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#ifndef APT_APTMETHOD_H
#define APT_APTMETHOD_H
#include <apt-pkg/acquire-method.h>
#include <apt-pkg/configuration.h>
#include <apt-pkg/error.h>
#include <algorithm>
#include <locale>
#include <string>
#include <vector>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <apti18n.h>
static bool hasDoubleColon(std::string const &n)
{
return n.find("::") != std::string::npos;
}
class aptMethod : public pkgAcqMethod
{
protected:
std::string const Binary;
public:
virtual bool Configuration(std::string Message) APT_OVERRIDE
{
if (pkgAcqMethod::Configuration(Message) == false)
return false;
std::string const conf = std::string("Binary::") + Binary;
_config->MoveSubTree(conf.c_str(), NULL);
DropPrivsOrDie();
return true;
}
bool CalculateHashes(FetchItem const * const Itm, FetchResult &Res) const APT_NONNULL(2)
{
Hashes Hash(Itm->ExpectedHashes);
FileFd Fd;
if (Fd.Open(Res.Filename, FileFd::ReadOnly) == false || Hash.AddFD(Fd) == false)
return false;
Res.TakeHashes(Hash);
return true;
}
void Warning(const char *Format,...)
{
va_list args;
va_start(args,Format);
PrintStatus("104 Warning", Format, args);
va_end(args);
}
std::vector<std::string> methodNames;
void setPostfixForMethodNames(char const * const postfix) APT_NONNULL(2)
{
methodNames.erase(std::remove_if(methodNames.begin(), methodNames.end(), hasDoubleColon), methodNames.end());
decltype(methodNames) toAdd;
for (auto && name: methodNames)
toAdd.emplace_back(name + "::" + postfix);
std::move(toAdd.begin(), toAdd.end(), std::back_inserter(methodNames));
}
bool DebugEnabled() const
{
if (methodNames.empty())
return false;
auto const sni = std::find_if_not(methodNames.crbegin(), methodNames.crend(), hasDoubleColon);
if (unlikely(sni == methodNames.crend()))
return false;
auto const ln = methodNames[methodNames.size() - 1];
// worst case: all three are the same
std::string confln, confsn, confpn;
strprintf(confln, "Debug::Acquire::%s", ln.c_str());
strprintf(confsn, "Debug::Acquire::%s", sni->c_str());
auto const pni = sni->substr(0, sni->find('+'));
strprintf(confpn, "Debug::Acquire::%s", pni.c_str());
return _config->FindB(confln,_config->FindB(confsn, _config->FindB(confpn, false)));
}
std::string ConfigFind(char const * const postfix, std::string const &defValue) const APT_NONNULL(2)
{
for (auto name = methodNames.rbegin(); name != methodNames.rend(); ++name)
{
std::string conf;
strprintf(conf, "Acquire::%s::%s", name->c_str(), postfix);
auto const value = _config->Find(conf);
if (value.empty() == false)
return value;
}
return defValue;
}
std::string ConfigFind(std::string const &postfix, std::string const &defValue) const
{
return ConfigFind(postfix.c_str(), defValue);
}
bool ConfigFindB(char const * const postfix, bool const defValue) const APT_NONNULL(2)
{
return StringToBool(ConfigFind(postfix, defValue ? "yes" : "no"), defValue);
}
int ConfigFindI(char const * const postfix, int const defValue) const APT_NONNULL(2)
{
char *End;
std::string const value = ConfigFind(postfix, "");
auto const Res = strtol(value.c_str(), &End, 0);
if (value.c_str() == End)
return defValue;
return Res;
}
bool TransferModificationTimes(char const * const From, char const * const To, time_t &LastModified) APT_NONNULL(2, 3)
{
if (strcmp(To, "/dev/null") == 0)
return true;
struct stat Buf2;
if (lstat(To, &Buf2) != 0 || S_ISLNK(Buf2.st_mode))
return true;
struct stat Buf;
if (stat(From, &Buf) != 0)
return _error->Errno("stat",_("Failed to stat"));
// we don't use utimensat here for compatibility reasons: #738567
struct timeval times[2];
times[0].tv_sec = Buf.st_atime;
LastModified = times[1].tv_sec = Buf.st_mtime;
times[0].tv_usec = times[1].tv_usec = 0;
if (utimes(To, times) != 0)
return _error->Errno("utimes",_("Failed to set modification time"));
return true;
}
aptMethod(std::string &&Binary, char const * const Ver, unsigned long const Flags) APT_NONNULL(3) :
pkgAcqMethod(Ver, Flags), Binary(Binary), methodNames({Binary})
{
try {
std::locale::global(std::locale(""));
} catch (...) {
setlocale(LC_ALL, "");
}
}
};
#endif
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