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ftpgetput: preparations for ESPV support, no code changes

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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2018-02-04 18:49:31 +01:00
parent 565af23222
commit daa643205f
1 changed files with 16 additions and 15 deletions
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31
networking/ftpgetput.c
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@ -174,24 +174,25 @@ For example, vsftp happily answers
TODO2: need to stop ignoring IP address in PASV response.
*/
//if (ftpcmd("EPSV", NULL) != 229) {
if (ftpcmd("PASV", NULL) != 227) {
ftp_die("PASV");
}
if (ftpcmd("PASV", NULL) != 227) {
ftp_die("PASV");
}
/* Response is "NNN garbageN1,N2,N3,N4,P1,P2[)garbage]
* Server's IP is N1.N2.N3.N4 (we ignore it)
* Server's port for data connection is P1*256+P2 */
buf_ptr = strrchr(buf, ')');
if (buf_ptr) *buf_ptr = '\0';
/* Response is "NNN garbageN1,N2,N3,N4,P1,P2[)garbage]
* Server's IP is N1.N2.N3.N4 (we ignore it)
* Server's port for data connection is P1*256+P2 */
buf_ptr = strrchr(buf, ')');
if (buf_ptr) *buf_ptr = '\0';
buf_ptr = strrchr(buf, ',');
*buf_ptr = '\0';
port_num = xatoul_range(buf_ptr + 1, 0, 255);
buf_ptr = strrchr(buf, ',');
*buf_ptr = '\0';
port_num = xatoul_range(buf_ptr + 1, 0, 255);
buf_ptr = strrchr(buf, ',');
*buf_ptr = '\0';
port_num += xatoul_range(buf_ptr + 1, 0, 255) * 256;
buf_ptr = strrchr(buf, ',');
*buf_ptr = '\0';
port_num += xatoul_range(buf_ptr + 1, 0, 255) * 256;
//}
set_nport(&lsa->u.sa, htons(port_num));
return xconnect_stream(lsa);