/usr/include/gwenhywfar4/gwenhywfar/msgengine.h is in libgwenhywfar60-dev 4.12.0beta-3+b1.
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$RCSfile$
-------------------
cvs : $Id$
begin : Fri Jul 04 2003
copyright : (C) 2003 by Martin Preuss
email : martin@libchipcard.de
***************************************************************************
* *
* 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 2.1 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 *
* *
***************************************************************************/
#ifndef GWENHYWFAR_MSGENGINE_H
#define GWENHYWFAR_MSGENGINE_H
#include <gwenhywfar/gwenhywfarapi.h>
#include <gwenhywfar/xml.h>
#include <gwenhywfar/db.h>
#include <gwenhywfar/buffer.h>
#ifdef __cplusplus
extern "C" {
#endif
/** @defgroup MOD_MSGENGINE_ALL Message Engine
* @ingroup MOD_PARSER
*
* This group contains function providing creating and parsing messages
* based on an XML-alike file.
*/
/*@{*/
/** @defgroup MOD_TRUSTDATA Trust Data Handling
*
*/
/*@{*/
typedef struct GWEN_MSGENGINE_TRUSTEDDATA GWEN_MSGENGINE_TRUSTEDDATA;
typedef enum {
GWEN_MsgEngineTrustLevelNone=0,
GWEN_MsgEngineTrustLevelLow,
GWEN_MsgEngineTrustLevelMedium,
GWEN_MsgEngineTrustLevelHigh,
GWEN_MsgEngineTrustLevelFull
} GWEN_MSGENGINE_TRUSTLEVEL;
GWENHYWFAR_API
GWEN_MSGENGINE_TRUSTEDDATA*
GWEN_MsgEngine_TrustedData_new(const char *data,
unsigned int size,
const char *description,
GWEN_MSGENGINE_TRUSTLEVEL trustLevel);
GWENHYWFAR_API
void GWEN_MsgEngine_TrustedData_free(GWEN_MSGENGINE_TRUSTEDDATA *td);
GWENHYWFAR_API
GWEN_MSGENGINE_TRUSTEDDATA*
GWEN_MsgEngine_TrustedData_GetNext(GWEN_MSGENGINE_TRUSTEDDATA *td);
GWENHYWFAR_API
const char*
GWEN_MsgEngine_TrustedData_GetData(GWEN_MSGENGINE_TRUSTEDDATA *td);
GWENHYWFAR_API
unsigned int
GWEN_MsgEngine_TrustedData_GetSize(GWEN_MSGENGINE_TRUSTEDDATA *td);
GWENHYWFAR_API
const char*
GWEN_MsgEngine_TrustedData_GetDescription(GWEN_MSGENGINE_TRUSTEDDATA *td);
GWENHYWFAR_API
GWEN_MSGENGINE_TRUSTLEVEL
GWEN_MsgEngine_TrustedData_GetTrustLevel(GWEN_MSGENGINE_TRUSTEDDATA *td);
GWENHYWFAR_API
const char*
GWEN_MsgEngine_TrustedData_GetReplacement(GWEN_MSGENGINE_TRUSTEDDATA *td);
GWENHYWFAR_API
int GWEN_MsgEngine_TrustedData_AddPos(GWEN_MSGENGINE_TRUSTEDDATA *td,
unsigned int pos);
GWENHYWFAR_API
int GWEN_MsgEngine_TrustedData_GetFirstPos(GWEN_MSGENGINE_TRUSTEDDATA *td);
GWENHYWFAR_API
int GWEN_MsgEngine_TrustedData_GetNextPos(GWEN_MSGENGINE_TRUSTEDDATA *td);
GWENHYWFAR_API
int
GWEN_MsgEngine_TrustedData_CreateReplacements(GWEN_MSGENGINE_TRUSTEDDATA
*td);
/*@}*/ /* defgroup */
#define GWEN_MSGENGINE_SHOW_FLAGS_NOSET 0x0001
#define GWEN_MSGENGINE_MAX_VALUE_LEN 8192
/** @name Read Flags
*/
/*@{*/
#define GWEN_MSGENGINE_READ_FLAGS_TRUSTINFO 0x0001
#define GWEN_MSGENGINE_READ_FLAGS_DEFAULT 0
/*@}*/
/** @defgroup MOD_MSGENGINE Message Engine
*
*/
/*@{*/
typedef struct GWEN__MSGENGINE GWEN_MSGENGINE;
GWEN_INHERIT_FUNCTION_LIB_DEFS(GWEN_MSGENGINE, GWENHYWFAR_API)
/** @name Virtual Functions
*
* A message engine contains some pointers to functions which allow
* extending the functionality of a message engine (like virtual functions
* in C++)
*/
/*@{*/
typedef int (*GWEN_MSGENGINE_TYPEREAD_PTR)(GWEN_MSGENGINE *e,
GWEN_BUFFER *msgbuf,
GWEN_XMLNODE *node,
GWEN_BUFFER *vbuf,
char escapeChar,
const char *delimiters);
/**
* @return 0 on success, -1 on error, 1 if unknown type
*/
typedef int (*GWEN_MSGENGINE_TYPEWRITE_PTR)(GWEN_MSGENGINE *e,
GWEN_BUFFER *gbuf,
GWEN_BUFFER *data,
GWEN_XMLNODE *node);
/**
* Checks of what base-type the given type is.
*/
typedef GWEN_DB_NODE_TYPE (*GWEN_MSGENGINE_TYPECHECK_PTR)(GWEN_MSGENGINE *e,
const char *tname);
typedef int (*GWEN_MSGENGINE_BINTYPEREAD_PTR)(GWEN_MSGENGINE *e,
GWEN_XMLNODE *node,
GWEN_DB_NODE *gr,
GWEN_BUFFER *vbuf);
typedef int (*GWEN_MSGENGINE_BINTYPEWRITE_PTR)(GWEN_MSGENGINE *e,
GWEN_XMLNODE *node,
GWEN_DB_NODE *gr,
GWEN_BUFFER *dbuf);
/**
* Get the value of the given name (or default value if none set)
*/
typedef const char* (*GWEN_MSGENGINE_GETCHARVALUE_PTR)(GWEN_MSGENGINE *e,
const char *name,
const char *defValue);
typedef int (*GWEN_MSGENGINE_GETINTVALUE_PTR)(GWEN_MSGENGINE *e,
const char *name,
int defValue);
typedef GWEN_DB_NODE*
(*GWEN_MSGENGINE_GETGLOBALVALUES_PTR)(GWEN_MSGENGINE *e);
typedef void (*GWEN_MSGENGINE_FREEDATA_PTR)(GWEN_MSGENGINE *e);
/*@}*/
/** @name Constructor And Destructor
*
*/
/*@{*/
GWENHYWFAR_API
GWEN_MSGENGINE *GWEN_MsgEngine_new(void);
GWENHYWFAR_API
void GWEN_MsgEngine_free(GWEN_MSGENGINE *e);
GWENHYWFAR_API
void GWEN_MsgEngine_Attach(GWEN_MSGENGINE *e);
/*@}*/
/** @name Setters And Getters
*
*/
/*@{*/
GWENHYWFAR_API
void GWEN_MsgEngine_SetEscapeChar(GWEN_MSGENGINE *e, char c);
GWENHYWFAR_API
char GWEN_MsgEngine_GetEscapeChar(GWEN_MSGENGINE *e);
GWENHYWFAR_API
void GWEN_MsgEngine_SetCharsToEscape(GWEN_MSGENGINE *e, const char *c);
GWENHYWFAR_API
const char *GWEN_MsgEngine_GetCharsToEscape(GWEN_MSGENGINE *e);
GWENHYWFAR_API
void GWEN_MsgEngine_SetDelimiters(GWEN_MSGENGINE *e, const char *s);
GWENHYWFAR_API
const char *GWEN_MsgEngine_GetDelimiters(GWEN_MSGENGINE *e);
GWENHYWFAR_API
void GWEN_MsgEngine_SetMode(GWEN_MSGENGINE *e, const char *mode);
GWENHYWFAR_API
const char *GWEN_MsgEngine_GetMode(GWEN_MSGENGINE *e);
GWENHYWFAR_API
unsigned int GWEN_MsgEngine_GetProtocolVersion(GWEN_MSGENGINE *e);
GWENHYWFAR_API
void GWEN_MsgEngine_SetProtocolVersion(GWEN_MSGENGINE *e,
unsigned int p);
GWENHYWFAR_API
GWEN_XMLNODE *GWEN_MsgEngine_GetDefinitions(GWEN_MSGENGINE *e);
/**
* @param e message engine for which the definition is to be added
* @param n xml node to add
* @param take if !=0 then the message engine will take over ownership of
* the XML node.
*/
GWENHYWFAR_API
void GWEN_MsgEngine_SetDefinitions(GWEN_MSGENGINE *e,
GWEN_XMLNODE *n,
int take);
GWENHYWFAR_API
int GWEN_MsgEngine_AddDefinitions(GWEN_MSGENGINE *e,
GWEN_XMLNODE *node);
/*@}*/
/** @name Setters For Virtual Functions: Extending Data Type Handling
*
*/
/*@{*/
GWENHYWFAR_API
void GWEN_MsgEngine_SetTypeReadFunction(GWEN_MSGENGINE *e,
GWEN_MSGENGINE_TYPEREAD_PTR p);
GWENHYWFAR_API
GWEN_MSGENGINE_TYPEREAD_PTR
GWEN_MsgEngine_GetTypeReadFunction(GWEN_MSGENGINE *e);
GWENHYWFAR_API
void GWEN_MsgEngine_SetTypeWriteFunction(GWEN_MSGENGINE *e,
GWEN_MSGENGINE_TYPEWRITE_PTR p);
GWENHYWFAR_API
GWEN_MSGENGINE_TYPEWRITE_PTR
GWEN_MsgEngine_GetTypeWriteFunction(GWEN_MSGENGINE *e);
GWENHYWFAR_API
void GWEN_MsgEngine_SetTypeCheckFunction(GWEN_MSGENGINE *e,
GWEN_MSGENGINE_TYPECHECK_PTR p);
GWENHYWFAR_API
GWEN_MSGENGINE_TYPECHECK_PTR
GWEN_MsgEngine_GetTypeCheckFunction(GWEN_MSGENGINE *e);
GWENHYWFAR_API void
GWEN_MsgEngine_SetGetGlobalValuesFunction(GWEN_MSGENGINE *e,
GWEN_MSGENGINE_GETGLOBALVALUES_PTR p);
GWENHYWFAR_API
GWEN_MSGENGINE_GETGLOBALVALUES_PTR
GWEN_MsgEngine_GetGetGlobalValuesFunction(GWEN_MSGENGINE *e);
/*@}*/ /* Extending Data Type Handling */
/** @name Setters For Virtual Functions: Extending Binary Data Handling
*
*/
/*@{*/
GWENHYWFAR_API
void GWEN_MsgEngine_SetBinTypeReadFunction(GWEN_MSGENGINE *e,
GWEN_MSGENGINE_BINTYPEREAD_PTR p);
GWENHYWFAR_API
GWEN_MSGENGINE_BINTYPEREAD_PTR
GWEN_MsgEngine_GetBinTypeReadFunction(GWEN_MSGENGINE *e);
GWENHYWFAR_API
void GWEN_MsgEngine_SetBinTypeWriteFunction(GWEN_MSGENGINE *e,
GWEN_MSGENGINE_BINTYPEWRITE_PTR p);
GWENHYWFAR_API
GWEN_MSGENGINE_BINTYPEWRITE_PTR
GWEN_MsgEngine_GetBinTypeWriteFunction(GWEN_MSGENGINE *e);
/*@}*/ /* Extending Binary Data Handling */
/** @name Setters For Virtual Functions: Getting Variables
*
*/
/*@{*/
GWENHYWFAR_API
void GWEN_MsgEngine_SetGetCharValueFunction(GWEN_MSGENGINE *e,
GWEN_MSGENGINE_GETCHARVALUE_PTR p);
GWENHYWFAR_API
void GWEN_MsgEngine_SetGetIntValueFunction(GWEN_MSGENGINE *e,
GWEN_MSGENGINE_GETINTVALUE_PTR p);
/*@}*/ /* Getting variables */
/** @name Extending GWEN_MSGENGINE
*
* The functions in this group are strongly deprecated.
*/
/*@{*/
GWENHYWFAR_API
void *GWEN_MsgEngine_GetInheritorData(const GWEN_MSGENGINE *e);
GWENHYWFAR_API
void GWEN_MsgEngine_SetInheritorData(GWEN_MSGENGINE *e, void *d);
GWENHYWFAR_API
void GWEN_MsgEngine_SetFreeDataFunction(GWEN_MSGENGINE *e,
GWEN_MSGENGINE_FREEDATA_PTR p);
/*@}*/
/** @name Locating XML Nodes And Properties
*
*/
/*@{*/
GWENHYWFAR_API
GWEN_XMLNODE *GWEN_MsgEngine_FindGroupByProperty(GWEN_MSGENGINE *e,
const char *pname,
int version,
const char *pvalue);
/**
* Looks for a node of the given type.
* Example: If type is "GROUP" then the node will be searched in
* "<GROUPS>", and the tag name will be "<GROUPdef>".
*/
GWENHYWFAR_API
GWEN_XMLNODE *GWEN_MsgEngine_FindNodeByProperty(GWEN_MSGENGINE *e,
const char *t,
const char *pname,
int version,
const char *pvalue);
GWENHYWFAR_API
GWEN_XMLNODE *GWEN_MsgEngine_FindNodeByPropertyStrictProto(GWEN_MSGENGINE *e,
const char *t,
const char *pname,
int version,
const char *pvalue);
/**
* Searches for a property in "node" and in "refnode" and all its parents.
* If topdown is 0 then the nearest value is used, otherwise the farest
* one is used.
*/
GWENHYWFAR_API
const char *GWEN_MsgEngine_SearchForProperty(GWEN_XMLNODE *node,
GWEN_XMLNODE *refnode,
const char *name,
int topDown);
/*@}*/
/** @name Getters And Setters for Global Variables
*
*/
/*@{*/
/**
* Set a global variable which will be used for "$"-Variables in description
* files.
*/
GWENHYWFAR_API
int GWEN_MsgEngine_SetValue(GWEN_MSGENGINE *e,
const char *path,
const char *value);
GWENHYWFAR_API
int GWEN_MsgEngine_SetIntValue(GWEN_MSGENGINE *e,
const char *path,
int value);
GWENHYWFAR_API
const char *GWEN_MsgEngine_GetValue(GWEN_MSGENGINE *e,
const char *path,
const char *defValue);
GWENHYWFAR_API
int GWEN_MsgEngine_GetIntValue(GWEN_MSGENGINE *e,
const char *path,
int defValue);
/*@}*/
/** @name Parsing, Listing And Creating Messages
*
*/
/*@{*/
GWENHYWFAR_API
int GWEN_MsgEngine_CreateMessage(GWEN_MSGENGINE *e,
const char *msgName,
int msgVersion,
GWEN_BUFFER *gbuf,
GWEN_DB_NODE *msgData);
GWENHYWFAR_API
int GWEN_MsgEngine_CreateMessageFromNode(GWEN_MSGENGINE *e,
GWEN_XMLNODE *node,
GWEN_BUFFER *gbuf,
GWEN_DB_NODE *msgData);
/**
* Deprecated, use @ref GWEN_MsgEngine_ListMessage instead.
*/
GWENHYWFAR_API
int GWEN_MsgEngine_ShowMessage(GWEN_MSGENGINE *e,
const char *typ,
const char *msgName,
int msgVersion,
uint32_t flags);
/**
* This function parses a single entity specified by a single
* XML node (which may of course consist of multiple XML nodes).
* This function makes no assumptions about the format of used variables
* whatsoever. All data parsed from the given message is stored within the
* given database.
*/
GWENHYWFAR_API
int GWEN_MsgEngine_ParseMessage(GWEN_MSGENGINE *e,
GWEN_XMLNODE *group,
GWEN_BUFFER *msgbuf,
GWEN_DB_NODE *gr,
uint32_t flags);
/**
* This function skips all bytes from the given buffer until the given
* delimiter is found or the buffer ends. It also takes care of escape
* characters (to not accidentally take an escaped delimiter for a real one)
* and is able to identify and correctly skip binary data. For the latter
* to work it takes into account that binary data is preceeded by a
* "@123@" sequence, where "123" is the length of the binary data.
* This sequence has been taken from the HBCI specs (German homebanking
* protocol) and has proven to be very effective ;-)
*/
GWENHYWFAR_API
int GWEN_MsgEngine_SkipSegment(GWEN_MSGENGINE *e,
GWEN_BUFFER *msgbuf,
unsigned char escapeChar,
unsigned char delimiter);
/**
* This function reads all segments found within the given buffer.
* This is used to read a full message containing multiple segments.
* It assumes that each segment starts with a group with the id of
* "SegHead" which defines the variable "code" to determine each segment
* type. Please note that this function makes no further assumptions about
* the format of a segment, group or element of a message. This is totally
* based on the settings specified in the XML file.
* Unknown segments are simply skipped.
* For each segment found inside the message a group is created within the
* given database. The name of that group is derived from the property
* "id" within the XML description of each segment (or "code" if "id" does
* not exist).
* One special group is created below every segment group: "segment". This
* group contains some variables:
* <ul>
* <li>
* <i>pos</i> holding the start position of the segment inside the
* buffer
* </li>
* <li>
* <i>length</i> holding the length of the area occupied by the segment
* </li>
* </ul>
* The data of every segment is simply added to the database, so there may
* be multiple groups with the same name if a given segment type occurs more
* often than once.
* @return 0 if ok, -1 on error and 1 if no segment was available
* @param e message engine
* @param gtype typename for segments (most callers use "SEG")
* @param mbuf GWEN_BUFFER containing the message. Parsing is started at
* the current position within the buffer, so please make sure that this
* pos is set to the beginning of the message before calling this function.
* @param gr database to store information parsed from the given message
* @param flags see @ref GWEN_MSGENGINE_READ_FLAGS_TRUSTINFO and
* @ref GWEN_MSGENGINE_READ_FLAGS_DEFAULT
*/
GWENHYWFAR_API
int GWEN_MsgEngine_ReadMessage(GWEN_MSGENGINE *e,
const char *gtype,
GWEN_BUFFER *mbuf,
GWEN_DB_NODE *gr,
uint32_t flags);
/**
* This function creates a full tree of all groups and elements
* used by the given message.
* The caller is responsible for freeing the data returned.
*/
GWENHYWFAR_API
GWEN_XMLNODE *GWEN_MsgEngine_ListMessage(GWEN_MSGENGINE *e,
const char *typ,
const char *msgName,
int msgVersion,
uint32_t flags);
/*@}*/
/** @name Handling Trust Information
*
*/
/*@{*/
/**
* This function returns trust info gathered while parsing a message.
* The caller of this function takes over ownership of this list of
* data, so it is his responsibility to free it.
* @return list of trust data (0 if none)
*/
GWENHYWFAR_API
GWEN_MSGENGINE_TRUSTEDDATA *GWEN_MsgEngine_TakeTrustInfo(GWEN_MSGENGINE *e);
/**
*
*/
GWENHYWFAR_API
int GWEN_MsgEngine_AddTrustInfo(GWEN_MSGENGINE *e,
const char *data,
unsigned int size,
const char *description,
GWEN_MSGENGINE_TRUSTLEVEL trustLevel,
unsigned int pos);
/*@}*/ /* Handling Trust Information */
/*@}*/ /* defgroup */
/*@}*/ /* defgroup (yes, twice) */
#ifdef __cplusplus
}
#endif
#endif
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