Rev 1885 | Go to most recent revision | Details | Last modification | View Log | SVN | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 1884 | arune | 1 | use IO::Select; |
| 2 | |||
| 3 | |||
| 4 | sub atomd_connect |
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| 5 | { |
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| 6 | ($host, $port) = @_; |
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| 7 | $socket = IO::Socket::INET->new( |
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| 8 | Proto => "tcp", |
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| 9 | PeerAddr => $host, |
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| 10 | PeerPort => $port, |
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| 11 | Blocking => 1, |
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| 12 | ) |
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| 13 | or die "Error: Cannot connect to port $port at $host\n"; |
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| 14 | |||
| 15 | return $socket; |
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| 16 | } |
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| 17 | |||
| 18 | sub atomd_read_packet |
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| 19 | { |
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| 20 | ($socket) = @_; |
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| 21 | $command=""; |
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| 22 | read($socket, $command, 4); |
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| 23 | |||
| 24 | $payload_length=""; |
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| 25 | read($socket, $payload_length, 4); |
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| 26 | |||
| 27 | $payload_length = int($payload_length); |
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| 28 | $payload=""; |
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| 29 | if ($payload_length > 0) |
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| 30 | { |
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| 31 | read($socket, $payload, $payload_length); |
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| 32 | } |
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| 33 | |||
| 34 | #Pad payload length with 0s |
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| 35 | $payload_length = sprintf("%04d", $payload_length); |
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| 36 | |||
| 37 | #print "areadpacket ".$command . $payload_length . $payload."\n"; |
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| 38 | return $command . $payload_length . $payload; |
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| 39 | } |
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| 40 | |||
| 41 | sub atomd_write_packet |
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| 42 | { |
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| 43 | ($socket, $command, $payload) = @_; |
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| 44 | |||
| 45 | #Pad payload length with 0s |
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| 46 | $payload_length = sprintf("%04d", length($payload)+1); |
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| 47 | $packet = $command.$payload_length.$payload.chr(0); |
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| 48 | |||
| 49 | #print "awritepacket ".$packet."\n"; |
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| 50 | print $socket $packet; |
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| 51 | } |
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| 52 | |||
| 53 | |||
| 54 | sub atomd_data_available |
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| 55 | { |
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| 56 | ($socket) = @_; |
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| 57 | |||
| 58 | $s = IO::Select->new(); |
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| 59 | $s->add($socket); |
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| 60 | @handles = $s->can_read(0.01); |
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| 61 | |||
| 62 | $has_data = 0; |
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| 63 | if (@handles) |
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| 64 | { |
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| 65 | $has_data = 1; |
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| 66 | } |
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| 67 | |||
| 68 | return $has_data; |
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| 69 | } |
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| 70 | |||
| 71 | |||
| 72 | sub atomd_initialize |
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| 73 | { |
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| 74 | ($host, $port) = @_; |
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| 75 | $socket = atomd_connect($host, $port); |
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| 76 | |||
| 77 | while (atomd_data_available($socket)) |
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| 78 | { |
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| 79 | $packet = atomd_read_packet($socket); # Read initial prompt |
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| 80 | } |
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| 81 | |||
| 82 | return $socket; |
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| 83 | } |
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| 84 | |||
| 85 | |||
| 86 | sub atomd_send_command |
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| 87 | { |
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| 88 | ($socket, $command) = @_; |
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| 89 | atomd_write_packet($socket, "RESP", $command); |
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| 90 | } |
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| 91 | |||
| 92 | |||
| 93 | sub atomd_read_command_response |
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| 94 | { |
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| 95 | ($socket) = @_; |
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| 96 | |||
| 97 | $response = ""; |
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| 98 | |||
| 99 | while (1) |
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| 100 | { |
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| 101 | $packet = atomd_read_packet($socket); |
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| 102 | |||
| 103 | if (substr($packet, 0, 4) ne "TEXT") |
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| 104 | { |
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| 105 | last; |
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| 106 | } |
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| 107 | |||
| 108 | $packet =~ s/\n//g; |
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| 109 | $response .= substr($packet, 8); |
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| 110 | $response .= "\n"; |
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| 111 | } |
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| 112 | |||
| 113 | return $response; |
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| 114 | } |
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| 115 | |||
| 116 | # "return" 1 to not generate an error when loading file |
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| 117 | 1; |
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| 118 |