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-rw-r--r--lib/Net/IMAP/InterIMAP.pm107
1 files changed, 82 insertions, 25 deletions
diff --git a/lib/Net/IMAP/InterIMAP.pm b/lib/Net/IMAP/InterIMAP.pm
index 1a71f59..fff1570 100644
--- a/lib/Net/IMAP/InterIMAP.pm
+++ b/lib/Net/IMAP/InterIMAP.pm
@@ -24,7 +24,7 @@ use strict;
use Compress::Raw::Zlib qw/Z_OK Z_STREAM_END Z_FULL_FLUSH Z_SYNC_FLUSH MAX_WBITS/;
use Config::Tiny ();
use Errno qw/EEXIST EINTR/;
-use Net::SSLeay 1.73 ();
+use Net::SSLeay 1.83 ();
use List::Util qw/all first/;
use POSIX ':signal_h';
use Socket qw/SOCK_STREAM SOCK_RAW SOCK_CLOEXEC IPPROTO_TCP SHUT_RDWR
@@ -65,6 +65,7 @@ my %OPTIONS = (
SSL_protocols => qr/\A(!?$RE_SSL_PROTO(?: !?$RE_SSL_PROTO)*)\z/,
SSL_fingerprint => qr/\A((?:[A-Za-z0-9]+\$)?\p{AHex}+(?: (?:[A-Za-z0-9]+\$)?\p{AHex}+)*)\z/,
SSL_cipherlist => qr/\A(\P{Control}+)\z/,
+ SSL_hostname => qr/\A(\P{Control}*)\z/,
SSL_verify => qr/\A(YES|NO)\z/i,
SSL_CApath => qr/\A(\P{Control}+)\z/,
SSL_CAfile => qr/\A(\P{Control}+)\z/,
@@ -1446,23 +1447,39 @@ my $RE_IPv6 = do {
| (?: (?: $h16 : ){0,6} $h16 )? ::
/x };
+# Parse an IPv4 or IPv6. In list context, return a pair (IP, family),
+# otherwise only the IP. If the argument is not an IP (for instance if
+# it's a hostname), then return (undef, undef) resp. undef. The input
+# can optionaly be enclosed in square brackets which forces its
+# interpretation as an IP literal: an error is raised if it is not the
+# case.
+my $RE_IPv4_anchored = qr/\A($RE_IPv4)\z/;
+my $RE_IPv6_anchored = qr/\A($RE_IPv6)\z/;
+sub _parse_hostip($) {
+ my $v = shift // return;
+ my $literal = $v =~ s/\A\[(.*)\]\z/$1/ ? 1 : 0;
+ my ($ip, $af) = $v =~ $RE_IPv4_anchored ? ($1, AF_INET)
+ : $v =~ $RE_IPv6_anchored ? ($1, AF_INET6)
+ : (undef, undef);
+ die "Invalid IP literal: $v\n" if $literal and !defined($ip);
+ return wantarray ? ($ip, $af) : $ip;
+}
# Opens a TCP socket to the given $host and $port.
sub _tcp_connect($$$) {
my ($self, $host, $port) = @_;
my %hints = (socktype => SOCK_STREAM, protocol => IPPROTO_TCP);
- if ($host =~ qr/\A$RE_IPv4\z/) {
- $hints{family} = AF_INET;
- $hints{flags} |= AI_NUMERICHOST;
- } elsif ($host =~ qr/\A\[($RE_IPv6)\]\z/) {
- $host = $1;
- $hints{family} = AF_INET6;
+ my ($host2, $family) = _parse_hostip($host);
+ if (defined $family) {
+ $hints{family} = $family;
$hints{flags} |= AI_NUMERICHOST;
+ } else {
+ $host2 = $host;
}
- my ($err, @res) = getaddrinfo($host, $port, \%hints);
- $self->fail("Can't getaddrinfo: $err") if $err ne '';
+ my ($err, @res) = getaddrinfo($host2, $port, \%hints);
+ $self->fail("getaddrinfo($host2): $err") if $err ne '';
SOCKETS:
foreach my $ai (@res) {
@@ -1520,7 +1537,7 @@ sub _proxify($$$$) {
$port = getservbyname($port, 'tcp') // $self->fail("Can't getservbyname $port")
unless $port =~ /\A[0-9]+\z/;
- $proxy =~ /\A([A-Za-z0-9]+):\/\/(\P{Control}*\@)?($RE_IPv4|\[$RE_IPv6\]|[^:]+)(:[A-Za-z0-9]+)?\z/
+ $proxy =~ /\A([A-Za-z0-9]+):\/\/(\P{Control}*\@)?([^:]+|\[[^\]]+\])(:[A-Za-z0-9]+)?\z/
or $self->fail("Invalid proxy URI $proxy");
my ($proto, $userpass, $proxyhost, $proxyport) = ($1, $2, $3, $4);
$userpass =~ s/\@\z// if defined $userpass;
@@ -1553,23 +1570,30 @@ sub _proxify($$$$) {
$self->fail('SOCKSv5', 'No acceptable authentication methods');
}
- if ($host !~ /\A(?:$RE_IPv4|\[$RE_IPv6\])\z/ and !$resolv) {
+ my ($hostip, $fam) = _parse_hostip($host);
+ unless (defined($fam) or $resolv) {
# resove the hostname $host locally
my ($err, @res) = getaddrinfo($host, undef, {socktype => SOCK_RAW});
- $self->fail("Can't getaddrinfo: $err") if $err ne '';
- ($host) = first { defined $_ } map {
+ $self->fail("getaddrinfo($host): $err") if $err ne '';
+ my ($addr) = first { defined($_) } map {
my ($err, $ipaddr) = getnameinfo($_->{addr}, NI_NUMERICHOST, NIx_NOSERV);
- $err eq '' ? $ipaddr : undef
+ $err eq '' ? [$ipaddr,$_->{family}] : undef
} @res;
- $self->fail("Can't getnameinfo") unless defined $host;
+ $self->fail("Can't getnameinfo") unless defined $addr;
+ ($hostip, $fam) = @$addr;
}
# send a CONNECT command (CMD 0x01)
- my ($typ, $addr) =
- $host =~ /\A$RE_IPv4\z/ ? (0x01, Socket::inet_pton(AF_INET, $host))
- : ($host =~ /\A\[($RE_IPv6)\]\z/ or $host =~ /\A($RE_IPv6)\z/) ? (0x04, Socket::inet_pton(AF_INET6, $1))
- : (0x03, pack('C',length($host)).$host);
- $self->_xwrite($socket, pack('C4', $v, 0x01, 0x00, $typ).$addr.pack('n', $port));
+ my ($typ, $addr);
+ if (defined $fam) {
+ $typ = $fam == AF_INET ? 0x01 : $fam == AF_INET6 ? 0x04 : $self->panic();
+ $addr = Socket::inet_pton($fam, $hostip);
+ } else {
+ # let the SOCKS server do the resolution
+ $typ = 0x03;
+ $addr = pack('C',length($host)) . $host;
+ }
+ $self->_xwrite($socket, pack('C4', $v, 0x01, 0x00, $typ) . $addr . pack('n', $port));
($v2, my $r, my $rsv, $typ) = unpack('C4', $self->_xread($socket, 4));
$self->fail('SOCKSv5', 'Invalid protocol') unless $v == $v2 and $rsv == 0x00;
@@ -1593,7 +1617,7 @@ sub _proxify($$$$) {
return $socket;
}
else {
- $self->error("Unsupported proxy protocol $proto");
+ $self->fail("Unsupported proxy protocol $proto");
}
}
@@ -1635,6 +1659,7 @@ sub _ssl_verify($$$) {
my $pkey = Net::SSLeay::X509_get_X509_PUBKEY($cert);
if (defined $pkey and Net::SSLeay::EVP_Digest($pkey, $type) eq $digest) {
+ $self->log('Peer certificate matches pinned SPKI digest ', $algo .'$'. $fpr) if $self->{debug};
$rv = 1;
last;
}
@@ -1667,6 +1692,7 @@ BEGIN {
# Upgrade the $socket to SSL/TLS.
sub _start_ssl($$) {
my ($self, $socket) = @_;
+ my $openssl_version = Net::SSLeay::OPENSSL_VERSION_NUMBER();
my $ctx = Net::SSLeay::CTX_new() or $self->panic("Failed to create SSL_CTX $!");
my $ssl_options = Net::SSLeay::OP_SINGLE_DH_USE() | Net::SSLeay::OP_SINGLE_ECDH_USE();
@@ -1709,25 +1735,56 @@ sub _start_ssl($$) {
or $self->_ssl_error("Can't set cipher list");
}
+ my $vpm = Net::SSLeay::X509_VERIFY_PARAM_new() or $self->_ssl_error("X509_VERIFY_PARAM_new()");
+ my $purpose = Net::SSLeay::X509_PURPOSE_SSL_SERVER();
+ $self->_ssl_error("X509_VERIFY_PARAM_set_purpose()") unless Net::SSLeay::X509_VERIFY_PARAM_set_purpose($vpm, $purpose) == 1;
+ $self->_ssl_error("CTX_set_purpose()") unless Net::SSLeay::CTX_set_purpose($ctx, $purpose) == 1;
+
+ my $host = $self->{host} // $self->panic();
+ my ($hostip, $hostipfam) = _parse_hostip($host);
if ($self->{SSL_verify} // 1) {
- # verify the certificate chain
+ # for X509_VERIFY_PARAM_set1_{ip,host}()
+ $self->panic("Failed requirement libssl >=1.0.2") if $openssl_version < 0x1000200f;
+
+ # verify certificate chain
my ($file, $path) = ($self->{SSL_CAfile} // '', $self->{SSL_CApath} // '');
if ($file ne '' or $path ne '') {
Net::SSLeay::CTX_load_verify_locations($ctx, $file, $path)
or $self->_ssl_error("Can't load verify locations");
}
+
+ # verify DNS hostname or IP literal
+ if (defined $hostipfam) {
+ my $addr = Socket::inet_pton($hostipfam, $hostip) // $self->panic();
+ $self->_ssl_error("X509_VERIFY_PARAM_set1_ip()")
+ unless Net::SSLeay::X509_VERIFY_PARAM_set1_ip($vpm, $addr) == 1;
+ } else {
+ $self->_ssl_error("X509_VERIFY_PARAM_set1_host()")
+ unless Net::SSLeay::X509_VERIFY_PARAM_set1_host($vpm, $host) == 1;
+ }
}
else {
Net::SSLeay::CTX_set_verify_depth($ctx, 0);
}
- Net::SSLeay::CTX_set_purpose($ctx, Net::SSLeay::X509_PURPOSE_SSL_SERVER())
- or $self->_ssl_error("Can't set purpose");
Net::SSLeay::CTX_set_verify($ctx, Net::SSLeay::VERIFY_PEER(), sub($$) {$self->_ssl_verify(@_)});
+ $self->_ssl_error("CTX_SSL_set1_param()") unless Net::SSLeay::CTX_set1_param($ctx, $vpm) == 1;
my $ssl = Net::SSLeay::new($ctx) or $self->fail("Can't create new SSL structure");
Net::SSLeay::set_fd($ssl, fileno $socket) or $self->fail("SSL filehandle association failed");
+
+ # always use 'SSL_hostname' when set, otherwise use 'host' (unless it's an IP) on OpenSSL >=0.9.8f
+ my $servername = $self->{SSL_hostname} // (defined $hostipfam ? "" : $host);
+ if ($servername ne "") {
+ $self->panic("Failed requirement libssl >=0.9.8f") if $openssl_version < 0x00908070;
+ $self->_ssl_error("Can't set TLS servername extension (value $servername)")
+ unless Net::SSLeay::set_tlsext_host_name($ssl, $servername) == 1;
+ $self->log("Using SNI with name $servername") if $self->{debug};
+ }
+
$self->_ssl_error("Can't initiate TLS/SSL handshake") unless Net::SSLeay::connect($ssl) == 1;
- $self->panic("Couldn't verify") unless $self->{_SSL_PEER_VERIFIED}; # sanity check
+ $self->panic() unless $self->{_SSL_PEER_VERIFIED}; # sanity check
+ $self->panic() if ($self->{SSL_verify} // 1) and Net::SSLeay::get_verify_result($ssl) != Net::SSLeay::X509_V_OK();
+ Net::SSLeay::X509_VERIFY_PARAM_free($vpm);
if ($self->{debug}) {
my $v = Net::SSLeay::version($ssl);
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-04 15:03:09 +0000