static protocol_t *
protocol_ssl_accept(protocol_t * p, void *options)
{
protocol_t *newp;
struct sockaddr_in remote;
socklen_t addrlen;
int ret;
ssl_private_t *ssl_p = (ssl_private_t *) p->_protocol_p;
ssl_private_t *new_ssl_p;
struct sockaddr name;
char hostname[128];
flowop_options_t *flowop_options = (flowop_options_t *) options;
BIO *sbio;
newp = protocol_ssl_new();
new_ssl_p = (ssl_private_t *) newp->_protocol_p;
addrlen = (socklen_t) sizeof (remote);
uperf_debug("ssl - ssl obj waiting for accept\n");
newp->fd = accept(p->fd, (struct sockaddr *) &remote,
&addrlen);
if (newp->fd < 0) {
uperf_log_msg(UPERF_LOG_ERROR, errno, "accept");
return (NULL);
}
if (getnameinfo((const struct sockaddr *) & remote, addrlen,
hostname, sizeof (hostname), NULL, 0, 0) == 0) {
uperf_debug("ssl - Connection from %s:%d\n", hostname,
SOCK_PORT(remote));
strlcpy(newp->host, hostname, sizeof (newp->host));
newp->port = SOCK_PORT(remote);
}
if (flowop_options) {
if ((load_engine(flowop_options->engine)) == -1) {
uperf_info(
"ssl - Engine %s does NOT exist! Using the default OpenSSL softtoken",
flowop_options->engine);
}
}
sbio = BIO_new_socket(newp->fd, BIO_NOCLOSE);
if (!(new_ssl_p->ssl = SSL_new(ctx))) {
uperf_log_msg(UPERF_LOG_ERROR, 0, "SSL_new error");
return (NULL);
}
SSL_set_bio(new_ssl_p->ssl, sbio, sbio);
ret = SSL_accept(new_ssl_p->ssl);
if (my_ssl_error(new_ssl_p->ssl, ret) == 0) {
return (newp);
} else {
return (0);
}
}
static krb5_error_code
recvauth(int f,
krb5_context krb_context,
unsigned int *valid_checksum,
krb5_ticket **ticket,
int *auth_type,
krb5_principal *client,
int encr_flag,
krb5_keytab keytab)
{
krb5_error_code status = 0;
krb5_auth_context auth_context = NULL;
krb5_rcache rcache;
krb5_authenticator *authenticator;
krb5_data inbuf;
krb5_data auth_version;
*valid_checksum = 0;
if ((status = krb5_auth_con_init(krb_context, &auth_context)))
return (status);
/* Only need remote address for rd_cred() to verify client */
if ((status = krb5_auth_con_genaddrs(krb_context, auth_context, f,
KRB5_AUTH_CONTEXT_GENERATE_REMOTE_FULL_ADDR)))
return (status);
status = krb5_auth_con_getrcache(krb_context, auth_context, &rcache);
if (status)
return (status);
if (!rcache) {
krb5_principal server;
status = krb5_sname_to_principal(krb_context, 0, 0,
KRB5_NT_SRV_HST, &server);
if (status)
return (status);
status = krb5_get_server_rcache(krb_context,
krb5_princ_component(krb_context, server, 0),
&rcache);
krb5_free_principal(krb_context, server);
if (status)
return (status);
status = krb5_auth_con_setrcache(krb_context, auth_context,
rcache);
if (status)
return (status);
}
if ((status = krb5_compat_recvauth(krb_context,
&auth_context,
&f,
NULL, /* Specify daemon principal */
0, /* no flags */
keytab, /* NULL to use v5srvtab */
ticket, /* return ticket */
auth_type, /* authentication system */
&auth_version))) {
if (*auth_type == KRB5_RECVAUTH_V5) {
/*
* clean up before exiting
*/
getstr(f, rusername, sizeof (rusername), "remuser");
getstr(f, lusername, sizeof (lusername), "locuser");
getstr(f, term, sizeof (term), "Terminal type");
}
return (status);
}
getstr(f, lusername, sizeof (lusername), "locuser");
getstr(f, term, sizeof (term), "Terminal type");
kcmd_protocol = KCMD_UNKNOWN_PROTOCOL;
if (auth_version.length != 9 || auth_version.data == NULL) {
syslog(LOG_ERR, "Bad application protocol version length in "
"KRB5 exchange, exiting");
fatal(f, "Bad application version length, exiting.");
}
/*
* Determine which Kerberos CMD protocol was used.
*/
if (strncmp(auth_version.data, "KCMDV0.1", 9) == 0) {
kcmd_protocol = KCMD_OLD_PROTOCOL;
} else if (strncmp(auth_version.data, "KCMDV0.2", 9) == 0) {
kcmd_protocol = KCMD_NEW_PROTOCOL;
} else {
syslog(LOG_ERR, "Unrecognized KCMD protocol (%s), exiting",
(char *)auth_version.data);
fatal(f, "Unrecognized KCMD protocol, exiting");
}
if ((*auth_type == KRB5_RECVAUTH_V5) && chksum_flag &&
kcmd_protocol == KCMD_OLD_PROTOCOL) {
if ((status = krb5_auth_con_getauthenticator(krb_context,
auth_context,
&authenticator)))
return (status);
if (authenticator->checksum) {
struct sockaddr_storage adr;
int adr_length = sizeof (adr);
int buflen;
krb5_data input;
krb5_keyblock key;
char *chksumbuf;
/*
* Define the lenght of the chksum buffer.
* chksum string = "[portnum]:termstr:username"
* The extra 32 is to hold a integer string for
* the portnumber.
*/
buflen = strlen(term) + strlen(lusername) + 32;
chksumbuf = (char *)malloc(buflen);
if (chksumbuf == 0) {
krb5_free_authenticator(krb_context,
authenticator);
fatal(f, "Out of memory error");
}
if (getsockname(f, (struct sockaddr *)&adr,
&adr_length) != 0) {
krb5_free_authenticator(krb_context,
authenticator);
fatal(f, "getsockname error");
}
(void) snprintf(chksumbuf, buflen,
"%u:%s%s",
ntohs(SOCK_PORT(adr)),
term, lusername);
input.data = chksumbuf;
input.length = strlen(chksumbuf);
key.contents = (*ticket)->enc_part2->session->contents;
key.length = (*ticket)->enc_part2->session->length;
status = krb5_c_verify_checksum(krb_context,
&key, 0,
&input,
authenticator->checksum,
valid_checksum);
if (status == 0 && *valid_checksum == 0)
status = KRB5KRB_AP_ERR_BAD_INTEGRITY;
if (chksumbuf)
krb5_xfree(chksumbuf);
if (status) {
krb5_free_authenticator(krb_context,
authenticator);
return (status);
}
}
krb5_free_authenticator(krb_context, authenticator);
}
if ((status = krb5_copy_principal(krb_context,
(*ticket)->enc_part2->client,
client)))
return (status);
/* Get the Unix username of the remote user */
getstr(f, rusername, sizeof (rusername), "remuser");
/* Get the Kerberos principal name string of the remote user */
if ((status = krb5_unparse_name(krb_context, *client, &krusername)))
return (status);
#ifdef DEBUG
syslog(LOG_DEBUG | LOG_AUTH, "rlogind: got krb5 credentials for %s",
(krusername != NULL ? krusername : "******"));
#endif
if (encr_flag) {
status = krb5_auth_con_getremotesubkey(krb_context,
auth_context,
&session_key);
if (status) {
syslog(LOG_ERR, "Error getting KRB5 session "
"subkey, exiting");
fatal(f, "Error getting KRB5 session subkey, exiting");
}
/*
* The "new" protocol requires that a subkey be sent.
*/
if (session_key == NULL &&
kcmd_protocol == KCMD_NEW_PROTOCOL) {
syslog(LOG_ERR, "No KRB5 session subkey sent, exiting");
fatal(f, "No KRB5 session subkey sent, exiting");
}
/*
* The "old" protocol does not permit an authenticator subkey.
* The key is taken from the ticket instead (see below).
*/
if (session_key != NULL &&
kcmd_protocol == KCMD_OLD_PROTOCOL) {
syslog(LOG_ERR, "KRB5 session subkey not permitted "
"with old KCMD protocol, exiting");
fatal(f, "KRB5 session subkey not permitted "
"with old KCMD protocol, exiting");
}
/*
* If no key at this point, use the session key from
* the ticket.
*/
if (session_key == NULL) {
/*
* Save the session key so we can configure the crypto
* module later.
*/
status = krb5_copy_keyblock(krb_context,
(*ticket)->enc_part2->session,
&session_key);
if (status) {
syslog(LOG_ERR, "krb5_copy_keyblock failed");
fatal(f, "krb5_copy_keyblock failed");
}
}
/*
* If session key still cannot be found, we must
* exit because encryption is required here
* when encr_flag (-x) is set.
*/
if (session_key == NULL) {
syslog(LOG_ERR, "Could not find an encryption key,"
"exiting");
fatal(f, "Encryption required but key not found, "
"exiting");
}
}
/*
* Use krb5_read_message to read the principal stuff.
*/
if ((status = krb5_read_message(krb_context, (krb5_pointer)&f,
&inbuf)))
fatal(f, "Error reading krb5 message");
if (inbuf.length) { /* Forwarding being done, read creds */
krb5_creds **creds = NULL;
if (status = krb5_rd_cred(krb_context, auth_context, &inbuf,
&creds, NULL)) {
if (rcache)
(void) krb5_rc_close(krb_context, rcache);
krb5_free_creds(krb_context, *creds);
fatal(f, "Can't get forwarded credentials");
}
/* Store the forwarded creds in the ccache */
if (status = store_forw_creds(krb_context,
creds, *ticket, lusername,
&ccache)) {
if (rcache)
(void) krb5_rc_close(krb_context, rcache);
krb5_free_creds(krb_context, *creds);
fatal(f, "Can't store forwarded credentials");
}
krb5_free_creds(krb_context, *creds);
}
if (rcache)
(void) krb5_rc_close(krb_context, rcache);
return (status);
}
