#include "config.h"
#include <sys/statvfs.h>
#include <stdio.h>
#include <errno.h>
#include <fcntl.h>
#include <stdlib.h>
#include <string.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <libssh/libssh.h>
#include <libssh/sftp.h>
#include "examples_common.h"
#ifdef WITH_SFTP
#ifndef BUF_SIZE
#define BUF_SIZE 65536
#endif
static int verbosity;
static char *destination;
static void do_sftp(ssh_session session) {
sftp_session sftp = sftp_new(session);
sftp_dir dir;
sftp_attributes file;
sftp_statvfs_t sftpstatvfs;
struct statvfs sysstatvfs;
sftp_file fichier;
sftp_file to;
int len = 1;
unsigned int i;
char data[BUF_SIZE] = {0};
char *lnk;
unsigned int count;
if (!sftp) {
fprintf(stderr, "sftp error initialising channel: %s\n",
ssh_get_error(session));
goto end;
}
if (sftp_init(sftp)) {
fprintf(stderr, "error initialising sftp: %s\n",
ssh_get_error(session));
goto end;
}
printf("Additional SFTP extensions provided by the server:\n");
count = sftp_extensions_get_count(sftp);
for (i = 0; i < count; i++) {
printf("\t%s, version: %s\n",
sftp_extensions_get_name(sftp, i),
sftp_extensions_get_data(sftp, i));
}
if (sftp_symlink(sftp, "/tmp/this_is_the_link",
"/tmp/sftp_symlink_test") < 0)
{
fprintf(stderr, "Could not create link (%s)\n",
ssh_get_error(session));
goto end;
}
lnk = sftp_readlink(sftp, "/tmp/sftp_symlink_test");
if (lnk == NULL) {
fprintf(stderr, "Could not read link (%s)\n", ssh_get_error(session));
goto end;
}
printf("readlink /tmp/sftp_symlink_test: %s\n", lnk);
sftp_unlink(sftp, "/tmp/sftp_symlink_test");
if (sftp_extension_supported(sftp, "statvfs@openssh.com", "2")) {
sftpstatvfs = sftp_statvfs(sftp, "/tmp");
if (sftpstatvfs == NULL) {
fprintf(stderr, "statvfs failed (%s)\n", ssh_get_error(session));
goto end;
}
printf("sftp statvfs:\n"
"\tfile system block size: %llu\n"
"\tfundamental fs block size: %llu\n"
"\tnumber of blocks (unit f_frsize): %llu\n"
"\tfree blocks in file system: %llu\n"
"\tfree blocks for non-root: %llu\n"
"\ttotal file inodes: %llu\n"
"\tfree file inodes: %llu\n"
"\tfree file inodes for to non-root: %llu\n"
"\tfile system id: %llu\n"
"\tbit mask of f_flag values: %llu\n"
"\tmaximum filename length: %llu\n",
(unsigned long long) sftpstatvfs->f_bsize,
(unsigned long long) sftpstatvfs->f_frsize,
(unsigned long long) sftpstatvfs->f_blocks,
(unsigned long long) sftpstatvfs->f_bfree,
(unsigned long long) sftpstatvfs->f_bavail,
(unsigned long long) sftpstatvfs->f_files,
(unsigned long long) sftpstatvfs->f_ffree,
(unsigned long long) sftpstatvfs->f_favail,
(unsigned long long) sftpstatvfs->f_fsid,
(unsigned long long) sftpstatvfs->f_flag,
(unsigned long long) sftpstatvfs->f_namemax);
sftp_statvfs_free(sftpstatvfs);
if (statvfs("/tmp", &sysstatvfs) < 0) {
fprintf(stderr, "statvfs failed (%s)\n", strerror(errno));
goto end;
}
printf("sys statvfs:\n"
"\tfile system block size: %llu\n"
"\tfundamental fs block size: %llu\n"
"\tnumber of blocks (unit f_frsize): %llu\n"
"\tfree blocks in file system: %llu\n"
"\tfree blocks for non-root: %llu\n"
"\ttotal file inodes: %llu\n"
"\tfree file inodes: %llu\n"
"\tfree file inodes for to non-root: %llu\n"
"\tfile system id: %llu\n"
"\tbit mask of f_flag values: %llu\n"
"\tmaximum filename length: %llu\n",
(unsigned long long) sysstatvfs.f_bsize,
(unsigned long long) sysstatvfs.f_frsize,
(unsigned long long) sysstatvfs.f_blocks,
(unsigned long long) sysstatvfs.f_bfree,
(unsigned long long) sysstatvfs.f_bavail,
(unsigned long long) sysstatvfs.f_files,
(unsigned long long) sysstatvfs.f_ffree,
(unsigned long long) sysstatvfs.f_favail,
(unsigned long long) sysstatvfs.f_fsid,
(unsigned long long) sysstatvfs.f_flag,
(unsigned long long) sysstatvfs.f_namemax);
}
dir = sftp_opendir(sftp, "./");
if (!dir) {
fprintf(stderr, "Directory not opened(%s)\n", ssh_get_error(session));
goto end;
}
while ((file = sftp_readdir(sftp, dir))) {
fprintf(stderr, "%30s(%.8o) : %s(%.5d) %s(%.5d) : %.10llu bytes\n",
file->name,
file->permissions,
file->owner,
file->uid,
file->group,
file->gid,
(long long unsigned int) file->size);
sftp_attributes_free(file);
}
if (!sftp_dir_eof(dir)) {
fprintf(stderr, "Error: %s\n", ssh_get_error(session));
goto end;
}
if (sftp_closedir(dir)) {
fprintf(stderr, "Error: %s\n", ssh_get_error(session));
goto end;
}
fichier = sftp_open(sftp, "/usr/bin/ssh", O_RDONLY, 0);
if (!fichier) {
fprintf(stderr, "Error opening /usr/bin/ssh: %s\n",
ssh_get_error(session));
goto end;
}
to = sftp_open(sftp, "ssh-copy", O_WRONLY | O_CREAT, 0700);
if (!to) {
fprintf(stderr, "Error opening ssh-copy for writing: %s\n",
ssh_get_error(session));
sftp_close(fichier);
goto end;
}
while ((len = sftp_read(fichier, data, 4096)) > 0) {
if (sftp_write(to, data, len) != len) {
fprintf(stderr, "Error writing %d bytes: %s\n",
len, ssh_get_error(session));
sftp_close(to);
sftp_close(fichier);
goto end;
}
}
printf("finished\n");
if (len < 0) {
fprintf(stderr, "Error reading file: %s\n", ssh_get_error(session));
}
sftp_close(fichier);
sftp_close(to);
printf("fichiers ferm\n");
to = sftp_open(sftp, "/tmp/grosfichier", O_WRONLY|O_CREAT, 0644);
for (i = 0; i < 1000; ++i) {
len = sftp_write(to, data, sizeof(data));
printf("wrote %d bytes\n", len);
if (len != sizeof(data)) {
printf("chunk %d : %d (%s)\n", i, len, ssh_get_error(session));
}
}
sftp_close(to);
end:
sftp_free(sftp);
printf("sftp session terminated\n");
}
static void usage(const char *argv0) {
fprintf(stderr, "Usage : %s [-v] remotehost\n"
"sample sftp test client - libssh-%s\n"
"Options :\n"
" -v : increase log verbosity\n",
argv0,
ssh_version(0));
exit(0);
}
static int opts(int argc, char **argv) {
int i;
while ((i = getopt(argc, argv, "v")) != -1) {
switch(i) {
case 'v':
verbosity++;
break;
default:
fprintf(stderr, "unknown option %c\n", optopt);
usage(argv[0]);
return -1;
}
}
destination = argv[optind];
if (destination == NULL) {
usage(argv[0]);
return -1;
}
return 0;
}
int main(int argc, char **argv) {
ssh_session session;
if (opts(argc, argv) < 0) {
return EXIT_FAILURE;
}
session = connect_ssh(destination, NULL, verbosity);
if (session == NULL) {
return EXIT_FAILURE;
}
do_sftp(session);
ssh_disconnect(session);
ssh_free(session);
return 0;
}
#endif