mdw@git.distorted.org.uk Git - sgt/putty/blob - contrib/logparse.pl

   1 #!/usr/bin/perl
   2
   3 use strict;
   4 use warnings;
   5 use FileHandle;
   6
   7 my $dumpchannels = 0;
   8 my $dumpdata = 0;
   9 while ($ARGV[0] =~ /^-/) {
  10     my $opt = shift @ARGV;
  11     if ($opt eq "--") {
  12         last; # stop processing options
  13     } elsif ($opt eq "-c") {
  14         $dumpchannels = 1;
  15     } elsif ($opt eq "-d") {
  16         $dumpdata = 1;
  17     } else {
  18         die "unrecognised option '$opt'\n";
  19     }
  20 }
  21
  22 my @channels = (); # ultimate channel ids are indices in this array
  23 my %chan_by_id = (); # indexed by 'c%d' or 's%d' for client and server ids
  24 my %globalreq = (); # indexed by 'i' or 'o'
  25
  26 my %packets = (
  27 #define SSH2_MSG_DISCONNECT                       1     /* 0x1 */
  28     'SSH2_MSG_DISCONNECT' => sub {
  29         my ($direction, $seq, $data) = @_;
  30         my ($reason, $description, $lang) = &parse("uss", $data);
  31         printf "%s\n", &str($description);
  32     },
  33 #define SSH2_MSG_IGNORE                           2     /* 0x2 */
  34     'SSH2_MSG_IGNORE' => sub {
  35         my ($direction, $seq, $data) = @_;
  36         my ($str) = &parse("s", $data);
  37         printf "(%d bytes)\n", length $str;
  38     },
  39 #define SSH2_MSG_UNIMPLEMENTED                    3     /* 0x3 */
  40     'SSH2_MSG_UNIMPLEMENTED' => sub {
  41         my ($direction, $seq, $data) = @_;
  42         my ($rseq) = &parse("u", $data);
  43         printf "i%d\n", $rseq;
  44     },
  45 #define SSH2_MSG_DEBUG                            4     /* 0x4 */
  46     'SSH2_MSG_DEBUG' => sub {
  47         my ($direction, $seq, $data) = @_;
  48         my ($disp, $message, $lang) = &parse("bss", $data);
  49         printf "%s\n", &str($message);
  50     },
  51 #define SSH2_MSG_SERVICE_REQUEST                  5     /* 0x5 */
  52     'SSH2_MSG_SERVICE_REQUEST' => sub {
  53         my ($direction, $seq, $data) = @_;
  54         my ($service) = &parse("s", $data);
  55         printf "%s\n", &str($service);
  56     },
  57 #define SSH2_MSG_SERVICE_ACCEPT                   6     /* 0x6 */
  58     'SSH2_MSG_SERVICE_ACCEPT' => sub {
  59         my ($direction, $seq, $data) = @_;
  60         my ($service) = &parse("s", $data);
  61         printf "%s\n", &str($service);
  62     },
  63 #define SSH2_MSG_KEXINIT                          20    /* 0x14 */
  64     'SSH2_MSG_KEXINIT' => sub {
  65         my ($direction, $seq, $data) = @_;
  66         print "\n";
  67     },
  68 #define SSH2_MSG_NEWKEYS                          21    /* 0x15 */
  69     'SSH2_MSG_NEWKEYS' => sub {
  70         my ($direction, $seq, $data) = @_;
  71         print "\n";
  72     },
  73 #define SSH2_MSG_KEXDH_INIT                       30    /* 0x1e */
  74     'SSH2_MSG_KEXDH_INIT' => sub {
  75         my ($direction, $seq, $data) = @_;
  76         print "\n";
  77     },
  78 #define SSH2_MSG_KEXDH_REPLY                      31    /* 0x1f */
  79     'SSH2_MSG_KEXDH_REPLY' => sub {
  80         my ($direction, $seq, $data) = @_;
  81         print "\n";
  82     },
  83 #define SSH2_MSG_KEX_DH_GEX_REQUEST               30    /* 0x1e */
  84     'SSH2_MSG_KEX_DH_GEX_REQUEST' => sub {
  85         my ($direction, $seq, $data) = @_;
  86         print "\n";
  87     },
  88 #define SSH2_MSG_KEX_DH_GEX_GROUP                 31    /* 0x1f */
  89     'SSH2_MSG_KEX_DH_GEX_GROUP' => sub {
  90         my ($direction, $seq, $data) = @_;
  91         print "\n";
  92     },
  93 #define SSH2_MSG_KEX_DH_GEX_INIT                  32    /* 0x20 */
  94     'SSH2_MSG_KEX_DH_GEX_INIT' => sub {
  95         my ($direction, $seq, $data) = @_;
  96         print "\n";
  97     },
  98 #define SSH2_MSG_KEX_DH_GEX_REPLY                 33    /* 0x21 */
  99     'SSH2_MSG_KEX_DH_GEX_REPLY' => sub {
 100         my ($direction, $seq, $data) = @_;
 101         print "\n";
 102     },
 103 #define SSH2_MSG_KEXRSA_PUBKEY                    30    /* 0x1e */
 104     'SSH2_MSG_KEXRSA_PUBKEY' => sub {
 105         my ($direction, $seq, $data) = @_;
 106         print "\n";
 107     },
 108 #define SSH2_MSG_KEXRSA_SECRET                    31    /* 0x1f */
 109     'SSH2_MSG_KEXRSA_SECRET' => sub {
 110         my ($direction, $seq, $data) = @_;
 111         print "\n";
 112     },
 113 #define SSH2_MSG_KEXRSA_DONE                      32    /* 0x20 */
 114     'SSH2_MSG_KEXRSA_DONE' => sub {
 115         my ($direction, $seq, $data) = @_;
 116         print "\n";
 117     },
 118 #define SSH2_MSG_USERAUTH_REQUEST                 50    /* 0x32 */
 119     'SSH2_MSG_USERAUTH_REQUEST' => sub {
 120         my ($direction, $seq, $data) = @_;
 121         my ($user, $service, $method) = &parse("sss", $data);
 122         my $out = sprintf "%s %s %s",
 123             &str($user), &str($service), &str($method);
 124         if ($method eq "publickey") {
 125             my ($real) = &parse("b", $data);
 126             $out .= " real=$real";
 127         } elsif ($method eq "password") {
 128             my ($change) = &parse("b", $data);
 129             $out .= " change=$change";
 130         }
 131         print "$out\n";
 132     },
 133 #define SSH2_MSG_USERAUTH_FAILURE                 51    /* 0x33 */
 134     'SSH2_MSG_USERAUTH_FAILURE' => sub {
 135         my ($direction, $seq, $data) = @_;
 136         my ($options) = &parse("s", $data);
 137         printf "%s\n", &str($options);
 138     },
 139 #define SSH2_MSG_USERAUTH_SUCCESS                 52    /* 0x34 */
 140     'SSH2_MSG_USERAUTH_SUCCESS' => sub {
 141         my ($direction, $seq, $data) = @_;
 142         print "\n";
 143     },
 144 #define SSH2_MSG_USERAUTH_BANNER                  53    /* 0x35 */
 145     'SSH2_MSG_USERAUTH_BANNER' => sub {
 146         my ($direction, $seq, $data) = @_;
 147         print "\n";
 148     },
 149 #define SSH2_MSG_USERAUTH_PK_OK                   60    /* 0x3c */
 150     'SSH2_MSG_USERAUTH_PK_OK' => sub {
 151         my ($direction, $seq, $data) = @_;
 152         print "\n";
 153     },
 154 #define SSH2_MSG_USERAUTH_PASSWD_CHANGEREQ        60    /* 0x3c */
 155     'SSH2_MSG_USERAUTH_PASSWD_CHANGEREQ' => sub {
 156         my ($direction, $seq, $data) = @_;
 157         print "\n";
 158     },
 159 #define SSH2_MSG_USERAUTH_INFO_REQUEST            60    /* 0x3c */
 160     'SSH2_MSG_USERAUTH_INFO_REQUEST' => sub {
 161         my ($direction, $seq, $data) = @_;
 162         print "\n";
 163     },
 164 #define SSH2_MSG_USERAUTH_INFO_RESPONSE           61    /* 0x3d */
 165     'SSH2_MSG_USERAUTH_INFO_RESPONSE' => sub {
 166         my ($direction, $seq, $data) = @_;
 167         print "\n";
 168     },
 169 #define SSH2_MSG_GLOBAL_REQUEST                   80    /* 0x50 */
 170     'SSH2_MSG_GLOBAL_REQUEST' => sub {
 171         my ($direction, $seq, $data) = @_;
 172         my ($type, $wantreply) = &parse("sb", $data);
 173         printf "%s (%s)", $type, $wantreply eq "yes" ? "reply" : "noreply";
 174         my $request = [$seq, $type];
 175         push @{$globalreq{$direction}}, $request if $wantreply;
 176         if ($type eq "tcpip-forward" or $type eq "cancel-tcpip-forward") {
 177             my ($addr, $port) = &parse("su", $data);
 178             printf " %s:%s", $addr, $port;
 179             push @$request, $port;
 180         }
 181         print "\n";
 182     },
 183 #define SSH2_MSG_REQUEST_SUCCESS                  81    /* 0x51 */
 184     'SSH2_MSG_REQUEST_SUCCESS' => sub {
 185         my ($direction, $seq, $data) = @_;
 186         my $otherdir = ($direction eq "i" ? "o" : "i");
 187         my $request = shift @{$globalreq{$otherdir}};
 188         if (defined $request) {
 189             printf "to %s", $request->[0];
 190             if ($request->[1] eq "tcpip-forward" and $request->[2] == 0) {
 191                 my ($port) = &parse("u", $data);
 192                 printf " port=%s", $port;
 193             }
 194         } else {
 195             print "(spurious?)";
 196         }
 197         print "\n";
 198     },
 199 #define SSH2_MSG_REQUEST_FAILURE                  82    /* 0x52 */
 200     'SSH2_MSG_REQUEST_FAILURE' => sub {
 201         my ($direction, $seq, $data) = @_;
 202         my $otherdir = ($direction eq "i" ? "o" : "i");
 203         my $request = shift @{$globalreq{$otherdir}};
 204         if (defined $request) {
 205             printf "to %s", $request->[0];
 206         } else {
 207             print "(spurious?)";
 208         }
 209         print "\n";
 210     },
 211 #define SSH2_MSG_CHANNEL_OPEN                     90    /* 0x5a */
 212     'SSH2_MSG_CHANNEL_OPEN' => sub {
 213         my ($direction, $seq, $data) = @_;
 214         my ($type, $sid, $winsize, $packet) = &parse("suuu", $data);
 215         # CHANNEL_OPEN tells the other side the _sender's_ id for the
 216         # channel, so this choice between "s" and "c" prefixes is
 217         # opposite to every other message in the protocol, which all
 218         # quote the _recipient's_ id of the channel.
 219         $sid = ($direction eq "i" ? "s" : "c") . $sid;
 220         my $chan = {'id'=>$sid, 'state'=>'halfopen'};
 221         push @channels, $chan;
 222         my $index = $#channels;
 223         $chan_by_id{$sid} = $index;
 224         printf "ch%d (%s) %s", $index, $chan->{'id'}, $type;
 225         if ($type eq "x11") {
 226             my ($addr, $port) = &parse("su", $data);
 227             printf " from %s:%s", $addr, $port;
 228         } elsif ($type eq "forwarded-tcpip") {
 229             my ($saddr, $sport, $paddr, $pport) = &parse("susu", $data);
 230             printf " to %s:%s from %s:%s", $saddr, $sport, $paddr, $pport;
 231         } elsif ($type eq "direct-tcpip") {
 232             my ($daddr, $dport, $saddr, $sport) = &parse("susu", $data);
 233             printf " to %s:%s from %s:%s", $daddr, $dport, $saddr, $sport;
 234         }
 235         print "\n";
 236     },
 237 #define SSH2_MSG_CHANNEL_OPEN_CONFIRMATION        91    /* 0x5b */
 238     'SSH2_MSG_CHANNEL_OPEN_CONFIRMATION' => sub {
 239         my ($direction, $seq, $data) = @_;
 240         my ($rid, $sid, $winsize, $packet) = &parse("uuuu", $data);
 241         $rid = ($direction eq "i" ? "c" : "s") . $rid;
 242         my $index = $chan_by_id{$rid};
 243         $sid = ($direction eq "i" ? "s" : "c") . $sid;
 244         $chan_by_id{$sid} = $index;
 245         my $chan = $channels[$index];
 246         $chan->{'id'} = ($direction eq "i" ? "$rid/$sid" : "$sid/$rid");
 247         $chan->{'state'} = 'open';
 248         printf "ch%d (%s)\n", $index, $chan->{'id'};
 249     },
 250 #define SSH2_MSG_CHANNEL_OPEN_FAILURE             92    /* 0x5c */
 251     'SSH2_MSG_CHANNEL_OPEN_FAILURE' => sub {
 252         my ($direction, $seq, $data) = @_;
 253         my ($rid, $reason, $desc, $lang) = &parse("uuss", $data);
 254         $rid = ($direction eq "i" ? "c" : "s") . $rid;
 255         my $index = $chan_by_id{$rid};
 256         my $chan = $channels[$index];
 257         $chan->{'state'} = 'rejected';
 258         printf "ch%d (%s) %s\n", $index, $chan->{'id'}, &str($reason);
 259     },
 260 #define SSH2_MSG_CHANNEL_WINDOW_ADJUST            93    /* 0x5d */
 261     'SSH2_MSG_CHANNEL_WINDOW_ADJUST' => sub {
 262         my ($direction, $seq, $data) = @_;
 263         my ($rid, $bytes) = &parse("uu", $data);
 264         $rid = ($direction eq "i" ? "c" : "s") . $rid;
 265         my $index = $chan_by_id{$rid};
 266         my $chan = $channels[$index];
 267         printf "ch%d (%s) +%s\n", $index, $chan->{'id'}, $bytes;
 268     },
 269 #define SSH2_MSG_CHANNEL_DATA                     94    /* 0x5e */
 270     'SSH2_MSG_CHANNEL_DATA' => sub {
 271         my ($direction, $seq, $data) = @_;
 272         my ($rid, $bytes) = &parse("uu", $data);
 273         $rid = ($direction eq "i" ? "c" : "s") . $rid;
 274         my $index = $chan_by_id{$rid};
 275         my $chan = $channels[$index];
 276         printf "ch%d (%s), %s bytes\n", $index, $chan->{'id'}, $bytes;
 277         my @realdata = splice @$data, 0, $bytes;
 278         if ($dumpdata) {
 279             my $filekey = $direction . "file";
 280             if (!defined $chan->{$filekey}) {
 281                 my $filename = sprintf "ch%d.%s", $index, $direction;
 282                 $chan->{$filekey} = FileHandle->new(">$filename");
 283                 if (!defined $chan->{$filekey}) {
 284                     die "$filename: $!\n";
 285                 }
 286             }
 287             die "channel data not present in $seq\n" if @realdata < $bytes;
 288             my $rawdata = pack "C*", @realdata;
 289             my $fh = $chan->{$filekey};
 290             print $fh $rawdata;
 291         }
 292         if (@realdata == $bytes and defined $chan->{$direction."data"}) {
 293             my $rawdata = pack "C*", @realdata;
 294             $chan->{$direction."data"}->($chan, $index, $direction, $rawdata);
 295         }
 296     },
 297 #define SSH2_MSG_CHANNEL_EXTENDED_DATA            95    /* 0x5f */
 298     'SSH2_MSG_CHANNEL_EXTENDED_DATA' => sub {
 299         my ($direction, $seq, $data) = @_;
 300         my ($rid, $bytes) = &parse("uu", $data);
 301         $rid = ($direction eq "i" ? "c" : "s") . $rid;
 302         my $index = $chan_by_id{$rid};
 303         my $chan = $channels[$index];
 304         printf "ch%d (%s), %s bytes\n", $index, $chan->{'id'}, $bytes;
 305         my @realdata = splice @$data, 0, $bytes;
 306         if ($dumpdata) {
 307             # We treat EXTENDED_DATA as equivalent to DATA, for the
 308             # moment. It's not clear what else would be a better thing
 309             # to do with it, and this at least is the Right Answer if
 310             # the data is going to a terminal and the aim is to debug
 311             # the terminal emulator.
 312             my $filekey = $direction . "file";
 313             if (!defined $chan->{$filekey}) {
 314                 my $filename = sprintf "ch%d.%s", $index, $direction;
 315                 $chan->{$filekey} = FileHandle->new;
 316                 if (!$chan->{$filekey}->open(">", $filename)) {
 317                     die "$filename: $!\n";
 318                 }
 319             }
 320             die "channel data not present in $seq\n" if @realdata < $bytes;
 321             my $rawdata = pack "C*", @realdata;
 322             my $fh = $chan->{$filekey};
 323             print $fh $rawdata;
 324         }
 325         if (@realdata == $bytes and defined $chan->{$direction."data"}) {
 326             my $rawdata = pack "C*", @realdata;
 327             $chan->{$direction."data"}->($chan, $index, $direction, $rawdata);
 328         }
 329     },
 330 #define SSH2_MSG_CHANNEL_EOF                      96    /* 0x60 */
 331     'SSH2_MSG_CHANNEL_EOF' => sub {
 332         my ($direction, $seq, $data) = @_;
 333         my ($rid) = &parse("uu", $data);
 334         $rid = ($direction eq "i" ? "c" : "s") . $rid;
 335         my $index = $chan_by_id{$rid};
 336         my $chan = $channels[$index];
 337         printf "ch%d (%s)\n", $index, $chan->{'id'};
 338     },
 339 #define SSH2_MSG_CHANNEL_CLOSE                    97    /* 0x61 */
 340     'SSH2_MSG_CHANNEL_CLOSE' => sub {
 341         my ($direction, $seq, $data) = @_;
 342         my ($rid) = &parse("uu", $data);
 343         $rid = ($direction eq "i" ? "c" : "s") . $rid;
 344         my $index = $chan_by_id{$rid};
 345         my $chan = $channels[$index];
 346         $chan->{'state'} = ($chan->{'state'} eq "open" ? "halfclosed" :
 347                             $chan->{'state'} eq "halfclosed" ? "closed" :
 348                             "confused");
 349         if ($chan->{'state'} eq "closed") {
 350             $chan->{'ifile'}->close if defined $chan->{'ifile'};
 351             $chan->{'ofile'}->close if defined $chan->{'ofile'};
 352         }
 353         printf "ch%d (%s)\n", $index, $chan->{'id'};
 354     },
 355 #define SSH2_MSG_CHANNEL_REQUEST                  98    /* 0x62 */
 356     'SSH2_MSG_CHANNEL_REQUEST' => sub {
 357         my ($direction, $seq, $data) = @_;
 358         my ($rid, $type, $wantreply) = &parse("usb", $data);
 359         $rid = ($direction eq "i" ? "c" : "s") . $rid;
 360         my $index = $chan_by_id{$rid};
 361         my $chan = $channels[$index];
 362         printf "ch%d (%s) %s (%s)",
 363             $index, $chan->{'id'}, $type, $wantreply eq "yes" ? "reply" : "noreply";
 364         push @{$chan->{'requests_'.$direction}}, [$seq, $type] if $wantreply;
 365         if ($type eq "pty-req") {
 366             my ($term, $w, $h, $pw, $ph, $modes) = &parse("suuuus", $data);
 367             printf " %s %sx%s", &str($term), $w, $h;
 368         } elsif ($type eq "x11-req") {
 369             my ($single, $xprot, $xcookie, $xscreen) = &parse("bssu", $data);
 370             print " one-off" if $single eq "yes";
 371             printf " %s :%s", $xprot, $xscreen;
 372         } elsif ($type eq "exec") {
 373             my ($command) = &parse("s", $data);
 374             printf " %s", &str($command);
 375         } elsif ($type eq "subsystem") {
 376             my ($subsys) = &parse("s", $data);
 377             printf " %s", &str($subsys);
 378             if ($subsys eq "sftp") {
 379                 &sftp_setup($index);
 380             }
 381         } elsif ($type eq "window-change") {
 382             my ($w, $h, $pw, $ph) = &parse("uuuu", $data);
 383             printf " %sx%s", $w, $h;
 384         } elsif ($type eq "xon-xoff") {
 385             my ($can) = &parse("b", $data);
 386             printf " %s", $can;
 387         } elsif ($type eq "signal") {
 388             my ($sig) = &parse("s", $data);
 389             printf " %s", &str($sig);
 390         } elsif ($type eq "exit-status") {
 391             my ($status) = &parse("u", $data);
 392             printf " %s", $status;
 393         } elsif ($type eq "exit-signal") {
 394             my ($sig, $core, $error, $lang) = &parse("sbss", $data);
 395             printf " %s", &str($sig);
 396             print " (core dumped)" if $core eq "yes";
 397         }
 398         print "\n";
 399     },
 400 #define SSH2_MSG_CHANNEL_SUCCESS                  99    /* 0x63 */
 401     'SSH2_MSG_CHANNEL_SUCCESS' => sub {
 402         my ($direction, $seq, $data) = @_;
 403         my ($rid) = &parse("uu", $data);
 404         $rid = ($direction eq "i" ? "c" : "s") . $rid;
 405         my $index = $chan_by_id{$rid};
 406         my $chan = $channels[$index];
 407         printf "ch%d (%s)", $index, $chan->{'id'};
 408         my $otherdir = ($direction eq "i" ? "o" : "i");
 409         my $request = shift @{$chan->{'requests_' . $otherdir}};
 410         if (defined $request) {
 411             printf " to %s", $request->[0];
 412         } else {
 413             print " (spurious?)";
 414         }
 415         print "\n";
 416     },
 417 #define SSH2_MSG_CHANNEL_FAILURE                  100   /* 0x64 */
 418     'SSH2_MSG_CHANNEL_FAILURE' => sub {
 419         my ($direction, $seq, $data) = @_;
 420         my ($rid) = &parse("uu", $data);
 421         $rid = ($direction eq "i" ? "c" : "s") . $rid;
 422         my $index = $chan_by_id{$rid};
 423         my $chan = $channels[$index];
 424         printf "ch%d (%s)", $index, $chan->{'id'};
 425         my $otherdir = ($direction eq "i" ? "o" : "i");
 426         my $request = shift @{$chan->{'requests_' . $otherdir}};
 427         if (defined $request) {
 428             printf " to %s", $request->[0];
 429         } else {
 430             print " (spurious?)";
 431         }
 432         print "\n";
 433     },
 434 #define SSH2_MSG_USERAUTH_GSSAPI_RESPONSE               60
 435     'SSH2_MSG_USERAUTH_GSSAPI_RESPONSE' => sub {
 436         my ($direction, $seq, $data) = @_;
 437         print "\n";
 438     },
 439 #define SSH2_MSG_USERAUTH_GSSAPI_TOKEN                  61
 440     'SSH2_MSG_USERAUTH_GSSAPI_TOKEN' => sub {
 441         my ($direction, $seq, $data) = @_;
 442         print "\n";
 443     },
 444 #define SSH2_MSG_USERAUTH_GSSAPI_EXCHANGE_COMPLETE      63
 445     'SSH2_MSG_USERAUTH_GSSAPI_EXCHANGE_COMPLETE' => sub {
 446         my ($direction, $seq, $data) = @_;
 447         print "\n";
 448     },
 449 #define SSH2_MSG_USERAUTH_GSSAPI_ERROR                  64
 450     'SSH2_MSG_USERAUTH_GSSAPI_ERROR' => sub {
 451         my ($direction, $seq, $data) = @_;
 452         print "\n";
 453     },
 454 #define SSH2_MSG_USERAUTH_GSSAPI_ERRTOK                 65
 455     'SSH2_MSG_USERAUTH_GSSAPI_ERRTOK' => sub {
 456         my ($direction, $seq, $data) = @_;
 457         print "\n";
 458     },
 459 #define SSH2_MSG_USERAUTH_GSSAPI_MIC                    66
 460     'SSH2_MSG_USERAUTH_GSSAPI_MIC' => sub {
 461         my ($direction, $seq, $data) = @_;
 462         print "\n";
 463     },
 464 );
 465
 466 my %sftp_packets = (
 467 #define SSH_FXP_INIT                              1     /* 0x1 */
 468     0x1 => sub {
 469         my ($chan, $index, $direction, $id, $data) = @_;
 470         my ($ver) = &parse("u", $data);
 471         printf "SSH_FXP_INIT %d\n", $ver;
 472     },
 473 #define SSH_FXP_VERSION                           2     /* 0x2 */
 474     0x2 => sub {
 475         my ($chan, $index, $direction, $id, $data) = @_;
 476         my ($ver) = &parse("u", $data);
 477         printf "SSH_FXP_VERSION %d\n", $ver;
 478     },
 479 #define SSH_FXP_OPEN                              3     /* 0x3 */
 480     0x3 => sub {
 481         my ($chan, $index, $direction, $id, $data) = @_;
 482         my ($reqid, $path, $pflags) = &parse("usu", $data);
 483         &sftp_logreq($chan, $direction, $reqid, $id, "SSH_FXP_OPEN");
 484         printf " \"%s\" ", $path;
 485         if ($pflags eq 0) {
 486             print "0";
 487         } else {
 488             my $sep = "";
 489             if ($pflags & 1) { $pflags ^= 1; print "${sep}READ"; $sep = "|"; }
 490             if ($pflags & 2) { $pflags ^= 2; print "${sep}WRITE"; $sep = "|"; }
 491             if ($pflags & 4) { $pflags ^= 4; print "${sep}APPEND"; $sep = "|"; }
 492             if ($pflags & 8) { $pflags ^= 8; print "${sep}CREAT"; $sep = "|"; }
 493             if ($pflags & 16) { $pflags ^= 16; print "${sep}TRUNC"; $sep = "|"; }
 494             if ($pflags & 32) { $pflags ^= 32; print "${sep}EXCL"; $sep = "|"; }
 495             if ($pflags) { print "${sep}${pflags}"; }
 496         }
 497         print "\n";
 498     },
 499 #define SSH_FXP_CLOSE                             4     /* 0x4 */
 500     0x4 => sub {
 501         my ($chan, $index, $direction, $id, $data) = @_;
 502         my ($reqid, $handle) = &parse("us", $data);
 503         &sftp_logreq($chan, $direction, $reqid, $id, "SSH_FXP_CLOSE");
 504         printf " \"%s\"", &stringescape($handle);
 505         print "\n";
 506     },
 507 #define SSH_FXP_READ                              5     /* 0x5 */
 508     0x5 => sub {
 509         my ($chan, $index, $direction, $id, $data) = @_;
 510         my ($reqid, $handle, $offset, $len) = &parse("usUu", $data);
 511         &sftp_logreq($chan, $direction, $reqid, $id, "SSH_FXP_READ");
 512         printf " \"%s\" %d %d", &stringescape($handle), $offset, $len;
 513         print "\n";
 514     },
 515 #define SSH_FXP_WRITE                             6     /* 0x6 */
 516     0x6 => sub {
 517         my ($chan, $index, $direction, $id, $data) = @_;
 518         my ($reqid, $handle, $offset, $wdata) = &parse("usUs", $data);
 519         &sftp_logreq($chan, $direction, $reqid, $id, "SSH_FXP_WRITE");
 520         printf " \"%s\" %d [%d bytes]", &stringescape($handle), $offset, length $wdata;
 521         print "\n";
 522     },
 523 #define SSH_FXP_LSTAT                             7     /* 0x7 */
 524     0x7 => sub {
 525         my ($chan, $index, $direction, $id, $data) = @_;
 526         my ($reqid, $path) = &parse("us", $data);
 527         &sftp_logreq($chan, $direction, $reqid, $id, "SSH_FXP_LSTAT");
 528         printf " \"%s\"", $path;
 529         print "\n";
 530     },
 531 #define SSH_FXP_FSTAT                             8     /* 0x8 */
 532     0x8 => sub {
 533         my ($chan, $index, $direction, $id, $data) = @_;
 534         my ($reqid, $handle) = &parse("us", $data);
 535         &sftp_logreq($chan, $direction, $reqid, $id, "SSH_FXP_FSTAT");
 536         printf " \"%s\"", &stringescape($handle);
 537         print "\n";
 538     },
 539 #define SSH_FXP_SETSTAT                           9     /* 0x9 */
 540     0x9 => sub {
 541         my ($chan, $index, $direction, $id, $data) = @_;
 542         my ($reqid, $path) = &parse("us", $data);
 543         &sftp_logreq($chan, $direction, $reqid, $id, "SSH_FXP_SETSTAT");
 544         my $attrs = &sftp_parse_attrs($data);
 545         printf " \"%s\" %s", $path, $attrs;
 546         print "\n";
 547     },
 548 #define SSH_FXP_FSETSTAT                          10    /* 0xa */
 549     0xa => sub {
 550         my ($chan, $index, $direction, $id, $data) = @_;
 551         my ($reqid, $handle) = &parse("us", $data);
 552         &sftp_logreq($chan, $direction, $reqid, $id, "SSH_FXP_FSETSTAT");
 553         my $attrs = &sftp_parse_attrs($data);
 554         printf " \"%s\" %s", &stringescape($handle), $attrs;
 555         print "\n";
 556     },
 557 #define SSH_FXP_OPENDIR                           11    /* 0xb */
 558     0xb => sub {
 559         my ($chan, $index, $direction, $id, $data) = @_;
 560         my ($reqid, $path) = &parse("us", $data);
 561         &sftp_logreq($chan, $direction, $reqid, $id, "SSH_FXP_OPENDIR");
 562         printf " \"%s\"", $path;
 563         print "\n";
 564     },
 565 #define SSH_FXP_READDIR                           12    /* 0xc */
 566     0xc => sub {
 567         my ($chan, $index, $direction, $id, $data) = @_;
 568         my ($reqid, $handle) = &parse("us", $data);
 569         &sftp_logreq($chan, $direction, $reqid, $id, "SSH_FXP_READDIR");
 570         printf " \"%s\"", &stringescape($handle);
 571         print "\n";
 572     },
 573 #define SSH_FXP_REMOVE                            13    /* 0xd */
 574     0xd => sub {
 575         my ($chan, $index, $direction, $id, $data) = @_;
 576         my ($reqid, $path) = &parse("us", $data);
 577         &sftp_logreq($chan, $direction, $reqid, $id, "SSH_FXP_REMOVE");
 578         printf " \"%s\"", $path;
 579         print "\n";
 580     },
 581 #define SSH_FXP_MKDIR                             14    /* 0xe */
 582     0xe => sub {
 583         my ($chan, $index, $direction, $id, $data) = @_;
 584         my ($reqid, $path) = &parse("us", $data);
 585         &sftp_logreq($chan, $direction, $reqid, $id, "SSH_FXP_MKDIR");
 586         printf " \"%s\"", $path;
 587         print "\n";
 588     },
 589 #define SSH_FXP_RMDIR                             15    /* 0xf */
 590     0xf => sub {
 591         my ($chan, $index, $direction, $id, $data) = @_;
 592         my ($reqid, $path) = &parse("us", $data);
 593         &sftp_logreq($chan, $direction, $reqid, $id, "SSH_FXP_RMDIR");
 594         printf " \"%s\"", $path;
 595         print "\n";
 596     },
 597 #define SSH_FXP_REALPATH                          16    /* 0x10 */
 598     0x10 => sub {
 599         my ($chan, $index, $direction, $id, $data) = @_;
 600         my ($reqid, $path) = &parse("us", $data);
 601         &sftp_logreq($chan, $direction, $reqid, $id, "SSH_FXP_REALPATH");
 602         printf " \"%s\"", $path;
 603         print "\n";
 604     },
 605 #define SSH_FXP_STAT                              17    /* 0x11 */
 606     0x11 => sub {
 607         my ($chan, $index, $direction, $id, $data) = @_;
 608         my ($reqid, $path) = &parse("us", $data);
 609         &sftp_logreq($chan, $direction, $reqid, $id, "SSH_FXP_STAT");
 610         printf " \"%s\"", $path;
 611         print "\n";
 612     },
 613 #define SSH_FXP_RENAME                            18    /* 0x12 */
 614     0x12 => sub {
 615         my ($chan, $index, $direction, $id, $data) = @_;
 616         my ($reqid, $srcpath, $dstpath) = &parse("uss", $data);
 617         &sftp_logreq($chan, $direction, $reqid, $id, "SSH_FXP_RENAME");
 618         printf " \"%s\" \"%s\"", $srcpath, $dstpath;
 619         print "\n";
 620     },
 621 #define SSH_FXP_STATUS                            101   /* 0x65 */
 622     0x65 => sub {
 623         my ($chan, $index, $direction, $id, $data) = @_;
 624         my ($reqid, $status) = &parse("uu", $data);
 625         &sftp_logreply($chan, $direction, $reqid, $id, "SSH_FXP_STATUS");
 626         print " ";
 627         if ($status eq "0") { print "SSH_FX_OK"; }
 628         elsif ($status eq "1") { print "SSH_FX_EOF"; }
 629         elsif ($status eq "2") { print "SSH_FX_NO_SUCH_FILE"; }
 630         elsif ($status eq "3") { print "SSH_FX_PERMISSION_DENIED"; }
 631         elsif ($status eq "4") { print "SSH_FX_FAILURE"; }
 632         elsif ($status eq "5") { print "SSH_FX_BAD_MESSAGE"; }
 633         elsif ($status eq "6") { print "SSH_FX_NO_CONNECTION"; }
 634         elsif ($status eq "7") { print "SSH_FX_CONNECTION_LOST"; }
 635         elsif ($status eq "8") { print "SSH_FX_OP_UNSUPPORTED"; }
 636         else { printf "[unknown status %d]", $status; }
 637         print "\n";
 638     },
 639 #define SSH_FXP_HANDLE                            102   /* 0x66 */
 640     0x66 => sub {
 641         my ($chan, $index, $direction, $id, $data) = @_;
 642         my ($reqid, $handle) = &parse("us", $data);
 643         &sftp_logreply($chan, $direction, $reqid, $id, "SSH_FXP_HANDLE");
 644         printf " \"%s\"", &stringescape($handle);
 645         print "\n";
 646     },
 647 #define SSH_FXP_DATA                              103   /* 0x67 */
 648     0x67 => sub {
 649         my ($chan, $index, $direction, $id, $data) = @_;
 650         my ($reqid, $retdata) = &parse("us", $data);
 651         &sftp_logreply($chan, $direction, $reqid, $id, "SSH_FXP_DATA");
 652         printf " [%d bytes]", length $retdata;
 653         print "\n";
 654     },
 655 #define SSH_FXP_NAME                              104   /* 0x68 */
 656     0x68 => sub {
 657         my ($chan, $index, $direction, $id, $data) = @_;
 658         my ($reqid, $count) = &parse("uu", $data);
 659         &sftp_logreply($chan, $direction, $reqid, $id, "SSH_FXP_NAME");
 660         for my $i (1..$count) {
 661             my ($name, $longname) = &parse("ss", $data);
 662             my $attrs = &sftp_parse_attrs($data);
 663             print " [name=\"$name\", longname=\"$longname\", attrs=$attrs]";
 664         }
 665         print "\n";
 666     },
 667 #define SSH_FXP_ATTRS                             105   /* 0x69 */
 668     0x69 => sub {
 669         my ($chan, $index, $direction, $id, $data) = @_;
 670         my ($reqid) = &parse("u", $data);
 671         &sftp_logreply($chan, $direction, $reqid, $id, "SSH_FXP_ATTRS");
 672         my $attrs = &sftp_parse_attrs($data);
 673         printf " %s", $attrs;
 674         print "\n";
 675     },
 676 #define SSH_FXP_EXTENDED                          200   /* 0xc8 */
 677     0xc8 => sub {
 678         my ($chan, $index, $direction, $id, $data) = @_;
 679         my ($reqid, $type) = &parse("us", $data);
 680         &sftp_logreq($chan, $direction, $reqid, $id, "SSH_FXP_EXTENDED");
 681         printf " \"%s\"", $type;
 682         print "\n";
 683     },
 684 #define SSH_FXP_EXTENDED_REPLY                    201   /* 0xc9 */
 685     0xc9 => sub {
 686         my ($chan, $index, $direction, $id, $data) = @_;
 687         my ($reqid) = &parse("u", $data);
 688         print "\n";
 689         &sftp_logreply($chan, $direction, $reqid,$id,"SSH_FXP_EXTENDED_REPLY");
 690     },
 691 );
 692
 693 my ($direction, $seq, $ourseq, $type, $data, $recording);
 694 my %ourseqs = ('i'=>0, 'o'=>0);
 695
 696 $recording = 0;
 697 while (<>) {
 698     if ($recording) {
 699         if (/^  [0-9a-fA-F]{8}  ((?:[0-9a-fA-F]{2} )*[0-9a-fA-F]{2})/) {
 700             push @$data, map { $_ eq "XX" ? -1 : hex $_ } split / /, $1;
 701         } else {
 702             $recording = 0;
 703             my $fullseq = "$direction$ourseq";
 704             print "$fullseq: $type ";
 705             if (defined $packets{$type}) {
 706                 $packets{$type}->($direction, $fullseq, $data);
 707             } else {
 708                 printf "raw %s\n", join "", map { sprintf "%02x", $_ } @$data;
 709             }
 710         }
 711     }
 712     if (/^(Incoming|Outgoing) packet #0x([0-9a-fA-F]+), type \d+ \/ 0x[0-9a-fA-F]+ \((.*)\)/) {
 713         $direction = ($1 eq "Incoming" ? 'i' : 'o');
 714         # $seq is the sequence number quoted in the log file. $ourseq
 715         # is our own count of the sequence number, which differs in
 716         # that it shouldn't wrap at 2^32, should anyone manage to run
 717         # this script over such a huge log file.
 718         $seq = hex $2;
 719         $ourseq = $ourseqs{$direction}++;
 720         $type = $3;
 721         $data = [];
 722         $recording = 1;
 723     }
 724 }
 725
 726 if ($dumpchannels) {
 727     my %stateorder = ('closed'=>0, 'rejected'=>1,
 728                       'halfclosed'=>2, 'open'=>3, 'halfopen'=>4);
 729     for my $index (0..$#channels) {
 730         my $chan = $channels[$index];
 731         my $so = $stateorder{$chan->{'state'}};
 732         $so = 1000 unless defined $so; # any state I've missed above comes last
 733         $chan->{'index'} = sprintf "ch%d", $index;
 734         $chan->{'order'} = sprintf "%08d %08d", $so, $index;
 735     }
 736     my @sortedchannels = sort { $a->{'order'} cmp $b->{'order'} } @channels;
 737     for my $chan (@sortedchannels) {
 738         printf "%s (%s): %s\n", $chan->{'index'}, $chan->{'id'}, $chan->{'state'};
 739     }
 740 }
 741
 742 sub parseone {
 743     my ($type, $data) = @_;
 744     if ($type eq "u") { # uint32
 745         my @bytes = splice @$data, 0, 4;
 746         return "<missing>" if @bytes < 4 or grep { $_<0 } @bytes;
 747         return unpack "N", pack "C*", @bytes;
 748     } elsif ($type eq "U") { # uint64
 749         my @bytes = splice @$data, 0, 8;
 750         return "<missing>" if @bytes < 8 or grep { $_<0 } @bytes;
 751         my @words = unpack "NN", pack "C*", @bytes;
 752         return ($words[0] << 32) + $words[1];
 753     } elsif ($type eq "b") { # boolean
 754         my $byte = shift @$data;
 755         return "<missing>" if !defined $byte or $byte < 0;
 756         return $byte ? "yes" : "no";
 757     } elsif ($type eq "B") { # byte
 758         my $byte = shift @$data;
 759         return "<missing>" if !defined $byte or $byte < 0;
 760         return $byte;
 761     } elsif ($type eq "s" or $type eq "m") { # string, mpint
 762         my @bytes = splice @$data, 0, 4;
 763         return "<missing>" if @bytes < 4 or grep { $_<0 } @bytes;
 764         my $len = unpack "N", pack "C*", @bytes;
 765         @bytes = splice @$data, 0, $len;
 766         return "<missing>" if @bytes < $len or grep { $_<0 } @bytes;
 767         if ($type eq "mpint") {
 768             my $str = "";
 769             if ($bytes[0] >= 128) {
 770                 # Take two's complement.
 771                 @bytes = map { 0xFF ^ $_ } @bytes;
 772                 for my $i (reverse 0..$#bytes) {
 773                     if ($bytes[$i] < 0xFF) {
 774                         $bytes[$i]++;
 775                         last;
 776                     } else {
 777                         $bytes[$i] = 0;
 778                     }
 779                 }
 780                 $str = "-";
 781             }
 782             $str .= "0x" . join "", map { sprintf "%02x", $_ } @bytes;
 783             return $str;
 784         } else {
 785             return pack "C*", @bytes;
 786         }
 787     }
 788 }
 789
 790 sub parse {
 791     my ($template, $data) = @_;
 792     return map { &parseone($_, $data) } split //, $template;
 793 }
 794
 795 sub str {
 796     # Quote as a string. If I get enthusiastic I might arrange for
 797     # strange characters inside the string to be quoted.
 798     my $str = shift @_;
 799     return "'$str'";
 800 }
 801
 802 sub sftp_setup {
 803     my $index = shift @_;
 804     my $chan = $channels[$index];
 805     $chan->{'obuf'} = $chan->{'ibuf'} = '';
 806     $chan->{'ocnt'} = $chan->{'icnt'} = 0;
 807     $chan->{'odata'} = $chan->{'idata'} = \&sftp_data;
 808     $chan->{'sftpreqs'} = {};
 809 }
 810
 811 sub sftp_data {
 812     my ($chan, $index, $direction, $data) = @_;
 813     my $buf = \$chan->{$direction."buf"};
 814     my $cnt = \$chan->{$direction."cnt"};
 815     $$buf .= $data;
 816     while (length $$buf >= 4) {
 817         my $msglen = unpack "N", $$buf;
 818         last if length $$buf < 4 + $msglen;
 819         my $msg = substr $$buf, 4, $msglen;
 820         $$buf = substr $$buf, 4 + $msglen;
 821         $msg = [unpack "C*", $msg];
 822         my $type = shift @$msg;
 823         my $id = sprintf "ch%d_sftp_%s%d", $index, $direction, ${$cnt}++;
 824         print "$id: ";
 825         if (defined $sftp_packets{$type}) {
 826             $sftp_packets{$type}->($chan, $index, $direction, $id, $msg);
 827         } else {
 828             printf "unknown SFTP packet type %d\n", $type;
 829         }
 830     }
 831 }
 832
 833 sub sftp_logreq {
 834     my ($chan, $direction, $reqid, $id, $name) = @_;
 835     print "$name";
 836     if ($direction eq "o") { # requests coming _in_ are too weird to track
 837         $chan->{'sftpreqs'}->{$reqid} = $id;
 838     }
 839 }
 840
 841 sub sftp_logreply {
 842     my ($chan, $direction, $reqid, $id, $name) = @_;
 843     print "$name";
 844     if ($direction eq "i") { # replies going _out_ are too weird to track
 845         if (defined $chan->{'sftpreqs'}->{$reqid}) {
 846             print " to ", $chan->{'sftpreqs'}->{$reqid};
 847             $chan->{'sftpreqs'}->{$reqid} = undef;
 848         }
 849     }
 850 }
 851
 852 sub sftp_parse_attrs {
 853     my ($data) = @_;
 854     my ($flags) = &parse("u", $data);
 855     return $flags if $flags eq "<missing>";
 856     my $out = "{";
 857     my $sep = "";
 858     if ($flags & 0x00000001) { # SSH_FILEXFER_ATTR_SIZE
 859         $out .= $sep . sprintf "size=%d", &parse("U", $data);
 860         $sep = ", ";
 861     }
 862     if ($flags & 0x00000002) { # SSH_FILEXFER_ATTR_UIDGID
 863         $out .= $sep . sprintf "uid=%d", &parse("u", $data);
 864         $out .= $sep . sprintf "gid=%d", &parse("u", $data);
 865         $sep = ", ";
 866     }
 867     if ($flags & 0x00000004) { # SSH_FILEXFER_ATTR_PERMISSIONS
 868         $out .= $sep . sprintf "perms=%#o", &parse("u", $data);
 869         $sep = ", ";
 870     }
 871     if ($flags & 0x00000008) { # SSH_FILEXFER_ATTR_ACMODTIME
 872         $out .= $sep . sprintf "atime=%d", &parse("u", $data);
 873         $out .= $sep . sprintf "mtime=%d", &parse("u", $data);
 874         $sep = ", ";
 875     }
 876     if ($flags & 0x80000000) { # SSH_FILEXFER_ATTR_EXTENDED
 877         my $extcount = &parse("u", $data);
 878         while ($extcount-- > 0) {
 879             $out .= $sep . sprintf "\"%s\"=\"%s\"", &parse("ss", $data);
 880             $sep = ", ";
 881         }
 882     }
 883     $out .= "}";
 884     return $out;
 885 }
 886
 887 sub stringescape {
 888     my ($str) = @_;
 889     $str =~ s!\\!\\\\!g;
 890     $str =~ s![^ -~]!sprintf "\\x%02X", ord $&!eg;
 891     return $str;
 892 }