/**********************************************************************
*%FUNCTION: parsePADSTags
*%ARGUMENTS:
* type -- tag type
* len -- tag length
* data -- tag data
* extra -- extra user data (pointer to PPPoEConnection structure)
*%RETURNS:
* Nothing
*%DESCRIPTION:
* Picks interesting tags out of a PADS packet
***********************************************************************/
static void
parsePADSTags(UINT16_t type, UINT16_t len, unsigned char *data,
void *extra)
{
PPPoEConnection *conn = (PPPoEConnection *) extra;
switch(type) {
case TAG_SERVICE_NAME:
syslog(LOG_DEBUG, "PADS: Service-Name: '%.*s'", (int) len, data);
break;
case TAG_GENERIC_ERROR:
case TAG_AC_SYSTEM_ERROR:
case TAG_SERVICE_NAME_ERROR:
pktLogErrs("PADS", type, len, data, extra);
conn->PADSHadError = 1;
break;
case TAG_RELAY_SESSION_ID:
conn->relayId.type = htons(type);
conn->relayId.length = htons(len);
memcpy(conn->relayId.payload, data, len);
break;
}
}
/**********************************************************************
*%FUNCTION: parsePADSTags
*%ARGUMENTS:
* type -- tag type
* len -- tag length
* data -- tag data
* extra -- extra user data (pointer to PPPoEConnection structure)
*%RETURNS:
* Nothing
*%DESCRIPTION:
* Picks interesting tags out of a PADS packet
***********************************************************************/
static void
parsePADSTags(UINT16_t type, UINT16_t len, unsigned char *data,
void *extra)
{
#ifdef PLUGIN
UINT16_t mru;
#endif
PPPoEConnection *conn = (PPPoEConnection *) extra;
switch(type) {
case TAG_SERVICE_NAME:
syslog(LOG_DEBUG, "PADS: Service-Name: '%.*s'", (int) len, data);
break;
case TAG_GENERIC_ERROR:
case TAG_AC_SYSTEM_ERROR:
case TAG_SERVICE_NAME_ERROR:
pktLogErrs("PADS", type, len, data, extra);
conn->PADSHadError = 1;
break;
case TAG_RELAY_SESSION_ID:
conn->relayId.type = htons(type);
conn->relayId.length = htons(len);
memcpy(conn->relayId.payload, data, len);
break;
#ifdef PLUGIN
case TAG_PPP_MAX_PAYLOAD:
if (len == sizeof(mru)) {
memcpy(&mru, data, sizeof(mru));
mru = ntohs(mru);
if (mru >= ETH_PPPOE_MTU) {
if (lcp_allowoptions[0].mru > mru) lcp_allowoptions[0].mru = mru;
if (lcp_wantoptions[0].mru > mru) lcp_wantoptions[0].mru = mru;
conn->seenMaxPayload = 1;
}
}
break;
#endif
}
}
/**********************************************************************
*%FUNCTION: parsePADOTags
*%ARGUMENTS:
* type -- tag type
* len -- tag length
* data -- tag data
* extra -- extra user data. Should point to a PacketCriteria structure
* which gets filled in according to selected AC name and service
* name.
*%RETURNS:
* Nothing
*%DESCRIPTION:
* Picks interesting tags out of a PADO packet
***********************************************************************/
static void
parsePADOTags(UINT16_t type, UINT16_t len, unsigned char *data,
void *extra)
{
struct PacketCriteria *pc = (struct PacketCriteria *) extra;
PPPoEConnection *conn = pc->conn;
int i;
switch(type) {
case TAG_AC_NAME:
pc->seenACName = 1;
if (conn->printACNames) {
printf("Access-Concentrator: %.*s\n", (int) len, data);
}
if (conn->acName && len == strlen(conn->acName) &&
!strncmp((char *) data, conn->acName, len)) {
pc->acNameOK = 1;
}
break;
case TAG_SERVICE_NAME:
pc->seenServiceName = 1;
if (conn->printACNames && len > 0) {
printf(" Service-Name: %.*s\n", (int) len, data);
}
if (conn->serviceName && len == strlen(conn->serviceName) &&
!strncmp((char *) data, conn->serviceName, len)) {
pc->serviceNameOK = 1;
}
break;
case TAG_AC_COOKIE:
if (conn->printACNames) {
printf("Got a cookie:");
/* Print first 20 bytes of cookie */
for (i=0; i<len && i < 20; i++) {
printf(" %02x", (unsigned) data[i]);
}
if (i < len) printf("...");
printf("\n");
}
conn->cookie.type = htons(type);
conn->cookie.length = htons(len);
memcpy(conn->cookie.payload, data, len);
break;
case TAG_RELAY_SESSION_ID:
if (conn->printACNames) {
printf("Got a Relay-ID:");
/* Print first 20 bytes of relay ID */
for (i=0; i<len && i < 20; i++) {
printf(" %02x", (unsigned) data[i]);
}
if (i < len) printf("...");
printf("\n");
}
conn->relayId.type = htons(type);
conn->relayId.length = htons(len);
memcpy(conn->relayId.payload, data, len);
break;
case TAG_SERVICE_NAME_ERROR:
if (conn->printACNames) {
printf("Got a Service-Name-Error tag: %.*s\n", (int) len, data);
} else {
pktLogErrs("PADO", type, len, data, extra);
exit(1);
}
break;
case TAG_AC_SYSTEM_ERROR:
if (conn->printACNames) {
printf("Got a System-Error tag: %.*s\n", (int) len, data);
} else {
pktLogErrs("PADO", type, len, data, extra);
exit(1);
}
break;
case TAG_GENERIC_ERROR:
if (conn->printACNames) {
printf("Got a Generic-Error tag: %.*s\n", (int) len, data);
} else {
pktLogErrs("PADO", type, len, data, extra);
exit(1);
}
break;
}
}
/**********************************************************************
*%FUNCTION: parsePADOTags
*%ARGUMENTS:
* type -- tag type
* len -- tag length
* data -- tag data
* extra -- extra user data. Should point to a PacketCriteria structure
* which gets filled in according to selected AC name and service
* name.
*%RETURNS:
* Nothing
*%DESCRIPTION:
* Picks interesting tags out of a PADO packet
***********************************************************************/
static void
parsePADOTags(UINT16_t type, UINT16_t len, unsigned char *data,
void *extra)
{
struct PacketCriteria *pc = (struct PacketCriteria *) extra;
PPPoEConnection *conn = pc->conn;
int i;
#ifdef PLUGIN
UINT16_t mru;
#endif
switch(type) {
case TAG_AC_NAME:
pc->seenACName = 1;
if (conn->printACNames) {
printf("Access-Concentrator: %.*s\n", (int) len, data);
}
if (conn->acName && len == strlen(conn->acName) &&
!strncmp((char *) data, conn->acName, len)) {
pc->acNameOK = 1;
}
break;
case TAG_SERVICE_NAME:
pc->seenServiceName = 1;
if (conn->printACNames && len > 0) {
printf(" Service-Name: %.*s\n", (int) len, data);
}
if (conn->serviceName && len == strlen(conn->serviceName) &&
!strncmp((char *) data, conn->serviceName, len)) {
pc->serviceNameOK = 1;
}
break;
case TAG_AC_COOKIE:
if (conn->printACNames) {
printf("Got a cookie:");
/* Print first 20 bytes of cookie */
for (i=0; i<len && i < 20; i++) {
printf(" %02x", (unsigned) data[i]);
}
if (i < len) printf("...");
printf("\n");
}
conn->cookie.type = htons(type);
conn->cookie.length = htons(len);
memcpy(conn->cookie.payload, data, len);
break;
case TAG_RELAY_SESSION_ID:
if (conn->printACNames) {
printf("Got a Relay-ID:");
/* Print first 20 bytes of relay ID */
for (i=0; i<len && i < 20; i++) {
printf(" %02x", (unsigned) data[i]);
}
if (i < len) printf("...");
printf("\n");
}
conn->relayId.type = htons(type);
conn->relayId.length = htons(len);
memcpy(conn->relayId.payload, data, len);
break;
case TAG_SERVICE_NAME_ERROR:
if (conn->printACNames) {
printf("Got a Service-Name-Error tag: %.*s\n", (int) len, data);
} else {
pktLogErrs("PADO", type, len, data, extra);
pc->gotError = 1;
if (!persist) {
exit(1);
}
}
break;
case TAG_AC_SYSTEM_ERROR:
if (conn->printACNames) {
printf("Got a System-Error tag: %.*s\n", (int) len, data);
} else {
pktLogErrs("PADO", type, len, data, extra);
pc->gotError = 1;
if (!persist) {
exit(1);
}
}
break;
case TAG_GENERIC_ERROR:
if (conn->printACNames) {
printf("Got a Generic-Error tag: %.*s\n", (int) len, data);
} else {
pktLogErrs("PADO", type, len, data, extra);
pc->gotError = 1;
if (!persist) {
exit(1);
}
}
break;
#ifdef PLUGIN
case TAG_PPP_MAX_PAYLOAD:
if (len == sizeof(mru)) {
memcpy(&mru, data, sizeof(mru));
mru = ntohs(mru);
if (mru >= ETH_PPPOE_MTU) {
if (lcp_allowoptions[0].mru > mru) lcp_allowoptions[0].mru = mru;
if (lcp_wantoptions[0].mru > mru) lcp_wantoptions[0].mru = mru;
conn->seenMaxPayload = 1;
}
}
break;
#endif
}
}
