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global-functions: introduce $FetchHuge

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Christian Hesse 2024-03-27 23:01:38 +01:00
parent 86d0f71acb
commit 5323052290
2 changed files with 39 additions and 2 deletions
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39
global-functions.rsc
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@ -4,7 +4,7 @@
# Michael Gisbers <michael@gisbers.de>
# https://git.eworm.de/cgit/routeros-scripts/about/COPYING.md
#
# requires RouterOS, version=7.12
# requires RouterOS, version=7.13
#
# global functions
# https://git.eworm.de/cgit/routeros-scripts/about/
@ -32,6 +32,7 @@
:global DownloadPackage;
:global EitherOr;
:global EscapeForRegEx;
:global FetchHuge;
:global FetchUserAgentStr;
:global FormatLine;
:global FormatMultiLines;
@ -389,6 +390,42 @@
:return $Return;
}
# fetch huge data to file, read in chunks
:set FetchHuge do={
:local ScriptName [ :tostr $1 ];
:local Url [ :tostr $2 ];
:global GetRandom20CharAlNum;
:global LogPrint;
:global MkDir;
:global WaitForFile;
:if ([ $MkDir "tmpfs/" . $ScriptName ] = false) do={
$LogPrint error $0 ("Failed creating directory!");
:return false;
}
:local FileName ("tmpfs/" . $ScriptName . "/" . $0 . "-" . [ $GetRandom20CharAlNum ]);
:do {
/tool/fetch check-certificate=yes-without-crl $Url dst-path=$FileName as-value;
} on-error={
$LogPrint debug $0 ("Failed downloading from: " . $Url);
:return false;
}
$WaitForFile $FileName;
:local FileSize [ /file/get $FileName size ];
:local Return "";
:local VarSize 0;
:while ($VarSize < $FileSize) do={
:set Return ($Return . ([ /file/read offset=$VarSize chunk-size=32768 file=$FileName as-value ]->"data"));
:set VarSize [ :len $Return ];
}
/file/remove $FileName;
:return $Return;
}
# generate user agent string for fetch
:set FetchUserAgentStr do={
:local Caller [ :tostr $1 ];