Apple AppleShare 3.0 Users and Groups Programming Interf Manual de usuario

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USERS AND GROUPS PROGRAMMING INTERFACE
UGLibrary is a set of functions that lets you implement users and groups
capabilities for your shared applications in a consistent way. Thus, you can
take advantage of existing system-software users and groups components to
authenticate users of your shared applications.
Additionally, your applications can use UGLibrary to manipulate the Users &
Groups Data File for the AppleShare Server 3.0, or for any Macintosh that is
using Macintosh File Sharing. These functions provide a simple programming
interface that allows your applications to add and delete users and groups,
and to set information on users, groups, the AppleShare File Server 3.0, or
Macintosh File Sharing. (Throughout the rest of this document, the term file
server is used to refer to both the AppleShare File Server 3.0 and Macintosh
File Sharing.)
Here are some examples of how UGLibrary can help you make use of users and
groups files from within your applications:
- The UGAuthenticateUser function can let server applications other than the
file server use the users and groups file to authenticate the applications'
remote users. (The password must be a Pascal string containing the Cleartext
value of the password. the application must use the appropriate encryption
methods if the password will be sent over the network.)
- A database application can use the UGGetUserInfo function to see if a
remote user is a member of a specific group before allowing the user access
to files.
- Classroom software can generate users and groups files for file servers,
using its student and class database.
- An application, running on a server Macintosh, that is communicating with a
remote application can be used to maintain the users and groups files
remotely. Apple events or the PPC Toolbox can be used for authenticated
communications between the applications.
The users and groups file
A users and groups file contains records that define file server
characteristics, the list of users, the list of groups, the mapping of users
into groups, and other information about users. Users and groups files can be
opened and closed. When a users and groups file is opened, a file reference
number is assigned to the access path and a program access ID is assigned to
the application that opened the file. The file reference number and program
access ID are passed to all UGLibrary functions that manipulate the open
users and groups file.
When your program creates a users and groups file, the file's server version
number is Sys7SrvrVer. (This is the value that the UGGetULInfo function
returns in the ugSrvrVersion field.) This version number indicates that the
file can be used only by Macintosh File Sharing. If the file is to be used
with the AppleShare File Server 3.0, the ugSrvrVersion field must be set to
AS3SrvrVer by means of the UGSetULInfo function.
The following UGLibrary functions are relevant to users and groups files and
are described in detail later in this document:
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Indice de contenidos

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USERS AND GROUPS PROGRAMMING INTERFACEUGLibrary is a set of functions that lets you implement users and groupscapabilities for your shared application

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(user ID 1) cannot be deleted.Result CodesnoErr 0 No error.ugUserNotFound 5 User is not in the users and

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ugGroupAlreadyExists 2 Group with the same name exists.ugUserNotFound 5 The user is not in the users andgroups file.

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66 ugGroups 168 bytes array of group IDs(42 longs)UGGetUserInfo can be used to provide information about a specific user,enumerate all users in

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ugUserNotFound 5 The user is not in the users and groupsfile.ugGroupNotFound 6 The group is not in the users and grou

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Result CodesnoErr 0 No error.ugUserNotFound 5 The user is not in the users and groupsfile.ugNotAUser

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ugBadParamErr 13 async is TRUE, the length of the passwordis greater than 8, or the length of theuser name is greater than 31.ugInv

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FUNCTION UGDeleteGroup (thePB: UserGroupPBPtr; async: BOOLEAN): OSErr;pascal OSErr UGDeleteGroup (UserGroupPBPtr thePB, Boolean async);Parameter Block

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should be a pointer to a zero-length Str31. If ugNamePtr is used, thenugGroupID should be 0. If both fields have values, then ugGroupID takesprecedenc

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When UGGetGroupInfo is used to get information about a specific group, thegroup is specified either by ugGroupID or by ugNamePtr. If ugGroupID is used

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group. (The primary group is used by AppleShare File Servers 2.0.1 and 3.0when Apple II mode is on. Refer to "Data Structures," later in thi

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- UGOpenFile- UGCloseFile- UGCreateFileUsersThe following attributes are assigned to each user (except the guest user): auser ID, a user name, a passw

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Result CodesnoErr 0 No error.ugUserNotFound 5 The user is not in the users andgroups file.ugGro

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62 ugPwdExpDate long days beforepasswords expireUGGetULInfo returns the characteristics of the AppleShare File Server 3.0 orthe Macintosh File

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60 ugMaxBadLogins word maximum failed loginattempts62 ugPwdExpDate long days before userpasswords expireUGSetULInfo sets the fil

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BitUser flag number DescriptionIACEnabled 0 Set if IAC is enabled for this user.LoginEnabled

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Data File, the state of the reserved bits should be preserved.The following figure shows the ugSrvrFlags bits.All of the ugSrvrFlags flags are effecti

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ugCmdAddr: Ptr;ugCompletion: ProcPtr;ugResult: OSErr;ugNamePtr: StringPtr;ugVRefNum: INTEGER;ugRefNum: INTEGER;ugDirID: LONGINT;ugAccessID: LONGINT;ug

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ugNamePtr: StringPtr;ugVRefNum: INTEGER;ugRefNum: INTEGER;ugDirID: LONGINT;ugAccessID: LONGINT;ugUserID: LONGINT;ugGroupID: LONGINT;ugPosOffset: INTEG

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ugSrvrFlags: ARRAY[0..1] OF LONGINT;ugMinPwdLen: SignedByte;filler1: SignedByte;ugMaxBadLogins: INTEGER;ugPwdExpDate: LONGINT;END;UserGroupPBPtr = ^UG

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struct UGFilePBUGPBHeaderStringPtr ugAdminKey;typedef struct UGFilePB UGFilePB;struct UGUserPBUGPBHeadershort ugPosOffset;StringPtr ug

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short ugMaxBadLogins;long ugPwdExpDate;typedef struct UGServerPB UGServerPB;union UGParamBlockRecUGFilePB ugFilePB;UGUserPB ugU

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parts of the system use the same administrator name. Once the administratoruser is created, it cannot be deleted or renamed by means of UGLibrary; itc

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In C:pascal OSErr UGNewUser (UserGroupPBPtr thePB, Boolean async);pascal OSErr UGDeleteUser (UserGroupPBPtr thePB, Boolean async);pascal OSErr UGRenam

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pascal OSErr UGGetULInfo (UserGroupPBPtr thePB, Boolean async);pascal OSErr UGSetULInfo (UserGroupPBPtr thePB, Boolean async);Result codes returned by

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ugFatalError = 99For more informationAPDA offers convenient worldwide access to over three hundred developmenttools, resources, and training

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- UGNewGroup- UGDeleteGroup- UGRenameGroup- UGGetGroupInfo- UGAssignUserToGroup- UGDeleteUserFromGroupThe file serverThe UGGetULInfo function is used

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Note For Apple II users, AppleShare Admin creates a personal folder for eachuser inside the Users folder. Thus, even if the Apple2 bit is set, theSta

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Macintosh File Sharing supports a combined total of 100 users and groups.Several features supported by the AppleShare File Server 3.0 are notavailable

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to a Str31) within the folder specified in ugDirID on the volume specifiedin ugVRefNum. If ugNamePtr points to a zero-length Str31, the localized name

Pagina 31

UGCreateFileFUNCTION UGCreateFile (thePB: UserGroupPBPtr; async: BOOLEAN): OSErr;pascal OSErr UGCreateFile (UserGroupPBPtr thePB, Boolean async);Param

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UGNewUser creates a new user. The pointer ugNamePtr (a pointer to a Str31)contains the name of the user and the pointer ugPassword (a pointer to aStr8

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