Instead of doing a host-lookup ourselves, get it passed in to us as an

2004-09-22  Jeffrey Stedfast  <fejj@novell.com>

	* providers/imap/camel-imap-store.c (connect_to_server): Instead
	of doing a host-lookup ourselves, get it passed in to us as an
	argument. Also simplified a bit (try_starttls is no longer an
	option).
	(connect_to_server_wrapper): Simplified (we no longer have
	fallback cases for SSL stuff). Also, perform host lookup here.

	* providers/imap4/camel-imap4-store.c: Same changes as above.

	* providers/pop3/camel-pop3-store.c: Same.

	* providers/smtp/camel-smtp-transport.c: Same. Other changes
	include making the code consistant with the other providers.

	* providers/nntp/camel-nntp-store.c: Same as pop/imap.

svn path=/trunk/; revision=27398

1 files changed, 59 insertions, 102 deletions

diff --git a/camel/providers/pop3/camel-pop3-store.c b/camel/providers/pop3/camel-pop3-store.c
index 6870aa1456..1c7b9d025d 100644
--- a/camel/providers/pop3/camel-pop3-store.c
+++ b/camel/providers/pop3/camel-pop3-store.c
@@ -135,16 +135,16 @@ finalize (CamelObject *object)
 }
 
 enum {
-	USE_SSL_NEVER,
-	USE_SSL_ALWAYS,
-	USE_SSL_WHEN_POSSIBLE
+	MODE_CLEAR,
+	MODE_SSL,
+	MODE_TLS,
 };
 
 #define SSL_PORT_FLAGS (CAMEL_TCP_STREAM_SSL_ENABLE_SSL2 | CAMEL_TCP_STREAM_SSL_ENABLE_SSL3)
 #define STARTTLS_FLAGS (CAMEL_TCP_STREAM_SSL_ENABLE_TLS)
 
 static gboolean
-connect_to_server (CamelService *service, int ssl_mode, int try_starttls, CamelException *ex)
+connect_to_server (CamelService *service, struct addrinfo *ai, int ssl_mode, CamelException *ex)
 {
 	CamelPOP3Store *store = CAMEL_POP3_STORE (service);
 	CamelStream *tcp_stream;
@@ -152,56 +152,34 @@ connect_to_server (CamelService *service, int ssl_mode, int try_starttls, CamelE
 	guint32 flags = 0;
 	int clean_quit;
 	int ret;
-	struct addrinfo *ai, hints = { 0 };
-	char *serv;
-
-	if (service->url->port) {
-		serv = g_alloca(16);
-		sprintf(serv, "%d", service->url->port);
-	} else
-		serv = "pop3";
-		
-	if (ssl_mode != USE_SSL_NEVER) {
+	
+	if (ssl_mode != MODE_CLEAR) {
 #ifdef HAVE_SSL
-		if (try_starttls) {
-			tcp_stream = camel_tcp_stream_ssl_new_raw (service->session, service->url->host, STARTTLS_FLAGS);
+		if (ssl_mode == MODE_TLS) {
+			tcp_stream = camel_tcp_stream_ssl_new (service->session, service->url->host, STARTTLS_FLAGS);
 		} else {
-			if (service->url->port == 0)
-				serv = "pop3s";
 			tcp_stream = camel_tcp_stream_ssl_new (service->session, service->url->host, SSL_PORT_FLAGS);
 		}
 #else
-		if (!try_starttls && service->url->port == 0)
-			serv = "pop3s";
-		
 		camel_exception_setv (ex, CAMEL_EXCEPTION_SERVICE_UNAVAILABLE,
-				      _("Could not connect to %s (port %s): %s"),
-				      service->url->host, serv,
-				      _("SSL unavailable"));
+				      _("Could not connect to %s: %s"),
+				      service->url->host, _("SSL unavailable"));
 		
 		return FALSE;
 #endif /* HAVE_SSL */
 	} else {
 		tcp_stream = camel_tcp_stream_raw_new ();
 	}
-
-	hints.ai_socktype = SOCK_STREAM;
-	ai = camel_getaddrinfo(service->url->host, serv, &hints, ex);
-	if (ai == NULL) {
-		camel_object_unref(tcp_stream);
-		return FALSE;
-	}
 	
-	ret = camel_tcp_stream_connect(CAMEL_TCP_STREAM(tcp_stream), ai);
-	camel_freeaddrinfo(ai);
-	if (ret == -1) {
+	if ((ret = camel_tcp_stream_connect ((CamelTcpStream *) tcp_stream, ai)) == -1) {
 		if (errno == EINTR)
 			camel_exception_set (ex, CAMEL_EXCEPTION_USER_CANCEL,
 					     _("Connection cancelled"));
 		else
 			camel_exception_setv (ex, CAMEL_EXCEPTION_SERVICE_UNAVAILABLE,
-					      _("Could not connect to POP server %s (port %s): %s"),
-					      service->url->host, serv, g_strerror (errno));
+					      _("Could not connect to %s: %s"),
+					      service->url->host,
+					      g_strerror (errno));
 		
 		camel_object_unref (tcp_stream);
 		
@@ -219,41 +197,24 @@ connect_to_server (CamelService *service, int ssl_mode, int try_starttls, CamelE
 	
 	if (!(store->engine = camel_pop3_engine_new (tcp_stream, flags))) {
 		camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
-				      _("Failed to read a valid greeting from POP server %s (port %s)"),
-				      service->url->host, serv);
+				      _("Failed to read a valid greeting from POP server %s"),
+				      service->url->host);
+		
 		return FALSE;
 	}
 	
-#ifdef HAVE_SSL
-	if (store->engine) {
-		if (ssl_mode == USE_SSL_WHEN_POSSIBLE) {
-			if (store->engine->capa & CAMEL_POP3_CAP_STLS)
-				goto starttls;
-		} else if (ssl_mode == USE_SSL_ALWAYS) {
-			if (try_starttls) {
-				if (store->engine->capa & CAMEL_POP3_CAP_STLS) {
-				/* attempt to toggle STARTTLS mode */
-					goto starttls;
-				} else {
-				/* server doesn't support STARTTLS, abort */
-					camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
-							      _("Failed to connect to POP server %s in secure mode: %s"),
-							      service->url->host, _("SSL/TLS extension not supported."));
-					/* we have the possibility of quitting cleanly here */
-					clean_quit = TRUE;
-					goto stls_exception;
-				}
-			}
-		}
+	if (ssl_mode != MODE_TLS) {
+		camel_object_unref (tcp_stream);
+		return TRUE;
 	}
-#endif /* HAVE_SSL */
-	
-	camel_object_unref (tcp_stream);
 	
-	return store->engine != NULL;
+	if (!(store->engine->capa & CAMEL_POP3_CAP_STLS)) {
+		camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
+				      _("Failed to connect to POP server %s in secure mode: %s"),
+				      service->url->host, _("STLS not supported"));
+		goto stls_exception;
+	}
 	
-#ifdef HAVE_SSL
- starttls:
 	/* as soon as we send a STLS command, all hope is lost of a clean QUIT if problems arise */
 	clean_quit = FALSE;
 	
@@ -303,59 +264,55 @@ connect_to_server (CamelService *service, int ssl_mode, int try_starttls, CamelE
 	store->engine = NULL;
 	
 	return FALSE;
-#endif /* HAVE_SSL */
 }
 
 static struct {
 	char *value;
+	char *serv;
 	int mode;
 } ssl_options[] = {
-	{ "",              USE_SSL_ALWAYS        },
-	{ "always",        USE_SSL_ALWAYS        },
-	{ "when-possible", USE_SSL_WHEN_POSSIBLE },
-	{ "never",         USE_SSL_NEVER         },
-	{ NULL,            USE_SSL_NEVER         },
+	{ "",              "pop3s", MODE_SSL   },  /* really old (1.x) */
+	{ "always",        "pop3s", MODE_SSL   },
+	{ "when-possible", "pop3",  MODE_TLS   },
+	{ "never",         "pop3",  MODE_CLEAR },
+	{ NULL,            "pop3",  MODE_CLEAR },
 };
 
 static gboolean
 connect_to_server_wrapper (CamelService *service, CamelException *ex)
 {
-#ifdef HAVE_SSL
-	const char *use_ssl;
-	int i, ssl_mode;
+	struct addrinfo hints, *ai;
+	const char *ssl_mode;
+	int mode, ret, i;
+	char *serv;
 	
-	use_ssl = camel_url_get_param (service->url, "use_ssl");
-	if (use_ssl) {
+	if ((ssl_mode = camel_url_get_param (service->url, "use_ssl"))) {
 		for (i = 0; ssl_options[i].value; i++)
-			if (!strcmp (ssl_options[i].value, use_ssl))
+			if (!strcmp (ssl_options[i].value, ssl_mode))
 				break;
-		ssl_mode = ssl_options[i].mode;
-	} else
-		ssl_mode = USE_SSL_NEVER;
-	
-	if (ssl_mode == USE_SSL_ALWAYS) {
-		/* First try the ssl port */
-		if (!connect_to_server (service, ssl_mode, FALSE, ex)) {
-			if (camel_exception_get_id (ex) == CAMEL_EXCEPTION_SERVICE_UNAVAILABLE) {
-				/* The ssl port seems to be unavailable, lets try STARTTLS */
-				camel_exception_clear (ex);
-				return connect_to_server (service, ssl_mode, TRUE, ex);
-			} else {
-				return FALSE;
-			}
-		}
-		
-		return TRUE;
-	} else if (ssl_mode == USE_SSL_WHEN_POSSIBLE) {
-		/* If the server supports STARTTLS, use it */
-		return connect_to_server (service, ssl_mode, TRUE, ex);
+		mode = ssl_options[i].mode;
+		serv = ssl_options[i].serv;
 	} else {
-		/* User doesn't care about SSL */
-		return connect_to_server (service, ssl_mode, FALSE, ex);
+		mode = MODE_CLEAR;
+		serv = "pop3";
 	}
-#else
-	return connect_to_server (service, USE_SSL_NEVER, FALSE, ex);
-#endif
+	
+	if (service->url->port) {
+		serv = g_alloca (16);
+		sprintf (serv, "%d", service->url->port);
+	}
+	
+	memset (&hints, 0, sizeof (hints));
+	hints.ai_socktype = SOCK_STREAM;
+	hints.ai_family = PF_UNSPEC;
+	if (!(ai = camel_getaddrinfo (service->url->host, serv, &hints, ex)))
+		return FALSE;
+	
+	ret = connect_to_server (service, ai, mode, ex);
+	
+	camel_freeaddrinfo (ai);
+	
+	return ret;
 }
 
 extern CamelServiceAuthType camel_pop3_password_authtype;