mirror of
https://github.com/prurigro/buildhosts.git
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Initial commit with functional behaviour, manpage, README and license
This commit is contained in:
Kevin MacMartin
commit
cc06b4432f
4 changed files with 347 additions and 0 deletions
21
LICENSE
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21
LICENSE
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@ -0,0 +1,21 @@
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The MIT License (MIT)
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Copyright (c) 2014 Kevin M
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||||||
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
|
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furnished to do so, subject to the following conditions:
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||||||
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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||||||
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||||||
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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||||||
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||||
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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43
README.md
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43
README.md
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# buildhosts #
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Build and maintain `/etc/hosts` while including lists imported from local and remote hosts list sources.
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## Instructions ##
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**Note:** All instructions should be performed as the **root** user, or using the `sudo` command to run commands with **root** permissions.
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||||||
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## Enable Remote Sources ##
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||||||
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||||||
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1. The first time you run the `set` command, `/etc/hosts` will be moved to `/etc/hosts.core`, and the file `/etc/hosts.sources` will be created using the default sources list. The `/etc/hosts` file will then be generated by combining `/etc/hosts.core` and the resulting contents of the downloaded sources in `/etc/hosts.sources`.
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2. You can now open `/etc/hosts.sources` and remove or comment out (by adding `#` in front) any sources you don't wish to use, as well as add new ones. Sources can remote (ie: `http://adaway.org/hosts.txt`) as well as local (ie: `file:///etc/hosts.d/mylist.txt`).
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3. If you want to make any changes to the contents of what used to be `/etc/hosts`, you should now make them to `/etc/hosts.core`, and you'll need to rerun the `set` command to have them applied.
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4. Once you're done customizing your configuration, run the `set` command again and the `/etc/hosts` file will be regenerated using the current list of sources and your up-to-date `/etc/hosts.core` file.
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||||||
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## Disable Remote Sources ##
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||||||
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1. To disable the configured hosts lists, run the `unset` command and `/etc/hosts.core` will be moved back to `/etc/hosts`.
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2. The `/etc/hosts.sources` file will continue to exist until it's manually deleted, and it will be used again the next time remote sources are enabled.
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||||||
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||||||
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## Notes on /etc/hosts.sources ##
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* On each line of `/etc/hosts.sources`, after `#` is commented/skipped.
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* Colour output can be disabled by setting the variable `NOCOL=1`.
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* The `$HOSTS_SYSTEM` variable can be set to an alternative location to configure a different file to be used for `/etc/hosts`.
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* Similarly, the `$HOSTS_CORE` and `$HOSTS_SOURCES` variables (which default to `$HOSTS_SYSTEM.core` and `$HOSTS_SYSTEM.sources` and will automatically change when `$HOSTS_SYSTEM` is changed), can be set to alternative locations to configure the use of different files.
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## Commands ##
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* `buildhosts set`: generate `/etc/hosts` using `/etc/hosts.core` and the configured sources
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* `buildhosts unset`: remove lists imported from hosts list sources and restore `/etc/hosts`
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* `buildhosts help`: display the help
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## Credits ##
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Written by Kevin MacMartin:
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* [GitHub Projects](https://github.com/prurigro)
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* [Arch Linux AUR Packages](https://aur.archlinux.org/packages/?SeB=m&K=prurigro)
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||||||
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||||||
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## License ##
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||||||
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Released under the [MIT license](http://opensource.org/licenses/MIT).
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buildhosts
Executable file
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buildhosts
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#!/usr/bin/env bash
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#
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# buildhosts - Build and maintain /etc/hosts while including lists
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# imported from local and remote hosts list sources
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#
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||||||
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# Instructions (as root):
|
||||||
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#
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# Enable Remote Sources
|
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# 1. The first time you run the 'set' command, /etc/hosts will be
|
||||||
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# moved to /etc/hosts.core, and the file /etc/hosts.sources will
|
||||||
|
# be created using the default sources list. The /etc/hosts file
|
||||||
|
# will then be generated by combining /etc/hosts.core and the
|
||||||
|
# resulting contents of the downloaded sources in
|
||||||
|
# /etc/hosts.sources.
|
||||||
|
# 2. You can now open /etc/hosts.sources and remove or comment out
|
||||||
|
# (by adding # in front) any sources you don't wish to use, as
|
||||||
|
# well as add new ones. Sources can remote
|
||||||
|
# (ie: http://adaway.org/hosts.txt) as well as local
|
||||||
|
# (ie: file:///etc/hosts.d/mylist.txt).
|
||||||
|
# 3. If you want to make any changes to the contents of what used to
|
||||||
|
# be /etc/hosts, you should now make them to /etc/hosts.core, and
|
||||||
|
# you'll need to rerun the 'set' command to have them applied.
|
||||||
|
# 4. Once you're done customizing your configuration, run the 'set'
|
||||||
|
# command again and the /etc/hosts file will be regenerated using
|
||||||
|
# the current list of sources and your up-to-date /etc/hosts.core
|
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# file.
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||||||
|
#
|
||||||
|
# Disable Remote Sources
|
||||||
|
# 1. To disable the configured hosts lists, run the 'unset' command
|
||||||
|
# and /etc/hosts.core will be moved back to /etc/hosts.
|
||||||
|
# 2. The /etc/hosts.sources file will continue to exist until it's
|
||||||
|
# manually deleted, and it will be used again the next time remote
|
||||||
|
# sources are enabled.
|
||||||
|
#
|
||||||
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# Notes on /etc/hosts.sources
|
||||||
|
# * On each line of /etc/hosts.sources, after # is commented/skipped.
|
||||||
|
# * Colour output can be disabled by setting the variable NOCOL=1.
|
||||||
|
# * The $HOSTS_SYSTEM variable can be set to an alternative location
|
||||||
|
# to configure a different file to be used for /etc/hosts.
|
||||||
|
# * Similarly, the $HOSTS_CORE and $HOSTS_SOURCES variables (which
|
||||||
|
# default to $HOSTS_SYSTEM.core and $HOSTS_SYSTEM.sources and will
|
||||||
|
# automatically change if $HOSTS_SYSTEM is changed), can be set to
|
||||||
|
# alternative locations to configure the use of different files.
|
||||||
|
#
|
||||||
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# by: Kevin MacMartin <prurigro@gmail.com>
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# released under the MIT license
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#
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|
||||||
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# User variables
|
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|
[[ -z "$HOSTS_SYSTEM" ]] && HOSTS_SYSTEM="/etc/hosts"
|
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[[ -z "$HOSTS_CORE" ]] && HOSTS_CORE="${HOSTS_SYSTEM}.core"
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||||||
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[[ -z "$HOSTS_SOURCES" ]] && HOSTS_SOURCES="${HOSTS_SYSTEM}.sources"
|
||||||
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||||||
|
# Default list of sources (used to generate $HOSTS_SOURCES when it doesn't exist)
|
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DEFAULT_SOURCES=(
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|
'http://winhelp2002.mvps.org/hosts.txt'
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'http://adaway.org/hosts.txt'
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'http://hosts-file.net/ad_servers.txt'
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||||||
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'http://pgl.yoyo.org/adservers/serverlist.php?hostformat=hosts&showintro=0&mimetype=plaintext'
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)
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||||||
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# Set the script name
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BUILDHOSTS_SCRIPT="$(basename $0)"
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||||||
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# Configure colours
|
||||||
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if [[ "$NOCOL" -eq 1 ]]; then
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HEADINGCOL="|"
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else
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HEADINGCOL="\e[1;41m"
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SUCCESSCOL="\e[1;40m"
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FAILCOL="\e[1;40m"
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RESETCOL="\e[0m"
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fi
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# Help function: display help text
|
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function buildhosts_help(){
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echo -e "${HEADINGCOL} ${BUILDHOSTS_SCRIPT}:${RESETCOL} build and maintain /etc/hosts with local and remote hosts list files\n${HEADINGCOL} ${RESETCOL}"
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||||||
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echo -e "${HEADINGCOL} commands:${RESETCOL}"
|
||||||
|
echo -e "${HEADINGCOL} ${RESETCOL}${SUCCESSCOL} ${BUILDHOSTS_SCRIPT} set:${RESETCOL} generate /etc/hosts using /etc/hosts.core and the configured sources"
|
||||||
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echo -e "${HEADINGCOL} ${RESETCOL}${SUCCESSCOL} ${BUILDHOSTS_SCRIPT} unset:${RESETCOL} remove lists imported from hosts list sources and restore /etc/hosts"
|
||||||
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echo -e "${HEADINGCOL} ${RESETCOL}${SUCCESSCOL} ${BUILDHOSTS_SCRIPT} help:${RESETCOL} display this help"
|
||||||
|
[[ "$1" -eq 1 ]] && exit 0
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||||||
|
}
|
||||||
|
|
||||||
|
# Error function: display error then exit unsuccessfully
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||||||
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function buildhosts_error() {
|
||||||
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echo -e "${HEADINGCOL} ${RESETCOL}${FAILCOL} ! ERROR:${RESETCOL}${FAILCOL} ${1}${RESETCOL}"
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||||||
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[[ "$2" -eq 1 ]] && echo -e "${HEADINGCOL} ${RESETCOL}" && buildhosts_help
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||||||
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exit 1
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||||||
|
}
|
||||||
|
|
||||||
|
# The set function to generate or regenerate /etc/hosts using /etc/hosts.core and the list of sources
|
||||||
|
function buildhosts_set() {
|
||||||
|
# If $HOSTS_SOURCES doesn't exist, generate one using the default list of sources
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||||||
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if [[ ! -f "$HOSTS_SOURCES" ]]; then
|
||||||
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echo -e "${HEADINGCOL} Generating Default Sources:${RESETCOL} ${HOSTS_SOURCES}"
|
||||||
|
echo '# file:///etc/hosts.d/localhostlist.txt' >> "$HOSTS_SOURCES"
|
||||||
|
echo '# http://domain.com/remotehostlist.txt' >> "$HOSTS_SOURCES"
|
||||||
|
for source in "${DEFAULT_SOURCES[@]}"; do
|
||||||
|
echo "$source" >> "$HOSTS_SOURCES"
|
||||||
|
done
|
||||||
|
fi
|
||||||
|
|
||||||
|
# Fail if $HOSTS_SOURCES contains no sources after trimming comments
|
||||||
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[[ -n $(sed 's|^\ *#.*$||' "$HOSTS_SOURCES" | tr -d "\n") ]] || buildhosts_error "No sources available in ${HOSTS_SOURCES}"
|
||||||
|
|
||||||
|
# If $HOSTS_CORE doesn't exist and $HOSTS_SYSTEM does, move $HOSTS_SYSTEM to $HOSTS_CORE
|
||||||
|
if [ -f "$HOSTS_SYSTEM" -a ! -f "$HOSTS_CORE" ]; then
|
||||||
|
echo -e "${HEADINGCOL} Moving:${RESETCOL} ${HOSTS_SYSTEM} to ${HOSTS_CORE}"
|
||||||
|
cp "$HOSTS_SYSTEM" "$HOSTS_CORE"
|
||||||
|
fi
|
||||||
|
|
||||||
|
# Generate the hosts list using the URLs in the $HOSTS_SOURCES
|
||||||
|
unset TMPHOSTS
|
||||||
|
while read -r source; do
|
||||||
|
if [[ -n "$source" ]]; then
|
||||||
|
echo -e "${HEADINGCOL} Downloading:${RESETCOL} ${source}"
|
||||||
|
|
||||||
|
# Download the the current source into $SRCDATA and fail if the result is empty
|
||||||
|
SRCDATA=$(curl -C - -s "$source" | tr -d "\r")
|
||||||
|
[[ -n "$SRCDATA" ]] || buildhosts_error "Could not download list @ ${source}"
|
||||||
|
|
||||||
|
# If this isn't the first source, add a newline at the top
|
||||||
|
[[ -n "$TMPHOSTS" ]] && SRCDATA=$(echo -e "\n${SRCDATA}")
|
||||||
|
|
||||||
|
# Strip comments, then add the source to the end of $TMPHOSTS
|
||||||
|
TMPHOSTS=${TMPHOSTS}$(sed 's|\ *#.*$||' <<< "$SRCDATA")
|
||||||
|
fi
|
||||||
|
done < <(sed 's|^\ *#.*$||' "$HOSTS_SOURCES")
|
||||||
|
|
||||||
|
# Sort and remove duplicates, change 0.0.0.0 to 127.0.0.1, and remove non-127.0.0.1 redirections
|
||||||
|
TMPHOSTS=$(sort -u < <(sed 's|\t| |;s|^\ *[0-9]*\.[0-9]*\.[0-9]*\.[0-9]*|127\.0\.0\.1|;
|
||||||
|
s|^127\.0\.0\.1\ \ *localhost\ *$||;
|
||||||
|
s|^\ *[^1].*$||' <<< "$TMPHOSTS"))
|
||||||
|
|
||||||
|
# Add the system hosts file to the hosts list and warn if $HOSTS_CORE is missing
|
||||||
|
echo -e "${HEADINGCOL} Writing:${RESETCOL} ${HOSTS_CORE} and $(wc -l <<< "$TMPHOSTS") host source entries to ${HOSTS_SYSTEM}"
|
||||||
|
[[ -f "$HOSTS_CORE" ]] \
|
||||||
|
&& TMPHOSTS=$(cat "$HOSTS_CORE")$(echo -e "\n\n# Generated Host List (${BUILDHOSTS_SCRIPT})")${TMPHOSTS} \
|
||||||
|
|| echo -e "${HEADINGCOL} ${RESETCOL}${FAILCOL} Warning:${RESETCOL} Core hosts file ${HOSTS_CORE} does not exist"
|
||||||
|
|
||||||
|
# Write $TMPHOSTS to $HOSTS_SYSTEM if it's not empty
|
||||||
|
[[ -n "$TMPHOSTS" ]] && echo -e "$TMPHOSTS" > "$HOSTS_SYSTEM"
|
||||||
|
if [[ -n $(cat "$HOSTS_SYSTEM") ]]; then
|
||||||
|
echo -e "${HEADINGCOL} ${RESETCOL}${SUCCESSCOL} Done!${RESETCOL}"
|
||||||
|
else
|
||||||
|
echo -e "${HEADINGCOL} ${RESETCOL}${FAILCOL} Failed...${RESETCOL} (unseting to core hosts file)"
|
||||||
|
cp "$MAINHOSTS" "$HOSTS_SYSTEM"
|
||||||
|
buildhosts_error "The generated hosts file @ ${HOSTS_SYSTEM} could not be created"
|
||||||
|
exit 1
|
||||||
|
fi
|
||||||
|
}
|
||||||
|
|
||||||
|
function buildhosts_unset() {
|
||||||
|
# Fail if $HOSTS_CORE doesn't exist
|
||||||
|
[[ -f "$HOSTS_CORE" ]] || buildhosts_error "The core file ${HOSTS_CORE} does not exist, cannot unset"
|
||||||
|
|
||||||
|
# Fail if $HOSTS_CORE is empty when all comments are removed
|
||||||
|
[[ -n $(sed 's|^\ *#.*$||' "$HOSTS_CORE" | tr -d "\n") ]] || buildhosts_error "The core file ${HOSTS_CORE} contains no information, cannot unset"
|
||||||
|
|
||||||
|
# Move $HOSTS_CORE to $HOSTS_SYSTEM
|
||||||
|
echo -e "${HEADINGCOL} Moving:${RESETCOL} ${HOSTS_CORE} to ${HOSTS_SYSTEM}"
|
||||||
|
mv "$HOSTS_CORE" "$HOSTS_SYSTEM" \
|
||||||
|
&& echo -e "${HEADINGCOL} ${RESETCOL}${SUCCESSCOL} Done!${RESETCOL}" \
|
||||||
|
|| buildhosts_error "Could not move ${HOSTS_CORE} to ${HOSTS_SYSTEM}"
|
||||||
|
}
|
||||||
|
|
||||||
|
# Fail if the user isn't root
|
||||||
|
[[ $EUID -eq 0 ]] || buildhosts_error "You must run ${BUILDHOSTS_SCRIPT} as root"
|
||||||
|
|
||||||
|
# Undo changes to /etc/hosts when the user runs with the disable command
|
||||||
|
[[ -n "$1" ]] || buildhosts_error "You must run ${BUILDHOSTS_SCRIPT} with a valid argument" 1
|
||||||
|
|
||||||
|
case "$1" in
|
||||||
|
set)
|
||||||
|
buildhosts_set
|
||||||
|
;;
|
||||||
|
unset)
|
||||||
|
buildhosts_unset
|
||||||
|
;;
|
||||||
|
help)
|
||||||
|
buildhosts_help 1
|
||||||
|
;;
|
||||||
|
*)
|
||||||
|
buildhosts_error "Invalid command" 1
|
||||||
|
;;
|
||||||
|
esac
|
||||||
96
buildhosts.1
Normal file
96
buildhosts.1
Normal file
|
|
@ -0,0 +1,96 @@
|
||||||
|
.if !\n(.g \{\
|
||||||
|
. if !\w|\*(lq| \{\
|
||||||
|
. ds lq ``
|
||||||
|
. if \w'\(lq' .ds lq "\(lq
|
||||||
|
. \}
|
||||||
|
. if !\w|\*(rq| \{\
|
||||||
|
. ds rq ''
|
||||||
|
. if \w'\(rq' .ds rq "\(rq
|
||||||
|
. \}
|
||||||
|
.\}
|
||||||
|
.ie t .ds Tx \s-1T\v'.4n'\h'-.1667'E\v'-.4n'\h'-.125'X\s0
|
||||||
|
. el .ds Tx TeX
|
||||||
|
.de Id
|
||||||
|
. ds Yr \\$4
|
||||||
|
. substring Yr 0 3
|
||||||
|
. ds Mn \\$4
|
||||||
|
. substring Mn 5 6
|
||||||
|
. ds Dy \\$4
|
||||||
|
. substring Dy 8 9
|
||||||
|
. \" ISO 8601 date, complete format, extended representation
|
||||||
|
. ds Dt \\*(Yr-\\*(Mn-\\*(Dy
|
||||||
|
..
|
||||||
|
.TH BUILDHOSTS 1 \*(Dt "buildhosts (git)" "User Commands"
|
||||||
|
.hy 0
|
||||||
|
.
|
||||||
|
.SH "NAME"
|
||||||
|
.B buildhosts
|
||||||
|
\- build and maintain \fB/etc/hosts\fR while including lists imported from local and remote hosts list sources\.
|
||||||
|
.
|
||||||
|
.SH "SYNOPSIS"
|
||||||
|
.
|
||||||
|
.B buildhosts
|
||||||
|
.RI [COMMAND]
|
||||||
|
.
|
||||||
|
.SH "COMMANDS"
|
||||||
|
.
|
||||||
|
.TP
|
||||||
|
\fBset\fR: generate \fB/etc/hosts\fR using \fB/etc/hosts\.core\fR and the configured sources
|
||||||
|
.TP
|
||||||
|
.TP
|
||||||
|
\fBunset\fR: remove lists imported from hosts list sources and restore \fB/etc/hosts\fR
|
||||||
|
.TP
|
||||||
|
.TP
|
||||||
|
\fBhelp\fR: display the help
|
||||||
|
.
|
||||||
|
.SH "INSTRUCTIONS"
|
||||||
|
\fBNote:\fR All instructions should be performed as the \fBroot\fR user, or using the \fBsudo\fR command to run commands with \fBroot\fR permissions\.
|
||||||
|
.
|
||||||
|
.SS "Enable Remote Sources"
|
||||||
|
.TP
|
||||||
|
.IP "1."
|
||||||
|
The first time you run the \fBset\fR command, \fB/etc/hosts\fR will be moved to \fB/etc/hosts\.core\fR, and the file \fB/etc/hosts\.sources\fR will be created using the default sources list\. The \fB/etc/hosts\fR file will then be generated by combining \fB/etc/hosts\.core\fR and the resulting contents of the downloaded sources in \fB/etc/hosts\.sources\fR\.
|
||||||
|
.TP
|
||||||
|
.TP
|
||||||
|
.BR "2."
|
||||||
|
You can now open \fB/etc/hosts\.sources\fR and remove or comment out (by adding \fB#\fR in front) any sources you don\'t wish to use, as well as add new ones\. Sources can remote (ie: \fBhttp://adaway\.org/hosts\.txt\fR) as well as local (ie: \fBfile:///etc/hosts\.d/mylist\.txt\fR)\.
|
||||||
|
.TP
|
||||||
|
.TP
|
||||||
|
.BR "3."
|
||||||
|
If you want to make any changes to the contents of what used to be \fB/etc/hosts\fR, you should now make them to \fB/etc/hosts\.core\fR, and you\'ll need to rerun the \fBset\fR command to have them applied\.
|
||||||
|
.TP
|
||||||
|
.TP
|
||||||
|
.BR "4."
|
||||||
|
Once you\'re done customizing your configuration, run the \fBset\fR command again and the \fB/etc/hosts\fR file will be regenerated using the current list of sources and your up\-to\-date \fB/etc/hosts\.core\fR file\.
|
||||||
|
.SS "Disable Remote Sources"
|
||||||
|
.TP
|
||||||
|
.BR "1."
|
||||||
|
To disable the configured hosts lists, run the \fBunset\fR command and \fB/etc/hosts\.core\fR will be moved back to \fB/etc/hosts\fR\.
|
||||||
|
.TP
|
||||||
|
.TP
|
||||||
|
.BR "2."
|
||||||
|
The \fB/etc/hosts\.sources\fR file will continue to exist until it\'s manually deleted, and it will be used again the next time remote sources are enabled\.
|
||||||
|
.SS "Notes on /etc/hosts\.sources"
|
||||||
|
.TP
|
||||||
|
On each line of \fB/etc/hosts\.sources\fR, after \fB#\fR is commented/skipped\.
|
||||||
|
.TP
|
||||||
|
.TP
|
||||||
|
Colour output can be disabled by setting the variable \fBNOCOL=1\fR\.
|
||||||
|
.TP
|
||||||
|
.TP
|
||||||
|
The \fB$HOSTS_SYSTEM\fR variable can be set to an alternative location to configure a different file to be used for \fB/etc/hosts\fR\.
|
||||||
|
.TP
|
||||||
|
.TP
|
||||||
|
Similarly, the \fB$HOSTS_CORE\fR and \fB$HOSTS_SOURCES\fR variables (which default to \fB$HOSTS_SYSTEM\.core\fR and \fB$HOSTS_SYSTEM\.sources\fR and will automatically change when \fB$HOSTS_SYSTEM\fR is changed), can be set to alternative locations to configure the use of different files\.
|
||||||
|
.
|
||||||
|
.SH "CREDITS"
|
||||||
|
Written by Kevin MacMartin:
|
||||||
|
.
|
||||||
|
.IP "\(bu" 4
|
||||||
|
GitHub Projects \fIhttps://github\.com/prurigro\fR
|
||||||
|
.
|
||||||
|
.IP "\(bu" 4
|
||||||
|
Arch Linux AUR Packages \fIhttps://aur\.archlinux\.org/packages/?SeB=m&K=prurigro\fR
|
||||||
|
.
|
||||||
|
.SH "LICENSE"
|
||||||
|
Released under the MIT license \fIhttp://opensource\.org/licenses/MIT\fR\.
|
||||||
Loading…
Reference in a new issue