Error out and set an exception if camel_pop3_engine_new() returns NULL

2004-06-24  Jeffrey Stedfast  <fejj@novell.com>

	* providers/pop3/camel-pop3-store.c (connect_to_server): Error out
	and set an exception if camel_pop3_engine_new() returns NULL
	(which it can do now).

	* providers/pop3/camel-pop3-engine.c (get_capabilities): No longer
	reads the greeting.
	(camel_pop3_engine_new): Reads the greeting itself and returns
	NULL if an error occurs (like stupid braindamaged piece of shit
	POP servers that spew debug prinfs).

svn path=/trunk/; revision=26504

2 files changed, 53 insertions, 30 deletions

diff --git a/camel/providers/pop3/camel-pop3-engine.c b/camel/providers/pop3/camel-pop3-engine.c
index 2186136f95..391d5bd31b 100644
--- a/camel/providers/pop3/camel-pop3-engine.c
+++ b/camel/providers/pop3/camel-pop3-engine.c
@@ -44,7 +44,7 @@
 extern int camel_verbose_debug;
 #define dd(x) (camel_verbose_debug?(x):0)
 
-static void get_capabilities(CamelPOP3Engine *pe, int read_greeting);
+static void get_capabilities(CamelPOP3Engine *pe);
 
 static CamelObjectClass *parent_class = NULL;
 
@@ -72,7 +72,7 @@ camel_pop3_engine_finalise(CamelPOP3Engine *pe)
 	/* FIXME: Also flush/free any outstanding requests, etc */
 
 	if (pe->stream)
-		camel_object_unref((CamelObject *)pe->stream);
+		camel_object_unref(pe->stream);
 }
 
 CamelType
@@ -94,6 +94,32 @@ camel_pop3_engine_get_type (void)
 	return camel_pop3_engine_type;
 }
 
+static int
+read_greeting (CamelPOP3Engine *pe)
+{
+	extern CamelServiceAuthType camel_pop3_password_authtype;
+	extern CamelServiceAuthType camel_pop3_apop_authtype;
+	unsigned char *line, *apop, *apopend;
+	unsigned int len;
+	
+	/* first, read the greeting */
+	if (camel_pop3_stream_line (pe->stream, &line, &len) == -1
+	    || strncmp (line, "+OK", 3) != 0)
+		return -1;
+	
+	if ((apop = strchr (line + 3, '<'))
+	    && (apopend = strchr (apop, '>'))) {
+		apopend[1] = 0;
+		pe->apop = g_strdup (apop);
+		pe->capa = CAMEL_POP3_CAP_APOP;
+		pe->auth = g_list_append (pe->auth, &camel_pop3_apop_authtype);
+	}
+	
+	pe->auth = g_list_prepend (pe->auth, &camel_pop3_password_authtype);
+	
+	return 0;
+}
+
 /**
  * camel_pop3_engine_new:
  * @source: source stream
@@ -115,8 +141,13 @@ camel_pop3_engine_new(CamelStream *source, guint32 flags)
 	pe->state = CAMEL_POP3_ENGINE_AUTH;
 	pe->flags = flags;
 	
-	get_capabilities(pe, TRUE);
-
+	if (read_greeting (pe) == -1) {
+		camel_object_unref (pe);
+		return NULL;
+	}
+	
+	get_capabilities (pe);
+	
 	return pe;
 }
 
@@ -132,7 +163,7 @@ camel_pop3_engine_reget_capabilities (CamelPOP3Engine *engine)
 {
 	g_return_if_fail (CAMEL_IS_POP3_ENGINE (engine));
 	
-	get_capabilities (engine, FALSE);
+	get_capabilities (engine);
 }
 
 
@@ -190,30 +221,11 @@ cmd_capa(CamelPOP3Engine *pe, CamelPOP3Stream *stream, void *data)
 }
 
 static void
-get_capabilities(CamelPOP3Engine *pe, int read_greeting)
+get_capabilities(CamelPOP3Engine *pe)
 {
 	CamelPOP3Command *pc;
-	unsigned char *line, *apop, *apopend;
+	unsigned char *line;
 	unsigned int len;
-	extern CamelServiceAuthType camel_pop3_password_authtype;
-	extern CamelServiceAuthType camel_pop3_apop_authtype;
-	
-	if (read_greeting) {
-		/* first, read the greeting */
-		if (camel_pop3_stream_line(pe->stream, &line, &len) == -1
-		    || strncmp(line, "+OK", 3) != 0)
-			return;
-		
-		if ((apop = strchr(line+3, '<'))
-		    && (apopend = strchr(apop, '>'))) {
-			apopend[1] = 0;
-			pe->apop = g_strdup(apop);
-			pe->capa = CAMEL_POP3_CAP_APOP;
-			pe->auth = g_list_append(pe->auth, &camel_pop3_apop_authtype);
-		}
-		
-		pe->auth = g_list_prepend(pe->auth, &camel_pop3_password_authtype);
-	}
 	
 	if (!(pe->flags & CAMEL_POP3_ENGINE_DISABLE_EXTENSIONS)) {
 		pc = camel_pop3_engine_command_new(pe, CAMEL_POP3_COMMAND_MULTI, cmd_capa, NULL, "CAPA\r\n");
diff --git a/camel/providers/pop3/camel-pop3-store.c b/camel/providers/pop3/camel-pop3-store.c
index 685bf49f3c..96f9295b52 100644
--- a/camel/providers/pop3/camel-pop3-store.c
+++ b/camel/providers/pop3/camel-pop3-store.c
@@ -195,21 +195,26 @@ connect_to_server (CamelService *service, int ssl_mode, int try_starttls, CamelE
 					      _("Could not connect to POP server %s (port %d): %s"),
 					      service->url->host, port, g_strerror (errno));
 		
-		camel_object_unref (CAMEL_OBJECT (tcp_stream));
+		camel_object_unref (tcp_stream);
 		
 		return FALSE;
 	}
 	
 	/* parent class connect initialization */
 	if (CAMEL_SERVICE_CLASS (parent_class)->connect (service, ex) == FALSE) {
-		camel_object_unref (CAMEL_OBJECT (tcp_stream));
+		camel_object_unref (tcp_stream);
 		return FALSE;
 	}
 	
 	if (camel_url_get_param (service->url, "disable_extensions"))
 		flags |= CAMEL_POP3_ENGINE_DISABLE_EXTENSIONS;
 	
-	store->engine = camel_pop3_engine_new (tcp_stream, flags);
+	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 %d)"),
+				      service->url->host, port);
+		return FALSE;
+	}
 	
 #ifdef HAVE_SSL
 	if (store->engine) {
@@ -235,7 +240,7 @@ connect_to_server (CamelService *service, int ssl_mode, int try_starttls, CamelE
 	}
 #endif /* HAVE_SSL */
 	
-	camel_object_unref (CAMEL_OBJECT (tcp_stream));
+	camel_object_unref (tcp_stream);
 	
 	return store->engine != NULL;
 	
@@ -537,6 +542,12 @@ pop3_try_authenticate (CamelService *service, gboolean reprompt, const char *err
 					      CAMEL_SERVICE (store)->url->host,
 					      errno ? g_strerror (errno) : _("Unknown error"));
 		}
+	} else if (pcu && pcu->state != CAMEL_POP3_COMMAND_OK) {
+		camel_exception_setv (ex, CAMEL_EXCEPTION_SERVICE_CANT_AUTHENTICATE,
+				      _("Unable to connect to POP server %s.\n"
+					"Error sending username: %s"),
+				      CAMEL_SERVICE (store)->url->host,
+				      store->engine->line ? (char *)store->engine->line : _("Unknown error"));
 	} else if (pcp->state != CAMEL_POP3_COMMAND_OK)
 		camel_exception_setv (ex, CAMEL_EXCEPTION_SERVICE_CANT_AUTHENTICATE,
 				      _("Unable to connect to POP server %s.\n"