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Diffstat (limited to 'camel/camel-service.c')
| -rw-r--r-- | camel/camel-service.c | 977 |
1 files changed, 0 insertions, 977 deletions
diff --git a/camel/camel-service.c b/camel/camel-service.c deleted file mode 100644 index 7ea34d953d..0000000000 --- a/camel/camel-service.c +++ /dev/null @@ -1,977 +0,0 @@ -/* -*- 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 Ximian, Inc. (www.ximian.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of version 2 of the GNU General Public - * License as published by the Free Software Foundation. - * - * 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 "e-util/e-host-utils.h" - -#include "camel-service.h" -#include "camel-session.h" -#include "camel-exception.h" -#include "camel-operation.h" -#include "camel-private.h" - -#define d(x) -#define w(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 void cancel_connect (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 int service_setv (CamelObject *object, CamelException *ex, CamelArgV *args); -static int service_getv (CamelObject *object, CamelException *ex, CamelArgGetV *args); - - -static void -camel_service_class_init (CamelServiceClass *camel_service_class) -{ - CamelObjectClass *object_class = CAMEL_OBJECT_CLASS (camel_service_class); - - parent_class = camel_type_get_global_classfuncs (CAMEL_OBJECT_TYPE); - - /* virtual method overloading */ - object_class->setv = service_setv; - object_class->getv = service_getv; - - /* virtual method definition */ - camel_service_class->construct = construct; - camel_service_class->connect = service_connect; - camel_service_class->disconnect = service_disconnect; - camel_service_class->cancel_connect = cancel_connect; - 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); - service->priv->connect_op_lock = e_mutex_new(E_MUTEX_SIMPLE); -#endif -} - -static void -camel_service_finalize (CamelObject *object) -{ - CamelService *service = CAMEL_SERVICE (object); - - if (service->status == CAMEL_SERVICE_CONNECTED) { - CamelException ex; - - camel_exception_init (&ex); - CSERV_CLASS (service)->disconnect (service, TRUE, &ex); - if (camel_exception_is_set (&ex)) { - w(g_warning ("camel_service_finalize: silent disconnect failure: %s", - camel_exception_get_description (&ex))); - } - camel_exception_clear (&ex); - } - - if (service->url) - camel_url_free (service->url); - if (service->session) - camel_object_unref (CAMEL_OBJECT (service->session)); - -#ifdef ENABLE_THREADS - e_mutex_destroy (service->priv->connect_lock); - e_mutex_destroy (service->priv->connect_op_lock); -#endif - g_free (service->priv); -} - - - -CamelType -camel_service_get_type (void) -{ - static CamelType type = CAMEL_INVALID_TYPE; - - if (type == CAMEL_INVALID_TYPE) { - 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 type; -} - - -static int -service_setv (CamelObject *object, CamelException *ex, CamelArgV *args) -{ - CamelService *service = (CamelService *) object; - CamelURL *url = service->url; - gboolean reconnect = FALSE; - guint32 tag; - int i; - - for (i = 0; i < args->argc; i++) { - tag = args->argv[i].tag; - - /* make sure this arg wasn't already handled */ - if (tag & CAMEL_ARG_IGNORE) - continue; - - /* make sure this is an arg we're supposed to handle */ - if ((tag & CAMEL_ARG_TAG) <= CAMEL_SERVICE_ARG_FIRST || - (tag & CAMEL_ARG_TAG) >= CAMEL_SERVICE_ARG_FIRST + 100) - continue; - - if (tag == CAMEL_SERVICE_USERNAME) { - /* set the username */ - if (strcmp (url->user, args->argv[i].ca_str) != 0) { - camel_url_set_user (url, args->argv[i].ca_str); - reconnect = TRUE; - } - } else if (tag == CAMEL_SERVICE_AUTH) { - /* set the auth mechanism */ - if (strcmp (url->authmech, args->argv[i].ca_str) != 0) { - camel_url_set_authmech (url, args->argv[i].ca_str); - reconnect = TRUE; - } - } else if (tag == CAMEL_SERVICE_HOSTNAME) { - /* set the hostname */ - if (strcmp (url->host, args->argv[i].ca_str) != 0) { - camel_url_set_host (url, args->argv[i].ca_str); - reconnect = TRUE; - } - } else if (tag == CAMEL_SERVICE_PORT) { - /* set the port */ - if (url->port != args->argv[i].ca_int) { - camel_url_set_port (url, args->argv[i].ca_int); - reconnect = TRUE; - } - } else if (tag == CAMEL_SERVICE_PATH) { - /* set the path */ - if (strcmp (url->path, args->argv[i].ca_str) != 0) { - camel_url_set_host (url, args->argv[i].ca_str); - reconnect = TRUE; - } - } else { - /* error? */ - continue; - } - - /* let our parent know that we've handled this arg */ - camel_argv_ignore (args, i); - } - - /* FIXME: what if we are in the process of connecting? */ - if (reconnect && service->status == CAMEL_SERVICE_CONNECTED) { - /* reconnect the service using the new URL */ - if (camel_service_disconnect (service, TRUE, ex)) - camel_service_connect (service, ex); - } - - return CAMEL_OBJECT_CLASS (parent_class)->setv (object, ex, args); -} - -static int -service_getv (CamelObject *object, CamelException *ex, CamelArgGetV *args) -{ - CamelService *service = (CamelService *) object; - CamelURL *url = service->url; - guint32 tag; - int i; - - for (i = 0; i < args->argc; i++) { - tag = args->argv[i].tag; - - /* make sure this is an arg we're supposed to handle */ - if ((tag & CAMEL_ARG_TAG) <= CAMEL_SERVICE_ARG_FIRST || - (tag & CAMEL_ARG_TAG) >= CAMEL_SERVICE_ARG_FIRST + 100) - continue; - - switch (tag) { - case CAMEL_SERVICE_USERNAME: - /* get the username */ - *args->argv[i].ca_str = url->user; - break; - case CAMEL_SERVICE_AUTH: - /* get the auth mechanism */ - *args->argv[i].ca_str = url->authmech; - break; - case CAMEL_SERVICE_HOSTNAME: - /* get the hostname */ - *args->argv[i].ca_str = url->host; - break; - case CAMEL_SERVICE_PORT: - /* get the port */ - *args->argv[i].ca_int = url->port; - break; - case CAMEL_SERVICE_PATH: - /* get the path */ - *args->argv[i].ca_str = url->path; - break; - default: - /* error? */ - break; - } - } - - return CAMEL_OBJECT_CLASS (parent_class)->getv (object, ex, args); -} - -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->status = CAMEL_SERVICE_DISCONNECTED; -} - -/** - * 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; - gboolean unreg = 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->status == CAMEL_SERVICE_CONNECTED) { - CAMEL_SERVICE_UNLOCK (service, connect_lock); - return TRUE; - } - - /* Register a separate operation for connecting, so that - * the offline code can cancel it. - */ - CAMEL_SERVICE_LOCK (service, connect_op_lock); - service->connect_op = camel_operation_registered (); - if (!service->connect_op) { - service->connect_op = camel_operation_new (NULL, NULL); - camel_operation_register (service->connect_op); - unreg = TRUE; - } - CAMEL_SERVICE_UNLOCK (service, connect_op_lock); - - service->status = CAMEL_SERVICE_CONNECTING; - ret = CSERV_CLASS (service)->connect (service, ex); - service->status = ret ? CAMEL_SERVICE_CONNECTED : CAMEL_SERVICE_DISCONNECTED; - - CAMEL_SERVICE_LOCK (service, connect_op_lock); - if (service->connect_op) { - if (unreg) - camel_operation_unregister (service->connect_op); - - camel_operation_unref (service->connect_op); - service->connect_op = NULL; - } - CAMEL_SERVICE_UNLOCK (service, connect_op_lock); - - 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; - int unreg = FALSE; - - CAMEL_SERVICE_LOCK (service, connect_lock); - - if (service->status != CAMEL_SERVICE_DISCONNECTED - && service->status != CAMEL_SERVICE_DISCONNECTING) { - CAMEL_SERVICE_LOCK (service, connect_op_lock); - service->connect_op = camel_operation_registered (); - if (!service->connect_op) { - service->connect_op = camel_operation_new (NULL, NULL); - camel_operation_register (service->connect_op); - unreg = TRUE; - } - CAMEL_SERVICE_UNLOCK (service, connect_op_lock); - - service->status = CAMEL_SERVICE_DISCONNECTING; - res = CSERV_CLASS (service)->disconnect (service, clean, ex); - service->status = CAMEL_SERVICE_DISCONNECTED; - - CAMEL_SERVICE_LOCK (service, connect_op_lock); - if (unreg) - camel_operation_unregister (service->connect_op); - - camel_operation_unref (service->connect_op); - service->connect_op = NULL; - CAMEL_SERVICE_UNLOCK (service, connect_op_lock); - } - - CAMEL_SERVICE_UNLOCK (service, connect_lock); - - return res; -} - -static void -cancel_connect (CamelService *service) -{ - camel_operation_cancel (service->connect_op); -} - -/** - * camel_service_cancel_connect: - * @service: a service - * - * If @service is currently attempting to connect to or disconnect - * from a server, this causes it to stop and fail. Otherwise it is a - * no-op. - **/ -void -camel_service_cancel_connect (CamelService *service) -{ - CAMEL_SERVICE_LOCK (service, connect_op_lock); - if (service->connect_op) - CSERV_CLASS (service)->cancel_connect (service); - CAMEL_SERVICE_UNLOCK (service, connect_op_lock); -} - -/** - * 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, CAMEL_URL_HIDE_PASSWORD); -} - - -static char * -get_name (CamelService *service, gboolean brief) -{ - w(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) -{ - CamelProvider *prov = service->provider; - CamelURL *url = service->url; - GString *gpath; - char *path; - - /* 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_append_printf (gpath, "/%s@%s", - url->user ? url->user : "", - url->host ? url->host : ""); - - if (url->port) - g_string_append_printf (gpath, ":%d", url->port); - } else { - g_string_append_printf (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_append_printf (gpath, "/%s%s", - CAMEL_PROVIDER_NEEDS (prov, CAMEL_URL_PART_HOST) ? "" : "@", - url->host ? url->host : ""); - - if (url->port) - g_string_append_printf (gpath, ":%d", url->port); - } - - if (CAMEL_PROVIDER_NEEDS (prov, CAMEL_URL_PART_PATH)) - g_string_append_printf (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; - - if (service->url->host) - hostname = service->url->host; - else - hostname = "localhost"; - - return camel_gethostbyname (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 - unsigned int cancelled:1; - const char *name; - int len; - int type; - int result; - int herr; - struct hostent hostbuf; - int hostbuflen; - char *hostbufmem; -}; - -static void * -get_hostbyname(void *data) -{ - struct _lookup_msg *info = data; - - while ((info->result = e_gethostbyname_r(info->name, &info->hostbuf, info->hostbufmem, info->hostbuflen, &info->herr)) == ERANGE) { - 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 - /* If we got cancelled, dont reply, just free it */ - if (info->cancelled) { - g_free(info->hostbufmem); - g_free(info); - } else { - e_msgport_reply((EMsg *)info); - } -#endif - return NULL; -} - -struct hostent * -camel_gethostbyname (const char *name, CamelException *exout) -{ -#ifdef ENABLE_THREADS - int fdmax, status, fd, cancel_fd; -#endif - struct _lookup_msg *msg; - CamelException ex; - - g_return_val_if_fail(name != NULL, NULL); - - if (camel_operation_cancel_check(NULL)) { - camel_exception_set (exout, CAMEL_EXCEPTION_USER_CANCEL, _("Cancelled")); - return NULL; - } - - camel_exception_init(&ex); - camel_operation_start_transient(NULL, _("Resolving: %s"), name); - - msg = g_malloc0(sizeof(*msg)); - msg->hostbuflen = 1024; - msg->hostbufmem = g_malloc(msg->hostbuflen); - msg->name = name; - msg->result = -1; - -#ifdef ENABLE_THREADS - cancel_fd = camel_operation_cancel_fd(NULL); - if (cancel_fd == -1) { -#endif - get_hostbyname(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_hostbyname, msg) == 0) { - d(printf("waiting for name return/cancellation in main process\n")); - do { - FD_ZERO(&rdset); - FD_SET(cancel_fd, &rdset); - FD_SET(fd, &rdset); - fdmax = MAX(fd, cancel_fd) + 1; - status = select(fdmax, &rdset, NULL, 0, NULL); - } while (status == -1 && errno == EINTR); - - if (status == -1 || FD_ISSET(cancel_fd, &rdset)) { - if (status == -1) - camel_exception_setv(&ex, CAMEL_EXCEPTION_SYSTEM, _("Failure in name lookup: %s"), g_strerror(errno)); - else - camel_exception_setv(&ex, CAMEL_EXCEPTION_USER_CANCEL, _("Cancelled")); - - /* We cancel so if the thread impl is decent it causes immediate exit. - We detach so we dont need to wait for it to exit if it isn't. - We check the reply port incase we had a reply in the mean time, which we free later */ - d(printf("Cancelling lookup thread and leaving it\n")); - msg->cancelled = 1; - pthread_detach(id); - pthread_cancel(id); - msg = (struct _lookup_msg *)e_msgport_get(reply_port); - } 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")); - } - } else { - camel_exception_setv(&ex, CAMEL_EXCEPTION_SYSTEM, _("Host lookup failed: cannot create thread: %s"), g_strerror(errno)); - } - e_msgport_destroy(reply_port); - } -#endif - - camel_operation_end(NULL); - - if (!camel_exception_is_set(&ex)) { - if (msg->result == 0) - return &msg->hostbuf; - - if (msg->herr == HOST_NOT_FOUND || msg->herr == NO_DATA) - camel_exception_setv (&ex, CAMEL_EXCEPTION_SYSTEM, - _("Host lookup failed: %s: host not found"), name); - else - camel_exception_setv (&ex, CAMEL_EXCEPTION_SYSTEM, - _("Host lookup failed: %s: unknown reason"), name); - } - - if (msg) { - g_free(msg->hostbufmem); - g_free(msg); - } - - camel_exception_xfer(exout, &ex); - - return NULL; -} - -static void * -get_hostbyaddr (void *data) -{ - struct _lookup_msg *info = data; - - while ((info->result = e_gethostbyaddr_r (info->name, info->len, info->type, &info->hostbuf, - info->hostbufmem, info->hostbuflen, &info->herr)) == ERANGE) { - d(printf ("gethostbyaddr fialed?\n")); -#ifdef ENABLE_THREADS - pthread_testcancel (); -#endif - info->hostbuflen *= 2; - info->hostbufmem = g_realloc (info->hostbufmem, info->hostbuflen); - } - - d(printf ("gethostbyaddr ok?\n")); - -#ifdef ENABLE_THREADS - if (info->cancelled) { - g_free(info->hostbufmem); - g_free(info); - } else { - e_msgport_reply((EMsg *)info); - } -#endif - return NULL; -} - - -struct hostent * -camel_gethostbyaddr (const char *addr, int len, int type, CamelException *exout) -{ -#ifdef ENABLE_THREADS - int fdmax, status, fd, cancel_fd; -#endif - struct _lookup_msg *msg; - CamelException ex; - - g_return_val_if_fail (addr != NULL, NULL); - - if (camel_operation_cancel_check (NULL)) { - camel_exception_set (exout, CAMEL_EXCEPTION_USER_CANCEL, _("Cancelled")); - return NULL; - } - - camel_exception_init(&ex); - camel_operation_start_transient (NULL, _("Resolving address")); - - msg = g_malloc0 (sizeof (struct _lookup_msg)); - msg->hostbuflen = 1024; - msg->hostbufmem = g_malloc (msg->hostbuflen); - msg->name = addr; - msg->len = len; - msg->type = type; - msg->result = -1; - -#ifdef ENABLE_THREADS - cancel_fd = camel_operation_cancel_fd (NULL); - if (cancel_fd == -1) { -#endif - get_hostbyaddr (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_hostbyaddr, msg) == 0) { - d(printf("waiting for name return/cancellation in main process\n")); - do { - FD_ZERO(&rdset); - FD_SET(cancel_fd, &rdset); - FD_SET(fd, &rdset); - fdmax = MAX(fd, cancel_fd) + 1; - status = select (fdmax, &rdset, NULL, 0, NULL); - } while (status == -1 && errno == EINTR); - - if (status == -1 || FD_ISSET(cancel_fd, &rdset)) { - if (status == -1) - camel_exception_setv(&ex, CAMEL_EXCEPTION_SYSTEM, _("Failure in name lookup: %s"), g_strerror(errno)); - else - camel_exception_setv(&ex, CAMEL_EXCEPTION_USER_CANCEL, _("Cancelled")); - - /* We cancel so if the thread impl is decent it causes immediate exit. - We detach so we dont need to wait for it to exit if it isn't. - We check the reply port incase we had a reply in the mean time, which we free later */ - d(printf("Cancelling lookup thread and leaving it\n")); - msg->cancelled = 1; - pthread_detach(id); - pthread_cancel(id); - msg = (struct _lookup_msg *)e_msgport_get(reply_port); - } 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 (!camel_exception_is_set(&ex)) { - if (msg->result == 0) - return &msg->hostbuf; - - if (msg->herr == HOST_NOT_FOUND || msg->herr == NO_DATA) - camel_exception_setv (&ex, CAMEL_EXCEPTION_SYSTEM, - _("Host lookup failed: host not found")); - else - camel_exception_setv (&ex, CAMEL_EXCEPTION_SYSTEM, - _("Host lookup failed: unknown reason")); - } - - if (msg) { - g_free(msg->hostbufmem); - g_free(msg); - } - - camel_exception_xfer(exout, &ex); - - return NULL; -} - -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); -} |