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systemd/0554-bus-policy-move-name-l...

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From d46fbfb48deff83943355992e55f9ef4431ff5ef Mon Sep 17 00:00:00 2001
From: Daniel Mack <daniel@zonque.org>
Date: Thu, 9 Oct 2014 13:26:53 +0200
Subject: [PATCH] bus-policy: move name list iteration to policy users
We need to figure out which of the possible names satisfied the policy,
so we cannot do the iteration in check_policy_item() but have to leave it
to the users.
Test cases amended accordingly.
---
src/bus-proxyd/bus-policy.c | 29 ++++++++++-------------------
src/bus-proxyd/bus-policy.h | 4 ++--
src/bus-proxyd/test-bus-policy.c | 21 +++++++--------------
3 files changed, 19 insertions(+), 35 deletions(-)
diff --git a/src/bus-proxyd/bus-policy.c b/src/bus-proxyd/bus-policy.c
index aea8541d50..625f5ddaee 100644
--- a/src/bus-proxyd/bus-policy.c
+++ b/src/bus-proxyd/bus-policy.c
@@ -602,14 +602,10 @@ struct policy_check_filter {
int class;
const struct ucred *ucred;
int message_type;
+ const char *name;
const char *interface;
const char *path;
- union {
- const char *name;
- const char *member;
- };
- char **names_strv;
- Hashmap *names_hash;
+ const char *member;
};
static int is_permissive(PolicyItem *i) {
@@ -628,13 +624,8 @@ static int check_policy_item(PolicyItem *i, const struct policy_check_filter *fi
case POLICY_ITEM_SEND:
case POLICY_ITEM_RECV:
- if (i->name) {
- if (filter->names_hash && !hashmap_contains(filter->names_hash, i->name))
- break;
-
- if (filter->names_strv && !strv_contains(filter->names_strv, i->name))
- break;
- }
+ if (i->name && !streq_ptr(i->name, filter->name))
+ break;
if ((i->message_type != _POLICY_ITEM_CLASS_UNSET) && (i->message_type != filter->message_type))
break;
@@ -651,14 +642,14 @@ static int check_policy_item(PolicyItem *i, const struct policy_check_filter *fi
return is_permissive(i);
case POLICY_ITEM_OWN:
- assert(filter->member);
+ assert(filter->name);
if (streq(i->name, "*") || streq(i->name, filter->name))
return is_permissive(i);
break;
case POLICY_ITEM_OWN_PREFIX:
- assert(filter->member);
+ assert(filter->name);
if (streq(i->name, "*") || startswith(i->name, filter->name))
return is_permissive(i);
@@ -780,8 +771,8 @@ bool policy_check_hello(Policy *p, const struct ucred *ucred) {
bool policy_check_recv(Policy *p,
const struct ucred *ucred,
- Hashmap *names,
int message_type,
+ const char *name,
const char *path,
const char *interface,
const char *member) {
@@ -789,8 +780,8 @@ bool policy_check_recv(Policy *p,
struct policy_check_filter filter = {
.class = POLICY_ITEM_RECV,
.ucred = ucred,
- .names_hash = names,
.message_type = message_type,
+ .name = name,
.interface = interface,
.path = path,
.member = member,
@@ -801,8 +792,8 @@ bool policy_check_recv(Policy *p,
bool policy_check_send(Policy *p,
const struct ucred *ucred,
- char **names,
int message_type,
+ const char *name,
const char *path,
const char *interface,
const char *member) {
@@ -810,8 +801,8 @@ bool policy_check_send(Policy *p,
struct policy_check_filter filter = {
.class = POLICY_ITEM_SEND,
.ucred = ucred,
- .names_strv = names,
.message_type = message_type,
+ .name = name,
.interface = interface,
.path = path,
.member = member,
diff --git a/src/bus-proxyd/bus-policy.h b/src/bus-proxyd/bus-policy.h
index 5b4d9d0c10..64fe1ffac5 100644
--- a/src/bus-proxyd/bus-policy.h
+++ b/src/bus-proxyd/bus-policy.h
@@ -80,15 +80,15 @@ bool policy_check_own(Policy *p, const struct ucred *ucred, const char *name);
bool policy_check_hello(Policy *p, const struct ucred *ucred);
bool policy_check_recv(Policy *p,
const struct ucred *ucred,
- Hashmap *names,
int message_type,
+ const char *name,
const char *path,
const char *interface,
const char *member);
bool policy_check_send(Policy *p,
const struct ucred *ucred,
- char **names,
int message_type,
+ const char *name,
const char *path,
const char *interface,
const char *member);
diff --git a/src/bus-proxyd/test-bus-policy.c b/src/bus-proxyd/test-bus-policy.c
index 5267788b70..c9a027e877 100644
--- a/src/bus-proxyd/test-bus-policy.c
+++ b/src/bus-proxyd/test-bus-policy.c
@@ -63,8 +63,6 @@ int main(int argc, char *argv[]) {
Policy p = {};
struct ucred ucred = {};
- char **names_strv;
- Hashmap *names_hash;
/* Ownership tests */
assert_se(test_policy_load(&p, "ownerships.conf") == 0);
@@ -93,32 +91,27 @@ int main(int argc, char *argv[]) {
/* Signaltest */
assert_se(test_policy_load(&p, "signals.conf") == 0);
- names_strv = STRV_MAKE("bli.bla.blubb");
ucred.uid = 0;
- assert_se(policy_check_send(&p, &ucred, names_strv, SD_BUS_MESSAGE_SIGNAL, NULL, "/an/object/path", NULL) == true);
+ assert_se(policy_check_send(&p, &ucred, SD_BUS_MESSAGE_SIGNAL, "bli.bla.blubb", NULL, "/an/object/path", NULL) == true);
ucred.uid = 1;
- assert_se(policy_check_send(&p, &ucred, names_strv, SD_BUS_MESSAGE_SIGNAL, NULL, "/an/object/path", NULL) == false);
+ assert_se(policy_check_send(&p, &ucred, SD_BUS_MESSAGE_SIGNAL, "bli.bla.blubb", NULL, "/an/object/path", NULL) == false);
policy_free(&p);
/* Method calls */
assert_se(test_policy_load(&p, "methods.conf") == 0);
- names_strv = STRV_MAKE("org.test.test1");
policy_dump(&p);
ucred.uid = 0;
- assert_se(policy_check_send(&p, &ucred, names_strv, SD_BUS_MESSAGE_METHOD_CALL, "/an/object/path", "bli.bla.blubb", "Member") == false);
- assert_se(policy_check_send(&p, &ucred, names_strv, SD_BUS_MESSAGE_METHOD_CALL, "/an/object/path", "bli.bla.blubb", "Member") == false);
- assert_se(policy_check_send(&p, &ucred, names_strv, SD_BUS_MESSAGE_METHOD_CALL, "/an/object/path", "org.test.int1", "Member") == true);
- assert_se(policy_check_send(&p, &ucred, names_strv, SD_BUS_MESSAGE_METHOD_CALL, "/an/object/path", "org.test.int2", "Member") == true);
+ assert_se(policy_check_send(&p, &ucred, SD_BUS_MESSAGE_METHOD_CALL, "org.test.test1", "/an/object/path", "bli.bla.blubb", "Member") == false);
+ assert_se(policy_check_send(&p, &ucred, SD_BUS_MESSAGE_METHOD_CALL, "org.test.test1", "/an/object/path", "bli.bla.blubb", "Member") == false);
+ assert_se(policy_check_send(&p, &ucred, SD_BUS_MESSAGE_METHOD_CALL, "org.test.test1", "/an/object/path", "org.test.int1", "Member") == true);
+ assert_se(policy_check_send(&p, &ucred, SD_BUS_MESSAGE_METHOD_CALL, "org.test.test1", "/an/object/path", "org.test.int2", "Member") == true);
- names_hash = hashmap_new(&string_hash_ops);
- assert(names_hash != NULL);
- assert_se(hashmap_put(names_hash, "org.test.test3", NULL) >= 0);
- assert_se(policy_check_recv(&p, &ucred, names_hash, SD_BUS_MESSAGE_METHOD_CALL, "/an/object/path", "org.test.int3", "Member111") == true);
+ assert_se(policy_check_recv(&p, &ucred, SD_BUS_MESSAGE_METHOD_CALL, "org.test.test3", "/an/object/path", "org.test.int3", "Member111") == true);
policy_free(&p);
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