diff options
| author | Julian Andres Klode <jak@debian.org> | 2016-10-02 17:20:33 +0200 |
|---|---|---|
| committer | Julian Andres Klode <jak@debian.org> | 2016-10-05 21:53:39 +0200 |
| commit | 78046276db89bed39cde785760cd5d0c694ddb1d (patch) | |
| tree | fc7a0bd20add5e185859d7db1ad82492f87b74a1 /apt-pkg | |
| parent | f54a4774ea901f861de96b13a4d952b8ea6c2976 (diff) | |
Do not read stderr from proxy autodetection scripts
This fixes a regression introduced in
commit 8f858d560e3b7b475c623c4e242d1edce246025a
don't leak FD in AutoProxyDetect command return parsing
which accidentally made the proxy autodetection code also read
the scripts output on stderr, not only on stdout when it switched
the code from popen() to Popen().
Reported-By: Tim Small <tim@seoss.co.uk>
(cherry picked from commit 0ecceb5bb9cc8727c117195945b7116aceb984fe)
Diffstat (limited to 'apt-pkg')
| -rw-r--r-- | apt-pkg/contrib/fileutl.cc | 8 | ||||
| -rw-r--r-- | apt-pkg/contrib/fileutl.h | 3 | ||||
| -rw-r--r-- | apt-pkg/contrib/proxy.cc | 2 |
3 files changed, 11 insertions, 2 deletions
diff --git a/apt-pkg/contrib/fileutl.cc b/apt-pkg/contrib/fileutl.cc index 20ccaa1c6..df39ae160 100644 --- a/apt-pkg/contrib/fileutl.cc +++ b/apt-pkg/contrib/fileutl.cc @@ -2804,6 +2804,11 @@ bool Rename(std::string From, std::string To) /*{{{*/ /*}}}*/ bool Popen(const char* Args[], FileFd &Fd, pid_t &Child, FileFd::OpenMode Mode)/*{{{*/ { + return Popen(Args, Fd, Child, Mode, true); +} + /*}}}*/ +bool Popen(const char* Args[], FileFd &Fd, pid_t &Child, FileFd::OpenMode Mode, bool CaptureStderr)/*{{{*/ +{ int fd; if (Mode != FileFd::ReadOnly && Mode != FileFd::WriteOnly) return _error->Error("Popen supports ReadOnly (x)or WriteOnly mode only"); @@ -2834,7 +2839,8 @@ bool Popen(const char* Args[], FileFd &Fd, pid_t &Child, FileFd::OpenMode Mode)/ if(Mode == FileFd::ReadOnly) { dup2(fd, 1); - dup2(fd, 2); + if (CaptureStderr == true) + dup2(fd, 2); } else if(Mode == FileFd::WriteOnly) dup2(fd, 0); diff --git a/apt-pkg/contrib/fileutl.h b/apt-pkg/contrib/fileutl.h index 9333b8d5f..7ee302d7b 100644 --- a/apt-pkg/contrib/fileutl.h +++ b/apt-pkg/contrib/fileutl.h @@ -245,8 +245,11 @@ std::vector<std::string> Glob(std::string const &pattern, int flags=0); * \param Child a reference to the integer that stores the child pid * Note that you must call ExecWait() or similar to cleanup * \param Mode is either FileFd::ReadOnly or FileFd::WriteOnly + * \param CaptureStderr True if we should capture stderr in addition to stdout. + * (default: True). * \return true on success, false on failure with _error set */ +bool Popen(const char* Args[], FileFd &Fd, pid_t &Child, FileFd::OpenMode Mode, bool CaptureStderr); bool Popen(const char* Args[], FileFd &Fd, pid_t &Child, FileFd::OpenMode Mode); diff --git a/apt-pkg/contrib/proxy.cc b/apt-pkg/contrib/proxy.cc index 84d802dcb..13a6ab940 100644 --- a/apt-pkg/contrib/proxy.cc +++ b/apt-pkg/contrib/proxy.cc @@ -48,7 +48,7 @@ bool AutoDetectProxy(URI &URL) Args.push_back(nullptr); FileFd PipeFd; pid_t Child; - if(Popen(&Args[0], PipeFd, Child, FileFd::ReadOnly) == false) + if(Popen(&Args[0], PipeFd, Child, FileFd::ReadOnly, false) == false) return _error->Error("ProxyAutoDetect command '%s' failed!", AutoDetectProxyCmd.c_str()); char buf[512]; if (PipeFd.ReadLine(buf, sizeof(buf)) == nullptr) |