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profanity/src/log.c
Michael Vetter f21595597f Format code correctly
2021-10-05 10:01:27 +02:00

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/*
* log.c
* vim: expandtab:ts=4:sts=4:sw=4
*
* Copyright (C) 2012 - 2019 James Booth <boothj5@gmail.com>
* Copyright (C) 2018 - 2019 Michael Vetter <jubalh@idoru.org>
*
* This file is part of Profanity.
*
* Profanity is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Profanity is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Profanity. If not, see <https://www.gnu.org/licenses/>.
*
* In addition, as a special exception, the copyright holders give permission to
* link the code of portions of this program with the OpenSSL library under
* certain conditions as described in each individual source file, and
* distribute linked combinations including the two.
*
* You must obey the GNU General Public License in all respects for all of the
* code used other than OpenSSL. If you modify file(s) with this exception, you
* may extend this exception to your version of the file(s), but you are not
* obligated to do so. If you do not wish to do so, delete this exception
* statement from your version. If you delete this exception statement from all
* source files in the program, then also delete it here.
*
*/
#include "config.h"
#include <assert.h>
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "glib.h"
#include "glib/gstdio.h"
#include "log.h"
#include "common.h"
#include "config/files.h"
#include "config/preferences.h"
#include "xmpp/xmpp.h"
#include "xmpp/muc.h"
#define PROF "prof"
static FILE* logp;
static gchar* mainlogfile = NULL;
static gboolean user_provided_log = FALSE;
static GTimeZone* tz;
static GDateTime* dt;
static log_level_t level_filter;
static GHashTable* logs;
static GHashTable* groupchat_logs;
static GDateTime* session_started;
static int stderr_inited;
static log_level_t stderr_level;
static int stderr_pipe[2];
static char* stderr_buf;
static GString* stderr_msg;
enum {
STDERR_BUFSIZE = 4000,
STDERR_RETRY_NR = 5,
};
struct dated_chat_log
{
gchar* filename;
GDateTime* date;
};
static gboolean _log_roll_needed(struct dated_chat_log* dated_log);
static struct dated_chat_log* _create_log(const char* const other, const char* const login);
static struct dated_chat_log* _create_groupchat_log(const char* const room, const char* const login);
static void _free_chat_log(struct dated_chat_log* dated_log);
static gboolean _key_equals(void* key1, void* key2);
static char* _get_log_filename(const char* const other, const char* const login, GDateTime* dt, gboolean create);
static char* _get_groupchat_log_filename(const char* const room, const char* const login, GDateTime* dt,
gboolean create);
static void _rotate_log_file(void);
static char* _log_string_from_level(log_level_t level);
static void _chat_log_chat(const char* const login, const char* const other, const gchar* const msg,
chat_log_direction_t direction, GDateTime* timestamp, const char* const resourcepart);
static void _groupchat_log_chat(const gchar* const login, const gchar* const room, const gchar* const nick,
const gchar* const msg);
void
log_debug(const char* const msg, ...)
{
va_list arg;
va_start(arg, msg);
GString* fmt_msg = g_string_new(NULL);
g_string_vprintf(fmt_msg, msg, arg);
log_msg(PROF_LEVEL_DEBUG, PROF, fmt_msg->str);
g_string_free(fmt_msg, TRUE);
va_end(arg);
}
void
log_info(const char* const msg, ...)
{
va_list arg;
va_start(arg, msg);
GString* fmt_msg = g_string_new(NULL);
g_string_vprintf(fmt_msg, msg, arg);
log_msg(PROF_LEVEL_INFO, PROF, fmt_msg->str);
g_string_free(fmt_msg, TRUE);
va_end(arg);
}
void
log_warning(const char* const msg, ...)
{
va_list arg;
va_start(arg, msg);
GString* fmt_msg = g_string_new(NULL);
g_string_vprintf(fmt_msg, msg, arg);
log_msg(PROF_LEVEL_WARN, PROF, fmt_msg->str);
g_string_free(fmt_msg, TRUE);
va_end(arg);
}
void
log_error(const char* const msg, ...)
{
va_list arg;
va_start(arg, msg);
GString* fmt_msg = g_string_new(NULL);
g_string_vprintf(fmt_msg, msg, arg);
log_msg(PROF_LEVEL_ERROR, PROF, fmt_msg->str);
g_string_free(fmt_msg, TRUE);
va_end(arg);
}
void
log_init(log_level_t filter, char* log_file)
{
level_filter = filter;
tz = g_time_zone_new_local();
if (log_file) {
user_provided_log = TRUE;
}
gchar* lf = files_get_log_file(log_file);
logp = fopen(lf, "a");
g_chmod(lf, S_IRUSR | S_IWUSR);
mainlogfile = g_strdup(lf);
g_free(lf);
}
const char*
get_log_file_location(void)
{
return mainlogfile;
}
log_level_t
log_get_filter(void)
{
return level_filter;
}
void
log_close(void)
{
g_free(mainlogfile);
mainlogfile = NULL;
g_time_zone_unref(tz);
if (logp) {
fclose(logp);
}
}
void
log_msg(log_level_t level, const char* const area, const char* const msg)
{
if (level >= level_filter && logp) {
dt = g_date_time_new_now(tz);
char* level_str = _log_string_from_level(level);
gchar* date_fmt = g_date_time_format(dt, "%d/%m/%Y %H:%M:%S");
fprintf(logp, "%s: %s: %s: %s\n", date_fmt, area, level_str, msg);
g_date_time_unref(dt);
fflush(logp);
g_free(date_fmt);
if (prefs_get_boolean(PREF_LOG_ROTATE) && !user_provided_log) {
long result = ftell(logp);
if (result != -1 && result >= prefs_get_max_log_size()) {
_rotate_log_file();
}
}
}
}
log_level_t
log_level_from_string(char* log_level)
{
assert(log_level != NULL);
if (strcmp(log_level, "DEBUG") == 0) {
return PROF_LEVEL_DEBUG;
} else if (strcmp(log_level, "INFO") == 0) {
return PROF_LEVEL_INFO;
} else if (strcmp(log_level, "WARN") == 0) {
return PROF_LEVEL_WARN;
} else if (strcmp(log_level, "ERROR") == 0) {
return PROF_LEVEL_ERROR;
} else { // default logging is warn
return PROF_LEVEL_WARN;
}
}
static void
_rotate_log_file(void)
{
gchar* log_file = g_strdup(mainlogfile);
size_t len = strlen(log_file);
gchar* log_file_new = malloc(len + 4);
// find an empty name. from .log -> log.01 -> log.99
for (int i = 1; i < 100; i++) {
g_sprintf(log_file_new, "%s.%02d", log_file, i);
if (!g_file_test(log_file_new, G_FILE_TEST_EXISTS))
break;
}
log_close();
rename(log_file, log_file_new);
log_init(log_get_filter(), NULL);
free(log_file_new);
free(log_file);
log_info("Log has been rotated");
}
void
chat_log_init(void)
{
session_started = g_date_time_new_now_local();
log_info("Initialising chat logs");
logs = g_hash_table_new_full(g_str_hash, (GEqualFunc)_key_equals, free,
(GDestroyNotify)_free_chat_log);
}
void
groupchat_log_init(void)
{
log_info("Initialising groupchat logs");
groupchat_logs = g_hash_table_new_full(g_str_hash, (GEqualFunc)_key_equals, free,
(GDestroyNotify)_free_chat_log);
}
void
chat_log_msg_out(const char* const barejid, const char* const msg, const char* const resource)
{
if (prefs_get_boolean(PREF_CHLOG)) {
char* mybarejid = connection_get_barejid();
_chat_log_chat(mybarejid, barejid, msg, PROF_OUT_LOG, NULL, resource);
free(mybarejid);
}
}
void
chat_log_otr_msg_out(const char* const barejid, const char* const msg, const char* const resource)
{
if (prefs_get_boolean(PREF_CHLOG)) {
char* mybarejid = connection_get_barejid();
char* pref_otr_log = prefs_get_string(PREF_OTR_LOG);
if (strcmp(pref_otr_log, "on") == 0) {
_chat_log_chat(mybarejid, barejid, msg, PROF_OUT_LOG, NULL, resource);
} else if (strcmp(pref_otr_log, "redact") == 0) {
_chat_log_chat(mybarejid, barejid, "[redacted]", PROF_OUT_LOG, NULL, resource);
}
g_free(pref_otr_log);
free(mybarejid);
}
}
void
chat_log_pgp_msg_out(const char* const barejid, const char* const msg, const char* const resource)
{
if (prefs_get_boolean(PREF_CHLOG)) {
char* mybarejid = connection_get_barejid();
char* pref_pgp_log = prefs_get_string(PREF_PGP_LOG);
if (strcmp(pref_pgp_log, "on") == 0) {
_chat_log_chat(mybarejid, barejid, msg, PROF_OUT_LOG, NULL, resource);
} else if (strcmp(pref_pgp_log, "redact") == 0) {
_chat_log_chat(mybarejid, barejid, "[redacted]", PROF_OUT_LOG, NULL, resource);
}
g_free(pref_pgp_log);
free(mybarejid);
}
}
void
chat_log_omemo_msg_out(const char* const barejid, const char* const msg, const char* const resource)
{
if (prefs_get_boolean(PREF_CHLOG)) {
char* mybarejid = connection_get_barejid();
char* pref_omemo_log = prefs_get_string(PREF_OMEMO_LOG);
if (strcmp(pref_omemo_log, "on") == 0) {
_chat_log_chat(mybarejid, barejid, msg, PROF_OUT_LOG, NULL, resource);
} else if (strcmp(pref_omemo_log, "redact") == 0) {
_chat_log_chat(mybarejid, barejid, "[redacted]", PROF_OUT_LOG, NULL, resource);
}
g_free(pref_omemo_log);
free(mybarejid);
}
}
void
chat_log_otr_msg_in(ProfMessage* message)
{
if (prefs_get_boolean(PREF_CHLOG)) {
char* mybarejid = connection_get_barejid();
char* pref_otr_log = prefs_get_string(PREF_OTR_LOG);
if (message->enc == PROF_MSG_ENC_NONE || (strcmp(pref_otr_log, "on") == 0)) {
if (message->type == PROF_MSG_TYPE_MUCPM) {
_chat_log_chat(mybarejid, message->from_jid->barejid, message->plain, PROF_IN_LOG, message->timestamp, message->from_jid->resourcepart);
} else {
_chat_log_chat(mybarejid, message->from_jid->barejid, message->plain, PROF_IN_LOG, message->timestamp, NULL);
}
} else if (strcmp(pref_otr_log, "redact") == 0) {
if (message->type == PROF_MSG_TYPE_MUCPM) {
_chat_log_chat(mybarejid, message->from_jid->barejid, "[redacted]", PROF_IN_LOG, message->timestamp, message->from_jid->resourcepart);
} else {
_chat_log_chat(mybarejid, message->from_jid->barejid, "[redacted]", PROF_IN_LOG, message->timestamp, NULL);
}
}
g_free(pref_otr_log);
free(mybarejid);
}
}
void
chat_log_pgp_msg_in(ProfMessage* message)
{
if (prefs_get_boolean(PREF_CHLOG)) {
char* mybarejid = connection_get_barejid();
char* pref_pgp_log = prefs_get_string(PREF_PGP_LOG);
if (strcmp(pref_pgp_log, "on") == 0) {
if (message->type == PROF_MSG_TYPE_MUCPM) {
_chat_log_chat(mybarejid, message->from_jid->barejid, message->plain, PROF_IN_LOG, message->timestamp, message->from_jid->resourcepart);
} else {
_chat_log_chat(mybarejid, message->from_jid->barejid, message->plain, PROF_IN_LOG, message->timestamp, NULL);
}
} else if (strcmp(pref_pgp_log, "redact") == 0) {
if (message->type == PROF_MSG_TYPE_MUCPM) {
_chat_log_chat(mybarejid, message->from_jid->barejid, "[redacted]", PROF_IN_LOG, message->timestamp, message->from_jid->resourcepart);
} else {
_chat_log_chat(mybarejid, message->from_jid->barejid, "[redacted]", PROF_IN_LOG, message->timestamp, NULL);
}
}
g_free(pref_pgp_log);
free(mybarejid);
}
}
void
chat_log_omemo_msg_in(ProfMessage* message)
{
if (prefs_get_boolean(PREF_CHLOG)) {
char* mybarejid = connection_get_barejid();
char* pref_omemo_log = prefs_get_string(PREF_OMEMO_LOG);
if (strcmp(pref_omemo_log, "on") == 0) {
if (message->type == PROF_MSG_TYPE_MUCPM) {
_chat_log_chat(mybarejid, message->from_jid->barejid, message->plain, PROF_IN_LOG, message->timestamp, message->from_jid->resourcepart);
} else {
_chat_log_chat(mybarejid, message->from_jid->barejid, message->plain, PROF_IN_LOG, message->timestamp, NULL);
}
} else if (strcmp(pref_omemo_log, "redact") == 0) {
if (message->type == PROF_MSG_TYPE_MUCPM) {
_chat_log_chat(mybarejid, message->from_jid->barejid, "[redacted]", PROF_IN_LOG, message->timestamp, message->from_jid->resourcepart);
} else {
_chat_log_chat(mybarejid, message->from_jid->barejid, "[redacted]", PROF_IN_LOG, message->timestamp, message->from_jid->resourcepart);
}
}
g_free(pref_omemo_log);
free(mybarejid);
}
}
void
chat_log_msg_in(ProfMessage* message)
{
if (prefs_get_boolean(PREF_CHLOG)) {
char* mybarejid = connection_get_barejid();
if (message->type == PROF_MSG_TYPE_MUCPM) {
_chat_log_chat(mybarejid, message->from_jid->barejid, message->plain, PROF_IN_LOG, message->timestamp, message->from_jid->resourcepart);
} else {
_chat_log_chat(mybarejid, message->from_jid->barejid, message->plain, PROF_IN_LOG, message->timestamp, NULL);
}
free(mybarejid);
}
}
static void
_chat_log_chat(const char* const login, const char* const other, const char* const msg,
chat_log_direction_t direction, GDateTime* timestamp, const char* const resourcepart)
{
char* other_name;
GString* other_str = NULL;
if (resourcepart) {
other_str = g_string_new(other);
g_string_append(other_str, "_");
g_string_append(other_str, resourcepart);
other_name = other_str->str;
} else {
other_name = (char*)other;
}
struct dated_chat_log* dated_log = g_hash_table_lookup(logs, other_name);
// no log for user
if (dated_log == NULL) {
dated_log = _create_log(other_name, login);
g_hash_table_insert(logs, strdup(other_name), dated_log);
// log entry exists but file removed
} else if (!g_file_test(dated_log->filename, G_FILE_TEST_EXISTS)) {
dated_log = _create_log(other_name, login);
g_hash_table_replace(logs, strdup(other_name), dated_log);
// log file needs rolling
} else if (_log_roll_needed(dated_log)) {
dated_log = _create_log(other_name, login);
g_hash_table_replace(logs, strdup(other_name), dated_log);
}
if (resourcepart) {
g_string_free(other_str, TRUE);
}
if (timestamp == NULL) {
timestamp = g_date_time_new_now_local();
} else {
g_date_time_ref(timestamp);
}
gchar* date_fmt = g_date_time_format(timestamp, "%H:%M:%S");
FILE* chatlogp = fopen(dated_log->filename, "a");
g_chmod(dated_log->filename, S_IRUSR | S_IWUSR);
if (chatlogp) {
if (direction == PROF_IN_LOG) {
if (strncmp(msg, "/me ", 4) == 0) {
if (resourcepart) {
fprintf(chatlogp, "%s - *%s %s\n", date_fmt, resourcepart, msg + 4);
} else {
fprintf(chatlogp, "%s - *%s %s\n", date_fmt, other, msg + 4);
}
} else {
if (resourcepart) {
fprintf(chatlogp, "%s - %s: %s\n", date_fmt, resourcepart, msg);
} else {
fprintf(chatlogp, "%s - %s: %s\n", date_fmt, other, msg);
}
}
} else {
if (strncmp(msg, "/me ", 4) == 0) {
fprintf(chatlogp, "%s - *me %s\n", date_fmt, msg + 4);
} else {
fprintf(chatlogp, "%s - me: %s\n", date_fmt, msg);
}
}
fflush(chatlogp);
int result = fclose(chatlogp);
if (result == EOF) {
log_error("Error closing file %s, errno = %d", dated_log->filename, errno);
}
}
g_free(date_fmt);
g_date_time_unref(timestamp);
}
void
groupchat_log_msg_out(const gchar* const room, const gchar* const msg)
{
if (prefs_get_boolean(PREF_GRLOG)) {
char* mybarejid = connection_get_barejid();
char* mynick = muc_nick(room);
_groupchat_log_chat(mybarejid, room, mynick, msg);
free(mybarejid);
}
}
void
groupchat_log_msg_in(const gchar* const room, const gchar* const nick, const gchar* const msg)
{
if (prefs_get_boolean(PREF_GRLOG)) {
char* mybarejid = connection_get_barejid();
_groupchat_log_chat(mybarejid, room, nick, msg);
free(mybarejid);
}
}
void
groupchat_log_omemo_msg_out(const gchar* const room, const gchar* const msg)
{
if (prefs_get_boolean(PREF_CHLOG)) {
char* mybarejid = connection_get_barejid();
char* pref_omemo_log = prefs_get_string(PREF_OMEMO_LOG);
char* mynick = muc_nick(room);
if (strcmp(pref_omemo_log, "on") == 0) {
_groupchat_log_chat(mybarejid, room, mynick, msg);
} else if (strcmp(pref_omemo_log, "redact") == 0) {
_groupchat_log_chat(mybarejid, room, mynick, "[redacted]");
}
g_free(pref_omemo_log);
free(mybarejid);
}
}
void
groupchat_log_omemo_msg_in(const gchar* const room, const gchar* const nick, const gchar* const msg)
{
if (prefs_get_boolean(PREF_CHLOG)) {
char* mybarejid = connection_get_barejid();
char* pref_omemo_log = prefs_get_string(PREF_OMEMO_LOG);
if (strcmp(pref_omemo_log, "on") == 0) {
_groupchat_log_chat(mybarejid, room, nick, msg);
} else if (strcmp(pref_omemo_log, "redact") == 0) {
_groupchat_log_chat(mybarejid, room, nick, "[redacted]");
}
g_free(pref_omemo_log);
free(mybarejid);
}
}
void
_groupchat_log_chat(const gchar* const login, const gchar* const room, const gchar* const nick,
const gchar* const msg)
{
struct dated_chat_log* dated_log = g_hash_table_lookup(groupchat_logs, room);
// no log for room
if (dated_log == NULL) {
dated_log = _create_groupchat_log(room, login);
g_hash_table_insert(groupchat_logs, strdup(room), dated_log);
// log exists but needs rolling
} else if (_log_roll_needed(dated_log)) {
dated_log = _create_groupchat_log(room, login);
g_hash_table_replace(logs, strdup(room), dated_log);
}
GDateTime* dt_tmp = g_date_time_new_now_local();
gchar* date_fmt = g_date_time_format(dt_tmp, "%H:%M:%S");
FILE* grpchatlogp = fopen(dated_log->filename, "a");
g_chmod(dated_log->filename, S_IRUSR | S_IWUSR);
if (grpchatlogp) {
if (strncmp(msg, "/me ", 4) == 0) {
fprintf(grpchatlogp, "%s - *%s %s\n", date_fmt, nick, msg + 4);
} else {
fprintf(grpchatlogp, "%s - %s: %s\n", date_fmt, nick, msg);
}
fflush(grpchatlogp);
int result = fclose(grpchatlogp);
if (result == EOF) {
log_error("Error closing file %s, errno = %d", dated_log->filename, errno);
}
}
g_free(date_fmt);
g_date_time_unref(dt_tmp);
}
void
chat_log_close(void)
{
g_hash_table_destroy(logs);
g_hash_table_destroy(groupchat_logs);
g_date_time_unref(session_started);
}
static struct dated_chat_log*
_create_log(const char* const other, const char* const login)
{
GDateTime* now = g_date_time_new_now_local();
char* filename = _get_log_filename(other, login, now, TRUE);
struct dated_chat_log* new_log = malloc(sizeof(struct dated_chat_log));
new_log->filename = strdup(filename);
new_log->date = now;
free(filename);
return new_log;
}
static struct dated_chat_log*
_create_groupchat_log(const char* const room, const char* const login)
{
GDateTime* now = g_date_time_new_now_local();
char* filename = _get_groupchat_log_filename(room, login, now, TRUE);
struct dated_chat_log* new_log = malloc(sizeof(struct dated_chat_log));
new_log->filename = strdup(filename);
new_log->date = now;
free(filename);
return new_log;
}
static gboolean
_log_roll_needed(struct dated_chat_log* dated_log)
{
gboolean result = FALSE;
GDateTime* now = g_date_time_new_now_local();
if (g_date_time_get_day_of_year(dated_log->date) != g_date_time_get_day_of_year(now)) {
result = TRUE;
}
g_date_time_unref(now);
return result;
}
static void
_free_chat_log(struct dated_chat_log* dated_log)
{
if (dated_log) {
if (dated_log->filename) {
g_free(dated_log->filename);
dated_log->filename = NULL;
}
if (dated_log->date) {
g_date_time_unref(dated_log->date);
dated_log->date = NULL;
}
free(dated_log);
}
}
static gboolean
_key_equals(void* key1, void* key2)
{
gchar* str1 = (gchar*)key1;
gchar* str2 = (gchar*)key2;
return (g_strcmp0(str1, str2) == 0);
}
static char*
_get_log_filename(const char* const other, const char* const login, GDateTime* dt, gboolean create)
{
char* chatlogs_dir = files_get_data_path(DIR_CHATLOGS);
GString* log_file = g_string_new(chatlogs_dir);
free(chatlogs_dir);
gchar* login_dir = str_replace(login, "@", "_at_");
g_string_append_printf(log_file, "/%s", login_dir);
if (create) {
create_dir(log_file->str);
}
free(login_dir);
gchar* other_file = str_replace(other, "@", "_at_");
g_string_append_printf(log_file, "/%s", other_file);
if (create) {
create_dir(log_file->str);
}
free(other_file);
gchar* date = g_date_time_format(dt, "/%Y_%m_%d.log");
g_string_append(log_file, date);
g_free(date);
char* result = strdup(log_file->str);
g_string_free(log_file, TRUE);
return result;
}
static char*
_get_groupchat_log_filename(const char* const room, const char* const login, GDateTime* dt, gboolean create)
{
char* chatlogs_dir = files_get_data_path(DIR_CHATLOGS);
GString* log_file = g_string_new(chatlogs_dir);
free(chatlogs_dir);
gchar* login_dir = str_replace(login, "@", "_at_");
g_string_append_printf(log_file, "/%s", login_dir);
if (create) {
create_dir(log_file->str);
}
free(login_dir);
g_string_append(log_file, "/rooms");
if (create) {
create_dir(log_file->str);
}
gchar* room_file = str_replace(room, "@", "_at_");
g_string_append_printf(log_file, "/%s", room_file);
if (create) {
create_dir(log_file->str);
}
free(room_file);
gchar* date = g_date_time_format(dt, "/%Y_%m_%d.log");
g_string_append(log_file, date);
g_free(date);
char* result = strdup(log_file->str);
g_string_free(log_file, TRUE);
return result;
}
static char*
_log_string_from_level(log_level_t level)
{
switch (level) {
case PROF_LEVEL_ERROR:
return "ERR";
case PROF_LEVEL_WARN:
return "WRN";
case PROF_LEVEL_INFO:
return "INF";
case PROF_LEVEL_DEBUG:
return "DBG";
default:
return "LOG";
}
}
void
log_stderr_handler(void)
{
GString* const s = stderr_msg;
char* const buf = stderr_buf;
ssize_t size;
int retry = 0;
if (!stderr_inited)
return;
do {
size = read(stderr_pipe[0], buf, STDERR_BUFSIZE);
if (size == -1 && errno == EINTR && retry++ < STDERR_RETRY_NR)
continue;
if (size <= 0 || retry++ >= STDERR_RETRY_NR)
break;
for (int i = 0; i < size; ++i) {
if (buf[i] == '\n') {
log_msg(stderr_level, "stderr", s->str);
g_string_assign(s, "");
} else
g_string_append_c(s, buf[i]);
}
} while (1);
if (s->len > 0 && s->str[0] != '\0') {
log_msg(stderr_level, "stderr", s->str);
g_string_assign(s, "");
}
}
static int
log_stderr_nonblock_set(int fd)
{
int rc;
rc = fcntl(fd, F_GETFL);
if (rc >= 0)
rc = fcntl(fd, F_SETFL, rc | O_NONBLOCK);
return rc;
}
void
log_stderr_init(log_level_t level)
{
int rc;
rc = pipe(stderr_pipe);
if (rc != 0)
goto err;
close(STDERR_FILENO);
rc = dup2(stderr_pipe[1], STDERR_FILENO);
if (rc < 0)
goto err_close;
rc = log_stderr_nonblock_set(stderr_pipe[0])
?: log_stderr_nonblock_set(stderr_pipe[1]);
if (rc != 0)
goto err_close;
stderr_buf = malloc(STDERR_BUFSIZE);
stderr_msg = g_string_sized_new(STDERR_BUFSIZE);
stderr_level = level;
stderr_inited = 1;
if (stderr_buf == NULL || stderr_msg == NULL) {
errno = ENOMEM;
goto err_free;
}
return;
err_free:
if (stderr_msg != NULL)
g_string_free(stderr_msg, TRUE);
free(stderr_buf);
err_close:
close(stderr_pipe[0]);
close(stderr_pipe[1]);
err:
stderr_inited = 0;
log_error("Unable to init stderr log handler: %s", strerror(errno));
}
void
log_stderr_close(void)
{
if (!stderr_inited)
return;
/* handle remaining logs before close */
log_stderr_handler();
stderr_inited = 0;
free(stderr_buf);
g_string_free(stderr_msg, TRUE);
close(stderr_pipe[0]);
close(stderr_pipe[1]);
}
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