src/libsystemd/sd-bus/test-bus-server.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 #include <stdlib.h>
  24 #include <pthread.h>
  25 #include <unistd.h>
  26 #include <fcntl.h>
  27
  28 #include "log.h"
  29 #include "util.h"
  30 #include "macro.h"
  31
  32 #include "sd-bus.h"
  33 #include "bus-internal.h"
  34 #include "bus-message.h"
  35 #include "bus-util.h"
  36
  37 struct context {
  38         int fds[2];
  39
  40         bool client_negotiate_unix_fds;
  41         bool server_negotiate_unix_fds;
  42
  43         bool client_anonymous_auth;
  44         bool server_anonymous_auth;
  45 };
  46
  47 static void *server(void *p) {
  48         struct context *c = p;
  49         sd_bus *bus = NULL;
  50         sd_id128_t id;
  51         bool quit = false;
  52         int r;
  53
  54         assert_se(sd_id128_randomize(&id) >= 0);
  55
  56         assert_se(sd_bus_new(&bus) >= 0);
  57         assert_se(sd_bus_set_fd(bus, c->fds[0], c->fds[0]) >= 0);
  58         assert_se(sd_bus_set_server(bus, 1, id) >= 0);
  59         assert_se(sd_bus_set_anonymous(bus, c->server_anonymous_auth) >= 0);
  60         assert_se(sd_bus_negotiate_fds(bus, c->server_negotiate_unix_fds) >= 0);
  61         assert_se(sd_bus_start(bus) >= 0);
  62
  63         while (!quit) {
  64                 _cleanup_bus_message_unref_ sd_bus_message *m = NULL, *reply = NULL;
  65
  66                 r = sd_bus_process(bus, &m);
  67                 if (r < 0) {
  68                         log_error_errno(-r, "Failed to process requests: %m");
  69                         goto fail;
  70                 }
  71
  72                 if (r == 0) {
  73                         r = sd_bus_wait(bus, (uint64_t) -1);
  74                         if (r < 0) {
  75                                 log_error_errno(-r, "Failed to wait: %m");
  76                                 goto fail;
  77                         }
  78
  79                         continue;
  80                 }
  81
  82                 if (!m)
  83                         continue;
  84
  85                 log_info("Got message! member=%s", strna(sd_bus_message_get_member(m)));
  86
  87                 if (sd_bus_message_is_method_call(m, "org.freedesktop.systemd.test", "Exit")) {
  88
  89                         assert_se((sd_bus_can_send(bus, 'h') >= 1) == (c->server_negotiate_unix_fds && c->client_negotiate_unix_fds));
  90
  91                         r = sd_bus_message_new_method_return(m, &reply);
  92                         if (r < 0) {
  93                                 log_error_errno(-r, "Failed to allocate return: %m");
  94                                 goto fail;
  95                         }
  96
  97                         quit = true;
  98
  99                 } else if (sd_bus_message_is_method_call(m, NULL, NULL)) {
 100                         r = sd_bus_message_new_method_error(
 101                                         m,
 102                                         &reply,
 103                                         &SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_UNKNOWN_METHOD, "Unknown method."));
 104                         if (r < 0) {
 105                                 log_error_errno(-r, "Failed to allocate return: %m");
 106                                 goto fail;
 107                         }
 108                 }
 109
 110                 if (reply) {
 111                         r = sd_bus_send(bus, reply, NULL);
 112                         if (r < 0) {
 113                                 log_error_errno(-r, "Failed to send reply: %m");
 114                                 goto fail;
 115                         }
 116                 }
 117         }
 118
 119         r = 0;
 120
 121 fail:
 122         if (bus) {
 123                 sd_bus_flush(bus);
 124                 sd_bus_unref(bus);
 125         }
 126
 127         return INT_TO_PTR(r);
 128 }
 129
 130 static int client(struct context *c) {
 131         _cleanup_bus_message_unref_ sd_bus_message *m = NULL, *reply = NULL;
 132         _cleanup_bus_unref_ sd_bus *bus = NULL;
 133         sd_bus_error error = SD_BUS_ERROR_NULL;
 134         int r;
 135
 136         assert_se(sd_bus_new(&bus) >= 0);
 137         assert_se(sd_bus_set_fd(bus, c->fds[1], c->fds[1]) >= 0);
 138         assert_se(sd_bus_negotiate_fds(bus, c->client_negotiate_unix_fds) >= 0);
 139         assert_se(sd_bus_set_anonymous(bus, c->client_anonymous_auth) >= 0);
 140         assert_se(sd_bus_start(bus) >= 0);
 141
 142         r = sd_bus_message_new_method_call(
 143                         bus,
 144                         &m,
 145                         "org.freedesktop.systemd.test",
 146                         "/",
 147                         "org.freedesktop.systemd.test",
 148                         "Exit");
 149         if (r < 0) {
 150                 log_error_errno(-r, "Failed to allocate method call: %m");
 151                 return r;
 152         }
 153
 154         r = sd_bus_call(bus, m, 0, &error, &reply);
 155         if (r < 0) {
 156                 log_error("Failed to issue method call: %s", bus_error_message(&error, -r));
 157                 return r;
 158         }
 159
 160         return 0;
 161 }
 162
 163 static int test_one(bool client_negotiate_unix_fds, bool server_negotiate_unix_fds,
 164                     bool client_anonymous_auth, bool server_anonymous_auth) {
 165
 166         struct context c;
 167         pthread_t s;
 168         void *p;
 169         int r, q;
 170
 171         zero(c);
 172
 173         assert_se(socketpair(AF_UNIX, SOCK_STREAM, 0, c.fds) >= 0);
 174
 175         c.client_negotiate_unix_fds = client_negotiate_unix_fds;
 176         c.server_negotiate_unix_fds = server_negotiate_unix_fds;
 177         c.client_anonymous_auth = client_anonymous_auth;
 178         c.server_anonymous_auth = server_anonymous_auth;
 179
 180         r = pthread_create(&s, NULL, server, &c);
 181         if (r != 0)
 182                 return -r;
 183
 184         r = client(&c);
 185
 186         q = pthread_join(s, &p);
 187         if (q != 0)
 188                 return -q;
 189
 190         if (r < 0)
 191                 return r;
 192
 193         if (PTR_TO_INT(p) < 0)
 194                 return PTR_TO_INT(p);
 195
 196         return 0;
 197 }
 198
 199 int main(int argc, char *argv[]) {
 200         int r;
 201
 202         r = test_one(true, true, false, false);
 203         assert_se(r >= 0);
 204
 205         r = test_one(true, false, false, false);
 206         assert_se(r >= 0);
 207
 208         r = test_one(false, true, false, false);
 209         assert_se(r >= 0);
 210
 211         r = test_one(false, false, false, false);
 212         assert_se(r >= 0);
 213
 214         r = test_one(true, true, true, true);
 215         assert_se(r >= 0);
 216
 217         r = test_one(true, true, false, true);
 218         assert_se(r >= 0);
 219
 220         r = test_one(true, true, true, false);
 221         assert_se(r == -EPERM);
 222
 223         return EXIT_SUCCESS;
 224 }