void
pass (const char *passwd)
{
if (cred.logged_in || askpasswd == 0)
{
reply (503, "Login with USER first.");
return;
}
askpasswd = 0;
if (!cred.guest) /* "ftp" is the only account allowed no password. */
{
/* Try to authenticate the user. Failed if != 0. */
if (auth_pass (passwd, &cred) != 0)
{
/* Any particular reasons. */
if (cred.message)
{
reply (530, "%s", cred.message);
free (cred.message);
cred.message = NULL;
}
else
reply (530, "Login incorrect.");
if (logging)
syslog (LOG_NOTICE, "FTP LOGIN FAILED FROM %s, %s",
cred.remotehost, curname);
if (login_attempts++ >= 5)
{
syslog (LOG_NOTICE, "repeated login failures from %s",
cred.remotehost);
exit (0);
}
return;
}
}
cred.logged_in = 1; /* Everything seems to be allright. */
complete_login (&cred);
login_attempts = 0; /* This time successful. */
}
void nntp(void)
{
char buf[4096];
int len;
while (TRUE) {
IsDoing("Waiting");
len = get_nntp(buf, sizeof(buf) -1);
if (len < 0)
return;
if (len == 0)
continue;
if (strcasestr(buf, (char *)"AUTHINFO PASS") == NULL) {
Syslog('n', "< \"%s\"", printable(buf, 0));
} else {
Syslog('n', "< \"AUTHINFO PASS ********\"");
}
if (! check_free()) {
send_nntp("400 server closed");
return;
}
/*
* Process received command
*/
if (strncasecmp(buf, "QUIT", 4) == 0) {
send_nntp("205 Goodbye\r\n");
return;
} else if (strncasecmp(buf, "AUTHINFO USER", 13) == 0) {
auth_user(buf);
} else if (strncasecmp(buf, "AUTHINFO PASS", 13) == 0) {
auth_pass(buf);
} else if (strncasecmp(buf, "ARTICLE", 7) == 0) {
if (check_auth(buf))
command_abhs(buf);
} else if (strncasecmp(buf, "BODY", 4) == 0) {
if (check_auth(buf))
command_abhs(buf);
} else if (strncasecmp(buf, "LIST", 4) == 0) {
if (check_auth(buf))
command_list(buf);
} else if (strncasecmp(buf, "GROUP", 5) == 0) {
if (check_auth(buf))
command_group(buf);
} else if (strncasecmp(buf, "HEAD", 4) == 0) {
if (check_auth(buf))
command_abhs(buf);
} else if (strncasecmp(buf, "POST", 4) == 0) {
if (check_auth(buf))
command_post(buf);
} else if (strncasecmp(buf, "IHAVE", 5) == 0) {
send_nntp("435 Article not wanted - do not send it");
} else if (strncasecmp(buf, "NEWGROUPS", 9) == 0) {
send_nntp("235 Warning: NEWGROUPS not implemented, returning empty list");
send_nntp(".");
} else if (strncasecmp(buf, "NEWNEWS", 7) == 0) {
send_nntp("230 Warning: NEWNEWS not implemented, returning empty list");
send_nntp(".");
} else if (strncasecmp(buf, "SLAVE", 5) == 0) {
send_nntp("202 Slave status noted");
} else if (strncasecmp(buf, "STAT", 4) == 0) {
if (check_auth(buf))
command_abhs(buf);
} else if (strncasecmp(buf, "MODE READER", 11) == 0) {
if (check_auth(buf)) {
if (authorized)
send_nntp("200 Server ready, posting allowed");
else
send_nntp("201 Server ready, no posting allowed");
}
} else if (strncasecmp(buf, "XOVER", 5) == 0) {
if (check_auth(buf))
command_xover(buf);
} else if (strncasecmp(buf, "HELP", 4) == 0) {
send_nntp("100 Help text follows");
send_nntp("Recognized commands:");
send_nntp("");
send_nntp("ARTICLE");
send_nntp("AUTHINFO");
send_nntp("BODY");
send_nntp("GROUP");
send_nntp("HEAD");
send_nntp("IHAVE (not implemented, messages are always rejected)");
send_nntp("LIST");
send_nntp("NEWGROUPS (not implemented, always returns an empty list)");
send_nntp("NEWNEWS (not implemented, always returns an empty list)");
send_nntp("POST");
send_nntp("QUIT");
send_nntp("SLAVE (has no effect)");
send_nntp("STAT");
send_nntp("XOVER");
send_nntp("");
send_nntp("FTNNNTP supports most of RFC-977 and also has support for AUTHINFO and");
send_nntp("limited XOVER support (RFC-2980)");
send_nntp(".");
} else {
send_nntp("500 Unknown command");
}
}
}
