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qemush : suppression, maintenant hébergé dans le repo ahurac/qemush

This commit is contained in:
Hippolyte Chauvin 2023-12-05 22:22:21 +01:00
parent bf4dd08139
commit f5a42ddb1e
8 changed files with 0 additions and 282 deletions

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@ -1,124 +0,0 @@
#!/bin/bash
exec_as() {
local user
user="$1"
shift
if [ "$(whoami)" != "$user" ]; then
exec sudo -u "$user" "$0" "$@"
else
cd || exit
fi
}
exec_as qemu "$@"
bin=bin
images=images
if [ -t 1 ]; then
cat=src-hilite-lesspipe.sh
else
cat='cat'
fi
PATH="./${bin}:${PATH}"
EDITOR="${EDITOR:-nvim}"
alias ls='ls --color=auto'
alias exec='exec '
shopt -s expand_aliases
umask 027
perror() {
>&2 printf '\033[1;31mERROR:\033[0m \033[1m%s\033[0m\n' "$*"
}
public_help() {
local name
name="$(basename "$0")"
exec cat << EOF
${name}: usage:
${name} active - (default behaviour) list active VMs
${name} start <VM name> - start a VM
${name} watch <VM name> - attach VM screen session
${name} ls - list available VMs
${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
${name} diskrm <disk name> - delete disk image
${name} shell - start a shell as user qemu
${name} help - show this help
EOF
}
error_usage() {
perror "Invalid usage"
>&2 public_help
return 1
}
public_start() {
local vm_name="$1"
shift
exec screen -S "$vm_name" "$vm_name" "$@"
}
public_watch() {
exec screen -dr "$1"
}
public_active() {
exec screen -ls
}
public_ls() {
echo "Available machines:"
exec ls "$bin"
}
diskpath() {
printf "%s.qcow2" "${images}/${1}"
}
public_diskadd() {
exec qemu-img create -f qcow2 "$(diskpath "$1")" "$2"
}
public_diskrm() {
exec rm -vi -- "$(diskpath "$1")"
}
public_diskls() {
echo "Available disks:"
exec ls "$images"
}
public_edit() {
local file="${bin}/${1}"
"$EDITOR" "$file"
exec chmod u+x "$file"
}
public_rm() {
exec rm -vi -- "${bin}/${1}"
}
public_shell() {
exec bash -i
}
public_cat() {
exec "$cat" "${bin}/${1}"
}
function="$1"
shift
if [ -z "$function" ]; then
public_active
elif declare -F | cut -d \ -f 3- | grep '^public_' | sed 's/^public_//' | grep -q "^${function}$"; then
"public_${function}" "$@"
else
error_usage
fi

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#!/bin/sh -x
qemu-system-x86_64 \
-enable-kvm \
-M q35 \
-cpu host -smp "$(("$(nproc)" / 2))" \
-m "$(("$(free | awk '($1 == "Mem:") { print $2 }')" / 2))K" \
-net nic \
"$@"

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@ -1,8 +0,0 @@
#!/bin/sh -x
exec linux \
-vga qxl \
-device virtio-serial \
-chardev spicevmc,id=vdagent,debug=0,name=vdagent \
-device virtserialport,chardev=vdagent,name=com.redhat.spice.0 \
-spice port="$(first-free-port 5900)",addr=127.0.0.1,disable-ticketing=on \
"$@"

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#!/bin/sh -x
exec qemu-system-x86_64 \
-enable-kvm \
-M q35 \
-cpu host -smp "$(("$(nproc)" / 2))" \
-m "$(("$(free | grep '^Mem:\s' | awk '{ print $NF }')" / 2))K" \
-device e1000,netdev=net0 \
-device nec-usb-xhci,id=xhci \
-device ich9-intel-hda -device hda-duplex \
"$@"

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#!/bin/sh -x
exec redox \
-vga qxl -spice port="$(first-free-port 5900)",addr=127.0.0.1,disable-ticketing=on \
"$@"

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@ -1,9 +0,0 @@
#!/bin/sh -x
qemu-system-x86_64 \
-enable-kvm \
-cpu host -smp "$(("$(nproc)" / 2))" \
-m "$(("$(free | grep '^Mem: ' | awk '{ print $NF }')" / 2))K" \
-net nic \
-device virtio-serial \
-usbdevice tablet \
"$@"

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

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#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#include <sysexits.h>
#include <string.h>
#define MIN_TCP_PORT 1
#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 inline unsigned char is_valid_tcp_port(const unsigned short tcp_port) {
return tcp_port >= MIN_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;
}
}