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Diffstat (limited to 'src/lib/libcrypto/man/UI_new.3')
| -rw-r--r-- | src/lib/libcrypto/man/UI_new.3 | 529 |
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diff --git a/src/lib/libcrypto/man/UI_new.3 b/src/lib/libcrypto/man/UI_new.3 deleted file mode 100644 index e55477f31e..0000000000 --- a/src/lib/libcrypto/man/UI_new.3 +++ /dev/null | |||
| @@ -1,529 +0,0 @@ | |||
| 1 | .\" $OpenBSD: UI_new.3,v 1.13 2025/03/09 15:25:14 tb Exp $ | ||
| 2 | .\" full merge up to: OpenSSL 78b19e90 Jan 11 00:12:01 2017 +0100 | ||
| 3 | .\" selective merge up to: OpenSSL 61f805c1 Jan 16 01:01:46 2018 +0800 | ||
| 4 | .\" | ||
| 5 | .\" This file was written by Richard Levitte <levitte@openssl.org>. | ||
| 6 | .\" Copyright (c) 2001, 2016, 2017 The OpenSSL Project. All rights reserved. | ||
| 7 | .\" | ||
| 8 | .\" Redistribution and use in source and binary forms, with or without | ||
| 9 | .\" modification, are permitted provided that the following conditions | ||
| 10 | .\" are met: | ||
| 11 | .\" | ||
| 12 | .\" 1. Redistributions of source code must retain the above copyright | ||
| 13 | .\" notice, this list of conditions and the following disclaimer. | ||
| 14 | .\" | ||
| 15 | .\" 2. Redistributions in binary form must reproduce the above copyright | ||
| 16 | .\" notice, this list of conditions and the following disclaimer in | ||
| 17 | .\" the documentation and/or other materials provided with the | ||
| 18 | .\" distribution. | ||
| 19 | .\" | ||
| 20 | .\" 3. All advertising materials mentioning features or use of this | ||
| 21 | .\" software must display the following acknowledgment: | ||
| 22 | .\" "This product includes software developed by the OpenSSL Project | ||
| 23 | .\" for use in the OpenSSL Toolkit. (http://www.openssl.org/)" | ||
| 24 | .\" | ||
| 25 | .\" 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to | ||
| 26 | .\" endorse or promote products derived from this software without | ||
| 27 | .\" prior written permission. For written permission, please contact | ||
| 28 | .\" openssl-core@openssl.org. | ||
| 29 | .\" | ||
| 30 | .\" 5. Products derived from this software may not be called "OpenSSL" | ||
| 31 | .\" nor may "OpenSSL" appear in their names without prior written | ||
| 32 | .\" permission of the OpenSSL Project. | ||
| 33 | .\" | ||
| 34 | .\" 6. Redistributions of any form whatsoever must retain the following | ||
| 35 | .\" acknowledgment: | ||
| 36 | .\" "This product includes software developed by the OpenSSL Project | ||
| 37 | .\" for use in the OpenSSL Toolkit (http://www.openssl.org/)" | ||
| 38 | .\" | ||
| 39 | .\" THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY | ||
| 40 | .\" EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | ||
| 41 | .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | ||
| 42 | .\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR | ||
| 43 | .\" ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | ||
| 44 | .\" SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | ||
| 45 | .\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | ||
| 46 | .\" LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | ||
| 47 | .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | ||
| 48 | .\" STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | ||
| 49 | .\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED | ||
| 50 | .\" OF THE POSSIBILITY OF SUCH DAMAGE. | ||
| 51 | .\" | ||
| 52 | .Dd $Mdocdate: March 9 2025 $ | ||
| 53 | .Dt UI_NEW 3 | ||
| 54 | .Os | ||
| 55 | .Sh NAME | ||
| 56 | .Nm UI_new , | ||
| 57 | .Nm UI_new_method , | ||
| 58 | .Nm UI_free , | ||
| 59 | .Nm UI_add_input_string , | ||
| 60 | .Nm UI_dup_input_string , | ||
| 61 | .Nm UI_add_verify_string , | ||
| 62 | .Nm UI_dup_verify_string , | ||
| 63 | .Nm UI_add_input_boolean , | ||
| 64 | .Nm UI_dup_input_boolean , | ||
| 65 | .Nm UI_add_info_string , | ||
| 66 | .Nm UI_dup_info_string , | ||
| 67 | .Nm UI_add_error_string , | ||
| 68 | .Nm UI_dup_error_string , | ||
| 69 | .Nm UI_construct_prompt , | ||
| 70 | .Nm UI_add_user_data , | ||
| 71 | .Nm UI_get0_user_data , | ||
| 72 | .Nm UI_get0_result , | ||
| 73 | .Nm UI_process , | ||
| 74 | .Nm UI_ctrl , | ||
| 75 | .Nm UI_set_default_method , | ||
| 76 | .Nm UI_get_default_method , | ||
| 77 | .Nm UI_get_method , | ||
| 78 | .Nm UI_set_method , | ||
| 79 | .Nm UI_OpenSSL , | ||
| 80 | .Nm UI_null | ||
| 81 | .Nd New User Interface | ||
| 82 | .Sh SYNOPSIS | ||
| 83 | .In openssl/ui.h | ||
| 84 | .Ft UI * | ||
| 85 | .Fn UI_new void | ||
| 86 | .Ft UI * | ||
| 87 | .Fo UI_new_method | ||
| 88 | .Fa "const UI_METHOD *method" | ||
| 89 | .Fc | ||
| 90 | .Ft void | ||
| 91 | .Fo UI_free | ||
| 92 | .Fa "UI *ui" | ||
| 93 | .Fc | ||
| 94 | .Ft int | ||
| 95 | .Fo UI_add_input_string | ||
| 96 | .Fa "UI *ui" | ||
| 97 | .Fa "const char *prompt" | ||
| 98 | .Fa "int flags" | ||
| 99 | .Fa "char *result_buf" | ||
| 100 | .Fa "int minsize" | ||
| 101 | .Fa "int maxsize" | ||
| 102 | .Fc | ||
| 103 | .Ft int | ||
| 104 | .Fo UI_dup_input_string | ||
| 105 | .Fa "UI *ui" | ||
| 106 | .Fa "const char *prompt" | ||
| 107 | .Fa "int flags" | ||
| 108 | .Fa "char *result_buf" | ||
| 109 | .Fa "int minsize" | ||
| 110 | .Fa "int maxsize" | ||
| 111 | .Fc | ||
| 112 | .Ft int | ||
| 113 | .Fo UI_add_verify_string | ||
| 114 | .Fa "UI *ui" | ||
| 115 | .Fa "const char *prompt" | ||
| 116 | .Fa "int flags" | ||
| 117 | .Fa "char *result_buf" | ||
| 118 | .Fa "int minsize" | ||
| 119 | .Fa "int maxsize" | ||
| 120 | .Fa "const char *test_buf" | ||
| 121 | .Fc | ||
| 122 | .Ft int | ||
| 123 | .Fo UI_dup_verify_string | ||
| 124 | .Fa "UI *ui" | ||
| 125 | .Fa "const char *prompt" | ||
| 126 | .Fa "int flags" | ||
| 127 | .Fa "char *result_buf" | ||
| 128 | .Fa "int minsize" | ||
| 129 | .Fa "int maxsize" | ||
| 130 | .Fa "const char *test_buf" | ||
| 131 | .Fc | ||
| 132 | .Ft int | ||
| 133 | .Fo UI_add_input_boolean | ||
| 134 | .Fa "UI *ui" | ||
| 135 | .Fa "const char *prompt" | ||
| 136 | .Fa "const char *action_desc" | ||
| 137 | .Fa "const char *ok_chars" | ||
| 138 | .Fa "const char *cancel_chars" | ||
| 139 | .Fa "int flags" | ||
| 140 | .Fa "char *result_buf" | ||
| 141 | .Fc | ||
| 142 | .Ft int | ||
| 143 | .Fo UI_dup_input_boolean | ||
| 144 | .Fa "UI *ui" | ||
| 145 | .Fa "const char *prompt" | ||
| 146 | .Fa "const char *action_desc" | ||
| 147 | .Fa "const char *ok_chars" | ||
| 148 | .Fa "const char *cancel_chars" | ||
| 149 | .Fa "int flags" | ||
| 150 | .Fa "char *result_buf" | ||
| 151 | .Fc | ||
| 152 | .Ft int | ||
| 153 | .Fo UI_add_info_string | ||
| 154 | .Fa "UI *ui" | ||
| 155 | .Fa "const char *text" | ||
| 156 | .Fc | ||
| 157 | .Ft int | ||
| 158 | .Fo UI_dup_info_string | ||
| 159 | .Fa "UI *ui" | ||
| 160 | .Fa "const char *text" | ||
| 161 | .Fc | ||
| 162 | .Ft int | ||
| 163 | .Fo UI_add_error_string | ||
| 164 | .Fa "UI *ui" | ||
| 165 | .Fa "const char *text" | ||
| 166 | .Fc | ||
| 167 | .Ft int | ||
| 168 | .Fo UI_dup_error_string | ||
| 169 | .Fa "UI *ui" | ||
| 170 | .Fa "const char *text" | ||
| 171 | .Fc | ||
| 172 | .Fd /* These are the possible flags. They can be OR'ed together. */ | ||
| 173 | .Fd #define UI_INPUT_FLAG_ECHO 0x01 | ||
| 174 | .Fd #define UI_INPUT_FLAG_DEFAULT_PWD 0x02 | ||
| 175 | .Ft char * | ||
| 176 | .Fo UI_construct_prompt | ||
| 177 | .Fa "UI *ui_method" | ||
| 178 | .Fa "const char *object_desc" | ||
| 179 | .Fa "const char *object_name" | ||
| 180 | .Fc | ||
| 181 | .Ft void * | ||
| 182 | .Fo UI_add_user_data | ||
| 183 | .Fa "UI *ui" | ||
| 184 | .Fa "void *user_data" | ||
| 185 | .Fc | ||
| 186 | .Ft void * | ||
| 187 | .Fo UI_get0_user_data | ||
| 188 | .Fa "UI *ui" | ||
| 189 | .Fc | ||
| 190 | .Ft const char * | ||
| 191 | .Fo UI_get0_result | ||
| 192 | .Fa "UI *ui" | ||
| 193 | .Fa "int i" | ||
| 194 | .Fc | ||
| 195 | .Ft int | ||
| 196 | .Fo UI_process | ||
| 197 | .Fa "UI *ui" | ||
| 198 | .Fc | ||
| 199 | .Ft int | ||
| 200 | .Fo UI_ctrl | ||
| 201 | .Fa "UI *ui" | ||
| 202 | .Fa "int cmd" | ||
| 203 | .Fa "long i" | ||
| 204 | .Fa "void *p" | ||
| 205 | .Fa "void (*f)()" | ||
| 206 | .Fc | ||
| 207 | .Fd #define UI_CTRL_PRINT_ERRORS 1 | ||
| 208 | .Fd #define UI_CTRL_IS_REDOABLE 2 | ||
| 209 | .Ft void | ||
| 210 | .Fo UI_set_default_method | ||
| 211 | .Fa "const UI_METHOD *meth" | ||
| 212 | .Fc | ||
| 213 | .Ft const UI_METHOD * | ||
| 214 | .Fo UI_get_default_method | ||
| 215 | .Fa void | ||
| 216 | .Fc | ||
| 217 | .Ft const UI_METHOD * | ||
| 218 | .Fo UI_get_method | ||
| 219 | .Fa "UI *ui" | ||
| 220 | .Fc | ||
| 221 | .Ft const UI_METHOD * | ||
| 222 | .Fo UI_set_method | ||
| 223 | .Fa "UI *ui" | ||
| 224 | .Fa "const UI_METHOD *meth" | ||
| 225 | .Fc | ||
| 226 | .Ft const UI_METHOD * | ||
| 227 | .Fo UI_OpenSSL | ||
| 228 | .Fa void | ||
| 229 | .Fc | ||
| 230 | .Ft const UI_METHOD * | ||
| 231 | .Fo UI_null | ||
| 232 | .Fa void | ||
| 233 | .Fc | ||
| 234 | .Sh DESCRIPTION | ||
| 235 | UI stands for User Interface, and is a general purpose set of routines | ||
| 236 | to prompt the user for text-based information. | ||
| 237 | Through user-written methods (see | ||
| 238 | .Xr UI_create_method 3 ) , | ||
| 239 | prompting can be done in any way imaginable, be it plain text prompting, | ||
| 240 | through dialog boxes or from a cell phone. | ||
| 241 | .Pp | ||
| 242 | All the functions work through a context of the type | ||
| 243 | .Vt UI . | ||
| 244 | This context contains all the information needed to prompt correctly | ||
| 245 | as well as a reference to a | ||
| 246 | .Vt UI_METHOD , | ||
| 247 | which is an ordered vector of functions that carry out the actual | ||
| 248 | prompting. | ||
| 249 | .Pp | ||
| 250 | The first thing to do is to create a | ||
| 251 | .Vt UI | ||
| 252 | with | ||
| 253 | .Fn UI_new | ||
| 254 | or | ||
| 255 | .Fn UI_new_method , | ||
| 256 | then add information to it with the | ||
| 257 | .Fn UI_add_* | ||
| 258 | or | ||
| 259 | .Fn UI_dup_* | ||
| 260 | functions. | ||
| 261 | Also, user-defined random data can be passed down to the underlying | ||
| 262 | method through calls to | ||
| 263 | .Fn UI_add_user_data . | ||
| 264 | The default UI method doesn't care about these data, but other methods | ||
| 265 | might. | ||
| 266 | Finally, use | ||
| 267 | .Fn UI_process | ||
| 268 | to actually perform the prompting and | ||
| 269 | .Fn UI_get0_result | ||
| 270 | to find the result to the prompt. | ||
| 271 | .Pp | ||
| 272 | A | ||
| 273 | .Vt UI | ||
| 274 | can contain more than one prompt, which are performed in the given | ||
| 275 | sequence. | ||
| 276 | Each prompt gets an index number which is returned by the | ||
| 277 | .Fn UI_add_* | ||
| 278 | and | ||
| 279 | .Fn UI_dup_* | ||
| 280 | functions, and has to be used to get the corresponding result with | ||
| 281 | .Fn UI_get0_result . | ||
| 282 | .Pp | ||
| 283 | The functions are as follows: | ||
| 284 | .Pp | ||
| 285 | .Fn UI_new | ||
| 286 | creates a new | ||
| 287 | .Vt UI | ||
| 288 | using the default UI method. | ||
| 289 | When done with this UI, it should be freed using | ||
| 290 | .Fn UI_free . | ||
| 291 | .Pp | ||
| 292 | .Fn UI_new_method | ||
| 293 | creates a new | ||
| 294 | .Vt UI | ||
| 295 | using the given UI method. | ||
| 296 | When done with this UI, it should be freed using | ||
| 297 | .Fn UI_free . | ||
| 298 | .Pp | ||
| 299 | .Fn UI_OpenSSL | ||
| 300 | returns the built-in UI method (note: not necessarily the default one, | ||
| 301 | since the default can be changed. | ||
| 302 | See further on). | ||
| 303 | This method is the most machine/OS dependent part of OpenSSL and | ||
| 304 | normally generates the most problems when porting. | ||
| 305 | .Pp | ||
| 306 | .Fn UI_null | ||
| 307 | returns a UI method that does nothing. | ||
| 308 | Its use is to avoid getting internal defaults for passed | ||
| 309 | .Vt UI_METHOD | ||
| 310 | pointers. | ||
| 311 | .Pp | ||
| 312 | .Fn UI_free | ||
| 313 | removes | ||
| 314 | .Fa ui | ||
| 315 | from memory, along with all other pieces of memory that are connected | ||
| 316 | to it, like duplicated input strings, results and others. | ||
| 317 | If | ||
| 318 | .Fa ui | ||
| 319 | is a | ||
| 320 | .Dv NULL | ||
| 321 | pointer, no action occurs. | ||
| 322 | .Pp | ||
| 323 | .Fn UI_add_input_string | ||
| 324 | and | ||
| 325 | .Fn UI_add_verify_string | ||
| 326 | add a prompt to | ||
| 327 | .Fa ui , | ||
| 328 | as well as flags and a result buffer and the desired minimum and | ||
| 329 | maximum sizes of the result, not counting the final NUL character. | ||
| 330 | The given information is used to prompt for information, for example | ||
| 331 | a password, and to verify a password (i.e. having the user enter | ||
| 332 | it twice and check that the same string was entered twice). | ||
| 333 | .Fn UI_add_verify_string | ||
| 334 | takes an extra argument that should be a pointer to the result buffer | ||
| 335 | of the input string that it's supposed to verify, or verification will | ||
| 336 | fail. | ||
| 337 | .Pp | ||
| 338 | .Fn UI_add_input_boolean | ||
| 339 | adds a prompt to | ||
| 340 | .Fa ui | ||
| 341 | that's supposed to be answered in a boolean way, with a single | ||
| 342 | character for yes and a different character for no. | ||
| 343 | A set of characters that can be used to cancel the prompt is given as | ||
| 344 | well. | ||
| 345 | The prompt itself is really divided in two, one part being the | ||
| 346 | descriptive text (given through the | ||
| 347 | .Fa prompt | ||
| 348 | argument) and one describing the possible answers (given through the | ||
| 349 | .Fa action_desc | ||
| 350 | argument). | ||
| 351 | .Pp | ||
| 352 | .Fn UI_add_info_string | ||
| 353 | and | ||
| 354 | .Fn UI_add_error_string | ||
| 355 | add strings that are shown at the same time as the prompt for extra | ||
| 356 | information or to show an error string. | ||
| 357 | The difference between the two is only conceptual. | ||
| 358 | With the builtin method, there's no technical difference between them. | ||
| 359 | Other methods may make a difference between them, however. | ||
| 360 | .Pp | ||
| 361 | The flags currently supported are | ||
| 362 | .Dv UI_INPUT_FLAG_ECHO , | ||
| 363 | which is relevant for | ||
| 364 | .Fn UI_add_input_string | ||
| 365 | and will have the users response be echoed (when prompting for a | ||
| 366 | password, this flag should obviously not be used), and | ||
| 367 | .Dv UI_INPUT_FLAG_DEFAULT_PWD , | ||
| 368 | which means that a default password of some sort will be used | ||
| 369 | (completely depending on the application and the UI method). | ||
| 370 | .Pp | ||
| 371 | .Fn UI_dup_input_string , | ||
| 372 | .Fn UI_dup_verify_string , | ||
| 373 | .Fn UI_dup_input_boolean , | ||
| 374 | .Fn UI_dup_info_string , | ||
| 375 | and | ||
| 376 | .Fn UI_dup_error_string | ||
| 377 | are basically the same as their | ||
| 378 | .Fn UI_add_* | ||
| 379 | counterparts, except that they make their own copies of all strings. | ||
| 380 | .Pp | ||
| 381 | .Fn UI_construct_prompt | ||
| 382 | is a helper function that can be used to create a prompt from two pieces | ||
| 383 | of information: a description and a name. | ||
| 384 | The default constructor (if there is none provided by the method used) | ||
| 385 | creates a string "Enter | ||
| 386 | .Em description | ||
| 387 | for | ||
| 388 | .Em name Ns :". | ||
| 389 | With the description "pass phrase" and the file name "foo.key", that | ||
| 390 | becomes "Enter pass phrase for foo.key:". Other methods may create | ||
| 391 | whatever string and may include encodings that will be processed by the | ||
| 392 | other method functions. | ||
| 393 | .Pp | ||
| 394 | .Fn UI_add_user_data | ||
| 395 | adds a user data pointer for the method to use at any time. | ||
| 396 | The builtin UI method doesn't care about this info. | ||
| 397 | Note that several calls to this function doesn't add data - | ||
| 398 | the previous blob is replaced with the one given as argument. | ||
| 399 | .Pp | ||
| 400 | .Fn UI_get0_user_data | ||
| 401 | retrieves the data that has last been given to the | ||
| 402 | .Fa ui | ||
| 403 | with | ||
| 404 | .Fn UI_add_user_data . | ||
| 405 | .Pp | ||
| 406 | .Fn UI_get0_result | ||
| 407 | returns a pointer to the result buffer associated with the information | ||
| 408 | indexed by | ||
| 409 | .Fa i . | ||
| 410 | .Pp | ||
| 411 | .Fn UI_process | ||
| 412 | goes through the information given so far, does all the printing and | ||
| 413 | prompting and returns the final status, which is -2 on out-of-band | ||
| 414 | events (Interrupt, Cancel, ...), -1 on error, or 0 on success. | ||
| 415 | .Pp | ||
| 416 | .Fn UI_ctrl | ||
| 417 | adds extra control for the application author. | ||
| 418 | For now, it understands two commands: | ||
| 419 | .Dv UI_CTRL_PRINT_ERRORS , | ||
| 420 | which makes | ||
| 421 | .Fn UI_process | ||
| 422 | print the OpenSSL error stack as part of processing the | ||
| 423 | .Fa ui , | ||
| 424 | and | ||
| 425 | .Dv UI_CTRL_IS_REDOABLE , | ||
| 426 | which returns a flag saying if the used | ||
| 427 | .Fa ui | ||
| 428 | can be used again or not. | ||
| 429 | .Pp | ||
| 430 | .Fn UI_set_default_method | ||
| 431 | changes the default UI method to the one given. | ||
| 432 | This function is not thread-safe and should not be called at the | ||
| 433 | same time as other OpenSSL functions. | ||
| 434 | .Pp | ||
| 435 | .Fn UI_get_default_method | ||
| 436 | returns a pointer to the current default UI method. | ||
| 437 | .Pp | ||
| 438 | .Fn UI_get_method | ||
| 439 | returns the UI method associated with a given | ||
| 440 | .Fa ui . | ||
| 441 | .Pp | ||
| 442 | .Fn UI_set_method | ||
| 443 | changes the UI method associated with a given | ||
| 444 | .Fa ui . | ||
| 445 | .Sh RETURN VALUES | ||
| 446 | .Fn UI_new | ||
| 447 | and | ||
| 448 | .Fn UI_new_method | ||
| 449 | return a valid | ||
| 450 | .Vt UI | ||
| 451 | structure or | ||
| 452 | .Dv NULL | ||
| 453 | if an error occurred. | ||
| 454 | .Pp | ||
| 455 | .Fn UI_add_input_string , | ||
| 456 | .Fn UI_dup_input_string , | ||
| 457 | .Fn UI_add_verify_string , | ||
| 458 | .Fn UI_dup_verify_string , | ||
| 459 | .Fn UI_add_input_boolean , | ||
| 460 | .Fn UI_dup_input_boolean , | ||
| 461 | .Fn UI_add_info_string , | ||
| 462 | .Fn UI_dup_info_string , | ||
| 463 | .Fn UI_add_error_string , | ||
| 464 | and | ||
| 465 | .Fn UI_dup_error_string | ||
| 466 | return a positive number on success or a number | ||
| 467 | less than or equal to zero otherwise. | ||
| 468 | .Pp | ||
| 469 | .Fn UI_construct_prompt | ||
| 470 | and | ||
| 471 | .Fn UI_get0_result | ||
| 472 | return a string or | ||
| 473 | .Dv NULL | ||
| 474 | if an error occurred. | ||
| 475 | .Pp | ||
| 476 | .Fn UI_add_user_data | ||
| 477 | and | ||
| 478 | .Fn UI_get0_user_data | ||
| 479 | return a pointer to the user data that was contained in | ||
| 480 | .Fa ui | ||
| 481 | before the call. | ||
| 482 | In particular, | ||
| 483 | .Dv NULL | ||
| 484 | is a valid return value. | ||
| 485 | .Pp | ||
| 486 | .Fn UI_process | ||
| 487 | returns 0 on success or a negative value on error. | ||
| 488 | .Pp | ||
| 489 | .Fn UI_ctrl | ||
| 490 | returns a mask on success or \-1 on error. | ||
| 491 | .Pp | ||
| 492 | .Fn UI_get_default_method , | ||
| 493 | .Fn UI_OpenSSL | ||
| 494 | and | ||
| 495 | .Fn UI_null | ||
| 496 | always return a pointer to a valid | ||
| 497 | .Vt UI_METHOD | ||
| 498 | structure. | ||
| 499 | .Pp | ||
| 500 | .Fn UI_get_method | ||
| 501 | and | ||
| 502 | .Fn UI_set_method | ||
| 503 | return a pointer to the | ||
| 504 | .Vt UI_METHOD | ||
| 505 | structure that is installed in | ||
| 506 | .Fa ui | ||
| 507 | after the call. | ||
| 508 | The OpenSSL documentation says that they can fail and return | ||
| 509 | .Dv NULL , | ||
| 510 | but currently, this can only happen when and after | ||
| 511 | .Fn UI_set_method | ||
| 512 | is called with an explicit | ||
| 513 | .Dv NULL | ||
| 514 | argument. | ||
| 515 | .Sh SEE ALSO | ||
| 516 | .Xr crypto 3 , | ||
| 517 | .Xr UI_create_method 3 , | ||
| 518 | .Xr UI_get_string_type 3 | ||
| 519 | .Sh HISTORY | ||
| 520 | These functions first appeared in OpenSSL 0.9.7 | ||
| 521 | and have been available since | ||
| 522 | .Ox 3.2 . | ||
| 523 | .Pp | ||
| 524 | .Fn UI_null | ||
| 525 | first appeared in OpenSSL 1.1.1 and has been available since | ||
| 526 | .Ox 7.3 . | ||
| 527 | .Sh AUTHORS | ||
| 528 | .An Richard Levitte Aq Mt richard@levitte.org | ||
| 529 | for the OpenSSL project. | ||
