6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
20 * Copyright 2010 Phil Mayers <p.mayers@imperial.ac.uk>
23 #include <freeradius-devel/ident.h>
26 #include <freeradius-devel/radiusd.h>
27 #include <freeradius-devel/modules.h>
28 #include <freeradius-devel/dhcp.h>
29 #include <freeradius-devel/soh.h>
32 typedef struct rlm_soh_t {
33 const char *xlat_name;
39 * Not sure how to make this useful yet...
41 static size_t soh_xlat(UNUSED void *instance, REQUEST *request, char *fmt, char *out, size_t outlen, UNUSED RADIUS_ESCAPE_STRING func) {
46 /* there will be no point unless SoH-Supported = yes
48 * FIXME: should have a #define for the attribute...
49 * SoH-Supported == 2119 in dictionary.freeradius.internal
51 vp[0] = pairfind(request->packet->vps, 2119);
56 if (strncasecmp(fmt, "OS", 2) == 0) {
58 vp[0] = pairfind(request->packet->vps, 2100);
59 vp[1] = pairfind(request->packet->vps, 2101);
60 vp[2] = pairfind(request->packet->vps, 2102);
61 vp[3] = pairfind(request->packet->vps, 2103);
62 vp[4] = pairfind(request->packet->vps, 2104);
63 vp[5] = pairfind(request->packet->vps, 2105);
65 if (vp[0] && vp[0]->vp_integer == 311) {
67 snprintf(out, outlen, "Windows unknown");
69 switch (vp[1]->vp_integer) {
83 snprintf(out, outlen, "Windows %s %d.%d.%d sp %d.%d", osname, vp[1]->vp_integer,
84 vp[2] ? vp[2]->vp_integer : 0,
85 vp[3] ? vp[3]->vp_integer : 0,
86 vp[4] ? vp[4]->vp_integer : 0,
87 vp[5] ? vp[5]->vp_integer : 0
98 static const CONF_PARSER module_config[] = {
102 { "dhcp", PW_TYPE_BOOLEAN, offsetof(rlm_soh_t,dhcp), NULL, "no" },
104 { NULL, -1, 0, NULL, NULL } /* end the list */
107 static int soh_detach(void *instance) {
108 rlm_soh_t *inst = instance;
110 if (inst->xlat_name) {
111 xlat_unregister(inst->xlat_name, soh_xlat);
112 free(inst->xlat_name);
118 static int soh_instantiate(CONF_SECTION *conf, void **instance) {
121 inst = *instance = rad_malloc(sizeof(*inst));
125 memset(inst, 0, sizeof(*inst));
127 if (cf_section_parse(conf, inst, module_config) < 0) {
132 inst->xlat_name = cf_section_name2(conf);
133 if (!inst->xlat_name) inst->xlat_name = cf_section_name1(conf);
134 inst->xlat_name = strdup(inst->xlat_name);
135 xlat_register(inst->xlat_name, soh_xlat, inst);
140 static int soh_postauth(UNUSED void * instance, REQUEST *request)
145 vp = pairfind(request->packet->vps, DHCP2ATTR(43));
148 * vendor-specific options contain
150 * vendor opt 220/0xdc - SoH payload, or null byte to probe, or string
151 * "NAP" to indicate server-side support for SoH in OFFERs
153 * vendor opt 222/0xde - SoH correlation ID as utf-16 string, yuck...
155 uint8_t vopt, vlen, *data;
157 data = vp->vp_octets;
158 while (data < vp->vp_octets + vp->length) {
164 RDEBUG("SoH adding NAP marker to DHCP reply");
165 /* client probe; send "NAP" in the reply */
166 vp = paircreate(DHCP2ATTR(43), PW_TYPE_OCTETS);
167 vp->vp_octets[0] = 220;
168 vp->vp_octets[1] = 3;
169 vp->vp_octets[4] = 'N';
170 vp->vp_octets[3] = 'A';
171 vp->vp_octets[2] = 'P';
174 pairadd(&request->reply->vps, vp);
177 RDEBUG("SoH decoding NAP from DHCP request");
179 soh_verify(request->packet->vps, data, vlen);
188 return RLM_MODULE_OK;
191 return RLM_MODULE_NOOP;
194 static int soh_authorize(UNUSED void * instance, REQUEST *request)
199 /* try to find the MS-SoH payload */
200 vp = pairfind(request->packet->vps, (311 | 16) | 55);
202 RDEBUG("SoH radius VP not found");
203 return RLM_MODULE_NOOP;
206 RDEBUG("SoH radius VP found");
208 rv = soh_verify(request, request->packet->vps, vp->vp_octets, vp->length);
210 return RLM_MODULE_OK;
216 RLM_TYPE_THREAD_SAFE, /* type */
217 soh_instantiate, /* instantiation */
218 soh_detach, /* detach */
220 NULL, /* authenticate */
221 soh_authorize, /* authorize */
222 NULL, /* pre-accounting */
223 NULL, /* accounting */
224 NULL, /* checksimul */
225 NULL, /* pre-proxy */
226 NULL, /* post-proxy */
227 soh_postauth /* post-auth */