init

2022-07-27 08:31:34 +03:00
commit bb07073c6a
21 changed files with 2351 additions and 0 deletions
--- a/src/http
+++ b/src/http
@ -0,0 +1,110 @@
+#!/usr/bin/env bash
+
+http_version=0.5.1 # this script version.
+
+set -o monitor   # for job control.
+set -o errexit   # exit if error occurs.
+
+# Defaults
+HOST=0.0.0.0
+PORT=8000
+DIR=$PWD
+
+# Check Python 3
+if ! hash python3 2>/dev/null; then
+    echo -e "$0: Python 3 executable not found." >&2
+    exit 1
+fi
+
+http_print_help() {
+    cat <<-EOF
+Run Python 3 builtin HTTP Server.
+
+Usage: http [-v|--version] [-h|--help] [-c|--cgi] [-f|--firefox]
+            [<host>[:<port>]] [<port>] [<dir>]
+
+Options:
+    -c, --cgi       run as CGI Server.
+    -f, --firefox   open URL in Firefox.
+    -h, --help      print this help message and exit.
+    -v, --version   print version and exit.
+
+Arguments:
+    <host>          host to bind. Default: 0.0.0.0
+    <port>          port to bind. Default: 8000
+    <dir>           directory to serve. Default: current directory.
+EOF
+    exit 0
+}
+
+while (( "$#" )); do
+    case "$1" in
+        -c|--cgi)
+            CGI='--cgi';;
+        -f|--firefox)
+            FOX=1;;
+        -h|--help)
+            http_print_help;;
+        -v|--version)
+            echo "http v$http_version"; exit 0;;
+        -*|--*)
+            echo -e "$0: Bad option: $1" >&2
+            exit 1
+            ;;
+        *)
+            if [ -d "$1" ]
+            then
+                # If direcory exists set it as root DIR.
+                DIR="$1"
+            elif [[ "$1" =~ ^[0-9]+$ ]]
+            then
+                # If value is integer set it as PORT.
+                PORT="$1"
+            elif [[ "$1" =~ \
+                ^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$ ]]
+            then
+                # Value like IPv4 address. Not necessary.
+                HOST="$1"
+            elif [[ "$1" == 'localhost' ]]
+            then
+                # Nuff said.
+                HOST="$1"
+            elif [ "$(grep -o : <<<"$1")" ]
+            then
+                # If value like 'localhost:4000'
+                HOST="$(echo "$1" | cut -d ":" -f 1)"
+                PORT="$(echo "$1" | cut -d ":" -f 2)"
+            else
+                echo -e "$0: Bad option: $1$" >&2
+                exit 1
+            fi
+            ;;
+    esac
+    shift
+done
+
+# Check available port and retry 3 times.
+retries=1
+while [ "$(ss -tanp | grep -o "$PORT")" ]; do
+    if [[ "$retries" == 4 ]]
+    then
+        echo -e "Max number of retries reached! Exiting." >&2
+        exit 1
+    else
+        :
+    fi
+
+    # Increase port if is already in use.
+    PORT_USED="$PORT"
+    let PORT++
+    echo -e "Port $PORT_USED is already in use!
+        Switching to: $PORT" | sed 's/^ *//g' >&2
+
+    let retries++
+done
+
+# Run Python http.server.
+echo -e "Serve: $DIR\tPress ^C to stop serving."
+python3 -m http.server $CGI --bind $HOST $PORT --directory $DIR &
+[[ "$FOX" == 1 ]] && firefox http://$HOST:$PORT/
+fg