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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 m_authenticated = (pairfind(m_vps, PW_MESSAGE_AUTHENTICATOR) != NULL);
103 alreadyAddedAttributeP(std::vector <std::string> &attrs, VALUE_PAIR *vp)
105 for (std::vector<std::string>::const_iterator a = attrs.begin();
108 if (strcmp(vp->name, (*a).c_str()) == 0)
116 isSecretAttributeP(uint16_t attrid, uint16_t vendor)
123 case PW_MS_MPPE_SEND_KEY:
124 case PW_MS_MPPE_RECV_KEY:
138 isSecretAttributeP(uint32_t attribute)
140 return isSecretAttributeP(ATTRID(attribute), VENDOR(attribute));
144 isHiddenAttributeP(uint16_t attrid, uint16_t vendor)
148 /* should have been filtered */
149 assert(!isSecretAttributeP(attrid, vendor));
152 case VENDORPEC_UKERNA:
163 isHiddenAttributeP(uint32_t attribute)
165 return isHiddenAttributeP(ATTRID(attribute), VENDOR(attribute));
169 * Copy AVP list, same as paircopy except it filters out attributes
173 copyAvps(const VALUE_PAIR *src)
175 const VALUE_PAIR *vp;
176 VALUE_PAIR *dst = NULL, **pDst = &dst;
178 for (vp = src; vp != NULL; vp = vp->next) {
181 if (isSecretAttributeP(vp->attribute))
184 vpcopy = paircopyvp(vp);
185 if (vpcopy == NULL) {
187 throw new std::bad_alloc;
191 pDst = &vpcopy->next;
198 gss_eap_radius_attr_provider::getAttributeTypes(gss_eap_attr_enumeration_cb addAttribute, void *data) const
201 std::vector <std::string> seen;
203 for (vp = m_vps; vp != NULL; vp = vp->next) {
204 gss_buffer_desc attribute;
207 if (isHiddenAttributeP(vp->attribute))
210 if (alreadyAddedAttributeP(seen, vp))
213 snprintf(attrid, sizeof(attrid), "%s%d",
214 (char *)radiusUrnPrefix.value, vp->attribute);
216 attribute.value = attrid;
217 attribute.length = strlen(attrid);
219 if (!addAttribute(this, &attribute, data))
222 seen.push_back(std::string(vp->name));
229 gss_eap_radius_attr_provider::setAttribute(int complete,
230 const gss_buffer_t attr,
231 const gss_buffer_t value)
236 gss_eap_radius_attr_provider::deleteAttribute(const gss_buffer_t value)
241 gss_eap_radius_attr_provider::getAttribute(const gss_buffer_t attr,
245 gss_buffer_t display_value,
249 gss_buffer_desc strAttr = GSS_C_EMPTY_BUFFER;
254 duplicateBuffer(*attr, &strAttr);
255 s = (char *)strAttr.value;
257 if (attr->length < radiusUrnPrefix.length ||
258 memcmp(s, radiusUrnPrefix.value, radiusUrnPrefix.length) != 0)
261 s += radiusUrnPrefix.length;
264 attrid = strtoul(s, NULL, 10);
266 da = dict_attrbyname(s);
268 gss_release_buffer(&tmpMinor, &strAttr);
274 gss_release_buffer(&tmpMinor, &strAttr);
276 return getAttribute(attrid, authenticated, complete,
277 value, display_value, more);
281 gss_eap_radius_attr_provider::getAttribute(uint32_t attrid,
285 gss_buffer_t display_value,
289 int i = *more, count = 0;
293 if (isHiddenAttributeP(attrid))
299 for (vp = pairfind(m_vps, attrid);
301 vp = pairfind(vp->next, attrid)) {
303 if (pairfind(vp->next, attrid) != NULL)
309 if (vp == NULL && *more == 0)
312 if (value != GSS_C_NO_BUFFER) {
313 gss_buffer_desc valueBuf;
315 valueBuf.value = (void *)vp->vp_octets;
316 valueBuf.length = vp->length;
318 duplicateBuffer(valueBuf, value);
321 if (display_value != GSS_C_NO_BUFFER) {
322 char displayString[MAX_STRING_LEN];
323 gss_buffer_desc displayBuf;
325 displayBuf.length = vp_prints_value(displayString,
326 sizeof(displayString), vp, 0);
327 displayBuf.value = (void *)displayString;
329 duplicateBuffer(displayBuf, display_value);
332 if (authenticated != NULL)
333 *authenticated = m_authenticated;
334 if (complete != NULL)
341 gss_eap_radius_attr_provider::getFragmentedAttribute(uint16_t attribute,
345 gss_buffer_t value) const
347 OM_uint32 major, minor;
349 major = gssEapRadiusGetAvp(&minor, m_vps, attribute, vendor, value, TRUE);
351 if (authenticated != NULL)
352 *authenticated = m_authenticated;
353 if (complete != NULL)
356 return !GSS_ERROR(major);
360 gss_eap_radius_attr_provider::getAttribute(uint16_t attribute,
365 gss_buffer_t display_value,
369 return getAttribute(VENDORATTR(attribute, vendor),
370 authenticated, complete,
371 value, display_value, more);
375 gss_eap_radius_attr_provider::mapToAny(int authenticated,
376 gss_buffer_t type_id) const
378 if (authenticated && !m_authenticated)
379 return (gss_any_t)NULL;
381 return (gss_any_t)copyAvps(m_vps);
385 gss_eap_radius_attr_provider::releaseAnyNameMapping(gss_buffer_t type_id,
386 gss_any_t input) const
388 pairfree((VALUE_PAIR **)&input);
392 gss_eap_radius_attr_provider::init(void)
394 gss_eap_attr_ctx::registerProvider(ATTR_TYPE_RADIUS,
395 "urn:ietf:params:gss-eap:radius-avp",
396 gss_eap_radius_attr_provider::createAttrContext);
401 gss_eap_radius_attr_provider::finalize(void)
403 gss_eap_attr_ctx::unregisterProvider(ATTR_TYPE_RADIUS);
406 gss_eap_attr_provider *
407 gss_eap_radius_attr_provider::createAttrContext(void)
409 return new gss_eap_radius_attr_provider;
413 gssEapRadiusAddAvp(OM_uint32 *minor,
419 uint32_t attrid = VENDORATTR(vendor, attribute);
420 unsigned char *p = (unsigned char *)buffer->value;
421 size_t remain = buffer->length;
427 if (n > MAX_STRING_LEN)
430 vp = paircreate(attrid, PW_TYPE_OCTETS);
433 return GSS_S_FAILURE;
436 memcpy(vp->vp_octets, p, n);
443 } while (remain != 0);
445 return GSS_S_COMPLETE;
449 gssEapRadiusGetRawAvp(OM_uint32 *minor,
455 uint32_t attr = VENDORATTR(vendor, attribute);
457 *vp = pairfind(vps, attr);
459 return (*vp == NULL) ? GSS_S_UNAVAILABLE : GSS_S_COMPLETE;
463 gssEapRadiusGetAvp(OM_uint32 *minor,
472 uint32_t attr = VENDORATTR(vendor, attribute);
475 buffer->value = NULL;
477 vp = pairfind(vps, attr);
479 return GSS_S_UNAVAILABLE;
482 buffer->length += vp->length;
483 } while (concat && (vp = pairfind(vp->next, attr)) != NULL);
485 buffer->value = GSSEAP_MALLOC(buffer->length);
486 if (buffer->value == NULL) {
488 return GSS_S_FAILURE;
491 p = (unsigned char *)buffer->value;
493 for (vp = pairfind(vps, attr);
494 concat && vp != NULL;
495 vp = pairfind(vp->next, attr)) {
496 memcpy(p, vp->vp_octets, vp->length);
501 return GSS_S_COMPLETE;
505 gssEapRadiusFreeAvps(OM_uint32 *minor,
510 return GSS_S_COMPLETE;
514 gssEapRadiusAttrProviderInit(OM_uint32 *minor)
516 return gss_eap_radius_attr_provider::init()
517 ? GSS_S_COMPLETE : GSS_S_FAILURE;
521 gssEapRadiusAttrProviderFinalize(OM_uint32 *minor)
523 gss_eap_radius_attr_provider::finalize();
524 return GSS_S_COMPLETE;
527 /* partition error namespace so it does not conflict with krb5 */
528 #define ERROR_TABLE_BASE_rse (46882560L)
530 #define RS_TO_COM_ERR(rse) ((rse) == RSE_OK ? 0 : (rse) + ERROR_TABLE_BASE_rse)
531 #define COM_TO_RS_ERR(err) ((err) > ERROR_TABLE_BASE_rse && \
532 (err) <= (ERROR_TABLE_BASE_rse + RSE_SOME_ERROR) ? \
533 (err) - ERROR_TABLE_BASE_rse : RSE_SOME_ERROR)
536 gssEapRadiusMapError(OM_uint32 *minor,
537 struct rs_error *err)
542 code = rs_err_code(err, 0);
544 code = RSE_SOME_ERROR;
546 *minor = RS_TO_COM_ERR(code);
548 gssEapSaveStatusInfo(*minor, "radsec: %s", rs_err_msg(err, 0));
551 return GSS_S_FAILURE;
555 gssEapRadiusAllocConn(OM_uint32 *minor,
556 const gss_cred_id_t cred,
559 struct gss_eap_acceptor_ctx *actx = &ctx->acceptorCtx;
560 const char *configFile = RS_CONFIG_FILE;
561 const char *configStanza = "gss-eap";
562 struct rs_alloc_scheme ralloc;
563 struct rs_error *err;
565 assert(actx->radHandle == NULL);
566 assert(actx->radConn == NULL);
568 if (rs_context_create(&actx->radHandle, RS_DICT_FILE) != 0)
569 return GSS_S_FAILURE;
571 if (cred != GSS_C_NO_CREDENTIAL) {
572 if (cred->radiusConfigFile != NULL)
573 configFile = cred->radiusConfigFile;
574 if (cred->radiusConfigStanza != NULL)
575 configStanza = cred->radiusConfigStanza;
578 ralloc.calloc = GSSEAP_CALLOC;
579 ralloc.malloc = GSSEAP_MALLOC;
580 ralloc.free = GSSEAP_FREE;
581 ralloc.realloc = GSSEAP_REALLOC;
583 rs_context_set_alloc_scheme(actx->radHandle, &ralloc);
585 if (rs_context_read_config(actx->radHandle, configFile) != 0) {
586 err = rs_err_ctx_pop(actx->radHandle);
590 if (rs_conn_create(actx->radHandle, &actx->radConn, configStanza) != 0) {
591 err = rs_err_conn_pop(actx->radConn);
595 /* XXX TODO rs_conn_select_server does not exist yet */
597 if (actx->radServer != NULL) {
598 if (rs_conn_select_server(actx->radConn, actx->radServer) != 0) {
599 err = rs_err_conn_pop(actx->radConn);
606 return GSS_S_COMPLETE;
609 OM_uint32 major = gssEapRadiusMapError(minor, err);
611 if (actx->radConn != NULL) {
612 rs_conn_destroy(actx->radConn);
613 actx->radConn = NULL;
616 if (actx->radHandle != NULL) {
617 rs_context_destroy(actx->radHandle);
618 actx->radHandle = NULL;
626 * 4 octet NBO attribute ID | 4 octet attribute length | attribute data
629 avpSize(const VALUE_PAIR *vp)
640 avpExport(const VALUE_PAIR *vp,
641 unsigned char **pBuffer,
644 unsigned char *p = *pBuffer;
645 size_t remain = *pRemain;
647 assert(remain >= avpSize(vp));
649 store_uint32_be(vp->attribute, p);
652 case PW_TYPE_INTEGER:
656 store_uint32_be(vp->lvalue, p + 5);
659 assert(vp->length <= MAX_STRING_LEN);
660 p[4] = (uint8_t)vp->length;
661 memcpy(p + 5, vp->vp_octets, vp->length);
665 *pBuffer += 5 + p[4];
666 *pRemain -= 5 + p[4];
673 avpImport(VALUE_PAIR **pVp,
674 unsigned char **pBuffer,
677 unsigned char *p = *pBuffer;
678 size_t remain = *pRemain;
679 VALUE_PAIR *vp = NULL;
683 if (remain < avpSize(NULL))
686 attrid = load_uint32_be(p);
690 da = dict_attrbyvalue(attrid);
696 throw new std::bad_alloc;
704 case PW_TYPE_INTEGER:
711 vp->lvalue = load_uint32_be(p + 1);
716 /* check enough room to NUL terminate */
717 if (p[0] == MAX_STRING_LEN)
722 if (p[0] > MAX_STRING_LEN)
725 vp->length = (uint32_t)p[0];
726 memcpy(vp->vp_octets, p + 1, vp->length);
728 if (vp->type == PW_TYPE_STRING)
729 vp->vp_strvalue[vp->length] = '\0';
732 remain -= 1 + vp->length;
748 gss_eap_radius_attr_provider::initFromBuffer(const gss_eap_attr_ctx *ctx,
749 const gss_buffer_t buffer)
751 unsigned char *p = (unsigned char *)buffer->value;
752 size_t remain = buffer->length;
754 VALUE_PAIR **pNext = &m_vps;
756 if (!gss_eap_attr_provider::initFromBuffer(ctx, buffer))
762 count = load_uint32_be(p);
769 if (!avpImport(&attr, &p, &remain))
776 } while (remain != 0);
785 gss_eap_radius_attr_provider::exportToBuffer(gss_buffer_t buffer) const
792 for (vp = m_vps; vp != NULL; vp = vp->next) {
793 remain += avpSize(vp);
797 buffer->value = GSSEAP_MALLOC(remain);
798 if (buffer->value == NULL) {
799 throw new std::bad_alloc;
802 buffer->length = remain;
804 p = (unsigned char *)buffer->value;
806 store_uint32_be(count, p);
810 for (vp = m_vps; vp != NULL; vp = vp->next) {
811 avpExport(vp, &p, &remain);
818 gss_eap_radius_attr_provider::getExpiryTime(void) const
822 vp = pairfind(m_vps, PW_SESSION_TIMEOUT);
823 if (vp == NULL || vp->lvalue == 0)
826 return time(NULL) + vp->lvalue;