Function API_ROUTINE isc_set_login

src/yvalve/utl.cpp:2156–2219

void API_ROUTINE isc_set_login(const UCHAR** dpb, SSHORT* dpb_size)
{
/**************************************
 *
 *	i s c _ s e t _ l o g i n
 *
 **************************************
 *
 * Functional description
 *	Pickup any ISC_USER and ISC_PASSWORD
 *	environment variables, and stuff them
 *	into the dpb (if there is no user name
 *	or password already referenced).
 *
 **************************************/

	// look for the environment variables

	string username, password;
	if (!fb_utils::readenv(ISC_USER, username) && !fb_utils::readenv(ISC_PASSWORD, password))
		return;

	// figure out whether the username or password have already been specified

	bool user_seen = false, password_seen = false;

	if (*dpb && *dpb_size)
	{
	    const UCHAR* p = *dpb;
		for (const UCHAR* const end_dpb = p + *dpb_size; p < end_dpb;)
		{
			const int item = *p++;
			switch (item)
			{
			case isc_dpb_version1:
				continue;

			case isc_dpb_user_name:
				user_seen = true;
				break;

			case isc_dpb_password:
			case isc_dpb_password_enc:
				password_seen = true;
				break;
			}

			// get the length and increment past the parameter.
			const USHORT l = *p++;
			p += l;
		}
	}

	if (username.length() && !user_seen)
	{
		if (password.length() && !password_seen)
			isc_expand_dpb_internal(dpb, dpb_size, isc_dpb_user_name, username.c_str(),
									isc_dpb_password, password.c_str(), 0);