rfc1415.txt

RFC 的详细文档！

           FTAM Responder.

        Note:
        a. The ACCT command will be effective with the next PASS
           command.

8.1.3. ALLO

        1. Return a 200 reply code to FTP Client.

8.1.4. APPE

        1. Save current pathname by appending saved CWD string with
           <pathname> argument.  If no saved CWD string, proceed to
           step 12.
        2. Send the following grouped request to FTAM Responder.
            F-BEGIN-GROUP
            F-SELECT
            F-READ-ATTRIBUTES
                Save <Contents Type> parameter value
            F-DESELECT
            F-END-GROUP
        3. If the <Contents Type> parameter value returned with the
           F-READ-ATTRIBUTES has a value of "NBS-9", proceed to step
           12.
        4. Send the following grouped request to the FTAM responder.
            F-BEGIN-GROUP
            F-CREATE
                Set the <Override> parameter in the F-CREATE to
                "Select Old File".
            F-OPEN
            F-END-GROUP
        5. If the file existed, set the <Contents Type> parameter in
           the F-CREATE to match that returned by the
           F-READ-ATTRIBUTES.
        6. If the file did not exist and no previous FTP TYPE "Image"
           command was issued, then set the <Contents Type> parameter
           to "FTAM-1";
           Otherwise, set the <Contents Type> parameter to "FTAM-3".
        7. Send F-WRITE, with <Bulk Data Transfer Specification, FADU
           Operation> parameter set to "File Extend", to FTAM
           Responder.
        8. Loop reading data from FTP data connection, sending the
           data in F-DATA PDUs until end-of-file on the FTP
           connection.
        9. Send F-DATA-END to FTAM Responder.
        10. Send F-TRANSFER-END to FTAM Responder.
        11. Send the following grouped request to the FTAM Responder.



Mindel & Slaski                                                [Page 25]

RFC 1415             FTP-FTAM Gateway Specification         January 1993


            F-BEGIN-GROUP
            F-CLOSE
            F-DESELECT
            F-END-GROUP
        12. Translate FTAM Responder <Action Result> and <Diagnostic>
            parameters to equivalent FTP reply code(s) and send reply
            code(s) to FTP Client.
        13. Translate FTP Client reply codes to equivalent FTAM
            <Action Result> and <Diagnostic> parameters and send
            parameters to FTAM Responder.

        Note:
        a. <pathname> argument is assumed to be a filename, relative
           to the currently saved CWD.
        b. CWD of the FTAM system must be defined prior to issuance of
           APPE.

8.1.5. CDUP

        1. Determine parent directory from saved CWD string.  If no
           saved CWD string, proceed to step 4.
        2. Set <Contents Type> parameter to "NBS-9".
        3. Send the following grouped request to FTAM Responder.
           F-BEGIN-GROUP
           F-SELECT
           F-DESELECT
           F-END-GROUP
        4. Translate FTAM Responder <Action Result> and <Diagnostic>
           parameters to equivalent FTP reply code(s) and send reply
           code(s) to FTP Client.
        5. Translate FTP Client reply codes to equivalent FTAM <Action
           Result> and <Diagnostic> parameters and send parameters to
           FTAM Responder.

        Note:
        a. A POSIX file organization is assumed; i.e., files in the
           systems are organized in a hierarchical structure in which
           all of the non-terminal nodes are directories and all of
           the terminal nodes are any other type of file.
        b. If the parent directory does not exist, the current working
           directory remains unchanged.
        c. CWD of the FTAM system must be defined prior to issuance of
           CDUP.

8.1.6. CWD

        1. Save <pathname> argument as CWD string.
        2. Set <Contents Type> parameter to "NBS-9".



Mindel & Slaski                                                [Page 26]

RFC 1415             FTP-FTAM Gateway Specification         January 1993


        3. Send the following grouped request to FTAM Responder.
            F-BEGIN-GROUP
            F-SELECT
            F-DESELECT
            F-END-GROUP
        4. Translate FTAM Responder <Action Result> and <Diagnostic>
           parameters to equivalent FTP reply code(s) and send reply
           code(s) to FTP Client.
        5. Translate FTP Client reply codes to equivalent FTAM <Action
           Result> and <Diagnostic> parameters and send parameters to
           FTAM Responder.

        Note:
        a. The <pathname> argument is assumed to be an absolute
           directory specification.
        b. If the specified directory does not exist, the current
           working directory remains unchanged.
        c. Saved CWD string is used in other FTP-to-FTAM mappings,
           such as APPE.

8.1.7. DELE

        1. Save current pathname by appending saved CWD string with
           <pathname> argument.  If no saved CWD string, proceed to
           step 3.
        2. Send the following grouped request to FTAM Responder.
            F-BEGIN-GROUP
            F-SELECT
            F-DELETE
            F-END-GROUP
        3. Translate FTAM Responder <Action Result> and <Diagnostic>
           parameters to equivalent FTP reply code(s) and send reply
           code(s) to FTP Client.
        4. Translate FTP Client reply codes to equivalent FTAM
           parameters and send parameters to FTAM Responder.

        Note:
        a. <pathname> argument is assumed to be a filename, relative
           to the currently saved CWD.
        b. CWD of the FTAM system must be defined prior to issuance of
           DELE.

8.1.8. HELP

        1. If no <string> argument is provided, send helpful
           information about the implementation of the gateway to the
           FTP Client.  If an argument is provided, send more specific
           information.



Mindel & Slaski                                                [Page 27]

RFC 1415             FTP-FTAM Gateway Specification         January 1993


        2. Return the FTP reply code 214 to the FTP Client.

8.1.9. LIST

        1. If <pathname> argument is provided, proceed to step 3.
        2. Save current pathname by appending saved CWD string with
           <pathname> argument; If no saved CWD string, proceed to
           step 11.
        3. Send the following grouped request to the FTAM Responder.
            F-BEGIN-GROUP
            F-SELECT
            F-READ-ATTRIBUTES
                Save <Filename>, <Contents Type>, <Data/Time of Last
           Modification>, and <Filesize> parameters
            F-DESELECT
            F-END-GROUP
        4. If the <Contents Type> parameter of the F-READ-ATTRIBUTES
           is not "NBS-9", then return the <Filename>, <Contents
           Type>, <Date/Time of Last Modification>, and <Filesize>
           parameter values, obtained with the previous
           F-READ-ATTRIBUTES, to the FTP data connection;
           and proceed to step 8.
        5. Send the following grouped request to the FTAM Responder.
            F-BEGIN-GROUP
            F-SELECT
            F-OPEN
            F-END-GROUP
        6. Send F-READ to FTAM Responder.
        7. Loop reading F-DATA until F-DATA-END.  As data is received,
           write the <Filename>, <Permitted Actions>, <Contents Type>,
           and <Date/Time of Last Modification> parameter values from
           the PDU to the FTP data connection.
        8. Send F-TRANSFER-END to FTAM Responder.
        9. Send the following grouped request to the FTAM responder.
            F-BEGIN-GROUP
            F-CLOSE
            F-DESELECT
            F-END-GROUP
        10. Translate FTAM Responder <Action Result> and <Diagnostic>
           parameters to equivalent FTP reply code(s) and send reply
           code(s) to FTP Client.
        11. Translate FTP Client reply codes to equivalent FTAM <Action
           Result> and <Diagnostic> parameters and send parameters to
           FTAM Responder.

        Note:
        a. Assume the <pathname> argument is relative to the saved
           CWD, whether filename or directory specification.



Mindel & Slaski                                                [Page 28]

RFC 1415             FTP-FTAM Gateway Specification         January 1993


        b. CWD of the FTAM system must be defined prior to issuance of
           LIST.
        c. Transfers over data connection should be in ASCII.
        e. If list of files with full directory/file specification is
           received from FTAM Responder, then gateway should parse
           list to strip off directory portion.

8.1.10. MKD

        1. Return a 502 reply code (Command not implemented) to the
           FTP Client.

        Note:
        a. As indicated in the NIST Stable Implementation Agreements
           for FTAM [NIST92], creation or deletion of NBS-9 files is
           outside the scope of the agreements.

8.1.11. MODE

        1. If <argument> is "Stream", return 200 reply code to FTP
           Client; Otherwise return a 504 reply code (Command not
           implemented for that parameter).

8.1.12. NLST

        1. If <pathname> argument is provided, use <pathname> argument
           as <Filename> parameter value in F-SELECT issued in step 3.
        2. If no argument is provided, use saved CWD value as
           <Filename> parameter value in F-SELECT issued in step 3; If
           no CWD string is saved and no argument is provided, proceed
           to step 9.
        3. Set <Contents Type> parameter to "NBS-9".
        4. Send the following grouped request to the FTAM Responder.
            F-BEGIN-GROUP
            F-SELECT
            F-OPEN
            F-END-GROUP
        5. Send F-READ to FTAM Responder.
        6. Loop reading F-DATA until F-DATA-END.  As data is received,
           write the filenames and other useful information from the
           PDU to the FTP data connection.
        7. Send F-TRANSFER-END to FTAM Responder.
        8. Send the following grouped request to the FTAM responder.
            F-BEGIN-GROUP
            F-CLOSE
            F-DESELECT
            F-END-GROUP
        9. Translate FTAM Responder <Action Result> and <Diagnostic>



Mindel & Slaski                                                [Page 29]

RFC 1415             FTP-FTAM Gateway Specification         January 1993


           parameters to equivalent FTP reply code(s) and send reply
           code(s) to FTP Client.
        10. Translate FTP Client reply codes to equivalent FTAM <Action
           Result> and <Diagnostic> parameters and send parameters to
           FTAM Responder.

        Note:
        a. As per RFC 959 (FTP), the NLST <pathname> argument is a
           directory.
        b. Assume the argument is relative to the saved CWD, whether
           filename or directory specification.
        c. CWD of the FTAM system must be defined prior to issuance of
           NLST.
        d. Transfers over data connection should be in ASCII.
        e. Gateway should parse full directory/file specifications
           received from FTAM Responder to strip off directory
           portion.  This is required to support the "FTP multiple
           get" function that pipes NLST output to the STOR command.

8.1.13. NOOP

        1. Return a 200 reply code to FTP Client.

8.1.14. PASS

        1. Set <Filestore Password> parameter for F-INITIALIZE.
        2. If <Called Presentation Address>, <User Identity>, and
           <Filestore Password> are available, issue F- INITIALIZE to
           FTAM Responder.
        3. Translate FTAM Responder <Action Result> and <Diagnostic>
           parameters to equivalent FTP reply code(s) and send reply
           code(s) to FTP Client.
        4. Translate FTP Client reply codes to equivalent FTAM <Action
           Result> and <Diagnostic> parameters and send parameters to
           FTAM Responder.

8.1.15. PASV

        1. Wait for data transfer on default data port or data port
           specified by PORT command.
        2. Return a 200 reply code to FTP Client.

8.1.16. PORT

        1. Return a 200 reply code to FTP Client.






Mindel & Slaski                                                [Page 30]

RFC 1415             FTP-FTAM Gateway