From c5fcf7179a83ef65c86c6a4a390029149e518649 Mon Sep 17 00:00:00 2001
From: Franciszek Malinka <franciszek.malinka@gmail.com>
Date: Tue, 5 Oct 2021 21:49:54 +0200
Subject: Duzy commit ze smieciami

---
 Semestr 4/sieci/pracownia3/transport.c | 149 ---------------------------------
 1 file changed, 149 deletions(-)
 delete mode 100644 Semestr 4/sieci/pracownia3/transport.c

(limited to 'Semestr 4/sieci/pracownia3/transport.c')

diff --git a/Semestr 4/sieci/pracownia3/transport.c b/Semestr 4/sieci/pracownia3/transport.c
deleted file mode 100644
index 9226d69..0000000
--- a/Semestr 4/sieci/pracownia3/transport.c	
+++ /dev/null
@@ -1,149 +0,0 @@
-/* Projekt: Transport
- * Autor: Franciszek Malinka 316093
- */
-
-#include <netinet/ip.h>
-#include <arpa/inet.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <errno.h>
-#include <stdbool.h>
-#include "config.h"
-#include "window.h"
-#include "utils.h"
-
-size_t send_datagram(int sockfd, struct sockaddr_in server_address, char *buffer, size_t buffer_len) {
-  return sendto(sockfd, buffer, buffer_len, 0, (struct sockaddr*) &server_address, sizeof(server_address));
-}
-
-void send_data_request(int sockfd, struct sockaddr_in server_address, size_t pos, size_t bytes) {
-  char buffer[40];
-  sprintf(buffer, "GET %ld %ld\n", pos, bytes);
-  size_t buffer_len = strlen(buffer);
-  if (send_datagram(sockfd, server_address, buffer, buffer_len) != buffer_len) {
-    fprintf(stderr, "sendto error: %s\n", strerror(errno));
-    exit(EXIT_FAILURE);
-  }
-}
-
-size_t recv_message(int sockfd, char *buffer, struct sockaddr_in *sender) {
-  socklen_t sender_len = sizeof(*sender);
-  bzero(buffer, HEADER_LEN + DATAGRAM_LEN);
-  bzero(sender, sizeof(*sender));
-  size_t datagram_len = recvfrom(sockfd, buffer, IP_MAXPACKET, 0,
-    (struct sockaddr*)sender, &sender_len);
-
-  if (datagram_len < 0) {
-    fprintf(stderr, "recvfrom error: %s\n", strerror(errno));
-    exit(EXIT_FAILURE);
-  }
-  
-  return datagram_len;
-}
-
-void request_data(int sockfd, struct sockaddr_in server_address, window_t *w, size_t bytes_writen, size_t remaining_bytes) {
-  int pos = w->first_pos;
-  for (int i = 0; i < w->size && i*DATAGRAM_LEN < remaining_bytes; i++) {
-    if (w->uptodate[pos] == false) {
-      size_t bytes_to_request = min(DATAGRAM_LEN, remaining_bytes - i*DATAGRAM_LEN);
-      send_data_request(sockfd, server_address, bytes_writen + i*DATAGRAM_LEN, bytes_to_request);
-    }
-    pos = (pos + 1) % w->size;
-  }
-}
-
-void update_file(FILE *fd, window_t *w, size_t *bytes_writen, size_t *remaining_bytes) {
-  while (w->uptodate[w->first_pos] && *remaining_bytes > 0) {
-    // printf("Writing %ld\n", *bytes_writen);
-    size_t bytes_to_write = min(DATAGRAM_LEN, *remaining_bytes);
-    fwrite(w->ar[w->first_pos], sizeof(char), bytes_to_write, fd);  
-    *bytes_writen += bytes_to_write;
-    *remaining_bytes -= bytes_to_write;
-    shift(w);
-  } 
-}
-
-size_t recv_datagram(int sockfd, char *buffer, struct sockaddr_in server_address) {
-  struct sockaddr_in sender;
-  
-  size_t received_bytes = recv_message(sockfd, buffer, &sender);
-  if (sender.sin_addr.s_addr != server_address.sin_addr.s_addr || sender.sin_port != server_address.sin_port) {
-    printf("Smieci!\n");
-    return 0;
-  }
-  return received_bytes;  
-}
-
-
-void receive_file(int sockfd, struct sockaddr_in server_address, const char *file_name, size_t remaining_bytes) {
-  FILE *fd = fopen(file_name, "w");
-  if (!fd) {
-    fprintf(stderr, "fopen error: %s\n", strerror(errno));
-    exit(EXIT_FAILURE);
-  }
-  size_t bytes_writen = 0;
-  
-  size_t recv_pos, recv_len;
-  char buffer[DATAGRAM_LEN + HEADER_LEN];
-  int prev_len = 0;
-  window_t w;
-  init_window(&w, WINDOW_SIZE, DATAGRAM_LEN);
-  
-  while (remaining_bytes) {
-    request_data(sockfd, server_address, &w, bytes_writen, remaining_bytes);
-    int timeout = TIMEOUT;
-    while (poll_socket_modify_timeout(sockfd, &timeout)) {
-      size_t received_bytes = recv_datagram(sockfd, buffer, server_address);
-      if (received_bytes == 0) continue;
-      sscanf(buffer, "DATA %ld %ld\n", &recv_pos, &recv_len);
-      if (recv_pos < bytes_writen) continue;
-      
-      int pos = (recv_pos - bytes_writen) / DATAGRAM_LEN;
-      pos = (pos + w.first_pos) % w.size;
-      if (!w.uptodate[pos]) {
-        for (int i = 0; i < recv_len; i++) {
-          w.ar[pos][i] = buffer[i + received_bytes - recv_len];
-        }
-        w.uptodate[pos] = true;
-      }
-      update_file(fd, &w, &bytes_writen, &remaining_bytes);
-    }
-
-    if (prev_len != bytes_writen) {
-      prev_len = bytes_writen;
-      printf("%.3f%%\n", 100.0 * (float)(bytes_writen) / (float)(remaining_bytes+bytes_writen));
-    }
-  }
-  destroy_window(&w);
-  fclose(fd);
-}
-
-int main(int argc, char *argv[]) {
-  if (argc != 5) {
-    printf("Usage:\n\t%s [server ip] [server port] [output file name] [file size]\n", argv[0]);
-    return -1;
-  }
-
-  int sockfd = get_socket();
-  struct sockaddr_in server_address;
-  bzero(&server_address, sizeof(server_address));
-  server_address.sin_family = AF_INET;
-  if (!inet_pton(AF_INET, argv[1], &server_address.sin_addr)) {
-    fprintf(stderr, "Invalid ip address: %s\n", argv[1]);
-    return -1;
-  }
-  server_address.sin_port = htons(atoi(argv[2]));
-  if (server_address.sin_port == 0) {
-    fprintf(stderr, "Invalid port: %s\n", argv[2]);
-    return -1;
-  }
-
-  size_t file_len = atoi(argv[4]);
-  if (file_len == 0) {
-    printf("File len is 0, nothing to do here.\n");
-    return 0;
-  }
-
-  receive_file(sockfd, server_address, argv[3], file_len);
-}
\ No newline at end of file
-- 
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