| … | |
… | |
| 11 | my $ni = $fcp->txn_node_info->result; |
11 | my $ni = $fcp->txn_node_info->result; |
| 12 | my $ni = $fcp->node_info; |
12 | my $ni = $fcp->node_info; |
| 13 | |
13 | |
| 14 | =head1 DESCRIPTION |
14 | =head1 DESCRIPTION |
| 15 | |
15 | |
|
|
16 | This module implements the first version of the freenet client protocol, |
|
|
17 | for use with freenet versions 0.5. For freenet protocol version 2.0 |
|
|
18 | support (as used by freenet 0.7), see the L<AnyEvent::FCP> module. |
|
|
19 | |
| 16 | See L<http://freenet.sourceforge.net/index.php?page=fcp> for a description |
20 | See L<http://freenet.sourceforge.net/index.php?page=fcp> for a description |
| 17 | of what the messages do. I am too lazy to document all this here. |
21 | of what the messages do. |
| 18 | |
22 | |
| 19 | =head1 WARNING |
23 | The module uses L<AnyEvent> to find a suitable Event module. |
| 20 | |
|
|
| 21 | This module is alpha. While it probably won't destroy (much :) of your |
|
|
| 22 | data, it currently falls short of what it should provide (intelligent uri |
|
|
| 23 | following, splitfile downloads, healing...) |
|
|
| 24 | |
24 | |
| 25 | =head2 IMPORT TAGS |
25 | =head2 IMPORT TAGS |
| 26 | |
26 | |
| 27 | Nothing much can be "imported" from this module right now. There are, |
27 | Nothing much can be "imported" from this module right now. |
| 28 | however, certain "import tags" that can be used to select the event model |
|
|
| 29 | to be used. |
|
|
| 30 | |
|
|
| 31 | Event models are implemented as modules under the C<Net::FCP::Event::xyz> |
|
|
| 32 | class, where C<xyz> is the event model to use. The default is C<Event> (or |
|
|
| 33 | later C<Auto>). |
|
|
| 34 | |
|
|
| 35 | The import tag to use is named C<event=xyz>, e.g. C<event=Event>, |
|
|
| 36 | C<event=Glib> etc. |
|
|
| 37 | |
|
|
| 38 | You should specify the event module to use only in the main program. |
|
|
| 39 | |
|
|
| 40 | If no event model has been specified, FCP tries to autodetect it on first |
|
|
| 41 | use (e.g. first transaction), in this order: Coro, Event, Glib, Tk. |
|
|
| 42 | |
28 | |
| 43 | =head2 FREENET BASICS |
29 | =head2 FREENET BASICS |
| 44 | |
30 | |
| 45 | Ok, this section will not explain any freenet basics to you, just some |
31 | Ok, this section will not explain any freenet basics to you, just some |
| 46 | problems I found that you might want to avoid: |
32 | problems I found that you might want to avoid: |
| … | |
… | |
| 72 | |
58 | |
| 73 | package Net::FCP; |
59 | package Net::FCP; |
| 74 | |
60 | |
| 75 | use Carp; |
61 | use Carp; |
| 76 | |
62 | |
| 77 | $VERSION = 0.08; |
63 | $VERSION = '1.2'; |
| 78 | |
64 | |
| 79 | no warnings; |
65 | no warnings; |
| 80 | |
66 | |
| 81 | our $EVENT = Net::FCP::Event::Auto::; |
67 | use AnyEvent; |
| 82 | |
68 | |
| 83 | sub import { |
69 | use Net::FCP::Metadata; |
| 84 | shift; |
70 | use Net::FCP::Util qw(tolc touc xeh); |
| 85 | |
71 | |
| 86 | for (@_) { |
|
|
| 87 | if (/^event=(\w+)$/) { |
|
|
| 88 | $EVENT = "Net::FCP::Event::$1"; |
|
|
| 89 | eval "require $EVENT"; |
|
|
| 90 | } |
|
|
| 91 | } |
|
|
| 92 | die $@ if $@; |
|
|
| 93 | } |
|
|
| 94 | |
|
|
| 95 | sub touc($) { |
|
|
| 96 | local $_ = shift; |
|
|
| 97 | 1 while s/((?:^|_)(?:svk|chk|uri)(?:_|$))/\U$1/; |
|
|
| 98 | s/(?:^|_)(.)/\U$1/g; |
|
|
| 99 | $_; |
|
|
| 100 | } |
|
|
| 101 | |
|
|
| 102 | sub tolc($) { |
|
|
| 103 | local $_ = shift; |
|
|
| 104 | s/(?<=[a-z])(?=[A-Z])/_/g; |
|
|
| 105 | lc $_; |
|
|
| 106 | } |
|
|
| 107 | |
|
|
| 108 | =item $meta = Net::FCP::parse_metadata $string |
|
|
| 109 | |
|
|
| 110 | Parse a metadata string and return it. |
|
|
| 111 | |
|
|
| 112 | The metadata will be a hashref with key C<version> (containing |
|
|
| 113 | the mandatory version header entries). |
|
|
| 114 | |
|
|
| 115 | All other headers are represented by arrayrefs (they can be repeated). |
|
|
| 116 | |
|
|
| 117 | Since this is confusing, here is a rather verbose example of a parsed |
|
|
| 118 | manifest: |
|
|
| 119 | |
|
|
| 120 | ( |
|
|
| 121 | version => { revision => 1 }, |
|
|
| 122 | document => [ |
|
|
| 123 | { |
|
|
| 124 | info => { format" => "image/jpeg" }, |
|
|
| 125 | name => "background.jpg", |
|
|
| 126 | redirect => { target => "freenet:CHK\@ZcagI,ra726bSw" }, |
|
|
| 127 | }, |
|
|
| 128 | { |
|
|
| 129 | info => { format" => "text/html" }, |
|
|
| 130 | name => ".next", |
|
|
| 131 | redirect => { target => "freenet:SSK\@ilUPAgM/TFEE/3" }, |
|
|
| 132 | }, |
|
|
| 133 | { |
|
|
| 134 | info => { format" => "text/html" }, |
|
|
| 135 | redirect => { target => "freenet:CHK\@8M8Po8ucwI,8xA" }, |
|
|
| 136 | } |
|
|
| 137 | ] |
|
|
| 138 | ) |
|
|
| 139 | |
|
|
| 140 | =cut |
|
|
| 141 | |
|
|
| 142 | sub parse_metadata { |
|
|
| 143 | my $meta; |
|
|
| 144 | |
|
|
| 145 | my $data = shift; |
|
|
| 146 | if ($data =~ /^Version\015?\012/gc) { |
|
|
| 147 | my $hdr = $meta->{version} = {}; |
|
|
| 148 | |
|
|
| 149 | for (;;) { |
|
|
| 150 | while ($data =~ /\G([^=\015\012]+)=([^\015\012]*)\015?\012/gc) { |
|
|
| 151 | my ($k, $v) = ($1, $2); |
|
|
| 152 | my @p = split /\./, tolc $k, 3; |
|
|
| 153 | |
|
|
| 154 | $hdr->{$p[0]} = $v if @p == 1; # lamest code I ever wrote |
|
|
| 155 | $hdr->{$p[0]}{$p[1]} = $v if @p == 2; |
|
|
| 156 | $hdr->{$p[0]}{$p[1]}{$p[2]} = $v if @p == 3; |
|
|
| 157 | die "FATAL: 4+ dot metadata" if @p >= 4; |
|
|
| 158 | } |
|
|
| 159 | |
|
|
| 160 | if ($data =~ /\GEndPart\015?\012/gc) { |
|
|
| 161 | # nop |
|
|
| 162 | } elsif ($data =~ /\GEnd(\015?\012|$)/gc) { |
|
|
| 163 | last; |
|
|
| 164 | } elsif ($data =~ /\G([A-Za-z0-9.\-]+)\015?\012/gcs) { |
|
|
| 165 | push @{$meta->{tolc $1}}, $hdr = {}; |
|
|
| 166 | } elsif ($data =~ /\G(.*)/gcs) { |
|
|
| 167 | print STDERR "metadata format error ($1), please report this string: <<$data>>"; |
|
|
| 168 | die "metadata format error"; |
|
|
| 169 | } |
|
|
| 170 | } |
|
|
| 171 | } |
|
|
| 172 | |
|
|
| 173 | #$meta->{tail} = substr $data, pos $data; |
|
|
| 174 | |
|
|
| 175 | $meta; |
|
|
| 176 | } |
|
|
| 177 | |
|
|
| 178 | =item $fcp = new Net::FCP [host => $host][, port => $port] |
72 | =item $fcp = new Net::FCP [host => $host][, port => $port][, progress => \&cb] |
| 179 | |
73 | |
| 180 | Create a new virtual FCP connection to the given host and port (default |
74 | Create a new virtual FCP connection to the given host and port (default |
| 181 | 127.0.0.1:8481, or the environment variables C<FREDHOST> and C<FREDPORT>). |
75 | 127.0.0.1:8481, or the environment variables C<FREDHOST> and C<FREDPORT>). |
| 182 | |
76 | |
| 183 | Connections are virtual because no persistent physical connection is |
77 | Connections are virtual because no persistent physical connection is |
| 184 | established. |
78 | established. |
| 185 | |
79 | |
| 186 | =begin comment |
80 | You can install a progress callback that is being called with the Net::FCP |
|
|
81 | object, a txn object, the type of the transaction and the attributes. Use |
|
|
82 | it like this: |
| 187 | |
83 | |
| 188 | However, the existance of the node is checked by executing a |
84 | sub progress_cb { |
| 189 | C<ClientHello> transaction. |
85 | my ($self, $txn, $type, $attr) = @_; |
| 190 | |
86 | |
| 191 | =end |
87 | warn "progress<$txn,$type," . (join ":", %$attr) . ">\n"; |
|
|
88 | } |
| 192 | |
89 | |
| 193 | =cut |
90 | =cut |
| 194 | |
91 | |
| 195 | sub new { |
92 | sub new { |
| 196 | my $class = shift; |
93 | my $class = shift; |
| 197 | my $self = bless { @_ }, $class; |
94 | my $self = bless { @_ }, $class; |
| 198 | |
95 | |
| 199 | $self->{host} ||= $ENV{FREDHOST} || "127.0.0.1"; |
96 | $self->{host} ||= $ENV{FREDHOST} || "127.0.0.1"; |
| 200 | $self->{port} ||= $ENV{FREDPORT} || 8481; |
97 | $self->{port} ||= $ENV{FREDPORT} || 8481; |
| 201 | |
98 | |
| 202 | #$self->{nodehello} = $self->client_hello |
|
|
| 203 | # or croak "unable to get nodehello from node\n"; |
|
|
| 204 | |
|
|
| 205 | $self; |
99 | $self; |
| 206 | } |
100 | } |
| 207 | |
101 | |
| 208 | sub progress { |
102 | sub progress { |
| 209 | my ($self, $txn, $type, $attr) = @_; |
103 | my ($self, $txn, $type, $attr) = @_; |
| 210 | #warn "progress<$txn,$type," . (join ":", %$attr) . ">\n"; |
|
|
| 211 | } |
|
|
| 212 | |
104 | |
|
|
105 | $self->{progress}->($self, $txn, $type, $attr) |
|
|
106 | if $self->{progress}; |
|
|
107 | } |
|
|
108 | |
| 213 | =item $txn = $fcp->txn(type => attr => val,...) |
109 | =item $txn = $fcp->txn (type => attr => val,...) |
| 214 | |
110 | |
| 215 | The low-level interface to transactions. Don't use it. |
111 | The low-level interface to transactions. Don't use it unless you have |
| 216 | |
112 | "special needs". Instead, use predefiend transactions like this: |
| 217 | Here are some examples of using transactions: |
|
|
| 218 | |
113 | |
| 219 | The blocking case, no (visible) transactions involved: |
114 | The blocking case, no (visible) transactions involved: |
| 220 | |
115 | |
| 221 | my $nodehello = $fcp->client_hello; |
116 | my $nodehello = $fcp->client_hello; |
| 222 | |
117 | |
| … | |
… | |
| 241 | sub txn { |
136 | sub txn { |
| 242 | my ($self, $type, %attr) = @_; |
137 | my ($self, $type, %attr) = @_; |
| 243 | |
138 | |
| 244 | $type = touc $type; |
139 | $type = touc $type; |
| 245 | |
140 | |
| 246 | my $txn = "Net::FCP::Txn::$type"->new(fcp => $self, type => tolc $type, attr => \%attr); |
141 | my $txn = "Net::FCP::Txn::$type"->new (fcp => $self, type => tolc $type, attr => \%attr); |
| 247 | |
142 | |
| 248 | $txn; |
143 | $txn; |
| 249 | } |
144 | } |
| 250 | |
145 | |
| 251 | { # transactions |
146 | { # transactions |
| … | |
… | |
| 312 | my ($self) = @_; |
207 | my ($self) = @_; |
| 313 | |
208 | |
| 314 | $self->txn ("client_info"); |
209 | $self->txn ("client_info"); |
| 315 | }); |
210 | }); |
| 316 | |
211 | |
| 317 | =item $txn = $fcp->txn_generate_chk ($metadata, $data) |
212 | =item $txn = $fcp->txn_generate_chk ($metadata, $data[, $cipher]) |
| 318 | |
213 | |
| 319 | =item $uri = $fcp->generate_chk ($metadata, $data) |
214 | =item $uri = $fcp->generate_chk ($metadata, $data[, $cipher]) |
| 320 | |
215 | |
| 321 | Creates a new CHK, given the metadata and data. UNTESTED. |
216 | Calculates a CHK, given the metadata and data. C<$cipher> is either |
|
|
217 | C<Rijndael> or C<Twofish>, with the latter being the default. |
| 322 | |
218 | |
| 323 | =cut |
219 | =cut |
| 324 | |
220 | |
| 325 | $txn->(generate_chk => sub { |
221 | $txn->(generate_chk => sub { |
| 326 | my ($self, $metadata, $data) = @_; |
222 | my ($self, $metadata, $data, $cipher) = @_; |
| 327 | |
223 | |
| 328 | $self->txn (generate_chk => data => "$metadata$data", metadata_length => length $metadata); |
224 | $metadata = Net::FCP::Metadata::build_metadata $metadata; |
|
|
225 | |
|
|
226 | $self->txn (generate_chk => |
|
|
227 | data => "$metadata$data", |
|
|
228 | metadata_length => xeh length $metadata, |
|
|
229 | cipher => $cipher || "Twofish"); |
| 329 | }); |
230 | }); |
| 330 | |
231 | |
| 331 | =item $txn = $fcp->txn_generate_svk_pair |
232 | =item $txn = $fcp->txn_generate_svk_pair |
| 332 | |
233 | |
| 333 | =item ($public, $private) = @{ $fcp->generate_svk_pair } |
234 | =item ($public, $private, $crypto) = @{ $fcp->generate_svk_pair } |
| 334 | |
235 | |
| 335 | Creates a new SVK pair. Returns an arrayref. |
236 | Creates a new SVK pair. Returns an arrayref with the public key, the |
|
|
237 | private key and a crypto key, which is just additional entropy. |
| 336 | |
238 | |
| 337 | [ |
239 | [ |
| 338 | "hKs0-WDQA4pVZyMPKNFsK1zapWY", |
240 | "acLx4dux9fvvABH15Gk6~d3I-yw", |
| 339 | "ZnmvMITaTXBMFGl4~jrjuyWxOWg" |
241 | "cPoDkDMXDGSMM32plaPZDhJDxSs", |
|
|
242 | "BH7LXCov0w51-y9i~BoB3g", |
| 340 | ] |
243 | ] |
|
|
244 | |
|
|
245 | A private key (for inserting) can be constructed like this: |
|
|
246 | |
|
|
247 | SSK@<private_key>,<crypto_key>/<name> |
|
|
248 | |
|
|
249 | It can be used to insert data. The corresponding public key looks like this: |
|
|
250 | |
|
|
251 | SSK@<public_key>PAgM,<crypto_key>/<name> |
|
|
252 | |
|
|
253 | Watch out for the C<PAgM>-part! |
| 341 | |
254 | |
| 342 | =cut |
255 | =cut |
| 343 | |
256 | |
| 344 | $txn->(generate_svk_pair => sub { |
257 | $txn->(generate_svk_pair => sub { |
| 345 | my ($self) = @_; |
258 | my ($self) = @_; |
| 346 | |
259 | |
| 347 | $self->txn ("generate_svk_pair"); |
260 | $self->txn ("generate_svk_pair"); |
| 348 | }); |
261 | }); |
| 349 | |
262 | |
| 350 | =item $txn = $fcp->txn_insert_private_key ($private) |
263 | =item $txn = $fcp->txn_invert_private_key ($private) |
| 351 | |
264 | |
| 352 | =item $public = $fcp->insert_private_key ($private) |
265 | =item $public = $fcp->invert_private_key ($private) |
| 353 | |
266 | |
| 354 | Inserts a private key. $private can be either an insert URI (must start |
267 | Inverts a private key (returns the public key). C<$private> can be either |
| 355 | with C<freenet:SSK@>) or a raw private key (i.e. the private value you get |
268 | an insert URI (must start with C<freenet:SSK@>) or a raw private key (i.e. |
| 356 | back from C<generate_svk_pair>). |
269 | the private value you get back from C<generate_svk_pair>). |
| 357 | |
270 | |
| 358 | Returns the public key. |
271 | Returns the public key. |
| 359 | |
272 | |
| 360 | UNTESTED. |
|
|
| 361 | |
|
|
| 362 | =cut |
273 | =cut |
| 363 | |
274 | |
| 364 | $txn->(insert_private_key => sub { |
275 | $txn->(invert_private_key => sub { |
| 365 | my ($self, $privkey) = @_; |
276 | my ($self, $privkey) = @_; |
| 366 | |
277 | |
| 367 | $self->txn (invert_private_key => private => $privkey); |
278 | $self->txn (invert_private_key => private => $privkey); |
| 368 | }); |
279 | }); |
| 369 | |
280 | |
| … | |
… | |
| 372 | =item $length = $fcp->get_size ($uri) |
283 | =item $length = $fcp->get_size ($uri) |
| 373 | |
284 | |
| 374 | Finds and returns the size (rounded up to the nearest power of two) of the |
285 | Finds and returns the size (rounded up to the nearest power of two) of the |
| 375 | given document. |
286 | given document. |
| 376 | |
287 | |
| 377 | UNTESTED. |
|
|
| 378 | |
|
|
| 379 | =cut |
288 | =cut |
| 380 | |
289 | |
| 381 | $txn->(get_size => sub { |
290 | $txn->(get_size => sub { |
| 382 | my ($self, $uri) = @_; |
291 | my ($self, $uri) = @_; |
| 383 | |
292 | |
| … | |
… | |
| 386 | |
295 | |
| 387 | =item $txn = $fcp->txn_client_get ($uri [, $htl = 15 [, $removelocal = 0]]) |
296 | =item $txn = $fcp->txn_client_get ($uri [, $htl = 15 [, $removelocal = 0]]) |
| 388 | |
297 | |
| 389 | =item ($metadata, $data) = @{ $fcp->client_get ($uri, $htl, $removelocal) |
298 | =item ($metadata, $data) = @{ $fcp->client_get ($uri, $htl, $removelocal) |
| 390 | |
299 | |
| 391 | Fetches a (small, as it should fit into memory) file from |
300 | Fetches a (small, as it should fit into memory) key content block from |
| 392 | freenet. C<$meta> is the metadata (as returned by C<parse_metadata> or |
301 | freenet. C<$meta> is a C<Net::FCP::Metadata> object or C<undef>). |
| 393 | C<undef>). |
|
|
| 394 | |
302 | |
| 395 | Due to the overhead, a better method to download big files should be used. |
303 | The C<$uri> should begin with C<freenet:>, but the scheme is currently |
|
|
304 | added, if missing. |
| 396 | |
305 | |
| 397 | my ($meta, $data) = @{ |
306 | my ($meta, $data) = @{ |
| 398 | $fcp->client_get ( |
307 | $fcp->client_get ( |
| 399 | "freenet:CHK@hdXaxkwZ9rA8-SidT0AN-bniQlgPAwI,XdCDmBuGsd-ulqbLnZ8v~w" |
308 | "freenet:CHK@hdXaxkwZ9rA8-SidT0AN-bniQlgPAwI,XdCDmBuGsd-ulqbLnZ8v~w" |
| 400 | ) |
309 | ) |
| … | |
… | |
| 403 | =cut |
312 | =cut |
| 404 | |
313 | |
| 405 | $txn->(client_get => sub { |
314 | $txn->(client_get => sub { |
| 406 | my ($self, $uri, $htl, $removelocal) = @_; |
315 | my ($self, $uri, $htl, $removelocal) = @_; |
| 407 | |
316 | |
|
|
317 | $uri =~ s/^freenet://; $uri = "freenet:$uri"; |
|
|
318 | |
| 408 | $self->txn (client_get => URI => $uri, hops_to_live => (defined $htl ? $htl :15), |
319 | $self->txn (client_get => URI => $uri, hops_to_live => xeh (defined $htl ? $htl : 15), |
| 409 | remove_local_key => $removelocal ? "true" : "false"); |
320 | remove_local_key => $removelocal ? "true" : "false"); |
| 410 | }); |
321 | }); |
| 411 | |
322 | |
| 412 | =item $txn = $fcp->txn_client_put ($uri, $metadata, $data, $htl, $removelocal) |
323 | =item $txn = $fcp->txn_client_put ($uri, $metadata, $data, $htl, $removelocal) |
| 413 | |
324 | |
| 414 | =item my $uri = $fcp->client_put ($uri, $metadata, $data, $htl, $removelocal); |
325 | =item my $uri = $fcp->client_put ($uri, $metadata, $data, $htl, $removelocal); |
| 415 | |
326 | |
| 416 | Insert a new key. If the client is inserting a CHK, the URI may be |
327 | Insert a new key. If the client is inserting a CHK, the URI may be |
| 417 | abbreviated as just CHK@. In this case, the node will calculate the |
328 | abbreviated as just CHK@. In this case, the node will calculate the |
| 418 | CHK. |
329 | CHK. If the key is a private SSK key, the node will calculcate the public |
|
|
330 | key and the resulting public URI. |
| 419 | |
331 | |
| 420 | C<$meta> can be a reference or a string (ONLY THE STRING CASE IS IMPLEMENTED!). |
332 | C<$meta> can be a hash reference (same format as returned by |
|
|
333 | C<Net::FCP::parse_metadata>) or a string. |
| 421 | |
334 | |
| 422 | THIS INTERFACE IS UNTESTED AND SUBJECT TO CHANGE. |
335 | The result is an arrayref with the keys C<uri>, C<public_key> and C<private_key>. |
| 423 | |
336 | |
| 424 | =cut |
337 | =cut |
| 425 | |
338 | |
| 426 | $txn->(client_put => sub { |
339 | $txn->(client_put => sub { |
| 427 | my ($self, $uri, $meta, $data, $htl, $removelocal) = @_; |
340 | my ($self, $uri, $metadata, $data, $htl, $removelocal) = @_; |
| 428 | |
341 | |
| 429 | $self->txn (client_put => URI => $uri, hops_to_live => (defined $htl ? $htl :15), |
342 | $metadata = Net::FCP::Metadata::build_metadata $metadata; |
|
|
343 | $uri =~ s/^freenet://; $uri = "freenet:$uri"; |
|
|
344 | |
|
|
345 | $self->txn (client_put => URI => $uri, |
|
|
346 | hops_to_live => xeh (defined $htl ? $htl : 15), |
| 430 | remove_local_key => $removelocal ? "true" : "false", |
347 | remove_local_key => $removelocal ? "true" : "false", |
| 431 | data => "$meta$data", metadata_length => length $meta); |
348 | data => "$metadata$data", metadata_length => xeh length $metadata); |
| 432 | }); |
349 | }); |
| 433 | |
350 | |
| 434 | } # transactions |
351 | } # transactions |
| 435 | |
352 | |
| 436 | =item MISSING: (ClientPut), InsretKey |
|
|
| 437 | |
|
|
| 438 | =back |
353 | =back |
| 439 | |
354 | |
| 440 | =head2 THE Net::FCP::Txn CLASS |
355 | =head2 THE Net::FCP::Txn CLASS |
| 441 | |
356 | |
| 442 | All requests (or transactions) are executed in a asynchroneous way (LIE: |
357 | All requests (or transactions) are executed in a asynchronous way. For |
| 443 | uploads are blocking). For each request, a C<Net::FCP::Txn> object is |
358 | each request, a C<Net::FCP::Txn> object is created (worse: a tcp |
| 444 | created (worse: a tcp connection is created, too). |
359 | connection is created, too). |
| 445 | |
360 | |
| 446 | For each request there is actually a different subclass (and it's possible |
361 | For each request there is actually a different subclass (and it's possible |
| 447 | to subclass these, although of course not documented). |
362 | to subclass these, although of course not documented). |
| 448 | |
363 | |
| 449 | The most interesting method is C<result>. |
364 | The most interesting method is C<result>. |
| … | |
… | |
| 465 | |
380 | |
| 466 | sub new { |
381 | sub new { |
| 467 | my $class = shift; |
382 | my $class = shift; |
| 468 | my $self = bless { @_ }, $class; |
383 | my $self = bless { @_ }, $class; |
| 469 | |
384 | |
| 470 | $self->{signal} = $EVENT->new_signal; |
385 | $self->{signal} = AnyEvent->condvar; |
| 471 | |
386 | |
| 472 | $self->{fcp}{txn}{$self} = $self; |
387 | $self->{fcp}{txn}{$self} = $self; |
| 473 | |
388 | |
| 474 | my $attr = ""; |
389 | my $attr = ""; |
| 475 | my $data = delete $self->{attr}{data}; |
390 | my $data = delete $self->{attr}{data}; |
| … | |
… | |
| 477 | while (my ($k, $v) = each %{$self->{attr}}) { |
392 | while (my ($k, $v) = each %{$self->{attr}}) { |
| 478 | $attr .= (Net::FCP::touc $k) . "=$v\012" |
393 | $attr .= (Net::FCP::touc $k) . "=$v\012" |
| 479 | } |
394 | } |
| 480 | |
395 | |
| 481 | if (defined $data) { |
396 | if (defined $data) { |
| 482 | $attr .= "DataLength=" . (length $data) . "\012"; |
397 | $attr .= sprintf "DataLength=%x\012", length $data; |
| 483 | $data = "Data\012$data"; |
398 | $data = "Data\012$data"; |
| 484 | } else { |
399 | } else { |
| 485 | $data = "EndMessage\012"; |
400 | $data = "EndMessage\012"; |
| 486 | } |
401 | } |
| 487 | |
402 | |
| 488 | socket my $fh, PF_INET, SOCK_STREAM, 0 |
403 | socket my $fh, PF_INET, SOCK_STREAM, 0 |
| 489 | or Carp::croak "unable to create new tcp socket: $!"; |
404 | or Carp::croak "unable to create new tcp socket: $!"; |
| 490 | binmode $fh, ":raw"; |
405 | binmode $fh, ":raw"; |
| 491 | fcntl $fh, F_SETFL, O_NONBLOCK; |
406 | fcntl $fh, F_SETFL, O_NONBLOCK; |
| 492 | connect $fh, (sockaddr_in $self->{fcp}{port}, inet_aton $self->{fcp}{host}) |
407 | connect $fh, (sockaddr_in $self->{fcp}{port}, inet_aton $self->{fcp}{host}); |
| 493 | and !$!{EWOULDBLOCK} |
|
|
| 494 | and !$!{EINPROGRESS} |
|
|
| 495 | and Carp::croak "FCP::txn: unable to connect to $self->{fcp}{host}:$self->{fcp}{port}: $!\n"; |
408 | # and Carp::croak "FCP::txn: unable to connect to $self->{fcp}{host}:$self->{fcp}{port}: $!\n"; |
| 496 | |
409 | |
| 497 | $self->{sbuf} = |
410 | $self->{sbuf} = |
| 498 | "\x00\x00\x00\x02" |
411 | "\x00\x00\x00\x02" |
| 499 | . Net::FCP::touc $self->{type} |
412 | . (Net::FCP::touc $self->{type}) |
| 500 | . "\012$attr$data"; |
413 | . "\012$attr$data"; |
| 501 | |
414 | |
| 502 | #$fh->shutdown (1); # freenet buggy?, well, it's java... |
415 | #shutdown $fh, 1; # freenet buggy?, well, it's java... |
| 503 | |
416 | |
| 504 | $self->{fh} = $fh; |
417 | $self->{fh} = $fh; |
| 505 | |
418 | |
| 506 | $self->{w} = $EVENT->new_from_fh ($fh)->cb(sub { $self->fh_ready_w })->poll(0, 1, 1); |
419 | $self->{w} = AnyEvent->io (fh => $fh, poll => 'w', cb => sub { $self->fh_ready_w }); |
| 507 | |
420 | |
| 508 | $self; |
421 | $self; |
| 509 | } |
422 | } |
| 510 | |
423 | |
| 511 | =item $txn = $txn->cb ($coderef) |
424 | =item $txn = $txn->cb ($coderef) |
| … | |
… | |
| 547 | $self; |
460 | $self; |
| 548 | } |
461 | } |
| 549 | |
462 | |
| 550 | =item $txn->cancel (%attr) |
463 | =item $txn->cancel (%attr) |
| 551 | |
464 | |
| 552 | Cancels the operation with a C<cancel> exception anf the given attributes |
465 | Cancels the operation with a C<cancel> exception and the given attributes |
| 553 | (consider at least giving the attribute C<reason>). |
466 | (consider at least giving the attribute C<reason>). |
| 554 | |
467 | |
| 555 | UNTESTED. |
468 | UNTESTED. |
| 556 | |
469 | |
| 557 | =cut |
470 | =cut |
| … | |
… | |
| 570 | |
483 | |
| 571 | if ($len > 0) { |
484 | if ($len > 0) { |
| 572 | substr $self->{sbuf}, 0, $len, ""; |
485 | substr $self->{sbuf}, 0, $len, ""; |
| 573 | unless (length $self->{sbuf}) { |
486 | unless (length $self->{sbuf}) { |
| 574 | fcntl $self->{fh}, F_SETFL, 0; |
487 | fcntl $self->{fh}, F_SETFL, 0; |
| 575 | $self->{w}->cb(sub { $self->fh_ready_r })->poll (1, 0, 1); |
488 | $self->{w} = AnyEvent->io (fh => $self->{fh}, poll => 'r', cb => sub { $self->fh_ready_r }); |
| 576 | } |
489 | } |
| 577 | } elsif (defined $len) { |
490 | } elsif (defined $len) { |
| 578 | $self->throw (Net::FCP::Exception->new (network_error => { reason => "unexpected end of file while writing" })); |
491 | $self->throw (Net::FCP::Exception->new (network_error => { reason => "unexpected end of file while writing" })); |
| 579 | } else { |
492 | } else { |
| 580 | $self->throw (Net::FCP::Exception->new (network_error => { reason => "$!" })); |
493 | $self->throw (Net::FCP::Exception->new (network_error => { reason => "$!" })); |
| … | |
… | |
| 582 | } |
495 | } |
| 583 | |
496 | |
| 584 | sub fh_ready_r { |
497 | sub fh_ready_r { |
| 585 | my ($self) = @_; |
498 | my ($self) = @_; |
| 586 | |
499 | |
| 587 | if (sysread $self->{fh}, $self->{buf}, 65536, length $self->{buf}) { |
500 | if (sysread $self->{fh}, $self->{buf}, 16384 + 1024, length $self->{buf}) { |
| 588 | for (;;) { |
501 | for (;;) { |
| 589 | if ($self->{datalen}) { |
502 | if ($self->{datalen}) { |
| 590 | #warn "expecting new datachunk $self->{datalen}, got ".(length $self->{buf})."\n";#d# |
503 | #warn "expecting new datachunk $self->{datalen}, got ".(length $self->{buf})."\n";#d# |
| 591 | if (length $self->{buf} >= $self->{datalen}) { |
504 | if (length $self->{buf} >= $self->{datalen}) { |
| 592 | $self->rcv_data (substr $self->{buf}, 0, delete $self->{datalen}, ""); |
505 | $self->rcv_data (substr $self->{buf}, 0, delete $self->{datalen}, ""); |
| … | |
… | |
| 645 | my ($self, $result) = @_; |
558 | my ($self, $result) = @_; |
| 646 | |
559 | |
| 647 | unless (exists $self->{result}) { |
560 | unless (exists $self->{result}) { |
| 648 | $self->{result} = $result; |
561 | $self->{result} = $result; |
| 649 | $self->{cb}->($self) if exists $self->{cb}; |
562 | $self->{cb}->($self) if exists $self->{cb}; |
| 650 | $self->{signal}->send; |
563 | $self->{signal}->broadcast; |
| 651 | } |
564 | } |
| 652 | } |
565 | } |
| 653 | |
566 | |
| 654 | sub eof { |
567 | sub eof { |
| 655 | my ($self) = @_; |
568 | my ($self) = @_; |
| … | |
… | |
| 666 | } |
579 | } |
| 667 | } |
580 | } |
| 668 | |
581 | |
| 669 | sub progress { |
582 | sub progress { |
| 670 | my ($self, $type, $attr) = @_; |
583 | my ($self, $type, $attr) = @_; |
|
|
584 | |
| 671 | $self->{fcp}->progress ($self, $type, $attr); |
585 | $self->{fcp}->progress ($self, $type, $attr); |
| 672 | } |
586 | } |
| 673 | |
587 | |
| 674 | =item $result = $txn->result |
588 | =item $result = $txn->result |
| 675 | |
589 | |
| 676 | Waits until a result is available and then returns it. |
590 | Waits until a result is available and then returns it. |
| 677 | |
591 | |
| 678 | This waiting is (depending on your event model) not very efficient, as it |
592 | This waiting is (depending on your event model) not very efficient, as it |
| 679 | is done outside the "mainloop". |
593 | is done outside the "mainloop". The biggest problem, however, is that it's |
|
|
594 | blocking one thread of execution. Try to use the callback mechanism, if |
|
|
595 | possible, and call result from within the callback (or after is has been |
|
|
596 | run), as then no waiting is necessary. |
| 680 | |
597 | |
| 681 | =cut |
598 | =cut |
| 682 | |
599 | |
| 683 | sub result { |
600 | sub result { |
| 684 | my ($self) = @_; |
601 | my ($self) = @_; |
| … | |
… | |
| 715 | use base Net::FCP::Txn; |
632 | use base Net::FCP::Txn; |
| 716 | |
633 | |
| 717 | sub rcv_success { |
634 | sub rcv_success { |
| 718 | my ($self, $attr) = @_; |
635 | my ($self, $attr) = @_; |
| 719 | |
636 | |
| 720 | $self->set_result ($attr); |
637 | $self->set_result ($attr->{uri}); |
| 721 | } |
638 | } |
| 722 | |
639 | |
| 723 | package Net::FCP::Txn::GenerateSVKPair; |
640 | package Net::FCP::Txn::GenerateSVKPair; |
| 724 | |
641 | |
| 725 | use base Net::FCP::Txn; |
642 | use base Net::FCP::Txn; |
| 726 | |
643 | |
| 727 | sub rcv_success { |
644 | sub rcv_success { |
| 728 | my ($self, $attr) = @_; |
645 | my ($self, $attr) = @_; |
| 729 | $self->set_result ([$attr->{PublicKey}, $attr->{PrivateKey}]); |
646 | $self->set_result ([$attr->{public_key}, $attr->{private_key}, $attr->{crypto_key}]); |
| 730 | } |
647 | } |
| 731 | |
648 | |
| 732 | package Net::FCP::Txn::InsertPrivateKey; |
649 | package Net::FCP::Txn::InvertPrivateKey; |
| 733 | |
650 | |
| 734 | use base Net::FCP::Txn; |
651 | use base Net::FCP::Txn; |
| 735 | |
652 | |
| 736 | sub rcv_success { |
653 | sub rcv_success { |
| 737 | my ($self, $attr) = @_; |
654 | my ($self, $attr) = @_; |
| 738 | $self->set_result ($attr->{PublicKey}); |
655 | $self->set_result ($attr->{public_key}); |
| 739 | } |
656 | } |
| 740 | |
657 | |
| 741 | package Net::FCP::Txn::GetSize; |
658 | package Net::FCP::Txn::GetSize; |
| 742 | |
659 | |
| 743 | use base Net::FCP::Txn; |
660 | use base Net::FCP::Txn; |
| 744 | |
661 | |
| 745 | sub rcv_success { |
662 | sub rcv_success { |
| 746 | my ($self, $attr) = @_; |
663 | my ($self, $attr) = @_; |
| 747 | $self->set_result ($attr->{Length}); |
664 | $self->set_result (hex $attr->{length}); |
| 748 | } |
665 | } |
| 749 | |
666 | |
| 750 | package Net::FCP::Txn::GetPut; |
667 | package Net::FCP::Txn::GetPut; |
| 751 | |
668 | |
| 752 | # base class for get and put |
669 | # base class for get and put |
| 753 | |
670 | |
| 754 | use base Net::FCP::Txn; |
671 | use base Net::FCP::Txn; |
| 755 | |
672 | |
| 756 | *rcv_uri_error = \&Net::FCP::Txn::rcv_throw_exception; |
673 | *rcv_uri_error = \&Net::FCP::Txn::rcv_throw_exception; |
| 757 | *rcv_route_not_found = \&Net::FCP::Txn::rcv_throw_exception; |
674 | *rcv_route_not_found = \&Net::FCP::Txn::rcv_throw_exception; |
| 758 | |
675 | |
| 759 | sub rcv_restarted { |
676 | sub rcv_restarted { |
| 760 | my ($self, $attr, $type) = @_; |
677 | my ($self, $attr, $type) = @_; |
| 761 | |
678 | |
| 762 | delete $self->{datalength}; |
679 | delete $self->{datalength}; |
| … | |
… | |
| 779 | |
696 | |
| 780 | $self->progress ("data", { chunk => length $chunk, received => length $self->{data}, total => $self->{datalength} }); |
697 | $self->progress ("data", { chunk => length $chunk, received => length $self->{data}, total => $self->{datalength} }); |
| 781 | |
698 | |
| 782 | if ($self->{datalength} == length $self->{data}) { |
699 | if ($self->{datalength} == length $self->{data}) { |
| 783 | my $data = delete $self->{data}; |
700 | my $data = delete $self->{data}; |
| 784 | my $meta = Net::FCP::parse_metadata substr $data, 0, $self->{metalength}, ""; |
701 | my $meta = new Net::FCP::Metadata (substr $data, 0, $self->{metalength}, ""); |
| 785 | |
702 | |
| 786 | $self->set_result ([$meta, $data]); |
703 | $self->set_result ([$meta, $data]); |
|
|
704 | $self->eof; |
| 787 | } |
705 | } |
| 788 | } |
706 | } |
| 789 | |
707 | |
| 790 | sub rcv_data_found { |
708 | sub rcv_data_found { |
| 791 | my ($self, $attr, $type) = @_; |
709 | my ($self, $attr, $type) = @_; |
| … | |
… | |
| 799 | package Net::FCP::Txn::ClientPut; |
717 | package Net::FCP::Txn::ClientPut; |
| 800 | |
718 | |
| 801 | use base Net::FCP::Txn::GetPut; |
719 | use base Net::FCP::Txn::GetPut; |
| 802 | |
720 | |
| 803 | *rcv_size_error = \&Net::FCP::Txn::rcv_throw_exception; |
721 | *rcv_size_error = \&Net::FCP::Txn::rcv_throw_exception; |
| 804 | *rcv_key_collision = \&Net::FCP::Txn::rcv_throw_exception; |
|
|
| 805 | |
722 | |
| 806 | sub rcv_pending { |
723 | sub rcv_pending { |
| 807 | my ($self, $attr, $type) = @_; |
724 | my ($self, $attr, $type) = @_; |
| 808 | $self->progress ($type, $attr); |
725 | $self->progress ($type, $attr); |
| 809 | } |
726 | } |
| … | |
… | |
| 811 | sub rcv_success { |
728 | sub rcv_success { |
| 812 | my ($self, $attr, $type) = @_; |
729 | my ($self, $attr, $type) = @_; |
| 813 | $self->set_result ($attr); |
730 | $self->set_result ($attr); |
| 814 | } |
731 | } |
| 815 | |
732 | |
|
|
733 | sub rcv_key_collision { |
|
|
734 | my ($self, $attr, $type) = @_; |
|
|
735 | $self->set_result ({ key_collision => 1, %$attr }); |
|
|
736 | } |
|
|
737 | |
| 816 | =back |
738 | =back |
| 817 | |
739 | |
| 818 | =head2 The Net::FCP::Exception CLASS |
740 | =head2 The Net::FCP::Exception CLASS |
| 819 | |
741 | |
| 820 | Any unexpected (non-standard) responses that make it impossible to return |
742 | Any unexpected (non-standard) responses that make it impossible to return |
| … | |
… | |
| 829 | |
751 | |
| 830 | package Net::FCP::Exception; |
752 | package Net::FCP::Exception; |
| 831 | |
753 | |
| 832 | use overload |
754 | use overload |
| 833 | '""' => sub { |
755 | '""' => sub { |
| 834 | "Net::FCP::Exception<<$_[0][0]," . (join ":", %{$_[0][1]}) . ">>\n"; |
756 | "Net::FCP::Exception<<$_[0][0]," . (join ":", %{$_[0][1]}) . ">>"; |
| 835 | }; |
757 | }; |
| 836 | |
758 | |
| 837 | =item $exc = new Net::FCP::Exception $type, \%attr |
759 | =item $exc = new Net::FCP::Exception $type, \%attr |
| 838 | |
760 | |
| 839 | Create a new exception object of the given type (a string like |
761 | Create a new exception object of the given type (a string like |
| … | |
… | |
| 886 | |
808 | |
| 887 | =head1 BUGS |
809 | =head1 BUGS |
| 888 | |
810 | |
| 889 | =head1 AUTHOR |
811 | =head1 AUTHOR |
| 890 | |
812 | |
| 891 | Marc Lehmann <pcg@goof.com> |
813 | Marc Lehmann <schmorp@schmorp.de> |
| 892 | http://www.goof.com/pcg/marc/ |
814 | http://home.schmorp.de/ |
| 893 | |
815 | |
| 894 | =cut |
816 | =cut |
| 895 | |
817 | |
| 896 | package Net::FCP::Event::Auto; |
818 | 1 |
| 897 | |
819 | |
| 898 | my @models = ( |
|
|
| 899 | [Coro => Coro::Event:: ], |
|
|
| 900 | [Event => Event::], |
|
|
| 901 | [Glib => Glib:: ], |
|
|
| 902 | [Tk => Tk::], |
|
|
| 903 | ); |
|
|
| 904 | |
|
|
| 905 | sub AUTOLOAD { |
|
|
| 906 | $AUTOLOAD =~ s/.*://; |
|
|
| 907 | |
|
|
| 908 | for (@models) { |
|
|
| 909 | my ($model, $package) = @$_; |
|
|
| 910 | if (defined ${"$package\::VERSION"}) { |
|
|
| 911 | $EVENT = "Net::FCP::Event::$model"; |
|
|
| 912 | eval "require $EVENT"; die if $@; |
|
|
| 913 | goto &{"$EVENT\::$AUTOLOAD"}; |
|
|
| 914 | } |
|
|
| 915 | } |
|
|
| 916 | |
|
|
| 917 | for (@models) { |
|
|
| 918 | my ($model, $package) = @$_; |
|
|
| 919 | $EVENT = "Net::FCP::Event::$model"; |
|
|
| 920 | if (eval "require $EVENT") { |
|
|
| 921 | goto &{"$EVENT\::$AUTOLOAD"}; |
|
|
| 922 | } |
|
|
| 923 | } |
|
|
| 924 | |
|
|
| 925 | die "No event module selected for Net::FCP and autodetect failed. Install any of these: Coro, Event, Glib or Tk."; |
|
|
| 926 | } |
|
|
| 927 | |
|
|
| 928 | 1; |
|
|
| 929 | |
|
|
