1 files changed, 594 insertions, 0 deletions
diff --git a/src/trunnel/extension.c b/src/trunnel/extension.c
new file mode 100644
index 0000000000..538ac62928
--- /dev/null
+++ b/src/trunnel/extension.c
@@ -0,0 +1,594 @@
+/* extension.c -- generated by Trunnel v1.5.3.
+ * https://gitweb.torproject.org/trunnel.git
+ * You probably shouldn't edit this file.
+ */
+#include <stdlib.h>
+#include "trunnel-impl.h"
+
+#include "extension.h"
+
+#define TRUNNEL_SET_ERROR_CODE(obj) \
+  do {                              \
+    (obj)->trunnel_error_code_ = 1; \
+  } while (0)
+
+#if defined(__COVERITY__) || defined(__clang_analyzer__)
+/* If we're running a static analysis tool, we don't want it to complain
+ * that some of our remaining-bytes checks are dead-code. */
+int extension_deadcode_dummy__ = 0;
+#define OR_DEADCODE_DUMMY || extension_deadcode_dummy__
+#else
+#define OR_DEADCODE_DUMMY
+#endif
+
+#define CHECK_REMAINING(nbytes, label)                           \
+  do {                                                           \
+    if (remaining < (nbytes) OR_DEADCODE_DUMMY) {                \
+      goto label;                                                \
+    }                                                            \
+  } while (0)
+
+trn_extension_field_t *
+trn_extension_field_new(void)
+{
+  trn_extension_field_t *val = trunnel_calloc(1, sizeof(trn_extension_field_t));
+  if (NULL == val)
+    return NULL;
+  return val;
+}
+
+/** Release all storage held inside 'obj', but do not free 'obj'.
+ */
+static void
+trn_extension_field_clear(trn_extension_field_t *obj)
+{
+  (void) obj;
+  TRUNNEL_DYNARRAY_WIPE(&obj->field);
+  TRUNNEL_DYNARRAY_CLEAR(&obj->field);
+}
+
+void
+trn_extension_field_free(trn_extension_field_t *obj)
+{
+  if (obj == NULL)
+    return;
+  trn_extension_field_clear(obj);
+  trunnel_memwipe(obj, sizeof(trn_extension_field_t));
+  trunnel_free_(obj);
+}
+
+uint8_t
+trn_extension_field_get_field_type(const trn_extension_field_t *inp)
+{
+  return inp->field_type;
+}
+int
+trn_extension_field_set_field_type(trn_extension_field_t *inp, uint8_t val)
+{
+  inp->field_type = val;
+  return 0;
+}
+uint8_t
+trn_extension_field_get_field_len(const trn_extension_field_t *inp)
+{
+  return inp->field_len;
+}
+int
+trn_extension_field_set_field_len(trn_extension_field_t *inp, uint8_t val)
+{
+  inp->field_len = val;
+  return 0;
+}
+size_t
+trn_extension_field_getlen_field(const trn_extension_field_t *inp)
+{
+  return TRUNNEL_DYNARRAY_LEN(&inp->field);
+}
+
+uint8_t
+trn_extension_field_get_field(trn_extension_field_t *inp, size_t idx)
+{
+  return TRUNNEL_DYNARRAY_GET(&inp->field, idx);
+}
+
+uint8_t
+trn_extension_field_getconst_field(const trn_extension_field_t *inp, size_t idx)
+{
+  return trn_extension_field_get_field((trn_extension_field_t*)inp, idx);
+}
+int
+trn_extension_field_set_field(trn_extension_field_t *inp, size_t idx, uint8_t elt)
+{
+  TRUNNEL_DYNARRAY_SET(&inp->field, idx, elt);
+  return 0;
+}
+int
+trn_extension_field_add_field(trn_extension_field_t *inp, uint8_t elt)
+{
+#if SIZE_MAX >= UINT8_MAX
+  if (inp->field.n_ == UINT8_MAX)
+    goto trunnel_alloc_failed;
+#endif
+  TRUNNEL_DYNARRAY_ADD(uint8_t, &inp->field, elt, {});
+  return 0;
+ trunnel_alloc_failed:
+  TRUNNEL_SET_ERROR_CODE(inp);
+  return -1;
+}
+
+uint8_t *
+trn_extension_field_getarray_field(trn_extension_field_t *inp)
+{
+  return inp->field.elts_;
+}
+const uint8_t  *
+trn_extension_field_getconstarray_field(const trn_extension_field_t *inp)
+{
+  return (const uint8_t  *)trn_extension_field_getarray_field((trn_extension_field_t*)inp);
+}
+int
+trn_extension_field_setlen_field(trn_extension_field_t *inp, size_t newlen)
+{
+  uint8_t *newptr;
+#if UINT8_MAX < SIZE_MAX
+  if (newlen > UINT8_MAX)
+    goto trunnel_alloc_failed;
+#endif
+  newptr = trunnel_dynarray_setlen(&inp->field.allocated_,
+                 &inp->field.n_, inp->field.elts_, newlen,
+                 sizeof(inp->field.elts_[0]), (trunnel_free_fn_t) NULL,
+                 &inp->trunnel_error_code_);
+  if (newlen != 0 && newptr == NULL)
+    goto trunnel_alloc_failed;
+  inp->field.elts_ = newptr;
+  return 0;
+ trunnel_alloc_failed:
+  TRUNNEL_SET_ERROR_CODE(inp);
+  return -1;
+}
+const char *
+trn_extension_field_check(const trn_extension_field_t *obj)
+{
+  if (obj == NULL)
+    return "Object was NULL";
+  if (obj->trunnel_error_code_)
+    return "A set function failed on this object";
+  if (TRUNNEL_DYNARRAY_LEN(&obj->field) != obj->field_len)
+    return "Length mismatch for field";
+  return NULL;
+}
+
+ssize_t
+trn_extension_field_encoded_len(const trn_extension_field_t *obj)
+{
+  ssize_t result = 0;
+
+  if (NULL != trn_extension_field_check(obj))
+     return -1;
+
+
+  /* Length of u8 field_type */
+  result += 1;
+
+  /* Length of u8 field_len */
+  result += 1;
+
+  /* Length of u8 field[field_len] */
+  result += TRUNNEL_DYNARRAY_LEN(&obj->field);
+  return result;
+}
+int
+trn_extension_field_clear_errors(trn_extension_field_t *obj)
+{
+  int r = obj->trunnel_error_code_;
+  obj->trunnel_error_code_ = 0;
+  return r;
+}
+ssize_t
+trn_extension_field_encode(uint8_t *output, const size_t avail, const trn_extension_field_t *obj)
+{
+  ssize_t result = 0;
+  size_t written = 0;
+  uint8_t *ptr = output;
+  const char *msg;
+#ifdef TRUNNEL_CHECK_ENCODED_LEN
+  const ssize_t encoded_len = trn_extension_field_encoded_len(obj);
+#endif
+
+  if (NULL != (msg = trn_extension_field_check(obj)))
+    goto check_failed;
+
+#ifdef TRUNNEL_CHECK_ENCODED_LEN
+  trunnel_assert(encoded_len >= 0);
+#endif
+
+  /* Encode u8 field_type */
+  trunnel_assert(written <= avail);
+  if (avail - written < 1)
+    goto truncated;
+  trunnel_set_uint8(ptr, (obj->field_type));
+  written += 1; ptr += 1;
+
+  /* Encode u8 field_len */
+  trunnel_assert(written <= avail);
+  if (avail - written < 1)
+    goto truncated;
+  trunnel_set_uint8(ptr, (obj->field_len));
+  written += 1; ptr += 1;
+
+  /* Encode u8 field[field_len] */
+  {
+    size_t elt_len = TRUNNEL_DYNARRAY_LEN(&obj->field);
+    trunnel_assert(obj->field_len == elt_len);
+    trunnel_assert(written <= avail);
+    if (avail - written < elt_len)
+      goto truncated;
+    if (elt_len)
+      memcpy(ptr, obj->field.elts_, elt_len);
+    written += elt_len; ptr += elt_len;
+  }
+
+
+  trunnel_assert(ptr == output + written);
+#ifdef TRUNNEL_CHECK_ENCODED_LEN
+  {
+    trunnel_assert(encoded_len >= 0);
+    trunnel_assert((size_t)encoded_len == written);
+  }
+
+#endif
+
+  return written;
+
+ truncated:
+  result = -2;
+  goto fail;
+ check_failed:
+  (void)msg;
+  result = -1;
+  goto fail;
+ fail:
+  trunnel_assert(result < 0);
+  return result;
+}
+
+/** As trn_extension_field_parse(), but do not allocate the output
+ * object.
+ */
+static ssize_t
+trn_extension_field_parse_into(trn_extension_field_t *obj, const uint8_t *input, const size_t len_in)
+{
+  const uint8_t *ptr = input;
+  size_t remaining = len_in;
+  ssize_t result = 0;
+  (void)result;
+
+  /* Parse u8 field_type */
+  CHECK_REMAINING(1, truncated);
+  obj->field_type = (trunnel_get_uint8(ptr));
+  remaining -= 1; ptr += 1;
+
+  /* Parse u8 field_len */
+  CHECK_REMAINING(1, truncated);
+  obj->field_len = (trunnel_get_uint8(ptr));
+  remaining -= 1; ptr += 1;
+
+  /* Parse u8 field[field_len] */
+  CHECK_REMAINING(obj->field_len, truncated);
+  TRUNNEL_DYNARRAY_EXPAND(uint8_t, &obj->field, obj->field_len, {});
+  obj->field.n_ = obj->field_len;
+  if (obj->field_len)
+    memcpy(obj->field.elts_, ptr, obj->field_len);
+  ptr += obj->field_len; remaining -= obj->field_len;
+  trunnel_assert(ptr + remaining == input + len_in);
+  return len_in - remaining;
+
+ truncated:
+  return -2;
+ trunnel_alloc_failed:
+  return -1;
+}
+
+ssize_t
+trn_extension_field_parse(trn_extension_field_t **output, const uint8_t *input, const size_t len_in)
+{
+  ssize_t result;
+  *output = trn_extension_field_new();
+  if (NULL == *output)
+    return -1;
+  result = trn_extension_field_parse_into(*output, input, len_in);
+  if (result < 0) {
+    trn_extension_field_free(*output);
+    *output = NULL;
+  }
+  return result;
+}
+trn_extension_t *
+trn_extension_new(void)
+{
+  trn_extension_t *val = trunnel_calloc(1, sizeof(trn_extension_t));
+  if (NULL == val)
+    return NULL;
+  return val;
+}
+
+/** Release all storage held inside 'obj', but do not free 'obj'.
+ */
+static void
+trn_extension_clear(trn_extension_t *obj)
+{
+  (void) obj;
+  {
+
+    unsigned idx;
+    for (idx = 0; idx < TRUNNEL_DYNARRAY_LEN(&obj->fields); ++idx) {
+      trn_extension_field_free(TRUNNEL_DYNARRAY_GET(&obj->fields, idx));
+    }
+  }
+  TRUNNEL_DYNARRAY_WIPE(&obj->fields);
+  TRUNNEL_DYNARRAY_CLEAR(&obj->fields);
+}
+
+void
+trn_extension_free(trn_extension_t *obj)
+{
+  if (obj == NULL)
+    return;
+  trn_extension_clear(obj);
+  trunnel_memwipe(obj, sizeof(trn_extension_t));
+  trunnel_free_(obj);
+}
+
+uint8_t
+trn_extension_get_num(const trn_extension_t *inp)
+{
+  return inp->num;
+}
+int
+trn_extension_set_num(trn_extension_t *inp, uint8_t val)
+{
+  inp->num = val;
+  return 0;
+}
+size_t
+trn_extension_getlen_fields(const trn_extension_t *inp)
+{
+  return TRUNNEL_DYNARRAY_LEN(&inp->fields);
+}
+
+struct trn_extension_field_st *
+trn_extension_get_fields(trn_extension_t *inp, size_t idx)
+{
+  return TRUNNEL_DYNARRAY_GET(&inp->fields, idx);
+}
+
+ const struct trn_extension_field_st *
+trn_extension_getconst_fields(const trn_extension_t *inp, size_t idx)
+{
+  return trn_extension_get_fields((trn_extension_t*)inp, idx);
+}
+int
+trn_extension_set_fields(trn_extension_t *inp, size_t idx, struct trn_extension_field_st * elt)
+{
+  trn_extension_field_t *oldval = TRUNNEL_DYNARRAY_GET(&inp->fields, idx);
+  if (oldval && oldval != elt)
+    trn_extension_field_free(oldval);
+  return trn_extension_set0_fields(inp, idx, elt);
+}
+int
+trn_extension_set0_fields(trn_extension_t *inp, size_t idx, struct trn_extension_field_st * elt)
+{
+  TRUNNEL_DYNARRAY_SET(&inp->fields, idx, elt);
+  return 0;
+}
+int
+trn_extension_add_fields(trn_extension_t *inp, struct trn_extension_field_st * elt)
+{
+#if SIZE_MAX >= UINT8_MAX
+  if (inp->fields.n_ == UINT8_MAX)
+    goto trunnel_alloc_failed;
+#endif
+  TRUNNEL_DYNARRAY_ADD(struct trn_extension_field_st *, &inp->fields, elt, {});
+  return 0;
+ trunnel_alloc_failed:
+  TRUNNEL_SET_ERROR_CODE(inp);
+  return -1;
+}
+
+struct trn_extension_field_st * *
+trn_extension_getarray_fields(trn_extension_t *inp)
+{
+  return inp->fields.elts_;
+}
+const struct trn_extension_field_st *  const  *
+trn_extension_getconstarray_fields(const trn_extension_t *inp)
+{
+  return (const struct trn_extension_field_st *  const  *)trn_extension_getarray_fields((trn_extension_t*)inp);
+}
+int
+trn_extension_setlen_fields(trn_extension_t *inp, size_t newlen)
+{
+  struct trn_extension_field_st * *newptr;
+#if UINT8_MAX < SIZE_MAX
+  if (newlen > UINT8_MAX)
+    goto trunnel_alloc_failed;
+#endif
+  newptr = trunnel_dynarray_setlen(&inp->fields.allocated_,
+                 &inp->fields.n_, inp->fields.elts_, newlen,
+                 sizeof(inp->fields.elts_[0]), (trunnel_free_fn_t) trn_extension_field_free,
+                 &inp->trunnel_error_code_);
+  if (newlen != 0 && newptr == NULL)
+    goto trunnel_alloc_failed;
+  inp->fields.elts_ = newptr;
+  return 0;
+ trunnel_alloc_failed:
+  TRUNNEL_SET_ERROR_CODE(inp);
+  return -1;
+}
+const char *
+trn_extension_check(const trn_extension_t *obj)
+{
+  if (obj == NULL)
+    return "Object was NULL";
+  if (obj->trunnel_error_code_)
+    return "A set function failed on this object";
+  {
+    const char *msg;
+
+    unsigned idx;
+    for (idx = 0; idx < TRUNNEL_DYNARRAY_LEN(&obj->fields); ++idx) {
+      if (NULL != (msg = trn_extension_field_check(TRUNNEL_DYNARRAY_GET(&obj->fields, idx))))
+        return msg;
+    }
+  }
+  if (TRUNNEL_DYNARRAY_LEN(&obj->fields) != obj->num)
+    return "Length mismatch for fields";
+  return NULL;
+}
+
+ssize_t
+trn_extension_encoded_len(const trn_extension_t *obj)
+{
+  ssize_t result = 0;
+
+  if (NULL != trn_extension_check(obj))
+     return -1;
+
+
+  /* Length of u8 num */
+  result += 1;
+
+  /* Length of struct trn_extension_field fields[num] */
+  {
+
+    unsigned idx;
+    for (idx = 0; idx < TRUNNEL_DYNARRAY_LEN(&obj->fields); ++idx) {
+      result += trn_extension_field_encoded_len(TRUNNEL_DYNARRAY_GET(&obj->fields, idx));
+    }
+  }
+  return result;
+}
+int
+trn_extension_clear_errors(trn_extension_t *obj)
+{
+  int r = obj->trunnel_error_code_;
+  obj->trunnel_error_code_ = 0;
+  return r;
+}
+ssize_t
+trn_extension_encode(uint8_t *output, const size_t avail, const trn_extension_t *obj)
+{
+  ssize_t result = 0;
+  size_t written = 0;
+  uint8_t *ptr = output;
+  const char *msg;
+#ifdef TRUNNEL_CHECK_ENCODED_LEN
+  const ssize_t encoded_len = trn_extension_encoded_len(obj);
+#endif
+
+  if (NULL != (msg = trn_extension_check(obj)))
+    goto check_failed;
+
+#ifdef TRUNNEL_CHECK_ENCODED_LEN
+  trunnel_assert(encoded_len >= 0);
+#endif
+
+  /* Encode u8 num */
+  trunnel_assert(written <= avail);
+  if (avail - written < 1)
+    goto truncated;
+  trunnel_set_uint8(ptr, (obj->num));
+  written += 1; ptr += 1;
+
+  /* Encode struct trn_extension_field fields[num] */
+  {
+
+    unsigned idx;
+    for (idx = 0; idx < TRUNNEL_DYNARRAY_LEN(&obj->fields); ++idx) {
+      trunnel_assert(written <= avail);
+      result = trn_extension_field_encode(ptr, avail - written, TRUNNEL_DYNARRAY_GET(&obj->fields, idx));
+      if (result < 0)
+        goto fail; /* XXXXXXX !*/
+      written += result; ptr += result;
+    }
+  }
+
+
+  trunnel_assert(ptr == output + written);
+#ifdef TRUNNEL_CHECK_ENCODED_LEN
+  {
+    trunnel_assert(encoded_len >= 0);
+    trunnel_assert((size_t)encoded_len == written);
+  }
+
+#endif
+
+  return written;
+
+ truncated:
+  result = -2;
+  goto fail;
+ check_failed:
+  (void)msg;
+  result = -1;
+  goto fail;
+ fail:
+  trunnel_assert(result < 0);
+  return result;
+}
+
+/** As trn_extension_parse(), but do not allocate the output object.
+ */
+static ssize_t
+trn_extension_parse_into(trn_extension_t *obj, const uint8_t *input, const size_t len_in)
+{
+  const uint8_t *ptr = input;
+  size_t remaining = len_in;
+  ssize_t result = 0;
+  (void)result;
+
+  /* Parse u8 num */
+  CHECK_REMAINING(1, truncated);
+  obj->num = (trunnel_get_uint8(ptr));
+  remaining -= 1; ptr += 1;
+
+  /* Parse struct trn_extension_field fields[num] */
+  TRUNNEL_DYNARRAY_EXPAND(trn_extension_field_t *, &obj->fields, obj->num, {});
+  {
+    trn_extension_field_t * elt;
+    unsigned idx;
+    for (idx = 0; idx < obj->num; ++idx) {
+      result = trn_extension_field_parse(&elt, ptr, remaining);
+      if (result < 0)
+        goto relay_fail;
+      trunnel_assert((size_t)result <= remaining);
+      remaining -= result; ptr += result;
+      TRUNNEL_DYNARRAY_ADD(trn_extension_field_t *, &obj->fields, elt, {trn_extension_field_free(elt);});
+    }
+  }
+  trunnel_assert(ptr + remaining == input + len_in);
+  return len_in - remaining;
+
+ truncated:
+  return -2;
+ relay_fail:
+  trunnel_assert(result < 0);
+  return result;
+ trunnel_alloc_failed:
+  return -1;
+}
+
+ssize_t
+trn_extension_parse(trn_extension_t **output, const uint8_t *input, const size_t len_in)
+{
+  ssize_t result;
+  *output = trn_extension_new();
+  if (NULL == *output)
+    return -1;
+  result = trn_extension_parse_into(*output, input, len_in);
+  if (result < 0) {
+    trn_extension_free(*output);
+    *output = NULL;
+  }
+  return result;
+}