- if (enable_syslog) {
- syslog((LOG_MAIL | LOG_INFO),
- "%ld: to=<%s>, relay=%s, stat=%s",
- msgnum,
- addr,
- mx_host,
- dsn
- );
- }
-
- return;
-}
-
-
-
-/*
- * smtp_do_bounce() is caled by smtp_do_procmsg() to scan a set of delivery
- * instructions for "5" codes (permanent fatal errors) and produce/deliver
- * a "bounce" message (delivery status notification).
- */
-void smtp_do_bounce(char *instr) {
- int i;
- int lines;
- int status;
- char buf[1024];
- char key[1024];
- char addr[1024];
- char dsn[1024];
- char bounceto[1024];
- StrBuf *boundary;
- int num_bounces = 0;
- int bounce_this = 0;
- long bounce_msgid = (-1);
- time_t submitted = 0L;
- struct CtdlMessage *bmsg = NULL;
- int give_up = 0;
- struct recptypes *valid;
- int successful_bounce = 0;
- static int seq = 0;
- StrBuf *BounceMB;
- long omsgid = (-1);
-
- CtdlLogPrintf(CTDL_DEBUG, "smtp_do_bounce() called\n");
- strcpy(bounceto, "");
- boundary = NewStrBufPlain(HKEY("=_Citadel_Multipart_"));
- StrBufAppendPrintf(boundary, "%s_%04x%04x", config.c_fqdn, getpid(), ++seq);
- lines = num_tokens(instr, '\n');
-
- /* See if it's time to give up on delivery of this message */
- for (i=0; i<lines; ++i) {
- extract_token(buf, instr, i, '\n', sizeof buf);
- extract_token(key, buf, 0, '|', sizeof key);
- extract_token(addr, buf, 1, '|', sizeof addr);
- if (!strcasecmp(key, "submitted")) {
- submitted = atol(addr);
- }
- }
-
- if ( (time(NULL) - submitted) > SMTP_GIVE_UP ) {
- give_up = 1;
- }
-
- /* Start building our bounce message */
-
- bmsg = (struct CtdlMessage *) malloc(sizeof(struct CtdlMessage));
- if (bmsg == NULL) return;
- memset(bmsg, 0, sizeof(struct CtdlMessage));
- BounceMB = NewStrBufPlain(NULL, 1024);
-
- bmsg->cm_magic = CTDLMESSAGE_MAGIC;
- bmsg->cm_anon_type = MES_NORMAL;
- bmsg->cm_format_type = FMT_RFC822;
- bmsg->cm_fields['A'] = strdup("Citadel");
- bmsg->cm_fields['O'] = strdup(MAILROOM);
- bmsg->cm_fields['N'] = strdup(config.c_nodename);
- bmsg->cm_fields['U'] = strdup("Delivery Status Notification (Failure)");
- StrBufAppendBufPlain(BounceMB, HKEY("Content-type: multipart/mixed; boundary=\""), 0);
- StrBufAppendBuf(BounceMB, boundary, 0);
- StrBufAppendBufPlain(BounceMB, HKEY("\"\r\n"), 0);
- StrBufAppendBufPlain(BounceMB, HKEY("MIME-Version: 1.0\r\n"), 0);
- StrBufAppendBufPlain(BounceMB, HKEY("X-Mailer: " CITADEL "\r\n"), 0);
- StrBufAppendBufPlain(BounceMB, HKEY("\r\nThis is a multipart message in MIME format.\r\n\r\n"), 0);
- StrBufAppendBufPlain(BounceMB, HKEY("--"), 0);
- StrBufAppendBuf(BounceMB, boundary, 0);
- StrBufAppendBufPlain(BounceMB, HKEY("\r\n"), 0);
- StrBufAppendBufPlain(BounceMB, HKEY("Content-type: text/plain\r\n\r\n"), 0);
-
- if (give_up) StrBufAppendBufPlain(BounceMB, HKEY(
-"A message you sent could not be delivered to some or all of its recipients\n"
-"due to prolonged unavailability of its destination(s).\n"
-"Giving up on the following addresses:\n\n"
- ), 0);
-
- else StrBufAppendBufPlain(BounceMB, HKEY(
-"A message you sent could not be delivered to some or all of its recipients.\n"
-"The following addresses were undeliverable:\n\n"
- ), 0);
-
- /*
- * Now go through the instructions checking for stuff.
- */
- for (i=0; i<lines; ++i) {
- long addrlen;
- long dsnlen;
- extract_token(buf, instr, i, '\n', sizeof buf);
- extract_token(key, buf, 0, '|', sizeof key);
- addrlen = extract_token(addr, buf, 1, '|', sizeof addr);
- status = extract_int(buf, 2);
- dsnlen = extract_token(dsn, buf, 3, '|', sizeof dsn);
- bounce_this = 0;
-
- CtdlLogPrintf(CTDL_DEBUG, "key=<%s> addr=<%s> status=%d dsn=<%s>\n",
- key, addr, status, dsn);
-
- if (!strcasecmp(key, "bounceto")) {
- strcpy(bounceto, addr);
- }
-
- if (!strcasecmp(key, "msgid")) {
- omsgid = atol(addr);
- }
-
- if (!strcasecmp(key, "remote")) {
- if (status == 5) bounce_this = 1;
- if (give_up) bounce_this = 1;
- }
-
- if (bounce_this) {
- ++num_bounces;
-
- StrBufAppendBufPlain(BounceMB, addr, addrlen, 0);
- StrBufAppendBufPlain(BounceMB, HKEY(": "), 0);
- StrBufAppendBufPlain(BounceMB, dsn, dsnlen, 0);
- StrBufAppendBufPlain(BounceMB, HKEY("\r\n"), 0);
-
- remove_token(instr, i, '\n');
- --i;
- --lines;
- }
- }
-
- /* Attach the original message */
- if (omsgid >= 0) {
- StrBufAppendBufPlain(BounceMB, HKEY("--"), 0);
- StrBufAppendBuf(BounceMB, boundary, 0);
- StrBufAppendBufPlain(BounceMB, HKEY("\r\n"), 0);
- StrBufAppendBufPlain(BounceMB, HKEY("Content-type: message/rfc822\r\n"), 0);
- StrBufAppendBufPlain(BounceMB, HKEY("Content-Transfer-Encoding: 7bit\r\n"), 0);
- StrBufAppendBufPlain(BounceMB, HKEY("Content-Disposition: inline\r\n"), 0);
- StrBufAppendBufPlain(BounceMB, HKEY("\r\n"), 0);
-
- CC->redirect_buffer = NewStrBufPlain(NULL, SIZ);
- CtdlOutputMsg(omsgid, MT_RFC822, HEADERS_ALL, 0, 1, NULL, 0);
- StrBufAppendBuf(BounceMB, CC->redirect_buffer, 0);
- FreeStrBuf(&CC->redirect_buffer);
- }
-
- /* Close the multipart MIME scope */
- StrBufAppendBufPlain(BounceMB, HKEY("--"), 0);
- StrBufAppendBuf(BounceMB, boundary, 0);
- StrBufAppendBufPlain(BounceMB, HKEY("--\r\n"), 0);
- bmsg->cm_fields['A'] = SmashStrBuf(&BounceMB);
- /* Deliver the bounce if there's anything worth mentioning */
- CtdlLogPrintf(CTDL_DEBUG, "num_bounces = %d\n", num_bounces);
- if (num_bounces > 0) {
-
- /* First try the user who sent the message */
- CtdlLogPrintf(CTDL_DEBUG, "bounce to user? <%s>\n", bounceto);
- if (IsEmptyStr(bounceto)) {
- CtdlLogPrintf(CTDL_ERR, "No bounce address specified\n");
- bounce_msgid = (-1L);
- }
-
- /* Can we deliver the bounce to the original sender? */
- valid = validate_recipients(bounceto, smtp_get_Recipients (), 0);
- if (valid != NULL) {
- if (valid->num_error == 0) {
- CtdlSubmitMsg(bmsg, valid, "", QP_EADDR);
- successful_bounce = 1;
- }
- }
-
- /* If not, post it in the Aide> room */
- if (successful_bounce == 0) {
- CtdlSubmitMsg(bmsg, NULL, config.c_aideroom, QP_EADDR);
- }
-
- /* Free up the memory we used */
- if (valid != NULL) {
- free_recipients(valid);
- }
- }
- FreeStrBuf(&boundary);
- CtdlFreeMessage(bmsg);
- CtdlLogPrintf(CTDL_DEBUG, "Done processing bounces\n");
-}
-
-
-/*
- * smtp_purge_completed_deliveries() is caled by smtp_do_procmsg() to scan a
- * set of delivery instructions for completed deliveries and remove them.
- *
- * It returns the number of incomplete deliveries remaining.
- */
-int smtp_purge_completed_deliveries(char *instr) {
- int i;
- int lines;
- int status;
- char buf[1024];
- char key[1024];
- char addr[1024];
- char dsn[1024];
- int completed;
- int incomplete = 0;
-
- lines = num_tokens(instr, '\n');
- for (i=0; i<lines; ++i) {
- extract_token(buf, instr, i, '\n', sizeof buf);
- extract_token(key, buf, 0, '|', sizeof key);
- extract_token(addr, buf, 1, '|', sizeof addr);
- status = extract_int(buf, 2);
- extract_token(dsn, buf, 3, '|', sizeof dsn);
-
- completed = 0;
-
- if (!strcasecmp(key, "remote")) {
- if (status == 2) completed = 1;
- else ++incomplete;
- }
-
- if (completed) {
- remove_token(instr, i, '\n');
- --i;
- --lines;
- }
- }
-
- return(incomplete);
-}
-
-
-/*
- * smtp_do_procmsg()
- *
- * Called by smtp_do_queue() to handle an individual message.
- */
-void smtp_do_procmsg(long msgnum, void *userdata) {
- struct CtdlMessage *msg = NULL;
- char *instr = NULL;
- char *results = NULL;
- int i;
- int lines;
- int status;
- char buf[1024];
- char key[1024];
- char addr[1024];
- char dsn[1024];
- char envelope_from[1024];
- long text_msgid = (-1);
- int incomplete_deliveries_remaining;
- time_t attempted = 0L;
- time_t last_attempted = 0L;
- time_t retry = SMTP_RETRY_INTERVAL;
-
- CtdlLogPrintf(CTDL_DEBUG, "SMTP client: smtp_do_procmsg(%ld)\n", msgnum);
- strcpy(envelope_from, "");
-
- msg = CtdlFetchMessage(msgnum, 1);
- if (msg == NULL) {
- CtdlLogPrintf(CTDL_ERR, "SMTP client: tried %ld but no such message!\n", msgnum);
+ smtp_get_user(0);
return;
}
- instr = strdup(msg->cm_fields['M']);
- CtdlFreeMessage(msg);
-
- /* Strip out the headers amd any other non-instruction line */
- lines = num_tokens(instr, '\n');
- for (i=0; i<lines; ++i) {
- extract_token(buf, instr, i, '\n', sizeof buf);
- if (num_tokens(buf, '|') < 2) {
- remove_token(instr, i, '\n');
- --lines;
- --i;
- }
- }
-
- /* Learn the message ID and find out about recent delivery attempts */
- lines = num_tokens(instr, '\n');
- for (i=0; i<lines; ++i) {
- extract_token(buf, instr, i, '\n', sizeof buf);
- extract_token(key, buf, 0, '|', sizeof key);
- if (!strcasecmp(key, "msgid")) {
- text_msgid = extract_long(buf, 1);
- }
- if (!strcasecmp(key, "envelope_from")) {
- extract_token(envelope_from, buf, 1, '|', sizeof envelope_from);
- }
- if (!strcasecmp(key, "retry")) {
- /* double the retry interval after each attempt */
- retry = extract_long(buf, 1) * 2L;
- if (retry > SMTP_RETRY_MAX) {
- retry = SMTP_RETRY_MAX;
- }
- remove_token(instr, i, '\n');
- }
- if (!strcasecmp(key, "attempted")) {
- attempted = extract_long(buf, 1);
- if (attempted > last_attempted)
- last_attempted = attempted;
- }
- }
-
- /*
- * Postpone delivery if we've already tried recently.
- */
- if (((time(NULL) - last_attempted) < retry) && (run_queue_now == 0)) {
- CtdlLogPrintf(CTDL_DEBUG, "SMTP client: Retry time not yet reached.\n");
- free(instr);
+ else if (sSMTP->command_state == smtp_password) {
+ smtp_get_pass(0, 0);
return;
}
-
- /*
- * Bail out if there's no actual message associated with this
- */
- if (text_msgid < 0L) {
- CtdlLogPrintf(CTDL_ERR, "SMTP client: no 'msgid' directive found!\n");
- free(instr);
+ else if (sSMTP->command_state == smtp_plain) {
+ smtp_try_plain(0, 0);
return;
}
- /* Plow through the instructions looking for 'remote' directives and
- * a status of 0 (no delivery yet attempted) or 3/4 (transient errors
- * were experienced and it's time to try again)
- */
- lines = num_tokens(instr, '\n');
- for (i=0; i<lines; ++i) {
- extract_token(buf, instr, i, '\n', sizeof buf);
- extract_token(key, buf, 0, '|', sizeof key);
- extract_token(addr, buf, 1, '|', sizeof addr);
- status = extract_int(buf, 2);
- extract_token(dsn, buf, 3, '|', sizeof dsn);
- if ( (!strcasecmp(key, "remote"))
- && ((status==0)||(status==3)||(status==4)) ) {
-
- /* Remove this "remote" instruction from the set,
- * but replace the set's final newline if
- * remove_token() stripped it. It has to be there.
- */
- remove_token(instr, i, '\n');
- if (instr[strlen(instr)-1] != '\n') {
- strcat(instr, "\n");
- }
-
- --i;
- --lines;
- CtdlLogPrintf(CTDL_DEBUG, "SMTP client: Trying <%s>\n", addr);
- smtp_try(key, addr, &status, dsn, sizeof dsn, text_msgid, envelope_from);
- if (status != 2) {
- if (results == NULL) {
- results = malloc(1024);
- memset(results, 0, 1024);
- }
- else {
- results = realloc(results, strlen(results) + 1024);
- }
- snprintf(&results[strlen(results)], 1024,
- "%s|%s|%d|%s\n",
- key, addr, status, dsn);
- }
- }
- }
-
- if (results != NULL) {
- instr = realloc(instr, strlen(instr) + strlen(results) + 2);
- strcat(instr, results);
- free(results);
- }
-
-
- /* Generate 'bounce' messages */
- smtp_do_bounce(instr);
-
- /* Go through the delivery list, deleting completed deliveries */
- incomplete_deliveries_remaining =
- smtp_purge_completed_deliveries(instr);
-
-
- /*
- * No delivery instructions remain, so delete both the instructions
- * message and the message message.
- */
- if (incomplete_deliveries_remaining <= 0) {
- long delmsgs[2];
- delmsgs[0] = msgnum;
- delmsgs[1] = text_msgid;
- CtdlDeleteMessages(SMTP_SPOOLOUT_ROOM, delmsgs, 2, "");
- }
-
- /*
- * Uncompleted delivery instructions remain, so delete the old
- * instructions and replace with the updated ones.
- */
- if (incomplete_deliveries_remaining > 0) {
- CtdlDeleteMessages(SMTP_SPOOLOUT_ROOM, &msgnum, 1, "");
- msg = malloc(sizeof(struct CtdlMessage));
- memset(msg, 0, sizeof(struct CtdlMessage));
- msg->cm_magic = CTDLMESSAGE_MAGIC;
- msg->cm_anon_type = MES_NORMAL;
- msg->cm_format_type = FMT_RFC822;
- msg->cm_fields['M'] = malloc(strlen(instr)+SIZ);
- snprintf(msg->cm_fields['M'],
- strlen(instr)+SIZ,
- "Content-type: %s\n\n%s\n"
- "attempted|%ld\n"
- "retry|%ld\n",
- SPOOLMIME, instr, (long)time(NULL), (long)retry );
- CtdlSubmitMsg(msg, NULL, SMTP_SPOOLOUT_ROOM, QP_EADDR);
- CtdlFreeMessage(msg);
+ pchs = pch = ChrPtr(sSMTP->Cmd);
+ i = 0;
+ while ((*pch != '\0') &&
+ (!isblank(*pch)) &&
+ (pch - pchs <= MaxSMTPCmdLen))
+ {
+ CMD[i] = toupper(*pch);
+ pch ++;
+ i++;
}
+ CMD[i] = '\0';
- free(instr);
-}
-
-
+ if ((*pch == '\0') ||
+ (isblank(*pch)))
+ {
+ void *v;
+ if (GetHash(SMTPCmds, CMD, i, &v) &&
+ (v != NULL))
+ {
+ smtp_handler_hook *h = (smtp_handler_hook*) v;
-/*
- * smtp_do_queue()
- *
- * Run through the queue sending out messages.
- */
-void *smtp_do_queue(void *arg) {
- int num_processed = 0;
- struct CitContext smtp_queue_CC;
+ if (isblank(pchs[i]))
+ i++;
- CtdlFillSystemContext(&smtp_queue_CC, "SMTP Send");
- citthread_setspecific(MyConKey, (void *)&smtp_queue_CC );
- CtdlLogPrintf(CTDL_INFO, "SMTP client: processing outbound queue\n");
+ h->h(i, h->Flags);
- if (CtdlGetRoom(&CC->room, SMTP_SPOOLOUT_ROOM) != 0) {
- CtdlLogPrintf(CTDL_ERR, "Cannot find room <%s>\n", SMTP_SPOOLOUT_ROOM);
- }
- else {
- num_processed = CtdlForEachMessage(MSGS_ALL, 0L, NULL, SPOOLMIME, NULL, smtp_do_procmsg, NULL);
+ return;
+ }
}
-
- citthread_mutex_unlock (&smtp_send_lock);
- CtdlLogPrintf(CTDL_INFO, "SMTP client: queue run completed; %d messages processed\n", num_processed);
-
- CtdlClearSystemContext();
- return(NULL);
+ cprintf("502 I'm afraid I can't do that.\r\n");
}
-
-
-/*
- * smtp_queue_thread
- *
- * Create a thread to run the SMTP queue
- *
- * This was created as a response to a situation seen on Uncensored where a bad remote was holding
- * up SMTP sending for long times.
- * Converting to a thread does not fix the problem caused by the bad remote but it does prevent
- * the SMTP sending from stopping housekeeping and the EVT_TIMER event system which in turn prevented
- * other things from happening.
- */
-void smtp_queue_thread (void)
+void smtp_noop(long offest, long Flags)
{
- if (citthread_mutex_trylock (&smtp_send_lock)) {
- CtdlLogPrintf(CTDL_DEBUG, "SMTP queue run already in progress\n");
- }
- else {
- CtdlThreadCreate("SMTP Send", CTDLTHREAD_BIGSTACK, smtp_do_queue, NULL);
- }
+ cprintf("250 NOOP\r\n");
}
-
-
-void smtp_server_going_down (void)
+void smtp_quit(long offest, long Flags)
{
- CtdlLogPrintf(CTDL_DEBUG, "SMTP module clean up for shutdown.\n");
-
- citthread_mutex_destroy (&smtp_send_lock);
-}
-
-
-
-/*****************************************************************************/
-/* SMTP UTILITY COMMANDS */
-/*****************************************************************************/
-
-void cmd_smtp(char *argbuf) {
- char cmd[64];
- char node[256];
- char buf[1024];
- int i;
- int num_mxhosts;
-
- if (CtdlAccessCheck(ac_aide)) return;
-
- extract_token(cmd, argbuf, 0, '|', sizeof cmd);
-
- if (!strcasecmp(cmd, "mx")) {
- extract_token(node, argbuf, 1, '|', sizeof node);
- num_mxhosts = getmx(buf, node);
- cprintf("%d %d MX hosts listed for %s\n",
- LISTING_FOLLOWS, num_mxhosts, node);
- for (i=0; i<num_mxhosts; ++i) {
- extract_token(node, buf, i, '|', sizeof node);
- cprintf("%s\n", node);
- }
- cprintf("000\n");
- return;
- }
-
- else if (!strcasecmp(cmd, "runqueue")) {
- run_queue_now = 1;
- cprintf("%d All outbound SMTP will be retried now.\n", CIT_OK);
- return;
- }
-
- else {
- cprintf("%d Invalid command.\n", ERROR + ILLEGAL_VALUE);
- }
-
+ cprintf("221 Goodbye...\r\n");
+ CC->kill_me = KILLME_CLIENT_LOGGED_OUT;
}
-
-/*
- * Initialize the SMTP outbound queue
- */
-void smtp_init_spoolout(void) {
- struct ctdlroom qrbuf;
-
- /*
- * Create the room. This will silently fail if the room already
- * exists, and that's perfectly ok, because we want it to exist.
- */
- CtdlCreateRoom(SMTP_SPOOLOUT_ROOM, 3, "", 0, 1, 0, VIEW_MAILBOX);
-
- /*
- * Make sure it's set to be a "system room" so it doesn't show up
- * in the <K>nown rooms list for Aides.
- */
- if (CtdlGetRoomLock(&qrbuf, SMTP_SPOOLOUT_ROOM) == 0) {
- qrbuf.QRflags2 |= QR2_SYSTEM;
- CtdlPutRoomLock(&qrbuf);
- }
-}
-
-
-
-
/*****************************************************************************/
/* MODULE INITIALIZATION STUFF */
/*****************************************************************************/
* This cleanup function blows away the temporary memory used by
* the SMTP server.
*/
-void smtp_cleanup_function(void) {
+void smtp_cleanup_function(void)
+{
+ citsmtp *sSMTP = SMTP;
+ struct CitContext *CCC = CC;
/* Don't do this stuff if this is not an SMTP session! */
- if (CC->h_command_function != smtp_command_loop) return;
+ if (CCC->h_command_function != smtp_command_loop) return;
- CtdlLogPrintf(CTDL_DEBUG, "Performing SMTP cleanup hook\n");
- free(SMTP);
-}
+ syslog(LOG_DEBUG, "Performing SMTP cleanup hook");
+ FreeStrBuf(&sSMTP->Cmd);
+ FreeStrBuf(&sSMTP->helo_node);
+ FreeStrBuf(&sSMTP->from);
+ FreeStrBuf(&sSMTP->recipients);
+ FreeStrBuf(&sSMTP->OneRcpt);
+ FreeStrBuf(&sSMTP->preferred_sender_email);
+ FreeStrBuf(&sSMTP->preferred_sender_name);
+ free(sSMTP);
+}
const char *CitadelServiceSMTP_MTA="SMTP-MTA";
const char *CitadelServiceSMTPS_MTA="SMTPs-MTA";
const char *CitadelServiceSMTP_LMTP="LMTP";
const char *CitadelServiceSMTP_LMTP_UNF="LMTP-UnF";
+
CTDL_MODULE_INIT(smtp)
{
if (!threading)
{
- CtdlRegisterServiceHook(config.c_smtp_port, /* SMTP MTA */
+ SMTPCmds = NewHash(1, NULL);
+
+ RegisterSmtpCMD("AUTH", smtp_auth, 0);
+ RegisterSmtpCMD("DATA", smtp_data, 0);
+ RegisterSmtpCMD("HELO", smtp_hello, HELO);
+ RegisterSmtpCMD("EHLO", smtp_hello, EHLO);
+ RegisterSmtpCMD("LHLO", smtp_hello, LHLO);
+ RegisterSmtpCMD("HELP", smtp_help, 0);
+ RegisterSmtpCMD("MAIL", smtp_mail, 0);
+ RegisterSmtpCMD("NOOP", smtp_noop, 0);
+ RegisterSmtpCMD("QUIT", smtp_quit, 0);
+ RegisterSmtpCMD("RCPT", smtp_rcpt, 0);
+ RegisterSmtpCMD("RSET", smtp_rset, 1);
+#ifdef HAVE_OPENSSL
+ RegisterSmtpCMD("STARTTLS", smtp_starttls, 0);
+#endif
+
+
+ CtdlRegisterServiceHook(CtdlGetConfigInt("c_smtp_port"), /* SMTP MTA */
NULL,
smtp_mta_greeting,
smtp_command_loop,
CitadelServiceSMTP_MTA);
#ifdef HAVE_OPENSSL
- CtdlRegisterServiceHook(config.c_smtps_port,
+ CtdlRegisterServiceHook(CtdlGetConfigInt("c_smtps_port"), /* SMTPS MTA */
NULL,
smtps_greeting,
smtp_command_loop,
CitadelServiceSMTPS_MTA);
#endif
- CtdlRegisterServiceHook(config.c_msa_port, /* SMTP MSA */
+ CtdlRegisterServiceHook(CtdlGetConfigInt("c_msa_port"), /* SMTP MSA */
NULL,
smtp_msa_greeting,
smtp_command_loop,
NULL,
CitadelServiceSMTP_LMTP_UNF);
- smtp_init_spoolout();
- CtdlRegisterSessionHook(smtp_queue_thread, EVT_TIMER);
- CtdlRegisterSessionHook(smtp_cleanup_function, EVT_STOP);
- CtdlRegisterProtoHook(cmd_smtp, "SMTP", "SMTP utility commands");
- CtdlRegisterCleanupHook (smtp_server_going_down);
- citthread_mutex_init (&smtp_send_lock, NULL);
+ CtdlRegisterCleanupHook(smtp_cleanup);
+ CtdlRegisterSessionHook(smtp_cleanup_function, EVT_STOP, PRIO_STOP + 250);
}
- /* return our Subversion id for the Log */
- return "$Id$";
+ /* return our module name for the log */
+ return "smtp";
}
projects / citadel.git / blobdiff