diff options
Diffstat (limited to 'accel-pppd/ctrl/sstp/sstp_prot.h')
| -rw-r--r-- | accel-pppd/ctrl/sstp/sstp_prot.h | 182 |
1 files changed, 182 insertions, 0 deletions
diff --git a/accel-pppd/ctrl/sstp/sstp_prot.h b/accel-pppd/ctrl/sstp/sstp_prot.h new file mode 100644 index 0000000..f9f78d8 --- /dev/null +++ b/accel-pppd/ctrl/sstp/sstp_prot.h @@ -0,0 +1,182 @@ +#ifndef SSTP_PROT_H +#define SSTP_PROT_H + +#include <stdint.h> + +/* Constants */ +#define SSTP_PORT 443 +#define SSTP_HTTP_METHOD "SSTP_DUPLEX_POST" +#define SSTP_HTTP_URI "/sra_{BA195980-CD49-458b-9E23-C84EE0ADCD75}/" +#define SSTP_VERSION 0x10 +#define SSTP_MAX_PACKET_SIZE 4095 +#define SSTP_NONCE_SIZE 32 +#define SSTP_NEGOTIOATION_TIMEOUT 60 +#define SSTP_HELLO_TIMEOUT 60 +#define SSTP_ABORT_TIMEOUT_1 3 +#define SSTP_ABORT_TIMEOUT_2 1 +#define SSTP_DISCONNECT_TIMEOUT_1 5 +#define SSTP_DISCONNECT_TIMEOUT_2 1 + +/* Packet Type */ +enum { + SSTP_DATA_PACKET = 0x00, + SSTP_CTRL_PACKET = 0x01, +}; + +/* Message Type */ +enum { + SSTP_MSG_CALL_CONNECT_REQUEST = 0x0001, + SSTP_MSG_CALL_CONNECT_ACK = 0x0002, + SSTP_MSG_CALL_CONNECT_NAK = 0x0003, + SSTP_MSG_CALL_CONNECTED = 0x0004, + SSTP_MSG_CALL_ABORT = 0x0005, + SSTP_MSG_CALL_DISCONNECT = 0x0006, + SSTP_MSG_CALL_DISCONNECT_ACK = 0x0007, + SSTP_MSG_ECHO_REQUEST = 0x0008, + SSTP_MSG_ECHO_RESPONSE = 0x0009, +}; + +/* Attribute ID */ +enum { + SSTP_ATTRIB_NO_ERROR = 0x00, + SSTP_ATTRIB_ENCAPSULATED_PROTOCOL_ID = 0x01, + SSTP_ATTRIB_STATUS_INFO = 0x02, + SSTP_ATTRIB_CRYPTO_BINDING = 0x03, + SSTP_ATTRIB_CRYPTO_BINDING_REQ = 0x04, +}; + +/* Protocol ID */ +enum { + SSTP_ENCAPSULATED_PROTOCOL_PPP = 0x0001, +}; + +/* Hash Protocol Bitmask */ +enum { + CERT_HASH_PROTOCOL_SHA1 = 0x01, + CERT_HASH_PROTOCOL_SHA256 = 0x02, +}; + +/* Status */ +enum { + ATTRIB_STATUS_NO_ERROR = 0x00000000, + ATTRIB_STATUS_DUPLICATE_ATTRIBUTE = 0x00000001, + ATTRIB_STATUS_UNRECOGNIZED_ATTRIBUTE = 0x00000002, + ATTRIB_STATUS_INVALID_ATTRIB_VALUE_LENGTH = 0x00000003, + ATTRIB_STATUS_VALUE_NOT_SUPPORTED = 0x00000004, + ATTRIB_STATUS_UNACCEPTED_FRAME_RECEIVED = 0x00000005, + ATTRIB_STATUS_RETRY_COUNT_EXCEEDED = 0x00000006, + ATTRIB_STATUS_INVALID_FRAME_RECEIVED = 0x00000007, + ATTRIB_STATUS_NEGOTIATION_TIMEOUT = 0x00000008, + ATTRIB_STATUS_ATTRIB_NOT_SUPPORTED_IN_MSG = 0x00000009, + ATTRIB_STATUS_REQUIRED_ATTRIBUTE_MISSING = 0x0000000a, + ATTRIB_STATUS_STATUS_INFO_NOT_SUPPORTED_IN_MSG = 0x0000000b, +}; + +/* State */ +enum { + STATE_SERVER_CALL_DISCONNECTED = 0, + STATE_SERVER_CONNECT_REQUEST_PENDING, + STATE_SERVER_CALL_CONNECTED_PENDING, + STATE_SERVER_CALL_CONNECTED, + STATE_CALL_ABORT_IN_PROGRESS_1, + STATE_CALL_ABORT_IN_PROGRESS_2, + STATE_CALL_ABORT_TIMEOUT_PENDING, + STATE_CALL_ABORT_PENDING, + STATE_CALL_DISCONNECT_IN_PROGRESS_1, + STATE_CALL_DISCONNECT_IN_PROGRESS_2, + STATE_CALL_DISCONNECT_TIMEOUT_PENDING, + STATE_CALL_DISCONNECT_ACK_PENDING, +}; + +/* Packets */ +struct sstp_hdr { + uint8_t version; + uint8_t reserved; + uint16_t length; + uint8_t data[0]; +} __attribute__((packed)); + +struct sstp_ctrl_hdr { + uint8_t version; + uint8_t reserved; + uint16_t length; + uint16_t message_type; + uint16_t num_attributes; + uint8_t data[0]; +} __attribute__((packed)); + +struct sstp_attr_hdr { + uint8_t reserved; + uint8_t attribute_id; + uint16_t length; + uint8_t data[0]; +} __attribute__((packed)); + +struct sstp_attrib_encapsulated_protocol { + struct sstp_attr_hdr hdr; + uint16_t protocol_id; +} __attribute__((packed)); + +struct sstp_attrib_status_info { + struct sstp_attr_hdr hdr; + uint8_t reserved[3]; + uint8_t attrib_id; + uint32_t status; + uint8_t attrib_value[0]; +} __attribute__((packed)); + +struct sstp_attrib_crypto_binding { + struct sstp_attr_hdr hdr; + uint8_t reserved[3]; + uint8_t hash_protocol_bitmask; + uint8_t nonce[SSTP_NONCE_SIZE]; + uint8_t cert_hash[32]; + uint8_t compound_mac[32]; +} __attribute__((packed)); + +struct sstp_attrib_crypto_binding_request { + struct sstp_attr_hdr hdr; + uint8_t reserved[3]; + uint8_t hash_protocol_bitmask; + uint8_t nonce[SSTP_NONCE_SIZE]; +} __attribute__((packed)); + +#define SSTP_DATA_HDR(len) { \ + .version = SSTP_VERSION, \ + .reserved = SSTP_DATA_PACKET, \ + .length = htons(len), \ +} + +#define SSTP_CTRL_HDR(type, len, num) { \ + .version = SSTP_VERSION, \ + .reserved = SSTP_CTRL_PACKET, \ + .length = htons(len), \ + .message_type = htons(type), \ + .num_attributes = htons(num) \ +} + +#define SSTP_ATTR_HDR(id, len) { \ + .attribute_id = id, \ + .length = htons(len) \ +} + +#define INIT_SSTP_DATA_HDR(hdr, len) { \ + (hdr)->version = SSTP_VERSION; \ + (hdr)->reserved = SSTP_DATA_PACKET; \ + (hdr)->length = htons(len); \ +} + +#define INIT_SSTP_CTRL_HDR(hdr, type, num, len) {\ + (hdr)->version = SSTP_VERSION; \ + (hdr)->reserved = SSTP_CTRL_PACKET; \ + (hdr)->length = htons(len); \ + (hdr)->message_type = htons(type); \ + (hdr)->num_attributes = htons(num); \ +} + +#define INIT_SSTP_ATTR_HDR(hdr, id, len) { \ + (hdr)->attribute_id = id; \ + (hdr)->length = htons(len); \ +} + +#endif |