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-rw-r--r--camel/camel-service.c630
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-/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
-/* camel-service.c : Abstract class for an email service */
-
-/*
- *
- * Author :
- * Bertrand Guiheneuf <bertrand@helixcode.com>
- *
- * Copyright 1999, 2000 Helix Code, Inc. (http://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
- */
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-
-#include <ctype.h>
-#include <stdlib.h>
-#include <string.h>
-#include <errno.h>
-
-#ifdef ENABLE_THREADS
-#include <pthread.h>
-#include "e-util/e-msgport.h"
-#endif
-
-#include "camel-service.h"
-#include "camel-session.h"
-#include "camel-exception.h"
-#include "camel-operation.h"
-#include "camel-private.h"
-
-#define d(x)
-
-static CamelObjectClass *parent_class = NULL;
-
-/* Returns the class for a CamelService */
-#define CSERV_CLASS(so) CAMEL_SERVICE_CLASS (CAMEL_OBJECT_GET_CLASS(so))
-
-static void construct (CamelService *service, CamelSession *session,
- CamelProvider *provider, CamelURL *url,
- CamelException *ex);
-static gboolean service_connect(CamelService *service, CamelException *ex);
-static gboolean service_disconnect(CamelService *service, gboolean clean,
- CamelException *ex);
-/*static gboolean is_connected (CamelService *service);*/
-static GList * query_auth_types (CamelService *service, CamelException *ex);
-static char * get_name (CamelService *service, gboolean brief);
-static char * get_path (CamelService *service);
-
-
-static void
-camel_service_class_init (CamelServiceClass *camel_service_class)
-{
- parent_class = camel_type_get_global_classfuncs (CAMEL_OBJECT_TYPE);
-
- /* virtual method definition */
- camel_service_class->construct = construct;
- camel_service_class->connect = service_connect;
- camel_service_class->disconnect = service_disconnect;
- camel_service_class->query_auth_types = query_auth_types;
- camel_service_class->get_name = get_name;
- camel_service_class->get_path = get_path;
-}
-
-static void
-camel_service_init (void *o, void *k)
-{
- CamelService *service = o;
-
- service->priv = g_malloc0(sizeof(*service->priv));
-#ifdef ENABLE_THREADS
- service->priv->connect_lock = e_mutex_new(E_MUTEX_REC);
-#endif
-}
-
-static void
-camel_service_finalize (CamelObject *object)
-{
- CamelService *camel_service = CAMEL_SERVICE (object);
-
- if (camel_service->connected) {
- CamelException ex;
-
- /*g_warning ("camel_service_finalize: finalizing while still connected!");*/
- camel_exception_init (&ex);
- CSERV_CLASS (camel_service)->disconnect (camel_service, FALSE, &ex);
- if (camel_exception_is_set (&ex)) {
- g_warning ("camel_service_finalize: silent disconnect failure: %s",
- camel_exception_get_description(&ex));
- }
- camel_exception_clear (&ex);
- }
-
- if (camel_service->url)
- camel_url_free (camel_service->url);
- if (camel_service->session)
- camel_object_unref (CAMEL_OBJECT (camel_service->session));
-
-#ifdef ENABLE_THREADS
- e_mutex_destroy(camel_service->priv->connect_lock);
-#endif
- g_free(camel_service->priv);
-}
-
-
-
-CamelType
-camel_service_get_type (void)
-{
- static CamelType camel_service_type = CAMEL_INVALID_TYPE;
-
- if (camel_service_type == CAMEL_INVALID_TYPE) {
- camel_service_type =
- camel_type_register (CAMEL_OBJECT_TYPE, "CamelService",
- sizeof (CamelService),
- sizeof (CamelServiceClass),
- (CamelObjectClassInitFunc) camel_service_class_init,
- NULL,
- (CamelObjectInitFunc) camel_service_init,
- camel_service_finalize );
- }
-
- return camel_service_type;
-}
-
-
-static void
-construct (CamelService *service, CamelSession *session,
- CamelProvider *provider, CamelURL *url, CamelException *ex)
-{
- char *url_string;
-
- if (CAMEL_PROVIDER_NEEDS (provider, CAMEL_URL_PART_USER) &&
- (url->user == NULL || url->user[0] == '\0')) {
- url_string = camel_url_to_string (url, CAMEL_URL_HIDE_PASSWORD);
- camel_exception_setv (ex, CAMEL_EXCEPTION_SERVICE_URL_INVALID,
- _("URL '%s' needs a username component"),
- url_string);
- g_free (url_string);
- return;
- } else if (CAMEL_PROVIDER_NEEDS (provider, CAMEL_URL_PART_HOST) &&
- (url->host == NULL || url->host[0] == '\0')) {
- url_string = camel_url_to_string (url, CAMEL_URL_HIDE_PASSWORD);
- camel_exception_setv (ex, CAMEL_EXCEPTION_SERVICE_URL_INVALID,
- _("URL '%s' needs a host component"),
- url_string);
- g_free (url_string);
- return;
- } else if (CAMEL_PROVIDER_NEEDS (provider, CAMEL_URL_PART_PATH) &&
- (url->path == NULL || url->path[0] == '\0')) {
- url_string = camel_url_to_string (url, CAMEL_URL_HIDE_PASSWORD);
- camel_exception_setv (ex, CAMEL_EXCEPTION_SERVICE_URL_INVALID,
- _("URL '%s' needs a path component"),
- url_string);
- g_free (url_string);
- return;
- }
-
- service->provider = provider;
- service->url = url;
- service->session = session;
- camel_object_ref (CAMEL_OBJECT (session));
-
- service->connected = FALSE;
-}
-
-/**
- * camel_service_construct:
- * @service: the CamelService
- * @session: the session for the service
- * @provider: the service's provider
- * @url: the default URL for the service (may be NULL)
- * @ex: a CamelException
- *
- * Constructs a CamelService initialized with the given parameters.
- **/
-void
-camel_service_construct (CamelService *service, CamelSession *session,
- CamelProvider *provider, CamelURL *url,
- CamelException *ex)
-{
- g_return_if_fail (CAMEL_IS_SERVICE (service));
- g_return_if_fail (CAMEL_IS_SESSION (session));
-
- CSERV_CLASS (service)->construct (service, session, provider, url, ex);
-}
-
-
-static gboolean
-service_connect (CamelService *service, CamelException *ex)
-{
- /* Things like the CamelMboxStore can validly
- * not define a connect function.
- */
- return TRUE;
-}
-
-/**
- * camel_service_connect:
- * @service: CamelService object
- * @ex: a CamelException
- *
- * Connect to the service using the parameters it was initialized
- * with.
- *
- * Return value: whether or not the connection succeeded
- **/
-
-gboolean
-camel_service_connect (CamelService *service, CamelException *ex)
-{
- gboolean ret = FALSE;
-
- g_return_val_if_fail (CAMEL_IS_SERVICE (service), FALSE);
- g_return_val_if_fail (service->session != NULL, FALSE);
- g_return_val_if_fail (service->url != NULL, FALSE);
-
- CAMEL_SERVICE_LOCK(service, connect_lock);
-
- if (service->connected) {
- /* But we're still connected, so no exception
- * and return true.
- */
- g_warning ("camel_service_connect: trying to connect to an already connected service");
- ret = TRUE;
- } else if (CSERV_CLASS (service)->connect (service, ex)) {
- service->connected = TRUE;
- ret = TRUE;
- }
-
- CAMEL_SERVICE_UNLOCK(service, connect_lock);
-
- return ret;
-}
-
-static gboolean
-service_disconnect (CamelService *service, gboolean clean, CamelException *ex)
-{
- /*service->connect_level--;*/
-
- /* We let people get away with not having a disconnect
- * function -- CamelMboxStore, for example.
- */
-
- return TRUE;
-}
-
-/**
- * camel_service_disconnect:
- * @service: CamelService object
- * @clean: whether or not to try to disconnect cleanly.
- * @ex: a CamelException
- *
- * Disconnect from the service. If @clean is %FALSE, it should not
- * try to do any synchronizing or other cleanup of the connection.
- *
- * Return value: whether or not the disconnection succeeded without
- * errors. (Consult @ex if %FALSE.)
- **/
-gboolean
-camel_service_disconnect (CamelService *service, gboolean clean,
- CamelException *ex)
-{
- gboolean res = TRUE;
-
- CAMEL_SERVICE_LOCK(service, connect_lock);
-
- if (service->connected) {
- res = CSERV_CLASS (service)->disconnect (service, clean, ex);
- service->connected = FALSE;
- }
-
- CAMEL_SERVICE_UNLOCK(service, connect_lock);
-
- return res;
-}
-
-/**
- * camel_service_get_url:
- * @service: a service
- *
- * Returns the URL representing a service. The returned URL must be
- * freed when it is no longer needed. For security reasons, this
- * routine does not return the password.
- *
- * Return value: the url name
- **/
-char *
-camel_service_get_url (CamelService *service)
-{
- return camel_url_to_string(service->url, FALSE);
-}
-
-
-static char *
-get_name (CamelService *service, gboolean brief)
-{
- g_warning ("CamelService::get_name not implemented for `%s'",
- camel_type_to_name (CAMEL_OBJECT_GET_TYPE (service)));
- return g_strdup ("???");
-}
-
-/**
- * camel_service_get_name:
- * @service: the service
- * @brief: whether or not to use a briefer form
- *
- * This gets the name of the service in a "friendly" (suitable for
- * humans) form. If @brief is %TRUE, this should be a brief description
- * such as for use in the folder tree. If @brief is %FALSE, it should
- * be a more complete and mostly unambiguous description.
- *
- * Return value: the description, which the caller must free.
- **/
-char *
-camel_service_get_name (CamelService *service, gboolean brief)
-{
- g_return_val_if_fail (CAMEL_IS_SERVICE (service), NULL);
- g_return_val_if_fail (service->url, NULL);
-
- return CSERV_CLASS (service)->get_name (service, brief);
-}
-
-
-static char *
-get_path (CamelService *service)
-{
- GString *gpath;
- char *path;
- CamelURL *url = service->url;
- CamelProvider *prov = service->provider;
-
- /* A sort of ad-hoc default implementation that works for our
- * current set of services.
- */
-
- gpath = g_string_new (service->provider->protocol);
- if (CAMEL_PROVIDER_ALLOWS (prov, CAMEL_URL_PART_USER)) {
- if (CAMEL_PROVIDER_ALLOWS (prov, CAMEL_URL_PART_HOST)) {
- g_string_sprintfa (gpath, "/%s@%s",
- url->user ? url->user : "",
- url->host ? url->host : "");
-
- if (url->port)
- g_string_sprintfa (gpath, ":%d", url->port);
- } else {
- g_string_sprintfa (gpath, "/%s%s",
- url->user ? url->user : "",
- CAMEL_PROVIDER_NEEDS (prov, CAMEL_URL_PART_USER) ? "" : "@");
- }
- } else if (CAMEL_PROVIDER_ALLOWS (prov, CAMEL_URL_PART_HOST)) {
- g_string_sprintfa (gpath, "/%s%s",
- CAMEL_PROVIDER_NEEDS (prov, CAMEL_URL_PART_HOST) ? "" : "@",
- url->host ? url->host : "");
-
- if (url->port)
- g_string_sprintfa (gpath, ":%d", url->port);
- }
- if (CAMEL_PROVIDER_NEEDS (prov, CAMEL_URL_PART_PATH)) {
- g_string_sprintfa (gpath, "%s%s",
- *url->path == '/' ? "" : "/",
- url->path);
- }
-
- path = gpath->str;
- g_string_free (gpath, FALSE);
- return path;
-}
-
-/**
- * camel_service_get_path:
- * @service: the service
- *
- * This gets a valid UNIX relative path describing the service, which
- * is guaranteed to be different from the path returned for any
- * different service. This path MUST start with the name of the
- * provider, followed by a "/", but after that, it is up to the
- * provider.
- *
- * Return value: the path, which the caller must free.
- **/
-char *
-camel_service_get_path (CamelService *service)
-{
- g_return_val_if_fail (CAMEL_IS_SERVICE (service), NULL);
- g_return_val_if_fail (service->url, NULL);
-
- return CSERV_CLASS (service)->get_path (service);
-}
-
-
-/**
- * camel_service_get_session:
- * @service: a service
- *
- * Returns the CamelSession associated with the service.
- *
- * Return value: the session
- **/
-CamelSession *
-camel_service_get_session (CamelService *service)
-{
- return service->session;
-}
-
-/**
- * camel_service_get_provider:
- * @service: a service
- *
- * Returns the CamelProvider associated with the service.
- *
- * Return value: the provider
- **/
-CamelProvider *
-camel_service_get_provider (CamelService *service)
-{
- return service->provider;
-}
-
-static GList *
-query_auth_types (CamelService *service, CamelException *ex)
-{
- return NULL;
-}
-
-/**
- * camel_service_query_auth_types:
- * @service: a CamelService
- * @ex: a CamelException
- *
- * This is used by the mail source wizard to get the list of
- * authentication types supported by the protocol, and information
- * about them.
- *
- * Return value: a list of CamelServiceAuthType records. The caller
- * must free the list with g_list_free() when it is done with it.
- **/
-GList *
-camel_service_query_auth_types (CamelService *service, CamelException *ex)
-{
- GList *ret;
-
- /* note that we get the connect lock here, which means the callee
- must not call the connect functions itself */
- CAMEL_SERVICE_LOCK(service, connect_lock);
- ret = CSERV_CLASS (service)->query_auth_types (service, ex);
- CAMEL_SERVICE_UNLOCK(service, connect_lock);
-
- return ret;
-}
-
-/* URL utility routines */
-
-/**
- * camel_service_gethost:
- * @service: a CamelService
- * @ex: a CamelException
- *
- * This is a convenience function to do a gethostbyname on the host
- * for the service's URL.
- *
- * Return value: a (statically-allocated) hostent.
- **/
-struct hostent *
-camel_service_gethost (CamelService *service, CamelException *ex)
-{
- char *hostname;
- struct hostent *h;
-
- if (service->url->host)
- hostname = service->url->host;
- else
- hostname = "localhost";
-
- return camel_get_host_byname(hostname, ex);
-}
-
-#ifdef offsetof
-#define STRUCT_OFFSET(type, field) ((gint) offsetof (type, field))
-#else
-#define STRUCT_OFFSET(type, field) ((gint) ((gchar*) &((type *) 0)->field))
-#endif
-
-struct _lookup_msg {
-#ifdef ENABLE_THREADS
- EMsg msg;
-#endif
- const char *name;
- int result;
- int herr;
- struct hostent hostbuf;
-#ifndef GETHOSTBYNAME_R_FIVE_ARGS
- struct hostent *hp;
-#endif
- int hostbuflen;
- char *hostbufmem;
-};
-
-static void *
-get_host(void *data)
-{
- struct _lookup_msg *info = data;
-
-#ifdef GETHOSTBYNAME_R_FIVE_ARGS
- while (gethostbyname_r(info->name, &info->hostbuf, info->hostbufmem, info->hostbuflen, &info->herr) && info->herr == ERANGE) {
-#else
- while ((info->result = gethostbyname_r(info->name, &info->hostbuf, info->hostbufmem, info->hostbuflen, &info->hp, &info->herr)) == ERANGE) {
-#endif
- d(printf("gethostbyname fialed?\n"));
-#ifdef ENABLE_THREADS
- pthread_testcancel();
-#endif
- info->hostbuflen *= 2;
- info->hostbufmem = g_realloc(info->hostbufmem, info->hostbuflen);
- }
-
- d(printf("gethostbyname ok?\n"));
-
-#ifdef ENABLE_THREADS
- e_msgport_reply((EMsg *)info);
-#endif
- return NULL;
-}
-
-struct hostent *camel_get_host_byname(const char *name, CamelException *ex)
-{
-#ifdef ENABLE_THREADS
- int fdmax, fd, cancel_fd;
-#endif
- struct _lookup_msg *msg;
-
- g_return_val_if_fail(name != NULL, NULL);
-
- if (camel_operation_cancel_check(NULL)) {
- camel_exception_setv(ex, CAMEL_EXCEPTION_USER_CANCEL, _("Cancelled"));
- return NULL;
- }
-
- camel_operation_start(NULL, _("Resolving: %s"), name);
-
- msg = g_malloc0(sizeof(*msg));
- msg->hostbuflen = 1024;
- msg->hostbufmem = g_malloc(msg->hostbuflen);
- msg->name = name;
-
-#ifdef ENABLE_THREADS
- cancel_fd = camel_operation_cancel_fd(NULL);
- if (cancel_fd == -1) {
-#endif
- get_host(msg);
-#ifdef ENABLE_THREADS
- } else {
- EMsgPort *reply_port;
- pthread_t id;
- fd_set rdset;
-
- reply_port = msg->msg.reply_port = e_msgport_new();
- fd = e_msgport_fd(msg->msg.reply_port);
- if (pthread_create(&id, NULL, get_host, msg) == 0) {
- FD_ZERO(&rdset);
- FD_SET(cancel_fd, &rdset);
- FD_SET(fd, &rdset);
- fdmax = MAX(fd, cancel_fd) + 1;
- d(printf("waiting for name return/cancellation in main process\n"));
- if (select(fdmax, &rdset, NULL, 0, NULL) == -1) {
- camel_exception_setv(ex, 1, _("Failure in name lookup: %s"), strerror(errno));
- d(printf("Cancelling lookup thread\n"));
- pthread_cancel(id);
- } else if (FD_ISSET(cancel_fd, &rdset)) {
- d(printf("Cancelling lookup thread\n"));
- camel_exception_setv(ex, CAMEL_EXCEPTION_USER_CANCEL, _("Cancelled"));
- pthread_cancel(id);
- } else {
- struct _lookup_msg *reply = (struct _lookup_msg *)e_msgport_get(reply_port);
-
- g_assert(reply == msg);
- }
- d(printf("waiting for child to exit\n"));
- pthread_join(id, NULL);
- d(printf("child done\n"));
- }
- e_msgport_destroy(reply_port);
- }
-#endif
-
- camel_operation_end(NULL);
-
- if (msg->herr) {
- if (!camel_exception_is_set(ex)) {
- if (msg->herr == HOST_NOT_FOUND || msg->herr == NO_DATA)
- camel_exception_setv(ex, 1, _("Host lookup failed: %s: host not found"), name);
- else
- camel_exception_setv(ex, 1, _("Host lookup failed: %s: unknown reason"), name);
- }
- g_free(msg->hostbufmem);
- g_free(msg);
- return NULL;
- } else {
- return &msg->hostbuf;
- }
-}
-
-void camel_free_host(struct hostent *h)
-{
- struct _lookup_msg *msg;
-
- g_return_if_fail(h != NULL);
-
- /* yeah this looks ugly but it is safe. we passed out a reference to inside our structure, this maps it
- to the base structure, so we can free everything right without having to keep track of it separately */
- msg = (struct _lookup_msg *)(((char *)h) - STRUCT_OFFSET(struct _lookup_msg, hostbuf));
-
- g_free(msg->hostbufmem);
- g_free(msg);
-}