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