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https://github.com/servalproject/serval-dna.git
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92fa6c196a
Rename the logging primitive functions and utility functions, prefixing all with 'serval_log', eg: logMessage() -> serval_logf() etc. Add an XPRINTF xhexdump() function and use it to implement the serval_log_hexdump() utility, renamed from dump(). Add macros WHY_dump(), WARN_dump(), HINT_dump() and DEBUG_dump(), and use them everywhere. Remove the 'log.console.dump_config' and 'log.file.dump_config' configuration options; configuration is now dumped in every log prolog. The logging system now constructs the log prolog by invoking the new 'log_prolog' trigger, so that it no longer depends on the version string and configuration system. Any system that wants to present a message in the log prolog can define its own trigger, which calls standard log primitives to print the message. Split the logging system into a front-end (log.c) that provides the logging primitives and is independent of the configuration system, and a set of back-end "outputters" (log_output_console.c, log_output_file.c, log_output_android.c) that may depend on the configuration system and are decoupled from the front-end using the 'logoutput' link section. These log outputters are explicitly linked into executables by the Makefile rules, but could also be linked in using USE_FEATURE(). The USE_FEATURE() calls have _not_ been added to servald_features.c, so that different daemon executables can be built with the same feature set but different log outputs.
120 lines
3.3 KiB
C
120 lines
3.3 KiB
C
/*
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Serval DNA logging output to Android log
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Copyright (C) 2013-2015 Serval Project Inc.
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Copyright (C) 2016-2017 Flinders University
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include <android/log.h>
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#include "log_output.h"
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#include "feature.h"
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#include "conf.h"
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/* To enable logging to the Android system log, include USE_FEATURE(log_output_android) somewhere in
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* a source file that is always linked.
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*/
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DEFINE_FEATURE(log_output_android);
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/* Private state for Android log output.
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*/
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struct log_output_android_state {
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char buf[1024];
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struct strbuf strbuf;
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};
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#define DISABLED ((FILE *)1)
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static struct log_output_android_state static_state = {
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.strbuf = STRUCT_STRBUF_EMPTY
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};
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static inline struct log_output_android_state *_state(struct log_output *out)
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{
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assert(out->state);
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return (struct log_output_android_state *)(out->state);
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}
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/* Functions for querying configuration.
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*/
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static bool_t log_android_dump_config(const struct log_output *UNUSED(out))
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{
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return config.log.android.dump_config;
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}
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static int log_android_minimum_level(const struct log_output *UNUSED(out))
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{
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return config.log.android.level;
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}
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static bool_t log_android_show_pid(const struct log_output *UNUSED(out))
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{
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return config.log.android.show_pid;
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}
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static bool_t log_android_show_time(const struct log_output *UNUSED(out))
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{
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return config.log.android.show_time;
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}
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/* Log output operations.
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*/
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static void log_android_start_line(struct log_output_iterator *it, int level)
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{
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struct log_output *out = *it->output;
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struct log_output_android_state *state = _state(out);
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strbuf_init(&state->strbuf, state->buf, sizeof state->buf);
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it->xpf = XPRINTF_STRBUF(&state->strbuf);
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}
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static void log_android_end_line(struct log_output_iterator *it, int level)
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{
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int alevel = ANDROID_LOG_UNKNOWN;
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switch (level) {
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case LOG_LEVEL_FATAL: alevel = ANDROID_LOG_FATAL; break;
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case LOG_LEVEL_ERROR: alevel = ANDROID_LOG_ERROR; break;
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case LOG_LEVEL_WARN: alevel = ANDROID_LOG_WARN; break;
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case LOG_LEVEL_HINT:
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case LOG_LEVEL_INFO: alevel = ANDROID_LOG_INFO; break;
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case LOG_LEVEL_DEBUG: alevel = ANDROID_LOG_DEBUG; break;
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default: abort();
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}
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__android_log_print(alevel, "servald", "%s", _state(*it->output)->buf);
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}
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static struct log_output static_log_output = {
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.dump_config = log_android_dump_config,
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.minimum_level = log_android_minimum_level,
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.show_pid = log_android_show_pid,
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.show_time = log_android_show_time,
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.state = &static_state,
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.open = NULL,
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.capture_fd = NULL,
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.is_available = NULL,
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.start_line = log_android_start_line,
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.end_line = log_android_end_line,
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.flush = NULL,
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.close = NULL
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};
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DEFINE_LOG_OUTPUT(&static_log_output);
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