X-Git-Url: https://arthur.barton.de/cgi-bin/gitweb.cgi?p=ngircd-alex.git;a=blobdiff_plain;f=src%2Fngircd%2Fproc.c;h=d68d714da44d77eb9b158f128e0f52775b408315;hp=aace8053c00c2cca27f2a24ed0490f1271137f0e;hb=a13bb78b1e7adf7c261ac427341c397ef9a6a1ed;hpb=03628dbeaf40a9de34b3eb6d5bf6dd34eed8248c

diff --git a/src/ngircd/proc.c b/src/ngircd/proc.c
index aace8053..d68d714d 100644
--- a/src/ngircd/proc.c
+++ b/src/ngircd/proc.c
@@ -1,6 +1,6 @@
 /*
  * ngIRCd -- The Next Generation IRC Daemon
- * Copyright (c)2001-2010 Alexander Barton (alex@barton.de)
+ * Copyright (c)2001-2014 Alexander Barton (alex@barton.de) and Contributors.
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -16,20 +16,19 @@
  * Process management
  */
 
-#include "imp.h"
 #include <assert.h>
 #include <errno.h>
 #include <signal.h>
 #include <string.h>
 #include <stdlib.h>
+#include <sys/types.h>
 #include <unistd.h>
+#include <time.h>
 
 #include "log.h"
 #include "io.h"
-#include "conn.h"
-
-#include "exp.h"
 #include "sighandlers.h"
+
 #include "proc.h"
 
 /**
@@ -50,6 +49,9 @@ GLOBAL pid_t
 Proc_Fork(PROC_STAT *proc, int *pipefds, void (*cbfunc)(int, short), int timeout)
 {
 	pid_t pid;
+#ifndef HAVE_ARC4RANDOM
+	unsigned int seed;
+#endif
 
 	assert(proc != NULL);
 	assert(pipefds != NULL);
@@ -61,6 +63,9 @@ Proc_Fork(PROC_STAT *proc, int *pipefds, void (*cbfunc)(int, short), int timeout
 		return -1;
 	}
 
+#ifndef HAVE_ARC4RANDOM
+	seed = (unsigned int)rand();
+#endif
 	pid = fork();
 	switch (pid) {
 	case -1:
@@ -71,12 +76,17 @@ Proc_Fork(PROC_STAT *proc, int *pipefds, void (*cbfunc)(int, short), int timeout
 		return -1;
 	case 0:
 		/* New child process: */
+#ifdef HAVE_ARC4RANDOM_STIR
+		arc4random_stir();
+#endif
+#ifndef HAVE_ARC4RANDOM
+		srand(seed ^ (unsigned int)time(NULL) ^ getpid());
+#endif
 		Signals_Exit();
 		signal(SIGTERM, Proc_GenericSignalHandler);
 		signal(SIGALRM, Proc_GenericSignalHandler);
 		close(pipefds[0]);
 		alarm(timeout);
-		Conn_CloseAllSockets();
 		return 0;
 	}
 
@@ -135,14 +145,28 @@ Proc_Read(PROC_STAT *proc, void *buffer, size_t buflen)
 			return 0;
 		Log(LOG_CRIT, "Can't read from child process %ld: %s",
 		    proc->pid, strerror(errno));
+		Proc_Close(proc);
 		bytes_read = 0;
+	} else if (bytes_read == 0) {
+		/* EOF: clean up */
+		LogDebug("Child process %ld: EOF reached, closing pipe.",
+		         proc->pid);
+		Proc_Close(proc);
 	}
-#if DEBUG
-	else if (bytes_read == 0)
-		LogDebug("Can't read from child process %ld: EOF", proc->pid);
-#endif
-	Proc_InitStruct(proc);
 	return (size_t)bytes_read;
 }
 
+/**
+ * Close pipe to a forked child process.
+ */
+GLOBAL void
+Proc_Close(PROC_STAT *proc)
+{
+	/* Close socket, if it exists */
+	if (proc->pipe_fd >= 0)
+		io_close(proc->pipe_fd);
+
+	Proc_InitStruct(proc);
+}
+
 /* -eof- */