joshenders

#!/bin/bash

start=1048576 # decimal offset of data on drive (past MBR, 1MB)
end=10485760  # decimal offset of data on drive (well past weird '...U...N.b..' structures, 10MB)
image=/mnt/seagate/wd_backup.img
mount=/mnt/wd

for ((offset=$start; offset<=$end; offset++)); do
    echo "trying offset: $offset"
    status="$(mount -o ro,offset=$offset,loop -t ntfs $image $mount >/dev/null 2>&1; echo $?)"

joshenders

#!/bin/bash
# https://gist.github.com/joshenders/52cb78bedaea6787faac

# This script uses the BSD variants of commands and is intended to
# be run on an unmodified installation of OSX.

pmset noidle &

now=$(date +%s)
duration=$((86400*3)) # 3days

joshenders

function certchain() {
    # Usage: certchain
    # Display PKI chain-of-trust for a given domain
    # GistID: https://gist.github.com/joshenders/cda916797665de69ebcd
    if [[ "$#" -ne 1 ]]; then
        echo "Usage: ${FUNCNAME} <ip|domain[:port]>"
        return 1
    fi

    local host_port="$1"

joshenders

Importing Hand-Rolled C Header Files in LLDB

Scenario

• We're debugging a dylib, libhello.dylib
• The dylib is linked from hello
• The exported function is helloworld()
• We do not have source, but have reversed a struct from the library and created a hand-crafted header file

Header File

joshenders

Making a UEFI bootable iPXE USB drive

Build the UEFI executable for iPXE

# First we'll clone iPXE
$ git clone git://git.ipxe.org/ipxe.git
# Go into the src directory of the cloned git repo
$ cd ipxe/src
# Compile the UEFI iPXE executable

joshenders

# This file is sourced by /etc/init.d/sabnzbdplus
#
# When SABnzbd+ is started using the init script, the
# --daemon option is always used, and the program is
# started under the account of $USER, as set below.
#
# Each setting is marked either "required" or "optional";
# leaving any required setting unconfigured will cause
# the service to not start.

joshenders

# Allow read-only ZoL commands to be called through sudo without a password.

# Cmnd alias specification
Cmnd_Alias RO_ZFS = \
  /sbin/zfs "", /sbin/zfs help *, \
  /sbin/zfs get, /sbin/zfs get *, \
  /sbin/zfs list, /sbin/zfs list *, \
  /sbin/zpool "", /sbin/zpool help *, \
  /sbin/zpool iostat, /sbin/zpool iostat *, \
  /sbin/zpool list, /sbin/zpool list *, \

joshenders

--- libhttpd.c	2014-12-10 12:53:07.000000000 -0800
+++ libhttpd.c.patched	2015-02-07 22:44:59.183663432 -0800
@@ -2231,6 +2231,12 @@
 		if ( strcasecmp( cp, "keep-alive" ) == 0 )
 		    hc->keep_alive = 1;
 		}
+        else if ( strncasecmp( buf, "X-Forwarded-For:", 16 ) == 0 )
+        { // Use real IP if available
+        cp = &buf[16];
+        cp += strspn( cp, " \t" );

joshenders

--- debian/varnish.init	2016-12-13 01:13:34.465123880 +0000
+++ debian/varnish.init.new	2016-12-13 01:18:50.215749771 +0000
@@ -88,8 +88,10 @@
     log_daemon_msg "Reloading $DESC" "$NAME"
     if /usr/share/varnish/reload-vcl -q; then
         log_end_msg 0
+        return 0
     else
         log_end_msg 1
+        return 1

joshenders

--- reload-vcl	2011-10-29 13:24:10.000000000 +0000
+++ /usr/share/varnish/reload-vcl	2016-12-11 09:51:08.696300339 +0000
@@ -1,9 +1,13 @@
 #!/bin/sh
-
+#
 # reload-varnish: Script to reload varnishd from VCL defined in
 # /etc/default/varnish.
 #
 # Stig Sandbeck Mathisen <ssm@debian.org>