1 files changed, 344 insertions, 0 deletions
diff --git a/app_example/func-test/file_transfer/server_filetrans.c b/app_example/func-test/file_transfer/server_filetrans.c
new file mode 100644
index 0000000..9463c70
--- /dev/null
+++ b/app_example/func-test/file_transfer/server_filetrans.c
@@ -0,0 +1,344 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <netinet/in.h>
+#include <netdb.h>
+#include <ctype.h>
+#include <arpa/inet.h>
+#include <fcntl.h>
+char *END_FLAG = "=================END";
+#define HEXCONVERT_COLS 8
+#define HEX_CONVERT 1
+//#define DEBUG 1
+#define out(fmt, arg...) (void)printf(fmt, ##arg)
+
+#ifdef DEBUG
+#define DBG(fmt, arg...) do { \
+                out("[Debug] " fmt, ##arg); \
+ } while (0)
+#else
+#define DBG(fmt, arg...) ((void)0)
+#endif
+
+void
+error (const char *msg)
+{
+  perror (msg);
+  out ("./server_tcp [server_ip_address] [port number]\n");
+  exit (1);
+}
+
+#if defined(HEX_CONVERT) && defined(DEBUG)
+void
+hexconvert (void *mem, unsigned int len)
+{
+  unsigned int i;
+
+  for (i = 0;
+       i <
+       len +
+       ((len % HEXCONVERT_COLS) ? (HEXCONVERT_COLS -
+                                   len % HEXCONVERT_COLS) : 0); i++)
+    {
+      /* print offset */
+      if (i % HEXCONVERT_COLS == 0)
+        {
+          DBG ("\n0x%06x: ", i);
+        }
+
+      /*print hex data */
+      if (i < len)
+        {
+          DBG ("%02x ", 0xFF & ((char *) mem)[i]);
+        }
+      else                      /* end of block, just aligning for ASCII dump */
+        {
+          DBG ("\n");
+        }
+    }
+}
+#endif
+int
+compareFiles (FILE * fp1, FILE * fp2)
+{
+
+  char ch1 = getc (fp1);
+  char ch2 = getc (fp2);
+  int error = 0, pos = 0, line = 1;
+
+  while (ch1 != EOF && ch2 != EOF)
+    {
+      pos++;
+      if (ch1 == '\n' && ch2 == '\n')
+        {
+          line++;
+          pos = 0;
+        }
+
+      if (ch1 != ch2)
+        {
+          error++;
+          DBG ("Line Number : %d \tError" " Position :%d \n", line, pos);
+        }
+
+      ch1 = getc (fp1);
+      ch2 = getc (fp2);
+    }
+
+  //printf("Total Errors : %d\t", error);
+  return error;
+}
+
+void
+tcp (char **pArgv)
+{
+
+  int sockfd, newsockfd, portno;
+  char buff[1024], filename[255];
+
+  struct sockaddr_in serv_addr, cli_addr;
+  socklen_t clilen;
+
+  sockfd = socket (AF_INET, SOCK_STREAM, 0);
+  if (sockfd < 0)
+    {
+      error ("error in socket creation");
+    }
+  out ("socket create successful\n");
+
+  bzero ((char *) &serv_addr, sizeof (serv_addr));
+  portno = atoi (pArgv[2]);
+
+  serv_addr.sin_family = AF_INET;
+  serv_addr.sin_addr.s_addr = inet_addr (pArgv[1]);
+  serv_addr.sin_port = htons (portno);
+
+  if (bind (sockfd, (struct sockaddr *) &serv_addr, sizeof (serv_addr)) < 0)
+    {
+      error ("bind fail");
+    }
+  out ("Bind successful\n");
+  listen (sockfd, 5);
+  clilen = sizeof (cli_addr);
+
+  newsockfd = accept (sockfd, (struct sockaddr *) &cli_addr, &clilen);
+  if (newsockfd < 0)
+    {
+      error ("error in accept");
+    }
+  out ("socket accept succesful\n");
+  bzero (buff, 1024);
+
+  FILE *fp;
+  int lSize = 0, totallSize = 0;
+
+  bzero (filename, 255);
+
+  fclose (fopen ("receive_file.txt", "w"));
+  if (system ("chmod +x *") == -1)
+    {
+      out (" incorrect use of system\n");
+    }
+  fp = fopen ("receive_file.txt", "a");
+
+  if (read (newsockfd, &lSize, sizeof (int)) == -1)
+    {
+      out ("error executing read\n");
+    }
+  if (read (newsockfd, filename, sizeof (filename)) == -1)
+    {
+      out ("error executing read\n");
+    }
+
+  while (lSize > totallSize)
+    {
+      int bytes_read = 0;
+      bzero (buff, 1024);
+
+      bytes_read = read (newsockfd, buff, 1024);
+
+      if (bytes_read == 0)
+        {
+          break;
+        }
+
+      if (bytes_read < 0)
+        {
+          error ("error in Socket read.\n");
+        }
+
+#if defined(HEX_CONVERT) && defined(DEBUG)
+      DBG ("=========================================\n");
+      hexconvert (buff, bytes_read);
+      DBG ("=========================================\n");
+#endif
+#ifdef DEBUG
+      DBG ("=========================================\n");
+      puts ((const char *) buff);
+      DBG ("=========================================\n");
+#endif
+      totallSize += bytes_read;
+
+      if (fwrite (buff, 1, bytes_read, fp) == -1)
+        {
+          error ("error in file write\n");
+        }
+//#if DEBUG
+      DBG
+        ("Total size of file = %d, Total Bytes sent to socket = %d, bytes_read in each step = %d\n",
+         lSize, totallSize, bytes_read);
+//#endif
+    }
+  out ("file name = %s\n", filename);
+  out ("Final total size of file = %d, total read from socket = %d\n", lSize,
+       totallSize);
+  out ("copy complete\n");
+  fclose (fp);
+
+  FILE *fp1 = fopen ("receive_file.txt", "r");
+  FILE *fp2 = fopen (filename, "r");
+
+  fseek (fp2, 0L, SEEK_END);
+  int lfile_size = ftell (fp2);
+  rewind (fp2);
+  if (lfile_size != lSize)
+    {
+      out ("Size unmatch...\n");
+    }
+  else
+    {
+      out ("Size match...\n");
+    }
+
+  if (compareFiles (fp1, fp2) > 0)
+    {
+      out ("file unmatch...\n");
+    }
+  else
+    {
+      out ("file match...\n");
+    }
+
+  close (newsockfd);
+  close (sockfd);
+  return;
+}
+
+void
+run (int sockfd, struct sockaddr *cliaddr, socklen_t clilen, char *res_buf,
+     int MAXLINE)
+{
+  int n, fd;
+  socklen_t len;
+  char *buf, *buf2;
+  FILE *fp1, *fp2;
+  buf = malloc (MAXLINE + 1);
+  len = clilen;
+  n = recvfrom (sockfd, buf, MAXLINE, 0, cliaddr, &len);
+  buf[n] = 0;
+  out ("Received from client:[%s] \n", buf);
+  buf2 = malloc (MAXLINE);
+  strcpy (buf2, buf);
+  sendto (sockfd, "ok", strlen ("ok"), 0, cliaddr, len);
+  fd = open (buf, O_RDWR | O_CREAT, 0666);
+  while ((n = recvfrom (sockfd, buf, MAXLINE, 0, cliaddr, &len)))
+    {
+      buf[n] = 0;
+      //out("%s", buf);
+      if (!(strcmp (buf, END_FLAG)))
+        {
+          break;
+        }
+      if (write (fd, buf, n) == -1)
+        {
+          out ("error in executing write\n");
+        }
+    }
+  fp1 = fopen (buf2, "r");
+  fp2 = fopen (res_buf, "r");
+
+  if (compareFiles (fp1, fp2) == 0)
+    {
+      out ("\nPass:The contents of the files are same");
+    }
+  else
+    {
+      out ("\nFail:The contents of the files are different");
+    }
+  close (fd);
+}
+
+void
+udp (char **pArgv)
+{
+  int sockfd, portno, MAXLINE;
+  struct sockaddr_in servaddr, cliaddr;
+  char *res_buf;
+  res_buf = pArgv[3];
+
+  portno = atoi (pArgv[2]);
+  MAXLINE = atoi (pArgv[4]);
+  sockfd = socket (AF_INET, SOCK_DGRAM, 0);
+  if (sockfd < 0)
+    {
+      out ("error in socket creation\n");
+    }
+  out ("socket create successful\n");
+
+  bzero (&servaddr, sizeof (servaddr));
+  servaddr.sin_family = AF_INET;
+  servaddr.sin_addr.s_addr = inet_addr (pArgv[1]);
+  servaddr.sin_port = htons (portno);
+
+  if (bind (sockfd, (struct sockaddr *) &servaddr, sizeof (servaddr)) < 0)
+    {
+      out ("bind fail");
+    }
+  out ("Binded successfully\n");
+  fd_set read_fds;
+  FD_ZERO (&read_fds);
+  FD_SET (sockfd, &read_fds);
+  int fdmax = sockfd;
+  if (FD_ISSET (sockfd, &read_fds))
+    {
+      run (fdmax, (struct sockaddr *) &cliaddr, sizeof (cliaddr), res_buf,
+           MAXLINE);
+    }
+  return;
+}
+
+int
+main (int argc, char *argv[])
+{
+  int i, j;
+  char **pArgv;
+  pArgv = (char **) malloc (sizeof (char *) * 10);
+  for (i = 0; i < 10; i++)
+    {
+      pArgv[i] = (char *) malloc (sizeof (char) * 20);
+    }
+  if (strcmp ("tcp", argv[1]) == 0)
+    {
+      strcpy (pArgv[0], "tcp");
+      /* The arguments of tcp are [server_ip_address] [port number] */
+      for (i = 1; i < 3; i++)
+        {
+          strcpy (pArgv[i], argv[i + 1]);
+        }
+      tcp (pArgv);
+    }
+  else if (strcmp ("udp", argv[1]) == 0)
+    {
+      strcpy (pArgv[0], "udp");
+      /* The arguments of udp are [server_ip_address] [port number] [filename] [MAX_BUFFER_LENGTH] */
+      for (i = 1; i < 5; i++)
+        {
+          strcpy (pArgv[i], argv[i + 1]);
+        }
+      udp (pArgv);
+    }
+
+  return 0;
+}