* first (raw and ineffient) implementation

[apt.git] / apt-pkg / deb / dpkgpm.cc

diff --git a/apt-pkg/deb/dpkgpm.cc b/apt-pkg/deb/dpkgpm.cc
index c7a6b921f0d4af7b29b705de1e47aee6e4e50944..9ca519acddb1de9259a81442d0d52ed1bbba2e48 100644 (file)
--- a/apt-pkg/deb/dpkgpm.cc
+++ b/apt-pkg/deb/dpkgpm.cc
@@ -8,9 +8,6 @@
    ##################################################################### */
                                                                        /*}}}*/
 // Includes                                                            /*{{{*/
    ##################################################################### */
                                                                        /*}}}*/
 // Includes                                                            /*{{{*/

-#ifdef __GNUG__
-#pragma implementation "apt-pkg/dpkgpm.h"
-#endif

 #include <apt-pkg/dpkgpm.h>
 #include <apt-pkg/error.h>
 #include <apt-pkg/configuration.h>
 #include <apt-pkg/dpkgpm.h>
 #include <apt-pkg/error.h>
 #include <apt-pkg/configuration.h>


@@ -28,6 +25,11 @@
 #include <sstream>
 #include <map>
 
 #include <sstream>
 #include <map>
 

+#include <termios.h>
+#include <unistd.h>
+#include <sys/ioctl.h>
+#include <pty.h>
+

 #include <config.h>
 #include <apti18n.h>
                                                                        /*}}}*/
 #include <config.h>
 #include <apti18n.h>
                                                                        /*}}}*/


@@ -474,6 +476,8 @@ bool pkgDPkgPM::Go(int OutStatusFd)
         case Item::Install:
         Args[n++] = "--unpack";
         Size += strlen(Args[n-1]);
         case Item::Install:
         Args[n++] = "--unpack";
         Size += strlen(Args[n-1]);

+        Args[n++] = "--auto-deconfigure";
+        Size += strlen(Args[n-1]);

         break;
       }
       
         break;
       }
       


@@ -517,7 +521,24 @@ bool pkgDPkgPM::Go(int OutStatusFd)
         it doesn't die but we do! So we must also ignore it */
       sighandler_t old_SIGQUIT = signal(SIGQUIT,SIG_IGN);
       sighandler_t old_SIGINT = signal(SIGINT,SIG_IGN);
         it doesn't die but we do! So we must also ignore it */
       sighandler_t old_SIGQUIT = signal(SIGQUIT,SIG_IGN);
       sighandler_t old_SIGINT = signal(SIGINT,SIG_IGN);

-       
+
+      struct   termios tt;
+      struct   winsize win;
+      int      master;
+      int      slave;
+
+      tcgetattr(0, &tt);
+      ioctl(0, TIOCGWINSZ, (char *)&win);
+      if (openpty(&master, &slave, NULL, &tt, &win) < 0) {
+        fprintf(stderr, _("openpty failed\n"));
+      }
+
+      struct termios rtt;
+      rtt = tt;
+      cfmakeraw(&rtt);
+      rtt.c_lflag &= ~ECHO;
+      tcsetattr(0, TCSAFLUSH, &rtt);
+

        // Fork dpkg
       pid_t Child;
       _config->Set("APT::Keep-Fds::",fd[1]);
        // Fork dpkg
       pid_t Child;
       _config->Set("APT::Keep-Fds::",fd[1]);


@@ -526,8 +547,16 @@ bool pkgDPkgPM::Go(int OutStatusFd)
       // This is the child
       if (Child == 0)
       {
       // This is the child
       if (Child == 0)
       {

+        setsid();
+        ioctl(slave, TIOCSCTTY, 0);
+        close(master);
+        dup2(slave, 0);
+        dup2(slave, 1);
+        dup2(slave, 2);
+        close(slave);
+

         close(fd[0]); // close the read end of the pipe
         close(fd[0]); // close the read end of the pipe

-        
+

         if (chdir(_config->FindDir("DPkg::Run-Directory","/").c_str()) != 0)
            _exit(100);
         
         if (chdir(_config->FindDir("DPkg::Run-Directory","/").c_str()) != 0)
            _exit(100);
         


@@ -546,7 +575,8 @@ bool pkgDPkgPM::Go(int OutStatusFd)
            if (fcntl(STDIN_FILENO,F_SETFL,Flags & (~(long)O_NONBLOCK)) < 0)
               _exit(100);
         }
            if (fcntl(STDIN_FILENO,F_SETFL,Flags & (~(long)O_NONBLOCK)) < 0)
               _exit(100);
         }

-        
+
+

         /* No Job Control Stop Env is a magic dpkg var that prevents it
            from using sigstop */
         putenv("DPKG_NO_TSTP=yes");
         /* No Job Control Stop Env is a magic dpkg var that prevents it
            from using sigstop */
         putenv("DPKG_NO_TSTP=yes");


@@ -568,11 +598,19 @@ bool pkgDPkgPM::Go(int OutStatusFd)
 
       // the read buffers for the communication with dpkg
       char line[1024] = {0,};
 
       // the read buffers for the communication with dpkg
       char line[1024] = {0,};

+      

       char buf[2] = {0,0};
       char buf[2] = {0,0};

+      char term_buf[2] = {0,0};
+      char input_buf[2] = {0,0};

       
       // the result of the waitpid call
       int res;
       
       // the result of the waitpid call
       int res;

-
+      close(slave);
+      fcntl(0, F_SETFL, O_NONBLOCK);
+      fcntl(master, F_SETFL, O_NONBLOCK);
+      FILE *term_out = fopen("/var/log/dpkg-out.log","a");
+      chmod("/var/log/dpkg-out.log", 0600);
+      

       while ((res=waitpid(Child,&Status, WNOHANG)) != Child) {
         if(res < 0) {
            // FIXME: move this to a function or something, looks ugly here
       while ((res=waitpid(Child,&Status, WNOHANG)) != Child) {
         if(res < 0) {
            // FIXME: move this to a function or something, looks ugly here


@@ -586,18 +624,41 @@ bool pkgDPkgPM::Go(int OutStatusFd)
            signal(SIGINT,old_SIGINT);
            return _error->Errno("waitpid","Couldn't wait for subprocess");
         }
            signal(SIGINT,old_SIGINT);
            return _error->Errno("waitpid","Couldn't wait for subprocess");
         }

+
+        // wait for input or output here
+        
+        // FIXME: use select() instead of the rubish below

         
         // read a single char, make sure that the read can't block 
         // (otherwise we may leave zombies)
         
         // read a single char, make sure that the read can't block 
         // (otherwise we may leave zombies)

+         int term_len = read(master, term_buf, 1);
+        int input_len = read(0, input_buf, 1);

          int len = read(_dpkgin, buf, 1);
 
          int len = read(_dpkgin, buf, 1);
 

-        // nothing to read, wait a bit for more
+        // see if we have any input that needs to go to the 
+        // master pty
+        if(input_len > 0) 
+           write(master, input_buf, 1);
+
+        // see if we have any output that needs to be echoed
+        // and written to the log
+        if(term_len > 0) 
+        {
+           do
+           {
+              fwrite(term_buf, 1, 1, term_out);
+              write(1, term_buf, 1);
+           } while(read(master, term_buf, 1) > 0);
+           term_buf[0] = 0;
+        }
+
+        // nothing to read from dpkg , wait a bit for more

         if(len <= 0)
         {
            usleep(1000);
            continue;
         }
         if(len <= 0)
         {
            usleep(1000);
            continue;
         }

-        
+

         // sanity check (should never happen)
         if(strlen(line) >= sizeof(line)-10)
         {
         // sanity check (should never happen)
         if(strlen(line) >= sizeof(line)-10)
         {


@@ -703,22 +764,34 @@ bool pkgDPkgPM::Go(int OutStatusFd)
         line[0]=0;
       }
       close(_dpkgin);
         line[0]=0;
       }
       close(_dpkgin);

+      fclose(term_out);

 
       // Restore sig int/quit
       signal(SIGQUIT,old_SIGQUIT);
       signal(SIGINT,old_SIGINT);
 
       // Restore sig int/quit
       signal(SIGQUIT,old_SIGQUIT);
       signal(SIGINT,old_SIGINT);

+
+      tcsetattr(0, TCSAFLUSH, &tt);

        
       // Check for an error code.
       if (WIFEXITED(Status) == 0 || WEXITSTATUS(Status) != 0)
       {
        
       // Check for an error code.
       if (WIFEXITED(Status) == 0 || WEXITSTATUS(Status) != 0)
       {

-        RunScripts("DPkg::Post-Invoke");
-        if (WIFSIGNALED(Status) != 0 && WTERMSIG(Status) == SIGSEGV)
-           return _error->Error("Sub-process %s received a segmentation fault.",Args[0]);
-
-        if (WIFEXITED(Status) != 0)
-           return _error->Error("Sub-process %s returned an error code (%u)",Args[0],WEXITSTATUS(Status));
+        // if it was set to "keep-dpkg-runing" then we won't return
+        // here but keep the loop going and just report it as a error
+        // for later
+        bool stopOnError = _config->FindB("Dpkg::StopOnError",true);

         
         

-        return _error->Error("Sub-process %s exited unexpectedly",Args[0]);
+        if(stopOnError)
+           RunScripts("DPkg::Post-Invoke");
+
+        if (WIFSIGNALED(Status) != 0 && WTERMSIG(Status) == SIGSEGV) 
+           _error->Error("Sub-process %s received a segmentation fault.",Args[0]);
+        else if (WIFEXITED(Status) != 0)
+           _error->Error("Sub-process %s returned an error code (%u)",Args[0],WEXITSTATUS(Status));
+        else 
+           _error->Error("Sub-process %s exited unexpectedly",Args[0]);
+
+        if(stopOnError)
+           return false;

       }      
    }
 
       }      
    }