123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172 |
- #ifndef TFTP_H
- #define TFTP_H
-
- /** @file */
-
- #include <gpxe/in.h>
- #include "buffer.h"
- #include "nic.h"
- #include "ip.h"
- #include "udp.h"
-
- #define TFTP_PORT 69 /**< Default TFTP server port */
- #define TFTP_DEFAULT_BLKSIZE 512
- #define TFTP_MAX_BLKSIZE 1432 /* 512 */
-
- #define TFTP_RRQ 1
- #define TFTP_WRQ 2
- #define TFTP_DATA 3
- #define TFTP_ACK 4
- #define TFTP_ERROR 5
- #define TFTP_OACK 6
-
- #define TFTP_ERR_FILE_NOT_FOUND 1 /**< File not found */
- #define TFTP_ERR_ACCESS_DENIED 2 /**< Access violation */
- #define TFTP_ERR_DISK_FULL 3 /**< Disk full or allocation exceeded */
- #define TFTP_ERR_ILLEGAL_OP 4 /**< Illegal TFTP operation */
- #define TFTP_ERR_UNKNOWN_TID 5 /**< Unknown transfer ID */
- #define TFTP_ERR_FILE_EXISTS 6 /**< File already exists */
- #define TFTP_ERR_UNKNOWN_USER 7 /**< No such user */
- #define TFTP_ERR_BAD_OPTS 8 /**< Option negotiation failed */
-
- /** A TFTP request (RRQ) packet */
- struct tftp_rrq {
- struct iphdr ip;
- struct udphdr udp;
- uint16_t opcode;
- char data[TFTP_DEFAULT_BLKSIZE];
- } PACKED;
-
- /** A TFTP data (DATA) packet */
- struct tftp_data {
- struct iphdr ip;
- struct udphdr udp;
- uint16_t opcode;
- uint16_t block;
- uint8_t data[TFTP_MAX_BLKSIZE];
- } PACKED;
-
- /** A TFTP acknowledgement (ACK) packet */
- struct tftp_ack {
- struct iphdr ip;
- struct udphdr udp;
- uint16_t opcode;
- uint16_t block;
- } PACKED;
-
- /** A TFTP error (ERROR) packet */
- struct tftp_error {
- struct iphdr ip;
- struct udphdr udp;
- uint16_t opcode;
- uint16_t errcode;
- char errmsg[TFTP_DEFAULT_BLKSIZE];
- } PACKED;
-
- /** A TFTP options acknowledgement (OACK) packet */
- struct tftp_oack {
- struct iphdr ip;
- struct udphdr udp;
- uint16_t opcode;
- uint8_t data[TFTP_DEFAULT_BLKSIZE];
- } PACKED;
-
- /** The common header of all TFTP packets */
- struct tftp_common {
- struct iphdr ip;
- struct udphdr udp;
- uint16_t opcode;
- } PACKED;
-
- /** A union encapsulating all TFTP packet types */
- union tftp_any {
- struct tftp_common common;
- struct tftp_rrq rrq;
- struct tftp_data data;
- struct tftp_ack ack;
- struct tftp_error error;
- struct tftp_oack oack;
- };
-
- /**
- * TFTP state
- *
- * This data structure holds the state for an ongoing TFTP transfer.
- */
- struct tftp_state {
- /** TFTP server address
- *
- * This is the IP address and UDP port from which data packets
- * will be sent, and to which ACK packets should be sent.
- */
- struct sockaddr_in server;
- /** TFTP client port
- *
- * This is the UDP port from which the open request will be
- * sent, and to which any unicast data packets will be sent.
- */
- uint16_t lport;
- /** TFTP multicast address
- *
- * This is the IP address and UDP port to which multicast data
- * packets, if any, will be sent.
- */
- struct sockaddr_in multicast;
- /** Master client
- *
- * This will be true if the client is the master client for a
- * multicast protocol (i.e. MTFTP or TFTM). (It will always
- * be true for a non-multicast protocol, i.e. plain old TFTP).
- */
- int master;
- /** Data block size
- *
- * This is the "blksize" option negotiated with the TFTP
- * server. (If the TFTP server does not support TFTP options,
- * this will default to 512).
- */
- unsigned int blksize;
- /** File size
- *
- * This is the value returned in the "tsize" option from the
- * TFTP server. If the TFTP server does not support the
- * "tsize" option, this value will be zero.
- */
- off_t tsize;
- /** Last received block
- *
- * The block number of the most recent block received from the
- * TFTP server. Note that the first data block is block 1; a
- * value of 0 indicates that no data blocks have yet been
- * received.
- *
- * For multicast TFTP protocols, where the blocks may not be
- * received in strict order, the meaning of this field changes
- * slightly, to "first missing block minus one". For example,
- * suppose that we have received blocks 1, 2, 4 and 5; this
- * field would then have the value 2, since the first missing
- * block is block 3. If the blocks do arrive in strict order,
- * this definition is exactly equivalent to "most recently
- * received block".
- */
- unsigned int block;
- };
-
-
-
- struct tftpreq_info_t {
- struct sockaddr_in *server;
- const char *name;
- unsigned short blksize;
- } PACKED;
-
- struct tftpblk_info_t {
- char *data;
- unsigned int block;
- unsigned int len;
- int eof;
- } PACKED;
-
- #define TFTP_MIN_PACKET (sizeof(struct iphdr) + sizeof(struct udphdr) + 4)
-
- #endif /* TFTP_H */
|