From 08ded4d6a04d28c61a53fe550133b146752badfe Mon Sep 17 00:00:00 2001
From: Michael Vogt <michael.vogt@ubuntu.com>
Date: Mon, 22 Nov 2010 10:40:54 +0100
Subject: * methods/http.cc: - do not hang if Acquire::http::ProxyAutoDetect
can not be executed or returns no data (LP: #654393)
---
methods/http.cc | 17 +++++++++++++----
1 file changed, 13 insertions(+), 4 deletions(-)
(limited to 'methods')
diff --git a/methods/http.cc b/methods/http.cc
index 25e31de9a..dfc1619e3 100644
--- a/methods/http.cc
+++ b/methods/http.cc
@@ -1349,9 +1349,10 @@ bool HttpMethod::AutoDetectProxy()
pid_t Process = ExecFork();
if (Process == 0)
{
+ close(Pipes[0]);
dup2(Pipes[1],STDOUT_FILENO);
SetCloseExec(STDOUT_FILENO,false);
-
+
const char *Args[2];
Args[0] = AutoDetectProxyCmd.c_str();
Args[1] = 0;
@@ -1361,10 +1362,18 @@ bool HttpMethod::AutoDetectProxy()
}
char buf[512];
int InFd = Pipes[0];
- if (read(InFd, buf, sizeof(buf)) < 0)
+ close(Pipes[1]);
+ int res = read(InFd, buf, sizeof(buf));
+ ExecWait(Process, "ProxyAutoDetect", true);
+
+ if (res < 0)
return _error->Errno("read", "Failed to read");
- ExecWait(Process, "ProxyAutoDetect");
-
+ if (res == 0)
+ return _error->Warning("ProxyAutoDetect returned no data");
+
+ // add trailing \0
+ buf[res] = 0;
+
if (Debug)
clog << "auto detect command returned: '" << buf << "'" << endl;
--
cgit v1.2.3