moparisthebest/curl
1
0
Fork 0
mirror of https://github.com/moparisthebest/curl synced 2024-12-22 08:08:50 -05:00
Code Issues Releases Wiki Activity

FTP: Make EPSV use the control IP address rather than the original host.

Browse Source 
This ensures an alternate address is not used.
Does not apply to proxy tunnel.
This commit is contained in:
Patrick Monnerat 2015-05-08 13:55:15 +02:00
parent 5bf472fd39
commit 3377e692ee
1 changed files with 26 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

24
lib/ftp.c
View File

@ -1906,6 +1906,22 @@ static CURLcode proxy_magic(struct connectdata *conn,
return result; return result;
} }
static char *control_address(struct connectdata *conn)
{
/* Returns the control connection IP address.
If a proxy tunnel is used, returns the original host name instead, because
the effective control connection address is the proxy address,
not the ftp host. */
if(conn->bits.tunnel_proxy ||
conn->proxytype == CURLPROXY_SOCKS5 ||
conn->proxytype == CURLPROXY_SOCKS5_HOSTNAME ||
conn->proxytype == CURLPROXY_SOCKS4 ||
conn->proxytype == CURLPROXY_SOCKS4A)
return conn->host.name;
return conn->ip_addr_str;
}
static CURLcode ftp_state_pasv_resp(struct connectdata *conn, static CURLcode ftp_state_pasv_resp(struct connectdata *conn,
int ftpcode) int ftpcode)
{ {
@ -1951,9 +1967,7 @@ static CURLcode ftp_state_pasv_resp(struct connectdata *conn,
} }
if(ptr) { if(ptr) {
ftpc->newport = (unsigned short)(num & 0xffff); ftpc->newport = (unsigned short)(num & 0xffff);
ftpc->newhost = strdup(control_address(conn));
/* use the original host name again */
ftpc->newhost = strdup(conn->host.name);
if(!ftpc->newhost) if(!ftpc->newhost)
return CURLE_OUT_OF_MEMORY; return CURLE_OUT_OF_MEMORY;
} }
@ -2001,9 +2015,7 @@ static CURLcode ftp_state_pasv_resp(struct connectdata *conn,
infof(data, "Skip %d.%d.%d.%d for data connection, re-use %s instead\n", infof(data, "Skip %d.%d.%d.%d for data connection, re-use %s instead\n",
ip[0], ip[1], ip[2], ip[3], ip[0], ip[1], ip[2], ip[3],
conn->host.name); conn->host.name);
ftpc->newhost = strdup(control_address(conn));
/* use the original host name again */
ftpc->newhost = strdup(conn->host.name);
} }
else else
ftpc->newhost = aprintf("%d.%d.%d.%d", ip[0], ip[1], ip[2], ip[3]); ftpc->newhost = aprintf("%d.%d.%d.%d", ip[0], ip[1], ip[2], ip[3]);