├── .gitignore ├── package.json ├── readme.md ├── usappointment.js └── LICENSE /.gitignore: -------------------------------------------------------------------------------- 1 | node_modules/ 2 | -------------------------------------------------------------------------------- /package.json: -------------------------------------------------------------------------------- 1 | { 2 | "dependencies": { 3 | "minimist": "^1.2.6", 4 | "puppeteer": "^13.5.2" 5 | } 6 | } 7 | -------------------------------------------------------------------------------- /readme.md: -------------------------------------------------------------------------------- 1 | # What is this? 2 | 3 | This is a small puppeteer script that can be used to find and schedule an earlier US consulate appointment for US Visa in Canada and other countries. You **must** have an appointment made manually before using this script. 4 | 5 | This might be able to used for other countries by finding the consular ids mentioned below for that specific country. 6 | 7 | ## Prerequisites 8 | 9 | 1. Download and install Node.JS LTS 16.14.2 from for whatever OS you are using 10 | 2. Open command line/terminal window and type in following 11 | 1. npm install puppeteer --save 12 | 2. npm install minimist --save 13 | 3. npm install axios --save 14 | 3. Install Pushover Notifications app from App Store/Google Play if you would like to have push notifications when a date is found 15 | 16 | ## Usage 17 | 18 | Open command line or terminal window and navigate to the folder usappointment.js. Type in below code with updated arguments from command line arguments section. 19 | 20 | **Mac/Linux:** 21 | 22 | >node usappointment.js -r 'ca' -d '2022-06-22' -u 'username' -p 'password' -a 359734258 -c 95 -t 120 -n 'pu5hov3ru53rk3y' 23 | 24 | **Windows:** 25 | 26 | >node usappointment.js -r "ca" -d "2022-06-22" -u "username" -p "password" -a 359734258 -c 95 -t 120 -n "pu5hov3ru53rk3y" 27 | 28 | ## Command line arguments 29 | 30 | **-r** Country code (ISO-3166 Alpha-2 code ). Canada (ca), United States (us) 31 | 32 | **-d** Threshold date to look for earlier appointments. Format: YYYY-MM-DD 33 | 34 | **-u** Username 35 | 36 | **-p** Password 37 | 38 | **-a** Application id. This needs to be grabbed from the url when you navigate to Reschedule Appointment page. Example: **32943478**/appointment 39 | 40 | **-c** Consular id. Halifax 90, Montreal 91, Ottowa 92, Quebec City 93, Toronto 94, Vancouver is 95 for Canada. You can find ids for other consulates from the dropdown values in the appointment page. 41 | 42 | **-t** Retry timeout in seconds. Keep this above 120 seconds to make sure you are not getting temporarily banned from receiving available dates 43 | 44 | **-n** Pushover User Key from Pushover Notifications app. Do not provide this argument if you don't want to receive notifications. 45 | 46 | **-g** Use this argument without any value if your application consists more than one person 47 | 48 | ## Tips 49 | 50 | Comment line 100 and uncomment line 102 in usappointment.js to see puppeteer in action 51 | -------------------------------------------------------------------------------- /usappointment.js: -------------------------------------------------------------------------------- 1 | const puppeteer = require('puppeteer'); 2 | const parseArgs = require('minimist'); 3 | const axios = require('axios'); 4 | 5 | (async () => { 6 | //#region Command line args 7 | const args = parseArgs(process.argv.slice(2), {string: ['u', 'p', 'c', 'a', 'n', 'd', 'r'], boolean: ['g']}) 8 | const currentDate = new Date(args.d); 9 | const usernameInput = args.u; 10 | const passwordInput = args.p; 11 | const appointmentId = args.a; 12 | const retryTimeout = args.t * 1000; 13 | const consularId = args.c; 14 | const userToken = args.n; 15 | const groupAppointment = args.g; 16 | const region = args.r; 17 | //#endregion 18 | 19 | //#region Helper functions 20 | async function waitForSelectors(selectors, frame, options) { 21 | for (const selector of selectors) { 22 | try { 23 | return await waitForSelector(selector, frame, options); 24 | } catch (err) { 25 | } 26 | } 27 | throw new Error('Could not find element for selectors: ' + JSON.stringify(selectors)); 28 | } 29 | 30 | async function scrollIntoViewIfNeeded(element, timeout) { 31 | await waitForConnected(element, timeout); 32 | const isInViewport = await element.isIntersectingViewport({threshold: 0}); 33 | if (isInViewport) { 34 | return; 35 | } 36 | await element.evaluate(element => { 37 | element.scrollIntoView({ 38 | block: 'center', 39 | inline: 'center', 40 | behavior: 'auto', 41 | }); 42 | }); 43 | await waitForInViewport(element, timeout); 44 | } 45 | 46 | async function waitForConnected(element, timeout) { 47 | await waitForFunction(async () => { 48 | return await element.getProperty('isConnected'); 49 | }, timeout); 50 | } 51 | 52 | async function waitForInViewport(element, timeout) { 53 | await waitForFunction(async () => { 54 | return await element.isIntersectingViewport({threshold: 0}); 55 | }, timeout); 56 | } 57 | 58 | async function waitForSelector(selector, frame, options) { 59 | if (!Array.isArray(selector)) { 60 | selector = [selector]; 61 | } 62 | if (!selector.length) { 63 | throw new Error('Empty selector provided to waitForSelector'); 64 | } 65 | let element = null; 66 | for (let i = 0; i < selector.length; i++) { 67 | const part = selector[i]; 68 | if (element) { 69 | element = await element.waitForSelector(part, options); 70 | } else { 71 | element = await frame.waitForSelector(part, options); 72 | } 73 | if (!element) { 74 | throw new Error('Could not find element: ' + selector.join('>>')); 75 | } 76 | if (i < selector.length - 1) { 77 | element = (await element.evaluateHandle(el => el.shadowRoot ? el.shadowRoot : el)).asElement(); 78 | } 79 | } 80 | if (!element) { 81 | throw new Error('Could not find element: ' + selector.join('|')); 82 | } 83 | return element; 84 | } 85 | 86 | async function waitForFunction(fn, timeout) { 87 | let isActive = true; 88 | setTimeout(() => { 89 | isActive = false; 90 | }, timeout); 91 | while (isActive) { 92 | const result = await fn(); 93 | if (result) { 94 | return; 95 | } 96 | await new Promise(resolve => setTimeout(resolve, 100)); 97 | } 98 | throw new Error('Timed out'); 99 | } 100 | 101 | async function sleep(timeout) { 102 | return await new Promise(resolve => setTimeout(resolve, timeout)); 103 | } 104 | 105 | async function log(msg) { 106 | const currentDate = '[' + new Date().toLocaleString() + ']'; 107 | console.log(currentDate, msg); 108 | } 109 | 110 | async function notify(msg) { 111 | log(msg); 112 | 113 | if (!userToken) { 114 | return; 115 | } 116 | 117 | const pushOverAppToken = 'a5o8qtigtvu3yyfaeehtnzfkm88zc9'; 118 | const apiEndpoint = 'https://api.pushover.net/1/messages.json'; 119 | const data = { 120 | token: pushOverAppToken, 121 | user: userToken, 122 | message: msg 123 | }; 124 | 125 | await axios.post(apiEndpoint, data); 126 | } 127 | //#endregion 128 | 129 | async function runLogic() { 130 | //#region Init puppeteer 131 | const browser = await puppeteer.launch(); 132 | // Comment above line and uncomment following line to see puppeteer in action 133 | //const browser = await puppeteer.launch({ headless: false }); 134 | const page = await browser.newPage(); 135 | const timeout = 5000; 136 | const navigationTimeout = 60000; 137 | const smallTimeout = 100; 138 | page.setDefaultTimeout(timeout); 139 | page.setDefaultNavigationTimeout(navigationTimeout); 140 | //#endregion 141 | 142 | //#region Logic 143 | 144 | // Set the viewport to avoid elements changing places 145 | { 146 | const targetPage = page; 147 | await targetPage.setViewport({"width":2078,"height":1479}) 148 | } 149 | 150 | // Go to login page 151 | { 152 | const targetPage = page; 153 | await targetPage.goto('https://ais.usvisa-info.com/en-' + region + '/niv/users/sign_in', { waitUntil: 'domcontentloaded' }); 154 | } 155 | 156 | // Click on username input 157 | { 158 | const targetPage = page; 159 | const element = await waitForSelectors([["aria/Email *"],["#user_email"]], targetPage, { timeout, visible: true }); 160 | await scrollIntoViewIfNeeded(element, timeout); 161 | await element.click({ offset: { x: 118, y: 21.453125} }); 162 | } 163 | 164 | // Type username 165 | { 166 | const targetPage = page; 167 | const element = await waitForSelectors([["aria/Email *"],["#user_email"]], targetPage, { timeout, visible: true }); 168 | await scrollIntoViewIfNeeded(element, timeout); 169 | const type = await element.evaluate(el => el.type); 170 | if (["textarea","select-one","text","url","tel","search","password","number","email"].includes(type)) { 171 | await element.type(usernameInput); 172 | } else { 173 | await element.focus(); 174 | await element.evaluate((el, value) => { 175 | el.value = value; 176 | el.dispatchEvent(new Event('input', { bubbles: true })); 177 | el.dispatchEvent(new Event('change', { bubbles: true })); 178 | }, usernameInput); 179 | } 180 | } 181 | 182 | // Hit tab to go to the password input 183 | { 184 | const targetPage = page; 185 | await targetPage.keyboard.down("Tab"); 186 | } 187 | { 188 | const targetPage = page; 189 | await targetPage.keyboard.up("Tab"); 190 | } 191 | 192 | // Type password 193 | { 194 | const targetPage = page; 195 | const element = await waitForSelectors([["aria/Password"],["#user_password"]], targetPage, { timeout, visible: true }); 196 | await scrollIntoViewIfNeeded(element, timeout); 197 | const type = await element.evaluate(el => el.type); 198 | if (["textarea","select-one","text","url","tel","search","password","number","email"].includes(type)) { 199 | await element.type(passwordInput); 200 | } else { 201 | await element.focus(); 202 | await element.evaluate((el, value) => { 203 | el.value = value; 204 | el.dispatchEvent(new Event('input', { bubbles: true })); 205 | el.dispatchEvent(new Event('change', { bubbles: true })); 206 | }, passwordInput); 207 | } 208 | } 209 | 210 | // Tick the checkbox for agreement 211 | { 212 | const targetPage = page; 213 | const element = await waitForSelectors([["#sign_in_form > div.radio-checkbox-group.margin-top-30 > label > div"]], targetPage, { timeout, visible: true }); 214 | await scrollIntoViewIfNeeded(element, timeout); 215 | await element.click({ offset: { x: 9, y: 16.34375} }); 216 | } 217 | 218 | // Click login button 219 | { 220 | const targetPage = page; 221 | const element = await waitForSelectors([["aria/Sign In[role=\"button\"]"],["#new_user > p:nth-child(9) > input"]], targetPage, { timeout, visible: true }); 222 | await scrollIntoViewIfNeeded(element, timeout); 223 | await element.click({ offset: { x: 34, y: 11.34375} }); 224 | await targetPage.waitForNavigation(); 225 | } 226 | 227 | // We are logged in now. Check available dates from the API 228 | { 229 | const targetPage = page; 230 | const response = await targetPage.goto('https://ais.usvisa-info.com/en-' + region + '/niv/schedule/' + appointmentId + '/appointment/days/' + consularId + '.json?appointments[expedite]=false'); 231 | 232 | const availableDates = JSON.parse(await response.text()); 233 | 234 | if (availableDates.length <= 0) { 235 | log("There are no available dates for consulate with id " + consularId); 236 | await browser.close(); 237 | return false; 238 | } 239 | 240 | const firstDate = new Date(availableDates[0].date); 241 | 242 | if (firstDate > currentDate) { 243 | log("There is not an earlier date available than " + currentDate.toISOString().slice(0,10)); 244 | await browser.close(); 245 | return false; 246 | } 247 | 248 | notify("Found an earlier date! " + firstDate.toISOString().slice(0,10)); 249 | } 250 | 251 | // Go to appointment page 252 | { 253 | const targetPage = page; 254 | await targetPage.goto('https://ais.usvisa-info.com/en-' + region + '/niv/schedule/' + appointmentId + '/appointment', { waitUntil: 'domcontentloaded' }); 255 | await sleep(1000); 256 | } 257 | 258 | // Select multiple people if it is a group appointment 259 | { 260 | if(groupAppointment){ 261 | const targetPage = page; 262 | const element = await waitForSelectors([["aria/Continue"],["#main > div.mainContent > form > div:nth-child(3) > div > input"]], targetPage, { timeout, visible: true }); 263 | await scrollIntoViewIfNeeded(element, timeout); 264 | await element.click({ offset: { x: 70.515625, y: 25.25} }); 265 | await sleep(1000); 266 | } 267 | } 268 | 269 | // Select the specified consular from the dropdown 270 | { 271 | const targetPage = page; 272 | const element = await waitForSelectors([["aria/Consular Section Appointment","aria/[role=\"combobox\"]"],["#appointments_consulate_appointment_facility_id"]], targetPage, { timeout, visible: true }); 273 | await scrollIntoViewIfNeeded(element, timeout); 274 | await page.select("#appointments_consulate_appointment_facility_id", consularId); 275 | await sleep(1000); 276 | } 277 | 278 | // Click on date input 279 | { 280 | const targetPage = page; 281 | const element = await waitForSelectors([["aria/Date of Appointment *"],["#appointments_consulate_appointment_date"]], targetPage, { timeout, visible: true }); 282 | await scrollIntoViewIfNeeded(element, timeout); 283 | await element.click({ offset: { x: 394.5, y: 17.53125} }); 284 | await sleep(1000); 285 | } 286 | 287 | // Keep clicking next button until we find the first available date and click to that date 288 | { 289 | const targetPage = page; 290 | while (true) { 291 | try { 292 | const element = await waitForSelectors([["aria/25[role=\"link\"]"],["#ui-datepicker-div > div.ui-datepicker-group.ui-datepicker-group > table > tbody > tr > td.undefined > a"]], targetPage, { timeout:smallTimeout, visible: true }); 293 | await scrollIntoViewIfNeeded(element, timeout); 294 | await page.click('#ui-datepicker-div > div.ui-datepicker-group.ui-datepicker-group > table > tbody > tr > td.undefined > a'); 295 | await sleep(500); 296 | break; 297 | } catch (err) { 298 | { 299 | const targetPage = page; 300 | const element = await waitForSelectors([["aria/Next","aria/[role=\"generic\"]"],["#ui-datepicker-div > div.ui-datepicker-group.ui-datepicker-group-last > div > a > span"]], targetPage, { timeout, visible: true }); 301 | await scrollIntoViewIfNeeded(element, timeout); 302 | await element.click({ offset: { x: 4, y: 9.03125} }); 303 | } 304 | } 305 | } 306 | } 307 | 308 | // Select the first available Time from the time dropdown 309 | { 310 | const targetPage = page; 311 | const element = await waitForSelectors([["#appointments_consulate_appointment_time"]], targetPage, { timeout, visible: true }); 312 | await scrollIntoViewIfNeeded(element, timeout); 313 | await page.evaluate(() => { 314 | document.querySelector('#appointments_consulate_appointment_time option:nth-child(2)').selected = true; 315 | const event = new Event('change', {bubbles: true}); 316 | document.querySelector('#appointments_consulate_appointment_time').dispatchEvent(event); 317 | }) 318 | await sleep(1000); 319 | } 320 | 321 | // Click on reschedule button 322 | { 323 | const targetPage = page; 324 | const element = await waitForSelectors([["aria/Reschedule"],["#appointments_submit"]], targetPage, { timeout, visible: true }); 325 | await scrollIntoViewIfNeeded(element, timeout); 326 | await element.click({ offset: { x: 78.109375, y: 20.0625} }); 327 | await sleep(1000); 328 | } 329 | 330 | // Click on submit button on the confirmation popup 331 | { 332 | const targetPage = page; 333 | const element = await waitForSelectors([["aria/Cancel"],["body > div.reveal-overlay > div > div > a.button.alert"]], targetPage, { timeout, visible: true }); 334 | await scrollIntoViewIfNeeded(element, timeout); 335 | await page.click('body > div.reveal-overlay > div > div > a.button.alert'); 336 | await sleep(5000); 337 | } 338 | 339 | await browser.close(); 340 | return true; 341 | //#endregion 342 | } 343 | 344 | while (true){ 345 | try{ 346 | const result = await runLogic(); 347 | 348 | if (result){ 349 | notify("Successfully scheduled a new appointment"); 350 | break; 351 | } 352 | } catch (err){ 353 | // Swallow the error and keep running in case we encountered an error. 354 | } 355 | 356 | await sleep(retryTimeout); 357 | } 358 | })(); 359 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 2, June 1991 3 | 4 | Copyright (C) 1989, 1991 Free Software Foundation, Inc., 5 | 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 6 | Everyone is permitted to copy and distribute verbatim copies 7 | of this license document, but changing it is not allowed. 8 | 9 | Preamble 10 | 11 | The licenses for most software are designed to take away your 12 | freedom to share and change it. By contrast, the GNU General Public 13 | License is intended to guarantee your freedom to share and change free 14 | software--to make sure the software is free for all its users. This 15 | General Public License applies to most of the Free Software 16 | Foundation's software and to any other program whose authors commit to 17 | using it. (Some other Free Software Foundation software is covered by 18 | the GNU Lesser General Public License instead.) You can apply it to 19 | your programs, too. 20 | 21 | When we speak of free software, we are referring to freedom, not 22 | price. Our General Public Licenses are designed to make sure that you 23 | have the freedom to distribute copies of free software (and charge for 24 | this service if you wish), that you receive source code or can get it 25 | if you want it, that you can change the software or use pieces of it 26 | in new free programs; and that you know you can do these things. 27 | 28 | To protect your rights, we need to make restrictions that forbid 29 | anyone to deny you these rights or to ask you to surrender the rights. 30 | These restrictions translate to certain responsibilities for you if you 31 | distribute copies of the software, or if you modify it. 32 | 33 | For example, if you distribute copies of such a program, whether 34 | gratis or for a fee, you must give the recipients all the rights that 35 | you have. You must make sure that they, too, receive or can get the 36 | source code. And you must show them these terms so they know their 37 | rights. 38 | 39 | We protect your rights with two steps: (1) copyright the software, and 40 | (2) offer you this license which gives you legal permission to copy, 41 | distribute and/or modify the software. 42 | 43 | Also, for each author's protection and ours, we want to make certain 44 | that everyone understands that there is no warranty for this free 45 | software. If the software is modified by someone else and passed on, we 46 | want its recipients to know that what they have is not the original, so 47 | that any problems introduced by others will not reflect on the original 48 | authors' reputations. 49 | 50 | Finally, any free program is threatened constantly by software 51 | patents. We wish to avoid the danger that redistributors of a free 52 | program will individually obtain patent licenses, in effect making the 53 | program proprietary. To prevent this, we have made it clear that any 54 | patent must be licensed for everyone's free use or not licensed at all. 55 | 56 | The precise terms and conditions for copying, distribution and 57 | modification follow. 58 | 59 | GNU GENERAL PUBLIC LICENSE 60 | TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION 61 | 62 | 0. This License applies to any program or other work which contains 63 | a notice placed by the copyright holder saying it may be distributed 64 | under the terms of this General Public License. The "Program", below, 65 | refers to any such program or work, and a "work based on the Program" 66 | means either the Program or any derivative work under copyright law: 67 | that is to say, a work containing the Program or a portion of it, 68 | either verbatim or with modifications and/or translated into another 69 | language. (Hereinafter, translation is included without limitation in 70 | the term "modification".) Each licensee is addressed as "you". 71 | 72 | Activities other than copying, distribution and modification are not 73 | covered by this License; they are outside its scope. The act of 74 | running the Program is not restricted, and the output from the Program 75 | is covered only if its contents constitute a work based on the 76 | Program (independent of having been made by running the Program). 77 | Whether that is true depends on what the Program does. 78 | 79 | 1. You may copy and distribute verbatim copies of the Program's 80 | source code as you receive it, in any medium, provided that you 81 | conspicuously and appropriately publish on each copy an appropriate 82 | copyright notice and disclaimer of warranty; keep intact all the 83 | notices that refer to this License and to the absence of any warranty; 84 | and give any other recipients of the Program a copy of this License 85 | along with the Program. 86 | 87 | You may charge a fee for the physical act of transferring a copy, and 88 | you may at your option offer warranty protection in exchange for a fee. 89 | 90 | 2. You may modify your copy or copies of the Program or any portion 91 | of it, thus forming a work based on the Program, and copy and 92 | distribute such modifications or work under the terms of Section 1 93 | above, provided that you also meet all of these conditions: 94 | 95 | a) You must cause the modified files to carry prominent notices 96 | stating that you changed the files and the date of any change. 97 | 98 | b) You must cause any work that you distribute or publish, that in 99 | whole or in part contains or is derived from the Program or any 100 | part thereof, to be licensed as a whole at no charge to all third 101 | parties under the terms of this License. 102 | 103 | c) If the modified program normally reads commands interactively 104 | when run, you must cause it, when started running for such 105 | interactive use in the most ordinary way, to print or display an 106 | announcement including an appropriate copyright notice and a 107 | notice that there is no warranty (or else, saying that you provide 108 | a warranty) and that users may redistribute the program under 109 | these conditions, and telling the user how to view a copy of this 110 | License. (Exception: if the Program itself is interactive but 111 | does not normally print such an announcement, your work based on 112 | the Program is not required to print an announcement.) 113 | 114 | These requirements apply to the modified work as a whole. If 115 | identifiable sections of that work are not derived from the Program, 116 | and can be reasonably considered independent and separate works in 117 | themselves, then this License, and its terms, do not apply to those 118 | sections when you distribute them as separate works. But when you 119 | distribute the same sections as part of a whole which is a work based 120 | on the Program, the distribution of the whole must be on the terms of 121 | this License, whose permissions for other licensees extend to the 122 | entire whole, and thus to each and every part regardless of who wrote it. 123 | 124 | Thus, it is not the intent of this section to claim rights or contest 125 | your rights to work written entirely by you; rather, the intent is to 126 | exercise the right to control the distribution of derivative or 127 | collective works based on the Program. 128 | 129 | In addition, mere aggregation of another work not based on the Program 130 | with the Program (or with a work based on the Program) on a volume of 131 | a storage or distribution medium does not bring the other work under 132 | the scope of this License. 133 | 134 | 3. You may copy and distribute the Program (or a work based on it, 135 | under Section 2) in object code or executable form under the terms of 136 | Sections 1 and 2 above provided that you also do one of the following: 137 | 138 | a) Accompany it with the complete corresponding machine-readable 139 | source code, which must be distributed under the terms of Sections 140 | 1 and 2 above on a medium customarily used for software interchange; or, 141 | 142 | b) Accompany it with a written offer, valid for at least three 143 | years, to give any third party, for a charge no more than your 144 | cost of physically performing source distribution, a complete 145 | machine-readable copy of the corresponding source code, to be 146 | distributed under the terms of Sections 1 and 2 above on a medium 147 | customarily used for software interchange; or, 148 | 149 | c) Accompany it with the information you received as to the offer 150 | to distribute corresponding source code. (This alternative is 151 | allowed only for noncommercial distribution and only if you 152 | received the program in object code or executable form with such 153 | an offer, in accord with Subsection b above.) 154 | 155 | The source code for a work means the preferred form of the work for 156 | making modifications to it. For an executable work, complete source 157 | code means all the source code for all modules it contains, plus any 158 | associated interface definition files, plus the scripts used to 159 | control compilation and installation of the executable. However, as a 160 | special exception, the source code distributed need not include 161 | anything that is normally distributed (in either source or binary 162 | form) with the major components (compiler, kernel, and so on) of the 163 | operating system on which the executable runs, unless that component 164 | itself accompanies the executable. 165 | 166 | If distribution of executable or object code is made by offering 167 | access to copy from a designated place, then offering equivalent 168 | access to copy the source code from the same place counts as 169 | distribution of the source code, even though third parties are not 170 | compelled to copy the source along with the object code. 171 | 172 | 4. You may not copy, modify, sublicense, or distribute the Program 173 | except as expressly provided under this License. Any attempt 174 | otherwise to copy, modify, sublicense or distribute the Program is 175 | void, and will automatically terminate your rights under this License. 176 | However, parties who have received copies, or rights, from you under 177 | this License will not have their licenses terminated so long as such 178 | parties remain in full compliance. 179 | 180 | 5. You are not required to accept this License, since you have not 181 | signed it. However, nothing else grants you permission to modify or 182 | distribute the Program or its derivative works. These actions are 183 | prohibited by law if you do not accept this License. Therefore, by 184 | modifying or distributing the Program (or any work based on the 185 | Program), you indicate your acceptance of this License to do so, and 186 | all its terms and conditions for copying, distributing or modifying 187 | the Program or works based on it. 188 | 189 | 6. Each time you redistribute the Program (or any work based on the 190 | Program), the recipient automatically receives a license from the 191 | original licensor to copy, distribute or modify the Program subject to 192 | these terms and conditions. You may not impose any further 193 | restrictions on the recipients' exercise of the rights granted herein. 194 | You are not responsible for enforcing compliance by third parties to 195 | this License. 196 | 197 | 7. If, as a consequence of a court judgment or allegation of patent 198 | infringement or for any other reason (not limited to patent issues), 199 | conditions are imposed on you (whether by court order, agreement or 200 | otherwise) that contradict the conditions of this License, they do not 201 | excuse you from the conditions of this License. If you cannot 202 | distribute so as to satisfy simultaneously your obligations under this 203 | License and any other pertinent obligations, then as a consequence you 204 | may not distribute the Program at all. For example, if a patent 205 | license would not permit royalty-free redistribution of the Program by 206 | all those who receive copies directly or indirectly through you, then 207 | the only way you could satisfy both it and this License would be to 208 | refrain entirely from distribution of the Program. 209 | 210 | If any portion of this section is held invalid or unenforceable under 211 | any particular circumstance, the balance of the section is intended to 212 | apply and the section as a whole is intended to apply in other 213 | circumstances. 214 | 215 | It is not the purpose of this section to induce you to infringe any 216 | patents or other property right claims or to contest validity of any 217 | such claims; this section has the sole purpose of protecting the 218 | integrity of the free software distribution system, which is 219 | implemented by public license practices. Many people have made 220 | generous contributions to the wide range of software distributed 221 | through that system in reliance on consistent application of that 222 | system; it is up to the author/donor to decide if he or she is willing 223 | to distribute software through any other system and a licensee cannot 224 | impose that choice. 225 | 226 | This section is intended to make thoroughly clear what is believed to 227 | be a consequence of the rest of this License. 228 | 229 | 8. If the distribution and/or use of the Program is restricted in 230 | certain countries either by patents or by copyrighted interfaces, the 231 | original copyright holder who places the Program under this License 232 | may add an explicit geographical distribution limitation excluding 233 | those countries, so that distribution is permitted only in or among 234 | countries not thus excluded. In such case, this License incorporates 235 | the limitation as if written in the body of this License. 236 | 237 | 9. The Free Software Foundation may publish revised and/or new versions 238 | of the General Public License from time to time. Such new versions will 239 | be similar in spirit to the present version, but may differ in detail to 240 | address new problems or concerns. 241 | 242 | Each version is given a distinguishing version number. If the Program 243 | specifies a version number of this License which applies to it and "any 244 | later version", you have the option of following the terms and conditions 245 | either of that version or of any later version published by the Free 246 | Software Foundation. If the Program does not specify a version number of 247 | this License, you may choose any version ever published by the Free Software 248 | Foundation. 249 | 250 | 10. If you wish to incorporate parts of the Program into other free 251 | programs whose distribution conditions are different, write to the author 252 | to ask for permission. For software which is copyrighted by the Free 253 | Software Foundation, write to the Free Software Foundation; we sometimes 254 | make exceptions for this. Our decision will be guided by the two goals 255 | of preserving the free status of all derivatives of our free software and 256 | of promoting the sharing and reuse of software generally. 257 | 258 | NO WARRANTY 259 | 260 | 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY 261 | FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN 262 | OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES 263 | PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED 264 | OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 265 | MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS 266 | TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE 267 | PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, 268 | REPAIR OR CORRECTION. 269 | 270 | 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING 271 | WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR 272 | REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, 273 | INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING 274 | OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED 275 | TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY 276 | YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER 277 | PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE 278 | POSSIBILITY OF SUCH DAMAGES. 279 | 280 | END OF TERMS AND CONDITIONS 281 | 282 | How to Apply These Terms to Your New Programs 283 | 284 | If you develop a new program, and you want it to be of the greatest 285 | possible use to the public, the best way to achieve this is to make it 286 | free software which everyone can redistribute and change under these terms. 287 | 288 | To do so, attach the following notices to the program. It is safest 289 | to attach them to the start of each source file to most effectively 290 | convey the exclusion of warranty; and each file should have at least 291 | the "copyright" line and a pointer to where the full notice is found. 292 | 293 | 294 | Copyright (C) 295 | 296 | This program is free software; you can redistribute it and/or modify 297 | it under the terms of the GNU General Public License as published by 298 | the Free Software Foundation; either version 2 of the License, or 299 | (at your option) any later version. 300 | 301 | This program is distributed in the hope that it will be useful, 302 | but WITHOUT ANY WARRANTY; without even the implied warranty of 303 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 304 | GNU General Public License for more details. 305 | 306 | You should have received a copy of the GNU General Public License along 307 | with this program; if not, write to the Free Software Foundation, Inc., 308 | 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. 309 | 310 | Also add information on how to contact you by electronic and paper mail. 311 | 312 | If the program is interactive, make it output a short notice like this 313 | when it starts in an interactive mode: 314 | 315 | Gnomovision version 69, Copyright (C) year name of author 316 | Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 317 | This is free software, and you are welcome to redistribute it 318 | under certain conditions; type `show c' for details. 319 | 320 | The hypothetical commands `show w' and `show c' should show the appropriate 321 | parts of the General Public License. Of course, the commands you use may 322 | be called something other than `show w' and `show c'; they could even be 323 | mouse-clicks or menu items--whatever suits your program. 324 | 325 | You should also get your employer (if you work as a programmer) or your 326 | school, if any, to sign a "copyright disclaimer" for the program, if 327 | necessary. Here is a sample; alter the names: 328 | 329 | Yoyodyne, Inc., hereby disclaims all copyright interest in the program 330 | `Gnomovision' (which makes passes at compilers) written by James Hacker. 331 | 332 | , 1 April 1989 333 | Ty Coon, President of Vice 334 | 335 | This General Public License does not permit incorporating your program into 336 | proprietary programs. If your program is a subroutine library, you may 337 | consider it more useful to permit linking proprietary applications with the 338 | library. If this is what you want to do, use the GNU Lesser General 339 | Public License instead of this License. 340 | --------------------------------------------------------------------------------