| 1 | /* |
| 2 | * Copyright (c) 2014 Ian Sutton <ian@kremlin.cc> |
| 3 | * |
| 4 | * Permission to use, copy, modify, and distribute this software for any |
| 5 | * purpose with or without fee is hereby granted, provided that the above |
| 6 | * copyright notice and this permission notice appear in all copies. |
| 7 | * |
| 8 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| 9 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| 10 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
| 11 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| 12 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| 13 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| 14 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 15 | */ |
| 16 | |
| 17 | #include <unistd.h> |
| 18 | #include <limits.h> |
| 19 | #include <string.h> |
| 20 | |
| 21 | #include <glib/gprintf.h> |
| 22 | #include <glib-unix.h> |
| 23 | #include <polkit/polkit.h> |
| 24 | |
| 25 | #include "polkit-auth.h" |
| 26 | |
| 27 | static gboolean is_valid_action(GList *action_list, const gchar *action) { |
| 28 | |
| 29 | PolkitActionDescription *action_descr; |
| 30 | action_descr = (PolkitActionDescription *)g_list_first(action_list); |
| 31 | |
| 32 | while((action_descr = (PolkitActionDescription *)g_list_next(action_list))) |
| 33 | if(!g_strcmp0(action, polkit_action_description_get_action_id(action_descr))) |
| 34 | return TRUE; |
| 35 | |
| 36 | return FALSE; |
| 37 | } |
| 38 | |
| 39 | check_auth_result polkit_try_auth(const gchar *bus, const gchar *action) { |
| 40 | |
| 41 | GList *valid_actions; |
| 42 | PolkitAuthority *auth; |
| 43 | PolkitSubject *subj; |
| 44 | PolkitAuthorizationResult *result; |
| 45 | gboolean authorized, challenge; |
| 46 | |
| 47 | auth = NULL; |
| 48 | subj = NULL; |
| 49 | result = NULL; |
| 50 | valid_actions = NULL; |
| 51 | authorized = challenge = FALSE; |
| 52 | |
| 53 | auth = polkit_authority_get_sync(NULL, NULL); /* TODO timeout for this */ |
| 54 | subj = polkit_system_bus_name_new(bus); |
| 55 | valid_actions = polkit_authority_enumerate_actions_sync(auth, NULL, NULL); |
| 56 | |
| 57 | if(!auth || !valid_actions) |
| 58 | return ERROR_GENERIC; /* extremely unlikely */ |
| 59 | else if(!subj) |
| 60 | return ERROR_BADBUS; |
| 61 | else if(!is_valid_action(valid_actions, action)) |
| 62 | return ERROR_BADACTION; |
| 63 | |
| 64 | if(!(result = polkit_authority_check_authorization_sync(auth, subj, action, NULL, POLKIT_CHECK_AUTHORIZATION_FLAGS_ALLOW_USER_INTERACTION, NULL, NULL))) |
| 65 | return ERROR_GENERIC; /* TODO pass, check gerror and return more relevant error */ |
| 66 | |
| 67 | authorized = polkit_authorization_result_get_is_authorized(result); |
| 68 | challenge = polkit_authorization_result_get_is_challenge(result); |
| 69 | |
| 70 | /* free()'s before return */ |
| 71 | if(valid_actions) |
| 72 | g_object_unref(valid_actions); |
| 73 | if(auth) |
| 74 | g_object_unref(auth); |
| 75 | if(subj) |
| 76 | g_object_unref(subj); |
| 77 | if(result) |
| 78 | g_object_unref(result); |
| 79 | |
| 80 | if(authorized) { |
| 81 | |
| 82 | if(challenge) |
| 83 | return AUTHORIZED_BY_PROMPT; |
| 84 | |
| 85 | return AUTHORIZED_NATIVELY; |
| 86 | |
| 87 | } else if(challenge) |
| 88 | return UNAUTHORIZED_FAILED_PROMPT; |
| 89 | |
| 90 | return UNAUTHORIZED_NATIVELY; |
| 91 | } |