rpm-ostree/src/app/rpmostree-builtin-status.c

/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*-
 *
 * Copyright (C) 2014 Anne LoVerso <anne.loverso@students.olin.edu>
 * Copyright (C) 2016 Red Hat, Inc.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published
 * by the Free Software Foundation; either version 2 of the licence or (at
 * your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General
 * Public License along with this library; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
 * Boston, MA 02111-1307, USA.
 */

#include "config.h"

#include <string.h>
#include <stdio.h>
#include <glib-unix.h>
#include <gio/gunixoutputstream.h>
#include <json-glib/json-glib.h>

#include "rpmostree-builtins.h"
#include "rpmostree-dbus-helpers.h"
#include "rpmostree-util.h"
#include "rpmostree-rpm-util.h"
#include "libsd-locale-util.h"

#include <libglnx.h>

static gboolean opt_pretty;
static gboolean opt_verbose;
static gboolean opt_json;
static const char *opt_jsonpath;

static GOptionEntry option_entries[] = {
  { "pretty", 'p', G_OPTION_FLAG_HIDDEN, G_OPTION_ARG_NONE, &opt_pretty, "This option is deprecated and no longer has any effect", NULL },
  { "verbose", 'v', 0, G_OPTION_ARG_NONE, &opt_verbose, "Print additional fields (e.g. StateRoot)", NULL },
  { "json", 0, 0, G_OPTION_ARG_NONE, &opt_json, "Output JSON", NULL },
  { "jsonpath", 'J', 0, G_OPTION_ARG_STRING, &opt_jsonpath, "Filter JSONPath expression", "EXPRESSION" },
  { NULL }
};

static void
printpad (char c, guint n)
{
  for (guint i = 0; i < n; i++)
    putc (c, stdout);
}

static void
print_kv_no_newline (const char *key,
                     guint       maxkeylen,
                     const char *value)
{
  const guint n_key = strlen (key);
  int pad = maxkeylen - n_key;
  g_assert (pad >= 0);
  /* +2 for initial leading spaces */
  printpad (' ', pad + 2);
  printf ("%s%s %s", key, n_key ? ":" : " ", value);
}

/* return space available for printing value side of kv */
static guint
get_textarea_width (guint maxkeylen)
{
  const guint columns = glnx_console_columns ();
  /* +2 for initial leading spaces */
  const guint right_side_width = maxkeylen + 2 + strlen (": ");
  if (right_side_width >= columns)
    return G_MAXUINT; /* can't even print keys without wrapping, nothing pretty to do here */
  /* the sha is already 64 chars, so no point in trying to use less */
  return MAX(OSTREE_SHA256_STRING_LEN, columns - right_side_width);
}

static void
print_kv (const char *key,
          guint       maxkeylen,
          const char *value)
{
  print_kv_no_newline (key, maxkeylen, value);
  putc ('\n', stdout);
}

static GVariant *
get_active_txn (RPMOSTreeSysroot *sysroot_proxy)
{
  GVariant* txn = rpmostree_sysroot_get_active_transaction (sysroot_proxy);
  const char *a, *b, *c;
  if (txn)
    {
      g_variant_get (txn, "(&s&s&s)", &a, &b, &c);
      if (*a)
        return txn;
    }
  return NULL;
}

static void
print_packages (const char *k, guint max_key_len,
                const char *const* pkgs,
                const char *const* omit_pkgs)
{
  g_autoptr(GPtrArray) packages_sorted = g_ptr_array_new_with_free_func (g_free);
  static gsize regex_initialized;
  static GRegex *safe_chars_regex;
  if (g_once_init_enter (&regex_initialized))
    {
      safe_chars_regex = g_regex_new ("^[[:alnum:]-._]+$", 0, 0, NULL);
      g_assert (safe_chars_regex);
      g_once_init_leave (&regex_initialized, 1);
    }

  for (char **iter = (char**) pkgs; iter && *iter; iter++)
    {
      if (omit_pkgs != NULL && g_strv_contains (omit_pkgs, *iter))
        continue;

      /* don't quote if it just has common pkgname/shell-safe chars */
      if (g_regex_match (safe_chars_regex, *iter, 0, 0))
        g_ptr_array_add (packages_sorted, g_strdup (*iter));
      else
        g_ptr_array_add (packages_sorted, g_shell_quote (*iter));
    }

  const guint n_packages = packages_sorted->len;
  if (n_packages == 0)
    return;

  print_kv_no_newline (k, max_key_len, "");

  /* wrap pkglist output ourselves rather than letting the terminal cut us up */
  const guint area_width = get_textarea_width (max_key_len);
  guint current_width = 0;
  for (guint i = 0; i < n_packages; i++)
    {
      const char *pkg = packages_sorted->pdata[i];
      const guint pkg_width = strlen (pkg);

      /* first print */
      if (current_width == 0)
        {
          g_print ("%s", pkg);
          current_width += pkg_width;
        }
      else if ((current_width + pkg_width + 1) <= area_width) /* +1 for space separator */
        {
          g_print (" %s", pkg);
          current_width += (pkg_width + 1);
        }
      else
        {
          /* always print at least one per line, even if we overflow */
          putc ('\n', stdout);
          print_kv_no_newline ("", max_key_len, pkg);
          current_width = pkg_width;
        }
    }
  putc ('\n', stdout);
}

static const gchar**
lookup_array_and_canonicalize (GVariantDict *dict,
                               const char   *key)
{
  g_autofree const gchar **ret = NULL;

  if (g_variant_dict_lookup (dict, key, "^a&s", &ret))
    {
      /* Canonicalize length 0 strv to NULL */
      if (!*ret)
        g_clear_pointer (&ret, g_free);
    }

  return g_steal_pointer (&ret);
}

static void
gv_nevra_to_evr (GString  *buffer,
                 GVariant *gv_nevra)
{
  guint64 epoch;
  const char *version, *release;
  g_variant_get (gv_nevra, "(sst&s&ss)", NULL, NULL, &epoch, &version, &release, NULL);
  rpmostree_custom_nevra (buffer, NULL, epoch, version, release, NULL,
                          PKG_NEVRA_FLAGS_EPOCH_VERSION_RELEASE);
}

/* We will have an optimized path for the case where there are just
 * two deployments, this code will be the generic fallback.
 */
static gboolean
status_generic (RPMOSTreeSysroot *sysroot_proxy,
                RPMOSTreeOS *os_proxy,
                GVariant       *deployments,
                GCancellable   *cancellable,
                GError        **error)
{
  GVariantIter iter;
  gboolean first = TRUE;
  const int is_tty = isatty (1);
  const char *bold_prefix = is_tty ? "\x1b[1m" : "";
  const char *bold_suffix = is_tty ? "\x1b[0m" : "";
  const char *red_prefix = is_tty ? "\x1b[31m" : "";
  const char *red_suffix = is_tty ? "\x1b[22m" : "";

  /* First, gather global state */
  gboolean have_any_live_overlay = FALSE;
  g_variant_iter_init (&iter, deployments);
  while (TRUE)
    {
      g_autoptr(GVariant) child = g_variant_iter_next_value (&iter);

      if (!child)
        break;

      g_autoptr(GVariantDict) dict = g_variant_dict_new (child);

      const gchar *live_inprogress;
      if (!g_variant_dict_lookup (dict, "live-inprogress", "&s", &live_inprogress))
        live_inprogress = NULL;
      const gchar *live_replaced;
      if (!g_variant_dict_lookup (dict, "live-replaced", "&s", &live_replaced))
        live_replaced = NULL;
      const gboolean have_live_changes = live_inprogress || live_replaced;

      have_any_live_overlay = have_any_live_overlay || have_live_changes;
    }

  glnx_unref_object RPMOSTreeTransaction *txn_proxy = NULL;
  if (!rpmostree_transaction_connect_active (sysroot_proxy, NULL, &txn_proxy,
                                             cancellable, error))
    return FALSE;

  if (txn_proxy)
    {
      const char *title = rpmostree_transaction_get_title (txn_proxy);
      g_print ("State: transaction: %s\n", title);
    }
  else
    g_print ("State: idle\n");
  g_print ("Deployments:\n");

  g_variant_iter_init (&iter, deployments);

  while (TRUE)
    {
      g_autoptr(GVariant) child = g_variant_iter_next_value (&iter);
      g_autoptr(GVariantDict) dict = NULL;
      g_autoptr(GVariantDict) commit_meta_dict = NULL;
      g_autoptr(GVariantDict) layered_commit_meta_dict = NULL;
      gboolean is_locally_assembled = FALSE;
      g_autofree const gchar **origin_packages = NULL;
      g_autofree const gchar **origin_requested_packages = NULL;
      g_autofree const gchar **origin_requested_local_packages = NULL;
      g_autoptr(GVariant) origin_base_removals = NULL;
      g_autofree const gchar **origin_requested_base_removals = NULL;
      g_autoptr(GVariant) origin_base_local_replacements = NULL;
      g_autofree const gchar **origin_requested_base_local_replacements = NULL;
      const gchar *origin_refspec;
      const gchar *id;
      const gchar *os_name;
      const gchar *checksum;
      const gchar *version_string;
      const gchar *unlocked;
      const gchar *live_inprogress;
      const gchar *live_replaced;
      gboolean gpg_enabled;
      gboolean regenerate_initramfs;
      guint64 t = 0;
      int serial;
      gboolean is_booted;
      const gboolean was_first = first;
      /* Add the long keys here */
      const guint max_key_len = MAX (strlen ("InactiveBaseReplacements"),
                                     strlen ("InterruptedLiveCommit"));
      g_autoptr(GVariant) signatures = NULL;
      g_autofree char *timestamp_string = NULL;

      if (child == NULL)
        break;

      dict = g_variant_dict_new (child);

      /* osname should always be present. */
      g_assert (g_variant_dict_lookup (dict, "osname", "&s", &os_name));
      g_assert (g_variant_dict_lookup (dict, "id", "&s", &id));
      g_assert (g_variant_dict_lookup (dict, "serial", "i", &serial));
      g_assert (g_variant_dict_lookup (dict, "checksum", "&s", &checksum));

      if (g_variant_dict_lookup (dict, "origin", "&s", &origin_refspec))
        {
          origin_packages =
            lookup_array_and_canonicalize (dict, "packages");
          origin_requested_packages =
            lookup_array_and_canonicalize (dict, "requested-packages");
          origin_requested_local_packages =
            lookup_array_and_canonicalize (dict, "requested-local-packages");
          origin_base_removals =
            g_variant_dict_lookup_value (dict, "base-removals", G_VARIANT_TYPE ("av"));
          origin_requested_base_removals =
            lookup_array_and_canonicalize (dict, "requested-base-removals");
          origin_base_local_replacements =
            g_variant_dict_lookup_value (dict, "base-local-replacements",
                                         G_VARIANT_TYPE ("a(vv)"));
          origin_requested_base_local_replacements =
            lookup_array_and_canonicalize (dict, "requested-base-local-replacements");
        }
      else
        origin_refspec = NULL;
      if (!g_variant_dict_lookup (dict, "version", "&s", &version_string))
        version_string = NULL;
      if (!g_variant_dict_lookup (dict, "unlocked", "&s", &unlocked))
        unlocked = NULL;

      if (!g_variant_dict_lookup (dict, "regenerate-initramfs", "b", &regenerate_initramfs))
        regenerate_initramfs = FALSE;

      signatures = g_variant_dict_lookup_value (dict, "signatures",
                                                G_VARIANT_TYPE ("av"));

      if (first)
        first = FALSE;
      else
        g_print ("\n");

      if (!g_variant_dict_lookup (dict, "booted", "b", &is_booted))
        is_booted = FALSE;

      g_print ("%s ", is_booted ? libsd_special_glyph (BLACK_CIRCLE) : " ");

      if (origin_refspec)
        g_print ("ostree://%s", origin_refspec);
      else
        g_print ("%s", checksum);
      g_print ("\n");

      const char *base_checksum = NULL;
      g_variant_dict_lookup (dict, "base-checksum", "&s", &base_checksum);
      if (base_checksum != NULL)
        is_locally_assembled = TRUE;

      /* Load the commit metadata into a dict */
      { g_autoptr(GVariant) commit_meta_v = NULL;
        g_assert (g_variant_dict_lookup (dict, "base-commit-meta", "@a{sv}", &commit_meta_v));
        commit_meta_dict = g_variant_dict_new (commit_meta_v);
      }
      if (is_locally_assembled)
        {
          g_autoptr(GVariant) layered_commit_meta_v = NULL;
          g_assert (g_variant_dict_lookup (dict, "layered-commit-meta", "@a{sv}", &layered_commit_meta_v));
          layered_commit_meta_dict = g_variant_dict_new (layered_commit_meta_v);
        }

      const gchar *source_title = NULL;
      g_variant_dict_lookup (commit_meta_dict, OSTREE_COMMIT_META_KEY_SOURCE_TITLE, "&s", &source_title);
      if (source_title)
        g_print ("  %s %s\n", libsd_special_glyph (TREE_RIGHT), source_title);

      if (is_locally_assembled)
        g_assert (g_variant_dict_lookup (dict, "base-timestamp", "t", &t));
      else
        g_assert (g_variant_dict_lookup (dict, "timestamp", "t", &t));
      { g_autoptr(GDateTime) timestamp = g_date_time_new_from_unix_utc (t);

        if (timestamp != NULL)
          timestamp_string = g_date_time_format (timestamp, "%Y-%m-%d %T");
        else
          timestamp_string = g_strdup_printf ("(invalid timestamp)");
      }

      if (version_string)
        {
          g_autofree char *version_time
            = g_strdup_printf ("%s%s%s (%s)", bold_prefix, version_string,
                               bold_suffix, timestamp_string);
          print_kv ("Version", max_key_len, version_time);
        }
      else
        {
          print_kv ("Timestamp", max_key_len, timestamp_string);
        }

      if (!g_variant_dict_lookup (dict, "live-inprogress", "&s", &live_inprogress))
        live_inprogress = NULL;
      if (!g_variant_dict_lookup (dict, "live-replaced", "&s", &live_replaced))
        live_replaced = NULL;
      const gboolean have_live_changes = live_inprogress || live_replaced;

      if (is_locally_assembled)
        {
          if (have_live_changes)
            print_kv ("BootedBaseCommit", max_key_len, base_checksum);
          else
            print_kv ("BaseCommit", max_key_len, base_checksum);
          if (opt_verbose || have_any_live_overlay)
            print_kv ("Commit", max_key_len, checksum);
        }
      else
        {
          if (have_live_changes)
            print_kv ("BootedCommit", max_key_len, checksum);
          if (!have_live_changes || opt_verbose)
            print_kv ("Commit", max_key_len, checksum);
        }

      if (live_inprogress)
        {
          if (is_booted)
            g_print ("%s%s", red_prefix, bold_prefix);
          print_kv ("InterruptedLiveCommit", max_key_len, live_inprogress);
          if (is_booted)
            g_print ("%s%s", bold_suffix, red_suffix);
        }
      if (live_replaced)
        {
          if (is_booted)
            g_print ("%s%s", red_prefix, bold_prefix);
          print_kv ("LiveCommit", max_key_len, live_replaced);
          if (is_booted)
            g_print ("%s%s", bold_suffix, red_suffix);
        }

      /* Show any difference between the baseref vs head, but only for the
         booted commit, and only if there isn't a pending deployment. Otherwise
         it's either unnecessary or too noisy.
      */
      if (is_booted && was_first)
        {
          const gchar *pending_checksum = NULL;
          const gchar *pending_version = NULL;

          if (g_variant_dict_lookup (dict, "pending-base-checksum", "&s", &pending_checksum))
            {
              print_kv (is_locally_assembled ? "PendingBaseCommit" : "PendingCommit",
                        max_key_len, pending_checksum);
              g_assert (g_variant_dict_lookup (dict, "pending-base-timestamp", "t", &t));
              g_variant_dict_lookup (dict, "pending-base-version", "&s", &pending_version);

              if (pending_version)
                {
                  g_autoptr(GDateTime) timestamp = g_date_time_new_from_unix_utc (t);
                  g_autofree char *version_time = NULL;

                  if (timestamp != NULL)
                    timestamp_string = g_date_time_format (timestamp, "%Y-%m-%d %T");
                  else
                    timestamp_string = g_strdup_printf ("(invalid timestamp)");

                  version_time = g_strdup_printf ("%s (%s)", pending_version, timestamp_string);
                  print_kv (is_locally_assembled ? "PendingBaseVersion" : "PendingVersion",
                            max_key_len, version_time);
                }
            }
        }

      /* This used to be OSName; see https://github.com/ostreedev/ostree/pull/794 */
      if (opt_verbose)
        print_kv ("StateRoot", max_key_len, os_name);

      if (!g_variant_dict_lookup (dict, "gpg-enabled", "b", &gpg_enabled))
        gpg_enabled = FALSE;

      if (gpg_enabled)
        {
          if (signatures)
            {
              const guint gpgpad = max_key_len+4;
              char gpgspaces[gpgpad+1];
              memset (gpgspaces, ' ', gpgpad);
              gpgspaces[gpgpad] = '\0';

              if (opt_verbose)
                {
                  const guint n_sigs = g_variant_n_children (signatures);
                  g_autofree char *gpgheader =
                    g_strdup_printf ("%u signature%s", n_sigs,
                                     n_sigs == 1 ? "" : "s");
                  print_kv ("GPGSignature", max_key_len, gpgheader);
                }
              else
                print_kv_no_newline ("GPGSignature", max_key_len, "");
              rpmostree_print_signatures (signatures, gpgspaces, opt_verbose);
            }
          else
            {
              print_kv ("GPGSignature", max_key_len, "(unsigned)");
            }
        }

      /* print base overrides before overlays */
      g_autoptr(GPtrArray) active_removals = g_ptr_array_new_with_free_func (g_free);
      if (origin_base_removals)
        {
          g_autoptr(GString) str = g_string_new ("");
          const guint n = g_variant_n_children (origin_base_removals);
          for (guint i = 0; i < n; i++)
            {
              g_autoptr(GVariant) gv_nevra;
              g_variant_get_child (origin_base_removals, i, "v", &gv_nevra);
              const char *name, *nevra;
              g_variant_get_child (gv_nevra, 0, "&s", &nevra);
              g_variant_get_child (gv_nevra, 1, "&s", &name);
              if (str->len)
                g_string_append (str, ", ");
              g_string_append (str, nevra);
              g_ptr_array_add (active_removals, g_strdup (name));
            }
          g_ptr_array_add (active_removals, NULL);
          if (str->len)
            print_kv ("RemovedBasePackages", max_key_len, str->str);
        }

      /* only print inactive base removal requests in verbose mode */
      if (origin_requested_base_removals && opt_verbose)
        print_packages ("InactiveBaseRemovals", max_key_len,
                        origin_requested_base_removals,
                        (const char *const*)active_removals->pdata);

      g_autoptr(GPtrArray) active_replacements = g_ptr_array_new_with_free_func (g_free);
      if (origin_base_local_replacements)
        {
          g_autoptr(GString) str = g_string_new ("");
          g_autoptr(GHashTable) grouped_diffs =
            g_hash_table_new_full (g_str_hash, g_str_equal, g_free,
                                   (GDestroyNotify)g_ptr_array_unref);

          const guint n = g_variant_n_children (origin_base_local_replacements);
          for (guint i = 0; i < n; i++)
            {
              g_autoptr(GVariant) gv_nevra_new;
              g_autoptr(GVariant) gv_nevra_old;
              g_variant_get_child (origin_base_local_replacements, i, "(vv)",
                                   &gv_nevra_new, &gv_nevra_old);
              const char *nevra_new, *name_new, *name_old;
              g_variant_get_child (gv_nevra_new, 0, "&s", &nevra_new);
              g_variant_get_child (gv_nevra_new, 1, "&s", &name_new);
              g_variant_get_child (gv_nevra_old, 1, "&s", &name_old);

              /* if pkgnames match, print a nicer version like treediff */
              if (g_str_equal (name_new, name_old))
                {
                  /* let's just use str as a scratchpad to avoid excessive mallocs; the str
                   * needs to be stretched anyway for the final output */
                  gsize original_size = str->len;
                  gv_nevra_to_evr (str, gv_nevra_old);
                  g_string_append (str, " -> ");
                  gv_nevra_to_evr (str, gv_nevra_new);
                  const char *diff = str->str + original_size;
                  GPtrArray *pkgs = g_hash_table_lookup (grouped_diffs, diff);
                  if (!pkgs)
                    {
                      pkgs = g_ptr_array_new_with_free_func (g_free);
                      g_hash_table_insert (grouped_diffs, g_strdup (diff), pkgs);
                    }
                  g_ptr_array_add (pkgs, g_strdup (name_new));
                  g_string_truncate (str, original_size);
                }
              else
                {
                  if (str->len)
                    g_string_append (str, ", ");

                  const char *nevra_old;
                  g_variant_get_child (gv_nevra_old, 0, "&s", &nevra_old);
                  g_string_append_printf (str, "%s -> %s", nevra_old, nevra_new);
                }
              g_ptr_array_add (active_replacements, g_strdup (nevra_new));
            }

          GLNX_HASH_TABLE_FOREACH_KV (grouped_diffs, const char*, diff, GPtrArray*, pkgs)
            {
              if (str->len)
                g_string_append (str, ", ");
              for (guint i = 0, n = pkgs->len; i < n; i++)
                {
                  const char *pkgname = g_ptr_array_index (pkgs, i);
                  if (i > 0)
                    g_string_append_c (str, ' ');
                  g_string_append (str, pkgname);
                }
              g_string_append_c (str, ' ');
              g_string_append (str, diff);
            }

          g_ptr_array_add (active_replacements, NULL);

          if (str->len)
            print_kv ("ReplacedBasePackages", max_key_len, str->str);
        }

      if (origin_requested_base_local_replacements && opt_verbose)
        print_packages ("InactiveBaseReplacements", max_key_len,
                        origin_requested_base_local_replacements,
                        (const char *const*)active_replacements->pdata);

      /* only print inactive layering requests in verbose mode */
      if (origin_requested_packages && opt_verbose)
        /* requested-packages - packages = inactive (i.e. dormant requests) */
        print_packages ("InactiveRequests", max_key_len,
                        origin_requested_packages, origin_packages);

      if (origin_packages)
        print_packages ("LayeredPackages", max_key_len,
                        origin_packages, NULL);

      if (origin_requested_local_packages)
        print_packages ("LocalPackages", max_key_len,
                        origin_requested_local_packages, NULL);

      if (regenerate_initramfs)
        {
          g_autoptr(GString) buf = g_string_new ("");
          g_autofree char **initramfs_args = NULL;

          g_variant_dict_lookup (dict, "initramfs-args", "^a&s", &initramfs_args);

          for (char **iter = initramfs_args; iter && *iter; iter++)
            {
              g_string_append (buf, *iter);
              g_string_append_c (buf, ' ');
            }
          if (buf->len == 0)
            g_string_append (buf, "regenerate");
          print_kv ("Initramfs", max_key_len, buf->str);
        }

      if (unlocked && g_strcmp0 (unlocked, "none") != 0)
        {
          g_print ("%s%s", red_prefix, bold_prefix);
          print_kv ("Unlocked", max_key_len, unlocked);
          g_print ("%s%s", bold_suffix, red_suffix);
        }
      const char *end_of_life_string = NULL;
      /* look for endoflife attribute in the deployment */
      g_variant_dict_lookup (dict, "endoflife", "&s", &end_of_life_string);

      if (end_of_life_string)
        {
          g_print ("%s%s", red_prefix, bold_prefix);
          print_kv ("EndOfLife", max_key_len, end_of_life_string);
          g_print ("%s%s", bold_suffix, red_suffix);
        }
    }

  return TRUE;
}

int
rpmostree_builtin_status (int             argc,
                          char          **argv,
                          RpmOstreeCommandInvocation *invocation,
                          GCancellable   *cancellable,
                          GError        **error)
{
  g_autoptr(GOptionContext) context = g_option_context_new ("");
  glnx_unref_object RPMOSTreeOS *os_proxy = NULL;
  glnx_unref_object RPMOSTreeSysroot *sysroot_proxy = NULL;
  g_autoptr(GVariant) deployments = NULL;
  _cleanup_peer_ GPid peer_pid = 0;

  if (!rpmostree_option_context_parse (context,
                                       option_entries,
                                       &argc, &argv,
                                       invocation,
                                       cancellable,
                                       NULL, NULL,
                                       &sysroot_proxy,
                                       &peer_pid,
                                       error))
    return EXIT_FAILURE;

  if (opt_json && opt_jsonpath)
    {
      g_set_error (error, G_IO_ERROR, G_IO_ERROR_INVALID_ARGUMENT,
                   "Cannot specify both --json and --jsonpath");
      return EXIT_FAILURE;
    }

  if (!rpmostree_load_os_proxy (sysroot_proxy, NULL,
                                cancellable, &os_proxy, error))
    return EXIT_FAILURE;

  deployments = rpmostree_sysroot_dup_deployments (sysroot_proxy);

  if (opt_json || opt_jsonpath)
    {
      glnx_unref_object JsonBuilder *builder = json_builder_new ();
      json_builder_begin_object (builder);

      json_builder_set_member_name (builder, "deployments");
      json_builder_add_value (builder, json_gvariant_serialize (deployments));
      json_builder_set_member_name (builder, "transaction");
      GVariant *txn = get_active_txn (sysroot_proxy);
      JsonNode *txn_node =
        txn ? json_gvariant_serialize (txn) : json_node_new (JSON_NODE_NULL);
      json_builder_add_value (builder, txn_node);
      json_builder_end_object (builder);

      JsonNode *json_root = json_builder_get_root (builder);
      glnx_unref_object JsonGenerator *generator = json_generator_new ();

      if (opt_json)
        json_generator_set_root (generator, json_root);
      else
        {
          JsonNode *result = json_path_query (opt_jsonpath, json_root, error);
          if (!result)
            {
              g_prefix_error (error, "While compiling jsonpath: ");
              return EXIT_FAILURE;
            }
          json_generator_set_root (generator, result);
          json_node_free (result);
        }
      json_node_free (json_root);

      /* NB: watch out for the misleading API docs */
      glnx_unref_object GOutputStream *stdout_gio = g_unix_output_stream_new (1, FALSE);
      if (json_generator_to_stream (generator, stdout_gio, NULL, error) <= 0
          || (error != NULL && *error != NULL))
        return EXIT_FAILURE;
    }
  else
    {
      if (!status_generic (sysroot_proxy, os_proxy, deployments,
                           cancellable, error))
        return EXIT_FAILURE;
    }

  return EXIT_SUCCESS;
}