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33 #include "gssapiP_eap.h"
35 /* stuff that should be provided by libradsec/libfreeradius-radius */
36 #define VENDORATTR(vendor, attr) (((vendor) << 16) | (attr))
39 #define ATTRID(attr) ((attr) & 0xFFFF)
42 static gss_buffer_desc radiusUrnPrefix = {
43 sizeof("urn:x-radius:") - 1,
44 (void *)"urn:x-radius:"
47 static VALUE_PAIR *copyAvps(const VALUE_PAIR *src);
49 gss_eap_radius_attr_provider::gss_eap_radius_attr_provider(void)
52 m_authenticated = false;
55 gss_eap_radius_attr_provider::~gss_eap_radius_attr_provider(void)
62 gss_eap_radius_attr_provider::initFromExistingContext(const gss_eap_attr_ctx *manager,
63 const gss_eap_attr_provider *ctx)
65 const gss_eap_radius_attr_provider *radius;
67 if (!gss_eap_attr_provider::initFromExistingContext(manager, ctx))
70 radius = static_cast<const gss_eap_radius_attr_provider *>(ctx);
72 if (radius->m_vps != NULL)
73 m_vps = copyAvps(const_cast<VALUE_PAIR *>(radius->getAvps()));
75 m_authenticated = radius->m_authenticated;
81 gss_eap_radius_attr_provider::initFromGssContext(const gss_eap_attr_ctx *manager,
82 const gss_cred_id_t gssCred,
83 const gss_ctx_id_t gssCtx)
85 if (!gss_eap_attr_provider::initFromGssContext(manager, gssCred, gssCtx))
88 if (gssCtx != GSS_C_NO_CONTEXT) {
89 if (gssCtx->acceptorCtx.vps != NULL) {
90 m_vps = copyAvps(gssCtx->acceptorCtx.vps);
94 /* We assume libradsec validated this for us */
95 assert(pairfind(m_vps, PW_MESSAGE_AUTHENTICATOR) != NULL);
96 m_authenticated = true;
104 alreadyAddedAttributeP(std::vector <std::string> &attrs, VALUE_PAIR *vp)
106 for (std::vector<std::string>::const_iterator a = attrs.begin();
109 if (strcmp(vp->name, (*a).c_str()) == 0)
117 isSecretAttributeP(uint16_t attrid, uint16_t vendor)
124 case PW_MS_MPPE_SEND_KEY:
125 case PW_MS_MPPE_RECV_KEY:
139 isSecretAttributeP(uint32_t attribute)
141 return isSecretAttributeP(ATTRID(attribute), VENDOR(attribute));
145 isInternalAttributeP(uint16_t attrid, uint16_t vendor)
149 /* should have been filtered */
150 assert(!isSecretAttributeP(attrid, vendor));
153 case VENDORPEC_UKERNA:
164 isInternalAttributeP(uint32_t attribute)
166 return isInternalAttributeP(ATTRID(attribute), VENDOR(attribute));
170 * Copy AVP list, same as paircopy except it filters out attributes
174 copyAvps(const VALUE_PAIR *src)
176 const VALUE_PAIR *vp;
177 VALUE_PAIR *dst = NULL, **pDst = &dst;
179 for (vp = src; vp != NULL; vp = vp->next) {
182 if (isSecretAttributeP(vp->attribute))
185 vpcopy = paircopyvp(vp);
186 if (vpcopy == NULL) {
188 throw new std::bad_alloc;
192 pDst = &vpcopy->next;
199 gss_eap_radius_attr_provider::getAttributeTypes(gss_eap_attr_enumeration_cb addAttribute,
203 std::vector <std::string> seen;
205 for (vp = m_vps; vp != NULL; vp = vp->next) {
206 gss_buffer_desc attribute;
209 /* Don't advertise attributes that are internal to the GSS-EAP mechanism */
210 if (isInternalAttributeP(vp->attribute))
213 if (alreadyAddedAttributeP(seen, vp))
216 snprintf(attrid, sizeof(attrid), "%s%d",
217 (char *)radiusUrnPrefix.value, vp->attribute);
219 attribute.value = attrid;
220 attribute.length = strlen(attrid);
222 if (!addAttribute(this, &attribute, data))
225 seen.push_back(std::string(vp->name));
232 getAttributeId(const gss_buffer_t attr)
235 gss_buffer_desc strAttr = GSS_C_EMPTY_BUFFER;
240 if (attr->length < radiusUrnPrefix.length ||
241 memcmp(attr->value, radiusUrnPrefix.value, radiusUrnPrefix.length) != 0)
244 /* need to duplicate because attr may not be NUL terminated */
245 duplicateBuffer(*attr, &strAttr);
246 s = (char *)strAttr.value + radiusUrnPrefix.length;
249 attrid = strtoul(s, NULL, 10);
251 da = dict_attrbyname(s);
256 gss_release_buffer(&tmpMinor, &strAttr);
262 gss_eap_radius_attr_provider::setAttribute(int complete,
264 const gss_buffer_t value)
266 OM_uint32 major = GSS_S_UNAVAILABLE, minor;
268 if (!isSecretAttributeP(attrid) &&
269 !isInternalAttributeP(attrid)) {
270 deleteAttribute(attrid);
272 major = gssEapRadiusAddAvp(&minor, &m_vps,
273 ATTRID(attrid), VENDOR(attrid),
277 return !GSS_ERROR(major);
281 gss_eap_radius_attr_provider::setAttribute(int complete,
282 const gss_buffer_t attr,
283 const gss_buffer_t value)
285 uint32_t attrid = getAttributeId(attr);
290 return setAttribute(complete, attrid, value);
294 gss_eap_radius_attr_provider::deleteAttribute(uint32_t attrid)
296 if (isSecretAttributeP(attrid) || isInternalAttributeP(attrid) ||
297 pairfind(m_vps, attrid) == NULL)
300 pairdelete(&m_vps, attrid);
306 gss_eap_radius_attr_provider::deleteAttribute(const gss_buffer_t attr)
308 uint32_t attrid = getAttributeId(attr);
313 return deleteAttribute(attrid);
317 gss_eap_radius_attr_provider::getAttribute(const gss_buffer_t attr,
321 gss_buffer_t display_value,
326 attrid = getAttributeId(attr);
330 return getAttribute(attrid, authenticated, complete,
331 value, display_value, more);
335 gss_eap_radius_attr_provider::getAttribute(uint32_t attrid,
339 gss_buffer_t display_value,
343 int i = *more, count = 0;
350 for (vp = pairfind(m_vps, attrid);
352 vp = pairfind(vp->next, attrid)) {
354 if (pairfind(vp->next, attrid) != NULL)
360 if (vp == NULL && *more == 0)
363 if (value != GSS_C_NO_BUFFER) {
364 gss_buffer_desc valueBuf;
366 valueBuf.value = (void *)vp->vp_octets;
367 valueBuf.length = vp->length;
369 duplicateBuffer(valueBuf, value);
372 if (display_value != GSS_C_NO_BUFFER) {
373 char displayString[MAX_STRING_LEN];
374 gss_buffer_desc displayBuf;
376 displayBuf.length = vp_prints_value(displayString,
377 sizeof(displayString), vp, 0);
378 displayBuf.value = (void *)displayString;
380 duplicateBuffer(displayBuf, display_value);
383 if (authenticated != NULL)
384 *authenticated = m_authenticated;
385 if (complete != NULL)
392 gss_eap_radius_attr_provider::getFragmentedAttribute(uint16_t attribute,
396 gss_buffer_t value) const
398 OM_uint32 major, minor;
400 major = gssEapRadiusGetAvp(&minor, m_vps, attribute, vendor, value, TRUE);
402 if (authenticated != NULL)
403 *authenticated = m_authenticated;
404 if (complete != NULL)
407 return !GSS_ERROR(major);
411 gss_eap_radius_attr_provider::getAttribute(uint16_t attribute,
416 gss_buffer_t display_value,
420 return getAttribute(VENDORATTR(attribute, vendor),
421 authenticated, complete,
422 value, display_value, more);
426 gss_eap_radius_attr_provider::mapToAny(int authenticated,
427 gss_buffer_t type_id) const
429 if (authenticated && !m_authenticated)
430 return (gss_any_t)NULL;
432 return (gss_any_t)copyAvps(m_vps);
436 gss_eap_radius_attr_provider::releaseAnyNameMapping(gss_buffer_t type_id,
437 gss_any_t input) const
439 pairfree((VALUE_PAIR **)&input);
443 gss_eap_radius_attr_provider::init(void)
445 gss_eap_attr_ctx::registerProvider(ATTR_TYPE_RADIUS,
446 "urn:ietf:params:gss-eap:radius-avp",
447 gss_eap_radius_attr_provider::createAttrContext);
452 gss_eap_radius_attr_provider::finalize(void)
454 gss_eap_attr_ctx::unregisterProvider(ATTR_TYPE_RADIUS);
457 gss_eap_attr_provider *
458 gss_eap_radius_attr_provider::createAttrContext(void)
460 return new gss_eap_radius_attr_provider;
464 gssEapRadiusAddAvp(OM_uint32 *minor,
468 const gss_buffer_t buffer)
470 uint32_t attrid = VENDORATTR(vendor, attribute);
471 unsigned char *p = (unsigned char *)buffer->value;
472 size_t remain = buffer->length;
478 if (n > MAX_STRING_LEN)
481 vp = paircreate(attrid, PW_TYPE_OCTETS);
484 return GSS_S_FAILURE;
487 memcpy(vp->vp_octets, p, n);
494 } while (remain != 0);
496 return GSS_S_COMPLETE;
500 gssEapRadiusGetRawAvp(OM_uint32 *minor,
506 uint32_t attr = VENDORATTR(vendor, attribute);
508 *vp = pairfind(vps, attr);
510 *minor = GSSEAP_NO_SUCH_ATTR;
511 return GSS_S_UNAVAILABLE;
514 return GSS_S_COMPLETE;
518 gssEapRadiusGetAvp(OM_uint32 *minor,
527 uint32_t attr = VENDORATTR(vendor, attribute);
530 buffer->value = NULL;
532 vp = pairfind(vps, attr);
534 *minor = GSSEAP_NO_SUCH_ATTR;
535 return GSS_S_UNAVAILABLE;
539 buffer->length += vp->length;
540 } while (concat && (vp = pairfind(vp->next, attr)) != NULL);
542 buffer->value = GSSEAP_MALLOC(buffer->length);
543 if (buffer->value == NULL) {
545 return GSS_S_FAILURE;
548 p = (unsigned char *)buffer->value;
550 for (vp = pairfind(vps, attr);
551 concat && vp != NULL;
552 vp = pairfind(vp->next, attr)) {
553 memcpy(p, vp->vp_octets, vp->length);
558 return GSS_S_COMPLETE;
562 gssEapRadiusFreeAvps(OM_uint32 *minor,
567 return GSS_S_COMPLETE;
571 gssEapRadiusAttrProviderInit(OM_uint32 *minor)
573 if (!gss_eap_radius_attr_provider::init()) {
574 *minor = GSSEAP_RADSEC_INIT_FAILURE;
575 return GSS_S_FAILURE;
578 return GSS_S_COMPLETE;
582 gssEapRadiusAttrProviderFinalize(OM_uint32 *minor)
584 gss_eap_radius_attr_provider::finalize();
585 return GSS_S_COMPLETE;
590 * 4 octet NBO attribute ID | 4 octet attribute length | attribute data
593 avpSize(const VALUE_PAIR *vp)
604 avpExport(const VALUE_PAIR *vp,
605 unsigned char **pBuffer,
608 unsigned char *p = *pBuffer;
609 size_t remain = *pRemain;
611 assert(remain >= avpSize(vp));
613 store_uint32_be(vp->attribute, p);
616 case PW_TYPE_INTEGER:
620 store_uint32_be(vp->lvalue, p + 5);
623 assert(vp->length <= MAX_STRING_LEN);
624 p[4] = (uint8_t)vp->length;
625 memcpy(p + 5, vp->vp_octets, vp->length);
629 *pBuffer += 5 + p[4];
630 *pRemain -= 5 + p[4];
637 avpImport(VALUE_PAIR **pVp,
638 unsigned char **pBuffer,
641 unsigned char *p = *pBuffer;
642 size_t remain = *pRemain;
643 VALUE_PAIR *vp = NULL;
647 if (remain < avpSize(NULL))
650 attrid = load_uint32_be(p);
654 da = dict_attrbyvalue(attrid);
660 throw new std::bad_alloc;
668 case PW_TYPE_INTEGER:
675 vp->lvalue = load_uint32_be(p + 1);
680 /* check enough room to NUL terminate */
681 if (p[0] == MAX_STRING_LEN)
686 if (p[0] > MAX_STRING_LEN)
689 vp->length = (uint32_t)p[0];
690 memcpy(vp->vp_octets, p + 1, vp->length);
692 if (vp->type == PW_TYPE_STRING)
693 vp->vp_strvalue[vp->length] = '\0';
696 remain -= 1 + vp->length;
712 gss_eap_radius_attr_provider::initFromBuffer(const gss_eap_attr_ctx *ctx,
713 const gss_buffer_t buffer)
715 unsigned char *p = (unsigned char *)buffer->value;
716 size_t remain = buffer->length;
717 VALUE_PAIR **pNext = &m_vps;
719 if (!gss_eap_attr_provider::initFromBuffer(ctx, buffer))
725 if (!avpImport(&attr, &p, &remain))
730 } while (remain != 0);
736 gss_eap_radius_attr_provider::exportToBuffer(gss_buffer_t buffer) const
742 for (vp = m_vps; vp != NULL; vp = vp->next) {
743 remain += avpSize(vp);
746 buffer->value = GSSEAP_MALLOC(remain);
747 if (buffer->value == NULL) {
748 throw new std::bad_alloc;
751 buffer->length = remain;
753 p = (unsigned char *)buffer->value;
755 for (vp = m_vps; vp != NULL; vp = vp->next) {
756 avpExport(vp, &p, &remain);
763 gss_eap_radius_attr_provider::getExpiryTime(void) const
767 vp = pairfind(m_vps, PW_SESSION_TIMEOUT);
768 if (vp == NULL || vp->lvalue == 0)
771 return time(NULL) + vp->lvalue;
775 gssEapRadiusMapError(OM_uint32 *minor,
776 struct rs_error *err)
782 code = rs_err_code(err, 0);
784 if (code == RSE_OK) {
786 return GSS_S_COMPLETE;
789 *minor = ERROR_TABLE_BASE_rse + code;
791 gssEapSaveStatusInfo(*minor, "%s", rs_err_msg(err, 0));
794 return GSS_S_FAILURE;