BSD 4.4 Lite Lib Sources

1 files changed, 133 insertions, 0 deletions

diff --git a/lib/librpc/secure_rpc/rpc/openchild.c b/lib/librpc/secure_rpc/rpc/openchild.c
new file mode 100644
index 0000000..b30e615
--- /dev/null
+++ b/lib/librpc/secure_rpc/rpc/openchild.c
@@ -0,0 +1,133 @@
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = 	"@(#)openchild.c	2.3 88/08/15 4.0 RPCSRC; from 1.7 88/02/08 SMI";
+#endif
+/*
+ * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
+ * unrestricted use provided that this legend is included on all tape
+ * media and as a part of the software program in whole or part.  Users
+ * may copy or modify Sun RPC without charge, but are not authorized
+ * to license or distribute it to anyone else except as part of a product or
+ * program developed by the user.
+ * 
+ * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
+ * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
+ * 
+ * Sun RPC is provided with no support and without any obligation on the
+ * part of Sun Microsystems, Inc. to assist in its use, correction,
+ * modification or enhancement.
+ * 
+ * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
+ * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
+ * OR ANY PART THEREOF.
+ * 
+ * In no event will Sun Microsystems, Inc. be liable for any lost revenue
+ * or profits or other special, indirect and consequential damages, even if
+ * Sun has been advised of the possibility of such damages.
+ * 
+ * Sun Microsystems, Inc.
+ * 2550 Garcia Avenue
+ * Mountain View, California  94043
+ */
+
+/*
+ * Copyright (c) 1988 by Sun Microsystems, Inc.
+ */
+
+/*
+ * Open two pipes to a child process, one for reading, one for writing.
+ * The pipes are accessed by FILE pointers. This is NOT a public
+ * interface, but for internal use only!
+ */
+#include <stdio.h>
+
+extern char *malloc();
+extern char *rindex();
+extern char *sprintf();
+
+static char *basename();
+static char SHELL[] = "/bin/sh";
+
+
+/*
+ * returns pid, or -1 for failure
+ */
+_openchild(command, fto, ffrom)
+	char *command;
+	FILE **fto;
+	FILE **ffrom;
+{
+	int i;
+	int pid;
+	int pdto[2];
+	int pdfrom[2];
+	char *com;
+
+		
+	if (pipe(pdto) < 0) {
+		goto error1;
+	}
+	if (pipe(pdfrom) < 0) {
+		goto error2;
+	}
+	switch (pid = vfork()) {
+	case -1:
+		goto error3;
+
+	case 0:
+		/* 
+		 * child: read from pdto[0], write into pdfrom[1]
+		 */
+		(void) close(0); 
+		(void) dup(pdto[0]);
+		(void) close(1); 
+		(void) dup(pdfrom[1]);
+		for (i = _rpc_dtablesize() - 1; i >= 3; i--) {
+			(void) close(i);
+		}
+		com = malloc((unsigned) strlen(command) + 6);
+		if (com == NULL) {
+			_exit(~0);
+		}	
+		(void) sprintf(com, "exec %s", command);
+		execl(SHELL, basename(SHELL), "-c", com, NULL);
+		_exit(~0);
+ 
+	default:
+		/*
+		 * parent: write into pdto[1], read from pdfrom[0]
+		 */
+		*fto = fdopen(pdto[1], "w");
+		(void) close(pdto[0]);
+		*ffrom = fdopen(pdfrom[0], "r");
+		(void) close(pdfrom[1]);
+		break;
+	}
+	return (pid);
+
+	/*
+	 * error cleanup and return
+	 */
+error3:
+	(void) close(pdfrom[0]);
+	(void) close(pdfrom[1]);
+error2:
+	(void) close(pdto[0]);
+	(void) close(pdto[1]);
+error1:
+	return (-1);
+}
+
+static char *
+basename(path)
+	char *path;
+{
+	char *p;
+
+	p = rindex(path, '/');
+	if (p == NULL) {
+		return (path);
+	} else {
+		return (p + 1);
+	}
+}