X-Git-Url: https://git.saurik.com/apt.git/blobdiff_plain/0977f81757f42889a9edb761061529041afe0a06..98cc7fd2c1d397623960baf69ae3cec04a87a23e:/apt-private/private-download.cc

diff --git a/apt-private/private-download.cc b/apt-private/private-download.cc
index 8cabf14b5..099146187 100644
--- a/apt-private/private-download.cc
+++ b/apt-private/private-download.cc
@@ -49,16 +49,23 @@ bool CheckDropPrivsMustBeDisabled(pkgAcquire &Fetcher)			/*{{{*/
    for (pkgAcquire::ItemIterator I = Fetcher.ItemsBegin();
 	I != Fetcher.ItemsEnd() && res == true; ++I)
    {
-      int fd = open((*I)->DestFile.c_str(), O_CREAT | O_RDWR, 0600);
+      if ((*I)->DestFile.empty())
+	 continue;
+      // we assume that an existing (partial) file means that we have sufficient rights
+      if (RealFileExists((*I)->DestFile))
+	 continue;
+      int fd = open((*I)->DestFile.c_str(), O_CREAT | O_EXCL | O_RDWR, 0600);
       if (fd < 0)
       {
 	 res = false;
 	 std::string msg;
 	 strprintf(msg, _("Can't drop privileges for downloading as file '%s' couldn't be accessed by user '%s'."),
 	       (*I)->DestFile.c_str(), SandboxUser.c_str());
-	 c0out << msg << std::endl;
+	 std::cerr << "W: " << msg << std::endl;
 	 _config->Set("APT::Sandbox::User", "");
+	 break;
       }
+      unlink((*I)->DestFile.c_str());
       close(fd);
    }
 
@@ -71,20 +78,23 @@ bool CheckDropPrivsMustBeDisabled(pkgAcquire &Fetcher)			/*{{{*/
 // CheckAuth - check if each download comes form a trusted source	/*{{{*/
 bool CheckAuth(pkgAcquire& Fetcher, bool const PromptUser)
 {
-   std::string UntrustedList;
+   std::vector<std::string> UntrustedList;
    for (pkgAcquire::ItemIterator I = Fetcher.ItemsBegin(); I < Fetcher.ItemsEnd(); ++I)
       if (!(*I)->IsTrusted())
-          UntrustedList += std::string((*I)->ShortDesc()) + " ";
+	 UntrustedList.push_back((*I)->ShortDesc());
 
-   if (UntrustedList == "")
+   if (UntrustedList.empty())
       return true;
 
    return AuthPrompt(UntrustedList, PromptUser);
 }
 
-bool AuthPrompt(std::string const &UntrustedList, bool const PromptUser)
+bool AuthPrompt(std::vector<std::string> const &UntrustedList, bool const PromptUser)
 {
-   ShowList(c2out,_("WARNING: The following packages cannot be authenticated!"),UntrustedList,"");
+   ShowList(c2out,_("WARNING: The following packages cannot be authenticated!"), UntrustedList,
+	 [](std::string const&) { return true; },
+	 [](std::string const&str) { return str; },
+	 [](std::string const&) { return ""; });
 
    if (_config->FindB("APT::Get::AllowUnauthenticated",false) == true)
    {