Function ACLCheckPubsubPerm

app/redis-6.2.6/src/acl.c:1342–1364

Check if the pub/sub channels of the command, that's ready to be executed in * the client 'c', can be executed by this client according to the ACLs channels * associated to the client user c->user. * * idx and count are the index and count of channel arguments from the * command. The literal argument controls whether the user's ACL channels are * evaluated as literal values or matched as g

 * If the user can execute the command ACL_OK is returned, otherwise 
 * ACL_DENIED_CHANNEL. */
int ACLCheckPubsubPerm(client *c, int idx, int count, int literal, int *idxptr) {
    user *u = c->user;

    /* If there is no associated user, the connection can run anything. */
    if (u == NULL) return ACL_OK;

    /* Check if the user can access the channels mentioned in the command's
     * arguments. */
    if (!(c->user->flags & USER_FLAG_ALLCHANNELS)) {
        for (int j = idx; j < idx+count; j++) {
            if (ACLCheckPubsubChannelPerm(c->argv[j]->ptr,u->channels,literal)
                != ACL_OK) {
                if (idxptr) *idxptr = j;
                return ACL_DENIED_CHANNEL;
            }
        }
    }

    /* If we survived all the above checks, the user can execute the
     * command. */
    return ACL_OK;

}

/* Check whether the command is ready to be exceuted by ACLCheckCommandPerm.
 * If check passes, then check whether pub/sub channels of the command is