mirror of
https://gitlab.com/apparmor/apparmor.git
synced 2025-03-04 08:24:42 +01:00
dd44858e60
This patch implements parsing of fine grained mediation for unix domain
sockets, that have abstract and anonymous paths. Sockets with file
system paths are handled by regular file access rules.
The unix network rules follow the general fine grained network
rule pattern of
[<qualifiers>] af_name [<access expr>] [<rule conds>] [<local expr>] [<peer expr>]
specifically for af_unix this is
[<qualifiers>] 'unix' [<access expr>] [<rule conds>] [<local expr>] [<peer expr>]
<qualifiers> = [ 'audit' ] [ 'allow' | 'deny' ]
<access expr> = ( <access> | <access list> )
<access> = ( 'server' | 'create' | 'bind' | 'listen' | 'accept' |
'connect' | 'shutdown' | 'getattr' | 'setattr' |
'getopt' | 'setopt' |
'send' | 'receive' | 'r' | 'w' | 'rw' )
(some access modes are incompatible with some rules or require additional
parameters)
<access list> = '(' <access> ( [','] <WS> <access> )* ')'
<WS> = white space
<rule conds> = ( <type cond> | <protocol cond> )*
each cond can appear at most once
<type cond> = 'type' '=' ( <AARE> | '(' ( '"' <AARE> '"' | <AARE> )+ ')' )
<protocol cond> = 'protocol' '=' ( <AARE> | '(' ( '"' <AARE> '"' | <AARE> )+ ')' )
<local expr> = ( <path cond> | <attr cond> | <opt cond> )*
each cond can appear at most once
<peer expr> = 'peer' '=' ( <path cond> | <label cond> )+
each cond can appear at most once
<path cond> = 'path' '=' ( <AARE> | '(' '"' <AARE> '"' | <AARE> ')' )
<label cond> = 'label' '=' ( <AARE> | '(' '"' <AARE> '"' | <AARE> ')')
<attr cond> = 'attr' '=' ( <AARE> | '(' '"' <AARE> '"' | <AARE> ')' )
<opt cond> = 'opt' '=' ( <AARE> | '(' '"' <AARE> '"' | <AARE> ')' )
<AARE> = ?*[]{}^ ( see man page )
unix domain socket rules are accumulated so that the granted unix
socket permissions are the union of all the listed unix rule permissions.
unix domain socket rules are broad and general and become more restrictive
as further information is specified. Policy may be specified down to
the path and label level. The content of the communication is not
examined.
Some permissions are not compatible with all unix rules.
unix socket rule permissions are implied when a rule does not explicitly
state an access list. By default if a rule does not have an access list
all permissions that are compatible with the specified set of local
and peer conditionals are implied.
The 'server', 'r', 'w' and 'rw' permissions are aliases for other permissions.
server = (create, bind, listen, accept)
r = (receive, getattr, getopt)
w = (create, connect, send, setattr, setopt)
In addition it supports the v7 kernel abi semantics around generic
network rules. The v7 abi removes the masking unix and netlink
address families from the generic masking and uses fine grained
mediation for an address type if supplied.
This means that the rules
network unix,
network netlink,
are now enforced instead of ignored. The parser previously could accept
these but the kernel would ignore anything written to them. If a network
rule is supplied it takes precedence over the finer grained mediation
rule. If permission is not granted via a broad network access rule
fine grained mediation is applied.
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-by: Seth Arnold <seth.arnold@canonical.com>
380 lines
12 KiB
Makefile
380 lines
12 KiB
Makefile
# ----------------------------------------------------------------------
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# Copyright (c) 1999, 2000, 2001, 2002, 2004, 2005, 2006, 2007
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# NOVELL (All rights reserved)
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of version 2 of the GNU General Public
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# License published by the Free Software Foundation.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, contact Novell, Inc.
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# ----------------------------------------------------------------------
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NAME=apparmor-parser
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all:
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COMMONDIR=../common/
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include common/Make.rules
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COMMONDIR_EXISTS=$(strip $(shell [ -d ${COMMONDIR} ] && echo true))
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ifeq ($(COMMONDIR_EXISTS), true)
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common/Make.rules: $(COMMONDIR)/Make.rules
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ln -sf $(COMMONDIR) .
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endif
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DESTDIR=/
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APPARMOR_BIN_PREFIX=${DESTDIR}/lib/apparmor
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CONFDIR=/etc/apparmor
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INSTALL_CONFDIR=${DESTDIR}${CONFDIR}
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LOCALEDIR=/usr/share/locale
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MANPAGES=apparmor.d.5 apparmor.7 apparmor_parser.8 subdomain.conf.5
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YACC := /usr/bin/bison
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YFLAGS := -d
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LEX := /usr/bin/flex
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LEXFLAGS = -B -v
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WARNINGS = -Wall
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EXTRA_WARNINGS = -Wsign-compare -Wmissing-field-initializers -Wformat-security -Wunused-parameter
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CXX_WARNINGS = ${WARNINGS} $(shell for warning in ${EXTRA_WARNINGS} ; do \
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if ${CXX} $${warning} -S -o /dev/null -xc /dev/null >/dev/null 2>&1; then \
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echo "$${warning}"; \
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fi ; \
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done)
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CPP_WARNINGS =
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ifndef CFLAGS
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CFLAGS = -g -O2 -pipe
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ifdef DEBUG
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CFLAGS += -pg -D DEBUG
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endif
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ifdef COVERAGE
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CFLAGS = -g -pg -fprofile-arcs -ftest-coverage
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endif
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endif #CFLAGS
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EXTRA_CXXFLAGS = ${CFLAGS} ${CXX_WARNINGS} -std=gnu++0x -D_GNU_SOURCE
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EXTRA_CFLAGS = ${EXTRA_CXXFLAGS} ${CPP_WARNINGS}
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#LEXLIB := -lfl
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# override this on the make command to point to where the immunix.h file is
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# (yeah this is lame, but since we are tied to the kernel so tightly...)
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#INCLUDEDIR = /usr/src/linux/include
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INCLUDEDIR =
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ifdef INCLUDEDIR
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CFLAGS += -I$(INCLUDEDIR)
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endif
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# Internationalization support. Define a package and a LOCALEDIR
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EXTRA_CFLAGS+=-DPACKAGE=\"${NAME}\" -DLOCALEDIR=\"${LOCALEDIR}\"
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# Compile-time configuration of the location of the config file
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EXTRA_CFLAGS+=-DSUBDOMAIN_CONFDIR=\"${CONFDIR}\"
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SRCS = parser_common.c parser_include.c parser_interface.c parser_lex.c \
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parser_main.c parser_misc.c parser_merge.c parser_symtab.c \
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parser_yacc.c parser_regex.c parser_variable.c parser_policy.c \
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parser_alias.c common_optarg.c lib.c network.c \
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mount.cc dbus.cc profile.cc rule.cc signal.cc ptrace.cc \
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af_rule.cc af_unix.cc
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HDRS = parser.h parser_include.h immunix.h mount.h dbus.h lib.h profile.h \
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rule.h common_optarg.h signal.h ptrace.h network.h af_rule.h af_unix.h
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TOOLS = apparmor_parser
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OBJECTS = $(SRCS:.c=.o)
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AAREDIR= libapparmor_re
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AAREOBJECT = ${AAREDIR}/libapparmor_re.a
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AAREOBJECTS = $(AAREOBJECT)
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AARE_LDFLAGS = -static-libgcc -static-libstdc++ -L.
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AALIB = -Wl,-Bstatic -lapparmor -Wl,-Bdynamic -lpthread
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ifdef USE_SYSTEM
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# Using the system libapparmor so Makefile dependencies can't be used
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LIBAPPARMOR_A =
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INCLUDE_APPARMOR =
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APPARMOR_H =
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else
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LIBAPPARMOR_SRC = ../libraries/libapparmor/
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LOCAL_LIBAPPARMOR_INCLUDE = $(LIBAPPARMOR_SRC)/include
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LOCAL_LIBAPPARMOR_LDPATH = $(LIBAPPARMOR_SRC)/src/.libs
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LIBAPPARMOR_A = $(LOCAL_LIBAPPARMOR_LDPATH)/libapparmor.a
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INCLUDE_APPARMOR = -I$(LOCAL_LIBAPPARMOR_INCLUDE)
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AARE_LDFLAGS += -L$(LOCAL_LIBAPPARMOR_LDPATH)
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APPARMOR_H = $(LOCAL_LIBAPPARMOR_INCLUDE)/sys/apparmor.h
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endif
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EXTRA_CFLAGS += $(INCLUDE_APPARMOR)
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LEX_C_FILES = parser_lex.c
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YACC_C_FILES = parser_yacc.c parser_yacc.h
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TESTS = tst_regex tst_misc tst_symtab tst_variable tst_lib
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TEST_CFLAGS = $(EXTRA_CFLAGS) -DUNIT_TEST -Wno-unused-result
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TEST_OBJECTS = $(filter-out \
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parser_lex.o \
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parser_yacc.o \
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common_optarg.o \
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parser_main.o, ${OBJECTS}) \
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$(AAREOBJECTS)
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TEST_LDFLAGS = $(AARE_LDFLAGS)
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ifdef V
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VERBOSE = 1
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endif
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ifndef VERBOSE
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VERBOSE = 0
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endif
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ifeq ($(VERBOSE),1)
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BUILD_OUTPUT =
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Q =
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else
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BUILD_OUTPUT = > /dev/null 2>&1
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Q = @
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endif
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export Q VERBOSE BUILD_OUTPUT
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po/${NAME}.pot: ${SRCS} ${HDRS}
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$(MAKE) -C po ${NAME}.pot NAME=${NAME} SOURCES="${SRCS} ${HDRS}"
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techdoc.pdf: techdoc.tex
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timestamp=$(shell date "+%Y%m%d%H%M%S+02'00'" -r $< );\
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while pdflatex "\def\fixedpdfdate{$$timestamp}\input $<" ${BUILD_OUTPUT} || exit 1 ; \
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grep -q "Label(s) may have changed" techdoc.log; \
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do :; done
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techdoc/index.html: techdoc.pdf
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latex2html -show_section_numbers -split 0 -noinfo -nonavigation -noaddress techdoc.tex ${BUILD_OUTPUT}
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techdoc.txt: techdoc/index.html
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w3m -dump $< > $@
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# targets arranged this way so that people who don't want full docs can
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# pick specific targets they want.
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arch: $(TOOLS)
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manpages: $(MANPAGES)
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htmlmanpages: $(HTMLMANPAGES)
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pdf: techdoc.pdf
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docs: manpages htmlmanpages pdf
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indep: docs
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$(Q)$(MAKE) -C po all
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all: arch indep
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.PHONY: coverage
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coverage:
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$(MAKE) clean apparmor_parser COVERAGE=1
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ifndef USE_SYSTEM
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$(LIBAPPARMOR_A):
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@if [ ! -f $@ ]; then \
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echo "error: $@ is missing. Pick one of these possible solutions:" 1>&2; \
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echo " 1) Build against the in-tree libapparmor by building it first and then trying again. See the top-level README for help." 1>&2; \
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echo " 2) Build against the system libapparmor by adding USE_SYSTEM=1 to your make command." 1>&2;\
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return 1; \
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fi
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endif
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apparmor_parser: $(OBJECTS) $(AAREOBJECTS) $(LIBAPPARMOR_A)
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$(CXX) $(LDFLAGS) $(EXTRA_CFLAGS) -o $@ $(OBJECTS) $(LIBS) \
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${LEXLIB} $(AAREOBJECTS) $(AARE_LDFLAGS) $(AALIB)
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parser_yacc.c parser_yacc.h: parser_yacc.y parser.h profile.h
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$(YACC) $(YFLAGS) -o parser_yacc.c parser_yacc.y
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parser_lex.c: parser_lex.l parser_yacc.h parser.h profile.h mount.h dbus.h
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$(LEX) ${LEXFLAGS} -o$@ $<
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parser_lex.o: parser_lex.c parser.h parser_yacc.h
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$(CXX) $(EXTRA_CFLAGS) -c -o $@ $<
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parser_misc.o: parser_misc.c parser.h parser_yacc.h profile.h cap_names.h $(APPARMOR_H)
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$(CXX) $(EXTRA_CFLAGS) -c -o $@ $<
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parser_yacc.o: parser_yacc.c parser_yacc.h $(APPARMOR_H)
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$(CXX) $(EXTRA_CFLAGS) -c -o $@ $<
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parser_main.o: parser_main.c parser.h parser_version.h libapparmor_re/apparmor_re.h $(APPARMOR_H)
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$(CXX) $(EXTRA_CFLAGS) -c -o $@ $<
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parser_interface.o: parser_interface.c parser.h profile.h libapparmor_re/apparmor_re.h
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$(CXX) $(EXTRA_CFLAGS) -c -o $@ $<
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parser_include.o: parser_include.c parser.h parser_include.h
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$(CXX) $(EXTRA_CFLAGS) -c -o $@ $<
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parser_merge.o: parser_merge.c parser.h profile.h
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$(CXX) $(EXTRA_CFLAGS) -c -o $@ $<
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parser_regex.o: parser_regex.c parser.h profile.h libapparmor_re/apparmor_re.h $(APPARMOR_H)
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$(CXX) $(EXTRA_CFLAGS) -c -o $@ $<
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parser_symtab.o: parser_symtab.c parser.h
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$(CXX) $(EXTRA_CFLAGS) -c -o $@ $<
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parser_variable.o: parser_variable.c parser.h profile.h
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$(CXX) $(EXTRA_CFLAGS) -c -o $@ $<
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parser_policy.o: parser_policy.c parser.h parser_yacc.h profile.h
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$(CXX) $(EXTRA_CFLAGS) -c -o $@ $<
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parser_alias.o: parser_alias.c parser.h profile.h
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$(CXX) $(EXTRA_CFLAGS) -c -o $@ $<
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parser_common.o: parser_common.c parser.h
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$(CXX) $(EXTRA_CFLAGS) -c -o $@ $<
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mount.o: mount.cc mount.h parser.h immunix.h rule.h
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$(CXX) $(EXTRA_CFLAGS) -c -o $@ $<
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common_optarg.o: common_optarg.c common_optarg.h parser.h libapparmor_re/apparmor_re.h
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$(CXX) $(EXTRA_CFLAGS) -c -o $@ $<
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lib.o: lib.c lib.h parser.h
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$(CXX) $(EXTRA_CFLAGS) -c -o $@ $<
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dbus.o: dbus.cc dbus.h parser.h immunix.h parser_yacc.h rule.h $(APPARMOR_H)
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$(CXX) $(EXTRA_CFLAGS) -c -o $@ $<
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signal.o: signal.cc signal.h parser.h immunix.h parser_yacc.h rule.h $(APPARMOR_H)
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$(CXX) $(EXTRA_CFLAGS) -c -o $@ $<
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ptrace.o: ptrace.cc ptrace.h parser.h immunix.h parser_yacc.h rule.h $(APPARMOR_H)
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$(CXX) $(EXTRA_CFLAGS) -c -o $@ $<
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network.o: network.c network.h parser.h immunix.h parser_yacc.h rule.h af_names.h $(APPARMOR_H)
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$(CXX) $(EXTRA_CFLAGS) -c -o $@ $<
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af_rule.o: af_rule.cc af_rule.h network.h parser.h immunix.h parser_yacc.h rule
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$(CXX) $(EXTRA_CFLAGS) -c -o $@ $<
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af_unix.o: af_unix.cc af_unix.h network.h af_rule.h parser.h immunix.h parser_y
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$(CXX) $(EXTRA_CFLAGS) -c -o $@ $<
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profile.o: profile.cc profile.h parser.h network.h
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$(CXX) $(EXTRA_CFLAGS) -c -o $@ $<
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rule.o: rule.cc rule.h policydb.h
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$(CXX) $(EXTRA_CFLAGS) -c -o $@ $<
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parser_version.h: Makefile
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@echo \#define PARSER_VERSION \"$(VERSION)\" > .ver
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@mv -f .ver $@
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# af_names and capabilities generation has moved to common/Make.rules,
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# as well as the filtering that occurs for network protocols that
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# apparmor should not mediate.
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.PHONY: af_names.h
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af_names.h:
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echo "$(AF_NAMES)" | LC_ALL=C sed -n -e 's/[ \t]\?AF_MAX[ \t]\+[0-9]\+,//g' -e 's/[ \t]\+\?AF_\([A-Z0-9_]\+\)[ \t]\+\([0-9]\+\),/#ifndef AF_\1\n# define AF_\1 \2\n#endif\nAA_GEN_NET_ENT("\L\1", \UAF_\1)\n\n/pg' > $@
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echo "$(AF_NAMES)" | LC_ALL=C sed -n -e 's/.*,[ \t]\+AF_MAX[ \t]\+\([0-9]\+\),\?.*/#define AA_AF_MAX \1\n/p' >> $@
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# cat $@
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cap_names.h: /usr/include/linux/capability.h
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echo "$(CAPABILITIES)" | LC_ALL=C sed -n -e "s/[ \\t]\\?CAP_\\([A-Z0-9_]\\+\\)/\{\"\\L\\1\", \\UCAP_\\1\},\\n/pg" > $@
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tst_lib: lib.c parser.h $(filter-out lib.o, ${TEST_OBJECTS})
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$(CXX) $(TEST_CFLAGS) -o $@ $< $(filter-out $(<:.c=.o), ${TEST_OBJECTS}) $(TEST_LDFLAGS)
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tst_%: parser_%.c parser.h $(filter-out parser_%.o, ${TEST_OBJECTS})
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$(CXX) $(TEST_CFLAGS) -o $@ $< $(filter-out $(<:.c=.o), ${TEST_OBJECTS}) $(TEST_LDFLAGS)
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.SILENT: check
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.PHONY: check
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check: tests
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.SILENT: tests
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tests: apparmor_parser ${TESTS}
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sh -e -c 'for test in ${TESTS} ; do echo "*** running $${test}" && ./$${test}; done'
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$(Q)$(MAKE) -s -C tst tests
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# always need to rebuild.
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.SILENT: $(AAREOBJECT)
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.PHONY: $(AAREOBJECT)
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$(AAREOBJECT):
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$(MAKE) -C $(AAREDIR) CFLAGS="$(EXTRA_CXXFLAGS)"
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.PHONY: install-rhel4
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install-rhel4: install-redhat
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.PHONY: install-redhat
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install-redhat:
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install -m 755 -d $(DESTDIR)/etc/init.d
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install -m 755 rc.apparmor.$(subst install-,,$@) $(DESTDIR)/etc/init.d/apparmor
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.PHONY: install-suse
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install-suse:
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install -m 755 -d $(DESTDIR)/etc/init.d
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install -m 755 rc.apparmor.$(subst install-,,$(@)) $(DESTDIR)/etc/init.d/boot.apparmor
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install -m 755 -d $(DESTDIR)/sbin
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ln -sf /etc/init.d/boot.apparmor $(DESTDIR)/sbin/rcapparmor
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ln -sf rcapparmor $(DESTDIR)/sbin/rcsubdomain
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.PHONY: install-slackware
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install-slackware:
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install -m 755 -d $(APPARMOR_BIN_PREFIX)/install
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install -m 755 frob_slack_rc $(APPARMOR_BIN_PREFIX)/install
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install -m 755 -d $(DESTDIR)/etc/rc.d
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install -m 755 rc.apparmor.$(subst install-,,$(@)) $(DESTDIR)/etc/rc.d/rc.apparmor
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.PHONY: install-debian
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install-debian:
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.PHONY: install-unknown
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install-unknown:
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INSTALLDEPS=arch
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ifdef DISTRO
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INSTALLDEPS+=install-$(DISTRO)
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endif
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.PHONY: install
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install: install-indep install-arch
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.PHONY: install-arch
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install-arch: $(INSTALLDEPS)
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install -m 755 -d $(DESTDIR)/sbin
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install -m 755 ${TOOLS} $(DESTDIR)/sbin
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.PHONY: install-indep
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install-indep:
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install -m 755 -d $(INSTALL_CONFDIR)
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install -m 644 subdomain.conf $(INSTALL_CONFDIR)
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install -m 644 parser.conf $(INSTALL_CONFDIR)
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install -m 755 -d ${DESTDIR}/var/lib/apparmor
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install -m 755 -d $(APPARMOR_BIN_PREFIX)
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install -m 755 rc.apparmor.functions $(APPARMOR_BIN_PREFIX)
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$(MAKE) -C po install NAME=${NAME} DESTDIR=${DESTDIR}
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$(MAKE) install_manpages DESTDIR=${DESTDIR}
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.SILENT: clean
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.PHONY: clean
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clean: _clean
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rm -f core core.* *.o *.s *.a *~ *.gcda *.gcno
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rm -f gmon.out
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rm -f $(TOOLS) $(TESTS)
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rm -f $(LEX_C_FILES)
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rm -f $(YACC_C_FILES)
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rm -f parser_version.h
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rm -f $(NAME)*.tar.gz $(NAME)*.tgz
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rm -f af_names.h
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rm -f cap_names.h
|
|
rm -rf techdoc.aux techdoc.out techdoc.log techdoc.pdf techdoc.toc techdoc.txt techdoc/
|
|
$(MAKE) -s -C $(AAREDIR) clean
|
|
$(MAKE) -s -C po clean
|
|
$(MAKE) -s -C tst clean
|
|
|
|
.SILENT: dist_clean
|
|
dist_clean:
|
|
@$(MAKE) clean
|
|
@rm -f $(LEX_C_FILES) $(YACC_C_FILES)
|