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

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2 /***
   3   This file is part of systemd.
   4
   5   Copyright 2013 Lennart Poettering
   6 ***/
   7
   8 #include <pthread.h>
   9 #include <stdlib.h>
  10
  11 #include "sd-bus.h"
  12
  13 #include "bus-internal.h"
  14 #include "bus-util.h"
  15 #include "log.h"
  16 #include "macro.h"
  17 #include "util.h"
  18
  19 struct context {
  20         int fds[2];
  21
  22         bool client_negotiate_unix_fds;
  23         bool server_negotiate_unix_fds;
  24
  25         bool client_anonymous_auth;
  26         bool server_anonymous_auth;
  27 };
  28
  29 static void *server(void *p) {
  30         struct context *c = p;
  31         sd_bus *bus = NULL;
  32         sd_id128_t id;
  33         bool quit = false;
  34         int r;
  35
  36         assert_se(sd_id128_randomize(&id) >= 0);
  37
  38         assert_se(sd_bus_new(&bus) >= 0);
  39         assert_se(sd_bus_set_fd(bus, c->fds[0], c->fds[0]) >= 0);
  40         assert_se(sd_bus_set_server(bus, 1, id) >= 0);
  41         assert_se(sd_bus_set_anonymous(bus, c->server_anonymous_auth) >= 0);
  42         assert_se(sd_bus_negotiate_fds(bus, c->server_negotiate_unix_fds) >= 0);
  43         assert_se(sd_bus_start(bus) >= 0);
  44
  45         while (!quit) {
  46                 _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *reply = NULL;
  47
  48                 r = sd_bus_process(bus, &m);
  49                 if (r < 0) {
  50                         log_error_errno(r, "Failed to process requests: %m");
  51                         goto fail;
  52                 }
  53
  54                 if (r == 0) {
  55                         r = sd_bus_wait(bus, (uint64_t) -1);
  56                         if (r < 0) {
  57                                 log_error_errno(r, "Failed to wait: %m");
  58                                 goto fail;
  59                         }
  60
  61                         continue;
  62                 }
  63
  64                 if (!m)
  65                         continue;
  66
  67                 log_info("Got message! member=%s", strna(sd_bus_message_get_member(m)));
  68
  69                 if (sd_bus_message_is_method_call(m, "org.freedesktop.systemd.test", "Exit")) {
  70
  71                         assert_se((sd_bus_can_send(bus, 'h') >= 1) ==
  72                                   (c->server_negotiate_unix_fds && c->client_negotiate_unix_fds));
  73
  74                         r = sd_bus_message_new_method_return(m, &reply);
  75                         if (r < 0) {
  76                                 log_error_errno(r, "Failed to allocate return: %m");
  77                                 goto fail;
  78                         }
  79
  80                         quit = true;
  81
  82                 } else if (sd_bus_message_is_method_call(m, NULL, NULL)) {
  83                         r = sd_bus_message_new_method_error(
  84                                         m,
  85                                         &reply,
  86                                         &SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_UNKNOWN_METHOD, "Unknown method."));
  87                         if (r < 0) {
  88                                 log_error_errno(r, "Failed to allocate return: %m");
  89                                 goto fail;
  90                         }
  91                 }
  92
  93                 if (reply) {
  94                         r = sd_bus_send(bus, reply, NULL);
  95                         if (r < 0) {
  96                                 log_error_errno(r, "Failed to send reply: %m");
  97                                 goto fail;
  98                         }
  99                 }
 100         }
 101
 102         r = 0;
 103
 104 fail:
 105         if (bus) {
 106                 sd_bus_flush(bus);
 107                 sd_bus_unref(bus);
 108         }
 109
 110         return INT_TO_PTR(r);
 111 }
 112
 113 static int client(struct context *c) {
 114         _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *reply = NULL;
 115         _cleanup_(sd_bus_unrefp) sd_bus *bus = NULL;
 116         sd_bus_error error = SD_BUS_ERROR_NULL;
 117         int r;
 118
 119         assert_se(sd_bus_new(&bus) >= 0);
 120         assert_se(sd_bus_set_fd(bus, c->fds[1], c->fds[1]) >= 0);
 121         assert_se(sd_bus_negotiate_fds(bus, c->client_negotiate_unix_fds) >= 0);
 122         assert_se(sd_bus_set_anonymous(bus, c->client_anonymous_auth) >= 0);
 123         assert_se(sd_bus_start(bus) >= 0);
 124
 125         r = sd_bus_message_new_method_call(
 126                         bus,
 127                         &m,
 128                         "org.freedesktop.systemd.test",
 129                         "/",
 130                         "org.freedesktop.systemd.test",
 131                         "Exit");
 132         if (r < 0)
 133                 return log_error_errno(r, "Failed to allocate method call: %m");
 134
 135         r = sd_bus_call(bus, m, 0, &error, &reply);
 136         if (r < 0) {
 137                 log_error("Failed to issue method call: %s", bus_error_message(&error, -r));
 138                 return r;
 139         }
 140
 141         return 0;
 142 }
 143
 144 static int test_one(bool client_negotiate_unix_fds, bool server_negotiate_unix_fds,
 145                     bool client_anonymous_auth, bool server_anonymous_auth) {
 146
 147         struct context c;
 148         pthread_t s;
 149         void *p;
 150         int r, q;
 151
 152         zero(c);
 153
 154         assert_se(socketpair(AF_UNIX, SOCK_STREAM, 0, c.fds) >= 0);
 155
 156         c.client_negotiate_unix_fds = client_negotiate_unix_fds;
 157         c.server_negotiate_unix_fds = server_negotiate_unix_fds;
 158         c.client_anonymous_auth = client_anonymous_auth;
 159         c.server_anonymous_auth = server_anonymous_auth;
 160
 161         r = pthread_create(&s, NULL, server, &c);
 162         if (r != 0)
 163                 return -r;
 164
 165         r = client(&c);
 166
 167         q = pthread_join(s, &p);
 168         if (q != 0)
 169                 return -q;
 170
 171         if (r < 0)
 172                 return r;
 173
 174         if (PTR_TO_INT(p) < 0)
 175                 return PTR_TO_INT(p);
 176
 177         return 0;
 178 }
 179
 180 int main(int argc, char *argv[]) {
 181         int r;
 182
 183         r = test_one(true, true, false, false);
 184         assert_se(r >= 0);
 185
 186         r = test_one(true, false, false, false);
 187         assert_se(r >= 0);
 188
 189         r = test_one(false, true, false, false);
 190         assert_se(r >= 0);
 191
 192         r = test_one(false, false, false, false);
 193         assert_se(r >= 0);
 194
 195         r = test_one(true, true, true, true);
 196         assert_se(r >= 0);
 197
 198         r = test_one(true, true, false, true);
 199         assert_se(r >= 0);
 200
 201         r = test_one(true, true, true, false);
 202         assert_se(r == -EPERM);
 203
 204         return EXIT_SUCCESS;
 205 }