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sys.sp_MSget_publisher_rpc

  No additional text.


Syntax
create procedure sys.sp_MSget_publisher_rpc
(
    @trigger_id int
    ,@connect_string nvarchar(2000) output
    ,@owner sysname = null
)
AS
BEGIN
    SET NOCOUNT ON
    declare @publisher sysname
                ,@publisher_db sysname
                ,@login sysname
                ,@password nvarchar(524)
                ,@security_mode int
                ,@object_id int
                ,@retcode int
                ,@islocalpublisher bit  -- 1 = local, 0 = remote

    
    -- Make sure this proc is called from the trigger.
    -- Better to use object_id if owner name is passed in.
    
    if trigger_nestlevel(@trigger_id) = 0
    begin
        raiserror(14126, 16, -1)
        return (1) -- current user does not have insert permission to underlying table
    end
    
    -- Security check: the caller of this SP has to be one of the
    -- predefined replication triggers defined in the db
    
    if (@owner is null)
    begin
        if (@trigger_id not in (select object_id(object_name)
                from dbo.MSreplication_objects
                where object_type = 'T'))
        begin
            raiserror(14126, 16, 4)
            return -1
        end
    end
    else
    begin
        if (@trigger_id not in (select object_id(quotename(@owner) + N'.' + quotename(object_name))
                from dbo.MSreplication_objects
                where object_type = 'T'))
        begin
            raiserror(14126, 16, 4)
            return -1
        end
    end
    
    -- Get the security information
    
    IF object_id('MSsubscription_properties' ,'U') is not NULL
    begin
        
        -- MSsubscription_properties exists
        -- Check for the subscription
        
        select @login = p.publisher_login,
                @password = p.publisher_password,
                @security_mode = p.publisher_security_mode,
                @publisher = o.publisher,
                @publisher_db = o.publisher_db
        from MSsubscription_properties p join MSreplication_objects o
            on (UPPER(p.publisher) = UPPER(o.publisher)
                and p.publisher_db = o.publisher_db
                and p.publication = o.publication)
        where o.object_name = object_name(@trigger_id)
        if (@security_mode is null or @security_mode = -1)
        begin
            
            -- entry for the subscription does not exist
            -- or, sp_link_publication has not been called
            
            raiserror(21079, 16, -1)
            return(1)
        end
    end
    else
    begin
        
        -- MSsubscription_properties does not exist
        
        raiserror(21079, 16, -1)
        return(1)
    end
    
    -- if we have come this far - the subscription exists
    
    select @islocalpublisher = case when (UPPER(@publisher) = UPPER(publishingservername())) then 1 else 0 end
    
    -- Process based on security mode
    
    if @security_mode = 2 -- 2 = use dbo.sysservers
    begin
        
        -- we will be using linked/remote/local server entry
        -- send NULL connect_string - the trigger will just
        -- issue a RPC call to publisher
        
        select @connect_string = null
    end
    else
    begin
        
        -- we will be using specific login credential
        
        if (@islocalpublisher = 1)
        begin
            
            -- the publisher and subscriber are on the same server.
            -- OpenDataSource() fails to do loopback distributed RPC.
            -- We will override the settings of security mode = 0
            -- and send back a NULL connect string - a LOCAL Proc execution
            -- will occur.
            
            select @connect_string = null
        end
        else
        begin
            
            -- publisher and subscriber on different server
    
            if @login is null
            begin
                
                -- Cannot have null login
                
                raiserror(21079, 16, -1)
                return(1)
            end
            
            -- verify the password
            
            EXEC @retcode = sys.sp_MSrepldecrypt @password OUTPUT
            IF @@error <> 0 OR @retcode <> 0
            begin
                
                -- password verification failed
                
                return 1
            end
            if @password is null
                select @password = N''
            
            -- Names containing space in connection string is automatically enabled.
            -- [] and ' are not recoginized by opendatasource
            -- Note ';' in names in connection string will mess things up.
            
            select @connect_string = 'SERVER=' + @publisher + ';UID=' +
                    @login + ';PWD=' + @password + ';'
        end
    end
    
    -- all done
    
    return 0
END

 
Last revision 2008RTM
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