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-rw-r--r--src/acl.c17
-rw-r--r--tests/unit/acl.tcl14
2 files changed, 29 insertions, 2 deletions
diff --git a/src/acl.c b/src/acl.c
index b4fb52c50..30fdc8e07 100644
--- a/src/acl.c
+++ b/src/acl.c
@@ -478,17 +478,30 @@ sds ACLDescribeUserCommandRules(user *u) {
/* Try to add or subtract each category one after the other. Often a
* single category will not perfectly match the set of commands into
* it, so at the end we do a final pass adding/removing the single commands
- * needed to make the bitmap exactly match. */
+ * needed to make the bitmap exactly match. A temp user is maintained to
+ * keep track of categories already applied. */
+ user tu = {0};
+ user *tempuser = &tu;
+ memcpy(tempuser->allowed_commands,
+ u->allowed_commands,
+ sizeof(u->allowed_commands));
+
for (int j = 0; ACLCommandCategories[j].flag != 0; j++) {
unsigned long on, off;
- ACLCountCategoryBitsForUser(u,&on,&off,ACLCommandCategories[j].name);
+ ACLCountCategoryBitsForUser(tempuser,&on,&off,ACLCommandCategories[j].name);
if ((additive && on > off) || (!additive && off > on)) {
sds op = sdsnewlen(additive ? "+@" : "-@", 2);
op = sdscat(op,ACLCommandCategories[j].name);
ACLSetUser(fakeuser,op,-1);
+
+ sds invop = sdsnewlen(additive ? "-@" : "+@", 2);
+ invop = sdscat(invop,ACLCommandCategories[j].name);
+ ACLSetUser(tempuser,invop,-1);
+
rules = sdscatsds(rules,op);
rules = sdscatlen(rules," ",1);
sdsfree(op);
+ sdsfree(invop);
}
}
diff --git a/tests/unit/acl.tcl b/tests/unit/acl.tcl
index f015f75a0..12f59e749 100644
--- a/tests/unit/acl.tcl
+++ b/tests/unit/acl.tcl
@@ -135,6 +135,20 @@ start_server {tags {"acl"}} {
assert_match {*+acl*} $cmdstr
}
+ # A regression test make sure that as long as there is a simple
+ # category defining the commands, that it will be used as is.
+ test {ACL GETUSER provides reasonable results} {
+ # Test for future commands where allowed
+ r ACL setuser additive reset +@all -@write
+ set cmdstr [dict get [r ACL getuser additive] commands]
+ assert_match {+@all -@write} $cmdstr
+
+ # Test for future commands are disallowed
+ r ACL setuser subtractive reset -@all +@read
+ set cmdstr [dict get [r ACL getuser subtractive] commands]
+ assert_match {-@all +@read} $cmdstr
+ }
+
test {ACL #5998 regression: memory leaks adding / removing subcommands} {
r AUTH default ""
r ACL setuser newuser reset -debug +debug|a +debug|b +debug|c