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

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