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<?php |
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namespace CSFCloud\Azure; |
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use CSFCloud\Shell\CommandRunner; |
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class Storage { |
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private $connection_string; |
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private $container; |
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private $account_name; |
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private $account_key; |
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private $exec; |
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public function __construct(string $container, string $connection_string) { |
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$this->exec = new CommandRunner(); |
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$this->connection_string = $connection_string; |
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$this->container = $container; |
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$dt = explode(";", $this->connection_string); |
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foreach ($dt as $pair) { |
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$pdt = explode("=", $pair); |
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if ($pdt[0] == "AccountName") { |
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$this->account_name = str_ireplace("AccountName=", "", $pdt[1]); |
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} else if ($pdt[0] == "AccountKey") { |
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$this->account_key = str_ireplace("AccountKey=", "", $pdt[1]); |
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} |
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} |
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} |
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protected function run($cmd) : string { |
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$logfile = $this->exec->run(CommandRunner::COMMAND_SYNC, __DIR__, $cmd, true); |
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$log = $logfile->getText(); |
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$logfile->delete(); |
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return $log; |
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} |
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public function getContainer() : string { |
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return $this->container; |
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} |
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public function getAccountName() : string { |
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$this->account_name; |
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} |
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public function uploadToBlob(string $file, string $name, string $content_type = null) { |
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if (!file_exists($file) || !is_file($file)) { |
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throw new Exception("Invalid file"); |
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} |
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$cmd = "az storage blob upload"; |
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$cmd .= " -c " . escapeshellarg($this->container); |
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$cmd .= " -f " . escapeshellarg($file); |
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$cmd .= " -n " . escapeshellarg($name); |
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if ($content_type != null) { |
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$cmd .= " --content-type " . escapeshellarg($content_type); |
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} else { |
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$cmd .= " --content-type " . escapeshellarg(mime_content_type($file)); |
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} |
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$cmd .= " --connection-string " . escapeshellarg($this->connection_string); |
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$log = $this->run($cmd); |
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return $log; |
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} |
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public function GenerateBlobSas(string $name, int $expire = 5 * 60 * 60, string $ip = null) : string { |
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$signedPermissions = "r"; |
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//$signedStart = gmdate("Y-m-d\TH:i\Z", time()); |
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$signedExpiry = gmdate("Y-m-d\TH:i\Z", time() + $expire); |
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$signedProtocol = "https"; |
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$signedVersion = "2017-07-29";//"2016-05-31"; |
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$parameters = array(); |
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$parameters[] = $signedPermissions; |
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$parameters[] = ""; // signedStart; |
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$parameters[] = $signedExpiry; |
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$parameters[] = "/blob/" . $this->account_name . "/" . $this->container . "/" . $name; |
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$parameters[] = ""; // signedIdentifier |
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if ($ip == null) { |
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$parameters[] = ""; |
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} else { |
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$parameters[] = $ip; |
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} |
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$parameters[] = $signedProtocol; |
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$parameters[] = $signedVersion; |
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$parameters[] = ""; // cacheControl |
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$parameters[] = ""; // contentDisposition |
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$parameters[] = ""; // contentEncoding |
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$parameters[] = ""; // contentLanguage |
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$parameters[] = ""; // contentType |
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$stringToSign = utf8_encode(implode("\n", $parameters)); |
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$decodedAccountKey = base64_decode($this->account_key); |
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$signature = hash_hmac("sha256", $stringToSign, $decodedAccountKey, true); |
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$sig = urlencode(base64_encode($signature)); |
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$sas = 'sv=' . $signedVersion; |
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$sas .= '&sr=' . "b"; |
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//$sas .= $buildOptQueryStr($cacheControl, '&rscc='); |
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//$sas .= $buildOptQueryStr($contentDisposition, '&rscd='); |
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//$sas .= $buildOptQueryStr($contentEncoding, '&rsce='); |
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//$sas .= $buildOptQueryStr($contentLanguage, '&rscl='); |
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//$sas .= $buildOptQueryStr($contentType, '&rsct='); |
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//$sas .= $buildOptQueryStr($signedStart, '&st='); |
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$sas .= '&se=' . $signedExpiry; |
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$sas .= '&sp=' . $signedPermissions; |
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if ($ip != null) { |
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$sas .= '&sip=' . $ip; |
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} |
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$sas .= '&spr=' . $signedProtocol; |
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//$sas .= $buildOptQueryStr($signedIdentifier, '&si='); |
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$sas .= '&sig=' . $sig; |
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return $sas; |
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} |
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public function getBlobUrl(string $name) { |
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$url = "https://" . $this->account_name . ".blob.core.windows.net/" . $this->container . "/" . $name; |
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return $url; |
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} |
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} |
For hinted functions/methods where all return statements with the correct type are only reachable via conditions, ?null? gets implicitly returned which may be incompatible with the hinted type. Let?s take a look at an example: