src/libsystemd-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
  32 static bool mask[32];
  33
  34 static int filter(sd_bus *b, sd_bus_message *m, void *userdata) {
  35         log_info("Ran %i", PTR_TO_INT(userdata));
  36         mask[PTR_TO_INT(userdata)] = true;
  37         return 0;
  38 }
  39
  40 static bool mask_contains(unsigned a[], unsigned n) {
  41         unsigned i, j;
  42
  43         for (i = 0; i < ELEMENTSOF(mask); i++) {
  44                 bool found = false;
  45
  46                 for (j = 0; j < n; j++)
  47                         if (a[j] == i) {
  48                                 found = true;
  49                                 break;
  50                         }
  51
  52                 if (found != mask[i])
  53                         return false;
  54         }
  55
  56         return true;
  57 }
  58
  59 static int match_add(struct bus_match_node *root, const char *match, int value) {
  60         struct bus_match_component *components = NULL;
  61         unsigned n_components = 0;
  62         int r;
  63
  64         r = bus_match_parse(match, &components, &n_components);
  65         if (r < 0)
  66                 return r;
  67
  68         r = bus_match_add(root, components, n_components, filter, INT_TO_PTR(value), 0, NULL);
  69         bus_match_parse_free(components, n_components);
  70
  71         return r;
  72 }
  73
  74 static int match_remove(struct bus_match_node *root, const char *match, int value) {
  75         struct bus_match_component *components = NULL;
  76         unsigned n_components = 0;
  77         int r;
  78
  79         r = bus_match_parse(match, &components, &n_components);
  80         if (r < 0)
  81                 return r;
  82
  83         r = bus_match_remove(root, components, n_components, filter, INT_TO_PTR(value), 0);
  84         bus_match_parse_free(components, n_components);
  85
  86         return r;
  87 }
  88
  89 int main(int argc, char *argv[]) {
  90         struct bus_match_node root;
  91         _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
  92         enum bus_match_node_type i;
  93
  94         zero(root);
  95         root.type = BUS_MATCH_ROOT;
  96
  97         assert_se(match_add(&root, "arg2='wal\\'do',sender='foo',type='signal',interface='bar.x',", 1) >= 0);
  98         assert_se(match_add(&root, "arg2='wal\\'do2',sender='foo',type='signal',interface='bar.x',", 2) >= 0);
  99         assert_se(match_add(&root, "arg3='test',sender='foo',type='signal',interface='bar.x',", 3) >= 0);
 100         assert_se(match_add(&root, "arg3='test',sender='foo',type='method_call',interface='bar.x',", 4) >= 0);
 101         assert_se(match_add(&root, "", 5) >= 0);
 102         assert_se(match_add(&root, "interface='quux.x'", 6) >= 0);
 103         assert_se(match_add(&root, "interface='bar.x'", 7) >= 0);
 104         assert_se(match_add(&root, "member='waldo',path='/foo/bar'", 8) >= 0);
 105         assert_se(match_add(&root, "path='/foo/bar'", 9) >= 0);
 106         assert_se(match_add(&root, "path_namespace='/foo'", 10) >= 0);
 107         assert_se(match_add(&root, "path_namespace='/foo/quux'", 11) >= 0);
 108         assert_se(match_add(&root, "arg1='two'", 12) >= 0);
 109         assert_se(match_add(&root, "member='waldo',arg2path='/prefix/'", 13) >= 0);
 110         assert_se(match_add(&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(NULL, "/foo/bar", "bar.x", "waldo", &m) >= 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);
 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(match_remove(&root, "member='waldo',path='/foo/bar'", 8) > 0);
 123         assert_se(match_remove(&root, "arg2path='/prefix/',member='waldo'", 13) > 0);
 124         assert_se(match_remove(&root, "interface='bar.xx'", 7) == 0);
 125
 126         bus_match_dump(&root, 0);
 127
 128         zero(mask);
 129         assert_se(bus_match_run(NULL, &root, m) == 0);
 130         assert_se(mask_contains((unsigned[]) { 9, 5, 10, 12, 14, 7 }, 6));
 131
 132         for (i = 0; i < _BUS_MATCH_NODE_TYPE_MAX; i++) {
 133                 char buf[32];
 134                 const char *x;
 135
 136                 assert_se(x = bus_match_node_type_to_string(i, buf, sizeof(buf)));
 137
 138                 if (i >= BUS_MATCH_MESSAGE_TYPE)
 139                         assert_se(bus_match_node_type_from_string(x, strlen(x)) == i);
 140         }
 141
 142         bus_match_free(&root);
 143
 144         return 0;
 145 }