CMake: Do not use -lresolv if res_init exists in libc

[apt.git] / methods / aptmethod.h

diff --git a/methods/aptmethod.h b/methods/aptmethod.h
index 7f7f31dba02efdef1464e00cf33d6314492a5c01..04c4fa99b270c47d41efb5b19a4f86cea323a729 100644 (file)
--- a/methods/aptmethod.h
+++ b/methods/aptmethod.h
@@ -3,12 +3,29 @@
 
 #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
 {
-   char const * const Binary;
+protected:
+   std::string const Binary;
 
 public:
    virtual bool Configuration(std::string Message) APT_OVERRIDE
@@ -24,7 +41,7 @@ public:
       return true;
    }
 
-   bool CalculateHashes(FetchItem const * const Itm, FetchResult &Res) const
+   bool CalculateHashes(FetchItem const * const Itm, FetchResult &Res) const APT_NONNULL(2)
    {
       Hashes Hash(Itm->ExpectedHashes);
       FileFd Fd;
@@ -34,9 +51,101 @@ public:
       return true;
    }
 
-   aptMethod(char const * const Binary, char const * const Ver, unsigned long const Flags) :
-      pkgAcqMethod(Ver, Flags), Binary(Binary)
-   {}
+   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