Added changing hostname of copter

Drone/client_config.ini

@@ -1,7 +1,7 @@
 [SERVER]
 port = 25000
 broadcast_port = 8181
-host = 192.168.1.101
+host = 192.168.1.13
 buffer_size = 1024
 
 [FILETRANSFER]
@@ -40,7 +40,7 @@ pitch = 0
 yaw = -90
 
 [PRIVATE]
-id = /hostname
+id = DESKTOP-H364ITR
 use_leds = True
 led_pin = 21
 x0 = 0

Drone/copter_client.py

@@ -56,6 +56,8 @@ class CopterClient(client.Client):
         self.USE_LEDS = self.config.getboolean('PRIVATE', 'use_leds')
         self.LED_PIN = self.config.getint('PRIVATE', 'led_pin')
 
+        self.RESTART_DHCPCD = self.config.getboolean('PRIVATE', 'restart_dhcpcd')
+
     def on_broadcast_bind(self):
         configure_chrony_ip(self.server_host)
         restart_service("chrony")
@@ -97,6 +99,7 @@ class CopterClient(client.Client):
 def restart_service(name):
     os.system("systemctl restart {}".format(name))
 
+
 def configure_chrony_ip(ip, path="/etc/chrony/chrony.conf", ip_index=1):
     try:
         with open(path, 'r') as f:
@@ -130,6 +133,98 @@ def configure_chrony_ip(ip, path="/etc/chrony/chrony.conf", ip_index=1):
     return True
 
 
+def configure_hostname(hostname):
+    path = "/etc/hostname"
+    try:
+        with open(path, 'r') as f:
+            raw_content = f.read()
+    except IOError as e:
+        print("Reading error {}".format(e))
+        return False
+
+    current_hostname = str(raw_content)
+
+    if current_hostname != hostname:
+        content = hostname + '\n'
+        try:
+            with open(path, 'w') as f:
+                f.write(content)
+        except IOError:
+            print("Error writing")
+            return False
+
+    return True
+
+
+def configure_hosts(hostname):
+    path = "/etc/hosts"
+    try:
+        with open(path, 'r') as f:
+            raw_content = f.read()
+    except IOError as e:
+        print("Reading error {}".format(e))
+        return False
+
+    index_start = raw_content.find("127.0.1.1", )
+    index_stop = raw_content.find("\n", index_start)
+
+    _ip, current_hostname = raw_content[index_start:index_stop].split()
+    if current_hostname != hostname:
+        content = raw_content[:index_start] + "{}       {}".format(_ip, hostname) + raw_content[index_stop:]
+        try:
+            with open(path, 'w') as f:
+                f.write(content)
+        except IOError:
+            print("Error writing")
+            return False
+
+    return True
+
+
+def configure_bashrc(hostname):
+    path = "~/.bashrc"
+    try:
+        with open(path, 'r') as f:
+            raw_content = f.read()
+    except IOError as e:
+        print("Reading error {}".format(e))
+        return False
+
+    index_start = raw_content.find("ROS_HOSTNAME='", ) + 14
+    index_stop = raw_content.find("'", index_start)
+
+    current_hostname = raw_content[index_start:index_stop]
+    if current_hostname != hostname:
+        content = raw_content[:index_start] + hostname + raw_content[index_stop:]
+        try:
+            with open(path, 'w') as f:
+                f.write(content)
+        except IOError:
+            print("Error writing")
+            return False
+
+    return True
+
+
+@messaging.request_callback("id")
+def _response_id(*args, **kwargs):
+    new_id = kwargs.get("new_id", None)
+    if new_id is not None:
+        old_id = client.active_client.client_id
+        if new_id != old_id:
+            cfg = client.ConfigOption("PRIVATE", "id", new_id)
+            client.active_client.write_config(True, cfg)
+            if new_id != '/hostname':
+                hostname = client.active_client.client_id
+                configure_hostname(hostname)
+                configure_hosts(hostname)
+                configure_bashrc(hostname)
+                if client.active_client.RESTART_DHCPCD:
+                    restart_service("dhcpcd")
+
+    return client.active_client.client_id
+
+
 @messaging.request_callback("selfcheck")
 def _response_selfcheck(*args, **kwargs):
     if check_state_topic(wait_new_status=True):

Drone/doc_2019-10-16_17-57-17.bashrc

@@ -0,0 +1,119 @@
+# ~/.bashrc: executed by bash(1) for non-login shells.
+# see /usr/share/doc/bash/examples/startup-files (in the package bash-doc)
+# for examples
+
+# If not running interactively, don't do anything
+case $- in
+    *i*) ;;
+      *) return;;
+esac
+
+# don't put duplicate lines or lines starting with space in the history.
+# See bash(1) for more options
+HISTCONTROL=ignoreboth
+
+# append to the history file, don't overwrite it
+shopt -s histappend
+
+# for setting history length see HISTSIZE and HISTFILESIZE in bash(1)
+HISTSIZE=1000
+HISTFILESIZE=2000
+
+# check the window size after each command and, if necessary,
+# update the values of LINES and COLUMNS.
+shopt -s checkwinsize
+
+# If set, the pattern "**" used in a pathname expansion context will
+# match all files and zero or more directories and subdirectories.
+#shopt -s globstar
+
+# make less more friendly for non-text input files, see lesspipe(1)
+#[ -x /usr/bin/lesspipe ] && eval "$(SHELL=/bin/sh lesspipe)"
+
+# set variable identifying the chroot you work in (used in the prompt below)
+if [ -z "${debian_chroot:-}" ] && [ -r /etc/debian_chroot ]; then
+    debian_chroot=$(cat /etc/debian_chroot)
+fi
+
+# set a fancy prompt (non-color, unless we know we "want" color)
+case "$TERM" in
+    xterm-color|*-256color) color_prompt=yes;;
+esac
+
+# uncomment for a colored prompt, if the terminal has the capability; turned
+# off by default to not distract the user: the focus in a terminal window
+# should be on the output of commands, not on the prompt
+force_color_prompt=yes
+
+if [ -n "$force_color_prompt" ]; then
+    if [ -x /usr/bin/tput ] && tput setaf 1 >&/dev/null; then
+	# We have color support; assume it's compliant with Ecma-48
+	# (ISO/IEC-6429). (Lack of such support is extremely rare, and such
+	# a case would tend to support setf rather than setaf.)
+	color_prompt=yes
+    else
+	color_prompt=
+    fi
+fi
+
+if [ "$color_prompt" = yes ]; then
+    PS1='${debian_chroot:+($debian_chroot)}\[\033[01;32m\]\u@\h\[\033[00m\]:\[\033[01;34m\]\w \$\[\033[00m\] '
+else
+    PS1='${debian_chroot:+($debian_chroot)}\u@\h:\w\$ '
+fi
+unset color_prompt force_color_prompt
+
+# If this is an xterm set the title to user@host:dir
+case "$TERM" in
+xterm*|rxvt*)
+    PS1="\[\e]0;${debian_chroot:+($debian_chroot)}\u@\h: \w\a\]$PS1"
+    ;;
+*)
+    ;;
+esac
+
+# enable color support of ls and also add handy aliases
+if [ -x /usr/bin/dircolors ]; then
+    test -r ~/.dircolors && eval "$(dircolors -b ~/.dircolors)" || eval "$(dircolors -b)"
+    alias ls='ls --color=auto'
+    #alias dir='dir --color=auto'
+    #alias vdir='vdir --color=auto'
+
+    alias grep='grep --color=auto'
+    alias fgrep='fgrep --color=auto'
+    alias egrep='egrep --color=auto'
+fi
+
+# colored GCC warnings and errors
+#export GCC_COLORS='error=01;31:warning=01;35:note=01;36:caret=01;32:locus=01:quote=01'
+
+# some more ls aliases
+#alias ll='ls -l'
+#alias la='ls -A'
+#alias l='ls -CF'
+
+# Alias definitions.
+# You may want to put all your additions into a separate file like
+# ~/.bash_aliases, instead of adding them here directly.
+# See /usr/share/doc/bash-doc/examples in the bash-doc package.
+
+if [ -f ~/.bash_aliases ]; then
+    . ~/.bash_aliases
+fi
+
+# enable programmable completion features (you don't need to enable
+# this, if it's already enabled in /etc/bash.bashrc and /etc/profile
+# sources /etc/bash.bashrc).
+if ! shopt -oq posix; then
+  if [ -f /usr/share/bash-completion/bash_completion ]; then
+    . /usr/share/bash-completion/bash_completion
+  elif [ -f /etc/bash_completion ]; then
+    . /etc/bash_completion
+  fi
+fi
+LANG='C.UTF-8'
+LC_ALL='C.UTF-8'
+ROS_DISTRO='kinetic'
+ROS_HOSTNAME='newname'
+source /opt/ros/kinetic/setup.bash
+source /home/pi/catkin_ws/devel/setup.bash