]> code.citadel.org Git - citadel.git/blobdiff - citadel/modules/smtp/serv_smtp.c
Fix bug in SMTP-Client to send two < in the envelope sender, which will probably...
[citadel.git] / citadel / modules / smtp / serv_smtp.c
index f0ae5657ee0e1aa3cda8b3d0e14cd60eddf7b5e8..ce680d1e4c5b54091f680ebd44763ac2ad6bbe67 100644 (file)
@@ -43,6 +43,7 @@
 #include <stdlib.h>
 #include <unistd.h>
 #include <stdio.h>
+#include <termios.h>
 #include <fcntl.h>
 #include <signal.h>
 #include <pwd.h>
@@ -76,7 +77,6 @@
 #include "config.h"
 #include "control.h"
 #include "user_ops.h"
-#include "policy.h"
 #include "database.h"
 #include "msgbase.h"
 #include "internet_addressing.h"
@@ -340,11 +340,12 @@ void smtp_get_user(char *argbuf) {
  */
 void smtp_get_pass(char *argbuf) {
        char password[SIZ];
+       long len;
 
        memset(password, 0, sizeof(password));  
-       CtdlDecodeBase64(password, argbuf, SIZ);
+       len = CtdlDecodeBase64(password, argbuf, SIZ);
        /* CtdlLogPrintf(CTDL_DEBUG, "Trying <%s>\n", password); */
-       if (CtdlTryPassword(password) == pass_ok) {
+       if (CtdlTryPassword(password, len) == pass_ok) {
                smtp_auth_greeting();
        }
        else {
@@ -363,11 +364,14 @@ void smtp_try_plain(char *encoded_authstring) {
        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);
-       safestrncpy(pass, &decoded_authstring[strlen(ident) + strlen(user) + 2], sizeof pass);
+       len = safestrncpy(pass, &decoded_authstring[strlen(ident) + strlen(user) + 2], sizeof pass);
+       if (len == -1)
+               len = sizeof(pass) - 1;
 
        SMTP->command_state = smtp_command;
 
@@ -379,7 +383,7 @@ void smtp_try_plain(char *encoded_authstring) {
        }
 
        if (result == login_ok) {
-               if (CtdlTryPassword(pass) == pass_ok) {
+               if (CtdlTryPassword(pass, len) == pass_ok) {
                        smtp_auth_greeting();
                        return;
                }
@@ -975,7 +979,7 @@ void smtp_try(const char *key, const char *addr, int *status,
        char mx_port[256];
        int lp, rp;
        char *msgtext;
-       char *ptr;
+       const char *ptr;
        size_t msg_size;
        int scan_done;
        CitContext *CCC=CC;
@@ -988,15 +992,10 @@ void smtp_try(const char *key, const char *addr, int *status,
                user, node, name);
 
        /* Load the message out of the database */
-       CCC->redirect_buffer = malloc(SIZ);
-       CCC->redirect_len = 0;
-       CCC->redirect_alloc = SIZ;
+       CCC->redirect_buffer = NewStrBufPlain(NULL, SIZ);
        CtdlOutputMsg(msgnum, MT_RFC822, HEADERS_ALL, 0, 1, NULL, ESC_DOT);
-       msgtext = CC->redirect_buffer;
-       msg_size = CC->redirect_len;
-       CCC->redirect_buffer = NULL;
-       CCC->redirect_len = 0;
-       CCC->redirect_alloc = 0;
+       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)) ) {
@@ -1004,7 +1003,7 @@ void smtp_try(const char *key, const char *addr, int *status,
                scan_done = 0;
                ptr = msgtext;
                do {
-                       if (ptr = memreadline(ptr, buf, sizeof buf), *ptr == 0) {
+                       if (ptr = cmemreadline(ptr, buf, sizeof buf), *ptr == 0) {
                                scan_done = 1;
                        }
                        if (!strncasecmp(buf, "From:", 5)) {
@@ -1037,7 +1036,7 @@ void smtp_try(const char *key, const char *addr, int *status,
                                }
                                if ( (lp>=0) && (rp>lp) ) {
                                        mailfrom[rp] = 0;
-                                       strcpy(mailfrom, &mailfrom[lp]);
+                                       strcpy(mailfrom, &mailfrom[lp + 1]);
                                }
        
                                scan_done = 1;
@@ -1087,7 +1086,21 @@ void smtp_try(const char *key, const char *addr, int *status,
                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) 
+               {
+                       CtdlLogPrintf(CTDL_DEBUG, "SMTP client: connected!\n");
+                               int fdflags; 
+                               fdflags = fcntl(sock, F_GETFL);
+                               if (fdflags < 0)
+                                       CtdlLogPrintf(CTDL_DEBUG,
+                                                     "unable to get SMTP-Client socket flags! %s \n",
+                                                     strerror(errno));
+                               fdflags = fdflags | O_NONBLOCK;
+                               if (fcntl(sock, F_SETFL, fdflags) < 0)
+                                       CtdlLogPrintf(CTDL_DEBUG,
+                                                     "unable to set SMTP-Client socket nonblocking flags! %s \n",
+                                                     strerror(errno));
+               }
                if (sock < 0) {
                        if (errno > 0) {
                                snprintf(dsn, SIZ, "%s", strerror(errno));
@@ -1108,7 +1121,7 @@ void smtp_try(const char *key, const char *addr, int *status,
        CCC->sPos = NULL;
 
        /* Process the SMTP greeting from the server */
-       if (ml_sock_gets(&sock, buf) < 0) {
+       if (ml_sock_gets(&sock, buf, 90) < 0) {
                *status = 4;
                strcpy(dsn, "Connection broken during SMTP conversation");
                goto bail;
@@ -1133,7 +1146,7 @@ void smtp_try(const char *key, const char *addr, int *status,
        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) {
+       if (ml_sock_gets(&sock, buf, 30) < 0) {
                *status = 4;
                strcpy(dsn, "Connection broken during SMTP HELO");
                goto bail;
@@ -1143,7 +1156,7 @@ void smtp_try(const char *key, const char *addr, int *status,
                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) {
+               if (ml_sock_gets(&sock, buf, 30) < 0) {
                        *status = 4;
                        strcpy(dsn, "Connection broken during SMTP HELO");
                        goto bail;
@@ -1170,7 +1183,7 @@ void smtp_try(const char *key, const char *addr, int *status,
                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) {
+               if (ml_sock_gets(&sock, buf, 30) < 0) {
                        *status = 4;
                        strcpy(dsn, "Connection broken during SMTP AUTH");
                        goto bail;
@@ -1194,7 +1207,7 @@ void smtp_try(const char *key, const char *addr, int *status,
        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) {
+       if (ml_sock_gets(&sock, buf, 30) < 0) {
                *status = 4;
                strcpy(dsn, "Connection broken during SMTP MAIL");
                goto bail;
@@ -1217,7 +1230,7 @@ void smtp_try(const char *key, const char *addr, int *status,
        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) {
+       if (ml_sock_gets(&sock, buf, 30) < 0) {
                *status = 4;
                strcpy(dsn, "Connection broken during SMTP RCPT");
                goto bail;
@@ -1239,7 +1252,7 @@ void smtp_try(const char *key, const char *addr, int *status,
        /* 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) {
+       if (ml_sock_gets(&sock, buf, 30) < 0) {
                *status = 4;
                strcpy(dsn, "Connection broken during SMTP DATA");
                goto bail;
@@ -1259,7 +1272,10 @@ void smtp_try(const char *key, const char *addr, int *status,
        }
 
        /* If we reach this point, the server is expecting data.*/
-       sock_write(&sock, msgtext, msg_size);
+       sock_write_timeout(&sock, 
+                          msgtext, 
+                          msg_size, 
+                          (msg_size / 128) + 50);
        if (msgtext[msg_size-1] != 10) {
                CtdlLogPrintf(CTDL_WARNING, "Possible problem: message did not "
                        "correctly terminate. (expecting 0x10, got 0x%02x)\n",
@@ -1268,7 +1284,8 @@ void smtp_try(const char *key, const char *addr, int *status,
        }
 
        sock_write(&sock, ".\r\n", 3);
-       if (ml_sock_gets(&sock, buf) < 0) {
+       tcdrain(sock);
+       if (ml_sock_gets(&sock, buf, 90) < 0) {
                *status = 4;
                strcpy(dsn, "Connection broken during SMTP message transmit");
                goto bail;
@@ -1293,7 +1310,7 @@ void smtp_try(const char *key, const char *addr, int *status,
 
        CtdlLogPrintf(CTDL_DEBUG, ">QUIT\n");
        sock_write(&sock, "QUIT\r\n", 6);
-       ml_sock_gets(&sock, buf);
+       ml_sock_gets(&sock, buf, 30);
        CtdlLogPrintf(CTDL_DEBUG, "<%s\n", buf);
        CtdlLogPrintf(CTDL_INFO, "SMTP client: delivery to <%s> @ <%s> (%s) succeeded\n",
                user, node, name);
@@ -1336,7 +1353,7 @@ void smtp_do_bounce(char *instr) {
        char addr[1024];
        char dsn[1024];
        char bounceto[1024];
-       char boundary[64];
+       StrBuf *boundary;
        int num_bounces = 0;
        int bounce_this = 0;
        long bounce_msgid = (-1);
@@ -1346,13 +1363,13 @@ void smtp_do_bounce(char *instr) {
        struct recptypes *valid;
        int successful_bounce = 0;
        static int seq = 0;
-       char *omsgtext;
-       size_t omsgsize;
+       StrBuf *BounceMB;
        long omsgid = (-1);
 
        CtdlLogPrintf(CTDL_DEBUG, "smtp_do_bounce() called\n");
        strcpy(bounceto, "");
-       sprintf(boundary, "=_Citadel_Multipart_%s_%04x%04x", config.c_fqdn, getpid(), ++seq);
+       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 */
@@ -1374,6 +1391,7 @@ void smtp_do_bounce(char *instr) {
        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;
@@ -1382,39 +1400,39 @@ void smtp_do_bounce(char *instr) {
         bmsg->cm_fields['O'] = strdup(MAILROOM);
         bmsg->cm_fields['N'] = strdup(config.c_nodename);
         bmsg->cm_fields['U'] = strdup("Delivery Status Notification (Failure)");
-       bmsg->cm_fields['M'] = malloc(1024);
-
-        strcpy(bmsg->cm_fields['M'], "Content-type: multipart/mixed; boundary=\"");
-        strcat(bmsg->cm_fields['M'], boundary);
-        strcat(bmsg->cm_fields['M'], "\"\r\n");
-        strcat(bmsg->cm_fields['M'], "MIME-Version: 1.0\r\n");
-        strcat(bmsg->cm_fields['M'], "X-Mailer: " CITADEL "\r\n");
-        strcat(bmsg->cm_fields['M'], "\r\nThis is a multipart message in MIME format.\r\n\r\n");
-        strcat(bmsg->cm_fields['M'], "--");
-        strcat(bmsg->cm_fields['M'], boundary);
-        strcat(bmsg->cm_fields['M'], "\r\n");
-        strcat(bmsg->cm_fields['M'], "Content-type: text/plain\r\n\r\n");
-
-       if (give_up) strcat(bmsg->cm_fields['M'],
+       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 strcat(bmsg->cm_fields['M'],
+        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);
-               extract_token(addr, buf, 1, '|', sizeof addr);
+               addrlen = extract_token(addr, buf, 1, '|', sizeof addr);
                status = extract_int(buf, 2);
-               extract_token(dsn, buf, 3, '|', sizeof dsn);
+               dsnlen = extract_token(dsn, buf, 3, '|', sizeof dsn);
                bounce_this = 0;
 
                CtdlLogPrintf(CTDL_DEBUG, "key=<%s> addr=<%s> status=%d dsn=<%s>\n",
@@ -1436,17 +1454,10 @@ void smtp_do_bounce(char *instr) {
                if (bounce_this) {
                        ++num_bounces;
 
-                       if (bmsg->cm_fields['M'] == NULL) {
-                               CtdlLogPrintf(CTDL_ERR, "ERROR ... M field is null "
-                                       "(%s:%d)\n", __FILE__, __LINE__);
-                       }
-
-                       bmsg->cm_fields['M'] = realloc(bmsg->cm_fields['M'],
-                               strlen(bmsg->cm_fields['M']) + 1024 );
-                       strcat(bmsg->cm_fields['M'], addr);
-                       strcat(bmsg->cm_fields['M'], ": ");
-                       strcat(bmsg->cm_fields['M'], dsn);
-                       strcat(bmsg->cm_fields['M'], "\r\n");
+                       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;
@@ -1456,34 +1467,27 @@ void smtp_do_bounce(char *instr) {
 
        /* Attach the original message */
        if (omsgid >= 0) {
-               strcat(bmsg->cm_fields['M'], "--");
-               strcat(bmsg->cm_fields['M'], boundary);
-               strcat(bmsg->cm_fields['M'], "\r\n");
-               strcat(bmsg->cm_fields['M'], "Content-type: message/rfc822\r\n");
-               strcat(bmsg->cm_fields['M'], "Content-Transfer-Encoding: 7bit\r\n");
-               strcat(bmsg->cm_fields['M'], "Content-Disposition: inline\r\n");
-               strcat(bmsg->cm_fields['M'], "\r\n");
+               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 = malloc(SIZ);
-               CC->redirect_len = 0;
-               CC->redirect_alloc = SIZ;
+               CC->redirect_buffer = NewStrBufPlain(NULL, SIZ);
                CtdlOutputMsg(omsgid, MT_RFC822, HEADERS_ALL, 0, 1, NULL, 0);
-               omsgtext = CC->redirect_buffer;
-               omsgsize = CC->redirect_len;
-               CC->redirect_buffer = NULL;
-               CC->redirect_len = 0;
-               CC->redirect_alloc = 0;
-               bmsg->cm_fields['M'] = realloc(bmsg->cm_fields['M'],
-                               (strlen(bmsg->cm_fields['M']) + omsgsize + 1024) );
-               strcat(bmsg->cm_fields['M'], omsgtext);
-               free(omsgtext);
+               StrBufAppendBuf(BounceMB, CC->redirect_buffer, 0);
+               FreeStrBuf(&CC->redirect_buffer);
        }
 
        /* Close the multipart MIME scope */
-        strcat(bmsg->cm_fields['M'], "--");
-        strcat(bmsg->cm_fields['M'], boundary);
-        strcat(bmsg->cm_fields['M'], "--\r\n");
-
+        StrBufAppendBufPlain(BounceMB, HKEY("--"), 0);
+       StrBufAppendBuf(BounceMB, boundary, 0);
+       StrBufAppendBufPlain(BounceMB, HKEY("--\r\n"), 0);
+       if (bmsg->cm_fields['A'] != NULL)
+               free(bmsg->cm_fields['A']);
+       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) {
@@ -1514,7 +1518,7 @@ void smtp_do_bounce(char *instr) {
                        free_recipients(valid);
                }
        }
-
+       FreeStrBuf(&boundary);
        CtdlFreeMessage(bmsg);
        CtdlLogPrintf(CTDL_DEBUG, "Done processing bounces\n");
 }
@@ -1759,10 +1763,9 @@ void *smtp_do_queue(void *arg) {
        int num_processed = 0;
        struct CitContext smtp_queue_CC;
 
-       CtdlLogPrintf(CTDL_INFO, "SMTP client: processing outbound queue\n");
-
        CtdlFillSystemContext(&smtp_queue_CC, "SMTP Send");
        citthread_setspecific(MyConKey, (void *)&smtp_queue_CC );
+       CtdlLogPrintf(CTDL_INFO, "SMTP client: processing outbound queue\n");
 
        if (CtdlGetRoom(&CC->room, SMTP_SPOOLOUT_ROOM) != 0) {
                CtdlLogPrintf(CTDL_ERR, "Cannot find room <%s>\n", SMTP_SPOOLOUT_ROOM);
@@ -1773,6 +1776,8 @@ void *smtp_do_queue(void *arg) {
 
        citthread_mutex_unlock (&smtp_send_lock);
        CtdlLogPrintf(CTDL_INFO, "SMTP client: queue run completed; %d messages processed\n", num_processed);
+
+       CtdlClearSystemContext();
        return(NULL);
 }