通过套接字发送表情符号时出现 Perl 问题

Perl issues while sending emojis over socket

我的 Perl 脚本将推送通知发送到 Apple APNS 服务器。它有效,除非我尝试发送表情符号(特殊字符)。

我的代码

use DBI;
use JSON;
use Net::APNS::Persistent;
use Data::Dumper;
use Encode;

my $cfg;
my $apns;

...;

sub connect {
    my ($sandbox, $cert, $key, $pass) = $cfg->getAPNSServer();

    $apns = Net::APNS::Persistent->new({
        sandbox => $sandbox,
        cert    => $cert,
        key     => $key,
    }) or die("[-] Unable to connect to APNS server");

}

sub push {
    my $msg = $_[1];

    Logger::log(5, "[APNS Client] Got message ".Dumper($msg));

    #Encode::_utf8_off($msg);
    utf8::encode($msg);

    my $pack = decode_json($msg);
    my ($token, $payload) = @{$pack};

    Logger::log(5, "Sending push with token: $token and Data: \n".Dumper($payload));

    $apns->queue_notification(
       $token,
       $payload
       );
    $apns->send_queue;
}

所以在 push 子例程中,我使用下面给出的格式传递 JSON 数据。我的问题是表情符号 \x{2460}。你可以看到我添加了这一行

utf8::encode($msg);

解码数据之前。如果我删除这一行,我在解码 JSON 数据

时会出错
 Wide character in subroutine entry at .....

添加上面的行后,我可以解码我的 JSON 数据。但是,当我尝试写入下一行中的套接字时 ($apns->send_queue) 给出

Cannot decode string with wide characters at /usr/lib/perl/5.10/Encode.pm line 176

我该如何解决?

消息格式(JSON)

["token",
    { 
      "aps":{
          "alert":"Alert: \x{2460}",
          "content-available":1,
          "badge":2,
          "sound":"default.aiff"
       },
       "d":"Meta"
   }
]

转储器输出

[-] [ 2015-08-25T20:03:15 ] [APNS Client] Got message $VAR1 = "[\"19c360f37681035730a26cckjgkjgkj58b2d20326986f4265ee802c103f51\",{\"aps\":{\"alert\":\"Alert: \x{24bc}\",\"content-available\":1,\"badge\":2,\"sound\":\"default.aiff\"},\"d\":\"Meta\"}]";

[-] [ 2015-08-25T20:03:15 ] Sending push with token: 119c360f37681035730a26cckjgkjgkj58b2d20326986f4265ee802c103f51 and Data:
$VAR1 = {
          'aps' => {
                     'alert' => "Alert: \x{24bc}",
                     'content-available' => 1,
                     'badge' => 2,
                     'sound' => 'default.aiff'
                   },
          'd' => 'Meta'
        };

[x] [ 2015-08-25T20:03:15 ] [APNS Client] Error writing to socket. Reconnecting : Cannot decode string with wide characters at /usr/lib/perl/5.10/Encode.pm line 176.

在发送警报之前,您可能必须在 $payload 中对警报进行 UTF-8 编码。您还可以使用 from_json 而不是 decode_json 来避免第一个编码步骤:

sub push {
    my $msg = $_[1];

    Logger::log(5, "[APNS Client] Got message ".Dumper($msg));

    my $pack = from_json($msg);
    my ($token, $payload) = @{$pack};

    Logger::log(5, "Sending push with token: $token and Data: \n".Dumper($payload));

    # UTF-8 encode before sending.
    utf8::encode($payload->{aps}{alert});

    $apns->queue_notification(
       $token,
       $payload
       );
    $apns->send_queue;
}

首先,decode_json 期望 JSON 使用 UTF-8 编码,因此如果您从 "decoded" JSON 开始,编码它是正确的和你一样。

utf8::encode( my $json_utf8 = $json_uni );
my $data = decode_json($json_utf8);

但是,使用 from_json 会更简单。

my $data = from_json($json_uni);

现在回答你的问题。写 Net::APNS::Persistent 的人把时间搞砸了。我查看了源代码,他们希望使用 UTF-8 对警报消息进行编码。添加以下内容将使您的结构符合模块的奇怪期望:

utf8::encode(
   ref($payload->{aps}{alert}) eq 'HASH'
      ? $payload->{aps}{alert}{body}
      : $payload->{aps}{alert}
);

如果您 运行 关注其他问题,我不会感到惊讶。值得注意的是,这些模块使用了 bytes 模块,这肯定表明某些操作不正确。