static int mavis_send_in(mavis_ctx * mcx, av_ctx ** ac)
{
struct passwd *pw;
char *t, *u, *p, *m;
char buf[1024];
t = av_get(*ac, AV_A_TYPE);
u = av_get(*ac, AV_A_USER);
p = av_get(*ac, AV_A_PASSWORD);
if (strcmp(t, AV_V_TYPE_FTP))
return MAVIS_DOWN;
/* no VHOST support yet */
m = av_get(*ac, AV_A_FTP_ANONYMOUS);
if (m && !strcmp(m, AV_V_BOOL_TRUE))
return MAVIS_DOWN;
if (mcx->honour_ftpusers && !valid_user(mcx, u)) {
av_set(*ac, AV_A_COMMENT, "user found in ftpusers file");
av_set(*ac, AV_A_RESULT, AV_V_RESULT_FAIL);
return MAVIS_FINAL;
}
#ifdef HAVE_SHADOWPWD
if (!mcx->passwordfile) {
struct spwd *spw;
uid_t uid;
uid = geteuid();
seteuid(0);
spw = getspnam(u);
seteuid(uid);
if (!spw)
return MAVIS_DOWN;
if (strcmp(spw->sp_pwdp, mcx->crypt(p, spw->sp_pwdp))) {
av_set(*ac, AV_A_COMMENT, "password mismatch");
av_unset(*ac, AV_A_DBPASSWORD);
} else
av_set(*ac, AV_A_DBPASSWORD, p);
pw = getpwnam(u);
if (!pw) {
av_set(*ac, AV_A_COMMENT, "user not found in password file");
av_set(*ac, AV_A_RESULT, AV_V_RESULT_FAIL);
return MAVIS_FINAL;
}
} else
#endif /* HAVE_SHADOWPWD */
{
int f;
f = open(mcx->passwordfile, O_RDONLY);
if (f < 0) {
av_set(*ac, AV_A_COMMENT, "error opening password file");
av_set(*ac, AV_A_RESULT, AV_V_RESULT_ERROR);
return MAVIS_DOWN;
}
pw = get_pwent(mcx, f, u);
close(f);
if (!pw)
return MAVIS_DOWN;
#undef crypt /* may be set by openssl include stuff */
if (strcmp(pw->pw_passwd, mcx->crypt(p, pw->pw_passwd))) {
av_set(*ac, AV_A_COMMENT, "password mismatch");
av_unset(*ac, AV_A_DBPASSWORD);
} else
av_set(*ac, AV_A_DBPASSWORD, p);
}
if (mcx->require_valid_shell && (!pw->pw_shell || !valid_shell(mcx, pw->pw_shell))) {
av_set(*ac, AV_A_COMMENT, "invalid shell");
av_set(*ac, AV_A_RESULT, AV_V_RESULT_FAIL);
return MAVIS_FINAL;
}
if (!pw->pw_dir) {
av_set(*ac, AV_A_COMMENT, "home dir not set");
av_set(*ac, AV_A_RESULT, AV_V_RESULT_FAIL);
return MAVIS_FINAL;
}
av_setf(*ac, AV_A_UID, "%lu", (u_long) pw->pw_uid);
av_setf(*ac, AV_A_GID, "%lu", (u_long) pw->pw_gid);
/* attempt to get supplemental groups */
av_set(*ac, AV_A_GIDS, groups_getlist(pw->pw_name, pw->pw_gid, buf, sizeof(buf)));
if (mcx->ftp_chroot) {
char *tp = strstr(pw->pw_dir, "/./");
if (tp) {
*tp = 0;
av_set(*ac, AV_A_HOME, tp + 2);
} else
av_set(*ac, AV_A_HOME, "/");
av_set(*ac, AV_A_ROOT, pw->pw_dir);
} else {
av_set(*ac, AV_A_HOME, pw->pw_dir);
av_set(*ac, AV_A_ROOT, "/");
}
if (mcx->lookup_sslusers)
lookup_ssluser(mcx, *ac, u);
return MAVIS_FINAL;
}
static int mavis_send_in(mavis_ctx * mcx, av_ctx ** ac)
{
struct passwd *pw;
char *t, *u, *p, *m;
uid_t uid;
int res;
t = av_get(*ac, AV_A_TYPE);
u = av_get(*ac, AV_A_USER);
p = av_get(*ac, AV_A_PASSWORD);
if (strcmp(t, AV_V_TYPE_FTP))
return MAVIS_DOWN;
/* no VHOST support yet */
m = av_get(*ac, AV_A_FTP_ANONYMOUS);
if (m && !strcmp(m, AV_V_BOOL_TRUE))
return MAVIS_DOWN;
if (!(pw = getpwnam(u)))
return MAVIS_DOWN;
if (!pw->pw_dir) {
av_set(*ac, AV_A_COMMENT, "home dir not set");
av_set(*ac, AV_A_RESULT, AV_V_RESULT_FAIL);
return MAVIS_FINAL;
}
uid = geteuid();
seteuid(0);
res = check_auth(mcx, u, p);
seteuid(uid);
/* The PAM routines may have spoiled our logging identity. */
logopen();
if (res) {
char buf[1024];
av_set(*ac, AV_A_DBPASSWORD, p);
av_setf(*ac, AV_A_UID, "%lu", (u_long) pw->pw_uid);
av_setf(*ac, AV_A_GID, "%lu", (u_long) pw->pw_gid);
/* attempt to get supplemental groups */
av_set(*ac, AV_A_GIDS, groups_getlist(pw->pw_name, pw->pw_gid, buf, sizeof(buf)));
if (mcx->ftp_chroot) {
t = strstr(pw->pw_dir, "/./");
if (t) {
*t = 0;
av_set(*ac, AV_A_HOME, t + 2);
} else
av_set(*ac, AV_A_HOME, "/");
av_set(*ac, AV_A_ROOT, pw->pw_dir);
} else {
av_set(*ac, AV_A_HOME, pw->pw_dir);
av_set(*ac, AV_A_ROOT, "/");
}
} else
av_set(*ac, AV_A_RESULT, AV_V_RESULT_FAIL);
return MAVIS_FINAL;
}