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39d7714a | 1 | /* |
b8ae064d | 2 | * Copyright (C) 1996-2023 The Squid Software Foundation and contributors |
39d7714a AR |
3 | * |
4 | * Squid software is distributed under GPLv2+ license and includes | |
5 | * contributions from numerous individuals and organizations. | |
6 | * Please see the COPYING and CONTRIBUTORS files for details. | |
7 | */ | |
8 | ||
9 | #include "squid.h" | |
10 | #include "acl/Gadgets.h" | |
11 | #include "base/TextException.h" | |
12 | #include "cache_cf.h" | |
675b8408 | 13 | #include "debug/Stream.h" |
39d7714a AR |
14 | #include "log/Config.h" |
15 | #include "log/File.h" | |
16 | #include "log/FormattedLog.h" | |
17 | #include "Parsing.h" | |
18 | #include "sbuf/Stream.h" | |
19 | #include "SquidConfig.h" | |
20 | ||
21 | FormattedLog::~FormattedLog() | |
22 | { | |
23 | close(); // TODO: destructing a Logfile object should be enough | |
24 | aclDestroyAclList(&aclList); | |
25 | safe_free(filename); | |
26 | // leave logFormat alone -- we do not own that object | |
27 | } | |
28 | ||
29 | bool | |
30 | FormattedLog::usesDaemon() const | |
31 | { | |
32 | return (filename && strncmp(filename, "daemon:", 7) == 0); | |
33 | } | |
34 | ||
35 | void | |
36 | FormattedLog::parseOptions(ConfigParser &parser, const char *defaultFormatName) | |
37 | { | |
38 | const char *explicitFormatName = nullptr; | |
39 | char *key = nullptr; | |
40 | char *value = nullptr; | |
41 | while (parser.optionalKvPair(key, value)) { | |
42 | ||
43 | if (strcmp(key, "on-error") == 0) { | |
44 | if (strcmp(value, "die") == 0) { | |
45 | fatal = true; | |
46 | } else if (strcmp(value, "drop") == 0) { | |
47 | fatal = false; | |
48 | } else { | |
49 | throw TextException(ToSBuf("unsupported ", cfg_directive, " on-error value: ", value, | |
50 | Debug::Extra, "expected 'drop' or 'die'"), Here()); | |
51 | } | |
52 | continue; | |
53 | } | |
54 | ||
55 | if (strcmp(key, "buffer-size") == 0) { | |
56 | parseBytesOptionValue(&bufferSize, "bytes", value); | |
57 | continue; | |
58 | } | |
59 | ||
60 | if (strcmp(key, "rotate") == 0) { | |
09835feb | 61 | rotationsToKeep = std::optional<unsigned int>(xatoui(value)); |
39d7714a AR |
62 | continue; |
63 | } | |
64 | ||
65 | if (strcmp(key, "logformat") == 0 && defaultFormatName) { | |
66 | if (explicitFormatName) | |
67 | throw TextException(ToSBuf("duplicated ", cfg_directive, " option: ", key), Here()); | |
68 | ||
69 | explicitFormatName = value; | |
70 | continue; | |
71 | } | |
72 | ||
73 | throw TextException(ToSBuf("unsupported ", cfg_directive, " option: ", key, "=", value), Here()); | |
74 | } | |
75 | ||
76 | if (const auto formatName = explicitFormatName ? explicitFormatName : defaultFormatName) { | |
77 | assert(defaultFormatName); // this log supports logformat=name | |
78 | setLogformat(formatName); | |
79 | } // else OK: this log does not support logformat=name and none was given | |
80 | } | |
81 | ||
82 | void | |
83 | FormattedLog::dumpOptions(std::ostream &os) const | |
84 | { | |
85 | /* do not report defaults */ | |
86 | ||
87 | // TODO: Here and elsewhere, report both explicitly configured settings and | |
88 | // various defaults. Properly excluding defaults requires wrapping most | |
09835feb | 89 | // non-pointer members in std::optional and adding methods to compute the final |
39d7714a AR |
90 | // option value after accounting for defaults (and those may change with |
91 | // reconfiguration!). And all that effort may still not result in a faithful | |
92 | // reproduction of the original squid.conf because of size unit changes, | |
93 | // order changes, duplicates removal, etc. More importantly, these reports | |
94 | // are much more useful for determining complete Squid state (especially | |
95 | // when triaging older Squids with some difficult-to-figure-out defaults). | |
96 | ||
97 | switch (type) { | |
98 | case Log::Format::CLF_UNKNOWN: | |
99 | break; // do not report a format when it was not configured | |
100 | ||
101 | case Log::Format::CLF_NONE: | |
102 | break; // the special "none" case has no format to report | |
103 | ||
104 | case Log::Format::CLF_SQUID: | |
105 | break; // do not report default format (XXX: icap_log default differs) | |
106 | ||
107 | case Log::Format::CLF_CUSTOM: | |
108 | if (logFormat) // paranoid; the format should be set | |
109 | os << " logformat=" << logFormat->name; | |
110 | break; | |
111 | ||
112 | default: | |
113 | os << " logformat=" << Log::LogConfig::BuiltInFormatName(type); | |
114 | } | |
115 | ||
116 | if (!fatal) | |
117 | os << " on-error=drop"; | |
118 | ||
119 | if (bufferSize != 8*MAX_URL) | |
120 | os << " buffer-size=" << bufferSize << "bytes"; | |
121 | ||
122 | if (rotationsToKeep) | |
123 | os << " rotate=" << rotationsToKeep.value(); | |
124 | } | |
125 | ||
126 | void | |
127 | FormattedLog::setLogformat(const char *logformatName) | |
128 | { | |
129 | assert(logformatName); | |
130 | assert(type == Log::Format::CLF_UNKNOWN); // set only once | |
131 | assert(!logFormat); // set only once | |
132 | ||
133 | debugs(3, 7, "possible " << filename << " logformat: " << logformatName); | |
134 | ||
135 | if (const auto lf = Log::TheConfig.findCustomFormat(logformatName)) { | |
136 | type = Log::Format::CLF_CUSTOM; | |
137 | logFormat = lf; | |
138 | return; | |
139 | } | |
140 | ||
141 | if (const auto id = Log::LogConfig::FindBuiltInFormat(logformatName)) { | |
142 | type = id; | |
143 | return; | |
144 | } | |
145 | ||
146 | throw TextException(ToSBuf("unknown logformat name in ", cfg_directive, ": ", logformatName), Here()); | |
147 | } | |
148 | ||
149 | void | |
150 | FormattedLog::open() | |
151 | { | |
152 | Must(!logfile); | |
153 | Must(filename); | |
154 | logfile = logfileOpen(filename, bufferSize, fatal); | |
155 | // the opening code reports failures and returns nil if they are non-fatal | |
156 | } | |
157 | ||
158 | void | |
159 | FormattedLog::rotate() | |
160 | { | |
161 | if (logfile) | |
162 | logfileRotate(logfile, rotationsToKeep.value_or(Config.Log.rotateNumber)); | |
163 | } | |
164 | ||
165 | void | |
166 | FormattedLog::close() | |
167 | { | |
168 | if (logfile) { | |
169 | logfileClose(logfile); | |
170 | logfile = nullptr; // deleted by the closing code | |
171 | } | |
172 | } | |
173 |