summaryrefslogtreecommitdiffstats
path: root/src/shared/bus-map-properties.c
blob: e5e89339636856be410233f63655bac686a34512 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
/* SPDX-License-Identifier: LGPL-2.1-or-later */

#include "bus-map-properties.h"
#include "alloc-util.h"
#include "strv.h"
#include "bus-message.h"

int bus_map_id128(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) {
        sd_id128_t *p = userdata;
        const void *v;
        size_t n;
        int r;

        r = sd_bus_message_read_array(m, SD_BUS_TYPE_BYTE, &v, &n);
        if (r < 0)
                return r;

        if (n == 0)
                *p = SD_ID128_NULL;
        else if (n == 16)
                memcpy((*p).bytes, v, n);
        else
                return -EINVAL;

        return 0;
}

int bus_map_strv_sort(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) {
        _cleanup_strv_free_ char **l = NULL;
        char ***p = userdata;
        int r;

        r = sd_bus_message_read_strv_extend(m, &l);
        if (r < 0)
                return r;

        r = strv_extend_strv(p, l, false);
        if (r < 0)
                return r;

        strv_sort(*p);
        return 0;
}

static int map_basic(sd_bus *bus, const char *member, sd_bus_message *m, unsigned flags, sd_bus_error *error, void *userdata) {
        char type;
        int r;

        r = sd_bus_message_peek_type(m, &type, NULL);
        if (r < 0)
                return r;

        switch (type) {

        case SD_BUS_TYPE_STRING:
        case SD_BUS_TYPE_OBJECT_PATH: {
                const char **p = userdata;
                const char *s;

                r = sd_bus_message_read_basic(m, type, &s);
                if (r < 0)
                        return r;

                if (isempty(s))
                        s = NULL;

                if (flags & BUS_MAP_STRDUP)
                        return free_and_strdup((char **) userdata, s);

                *p = s;
                return 0;
        }

        case SD_BUS_TYPE_ARRAY: {
                _cleanup_strv_free_ char **l = NULL;
                char ***p = userdata;

                r = sd_bus_message_read_strv_extend(m, &l);
                if (r < 0)
                        return r;

                return strv_extend_strv(p, l, false);
        }

        case SD_BUS_TYPE_BOOLEAN: {
                int b;

                r = sd_bus_message_read_basic(m, type, &b);
                if (r < 0)
                        return r;

                if (flags & BUS_MAP_BOOLEAN_AS_BOOL)
                        *(bool*) userdata = b;
                else
                        *(int*) userdata = b;

                return 0;
        }

        case SD_BUS_TYPE_INT32:
        case SD_BUS_TYPE_UINT32: {
                uint32_t u, *p = userdata;

                r = sd_bus_message_read_basic(m, type, &u);
                if (r < 0)
                        return r;

                *p = u;
                return 0;
        }

        case SD_BUS_TYPE_INT64:
        case SD_BUS_TYPE_UINT64: {
                uint64_t t, *p = userdata;

                r = sd_bus_message_read_basic(m, type, &t);
                if (r < 0)
                        return r;

                *p = t;
                return 0;
        }

        case SD_BUS_TYPE_DOUBLE: {
                double d, *p = userdata;

                r = sd_bus_message_read_basic(m, type, &d);
                if (r < 0)
                        return r;

                *p = d;
                return 0;
        }}

        return -EOPNOTSUPP;
}

int bus_message_map_all_properties(
                sd_bus_message *m,
                const struct bus_properties_map *map,
                unsigned flags,
                sd_bus_error *error,
                void *userdata) {

        int r;

        assert(m);
        assert(map);

        r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "{sv}");
        if (r < 0)
                return r;

        while ((r = sd_bus_message_enter_container(m, SD_BUS_TYPE_DICT_ENTRY, "sv")) > 0) {
                const struct bus_properties_map *prop;
                const char *member;
                const char *contents;
                void *v;
                unsigned i;

                r = sd_bus_message_read_basic(m, SD_BUS_TYPE_STRING, &member);
                if (r < 0)
                        return r;

                for (i = 0, prop = NULL; map[i].member; i++)
                        if (streq(map[i].member, member)) {
                                prop = &map[i];
                                break;
                        }

                if (prop) {
                        r = sd_bus_message_peek_type(m, NULL, &contents);
                        if (r < 0)
                                return r;

                        r = sd_bus_message_enter_container(m, SD_BUS_TYPE_VARIANT, contents);
                        if (r < 0)
                                return r;

                        v = (uint8_t *)userdata + prop->offset;
                        if (map[i].set)
                                r = prop->set(sd_bus_message_get_bus(m), member, m, error, v);
                        else
                                r = map_basic(sd_bus_message_get_bus(m), member, m, flags, error, v);
                        if (r < 0)
                                return r;

                        r = sd_bus_message_exit_container(m);
                        if (r < 0)
                                return r;
                } else {
                        r = sd_bus_message_skip(m, "v");
                        if (r < 0)
                                return r;
                }

                r = sd_bus_message_exit_container(m);
                if (r < 0)
                        return r;
        }
        if (r < 0)
                return r;

        return sd_bus_message_exit_container(m);
}

int bus_map_all_properties(
                sd_bus *bus,
                const char *destination,
                const char *path,
                const struct bus_properties_map *map,
                unsigned flags,
                sd_bus_error *error,
                sd_bus_message **reply,
                void *userdata) {

        _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
        int r;

        assert(bus);
        assert(destination);
        assert(path);
        assert(map);
        assert(reply || (flags & BUS_MAP_STRDUP));

        r = sd_bus_call_method(
                        bus,
                        destination,
                        path,
                        "org.freedesktop.DBus.Properties",
                        "GetAll",
                        error,
                        &m,
                        "s", "");
        if (r < 0)
                return r;

        r = bus_message_map_all_properties(m, map, flags, error, userdata);
        if (r < 0)
                return r;

        if (reply)
                *reply = sd_bus_message_ref(m);

        return r;
}