267 lines
6.2 KiB
C
267 lines
6.2 KiB
C
/*
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* uhub - A tiny ADC p2p connection hub
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* Copyright (C) 2007-2014, Jan Vidar Krey
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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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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*
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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, see <https://www.gnu.org/licenses/>.
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*
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*/
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#include "system.h"
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#include "adc/adcconst.h"
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#include "adc/sid.h"
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#include "util/memory.h"
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#include "network/ipcalc.h"
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#include "plugin_api/handle.h"
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#include "util/misc.h"
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#include "util/config_token.h"
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#ifndef WIN32
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#include <syslog.h>
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#endif
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struct ip_addr_encap;
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struct log_data
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{
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enum {
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mode_file,
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mode_syslog
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} logmode;
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char* logfile;
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int fd;
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};
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static void reset(struct log_data* data)
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{
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/* set defaults */
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data->logmode = mode_file;
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data->logfile = NULL;
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data->fd = -1;
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}
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static void set_error_message(struct plugin_handle* plugin, const char* msg)
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{
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plugin->error_msg = msg;
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}
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static int log_open_file(struct plugin_handle* plugin, struct log_data* data)
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{
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int flags = O_CREAT | O_APPEND | O_WRONLY;
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data->fd = open(data->logfile, flags, 0664);
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return (data->fd != -1);
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}
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#ifndef WIN32
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static int log_open_syslog(struct plugin_handle* plugin)
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{
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openlog("uhub", 0, LOG_USER);
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return 1;
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}
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#endif
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static struct log_data* parse_config(const char* line, struct plugin_handle* plugin)
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{
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struct log_data* data = (struct log_data*) hub_malloc(sizeof(struct log_data));
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struct cfg_tokens* tokens = cfg_tokenize(line);
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char* token = cfg_token_get_first(tokens);
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if (!data)
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return 0;
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reset(data);
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while (token)
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{
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struct cfg_settings* setting = cfg_settings_split(token);
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if (!setting)
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{
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set_error_message(plugin, "Unable to parse startup parameters");
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cfg_tokens_free(tokens);
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hub_free(data);
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return 0;
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}
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if (strcmp(cfg_settings_get_key(setting), "file") == 0)
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{
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data->logfile = strdup(cfg_settings_get_value(setting));
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data->logmode = mode_file;
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}
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#ifndef WIN32
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else if (strcmp(cfg_settings_get_key(setting), "syslog") == 0)
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{
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int use_syslog = 0;
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if (string_to_boolean(cfg_settings_get_value(setting), &use_syslog))
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{
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data->logmode = (use_syslog) ? mode_syslog : mode_file;
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}
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}
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#endif
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else
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{
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set_error_message(plugin, "Unknown startup parameters given");
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cfg_tokens_free(tokens);
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cfg_settings_free(setting);
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hub_free(data);
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return 0;
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}
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cfg_settings_free(setting);
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token = cfg_token_get_next(tokens);
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}
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cfg_tokens_free(tokens);
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if (data->logmode == mode_file)
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{
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if ((data->logmode == mode_file && !data->logfile))
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{
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set_error_message(plugin, "No log file is given, use file=<path>");
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hub_free(data);
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return 0;
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}
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if (!log_open_file(plugin, data))
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{
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hub_free(data->logfile);
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hub_free(data);
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set_error_message(plugin, "Unable to open log file");
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return 0;
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}
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}
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#ifndef WIN32
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else
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{
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if (!log_open_syslog(plugin))
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{
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hub_free(data->logfile);
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hub_free(data);
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set_error_message(plugin, "Unable to open syslog");
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return 0;
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}
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}
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#endif
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return data;
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}
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static void log_close(struct log_data* data)
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{
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if (data->logmode == mode_file)
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{
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hub_free(data->logfile);
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close(data->fd);
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}
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#ifndef WIN32
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else
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{
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closelog();
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}
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#endif
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hub_free(data);
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}
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static void log_message(struct log_data* data, const char *format, ...)
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{
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static char logmsg[1024];
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struct tm *tmp;
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time_t t;
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va_list args;
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ssize_t size = 0;
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if (data->logmode == mode_file)
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{
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t = time(NULL);
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tmp = localtime(&t);
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strftime(logmsg, 32, "%Y-%m-%d %H:%M:%S ", tmp);
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va_start(args, format);
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size = vsnprintf(logmsg + 20, 1004, format, args);
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va_end(args);
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if (write(data->fd, logmsg, size + 20) < (size+20))
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{
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fprintf(stderr, "Unable to write full log. Error=%d: %s\n", errno, strerror(errno));
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}
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else
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{
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#ifdef WIN32
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_commit(data->fd);
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#else
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#if defined _POSIX_SYNCHRONIZED_IO && _POSIX_SYNCHRONIZED_IO > 0
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fdatasync(data->fd);
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#else
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fsync(data->fd);
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#endif
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#endif
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}
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}
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#ifndef WIN32
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else
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{
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va_start(args, format);
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vsyslog(LOG_INFO, format, args);
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va_end(args);
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}
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#endif
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}
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static void log_user_login(struct plugin_handle* plugin, struct plugin_user* user)
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{
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const char* cred = auth_cred_to_string(user->credentials);
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const char* addr = ip_convert_to_string(&user->addr);
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log_message(plugin->ptr, "LoginOK %s/%s %s \"%s\" (%s) \"%s\"\n", sid_to_string(user->sid), user->cid, addr, user->nick, cred, user->user_agent);
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}
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static void log_user_login_error(struct plugin_handle* plugin, struct plugin_user* user, const char* reason)
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{
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const char* addr = ip_convert_to_string(&user->addr);
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log_message(plugin->ptr, "LoginError %s/%s %s \"%s\" (%s) \"%s\"\n", sid_to_string(user->sid), user->cid, addr, user->nick, reason, user->user_agent);
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}
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static void log_user_logout(struct plugin_handle* plugin, struct plugin_user* user, const char* reason)
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{
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const char* addr = ip_convert_to_string(&user->addr);
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log_message(plugin->ptr, "Logout %s/%s %s \"%s\" (%s) \"%s\"\n", sid_to_string(user->sid), user->cid, addr, user->nick, reason, user->user_agent);
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}
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static void log_change_nick(struct plugin_handle* plugin, struct plugin_user* user, const char* new_nick)
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{
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const char* addr = ip_convert_to_string(&user->addr);
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log_message(plugin->ptr, "NickChange %s/%s %s \"%s\" -> \"%s\"\n", sid_to_string(user->sid), user->cid, addr, user->nick, new_nick);
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}
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int plugin_register(struct plugin_handle* plugin, const char* config)
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{
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PLUGIN_INITIALIZE(plugin, "Logging plugin", "1.0", "Logs users entering and leaving the hub.");
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plugin->funcs.on_user_login = log_user_login;
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plugin->funcs.on_user_login_error = log_user_login_error;
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plugin->funcs.on_user_logout = log_user_logout;
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plugin->funcs.on_user_nick_change = log_change_nick;
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plugin->ptr = parse_config(config, plugin);
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if (!plugin->ptr)
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return -1;
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return 0;
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}
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int plugin_unregister(struct plugin_handle* plugin)
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{
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/* No need to do anything! */
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log_close(plugin->ptr);
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return 0;
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}
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