- // option is "Acquire::http::Proxy-Auto-Detect" but we allow the old
- // name without the dash ("-")
- AutoDetectProxyCmd = _config->Find("Acquire::http::Proxy-Auto-Detect",
- _config->Find("Acquire::http::ProxyAutoDetect"));
-
- if (AutoDetectProxyCmd.empty())
- return true;
-
- if (Debug)
- clog << "Using auto proxy detect command: " << AutoDetectProxyCmd << endl;
-
- int Pipes[2] = {-1,-1};
- if (pipe(Pipes) != 0)
- return _error->Errno("pipe", "Failed to create Pipe");
-
- 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;
- execv(Args[0],(char **)Args);
- cerr << "Failed to exec method " << Args[0] << endl;
- _exit(100);
- }
- char buf[512];
- int InFd = Pipes[0];
- close(Pipes[1]);
- int res = read(InFd, buf, sizeof(buf)-1);
- ExecWait(Process, "ProxyAutoDetect", true);
-
- if (res < 0)
- return _error->Errno("read", "Failed to read");
- 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;
-
- if (strstr(buf, "http://") == buf)
- _config->Set("Acquire::http::proxy", _strstrip(buf));
-
- return true;