Comments (8)
tokuhirom
commented on May 20, 2024
Can you send me a data file to reproduce?
from msgpack-perl.
alexander-potemkin
commented on May 20, 2024
Sure, please, find it here: https://github.com/battleship-potemkin/test/blob/master/dump.cant_parse
Here is the command to reproduce:
perl test.pl dump.cant_parse
Please, let me know if any additional information required.
from msgpack-perl.
syohex
commented on May 20, 2024
Is dump.cant_parse valid ?
% od -t x1 dump.cant_parse
0000000 87 a7 6f 73 5f 6e 61 6d 65 a5 4c 69 6e 75 78 aa
0000020 6f 73 5f 72 65 6c 65 61 73 65 ae 32 2e 36 2e 33
0000040 32 2d 33 34 31 2d 65 63 32 a9 68 6f 73 74 5f 6e
0000060 61 6d 65 ba 70 68 69 6c 6f 73 6f 70 68 65 72 2e
....
First data type is 0x87, this is fix map and it has 7 key & value pairs.
So Data::MessagePack unpack 7 keys and 7 values then it stops unpacking
and dies, because there are still not unpacking data remaining.
I think this behavior is not wrong.
You should use 'map 32' or 'map 16' for unpacking dump.cant_parse correctly.
from msgpack-perl.
alexander-potemkin
commented on May 20, 2024
I guess it should, first of all, because Python's bindings unpack it very well.
Regarding the elements - yes, we have (were packing) 7 keys and values there.
from msgpack-perl.
syohex
commented on May 20, 2024
dump.cant_parse has multiple data structures.
They are following
Chunk from 0 to 145
{
'host_address' => '10.128.101.100',
'os_arch' => 'x86_64',
'lib_arch' => '64',
'os_name' => 'Linux',
'uptime' => 20396890,
'host_name' => 'philosopher.zoo.10bees.com',
'os_release' => '2.6.32-341-ec2'
}
Chunk from 145 to 236
{
'buffers' => 180372,
'swap_total' => 0,
'total' => 650456,
'swap_used' => 0,
'free' => 75108,
'swap_free' => 0,
'used' => 575348,
'cached' => 254320
}
Chunk from 236 to 288
{
'system' => 0,
'idle' => 100,
'nice' => 0,
'irq' => 0,
'sintr' => 0,
'steal' => 0,
'wait' => 0,
'user' => 0
}
Chunk from 288 to 1917
{
'cpudevours' => [
{
'uid' => 0,
'pid' => 19349,
'ppid' => 11884,
'cpu_usage' => 1,
'cmdline' => './proc_sysinfo-linux-x86_64',
'mem_usage' => 932,
'username' => 'root'
},
{
'uid' => 0,
'pid' => 1,
'ppid' => 0,
'cpu_usage' => 0,
'cmdline' => '/sbin/init',
'mem_usage' => 1520,
'username' => 'root'
},
{
'uid' => 0,
'pid' => 2,
'ppid' => 0,
'cpu_usage' => 0,
'cmdline' => 'kthreadd',
'mem_usage' => 0,
'username' => 'root'
},
{
'uid' => 0,
'pid' => 3,
'ppid' => 2,
'cpu_usage' => 0,
'cmdline' => 'migration/0',
'mem_usage' => 0,
'username' => 'root'
},
{
'uid' => 0,
'pid' => 4,
'ppid' => 2,
'cpu_usage' => 0,
'cmdline' => 'ksoftirqd/0',
'mem_usage' => 0,
'username' => 'root'
},
{
'uid' => 0,
'pid' => 5,
'ppid' => 2,
'cpu_usage' => 0,
'cmdline' => 'watchdog/0',
'mem_usage' => 0,
'username' => 'root'
},
{
'uid' => 0,
'pid' => 6,
'ppid' => 2,
'cpu_usage' => 0,
'cmdline' => 'events/0',
'mem_usage' => 0,
'username' => 'root'
},
{
'uid' => 0,
'pid' => 7,
'ppid' => 2,
'cpu_usage' => 0,
'cmdline' => 'cpuset',
'mem_usage' => 0,
'username' => 'root'
},
{
'uid' => 0,
'pid' => 8,
'ppid' => 2,
'cpu_usage' => 0,
'cmdline' => 'khelper',
'mem_usage' => 0,
'username' => 'root'
},
{
'uid' => 0,
'pid' => 9,
'ppid' => 2,
'cpu_usage' => 0,
'cmdline' => 'netns',
'mem_usage' => 0,
'username' => 'root'
}
],
'stopped' => 0,
'zombies' => 0,
'sleeping' => 66,
'memdevours' => [
{
'uid' => 101,
'pid' => 408,
'ppid' => 1,
'cpu_usage' => 0,
'cmdline' => 'rsyslogd',
'mem_usage' => 1260,
'username' => 'syslog'
},
{
'uid' => 1001,
'pid' => 11758,
'ppid' => 11689,
'cpu_usage' => 0,
'cmdline' => 'sshd: alexander@pts/0',
'mem_usage' => 1876,
'username' => 'alexander'
},
{
'uid' => 0,
'pid' => 11689,
'ppid' => 401,
'cpu_usage' => 0,
'cmdline' => 'sshd: alexander [priv]',
'mem_usage' => 3432,
'username' => 'root'
},
{
'uid' => 1006,
'pid' => 24114,
'ppid' => 1,
'cpu_usage' => 0,
'cmdline' => '10bees-agent',
'mem_usage' => 10544,
'username' => '10bees'
},
{
'uid' => 0,
'pid' => 532,
'ppid' => 1,
'cpu_usage' => 0,
'cmdline' => '/usr/sbin/console-kit-daemon',
'mem_usage' => 3924,
'username' => 'root'
},
{
'uid' => 0,
'pid' => 401,
'ppid' => 1,
'cpu_usage' => 0,
'cmdline' => '/usr/sbin/sshd',
'mem_usage' => 1660,
'username' => 'root'
},
{
'uid' => 0,
'pid' => 11877,
'ppid' => 11759,
'cpu_usage' => 0,
'cmdline' => 'su',
'mem_usage' => 1784,
'username' => 'root'
},
{
'uid' => 107,
'pid' => 27770,
'ppid' => 27767,
'cpu_usage' => 0,
'cmdline' => 'qmgr',
'mem_usage' => 2384,
'username' => 'postfix'
},
{
'uid' => 107,
'pid' => 18667,
'ppid' => 27767,
'cpu_usage' => 0,
'cmdline' => 'pickup',
'mem_usage' => 2200,
'username' => 'postfix'
},
{
'uid' => 0,
'pid' => 27767,
'ppid' => 1,
'cpu_usage' => 0,
'cmdline' => '/usr/lib/postfix/master',
'mem_usage' => 2292,
'username' => 'root'
}
],
'running' => 1,
'total' => 67
}
Chunk from 1917 to 2004
{
'mounts' => [
{
'bsize' => 4096,
'bfree' => 5284724,
'filesystem' => '/dev/sda1',
'mounted_on' => '/',
'bused' => 2972228,
'btotal' => 8256952
}
]
}
Chunk from 2004 to 4414
{
'nics' => [
{
'recv' => 3059957,
'name' => 'eth0',
'sent' => 4838496,
'ipv6_addr_count' => 1,
'ipv4_addr_count' => 1,
'ipv4_addrs' => [
'10.128.101.100'
],
'ipv6_addrs' => [
'fe80::1031:40ff:fe00:669a'
]
},
{
'recv' => 0,
'name' => 'dummy0',
'sent' => 0,
'ipv6_addr_count' => 0,
'ipv4_addr_count' => 1,
'ipv4_addrs' => [
'0.0.0.0'
],
'ipv6_addrs' => []
},
{
'recv' => 0,
'name' => 'ifb0',
'sent' => 0,
'ipv6_addr_count' => 0,
'ipv4_addr_count' => 1,
'ipv4_addrs' => [
'0.0.0.0'
],
'ipv6_addrs' => []
},
{
'recv' => 0,
'name' => 'ifb1',
'sent' => 0,
'ipv6_addr_count' => 0,
'ipv4_addr_count' => 1,
'ipv4_addrs' => [
'0.0.0.0'
],
'ipv6_addrs' => []
}
]
}
Data::MessagePack::unpack can unpack 1 data structure,
So Data::MessagePack::unpack unpacks only first data(7 element map)
and finish unpacking and dies(because there are still not unpacking data remaining).
You should use Data::MessagePack::Stream such case.
Sample code is following
use strict;
use warnings;
use Data::MessagePack::Stream;
use Data::Dumper;
my $dump_file_name = shift or die "Usage: $0 message_packed_file";
my $dump_content = do {
local $/;
open my $fh, "<", $dump_file_name or die "Can't open $dump_file_name: $!";
<$fh>;
};
my $unpacker = Data::MessagePack::Stream->new;
$unpacker->feed($dump_content);
local $Data::Dumper::Terse = 1;
while ($unpacker->next) {
print Dumper($unpacker->data);
}And I get following output same as above
% perl stream.pl dump.cant_parse
{
'host_address' => '10.128.101.100',
'os_arch' => 'x86_64',
'lib_arch' => '64',
'os_name' => 'Linux',
'uptime' => 20396890,
'host_name' => 'philosopher.zoo.10bees.com',
'os_release' => '2.6.32-341-ec2'
}
{
'buffers' => 180372,
'swap_total' => 0,
'total' => 650456,
'swap_used' => 0,
'free' => 75108,
'swap_free' => 0,
'used' => 575348,
'cached' => 254320
}
{
'system' => 0,
'idle' => 100,
'nice' => 0,
'irq' => 0,
'sintr' => 0,
'steal' => 0,
'wait' => 0,
'user' => 0
}
{
'cpudevours' => [
{
'uid' => 0,
'pid' => 19349,
'ppid' => 11884,
'cpu_usage' => 1,
'cmdline' => './proc_sysinfo-linux-x86_64',
'mem_usage' => 932,
'username' => 'root'
},
{
'uid' => 0,
'pid' => 1,
'ppid' => 0,
'cpu_usage' => 0,
'cmdline' => '/sbin/init',
'mem_usage' => 1520,
'username' => 'root'
},
{
'uid' => 0,
'pid' => 2,
'ppid' => 0,
'cpu_usage' => 0,
'cmdline' => 'kthreadd',
'mem_usage' => 0,
'username' => 'root'
},
{
'uid' => 0,
'pid' => 3,
'ppid' => 2,
'cpu_usage' => 0,
'cmdline' => 'migration/0',
'mem_usage' => 0,
'username' => 'root'
},
{
'uid' => 0,
'pid' => 4,
'ppid' => 2,
'cpu_usage' => 0,
'cmdline' => 'ksoftirqd/0',
'mem_usage' => 0,
'username' => 'root'
},
{
'uid' => 0,
'pid' => 5,
'ppid' => 2,
'cpu_usage' => 0,
'cmdline' => 'watchdog/0',
'mem_usage' => 0,
'username' => 'root'
},
{
'uid' => 0,
'pid' => 6,
'ppid' => 2,
'cpu_usage' => 0,
'cmdline' => 'events/0',
'mem_usage' => 0,
'username' => 'root'
},
{
'uid' => 0,
'pid' => 7,
'ppid' => 2,
'cpu_usage' => 0,
'cmdline' => 'cpuset',
'mem_usage' => 0,
'username' => 'root'
},
{
'uid' => 0,
'pid' => 8,
'ppid' => 2,
'cpu_usage' => 0,
'cmdline' => 'khelper',
'mem_usage' => 0,
'username' => 'root'
},
{
'uid' => 0,
'pid' => 9,
'ppid' => 2,
'cpu_usage' => 0,
'cmdline' => 'netns',
'mem_usage' => 0,
'username' => 'root'
}
],
'stopped' => 0,
'zombies' => 0,
'sleeping' => 66,
'memdevours' => [
{
'uid' => 101,
'pid' => 408,
'ppid' => 1,
'cpu_usage' => 0,
'cmdline' => 'rsyslogd',
'mem_usage' => 1260,
'username' => 'syslog'
},
{
'uid' => 1001,
'pid' => 11758,
'ppid' => 11689,
'cpu_usage' => 0,
'cmdline' => 'sshd: alexander@pts/0',
'mem_usage' => 1876,
'username' => 'alexander'
},
{
'uid' => 0,
'pid' => 11689,
'ppid' => 401,
'cpu_usage' => 0,
'cmdline' => 'sshd: alexander [priv]',
'mem_usage' => 3432,
'username' => 'root'
},
{
'uid' => 1006,
'pid' => 24114,
'ppid' => 1,
'cpu_usage' => 0,
'cmdline' => '10bees-agent',
'mem_usage' => 10544,
'username' => '10bees'
},
{
'uid' => 0,
'pid' => 532,
'ppid' => 1,
'cpu_usage' => 0,
'cmdline' => '/usr/sbin/console-kit-daemon',
'mem_usage' => 3924,
'username' => 'root'
},
{
'uid' => 0,
'pid' => 401,
'ppid' => 1,
'cpu_usage' => 0,
'cmdline' => '/usr/sbin/sshd',
'mem_usage' => 1660,
'username' => 'root'
},
{
'uid' => 0,
'pid' => 11877,
'ppid' => 11759,
'cpu_usage' => 0,
'cmdline' => 'su',
'mem_usage' => 1784,
'username' => 'root'
},
{
'uid' => 107,
'pid' => 27770,
'ppid' => 27767,
'cpu_usage' => 0,
'cmdline' => 'qmgr',
'mem_usage' => 2384,
'username' => 'postfix'
},
{
'uid' => 107,
'pid' => 18667,
'ppid' => 27767,
'cpu_usage' => 0,
'cmdline' => 'pickup',
'mem_usage' => 2200,
'username' => 'postfix'
},
{
'uid' => 0,
'pid' => 27767,
'ppid' => 1,
'cpu_usage' => 0,
'cmdline' => '/usr/lib/postfix/master',
'mem_usage' => 2292,
'username' => 'root'
}
],
'running' => 1,
'total' => 67
}
{
'mounts' => [
{
'bsize' => 4096,
'bfree' => 5284724,
'filesystem' => '/dev/sda1',
'mounted_on' => '/',
'bused' => 2972228,
'btotal' => 8256952
}
]
}
{
'nics' => [
{
'recv' => 3059957,
'name' => 'eth0',
'sent' => 4838496,
'ipv6_addr_count' => 1,
'ipv4_addr_count' => 1,
'ipv4_addrs' => [
'10.128.101.100'
],
'ipv6_addrs' => [
'fe80::1031:40ff:fe00:669a'
]
},
{
'recv' => 0,
'name' => 'dummy0',
'sent' => 0,
'ipv6_addr_count' => 0,
'ipv4_addr_count' => 1,
'ipv4_addrs' => [
'0.0.0.0'
],
'ipv6_addrs' => []
},
{
'recv' => 0,
'name' => 'ifb0',
'sent' => 0,
'ipv6_addr_count' => 0,
'ipv4_addr_count' => 1,
'ipv4_addrs' => [
'0.0.0.0'
],
'ipv6_addrs' => []
},
{
'recv' => 0,
'name' => 'ifb1',
'sent' => 0,
'ipv6_addr_count' => 0,
'ipv4_addr_count' => 1,
'ipv4_addrs' => [
'0.0.0.0'
],
'ipv6_addrs' => []
}
]
}
from msgpack-perl.
alexander-potemkin
commented on May 20, 2024
Thanks. Any way for the streams to be unpacked by using Pure Perl solution? Or, at least, to verify the structure without using C library?
from msgpack-perl.
syohex
commented on May 20, 2024
You can use Data::MessagePack::PP::Unpacker(Pure perl implementation of Data::MessagePack::Unpacker).
But author says "Data::MessagePack::Unpacker is deprecated, use Data::MessagePack::Stream instead".
Sample code is following.
use strict;
use warnings;
use Data::MessagePack;
use Data::Dumper;
my $dump_file_name = shift or die "Usage: $0 message_packed_file";
my $dump_content = do {
local $/;
open my $fh, "<", $dump_file_name or die "Can't open $dump_file_name: $!";
<$fh>;
};
local $Data::Dumper::Terse = 1;
my $unpacker = Data::MessagePack::Unpacker->new;
my $limit = length $dump_content;
my $off = 0;
while (1) {
$off = $unpacker->execute($dump_content, $off);
print Dumper($unpacker->data);
$unpacker->reset;
last if $off >= $limit;
}output is
% PERL_ONLY=1 perl pp_stream.pl dump.cant_parse
{
'host_address' => '10.128.101.100',
'os_arch' => 'x86_64',
'lib_arch' => '64',
'os_name' => 'Linux',
'uptime' => 20396890,
'host_name' => 'philosopher.zoo.10bees.com',
'os_release' => '2.6.32-341-ec2'
}
{
'buffers' => 180372,
'swap_total' => 0,
'total' => 650456,
'swap_used' => 0,
'free' => 75108,
'swap_free' => 0,
'used' => 575348,
'cached' => 254320
}
{
'system' => 0,
'idle' => 100,
'nice' => 0,
'irq' => 0,
'sintr' => 0,
'steal' => 0,
'wait' => 0,
'user' => 0
}
{
'cpudevours' => [
{
'uid' => 0,
'pid' => 19349,
'ppid' => 11884,
'cpu_usage' => 1,
'cmdline' => './proc_sysinfo-linux-x86_64',
'mem_usage' => 932,
'username' => 'root'
},
{
'uid' => 0,
'pid' => 1,
'ppid' => 0,
'cpu_usage' => 0,
'cmdline' => '/sbin/init',
'mem_usage' => 1520,
'username' => 'root'
},
{
'uid' => 0,
'pid' => 2,
'ppid' => 0,
'cpu_usage' => 0,
'cmdline' => 'kthreadd',
'mem_usage' => 0,
'username' => 'root'
},
{
'uid' => 0,
'pid' => 3,
'ppid' => 2,
'cpu_usage' => 0,
'cmdline' => 'migration/0',
'mem_usage' => 0,
'username' => 'root'
},
{
'uid' => 0,
'pid' => 4,
'ppid' => 2,
'cpu_usage' => 0,
'cmdline' => 'ksoftirqd/0',
'mem_usage' => 0,
'username' => 'root'
},
{
'uid' => 0,
'pid' => 5,
'ppid' => 2,
'cpu_usage' => 0,
'cmdline' => 'watchdog/0',
'mem_usage' => 0,
'username' => 'root'
},
{
'uid' => 0,
'pid' => 6,
'ppid' => 2,
'cpu_usage' => 0,
'cmdline' => 'events/0',
'mem_usage' => 0,
'username' => 'root'
},
{
'uid' => 0,
'pid' => 7,
'ppid' => 2,
'cpu_usage' => 0,
'cmdline' => 'cpuset',
'mem_usage' => 0,
'username' => 'root'
},
{
'uid' => 0,
'pid' => 8,
'ppid' => 2,
'cpu_usage' => 0,
'cmdline' => 'khelper',
'mem_usage' => 0,
'username' => 'root'
},
{
'uid' => 0,
'pid' => 9,
'ppid' => 2,
'cpu_usage' => 0,
'cmdline' => 'netns',
'mem_usage' => 0,
'username' => 'root'
}
],
'stopped' => 0,
'zombies' => 0,
'sleeping' => 66,
'memdevours' => [
{
'uid' => 101,
'pid' => 408,
'ppid' => 1,
'cpu_usage' => 0,
'cmdline' => 'rsyslogd',
'mem_usage' => 1260,
'username' => 'syslog'
},
{
'uid' => 1001,
'pid' => 11758,
'ppid' => 11689,
'cpu_usage' => 0,
'cmdline' => 'sshd: alexander@pts/0',
'mem_usage' => 1876,
'username' => 'alexander'
},
{
'uid' => 0,
'pid' => 11689,
'ppid' => 401,
'cpu_usage' => 0,
'cmdline' => 'sshd: alexander [priv]',
'mem_usage' => 3432,
'username' => 'root'
},
{
'uid' => 1006,
'pid' => 24114,
'ppid' => 1,
'cpu_usage' => 0,
'cmdline' => '10bees-agent',
'mem_usage' => 10544,
'username' => '10bees'
},
{
'uid' => 0,
'pid' => 532,
'ppid' => 1,
'cpu_usage' => 0,
'cmdline' => '/usr/sbin/console-kit-daemon',
'mem_usage' => 3924,
'username' => 'root'
},
{
'uid' => 0,
'pid' => 401,
'ppid' => 1,
'cpu_usage' => 0,
'cmdline' => '/usr/sbin/sshd',
'mem_usage' => 1660,
'username' => 'root'
},
{
'uid' => 0,
'pid' => 11877,
'ppid' => 11759,
'cpu_usage' => 0,
'cmdline' => 'su',
'mem_usage' => 1784,
'username' => 'root'
},
{
'uid' => 107,
'pid' => 27770,
'ppid' => 27767,
'cpu_usage' => 0,
'cmdline' => 'qmgr',
'mem_usage' => 2384,
'username' => 'postfix'
},
{
'uid' => 107,
'pid' => 18667,
'ppid' => 27767,
'cpu_usage' => 0,
'cmdline' => 'pickup',
'mem_usage' => 2200,
'username' => 'postfix'
},
{
'uid' => 0,
'pid' => 27767,
'ppid' => 1,
'cpu_usage' => 0,
'cmdline' => '/usr/lib/postfix/master',
'mem_usage' => 2292,
'username' => 'root'
}
],
'running' => 1,
'total' => 67
}
{
'mounts' => [
{
'bsize' => 4096,
'bfree' => 5284724,
'filesystem' => '/dev/sda1',
'mounted_on' => '/',
'bused' => 2972228,
'btotal' => 8256952
}
]
}
{
'nics' => [
{
'recv' => 3059957,
'name' => 'eth0',
'sent' => 4838496,
'ipv6_addr_count' => 1,
'ipv4_addr_count' => 1,
'ipv4_addrs' => [
'10.128.101.100'
],
'ipv6_addrs' => [
'fe80::1031:40ff:fe00:669a'
]
},
{
'recv' => 0,
'name' => 'dummy0',
'sent' => 0,
'ipv6_addr_count' => 0,
'ipv4_addr_count' => 1,
'ipv4_addrs' => [
'0.0.0.0'
],
'ipv6_addrs' => []
},
{
'recv' => 0,
'name' => 'ifb0',
'sent' => 0,
'ipv6_addr_count' => 0,
'ipv4_addr_count' => 1,
'ipv4_addrs' => [
'0.0.0.0'
],
'ipv6_addrs' => []
},
{
'recv' => 0,
'name' => 'ifb1',
'sent' => 0,
'ipv6_addr_count' => 0,
'ipv4_addr_count' => 1,
'ipv4_addrs' => [
'0.0.0.0'
],
'ipv6_addrs' => []
}
]
}
from msgpack-perl.
alexander-potemkin
commented on May 20, 2024
Lovely, it works now.
Hope the module will keep working as it's the only Pure Perl unpack implementation available.
Thanks syohex, tokuhirom for prompt reply, great help and scripts examples!
from msgpack-perl.
Related Issues (20)
- Cannot communicate with a Haskell based MsgPack RPC server HOT 5
- Invalid type 'Q' in pack at <...> HOT 9
- Minimal Perl version supported HOT 10
- failed test with perl5.19.1? HOT 6
- Use Types::Serialiser::Boolean for true/false HOT 5
- unpack with "extra bytes" HOT 2
- Problem parsing incoming data from Metasploit HOT 20
- Test failing on Mac with perl 5.22.0 HOT 10
- MessagePack working in a weird way. HOT 5
- No msgpack in alpine HOT 6
- New Str encoding broke compatibility with 0.49 decoding HOT 5
- Support IEEE 754 HOT 3
- Potential issue in casting numbers HOT 2
- Fails Makefile.PL with no '.' in @INC HOT 1
- Should prefer IV when both IV and NV are OK HOT 1
- Can't install under strawberry perl 5.30.0 HOT 3
- Hook for blessed variables HOT 1
- FAIL under -Dusequadmath HOT 1
- Deserialization Error with MessagePack JavaScript Libraries HOT 4
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from msgpack-perl.