static void
telnet_parse( const struct Banner1 *banner1,
void *banner1_private,
struct ProtocolState *pstate,
const unsigned char *px, size_t length,
struct BannerOutput *banout,
struct InteractiveData *more)
{
unsigned state = pstate->state;
unsigned i;
UNUSEDPARM(banner1_private);
UNUSEDPARM(banner1);
UNUSEDPARM(more);
for (i=0; i<length; i++)
switch (state) {
case 0:
if (px[i] == '\r')
continue;
if (px[i] == '\n' || px[i] == '\0' || !isprint(px[i])) {
state++;
tcp_close(more);
continue;
}
banout_append_char(banout, PROTO_SSH2, px[i]);
break;
default:
i = (unsigned)length;
break;
}
pstate->state = state;
}
static void
imap4_parse( const struct Banner1 *banner1,
void *banner1_private,
struct ProtocolState *pstate,
const unsigned char *px, size_t length,
struct BannerOutput *banout,
struct InteractiveData *more)
{
unsigned state = pstate->state;
unsigned i;
UNUSEDPARM(banner1_private);
UNUSEDPARM(banner1);
for (i=0; i<length; i++) {
if (px[i] == '\r')
continue;
switch (state) {
case 0:
banout_append_char(banout, PROTO_IMAP4, px[i]);
if (px[i] == '*')
state++;
else
state = STATE_DONE;
break;
case 1:
if (px[i] == ' ') {
banout_append_char(banout, PROTO_IMAP4, px[i]);
continue;
} else
state++;
/* fall through */
case 2:
banout_append_char(banout, PROTO_IMAP4, px[i]);
if (px[i] == 'O')
state++;
else
state = STATE_DONE;
break;
case 3:
banout_append_char(banout, PROTO_IMAP4, px[i]);
if (px[i] == 'K')
state++;
else
state = STATE_DONE;
break;
case 4:
if (px[i] == ' ') {
banout_append_char(banout, PROTO_IMAP4, px[i]);
state++;
break;
} else if (px[i] != '\n') {
banout_append_char(banout, PROTO_IMAP4, px[i]);
/* no transition */
break;
} else {
state++;
/* fall through */
}
case 5:
banout_append_char(banout, PROTO_IMAP4, px[i]);
if (px[i] == '\n') {
tcp_transmit(more, "a001 CAPABILITY\r\n", 17);
state = 100;
}
break;
case 100:
case 300:
banout_append_char(banout, PROTO_IMAP4, px[i]);
if (px[i] == '*')
state += 100;
else if (px[i] == 'a')
state++;
else
state = STATE_DONE;
break;
case 101:
case 301:
banout_append_char(banout, PROTO_IMAP4, px[i]);
if (px[i] == '0')
state++;
else
state = STATE_DONE;
break;
case 102:
case 302:
banout_append_char(banout, PROTO_IMAP4, px[i]);
if (px[i] == '0')
state++;
else
state = STATE_DONE;
break;
case 103:
banout_append_char(banout, PROTO_IMAP4, px[i]);
if (px[i] == '1')
state++;
else
state = STATE_DONE;
break;
case 303:
banout_append_char(banout, PROTO_IMAP4, px[i]);
if (px[i] == '2')
state++;
else
state = STATE_DONE;
break;
case 104:
case 304:
banout_append_char(banout, PROTO_IMAP4, px[i]);
if (px[i] == ' ')
state++;
else
state = STATE_DONE;
break;
case 105:
banout_append_char(banout, PROTO_IMAP4, px[i]);
if (px[i] == '\n') {
tcp_transmit(more, "a002 STARTTLS\r\n", 15);
state = 300;
}
break;
case 200:
case 400:
banout_append_char(banout, PROTO_IMAP4, px[i]);
if (px[i] == '\n')
state -= 100;
break;
case 305:
if (px[i] == '\n') {
/* change the state here to SSL */
unsigned port = pstate->port;
memset(pstate, 0, sizeof(*pstate));
pstate->app_proto = PROTO_SSL3;
pstate->is_sent_sslhello = 1;
pstate->port = (unsigned short)port;
state = 0;
more->payload = banner_ssl.hello;
more->length = (unsigned)banner_ssl.hello_length;
break;
}
break;
default:
i = (unsigned)length;
break;
}
}
pstate->state = state;
}
static void
smtp_parse( const struct Banner1 *banner1,
void *banner1_private,
struct ProtocolState *pstate,
const unsigned char *px, size_t length,
struct BannerOutput *banout,
struct InteractiveData *more)
{
unsigned state = pstate->state;
unsigned i;
struct SMTPSTUFF *smtp = &pstate->sub.smtp;
UNUSEDPARM(banner1_private);
UNUSEDPARM(banner1);
for (i=0; i<length; i++) {
switch (state) {
case 0:
case 100:
case 200:
smtp->code = 0;
state++;
/* fall through */
case 1:
case 2:
case 3:
case 101:
case 102:
case 103:
case 201:
case 202:
case 203:
if (!isdigit(px[i]&0xFF)) {
state = STATE_DONE;
} else {
smtp->code *= 10;
smtp->code += (px[i] - '0');
state++;
banout_append_char(banout, PROTO_SMTP, px[i]);
}
break;
case 4:
case 104:
case 204:
if (px[i] == ' ') {
smtp->is_last = 1;
state++;
banout_append_char(banout, PROTO_SMTP, px[i]);
} else if (px[i] == '-') {
smtp->is_last = 0;
state++;
banout_append_char(banout, PROTO_SMTP, px[i]);
} else {
state = STATE_DONE;
}
break;
case 5:
if (px[i] == '\r')
continue;
else if (px[i] == '\n') {
if (smtp->is_last) {
more->payload = "EHLO masscan\r\n";
more->length = 14;
state = 100;
banout_append_char(banout, PROTO_SMTP, px[i]);
} else {
banout_append_char(banout, PROTO_SMTP, px[i]);
state = 0;
}
} else if (px[i] == '\0' || !isprint(px[i])) {
state = STATE_DONE;
continue;
} else {
banout_append_char(banout, PROTO_SMTP, px[i]);
}
break;
case 105:
if (px[i] == '\r')
continue;
else if (px[i] == '\n') {
if (smtp->is_last) {
more->payload = "STARTTLS\r\n";
more->length = 10;
state = 200;
banout_append_char(banout, PROTO_SMTP, px[i]);
} else {
banout_append_char(banout, PROTO_SMTP, px[i]);
state = 100;
}
} else if (px[i] == '\0' || !isprint(px[i])) {
state = STATE_DONE;
continue;
} else {
banout_append_char(banout, PROTO_SMTP, px[i]);
}
break;
case 205:
if (px[i] == '\r')
continue;
else if (px[i] == '\n') {
if (smtp->code == 220) {
/* change the state here to SSL */
unsigned port = pstate->port;
memset(pstate, 0, sizeof(*pstate));
pstate->app_proto = PROTO_SSL3;
pstate->is_sent_sslhello = 1;
pstate->port = (unsigned short)port;
state = 0;
more->payload = banner_ssl.hello;
more->length = (unsigned)banner_ssl.hello_length;
} else {
state = STATE_DONE;
}
} else if (px[i] == '\0' || !isprint(px[i])) {
state = STATE_DONE;
continue;
} else {
banout_append_char(banout, PROTO_SMTP, px[i]);
}
break;
default:
i = (unsigned)length;
break;
}
}
pstate->state = state;
}
static void
pop3_parse( const struct Banner1 *banner1,
void *banner1_private,
struct ProtocolState *pstate,
const unsigned char *px, size_t length,
struct BannerOutput *banout,
struct InteractiveData *more)
{
unsigned state = pstate->state;
unsigned i;
UNUSEDPARM(banner1_private);
UNUSEDPARM(banner1);
for (i=0; i<length; i++) {
if (px[i] == '\r')
continue;
switch (state) {
case 0: case 1: case 2:
banout_append_char(banout, PROTO_POP3, px[i]);
if ("+OK"[state] != px[i])
state = STATE_DONE;
else
state++;
break;
case 3:
banout_append_char(banout, PROTO_POP3, px[i]);
if (px[i] == '\n') {
tcp_transmit(more, "CAPA\r\n", 6);
state++;
}
break;
case 4:
case 204:
banout_append_char(banout, PROTO_POP3, px[i]);
if (px[i] == '-')
state = 100;
else if (px[i] == '+')
state++;
else {
state = STATE_DONE;
}
break;
case 5:
case 205:
banout_append_char(banout, PROTO_POP3, px[i]);
if (px[i] == 'O')
state++;
else
state = STATE_DONE;
break;
case 6:
case 206:
banout_append_char(banout, PROTO_POP3, px[i]);
if (px[i] == 'K')
state += 2; /* oops, I had too many states here */
else
state = STATE_DONE;
break;
case 8:
if (px[i] == '\r')
continue;
banout_append_char(banout, PROTO_POP3, px[i]);
if (px[i] == '\n')
state++;
break;
case 9:
if (px[i] == '\r')
continue;
banout_append_char(banout, PROTO_POP3, px[i]);
if (px[i] == '.')
state++;
else if (px[i] == '\n')
continue;
else
state--;
break;
case 10:
if (px[i] == '\r')
continue;
banout_append_char(banout, PROTO_POP3, px[i]);
if (px[i] == '\n') {
tcp_transmit(more, "STLS\r\n", 6);
state = 204;
} else {
state = 8;
}
break;
case 208:
if (px[i] == '\r')
continue;
banout_append_char(banout, PROTO_POP3, px[i]);
if (px[i] == '\n') {
/* change the state here to SSL */
unsigned port = pstate->port;
memset(pstate, 0, sizeof(*pstate));
pstate->app_proto = PROTO_SSL3;
pstate->is_sent_sslhello = 1;
pstate->port = (unsigned short)port;
state = 0;
more->payload = banner_ssl.hello;
more->length = (unsigned)banner_ssl.hello_length;
break;
}
break;
case 100:
if (px[i] == '\r')
continue;
banout_append_char(banout, PROTO_POP3, px[i]);
if (px[i] == '\n')
state = STATE_DONE;
break;
default:
i = (unsigned)length;
break;
}
}
pstate->state = state;
}
