53 static int tftp_session_allocate(struct tftp_t *tp)  in tftp_session_allocate()  argument
73   memcpy(&spt->client_ip, &tp->ip.ip_src, sizeof(spt->client_ip));  in tftp_session_allocate()
74   spt->client_port = tp->udp.uh_sport;  in tftp_session_allocate()
81 static int tftp_session_find(struct tftp_t *tp)  in tftp_session_find()  argument
90       if (!memcmp(&spt->client_ip, &tp->ip.ip_src, sizeof(spt->client_ip))) {  in tftp_session_find()
91 	if (spt->client_port == tp->udp.uh_sport) {  in tftp_session_find()
137     struct tftp_t *tp;  in tftp_send_oack()  local
148     tp = (void *)m->m_data;  in tftp_send_oack()
151     tp->tp_op = htons(TFTP_OACK);  in tftp_send_oack()
152     n += snprintf((char *)tp->x.tp_buf + n, sizeof(tp->x.tp_buf) - n, "%s",  in tftp_send_oack()
154     n += snprintf((char *)tp->x.tp_buf + n, sizeof(tp->x.tp_buf) - n, "%u",  in tftp_send_oack()
178   struct tftp_t *tp;  in tftp_send_error()  local
190   tp = (void *)m->m_data;  in tftp_send_error()
193   tp->tp_op = htons(TFTP_ERROR);  in tftp_send_error()
194   tp->x.tp_error.tp_error_code = htons(errorcode);  in tftp_send_error()
195   pstrcpy((char *)tp->x.tp_error.tp_msg, sizeof(tp->x.tp_error.tp_msg), msg);  in tftp_send_error()
221   struct tftp_t *tp;  in tftp_send_data()  local
237   tp = (void *)m->m_data;  in tftp_send_data()
240   tp->tp_op = htons(TFTP_DATA);  in tftp_send_data()
241   tp->x.tp_data.tp_block_nr = htons(block_nr);  in tftp_send_data()
249   nobytes = tftp_read_data(spt, block_nr - 1, tp->x.tp_data.tp_buf, 512);  in tftp_send_data()
256     tftp_send_error(spt, 1, "File not found", tp);  in tftp_send_data()
276 static void tftp_handle_rrq(struct tftp_t *tp, int pktlen)  in tftp_handle_rrq()  argument
282   s = tftp_session_allocate(tp);  in tftp_handle_rrq()
290   src = tp->x.tp_buf;  in tftp_handle_rrq()
292   n = pktlen - ((uint8_t *)&tp->x.tp_buf[0] - (uint8_t *)tp);  in tftp_handle_rrq()
321       tftp_send_error(spt, 4, "Unsupported transfer mode", tp);  in tftp_handle_rrq()
332       tftp_send_error(spt, 2, "Access violation", tp);  in tftp_handle_rrq()
339       tftp_send_error(spt, 2, "Access violation", tp);  in tftp_handle_rrq()
346       tftp_send_error(spt, 1, "File not found", tp);  in tftp_handle_rrq()
351       tftp_send_error(spt, 2, "Access violation", tp);  in tftp_handle_rrq()
362 	  tftp_send_error(spt, 2, "Access violation", tp);  in tftp_handle_rrq()
383 		  tftp_send_error(spt, 1, "File not found", tp);  in tftp_handle_rrq()
388 	  tftp_send_oack(spt, "tsize", tsize, tp);  in tftp_handle_rrq()
392   tftp_send_data(spt, 1, tp);  in tftp_handle_rrq()
395 static void tftp_handle_ack(struct tftp_t *tp, int pktlen)  in tftp_handle_ack()  argument
399   s = tftp_session_find(tp);  in tftp_handle_ack()
406 		     ntohs(tp->x.tp_data.tp_block_nr) + 1,  in tftp_handle_ack()
407 		     tp) < 0) {  in tftp_handle_ack()
414   struct tftp_t *tp = (struct tftp_t *)m->m_data;  in tftp_input()  local
416   switch(ntohs(tp->tp_op)) {  in tftp_input()
418     tftp_handle_rrq(tp, m->m_len);  in tftp_input()
422     tftp_handle_ack(tp, m->m_len);  in tftp_input()