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OpenSSL option compress allows to disable compression
This commit is contained in:
Gerhard Rieger
parent
9e0c4e1df5
commit
7e3386f228
10 changed files with 244 additions and 8 deletions
4
CHANGES
4
CHANGES
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@ -93,6 +93,10 @@ new features:
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Till Maas added support for tun/tap addresses without IP address
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added an option openssl-compress that allows to disable the compression
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feature of newer OpenSSL versions. Thanks to Michael Hanselmann for
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providing this contribution (sponsored by Google Inc.)
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####################### V 1.7.1.3:
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security:
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@ -10,7 +10,7 @@ def(Filan)(0)(bf(Filan))
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def(procan)(0)(bf(procan))
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def(Procan)(0)(bf(Procan))
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manpage(socat)(1)(Jan 2010)()()
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manpage(socat)(1)(Oct 2010)()()
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whenhtml(
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label(CONTENTS)
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@ -2665,6 +2665,13 @@ label(OPTION_OPENSSL_FIPS)dit(bf(tt(fips)))
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This mode might require that the involved certificates are generated with a
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FIPS enabled version of openssl. Setting or clearing this option on one
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socat address affects all OpenSSL addresses of this process.
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label(OPTION_OPENSSL_COMPRESS)dit(bf(tt(compress)))
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Enable or disable the use of compression for a connection. Setting this to
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"none" disables compression, setting it to "auto" lets OpenSSL choose the best
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available algorithm supported by both parties. The default is to not touch any
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compression-related settings.
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NOTE: Requires OpenSSL 0.9.8 or higher and disabling compression with
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OpenSSL 0.9.8 affects all new connections in the process.
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enddit()
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startdit()enddit()nl()
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19
doc/xio.help
19
doc/xio.help
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@ -1,5 +1,5 @@
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# source: xio.help
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# Copyright Gerhard Rieger 2001-2007
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# Copyright Gerhard Rieger 2001-2010
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Operating systems:
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@ -4610,6 +4610,23 @@ FIPS enabled version of openssl. Setting or clearing this option on one
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socat address affects all OpenSSL addresses of this process.
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Option: openssl-compress
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Aliases: compress
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Type: STRING
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Option group: OPENSSL
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Phase: SPEC
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Platforms: (depends on openssl installation)
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Enable or disable the use of compression for a connection. Setting this to
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"none" disables compression, setting it to "auto" lets OpenSSL choose the best
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available algorithm supported by both parties. The default is to not touch any
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compression-related settings.
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NOTE: Requires OpenSSL 0.9.8 or higher.
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NOTE: Disabling compression with OpenSSL 0.9.8 affects all new connections in
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the same process.
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===============================================================================
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Application specific address options
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40
sslcls.c
40
sslcls.c
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@ -1,5 +1,5 @@
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/* source: sslcls.c */
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/* Copyright Gerhard Rieger 2001-2007 */
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/* Copyright Gerhard Rieger 2001-2010 */
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/* Published under the GNU General Public License V.2, see file COPYING */
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/* explicit system call and C library trace function, for those who miss strace
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@ -315,4 +315,42 @@ int sycFIPS_mode_set(int onoff) {
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}
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#endif /* WITH_FIPS */
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#if OPENSSL_VERSION_NUMBER >= 0x00908000L
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const COMP_METHOD *sycSSL_get_current_compression(SSL *ssl) {
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const COMP_METHOD *result;
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Debug1("SSL_get_current_compression(%p)", ssl);
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result = SSL_get_current_compression(ssl);
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if (result) {
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Debug1("SSL_get_current_compression() -> %p", result);
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} else {
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Debug("SSL_get_current_compression() -> NULL");
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}
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return result;
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}
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const COMP_METHOD *sycSSL_get_current_expansion(SSL *ssl) {
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const COMP_METHOD *result;
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Debug1("SSL_get_current_expansion(%p)", ssl);
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result = SSL_get_current_expansion(ssl);
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if (result) {
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Debug1("SSL_get_current_expansion() -> %p", result);
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} else {
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Debug("SSL_get_current_expansion() -> NULL");
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}
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return result;
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}
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const char *sycSSL_COMP_get_name(const COMP_METHOD *comp) {
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const char *result;
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Debug1("SSL_COMP_get_name(%p)", comp);
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result = SSL_COMP_get_name(comp);
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if (result) {
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Debug1("SSL_COMP_get_name() -> \"%s\"", result);
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} else {
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Debug("SSL_COMP_get_name() -> NULL");
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}
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return result;
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}
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#endif
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#endif /* WITH_SYCLS && WITH_OPENSSL */
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12
sslcls.h
12
sslcls.h
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@ -1,5 +1,5 @@
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/* source: sslcls.h */
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/* Copyright Gerhard Rieger 2001-2007 */
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/* Copyright Gerhard Rieger 2001-2010 */
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/* Published under the GNU General Public License V.2, see file COPYING */
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#ifndef __sslcls_h_included
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@ -49,6 +49,12 @@ BIO *sycBIO_new_file(const char *filename, const char *mode);
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int sycFIPS_mode_set(int onoff);
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#if OPENSSL_VERSION_NUMBER >= 0x00908000L
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const COMP_METHOD *sycSSL_get_current_compression(SSL *ssl);
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const COMP_METHOD *sycSSL_get_current_expansion(SSL *ssl);
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const char *sycSSL_COMP_get_name(const COMP_METHOD *comp);
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#endif
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#endif /* WITH_OPENSSL */
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#else /* !WITH_SYCLS */
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@ -92,6 +98,10 @@ int sycFIPS_mode_set(int onoff);
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#define sycBIO_new_file(f,m) BIO_new_file(f,m)
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#define sycSSL_get_current_compression(s) SSL_get_current_compression(s)
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#define sycSSL_get_current_expansion(s) SSL_get_current_expansion(s)
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#define sycSSL_COMP_get_name(c) SSL_COMP_get_name(c)
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#endif /* WITH_OPENSSL */
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#define sycFIPS_mode_set(o) FIPS_mode_set(o)
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59
test.sh
59
test.sh
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@ -476,6 +476,9 @@ filloptionvalues() {
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case "$OPTS" in
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*,egd,*) OPTS=$(echo "$OPTS" |sed "s/,egd,/,egd=/tmp/hugo,/g");;
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esac
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case "$OPTS" in
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*,compress,*) OPTS=$(echo "$OPTS" |sed "s/,compress,/,compress=none,/g");;
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esac
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# PROXY
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case "$OPTS" in
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*,proxyauth,*) OPTS=$(echo "$OPTS" |sed "s/,proxyauth,/,proxyauth=user:pass,/g");;
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@ -3981,6 +3984,62 @@ PORT=$((PORT+1))
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N=$((N+1))
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NAME=OPENSSL_COMPRESS
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case "$TESTS" in
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*%functions%*|*%openssl%*|*%tcp%*|*%tcp4%*|*%ip4%*|*%$NAME%*)
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TEST="$NAME: OpenSSL compression"
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if ! eval $NUMCOND; then :;
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elif ! testaddrs openssl >/dev/null; then
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$PRINTF "test $F_n $TEST... ${YELLOW}OPENSSL not available${NORMAL}\n" $N
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numCANT=$((numCANT+1))
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elif ! testaddrs listen tcp ip4 >/dev/null || ! runsip4 >/dev/null; then
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$PRINTF "test $F_n $TEST... ${YELLOW}TCP/IPv4 not available${NORMAL}\n" $N
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numCANT=$((numCANT+1))
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elif ! testoptions openssl-compress >/dev/null; then
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$PRINTF "test $F_n $TEST... ${YELLOW}OPENSSL compression option not available${NORMAL}\n" $N
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numCANT=$((numCANT+1))
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else
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gentestcert testsrv
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printf "test $F_n $TEST... " $N
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tf="$td/test$N.stdout"
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te="$td/test$N.stderr"
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tdiff="$td/test$N.diff"
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da="test$N $(date) $RANDOM"
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success=yes
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for srccompr in '' compress=auto compress=none; do
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for dstcompr in '' compress=auto compress=none; do
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CMD2="$SOCAT $opts OPENSSL-LISTEN:$PORT,pf=ip4,reuseaddr,$SOCAT_EGD,cert=testsrv.crt,key=testsrv.key,verify=0,$dstcompr pipe"
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CMD="$SOCAT $opts - openssl:$LOCALHOST:$PORT,pf=ip4,verify=0,$SOCAT_EGD,$srccompr"
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eval "$CMD2 2>\"${te}1\" &"
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pid=$! # background process id
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waittcp4port $PORT
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echo "$da" | $CMD >$tf 2>"${te}2"
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kill $pid 2>/dev/null
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if ! echo "$da" |diff - "$tf" >"$tdiff"; then
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success=
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break
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fi
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done
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done
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if test -z "$success"; then
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$PRINTF "$FAILED: $SOCAT:\n"
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echo "$CMD2 &"
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echo "$CMD"
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cat "${te}1"
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cat "${te}2"
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cat "$tdiff"
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numFAIL=$((numFAIL+1))
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else
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$PRINTF "$OK\n"
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if [ -n "$debug" ]; then cat "${te}1" "${te}2"; fi
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numOK=$((numOK+1))
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fi
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fi ;; # NUMCOND, feats
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esac
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PORT=$((PORT+1))
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N=$((N+1))
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NAME=SOCKS4CONNECT_TCP4
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case "$TESTS" in
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*%functions%*|*%socks%*|*%socks4%*|*%tcp%*|*%tcp4%*|*%ip4%*|*%$NAME%*)
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@ -104,6 +104,9 @@ const struct optdesc opt_openssl_cafile = { "openssl-cafile", "cafile",
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const struct optdesc opt_openssl_capath = { "openssl-capath", "capath", OPT_OPENSSL_CAPATH, GROUP_OPENSSL, PH_SPEC, TYPE_FILENAME, OFUNC_SPEC };
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const struct optdesc opt_openssl_egd = { "openssl-egd", "egd", OPT_OPENSSL_EGD, GROUP_OPENSSL, PH_SPEC, TYPE_FILENAME, OFUNC_SPEC };
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const struct optdesc opt_openssl_pseudo = { "openssl-pseudo", "pseudo", OPT_OPENSSL_PSEUDO, GROUP_OPENSSL, PH_SPEC, TYPE_BOOL, OFUNC_SPEC };
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#if OPENSSL_VERSION_NUMBER >= 0x00908000L
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const struct optdesc opt_openssl_compress = { "openssl-compress", "compress", OPT_OPENSSL_COMPRESS, GROUP_OPENSSL, PH_SPEC, TYPE_STRING, OFUNC_SPEC };
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#endif
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#if WITH_FIPS
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const struct optdesc opt_openssl_fips = { "openssl-fips", "fips", OPT_OPENSSL_FIPS, GROUP_OPENSSL, PH_SPEC, TYPE_BOOL, OFUNC_SPEC };
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#endif
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@ -134,6 +137,24 @@ int xio_reset_fips_mode(void) {
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#define xio_reset_fips_mode() 0
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#endif
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static void openssl_conn_loginfo(SSL *ssl) {
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Notice1("SSL connection using %s", SSL_get_cipher(ssl));
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#if OPENSSL_VERSION_NUMBER >= 0x00908000L
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{
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const COMP_METHOD *comp, *expansion;
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comp = sycSSL_get_current_compression(ssl);
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expansion = sycSSL_get_current_expansion(ssl);
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Notice1("SSL connection compression \"%s\"",
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comp?sycSSL_COMP_get_name(comp):"none");
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Notice1("SSL connection expansion \"%s\"",
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expansion?sycSSL_COMP_get_name(expansion):"none");
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}
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#endif
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}
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/* the open function for OpenSSL client */
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static int
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xioopen_openssl_connect(int argc,
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@ -304,7 +325,7 @@ static int
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break;
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} while (true); /* drop out on success */
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Notice1("SSL connection using %s", SSL_get_cipher(xfd->para.openssl.ssl));
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openssl_conn_loginfo(xfd->para.openssl.ssl);
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/* fill in the fd structure */
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return STAT_OK;
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@ -501,8 +522,7 @@ static int
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return result;
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}
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Notice1("SSL connection using %s",
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SSL_get_cipher(xfd->para.openssl.ssl));
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openssl_conn_loginfo(xfd->para.openssl.ssl);
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break;
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} /* drop out on success */
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@ -606,6 +626,59 @@ int _xioopen_openssl_listen(struct single *xfd,
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#endif /* WITH_LISTEN */
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#if OPENSSL_VERSION_NUMBER >= 0x00908000L
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/* In OpenSSL 0.9.7 compression methods could be added using
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* SSL_COMP_add_compression_method(3), but the implemntation is not compatible
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* with the standard (RFC3749).
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*/
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static int openssl_setup_compression(SSL_CTX *ctx, char *method)
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{
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STACK_OF(SSL_COMP)* comp_methods;
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assert(method);
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/* Getting the stack of compression methods has the intended side-effect of
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* initializing the SSL library's compression part.
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*/
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comp_methods = SSL_COMP_get_compression_methods();
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if (!comp_methods) {
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Info("OpenSSL built without compression support");
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return STAT_OK;
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}
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if (strcasecmp(method, "auto") == 0) {
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Info("Using default OpenSSL compression");
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return STAT_OK;
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}
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if (strcasecmp(method, "none") == 0) {
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/* Disable compression */
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#ifdef SSL_OP_NO_COMPRESSION
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Info("Disabling OpenSSL compression");
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SSL_CTX_set_options(ctx, SSL_OP_NO_COMPRESSION);
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#else
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/* SSL_OP_NO_COMPRESSION was only introduced in OpenSSL 0.9.9 (released
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* as 1.0.0). Removing all compression methods is a work-around for
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* earlier versions of OpenSSL, but it affects all SSL connections.
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*/
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Info("Disabling OpenSSL compression globally");
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sk_SSL_COMP_zero(comp_methods);
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#endif
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return STAT_OK;
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}
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/* zlib compression in OpenSSL before version 0.9.8e-beta1 uses the libc's
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* default malloc/free instead of the ones passed to OpenSSL. Should socat
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* ever use custom malloc/free functions for OpenSSL, this must be taken
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* into consideration. See OpenSSL bug #1468.
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*/
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Error1("openssl-compress=\"%s\": unknown compression method", method);
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return STAT_NORETRY;
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}
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#endif
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int
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_xioopen_openssl_prepare(struct opt *opts,
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struct single *xfd,/* a xio file descriptor
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@ -625,6 +698,9 @@ int
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char *opt_cafile = NULL; /* certificate authority file */
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char *opt_capath = NULL; /* certificate authority directory */
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char *opt_egd = NULL; /* entropy gathering daemon socket path */
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#if OPENSSL_VERSION_NUMBER >= 0x00908000L
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char *opt_compress = NULL; /* compression method */
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#endif
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bool opt_pseudo = false; /* use pseudo entropy if nothing else */
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unsigned long err;
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int result;
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@ -642,6 +718,9 @@ int
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retropt_string(opts, OPT_OPENSSL_DHPARAM, &opt_dhparam);
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retropt_string(opts, OPT_OPENSSL_EGD, &opt_egd);
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retropt_bool(opts,OPT_OPENSSL_PSEUDO, &opt_pseudo);
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#if OPENSSL_VERSION_NUMBER >= 0x00908000L
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retropt_string(opts, OPT_OPENSSL_COMPRESS, &opt_compress);
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#endif
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#if WITH_FIPS
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if (opt_fips) {
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@ -783,6 +862,16 @@ int
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}
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}
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#if OPENSSL_VERSION_NUMBER >= 0x00908000L
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if (opt_compress) {
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int result;
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result = openssl_setup_compression(*ctx, opt_compress);
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if (result != STAT_OK) {
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return result;
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}
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}
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#endif
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if (opt_cafile != NULL || opt_capath != NULL) {
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if (sycSSL_CTX_load_verify_locations(*ctx, opt_cafile, opt_capath) != 1) {
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int result;
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@ -1,5 +1,5 @@
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/* source: xio-openssl.h */
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/* Copyright Gerhard Rieger 2002-2007 */
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/* Copyright Gerhard Rieger 2002-2010 */
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/* Published under the GNU General Public License V.2, see file COPYING */
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#ifndef __xio_openssl_included
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@ -23,6 +23,9 @@ extern const struct optdesc opt_openssl_cafile;
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extern const struct optdesc opt_openssl_capath;
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extern const struct optdesc opt_openssl_egd;
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extern const struct optdesc opt_openssl_pseudo;
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#if OPENSSL_VERSION_NUMBER >= 0x00908000L
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extern const struct optdesc opt_openssl_compress;
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#endif
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#if WITH_FIPS
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extern const struct optdesc opt_openssl_fips;
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#endif
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@ -293,6 +293,9 @@ const struct optname optionnames[] = {
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#if WITH_EXT2 && defined(EXT2_COMPR_FL)
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IF_ANY ("compr", &opt_ext2_compr)
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#endif
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#if OPENSSL_VERSION_NUMBER >= 0x00908000L
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IF_OPENSSL("compress", &opt_openssl_compress)
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#endif
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#ifdef TCP_CONN_ABORT_THRESHOLD /* HP_UX */
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IF_TCP ("conn-abort-threshold", &opt_tcp_conn_abort_threshold)
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#endif
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@ -1085,6 +1088,9 @@ const struct optname optionnames[] = {
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IF_OPENSSL("openssl-capath", &opt_openssl_capath)
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IF_OPENSSL("openssl-certificate", &opt_openssl_certificate)
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IF_OPENSSL("openssl-cipherlist", &opt_openssl_cipherlist)
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#if OPENSSL_VERSION_NUMBER >= 0x00908000L
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IF_OPENSSL("openssl-compress", &opt_openssl_compress)
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#endif
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IF_OPENSSL("openssl-dhparam", &opt_openssl_dhparam)
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IF_OPENSSL("openssl-egd", &opt_openssl_egd)
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#if WITH_FIPS
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@ -473,6 +473,9 @@ enum e_optcode {
|
|||
OPT_OPENSSL_CAPATH,
|
||||
OPT_OPENSSL_CERTIFICATE,
|
||||
OPT_OPENSSL_CIPHERLIST,
|
||||
#if OPENSSL_VERSION_NUMBER >= 0x00908000L
|
||||
OPT_OPENSSL_COMPRESS,
|
||||
#endif
|
||||
OPT_OPENSSL_DHPARAM,
|
||||
OPT_OPENSSL_EGD,
|
||||
OPT_OPENSSL_FIPS,
|
||||
|
|
|
|||
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Reference in a new issue