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ftpd: instead of wordy HELP, implement useful, and smaller, FEAT.

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(HELP is still "supported" as an alias to FEAT)

   text    data     bss     dec     hex filename
 807331     468    7856  815655   c7227 busybox_old
 807246     468    7856  815570   c71d2 busybox_unstripped
This commit is contained in:
Denis Vlasenko 2009-03-17 12:40:34 +00:00
parent edb0de4283
commit 1a82555108
1 changed files with 14 additions and 15 deletions
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29
networking/ftpd.c
View File

@ -285,7 +285,7 @@ handle_stat(void)
STR(FTP_STATOK)" Ok\r\n");
}
/* TODO: implement FEAT. Example:
/* Examples of HELP and FEAT:
# nc -vvv ftp.kernel.org 21
ftp.kernel.org (130.239.17.4:21) open
220 Welcome to ftp.kernel.org.
@ -309,16 +309,14 @@ HELP
214 Help OK.
*/
static void
handle_help(void)
handle_feat(unsigned status)
{
cmdio_write_raw(STR(FTP_HELP)"-Commands:\r\n"
" ALLO CDUP CWD EPSV HELP LIST\r\n"
" MODE NLST NOOP PASS PASV PORT PWD QUIT\r\n"
" REST RETR SIZE STAT STRU SYST TYPE USER\r\n"
#if ENABLE_FEATURE_FTP_WRITE
" APPE DELE MKD RMD RNFR RNTO STOR STOU\r\n"
#endif
STR(FTP_HELP)" Ok\r\n");
cmdio_write(status, "-Features:");
cmdio_write_raw(" EPSV\r\n"
" PASV\r\n"
" REST STREAM\r\n"
" SIZE\r\n");
cmdio_write(status, " Ok");
}
/* Download commands */
@ -904,7 +902,7 @@ cmdio_get_cmd_and_arg(void)
cmd[len--] = '\0';
if (G.verbose > 1)
bb_error_msg("%s", cmd);
verbose_log(cmd);
G.ftp_arg = strchr(cmd, ' ');
if (G.ftp_arg != NULL)
@ -927,6 +925,7 @@ enum {
const_CWD = mk_const3('C', 'W', 'D'),
const_DELE = mk_const4('D', 'E', 'L', 'E'),
const_EPSV = mk_const4('E', 'P', 'S', 'V'),
const_FEAT = mk_const4('F', 'E', 'A', 'T'),
const_HELP = mk_const4('H', 'E', 'L', 'P'),
const_LIST = mk_const4('L', 'I', 'S', 'T'),
const_MKD = mk_const3('M', 'K', 'D'),
@ -1126,8 +1125,9 @@ int ftpd_main(int argc, char **argv)
handle_cwd();
else if (cmdval == const_CDUP) /* cd .. */
handle_cdup();
else if (cmdval == const_HELP)
handle_help();
/* HELP is nearly useless, but we can reuse FEAT for it */
else if (cmdval == const_HELP || cmdval == const_FEAT)
handle_feat(cmdval == const_HELP ? STRNUM32(FTP_HELP) : STRNUM32(FTP_STATOK));
else if (cmdval == const_LIST) /* ls -l */
handle_list();
else if (cmdval == const_NLST) /* "name list", bare ls */
@ -1186,8 +1186,7 @@ int ftpd_main(int argc, char **argv)
else {
/* Which unsupported commands were seen in the wild?
* (doesn't necessarily mean "we must support them")
* lftp 3.6.3: FEAT - is it useful?
* MDTM - works fine without it anyway
* lftp 3.6.3: MDTM - works fine without it anyway
*/
cmdio_write_raw(STR(FTP_BADCMD)" Unknown command\r\n");
}