mirror of
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Fixed bind with abstract unix domain sockets (Linux)
This commit is contained in:
Gerhard Rieger
parent
f01ed154b6
commit
ad9e6b1fa4
5 changed files with 145 additions and 63 deletions
4
CHANGES
4
CHANGES
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@ -162,6 +162,10 @@ corrections:
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docu mentions option so-bindtodev but correct name is so-bindtodevice.
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Thanks to Jim Zimmerman for reporting.
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Bind with ABSTRACT commands used non-abstract namespace (Linux).
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Test: ABSTRACT_BIND
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Thanks to Denis Shatov for reporting this bug.
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porting:
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Red Hat issue 1020203: configure checks fail with some compilers.
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Use case: clang
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70
test.sh
70
test.sh
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@ -9005,28 +9005,78 @@ rc2="$?"
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i=0; while [ ! -s "$tf" -a "$i" -lt 10 ]; do usleep 100000; i=$((i+1)); done
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kill "$pid1" 2>/dev/null; wait
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if [ "$rc2" -ne 0 ]; then
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$PRINTF "$FAILED: $TRACE $SOCAT:\n"
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echo "$CMD1 &"
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echo "$CMD2"
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cat "${te}1"
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cat "${te}2"
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$PRINTF "$FAILED: $TRACE $SOCAT:\n"
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echo "$CMD1 &"
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echo "$CMD2"
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cat "${te}1"
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cat "${te}2"
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numFAIL=$((numFAIL+1))
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listFAIL="$listFAIL $N"
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elif ! echo "$da" |diff - "$tf" >"$tdiff"; then
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$PRINTF "$FAILED\n"
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cat "$tdiff"
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$PRINTF "$FAILED\n"
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echo "$CMD1 &"
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cat "${te}1"
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cat "$tdiff"
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numFAIL=$((numFAIL+1))
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listFAIL="$listFAIL $N"
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else
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$PRINTF "$OK\n"
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if [ -n "$debug" ]; then cat $te; fi
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numOK=$((numOK+1))
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$PRINTF "$OK\n"
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if [ -n "$debug" ]; then cat $te; fi
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numOK=$((numOK+1))
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fi
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fi ;; # NUMCOND, feats
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esac
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N=$((N+1))
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# bind with Linux abstract UNIX domain addresses bound to filesystem socket
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# instead of abstract namespace
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NAME=ABSTRACT_BIND
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case "$TESTS" in
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*%$N%*|*%functions%*|*%bugs%*|*%socket%*|*%unix%*|*%abstract%*|*%$NAME%*)
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TEST="$NAME: abstract bind"
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# open an abstract client address with bind option, bind to the target socket.
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# send a datagram.
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# when socat outputs the datagram it got the test succeeded
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if ! eval $NUMCOND; then :;
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elif [ "$UNAME" != Linux ]; then
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$PRINTF "test $F_n $TEST... ${YELLOW}only on Linux${NORMAL}\n" $N
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numCANT=$((numCANT+1))
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else
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tf="$td/test$N.stdout"
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te="$td/test$N.stderr"
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tdiff="$td/test$N.diff"
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ts1="$td/test$N.sock1"
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da="test$N $(date) $RANDOM"
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CMD1="$TRACE $SOCAT $opts - ABSTRACT-SENDTO:$ts1,bind=$ts1"
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printf "test $F_n $TEST... " $N
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echo "$da" |$CMD1 >$tf 2>"${te}1"
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rc1=$?
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if [ $rc1 -ne 0 ]; then
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$PRINTF "$FAILED\n"
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echo "$CMD1" >&2
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echo "rc=$rc1" >&2
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cat "${te}1" >&2
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numFAIL=$((numFAIL+1))
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listFAIL="$listFAIL $N"
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elif echo "$da" |diff -q - $tf; then
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$PRINTF "$OK\n"
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numOK=$((numOK+1))
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else
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$PRINTF "$FAILED\n"
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echo "$CMD1" >&2
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cat "${te}1" >&2
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echo "$da" |diff - "$tf" >&2
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numFAIL=$((numFAIL+1))
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listFAIL="$listFAIL $N"
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fi
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fi # NUMCOND
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;;
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esac
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PORT=$((PORT+1))
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N=$((N+1))
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NAME=OPENSSLREAD
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# socat determined availability of data using select(). With openssl, the
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# following situation might occur:
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119
xio-unix.c
119
xio-unix.c
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@ -73,13 +73,13 @@ static const struct xioaddr_endpoint_desc xioendpoint_abstract_client1 = { XIOA
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const union xioaddr_desc *xioaddrs_abstract_client[] = { (union xioaddr_desc *)&xioendpoint_abstract_client1, NULL };
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#endif /* WITH_ABSTRACT_UNIXSOCKET */
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const struct optdesc xioopt_unix_tightsocklen = { "unix-tightsocklen", "tightsocklen", OPT_UNIX_TIGHTSOCKLEN, GROUP_SOCK_UNIX, PH_INIT, TYPE_BOOL, OFUNC_SPEC, 0, 0 };
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const struct optdesc xioopt_unix_tightsocklen = { "unix-tightsocklen", "tightsocklen", OPT_UNIX_TIGHTSOCKLEN, GROUP_SOCK_UNIX, PH_PREBIND, TYPE_BOOL, OFUNC_OFFSET, XIO_OFFSETOF(para.socket.un.tight), XIO_SIZEOF(para.socket.un.tight) };
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/* fills the socket address struct and returns its effective length.
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abstract is usually 0; != 0 generates an abstract socket address on Linux.
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tight!=0 calculates the resulting length from the path length, not from the
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structures length; this is more common.
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structures length; this is more common (see option unix-tightsocklen)
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the struct need not be initialized when calling this function.
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*/
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socklen_t
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@ -140,7 +140,6 @@ static int xioopen_unix_listen(int argc, const char *argv[], struct opt *opts, i
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int protocol = 0;
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struct sockaddr_un us;
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socklen_t uslen;
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bool tight = true;
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struct opt *opts0 = NULL;
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pid_t pid = Getpid();
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bool opt_unlink_early = false;
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@ -152,11 +151,10 @@ static int xioopen_unix_listen(int argc, const char *argv[], struct opt *opts, i
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argv[0], argc-1);
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return STAT_NORETRY;
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}
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name = argv[1];
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xfd->para.socket.un.tight = true;
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retropt_socket_pf(opts, &pf);
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retropt_bool(opts, OPT_UNIX_TIGHTSOCKLEN, &tight);
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uslen = xiosetunix(pf, &us, name, abstract, tight);
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if (!(ABSTRACT && abstract)) {
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/* only for non abstract because abstract do not work in file system */
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@ -167,8 +165,11 @@ static int xioopen_unix_listen(int argc, const char *argv[], struct opt *opts, i
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if (applyopts_single(xfd, opts, PH_INIT) < 0) return STAT_NORETRY;
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applyopts(-1, opts, PH_INIT);
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applyopts_named(name, opts, PH_EARLY); /* umask! */
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applyopts_offset(xfd, opts);
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applyopts(-1, opts, PH_EARLY);
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uslen = xiosetunix(pf, &us, name, abstract, xfd->para.socket.un.tight);
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if (!(ABSTRACT && abstract)) {
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if (opt_unlink_early) {
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if (Unlink(name) < 0) {
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@ -229,8 +230,7 @@ static int xioopen_unix_connect(int argc, const char *argv[], struct opt *opts,
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int socktype = SOCK_STREAM;
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int protocol = 0;
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struct sockaddr_un them, us;
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socklen_t themlen, uslen;
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bool tight = true;
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socklen_t themlen, uslen = sizeof(us);
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bool needbind = false;
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bool opt_unlink_close = false;
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int result;
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@ -241,18 +241,23 @@ static int xioopen_unix_connect(int argc, const char *argv[], struct opt *opts,
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return STAT_NORETRY;
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}
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xfd->howtoshut = XIOSHUT_DOWN;
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name = argv[1];
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xfd->para.socket.un.tight = true;
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retropt_socket_pf(opts, &pf);
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retropt_bool(opts, OPT_UNIX_TIGHTSOCKLEN, &tight);
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themlen = xiosetunix(pf, &them, name, abstract, tight);
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xfd->howtoshut = XIOSHUT_DOWN;
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if (applyopts_single(xfd, opts, PH_INIT) < 0) return STAT_NORETRY;
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applyopts(-1, opts, PH_INIT);
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applyopts_offset(xfd, opts);
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applyopts(-1, opts, PH_EARLY);
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themlen = xiosetunix(pf, &them, name, abstract, xfd->para.socket.un.tight);
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if (!(ABSTRACT && abstract)) {
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/* only for non abstract because abstract do not work in file system */
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retropt_bool(opts, OPT_UNLINK_CLOSE, &opt_unlink_close);
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}
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if (retropt_bind(opts, pf, socktype, protocol, (struct sockaddr *)&us, &uslen, 0, 0, 0)
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!= STAT_NOACTION) {
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if (retropt_bind(opts, pf, socktype, protocol, (struct sockaddr *)&us, &uslen,
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(abstract<<1)|xfd->para.socket.un.tight, 0, 0) == STAT_OK) {
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needbind = true;
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}
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@ -263,10 +268,6 @@ static int xioopen_unix_connect(int argc, const char *argv[], struct opt *opts,
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xfd->opt_unlink_close = true;
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}
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if (applyopts_single(xfd, opts, PH_INIT) < 0) return -1;
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applyopts(-1, opts, PH_INIT);
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applyopts(-1, opts, PH_EARLY);
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if ((result =
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xioopen_connect(xfd,
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needbind?(struct sockaddr *)&us:NULL, uslen,
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@ -295,8 +296,7 @@ static int xioopen_unix_sendto(int argc, const char *argv[], struct opt *opts, i
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int socktype = SOCK_DGRAM;
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int protocol = 0;
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union sockaddr_union us;
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socklen_t uslen;
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bool tight = true;
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socklen_t uslen = sizeof(us);
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bool needbind = false;
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bool opt_unlink_close = false;
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int result;
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@ -312,10 +312,13 @@ static int xioopen_unix_sendto(int argc, const char *argv[], struct opt *opts, i
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retropt_int(opts, OPT_SO_TYPE, &socktype);
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retropt_bool(opts, OPT_UNIX_TIGHTSOCKLEN, &tight);
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name = argv[1];
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xfd->para.socket.un.tight = true;
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retropt_socket_pf(opts, &pf);
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xfd->salen = xiosetunix(pf, &xfd->peersa.un, name, abstract, tight);
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applyopts_offset(xfd, opts);
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xfd->salen = xiosetunix(pf, &xfd->peersa.un, name, abstract, xfd->para.socket.un.tight);
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if (!(ABSTRACT && abstract)) {
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/* only for non abstract because abstract do not work in file system */
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@ -324,8 +327,8 @@ static int xioopen_unix_sendto(int argc, const char *argv[], struct opt *opts, i
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xfd->dtype = XIODATA_RECVFROM;
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if (retropt_bind(opts, pf, socktype, protocol, &us.soa, &uslen, 0, 0, 0)
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!= STAT_NOACTION) {
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if (retropt_bind(opts, pf, socktype, protocol, &us.soa, &uslen,
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(abstract<<1)| xfd->para.socket.un.tight, 0, 0) == STAT_OK) {
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needbind = true;
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}
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@ -363,7 +366,6 @@ int xioopen_unix_recvfrom(int argc, const char *argv[], struct opt *opts,
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int protocol = 0;
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struct sockaddr_un us;
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socklen_t uslen;
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bool tight = true;
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bool needbind = true;
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bool opt_unlink_early = false;
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bool opt_unlink_close = true;
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@ -373,16 +375,16 @@ int xioopen_unix_recvfrom(int argc, const char *argv[], struct opt *opts,
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argv[0], argc-1);
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return STAT_NORETRY;
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}
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name = argv[1];
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retropt_socket_pf(opts, &pf);
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retropt_bool(opts, OPT_UNIX_TIGHTSOCKLEN, &tight);
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uslen = xiosetunix(pf, &us, name, abstract, tight);
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xfd->para.socket.un.tight = true;
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retropt_socket_pf(opts, &pf);
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retropt_int(opts, OPT_SO_TYPE, &socktype);
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retropt_bind(opts, pf, socktype, protocol, (struct sockaddr *)&us, &uslen,
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1, 0, 0);
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if (applyopts_single(xfd, opts, PH_INIT) < 0) return STAT_NORETRY;
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applyopts(-1, opts, PH_INIT);
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applyopts_named(name, opts, PH_EARLY); /* umask! */
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applyopts_offset(xfd, opts);
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retropt_bool(opts, OPT_UNLINK_EARLY, &opt_unlink_early);
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retropt_bool(opts, OPT_UNLINK_CLOSE, &opt_unlink_close);
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@ -391,6 +393,15 @@ int xioopen_unix_recvfrom(int argc, const char *argv[], struct opt *opts,
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retropt_bool(opts, OPT_UNLINK_EARLY, &opt_unlink_early);
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retropt_bool(opts, OPT_UNLINK_CLOSE, &opt_unlink_close);
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}
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applyopts(-1, opts, PH_EARLY);
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uslen = xiosetunix(pf, &us, name, abstract, xfd->para.socket.un.tight);
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#if 0
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if (retropt_bind(opts, pf, socktype, protocol, (struct sockaddr *)&us, &uslen,
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(abstract<<1)|xfd->para.socket.un.tight, 0, 0) == STAT_OK) {
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}
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#endif
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if (!(ABSTRACT && abstract)) {
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if (opt_unlink_early) {
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@ -444,7 +455,6 @@ int xioopen_unix_recv(int argc, const char *argv[], struct opt *opts,
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int protocol = 0;
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union sockaddr_union us;
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socklen_t uslen;
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bool tight = true;
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bool opt_unlink_early = false;
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bool opt_unlink_close = true;
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int result;
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@ -454,21 +464,33 @@ int xioopen_unix_recv(int argc, const char *argv[], struct opt *opts,
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argv[0], argc-1);
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return STAT_NORETRY;
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}
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name = argv[1];
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retropt_socket_pf(opts, &pf);
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retropt_bool(opts, OPT_UNIX_TIGHTSOCKLEN, &tight);
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uslen = xiosetunix(pf, &us.un, name, abstract, tight);
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#if 1 /*!!! why bind option? */
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retropt_bind(opts, pf, socktype, protocol, &us.soa, &uslen, 1, 0, 0);
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#endif
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xfd->para.socket.un.tight = true;
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retropt_socket_pf(opts, &pf);
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if (applyopts_single(xfd, opts, PH_INIT) < 0) return STAT_NORETRY;
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applyopts(-1, opts, PH_INIT);
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applyopts_named(name, opts, PH_EARLY); /* umask! */
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applyopts_offset(xfd, opts);
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if (!(ABSTRACT && abstract)) {
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/* only for non abstract because abstract do not work in file system */
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retropt_bool(opts, OPT_UNLINK_EARLY, &opt_unlink_early);
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retropt_bool(opts, OPT_UNLINK_CLOSE, &opt_unlink_close);
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}
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applyopts(-1, opts, PH_EARLY);
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uslen = xiosetunix(pf, &us.un, name, abstract, xfd->para.socket.un.tight);
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#if 0
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if (retropt_bind(opts, pf, socktype, protocol, &us.soa, &uslen,
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(abstract<<1)|xfd->para.socket.un.tight, 0, 0)
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== STAT_OK) {
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}
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#endif
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if (!(ABSTRACT && abstract)) {
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if (opt_unlink_early) {
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if (Unlink(name) < 0) {
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if (errno == ENOENT) {
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@ -531,27 +553,26 @@ _xioopen_unix_client(xiosingle_t *xfd, int xioflags, unsigned groups,
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int socktype = 0; /* to be determined by server socket type */
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int protocol = 0;
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union sockaddr_union them, us;
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socklen_t themlen, uslen;
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bool tight = true;
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socklen_t themlen, uslen = sizeof(us);
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bool needbind = false;
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bool opt_unlink_close = false;
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struct opt *opts0;
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int result;
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if (applyopts_single(xfd, opts, PH_INIT) < 0) return -1;
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applyopts(-1, opts, PH_INIT);
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xfd->para.socket.un.tight = true;
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retropt_socket_pf(opts, &pf);
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if (applyopts_single(xfd, opts, PH_INIT) < 0) return STAT_NORETRY;
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applyopts(-1, opts, PH_INIT);
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applyopts_offset(xfd, opts);
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applyopts(-1, opts, PH_EARLY);
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retropt_bool(opts, OPT_UNIX_TIGHTSOCKLEN, &tight);
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themlen = xiosetunix(pf, &them.un, name, abstract, tight);
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themlen = xiosetunix(pf, &them.un, name, abstract, xfd->para.socket.un.tight);
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if (!(ABSTRACT && abstract)) {
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/* only for non abstract because abstract do not work in file system */
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retropt_bool(opts, OPT_UNLINK_CLOSE, &opt_unlink_close);
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}
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if (retropt_bind(opts, pf, socktype, protocol, &us.soa, &uslen, 0, 0, 0)
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if (retropt_bind(opts, pf, socktype, protocol, &us.soa, &uslen,
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(abstract<<1)|xfd->para.socket.un.tight, 0, 0)
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!= STAT_NOACTION) {
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needbind = true;
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}
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3
xio.h
3
xio.h
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@ -394,6 +394,9 @@ typedef struct single {
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char *hosts_deny_table;
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#endif
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} ip;
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struct {
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bool tight;
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} un;
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#endif /* _WITH_IP4 || _WITH_IP6 */
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} socket;
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#endif /* _WITH_SOCKET */
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12
xioopts.c
12
xioopts.c
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@ -2808,7 +2808,7 @@ int retropt_string(struct opt *opts, int optcode, char **result) {
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#if _WITH_SOCKET
|
||||
/* looks for an bind option and, if found, overwrites the complete contents of
|
||||
/* looks for a bind option and, if found, overwrites the complete contents of
|
||||
sa with the appropriate value(s).
|
||||
returns STAT_OK if option exists and could be resolved,
|
||||
STAT_NORETRY if option exists but had error,
|
||||
|
|
@ -2821,7 +2821,10 @@ int retropt_bind(struct opt *opts,
|
|||
struct sockaddr *sa,
|
||||
socklen_t *salen,
|
||||
int feats, /* TCP etc: 1..address allowed,
|
||||
3..address and port allowed */
|
||||
3..address and port allowed
|
||||
UNIX (or'd): 1..tight
|
||||
2..abstract
|
||||
*/
|
||||
unsigned long res_opts0, unsigned long res_opts1) {
|
||||
const char portsep[] = ":";
|
||||
const char *ends[] = { portsep, NULL };
|
||||
|
|
@ -2889,9 +2892,10 @@ int retropt_bind(struct opt *opts,
|
|||
#if WITH_UNIX
|
||||
case AF_UNIX:
|
||||
{
|
||||
bool tight = false;
|
||||
bool abstract = (feats&2);
|
||||
bool tight = (feats&1);
|
||||
struct sockaddr_un *s_un = (struct sockaddr_un *)sa;
|
||||
*salen = xiosetunix(af, s_un, bindname, false, tight);
|
||||
*salen = xiosetunix(af, s_un, bindname, abstract, tight);
|
||||
}
|
||||
break;
|
||||
#endif /* WITH_UNIX */
|
||||
|
|
|
|||
Loading…
Reference in a new issue