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work around broken clients that think LIST -a is a thing

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This commit is contained in:
Michael Theall 2016-01-25 19:11:53 -06:00
parent c2c82919a3
commit 4598dc52c4
1 changed files with 36 additions and 13 deletions
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43
source/ftp.c
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@ -2180,13 +2180,15 @@ typedef enum
* @param[in] session ftp session
* @param[in] args ftp arguments
* @param[in] mode transfer mode
* @param[in] workaround whether to workaround LIST -a
*
* @returns failure
*/
static int
ftp_xfer_dir(ftp_session_t *session,
const char *args,
xfer_dir_mode_t mode)
xfer_dir_mode_t mode,
bool workaround)
{
ssize_t rc;
size_t len;
@ -2212,24 +2214,45 @@ ftp_xfer_dir(ftp_session_t *session,
return ftp_send_response(session, 550, "%s\r\n", strerror(errno));
}
args = session->buffer;
/* check if this is a directory */
session->dp = opendir(args);
session->dp = opendir(session->buffer);
if(session->dp == NULL)
{
/* not a directory; check if it is a file */
rc = stat(args, &st);
rc = stat(session->buffer, &st);
if(rc != 0)
{
/* error getting stat */
rc = errno;
/* work around broken clients that think LIST -a is a thing */
if(workaround && mode == XFER_DIR_LIST)
{
if(args[0] == '-' && args[1] == 'a')
{
if(args[2] == 0)
buffer = strdup(args+2);
else
buffer = strdup(args+3);
if(buffer != NULL)
{
rc = ftp_xfer_dir(session, buffer, mode, false);
free(buffer);
return rc;
}
rc = ENOMEM;
}
}
ftp_session_set_state(session, COMMAND_STATE, CLOSE_PASV | CLOSE_DATA);
return ftp_send_response(session, 550, "%s\r\n", strerror(errno));
return ftp_send_response(session, 550, "%s\r\n", strerror(rc));
}
else
{
/* get the base name */
base = strrchr(args, '/') + 1;
base = strrchr(session->buffer, '/') + 1;
/* encode \n in path */
len = strlen(base);
@ -2561,7 +2584,7 @@ FTP_DECLARE(LIST)
console_print(CYAN "%s %s\n" RESET, __func__, args ? args : "");
/* open the path in LIST mode */
return ftp_xfer_dir(session, args, XFER_DIR_LIST);
return ftp_xfer_dir(session, args, XFER_DIR_LIST, true);
}
/*! @fn static int MDTM(ftp_session_t *session, const char *args)
@ -2675,7 +2698,7 @@ FTP_DECLARE(NLST)
console_print(CYAN "%s %s\n" RESET, __func__, args ? args : "");
/* open the path in NLST mode */
return ftp_xfer_dir(session, args, XFER_DIR_NLST);
return ftp_xfer_dir(session, args, XFER_DIR_NLST, false);
}
/*! @fn static int NOOP(ftp_session_t *session, const char *args)
@ -3244,7 +3267,7 @@ FTP_DECLARE(STAT)
}
/* argument provided, open the path in STAT mode */
return ftp_xfer_dir(session, args, XFER_DIR_STAT);
return ftp_xfer_dir(session, args, XFER_DIR_STAT, false);
}
/*! @fn static int STOR(ftp_session_t *session, const char *args)