-/* $Id$ */
+/*
+ * $Id$
+ *
+ * This module is an SMTP and ESMTP implementation for the Citadel system.
+ * It is compliant with all of the following:
+ *
+ * RFC 821 - Simple Mail Transfer Protocol
+ * RFC 876 - Survey of SMTP Implementations
+ * RFC 1047 - Duplicate messages and SMTP
+ * RFC 1854 - command pipelining
+ * RFC 1869 - Extended Simple Mail Transfer Protocol
+ * RFC 1870 - SMTP Service Extension for Message Size Declaration
+ * RFC 1893 - Enhanced Mail System Status Codes
+ * RFC 2033 - Local Mail Transfer Protocol
+ * RFC 2034 - SMTP Service Extension for Returning Enhanced Error Codes
+ * RFC 2197 - SMTP Service Extension for Command Pipelining
+ * RFC 2487 - SMTP Service Extension for Secure SMTP over TLS
+ * RFC 2554 - SMTP Service Extension for Authentication
+ * RFC 2821 - Simple Mail Transfer Protocol
+ * RFC 2822 - Internet Message Format
+ * RFC 2920 - SMTP Service Extension for Command Pipelining
+ *
+ */
#include "sysdep.h"
#include <stdlib.h>
#include <pwd.h>
#include <errno.h>
#include <sys/types.h>
-#include <sys/time.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 <time.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
#include "citadel.h"
#include "server.h"
#include "sysdep_decls.h"
#include "support.h"
#include "config.h"
#include "control.h"
-#include "dynloader.h"
+#include "serv_extensions.h"
#include "room_ops.h"
#include "user_ops.h"
#include "policy.h"
#include "genstamp.h"
#include "domain.h"
#include "clientsocket.h"
+#include "locate_host.h"
+
+#ifdef HAVE_OPENSSL
+#include "serv_crypto.h"
+#endif
+
+#ifndef HAVE_SNPRINTF
+#include "snprintf.h"
+#endif
+
struct citsmtp { /* Information about the current session */
int command_state;
- char helo_node[256];
- struct usersupp vrfy_buffer;
+ char helo_node[SIZ];
+ struct ctdluser vrfy_buffer;
int vrfy_count;
- char vrfy_match[256];
- char from[256];
+ char vrfy_match[SIZ];
+ char from[SIZ];
+ char recipients[SIZ];
int number_of_recipients;
int delivery_mode;
+ int message_originated_locally;
+ int is_lmtp;
};
enum { /* Command states for login authentication */
};
#define SMTP ((struct citsmtp *)CtdlGetUserData(SYM_SMTP))
-#define SMTP_RECP ((char *)CtdlGetUserData(SYM_SMTP_RECP))
+#define SMTP_RECPS ((char *)CtdlGetUserData(SYM_SMTP_RECPS))
+#define SMTP_ROOMS ((char *)CtdlGetUserData(SYM_SMTP_ROOMS))
-long SYM_SMTP;
-long SYM_SMTP_RECP;
+
+int run_queue_now = 0; /* Set to 1 to ignore SMTP send retry times */
CC->internal_pgm = 1;
CC->cs_flags |= CS_STEALTH;
CtdlAllocUserData(SYM_SMTP, sizeof(struct citsmtp));
- CtdlAllocUserData(SYM_SMTP_RECP, 256);
- sprintf(SMTP_RECP, "%s", "");
+ CtdlAllocUserData(SYM_SMTP_RECPS, SIZ);
+ CtdlAllocUserData(SYM_SMTP_ROOMS, SIZ);
+ snprintf(SMTP_RECPS, SIZ, "%s", "");
+ snprintf(SMTP_ROOMS, SIZ, "%s", "");
- cprintf("220 Welcome to the Citadel/UX ESMTP server at %s\r\n",
- config.c_fqdn);
+ cprintf("220 %s ESMTP Citadel/UX server ready.\r\n", config.c_fqdn);
+}
+
+/*
+ * LMTP is like SMTP but with some extra bonus footage added.
+ */
+void lmtp_greeting(void) {
+ smtp_greeting();
+ SMTP->is_lmtp = 1;
+}
+
+
+/*
+ * Login greeting common to all auth methods
+ */
+void smtp_auth_greeting(void) {
+ cprintf("235 2.0.0 Hello, %s\r\n", CC->user.fullname);
+ lprintf(CTDL_NOTICE, "SMTP authenticated %s\n", CC->user.fullname);
+ CC->internal_pgm = 0;
+ CC->cs_flags &= ~CS_STEALTH;
}
/*
* Implement HELO and EHLO commands.
+ *
+ * which_command: 0=HELO, 1=EHLO, 2=LHLO
*/
-void smtp_hello(char *argbuf, int is_esmtp) {
+void smtp_hello(char *argbuf, int which_command) {
safestrncpy(SMTP->helo_node, argbuf, sizeof SMTP->helo_node);
- if (!is_esmtp) {
- cprintf("250 Greetings and joyous salutations.\r\n");
+ if ( (which_command != 2) && (SMTP->is_lmtp) ) {
+ cprintf("500 Only LHLO is allowed when running LMTP\r\n");
+ return;
+ }
+
+ if ( (which_command == 2) && (SMTP->is_lmtp == 0) ) {
+ cprintf("500 LHLO is only allowed when running LMTP\r\n");
+ return;
+ }
+
+ if (which_command == 0) {
+ cprintf("250 Hello %s (%s [%s])\r\n",
+ SMTP->helo_node,
+ CC->cs_host,
+ CC->cs_addr
+ );
}
else {
- cprintf("250-Greetings and joyous salutations.\r\n");
+ if (which_command == 1) {
+ cprintf("250-Hello %s (%s [%s])\r\n",
+ SMTP->helo_node,
+ CC->cs_host,
+ CC->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 AUTH=LOGIN\r\n");
+ cprintf("250-PIPELINING\r\n");
+ cprintf("250-AUTH LOGIN PLAIN\r\n");
+ cprintf("250-AUTH=LOGIN PLAIN\r\n");
+#ifdef HAVE_OPENSSL
+ cprintf("250-STARTTLS\r\n");
+#endif
+ cprintf("250 ENHANCEDSTATUSCODES\r\n");
}
}
+
/*
* Implement HELP command.
*/
void smtp_help(void) {
- cprintf("214-Here's the frequency, Kenneth:\r\n");
+ cprintf("214-Commands accepted:\r\n");
cprintf("214- DATA\r\n");
cprintf("214- EHLO\r\n");
cprintf("214- EXPN\r\n");
cprintf("214- RCPT\r\n");
cprintf("214- RSET\r\n");
cprintf("214- VRFY\r\n");
- cprintf("214 I could tell you more, but then I'd have to kill you.\r\n");
+ cprintf("214 \r\n");
}
*
*/
void smtp_get_user(char *argbuf) {
- char buf[256];
- char username[256];
+ char buf[SIZ];
+ char username[SIZ];
- decode_base64(username, argbuf);
- lprintf(9, "Trying <%s>\n", username);
+ CtdlDecodeBase64(username, argbuf, SIZ);
+ lprintf(CTDL_DEBUG, "Trying <%s>\n", username);
if (CtdlLoginExistingUser(username) == login_ok) {
- encode_base64(buf, "Password:");
+ CtdlEncodeBase64(buf, "Password:", 9);
cprintf("334 %s\r\n", buf);
SMTP->command_state = smtp_password;
}
else {
- cprintf("500 No such user.\r\n");
+ cprintf("500 5.7.0 No such user.\r\n");
SMTP->command_state = smtp_command;
}
}
*
*/
void smtp_get_pass(char *argbuf) {
- char password[256];
+ char password[SIZ];
- decode_base64(password, argbuf);
- lprintf(9, "Trying <%s>\n", password);
+ CtdlDecodeBase64(password, argbuf, SIZ);
+ lprintf(CTDL_DEBUG, "Trying <%s>\n", password);
if (CtdlTryPassword(password) == pass_ok) {
- cprintf("235 Authentication successful.\r\n");
- lprintf(9, "SMTP authenticated login successful\n");
- CC->internal_pgm = 0;
- CC->cs_flags &= ~CS_STEALTH;
+ smtp_auth_greeting();
}
else {
- cprintf("500 Authentication failed.\r\n");
+ cprintf("535 5.7.0 Authentication failed.\r\n");
}
SMTP->command_state = smtp_command;
}
*
*/
void smtp_auth(char *argbuf) {
- char buf[256];
+ char buf[SIZ];
+ char method[SIZ];
+ char encoded_authstring[SIZ];
+ char decoded_authstring[SIZ];
+ char ident[SIZ];
+ char user[SIZ];
+ char pass[SIZ];
- if (strncasecmp(argbuf, "login", 5) ) {
- cprintf("550 We only support LOGIN authentication.\r\n");
+ if (CC->logged_in) {
+ cprintf("504 5.7.4 Already logged in.\r\n");
return;
}
- if (strlen(argbuf) >= 7) {
- smtp_get_user(&argbuf[6]);
+ extract_token(method, argbuf, 0, ' ');
+
+ if (!strncasecmp(method, "login", 5) ) {
+ if (strlen(argbuf) >= 7) {
+ smtp_get_user(&argbuf[6]);
+ }
+ else {
+ CtdlEncodeBase64(buf, "Username:", 9);
+ cprintf("334 %s\r\n", buf);
+ SMTP->command_state = smtp_user;
+ }
+ return;
}
- else {
- encode_base64(buf, "Username:");
- cprintf("334 %s\r\n", buf);
- SMTP->command_state = smtp_user;
+ if (!strncasecmp(method, "plain", 5) ) {
+ extract_token(encoded_authstring, argbuf, 1, ' ');
+ CtdlDecodeBase64(decoded_authstring,
+ encoded_authstring,
+ strlen(encoded_authstring) );
+ strcpy(ident, decoded_authstring);
+ strcpy(user, &decoded_authstring[strlen(ident) + 1] );
+ strcpy(pass, &decoded_authstring[strlen(ident) + strlen(user) + 2] );
+
+ if (CtdlLoginExistingUser(user) == login_ok) {
+ if (CtdlTryPassword(pass) == pass_ok) {
+ smtp_auth_greeting();
+ return;
+ }
+ }
+ cprintf("504 5.7.4 Authentication failed.\r\n");
+ }
+
+ if (strncasecmp(method, "login", 5) ) {
+ cprintf("504 5.7.4 Unknown authentication method.\r\n");
+ return;
}
+
}
/*
* Back end for smtp_vrfy() command
*/
-void smtp_vrfy_backend(struct usersupp *us, void *data) {
+void smtp_vrfy_backend(struct ctdluser *us, void *data) {
if (!fuzzy_match(us, SMTP->vrfy_match)) {
++SMTP->vrfy_count;
- memcpy(&SMTP->vrfy_buffer, us, sizeof(struct usersupp));
+ memcpy(&SMTP->vrfy_buffer, us, sizeof(struct ctdluser));
}
}
ForEachUser(smtp_vrfy_backend, NULL);
if (SMTP->vrfy_count < 1) {
- cprintf("550 String does not match anything.\r\n");
+ cprintf("550 5.1.1 String does not match anything.\r\n");
}
else if (SMTP->vrfy_count == 1) {
cprintf("250 %s <cit%ld@%s>\r\n",
config.c_fqdn);
}
else if (SMTP->vrfy_count > 1) {
- cprintf("553 Request ambiguous: %d users matched.\r\n",
+ cprintf("553 5.1.4 Request ambiguous: %d users matched.\r\n",
SMTP->vrfy_count);
}
/*
* Back end for smtp_expn() command
*/
-void smtp_expn_backend(struct usersupp *us, void *data) {
+void smtp_expn_backend(struct ctdluser *us, void *data) {
if (!fuzzy_match(us, SMTP->vrfy_match)) {
}
++SMTP->vrfy_count;
- memcpy(&SMTP->vrfy_buffer, us, sizeof(struct usersupp));
+ memcpy(&SMTP->vrfy_buffer, us, sizeof(struct ctdluser));
}
}
ForEachUser(smtp_expn_backend, NULL);
if (SMTP->vrfy_count < 1) {
- cprintf("550 String does not match anything.\r\n");
+ cprintf("550 5.1.1 String does not match anything.\r\n");
}
else if (SMTP->vrfy_count >= 1) {
cprintf("250 %s <cit%ld@%s>\r\n",
* Currently this just zeroes out the state buffer. If pointers to data
* allocated with mallok() are ever placed in the state buffer, we have to
* be sure to phree() them first!
+ *
+ * Set do_response to nonzero to output the SMTP RSET response code.
*/
-void smtp_rset(void) {
+void smtp_rset(int do_response) {
+ int is_lmtp;
+
+ /*
+ * Our entire SMTP state is discarded when a RSET command is issued,
+ * but we need to preserve this one little piece of information, so
+ * we save it for later.
+ */
+ is_lmtp = SMTP->is_lmtp;
+
memset(SMTP, 0, sizeof(struct citsmtp));
- if (CC->logged_in) logout(CC);
- cprintf("250 Zap!\r\n");
+
+ /*
+ * It is somewhat ambiguous whether we want to log out when a RSET
+ * command is issued. Here's the code to do it. It is commented out
+ * because some clients (such as Pine) issue RSET commands before
+ * each message, but still expect to be logged in.
+ *
+ * if (CC->logged_in) {
+ * logout(CC);
+ * }
+ */
+
+ /*
+ * Reinstate this little piece of information we saved (see above).
+ */
+ SMTP->is_lmtp = is_lmtp;
+
+ if (do_response) {
+ cprintf("250 2.0.0 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) {
+ strcpy(SMTP->from, "");
+ strcpy(SMTP->recipients, "");
+ SMTP->number_of_recipients = 0;
+ SMTP->delivery_mode = 0;
+ SMTP->message_originated_locally = 0;
}
* Implements the "MAIL From:" command
*/
void smtp_mail(char *argbuf) {
- char user[256];
- char node[256];
- int cvt;
+ char user[SIZ];
+ char node[SIZ];
+ char name[SIZ];
if (strlen(SMTP->from) != 0) {
- cprintf("503 Only one sender permitted\r\n");
+ cprintf("503 5.1.0 Only one sender permitted\r\n");
return;
}
if (strncasecmp(argbuf, "From:", 5)) {
- cprintf("501 Syntax error\r\n");
+ cprintf("501 5.1.7 Syntax error\r\n");
return;
}
strcpy(SMTP->from, &argbuf[5]);
striplt(SMTP->from);
+ stripallbut(SMTP->from, '<', '>');
+ /* We used to reject empty sender names, until it was brought to our
+ * attention that RFC1123 5.2.9 requires that this be allowed. So now
+ * we allow it, but replace the empty string with a fake
+ * address so we don't have to contend with the empty string causing
+ * other code to fail when it's expecting something there.
+ */
if (strlen(SMTP->from) == 0) {
- cprintf("501 Empty sender name is not permitted\r\n");
- return;
+ strcpy(SMTP->from, "someone@somewhere.org");
}
-
- /* If this SMTP connection is from a logged-in user, make sure that
- * the user only sends email from his/her own address.
+ /* 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) {
- cvt = convert_internet_address(user, node, SMTP->from);
- lprintf(9, "cvt=%d, citaddr=<%s@%s>\n", cvt, user, node);
- if ( (cvt != 0) || (strcasecmp(user, CC->usersupp.fullname))) {
- cprintf("550 <%s> is not your address.\r\n", SMTP->from);
- strcpy(SMTP->from, "");
- return;
- }
+ strcpy(SMTP->from, CC->cs_inet_email);
+ cprintf("250 2.1.0 Sender ok <%s>\r\n", SMTP->from);
+ SMTP->message_originated_locally = 1;
+ return;
+ }
+
+ else if (SMTP->is_lmtp) {
+ /* Bypass forgery checking for LMTP */
}
/* Otherwise, make sure outsiders aren't trying to forge mail from
* this system.
*/
else {
- cvt = convert_internet_address(user, node, SMTP->from);
- lprintf(9, "cvt=%d, citaddr=<%s@%s>\n", cvt, user, node);
- if (CtdlHostAlias(node) == hostalias_localhost) {
- cprintf("550 You must log in to send mail from %s\r\n",
+ process_rfc822_addr(SMTP->from, user, node, name);
+ if (CtdlHostAlias(node) != hostalias_nomatch) {
+ cprintf("550 5.1.8 "
+ "You must log in to send mail from %s\r\n",
node);
strcpy(SMTP->from, "");
return;
}
}
- cprintf("250 Sender ok. Groovy.\r\n");
+ cprintf("250 2.0.0 Sender ok\r\n");
}
* Implements the "RCPT To:" command
*/
void smtp_rcpt(char *argbuf) {
- int cvt;
- char user[256];
- char node[256];
- char recp[256];
- int is_spam = 0; /* FIXME implement anti-spamming */
+ char recp[SIZ];
+ char message_to_spammer[SIZ];
+ struct recptypes *valid = NULL;
if (strlen(SMTP->from) == 0) {
- cprintf("503 MAIL first, then RCPT. Duh.\r\n");
+ cprintf("503 5.5.1 Need MAIL before RCPT\r\n");
return;
}
if (strncasecmp(argbuf, "To:", 3)) {
- cprintf("501 Syntax error\r\n");
+ cprintf("501 5.1.7 Syntax error\r\n");
return;
}
strcpy(recp, &argbuf[3]);
striplt(recp);
- alias(recp);
-
- cvt = convert_internet_address(user, node, recp);
- sprintf(recp, "%s@%s", user, node);
- lprintf(9, "cvt=%d, citaddr=<%s@%s>\n", cvt, user, node);
-
- switch(cvt) {
- case rfc822_address_locally_validated:
- cprintf("250 %s is a valid recipient.\r\n", user);
- ++SMTP->number_of_recipients;
- CtdlReallocUserData(SYM_SMTP_RECP,
- strlen(SMTP_RECP) + 1024 );
- strcat(SMTP_RECP, "local|");
- strcat(SMTP_RECP, user);
- strcat(SMTP_RECP, "|0\n");
- return;
-
- case rfc822_room_delivery:
- cprintf("250 Delivering to room '%s'\r\n", user);
- ++SMTP->number_of_recipients;
- CtdlReallocUserData(SYM_SMTP_RECP,
- strlen(SMTP_RECP) + 1024 );
- strcat(SMTP_RECP, "room|");
- strcat(SMTP_RECP, user);
- strcat(SMTP_RECP, "|0|\n");
- return;
-
- case rfc822_no_such_user:
- cprintf("550 %s: no such user\r\n", recp);
- return;
+ stripallbut(recp, '<', '>');
- case rfc822_address_on_citadel_network:
- cprintf("250 %s is on the local network\r\n", recp);
- ++SMTP->number_of_recipients;
- CtdlReallocUserData(SYM_SMTP_RECP,
- strlen(SMTP_RECP) + 1024 );
- strcat(SMTP_RECP, "ignet|");
- strcat(SMTP_RECP, user);
- strcat(SMTP_RECP, "|");
- strcat(SMTP_RECP, node);
- strcat(SMTP_RECP, "|0|\n");
- return;
-
- case rfc822_address_nonlocal:
- if (is_spam) {
- cprintf("551 Away with thee, spammer!\r\n");
- }
- else {
- cprintf("250 Remote recipient %s ok\r\n", recp);
- ++SMTP->number_of_recipients;
- CtdlReallocUserData(SYM_SMTP_RECP,
- strlen(SMTP_RECP) + 1024 );
- strcat(SMTP_RECP, "remote|");
- strcat(SMTP_RECP, recp);
- strcat(SMTP_RECP, "|0|\n");
- return;
- }
- return;
+ if ( (strlen(recp) + strlen(SMTP->recipients) + 1 ) >= SIZ) {
+ cprintf("452 4.5.3 Too many recipients\r\n");
+ return;
}
- cprintf("599 Unknown error\r\n");
-}
-
-
-
-/*
- * Send a message out through the local network
- * (This is kind of ugly. IGnet should be done using clean server-to-server
- * code instead of the old style spool.)
- */
-void smtp_deliver_ignet(struct CtdlMessage *msg, char *user, char *dest) {
- struct ser_ret smr;
- char *hold_R, *hold_D;
- FILE *fp;
- char filename[256];
- static int seq = 0;
-
- lprintf(9, "smtp_deliver_ignet(msg, %s, %s)\n", user, dest);
-
- hold_R = msg->cm_fields['R'];
- hold_D = msg->cm_fields['D'];
- msg->cm_fields['R'] = user;
- msg->cm_fields['D'] = dest;
-
- serialize_message(&smr, msg);
-
- msg->cm_fields['R'] = hold_R;
- msg->cm_fields['D'] = hold_D;
-
- if (smr.len != 0) {
- sprintf(filename, "./network/spoolin/%s.%04x.%04x",
- dest, getpid(), ++seq);
- lprintf(9, "spool file name is <%s>\n", filename);
- fp = fopen(filename, "wb");
- if (fp != NULL) {
- fwrite(smr.ser, smr.len, 1, fp);
- fclose(fp);
+ /* RBL check */
+ if ( (!CC->logged_in)
+ && (!SMTP->is_lmtp) ) {
+ if (rbl_check(message_to_spammer)) {
+ cprintf("550 %s\r\n", message_to_spammer);
+ /* no need to phree(valid), it's not allocated yet */
+ return;
}
- phree(smr.ser);
}
-}
-
-
-
-/*
- * Back end for smtp_data() ... this does the actual delivery of the message
- * Returns 0 on success, nonzero on failure
- */
-int smtp_message_delivery(struct CtdlMessage *msg) {
- char user[1024];
- char node[1024];
- char name[1024];
- char buf[1024];
- char dtype[1024];
- char room[1024];
- int successful_saves = 0; /* number of successful local saves */
- int failed_saves = 0; /* number of failed deliveries */
- int remote_spools = 0; /* number of copies to send out */
- long msgid = (-1L);
- int i;
- struct usersupp userbuf;
- char *instr; /* Remote delivery instructions */
- struct CtdlMessage *imsg;
-
- lprintf(9, "smtp_message_delivery() called\n");
-
- /* Fill in 'from' fields with envelope information if missing */
- process_rfc822_addr(SMTP->from, user, node, name);
- if (msg->cm_fields['A']==NULL) msg->cm_fields['A'] = strdoop(user);
- if (msg->cm_fields['N']==NULL) msg->cm_fields['N'] = strdoop(node);
- if (msg->cm_fields['H']==NULL) msg->cm_fields['H'] = strdoop(name);
-
- /* Save the message in the queue */
- msgid = CtdlSaveMsg(msg,
- "",
- SMTP_SPOOLOUT_ROOM,
- MES_LOCAL,
- 1);
- ++successful_saves;
-
- instr = mallok(1024);
- sprintf(instr, "Content-type: %s\n\nmsgid|%ld\nsubmitted|%ld\n"
- "bounceto|%s\n",
- SPOOLMIME, msgid, time(NULL),
- SMTP->from );
-
- for (i=0; i<SMTP->number_of_recipients; ++i) {
- extract_token(buf, SMTP_RECP, i, '\n');
- extract(dtype, buf, 0);
-
- /* Stuff local mailboxes */
- if (!strcasecmp(dtype, "local")) {
- extract(user, buf, 1);
- if (getuser(&userbuf, user) == 0) {
- MailboxName(room, &userbuf, MAILROOM);
- CtdlSaveMsgPointerInRoom(room, msgid, 0);
- ++successful_saves;
- }
- else {
- ++failed_saves;
- }
- }
-
- /* Delivery to local non-mailbox rooms */
- if (!strcasecmp(dtype, "room")) {
- extract(room, buf, 1);
- CtdlSaveMsgPointerInRoom(room, msgid, 0);
- ++successful_saves;
- }
-
- /* Delivery over the local Citadel network (IGnet) */
- if (!strcasecmp(dtype, "ignet")) {
- extract(user, buf, 1);
- extract(node, buf, 2);
- smtp_deliver_ignet(msg, user, node);
- }
-
- /* Remote delivery */
- if (!strcasecmp(dtype, "remote")) {
- extract(user, buf, 1);
- instr = reallok(instr, strlen(instr) + 1024);
- sprintf(&instr[strlen(instr)],
- "remote|%s|0\n",
- user);
- ++remote_spools;
- }
-
+ valid = validate_recipients(recp);
+ if (valid->num_error > 0) {
+ cprintf("599 5.1.1 Error: %s\r\n", valid->errormsg);
+ phree(valid);
+ return;
}
- /* If there are remote spools to be done, save the instructions */
- if (remote_spools > 0) {
- imsg = mallok(sizeof(struct CtdlMessage));
- memset(imsg, 0, sizeof(struct CtdlMessage));
- imsg->cm_magic = CTDLMESSAGE_MAGIC;
- imsg->cm_anon_type = MES_NORMAL;
- imsg->cm_format_type = FMT_RFC822;
- imsg->cm_fields['M'] = instr;
- CtdlSaveMsg(imsg, "", SMTP_SPOOLOUT_ROOM, MES_LOCAL, 1);
- CtdlFreeMessage(imsg);
+ if (valid->num_internet > 0) {
+ if ( (SMTP->message_originated_locally == 0)
+ && (SMTP->is_lmtp == 0) ) {
+ cprintf("551 5.7.1 <%s> - relaying denied\r\n", recp);
+ phree(valid);
+ return;
+ }
}
- /* If there are no remote spools, delete the message */
- else {
- phree(instr); /* only needed here, because CtdlSaveMsg()
- * would free this buffer otherwise */
- CtdlDeleteMessages(SMTP_SPOOLOUT_ROOM, msgid, NULL);
+ cprintf("250 2.1.5 RCPT ok <%s>\r\n", recp);
+ if (strlen(SMTP->recipients) > 0) {
+ strcat(SMTP->recipients, ",");
}
-
- return(failed_saves);
+ strcat(SMTP->recipients, recp);
+ SMTP->number_of_recipients += 1;
}
+
/*
* Implements the DATA command
*/
void smtp_data(void) {
char *body;
struct CtdlMessage *msg;
- int retval;
- char nowstamp[256];
+ long msgnum;
+ char nowstamp[SIZ];
+ struct recptypes *valid;
+ int scan_errors;
+ int i;
+ char result[SIZ];
if (strlen(SMTP->from) == 0) {
- cprintf("503 Need MAIL command first.\r\n");
+ cprintf("503 5.5.1 Need MAIL command first.\r\n");
return;
}
if (SMTP->number_of_recipients < 1) {
- cprintf("503 Need RCPT command first.\r\n");
+ cprintf("503 5.5.1 Need RCPT command first.\r\n");
return;
}
- cprintf("354 Transmit message now; terminate with '.' by itself\r\n");
+ cprintf("354 Transmit message now - terminate with '.' by itself\r\n");
- generate_rfc822_datestamp(nowstamp, time(NULL));
+ datestring(nowstamp, sizeof nowstamp, time(NULL), DATESTRING_RFC822);
body = mallok(4096);
- if (body != NULL) sprintf(body,
- "Received: from %s\n"
- " by %s;\n"
- " %s\n",
+ if (body != NULL) snprintf(body, 4096,
+ "Received: from %s (%s [%s])\n"
+ " by %s; %s\n",
SMTP->helo_node,
+ CC->cs_host,
+ CC->cs_addr,
config.c_fqdn,
nowstamp);
- body = CtdlReadMessageBody(".", config.c_maxmsglen, body);
+ body = CtdlReadMessageBody(".", config.c_maxmsglen, body, 1);
if (body == NULL) {
- cprintf("550 Unable to save message text: internal error.\r\n");
+ cprintf("550 5.6.5 "
+ "Unable to save message: internal error.\r\n");
return;
}
- lprintf(9, "Converting message...\n");
+ lprintf(CTDL_DEBUG, "Converting message...\n");
msg = convert_internet_message(body);
/* If the user is locally authenticated, FORCE the From: header to
- * show up as the real sender
+ * show up as the real sender. Yes, this violates the RFC standard,
+ * but IT MAKES SENSE. If you prefer strict RFC adherence over
+ * common sense, you can disable this in the configuration.
+ *
+ * We also set the "message room name" ('O' field) to MAILROOM
+ * (which is Mail> on most systems) to prevent it from getting set
+ * to something ugly like "0000058008.Sent Items>" when the message
+ * is read with a Citadel client.
*/
- if (CC->logged_in) {
+ if ( (CC->logged_in) && (config.c_rfc822_strict_from == 0) ) {
if (msg->cm_fields['A'] != NULL) phree(msg->cm_fields['A']);
if (msg->cm_fields['N'] != NULL) phree(msg->cm_fields['N']);
if (msg->cm_fields['H'] != NULL) phree(msg->cm_fields['H']);
- msg->cm_fields['A'] = strdoop(CC->usersupp.fullname);
+ if (msg->cm_fields['F'] != NULL) phree(msg->cm_fields['F']);
+ if (msg->cm_fields['O'] != NULL) phree(msg->cm_fields['O']);
+ msg->cm_fields['A'] = strdoop(CC->user.fullname);
msg->cm_fields['N'] = strdoop(config.c_nodename);
msg->cm_fields['H'] = strdoop(config.c_humannode);
+ msg->cm_fields['F'] = strdoop(CC->cs_inet_email);
+ msg->cm_fields['O'] = strdoop(MAILROOM);
}
- retval = smtp_message_delivery(msg);
- CtdlFreeMessage(msg);
+ /* Submit the message into the Citadel system. */
+ valid = validate_recipients(SMTP->recipients);
+
+ /* If there are modules that want to scan this message before final
+ * submission (such as virus checkers or spam filters), call them now
+ * and give them an opportunity to reject the message.
+ */
+ scan_errors = PerformMessageHooks(msg, EVT_SMTPSCAN);
+
+ if (scan_errors > 0) { /* We don't want this message! */
- if (!retval) {
- cprintf("250 Message accepted for delivery.\r\n");
+ if (msg->cm_fields['0'] == NULL) {
+ msg->cm_fields['0'] = strdoop(
+ "5.7.1 Message rejected by filter");
+ }
+
+ sprintf(result, "550 %s\r\n", msg->cm_fields['0']);
+ }
+
+ else { /* Ok, we'll accept this message. */
+ msgnum = CtdlSubmitMsg(msg, valid, "");
+ if (msgnum > 0L) {
+ sprintf(result, "250 2.0.0 Message accepted.\r\n");
+ }
+ else {
+ sprintf(result, "550 5.5.0 Internal delivery error\r\n");
+ }
+ }
+
+ /* For SMTP and ESTMP, 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
+ * same message once for each recipient.
+ */
+ if (SMTP->is_lmtp) {
+ for (i=0; i<SMTP->number_of_recipients; ++i) {
+ cprintf("%s", result);
+ }
}
else {
- cprintf("550 Internal delivery errors: %d\r\n", retval);
+ cprintf("%s", result);
}
+
+ CtdlFreeMessage(msg);
+ phree(valid);
+ smtp_data_clear(); /* clear out the buffers now */
}
+/*
+ * implements the STARTTLS command (Citadel API version)
+ */
+#ifdef HAVE_OPENSSL
+void smtp_starttls(void)
+{
+ char ok_response[SIZ];
+ char nosup_response[SIZ];
+ char error_response[SIZ];
+
+ sprintf(ok_response,
+ "200 2.0.0 Begin TLS negotiation now\r\n");
+ sprintf(nosup_response,
+ "554 5.7.3 TLS not supported here\r\n");
+ sprintf(error_response,
+ "554 5.7.3 Internal error\r\n");
+ CtdlStartTLS(ok_response, nosup_response, error_response);
+ smtp_rset(0);
+}
+#endif
+
/*
* Main command loop for SMTP sessions.
*/
void smtp_command_loop(void) {
- char cmdbuf[256];
+ char cmdbuf[SIZ];
time(&CC->lastcmd);
memset(cmdbuf, 0, sizeof cmdbuf); /* Clear it, just in case */
if (client_gets(cmdbuf) < 1) {
- lprintf(3, "SMTP socket is broken. Ending session.\n");
+ lprintf(CTDL_CRIT, "SMTP socket is broken. Ending session.\n");
CC->kill_me = 1;
return;
}
- lprintf(5, "citserver[%3d]: %s\n", CC->cs_pid, cmdbuf);
+ lprintf(CTDL_INFO, "SMTP: %s\n", cmdbuf);
while (strlen(cmdbuf) < 5) strcat(cmdbuf, " ");
if (SMTP->command_state == smtp_user) {
smtp_data();
}
- else if (!strncasecmp(cmdbuf, "EHLO", 4)) {
- smtp_hello(&cmdbuf[5], 1);
- }
-
else if (!strncasecmp(cmdbuf, "EXPN", 4)) {
smtp_expn(&cmdbuf[5]);
}
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, "NOOP", 4)) {
- cprintf("250 This command successfully did nothing.\r\n");
+ 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();
+ smtp_rset(1);
}
-
+#ifdef HAVE_OPENSSL
+ else if (!strcasecmp(cmdbuf, "STARTTLS")) {
+ smtp_starttls();
+ }
+#endif
else if (!strncasecmp(cmdbuf, "VRFY", 4)) {
smtp_vrfy(&cmdbuf[5]);
}
else {
- cprintf("502 I'm sorry Dave, I'm afraid I can't do that.\r\n");
+ cprintf("502 5.0.0 I'm afraid I can't do that.\r\n");
}
}
* Called by smtp_do_procmsg() to attempt delivery to one SMTP host
*
*/
-void smtp_try(char *key, char *addr, int *status, char *dsn, long msgnum)
+void smtp_try(const char *key, const char *addr, int *status,
+ char *dsn, size_t n, long msgnum)
{
int sock = (-1);
char mxhosts[1024];
int num_mxhosts;
int mx;
int i;
- char user[256], node[256], name[256];
+ char user[SIZ], node[SIZ], name[SIZ];
char buf[1024];
char mailfrom[1024];
int lp, rp;
/* Parse out the host portion of the recipient address */
process_rfc822_addr(addr, user, node, name);
- lprintf(9, "Attempting SMTP delivery to <%s> @ <%s> (%s)\n",
+ lprintf(CTDL_DEBUG, "Attempting SMTP delivery to <%s> @ <%s> (%s)\n",
user, node, name);
/* Load the message out of the database into a temp file */
msg_fp = tmpfile();
if (msg_fp == NULL) {
*status = 4;
- sprintf(dsn, "Error creating temporary file");
+ snprintf(dsn, n, "Error creating temporary file");
return;
}
else {
CtdlRedirectOutput(msg_fp, -1);
- CtdlOutputMsg(msgnum, MT_RFC822, 0, 0, 1);
+ CtdlOutputMsg(msgnum, MT_RFC822, HEADERS_ALL, 0, 1);
CtdlRedirectOutput(NULL, -1);
fseek(msg_fp, 0L, SEEK_END);
msg_size = ftell(msg_fp);
if (mailfrom[i] == '<') lp = i;
if (mailfrom[i] == '>') rp = i;
}
- if ((lp>=0)&&(rp>lp)) {
+ if ( (lp>=0) && (rp>lp) ) {
mailfrom[rp] = 0;
strcpy(mailfrom, &mailfrom[lp]);
}
} while (scan_done == 0);
if (strlen(mailfrom)==0) strcpy(mailfrom, "someone@somewhere.org");
-
/* Figure out what mail exchanger host we have to connect to */
num_mxhosts = getmx(mxhosts, node);
- lprintf(9, "Number of MX hosts for <%s> is %d\n", node, num_mxhosts);
+ lprintf(CTDL_DEBUG, "Number of MX hosts for <%s> is %d\n", node, num_mxhosts);
if (num_mxhosts < 1) {
*status = 5;
- sprintf(dsn, "No MX hosts found for <%s>", node);
+ snprintf(dsn, SIZ, "No MX hosts found for <%s>", node);
return;
}
- for (mx=0; mx<num_mxhosts; ++mx) {
+ sock = (-1);
+ for (mx=0; (mx<num_mxhosts && sock < 0); ++mx) {
extract(buf, mxhosts, mx);
- lprintf(9, "Trying <%s>\n", buf);
+ lprintf(CTDL_DEBUG, "Trying <%s>\n", buf);
sock = sock_connect(buf, "25", "tcp");
- sprintf(dsn, "Could not connect: %s", strerror(errno));
- if (sock >= 0) lprintf(9, "Connected!\n");
- if (sock < 0) sprintf(dsn, "%s", strerror(errno));
- if (sock >= 0) break;
+ snprintf(dsn, SIZ, "Could not connect: %s", strerror(errno));
+ if (sock >= 0) lprintf(CTDL_DEBUG, "Connected!\n");
+ if (sock < 0) snprintf(dsn, SIZ, "%s", strerror(errno));
}
if (sock < 0) {
}
/* Process the SMTP greeting from the server */
- if (sock_gets(sock, buf) < 0) {
+ if (ml_sock_gets(sock, buf) < 0) {
*status = 4;
strcpy(dsn, "Connection broken during SMTP conversation");
goto bail;
}
- lprintf(9, "<%s\n", buf);
+ lprintf(CTDL_DEBUG, "<%s\n", buf);
if (buf[0] != '2') {
if (buf[0] == '4') {
*status = 4;
/* At this point we know we are talking to a real SMTP server */
/* Do a HELO command */
- sprintf(buf, "HELO %s", config.c_fqdn);
- lprintf(9, ">%s\n", buf);
- sock_puts(sock, buf);
- if (sock_gets(sock, buf) < 0) {
+ snprintf(buf, sizeof buf, "HELO %s\r\n", config.c_fqdn);
+ lprintf(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 conversation");
+ strcpy(dsn, "Connection broken during SMTP HELO");
goto bail;
}
- lprintf(9, "<%s\n", buf);
+ lprintf(CTDL_DEBUG, "<%s\n", buf);
if (buf[0] != '2') {
if (buf[0] == '4') {
*status = 4;
/* HELO succeeded, now try the MAIL From: command */
- sprintf(buf, "MAIL From: %s", mailfrom);
- lprintf(9, ">%s\n", buf);
- sock_puts(sock, buf);
- if (sock_gets(sock, buf) < 0) {
+ snprintf(buf, sizeof buf, "MAIL From: <%s>\r\n", mailfrom);
+ lprintf(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 conversation");
+ strcpy(dsn, "Connection broken during SMTP MAIL");
goto bail;
}
- lprintf(9, "<%s\n", buf);
+ lprintf(CTDL_DEBUG, "<%s\n", buf);
if (buf[0] != '2') {
if (buf[0] == '4') {
*status = 4;
/* MAIL succeeded, now try the RCPT To: command */
- sprintf(buf, "RCPT To: %s", addr);
- lprintf(9, ">%s\n", buf);
- sock_puts(sock, buf);
- if (sock_gets(sock, buf) < 0) {
+ snprintf(buf, sizeof buf, "RCPT To: <%s>\r\n", addr);
+ lprintf(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 conversation");
+ strcpy(dsn, "Connection broken during SMTP RCPT");
goto bail;
}
- lprintf(9, "<%s\n", buf);
+ lprintf(CTDL_DEBUG, "<%s\n", buf);
if (buf[0] != '2') {
if (buf[0] == '4') {
*status = 4;
/* RCPT succeeded, now try the DATA command */
- lprintf(9, ">DATA\n");
- sock_puts(sock, "DATA");
- if (sock_gets(sock, buf) < 0) {
+ lprintf(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 conversation");
+ strcpy(dsn, "Connection broken during SMTP DATA");
goto bail;
}
- lprintf(9, "<%s\n", buf);
+ lprintf(CTDL_DEBUG, "<%s\n", buf);
if (buf[0] != '3') {
if (buf[0] == '4') {
*status = 3;
msg_size -= blocksize;
}
if (buf[blocksize-1] != 10) {
- lprintf(5, "Possible problem: message did not correctly "
- "terminate. (expecting 0x10, got 0x%02x)\n",
+ lprintf(CTDL_WARNING, "Possible problem: message did not "
+ "correctly terminate. (expecting 0x10, got 0x%02x)\n",
buf[blocksize-1]);
}
sock_write(sock, ".\r\n", 3);
- if (sock_gets(sock, buf) < 0) {
+ if (ml_sock_gets(sock, buf) < 0) {
*status = 4;
- strcpy(dsn, "Connection broken during SMTP conversation");
+ strcpy(dsn, "Connection broken during SMTP message transmit");
goto bail;
}
- lprintf(9, "%s\n", buf);
+ lprintf(CTDL_DEBUG, "%s\n", buf);
if (buf[0] != '2') {
if (buf[0] == '4') {
*status = 4;
safestrncpy(dsn, &buf[4], 1023);
*status = 2;
- lprintf(9, ">QUIT\n");
- sock_puts(sock, "QUIT");
- sock_gets(sock, buf);
- lprintf(9, "<%s\n", buf);
+ lprintf(CTDL_DEBUG, ">QUIT\n");
+ sock_write(sock, "QUIT\r\n", 6);
+ ml_sock_gets(sock, buf);
+ lprintf(CTDL_DEBUG, "<%s\n", buf);
+ lprintf(CTDL_INFO, "SMTP delivery to <%s> @ <%s> (%s) succeeded\n",
+ user, node, name);
bail: if (msg_fp != NULL) fclose(msg_fp);
sock_close(sock);
time_t submitted = 0L;
struct CtdlMessage *bmsg = NULL;
int give_up = 0;
- int mes_type = 0;
+ struct recptypes *valid;
+ int successful_bounce = 0;
- lprintf(9, "smtp_do_bounce() called\n");
+ lprintf(CTDL_DEBUG, "smtp_do_bounce() called\n");
strcpy(bounceto, "");
lines = num_tokens(instr, '\n');
bmsg->cm_fields['N'] = strdoop(config.c_nodename);
if (give_up) bmsg->cm_fields['M'] = strdoop(
-"A message you sent could not be delivered to some or all of its recipients.\n"
-"The following addresses were undeliverable:\n\n"
-);
-
- else bmsg->cm_fields['M'] = strdoop(
"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"
+);
+
+ else bmsg->cm_fields['M'] = strdoop(
+"A message you sent could not be delivered to some or all of its recipients.\n"
+"The following addresses were undeliverable:\n\n"
);
/*
* Now go through the instructions checking for stuff.
*/
-
for (i=0; i<lines; ++i) {
extract_token(buf, instr, i, '\n');
extract(key, buf, 0);
extract(dsn, buf, 3);
bounce_this = 0;
- lprintf(9, "key=<%s> addr=<%s> status=%d dsn=<%s>\n",
+ lprintf(CTDL_DEBUG, "key=<%s> addr=<%s> status=%d dsn=<%s>\n",
key, addr, status, dsn);
if (!strcasecmp(key, "bounceto")) {
++num_bounces;
if (bmsg->cm_fields['M'] == NULL) {
- lprintf(2, "ERROR ... M field is null "
+ lprintf(CTDL_ERR, "ERROR ... M field is null "
"(%s:%d)\n", __FILE__, __LINE__);
}
}
/* Deliver the bounce if there's anything worth mentioning */
- lprintf(9, "num_bounces = %d\n", num_bounces);
+ lprintf(CTDL_DEBUG, "num_bounces = %d\n", num_bounces);
if (num_bounces > 0) {
/* First try the user who sent the message */
- lprintf(9, "bounce to user? <%s>\n", bounceto);
+ lprintf(CTDL_DEBUG, "bounce to user? <%s>\n", bounceto);
if (strlen(bounceto) == 0) {
- lprintf(7, "No bounce address specified\n");
+ lprintf(CTDL_ERR, "No bounce address specified\n");
bounce_msgid = (-1L);
}
- else if (mes_type = alias(bounceto), mes_type == MES_ERROR) {
- lprintf(7, "Invalid bounce address <%s>\n", bounceto);
- bounce_msgid = (-1L);
+
+ /* Can we deliver the bounce to the original sender? */
+ valid = validate_recipients(bounceto);
+ if (valid != NULL) {
+ if (valid->num_error == 0) {
+ CtdlSubmitMsg(bmsg, valid, "");
+ successful_bounce = 1;
+ }
}
- else {
- bounce_msgid = CtdlSaveMsg(bmsg,
- bounceto,
- "", mes_type, 1);
+
+ /* If not, post it in the Aide> room */
+ if (successful_bounce == 0) {
+ CtdlSubmitMsg(bmsg, NULL, config.c_aideroom);
}
- /* Otherwise, go to the Aide> room */
- lprintf(9, "bounce to room?\n");
- if (bounce_msgid < 0L) bounce_msgid = CtdlSaveMsg(bmsg,
- "", AIDEROOM,
- MES_LOCAL, 1);
+ /* Free up the memory we used */
+ if (valid != NULL) {
+ phree(valid);
+ }
}
CtdlFreeMessage(bmsg);
- lprintf(9, "Done processing bounces\n");
+ lprintf(CTDL_DEBUG, "Done processing bounces\n");
}
*
* Called by smtp_do_queue() to handle an individual message.
*/
-void smtp_do_procmsg(long msgnum) {
+void smtp_do_procmsg(long msgnum, void *userdata) {
struct CtdlMessage *msg;
char *instr = NULL;
char *results = NULL;
int incomplete_deliveries_remaining;
time_t attempted = 0L;
time_t last_attempted = 0L;
+ time_t retry = SMTP_RETRY_INTERVAL;
+
+ lprintf(CTDL_DEBUG, "smtp_do_procmsg(%ld)\n", msgnum);
msg = CtdlFetchMessage(msgnum);
if (msg == NULL) {
- lprintf(3, "SMTP: tried %ld but no such message!\n", msgnum);
+ lprintf(CTDL_ERR, "SMTP: tried %ld but no such message!\n", msgnum);
return;
}
for (i=0; i<lines; ++i) {
extract_token(buf, instr, i, '\n');
if (num_tokens(buf, '|') < 2) {
- lprintf(9, "removing <%s>\n", buf);
remove_token(instr, i, '\n');
--lines;
--i;
if (!strcasecmp(key, "msgid")) {
text_msgid = extract_long(buf, 1);
}
+ 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)
}
}
-
/*
* Postpone delivery if we've already tried recently.
*/
- if ( (time(NULL) - last_attempted) < SMTP_RETRY_INTERVAL) {
- lprintf(7, "Retry time not yet reached.\n");
+ if (((time(NULL) - last_attempted) < retry) && (run_queue_now == 0)) {
+ lprintf(CTDL_DEBUG, "Retry time not yet reached.\n");
phree(instr);
return;
}
* Bail out if there's no actual message associated with this
*/
if (text_msgid < 0L) {
- lprintf(3, "SMTP: no 'msgid' directive found!\n");
+ lprintf(CTDL_ERR, "SMTP: no 'msgid' directive found!\n");
phree(instr);
return;
}
/* Plow through the instructions looking for 'remote' directives and
- * a status of 0 (no delivery yet attempted) or 3 (transient errors
+ * 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');
status = extract_int(buf, 2);
extract(dsn, buf, 3);
if ( (!strcasecmp(key, "remote"))
- && ((status==0)||(status==3)) ) {
+ && ((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;
- lprintf(9, "SMTP: Trying <%s>\n", addr);
- smtp_try(key, addr, &status, dsn, text_msgid);
+ lprintf(CTDL_DEBUG, "SMTP: Trying <%s>\n", addr);
+ smtp_try(key, addr, &status, dsn, sizeof dsn, text_msgid);
if (status != 2) {
if (results == NULL) {
results = mallok(1024);
results = reallok(results,
strlen(results) + 1024);
}
- sprintf(&results[strlen(results)],
+ snprintf(&results[strlen(results)], 1024,
"%s|%s|%d|%s\n",
key, addr, status, dsn);
}
* No delivery instructions remain, so delete both the instructions
* message and the message message.
*/
- if (incomplete_deliveries_remaining <= 0) {
- CtdlDeleteMessages(SMTP_SPOOLOUT_ROOM, msgnum, NULL);
- CtdlDeleteMessages(SMTP_SPOOLOUT_ROOM, text_msgid, NULL);
+ if (incomplete_deliveries_remaining <= 0) {
+ CtdlDeleteMessages(SMTP_SPOOLOUT_ROOM, msgnum, "");
+ CtdlDeleteMessages(SMTP_SPOOLOUT_ROOM, text_msgid, "");
}
* instructions and replace with the updated ones.
*/
if (incomplete_deliveries_remaining > 0) {
- CtdlDeleteMessages(SMTP_SPOOLOUT_ROOM, msgnum, NULL);
+ CtdlDeleteMessages(SMTP_SPOOLOUT_ROOM, msgnum, "");
msg = mallok(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)+256);
- sprintf(msg->cm_fields['M'],
- "Content-type: %s\n\n%s\nattempted|%ld\n",
- SPOOLMIME, instr, time(NULL) );
+ 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 );
phree(instr);
- CtdlSaveMsg(msg, "", SMTP_SPOOLOUT_ROOM, MES_LOCAL, 1);
+ CtdlSubmitMsg(msg, NULL, SMTP_SPOOLOUT_ROOM);
CtdlFreeMessage(msg);
}
/*
* Go ahead and run the queue
*/
- lprintf(5, "SMTP: processing outbound queue\n");
+ lprintf(CTDL_INFO, "SMTP: processing outbound queue\n");
- if (getroom(&CC->quickroom, SMTP_SPOOLOUT_ROOM) != 0) {
- lprintf(3, "Cannot find room <%s>\n", SMTP_SPOOLOUT_ROOM);
+ if (getroom(&CC->room, SMTP_SPOOLOUT_ROOM) != 0) {
+ lprintf(CTDL_ERR, "Cannot find room <%s>\n", SMTP_SPOOLOUT_ROOM);
return;
}
- CtdlForEachMessage(MSGS_ALL, 0L, SPOOLMIME, NULL, smtp_do_procmsg);
+ CtdlForEachMessage(MSGS_ALL, 0L,
+ SPOOLMIME, NULL, smtp_do_procmsg, NULL);
- lprintf(5, "SMTP: queue run completed\n");
+ lprintf(CTDL_INFO, "SMTP: queue run completed\n");
+ run_queue_now = 0;
doing_queue = 0;
}
+/*****************************************************************************/
+/* SMTP UTILITY COMMANDS */
+/*****************************************************************************/
+
+void cmd_smtp(char *argbuf) {
+ char cmd[SIZ];
+ char node[SIZ];
+ char buf[SIZ];
+ int i;
+ int num_mxhosts;
+
+ if (CtdlAccessCheck(ac_aide)) return;
+
+ extract(cmd, argbuf, 0);
+
+ if (!strcasecmp(cmd, "mx")) {
+ extract(node, argbuf, 1);
+ 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(node, buf, i);
+ 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);
+ }
+
+}
+
+
+/*
+ * 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.
+ */
+ create_room(SMTP_SPOOLOUT_ROOM, 3, "", 0, 1, 0);
+
+ /*
+ * 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 (lgetroom(&qrbuf, SMTP_SPOOLOUT_ROOM) == 0) {
+ qrbuf.QRflags2 |= QR2_SYSTEM;
+ lputroom(&qrbuf);
+ }
+}
+
+
+
+
/*****************************************************************************/
/* MODULE INITIALIZATION STUFF */
/*****************************************************************************/
-char *Dynamic_Module_Init(void)
+char *serv_smtp_init(void)
{
- SYM_SMTP = CtdlGetDynamicSymbol();
- SYM_SMTP_RECP = CtdlGetDynamicSymbol();
- CtdlRegisterServiceHook(SMTP_PORT,
+ CtdlRegisterServiceHook(config.c_smtp_port, /* On the net... */
+ NULL,
smtp_greeting,
smtp_command_loop);
- create_room(SMTP_SPOOLOUT_ROOM, 3, "", 0);
+
+ CtdlRegisterServiceHook(0, /* ...and locally */
+ "lmtp.socket",
+ lmtp_greeting,
+ smtp_command_loop);
+
+ smtp_init_spoolout();
CtdlRegisterSessionHook(smtp_do_queue, EVT_TIMER);
+ CtdlRegisterProtoHook(cmd_smtp, "SMTP", "SMTP utility commands");
return "$Id$";
}