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(* virt-v2v
* Copyright (C) 2009-2020 Red Hat Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*)
open Printf
open Std_utils
open Tools_utils
open Common_gettext.Gettext
open Xml
open Utils
let source_re = PCRE.compile "^\\[(.*)\\] (.*)\\.vmdk$"
let snapshot_re = PCRE.compile "^(.*)-\\d{6}(\\.vmdk)$"
let rec start_nbdkit_for_path ?bandwidth ?cor ?password_file
dcPath uri server path
socket =
(* If no_verify=1 was passed in the libvirt URI, then we have to
* turn off certificate verification here too.
*)
let sslverify =
match uri.uri_query_raw with
| None -> true
| Some query ->
(* XXX only works if the query string is not URI-quoted *)
String.find query "no_verify=1" = -1 in
(* Check the URL exists and authentication info is correct. *)
let https_url =
let https_url = get_https_url dcPath uri server path in
let status, dump_response =
fetch_headers_from_url password_file uri sslverify https_url in
(* If a disk is actually a snapshot image it will have '-00000n'
* appended to its name, e.g.:
* [yellow:storage1] RHEL4-X/RHEL4-X-000003.vmdk
* The flat storage is still called RHEL4-X-flat, however. If we got
* a 404 and the vmdk name looks like it might be a snapshot, try
* again without the snapshot suffix.
*)
let https_url, status, dump_response =
if status = "404" && PCRE.matches snapshot_re path then (
let path = PCRE.sub 1 ^ PCRE.sub 2 in
let https_url = get_https_url dcPath uri server path in
let status, dump_response =
fetch_headers_from_url password_file uri sslverify https_url in
https_url, status, dump_response
)
else (https_url, status, dump_response) in
if status = "401" then (
dump_response stderr;
if uri.uri_user <> None then
error (f_"vcenter: incorrect username or password")
else
error (f_"vcenter: incorrect username or password. You might need \
to specify the username in the URI like this: \
[vpx|esx|..]://USERNAME@[etc]")
);
if status = "404" then (
dump_response stderr;
error (f_"vcenter: URL not found: %s") https_url
);
if status <> "200" then (
dump_response stderr;
error (f_"vcenter: invalid response from server: %s") status
);
https_url in
(* Write a cookie script to retrieve the session cookie.
* See nbdkit-curl-plugin(1) "Example: VMware ESXi cookies"
*)
let cookie_script, chan =
Filename.open_temp_file ~perms:0o700 "v2vcs" ".sh" in
On_exit.unlink cookie_script;
let fpf fs = fprintf chan fs in
fpf "#!/bin/sh -\n";
fpf "\n";
fpf "curl --head -s";
if not sslverify then fpf " --insecure";
(match uri.uri_user, password_file with
| None, None -> ()
| Some user, None -> fpf " -u %s" (quote user)
| None, Some password_file ->
fpf " -u \"$LOGNAME\":\"$(cat %s)\"" (quote password_file)
| Some user, Some password_file ->
fpf " -u %s:\"$(cat %s)\"" (quote user) (quote password_file)
);
fpf " %s" (quote https_url);
fpf " |\n";
fpf "\tsed -ne %s\n" (quote "{ s/^Set-Cookie: \\([^;]*\\);.*/\\1/ip }");
close_out chan;
(* VMware authentication expires after 30 minutes so we must renew
* after < 30 minutes.
*)
let cookie_script_renew = 25*60 in
let nbdkit =
Nbdkit_curl.create_curl ?bandwidth ?cor
~cookie_script ~cookie_script_renew
~sslverify https_url in
let _, pid = Nbdkit.run_unix socket nbdkit in
pid
and get_https_url dcPath uri server path =
if not (PCRE.matches source_re path) then
path
else (
let datastore = PCRE.sub 1 and path = PCRE.sub 2 in
let port =
match uri.uri_port with
| 443 -> ""
| n when n >= 1 -> ":" ^ string_of_int n
| _ -> "" in
(* XXX Need to handle templates. The file is called "-delta.vmdk" in
* place of "-flat.vmdk".
*)
sprintf "https://%s%s/folder/%s-flat.vmdk?dcPath=%s&dsName=%s"
server port
(uri_quote path) (uri_quote dcPath) (uri_quote datastore)
)
(* Fetch the status from a URL. *)
and fetch_headers_from_url password_file uri sslverify https_url =
let curl_args = ref [
"head", None;
"silent", None;
] in
(match uri.uri_user, password_file with
| None, None -> ()
| None, Some _ ->
warning (f_"-ip PASSWORD_FILE parameter ignored because \
'user@' was not given in the URL")
| Some user, None ->
List.push_back curl_args ("user", Some user)
| Some user, Some password_file ->
let password = read_first_line_from_file password_file in
List.push_back curl_args ("user", Some (user ^ ":" ^ password))
);
if not sslverify then List.push_back curl_args ("insecure", None);
let curl_h = Curl.create !curl_args https_url in
let lines = Curl.run curl_h in
let dump_response chan =
Curl.print chan curl_h;
(* Dump out the output of the command. *)
List.iter (fun x -> fprintf chan "%s\n" x) lines;
flush chan
in
if verbose () then dump_response stderr;
let statuses, headers =
List.partition (
fun line ->
let len = String.length line in
len >= 12 && String.sub line 0 5 = "HTTP/"
) lines in
(* Look for the last HTTP/x.y NNN status code in the output. *)
let status =
match statuses with
| [] ->
dump_response stderr;
error (f_"vcenter: no status code in output of ‘curl’ command.")
| ss ->
let s = List.hd (List.rev ss) in
String.sub s (String.index s ' ' + 1) 3 in
status, dump_response
|
