1 files changed, 135 insertions, 0 deletions
diff --git a/client.c b/client.c
new file mode 100644
index 0000000..161284b
--- /dev/null
+++ b/client.c
@@ -0,0 +1,135 @@
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <fcntl.h>
+#include <libgen.h>
+#include <netdb.h>
+#include <netinet/in.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/sendfile.h>
+#include <sys/socket.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include "utils.h"
+
+const char *progname = NULL;
+char *port = "1234";
+
+static void
+usage ()
+{
+  printf ("%s: send file to remote host\n", progname);
+  printf ("Usage: %s host[:port] file\n", progname);
+  printf ("Default port is %s\n", port);
+}
+
+static void
+send_file (int fd, const char *filename)
+{
+  off_t dummy = 0;              /* specially for Solaris (it crashes if sendfile's 3rd arg is NULL).  */
+  int sfd = open (filename, O_RDONLY);
+  if (sfd < 0)
+    {
+      fatal ("cannot read `%s'", filename);
+    }
+
+  struct stat st;
+  if (!fstat (sfd, &st))
+    {
+      ssize_t rc;
+      info ("sending `%s'", filename);
+      const char *name = basename ((char *) filename);
+      size_t filename_len = strlen (name) + 1;
+      rc = write (fd, name, filename_len);      /* filename\0payload  */
+      if (rc != filename_len)
+        {
+          fatal ("failed to write filename");
+        }
+      rc = sendfile (fd, sfd, &dummy, st.st_size);
+      if (rc < 0)
+        {
+          fatal ("failed to send file `%s'", filename);
+        }
+      else if (rc != st.st_size)
+        {
+          warning ("sent only %d of %d bytes of file `%s'", rc,
+                   st.st_size, filename);
+        }
+      else
+        {
+          info ("sent %d bytes of `%s'", rc, filename);
+        }
+    }
+  else
+    {
+      fatal ("failed to stat `%s'", filename);
+    }
+
+  (void) close (sfd);
+}
+
+int
+main (int argc, char **argv)
+{
+  const char *host = NULL;
+  char *colon = NULL;
+  ssize_t rc;
+  int fd;
+  struct addrinfo hints;
+  struct addrinfo *result;
+  struct addrinfo *rp = NULL;
+
+  progname = argv[0];
+  if (argc != 3)
+    {
+      usage ();
+      exit (EXIT_FAILURE);
+    }
+
+  host = argv[1];
+  colon = strchr (argv[1], ':');
+  if (colon)
+    {
+      *colon = '\0';
+      port = colon + 1;
+    }
+
+  info ("connecting to host %s, port %s", host, port);
+
+  memset (&hints, 0, sizeof (hints));
+  hints.ai_family = AF_UNSPEC;
+  hints.ai_socktype = SOCK_STREAM;
+
+  rc = getaddrinfo (host, port, &hints, &result);
+  if (0 != rc)
+    {
+      fatal ("getaddrinfo() failed");
+    }
+  for (rp = result; rp != NULL; rp = rp->ai_next)
+    {
+      fd = socket (rp->ai_family, rp->ai_socktype, rp->ai_protocol);
+      if (fd == -1)
+        continue;
+
+      if (!connect (fd, rp->ai_addr, rp->ai_addrlen))
+        break;
+
+      (void) close (fd);
+    }
+  freeaddrinfo (result);
+
+  if (rp == NULL)
+    {
+      fatal ("failed to connect");
+    }
+
+  send_file (fd, argv[2]);
+
+  return EXIT_SUCCESS;
+}