1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184
|
/* <!-- copyright */
/*
* aria2 - The high speed download utility
*
* Copyright (C) 2009 Tatsuhiro Tsujikawa
*
* 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 2 of the License, or
* (at your option) 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
*
* In addition, as a special exception, the copyright holders give
* permission to link the code of portions of this program with the
* OpenSSL library under certain conditions as described in each
* individual source file, and distribute linked combinations
* including the two.
* You must obey the GNU General Public License in all respects
* for all of the code used other than OpenSSL. If you modify
* file(s) with this exception, you may extend this exception to your
* version of the file(s), but you are not obligated to do so. If you
* do not wish to do so, delete this exception statement from your
* version. If you delete this exception statement from all source
* files in the program, then also delete it here.
*/
/* copyright --> */
#include "RpcMethod.h"
#include "DownloadEngine.h"
#include "LogFactory.h"
#include "RecoverableException.h"
#include "message.h"
#include "OptionParser.h"
#include "OptionHandler.h"
#include "Option.h"
#include "array_fun.h"
#include "download_helper.h"
#include "RpcRequest.h"
#include "RpcResponse.h"
#include "prefs.h"
#include "fmt.h"
#include "DlAbortEx.h"
#include "a2functional.h"
#include "util.h"
namespace aria2 {
namespace rpc {
RpcMethod::RpcMethod()
: optionParser_(OptionParser::getInstance())
{}
RpcMethod::~RpcMethod() {}
std::unique_ptr<ValueBase> RpcMethod::createErrorResponse
(const Exception& e, const RpcRequest& req)
{
auto params = Dict::g();
params->put((req.jsonRpc ? "code" : "faultCode"), Integer::g(1));
params->put((req.jsonRpc ? "message" : "faultString"), std::string(e.what()));
return std::move(params);
}
void RpcMethod::authorize(RpcRequest& req, DownloadEngine* e)
{
std::string token;
// We always treat first parameter as token if it is string and
// starts with "token:" and remove it from parameter list, so that
// we don't have to add conditionals to all RPCMethod
// implementations.
if(req.params && !req.params->empty()) {
auto t = downcast<String>(req.params->get(0));
if(t) {
if(util::startsWith(t->s(), "token:")) {
token = t->s().substr(6);
req.params->pop_front();
}
}
}
if (!e || !e->validateToken(token)) {
throw DL_ABORT_EX("Unauthorized");
}
}
RpcResponse RpcMethod::execute(RpcRequest req, DownloadEngine* e)
{
auto authorized = RpcResponse::NOTAUTHORIZED;
try {
authorize(req, e);
authorized = RpcResponse::AUTHORIZED;
auto r = process(req, e);
return RpcResponse(0, authorized, std::move(r), std::move(req.id));
} catch(RecoverableException& ex) {
A2_LOG_DEBUG_EX(EX_EXCEPTION_CAUGHT, ex);
return RpcResponse(1, authorized, createErrorResponse(ex, req),
std::move(req.id));
}
}
namespace {
template<typename InputIterator, typename Pred>
void gatherOption
(InputIterator first, InputIterator last,
Pred pred,
Option* option,
const std::shared_ptr<OptionParser>& optionParser)
{
for(; first != last; ++first) {
const std::string& optionName = (*first).first;
PrefPtr pref = option::k2p(optionName);
const OptionHandler* handler = optionParser->find(pref);
if(!handler || !pred(handler)) {
// Just ignore the unacceptable options in this context.
continue;
}
const String* opval = downcast<String>((*first).second);
if(opval) {
handler->parse(*option, opval->s());
} else if(handler->getCumulative()) {
// header and index-out option can take array as value
const List* oplist = downcast<List>((*first).second);
if(oplist) {
for(auto & elem : *oplist) {
const String* opval = downcast<String>(elem);
if(opval) {
handler->parse(*option, opval->s());
}
}
}
}
}
}
} // namespace
void RpcMethod::gatherRequestOption(Option* option, const Dict* optionsDict)
{
if(optionsDict) {
gatherOption(optionsDict->begin(), optionsDict->end(),
std::mem_fn(&OptionHandler::getInitialOption),
option, optionParser_);
}
}
void RpcMethod::gatherChangeableOption(Option* option, const Dict* optionsDict)
{
if(optionsDict) {
gatherOption(optionsDict->begin(), optionsDict->end(),
std::mem_fn(&OptionHandler::getChangeOption),
option, optionParser_);
}
}
void RpcMethod::gatherChangeableOptionForReserved
(Option* option,
const Dict* optionsDict)
{
if(optionsDict) {
gatherOption(optionsDict->begin(), optionsDict->end(),
std::mem_fn(&OptionHandler::getChangeOptionForReserved),
option, optionParser_);
}
}
void RpcMethod::gatherChangeableGlobalOption
(Option* option, const Dict* optionsDict)
{
if(optionsDict) {
gatherOption(optionsDict->begin(), optionsDict->end(),
std::mem_fn(&OptionHandler::getChangeGlobalOption),
option, optionParser_);
}
}
} // namespace rpc
} // namespace aria2
|