]> code.citadel.org Git - citadel.git/blobdiff - citadel/serv_smtp.c
* Renamed "dynloader" to "serv_extensions" globally. We don't want people
[citadel.git] / citadel / serv_smtp.c
index dad23b4c63b4230b3ab7e8e6780ecf16265c9a4a..c0147df1155c2096ef9ce95f1cbb09323bfd1ca1 100644 (file)
@@ -38,7 +38,7 @@
 #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"
@@ -110,8 +110,8 @@ void smtp_greeting(void) {
        CtdlAllocUserData(SYM_SMTP, sizeof(struct citsmtp));
        CtdlAllocUserData(SYM_SMTP_RECPS, SIZ);
        CtdlAllocUserData(SYM_SMTP_ROOMS, SIZ);
-       sprintf(SMTP_RECPS, "%s", "");
-       sprintf(SMTP_ROOMS, "%s", "");
+       snprintf(SMTP_RECPS, SIZ, "%s", "");
+       snprintf(SMTP_ROOMS, SIZ, "%s", "");
 
        cprintf("220 %s ESMTP Citadel/UX server ready.\r\n", config.c_fqdn);
 }
@@ -164,10 +164,10 @@ void smtp_get_user(char *argbuf) {
        char buf[SIZ];
        char username[SIZ];
 
-       decode_base64(username, argbuf, SIZ);
+       CtdlDecodeBase64(username, argbuf, SIZ);
        lprintf(9, "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;
        }
@@ -184,7 +184,7 @@ void smtp_get_user(char *argbuf) {
 void smtp_get_pass(char *argbuf) {
        char password[SIZ];
 
-       decode_base64(password, argbuf, SIZ);
+       CtdlDecodeBase64(password, argbuf, SIZ);
        lprintf(9, "Trying <%s>\n", password);
        if (CtdlTryPassword(password) == pass_ok) {
                cprintf("235 Hello, %s\r\n", CC->usersupp.fullname);
@@ -215,7 +215,7 @@ void smtp_auth(char *argbuf) {
        }
 
        else {
-               encode_base64(buf, "Username:");
+               CtdlEncodeBase64(buf, "Username:", 9);
                cprintf("334 %s\r\n", buf);
                SMTP->command_state = smtp_user;
        }
@@ -336,7 +336,8 @@ void smtp_data_clear(void) {
 void smtp_mail(char *argbuf) {
        char user[SIZ];
        char node[SIZ];
-       int cvt;
+       char name[SIZ];
+       struct recptypes *valid;
 
        if (strlen(SMTP->from) != 0) {
                cprintf("503 Only one sender permitted\r\n");
@@ -350,37 +351,39 @@ void smtp_mail(char *argbuf) {
 
        strcpy(SMTP->from, &argbuf[5]);
        striplt(SMTP->from);
+       stripallbut(SMTP->from, '<', '>');
 
        if (strlen(SMTP->from) == 0) {
                cprintf("501 Empty sender name is not permitted\r\n");
                return;
        }
 
-
        /* If this SMTP connection is from a logged-in user, make sure that
         * the user only sends email from his/her own address.
         */
        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))) {
+               valid = validate_recipients(SMTP->from);
+               if ( (valid->num_local == 1) &&
+                  (!strcasecmp(valid->recp_local, CC->usersupp.fullname)) ) {
+                       cprintf("250 Sender ok <%s>\r\n", valid->recp_local);
+                       SMTP->message_originated_locally = 1;
+               }
+               else {
                        cprintf("550 <%s> is not your address.\r\n",
                                SMTP->from);
                        strcpy(SMTP->from, "");
-                       return;
-               }
-               else {
-                       SMTP->message_originated_locally = 1;
                }
+               phree(valid);
+               return;
        }
 
+
        /* 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) {
+               process_rfc822_addr(SMTP->from, user, node, name);
+               if (CtdlHostAlias(node) != hostalias_nomatch) {
                        cprintf("550 You must log in to send mail from %s\r\n",
                                node);
                        strcpy(SMTP->from, "");
@@ -454,6 +457,7 @@ void smtp_data(void) {
        long msgnum;
        char nowstamp[SIZ];
        struct recptypes *valid;
+       int scan_errors;
 
        if (strlen(SMTP->from) == 0) {
                cprintf("503 Need MAIL command first.\r\n");
@@ -467,14 +471,17 @@ void smtp_data(void) {
 
        cprintf("354 Transmit message now; terminate with '.' by itself\r\n");
        
-       datestring(nowstamp, time(NULL), DATESTRING_RFC822);
+       datestring(nowstamp, sizeof nowstamp, time(NULL), DATESTRING_RFC822);
        body = mallok(4096);
 
+       /* FIXME
+          it should be Received: from %s (real.name.dom [w.x.y.z])
+        */
        if (body != NULL) snprintf(body, 4096,
-               "Received: from %s\n"
-               "       by %s;\n"
-               "       %s\n",
+               "Received: from %s (%s)\n"
+               "       by %s; %s\n",
                        SMTP->helo_node,
+                       CC->cs_host,
                        config.c_fqdn,
                        nowstamp);
        
@@ -502,17 +509,35 @@ void smtp_data(void) {
 
        /* Submit the message into the Citadel system. */
        valid = validate_recipients(SMTP->recipients);
-       msgnum = CtdlSubmitMsg(msg, valid, "");
-       CtdlFreeMessage(msg);
-       phree(valid);
 
-       if (msgnum > 0L) {
-               cprintf("250 Message accepted.\r\n");
+       /* 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 (msg->cm_fields['0'] == NULL) {
+                       msg->cm_fields['0'] = strdoop(
+                               "Message rejected by filter");
+               }
+
+               cprintf("552 %s\r\n", msg->cm_fields['0']);
        }
-       else {
-               cprintf("550 Internal delivery error\r\n");
+       
+       else {                  /* Ok, we'll accept this message. */
+               msgnum = CtdlSubmitMsg(msg, valid, "");
+               if (msgnum > 0L) {
+                       cprintf("250 Message accepted.\r\n");
+               }
+               else {
+                       cprintf("550 Internal delivery error\r\n");
+               }
        }
 
+       CtdlFreeMessage(msg);
+       phree(valid);
        smtp_data_clear();      /* clear out the buffers now */
 }
 
@@ -614,7 +639,8 @@ void smtp_command_loop(void) {
  * 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];
@@ -640,12 +666,12 @@ void smtp_try(char *key, char *addr, int *status, char *dsn, long msgnum)
        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);
@@ -1026,7 +1052,7 @@ void smtp_do_bounce(char *instr) {
 
                /* If not, post it in the Aide> room */
                if (successful_bounce == 0) {
-                       CtdlSubmitMsg(bmsg, NULL, AIDEROOM);
+                       CtdlSubmitMsg(bmsg, NULL, config.c_aideroom);
                }
 
                /* Free up the memory we used */
@@ -1191,7 +1217,7 @@ void smtp_do_procmsg(long msgnum, void *userdata) {
                        --i;
                        --lines;
                        lprintf(9, "SMTP: Trying <%s>\n", addr);
-                       smtp_try(key, addr, &status, dsn, text_msgid);
+                       smtp_try(key, addr, &status, dsn, sizeof dsn, text_msgid);
                        if (status != 2) {
                                if (results == NULL) {
                                        results = mallok(1024);
@@ -1201,7 +1227,7 @@ void smtp_do_procmsg(long msgnum, void *userdata) {
                                        results = reallok(results,
                                                strlen(results) + 1024);
                                }
-                               sprintf(&results[strlen(results)],
+                               snprintf(&results[strlen(results)], 1024,
                                        "%s|%s|%d|%s\n",
                                        key, addr, status, dsn);
                        }
@@ -1286,7 +1312,7 @@ void smtp_do_queue(void) {
                lprintf(3, "Cannot find room <%s>\n", SMTP_SPOOLOUT_ROOM);
                return;
        }
-       CtdlForEachMessage(MSGS_ALL, 0L, (-127),
+       CtdlForEachMessage(MSGS_ALL, 0L,
                SPOOLMIME, NULL, smtp_do_procmsg, NULL);
 
        lprintf(7, "SMTP: queue run completed\n");
@@ -1326,7 +1352,7 @@ void cmd_smtp(char *argbuf) {
 
        else if (!strcasecmp(cmd, "runqueue")) {
                run_queue_now = 1;
-               cprintf("%d All outbound SMTP will be retried now.\n", OK);
+               cprintf("%d All outbound SMTP will be retried now.\n", CIT_OK);
                return;
        }
 
@@ -1337,6 +1363,29 @@ void cmd_smtp(char *argbuf) {
 }
 
 
+/*
+ * Initialize the SMTP outbound queue
+ */
+void smtp_init_spoolout(void) {
+       struct quickroom 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);
+       }
+}
+
+
 
 
 /*****************************************************************************/
@@ -1344,7 +1393,7 @@ void cmd_smtp(char *argbuf) {
 /*****************************************************************************/
 
 
-char *Dynamic_Module_Init(void)
+char *serv_smtp_init(void)
 {
        SYM_SMTP = CtdlGetDynamicSymbol();
 
@@ -1358,7 +1407,7 @@ char *Dynamic_Module_Init(void)
                                smtp_greeting,
                                smtp_command_loop);
 
-       create_room(SMTP_SPOOLOUT_ROOM, 3, "", 0, 1);
+       smtp_init_spoolout();
        CtdlRegisterSessionHook(smtp_do_queue, EVT_TIMER);
        CtdlRegisterProtoHook(cmd_smtp, "SMTP", "SMTP utility commands");
        return "$Id$";