libsvn_ra_svn functions used by the server More...

#include <apr.h>
#include <apr_pools.h>
#include <apr_hash.h>
#include <apr_tables.h>
#include <apr_file_io.h>
#include <apr_network_io.h>
#include "svn_types.h"
#include "svn_string.h"
#include "svn_config.h"
#include "svn_delta.h"

Data Structures
struct	svn_ra_svn_cmd_entry_t
	Command table, used by svn_ra_svn_handle_commands(). More...
struct	svn_ra_svn_item_t
	Memory representation of an on-the-wire data item. More...
Defines
#define	SVN_RA_SVN_PORT 3690
	The well-known svn port number.
#define	SVN_RA_SVN_CAP_EDIT_PIPELINE "edit-pipeline"
	Currently-defined capabilities.
#define	SVN_RA_SVN_CAP_SVNDIFF1 "svndiff1"
#define	SVN_RA_SVN_CAP_ABSENT_ENTRIES "absent-entries"
#define	SVN_RA_SVN_CAP_COMMIT_REVPROPS "commit-revprops"
#define	SVN_RA_SVN_CAP_MERGEINFO "mergeinfo"
#define	SVN_RA_SVN_CAP_DEPTH "depth"
#define	SVN_RA_SVN_CAP_LOG_REVPROPS "log-revprops"
#define	SVN_RA_SVN_CAP_PARTIAL_REPLAY "partial-replay"
#define	SVN_RA_SVN_CAP_ATOMIC_REVPROPS "atomic-revprops"
#define	SVN_RA_SVN_DIRENT_KIND "kind"
	The ra_svn way of saying `SVN_DIRENT_KIND`.
#define	SVN_RA_SVN_DIRENT_SIZE "size"
	The ra_svn way of saying `SVN_DIRENT_SIZE`.
#define	SVN_RA_SVN_DIRENT_HAS_PROPS "has-props"
	The ra_svn way of saying `SVN_DIRENT_HAS_PROPS`.
#define	SVN_RA_SVN_DIRENT_CREATED_REV "created-rev"
	The ra_svn way of saying `SVN_DIRENT_CREATED_REV`.
#define	SVN_RA_SVN_DIRENT_TIME "time"
	The ra_svn way of saying `SVN_DIRENT_TIME`.
#define	SVN_RA_SVN_DIRENT_LAST_AUTHOR "last-author"
	The ra_svn way of saying `SVN_DIRENT_LAST_AUTHOR`.
#define	SVN_RA_SVN_UNSPECIFIED_NUMBER ~((apr_uint64_t) 0)
	A value used to indicate an optional number element in a tuple that was not received.
#define	SVN_CMD_ERR(expr)
	A specialized form of `SVN_ERR` to deal with errors which occur in an svn_ra_svn_command_handler().
Typedefs
typedef struct svn_ra_svn_conn_st	svn_ra_svn_conn_t
	an ra_svn connection.
typedef svn_error_t (	svn_ra_svn_command_handler )(svn_ra_svn_conn_t conn, apr_pool_t pool, apr_array_header_t params, void baton)
	Command handler, used by svn_ra_svn_handle_commands().
typedef struct svn_ra_svn_cmd_entry_t	svn_ra_svn_cmd_entry_t
	Command table, used by svn_ra_svn_handle_commands().
typedef struct svn_ra_svn_item_t	svn_ra_svn_item_t
	Memory representation of an on-the-wire data item.
typedef svn_error_t (	svn_ra_svn_edit_callback )(void *baton)
Functions
svn_ra_svn_conn_t *	svn_ra_svn_create_conn2 (apr_socket_t sock, apr_file_t in_file, apr_file_t out_file, int compression_level, apr_pool_t pool)
	Initialize a connection structure for the given socket or input/output files.
svn_ra_svn_conn_t *	svn_ra_svn_create_conn (apr_socket_t sock, apr_file_t in_file, apr_file_t out_file, apr_pool_t pool)
	Similar to svn_ra_svn_create_conn2() but uses default compression level (SVN_DELTA_COMPRESSION_LEVEL_DEFAULT) for network transmissions.
svn_error_t *	svn_ra_svn_set_capabilities (svn_ra_svn_conn_t conn, const apr_array_header_t list)
	Add the capabilities in list to conn's capabilities.
svn_boolean_t	svn_ra_svn_has_capability (svn_ra_svn_conn_t conn, const char capability)
	Return `TRUE` if conn has the capability capability, or `FALSE` if it does not.
int	svn_ra_svn_compression_level (svn_ra_svn_conn_t *conn)
	Return the data compression level to use for network transmissions.
const char *	svn_ra_svn_conn_remote_host (svn_ra_svn_conn_t *conn)
	Returns the remote address of the connection as a string, if known, or NULL if inapplicable.
svn_error_t *	svn_ra_svn_write_number (svn_ra_svn_conn_t conn, apr_pool_t pool, apr_uint64_t number)
	Write a number over the net.
svn_error_t *	svn_ra_svn_write_string (svn_ra_svn_conn_t conn, apr_pool_t pool, const svn_string_t *str)
	Write a string over the net.
svn_error_t *	svn_ra_svn_write_cstring (svn_ra_svn_conn_t conn, apr_pool_t pool, const char *s)
	Write a cstring over the net.
svn_error_t *	svn_ra_svn_write_word (svn_ra_svn_conn_t conn, apr_pool_t pool, const char *word)
	Write a word over the net.
svn_error_t *	svn_ra_svn_write_proplist (svn_ra_svn_conn_t conn, apr_pool_t pool, apr_hash_t *props)
	Write a list of properties over the net.
svn_error_t *	svn_ra_svn_start_list (svn_ra_svn_conn_t conn, apr_pool_t pool)
	Begin a list.
svn_error_t *	svn_ra_svn_end_list (svn_ra_svn_conn_t conn, apr_pool_t pool)
	End a list.
svn_error_t *	svn_ra_svn_flush (svn_ra_svn_conn_t conn, apr_pool_t pool)
	Flush the write buffer.
svn_error_t *	svn_ra_svn_write_tuple (svn_ra_svn_conn_t conn, apr_pool_t pool, const char *fmt,...)
	Write a tuple, using a printf-like interface.
svn_error_t *	svn_ra_svn_read_item (svn_ra_svn_conn_t conn, apr_pool_t pool, svn_ra_svn_item_t **item)
	Read an item from the network into *item.
svn_error_t *	svn_ra_svn_skip_leading_garbage (svn_ra_svn_conn_t conn, apr_pool_t pool)
	Scan data on conn until we find something which looks like the beginning of an svn server greeting (an open paren followed by a whitespace character).
svn_error_t *	svn_ra_svn_parse_tuple (const apr_array_header_t list, apr_pool_t pool, const char *fmt,...)
	Parse an array of `svn_sort__item_t` structures as a tuple, using a printf-like interface.
svn_error_t *	svn_ra_svn_read_tuple (svn_ra_svn_conn_t conn, apr_pool_t pool, const char *fmt,...)
	Read a tuple from the network and parse it as a tuple, using the format string notation from svn_ra_svn_parse_tuple().
svn_error_t *	svn_ra_svn_parse_proplist (const apr_array_header_t list, apr_pool_t pool, apr_hash_t **props)
	Parse an array of `svn_ra_svn_item_t` structures as a list of properties, storing the properties in a hash table.
svn_error_t *	svn_ra_svn_read_cmd_response (svn_ra_svn_conn_t conn, apr_pool_t pool, const char *fmt,...)
	Read a command response from the network and parse it as a tuple, using the format string notation from svn_ra_svn_parse_tuple().
svn_error_t *	svn_ra_svn_handle_commands2 (svn_ra_svn_conn_t conn, apr_pool_t pool, const svn_ra_svn_cmd_entry_t commands, void baton, svn_boolean_t error_on_disconnect)
	Accept commands over the network and handle them according to commands.
svn_error_t *	svn_ra_svn_handle_commands (svn_ra_svn_conn_t conn, apr_pool_t pool, const svn_ra_svn_cmd_entry_t commands, void baton)
	Similar to svn_ra_svn_handle_commands2 but error_on_disconnect is always `FALSE`.
svn_error_t *	svn_ra_svn_write_cmd (svn_ra_svn_conn_t conn, apr_pool_t pool, const char cmdname, const char fmt,...)
	Write a command over the network, using the same format string notation as svn_ra_svn_write_tuple().
svn_error_t *	svn_ra_svn_write_cmd_response (svn_ra_svn_conn_t conn, apr_pool_t pool, const char *fmt,...)
	Write a successful command response over the network, using the same format string notation as svn_ra_svn_write_tuple().
svn_error_t *	svn_ra_svn_write_cmd_failure (svn_ra_svn_conn_t conn, apr_pool_t pool, svn_error_t *err)
	Write an unsuccessful command response over the network.
void	svn_ra_svn_get_editor (const svn_delta_editor_t editor, void edit_baton, svn_ra_svn_conn_t conn, apr_pool_t pool, svn_ra_svn_edit_callback callback, void *callback_baton)
	Set editor and edit_baton to an editor which will pass editing operations over the network, using conn and pool.
svn_error_t *	svn_ra_svn_drive_editor2 (svn_ra_svn_conn_t conn, apr_pool_t pool, const svn_delta_editor_t editor, void edit_baton, svn_boolean_t *aborted, svn_boolean_t for_replay)
	Receive edit commands over the network and use them to drive editor with edit_baton.
svn_error_t *	svn_ra_svn_drive_editor (svn_ra_svn_conn_t conn, apr_pool_t pool, const svn_delta_editor_t editor, void edit_baton, svn_boolean_t *aborted)
	Like svn_ra_svn_drive_editor2, but with for_replay always FALSE.
svn_error_t *	svn_ra_svn_cram_server (svn_ra_svn_conn_t conn, apr_pool_t pool, svn_config_t pwdb, const char user, svn_boolean_t success)
	This function is only intended for use by svnserve.
const svn_version_t *	svn_ra_svn_version (void)
	Get libsvn_ra_svn version information.

Detailed Description

libsvn_ra_svn functions used by the server

Definition in file svn_ra_svn.h.

Define Documentation

#define SVN_CMD_ERR ( expr )

Value:

do {                                                        \
    svn_error_t *svn_err__temp = (expr);                      \
    if (svn_err__temp)                                        \
      return svn_error_create(SVN_ERR_RA_SVN_CMD_ERR,         \
                              svn_err__temp, NULL);           \
  } while (0)

A specialized form of SVN_ERR to deal with errors which occur in an svn_ra_svn_command_handler().

An error returned with this macro will be passed back to the other side of the connection. Use this macro when performing the requested operation; use the regular SVN_ERR when performing I/O with the client.

Definition at line 105 of file svn_ra_svn.h.

#define SVN_RA_SVN_CAP_EDIT_PIPELINE "edit-pipeline"

Currently-defined capabilities.

Definition at line 50 of file svn_ra_svn.h.

#define SVN_RA_SVN_PORT 3690

The well-known svn port number.

Definition at line 47 of file svn_ra_svn.h.

Typedef Documentation

typedef svn_error_t*(* svn_ra_svn_command_handler)(svn_ra_svn_conn_t *conn, apr_pool_t *pool, apr_array_header_t *params, void *baton)

Command handler, used by svn_ra_svn_handle_commands().

Definition at line 117 of file svn_ra_svn.h.

typedef struct svn_ra_svn_conn_st svn_ra_svn_conn_t

an ra_svn connection.

Definition at line 114 of file svn_ra_svn.h.

typedef struct svn_ra_svn_item_t svn_ra_svn_item_t

Memory representation of an on-the-wire data item.

Function Documentation

int svn_ra_svn_compression_level ( svn_ra_svn_conn_t * conn )

Return the data compression level to use for network transmissions.

Since:: New in 1.7.

const char* svn_ra_svn_conn_remote_host ( svn_ra_svn_conn_t * conn )

Returns the remote address of the connection as a string, if known, or NULL if inapplicable.

svn_error_t* svn_ra_svn_cram_server	(	svn_ra_svn_conn_t *	conn,
		apr_pool_t *	pool,
		svn_config_t *	pwdb,
		const char **	user,
		svn_boolean_t *	success
	)

This function is only intended for use by svnserve.

Perform CRAM-MD5 password authentication. On success, return SVN_NO_ERROR with *user set to the username and *success set to TRUE. On an error which can be reported to the client, report the error and return SVN_NO_ERROR with *success set to FALSE. On communications failure, return an error.

svn_ra_svn_conn_t* svn_ra_svn_create_conn	(	apr_socket_t *	sock,
		apr_file_t *	in_file,
		apr_file_t *	out_file,
		apr_pool_t *	pool
	)

Similar to svn_ra_svn_create_conn2() but uses default compression level (SVN_DELTA_COMPRESSION_LEVEL_DEFAULT) for network transmissions.

Deprecated:: Provided for backward compatibility with the 1.6 API.

svn_ra_svn_conn_t* svn_ra_svn_create_conn2	(	apr_socket_t *	sock,
		apr_file_t *	in_file,
		apr_file_t *	out_file,
		int	compression_level,
		apr_pool_t *	pool
	)

Initialize a connection structure for the given socket or input/output files.

Either sock or in_file/out_file must be set, not both. Specify the desired network data compression level (zlib) from 0 (no compression) to 9 (best but slowest).

Since:: New in 1.7.

svn_error_t* svn_ra_svn_drive_editor2	(	svn_ra_svn_conn_t *	conn,
		apr_pool_t *	pool,
		const svn_delta_editor_t *	editor,
		void *	edit_baton,
		svn_boolean_t *	aborted,
		svn_boolean_t	for_replay
	)

Receive edit commands over the network and use them to drive editor with edit_baton.

On return, *aborted will be set if the edit was aborted. The drive can be terminated with a finish-replay command only if for_replay is TRUE.

svn_error_t* svn_ra_svn_end_list	(	svn_ra_svn_conn_t *	conn,
		apr_pool_t *	pool
	)

End a list.

Writes will be buffered until the next read or flush.

svn_error_t* svn_ra_svn_flush	(	svn_ra_svn_conn_t *	conn,
		apr_pool_t *	pool
	)

Flush the write buffer.

Normally this shouldn't be necessary, since the write buffer is flushed when a read is attempted.

void svn_ra_svn_get_editor	(	const svn_delta_editor_t **	editor,
		void **	edit_baton,
		svn_ra_svn_conn_t *	conn,
		apr_pool_t *	pool,
		svn_ra_svn_edit_callback	callback,
		void *	callback_baton
	)

Set *editor and *edit_baton to an editor which will pass editing operations over the network, using conn and pool.

Upon successful completion of the edit, the editor will invoke callback with callback_baton as an argument.

svn_error_t* svn_ra_svn_handle_commands	(	svn_ra_svn_conn_t *	conn,
		apr_pool_t *	pool,
		const svn_ra_svn_cmd_entry_t *	commands,
		void *	baton
	)

Similar to svn_ra_svn_handle_commands2 but error_on_disconnect is always FALSE.

Deprecated:: Provided for backward compatibility with the 1.5 API.

svn_error_t* svn_ra_svn_handle_commands2	(	svn_ra_svn_conn_t *	conn,
		apr_pool_t *	pool,
		const svn_ra_svn_cmd_entry_t *	commands,
		void *	baton,
		svn_boolean_t	error_on_disconnect
	)

Accept commands over the network and handle them according to commands.

Command handlers will be passed conn, a subpool of pool (cleared after each command is handled), the parameters of the command, and baton. Commands will be accepted until a terminating command is received (a command with "terminate" set in the command table). If a command handler returns an error wrapped in SVN_RA_SVN_CMD_ERR (see the SVN_CMD_ERR macro), the error will be reported to the other side of the connection and the command loop will continue; any other kind of error (typically a network or protocol error) is passed through to the caller.

Since:: New in 1.6.

svn_boolean_t svn_ra_svn_has_capability	(	svn_ra_svn_conn_t *	conn,
		const char *	capability
	)

Return TRUE if conn has the capability capability, or FALSE if it does not.

svn_error_t* svn_ra_svn_parse_proplist	(	const apr_array_header_t *	list,
		apr_pool_t *	pool,
		apr_hash_t **	props
	)

Parse an array of svn_ra_svn_item_t structures as a list of properties, storing the properties in a hash table.

Since:: New in 1.5.

svn_error_t* svn_ra_svn_parse_tuple	(	const apr_array_header_t *	list,
		apr_pool_t *	pool,
		const char *	fmt,
			...
	)

Parse an array of svn_sort__item_t structures as a tuple, using a printf-like interface.

The format string fmt may contain:

     Spec  Argument type          Item type
     ----  --------------------   ---------
     n     apr_uint64_t *         Number
     r     svn_revnum_t *         Number
     s     svn_string_t **        String
     c     const char **          String
     w     const char **          Word
     b     svn_boolean_t *        Word ("true" or "false")
     B     apr_uint64_t *         Word ("true" or "false")
     l     apr_array_header_t **  List
     (                            Begin tuple
     )                            End tuple
     ?                            Tuple is allowed to end here

Note that a tuple is only allowed to end precisely at a '?', or at the end of the specification. So if fmt is "c?cc" and list contains two elements, an error will result.

'B' is similar to 'b', but may be used in the optional tuple specification. It returns TRUE, FALSE, or SVN_RA_SVN_UNSPECIFIED_NUMBER.

If an optional part of a tuple contains no data, 'r' values will be set to SVN_INVALID_REVNUM, 'n' and 'B' values will be set to SVN_RA_SVN_UNSPECIFIED_NUMBER, and 's', 'c', 'w', and 'l' values will be set to NULL. 'b' may not appear inside an optional tuple specification; use 'B' instead.

svn_error_t* svn_ra_svn_read_item	(	svn_ra_svn_conn_t *	conn,
		apr_pool_t *	pool,
		svn_ra_svn_item_t **	item
	)

Read an item from the network into *item.

svn_error_t* svn_ra_svn_set_capabilities	(	svn_ra_svn_conn_t *	conn,
		const apr_array_header_t *	list
	)

Add the capabilities in list to conn's capabilities.

list contains svn_ra_svn_item_t entries (which should be of type SVN_RA_SVN_WORD; a malformed data error will result if any are not).

This is idempotent: if a given capability was already set for conn, it remains set.

svn_error_t* svn_ra_svn_skip_leading_garbage	(	svn_ra_svn_conn_t *	conn,
		apr_pool_t *	pool
	)

Scan data on conn until we find something which looks like the beginning of an svn server greeting (an open paren followed by a whitespace character).

This function is appropriate for beginning a client connection opened in tunnel mode, since people's dotfiles sometimes write output to stdout. It may only be called at the beginning of a client connection.

svn_error_t* svn_ra_svn_start_list	(	svn_ra_svn_conn_t *	conn,
		apr_pool_t *	pool
	)

Begin a list.

Writes will be buffered until the next read or flush.

const svn_version_t* svn_ra_svn_version ( void )

Get libsvn_ra_svn version information.

Since:: New in 1.1.

svn_error_t* svn_ra_svn_write_cmd_failure	(	svn_ra_svn_conn_t *	conn,
		apr_pool_t *	pool,
		svn_error_t *	err
	)

Write an unsuccessful command response over the network.

svn_error_t* svn_ra_svn_write_cmd_response	(	svn_ra_svn_conn_t *	conn,
		apr_pool_t *	pool,
		const char *	fmt,
			...
	)

Write a successful command response over the network, using the same format string notation as svn_ra_svn_write_tuple().

Do not use partial tuples with this function; if you need to use partial tuples, just write out the "success" and argument tuple by hand.

svn_error_t* svn_ra_svn_write_cstring	(	svn_ra_svn_conn_t *	conn,
		apr_pool_t *	pool,
		const char *	s
	)

Write a cstring over the net.

Writes will be buffered until the next read or flush.

svn_error_t* svn_ra_svn_write_number	(	svn_ra_svn_conn_t *	conn,
		apr_pool_t *	pool,
		apr_uint64_t	number
	)

Write a number over the net.

Writes will be buffered until the next read or flush.

svn_error_t* svn_ra_svn_write_proplist	(	svn_ra_svn_conn_t *	conn,
		apr_pool_t *	pool,
		apr_hash_t *	props
	)

Write a list of properties over the net.

props is allowed to be NULL, in which case an empty list will be written out.

Since:: New in 1.5.

svn_error_t* svn_ra_svn_write_string	(	svn_ra_svn_conn_t *	conn,
		apr_pool_t *	pool,
		const svn_string_t *	str
	)

Write a string over the net.

Writes will be buffered until the next read or flush.

svn_error_t* svn_ra_svn_write_tuple	(	svn_ra_svn_conn_t *	conn,
		apr_pool_t *	pool,
		const char *	fmt,
			...
	)

Write a tuple, using a printf-like interface.

The format string fmt may contain:

     Spec  Argument type         Item type
     ----  --------------------  ---------
     n     apr_uint64_t          Number
     r     svn_revnum_t          Number
     s     const svn_string_t *  String
     c     const char *          String
     w     const char *          Word
     b     svn_boolean_t         Word ("true" or "false")
     (                           Begin tuple
     )                           End tuple
     ?                           Remaining elements optional
     ! (at beginning or end)     Suppress opening or closing of tuple

Inside the optional part of a tuple, 'r' values may be SVN_INVALID_REVNUM, 'n' values may be SVN_RA_SVN_UNSPECIFIED_NUMBER, and 's', 'c', and 'w' values may be NULL; in these cases no data will be written. 'b' and '(' may not appear in the optional part of a tuple. Either all or none of the optional values should be valid.

(If we ever have a need for an optional boolean value, we should invent a 'B' specifier which stores a boolean into an int, using -1 for unspecified. Right now there is no need for such a thing.)

Use the '!' format specifier to write partial tuples when you have to transmit an array or other unusual data. For example, to write a tuple containing a revision, an array of words, and a boolean:

     SVN_ERR(svn_ra_svn_write_tuple(conn, pool, "r(!", rev));
     for (i = 0; i < n; i++)
       SVN_ERR(svn_ra_svn_write_word(conn, pool, words[i]));
     SVN_ERR(svn_ra_svn_write_tuple(conn, pool, "!)b", flag));

svn_error_t* svn_ra_svn_write_word	(	svn_ra_svn_conn_t *	conn,
		apr_pool_t *	pool,
		const char *	word
	)

Write a word over the net.

Writes will be buffered until the next read or flush.

Data Structures

Defines

Typedefs

Functions

Detailed Description

Define Documentation

Typedef Documentation

Function Documentation