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- Make telnetd only slightly more RFC-compatible

Browse source 
Thanks to Fedora Anaconda telnet code as an example.
This allows us to actually get an echo back on the
screen when we type commands.


svn path=/trunk/; revision=39428
This commit is contained in:
Steven Edwards 2009-02-06 05:34:39 +00:00
parent af69e9c54e
commit d0c78a0f46
1 changed files with 31 additions and 8 deletions
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39
rosapps/applications/sysutils/telnetd/telnetd.c
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@ -35,12 +35,21 @@
#define LF (10) #define LF (10)
#define DEL (127) #define DEL (127)
#define IAC (255) #define IAC "\xff"
#define DONT (254) #define DONT "\xfe"
#define WONT (253) #define WONT "\xfc"
#define DO (252) #define WILL "\xfb"
#define WILL (251) #define DO "\xfd"
#define ECHO (1) #define SB "\xfa"
#define SE "\xf0"
#define ECHO "\x01"
#define SUPPRESS_GO_AHEAD "\x03"
#define TERMINAL_TYPE "\x18"
#define NAWS "\x1f"
#define LINEMODE "\x22"
#define NEWENVIRON "\x27"
#define MODE "\x01"
#define HANDSHAKE_TIMEOUT (3) #define HANDSHAKE_TIMEOUT (3)
@ -300,10 +309,23 @@ static int DoTelnetHandshake(int sock)
int received; int received;
fd_set set; fd_set set;
struct timeval timeout = { HANDSHAKE_TIMEOUT, 0 }; struct timeval timeout = { HANDSHAKE_TIMEOUT, 0 };
unsigned char will_echo[3] = { IAC, WILL, ECHO };
char will_echo[]=
IAC DONT ECHO
IAC WILL ECHO
IAC WILL NAWS
IAC WILL SUPPRESS_GO_AHEAD
IAC DO SUPPRESS_GO_AHEAD
IAC DONT NEWENVIRON
IAC WONT NEWENVIRON
IAC WONT LINEMODE
IAC DO NAWS
IAC SB TERMINAL_TYPE "\x01" IAC SE
;
unsigned char client_reply[256]; unsigned char client_reply[256];
if (send(sock, (const char *) will_echo, sizeof(will_echo), 0) < 0) { if (send(sock, will_echo, sizeof(will_echo), 0) < 0) {
return -1; return -1;
} }
@ -682,3 +704,4 @@ static VOID ErrorExit (LPTSTR lpszMessage)
} }
ExitProcess(0); ExitProcess(0);
} }