/* Provenance: curl/curl Curl_open (fixed).
 * repo: curl/curl
 * commit: 3c9e021f86872baae412a427e807fbfa2f3e8a22
 * parent: 687908c6e6332b2bf4ba74b271e795f9c65a5a61
 * commit_url: https://github.com/curl/curl/commit/3c9e021f86872baae412a427e807fbfa2f3e8a22
 * cve: CVE-2020-8231
 * license: curl
 * function: Curl_open
 * relpath: lib/url.c
 * provenance: human
 * mechanism: other
 */

CURLcode Curl_open(struct Curl_easy **curl)
{
  CURLcode result;
  struct Curl_easy *data;

  /* Very simple start-up: alloc the struct, init it with zeroes and return */
  data = calloc(1, sizeof(struct Curl_easy));
  if(!data) {
    /* this is a very serious error */
    DEBUGF(fprintf(stderr, "Error: calloc of Curl_easy failed\n"));
    return CURLE_OUT_OF_MEMORY;
  }

  data->magic = CURLEASY_MAGIC_NUMBER;

  result = Curl_resolver_init(data, &data->state.resolver);
  if(result) {
    DEBUGF(fprintf(stderr, "Error: resolver_init failed\n"));
    free(data);
    return result;
  }

  result = Curl_init_userdefined(data);
  if(!result) {
    Curl_dyn_init(&data->state.headerb, CURL_MAX_HTTP_HEADER);
    Curl_convert_init(data);
    Curl_initinfo(data);

    /* most recent connection is not yet defined */
    data->state.lastconnect_id = -1;

    data->progress.flags |= PGRS_HIDE;
    data->state.current_speed = -1; /* init to negative == impossible */
  }

  if(result) {
    Curl_resolver_cleanup(data->state.resolver);
    Curl_dyn_free(&data->state.headerb);
    Curl_freeset(data);
    free(data);
    data = NULL;
  }
  else
    *curl = data;

  return result;
}