Function win_token_user_query

src/daemon/ipc.c:3570–3587

}

static void *win_token_user_query(win_security_t *security, HANDLE token, PSID *sid_out) {
    DWORD needed = 0;
    (void)security->get_token_information(token, TokenUser, NULL, 0, &needed);
    if (needed == 0 || GetLastError() != ERROR_INSUFFICIENT_BUFFER) {
        return NULL;
    }
    /* The dynamically-resolved GetTokenInformation call initializes this
     * buffer on success.  Zero-initialize it as defense in depth and so
     * static analysis does not have to infer writes through a function
     * pointer before TOKEN_USER is inspected. */
    void *buffer = calloc(1, needed);
    if (!buffer || !security->get_token_information(token, TokenUser, buffer, needed, &needed)) {
        free(buffer);
        return NULL;
    }
    *sid_out = ((TOKEN_USER *)buffer)->User.Sid;
    return buffer;
}

#define RESOLVE_ADVAPI_MEMBER(context, member, type, symbol)                                   \
    do {                                                                                       \