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

   1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
   2
   3 /***
   4   This file is part of systemd.
   5
   6   Copyright 2013 Lennart Poettering
   7
   8   systemd is free software; you can redistribute it and/or modify it
   9   under the terms of the GNU Lesser General Public License as published by
  10   the Free Software Foundation; either version 2.1 of the License, or
  11   (at your option) any later version.
  12
  13   systemd is distributed in the hope that it will be useful, but
  14   WITHOUT ANY WARRANTY; without even the implied warranty of
  15   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  16   Lesser General Public License for more details.
  17
  18   You should have received a copy of the GNU Lesser General Public License
  19   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  20 ***/
  21
  22 #include "log.h"
  23 #include "macro.h"
  24
  25 #include "bus-match.h"
  26 #include "bus-message.h"
  27 #include "bus-util.h"
  28 #include "bus-slot.h"
  29
  30 static bool mask[32];
  31
  32 static int filter(sd_bus_message *m, void *userdata, sd_bus_error *ret_error) {
  33         log_info("Ran %u", PTR_TO_UINT(userdata));
  34         assert_se(PTR_TO_UINT(userdata) < ELEMENTSOF(mask));
  35         mask[PTR_TO_UINT(userdata)] = true;
  36         return 0;
  37 }
  38
  39 static bool mask_contains(unsigned a[], unsigned n) {
  40         unsigned i, j;
  41
  42         for (i = 0; i < ELEMENTSOF(mask); i++) {
  43                 bool found = false;
  44
  45                 for (j = 0; j < n; j++)
  46                         if (a[j] == i) {
  47                                 found = true;
  48                                 break;
  49                         }
  50
  51                 if (found != mask[i])
  52                         return false;
  53         }
  54
  55         return true;
  56 }
  57
  58 static int match_add(sd_bus_slot *slots, struct bus_match_node *root, const char *match, int value) {
  59         struct bus_match_component *components = NULL;
  60         unsigned n_components = 0;
  61         sd_bus_slot *s;
  62         int r;
  63
  64         s = slots + value;
  65         zero(*s);
  66
  67         r = bus_match_parse(match, &components, &n_components);
  68         if (r < 0)
  69                 return r;
  70
  71         s->userdata = INT_TO_PTR(value);
  72         s->match_callback.callback = filter;
  73
  74         r = bus_match_add(root, components, n_components, &s->match_callback);
  75         bus_match_parse_free(components, n_components);
  76
  77         return r;
  78 }
  79
  80 static void test_match_scope(const char *match, enum bus_match_scope scope) {
  81         struct bus_match_component *components = NULL;
  82         unsigned n_components = 0;
  83
  84         assert_se(bus_match_parse(match, &components, &n_components) >= 0);
  85         assert_se(bus_match_get_scope(components, n_components) == scope);
  86         bus_match_parse_free(components, n_components);
  87 }
  88
  89 int main(int argc, char *argv[]) {
  90         struct bus_match_node root = {
  91                 .type = BUS_MATCH_ROOT,
  92         };
  93
  94         _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
  95         _cleanup_bus_close_unref_ sd_bus *bus = NULL;
  96         enum bus_match_node_type i;
  97         sd_bus_slot slots[19];
  98         int r;
  99
 100         r = sd_bus_open_system(&bus);
 101         if (r < 0)
 102                 return EXIT_TEST_SKIP;
 103
 104         assert_se(match_add(slots, &root, "arg2='wal\\'do',sender='foo',type='signal',interface='bar.x',", 1) >= 0);
 105         assert_se(match_add(slots, &root, "arg2='wal\\'do2',sender='foo',type='signal',interface='bar.x',", 2) >= 0);
 106         assert_se(match_add(slots, &root, "arg3='test',sender='foo',type='signal',interface='bar.x',", 3) >= 0);
 107         assert_se(match_add(slots, &root, "arg3='test',sender='foo',type='method_call',interface='bar.x',", 4) >= 0);
 108         assert_se(match_add(slots, &root, "", 5) >= 0);
 109         assert_se(match_add(slots, &root, "interface='quux.x'", 6) >= 0);
 110         assert_se(match_add(slots, &root, "interface='bar.x'", 7) >= 0);
 111         assert_se(match_add(slots, &root, "member='waldo',path='/foo/bar'", 8) >= 0);
 112         assert_se(match_add(slots, &root, "path='/foo/bar'", 9) >= 0);
 113         assert_se(match_add(slots, &root, "path_namespace='/foo'", 10) >= 0);
 114         assert_se(match_add(slots, &root, "path_namespace='/foo/quux'", 11) >= 0);
 115         assert_se(match_add(slots, &root, "arg1='two'", 12) >= 0);
 116         assert_se(match_add(slots, &root, "member='waldo',arg2path='/prefix/'", 13) >= 0);
 117         assert_se(match_add(slots, &root, "member=waldo,path='/foo/bar',arg3namespace='prefix'", 14) >= 0);
 118         assert_se(match_add(slots, &root, "arg4='pi'", 15) >= 0);
 119         assert_se(match_add(slots, &root, "arg4='pa'", 16) >= 0);
 120         assert_se(match_add(slots, &root, "arg4='po'", 17) >= 0);
 121         assert_se(match_add(slots, &root, "arg4='pu'", 18) >= 0);
 122
 123         bus_match_dump(&root, 0);
 124
 125         assert_se(sd_bus_message_new_signal(bus, &m, "/foo/bar", "bar.x", "waldo") >= 0);
 126         assert_se(sd_bus_message_append(m, "ssssas", "one", "two", "/prefix/three", "prefix.four", 3, "pi", "pa", "po") >= 0);
 127         assert_se(bus_message_seal(m, 1, 0) >= 0);
 128
 129         zero(mask);
 130         assert_se(bus_match_run(NULL, &root, m) == 0);
 131         assert_se(mask_contains((unsigned[]) { 9, 8, 7, 5, 10, 12, 13, 14, 15, 16, 17 }, 11));
 132
 133         assert_se(bus_match_remove(&root, &slots[8].match_callback) >= 0);
 134         assert_se(bus_match_remove(&root, &slots[13].match_callback) >= 0);
 135
 136         bus_match_dump(&root, 0);
 137
 138         zero(mask);
 139         assert_se(bus_match_run(NULL, &root, m) == 0);
 140         assert_se(mask_contains((unsigned[]) { 9, 5, 10, 12, 14, 7, 15, 16, 17 }, 9));
 141
 142         for (i = 0; i < _BUS_MATCH_NODE_TYPE_MAX; i++) {
 143                 char buf[32];
 144                 const char *x;
 145
 146                 assert_se(x = bus_match_node_type_to_string(i, buf, sizeof(buf)));
 147
 148                 if (i >= BUS_MATCH_MESSAGE_TYPE)
 149                         assert_se(bus_match_node_type_from_string(x, strlen(x)) == i);
 150         }
 151
 152         bus_match_free(&root);
 153
 154         test_match_scope("interface='foobar'", BUS_MATCH_GENERIC);
 155         test_match_scope("", BUS_MATCH_GENERIC);
 156         test_match_scope("interface='org.freedesktop.DBus.Local'", BUS_MATCH_LOCAL);
 157         test_match_scope("sender='org.freedesktop.DBus.Local'", BUS_MATCH_LOCAL);
 158         test_match_scope("member='gurke',path='/org/freedesktop/DBus/Local'", BUS_MATCH_LOCAL);
 159         test_match_scope("arg2='piep',sender='org.freedesktop.DBus',member='waldo'", BUS_MATCH_DRIVER);
 160
 161         return 0;
 162 }