Use g_date_time_format_iso8601() - profani-tty - Profanity fork with TTY improvements

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author	Michael Vetter <jubalh@iodoru.org>	2020-09-30 19:41:18 +0200
committer	Michael Vetter <jubalh@iodoru.org>	2020-09-30 19:43:58 +0200
commit	7f5169c2e963a1c3a3508a0a368e5cf48ab832f7 (patch)
tree	8d37a5d9c22d57b577f6989f04ac8546f83eb95a /src/config/preferences.h
parent	17b1b431f563fa99e24e55a392c251f590bfc465 (diff)
download	profani-tty-7f5169c2e963a1c3a3508a0a368e5cf48ab832f7.tar.gz

Use g_date_time_format_iso8601()

This partly reverts d3a387a0ec6e5265f625de87318be2de610efb01.

For proanity 0.9.x we still wanted to support older glib versions so
that we can be packaged for various linux distros.

Now with 0.10 we want to move on.

Diffstat (limited to 'src/config/preferences.h')

0 files changed, 0 insertions, 0 deletions

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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 <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;
GString *mainlogfile;

static GTimeZone *tz;
static GDateTime *dt;
static log_level_t level_filter;

static GHashTable *logs;
static GHashTable *groupchat_logs;
static GDateTime *session_started;

enum {
    STDERR_BUFSIZE = 4000,
    STDERR_RETRY_NR = 5,
};
static int stderr_inited;
static log_level_t stderr_level;
static int stderr_pipe[2];
static char *stderr_buf;
static GString *stderr_msg;

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)
{
    level_filter = filter;
    tz = g_time_zone_new_local();
    char *log_file = files_get_log_file();
    logp = fopen(log_file, "a");
    g_chmod(log_file, S_IRUSR | S_IWUSR);
    mainlogfile = g_string_new(log_file);
    free(log_file);
}

void
log_reinit(void)
{
    log_close();
    log_init(level_filter);
}

char*
get_log_file_location(void)
{
    return mainlogfile->str;
}

log_level_t
log_get_filter(void)
{
    return level_filter;
}

void
log_close(void)
{
    g_string_free(mainlogfile, TRUE);
    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)) {
            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 to info
        return PROF_LEVEL_INFO;
    }
}

static void
_rotate_log_file(void)
{
    gchar *log_file = files_get_log_file();
    size_t len = strlen(log_file);
    gchar *log_file_new = malloc(len + 4);
    int i = 1;

    // find an empty name. from .log -> log.01 -> log.99
    for(; 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());

    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)) {
        const char *jid = connection_get_fulljid();
        Jid *jidp = jid_create(jid);
        _chat_log_chat(jidp->barejid, barejid, msg, PROF_OUT_LOG, NULL, resource);
        jid_destroy(jidp);
    }
}

void
chat_log_otr_msg_out(const char *const barejid, const char *const msg, const char *const resource)
{
    if (prefs_get_boolean(PREF_CHLOG)) {
        const char *jid = connection_get_fulljid();
        Jid *jidp = jid_create(jid);
        char *pref_otr_log = prefs_get_string(PREF_OTR_LOG);
        if (strcmp(pref_otr_log, "on") == 0) {
            _chat_log_chat(jidp->barejid, barejid, msg, PROF_OUT_LOG, NULL, resource);
        } else if (strcmp(pref_otr_log, "redact") == 0) {
            _chat_log_chat(jidp->barejid, barejid, "[redacted]", PROF_OUT_LOG, NULL, resource);
        }
        prefs_free_string(pref_otr_log);
        jid_destroy(jidp);
    }
}

void
chat_log_pgp_msg_out(const char *const barejid, const char *const msg, const char *const resource)
{
    if (prefs_get_boolean(PREF_CHLOG)) {
        const char *jid = connection_get_fulljid();
        Jid *jidp = jid_create(jid);
        char *pref_pgp_log = prefs_get_string(PREF_PGP_LOG);
        if (strcmp(pref_pgp_log, "on") == 0) {
            _chat_log_chat(jidp->barejid, barejid, msg, PROF_OUT_LOG, NULL, resource);
        } else if (strcmp(pref_pgp_log, "redact") == 0) {
            _chat_log_chat(jidp->barejid, barejid, "[redacted]", PROF_OUT_LOG, NULL, resource);
        }
        prefs_free_string(pref_pgp_log);
        jid_destroy(jidp);
    }
}

void
chat_log_omemo_msg_out(const char *const barejid, const char *const msg, const char *const resource)
{
    if (prefs_get_boolean(PREF_CHLOG)) {
        const char *jid = connection_get_fulljid();
        Jid *jidp = jid_create(jid);
        char *pref_omemo_log = prefs_get_string(PREF_OMEMO_LOG);
        if (strcmp(pref_omemo_log, "on") == 0) {
            _chat_log_chat(jidp->barejid, barejid, msg, PROF_OUT_LOG, NULL, resource);
        } else if (strcmp(pref_omemo_log, "redact") == 0) {
            _chat_log_chat(jidp->barejid, barejid, "[redacted]", PROF_OUT_LOG, NULL, resource);
        }
        prefs_free_string(pref_omemo_log);
        jid_destroy(jidp);
    }
}

void
chat_log_otr_msg_in(ProfMessage *message)
{
    if (prefs_get_boolean(PREF_CHLOG)) {
        const char *jid = connection_get_fulljid();
        Jid *jidp = jid_create(jid);
        char *pref_otr_log = prefs_get_string(PREF_OTR_LOG);
        if (message->enc == PROF_MSG_ENC_PLAIN || (strcmp(pref_otr_log, "on") == 0)) {
            if (message->mucuser) {
                _chat_log_chat(jidp->barejid, message->jid->barejid, message->plain, PROF_IN_LOG, message->timestamp, message->jid->resourcepart);
            } else {
                _chat_log_chat(jidp->barejid, message->jid->barejid, message->plain, PROF_IN_LOG, message->timestamp, NULL);
            }
        } else if (strcmp(pref_otr_log, "redact") == 0) {
            if (message->mucuser) {
                _chat_log_chat(jidp->barejid, message->jid->barejid, "[redacted]", PROF_IN_LOG, message->timestamp, message->jid->resourcepart);
            } else {
                _chat_log_chat(jidp->barejid, message->jid->barejid, "[redacted]", PROF_IN_LOG, message->timestamp, NULL);
            }
        }
        prefs_free_string(pref_otr_log);
        jid_destroy(jidp);
    }
}

void
chat_log_pgp_msg_in(ProfMessage *message)
{
    if (prefs_get_boolean(PREF_CHLOG)) {
        const char *jid = connection_get_fulljid();
        Jid *jidp = jid_create(jid);
        char *pref_pgp_log = prefs_get_string(PREF_PGP_LOG);
        if (strcmp(pref_pgp_log, "on") == 0) {
            if (message->mucuser) {
                _chat_log_chat(jidp->barejid, message->jid->barejid, message->plain, PROF_IN_LOG, message->timestamp, message->jid->resourcepart);
            } else {
                _chat_log_chat(jidp->barejid, message->jid->barejid, message->plain, PROF_IN_LOG, message->timestamp, NULL);
            }
        } else if (strcmp(pref_pgp_log, "redact") == 0) {
            if (message->mucuser) {
                _chat_log_chat(jidp->barejid, message->jid->barejid, "[redacted]", PROF_IN_LOG, message->timestamp, message->jid->resourcepart);
            } else {
                _chat_log_chat(jidp->barejid, message->jid->barejid, "[redacted]", PROF_IN_LOG, message->timestamp, NULL);
            }
        }
        prefs_free_string(pref_pgp_log);
        jid_destroy(jidp);
    }
}

void
chat_log_omemo_msg_in(ProfMessage *message)
{
    if (prefs_get_boolean(PREF_CHLOG)) {
        const char *jid = connection_get_fulljid();
        Jid *jidp = jid_create(jid);
        char *pref_omemo_log = prefs_get_string(PREF_OMEMO_LOG);
        if (strcmp(pref_omemo_log, "on") == 0) {
            if (message->mucuser) {
                _chat_log_chat(jidp->barejid, message->jid->barejid, message->plain, PROF_IN_LOG, message->timestamp, message->jid->resourcepart);
            } else {
                _chat_log_chat(jidp->barejid, message->jid->barejid, message->plain, PROF_IN_LOG, message->timestamp, NULL);
            }
        } else if (strcmp(pref_omemo_log, "redact") == 0) {
            if (message->mucuser) {
                _chat_log_chat(jidp->barejid, message->jid->barejid, "[redacted]", PROF_IN_LOG, message->timestamp, message->jid->resourcepart);
            } else {
                _chat_log_chat(jidp->barejid, message->jid->barejid, "[redacted]", PROF_IN_LOG, message->timestamp, message->jid->resourcepart);
            }
        }
        prefs_free_string(pref_omemo_log);
        jid_destroy(jidp);
    }
}

void
chat_log_msg_in(ProfMessage *message)
{
    if (prefs_get_boolean(PREF_CHLOG)) {
        const char *jid = connection_get_fulljid();
        Jid *jidp = jid_create(jid);

        if (message->mucuser) {
            _chat_log_chat(jidp->barejid, message->jid->barejid, message->plain, PROF_IN_LOG, message->timestamp, message->jid->resourcepart);
        } else {
            _chat_log_chat(jidp->barejid, message->jid->barejid, message->plain, PROF_IN_LOG, message->timestamp, NULL);
        }
        jid_destroy(jidp);
    }
}

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 *logp = fopen(dated_log->filename, "a");
    g_chmod(dated_log->filename, S_IRUSR | S_IWUSR);
    if (logp) {
        if (direction == PROF_IN_LOG) {
            if (strncmp(msg, "/me ", 4) == 0) {
                if (resourcepart) {
                    fprintf(logp, "%s - *%s %s\n", date_fmt, resourcepart, msg + 4);
                } else {
                    fprintf(logp, "%s - *%s %s\n", date_fmt, other, msg + 4);
                }
            } else {
                if (resourcepart) {
                    fprintf(logp, "%s - %s: %s\n", date_fmt, resourcepart, msg);
                } else {
                    fprintf(logp, "%s - %s: %s\n", date_fmt, other, msg);
                }
            }
        } else {
            if (strncmp(msg, "/me ", 4) == 0) {
                fprintf(logp, "%s - *me %s\n", date_fmt, msg + 4);
            } else {
                fprintf(logp, "%s - me: %s\n", date_fmt, msg);
            }
        }
        fflush(logp);
        int result = fclose(logp);
        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)) {
        const char *jid = connection_get_fulljid();
        Jid *jidp = jid_create(jid);
        char *mynick = muc_nick(room);
        _groupchat_log_chat(jidp->barejid, room, mynick, msg);
        jid_destroy(jidp);
    }
}

void
groupchat_log_msg_in(const gchar *const room, const gchar *const nick, const gchar *const msg)
{
    if (prefs_get_boolean(PREF_GRLOG)) {
        const char *jid = connection_get_fulljid();
        Jid *jidp = jid_create(jid);
        _groupchat_log_chat(jidp->barejid, room, nick, msg);
        jid_destroy(jidp);
    }
}

void
groupchat_log_omemo_msg_out(const gchar *const room, const gchar *const msg)
{
    if (prefs_get_boolean(PREF_CHLOG)) {
        const char *jid = connection_get_fulljid();
        Jid *jidp = jid_create(jid);
        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(jidp->barejid, room, mynick, msg);
        } else if (strcmp(pref_omemo_log, "redact") == 0) {
            _groupchat_log_chat(jidp->barejid, room, mynick, "[redacted]");
        }
        prefs_free_string(pref_omemo_log);
        jid_destroy(jidp);
    }
}

void
groupchat_log_omemo_msg_in(const gchar *const room, const gchar *const nick, const gchar *const msg)
{
    if (prefs_get_boolean(PREF_CHLOG)) {
        const char *jid = connection_get_fulljid();
        Jid *jidp = jid_create(jid);
        char *pref_omemo_log = prefs_get_string(PREF_OMEMO_LOG);
        if (strcmp(pref_omemo_log, "on") == 0) {
            _groupchat_log_chat(jidp->barejid, room, nick, msg);
        } else if (strcmp(pref_omemo_log, "redact") == 0) {
            _groupchat_log_chat(jidp->barejid, room, nick, "[redacted]");
        }
        prefs_free_string(pref_omemo_log);
        jid_destroy(jidp);
    }
}

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 = g_date_time_new_now_local();

    gchar *date_fmt = g_date_time_format(dt, "%H:%M:%S");

    FILE *logp = fopen(dated_log->filename, "a");
    g_chmod(dated_log->filename, S_IRUSR | S_IWUSR);
    if (logp) {
        if (strncmp(msg, "/me ", 4) == 0) {
            fprintf(logp, "%s - *%s %s\n", date_fmt, nick, msg + 4);
        } else {
            fprintf(logp, "%s - %s: %s\n", date_fmt, nick, msg);
        }

        fflush(logp);
        int result = fclose(logp);
        if (result == EOF) {
            log_error("Error closing file %s, errno = %d", dated_log->filename, errno);
        }
    }

    g_free(date_fmt);
    g_date_time_unref(dt);
}

GSList*
chat_log_get_previous(const gchar *const login, const gchar *const recipient)
{
    GSList *history = NULL;
    GDateTime *now = g_date_time_new_now_local();
    GDateTime *log_date = g_date_time_new(tz,
        g_date_time_get_year(session_started),
        g_date_time_get_month(session_started),
        g_date_time_get_day_of_month(session_started),
        g_date_time_get_hour(session_started),
        g_date_time_get_minute(session_started),
        g_date_time_get_second(session_started));

    // get data from all logs from the day the session was started to today
    while (g_date_time_compare(log_date, now) != 1) {
        char *filename = _get_log_filename(recipient, login, log_date, FALSE);

        FILE *logp = fopen(filename, "r");
        if (logp) {
            GString *header = g_string_new("");
            g_string_append_printf(header, "%d/%d/%d:",
                g_date_time_get_day_of_month(log_date),
                g_date_time_get_month(log_date),
                g_date_time_get_year(log_date));
            history = g_slist_append(history, header->str);
            g_string_free(header, FALSE);

            char *line;
            while ((line = file_getline(logp)) != NULL) {
                history = g_slist_append(history, line);
            }

            fclose(logp);
        }

        free(filename);

        GDateTime *next = g_date_time_add_days(log_date, 1);
        g_date_time_unref(log_date);
        log_date = next;
    }

    g_date_time_unref(log_date);
    g_date_time_unref(now);

    return history;
}

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;
    int i;

    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 (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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