From d4bfb01416cd7954db52acc41d764847364b97f9 Mon Sep 17 00:00:00 2001 From: Lev Kujawski Date: Wed, 6 Jan 2021 12:26:40 -0700 Subject: [PATCH 5/7] Disable binding a privileged client port with rresvport() on Linux systems using the musl C library, where that function is unsupported. If there is a need for XPrint support, a BSD-licensed implementation of rresvport() is available in the portable edition of OpenSSH. --- cde/programs/dtprintinfo/objects/PrintObj/ParseJobs.C | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/cde/programs/dtprintinfo/objects/PrintObj/ParseJobs.C b/cde/programs/dtprintinfo/objects/PrintObj/ParseJobs.C index b970d7eb..2c532c8a 100644 --- a/cde/programs/dtprintinfo/objects/PrintObj/ParseJobs.C +++ b/cde/programs/dtprintinfo/objects/PrintObj/ParseJobs.C @@ -195,8 +195,16 @@ int ConnectToPrintServer(const char *rhost, int timeout) // run as user's UID, but with privileges from root SETEUID(0); - // Try connecting to the server. + // Try connecting to the server from a privileged port. + /* FIXME: Test for the presence of rresvport and provide a substitute + * if necessary. Linux C library support: + * dietlibc: no rresvport, defines __dietlibc__ + * musl: no rresvport + * uclibc: rresvport, defines __GLIBC__ + */ +#if !defined(__linux__) || defined(__GLIBC__) s = rresvport(&lport); +#endif signal(SIGALRM, connect_timeout); if (timeout > 0) -- 2.30.0