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#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/socket.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
#ifdef HAVE_SYS_SENDFILE_H
#include <sys/sendfile.h>
#endif
#include "utils.h"
const char *progname = NULL;
const 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 ssize_t
transmit (int fd, int sfd, size_t size)
{
#if HAVE_SENDFILE
#if HAVE_STRUCT_SF_HDTR_HDR_CNT
int rc;
off_t sbytes;
rc = sendfile (sfd, fd, 0, size, (struct sf_hdtr *) NULL, &sbytes, 0);
if (rc < 0)
return rc;
return sbytes;
#else
int rc;
off_t dummy = 0; /* specially for Solaris (it crashes if sendfile's 3rd arg is NULL). */
rc = sendfile (fd, sfd, &dummy, size);
return rc;
#endif
#else /* no HAVE_SENDFILE */
#error need sendfile()
#endif
}
static void
send_file (int fd, const char *filename)
{
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);
ssize_t filename_len = strlen (name) + 1;
rc = write (fd, name, filename_len); /* filename\0payload */
if (rc != filename_len)
fatal ("failed to write filename");
rc = transmit (fd, sfd, 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;
}
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