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package Protocol::HTTP2::Upgrade; |
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11
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11
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53
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use strict; |
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20
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11
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277
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use warnings; |
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277
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5030
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use Protocol::HTTP2; |
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26
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11
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331
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5
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use Protocol::HTTP2::Constants qw(:frame_types :errors :states); |
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20
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11
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2892
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6
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use Protocol::HTTP2::Trace qw(tracer); |
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19
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11
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482
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7
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11
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8318
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use MIME::Base64 qw(encode_base64url decode_base64url); |
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8617
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11
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11045
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8
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#use re 'debug'; |
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my $end_headers_re = qr/\G.+?\x0d?\x0a\x0d?\x0a/s; |
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my $header_re = qr/\G[ \t]*(.+?)[ \t]*\:[ \t]*(.+?)[ \t]*\x0d?\x0a/; |
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13
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sub upgrade_request { |
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1
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1
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0
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my ( $con, %h ) = @_; |
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my $request = sprintf "%s %s HTTP/1.1\x0d\x0aHost: %s\x0d\x0a", |
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$h{':method'}, $h{':path'}, |
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1
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$h{':authority'}; |
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1
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while ( my ( $h, $v ) = splice( @{ $h{headers} }, 0, 2 ) ) { |
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47
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19
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2
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50
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next if grep { lc($h) eq $_ } (qw(connection upgrade http2-settings)); |
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55
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2
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$request .= $h . ': ' . $v . "\x0d\x0a"; |
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} |
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1
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$request .= join "\x0d\x0a", |
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'Connection: Upgrade, HTTP2-Settings', |
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'Upgrade: ' . Protocol::HTTP2::ident_plain, |
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'HTTP2-Settings: ' |
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. encode_base64url( $con->frame_encode( SETTINGS, 0, 0, {} ) ), |
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'', ''; |
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} |
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sub upgrade_response { |
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0
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0
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0
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0
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join "\x0d\x0a", |
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"HTTP/1.1 101 Switching Protocols", |
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"Connection: Upgrade", |
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"Upgrade: " . Protocol::HTTP2::ident_plain, |
36
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"", ""; |
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38
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} |
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40
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sub decode_upgrade_request { |
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1
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1
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0
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my ( $con, $buf_ref, $buf_offset, $headers_ref ) = @_; |
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1
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4
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pos($$buf_ref) = $buf_offset; |
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45
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# Search end of headers |
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1
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50
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return 0 if $$buf_ref !~ /$end_headers_re/g; |
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1
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3
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my $end_headers_pos = pos($$buf_ref) - $buf_offset; |
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1
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3
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pos($$buf_ref) = $buf_offset; |
50
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51
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# Request |
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1
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50
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8
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return undef if $$buf_ref !~ m#\G(\w+) ([^ ]+) HTTP/1\.1\x0d?\x0a#g; |
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1
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4
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my ( $method, $uri ) = ( $1, $2 ); |
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55
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# TODO: remove after http2 -> http/1.1 headers conversion implemented |
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1
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3
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push @$headers_ref, ":method", $method; |
57
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1
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2
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push @$headers_ref, ":path", $uri; |
58
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1
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3
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push @$headers_ref, ":scheme", 'http'; |
59
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60
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1
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4
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my $success = 0; |
61
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62
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# Parse headers |
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1
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66
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14
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while ( $success != 0b111 && $$buf_ref =~ /$header_re/gc ) { |
64
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4
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13
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my ( $header, $value ) = ( lc($1), $2 ); |
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66
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4
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100
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66
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29
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if ( $header eq "connection" ) { |
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100
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66
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100
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67
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1
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7
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my %h = map { $_ => 1 } split /\s*,\s*/, lc($value); |
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2
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7
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68
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$success |= 0b001 |
69
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1
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50
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33
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16
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if exists $h{'upgrade'} && exists $h{'http2-settings'}; |
70
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} |
71
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elsif ( |
72
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1
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4
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$header eq "upgrade" && grep { $_ eq Protocol::HTTP2::ident_plain } |
73
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split /\s*,\s*/, |
74
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$value |
75
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) |
76
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{ |
77
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1
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12
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$success |= 0b010; |
78
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} |
79
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elsif ( $header eq "http2-settings" |
80
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&& defined $con->frame_decode( \decode_base64url($value), 0 ) ) |
81
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{ |
82
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1
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4
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$success |= 0b100; |
83
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} |
84
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else { |
85
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1
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15
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push @$headers_ref, $header, $value; |
86
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} |
87
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} |
88
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89
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1
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50
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4
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return undef unless $success == 0b111; |
90
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91
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# TODO: method POST also can contain data... |
92
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93
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1
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7
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return $end_headers_pos; |
94
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95
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} |
96
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97
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sub decode_upgrade_response { |
98
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5
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5
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0
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33
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my ( $con, $buf_ref, $buf_offset ) = @_; |
99
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100
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5
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22
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pos($$buf_ref) = $buf_offset; |
101
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102
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# Search end of headers |
103
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5
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100
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108
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return 0 if $$buf_ref !~ /$end_headers_re/g; |
104
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4
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17
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my $end_headers_pos = pos($$buf_ref) - $buf_offset; |
105
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106
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4
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15
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pos($$buf_ref) = $buf_offset; |
107
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108
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# Switch Protocols failed |
109
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4
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100
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31
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return undef if $$buf_ref !~ m#\GHTTP/1\.1 101 .+?\x0d?\x0a#g; |
110
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111
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2
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5
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my $success = 0; |
112
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113
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# Parse headers |
114
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2
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100
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25
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while ( $success != 0b11 && $$buf_ref =~ /$header_re/gc ) { |
115
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6
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17
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my ( $header, $value ) = ( lc($1), $2 ); |
116
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117
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6
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100
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66
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53
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if ( $header eq "connection" && lc($value) eq "upgrade" ) { |
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100
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100
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118
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2
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23
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$success |= 0b01; |
119
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} |
120
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elsif ( $header eq "upgrade" && $value eq Protocol::HTTP2::ident_plain ) |
121
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{ |
122
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1
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4
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$success |= 0b10; |
123
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} |
124
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} |
125
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126
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2
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100
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10
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return undef unless $success == 0b11; |
127
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128
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1
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5
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return $end_headers_pos; |
129
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} |
130
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131
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1; |