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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
7ccbd1ae LP |
2 | |
3 | #include <syslog.h> | |
4 | ||
b1852c48 LP |
5 | #include "sd-id128.h" |
6 | ||
7 | #include "glob-util.h" | |
7ccbd1ae | 8 | #include "hexdecoct.h" |
11c3a366 | 9 | #include "macro.h" |
b1852c48 | 10 | #include "path-util.h" |
7ccbd1ae LP |
11 | #include "string-table.h" |
12 | #include "syslog-util.h" | |
b1852c48 | 13 | #include "unit-name.h" |
7ccbd1ae LP |
14 | |
15 | int syslog_parse_priority(const char **p, int *priority, bool with_facility) { | |
16 | int a = 0, b = 0, c = 0; | |
a5ee33b9 YW |
17 | const char *end; |
18 | size_t k; | |
7ccbd1ae LP |
19 | |
20 | assert(p); | |
21 | assert(*p); | |
22 | assert(priority); | |
23 | ||
24 | if ((*p)[0] != '<') | |
25 | return 0; | |
26 | ||
a5ee33b9 YW |
27 | end = strchr(*p, '>'); |
28 | if (!end) | |
7ccbd1ae LP |
29 | return 0; |
30 | ||
a5ee33b9 YW |
31 | k = end - *p; |
32 | assert(k > 0); | |
33 | ||
34 | if (k == 2) | |
7ccbd1ae | 35 | c = undecchar((*p)[1]); |
a5ee33b9 | 36 | else if (k == 3) { |
7ccbd1ae LP |
37 | b = undecchar((*p)[1]); |
38 | c = undecchar((*p)[2]); | |
a5ee33b9 | 39 | } else if (k == 4) { |
7ccbd1ae LP |
40 | a = undecchar((*p)[1]); |
41 | b = undecchar((*p)[2]); | |
42 | c = undecchar((*p)[3]); | |
7ccbd1ae LP |
43 | } else |
44 | return 0; | |
45 | ||
46 | if (a < 0 || b < 0 || c < 0 || | |
47 | (!with_facility && (a || b || c > 7))) | |
48 | return 0; | |
49 | ||
50 | if (with_facility) | |
51 | *priority = a*100 + b*10 + c; | |
52 | else | |
53 | *priority = (*priority & LOG_FACMASK) | c; | |
54 | ||
a5ee33b9 | 55 | *p += k + 1; |
7ccbd1ae LP |
56 | return 1; |
57 | } | |
58 | ||
59 | static const char *const log_facility_unshifted_table[LOG_NFACILITIES] = { | |
60 | [LOG_FAC(LOG_KERN)] = "kern", | |
61 | [LOG_FAC(LOG_USER)] = "user", | |
62 | [LOG_FAC(LOG_MAIL)] = "mail", | |
63 | [LOG_FAC(LOG_DAEMON)] = "daemon", | |
64 | [LOG_FAC(LOG_AUTH)] = "auth", | |
65 | [LOG_FAC(LOG_SYSLOG)] = "syslog", | |
66 | [LOG_FAC(LOG_LPR)] = "lpr", | |
67 | [LOG_FAC(LOG_NEWS)] = "news", | |
68 | [LOG_FAC(LOG_UUCP)] = "uucp", | |
69 | [LOG_FAC(LOG_CRON)] = "cron", | |
70 | [LOG_FAC(LOG_AUTHPRIV)] = "authpriv", | |
71 | [LOG_FAC(LOG_FTP)] = "ftp", | |
72 | [LOG_FAC(LOG_LOCAL0)] = "local0", | |
73 | [LOG_FAC(LOG_LOCAL1)] = "local1", | |
74 | [LOG_FAC(LOG_LOCAL2)] = "local2", | |
75 | [LOG_FAC(LOG_LOCAL3)] = "local3", | |
76 | [LOG_FAC(LOG_LOCAL4)] = "local4", | |
77 | [LOG_FAC(LOG_LOCAL5)] = "local5", | |
78 | [LOG_FAC(LOG_LOCAL6)] = "local6", | |
79 | [LOG_FAC(LOG_LOCAL7)] = "local7" | |
80 | }; | |
81 | ||
82 | DEFINE_STRING_TABLE_LOOKUP_WITH_FALLBACK(log_facility_unshifted, int, LOG_FAC(~0)); | |
83 | ||
84 | bool log_facility_unshifted_is_valid(int facility) { | |
85 | return facility >= 0 && facility <= LOG_FAC(~0); | |
86 | } | |
87 | ||
88 | static const char *const log_level_table[] = { | |
89 | [LOG_EMERG] = "emerg", | |
90 | [LOG_ALERT] = "alert", | |
91 | [LOG_CRIT] = "crit", | |
92 | [LOG_ERR] = "err", | |
93 | [LOG_WARNING] = "warning", | |
94 | [LOG_NOTICE] = "notice", | |
95 | [LOG_INFO] = "info", | |
96 | [LOG_DEBUG] = "debug" | |
97 | }; | |
98 | ||
99 | DEFINE_STRING_TABLE_LOOKUP_WITH_FALLBACK(log_level, int, LOG_DEBUG); | |
100 | ||
101 | bool log_level_is_valid(int level) { | |
102 | return level >= 0 && level <= LOG_DEBUG; | |
103 | } | |
b1852c48 LP |
104 | |
105 | /* The maximum size for a log namespace length. This is the file name size limit 255 minus the size of a | |
106 | * formatted machine ID minus a separator char */ | |
107 | #define LOG_NAMESPACE_MAX (NAME_MAX - (SD_ID128_STRING_MAX - 1) - 1) | |
108 | ||
109 | bool log_namespace_name_valid(const char *s) { | |
110 | /* Let's make sure the namespace fits in a filename that is prefixed with the machine ID and a dot | |
111 | * (so that /var/log/journal/<machine-id>.<namespace> can be created based on it). Also make sure it | |
112 | * is suitable as unit instance name, and does not contain fishy characters. */ | |
113 | ||
114 | if (!filename_is_valid(s)) | |
115 | return false; | |
116 | ||
117 | if (strlen(s) > LOG_NAMESPACE_MAX) | |
118 | return false; | |
119 | ||
120 | if (!unit_instance_is_valid(s)) | |
121 | return false; | |
122 | ||
123 | if (!string_is_safe(s)) | |
124 | return false; | |
125 | ||
126 | /* Let's avoid globbing for now */ | |
127 | if (string_is_glob(s)) | |
128 | return false; | |
129 | ||
130 | return true; | |
131 | } |