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ftp: code shrink

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text    data     bss     dec     hex filename
 809078     476    7864  817418   c790a busybox_old
 808590     476    7864  816930   c7722 busybox_unstripped
This commit is contained in:
Denis Vlasenko
2009-03-09 04:13:59 +00:00
parent 9e95920efd
commit f1a11b5a4e
1 changed files with 119 additions and 132 deletions
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233
networking/ftpd.c
View File

@@ -17,49 +17,52 @@
#include <syslog.h> #include <syslog.h>
#include <netinet/tcp.h> #include <netinet/tcp.h>
#define FTP_DATACONN 150
#define FTP_NOOPOK 200
#define FTP_TYPEOK 200
#define FTP_PORTOK 200
#define FTP_STRUOK 200
#define FTP_MODEOK 200
#define FTP_ALLOOK 202
#define FTP_STATOK 211
#define FTP_STATFILE_OK 213
#define FTP_HELP 214
#define FTP_SYSTOK 215
#define FTP_GREET 220
#define FTP_GOODBYE 221
#define FTP_TRANSFEROK 226
#define FTP_PASVOK 227
#define FTP_LOGINOK 230
#define FTP_CWDOK 250
#define FTP_RMDIROK 250
#define FTP_DELEOK 250
#define FTP_RENAMEOK 250
#define FTP_PWDOK 257
#define FTP_MKDIROK 257
#define FTP_GIVEPWORD 331
#define FTP_RESTOK 350
#define FTP_RNFROK 350
#define FTP_BADSENDCONN 425
#define FTP_BADSENDNET 426
#define FTP_BADSENDFILE 451
#define FTP_BADCMD 500
#define FTP_COMMANDNOTIMPL 502
#define FTP_NEEDUSER 503
#define FTP_NEEDRNFR 503
#define FTP_BADSTRU 504
#define FTP_BADMODE 504
#define FTP_LOGINERR 530
#define FTP_FILEFAIL 550
#define FTP_NOPERM 550
#define FTP_UPLOADFAIL 553
#define STR1(s) #s
#define STR(s) STR1(s)
enum { enum {
OPT_v = (1 << 0), OPT_v = (1 << 0),
OPT_w = (1 << 1), OPT_w = (1 << 1),
FTP_DATACONN = 150,
FTP_NOOPOK = 200,
FTP_TYPEOK = 200,
FTP_PORTOK = 200,
FTP_STRUOK = 200,
FTP_MODEOK = 200,
FTP_ALLOOK = 202,
FTP_STATOK = 211,
FTP_STATFILE_OK = 213,
FTP_HELP = 214,
FTP_SYSTOK = 215,
FTP_GREET = 220,
FTP_GOODBYE = 221,
FTP_TRANSFEROK = 226,
FTP_PASVOK = 227,
FTP_LOGINOK = 230,
FTP_CWDOK = 250,
FTP_RMDIROK = 250,
FTP_DELEOK = 250,
FTP_RENAMEOK = 250,
FTP_PWDOK = 257,
FTP_MKDIROK = 257,
FTP_GIVEPWORD = 331,
FTP_RESTOK = 350,
FTP_RNFROK = 350,
FTP_BADSENDCONN = 425,
FTP_BADSENDNET = 426,
FTP_BADSENDFILE = 451,
FTP_BADCMD = 500,
FTP_COMMANDNOTIMPL = 502,
FTP_NEEDUSER = 503,
FTP_NEEDRNFR = 503,
FTP_BADSTRU = 504,
FTP_BADMODE = 504,
FTP_LOGINERR = 530,
FTP_FILEFAIL = 550,
FTP_NOPERM = 550,
FTP_UPLOADFAIL = 553,
#define mk_const4(a,b,c,d) (((a * 0x100 + b) * 0x100 + c) * 0x100 + d) #define mk_const4(a,b,c,d) (((a * 0x100 + b) * 0x100 + c) * 0x100 + d)
#define mk_const3(a,b,c) ((a * 0x100 + b) * 0x100 + c) #define mk_const3(a,b,c) ((a * 0x100 + b) * 0x100 + c)
const_ALLO = mk_const4('A', 'L', 'L', 'O'), const_ALLO = mk_const4('A', 'L', 'L', 'O'),
@@ -158,7 +161,7 @@ replace_char(char *str, char from, char to)
} }
static void static void
ftp_write_str_common(unsigned status, const char *str, char sep) cmdio_write(unsigned status, const char *str)
{ {
char *escaped_str, *response; char *escaped_str, *response;
int len; int len;
@@ -167,7 +170,7 @@ ftp_write_str_common(unsigned status, const char *str, char sep)
* In telnet, 0xff is an escape char, and needs to be escaped: */ * In telnet, 0xff is an escape char, and needs to be escaped: */
escaped_str = replace_text(str, '\xff', "\xff\xff"); escaped_str = replace_text(str, '\xff', "\xff\xff");
response = xasprintf("%u%c%s\r", status, sep, escaped_str); response = xasprintf("%u%s\r", status, escaped_str);
free(escaped_str); free(escaped_str);
/* ?! does FTP send embedded LFs as NULs? wow */ /* ?! does FTP send embedded LFs as NULs? wow */
@@ -175,32 +178,27 @@ ftp_write_str_common(unsigned status, const char *str, char sep)
replace_char(response, '\n', '\0'); replace_char(response, '\n', '\0');
response[len++] = '\n'; /* tack on trailing '\n' */ response[len++] = '\n'; /* tack on trailing '\n' */
xwrite(STDIN_FILENO, response, len); xwrite(STDOUT_FILENO, response, len);
free(response); free(response);
} }
static void
cmdio_write(int status, const char *p_text)
{
ftp_write_str_common(status, p_text, ' ');
}
static void static void
cmdio_write_ok(int status) cmdio_write_ok(int status)
{ {
ftp_write_str_common(status, "Operation successful", ' '); fdprintf(STDOUT_FILENO, "%u Operation successful\r\n", status);
} }
/* TODO: output strerr(errno) if errno != 0? */
static void static void
cmdio_write_hyphen(int status, const char *p_text) cmdio_write_error(int status)
{ {
ftp_write_str_common(status, p_text, '-'); fdprintf(STDOUT_FILENO, "%u Error\r\n", status);
} }
static void static void
cmdio_write_raw(const char *p_text) cmdio_write_raw(const char *p_text)
{ {
xwrite_str(STDIN_FILENO, p_text); xwrite_str(STDOUT_FILENO, p_text);
} }
/* Simple commands */ /* Simple commands */
@@ -227,7 +225,7 @@ static void
handle_cwd(void) handle_cwd(void)
{ {
if (!G.ftp_arg || chdir(G.ftp_arg) != 0) { if (!G.ftp_arg || chdir(G.ftp_arg) != 0) {
cmdio_write(FTP_FILEFAIL, "Can't change directory"); cmdio_write_error(FTP_FILEFAIL);
return; return;
} }
cmdio_write_ok(FTP_CWDOK); cmdio_write_ok(FTP_CWDOK);
@@ -240,41 +238,40 @@ handle_cdup(void)
handle_cwd(); handle_cwd();
} }
static void //static void
handle_type(void) //handle_type(void)
{ //{
if (G.ftp_arg // if (G.ftp_arg
&& ( ((G.ftp_arg[0] | 0x20) == 'i' && G.ftp_arg[1] == '\0') // && ( ((G.ftp_arg[0] | 0x20) == 'i' && G.ftp_arg[1] == '\0')
|| !strcasecmp(G.ftp_arg, "L8") // || !strcasecmp(G.ftp_arg, "L8")
|| !strcasecmp(G.ftp_arg, "L 8") // || !strcasecmp(G.ftp_arg, "L 8")
) // )
) { // ) {
cmdio_write_ok(FTP_TYPEOK); // cmdio_write_ok(FTP_TYPEOK);
} else { // } else {
cmdio_write(FTP_BADCMD, "Unrecognised TYPE command"); // cmdio_write_error(FTP_BADCMD);
} // }
} //}
static void static void
handle_stat(void) handle_stat(void)
{ {
cmdio_write_hyphen(FTP_STATOK, "FTP server status:"); cmdio_write_raw(STR(FTP_STATOK)"-FTP server status:\r\n"
cmdio_write_raw(" TYPE: BINARY\r\n"); "TYPE: BINARY\r\n"
cmdio_write_ok(FTP_STATOK); STR(FTP_STATOK)" Ok\r\n");
} }
static void static void
handle_help(void) handle_help(void)
{ {
cmdio_write_hyphen(FTP_HELP, "Recognized commands:"); cmdio_write_raw(STR(FTP_HELP)"-Commands:\r\n"
cmdio_write_raw(" ALLO CDUP CWD HELP LIST\r\n" "ALLO CDUP CWD HELP LIST\r\n"
"MODE NLST NOOP PASS PASV PORT PWD QUIT\r\n" "MODE NLST NOOP PASS PASV PORT PWD QUIT\r\n"
"REST RETR STAT STRU SYST TYPE USER\r\n" "REST RETR STAT STRU SYST TYPE USER\r\n"
#if ENABLE_FEATURE_FTP_WRITE #if ENABLE_FEATURE_FTP_WRITE
"APPE DELE MKD RMD RNFR RNTO STOR STOU\r\n" "APPE DELE MKD RMD RNFR RNTO STOR STOU\r\n"
#endif #endif
); STR(FTP_HELP)" Ok\r\n");
cmdio_write(FTP_HELP, "Help OK");
} }
/* Download commands */ /* Download commands */
@@ -302,7 +299,7 @@ ftpdataio_get_pasv_fd(void)
remote_fd = accept(G.pasv_listen_fd, NULL, 0); remote_fd = accept(G.pasv_listen_fd, NULL, 0);
if (remote_fd < 0) { if (remote_fd < 0) {
cmdio_write(FTP_BADSENDCONN, "Can't establish connection"); cmdio_write_error(FTP_BADSENDCONN);
return remote_fd; return remote_fd;
} }
@@ -372,7 +369,7 @@ static int
data_transfer_checks_ok(void) data_transfer_checks_ok(void)
{ {
if (!pasv_active() && !port_active()) { if (!pasv_active() && !port_active()) {
cmdio_write(FTP_BADSENDCONN, "Use PORT or PASV first"); cmdio_write_raw(STR(FTP_BADSENDCONN)" Use PORT or PASV first\r\n");
return 0; return 0;
} }
@@ -466,7 +463,7 @@ handle_port(void)
if (lsa == NULL) { if (lsa == NULL) {
bail: bail:
cmdio_write(FTP_BADCMD, "Illegal PORT command"); cmdio_write_error(FTP_BADCMD);
return; return;
} }
@@ -500,14 +497,14 @@ handle_retr(void)
/* O_NONBLOCK is useful if file happens to be a device node */ /* O_NONBLOCK is useful if file happens to be a device node */
opened_file = G.ftp_arg ? open(G.ftp_arg, O_RDONLY | O_NONBLOCK) : -1; opened_file = G.ftp_arg ? open(G.ftp_arg, O_RDONLY | O_NONBLOCK) : -1;
if (opened_file < 0) { if (opened_file < 0) {
cmdio_write(FTP_FILEFAIL, "Can't open file"); cmdio_write_error(FTP_FILEFAIL);
return; return;
} }
retval = fstat(opened_file, &statbuf); retval = fstat(opened_file, &statbuf);
if (retval < 0 || !S_ISREG(statbuf.st_mode)) { if (retval < 0 || !S_ISREG(statbuf.st_mode)) {
/* Note - pretend open failed */ /* Note - pretend open failed */
cmdio_write(FTP_FILEFAIL, "Can't open file"); cmdio_write_error(FTP_FILEFAIL);
goto file_close_out; goto file_close_out;
} }
@@ -531,7 +528,7 @@ handle_retr(void)
trans_ret = bb_copyfd_eof(opened_file, remote_fd); trans_ret = bb_copyfd_eof(opened_file, remote_fd);
ftpdataio_dispose_transfer_fd(); ftpdataio_dispose_transfer_fd();
if (trans_ret < 0) if (trans_ret < 0)
cmdio_write(FTP_BADSENDFILE, "Error sending local file"); cmdio_write_error(FTP_BADSENDFILE);
else else
cmdio_write_ok(FTP_TRANSFEROK); cmdio_write_ok(FTP_TRANSFEROK);
@@ -681,7 +678,7 @@ handle_dir_common(int full_details, int stat_cmd)
if (stat_cmd) { if (stat_cmd) {
fd = STDIN_FILENO; fd = STDIN_FILENO;
cmdio_write_hyphen(FTP_STATFILE_OK, "Status follows:"); cmdio_write_raw(STR(FTP_STATFILE_OK)"-Status follows:\r\n");
} else { } else {
fd = get_remote_transfer_fd(" Here comes the directory listing"); fd = get_remote_transfer_fd(" Here comes the directory listing");
if (fd < 0) if (fd < 0)
@@ -735,7 +732,7 @@ static void
handle_mkd(void) handle_mkd(void)
{ {
if (!G.ftp_arg || mkdir(G.ftp_arg, 0777) != 0) { if (!G.ftp_arg || mkdir(G.ftp_arg, 0777) != 0) {
cmdio_write(FTP_FILEFAIL, "Create directory operation failed"); cmdio_write_error(FTP_FILEFAIL);
return; return;
} }
cmdio_write_ok(FTP_MKDIROK); cmdio_write_ok(FTP_MKDIROK);
@@ -745,7 +742,7 @@ static void
handle_rmd(void) handle_rmd(void)
{ {
if (!G.ftp_arg || rmdir(G.ftp_arg) != 0) { if (!G.ftp_arg || rmdir(G.ftp_arg) != 0) {
cmdio_write(FTP_FILEFAIL, "Deletion failed"); cmdio_write_error(FTP_FILEFAIL);
return; return;
} }
cmdio_write_ok(FTP_RMDIROK); cmdio_write_ok(FTP_RMDIROK);
@@ -755,7 +752,7 @@ static void
handle_dele(void) handle_dele(void)
{ {
if (!G.ftp_arg || unlink(G.ftp_arg) != 0) { if (!G.ftp_arg || unlink(G.ftp_arg) != 0) {
cmdio_write(FTP_FILEFAIL, "Deletion failed"); cmdio_write_error(FTP_FILEFAIL);
return; return;
} }
cmdio_write_ok(FTP_DELEOK); cmdio_write_ok(FTP_DELEOK);
@@ -764,19 +761,7 @@ handle_dele(void)
static void static void
handle_rnfr(void) handle_rnfr(void)
{ {
struct stat statbuf;
/* Clear old value */
free(G.rnfr_filename); free(G.rnfr_filename);
G.rnfr_filename = NULL;
if (!G.ftp_arg
|| stat(G.ftp_arg, &statbuf) != 0
/* || it isn't a regular file or a directory? */
) {
cmdio_write(FTP_FILEFAIL, "RNFR command failed");
return;
}
G.rnfr_filename = xstrdup(G.ftp_arg); G.rnfr_filename = xstrdup(G.ftp_arg);
cmdio_write_ok(FTP_RNFROK); cmdio_write_ok(FTP_RNFROK);
} }
@@ -788,7 +773,7 @@ handle_rnto(void)
/* If we didn't get a RNFR, throw a wobbly */ /* If we didn't get a RNFR, throw a wobbly */
if (G.rnfr_filename == NULL || G.ftp_arg == NULL) { if (G.rnfr_filename == NULL || G.ftp_arg == NULL) {
cmdio_write(FTP_NEEDRNFR, "RNFR required first"); cmdio_write_raw(STR(FTP_NEEDRNFR)" RNFR required first\r\n");
return; return;
} }
@@ -797,7 +782,7 @@ handle_rnto(void)
G.rnfr_filename = NULL; G.rnfr_filename = NULL;
if (retval) { if (retval) {
cmdio_write(FTP_FILEFAIL, "Rename failed"); cmdio_write_error(FTP_FILEFAIL);
return; return;
} }
cmdio_write_ok(FTP_RENAMEOK); cmdio_write_ok(FTP_RENAMEOK);
@@ -821,7 +806,7 @@ handle_upload_common(int is_append, int is_unique)
local_file_fd = -1; local_file_fd = -1;
if (is_unique) { if (is_unique) {
tempname = xstrdup(" FILE: uniq.XXXXXX"); tempname = xstrdup(" FILE: uniq.XXXXXX");
local_file_fd = mkstemp(tempname + 6); local_file_fd = mkstemp(tempname + 7);
} else if (G.ftp_arg) { } else if (G.ftp_arg) {
int flags = O_WRONLY | O_CREAT | O_TRUNC; int flags = O_WRONLY | O_CREAT | O_TRUNC;
if (is_append) if (is_append)
@@ -831,7 +816,7 @@ handle_upload_common(int is_append, int is_unique)
local_file_fd = open(G.ftp_arg, flags, 0666); local_file_fd = open(G.ftp_arg, flags, 0666);
} }
if (local_file_fd < 0) { if (local_file_fd < 0) {
cmdio_write(FTP_UPLOADFAIL, "Can't create file"); cmdio_write_error(FTP_UPLOADFAIL);
return; return;
} }
@@ -850,7 +835,7 @@ handle_upload_common(int is_append, int is_unique)
ftpdataio_dispose_transfer_fd(); ftpdataio_dispose_transfer_fd();
if (trans_ret < 0) if (trans_ret < 0)
cmdio_write(FTP_BADSENDFILE, "Failure writing to local file"); cmdio_write_error(FTP_BADSENDFILE);
else else
cmdio_write_ok(FTP_TRANSFEROK); cmdio_write_ok(FTP_TRANSFEROK);
@@ -949,7 +934,7 @@ int ftpd_main(int argc UNUSED_PARAM, char **argv)
setsockopt(STDIN_FILENO, SOL_SOCKET, SO_KEEPALIVE, &const_int_1, sizeof(const_int_1)); setsockopt(STDIN_FILENO, SOL_SOCKET, SO_KEEPALIVE, &const_int_1, sizeof(const_int_1));
setsockopt(STDIN_FILENO, SOL_SOCKET, SO_OOBINLINE, &const_int_1, sizeof(const_int_1)); setsockopt(STDIN_FILENO, SOL_SOCKET, SO_OOBINLINE, &const_int_1, sizeof(const_int_1));
cmdio_write(FTP_GREET, "Welcome"); cmdio_write_raw(STR(FTP_GREET)" Welcome\r\n");
#ifdef IF_WE_WANT_TO_REQUIRE_LOGIN #ifdef IF_WE_WANT_TO_REQUIRE_LOGIN
{ {
@@ -959,20 +944,20 @@ int ftpd_main(int argc UNUSED_PARAM, char **argv)
if (cmdval == const_USER) { if (cmdval == const_USER) {
if (G.ftp_arg == NULL || strcasecmp(G.ftp_arg, "anonymous") != 0) if (G.ftp_arg == NULL || strcasecmp(G.ftp_arg, "anonymous") != 0)
cmdio_write(FTP_LOGINERR, "Server is anonymous only"); cmdio_write_raw(STR(FTP_LOGINERR)" Server is anonymous only\r\n");
else { else {
user_was_specified = 1; user_was_specified = 1;
cmdio_write(FTP_GIVEPWORD, "Please specify the password"); cmdio_write_raw(STR(FTP_GIVEPWORD)" Please specify the password\r\n");
} }
} else if (cmdval == const_PASS) { } else if (cmdval == const_PASS) {
if (user_was_specified) if (user_was_specified)
break; break;
cmdio_write(FTP_NEEDUSER, "Login with USER"); cmdio_write_raw(STR(FTP_NEEDUSER)" Login with USER\r\n");
} else if (cmdval == const_QUIT) { } else if (cmdval == const_QUIT) {
cmdio_write(FTP_GOODBYE, "Goodbye"); cmdio_write_raw(STR(FTP_GOODBYE)" Goodbye\r\n");
return 0; return 0;
} else { } else {
cmdio_write(FTP_LOGINERR, "Login with USER and PASS"); cmdio_write_raw(STR(FTP_LOGINERR)" Login with USER and PASS\r\n");
} }
} }
} }
@@ -1021,7 +1006,7 @@ int ftpd_main(int argc UNUSED_PARAM, char **argv)
uint32_t cmdval = cmdio_get_cmd_and_arg(); uint32_t cmdval = cmdio_get_cmd_and_arg();
if (cmdval == const_QUIT) { if (cmdval == const_QUIT) {
cmdio_write(FTP_GOODBYE, "Goodbye"); cmdio_write_raw(STR(FTP_GOODBYE)" Goodbye\r\n");
return 0; return 0;
} }
if (cmdval == const_PWD) if (cmdval == const_PWD)
@@ -1037,13 +1022,14 @@ int ftpd_main(int argc UNUSED_PARAM, char **argv)
else if (cmdval == const_NOOP) else if (cmdval == const_NOOP)
cmdio_write_ok(FTP_NOOPOK); cmdio_write_ok(FTP_NOOPOK);
else if (cmdval == const_SYST) else if (cmdval == const_SYST)
cmdio_write(FTP_SYSTOK, "UNIX Type: L8"); cmdio_write_raw(STR(FTP_SYSTOK)" UNIX Type: L8\r\n");
else if (cmdval == const_HELP) else if (cmdval == const_HELP)
handle_help(); handle_help();
else if (cmdval == const_LIST) /* ls -l */ else if (cmdval == const_LIST) /* ls -l */
handle_list(); handle_list();
else if (cmdval == const_TYPE) else if (cmdval == const_TYPE)
handle_type(); //handle_type();
cmdio_write_ok(FTP_TYPEOK);
else if (cmdval == const_PORT) else if (cmdval == const_PORT)
handle_port(); handle_port();
else if (cmdval == const_REST) else if (cmdval == const_REST)
@@ -1055,20 +1041,20 @@ int ftpd_main(int argc UNUSED_PARAM, char **argv)
// && (G.ftp_arg[0] | 0x20) == 'f' // && (G.ftp_arg[0] | 0x20) == 'f'
// && G.ftp_arg[1] == '\0' // && G.ftp_arg[1] == '\0'
//) { //) {
cmdio_write(FTP_STRUOK, "Command ignored"); cmdio_write_ok(FTP_STRUOK);
//} else //} else
// cmdio_write(FTP_BADSTRU, "Bad STRU command"); // cmdio_write_raw(STR(FTP_BADSTRU)" Bad STRU command\r\n");
} else if (cmdval == const_MODE) { } else if (cmdval == const_MODE) {
//if (G.ftp_arg //if (G.ftp_arg
// && (G.ftp_arg[0] | 0x20) == 's' // && (G.ftp_arg[0] | 0x20) == 's'
// && G.ftp_arg[1] == '\0' // && G.ftp_arg[1] == '\0'
//) { //) {
cmdio_write(FTP_MODEOK, "Command ignored"); cmdio_write_ok(FTP_MODEOK);
//} else //} else
// cmdio_write(FTP_BADMODE, "Bad MODE command"); // cmdio_write_raw(STR(FTP_BADMODE)" Bad MODE command\r\n");
} }
else if (cmdval == const_ALLO) else if (cmdval == const_ALLO)
cmdio_write(FTP_ALLOOK, "Command ignored"); cmdio_write_ok(FTP_ALLOOK);
else if (cmdval == const_STAT) { else if (cmdval == const_STAT) {
if (G.ftp_arg == NULL) if (G.ftp_arg == NULL)
handle_stat(); handle_stat();
@@ -1076,10 +1062,10 @@ int ftpd_main(int argc UNUSED_PARAM, char **argv)
handle_stat_file(); handle_stat_file();
} else if (cmdval == const_USER) { } else if (cmdval == const_USER) {
/* FTP_LOGINERR confuses clients: */ /* FTP_LOGINERR confuses clients: */
/* cmdio_write(FTP_LOGINERR, "Can't change to another user"); */ /* cmdio_write_raw(STR(FTP_LOGINERR)" Can't change to another user\r\n"); */
cmdio_write(FTP_GIVEPWORD, "Command ignored"); cmdio_write_ok(FTP_GIVEPWORD);
} else if (cmdval == const_PASS) } else if (cmdval == const_PASS)
cmdio_write(FTP_LOGINOK, "Command ignored"); cmdio_write_ok(FTP_LOGINOK);
#if ENABLE_FEATURE_FTP_WRITE #if ENABLE_FEATURE_FTP_WRITE
else if (G.opts & OPT_w) { else if (G.opts & OPT_w) {
if (cmdval == const_STOR) if (cmdval == const_STOR)
@@ -1110,17 +1096,18 @@ int ftpd_main(int argc UNUSED_PARAM, char **argv)
|| cmdval == const_APPE || cmdval == const_APPE
|| cmdval == const_STOU || cmdval == const_STOU
) { ) {
cmdio_write(FTP_NOPERM, "Permission denied"); cmdio_write_raw(STR(FTP_NOPERM)" Permission denied\r\n");
} }
#endif #endif
else { else {
/* Which unsupported commands were seen in the wild? /* Which unsupported commands were seen in the wild?
* (doesn't necessarily mean "we must support them") * (doesn't necessarily mean "we must support them")
* wget 1.11.4: SIZE - todo. * wget 1.11.4: SIZE - todo
* lftp 3.6.3: MDTM - works fine without it anyway. * lftp 3.6.3: FEAT - is it useful?
* IPv6-style PASV: "EPSV 2" * MDTM - works fine without it anyway
* IPv6-style PASV: "EPSV 2" - todo
*/ */
cmdio_write(FTP_BADCMD, "Unknown command"); cmdio_write_raw(STR(FTP_BADCMD)" Unknown command\r\n");
} }
} }
} }