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5a12e7c134
Wed Aug 26 10:00:38 CDT 2009 Slackware 13.0 x86_64 is released as stable! Thanks to everyone who helped make this release possible -- see the RELEASE_NOTES for the credits. The ISOs are off to the replicator. This time it will be a 6 CD-ROM 32-bit set and a dual-sided 32-bit/64-bit x86/x86_64 DVD. We're taking pre-orders now at store.slackware.com. Please consider picking up a copy to help support the project. Once again, thanks to the entire Slackware community for all the help testing and fixing things and offering suggestions during this development cycle. As always, have fun and enjoy! -P.
31 lines
826 B
Diff
31 lines
826 B
Diff
--- netkit-ntalk-0.17/talkd/talkd.c.orig 1999-09-29 02:04:15 +0400
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+++ netkit-ntalk-0.17/talkd/talkd.c 2004-09-05 19:20:50 +0400
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@@ -68,6 +68,7 @@ char talkd_rcsid[] =
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#define TIMEOUT 30
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#define MAXIDLE 120
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+#define MINUDPSRCPORT 1024
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#if !defined(MAXHOSTNAMELEN)
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#define MAXHOSTNAMELEN 64
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@@ -167,6 +168,7 @@ do_one_packet(void)
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struct sockaddr_in sn;
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int cc, i, ok;
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socklen_t addrlen;
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+ int theirport;
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addrlen = sizeof(sn);
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cc = recvfrom(0, inbuf, sizeof(inbuf), 0,
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@@ -194,6 +196,12 @@ do_one_packet(void)
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return;
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}
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+ theirport = ntohs(sn.sin_port);
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+ if (theirport < MINUDPSRCPORT) {
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+ syslog(LOG_WARNING, "%d: bad port", theirport);
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+ return;
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+ }
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+
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/*
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* If we get here we have an address we can reply to, although
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* it may not be good for much. If possible, reply to it, because
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