Add program which will mangle exactly 1 bit in a file.

security/nss/cmd/shlibsign/mangle/Makefile

@@ -0,0 +1,75 @@
+#! gmake
+#
+# The contents of this file are subject to the Mozilla Public
+# License Version 1.1 (the "License"); you may not use this file
+# except in compliance with the License. You may obtain a copy of
+# the License at http://www.mozilla.org/MPL/
+# 
+# Software distributed under the License is distributed on an "AS
+# IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
+# implied. See the License for the specific language governing
+# rights and limitations under the License.
+# 
+# The Original Code is the Netscape security libraries.
+# 
+# The Initial Developer of the Original Code is Netscape
+# Communications Corporation.  Portions created by Netscape are 
+# Copyright (C) 1994-2000 Netscape Communications Corporation.  All
+# Rights Reserved.
+# 
+# Contributor(s):
+# 
+# Alternatively, the contents of this file may be used under the
+# terms of the GNU General Public License Version 2 or later (the
+# "GPL"), in which case the provisions of the GPL are applicable 
+# instead of those above.  If you wish to allow use of your 
+# version of this file only under the terms of the GPL and not to
+# allow others to use your version of this file under the MPL,
+# indicate your decision by deleting the provisions above and
+# replace them with the notice and other provisions required by
+# the GPL.  If you do not delete the provisions above, a recipient
+# may use your version of this file under either the MPL or the
+# GPL.
+#
+
+#######################################################################
+# (1) Include initial platform-independent assignments (MANDATORY).   #
+#######################################################################
+
+include manifest.mn
+
+#######################################################################
+# (2) Include "global" configuration information. (OPTIONAL)          #
+#######################################################################
+
+include $(CORE_DEPTH)/coreconf/config.mk
+
+#######################################################################
+# (3) Include "component" configuration information. (OPTIONAL)       #
+#######################################################################
+
+#######################################################################
+# (4) Include "local" platform-dependent assignments (OPTIONAL).      #
+#######################################################################
+
+include ../../platlibs.mk
+
+
+#######################################################################
+# (5) Execute "global" rules. (OPTIONAL)                              #
+#######################################################################
+
+include $(CORE_DEPTH)/coreconf/rules.mk
+
+#######################################################################
+# (6) Execute "component" rules. (OPTIONAL)                           #
+#######################################################################
+
+
+#######################################################################
+# (7) Execute "local" rules. (OPTIONAL).                              #
+#######################################################################
+
+
+include ../../platrules.mk
+

security/nss/cmd/shlibsign/mangle/mangle.c

@@ -0,0 +1,183 @@
+/*
+ * The contents of this file are subject to the Mozilla Public
+ * License Version 1.1 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.mozilla.org/MPL/
+ * 
+ * Software distributed under the License is distributed on an "AS
+ * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
+ * implied. See the License for the specific language governing
+ * rights and limitations under the License.
+ * 
+ * The Original Code is the Netscape security libraries.
+ * 
+ * The Initial Developer of the Original Code is Netscape
+ * Communications Corporation.  Portions created by Netscape are 
+ * Copyright (C) 1994-2003 Netscape Communications Corporation.  All
+ * Rights Reserved.
+ * 
+ * Contributor(s):
+ * 
+ * Alternatively, the contents of this file may be used under the
+ * terms of the GNU General Public License Version 2 or later (the
+ * "GPL"), in which case the provisions of the GPL are applicable 
+ * instead of those above.  If you wish to allow use of your 
+ * version of this file only under the terms of the GPL and not to
+ * allow others to use your version of this file under the MPL,
+ * indicate your decision by deleting the provisions above and
+ * replace them with the notice and other provisions required by
+ * the GPL.  If you do not delete the provisions above, a recipient
+ * may use your version of this file under either the MPL or the
+ * GPL.
+ */
+
+/*
+ * Test program to mangle 1 bit in a binary
+ *
+ * $Id: mangle.c,v 1.1 2003/02/04 23:16:56 relyea%netscape.com Exp $
+ */
+
+#include "nspr.h"
+#include "plstr.h"
+#include "plgetopt.h"
+#include "prio.h"
+
+static void
+usage (char *program_name)
+{
+    PRFileDesc *pr_stderr;
+
+    pr_stderr = PR_STDERR;
+    PR_fprintf (pr_stderr, "Usage:");
+    PR_fprintf (pr_stderr, "%s -i shared_library_name -o byte_offset -b bit\n", program_name);
+}
+
+#ifdef notdef
+static char *
+mkoutput(const char *input)
+{
+    int in_len = PORT_Strlen(input);
+    char *output = PORT_Alloc(in_len+sizeof(SGN_SUFFIX));
+    int index = in_len + 1 - sizeof("."SHLIB_SUFFIX);
+
+    if ((index > 0) && 
+	(PORT_Strncmp(&input[index],
+			"."SHLIB_SUFFIX,sizeof("."SHLIB_SUFFIX)) == 0)) {
+	in_len = index;
+    }
+    PORT_Memcpy(output,input,in_len);
+    PORT_Memcpy(&output[in_len],SGN_SUFFIX,sizeof(SGN_SUFFIX));
+    return output;
+}
+
+
+static void
+lperror(const char *string)
+{
+     int errNum = PORT_GetError();
+     const char *error = SECU_Strerror(errNum);
+     fprintf(stderr,"%s: %s\n",string, error);
+}
+#endif
+
+
+int
+main (int argc, char **argv)
+{
+    /* buffers and locals */
+    PLOptState	*optstate;
+    char	*programName;
+    char	cbuf;
+
+    /* parameter set variables */
+    const char  *libFile = NULL; 	
+    int offset = -1;
+    int bitOffset = -1;
+
+    /* return values */
+    int		 retval = -1;  /* 0 - test succeeded.  -1 - test failed */
+    PRFileDesc *fd;
+    int bytesRead;
+    int bytesWritten;
+    int pos;
+
+    programName = PL_strrchr(argv[0], '/');
+    programName = programName ? (programName + 1) : argv[0];
+
+    optstate = PL_CreateOptState (argc, argv, "i:o:b:");
+    if (optstate == NULL) {
+	SECU_PrintError (programName, "PL_CreateOptState failed");
+	return -1;
+    }
+
+    while (PL_GetNextOpt (optstate) == PL_OPT_OK) {
+	switch (optstate->option) {
+          case 'i':
+            libFile = optstate->value;
+            break;
+
+          case 'o':
+            offset = atoi(optstate->value);
+            break;
+
+          case 'b':
+            bitOffset = atoi(optstate->value);
+            break;
+	}
+    }
+
+    if (libFile == NULL) {
+	usage(programName);
+	return -1;
+    }
+    if ((bitOffset >= 8) || (bitOffset < 0)) {
+	usage(programName);
+	return -1;
+    }
+
+    if (offset < 0) {
+	usage(programName);
+	return -1;
+    }
+
+    /* open the target signature file */
+    fd = PR_OpenFile(libFile,PR_RDWR,0666);
+    if (fd == NULL ) {
+	/* lperror(libFile); */
+	goto loser;
+    }
+
+    /* read the byte */
+    pos = PR_Seek(fd,offset, PR_SEEK_SET);
+    if (pos != offset) {
+	goto loser;
+    }
+    bytesRead = PR_Read(fd, &cbuf, 1);
+    if (bytesRead != 1) {
+	goto loser;
+    }
+
+    /* change it */
+    cbuf ^= 1 << bitOffset;
+
+    /* write it back out */
+    pos = PR_Seek(fd, offset, PR_SEEK_SET);
+    if (pos != offset) {
+	goto loser;
+    }
+    bytesWritten = PR_Write(fd, &cbuf, 1);
+    if (bytesWritten != 1) {
+	goto loser;
+    }
+
+    PR_Close(fd);
+    retval = 0;
+
+
+loser:
+
+    PR_Cleanup ();
+    return retval;
+}
+
+/*#DEFINES += -DSHLIB_SUFFIX=\"$(DLL_SUFFIX)\" -DSHLIB_PREFIX=\"$(DLL_PREFIX)\" */

security/nss/cmd/shlibsign/mangle/manifest.mn

@@ -0,0 +1,50 @@
+#
+# The contents of this file are subject to the Mozilla Public
+# License Version 1.1 (the "License"); you may not use this file
+# except in compliance with the License. You may obtain a copy of
+# the License at http://www.mozilla.org/MPL/
+# 
+# Software distributed under the License is distributed on an "AS
+# IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
+# implied. See the License for the specific language governing
+# rights and limitations under the License.
+# 
+# The Original Code is the Netscape security libraries.
+# 
+# The Initial Developer of the Original Code is Netscape
+# Communications Corporation.  Portions created by Netscape are 
+# Copyright (C) 1994-2000 Netscape Communications Corporation.  All
+# Rights Reserved.
+# 
+# Contributor(s):
+# 
+# Alternatively, the contents of this file may be used under the
+# terms of the GNU General Public License Version 2 or later (the
+# "GPL"), in which case the provisions of the GPL are applicable 
+# instead of those above.  If you wish to allow use of your 
+# version of this file only under the terms of the GPL and not to
+# allow others to use your version of this file under the MPL,
+# indicate your decision by deleting the provisions above and
+# replace them with the notice and other provisions required by
+# the GPL.  If you do not delete the provisions above, a recipient
+# may use your version of this file under either the MPL or the
+# GPL.
+#
+
+CORE_DEPTH = ../../../..
+
+# MODULE public and private header  directories are implicitly REQUIRED.
+MODULE = nss
+
+DEFINES += -DSHLIB_SUFFIX=\"$(DLL_SUFFIX)\" -DSHLIB_PREFIX=\"$(DLL_PREFIX)\"
+
+CSRCS = \
+	mangle.c \
+	$(NULL)
+
+
+# headers for the MODULE (defined above) are implicitly required.
+REQUIRES = 
+
+PROGRAM = mangle
+