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 "bus-match.h"
  23 #include "bus-message.h"
  24 #include "bus-slot.h"
  25 #include "bus-util.h"
  26 #include "log.h"
  27 #include "macro.h"
  28
  29 static bool mask[32];
  30
  31 static int filter(sd_bus_message *m, void *userdata, sd_bus_error *ret_error) {
  32         log_info("Ran %u", PTR_TO_UINT(userdata));
  33         assert_se(PTR_TO_UINT(userdata) < ELEMENTSOF(mask));
  34         mask[PTR_TO_UINT(userdata)] = true;
  35         return 0;
  36 }
  37
  38 static bool mask_contains(unsigned a[], unsigned n) {
  39         unsigned i, j;
  40
  41         for (i = 0; i < ELEMENTSOF(mask); i++) {
  42                 bool found = false;
  43
  44                 for (j = 0; j < n; j++)
  45                         if (a[j] == i) {
  46                                 found = true;
  47                                 break;
  48                         }
  49
  50                 if (found != mask[i])
  51                         return false;
  52         }
  53
  54         return true;
  55 }
  56
  57 static int match_add(sd_bus_slot *slots, struct bus_match_node *root, const char *match, int value) {
  58         struct bus_match_component *components = NULL;
  59         unsigned n_components = 0;
  60         sd_bus_slot *s;
  61         int r;
  62
  63         s = slots + value;
  64         zero(*s);
  65
  66         r = bus_match_parse(match, &components, &n_components);
  67         if (r < 0)
  68                 return r;
  69
  70         s->userdata = INT_TO_PTR(value);
  71         s->match_callback.callback = filter;
  72
  73         r = bus_match_add(root, components, n_components, &s->match_callback);
  74         bus_match_parse_free(components, n_components);
  75
  76         return r;
  77 }
  78
  79 static void test_match_scope(const char *match, enum bus_match_scope scope) {
  80         struct bus_match_component *components = NULL;
  81         unsigned n_components = 0;
  82
  83         assert_se(bus_match_parse(match, &components, &n_components) >= 0);
  84         assert_se(bus_match_get_scope(components, n_components) == scope);
  85         bus_match_parse_free(components, n_components);
  86 }
  87
  88 int main(int argc, char *argv[]) {
  89         struct bus_match_node root = {
  90                 .type = BUS_MATCH_ROOT,
  91         };
  92
  93         _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
  94         _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
  95         enum bus_match_node_type i;
  96         sd_bus_slot slots[19];
  97         int r;
  98
  99         r = sd_bus_open_system(&bus);
 100         if (r < 0)
 101                 return EXIT_TEST_SKIP;
 102
 103         assert_se(match_add(slots, &root, "arg2='wal\\'do',sender='foo',type='signal',interface='bar.x',", 1) >= 0);
 104         assert_se(match_add(slots, &root, "arg2='wal\\'do2',sender='foo',type='signal',interface='bar.x',", 2) >= 0);
 105         assert_se(match_add(slots, &root, "arg3='test',sender='foo',type='signal',interface='bar.x',", 3) >= 0);
 106         assert_se(match_add(slots, &root, "arg3='test',sender='foo',type='method_call',interface='bar.x',", 4) >= 0);
 107         assert_se(match_add(slots, &root, "", 5) >= 0);
 108         assert_se(match_add(slots, &root, "interface='quux.x'", 6) >= 0);
 109         assert_se(match_add(slots, &root, "interface='bar.x'", 7) >= 0);
 110         assert_se(match_add(slots, &root, "member='waldo',path='/foo/bar'", 8) >= 0);
 111         assert_se(match_add(slots, &root, "path='/foo/bar'", 9) >= 0);
 112         assert_se(match_add(slots, &root, "path_namespace='/foo'", 10) >= 0);
 113         assert_se(match_add(slots, &root, "path_namespace='/foo/quux'", 11) >= 0);
 114         assert_se(match_add(slots, &root, "arg1='two'", 12) >= 0);
 115         assert_se(match_add(slots, &root, "member='waldo',arg2path='/prefix/'", 13) >= 0);
 116         assert_se(match_add(slots, &root, "member=waldo,path='/foo/bar',arg3namespace='prefix'", 14) >= 0);
 117         assert_se(match_add(slots, &root, "arg4has='pi'", 15) >= 0);
 118         assert_se(match_add(slots, &root, "arg4has='pa'", 16) >= 0);
 119         assert_se(match_add(slots, &root, "arg4has='po'", 17) >= 0);
 120         assert_se(match_add(slots, &root, "arg4='pi'", 18) >= 0);
 121
 122         bus_match_dump(&root, 0);
 123
 124         assert_se(sd_bus_message_new_signal(bus, &m, "/foo/bar", "bar.x", "waldo") >= 0);
 125         assert_se(sd_bus_message_append(m, "ssssas", "one", "two", "/prefix/three", "prefix.four", 3, "pi", "pa", "po") >= 0);
 126         assert_se(bus_message_seal(m, 1, 0) >= 0);
 127
 128         zero(mask);
 129         assert_se(bus_match_run(NULL, &root, m) == 0);
 130         assert_se(mask_contains((unsigned[]) { 9, 8, 7, 5, 10, 12, 13, 14, 15, 16, 17 }, 11));
 131
 132         assert_se(bus_match_remove(&root, &slots[8].match_callback) >= 0);
 133         assert_se(bus_match_remove(&root, &slots[13].match_callback) >= 0);
 134
 135         bus_match_dump(&root, 0);
 136
 137         zero(mask);
 138         assert_se(bus_match_run(NULL, &root, m) == 0);
 139         assert_se(mask_contains((unsigned[]) { 9, 5, 10, 12, 14, 7, 15, 16, 17 }, 9));
 140
 141         for (i = 0; i < _BUS_MATCH_NODE_TYPE_MAX; i++) {
 142                 char buf[32];
 143                 const char *x;
 144
 145                 assert_se(x = bus_match_node_type_to_string(i, buf, sizeof(buf)));
 146
 147                 if (i >= BUS_MATCH_MESSAGE_TYPE)
 148                         assert_se(bus_match_node_type_from_string(x, strlen(x)) == i);
 149         }
 150
 151         bus_match_free(&root);
 152
 153         test_match_scope("interface='foobar'", BUS_MATCH_GENERIC);
 154         test_match_scope("", BUS_MATCH_GENERIC);
 155         test_match_scope("interface='org.freedesktop.DBus.Local'", BUS_MATCH_LOCAL);
 156         test_match_scope("sender='org.freedesktop.DBus.Local'", BUS_MATCH_LOCAL);
 157         test_match_scope("member='gurke',path='/org/freedesktop/DBus/Local'", BUS_MATCH_LOCAL);
 158         test_match_scope("arg2='piep',sender='org.freedesktop.DBus',member='waldo'", BUS_MATCH_DRIVER);
 159
 160         return 0;
 161 }