text: /***************************************************************************
   *                                  _   _ ____  _
   *  Project                     ___| | | |  _ \| |
   *                             / __| | | | |_) | |
   *                            | (__| |_| |  _ <| |___
   *                             \___|\___/|_| \_\_____|
   *
   * Copyright (C) 1998 - 2020, Daniel Stenberg, <daniel@haxx.se>, et al.
   *
   * This software is licensed as described in the file COPYING, which
   * you should have received as part of this distribution. The terms
   * are also available at https://curl.haxx.se/docs/copyright.html.
   *
   * You may opt to use, copy, modify, merge, publish, distribute and/or sell
   * copies of the Software, and permit persons to whom the Software is
   * furnished to do so, under the terms of the COPYING file.
   *
   * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
   * KIND, either express or implied.
   *
   ***************************************************************************/
  #include "tool_setup.h"
  
  #ifdef HAVE_FCNTL_H
  #include <fcntl.h>
  #endif
  
  #ifdef HAVE_LOCALE_H
  #include <locale.h>
  #endif
  
  #ifdef HAVE_SYS_SELECT_H
  #include <sys/select.h>
  #elif defined(HAVE_UNISTD_H)
  #include <unistd.h>
  #endif
  
  #ifdef __VMS
  #include <fabdef.h>
  #endif
  
  #ifdef __AMIGA__
  #include <proto/dos.h>
  #endif
  
  #include "strcase.h"
  
  #define ENABLE_CURLX_PRINTF
  /* use our own printf() functions */
  #include "curlx.h"
  
  #include "tool_binmode.h"
  #include "tool_cfgable.h"
  #include "tool_cb_dbg.h"
  #include "tool_cb_hdr.h"
  #include "tool_cb_prg.h"
  #include "tool_cb_rea.h"
  #include "tool_cb_see.h"
  #include "tool_cb_wrt.h"
  #include "tool_dirhie.h"
  #include "tool_doswin.h"
  #include "tool_easysrc.h"
  #include "tool_filetime.h"
  #include "tool_getparam.h"
  #include "tool_helpers.h"
  #include "tool_homedir.h"
  #include "tool_libinfo.h"
  #include "tool_main.h"
  #include "tool_metalink.h"
  #include "tool_msgs.h"
  #include "tool_operate.h"
  #include "tool_operhlp.h"
  #include "tool_paramhlp.h"
  #include "tool_parsecfg.h"
  #include "tool_setopt.h"
  #include "tool_sleep.h"
  #include "tool_urlglob.h"
  #include "tool_util.h"
  #include "tool_writeout.h"
  #include "tool_xattr.h"
  #include "tool_vms.h"
  #include "tool_help.h"
  #include "tool_hugehelp.h"
  #include "tool_progress.h"
  
  #include "memdebug.h" /* keep this as LAST include */
  
  #ifdef CURLDEBUG
  /* libcurl's debug builds provide an extra function */
  CURLcode curl_easy_perform_ev(CURL* easy);
  #endif
  
  #define CURLseparator "--_curl_--"
  
  #ifndef O_BINARY
  /* since O_BINARY as used in bitmasks, setting it to zero makes it usable in
     source code but yet it doesn't ruin anything */
  #define O_BINARY 0
  #endif
  
  #define CURL_CA_CERT_ERRORMSG \
      "More details here: https://curl.haxx.se/docs/sslcerts.html\n\n" \
      "curl failed to verify the legitimacy of the server and therefore " \
      "could not\nestablish a secure connection to it. To learn more about " \
      "this situation and\nhow to fix it, please visit the web page mentioned " \
      "above.\n"
  
  static CURLcode single_transfer(
      struct GlobalConfig* global,
      struct OperationConfig* config,
      CURLSH* share,
      bool capath_from_env,
      bool* added);
  static CURLcode create_transfer(struct GlobalConfig* global, CURLSH* share, bool* added);
  
  static bool is_fatal_error(CURLcode code)
  {
      switch (code) {
          case CURLE_FAILED_INIT:
          case CURLE_OUT_OF_MEMORY:
          case CURLE_UNKNOWN_OPTION:
          case CURLE_FUNCTION_NOT_FOUND:
          case CURLE_BAD_FUNCTION_ARGUMENT:
              /* critical error */
              return TRUE;
          default:
              break;
      }
  
      /* no error or not critical */
      return FALSE;
  }
  
  /*
   * Check if a given string is a PKCS#11 URI
   */
  static bool is_pkcs11_uri(const char* string)
  {
      if (curl_strnequal(string, "pkcs11:", 7)) {
          return TRUE;
      } else {
          return FALSE;
      }
  }
  
  #ifdef __VMS
  /*
   * get_vms_file_size does what it takes to get the real size of the file
   *
   * For fixed files, find out the size of the EOF block and adjust.
   *
   * For all others, have to read the entire file in, discarding the contents.
   * Most posted text files will be small, and binary files like zlib archives
   * and CD/DVD images should be either a STREAM_LF format or a fixed format.
   *
   */
  static curl_off_t vms_realfilesize(const char* name, const struct_stat* stat_buf)
  {
      char buffer[8192];
      curl_off_t count;
      int ret_stat;
      FILE* file;
  
      /* !checksrc! disable FOPENMODE 1 */
      file = fopen(name, "r"); /* VMS */
      if (file == NULL) {
          return 0;
      }
      count = 0;
      ret_stat = 1;
      while (ret_stat > 0) {
          ret_stat = fread(buffer, 1, sizeof(buffer), file);
          if (ret_stat != 0)
              count += ret_stat;
      }
      fclose(file);
  
      return count;
  }
  
  /*
   *
   *  VmsSpecialSize checks to see if the stat st_size can be trusted and
   *  if not to call a routine to get the correct size.
   *
   */
  static curl_off_t VmsSpecialSize(const char* name, const struct_stat* stat_buf)
  {
      switch (stat_buf->st_fab_rfm) {
          case FAB$C_VAR:
          case FAB$C_VFC:
              return vms_realfilesize(name, stat_buf);
              break;
          default:
              return stat_buf->st_size;
      }
  }
  #endif /* __VMS */
  
  #define BUFFER_SIZE (100 * 1024)
  
  struct per_transfer* transfers; /* first node */
  static struct per_transfer* transfersl; /* last node */
  
  /* add_per_transfer creates a new 'per_transfer' node in the linked
     list of transfers */
  static CURLcode add_per_transfer(struct per_transfer** per)
  {
      struct per_transfer* p;
      p = calloc(sizeof(struct per_transfer), 1);
      if (!p)
          return CURLE_OUT_OF_MEMORY;
      if (!transfers)
          /* first entry */
          transfersl = transfers = p;
      else {
          /* make the last node point to the new node */
          transfersl->next = p;
          /* make the new node point back to the formerly last node */
          p->prev = transfersl;
          /* move the last node pointer to the new entry */
          transfersl = p;
      }
      *per = p;
      all_xfers++; /* count total number of transfers added */
      return CURLE_OK;
  }
  
  /* Remove the specified transfer from the list (and free it), return the next
     in line */
  static struct per_transfer* del_per_transfer(struct per_transfer* per)
  {
      struct per_transfer* n;
      struct per_transfer* p;
      DEBUGASSERT(transfers);
      DEBUGASSERT(transfersl);
      DEBUGASSERT(per);
  
      n = per->next;
      p = per->prev;
  
      if (p)
          p->next = n;
      else
          transfers = n;
  
      if (n)
          n->prev = p;
      else
          transfersl = p;
  
      free(per);
  
      return n;
  }
  
  static CURLcode pre_transfer(struct GlobalConfig* global, struct per_transfer* per)
  {
      curl_off_t uploadfilesize = -1;
      struct_stat fileinfo;
      CURLcode result = CURLE_OK;
  
      if (per->separator_err)
          fprintf(global->errors, "%s\n", per->separator_err);
      if (per->separator)
          printf("%s\n", per->separator);
  
      if (per->uploadfile && !stdin_upload(per->uploadfile)) {
          /* VMS Note:
           *
           * Reading binary from files can be a problem...  Only FIXED, VAR
           * etc WITHOUT implied CC will work Others need a \n appended to a
           * line
           *
           * - Stat gives a size but this is UNRELIABLE in VMS As a f.e. a
           * fixed file with implied CC needs to have a byte added for every
           * record processed, this can by derived from Filesize & recordsize
           * for VARiable record files the records need to be counted!  for
           * every record add 1 for linefeed and subtract 2 for the record
           * header for VARIABLE header files only the bare record data needs
           * to be considered with one appended if implied CC
           */
  #ifdef __VMS
          /* Calculate the real upload size for VMS */
          per->infd = -1;
          if (stat(per->uploadfile, &fileinfo) == 0) {
              fileinfo.st_size = VmsSpecialSize(uploadfile, &fileinfo);
              switch (fileinfo.st_fab_rfm) {
                  case FAB$C_VAR:
                  case FAB$C_VFC:
                  case FAB$C_STMCR:
                      per->infd = open(per->uploadfile, O_RDONLY | O_BINARY);
                      break;
                  default:
                      per->infd = open(per->uploadfile, O_RDONLY | O_BINARY, "rfm=stmlf", "ctx=stm");
              }
          }
          if (per->infd == -1)
  #else
          per->infd = open(per->uploadfile, O_RDONLY | O_BINARY);
          if ((per->infd == -1) || fstat(per->infd, &fileinfo))
  #endif
          {
              helpf(global->errors, "Can't open '%s'!\n", per->uploadfile);
              if (per->infd != -1) {
                  close(per->infd);
                  per->infd = STDIN_FILENO;
              }
              return CURLE_READ_ERROR;
          }
          per->infdopen = TRUE;
  
          /* we ignore file size for char/block devices, sockets, etc. */
          if (S_ISREG(fileinfo.st_mode))
              uploadfilesize = fileinfo.st_size;
  
          if (uploadfilesize != -1)
              my_setopt(per->curl, CURLOPT_INFILESIZE_LARGE, uploadfilesize);
          per->input.fd = per->infd;
      }
      return result;
  }
  
  /*
   * Call this after a transfer has completed.
   */
  static CURLcode post_per_transfer(
      struct GlobalConfig* global, struct per_transfer* per, CURLcode result, bool* retryp)
  {
      struct OutStruct* outs = &per->outs;
      CURL* curl = per->curl;
      struct OperationConfig* config = per->config;
  
      if (!curl || !config)
          return result;
  
      *retryp = FALSE;
  
      if (per->infdopen)
          close(per->infd);
  
  #ifdef __VMS
      if (is_vms_shell()) {
          /* VMS DCL shell behavior */
          if (!global->showerror)
              vms_show = VMSSTS_HIDE;
      } else
  #endif
          if (config->synthetic_error) {
          ;
      } else if (result && global->showerror) {
          fprintf(
              global->errors,
              "curl: (%d) %s\n",
              result,
              (per->errorbuffer[0]) ? per->errorbuffer : curl_easy_strerror(result));
          if (result == CURLE_PEER_FAILED_VERIFICATION)
              fputs(CURL_CA_CERT_ERRORMSG, global->errors);
      }
  
      /* Set file extended attributes */
      if (!result && config->xattr && outs->fopened && outs->stream) {
          int rc = fwrite_xattr(curl, fileno(outs->stream));
          if (rc)
              warnf(config->global, "Error setting extended attributes: %s\n", strerror(errno));
      }
  
      if (!result && !outs->stream && !outs->bytes) {
          /* we have received no data despite the transfer was successful
             ==> force cration of an empty output file (if an output file
             was specified) */
          long cond_unmet = 0L;
          /* do not create (or even overwrite) the file in case we get no
             data because of unmet condition */
          curl_easy_getinfo(curl, CURLINFO_CONDITION_UNMET, &cond_unmet);
          if (!cond_unmet && !tool_create_output_file(outs, config))
              result = CURLE_WRITE_ERROR;
      }
  
      if (!outs->s_isreg && outs->stream) {
          /* Dump standard stream buffered data */
          int rc = fflush(outs->stream);
          if (!result && rc) {
              /* something went wrong in the writing process */
              result = CURLE_WRITE_ERROR;
              fprintf(global->errors, "(%d) Failed writing body\n", result);
          }
      }
  
  #ifdef USE_METALINK
      if (per->metalink && !per->metalink_next_res)
          fprintf(
              global->errors,
              "Metalink: fetching (%s) from (%s) OK\n",
              per->mlfile->filename,
              per->this_url);
  
      if (!per->metalink && config->use_metalink && result == CURLE_OK) {
          int rv = parse_metalink(config, outs, per->this_url);
          if (!rv) {
              fprintf(config->global->errors, "Metalink: parsing (%s) OK\n", per->this_url);
          } else if (rv == -1)
              fprintf(config->global->errors, "Metalink: parsing (%s) FAILED\n", per->this_url);
      } else if (per->metalink && result == CURLE_OK && !per->metalink_next_res) {
          int rv;
          (void)fflush(outs->stream);
          rv = metalink_check_hash(global, per->mlfile, outs->filename);
          if (!rv)
              per->metalink_next_res = 1;
      }
  #endif /* USE_METALINK */
  
  #ifdef USE_METALINK
      if (outs->metalink_parser)
          metalink_parser_context_delete(outs->metalink_parser);
  #endif /* USE_METALINK */
  
      if (outs->is_cd_filename && outs->stream && !global->mute && outs->filename)
          printf("curl: Saved to filename '%s'\n", outs->filename);
  
      /* if retry-max-time is non-zero, make sure we haven't exceeded the
         time */
      if (per->retry_numretries && (!config->retry_maxtime || (tvdiff(tvnow(), per->retrystart) <
                                                               config->retry_maxtime * 1000L))) {
          enum {
              RETRY_NO,
              RETRY_TIMEOUT,
              RETRY_CONNREFUSED,
              RETRY_HTTP,
              RETRY_FTP,
              RETRY_LAST /* not used */
          } retry = RETRY_NO;
          long response;
          if ((CURLE_OPERATION_TIMEDOUT == result) || (CURLE_COULDNT_RESOLVE_HOST == result) ||
              (CURLE_COULDNT_RESOLVE_PROXY == result) || (CURLE_FTP_ACCEPT_TIMEOUT == result))
              /* retry timeout always */
              retry = RETRY_TIMEOUT;
          else if (config->retry_connrefused && (CURLE_COULDNT_CONNECT == result)) {
              long oserrno;
              curl_easy_getinfo(curl, CURLINFO_OS_ERRNO, &oserrno);
              if (ECONNREFUSED == oserrno)
                  retry = RETRY_CONNREFUSED;
          } else if (
              (CURLE_OK == result) ||
              (config->failonerror && (CURLE_HTTP_RETURNED_ERROR == result))) {
              /* If it returned OK. _or_ failonerror was enabled and it
                 returned due to such an error, check for HTTP transient
                 errors to retry on. */
              long protocol;
              curl_easy_getinfo(curl, CURLINFO_PROTOCOL, &protocol);
              if ((protocol == CURLPROTO_HTTP) || (protocol == CURLPROTO_HTTPS)) {
                  /* This was HTTP(S) */
                  curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &response);
  
                  switch (response) {
                      case 429: /* Too Many Requests (RFC6585) */
                      case 500: /* Internal Server Error */
                      case 502: /* Bad Gateway */
                      case 503: /* Service Unavailable */
                      case 504: /* Gateway Timeout */
                          retry = RETRY_HTTP;
                          /*
                           * At this point, we have already written data to the output
                           * file (or terminal). If we write to a file, we must rewind
                           * or close/re-open the file so that the next attempt starts
                           * over from the beginning.
                           *
                           * TODO: similar action for the upload case. We might need
                           * to start over reading from a previous point if we have
                           * uploaded something when this was returned.
                           */
                          break;
                  }
              }
          } /* if CURLE_OK */
          else if (result) {
              long protocol;
  
              curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &response);
              curl_easy_getinfo(curl, CURLINFO_PROTOCOL, &protocol);
  
              if ((protocol == CURLPROTO_FTP || protocol == CURLPROTO_FTPS) && response / 100 == 4)
                  /*
                   * This is typically when the FTP server only allows a certain
                   * amount of users and we are not one of them.  All 4xx codes
                   * are transient.
                   */
                  retry = RETRY_FTP;
          }
  
          if (retry) {
              long sleeptime = 0;
              curl_off_t retry_after = 0;
              static const char* const m[] = {
                  NULL, "timeout", "connection refused", "HTTP error", "FTP error"};
  
              sleeptime = per->retry_sleep;
              if (RETRY_HTTP == retry) {
                  curl_easy_getinfo(curl, CURLINFO_RETRY_AFTER, &retry_after);
                  if (retry_after) {
                      /* store in a 'long', make sure it doesn't overflow */
                      if (retry_after > LONG_MAX / 1000)
                          sleeptime = LONG_MAX;
                      else
                          sleeptime = (long)retry_after * 1000; /* milliseconds */
                  }
              }
              warnf(
                  config->global,
                  "Transient problem: %s "
                  "Will retry in %ld seconds. "
                  "%ld retries left.\n",
                  m[retry],
                  sleeptime / 1000L,
                  per->retry_numretries);
  
              per->retry_numretries--;
              tool_go_sleep(sleeptime);
              if (!config->retry_delay) {
                  per->retry_sleep *= 2;
                  if (per->retry_sleep > RETRY_SLEEP_MAX)
                      per->retry_sleep = RETRY_SLEEP_MAX;
              }
              if (outs->bytes && outs->filename && outs->stream) {
                  int rc;
                  /* We have written data to a output file, we truncate file
                   */
                  if (!global->mute)
                      fprintf(
                          global->errors,
                          "Throwing away %" CURL_FORMAT_CURL_OFF_T " bytes\n",
                          outs->bytes);
                  fflush(outs->stream);
                  /* truncate file at the position where we started appending */
  #ifdef HAVE_FTRUNCATE
                  if (ftruncate(fileno(outs->stream), outs->init)) {
                      /* when truncate fails, we can't just append as then we'll
                         create something strange, bail out */
                      if (!global->mute)
                          fprintf(global->errors, "failed to truncate, exiting\n");
                      return CURLE_WRITE_ERROR;
                  }
                  /* now seek to the end of the file, the position where we
                     just truncated the file in a large file-safe way */
                  rc = fseek(outs->stream, 0, SEEK_END);
  #else
                  /* ftruncate is not available, so just reposition the file
                     to the location we would have truncated it. This won't
                     work properly with large files on 32-bit systems, but
                     most of those will have ftruncate. */
                  rc = fseek(outs->stream, (long)outs->init, SEEK_SET);
  #endif
                  if (rc) {
                      if (!global->mute)
                          fprintf(global->errors, "failed seeking to end of file, exiting\n");
                      return CURLE_WRITE_ERROR;
                  }
                  outs->bytes = 0; /* clear for next round */
              }
              *retryp = TRUE; /* curl_easy_perform loop */
              return CURLE_OK;
          }
      } /* if retry_numretries */
      else if (per->metalink) {
          /* Metalink: Decide to try the next resource or not. Try the next resource
             if download was not successful. */
          long response;
          if (CURLE_OK == result) {
              /* TODO We want to try next resource when download was
                 not successful. How to know that? */
              char* effective_url = NULL;
              curl_easy_getinfo(curl, CURLINFO_EFFECTIVE_URL, &effective_url);
              if (effective_url && curl_strnequal(effective_url, "http", 4)) {
                  /* This was HTTP(S) */
                  curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &response);
                  if (response != 200 && response != 206) {
                      per->metalink_next_res = 1;
                      fprintf(
                          global->errors,
                          "Metalink: fetching (%s) from (%s) FAILED "
                          "(HTTP status code %ld)\n",
                          per->mlfile->filename,
                          per->this_url,
                          response);
                  }
              }
          } else {
              per->metalink_next_res = 1;
              fprintf(
                  global->errors,
                  "Metalink: fetching (%s) from (%s) FAILED (%s)\n",
                  per->mlfile->filename,
                  per->this_url,
                  curl_easy_strerror(result));
          }
      }
  
      if ((global->progressmode == CURL_PROGRESS_BAR) && per->progressbar.calls)
          /* if the custom progress bar has been displayed, we output a
             newline here */
          fputs("\n", per->progressbar.out);
  
      if (config->writeout)
          ourWriteOut(per->curl, &per->outs, config->writeout);
  
      /* Close the outs file */
      if (outs->fopened && outs->stream) {
          int rc = fclose(outs->stream);
          if (!result && rc) {
              /* something went wrong in the writing process */
              result = CURLE_WRITE_ERROR;
              fprintf(global->errors, "(%d) Failed writing body\n", result);
          }
      }
  
      /* File time can only be set _after_ the file has been closed */
      if (!result && config->remote_time && outs->s_isreg && outs->filename) {
          /* Ask libcurl if we got a remote file time */
          curl_off_t filetime = -1;
          curl_easy_getinfo(curl, CURLINFO_FILETIME_T, &filetime);
          setfiletime(filetime, outs->filename, config->global->errors);
      }
  
      /* Close function-local opened file descriptors */
      if (per->heads.fopened && per->heads.stream)
          fclose(per->heads.stream);
  
      if (per->heads.alloc_filename)
          Curl_safefree(per->heads.filename);
  
      if (per->etag_save.fopened && per->etag_save.stream)
          fclose(per->etag_save.stream);
  
      if (per->etag_save.alloc_filename)
          Curl_safefree(per->etag_save.filename);
  
      curl_easy_cleanup(per->curl);
      if (outs->alloc_filename)
          free(outs->filename);
      free(per->this_url);
      free(per->separator_err);
      free(per->separator);
      free(per->outfile);
      free(per->uploadfile);
  
      return CURLE_OK;
  }
  
  static void single_transfer_cleanup(struct OperationConfig* config)
  {
      if (config) {
          struct State* state = &config->state;
          if (state->urls) {
              /* Free list of remaining URLs */
              glob_cleanup(state->urls);
              state->urls = NULL;
          }
          Curl_safefree(state->outfiles);
          Curl_safefree(state->httpgetfields);
          Curl_safefree(state->uploadfile);
          if (state->inglob) {
              /* Free list of globbed upload files */
              glob_cleanup(state->inglob);
              state->inglob = NULL;
          }
      }
  }
  
  /* create the next (singular) transfer */
  
  static CURLcode single_transfer(
      struct GlobalConfig* global,
      struct OperationConfig* config,
      CURLSH* share,
      bool capath_from_env,
      bool* added)
  {
      CURLcode result = CURLE_OK;
      struct getout* urlnode;
      metalinkfile* mlfile_last = NULL;
      bool orig_noprogress = global->noprogress;
      bool orig_isatty = global->isatty;
      struct State* state = &config->state;
      char* httpgetfields = state->httpgetfields;
      *added = FALSE; /* not yet */
  
      if (config->postfields) {
          if (config->use_httpget) {
              if (!httpgetfields) {
                  /* Use the postfields data for a http get */
                  httpgetfields = state->httpgetfields = strdup(config->postfields);
                  Curl_safefree(config->postfields);
                  if (!httpgetfields) {
                      errorf(global, "out of memory\n");
                      result = CURLE_OUT_OF_MEMORY;
                  } else if (SetHTTPrequest(
                                 config,
                                 (config->no_body ? HTTPREQ_HEAD : HTTPREQ_GET),
                                 &config->httpreq)) {
                      result = CURLE_FAILED_INIT;
                  }
              }
          } else {
              if (SetHTTPrequest(config, HTTPREQ_SIMPLEPOST, &config->httpreq))
                  result = CURLE_FAILED_INIT;
          }
          if (result) {
              single_transfer_cleanup(config);
              return result;
          }
      }
      if (!state->urlnode) {
          /* first time caller, setup things */
          state->urlnode = config->url_list;
          state->infilenum = 1;
      }
  
      while (config->state.urlnode) {
          char* infiles; /* might be a glob pattern */
          URLGlob* inglob = state->inglob;
          bool metalink = FALSE; /* metalink download? */
          metalinkfile* mlfile;
          metalink_resource* mlres;
  
          urlnode = config->state.urlnode;
          if (urlnode->flags & GETOUT_METALINK) {
              metalink = 1;
              if (mlfile_last == NULL) {
                  mlfile_last = config->metalinkfile_list;
              }
              mlfile = mlfile_last;
              mlfile_last = mlfile_last->next;
              mlres = mlfile->resource;
          } else {
              mlfile = NULL;
              mlres = NULL;
          }
  
          /* urlnode->url is the full URL (it might be NULL) */
  
          if (!urlnode->url) {
              /* This node has no URL. Free node data without destroying the
                 node itself nor modifying next pointer and continue to next */
              Curl_safefree(urlnode->outfile);
              Curl_safefree(urlnode->infile);
              urlnode->flags = 0;
              config->state.urlnode = urlnode->next;
              state->up = 0;
              continue; /* next URL please */
          }
  
          /* save outfile pattern before expansion */
          if (urlnode->outfile && !state->outfiles) {
              state->outfiles = strdup(urlnode->outfile);
              if (!state->outfiles) {
                  errorf(global, "out of memory\n");
                  result = CURLE_OUT_OF_MEMORY;
                  break;
              }
          }
  
          infiles = urlnode->infile;
  
          if (!config->globoff && infiles && !inglob) {
              /* Unless explicitly shut off */
              result = glob_url(
                  &inglob, infiles, &state->infilenum, global->showerror ? global->errors : NULL);
              if (result)
                  break;
              config->state.inglob = inglob;
          }
  
          {
              int separator;
              unsigned long urlnum;
  
              if (!state->up && !infiles)
                  Curl_nop_stmt;
              else {
                  if (!state->uploadfile) {
                      if (inglob) {
                          result = glob_next_url(&state->uploadfile, inglob);
                          if (result == CURLE_OUT_OF_MEMORY)
                              errorf(global, "out of memory\n");
                      } else if (!state->up) {
                          state->uploadfile = strdup(infiles);
                          if (!state->uploadfile) {
                              errorf(global, "out of memory\n");
                              result = CURLE_OUT_OF_MEMORY;
                          }
                      }
                  }
                  if (result)
                      break;
              }
  
              if (!state->urlnum) {
                  if (metalink) {
                      /* For Metalink download, we don't use glob. Instead we use
                         the number of resources as urlnum. */
                      urlnum = count_next_metalink_resource(mlfile);
                  } else if (!config->globoff) {
                      /* Unless explicitly shut off, we expand '{...}' and '[...]'
                         expressions and return total number of URLs in pattern set */
                      result = glob_url(
                          &state->urls,
                          urlnode->url,
                          &state->urlnum,
                          global->showerror ? global->errors : NULL);
                      if (result)
                          break;
                      urlnum = state->urlnum;
                  } else
                      urlnum = 1; /* without globbing, this is a single URL */
              } else
                  urlnum = state->urlnum;
  
              /* if multiple files extracted to stdout, insert separators! */
              separator = ((!state->outfiles || !strcmp(state->outfiles, "-")) && urlnum > 1);
  
              if (state->up < state->infilenum) {
                  struct per_transfer* per;
                  struct OutStruct* outs;
                  struct InStruct* input;
                  struct OutStruct* heads;
                  struct OutStruct* etag_save;
                  struct HdrCbData* hdrcbdata = NULL;
                  CURL* curl = curl_easy_init();
                  result = add_per_transfer(&per);
                  if (result || !curl) {
                      curl_easy_cleanup(curl);
                      result = CURLE_OUT_OF_MEMORY;
                      break;
                  }
                  if (state->uploadfile) {
                      per->uploadfile = strdup(state->uploadfile);
                      if (!per->uploadfile) {
                          curl_easy_cleanup(curl);
                          result = CURLE_OUT_OF_MEMORY;
                          break;
                      }
                  }
                  *added = TRUE;
                  per->config = config;
                  per->curl = curl;
  
                  /* default headers output stream is stdout */
                  heads = &per->heads;
                  heads->stream = stdout;
  
                  /* Single header file for all URLs */
                  if (config->headerfile) {
                      /* open file for output: */
                      if (strcmp(config->headerfile, "-")) {
                          FILE* newfile;
                          newfile = fopen(config->headerfile, per->prev == NULL ? "wb" : "ab");
                          if (!newfile) {
                              warnf(config->global, "Failed to open %s\n", config->headerfile);
                              result = CURLE_WRITE_ERROR;
                              break;
                          } else {
                              heads->filename = config->headerfile;
                              heads->s_isreg = TRUE;
                              heads->fopened = TRUE;
                              heads->stream = newfile;
                          }
                      } else {
                          /* always use binary mode for protocol header output */
                          set_binmode(heads->stream);
                      }
                  }
  
                  hdrcbdata = &per->hdrcbdata;
  
                  outs = &per->outs;
                  input = &per->input;
  
                  per->outfile = NULL;
                  per->infdopen = FALSE;
                  per->infd = STDIN_FILENO;
  
                  /* default output stream is stdout */
                  outs->stream = stdout;
  
                  /* --etag-compare */
                  if (config->etag_compare_file) {
                      char* etag_from_file = NULL;
                      char* header = NULL;
  
                      /* open file for reading: */
                      FILE* file = fopen(config->etag_compare_file, FOPEN_READTEXT);
                      if (!file && !config->etag_save_file) {
                          errorf(config->global, "Failed to open %s\n", config->etag_compare_file);
                          result = CURLE_READ_ERROR;
                          break;
                      }
  
                      if ((PARAM_OK == file2string(&etag_from_file, file)) && etag_from_file) {
                          header = aprintf("If-None-Match: \"%s\"", etag_from_file);
                          Curl_safefree(etag_from_file);
                      } else
                          header = aprintf("If-None-Match: \"\"");
  
                      if (!header) {
                          if (file)
                              fclose(file);
                          errorf(
                              config->global, "Failed to allocate memory for custom etag header\n");
                          result = CURLE_OUT_OF_MEMORY;
                          break;
                      }
  
                      /* add Etag from file to list of custom headers */
                      add2list(&config->headers, header);
  
                      Curl_safefree(header);
  
                      if (file) {
                          fclose(file);
                      }
                  }
  
                  /* --etag-save */
                  etag_save = &per->etag_save;
                  etag_save->stream = stdout;
  
                  if (config->etag_save_file) {
                      /* open file for output: */
                      if (strcmp(config->etag_save_file, "-")) {
                          FILE* newfile = fopen(config->etag_save_file, "wb");
                          if (!newfile) {
                              warnf(config->global, "Failed to open %s\n", config->etag_save_file);
  
                              result = CURLE_WRITE_ERROR;
                              break;
                          } else {
                              etag_save->filename = config->etag_save_file;
                              etag_save->s_isreg = TRUE;
                              etag_save->fopened = TRUE;
                              etag_save->stream = newfile;
                          }
                      } else {
                          /* always use binary mode for protocol header output */
                          set_binmode(etag_save->stream);
                      }
                  }
  
                  if (metalink) {
                      /* For Metalink download, use name in Metalink file as
                         filename. */
                      per->outfile = strdup(mlfile->filename);
                      if (!per->outfile) {
                          result = CURLE_OUT_OF_MEMORY;
                          break;
                      }
                      per->this_url = strdup(mlres->url);
                      if (!per->this_url) {
                          result = CURLE_OUT_OF_MEMORY;
                          break;
                      }
                      per->mlfile = mlfile;
                  } else {
                      if (state->urls) {
                          result = glob_next_url(&per->this_url, state->urls);
                          if (result)
                              break;
                      } else if (!state->li) {
                          per->this_url = strdup(urlnode->url);
                          if (!per->this_url) {
                              result = CURLE_OUT_OF_MEMORY;
                              break;
                          }
                      } else
                          per->this_url = NULL;
                      if (!per->this_url)
                          break;
  
                      if (state->outfiles) {
                          per->outfile = strdup(state->outfiles);
                          if (!per->outfile) {
                              result = CURLE_OUT_OF_MEMORY;
                              break;
                          }
                      }
                  }
  
                  if (((urlnode->flags & GETOUT_USEREMOTE) ||
                       (per->outfile && strcmp("-", per->outfile))) &&
                      (metalink || !config->use_metalink)) {
                      /*
                       * We have specified a file name to store the result in, or we have
                       * decided we want to use the remote file name.
                       */
  
                      if (!per->outfile) {
                          /* extract the file name from the URL */
                          result = get_url_file_name(&per->outfile, per->this_url);
                          if (result)
                              break;
                          if (!*per->outfile && !config->content_disposition) {
                              errorf(global, "Remote file name has no length!\n");
                              result = CURLE_WRITE_ERROR;
                              break;
                          }
                      } else if (state->urls) {
                          /* fill '#1' ... '#9' terms from URL pattern */
                          char* storefile = per->outfile;
                          result = glob_match_url(&per->outfile, storefile, state->urls);
                          Curl_safefree(storefile);
                          if (result) {
                              /* bad globbing */
                              warnf(config->global, "bad output glob!\n");
                              break;
                          }
                      }
  
                      /* Create the directory hierarchy, if not pre-existent to a multiple
                         file output call */
  
                      if (config->create_dirs || metalink) {
                          result = create_dir_hierarchy(per->outfile, global->errors);
                          /* create_dir_hierarchy shows error upon CURLE_WRITE_ERROR */
                          if (result)
                              break;
                      }
  
                      if ((urlnode->flags & GETOUT_USEREMOTE) && config->content_disposition) {
                          /* Our header callback MIGHT set the filename */
                          DEBUGASSERT(!outs->filename);
                      }
  
                      if (config->resume_from_current) {
                          /* We're told to continue from where we are now. Get the size
                             of the file as it is now and open it for append instead */
                          struct_stat fileinfo;
                          /* VMS -- Danger, the filesize is only valid for stream files */
                          if (0 == stat(per->outfile, &fileinfo))
                              /* set offset to current file size: */
                              config->resume_from = fileinfo.st_size;
                          else
                              /* let offset be 0 */
                              config->resume_from = 0;
                      }
  
                      if (config->resume_from) {
  #ifdef __VMS
                          /* open file for output, forcing VMS output format into stream
                             mode which is needed for stat() call above to always work. */
                          FILE* file =
                              fopen(outfile, "ab", "ctx=stm", "rfm=stmlf", "rat=cr", "mrs=0");
  #else
                          /* open file for output: */
                          FILE* file = fopen(per->outfile, "ab");
  #endif
                          if (!file) {
                              errorf(global, "Can't open '%s'!\n", per->outfile);
                              result = CURLE_WRITE_ERROR;
                              break;
                          }
                          outs->fopened = TRUE;
                          outs->stream = file;
                          outs->init = config->resume_from;
                      } else {
                          outs->stream = NULL; /* open when needed */
                      }
                      outs->filename = per->outfile;
                      outs->s_isreg = TRUE;
                  }
  
                  if (per->uploadfile && !stdin_upload(per->uploadfile)) {
                      /*
                       * We have specified a file to upload and it isn't "-".
                       */
                      char* nurl = add_file_name_to_url(per->this_url, per->uploadfile);
                      if (!nurl) {
                          result = CURLE_OUT_OF_MEMORY;
                          break;
                      }
                      per->this_url = nurl;
                  } else if (per->uploadfile && stdin_upload(per->uploadfile)) {
                      /* count to see if there are more than one auth bit set
                         in the authtype field */
                      int authbits = 0;
                      int bitcheck = 0;
                      while (bitcheck < 32) {
                          if (config->authtype & (1UL << bitcheck++)) {
                              authbits++;
                              if (authbits > 1) {
                                  /* more than one, we're done! */
                                  break;
                              }
                          }
                      }
  
                      /*
                       * If the user has also selected --anyauth or --proxy-anyauth
                       * we should warn him/her.
                       */
                      if (config->proxyanyauth || (authbits > 1)) {
                          warnf(
                              config->global,
                              "Using --anyauth or --proxy-anyauth with upload from stdin"
                              " involves a big risk of it not working. Use a temporary"
                              " file or a fixed auth type instead!\n");
                      }
  
                      DEBUGASSERT(per->infdopen == FALSE);
                      DEBUGASSERT(per->infd == STDIN_FILENO);
  
                      set_binmode(stdin);
                      if (!strcmp(per->uploadfile, ".")) {
                          if (curlx_nonblock((curl_socket_t)per->infd, TRUE) < 0)
                              warnf(
                                  config->global,
                                  "fcntl failed on fd=%d: %s\n",
                                  per->infd,
                                  strerror(errno));
                      }
                  }
  
                  if (per->uploadfile && config->resume_from_current)
                      config->resume_from = -1; /* -1 will then force get-it-yourself */
  
                  if (output_expected(per->this_url, per->uploadfile) && outs->stream &&
                      isatty(fileno(outs->stream)))
                      /* we send the output to a tty, therefore we switch off the progress
                         meter */
                      per->noprogress = global->noprogress = global->isatty = TRUE;
                  else {
                      /* progress meter is per download, so restore config
                         values */
                      per->noprogress = global->noprogress = orig_noprogress;
                      global->isatty = orig_isatty;
                  }
  
                  if (urlnum > 1 && !global->mute) {
                      per->separator_err = aprintf(
                          "\n[%lu/%lu]: %s --> %s",
                          state->li + 1,
                          urlnum,
                          per->this_url,
                          per->outfile ? per->outfile : "<stdout>");
                      if (separator)
                          per->separator = aprintf("%s%s", CURLseparator, per->this_url);
                  }
                  if (httpgetfields) {
                      char* urlbuffer;
                      /* Find out whether the url contains a file name */
                      const char* pc = strstr(per->this_url, "://");
                      char sep = '?';
                      if (pc)
                          pc += 3;
                      else
                          pc = per->this_url;
  
                      pc = strrchr(pc, '/'); /* check for a slash */
  
                      if (pc) {
                          /* there is a slash present in the URL */
  
                          if (strchr(pc, '?'))
                              /* Ouch, there's already a question mark in the URL string, we
                                 then append the data with an ampersand separator instead! */
                              sep = '&';
                      }
                      /*
                       * Then append ? followed by the get fields to the url.
                       */
                      if (pc)
                          urlbuffer = aprintf("%s%c%s", per->this_url, sep, httpgetfields);
                      else
                          /* Append  / before the ? to create a well-formed url
                             if the url contains a hostname only
                          */
                          urlbuffer = aprintf("%s/?%s", per->this_url, httpgetfields);
  
                      if (!urlbuffer) {
                          result = CURLE_OUT_OF_MEMORY;
                          break;
                      }
  
                      Curl_safefree(per->this_url); /* free previous URL */
                      per->this_url = urlbuffer; /* use our new URL instead! */
                  }
  
                  if (!global->errors)
                      global->errors = stderr;
  
                  if ((!per->outfile || !strcmp(per->outfile, "-")) && !config->use_ascii) {
                      /* We get the output to stdout and we have not got the ASCII/text
                         flag, then set stdout to be binary */
                      set_binmode(stdout);
                  }
  
                  /* explicitly passed to stdout means okaying binary gunk */
                  config->terminal_binary_ok = (per->outfile && !strcmp(per->outfile, "-"));
  
                  /* Avoid having this setopt added to the --libcurl source output. */
                  result = curl_easy_setopt(curl, CURLOPT_SHARE, share);
                  if (result)
                      break;
  
                  if (!config->tcp_nodelay)
                      my_setopt(curl, CURLOPT_TCP_NODELAY, 0L);
  
                  if (config->tcp_fastopen)
                      my_setopt(curl, CURLOPT_TCP_FASTOPEN, 1L);
  
                  /* where to store */
                  my_setopt(curl, CURLOPT_WRITEDATA, per);
                  my_setopt(curl, CURLOPT_INTERLEAVEDATA, per);
  
                  if (metalink || !config->use_metalink)
                      /* what call to write */
                      my_setopt(curl, CURLOPT_WRITEFUNCTION, tool_write_cb);
  #ifdef USE_METALINK
                  else
                      /* Set Metalink specific write callback function to parse
                         XML data progressively. */
                      my_setopt(curl, CURLOPT_WRITEFUNCTION, metalink_write_cb);
  #endif /* USE_METALINK */
  
                  /* for uploads */
                  input->config = config;
                  /* Note that if CURLOPT_READFUNCTION is fread (the default), then
                   * lib/telnet.c will Curl_poll() on the input file descriptor
                   * rather then calling the READFUNCTION at regular intervals.
                   * The circumstances in which it is preferable to enable this
                   * behaviour, by omitting to set the READFUNCTION & READDATA options,
                   * have not been determined.
                   */
                  my_setopt(curl, CURLOPT_READDATA, input);
                  /* what call to read */
                  my_setopt(curl, CURLOPT_READFUNCTION, tool_read_cb);
  
                  /* in 7.18.0, the CURLOPT_SEEKFUNCTION/DATA pair is taking over what
                     CURLOPT_IOCTLFUNCTION/DATA pair previously provided for seeking */
                  my_setopt(curl, CURLOPT_SEEKDATA, input);
                  my_setopt(curl, CURLOPT_SEEKFUNCTION, tool_seek_cb);
  
                  if (config->recvpersecond && (config->recvpersecond < BUFFER_SIZE))
                      /* use a smaller sized buffer for better sleeps */
                      my_setopt(curl, CURLOPT_BUFFERSIZE, (long)config->recvpersecond);
                  else
                      my_setopt(curl, CURLOPT_BUFFERSIZE, (long)BUFFER_SIZE);
  
                  my_setopt_str(curl, CURLOPT_URL, per->this_url);
                  my_setopt(curl, CURLOPT_NOPROGRESS, global->noprogress ? 1L : 0L);
                  if (config->no_body)
                      my_setopt(curl, CURLOPT_NOBODY, 1L);
  
                  if (config->oauth_bearer)
                      my_setopt_str(curl, CURLOPT_XOAUTH2_BEARER, config->oauth_bearer);
  
                  {
                      my_setopt_str(curl, CURLOPT_PROXY, config->proxy);
                      /* new in libcurl 7.5 */
                      if (config->proxy)
                          my_setopt_enum(curl, CURLOPT_PROXYTYPE, config->proxyver);
  
                      my_setopt_str(curl, CURLOPT_PROXYUSERPWD, config->proxyuserpwd);
  
                      /* new in libcurl 7.3 */
                      my_setopt(curl, CURLOPT_HTTPPROXYTUNNEL, config->proxytunnel ? 1L : 0L);
  
                      /* new in libcurl 7.52.0 */
                      if (config->preproxy)
                          my_setopt_str(curl, CURLOPT_PRE_PROXY, config->preproxy);
  
                      /* new in libcurl 7.10.6 */
                      if (config->proxyanyauth)
                          my_setopt_bitmask(curl, CURLOPT_PROXYAUTH, (long)CURLAUTH_ANY);
                      else if (config->proxynegotiate)
                          my_setopt_bitmask(curl, CURLOPT_PROXYAUTH, (long)CURLAUTH_GSSNEGOTIATE);
                      else if (config->proxyntlm)
                          my_setopt_bitmask(curl, CURLOPT_PROXYAUTH, (long)CURLAUTH_NTLM);
                      else if (config->proxydigest)
                          my_setopt_bitmask(curl, CURLOPT_PROXYAUTH, (long)CURLAUTH_DIGEST);
                      else if (config->proxybasic)
                          my_setopt_bitmask(curl, CURLOPT_PROXYAUTH, (long)CURLAUTH_BASIC);
  
                      /* new in libcurl 7.19.4 */
                      my_setopt_str(curl, CURLOPT_NOPROXY, config->noproxy);
  
                      my_setopt(
                          curl,
                          CURLOPT_SUPPRESS_CONNECT_HEADERS,
                          config->suppress_connect_headers ? 1L : 0L);
                  }
  
                  my_setopt(curl, CURLOPT_FAILONERROR, config->failonerror ? 1L : 0L);
                  my_setopt(curl, CURLOPT_REQUEST_TARGET, config->request_target);
                  my_setopt(curl, CURLOPT_UPLOAD, per->uploadfile ? 1L : 0L);
                  my_setopt(curl, CURLOPT_DIRLISTONLY, config->dirlistonly ? 1L : 0L);
                  my_setopt(curl, CURLOPT_APPEND, config->ftp_append ? 1L : 0L);
  
                  if (config->netrc_opt)
                      my_setopt_enum(curl, CURLOPT_NETRC, (long)CURL_NETRC_OPTIONAL);
                  else if (config->netrc || config->netrc_file)
                      my_setopt_enum(curl, CURLOPT_NETRC, (long)CURL_NETRC_REQUIRED);
                  else
                      my_setopt_enum(curl, CURLOPT_NETRC, (long)CURL_NETRC_IGNORED);
  
                  if (config->netrc_file)
                      my_setopt_str(curl, CURLOPT_NETRC_FILE, config->netrc_file);
  
                  my_setopt(curl, CURLOPT_TRANSFERTEXT, config->use_ascii ? 1L : 0L);
                  if (config->login_options)
                      my_setopt_str(curl, CURLOPT_LOGIN_OPTIONS, config->login_options);
                  my_setopt_str(curl, CURLOPT_USERPWD, config->userpwd);
                  my_setopt_str(curl, CURLOPT_RANGE, config->range);
                  my_setopt(curl, CURLOPT_ERRORBUFFER, per->errorbuffer);
                  my_setopt(curl, CURLOPT_TIMEOUT_MS, (long)(config->timeout * 1000));
  
                  switch (config->httpreq) {
                      case HTTPREQ_SIMPLEPOST:
                          my_setopt_str(curl, CURLOPT_POSTFIELDS, config->postfields);
                          my_setopt(curl, CURLOPT_POSTFIELDSIZE_LARGE, config->postfieldsize);
                          break;
                      case HTTPREQ_MIMEPOST:
                          /* free previous remainders */
                          curl_mime_free(config->mimepost);
                          config->mimepost = NULL;
                          result = tool2curlmime(curl, config->mimeroot, &config->mimepost);
                          if (result)
                              break;
                          my_setopt_mimepost(curl, CURLOPT_MIMEPOST, config->mimepost);
                          break;
                      default:
                          break;
                  }
                  if (result)
                      break;
  
                  /* new in libcurl 7.10.6 (default is Basic) */
                  if (config->authtype)
                      my_setopt_bitmask(curl, CURLOPT_HTTPAUTH, (long)config->authtype);
  
                  my_setopt_slist(curl, CURLOPT_HTTPHEADER, config->headers);
  
                  if (built_in_protos & (CURLPROTO_HTTP | CURLPROTO_RTSP)) {
                      my_setopt_str(curl, CURLOPT_REFERER, config->referer);
                      my_setopt_str(curl, CURLOPT_USERAGENT, config->useragent);
                  }
  
                  if (built_in_protos & CURLPROTO_HTTP) {
                      long postRedir = 0;
  
                      my_setopt(curl, CURLOPT_FOLLOWLOCATION, config->followlocation ? 1L : 0L);
                      my_setopt(curl, CURLOPT_UNRESTRICTED_AUTH, config->unrestricted_auth ? 1L : 0L);
  
                      my_setopt(curl, CURLOPT_AUTOREFERER, config->autoreferer ? 1L : 0L);
  
                      /* new in libcurl 7.36.0 */
                      if (config->proxyheaders) {
                          my_setopt_slist(curl, CURLOPT_PROXYHEADER, config->proxyheaders);
                          my_setopt(curl, CURLOPT_HEADEROPT, CURLHEADER_SEPARATE);
                      }
  
                      /* new in libcurl 7.5 */
                      my_setopt(curl, CURLOPT_MAXREDIRS, config->maxredirs);
  
                      if (config->httpversion)
                          my_setopt_enum(curl, CURLOPT_HTTP_VERSION, config->httpversion);
                      else if (curlinfo->features & CURL_VERSION_HTTP2) {
                          my_setopt_enum(curl, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_2TLS);
                      }
  
                      /* curl 7.19.1 (the 301 version existed in 7.18.2),
                         303 was added in 7.26.0 */
                      if (config->post301)
                          postRedir |= CURL_REDIR_POST_301;
                      if (config->post302)
                          postRedir |= CURL_REDIR_POST_302;
                      if (config->post303)
                          postRedir |= CURL_REDIR_POST_303;
                      my_setopt(curl, CURLOPT_POSTREDIR, postRedir);
  
                      /* new in libcurl 7.21.6 */
                      if (config->encoding)
                          my_setopt_str(curl, CURLOPT_ACCEPT_ENCODING, "");
  
                      /* new in libcurl 7.21.6 */
                      if (config->tr_encoding)
                          my_setopt(curl, CURLOPT_TRANSFER_ENCODING, 1L);
                      /* new in libcurl 7.64.0 */
                      my_setopt(curl, CURLOPT_HTTP09_ALLOWED, config->http09_allowed ? 1L : 0L);
  
                  } /* (built_in_protos & CURLPROTO_HTTP) */
  
                  my_setopt_str(curl, CURLOPT_FTPPORT, config->ftpport);
                  my_setopt(curl, CURLOPT_LOW_SPEED_LIMIT, config->low_speed_limit);
                  my_setopt(curl, CURLOPT_LOW_SPEED_TIME, config->low_speed_time);
                  my_setopt(curl, CURLOPT_MAX_SEND_SPEED_LARGE, config->sendpersecond);
                  my_setopt(curl, CURLOPT_MAX_RECV_SPEED_LARGE, config->recvpersecond);
  
                  if (config->use_resume)
                      my_setopt(curl, CURLOPT_RESUME_FROM_LARGE, config->resume_from);
                  else
                      my_setopt(curl, CURLOPT_RESUME_FROM_LARGE, CURL_OFF_T_C(0));
  
                  my_setopt_str(curl, CURLOPT_KEYPASSWD, config->key_passwd);
                  my_setopt_str(curl, CURLOPT_PROXY_KEYPASSWD, config->proxy_key_passwd);
  
                  if (built_in_protos & (CURLPROTO_SCP | CURLPROTO_SFTP)) {
                      /* SSH and SSL private key uses same command-line option */
                      /* new in libcurl 7.16.1 */
                      my_setopt_str(curl, CURLOPT_SSH_PRIVATE_KEYFILE, config->key);
                      /* new in libcurl 7.16.1 */
                      my_setopt_str(curl, CURLOPT_SSH_PUBLIC_KEYFILE, config->pubkey);
  
                      /* new in libcurl 7.17.1: SSH host key md5 checking allows us
                         to fail if we are not talking to who we think we should */
                      my_setopt_str(curl, CURLOPT_SSH_HOST_PUBLIC_KEY_MD5, config->hostpubmd5);
  
                      /* new in libcurl 7.56.0 */
                      if (config->ssh_compression)
                          my_setopt(curl, CURLOPT_SSH_COMPRESSION, 1L);
                  }
  
                  if (config->cacert)
                      my_setopt_str(curl, CURLOPT_CAINFO, config->cacert);
                  if (config->proxy_cacert)
                      my_setopt_str(curl, CURLOPT_PROXY_CAINFO, config->proxy_cacert);
  
                  if (config->capath) {
                      result = res_setopt_str(curl, CURLOPT_CAPATH, config->capath);
                      if (result == CURLE_NOT_BUILT_IN) {
                          warnf(
                              config->global,
                              "ignoring %s, not supported by libcurl\n",
                              capath_from_env ? "SSL_CERT_DIR environment variable" : "--capath");
                      } else if (result)
                          break;
                  }
                  /* For the time being if --proxy-capath is not set then we use the
                     --capath value for it, if any. See #1257 */
                  if ((config->proxy_capath || config->capath) &&
                      !tool_setopt_skip(CURLOPT_PROXY_CAPATH)) {
                      result = res_setopt_str(
                          curl,
                          CURLOPT_PROXY_CAPATH,
                          (config->proxy_capath ? config->proxy_capath : config->capath));
                      if (result == CURLE_NOT_BUILT_IN) {
                          if (config->proxy_capath) {
                              warnf(
                                  config->global,
                                  "ignoring --proxy-capath, not supported by libcurl\n");
                          }
                      } else if (result)
                          break;
                  }
  
                  if (config->crlfile)
                      my_setopt_str(curl, CURLOPT_CRLFILE, config->crlfile);
                  if (config->proxy_crlfile)
                      my_setopt_str(curl, CURLOPT_PROXY_CRLFILE, config->proxy_crlfile);
                  else if (config->crlfile) /* CURLOPT_PROXY_CRLFILE default is crlfile */
                      my_setopt_str(curl, CURLOPT_PROXY_CRLFILE, config->crlfile);
  
                  if (config->pinnedpubkey)
                      my_setopt_str(curl, CURLOPT_PINNEDPUBLICKEY, config->pinnedpubkey);
  
                  if (curlinfo->features & CURL_VERSION_SSL) {
                      /* Check if config->cert is a PKCS#11 URI and set the
                       * config->cert_type if necessary */
                      if (config->cert) {
                          if (!config->cert_type) {
                              if (is_pkcs11_uri(config->cert)) {
                                  config->cert_type = strdup("ENG");
                              }
                          }
                      }
  
                      /* Check if config->key is a PKCS#11 URI and set the
                       * config->key_type if necessary */
                      if (config->key) {
                          if (!config->key_type) {
                              if (is_pkcs11_uri(config->key)) {
                                  config->key_type = strdup("ENG");
                              }
                          }
                      }
  
                      /* Check if config->proxy_cert is a PKCS#11 URI and set the
                       * config->proxy_type if necessary */
                      if (config->proxy_cert) {
                          if (!config->proxy_cert_type) {
                              if (is_pkcs11_uri(config->proxy_cert)) {
                                  config->proxy_cert_type = strdup("ENG");
                              }
                          }
                      }
  
                      /* Check if config->proxy_key is a PKCS#11 URI and set the
                       * config->proxy_key_type if necessary */
                      if (config->proxy_key) {
                          if (!config->proxy_key_type) {
                              if (is_pkcs11_uri(config->proxy_key)) {
                                  config->proxy_key_type = strdup("ENG");
                              }
                          }
                      }
  
                      my_setopt_str(curl, CURLOPT_SSLCERT, config->cert);
                      my_setopt_str(curl, CURLOPT_PROXY_SSLCERT, config->proxy_cert);
                      my_setopt_str(curl, CURLOPT_SSLCERTTYPE, config->cert_type);
                      my_setopt_str(curl, CURLOPT_PROXY_SSLCERTTYPE, config->proxy_cert_type);
                      my_setopt_str(curl, CURLOPT_SSLKEY, config->key);
                      my_setopt_str(curl, CURLOPT_PROXY_SSLKEY, config->proxy_key);
                      my_setopt_str(curl, CURLOPT_SSLKEYTYPE, config->key_type);
                      my_setopt_str(curl, CURLOPT_PROXY_SSLKEYTYPE, config->proxy_key_type);
  
                      if (config->insecure_ok) {
                          my_setopt(curl, CURLOPT_SSL_VERIFYPEER, 0L);
                          my_setopt(curl, CURLOPT_SSL_VERIFYHOST, 0L);
                      } else {
                          my_setopt(curl, CURLOPT_SSL_VERIFYPEER, 1L);
                          /* libcurl default is strict verifyhost -> 2L   */
                          /* my_setopt(curl, CURLOPT_SSL_VERIFYHOST, 2L); */
                      }
                      if (config->proxy_insecure_ok) {
                          my_setopt(curl, CURLOPT_PROXY_SSL_VERIFYPEER, 0L);
                          my_setopt(curl, CURLOPT_PROXY_SSL_VERIFYHOST, 0L);
                      } else {
                          my_setopt(curl, CURLOPT_PROXY_SSL_VERIFYPEER, 1L);
                      }
  
                      if (config->verifystatus)
                          my_setopt(curl, CURLOPT_SSL_VERIFYSTATUS, 1L);
  
                      if (config->falsestart)
                          my_setopt(curl, CURLOPT_SSL_FALSESTART, 1L);
  
                      my_setopt_enum(
                          curl, CURLOPT_SSLVERSION, config->ssl_version | config->ssl_version_max);
                      my_setopt_enum(curl, CURLOPT_PROXY_SSLVERSION, config->proxy_ssl_version);
                  }
                  if (config->path_as_is)
                      my_setopt(curl, CURLOPT_PATH_AS_IS, 1L);
  
                  if (built_in_protos & (CURLPROTO_SCP | CURLPROTO_SFTP)) {
                      if (!config->insecure_ok) {
                          char* home;
                          char* file;
                          result = CURLE_FAILED_INIT;
                          home = homedir();
                          if (home) {
                              file = aprintf("%s/.ssh/known_hosts", home);
                              if (file) {
                                  /* new in curl 7.19.6 */
                                  result = res_setopt_str(curl, CURLOPT_SSH_KNOWNHOSTS, file);
                                  curl_free(file);
                                  if (result == CURLE_UNKNOWN_OPTION)
                                      /* libssh2 version older than 1.1.1 */
                                      result = CURLE_OK;
                              }
                              Curl_safefree(home);
                          } else {
                              errorf(global, "Failed to figure out user's home dir!");
                          }
                          if (result)
                              break;
                      }
                  }
  
                  if (config->no_body || config->remote_time) {
                      /* no body or use remote time */
                      my_setopt(curl, CURLOPT_FILETIME, 1L);
                  }
  
                  my_setopt(curl, CURLOPT_CRLF, config->crlf ? 1L : 0L);
                  my_setopt_slist(curl, CURLOPT_QUOTE, config->quote);
                  my_setopt_slist(curl, CURLOPT_POSTQUOTE, config->postquote);
                  my_setopt_slist(curl, CURLOPT_PREQUOTE, config->prequote);
  
                  if (config->cookie)
                      my_setopt_str(curl, CURLOPT_COOKIE, config->cookie);
  
                  if (config->cookiefile)
                      my_setopt_str(curl, CURLOPT_COOKIEFILE, config->cookiefile);
  
                  /* new in libcurl 7.9 */
                  if (config->cookiejar)
                      my_setopt_str(curl, CURLOPT_COOKIEJAR, config->cookiejar);
  
                  /* new in libcurl 7.9.7 */
                  my_setopt(curl, CURLOPT_COOKIESESSION, config->cookiesession ? 1L : 0L);
  
                  my_setopt_enum(curl, CURLOPT_TIMECONDITION, (long)config->timecond);
                  my_setopt(curl, CURLOPT_TIMEVALUE_LARGE, config->condtime);
                  my_setopt_str(curl, CURLOPT_CUSTOMREQUEST, config->customrequest);
                  customrequest_helper(config, config->httpreq, config->customrequest);
                  my_setopt(curl, CURLOPT_STDERR, global->errors);
  
                  /* three new ones in libcurl 7.3: */
                  my_setopt_str(curl, CURLOPT_INTERFACE, config->iface);
                  my_setopt_str(curl, CURLOPT_KRBLEVEL, config->krblevel);
                  progressbarinit(&per->progressbar, config);
  
                  if ((global->progressmode == CURL_PROGRESS_BAR) && !global->noprogress &&
                      !global->mute) {
                      /* we want the alternative style, then we have to implement it
                         ourselves! */
                      my_setopt(curl, CURLOPT_XFERINFOFUNCTION, tool_progress_cb);
                      my_setopt(curl, CURLOPT_XFERINFODATA, per);
                  } else if (per->uploadfile && !strcmp(per->uploadfile, ".")) {
                      /* when reading from stdin in non-blocking mode, we use the progress
                         function to unpause a busy read */
                      my_setopt(curl, CURLOPT_NOPROGRESS, 0L);
                      my_setopt(curl, CURLOPT_XFERINFOFUNCTION, tool_readbusy_cb);
                      my_setopt(curl, CURLOPT_XFERINFODATA, per);
                  }
  
                  /* new in libcurl 7.24.0: */
                  if (config->dns_servers)
                      my_setopt_str(curl, CURLOPT_DNS_SERVERS, config->dns_servers);
  
                  /* new in libcurl 7.33.0: */
                  if (config->dns_interface)
                      my_setopt_str(curl, CURLOPT_DNS_INTERFACE, config->dns_interface);
                  if (config->dns_ipv4_addr)
                      my_setopt_str(curl, CURLOPT_DNS_LOCAL_IP4, config->dns_ipv4_addr);
                  if (config->dns_ipv6_addr)
                      my_setopt_str(curl, CURLOPT_DNS_LOCAL_IP6, config->dns_ipv6_addr);
  
                  /* new in libcurl 7.6.2: */
                  my_setopt_slist(curl, CURLOPT_TELNETOPTIONS, config->telnet_options);
  
                  /* new in libcurl 7.7: */
                  my_setopt_str(curl, CURLOPT_RANDOM_FILE, config->random_file);
                  my_setopt_str(curl, CURLOPT_EGDSOCKET, config->egd_file);
                  my_setopt(curl, CURLOPT_CONNECTTIMEOUT_MS, (long)(config->connecttimeout * 1000));
  
                  if (config->doh_url)
                      my_setopt_str(curl, CURLOPT_DOH_URL, config->doh_url);
  
                  if (config->cipher_list)
                      my_setopt_str(curl, CURLOPT_SSL_CIPHER_LIST, config->cipher_list);
  
                  if (config->proxy_cipher_list)
                      my_setopt_str(curl, CURLOPT_PROXY_SSL_CIPHER_LIST, config->proxy_cipher_list);
  
                  if (config->cipher13_list)
                      my_setopt_str(curl, CURLOPT_TLS13_CIPHERS, config->cipher13_list);
  
                  if (config->proxy_cipher13_list)
                      my_setopt_str(curl, CURLOPT_PROXY_TLS13_CIPHERS, config->proxy_cipher13_list);
  
                  /* new in libcurl 7.9.2: */
                  if (config->disable_epsv)
                      /* disable it */
                      my_setopt(curl, CURLOPT_FTP_USE_EPSV, 0L);
  
                  /* new in libcurl 7.10.5 */
                  if (config->disable_eprt)
                      /* disable it */
                      my_setopt(curl, CURLOPT_FTP_USE_EPRT, 0L);
  
                  if (global->tracetype != TRACE_NONE) {
                      my_setopt(curl, CURLOPT_DEBUGFUNCTION, tool_debug_cb);
                      my_setopt(curl, CURLOPT_DEBUGDATA, config);
                      my_setopt(curl, CURLOPT_VERBOSE, 1L);
                  }
  
                  /* new in curl 7.9.3 */
                  if (config->engine) {
                      result = res_setopt_str(curl, CURLOPT_SSLENGINE, config->engine);
                      if (result)
                          break;
                  }
  
                  /* new in curl 7.10.7, extended in 7.19.4. Modified to use
                     CREATE_DIR_RETRY in 7.49.0 */
                  my_setopt(
                      curl,
                      CURLOPT_FTP_CREATE_MISSING_DIRS,
                      (long)(config->ftp_create_dirs ? CURLFTP_CREATE_DIR_RETRY : CURLFTP_CREATE_DIR_NONE));
  
                  /* new in curl 7.10.8 */
                  if (config->max_filesize)
                      my_setopt(curl, CURLOPT_MAXFILESIZE_LARGE, config->max_filesize);
  
                  if (4 == config->ip_version)
                      my_setopt(curl, CURLOPT_IPRESOLVE, CURL_IPRESOLVE_V4);
                  else if (6 == config->ip_version)
                      my_setopt(curl, CURLOPT_IPRESOLVE, CURL_IPRESOLVE_V6);
                  else
                      my_setopt(curl, CURLOPT_IPRESOLVE, CURL_IPRESOLVE_WHATEVER);
  
                  /* new in curl 7.15.5 */
                  if (config->ftp_ssl_reqd)
                      my_setopt_enum(curl, CURLOPT_USE_SSL, (long)CURLUSESSL_ALL);
  
                  /* new in curl 7.11.0 */
                  else if (config->ftp_ssl)
                      my_setopt_enum(curl, CURLOPT_USE_SSL, (long)CURLUSESSL_TRY);
  
                  /* new in curl 7.16.0 */
                  else if (config->ftp_ssl_control)
                      my_setopt_enum(curl, CURLOPT_USE_SSL, (long)CURLUSESSL_CONTROL);
  
                  /* new in curl 7.16.1 */
                  if (config->ftp_ssl_ccc)
                      my_setopt_enum(curl, CURLOPT_FTP_SSL_CCC, (long)config->ftp_ssl_ccc_mode);
  
                  /* new in curl 7.19.4 */
                  if (config->socks5_gssapi_nec)
                      my_setopt_str(curl, CURLOPT_SOCKS5_GSSAPI_NEC, config->socks5_gssapi_nec);
  
                  /* new in curl 7.55.0 */
                  if (config->socks5_auth)
                      my_setopt_bitmask(curl, CURLOPT_SOCKS5_AUTH, (long)config->socks5_auth);
  
                  /* new in curl 7.43.0 */
                  if (config->proxy_service_name)
                      my_setopt_str(curl, CURLOPT_PROXY_SERVICE_NAME, config->proxy_service_name);
  
                  /* new in curl 7.43.0 */
                  if (config->service_name)
                      my_setopt_str(curl, CURLOPT_SERVICE_NAME, config->service_name);
  
                  /* curl 7.13.0 */
                  my_setopt_str(curl, CURLOPT_FTP_ACCOUNT, config->ftp_account);
                  my_setopt(curl, CURLOPT_IGNORE_CONTENT_LENGTH, config->ignorecl ? 1L : 0L);
  
                  /* curl 7.14.2 */
                  my_setopt(curl, CURLOPT_FTP_SKIP_PASV_IP, config->ftp_skip_ip ? 1L : 0L);
  
                  /* curl 7.15.1 */
                  my_setopt(curl, CURLOPT_FTP_FILEMETHOD, (long)config->ftp_filemethod);
  
                  /* curl 7.15.2 */
                  if (config->localport) {
                      my_setopt(curl, CURLOPT_LOCALPORT, config->localport);
                      my_setopt_str(curl, CURLOPT_LOCALPORTRANGE, config->localportrange);
                  }
  
                  /* curl 7.15.5 */
                  my_setopt_str(
                      curl, CURLOPT_FTP_ALTERNATIVE_TO_USER, config->ftp_alternative_to_user);
  
                  /* curl 7.16.0 */
                  if (config->disable_sessionid)
                      /* disable it */
                      my_setopt(curl, CURLOPT_SSL_SESSIONID_CACHE, 0L);
  
                  /* curl 7.16.2 */
                  if (config->raw) {
                      my_setopt(curl, CURLOPT_HTTP_CONTENT_DECODING, 0L);
                      my_setopt(curl, CURLOPT_HTTP_TRANSFER_DECODING, 0L);
                  }
  
                  /* curl 7.17.1 */
                  if (!config->nokeepalive) {
                      my_setopt(curl, CURLOPT_TCP_KEEPALIVE, 1L);
                      if (config->alivetime != 0) {
                          my_setopt(curl, CURLOPT_TCP_KEEPIDLE, config->alivetime);
                          my_setopt(curl, CURLOPT_TCP_KEEPINTVL, config->alivetime);
                      }
                  } else
                      my_setopt(curl, CURLOPT_TCP_KEEPALIVE, 0L);
  
                  /* curl 7.20.0 */
                  if (config->tftp_blksize)
                      my_setopt(curl, CURLOPT_TFTP_BLKSIZE, config->tftp_blksize);
  
                  if (config->mail_from)
                      my_setopt_str(curl, CURLOPT_MAIL_FROM, config->mail_from);
  
                  if (config->mail_rcpt)
                      my_setopt_slist(curl, CURLOPT_MAIL_RCPT, config->mail_rcpt);
  
                  /* curl 7.69.x */
                  my_setopt(
                      curl, CURLOPT_MAIL_RCPT_ALLLOWFAILS, config->mail_rcpt_allowfails ? 1L : 0L);
  
                  /* curl 7.20.x */
                  if (config->ftp_pret)
                      my_setopt(curl, CURLOPT_FTP_USE_PRET, 1L);
  
                  if (config->proto_present)
                      my_setopt_flags(curl, CURLOPT_PROTOCOLS, config->proto);
                  if (config->proto_redir_present)
                      my_setopt_flags(curl, CURLOPT_REDIR_PROTOCOLS, config->proto_redir);
  
                  if (config->content_disposition && (urlnode->flags & GETOUT_USEREMOTE))
                      hdrcbdata->honor_cd_filename = TRUE;
                  else
                      hdrcbdata->honor_cd_filename = FALSE;
  
                  hdrcbdata->outs = outs;
                  hdrcbdata->heads = heads;
                  hdrcbdata->etag_save = etag_save;
                  hdrcbdata->global = global;
                  hdrcbdata->config = config;
  
                  my_setopt(curl, CURLOPT_HEADERFUNCTION, tool_header_cb);
                  my_setopt(curl, CURLOPT_HEADERDATA, per);
  
                  if (config->resolve)
                      /* new in 7.21.3 */
                      my_setopt_slist(curl, CURLOPT_RESOLVE, config->resolve);
  
                  if (config->connect_to)
                      /* new in 7.49.0 */
                      my_setopt_slist(curl, CURLOPT_CONNECT_TO, config->connect_to);
  
                  /* new in 7.21.4 */
                  if (curlinfo->features & CURL_VERSION_TLSAUTH_SRP) {
                      if (config->tls_username)
                          my_setopt_str(curl, CURLOPT_TLSAUTH_USERNAME, config->tls_username);
                      if (config->tls_password)
                          my_setopt_str(curl, CURLOPT_TLSAUTH_PASSWORD, config->tls_password);
                      if (config->tls_authtype)
                          my_setopt_str(curl, CURLOPT_TLSAUTH_TYPE, config->tls_authtype);
                      if (config->proxy_tls_username)
                          my_setopt_str(
                              curl, CURLOPT_PROXY_TLSAUTH_USERNAME, config->proxy_tls_username);
                      if (config->proxy_tls_password)
                          my_setopt_str(
                              curl, CURLOPT_PROXY_TLSAUTH_PASSWORD, config->proxy_tls_password);
                      if (config->proxy_tls_authtype)
                          my_setopt_str(curl, CURLOPT_PROXY_TLSAUTH_TYPE, config->proxy_tls_authtype);
                  }
  
                  /* new in 7.22.0 */
                  if (config->gssapi_delegation)
                      my_setopt_str(curl, CURLOPT_GSSAPI_DELEGATION, config->gssapi_delegation);
  
                  /* new in 7.25.0, 7.44.0 and 7.70.0 */
                  {
                      long mask =
                          (config->ssl_allow_beast ? CURLSSLOPT_ALLOW_BEAST : 0) |
                          (config->ssl_revoke_best_effort ? CURLSSLOPT_REVOKE_BEST_EFFORT : 0) |
                          (config->ssl_no_revoke ? CURLSSLOPT_NO_REVOKE : 0);
                      if (mask)
                          my_setopt_bitmask(curl, CURLOPT_SSL_OPTIONS, mask);
                  }
  
                  if (config->proxy_ssl_allow_beast)
                      my_setopt(curl, CURLOPT_PROXY_SSL_OPTIONS, (long)CURLSSLOPT_ALLOW_BEAST);
  
                  if (config->mail_auth)
                      my_setopt_str(curl, CURLOPT_MAIL_AUTH, config->mail_auth);
  
                  /* new in 7.66.0 */
                  if (config->sasl_authzid)
                      my_setopt_str(curl, CURLOPT_SASL_AUTHZID, config->sasl_authzid);
  
                  /* new in 7.31.0 */
                  if (config->sasl_ir)
                      my_setopt(curl, CURLOPT_SASL_IR, 1L);
  
                  if (config->nonpn) {
                      my_setopt(curl, CURLOPT_SSL_ENABLE_NPN, 0L);
                  }
  
                  if (config->noalpn) {
                      my_setopt(curl, CURLOPT_SSL_ENABLE_ALPN, 0L);
                  }
  
                  /* new in 7.40.0, abstract support added in 7.53.0 */
                  if (config->unix_socket_path) {
                      if (config->abstract_unix_socket) {
                          my_setopt_str(curl, CURLOPT_ABSTRACT_UNIX_SOCKET, config->unix_socket_path);
                      } else {
                          my_setopt_str(curl, CURLOPT_UNIX_SOCKET_PATH, config->unix_socket_path);
                      }
                  }
  
                  /* new in 7.45.0 */
                  if (config->proto_default)
                      my_setopt_str(curl, CURLOPT_DEFAULT_PROTOCOL, config->proto_default);
  
                  /* new in 7.47.0 */
                  if (config->expect100timeout > 0)
                      my_setopt_str(
                          curl,
                          CURLOPT_EXPECT_100_TIMEOUT_MS,
                          (long)(config->expect100timeout * 1000));
  
                  /* new in 7.48.0 */
                  if (config->tftp_no_options)
                      my_setopt(curl, CURLOPT_TFTP_NO_OPTIONS, 1L);
  
                  /* new in 7.59.0 */
                  if (config->happy_eyeballs_timeout_ms != CURL_HET_DEFAULT)
                      my_setopt(
                          curl, CURLOPT_HAPPY_EYEBALLS_TIMEOUT_MS, config->happy_eyeballs_timeout_ms);
  
                  /* new in 7.60.0 */
                  if (config->haproxy_protocol)
                      my_setopt(curl, CURLOPT_HAPROXYPROTOCOL, 1L);
  
                  if (config->disallow_username_in_url)
                      my_setopt(curl, CURLOPT_DISALLOW_USERNAME_IN_URL, 1L);
  
                  if (config->altsvc)
                      my_setopt_str(curl, CURLOPT_ALTSVC, config->altsvc);
  
  #ifdef USE_METALINK
                  if (!metalink && config->use_metalink) {
                      outs->metalink_parser = metalink_parser_context_new();
                      if (outs->metalink_parser == NULL) {
                          result = CURLE_OUT_OF_MEMORY;
                          break;
                      }
                      fprintf(
                          config->global->errors,
                          "Metalink: parsing (%s) metalink/XML...\n",
                          per->this_url);
                  } else if (metalink)
                      fprintf(
                          config->global->errors,
                          "Metalink: fetching (%s) from (%s)...\n",
                          mlfile->filename,
                          per->this_url);
  #endif /* USE_METALINK */
  
                  per->metalink = metalink;
                  /* initialize retry vars for loop below */
                  per->retry_sleep_default = (config->retry_delay) ? config->retry_delay * 1000L :
                                                                     RETRY_SLEEP_DEFAULT; /* ms */
                  per->retry_numretries = config->req_retry;
                  per->retry_sleep = per->retry_sleep_default; /* ms */
                  per->retrystart = tvnow();
  
                  state->li++;
                  /* Here's looping around each globbed URL */
                  if (state->li >= urlnum) {
                      state->li = 0;
                      state->urlnum = 0; /* forced reglob of URLs */
                      glob_cleanup(state->urls);
                      state->urls = NULL;
                      state->up++;
                      Curl_safefree(state->uploadfile); /* clear it to get the next */
                  }
              } else {
                  /* Free this URL node data without destroying the
                     the node itself nor modifying next pointer. */
                  Curl_safefree(urlnode->outfile);
                  Curl_safefree(urlnode->infile);
                  urlnode->flags = 0;
                  glob_cleanup(state->urls);
                  state->urls = NULL;
                  state->urlnum = 0;
  
                  Curl_safefree(state->outfiles);
                  Curl_safefree(state->uploadfile);
                  if (state->inglob) {
                      /* Free list of globbed upload files */
                      glob_cleanup(state->inglob);
                      state->inglob = NULL;
                  }
                  config->state.urlnode = urlnode->next;
                  state->up = 0;
                  continue;
              }
          }
          break;
      }
  
      if (!*added || result) {
          *added = FALSE;
          single_transfer_cleanup(config);
      }
      return result;
  }
  
  static long all_added; /* number of easy handles currently added */
  
  /*
   * add_parallel_transfers() sets 'morep' to TRUE if there are more transfers
   * to add even after this call returns. sets 'addedp' to TRUE if one or more
   * transfers were added.
   */
  static CURLcode add_parallel_transfers(
      struct GlobalConfig* global, CURLM* multi, CURLSH* share, bool* morep, bool* addedp)
  {
      struct per_transfer* per;
      CURLcode result = CURLE_OK;
      CURLMcode mcode;
      *addedp = FALSE;
      *morep = FALSE;
      result = create_transfer(global, share, addedp);
      if (result)
          return result;
      for (per = transfers; per && (all_added < global->parallel_max); per = per->next) {
          bool getadded = FALSE;
          if (per->added)
              /* already added */
              continue;
  
          result = pre_transfer(global, per);
          if (result)
              break;
  
          /* parallel connect means that we don't set PIPEWAIT since pipewait
             will make libcurl prefer multiplexing */
          (void)curl_easy_setopt(per->curl, CURLOPT_PIPEWAIT, global->parallel_connect ? 0L : 1L);
          (void)curl_easy_setopt(per->curl, CURLOPT_PRIVATE, per);
          (void)curl_easy_setopt(per->curl, CURLOPT_XFERINFOFUNCTION, xferinfo_cb);
          (void)curl_easy_setopt(per->curl, CURLOPT_XFERINFODATA, per);
  
          mcode = curl_multi_add_handle(multi, per->curl);
          if (mcode)
              return CURLE_OUT_OF_MEMORY;
  
          result = create_transfer(global, share, &getadded);
          if (result)
              return result;
          per->added = TRUE;
          all_added++;
          *addedp = TRUE;
      }
      *morep = per ? TRUE : FALSE;
      return CURLE_OK;
  }
  
  static CURLcode parallel_transfers(struct GlobalConfig* global, CURLSH* share)
  {
      CURLM* multi;
      CURLMcode mcode = CURLM_OK;
      CURLcode result = CURLE_OK;
      int still_running = 1;
      struct timeval start = tvnow();
      bool more_transfers;
      bool added_transfers;
  
      multi = curl_multi_init();
      if (!multi)
          return CURLE_OUT_OF_MEMORY;
  
      result = add_parallel_transfers(global, multi, share, &more_transfers, &added_transfers);
      if (result) {
          curl_multi_cleanup(multi);
          return result;
      }
  
      while (!mcode && (still_running || more_transfers)) {
          mcode = curl_multi_poll(multi, NULL, 0, 1000, NULL);
          if (!mcode)
              mcode = curl_multi_perform(multi, &still_running);
  
          progress_meter(global, &start, FALSE);
  
          if (!mcode) {
              int rc;
              CURLMsg* msg;
              bool removed = FALSE;
              do {
                  msg = curl_multi_info_read(multi, &rc);
                  if (msg) {
                      bool retry;
                      struct per_transfer* ended;
                      CURL* easy = msg->easy_handle;
                      result = msg->data.result;
                      curl_easy_getinfo(easy, CURLINFO_PRIVATE, (void*)&ended);
                      curl_multi_remove_handle(multi, easy);
  
                      result = post_per_transfer(global, ended, result, &retry);
                      if (retry)
                          continue;
                      progress_finalize(ended); /* before it goes away */
                      all_added--; /* one fewer added */
                      removed = TRUE;
                      (void)del_per_transfer(ended);
                  }
              } while (msg);
              if (removed) {
                  /* one or more transfers completed, add more! */
                  (void)add_parallel_transfers(
                      global, multi, share, &more_transfers, &added_transfers);
                  if (added_transfers)
                      /* we added new ones, make sure the loop doesn't exit yet */
                      still_running = 1;
              }
          }
      }
  
      (void)progress_meter(global, &start, TRUE);
  
      /* Make sure to return some kind of error if there was a multi problem */
      if (mcode) {
          result = (mcode == CURLM_OUT_OF_MEMORY) ? CURLE_OUT_OF_MEMORY :
                                                    /* The other multi errors should never happen, so
                                                       return something suitably generic */
                       CURLE_BAD_FUNCTION_ARGUMENT;
      }
  
      curl_multi_cleanup(multi);
  
      return result;
  }
  
  static CURLcode serial_transfers(struct GlobalConfig* global, CURLSH* share)
  {
      CURLcode returncode = CURLE_OK;
      CURLcode result = CURLE_OK;
      struct per_transfer* per;
      bool added = FALSE;
  
      result = create_transfer(global, share, &added);
      if (result || !added)
          return result;
      for (per = transfers; per;) {
          bool retry;
          bool bailout = FALSE;
          result = pre_transfer(global, per);
          if (result)
              break;
  
  #ifndef CURL_DISABLE_LIBCURL_OPTION
          if (global->libcurl) {
              result = easysrc_perform();
              if (result)
                  break;
          }
  #endif
  #ifdef CURLDEBUG
          if (global->test_event_based)
              result = curl_easy_perform_ev(per->curl);
          else
  #endif
              result = curl_easy_perform(per->curl);
  
          /* store the result of the actual transfer */
          returncode = result;
  
          result = post_per_transfer(global, per, result, &retry);
          if (retry)
              continue;
  
          /* Bail out upon critical errors or --fail-early */
          if (result || is_fatal_error(returncode) || (returncode && global->fail_early))
              bailout = TRUE;
          else {
              /* setup the next one just before we delete this */
              result = create_transfer(global, share, &added);
              if (result)
                  bailout = TRUE;
          }
  
          /* Release metalink related resources here */
          delete_metalinkfile(per->mlfile);
  
          per = del_per_transfer(per);
  
          if (bailout)
              break;
      }
      if (returncode)
          /* returncode errors have priority */
          result = returncode;
  
      if (result)
          single_transfer_cleanup(global->current);
  
      return result;
  }
  
  /* setup a transfer for the given config */
  static CURLcode transfer_per_config(
      struct GlobalConfig* global, struct OperationConfig* config, CURLSH* share, bool* added)
  {
      CURLcode result = CURLE_OK;
      bool capath_from_env;
      *added = FALSE;
  
      /* Check we have a url */
      if (!config->url_list || !config->url_list->url) {
          helpf(global->errors, "no URL specified!\n");
          return CURLE_FAILED_INIT;
      }
  
      /* On WIN32 we can't set the path to curl-ca-bundle.crt
       * at compile time. So we look here for the file in two ways:
       * 1: look at the environment variable CURL_CA_BUNDLE for a path
       * 2: if #1 isn't found, use the windows API function SearchPath()
       *    to find it along the app's path (includes app's dir and CWD)
       *
       * We support the environment variable thing for non-Windows platforms
       * too. Just for the sake of it.
       */
      capath_from_env = false;
      if (!config->cacert && !config->capath && !config->insecure_ok) {
          CURL* curltls = curl_easy_init();
          struct curl_tlssessioninfo* tls_backend_info = NULL;
  
          /* With the addition of CAINFO support for Schannel, this search could find
           * a certificate bundle that was previously ignored. To maintain backward
           * compatibility, only perform this search if not using Schannel.
           */
          result = curl_easy_getinfo(curltls, CURLINFO_TLS_SSL_PTR, &tls_backend_info);
          if (result)
              return result;
  
          /* Set the CA cert locations specified in the environment. For Windows if
           * no environment-specified filename is found then check for CA bundle
           * default filename curl-ca-bundle.crt in the user's PATH.
           *
           * If Schannel is the selected SSL backend then these locations are
           * ignored. We allow setting CA location for schannel only when explicitly
           * specified by the user via CURLOPT_CAINFO / --cacert.
           */
          if (tls_backend_info->backend != CURLSSLBACKEND_SCHANNEL) {
              char* env;
              env = curlx_getenv("CURL_CA_BUNDLE");
              if (env) {
                  config->cacert = strdup(env);
                  if (!config->cacert) {
                      curl_free(env);
                      errorf(global, "out of memory\n");
                      return CURLE_OUT_OF_MEMORY;
                  }
              } else {
                  env = curlx_getenv("SSL_CERT_DIR");
                  if (env) {
                      config->capath = strdup(env);
                      if (!config->capath) {
                          curl_free(env);
                          helpf(global->errors, "out of memory\n");
                          return CURLE_OUT_OF_MEMORY;
                      }
                      capath_from_env = true;
                  } else {
                      env = curlx_getenv("SSL_CERT_FILE");
                      if (env) {
                          config->cacert = strdup(env);
                          if (!config->cacert) {
                              curl_free(env);
                              errorf(global, "out of memory\n");
                              return CURLE_OUT_OF_MEMORY;
                          }
                      }
                  }
              }
  
              if (env)
                  curl_free(env);
  #ifdef WIN32
              else {
                  result = FindWin32CACert(config, tls_backend_info->backend, "curl-ca-bundle.crt");
              }
  #endif
          }
          curl_easy_cleanup(curltls);
      }
  
      if (!result)
          result = single_transfer(global, config, share, capath_from_env, added);
  
      return result;
  }
  
  /*
   * 'create_transfer' gets the details and sets up a new transfer if 'added'
   * returns TRUE.
   */
  static CURLcode create_transfer(struct GlobalConfig* global, CURLSH* share, bool* added)
  {
      CURLcode result = CURLE_OK;
      *added = FALSE;
      while (global->current) {
          result = transfer_per_config(global, global->current, share, added);
          if (!result && !*added) {
              /* when one set is drained, continue to next */
              global->current = global->current->next;
              continue;
          }
          break;
      }
      return result;
  }
  
  static CURLcode run_all_transfers(struct GlobalConfig* global, CURLSH* share, CURLcode result)
  {
      /* Save the values of noprogress and isatty to restore them later on */
      bool orig_noprogress = global->noprogress;
      bool orig_isatty = global->isatty;
      struct per_transfer* per;
  
      /* Time to actually do the transfers */
      if (!result) {
          if (global->parallel)
              result = parallel_transfers(global, share);
          else
              result = serial_transfers(global, share);
      }
  
      /* cleanup if there are any left */
      for (per = transfers; per;) {
          bool retry;
          CURLcode result2 = post_per_transfer(global, per, result, &retry);
          if (!result)
              /* don't overwrite the original error */
              result = result2;
  
          /* Free list of given URLs */
          clean_getout(per->config);
  
          /* Release metalink related resources here */
          clean_metalink(per->config);
          per = del_per_transfer(per);
      }
  
      /* Reset the global config variables */
      global->noprogress = orig_noprogress;
      global->isatty = orig_isatty;
  
      return result;
  }
  
  CURLcode operate(struct GlobalConfig* global, int argc, argv_item_t argv[])
  {
      CURLcode result = CURLE_OK;
  
      /* Setup proper locale from environment */
  #ifdef HAVE_SETLOCALE
      setlocale(LC_ALL, "");
  #endif
  
      /* Parse .curlrc if necessary */
      if ((argc == 1) || (!curl_strequal(argv[1], "-q") && !curl_strequal(argv[1], "--disable"))) {
          parseconfig(NULL, global); /* ignore possible failure */
  
          /* If we had no arguments then make sure a url was specified in .curlrc */
          if ((argc < 2) && (!global->first->url_list)) {
              helpf(global->errors, NULL);
              result = CURLE_FAILED_INIT;
          }
      }
  
      if (!result) {
          /* Parse the command line arguments */
          ParameterError res = parse_args(global, argc, argv);
          if (res) {
              result = CURLE_OK;
  
              /* Check if we were asked for the help */
              if (res == PARAM_HELP_REQUESTED)
                  tool_help();
              /* Check if we were asked for the manual */
              else if (res == PARAM_MANUAL_REQUESTED)
                  hugehelp();
              /* Check if we were asked for the version information */
              else if (res == PARAM_VERSION_INFO_REQUESTED)
                  tool_version_info();
              /* Check if we were asked to list the SSL engines */
              else if (res == PARAM_ENGINES_REQUESTED)
                  tool_list_engines();
              else if (res == PARAM_LIBCURL_UNSUPPORTED_PROTOCOL)
                  result = CURLE_UNSUPPORTED_PROTOCOL;
              else
                  result = CURLE_FAILED_INIT;
          } else {
  #ifndef CURL_DISABLE_LIBCURL_OPTION
              if (global->libcurl) {
                  /* Initialise the libcurl source output */
                  result = easysrc_init();
              }
  #endif
  
              /* Perform the main operations */
              if (!result) {
                  size_t count = 0;
                  struct OperationConfig* operation = global->first;
                  CURLSH* share = curl_share_init();
                  if (!share) {
  #ifndef CURL_DISABLE_LIBCURL_OPTION
                      if (global->libcurl) {
                          /* Cleanup the libcurl source output */
                          easysrc_cleanup();
                      }
  #endif
                      return CURLE_OUT_OF_MEMORY;
                  }
  
                  curl_share_setopt(share, CURLSHOPT_SHARE, CURL_LOCK_DATA_COOKIE);
                  curl_share_setopt(share, CURLSHOPT_SHARE, CURL_LOCK_DATA_DNS);
                  curl_share_setopt(share, CURLSHOPT_SHARE, CURL_LOCK_DATA_SSL_SESSION);
                  curl_share_setopt(share, CURLSHOPT_SHARE, CURL_LOCK_DATA_CONNECT);
                  curl_share_setopt(share, CURLSHOPT_SHARE, CURL_LOCK_DATA_PSL);
  
                  /* Get the required arguments for each operation */
                  do {
                      result = get_args(operation, count++);
  
                      operation = operation->next;
                  } while (!result && operation);
  
                  /* Set the current operation pointer */
                  global->current = global->first;
  
                  /* now run! */
                  result = run_all_transfers(global, share, result);
  
                  curl_share_cleanup(share);
  #ifndef CURL_DISABLE_LIBCURL_OPTION
                  if (global->libcurl) {
                      /* Cleanup the libcurl source output */
                      easysrc_cleanup();
  
                      /* Dump the libcurl code if previously enabled */
                      dumpeasysrc(global);
                  }
  #endif
              } else
                  errorf(global, "out of memory\n");
          }
      }
  
      return result;
  }
  