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#include "../include/DownloadUtils.hpp"
#include "../include/Program.hpp"
#include "../include/Storage.hpp"
#include "../include/NetUtils.hpp"
#include "../external/hash-library/sha256.h"
#include <unistd.h>
#include <limits.h>
#include <SFML/System/Clock.hpp>
#include <SFML/Window/Event.hpp>
#include <rapidjson/document.h>
#include <rapidjson/filereadstream.h>
static const bool debug_download = false;
static int accumulate_string(char *data, int size, void *userdata) {
std::string *str = (std::string*)userdata;
if(str->size() + size > 1024 * 1024 * 100) // 100mb sane limit, TODO: make configurable
return 1;
str->append(data, size);
return 0;
}
static const char *useragent_str = "user-agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/81.0.4044.138 Safari/537.36";
namespace QuickMedia {
DownloadResult download_head_to_string(const std::string &url, std::string &result, bool use_browser_useragent, bool fail_on_error) {
result.clear();
sf::Clock timer;
std::vector<const char*> args;
args.insert(args.end(), { "curl", "-I", "-g", "-H", "Accept-Language: en-US,en;q=0.5", "-H", "Connection: keep-alive", "--compressed", "-s" });
if(fail_on_error)
args.push_back("-f");
if(use_browser_useragent) {
args.push_back("-H");
args.push_back(useragent_str);
}
args.push_back("--");
args.push_back(url.c_str());
args.push_back(nullptr);
if(debug_download) {
for(const char *arg : args) {
if(arg)
fprintf(stderr, "'%s' ", arg);
}
fprintf(stderr, "\n");
}
if(exec_program(args.data(), accumulate_string, &result) != 0)
return DownloadResult::NET_ERR;
fprintf(stderr, "Download duration for %s: %d ms\n", url.c_str(), timer.getElapsedTime().asMilliseconds());
return DownloadResult::OK;
}
DownloadResult url_get_remote_name(const std::string &url, std::string &result, bool use_browser_useragent) {
result.clear();
sf::Clock timer;
std::vector<const char*> args;
args.insert(args.end(), { "curl", "-I", "-g", "-H", "Accept-Language: en-US,en;q=0.5", "-H", "Connection: keep-alive", "--compressed", "-s" });
if(use_browser_useragent) {
args.push_back("-H");
args.push_back(useragent_str);
}
args.push_back("--");
args.push_back(url.c_str());
args.push_back(nullptr);
if(debug_download) {
for(const char *arg : args) {
if(arg)
fprintf(stderr, "'%s' ", arg);
}
fprintf(stderr, "\n");
}
std::string header;
if(exec_program(args.data(), accumulate_string, &header) != 0)
return DownloadResult::NET_ERR;
fprintf(stderr, "Download duration for %s: %d ms\n", url.c_str(), timer.getElapsedTime().asMilliseconds());
std::string content_disposition = header_extract_value(header, "content-disposition");
size_t filename_start = content_disposition.find("filename=");
if(filename_start == std::string::npos) {
// TODO: after filename*= the encoding type will follow. We need to support other formats than utf-8 as well
filename_start = content_disposition.find("filename*=");
if(filename_start != std::string::npos) {
filename_start += 10;
filename_start = content_disposition.find("''", filename_start);
if(filename_start != std::string::npos)
filename_start += 2;
}
} else {
filename_start += 9;
}
if(filename_start == std::string::npos) {
size_t filename_start = url.rfind('/');
if(filename_start == std::string::npos) {
result = "";
return DownloadResult::OK;
}
++filename_start;
size_t filename_end = url.size();
for(size_t i = filename_start; i < url.size(); ++i) {
char c = url[i];
if(c == '/' || c == '&' || c == '?') {
filename_end = i;
break;
}
}
result = url_param_decode(url.substr(filename_start, filename_end - filename_start));
return DownloadResult::OK;
} else {
for(size_t i = filename_start; i < content_disposition.size(); ++i) {
char c = content_disposition[i];
if(c != '"' && c != ' ') {
filename_start = i;
break;
}
}
size_t filename_end = content_disposition.size();
for(int i = filename_end - 1; i >= (int)filename_start; --i) {
char c = content_disposition[i];
if(c != '"' && c != ' ' && c != '\n' && c != '\r') {
filename_end = i + 1;
break;
}
}
result = url_param_decode(content_disposition.substr(filename_start, filename_end - filename_start));
return DownloadResult::OK;
}
}
// TODO: Add timeout
DownloadResult download_to_string(const std::string &url, std::string &result, const std::vector<CommandArg> &additional_args, bool use_browser_useragent, bool fail_on_error) {
result.clear();
sf::Clock timer;
std::vector<const char*> args;
args.insert(args.end(), { "curl", "-H", "Accept-Language: en-US,en;q=0.5", "-H", "Connection: keep-alive", "--compressed", "-g", "-s", "-L" });
if(fail_on_error)
args.push_back("-f");
for(const CommandArg &arg : additional_args) {
args.push_back(arg.option.c_str());
if(!arg.value.empty())
args.push_back(arg.value.c_str());
}
if(use_browser_useragent) {
args.push_back("-H");
args.push_back(useragent_str);
}
args.push_back("--");
args.push_back(url.c_str());
args.push_back(nullptr);
if(debug_download) {
for(const char *arg : args) {
if(arg)
fprintf(stderr, "'%s' ", arg);
}
fprintf(stderr, "\n");
}
if(exec_program(args.data(), accumulate_string, &result) != 0)
return DownloadResult::NET_ERR;
fprintf(stderr, "Download duration for %s: %d ms\n", url.c_str(), timer.getElapsedTime().asMilliseconds());
return DownloadResult::OK;
}
DownloadResult download_to_string_cache(const std::string &url, std::string &result, const std::vector<CommandArg> &additional_args, bool use_browser_useragent, DownloadErrorHandler error_handler, Path cache_path) {
result.clear();
Path media_file_path;
if(cache_path.data.empty()) {
SHA256 sha256;
sha256.add(url.data(), url.size());
media_file_path = get_cache_dir().join("media").join(sha256.getHash());
} else {
media_file_path = std::move(cache_path);
}
if(get_file_type(media_file_path) == FileType::REGULAR) {
if(file_get_content(media_file_path, result) == 0) {
fprintf(stderr, "Loaded %s from cache\n", url.c_str());
return DownloadResult::OK;
} else {
fprintf(stderr, "Failed to get content of cached media file: %s\n", media_file_path.data.c_str());
return DownloadResult::ERR;
}
} else {
DownloadResult download_result = download_to_string(url, result, additional_args, use_browser_useragent, error_handler ? false : true);
if(download_result == DownloadResult::OK && error_handler)
download_result = error_handler(result) ? DownloadResult::OK : DownloadResult::ERR;
if(download_result == DownloadResult::OK)
download_result = file_overwrite_atomic(media_file_path, result) == 0 ? DownloadResult::OK : DownloadResult::ERR;
return download_result;
}
}
DownloadResult download_to_file(const std::string &url, const std::string &destination_filepath, const std::vector<CommandArg> &additional_args, bool use_browser_useragent) {
Path tmp_filepath = destination_filepath;
tmp_filepath.append(".tmp");
// TODO: Optimize with temporary '\0'
size_t dir_end = tmp_filepath.data.rfind('/');
if(dir_end != std::string::npos && create_directory_recursive(tmp_filepath.data.substr(0, dir_end)) != 0)
return DownloadResult::ERR;
std::vector<CommandArg> args = additional_args;
args.push_back({ "-o", tmp_filepath.data.c_str() });
std::string dummy;
DownloadResult res = download_to_string(url, dummy, std::move(args), use_browser_useragent);
if(res != DownloadResult::OK) return res;
if(rename_atomic(tmp_filepath.data.c_str(), destination_filepath.c_str()) != 0) {
perror("rename");
return DownloadResult::ERR;
}
return DownloadResult::OK;
}
bool download_async_gui(const std::string &url, const std::string &file_manager_start_dir, bool use_youtube_dl, bool no_video) {
char quickmedia_path[PATH_MAX];
ssize_t bytes_written = readlink("/proc/self/exe", quickmedia_path, sizeof(quickmedia_path));
if(bytes_written == -1 || bytes_written == sizeof(quickmedia_path))
strcpy(quickmedia_path, "quickmedia");
else
quickmedia_path[bytes_written] = '\0';
std::vector<const char*> args = { quickmedia_path, "download", "-u", url.c_str(), "--dir", file_manager_start_dir.c_str() };
if(use_youtube_dl) args.push_back("--youtube-dl");
if(no_video) args.push_back("--no-video");
args.push_back(nullptr);
return exec_program_async(args.data(), nullptr) == 0;
}
// TODO: Add timeout
DownloadResult download_to_json(const std::string &url, rapidjson::Document &result, const std::vector<CommandArg> &additional_args, bool use_browser_useragent, bool fail_on_error) {
sf::Clock timer;
std::vector<const char*> args;
args.insert(args.end(), { "curl", "-H", "Accept-Language: en-US,en;q=0.5", "-H", "Connection: keep-alive", "--compressed", "-g", "-s", "-L" });
if(fail_on_error)
args.push_back("-f");
for(const CommandArg &arg : additional_args) {
args.push_back(arg.option.c_str());
if(!arg.value.empty())
args.push_back(arg.value.c_str());
}
if(use_browser_useragent) {
args.push_back("-H");
args.push_back(useragent_str);
}
args.push_back("--");
args.push_back(url.c_str());
args.push_back(nullptr);
if(debug_download) {
for(const char *arg : args) {
if(arg)
fprintf(stderr, "'%s' ", arg);
}
fprintf(stderr, "\n");
}
ReadProgram read_program;
if(exec_program_pipe(args.data(), &read_program) != 0)
return DownloadResult::NET_ERR;
FILE *file = fdopen(read_program.read_fd, "rb");
if(!file) {
program_clear_current_thread();
wait_program(read_program.pid);
return DownloadResult::ERR;
}
char read_buffer[8192];
rapidjson::FileReadStream is(file, read_buffer, sizeof(read_buffer));
rapidjson::ParseResult parse_result = result.ParseStream(is);
program_clear_current_thread();
fclose(file);
wait_program(read_program.pid);
fprintf(stderr, "Download duration for %s: %d ms\n", url.c_str(), timer.getElapsedTime().asMilliseconds());
return parse_result.IsError() ? DownloadResult::ERR : DownloadResult::OK;
}
}
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