import setroubleshoot-3.3.24-3.el8
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SOURCES/0001-framework-Update-translations.patch
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SOURCES/0001-framework-Update-translations.patch
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From 6fbf777bc59c005e04d4616b9aebeb7c7f0866c0 Mon Sep 17 00:00:00 2001
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From: Vit Mojzis <vmojzis@redhat.com>
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Date: Wed, 13 Jan 2021 12:43:54 +0100
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Subject: [PATCH] framework/util: optimize get_rpm_nvr_by_type by adding a
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cache
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The cache build could be optimized by assuming that all modules with
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priority 100 are part of selinux-policy-<policytype> package. This way
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the cache would only have to contain types from modules of other
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priorities.
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Another optimization would be making the cache persistent. This way it
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would only have to be rebuild on policy reload (sedispatch could trigger
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cache rebuild over dbus).
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My testing shows significant time save when processing multiple AVCs:
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setroubleshoot-server-3.3.24-1.el8:
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real 2m26.075s
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user 2m17.989s
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sys 0m5.916s
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Cache:
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real 0m15.337s
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user 0m11.004s
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sys 0m3.995s
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But curiously, there is also a small time save for individual AVCs
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(measured by forcing the cache rebuild for each call of
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get_rpm_nvr_by_type):
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real 1m40.393s
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user 1m32.830s
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sys 0m5.960s
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It could be caused by processing policy modules by lines, which quickly
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eliminates all lines not starting by "(type " (as opposed to comparing
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the regular expression with the whole file).
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---
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framework/src/setroubleshoot/util.py | 86 +++++++++++++++++++++-------
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1 file changed, 65 insertions(+), 21 deletions(-)
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diff --git a/framework/src/setroubleshoot/util.py b/framework/src/setroubleshoot/util.py
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index 023d1c4..657c882 100755
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--- a/framework/src/setroubleshoot/util.py
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+++ b/framework/src/setroubleshoot/util.py
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@@ -114,6 +114,12 @@ hex_re = re.compile('^[A-Fa-f0-9]+$')
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href_re = re.compile(r'<a\s*href="([^"]+)"[^<]*</a>')
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name_at_domain_re = re.compile(r'^([^\s@]+)@([^\s@]+)$')
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audit_decode_re = re.compile(r'^\s*"([^"]+)"\s*$')
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+# regexp matching lines containing type definitions, eg. (type lib_t)
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+# contains only 1 group that matches the type name
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+typedef_regexp = re.compile(r"\s*\(\s*type\s+([\w-]+)\s*\)\s*")
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+#Dictionary with all types defined in the module store as keys
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+#and corresponding module paths as values. Used by get_package_nvr_by_name
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+module_type_cache = None
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log_level = syslog.LOG_WARNING
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@@ -425,33 +431,71 @@ Finds an SELinux module which defines given SELinux type
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'mysql-selinux-...
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"""
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+
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+ if module_type_cache is None:
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+ build_module_type_cache()
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+ if module_type_cache is None:
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+ return None
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+
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+ path = module_type_cache.get(selinux_type, None)
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+
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+ return get_package_nvr_by_file_path(path)
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+
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+# check if given string represents an integer
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+def __str_is_int(str):
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+ try:
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+ int(str)
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+ return True
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+ except:
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+ return False
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+
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+def build_module_type_cache():
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+ """
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+Creates a dictionary with all types defined in the module store as keys
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+and corresponding module paths as values.
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+The dictionary is stored in "module_type_cache" to be used by
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+"get_rpm_nvr_by_type"
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+ """
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retval, policytype = selinux.selinux_getpolicytype()
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+
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if retval != 0:
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- return None
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- typedef = "(type {})\n".format(selinux_type)
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- modules = []
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- for (dirpath, dirnames, filenames) in os.walk("/var/lib/selinux/{}/active/modules".format(policytype)):
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- if "cil" in filenames:
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- try:
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- defined = False
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+ return
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+
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+ module_type_dict = dict()
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+
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+ priorities = []
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+
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+ # get list of module priorities, present in the module store, sorted by integer value
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+ with os.scandir("/var/lib/selinux/{}/active/modules".format(policytype)) as module_store:
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+ priorities = sorted([x.name for x in module_store if x.is_dir() and __str_is_int(x.name)], key = lambda x: int(x))
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+
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+ for dir in priorities:
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+ # find individual modules in each priority and identify type definitions
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+ for (dirpath, dirnames, filenames) in os.walk("/var/lib/selinux/{}/active/modules/{}".format(policytype,dir)):
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+ if "cil" in filenames:
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try:
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- # cil files are bzip2'ed by default
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- defined = typedef.encode() in bz2.open("{}/cil".format(dirpath))
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- except:
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- # maybe cil file is not bzip2'ed, try plain text
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- defined = typedef in open("{}/cil".format(dirpath))
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+ try:
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+ # cil files are bzip2'ed by default
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+ f = bz2.open("{}/cil".format(dirpath), mode = 'rt')
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- if defined:
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- modules.append(dirpath)
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- except:
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- # something's wrong, move on
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- # FIXME: log a problem?
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- pass
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+ except:
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+ # maybe cil file is not bzip2'ed, try plain text
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+ f = open("{}/cil".format(dirpath))
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- if len(modules) > 0:
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- return get_package_nvr_by_file_path(sorted(modules)[-1])
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+ for line in f:
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+ result = typedef_regexp.match(line)
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+ if result:
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+ module_type_dict[result.group(1)] = dirpath
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- return None
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+ f.close()
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+
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+ except:
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+ # something's wrong, move on
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+ # FIXME: log a problem?
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+ pass
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+
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+ global module_type_cache
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+ module_type_cache = module_type_dict
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def get_rpm_nvr_by_scontext(scontext, use_dbus=False):
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"""
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--
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2.29.2
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@ -0,0 +1,30 @@
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From e339956442fb7284bce31e132b0be7ad0f3badc5 Mon Sep 17 00:00:00 2001
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From: Vit Mojzis <vmojzis@redhat.com>
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Date: Tue, 2 Feb 2021 13:18:49 +0100
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Subject: [PATCH] framework/sealert: exit on any connection close
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SECommandLine is only connecting to setroubleshootd for a short time.
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Therefore any connection close from "server" side should be treated as
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error.
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This prevents "sealert" from hanging when setroubleshootd crashes.
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---
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framework/src/sealert | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/framework/src/sealert b/framework/src/sealert
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index 7839367..bae0c81 100755
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--- a/framework/src/sealert
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+++ b/framework/src/sealert
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@@ -488,7 +488,7 @@ class SECommandLine(object):
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def on_connection_state_change(self, connection, connection_state, flags, flags_added, flags_removed):
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log_debug("%s.on_connection_state_change: connection_state=%s flags_added=%s flags_removed=%s address=%s" % (self.__class__.__name__, connection_state, connection_state.flags_to_string(flags_added), connection_state.flags_to_string(flags_removed), connection.socket_address))
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- if flags_added & ConnectionState.ERROR:
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+ if (flags_added & (ConnectionState.ERROR | ConnectionState.HUP)) or (flags_removed & ConnectionState.OPEN):
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errno, strerror = connection_state.get_result()
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print("failed to connect to server: %s" % (strerror), file=sys.stderr)
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sys.exit(1)
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--
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2.29.2
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@ -1,13 +1,16 @@
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Summary: Helps troubleshoot SELinux problems
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Name: setroubleshoot
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Version: 3.3.24
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Release: 1%{?dist}
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Release: 3%{?dist}
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License: GPLv2+
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URL: https://pagure.io/setroubleshoot
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Source0: https://releases.pagure.org/setroubleshoot/%{name}-%{version}.tar.gz
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Source1: %{name}.tmpfiles
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# git format-patch -N setroubleshoot-3.3.24 -- framework
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# i=1; for j in 00*patch; do printf "Patch%04d: %s\n" $i $j; i=$((i+1));done
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Patch0001: 0001-framework-Update-translations.patch
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Patch0002: 0002-framework-util-optimize-get_rpm_nvr_by_type-by-addin.patch
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Patch0003: 0003-framework-sealert-exit-on-any-connection-close.patch
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BuildRequires: gcc
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BuildRequires: libcap-ng-devel
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BuildRequires: intltool gettext python3 python3-devel
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@ -62,7 +65,7 @@ to user preference. The same tools can be run on existing log files.
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%build
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autoreconf -f
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%configure PYTHON=%{__python3} --enable-seappletlegacy=yes --with-auditpluginsdir=/etc/audit/plugins.d
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%configure PYTHON=%{__python3} --enable-seappletlegacy=no --with-auditpluginsdir=/etc/audit/plugins.d
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make
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%install
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@ -195,19 +198,15 @@ chown -R setroubleshoot:setroubleshoot %{pkgvardatadir}
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%attr(0711,setroubleshoot,setroubleshoot) %dir %{_rundir}/setroubleshoot
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%doc AUTHORS COPYING ChangeLog DBUS.md NEWS README TODO
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%package legacy
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Summary: SELinux troubleshoot legacy applet
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Requires: gtk2
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Requires: %{name} = %{version}-%{release}
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%description legacy
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SELinux troubleshoot legacy applet
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%files legacy
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%{_bindir}/seappletlegacy
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%changelog
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* Tue Feb 02 2021 Vit Mojzis <vmojzis@redhat.com> - 3.3.24-3
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- sealert: exit on any connection close (#1875290)
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* Wed Jan 13 2021 Vit Mojzis <vmojzis@redhat.com> - 3.3.24-2
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- Optimize get_rpm_nvr_by_type by adding a cache (#1794807)
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- Stop building seappletlegacy (#1878792)
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- Update translations
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* Wed Aug 12 2020 Vit Mojzis <vmojzis@redhat.com> - 3.3.24-1
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- Add 'fur' into shipped locales
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- Update translations (#1820570)
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