626 lines
24 KiB
C++
626 lines
24 KiB
C++
#include "manager.h"
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#include "alpmdatabase.h"
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#include "utilities.h"
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#include "list.h"
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#include "config.h"
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#include "network/userrepository.h"
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#include <c++utilities/io/inifile.h>
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#include <c++utilities/conversion/stringconversion.h>
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#include <c++utilities/misc/memory.h>
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#include <QList>
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#include <QSysInfo>
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#include <QtConcurrent/QtConcurrent>
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#include <QMutexLocker>
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#include <fstream>
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#include <iostream>
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#include <unordered_map>
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#include <algorithm>
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using namespace std;
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using namespace IoUtilities;
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using namespace ConversionUtilities;
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namespace PackageManagement {
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/*!
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* \cond
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*/
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constexpr int defaultSigLevel = ALPM_SIG_PACKAGE | ALPM_SIG_PACKAGE_OPTIONAL |
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ALPM_SIG_DATABASE | ALPM_SIG_DATABASE_OPTIONAL;
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inline ostream &operator <<(ostream &stream, const QString &str)
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{
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stream << str.toLocal8Bit().data();
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return stream;
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}
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/*!
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* \endcond
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*/
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/*!
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* \brief The Manager class helps accessing ALPM.
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*
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* - It queries the ALPM for database and package information.
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* - It serializes the information as JSON objects used by the network classes and the web interface.
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*/
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/*!
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* \brief Creates a new manager class; initializes a new ALPM handle.
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* \param rootdir Specifies the root directory.
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* \param dbpath Specifies the database directory.
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*/
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Manager::Manager(const Config &config) :
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m_config(config),
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m_sigLevel(defaultSigLevel),
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m_localFileSigLevel(ALPM_SIG_USE_DEFAULT)
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{
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alpm_errno_t err;
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if(!(m_handle = alpm_initialize(config.alpmRootDir().toLocal8Bit().data(), config.alpmDbPath().toLocal8Bit().data(), &err))) {
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throw runtime_error(string("Cannot initialize ALPM: ") + alpm_strerror(err));
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}
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m_localDb = make_unique<AlpmDataBase>(alpm_get_localdb(m_handle), config.alpmDbPath());
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if(config.isAurEnabled()) {
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m_userRepo = make_unique<UserRepository>(m_networkAccessManager);
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}
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}
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/*!
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* \brief Releases the associated ALPM handle.
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*/
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Manager::~Manager()
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{
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alpm_release(m_handle);
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}
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/*!
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* \brief Returns the package with the specified name from the specified database.
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*/
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AlpmPackage *Manager::packageFromDataBase(const QString &dbName, const QString &pkgName)
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{
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if(auto *db = dataBaseByName(dbName)) {
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return static_cast<AlpmPackage *>(db->packageByName(pkgName));
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} else {
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return nullptr;
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}
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}
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/*!
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* \brief Returns the package with the specified name from the specified database.
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*/
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const AlpmPackage *Manager::packageFromDataBase(const QString &dbName, const QString &pkgName) const
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{
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if(const auto *db = dataBaseByName(dbName)) {
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return static_cast<const AlpmPackage *>(db->packageByName(pkgName));
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} else {
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return nullptr;
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}
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}
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/*!
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* \brief Gets the package with the specified \a name from one of the sync databases.
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*/
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AlpmPackage *Manager::packageFromSyncDataBases(const QString &pkgName)
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{
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for(const auto &dbEntry : syncDataBases()) {
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if(auto *pkg = dbEntry.second->packageByName(pkgName)) {
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return static_cast<AlpmPackage *>(pkg);
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}
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}
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return nullptr;
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}
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/*!
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* \brief Gets the package with the specified \a name from one of the sync databases.
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*/
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const AlpmPackage *Manager::packageFromSyncDataBases(const QString &pkgName) const
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{
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for(const auto &dbEntry : syncDataBases()) {
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if(const auto *pkg = dbEntry.second->packageByName(pkgName)) {
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return static_cast<const AlpmPackage *>(pkg);
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}
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}
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return nullptr;
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}
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/*!
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* \brief Creates a new package instance for the specified package file.
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*
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* Verifies the integrity of the file if the option is set.
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*/
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unique_ptr<AlpmOwnershipPackage> Manager::packageFromFile(const char *fileName, bool verifyIntegrity)
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{
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alpm_pkg_t *pkg;
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if(alpm_pkg_load(m_handle, fileName, verifyIntegrity, static_cast<alpm_siglevel_t>(m_localFileSigLevel), &pkg) != 0) {
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throw runtime_error(string("Unable to load package file: ") + alpm_strerror(alpm_errno(m_handle)));
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} else {
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return make_unique<AlpmOwnershipPackage>(pkg);
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}
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}
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/*!
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* \brief Sets the install reason for the specified \a package.
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*/
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void Manager::setInstallReason(AlpmPackage *package, alpm_pkgreason_t reason)
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{
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if(alpm_pkg_set_reason(package->ptr(), reason)) {
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throw runtime_error(string("Unable to set install reason of the package ") + package->name().toLocal8Bit().data() + ": " + alpm_strerror(alpm_errno(m_handle)));
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}
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}
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/*!
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* \brief Returns the last value with the specified \a key in the specified multimap.
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*/
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const string &lastValue(const multimap<string, string> &mm, const string &key)
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{
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static const string defaultValue;
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const auto i = find_if(mm.crbegin(), mm.crend(), [&key] (const pair<string, string> &i) {
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return i.first == key;
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});
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return i != mm.crend() ? i->second : defaultValue;
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}
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/*!
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* \brief Parses a "SigLevel" denotation from pacman config file.
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*/
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int Manager::parseSigLevel(const string &sigLevelStr)
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{
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int sigLevel = defaultSigLevel;
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// split sig level denotation into parts
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const auto parts = splitString<list<string> >(sigLevelStr, " ");
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for(const auto &part : parts) {
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// determine whether part affect packages, databases or both
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bool package = true, db = true;
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const char *partStart = part.data();
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if(!strncmp(partStart, "Package", 7)) {
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db = false; // package only part
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partStart += 7;
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} else if(!strncmp(partStart, "Database", 8)) {
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package = false; // db only part
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partStart += 8;
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}
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// set sig level according part
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if(!strcmp(partStart, "Never")) {
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if(package) {
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sigLevel &= ~ALPM_SIG_PACKAGE;
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}
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if(db) {
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sigLevel &= ~ALPM_SIG_DATABASE;
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}
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} else if(!strcmp(partStart, "Optional")) {
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if(package) {
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sigLevel |= ALPM_SIG_PACKAGE | ALPM_SIG_PACKAGE_OPTIONAL;
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}
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if(db) {
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sigLevel |= ALPM_SIG_DATABASE | ALPM_SIG_DATABASE_OPTIONAL;
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}
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} else if(!strcmp(partStart, "Required")) {
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if(package) {
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sigLevel |= ALPM_SIG_PACKAGE;
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sigLevel &= ~ALPM_SIG_PACKAGE_OPTIONAL;
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}
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if(db) {
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sigLevel |= ALPM_SIG_DATABASE;
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sigLevel &= ~ALPM_SIG_DATABASE_OPTIONAL;
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}
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} else if(!strcmp(partStart, "TrustedOnly")) {
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if(package) {
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sigLevel &= ~(ALPM_SIG_PACKAGE_MARGINAL_OK | ALPM_SIG_PACKAGE_UNKNOWN_OK);
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}
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if(db) {
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sigLevel &= ~(ALPM_SIG_DATABASE_MARGINAL_OK | ALPM_SIG_DATABASE_UNKNOWN_OK);
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}
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} else if(!strcmp(partStart, "TrustAll")) {
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if(package) {
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sigLevel |= ALPM_SIG_PACKAGE_MARGINAL_OK | ALPM_SIG_PACKAGE_UNKNOWN_OK;
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}
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if(db) {
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sigLevel |= ALPM_SIG_DATABASE_MARGINAL_OK | ALPM_SIG_DATABASE_UNKNOWN_OK;
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}
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} else {
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cerr << "Warning: Invalid value \"" << part << "\" for \"SigLevel\" in pacman config file will be ignored." << endl;
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}
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}
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return sigLevel;
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}
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/*!
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* \brief Parses a "Usage" denotation from pacman config file.
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*/
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int Manager::parseUsage(const string &usageStr)
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{
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int usage = 0;
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const auto parts = splitString<list<string> >(usageStr, " ");
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for(const auto &part : parts) {
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if(part == "Sync") {
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usage |= ALPM_DB_USAGE_SYNC;
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} else if(part == "Search") {
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usage |= ALPM_DB_USAGE_SEARCH;
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} else if(part == "Install") {
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usage |= ALPM_DB_USAGE_INSTALL;
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} else if(part == "Upgrade") {
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usage |= ALPM_DB_USAGE_UPGRADE;
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} else {
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cerr << "Warning: Invalid value \"" << part << "\" for \"Usage\" in pacman config file will be ignored." << endl;
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}
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}
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return usage ? usage : ALPM_DB_USAGE_ALL;
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}
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/*!
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* \brief Parses and applies the Pacman configuration. Registers the listed sync databases.
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*/
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void Manager::applyPacmanConfig()
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{
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// open config file and parse as ini
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try {
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IniFile configIni;
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{
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fstream configFile;
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configFile.exceptions(ios_base::failbit | ios_base::badbit);
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configFile.open(m_config.pacmanConfFile().toLocal8Bit().data(), ios_base::in);
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configIni.parse(configFile);
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}
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// determine current cpu archtitecture (required for server URLs)
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static const string sysArch(QSysInfo::currentCpuArchitecture().toStdString());
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string arch = sysArch;
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const auto &config = configIni.data();
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// read relevant options
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static const string sigLevelKey("SigLevel");
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static const string usageKey("Usage");
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int globalSigLevel;
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try {
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const auto &options = config.at("options");
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const auto &specifiedArch = lastValue(options, "Architecture");
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if(!specifiedArch.empty() && specifiedArch != "auto") {
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arch = specifiedArch;
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}
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const auto &specifiedDir = lastValue(options, "CacheDir");
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if(!specifiedDir.empty()) {
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m_pacmanCacheDir = QString::fromStdString(specifiedDir);
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}
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globalSigLevel = parseSigLevel(lastValue(options, sigLevelKey));
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} catch(const out_of_range &) {
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// no options specified
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globalSigLevel = defaultSigLevel;
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}
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// register sync databases
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unordered_map<string, IniFile> includedInis;
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for(const auto &scope : config) {
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if(scope.first != "options") {
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// read and validate database name
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QString dbName = QString::fromLocal8Bit(scope.first.c_str());
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if(dbName.compare(QLatin1String("local"), Qt::CaseInsensitive) == 0) {
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cerr << "Error: Unable to add database from pacman config: The database name mustn't be \"local\" because this name is reserved for the local database." << endl;
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} else if(dbName.startsWith(QLatin1String("aur"), Qt::CaseInsensitive)) {
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cerr << "Error: Unable to add database from pacman config: The database name mustn't start with \"aur\" because this name is reserved for the Arch Linux User Repository." << endl;
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} else if(m_syncDbs.count(dbName)) {
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cerr << "Error: Unable to add database from pacman config: Database names must be unique. Ignoring second occurance of database \"" << scope.first << "\"." << endl;
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} else {
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// read sig level and usage
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const auto &sigLevelStr = lastValue(scope.second, sigLevelKey);
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int sigLevel = sigLevelStr.empty() ? globalSigLevel : parseSigLevel(sigLevelStr);
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int usage = parseUsage(lastValue(scope.second, usageKey));
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// try to register database in the ALPM system
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if(alpm_db_t *db = alpm_register_syncdb(m_handle, scope.first.c_str(), static_cast<alpm_siglevel_t>(sigLevel))) {
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// set usage
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if(alpm_db_set_usage(db, static_cast<alpm_db_usage_t>(usage)) == 0) {
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if(m_config.isVerbose() || m_config.runServer()) {
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cerr << "Added database [" << scope.first << "]" << endl;
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}
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} else {
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if(m_config.isVerbose() || m_config.runServer()) {
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cerr << "Warning: Added database [" << scope.first << "] but failed to set usage" << endl;
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}
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}
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// add servers
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for(auto range = scope.second.equal_range("Server"); range.first != range.second; ++range.first) {
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string url = range.first->second;
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findAndReplace<string>(url, "$repo", scope.first);
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findAndReplace<string>(url, "$arch", arch);
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alpm_db_add_server(db, url.c_str());
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if(m_config.isVerbose() || m_config.runServer()) {
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cerr << "Added server: " << url << endl;
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}
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}
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// add included servers
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for(auto range = scope.second.equal_range("Include"); range.first != range.second; ++range.first) {
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const auto &path = range.first->second;
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auto &includedIni = includedInis[path];
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if(includedIni.data().empty()) {
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try {
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fstream includedFile;
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includedFile.exceptions(ios_base::failbit | ios_base::badbit);
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includedFile.open(path, ios_base::in);
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includedIni.parse(includedFile);
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} catch (const ios_base::failure &) {
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cerr << "Error: An IO exception occured when parsing the included file \"" << path << "\"." << endl;
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}
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}
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try {
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const auto &includedScope = includedIni.data().at(string());
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for(auto range = includedScope.equal_range("Server"); range.first != range.second; ++range.first) {
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string url = range.first->second;
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findAndReplace<string>(url, "$repo", scope.first);
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findAndReplace<string>(url, "$arch", arch);
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alpm_db_add_server(db, url.c_str());
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if(m_config.isVerbose() || m_config.runServer()) {
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cerr << "Added server: " << url << endl;
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}
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}
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} catch (const out_of_range &) {
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cerr << "Warning: Included file \"" << path << "\" has no values." << endl;
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}
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}
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auto emplaced = m_syncDbs.emplace(dbName, make_unique<AlpmDataBase>(db, m_config.alpmDbPath()));
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// add sync db to internal map
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if(usage & ALPM_DB_USAGE_UPGRADE) {
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// -> db is used to upgrade local database
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localDataBase()->upgradeSources() << emplaced.first->second.get();
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}
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} else {
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cerr << "Error: Unable to add sync database [" << scope.first << "]" << endl;
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}
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}
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}
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}
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} catch (const ios_base::failure &) {
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throw ios_base::failure("Error: An IO exception occured when parsing the config file.");
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}
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}
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/*!
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* \brief Applies the repository index configuration.
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*/
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void Manager::applyRepoIndexConfig()
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{
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// check whether an entry already exists, if not create a new one
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for(const RepoEntry &repoEntry : m_config.repoEntries()) {
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AlpmDataBase *syncDb = nullptr;
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try {
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syncDb = m_syncDbs.at(repoEntry.name()).get();
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cerr << "Applying config for database [" << syncDb->name() << "]" << endl;
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if(!repoEntry.dataBasePath().isEmpty()) {
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cerr << "Warning: Can't use data base path specified in repo index config because the repo \""
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<< repoEntry.name() << "\" has already been added from the Pacman config." << endl;
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}
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if(repoEntry.sigLevel()) {
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cerr << "Warning: Can't use sig level specified in repo index config because the repo \""
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<< repoEntry.name() << "\" has already been added from the Pacman config." << endl;
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}
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syncDb->setPackagesDirectory(repoEntry.packageDir());
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syncDb->setSourcesDirectory(repoEntry.sourceDir());
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} catch(const out_of_range &) {
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if(repoEntry.name().compare(QLatin1String("local"), Qt::CaseInsensitive) == 0) {
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cerr << "Error: Unable to add database from repo index config: The database name mustn't be \"local\" because this name is reserved for the local database." << endl;
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} else if(repoEntry.name().startsWith(QLatin1String("aur"), Qt::CaseInsensitive)) {
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cerr << "Error: Unable to add database from repo index config: The database name mustn't start with \"aur\" because this name is reserved for the Arch Linux User Repository." << endl;
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} else {
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// TODO: database path
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auto *db = alpm_register_syncdb(m_handle, repoEntry.name().toLocal8Bit().data(), static_cast<alpm_siglevel_t>(repoEntry.sigLevel()));
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auto emplaced = m_syncDbs.emplace(repoEntry.name(), make_unique<AlpmDataBase>(db, m_config.alpmDbPath()));
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if(emplaced.second) {
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syncDb = emplaced.first->second.get();
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syncDb->setSourcesDirectory(repoEntry.sourceDir());
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syncDb->setPackagesDirectory(repoEntry.packageDir());
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if(m_config.isVerbose() || m_config.runServer()) {
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cerr << "Added database [" << repoEntry.name() << "]" << endl;
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}
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}
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}
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}
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if(syncDb) {
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syncDb->addServerUrls(repoEntry.servers());
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}
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}
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// add upgrade sources
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for(const RepoEntry &repoEntry : m_config.repoEntries()) {
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try {
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auto &upgradeSources = m_syncDbs.at(repoEntry.name())->upgradeSources();
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for(const auto &upgradeSourceName : repoEntry.upgradeSources()) {
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if(auto *source = repositoryByName(upgradeSourceName)) {
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upgradeSources << source;
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} else {
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cerr << "Warning: The specified upgrade source \"" << upgradeSourceName << "\" can not be found and will be ignored." << endl;
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}
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}
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} catch(const out_of_range &) {
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// entry should have been added before
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}
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}
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}
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/*!
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* \brief Unregisters all registred sync databases.
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*/
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void Manager::unregisterSyncDataBases()
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{
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if(alpm_unregister_all_syncdbs(m_handle)) {
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throw runtime_error(string("Cannot unregister sync databases: ") + alpm_strerror(alpm_errno(m_handle)));
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}
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}
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/*!
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* \brief Returns a list of all sync databases.
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* \remarks Sync databases must be registered with parsePacmanConfig() before.
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*/
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const map<QString, unique_ptr<AlpmDataBase> > &Manager::syncDataBases() const
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{
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return m_syncDbs; // m_syncDbs has been filled when the databases were registered
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}
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/*!
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* \brief Returns basic information about all repositories known to the manager.
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*
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* The results include the local database ("local") and the names of
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* the registered sync databases.
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*/
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const QJsonArray &Manager::basicRepoInfo() const
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{
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if(m_basicRepoInfo.isEmpty()) {
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QMutexLocker locker(&m_basicRepoInfoMutex);
|
|
if(m_basicRepoInfo.isEmpty()) {
|
|
// add local data base
|
|
m_basicRepoInfo << localDataBase()->basicInfo();
|
|
// add sync data bases
|
|
for(const auto &syncDb : syncDataBases()) {
|
|
// check if the "sync" database is actually used for syncing
|
|
auto usage = syncDb.second->usage();
|
|
if((usage & ALPM_DB_USAGE_SYNC) || (usage & ALPM_DB_USAGE_INSTALL) || (usage & ALPM_DB_USAGE_UPGRADE)) {
|
|
m_basicRepoInfo << syncDb.second->basicInfo();
|
|
} else {
|
|
m_basicRepoInfo << syncDb.second->basicInfo();
|
|
}
|
|
}
|
|
// add AUR
|
|
if(config().isAurEnabled()) {
|
|
m_basicRepoInfo << userRepository()->basicInfo();
|
|
}
|
|
}
|
|
}
|
|
return m_basicRepoInfo;
|
|
}
|
|
|
|
/*!
|
|
* \brief Returns package information for the specified selection of packages.
|
|
*/
|
|
const QJsonArray Manager::packageInfo(const QJsonObject &pkgSelection, bool full) const
|
|
{
|
|
QJsonArray pkgInfos;
|
|
for(auto i = pkgSelection.constBegin(), end = pkgSelection.constEnd(); i != end; ++i) {
|
|
if(auto *repo = repositoryByName(i.key())) {
|
|
for(const auto &entry : i.value().toArray()) {
|
|
const auto entryObj = entry.toObject();
|
|
const auto pkgName = entryObj.value(QStringLiteral("name")).toString();
|
|
if(!pkgName.isEmpty()) {
|
|
QJsonObject pkgInfo;
|
|
if(auto *pkg = repo->packageByName(pkgName)) {
|
|
pkgInfo = full ? pkg->fullInfo() : pkg->basicInfo();
|
|
} else {
|
|
pkgInfo.insert(QStringLiteral("error"), QStringLiteral("na"));
|
|
}
|
|
pkgInfo.insert(QStringLiteral("name"), pkgName);
|
|
pkgInfo.insert(QStringLiteral("repo"), repo->name());
|
|
const auto index = entryObj.value(QStringLiteral("index"));
|
|
if(!index.isNull() && !index.isUndefined()) {
|
|
pkgInfo.insert(QStringLiteral("index"), index);
|
|
}
|
|
pkgInfos << pkgInfo;
|
|
}
|
|
}
|
|
} else {
|
|
// specified repository can not be found
|
|
QJsonObject errorObj;
|
|
errorObj.insert(QStringLiteral("repo"), i.key());
|
|
errorObj.insert(QStringLiteral("error"), QStringLiteral("na"));
|
|
pkgInfos << errorObj;
|
|
}
|
|
|
|
}
|
|
return pkgInfos;
|
|
}
|
|
|
|
/*!
|
|
* \brief Returns group information for the local database and all registred sync databases.
|
|
*/
|
|
const QJsonArray &Manager::groupInfo() const
|
|
{
|
|
if(m_groupInfo.empty()) {
|
|
QMutexLocker locker(&m_groupInfoMutex);
|
|
if(m_groupInfo.empty()) {
|
|
m_groupInfo << localDataBase()->groupInfo();
|
|
for(const auto &db : m_syncDbs) {
|
|
m_groupInfo << db.second->groupInfo();
|
|
}
|
|
}
|
|
}
|
|
return m_groupInfo;
|
|
}
|
|
|
|
/*!
|
|
* \brief Returns the ALPM database with the specified name.
|
|
*/
|
|
const AlpmDataBase *Manager::dataBaseByName(const QString &dbName) const
|
|
{
|
|
if(dbName.compare(QLatin1String("local"), Qt::CaseInsensitive) == 0) {
|
|
return localDataBase();
|
|
} else {
|
|
try {
|
|
return m_syncDbs.at(dbName).get();
|
|
} catch(const out_of_range &) {
|
|
return nullptr;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*!
|
|
* \brief Returns the ALPM database with the specified name.
|
|
*/
|
|
AlpmDataBase *Manager::dataBaseByName(const QString &dbName)
|
|
{
|
|
if(dbName.compare(QLatin1String("local"), Qt::CaseInsensitive) == 0) {
|
|
return localDataBase();
|
|
} else {
|
|
try {
|
|
return m_syncDbs.at(dbName).get();
|
|
} catch(const out_of_range &) {
|
|
return nullptr;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*!
|
|
* \brief Returns the package source with the specified name.
|
|
*/
|
|
const Repository *Manager::repositoryByName(const QString &name) const
|
|
{
|
|
if(name.compare(QLatin1String("local"), Qt::CaseInsensitive) == 0) {
|
|
return localDataBase();
|
|
} else if(config().isAurEnabled() && (name.compare(QLatin1String("aur"), Qt::CaseInsensitive) == 0)) {
|
|
return userRepository();
|
|
} else {
|
|
try {
|
|
return m_syncDbs.at(name).get();
|
|
} catch(const out_of_range &) {
|
|
return nullptr;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*!
|
|
* \brief Returns the package source with the specified name.
|
|
*/
|
|
Repository *Manager::repositoryByName(const QString &name)
|
|
{
|
|
if(name.compare(QLatin1String("local"), Qt::CaseInsensitive) == 0) {
|
|
return localDataBase();
|
|
} else if(config().isAurEnabled() && (name.compare(QLatin1String("aur"), Qt::CaseInsensitive) == 0)) {
|
|
return userRepository();
|
|
} else {
|
|
try {
|
|
return m_syncDbs.at(name).get();
|
|
} catch(const out_of_range &) {
|
|
return nullptr;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*!
|
|
* \brief Checks the specified database for upgrades.
|
|
*
|
|
* Appropriate upgrade sources will be determined automatically; does not check the AUR.
|
|
*/
|
|
const UpgradeLookupResults Manager::checkForUpgrades(AlpmDataBase *db) const
|
|
{
|
|
UpgradeLookupResults results;
|
|
db->checkForUpgrades(results);
|
|
return results;
|
|
}
|
|
|
|
}
|