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                    // Solver returned something that is not a captcha code (it was down
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                    // Solver returned something that is not a captcha code (it was down
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                    // for 46 days returning an nginx 502 page, which used to be submitted
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                    // for 46 days returning an nginx 502 page, which used to be submitted
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                    // to Vivo verbatim). Skip; this IMEI is picked up on the next run.
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                    // to Vivo verbatim). Skip; this IMEI is picked up on the next run.
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                    continue;
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                    continue;
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                }
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                }
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                this.getImeiActivation(captcha, httpClient, imeiActivationTimestampModel);
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                this.getImeiActivation(captcha, httpClient, cookieStore, imeiActivationTimestampModel);
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            }
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            }
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        }
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        }
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    }
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    }
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    /** A solved captcha: the code, plus the image it came from so the verdict can be reported. */
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    /** A solved captcha: the code, plus the image it came from so the verdict can be reported. */
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    static final class Captcha {
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    static final class Captcha {
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        final String code;
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        final String code;
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        final byte[] image;
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        final byte[] image;
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        final long fetchedAt;
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        Captcha(String code, byte[] image) {
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        Captcha(String code, byte[] image) {
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            this.code = code;
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            this.code = code;
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            this.image = image;
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            this.image = image;
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            this.fetchedAt = System.currentTimeMillis();
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        }
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        }
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    }
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    }
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    public Captcha getNewCaptcha(CloseableHttpClient httpClient, BasicCookieStore cookieStore) throws Exception {
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    public Captcha getNewCaptcha(CloseableHttpClient httpClient, BasicCookieStore cookieStore) throws Exception {
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        HttpGet request = new HttpGet("https://www.vivo.com/in/support/generatingCodes");
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        HttpGet request = new HttpGet("https://www.vivo.com/in/support/generatingCodes");
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        String code = captchaService.getCaptchaCode(bytes);
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        String code = captchaService.getCaptchaCode(bytes);
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        return code == null ? null : new Captcha(code, bytes);
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        return code == null ? null : new Captcha(code, bytes);
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    }
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    }
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    public void getImeiActivation(Captcha captcha, CloseableHttpClient httpClient,
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    public void getImeiActivation(Captcha captcha, CloseableHttpClient httpClient,
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                                  BasicCookieStore cookieStore,
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                                  ImeiActivationTimestampModel vivoImeiAndActivationTimeStampModel) throws Exception {
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                                  ImeiActivationTimestampModel vivoImeiAndActivationTimeStampModel) throws Exception {
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        String imei = vivoImeiAndActivationTimeStampModel.getSerialNumber();
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        String imei = vivoImeiAndActivationTimeStampModel.getSerialNumber();
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        List<NameValuePair> form = new ArrayList<>();
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        List<NameValuePair> form = new ArrayList<>();
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        // Vivo is the only judge of whether our guess was right; status 0 means the
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        // Vivo is the only judge of whether our guess was right; status 0 means the
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        // captcha was wrong. Hand that back so the sample becomes training data.
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        // captcha was wrong. Hand that back so the sample becomes training data.
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        captchaService.reportVerdict(captcha.image, captcha.code, status != 0);
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        captchaService.reportVerdict(captcha.image, captcha.code, status != 0);
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        if (status == 0) {
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        if (status == 0) {
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            // Vivo refuses ~56% of submissions in production, but reading the stored
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            // images by hand showed 9 of 10 carried the CORRECT code, and no external
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            // replication reproduces it (IMEI, user-agent, session reuse, concurrency,
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            // source IP and submit delay were all measured and ruled out). The old log
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            // line recorded five words and discarded the evidence, so capture it:
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            // the code submitted, the imei, how long fetch->submit actually took inside
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            // this process, the session cookies held at submit time, and Vivo's reply.
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            LOGGER.info("Vivo rejected captcha code={} imei={} elapsedMs={} cookies={} response={}",
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                    captcha.code, imei, System.currentTimeMillis() - captcha.fetchedAt,
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            LOGGER.info("Found invalid captcha");
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                    cookieStore.getCookies(), imeiActivationJson);
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            return;
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            return;
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        } else if (status == 2) {
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        } else if (status == 2) {
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            LOGGER.info("Received status 2 for {}, data {}", imei, data);
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            LOGGER.info("Received status 2 for {}, data {}", imei, data);
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            activatedImeiRepository.saveActivation(imei, null);
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            activatedImeiRepository.saveActivation(imei, null);
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            return;
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            return;