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libkiwix/src/server/internalServer.cpp

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/*
* Copyright 2019 Matthieu Gautier <mgautier@kymeria.fr>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301, USA.
*/
#include "internalServer.h"
#ifdef __FreeBSD__
#include <netinet/in.h>
#endif
#ifdef _WIN32
# if !defined(__MINGW32__) && (_MSC_VER < 1600)
# include "stdint4win.h"
# endif
# include <winsock2.h>
# include <ws2tcpip.h>
# ifdef __GNUC__
// inet_pton is not declared in mingw, even if the function exists.
extern "C" {
WINSOCK_API_LINKAGE INT WSAAPI inet_pton( INT Family, PCSTR pszAddrString, PVOID pAddrBuf);
}
# endif
typedef UINT64 uint64_t;
typedef UINT16 uint16_t;
#endif
extern "C" {
#include "microhttpd_wrapper.h"
}
#include "tools.h"
#include "tools/pathTools.h"
#include "tools/regexTools.h"
#include "tools/stringTools.h"
#include "tools/archiveTools.h"
#include "tools/networkTools.h"
#include "library.h"
#include "name_mapper.h"
#include "entry.h"
#include "searcher.h"
#include "search_renderer.h"
#include "opds_dumper.h"
#include <zim/uuid.h>
#include <zim/error.h>
#include <zim/entry.h>
#include <zim/item.h>
#include <mustache.hpp>
#include <atomic>
#include <string>
#include <vector>
#include <chrono>
#include "kiwixlib-resources.h"
#ifndef _WIN32
# include <arpa/inet.h>
#endif
#include "request_context.h"
#include "response.h"
#define MAX_SEARCH_LEN 140
#define KIWIX_MIN_CONTENT_SIZE_TO_DEFLATE 100
#define DEFAULT_CACHE_SIZE 2
namespace kiwix {
namespace
{
inline std::string normalizeRootUrl(std::string rootUrl)
{
while ( !rootUrl.empty() && rootUrl.back() == '/' )
rootUrl.pop_back();
while ( !rootUrl.empty() && rootUrl.front() == '/' )
rootUrl = rootUrl.substr(1);
return rootUrl.empty() ? rootUrl : "/" + rootUrl;
}
// Returns the value of env var `name` if found, otherwise returns defaultVal
unsigned int getCacheLength(const char* name, unsigned int defaultVal) {
try {
const char* envString = std::getenv(name);
if (envString == nullptr) {
throw std::runtime_error("Environment variable not set");
}
return extractFromString<unsigned int>(envString);
} catch (...) {}
return defaultVal;
}
} // unnamed namespace
SearchInfo::SearchInfo(const std::string& pattern)
: pattern(pattern),
geoQuery()
{}
SearchInfo::SearchInfo(const std::string& pattern, GeoQuery geoQuery)
: pattern(pattern),
geoQuery(geoQuery)
{}
SearchInfo::SearchInfo(const RequestContext& request)
: pattern(request.get_optional_param<std::string>("pattern", "")),
geoQuery(),
bookName(request.get_optional_param<std::string>("content", ""))
{
/* Retrive geo search */
try {
auto latitude = request.get_argument<float>("latitude");
auto longitude = request.get_argument<float>("longitude");
auto distance = request.get_argument<float>("distance");
geoQuery = GeoQuery(latitude, longitude, distance);
} catch(const std::out_of_range&) {}
catch(const std::invalid_argument&) {}
if (!geoQuery && pattern.empty()) {
throw std::invalid_argument("No query provided.");
}
}
zim::Query SearchInfo::getZimQuery(bool verbose) const {
zim::Query query;
if (verbose) {
std::cout << "Performing query '" << pattern<< "'";
}
query.setQuery(pattern);
if (geoQuery) {
if (verbose) {
std::cout << " with geo query '" << geoQuery.distance << "&(" << geoQuery.latitude << ";" << geoQuery.longitude << ")'";
}
query.setGeorange(geoQuery.latitude, geoQuery.longitude, geoQuery.distance);
}
if (verbose) {
std::cout << std::endl;
}
return query;
}
static IdNameMapper defaultNameMapper;
static MHD_Result staticHandlerCallback(void* cls,
struct MHD_Connection* connection,
const char* url,
const char* method,
const char* version,
const char* upload_data,
size_t* upload_data_size,
void** cont_cls);
InternalServer::InternalServer(Library* library,
NameMapper* nameMapper,
std::string addr,
int port,
std::string root,
int nbThreads,
bool verbose,
bool withTaskbar,
bool withLibraryButton,
bool blockExternalLinks,
std::string indexTemplateString,
int ipConnectionLimit) :
m_addr(addr),
m_port(port),
m_root(normalizeRootUrl(root)),
m_nbThreads(nbThreads),
m_verbose(verbose),
m_withTaskbar(withTaskbar),
m_withLibraryButton(withLibraryButton),
m_blockExternalLinks(blockExternalLinks),
m_indexTemplateString(indexTemplateString.empty() ? RESOURCE::templates::index_html : indexTemplateString),
m_ipConnectionLimit(ipConnectionLimit),
mp_daemon(nullptr),
mp_library(library),
mp_nameMapper(nameMapper ? nameMapper : &defaultNameMapper),
searcherCache(getCacheLength("SEARCHER_CACHE_SIZE", std::max((unsigned int) (mp_library->getBookCount(true, true)*0.1), 1U))),
searchCache(getCacheLength("SEARCH_CACHE_SIZE", DEFAULT_CACHE_SIZE)),
suggestionSearcherCache(getCacheLength("SUGGESTION_SEARCHER_CACHE_SIZE", std::max((unsigned int) (mp_library->getBookCount(true, true)*0.1), 1U)))
{}
bool InternalServer::start() {
#ifdef _WIN32
int flags = MHD_USE_SELECT_INTERNALLY;
#else
int flags = MHD_USE_POLL_INTERNALLY;
#endif
if (m_verbose.load())
flags |= MHD_USE_DEBUG;
struct sockaddr_in sockAddr;
memset(&sockAddr, 0, sizeof(sockAddr));
sockAddr.sin_family = AF_INET;
sockAddr.sin_port = htons(m_port);
if (m_addr.empty()) {
if (0 != INADDR_ANY) {
sockAddr.sin_addr.s_addr = htonl(INADDR_ANY);
}
m_addr = kiwix::getBestPublicIp();
} else {
if (inet_pton(AF_INET, m_addr.c_str(), &(sockAddr.sin_addr.s_addr)) == 0) {
std::cerr << "Ip address " << m_addr << " is not a valid ip address" << std::endl;
return false;
}
}
mp_daemon = MHD_start_daemon(flags,
m_port,
NULL,
NULL,
&staticHandlerCallback,
this,
MHD_OPTION_SOCK_ADDR, &sockAddr,
MHD_OPTION_THREAD_POOL_SIZE, m_nbThreads,
MHD_OPTION_PER_IP_CONNECTION_LIMIT, m_ipConnectionLimit,
MHD_OPTION_END);
if (mp_daemon == nullptr) {
std::cerr << "Unable to instantiate the HTTP daemon. The port " << m_port
<< " is maybe already occupied or need more permissions to be open. "
"Please try as root or with a port number higher or equal to 1024."
<< std::endl;
return false;
}
auto server_start_time = std::chrono::system_clock::now().time_since_epoch();
m_server_id = kiwix::to_string(server_start_time.count());
m_library_id = m_server_id;
return true;
}
void InternalServer::stop()
{
MHD_stop_daemon(mp_daemon);
}
static MHD_Result staticHandlerCallback(void* cls,
struct MHD_Connection* connection,
const char* url,
const char* method,
const char* version,
const char* upload_data,
size_t* upload_data_size,
void** cont_cls)
{
InternalServer* _this = static_cast<InternalServer*>(cls);
return _this->handlerCallback(connection,
url,
method,
version,
upload_data,
upload_data_size,
cont_cls);
}
MHD_Result InternalServer::handlerCallback(struct MHD_Connection* connection,
const char* url,
const char* method,
const char* version,
const char* upload_data,
size_t* upload_data_size,
void** cont_cls)
{
auto start_time = std::chrono::steady_clock::now();
if (m_verbose.load() ) {
printf("======================\n");
printf("Requesting : \n");
printf("full_url : %s\n", url);
}
RequestContext request(connection, m_root, url, method, version);
if (m_verbose.load() ) {
request.print_debug_info();
}
/* Unexpected method */
if (request.get_method() != RequestMethod::GET
&& request.get_method() != RequestMethod::POST
&& request.get_method() != RequestMethod::HEAD) {
printf("Reject request because of unhandled request method.\n");
printf("----------------------\n");
return MHD_NO;
}
auto response = handle_request(request);
if (response->getReturnCode() == MHD_HTTP_INTERNAL_SERVER_ERROR) {
printf("========== INTERNAL ERROR !! ============\n");
if (!m_verbose.load()) {
printf("Requesting : \n");
printf("full_url : %s\n", url);
request.print_debug_info();
}
}
if (response->getReturnCode() == MHD_HTTP_OK && !etag_not_needed(request))
response->set_server_id(m_server_id);
auto ret = response->send(request, connection);
auto end_time = std::chrono::steady_clock::now();
auto time_span = std::chrono::duration_cast<std::chrono::duration<double>>(end_time - start_time);
if (m_verbose.load()) {
printf("Request time : %fs\n", time_span.count());
printf("----------------------\n");
}
return ret;
}
std::unique_ptr<Response> InternalServer::handle_request(const RequestContext& request)
{
try {
if (! request.is_valid_url()) {
return HTTP404HtmlResponse(*this, request)
+ urlNotFoundMsg;
}
const ETag etag = get_matching_if_none_match_etag(request);
if ( etag )
return Response::build_304(*this, etag);
if (startsWith(request.get_url(), "/skin/"))
return handle_skin(request);
if (startsWith(request.get_url(), "/catalog/"))
return handle_catalog(request);
if (startsWith(request.get_url(), "/raw/"))
return handle_raw(request);
if (request.get_url() == "/search")
return handle_search(request);
if (request.get_url() == "/suggest")
return handle_suggest(request);
if (request.get_url() == "/random")
return handle_random(request);
if (request.get_url() == "/catch/external")
return handle_captured_external(request);
return handle_content(request);
} catch (std::exception& e) {
fprintf(stderr, "===== Unhandled error : %s\n", e.what());
return Response::build_500(*this, e.what());
} catch (...) {
fprintf(stderr, "===== Unhandled unknown error\n");
return Response::build_500(*this, "Unknown error");
}
}
MustacheData InternalServer::get_default_data() const
{
MustacheData data;
data.set("root", m_root);
return data;
}
bool InternalServer::etag_not_needed(const RequestContext& request) const
{
const std::string url = request.get_url();
return kiwix::startsWith(url, "/catalog")
|| url == "/search"
|| url == "/suggest"
|| url == "/random"
|| url == "/catch/external";
}
ETag
InternalServer::get_matching_if_none_match_etag(const RequestContext& r) const
{
try {
const std::string etag_list = r.get_header(MHD_HTTP_HEADER_IF_NONE_MATCH);
return ETag::match(etag_list, m_server_id);
} catch (const std::out_of_range&) {
return ETag();
}
}
std::unique_ptr<Response> InternalServer::build_homepage(const RequestContext& request)
{
return ContentResponse::build(*this, m_indexTemplateString, get_default_data(), "text/html; charset=utf-8", true);
}
/**
* Archive and Zim handlers begin
**/
SuggestionsList_t getSuggestions(SuggestionSearcherCache& cache, const zim::Archive* const archive,
const std::string& bookId, const std::string& queryString, int start, int suggestionCount)
{
SuggestionsList_t suggestions;
std::shared_ptr<zim::SuggestionSearcher> searcher;
searcher = cache.getOrPut(bookId, [=](){ return make_shared<zim::SuggestionSearcher>(*archive); });
if (archive->hasTitleIndex()) {
auto search = searcher->suggest(queryString);
auto srs = search.getResults(start, suggestionCount);
for (auto it : srs) {
SuggestionItem suggestion(it.getTitle(), kiwix::normalize(it.getTitle()),
it.getPath(), it.getSnippet());
suggestions.push_back(suggestion);
}
} else {
// TODO: This case should be handled by libzim
std::vector<std::string> variants = getTitleVariants(queryString);
int currCount = 0;
for (auto it = variants.begin(); it != variants.end() && currCount < suggestionCount; it++) {
auto search = searcher->suggest(queryString);
auto srs = search.getResults(0, suggestionCount);
for (auto it : srs) {
SuggestionItem suggestion(it.getTitle(), kiwix::normalize(it.getTitle()),
it.getPath());
suggestions.push_back(suggestion);
currCount++;
}
}
}
return suggestions;
}
namespace
{
std::string noSuchBookErrorMsg(const std::string& bookName)
{
return "No such book: " + bookName;
}
} // unnamed namespace
std::unique_ptr<Response> InternalServer::handle_suggest(const RequestContext& request)
{
if (m_verbose.load()) {
printf("** running handle_suggest\n");
}
std::string bookName, bookId;
std::shared_ptr<zim::Archive> archive;
try {
bookName = request.get_argument("content");
bookId = mp_nameMapper->getIdForName(bookName);
archive = mp_library->getArchiveById(bookId);
} catch (const std::out_of_range&) {
// error handled by the archive == nullptr check below
}
if (archive == nullptr) {
return HTTP404HtmlResponse(*this, request)
+ noSuchBookErrorMsg(bookName)
+ TaskbarInfo(bookName);
}
const auto queryString = request.get_optional_param("term", std::string());
const auto start = request.get_optional_param<unsigned int>("start", 0);
unsigned int count = request.get_optional_param<unsigned int>("count", 10);
if (count == 0) {
count = 10;
}
if (m_verbose.load()) {
printf("Searching suggestions for: \"%s\"\n", queryString.c_str());
}
MustacheData results{MustacheData::type::list};
bool first = true;
/* Get the suggestions */
SuggestionsList_t suggestions = getSuggestions(suggestionSearcherCache, archive.get(),
bookId, queryString, start, count);
for(auto& suggestion:suggestions) {
MustacheData result;
result.set("label", suggestion.getTitle());
if (suggestion.hasSnippet()) {
result.set("label", suggestion.getSnippet());
}
result.set("value", suggestion.getTitle());
result.set("kind", "path");
result.set("path", suggestion.getPath());
result.set("first", first);
first = false;
results.push_back(result);
}
/* Propose the fulltext search if possible */
if (archive->hasFulltextIndex()) {
MustacheData result;
result.set("label", "containing '" + queryString + "'...");
result.set("value", queryString + " ");
result.set("kind", "pattern");
result.set("first", first);
results.push_back(result);
}
auto data = get_default_data();
data.set("suggestions", results);
auto response = ContentResponse::build(*this, RESOURCE::templates::suggestion_json, data, "application/json; charset=utf-8");
return std::move(response);
}
std::unique_ptr<Response> InternalServer::handle_skin(const RequestContext& request)
{
if (m_verbose.load()) {
printf("** running handle_skin\n");
}
auto resourceName = request.get_url().substr(1);
try {
auto response = ContentResponse::build(
*this,
getResource(resourceName),
getMimeTypeForFile(resourceName));
response->set_cacheable();
return std::move(response);
} catch (const ResourceNotFound& e) {
return HTTP404HtmlResponse(*this, request)
+ urlNotFoundMsg;
}
}
std::unique_ptr<Response> InternalServer::handle_search(const RequestContext& request)
{
if (m_verbose.load()) {
printf("** running handle_search\n");
}
try {
auto searchInfo = SearchInfo(request);
std::string bookId;
std::shared_ptr<zim::Archive> archive;
if (!searchInfo.bookName.empty()) {
try {
bookId = mp_nameMapper->getIdForName(searchInfo.bookName);
archive = mp_library->getArchiveById(bookId);
} catch (const std::out_of_range&) {
throw std::invalid_argument("The requested book doesn't exist.");
}
}
/* Make the search */
// Try to get a search from the searchInfo, else build it
std::shared_ptr<zim::Search> search;
try {
search = searchCache.getOrPut(searchInfo,
[=](){
std::shared_ptr<zim::Searcher> searcher;
if (archive) {
searcher = searcherCache.getOrPut(bookId, [=](){ return std::make_shared<zim::Searcher>(*archive);});
} else {
for (auto& bookId: mp_library->filter(kiwix::Filter().local(true).valid(true))) {
auto currentArchive = mp_library->getArchiveById(bookId);
if (currentArchive) {
if (! searcher) {
searcher = std::make_shared<zim::Searcher>(*currentArchive);
} else {
searcher->addArchive(*currentArchive);
}
}
}
}
return make_shared<zim::Search>(searcher->search(searchInfo.getZimQuery(m_verbose.load())));
}
);
} catch(std::runtime_error& e) {
// Searcher->search will throw a runtime error if there is no valid xapian database to do the search.
// (in case of zim file not containing a index)
auto data = get_default_data();
data.set("pattern", encodeDiples(searchInfo.pattern));
auto response = ContentResponse::build(*this, RESOURCE::templates::no_search_result_html, data, "text/html; charset=utf-8");
response->set_code(MHD_HTTP_NOT_FOUND);
response->set_taskbar(searchInfo.bookName, archive.get());
return std::move(response);
}
auto start = 0;
try {
start = request.get_argument<unsigned int>("start");
} catch (const std::exception&) {}
auto pageLength = 25;
try {
pageLength = request.get_argument<unsigned int>("pageLength");
} catch (const std::exception&) {}
if (pageLength > MAX_SEARCH_LEN) {
pageLength = MAX_SEARCH_LEN;
}
if (pageLength == 0) {
pageLength = 25;
}
/* Get the results */
SearchRenderer renderer(search->getResults(start, pageLength), mp_nameMapper, mp_library, start,
search->getEstimatedMatches());
renderer.setSearchPattern(searchInfo.pattern);
renderer.setSearchContent(searchInfo.bookName);
renderer.setProtocolPrefix(m_root + "/");
renderer.setSearchProtocolPrefix(m_root + "/search?");
renderer.setPageLength(pageLength);
auto response = ContentResponse::build(*this, renderer.getHtml(), "text/html; charset=utf-8");
response->set_taskbar(searchInfo.bookName, archive.get());
return std::move(response);
} catch (const std::invalid_argument& e) {
return HTTP400HtmlResponse(*this, request)
+ invalidUrlMsg
+ std::string(e.what());
} catch (const std::exception& e) {
std::cerr << e.what() << std::endl;
return Response::build_500(*this, e.what());
}
}
std::unique_ptr<Response> InternalServer::handle_random(const RequestContext& request)
{
if (m_verbose.load()) {
printf("** running handle_random\n");
}
std::string bookName;
std::shared_ptr<zim::Archive> archive;
try {
bookName = request.get_argument("content");
const std::string bookId = mp_nameMapper->getIdForName(bookName);
archive = mp_library->getArchiveById(bookId);
} catch (const std::out_of_range&) {
// error handled by the archive == nullptr check below
}
if (archive == nullptr) {
return HTTP404HtmlResponse(*this, request)
+ noSuchBookErrorMsg(bookName)
+ TaskbarInfo(bookName);
}
try {
auto entry = archive->getRandomEntry();
return build_redirect(bookName, getFinalItem(*archive, entry));
} catch(zim::EntryNotFound& e) {
const std::string error_details = "Oops! Failed to pick a random article :(";
return HTTP404HtmlResponse(*this, request)
+ error_details
+ TaskbarInfo(bookName, archive.get());
}
}
std::unique_ptr<Response> InternalServer::handle_captured_external(const RequestContext& request)
{
std::string source = "";
try {
source = kiwix::urlDecode(request.get_argument("source"));
} catch (const std::out_of_range& e) {}
if (source.empty()) {
return HTTP404HtmlResponse(*this, request)
+ urlNotFoundMsg;
}
auto data = get_default_data();
data.set("source", source);
return ContentResponse::build(*this, RESOURCE::templates::captured_external_html, data, "text/html; charset=utf-8");
}
std::unique_ptr<Response> InternalServer::handle_catalog(const RequestContext& request)
{
if (m_verbose.load()) {
printf("** running handle_catalog");
}
std::string host;
std::string url;
try {
host = request.get_header("Host");
url = request.get_url_part(1);
} catch (const std::out_of_range&) {
return HTTP404HtmlResponse(*this, request)
+ urlNotFoundMsg;
}
if (url == "v2") {
return handle_catalog_v2(request);
}
if (url != "searchdescription.xml" && url != "root.xml" && url != "search") {
return HTTP404HtmlResponse(*this, request)
+ urlNotFoundMsg;
}
if (url == "searchdescription.xml") {
auto response = ContentResponse::build(*this, RESOURCE::opensearchdescription_xml, get_default_data(), "application/opensearchdescription+xml");
return std::move(response);
}
zim::Uuid uuid;
kiwix::OPDSDumper opdsDumper(mp_library);
opdsDumper.setRootLocation(m_root);
opdsDumper.setLibraryId(m_library_id);
std::vector<std::string> bookIdsToDump;
if (url == "root.xml") {
uuid = zim::Uuid::generate(host);
bookIdsToDump = mp_library->filter(kiwix::Filter().valid(true).local(true).remote(true));
} else if (url == "search") {
bookIdsToDump = search_catalog(request, opdsDumper);
uuid = zim::Uuid::generate();
}
auto response = ContentResponse::build(
*this,
opdsDumper.dumpOPDSFeed(bookIdsToDump, request.get_query()),
"application/atom+xml; profile=opds-catalog; kind=acquisition; charset=utf-8");
return std::move(response);
}
namespace
{
Filter get_search_filter(const RequestContext& request)
{
auto filter = kiwix::Filter().valid(true).local(true);
try {
filter.query(request.get_argument("q"));
} catch (const std::out_of_range&) {}
try {
filter.maxSize(request.get_argument<unsigned long>("maxsize"));
} catch (...) {}
try {
filter.name(request.get_argument("name"));
} catch (const std::out_of_range&) {}
try {
filter.category(request.get_argument("category"));
} catch (const std::out_of_range&) {}
try {
filter.lang(request.get_argument("lang"));
} catch (const std::out_of_range&) {}
try {
filter.acceptTags(kiwix::split(request.get_argument("tag"), ";"));
} catch (...) {}
try {
filter.rejectTags(kiwix::split(request.get_argument("notag"), ";"));
} catch (...) {}
return filter;
}
template<class T>
std::vector<T> subrange(const std::vector<T>& v, size_t s, size_t n)
{
const size_t e = std::min(v.size(), s+n);
return std::vector<T>(v.begin()+std::min(v.size(), s), v.begin()+e);
}
} // unnamed namespace
std::vector<std::string>
InternalServer::search_catalog(const RequestContext& request,
kiwix::OPDSDumper& opdsDumper)
{
const auto filter = get_search_filter(request);
const std::string q = filter.hasQuery()
? filter.getQuery()
: "<Empty query>";
std::vector<std::string> bookIdsToDump = mp_library->filter(filter);
const auto totalResults = bookIdsToDump.size();
const size_t count = request.get_optional_param("count", 10UL);
const size_t startIndex = request.get_optional_param("start", 0UL);
const size_t intendedCount = count > 0 ? count : bookIdsToDump.size();
bookIdsToDump = subrange(bookIdsToDump, startIndex, intendedCount);
opdsDumper.setOpenSearchInfo(totalResults, startIndex, bookIdsToDump.size());
return bookIdsToDump;
}
namespace
{
std::string get_book_name(const RequestContext& request)
{
try {
return request.get_url_part(0);
} catch (const std::out_of_range& e) {
return std::string();
}
}
std::string searchSuggestionHTML(const std::string& searchURL, const std::string& pattern)
{
kainjow::mustache::mustache tmpl("Make a full text search for <a href=\"{{{searchURL}}}\">{{pattern}}</a>");
MustacheData data;
data.set("pattern", pattern);
data.set("searchURL", searchURL);
return (tmpl.render(data));
}
} // unnamed namespace
std::unique_ptr<Response>
InternalServer::build_redirect(const std::string& bookName, const zim::Item& item) const
{
auto redirectUrl = m_root + "/" + bookName + "/" + kiwix::urlEncode(item.getPath());
return Response::build_redirect(*this, redirectUrl);
}
std::unique_ptr<Response> InternalServer::handle_content(const RequestContext& request)
{
const std::string url = request.get_url();
const std::string pattern = url.substr((url.find_last_of('/'))+1);
if (m_verbose.load()) {
printf("** running handle_content\n");
}
const std::string bookName = get_book_name(request);
if (bookName.empty())
return build_homepage(request);
std::shared_ptr<zim::Archive> archive;
try {
const std::string bookId = mp_nameMapper->getIdForName(bookName);
archive = mp_library->getArchiveById(bookId);
} catch (const std::out_of_range& e) {}
if (archive == nullptr) {
const std::string searchURL = m_root + "/search?pattern=" + kiwix::urlEncode(pattern, true);
return HTTP404HtmlResponse(*this, request)
+ urlNotFoundMsg
+ searchSuggestionHTML(searchURL, kiwix::urlDecode(pattern))
+ TaskbarInfo(bookName);
}
auto urlStr = request.get_url().substr(bookName.size()+1);
if (urlStr[0] == '/') {
urlStr = urlStr.substr(1);
}
try {
auto entry = getEntryFromPath(*archive, urlStr);
if (entry.isRedirect() || urlStr.empty()) {
// If urlStr is empty, we want to mainPage.
// We must do a redirection to the real page.
return build_redirect(bookName, getFinalItem(*archive, entry));
}
auto response = ItemResponse::build(*this, request, entry.getItem());
try {
dynamic_cast<ContentResponse&>(*response).set_taskbar(bookName, archive.get());
} catch (std::bad_cast& e) {}
if (m_verbose.load()) {
printf("Found %s\n", entry.getPath().c_str());
printf("mimeType: %s\n", entry.getItem(true).getMimetype().c_str());
}
return response;
} catch(zim::EntryNotFound& e) {
if (m_verbose.load())
printf("Failed to find %s\n", urlStr.c_str());
std::string searchURL = m_root + "/search?content=" + bookName + "&pattern=" + kiwix::urlEncode(pattern, true);
return HTTP404HtmlResponse(*this, request)
+ urlNotFoundMsg
+ searchSuggestionHTML(searchURL, kiwix::urlDecode(pattern))
+ TaskbarInfo(bookName, archive.get());
}
}
std::unique_ptr<Response> InternalServer::handle_raw(const RequestContext& request)
{
if (m_verbose.load()) {
printf("** running handle_raw\n");
}
std::string bookName;
std::string kind;
try {
bookName = request.get_url_part(1);
kind = request.get_url_part(2);
} catch (const std::out_of_range& e) {
return HTTP404HtmlResponse(*this, request)
+ urlNotFoundMsg;
}
if (kind != "meta" && kind!= "content") {
const std::string error_details = kind + " is not a valid request for raw content.";
return HTTP404HtmlResponse(*this, request)
+ urlNotFoundMsg
+ error_details;
}
std::shared_ptr<zim::Archive> archive;
try {
const std::string bookId = mp_nameMapper->getIdForName(bookName);
archive = mp_library->getArchiveById(bookId);
} catch (const std::out_of_range& e) {}
if (archive == nullptr) {
return HTTP404HtmlResponse(*this, request)
+ urlNotFoundMsg
+ noSuchBookErrorMsg(bookName);
}
// Remove the beggining of the path:
// /raw/<bookName>/<kind>/foo
// ^^^^^ ^ ^
// 5 + 1 + 1 = 7
auto itemPath = request.get_url().substr(bookName.size()+kind.size()+7);
try {
if (kind == "meta") {
auto item = archive->getMetadataItem(itemPath);
return ItemResponse::build(*this, request, item, /*raw=*/true);
} else {
auto entry = archive->getEntryByPath(itemPath);
if (entry.isRedirect()) {
return build_redirect(bookName, entry.getItem(true));
}
return ItemResponse::build(*this, request, entry.getItem(), /*raw=*/true);
}
} catch (zim::EntryNotFound& e ) {
if (m_verbose.load()) {
printf("Failed to find %s\n", itemPath.c_str());
}
const std::string error_details = "Cannot find " + kind + " entry " + itemPath;
return HTTP404HtmlResponse(*this, request)
+ urlNotFoundMsg
+ error_details;
}
}
}
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