diff --git a/contrib/apparmor/main.go b/contrib/apparmor/main.go new file mode 100644 index 0000000000..f70d5bb4ff --- /dev/null +++ b/contrib/apparmor/main.go @@ -0,0 +1,85 @@ +package main + +import ( + "fmt" + "log" + "os" + "os/exec" + "path" + "strconv" + "strings" + "text/template" +) + +type profileData struct { + MajorVersion int + MinorVersion int +} + +func main() { + if len(os.Args) < 2 { + log.Fatal("pass a filename to save the profile in.") + } + + // parse the arg + apparmorProfilePath := os.Args[1] + + // get the apparmor_version version + cmd := exec.Command("/sbin/apparmor_parser", "--version") + + output, err := cmd.CombinedOutput() + if err != nil { + log.Fatalf("getting apparmor_parser version failed: %s (%s)", err, output) + } + + // parse the version from the output + // output is in the form of the following: + // AppArmor parser version 2.9.1 + // Copyright (C) 1999-2008 Novell Inc. + // Copyright 2009-2012 Canonical Ltd. + lines := strings.SplitN(string(output), "\n", 2) + words := strings.Split(lines[0], " ") + version := words[len(words)-1] + // split by major minor version + v := strings.Split(version, ".") + if len(v) < 2 { + log.Fatalf("parsing major minor version failed for %q", version) + } + + majorVersion, err := strconv.Atoi(v[0]) + if err != nil { + log.Fatal(err) + } + minorVersion, err := strconv.Atoi(v[1]) + if err != nil { + log.Fatal(err) + } + data := profileData{ + MajorVersion: majorVersion, + MinorVersion: minorVersion, + } + fmt.Printf("apparmor_parser is of version %+v\n", data) + + // parse the template + compiled, err := template.New("apparmor_profile").Parse(dockerProfileTemplate) + if err != nil { + log.Fatalf("parsing template failed: %v", err) + } + + // make sure /etc/apparmor.d exists + if err := os.MkdirAll(path.Dir(apparmorProfilePath), 0755); err != nil { + log.Fatal(err) + } + + f, err := os.OpenFile(apparmorProfilePath, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0644) + if err != nil { + log.Fatal(err) + } + defer f.Close() + + if err := compiled.Execute(f, data); err != nil { + log.Fatalf("executing template failed: %v", err) + } + + fmt.Printf("created apparmor profile for version %+v at %q\n", data, apparmorProfilePath) +} diff --git a/contrib/apparmor/docker-engine b/contrib/apparmor/template.go similarity index 89% rename from contrib/apparmor/docker-engine rename to contrib/apparmor/template.go index 23ac5d6f05..9b9cfe4e80 100644 --- a/contrib/apparmor/docker-engine +++ b/contrib/apparmor/template.go @@ -1,4 +1,6 @@ -@{DOCKER_GRAPH_PATH}=/var/lib/docker +package main + +const dockerProfileTemplate = `@{DOCKER_GRAPH_PATH}=/var/lib/docker profile /usr/bin/docker (attach_disconnected, complain) { # Prevent following links to these files during container setup. @@ -15,9 +17,11 @@ profile /usr/bin/docker (attach_disconnected, complain) { umount, pivot_root, +{{if ge .MajorVersion 2}}{{if ge .MinorVersion 9}} signal (receive) peer=@{profile_name}, signal (receive) peer=unconfined, signal (send), +{{end}}{{end}} ipc rw, network, capability, @@ -34,10 +38,12 @@ profile /usr/bin/docker (attach_disconnected, complain) { /etc/localtime r, /etc/ld.so.cache r, +{{if ge .MajorVersion 2}}{{if ge .MinorVersion 9}} ptrace peer=@{profile_name}, ptrace (read) peer=docker-default, deny ptrace (trace) peer=docker-default, deny ptrace peer=/usr/bin/docker///bin/ps, +{{end}}{{end}} /usr/lib/** rm, /lib/** rm, @@ -57,9 +63,11 @@ profile /usr/bin/docker (attach_disconnected, complain) { /sbin/zfs rCx, /sbin/apparmor_parser rCx, +{{if ge .MajorVersion 2}}{{if ge .MinorVersion 9}} # Transitions change_profile -> docker-*, change_profile -> unconfined, +{{end}}{{end}} profile /bin/cat (complain) { /etc/ld.so.cache r, @@ -81,8 +89,10 @@ profile /usr/bin/docker (attach_disconnected, complain) { /dev/null rw, /bin/ps mr, +{{if ge .MajorVersion 2}}{{if ge .MinorVersion 9}} # We don't need ptrace so we'll deny and ignore the error. deny ptrace (read, trace), +{{end}}{{end}} # Quiet dac_override denials deny capability dac_override, @@ -100,11 +110,15 @@ profile /usr/bin/docker (attach_disconnected, complain) { /proc/tty/drivers r, } profile /sbin/iptables (complain) { +{{if ge .MajorVersion 2}}{{if ge .MinorVersion 9}} signal (receive) peer=/usr/bin/docker, +{{end}}{{end}} capability net_admin, } profile /sbin/auplink flags=(attach_disconnected, complain) { +{{if ge .MajorVersion 2}}{{if ge .MinorVersion 9}} signal (receive) peer=/usr/bin/docker, +{{end}}{{end}} capability sys_admin, capability dac_override, @@ -123,7 +137,9 @@ profile /usr/bin/docker (attach_disconnected, complain) { /proc/[0-9]*/mounts rw, } profile /sbin/modprobe /bin/kmod (complain) { +{{if ge .MajorVersion 2}}{{if ge .MinorVersion 9}} signal (receive) peer=/usr/bin/docker, +{{end}}{{end}} capability sys_module, /etc/ld.so.cache r, /lib/** rm, @@ -137,7 +153,9 @@ profile /usr/bin/docker (attach_disconnected, complain) { } # xz works via pipes, so we do not need access to the filesystem. profile /usr/bin/xz (complain) { +{{if ge .MajorVersion 2}}{{if ge .MinorVersion 9}} signal (receive) peer=/usr/bin/docker, +{{end}}{{end}} /etc/ld.so.cache r, /lib/** rm, /usr/bin/xz rm, @@ -238,4 +256,4 @@ profile /usr/bin/docker (attach_disconnected, complain) { capability mac_admin, } -} +}`