diff options
Diffstat (limited to 'src/GoogleCaptcha.cpp')
| -rw-r--r-- | src/GoogleCaptcha.cpp | 160 |
1 files changed, 0 insertions, 160 deletions
diff --git a/src/GoogleCaptcha.cpp b/src/GoogleCaptcha.cpp deleted file mode 100644 index 137eb24..0000000 --- a/src/GoogleCaptcha.cpp +++ /dev/null @@ -1,160 +0,0 @@ -#include "../include/GoogleCaptcha.hpp" -#include "../include/StringUtils.hpp" -#include "../include/DownloadUtils.hpp" - -namespace QuickMedia { - static bool google_captcha_response_extract_id(const std::string& html, std::string& result) - { - size_t value_index = html.find("value=\""); - if(value_index == std::string::npos) - return false; - - size_t value_begin = value_index + 7; - size_t value_end = html.find('"', value_begin); - if(value_end == std::string::npos) - return false; - - size_t value_length = value_end - value_begin; - // The id is also only valid if it's in base64, but it might be overkill to verify if it's base64 here - if(value_length < 300) - return false; - - result = html.substr(value_begin, value_length); - return true; - } - - static bool google_captcha_response_extract_goal_description(const std::string& html, std::string& result) - { - size_t goal_description_begin = html.find("rc-imageselect-desc-no-canonical"); - if(goal_description_begin == std::string::npos) { - goal_description_begin = html.find("rc-imageselect-desc"); - if(goal_description_begin == std::string::npos) - return false; - } - - goal_description_begin = html.find('>', goal_description_begin); - if(goal_description_begin == std::string::npos) - return false; - - goal_description_begin += 1; - - size_t goal_description_end = html.find("</div", goal_description_begin); - if(goal_description_end == std::string::npos) - return false; - - // The goal description with google captcha right now is "Select all images with <strong>subject</strong>". - // TODO: Should the subject be extracted, so bold styling can be applied to it? - result = html.substr(goal_description_begin, goal_description_end - goal_description_begin); - string_replace_all(result, "<strong>", ""); - string_replace_all(result, "</strong>", ""); - return true; - } - - static std::optional<GoogleCaptchaChallengeInfo> google_captcha_parse_request_challenge_response(const std::string& api_key, const std::string& html_source) - { - GoogleCaptchaChallengeInfo result; - if(!google_captcha_response_extract_id(html_source, result.id)) - return std::nullopt; - result.payload_url = "https://www.google.com/recaptcha/api2/payload?c=" + result.id + "&k=" + api_key; - if(!google_captcha_response_extract_goal_description(html_source, result.description)) - return std::nullopt; - return result; - } - - // Note: This assumes strings (quoted data) in html tags dont contain '<' or '>' - static std::string strip_html_tags(const std::string& text) - { - std::string result; - size_t index = 0; - while(true) - { - size_t tag_start_index = text.find('<', index); - if(tag_start_index == std::string::npos) - { - result.append(text.begin() + index, text.end()); - break; - } - - result.append(text.begin() + index, text.begin() + tag_start_index); - - size_t tag_end_index = text.find('>', tag_start_index + 1); - if(tag_end_index == std::string::npos) - break; - index = tag_end_index + 1; - } - return result; - } - - static std::optional<std::string> google_captcha_parse_submit_solution_response(const std::string& html_source) - { - size_t start_index = html_source.find("\"fbc-verification-token\">"); - if(start_index == std::string::npos) - return std::nullopt; - - start_index += 25; - size_t end_index = html_source.find("</", start_index); - if(end_index == std::string::npos) - return std::nullopt; - - return strip_html_tags(html_source.substr(start_index, end_index - start_index)); - } - - AsyncTask<bool> google_captcha_request_challenge(const std::string &api_key, const std::string &referer, RequestChallengeResponse challenge_response_callback) { - return AsyncTask<bool>([challenge_response_callback, api_key, referer]() { - std::string captcha_url = "https://www.google.com/recaptcha/api/fallback?k=" + api_key; - std::string response; - std::vector<CommandArg> additional_args = { - CommandArg{"-H", "Referer: " + referer} - }; - DownloadResult download_result = download_to_string(captcha_url, response, additional_args); - if(download_result == DownloadResult::OK) { - //fprintf(stderr, "Failed to get captcha, response: %s\n", response.c_str()); - challenge_response_callback(google_captcha_parse_request_challenge_response(api_key, response)); - return true; - } else { - fprintf(stderr, "Failed to get captcha, response: %s\n", response.c_str()); - challenge_response_callback(std::nullopt); - return false; - } - }); - } - - static std::string build_post_solution_response(std::array<bool, 9> selected_images) { - std::string result; - for(size_t i = 0; i < selected_images.size(); ++i) { - if(selected_images[i]) { - if(!result.empty()) - result += "&"; - result += "response=" + std::to_string(i); - } - } - return result; - } - - AsyncTask<bool> google_captcha_post_solution(const std::string &api_key, const std::string &captcha_id, std::array<bool, 9> selected_images, PostSolutionResponse solution_response_callback) { - return AsyncTask<bool>([solution_response_callback, api_key, captcha_id, selected_images]() { - std::string captcha_url = "https://www.google.com/recaptcha/api/fallback?k=" + api_key; - std::string response; - std::vector<CommandArg> additional_args = { - CommandArg{"-H", "Referer: " + captcha_url}, - CommandArg{"--data", "c=" + captcha_id + "&" + build_post_solution_response(selected_images)} - }; - DownloadResult post_result = download_to_string(captcha_url, response, additional_args); - if(post_result == DownloadResult::OK) { - //fprintf(stderr, "Failed to post captcha solution, response: %s\n", response.c_str()); - std::optional<std::string> captcha_post_id = google_captcha_parse_submit_solution_response(response); - if(captcha_post_id) { - solution_response_callback(std::move(captcha_post_id), std::nullopt); - } else { - std::optional<GoogleCaptchaChallengeInfo> challenge_info = google_captcha_parse_request_challenge_response(api_key, response); - solution_response_callback(std::nullopt, std::move(challenge_info)); - } - return true; - } else { - fprintf(stderr, "Failed to post captcha solution, response: %s\n", response.c_str()); - solution_response_callback(std::nullopt, std::nullopt); - return false; - } - }); - } -}
\ No newline at end of file |