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authorBenjamin Otte <otte@gnome.org>2009-06-02 13:19:51 +0200
committerBenjamin Otte <otte@gnome.org>2009-06-11 10:05:40 +0200
commite62142b001e218d268a85f2f90993cdf42148fae (patch)
tree4948320f6778cb04118a1c6541291eac338fed73
parent2f5c4dcfd579f9b9cceb8eb08b71d4318e9c03b6 (diff)
downloadgvfs-e62142b001e218d268a85f2f90993cdf42148fae.tar.gz
[FTP] introduce GVfsFtpTask
split out the old FtpConnection struct into a separate GVfsFtpTask structure that acts as a one-stop solution to vfuncs. It keeps track of all important structures: - the backend - the current job - the potential connection to the server - the error state during the lifetime of a backend vfunc and supplies convenience functions to ease implementing these vfuncs. The API of gvfsftptask.h is documented.
Diffstat
-rw-r--r--daemon/Makefile.am1
-rw-r--r--daemon/gvfsbackendftp.c1611
-rw-r--r--daemon/gvfsbackendftp.h70
-rw-r--r--daemon/gvfsftpconnection.c27
-rw-r--r--daemon/gvfsftpconnection.h1
-rw-r--r--daemon/gvfsftptask.c888
-rw-r--r--daemon/gvfsftptask.h99
7 files changed, 1509 insertions, 1188 deletions
diff --git a/daemon/Makefile.am b/daemon/Makefile.am
index af8d663b..c9e17ae7 100644
--- a/daemon/Makefile.am
+++ b/daemon/Makefile.am
@@ -232,6 +232,7 @@ gvfsd_obexftp_LDADD = $(OBEXFTP_LIBS) $(XML_LIBS) $(HAL_LIBS) $(libraries)
gvfsd_ftp_SOURCES = \
gvfsftpconnection.c gvfsftpconnection.h \
gvfsftpfile.c gvfsftpfile.h \
+ gvfsftptask.c gvfsftptask.h \
gvfsbackendftp.c gvfsbackendftp.h \
ParseFTPList.c ParseFTPList.h \
daemon-main.c daemon-main.h \
diff --git a/daemon/gvfsbackendftp.c b/daemon/gvfsbackendftp.c
index 26462463..03834e44 100644
--- a/daemon/gvfsbackendftp.c
+++ b/daemon/gvfsbackendftp.c
@@ -51,9 +51,7 @@
#include "ParseFTPList.h"
#include "gvfsftpconnection.h"
#include "gvfsftpfile.h"
-
-/* timeout for network connect/send/receive (use 0 for none) */
-#define TIMEOUT_IN_SECONDS 30
+#include "gvfsftptask.h"
/*
* about filename interpretation in the ftp backend
@@ -69,9 +67,6 @@
* paths exactly match those of a TVFS-using FTP server.
*/
-/* unsinged char is on purpose, so we get warnings when we misuse them */
-typedef struct _FtpConnection FtpConnection;
-
typedef struct _FtpDirEntry FtpDirEntry;
struct _FtpDirEntry {
gsize size;
@@ -79,13 +74,12 @@ struct _FtpDirEntry {
gchar data[1];
};
-typedef struct FtpDirReader FtpDirReader;
struct FtpDirReader {
- void (* init_data) (FtpConnection * conn,
+ void (* init_data) (GVfsFtpTask * task,
const GVfsFtpFile *dir);
- gpointer (* iter_new) (FtpConnection * conn);
+ gpointer (* iter_new) (GVfsFtpTask * task);
GFileInfo * (* iter_process)(gpointer iter,
- FtpConnection * conn,
+ GVfsFtpTask * task,
const GVfsFtpFile *dirname,
const GVfsFtpFile *must_match_file,
const char * line,
@@ -93,452 +87,33 @@ struct FtpDirReader {
void (* iter_free) (gpointer iter);
};
-typedef enum {
- FTP_FEATURE_MDTM = (1 << 0),
- FTP_FEATURE_SIZE = (1 << 1),
- FTP_FEATURE_TVFS = (1 << 2),
- FTP_FEATURE_EPSV = (1 << 3),
- FTP_FEATURE_UTF8 = (1 << 4),
-} FtpFeatures;
-#define FTP_FEATURES_DEFAULT (FTP_FEATURE_EPSV)
-
-typedef enum {
- FTP_SYSTEM_UNKNOWN = 0,
- FTP_SYSTEM_UNIX,
- FTP_SYSTEM_WINDOWS
-} FtpSystem;
-
-typedef enum {
- /* Server advertises support for EPSV (or we assume that it supports it),
- * but it does fail to do so, we set this flag so we can fall back to
- * PASV. */
- FTP_WORKAROUND_BROKEN_EPSV = (1 << 0),
- /* Server replies with a wrong address in PASV, we use connection IP
- * instead */
- FTP_WORKAROUND_PASV_ADDR = (1 << 1),
- /* server does not allow querying features before login, so we try after
- * logging in instead. */
- FTP_WORKAROUND_FEAT_AFTER_LOGIN = (1 << 2),
-} FtpWorkarounds;
-
-struct _GVfsBackendFtp
-{
- GVfsBackend backend;
-
- GSocketConnectable * addr;
- GSocketClient * connection_factory;
- char * user;
- gboolean has_initial_user;
- char * password; /* password or NULL for anonymous */
- char * host_display_name;
-
- /* vfuncs */
- const FtpDirReader * dir_ops;
-
- /* connection collection */
- GQueue * queue;
- GMutex * mutex;
- GCond * cond;
- guint connections;
- guint max_connections;
-
- /* caching results from dir queries */
- GStaticRWLock directory_cache_lock;
- GHashTable * directory_cache;
-};
-
G_DEFINE_TYPE (GVfsBackendFtp, g_vfs_backend_ftp, G_VFS_TYPE_BACKEND)
-#define STATUS_GROUP(status) ((status) / 100)
-
-typedef void (* Ftp550Handler) (FtpConnection *conn, const GVfsFtpFile *file);
-
-/*** FTP CONNECTION ***/
-
-struct _FtpConnection
-{
- /* per-job data */
- GError * error;
- GVfsJob * job;
-
- FtpFeatures features;
- FtpSystem system;
- FtpWorkarounds workarounds;
-
- GVfsFtpConnection * conn; /* the connection in use */
- char ** read_buffer;
-};
-
-static void
-ftp_connection_free (FtpConnection *conn)
-{
- g_assert (conn->job == NULL);
-
- if (conn->conn)
- g_vfs_ftp_connection_free (conn->conn);
- g_strfreev (conn->read_buffer);
-
- g_slice_free (FtpConnection, conn);
-}
-
-#define ftp_connection_in_error(conn) ((conn)->error != NULL)
-#define ftp_connection_clear_error(conn) (g_clear_error (&(conn)->error))
+/*** CODE ***/
static gboolean
-ftp_connection_pop_job (FtpConnection *conn)
+gvfs_backend_ftp_determine_features (GVfsFtpTask *task)
{
- gboolean result;
- GError *error;
- GVfsJob *job;
-
- g_return_val_if_fail (conn->job != NULL, FALSE);
-
- /* sending a reply is racy after the reply is sent. The connection may be
- * reused in a different thread before the reply sending returns. This is
- * racy in particular when the connection is used as a read/write handle.
- */
- error = conn->error;
- conn->error = NULL;
- job = conn->job;
- conn->job = NULL;
-
- if (error)
- {
- g_vfs_job_failed_from_error (job, error);
- g_clear_error (&error);
- result = FALSE;
- }
- else
- {
- g_vfs_job_succeeded (job);
- result = TRUE;
- }
-
- return result;
-}
-
-static void
-ftp_connection_push_job (FtpConnection *conn, GVfsJob *job)
-{
- g_return_if_fail (conn->job == NULL);
-
- /* FIXME: ref the job? */
- conn->job = job;
-}
-
-/**
- * ftp_error_set_from_response:
- * @error: pointer to an error to be set or %NULL
- * @response: an FTP response code to use as the error message
- *
- * Sets an error based on an FTP response code.
- **/
-static void
-ftp_connection_set_error_from_response (FtpConnection *conn, guint response)
-{
- const char *msg;
- int code;
-
- /* Please keep this list ordered by response code,
- * but group responses with the same message. */
- switch (response)
- {
- case 332: /* Need account for login. */
- case 532: /* Need account for storing files. */
- /* FIXME: implement a sane way to handle accounts. */
- code = G_IO_ERROR_NOT_SUPPORTED;
- msg = _("Accounts are unsupported");
- break;
- case 421: /* Service not available, closing control connection. */
- code = G_IO_ERROR_FAILED;
- msg = _("Host closed connection");
- break;
- case 425: /* Can't open data connection. */
- code = G_IO_ERROR_CLOSED;
- msg = _("Cannot open data connection. Maybe your firewall prevents this?");
- break;
- case 426: /* Connection closed; transfer aborted. */
- code = G_IO_ERROR_CLOSED;
- msg = _("Data connection closed");
- break;
- case 450: /* Requested file action not taken. File unavailable (e.g., file busy). */
- case 550: /* Requested action not taken. File unavailable (e.g., file not found, no access). */
- /* FIXME: This is a lot of different errors. So we have to pretend to
- * be smart here. */
- code = G_IO_ERROR_FAILED;
- msg = _("Operation failed");
- break;
- case 451: /* Requested action aborted: local error in processing. */
- code = G_IO_ERROR_FAILED;
- msg = _("Operation failed");
- break;
- case 452: /* Requested action not taken. Insufficient storage space in system. */
- case 552:
- code = G_IO_ERROR_NO_SPACE;
- msg = _("No space left on server");
- break;
- case 500: /* Syntax error, command unrecognized. */
- case 501: /* Syntax error in parameters or arguments. */
- case 502: /* Command not implemented. */
- case 503: /* Bad sequence of commands. */
- case 504: /* Command not implemented for that parameter. */
- code = G_IO_ERROR_NOT_SUPPORTED;
- msg = _("Operation unsupported");
- break;
- case 530: /* Not logged in. */
- code = G_IO_ERROR_PERMISSION_DENIED;
- msg = _("Permission denied");
- break;
- case 551: /* Requested action aborted: page type unknown. */
- code = G_IO_ERROR_FAILED;
- msg = _("Page type unknown");
- break;
- case 553: /* Requested action not taken. File name not allowed. */
- code = G_IO_ERROR_INVALID_FILENAME;
- msg = _("Invalid filename");
- break;
- default:
- code = G_IO_ERROR_FAILED;
- msg = _("Invalid reply");
- break;
- }
-
- DEBUG ("error: %s\n", msg);
- g_set_error_literal (&conn->error, G_IO_ERROR, code, msg);
-}
-
-/**
- * ResponseFlags:
- * RESPONSE_PASS_100: Don't treat 1XX responses, but return them
- * RESPONSE_PASS_300: Don't treat 3XX responses, but return them
- * RESPONSE_PASS_400: Don't treat 4XX responses, but return them
- * RESPONSE_PASS_500: Don't treat 5XX responses, but return them
- * RESPONSE_PASS_550: Don't treat 550 responses, but return them
- * RESPONSE_FAIL_200: Fail on a 2XX response
- */
-
-typedef enum {
- RESPONSE_PASS_100 = (1 << 0),
- RESPONSE_PASS_300 = (1 << 1),
- RESPONSE_PASS_400 = (1 << 2),
- RESPONSE_PASS_500 = (1 << 3),
- RESPONSE_PASS_550 = (1 << 4),
- RESPONSE_FAIL_200 = (1 << 5)
-} ResponseFlags;
-
-/**
- * ftp_connection_receive:
- * @conn: connection to receive from
- * @flags: flags for handling the response
- * @error: pointer to error message
- *
- * Reads a command and stores it in @conn->read_buffer. The read buffer will be
- * null-terminated and contain @conn->read_bytes bytes. Afterwards, the response
- * will be parsed and processed according to @flags. By default, all responses
- * but 2xx will cause an error.
- *
- * Returns: 0 on error, the ftp code otherwise
- **/
-static guint
-ftp_connection_receive (FtpConnection *conn,
- ResponseFlags flags)
-{
- guint response;
-
- g_assert (conn->job != NULL);
-
- if (ftp_connection_in_error (conn))
- return 0;
-
- g_strfreev (conn->read_buffer);
- conn->read_buffer = NULL;
-
- response = g_vfs_ftp_connection_receive (conn->conn,
- &conn->read_buffer,
- conn->job->cancellable,
- &conn->error);
-
- switch (STATUS_GROUP (response))
- {
- case 0:
- return 0;
- case 1:
- if (flags & RESPONSE_PASS_100)
- break;
- ftp_connection_set_error_from_response (conn, response);
- return 0;
- case 2:
- if (flags & RESPONSE_FAIL_200)
- {
- ftp_connection_set_error_from_response (conn, response);
- return 0;
- }
- break;
- case 3:
- if (flags & RESPONSE_PASS_300)
- break;
- ftp_connection_set_error_from_response (conn, response);
- return 0;
- case 4:
- if (flags & RESPONSE_PASS_400)
- break;
- ftp_connection_set_error_from_response (conn, response);
- return 0;
- break;
- case 5:
- if ((flags & RESPONSE_PASS_500) || (response == 550 && (flags & RESPONSE_PASS_550)))
- break;
- ftp_connection_set_error_from_response (conn, response);
- return 0;
- default:
- g_assert_not_reached ();
- break;
- }
-
- return response;
-}
-
-/**
- * ftp_connection_send:
- * @conn: the connection to send to
- * @flags: #ResponseFlags to use
- * @error: pointer to take an error
- * @format: format string to construct command from
- * (without trailing \r\n)
- * @...: arguments to format string
- *
- * Takes a command, waits for an answer and parses it. Without any @flags, FTP
- * codes other than 2xx cause an error. The last read ftp command will be put
- * into @conn->read_buffer.
- *
- * Returns: 0 on error or the received FTP code otherwise.
- *
- **/
-static guint
-ftp_connection_sendv (FtpConnection *conn,
- ResponseFlags flags,
- const char * format,
- va_list varargs)
-{
- GString *command;
-
- g_assert (conn->job != NULL);
-
- if (ftp_connection_in_error (conn))
- return 0;
-
- command = g_string_new ("");
- g_string_append_vprintf (command, format, varargs);
-#ifdef PRINT_DEBUG
- if (g_str_has_prefix (command->str, "PASS"))
- DEBUG ("--> PASS ***\n");
- else
- DEBUG ("--> %s\n", command->str);
-#endif
- g_string_append (command, "\r\n");
- g_vfs_ftp_connection_send (conn->conn,
- command->str,
- command->len,
- conn->job->cancellable,
- &conn->error);
-
- g_string_free (command, TRUE);
-
- return ftp_connection_receive (conn, flags);
-}
-
-static guint
-ftp_connection_send (FtpConnection *conn,
- ResponseFlags flags,
- const char * format,
- ...) G_GNUC_PRINTF (3, 4);
-static guint
-ftp_connection_send (FtpConnection *conn,
- ResponseFlags flags,
- const char * format,
- ...)
-{
- va_list varargs;
- guint response;
-
- va_start (varargs, format);
- response = ftp_connection_sendv (conn,
- flags,
- format,
- varargs);
- va_end (varargs);
- return response;
-}
-
-static void
-ftp_connection_check_file (FtpConnection *conn,
- const Ftp550Handler *handlers,
- const GVfsFtpFile *file)
-{
- while (*handlers && !ftp_connection_in_error (conn))
- {
- (*handlers) (conn, file);
- handlers++;
- }
-}
-
-static guint
-ftp_connection_send_and_check (FtpConnection *conn,
- ResponseFlags flags,
- const Ftp550Handler *handlers,
- const GVfsFtpFile *file,
- const char *format,
- ...) G_GNUC_PRINTF (5, 6);
-static guint
-ftp_connection_send_and_check (FtpConnection *conn,
- ResponseFlags flags,
- const Ftp550Handler *handlers,
- const GVfsFtpFile *file,
- const char *format,
- ...)
-{
- va_list varargs;
- guint response;
-
- /* check that there's no 550 handling used - don't allow bad use of API */
- g_return_val_if_fail ((flags & RESPONSE_PASS_550) == 0, 0);
- g_return_val_if_fail (handlers != NULL, 0);
- g_return_val_if_fail (file != NULL, 0);
-
- va_start (varargs, format);
- response = ftp_connection_sendv (conn,
- flags | RESPONSE_PASS_550,
- format,
- varargs);
- va_end (varargs);
- if (response == 550)
- {
- ftp_connection_check_file (conn, handlers, file);
- if (!ftp_connection_in_error (conn))
- ftp_connection_set_error_from_response (conn, response);
- response = 0;
- }
- return response;
-}
-
-static void
-ftp_connection_parse_features (FtpConnection *conn)
-{
- struct {
+ const struct {
const char * name; /* name of feature */
- FtpFeatures enable; /* flags to enable with this feature */
+ GVfsFtpFeature enable; /* flags to enable with this feature */
} features[] = {
- { "MDTM", FTP_FEATURE_MDTM },
- { "SIZE", FTP_FEATURE_SIZE },
- { "TVFS", FTP_FEATURE_TVFS },
- { "EPSV", FTP_FEATURE_EPSV },
- { "UTF8", FTP_FEATURE_UTF8 },
+ { "MDTM", G_VFS_FTP_FEATURE_MDTM },
+ { "SIZE", G_VFS_FTP_FEATURE_SIZE },
+ { "TVFS", G_VFS_FTP_FEATURE_TVFS },
+ { "EPSV", G_VFS_FTP_FEATURE_EPSV },
+ { "UTF8", G_VFS_FTP_FEATURE_UTF8 },
};
guint i, j;
+ char **reply;
+
+ if (!g_vfs_ftp_task_send_and_check (task, 0, NULL, NULL, &reply, "FEAT"))
+ return FALSE;
- for (i = 1; conn->read_buffer[i]; i++)
+ task->backend->features = 0;
+ for (i = 1; reply[i]; i++)
{
- char *feature = conn->read_buffer[i];
+ char *feature = reply[i];
if (feature[0] != ' ')
continue;
@@ -555,353 +130,84 @@ ftp_connection_parse_features (FtpConnection *conn)
if (g_ascii_strcasecmp (feature, features[j].name) == 0)
{
DEBUG ("feature %s supported\n", features[j].name);
- conn->features |= features[j].enable;
+ task->backend->features |= 1 << features[j].enable;
}
}
}
-}
-
-/* NB: you must free the connection if it's in error returning from here */
-static FtpConnection *
-ftp_connection_create (GSocketConnectable *addr,
- GVfsJob * job)
-{
- FtpConnection *conn;
-
- conn = g_slice_new0 (FtpConnection);
- ftp_connection_push_job (conn, job);
-
- conn->conn = g_vfs_ftp_connection_new (addr,
- conn->job->cancellable,
- &conn->error);
-
- ftp_connection_receive (conn, 0);
- return conn;
-}
-
-static guint
-ftp_connection_login (FtpConnection *conn,
- const char * username,
- const char * password)
-{
- guint status;
- if (ftp_connection_in_error (conn))
- return 0;
+ g_strfreev (reply);
- status = ftp_connection_send (conn, RESPONSE_PASS_300,
- "USER %s", username);
-
- if (STATUS_GROUP (status) == 3)
- {
- /* rationale for choosing the default password:
- * - some ftp servers expect something that looks like an email address
- * - we don't want to send the user's name or address, as that would be
- * a privacy problem
- * - we want to give ftp server administrators a chance to notify us of
- * problems with our client.
- * - we don't want to drown in spam.
- */
- if (password == NULL || password[0] == 0)
- password = "gvfsd-ftp-" VERSION "@example.com";
- status = ftp_connection_send (conn, 0,
- "PASS %s", password);
- }
-
- return status;
+ return TRUE;
}
static void
-ftp_connection_parse_system (FtpConnection *conn)
+gvfs_backend_ftp_determine_system (GVfsFtpTask *task)
{
static const struct {
- const char *id;
- FtpSystem system;
+ const char * id;
+ GVfsFtpSystem system;
} known_systems[] = {
/* NB: the first entry that matches is taken, so order matters */
- { "UNIX ", FTP_SYSTEM_UNIX },
- { "WINDOWS_NT ", FTP_SYSTEM_WINDOWS }
+ { "UNIX ", G_VFS_FTP_SYSTEM_UNIX },
+ { "WINDOWS_NT ", G_VFS_FTP_SYSTEM_WINDOWS }
};
guint i;
- char *system_name = conn->read_buffer[0] + 4;
+ char *system_name;
+ char **reply;
+
+ if (g_vfs_ftp_task_is_in_error (task))
+ return;
+
+ if (!g_vfs_ftp_task_send_and_check (task, 0, NULL, NULL, &reply, "SYST"))
+ {
+ g_vfs_ftp_task_clear_error (task);
+ return;
+ }
+ system_name = reply[0] + 4;
for (i = 0; i < G_N_ELEMENTS (known_systems); i++)
{
if (g_ascii_strncasecmp (system_name,
known_systems[i].id,
strlen (known_systems[i].id)) == 0)
{
- conn->system = known_systems[i].system;
- DEBUG ("system is %u\n", conn->system);
+ task->backend->system = known_systems[i].system;
+ DEBUG ("system is %u\n", task->backend->system);
break;
}
}
-}
-
-static void
-ftp_connection_prepare (FtpConnection *conn)
-{
- /* check supported features */
- if (ftp_connection_send (conn, 0, "FEAT") != 0) {
- ftp_connection_parse_features (conn);
- } else {
- ftp_connection_clear_error(conn);
- conn->workarounds |= FTP_WORKAROUND_FEAT_AFTER_LOGIN;
- conn->features = 0;
- }
-}
-
-static gboolean
-ftp_connection_use (FtpConnection *conn)
-{
- /* only binary transfers please */
- ftp_connection_send (conn, 0, "TYPE I");
- if (ftp_connection_in_error (conn))
- return FALSE;
-
-#if 0
- /* RFC 2428 suggests to send this to make NAT routers happy */
- /* XXX: Disabled for the following reasons:
- * - most ftp clients don't use it
- * - lots of broken ftp servers can't see the difference between
- * "EPSV" and "EPSV ALL"
- * - impossible to dynamically fall back to regular PASV in case
- * EPSV doesn't work for some reason.
- * If this makes your ftp connection fail, please file a bug and we will
- * try to invent a way to make this all work. Until then, we'll just
- * ignore the RFC.
- */
- if (conn->features & FTP_FEATURE_EPSV)
- ftp_connection_send (conn, 0, "EPSV ALL");
- ftp_connection_clear_error(conn);
-#endif
-
- if (conn->workarounds & FTP_WORKAROUND_FEAT_AFTER_LOGIN) {
- if (ftp_connection_send (conn, 0, "FEAT") != 0) {
- ftp_connection_parse_features (conn);
- } else {
- ftp_connection_clear_error (conn);
- conn->features = FTP_FEATURES_DEFAULT;
- }
- }
-
- /* instruct server that we'll give and assume we get utf8 */
- if (conn->features & FTP_FEATURE_UTF8)
- {
- if (!ftp_connection_send (conn, 0, "OPTS UTF8 ON"))
- ftp_connection_clear_error (conn);
- }
-
- if (ftp_connection_send (conn, 0, "SYST"))
- ftp_connection_parse_system (conn);
- ftp_connection_clear_error (conn);
-
- return TRUE;
-}
-
-static GSocketAddress *
-ftp_connection_create_remote_address (FtpConnection *conn, guint port)
-{
- GSocketAddress *old, *new;
-
- old = g_vfs_ftp_connection_get_address (conn->conn, &conn->error);
- if (old == NULL)
- return NULL;
- g_assert (G_IS_INET_SOCKET_ADDRESS (old));
- new = g_inet_socket_address_new (g_inet_socket_address_get_address (G_INET_SOCKET_ADDRESS (old)), port);
-
- return new;
-}
-static gboolean
-ftp_connection_ensure_data_connection_epsv (FtpConnection *conn)
-{
- const char *s;
- guint port;
- GSocketAddress *addr;
- guint status;
-
- g_assert (conn->error == NULL);
-
- if ((conn->features & FTP_FEATURE_EPSV) == 0)
- return FALSE;
-
- if (conn->workarounds & FTP_WORKAROUND_BROKEN_EPSV)
- return FALSE;
-
- status = ftp_connection_send (conn, RESPONSE_PASS_500, "EPSV");
- if (STATUS_GROUP (status) != 2)
- return FALSE;
-
- /* FIXME: parse multiple lines? */
- s = strrchr (conn->read_buffer[0], '(');
- if (!s)
- return FALSE;
-
- s += 4;
- port = strtoul (s, NULL, 10);
- if (port == 0)
- return FALSE;
-
- addr = ftp_connection_create_remote_address (conn, port);
- if (addr == NULL)
- return FALSE;
-
- if (!g_vfs_ftp_connection_open_data_connection (conn->conn,
- addr,
- conn->job->cancellable,
- &conn->error))
- {
- g_object_unref (addr);
- DEBUG ("Successful EPSV response code, but data connection failed. Enabling FTP_WORKAROUND_BROKEN_EPSV.\n");
- conn->workarounds |= FTP_WORKAROUND_BROKEN_EPSV;
- ftp_connection_clear_error (conn);
- return FALSE;
- }
-
- g_object_unref (addr);
- return TRUE;
-}
-
-static gboolean
-ftp_connection_ensure_data_connection_pasv (FtpConnection *conn)
-{
- guint ip1, ip2, ip3, ip4, port1, port2;
- const char *s;
- GSocketAddress *addr;
- guint status;
-
- /* only binary transfers please */
- status = ftp_connection_send (conn, 0, "PASV");
- if (status == 0)
- return FALSE;
-
- /* parse response and try to find the address to connect to.
- * This code does the same as curl.
- */
- for (s = conn->read_buffer[0]; *s; s++)
- {
- if (sscanf (s, "%u,%u,%u,%u,%u,%u",
- &ip1, &ip2, &ip3, &ip4,
- &port1, &port2) == 6)
- break;
- }
- if (*s == 0)
- {
- g_set_error_literal (&conn->error, G_IO_ERROR, G_IO_ERROR_FAILED,
- _("Invalid reply"));
- return FALSE;
- }
-
- if (!(conn->workarounds & FTP_WORKAROUND_PASV_ADDR))
- {
- guint8 ip[4];
- GInetAddress *inet_addr;
-
- ip[0] = ip1;
- ip[1] = ip2;
- ip[2] = ip3;
- ip[3] = ip4;
- inet_addr = g_inet_address_new_from_bytes (ip, G_SOCKET_FAMILY_IPV4);
- addr = g_inet_socket_address_new (inet_addr, port1 << 8 | port2);
- g_object_unref (inet_addr);
-
- if (g_vfs_ftp_connection_open_data_connection (conn->conn,
- addr,
- conn->job->cancellable,
- &conn->error))
- {
- g_object_unref (addr);
- return TRUE;
- }
-
- g_object_unref (addr);
- /* set workaround flag (see below), so we don't try this again */
- DEBUG ("Successfull PASV response but data connection failed. Enabling FTP_WORKAROUND_PASV_ADDR.\n");
- conn->workarounds |= FTP_WORKAROUND_PASV_ADDR;
- ftp_connection_clear_error (conn);
- }
-
- /* Workaround code:
- * Various ftp servers aren;t setup correctly when behind a NAT. They report
- * their own IP address (like 10.0.0.4) and not the address in front of the
- * NAT. But this is likely the same address that we connected to with our
- * command connetion. So if the address given by PASV fails, we fall back
- * to the address of the command stream.
- */
- addr = ftp_connection_create_remote_address (conn, port1 << 8 | port2);
- if (addr == NULL)
- return FALSE;
- if (!g_vfs_ftp_connection_open_data_connection (conn->conn,
- addr,
- conn->job->cancellable,
- &conn->error))
- {
- g_object_unref (addr);
- return FALSE;
- }
-
- g_object_unref (addr);
- return TRUE;
-}
-
-static gboolean
-ftp_connection_ensure_data_connection (FtpConnection *conn)
-{
- if (ftp_connection_in_error (conn))
- return FALSE;
-
- if (ftp_connection_ensure_data_connection_epsv (conn))
- return TRUE;
-
- if (ftp_connection_in_error (conn))
- return FALSE;
-
- if (ftp_connection_ensure_data_connection_pasv (conn))
- return TRUE;
-
- return FALSE;
-}
-
-static void
-ftp_connection_close_data_connection (FtpConnection *conn)
-{
- g_vfs_ftp_connection_close_data_connection (conn->conn);
+ g_strfreev (reply);
}
/*** COMMON FUNCTIONS WITH SPECIAL HANDLING ***/
static gboolean
-ftp_connection_cd (FtpConnection *conn, const GVfsFtpFile *file)
+g_vfs_ftp_task_cd (GVfsFtpTask *task, const GVfsFtpFile *file)
{
- guint response = ftp_connection_send (conn,
- RESPONSE_PASS_500,
+ guint response = g_vfs_ftp_task_send (task,
+ G_VFS_FTP_PASS_550,
"CWD %s", g_vfs_ftp_file_get_ftp_path (file));
if (response == 550)
{
- g_set_error_literal (&conn->error,
+ g_set_error_literal (&task->error,
G_IO_ERROR, G_IO_ERROR_NOT_DIRECTORY,
_("The file is not a directory"));
response = 0;
}
- else if (STATUS_GROUP (response) == 5)
- {
- ftp_connection_set_error_from_response (conn, response);
- response = 0;
- }
return response != 0;
}
static gboolean
-ftp_connection_try_cd (FtpConnection *conn, const GVfsFtpFile *file)
+g_vfs_ftp_task_try_cd (GVfsFtpTask *task, const GVfsFtpFile *file)
{
- if (ftp_connection_in_error (conn))
+ if (g_vfs_ftp_task_is_in_error (task))
return FALSE;
- if (!ftp_connection_cd (conn, file))
+ if (!g_vfs_ftp_task_cd (task, file))
{
- ftp_connection_clear_error (conn);
+ g_vfs_ftp_task_clear_error (task);
return FALSE;
}
@@ -911,25 +217,25 @@ ftp_connection_try_cd (FtpConnection *conn, const GVfsFtpFile *file)
/*** default directory reading ***/
static void
-dir_default_init_data (FtpConnection *conn, const GVfsFtpFile *dir)
+dir_default_init_data (GVfsFtpTask *task, const GVfsFtpFile *dir)
{
- ftp_connection_cd (conn, dir);
- ftp_connection_ensure_data_connection (conn);
+ g_vfs_ftp_task_cd (task, dir);
+ g_vfs_ftp_task_open_data_connection (task);
- ftp_connection_send (conn,
- RESPONSE_PASS_100 | RESPONSE_FAIL_200,
- (conn->system == FTP_SYSTEM_UNIX) ? "LIST -a" : "LIST");
+ g_vfs_ftp_task_send (task,
+ G_VFS_FTP_PASS_100 | G_VFS_FTP_FAIL_200,
+ (task->backend->system == G_VFS_FTP_SYSTEM_UNIX) ? "LIST -a" : "LIST");
}
static gpointer
-dir_default_iter_new (FtpConnection *conn)
+dir_default_iter_new (GVfsFtpTask *task)
{
return g_slice_new0 (struct list_state);
}
static GFileInfo *
dir_default_iter_process (gpointer iter,
- FtpConnection *conn,
+ GVfsFtpTask * task,
const GVfsFtpFile *dir,
const GVfsFtpFile *must_match_file,
const char *line,
@@ -970,10 +276,7 @@ dir_default_iter_process (gpointer iter,
}
else
{
- name = NULL;
- g_assert_not_reached ();
- // FIXME:
- //name = (GVfsFtpFile *) t;
+ name = g_vfs_ftp_file_new_from_ftp (task->backend, t);
g_free (t);
}
if (name == NULL)
@@ -1041,7 +344,7 @@ dir_default_iter_process (gpointer iter,
type == 'l' ? G_FILE_TYPE_SYMBOLIC_LINK :
G_FILE_TYPE_DIRECTORY);
- if (conn->system == FTP_SYSTEM_UNIX)
+ if (task->backend->system == G_VFS_FTP_SYSTEM_UNIX)
g_file_info_set_is_hidden (info, result.fe_fnlen > 0 &&
result.fe_fname[0] == '.');
@@ -1077,126 +380,6 @@ static const FtpDirReader dir_default = {
/*** BACKEND ***/
static void
-g_vfs_backend_ftp_push_connection (GVfsBackendFtp *ftp, FtpConnection *conn)
-{
- /* we allow conn == NULL to ease error cases */
- if (conn == NULL)
- return;
-
- if (conn->job)
- ftp_connection_pop_job (conn);
-
- g_mutex_lock (ftp->mutex);
- if (ftp->queue)
- {
- g_queue_push_tail (ftp->queue, conn);
- g_cond_signal (ftp->cond);
- }
- else
- ftp_connection_free (conn);
- g_mutex_unlock (ftp->mutex);
-}
-
-static void
-do_broadcast (GCancellable *cancellable, GCond *cond)
-{
- g_cond_broadcast (cond);
-}
-
-static FtpConnection *
-g_vfs_backend_ftp_pop_connection (GVfsBackendFtp *ftp,
- GVfsJob * job)
-{
- FtpConnection *conn = NULL;
- GTimeVal now;
- gulong id;
-
- if (g_cancellable_is_cancelled (job->cancellable))
- return NULL;
-
- g_mutex_lock (ftp->mutex);
- id = g_cancellable_connect (job->cancellable,
- G_CALLBACK (do_broadcast),
- ftp->cond, NULL);
- while (conn == NULL && ftp->queue != NULL)
- {
- if (g_cancellable_is_cancelled (job->cancellable))
- break;
-
- conn = g_queue_pop_head (ftp->queue);
- if (conn != NULL)
- {
- /* Figure out if this connection had a timeout sent. If so, skip it. */
- g_mutex_unlock (ftp->mutex);
- ftp_connection_push_job (conn, job);
- if (ftp_connection_send (conn, 0, "NOOP"))
- break;
-
- ftp_connection_clear_error (conn);
- conn->job = NULL;
- ftp_connection_free (conn);
- conn = NULL;
- g_mutex_lock (ftp->mutex);
- ftp->connections--;
- continue;
- }
-
- if (ftp->connections < ftp->max_connections)
- {
- /* Save current number of connections here, so we can limit maximum
- * connections later.
- * This is necessary for threading reasons (connections can be
- * opened or closed while we are still in the opening process. */
- guint maybe_max_connections = ftp->connections;
-
- ftp->connections++;
- g_mutex_unlock (ftp->mutex);
- conn = ftp_connection_create (ftp->addr, job);
- if (G_LIKELY (!ftp_connection_in_error (conn)))
- {
- ftp_connection_prepare (conn);
- ftp_connection_login (conn, ftp->user, ftp->password);
- ftp_connection_use (conn);
- if (G_LIKELY (!ftp_connection_in_error (conn)))
- break;
- }
-
- ftp_connection_clear_error (conn);
- /* Don't call ftp_connection_pop_job () here, the job isn't done yet */
- conn->job = NULL;
- ftp_connection_free (conn);
- conn = NULL;
- g_mutex_lock (ftp->mutex);
- ftp->connections--;
- ftp->max_connections = MIN (ftp->max_connections, maybe_max_connections);
- if (ftp->max_connections == 0)
- {
- DEBUG ("no more connections left, exiting...");
- /* FIXME: shut down properly */
- exit (0);
- }
-
- continue;
- }
-
- g_get_current_time (&now);
- g_time_val_add (&now, TIMEOUT_IN_SECONDS * 1000 * 1000);
- if (!g_cond_timed_wait (ftp->cond, ftp->mutex, &now))
- {
- g_vfs_job_failed (G_VFS_JOB (job),
- G_IO_ERROR, G_IO_ERROR_WOULD_BLOCK,
- /* defeat string freeze! */
- /* _("Resource temporarily unavailable")); */
- "%s", g_strerror (EAGAIN));
- break;
- }
- }
- g_cancellable_disconnect (job->cancellable, id);
-
- return conn;
-}
-
-static void
g_vfs_backend_ftp_finalize (GObject *object)
{
GVfsBackendFtp *ftp = G_VFS_BACKEND_FTP (object);
@@ -1270,7 +453,7 @@ do_mount (GVfsBackend *backend,
gboolean is_automount)
{
GVfsBackendFtp *ftp = G_VFS_BACKEND_FTP (backend);
- FtpConnection *conn;
+ GVfsFtpTask task = G_VFS_FTP_TASK_INIT (ftp, G_VFS_JOB (job));
char *prompt = NULL;
char *username;
char *password;
@@ -1280,19 +463,24 @@ do_mount (GVfsBackend *backend,
GNetworkAddress *addr;
guint port;
- conn = ftp_connection_create (ftp->addr,
- G_VFS_JOB (job));
+ task.conn = g_vfs_ftp_connection_new (ftp->addr, task.cancellable, &task.error);
/* fail fast here. No need to ask for a password if we know the hostname
* doesn't exist or the given host/port doesn't have an ftp server running.
*/
- if (ftp_connection_in_error (conn))
+ if (task.conn == NULL)
{
- ftp_connection_pop_job (conn);
- ftp_connection_free (conn);
+ g_vfs_ftp_task_done (&task);
return;
}
- ftp_connection_prepare (conn);
+ /* send pre-login commands */
+ g_vfs_ftp_task_receive (&task, 0, NULL);
+ if (!gvfs_backend_ftp_determine_features (&task))
+ {
+ g_vfs_ftp_task_clear_error (&task);
+ g_vfs_backend_ftp_use_workaround (ftp, G_VFS_FTP_WORKAROUND_FEAT_AFTER_LOGIN);
+ ftp->features = 0;
+ }
addr = G_NETWORK_ADDRESS (ftp->addr);
port = g_network_address_get_port (addr);
@@ -1357,7 +545,7 @@ do_mount (GVfsBackend *backend,
&password_save) ||
aborted)
{
- g_set_error_literal (&conn->error, G_IO_ERROR, G_IO_ERROR_PERMISSION_DENIED,
+ g_set_error_literal (&task.error, G_IO_ERROR, G_IO_ERROR_PERMISSION_DENIED,
_("Password dialog cancelled"));
break;
}
@@ -1374,7 +562,7 @@ try_login:
g_free (ftp->password);
if (anonymous)
{
- if (ftp_connection_login (conn, "anonymous", "") != 0)
+ if (g_vfs_ftp_task_login (&task, "anonymous", "") != 0)
{
ftp->user = g_strdup ("anonymous");
ftp->password = g_strdup ("");
@@ -1387,41 +575,53 @@ try_login:
{
ftp->user = username ? g_strdup (username) : g_strdup ("");
ftp->password = g_strdup (password);
- if (ftp_connection_login (conn, username, password) != 0)
+ if (g_vfs_ftp_task_login (&task, username, password) != 0)
break;
}
g_free (username);
g_free (password);
if (break_on_fail ||
- !g_error_matches (conn->error, G_IO_ERROR, G_IO_ERROR_PERMISSION_DENIED))
+ !g_error_matches (task.error, G_IO_ERROR, G_IO_ERROR_PERMISSION_DENIED))
break;
- ftp_connection_clear_error (conn);
+ g_vfs_ftp_task_clear_error (&task);
}
- ftp_connection_use (conn);
+ /* send post-login commands */
+ if (g_vfs_backend_ftp_uses_workaround (ftp, G_VFS_FTP_WORKAROUND_FEAT_AFTER_LOGIN) &&
+ !g_vfs_ftp_task_is_in_error (&task))
+ {
+ if (!gvfs_backend_ftp_determine_features (&task))
+ {
+ g_vfs_ftp_task_clear_error (&task);
+ ftp->features = G_VFS_FTP_FEATURES_DEFAULT;
+ }
+ }
+ g_vfs_ftp_task_setup_connection (&task);
+ gvfs_backend_ftp_determine_system (&task);
/* Save the address of the current connection, so that for future connections,
* we are sure to connect to the same machine.
* The idea here is to avoid using mirrors that have a different state, which
* might cause Heisenbugs.
*/
- if (!ftp_connection_in_error (conn))
+ if (!g_vfs_ftp_task_is_in_error (&task))
{
- ftp->addr = G_SOCKET_CONNECTABLE (g_vfs_ftp_connection_get_address (conn->conn, &conn->error));
+ ftp->addr = G_SOCKET_CONNECTABLE (g_vfs_ftp_connection_get_address (task.conn, &task.error));
if (ftp->addr == NULL)
{
- DEBUG ("error querying remote address: %s\nUsing original address instead.", conn->error->message);
- ftp_connection_clear_error (conn);
+ DEBUG ("error querying remote address: %s\nUsing original address instead.", task.error->message);
+ g_vfs_ftp_task_clear_error (&task);
ftp->addr = g_object_ref (addr);
}
}
- if (ftp_connection_in_error (conn))
+ if (g_vfs_ftp_task_is_in_error (&task))
{
- ftp_connection_pop_job (conn);
- ftp_connection_free (conn);
+ g_vfs_ftp_connection_free (task.conn);
+ task.conn = NULL;
+ g_vfs_ftp_task_done (&task);
g_object_unref (addr);
return;
}
@@ -1470,9 +670,9 @@ try_login:
ftp->connections = 1;
ftp->max_connections = G_MAXUINT;
ftp->queue = g_queue_new ();
- g_vfs_backend_ftp_push_connection (ftp, conn);
g_object_unref (addr);
+ g_vfs_ftp_task_done (&task);
}
static gboolean
@@ -1521,13 +721,13 @@ do_unmount (GVfsBackend * backend,
GVfsJobUnmount *job)
{
GVfsBackendFtp *ftp = G_VFS_BACKEND_FTP (backend);
- FtpConnection *conn;
+ GVfsFtpConnection *conn;
g_mutex_lock (ftp->mutex);
while ((conn = g_queue_pop_head (ftp->queue)))
{
/* FIXME: properly quit */
- ftp_connection_free (conn);
+ g_vfs_ftp_connection_free (conn);
}
g_queue_free (ftp->queue);
ftp->queue = NULL;
@@ -1537,54 +737,58 @@ do_unmount (GVfsBackend * backend,
}
static void
-error_550_exists (FtpConnection *conn, const GVfsFtpFile *file)
+error_550_exists (GVfsFtpTask *task, gpointer file)
{
/* FIXME:
* What we should do here is look at the cache to figure out if the file
- * exists, but as cache access is currently only exposed via the backend
+ * exists, but as cache access is only exposed via the backend
* structure (it should be properly abstracted into an opaque thread-safe
- * structure and then be available per-connection), we cannot do that.
+ * structure and then be available per-connection), we could not do that.
* So instead, we use the same code we use when trying to find hidden
* directories.
*/
- if (ftp_connection_try_cd (conn, file) ||
- ftp_connection_send (conn, 0, "SIZE %s", g_vfs_ftp_file_get_ftp_path (file)))
+ if (g_vfs_ftp_task_try_cd (task, file) ||
+ g_vfs_ftp_task_send (task, 0, "SIZE %s", g_vfs_ftp_file_get_ftp_path (file)))
{
- g_set_error_literal (&conn->error,
+ g_set_error_literal (&task->error,
G_IO_ERROR,
G_IO_ERROR_EXISTS,
_("Target file already exists"));
}
else
{
- /* clear potential error from ftp_connection_send() in else if line above */
- ftp_connection_clear_error (conn);
+ /* clear potential error from g_vfs_ftp_task_send() above */
+ g_vfs_ftp_task_clear_error (task);
}
}
static void
-error_550_is_directory (FtpConnection *conn, const GVfsFtpFile *file)
+error_550_is_directory (GVfsFtpTask *task, gpointer file)
{
- guint response = ftp_connection_send (conn,
- RESPONSE_PASS_550,
- "CWD %s", g_vfs_ftp_file_get_ftp_path (file));
-
- if (STATUS_GROUP (response) == 2)
+ if (g_vfs_ftp_task_send (task,
+ G_VFS_FTP_PASS_550,
+ "CWD %s", g_vfs_ftp_file_get_ftp_path (file)))
{
- g_set_error_literal (&conn->error, G_IO_ERROR,
+ g_set_error_literal (&task->error, G_IO_ERROR,
G_IO_ERROR_IS_DIRECTORY,
_("File is directory"));
}
+ else
+ {
+ /* clear potential error from g_vfs_ftp_task_send() above */
+ g_vfs_ftp_task_clear_error (task);
+ }
}
static void
-error_550_parent_not_found (FtpConnection *conn, const GVfsFtpFile *file)
+error_550_parent_not_found (GVfsFtpTask *task, gpointer file)
{
GVfsFtpFile *dir = g_vfs_ftp_file_new_parent (file);
- if (!g_vfs_ftp_file_equal (file, dir) && !ftp_connection_try_cd (conn, dir))
+ if (!g_vfs_ftp_file_equal (file, dir) && !g_vfs_ftp_task_try_cd (task, dir))
{
- g_set_error_literal (&conn->error, G_IO_ERROR,
+ /* Yes, this is a weird error for a missing parent directory */
+ g_set_error_literal (&task->error, G_IO_ERROR,
G_IO_ERROR_NOT_FOUND,
_("No such file or directory"));
}
@@ -1598,33 +802,31 @@ do_open_for_read (GVfsBackend *backend,
const char *filename)
{
GVfsBackendFtp *ftp = G_VFS_BACKEND_FTP (backend);
- FtpConnection *conn;
+ GVfsFtpTask task = G_VFS_FTP_TASK_INIT (ftp, G_VFS_JOB (job));
GVfsFtpFile *file;
- static const Ftp550Handler open_read_handlers[] = { error_550_is_directory, NULL };
-
- conn = g_vfs_backend_ftp_pop_connection (ftp, G_VFS_JOB (job));
- if (!conn)
- return;
-
- ftp_connection_ensure_data_connection (conn);
+ static const GVfsFtpErrorFunc open_read_handlers[] = { error_550_is_directory, NULL };
+ g_vfs_ftp_task_open_data_connection (&task);
file = g_vfs_ftp_file_new_from_gvfs (ftp, filename);
- ftp_connection_send_and_check (conn,
- RESPONSE_PASS_100 | RESPONSE_FAIL_200,
+
+ g_vfs_ftp_task_send_and_check (&task,
+ G_VFS_FTP_PASS_100 | G_VFS_FTP_FAIL_200,
&open_read_handlers[0],
file,
+ NULL,
"RETR %s", g_vfs_ftp_file_get_ftp_path (file));
g_vfs_ftp_file_free (file);
- if (ftp_connection_in_error (conn))
- g_vfs_backend_ftp_push_connection (ftp, conn);
- else
+ if (!g_vfs_ftp_task_is_in_error (&task))
{
/* don't push the connection back, it's our handle now */
+ GVfsFtpConnection *conn = g_vfs_ftp_task_take_connection (&task);
+
g_vfs_job_open_for_read_set_handle (job, conn);
g_vfs_job_open_for_read_set_can_seek (job, FALSE);
- ftp_connection_pop_job (conn);
}
+
+ g_vfs_ftp_task_done (&task);
}
static void
@@ -1633,12 +835,14 @@ do_close_read (GVfsBackend * backend,
GVfsBackendHandle handle)
{
GVfsBackendFtp *ftp = G_VFS_BACKEND_FTP (backend);
- FtpConnection *conn = handle;
+ GVfsFtpTask task = G_VFS_FTP_TASK_INIT (ftp, G_VFS_JOB (job));
+ GVfsFtpConnection *conn = handle;
+
+ g_vfs_ftp_task_give_connection (&task, conn);
+ g_vfs_ftp_task_close_data_connection (&task);
+ g_vfs_ftp_task_receive (&task, 0, NULL);
- ftp_connection_push_job (conn, G_VFS_JOB (job));
- ftp_connection_close_data_connection (conn);
- ftp_connection_receive (conn, 0);
- g_vfs_backend_ftp_push_connection (ftp, conn);
+ g_vfs_ftp_task_done (&task);
}
static void
@@ -1648,63 +852,60 @@ do_read (GVfsBackend * backend,
char * buffer,
gsize bytes_requested)
{
- FtpConnection *conn = handle;
+ GVfsBackendFtp *ftp = G_VFS_BACKEND_FTP (backend);
+ GVfsFtpTask task = G_VFS_FTP_TASK_INIT (ftp, G_VFS_JOB (job));
+ GVfsFtpConnection *conn = handle;
gssize n_bytes;
- ftp_connection_push_job (conn, G_VFS_JOB (job));
-
- n_bytes = g_vfs_ftp_connection_read_data (conn->conn,
+ n_bytes = g_vfs_ftp_connection_read_data (conn,
buffer,
bytes_requested,
- conn->job->cancellable,
- &conn->error);
+ task.cancellable,
+ &task.error);
if (n_bytes >= 0)
g_vfs_job_read_set_size (job, n_bytes);
- ftp_connection_pop_job (conn);
+
+ g_vfs_ftp_task_done (&task);
}
static void
-do_start_write (GVfsBackendFtp *ftp,
- FtpConnection *conn,
+do_start_write (GVfsFtpTask *task,
GFileCreateFlags flags,
const char *format,
- ...) G_GNUC_PRINTF (4, 5);
+ ...) G_GNUC_PRINTF (3, 4);
static void
-do_start_write (GVfsBackendFtp *ftp,
- FtpConnection *conn,
+do_start_write (GVfsFtpTask *task,
GFileCreateFlags flags,
const char *format,
...)
{
va_list varargs;
- guint status;
/* FIXME: can we honour the flags? */
- ftp_connection_ensure_data_connection (conn);
+ g_vfs_ftp_task_open_data_connection (task);
va_start (varargs, format);
- status = ftp_connection_sendv (conn,
- RESPONSE_PASS_100 | RESPONSE_FAIL_200,
- format,
- varargs);
+ g_vfs_ftp_task_sendv (task,
+ G_VFS_FTP_PASS_100 | G_VFS_FTP_FAIL_200,
+ NULL,
+ format,
+ varargs);
va_end (varargs);
- if (ftp_connection_in_error (conn))
- g_vfs_backend_ftp_push_connection (ftp, conn);
- else
+ if (!g_vfs_ftp_task_is_in_error (task))
{
/* don't push the connection back, it's our handle now */
- g_vfs_job_open_for_write_set_handle (G_VFS_JOB_OPEN_FOR_WRITE (conn->job), conn);
- g_vfs_job_open_for_write_set_can_seek (G_VFS_JOB_OPEN_FOR_WRITE (conn->job), FALSE);
- ftp_connection_pop_job (conn);
+ GVfsFtpConnection *conn = g_vfs_ftp_task_take_connection (task);
+ g_vfs_job_open_for_write_set_handle (G_VFS_JOB_OPEN_FOR_WRITE (task->job), conn);
+ g_vfs_job_open_for_write_set_can_seek (G_VFS_JOB_OPEN_FOR_WRITE (task->job), FALSE);
}
}
static void
-gvfs_backend_ftp_purge_cache_directory (GVfsBackendFtp *ftp,
- const GVfsFtpFile * dir)
+gvfs_backend_ftp_purge_cache_directory (GVfsBackendFtp * ftp,
+ const GVfsFtpFile *dir)
{
g_static_rw_lock_writer_lock (&ftp->directory_cache_lock);
g_hash_table_remove (ftp->directory_cache, dir);
@@ -1712,9 +913,8 @@ gvfs_backend_ftp_purge_cache_directory (GVfsBackendFtp *ftp,
}
static void
-gvfs_backend_ftp_purge_cache_of_file (GVfsBackendFtp *ftp,
- FtpConnection * conn,
- const GVfsFtpFile * file)
+gvfs_backend_ftp_purge_cache_of_file (GVfsBackendFtp * ftp,
+ const GVfsFtpFile *file)
{
GVfsFtpFile *dir = g_vfs_ftp_file_new_parent (file);
@@ -1726,7 +926,7 @@ gvfs_backend_ftp_purge_cache_of_file (GVfsBackendFtp *ftp,
/* forward declaration */
static GFileInfo *
-create_file_info (GVfsBackendFtp *ftp, FtpConnection *conn, const char *filename, char **symlink);
+create_file_info (GVfsFtpTask *task, const char *filename, char **symlink);
static void
do_create (GVfsBackend *backend,
@@ -1735,32 +935,27 @@ do_create (GVfsBackend *backend,
GFileCreateFlags flags)
{
GVfsBackendFtp *ftp = G_VFS_BACKEND_FTP (backend);
- FtpConnection *conn;
+ GVfsFtpTask task = G_VFS_FTP_TASK_INIT (ftp, G_VFS_JOB (job));
GFileInfo *info;
GVfsFtpFile *file;
- conn = g_vfs_backend_ftp_pop_connection (ftp, G_VFS_JOB (job));
- if (conn == NULL)
- return;
-
- info = create_file_info (ftp, conn, filename, NULL);
+ info = create_file_info (&task, filename, NULL);
if (info)
{
g_object_unref (info);
- g_set_error_literal (&conn->error,
+ g_set_error_literal (&task.error,
G_IO_ERROR,
G_IO_ERROR_EXISTS,
_("Target file already exists"));
- goto error;
+ g_vfs_ftp_task_done (&task);
+ return;
}
file = g_vfs_ftp_file_new_from_gvfs (ftp, filename);
- do_start_write (ftp, conn, flags, "STOR %s", g_vfs_ftp_file_get_ftp_path (file));
- gvfs_backend_ftp_purge_cache_of_file (ftp, conn, file);
+ do_start_write (&task, flags, "STOR %s", g_vfs_ftp_file_get_ftp_path (file));
+ gvfs_backend_ftp_purge_cache_of_file (ftp, file);
g_vfs_ftp_file_free (file);
- return;
-error:
- g_vfs_backend_ftp_push_connection (ftp, conn);
+ g_vfs_ftp_task_done (&task);
}
static void
@@ -1770,18 +965,15 @@ do_append (GVfsBackend *backend,
GFileCreateFlags flags)
{
GVfsBackendFtp *ftp = G_VFS_BACKEND_FTP (backend);
- FtpConnection *conn;
+ GVfsFtpTask task = G_VFS_FTP_TASK_INIT (ftp, G_VFS_JOB (job));
GVfsFtpFile *file;
- conn = g_vfs_backend_ftp_pop_connection (ftp, G_VFS_JOB (job));
- if (conn == NULL)
- return;
-
file = g_vfs_ftp_file_new_from_gvfs (ftp, filename);
- do_start_write (ftp, conn, flags, "APPE %s", g_vfs_ftp_file_get_ftp_path (file));
- gvfs_backend_ftp_purge_cache_of_file (ftp, conn, file);
+ do_start_write (&task, flags, "APPE %s", g_vfs_ftp_file_get_ftp_path (file));
+ gvfs_backend_ftp_purge_cache_of_file (ftp, file);
g_vfs_ftp_file_free (file);
- return;
+
+ g_vfs_ftp_task_done (&task);
}
static void
@@ -1793,28 +985,26 @@ do_replace (GVfsBackend *backend,
GFileCreateFlags flags)
{
GVfsBackendFtp *ftp = G_VFS_BACKEND_FTP (backend);
- FtpConnection *conn;
+ GVfsFtpTask task = G_VFS_FTP_TASK_INIT (ftp, G_VFS_JOB (job));
GVfsFtpFile *file;
if (make_backup)
{
/* FIXME: implement! */
- g_vfs_job_failed (G_VFS_JOB (job),
- G_IO_ERROR,
- G_IO_ERROR_CANT_CREATE_BACKUP,
- _("backups not supported yet"));
+ g_set_error_literal (&task.error,
+ G_IO_ERROR,
+ G_IO_ERROR_CANT_CREATE_BACKUP,
+ _("backups not supported yet"));
+ g_vfs_ftp_task_done (&task);
return;
}
- conn = g_vfs_backend_ftp_pop_connection (ftp, G_VFS_JOB (job));
- if (conn == NULL)
- return;
-
file = g_vfs_ftp_file_new_from_gvfs (ftp, filename);
- do_start_write (ftp, conn, flags, "STOR %s", g_vfs_ftp_file_get_ftp_path (file));
- gvfs_backend_ftp_purge_cache_of_file (ftp, conn, file);
+ do_start_write (&task, flags, "STOR %s", g_vfs_ftp_file_get_ftp_path (file));
+ gvfs_backend_ftp_purge_cache_of_file (ftp, file);
g_vfs_ftp_file_free (file);
- return;
+
+ g_vfs_ftp_task_done (&task);
}
static void
@@ -1823,14 +1013,14 @@ do_close_write (GVfsBackend *backend,
GVfsBackendHandle handle)
{
GVfsBackendFtp *ftp = G_VFS_BACKEND_FTP (backend);
- FtpConnection *conn = handle;
+ GVfsFtpTask task = G_VFS_FTP_TASK_INIT (ftp, G_VFS_JOB (job));
- ftp_connection_push_job (conn, G_VFS_JOB (job));
+ g_vfs_ftp_task_give_connection (&task, handle);
- ftp_connection_close_data_connection (conn);
- ftp_connection_receive (conn, 0);
+ g_vfs_ftp_task_close_data_connection (&task);
+ g_vfs_ftp_task_receive (&task, 0, NULL);
- g_vfs_backend_ftp_push_connection (ftp, conn);
+ g_vfs_ftp_task_done (&task);
}
static void
@@ -1840,21 +1030,22 @@ do_write (GVfsBackend *backend,
char *buffer,
gsize buffer_size)
{
- FtpConnection *conn = handle;
+ GVfsBackendFtp *ftp = G_VFS_BACKEND_FTP (backend);
+ GVfsFtpTask task = G_VFS_FTP_TASK_INIT (ftp, G_VFS_JOB (job));
+ GVfsFtpConnection *conn = handle;
gssize n_bytes;
- ftp_connection_push_job (conn, G_VFS_JOB (job));
-
/* FIXME: use write_all here? */
- n_bytes = g_vfs_ftp_connection_write_data (conn->conn,
+ n_bytes = g_vfs_ftp_connection_write_data (conn,
buffer,
buffer_size,
- G_VFS_JOB (job)->cancellable,
- &conn->error);
+ task.cancellable,
+ &task.error);
if (n_bytes >= 0)
g_vfs_job_write_set_written_size (job, n_bytes);
- ftp_connection_pop_job (conn);
+
+ g_vfs_ftp_task_done (&task);
}
static GFileInfo *
@@ -1884,12 +1075,12 @@ create_file_info_for_root (GVfsBackendFtp *ftp)
}
static FtpDirEntry *
-do_enumerate_directory (FtpConnection *conn)
+do_enumerate_directory (GVfsFtpTask *task)
{
gssize n_bytes;
FtpDirEntry *entry;
- if (ftp_connection_in_error (conn))
+ if (g_vfs_ftp_task_is_in_error (task))
return NULL;
entry = ftp_dir_entry_new ();
@@ -1901,16 +1092,16 @@ do_enumerate_directory (FtpConnection *conn)
entry = ftp_dir_entry_grow (entry);
if (entry == NULL)
{
- g_set_error_literal (&conn->error, G_IO_ERROR, G_IO_ERROR_FAILED,
+ g_set_error_literal (&task->error, G_IO_ERROR, G_IO_ERROR_FAILED,
_("Out of memory while reading directory contents"));
return NULL;
}
}
- n_bytes = g_vfs_ftp_connection_read_data (conn->conn,
+ n_bytes = g_vfs_ftp_connection_read_data (task->conn,
entry->data + entry->length,
entry->size - entry->length - 1,
- conn->job->cancellable,
- &conn->error);
+ task->cancellable,
+ &task->error);
if (n_bytes < 0)
{
@@ -1922,9 +1113,9 @@ do_enumerate_directory (FtpConnection *conn)
}
while (n_bytes > 0);
- ftp_connection_close_data_connection (conn);
- ftp_connection_receive (conn, 0);
- if (ftp_connection_in_error (conn))
+ g_vfs_ftp_task_close_data_connection (task);
+ g_vfs_ftp_task_receive (task, 0, NULL);
+ if (g_vfs_ftp_task_is_in_error (task))
{
ftp_dir_entry_free (entry);
return NULL;
@@ -1938,11 +1129,11 @@ do_enumerate_directory (FtpConnection *conn)
/* IMPORTANT: SUCK ALARM!
* locks ftp->directory_cache_lock but only iff it returns !NULL */
static const FtpDirEntry *
-enumerate_directory (GVfsBackendFtp *ftp,
- FtpConnection * conn,
- const GVfsFtpFile * dir,
- gboolean use_cache)
+enumerate_directory (GVfsFtpTask * task,
+ const GVfsFtpFile *dir,
+ gboolean use_cache)
{
+ GVfsBackendFtp *ftp = task->backend;
FtpDirEntry *entry;
g_static_rw_lock_reader_lock (&ftp->directory_cache_lock);
@@ -1957,8 +1148,8 @@ enumerate_directory (GVfsBackendFtp *ftp,
if (entry == NULL)
{
g_static_rw_lock_reader_unlock (&ftp->directory_cache_lock);
- ftp->dir_ops->init_data (conn, dir);
- entry = do_enumerate_directory (conn);
+ ftp->dir_ops->init_data (task, dir);
+ entry = do_enumerate_directory (task);
if (entry == NULL)
return NULL;
g_static_rw_lock_writer_lock (&ftp->directory_cache_lock);
@@ -1973,44 +1164,47 @@ enumerate_directory (GVfsBackendFtp *ftp,
}
static GFileInfo *
-create_file_info_from_parent (GVfsBackendFtp *ftp, FtpConnection *conn,
- const GVfsFtpFile *dir, const GVfsFtpFile *file, char **symlink)
+create_file_info_from_parent (GVfsFtpTask * task,
+ const GVfsFtpFile *dir,
+ const GVfsFtpFile *file,
+ char ** symlink)
{
GFileInfo *info = NULL;
gpointer iter;
const FtpDirEntry *entry;
const char *sol, *eol;
- entry = enumerate_directory (ftp, conn, dir, TRUE);
+ entry = enumerate_directory (task, dir, TRUE);
if (entry == NULL)
return NULL;
- iter = ftp->dir_ops->iter_new (conn);
+ iter = task->backend->dir_ops->iter_new (task);
for (sol = eol = entry->data; eol; sol = eol + 1)
{
eol = memchr (sol, '\n', entry->length - (sol - entry->data));
- info = ftp->dir_ops->iter_process (iter,
- conn,
- dir,
- file,
- sol,
- symlink);
+ info = task->backend->dir_ops->iter_process (iter,
+ task,
+ dir,
+ file,
+ sol,
+ symlink);
if (info)
break;
}
- ftp->dir_ops->iter_free (iter);
- g_static_rw_lock_reader_unlock (&ftp->directory_cache_lock);
+ task->backend->dir_ops->iter_free (iter);
+ g_static_rw_lock_reader_unlock (&task->backend->directory_cache_lock);
return info;
}
static GFileInfo *
-create_file_info_from_file (GVfsBackendFtp *ftp, FtpConnection *conn,
- const GVfsFtpFile *file, const char *filename, char **symlink)
+create_file_info_from_file (GVfsFtpTask *task, const GVfsFtpFile *file,
+ const char *filename, char **symlink)
{
GFileInfo *info;
+ char **reply;
- if (ftp_connection_try_cd (conn, file))
+ if (g_vfs_ftp_task_try_cd (task, file))
{
char *tmp;
@@ -2024,7 +1218,7 @@ create_file_info_from_file (GVfsBackendFtp *ftp, FtpConnection *conn,
g_file_info_set_is_hidden (info, TRUE);
}
- else if (ftp_connection_send (conn, 0, "SIZE %s", g_vfs_ftp_file_get_ftp_path (file)))
+ else if (g_vfs_ftp_task_send_and_check (task, 0, NULL, NULL, &reply, "SIZE %s", g_vfs_ftp_file_get_ftp_path (file)))
{
char *tmp;
@@ -2036,7 +1230,8 @@ create_file_info_from_file (GVfsBackendFtp *ftp, FtpConnection *conn,
gvfs_file_info_populate_default (info, filename, G_FILE_TYPE_REGULAR);
- g_file_info_set_size (info, g_ascii_strtoull (conn->read_buffer[0] + 4, NULL, 0));
+ g_file_info_set_size (info, g_ascii_strtoull (reply[0] + 4, NULL, 0));
+ g_strfreev (reply);
g_file_info_set_is_hidden (info, TRUE);
}
@@ -2044,7 +1239,7 @@ create_file_info_from_file (GVfsBackendFtp *ftp, FtpConnection *conn,
{
info = NULL;
/* clear error from ftp_connection_send() in else if line above */
- ftp_connection_clear_error (conn);
+ g_vfs_ftp_task_clear_error (task);
/* note that there might still be a file/directory, we just have
* no way to figure this out (in particular on ftp servers that
@@ -2058,7 +1253,7 @@ create_file_info_from_file (GVfsBackendFtp *ftp, FtpConnection *conn,
/* NB: This gets a file info for the given object, no matter if it's a dir
* or a file */
static GFileInfo *
-create_file_info (GVfsBackendFtp *ftp, FtpConnection *conn, const char *filename, char **symlink)
+create_file_info (GVfsFtpTask *task, const char *filename, char **symlink)
{
GVfsFtpFile *dir, *file;
GFileInfo *info;
@@ -2067,14 +1262,14 @@ create_file_info (GVfsBackendFtp *ftp, FtpConnection *conn, const char *filename
*symlink = NULL;
if (g_str_equal (filename, "/"))
- return create_file_info_for_root (ftp);
+ return create_file_info_for_root (task->backend);
- file = g_vfs_ftp_file_new_from_gvfs (ftp, filename);
+ file = g_vfs_ftp_file_new_from_gvfs (task->backend, filename);
dir = g_vfs_ftp_file_new_parent (file);
- info = create_file_info_from_parent (ftp, conn, dir, file, symlink);
+ info = create_file_info_from_parent (task, dir, file, symlink);
if (info == NULL)
- info = create_file_info_from_file (ftp, conn, file, filename, symlink);
+ info = create_file_info_from_file (task, file, filename, symlink);
g_vfs_ftp_file_free (dir);
g_vfs_ftp_file_free (file);
@@ -2082,7 +1277,7 @@ create_file_info (GVfsBackendFtp *ftp, FtpConnection *conn, const char *filename
}
static GFileInfo *
-resolve_symlink (GVfsBackendFtp *ftp, FtpConnection *conn, GFileInfo *original, const char *filename)
+resolve_symlink (GVfsFtpTask *task, GFileInfo *original, const char *filename)
{
GFileInfo *info = NULL;
char *symlink, *newlink;
@@ -2097,7 +1292,7 @@ resolve_symlink (GVfsBackendFtp *ftp, FtpConnection *conn, GFileInfo *original,
G_FILE_ATTRIBUTE_STANDARD_SYMLINK_TARGET
};
- if (ftp_connection_in_error (conn))
+ if (g_vfs_ftp_task_is_in_error (task))
return original;
/* How many symlinks should we follow?
@@ -2106,8 +1301,7 @@ resolve_symlink (GVfsBackendFtp *ftp, FtpConnection *conn, GFileInfo *original,
symlink = g_strdup (filename);
for (i = 0; i < 8 && symlink; i++)
{
- info = create_file_info (ftp,
- conn,
+ info = create_file_info (task,
symlink,
&newlink);
if (!newlink)
@@ -2118,10 +1312,10 @@ resolve_symlink (GVfsBackendFtp *ftp, FtpConnection *conn, GFileInfo *original,
}
g_free (symlink);
- if (ftp_connection_in_error (conn))
+ if (g_vfs_ftp_task_is_in_error (task))
{
g_assert (info == NULL);
- ftp_connection_clear_error (conn);
+ g_vfs_ftp_task_clear_error (task);
return original;
}
if (info == NULL)
@@ -2158,30 +1352,24 @@ do_query_info (GVfsBackend *backend,
GFileAttributeMatcher *matcher)
{
GVfsBackendFtp *ftp = G_VFS_BACKEND_FTP (backend);
- FtpConnection *conn;
+ GVfsFtpTask task = G_VFS_FTP_TASK_INIT (ftp, G_VFS_JOB (job));
GFileInfo *real;
char *symlink;
- conn = g_vfs_backend_ftp_pop_connection (ftp, G_VFS_JOB (job));
- if (conn == NULL)
- return;
-
if (query_flags & G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS)
{
- real = create_file_info (ftp,
- conn,
+ real = create_file_info (&task,
filename,
NULL);
}
else
{
- real = create_file_info (ftp,
- conn,
+ real = create_file_info (&task,
filename,
&symlink);
if (symlink)
{
- real = resolve_symlink (ftp, conn, real, symlink);
+ real = resolve_symlink (&task, real, symlink);
g_free (symlink);
}
}
@@ -2191,13 +1379,15 @@ do_query_info (GVfsBackend *backend,
g_file_info_copy_into (real, info);
g_object_unref (real);
}
- else if (!ftp_connection_in_error (conn))
- g_set_error_literal (&conn->error,
- G_IO_ERROR,
- G_IO_ERROR_NOT_FOUND,
- _("File doesn't exist"));
+ else if (!g_vfs_ftp_task_is_in_error (&task))
+ {
+ g_set_error_literal (&task.error,
+ G_IO_ERROR,
+ G_IO_ERROR_NOT_FOUND,
+ _("File doesn't exist"));
+ }
- g_vfs_backend_ftp_push_connection (ftp, conn);
+ g_vfs_ftp_task_done (&task);
}
static void
@@ -2208,7 +1398,7 @@ do_enumerate (GVfsBackend *backend,
GFileQueryInfoFlags query_flags)
{
GVfsBackendFtp *ftp = G_VFS_BACKEND_FTP (backend);
- FtpConnection *conn;
+ GVfsFtpTask task = G_VFS_FTP_TASK_INIT (ftp, G_VFS_JOB (job));
GVfsFtpFile *dir;
gpointer iter;
GSList *symlink_targets = NULL;
@@ -2218,69 +1408,60 @@ do_enumerate (GVfsBackend *backend,
const FtpDirEntry *entry;
const char *sol, *eol;
- conn = g_vfs_backend_ftp_pop_connection (ftp, G_VFS_JOB (job));
- if (conn == NULL)
- return;
-
/* no need to check for IS_DIR, because the enumeration code will return that
* automatically.
*/
dir = g_vfs_ftp_file_new_from_gvfs (ftp, dirname);
- entry = enumerate_directory (ftp, conn, dir, FALSE);
- if (ftp_connection_pop_job (conn))
+ entry = enumerate_directory (&task, dir, FALSE);
+ if (entry != NULL)
{
- ftp_connection_push_job (conn, G_VFS_JOB (job));
- if (entry != NULL)
- {
- iter = ftp->dir_ops->iter_new (conn);
- for (sol = eol = entry->data; eol; sol = eol + 1)
+ g_vfs_job_succeeded (task.job);
+ task.job = NULL;
+
+ iter = ftp->dir_ops->iter_new (&task);
+ for (sol = eol = entry->data; eol; sol = eol + 1)
+ {
+ char *symlink = NULL;
+
+ eol = memchr (sol, '\n', entry->length - (sol - entry->data));
+ info = ftp->dir_ops->iter_process (iter,
+ &task,
+ dir,
+ NULL,
+ sol,
+ query_flags & G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS ? NULL : &symlink);
+ if (symlink)
{
- char *symlink = NULL;
-
- eol = memchr (sol, '\n', entry->length - (sol - entry->data));
- info = ftp->dir_ops->iter_process (iter,
- conn,
- dir,
- NULL,
- sol,
- query_flags & G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS ? NULL : &symlink);
- if (symlink)
- {
- /* This is necessary due to our locking.
- * And we must not unlock here because it might invalidate the list we iterate */
- symlink_targets = g_slist_prepend (symlink_targets, symlink);
- symlink_fileinfos = g_slist_prepend (symlink_fileinfos, info);
- }
- else if (info)
- {
- g_vfs_job_enumerate_add_info (job, info);
- g_object_unref (info);
- }
- }
- ftp->dir_ops->iter_free (iter);
- g_static_rw_lock_reader_unlock (&ftp->directory_cache_lock);
- for (twalk = symlink_targets, fwalk = symlink_fileinfos; twalk;
- twalk = twalk->next, fwalk = fwalk->next)
- {
- info = resolve_symlink (ftp, conn, fwalk->data, twalk->data);
- g_free (twalk->data);
- g_vfs_job_enumerate_add_info (job, info);
- g_object_unref (info);
- }
- g_slist_free (symlink_targets);
- g_slist_free (symlink_fileinfos);
- }
-
+ /* This is necessary due to our locking.
+ * And we must not unlock here because it might invalidate the list we iterate */
+ symlink_targets = g_slist_prepend (symlink_targets, symlink);
+ symlink_fileinfos = g_slist_prepend (symlink_fileinfos, info);
+ }
+ else if (info)
+ {
+ g_vfs_job_enumerate_add_info (job, info);
+ g_object_unref (info);
+ }
+ }
+ ftp->dir_ops->iter_free (iter);
+ g_static_rw_lock_reader_unlock (&ftp->directory_cache_lock);
+ for (twalk = symlink_targets, fwalk = symlink_fileinfos; twalk;
+ twalk = twalk->next, fwalk = fwalk->next)
+ {
+ info = resolve_symlink (&task, fwalk->data, twalk->data);
+ g_free (twalk->data);
+ g_vfs_job_enumerate_add_info (job, info);
+ g_object_unref (info);
+ }
+ g_slist_free (symlink_targets);
+ g_slist_free (symlink_fileinfos);
+
g_vfs_job_enumerate_done (job);
- conn->job = NULL;
- ftp_connection_clear_error (conn);
}
- else
- g_assert (entry == NULL);
-
- g_vfs_backend_ftp_push_connection (ftp, conn);
+
g_vfs_ftp_file_free (dir);
+ g_vfs_ftp_task_done (&task);
}
static void
@@ -2290,30 +1471,27 @@ do_set_display_name (GVfsBackend *backend,
const char *display_name)
{
GVfsBackendFtp *ftp = G_VFS_BACKEND_FTP (backend);
- FtpConnection *conn;
+ GVfsFtpTask task = G_VFS_FTP_TASK_INIT (ftp, G_VFS_JOB (job));
GVfsFtpFile *original, *dir, *now;
- conn = g_vfs_backend_ftp_pop_connection (ftp, G_VFS_JOB (job));
- if (conn == NULL)
- return;
-
original = g_vfs_ftp_file_new_from_gvfs (ftp, filename);
dir = g_vfs_ftp_file_new_parent (original);
- now = g_vfs_ftp_file_new_child (dir, display_name, &conn->error);
- ftp_connection_send (conn,
- RESPONSE_PASS_300 | RESPONSE_FAIL_200,
+ now = g_vfs_ftp_file_new_child (dir, display_name, &task.error);
+ g_vfs_ftp_task_send (&task,
+ G_VFS_FTP_PASS_300 | G_VFS_FTP_FAIL_200,
"RNFR %s", g_vfs_ftp_file_get_ftp_path (original));
- ftp_connection_send (conn,
+ g_vfs_ftp_task_send (&task,
0,
"RNTO %s", g_vfs_ftp_file_get_ftp_path (now));
/* FIXME: parse result of RNTO here? */
g_vfs_job_set_display_name_set_new_path (job, g_vfs_ftp_file_get_gvfs_path (now));
gvfs_backend_ftp_purge_cache_directory (ftp, dir);
- g_vfs_backend_ftp_push_connection (ftp, conn);
g_vfs_ftp_file_free (now);
g_vfs_ftp_file_free (dir);
g_vfs_ftp_file_free (original);
+
+ g_vfs_ftp_task_done (&task);
}
static void
@@ -2322,51 +1500,44 @@ do_delete (GVfsBackend *backend,
const char *filename)
{
GVfsBackendFtp *ftp = G_VFS_BACKEND_FTP (backend);
- FtpConnection *conn;
+ GVfsFtpTask task = G_VFS_FTP_TASK_INIT (ftp, G_VFS_JOB (job));
GVfsFtpFile *file;
guint response;
- conn = g_vfs_backend_ftp_pop_connection (ftp, G_VFS_JOB (job));
- if (conn == NULL)
- return;
-
/* We try file deletion first. If that fails, we try directory deletion.
* The file-first-then-directory order has been decided by coin-toss. */
file = g_vfs_ftp_file_new_from_gvfs (ftp, filename);
- response = ftp_connection_send (conn,
- RESPONSE_PASS_500,
+ response = g_vfs_ftp_task_send (&task,
+ G_VFS_FTP_PASS_500,
"DELE %s", g_vfs_ftp_file_get_ftp_path (file));
- if (STATUS_GROUP (response) == 5)
+ if (G_VFS_FTP_RESPONSE_GROUP (response) == 5)
{
- response = ftp_connection_send (conn,
- RESPONSE_PASS_500,
+ response = g_vfs_ftp_task_send (&task,
+ G_VFS_FTP_PASS_550,
"RMD %s", g_vfs_ftp_file_get_ftp_path (file));
if (response == 550)
{
- const FtpDirEntry *entry = enumerate_directory (ftp, conn, file, FALSE);
+ const FtpDirEntry *entry = enumerate_directory (&task, file, FALSE);
if (entry)
{
g_static_rw_lock_reader_unlock (&ftp->directory_cache_lock);
- g_set_error_literal (&conn->error,
+ g_set_error_literal (&task.error,
G_IO_ERROR,
G_IO_ERROR_NOT_EMPTY,
g_strerror (ENOTEMPTY));
}
else
{
- ftp_connection_clear_error (conn);
- ftp_connection_set_error_from_response (conn, response);
+ g_vfs_ftp_task_clear_error (&task);
+ g_vfs_ftp_task_set_error_from_response (&task, response);
}
}
- else if (STATUS_GROUP (response) == 5)
- {
- ftp_connection_set_error_from_response (conn, response);
- }
}
- gvfs_backend_ftp_purge_cache_of_file (ftp, conn, file);
+ gvfs_backend_ftp_purge_cache_of_file (ftp, file);
g_vfs_ftp_file_free (file);
- g_vfs_backend_ftp_push_connection (ftp, conn);
+
+ g_vfs_ftp_task_done (&task);
}
static void
@@ -2375,27 +1546,24 @@ do_make_directory (GVfsBackend *backend,
const char *filename)
{
GVfsBackendFtp *ftp = G_VFS_BACKEND_FTP (backend);
- FtpConnection *conn;
+ GVfsFtpTask task = G_VFS_FTP_TASK_INIT (ftp, G_VFS_JOB (job));
GVfsFtpFile *file;
- static const Ftp550Handler make_directory_handlers[] = { error_550_exists, error_550_parent_not_found, NULL };
-
- conn = g_vfs_backend_ftp_pop_connection (ftp, G_VFS_JOB (job));
- if (conn == NULL)
- return;
+ static const GVfsFtpErrorFunc make_directory_handlers[] = { error_550_exists, error_550_parent_not_found, NULL };
file = g_vfs_ftp_file_new_from_gvfs (ftp, filename);
- ftp_connection_send_and_check (conn,
+ g_vfs_ftp_task_send_and_check (&task,
0,
make_directory_handlers,
file,
+ NULL,
"MKD %s", g_vfs_ftp_file_get_ftp_path (file));
/* FIXME: Compare created file with name from server result to be sure
* it's correct and otherwise fail. */
- gvfs_backend_ftp_purge_cache_of_file (ftp, conn, file);
+ gvfs_backend_ftp_purge_cache_of_file (ftp, file);
g_vfs_ftp_file_free (file);
- g_vfs_backend_ftp_push_connection (ftp, conn);
+ g_vfs_ftp_task_done (&task);
}
static void
@@ -2408,35 +1576,34 @@ do_move (GVfsBackend *backend,
gpointer progress_callback_data)
{
GVfsBackendFtp *ftp = G_VFS_BACKEND_FTP (backend);
- FtpConnection *conn;
+ GVfsFtpTask task = G_VFS_FTP_TASK_INIT (ftp, G_VFS_JOB (job));
GVfsFtpFile *srcfile, *destfile;
/* FIXME: what about G_FILE_COPY_NOFOLLOW_SYMLINKS and G_FILE_COPY_ALL_METADATA? */
if (flags & G_FILE_COPY_BACKUP)
{
- /* FIXME: implement! */
- g_vfs_job_failed (G_VFS_JOB (job),
- G_IO_ERROR,
- G_IO_ERROR_CANT_CREATE_BACKUP,
- _("backups not supported yet"));
+ /* FIXME: implement? */
+ g_set_error_literal (&task.error,
+ G_IO_ERROR,
+ G_IO_ERROR_CANT_CREATE_BACKUP,
+ _("backups not supported yet"));
+ g_vfs_ftp_task_done (&task);
return;
}
- conn = g_vfs_backend_ftp_pop_connection (ftp, G_VFS_JOB (job));
- if (conn == NULL)
- return;
-
srcfile = g_vfs_ftp_file_new_from_gvfs (ftp, source);
destfile = g_vfs_ftp_file_new_from_gvfs (ftp, destination);
- if (ftp_connection_try_cd (conn, destfile))
+ if (g_vfs_ftp_task_try_cd (&task, destfile))
{
char *basename = g_path_get_basename (source);
- GVfsFtpFile *real = g_vfs_ftp_file_new_child (destfile, basename, &conn->error);
+ GVfsFtpFile *real = g_vfs_ftp_file_new_child (destfile, basename, &task.error);
g_free (basename);
if (real == NULL)
- goto out;
+ {
+ goto out;
+ }
else
{
g_vfs_ftp_file_free (destfile);
@@ -2446,15 +1613,14 @@ do_move (GVfsBackend *backend,
if (!(flags & G_FILE_COPY_OVERWRITE))
{
- GFileInfo *info = create_file_info (ftp,
- conn,
+ GFileInfo *info = create_file_info (&task,
g_vfs_ftp_file_get_gvfs_path (destfile),
NULL);
if (info)
{
g_object_unref (info);
- g_set_error_literal (&conn->error,
+ g_set_error_literal (&task.error,
G_IO_ERROR,
G_IO_ERROR_EXISTS,
_("Target file already exists"));
@@ -2462,19 +1628,20 @@ do_move (GVfsBackend *backend,
}
}
- ftp_connection_send (conn,
- RESPONSE_PASS_300 | RESPONSE_FAIL_200,
+ g_vfs_ftp_task_send (&task,
+ G_VFS_FTP_PASS_300 | G_VFS_FTP_FAIL_200,
"RNFR %s", g_vfs_ftp_file_get_ftp_path (srcfile));
- ftp_connection_send (conn,
+ g_vfs_ftp_task_send (&task,
0,
"RNTO %s", g_vfs_ftp_file_get_ftp_path (destfile));
- gvfs_backend_ftp_purge_cache_of_file (ftp, conn, srcfile);
- gvfs_backend_ftp_purge_cache_of_file (ftp, conn, destfile);
+ gvfs_backend_ftp_purge_cache_of_file (ftp, srcfile);
+ gvfs_backend_ftp_purge_cache_of_file (ftp, destfile);
out:
g_vfs_ftp_file_free (srcfile);
g_vfs_ftp_file_free (destfile);
- g_vfs_backend_ftp_push_connection (ftp, conn);
+
+ g_vfs_ftp_task_done (&task);
}
static void
@@ -2503,3 +1670,71 @@ g_vfs_backend_ftp_class_init (GVfsBackendFtpClass *klass)
backend_class->make_directory = do_make_directory;
backend_class->move = do_move;
}
+
+/*** PUBLIC API ***/
+
+/**
+ * g_vfs_backend_ftp_has_feature:
+ * @ftp: the backend
+ * @feature: feature to check
+ *
+ * Checks if the FTP server supports a given @feature. Features are determined
+ * once during the mount phase and are not queried again.
+ *
+ * Returns: %TRUE if @feature is supported.
+ **/
+gboolean
+g_vfs_backend_ftp_has_feature (GVfsBackendFtp *ftp,
+ GVfsFtpFeature feature)
+{
+ g_return_val_if_fail (G_VFS_IS_BACKEND_FTP (ftp), FALSE);
+ g_return_val_if_fail (feature < 32, FALSE);
+
+ return (ftp->features & (1 << feature)) != 0;
+}
+
+/**
+ * g_vfs_backend_ftp_uses_workaround:
+ * @ftp: the backend
+ * @workaround: workaround to check
+ *
+ * Checks if the given @workaround was enabled previously using
+ * g_vfs_backend_ftp_use_workaround(). See that function for a discussion
+ * of the purpose of workarounds.
+ *
+ * Returns: %TRUE if the workaround is enabled
+ **/
+gboolean
+g_vfs_backend_ftp_uses_workaround (GVfsBackendFtp * ftp,
+ GVfsFtpWorkaround workaround)
+{
+ g_return_val_if_fail (G_VFS_IS_BACKEND_FTP (ftp), FALSE);
+ g_return_val_if_fail (workaround < 32, FALSE);
+
+ return (g_atomic_int_get (&ftp->workarounds) & (1 << workaround)) != 0;
+}
+
+/**
+ * g_vfs_backend_ftp_use_workaround:
+ * @ftp: the backend
+ * @workaround: workaround to set
+ *
+ * Sets the given @workaround to be used on the backend. Workarounds are flags
+ * set on the backend to ensure a special behavior in the client to work
+ * around problems with servers. See the existing workarounds for examples.
+ **/
+void
+g_vfs_backend_ftp_use_workaround (GVfsBackendFtp * ftp,
+ GVfsFtpWorkaround workaround)
+{
+ int cur, set;
+
+ g_return_if_fail (G_VFS_IS_BACKEND_FTP (ftp));
+ g_return_if_fail (workaround < 32);
+
+ set = 1 << workaround;
+ while (((cur = g_atomic_int_get (&ftp->workarounds)) & set) == 0 &&
+ !g_atomic_int_compare_and_exchange (&ftp->workarounds, cur, cur | set));
+
+}
+
diff --git a/daemon/gvfsbackendftp.h b/daemon/gvfsbackendftp.h
index 23538342..e1df8b0b 100644
--- a/daemon/gvfsbackendftp.h
+++ b/daemon/gvfsbackendftp.h
@@ -28,6 +28,38 @@
G_BEGIN_DECLS
+#define G_VFS_FTP_TIMEOUT_IN_SECONDS 30
+
+typedef enum {
+ G_VFS_FTP_FEATURE_MDTM,
+ G_VFS_FTP_FEATURE_SIZE,
+ G_VFS_FTP_FEATURE_TVFS,
+ G_VFS_FTP_FEATURE_EPSV,
+ G_VFS_FTP_FEATURE_UTF8
+} GVfsFtpFeature;
+#define G_VFS_FTP_FEATURES_DEFAULT (1 << G_VFS_FTP_FEATURE_EPSV)
+
+typedef enum {
+ G_VFS_FTP_SYSTEM_UNKNOWN = 0,
+ G_VFS_FTP_SYSTEM_UNIX,
+ G_VFS_FTP_SYSTEM_WINDOWS
+} GVfsFtpSystem;
+
+typedef enum {
+ /* Server advertises support for EPSV (or we assume that it supports it),
+ * but it does fail to do so, we set this flag so we can fall back to
+ * PASV. */
+ G_VFS_FTP_WORKAROUND_BROKEN_EPSV,
+ /* Server replies with a wrong address in PASV, we use connection IP
+ * instead */
+ G_VFS_FTP_WORKAROUND_PASV_ADDR,
+ /* server does not allow querying features before login, so we try after
+ * logging in instead. */
+ G_VFS_FTP_WORKAROUND_FEAT_AFTER_LOGIN,
+} GVfsFtpWorkaround;
+
+typedef struct FtpDirReader FtpDirReader;
+
#define G_VFS_TYPE_BACKEND_FTP (g_vfs_backend_ftp_get_type ())
#define G_VFS_BACKEND_FTP(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), G_VFS_TYPE_BACKEND_FTP, GVfsBackendFtp))
#define G_VFS_BACKEND_FTP_CLASS(k) (G_TYPE_CHECK_CLASS_CAST((k), G_VFS_TYPE_BACKEND_FTP, GVfsBackendFtpClass))
@@ -38,6 +70,36 @@ G_BEGIN_DECLS
typedef struct _GVfsBackendFtp GVfsBackendFtp;
typedef struct _GVfsBackendFtpClass GVfsBackendFtpClass;
+struct _GVfsBackendFtp
+{
+ GVfsBackend backend;
+
+ GSocketConnectable * addr;
+ GSocketClient * connection_factory;
+ char * user;
+ gboolean has_initial_user;
+ char * password; /* password or NULL for anonymous */
+ char * host_display_name;
+
+ GVfsFtpSystem system; /* the system from the SYST response */
+ int features; /* GVfsFtpFeatures that are supported */
+ int workarounds; /* GVfsFtpWorkarounds in use - int because it's atomic */
+
+ /* vfuncs */
+ const FtpDirReader * dir_ops;
+
+ /* connection collection - accessed from gvfsftptask.c */
+ GMutex * mutex; /* mutex protecting the following variables */
+ GCond * cond; /* cond used to signal tasks waiting on the mutex */
+ GQueue * queue; /* queue containing the connections */
+ guint connections; /* current number of connections */
+ guint max_connections; /* upper server limit for number of connections - dynamically generated */
+
+ /* caching results from dir queries */
+ GStaticRWLock directory_cache_lock;
+ GHashTable * directory_cache;
+};
+
struct _GVfsBackendFtpClass
{
GVfsBackendClass parent_class;
@@ -45,6 +107,14 @@ struct _GVfsBackendFtpClass
GType g_vfs_backend_ftp_get_type (void) G_GNUC_CONST;
+gboolean g_vfs_backend_ftp_has_feature (GVfsBackendFtp * ftp,
+ GVfsFtpFeature feature);
+gboolean g_vfs_backend_ftp_uses_workaround (GVfsBackendFtp * ftp,
+ GVfsFtpWorkaround workaround);
+void g_vfs_backend_ftp_use_workaround (GVfsBackendFtp * ftp,
+ GVfsFtpWorkaround workaround);
+
+
G_END_DECLS
#endif /* __G_VFS_BACKEND_FTP_H__ */
diff --git a/daemon/gvfsftpconnection.c b/daemon/gvfsftpconnection.c
index 7a28fb89..485ad68d 100644
--- a/daemon/gvfsftpconnection.c
+++ b/daemon/gvfsftpconnection.c
@@ -275,3 +275,30 @@ g_vfs_ftp_connection_read_contents (GVfsFtpConnection *conn,
g_assert_not_reached ();
}
+/**
+ * g_vfs_ftp_connection_is_usable:
+ * @conn: a connection
+ *
+ * Checks if this connection can still be used to send new commands. For
+ * example, if the connection was closed, this is not possible and this
+ * function will return %FALSE.
+ *
+ * Returns: %TRUE if the connection is still usable
+ **/
+gboolean
+g_vfs_ftp_connection_is_usable (GVfsFtpConnection *conn)
+{
+ GIOCondition cond;
+
+ g_return_val_if_fail (conn != NULL, FALSE);
+
+ /* FIXME: return FALSE here if a send or receive failed irrecoverably */
+
+ cond = G_IO_ERR | G_IO_HUP;
+ cond = g_socket_condition_check (g_socket_connection_get_socket (G_SOCKET_CONNECTION (conn->commands)), cond);
+ if (cond)
+ return FALSE;
+
+ return TRUE;
+}
+
diff --git a/daemon/gvfsftpconnection.h b/daemon/gvfsftpconnection.h
index 4e9e7ecc..234f4e4d 100644
--- a/daemon/gvfsftpconnection.h
+++ b/daemon/gvfsftpconnection.h
@@ -53,6 +53,7 @@ guint g_vfs_ftp_connection_receive (GVfsFtpConnection
GCancellable * cancellable,
GError ** error);
+gboolean g_vfs_ftp_connection_is_usable (GVfsFtpConnection * conn);
GSocketAddress * g_vfs_ftp_connection_get_address (GVfsFtpConnection * conn,
GError ** error);
diff --git a/daemon/gvfsftptask.c b/daemon/gvfsftptask.c
new file mode 100644
index 00000000..af889fe0
--- /dev/null
+++ b/daemon/gvfsftptask.c
@@ -0,0 +1,888 @@
+/* GIO - GLib Input, Output and Streaming Library
+ *
+ * Copyright (C) 2009 Benjamin Otte <otte@gnome.org>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General
+ * Public License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
+ * Boston, MA 02111-1307, USA.
+ *
+ * Author: Benjamin Otte <otte@gnome.org>
+ */
+
+#include <config.h>
+
+#include <stdio.h> /* for sscanf() */
+#include <stdlib.h> /* for exit() */
+
+#include <glib/gi18n.h>
+
+#include "gvfsftptask.h"
+
+/*** DOCS ***/
+
+/**
+ * GVfsFtpResponseFlags:
+ * @G_VFS_FTP_PASS_100: Don't treat 1XX responses, but return them
+ * @G_VFS_FTP_PASS_300: Don't treat 3XX responses, but return them
+ * @G_VFS_FTP_PASS_400: Don't treat 4XX responses, but return them
+ * @G_VFS_FTP_PASS_500: Don't treat 5XX responses, but return them
+ * @G_VFS_FTP_PASS_550: Don't treat 550 responses, but return them
+ * @G_VFS_FTP_FAIL_200: Fail on a 2XX response
+ *
+ * These flags can be passed to gvfs_ftp_task_receive() (and in
+ * turn gvfs_ftp_task_send()) to influence the behavior of the functions.
+ */
+
+/**
+ * G_VFS_FTP_G_VFS_FTP_GROUP:
+ * @response: a valid ftp response
+ *
+ * Determines the group the given @response belongs to. The group is the first
+ * digit of the reply.
+ *
+ * Returns: The group the response code belonged to from 1-5
+ */
+
+/**
+ * G_VFS_FTP_TASK_INIT:
+ * @backend: the backend used by this task
+ * @job: the job that initiated the task or %NULL if none
+ *
+ * Initializes a new task structure for the given backend and job.
+ */
+
+/**
+ * GVfsFtpErrorFunc:
+ * @task: task to handle
+ * @data: data argument provided to g_vfs_ftp_task_send_and_check()
+ *
+ * Function prototype for error checking functions used by
+ * g_vfs_ftp_task_send_and_check(). When called, these functions are supposed
+ * to check a specific error condition and if met, set an error on the passed
+ * @task.
+ */
+
+/*** CODE ***/
+
+gboolean
+g_vfs_ftp_task_login (GVfsFtpTask *task,
+ const char * username,
+ const char * password)
+{
+ guint status;
+
+ g_return_val_if_fail (task != NULL, FALSE);
+ g_return_val_if_fail (username != NULL, FALSE);
+ g_return_val_if_fail (password != NULL, FALSE);
+
+ if (g_vfs_ftp_task_is_in_error (task))
+ return FALSE;
+
+ status = g_vfs_ftp_task_send (task, G_VFS_FTP_PASS_300,
+ "USER %s", username);
+
+ if (G_VFS_FTP_RESPONSE_GROUP (status) == 3)
+ {
+ /* rationale for choosing the default password:
+ * - some ftp servers expect something that looks like an email address
+ * - we don't want to send the user's name or address, as that would be
+ * a privacy problem
+ * - we want to give ftp server administrators a chance to notify us of
+ * problems with our client.
+ * - we don't want to drown in spam.
+ */
+ if (password == NULL || password[0] == 0)
+ password = "gvfsd-ftp-" VERSION "@example.com";
+ status = g_vfs_ftp_task_send (task, 0,
+ "PASS %s", password);
+ }
+
+ return status;
+}
+
+/**
+ * g_vfs_ftp_task_setup_connection:
+ * @task: the task
+ *
+ * Sends all commands necessary to put the connection into a usable state,
+ * like setting the transfer mode to binary. Note that passive mode will
+ * will be set on a case-by-case basis when opening a data connection.
+ **/
+void
+g_vfs_ftp_task_setup_connection (GVfsFtpTask *task)
+{
+ g_return_if_fail (task != NULL);
+
+ /* only binary transfers please */
+ g_vfs_ftp_task_send (task, 0, "TYPE I");
+ if (g_vfs_ftp_task_is_in_error (task))
+ return;
+
+#if 0
+ /* RFC 2428 suggests to send this to make NAT routers happy */
+ /* XXX: Disabled for the following reasons:
+ * - most ftp clients don't use it
+ * - lots of broken ftp servers can't see the difference between
+ * "EPSV" and "EPSV ALL"
+ * - impossible to dynamically fall back to regular PASV in case
+ * EPSV doesn't work for some reason.
+ * If this makes your ftp connection fail, please file a bug and we will
+ * try to invent a way to make this all work. Until then, we'll just
+ * ignore the RFC.
+ */
+ if (g_vfs_backend_ftp_has_feature (task->backend, g_VFS_FTP_FEATURE_EPSV))
+ g_vfs_ftp_task_send (task, 0, "EPSV ALL");
+ g_vfs_ftp_task_clear_error (task);
+#endif
+
+ /* instruct server that we'll give and assume we get utf8 */
+ if (g_vfs_backend_ftp_has_feature (task->backend, G_VFS_FTP_FEATURE_UTF8))
+ {
+ if (!g_vfs_ftp_task_send (task, 0, "OPTS UTF8 ON"))
+ g_vfs_ftp_task_clear_error (task);
+ }
+}
+
+
+static void
+do_broadcast (GCancellable *cancellable, GCond *cond)
+{
+ g_cond_broadcast (cond);
+}
+
+/**
+ * g_vfs_ftp_task_acquire_connection:
+ * @task: a task without an associated connection
+ *
+ * Acquires a new connection for use by this @task. This uses the connection
+ * pool of @task's backend, so it reuses previously opened connections and
+ * does not reopen new connections unnecessarily. If all connections are busy,
+ * it waits %G_VFS_FTP_TIMEOUT_IN_SECONDS seconds for a new connection to
+ * become available. Keep in mind that a newly acquired connection might have
+ * timed out and therefore closed by the FTP server. You must account for
+ * this when sending the first command to the server.
+ *
+ * Returns: %TRUE if a connection could be acquired, %FALSE if an error
+ * occured
+ **/
+static gboolean
+g_vfs_ftp_task_acquire_connection (GVfsFtpTask *task)
+{
+ GVfsBackendFtp *ftp;
+ GTimeVal now;
+ gulong id;
+
+ g_return_val_if_fail (task != NULL, FALSE);
+ g_return_val_if_fail (task->conn == NULL, FALSE);
+
+ if (g_vfs_ftp_task_is_in_error (task))
+ return FALSE;
+
+ ftp = task->backend;
+ g_mutex_lock (ftp->mutex);
+ id = g_cancellable_connect (task->cancellable,
+ G_CALLBACK (do_broadcast),
+ ftp->cond, NULL);
+ while (task->conn == NULL && ftp->queue != NULL)
+ {
+ if (g_cancellable_is_cancelled (task->cancellable))
+ {
+ task->error = g_error_new_literal (G_IO_ERROR, G_IO_ERROR_CANCELLED,
+ _("Operation was cancelled"));
+ break;
+ }
+
+ task->conn = g_queue_pop_head (ftp->queue);
+ if (task->conn != NULL)
+ break;
+
+ if (ftp->connections < ftp->max_connections)
+ {
+ /* Save current number of connections here, so we can limit maximum
+ * connections later.
+ * This is necessary for threading reasons (connections can be
+ * opened or closed while we are still in the opening process. */
+ guint maybe_max_connections = ftp->connections;
+
+ ftp->connections++;
+ g_mutex_unlock (ftp->mutex);
+ task->conn = g_vfs_ftp_connection_new (ftp->addr, task->cancellable, &task->error);
+ if (G_LIKELY (task->conn != NULL))
+ {
+ g_vfs_ftp_task_receive (task, 0, NULL);
+ g_vfs_ftp_task_login (task, ftp->user, ftp->password);
+ g_vfs_ftp_task_setup_connection (task);
+ if (G_LIKELY (!g_vfs_ftp_task_is_in_error (task)))
+ break;
+ }
+
+ g_vfs_ftp_task_clear_error (task);
+ g_vfs_ftp_connection_free (task->conn);
+ task->conn = NULL;
+ g_mutex_lock (ftp->mutex);
+ ftp->connections--;
+ ftp->max_connections = MIN (ftp->max_connections, maybe_max_connections);
+ if (ftp->max_connections == 0)
+ {
+ DEBUG ("no more connections left, exiting...");
+ /* FIXME: shut down properly */
+ exit (0);
+ }
+
+ continue;
+ }
+
+ g_get_current_time (&now);
+ g_time_val_add (&now, G_VFS_FTP_TIMEOUT_IN_SECONDS * 1000 * 1000);
+ if (!g_cond_timed_wait (ftp->cond, ftp->mutex, &now))
+ {
+ task->error = g_error_new_literal (G_IO_ERROR, G_IO_ERROR_BUSY,
+ _("The FTP server is busy. Try again later"));
+ break;
+ }
+ }
+ g_cancellable_disconnect (task->cancellable, id);
+ g_mutex_unlock (ftp->mutex);
+
+ return task->conn != NULL;
+}
+
+/**
+ * g_vfs_ftp_task_release_connection:
+ * @task: a task
+ *
+ * Releases the connection in use by @task to the backend's connection pool,
+ * or frees it if it is in an error state. You must use this function to free
+ * a @task's connection, never use g_vfs_ftp_connection_free() directly. If
+ * the task does not have a current connection, this function just returns.
+ **/
+static void
+g_vfs_ftp_task_release_connection (GVfsFtpTask *task)
+{
+ g_return_if_fail (task != NULL);
+
+ /* we allow task->conn == NULL to ease error cases */
+ if (task->conn == NULL)
+ return;
+
+ g_mutex_lock (task->backend->mutex);
+ if (task->backend->queue && g_vfs_ftp_connection_is_usable (task->conn))
+ {
+ g_queue_push_tail (task->backend->queue, task->conn);
+ g_cond_signal (task->backend->cond);
+ }
+ else
+ g_vfs_ftp_connection_free (task->conn);
+ g_mutex_unlock (task->backend->mutex);
+ task->conn = NULL;
+}
+
+/**
+ * g_vfs_ftp_task_done:
+ * @task: the task to finalize
+ *
+ * Finalizes the given task and clears all memory in use. It also marks the
+ * associated job as success or failure depending on the error state of the
+ * task.
+ **/
+void
+g_vfs_ftp_task_done (GVfsFtpTask *task)
+{
+ g_return_if_fail (task != NULL);
+
+ if (task->conn)
+ g_vfs_ftp_task_release_connection (task);
+
+ if (task->job)
+ {
+ if (g_vfs_ftp_task_is_in_error (task))
+ g_vfs_job_failed_from_error (task->job, task->error);
+ else
+ g_vfs_job_succeeded (task->job);
+ }
+
+ g_vfs_ftp_task_clear_error (task);
+}
+
+/**
+ * g_vfs_ftp_task_set_error_from_response:
+ * @task: the task
+ * @response: the response code
+ *
+ * Sets the @task into an error state. The exact error is determined from the
+ * @response code.
+ **/
+void
+g_vfs_ftp_task_set_error_from_response (GVfsFtpTask *task, guint response)
+{
+ const char *msg;
+ int code;
+
+ g_return_if_fail (task != NULL);
+ g_return_if_fail (task->error == NULL);
+
+ /* Please keep this list ordered by response code,
+ * but group responses with the same message. */
+ switch (response)
+ {
+ case 332: /* Need account for login. */
+ case 532: /* Need account for storing files. */
+ /* FIXME: implement a sane way to handle accounts. */
+ code = G_IO_ERROR_NOT_SUPPORTED;
+ msg = _("Accounts are unsupported");
+ break;
+ case 421: /* Service not available, closing control connection. */
+ code = G_IO_ERROR_FAILED;
+ msg = _("Host closed connection");
+ break;
+ case 425: /* Can't open data connection. */
+ code = G_IO_ERROR_CLOSED;
+ msg = _("Cannot open data connection. Maybe your firewall prevents this?");
+ break;
+ case 426: /* Connection closed; transfer aborted. */
+ code = G_IO_ERROR_CLOSED;
+ msg = _("Data connection closed");
+ break;
+ case 450: /* Requested file action not taken. File unavailable (e.g., file busy). */
+ case 550: /* Requested action not taken. File unavailable (e.g., file not found, no access). */
+ /* FIXME: This is a lot of different errors. So we have to pretend to
+ * be smart here. */
+ code = G_IO_ERROR_FAILED;
+ msg = _("Operation failed");
+ break;
+ case 451: /* Requested action aborted: local error in processing. */
+ code = G_IO_ERROR_FAILED;
+ msg = _("Operation failed");
+ break;
+ case 452: /* Requested action not taken. Insufficient storage space in system. */
+ case 552:
+ code = G_IO_ERROR_NO_SPACE;
+ msg = _("No space left on server");
+ break;
+ case 500: /* Syntax error, command unrecognized. */
+ case 501: /* Syntax error in parameters or arguments. */
+ case 502: /* Command not implemented. */
+ case 503: /* Bad sequence of commands. */
+ case 504: /* Command not implemented for that parameter. */
+ code = G_IO_ERROR_NOT_SUPPORTED;
+ msg = _("Operation unsupported");
+ break;
+ case 530: /* Not logged in. */
+ code = G_IO_ERROR_PERMISSION_DENIED;
+ msg = _("Permission denied");
+ break;
+ case 551: /* Requested action aborted: page type unknown. */
+ code = G_IO_ERROR_FAILED;
+ msg = _("Page type unknown");
+ break;
+ case 553: /* Requested action not taken. File name not allowed. */
+ code = G_IO_ERROR_INVALID_FILENAME;
+ msg = _("Invalid filename");
+ break;
+ default:
+ code = G_IO_ERROR_FAILED;
+ msg = _("Invalid reply");
+ break;
+ }
+
+ g_set_error_literal (&task->error, G_IO_ERROR, code, msg);
+}
+
+/**
+ * g_vfs_ftp_task_give_connection:
+ * @task: the task
+ * @conn: the connection that the @task should use
+ *
+ * Forces a given @task to do I/O using the given connection. The @task must
+ * not have a connection associated with itself. The @task will take
+ * ownership of @conn.
+ **/
+void
+g_vfs_ftp_task_give_connection (GVfsFtpTask * task,
+ GVfsFtpConnection *conn)
+{
+ g_return_if_fail (task != NULL);
+ g_return_if_fail (task->conn == NULL);
+
+ task->conn = conn;
+}
+
+/**
+ * g_vfs_ftp_task_take_connection:
+ * @task: the task
+ *
+ * Acquires the connection in use by the @task, so it can later be used with
+ * g_vfs_ftp_task_give_connection(). This or any other task will not use the
+ * connection anymore. The @task must have a connection in use.
+ *
+ * Returns: The connection that @task was using. You acquire ownership of
+ * the connection.
+ **/
+GVfsFtpConnection *
+g_vfs_ftp_task_take_connection (GVfsFtpTask *task)
+{
+ GVfsFtpConnection *conn;
+
+ g_return_val_if_fail (task != NULL, NULL);
+ g_return_val_if_fail (task->conn != NULL, NULL);
+
+ conn = task->conn;
+ task->conn = NULL;
+
+ return conn;
+}
+
+/**
+ * g_vfs_ftp_task_send:
+ * @task: the sending task
+ * @flags: response flags to use when sending
+ * @format: format string to construct command from
+ * (without trailing \r\n)
+ * @...: arguments to format string
+ *
+ * Shortcut to calling g_vfs_ftp_task_send_and_check() with the reply, funcs
+ * and data arguments set to %NULL. See that function for details.
+ *
+ * Returns: 0 on error or the received FTP code otherwise.
+ **/
+guint
+g_vfs_ftp_task_send (GVfsFtpTask * task,
+ GVfsFtpResponseFlags flags,
+ const char * format,
+ ...)
+{
+ va_list varargs;
+ guint response;
+
+ g_return_val_if_fail (task != NULL, 0);
+ g_return_val_if_fail (format != NULL, 0);
+
+ va_start (varargs, format);
+ response = g_vfs_ftp_task_sendv (task,
+ flags,
+ NULL,
+ format,
+ varargs);
+ va_end (varargs);
+ return response;
+}
+
+/**
+ * g_vfs_ftp_task_send_and_check:
+ * @task: the sending task
+ * @flags: response flags to use when sending
+ * @funcs: %NULL or %NULL-terminated array of functions used to determine the
+ * exact failure case upon a "550 Operation Failed" reply. This is
+ * often necessary
+ * @data: data to pass to @funcs.
+ * @reply: %NULL or pointer to take a char array containing the full reply of
+ * the ftp server upon successful reply. Use g_strfreev() to free
+ * after use.
+ * @format: format string to construct command from
+ * (without trailing \r\n)
+ * @...: arguments to format string
+ *
+ * Takes an ftp command in printf-style @format, potentially acquires a
+ * connection automatically, sends the command and waits for an answer from
+ * the ftp server. Without any @flags, FTP response codes other than 2xx cause
+ * an error. If @reply is not %NULL, the full reply will be put into a
+ * %NULL-terminated string array that must be freed with g_strfreev() after
+ * use.
+ * If @funcs is set, the 550 response code will cause all of these functions to
+ * be called in order passing them the @task and @data arguments given to this
+ * function until one of them sets an error on @task. This error will then be
+ * returned from this function. If none of those functions sets an error, the
+ * generic error for the 550 response will be used.
+ * If an error has been set on @task previously, this function will do nothing.
+ *
+ * Returns: 0 on error or the received FTP code otherwise.
+ **/
+guint
+g_vfs_ftp_task_send_and_check (GVfsFtpTask * task,
+ GVfsFtpResponseFlags flags,
+ const GVfsFtpErrorFunc *funcs,
+ gpointer data,
+ char *** reply,
+ const char * format,
+ ...)
+{
+ va_list varargs;
+ guint response;
+
+ g_return_val_if_fail (task != NULL, 0);
+ g_return_val_if_fail (format != NULL, 0);
+ g_return_val_if_fail (funcs == NULL || funcs[0] != NULL, 0);
+
+ if (funcs)
+ {
+ g_return_val_if_fail ((flags & G_VFS_FTP_PASS_550) == 0, 0);
+ flags |= G_VFS_FTP_PASS_550;
+ }
+
+ va_start (varargs, format);
+ response = g_vfs_ftp_task_sendv (task,
+ flags,
+ reply,
+ format,
+ varargs);
+ va_end (varargs);
+
+ if (response == 550 && funcs)
+ {
+ while (*funcs && !g_vfs_ftp_task_is_in_error (task))
+ {
+ (*funcs) (task, data);
+ funcs++;
+ }
+ if (!g_vfs_ftp_task_is_in_error (task))
+ g_vfs_ftp_task_set_error_from_response (task, response);
+ response = 0;
+ }
+
+ return response;
+}
+
+/**
+ * g_vfs_ftp_task_sendv:
+ * @task: the sending task
+ * @flags: response flags to use when receiving the reply
+ * @reply: %NULL or pointer to char array that takes the full reply from the
+ * server
+ * @format: format string to construct command from
+ * (without trailing \r\n)
+ * @varargs: arguments to format string
+ *
+ * This is the varargs version of g_vfs_ftp_task_send(). See that function
+ * for details.
+ *
+ * Returns: the received FTP code or 0 on error.
+ **/
+guint
+g_vfs_ftp_task_sendv (GVfsFtpTask * task,
+ GVfsFtpResponseFlags flags,
+ char *** reply,
+ const char * format,
+ va_list varargs)
+{
+ GString *command;
+ gboolean retry_on_timeout = FALSE;
+ guint response;
+
+ if (g_vfs_ftp_task_is_in_error (task))
+ return 0;
+
+ command = g_string_new ("");
+ g_string_append_vprintf (command, format, varargs);
+ g_string_append (command, "\r\n");
+
+retry:
+ if (task->conn == NULL)
+ {
+ if (!g_vfs_ftp_task_acquire_connection (task))
+ {
+ g_string_free (command, TRUE);
+ return 0;
+ }
+ retry_on_timeout = TRUE;
+ }
+
+#ifdef PRINT_DEBUG
+ if (g_str_has_prefix (command->str, "PASS"))
+ DEBUG ("--> PASS ***\n");
+ else
+ {
+ command->str[command->len - 2] = 0;
+ DEBUG ("--> %s\n", command->str);
+ command->str[command->len - 2] = '\r';
+ }
+#endif
+ g_vfs_ftp_connection_send (task->conn,
+ command->str,
+ command->len,
+ task->cancellable,
+ &task->error);
+
+ response = g_vfs_ftp_task_receive (task, flags, reply);
+
+ /* NB: requires adaption if we allow passing 4xx responses */
+ if (retry_on_timeout &&
+ g_vfs_ftp_task_is_in_error (task) &&
+ !g_vfs_ftp_connection_is_usable (task->conn))
+ {
+ g_vfs_ftp_task_clear_error (task);
+ g_vfs_ftp_task_release_connection (task);
+ goto retry;
+ }
+
+ g_string_free (command, TRUE);
+ return response;
+}
+
+/**
+ * g_vfs_ftp_task_receive:
+ * @task: the receiving task
+ * @flags: response flags to use
+ * @reply: %NULL or pointer to char array that takes the full reply from the
+ * server
+ *
+ * Unless @task is in an error state, this function receives a reply from
+ * the @task's connection. The @task must have a connection set, which will
+ * happen when either g_vfs_ftp_task_send() or
+ * g_vfs_ftp_task_give_connection() have been called on the @task before.
+ * Unless @flags are given, all reply codes not in the 200s cause an error.
+ * If @task is in an error state when calling this function, nothing will
+ * happen and the function will just return.
+ *
+ * Returns: the received FTP code or 0 on error.
+ **/
+guint
+g_vfs_ftp_task_receive (GVfsFtpTask * task,
+ GVfsFtpResponseFlags flags,
+ char *** reply)
+{
+ guint response;
+
+ g_return_val_if_fail (task != NULL, 0);
+ if (g_vfs_ftp_task_is_in_error (task))
+ return 0;
+ g_return_val_if_fail (task->conn != NULL, 0);
+
+ response = g_vfs_ftp_connection_receive (task->conn,
+ reply,
+ task->cancellable,
+ &task->error);
+
+ switch (G_VFS_FTP_RESPONSE_GROUP (response))
+ {
+ case 0:
+ return 0;
+ case 1:
+ if (flags & G_VFS_FTP_PASS_100)
+ break;
+ g_vfs_ftp_task_set_error_from_response (task, response);
+ return 0;
+ case 2:
+ if (flags & G_VFS_FTP_FAIL_200)
+ {
+ g_vfs_ftp_task_set_error_from_response (task, response);
+ return 0;
+ }
+ break;
+ case 3:
+ if (flags & G_VFS_FTP_PASS_300)
+ break;
+ g_vfs_ftp_task_set_error_from_response (task, response);
+ return 0;
+ case 4:
+ g_vfs_ftp_task_set_error_from_response (task, response);
+ return 0;
+ case 5:
+ if ((flags & G_VFS_FTP_PASS_500) ||
+ (response == 550 && (flags & G_VFS_FTP_PASS_550)))
+ break;
+ g_vfs_ftp_task_set_error_from_response (task, response);
+ return 0;
+ default:
+ g_assert_not_reached ();
+ break;
+ }
+
+ return response;
+}
+
+static GSocketAddress *
+g_vfs_ftp_task_create_remote_address (GVfsFtpTask *task, guint port)
+{
+ GSocketAddress *old, *new;
+
+ old = g_vfs_ftp_connection_get_address (task->conn, &task->error);
+ if (old == NULL)
+ return NULL;
+ g_assert (G_IS_INET_SOCKET_ADDRESS (old));
+ new = g_inet_socket_address_new (g_inet_socket_address_get_address (G_INET_SOCKET_ADDRESS (old)), port);
+
+ return new;
+}
+
+static gboolean
+g_vfs_ftp_task_open_data_connection_epsv (GVfsFtpTask *task)
+{
+ const char *s;
+ char **reply;
+ guint port;
+ GSocketAddress *addr;
+ guint status;
+
+ g_assert (task->error == NULL);
+
+ if (!g_vfs_backend_ftp_has_feature (task->backend, G_VFS_FTP_FEATURE_EPSV) ||
+ g_vfs_backend_ftp_uses_workaround (task->backend, G_VFS_FTP_WORKAROUND_BROKEN_EPSV))
+ return FALSE;
+
+ status = g_vfs_ftp_task_send_and_check (task, G_VFS_FTP_PASS_500, NULL, NULL, &reply, "EPSV");
+ if (G_VFS_FTP_RESPONSE_GROUP (status) != 2)
+ goto fail;
+
+ /* FIXME: parse multiple lines? */
+ s = strrchr (reply[0], '(');
+ if (!s)
+ goto fail;
+
+ s += 4;
+ port = strtoul (s, NULL, 10);
+ if (port == 0)
+ goto fail;
+
+ g_strfreev (reply);
+ addr = g_vfs_ftp_task_create_remote_address (task, port);
+ if (addr == NULL)
+ return FALSE;
+
+ if (!g_vfs_ftp_connection_open_data_connection (task->conn,
+ addr,
+ task->cancellable,
+ &task->error))
+ {
+ g_object_unref (addr);
+ DEBUG ("Successful EPSV response code, but data connection failed. Enabling FTP_WORKAROUND_BROKEN_EPSV.\n");
+ g_vfs_backend_ftp_use_workaround (task->backend, G_VFS_FTP_WORKAROUND_BROKEN_EPSV);
+ g_vfs_ftp_task_clear_error (task);
+ return FALSE;
+ }
+
+ g_object_unref (addr);
+ return TRUE;
+
+fail:
+ g_strfreev (reply);
+ return FALSE;
+}
+
+static gboolean
+g_vfs_ftp_task_open_data_connection_pasv (GVfsFtpTask *task)
+{
+ guint ip1, ip2, ip3, ip4, port1, port2;
+ char **reply;
+ const char *s;
+ GSocketAddress *addr;
+ guint status;
+
+ /* only binary transfers please */
+ status = g_vfs_ftp_task_send_and_check (task, 0, NULL, NULL, &reply, "PASV");
+ if (status == 0)
+ return FALSE;
+
+ /* parse response and try to find the address to connect to.
+ * This code does the same as curl.
+ */
+ for (s = reply[0]; *s; s++)
+ {
+ if (sscanf (s, "%u,%u,%u,%u,%u,%u",
+ &ip1, &ip2, &ip3, &ip4,
+ &port1, &port2) == 6)
+ break;
+ }
+ g_strfreev (reply);
+ if (*s == 0)
+ {
+ g_set_error_literal (&task->error, G_IO_ERROR, G_IO_ERROR_FAILED,
+ _("Invalid reply"));
+ return FALSE;
+ }
+
+ if (!g_vfs_backend_ftp_uses_workaround (task->backend, G_VFS_FTP_WORKAROUND_PASV_ADDR))
+ {
+ guint8 ip[4];
+ GInetAddress *inet_addr;
+
+ ip[0] = ip1;
+ ip[1] = ip2;
+ ip[2] = ip3;
+ ip[3] = ip4;
+ inet_addr = g_inet_address_new_from_bytes (ip, G_SOCKET_FAMILY_IPV4);
+ addr = g_inet_socket_address_new (inet_addr, port1 << 8 | port2);
+ g_object_unref (inet_addr);
+
+ if (g_vfs_ftp_connection_open_data_connection (task->conn,
+ addr,
+ task->cancellable,
+ &task->error))
+ {
+ g_object_unref (addr);
+ return TRUE;
+ }
+
+ g_object_unref (addr);
+ /* set workaround flag (see below), so we don't try this again */
+ DEBUG ("Successfull PASV response but data connection failed. Enabling FTP_WORKAROUND_PASV_ADDR.\n");
+ g_vfs_backend_ftp_use_workaround (task->backend, G_VFS_FTP_WORKAROUND_PASV_ADDR);
+ g_vfs_ftp_task_clear_error (task);
+ }
+
+ /* Workaround code:
+ * Various ftp servers aren't setup correctly when behind a NAT. They report
+ * their own IP address (like 10.0.0.4) and not the address in front of the
+ * NAT. But this is likely the same address that we connected to with our
+ * command connetion. So if the address given by PASV fails, we fall back
+ * to the address of the command stream.
+ */
+ addr = g_vfs_ftp_task_create_remote_address (task, port1 << 8 | port2);
+ if (addr == NULL)
+ return FALSE;
+ if (!g_vfs_ftp_connection_open_data_connection (task->conn,
+ addr,
+ task->cancellable,
+ &task->error))
+ {
+ g_object_unref (addr);
+ return FALSE;
+ }
+
+ g_object_unref (addr);
+ return TRUE;
+}
+
+/**
+ * g_vfs_ftp_task_close_data_connection:
+ * @task: a task potentially having an open data connection
+ *
+ * Closes any data connection @task might have opened.
+ */
+/**
+ * g_vfs_ftp_task_open_data_connection:
+ * @task: a task not having an open data connection
+ *
+ * Tries to open a data connection to the ftp server. If the operation fails,
+ * @task will be set into an error state.
+ **/
+void
+g_vfs_ftp_task_open_data_connection (GVfsFtpTask *task)
+{
+ g_return_if_fail (task != NULL);
+
+ if (g_vfs_ftp_task_is_in_error (task))
+ return;
+
+ /* only check this here, erroneous connection might have failed to acquire a connection. */
+ g_return_if_fail (task->conn != NULL);
+
+ if (g_vfs_ftp_task_open_data_connection_epsv (task))
+ return;
+
+ if (g_vfs_ftp_task_is_in_error (task))
+ return;
+
+ g_vfs_ftp_task_open_data_connection_pasv (task);
+}
+
diff --git a/daemon/gvfsftptask.h b/daemon/gvfsftptask.h
new file mode 100644
index 00000000..2bd9bd20
--- /dev/null
+++ b/daemon/gvfsftptask.h
@@ -0,0 +1,99 @@
+/* GIO - GLib Input, Output and Streaming Library
+ *
+ * Copyright (C) 2009 Benjamin Otte <otte@gnome.org>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General
+ * Public License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
+ * Boston, MA 02111-1307, USA.
+ *
+ * Author: Benjamin Otte <otte@gnome.org>
+ */
+
+#ifndef __G_VFS_FTP_TASK_H__
+#define __G_VFS_FTP_TASK_H__
+
+#include "gvfsbackendftp.h"
+#include "gvfsftpconnection.h"
+
+G_BEGIN_DECLS
+
+typedef enum {
+ G_VFS_FTP_PASS_100 = (1 << 0),
+ G_VFS_FTP_PASS_300 = (1 << 1),
+ G_VFS_FTP_PASS_500 = (1 << 2),
+ G_VFS_FTP_PASS_550 = (1 << 3),
+ G_VFS_FTP_FAIL_200 = (1 << 4)
+} GVfsFtpResponseFlags;
+
+#define G_VFS_FTP_RESPONSE_GROUP(response) ((response) / 100)
+
+typedef struct _GVfsFtpTask GVfsFtpTask;
+struct _GVfsFtpTask
+{
+ GVfsBackendFtp * backend; /* backend this task is running on */
+ GVfsJob * job; /* job that is processed or NULL if not bound to a task */
+ GCancellable * cancellable; /* cancellable in use */
+
+ GError * error; /* NULL or current error - will be propagated to task */
+ GVfsFtpConnection * conn; /* connection in use by this task or NULL if none */
+};
+
+typedef void (* GVfsFtpErrorFunc) (GVfsFtpTask *task, gpointer data);
+
+#define G_VFS_FTP_TASK_INIT(backend,job) { (backend), (job), (job)->cancellable, }
+void g_vfs_ftp_task_done (GVfsFtpTask * task);
+
+#define g_vfs_ftp_task_is_in_error(task) ((task)->error != NULL)
+#define g_vfs_ftp_task_clear_error(task) (g_clear_error (&(task)->error))
+void g_vfs_ftp_task_set_error_from_response (GVfsFtpTask * task,
+ guint response);
+
+void g_vfs_ftp_task_give_connection (GVfsFtpTask * task,
+ GVfsFtpConnection * conn);
+GVfsFtpConnection * g_vfs_ftp_task_take_connection (GVfsFtpTask * task);
+
+guint g_vfs_ftp_task_send (GVfsFtpTask * task,
+ GVfsFtpResponseFlags flags,
+ const char * format,
+ ...) G_GNUC_PRINTF (3, 4);
+guint g_vfs_ftp_task_send_and_check (GVfsFtpTask * task,
+ GVfsFtpResponseFlags flags,
+ const GVfsFtpErrorFunc *funcs,
+ gpointer data,
+ char *** reply,
+ const char * format,
+ ...) G_GNUC_PRINTF (6, 7);
+guint g_vfs_ftp_task_sendv (GVfsFtpTask * task,
+ GVfsFtpResponseFlags flags,
+ char *** reply,
+ const char * format,
+ va_list varargs);
+guint g_vfs_ftp_task_receive (GVfsFtpTask * task,
+ GVfsFtpResponseFlags flags,
+ char *** reply);
+void g_vfs_ftp_task_open_data_connection (GVfsFtpTask * task);
+#define g_vfs_ftp_task_close_data_connection(task) G_STMT_START{\
+ if ((task)->conn) \
+ g_vfs_ftp_connection_close_data_connection((task)->conn);\
+}G_STMT_END
+
+gboolean g_vfs_ftp_task_login (GVfsFtpTask * task,
+ const char * username,
+ const char * password);
+void g_vfs_ftp_task_setup_connection (GVfsFtpTask * task);
+
+
+G_END_DECLS
+
+#endif /* __G_VFS_FTP_TASK_H__ */
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