tncc_preload not working

[sirfz]

For some reason, running tncc.jar with tncc_preload.so isn't working for me. The wrapper script just blocks while trying to read from the socket and never receives anything.

I cam up with a workaround to make it work by running tncc.jar without the preload and opening a socket to the port loaded in ~/.juniper_networks/narport.txt but this only works if I run the script as root.

How can I properly debug this and try to find out what's happening exactly?

I'm using Oracle Java 8 x64.

[SparkyBluefang]

I see the same. I'm trying to get TNCC to work with openconnect.

Sent start; waiting for response from TNCC
tncc_preload[18509]: fd_grab(0)
tncc_preload[18509]: fopen(filename=/opt/oracle-jdk-bin-1.7.0.80/jre/lib/amd64/jvm.cfg, modes=r)
tncc_preload[18509]: fclose
tncc_preload[18509]: __xstat(filename=/opt/oracle-jdk-bin-1.7.0.80/jre/lib/amd64/server/libjvm.so, stat_buf)
tncc_preload[18509]: fopen(filename=/opt/oracle-jdk-bin-1.7.0.80/jre/lib/amd64/libverify.so, modes=r)
tncc_preload[18509]: fclose
tncc_preload[18509]: fopen(filename=/opt/oracle-jdk-bin-1.7.0.80/jre/lib/amd64/libjava.so, modes=r)
tncc_preload[18509]: fclose
tncc_preload[18509]: __xstat(filename=.hotspotrc, stat_buf)
tncc_preload[18509]: __xstat(filename=/opt/oracle-jdk-bin-1.7.0.80/jre/lib/amd64/xawt/libmawt.so, stat_buf)
tncc_preload[18509]: sigaction(sig=12)
tncc_preload[18509]: sigaction(sig=1)
tncc_preload[18509]: sigaction(sig=2)
tncc_preload[18509]: sigaction(sig=15)
tncc_preload[18509]: sigaction(sig=11)
tncc_preload[18509]: sigaction(sig=11)
tncc_preload[18509]: sigaction(sig=13)
tncc_preload[18509]: sigaction(sig=13)
tncc_preload[18509]: sigaction(sig=7)
tncc_preload[18509]: sigaction(sig=7)
tncc_preload[18509]: sigaction(sig=4)
tncc_preload[18509]: sigaction(sig=4)
tncc_preload[18509]: sigaction(sig=8)
tncc_preload[18509]: sigaction(sig=8)
tncc_preload[18509]: sigaction(sig=25)
tncc_preload[18509]: sigaction(sig=25)
tncc_preload[18509]: fopen(filename=/proc/self/maps, modes=r)
tncc_preload[18509]: fclose
tncc_preload[18509]: fopen(filename=/etc/passwd, modes=rme)
tncc_preload[18509]: fclose
tncc_preload[18509]: open(file=/tmp/hsperfdata_root, oflag=131072) = 4
tncc_preload[18509]: __fxstat(4) = 0
tncc_preload[18509]: __fxstat(4) = 0
tncc_preload[18509]: __fxstat(5) = 0
tncc_preload[18509]: close(4)
tncc_preload[18509]: open(file=., oflag=0) = 4
tncc_preload[18509]: close(4)
tncc_preload[18509]: mkdir(path=/tmp/hsperfdata_root, mode=00755)
tncc_preload[18509]: open(file=/tmp/hsperfdata_root, oflag=131072) = 4
tncc_preload[18509]: __fxstat(4) = 0
tncc_preload[18509]: __fxstat(4) = 0
tncc_preload[18509]: __fxstat(5) = 0
tncc_preload[18509]: close(4)
tncc_preload[18509]: open(file=., oflag=0) = 4
tncc_preload[18509]: open(file=18509, oflag=131138, mode=0600) = 6
tncc_preload[18509]: close(4)
tncc_preload[18509]: __fxstat(6) = 0
tncc_preload[18509]: close(6)
tncc_preload[18509]: fopen(filename=/opt/oracle-jdk-bin-1.7.0.80/jre/lib/amd64/libzip.so, modes=r)
tncc_preload[18509]: fclose
tncc_preload[18509]: __xstat(filename=/opt/oracle-jdk-bin-1.7.0.80/jre/lib/resources.jar, stat_buf)
tncc_preload[18509]: __xstat(filename=/opt/oracle-jdk-bin-1.7.0.80/jre/lib/rt.jar, stat_buf)
tncc_preload[18509]: __xstat(filename=/opt/oracle-jdk-bin-1.7.0.80/jre/lib/sunrsasign.jar, stat_buf)
tncc_preload[18509]: __xstat(filename=/opt/oracle-jdk-bin-1.7.0.80/jre/lib/jsse.jar, stat_buf)
tncc_preload[18509]: __xstat(filename=/opt/oracle-jdk-bin-1.7.0.80/jre/lib/jce.jar, stat_buf)
tncc_preload[18509]: __xstat(filename=/opt/oracle-jdk-bin-1.7.0.80/jre/lib/charsets.jar, stat_buf)
tncc_preload[18509]: __xstat(filename=/opt/oracle-jdk-bin-1.7.0.80/jre/lib/jfr.jar, stat_buf)
tncc_preload[18509]: __xstat(filename=/opt/oracle-jdk-bin-1.7.0.80/jre/classes, stat_buf)
tncc_preload[18509]: fopen(filename=/opt/oracle-jdk-bin-1.7.0.80/jre/lib/meta-index, modes=r)
tncc_preload[18509]: fclose
tncc_preload[18509]: __xstat(filename=.hotspot_compiler, stat_buf)
tncc_preload[18509]: fopen(filename=/etc/passwd, modes=rme)
tncc_preload[18509]: fclose
tncc_preload[18509]: fopen(filename=/opt/oracle-jdk-bin-1.7.0.80/jre/lib/amd64/libzip.so, modes=r)
tncc_preload[18509]: fclose
tncc_preload[18509]: sigaction(sig=1)
tncc_preload[18509]: sigaction(sig=1)
tncc_preload[18509]: sigaction(sig=2)
tncc_preload[18509]: sigaction(sig=2)
tncc_preload[18509]: sigaction(sig=15)
tncc_preload[18509]: sigaction(sig=15)
tncc_preload[18509]: close(5)
tncc_preload[18509]: sigaction(sig=3)
tncc_preload[18509]: close(6)
tncc_preload[18509]: fopen(filename=/opt/oracle-jdk-bin-1.7.0.80/jre/lib/amd64/libsunec.so, modes=r)
tncc_preload[18509]: fclose
tncc_preload[18509]: fopen(filename=/opt/oracle-jdk-bin-1.7.0.80/jre/lib/amd64/libnet.so, modes=r)
tncc_preload[18509]: fclose
tncc_preload[18509]: sigaction(sig=62)
tncc_preload[18509]: tncc_socket
tncc_preload[18509]: socket(domain=10, type=1, protocol=0) = -1
tncc_preload[18509]: fopen(filename=/proc/net/ipv6_route, modes=r)
tncc_preload[18509]: fopen(filename=/proc/net/if_inet6, modes=r)
tncc_preload[18509]: close(14)
tncc_preload[18509]: tncc_socket
tncc_preload[18509]: socket(domain=2, type=1, protocol=0) = 14
tncc_preload[18509]: tncc_bind
tncc_preload[18509]: bind(fd=14) = 0
tncc_preload[18509]: tncc_listen
tncc_preload[18509]: listen(fd=14) = 0
tncc_preload[18509]: close(15)
socket opened
tncc_preload[18509]: tncc_accept(14, ..., 16)
tncc_preload[18509]: tncc_accept: AF_INET
tncc_preload[18509]: recv(fd=14) = 558
tncc_preload[18509]: send(fd=15) = 558
tncc_preload[18509]: fd_grab(16)
tncc_preload[18509]: accept(fd=14) = 16
tncc_preload[18509]: close(16)
^C
Failed to read response from TNCC
Failed to obtain WebVPN cookie
tncc_preload[18509]: tncc_accept(14, ..., 16)
tncc_preload[18509]: tncc_accept: AF_INET
tncc_preload[18509]: recv(fd=14) = 0
tncc_preload[18509]: send(fd=15) = 0
tncc_preload[18509]: fd_grab(16)
tncc_preload[18509]: accept(fd=14) = 16
tncc_preload[18509]: close(16)
tncc_preload[18509]: tncc_accept(14, ..., 16)
tncc_preload[18509]: tncc_accept: AF_INET
tncc_preload[18509]: recv(fd=14) = 0
tncc_preload[18509]: send(fd=15) = 0
tncc_preload[18509]: fd_grab(16)
tncc_preload[18509]: accept(fd=14) = 16
tncc_preload[18509]: close(16)
tncc_preload[18509]: tncc_accept(14, ..., 16)
tncc_preload[18509]: tncc_accept: AF_INET
tncc_preload[18509]: recv(fd=14) = 0
tncc_preload[18509]: send(fd=15) = 0
tncc_preload[18509]: fd_grab(16)
tncc_preload[18509]: accept(fd=14) = 16
tncc_preload[18509]: close(16)
tncc_preload[18509]: tncc_accept(14, ..., 16)
tncc_preload[18509]: tncc_accept: AF_INET
tncc_preload[18509]: recv(fd=14) = 0
tncc_preload[18509]: send(fd=15) = 0
tncc_preload[18509]: fd_grab(16)
tncc_preload[18509]: accept(fd=14) = 16
tncc_preload[18509]: close(16)
tncc_preload[18509]: tncc_accept(14, ..., 16)
tncc_preload[18509]: tncc_accept: AF_INET
tncc_preload[18509]: recv(fd=14) = 0
tncc_preload[18509]: send(fd=15) = 0
tncc_preload[18509]: fd_grab(16)
tncc_preload[18509]: accept(fd=14) = 16
tncc_preload[18509]: close(16)
tncc_preload[18509]: tncc_accept(14, ..., 16)
tncc_preload[18509]: tncc_accept: AF_INET
tncc_preload[18509]: recv(fd=14) = 0
tncc_preload[18509]: send(fd=15) = 0
tncc_preload[18509]: fd_grab(16)
tncc_preload[18509]: accept(fd=14) = 16
tncc_preload[18509]: unlink(/tmp/hsperfdata_root/18509)

[sirfz]

Yep, I compiled with debug enabled as well and saw the same messages but couldn't put a finger on the problem.