o Added smtp/ to providers tree under camel o Added makefiles and source

Thu Apr  6 22:56:44 EDT 2000  Jeffrey Stedfast <fejj@stampede.org>
  o Added smtp/ to providers tree under camel
  o Added makefiles and source for an smtp module (untested as of yet)

svn path=/trunk/; revision=2317

1 files changed, 694 insertions, 0 deletions

diff --git a/camel/providers/smtp/camel-smtp-transport.c b/camel/providers/smtp/camel-smtp-transport.c
new file mode 100644
index 0000000000..a81d9344b6
--- /dev/null
+++ b/camel/providers/smtp/camel-smtp-transport.c
@@ -0,0 +1,694 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
+/* camel-smtp-transport.c : class for a smtp transport */
+
+/* 
+ * Authors:
+ *   Jeffrey Stedfast <fejj@stampede.org>
+ *
+ * Copyright (C) 2000 Helix Code, Inc. (www.helixcode.com)
+ *
+ * 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 2 of the
+ * License, or (at your option) any later version.
+ *
+ * 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
+ */
+
+#include "config.h"
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "camel-smtp-transport.h"
+#include "camel-mime-message.h"
+#include "camel-stream-buffer.h"
+#include "camel-stream-fs.h"
+#include "camel-session.h"
+#include "camel-exception.h"
+#include "md5-utils.h"
+#include "url-util.h"
+
+/* Specified in RFC ???? */
+#define SMTP_PORT 25
+
+static CamelServiceClass *service_class = NULL;
+
+/* camel smtp transport class prototypes */
+static gboolean _can_send (CamelTransport *transport, CamelMedium *message);
+static gboolean _send (CamelTransport *transport, CamelMedium *message, CamelException *ex);
+static gboolean _send_to (CamelTransport *transport, CamelMedium *message, GList *recipients, CamelException *ex);
+
+/* support prototypes */
+static gboolean smtp_connect (CamelService *service, CamelException *ex);
+static gboolean smtp_disconnect (CamelService *service, CamelException *ex);
+static void esmtp_get_authtypes(gchar *buffer);
+static GList *query_auth_types (CamelService *service);
+static void free_auth_types (CamelService *service, GList *authtypes);
+static gchar *smtp_get_email_addr_from_text (gchar *text);
+static gboolean smtp_helo (CamelSmtpTransport *transport, CamelException *ex);
+static gboolean smtp_mail (CamelSmtpTransport *transport, gchar *sender, CamelException *ex);
+static gboolean smtp_rcpt (CamelSmtpTransport *transport, gchar *recipient, CamelException *ex);
+static gboolean smtp_data (CamelSmtpTransport *transport, gchar *message, CamelException *ex);
+static gboolean smtp_rset (CamelSmtpTransport *transport, CamelException *ex);
+static gboolean smtp_quit (CamelSmtpTransport *transport, CamelException *ex);
+
+
+static gboolean smtp_is_esmtp = FALSE;
+static GList *esmtp_supported_authtypes = NULL;
+
+static void
+camel_smtp_transport_class_init (CamelSmtpTransportClass *camel_smtp_transport_class)
+{
+	CamelTransportClass *camel_transport_class =
+		CAMEL_TRANSPORT_CLASS (camel_smtp_transport_class);
+   CamelServiceClass *camel_service_class =
+		CAMEL_SERVICE_CLASS (camel_smtp_store_class);
+
+   /* virtual method overload */
+   camel_service_class->connect = smtp_connect;
+	camel_service_class->disconnect = smtp_disconnect;
+	camel_service_class->query_auth_types = query_auth_types;
+	camel_service_class->free_auth_types = free_auth_types;
+
+	camel_transport_class->can_send = _can_send;
+	camel_transport_class->send = _send;
+	camel_transport_class->send_to = _send_to;
+}
+
+GtkType
+camel_smtp_transport_get_type (void)
+{
+	static GtkType camel_smtp_transport_type = 0;
+	
+	if (!camel_smtp_transport_type)	{
+		GtkTypeInfo camel_smtp_transport_info =	
+		{
+			"CamelSmtpTransport",
+			sizeof (CamelSmtpTransport),
+			sizeof (CamelSmtpTransportClass),
+			(GtkClassInitFunc) camel_smtp_transport_class_init,
+			(GtkObjectInitFunc) NULL,
+				/* reserved_1 */ NULL,
+				/* reserved_2 */ NULL,
+			(GtkClassInitFunc) NULL,
+		};
+		
+		camel_smtp_transport_type = gtk_type_unique (CAMEL_TRANSPORT_TYPE, &camel_smtp_transport_info);
+	}
+	
+	return camel_smtp_transport_type;
+}
+
+static gboolean
+smtp_connect (CamelService *service, CamelException *ex)
+{
+	struct hostent *h;
+	struct sockaddr_in sin;
+	gint port, fd, status;
+	gchar *buf, *pass;
+	CamelSmtpStore *transport = CAMEL_SMTP_TRANSPORT (service);
+
+	if (!service_class->connect (service, ex))
+		return FALSE;
+
+	h = camel_service_gethost (service, ex);
+	if (!h)
+		return FALSE;
+	port = camel_service_getport (service, "smtp", SMTP_PORT, "tcp", ex);
+	if (port == -1)
+		return FALSE;
+
+	sin.sin_family = h->h_addrtype;
+	sin.sin_port = port;
+	memcpy (&sin.sin_addr, h->h_addr, sizeof (sin.sin_addr));
+
+	fd = socket (h->h_addrtype, SOCK_STREAM, 0);
+	if (fd == -1 || connect (fd, (struct sockaddr *)&sin, sizeof(sin)) == -1)
+   {
+      camel_exception_setv (ex, CAMEL_EXCEPTION_SERVICE_UNAVAILABLE,
+				      "Could not connect to %s (port %s): %s",
+				      service->url->host, service->url->port,
+				      strerror(errno));
+		if (fd > -1)
+			close (fd);
+		g_free (pass);
+		return FALSE;
+	}
+
+	transport->ostream = camel_stream_fs_new_with_fd (fd);
+	transport->istream = camel_stream_buffer_new (store->ostream,
+						  CAMEL_STREAM_BUFFER_READ);
+
+	/* Read the greeting, note whether the server is ESMTP and if it requests AUTH. */
+	do
+   {
+      /* Check for "220" */
+      g_free(respbuf);
+      respbuf = camel_stream_buffer_read_line (CAMEL_STREAM_BUFFER (transport->istream));
+      if ( !respbuf || strncmp(respbuf, "220", 3) )
+      {
+         camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
+				      "Welcome response error: "
+				      "%s: possibly non-fatal",
+				      g_strerror (errno));
+         return FALSE;
+      }
+      if (strstr(respbuf, "ESMTP"))
+         smtp_is_esmtp = TRUE;
+      if (smtp_is_esmtp && strstr(respbuf, "AUTH"))
+      {
+         /* parse for supported AUTH types */
+         esmtp_get_authtypes(respbuf);
+      }
+	} while ( *(respbuf+3) == '-' ); /* if we got "220-" then loop again */
+   g_free(respbuf);
+
+	return TRUE;
+}
+
+static gboolean
+smtp_disconnect (CamelService *service, CamelException *ex)
+{
+	CamelSmtpTransport *transport = CAMEL_SMTP_TRANSPORT (service);
+
+	if (!service->connected)
+		return TRUE;
+
+   /* send the QUIT command to the SMTP server */
+   smtp_quit(service, ex);
+
+	if (!service_class->disconnect (service, ex))
+		return FALSE;
+
+	/* Closing the buffered write stream will close the
+	 * unbuffered read stream wrapped inside it as well.
+	 */
+	camel_stream_close (transport->ostream);
+	gtk_object_unref (GTK_OBJECT (transport->ostream));
+	store->ostream = NULL;
+	store->istream = NULL;
+
+	return TRUE;
+}
+
+static GList
+esmtp_get_authtypes(gchar *buffer)
+{
+   GList *ret = NULL;
+
+   return ret;
+}
+
+static CamelServiceAuthType password_authtype = {
+	"Password/CRAM-MD5",
+
+	"This option will connect to the ESMTP server using the CRAM-MD5 "
+	"authentication if possible.",
+
+	"",
+	TRUE
+};
+
+static GList
+*query_auth_types (CamelService *service)
+{
+	GList *ret;
+
+	ret = g_list_append (NULL, &password_authtype);
+	return ret;
+}
+
+static void
+free_auth_types (CamelService *service, GList *authtypes)
+{
+	g_list_free (authtypes);
+}
+
+static gboolean
+_can_send (CamelTransport *transport, CamelMedium *message)
+{
+	return CAMEL_IS_MIME_MESSAGE (message);
+}
+
+static gboolean
+_send_to (CamelTransport *transport, CamelMedium *message,
+	  GList *recipients, CamelException *ex)
+{
+	GList *r, *s;
+   gchar *recipient;
+   gboolean status;
+   guint i, len;
+   CamelService *service = CAMEL_SERVICE (transport);
+
+   if (!camel_service_is_connected (service))
+		smtp_connect (service, ex);
+
+   s = camel_mime_message_get_recipients ((CamelMimeMessage *) message, "From");
+   if (!s)
+   {
+      camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
+				      "Cannot send message: "
+				      "sender address not defined.");
+      return FALSE;
+   }
+   else
+      smtp_mail(service, s->data, ex);
+   g_list_free(s);
+
+   if (!(len = g_list_length(recipients)))
+   {
+      camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
+				      "Cannot send message: "
+				      "no recipients defined.");
+      return FALSE;
+   }
+   for (i = 0, r = recipients; i < len; i++, r = r->next)
+   {
+      recipient = smtp_get_addr_from_text(r->data);
+      if (!smtp_rcpt(service, recipient; ex))
+      {
+         g_free(recipient);
+         return FALSE;
+      }
+      g_free(recipient);
+   }
+
+   if (!smtp_data(service, message, ex))
+      return FALSE;
+
+   /* reset the service for our next transfer session */
+   smtp_rset(service, ex);
+
+	return status;
+}
+
+static gboolean
+_send (CamelTransport *transport, CamelMedium *message,
+       CamelException *ex)
+{
+	GList *recipients;
+
+   recipients = camel_mime_message_get_recipients ((CamelMimeMessage *) message, "To");
+   recipients = g_list_append(recipients, 
+           camel_mime_message_get_recipients ((CamelMimeMessage *) message, "Cc");
+   recipients = g_list_append(recipients, 
+           camel_mime_message_get_recipients ((CamelMimeMessage *) message, "Bcc");
+
+	return _send_to (transport, message, recipients, ex);
+}
+
+static gchar
+*smtp_get_email_addr_from_text (gchar *text)
+{
+   /* get the actual email address from the string passed and place it in addr
+    * we can assume the address will be in one of the following forms:
+    * 1) The Name <person@host.com>
+    * 2) <person@host.com>
+    * 3) person@host.com
+    * 4) person@host.com (The Name)
+   */
+
+   gchar *tmp, *addr = NULL;
+   gchar *addr_strt;         /* points to start of addr */
+   gchar *addr_end;          /* points to end of addr */
+   gchar *ptr1, *ptr2;
+   
+   
+   /* check the incoming args */
+   if (!text || !*text)
+      return NULL;
+
+   /* scan the string for an open brace */
+   for (addr_strt = text; *addr_strt; addr_strt++) 
+      if (*addr_strt == '<')
+         break;
+
+   if (*addr_strt)  /* we found an open brace */
+   {
+      /* let's look for it's counterpart */
+      for (addr_end = addr_strt; *addr_end; addr_end++)
+         if (*addr_end == '>') 
+            break;
+
+      /* if we didn't find it, or braces are empty... */
+      if (!(*addr_end) || (addr_strt == addr_end - 1))
+         return NULL;
+			
+      /* addr_strt points to '<' and addr_end points to '>'.
+       * Now let's adjust 'em slightly to point to the beginning
+       * and ending of the email addy
+		 */
+      addr_strt++;
+      addr_end--;
+   }
+   else    /* no open brace...assume type 3 or 4? */
+   {
+      addr_strt = text;
+			
+      /* find the end of the email addr/string */
+      for (addr_end = addr_strt; *addr_end || *addr_end == ' '; addr_end++);
+ 
+      addr_end--;       /* points to NULL, move it back one char */
+   }
+
+   /* now addr_strt & addr_end point to the beginning & ending of the email addy */
+
+   /* copy the string into addr */
+   addr = g_strndup(addr_strt, (gint)(addr_end - addr_strt));
+
+   for (ptr1 = addr_strt; ptr1 <= addr_end; ptr1++)    /* look for an '@' sign */
+      if (*ptr1 == '@')
+         break;
+
+   if (*ptr1 != '@')
+   {
+      /* here we found out the name doesn't have an '@' part
+       * let's figure out what machine we're on & stick it on the end
+       * woops.. forgot the '@' sign, gotta stick that in the reply
+       * ptr2 should still point to the next place to copy to in addr
+       */
+      gchar hostname[MAXHOSTNAMELEN];
+
+      if (gethostname(hostname, MAXHOSTNAMELEN))
+      {
+         g_free(addr);
+         return NULL;
+      }
+      tmp = addr;
+      addr = g_strconcat(tmp, "@", hostname, NULL);
+      g_free(tmp);
+   }
+   else               /* there's an @ sign already in the email addy */
+      *ptr2 = '\0';   /* add a null to the end of the string */
+
+   return addr;
+}
+
+static gboolean
+smtp_helo (CamelSmtpTransport *transport, CamelException *ex)
+{
+   /* say hello to the server */
+   gchar *cmdbuf, *respbuf = NULL;
+   gchar localhost[MAXHOSTNAMELEN + MAXHOSTNAMELEN + 2];
+   gchar domainname[MAXHOSTNAMELEN];
+   gint n;
+
+   /* get the localhost name */
+   memset(localhost, 0, sizeof(localhost));
+   gethostname (localhost, MAXHOSTNAMELEN);
+   memset(domainname, 0, sizeof(domainname));
+   getdomainname(domainname, MAXHOSTNAMELEN);
+   if (*domainname && strcmp(domainname, "(none)"))
+   {
+      strcat(localhost, ".");
+      strcat(localhost, domainname);
+   }
+
+   /* hiya server! how are you today? */
+   cmdbuf = g_strdup_printf ("HELO %s\r\n", localhost);
+   if ( camel_stream_write (transport->ostream, cmdbuf, strlen(cmdbuf)) == -1)
+   {
+      g_free(cmdbuf);
+      camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
+				      "HELO request timed out: "
+				      "%s: non-fatal",
+				      g_strerror (errno));
+      return FALSE;
+   }
+   g_free(cmdbuf);
+
+   do
+   {
+      /* Check for "250" */
+      g_free(respbuf);
+      respbuf = camel_stream_buffer_read_line (CAMEL_STREAM_BUFFER (transport->istream));
+      if ( !respbuf || strncmp(respbuf, "250", 3) )
+      {
+         camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
+				      "HELO response error: "
+				      "%s: non-fatal",
+				      g_strerror (errno));
+         return FALSE;
+      }
+	} while ( *(respbuf+3) == '-' ); /* if we got "250-" then loop again */
+   g_free(respbuf);
+
+   return TRUE;
+}
+
+static gboolean
+smtp_mail (CamelSmtpTransport *transport, gchar *sender, CamelException *ex)
+{
+   /* we gotta tell the smtp server who we are. (our email addy) */
+   gchar *cmdbuf, *respbuf = NULL;
+
+   /* enclose address in <>'s since some SMTP daemons *require* that */
+   cmdbuf = g_strdup_printf("MAIL FROM: <%s>\r\n", sender);
+   if ( camel_stream_write (transport->ostream, cmdbuf, strlen(cmdbuf)) == -1)
+   {
+      g_free(cmdbuf);
+      camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
+				      "MAIL FROM request timed out: "
+				      "%s: mail not sent",
+				      g_strerror (errno));
+      return FALSE;
+   }
+   g_free(cmdbuf);
+
+   do
+   {
+      /* Check for "250 Sender OK..." */
+      g_free(respbuf);
+      respbuf = camel_stream_buffer_read_line (CAMEL_STREAM_BUFFER (transport->istream));
+      if ( !respbuf || strncmp(respbuf, "250", 3) )
+      {
+         camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
+				      "MAIL FROM response error: "
+				      "%s: mail not sent",
+				      g_strerror (errno));
+         return FALSE;
+      }
+	} while ( *(respbuf+3) == '-' ); /* if we got "250-" then loop again */
+   g_free(respbuf);
+
+   return TRUE;
+}
+
+static gboolean
+smtp_rcpt (CamelSmtpTransport *transport, gchar *recipient, CamelException *ex)
+{
+   /* we gotta tell the smtp server who we are going to be sending
+    * our email to */
+   gchar *cmdbuf, *respbuf = NULL;
+
+   /* enclose address in <>'s since some SMTP daemons *require* that */
+   cmdbuf = g_strdup_printf("RCPT TO: <%s>\r\n", recipient);
+   if ( camel_stream_write (transport->ostream, cmdbuf, strlen(cmdbuf)) == -1)
+   {
+      g_free(cmdbuf);
+      camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
+				      "RCPT TO request timed out: "
+				      "%s: mail not sent",
+				      g_strerror (errno));
+      return FALSE;
+   }
+   g_free(cmdbuf);
+
+   do
+   {
+      /* Check for "250 Sender OK..." */
+      g_free(respbuf);
+      respbuf = camel_stream_buffer_read_line (CAMEL_STREAM_BUFFER (transport->istream));
+      if ( !respbuf || strncmp(respbuf, "250", 3) )
+      {
+         camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
+				      "RCPT TO response error: "
+				      "%s: mail not sent",
+				      g_strerror (errno));
+         return FALSE;
+      }
+	} while ( *(respbuf+3) == '-' ); /* if we got "250-" then loop again */
+   g_free(respbuf);
+  
+   return TRUE;
+}
+
+static gboolean
+smtp_data (CamelSmtpTransport *transport, gchar *message, CamelException *ex)
+{
+   /* now we can actually send what's important :p */
+   gchar *cmdbuf, *respbuf = NULL;
+   gchar *tmp, *chunk, *begin, *end;
+
+   /* enclose address in <>'s since some SMTP daemons *require* that */
+   cmdbuf = g_strdup("DATA\r\n");
+   if ( camel_stream_write (transport->ostream, cmdbuf, strlen(cmdbuf)) == -1)
+   {
+      g_free(cmdbuf);
+      camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
+				      "DATA request timed out: "
+				      "%s: mail not sent",
+				      g_strerror (errno));
+      return FALSE;
+   }
+   g_free(cmdbuf);
+
+   respbuf = camel_stream_buffer_read_line (CAMEL_STREAM_BUFFER (transport->istream));
+   if ( !respbuf || strncmp(respbuf, "354", 3) )
+   {
+      /* we should have gotten instructions on how to use the DATA command:
+       * 354 Enter mail, end with "." on a line by itself
+       */
+      g_free(respbuf);
+      camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
+				      "DATA response error: "
+				      "%s: mail not sent",
+				      g_strerror (errno));
+      return FALSE;
+   }
+	
+   /* now to send the actual data */
+   for (begin = message; *begin; begin++)
+   {
+      /* send 1 line at a time */
+      for (end = begin; *end && *end != '\n'; end++);
+      end--;
+      tmp = g_strndup(begin, (gint)(end - begin));
+
+      /* check for a lone '.' */
+      if (!strcmp(tmp, "."))
+         chunk = g_strconcat(tmp, ".\r\n", NULL);
+      else
+         chunk = g_strconcat(tmp, "\r\n", NULL);
+      g_free(tmp);
+
+      /* write the line */
+      if ( camel_stream_write (transport->ostream, chunk, strlen(chunk)) == -1)
+      {
+         g_free(chunk);
+         camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
+                     "DATA send timed out: message body: "
+				         "%s: mail not sent",
+				         g_strerror (errno));
+         return FALSE;
+      }
+      g_free(chunk);
+   }
+
+   /* terminate the message body */
+   if ( camel_stream_write (transport->ostream, "\r\n.\r\n", 5) == -1)
+   {
+      camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
+                  "DATA send timed out: message termination: "
+				      "%s: mail not sent",
+				      g_strerror (errno));
+      return FALSE;
+   }
+
+   do
+   {
+      /* Check for "250 Sender OK..." */
+      g_free(respbuf);
+      respbuf = camel_stream_buffer_read_line (CAMEL_STREAM_BUFFER (transport->istream));
+      if ( !respbuf || strncmp(respbuf, "250", 3) )
+      {
+         camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
+				      "DATA response error: message termination: "
+				      "%s: mail not sent",
+				      g_strerror (errno));
+         return FALSE;
+      }
+	} while ( *(respbuf+3) == '-' ); /* if we got "250-" then loop again */
+   g_free(respbuf);
+
+   return TRUE;
+}
+
+static gboolean
+smtp_rset (CamelSmtpTransport *transport, CamelException *ex)
+{
+   /* we are going to reset the smtp server (just to be nice) */
+   gchar *cmdbuf, *respbuf = NULL;
+
+   cmdbuf = g_strdup ("RSET\r\n");
+   if ( camel_stream_write (transport->ostream, cmdbuf, strlen(cmdbuf)) == -1)
+   {
+      g_free(cmdbuf);
+      camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
+				      "RSET request timed out: "
+				      "%s",
+				      g_strerror (errno));
+      return FALSE;
+   }
+   g_free(cmdbuf);
+
+   do
+   {
+      /* Check for "250" */
+      g_free(respbuf);
+      respbuf = camel_stream_buffer_read_line (CAMEL_STREAM_BUFFER (transport->istream));
+      if ( !respbuf || strncmp(respbuf, "250", 3) )
+      {
+         camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
+				      "RSET response error: "
+				      "%s",
+				      g_strerror (errno));
+         return FALSE;
+      }
+	} while ( *(respbuf+3) == '-' ); /* if we got "250-" then loop again */
+   g_free(respbuf);
+
+   return TRUE;
+}
+
+static gboolean
+smtp_quit (CamelSmtpTransport *transport, CamelException *ex)
+{
+   /* we are going to reset the smtp server (just to be nice) */
+   gchar *cmdbuf, *respbuf = NULL;
+
+   cmdbuf = g_strdup ("QUIT\r\n");
+   if ( camel_stream_write (transport->ostream, cmdbuf, strlen(cmdbuf)) == -1)
+   {
+      g_free(cmdbuf);
+      camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
+				      "QUIT request timed out: "
+				      "%s: non-fatal",
+				      g_strerror (errno));
+      return FALSE;
+   }
+   g_free(cmdbuf);
+
+   do
+   {
+      /* Check for "221" */
+      g_free(respbuf);
+      respbuf = camel_stream_buffer_read_line (CAMEL_STREAM_BUFFER (transport->istream));
+      if ( !respbuf || strncmp(respbuf, "221", 3) )
+      {
+         camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
+				      "QUIT response error: "
+				      "%s: non-fatal",
+				      g_strerror (errno));
+         return FALSE;
+      }
+	} while ( *(respbuf+3) == '-' ); /* if we got "221-" then loop again */
+   g_free(respbuf);
+
+   return TRUE;
+}