src/libsystemd/sd-bus/test-bus-match.c

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2 /***
   3   This file is part of systemd.
   4
   5   Copyright 2013 Lennart Poettering
   6
   7   systemd is free software; you can redistribute it and/or modify it
   8   under the terms of the GNU Lesser General Public License as published by
   9   the Free Software Foundation; either version 2.1 of the License, or
  10   (at your option) any later version.
  11
  12   systemd is distributed in the hope that it will be useful, but
  13   WITHOUT ANY WARRANTY; without even the implied warranty of
  14   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  15   Lesser General Public License for more details.
  16
  17   You should have received a copy of the GNU Lesser General Public License
  18   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  19 ***/
  20
  21 #include "bus-match.h"
  22 #include "bus-message.h"
  23 #include "bus-slot.h"
  24 #include "bus-util.h"
  25 #include "log.h"
  26 #include "macro.h"
  27
  28 static bool mask[32];
  29
  30 static int filter(sd_bus_message *m, void *userdata, sd_bus_error *ret_error) {
  31         log_info("Ran %u", PTR_TO_UINT(userdata));
  32         assert_se(PTR_TO_UINT(userdata) < ELEMENTSOF(mask));
  33         mask[PTR_TO_UINT(userdata)] = true;
  34         return 0;
  35 }
  36
  37 static bool mask_contains(unsigned a[], unsigned n) {
  38         unsigned i, j;
  39
  40         for (i = 0; i < ELEMENTSOF(mask); i++) {
  41                 bool found = false;
  42
  43                 for (j = 0; j < n; j++)
  44                         if (a[j] == i) {
  45                                 found = true;
  46                                 break;
  47                         }
  48
  49                 if (found != mask[i])
  50                         return false;
  51         }
  52
  53         return true;
  54 }
  55
  56 static int match_add(sd_bus_slot *slots, struct bus_match_node *root, const char *match, int value) {
  57         struct bus_match_component *components = NULL;
  58         unsigned n_components = 0;
  59         sd_bus_slot *s;
  60         int r;
  61
  62         s = slots + value;
  63         zero(*s);
  64
  65         r = bus_match_parse(match, &components, &n_components);
  66         if (r < 0)
  67                 return r;
  68
  69         s->userdata = INT_TO_PTR(value);
  70         s->match_callback.callback = filter;
  71
  72         r = bus_match_add(root, components, n_components, &s->match_callback);
  73         bus_match_parse_free(components, n_components);
  74
  75         return r;
  76 }
  77
  78 static void test_match_scope(const char *match, enum bus_match_scope scope) {
  79         struct bus_match_component *components = NULL;
  80         unsigned n_components = 0;
  81
  82         assert_se(bus_match_parse(match, &components, &n_components) >= 0);
  83         assert_se(bus_match_get_scope(components, n_components) == scope);
  84         bus_match_parse_free(components, n_components);
  85 }
  86
  87 int main(int argc, char *argv[]) {
  88         struct bus_match_node root = {
  89                 .type = BUS_MATCH_ROOT,
  90         };
  91
  92         _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
  93         _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
  94         enum bus_match_node_type i;
  95         sd_bus_slot slots[19];
  96         int r;
  97
  98         r = sd_bus_open_user(&bus);
  99         if (r < 0)
 100                 return EXIT_TEST_SKIP;
 101
 102         assert_se(match_add(slots, &root, "arg2='wal\\'do',sender='foo',type='signal',interface='bar.x',", 1) >= 0);
 103         assert_se(match_add(slots, &root, "arg2='wal\\'do2',sender='foo',type='signal',interface='bar.x',", 2) >= 0);
 104         assert_se(match_add(slots, &root, "arg3='test',sender='foo',type='signal',interface='bar.x',", 3) >= 0);
 105         assert_se(match_add(slots, &root, "arg3='test',sender='foo',type='method_call',interface='bar.x',", 4) >= 0);
 106         assert_se(match_add(slots, &root, "", 5) >= 0);
 107         assert_se(match_add(slots, &root, "interface='quux.x'", 6) >= 0);
 108         assert_se(match_add(slots, &root, "interface='bar.x'", 7) >= 0);
 109         assert_se(match_add(slots, &root, "member='waldo',path='/foo/bar'", 8) >= 0);
 110         assert_se(match_add(slots, &root, "path='/foo/bar'", 9) >= 0);
 111         assert_se(match_add(slots, &root, "path_namespace='/foo'", 10) >= 0);
 112         assert_se(match_add(slots, &root, "path_namespace='/foo/quux'", 11) >= 0);
 113         assert_se(match_add(slots, &root, "arg1='two'", 12) >= 0);
 114         assert_se(match_add(slots, &root, "member='waldo',arg2path='/prefix/'", 13) >= 0);
 115         assert_se(match_add(slots, &root, "member=waldo,path='/foo/bar',arg3namespace='prefix'", 14) >= 0);
 116         assert_se(match_add(slots, &root, "arg4has='pi'", 15) >= 0);
 117         assert_se(match_add(slots, &root, "arg4has='pa'", 16) >= 0);
 118         assert_se(match_add(slots, &root, "arg4has='po'", 17) >= 0);
 119         assert_se(match_add(slots, &root, "arg4='pi'", 18) >= 0);
 120
 121         bus_match_dump(&root, 0);
 122
 123         assert_se(sd_bus_message_new_signal(bus, &m, "/foo/bar", "bar.x", "waldo") >= 0);
 124         assert_se(sd_bus_message_append(m, "ssssas", "one", "two", "/prefix/three", "prefix.four", 3, "pi", "pa", "po") >= 0);
 125         assert_se(sd_bus_message_seal(m, 1, 0) >= 0);
 126
 127         zero(mask);
 128         assert_se(bus_match_run(NULL, &root, m) == 0);
 129         assert_se(mask_contains((unsigned[]) { 9, 8, 7, 5, 10, 12, 13, 14, 15, 16, 17 }, 11));
 130
 131         assert_se(bus_match_remove(&root, &slots[8].match_callback) >= 0);
 132         assert_se(bus_match_remove(&root, &slots[13].match_callback) >= 0);
 133
 134         bus_match_dump(&root, 0);
 135
 136         zero(mask);
 137         assert_se(bus_match_run(NULL, &root, m) == 0);
 138         assert_se(mask_contains((unsigned[]) { 9, 5, 10, 12, 14, 7, 15, 16, 17 }, 9));
 139
 140         for (i = 0; i < _BUS_MATCH_NODE_TYPE_MAX; i++) {
 141                 char buf[32];
 142                 const char *x;
 143
 144                 assert_se(x = bus_match_node_type_to_string(i, buf, sizeof(buf)));
 145
 146                 if (i >= BUS_MATCH_MESSAGE_TYPE)
 147                         assert_se(bus_match_node_type_from_string(x, strlen(x)) == i);
 148         }
 149
 150         bus_match_free(&root);
 151
 152         test_match_scope("interface='foobar'", BUS_MATCH_GENERIC);
 153         test_match_scope("", BUS_MATCH_GENERIC);
 154         test_match_scope("interface='org.freedesktop.DBus.Local'", BUS_MATCH_LOCAL);
 155         test_match_scope("sender='org.freedesktop.DBus.Local'", BUS_MATCH_LOCAL);
 156         test_match_scope("member='gurke',path='/org/freedesktop/DBus/Local'", BUS_MATCH_LOCAL);
 157         test_match_scope("arg2='piep',sender='org.freedesktop.DBus',member='waldo'", BUS_MATCH_DRIVER);
 158
 159         return 0;
 160 }