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9.14 CHECK_AUTHORITY

Note: Built-In Function Rules     Usage Options

Checks whether a user has a certain authority to an object.

Arguments

No

Type

Req/ Opt

Description

Min Len

Max Len

Min Dec

Max Dec

1

A

Req

Object name

1

10



2

A

Req

Object name
extension Values:

- blanks
- literal
- *LIBL

1

10



3

A

Req

Object type
Values:

DF - Field
AT - Application template*
PF - Function
PD - Process
FD - File
P# - Partition*
SV - System variable
MT - Multilingual string.
*Note: Object Types P# and AT have no meaning in the context of Visual LANSA.

2

2



4

A

Req

Access required to object

Values:

Operational 
UD - Use definition 
MD - Modify definition
DD - Delete definition

Data 
DS - Display 
AD- Add 
CH - Change 
DL - Delete 

2

2



Return Values

No

Type

Req/ Opt

Description

Min Len

Max Len

Min Dec

Max Dec

1

A

Req

Access granted

1

1



This function can be used to determine whether a user can update a record in a file OR use a field definition.

DEFINE   FIELD(#OBJEXT) TYPE(*CHAR) LENGTH(10) DEFAULT('''*LIBL''')

* < OR >

DEFINE   FIELD(#OBJEXT) TYPE(*CHAR) LENGTH(10) DEFAULT(*BLANKS)

USE      BUILTIN(CHECK_AUTHORITY) WITH_ARGS (#FILENAME #OBJEXT FD CH) TO_GET(#OKAY)

IF       COND('#OKAY *EQ Y')

UPDATE   FILE(#FILENAME)

ELSE

MESSAGE  MSGTXT('Not authorized to update file')

ENDIF

DEFINE   FIELD(#OBJEXT) TYPE(*CHAR) LENGTH(10) DEFAULT(*BLANKS)

USE      BUILTIN(CHECK_AUTHORITY) WITH_ARGS #FLDNAME #OBJEXT DF UD) TO_GET(#OKAY)

IF       COND('#OKAY *EQ Y')

USE      BUILTIN(GET_FIELD) WITH_ARGS(#FIELDNAME) TO_GET(#RETC #TYPE #LEN....)

ENDIF

When the value *CHECK_AUTH_DYNLIBL  is not specified in data area DC@OSVEROP, when checking authorities on files (FD) and no library or *LIBL is specified, it is assumed the file is in the library list that was present at time of entry to LANSA. Library list cannot be changed dynamically. If the library list was changed during the LANSA session LANSA must be left and re-entered for the new library list to be recognized.

Tips

When the value * CHECK_AUTH_DYNLIBL is specified in  data area DC@OSVEROP, when checking authorities on files (FD) and no library or LIBL is specified, the library list is retrieved each time dynamically to determine which library the CHECK_AUTHORITY is to actually use. Use of this setting may have performance implications.

When checking authority on files use the system variable *PARTDTALIB for the object extension value.

Note: When checking FUNCTION authorization (type PF) both the PROCESS and the FUNCTION must be specified as arguments. That is, the PROCESS is the object name and the FUNCTION is the object extension.

USE      BUILTIN(CHECK_AUTHORITY)

         WITH_ARGS (#PROCESS CONTROL PF UD ) TO_GET(#OKAY)

IF       COND('#OKAY *EQ Y')

CALL     PROCESS(#PROCESS) FUNCTION(CONTROL)

ELSE

MESSAGE  MSGTXT('Not authorized to function CONTROL')

ENDIF

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