-/* $Log: util.c,v $
- * Revision 1.2 1996/04/14 16:34:36 sde1000
- * Added syslog support
- * mpbin/mpstring functions moved from dh.c
- *
- * Revision 1.1 1996/03/14 17:05:03 sde1000
- * Initial revision
+/*
+ * util.c
+ * - output and logging support
+ * - program lifetime support
+ * - IP address and subnet munging routines
+ * - MPI convenience functions
+ */
+/*
+ * This file is
+ * Copyright (C) 1995--2001 Stephen Early <steve@greenend.org.uk>
*
+ * It is part of secnet, which is
+ * Copyright (C) 1995--2001 Stephen Early <steve@greenend.org.uk>
+ * Copyright (C) 1998 Ross Anderson, Eli Biham, Lars Knudsen
+ *
+ * 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, 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 "config.h"
+#include "secnet.h"
#include <stdio.h>
-#include <stdarg.h>
#include <string.h>
#include <errno.h>
-#include <syslog.h>
#include <unistd.h>
#include <limits.h>
#include <assert.h>
-#include <sys/types.h>
#include <sys/wait.h>
#include "util.h"
-#include "secnet.h"
#include "unaligned.h"
#define MIN_BUFFER_SIZE 64
static char *hexdigits="0123456789abcdef";
-uint32_t message_level=M_WARNING|M_ERROR|M_FATAL;
-uint32_t syslog_level=M_WARNING|M_ERROR|M_FATAL;
-static uint32_t current_phase=0;
+uint32_t current_phase=0;
struct phase_hook {
hook_fn *fn;
static struct phase_hook *hooks[NR_PHASES]={NULL,};
-static void vMessage(uint32_t class, char *message, va_list args)
-{
- FILE *dest=stdout;
- if (class & message_level) {
- if (class&M_FATAL || class&M_ERROR || class&M_WARNING) {
- dest=stderr;
- }
- vfprintf(dest,message,args);
- }
-/* XXX do something about syslog output here */
-#if 0
- /* Maybe send message to syslog */
- vsprintf(buff, message, args);
- /* XXX Send each line as a separate log entry */
- log(syslog_prio[level], buff);
-#endif /* 0 */
-}
-
-void Message(uint32_t class, char *message, ...)
-{
- va_list ap;
-
- va_start(ap,message);
-
- vMessage(class,message,ap);
-
- va_end(ap);
-}
-
-static void vfatal(int status, bool_t perror, char *message, va_list args)
-{
- int err;
-
- err=errno;
-
- enter_phase(PHASE_SHUTDOWN);
- if (perror) {
- Message(M_FATAL, "secnet fatal error: ");
- vMessage(M_FATAL, message, args);
- Message(M_FATAL, ": %s\n",strerror(err));
- }
- else {
- Message(M_FATAL, "secnet fatal error: ");
- vMessage(M_FATAL,message,args);
- }
- exit(status);
-}
-
-void fatal(char *message, ...)
-{
- va_list args;
- va_start(args,message);
- vfatal(current_phase,False,message,args);
- va_end(args);
-}
-
-void fatal_status(int status, char *message, ...)
-{
- va_list args;
- va_start(args,message);
- vfatal(status,False,message,args);
- va_end(args);
-}
-
-void fatal_perror(char *message, ...)
-{
- va_list args;
- va_start(args,message);
- vfatal(current_phase,True,message,args);
- va_end(args);
-}
-
-void fatal_perror_status(int status, char *message, ...)
-{
- va_list args;
- va_start(args,message);
- vfatal(status,True,message,args);
- va_end(args);
-}
-
-void cfgfatal(struct cloc loc, string_t facility, char *message, ...)
-{
- va_list args;
-
- va_start(args,message);
-
- enter_phase(PHASE_SHUTDOWN);
-
- if (loc.file && loc.line) {
- Message(M_FATAL, "config error (%s, %s:%d): ",facility,loc.file,
- loc.line);
- } else if (!loc.file && loc.line) {
- Message(M_FATAL, "config error (%s, line %d): ",facility,loc.line);
- } else {
- Message(M_FATAL, "config error (%s): ",facility);
- }
-
- vMessage(M_FATAL,message,args);
- va_end(args);
- exit(current_phase);
-}
-
char *safe_strdup(char *s, char *message)
{
char *d;
return i;
}
-bool_t subnet_match(struct subnet_list *list, uint32_t address)
-{
- uint32_t i;
- for (i=0; i<list->entries; i++) {
- if (list->list[i].prefix == (address&list->list[i].mask)) return True;
- }
- return False;
-}
-
-/* The string buffer must be at least 16 bytes long */
-string_t ipaddr_to_string(uint32_t addr)
-{
- uint8_t a,b,c,d;
- string_t s;
-
- s=safe_malloc(16,"ipaddr_to_string");
- a=addr>>24;
- b=addr>>16;
- c=addr>>8;
- d=addr;
- snprintf(s, 16, "%d.%d.%d.%d", a, b, c, d);
- return s;
-}
-
-string_t subnet_to_string(struct subnet *sn)
-{
- uint32_t mask=sn->mask, addr=sn->prefix;
- uint8_t a,b,c,d;
- string_t s;
- int i;
-
- s=safe_malloc(19,"subnet_to_string");
- a=addr>>24;
- b=addr>>16;
- c=addr>>8;
- d=addr;
- for (i=0; mask; i++) {
- mask=(mask<<1);
- }
- snprintf(s, 19, "%d.%d.%d.%d/%d", a, b, c, d, i);
- return s;
-}
-
-int sys_cmd(const char *path, char *arg, ...)
-{
- va_list ap;
- int rv;
- pid_t c;
-
- va_start(ap,arg);
- c=fork();
- if (c) {
- /* Parent -> wait for child */
- waitpid(c,&rv,0);
- } else if (c==0) {
- char *args[100];
- int i;
- /* Child -> exec command */
- args[0]=arg;
- i=1;
- while ((args[i++]=va_arg(ap,char *)));
- execvp(path,args);
- exit(1);
- } else {
- /* Error */
- fatal_perror("sys_cmd(%s,%s,...)");
- }
-
- va_end(ap);
- return rv;
-}
-
-/* Take a list of log closures and merge them */
-struct loglist {
- struct log_if *l;
- struct loglist *next;
-};
-
-static void log_vmulti(void *state, int priority, char *message, va_list args)
-{
- struct loglist *st=state, *i;
-
- for (i=st; i; i=i->next) {
- i->l->vlog(i->l->st,priority,message,args);
- }
-}
-
-static void log_multi(void *st, int priority, char *message, ...)
-{
- va_list ap;
-
- va_start(ap,message);
-
- log_vmulti(st,priority,message,ap);
-
- va_end(ap);
-}
-
-struct log_if *init_log(list_t *ll)
-{
- int i=0;
- item_t *item;
- closure_t *cl;
- struct loglist *l=NULL, *n;
- struct log_if *r;
-
- while ((item=list_elem(ll,i++))) {
- if (item->type!=t_closure) {
- cfgfatal(item->loc,"init_log","item is not a closure");
- }
- cl=item->data.closure;
- if (cl->type!=CL_LOG) {
- cfgfatal(item->loc,"init_log","closure is not a logger");
- }
- n=safe_malloc(sizeof(*n),"init_log");
- n->l=cl->interface;
- n->next=l;
- l=n;
- }
- if (!l) {
- fatal("init_log: none of the items in the list are loggers");
- }
- r=safe_malloc(sizeof(*r), "init_log");
- r->st=l;
- r->log=log_multi;
- r->vlog=log_vmulti;
- return r;
-}
-
-struct logfile {
- closure_t cl;
- struct log_if ops;
- FILE *f;
-};
-
-static void logfile_vlog(void *state, int priority, char *message,
- va_list args)
-{
- struct logfile *st=state;
-
- vfprintf(st->f,message,args);
- fprintf(st->f,"\n");
-}
-
-static void logfile_log(void *state, int priority, char *message, ...)
-{
- va_list ap;
-
- va_start(ap,message);
- logfile_vlog(state,priority,message,ap);
- va_end(ap);
-}
-
-static list_t *logfile_apply(closure_t *self, struct cloc loc, dict_t *context,
- list_t *data)
-{
- struct logfile *st;
-
- st=safe_malloc(sizeof(*st),"logfile_apply");
- st->cl.description="logfile";
- st->cl.type=CL_LOG;
- st->cl.apply=NULL;
- st->cl.interface=&st->ops;
- st->ops.st=st;
- st->ops.log=logfile_log;
- st->ops.vlog=logfile_vlog;
- st->f=stderr; /* XXX ignore args */
-
- return new_closure(&st->cl);
-}
-
static char *phases[NR_PHASES]={
"PHASE_INIT",
"PHASE_GETOPTS",
"PHASE_READCONFIG",
"PHASE_SETUP",
+ "PHASE_GETRESOURCES",
"PHASE_DROPPRIV",
"PHASE_RUN",
"PHASE_SHUTDOWN"
{
struct phase_hook *i;
- Message(M_DEBUG_PHASE,"entering %s... ", phases[new_phase]);
+ if (hooks[new_phase])
+ Message(M_DEBUG_PHASE,"Running hooks for %s...\n", phases[new_phase]);
current_phase=new_phase;
for (i=hooks[new_phase]; i; i=i->next)
i->fn(i->state, new_phase);
- Message(M_DEBUG_PHASE,"now in %s\n",phases[new_phase]);
+ Message(M_DEBUG_PHASE,"Now in %s\n",phases[new_phase]);
}
bool_t add_hook(uint32_t phase, hook_fn *fn, void *state)
bool_t remove_hook(uint32_t phase, hook_fn *fn, void *state)
{
- fatal("remove_hook: not implemented\n");
+ fatal("remove_hook: not implemented");
return False;
}
void buffer_assert_free(struct buffer_if *buffer, string_t file, uint32_t line)
{
if (!buffer->free) {
- fatal("BUF_ASSERT_FREE, %s line %d, owned by %s\n",
+ fatal("BUF_ASSERT_FREE, %s line %d, owned by %s",
file,line,buffer->owner);
}
}
void buffer_assert_used(struct buffer_if *buffer, string_t file, uint32_t line)
{
if (buffer->free) {
- fatal("BUF_ASSERT_USED, %s line %d, last owned by %s\n",
+ fatal("BUF_ASSERT_USED, %s line %d, last owned by %s",
file,line,buffer->owner);
}
}
buffer_new(&st->ops,len);
if (lockdown) {
- Message(M_WARNING,"buffer: XXX lockdown\n");
+ /* XXX mlock the buffer if possible */
}
return new_closure(&st->cl);
init_module util_module;
void util_module(dict_t *dict)
{
- add_closure(dict,"logfile",logfile_apply);
add_closure(dict,"sysbuffer",buffer_apply);
}
~mdw / secnet / blobdiff