From b49c7806a395fd655edd19785f56874b28f5a24c Mon Sep 17 00:00:00 2001 From: David Herrmann Date: Sun, 11 Jan 2015 15:27:18 +0100 Subject: bus-proxy: print message direction in policy logs Make sure to print "dbus-1 to kernel" or "kernel to dbus-1" in policy logs to better diagnose the situation. --- src/bus-proxyd/bus-proxyd.c | 16 ++++++++-------- src/bus-proxyd/bus-xml-policy.c | 16 ++++++++++------ src/bus-proxyd/bus-xml-policy.h | 6 ++++-- src/bus-proxyd/test-bus-xml-policy.c | 34 +++++++++++++++++----------------- 4 files changed, 39 insertions(+), 33 deletions(-) (limited to 'src/bus-proxyd') diff --git a/src/bus-proxyd/bus-proxyd.c b/src/bus-proxyd/bus-proxyd.c index 2b32865213..bd2b0a82cb 100644 --- a/src/bus-proxyd/bus-proxyd.c +++ b/src/bus-proxyd/bus-proxyd.c @@ -1044,14 +1044,14 @@ static int process_policy(sd_bus *from, sd_bus *to, sd_bus_message *m, Policy *p /* First check whether the sender can send the message to our name */ if (set_isempty(owned_names)) { - if (policy_check_send(policy, sender_uid, sender_gid, m->header->type, NULL, m->path, m->interface, m->member)) + if (policy_check_send(policy, sender_uid, sender_gid, m->header->type, NULL, m->path, m->interface, m->member, false)) granted = true; } else { Iterator i; char *n; SET_FOREACH(n, owned_names, i) - if (policy_check_send(policy, sender_uid, sender_gid, m->header->type, n, m->path, m->interface, m->member)) { + if (policy_check_send(policy, sender_uid, sender_gid, m->header->type, n, m->path, m->interface, m->member, false)) { granted = true; break; } @@ -1060,13 +1060,13 @@ static int process_policy(sd_bus *from, sd_bus *to, sd_bus_message *m, Policy *p if (granted) { /* Then check whether us (the recipient) can receive from the sender's name */ if (strv_isempty(sender_names)) { - if (policy_check_recv(policy, our_ucred->uid, our_ucred->gid, m->header->type, NULL, m->path, m->interface, m->member)) + if (policy_check_recv(policy, our_ucred->uid, our_ucred->gid, m->header->type, NULL, m->path, m->interface, m->member, false)) return 0; } else { char **n; STRV_FOREACH(n, sender_names) { - if (policy_check_recv(policy, our_ucred->uid, our_ucred->gid, m->header->type, *n, m->path, m->interface, m->member)) + if (policy_check_recv(policy, our_ucred->uid, our_ucred->gid, m->header->type, *n, m->path, m->interface, m->member, false)) return 0; } } @@ -1113,13 +1113,13 @@ static int process_policy(sd_bus *from, sd_bus *to, sd_bus_message *m, Policy *p /* First check if we (the sender) can send to this name */ if (strv_isempty(destination_names)) { - if (policy_check_send(policy, our_ucred->uid, our_ucred->gid, m->header->type, NULL, m->path, m->interface, m->member)) + if (policy_check_send(policy, our_ucred->uid, our_ucred->gid, m->header->type, NULL, m->path, m->interface, m->member, true)) granted = true; } else { char **n; STRV_FOREACH(n, destination_names) { - if (policy_check_send(policy, our_ucred->uid, our_ucred->gid, m->header->type, *n, m->path, m->interface, m->member)) { + if (policy_check_send(policy, our_ucred->uid, our_ucred->gid, m->header->type, *n, m->path, m->interface, m->member, true)) { /* If we made a receiver decision, then remember which name's policy @@ -1159,14 +1159,14 @@ static int process_policy(sd_bus *from, sd_bus *to, sd_bus_message *m, Policy *p * skip policy checks in this case. */ return 0; } else if (set_isempty(owned_names)) { - if (policy_check_recv(policy, destination_uid, destination_gid, m->header->type, NULL, m->path, m->interface, m->member)) + if (policy_check_recv(policy, destination_uid, destination_gid, m->header->type, NULL, m->path, m->interface, m->member, true)) return 0; } else { Iterator i; char *n; SET_FOREACH(n, owned_names, i) - if (policy_check_recv(policy, destination_uid, destination_gid, m->header->type, n, m->path, m->interface, m->member)) + if (policy_check_recv(policy, destination_uid, destination_gid, m->header->type, n, m->path, m->interface, m->member, true)) return 0; } } diff --git a/src/bus-proxyd/bus-xml-policy.c b/src/bus-proxyd/bus-xml-policy.c index 366adbd7ac..a5c4313327 100644 --- a/src/bus-proxyd/bus-xml-policy.c +++ b/src/bus-proxyd/bus-xml-policy.c @@ -837,7 +837,8 @@ bool policy_check_recv(Policy *p, const char *name, const char *path, const char *interface, - const char *member) { + const char *member, + bool dbus_to_kernel) { struct policy_check_filter filter = { .class = POLICY_ITEM_RECV, @@ -857,8 +858,9 @@ bool policy_check_recv(Policy *p, verdict = policy_check(p, &filter); log_full(LOG_AUTH | (verdict != ALLOW ? LOG_WARNING : LOG_DEBUG), - "Receive permission check for uid=" UID_FMT " gid=" GID_FMT" message=%s name=%s path=%s interface=%s member=%s: %s", - uid, gid, bus_message_type_to_string(message_type), strna(name), strna(path), strna(interface), strna(member), strna(verdict_to_string(verdict))); + "Receive permission check %s for uid=" UID_FMT " gid=" GID_FMT" message=%s name=%s path=%s interface=%s member=%s: %s", + dbus_to_kernel ? "dbus-1 to kernel" : "kernel to dbus-1", uid, gid, bus_message_type_to_string(message_type), strna(name), + strna(path), strna(interface), strna(member), strna(verdict_to_string(verdict))); return verdict == ALLOW; } @@ -870,7 +872,8 @@ bool policy_check_send(Policy *p, const char *name, const char *path, const char *interface, - const char *member) { + const char *member, + bool dbus_to_kernel) { struct policy_check_filter filter = { .class = POLICY_ITEM_SEND, @@ -890,8 +893,9 @@ bool policy_check_send(Policy *p, verdict = policy_check(p, &filter); log_full(LOG_AUTH | (verdict != ALLOW ? LOG_WARNING : LOG_DEBUG), - "Send permission check for uid=" UID_FMT " gid=" GID_FMT" message=%s name=%s path=%s interface=%s member=%s: %s", - uid, gid, bus_message_type_to_string(message_type), strna(name), strna(path), strna(interface), strna(member), strna(verdict_to_string(verdict))); + "Send permission check %s for uid=" UID_FMT " gid=" GID_FMT" message=%s name=%s path=%s interface=%s member=%s: %s", + dbus_to_kernel ? "dbus-1 to kernel" : "kernel to dbus-1", uid, gid, bus_message_type_to_string(message_type), strna(name), + strna(path), strna(interface), strna(member), strna(verdict_to_string(verdict))); return verdict == ALLOW; } diff --git a/src/bus-proxyd/bus-xml-policy.h b/src/bus-proxyd/bus-xml-policy.h index 933a53ceb5..639520fea6 100644 --- a/src/bus-proxyd/bus-xml-policy.h +++ b/src/bus-proxyd/bus-xml-policy.h @@ -85,7 +85,8 @@ bool policy_check_recv(Policy *p, const char *name, const char *path, const char *interface, - const char *member); + const char *member, + bool dbus_to_kernel); bool policy_check_send(Policy *p, uid_t uid, gid_t gid, @@ -93,7 +94,8 @@ bool policy_check_send(Policy *p, const char *name, const char *path, const char *interface, - const char *member); + const char *member, + bool dbus_to_kernel); void policy_dump(Policy *p); diff --git a/src/bus-proxyd/test-bus-xml-policy.c b/src/bus-proxyd/test-bus-xml-policy.c index c22409c0f6..cd1b4b2e60 100644 --- a/src/bus-proxyd/test-bus-xml-policy.c +++ b/src/bus-proxyd/test-bus-xml-policy.c @@ -105,8 +105,8 @@ int main(int argc, char *argv[]) { /* Signaltest */ assert_se(test_policy_load(&p, "signals.conf") == 0); - assert_se(policy_check_send(&p, 0, 0, SD_BUS_MESSAGE_SIGNAL, "bli.bla.blubb", NULL, "/an/object/path", NULL) == true); - assert_se(policy_check_send(&p, 1, 0, SD_BUS_MESSAGE_SIGNAL, "bli.bla.blubb", NULL, "/an/object/path", NULL) == false); + assert_se(policy_check_send(&p, 0, 0, SD_BUS_MESSAGE_SIGNAL, "bli.bla.blubb", NULL, "/an/object/path", NULL, false) == true); + assert_se(policy_check_send(&p, 1, 0, SD_BUS_MESSAGE_SIGNAL, "bli.bla.blubb", NULL, "/an/object/path", NULL, false) == false); policy_free(&p); @@ -114,12 +114,12 @@ int main(int argc, char *argv[]) { assert_se(test_policy_load(&p, "methods.conf") == 0); policy_dump(&p); - assert_se(policy_check_send(&p, 0, 0, SD_BUS_MESSAGE_METHOD_CALL, "org.test.test1", "/an/object/path", "bli.bla.blubb", "Member") == false); - assert_se(policy_check_send(&p, 0, 0, SD_BUS_MESSAGE_METHOD_CALL, "org.test.test1", "/an/object/path", "bli.bla.blubb", "Member") == false); - assert_se(policy_check_send(&p, 0, 0, SD_BUS_MESSAGE_METHOD_CALL, "org.test.test1", "/an/object/path", "org.test.int1", "Member") == true); - assert_se(policy_check_send(&p, 0, 0, SD_BUS_MESSAGE_METHOD_CALL, "org.test.test1", "/an/object/path", "org.test.int2", "Member") == true); + assert_se(policy_check_send(&p, 0, 0, SD_BUS_MESSAGE_METHOD_CALL, "org.test.test1", "/an/object/path", "bli.bla.blubb", "Member", false) == false); + assert_se(policy_check_send(&p, 0, 0, SD_BUS_MESSAGE_METHOD_CALL, "org.test.test1", "/an/object/path", "bli.bla.blubb", "Member", false) == false); + assert_se(policy_check_send(&p, 0, 0, SD_BUS_MESSAGE_METHOD_CALL, "org.test.test1", "/an/object/path", "org.test.int1", "Member", false) == true); + assert_se(policy_check_send(&p, 0, 0, SD_BUS_MESSAGE_METHOD_CALL, "org.test.test1", "/an/object/path", "org.test.int2", "Member", false) == true); - assert_se(policy_check_recv(&p, 0, 0, SD_BUS_MESSAGE_METHOD_CALL, "org.test.test3", "/an/object/path", "org.test.int3", "Member111") == true); + assert_se(policy_check_recv(&p, 0, 0, SD_BUS_MESSAGE_METHOD_CALL, "org.test.test3", "/an/object/path", "org.test.int3", "Member111", false) == true); policy_free(&p); @@ -162,19 +162,19 @@ int main(int argc, char *argv[]) { assert_se(policy_check_own(&p, 0, 0, "org.foo.FooService") == true); assert_se(policy_check_own(&p, 0, 0, "org.foo.FooService2") == false); - assert_se(policy_check_send(&p, 0, 0, SD_BUS_MESSAGE_METHOD_CALL, "org.test.test1", "/an/object/path", "org.test.int2", "Member") == false); - assert_se(policy_check_send(&p, 0, 0, SD_BUS_MESSAGE_METHOD_CALL, "org.test.test1", "/an/object/path", "org.foo.FooBroadcastInterface", "Member") == true); - assert_se(policy_check_recv(&p, 0, 0, SD_BUS_MESSAGE_METHOD_CALL, "org.foo.FooService", "/an/object/path", "org.foo.FooBroadcastInterface", "Member") == true); - assert_se(policy_check_recv(&p, 0, 0, SD_BUS_MESSAGE_METHOD_CALL, "org.foo.FooService", "/an/object/path", "org.foo.FooBroadcastInterface2", "Member") == false); - assert_se(policy_check_recv(&p, 0, 0, SD_BUS_MESSAGE_METHOD_CALL, "org.foo.FooService2", "/an/object/path", "org.foo.FooBroadcastInterface", "Member") == false); + assert_se(policy_check_send(&p, 0, 0, SD_BUS_MESSAGE_METHOD_CALL, "org.test.test1", "/an/object/path", "org.test.int2", "Member", false) == false); + assert_se(policy_check_send(&p, 0, 0, SD_BUS_MESSAGE_METHOD_CALL, "org.test.test1", "/an/object/path", "org.foo.FooBroadcastInterface", "Member", false) == true); + assert_se(policy_check_recv(&p, 0, 0, SD_BUS_MESSAGE_METHOD_CALL, "org.foo.FooService", "/an/object/path", "org.foo.FooBroadcastInterface", "Member", false) == true); + assert_se(policy_check_recv(&p, 0, 0, SD_BUS_MESSAGE_METHOD_CALL, "org.foo.FooService", "/an/object/path", "org.foo.FooBroadcastInterface2", "Member", false) == false); + assert_se(policy_check_recv(&p, 0, 0, SD_BUS_MESSAGE_METHOD_CALL, "org.foo.FooService2", "/an/object/path", "org.foo.FooBroadcastInterface", "Member", false) == false); assert_se(policy_check_own(&p, 100, 0, "org.foo.FooService") == false); assert_se(policy_check_own(&p, 100, 0, "org.foo.FooService2") == false); - assert_se(policy_check_send(&p, 100, 0, SD_BUS_MESSAGE_METHOD_CALL, "org.test.test1", "/an/object/path", "org.test.int2", "Member") == false); - assert_se(policy_check_send(&p, 100, 0, SD_BUS_MESSAGE_METHOD_CALL, "org.test.test1", "/an/object/path", "org.foo.FooBroadcastInterface", "Member") == false); - assert_se(policy_check_recv(&p, 100, 0, SD_BUS_MESSAGE_METHOD_CALL, "org.foo.FooService", "/an/object/path", "org.foo.FooBroadcastInterface", "Member") == true); - assert_se(policy_check_recv(&p, 100, 0, SD_BUS_MESSAGE_METHOD_CALL, "org.foo.FooService", "/an/object/path", "org.foo.FooBroadcastInterface2", "Member") == false); - assert_se(policy_check_recv(&p, 100, 0, SD_BUS_MESSAGE_METHOD_CALL, "org.foo.FooService2", "/an/object/path", "org.foo.FooBroadcastInterface", "Member") == false); + assert_se(policy_check_send(&p, 100, 0, SD_BUS_MESSAGE_METHOD_CALL, "org.test.test1", "/an/object/path", "org.test.int2", "Member", false) == false); + assert_se(policy_check_send(&p, 100, 0, SD_BUS_MESSAGE_METHOD_CALL, "org.test.test1", "/an/object/path", "org.foo.FooBroadcastInterface", "Member", false) == false); + assert_se(policy_check_recv(&p, 100, 0, SD_BUS_MESSAGE_METHOD_CALL, "org.foo.FooService", "/an/object/path", "org.foo.FooBroadcastInterface", "Member", false) == true); + assert_se(policy_check_recv(&p, 100, 0, SD_BUS_MESSAGE_METHOD_CALL, "org.foo.FooService", "/an/object/path", "org.foo.FooBroadcastInterface2", "Member", false) == false); + assert_se(policy_check_recv(&p, 100, 0, SD_BUS_MESSAGE_METHOD_CALL, "org.foo.FooService2", "/an/object/path", "org.foo.FooBroadcastInterface", "Member", false) == false); policy_free(&p); -- cgit v1.2.3-54-g00ecf