- Added a setenv replacement for systems which lack it

4 files changed, 27 insertions, 1 deletions

diff --git a/ChangeLog b/ChangeLog
index d7ea7b76..0f069dfd 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -13,6 +13,7 @@
  - Fix EGD problems (Thanks to Ben Taylor <bent@clark.net>)
  - Retry /dev/urandom reads interrupted by signal (report from 
    Robert Hardy <rhardy@webcon.net>)
+ - Added a setenv replacement for systems which lack it
 
 19991121
  - OpenBSD CVS Changes:
diff --git a/configure.in b/configure.in
index 0678fa4c..a831b921 100644
--- a/configure.in
+++ b/configure.in
@@ -58,7 +58,7 @@ dnl Checks for header files.
 AC_CHECK_HEADERS(pty.h endian.h paths.h lastlog.h shadow.h netgroup.h maillock.h sys/select.h sys/time.h)
 
 dnl Checks for library functions.
-AC_CHECK_FUNCS(openpty strlcpy strlcat mkdtemp arc4random setproctitle setlogin)
+AC_CHECK_FUNCS(openpty strlcpy strlcat mkdtemp arc4random setproctitle setlogin setenv)
 
 AC_CHECK_FUNC(login, 
 	[AC_DEFINE(HAVE_LOGIN)],
diff --git a/helper.c b/helper.c
index 47e797b6..91a78b57 100644
--- a/helper.c
+++ b/helper.c
@@ -149,3 +149,24 @@ void setproctitle(const char *fmt, ...)
 	/* FIXME */
 }
 #endif /* !HAVE_SETPROCTITLE */
+
+#ifndef HAVE_SETENV
+int setenv(const char *name, const char *value, int overwrite)
+{
+	char *env_string;
+	int result;
+	
+	/* Don't overwrite existing env. var if overwrite is 0 */
+	if (!overwrite && (getenv(name) != NULL))
+		return(0);
+	
+	env_string = xmalloc(strlen(name) + strlen(value) + 2);
+	sprintf(env_string, "%s=%s", name, value);
+	
+	result = putenv(env_string);
+	
+	xfree(env_string);
+	
+	return(result);	
+}
+#endif /* !HAVE_SETENV */
diff --git a/helper.h b/helper.h
index 0e53fac4..68e0a853 100644
--- a/helper.h
+++ b/helper.h
@@ -47,4 +47,8 @@ void arc4random_stir(void);
 void setproctitle(const char *fmt, ...);
 #endif /* !HAVE_SETPROCTITLE */
 
+#ifndef HAVE_SETENV
+int setenv(const char *name, const char *value, int overwrite);
+#endif /* !HAVE_SETENV */
+
 #endif /* _HELPER_H */