static void
handle_mdtm(struct vsf_session* p_sess)
{
static struct vsf_sysutil_statbuf* s_p_statbuf;
int retval;
if (!vsf_access_check_file(&p_sess->ftp_arg_str))
{
vsf_cmdio_write(p_sess, FTP_NOPERM, "Permission denied.");
return;
}
retval = str_stat(&p_sess->ftp_arg_str, &s_p_statbuf);
if (retval != 0 || !vsf_sysutil_statbuf_is_regfile(s_p_statbuf))
{
vsf_cmdio_write(p_sess, FTP_FILEFAIL,
"Could not get file modification time.");
}
else
{
static struct mystr s_mdtm_res_str;
str_alloc_text(&s_mdtm_res_str,
vsf_sysutil_statbuf_get_numeric_date(
s_p_statbuf, tunable_use_localtime));
vsf_cmdio_write_str(p_sess, FTP_MDTMOK, &s_mdtm_res_str);
}
}
static void
handle_size(struct vsf_session* p_sess)
{
/* Note - in ASCII mode, are supposed to return the size after taking into
* account ASCII linefeed conversions. At least this is what wu-ftpd does in
* version 2.6.1. Proftpd-1.2.0pre fails to do this.
* I will not do it because it is a potential I/O DoS.
*/
static struct vsf_sysutil_statbuf* s_p_statbuf;
int retval;
if (!vsf_access_check_file(&p_sess->ftp_arg_str))
{
vsf_cmdio_write(p_sess, FTP_NOPERM, "Permission denied.");
return;
}
retval = str_stat(&p_sess->ftp_arg_str, &s_p_statbuf);
if (retval != 0 || !vsf_sysutil_statbuf_is_regfile(s_p_statbuf))
{
vsf_cmdio_write(p_sess, FTP_FILEFAIL, "Could not get file size.");
}
else
{
static struct mystr s_size_res_str;
str_alloc_filesize_t(&s_size_res_str,
vsf_sysutil_statbuf_get_size(s_p_statbuf));
vsf_cmdio_write_str(p_sess, FTP_SIZEOK, &s_size_res_str);
}
}
static void
handle_rnfr(struct vsf_session* p_sess)
{
static struct vsf_sysutil_statbuf* p_statbuf;
int retval;
/* Clear old value */
str_free(&p_sess->rnfr_filename_str);
if (!vsf_access_check_file(&p_sess->ftp_arg_str))
{
vsf_cmdio_write(p_sess, FTP_NOPERM, "Permission denied.");
return;
}
/* Does it exist? */
retval = str_stat(&p_sess->ftp_arg_str, &p_statbuf);
if (retval == 0)
{
/* Yes */
str_copy(&p_sess->rnfr_filename_str, &p_sess->ftp_arg_str);
vsf_cmdio_write(p_sess, FTP_RNFROK, "Ready for RNTO.");
}
else
{
vsf_cmdio_write(p_sess, FTP_FILEFAIL, "RNFR command failed.");
}
}
static void
handle_per_user_config(const struct mystr* p_user_str)
{
struct mystr filename_str = INIT_MYSTR;
struct vsf_sysutil_statbuf* p_statbuf = 0;
struct str_locate_result loc_result;
int retval;
if (!tunable_user_config_dir)
{
return;
}
/* Security paranoia - ignore if user has a / in it. */
loc_result = str_locate_char(p_user_str, '/');
if (loc_result.found)
{
return;
}
str_alloc_text(&filename_str, tunable_user_config_dir);
str_append_char(&filename_str, '/');
str_append_str(&filename_str, p_user_str);
retval = str_stat(&filename_str, &p_statbuf);
if (!vsf_sysutil_retval_is_error(retval))
{
/* Security - file ownership check now in vsf_parseconf_load_file() */
vsf_parseconf_load_file(str_getbuf(&filename_str), 1);
}
else if (vsf_sysutil_get_error() != kVSFSysUtilErrNOENT)
{
die("error opening per-user config file");
}
str_free(&filename_str);
vsf_sysutil_free(p_statbuf);
}
static void
handle_per_user_config(const struct mystr* p_user_str)
{
struct mystr filename_str = INIT_MYSTR;
struct vsf_sysutil_statbuf* p_statbuf = 0;
struct str_locate_result loc_result;
int retval;
if (!tunable_user_config_dir)
{
return;
}
/* Security paranoia - ignore if user has a / in it. */
loc_result = str_locate_char(p_user_str, '/');
if (loc_result.found)
{
return;
}
str_alloc_text(&filename_str, tunable_user_config_dir);
str_append_char(&filename_str, '/');
str_append_str(&filename_str, p_user_str);
retval = str_stat(&filename_str, &p_statbuf);
/* Security - ignore unless owned by root */
if (!vsf_sysutil_retval_is_error(retval) &&
vsf_sysutil_statbuf_get_uid(p_statbuf) == VSFTP_ROOT_UID)
{
vsf_parseconf_load_file(str_getbuf(&filename_str), 1);
}
str_free(&filename_str);
vsf_sysutil_free(p_statbuf);
}
static void
get_unique_filename(struct mystr* p_outstr, const struct mystr* p_base_str)
{
/* Use silly wu-ftpd algorithm for compatibility */
static struct vsf_sysutil_statbuf* s_p_statbuf;
unsigned int suffix = 1;
int retval;
while (1)
{
str_copy(p_outstr, p_base_str);
str_append_char(p_outstr, '.');
str_append_ulong(p_outstr, suffix);
retval = str_stat(p_outstr, &s_p_statbuf);
if (vsf_sysutil_retval_is_error(retval))
{
return;
}
++suffix;
}
}
static void
handle_per_user_config(const struct mystr* p_user_str)
{
if (tunable_user_config_dir)
{
struct mystr filename_str = INIT_MYSTR;
struct vsf_sysutil_statbuf* p_statbuf = 0;
int retval;
str_alloc_text(&filename_str, tunable_user_config_dir);
str_append_char(&filename_str, '/');
str_append_str(&filename_str, p_user_str);
retval = str_stat(&filename_str, &p_statbuf);
/* Security - ignore unless owned by root */
if (!vsf_sysutil_retval_is_error(retval) &&
vsf_sysutil_statbuf_get_uid(p_statbuf) == VSFTP_ROOT_UID)
{
vsf_parseconf_load_file(str_getbuf(&filename_str));
}
str_free(&filename_str);
vsf_sysutil_free(p_statbuf);
}
}
