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Apply old patch from me that handles client's behind NAT

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Tested by Harald Barth and bugfix by Ragnar Sundblad
This commit is contained in:
Love Hornquist Astrand
2011-12-15 22:00:00 -08:00
parent b6f3ca6712
commit a66a23bb45
1 changed files with 37 additions and 11 deletions
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48
kpasswd/kpasswdd.c
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@@ -445,7 +445,8 @@ verify (krb5_auth_context *auth_context,
struct sockaddr *sa,
int sa_size,
u_char *msg,
size_t len)
size_t len,
krb5_address *client_addr)
{
krb5_error_code ret;
uint16_t pkt_len, pkt_ver, ap_req_len;
@@ -546,6 +547,21 @@ verify (krb5_auth_context *auth_context,
krb_priv_data.data = msg + 6 + ap_req_len;
krb_priv_data.length = len - 6 - ap_req_len;
/*
* Only enforce client addresses on on tickets with addresses. If
* its addressless, we are guessing its behind NAT and really
* can't know this information.
*/
if ((*ticket)->ticket.caddr && (*ticket)->ticket.caddr->len > 0) {
ret = krb5_auth_con_setaddrs (context, *auth_context,
NULL, client_addr);
if (ret) {
krb5_warn (context, ret, "krb5_auth_con_setaddr(this)");
goto out;
}
}
ret = krb5_rd_priv (context,
*auth_context,
&krb_priv_data,
@@ -582,7 +598,7 @@ process (krb5_realm *realms,
krb5_address other_addr;
uint16_t version;
memset(&other_addr, 0, sizeof(other_addr));
krb5_data_zero (&out_data);
ret = krb5_auth_con_init (context, &auth_context);
@@ -600,18 +616,27 @@ process (krb5_realm *realms,
goto out;
}
ret = krb5_auth_con_setaddrs (context,
auth_context,
this_addr,
&other_addr);
krb5_free_address (context, &other_addr);
ret = krb5_auth_con_setaddrs (context, auth_context, this_addr, NULL);
if (ret) {
krb5_warn (context, ret, "krb5_auth_con_setaddr");
krb5_warn (context, ret, "krb5_auth_con_setaddr(this)");
goto out;
}
if (verify (&auth_context, realms, keytab, &ticket, &out_data,
&version, s, sa, sa_size, msg, len) == 0) {
&version, s, sa, sa_size, msg, len, &other_addr) == 0)
{
/*
* We always set the client_addr, to assume that the client
* can ignore it if it choose to do so (just the server does
* so for addressless tickets).
*/
ret = krb5_auth_con_setaddrs (context, auth_context,
this_addr, &other_addr);
if (ret) {
krb5_warn (context, ret, "krb5_auth_con_setaddr(other)");
goto out;
}
change (auth_context,
ticket->client,
version,
@@ -623,8 +648,9 @@ process (krb5_realm *realms,
}
out:
krb5_data_free (&out_data);
krb5_auth_con_free (context, auth_context);
krb5_free_address(context, &other_addr);
krb5_data_free(&out_data);
krb5_auth_con_free(context, auth_context);
}
static int