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profanity/src/log.c

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/*
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* log.c
*
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* Copyright (C) 2012 - 2016 James Booth <boothj5@gmail.com>
*
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* 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
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* along with Profanity. If not, see <https://www.gnu.org/licenses/>.
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*
* 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.
*
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*/
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#include <assert.h>
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#include <errno.h>
#include <fcntl.h>
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#include <stdio.h>
#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
#include "glib.h"
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#include "glib/gstdio.h"
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#include "log.h"
#include "common.h"
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#include "config/files.h"
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#include "config/preferences.h"
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#include "xmpp/xmpp.h"
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#define PROF "prof"
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static FILE *logp;
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GString *mainlogfile;
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static GTimeZone *tz;
static GDateTime *dt;
static log_level_t level_filter;
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static GHashTable *logs;
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static GHashTable *groupchat_logs;
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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;
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struct dated_chat_log {
gchar *filename;
GDateTime *date;
};
static gboolean _log_roll_needed(struct dated_chat_log *dated_log);
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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);
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static void _free_chat_log(struct dated_chat_log *dated_log);
static gboolean _key_equals(void *key1, void *key2);
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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);
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static void _rotate_log_file(void);
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static char* _log_string_from_level(log_level_t level);
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static void _chat_log_chat(const char *const login, const char *const other, const gchar *const msg,
chat_log_direction_t direction, GDateTime *timestamp);
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void
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log_debug(const char *const msg, ...)
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{
va_list arg;
va_start(arg, msg);
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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);
}
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void
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log_info(const char *const msg, ...)
{
va_list arg;
va_start(arg, msg);
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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);
}
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void
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log_warning(const char *const msg, ...)
{
va_list arg;
va_start(arg, msg);
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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);
}
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void
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log_error(const char *const msg, ...)
{
va_list arg;
va_start(arg, msg);
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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);
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}
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void
log_init(log_level_t filter)
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{
level_filter = filter;
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tz = g_time_zone_new_local();
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char *log_file = files_get_log_file();
logp = fopen(log_file, "a");
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g_chmod(log_file, S_IRUSR | S_IWUSR);
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mainlogfile = g_string_new(log_file);
free(log_file);
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}
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void
log_reinit(void)
{
log_close();
log_init(level_filter);
}
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char*
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get_log_file_location(void)
{
return mainlogfile->str;
}
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log_level_t
log_get_filter(void)
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{
return level_filter;
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}
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void
log_close(void)
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{
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g_string_free(mainlogfile, TRUE);
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g_time_zone_unref(tz);
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if (logp) {
fclose(logp);
}
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}
void
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log_msg(log_level_t level, const char *const area, const char *const msg)
{
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if (level >= level_filter && logp) {
dt = g_date_time_new_now(tz);
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char *level_str = _log_string_from_level(level);
gchar *date_fmt = g_date_time_format(dt, "%d/%m/%Y %H:%M:%S");
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fprintf(logp, "%s: %s: %s: %s\n", date_fmt, area, level_str, msg);
g_date_time_unref(dt);
fflush(logp);
g_free(date_fmt);
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if (prefs_get_boolean(PREF_LOG_ROTATE)) {
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long result = ftell(logp);
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if (result != -1 && result >= prefs_get_max_log_size()) {
_rotate_log_file();
}
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}
}
}
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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;
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} else if (strcmp(log_level, "ERROR") == 0) {
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return PROF_LEVEL_ERROR;
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} else { // default to info
return PROF_LEVEL_INFO;
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}
}
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static void
_rotate_log_file(void)
{
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char *log_file = files_get_log_file();
size_t len = strlen(log_file);
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char *log_file_new = malloc(len + 3);
strncpy(log_file_new, log_file, len);
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log_file_new[len] = '.';
log_file_new[len+1] = '1';
log_file_new[len+2] = 0;
log_close();
rename(log_file, log_file_new);
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log_init(log_get_filter());
free(log_file_new);
free(log_file);
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log_info("Log has been rotated");
}
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void
chat_log_init(void)
{
session_started = g_date_time_new_now_local();
log_info("Initialising chat logs");
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logs = g_hash_table_new_full(g_str_hash, (GEqualFunc) _key_equals, free,
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(GDestroyNotify)_free_chat_log);
}
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void
groupchat_log_init(void)
{
log_info("Initialising groupchat logs");
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groupchat_logs = g_hash_table_new_full(g_str_hash, (GEqualFunc) _key_equals, free,
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(GDestroyNotify)_free_chat_log);
}
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void
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chat_log_msg_out(const char *const barejid, const char *const msg)
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{
if (prefs_get_boolean(PREF_CHLOG)) {
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const char *jid = connection_get_fulljid();
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Jid *jidp = jid_create(jid);
_chat_log_chat(jidp->barejid, barejid, msg, PROF_OUT_LOG, NULL);
jid_destroy(jidp);
}
}
void
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chat_log_otr_msg_out(const char *const barejid, const char *const msg)
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{
if (prefs_get_boolean(PREF_CHLOG)) {
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const char *jid = connection_get_fulljid();
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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);
} else if (strcmp(pref_otr_log, "redact") == 0) {
_chat_log_chat(jidp->barejid, barejid, "[redacted]", PROF_OUT_LOG, NULL);
}
prefs_free_string(pref_otr_log);
jid_destroy(jidp);
}
}
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void
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chat_log_pgp_msg_out(const char *const barejid, const char *const msg)
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{
if (prefs_get_boolean(PREF_CHLOG)) {
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const char *jid = connection_get_fulljid();
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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);
} else if (strcmp(pref_pgp_log, "redact") == 0) {
_chat_log_chat(jidp->barejid, barejid, "[redacted]", PROF_OUT_LOG, NULL);
}
prefs_free_string(pref_pgp_log);
jid_destroy(jidp);
}
}
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void
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chat_log_otr_msg_in(const char *const barejid, const char *const msg, gboolean was_decrypted, GDateTime *timestamp)
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{
if (prefs_get_boolean(PREF_CHLOG)) {
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const char *jid = connection_get_fulljid();
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Jid *jidp = jid_create(jid);
char *pref_otr_log = prefs_get_string(PREF_OTR_LOG);
if (!was_decrypted || (strcmp(pref_otr_log, "on") == 0)) {
_chat_log_chat(jidp->barejid, barejid, msg, PROF_IN_LOG, timestamp);
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} else if (strcmp(pref_otr_log, "redact") == 0) {
_chat_log_chat(jidp->barejid, barejid, "[redacted]", PROF_IN_LOG, timestamp);
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}
prefs_free_string(pref_otr_log);
jid_destroy(jidp);
}
}
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void
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chat_log_pgp_msg_in(const char *const barejid, const char *const msg, GDateTime *timestamp)
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{
if (prefs_get_boolean(PREF_CHLOG)) {
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const char *jid = connection_get_fulljid();
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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_IN_LOG, timestamp);
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} else if (strcmp(pref_pgp_log, "redact") == 0) {
_chat_log_chat(jidp->barejid, barejid, "[redacted]", PROF_IN_LOG, timestamp);
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}
prefs_free_string(pref_pgp_log);
jid_destroy(jidp);
}
}
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void
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chat_log_msg_in(const char *const barejid, const char *const msg, GDateTime *timestamp)
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{
if (prefs_get_boolean(PREF_CHLOG)) {
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const char *jid = connection_get_fulljid();
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Jid *jidp = jid_create(jid);
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_chat_log_chat(jidp->barejid, barejid, msg, PROF_IN_LOG, timestamp);
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jid_destroy(jidp);
}
}
static void
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_chat_log_chat(const char *const login, const char *const other, const char *const msg,
chat_log_direction_t direction, GDateTime *timestamp)
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{
struct dated_chat_log *dated_log = g_hash_table_lookup(logs, other);
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// no log for user
if (dated_log == NULL) {
dated_log = _create_log(other, login);
g_hash_table_insert(logs, strdup(other), dated_log);
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// log exists but needs rolling
} else if (_log_roll_needed(dated_log)) {
dated_log = _create_log(other, login);
g_hash_table_replace(logs, strdup(other), dated_log);
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}
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if (timestamp == NULL) {
timestamp = g_date_time_new_now_local();
} else {
g_date_time_ref(timestamp);
}
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gchar *date_fmt = g_date_time_format(timestamp, "%H:%M:%S");
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FILE *logp = fopen(dated_log->filename, "a");
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g_chmod(dated_log->filename, S_IRUSR | S_IWUSR);
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if (logp) {
if (direction == PROF_IN_LOG) {
if (strncmp(msg, "/me ", 4) == 0) {
fprintf(logp, "%s - *%s %s\n", date_fmt, other, msg + 4);
} else {
fprintf(logp, "%s - %s: %s\n", date_fmt, other, msg);
}
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} 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);
}
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}
fflush(logp);
int result = fclose(logp);
if (result == EOF) {
log_error("Error closing file %s, errno = %d", dated_log->filename, errno);
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}
}
g_free(date_fmt);
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g_date_time_unref(timestamp);
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}
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void
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groupchat_log_chat(const gchar *const login, const gchar *const room, const gchar *const nick, const gchar *const msg)
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{
struct dated_chat_log *dated_log = g_hash_table_lookup(groupchat_logs, room);
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// 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);
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// 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);
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}
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");
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g_chmod(dated_log->filename, S_IRUSR | S_IWUSR);
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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);
}
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fflush(logp);
int result = fclose(logp);
if (result == EOF) {
log_error("Error closing file %s, errno = %d", dated_log->filename, errno);
}
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}
g_free(date_fmt);
g_date_time_unref(dt);
}
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GSList*
chat_log_get_previous(const gchar *const login, const gchar *const recipient)
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{
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GSList *history = NULL;
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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");
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if (logp) {
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GString *header = g_string_new("");
g_string_append_printf(header, "%d/%d/%d:",
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g_date_time_get_day_of_month(log_date),
g_date_time_get_month(log_date),
g_date_time_get_year(log_date));
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history = g_slist_append(history, header->str);
g_string_free(header, FALSE);
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char *line;
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while ((line = file_getline(logp)) != NULL) {
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history = g_slist_append(history, line);
}
fclose(logp);
}
free(filename);
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GDateTime *next = g_date_time_add_days(log_date, 1);
g_date_time_unref(log_date);
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log_date = next;
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}
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g_date_time_unref(log_date);
g_date_time_unref(now);
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return history;
}
void
chat_log_close(void)
{
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g_hash_table_destroy(logs);
g_hash_table_destroy(groupchat_logs);
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g_date_time_unref(session_started);
}
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static struct dated_chat_log*
_create_log(const char *const other, const char *const login)
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{
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;
}
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static struct dated_chat_log*
_create_groupchat_log(const char * const room, const char *const login)
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{
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;
}
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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)
{
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if (dated_log) {
if (dated_log->filename) {
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g_free(dated_log->filename);
dated_log->filename = NULL;
}
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if (dated_log->date) {
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g_date_time_unref(dated_log->date);
dated_log->date = NULL;
}
free(dated_log);
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}
}
static
gboolean _key_equals(void *key1, void *key2)
{
gchar *str1 = (gchar *) key1;
gchar *str2 = (gchar *) key2;
return (g_strcmp0(str1, str2) == 0);
}
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static char*
_get_log_filename(const char *const other, const char *const login, GDateTime *dt, gboolean create)
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{
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char *chatlogs_dir = files_get_data_path(DIR_CHATLOGS);
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GString *log_file = g_string_new(chatlogs_dir);
free(chatlogs_dir);
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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);
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char *result = strdup(log_file->str);
g_string_free(log_file, TRUE);
return result;
}
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static char*
_get_groupchat_log_filename(const char *const room, const char *const login, GDateTime *dt, gboolean create)
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{
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char *chatlogs_dir = files_get_data_path(DIR_CHATLOGS);
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GString *log_file = g_string_new(chatlogs_dir);
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free(chatlogs_dir);
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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);
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char *result = strdup(log_file->str);
g_string_free(log_file, TRUE);
return result;
}
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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, "");
}
}
void
log_stderr_init(log_level_t level)
{
int rc;
int flags;
rc = pipe(stderr_pipe);
if (rc != 0)
goto err;
flags = fcntl(stderr_pipe[0], F_GETFL);
rc = fcntl(stderr_pipe[0], F_SETFL, flags | O_NONBLOCK);
if (rc != 0)
goto err_close;
close(STDERR_FILENO);
rc = dup2(stderr_pipe[1], STDERR_FILENO);
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));
}