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https://github.com/flatpak/flatpak.git
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db7a8bb598
flatpak-run is large enough to be getting unwieldy, so separate it out into various smaller modules. A side benefit of these is that they'll be easier to reuse in other projects, like Steam's pressure-vessel tool. Signed-off-by: Simon McVittie <smcv@collabora.com>
128 lines
3.9 KiB
C
128 lines
3.9 KiB
C
/* vi:set et sw=2 sts=2 cin cino=t0,f0,(0,{s,>2s,n-s,^-s,e-s:
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* Copyright © 2014-2019 Red Hat, Inc
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*
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* Authors:
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* Alexander Larsson <alexl@redhat.com>
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*/
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#include "config.h"
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#include "flatpak-run-cups-private.h"
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#include "flatpak-utils-private.h"
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static gboolean
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flatpak_run_cups_check_server_is_socket (const char *server)
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{
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if (g_str_has_prefix (server, "/") && strstr (server, ":") == NULL)
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return TRUE;
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return FALSE;
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}
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/* Try to find a default server from a cups confguration file */
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static char *
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flatpak_run_get_cups_server_name_config (const char *path)
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{
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g_autoptr(GFile) file = g_file_new_for_path (path);
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g_autoptr(GError) my_error = NULL;
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g_autoptr(GFileInputStream) input_stream = NULL;
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g_autoptr(GDataInputStream) data_stream = NULL;
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size_t len;
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input_stream = g_file_read (file, NULL, &my_error);
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if (my_error)
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{
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g_info ("CUPS configuration file '%s': %s", path, my_error->message);
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return NULL;
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}
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data_stream = g_data_input_stream_new (G_INPUT_STREAM (input_stream));
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while (TRUE)
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{
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g_autofree char *line = g_data_input_stream_read_line (data_stream, &len, NULL, NULL);
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if (line == NULL)
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break;
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g_strchug (line);
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if ((*line == '\0') || (*line == '#'))
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continue;
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g_auto(GStrv) tokens = g_strsplit (line, " ", 2);
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if ((tokens[0] != NULL) && (tokens[1] != NULL))
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{
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if (strcmp ("ServerName", tokens[0]) == 0)
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{
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g_strchug (tokens[1]);
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if (flatpak_run_cups_check_server_is_socket (tokens[1]))
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return g_strdup (tokens[1]);
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}
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}
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}
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return NULL;
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}
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static char *
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flatpak_run_get_cups_server_name (void)
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{
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g_autofree char * cups_server = NULL;
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g_autofree char * cups_config_path = NULL;
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/* TODO
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* we don't currently support cups servers located on the network, if such
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* server is detected, we simply ignore it and in the worst case we fallback
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* to the default socket
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*/
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cups_server = g_strdup (g_getenv ("CUPS_SERVER"));
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if (cups_server && flatpak_run_cups_check_server_is_socket (cups_server))
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return g_steal_pointer (&cups_server);
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g_clear_pointer (&cups_server, g_free);
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cups_config_path = g_build_filename (g_get_home_dir (), ".cups/client.conf", NULL);
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cups_server = flatpak_run_get_cups_server_name_config (cups_config_path);
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if (cups_server && flatpak_run_cups_check_server_is_socket (cups_server))
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return g_steal_pointer (&cups_server);
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g_clear_pointer (&cups_server, g_free);
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cups_server = flatpak_run_get_cups_server_name_config ("/etc/cups/client.conf");
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if (cups_server && flatpak_run_cups_check_server_is_socket (cups_server))
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return g_steal_pointer (&cups_server);
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// Fallback to default socket
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return g_strdup ("/var/run/cups/cups.sock");
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}
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void
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flatpak_run_add_cups_args (FlatpakBwrap *bwrap)
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{
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g_autofree char * sandbox_server_name = g_strdup ("/var/run/cups/cups.sock");
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g_autofree char * cups_server_name = flatpak_run_get_cups_server_name ();
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if (!g_file_test (cups_server_name, G_FILE_TEST_EXISTS))
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{
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g_info ("Could not find CUPS server");
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return;
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}
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flatpak_bwrap_add_args (bwrap,
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"--ro-bind", cups_server_name, sandbox_server_name,
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NULL);
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}
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