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globus_ftp_control.h

NAME

globus_ftp_control.h -

GSIFTP Control Connection API (Data structures and types).

SYNOPSIS

Data Structures

struct globus_ftp_control_dcau_subject_s
control dcau subject authentication type
struct globus_ftp_control_round_robin_s
control striping round robin attribute structure
union globus_ftp_control_dcau_u
control dcau union
union globus_ftp_control_layout_u
control striping attribute union
union globus_ftp_control_parallelism_u
control parallelism attribute structure
struct globus_ftp_control_tcpbuffer_default_t
Don't change the TCP buffer/window size from the system default.
struct globus_ftp_control_tcpbuffer_fixed_t
Set the TCP buffer/window size to a fixed value.
struct globus_ftp_control_tcpbuffer_automatic_s
Automatically set the TCP buffer/window size.
union globus_ftp_control_tcpbuffer_t
control tcpbuffer attribute structure
struct globus_ftp_control_auth_info_s
Authentication Values.

Defines

#define GLOBUS_FTP_CONTROL_MODULE (&globus_i_ftp_control_module)

Typedefs

typedef enum globus_ftp_control_type_e globus_ftp_control_type_t

typedef enum globus_ftp_control_mode_e globus_ftp_control_mode_t

typedef enum globus_ftp_control_dcau_mode_e globus_ftp_control_dcau_mode_t

typedef struct globus_ftp_control_dcau_subject_s globus_ftp_control_dcau_subject_t

typedef enum globus_ftp_control_striping_mode_e globus_ftp_control_striping_mode_t

typedef struct globus_ftp_control_round_robin_s globus_ftp_control_round_robin_t

typedef union globus_ftp_control_dcau_u globus_ftp_control_dcau_t

typedef union globus_ftp_control_layout_u globus_ftp_control_layout_t

typedef enum globus_ftp_control_structure_e globus_ftp_control_structure_t

typedef enum globus_ftp_control_parallelism_mode_e globus_ftp_control_parallelism_mode_t

typedef union globus_ftp_control_parallelism_u globus_ftp_control_parallelism_t

typedef enum globus_ftp_control_tcpbuffer_mode_e globus_ftp_control_tcpbuffer_mode_t

typedef struct globus_ftp_control_tcpbuffer_automatic_s globus_ftp_control_tcpbuffer_automatic_t

typedef union globus_ftp_control_tcpbuffer_t globus_ftp_control_tcpbuffer_t

typedef struct globus_ftp_control_auth_info_s globus_ftp_control_auth_info_t

typedef void(* globus_ftp_control_response_callback_t )(void *callback_arg, struct globus_ftp_control_handle_s *handle, globus_object_t *error, globus_ftp_control_response_t *ftp_response)

typedef void(* globus_ftp_control_callback_t )(void *callback_arg, struct globus_ftp_control_handle_s *handle, globus_object_t *error)

typedef void(* globus_ftp_control_command_callback_t )(void *callback_arg, struct globus_ftp_control_handle_s *handle, globus_object_t *error, union globus_ftp_control_command_u *command)

typedef void(* globus_ftp_control_auth_callback_t )(void *callback_arg, struct globus_ftp_control_handle_s *handle, globus_object_t *error, globus_ftp_control_auth_info_t *auth_result)

typedef unsigned long globus_ftp_control_auth_requirements_t

typedef void(* globus_ftp_control_data_callback_t )(void *callback_arg, globus_ftp_control_handle_t *handle, globus_object_t *error, globus_byte_t *buffer, globus_size_t length, globus_off_t offset, globus_bool_t eof)

typedef void(* globus_ftp_control_server_callback_t )(void *callback_arg, struct globus_ftp_control_server_s *server_handle, globus_object_t *error)

Enumerations

enum globus_ftp_control_type_e

enum globus_ftp_control_mode_e

enum globus_ftp_control_dcau_mode_e

enum globus_ftp_control_striping_mode_e

enum globus_ftp_control_protection_t

enum globus_ftp_control_delay_passive_t

enum globus_ftp_control_structure_e

enum globus_ftp_control_parallelism_mode_e

enum globus_ftp_control_tcpbuffer_mode_e { GLOBUS_FTP_CONTROL_TCPBUFFER_DEFAULT, GLOBUS_FTP_CONTROL_TCPBUFFER_FIXED, GLOBUS_FTP_CONTROL_TCPBUFFER_AUTOMATIC }

Functions

globus_result_t globus_ftp_control_local_layout (globus_ftp_control_handle_t *handle, globus_ftp_control_layout_t *layout, globus_size_t data_size)

globus_result_t globus_ftp_control_data_set_interface (globus_ftp_control_handle_t *handle, const char *interface_addr)

globus_result_t globus_ftp_control_create_data_info (globus_ftp_control_handle_t *handle, globus_ftp_control_data_write_info_t *data_info, globus_byte_t *buffer, globus_size_t length, globus_off_t offset, globus_bool_t eof, globus_ftp_control_data_callback_t callback, void *callback_arg)

globus_result_t globus_ftp_control_release_data_info (globus_ftp_control_handle_t *handle, globus_ftp_control_data_write_info_t *data_info)

globus_result_t globus_ftp_control_data_write_stripe (globus_ftp_control_handle_t *handle, globus_byte_t *buffer, globus_size_t length, globus_off_t offset, globus_bool_t eof, int stripe_ndx, globus_ftp_control_data_callback_t callback, void *callback_arg)

globus_result_t globus_X_ftp_control_data_write_stripe (globus_ftp_control_handle_t *handle, globus_byte_t *buffer, globus_size_t length, globus_off_t offset, globus_bool_t eof, int stripe_ndx, globus_ftp_control_data_write_info_t *data_info)

Detailed Description

GSIFTP Control Connection API (Data structures and types).

Define Documentation

#define GLOBUS_FTP_CONTROL_MODULE (&globus_i_ftp_control_module)

Module descriptor. The Globus FTP Control library uses the standard module activation and deactivation API to initialize it's state. Before any GSIFTP functions are called, the module must be activated

     globus_module_activate(GLOBUS_GSIFTP_CONTROL_MODULE);
 

This function returns GLOBUS_SUCCESS if the GSIFTP library was successfully initialized. This may be called multiple times.

To deactivate the GSIFTP library, the following must be called

     globus_module_deactivate(GLOBUS_GSIFTP_CONTROL_MODULE);
 

 

Typedef Documentation

typedef enum globus_ftp_control_type_e globus_ftp_control_type_t

control structure types. The enumeration values match the character value of the argument to TYPE.

typedef enum globus_ftp_control_mode_e globus_ftp_control_mode_t

control structure mode

typedef enum globus_ftp_control_dcau_mode_e globus_ftp_control_dcau_mode_t

control dcau types

typedef struct globus_ftp_control_dcau_subject_s globus_ftp_control_dcau_subject_t

control dcau subject authentication type

typedef enum globus_ftp_control_striping_mode_e globus_ftp_control_striping_mode_t

control striping Types

typedef struct globus_ftp_control_round_robin_s globus_ftp_control_round_robin_t

control striping round robin attribute structure

typedef union globus_ftp_control_dcau_u globus_ftp_control_dcau_t

control dcau union

typedef union globus_ftp_control_layout_u globus_ftp_control_layout_t

control striping attribute union

typedef enum globus_ftp_control_structure_e globus_ftp_control_structure_t

control structure structure

typedef enum globus_ftp_control_parallelism_mode_e globus_ftp_control_parallelism_mode_t

control parallelism Types

typedef union globus_ftp_control_parallelism_u globus_ftp_control_parallelism_t

control parallelism attribute structure

typedef enum globus_ftp_control_tcpbuffer_mode_e globus_ftp_control_tcpbuffer_mode_t

TCP Buffer Setting Modes.

typedef struct globus_ftp_control_tcpbuffer_automatic_s globus_ftp_control_tcpbuffer_automatic_t

Automatically set the TCP buffer/window size.

typedef union globus_ftp_control_tcpbuffer_t globus_ftp_control_tcpbuffer_t

control tcpbuffer attribute structure

typedef struct globus_ftp_control_auth_info_s

 globus_ftp_control_auth_info_t"

Authentication Values. This structure is populated and passed back to the user via the globus_ftp_control_auth_callback_t(). It contains the information needed to decide if a client may use the server.

typedef void(* globus_ftp_control_response_callback_t)(void *callback_arg, struct globus_ftp_control_handle_s *handle, globus_object_t *error, globus_ftp_control_response_t *ftp_response)

Asynchronous operation completion callback. This callback is called whenever a reply to command is received on the FTP control channel. It allows the user to handle the received reply or alternatively handle any errors that occurred during the interaction with the FTP server. This function will be called multiple times in the case when intermediate responses (1yz) are received.

Parameters:

callback_arg User supplied argument to the callback function
handle A pointer to the GSIFTP control handle. Used to identify which control connection the operation was applied to.
error Pointer to a globus error object containing information about any errors that occurred processing the operation
ftp_response Pointer to a response structure containing the FTP response to the command.

typedef void(* globus_ftp_control_callback_t)(void *callback_arg, struct globus_ftp_control_handle_s *handle, globus_object_t *error)

Asynchronous control callback. This callback is used as a generic control operation callback.

Parameters:

callback_arg User supplied argument to the callback function
handle A pointer to the GSIFTP control handle. Used to identify which control connection the operation was applied to.
error Pointer to a globus error object containing information about any errors that occurred processing the operation

typedef void(* globus_ftp_control_command_callback_t)(void *callback_arg, struct globus_ftp_control_handle_s *handle, globus_object_t *error, union globus_ftp_control_command_u *command)

Server command callback. When a command from a client is received on the control channel a user callback with this signature is called.

Parameters:

callback_arg The user argument passed to the callback function.
handle The control handle that the command was issued on.
error Indicates if a command was successful read or or if a failure occurred. This object will be freed once this callback returns. If the user wishes to have a copy of the error that persists past the life of this callback, they must make a copy using globus_object_copy(), and free it with globus_object_free().
command The command structure indicates what type of command the client issued. Based on the 'type' further information can be extracted. This command structure will be freed once this callback returns. If the user wishes to have a copy of the error that persists past the life of this callback, they must make a copy using globus_ftp_control_command_copy(), and free it with globus_ftp_control_command_free().

typedef void(* globus_ftp_control_auth_callback_t)(void *callback_arg, struct globus_ftp_control_handle_s *handle, globus_object_t *error, globus_ftp_control_auth_info_t *auth_result)

Server authentication complete callback. A function with this signature is registered by calling globus_ftp_control_accept(). It is called when the authentication protocal has completed. Based on the auth_result, the server implementor should determine authorization and then send the appropriate response using globus_ftp_control_send_response(), indicating to the client whether authorization was successful or not.

Parameters:

handle This structure is populated when the callback is called and represents a control connection to the client.
auth_result A globus_ftp_control_auth_result_t containing the values the client sent for gss authentication, user name, password and account. If any of the values were not sent by the client they will be NULL. Based on that information the user can decide if the client will be authorized for use of the server.
callback_arg The user argument passed to the callback.

typedef unsigned long globus_ftp_control_auth_requirements_t

Authentication requirements. The value of this should be a bitwise or of

*

GLOBUS_FTP_CONTROL_AUTH_NONE

*

GLOBUS_FTP_CONTROL_AUTH_GSSAPI

*

GLOBUS_FTP_CONTROL_AUTH_USER

*

GLOBUS_FTP_CONTROL_AUTH_PASS

*

GLOBUS_FTP_CONTROL_AUTH_ACCT

typedef void(* globus_ftp_control_data_callback_t)(void *callback_arg, globus_ftp_control_handle_t *handle, globus_object_t *error, globus_byte_t *buffer, globus_size_t length, globus_off_t offset, globus_bool_t eof)

Asynchronous data transmission operation callback. This callback is called in functions that send or receive data on the data channel(s).

In the case of a write, this function is invoked when the entire data buffer is sent. Depending on the data transfer properties set by the globus_ftp_control_local_*() functions, the data may actually be split into multiple buffers and sent to multiple data nodes.

In the case of a read, this function will return a single extent of the data. The order of the data returned is not defined in an extended block mode data transfer. It is up to the user of the API to re-construct the file order.

Parameters:

callback_arg User supplied argument to the callback function
handle A pointer to the GSIFTP control handle. Used to identify which control connection the operation was applied to.
error Pointer to a globus error object containing information about any errors that occurred processing the operation
buffer The user buffer passed as a parameter to globus_ftp_control_data_read() or globus_ftp_control_data_write().
length The amount of data in the buffer. In the case of an incoming data channel, this may be less than the buffer size.
offset The file offset of the data which is contained in the buffer.
eof This is set to GLOBUS_TRUE then all of the data associated with the transfer has arrived on the data connections associated with this handle. If multiple data callbacks are registered with this handle, there is no guaranteed order of the EOF callback with respect to other data callbacks. If multiple callbacks are registered when EOF is reached on the data connections, at least one callback function will be called with eof set to GLOBUS_TRUE.

typedef void(* globus_ftp_control_server_callback_t)(void *callback_arg, struct globus_ftp_control_server_s *server_handle, globus_object_t *error)

Server callback. A functions with this signature can be used as general callbacks for the GSIFTP server API.

Parameters:

server_handle The server handle associated with callback.
result Indicates if the operation completed successfully or if a failure occurred.
callback_arg The user argument passed to the callback function.

Enumeration Type Documentation

enum globus_ftp_control_type_e

control structure types. The enumeration values match the character value of the argument to TYPE.

enum globus_ftp_control_mode_e

control structure mode

enum globus_ftp_control_dcau_mode_e

control dcau types

enum globus_ftp_control_striping_mode_e

control striping Types

enum globus_ftp_control_protection_t

control protection levels

enum globus_ftp_control_delay_passive_t

delayed passive flags

enum globus_ftp_control_structure_e

control structure structure

enum globus_ftp_control_parallelism_mode_e

control parallelism Types

enum globus_ftp_control_tcpbuffer_mode_e

TCP Buffer Setting Modes.

Enumerator:

GLOBUS_FTP_CONTROL_TCPBUFFER_DEFAULT

Don't change the TCP buffer/window size from the system default.

GLOBUS_FTP_CONTROL_TCPBUFFER_FIXED

Set the TCP buffer/window size to a fixed value.

GLOBUS_FTP_CONTROL_TCPBUFFER_AUTOMATIC

Automatically set the TCP buffer/window size.

Function Documentation

globus_result_t globus_ftp_control_local_layout (globus_ftp_control_handle_t * handle, globus_ftp_control_layout_t * layout, globus_size_t data_size)

Update the handle with the layout and the size of the data sent over the data channel. This function is deprecated. The interface will be the changed to that of globus_X_ftp_control_local_layout()

Parameters:

handle A pointer to the FTP control handle into which to insert the layout information.
layout A variable containing the layout information
data_size The size of the data that is going to be sent. This may be needed to interpret the layout information.

References GLOBUS_FTP_CONTROL_MODULE.

globus_result_t globus_ftp_control_data_set_interface (globus_ftp_control_handle_t * handle, const char * interface_addr)

Create an outgoing FTP data connection. This function sets the interface that will be used to send and receive information along the data channel.

Parameters:

handle A pointer to a FTP control handle which is configured to create an outgoing data connection.
interface_addr

References GLOBUS_FTP_CONTROL_MODULE.

globus_result_t globus_ftp_control_create_data_info (globus_ftp_control_handle_t * handle, globus_ftp_control_data_write_info_t * data_info, globus_byte_t * buffer, globus_size_t length, globus_off_t offset, globus_bool_t eof, globus_ftp_control_data_callback_t callback, void * callback_arg)

Create a globus_ftp_control_data_write_info_t structure. This funciton populates a globus_ftp_control_data_callback_t structure with valid information. This structure provides the user a way to register several data writes with a single callback. This is quite useful to the writter of enqueue functions. It allows a single call to globus_ftp_control_data_write() to be broken up into many writes, potentially on different stripes, and for a single callback to be called when all are finished.

Parameters:

handle A pointer to a FTP control handle. The handle contains information about the current state of the control and data connections.
data_info The globus_ftp_control_data_write_info_t structure to be released.
buffer The pointer to the user buffer that will be passed to the callback argument when there are zero references to data_info. This is intended to be the start of all the data the user intends to write using globus_ftp_control_data_write_stripe(), but it does not have to be.
length The length of the memory segment pointed to by the argument buffer.
offset The file offset of the data segment specified.
eof This should be set to true if the user plans on registering eof on the data_info structure.
callback The user function to be called when all references to data_info are released. This occurs after all data registered for write from globus_ftp_control_data_write_stripe have occured and the user calls globus_ftp_control_release_data_info(). The callback is passed all of the arguments passed to this function with the exception of data_info.
callback_arg User supplied argument to the callback function

References GLOBUS_FTP_CONTROL_MODULE.

globus_result_t globus_ftp_control_release_data_info (globus_ftp_control_handle_t * handle, globus_ftp_control_data_write_info_t * data_info)

Release a data_info structure. This function releases all memory and references created when a call to globus_ftp_control_create_data_info() was made. For every call to globus_ftp_control_create_data_info() a call to this function must be made.

Parameters:

handle A pointer to a FTP control handle. The handle contains information about the current state of the control and data connections.
data_info The globus_ftp_control_data_write_info_t structure to be released.

References GLOBUS_FTP_CONTROL_MODULE.

globus_result_t globus_ftp_control_data_write_stripe (globus_ftp_control_handle_t * handle, globus_byte_t * buffer, globus_size_t length, globus_off_t offset, globus_bool_t eof, int stripe_ndx, globus_ftp_control_data_callback_t callback, void * callback_arg)

Write FTP data to a particular stripe. This function allows the user to write to a specified stripe. The stripe index relates to the order passsed into local_spor(). This function differs from globus_ftp_control_data_write() in that no enqueue function is needed since the user specifies the stripe on which data is written. In order to use this function the user must have a valid pointer to a globus_ftp_control_data_write_info_t structure. The data_info structure can be obtained by a call to globus_ftp_control_create_data_info(). Many calls to this function can be made, but only a single user callback occurs per creation of a globus_ftp_control_data_write_info_t structure.

Parameters:

handle A pointer to a FTP control handle. The handle contains information about the current state of the control and data connections.
buffer a pointer to the data the user wishes to send along the FTP data channels.
length the length of the data pointer to by the parameter buffer.
offset the offset into the file of the data.
eof A boolean stating that this will be the last chuck of data registered on the given stripe. In order to properly send an eof message the user must register an eof on every stripe.
stripe_ndx The index of the stripe on which the data will be sent. The index of each stripe is determined by the call to local_spas or local_spor.
callback The function to be called once the data has been sent
callback_arg User supplied argument to the callback function

References GLOBUS_FTP_CONTROL_MODULE.

globus_result_t globus_X_ftp_control_data_write_stripe (globus_ftp_control_handle_t * handle, globus_byte_t * buffer, globus_size_t length, globus_off_t offset, globus_bool_t eof, int stripe_ndx, globus_ftp_control_data_write_info_t * data_info)

Write data on a specific stripe from an enqueue callback function only. This function allows the user to register the write of ftp data on a specfic stripe. This function can only be called fromed an enqueue function callback. This function should be used only by the implementor of an enqueue funciton. It should be viewed as unstable and used used only by advanced users. This is the only function in the library that the enqueue function implemtor is allowed from the enqueue callback.

Parameters:

handle A pointer to a FTP control handle. The handle contains information about the current state of the control and data connections.
buffer a pointer to the data the user wishes to send along the FTP data channels.
length the length of the data pointer to by the parameter buffer.
offset the offset into the file of the data.
eof a boolean stating that this is the last buffer to be registered. When using the _X_ version of this function the user does not need to register an eof on each stripe, the control library will take care of that internally.
stripe_ndx The index of the stripe on which the data will be sent. The index of each stripe is determined by the call to local_spas or local_spor.
data_info An opaque structure that is passed into the enqueue function and contains reference count and state information. The same data_info pointer that is passed into the enqueue function must be used for this parameter.

References GLOBUS_FTP_CONTROL_MODULE.

Author

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