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);
  
            {
              long mask =
                (config->ssl_allow_beast ? CURLSSLOPT_ALLOW_BEAST : 0) |
                (config->ssl_revoke_best_effort ?
                 CURLSSLOPT_REVOKE_BEST_EFFORT : 0) |
                (config->native_ca_store ?
                 CURLSSLOPT_NATIVE_CA : 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->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);
  
          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");
  #if defined(USE_WIN32_CRYPTO)
          if(!config->cacert && !config->capath) {
            /* user, and environement did not specify any ca file or path
               and there is no "curl-ca-bundle.crt" file in standard path
               so the only possible solution is using the windows ca store */
            config->native_ca_store = TRUE;
          }
  #endif
        }
  #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;
  }
  