commit eacec9b62892c574381afb8d14f7a15a024a7006 Author: Olaf Rempel Date: Fri Jun 23 22:02:31 2006 +0200 init diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..c9566ca --- /dev/null +++ b/.gitignore @@ -0,0 +1,4 @@ +*.o +*.d +cachesyncd +cachesyncd.log diff --git a/AUTHORS b/AUTHORS new file mode 100644 index 0000000..093c6e0 --- /dev/null +++ b/AUTHORS @@ -0,0 +1 @@ +Olaf Rempel diff --git a/COPYING b/COPYING new file mode 100644 index 0000000..60549be --- /dev/null +++ b/COPYING @@ -0,0 +1,340 @@ + GNU GENERAL PUBLIC LICENSE + Version 2, June 1991 + + Copyright (C) 1989, 1991 Free Software Foundation, Inc. + 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The licenses for most software are designed to take away your +freedom to share and change it. By contrast, the GNU General Public +License is intended to guarantee your freedom to share and change free +software--to make sure the software is free for all its users. This +General Public License applies to most of the Free Software +Foundation's software and to any other program whose authors commit to +using it. (Some other Free Software Foundation software is covered by +the GNU Library General Public License instead.) You can apply it to +your programs, too. + + When we speak of free software, we are referring to freedom, not +price. Our General Public Licenses are designed to make sure that you +have the freedom to distribute copies of free software (and charge for +this service if you wish), that you receive source code or can get it +if you want it, that you can change the software or use pieces of it +in new free programs; and that you know you can do these things. + + To protect your rights, we need to make restrictions that forbid +anyone to deny you these rights or to ask you to surrender the rights. +These restrictions translate to certain responsibilities for you if you +distribute copies of the software, or if you modify it. + + For example, if you distribute copies of such a program, whether +gratis or for a fee, you must give the recipients all the rights that +you have. You must make sure that they, too, receive or can get the +source code. And you must show them these terms so they know their +rights. + + We protect your rights with two steps: (1) copyright the software, and +(2) offer you this license which gives you legal permission to copy, +distribute and/or modify the software. + + Also, for each author's protection and ours, we want to make certain +that everyone understands that there is no warranty for this free +software. If the software is modified by someone else and passed on, we +want its recipients to know that what they have is not the original, so +that any problems introduced by others will not reflect on the original +authors' reputations. + + Finally, any free program is threatened constantly by software +patents. We wish to avoid the danger that redistributors of a free +program will individually obtain patent licenses, in effect making the +program proprietary. To prevent this, we have made it clear that any +patent must be licensed for everyone's free use or not licensed at all. + + The precise terms and conditions for copying, distribution and +modification follow. + + GNU GENERAL PUBLIC LICENSE + TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION + + 0. This License applies to any program or other work which contains +a notice placed by the copyright holder saying it may be distributed +under the terms of this General Public License. The "Program", below, +refers to any such program or work, and a "work based on the Program" +means either the Program or any derivative work under copyright law: +that is to say, a work containing the Program or a portion of it, +either verbatim or with modifications and/or translated into another +language. (Hereinafter, translation is included without limitation in +the term "modification".) Each licensee is addressed as "you". + +Activities other than copying, distribution and modification are not +covered by this License; they are outside its scope. The act of +running the Program is not restricted, and the output from the Program +is covered only if its contents constitute a work based on the +Program (independent of having been made by running the Program). +Whether that is true depends on what the Program does. + + 1. You may copy and distribute verbatim copies of the Program's +source code as you receive it, in any medium, provided that you +conspicuously and appropriately publish on each copy an appropriate +copyright notice and disclaimer of warranty; keep intact all the +notices that refer to this License and to the absence of any warranty; +and give any other recipients of the Program a copy of this License +along with the Program. + +You may charge a fee for the physical act of transferring a copy, and +you may at your option offer warranty protection in exchange for a fee. + + 2. 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It is safest +to attach them to the start of each source file to most effectively +convey the exclusion of warranty; and each file should have at least +the "copyright" line and a pointer to where the full notice is found. + + + Copyright (C) 19yy + + 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 + + +Also add information on how to contact you by electronic and paper mail. + +If the program is interactive, make it output a short notice like this +when it starts in an interactive mode: + + Gnomovision version 69, Copyright (C) 19yy name of author + Gnomovision 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, the commands you use may +be called something other than `show w' and `show c'; they could even be +mouse-clicks or menu items--whatever suits your program. + +You should also get your employer (if you work as a programmer) or your +school, if any, to sign a "copyright disclaimer" for the program, if +necessary. Here is a sample; alter the names: + + Yoyodyne, Inc., hereby disclaims all copyright interest in the program + `Gnomovision' (which makes passes at compilers) written by James Hacker. + + , 1 April 1989 + Ty Coon, President of Vice + +This 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 Library General +Public License instead of this License. diff --git a/Makefile b/Makefile new file mode 100644 index 0000000..ac4ad37 --- /dev/null +++ b/Makefile @@ -0,0 +1,22 @@ +# Toplevel Makefile + +SRC := cachesyncd.c configfile.c logging.c multicast.c unixsock.c +CFLAGS := -O2 -Wall + +# ############################ + +all: cachesyncd + +cachesyncd: $(SRC:%.c=%.o) + $(CC) $(LDFLAGS) $^ -o $@ + +%.d: %.c + $(CC) $(CFLAGS) -MM -c $< -o $@ + +%.o: %.c + $(CC) $(CFLAGS) -o $@ -c $< + +clean: + rm -rf *.d *.o cachesyncd + +-include $(SRC:.c=.d) diff --git a/cachesyncd.c b/cachesyncd.c new file mode 100644 index 0000000..d7ccf22 --- /dev/null +++ b/cachesyncd.c @@ -0,0 +1,111 @@ +/*************************************************************************** + * 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 "configfile.h" +#include "logging.h" +#include "multicast.h" +#include "unixsock.h" + +#define DEFAULT_CONFIG "cachesyncd.conf" +#define DEFAULT_LOGFILE "cachesyncd.log" + +static struct option opts[] = { + {"config", 1, 0, 'c'}, + {"debug", 0, 0, 'd'}, + {"help", 0, 0, 'h'}, + {0, 0, 0, 0} +}; + +static void run() +{ + int usock, msock; + usock = sock_init(); + msock = mcast_init(); + + mcast_send(msock, "HALLO", 6); + + msock_close(msock); + sock_close(usock); +} + +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: cachesyncd [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); + + /* check logfile */ + char *logfile = config_get_string("global", "logfile", DEFAULT_LOGFILE); + if (logfile != NULL && debug == 0) { + /* start logging */ + if (!log_init(logfile)) + exit(-1); + + /* zum daemon mutieren */ + daemon(-1, 0); + } + + log_print(LOG_EVERYTIME, "cachesyncd started"); + + run(); + + return 0; +} diff --git a/cachesyncd.conf b/cachesyncd.conf new file mode 100644 index 0000000..86eee40 --- /dev/null +++ b/cachesyncd.conf @@ -0,0 +1,17 @@ +[global] +# unpriviliged user +user httpd + +# pidfile location +pidfile ./cachesync.pid + +# unix domain socket location +socket ./cachesync.sock + +# bind to multicast interface +mcastdev eth0 +mcastgroup 224.0.0.1 +mcastport 2000 + +# smarty cache directory +basedir /var/www/smarty/cache/ diff --git a/configfile.c b/configfile.c new file mode 100644 index 0000000..72aa088 --- /dev/null +++ b/configfile.c @@ -0,0 +1,182 @@ +/*************************************************************************** + * 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 "list.h" + +#include "configfile.h" +#include "logging.h" + +static LIST_HEAD(config_list); + +static struct conf_section * config_add_section(char *name) +{ + struct conf_section *section; + + if (!name) + return NULL; + + section = malloc(sizeof(struct conf_section)); + if (section) { + INIT_LIST_HEAD(§ion->list); + INIT_LIST_HEAD(§ion->tupel); + + strncpy(section->name, name, sizeof(section->name)); + list_add_tail(§ion->list, &config_list); + } + return section; +} + +static int config_add_tupel(struct conf_section *section, char *option, char *parameter) +{ + struct conf_tupel *tupel; + + if (!section || !option || !parameter) + return 0; + + if (!(tupel = malloc(sizeof(struct conf_tupel)))) + return 0; + + INIT_LIST_HEAD(&tupel->list); + + tupel->option = strdup(option); + tupel->parameter = strdup(parameter); + + list_add_tail(&tupel->list, §ion->tupel); + return 1; +} + +static 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_del(&tupel->list); + free(tupel->option); + free(tupel->parameter); + free(tupel); + } + list_del(§ion->list); + free(section); + } +} + +int config_parse(char *config) +{ + struct conf_section *section = NULL; + FILE *fz; + int i = 0, ret = 1; + char *row, *tok, *tok2; + + if (!config) + return 0; + + if (!(row = malloc(1024))) + return 0; + + if (!(fz = fopen(config, "r"))) { + log_print(LOG_ERROR, "config_parse(): %s", config); + return 0; + } + + while (fgets(row, 1024, fz)) { + i++; + + if (row[0] == '#' || row[0] <= ' ') { + continue; + + } else if (row[0] == '[') { + tok = strtok(row +1, " ]\n"); + section = config_add_section(tok); + if (!section) { + log_print(LOG_WARN, "config_parse(): invalid section in row %d", i); + ret = 0; + break; + } + continue; + + } else if (!section) { + log_print(LOG_WARN, "config_parse(): missing section in row %d", i); + ret = 0; + break; + } + + if ((tok = strtok(row, " \n")) && (tok2 = strtok(NULL, " \n"))) + if (!config_add_tupel(section, tok, tok2)) + log_print(LOG_WARN, "config_parse(): invalid row %d", i); + } + + fclose(fz); + free(row); + + if (atexit(config_free) != 0) { + log_print(LOG_ERROR, "config_parse(): atexit()"); + return 0; + } + + return ret; +} + +struct conf_section * config_get_section(char *name) +{ + struct conf_section *section; + + list_for_each_entry(section, &config_list, list) { + if (!strcmp(section->name, name)) + return section; + } + return NULL; +} + +char * config_get_parameter(struct conf_section *section, char *option) +{ + struct conf_tupel *tupel; + + list_for_each_entry(tupel, §ion->tupel, list) { + if (!strcmp(tupel->option, option)) + return tupel->parameter; + } + return NULL; +} + +char * config_get_string(char *section, char *option, char *def) +{ + struct conf_section *tmp; + char *ret; + + tmp = config_get_section(section); + if (tmp && (ret = config_get_parameter(tmp, option))) + return ret; + + return def; +} + +int config_get_int(char *section, char *option, int def) +{ + char *ret; + + ret = config_get_string(section, option, NULL); + return ret ? atoi(ret) : def; +} diff --git a/configfile.h b/configfile.h new file mode 100644 index 0000000..1f0131f --- /dev/null +++ b/configfile.h @@ -0,0 +1,24 @@ +#ifndef _CONFIG_H_ +#define _CONFIG_H_ + +#include "list.h" + +struct conf_section { + struct list_head list; + char name[32]; + struct list_head tupel; +}; + +struct conf_tupel { + struct list_head list; + char *option; + char *parameter; +}; + +int config_parse(char *config); +struct conf_section * config_get_section(char *name); +char * config_get_parameter(struct conf_section *section, char *option); +char * config_get_string(char *section, char *option, char *def); +int config_get_int(char *section, char *option, int def); + +#endif /* _CONFIG_H_ */ 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..d4fd706 --- /dev/null +++ b/logging.c @@ -0,0 +1,103 @@ +/*************************************************************************** + * 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 char *buffer = NULL; + +void log_print(int prio, const char *fmt, ...) +{ + va_list az; + int len; + + if (buffer == NULL) { + buffer = malloc(BUFSIZE); + if (buffer == NULL) { + fprintf(stderr, "log_print: out of memory\nBailing out!\n"); + exit(-1); + } + } + + va_start(az, fmt); + len = vsnprintf(buffer, BUFSIZE, fmt, az); + va_end(az); + + if (len < 0 || len >= BUFSIZE) { + log_print(LOG_ERROR, "log_print: arguments too long"); + errno = 0; + return; + } + + if (errno) { + strncpy(buffer + len, ": ", BUFSIZE - len); + len += 2; + strncpy(buffer + len, strerror(errno), BUFSIZE - len); + } + + if (log_fd) { + char tbuf[64]; + time_t tzgr; + + time(&tzgr); + strftime(tbuf, sizeof(tbuf), "%b %d %H:%M:%S :", localtime(&tzgr)); + + fprintf(log_fd, "%s %s\n", tbuf, buffer); + fflush(log_fd); + + } else { + fprintf(stderr, "%s\n", buffer); + } + + errno = 0; +} + +static void log_close(void) +{ + if (buffer) + free(buffer); + + fclose(log_fd); +} + +int log_init(char *logfile) +{ + log_fd = fopen(logfile, "a"); + if (log_fd == NULL) { + log_print(LOG_ERROR, "log_open('%s'): %s", logfile); + return 0; + } + + if (atexit(log_close) != 0) { + log_print(LOG_ERROR, "log_open(): atexit()"); + return 0; + } + + log_print(LOG_EVERYTIME, "=========================="); + return 1; +} diff --git a/logging.h b/logging.h new file mode 100644 index 0000000..c6e32c0 --- /dev/null +++ b/logging.h @@ -0,0 +1,16 @@ +#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(char *logfile); +void log_print(int prio, const char *fmt, ... ); + +#endif /* _LOGGING_H_ */ diff --git a/multicast.c b/multicast.c new file mode 100644 index 0000000..bf660df --- /dev/null +++ b/multicast.c @@ -0,0 +1,117 @@ +/*************************************************************************** + * 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 "logging.h" + +static struct sockaddr_in dest_addr; + +int mcast_init() +{ + struct ip_mreq multiaddr; + struct ifreq ifr; + char *mcastdev, *mcastgroup; + int mcastport, sock; + + // open socket + sock = socket(AF_INET, SOCK_DGRAM, 0); + if (sock == -1) { + log_print(LOG_ERROR, "mcast_init: socket()"); + return -1; + } + + // get device flags + mcastdev = config_get_string("global", "mcastdev", "eth0"); + strncpy(ifr.ifr_name, mcastdev, sizeof(ifr.ifr_name)); + if (ioctl(sock, SIOCGIFFLAGS, &ifr) != 0) { + log_print(LOG_WARN, "mcast_init: ioctl(SIOCGIFFLAGS)"); + close(sock); + return -1; + } + + // check device flags + if ((ifr.ifr_flags & (IFF_UP | IFF_MULTICAST)) != (IFF_UP | IFF_MULTICAST)) { + log_print(LOG_WARN, "mcast_init: device %s not up"); + close(sock); + return -1; + } + + if (setsockopt(sock, SOL_SOCKET, SO_BINDTODEVICE, ifr.ifr_name, sizeof(ifr.ifr_name)) < 0) { + log_print(LOG_WARN, "mcast_init: setsockopt(SO_BINDTODEVICE)"); +// close(sock); +// return -1; + } + + mcastgroup = config_get_string("global", "mcastgroup", "224.0.0.1"); + mcastport = config_get_int("global", "mcastport", 2000); + + dest_addr.sin_family = AF_INET; + inet_aton(mcastgroup, &dest_addr.sin_addr); + dest_addr.sin_port = htons(mcastport); + + if (bind(sock, (struct sockaddr*)&dest_addr, sizeof(dest_addr)) < 0) { + log_print(LOG_WARN, "mcast_init: bind()"); + return -1; + } + + // get interface address + if (ioctl(sock, SIOCGIFADDR, &ifr) != 0) { + log_print(LOG_WARN, "mcast_init: ioctl(SIOCGIFADDR)"); + close(sock); + return -1; + } + + // check address family + if (ifr.ifr_addr.sa_family != AF_INET) { + log_print(LOG_WARN, "mcast_init: unknown address family"); + close(sock); + return -1; + } + + inet_aton(mcastgroup, &multiaddr.imr_multiaddr); + multiaddr.imr_interface.s_addr = ((struct sockaddr_in *)&ifr.ifr_addr)->sin_addr.s_addr; + + if (setsockopt(sock, IPPROTO_IP, IP_ADD_MEMBERSHIP, + &multiaddr, sizeof(multiaddr)) == -1) { + log_print(LOG_WARN, "mcast_init: setsockopt(IP_ADD_MEMBERSHIP)"); + close(sock); + return -1; + } + + return sock; +} + +int mcast_send(int sock, char *buf, int len) +{ + return sendto(sock, buf, len, MSG_NOSIGNAL, (const struct sockaddr*)&dest_addr, sizeof(dest_addr)); +} + +void msock_close(int sock) +{ + close(sock); +} diff --git a/multicast.h b/multicast.h new file mode 100644 index 0000000..8691632 --- /dev/null +++ b/multicast.h @@ -0,0 +1,10 @@ +#ifndef _MULTICAST_H_ +#define _MULTICAST_H_ + +int mcast_init(); + +int mcast_send(int sock, char *buf, int len); + +void msock_close(int sock); + +#endif // _MULTICAST_H_ diff --git a/unixsock.c b/unixsock.c new file mode 100644 index 0000000..8b3a237 --- /dev/null +++ b/unixsock.c @@ -0,0 +1,74 @@ +/*************************************************************************** + * 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 "configfile.h" +#include "logging.h" + +#define DEFAULT_SOCKET "/tmp/cachesyncd" + +int sock_init() +{ + struct sockaddr_un addr; + char *filename; + mode_t old_umask; + int sockfd, len, status; + + sockfd = socket(AF_UNIX, SOCK_STREAM, 0); + if (sockfd == -1) { + log_print(LOG_ERROR, "unixsock: socket()"); + return -1; + } + + filename = config_get_string("global", "socket", DEFAULT_SOCKET); + + addr.sun_family = AF_UNIX; + strncpy(addr.sun_path, filename, sizeof(addr.sun_path)); + len = sizeof(addr.sun_family) + strlen(addr.sun_path); + + old_umask = umask(0077); + status = bind(sockfd, (struct sockaddr *) &addr, len); + umask(old_umask); + + if (status == -1) { + log_print(LOG_ERROR, "unixsock: bind()"); + return -1; + } + + return sockfd; +} + +void sock_close(int sockfd) +{ + char *filename; + int status; + + close(sockfd); + + filename = config_get_string("global", "socket", DEFAULT_SOCKET); + status = unlink(filename); + if (status == -1) + log_print(LOG_WARN, "unixsock: unlink()"); +} diff --git a/unixsock.h b/unixsock.h new file mode 100644 index 0000000..39c14eb --- /dev/null +++ b/unixsock.h @@ -0,0 +1,7 @@ +#ifndef _UNIXSOCK_H_ +#define _UNIXSOCK_H_ + +int sock_init(); +void sock_close(int sockfd); + +#endif // _UNIXSOCK_H_