static int sec_prot_internal(int level)
{
char *p;
unsigned int s = 1048576;
ftp_set_tmp_verbosity(vbError);
if (!ftp->sec_complete) {
ftp_err(_("No security data exchange has taken place.\n"));
return -1;
}
if (level) {
ftp_cmd("PBSZ %u", s);
if (ftp->code != ctComplete) {
ftp_err(_("Failed to set protection buffer size.\n"));
return -1;
}
ftp->buffer_size = s;
p = strstr(ftp->reply, "PBSZ=");
if (p)
sscanf(p, "PBSZ=%u", &s);
if (s < ftp->buffer_size)
ftp->buffer_size = s;
}
ftp_cmd("PROT %c", level["CSEP"]); /* XXX :-) */
if (ftp->code != ctComplete) {
ftp_err(_("Failed to set protection level.\n"));
return -1;
}
ftp->data_prot = (enum protection_level)level;
url_setprotlevel(ftp->url, level_to_name(ftp->data_prot));
return 0;
}
int ssh_chdir(const char *path)
{
Attrib *aa;
char *p = ftp_path_absolute(path);
bool isdir = false;
/* First check if this file is cached and is a directory, else we
* need to stat the file to see if it really is a directory
*/
stripslash(p);
isdir = (ftp_cache_get_directory(p) != 0);
if(!isdir) {
rfile *rf = ftp_cache_get_file(p);
isdir = (rf && risdir(rf));
}
if(!isdir) {
if ((aa = ssh_stat(p)) == 0) {
free(p);
return -1;
}
if (!(aa->flags & SSH2_FILEXFER_ATTR_PERMISSIONS)) {
ftp_err("Can't change directory: Can't check target");
free(p);
return -1;
}
if (!S_ISDIR(aa->perm)) {
ftp_err("%s: not a directory\n", p);
free(p);
return -1;
}
}
ftp_update_curdir_x(p);
return 0;
}
listitem *ftplist_search(const char *str)
{
if(isdigit((int)str[0]) && strchr(str, '.') == 0) {
listitem *li;
int i = 1;
int n = atoi(str);
if(n <= 0 || n > list_numitem(gvFtpList)) {
ftp_err(_("invalid connection number: '%d'\n"), n);
return 0;
}
for(li=gvFtpList->first; li; li=li->next, i++) {
if(i == n)
return li;
}
} else {
listitem *li = list_search(gvFtpList,
(listsearchfunc)switch_search, str);
if(li)
return li;
else
ftp_err(_("no such connection open: '%s'\n"), str);
}
return 0;
}
int ssh_unlink(const char *path)
{
int rc = sftp_unlink(ftp->sftp_session, path);
if (rc != SSH_OK && sftp_get_error(ftp->sftp_session) != SSH_FX_NO_SUCH_FILE)
{
ftp_err(_("Couldn't delete file: %s\n"), ssh_get_error(ftp->session));
ftp->code = ctError;
ftp->fullcode = 500;
return -1;
}
else
ftp_cache_flush_mark_for(path);
return 0;
}
int ssh_mkdir_verb(const char *path, verbose_t verb)
{
char* abspath = ftp_path_absolute(path);
stripslash(abspath);
int rc = sftp_mkdir(ftp->sftp_session, abspath, S_IRWXU);
if (rc != SSH_OK && sftp_get_error(ftp->sftp_session) != SSH_FX_FILE_ALREADY_EXISTS)
{
ftp_err(_("Couldn't create directory: %s\n"), ssh_get_error(ftp->session));
free(abspath);
return rc;
}
ftp_cache_flush_mark_for(abspath);
free(abspath);
return 0;
}
int ftp_list(const char *cmd, const char *param, FILE *fp)
{
if (!cmd || !fp || !ftp_connected())
return -1;
#ifdef HAVE_LIBSSH
if (ftp->session)
return ssh_list(cmd, param, fp);
#endif
reset_transfer_info();
foo_hookf = NULL;
#if 0 /* don't care about transfer type, binary should work well... */
ftp_type(tmAscii);
#endif
if (ftp_init_transfer() != 0) {
ftp_err(_("transfer initialization failed"));
return -1;
}
ftp_set_tmp_verbosity(vbNone);
if (param)
ftp_cmd("%s %s", cmd, param);
else
ftp_cmd("%s", cmd);
if (ftp->code != ctPrelim)
return -1;
if (!sock_accept(ftp->data, "r", ftp_is_passive())) {
perror("accept()");
return -1;
}
if (FILE_recv_ascii(ftp->data, fp) != 0)
return -1;
sock_destroy(ftp->data);
ftp->data = NULL;
ftp_read_reply();
return ftp->code == ctComplete ? 0 : -1;
}
int ssh_rmdir(const char *path)
{
char* abspath = ftp_path_absolute(path);
stripslash(abspath);
int rc = sftp_rmdir(ftp->sftp_session, abspath);
if (rc != SSH_OK && sftp_get_error(ftp->sftp_session) != SSH_FX_NO_SUCH_FILE)
{
ftp_err(_("Couldn't remove directory: %s\n"), ssh_get_error(ftp->session));
free(abspath);
return rc;
}
ftp_cache_flush_mark(abspath);
ftp_cache_flush_mark_for(abspath);
free(abspath);
return 0;
}
int ftp_chmod(const char *path, const char *mode)
{
#ifdef HAVE_LIBSSH
if(ftp->session)
return ssh_chmod(path, mode);
#endif
if(ftp->has_site_chmod_command) {
ftp_set_tmp_verbosity(vbNone);
ftp_cmd("SITE CHMOD %s %s", mode, path);
if(ftp->fullcode == 502)
ftp->has_site_chmod_command = false;
if(ftp->code == ctComplete) {
ftp_cache_flush_mark_for(path);
return 0;
}
} else
ftp_err(_("Server doesn't support SITE CHMOD\n"));
return -1;
}
static int
krb4_decode(void *app_data, void *buf, int len, int level)
{
MSG_DAT m;
int e;
struct krb4_data *d = app_data;
if(level == prot_safe)
e = krb_rd_safe(buf, len, &d->key,
(struct sockaddr_in *)REMOTE_ADDR,
(struct sockaddr_in *)LOCAL_ADDR, &m);
else
e = krb_rd_priv(buf, len, d->schedule, &d->key,
(struct sockaddr_in *)REMOTE_ADDR,
(struct sockaddr_in *)LOCAL_ADDR, &m);
if(e){
ftp_err("krb4_decode: %s", krb_get_err_text(e));
return -1;
}
memmove(buf, m.app_data, m.app_length);
return m.app_length;
}
int ftp_idle(const char *idletime)
{
#ifdef HAVE_LIBSSH
if(ftp->session)
return ssh_idle(idletime);
#endif
if(!ftp->has_site_idle_command) {
ftp_err(_("Server doesn't support SITE IDLE\n"));
return -1;
}
ftp_set_tmp_verbosity(vbCommand);
if(idletime)
ftp_cmd("SITE IDLE %s", idletime);
else
ftp_cmd("SITE IDLE");
if(ftp->fullcode == 502)
ftp->has_site_idle_command = false;
return ftp->code == ctComplete ? 0 : -1;
}
int ssh_rename(const char *oldname, const char *newname)
{
char* on = ftp_path_absolute(oldname);
char* nn = ftp_path_absolute(newname);
stripslash(on);
stripslash(nn);
int rc = sftp_rename(ftp->sftp_session, on, nn);
if (rc != SSH_OK)
{
ftp_err(_("Couldn't rename file '%s' to '%s': %s\n"),
on, nn, ssh_get_error(ftp->session));
free(on);
free(nn);
return -1;
}
ftp_cache_flush_mark_for(on);
ftp_cache_flush_mark_for(nn);
free(on);
free(nn);
return 0;
}
int ssh_rmdir(const char *path)
{
char *p;
u_int status, id;
p = ftp_path_absolute(path);
stripslash(p);
id = ftp->ssh_id++;
ssh_send_string_request(id, SSH2_FXP_RMDIR, p, strlen(p));
status = ssh_get_status(id);
if(status != SSH2_FX_OK) {
ftp_err("Couldn't remove directory: %s\n", fx2txt(status));
free(p);
return -1;
}
ftp_cache_flush_mark(p);
ftp_cache_flush_mark_for(p);
free(p);
return 0;
}
int ssh_rename(const char *oldname, const char *newname)
{
Buffer msg;
u_int status, id;
char *on, *nn;
buffer_init(&msg);
on = ftp_path_absolute(oldname);
nn = ftp_path_absolute(newname);
stripslash(on);
stripslash(nn);
/* Send rename request */
id = ftp->ssh_id++;
buffer_put_char(&msg, SSH2_FXP_RENAME);
buffer_put_int(&msg, id);
buffer_put_cstring(&msg, on);
buffer_put_cstring(&msg, nn);
ssh_cmd( &msg);
buffer_free(&msg);
status = ssh_get_status(id);
if(status != SSH2_FX_OK) {
ftp_err("Couldn't rename file \"%s\" to \"%s\": %s\n",
on, nn, fx2txt(status));
free(on);
free(nn);
return -1;
}
ftp_cache_flush_mark_for(on);
ftp_cache_flush_mark_for(nn);
free(on);
free(nn);
return 0;
}
int transfer_init_nohup(const char *str)
{
if(!str)
asprintf(&nohup_logfile, "%s/nohup/nohup.%u",
gvWorkingDirectory, getpid());
else
nohup_logfile = tilde_expand_home(str, gvLocalHomeDir);
if(logfp)
fclose(logfp);
logfp = fopen(nohup_logfile, "w");
if(!logfp) {
perror(nohup_logfile);
free(nohup_logfile);
logfp = 0;
return -1;
}
ftp_err(_("Redirecting output to %s\n"), nohup_logfile);
setbuf(logfp, 0); /* change buffering */
return 0;
}
/* store a local file on remote server */
void cmd_put(int argc, char **argv)
{
int c, opt=PUT_VERBOSE;
list *gl;
char *put_output = 0;
char *logfile = 0;
pid_t pid;
#ifdef HAVE_REGEX
int ret;
char put_rx_errbuf[129];
#endif
struct option longopts[] = {
{"append", no_argument, 0, 'a'},
{"delete-after", no_argument, 0, 'D'},
{"dir-mask", required_argument, 0, '3'},
#ifdef HAVE_REGEX
{"dir-rx-mask", required_argument, 0, '4'},
#endif
{"skip-empty", no_argument, 0, 'e'},
{"force", no_argument, 0, 'f'},
{"nohup", no_argument, 0, 'H'},
{"interactive", no_argument, 0, 'i'},
{"logfile", required_argument, 0, 'L'},
{"mask", required_argument, 0, 'm'},
#ifdef HAVE_REGEX
{"rx-mask", required_argument, 0, 'M'},
#endif
{"newer", no_argument, 0, 'n'},
{"output", required_argument, 0, 'o'},
{"preserve", no_argument, 0, 'p'},
{"parents", no_argument, 0, 'P'},
{"quiet", no_argument, 0, 'q'},
{"recursive", no_argument, 0, 'r'},
{"resume", no_argument, 0, 'R'},
{"skip-existing", no_argument, 0, 's'},
{"tagged", no_argument, 0, 't'},
{"type", required_argument, 0, '1'},
{"verbose", no_argument, 0, 'v'},
{"unique", no_argument, 0, 'u'},
{"help", no_argument, 0, 'h'},
{0, 0, 0, 0},
};
if(put_glob_mask) {
free(put_glob_mask);
put_glob_mask = 0;
}
if(put_dir_glob_mask) {
free(put_dir_glob_mask);
put_dir_glob_mask = 0;
}
#ifdef HAVE_REGEX
if(put_rx_mask_set) {
regfree(&put_rx_mask);
put_rx_mask_set = 0;
}
if(put_dir_rx_mask_set) {
regfree(&put_dir_rx_mask);
put_dir_rx_mask_set = 0;
}
#endif
put_skip_empty = false;
optind = 0; /* force getopt() to re-initialize */
while((c = getopt_long(argc, argv,
"aDefHiL:no:pPqrRstvum:M:", longopts, 0)) != EOF)
{
switch(c) {
case 'i':
opt |= PUT_INTERACTIVE;
break;
case 'f':
opt |= PUT_FORCE;
break;
case 'e':
opt |= PUT_SKIP_EMPTY;
put_skip_empty = true;
break;
case '3': /* --dir-mask=GLOB */
free(put_dir_glob_mask);
put_dir_glob_mask = xstrdup(optarg);
unquote(put_dir_glob_mask);
break;
#ifdef HAVE_REGEX
case '4': /* --dir-rx-mask=REGEXP */
if(put_dir_rx_mask_set) {
regfree(&put_dir_rx_mask);
put_dir_rx_mask_set = false;
}
unquote(optarg);
ret = regcomp(&put_dir_rx_mask, optarg, REG_EXTENDED);
if(ret != 0) {
regerror(ret, &put_dir_rx_mask, put_rx_errbuf, 128);
ftp_err(_("Regexp '%s' failed: %s\n"), optarg, put_rx_errbuf);
return;
} else
put_dir_rx_mask_set = true;
break;
#endif
case 'o':
put_output = tilde_expand_home(optarg, ftp->homedir);
path_collapse(put_output);
stripslash(put_output);
break;
case 'H':
opt |= PUT_NOHUP;
break;
case 'L':
free(logfile);
logfile = xstrdup(optarg);
unquote(logfile);
break;
case 'm': /* --mask */
free(put_glob_mask);
put_glob_mask = xstrdup(optarg);
break;
#ifdef HAVE_REGEX
case 'M': /* --rx-mask */
if(put_rx_mask_set) {
regfree(&put_rx_mask);
put_rx_mask_set = false;
}
ret = regcomp(&put_rx_mask, optarg, REG_EXTENDED);
if(ret != 0) {
regerror(ret, &put_rx_mask, put_rx_errbuf, 128);
ftp_err(_("Regexp '%s' failed: %s\n"), optind, put_rx_errbuf);
return;
} else
put_rx_mask_set = true;
break;
#endif
case 'n':
opt |= PUT_NEWER;
break;
case 'v':
opt |= PUT_VERBOSE;
break;
case 'q':
opt &= ~PUT_VERBOSE;
break;
case 'a':
opt |= PUT_APPEND;
break;
case 'D':
opt |= PUT_DELETE_AFTER;
break;
case 'u':
opt |= PUT_UNIQUE;
if(!ftp->has_stou_command) {
fprintf(stderr, _("Remote doesn't support the STOU"
" (store unique) command\n"));
return;
}
break;
case 'r':
opt |= PUT_RECURSIVE;
break;
case 's':
opt |= PUT_SKIP_EXISTING;
break;
case 'R':
opt |= PUT_RESUME;
break;
case 't':
opt |= PUT_TAGGED;
break;
case '1':
if(strncmp(optarg, "ascii", strlen(optarg)) == 0)
opt |= PUT_ASCII;
else if(strncmp(optarg, "binary", strlen(optarg)) == 0)
opt |= PUT_BINARY;
else {
printf(_("Invalid option argument --type=%s\n"), optarg);
return;
}
break;
case 'p':
opt |= PUT_PRESERVE;
break;
case 'P':
opt |= PUT_PARENTS;
break;
case 'h':
print_put_syntax();;
return;
case '?':
return;
}
}
if(optind>=argc && !test(opt, PUT_TAGGED)) {
/* fprintf(stderr, _("missing argument, try 'put --help'"*/
/* " for more information\n"));*/
minargs(optind);
return;
}
if(test(opt, PUT_APPEND) && test(opt, PUT_SKIP_EXISTING)) {
printf("Can't use --append and --skip-existing simultaneously\n");
return;
}
need_connected();
need_loggedin();
gl = lglob_create();
while(optind < argc) {
char *f;
f = tilde_expand_home(argv[optind], gvLocalHomeDir);
stripslash(f);
lglob_glob(gl, f, true, put_exclude_func);
optind++;
}
if(list_numitem(gl) == 0) {
if(!test(opt, PUT_TAGGED)) {
list_free(gl);
return;
} else if(list_numitem(gvLocalTagList) == 0) {
printf(_("no tagged files\n"));
list_free(gl);
return;
}
}
free(ftp->last_mkpath);
ftp->last_mkpath = 0;
put_quit = false;
put_batch = put_owbatch = put_delbatch = test(opt, PUT_FORCE);
if(test(opt, PUT_FORCE))
opt &= ~PUT_INTERACTIVE;
if(put_output && !test(opt, PUT_RECURSIVE) && list_numitem(gl) +
(test(opt, PUT_TAGGED) ? list_numitem(gvLocalTagList) : 0) == 1)
{
opt |= PUT_OUTPUT_FILE;
}
gvInTransfer = true;
gvInterrupted = false;
if(test(opt, PUT_NOHUP)) {
int r = 0;
pid = fork();
if(pid == 0) {
r = transfer_init_nohup(logfile);
if(r != 0)
exit(0);
}
if(r != 0)
return;
if(pid == 0) { /* child process */
transfer_begin_nohup(argc, argv);
if(!test(opt, PUT_FORCE) && !test(opt, PUT_RESUME))
opt |= PUT_UNIQUE;
opt |= PUT_FORCE;
putfiles(gl, opt, put_output);
list_free(gl);
if(test(opt, PUT_TAGGED)) {
putfiles(gvLocalTagList, opt, put_output);
list_clear(gvLocalTagList);
}
free(put_output);
transfer_end_nohup();
}
if(pid == -1) {
perror("fork()");
return;
}
/* parent process */
sleep(1);
printf("%d\n", pid);
input_save_history();
gvars_destroy();
reset_xterm_title();
exit(0);
}
putfiles(gl, opt, put_output);
list_free(gl);
if(test(opt, PUT_TAGGED)) {
putfiles(gvLocalTagList, opt, put_output);
list_clear(gvLocalTagList);
}
free(put_output);
gvInTransfer = false;
}
/* sends an FTP command on the control channel
* returns reply status code on success or -1 on error
*/
int ftp_cmd(const char *cmd, ...)
{
va_list ap;
int resp;
bool recon = false;
if(!sock_connected(ftp->ctrl)) {
ftp_err(_("No control connection\n"));
ftp->code = ctNone;
ftp->fullcode = -1;
return -1;
}
ftp_set_abort_handler();
ugly:
va_start(ap, cmd);
sock_krb_vprintf(ftp->ctrl, cmd, ap);
sock_printf(ftp->ctrl, "\r\n");
sock_flush(ftp->ctrl);
va_end(ap);
if(ferror(sock_sout(ftp->ctrl))) {
ftp_err(_("error writing command"));
ftp_err(" (");
va_start(ap, cmd);
vfprintf(stderr, cmd, ap);
va_end(ap);
va_start(ap, cmd);
ftp_vtrace(cmd, ap);
va_end(ap);
ftp_err(")\n");
ftp->code = ctNone;
ftp->fullcode = -1;
return -1;
}
va_start(ap, cmd);
ftp_print_cmd(cmd, ap);
va_end(ap);
resp = ftp_read_reply();
ftp_set_close_handler();
if(resp == 421) { /* server is closing control connection! */
ftp_err(_("Server closed control connection\n"));
if(gvAutoReconnect && ftp_loggedin() && strcasecmp(cmd, "QUIT") != 0) {
if(recon) {
ftp_err(_("Reconnect failed\n"));
} else {
ftp_err(_("Automatic reconnect...\n"));
ftp_reopen();
recon = true;
goto ugly;
}
} else {
/* ftp_close();*/
ftp->fullcode = 421;
ftp->code = 4;
return -1;
}
}
return resp;
}
int ftp_login(const char *guessed_username, const char *anonpass)
{
int ptype, r;
static url_t *purl = 0;
if(!ftp_connected())
return 1;
if(!ftp->url)
return -1;
#ifdef HAVE_LIBSSH
if (ftp->session)
/* login authentication is performed by the ssh program */
return 0;
#endif
ptype = proxy_type(ftp->url);
if(purl) {
url_destroy(purl);
purl = 0;
}
if(ptype > 0)
purl = url_clone(gvProxyUrl);
r = get_username(ftp->url, guessed_username, false);
if(r != 0)
return r;
if(ptype > 1 && ptype < 7) {
r = get_username(purl, 0, true);
if(r != 0)
return r;
}
#ifdef SECFTP
ftp->sec_complete = false;
ftp->data_prot = prot_clear;
/* don't use secure stuff if anonymous
*/
if(!url_isanon(ftp->url)) {
list *mechlist;
/* request a protection level
*/
if(ftp->url->protlevel) {
if(sec_request_prot(ftp->url->protlevel) != 0)
ftp_err(_("Invalid protection level '%s'\n"),
ftp->url->protlevel);
}
/* get list of mechanisms to try
*/
mechlist = ftp->url->mech ? ftp->url->mech : gvDefaultMechanism;
if(mechlist) {
listitem *li = mechlist->first;
int ret = 0;
for(; li; li=li->next) {
const char *mech_name;
mech_name = secext_name((char *)li->data);
if(mech_name == 0) {
ftp_err(_("unknown mechanism '%s'\n"), (char *)li->data);
continue;
}
if(mech_unsupported(mech_name)) {
ftp_err(_("Yafc was not compiled with support for %s\n"),
mech_name);
continue;
}
ret = sec_login(host_getname(ftp->host), mech_name);
if(ret == -1) {
if(ftp->code == ctError
&& ftp->fullcode != 504 && ftp->fullcode != 534)
url_setmech(ftp->url, "none");
}
if(ret != 1)
break;
}
}
if(ftp->sec_complete)
ftp_err(_("Authentication successful.\n"));
else
ftp_err(_("*** Using plaintext username"
" and password ***\n"));
}
#endif
if(url_isanon(ftp->url))
fprintf(stderr, _("logging in anonymously...\n"));
ftp_set_tmp_verbosity(ftp->url->password ? vbError : vbCommand);
switch(ptype) {
case 0:
default:
ftp_cmd("USER %s", ftp->url->username);
break;
case 1:
ftp_cmd("USER %s@%s", ftp->url->username, ftp->url->hostname);
break;
case 2:
case 3:
case 4:
ftp_cmd("USER %s", purl->username);
if(ftp->code == ctContinue) {
r = get_password(purl, 0, true);
if(r != 0)
return 0;
ftp_cmd("PASS %s", purl->password);
/* FIXME: what reply code do we expect now? */
if(ftp->code < ctTransient) {
if(ptype == 2) {
ftp_cmd("USER %s@%s",
ftp->url->username, ftp->url->hostname);
} else {
if(ptype == 3)
ftp_cmd("SITE %s", purl->hostname);
else
ftp_cmd("OPEN %s", purl->hostname);
if(ftp->code < ctTransient)
ftp_cmd("USER %s", ftp->url->username);
}
}
}
break;
case 5:
ftp_cmd("USER %s@%s@%s",
ftp->url->username, purl->username, ftp->url->hostname);
break;
case 6:
ftp_cmd("USER %s@%s", purl->username, ftp->url->hostname);
if(ftp->code == ctContinue) {
r = get_password(purl, 0, true);
if(r != 0)
return 0;
ftp_cmd("PASS %s", purl->password);
if(ftp->code < ctTransient)
ftp_cmd("USER %s", ftp->url->username);
}
break;
case 7:
ftp_cmd("USER %s@%s:%i", ftp->url->username, ftp->url->hostname, ftp->url->port);
break;
}
if(ftp->code == ctContinue) {
ftp->loggedin = false;
r = get_password(ftp->url, anonpass, false);
if(r != 0)
return r;
if(ptype == 5) {
r = get_password(purl, 0, true);
if(r != 0) {
url_destroy(purl);
purl = 0;
return 0;
}
}
ftp_set_tmp_verbosity(vbCommand);
switch(ptype) {
default:
case 0:
case 1:
case 2:
case 3:
case 4:
case 6:
ftp_cmd("PASS %s", ftp->url->password);
break;
case 5:
ftp_cmd("PASS %s@%s", ftp->url->password, purl->password);
break;
}
}
url_destroy(purl);
purl = 0;
if(ftp->code > ctContinue) {
if(ftp->fullcode == 530 && ftp_loggedin()) {
/* this probable means '530 Already logged in' */
return 2;
}
ftp->loggedin = false;
return 1;
}
if(ftp->code == ctComplete) {
ftp->loggedin = true;
#ifdef SECFTP
/* we are logged in, now set the requested data protection level
* requested from the autologin information in the config file,
* if any, else uses default protection level 'clear', ie
* no protection on the data channel
*/
if(ftp->sec_complete) {
sec_set_protection_level();
fprintf(stderr, _("Data protection is %s\n"),
level_to_name(ftp->data_prot));
}
#endif
ftp->homedir = ftp_getcurdir();
ftp->curdir = xstrdup(ftp->homedir);
ftp->prevdir = xstrdup(ftp->homedir);
if(ftp->url->directory)
ftp_chdir(ftp->url->directory);
ftp_get_feat();
return 0;
}
if(ftp->code == ctTransient)
return 1;
return -1;
}
int ftp_open_url(url_t *urlp, bool reset_vars)
{
bool use_proxy;
int i;
if(reset_vars)
ftp_reset_vars();
/* don't assume server is in ascii mode initially even if RFC says so */
ftp->prev_type = '?';
#ifdef HAVE_POSIX_SIGSETJMP
if(sigsetjmp(open_timeout_jmp, 1))
#else
if(setjmp(open_timeout_jmp))
#endif
{
ftp_close();
ftp_err(_("Connection timeout after %u seconds\n"),
ftp->open_timeout);
return 1;
}
ftp_set_signal(SIGALRM, ftp_open_handler);
alarm(ftp->open_timeout);
use_proxy = (proxy_type(urlp) != 0);
ftp_err(_("Looking up %s... "),
use_proxy ? gvProxyUrl->hostname : urlp->hostname);
/* Set the default port (22) for SSH if no port is specified. We
* need to do this here, 'cause host_lookup() sets it to 21
* (default port for vanilla FTP)
*/
if(urlp->protocol) {
if(strcmp(urlp->protocol, "sftp") == 0)
url_setprotocol(urlp, "ssh");
if(strcmp(urlp->protocol, "ssh") == 0 && urlp->port == -1)
urlp->port = 22; /* default SSH port */
}
ftp->host = host_create(use_proxy ? gvProxyUrl : urlp);
if(!host_lookup(ftp->host)) {
herror(host_getname(ftp->host));
alarm(0);
ftp_set_signal(SIGALRM, SIG_IGN);
return -1;
}
/* keep the value in urlp->port
urlp->port = ntohs(ftp->host->port);
and set it to 21 if it is -1 */
if(urlp->port == -1) {
urlp->port = 21;
}
fprintf(stderr, "\r ");
i = strlen(use_proxy ? gvProxyUrl->hostname : urlp->hostname);
while(i--)
fprintf(stderr, " ");
fprintf(stderr, "\r");
ftp_trace("\n");
#ifdef HAVE_LIBSSH
if(urlp->protocol && strcmp(urlp->protocol, "ssh") == 0) {
int ret = ssh_open_url(urlp);
alarm(0);
return ret;
}
#endif
if(urlp->protocol && strcmp(urlp->protocol, "ftp") != 0) {
ftp_err(_("Sorry, don't know how to handle your '%s' protocol\n"
"trying 'ftp' instead...\n"),
urlp->protocol);
url_setprotocol(urlp, 0);
}
if(use_proxy) {
ftp_err(_("Connecting to proxy %s at port %d...\n"),
host_getoname(ftp->host), urlp->port);
} else {
ftp_err(_("Connecting to %s at port %d...\n"),
host_getoname(ftp->host), urlp->port);
}
ftp->ctrl = sock_create();
if (ftp->ctrl == 0) {
ftp_err(_("Unable to create socket.\n"));
alarm(0);
ftp_set_signal(SIGALRM, SIG_IGN);
return -1;
}
if(!sock_connect_host(ftp->ctrl, ftp->host)) {
alarm(0);
ftp_set_signal(SIGALRM, SIG_IGN);
return -1;
}
sock_lowdelay(ftp->ctrl);
char* ip = host_getip(ftp->host);
ftp_err(_("Connected to %s ([%s]:%d).\n"),
host_getoname(ftp->host), ip, urlp->port);
free(ip);
/* read startup message from server */
ftp_set_tmp_verbosity(vbCommand);
ftp_read_reply();
if(ftp->fullcode == 120) {
ftp_set_tmp_verbosity(vbCommand);
ftp_read_reply();
}
alarm(0);
ftp_set_signal(SIGALRM, SIG_IGN);
if(!sock_connected(ftp->ctrl)) {
ftp_close();
return 1;
}
ftp->connected = (ftp->fullcode == 220);
if(ftp->connected) {
void (*tracefunq)(const char *fmt, ...);
url_destroy(ftp->url);
ftp->url = url_clone(urlp);
tracefunq = (ftp->verbosity == vbDebug ? ftp_err : ftp_trace);
char* remote_addr = printable_address(sock_remote_addr(ftp->ctrl)),
*local_addr = printable_address(sock_local_addr(ftp->ctrl));
tracefunq("remote address: %s\n", remote_addr);
tracefunq("local address: %s\n", local_addr);
free(remote_addr);
free(local_addr);
return 0;
} else {
ftp_close();
return 1;
}
}
/* reads one line from server into ftp->reply
* returns 0 on success or -1 on failure
*/
static int ftp_gets(void)
{
int c, i=0;
ftp->reply[0] = 0;
if(!sock_connected(ftp->ctrl)) {
ftp_err(_("No control connection\n"));
return -1;
}
while(true) {
c = sock_get(ftp->ctrl);
if(c == EOF) {
ftp_err(_("Server has closed control connection\n"));
ftp_close();
return -1;
}
else if(c == 255/*IAC*/) { /* handle telnet commands */
switch(c = sock_get(ftp->ctrl)) {
case 251/*WILL*/:
case 252/*WONT*/:
c = sock_get(ftp->ctrl);
sock_printf(ftp->ctrl, "%c%c%c", 255/*IAC*/, 254/*DONT*/, c);
sock_flush(ftp->ctrl);
break;
case 253/*DO*/:
case 254/*DONT*/:
c = sock_get(ftp->ctrl);
sock_printf(ftp->ctrl, "%c%c%c", 255/*IAC*/, 252/*WONT*/, c);
sock_flush(ftp->ctrl);
break;
default:
break;
}
continue;
}
else if(c == '\r') {
c = sock_get(ftp->ctrl);
if(c == 0)
c = '\r';
else if(c == '\n') {
ftp->reply[i++] = (char)c;
break;
} else if(c == EOF)
/* do nothing */ ;
else { /* telnet protocol violation, hmpf... */
sock_unget(ftp->ctrl, c);
continue;
}
}
else if(c == '\n')
break;
if(i < MAXREPLY)
ftp->reply[i++] = (char)c;
}
if(i >= MAXREPLY) {
ftp_err(_("Reply too long (truncated)\n"));
i = MAXREPLY;
}
ftp->reply[i] = '\0';
ftp->fullcode = atoi(ftp->reply);
#ifdef SECFTP
{
int r = 0;
switch(ftp->fullcode) { /* handle protected responses 6xx */
case 631:
r = sec_read_msg(ftp->reply, prot_safe);
break;
case 632:
r = sec_read_msg(ftp->reply, prot_private);
break;
case 633:
r = sec_read_msg(ftp->reply, prot_confidential);
break;
}
if(r == -1) {
ftp->fullcode = 0;
ftp->code = vbNone;
return 0;
} else
ftp->fullcode = atoi(ftp->reply);
}
#endif
strip_trailing_chars(ftp->reply, "\n\r");
ftp->code = ftp->fullcode / 100;
return ftp->fullcode;
}
int ssh_open_url(url_t* urlp)
{
ftp->session = ssh_new();
if (!ftp->session)
return -1;
/* set log level */
if (ftp_get_verbosity() == vbDebug)
{
int verbosity = SSH_LOG_PROTOCOL;
ssh_options_set(ftp->session, SSH_OPTIONS_LOG_VERBOSITY, &verbosity);
}
/* If we have ssh options from yafcrc, load them */
if (gvSSHOptions) {
args_t *args = args_create();
args_init(args, 0, NULL);
args_push_back(args, gvSSHOptions);
int argc = 0;
if (ssh_options_getopt(ftp->session, &argc, args->argv) != SSH_OK) {
ftp_err(_("Failed to load SSH options from yafcrc config (ssh_options = '%s')\n"), gvSSHOptions);
ssh_free(ftp->session);
ftp->session = NULL;
return -1;
}
args->argc = argc;
args_destroy(args);
}
/* set host name */
ssh_options_set(ftp->session, SSH_OPTIONS_HOST, urlp->hostname);
/* if we have port use that one */
if (urlp->port > 0)
ssh_options_set(ftp->session, SSH_OPTIONS_PORT, &urlp->port);
/* parse .ssh/config */
int r = ssh_options_parse_config(ftp->session, NULL);
if (r != SSH_OK)
{
ftp_err(_("Failed to parse ssh config: %s\n"), ssh_get_error(ftp->session));
ssh_free(ftp->session);
ftp->session = NULL;
return r;
}
/* if we have username use that one */
if (urlp->username)
ssh_options_set(ftp->session, SSH_OPTIONS_USER, urlp->username);
/* connect to server */
r = ssh_connect(ftp->session);
if (r != SSH_OK)
{
ftp_err(_("Couldn't initialise connection to server: %s\n"), ssh_get_error(ftp->session));
ssh_free(ftp->session);
ftp->session = NULL;
return r;
}
/* verify server */
if (verify_knownhost(ftp->session))
{
ssh_disconnect(ftp->session);
ssh_free(ftp->session);
ftp->session = NULL;
return -1;
}
/* authenticate user */
r = test_several_auth_methods(ftp->session, urlp);
if (r != SSH_OK)
{
ftp_err(_("Authentication failed: %s\n"), ssh_get_error(ftp->session));
ssh_disconnect(ftp->session);
ssh_free(ftp->session);
ftp->session = NULL;
return -1;
}
ftp->ssh_version = ssh_get_version(ftp->session);
if (!ftp->ssh_version) {
ftp_err(_("Couldn't initialise connection to server\n"));
return -1;
}
ftp->sftp_session = sftp_new(ftp->session);
if (!ftp->sftp_session)
{
ftp_err(_("Couldn't initialise ftp subsystem: %s\n"), ssh_get_error(ftp->session));
ssh_disconnect(ftp->session);
ssh_free(ftp->session);
ftp->session = NULL;
return -1;
}
r = sftp_init(ftp->sftp_session);
if (r != SSH_OK)
{
ftp_err(_("Couldn't initialise ftp subsystem: %s\n"), ssh_get_error(ftp->sftp_session));
sftp_free(ftp->sftp_session);
ftp->sftp_session = NULL;
ssh_disconnect(ftp->session);
ssh_free(ftp->session);
ftp->session = NULL;
return r;
}
ftp->connected = true;
ftp->loggedin = true;
free(ftp->homedir);
ftp->homedir = ftp_getcurdir();
url_destroy(ftp->url);
ftp->url = url_clone(urlp);
free(ftp->curdir);
ftp->curdir = xstrdup(ftp->homedir);
free(ftp->prevdir);
ftp->prevdir = xstrdup(ftp->homedir);
if (ftp->url->directory)
ftp_chdir(ftp->url->directory);
ftp_get_feat();
return 0;
}
rdirectory *ftp_read_directory(const char *path)
{
FILE *fp = 0;
rdirectory *rdir;
bool is_curdir = false;
bool _failed = false;
char *dir;
bool is_mlsd = false;
#ifdef HAVE_LIBSSH
if(ftp->session)
return ssh_read_directory(path);
#endif
dir = ftp_path_absolute(path);
stripslash(dir);
is_curdir = (strcmp(dir, ftp->curdir) == 0);
if((fp = tmpfile()) == NULL) { /* can't create a tmpfile */
ftp_err("Unable to create temp file: %s\n", strerror(errno));
free(dir);
return 0;
}
/* we do a "CWD" before the listing, because: we want a listing of
* the directory contents, not the directory itself, and some
* servers misunderstand this. If the target is a link to a
* directory, we have to do this.
*/
if(!is_curdir) {
ftp_cmd("CWD %s", dir);
if(ftp->code != ctComplete)
goto failed;
}
if(ftp->has_mlsd_command) {
is_mlsd = true;
#if 0
/* PureFTPd (1.0.11) doesn't recognize directory arguments
* with spaces, not even quoted, it just chops the argument
* string after the first space, duh... so we have to CWD to
* the directory...
*/
char *asdf;
asprintf(&asdf, "%s/", dir);
/* Hack to get around issue in PureFTPd (up to version 0.98.2):
* doing a 'MLSD link-to-dir' on PureFTPd closes the control
* connection, however, 'MLSD link-to-dir/' works fine.
*/
_failed = (ftp_list("MLSD", asdf, fp) != 0);
free(asdf);
#else
_failed = (ftp_list("MLSD", 0, fp) != 0);
#endif
if(_failed && ftp->code == ctError)
ftp->has_mlsd_command = false;
}
if(!ftp->has_mlsd_command) {
_failed = (ftp_list("LIST", 0, fp) != 0);
is_mlsd = false;
}
if(!is_curdir)
ftp_cmd("CWD %s", ftp->curdir);
if(_failed)
goto failed;
rewind(fp);
rdir = rdir_create();
if(rdir_parse(rdir, fp, dir, is_mlsd) != 0) {
rdir_destroy(rdir);
goto failed;
}
fclose(fp);
ftp_trace("added directory '%s' to cache\n", dir);
list_additem(ftp->cache, rdir);
free(dir);
return rdir;
failed: /* forgive me father, for I have goto'ed */
if (fp)
fclose(fp);
free(dir);
return 0;
}
int ssh_list(const char *cmd, const char *param, FILE *fp)
{
ftp_err(_("ssh_list() not implemented yet\n"));
return -1;
}
rdirectory *ssh_read_directory(const char *path)
{
char *p = ftp_path_absolute(path);
stripslash(p);
sftp_dir dir = sftp_opendir(ftp->sftp_session, p);
if (!dir)
{
free(p);
return 0;
}
ftp_trace("*** start parsing directory listing ***\n");
rdirectory* rdir = rdir_create();
sftp_attributes attrib = NULL;
while ((attrib = sftp_readdir(ftp->sftp_session, dir)) != NULL)
{
ftp_trace("%s\n", attrib->longname);
rfile* rf = rfile_create();
rf->perm = perm2string(attrib->permissions);
rf->nhl = 0; // atoi(e);
if (attrib->owner)
rf->owner = xstrdup(attrib->owner);
if (attrib->group)
rf->group = xstrdup(attrib->group);
if (asprintf(&rf->path, "%s/%s", p, attrib->name) == -1)
{
ftp_err(_("Failed to allocate memory.\n"));
sftp_closedir(dir);
free(p);
rdir_destroy(rdir);
rfile_destroy(rf);
}
rf->mtime = attrib->mtime;
rf->date = time_to_string(rf->mtime);
rf->size = attrib->size;
rfile_parse_colors(rf);
rf->link = NULL;
if (rislink(rf) && ftp->ssh_version > 2)
rf->link = sftp_readlink(ftp->sftp_session, rf->path);
list_additem(rdir->files, (void *)rf);
sftp_attributes_free(attrib);
}
ftp_trace("*** end parsing directory listing ***\n");
if (!sftp_dir_eof(dir))
{
ftp_err(_("Couldn't list directory: %s\n"), ssh_get_error(ftp->session));
sftp_closedir(dir);
free(p);
rdir_destroy(rdir);
return NULL;
}
sftp_closedir(dir);
rdir->path = p;
ftp_trace("added directory '%s' to cache\n", p);
list_additem(ftp->cache, rdir);
return rdir;
}
void cmd_get(int argc, char **argv)
{
list *gl;
int opt=GET_VERBOSE, c;
char *logfile = 0;
pid_t pid;
struct group *grp;
char *get_output = 0;
int stat_thresh = gvStatsThreshold;
#ifdef HAVE_REGEX
int ret;
char get_rx_errbuf[129];
#endif
struct option longopts[] = {
{"append", no_argument, 0, 'a'},
{"chmod", required_argument, 0, 'c'},
{"chgrp", required_argument, 0, '2'},
{"no-dereference", no_argument, 0, 'd'},
{"delete-after", no_argument, 0, 'D'},
{"dir-mask", required_argument, 0, '3'},
#ifdef HAVE_REGEX
{"dir-rx-mask", required_argument, 0, '4'},
#endif
{"interactive", no_argument, 0, 'i'},
{"skip-empty", no_argument, 0, 'e'},
{"force", no_argument, 0, 'f'},
{"force-newer", no_argument, 0, 'F'},
{"logfile", required_argument, 0, 'L'},
{"mask", required_argument, 0, 'm'},
#ifdef HAVE_REGEX
{"rx-mask", required_argument, 0, 'M'},
#endif
{"newer", no_argument, 0, 'n'},
{"nohup", no_argument, 0, 'H'},
{"verbose", no_argument, 0, 'v'},
{"preserve", no_argument, 0, 'p'},
{"parents", no_argument, 0, 'P'},
{"quiet", no_argument, 0, 'q'},
{"recursive", no_argument, 0, 'r'},
{"resume", no_argument, 0, 'R'},
{"skip-existing", no_argument, 0, 's'},
{"stats", optional_argument, 0, 'S'},
{"tagged", no_argument, 0, 't'},
{"type", required_argument, 0, '1'},
{"unique", no_argument, 0, 'u'},
{"output", required_argument, 0, 'o'},
{"help", no_argument, 0, 'h'},
{0, 0, 0, 0},
};
if(cmod) {
mode_free(cmod);
cmod = 0;
}
if(get_glob_mask) {
free(get_glob_mask);
get_glob_mask = 0;
}
if(get_dir_glob_mask) {
free(get_dir_glob_mask);
get_dir_glob_mask = 0;
}
#ifdef HAVE_REGEX
if(get_rx_mask_set) {
regfree(&get_rx_mask);
get_rx_mask_set = 0;
}
if(get_dir_rx_mask_set) {
regfree(&get_dir_rx_mask);
get_dir_rx_mask_set = 0;
}
#endif
get_skip_empty = false;
optind = 0; /* force getopt() to re-initialize */
while((c=getopt_long(argc, argv, "abHc:dDeio:fFL:tnpPvqrRsuT:m:M:",
longopts, 0)) != EOF)
{
switch(c) {
case 'a':
opt |= GET_APPEND;
break;
case 'c':
cmod = mode_compile(optarg, MODE_MASK_ALL);
if(cmod == NULL) {
fprintf(stderr, _("Invalid mode for --chmod: %s\n"), optarg);
return;
}
opt |= GET_CHMOD;
break;
case '2': /* --chgrp */
grp = getgrnam(optarg);
if(grp == 0) {
fprintf(stderr, _("%s is not a valid group name\n"), optarg);
return;
}
{
int i;
for(i=0; grp->gr_mem && grp->gr_mem[i]; i++) {
if(strcmp(gvUsername, grp->gr_mem[i]) == 0)
break;
}
if(!grp->gr_mem[i]) {
fprintf(stderr,
_("you are not a member of group %s\n"), optarg);
return;
}
}
group_change = grp->gr_gid;
opt |= GET_CHGRP;
break;
case 'D':
opt |= GET_DELETE_AFTER;
break;
case 'd':
opt |= GET_NO_DEREFERENCE;
break;
case 'e':
opt |= GET_SKIP_EMPTY;
get_skip_empty = true;
break;
case '3': /* --dir-mask=GLOB */
free(get_dir_glob_mask);
get_dir_glob_mask = xstrdup(optarg);
unquote(get_dir_glob_mask);
break;
#ifdef HAVE_REGEX
case '4': /* --dir-rx-mask=REGEXP */
if(get_dir_rx_mask_set) {
regfree(&get_dir_rx_mask);
get_dir_rx_mask_set = false;
}
unquote(optarg);
ret = regcomp(&get_dir_rx_mask, optarg, REG_EXTENDED);
if(ret != 0) {
regerror(ret, &get_dir_rx_mask, get_rx_errbuf, sizeof(get_rx_errbuf) - 1);
ftp_err(_("Regexp '%s' failed: %s\n"), optarg, get_rx_errbuf);
return;
} else
get_dir_rx_mask_set = true;
break;
#endif
case 'i':
opt |= GET_INTERACTIVE;
break;
case 'f':
opt |= GET_FORCE;
break;
case 'F':
opt |= GET_FORCE_NEWER;
break;
case 'm': /* --mask */
free(get_glob_mask);
get_glob_mask = xstrdup(optarg);
unquote(get_glob_mask);
break;
#ifdef HAVE_REGEX
case 'M': /* --rx-mask */
if(get_rx_mask_set) {
regfree(&get_rx_mask);
get_rx_mask_set = false;
}
unquote(optarg);
ret = regcomp(&get_rx_mask, optarg, REG_EXTENDED);
if(ret != 0) {
regerror(ret, &get_rx_mask, get_rx_errbuf, sizeof(get_rx_errbuf) - 1);
ftp_err(_("Regexp '%s' failed: %s\n"), optarg, get_rx_errbuf);
return;
} else
get_rx_mask_set = true;
break;
#endif
case 'o':
get_output = tilde_expand_home(optarg, gvLocalHomeDir);
/*stripslash(get_output);*/
unquote(get_output);
break;
case 'v':
opt |= GET_VERBOSE;
break;
case 'p':
opt |= GET_PRESERVE;
break;
case 'P':
opt |= GET_PARENTS;
break;
case 'H':
opt |= GET_NOHUP;
break;
case 'q':
opt &= ~GET_VERBOSE;
break;
case 'r':
opt |= GET_RECURSIVE;
break;
case 's':
opt |= GET_SKIP_EXISTING;
break;
case 'S':
stat_thresh = optarg ? atoi(optarg) : 0;
break;
case 'R':
opt |= GET_RESUME;
break;
case '1':
if(strncmp(optarg, "ascii", strlen(optarg)) == 0)
opt |= GET_ASCII;
else if(strncmp(optarg, "binary", strlen(optarg)) == 0)
opt |= GET_BINARY;
else {
printf(_("Invalid option argument --type=%s\n"), optarg);
return;
}
break;
case 'u':
opt |= GET_UNIQUE;
break;
case 'L':
free(logfile);
logfile = xstrdup(optarg);
unquote(logfile);
break;
case 't':
opt |= GET_TAGGED;
break;
case 'n':
opt |= GET_NEWER;
break;
case 'h':
print_get_syntax();
return;
case '?':
return;
}
}
if(optind>=argc && !test(opt, GET_TAGGED)) {
minargs(optind);
return;
}
need_connected();
need_loggedin();
gl = rglob_create();
while(optind < argc) {
stripslash(argv[optind]);
if(rglob_glob(gl, argv[optind], true, true, get_exclude_func) == -1)
fprintf(stderr, _("%s: no matches found\n"), argv[optind]);
optind++;
}
if(list_numitem(gl) == 0 && !test(opt, GET_TAGGED)) {
rglob_destroy(gl);
return;
}
if(test(opt, GET_TAGGED)
&& (!ftp->taglist || list_numitem(ftp->taglist)==0))
{
printf(_("no tagged files\n"));
if(list_numitem(gl) == 0) {
rglob_destroy(gl);
return;
}
}
get_quit = false;
get_batch = get_owbatch = get_delbatch = test(opt, GET_FORCE);
if(test(opt, GET_FORCE))
opt &= ~GET_INTERACTIVE;
if(get_output && !test(opt, GET_RECURSIVE) && list_numitem(gl) +
(test(opt, GET_TAGGED) ? list_numitem(ftp->taglist) : 0) == 1)
{
/* if the argument to --output ends with a slash, we assume the
* user wants the destination to be a directory
*/
char *e = strrchr(get_output, 0);
if(e && e[-1] != '/')
opt |= GET_OUTPUT_FILE;
}
stats_reset(gvStatsTransfer);
gvInTransfer = true;
gvInterrupted = false;
if(test(opt, GET_NOHUP)) {
int r = 0;
pid = fork();
if(pid == 0) {
r = transfer_init_nohup(logfile);
if(r != 0)
exit(0);
}
if(r != 0)
return;
if(pid == 0) { /* child process */
transfer_begin_nohup(argc, argv);
if(!test(opt, GET_FORCE) && !test(opt, GET_RESUME))
opt |= GET_UNIQUE;
opt |= GET_FORCE;
if(list_numitem(gl))
getfiles(gl, opt, get_output);
rglob_destroy(gl);
if(ftp->taglist && test(opt, GET_TAGGED))
getfiles(ftp->taglist, opt, get_output);
free(get_output);
transfer_end_nohup();
}
if(pid == -1) {
perror("fork()");
return;
}
/* parent process */
sleep(1);
printf("%d\n", pid);
input_save_history();
gvars_destroy();
reset_xterm_title();
exit(0);
}
if(list_numitem(gl))
getfiles(gl, opt, get_output);
rglob_destroy(gl);
if(ftp->taglist && test(opt, GET_TAGGED))
getfiles(ftp->taglist, opt, get_output);
free(get_output);
mode_free(cmod);
cmod = 0;
gvInTransfer = false;
stats_display(gvStatsTransfer, stat_thresh);
}
static int
krb4_auth(void *app_data, char *host)
{
int ret;
char *p;
int len;
KTEXT_ST adat;
MSG_DAT msg_data;
int checksum;
uint32_t cs;
struct krb4_data *d = app_data;
#ifdef HAVE_KRB_GET_OUR_IP_FOR_REALM
struct sockaddr_in *localaddr = (struct sockaddr_in *)LOCAL_ADDR;
/* struct sockaddr_in *remoteaddr = (struct sockaddr_in *)REMOTE_ADDR;*/
#endif
checksum = getpid();
ret = mk_auth(d, &adat, "ftp", host, checksum);
if(ret == KDC_PR_UNKNOWN)
ret = mk_auth(d, &adat, "rcmd", host, checksum);
if(ret){
printf("%s\n", krb_get_err_text(ret));
return AUTH_CONTINUE;
}
#ifdef HAVE_KRB_GET_OUR_IP_FOR_REALM
if (krb_get_config_bool("nat_in_use")) {
struct in_addr natAddr;
if (krb_get_our_ip_for_realm(krb_realmofhost(host),
&natAddr) != KSUCCESS
&& krb_get_our_ip_for_realm(NULL, &natAddr) != KSUCCESS)
ftp_err(_("Can't get address for realm %s\n"),
krb_realmofhost(host));
else {
if (natAddr.s_addr != localaddr->sin_addr.s_addr) {
ftp_err(_("Using NAT IP address (%s) for kerberos 4\n"),
inet_ntoa(natAddr));
localaddr->sin_addr = natAddr;
}
}
}
#endif
if(base64_encode(adat.dat, adat.length, &p) < 0) {
ftp_err(_("Out of memory base64-encoding\n"));
return AUTH_CONTINUE;
}
ret = ftp_cmd("ADAT %s", p);
free(p);
if(ftp->code != ctComplete){
ftp_err(_("Server didn't accept auth data\n"));
return AUTH_ERROR;
}
p = strstr(ftp->reply, "ADAT=");
if(!p){
ftp_err(_("Remote host didn't send adat reply\n"));
return AUTH_ERROR;
}
p += 5;
len = base64_decode(p, adat.dat);
if(len < 0){
ftp_err(_("Failed to decode base64 from server\n"));
return AUTH_ERROR;
}
adat.length = len;
ret = krb_rd_safe(adat.dat, adat.length, &d->key,
(struct sockaddr_in *)hisctladdr,
(struct sockaddr_in *)myctladdr, &msg_data);
if(ret){
ftp_err(_("Error reading reply from server: %s\n"),
krb_get_err_text(ret));
return AUTH_ERROR;
}
krb_get_int(msg_data.app_data, &cs, 4, 0);
if(cs - checksum != 1){
ftp_err(_("Bad checksum returned from server\n"));
return AUTH_ERROR;
}
return AUTH_OK;
}
/* returns:
* 0 ok, remove file from list
* -1 failure
*/
static int getfile(const rfile *fi, unsigned int opt,
const char *output, const char *destname)
{
struct stat sb;
char* dest = NULL;
getmode_t how = getNormal;
bool mkunique = false;
int r, ret = -1;
if((get_glob_mask && fnmatch(get_glob_mask, base_name_ptr(fi->path),
FNM_EXTMATCH) == FNM_NOMATCH)
#ifdef HAVE_REGEX
|| (get_rx_mask_set && regexec(&get_rx_mask, base_name_ptr(fi->path),
0, 0, 0) == REG_NOMATCH)
#endif
)
{
return 0;
}
if(!output)
output = ".";
if(test(opt, GET_PARENTS)) {
char *apath = base_dir_xptr(fi->path);
if (asprintf(&dest, "%s%s/%s", output, apath, destname) == -1)
{
free(apath);
fprintf(stderr, _("Failed to allocate memory.\n"));
return -1;
}
free(apath);
} else {
/* check if -o option is given, if GET_OUTPUT_FILE is set, we only
* transfer one file and output is set to the filename. However, if
* the destination already exists and is a directory, we assume
* that the user meant a directory */
int dest_is_file = test(opt, GET_OUTPUT_FILE);
if(stat(output, &sb) == 0) {
if(S_ISDIR(sb.st_mode)) {
dest_is_file = false;
}
}
if(dest_is_file)
dest = xstrdup(output);
else
if (asprintf(&dest, "%s/%s", output, destname) == -1)
{
fprintf(stderr, _("Failed to allocate memory.\n"));
return -1;
}
}
/* make sure destination directory exists */
{
char *destdir = base_dir_xptr(dest);
if(destdir) {
bool r = make_path(destdir);
if(!r) {
if (errno == EEXIST)
ftp_err("`%s' exists but is not a directory\n", destdir);
else
ftp_err("%s: %s\n", destdir, strerror(errno));
transfer_mail_msg(_("Couldn't create directory: %s\n"),
destdir);
free(destdir);
return -1;
}
/* change permission and group, if requested */
if(test(opt, GET_CHMOD)) {
if(stat(destdir, &sb) == 0) {
mode_t m = sb.st_mode;
m = mode_adjust(m, cmod);
if(chmod(destdir, m) != 0)
perror(destdir);
} }
if(test(opt, GET_CHGRP)) {
if(chown(destdir, -1, group_change) != 0)
perror(dest);
}
free(destdir);
}
}
/* check if destination file exists */
if(stat(dest, &sb) == 0) {
if(test(opt, GET_SKIP_EXISTING)) {
if(test(opt, GET_VERBOSE)) {
char* sp = shortpath(dest, 42, gvLocalHomeDir);
fprintf(stderr, _("Local file '%s' exists, skipping...\n"),
sp);
stats_file(STATS_SKIP, 0);
free(sp);
}
return 0;
}
if(test(opt, GET_UNIQUE))
mkunique = true;
else if(test(opt, GET_APPEND))
how = getAppend;
else if(test(opt, GET_NEWER)) {
struct tm *fan = gmtime(&sb.st_mtime);
time_t ft = ftp_filetime(fi->path, test(opt, GET_FORCE_NEWER));
sb.st_mtime = gmt_mktime(fan);
ftp_trace("get -n: remote file: %s", ctime(&ft));
ftp_trace("get -n: local file: %s\n", ctime(&sb.st_mtime));
if(sb.st_mtime >= ft && ft != (time_t)-1) {
if(test(opt, GET_VERBOSE)) {
char* sp = shortpath(dest, 30, gvLocalHomeDir);
ftp_err(_(
"Local file '%s' is newer than remote, skipping...\n"),
sp);
stats_file(STATS_SKIP, 0);
free(sp);
}
return 0;
}
} else if(!test(opt, GET_RESUME)) {
if(!get_owbatch && !gvSighupReceived) {
struct tm *fan = gmtime(&sb.st_mtime);
time_t ft = ftp_filetime(fi->path, test(opt, GET_FORCE_NEWER));
int a;
char *e;
sb.st_mtime = gmt_mktime(fan);
e = xstrdup(ctime(&sb.st_mtime));
char* sp = shortpath(dest, 42, gvLocalHomeDir);
a = ask(ASKYES|ASKNO|ASKUNIQUE|ASKCANCEL|ASKALL|ASKRESUME,
ASKRESUME,
_("Local file '%s' exists\nLocal: %lld bytes, %sRemote: %lld bytes, %sOverwrite?"),
sp,
(unsigned long long) sb.st_size, e ? e : "unknown date\n",
ftp_filesize(fi->path), ctime(&ft));
free(sp);
free(e);
if(a == ASKCANCEL) {
get_quit = true;
return 0;
}
else if(a == ASKNO)
return 0;
else if(a == ASKUNIQUE)
mkunique = true;
else if(a == ASKALL) {
get_owbatch = true;
}
else if(a == ASKRESUME)
opt |= GET_RESUME; /* for this file only */
/* else a == ASKYES */
}
}
if(test(opt, GET_RESUME))
how = getResume;
}
if(mkunique) {
char* newdest = make_unique_filename(dest);
free(dest);
dest = newdest;
}
/* the file doesn't exist or we choosed to overwrite it, or changed dest */
if(rislink(fi) && test(opt, GET_NO_DEREFERENCE)) {
/* remove any existing destination */
unlink(dest);
ftp_err(_("symlinking '%s' to '%s'\n"), dest, fi->link);
if(symlink(fi->link, dest) != 0)
perror(dest);
ret = 0;
}
else {
r = do_the_get(fi->path, dest, how, opt);
if(r == 0) {
stats_file(STATS_SUCCESS, ftp->ti.total_size);
ret = 0;
if(test(opt, GET_PRESERVE))
get_preserve_attribs(fi, dest);
if(test(opt, GET_CHMOD)) {
mode_t m = rfile_getmode(fi);
m = mode_adjust(m, cmod);
if(chmod(dest, m) != 0)
perror(dest);
}
if(test(opt, GET_CHGRP)) {
if(chown(dest, -1, group_change) != 0)
perror(dest);
}
if(test(opt, GET_DELETE_AFTER)) {
bool dodel = false;
char* sp = shortpath(fi->path, 42, ftp->homedir);
if(!test(opt, GET_FORCE)
&& !get_delbatch && !gvSighupReceived)
{
int a = ask(ASKYES|ASKNO|ASKCANCEL|ASKALL, ASKYES,
_("Delete remote file '%s'?"), sp);
if(a == ASKALL) {
get_delbatch = true;
dodel = true;
}
else if(a == ASKCANCEL)
get_quit = true;
else if(a != ASKNO)
dodel = true;
} else
dodel = true;
if(dodel) {
ftp_unlink(fi->path);
if(ftp->code == ctComplete)
fprintf(stderr, _("%s: deleted\n"), sp);
else
fprintf(stderr, _("error deleting '%s': %s\n"),
sp, ftp_getreply(false));
}
free(sp);
}
} else {
stats_file(STATS_FAIL, 0);
ret = -1;
}
}
free(dest);
return ret;
}
static int do_scp_read(ssh_scp scp, const char* infile, FILE* fp,
getmode_t mode, ftp_transfer_func hookf)
{
time_t then = time(NULL) - 1;
ftp_set_close_handler();
if (hookf)
hookf(&ftp->ti);
ftp->ti.begin = false;
int rc = ssh_scp_pull_request(scp);
if (rc != SSH_SCP_REQUEST_NEWFILE)
{
ftp_err(_("Failed to start scp download: %s\n"),
ssh_get_error(ftp->session));
ssh_scp_close(scp);
ssh_scp_free(scp);
return -1;
}
size_t size = ssh_scp_request_get_size(scp);
ssh_scp_accept_request(scp);
/* read file */
char buffer[SSH_BUFSIZ];
int r = 0;
while (size && (r = ssh_scp_read(scp, buffer, MIN(SSH_BUFSIZ, size))) != SSH_ERROR)
{
if (ftp_sigints() > 0)
{
ftp_trace("break due to sigint\n");
break;
}
errno = 0;
if (fwrite(buffer, r, 1, fp) != 1)
{
ftp_err(_("Error while writing to file: %s\n"), strerror(errno));
ssh_scp_close(scp);
ssh_scp_free(scp);
return -1;
}
ftp->ti.size += r;
if (hookf)
{
time_t now = time(NULL);
if (now > then)
{
hookf(&ftp->ti);
then = now;
}
}
size -= r;
}
if (r == SSH_ERROR)
{
ftp_err(_("Error while reading from file: %s\n"), ssh_get_error(ftp->session));
r = -1;
}
else
{
r = ssh_scp_pull_request(scp);
if (r != SSH_SCP_REQUEST_EOF)
ftp_err(_("Unexpected request: %s %lu\n"), ssh_get_error(ftp->session), size);
else
r = 0;
}
ssh_scp_close(scp);
ssh_scp_free(scp);
return r;
}
static int do_read(const char* infile, FILE* fp, getmode_t mode,
ftp_transfer_func hookf, uint64_t offset)
{
if (gvSSHTrySCP && !offset)
{
char* escaped = bash_backslash_quote(infile);
/* try to set up a scp connection */
ssh_scp scp = ssh_scp_new(ftp->session, SSH_SCP_READ, escaped);
free(escaped);
if (scp != NULL)
{
int rc = ssh_scp_init(scp);
if (rc == SSH_OK)
return do_scp_read(scp, infile, fp, mode, hookf);
ssh_scp_free(scp);
}
}
time_t then = time(NULL) - 1;
ftp_set_close_handler();
if (hookf)
hookf(&ftp->ti);
ftp->ti.begin = false;
/* check if remote file is not a directory */
sftp_attributes attrib = sftp_stat(ftp->sftp_session, infile);
if (!attrib)
return -1;
if (S_ISDIR(attrib->permissions))
{
ftp_err(_("Cannot download a directory: %s\n"), infile);
sftp_attributes_free(attrib);
return -1;
}
sftp_attributes_free(attrib);
/* open remote file */
sftp_file file = sftp_open(ftp->sftp_session, infile, O_RDONLY, 0);
if (!file)
{
ftp_err(_("Cannot open file for reading: %s\n"), ssh_get_error(ftp->session));
return -1;
}
/* seek to offset */
int r = sftp_seek64(file, offset);
if (r != SSH_OK)
{
ftp_err(_("Failed to seek: %s\n"), ssh_get_error(ftp->session));
sftp_close(file);
return -1;
}
/* read file */
char buffer[SSH_BUFSIZ];
ssize_t nbytes = 0;
while ((nbytes = sftp_read(file, buffer, sizeof(buffer))) > 0)
{
if (ftp_sigints() > 0)
{
ftp_trace("break due to sigint\n");
break;
}
errno = 0;
if (fwrite(buffer, nbytes, 1, fp) != 1)
{
ftp_err(_("Error while writing to file: %s\n"), strerror(errno));
ftp->ti.ioerror = true;
sftp_close(file);
return -1;
}
ftp->ti.size += nbytes;
if (hookf)
{
time_t now = time(NULL);
if (now > then)
{
hookf(&ftp->ti);
then = now;
}
}
}
if (nbytes < 0)
{
ftp_err(_("Error while reading from file: %s\n"), ssh_get_error(ftp->session));
r = -1;
}
sftp_close(file);
return r;
}
static int do_scp_write(ssh_scp scp, const char* path, FILE* fp,
ftp_transfer_func hookf)
{
time_t then = time(NULL) - 1;
ftp_set_close_handler();
if (hookf)
hookf(&ftp->ti);
ftp->ti.begin = false;
struct stat sb;
errno = 0;
if (fstat(fileno(fp), &sb) == -1)
{
ftp_err(_("Couldn't fstat local file: %s\n"), strerror(errno));
ssh_scp_free(scp);
return -1;
}
int rc = ssh_scp_push_file(scp, path, sb.st_size, sb.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO));
if (rc != SSH_OK)
{
ftp_err(_("Failed to start scp upload: %s\n"),
ssh_get_error(ftp->session));
ssh_scp_close(scp);
ssh_scp_free(scp);
return -1;
}
/* read file */
char buffer[SSH_BUFSIZ];
ssize_t nbytes = 0;
errno = 0;
while ((nbytes = fread(buffer, sizeof(char), sizeof(buffer), fp)) > 0)
{
if (ftp_sigints() > 0)
{
ftp_trace("break due to sigint\n");
break;
}
rc = ssh_scp_write(scp, buffer, nbytes);
if (rc != SSH_OK)
{
ftp_err(_("Error while writing to file: %s\n"), ssh_get_error(ftp->session));
ssh_scp_close(scp);
ssh_scp_free(scp);
return -1;
}
ftp->ti.size += nbytes;
if (hookf)
{
time_t now = time(NULL);
if (now > then)
{
hookf(&ftp->ti);
then = now;
}
}
errno = 0;
}
if (ferror(fp))
{
ftp_err(_("Failed to read from file: %s\n"), strerror(errno));
rc = -1;
}
ssh_scp_close(scp);
ssh_scp_free(scp);
return rc;
}
static int do_write(const char* path, FILE* fp, ftp_transfer_func hookf,
uint64_t offset)
{
/* try to set up a scp connection */
if (gvSSHTrySCP && !offset)
{
ssh_scp scp = ssh_scp_new(ftp->session, SSH_SCP_WRITE, path);
if (scp != NULL)
{
int rc = ssh_scp_init(scp);
if (rc == SSH_OK)
return do_scp_write(scp, path, fp, hookf);
ssh_scp_free(scp);
}
}
time_t then = time(NULL) - 1;
ftp_set_close_handler();
if (hookf)
hookf(&ftp->ti);
ftp->ti.begin = false;
struct stat sb;
errno = 0;
if (fstat(fileno(fp), &sb) == -1)
{
ftp_err(_("Couldn't fstat local file: %s\n"), strerror(errno));
return -1;
}
/* open remote file */
sftp_file file = sftp_open(ftp->sftp_session, path, O_WRONLY | O_CREAT |
(offset == 0u ? O_TRUNC : 0), sb.st_mode);
if (!file)
{
ftp_err(_("Cannot open file for writing: %s\n"), ssh_get_error(ftp->session));
return -1;
}
/* seek to offset */
int r = sftp_seek64(file, offset);
if (r != SSH_OK)
{
ftp_err(_("Failed to seek: %s\n"), ssh_get_error(ftp->session));
sftp_close(file);
return -1;
}
/* read file */
char buffer[SSH_BUFSIZ];
ssize_t nbytes = 0;
errno = 0;
while ((nbytes = fread(buffer, sizeof(char), sizeof(buffer), fp)) > 0)
{
if (ftp_sigints() > 0)
{
ftp_trace("break due to sigint\n");
break;
}
ssize_t nwritten = sftp_write(file, buffer, nbytes);
if (nwritten != nbytes)
{
ftp_err(_("Error while writing to file: %s\n"), ssh_get_error(ftp->session));
sftp_close(file);
return -1;
}
ftp->ti.size += nbytes;
if (hookf)
{
time_t now = time(NULL);
if (now > then)
{
hookf(&ftp->ti);
then = now;
}
}
errno = 0;
}
if (ferror(fp))
{
ftp_err(_("Failed to read from file: %s\n"), strerror(errno));
r = -1;
}
sftp_close(file);
return r;
}
