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- Log ----------------------------------------------------------------- commit 1842f3dccbd58393ef0599acd9af26be792a76b2 Author: Peter Müller peter.mueller@ipfire.org Date: Sat Jul 1 19:31:45 2023 +0000

Core Update 177: Ship squid-asnbl and restart Squid

Signed-off-by: Peter Müller peter.mueller@ipfire.org

commit df30842927aac053cd669cee8105d2f39345c3b1 Author: Adolf Belka adolf.belka@ipfire.org Date: Wed Mar 22 19:28:52 2023 +0100

squid-asnbl: Fix for bug#13023 - squid-asnbl-helper segfaulting and shutdown squid

- Patch provided by bug reporter. Here is the description of the problem from the bug. First I discovered that the helper only sometimes throwing the error and quits even for the same values and queries. Also the timespan until the error happens was quite different for every restart of squid (minutes to hours). And it does not depend on the traffic on the proxy, even one connection could cause a crash while ten or hundrets won't. After a few days of testing different solutions and done a lot of debugging, redesigning the function did not fully solve the problem. Such standard things like checking the result variable for NULL (or it's equivalent "is None" in python) before evaluating it's subfunction produces the exact same error message. But with that knowledge it more and more turns out that python3 sometimes 'detects' the local return variable if it was a misused global. So for a full fix, the return variable also has to be initialized that python3 won't detect it's usage as an 'UnboundLocalError' to succesfully fix this bug. - LFS file updated to run patch before copying helper into place. - Update of rootfile not needed. - Bug reporter has been requested to raise this issue at the git repo for squid-asnbl.

Fixes: Bug#13023 Tested-by: Nicolas Pӧhlmann business@hardcoretec.com Signed-off-by: Adolf Belka adolf.belka@ipfire.org

-----------------------------------------------------------------------

Summary of changes: .../161 => core/177}/filelists/squid-asnbl | 0 config/rootfiles/core/177/update.sh | 3 + lfs/squid-asnbl | 1 + ...ariables_to_make_compatible_with_python_3.patch | 100 +++++++++++++++++++++ 4 files changed, 104 insertions(+) copy config/rootfiles/{oldcore/161 => core/177}/filelists/squid-asnbl (100%) create mode 100644 src/patches/squid/squid-asnbl-0.2.4_initialise_global_variables_to_make_compatible_with_python_3.patch

Difference in files: diff --git a/config/rootfiles/core/177/filelists/squid-asnbl b/config/rootfiles/core/177/filelists/squid-asnbl new file mode 120000 index 000000000..4db918824 --- /dev/null +++ b/config/rootfiles/core/177/filelists/squid-asnbl @@ -0,0 +1 @@ +../../../common/squid-asnbl \ No newline at end of file diff --git a/config/rootfiles/core/177/update.sh b/config/rootfiles/core/177/update.sh index b5090902a..a0b2da0fe 100644 --- a/config/rootfiles/core/177/update.sh +++ b/config/rootfiles/core/177/update.sh @@ -49,6 +49,9 @@ ldconfig

# Start services /etc/init.d/ntp restart +if [ -f /var/ipfire/proxy/enable ]; then + /etc/init.d/squid restart +fi

# This update needs a reboot... #touch /var/run/need_reboot diff --git a/lfs/squid-asnbl b/lfs/squid-asnbl index 130b28460..b003d605b 100644 --- a/lfs/squid-asnbl +++ b/lfs/squid-asnbl @@ -75,6 +75,7 @@ $(subst %,%_BLAKE2,$(objects)) : $(TARGET) : $(patsubst %,$(DIR_DL)/%,$(objects)) @$(PREBUILD) @rm -rf $(DIR_APP) && cd $(DIR_SRC) && tar zvxf $(DIR_DL)/$(DL_FILE) + cd $(DIR_APP) && patch -Np1 -i $(DIR_SRC)/src/patches/squid/squid-asnbl-0.2.4_initialise_global_variables_to_make_compatible_with_python_3.patch

# Install ASNBL helper script cd $(DIR_APP) && install -o root -g root -m 0755 asnbl-helper.py /usr/bin/asnbl-helper.py diff --git a/src/patches/squid/squid-asnbl-0.2.4_initialise_global_variables_to_make_compatible_with_python_3.patch b/src/patches/squid/squid-asnbl-0.2.4_initialise_global_variables_to_make_compatible_with_python_3.patch new file mode 100644 index 000000000..e540d4e76 --- /dev/null +++ b/src/patches/squid/squid-asnbl-0.2.4_initialise_global_variables_to_make_compatible_with_python_3.patch @@ -0,0 +1,100 @@ +--- squid-asnbl-0.2.4/asnbl-helper_orig.py ++++ squid-asnbl-0.2.4/asnbl-helper.py +@@ -172,17 +172,19 @@ + return parsedasns + + +-def resolve_asn(ipaddr: str, asndb): +- """ Function call: resolve_asn(IP address to be resolved, +- ASN database instance object) +- This function looks up the Autonomous System for the given IP address. It expects +- an IPFire location database object to be passed as a second parameter, hence relying +- on another function to set that up. """ ++def resolve_asn(ipaddr: str): ++ """ Function call: resolve_asn(IP address to be resolved) ++ This function looks up the Autonomous System for the given IP address. """ ++ ++ # Fix for #13023 ++ # Initialize the result variable before it's first use, otherwise python3 ++ # will sometimes detect a 'mismatch' using global and local variables ++ lookup_result = None + + # libloc cannot handle ipaddress objects here, so casting into a string is necessary + # for good measure, to avoid exceptions here... + try: +- result = asndb.lookup(str(ipaddr)) ++ lookup_result = ASNDB.lookup(str(ipaddr)) + except BlockingIOError: + # XXX: Prevent likely libloc bug from causing this helper to crash + # (see upstream bug https://bugzilla.ipfire.org/show_bug.cgi?id=13023) +@@ -190,21 +192,25 @@ + + # In case nothing was returned above, satisfy result expectation to this function... + try: +- if not result.asn: ++ if not lookup_result.asn: + return 0 + except AttributeError: + return 0 + +- return result.asn +- +- +-def asndb_response_tests(testdata: str, asndb): +- """ Function call: asndb_response_tests(response rest data, +- ASN database instance object) ++ return lookup_result.asn ++ ++ ++def asndb_response_tests(testdata: str): ++ """ Function call: asndb_response_tests(response rest data) + + This function asserts the given ASN database to return expected ASNs for + given IP addresses in order to be considered operational. It returns + True if this test succeeds, and False otherwise. """ ++ ++ # Fix for #13023 ++ # Initialize the result variable before it's first use, otherwise python3 ++ # will sometimes detect a 'mismatch' using global and local variables ++ lookup_result_test = None + + tresult = True + +@@ -216,13 +222,13 @@ + + for stestdata in ptdata: + LOGIT.debug("Running response test for '%s' against ASNDB '%s' ...", +- stestdata, asndb) +- +- returndata = resolve_asn(stestdata[0], asndb) +- +- if returndata != int(stestdata[1]): ++ stestdata, ASNDB) ++ ++ lookup_result_test = resolve_asn(stestdata[0]) ++ ++ if lookup_result_test != int(stestdata[1]): + LOGIT.error("Response test failed for ASNDB '%s' (tuple: %s), aborting", +- asndb, stestdata) ++ ASNDB, stestdata) + tresult = False + break + +@@ -428,7 +434,7 @@ + ASNDB = set_up_location_database(config["GENERAL"]["ASNDB_PATH"]) + + LOGIT.debug("Running ASN database response tests...") +-if asndb_response_tests(config["GENERAL"]["TESTDATA"], ASNDB): ++if asndb_response_tests(config["GENERAL"]["TESTDATA"]): + LOGIT.debug("ASN database operational - excellent. Waiting for input...") + else: + LOGIT.error("ASN database response tests failed, aborting") +@@ -490,7 +496,7 @@ + ASNS = [] + for singleip in IPS: + # Enumerate ASN for this IP address... +- resolvedasn = resolve_asn(singleip, ASNDB) ++ resolvedasn = resolve_asn(singleip) + + # In case protection against destinations without public AS announcements for their + # IP addresses is desired, the query will be denied in case ASN = 0 appears in an

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