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-rw-r--r--third_party/heimdal/lib/gssapi/mech/gss_utils.c381
1 files changed, 381 insertions, 0 deletions
diff --git a/third_party/heimdal/lib/gssapi/mech/gss_utils.c b/third_party/heimdal/lib/gssapi/mech/gss_utils.c
new file mode 100644
index 0000000..62fa262
--- /dev/null
+++ b/third_party/heimdal/lib/gssapi/mech/gss_utils.c
@@ -0,0 +1,381 @@
+/*-
+ * Copyright (c) 2005 Doug Rabson
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD: src/lib/libgssapi/gss_utils.c,v 1.1 2005/12/29 14:40:20 dfr Exp $
+ */
+
+#include "mech_locl.h"
+
+static OM_uint32
+_gss_copy_oid(OM_uint32 *minor_status,
+ gss_const_OID from_oid,
+ gss_OID to_oid)
+{
+ size_t len = from_oid->length;
+
+ *minor_status = 0;
+ to_oid->elements = malloc(len);
+ if (!to_oid->elements) {
+ to_oid->length = 0;
+ *minor_status = ENOMEM;
+ return GSS_S_FAILURE;
+ }
+ to_oid->length = (OM_uint32)len;
+ memcpy(to_oid->elements, from_oid->elements, len);
+ return (GSS_S_COMPLETE);
+}
+
+OM_uint32
+_gss_free_oid(OM_uint32 *minor_status, gss_OID oid)
+{
+ *minor_status = 0;
+ if (oid->elements) {
+ free(oid->elements);
+ oid->elements = NULL;
+ oid->length = 0;
+ }
+ return (GSS_S_COMPLETE);
+}
+
+struct _gss_interned_oid {
+ HEIM_SLIST_ATOMIC_ENTRY(_gss_interned_oid) gio_link;
+ gss_OID_desc gio_oid;
+};
+
+static HEIM_SLIST_ATOMIC_HEAD(_gss_interned_oid_list, _gss_interned_oid) interned_oids =
+HEIM_SLIST_HEAD_INITIALIZER(interned_oids);
+
+extern gss_OID _gss_ot_internal[];
+extern size_t _gss_ot_internal_count;
+
+static OM_uint32
+intern_oid_static(OM_uint32 *minor_status,
+ gss_const_OID from_oid,
+ gss_OID *to_oid)
+{
+ size_t i;
+
+ /* statically allocated OIDs */
+ for (i = 0; i < _gss_ot_internal_count; i++) {
+ if (gss_oid_equal(_gss_ot_internal[i], from_oid)) {
+ *minor_status = 0;
+ *to_oid = _gss_ot_internal[i];
+ return GSS_S_COMPLETE;
+ }
+ }
+
+ return GSS_S_CONTINUE_NEEDED;
+}
+
+OM_uint32
+_gss_intern_oid(OM_uint32 *minor_status,
+ gss_const_OID from_oid,
+ gss_OID *to_oid)
+{
+ OM_uint32 major_status;
+ struct _gss_interned_oid *iop;
+
+ major_status = intern_oid_static(minor_status, from_oid, to_oid);
+ if (major_status != GSS_S_CONTINUE_NEEDED)
+ return major_status;
+
+ HEIM_SLIST_ATOMIC_FOREACH(iop, &interned_oids, gio_link) {
+ if (gss_oid_equal(&iop->gio_oid, from_oid)) {
+ *minor_status = 0;
+ *to_oid = &iop->gio_oid;
+ return GSS_S_COMPLETE;
+ }
+ }
+
+ iop = malloc(sizeof(*iop));
+ if (iop == NULL) {
+ *minor_status = ENOMEM;
+ return GSS_S_FAILURE;
+ }
+
+ major_status = _gss_copy_oid(minor_status, from_oid, &iop->gio_oid);
+ if (GSS_ERROR(major_status)) {
+ free(iop);
+ return major_status;
+ }
+
+ HEIM_SLIST_ATOMIC_INSERT_HEAD(&interned_oids, iop, gio_link);
+
+ *minor_status = 0;
+ *to_oid = &iop->gio_oid;
+
+ return GSS_S_COMPLETE;
+}
+
+OM_uint32
+_gss_copy_buffer(OM_uint32 *minor_status,
+ const gss_buffer_t from_buf, gss_buffer_t to_buf)
+{
+ size_t len = from_buf->length;
+
+ *minor_status = 0;
+ to_buf->value = malloc(len);
+ if (!to_buf->value) {
+ *minor_status = ENOMEM;
+ to_buf->length = 0;
+ return GSS_S_FAILURE;
+ }
+ to_buf->length = len;
+ memcpy(to_buf->value, from_buf->value, len);
+ return (GSS_S_COMPLETE);
+}
+
+OM_uint32
+_gss_secure_release_buffer(OM_uint32 *minor_status,
+ gss_buffer_t buffer)
+{
+ if (buffer->value)
+ memset_s(buffer->value, buffer->length, 0, buffer->length);
+
+ return gss_release_buffer(minor_status, buffer);
+}
+
+OM_uint32
+_gss_secure_release_buffer_set(OM_uint32 *minor_status,
+ gss_buffer_set_t *buffer_set)
+{
+ size_t i;
+ OM_uint32 minor;
+
+ *minor_status = 0;
+
+ if (*buffer_set == GSS_C_NO_BUFFER_SET)
+ return GSS_S_COMPLETE;
+
+ for (i = 0; i < (*buffer_set)->count; i++)
+ _gss_secure_release_buffer(&minor, &((*buffer_set)->elements[i]));
+
+ (*buffer_set)->count = 0;
+
+ return gss_release_buffer_set(minor_status, buffer_set);
+}
+
+void
+_gss_mg_encode_le_uint64(uint64_t n, uint8_t *p)
+{
+ p[0] = (n >> 0 ) & 0xFF;
+ p[1] = (n >> 8 ) & 0xFF;
+ p[2] = (n >> 16) & 0xFF;
+ p[3] = (n >> 24) & 0xFF;
+ p[4] = (n >> 32) & 0xFF;
+ p[5] = (n >> 40) & 0xFF;
+ p[6] = (n >> 48) & 0xFF;
+ p[7] = (n >> 56) & 0xFF;
+}
+
+void
+_gss_mg_decode_le_uint64(const void *ptr, uint64_t *n)
+{
+ const uint8_t *p = ptr;
+ *n = ((uint64_t)p[0] << 0)
+ | ((uint64_t)p[1] << 8)
+ | ((uint64_t)p[2] << 16)
+ | ((uint64_t)p[3] << 24)
+ | ((uint64_t)p[4] << 32)
+ | ((uint64_t)p[5] << 40)
+ | ((uint64_t)p[6] << 48)
+ | ((uint64_t)p[7] << 56);
+}
+
+void
+_gss_mg_encode_be_uint64(uint64_t n, uint8_t *p)
+{
+ p[0] = (n >> 56) & 0xFF;
+ p[1] = (n >> 48) & 0xFF;
+ p[2] = (n >> 40) & 0xFF;
+ p[3] = (n >> 32) & 0xFF;
+ p[4] = (n >> 24) & 0xFF;
+ p[5] = (n >> 16) & 0xFF;
+ p[6] = (n >> 8 ) & 0xFF;
+ p[7] = (n >> 0 ) & 0xFF;
+}
+
+void
+_gss_mg_decode_be_uint64(const void *ptr, uint64_t *n)
+{
+ const uint8_t *p = ptr;
+ *n = ((uint64_t)p[0] << 56)
+ | ((uint64_t)p[1] << 48)
+ | ((uint64_t)p[2] << 40)
+ | ((uint64_t)p[3] << 32)
+ | ((uint64_t)p[4] << 24)
+ | ((uint64_t)p[5] << 16)
+ | ((uint64_t)p[6] << 8)
+ | ((uint64_t)p[7] << 0);
+}
+
+void
+_gss_mg_encode_le_uint32(uint32_t n, uint8_t *p)
+{
+ p[0] = (n >> 0 ) & 0xFF;
+ p[1] = (n >> 8 ) & 0xFF;
+ p[2] = (n >> 16) & 0xFF;
+ p[3] = (n >> 24) & 0xFF;
+}
+
+void
+_gss_mg_decode_le_uint32(const void *ptr, uint32_t *n)
+{
+ const uint8_t *p = ptr;
+ *n = ((uint32_t)p[0] << 0)
+ | ((uint32_t)p[1] << 8)
+ | ((uint32_t)p[2] << 16)
+ | ((uint32_t)p[3] << 24);
+}
+
+void
+_gss_mg_encode_be_uint32(uint32_t n, uint8_t *p)
+{
+ p[0] = (n >> 24) & 0xFF;
+ p[1] = (n >> 16) & 0xFF;
+ p[2] = (n >> 8 ) & 0xFF;
+ p[3] = (n >> 0 ) & 0xFF;
+}
+
+void
+_gss_mg_decode_be_uint32(const void *ptr, uint32_t *n)
+{
+ const uint8_t *p = ptr;
+ *n = (p[0] << 24) | (p[1] << 16) | (p[2] << 8) | (p[3] << 0);
+}
+
+void
+_gss_mg_encode_le_uint16(uint16_t n, uint8_t *p)
+{
+ p[0] = (n >> 0 ) & 0xFF;
+ p[1] = (n >> 8 ) & 0xFF;
+}
+
+void
+_gss_mg_decode_le_uint16(const void *ptr, uint16_t *n)
+{
+ const uint8_t *p = ptr;
+ *n = (p[0] << 0) | (p[1] << 8);
+}
+
+void
+_gss_mg_encode_be_uint16(uint16_t n, uint8_t *p)
+{
+ p[0] = (n >> 8) & 0xFF;
+ p[1] = (n >> 0) & 0xFF;
+}
+
+void
+_gss_mg_decode_be_uint16(const void *ptr, uint16_t *n)
+{
+ const uint8_t *p = ptr;
+ *n = (p[0] << 24) | (p[1] << 16);
+}
+
+OM_uint32
+_gss_mg_ret_oid(OM_uint32 *minor,
+ krb5_storage *sp,
+ gss_OID *oidp)
+{
+ krb5_data data;
+ gss_OID_desc oid;
+ OM_uint32 major;
+
+ *minor = 0;
+ *oidp = GSS_C_NO_OID;
+
+ *minor = krb5_ret_data(sp, &data);
+ if (*minor)
+ return GSS_S_FAILURE;
+
+ if (data.length) {
+ oid.length = data.length;
+ oid.elements = data.data;
+
+ major = _gss_intern_oid(minor, &oid, oidp);
+ } else
+ major = GSS_S_COMPLETE;
+
+ krb5_data_free(&data);
+
+ return major;
+}
+
+OM_uint32
+_gss_mg_store_oid(OM_uint32 *minor,
+ krb5_storage *sp,
+ gss_const_OID oid)
+{
+ krb5_data data;
+
+ if (oid) {
+ data.length = oid->length;
+ data.data = oid->elements;
+ } else
+ krb5_data_zero(&data);
+
+ *minor = krb5_store_data(sp, data);
+
+ return *minor ? GSS_S_FAILURE : GSS_S_COMPLETE;
+}
+
+OM_uint32
+_gss_mg_ret_buffer(OM_uint32 *minor,
+ krb5_storage *sp,
+ gss_buffer_t buffer)
+{
+ krb5_data data;
+
+ _mg_buffer_zero(buffer);
+
+ *minor = krb5_ret_data(sp, &data);
+ if (*minor == 0) {
+ if (data.length) {
+ buffer->length = data.length;
+ buffer->value = data.data;
+ } else
+ krb5_data_free(&data);
+ }
+
+ return *minor ? GSS_S_FAILURE : GSS_S_COMPLETE;
+}
+
+OM_uint32
+_gss_mg_store_buffer(OM_uint32 *minor,
+ krb5_storage *sp,
+ gss_const_buffer_t buffer)
+{
+ krb5_data data;
+
+ if (buffer) {
+ data.length = buffer->length;
+ data.data = buffer->value;
+ } else
+ krb5_data_zero(&data);
+
+ *minor = krb5_store_data(sp, data);
+
+ return *minor ? GSS_S_FAILURE : GSS_S_COMPLETE;
+}
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