This file is indexed.

/usr/share/gtk-doc/html/p11-kit/p11-kit-PIN-Callbacks.html is in libp11-kit-dev 0.23.3-2.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>PIN Callbacks: p11-kit</title>
<meta name="generator" content="DocBook XSL Stylesheets V1.79.1">
<link rel="home" href="index.html" title="p11-kit">
<link rel="up" href="reference.html" title="API Reference">
<link rel="prev" href="p11-kit-URIs.html" title="URIs">
<link rel="next" href="p11-kit-Utilities.html" title="Utilities">
<meta name="generator" content="GTK-Doc V1.25 (XML mode)">
<link rel="stylesheet" href="style.css" type="text/css">
</head>
<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
<table class="navigation" id="top" width="100%" summary="Navigation header" cellpadding="2" cellspacing="5"><tr valign="middle">
<td width="100%" align="left" class="shortcuts">
<a href="#" class="shortcut">Top</a><span id="nav_description">  <span class="dim">|</span> 
                  <a href="#p11-kit-PIN-Callbacks.description" class="shortcut">Description</a></span>
</td>
<td><a accesskey="h" href="index.html"><img src="home.png" width="16" height="16" border="0" alt="Home"></a></td>
<td><a accesskey="u" href="reference.html"><img src="up.png" width="16" height="16" border="0" alt="Up"></a></td>
<td><a accesskey="p" href="p11-kit-URIs.html"><img src="left.png" width="16" height="16" border="0" alt="Prev"></a></td>
<td><a accesskey="n" href="p11-kit-Utilities.html"><img src="right.png" width="16" height="16" border="0" alt="Next"></a></td>
</tr></table>
<div class="refentry">
<a name="p11-kit-PIN-Callbacks"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2><span class="refentrytitle"><a name="p11-kit-PIN-Callbacks.top_of_page"></a>PIN Callbacks</span></h2>
<p>PIN Callbacks — PIN Callbacks</p>
</td>
<td class="gallery_image" valign="top" align="right"></td>
</tr></table></div>
<div class="refsect1">
<a name="p11-kit-PIN-Callbacks.functions"></a><h2>Functions</h2>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="functions_return">
<col class="functions_name">
</colgroup>
<tbody>
<tr>
<td class="function_type">
<a class="link" href="p11-kit-PIN-Callbacks.html#P11KitPin" title="P11KitPin"><span class="returnvalue">P11KitPin</span></a> *
</td>
<td class="function_name">
<a class="link" href="p11-kit-PIN-Callbacks.html#p11-kit-pin-new" title="p11_kit_pin_new ()">p11_kit_pin_new</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="p11-kit-PIN-Callbacks.html#P11KitPin" title="P11KitPin"><span class="returnvalue">P11KitPin</span></a> *
</td>
<td class="function_name">
<a class="link" href="p11-kit-PIN-Callbacks.html#p11-kit-pin-new-for-buffer" title="p11_kit_pin_new_for_buffer ()">p11_kit_pin_new_for_buffer</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="p11-kit-PIN-Callbacks.html#P11KitPin" title="P11KitPin"><span class="returnvalue">P11KitPin</span></a> *
</td>
<td class="function_name">
<a class="link" href="p11-kit-PIN-Callbacks.html#p11-kit-pin-new-for-string" title="p11_kit_pin_new_for_string ()">p11_kit_pin_new_for_string</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">const unsigned <span class="returnvalue">char</span> *
</td>
<td class="function_name">
<a class="link" href="p11-kit-PIN-Callbacks.html#p11-kit-pin-get-value" title="p11_kit_pin_get_value ()">p11_kit_pin_get_value</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">size_t</span>
</td>
<td class="function_name">
<a class="link" href="p11-kit-PIN-Callbacks.html#p11-kit-pin-get-length" title="p11_kit_pin_get_length ()">p11_kit_pin_get_length</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="p11-kit-PIN-Callbacks.html#P11KitPin" title="P11KitPin"><span class="returnvalue">P11KitPin</span></a> *
</td>
<td class="function_name">
<a class="link" href="p11-kit-PIN-Callbacks.html#p11-kit-pin-ref" title="p11_kit_pin_ref ()">p11_kit_pin_ref</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="p11-kit-PIN-Callbacks.html#p11-kit-pin-unref" title="p11_kit_pin_unref ()">p11_kit_pin_unref</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">int</span>
</td>
<td class="function_name">
<a class="link" href="p11-kit-PIN-Callbacks.html#p11-kit-pin-register-callback" title="p11_kit_pin_register_callback ()">p11_kit_pin_register_callback</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="p11-kit-PIN-Callbacks.html#p11-kit-pin-unregister-callback" title="p11_kit_pin_unregister_callback ()">p11_kit_pin_unregister_callback</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="p11-kit-PIN-Callbacks.html#P11KitPin" title="P11KitPin"><span class="returnvalue">P11KitPin</span></a> *
</td>
<td class="function_name">
<span class="c_punctuation">(</span><a class="link" href="p11-kit-PIN-Callbacks.html#p11-kit-pin-callback" title="p11_kit_pin_callback ()">*p11_kit_pin_callback</a><span class="c_punctuation">)</span> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="p11-kit-PIN-Callbacks.html#P11KitPin" title="P11KitPin"><span class="returnvalue">P11KitPin</span></a> *
</td>
<td class="function_name">
<a class="link" href="p11-kit-PIN-Callbacks.html#p11-kit-pin-request" title="p11_kit_pin_request ()">p11_kit_pin_request</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<span class="c_punctuation">(</span><a class="link" href="p11-kit-PIN-Callbacks.html#p11-kit-pin-destroy-func" title="p11_kit_pin_destroy_func ()">*p11_kit_pin_destroy_func</a><span class="c_punctuation">)</span> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="p11-kit-PIN-Callbacks.html#P11KitPin" title="P11KitPin"><span class="returnvalue">P11KitPin</span></a> *
</td>
<td class="function_name">
<a class="link" href="p11-kit-PIN-Callbacks.html#p11-kit-pin-file-callback" title="p11_kit_pin_file_callback ()">p11_kit_pin_file_callback</a> <span class="c_punctuation">()</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="p11-kit-PIN-Callbacks.other"></a><h2>Types and Values</h2>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="name">
<col class="description">
</colgroup>
<tbody>
<tr>
<td class="typedef_keyword">typedef</td>
<td class="function_name"><a class="link" href="p11-kit-PIN-Callbacks.html#P11KitPin" title="P11KitPin">P11KitPin</a></td>
</tr>
<tr>
<td class="datatype_keyword">enum</td>
<td class="function_name"><a class="link" href="p11-kit-PIN-Callbacks.html#P11KitPinFlags" title="enum P11KitPinFlags">P11KitPinFlags</a></td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name"><a class="link" href="p11-kit-PIN-Callbacks.html#P11-KIT-PIN-FALLBACK:CAPS" title="P11_KIT_PIN_FALLBACK">P11_KIT_PIN_FALLBACK</a></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="p11-kit-PIN-Callbacks.description"></a><h2>Description</h2>
<p>Applications can register a callback which will be called to provide a
password associated with a given pin source.</p>
<p>PKCS#11 URIs can contain a 'pin-source' attribute. The value of this attribute
is application dependent, but often references a file containing a PIN to
use.</p>
<p>Using these functions, an applications or libraries can register a
callback with <a class="link" href="p11-kit-PIN-Callbacks.html#p11-kit-pin-register-callback" title="p11_kit_pin_register_callback ()"><code class="function">p11_kit_pin_register_callback()</code></a> to be called when a given
'pin-source' attribute value is requested. The application can then prompt
the user or retrieve a PIN for the given context. These registered
callbacks are only relevant and valid within the current process.</p>
<p>A fallback callback can be registered by passing the <a class="link" href="p11-kit-PIN-Callbacks.html#P11-KIT-PIN-FALLBACK:CAPS" title="P11_KIT_PIN_FALLBACK"><code class="literal">P11_KIT_PIN_FALLBACK</code></a>
value to <a class="link" href="p11-kit-PIN-Callbacks.html#p11-kit-pin-register-callback" title="p11_kit_pin_register_callback ()"><code class="function">p11_kit_pin_register_callback()</code></a>. This fallback callback will be
called for every 'pin-source' attribute request for which no callback has been
directly registered.</p>
<p>To request a PIN for a given 'pin-source' attribute, use the
<a class="link" href="p11-kit-PIN-Callbacks.html#p11-kit-pin-request" title="p11_kit_pin_request ()"><code class="function">p11_kit_pin_request()</code></a> function. If this function returns <code class="literal">NULL</code> then either
no callbacks were registered or none of them could handle the request.</p>
<p>If multiple callbacks are registered for the same PIN source, then they are
called in last-registered-first-called order. They are called in turn until
one of them can handle the request. Fallback callbacks are not called if
a callback was registered specifically for a requested 'pin-source' attribute.</p>
<p>PINs themselves are handled inside of P11KitPin structures. These are thread
safe and allow the callback to specify how the PIN is stored in memory
and freed. A callback can use <a class="link" href="p11-kit-PIN-Callbacks.html#p11-kit-pin-new-for-string" title="p11_kit_pin_new_for_string ()"><code class="function">p11_kit_pin_new_for_string()</code></a> or related
functions to create a PIN to be returned.</p>
<p>For example in order to handle the following PKCS#11 URI with a 'pin-source'
attribute</p>
<code class="code"><div class="literallayout"><p><br>
     pkcs11:id=%69%95%3e%5c%f4%bd%ec%91;pin-source=my-application<br>
</p></div></code><p>an application could register a callback like this:</p>
<div class="informalexample">
  <table class="listing_frame" border="0" cellpadding="0" cellspacing="0">
    <tbody>
      <tr>
        <td class="listing_lines" align="right"><pre>1
2
3
4
5
6
7
8
9
10</pre></td>
        <td class="listing_code"><pre class="programlisting"><span class="gtkdoc kwb">static</span> P11KitPin<span class="gtkdoc opt">*</span>
<span class="function">my_application_pin_callback</span> <span class="gtkdoc opt">(</span><span class="gtkdoc kwb">const char</span> <span class="gtkdoc opt">*</span>pin_source<span class="gtkdoc opt">,</span> P11KitUri <span class="gtkdoc opt">*</span>pin_uri<span class="gtkdoc opt">,</span>
                             <span class="gtkdoc kwb">const char</span> <span class="gtkdoc opt">*</span>pin_description<span class="gtkdoc opt">,</span> P11KitPinFlags pin_flags<span class="gtkdoc opt">,</span>
                             <span class="gtkdoc kwb">void</span> <span class="gtkdoc opt">*</span>callback_data<span class="gtkdoc opt">)</span>
<span class="gtkdoc opt">{</span>
    <span class="keyword">return</span> <span class="function">p11_kit_pin_new_from_string</span> <span class="gtkdoc opt">(</span><span class="string">&quot;pin-value&quot;</span><span class="gtkdoc opt">);</span>
<span class="gtkdoc opt">}</span>

<span class="function"><a href="p11-kit-PIN-Callbacks.html#p11-kit-pin-register-callback">p11_kit_pin_register_callback</a></span> <span class="gtkdoc opt">(</span><span class="string">&quot;my-application&quot;</span><span class="gtkdoc opt">,</span> my_application_pin_callback<span class="gtkdoc opt">,</span>
                               NULL<span class="gtkdoc opt">,</span> NULL<span class="gtkdoc opt">);</span></pre></td>
      </tr>
    </tbody>
  </table>
</div>

</div>
<div class="refsect1">
<a name="p11-kit-PIN-Callbacks.functions_details"></a><h2>Functions</h2>
<div class="refsect2">
<a name="p11-kit-pin-new"></a><h3>p11_kit_pin_new ()</h3>
<pre class="programlisting"><a class="link" href="p11-kit-PIN-Callbacks.html#P11KitPin" title="P11KitPin"><span class="returnvalue">P11KitPin</span></a> *
p11_kit_pin_new (<em class="parameter"><code>const unsigned <span class="type">char</span> *value</code></em>,
                 <em class="parameter"><code><span class="type">size_t</span> length</code></em>);</pre>
<p>Create a new P11KitPin with the given PIN value. This function is
usually used from within registered PIN callbacks.</p>
<p>Exactly <em class="parameter"><code>length</code></em>
 bytes from <em class="parameter"><code>value</code></em>
 are used. Null terminated strings,
or encodings are not considered. A copy of the <em class="parameter"><code>value</code></em>
 will be made.</p>
<div class="refsect3">
<a name="p11-kit-pin-new.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>value</p></td>
<td class="parameter_description"><p>the value of the PIN</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>length</p></td>
<td class="parameter_description"><p>the length of <em class="parameter"><code>value</code></em>
</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="p11-kit-pin-new.returns"></a><h4>Returns</h4>
<p> The newly allocated P11KitPin, which should be freed with
<a class="link" href="p11-kit-PIN-Callbacks.html#p11-kit-pin-unref" title="p11_kit_pin_unref ()"><code class="function">p11_kit_pin_unref()</code></a> when no longer needed.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="p11-kit-pin-new-for-buffer"></a><h3>p11_kit_pin_new_for_buffer ()</h3>
<pre class="programlisting"><a class="link" href="p11-kit-PIN-Callbacks.html#P11KitPin" title="P11KitPin"><span class="returnvalue">P11KitPin</span></a> *
p11_kit_pin_new_for_buffer (<em class="parameter"><code>unsigned <span class="type">char</span> *buffer</code></em>,
                            <em class="parameter"><code><span class="type">size_t</span> length</code></em>,
                            <em class="parameter"><code><a class="link" href="p11-kit-PIN-Callbacks.html#p11-kit-pin-destroy-func" title="p11_kit_pin_destroy_func ()"><span class="type">p11_kit_pin_destroy_func</span></a> destroy</code></em>);</pre>
<p>Create a new P11KitPin which will use <em class="parameter"><code>buffer</code></em>
 for the PIN value.
This function is usually used from within registered PIN callbacks.</p>
<p>The buffer will not be copied. String encodings and null characters
are not considered.</p>
<p>When the last reference to this PIN is lost, then the <em class="parameter"><code>destroy</code></em>
 callback
function will be called passing <em class="parameter"><code>buffer</code></em>
 as an argument. This allows the
caller to use a buffer as a PIN without copying it.</p>
<div class="informalexample">
  <table class="listing_frame" border="0" cellpadding="0" cellspacing="0">
    <tbody>
      <tr>
        <td class="listing_lines" align="right"><pre>1
2
3
4</pre></td>
        <td class="listing_code"><pre class="programlisting"><span class="gtkdoc kwb">char</span> <span class="gtkdoc opt">*</span>buffer <span class="gtkdoc opt">=</span> <span class="function">malloc</span> <span class="gtkdoc opt">(</span><span class="number">128</span><span class="gtkdoc opt">);</span>
P11KitPin <span class="gtkdoc opt">*</span>pin<span class="gtkdoc opt">;</span>
 <span class="gtkdoc opt">....</span>
pin <span class="gtkdoc opt">=</span> <span class="function"><a href="p11-kit-PIN-Callbacks.html#p11-kit-pin-new-for-buffer">p11_kit_pin_new_for_buffer</a></span> <span class="gtkdoc opt">(</span>buffer<span class="gtkdoc opt">,</span> <span class="number">128</span><span class="gtkdoc opt">,</span> free<span class="gtkdoc opt">);</span></pre></td>
      </tr>
    </tbody>
  </table>
</div>

<div class="refsect3">
<a name="p11-kit-pin-new-for-buffer.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>buffer</p></td>
<td class="parameter_description"><p>the value of the PIN</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>length</p></td>
<td class="parameter_description"><p>the length of <em class="parameter"><code>buffer</code></em>
</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>destroy</p></td>
<td class="parameter_description"><p>if not <code class="literal">NULL</code>, then called when PIN is destroyed.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="p11-kit-pin-new-for-buffer.returns"></a><h4>Returns</h4>
<p> The newly allocated P11KitPin, which should be freed with
<a class="link" href="p11-kit-PIN-Callbacks.html#p11-kit-pin-unref" title="p11_kit_pin_unref ()"><code class="function">p11_kit_pin_unref()</code></a> when no longer needed.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="p11-kit-pin-new-for-string"></a><h3>p11_kit_pin_new_for_string ()</h3>
<pre class="programlisting"><a class="link" href="p11-kit-PIN-Callbacks.html#P11KitPin" title="P11KitPin"><span class="returnvalue">P11KitPin</span></a> *
p11_kit_pin_new_for_string (<em class="parameter"><code>const <span class="type">char</span> *value</code></em>);</pre>
<p>Create a new P11KitPin for the given null-terminated string, such as a
password. This function is usually used from within registered
PIN callbacks.</p>
<p>The PIN will consist of the string not including the null terminator.
String encoding is not considered. A copy of the <em class="parameter"><code>value</code></em>
 will be made.</p>
<div class="refsect3">
<a name="p11-kit-pin-new-for-string.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>value</p></td>
<td class="parameter_description"><p>the value of the PIN</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="p11-kit-pin-new-for-string.returns"></a><h4>Returns</h4>
<p> The newly allocated P11KitPin, which should be freed with
<a class="link" href="p11-kit-PIN-Callbacks.html#p11-kit-pin-unref" title="p11_kit_pin_unref ()"><code class="function">p11_kit_pin_unref()</code></a> when no longer needed.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="p11-kit-pin-get-value"></a><h3>p11_kit_pin_get_value ()</h3>
<pre class="programlisting">const unsigned <span class="returnvalue">char</span> *
p11_kit_pin_get_value (<em class="parameter"><code><a class="link" href="p11-kit-PIN-Callbacks.html#P11KitPin" title="P11KitPin"><span class="type">P11KitPin</span></a> *pin</code></em>,
                       <em class="parameter"><code><span class="type">size_t</span> *length</code></em>);</pre>
<p>Get the PIN value from a P11KitPin. <em class="parameter"><code>length</code></em>
 will be set to the
length of the value.</p>
<p>The value returned is owned by the P11KitPin and should not be modified.
It remains valid as long as a reference to the PIN is held. The PIN value
will not contain an extra null-terminator character.</p>
<div class="refsect3">
<a name="p11-kit-pin-get-value.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>pin</p></td>
<td class="parameter_description"><p>the P11KitPin</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>length</p></td>
<td class="parameter_description"><p>a location to return the value length</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="p11-kit-pin-get-value.returns"></a><h4>Returns</h4>
<p> the value for the PIN.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="p11-kit-pin-get-length"></a><h3>p11_kit_pin_get_length ()</h3>
<pre class="programlisting"><span class="returnvalue">size_t</span>
p11_kit_pin_get_length (<em class="parameter"><code><a class="link" href="p11-kit-PIN-Callbacks.html#P11KitPin" title="P11KitPin"><span class="type">P11KitPin</span></a> *pin</code></em>);</pre>
<p>Get the length of the PIN value from a P11KitPin.</p>
<div class="refsect3">
<a name="p11-kit-pin-get-length.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>pin</p></td>
<td class="parameter_description"><p>the P11KitPin</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="p11-kit-pin-get-length.returns"></a><h4>Returns</h4>
<p> the length of the PIN value.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="p11-kit-pin-ref"></a><h3>p11_kit_pin_ref ()</h3>
<pre class="programlisting"><a class="link" href="p11-kit-PIN-Callbacks.html#P11KitPin" title="P11KitPin"><span class="returnvalue">P11KitPin</span></a> *
p11_kit_pin_ref (<em class="parameter"><code><a class="link" href="p11-kit-PIN-Callbacks.html#P11KitPin" title="P11KitPin"><span class="type">P11KitPin</span></a> *pin</code></em>);</pre>
<p>Add a reference to a P11KitPin. This should be matched with a later call
to <a class="link" href="p11-kit-PIN-Callbacks.html#p11-kit-pin-unref" title="p11_kit_pin_unref ()"><code class="function">p11_kit_pin_unref()</code></a>. As long as at least one reference is held, the PIN
will remain valid and in memory.</p>
<div class="refsect3">
<a name="p11-kit-pin-ref.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>pin</p></td>
<td class="parameter_description"><p>the P11KitPin</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="p11-kit-pin-ref.returns"></a><h4>Returns</h4>
<p> the <em class="parameter"><code>pin</code></em>
pointer, for convenience sake.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="p11-kit-pin-unref"></a><h3>p11_kit_pin_unref ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
p11_kit_pin_unref (<em class="parameter"><code><a class="link" href="p11-kit-PIN-Callbacks.html#P11KitPin" title="P11KitPin"><span class="type">P11KitPin</span></a> *pin</code></em>);</pre>
<p>Remove a reference from a P11KitPin. When all references have been removed
then the PIN will be freed and will no longer be in memory.</p>
<div class="refsect3">
<a name="p11-kit-pin-unref.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>pin</p></td>
<td class="parameter_description"><p>the P11KitPin</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="p11-kit-pin-register-callback"></a><h3>p11_kit_pin_register_callback ()</h3>
<pre class="programlisting"><span class="returnvalue">int</span>
p11_kit_pin_register_callback (<em class="parameter"><code>const <span class="type">char</span> *pin_source</code></em>,
                               <em class="parameter"><code><a class="link" href="p11-kit-PIN-Callbacks.html#p11-kit-pin-callback" title="p11_kit_pin_callback ()"><span class="type">p11_kit_pin_callback</span></a> callback</code></em>,
                               <em class="parameter"><code><span class="type">void</span> *callback_data</code></em>,
                               <em class="parameter"><code><a class="link" href="p11-kit-PIN-Callbacks.html#p11-kit-pin-destroy-func" title="p11_kit_pin_destroy_func ()"><span class="type">p11_kit_pin_destroy_func</span></a> callback_destroy</code></em>);</pre>
<p>Register a callback to handle PIN requests for a given 'pin-source' attribute.
If <em class="parameter"><code>pin_source</code></em>
 is set to P11_KIT_PIN_FALLBACK then this will be a fallback
callback and will be called for requests for which no other callback has
been specifically registered.</p>
<p>If multiple callbacks are registered for the same <em class="parameter"><code>pin_source</code></em>
 value, then
the last registered callback will be the first to be called.</p>
<div class="refsect3">
<a name="p11-kit-pin-register-callback.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>pin_source</p></td>
<td class="parameter_description"><p>the 'pin-source' attribute this this callback is for</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>callback</p></td>
<td class="parameter_description"><p>the callback function</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>callback_data</p></td>
<td class="parameter_description"><p>data that will be passed to the callback</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>callback_destroy</p></td>
<td class="parameter_description"><p>a function that will be called with <em class="parameter"><code>callback_data</code></em>
when
the callback is unregistered.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="p11-kit-pin-register-callback.returns"></a><h4>Returns</h4>
<p> Returns negative if registering fails.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="p11-kit-pin-unregister-callback"></a><h3>p11_kit_pin_unregister_callback ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
p11_kit_pin_unregister_callback (<em class="parameter"><code>const <span class="type">char</span> *pin_source</code></em>,
                                 <em class="parameter"><code><a class="link" href="p11-kit-PIN-Callbacks.html#p11-kit-pin-callback" title="p11_kit_pin_callback ()"><span class="type">p11_kit_pin_callback</span></a> callback</code></em>,
                                 <em class="parameter"><code><span class="type">void</span> *callback_data</code></em>);</pre>
<p>Unregister a callback that was previously registered with the
<a class="link" href="p11-kit-PIN-Callbacks.html#p11-kit-pin-register-callback" title="p11_kit_pin_register_callback ()"><code class="function">p11_kit_pin_register_callback()</code></a> function. If more than one registered
callback matches the given arguments, then only one of those will be
removed.</p>
<div class="refsect3">
<a name="p11-kit-pin-unregister-callback.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>pin_source</p></td>
<td class="parameter_description"><p>the 'pin-source' attribute the callback was registered for</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>callback</p></td>
<td class="parameter_description"><p>the callback function that was registered</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>callback_data</p></td>
<td class="parameter_description"><p>data that was registered for the callback</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="p11-kit-pin-callback"></a><h3>p11_kit_pin_callback ()</h3>
<pre class="programlisting"><a class="link" href="p11-kit-PIN-Callbacks.html#P11KitPin" title="P11KitPin"><span class="returnvalue">P11KitPin</span></a> *
<span class="c_punctuation">(</span>*p11_kit_pin_callback<span class="c_punctuation">)</span> (<em class="parameter"><code>const <span class="type">char</span> *pin_source</code></em>,
                         <em class="parameter"><code><a class="link" href="p11-kit-URIs.html#P11KitUri" title="P11KitUri"><span class="type">P11KitUri</span></a> *pin_uri</code></em>,
                         <em class="parameter"><code>const <span class="type">char</span> *pin_description</code></em>,
                         <em class="parameter"><code><a class="link" href="p11-kit-PIN-Callbacks.html#P11KitPinFlags" title="enum P11KitPinFlags"><span class="type">P11KitPinFlags</span></a> pin_flags</code></em>,
                         <em class="parameter"><code><span class="type">void</span> *callback_data</code></em>);</pre>
<p>Represents a PIN callback function.</p>
<p>The various arguments are the same as the ones passed to
<a class="link" href="p11-kit-PIN-Callbacks.html#p11-kit-pin-request" title="p11_kit_pin_request ()"><code class="function">p11_kit_pin_request()</code></a>. The <em class="parameter"><code>callback_data</code></em>
 argument was the one passed to
<a class="link" href="p11-kit-PIN-Callbacks.html#p11-kit-pin-register-callback" title="p11_kit_pin_register_callback ()"><code class="function">p11_kit_pin_register_callback()</code></a> when registering this callback.</p>
<p>The function should return <code class="literal">NULL</code> if it could not provide a PIN, either
because of an error or a user cancellation.</p>
<p>If a PIN is returned, it will be unreferenced by the caller. So it should be
either newly allocated, or referenced before returning.</p>
<div class="refsect3">
<a name="p11-kit-pin-callback.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>pin_source</p></td>
<td class="parameter_description"><p>a 'pin-source' attribute string</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>pin_uri</p></td>
<td class="parameter_description"><p>a PKCS#11 URI that the PIN is for, or <code class="literal">NULL</code></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>pin_description</p></td>
<td class="parameter_description"><p>a descrption of what the PIN is for</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>pin_flags</p></td>
<td class="parameter_description"><p>flags describing the PIN request</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>callback_data</p></td>
<td class="parameter_description"><p>data that was provided when registering this callback</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="p11-kit-pin-callback.returns"></a><h4>Returns</h4>
<p> A PIN or <code class="literal">NULL</code></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="p11-kit-pin-request"></a><h3>p11_kit_pin_request ()</h3>
<pre class="programlisting"><a class="link" href="p11-kit-PIN-Callbacks.html#P11KitPin" title="P11KitPin"><span class="returnvalue">P11KitPin</span></a> *
p11_kit_pin_request (<em class="parameter"><code>const <span class="type">char</span> *pin_source</code></em>,
                     <em class="parameter"><code><a class="link" href="p11-kit-URIs.html#P11KitUri" title="P11KitUri"><span class="type">P11KitUri</span></a> *pin_uri</code></em>,
                     <em class="parameter"><code>const <span class="type">char</span> *pin_description</code></em>,
                     <em class="parameter"><code><a class="link" href="p11-kit-PIN-Callbacks.html#P11KitPinFlags" title="enum P11KitPinFlags"><span class="type">P11KitPinFlags</span></a> pin_flags</code></em>);</pre>
<p>Request a PIN for a given 'pin-source' attribute. The result depends on the
registered callbacks.</p>
<p>If not <code class="literal">NULL</code>, then the <em class="parameter"><code>pin_uri</code></em>
 attribute should point to the thing that the
PIN is being requested for. In most use cases this should be a PKCS#11 URI
pointing to a token.</p>
<p>The <em class="parameter"><code>pin_description</code></em>
 should always be specified. It is a string describing
what the PIN is for. For example this would be the token label, if the PIN
is for a token.</p>
<p>If more than one callback is registered for the <em class="parameter"><code>pin_source</code></em>
, then the latest
registered one will be called first. If that callback does not return a
PIN, then the next will be called in turn.</p>
<p>If no callback is registered for <em class="parameter"><code>pin_source</code></em>
, then the fallback callbacks will
be invoked in the same way. The fallback callbacks will not be called if any
callback has been registered specifically for <em class="parameter"><code>pin_source</code></em>
.</p>
<p>The PIN returned should be released with <a class="link" href="p11-kit-PIN-Callbacks.html#p11-kit-pin-unref" title="p11_kit_pin_unref ()"><code class="function">p11_kit_pin_unref()</code></a>.</p>
<div class="refsect3">
<a name="p11-kit-pin-request.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>pin_source</p></td>
<td class="parameter_description"><p>the 'pin-source' attribute that is being requested</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>pin_uri</p></td>
<td class="parameter_description"><p>a PKCS#11 URI that the PIN is being requested for, optionally <code class="literal">NULL</code>.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>pin_description</p></td>
<td class="parameter_description"><p>a description of what the PIN is for, must not be <code class="literal">NULL</code>.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>pin_flags</p></td>
<td class="parameter_description"><p>various flags for this request</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="p11-kit-pin-request.returns"></a><h4>Returns</h4>
<p> the PIN which should be released with <a class="link" href="p11-kit-PIN-Callbacks.html#p11-kit-pin-unref" title="p11_kit_pin_unref ()"><code class="function">p11_kit_pin_unref()</code></a>, or <code class="literal">NULL</code>
if no callback was registered or could proivde a PIN</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="p11-kit-pin-destroy-func"></a><h3>p11_kit_pin_destroy_func ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
<span class="c_punctuation">(</span>*p11_kit_pin_destroy_func<span class="c_punctuation">)</span> (<em class="parameter"><code><span class="type">void</span> *data</code></em>);</pre>
<p>A function called to free or cleanup <em class="parameter"><code>data</code></em>
.</p>
<div class="refsect3">
<a name="p11-kit-pin-destroy-func.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>data</p></td>
<td class="parameter_description"><p>the data to destroy</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="p11-kit-pin-file-callback"></a><h3>p11_kit_pin_file_callback ()</h3>
<pre class="programlisting"><a class="link" href="p11-kit-PIN-Callbacks.html#P11KitPin" title="P11KitPin"><span class="returnvalue">P11KitPin</span></a> *
p11_kit_pin_file_callback (<em class="parameter"><code>const <span class="type">char</span> *pin_source</code></em>,
                           <em class="parameter"><code><a class="link" href="p11-kit-URIs.html#P11KitUri" title="P11KitUri"><span class="type">P11KitUri</span></a> *pin_uri</code></em>,
                           <em class="parameter"><code>const <span class="type">char</span> *pin_description</code></em>,
                           <em class="parameter"><code><a class="link" href="p11-kit-PIN-Callbacks.html#P11KitPinFlags" title="enum P11KitPinFlags"><span class="type">P11KitPinFlags</span></a> pin_flags</code></em>,
                           <em class="parameter"><code><span class="type">void</span> *callback_data</code></em>);</pre>
<p>This is a PIN callback function that looks up the 'pin-source' attribute in
a file with that name. This can be used to enable the normal PKCS#11 URI
behavior described in the RFC.</p>
<p>If <em class="parameter"><code>pin_flags</code></em>
 contains the <a class="link" href="p11-kit-PIN-Callbacks.html#P11-KIT-PIN-FLAGS-RETRY:CAPS"><code class="literal">P11_KIT_PIN_FLAGS_RETRY</code></a> flag, then this
callback will always return <code class="literal">NULL</code>. This is to prevent endless loops
where an application is expecting to interact with a prompter, but
instead is interacting with this callback reading a file over and over.</p>
<p>This callback fails on files larger than 4 Kilobytes.</p>
<p>This callback is not registered by default. It may have security
implications depending on the source of the PKCS#11 URI and the PKCS#11
in use. To register it, use code like the following:</p>
<div class="informalexample">
  <table class="listing_frame" border="0" cellpadding="0" cellspacing="0">
    <tbody>
      <tr>
        <td class="listing_lines" align="right"><pre>1
2</pre></td>
        <td class="listing_code"><pre class="programlisting"><span class="function"><a href="p11-kit-PIN-Callbacks.html#p11-kit-pin-register-callback">p11_kit_pin_register_callback</a></span> <span class="gtkdoc opt">(</span>P11_KIT_PIN_FALLBACK<span class="gtkdoc opt">,</span> p11_kit_pin_file_callback<span class="gtkdoc opt">,</span>
                               NULL<span class="gtkdoc opt">,</span> NULL<span class="gtkdoc opt">);</span></pre></td>
      </tr>
    </tbody>
  </table>
</div>

<div class="refsect3">
<a name="p11-kit-pin-file-callback.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>pin_source</p></td>
<td class="parameter_description"><p>a 'pin-source' attribute string</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>pin_uri</p></td>
<td class="parameter_description"><p>a PKCS#11 URI that the PIN is for, or <code class="literal">NULL</code></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>pin_description</p></td>
<td class="parameter_description"><p>a descrption of what the PIN is for</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>pin_flags</p></td>
<td class="parameter_description"><p>flags describing the PIN request</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>callback_data</p></td>
<td class="parameter_description"><p>unused, should be <code class="literal">NULL</code></p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="p11-kit-pin-file-callback.returns"></a><h4>Returns</h4>
<p> a referenced PIN with the file contents, or <code class="literal">NULL</code> if the file
could not be read</p>
</div>
</div>
</div>
<div class="refsect1">
<a name="p11-kit-PIN-Callbacks.other_details"></a><h2>Types and Values</h2>
<div class="refsect2">
<a name="P11KitPin"></a><h3>P11KitPin</h3>
<pre class="programlisting">typedef struct p11_kit_pin P11KitPin;
</pre>
<p>A structure representing a PKCS#11 PIN. There are no public fields
visible in this structure. Use the various accessor functions.</p>
</div>
<hr>
<div class="refsect2">
<a name="P11KitPinFlags"></a><h3>enum P11KitPinFlags</h3>
<p>Flags that are passed to <a class="link" href="p11-kit-PIN-Callbacks.html#p11-kit-pin-request" title="p11_kit_pin_request ()"><code class="function">p11_kit_pin_request()</code></a> and registered callbacks.</p>
<div class="refsect3">
<a name="P11KitPinFlags.members"></a><h4>Members</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="300px" class="enum_members_name">
<col class="enum_members_description">
<col width="200px" class="enum_members_annotations">
</colgroup>
<tbody>
<tr>
<td class="enum_member_name"><p><a name="P11-KIT-PIN-FLAGS-USER-LOGIN:CAPS"></a>P11_KIT_PIN_FLAGS_USER_LOGIN</p></td>
<td class="enum_member_description">
<p>The PIN is for a PKCS#11 user type login.</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="P11-KIT-PIN-FLAGS-SO-LOGIN:CAPS"></a>P11_KIT_PIN_FLAGS_SO_LOGIN</p></td>
<td class="enum_member_description">
<p>The PIN is for a PKCS#11 security officer type login.</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="P11-KIT-PIN-FLAGS-CONTEXT-LOGIN:CAPS"></a>P11_KIT_PIN_FLAGS_CONTEXT_LOGIN</p></td>
<td class="enum_member_description">
<p>The PIN is for a PKCS#11 contect specific type login.</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="P11-KIT-PIN-FLAGS-RETRY:CAPS"></a>P11_KIT_PIN_FLAGS_RETRY</p></td>
<td class="enum_member_description">
<p>The PIN is being requested again, due to an invalid previous PIN.</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="P11-KIT-PIN-FLAGS-MANY-TRIES:CAPS"></a>P11_KIT_PIN_FLAGS_MANY_TRIES</p></td>
<td class="enum_member_description">
<p>The PIN has failed too many times, and few tries are left.</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="P11-KIT-PIN-FLAGS-FINAL-TRY:CAPS"></a>P11_KIT_PIN_FLAGS_FINAL_TRY</p></td>
<td class="enum_member_description">
<p>The PIN has failed too many times, and this is the last try.</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="P11-KIT-PIN-FALLBACK:CAPS"></a><h3>P11_KIT_PIN_FALLBACK</h3>
<pre class="programlisting">#define P11_KIT_PIN_FALLBACK ""
</pre>
<p>Used with <a class="link" href="p11-kit-PIN-Callbacks.html#p11-kit-pin-register-callback" title="p11_kit_pin_register_callback ()"><code class="function">p11_kit_pin_register_callback()</code></a> to register a fallback callback.
This callback will be called if no other callback is registered for a 'pin-source'.</p>
</div>
</div>
</div>
<div class="footer">
<hr>Generated by GTK-Doc V1.25</div>
</body>
</html>