From 206f555b652743484bcc341b44d2934cf220e20c Mon Sep 17 00:00:00 2001
From: mawalu <web@mawalabs.de>
Date: Sun, 16 May 2021 20:35:01 +0200
Subject: [PATCH] Initial commit

---
 .gitignore |   1 +
 main.nim   | 101 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 102 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 main.nim

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..ba2906d
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+main
diff --git a/main.nim b/main.nim
new file mode 100644
index 0000000..7e33363
--- /dev/null
+++ b/main.nim
@@ -0,0 +1,101 @@
+import strformat
+import sequtils
+import posix
+import os
+
+type BwrapCall = object
+  args: seq[string]
+
+proc addArg(call: var BwrapCall, args: varargs[string]) =
+  for arg in args:
+    call.args.add(arg)
+
+proc addMount(call: var BwrapCall, mType: string, path: string) =
+  addArg(call, mType, path, path)
+
+proc exec(call: var BwrapCall) =
+  discard execv("/usr/bin/bwrap", allocCStringArray(@["bwrap"].concat(call.args)))
+
+proc homePath(p: string): string =
+  joinPath(getHomeDir(), p)
+
+let mode = splitPath(getAppFilename()).tail
+let args = commandLineParams()
+let argc = paramCount()
+
+if argc == 0:
+  echo &"Usage: {mode} <sandbox> [command]"
+  quit(1)
+
+let name = args[0]
+var command = ""
+
+if argc > 1:
+  command = args[1]
+else:
+  command = getEnv("SHELL", "/bin/sh")
+
+let sandboxPath = homePath(joinPath("sandboxes", name))
+let sandboxFiles = joinPath(sandboxPath, "files")
+let sandboxInfo = joinPath(sandboxPath, "info")
+
+createDir(sandboxFiles)
+
+var bwrap = BwrapCall()
+
+for bMount in ["/sys"]:
+  bwrap.addMount("--bind", bmount)
+
+for roMount in ["/etc", "/var", "/usr", "/opt"]:
+  bwrap.addMount("--ro-bind", roMount)
+
+bwrap.addMount("--dev-bind", "/dev")
+bwrap.addArg("--bind", sandboxFiles, getHomeDir())
+bwrap.addArg("--dir", "/tmp")
+bwrap.addArg("--symlink", "usr/lib", "/lib")
+bwrap.addArg("--symlink", "usr/lib64", "/lib64")
+bwrap.addArg("--symlink", "usr/bin", "/bin")
+bwrap.addArg("--symlink", "usr/sbin", "/sbin")
+bwrap.addArg("--proc", "/proc")
+bwrap.addArg("--unshare-all")
+bwrap.addArg("--share-net")
+bwrap.addArg("--die-with-parent")
+bwrap.addArg("--hostname", name)
+bwrap.addArg("--chdir", getHomeDir())
+bwrap.addArg(command)
+
+bwrap.exec()
+
+#[
+(exec bwrap --bind $sandbox_files $HOME \
+      ${cli_mode:+--bind $(pwd) $(pwd)} \
+      ${cli_mode:+--bind $SSH_AUTH_SOCK $SSH_AUTH_SOCK} \
+      ${gui_mode:+--bind /run/user/$(id -u)/pulse /run/user/$(id -u)/pulse} \
+      ${gui_mode:+--bind /run/user/$(id -u)/wayland-0 /run/user/$(id -u)/wayland-0} \
+      --bind /sys /sys \
+      --ro-bind /etc /etc \
+      --ro-bind /var /var \
+      --ro-bind /usr /usr \
+      --ro-bind /opt /opt \
+      --ro-bind $HOME/.zshrc $HOME/.zshrc \
+      --ro-bind $HOME/.zsh $HOME/.zsh \
+      --ro-bind $HOME/.oh-my-zsh $HOME/.oh-my-zsh \
+      --ro-bind $HOME/.ssh/known_hosts $HOME/.ssh/known_hosts \
+      --dev-bind /dev /dev \
+      --dir /tmp \
+      --dir $HOME/.ssh \
+      --symlink usr/lib /lib \
+      --symlink usr/lib64 /lib64 \
+      --symlink usr/bin /bin \
+      --symlink usr/sbin /sbin \
+      --proc /proc \
+      --unshare-all \
+      --share-net \
+      --die-with-parent \
+      --setenv XDG_RUNTIME_DIR "/run/user/$(id -u)" \
+      --hostname "$name" \
+      --chdir "$run_chdir" \
+      --info-fd 11 \
+      "$run_command") \
+      11> "$sandbox_info"
+]#
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