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de1c301e LP |
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 <errno.h> | |
23 | #include <stdlib.h> | |
24 | #include <stdarg.h> | |
25 | #include <stdbool.h> | |
26 | #include <string.h> | |
27 | #include <stdio.h> | |
28 | ||
29 | #include "util.h" | |
30 | ||
31 | #include "sd-bus.h" | |
32 | #include "bus-error.h" | |
33 | ||
fbfa72b0 LP |
34 | bool bus_error_is_dirty(sd_bus_error *e) { |
35 | if (!e) | |
36 | return 0; | |
37 | ||
38 | return e->name || e->message || e->need_free; | |
39 | } | |
40 | ||
de1c301e LP |
41 | void sd_bus_error_free(sd_bus_error *e) { |
42 | if (!e) | |
43 | return; | |
44 | ||
45 | if (e->need_free) { | |
46 | free((void*) e->name); | |
47 | free((void*) e->message); | |
48 | } | |
49 | ||
50 | e->name = e->message = NULL; | |
51 | e->need_free = false; | |
52 | } | |
53 | ||
54 | int sd_bus_error_set(sd_bus_error *e, const char *name, const char *format, ...) { | |
55 | char *n, *m = NULL; | |
56 | va_list ap; | |
57 | int r; | |
58 | ||
59 | if (!e) | |
60 | return 0; | |
fbfa72b0 | 61 | if (bus_error_is_dirty(e)) |
de1c301e LP |
62 | return -EINVAL; |
63 | if (!name) | |
64 | return -EINVAL; | |
65 | ||
66 | n = strdup(name); | |
67 | if (!n) | |
68 | return -ENOMEM; | |
69 | ||
70 | if (format) { | |
71 | va_start(ap, format); | |
72 | r = vasprintf(&m, format, ap); | |
73 | va_end(ap); | |
74 | ||
75 | if (r < 0) { | |
76 | free(n); | |
77 | return -ENOMEM; | |
78 | } | |
79 | } | |
80 | ||
81 | e->name = n; | |
82 | e->message = m; | |
83 | e->need_free = true; | |
84 | ||
85 | return 0; | |
86 | } | |
87 | ||
88 | int sd_bus_error_copy(sd_bus_error *dest, const sd_bus_error *e) { | |
89ffcd2a LP |
89 | char *x, *y = NULL; |
90 | ||
de1c301e LP |
91 | if (!dest) |
92 | return 0; | |
fbfa72b0 | 93 | if (bus_error_is_dirty(dest)) |
de1c301e LP |
94 | return -EINVAL; |
95 | if (!sd_bus_error_is_set(e)) | |
96 | return 0; | |
97 | ||
89ffcd2a LP |
98 | x = strdup(e->name); |
99 | if (!x) | |
100 | return -ENOMEM; | |
de1c301e | 101 | |
89ffcd2a LP |
102 | if (e->message) { |
103 | y = strdup(e->message); | |
104 | if (!y) { | |
105 | free(x); | |
de1c301e | 106 | return -ENOMEM; |
de1c301e | 107 | } |
89ffcd2a | 108 | } |
de1c301e | 109 | |
89ffcd2a LP |
110 | dest->name = x; |
111 | dest->message = y; | |
112 | dest->need_free = true; | |
de1c301e LP |
113 | return 0; |
114 | } | |
115 | ||
116 | void sd_bus_error_set_const(sd_bus_error *e, const char *name, const char *message) { | |
117 | if (!e) | |
118 | return; | |
fbfa72b0 | 119 | if (bus_error_is_dirty(e)) |
de1c301e LP |
120 | return; |
121 | ||
122 | e->name = name; | |
123 | e->message = message; | |
fbfa72b0 | 124 | e->need_free = false; |
de1c301e LP |
125 | } |
126 | ||
127 | int sd_bus_error_is_set(const sd_bus_error *e) { | |
128 | if (!e) | |
129 | return 0; | |
130 | ||
fbfa72b0 | 131 | return !!e->name; |
de1c301e LP |
132 | } |
133 | ||
134 | int sd_bus_error_has_name(const sd_bus_error *e, const char *name) { | |
135 | if (!e) | |
136 | return 0; | |
137 | ||
138 | return streq_ptr(e->name, name); | |
139 | } | |
140 | ||
141 | int bus_error_to_errno(const sd_bus_error* e) { | |
142 | ||
143 | /* Better replce this with a gperf table */ | |
144 | ||
eb01ba5d LP |
145 | if (!e) |
146 | return -EIO; | |
147 | ||
de1c301e LP |
148 | if (!e->name) |
149 | return -EIO; | |
150 | ||
151 | if (streq(e->name, "org.freedesktop.DBus.Error.NoMemory")) | |
152 | return -ENOMEM; | |
153 | ||
154 | if (streq(e->name, "org.freedesktop.DBus.Error.AuthFailed") || | |
155 | streq(e->name, "org.freedesktop.DBus.Error.AccessDenied")) | |
156 | return -EPERM; | |
157 | ||
eb01ba5d LP |
158 | if (streq(e->name, "org.freedesktop.DBus.Error.InvalidArgs")) |
159 | return -EINVAL; | |
160 | ||
161 | if (streq(e->name, "org.freedesktop.DBus.Error.UnixProcessIdUnknown")) | |
162 | return -ESRCH; | |
163 | ||
164 | if (streq(e->name, "org.freedesktop.DBus.Error.FileNotFound")) | |
165 | return -ENOENT; | |
166 | ||
167 | if (streq(e->name, "org.freedesktop.DBus.Error.FileExists")) | |
168 | return -EEXIST; | |
169 | ||
170 | if (streq(e->name, "org.freedesktop.DBus.Error.Timeout")) | |
171 | return -ETIMEDOUT; | |
172 | ||
173 | if (streq(e->name, "org.freedesktop.DBus.Error.IOError")) | |
174 | return -EIO; | |
175 | ||
176 | if (streq(e->name, "org.freedesktop.DBus.Error.Disconnected")) | |
177 | return -ECONNRESET; | |
178 | ||
179 | if (streq(e->name, "org.freedesktop.DBus.Error.NotSupported")) | |
180 | return -ENOTSUP; | |
181 | ||
de1c301e LP |
182 | return -EIO; |
183 | } | |
184 | ||
185 | int bus_error_from_errno(sd_bus_error *e, int error) { | |
186 | if (!e) | |
187 | return error; | |
188 | ||
eb01ba5d LP |
189 | switch (error) { |
190 | ||
191 | case -ENOMEM: | |
192 | sd_bus_error_set_const(e, "org.freedesktop.DBus.Error.NoMemory", "Out of memory"); | |
193 | break; | |
194 | ||
195 | case -EPERM: | |
196 | case -EACCES: | |
197 | sd_bus_error_set_const(e, "org.freedesktop.DBus.Error.AccessDenied", "Access denied"); | |
198 | break; | |
199 | ||
200 | case -EINVAL: | |
201 | sd_bus_error_set_const(e, "org.freedesktop.DBus.Error.InvalidArgs", "Invalid argument"); | |
202 | break; | |
203 | ||
204 | case -ESRCH: | |
205 | sd_bus_error_set_const(e, "org.freedesktop.DBus.Error.UnixProcessIdUnknown", "No such process"); | |
206 | break; | |
207 | ||
208 | case -ENOENT: | |
209 | sd_bus_error_set_const(e, "org.freedesktop.DBus.Error.FileNotFound", "File not found"); | |
210 | break; | |
211 | ||
212 | case -EEXIST: | |
213 | sd_bus_error_set_const(e, "org.freedesktop.DBus.Error.FileExists", "File exists"); | |
214 | break; | |
215 | ||
216 | case -ETIMEDOUT: | |
217 | case -ETIME: | |
218 | sd_bus_error_set_const(e, "org.freedesktop.DBus.Error.Timeout", "Timed out"); | |
219 | break; | |
220 | ||
221 | case -EIO: | |
222 | sd_bus_error_set_const(e, "org.freedesktop.DBus.Error.IOError", "Input/output error"); | |
223 | break; | |
224 | ||
225 | case -ENETRESET: | |
226 | case -ECONNABORTED: | |
227 | case -ECONNRESET: | |
228 | sd_bus_error_set_const(e, "org.freedesktop.DBus.Error.Disconnected", "Disconnected"); | |
229 | break; | |
230 | ||
231 | case -ENOTSUP: | |
232 | sd_bus_error_set_const(e, "org.freedesktop.DBus.Error.NotSupported", "Not supported"); | |
233 | break; | |
234 | } | |
de1c301e | 235 | |
eb01ba5d | 236 | sd_bus_error_set_const(e, "org.freedesktop.DBus.Error.Failed", "Operation failed"); |
de1c301e LP |
237 | return error; |
238 | } | |
e3017af9 LP |
239 | |
240 | const char *bus_error_message(const sd_bus_error *e, int error) { | |
241 | if (e && e->message) | |
242 | return e->message; | |
243 | ||
244 | return strerror(error); | |
245 | } |