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- Log -----------------------------------------------------------------
http://git.savannah.gnu.org/cgit/inetutils.git/commit/?id=73d53fe325d456898f1df0c22e79f0e6a9d797e2
commit 73d53fe325d456898f1df0c22e79f0e6a9d797e2
Author: Mats Erik Andersson <[email protected]>
Date: Fri Nov 2 10:49:52 2012 +0100
telnet: Port sanity check.
diff --git a/ChangeLog b/ChangeLog
index ffc7b76..d54da07 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2012-10-02 Mats Erik Andersson <[email protected]>
+
+ * telnet/commands.c (tn): New block with sanity check of
+ numerical port, being out of range, or mixed with letters.
+
2012-10-01 Mats Erik Andersson <[email protected]>
ftp: Build without readline support.
diff --git a/telnet/commands.c b/telnet/commands.c
index 0375e72..e49aace 100644
--- a/telnet/commands.c
+++ b/telnet/commands.c
@@ -2544,6 +2544,25 @@ tn (int argc, char *argv[])
}
else
telnetport = 0;
+ if (*portp >= '0' && *portp <= '9')
+ {
+ long long int val;
+ char *endp;
+
+ val = strtoll (portp, &endp, 10);
+
+ if ((errno == ERANGE && (val == LLONG_MAX || val == LLONG_MIN))
+ || (*endp == '\0' && (val < 1 || val > 65535)))
+ {
+ printf ("Port number %s is out of range.\n", portp);
+ return 0;
+ }
+ else if (*endp)
+ {
+ printf ("Invalid port name '%s'.\n", portp);
+ return 0;
+ }
+ }
}
free (hostname);
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 5 +++++
telnet/commands.c | 19 +++++++++++++++++++
2 files changed, 24 insertions(+), 0 deletions(-)
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