Problem to login with mega

ncw · January 11, 2020, 12:01pm

That is great investigation - thanks @Ajaja

I checked with the mega sdk which I think does a similar thing (It is in rather cryptic C++)

meganz/sdk/blob/66d9c1b5c5b43699fbd5881ba9de8a2eb43c97eb/src/node.cpp#L906


    return false;
}


int l = -1;
size_t t = 0;
handle h;
const char* k = NULL;
SymmCipher* sc = &client->key;
handle me = client->loggedin() ? client->me : *client->rootnodes;


while ((t = nodekeydata.find_first_of(':', t)) != string::npos)
{
    // compound key: locate suitable subkey (always symmetric)
    h = 0;


    l = Base64::atob(nodekeydata.c_str() + (nodekeydata.find_last_of('/', t) + 1), (byte*)&h, sizeof h);
    t++;


    if (l == MegaClient::USERHANDLE)
    {
        // this is a user handle - reject if it's not me

I don't really understand what the parameter after the / is for so I've ignored it.

I made an attempt to fix this here

https://beta.rclone.org/branch/v1.50.2-124-gaefe18fc-fix-mega-decode-beta/ (uploaded in 15-30 mins)

I patched the vendor directory in rclone so if it tests out OK then I'l push it up into the go-mega repo and pull it back into rclone.

@zbrasseaux can you try that too?