initial libradsec port

[mech_eap.git] / export_sec_context.c

diff --git a/export_sec_context.c b/export_sec_context.c
index 54e5781..46bf118 100644 (file)
--- a/export_sec_context.c
+++ b/export_sec_context.c
@@ -37,13 +37,50 @@ gssEapExportPartialContext(OM_uint32 *minor,
                            gss_ctx_id_t ctx,
                            gss_buffer_t token)
 {
-    token->length = 0;
-    token->value = NULL;
+    OM_uint32 major, tmpMinor;
+    size_t length, serverLen = 0;
+    unsigned char *p;
+    char serverBuf[MAXHOSTNAMELEN];
 
-    /*
-     * The format of this token awaits definition by libradsec.
-     */
-    return GSS_S_COMPLETE;
+    if (ctx->acceptorCtx.radConn != NULL &&
+        rs_conn_get_current_server(ctx->acceptorCtx.radConn,
+                                   serverBuf, sizeof(serverBuf)) == 0)
+        serverLen = strlen(serverBuf);
+
+    length = 4 + serverLen + 4 + ctx->acceptorCtx.state.length;
+
+    token->value = GSSEAP_MALLOC(length);
+    if (token->value == NULL) {
+        *minor = ENOMEM;
+        major = GSS_S_FAILURE;
+        goto cleanup;
+    }
+    token->length = length;
+
+    p = (unsigned char *)token->value;
+
+    store_uint32_be(serverLen, p);
+    p += 4;
+    if (serverLen != 0) {
+        memcpy(p, serverBuf, serverLen);
+        p += serverLen;
+    }
+
+    store_uint32_be(ctx->acceptorCtx.state.length, p);
+    p += 4;
+    if (ctx->acceptorCtx.state.length != 0) {
+        memcpy(p, ctx->acceptorCtx.state.value,
+               ctx->acceptorCtx.state.length);
+        p += ctx->acceptorCtx.state.length;
+    }
+
+    assert(p == (unsigned char *)token->value + token->length);
+
+cleanup:
+    if (GSS_ERROR(major))
+        gss_release_buffer(&tmpMinor, token);
+
+    return major;
 }
 
 static OM_uint32
@@ -86,12 +123,14 @@ gssEapExportSecContext(OM_uint32 *minor,
      * contexts.
      */
     if (!CTX_IS_INITIATOR(ctx) && !CTX_IS_ESTABLISHED(ctx)) {
+        assert((ctx->flags & CTX_FLAG_KRB_REAUTH_GSS) == 0);
+
         major = gssEapExportPartialContext(minor, ctx, &partialCtx);
         if (GSS_ERROR(major))
             goto cleanup;
     }
 
-    length  = 16;                               /* version, state, flags, etc */
+    length  = 16;                               /* version, state, flags, */
     length += 4 + ctx->mechanismUsed->length;   /* mechanismUsed */
     length += 12 + key.length;                  /* rfc3961Key.value */
     length += 4 + initiatorName.length;         /* initiatorName.value */
@@ -159,8 +198,15 @@ gss_export_sec_context(OM_uint32 *minor,
     OM_uint32 major, tmpMinor;
     gss_ctx_id_t ctx = *context_handle;
 
-    if (ctx == GSS_C_NO_CONTEXT)
+    interprocess_token->length = 0;
+    interprocess_token->value = NULL;
+
+    if (ctx == GSS_C_NO_CONTEXT) {
+        *minor = EINVAL;
         return GSS_S_NO_CONTEXT;
+    }
+
+    *minor = 0;
 
     GSSEAP_MUTEX_LOCK(&ctx->mutex);