From 6b4a2d6f1820360682d46b44222928280baa8145 Mon Sep 17 00:00:00 2001 From: Olaf Rempel Date: Wed, 11 Apr 2007 19:36:53 +0200 Subject: [PATCH] initial --- .gitignore | 5 + Makefile | 20 ++++ configfile.c | 217 +++++++++++++++++++++++++++++++++++++++ configfile.h | 15 +++ irclogbot.c | 244 ++++++++++++++++++++++++++++++++++++++++++++ irclogbot.conf | 12 +++ list.h | 268 +++++++++++++++++++++++++++++++++++++++++++++++++ logging.c | 102 +++++++++++++++++++ logging.h | 19 ++++ 9 files changed, 902 insertions(+) create mode 100644 .gitignore create mode 100644 Makefile create mode 100644 configfile.c create mode 100644 configfile.h create mode 100644 irclogbot.c create mode 100644 irclogbot.conf create mode 100644 list.h create mode 100644 logging.c create mode 100644 logging.h diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..410d60d --- /dev/null +++ b/.gitignore @@ -0,0 +1,5 @@ +libircclient +*.o +*.d +irclogbot +irclogbot.log diff --git a/Makefile b/Makefile new file mode 100644 index 0000000..0e6ea45 --- /dev/null +++ b/Makefile @@ -0,0 +1,20 @@ +CFLAGS := -O2 -pipe -Wall + +OBJS := configfile.o logging.o + +all: irclogbot + +irclogbot: $(OBJS) irclogbot.o + $(CC) $(CFLAGS) -o $@ $^ libircclient/src/libircclient.a + +%.o: %.c + $(CC) $(CFLAGS) -c $< -o $@ + +%.d: %.c + $(CC) $(CFLAGS) -MM -c $< -o $@ + +clean: + rm -f irclogbot *.d *.o *.log + +DEPS := $(wildcard *.c) +-include $(DEPS:.c=.d) diff --git a/configfile.c b/configfile.c new file mode 100644 index 0000000..1314bb3 --- /dev/null +++ b/configfile.c @@ -0,0 +1,217 @@ +/*************************************************************************** + * Copyright (C) 06/2006 by Olaf Rempel * + * razzor@kopf-tisch.de * + * * + * This program 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 2 of the License, or * + * (at your option) any later version. * + * * + * This program 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 this program; if not, write to the * + * Free Software Foundation, Inc., * + * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * + ***************************************************************************/ +#include +#include +#include +#include + +#include +#include +#include +#include + +#include "configfile.h" +#include "list.h" +#include "logging.h" + +#define BUFSIZE 1024 + +struct conf_section { + struct list_head list; + struct list_head tupel_list; + const char *name; +}; + +struct conf_tupel { + struct list_head list; + const char *option; + const char *parameter; +}; + +static LIST_HEAD(config_list); + +static struct conf_section * config_add_section(const char *name) +{ + struct conf_section *section; + section = malloc(sizeof(struct conf_section) + strlen(name)); + if (section == NULL) + return NULL; + + INIT_LIST_HEAD(§ion->list); + INIT_LIST_HEAD(§ion->tupel_list); + + section->name = strdup(name); + if (section->name == NULL) { + free(section); + return NULL; + } + + list_add_tail(§ion->list, &config_list); + return section; +} + +static int config_add_tupel(struct conf_section *section, const char *option, const char *parameter) +{ + struct conf_tupel *tupel = malloc(sizeof(struct conf_tupel)); + if (tupel == NULL) + return -1; + + INIT_LIST_HEAD(&tupel->list); + tupel->option = strdup(option); + tupel->parameter = strdup(parameter); + + if (tupel->option == NULL || tupel->parameter == NULL) { + free(tupel); + return -1; + } + + list_add_tail(&tupel->list, §ion->tupel_list); + return 0; +} + +int config_parse(const char *config) +{ + FILE *fz = fopen(config, "r"); + if (fz == NULL) { + log_print(LOG_ERROR, "config_parse(): %s", config); + return -1; + } + + char *line = malloc(BUFSIZE); + if (line == NULL) { + log_print(LOG_ERROR, "config_parse(): out of memory"); + fclose(fz); + return -1; + } + + int linenum = 0; + struct conf_section *section = NULL; + while (fgets(line, BUFSIZE, fz) != NULL) { + linenum++; + + if (line[0] == '#' || line[0] <= ' ') { + continue; + + } else if (line[0] == '[') { + char *tok = strtok(line +1, " ]\n"); + + if (tok == NULL || (section = config_add_section(tok)) == NULL) { + log_print(LOG_WARN, "config_parse(): invalid section in row %d", linenum); + free(line); + fclose(fz); + return -1; + } + continue; + + } else if (section == NULL) { + log_print(LOG_WARN, "config_parse(): missing section in row %d", linenum); + free(line); + fclose(fz); + return -1; + } + + char *tok = strtok(line, " \n"); + if (tok != NULL) { + char *tok2; + while ((tok2 = strtok(NULL, " \n"))) { + if (config_add_tupel(section, tok, tok2) != 0) + log_print(LOG_WARN, "config_parse(): invalid row %d", linenum); + } + } + } + + fclose(fz); + free(line); + return 0; +} + +void config_free(void) +{ + struct conf_section *section, *section_tmp; + struct conf_tupel *tupel, *tupel_tmp; + + list_for_each_entry_safe(section, section_tmp, &config_list, list) { + list_for_each_entry_safe(tupel, tupel_tmp, §ion->tupel_list, list) { + list_del(&tupel->list); + free((char *)tupel->option); + free((char *)tupel->parameter); + free(tupel); + } + list_del(§ion->list); + free(section); + } +} + +static struct conf_section * config_get_section(const char *name) +{ + struct conf_section *section; + + list_for_each_entry(section, &config_list, list) { + if (!strcmp(section->name, name)) + return section; + } + return NULL; +} + +const char * config_get_string(const char *section_str, const char *option, const char *def) +{ + struct conf_section *section = config_get_section(section_str); + if (section != NULL) { + struct conf_tupel *tupel; + list_for_each_entry(tupel, §ion->tupel_list, list) { + if (!strcmp(tupel->option, option)) + return tupel->parameter; + } + } + + if (def != NULL) + log_print(LOG_WARN, "config [%s:%s] not found, using default: '%s'", + section_str, option, def); + return def; +} + +int config_get_int(const char *section, const char *option, int def) +{ + const char *ret = config_get_string(section, option, NULL); + if (ret == NULL) { + log_print(LOG_WARN, "config [%s:%s] not found, using default: '%d'", + section, option, def); + return def; + } + return atoi(ret); +} + +int config_get_strings(const char *section_str, const char *option, + int (*callback)(const char *value, void *privdata), + void *privdata) +{ + struct conf_section *section = config_get_section(section_str); + if (section == NULL) + return -1; + + int cnt = 0; + struct conf_tupel *tupel; + list_for_each_entry(tupel, §ion->tupel_list, list) { + if (!strcmp(tupel->option, option)) + if (callback(tupel->parameter, privdata) == 0) + cnt++; + } + return cnt; +} diff --git a/configfile.h b/configfile.h new file mode 100644 index 0000000..9a2b669 --- /dev/null +++ b/configfile.h @@ -0,0 +1,15 @@ +#ifndef _CONFIG_H_ +#define _CONFIG_H_ + +int config_parse(const char *config); +void config_free(void); + +const char * config_get_string(const char *section_str, const char *option, const char *def); + +int config_get_int(const char *section, const char *option, int def); + +int config_get_strings(const char *section_str, const char *option, + int (*callback)(const char *value, void *privdata), + void *privdata); + +#endif /* _CONFIG_H_ */ diff --git a/irclogbot.c b/irclogbot.c new file mode 100644 index 0000000..37147ce --- /dev/null +++ b/irclogbot.c @@ -0,0 +1,244 @@ +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include + +#include "libircclient/include/libircclient.h" + +#include "configfile.h" +#include "list.h" +#include "logging.h" + +#define DEFAULT_CONFIG "irclogbot.conf" +#define DEFAULT_LOGFILE "irclogbot.log" + +static struct option opts[] = { + {"config", 1, 0, 'c'}, + {"debug", 0, 0, 'd'}, + {"help", 0, 0, 'h'}, + {0, 0, 0, 0} +}; + +struct irc_client { + struct list_head list; + + irc_session_t *session; + const char *server; + const char *nickname; + const char *channel; + const char *channelkey; + + struct in_addr addr; +}; + +static LIST_HEAD(client_list); +static irc_callbacks_t irc_cbs; + +static int add_client(const char *parameter, void *privdata) +{ + struct irc_client *entry = malloc(sizeof(struct irc_client)); + if (entry == NULL) { + log_print(LOG_ERROR, "add_client(): out of memory"); + return -1; + } + + if (inet_pton(AF_INET, parameter, &entry->addr) <= 0) { + log_print(LOG_ERROR, "add_client(): inet_pton()"); + free(entry); + return -1; + } + + const char *defserver = config_get_string("global", "server", NULL); + entry->server = config_get_string(parameter, "server", defserver); + if (entry->server == NULL) { + log_print(LOG_ERROR, "add_client(): client %s: no server given", parameter); + free(entry); + return -1; + } + + const char *defchannel = config_get_string("global", "channel", NULL); + entry->channel = config_get_string(parameter, "channel", defchannel); + if (entry->channel == NULL) { + log_print(LOG_ERROR, "add_client(): client %s: no channel given", parameter); + free(entry); + return -1; + } + + const char *defchannelkey = config_get_string("global", "channelkey", NULL); + entry->channelkey = config_get_string(parameter, "channelkey", defchannelkey); + + entry->nickname = config_get_string(parameter, "nickname", NULL); + if (entry->nickname == NULL) { + log_print(LOG_ERROR, "add_client(): client %s: no nickname given", parameter); + free(entry); + return -1; + } + + entry->session = irc_create_session(&irc_cbs); + if (entry->session == NULL) { + log_print(LOG_ERROR, "add_client(): irc_create_session()"); + free(entry); + return -1; + } + + irc_set_ctx(entry->session, entry); + irc_option_set(entry->session, LIBIRC_OPTION_STRIPNICKS); + + int ret = irc_connect(entry->session, entry->server, 6667, NULL, entry->nickname, NULL, NULL); + if (ret != 0) { + log_print(LOG_ERROR, "add_client(): irc_connect(): %s", irc_strerror(irc_errno(entry->session))); + irc_destroy_session(entry->session); + free(entry); + return -1; + } + + /* HACK: irc_connect() sets errno */ + errno = 0; + + log_print(LOG_DEBUG, "added client %s (server: %s chan: %s nickname: %s)", + parameter, entry->server, entry->channel, entry->nickname); + + list_add(&entry->list, &client_list); + return 0; +} + +static void event_connect(irc_session_t *session, const char *event, const char *origin, const char **params, unsigned int count) +{ + struct irc_client *entry = (struct irc_client *) irc_get_ctx(session); + irc_cmd_join(session, entry->channel, entry->channelkey); +} + +static void event_join(irc_session_t *session, const char *event, const char *origin, const char **params, unsigned int count) +{ + struct irc_client *entry = (struct irc_client *) irc_get_ctx(session); + irc_cmd_user_mode(session, "+i"); + + char buf[32] = { "forwarding from " }; + inet_ntop(AF_INET, &entry->addr, buf +16, 16); + + irc_cmd_msg(session, params[0], buf); +} + +static void event_numeric(irc_session_t *session, unsigned int event, const char *origin, const char **params, unsigned int count) +{ + if (event < 400) + return; + + log_print(LOG_INFO, "EVENT %d: %s: %s %s %s %s", + event, (origin ? origin : "unknown"), params[0], + count > 1 ? params[1] : "", + count > 2 ? params[2] : "", + count > 3 ? params[3] : ""); +} + +int main(int argc, char *argv[]) +{ + char *config = DEFAULT_CONFIG; + int code, arg = 0, debug = 0; + + do { + code = getopt_long(argc, argv, "c:dh", opts, &arg); + + switch (code) { + case 'c': /* config */ + config = optarg; + break; + + case 'd': /* debug */ + debug = 1; + break; + + case 'h': /* help */ + printf("Usage: ctstat [options]\n" + "Options: \n" + " --config -c configfile use this configfile\n" + " --debug -d do not fork and log to stderr\n" + " --help -h this help\n" + "\n"); + exit(0); + break; + + case '?': /* error */ + exit(-1); + break; + + default: /* unknown / all options parsed */ + break; + } + } while (code != -1); + + /* parse config file */ + if (config_parse(config)) + exit(1); + + int sock = socket(PF_INET, SOCK_DGRAM, 0); + if (sock < 0) { + log_print(LOG_ERROR, "socket()"); + return -1; + } + + struct sockaddr_in addr = { + .sin_family = AF_INET, + .sin_port = htons(514), + .sin_addr.s_addr = INADDR_ANY, + }; + + if (bind(sock, (struct sockaddr *)&addr, sizeof(addr)) < 0) { + log_print(LOG_ERROR, "bind()"); + return -1; + } + + irc_cbs.event_connect = event_connect; + irc_cbs.event_join = event_join; + irc_cbs.event_numeric = event_numeric; + + int cnt = config_get_strings("global", "client", add_client, NULL); + if (cnt == 0) { + log_print(LOG_ERROR, "no clients defined"); + close(sock); + exit(1); + } + + char buf[1500]; + while (1) { + fd_set rd_fds, wr_fds; + FD_ZERO(&rd_fds); + FD_ZERO(&wr_fds); + + FD_SET(sock, &rd_fds); + + int maxfd = sock; + struct irc_client *entry; + list_for_each_entry(entry, &client_list, list) { + int ret = irc_add_select_descriptors(entry->session, &rd_fds, &wr_fds, &maxfd); + if (ret != 0) + log_print(LOG_WARN, "irc_add_select_descriptors(): %s", irc_strerror(irc_errno(entry->session))); + } + + select(maxfd +1, &rd_fds, &wr_fds, NULL, NULL); + + int len = 0; + if (FD_ISSET(sock, &rd_fds)) { + unsigned int i = sizeof(addr); + len = recvfrom(sock, buf, sizeof(buf), 0, (struct sockaddr *)&addr, &i); + } + + list_for_each_entry(entry, &client_list, list) { + if (len > 0 && (entry->addr.s_addr == addr.sin_addr.s_addr)) + irc_cmd_msg(entry->session, entry->channel, buf); + + int ret = irc_process_select_descriptors(entry->session, &rd_fds, &wr_fds); + if (ret != 0) + log_print(LOG_WARN, "irc_process_select_descriptors(): %s", irc_strerror(irc_errno(entry->session))); + } + } + return 0; +} diff --git a/irclogbot.conf b/irclogbot.conf new file mode 100644 index 0000000..9eb1a42 --- /dev/null +++ b/irclogbot.conf @@ -0,0 +1,12 @@ +[global] +server irc.quakenet.org +channel #logtest + +client 127.0.0.1 +client 10.10.250.133 + +[127.0.0.1] +nickname logtest1 + +[10.10.250.133] +nickname logtest2 diff --git a/list.h b/list.h new file mode 100644 index 0000000..61f8d93 --- /dev/null +++ b/list.h @@ -0,0 +1,268 @@ +#ifndef _LIST_H_ +#define _LIST_H_ + +/* + * stolen from linux kernel 2.6.11 (http://kernel.org/) + * linux/include/linux/stddef.h (offsetoff) + * linux/include/linux/kernel.h (container_of) + * linux/include/linux/list.h (*list*) + * linux/include/linux/netfilter_ipv4/listhelp.h (LIST_FIND) + * + * modified by Olaf Rempel + */ +#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER) + +#define container_of(ptr, type, member) ({ \ + const typeof( ((type *)0)->member ) *__mptr = (ptr); \ + (type *)( (char *)__mptr - offsetof(type,member) );}) + +struct list_head { + struct list_head *next, *prev; +}; + +#define LIST_HEAD_INIT(name) { &(name), &(name) } + +#define LIST_HEAD(name) \ + struct list_head name = LIST_HEAD_INIT(name) + +#define INIT_LIST_HEAD(ptr) do { \ + (ptr)->next = (ptr); (ptr)->prev = (ptr); \ +} while (0) + +/* + * Insert a new entry between two known consecutive entries. + * + * This is only for internal list manipulation where we know + * the prev/next entries already! + */ +static inline void __list_add(struct list_head *new, + struct list_head *prev, + struct list_head *next) +{ + next->prev = new; + new->next = next; + new->prev = prev; + prev->next = new; +} + +/* + * list_add - add a new entry + * @new: new entry to be added + * @head: list head to add it after + * + * Insert a new entry after the specified head. + * This is good for implementing stacks. + */ +static inline void list_add(struct list_head *new, struct list_head *head) +{ + __list_add(new, head, head->next); +} + +/* + * list_add_tail - add a new entry + * @new: new entry to be added + * @head: list head to add it before + * + * Insert a new entry before the specified head. + * This is useful for implementing queues. + */ +static inline void list_add_tail(struct list_head *new, struct list_head *head) +{ + __list_add(new, head->prev, head); +} + +/* + * Delete a list entry by making the prev/next entries + * point to each other. + * + * This is only for internal list manipulation where we know + * the prev/next entries already! + */ +static inline void __list_del(struct list_head * prev, struct list_head * next) +{ + next->prev = prev; + prev->next = next; +} + +/* + * list_del - deletes entry from list. + * @entry: the element to delete from the list. + * Note: list_empty on entry does not return true after this, the entry is + * in an undefined state. + */ +static inline void list_del(struct list_head *entry) +{ + __list_del(entry->prev, entry->next); + entry->next = NULL; + entry->prev = NULL; +} + +/* + * list_del_init - deletes entry from list and reinitialize it. + * entry: the element to delete from the list. + */ +static inline void list_del_init(struct list_head *entry) +{ + __list_del(entry->prev, entry->next); + INIT_LIST_HEAD(entry); +} + +/* + * list_move - delete from one list and add as another's head + * @list: the entry to move + * @head: the head that will precede our entry + */ +static inline void list_move(struct list_head *list, struct list_head *head) +{ + __list_del(list->prev, list->next); + list_add(list, head); +} + +/* + * list_move_tail - delete from one list and add as another's tail + * @list: the entry to move + * @head: the head that will follow our entry + */ +static inline void list_move_tail(struct list_head *list, + struct list_head *head) +{ + __list_del(list->prev, list->next); + list_add_tail(list, head); +} + +/* + * list_empty - tests whether a list is empty + * @head: the list to test. + */ +static inline int list_empty(const struct list_head *head) +{ + return head->next == head; +} + +static inline void __list_splice(struct list_head *list, + struct list_head *head) +{ + struct list_head *first = list->next; + struct list_head *last = list->prev; + struct list_head *at = head->next; + + first->prev = head; + head->next = first; + + last->next = at; + at->prev = last; +} + +/* + * list_splice - join two lists + * @list: the new list to add. + * @head: the place to add it in the first list. + */ +static inline void list_splice(struct list_head *list, struct list_head *head) +{ + if (!list_empty(list)) + __list_splice(list, head); +} + +/* + * list_splice_init - join two lists and reinitialise the emptied list. + * @list: the new list to add. + * @head: the place to add it in the first list. + * + * The list at @list is reinitialised + */ +static inline void list_splice_init(struct list_head *list, + struct list_head *head) +{ + if (!list_empty(list)) { + __list_splice(list, head); + INIT_LIST_HEAD(list); + } +} + +/* + * list_entry - get the struct for this entry + * @ptr: the &struct list_head pointer. + * @type: the type of the struct this is embedded in. + * @member: the name of the list_struct within the struct. + */ +#define list_entry(ptr, type, member) \ + container_of(ptr, type, member) + +/* + * list_for_each - iterate over a list + * @pos: the &struct list_head to use as a loop counter. + * @head: the head for your list. + */ +#define list_for_each(pos, head) \ + for (pos = (head)->next; pos != (head); pos = pos->next) + +/* + * list_for_each_prev - iterate over a list backwards + * @pos: the &struct list_head to use as a loop counter. + * @head: the head for your list. + */ +#define list_for_each_prev(pos, head) \ + for (pos = (head)->prev; pos != (head); pos = pos->prev) + +/* + * list_for_each_safe - iterate over a list safe against removal of list entry + * @pos: the &struct list_head to use as a loop counter. + * @n: another &struct list_head to use as temporary storage + * @head: the head for your list. + */ +#define list_for_each_safe(pos, n, head) \ + for (pos = (head)->next, n = pos->next; pos != (head); \ + pos = n, n = pos->next) + +/* + * list_for_each_entry - iterate over list of given type + * @pos: the type * to use as a loop counter. + * @head: the head for your list. + * @member: the name of the list_struct within the struct. + */ +#define list_for_each_entry(pos, head, member) \ + for (pos = list_entry((head)->next, typeof(*pos), member); \ + &pos->member != (head); \ + pos = list_entry(pos->member.next, typeof(*pos), member)) + +/* + * list_for_each_entry_reverse - iterate backwards over list of given type. + * @pos: the type * to use as a loop counter. + * @head: the head for your list. + * @member: the name of the list_struct within the struct. + */ +#define list_for_each_entry_reverse(pos, head, member) \ + for (pos = list_entry((head)->prev, typeof(*pos), member); \ + &pos->member != (head); \ + pos = list_entry(pos->member.prev, typeof(*pos), member)) + +/* + * list_for_each_entry_safe - iterate over list of given type safe against removal of list entry + * @pos: the type * to use as a loop counter. + * @n: another type * to use as temporary storage + * @head: the head for your list. + * @member: the name of the list_struct within the struct. + */ +#define list_for_each_entry_safe(pos, n, head, member) \ + for (pos = list_entry((head)->next, typeof(*pos), member), \ + n = list_entry(pos->member.next, typeof(*pos), member); \ + &pos->member != (head); \ + pos = n, n = list_entry(n->member.next, typeof(*n), member)) + + +/* Return pointer to first true entry, if any, or NULL. A macro + required to allow inlining of cmpfn. */ +#define LIST_FIND(head, cmpfn, type, args...) \ +({ \ + const struct list_head *__i, *__j = NULL; \ + \ + list_for_each(__i, (head)) \ + if (cmpfn((const type)__i , ## args)) { \ + __j = __i; \ + break; \ + } \ + (type)__j; \ +}) + +#endif /* _LIST_H_ */ diff --git a/logging.c b/logging.c new file mode 100644 index 0000000..61dcfcf --- /dev/null +++ b/logging.c @@ -0,0 +1,102 @@ +/*************************************************************************** + * Copyright (C) 06/2006 by Olaf Rempel * + * razzor@kopf-tisch.de * + * * + * This program 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 2 of the License, or * + * (at your option) any later version. * + * * + * This program 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 this program; if not, write to the * + * Free Software Foundation, Inc., * + * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * + ***************************************************************************/ +#include +#include +#include +#include +#include +#include + +#include "logging.h" + +#define BUFSIZE 8192 + +static FILE *log_fd = NULL; +static int log_prio = LOG_EVERYTIME; +static char *buffer = NULL; + +int log_print(int prio, const char *fmt, ...) +{ + va_list az; + int len = 0, retval; + + if (prio < log_prio) + return 0; + + if (buffer == NULL) { + buffer = malloc(BUFSIZE); + if (buffer == NULL) { + fprintf(stderr, "log_print(): out of memory\n"); + return -1; + } + } + + if (log_fd != NULL) { + time_t tzgr; + time(&tzgr); + + len += strftime(buffer, BUFSIZE, "%b %d %H:%M:%S :", localtime(&tzgr)); + } + + va_start(az, fmt); + len += vsnprintf(buffer + len, BUFSIZE - len, fmt, az); + va_end(az); + + if (len < 0 || len >= BUFSIZE) { + errno = 0; + return log_print(LOG_ERROR, "log_print: arguments too long"); + } + + if (errno) { + len += snprintf(buffer + len, BUFSIZE - len, ": %s", strerror(errno)); + errno = 0; + } + + retval = fprintf((log_fd ? log_fd : stderr), "%s\n", buffer); + fflush(log_fd); + return retval; +} + +void log_close(void) +{ + if (buffer) + free(buffer); + + if (log_fd) + fclose(log_fd); +} + +int log_init(const char *logfile) +{ + if (log_fd != NULL) + log_close(); + + log_fd = fopen(logfile, "a"); + if (log_fd == NULL) { + fprintf(stderr, "log_init(): can not open logfile"); + return -1; + } + return 0; +} + +void log_setprio(int prio) +{ + log_prio = prio; +} diff --git a/logging.h b/logging.h new file mode 100644 index 0000000..82d028d --- /dev/null +++ b/logging.h @@ -0,0 +1,19 @@ +#ifndef _LOGGING_H_ +#define _LOGGING_H_ + +#define LOG_DEBUG 5 +#define LOG_INFO 4 +#define LOG_NOTICE 3 +#define LOG_WARN 2 +#define LOG_ERROR 1 +#define LOG_CRIT 0 + +#define LOG_EVERYTIME 0 + +int log_init(const char *logfile); +void log_close(void); +void log_setprio(int prio); + +int log_print(int prio, const char *fmt, ... ); + +#endif /* _LOGGING_H_ */