Message d'aide de qemush : mise à jour de la liste des fonctions

bin/deezer

@@ -1,5 +0,0 @@
-#!/bin/sh
-exec xargs /usr/bin/deezer \
-    "$@" \
-    < ~/.config/electron13-flags.conf
-

bin/freetube

@@ -1 +0,0 @@
-waylectron

bin/heroic

@@ -1 +0,0 @@
-waylectron

bin/instvnc

@@ -1,15 +0,0 @@
-#!/bin/sh -e
-
-display="$(grep "$LOGNAME" /etc/tigervnc/vncserver.users | head -n 1 | awk -F '=' '{ print $1 }')"
-echo "Using display: $display"
-test -n "$display"
-
-set -x
-cd
-exec \
-    screen \
-    -d \
-    -m \
-        vncserver \
-        "$display"
-

bin/iwqr

@@ -0,0 +1,14 @@
+#!/bin/sh -e
+
+if [ "$(whoami)" != root ]; then
+    exec sudo "$0" "$@"
+fi
+
+cd /var/lib/iwd
+
+field='Connected network'
+ssid=$(iwctl station wlan show | grep '^\s*'"${field}"'\s' | xargs | sed "s/^${field} //")
+unset field
+passphrase=$(awk -F = '($1 == "'"${1}"'") { print $2 }' "${ssid}.psk")
+
+qrencode -s 1 -l H -o - "WIFI:T:WPA;S:${ssid};P:${passphrase};;" | catimg -H 0 -

bin/makeprio

@@ -1,8 +0,0 @@
-#!/bin/sh -e
-
-pid="$(pidof "$1")"
-shift
-prio="${1:--22}"
-
-sudo renice "$prio" "$pid"
-

bin/mcserv

@@ -1,21 +1,24 @@
 #!/bin/bash
 
-exec_user() {
+exec_as() {
     local user="$1"
     shift
-    if [ "$USER" != "$user" ]; then
+    if [ "$(whoami)" != "$user" ]; then
         exec sudo -u "$user" "$0" "$@"
     else
-        return 0
+        cd
     fi
 }
 
-exec_user minecraft "$@"
-
-cd ~/bin || exit
+exec_as minecraft "$@" || exit
+bin=bin
+PATH="${bin}:${PATH}"
+EDITOR="${EDITOR:-nvim}"
+alias ls='ls --color=auto'
+shopt -s expand_aliases
 
 print_error() {
-    >&2 printf '\033[31;1m%s\033[0m \033[1m%s\033[0m\n' ERROR: "$*"
+    >&2 printf '\033[31;1mERROR:\033[0m \033[1m%s\033[0m\n' "$*"
 }
 
 public_usage() {
@@ -23,8 +26,8 @@ public_usage() {
     name="$(basename "$0")"
     cat << EOF
 ${name}: utilisation
-    ${name} start|status|stop|watch|restart NOM_SERVEUR
-    ${name} list|active|usage
+  ${name} start|status|stop|watch|restart|edit <nom serveur>
+  ${name} list|active|usage|shell
 EOF
 }
 
@@ -36,8 +39,8 @@ error_usage() {
 
 public_start() {
     if [ -n "$1" ]; then
-        screen -d -m -S "$1" \
-            "./${1}"
+        exec screen -S "$1" \
+            "$1"
     else
         error_usage
     fi
@@ -58,23 +61,23 @@ public_status() {
 
 public_stop() {
     if [ -n "$1" ]; then
-        screen -S "$1" -X stuff '^E^Ustop^M'
+        exec screen -S "$1" -X stuff '^E^Ustop^M'
     else
         error_usage
     fi
 }
 
 public_watch() {
-    screen -dr "$1"
+    exec screen -dr "$1"
 }
 
 public_active() {
-    screen -ls
+    exec screen -ls
 }
 
 public_list() {
     echo "Serveurs disponibles :"
-    ls --color=auto
+    exec ls "$bin"
 }
 
 public_restart() {
@@ -84,17 +87,21 @@ public_restart() {
     set +e
 }
 
+public_edit() {
+    exec "$EDITOR" "${bin}/${1}"
+}
+
+public_shell() {
+    exec bash -i
+}
+
 verb="$1"
 shift
-case "$verb" in
-    start|status|stop|watch|active|list|usage|restart)
-        "public_${verb}" "$@"
-        ;;
-    "")
-        public_active
-        ;;
-    *)
-        error_usage
-        ;;
-esac
 
+if [ -z "$verb" ]; then
+    public_active
+elif declare -F | cut -d \  -f 3 | grep '^public_' | sed 's/^public_//' | grep -q "^${verb}$"; then
+    "public_${verb}" "$@"
+else
+    error_usage
+fi

bin/miam

@@ -1,53 +0,0 @@
-#!/bin/bash
-
-# Functions
-# Throw
-function throw {
-    >&2 echo "$1"
-    exit "$2"
-}
-
-# Throw a value
-function throw-value {
-    throw "Invalid value for \"$1\": \"$2\"" "$3"
-}
-
-# Variables
-selection_mode="$1"
-saving_mode="$2"
-screenshot_d="/tmp"
-_command=()
-
-# Command building
-_command+=("maim")
-case "$selection_mode" in
-    "full")
-        :
-        ;;
-    "area")
-        _command+=("-s")
-        ;;
-    *)
-        throw-value "selection mode" "$selection_mode" 1
-        ;;
-esac
-case "$saving_mode" in
-    "clip")
-        _command+=("|")
-        _command+=("xclip" "-selection" "clipboard" "-t" "image/png")
-        ;;
-    "file")
-        _command+=(">" "${screenshot_d}/$(printf '%s-screenshot-%s.png' "$LOGNAME" "$(date +'%Y_%m_%d_%s')")")
-        ;;
-    *)
-        throw-value "saving mode" "$saving_mode" 2
-        ;;
-esac
-
-# Debug
-#echo "${_command[@]}"
-#exit 0
-
-# Execution
-"${_command[@]}"
-

bin/qemush

@@ -41,7 +41,7 @@ ${name}: usage:
   ${name} start <VM name>             - start a VM
   ${name} watch <VM name>             - attach VM screen session
   ${name} ls                          - list available VMs
-  ${name} add <VM name> <template>    - add launch script based on template
+  ${name} edit <VM name>              - edit VM launching script
   ${name} rm <VM name>                - delete launch script
   ${name} diskls                      - list available disk images
   ${name} diskadd <disk name> <size>  - create a disk image

bin/qrconn

@@ -1,17 +0,0 @@
-#!/bin/sh -e
-
-if [ "$(whoami)" != root ]; then
-    exec sudo "$0" "$@"
-fi
-
-cd "/var/lib/connman/$(connmanctl services | head -n 1 | awk '{ print $NF }')"
-
-get_var() {
-    awk -F = '($1 == "'"${1}"'") { print $2 }' settings
-}
-
-ssid="$(get_var Name)"
-psk="$(get_var Passphrase)"
-
-qrencode -s 1 -l H -o - "WIFI:T:WPA;S:${ssid};P:${psk};;" | catimg -H 0 -
-

qemu/bin/linux-spice

@@ -4,5 +4,5 @@ exec linux \
 	-device virtio-serial \
 	-chardev spicevmc,id=vdagent,debug=0,name=vdagent \
 	-device virtserialport,chardev=vdagent,name=com.redhat.spice.0 \
-	-spice port=5900,addr=127.0.0.1,disable-ticketing=on \
+	-spice port="$(first-free-port 5900)",addr=127.0.0.1,disable-ticketing=on \
 	"$@"

qemu/bin/windows-spice

@@ -1,7 +1,7 @@
 #!/bin/sh -x
 exec windows \
 	-vga qxl \
-	-spice port=5900,addr=127.0.0.1,disable-ticketing=on \
+	-spice port="$(first-free-port 5900)",addr=127.0.0.1,disable-ticketing=on \
 	-chardev spicevmc,id=vdagent,name=vdagent \
 	-device virtserialport,chardev=vdagent,name=com.redhat.spice.0 \
 	"$@"

src/first-free-port.c

@@ -0,0 +1,113 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <sysexits.h>
+#include <string.h>
+
+#define MIN_TCP_PORT 1
+#define MAX_TCP_PORT 65534
+#define TCP_TABLE "/proc/net/tcp"
+#define TCP_TABLE_LINE_LENGTH 151
+#define LOCALHOST_HEX "0100007F"
+#define WILDCARD_HEX "00000000"
+#define LISTENING_HEX "0A"
+#define PORTS_BLOCKS_TO_ALLOW 4
+
+/**
+ * Get all the listening TCP ports
+ */
+static unsigned short *get_listening_ports(unsigned short *listening_ports, FILE *tcp_table_fptr) {
+    char line[TCP_TABLE_LINE_LENGTH];
+    char delimiter[] = " ";
+    unsigned short len = 0;
+    char *address;
+    char *state;
+    char *field;
+    size_t allowed_for_ports = PORTS_BLOCKS_TO_ALLOW;
+
+    // Skip first line (header)
+    fgets(line, sizeof(line), tcp_table_fptr);
+
+    // Tokenize lines one by one
+    while (fgets(line, sizeof(line), tcp_table_fptr) != NULL) {
+        strtok(line, delimiter);
+
+        address = strtok(NULL, delimiter);
+        strtok(NULL, delimiter);
+        state = strtok(NULL, delimiter);
+        field = strtok(NULL, delimiter);
+        
+        while (field != NULL) {
+            field = strtok(NULL, delimiter);
+        }
+
+        if ((!strncmp(address, LOCALHOST_HEX, 8) || !strncmp(address, WILDCARD_HEX, 8)) && !strncmp(state, LISTENING_HEX, 2)) {
+            if (len == allowed_for_ports) {
+                allowed_for_ports = allowed_for_ports + PORTS_BLOCKS_TO_ALLOW;
+                listening_ports = realloc(listening_ports, allowed_for_ports * sizeof(unsigned short));
+            }
+            listening_ports[len] = strtol(address + strlen(address) - 4, NULL, 16);
+            len++;
+        }
+    }
+
+    if (len == allowed_for_ports) {
+        allowed_for_ports = allowed_for_ports + PORTS_BLOCKS_TO_ALLOW;
+        listening_ports = realloc(listening_ports, allowed_for_ports * sizeof(unsigned short));
+    }
+    listening_ports[len] = 0;
+
+    return listening_ports;
+}
+
+static unsigned char is_port_available(const unsigned short port, const unsigned short *listening_ports) {
+    unsigned short i = 0;
+    while (listening_ports[i] != 0 && listening_ports[i] != port) {
+        i++;
+    }
+    return listening_ports[i] == 0;
+}
+
+static unsigned char is_valid_tcp_port(unsigned short tcp_port) {
+    return tcp_port >= MIN_TCP_PORT && tcp_port <= MAX_TCP_PORT;
+}
+
+int main(int argc, char *argv[]) {
+    unsigned short current_port;
+
+    if (argc >= 2) {
+        current_port = atoi(argv[1]);
+    } else {
+        current_port = 0;
+    }
+
+    if (!is_valid_tcp_port(current_port)) {
+        fprintf(stderr, "Provide a valid TCP port number as first argument.\n");
+        return EX_USAGE;
+    }
+
+    // Open TCP table
+    FILE *tcp_table_fptr = fopen(TCP_TABLE, "r");
+    if (tcp_table_fptr == NULL) {
+        fprintf(stderr, "Error opening the TCP table.\n");
+        return EX_OSFILE;
+    }
+
+    unsigned short *listening_ports = malloc(PORTS_BLOCKS_TO_ALLOW * sizeof(unsigned short));
+    listening_ports = get_listening_ports(listening_ports, tcp_table_fptr);
+
+    // Check if the current port is available, add
+    while (!is_port_available(current_port, listening_ports)) {
+        current_port++;
+    }
+
+    free(listening_ports);
+
+    if (is_valid_tcp_port(current_port)) {
+        printf("%d\n", current_port);
+        return EXIT_SUCCESS;
+    } else {
+        fprintf(stderr, "No more ports available. How did you fuck up that bad ???\n");
+        return EX_TEMPFAIL;
+    }
+}