… | |
… | |
17 | of what the messages do. I am too lazy to document all this here. |
17 | of what the messages do. I am too lazy to document all this here. |
18 | |
18 | |
19 | =head1 WARNING |
19 | =head1 WARNING |
20 | |
20 | |
21 | This module is alpha. While it probably won't destroy (much :) of your |
21 | This module is alpha. While it probably won't destroy (much :) of your |
22 | data, it currently works only with the Event module (alkthough the event |
22 | data, it currently falls short of what it should provide (intelligent uri |
23 | mechanism is fully pluggable). |
23 | following, splitfile downloads, healing...) |
|
|
24 | |
|
|
25 | =head2 IMPORT TAGS |
|
|
26 | |
|
|
27 | Nothing much can be "imported" from this module right now. There are, |
|
|
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 | |
|
|
43 | =head2 FREENET BASICS |
|
|
44 | |
|
|
45 | Ok, this section will not explain any freenet basics to you, just some |
|
|
46 | problems I found that you might want to avoid: |
|
|
47 | |
|
|
48 | =over 4 |
|
|
49 | |
|
|
50 | =item freenet URIs are _NOT_ URIs |
|
|
51 | |
|
|
52 | Whenever a "uri" is required by the protocol, freenet expects a kind of |
|
|
53 | URI prefixed with the "freenet:" scheme, e.g. "freenet:CHK...". However, |
|
|
54 | these are not URIs, as freeent fails to parse them correctly, that is, you |
|
|
55 | must unescape an escaped characters ("%2c" => ",") yourself. Maybe in the |
|
|
56 | future this library will do it for you, so watch out for this incompatible |
|
|
57 | change. |
|
|
58 | |
|
|
59 | =item Numbers are in HEX |
|
|
60 | |
|
|
61 | Virtually every number in the FCP protocol is in hex. Be sure to use |
|
|
62 | C<hex()> on all such numbers, as the module (currently) does nothing to |
|
|
63 | convert these for you. |
|
|
64 | |
|
|
65 | =back |
24 | |
66 | |
25 | =head2 THE Net::FCP CLASS |
67 | =head2 THE Net::FCP CLASS |
26 | |
68 | |
27 | =over 4 |
69 | =over 4 |
28 | |
70 | |
29 | =cut |
71 | =cut |
30 | |
72 | |
31 | package Net::FCP; |
73 | package Net::FCP; |
32 | |
74 | |
33 | use Carp; |
75 | use Carp; |
34 | use IO::Socket::INET; |
|
|
35 | |
76 | |
36 | $VERSION = 0.02; |
77 | $VERSION = 0.5; |
37 | |
78 | |
38 | sub event_reg_cb { |
79 | no warnings; |
39 | my ($obj) = @_; |
|
|
40 | require Event; |
|
|
41 | |
80 | |
42 | $obj->{eventdata} = Event->io ( |
81 | our $EVENT = Net::FCP::Event::Auto::; |
43 | fd => $obj->{fh}, |
82 | |
44 | poll => 'r', |
83 | sub import { |
45 | cb => sub { |
84 | shift; |
46 | $obj->fh_ready; |
85 | |
|
|
86 | for (@_) { |
|
|
87 | if (/^event=(\w+)$/) { |
|
|
88 | $EVENT = "Net::FCP::Event::$1"; |
|
|
89 | eval "require $EVENT"; |
47 | }, |
90 | } |
48 | ); |
91 | } |
|
|
92 | die $@ if $@; |
49 | } |
93 | } |
50 | |
|
|
51 | sub event_unreg_cb { |
|
|
52 | $_[0]{eventdata} |
|
|
53 | and (delete $_[0]{eventdata})->cancel; |
|
|
54 | } |
|
|
55 | |
|
|
56 | sub event_wait_cb { |
|
|
57 | Event::one_event(); |
|
|
58 | } |
|
|
59 | |
|
|
60 | $regcb = \&event_reg_cb; |
|
|
61 | $unregcb = \&event_unreg_cb; |
|
|
62 | $waitcb = \&event_wait_cb; |
|
|
63 | |
94 | |
64 | sub touc($) { |
95 | sub touc($) { |
65 | local $_ = shift; |
96 | local $_ = shift; |
66 | 1 while s/((?:^|_)(?:svk|chk|uri)(?:_|$))/\U$1/; |
97 | 1 while s/((?:^|_)(?:svk|chk|uri)(?:_|$))/\U$1/; |
67 | s/(?:^|_)(.)/\U$1/g; |
98 | s/(?:^|_)(.)/\U$1/g; |
… | |
… | |
72 | local $_ = shift; |
103 | local $_ = shift; |
73 | s/(?<=[a-z])(?=[A-Z])/_/g; |
104 | s/(?<=[a-z])(?=[A-Z])/_/g; |
74 | lc $_; |
105 | lc $_; |
75 | } |
106 | } |
76 | |
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 the |
|
|
113 | mandatory version header entries) and key C<raw> containing the original |
|
|
114 | metadata string. |
|
|
115 | |
|
|
116 | All other headers are represented by arrayrefs (they can be repeated). |
|
|
117 | |
|
|
118 | Since this description is confusing, here is a rather verbose example of a |
|
|
119 | parsed manifest: |
|
|
120 | |
|
|
121 | ( |
|
|
122 | raw => "Version...", |
|
|
123 | version => { revision => 1 }, |
|
|
124 | document => [ |
|
|
125 | { |
|
|
126 | info => { format" => "image/jpeg" }, |
|
|
127 | name => "background.jpg", |
|
|
128 | redirect => { target => "freenet:CHK\@ZcagI,ra726bSw" }, |
|
|
129 | }, |
|
|
130 | { |
|
|
131 | info => { format" => "text/html" }, |
|
|
132 | name => ".next", |
|
|
133 | redirect => { target => "freenet:SSK\@ilUPAgM/TFEE/3" }, |
|
|
134 | }, |
|
|
135 | { |
|
|
136 | info => { format" => "text/html" }, |
|
|
137 | redirect => { target => "freenet:CHK\@8M8Po8ucwI,8xA" }, |
|
|
138 | } |
|
|
139 | ] |
|
|
140 | ) |
|
|
141 | |
|
|
142 | =cut |
|
|
143 | |
|
|
144 | sub parse_metadata { |
|
|
145 | my $data = shift; |
|
|
146 | my $meta = { raw => $data }; |
|
|
147 | |
|
|
148 | if ($data =~ /^Version\015?\012/gc) { |
|
|
149 | my $hdr = $meta->{version} = {}; |
|
|
150 | |
|
|
151 | for (;;) { |
|
|
152 | while ($data =~ /\G([^=\015\012]+)=([^\015\012]*)\015?\012/gc) { |
|
|
153 | my ($k, $v) = ($1, $2); |
|
|
154 | my @p = split /\./, tolc $k, 3; |
|
|
155 | |
|
|
156 | $hdr->{$p[0]} = $v if @p == 1; # lamest code I ever wrote |
|
|
157 | $hdr->{$p[0]}{$p[1]} = $v if @p == 2; |
|
|
158 | $hdr->{$p[0]}{$p[1]}{$p[2]} = $v if @p == 3; |
|
|
159 | die "FATAL: 4+ dot metadata" if @p >= 4; |
|
|
160 | } |
|
|
161 | |
|
|
162 | if ($data =~ /\GEndPart\015?\012/gc) { |
|
|
163 | # nop |
|
|
164 | } elsif ($data =~ /\GEnd(\015?\012|$)/gc) { |
|
|
165 | last; |
|
|
166 | } elsif ($data =~ /\G([A-Za-z0-9.\-]+)\015?\012/gcs) { |
|
|
167 | push @{$meta->{tolc $1}}, $hdr = {}; |
|
|
168 | } elsif ($data =~ /\G(.*)/gcs) { |
|
|
169 | print STDERR "metadata format error ($1), please report this string: <<$data>>"; |
|
|
170 | die "metadata format error"; |
|
|
171 | } |
|
|
172 | } |
|
|
173 | } |
|
|
174 | |
|
|
175 | #$meta->{tail} = substr $data, pos $data; |
|
|
176 | |
|
|
177 | $meta; |
|
|
178 | } |
|
|
179 | |
77 | =item $fcp = new Net::FCP [host => $host][, port => $port] |
180 | =item $fcp = new Net::FCP [host => $host][, port => $port] |
78 | |
181 | |
79 | Create a new virtual FCP connection to the given host and port (default |
182 | Create a new virtual FCP connection to the given host and port (default |
80 | 127.0.0.1:8481, or the environment variables C<FREDHOST> and C<FREDPORT>). |
183 | 127.0.0.1:8481, or the environment variables C<FREDHOST> and C<FREDPORT>). |
81 | |
184 | |
82 | Connections are virtual because no persistent physical connection is |
185 | Connections are virtual because no persistent physical connection is |
|
|
186 | established. |
|
|
187 | |
|
|
188 | =begin comment |
|
|
189 | |
83 | established. However, the existance of the node is checked by executing a |
190 | However, the existance of the node is checked by executing a |
84 | C<ClientHello> transaction. |
191 | C<ClientHello> transaction. |
|
|
192 | |
|
|
193 | =end |
85 | |
194 | |
86 | =cut |
195 | =cut |
87 | |
196 | |
88 | sub new { |
197 | sub new { |
89 | my $class = shift; |
198 | my $class = shift; |
90 | my $self = bless { @_ }, $class; |
199 | my $self = bless { @_ }, $class; |
91 | |
200 | |
92 | $self->{host} ||= $ENV{FREDHOST} || "127.0.0.1"; |
201 | $self->{host} ||= $ENV{FREDHOST} || "127.0.0.1"; |
93 | $self->{port} ||= $ENV{FREDPORt} || 8481; |
202 | $self->{port} ||= $ENV{FREDPORT} || 8481; |
94 | |
203 | |
95 | $self->{nodehello} = $self->client_hello |
204 | #$self->{nodehello} = $self->client_hello |
96 | or croak "unable to get nodehello from node\n"; |
205 | # or croak "unable to get nodehello from node\n"; |
97 | |
206 | |
98 | $self; |
207 | $self; |
99 | } |
208 | } |
100 | |
209 | |
|
|
210 | sub progress { |
|
|
211 | my ($self, $txn, $type, $attr) = @_; |
|
|
212 | #warn "progress<$txn,$type," . (join ":", %$attr) . ">\n"; |
|
|
213 | } |
|
|
214 | |
101 | =item $txn = $fcp->txn(type => attr => val,...) |
215 | =item $txn = $fcp->txn(type => attr => val,...) |
102 | |
216 | |
103 | The low-level interface to transactions. Don't use it. |
217 | The low-level interface to transactions. Don't use it. |
|
|
218 | |
|
|
219 | Here are some examples of using transactions: |
|
|
220 | |
|
|
221 | The blocking case, no (visible) transactions involved: |
|
|
222 | |
|
|
223 | my $nodehello = $fcp->client_hello; |
|
|
224 | |
|
|
225 | A transaction used in a blocking fashion: |
|
|
226 | |
|
|
227 | my $txn = $fcp->txn_client_hello; |
|
|
228 | ... |
|
|
229 | my $nodehello = $txn->result; |
|
|
230 | |
|
|
231 | Or shorter: |
|
|
232 | |
|
|
233 | my $nodehello = $fcp->txn_client_hello->result; |
|
|
234 | |
|
|
235 | Setting callbacks: |
|
|
236 | |
|
|
237 | $fcp->txn_client_hello->cb( |
|
|
238 | sub { my $nodehello => $_[0]->result } |
|
|
239 | ); |
104 | |
240 | |
105 | =cut |
241 | =cut |
106 | |
242 | |
107 | sub txn { |
243 | sub txn { |
108 | my ($self, $type, %attr) = @_; |
244 | my ($self, $type, %attr) = @_; |
… | |
… | |
112 | my $txn = "Net::FCP::Txn::$type"->new(fcp => $self, type => tolc $type, attr => \%attr); |
248 | my $txn = "Net::FCP::Txn::$type"->new(fcp => $self, type => tolc $type, attr => \%attr); |
113 | |
249 | |
114 | $txn; |
250 | $txn; |
115 | } |
251 | } |
116 | |
252 | |
117 | sub _txn($&) { |
253 | { # transactions |
|
|
254 | |
|
|
255 | my $txn = sub { |
118 | my ($name, $sub) = @_; |
256 | my ($name, $sub) = @_; |
119 | *{"$name\_txn"} = $sub; |
257 | *{"txn_$name"} = $sub; |
120 | *{$name} = sub { $sub->(@_)->result }; |
258 | *{$name} = sub { $sub->(@_)->result }; |
121 | } |
259 | }; |
122 | |
260 | |
123 | =item $txn = $fcp->txn_client_hello |
261 | =item $txn = $fcp->txn_client_hello |
124 | |
262 | |
125 | =item $nodehello = $fcp->client_hello |
263 | =item $nodehello = $fcp->client_hello |
126 | |
264 | |
… | |
… | |
132 | protocol => "1.2", |
270 | protocol => "1.2", |
133 | } |
271 | } |
134 | |
272 | |
135 | =cut |
273 | =cut |
136 | |
274 | |
137 | _txn client_hello => sub { |
275 | $txn->(client_hello => sub { |
138 | my ($self) = @_; |
276 | my ($self) = @_; |
139 | |
277 | |
140 | $self->txn ("client_hello"); |
278 | $self->txn ("client_hello"); |
141 | }; |
279 | }); |
142 | |
280 | |
143 | =item $txn = $fcp->txn_client_info |
281 | =item $txn = $fcp->txn_client_info |
144 | |
282 | |
145 | =item $nodeinfo = $fcp->client_info |
283 | =item $nodeinfo = $fcp->client_info |
146 | |
284 | |
… | |
… | |
170 | routing_time => "a5", |
308 | routing_time => "a5", |
171 | } |
309 | } |
172 | |
310 | |
173 | =cut |
311 | =cut |
174 | |
312 | |
175 | _txn client_info => sub { |
313 | $txn->(client_info => sub { |
176 | my ($self) = @_; |
314 | my ($self) = @_; |
177 | |
315 | |
178 | $self->txn ("client_info"); |
316 | $self->txn ("client_info"); |
179 | }; |
317 | }); |
180 | |
318 | |
181 | =item $txn = $fcp->txn_generate_chk ($metadata, $data) |
319 | =item $txn = $fcp->txn_generate_chk ($metadata, $data[, $cipher]) |
182 | |
320 | |
183 | =item $uri = $fcp->generate_chk ($metadata, $data) |
321 | =item $uri = $fcp->generate_chk ($metadata, $data[, $cipher]) |
184 | |
322 | |
185 | Creates a new CHK, given the metadata and data. UNTESTED. |
323 | Calculcates a CHK, given the metadata and data. C<$cipher> is either |
|
|
324 | C<Rijndael> or C<Twofish>, with the latter being the default. |
186 | |
325 | |
187 | =cut |
326 | =cut |
188 | |
327 | |
189 | _txn generate_chk => sub { |
328 | $txn->(generate_chk => sub { |
190 | my ($self, $metadata, $data) = @_; |
329 | my ($self, $metadata, $data, $cipher) = @_; |
191 | |
330 | |
192 | $self->txn (generate_chk => data => "$data$metadata", meta_data_length => length $metadata); |
331 | $self->txn (generate_chk => |
|
|
332 | data => "$metadata$data", |
|
|
333 | metadata_length => length $metadata, |
|
|
334 | cipher => $cipher || "Twofish"); |
193 | }; |
335 | }); |
194 | |
336 | |
195 | =item $txn = $fcp->txn_generate_svk_pair |
337 | =item $txn = $fcp->txn_generate_svk_pair |
196 | |
338 | |
197 | =item ($public, $private) = @{ $fcp->generate_svk_pair } |
339 | =item ($public, $private) = @{ $fcp->generate_svk_pair } |
198 | |
340 | |
… | |
… | |
203 | "ZnmvMITaTXBMFGl4~jrjuyWxOWg" |
345 | "ZnmvMITaTXBMFGl4~jrjuyWxOWg" |
204 | ] |
346 | ] |
205 | |
347 | |
206 | =cut |
348 | =cut |
207 | |
349 | |
208 | _txn generate_svk_pair => sub { |
350 | $txn->(generate_svk_pair => sub { |
209 | my ($self) = @_; |
351 | my ($self) = @_; |
210 | |
352 | |
211 | $self->txn ("generate_svk_pair"); |
353 | $self->txn ("generate_svk_pair"); |
212 | }; |
354 | }); |
213 | |
355 | |
214 | =item $txn = $fcp->txn_insert_private_key ($private) |
356 | =item $txn = $fcp->txn_insert_private_key ($private) |
215 | |
357 | |
216 | =item $uri = $fcp->insert_private_key ($private) |
358 | =item $public = $fcp->insert_private_key ($private) |
217 | |
359 | |
218 | Inserts a private key. $private can be either an insert URI (must start |
360 | Inserts a private key. $private can be either an insert URI (must start |
219 | with freenet:SSK@) or a raw private key (i.e. the private value you get back |
361 | with C<freenet:SSK@>) or a raw private key (i.e. the private value you get |
220 | from C<generate_svk_pair>). |
362 | back from C<generate_svk_pair>). |
221 | |
363 | |
222 | Returns the public key. |
364 | Returns the public key. |
223 | |
365 | |
224 | UNTESTED. |
366 | UNTESTED. |
225 | |
367 | |
226 | =cut |
368 | =cut |
227 | |
369 | |
228 | _txn insert_private_key => sub { |
370 | $txn->(insert_private_key => sub { |
229 | my ($self, $privkey) = @_; |
371 | my ($self, $privkey) = @_; |
230 | |
372 | |
231 | $self->txn (invert_private_key => private => $privkey); |
373 | $self->txn (invert_private_key => private => $privkey); |
232 | }; |
374 | }); |
233 | |
375 | |
234 | =item $txn = $fcp->txn_get_size ($uri) |
376 | =item $txn = $fcp->txn_get_size ($uri) |
235 | |
377 | |
236 | =item $length = $fcp->get_size ($uri) |
378 | =item $length = $fcp->get_size ($uri) |
237 | |
379 | |
… | |
… | |
240 | |
382 | |
241 | UNTESTED. |
383 | UNTESTED. |
242 | |
384 | |
243 | =cut |
385 | =cut |
244 | |
386 | |
245 | _txn get_size => sub { |
387 | $txn->(get_size => sub { |
246 | my ($self, $uri) = @_; |
388 | my ($self, $uri) = @_; |
247 | |
389 | |
248 | $self->txn (get_size => URI => $uri); |
390 | $self->txn (get_size => URI => $uri); |
249 | }; |
391 | }); |
250 | |
392 | |
251 | =item $txn = $fcp->txn_client_get ($uri [, $htl = 15 [, $removelocal = 0]]) |
393 | =item $txn = $fcp->txn_client_get ($uri [, $htl = 15 [, $removelocal = 0]]) |
252 | |
394 | |
253 | =item ($data, $metadata) = @{ $fcp->client_get ($uri, $htl, $removelocal) |
395 | =item ($metadata, $data) = @{ $fcp->client_get ($uri, $htl, $removelocal) |
254 | |
396 | |
255 | Fetches a (small, as it should fit into memory) file from freenet. |
397 | Fetches a (small, as it should fit into memory) file from |
|
|
398 | freenet. C<$meta> is the metadata (as returned by C<parse_metadata> or |
|
|
399 | C<undef>). |
256 | |
400 | |
257 | Due to the overhead, a better method to download big fiels should be used. |
401 | Due to the overhead, a better method to download big files should be used. |
258 | |
402 | |
259 | my ($data, $meta) = @{ |
403 | my ($meta, $data) = @{ |
260 | $fcp->client_get ( |
404 | $fcp->client_get ( |
261 | "freenet:CHK@hdXaxkwZ9rA8-SidT0AN-bniQlgPAwI,XdCDmBuGsd-ulqbLnZ8v~w" |
405 | "freenet:CHK@hdXaxkwZ9rA8-SidT0AN-bniQlgPAwI,XdCDmBuGsd-ulqbLnZ8v~w" |
262 | ) |
406 | ) |
263 | }; |
407 | }; |
264 | |
408 | |
265 | =cut |
409 | =cut |
266 | |
410 | |
267 | _txn client_get => sub { |
411 | $txn->(client_get => sub { |
268 | my ($self, $uri, $htl, $removelocal) = @_; |
412 | my ($self, $uri, $htl, $removelocal) = @_; |
269 | |
413 | |
270 | $self->txn (client_get => URI => $uri, hops_to_live => ($htl || 15), remove_local => $removelocal*1); |
414 | $self->txn (client_get => URI => $uri, hops_to_live => (defined $htl ? $htl :15), |
|
|
415 | remove_local_key => $removelocal ? "true" : "false"); |
271 | }; |
416 | }); |
272 | |
417 | |
|
|
418 | =item $txn = $fcp->txn_client_put ($uri, $metadata, $data, $htl, $removelocal) |
|
|
419 | |
|
|
420 | =item my $uri = $fcp->client_put ($uri, $metadata, $data, $htl, $removelocal); |
|
|
421 | |
|
|
422 | Insert a new key. If the client is inserting a CHK, the URI may be |
|
|
423 | abbreviated as just CHK@. In this case, the node will calculate the |
|
|
424 | CHK. |
|
|
425 | |
|
|
426 | C<$meta> can be a reference or a string (ONLY THE STRING CASE IS IMPLEMENTED!). |
|
|
427 | |
|
|
428 | THIS INTERFACE IS UNTESTED AND SUBJECT TO CHANGE. |
|
|
429 | |
|
|
430 | =cut |
|
|
431 | |
|
|
432 | $txn->(client_put => sub { |
|
|
433 | my ($self, $uri, $meta, $data, $htl, $removelocal) = @_; |
|
|
434 | |
|
|
435 | $self->txn (client_put => URI => $uri, hops_to_live => (defined $htl ? $htl :15), |
|
|
436 | remove_local_key => $removelocal ? "true" : "false", |
|
|
437 | data => "$meta$data", metadata_length => length $meta); |
|
|
438 | }); |
|
|
439 | |
|
|
440 | } # transactions |
|
|
441 | |
273 | =item MISSING: ClientPut |
442 | =item MISSING: (ClientPut), InsretKey |
274 | |
443 | |
275 | =back |
444 | =back |
276 | |
445 | |
277 | =head2 THE Net::FCP::Txn CLASS |
446 | =head2 THE Net::FCP::Txn CLASS |
278 | |
447 | |
… | |
… | |
289 | |
458 | |
290 | =cut |
459 | =cut |
291 | |
460 | |
292 | package Net::FCP::Txn; |
461 | package Net::FCP::Txn; |
293 | |
462 | |
|
|
463 | use Fcntl; |
|
|
464 | use Socket; |
|
|
465 | |
294 | =item new arg => val,... |
466 | =item new arg => val,... |
295 | |
467 | |
296 | Creates a new C<Net::FCP::Txn> object. Not normally used. |
468 | Creates a new C<Net::FCP::Txn> object. Not normally used. |
297 | |
469 | |
298 | =cut |
470 | =cut |
299 | |
471 | |
300 | sub new { |
472 | sub new { |
301 | my $class = shift; |
473 | my $class = shift; |
302 | my $self = bless { @_ }, $class; |
474 | my $self = bless { @_ }, $class; |
303 | |
475 | |
|
|
476 | $self->{signal} = $EVENT->new_signal; |
|
|
477 | |
|
|
478 | $self->{fcp}{txn}{$self} = $self; |
|
|
479 | |
304 | my $attr = ""; |
480 | my $attr = ""; |
305 | my $data = delete $self->{attr}{data}; |
481 | my $data = delete $self->{attr}{data}; |
306 | |
482 | |
307 | while (my ($k, $v) = each %{$self->{attr}}) { |
483 | while (my ($k, $v) = each %{$self->{attr}}) { |
308 | $attr .= (Net::FCP::touc $k) . "=$v\012" |
484 | $attr .= (Net::FCP::touc $k) . "=$v\012" |
309 | } |
485 | } |
310 | |
486 | |
311 | if (defined $data) { |
487 | if (defined $data) { |
312 | $attr .= "DataLength=" . (length $data) . "\012"; |
488 | $attr .= sprintf "DataLength=%x\012", length $data; |
313 | $data = "Data\012$data"; |
489 | $data = "Data\012$data"; |
314 | } else { |
490 | } else { |
315 | $data = "EndMessage\012"; |
491 | $data = "EndMessage\012"; |
316 | } |
492 | } |
317 | |
493 | |
318 | my $fh = new IO::Socket::INET |
494 | socket my $fh, PF_INET, SOCK_STREAM, 0 |
319 | PeerHost => $self->{fcp}{host}, |
495 | or Carp::croak "unable to create new tcp socket: $!"; |
320 | PeerPort => $self->{fcp}{port} |
|
|
321 | or Carp::croak "FCP::txn: unable to connect to $self->{fcp}{host}:$self->{fcp}{port}: $!\n"; |
|
|
322 | |
|
|
323 | binmode $fh, ":raw"; |
496 | binmode $fh, ":raw"; |
|
|
497 | fcntl $fh, F_SETFL, O_NONBLOCK; |
|
|
498 | connect $fh, (sockaddr_in $self->{fcp}{port}, inet_aton $self->{fcp}{host}) |
|
|
499 | and !$!{EWOULDBLOCK} |
|
|
500 | and !$!{EINPROGRESS} |
|
|
501 | and Carp::croak "FCP::txn: unable to connect to $self->{fcp}{host}:$self->{fcp}{port}: $!\n"; |
324 | |
502 | |
325 | if (0) { |
503 | $self->{sbuf} = |
326 | print |
504 | "\x00\x00\x00\x02" |
327 | Net::FCP::touc $self->{type}, "\012", |
|
|
328 | $attr, |
|
|
329 | $data, "\012"; |
|
|
330 | } |
|
|
331 | |
|
|
332 | print $fh |
|
|
333 | "\x00\x00", "\x00\x02", # SESSID, PRESID |
|
|
334 | Net::FCP::touc $self->{type}, "\012", |
505 | . (Net::FCP::touc $self->{type}) |
335 | $attr, |
506 | . "\012$attr$data"; |
336 | $data; |
|
|
337 | |
507 | |
338 | #$fh->shutdown (1); # freenet buggy?, well, it's java... |
508 | #shutdown $fh, 1; # freenet buggy?, well, it's java... |
339 | |
509 | |
340 | $self->{fh} = $fh; |
510 | $self->{fh} = $fh; |
341 | |
511 | |
342 | $Net::FCP::regcb->($self); |
512 | $self->{w} = $EVENT->new_from_fh ($fh)->cb(sub { $self->fh_ready_w })->poll(0, 1, 1); |
343 | |
513 | |
344 | $self; |
514 | $self; |
345 | } |
515 | } |
346 | |
516 | |
|
|
517 | =item $txn = $txn->cb ($coderef) |
|
|
518 | |
|
|
519 | Sets a callback to be called when the request is finished. The coderef |
|
|
520 | will be called with the txn as it's sole argument, so it has to call |
|
|
521 | C<result> itself. |
|
|
522 | |
|
|
523 | Returns the txn object, useful for chaining. |
|
|
524 | |
|
|
525 | Example: |
|
|
526 | |
|
|
527 | $fcp->txn_client_get ("freenet:CHK....") |
|
|
528 | ->userdata ("ehrm") |
|
|
529 | ->cb(sub { |
|
|
530 | my $data = shift->result; |
|
|
531 | }); |
|
|
532 | |
|
|
533 | =cut |
|
|
534 | |
|
|
535 | sub cb($$) { |
|
|
536 | my ($self, $cb) = @_; |
|
|
537 | $self->{cb} = $cb; |
|
|
538 | $self; |
|
|
539 | } |
|
|
540 | |
|
|
541 | =item $txn = $txn->userdata ([$userdata]) |
|
|
542 | |
|
|
543 | Set user-specific data. This is useful in progress callbacks. The data can be accessed |
|
|
544 | using C<< $txn->{userdata} >>. |
|
|
545 | |
|
|
546 | Returns the txn object, useful for chaining. |
|
|
547 | |
|
|
548 | =cut |
|
|
549 | |
|
|
550 | sub userdata($$) { |
|
|
551 | my ($self, $data) = @_; |
|
|
552 | $self->{userdata} = $data; |
|
|
553 | $self; |
|
|
554 | } |
|
|
555 | |
|
|
556 | =item $txn->cancel (%attr) |
|
|
557 | |
|
|
558 | Cancels the operation with a C<cancel> exception anf the given attributes |
|
|
559 | (consider at least giving the attribute C<reason>). |
|
|
560 | |
|
|
561 | UNTESTED. |
|
|
562 | |
|
|
563 | =cut |
|
|
564 | |
|
|
565 | sub cancel { |
|
|
566 | my ($self, %attr) = @_; |
|
|
567 | $self->throw (Net::FCP::Exception->new (cancel => { %attr })); |
|
|
568 | $self->set_result; |
|
|
569 | $self->eof; |
|
|
570 | } |
|
|
571 | |
347 | sub fh_ready { |
572 | sub fh_ready_w { |
|
|
573 | my ($self) = @_; |
|
|
574 | |
|
|
575 | my $len = syswrite $self->{fh}, $self->{sbuf}; |
|
|
576 | |
|
|
577 | if ($len > 0) { |
|
|
578 | substr $self->{sbuf}, 0, $len, ""; |
|
|
579 | unless (length $self->{sbuf}) { |
|
|
580 | fcntl $self->{fh}, F_SETFL, 0; |
|
|
581 | $self->{w}->cb(sub { $self->fh_ready_r })->poll (1, 0, 1); |
|
|
582 | } |
|
|
583 | } elsif (defined $len) { |
|
|
584 | $self->throw (Net::FCP::Exception->new (network_error => { reason => "unexpected end of file while writing" })); |
|
|
585 | } else { |
|
|
586 | $self->throw (Net::FCP::Exception->new (network_error => { reason => "$!" })); |
|
|
587 | } |
|
|
588 | } |
|
|
589 | |
|
|
590 | sub fh_ready_r { |
348 | my ($self) = @_; |
591 | my ($self) = @_; |
349 | |
592 | |
350 | if (sysread $self->{fh}, $self->{buf}, 65536, length $self->{buf}) { |
593 | if (sysread $self->{fh}, $self->{buf}, 65536, length $self->{buf}) { |
351 | for (;;) { |
594 | for (;;) { |
352 | if ($self->{datalen}) { |
595 | if ($self->{datalen}) { |
|
|
596 | #warn "expecting new datachunk $self->{datalen}, got ".(length $self->{buf})."\n";#d# |
353 | if (length $self->{buf} >= $self->{datalen}) { |
597 | if (length $self->{buf} >= $self->{datalen}) { |
354 | $self->rcv_data (substr $self->{buf}, 0, $self->{datalen}, ""); |
598 | $self->rcv_data (substr $self->{buf}, 0, delete $self->{datalen}, ""); |
355 | } else { |
599 | } else { |
356 | last; |
600 | last; |
357 | } |
601 | } |
358 | } elsif ($self->{buf} =~ s/^DataChunk\015?\012Length=([0-9a-fA-F]+)\015?\012Data\015?\012//) { |
602 | } elsif ($self->{buf} =~ s/^DataChunk\015?\012Length=([0-9a-fA-F]+)\015?\012Data\015?\012//) { |
359 | $self->{datalen} = hex $1; |
603 | $self->{datalen} = hex $1; |
|
|
604 | #warn "expecting new datachunk $self->{datalen}\n";#d# |
360 | } elsif ($self->{buf} =~ s/^([a-zA-Z]+)\015?\012(.*?)\015?\012EndMessage\015?\012//s) { |
605 | } elsif ($self->{buf} =~ s/^([a-zA-Z]+)\015?\012(?:(.+?)\015?\012)?EndMessage\015?\012//s) { |
361 | $self->rcv ($1, { |
606 | $self->rcv ($1, { |
362 | map { my ($a, $b) = split /=/, $_, 2; ((Net::FCP::tolc $a), $b) } |
607 | map { my ($a, $b) = split /=/, $_, 2; ((Net::FCP::tolc $a), $b) } |
363 | split /\015?\012/, $2 |
608 | split /\015?\012/, $2 |
364 | }); |
609 | }); |
365 | } else { |
610 | } else { |
366 | last; |
611 | last; |
367 | } |
612 | } |
368 | } |
613 | } |
369 | } else { |
614 | } else { |
370 | $Net::FCP::unregcb->($self); |
|
|
371 | delete $self->{fh}; |
|
|
372 | $self->eof; |
615 | $self->eof; |
373 | } |
616 | } |
374 | } |
|
|
375 | |
|
|
376 | sub rcv_data { |
|
|
377 | my ($self, $chunk) = @_; |
|
|
378 | |
|
|
379 | $self->{data} .= $chunk; |
|
|
380 | } |
617 | } |
381 | |
618 | |
382 | sub rcv { |
619 | sub rcv { |
383 | my ($self, $type, $attr) = @_; |
620 | my ($self, $type, $attr) = @_; |
384 | |
621 | |
… | |
… | |
391 | } else { |
628 | } else { |
392 | warn "received unexpected reply type '$type' for '$self->{type}', ignoring\n"; |
629 | warn "received unexpected reply type '$type' for '$self->{type}', ignoring\n"; |
393 | } |
630 | } |
394 | } |
631 | } |
395 | |
632 | |
|
|
633 | # used as a default exception thrower |
|
|
634 | sub rcv_throw_exception { |
|
|
635 | my ($self, $attr, $type) = @_; |
|
|
636 | $self->throw (Net::FCP::Exception->new ($type, $attr)); |
|
|
637 | } |
|
|
638 | |
|
|
639 | *rcv_failed = \&Net::FCP::Txn::rcv_throw_exception; |
|
|
640 | *rcv_format_error = \&Net::FCP::Txn::rcv_throw_exception; |
|
|
641 | |
|
|
642 | sub throw { |
|
|
643 | my ($self, $exc) = @_; |
|
|
644 | |
|
|
645 | $self->{exception} = $exc; |
|
|
646 | $self->set_result; |
|
|
647 | $self->eof; # must be last to avoid loops |
|
|
648 | } |
|
|
649 | |
396 | sub set_result { |
650 | sub set_result { |
397 | my ($self, $result) = @_; |
651 | my ($self, $result) = @_; |
398 | |
652 | |
399 | $self->{result} = $result unless exists $self->{result}; |
653 | unless (exists $self->{result}) { |
|
|
654 | $self->{result} = $result; |
|
|
655 | $self->{cb}->($self) if exists $self->{cb}; |
|
|
656 | $self->{signal}->send; |
|
|
657 | } |
400 | } |
658 | } |
401 | |
659 | |
402 | sub eof { |
660 | sub eof { |
403 | my ($self) = @_; |
661 | my ($self) = @_; |
404 | $self->set_result; |
662 | |
|
|
663 | delete $self->{w}; |
|
|
664 | delete $self->{fh}; |
|
|
665 | |
|
|
666 | delete $self->{fcp}{txn}{$self}; |
|
|
667 | |
|
|
668 | unless (exists $self->{result}) { |
|
|
669 | $self->throw (Net::FCP::Exception->new (short_data => { |
|
|
670 | reason => "unexpected eof or internal node error", |
|
|
671 | })); |
|
|
672 | } |
|
|
673 | } |
|
|
674 | |
|
|
675 | sub progress { |
|
|
676 | my ($self, $type, $attr) = @_; |
|
|
677 | $self->{fcp}->progress ($self, $type, $attr); |
405 | } |
678 | } |
406 | |
679 | |
407 | =item $result = $txn->result |
680 | =item $result = $txn->result |
408 | |
681 | |
409 | Waits until a result is available and then returns it. |
682 | Waits until a result is available and then returns it. |
… | |
… | |
414 | =cut |
687 | =cut |
415 | |
688 | |
416 | sub result { |
689 | sub result { |
417 | my ($self) = @_; |
690 | my ($self) = @_; |
418 | |
691 | |
419 | $Net::FCP::waitcb->() while !exists $self->{result}; |
692 | $self->{signal}->wait while !exists $self->{result}; |
|
|
693 | |
|
|
694 | die $self->{exception} if $self->{exception}; |
420 | |
695 | |
421 | return $self->{result}; |
696 | return $self->{result}; |
422 | } |
|
|
423 | |
|
|
424 | sub DESTROY { |
|
|
425 | $Net::FCP::unregcb->($_[0]); |
|
|
426 | } |
697 | } |
427 | |
698 | |
428 | package Net::FCP::Txn::ClientHello; |
699 | package Net::FCP::Txn::ClientHello; |
429 | |
700 | |
430 | use base Net::FCP::Txn; |
701 | use base Net::FCP::Txn; |
… | |
… | |
450 | use base Net::FCP::Txn; |
721 | use base Net::FCP::Txn; |
451 | |
722 | |
452 | sub rcv_success { |
723 | sub rcv_success { |
453 | my ($self, $attr) = @_; |
724 | my ($self, $attr) = @_; |
454 | |
725 | |
455 | $self->set_result ($attr); |
726 | $self->set_result ($attr->{uri}); |
456 | } |
727 | } |
457 | |
728 | |
458 | package Net::FCP::Txn::GenerateSVKPair; |
729 | package Net::FCP::Txn::GenerateSVKPair; |
459 | |
730 | |
460 | use base Net::FCP::Txn; |
731 | use base Net::FCP::Txn; |
461 | |
732 | |
462 | sub rcv_success { |
733 | sub rcv_success { |
463 | my ($self, $attr) = @_; |
734 | my ($self, $attr) = @_; |
464 | |
|
|
465 | $self->set_result ([$attr->{PublicKey}, $attr->{PrivateKey}]); |
735 | $self->set_result ([$attr->{PublicKey}, $attr->{PrivateKey}]); |
466 | } |
736 | } |
467 | |
737 | |
468 | package Net::FCP::Txn::InvertPrivateKey; |
738 | package Net::FCP::Txn::InsertPrivateKey; |
469 | |
739 | |
470 | use base Net::FCP::Txn; |
740 | use base Net::FCP::Txn; |
471 | |
741 | |
472 | sub rcv_success { |
742 | sub rcv_success { |
473 | my ($self, $attr) = @_; |
743 | my ($self, $attr) = @_; |
474 | |
|
|
475 | $self->set_result ($attr->{PublicKey}); |
744 | $self->set_result ($attr->{PublicKey}); |
476 | } |
745 | } |
477 | |
746 | |
478 | package Net::FCP::Txn::GetSize; |
747 | package Net::FCP::Txn::GetSize; |
479 | |
748 | |
480 | use base Net::FCP::Txn; |
749 | use base Net::FCP::Txn; |
481 | |
750 | |
482 | sub rcv_success { |
751 | sub rcv_success { |
483 | my ($self, $attr) = @_; |
752 | my ($self, $attr) = @_; |
484 | |
|
|
485 | $self->set_result ($attr->{Length}); |
753 | $self->set_result ($attr->{Length}); |
486 | } |
754 | } |
487 | |
755 | |
|
|
756 | package Net::FCP::Txn::GetPut; |
|
|
757 | |
|
|
758 | # base class for get and put |
|
|
759 | |
|
|
760 | use base Net::FCP::Txn; |
|
|
761 | |
|
|
762 | *rcv_uri_error = \&Net::FCP::Txn::rcv_throw_exception; |
|
|
763 | *rcv_route_not_found = \&Net::FCP::Txn::rcv_throw_exception; |
|
|
764 | |
|
|
765 | sub rcv_restarted { |
|
|
766 | my ($self, $attr, $type) = @_; |
|
|
767 | |
|
|
768 | delete $self->{datalength}; |
|
|
769 | delete $self->{metalength}; |
|
|
770 | delete $self->{data}; |
|
|
771 | |
|
|
772 | $self->progress ($type, $attr); |
|
|
773 | } |
|
|
774 | |
488 | package Net::FCP::Txn::ClientGet; |
775 | package Net::FCP::Txn::ClientGet; |
489 | |
776 | |
490 | use base Net::FCP::Txn; |
777 | use base Net::FCP::Txn::GetPut; |
|
|
778 | |
|
|
779 | *rcv_data_not_found = \&Net::FCP::Txn::rcv_throw_exception; |
|
|
780 | |
|
|
781 | sub rcv_data { |
|
|
782 | my ($self, $chunk) = @_; |
|
|
783 | |
|
|
784 | $self->{data} .= $chunk; |
|
|
785 | |
|
|
786 | $self->progress ("data", { chunk => length $chunk, received => length $self->{data}, total => $self->{datalength} }); |
|
|
787 | |
|
|
788 | if ($self->{datalength} == length $self->{data}) { |
|
|
789 | my $data = delete $self->{data}; |
|
|
790 | my $meta = Net::FCP::parse_metadata substr $data, 0, $self->{metalength}, ""; |
|
|
791 | |
|
|
792 | $self->set_result ([$meta, $data]); |
|
|
793 | $self->eof; |
|
|
794 | } |
|
|
795 | } |
491 | |
796 | |
492 | sub rcv_data_found { |
797 | sub rcv_data_found { |
|
|
798 | my ($self, $attr, $type) = @_; |
|
|
799 | |
|
|
800 | $self->progress ($type, $attr); |
|
|
801 | |
|
|
802 | $self->{datalength} = hex $attr->{data_length}; |
|
|
803 | $self->{metalength} = hex $attr->{metadata_length}; |
|
|
804 | } |
|
|
805 | |
|
|
806 | package Net::FCP::Txn::ClientPut; |
|
|
807 | |
|
|
808 | use base Net::FCP::Txn::GetPut; |
|
|
809 | |
|
|
810 | *rcv_size_error = \&Net::FCP::Txn::rcv_throw_exception; |
|
|
811 | *rcv_key_collision = \&Net::FCP::Txn::rcv_throw_exception; |
|
|
812 | |
|
|
813 | sub rcv_pending { |
|
|
814 | my ($self, $attr, $type) = @_; |
|
|
815 | $self->progress ($type, $attr); |
|
|
816 | } |
|
|
817 | |
|
|
818 | sub rcv_success { |
|
|
819 | my ($self, $attr, $type) = @_; |
|
|
820 | $self->set_result ($attr); |
|
|
821 | } |
|
|
822 | |
|
|
823 | =back |
|
|
824 | |
|
|
825 | =head2 The Net::FCP::Exception CLASS |
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826 | |
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827 | Any unexpected (non-standard) responses that make it impossible to return |
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828 | the advertised result will result in an exception being thrown when the |
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829 | C<result> method is called. |
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830 | |
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831 | These exceptions are represented by objects of this class. |
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832 | |
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833 | =over 4 |
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834 | |
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835 | =cut |
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836 | |
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837 | package Net::FCP::Exception; |
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838 | |
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839 | use overload |
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840 | '""' => sub { |
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841 | "Net::FCP::Exception<<$_[0][0]," . (join ":", %{$_[0][1]}) . ">>"; |
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842 | }; |
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843 | |
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844 | =item $exc = new Net::FCP::Exception $type, \%attr |
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845 | |
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846 | Create a new exception object of the given type (a string like |
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847 | C<route_not_found>), and a hashref containing additional attributes |
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848 | (usually the attributes of the message causing the exception). |
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849 | |
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850 | =cut |
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851 | |
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852 | sub new { |
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853 | my ($class, $type, $attr) = @_; |
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854 | |
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855 | bless [Net::FCP::tolc $type, { %$attr }], $class; |
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856 | } |
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857 | |
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858 | =item $exc->type([$type]) |
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859 | |
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860 | With no arguments, returns the exception type. Otherwise a boolean |
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861 | indicating wether the exception is of the given type is returned. |
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862 | |
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863 | =cut |
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864 | |
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865 | sub type { |
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866 | my ($self, $type) = @_; |
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867 | |
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868 | @_ >= 2 |
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869 | ? $self->[0] eq $type |
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870 | : $self->[0]; |
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871 | } |
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872 | |
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873 | =item $exc->attr([$attr]) |
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874 | |
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875 | With no arguments, returns the attributes. Otherwise the named attribute |
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876 | value is returned. |
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877 | |
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878 | =cut |
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879 | |
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880 | sub attr { |
493 | my ($self, $attr) = @_; |
881 | my ($self, $attr) = @_; |
494 | |
882 | |
495 | $self->{datalength} = hex $attr->{data_length}; |
883 | @_ >= 2 |
496 | $self->{metalength} = hex $attr->{meta_data_length}; |
884 | ? $self->[1]{$attr} |
497 | } |
885 | : $self->[1]; |
498 | |
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499 | sub eof { |
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500 | my ($self) = @_; |
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501 | #use PApp::Util; warn PApp::Util::dumpval $self; |
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502 | my $data = delete $self->{data}; |
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503 | $self->set_result ([ |
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504 | (substr $data, 0, $self->{datalength}-$self->{metalength}), |
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505 | (substr $data, $self->{datalength}-$self->{metalength}), |
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506 | ]); |
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507 | } |
886 | } |
508 | |
887 | |
509 | =back |
888 | =back |
510 | |
889 | |
511 | =head1 SEE ALSO |
890 | =head1 SEE ALSO |
… | |
… | |
519 | Marc Lehmann <pcg@goof.com> |
898 | Marc Lehmann <pcg@goof.com> |
520 | http://www.goof.com/pcg/marc/ |
899 | http://www.goof.com/pcg/marc/ |
521 | |
900 | |
522 | =cut |
901 | =cut |
523 | |
902 | |
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903 | package Net::FCP::Event::Auto; |
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904 | |
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905 | my @models = ( |
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906 | [Coro => Coro::Event:: ], |
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907 | [Event => Event::], |
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908 | [Glib => Glib:: ], |
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909 | [Tk => Tk::], |
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910 | ); |
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911 | |
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912 | sub AUTOLOAD { |
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913 | $AUTOLOAD =~ s/.*://; |
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914 | |
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915 | for (@models) { |
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916 | my ($model, $package) = @$_; |
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917 | if (defined ${"$package\::VERSION"}) { |
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918 | $EVENT = "Net::FCP::Event::$model"; |
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919 | eval "require $EVENT"; die if $@; |
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920 | goto &{"$EVENT\::$AUTOLOAD"}; |
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921 | } |
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922 | } |
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923 | |
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924 | for (@models) { |
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925 | my ($model, $package) = @$_; |
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926 | $EVENT = "Net::FCP::Event::$model"; |
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927 | if (eval "require $EVENT") { |
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928 | goto &{"$EVENT\::$AUTOLOAD"}; |
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929 | } |
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930 | } |
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931 | |
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932 | die "No event module selected for Net::FCP and autodetect failed. Install any of these: Coro, Event, Glib or Tk."; |
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933 | } |
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934 | |
524 | 1; |
935 | 1; |
525 | |
936 | |