PR: bin/771 and bin/1037 are resolved by this change
This change changes the default handling of linemode so that older and/or stupider telnet clients can still get wakeup characters like <ESC> and <CTRL>D to work correctly multiple times on the same line, as in csh "set filec" operations. It also causes CR and LF characters to be read by apps in certain terminal modes consistently, as opposed to returning CR sometimes and LF sometimes, which broke existing apps. The change was shown to fix the problem demonstrated in the FreeBSD telnet client, along with the telnet client in Solaris, SCO, Windows '95 & NT, DEC OSF, NCSA, and others. A similar change was incorporated in the non-crypto version of telnetd. This resolves bin/771 and bin/1037.
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bf7bcc34e1
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=30212
@ -192,6 +192,22 @@ main(argc, argv)
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progname = *argv;
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/*
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* This initialization causes linemode to default to a configuration
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* that works on all telnet clients, including the FreeBSD client.
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* This is not quite the same as the telnet client issuing a "mode
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* character" command, but has most of the same benefits, and is
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* preferable since some clients (like usofts) don't have the
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* mode character command anyway and linemode breaks things.
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* The most notable symptom of fix is that csh "set filec" operations
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* like <ESC> (filename completion) and ^D (choices) keys now work
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* in telnet sessions and can be used more than once on the same line.
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* CR/LF handling is also corrected in some termio modes. This
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* change resolves problem reports bin/771 and bin/1037.
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*/
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linemode=1; /*Default to mode that works on bulk of clients*/
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#ifdef CRAY
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/*
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* Get number of pty's before trying to process options,
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@ -192,6 +192,22 @@ main(argc, argv)
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progname = *argv;
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/*
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* This initialization causes linemode to default to a configuration
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* that works on all telnet clients, including the FreeBSD client.
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* This is not quite the same as the telnet client issuing a "mode
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* character" command, but has most of the same benefits, and is
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* preferable since some clients (like usofts) don't have the
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* mode character command anyway and linemode breaks things.
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* The most notable symptom of fix is that csh "set filec" operations
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* like <ESC> (filename completion) and ^D (choices) keys now work
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* in telnet sessions and can be used more than once on the same line.
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* CR/LF handling is also corrected in some termio modes. This
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* change resolves problem reports bin/771 and bin/1037.
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*/
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linemode=1; /*Default to mode that works on bulk of clients*/
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#ifdef CRAY
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/*
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* Get number of pty's before trying to process options,
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