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- /**
- * @file ft.h File Transfer API
- * @ingroup core
- *
- * purple
- *
- * Purple is the legal property of its developers, whose names are too numerous
- * to list here. Please refer to the COPYRIGHT file distributed with this
- * source distribution.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- * @see @ref xfer-signals
- */
- #ifndef _PURPLE_FT_H_
- #define _PURPLE_FT_H_
-
- /**************************************************************************/
- /** Data Structures */
- /**************************************************************************/
- typedef struct _PurpleXfer PurpleXfer;
-
- #include <glib.h>
- #include <stdio.h>
-
- #include "account.h"
-
- /**
- * Types of file transfers.
- */
- typedef enum
- {
- PURPLE_XFER_UNKNOWN = 0, /**< Unknown file transfer type. */
- PURPLE_XFER_SEND, /**< File sending. */
- PURPLE_XFER_RECEIVE /**< File receiving. */
-
- } PurpleXferType;
-
- /**
- * The different states of the xfer.
- */
- typedef enum
- {
- PURPLE_XFER_STATUS_UNKNOWN = 0, /**< Unknown, the xfer may be null. */
- PURPLE_XFER_STATUS_NOT_STARTED, /**< It hasn't started yet. */
- PURPLE_XFER_STATUS_ACCEPTED, /**< Receive accepted, but destination file not selected yet */
- PURPLE_XFER_STATUS_STARTED, /**< purple_xfer_start has been called. */
- PURPLE_XFER_STATUS_DONE, /**< The xfer completed successfully. */
- PURPLE_XFER_STATUS_CANCEL_LOCAL, /**< The xfer was canceled by us. */
- PURPLE_XFER_STATUS_CANCEL_REMOTE /**< The xfer was canceled by the other end, or we couldn't connect. */
- } PurpleXferStatusType;
-
- /**
- * File transfer UI operations.
- *
- * Any UI representing a file transfer must assign a filled-out
- * PurpleXferUiOps structure to the purple_xfer.
- */
- typedef struct
- {
- void (*new_xfer)(PurpleXfer *xfer);
- void (*destroy)(PurpleXfer *xfer);
- void (*add_xfer)(PurpleXfer *xfer);
- void (*update_progress)(PurpleXfer *xfer, double percent);
- void (*cancel_local)(PurpleXfer *xfer);
- void (*cancel_remote)(PurpleXfer *xfer);
-
- void (*_purple_reserved1)(void);
- void (*_purple_reserved2)(void);
- void (*_purple_reserved3)(void);
- void (*_purple_reserved4)(void);
- } PurpleXferUiOps;
-
- /**
- * A core representation of a file transfer.
- */
- struct _PurpleXfer
- {
- guint ref; /**< The reference count. */
- PurpleXferType type; /**< The type of transfer. */
-
- PurpleAccount *account; /**< The account. */
-
- char *who; /**< The person on the other end of the
- transfer. */
-
- char *message; /**< A message sent with the request */
- char *filename; /**< The name sent over the network. */
- char *local_filename; /**< The name on the local hard drive. */
- size_t size; /**< The size of the file. */
-
- FILE *dest_fp; /**< The destination file pointer. */
-
- char *remote_ip; /**< The remote IP address. */
- int local_port; /**< The local port. */
- int remote_port; /**< The remote port. */
-
- int fd; /**< The socket file descriptor. */
- int watcher; /**< Watcher. */
-
- size_t bytes_sent; /**< The number of bytes sent. */
- size_t bytes_remaining; /**< The number of bytes remaining. */
- time_t start_time; /**< When the transfer of data began. */
- time_t end_time; /**< When the transfer of data ended. */
-
- size_t current_buffer_size; /**< This gradually increases for fast
- network connections. */
-
- PurpleXferStatusType status; /**< File Transfer's status. */
-
- /* I/O operations. */
- struct
- {
- void (*init)(PurpleXfer *xfer);
- void (*request_denied)(PurpleXfer *xfer);
- void (*start)(PurpleXfer *xfer);
- void (*end)(PurpleXfer *xfer);
- void (*cancel_send)(PurpleXfer *xfer);
- void (*cancel_recv)(PurpleXfer *xfer);
- gssize (*read)(guchar **buffer, PurpleXfer *xfer);
- gssize (*write)(const guchar *buffer, size_t size, PurpleXfer *xfer);
- void (*ack)(PurpleXfer *xfer, const guchar *buffer, size_t size);
-
- } ops;
-
- PurpleXferUiOps *ui_ops; /**< UI-specific operations. */
- void *ui_data; /**< UI-specific data. */
-
- void *data; /**< prpl-specific data. */
- };
-
- #ifdef __cplusplus
- extern "C" {
- #endif
-
- /**************************************************************************/
- /** @name File Transfer API */
- /**************************************************************************/
- /*@{*/
-
- /**
- * Creates a new file transfer handle.
- * This is called by prpls.
- * The handle starts with a ref count of 1, and this reference
- * is owned by the core. The prpl normally does not need to
- * purple_xfer_ref or unref.
- *
- * @param account The account sending or receiving the file.
- * @param type The type of file transfer.
- * @param who The name of the remote user.
- *
- * @return A file transfer handle.
- */
- PurpleXfer *purple_xfer_new(PurpleAccount *account,
- PurpleXferType type, const char *who);
-
- /**
- * Returns all xfers
- *
- * @return all current xfers with refs
- */
- GList *purple_xfers_get_all(void);
-
- /**
- * Increases the reference count on a PurpleXfer.
- * Please call purple_xfer_unref later.
- *
- * @param xfer A file transfer handle.
- */
- void purple_xfer_ref(PurpleXfer *xfer);
-
- /**
- * Decreases the reference count on a PurpleXfer.
- * If the reference reaches 0, purple_xfer_destroy (an internal function)
- * will destroy the xfer. It calls the ui destroy cb first.
- * Since the core keeps a ref on the xfer, only an erroneous call to
- * this function will destroy the xfer while still in use.
- *
- * @param xfer A file transfer handle.
- */
- void purple_xfer_unref(PurpleXfer *xfer);
-
- /**
- * Requests confirmation for a file transfer from the user. If receiving
- * a file which is known at this point, this requests user to accept and
- * save the file. If the filename is unknown (not set) this only requests user
- * to accept the file transfer. In this case protocol must call this function
- * again once the filename is available.
- *
- * @param xfer The file transfer to request confirmation on.
- */
- void purple_xfer_request(PurpleXfer *xfer);
-
- /**
- * Called if the user accepts the file transfer request.
- *
- * @param xfer The file transfer.
- * @param filename The filename.
- */
- void purple_xfer_request_accepted(PurpleXfer *xfer, const char *filename);
-
- /**
- * Called if the user rejects the file transfer request.
- *
- * @param xfer The file transfer.
- */
- void purple_xfer_request_denied(PurpleXfer *xfer);
-
- /**
- * Returns the type of file transfer.
- *
- * @param xfer The file transfer.
- *
- * @return The type of the file transfer.
- */
- PurpleXferType purple_xfer_get_type(const PurpleXfer *xfer);
-
- /**
- * Returns the account the file transfer is using.
- *
- * @param xfer The file transfer.
- *
- * @return The account.
- */
- PurpleAccount *purple_xfer_get_account(const PurpleXfer *xfer);
-
- /**
- * Returns the status of the xfer.
- *
- * @param xfer The file transfer.
- *
- * @return The status.
- */
- PurpleXferStatusType purple_xfer_get_status(const PurpleXfer *xfer);
-
- /**
- * Returns true if the file transfer was canceled.
- *
- * @param xfer The file transfer.
- *
- * @return Whether or not the transfer was canceled.
- */
- gboolean purple_xfer_is_canceled(const PurpleXfer *xfer);
-
- /**
- * Returns the completed state for a file transfer.
- *
- * @param xfer The file transfer.
- *
- * @return The completed state.
- */
- gboolean purple_xfer_is_completed(const PurpleXfer *xfer);
-
- /**
- * Returns the name of the file being sent or received.
- *
- * @param xfer The file transfer.
- *
- * @return The filename.
- */
- const char *purple_xfer_get_filename(const PurpleXfer *xfer);
-
- /**
- * Returns the file's destination filename,
- *
- * @param xfer The file transfer.
- *
- * @return The destination filename.
- */
- const char *purple_xfer_get_local_filename(const PurpleXfer *xfer);
-
- /**
- * Returns the number of bytes sent (or received) so far.
- *
- * @param xfer The file transfer.
- *
- * @return The number of bytes sent.
- */
- size_t purple_xfer_get_bytes_sent(const PurpleXfer *xfer);
-
- /**
- * Returns the number of bytes remaining to send or receive.
- *
- * @param xfer The file transfer.
- *
- * @return The number of bytes remaining.
- */
- size_t purple_xfer_get_bytes_remaining(const PurpleXfer *xfer);
-
- /**
- * Returns the size of the file being sent or received.
- *
- * @param xfer The file transfer.
- *
- * @return The total size of the file.
- */
- size_t purple_xfer_get_size(const PurpleXfer *xfer);
-
- /**
- * Returns the current percentage of progress of the transfer.
- *
- * This is a number between 0 (0%) and 1 (100%).
- *
- * @param xfer The file transfer.
- *
- * @return The percentage complete.
- */
- double purple_xfer_get_progress(const PurpleXfer *xfer);
-
- /**
- * Returns the local port number in the file transfer.
- *
- * @param xfer The file transfer.
- *
- * @return The port number on this end.
- */
- unsigned int purple_xfer_get_local_port(const PurpleXfer *xfer);
-
- /**
- * Returns the remote IP address in the file transfer.
- *
- * @param xfer The file transfer.
- *
- * @return The IP address on the other end.
- */
- const char *purple_xfer_get_remote_ip(const PurpleXfer *xfer);
-
- /**
- * Returns the remote port number in the file transfer.
- *
- * @param xfer The file transfer.
- *
- * @return The port number on the other end.
- */
- unsigned int purple_xfer_get_remote_port(const PurpleXfer *xfer);
-
- /**
- * Sets the completed state for the file transfer.
- *
- * @param xfer The file transfer.
- * @param completed The completed state.
- */
- void purple_xfer_set_completed(PurpleXfer *xfer, gboolean completed);
-
- /**
- * Sets the filename for the file transfer.
- *
- * @param xfer The file transfer.
- * @param message The message.
- */
- void purple_xfer_set_message(PurpleXfer *xfer, const char *message);
-
- /**
- * Sets the filename for the file transfer.
- *
- * @param xfer The file transfer.
- * @param filename The filename.
- */
- void purple_xfer_set_filename(PurpleXfer *xfer, const char *filename);
-
- /**
- * Sets the local filename for the file transfer.
- *
- * @param xfer The file transfer.
- * @param filename The filename
- */
- void purple_xfer_set_local_filename(PurpleXfer *xfer, const char *filename);
-
- /**
- * Sets the size of the file in a file transfer.
- *
- * @param xfer The file transfer.
- * @param size The size of the file.
- */
- void purple_xfer_set_size(PurpleXfer *xfer, size_t size);
-
- /**
- * Sets the current working position in the active file transfer. This
- * can be used to jump backward in the file if the protocol detects
- * that some bit of data needs to be resent or has been sent twice.
- *
- * It's used for pausing and resuming an oscar file transfer.
- *
- * @param xfer The file transfer.
- * @param bytes_sent The new current position in the file. If we're
- * sending a file then this is the byte that we will
- * send. If we're receiving a file, this is the
- * next byte that we expect to receive.
- */
- void purple_xfer_set_bytes_sent(PurpleXfer *xfer, size_t bytes_sent);
-
- /**
- * Returns the UI operations structure for a file transfer.
- *
- * @param xfer The file transfer.
- *
- * @return The UI operations structure.
- */
- PurpleXferUiOps *purple_xfer_get_ui_ops(const PurpleXfer *xfer);
-
- /**
- * Sets the read function for the file transfer.
- *
- * @param xfer The file transfer.
- * @param fnc The read function.
- */
- void purple_xfer_set_read_fnc(PurpleXfer *xfer,
- gssize (*fnc)(guchar **, PurpleXfer *));
-
- /**
- * Sets the write function for the file transfer.
- *
- * @param xfer The file transfer.
- * @param fnc The write function.
- */
- void purple_xfer_set_write_fnc(PurpleXfer *xfer,
- gssize (*fnc)(const guchar *, size_t, PurpleXfer *));
-
- /**
- * Sets the acknowledge function for the file transfer.
- *
- * @param xfer The file transfer.
- * @param fnc The acknowledge function.
- */
- void purple_xfer_set_ack_fnc(PurpleXfer *xfer,
- void (*fnc)(PurpleXfer *, const guchar *, size_t));
-
- /**
- * Sets the function to be called if the request is denied.
- *
- * @param xfer The file transfer.
- * @param fnc The request denied prpl callback.
- */
- void purple_xfer_set_request_denied_fnc(PurpleXfer *xfer, void (*fnc)(PurpleXfer *));
-
- /**
- * Sets the transfer initialization function for the file transfer.
- *
- * This function is required, and must call purple_xfer_start() with
- * the necessary parameters. This will be called if the file transfer
- * is accepted by the user.
- *
- * @param xfer The file transfer.
- * @param fnc The transfer initialization function.
- */
- void purple_xfer_set_init_fnc(PurpleXfer *xfer, void (*fnc)(PurpleXfer *));
-
- /**
- * Sets the start transfer function for the file transfer.
- *
- * @param xfer The file transfer.
- * @param fnc The start transfer function.
- */
- void purple_xfer_set_start_fnc(PurpleXfer *xfer, void (*fnc)(PurpleXfer *));
-
- /**
- * Sets the end transfer function for the file transfer.
- *
- * @param xfer The file transfer.
- * @param fnc The end transfer function.
- */
- void purple_xfer_set_end_fnc(PurpleXfer *xfer, void (*fnc)(PurpleXfer *));
-
- /**
- * Sets the cancel send function for the file transfer.
- *
- * @param xfer The file transfer.
- * @param fnc The cancel send function.
- */
- void purple_xfer_set_cancel_send_fnc(PurpleXfer *xfer, void (*fnc)(PurpleXfer *));
-
- /**
- * Sets the cancel receive function for the file transfer.
- *
- * @param xfer The file transfer.
- * @param fnc The cancel receive function.
- */
- void purple_xfer_set_cancel_recv_fnc(PurpleXfer *xfer, void (*fnc)(PurpleXfer *));
-
- /**
- * Reads in data from a file transfer stream.
- *
- * @param xfer The file transfer.
- * @param buffer The buffer that will be created to contain the data.
- *
- * @return The number of bytes read, or -1.
- */
- gssize purple_xfer_read(PurpleXfer *xfer, guchar **buffer);
-
- /**
- * Writes data to a file transfer stream.
- *
- * @param xfer The file transfer.
- * @param buffer The buffer to read the data from.
- * @param size The number of bytes to write.
- *
- * @return The number of bytes written, or -1.
- */
- gssize purple_xfer_write(PurpleXfer *xfer, const guchar *buffer, gsize size);
-
- /**
- * Starts a file transfer.
- *
- * Either @a fd must be specified <i>or</i> @a ip and @a port on a
- * file receive transfer. On send, @a fd must be specified, and
- * @a ip and @a port are ignored.
- *
- * @param xfer The file transfer.
- * @param fd The file descriptor for the socket.
- * @param ip The IP address to connect to.
- * @param port The port to connect to.
- */
- void purple_xfer_start(PurpleXfer *xfer, int fd, const char *ip,
- unsigned int port);
-
- /**
- * Ends a file transfer.
- *
- * @param xfer The file transfer.
- */
- void purple_xfer_end(PurpleXfer *xfer);
-
- /**
- * Adds a new file transfer to the list of file transfers. Call this only
- * if you are not using purple_xfer_start.
- *
- * @param xfer The file transfer.
- */
- void purple_xfer_add(PurpleXfer *xfer);
-
- /**
- * Cancels a file transfer on the local end.
- *
- * @param xfer The file transfer.
- */
- void purple_xfer_cancel_local(PurpleXfer *xfer);
-
- /**
- * Cancels a file transfer from the remote end.
- *
- * @param xfer The file transfer.
- */
- void purple_xfer_cancel_remote(PurpleXfer *xfer);
-
- /**
- * Displays a file transfer-related error message.
- *
- * This is a wrapper around purple_notify_error(), which automatically
- * specifies a title ("File transfer to <i>user</i> failed" or
- * "File Transfer from <i>user</i> failed").
- *
- * @param type The type of file transfer.
- * @param account The account sending or receiving the file.
- * @param who The user on the other end of the transfer.
- * @param msg The message to display.
- */
- void purple_xfer_error(PurpleXferType type, PurpleAccount *account, const char *who, const char *msg);
-
- /**
- * Updates file transfer progress.
- *
- * @param xfer The file transfer.
- */
- void purple_xfer_update_progress(PurpleXfer *xfer);
-
- /**
- * Displays a file transfer-related message in the conversation window
- *
- * This is a wrapper around purple_conversation_write
- *
- * @param xfer The file transfer to which this message relates.
- * @param message The message to display.
- * @param is_error Is this an error message?.
- */
- void purple_xfer_conversation_write(PurpleXfer *xfer, char *message, gboolean is_error);
-
- /*@}*/
-
- /**************************************************************************/
- /** @name UI Registration Functions */
- /**************************************************************************/
- /*@{*/
-
- /**
- * Returns the handle to the file transfer subsystem
- *
- * @return The handle
- */
- void *purple_xfers_get_handle(void);
-
- /**
- * Initializes the file transfer subsystem
- */
- void purple_xfers_init(void);
-
- /**
- * Uninitializes the file transfer subsystem
- */
- void purple_xfers_uninit(void);
-
- /**
- * Sets the UI operations structure to be used in all purple file transfers.
- *
- * @param ops The UI operations structure.
- */
- void purple_xfers_set_ui_ops(PurpleXferUiOps *ops);
-
- /**
- * Returns the UI operations structure to be used in all purple file transfers.
- *
- * @return The UI operations structure.
- */
- PurpleXferUiOps *purple_xfers_get_ui_ops(void);
-
- /*@}*/
-
- #ifdef __cplusplus
- }
- #endif
-
- #endif /* _PURPLE_FT_H_ */
-