1 files changed, 147 insertions, 0 deletions
diff --git a/src/contrib/libngtcp2/ngtcp2/lib/ngtcp2_cid.c b/src/contrib/libngtcp2/ngtcp2/lib/ngtcp2_cid.c
new file mode 100644
index 0000000..f3b92b5
--- /dev/null
+++ b/src/contrib/libngtcp2/ngtcp2/lib/ngtcp2_cid.c
@@ -0,0 +1,147 @@
+/*
+ * ngtcp2
+ *
+ * Copyright (c) 2018 ngtcp2 contributors
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#include "ngtcp2_cid.h"
+
+#include <assert.h>
+#include <string.h>
+
+#include "ngtcp2_path.h"
+#include "ngtcp2_str.h"
+
+void ngtcp2_cid_zero(ngtcp2_cid *cid) { memset(cid, 0, sizeof(*cid)); }
+
+void ngtcp2_cid_init(ngtcp2_cid *cid, const uint8_t *data, size_t datalen) {
+  assert(datalen <= NGTCP2_MAX_CIDLEN);
+
+  cid->datalen = datalen;
+  if (datalen) {
+    ngtcp2_cpymem(cid->data, data, datalen);
+  }
+}
+
+int ngtcp2_cid_eq(const ngtcp2_cid *cid, const ngtcp2_cid *other) {
+  return cid->datalen == other->datalen &&
+         0 == memcmp(cid->data, other->data, cid->datalen);
+}
+
+int ngtcp2_cid_less(const ngtcp2_cid *lhs, const ngtcp2_cid *rhs) {
+  int s = lhs->datalen < rhs->datalen;
+  size_t n = s ? lhs->datalen : rhs->datalen;
+  int c = memcmp(lhs->data, rhs->data, n);
+
+  return c < 0 || (c == 0 && s);
+}
+
+int ngtcp2_cid_empty(const ngtcp2_cid *cid) { return cid->datalen == 0; }
+
+void ngtcp2_scid_init(ngtcp2_scid *scid, uint64_t seq, const ngtcp2_cid *cid) {
+  scid->pe.index = NGTCP2_PQ_BAD_INDEX;
+  scid->seq = seq;
+  scid->cid = *cid;
+  scid->retired_ts = UINT64_MAX;
+  scid->flags = NGTCP2_SCID_FLAG_NONE;
+}
+
+void ngtcp2_scid_copy(ngtcp2_scid *dest, const ngtcp2_scid *src) {
+  ngtcp2_scid_init(dest, src->seq, &src->cid);
+  dest->retired_ts = src->retired_ts;
+  dest->flags = src->flags;
+}
+
+void ngtcp2_dcid_init(ngtcp2_dcid *dcid, uint64_t seq, const ngtcp2_cid *cid,
+                      const uint8_t *token) {
+  dcid->seq = seq;
+  dcid->cid = *cid;
+  if (token) {
+    memcpy(dcid->token, token, NGTCP2_STATELESS_RESET_TOKENLEN);
+    dcid->flags = NGTCP2_DCID_FLAG_TOKEN_PRESENT;
+  } else {
+    dcid->flags = NGTCP2_DCID_FLAG_NONE;
+  }
+  ngtcp2_path_storage_zero(&dcid->ps);
+  dcid->retired_ts = UINT64_MAX;
+  dcid->bound_ts = UINT64_MAX;
+  dcid->bytes_sent = 0;
+  dcid->bytes_recv = 0;
+  dcid->max_udp_payload_size = NGTCP2_MAX_UDP_PAYLOAD_SIZE;
+}
+
+void ngtcp2_dcid_set_token(ngtcp2_dcid *dcid, const uint8_t *token) {
+  assert(token);
+
+  dcid->flags |= NGTCP2_DCID_FLAG_TOKEN_PRESENT;
+  memcpy(dcid->token, token, NGTCP2_STATELESS_RESET_TOKENLEN);
+}
+
+void ngtcp2_dcid_set_path(ngtcp2_dcid *dcid, const ngtcp2_path *path) {
+  ngtcp2_path_copy(&dcid->ps.path, path);
+}
+
+void ngtcp2_dcid_copy(ngtcp2_dcid *dest, const ngtcp2_dcid *src) {
+  ngtcp2_dcid_init(dest, src->seq, &src->cid,
+                   (src->flags & NGTCP2_DCID_FLAG_TOKEN_PRESENT) ? src->token
+                                                                 : NULL);
+  ngtcp2_path_copy(&dest->ps.path, &src->ps.path);
+  dest->retired_ts = src->retired_ts;
+  dest->bound_ts = src->bound_ts;
+  dest->flags = src->flags;
+  dest->bytes_sent = src->bytes_sent;
+  dest->bytes_recv = src->bytes_recv;
+  dest->max_udp_payload_size = src->max_udp_payload_size;
+}
+
+void ngtcp2_dcid_copy_cid_token(ngtcp2_dcid *dest, const ngtcp2_dcid *src) {
+  dest->seq = src->seq;
+  dest->cid = src->cid;
+  if (src->flags & NGTCP2_DCID_FLAG_TOKEN_PRESENT) {
+    dest->flags |= NGTCP2_DCID_FLAG_TOKEN_PRESENT;
+    memcpy(dest->token, src->token, NGTCP2_STATELESS_RESET_TOKENLEN);
+  } else if (dest->flags & NGTCP2_DCID_FLAG_TOKEN_PRESENT) {
+    dest->flags &= (uint8_t)~NGTCP2_DCID_FLAG_TOKEN_PRESENT;
+  }
+}
+
+int ngtcp2_dcid_verify_uniqueness(ngtcp2_dcid *dcid, uint64_t seq,
+                                  const ngtcp2_cid *cid, const uint8_t *token) {
+  if (dcid->seq == seq) {
+    return ngtcp2_cid_eq(&dcid->cid, cid) &&
+                   (dcid->flags & NGTCP2_DCID_FLAG_TOKEN_PRESENT) &&
+                   memcmp(dcid->token, token,
+                          NGTCP2_STATELESS_RESET_TOKENLEN) == 0
+               ? 0
+               : NGTCP2_ERR_PROTO;
+  }
+
+  return !ngtcp2_cid_eq(&dcid->cid, cid) ? 0 : NGTCP2_ERR_PROTO;
+}
+
+int ngtcp2_dcid_verify_stateless_reset_token(const ngtcp2_dcid *dcid,
+                                             const uint8_t *token) {
+  return (dcid->flags & NGTCP2_DCID_FLAG_TOKEN_PRESENT) &&
+                 ngtcp2_cmemeq(dcid->token, token,
+                               NGTCP2_STATELESS_RESET_TOKENLEN)
+             ? 0
+             : NGTCP2_ERR_INVALID_ARGUMENT;
+}