181 static inline int check_data( uint8_t *packet, uint16_t *opcode,   in check_data()  argument
184   *opcode = (uint16_t) packet[0] << 8 | (uint16_t) packet[1];  in check_data()
186     *blockno = (uint16_t) packet[2] << 8 | (uint16_t) packet[3];  in check_data()
193 static int mkpkt_data(int fd, off_t offset, uint8_t *packet, uint16_t blockno)  in mkpkt_data()  argument
198   packet[0] = TFTP_OP_DATA >> 8;  in mkpkt_data()
199   packet[1] = TFTP_OP_DATA & 0xff;  in mkpkt_data()
200   packet[2] = blockno >> 8;  in mkpkt_data()
201   packet[3] = blockno & 0xff;  in mkpkt_data()
207   nbytesread = readall(fd, &packet[TFTP_DATAHEADERSIZE], TFTP_DATASIZE);  in mkpkt_data()
213 static int read_ack(int sd, uint8_t *packet, struct sockaddr_storage *server,  in read_ack()  argument
223       nbytes = read_server(sd, packet, TFTP_IOBUFSIZE, &from);  in read_ack()
242           packetlen = mkpkt_err(packet, TFTP_ER_UNKID, TFTP_ES_UNKID);  in read_ack()
243           (void) write_server(sd, packet, packetlen, server);  in read_ack()
246         opcode = (uint16_t) packet[0] << 8 | (uint16_t) packet[1];  in read_ack()
247         rblockno = (uint16_t) packet[2] << 8 | (uint16_t) packet[3];  in read_ack()
252             packetlen = mkpkt_err(packet, TFTP_ER_ILLEGALOP, TFTP_ES_ILLEGALOP);  in read_ack()
253             (void) write_server(sd, packet, packetlen, server);  in read_ack()
270   uint8_t *packet;  in file_get()  local
276   packet = (uint8_t*) xzalloc(TFTP_IOBUFSIZE);  in file_get()
279   len = mkpkt_request(packet, TFTP_OP_RRQ, TT.remote_file, 1);  in file_get()
280   ret = write_server(sd, packet, len, &server);  in file_get()
291       nbytesrecvd = read_server(sd, packet, TFTP_IOBUFSIZE, &from);  in file_get()
312           len = mkpkt_err(packet, TFTP_ER_UNKID, TFTP_ES_UNKID);  in file_get()
313           ret = write_server(sd, packet, len, &from);  in file_get()
321         if (check_data(packet, &opcode, &rblockno) != 0  in file_get()
334           len = mkpkt_ack(packet, 0);  in file_get()
335           ret = write_server(sd, packet, len, &from);  in file_get()
342           len = mkpkt_err(packet, TFTP_ER_ILLEGALOP, TFTP_ES_ILLEGALOP);  in file_get()
343           ret = write_server(sd, packet, len, &from);  in file_get()
362     if (writeall(fd, packet + TFTP_DATAHEADERSIZE, ndatabytes) < 0){  in file_get()
366     len = mkpkt_ack(packet, blockno);  in file_get()
367     ret = write_server(sd, packet, len, &server);  in file_get()
377   free(packet);  in file_get()
385   uint8_t *packet;  in file_put()  local
391   packet = (uint8_t*)xzalloc(TFTP_IOBUFSIZE);  in file_put()
395     packetlen = mkpkt_request(packet, TFTP_OP_WRQ, TT.remote_file, 1);  in file_put()
396     ret = write_server(sd, packet, packetlen, &server);  in file_put()
398     if (read_ack(sd, packet, &server, &port, NULL) == 0) break;  in file_put()
405     packetlen = mkpkt_data(fd, offset, packet, blockno);  in file_put()
408     ret = write_server(sd, packet, packetlen, &server);  in file_put()
411     if (read_ack(sd, packet, &server, &port, &rblockno) == 0) {  in file_put()
428   free(packet);  in file_put()