From aa59b003a4d06a6f6c1cfcbd691d3dedb53acdd5 Mon Sep 17 00:00:00 2001 From: Christian Pointner Date: Thu, 19 Nov 2009 17:39:25 +0000 Subject: initial checkin diff --git a/AUTHORS b/AUTHORS new file mode 100644 index 0000000..980ce2f --- /dev/null +++ b/AUTHORS @@ -0,0 +1 @@ +Christian Pointner diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..9c435b6 --- /dev/null +++ b/LICENSE @@ -0,0 +1,694 @@ +/* + * rhdropbox + * + * Copyright (C) 2009 Christian Pointner + * + * This file is part of rhdropbox. + * + * rhdropbox 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 + * any later version. + * + * rhdropbox 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 rhdropbox. If not, see . + */ + GNU GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU General Public License is a free, copyleft license for +software and other kinds of works. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. By contrast, +the GNU General Public License is intended to guarantee your freedom to +share and change all versions of a program--to make sure it remains free +software for all its users. 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If not, see . + +Also add information on how to contact you by electronic and paper mail. + + If the program does terminal interaction, make it output a short +notice like this when it starts in an interactive mode: + + Copyright (C) + This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, your program's commands +might be different; for a GUI interface, you would use an "about box". + + You should also get your employer (if you work as a programmer) or school, +if any, to sign a "copyright disclaimer" for the program, if necessary. +For more information on this, and how to apply and follow the GNU GPL, see +. + + The GNU General Public License does not permit incorporating your program +into proprietary programs. If your program is a subroutine library, you +may consider it more useful to permit linking proprietary applications with +the library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. But first, please read +. diff --git a/Makefile b/Makefile new file mode 100644 index 0000000..4487192 --- /dev/null +++ b/Makefile @@ -0,0 +1,70 @@ +## +## rhdropbox +## +## Copyright (C) 2009 Christian Pointner +## +## This file is part of rhdropbox. +## +## rhdropbox 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 +## any later version. +## +## rhdropbox 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 rhdropbox. If not, see . +## + +ifneq ($(MAKECMDGOALS),distclean) +include include.mk +endif + +EXECUTABLE := rhdropbox + +OBJ := log.o \ + sig_handler.o \ + string_list.o \ + key_value_storage.o \ + utils.o \ + command_queue.o \ + client_list.o \ + options.o \ + rhdropbox.o + +SRC := $(OBJ:%.o=%.c) + +.PHONY: clean distclean + +all: $(EXECUTABLE) + +%.d: %.c + @set -e; rm -f $@; \ + $(CC) -MM $(CFLAGS) $< > $@.$$$$; \ + sed 's,\($*\)\.o[ :]*,\1.o $@ : ,g' < $@.$$$$ > $@; \ + rm -f $@.$$$$; echo '(re)building $@' + +ifneq ($(MAKECMDGOALS),distclean) +-include $(SRC:%.c=%.d) +endif + +$(EXECUTABLE): $(OBJ) + $(CC) $(OBJ) -o $@ $(LDFLAGS) + +%.o: %.c + $(CC) $(CFLAGS) -c $< + + +distclean: clean + find . -name *.o -exec rm -f {} \; + find . -name "*.\~*" -exec rm -rf {} \; + rm -f include.mk + +clean: + rm -f *.o + rm -f *.d + rm -f *.d.* + rm -f $(EXECUTABLE) diff --git a/client_list.c b/client_list.c new file mode 100644 index 0000000..5aea541 --- /dev/null +++ b/client_list.c @@ -0,0 +1,117 @@ +/* + * rhdropbox + * + * Copyright (C) 2009 Christian Pointner + * + * This file is part of rhdropbox. + * + * rhdropbox 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 + * any later version. + * + * rhdropbox 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 rhdropbox. If not, see . + */ + +#include + +#include "client_list.h" +#include "datatypes.h" + +client_t* client_get_last(client_t* first) +{ + if(!first) + return NULL; + + while(first->next) { + first = first->next; + } + + return first; +} + +int client_add(client_t** first, int fd) +{ + if(!first) + return -1; + + client_t* new_client = malloc(sizeof(client_t)); + if(!new_client) + return -2; + + new_client->fd = fd; + new_client->type = DEFAULT; + new_client->status_listener = 0; + new_client->request_listener = 0; + new_client->next = NULL; + new_client->buffer.offset = 0; + + if(!(*first)) { + *first = new_client; + return 0; + } + + client_get_last(*first)->next = new_client; + + return 0; +} + +void client_remove(client_t** first, int fd) +{ + if(!first || !(*first)) + return; + + client_t* deletee = *first; + if((*first)->fd == fd) { + *first = (*first)->next; + close(deletee->fd); + free(deletee); + return; + } + + client_t* prev = deletee; + deletee = deletee->next; + while(deletee) { + if(deletee->fd == fd) { + prev->next = deletee->next; + close(deletee->fd); + free(deletee); + return; + } + prev = deletee; + deletee = deletee->next; + } +} + +client_t* client_find(client_t* first, int fd) +{ + if(!first) + return NULL; + + while(first) { + if(first->fd == fd) + return first; + + first = first->next; + } + return NULL; +} + +void client_clear(client_t** first) +{ + if(!first || !(*first)) + return; + + while(*first) { + client_t* deletee = *first; + *first = (*first)->next; + close(deletee->fd); + free(deletee); + } +} diff --git a/client_list.h b/client_list.h new file mode 100644 index 0000000..5cc34ae --- /dev/null +++ b/client_list.h @@ -0,0 +1,41 @@ +/* + * rhdropbox + * + * Copyright (C) 2009 Christian Pointner + * + * This file is part of rhdropbox. + * + * rhdropbox 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 + * any later version. + * + * rhdropbox 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 rhdropbox. If not, see . + */ + +#ifndef RHDROPBOX_client_list_h_INCLUDED +#define RHDROPBOX_client_list_h_INCLUDED + +#include "datatypes.h" + +struct client_struct { + int fd; + int status_listener; + int request_listener; + struct client_struct* next; + read_buffer_t buffer; +}; +typedef struct client_struct client_t; + +int client_add(client_t** first, int fd); +void client_remove(client_t** first, int fd); +client_t* client_find(client_t* first, int fd); +void client_clear(client_t** first); + +#endif diff --git a/command_queue.c b/command_queue.c new file mode 100644 index 0000000..baec471 --- /dev/null +++ b/command_queue.c @@ -0,0 +1,118 @@ +/* + * door_daemon + * + * Copyright (C) 2009 Christian Pointner + * + * This file is part of door_daemon. + * + * door_daemon 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 + * any later version. + * + * door_daemon 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 door_daemon. If not, see . + */ + +#include +#include + +#include "command_queue.h" +#include "datatypes.h" + +cmd_t* cmd_get_last(cmd_t* first) +{ + if(!first) + return NULL; + + while(first->next) { + first = first->next; + } + + return first; +} + +int cmd_push(cmd_t** first, int fd, cmd_id_t cmd, const char* param) +{ + if(!first) + return -1; + + cmd_t* new_cmd = malloc(sizeof(cmd_t)); + if(!new_cmd) + return -2; + + new_cmd->fd = fd; + new_cmd->cmd = cmd; + if(param) { + new_cmd->param = strdup(param); + if(!new_cmd->param) { + free(new_cmd); + return -2; + } + } + else + new_cmd->param = NULL; + new_cmd->sent = 0; + new_cmd->tv_start.tv_sec = 0; + new_cmd->tv_start.tv_usec = 0; + new_cmd->next = NULL; + + if(!(*first)) { + *first = new_cmd; + return 0; + } + + cmd_get_last(*first)->next = new_cmd; + + return 0; +} + +void cmd_sent(cmd_t* cmd) +{ + if(!cmd) + return; + + cmd->sent = 1; + gettimeofday(&cmd->tv_start, NULL); +} + +int cmd_has_expired(cmd_t cmd) +{ + struct timeval now; + timerclear(&now); + gettimeofday(&now, NULL); + cmd.tv_start.tv_sec++; + + return timercmp(&cmd.tv_start, &now, <); +} + +void cmd_pop(cmd_t** first) +{ + if(!first || !(*first)) + return; + + cmd_t* deletee = *first; + *first = (*first)->next; + if(deletee->param) + free(deletee->param); + free(deletee); +} + +void cmd_clear(cmd_t** first) +{ + if(!first || !(*first)) + return; + + while(*first) { + cmd_t* deletee = *first; + *first = (*first)->next; + if(deletee->param) + free(deletee->param); + free(deletee); + } +} diff --git a/command_queue.h b/command_queue.h new file mode 100644 index 0000000..e364cd5 --- /dev/null +++ b/command_queue.h @@ -0,0 +1,46 @@ +/* + * door_daemon + * + * Copyright (C) 2009 Christian Pointner + * + * This file is part of door_daemon. + * + * door_daemon 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 + * any later version. + * + * door_daemon 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 door_daemon. If not, see . + */ + +#ifndef RHDROPBOX_command_queue_h_INCLUDED +#define RHDROPBOX_command_queue_h_INCLUDED + +#include + +enum cmd_id_enum { ADD, REMOVE, STATUS, LOG, LISTEN }; +typedef enum cmd_id_enum cmd_id_t; + +struct cmd_struct { + int fd; + cmd_id_t cmd; + char* param; + int sent; + struct timeval tv_start; + struct cmd_struct* next; +}; +typedef struct cmd_struct cmd_t; + +int cmd_push(cmd_t** first, int fd, cmd_id_t cmd, const char* param); +void cmd_sent(cmd_t* cmd); +int cmd_has_expired(cmd_t cmd); +void cmd_pop(cmd_t** first); +void cmd_clear(cmd_t** first); + +#endif diff --git a/configure b/configure new file mode 100755 index 0000000..1af8e01 --- /dev/null +++ b/configure @@ -0,0 +1,79 @@ +#!/bin/sh +# +# +# rhdropbox +# +# Copyright (C) 2009 Christian Pointner +# +# This file is part of rhdropbox. +# +# rhdropbox 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 +# any later version. +# +# rhdropbox 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 rhdropbox. If not, see . +# + +TARGET=`uname -s` + +CFLAGS='-g -O2' +LDFLAGS='-g -Wall -O2' + +print_usage() { + echo "configure --help print this" + echo " --target= build target i.e. Linux (default: autodetect)" +} + +for arg +do + case $arg in + --target=*) + TARGET=${arg#--target=} + ;; + --help) + print_usage + exit 0 + ;; + *) + echo "Unknown argument: $arg" + print_usage + exit 1 + ;; + esac +done + +rm -f include.mk +case $TARGET in + Linux) + echo "Linux specific build options" + ;; + OpenBSD|FreeBSD|NetBSD) + echo "BSD specific build options" + CFLAGS=$CFLAGS' -I/usr/local/include' + LDFLAGS=$LDFLAGS' -L/usr/local/lib' + ;; + *) + echo "Plattform not supported" + exit 1; + ;; +esac + +cat >> include.mk < + * + * This file is part of uAnytun. + * + * uAnytun 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 + * any later version. + * + * uAnytun 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 uAnytun. If not, see . + */ + +#ifndef UANYUTN_daemon_h_INCLUDED +#define UANYUTN_daemon_h_INCLUDED + +#include +#include +#include +#include +#include +#include +#include + +struct priv_info_struct { + struct passwd* pw_; + struct group* gr_; +}; +typedef struct priv_info_struct priv_info_t; + +int priv_init(priv_info_t* priv, const char* username, const char* groupname) +{ + if(!priv) + return -1; + + priv->pw_ = NULL; + priv->gr_ = NULL; + + priv->pw_ = getpwnam(username); + if(!priv->pw_) { + log_printf(ERROR, "unkown user %s", username); + return -1; + } + + if(groupname) + priv->gr_ = getgrnam(groupname); + else + priv->gr_ = getgrgid(priv->pw_->pw_gid); + + if(!priv->gr_) { + log_printf(ERROR, "unkown group %s", groupname); + return -1; + } + + return 0; +} + +int priv_drop(priv_info_t* priv) +{ + if(!priv || !priv->pw_ || !priv->gr_) { + log_printf(ERROR, "privileges not initialized properly"); + return -1; + } + + if(setgid(priv->gr_->gr_gid)) { + log_printf(ERROR, "setgid('%s') failed: %s", priv->gr_->gr_name, strerror(errno)); + return -1; + } + + gid_t gr_list[1]; + gr_list[0] = priv->gr_->gr_gid; + if(setgroups (1, gr_list)) { + log_printf(ERROR, "setgroups(['%s']) failed: %s", priv->gr_->gr_name, strerror(errno)); + return -1; + } + + if(setuid(priv->pw_->pw_uid)) { + log_printf(ERROR, "setuid('%s') failed: %s", priv->pw_->pw_name, strerror(errno)); + return -1; + } + + log_printf(NOTICE, "dropped privileges to %s:%s", priv->pw_->pw_name, priv->gr_->gr_name); + return 0; +} + + +int do_chroot(const char* chrootdir) +{ + if(getuid() != 0) { + log_printf(ERROR, "this programm has to be run as root in order to run in a chroot"); + return -1; + } + + if(chroot(chrootdir)) { + log_printf(ERROR, "can't chroot to %s: %s", chrootdir, strerror(errno)); + return -1; + } + log_printf(NOTICE, "we are in chroot jail (%s) now", chrootdir); + if(chdir("/")) { + log_printf(ERROR, "can't change to /: %s", strerror(errno)); + return -1; + } +} + +void daemonize() +{ + pid_t pid; + + pid = fork(); + if(pid < 0) { + log_printf(ERROR, "daemonizing failed at fork(): %s, exitting", strerror(errno)); + exit(-1); + } + if(pid) exit(0); + + umask(0); + + if(setsid() < 0) { + log_printf(ERROR, "daemonizing failed at setsid(): %s, exitting", strerror(errno)); + exit(-1); + } + + pid = fork(); + if(pid < 0) { + log_printf(ERROR, "daemonizing failed at fork(): %s, exitting", strerror(errno)); + exit(-1); + } + if(pid) exit(0); + + if ((chdir("/")) < 0) { + log_printf(ERROR, "daemonizing failed at chdir(): %s, exitting", strerror(errno)); + exit(-1); + } + + int fd; + for (fd=0;fd<=2;fd++) // close all file descriptors + close(fd); + fd = open("/dev/null",O_RDWR); // stdin + if(fd == -1) + log_printf(WARNING, "can't open stdin (chroot and no link to /dev/null?)"); + else { + if(dup(fd) == -1) // stdout + log_printf(WARNING, "can't open stdout"); + if(dup(fd) == -1) // stderr + log_printf(WARNING, "can't open stderr"); + } + umask(027); +} + +#endif + diff --git a/datatypes.h b/datatypes.h new file mode 100644 index 0000000..36d018b --- /dev/null +++ b/datatypes.h @@ -0,0 +1,49 @@ +/* + * rhdropbox + * + * Copyright (C) 2009 Christian Pointner + * + * This file is part of rhdropbox. + * + * rhdropbox 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 + * any later version. + * + * rhdropbox 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 rhdropbox. If not, see . + */ + +#ifndef RHDROPBOX_datatypes_h_INCLUDED +#define RHDROPBOX_datatypes_h_INCLUDED + +#include +#include + +typedef uint8_t u_int8_t; +typedef uint16_t u_int16_t; +typedef uint32_t u_int32_t; +typedef uint64_t u_int64_t; +/* typedef int8_t int8_t; */ +/* typedef int16_t int16_t; */ +/* typedef int32_t int32_t; */ +/* typedef int64_t int64_t; */ + +struct buffer_struct { + u_int32_t length_; + u_int8_t* buf_; +}; +typedef struct buffer_struct buffer_t; + +struct read_buffer_struct { + u_int32_t offset; + u_int8_t buf[100]; +}; +typedef struct read_buffer_struct read_buffer_t; + +#endif diff --git a/log.c b/log.c new file mode 100644 index 0000000..43a0a5a --- /dev/null +++ b/log.c @@ -0,0 +1,259 @@ +/* + * uAnytun + * + * uAnytun is a tiny implementation of SATP. Unlike Anytun which is a full + * featured implementation uAnytun has no support for multiple connections + * or synchronisation. It is a small single threaded implementation intended + * to act as a client on small platforms. + * The secure anycast tunneling protocol (satp) defines a protocol used + * for communication between any combination of unicast and anycast + * tunnel endpoints. It has less protocol overhead than IPSec in Tunnel + * mode and allows tunneling of every ETHER TYPE protocol (e.g. + * ethernet, ip, arp ...). satp directly includes cryptography and + * message authentication based on the methodes used by SRTP. It is + * intended to deliver a generic, scaleable and secure solution for + * tunneling and relaying of packets of any protocol. + * + * + * Copyright (C) 2007-2008 Christian Pointner + * + * This file is part of uAnytun. + * + * uAnytun 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 + * any later version. + * + * uAnytun 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 uAnytun. If not, see . + */ + +#include "datatypes.h" + +#include +#include +#include +#include + +#define SYSLOG_NAMES +#include + +#include "log.h" + +log_t stdlog; + +#include "log_targets.h" + +const char* log_prio_to_string(log_prio_t prio) +{ + switch(prio) { + case ERROR: return "ERROR"; + case WARNING: return "WARNING"; + case NOTICE: return "NOTICE"; + case INFO: return "INFO"; + case DEBUG: return "DEBUG"; + } + return "UNKNOWN"; +} + +log_target_type_t log_target_parse_type(const char* conf) +{ + if(!conf) + return TARGET_UNKNOWN; + + if(!strncmp(conf, "syslog", 6)) return TARGET_SYSLOG; + if(!strncmp(conf, "file", 4)) return TARGET_FILE; + if(!strncmp(conf, "stdout", 6)) return TARGET_STDOUT; + if(!strncmp(conf, "stderr", 6)) return TARGET_STDERR; + + return TARGET_UNKNOWN; +} + +int log_targets_target_exists(log_targets_t* targets, log_target_type_t type) +{ + if(!targets && !targets->first_) + return 0; + + log_target_t* tmp = targets->first_; + while(tmp) { + if(tmp->type_ == type) + return 1; + tmp = tmp->next_; + } + return 0; +} + +int log_targets_add(log_targets_t* targets, const char* conf) +{ + if(!targets) + return -1; + + log_target_t* new_target = NULL; + int duplicates_allowed = 0; + switch(log_target_parse_type(conf)) { + case TARGET_SYSLOG: new_target = log_target_syslog_new(); break; + case TARGET_FILE: new_target = log_target_file_new(); duplicates_allowed = 1; break; + case TARGET_STDOUT: new_target = log_target_stdout_new(); break; + case TARGET_STDERR: new_target = log_target_stderr_new(); break; + default: return -3; + } + if(!new_target) + return -2; + + if(!duplicates_allowed && log_targets_target_exists(targets, new_target->type_)) { + free(new_target); + return -4; + } + + const char* prioptr = strchr(conf, ':'); + if(!prioptr || prioptr[1] == 0) { + free(new_target); + return -1; + } + prioptr++; + if(!isdigit(prioptr[0]) || (prioptr[1] != 0 && prioptr[1] != ',')) { + free(new_target); + return -1; + } + new_target->max_prio_ = prioptr[0] - '0'; + if(new_target->max_prio_ > 0) + new_target->enabled_ = 1; + + if(new_target->init != NULL) { + const char* confptr = NULL; + if(prioptr[1] != 0) + confptr = prioptr+2; + + int ret = (*new_target->init)(new_target, confptr); + if(ret) { + free(new_target); + return ret; + } + } + + if(new_target->open != NULL) + (*new_target->open)(new_target); + + + if(!targets->first_) { + targets->first_ = new_target; + } + else { + log_target_t* tmp = targets->first_; + while(tmp->next_) + tmp = tmp->next_; + + tmp->next_ = new_target; + } + return 0; +} + +void log_targets_log(log_targets_t* targets, log_prio_t prio, const char* msg) +{ + if(!targets) + return; + + log_target_t* tmp = targets->first_; + while(tmp) { + if(tmp->log != NULL && tmp->enabled_ && tmp->max_prio_ >= prio) + (*tmp->log)(tmp, prio, msg); + + tmp = tmp->next_; + } +} + +void log_targets_clear(log_targets_t* targets) +{ + if(!targets) + return; + + while(targets->first_) { + log_target_t* tmp = targets->first_; + targets->first_ = tmp->next_; + if(tmp->close != NULL) + (*tmp->close)(tmp); + if(tmp->clear != NULL) + (*tmp->clear)(tmp); + free(tmp); + } +} + + +void log_init() +{ + stdlog.max_prio_ = 0; + stdlog.targets_.first_ = NULL; +} + +void log_close() +{ + log_targets_clear(&stdlog.targets_); +} + +void update_max_prio() +{ + log_target_t* tmp = stdlog.targets_.first_; + while(tmp) { + if(tmp->enabled_ && tmp->max_prio_ > stdlog.max_prio_) + stdlog.max_prio_ = tmp->max_prio_; + + tmp = tmp->next_; + } +} + +int log_add_target(const char* conf) +{ + if(!conf) + return -1; + + int ret = log_targets_add(&stdlog.targets_, conf); + if(!ret) update_max_prio(); + return ret; +} + +void log_printf(log_prio_t prio, const char* fmt, ...) +{ + if(stdlog.max_prio_ < prio) + return; + + static char msg[MSG_LENGTH_MAX]; + va_list args; + + va_start(args, fmt); + vsnprintf(msg, MSG_LENGTH_MAX, fmt, args); + va_end(args); + + log_targets_log(&stdlog.targets_, prio, msg); +} + +void log_print_hex_dump(log_prio_t prio, const u_int8_t* buf, u_int32_t len) +{ + if(stdlog.max_prio_ < prio) + return; + + static char msg[MSG_LENGTH_MAX]; + + if(!buf) { + snprintf(msg, MSG_LENGTH_MAX, "(NULL)"); + } + else { + u_int32_t i; + int offset = snprintf(msg, MSG_LENGTH_MAX, "dump(%d): ", len); + if(offset < 0) + return; + u_int8_t* ptr = &msg[offset]; + + for(i=0; i < len; i++) { + if(((i+1)*3) >= (MSG_LENGTH_MAX - offset)) + break; + snprintf(ptr, 3, "%02X ", buf[i]); + ptr+=3; + } + } + log_targets_log(&stdlog.targets_, prio, msg); +} diff --git a/log.h b/log.h new file mode 100644 index 0000000..513f506 --- /dev/null +++ b/log.h @@ -0,0 +1,90 @@ +/* + * uAnytun + * + * uAnytun is a tiny implementation of SATP. Unlike Anytun which is a full + * featured implementation uAnytun has no support for multiple connections + * or synchronisation. It is a small single threaded implementation intended + * to act as a client on small platforms. + * The secure anycast tunneling protocol (satp) defines a protocol used + * for communication between any combination of unicast and anycast + * tunnel endpoints. It has less protocol overhead than IPSec in Tunnel + * mode and allows tunneling of every ETHER TYPE protocol (e.g. + * ethernet, ip, arp ...). satp directly includes cryptography and + * message authentication based on the methodes used by SRTP. It is + * intended to deliver a generic, scaleable and secure solution for + * tunneling and relaying of packets of any protocol. + * + * + * Copyright (C) 2007-2008 Christian Pointner + * + * This file is part of uAnytun. + * + * uAnytun 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 + * any later version. + * + * uAnytun 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 uAnytun. If not, see . + */ + +#ifndef UANYUTN_log_h_INCLUDED +#define UANYUTN_log_h_INCLUDED + +#define MSG_LENGTH_MAX 150 + +enum log_prio_enum { ERROR = 1, WARNING = 2, NOTICE = 3, + INFO = 4, DEBUG = 5 }; +typedef enum log_prio_enum log_prio_t; + +const char* log_prio_to_string(log_prio_t prio); + +enum log_target_type_enum { TARGET_SYSLOG , TARGET_STDOUT, TARGET_STDERR, TARGET_FILE , TARGET_UNKNOWN }; +typedef enum log_target_type_enum log_target_type_t; + +struct log_target_struct { + log_target_type_t type_; + int (*init)(struct log_target_struct* self, const char* conf); + void (*open)(struct log_target_struct* self); + void (*log)(struct log_target_struct* self, log_prio_t prio, const char* msg); + void (*close)(struct log_target_struct* self); + void (*clear)(struct log_target_struct* self); + int opened_; + int enabled_; + log_prio_t max_prio_; + void* param_; + struct log_target_struct* next_; +}; +typedef struct log_target_struct log_target_t; + + +struct log_targets_struct { + log_target_t* first_; +}; +typedef struct log_targets_struct log_targets_t; + +int log_targets_target_exists(log_targets_t* targets, log_target_type_t type); +int log_targets_add(log_targets_t* targets, const char* conf); +void log_targets_log(log_targets_t* targets, log_prio_t prio, const char* msg); +void log_targets_clear(log_targets_t* targets); + + +struct log_struct { + log_prio_t max_prio_; + log_targets_t targets_; +}; +typedef struct log_struct log_t; + +void log_init(); +void log_close(); +void update_max_prio(); +int log_add_target(const char* conf); +void log_printf(log_prio_t prio, const char* fmt, ...); +void log_print_hex_dump(log_prio_t prio, const u_int8_t* buf, u_int32_t len); + +#endif diff --git a/log_targets.h b/log_targets.h new file mode 100644 index 0000000..563d04c --- /dev/null +++ b/log_targets.h @@ -0,0 +1,363 @@ +/* + * uAnytun + * + * uAnytun is a tiny implementation of SATP. Unlike Anytun which is a full + * featured implementation uAnytun has no support for multiple connections + * or synchronisation. It is a small single threaded implementation intended + * to act as a client on small platforms. + * The secure anycast tunneling protocol (satp) defines a protocol used + * for communication between any combination of unicast and anycast + * tunnel endpoints. It has less protocol overhead than IPSec in Tunnel + * mode and allows tunneling of every ETHER TYPE protocol (e.g. + * ethernet, ip, arp ...). satp directly includes cryptography and + * message authentication based on the methodes used by SRTP. It is + * intended to deliver a generic, scaleable and secure solution for + * tunneling and relaying of packets of any protocol. + * + * + * Copyright (C) 2007-2008 Christian Pointner + * + * This file is part of uAnytun. + * + * uAnytun 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 + * any later version. + * + * uAnytun 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 uAnytun. If not, see . + */ + +#ifndef UANYUTN_log_targets_h_INCLUDED +#define UANYUTN_log_targets_h_INCLUDED + +#include + +static char* get_time_formatted() +{ + char* time_string; + time_t t = time(NULL); + if(t < 0) + time_string = "