X-Git-Url: http://www.project-moonshot.org/gitweb/?a=blobdiff_plain;f=util_radius.cpp;h=314c685b45ee1697e42eeb05b5e03c84e1fccd6d;hb=26ca006e95e900ea1762d0c08ea68533bf954de5;hp=ac568a02d07eea90106b2736c62a07f85f1b6a26;hpb=c73a7d0a65c2cbef63cbdd53a860bcbda2b10d93;p=mech_eap.git

diff --git a/util_radius.cpp b/util_radius.cpp
index ac568a0..314c685 100644
--- a/util_radius.cpp
+++ b/util_radius.cpp
@@ -32,55 +32,80 @@
 
 #include "gssapiP_eap.h"
 
+/* stuff that should be provided by libradsec/libfreeradius-radius */
+#define VENDORATTR(vendor, attr)            (((vendor) << 16) | (attr))
+
+#ifndef ATTRID
+#define ATTRID(attr)                        ((attr) & 0xFFFF)
+#endif
+
 static gss_buffer_desc radiusUrnPrefix = {
-    sizeof("urn:radius:") - 1,
-    (void *)"urn:radius:"
+    sizeof("urn:x-radius:") - 1,
+    (void *)"urn:x-radius:"
 };
 
-VALUE_PAIR *
-gss_eap_radius_attr_provider::copyAvps(const VALUE_PAIR *src)
+static struct rs_error *
+radiusAllocHandle(const char *configFile,
+                  rs_handle **pHandle)
 {
-    const VALUE_PAIR *vp;
-    VALUE_PAIR *dst = NULL, **pDst = &dst;
+    rs_handle *rh;
+    struct rs_alloc_scheme ralloc;
 
-    for (vp = src; vp != NULL; vp = vp->next) {
-        VALUE_PAIR *vp2;
+    *pHandle = NULL;
 
-        vp2 = (VALUE_PAIR *)GSSEAP_CALLOC(1, sizeof(*vp2));
-        if (vp2 == NULL) {
-            rc_avpair_free(dst);
-            return NULL;
-        }
-        memcpy(vp2, vp, sizeof(*vp));
-        vp2->next = NULL;
-        *pDst = vp2;
-        pDst = &vp2->next;
+    if (configFile == NULL || configFile[0] == '\0')
+        configFile = RS_CONFIG_FILE;
+
+    if (rs_context_create(&rh, RS_DICT_FILE) != 0)
+        return NULL;
+
+    ralloc.calloc = GSSEAP_CALLOC;
+    ralloc.malloc = GSSEAP_MALLOC;
+    ralloc.free = GSSEAP_FREE;
+    ralloc.realloc = GSSEAP_REALLOC;
+
+    rs_context_set_alloc_scheme(rh, &ralloc);
+
+    if (rs_context_read_config(rh, configFile) != 0) {
+        rs_context_destroy(rh);
+        return rs_err_ctx_pop(rh);
     }
 
-    return dst;
+    *pHandle = rh;
+    return NULL;
 }
 
 gss_eap_radius_attr_provider::gss_eap_radius_attr_provider(void)
 {
     m_rh = NULL;
-    m_avps = NULL;
+    m_vps = NULL;
     m_authenticated = false;
 }
 
 gss_eap_radius_attr_provider::~gss_eap_radius_attr_provider(void)
 {
     if (m_rh != NULL)
-        rc_config_free(m_rh);
-    if (m_avps != NULL)
-        rc_avpair_free(m_avps);
+        rs_context_destroy(m_rh);
+    if (m_vps != NULL)
+        pairfree(&m_vps);
 }
 
 bool
-gss_eap_radius_attr_provider::initFromGssCred(const gss_cred_id_t cred)
+gss_eap_radius_attr_provider::allocRadHandle(const std::string &configFile)
 {
-    OM_uint32 minor;
+    m_configFile.assign(configFile);
+
+    /*
+     * Currently none of the FreeRADIUS functions we use here actually take
+     * a handle, so we may as well leave it as NULL.
+     */
+#if 0
+    radiusAllocHandle(m_configFile.c_str(), &m_rh);
 
-    return !GSS_ERROR(gssEapRadiusAllocHandle(&minor, cred, &m_rh));
+    return (m_rh != NULL);
+#else
+    return true;
+#endif
 }
 
 bool
@@ -92,13 +117,13 @@ gss_eap_radius_attr_provider::initFromExistingContext(const gss_eap_attr_ctx *ma
     if (!gss_eap_attr_provider::initFromExistingContext(manager, ctx))
         return false;
 
-    if (!initFromGssCred(GSS_C_NO_CREDENTIAL))
+    radius = static_cast<const gss_eap_radius_attr_provider *>(ctx);
+
+    if (!allocRadHandle(radius->m_configFile))
         return false;
 
-    radius = static_cast<const gss_eap_radius_attr_provider *>(ctx);
-    if (radius->m_avps != NULL) {
-        m_avps = copyAvps(radius->getAvps());
-    }
+    if (radius->m_vps != NULL)
+        m_vps = paircopy(const_cast<VALUE_PAIR *>(radius->getAvps()));
 
     return true;
 }
@@ -108,16 +133,21 @@ gss_eap_radius_attr_provider::initFromGssContext(const gss_eap_attr_ctx *manager
                                                  const gss_cred_id_t gssCred,
                                                  const gss_ctx_id_t gssCtx)
 {
+    std::string configFile(RS_CONFIG_FILE);
+
     if (!gss_eap_attr_provider::initFromGssContext(manager, gssCred, gssCtx))
         return false;
 
-    if (!initFromGssCred(gssCred))
+    if (gssCred != GSS_C_NO_CREDENTIAL && gssCred->radiusConfigFile != NULL)
+        configFile.assign(gssCred->radiusConfigFile);
+
+    if (!allocRadHandle(configFile))
         return false;
 
     if (gssCtx != GSS_C_NO_CONTEXT) {
-        if (gssCtx->acceptorCtx.avps != NULL) {
-            m_avps = copyAvps(gssCtx->acceptorCtx.avps);
-            if (m_avps == NULL)
+        if (gssCtx->acceptorCtx.vps != NULL) {
+            m_vps = paircopy(gssCtx->acceptorCtx.vps);
+            if (m_vps == NULL)
                 return false;
         }
     }
@@ -139,21 +169,21 @@ alreadyAddedAttributeP(std::vector <std::string> &attrs, VALUE_PAIR *vp)
 }
 
 static bool
-isHiddenAttributeP(int attrid, int vendor)
+isHiddenAttributeP(uint16_t attrid, uint16_t vendor)
 {
     bool ret = false;
 
     switch (vendor) {
-    case VENDOR_ID_MICROSOFT:
+    case VENDORPEC_MS:
         switch (attrid) {
-        case VENDOR_ATTR_MS_MPPE_SEND_KEY:
-        case VENDOR_ATTR_MS_MPPE_RECV_KEY:
+        case PW_MS_MPPE_SEND_KEY:
+        case PW_MS_MPPE_RECV_KEY:
             ret = true;
             break;
         default:
             break;
         }
-    case VENDOR_ID_UKERNA:
+    case VENDORPEC_UKERNA:
         ret = true;
         break;
     default:
@@ -169,7 +199,7 @@ gss_eap_radius_attr_provider::getAttributeTypes(gss_eap_attr_enumeration_cb addA
     VALUE_PAIR *vp;
     std::vector <std::string> seen;
 
-    for (vp = m_avps; vp != NULL; vp = vp->next) {
+    for (vp = m_vps; vp != NULL; vp = vp->next) {
         gss_buffer_desc attribute;
         char attrid[64];
         if (isHiddenAttributeP(ATTRID(vp->attribute), VENDOR(vp->attribute)))
@@ -215,11 +245,10 @@ gss_eap_radius_attr_provider::getAttribute(const gss_buffer_t attr,
 {
     OM_uint32 tmpMinor;
     gss_buffer_desc strAttr = GSS_C_EMPTY_BUFFER;
-    DICT_ATTR *d;
-    int attrid;
+    DICT_ATTR *da;
+    uint32_t attrid;
     char *s;
 
-    /* XXX vendor */
     duplicateBuffer(*attr, &strAttr);
     s = (char *)strAttr.value;
 
@@ -232,12 +261,12 @@ gss_eap_radius_attr_provider::getAttribute(const gss_buffer_t attr,
     if (isdigit(*s)) {
         attrid = strtoul(s, NULL, 10);
     } else {
-        d = rc_dict_findattr(m_rh, (char *)s);
-        if (d == NULL) {
+        da = dict_attrbyname(s);
+        if (da == NULL) {
             gss_release_buffer(&tmpMinor, &strAttr);
             return false;
         }
-        attrid = d->value;
+        attrid = da->attr;
     }
 
     gss_release_buffer(&tmpMinor, &strAttr);
@@ -246,42 +275,18 @@ gss_eap_radius_attr_provider::getAttribute(const gss_buffer_t attr,
                         value, display_value, more);
 }
 
-static bool
-isPrintableAttributeP(VALUE_PAIR *vp)
-{
-    size_t i;
-    int gotChar = 0;
-
-    for (i = 0; i < sizeof(vp->strvalue); i++) {
-        if (gotChar && vp->strvalue[i] == '\0')
-            return true;
-
-        if (!isprint(vp->strvalue[i]))
-            return false;
-
-        if (!gotChar)
-            gotChar++;
-    }
-
-    return true;
-}
-
 bool
-gss_eap_radius_attr_provider::getAttribute(int attrid,
-                                           int vendor,
+gss_eap_radius_attr_provider::getAttribute(uint16_t vattrid,
+                                           uint16_t vendor,
                                            int *authenticated,
                                            int *complete,
                                            gss_buffer_t value,
                                            gss_buffer_t display_value,
                                            int *more) const
 {
-    OM_uint32 tmpMinor;
+    uint32_t attrid = VENDORATTR(vendor, vattrid);
     VALUE_PAIR *vp;
     int i = *more, count = 0;
-    char name[NAME_LENGTH + 1];
-    char displayString[AUTH_STRING_LEN + 1];
-    gss_buffer_desc valueBuf = GSS_C_EMPTY_BUFFER;
-    gss_buffer_desc displayBuf = GSS_C_EMPTY_BUFFER;
 
     *more = 0;
 
@@ -291,11 +296,11 @@ gss_eap_radius_attr_provider::getAttribute(int attrid,
     if (i == -1)
         i = 0;
 
-    for (vp = rc_avpair_get(m_avps, attrid, vendor);
+    for (vp = pairfind(m_vps, attrid);
          vp != NULL;
-         vp = rc_avpair_get(vp->next, attrid, vendor)) {
+         vp = pairfind(vp->next, attrid)) {
         if (count++ == i) {
-            if (rc_avpair_get(vp->next, attrid, vendor) != NULL)
+            if (pairfind(vp->next, attrid) != NULL)
                 *more = count;
             break;
         }
@@ -304,27 +309,22 @@ gss_eap_radius_attr_provider::getAttribute(int attrid,
     if (vp == NULL && *more == 0)
         return false;
 
-    if (vp->type == PW_TYPE_STRING) {
-        valueBuf.value = (void *)vp->strvalue;
-        valueBuf.length = vp->lvalue;
-    } else {
-        valueBuf.value = (void *)&vp->lvalue;
-        valueBuf.length = 4;
-    }
+    if (value != GSS_C_NO_BUFFER) {
+        gss_buffer_desc valueBuf;
+
+        valueBuf.value = (void *)vp->vp_octets;
+        valueBuf.length = vp->length;
 
-    if (value != GSS_C_NO_BUFFER)
         duplicateBuffer(valueBuf, value);
+    }
 
-    if (display_value != GSS_C_NO_BUFFER &&
-        isPrintableAttributeP(vp)) {
-        if (rc_avpair_tostr(m_rh, vp, name, NAME_LENGTH,
-                            displayString, AUTH_STRING_LEN) != 0) {
-            gss_release_buffer(&tmpMinor, value);
-            return false;
-        }
+    if (display_value != GSS_C_NO_BUFFER) {
+        char displayString[MAX_STRING_LEN];
+        gss_buffer_desc displayBuf;
 
+        displayBuf.length = vp_prints_value(displayString,
+                                            sizeof(displayString), vp, 0);
         displayBuf.value = (void *)displayString;
-        displayBuf.length = strlen(displayString);
 
         duplicateBuffer(displayBuf, display_value);
     }
@@ -338,15 +338,15 @@ gss_eap_radius_attr_provider::getAttribute(int attrid,
 }
 
 bool
-gss_eap_radius_attr_provider::getFragmentedAttribute(int attribute,
-                                                     int vendor,
+gss_eap_radius_attr_provider::getFragmentedAttribute(uint16_t attribute,
+                                                     uint16_t vendor,
                                                      int *authenticated,
                                                      int *complete,
                                                      gss_buffer_t value) const
 {
     OM_uint32 major, minor;
 
-    major = getBufferFromAvps(&minor, m_avps, attribute, vendor, value, TRUE);
+    major = gssEapRadiusGetAvp(&minor, m_vps, attribute, vendor, value, TRUE);
 
     if (authenticated != NULL)
         *authenticated = m_authenticated;
@@ -357,7 +357,7 @@ gss_eap_radius_attr_provider::getFragmentedAttribute(int attribute,
 }
 
 bool
-gss_eap_radius_attr_provider::getAttribute(int attrid,
+gss_eap_radius_attr_provider::getAttribute(uint32_t attrid,
                                            int *authenticated,
                                            int *complete,
                                            gss_buffer_t value,
@@ -377,14 +377,14 @@ gss_eap_radius_attr_provider::mapToAny(int authenticated,
     if (authenticated && !m_authenticated)
         return (gss_any_t)NULL;
 
-    return (gss_any_t)copyAvps(m_avps);
+    return (gss_any_t)paircopy(m_vps);
 }
 
 void
 gss_eap_radius_attr_provider::releaseAnyNameMapping(gss_buffer_t type_id,
                                                     gss_any_t input) const
 {
-    rc_avpair_free((VALUE_PAIR *)input);
+    pairfree((VALUE_PAIR **)&input);
 }
 
 bool
@@ -409,42 +409,78 @@ gss_eap_radius_attr_provider::createAttrContext(void)
 }
 
 OM_uint32
-addAvpFromBuffer(OM_uint32 *minor,
-                 rc_handle *rh,
-                 VALUE_PAIR **vp,
-                 int type,
-                 int vendor,
-                 gss_buffer_t buffer)
-{
-    if (rc_avpair_add(rh, vp, type,
-                      buffer->value, buffer->length, vendor) == NULL) {
-        return GSS_S_FAILURE;
-    }
+gssEapRadiusAddAvp(OM_uint32 *minor,
+                   rs_handle *rh,
+                   VALUE_PAIR **vps,
+                   uint16_t vattrid,
+                   uint16_t vendor,
+                   gss_buffer_t buffer)
+{
+    uint32_t attrid = VENDORATTR(vendor, vattrid);
+    unsigned char *p = (unsigned char *)buffer->value;
+    size_t remain = buffer->length;
+
+    do {
+        VALUE_PAIR *vp;
+        size_t n = remain;
+
+        if (n > MAX_STRING_LEN)
+            n = MAX_STRING_LEN;
+
+        vp = paircreate(attrid, PW_TYPE_OCTETS);
+        if (vp == NULL) {
+            *minor = ENOMEM;
+            return GSS_S_FAILURE;
+        }
+
+        memcpy(vp->vp_octets, p, n);
+        vp->length = n;
+
+        pairadd(vps, vp);
+
+        p += n;
+        remain -= n;
+    } while (remain != 0);
 
     return GSS_S_COMPLETE;
 }
 
 OM_uint32
-getBufferFromAvps(OM_uint32 *minor,
-                  VALUE_PAIR *vps,
-                  int type,
-                  int vendor,
-                  gss_buffer_t buffer,
-                  int concat)
+gssEapRadiusGetRawAvp(OM_uint32 *minor,
+                      VALUE_PAIR *vps,
+                      uint16_t type,
+                      uint16_t vendor,
+                      VALUE_PAIR **vp)
+{
+    uint32_t attr = VENDORATTR(vendor, type);
+
+    *vp = pairfind(vps, attr);
+
+    return (*vp == NULL) ? GSS_S_UNAVAILABLE : GSS_S_COMPLETE;
+}
+
+OM_uint32
+gssEapRadiusGetAvp(OM_uint32 *minor,
+                   VALUE_PAIR *vps,
+                   uint16_t type,
+                   uint16_t vendor,
+                   gss_buffer_t buffer,
+                   int concat)
 {
     VALUE_PAIR *vp;
     unsigned char *p;
+    uint32_t attr = VENDORATTR(vendor, type);
 
     buffer->length = 0;
     buffer->value = NULL;
 
-    vp = rc_avpair_get(vps, type, vendor);
+    vp = pairfind(vps, attr);
     if (vp == NULL)
         return GSS_S_UNAVAILABLE;
 
     do {
-        buffer->length += vp->lvalue;
-    } while (concat && (vp = rc_avpair_get(vp->next, type, vendor)) != NULL);
+        buffer->length += vp->length;
+    } while (concat && (vp = pairfind(vp->next, attr)) != NULL);
 
     buffer->value = GSSEAP_MALLOC(buffer->length);
     if (buffer->value == NULL) {
@@ -454,11 +490,11 @@ getBufferFromAvps(OM_uint32 *minor,
 
     p = (unsigned char *)buffer->value;
 
-    for (vp = rc_avpair_get(vps, type, vendor);
+    for (vp = pairfind(vps, attr);
          concat && vp != NULL;
-         vp = rc_avpair_get(vp->next, type, vendor)) {
-        memcpy(p, vp->strvalue, vp->lvalue);
-        p += vp->lvalue;
+         vp = pairfind(vp->next, attr)) {
+        memcpy(p, vp->vp_octets, vp->length);
+        p += vp->length;
     }
 
     *minor = 0;
@@ -466,6 +502,15 @@ getBufferFromAvps(OM_uint32 *minor,
 }
 
 OM_uint32
+gssEapRadiusFreeAvps(OM_uint32 *minor,
+                     VALUE_PAIR **vps)
+{
+    pairfree(vps);
+    *minor = 0;
+    return GSS_S_COMPLETE;
+}
+
+OM_uint32
 gssEapRadiusAttrProviderInit(OM_uint32 *minor)
 {
     return gss_eap_radius_attr_provider::init()
@@ -479,47 +524,92 @@ gssEapRadiusAttrProviderFinalize(OM_uint32 *minor)
     return GSS_S_COMPLETE;
 }
 
+/* partition error namespace so it does not conflict with krb5 */
+#define ERROR_TABLE_BASE_rse (46882560L)
+
+#define RS_TO_COM_ERR(rse)                  ((rse) == RSE_OK ? 0 : (rse) + ERROR_TABLE_BASE_rse)
+#define COM_TO_RS_ERR(err)                  ((err) > ERROR_TABLE_BASE_rse && \
+                                             (err) <= (ERROR_TABLE_BASE_rse + RSE_SOME_ERROR) ? \
+                                             (err) - ERROR_TABLE_BASE_rse : RSE_SOME_ERROR)
+
 OM_uint32
-gssEapRadiusAllocHandle(OM_uint32 *minor,
-                        const gss_cred_id_t cred,
-                        rc_handle **pHandle)
+gssEapRadiusMapError(OM_uint32 *minor,
+                     struct rs_error *err)
 {
-    rc_handle *rh;
-    const char *config = RC_CONFIG_FILE;
+    int code = RSE_OK;
 
-    *pHandle = NULL;
+    if (err != NULL)
+        code = rs_err_code(err, 0);
+    else
+        code = RSE_SOME_ERROR;
 
-    if (cred != GSS_C_NO_CREDENTIAL && cred->radiusConfigFile != NULL)
-        config = cred->radiusConfigFile;
+    *minor = RS_TO_COM_ERR(code);
 
-    rh = rc_read_config((char *)config);
-    if (rh == NULL) {
-        *minor = errno;
-        rc_config_free(rh);
-        return GSS_S_FAILURE;
+    gssEapSaveStatusInfo(*minor, "radsec: %s", rs_err_msg(err, 0));
+
+    rs_err_free(err);
+    return GSS_S_FAILURE;
+}
+
+OM_uint32
+gssEapRadiusAllocConn(OM_uint32 *minor,
+                      const gss_cred_id_t cred,
+                      gss_ctx_id_t ctx)
+{
+    struct gss_eap_acceptor_ctx *actx = &ctx->acceptorCtx;
+    const char *configFile = NULL;
+    const char *configStanza = "gss-eap";
+    struct rs_error *err;
+
+    assert(actx->radHandle == NULL);
+    assert(actx->radConn == NULL);
+
+    if (cred != GSS_C_NO_CREDENTIAL) {
+        if (cred->radiusConfigFile != NULL)
+            configFile = cred->radiusConfigFile;
+        if (cred->radiusConfigStanza != NULL)
+            configStanza = cred->radiusConfigStanza;
     }
 
-    if (rc_read_dictionary(rh, rc_conf_str(rh, (char *)"dictionary")) != 0) {
-        *minor = errno;
-        return GSS_S_FAILURE;
+    err = radiusAllocHandle(configFile, &actx->radHandle);
+    if (err != NULL || actx->radHandle == NULL) {
+        return gssEapRadiusMapError(minor, err);
     }
 
-    *pHandle = rh;
+    if (rs_conn_create(actx->radHandle, &actx->radConn, configStanza) != 0) {
+        return gssEapRadiusMapError(minor, rs_err_conn_pop(actx->radConn));
+    }
+
+    /* XXX TODO rs_conn_select_server does not exist yet */
+#if 0
+    if (actx->radServer != NULL) {
+        if (rs_conn_select_server(actx->radConn, actx->radServer) != 0)
+            return gssEapRadiusMapError(minor, rs_err_conn_pop(actx->radConn));
+    }
+#endif
+
+    *minor = 0;
     return GSS_S_COMPLETE;
 }
 
 /*
- * This is a super-inefficient coding but the API is going to change
- * as are the data structures, so not putting a lot of work in now.
+ * Encoding is:
+ * 4 octet NBO attribute ID | 4 octet attribute length | attribute data
  */
 static size_t
 avpSize(const VALUE_PAIR *vp)
 {
-    return NAME_LENGTH + 1 + 12 + AUTH_STRING_LEN + 1;
+    size_t size = 4 + 1;
+
+    if (vp != NULL)
+        size += vp->length;
+
+    return size;
 }
 
 static bool
-avpExport(const VALUE_PAIR *vp,
+avpExport(rs_handle *rh,
+          const VALUE_PAIR *vp,
           unsigned char **pBuffer,
           size_t *pRemain)
 {
@@ -528,68 +618,103 @@ avpExport(const VALUE_PAIR *vp,
 
     assert(remain >= avpSize(vp));
 
-    memcpy(p, vp->name, NAME_LENGTH + 1);
-    p += NAME_LENGTH + 1;
-    remain -= NAME_LENGTH + 1;
-
-    store_uint32_be(vp->attribute, &p[0]);
-    store_uint32_be(vp->type,      &p[4]);
-    store_uint32_be(vp->lvalue,    &p[8]);
-
-    p += 12;
-    remain -= 12;
+    store_uint32_be(vp->attribute, p);
 
-    memcpy(p, vp->strvalue, AUTH_STRING_LEN + 1);
-    p += AUTH_STRING_LEN + 1;
-    remain -= AUTH_STRING_LEN + 1;
+    switch (vp->type) {
+    case PW_TYPE_INTEGER:
+    case PW_TYPE_IPADDR:
+    case PW_TYPE_DATE:
+        p[4] = 4;
+        store_uint32_be(vp->lvalue, p + 5);
+        break;
+    default:
+        assert(vp->length <= MAX_STRING_LEN);
+        p[4] = (uint8_t)vp->length;
+        memcpy(p + 5, vp->vp_octets, vp->length);
+        break;
+    }
 
-    *pBuffer = p;
-    *pRemain = remain;
+    *pBuffer += 5 + p[4];
+    *pRemain -= 5 + p[4];
 
     return true;
 
 }
 
 static bool
-avpImport(VALUE_PAIR **pVp,
+avpImport(rs_handle *rh,
+          VALUE_PAIR **pVp,
           unsigned char **pBuffer,
           size_t *pRemain)
 {
     unsigned char *p = *pBuffer;
     size_t remain = *pRemain;
-    VALUE_PAIR *vp;
+    VALUE_PAIR *vp = NULL;
+    DICT_ATTR *da;
+    OM_uint32 attrid;
 
-    if (remain < avpSize(NULL)) {
-        return false;
-    }
+    if (remain < avpSize(NULL))
+        goto fail;
 
-    vp = (VALUE_PAIR *)GSSEAP_CALLOC(1, sizeof(*vp));
+    attrid = load_uint32_be(p);
+    p += 4;
+    remain -= 4;
+
+    da = dict_attrbyvalue(attrid);
+    if (da == NULL)
+        goto fail;
+
+    vp = pairalloc(da);
     if (vp == NULL) {
         throw new std::bad_alloc;
-        return false;
+        goto fail;
     }
-    vp->next = NULL;
 
-    memcpy(vp->name, p, NAME_LENGTH + 1);
-    p += NAME_LENGTH + 1;
-    remain -= NAME_LENGTH + 1;
+    if (remain < p[0])
+        goto fail;
 
-    vp->attribute = load_uint32_be(&p[0]);
-    vp->type      = load_uint32_be(&p[4]);
-    vp->lvalue    = load_uint32_be(&p[8]);
+    switch (vp->type) {
+    case PW_TYPE_INTEGER:
+    case PW_TYPE_IPADDR:
+    case PW_TYPE_DATE:
+        if (p[0] != 4)
+            goto fail;
 
-    p += 12;
-    remain -= 12;
+        vp->length = 4;
+        vp->lvalue = load_uint32_be(p + 1);
+        p += 5;
+        remain -= 5;
+        break;
+    case PW_TYPE_STRING:
+        /* check enough room to NUL terminate */
+        if (p[0] == MAX_STRING_LEN)
+            goto fail;
+        else
+        /* fallthrough */
+    default:
+        if (p[0] > MAX_STRING_LEN)
+            goto fail;
 
-    memcpy(vp->strvalue, p, AUTH_STRING_LEN + 1);
-    p += AUTH_STRING_LEN + 1;
-    remain -= AUTH_STRING_LEN + 1;
+        vp->length = (uint32_t)p[0];
+        memcpy(vp->vp_octets, p + 1, vp->length);
+
+        if (vp->type == PW_TYPE_STRING)
+            vp->vp_strvalue[vp->length] = '\0';
+
+        p += 1 + vp->length;
+        remain -= 1 + vp->length;
+        break;
+    }
 
     *pVp = vp;
     *pBuffer = p;
     *pRemain = remain;
 
     return true;
+
+fail:
+    pairbasicfree(vp);
+    return false;
 }
 
 bool
@@ -598,13 +723,27 @@ gss_eap_radius_attr_provider::initFromBuffer(const gss_eap_attr_ctx *ctx,
 {
     unsigned char *p = (unsigned char *)buffer->value;
     size_t remain = buffer->length;
-    OM_uint32 count;
-    VALUE_PAIR **pNext = &m_avps;
+    OM_uint32 configFileLen, count;
+    VALUE_PAIR **pNext = &m_vps;
 
     if (!gss_eap_attr_provider::initFromBuffer(ctx, buffer))
         return false;
 
-    if (!initFromGssCred(GSS_C_NO_CREDENTIAL))
+    if (remain < 4)
+        return false;
+
+    configFileLen = load_uint32_be(p);
+    p += 4;
+    remain -= 4;
+
+    if (remain < configFileLen)
+        return false;
+
+    std::string configFile((char *)p, configFileLen);
+    p += configFileLen;
+    remain -= configFileLen;
+
+    if (!allocRadHandle(configFile))
         return false;
 
     if (remain < 4)
@@ -617,7 +756,7 @@ gss_eap_radius_attr_provider::initFromBuffer(const gss_eap_attr_ctx *ctx,
     do {
         VALUE_PAIR *attr;
 
-        if (!avpImport(&attr, &p, &remain))
+        if (!avpImport(m_rh, &attr, &p, &remain))
             return false;
 
         *pNext = attr;
@@ -638,9 +777,9 @@ gss_eap_radius_attr_provider::exportToBuffer(gss_buffer_t buffer) const
     OM_uint32 count = 0;
     VALUE_PAIR *vp;
     unsigned char *p;
-    size_t remain = 4;
+    size_t remain = 4 + m_configFile.length() + 4;
 
-    for (vp = m_avps; vp != NULL; vp = vp->next) {
+    for (vp = m_vps; vp != NULL; vp = vp->next) {
         remain += avpSize(vp);
         count++;
     }
@@ -654,12 +793,20 @@ gss_eap_radius_attr_provider::exportToBuffer(gss_buffer_t buffer) const
 
     p = (unsigned char *)buffer->value;
 
+    store_uint32_be(m_configFile.length(), p);
+    p += 4;
+    remain -= 4;
+
+    memcpy(p, m_configFile.c_str(), m_configFile.length());
+    p += m_configFile.length();
+    remain -= m_configFile.length();
+
     store_uint32_be(count, p);
     p += 4;
     remain -= 4;
 
-    for (vp = m_avps; vp != NULL; vp = vp->next) {
-        avpExport(vp, &p, &remain);
+    for (vp = m_vps; vp != NULL; vp = vp->next) {
+        avpExport(m_rh, vp, &p, &remain);
     }
 
     assert(remain == 0);
@@ -670,7 +817,7 @@ gss_eap_radius_attr_provider::getExpiryTime(void) const
 {
     VALUE_PAIR *vp;
 
-    vp = rc_avpair_get(m_avps, PW_SESSION_TIMEOUT, 0);
+    vp = pairfind(m_vps, PW_SESSION_TIMEOUT);
     if (vp == NULL || vp->lvalue == 0)
         return 0;