| 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 $wantreply eq "yes"; |
| 176 | if ($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 | 'i'=>{'win'=>0, 'seq'=>0}, |
| 222 | 'o'=>{'win'=>0, 'seq'=>0}}; |
| 223 | $chan->{$direction}{'win'} = $winsize; |
| 224 | push @channels, $chan; |
| 225 | my $index = $#channels; |
| 226 | $chan_by_id{$sid} = $index; |
| 227 | printf "ch%d (%s) %s (--%d)", $index, $chan->{'id'}, $type, |
| 228 | $chan->{$direction}{'win'}; |
| 229 | if ($type eq "x11") { |
| 230 | my ($addr, $port) = &parse("su", $data); |
| 231 | printf " from %s:%s", $addr, $port; |
| 232 | } elsif ($type eq "forwarded-tcpip") { |
| 233 | my ($saddr, $sport, $paddr, $pport) = &parse("susu", $data); |
| 234 | printf " to %s:%s from %s:%s", $saddr, $sport, $paddr, $pport; |
| 235 | } elsif ($type eq "direct-tcpip") { |
| 236 | my ($daddr, $dport, $saddr, $sport) = &parse("susu", $data); |
| 237 | printf " to %s:%s from %s:%s", $daddr, $dport, $saddr, $sport; |
| 238 | } |
| 239 | print "\n"; |
| 240 | }, |
| 241 | #define SSH2_MSG_CHANNEL_OPEN_CONFIRMATION 91 /* 0x5b */ |
| 242 | 'SSH2_MSG_CHANNEL_OPEN_CONFIRMATION' => sub { |
| 243 | my ($direction, $seq, $data) = @_; |
| 244 | my ($rid, $sid, $winsize, $packet) = &parse("uuuu", $data); |
| 245 | $rid = ($direction eq "i" ? "c" : "s") . $rid; |
| 246 | my $index = $chan_by_id{$rid}; |
| 247 | $sid = ($direction eq "i" ? "s" : "c") . $sid; |
| 248 | $chan_by_id{$sid} = $index; |
| 249 | my $chan = $channels[$index]; |
| 250 | $chan->{'id'} = ($direction eq "i" ? "$rid/$sid" : "$sid/$rid"); |
| 251 | $chan->{'state'} = 'open'; |
| 252 | $chan->{$direction}{'win'} = $winsize; |
| 253 | printf "ch%d (%s) (--%d)\n", $index, $chan->{'id'}, |
| 254 | $chan->{$direction}{'win'}; |
| 255 | }, |
| 256 | #define SSH2_MSG_CHANNEL_OPEN_FAILURE 92 /* 0x5c */ |
| 257 | 'SSH2_MSG_CHANNEL_OPEN_FAILURE' => sub { |
| 258 | my ($direction, $seq, $data) = @_; |
| 259 | my ($rid, $reason, $desc, $lang) = &parse("uuss", $data); |
| 260 | $rid = ($direction eq "i" ? "c" : "s") . $rid; |
| 261 | my $index = $chan_by_id{$rid}; |
| 262 | my $chan = $channels[$index]; |
| 263 | $chan->{'state'} = 'rejected'; |
| 264 | printf "ch%d (%s) %s\n", $index, $chan->{'id'}, &str($reason); |
| 265 | }, |
| 266 | #define SSH2_MSG_CHANNEL_WINDOW_ADJUST 93 /* 0x5d */ |
| 267 | 'SSH2_MSG_CHANNEL_WINDOW_ADJUST' => sub { |
| 268 | my ($direction, $seq, $data) = @_; |
| 269 | my ($rid, $bytes) = &parse("uu", $data); |
| 270 | $rid = ($direction eq "i" ? "c" : "s") . $rid; |
| 271 | my $index = $chan_by_id{$rid}; |
| 272 | my $chan = $channels[$index]; |
| 273 | $chan->{$direction}{'win'} += $bytes; |
| 274 | printf "ch%d (%s) +%d (--%d)\n", $index, $chan->{'id'}, $bytes, |
| 275 | $chan->{$direction}{'win'}; |
| 276 | }, |
| 277 | #define SSH2_MSG_CHANNEL_DATA 94 /* 0x5e */ |
| 278 | 'SSH2_MSG_CHANNEL_DATA' => sub { |
| 279 | my ($direction, $seq, $data) = @_; |
| 280 | my ($rid, $bytes) = &parse("uu", $data); |
| 281 | $rid = ($direction eq "i" ? "c" : "s") . $rid; |
| 282 | my $index = $chan_by_id{$rid}; |
| 283 | my $chan = $channels[$index]; |
| 284 | $chan->{$direction}{'seq'} += $bytes; |
| 285 | printf "ch%d (%s), %s bytes (%d--%d)\n", $index, $chan->{'id'}, $bytes, |
| 286 | $chan->{$direction}{'seq'}-$bytes, $chan->{$direction}{'seq'}; |
| 287 | my @realdata = splice @$data, 0, $bytes; |
| 288 | if ($dumpdata) { |
| 289 | my $filekey = $direction . "file"; |
| 290 | if (!defined $chan->{$filekey}) { |
| 291 | my $filename = sprintf "ch%d.%s", $index, $direction; |
| 292 | $chan->{$filekey} = FileHandle->new(">$filename"); |
| 293 | if (!defined $chan->{$filekey}) { |
| 294 | die "$filename: $!\n"; |
| 295 | } |
| 296 | } |
| 297 | die "channel data not present in $seq\n" if @realdata < $bytes; |
| 298 | my $rawdata = pack "C*", @realdata; |
| 299 | my $fh = $chan->{$filekey}; |
| 300 | print $fh $rawdata; |
| 301 | } |
| 302 | if (@realdata == $bytes and defined $chan->{$direction."data"}) { |
| 303 | my $rawdata = pack "C*", @realdata; |
| 304 | $chan->{$direction."data"}->($chan, $index, $direction, $rawdata); |
| 305 | } |
| 306 | }, |
| 307 | #define SSH2_MSG_CHANNEL_EXTENDED_DATA 95 /* 0x5f */ |
| 308 | 'SSH2_MSG_CHANNEL_EXTENDED_DATA' => sub { |
| 309 | my ($direction, $seq, $data) = @_; |
| 310 | my ($rid, $bytes) = &parse("uu", $data); |
| 311 | $rid = ($direction eq "i" ? "c" : "s") . $rid; |
| 312 | my $index = $chan_by_id{$rid}; |
| 313 | my $chan = $channels[$index]; |
| 314 | my $dir = $direction eq "i" ? 'sc' : 'cs'; |
| 315 | $chan->{$dir}{'seq'} += $bytes; |
| 316 | printf "ch%d (%s), %s bytes (%d--%d)\n", $index, $chan->{'id'}, $bytes, |
| 317 | $chan->{$dir}{$seq}-$bytes, $chan->{$dir}{$seq}; |
| 318 | printf "ch%d (%s), %s bytes\n", $index, $chan->{'id'}, $bytes; |
| 319 | my @realdata = splice @$data, 0, $bytes; |
| 320 | if ($dumpdata) { |
| 321 | # We treat EXTENDED_DATA as equivalent to DATA, for the |
| 322 | # moment. It's not clear what else would be a better thing |
| 323 | # to do with it, and this at least is the Right Answer if |
| 324 | # the data is going to a terminal and the aim is to debug |
| 325 | # the terminal emulator. |
| 326 | my $filekey = $direction . "file"; |
| 327 | if (!defined $chan->{$filekey}) { |
| 328 | my $filename = sprintf "ch%d.%s", $index, $direction; |
| 329 | $chan->{$filekey} = FileHandle->new; |
| 330 | if (!$chan->{$filekey}->open(">", $filename)) { |
| 331 | die "$filename: $!\n"; |
| 332 | } |
| 333 | } |
| 334 | die "channel data not present in $seq\n" if @realdata < $bytes; |
| 335 | my $rawdata = pack "C*", @realdata; |
| 336 | my $fh = $chan->{$filekey}; |
| 337 | print $fh $rawdata; |
| 338 | } |
| 339 | if (@realdata == $bytes and defined $chan->{$direction."data"}) { |
| 340 | my $rawdata = pack "C*", @realdata; |
| 341 | $chan->{$direction."data"}->($chan, $index, $direction, $rawdata); |
| 342 | } |
| 343 | }, |
| 344 | #define SSH2_MSG_CHANNEL_EOF 96 /* 0x60 */ |
| 345 | 'SSH2_MSG_CHANNEL_EOF' => sub { |
| 346 | my ($direction, $seq, $data) = @_; |
| 347 | my ($rid) = &parse("uu", $data); |
| 348 | $rid = ($direction eq "i" ? "c" : "s") . $rid; |
| 349 | my $index = $chan_by_id{$rid}; |
| 350 | my $chan = $channels[$index]; |
| 351 | printf "ch%d (%s)\n", $index, $chan->{'id'}; |
| 352 | }, |
| 353 | #define SSH2_MSG_CHANNEL_CLOSE 97 /* 0x61 */ |
| 354 | 'SSH2_MSG_CHANNEL_CLOSE' => sub { |
| 355 | my ($direction, $seq, $data) = @_; |
| 356 | my ($rid) = &parse("uu", $data); |
| 357 | $rid = ($direction eq "i" ? "c" : "s") . $rid; |
| 358 | my $index = $chan_by_id{$rid}; |
| 359 | my $chan = $channels[$index]; |
| 360 | $chan->{'state'} = ($chan->{'state'} eq "open" ? "halfclosed" : |
| 361 | $chan->{'state'} eq "halfclosed" ? "closed" : |
| 362 | "confused"); |
| 363 | if ($chan->{'state'} eq "closed") { |
| 364 | $chan->{'ifile'}->close if defined $chan->{'ifile'}; |
| 365 | $chan->{'ofile'}->close if defined $chan->{'ofile'}; |
| 366 | } |
| 367 | printf "ch%d (%s)\n", $index, $chan->{'id'}; |
| 368 | }, |
| 369 | #define SSH2_MSG_CHANNEL_REQUEST 98 /* 0x62 */ |
| 370 | 'SSH2_MSG_CHANNEL_REQUEST' => sub { |
| 371 | my ($direction, $seq, $data) = @_; |
| 372 | my ($rid, $type, $wantreply) = &parse("usb", $data); |
| 373 | $rid = ($direction eq "i" ? "c" : "s") . $rid; |
| 374 | my $index = $chan_by_id{$rid}; |
| 375 | my $chan = $channels[$index]; |
| 376 | printf "ch%d (%s) %s (%s)", |
| 377 | $index, $chan->{'id'}, $type, $wantreply eq "yes" ? "reply" : "noreply"; |
| 378 | push @{$chan->{'requests_'.$direction}}, [$seq, $type] |
| 379 | if $wantreply eq "yes"; |
| 380 | if ($type eq "pty-req") { |
| 381 | my ($term, $w, $h, $pw, $ph, $modes) = &parse("suuuus", $data); |
| 382 | printf " %s %sx%s", &str($term), $w, $h; |
| 383 | } elsif ($type eq "x11-req") { |
| 384 | my ($single, $xprot, $xcookie, $xscreen) = &parse("bssu", $data); |
| 385 | print " one-off" if $single eq "yes"; |
| 386 | printf " %s :%s", $xprot, $xscreen; |
| 387 | } elsif ($type eq "exec") { |
| 388 | my ($command) = &parse("s", $data); |
| 389 | printf " %s", &str($command); |
| 390 | } elsif ($type eq "subsystem") { |
| 391 | my ($subsys) = &parse("s", $data); |
| 392 | printf " %s", &str($subsys); |
| 393 | if ($subsys eq "sftp") { |
| 394 | &sftp_setup($index); |
| 395 | } |
| 396 | } elsif ($type eq "window-change") { |
| 397 | my ($w, $h, $pw, $ph) = &parse("uuuu", $data); |
| 398 | printf " %sx%s", $w, $h; |
| 399 | } elsif ($type eq "xon-xoff") { |
| 400 | my ($can) = &parse("b", $data); |
| 401 | printf " %s", $can; |
| 402 | } elsif ($type eq "signal") { |
| 403 | my ($sig) = &parse("s", $data); |
| 404 | printf " %s", &str($sig); |
| 405 | } elsif ($type eq "exit-status") { |
| 406 | my ($status) = &parse("u", $data); |
| 407 | printf " %s", $status; |
| 408 | } elsif ($type eq "exit-signal") { |
| 409 | my ($sig, $core, $error, $lang) = &parse("sbss", $data); |
| 410 | printf " %s", &str($sig); |
| 411 | print " (core dumped)" if $core eq "yes"; |
| 412 | } |
| 413 | print "\n"; |
| 414 | }, |
| 415 | #define SSH2_MSG_CHANNEL_SUCCESS 99 /* 0x63 */ |
| 416 | 'SSH2_MSG_CHANNEL_SUCCESS' => sub { |
| 417 | my ($direction, $seq, $data) = @_; |
| 418 | my ($rid) = &parse("uu", $data); |
| 419 | $rid = ($direction eq "i" ? "c" : "s") . $rid; |
| 420 | my $index = $chan_by_id{$rid}; |
| 421 | my $chan = $channels[$index]; |
| 422 | printf "ch%d (%s)", $index, $chan->{'id'}; |
| 423 | my $otherdir = ($direction eq "i" ? "o" : "i"); |
| 424 | my $request = shift @{$chan->{'requests_' . $otherdir}}; |
| 425 | if (defined $request) { |
| 426 | printf " to %s", $request->[0]; |
| 427 | } else { |
| 428 | print " (spurious?)"; |
| 429 | } |
| 430 | print "\n"; |
| 431 | }, |
| 432 | #define SSH2_MSG_CHANNEL_FAILURE 100 /* 0x64 */ |
| 433 | 'SSH2_MSG_CHANNEL_FAILURE' => sub { |
| 434 | my ($direction, $seq, $data) = @_; |
| 435 | my ($rid) = &parse("uu", $data); |
| 436 | $rid = ($direction eq "i" ? "c" : "s") . $rid; |
| 437 | my $index = $chan_by_id{$rid}; |
| 438 | my $chan = $channels[$index]; |
| 439 | printf "ch%d (%s)", $index, $chan->{'id'}; |
| 440 | my $otherdir = ($direction eq "i" ? "o" : "i"); |
| 441 | my $request = shift @{$chan->{'requests_' . $otherdir}}; |
| 442 | if (defined $request) { |
| 443 | printf " to %s", $request->[0]; |
| 444 | } else { |
| 445 | print " (spurious?)"; |
| 446 | } |
| 447 | print "\n"; |
| 448 | }, |
| 449 | #define SSH2_MSG_USERAUTH_GSSAPI_RESPONSE 60 |
| 450 | 'SSH2_MSG_USERAUTH_GSSAPI_RESPONSE' => sub { |
| 451 | my ($direction, $seq, $data) = @_; |
| 452 | print "\n"; |
| 453 | }, |
| 454 | #define SSH2_MSG_USERAUTH_GSSAPI_TOKEN 61 |
| 455 | 'SSH2_MSG_USERAUTH_GSSAPI_TOKEN' => sub { |
| 456 | my ($direction, $seq, $data) = @_; |
| 457 | print "\n"; |
| 458 | }, |
| 459 | #define SSH2_MSG_USERAUTH_GSSAPI_EXCHANGE_COMPLETE 63 |
| 460 | 'SSH2_MSG_USERAUTH_GSSAPI_EXCHANGE_COMPLETE' => sub { |
| 461 | my ($direction, $seq, $data) = @_; |
| 462 | print "\n"; |
| 463 | }, |
| 464 | #define SSH2_MSG_USERAUTH_GSSAPI_ERROR 64 |
| 465 | 'SSH2_MSG_USERAUTH_GSSAPI_ERROR' => sub { |
| 466 | my ($direction, $seq, $data) = @_; |
| 467 | print "\n"; |
| 468 | }, |
| 469 | #define SSH2_MSG_USERAUTH_GSSAPI_ERRTOK 65 |
| 470 | 'SSH2_MSG_USERAUTH_GSSAPI_ERRTOK' => sub { |
| 471 | my ($direction, $seq, $data) = @_; |
| 472 | print "\n"; |
| 473 | }, |
| 474 | #define SSH2_MSG_USERAUTH_GSSAPI_MIC 66 |
| 475 | 'SSH2_MSG_USERAUTH_GSSAPI_MIC' => sub { |
| 476 | my ($direction, $seq, $data) = @_; |
| 477 | print "\n"; |
| 478 | }, |
| 479 | ); |
| 480 | |
| 481 | my %sftp_packets = ( |
| 482 | #define SSH_FXP_INIT 1 /* 0x1 */ |
| 483 | 0x1 => sub { |
| 484 | my ($chan, $index, $direction, $id, $data) = @_; |
| 485 | my ($ver) = &parse("u", $data); |
| 486 | printf "SSH_FXP_INIT %d\n", $ver; |
| 487 | }, |
| 488 | #define SSH_FXP_VERSION 2 /* 0x2 */ |
| 489 | 0x2 => sub { |
| 490 | my ($chan, $index, $direction, $id, $data) = @_; |
| 491 | my ($ver) = &parse("u", $data); |
| 492 | printf "SSH_FXP_VERSION %d\n", $ver; |
| 493 | }, |
| 494 | #define SSH_FXP_OPEN 3 /* 0x3 */ |
| 495 | 0x3 => sub { |
| 496 | my ($chan, $index, $direction, $id, $data) = @_; |
| 497 | my ($reqid, $path, $pflags) = &parse("usu", $data); |
| 498 | &sftp_logreq($chan, $direction, $reqid, $id, "SSH_FXP_OPEN"); |
| 499 | printf " \"%s\" ", $path; |
| 500 | if ($pflags eq 0) { |
| 501 | print "0"; |
| 502 | } else { |
| 503 | my $sep = ""; |
| 504 | if ($pflags & 1) { $pflags ^= 1; print "${sep}READ"; $sep = "|"; } |
| 505 | if ($pflags & 2) { $pflags ^= 2; print "${sep}WRITE"; $sep = "|"; } |
| 506 | if ($pflags & 4) { $pflags ^= 4; print "${sep}APPEND"; $sep = "|"; } |
| 507 | if ($pflags & 8) { $pflags ^= 8; print "${sep}CREAT"; $sep = "|"; } |
| 508 | if ($pflags & 16) { $pflags ^= 16; print "${sep}TRUNC"; $sep = "|"; } |
| 509 | if ($pflags & 32) { $pflags ^= 32; print "${sep}EXCL"; $sep = "|"; } |
| 510 | if ($pflags) { print "${sep}${pflags}"; } |
| 511 | } |
| 512 | print "\n"; |
| 513 | }, |
| 514 | #define SSH_FXP_CLOSE 4 /* 0x4 */ |
| 515 | 0x4 => sub { |
| 516 | my ($chan, $index, $direction, $id, $data) = @_; |
| 517 | my ($reqid, $handle) = &parse("us", $data); |
| 518 | &sftp_logreq($chan, $direction, $reqid, $id, "SSH_FXP_CLOSE"); |
| 519 | printf " \"%s\"", &stringescape($handle); |
| 520 | print "\n"; |
| 521 | }, |
| 522 | #define SSH_FXP_READ 5 /* 0x5 */ |
| 523 | 0x5 => sub { |
| 524 | my ($chan, $index, $direction, $id, $data) = @_; |
| 525 | my ($reqid, $handle, $offset, $len) = &parse("usUu", $data); |
| 526 | &sftp_logreq($chan, $direction, $reqid, $id, "SSH_FXP_READ"); |
| 527 | printf " \"%s\" %d %d", &stringescape($handle), $offset, $len; |
| 528 | print "\n"; |
| 529 | }, |
| 530 | #define SSH_FXP_WRITE 6 /* 0x6 */ |
| 531 | 0x6 => sub { |
| 532 | my ($chan, $index, $direction, $id, $data) = @_; |
| 533 | my ($reqid, $handle, $offset, $wdata) = &parse("usUs", $data); |
| 534 | &sftp_logreq($chan, $direction, $reqid, $id, "SSH_FXP_WRITE"); |
| 535 | printf " \"%s\" %d [%d bytes]", &stringescape($handle), $offset, length $wdata; |
| 536 | print "\n"; |
| 537 | }, |
| 538 | #define SSH_FXP_LSTAT 7 /* 0x7 */ |
| 539 | 0x7 => sub { |
| 540 | my ($chan, $index, $direction, $id, $data) = @_; |
| 541 | my ($reqid, $path) = &parse("us", $data); |
| 542 | &sftp_logreq($chan, $direction, $reqid, $id, "SSH_FXP_LSTAT"); |
| 543 | printf " \"%s\"", $path; |
| 544 | print "\n"; |
| 545 | }, |
| 546 | #define SSH_FXP_FSTAT 8 /* 0x8 */ |
| 547 | 0x8 => sub { |
| 548 | my ($chan, $index, $direction, $id, $data) = @_; |
| 549 | my ($reqid, $handle) = &parse("us", $data); |
| 550 | &sftp_logreq($chan, $direction, $reqid, $id, "SSH_FXP_FSTAT"); |
| 551 | printf " \"%s\"", &stringescape($handle); |
| 552 | print "\n"; |
| 553 | }, |
| 554 | #define SSH_FXP_SETSTAT 9 /* 0x9 */ |
| 555 | 0x9 => sub { |
| 556 | my ($chan, $index, $direction, $id, $data) = @_; |
| 557 | my ($reqid, $path) = &parse("us", $data); |
| 558 | &sftp_logreq($chan, $direction, $reqid, $id, "SSH_FXP_SETSTAT"); |
| 559 | my $attrs = &sftp_parse_attrs($data); |
| 560 | printf " \"%s\" %s", $path, $attrs; |
| 561 | print "\n"; |
| 562 | }, |
| 563 | #define SSH_FXP_FSETSTAT 10 /* 0xa */ |
| 564 | 0xa => sub { |
| 565 | my ($chan, $index, $direction, $id, $data) = @_; |
| 566 | my ($reqid, $handle) = &parse("us", $data); |
| 567 | &sftp_logreq($chan, $direction, $reqid, $id, "SSH_FXP_FSETSTAT"); |
| 568 | my $attrs = &sftp_parse_attrs($data); |
| 569 | printf " \"%s\" %s", &stringescape($handle), $attrs; |
| 570 | print "\n"; |
| 571 | }, |
| 572 | #define SSH_FXP_OPENDIR 11 /* 0xb */ |
| 573 | 0xb => sub { |
| 574 | my ($chan, $index, $direction, $id, $data) = @_; |
| 575 | my ($reqid, $path) = &parse("us", $data); |
| 576 | &sftp_logreq($chan, $direction, $reqid, $id, "SSH_FXP_OPENDIR"); |
| 577 | printf " \"%s\"", $path; |
| 578 | print "\n"; |
| 579 | }, |
| 580 | #define SSH_FXP_READDIR 12 /* 0xc */ |
| 581 | 0xc => sub { |
| 582 | my ($chan, $index, $direction, $id, $data) = @_; |
| 583 | my ($reqid, $handle) = &parse("us", $data); |
| 584 | &sftp_logreq($chan, $direction, $reqid, $id, "SSH_FXP_READDIR"); |
| 585 | printf " \"%s\"", &stringescape($handle); |
| 586 | print "\n"; |
| 587 | }, |
| 588 | #define SSH_FXP_REMOVE 13 /* 0xd */ |
| 589 | 0xd => sub { |
| 590 | my ($chan, $index, $direction, $id, $data) = @_; |
| 591 | my ($reqid, $path) = &parse("us", $data); |
| 592 | &sftp_logreq($chan, $direction, $reqid, $id, "SSH_FXP_REMOVE"); |
| 593 | printf " \"%s\"", $path; |
| 594 | print "\n"; |
| 595 | }, |
| 596 | #define SSH_FXP_MKDIR 14 /* 0xe */ |
| 597 | 0xe => sub { |
| 598 | my ($chan, $index, $direction, $id, $data) = @_; |
| 599 | my ($reqid, $path) = &parse("us", $data); |
| 600 | &sftp_logreq($chan, $direction, $reqid, $id, "SSH_FXP_MKDIR"); |
| 601 | printf " \"%s\"", $path; |
| 602 | print "\n"; |
| 603 | }, |
| 604 | #define SSH_FXP_RMDIR 15 /* 0xf */ |
| 605 | 0xf => sub { |
| 606 | my ($chan, $index, $direction, $id, $data) = @_; |
| 607 | my ($reqid, $path) = &parse("us", $data); |
| 608 | &sftp_logreq($chan, $direction, $reqid, $id, "SSH_FXP_RMDIR"); |
| 609 | printf " \"%s\"", $path; |
| 610 | print "\n"; |
| 611 | }, |
| 612 | #define SSH_FXP_REALPATH 16 /* 0x10 */ |
| 613 | 0x10 => sub { |
| 614 | my ($chan, $index, $direction, $id, $data) = @_; |
| 615 | my ($reqid, $path) = &parse("us", $data); |
| 616 | &sftp_logreq($chan, $direction, $reqid, $id, "SSH_FXP_REALPATH"); |
| 617 | printf " \"%s\"", $path; |
| 618 | print "\n"; |
| 619 | }, |
| 620 | #define SSH_FXP_STAT 17 /* 0x11 */ |
| 621 | 0x11 => sub { |
| 622 | my ($chan, $index, $direction, $id, $data) = @_; |
| 623 | my ($reqid, $path) = &parse("us", $data); |
| 624 | &sftp_logreq($chan, $direction, $reqid, $id, "SSH_FXP_STAT"); |
| 625 | printf " \"%s\"", $path; |
| 626 | print "\n"; |
| 627 | }, |
| 628 | #define SSH_FXP_RENAME 18 /* 0x12 */ |
| 629 | 0x12 => sub { |
| 630 | my ($chan, $index, $direction, $id, $data) = @_; |
| 631 | my ($reqid, $srcpath, $dstpath) = &parse("uss", $data); |
| 632 | &sftp_logreq($chan, $direction, $reqid, $id, "SSH_FXP_RENAME"); |
| 633 | printf " \"%s\" \"%s\"", $srcpath, $dstpath; |
| 634 | print "\n"; |
| 635 | }, |
| 636 | #define SSH_FXP_STATUS 101 /* 0x65 */ |
| 637 | 0x65 => sub { |
| 638 | my ($chan, $index, $direction, $id, $data) = @_; |
| 639 | my ($reqid, $status) = &parse("uu", $data); |
| 640 | &sftp_logreply($chan, $direction, $reqid, $id, "SSH_FXP_STATUS"); |
| 641 | print " "; |
| 642 | if ($status eq "0") { print "SSH_FX_OK"; } |
| 643 | elsif ($status eq "1") { print "SSH_FX_EOF"; } |
| 644 | elsif ($status eq "2") { print "SSH_FX_NO_SUCH_FILE"; } |
| 645 | elsif ($status eq "3") { print "SSH_FX_PERMISSION_DENIED"; } |
| 646 | elsif ($status eq "4") { print "SSH_FX_FAILURE"; } |
| 647 | elsif ($status eq "5") { print "SSH_FX_BAD_MESSAGE"; } |
| 648 | elsif ($status eq "6") { print "SSH_FX_NO_CONNECTION"; } |
| 649 | elsif ($status eq "7") { print "SSH_FX_CONNECTION_LOST"; } |
| 650 | elsif ($status eq "8") { print "SSH_FX_OP_UNSUPPORTED"; } |
| 651 | else { printf "[unknown status %d]", $status; } |
| 652 | print "\n"; |
| 653 | }, |
| 654 | #define SSH_FXP_HANDLE 102 /* 0x66 */ |
| 655 | 0x66 => sub { |
| 656 | my ($chan, $index, $direction, $id, $data) = @_; |
| 657 | my ($reqid, $handle) = &parse("us", $data); |
| 658 | &sftp_logreply($chan, $direction, $reqid, $id, "SSH_FXP_HANDLE"); |
| 659 | printf " \"%s\"", &stringescape($handle); |
| 660 | print "\n"; |
| 661 | }, |
| 662 | #define SSH_FXP_DATA 103 /* 0x67 */ |
| 663 | 0x67 => sub { |
| 664 | my ($chan, $index, $direction, $id, $data) = @_; |
| 665 | my ($reqid, $retdata) = &parse("us", $data); |
| 666 | &sftp_logreply($chan, $direction, $reqid, $id, "SSH_FXP_DATA"); |
| 667 | printf " [%d bytes]", length $retdata; |
| 668 | print "\n"; |
| 669 | }, |
| 670 | #define SSH_FXP_NAME 104 /* 0x68 */ |
| 671 | 0x68 => sub { |
| 672 | my ($chan, $index, $direction, $id, $data) = @_; |
| 673 | my ($reqid, $count) = &parse("uu", $data); |
| 674 | &sftp_logreply($chan, $direction, $reqid, $id, "SSH_FXP_NAME"); |
| 675 | for my $i (1..$count) { |
| 676 | my ($name, $longname) = &parse("ss", $data); |
| 677 | my $attrs = &sftp_parse_attrs($data); |
| 678 | print " [name=\"$name\", longname=\"$longname\", attrs=$attrs]"; |
| 679 | } |
| 680 | print "\n"; |
| 681 | }, |
| 682 | #define SSH_FXP_ATTRS 105 /* 0x69 */ |
| 683 | 0x69 => sub { |
| 684 | my ($chan, $index, $direction, $id, $data) = @_; |
| 685 | my ($reqid) = &parse("u", $data); |
| 686 | &sftp_logreply($chan, $direction, $reqid, $id, "SSH_FXP_ATTRS"); |
| 687 | my $attrs = &sftp_parse_attrs($data); |
| 688 | printf " %s", $attrs; |
| 689 | print "\n"; |
| 690 | }, |
| 691 | #define SSH_FXP_EXTENDED 200 /* 0xc8 */ |
| 692 | 0xc8 => sub { |
| 693 | my ($chan, $index, $direction, $id, $data) = @_; |
| 694 | my ($reqid, $type) = &parse("us", $data); |
| 695 | &sftp_logreq($chan, $direction, $reqid, $id, "SSH_FXP_EXTENDED"); |
| 696 | printf " \"%s\"", $type; |
| 697 | print "\n"; |
| 698 | }, |
| 699 | #define SSH_FXP_EXTENDED_REPLY 201 /* 0xc9 */ |
| 700 | 0xc9 => sub { |
| 701 | my ($chan, $index, $direction, $id, $data) = @_; |
| 702 | my ($reqid) = &parse("u", $data); |
| 703 | print "\n"; |
| 704 | &sftp_logreply($chan, $direction, $reqid,$id,"SSH_FXP_EXTENDED_REPLY"); |
| 705 | }, |
| 706 | ); |
| 707 | |
| 708 | my ($direction, $seq, $ourseq, $type, $data, $recording); |
| 709 | my %ourseqs = ('i'=>0, 'o'=>0); |
| 710 | |
| 711 | $recording = 0; |
| 712 | while (<>) { |
| 713 | if ($recording) { |
| 714 | if (/^ [0-9a-fA-F]{8} ((?:[0-9a-fA-F]{2} )*[0-9a-fA-F]{2})/) { |
| 715 | push @$data, map { $_ eq "XX" ? -1 : hex $_ } split / /, $1; |
| 716 | } else { |
| 717 | $recording = 0; |
| 718 | my $fullseq = "$direction$ourseq"; |
| 719 | print "$fullseq: $type "; |
| 720 | if (defined $packets{$type}) { |
| 721 | $packets{$type}->($direction, $fullseq, $data); |
| 722 | } else { |
| 723 | printf "raw %s\n", join "", map { sprintf "%02x", $_ } @$data; |
| 724 | } |
| 725 | } |
| 726 | } |
| 727 | if (/^(Incoming|Outgoing) packet #0x([0-9a-fA-F]+), type \d+ \/ 0x[0-9a-fA-F]+ \((.*)\)/) { |
| 728 | $direction = ($1 eq "Incoming" ? 'i' : 'o'); |
| 729 | # $seq is the sequence number quoted in the log file. $ourseq |
| 730 | # is our own count of the sequence number, which differs in |
| 731 | # that it shouldn't wrap at 2^32, should anyone manage to run |
| 732 | # this script over such a huge log file. |
| 733 | $seq = hex $2; |
| 734 | $ourseq = $ourseqs{$direction}++; |
| 735 | $type = $3; |
| 736 | $data = []; |
| 737 | $recording = 1; |
| 738 | } |
| 739 | } |
| 740 | |
| 741 | if ($dumpchannels) { |
| 742 | my %stateorder = ('closed'=>0, 'rejected'=>1, |
| 743 | 'halfclosed'=>2, 'open'=>3, 'halfopen'=>4); |
| 744 | for my $index (0..$#channels) { |
| 745 | my $chan = $channels[$index]; |
| 746 | my $so = $stateorder{$chan->{'state'}}; |
| 747 | $so = 1000 unless defined $so; # any state I've missed above comes last |
| 748 | $chan->{'index'} = sprintf "ch%d", $index; |
| 749 | $chan->{'order'} = sprintf "%08d %08d", $so, $index; |
| 750 | } |
| 751 | my @sortedchannels = sort { $a->{'order'} cmp $b->{'order'} } @channels; |
| 752 | for my $chan (@sortedchannels) { |
| 753 | printf "%s (%s): %s\n", $chan->{'index'}, $chan->{'id'}, $chan->{'state'}; |
| 754 | } |
| 755 | } |
| 756 | |
| 757 | sub parseone { |
| 758 | my ($type, $data) = @_; |
| 759 | if ($type eq "u") { # uint32 |
| 760 | my @bytes = splice @$data, 0, 4; |
| 761 | return "<missing>" if @bytes < 4 or grep { $_<0 } @bytes; |
| 762 | return unpack "N", pack "C*", @bytes; |
| 763 | } elsif ($type eq "U") { # uint64 |
| 764 | my @bytes = splice @$data, 0, 8; |
| 765 | return "<missing>" if @bytes < 8 or grep { $_<0 } @bytes; |
| 766 | my @words = unpack "NN", pack "C*", @bytes; |
| 767 | return ($words[0] << 32) + $words[1]; |
| 768 | } elsif ($type eq "b") { # boolean |
| 769 | my $byte = shift @$data; |
| 770 | return "<missing>" if !defined $byte or $byte < 0; |
| 771 | return $byte ? "yes" : "no"; |
| 772 | } elsif ($type eq "B") { # byte |
| 773 | my $byte = shift @$data; |
| 774 | return "<missing>" if !defined $byte or $byte < 0; |
| 775 | return $byte; |
| 776 | } elsif ($type eq "s" or $type eq "m") { # string, mpint |
| 777 | my @bytes = splice @$data, 0, 4; |
| 778 | return "<missing>" if @bytes < 4 or grep { $_<0 } @bytes; |
| 779 | my $len = unpack "N", pack "C*", @bytes; |
| 780 | @bytes = splice @$data, 0, $len; |
| 781 | return "<missing>" if @bytes < $len or grep { $_<0 } @bytes; |
| 782 | if ($type eq "mpint") { |
| 783 | my $str = ""; |
| 784 | if ($bytes[0] >= 128) { |
| 785 | # Take two's complement. |
| 786 | @bytes = map { 0xFF ^ $_ } @bytes; |
| 787 | for my $i (reverse 0..$#bytes) { |
| 788 | if ($bytes[$i] < 0xFF) { |
| 789 | $bytes[$i]++; |
| 790 | last; |
| 791 | } else { |
| 792 | $bytes[$i] = 0; |
| 793 | } |
| 794 | } |
| 795 | $str = "-"; |
| 796 | } |
| 797 | $str .= "0x" . join "", map { sprintf "%02x", $_ } @bytes; |
| 798 | return $str; |
| 799 | } else { |
| 800 | return pack "C*", @bytes; |
| 801 | } |
| 802 | } |
| 803 | } |
| 804 | |
| 805 | sub parse { |
| 806 | my ($template, $data) = @_; |
| 807 | return map { &parseone($_, $data) } split //, $template; |
| 808 | } |
| 809 | |
| 810 | sub str { |
| 811 | # Quote as a string. If I get enthusiastic I might arrange for |
| 812 | # strange characters inside the string to be quoted. |
| 813 | my $str = shift @_; |
| 814 | return "'$str'"; |
| 815 | } |
| 816 | |
| 817 | sub sftp_setup { |
| 818 | my $index = shift @_; |
| 819 | my $chan = $channels[$index]; |
| 820 | $chan->{'obuf'} = $chan->{'ibuf'} = ''; |
| 821 | $chan->{'ocnt'} = $chan->{'icnt'} = 0; |
| 822 | $chan->{'odata'} = $chan->{'idata'} = \&sftp_data; |
| 823 | $chan->{'sftpreqs'} = {}; |
| 824 | } |
| 825 | |
| 826 | sub sftp_data { |
| 827 | my ($chan, $index, $direction, $data) = @_; |
| 828 | my $buf = \$chan->{$direction."buf"}; |
| 829 | my $cnt = \$chan->{$direction."cnt"}; |
| 830 | $$buf .= $data; |
| 831 | while (length $$buf >= 4) { |
| 832 | my $msglen = unpack "N", $$buf; |
| 833 | last if length $$buf < 4 + $msglen; |
| 834 | my $msg = substr $$buf, 4, $msglen; |
| 835 | $$buf = substr $$buf, 4 + $msglen; |
| 836 | $msg = [unpack "C*", $msg]; |
| 837 | my $type = shift @$msg; |
| 838 | my $id = sprintf "ch%d_sftp_%s%d", $index, $direction, ${$cnt}++; |
| 839 | print "$id: "; |
| 840 | if (defined $sftp_packets{$type}) { |
| 841 | $sftp_packets{$type}->($chan, $index, $direction, $id, $msg); |
| 842 | } else { |
| 843 | printf "unknown SFTP packet type %d\n", $type; |
| 844 | } |
| 845 | } |
| 846 | } |
| 847 | |
| 848 | sub sftp_logreq { |
| 849 | my ($chan, $direction, $reqid, $id, $name) = @_; |
| 850 | print "$name"; |
| 851 | if ($direction eq "o") { # requests coming _in_ are too weird to track |
| 852 | $chan->{'sftpreqs'}->{$reqid} = $id; |
| 853 | } |
| 854 | } |
| 855 | |
| 856 | sub sftp_logreply { |
| 857 | my ($chan, $direction, $reqid, $id, $name) = @_; |
| 858 | print "$name"; |
| 859 | if ($direction eq "i") { # replies going _out_ are too weird to track |
| 860 | if (defined $chan->{'sftpreqs'}->{$reqid}) { |
| 861 | print " to ", $chan->{'sftpreqs'}->{$reqid}; |
| 862 | $chan->{'sftpreqs'}->{$reqid} = undef; |
| 863 | } |
| 864 | } |
| 865 | } |
| 866 | |
| 867 | sub sftp_parse_attrs { |
| 868 | my ($data) = @_; |
| 869 | my ($flags) = &parse("u", $data); |
| 870 | return $flags if $flags eq "<missing>"; |
| 871 | my $out = "{"; |
| 872 | my $sep = ""; |
| 873 | if ($flags & 0x00000001) { # SSH_FILEXFER_ATTR_SIZE |
| 874 | $out .= $sep . sprintf "size=%d", &parse("U", $data); |
| 875 | $sep = ", "; |
| 876 | } |
| 877 | if ($flags & 0x00000002) { # SSH_FILEXFER_ATTR_UIDGID |
| 878 | $out .= $sep . sprintf "uid=%d", &parse("u", $data); |
| 879 | $out .= $sep . sprintf "gid=%d", &parse("u", $data); |
| 880 | $sep = ", "; |
| 881 | } |
| 882 | if ($flags & 0x00000004) { # SSH_FILEXFER_ATTR_PERMISSIONS |
| 883 | $out .= $sep . sprintf "perms=%#o", &parse("u", $data); |
| 884 | $sep = ", "; |
| 885 | } |
| 886 | if ($flags & 0x00000008) { # SSH_FILEXFER_ATTR_ACMODTIME |
| 887 | $out .= $sep . sprintf "atime=%d", &parse("u", $data); |
| 888 | $out .= $sep . sprintf "mtime=%d", &parse("u", $data); |
| 889 | $sep = ", "; |
| 890 | } |
| 891 | if ($flags & 0x80000000) { # SSH_FILEXFER_ATTR_EXTENDED |
| 892 | my $extcount = &parse("u", $data); |
| 893 | while ($extcount-- > 0) { |
| 894 | $out .= $sep . sprintf "\"%s\"=\"%s\"", &parse("ss", $data); |
| 895 | $sep = ", "; |
| 896 | } |
| 897 | } |
| 898 | $out .= "}"; |
| 899 | return $out; |
| 900 | } |
| 901 | |
| 902 | sub stringescape { |
| 903 | my ($str) = @_; |
| 904 | $str =~ s!\\!\\\\!g; |
| 905 | $str =~ s![^ -~]!sprintf "\\x%02X", ord $&!eg; |
| 906 | return $str; |
| 907 | } |