libsystemd: split up into subdirs

We still only produce on .so, but let's keep the sources separate to make things a bit
less messy.

1 files changed, 514 insertions, 0 deletions

diff --git a/src/libsystemd/sd-bus/busctl.c b/src/libsystemd/sd-bus/busctl.c
new file mode 100644
index 0000000000..e962ba3f63
--- /dev/null
+++ b/src/libsystemd/sd-bus/busctl.c
@@ -0,0 +1,514 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+  This file is part of systemd.
+
+  Copyright 2013 Lennart Poettering
+
+  systemd is free software; you can redistribute it and/or modify it
+  under the terms of the GNU Lesser General Public License as published by
+  the Free Software Foundation; either version 2.1 of the License, or
+  (at your option) any later version.
+
+  systemd is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+  Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public License
+  along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <getopt.h>
+
+#include "strv.h"
+#include "util.h"
+#include "log.h"
+#include "build.h"
+#include "pager.h"
+
+#include "sd-bus.h"
+#include "bus-message.h"
+#include "bus-internal.h"
+#include "bus-util.h"
+#include "bus-dump.h"
+
+static bool arg_no_pager = false;
+static char *arg_address = NULL;
+static bool arg_unique = false;
+static bool arg_acquired = false;
+static bool arg_activatable = false;
+static bool arg_show_machine = false;
+static char **arg_matches = NULL;
+static BusTransport arg_transport = BUS_TRANSPORT_LOCAL;
+static char *arg_host = NULL;
+static bool arg_user = false;
+
+static void pager_open_if_enabled(void) {
+
+        /* Cache result before we open the pager */
+        if (arg_no_pager)
+                return;
+
+        pager_open(false);
+}
+
+static int list_bus_names(sd_bus *bus, char **argv) {
+        _cleanup_strv_free_ char **acquired = NULL, **activatable = NULL;
+        _cleanup_free_ char **merged = NULL;
+        _cleanup_hashmap_free_ Hashmap *names = NULL;
+        char **i;
+        int r;
+        size_t max_i = 0;
+        unsigned n = 0;
+        void *v;
+        char *k;
+        Iterator iterator;
+
+        assert(bus);
+
+        r = sd_bus_list_names(bus, (arg_acquired || arg_unique) ? &acquired : NULL, arg_activatable ? &activatable : NULL);
+        if (r < 0) {
+                log_error("Failed to list names: %s", strerror(-r));
+                return r;
+        }
+
+        pager_open_if_enabled();
+
+        names = hashmap_new(string_hash_func, string_compare_func);
+        if (!names)
+                return log_oom();
+
+        STRV_FOREACH(i, acquired) {
+                max_i = MAX(max_i, strlen(*i));
+
+                r = hashmap_put(names, *i, INT_TO_PTR(1));
+                if (r < 0) {
+                        log_error("Failed to add to hashmap: %s", strerror(-r));
+                        return r;
+                }
+        }
+
+        STRV_FOREACH(i, activatable) {
+                max_i = MAX(max_i, strlen(*i));
+
+                r = hashmap_put(names, *i, INT_TO_PTR(2));
+                if (r < 0 && r != -EEXIST) {
+                        log_error("Failed to add to hashmap: %s", strerror(-r));
+                        return r;
+                }
+        }
+
+        merged = new(char*, hashmap_size(names) + 1);
+        HASHMAP_FOREACH_KEY(v, k, names, iterator)
+                merged[n++] = k;
+
+        merged[n] = NULL;
+        strv_sort(merged);
+
+        printf("%-*s %*s %-*s %-*s %-*s %-*s %-*s",
+               (int) max_i, "NAME", 10, "PID", 15, "PROCESS", 16, "USER", 13, "CONNECTION", 25, "UNIT", 10, "SESSION");
+
+        if (arg_show_machine)
+                puts(" MACHINE");
+        else
+                putchar('\n');
+
+        STRV_FOREACH(i, merged) {
+                _cleanup_bus_creds_unref_ sd_bus_creds *creds = NULL;
+                sd_id128_t mid;
+
+                if (hashmap_get(names, *i) == INT_TO_PTR(2)) {
+                        /* Activatable */
+
+                        printf("%-*s", (int) max_i, *i);
+                        printf("          - -               -                (activatable) -                         -         ");
+                        if (arg_show_machine)
+                                puts(" -");
+                        else
+                                putchar('\n');
+                        continue;
+
+                }
+
+                if (!arg_unique && (*i)[0] == ':')
+                        continue;
+
+                if (!arg_acquired && (*i)[0] != ':')
+                        continue;
+
+                printf("%-*s", (int) max_i, *i);
+
+                r = sd_bus_get_owner(bus, *i, SD_BUS_CREDS_UID|SD_BUS_CREDS_PID|SD_BUS_CREDS_COMM|SD_BUS_CREDS_UNIQUE_NAME|SD_BUS_CREDS_UNIT|SD_BUS_CREDS_SESSION, &creds);
+                if (r >= 0) {
+                        const char *unique, *session, *unit;
+                        pid_t pid;
+                        uid_t uid;
+
+                        r = sd_bus_creds_get_pid(creds, &pid);
+                        if (r >= 0) {
+                                const char *comm = NULL;
+
+                                sd_bus_creds_get_comm(creds, &comm);
+
+                                printf(" %10lu %-15s", (unsigned long) pid, strna(comm));
+                        } else
+                                fputs("          - -              ", stdout);
+
+                        r = sd_bus_creds_get_uid(creds, &uid);
+                        if (r >= 0) {
+                                _cleanup_free_ char *u = NULL;
+
+                                u = uid_to_name(uid);
+                                if (!u)
+                                        return log_oom();
+
+                                if (strlen(u) > 16)
+                                        u[16] = 0;
+
+                                printf(" %-16s", u);
+                        } else
+                                fputs(" -               ", stdout);
+
+                        r = sd_bus_creds_get_unique_name(creds, &unique);
+                        if (r >= 0)
+                                printf(" %-13s", unique);
+                        else
+                                fputs(" -            ", stdout);
+
+                        r = sd_bus_creds_get_unit(creds, &unit);
+                        if (r >= 0) {
+                                _cleanup_free_ char *e;
+
+                                e = ellipsize(unit, 25, 100);
+                                if (!e)
+                                        return log_oom();
+
+                                printf(" %-25s", e);
+                        } else
+                                fputs(" -                        ", stdout);
+
+                        r = sd_bus_creds_get_session(creds, &session);
+                        if (r >= 0)
+                                printf(" %-10s", session);
+                        else
+                                fputs(" -         ", stdout);
+
+                } else
+                        printf("          - -               -                -             -                         -         ");
+
+                if (arg_show_machine) {
+                        r = sd_bus_get_owner_machine_id(bus, *i, &mid);
+                        if (r >= 0) {
+                                char m[SD_ID128_STRING_MAX];
+                                printf(" %s\n", sd_id128_to_string(mid, m));
+                        } else
+                                puts(" -");
+                } else
+                        putchar('\n');
+        }
+
+        return 0;
+}
+
+static int monitor(sd_bus *bus, char *argv[]) {
+        bool added_something = false;
+        char **i;
+        int r;
+
+        STRV_FOREACH(i, argv+1) {
+                _cleanup_free_ char *m = NULL;
+
+                if (!service_name_is_valid(*i)) {
+                        log_error("Invalid service name '%s'", *i);
+                        return -EINVAL;
+                }
+
+                m = strjoin("sender='", *i, "'", NULL);
+                if (!m)
+                        return log_oom();
+
+                r = sd_bus_add_match(bus, m, NULL, NULL);
+                if (r < 0) {
+                        log_error("Failed to add match: %s", strerror(-r));
+                        return r;
+                }
+
+                added_something = true;
+        }
+
+        STRV_FOREACH(i, arg_matches) {
+                r = sd_bus_add_match(bus, *i, NULL, NULL);
+                if (r < 0) {
+                        log_error("Failed to add match: %s", strerror(-r));
+                        return r;
+                }
+
+                added_something = true;
+        }
+
+        if (!added_something) {
+                r = sd_bus_add_match(bus, "", NULL, NULL);
+                if (r < 0) {
+                        log_error("Failed to add match: %s", strerror(-r));
+                        return r;
+                }
+        }
+
+        for (;;) {
+                _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
+
+                r = sd_bus_process(bus, &m);
+                if (r < 0) {
+                        log_error("Failed to process bus: %s", strerror(-r));
+                        return r;
+                }
+
+                if (m) {
+                        bus_message_dump(m, stdout, true);
+                        continue;
+                }
+
+                if (r > 0)
+                        continue;
+
+                r = sd_bus_wait(bus, (uint64_t) -1);
+                if (r < 0) {
+                        log_error("Failed to wait for bus: %s", strerror(-r));
+                        return r;
+                }
+        }
+}
+
+static int status(sd_bus *bus, char *argv[]) {
+        _cleanup_bus_creds_unref_ sd_bus_creds *creds = NULL;
+        pid_t pid;
+        int r;
+
+        assert(bus);
+
+        if (strv_length(argv) != 2) {
+                log_error("Expects one argument.");
+                return -EINVAL;
+        }
+
+        r = parse_pid(argv[1], &pid);
+        if (r < 0)
+                r = sd_bus_get_owner(bus, argv[1], _SD_BUS_CREDS_ALL, &creds);
+        else
+                r = sd_bus_creds_new_from_pid(pid, _SD_BUS_CREDS_ALL, &creds);
+
+        if (r < 0) {
+                log_error("Failed to get credentials: %s", strerror(-r));
+                return r;
+        }
+
+        bus_creds_dump(creds, NULL);
+        return 0;
+}
+
+static int help(void) {
+
+        printf("%s [OPTIONS...] {COMMAND} ...\n\n"
+               "Introspect the bus.\n\n"
+               "  -h --help               Show this help\n"
+               "     --version            Show package version\n"
+               "     --no-pager           Do not pipe output into a pager\n"
+               "     --system             Connect to system bus\n"
+               "     --user               Connect to user bus\n"
+               "  -H --host=[USER@]HOST   Operate on remote host\n"
+               "  -M --machine=CONTAINER  Operate on local container\n"
+               "     --address=ADDRESS    Connect to bus specified by address\n"
+               "     --show-machine       Show machine ID column in list\n"
+               "     --unique             Only show unique names\n"
+               "     --acquired           Only show acquired names\n"
+               "     --activatable        Only show activatable names\n"
+               "     --match=MATCH        Only show matching messages\n\n"
+               "Commands:\n"
+               "  list                    List bus names\n"
+               "  monitor [SERVICE...]    Show bus traffic\n"
+               "  status NAME             Show name status\n"
+               "  help                    Show this help\n",
+               program_invocation_short_name);
+
+        return 0;
+}
+
+static int parse_argv(int argc, char *argv[]) {
+
+        enum {
+                ARG_VERSION = 0x100,
+                ARG_NO_PAGER,
+                ARG_SYSTEM,
+                ARG_USER,
+                ARG_ADDRESS,
+                ARG_MATCH,
+                ARG_SHOW_MACHINE,
+                ARG_UNIQUE,
+                ARG_ACQUIRED,
+                ARG_ACTIVATABLE
+        };
+
+        static const struct option options[] = {
+                { "help",         no_argument,       NULL, 'h'              },
+                { "version",      no_argument,       NULL, ARG_VERSION      },
+                { "no-pager",     no_argument,       NULL, ARG_NO_PAGER     },
+                { "system",       no_argument,       NULL, ARG_SYSTEM       },
+                { "user",         no_argument,       NULL, ARG_USER         },
+                { "address",      required_argument, NULL, ARG_ADDRESS      },
+                { "show-machine", no_argument,       NULL, ARG_SHOW_MACHINE },
+                { "unique",       no_argument,       NULL, ARG_UNIQUE       },
+                { "acquired",     no_argument,       NULL, ARG_ACQUIRED     },
+                { "activatable",  no_argument,       NULL, ARG_ACTIVATABLE  },
+                { "match",        required_argument, NULL, ARG_MATCH        },
+                { "host",         required_argument, NULL, 'H'              },
+                { "machine",      required_argument, NULL, 'M'              },
+                {},
+        };
+
+        int c;
+
+        assert(argc >= 0);
+        assert(argv);
+
+        while ((c = getopt_long(argc, argv, "hH:M:", options, NULL)) >= 0) {
+
+                switch (c) {
+
+                case 'h':
+                        return help();
+
+                case ARG_VERSION:
+                        puts(PACKAGE_STRING);
+                        puts(SYSTEMD_FEATURES);
+                        return 0;
+
+                case ARG_NO_PAGER:
+                        arg_no_pager = true;
+                        break;
+
+                case ARG_USER:
+                        arg_user = true;
+                        break;
+
+                case ARG_SYSTEM:
+                        arg_user = false;
+                        break;
+
+                case ARG_ADDRESS:
+                        arg_address = optarg;
+                        break;
+
+                case ARG_SHOW_MACHINE:
+                        arg_show_machine = true;
+                        break;
+
+                case ARG_UNIQUE:
+                        arg_unique = true;
+                        break;
+
+                case ARG_ACQUIRED:
+                        arg_acquired = true;
+                        break;
+
+                case ARG_ACTIVATABLE:
+                        arg_activatable = true;
+                        break;
+
+                case ARG_MATCH:
+                        if (strv_extend(&arg_matches, optarg) < 0)
+                                return log_oom();
+                        break;
+
+                case 'H':
+                        arg_transport = BUS_TRANSPORT_REMOTE;
+                        arg_host = optarg;
+                        break;
+
+                case 'M':
+                        arg_transport = BUS_TRANSPORT_CONTAINER;
+                        arg_host = optarg;
+                        break;
+
+                case '?':
+                        return -EINVAL;
+
+                default:
+                        assert_not_reached("Unhandled option");
+                }
+        }
+
+        if (!arg_unique && !arg_acquired && !arg_activatable)
+                arg_unique = arg_acquired = arg_activatable = true;
+
+        return 1;
+}
+
+static int busctl_main(sd_bus *bus, int argc, char *argv[]) {
+        assert(bus);
+
+        if (optind >= argc ||
+            streq(argv[optind], "list"))
+                return list_bus_names(bus, argv + optind);
+
+        if (streq(argv[optind], "monitor"))
+                return monitor(bus, argv + optind);
+
+        if (streq(argv[optind], "status"))
+                return status(bus, argv + optind);
+
+        if (streq(argv[optind], "help"))
+                return help();
+
+        log_error("Unknown command '%s'", argv[optind]);
+        return -EINVAL;
+}
+
+int main(int argc, char *argv[]) {
+        _cleanup_bus_unref_ sd_bus *bus = NULL;
+        int r;
+
+        log_parse_environment();
+        log_open();
+
+        r = parse_argv(argc, argv);
+        if (r <= 0)
+                goto finish;
+
+        if (arg_address) {
+                r = sd_bus_new(&bus);
+                if (r < 0) {
+                        log_error("Failed to allocate bus: %s", strerror(-r));
+                        goto finish;
+                }
+
+                r = sd_bus_set_address(bus, arg_address);
+                if (r < 0) {
+                        log_error("Failed to set address: %s", strerror(-r));
+                        goto finish;
+                }
+
+                r = sd_bus_set_bus_client(bus, true);
+                if (r < 0) {
+                        log_error("Failed to set bus client: %s", strerror(-r));
+                        goto finish;
+                }
+
+                r = sd_bus_start(bus);
+        } else
+                r = bus_open_transport(arg_transport, arg_host, arg_user, &bus);
+
+        if (r < 0) {
+                log_error("Failed to connect to bus: %s", strerror(-r));
+                goto finish;
+        }
+
+        r = busctl_main(bus, argc, argv);
+
+finish:
+        pager_close();
+
+        strv_free(arg_matches);
+
+        return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
+}