mirror of https://github.com/aria2/aria2
96 lines
2.8 KiB
C++
96 lines
2.8 KiB
C++
/* <!-- copyright */
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/*
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* aria2 - a simple utility for downloading files faster
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*
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* Copyright (C) 2006 Tatsuhiro Tsujikawa
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/* copyright --> */
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#include "ShaVisitor.h"
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#include "Util.h"
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ShaVisitor::ShaVisitor() {
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#ifdef ENABLE_SHA1DIGEST
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sha1DigestInit(ctx);
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sha1DigestReset(ctx);
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#endif // ENABLE_SHA1DIGEST
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}
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ShaVisitor::~ShaVisitor() {
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#ifdef ENABLE_SHA1DIGEST
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sha1DigestFree(ctx);
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#endif // ENABLE_SHA1DIGEST
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}
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void ShaVisitor::visit(const Data* d) {
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#ifdef ENABLE_SHA1DIGEST
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if(d->isNumber()) {
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sha1DigestUpdate(ctx, "i", 1);
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} else {
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string lenStr = Util::llitos(d->getLen());
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sha1DigestUpdate(ctx, lenStr.c_str(), lenStr.size());
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sha1DigestUpdate(ctx, ":", 1);
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}
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sha1DigestUpdate(ctx, d->getData(), d->getLen());
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if(d->isNumber()) {
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sha1DigestUpdate(ctx, "e", 1);
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}
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#endif // ENABLE_SHA1DIGEST
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}
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void ShaVisitor::visit(const Dictionary* d) {
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#ifdef ENABLE_SHA1DIGEST
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sha1DigestUpdate(ctx, "d", 1);
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const Order& v = d->getOrder();
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for(Order::const_iterator itr = v.begin(); itr != v.end(); itr++) {
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string lenStr = Util::llitos(itr->size());
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sha1DigestUpdate(ctx, lenStr.c_str(), lenStr.size());
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sha1DigestUpdate(ctx, ":", 1);
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sha1DigestUpdate(ctx, itr->c_str(), itr->size());
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const MetaEntry* e = d->get(*itr);
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this->visit(e);
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}
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sha1DigestUpdate(ctx, "e", 1);
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#endif // ENABLE_SHA1DIGEST
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}
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void ShaVisitor::visit(const List* l) {
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#ifdef ENABLE_SHA1DIGEST
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sha1DigestUpdate(ctx, "l", 1);
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for(MetaList::const_iterator itr = l->getList().begin(); itr != l->getList().end(); itr++) {
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this->visit(*itr);
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}
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sha1DigestUpdate(ctx, "e", 1);
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#endif // ENABLE_SHA1DIGEST
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}
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void ShaVisitor::visit(const MetaEntry* e) {
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if(dynamic_cast<const Data*>(e) != NULL) {
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visit((const Data*)e);
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} else if(dynamic_cast<const Dictionary*>(e) != NULL) {
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visit((const Dictionary*)e);
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} else if(dynamic_cast<const List*>(e) != NULL) {
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visit((const List*)e);
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}
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}
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void ShaVisitor::getHash(unsigned char* hashValue, int& len) {
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#ifdef ENABLE_SHA1DIGEST
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sha1DigestFinal(ctx, hashValue);
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len = 20;
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#endif // ENABLE_SHA1DIGEST
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}
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