static void
session_init(struct vsf_session* p_sess)
{
/* Get the addresses of the control connection */
vsf_sysutil_getpeername(VSFTP_COMMAND_FD, &p_sess->p_remote_addr);
vsf_sysutil_getsockname(VSFTP_COMMAND_FD, &p_sess->p_local_addr);
/* If anonymous mode is active, fetch the uid of the anonymous user */
if (tunable_anonymous_enable)
{
const struct vsf_sysutil_user* p_user =
vsf_sysutil_getpwnam(tunable_ftp_username);
if (p_user == 0)
{
die("vsftpd: cannot locate user specified in 'ftp_username'");
}
p_sess->anon_ftp_uid = vsf_sysutil_user_getuid(p_user);
if (tunable_chown_uploads)
{
p_user = vsf_sysutil_getpwnam(tunable_chown_username);
if (p_user == 0)
{
die("vsftpd: cannot locate user specified in 'chown_username'");
}
p_sess->anon_upload_chown_uid = vsf_sysutil_user_getuid(p_user);
}
}
}
struct vsf_sysutil_user*
str_getpwnam(const struct mystr* p_user_str)
{
return vsf_sysutil_getpwnam(str_getbuf(p_user_str));
}
int
vsf_sysdep_check_auth(struct mystr* p_user_str,
const struct mystr* p_pass_str,
const struct mystr* p_remote_host)
{
const char* p_crypted;
const struct passwd* p_pwd = (struct passwd*) vsf_sysutil_getpwnam(str_getbuf(p_user_str));
(void) p_remote_host;
if (p_pwd == NULL)
{
return 0;
}
#ifdef VSF_SYSDEP_HAVE_USERSHELL
if (tunable_check_shell)
{
const char* p_shell;
while ((p_shell = getusershell()) != NULL)
{
if (!vsf_sysutil_strcmp(p_shell, p_pwd->pw_shell))
{
break;
}
}
endusershell();
if (p_shell == NULL)
{
return 0;
}
}
#endif
#ifdef VSF_SYSDEP_HAVE_SHADOW
{
const struct spwd* p_spwd = getspnam(str_getbuf(p_user_str));
if (p_spwd != NULL)
{
long curr_time = vsf_sysutil_get_time_sec();
int days;
days = curr_time / (60 * 60 * 24);
if (p_spwd->sp_expire > 0 && p_spwd->sp_expire < days)
{
return 0;
}
if (p_spwd->sp_lstchg > 0 && p_spwd->sp_max > 0 &&
p_spwd->sp_lstchg + p_spwd->sp_max < days)
{
return 0;
}
p_crypted = crypt(str_getbuf(p_pass_str), p_spwd->sp_pwdp);
if (!vsf_sysutil_strcmp(p_crypted, p_spwd->sp_pwdp))
{
return 1;
}
}
}
#endif /* VSF_SYSDEP_HAVE_SHADOW */
p_crypted = crypt(str_getbuf(p_pass_str), p_pwd->pw_passwd);
if (!vsf_sysutil_strcmp(p_crypted, p_pwd->pw_passwd))
{
return 1;
}
return 0;
}
