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Fixed excessive categories being displayed from acls (#7889)

This commit is contained in:
Madelyn Olson 2020-10-07 22:09:09 -07:00 committed by GitHub
parent f659d23619
commit 2127f7c8eb
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 29 additions and 2 deletions
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17
src/acl.c
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@ -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);
}
}

14
tests/unit/acl.tcl
View File

@ -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