Took out code that had been there to reconnect to the server if it was not

2000-05-25  Jeffrey Stedfast  <fejj@helixcode.com>

        * providers/smtp/camel-smtp-transport.c (_send_to): Took out code
        that had been there to reconnect to the server if it was not
        already connected - Mailer code was fixed so that this should not
        be needed.

        * providers/imap/camel-imap-store.[c,h]: Initial code.

svn path=/trunk/; revision=3202

1 files changed, 482 insertions, 0 deletions

diff --git a/camel/providers/imap/camel-imap-store.c b/camel/providers/imap/camel-imap-store.c
new file mode 100644
index 0000000000..22f81c189d
--- /dev/null
+++ b/camel/providers/imap/camel-imap-store.c
@@ -0,0 +1,482 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
+/* camel-imap-store.c : class for an imap store */
+
+/*
+ * Authors: Jeffrey Stedfast <fejj@helixcode.com>
+ *          Ross Golder <ross@golder.org>
+ *
+ * Copyright (C) 2000 Helix Code, Inc.
+ *
+ * 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 <errno.h>
+
+
+#include "camel-imap-store.h"
+#include "camel-imap-folder.h"
+#include "camel-exception.h"
+#include "camel-session.h"
+#include "camel-stream.h"
+#include "camel-stream-buffer.h"
+#include "camel-stream-fs.h"
+#include "camel-url.h"
+
+/* Specified in RFC 2060 */
+#define IMAP_PORT 143
+
+static CamelServiceClass *service_class = NULL;
+
+static void finalize (GtkObject *object);
+
+static gboolean imap_connect (CamelService *service, CamelException *ex);
+static gboolean imap_disconnect (CamelService *service, CamelException *ex);
+static GList *query_auth_types (CamelService *service, CamelException *ex);
+static void free_auth_types (CamelService *service, GList *authtypes);
+
+static CamelFolder *get_folder (CamelStore *store, const char *folder_name,
+				CamelException *ex);
+static char *get_folder_name (CamelStore *store, const char *folder_name,
+			      CamelException *ex);
+
+static void
+camel_imap_store_class_init (CamelImapStoreClass *camel_imap_store_class)
+{
+	/* virtual method overload */
+	GtkObjectClass *object_class =
+		GTK_OBJECT_CLASS (camel_imap_store_class);
+	CamelServiceClass *camel_service_class =
+		CAMEL_SERVICE_CLASS (camel_imap_store_class);
+	CamelStoreClass *camel_store_class =
+		CAMEL_STORE_CLASS (camel_imap_store_class);
+	
+	service_class = gtk_type_class (camel_service_get_type ());
+
+	/* virtual method overload */
+	object_class->finalize = finalize;
+
+	camel_service_class->connect = imap_connect;
+	camel_service_class->disconnect = imap_disconnect;
+	camel_service_class->query_auth_types = query_auth_types;
+	camel_service_class->free_auth_types = free_auth_types;
+
+	camel_store_class->get_folder = get_folder;
+	camel_store_class->get_folder_name = get_folder_name;
+}
+
+
+static void
+camel_imap_store_init (gpointer object, gpointer klass)
+{
+	CamelService *service = CAMEL_SERVICE (object);
+	CamelStore *store = CAMEL_STORE (object);
+
+	service->url_flags = ( CAMEL_SERVICE_URL_NEED_USER |
+			       CAMEL_SERVICE_URL_NEED_HOST );
+
+	store->folders = g_hash_table_new (g_str_hash, g_str_equal);
+}
+
+
+GtkType
+camel_imap_store_get_type (void)
+{
+	static GtkType camel_imap_store_type = 0;
+	
+	if (!camel_imap_store_type)	{
+		GtkTypeInfo camel_imap_store_info =	
+		{
+			"CamelImapStore",
+			sizeof (CamelImapStore),
+			sizeof (CamelImapStoreClass),
+			(GtkClassInitFunc) camel_imap_store_class_init,
+			(GtkObjectInitFunc) camel_imap_store_init,
+				/* reserved_1 */ NULL,
+				/* reserved_2 */ NULL,
+			(GtkClassInitFunc) NULL,
+		};
+		
+		camel_imap_store_type = gtk_type_unique (CAMEL_STORE_TYPE, &camel_imap_store_info);
+	}
+	
+	return camel_imap_store_type;
+}
+
+static void
+finalize (GtkObject *object)
+{
+	CamelException ex;
+
+	camel_exception_init (&ex);
+	imap_disconnect (CAMEL_SERVICE (object), &ex);
+	camel_exception_clear (&ex);
+}
+
+static CamelServiceAuthType password_authtype = {
+	"Password",
+
+	"This option will connect to the IMAP server using a "
+	"plaintext password.",
+
+	"",
+	TRUE
+};
+
+static gboolean
+try_connect (CamelService *service, CamelException *ex)
+{
+	struct hostent *h;
+	struct sockaddr_in sin;
+	gint fd;
+
+	h = camel_service_gethost (service, ex);
+	if (!h)
+		return FALSE;
+
+	sin.sin_family = h->h_addrtype;
+	sin.sin_port = htons (service->url->port ? service->url->port : IMAP_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);
+
+		return FALSE;
+	}
+
+	close (fd);
+	return TRUE;
+}
+
+static GList *
+query_auth_types (CamelService *service, CamelException *ex)
+{
+	GList *ret = NULL;
+	gboolean passwd = TRUE;
+
+
+	if (service->url) {
+		passwd = try_connect (service, ex);
+		if (camel_exception_get_id (ex) != CAMEL_EXCEPTION_NONE)
+			return NULL;
+	}
+
+	if (passwd)
+		ret = g_list_append (ret, &password_authtype);
+
+	if (!ret) {
+		camel_exception_setv (ex, CAMEL_EXCEPTION_SERVICE_UNAVAILABLE,
+				      "Could not connect to IMAP server on "
+				      "%s.", service->url->host);
+	}				      
+
+	return ret;
+}
+
+static void
+free_auth_types (CamelService *service, GList *authtypes)
+{
+	g_list_free (authtypes);
+}
+
+static gboolean
+imap_connect (CamelService *service, CamelException *ex)
+{
+	struct hostent *h;
+	struct sockaddr_in sin;
+	gint fd, status;
+	gchar *buf, *msg;
+	CamelImapStore *store = CAMEL_IMAP_STORE (service);
+
+
+	h = camel_service_gethost (service, ex);
+	if (!h)
+		return FALSE;
+
+	if (!service->url->authmech && !service->url->passwd) {
+		gchar *prompt = g_strdup_printf ("Please enter the IMAP password for %s@%s",
+						service->url->user, h->h_name);
+		service->url->passwd =
+			camel_session_query_authenticator (camel_service_get_session (service),
+							   prompt, TRUE,
+							   service, "password",
+							   ex);
+		g_free (prompt);
+		if (!service->url->passwd)
+			return FALSE;
+	}
+
+	sin.sin_family = h->h_addrtype;
+	if (service->url->port)
+		sin.sin_port = htons(service->url->port);
+	else
+		sin.sin_port = htons(IMAP_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);
+
+		return FALSE;
+	}
+
+
+	store->ostream = camel_stream_fs_new_with_fd (fd);
+	store->istream = camel_stream_buffer_new (store->ostream,
+						  CAMEL_STREAM_BUFFER_READ);
+	store->command = 0;
+
+	/* Read the greeting, if any. */
+	buf = camel_stream_buffer_read_line (CAMEL_STREAM_BUFFER (store->istream));
+	if (!buf) {
+		camel_exception_setv (ex, CAMEL_EXCEPTION_SERVICE_UNAVAILABLE,
+				      "Could not read greeting from IMAP "
+				      "server: %s",
+				      camel_exception_get_description (ex));
+		gtk_object_unref (GTK_OBJECT (store->ostream));
+		gtk_object_unref (GTK_OBJECT (store->istream));
+		return FALSE;
+	}
+	g_free (buf);
+
+	status = camel_imap_command (store, &msg, "LOGIN \"%s\" \"%s\"",
+				     service->url->user,
+				     service->url->passwd);
+
+	if (status != CAMEL_IMAP_OK) {
+		camel_exception_setv (ex, CAMEL_EXCEPTION_SERVICE_CANT_AUTHENTICATE,
+				      "Unable to authenticate to IMAP "
+				      "server. Error sending password:"
+				      " %s", msg ? msg : "(Unknown)");
+		g_free (msg);
+		gtk_object_unref (GTK_OBJECT (store->ostream));
+		gtk_object_unref (GTK_OBJECT (store->istream));
+		return FALSE;
+	}
+
+	service_class->connect (service, ex);
+	return TRUE;
+}
+
+static gboolean
+imap_disconnect (CamelService *service, CamelException *ex)
+{
+	CamelImapStore *store = CAMEL_IMAP_STORE (service);
+
+	if (!service->connected)
+		return TRUE;
+
+	if (!service_class->disconnect (service, ex))
+		return FALSE;
+
+	gtk_object_unref (GTK_OBJECT (store->ostream));
+	gtk_object_unref (GTK_OBJECT (store->istream));
+	store->ostream = NULL;
+	store->istream = NULL;
+
+	return TRUE;
+}
+
+const gchar *
+camel_imap_store_get_toplevel_dir (CamelImapStore *store)
+{
+	CamelURL *url = CAMEL_SERVICE (store)->url;
+
+	g_assert(url != NULL);
+	return url->path;
+}
+
+
+static CamelFolder
+*get_folder (CamelStore *store, const char *folder_name, CamelException *ex)
+{
+	CamelImapFolder *new_imap_folder;
+	CamelFolder *new_folder;
+
+	new_imap_folder =  gtk_type_new (CAMEL_IMAP_FOLDER_TYPE);
+	new_folder = CAMEL_FOLDER (new_imap_folder);
+	
+	/* XXX We shouldn't be passing NULL here, but it's equivalent to
+	 * what was there before, and there's no
+	 * CamelImapFolder::get_subfolder yet anyway...
+	 */
+	CF_CLASS (new_folder)->init (new_folder, store, NULL,
+				     folder_name, '/', ex);
+	
+	return new_folder;
+}
+
+static gchar
+*get_folder_name (CamelStore *store, const char *folder_name,
+		 CamelException *ex)
+{
+	return g_strdup (folder_name);
+}
+
+/**
+ * camel_imap_command: Send a command to a IMAP server.
+ * @store: the IMAP store
+ * @ret: a pointer to return the full server response in
+ * @fmt: a printf-style format string, followed by arguments
+ *
+ * This command sends the command specified by @fmt and the following
+ * arguments to the connected IMAP store specified by @store. It then
+ * reads the server's response and parses out the status code. If
+ * the caller passed a non-NULL pointer for @ret, camel_imap_command
+ * will set it to point to an buffer containing the rest of the
+ * response from the IMAP server. (If @ret was passed but there was
+ * no extended response, @ret will be set to NULL.) The caller must
+ * free this buffer when it is done with it.
+ *
+ * Return value: one of CAMEL_IMAP_OK (command executed successfully),
+ * CAMEL_IMAP_ERR (command encounted an error), or CAMEL_IMAP_FAIL
+ * (a protocol-level error occurred, and Camel is uncertain of the
+ * result of the command.)
+ **/
+int
+camel_imap_command (CamelImapStore *store, char **ret, char *fmt, ...)
+{
+	gchar *cmdbuf, *respbuf;
+	gchar *cmdid;
+	va_list ap;
+	gint status;
+
+	/* create the command */
+	cmdid = g_strdup_printf("A%.5d", store->command++);
+	va_start (ap, fmt);
+	cmdbuf = g_strdup_vprintf (fmt, ap);
+	va_end (ap);
+
+	fprintf(stderr, "sending : %s %s\r\n", cmdid, cmdbuf);
+
+	if (camel_stream_printf (store->ostream, "%s %s\r\n", cmdid, cmdbuf) == -1) {
+		g_free(cmdbuf);
+		g_free(cmdid);
+		if (*ret)
+			*ret = g_strdup(strerror(errno));
+		return CAMEL_IMAP_FAIL;
+	}
+	g_free(cmdbuf);
+	g_free(cmdid);
+
+	/* Read the response */
+	respbuf = camel_stream_buffer_read_line (CAMEL_STREAM_BUFFER (store->istream));
+	if (respbuf == NULL) {
+		if (*ret)
+			*ret = g_strdup(strerror(errno));
+		return CAMEL_IMAP_FAIL;
+	}
+
+	fprintf(stderr, "received: %s\n", respbuf);
+
+	if (!strncmp (respbuf + 11, "OK", 2))
+		status = CAMEL_IMAP_OK;
+	else if (!strncmp (respbuf + 11, "BAD", 3))
+		status = CAMEL_IMAP_ERR;
+	else
+		status = CAMEL_IMAP_FAIL;
+
+	if (ret) {
+		if (status != CAMEL_IMAP_FAIL) {
+			*ret = strchr (respbuf, ' ');
+			if (*ret)
+				*ret = g_strdup (*ret + 1);
+		} else
+			*ret = NULL;
+	}
+	g_free (respbuf);
+
+	return status;
+}
+
+/**
+ * camel_imap_command_get_additional_data: get "additional data" from
+ * an IMAP command.
+ * @store: the IMAP store
+ *
+ * This command gets the additional data returned by "multi-line" IMAP
+ * commands, such as LIST, RETR, TOP, and UIDL. This command _must_
+ * be called after a successful (CAMEL_IMAP_OK) call to
+ * camel_imap_command for a command that has a multi-line response.
+ * The returned data is un-byte-stuffed, and has lines termined by
+ * newlines rather than CR/LF pairs.
+ *
+ * Return value: the data, which the caller must free.
+ **/
+char *
+camel_imap_command_get_additional_data (CamelImapStore *store,
+					CamelException *ex)
+{
+	CamelStreamBuffer *stream = CAMEL_STREAM_BUFFER (store->istream);
+	GPtrArray *data;
+	char *buf;
+	int i, status = CAMEL_IMAP_OK;
+
+	data = g_ptr_array_new ();
+	while (1) {
+		buf = camel_stream_buffer_read_line (stream);
+		if (!buf) {
+			status = CAMEL_IMAP_FAIL;
+			break;
+		}
+
+		if (!strcmp (buf, "."))
+			break;
+		if (*buf == '.')
+			memmove (buf, buf + 1, strlen (buf));
+		g_ptr_array_add (data, buf);
+	}
+
+	if (status == CAMEL_IMAP_OK) {
+		/* Append an empty string to the end of the array
+		 * so when we g_strjoinv it, we get a "\n" after
+		 * the last real line.
+		 */
+		g_ptr_array_add (data, "");
+		g_ptr_array_add (data, NULL);
+		buf = g_strjoinv ("\n", (char **)data->pdata);
+	} else
+		buf = NULL;
+
+	for (i = 0; i < data->len - 2; i++)
+		g_free (data->pdata[i]);
+	g_ptr_array_free (data, TRUE);
+
+	return buf;
+}
+