2 * Revision 1.2 1996/04/14 16:34:36 sde1000
4 * mpbin/mpstring functions moved from dh.c
6 * Revision 1.1 1996/03/14 17:05:03 sde1000
20 #include "unaligned.h"
22 #define MIN_BUFFER_SIZE 64
23 #define DEFAULT_BUFFER_SIZE 4096
24 #define MAX_BUFFER_SIZE 131072
26 static char *hexdigits="0123456789abcdef";
28 uint32_t message_level=M_WARNING|M_ERROR|M_FATAL;
29 uint32_t syslog_level=M_WARNING|M_ERROR|M_FATAL;
30 static uint32_t current_phase=0;
35 struct phase_hook *next;
38 static struct phase_hook *hooks[NR_PHASES]={NULL,};
40 static void vMessage(uint32_t class, char *message, va_list args)
43 if (class & message_level) {
44 if (class&M_FATAL || class&M_ERROR || class&M_WARNING) {
47 vfprintf(dest,message,args);
49 /* XXX do something about syslog output here */
51 /* Maybe send message to syslog */
52 vsprintf(buff, message, args);
53 /* XXX Send each line as a separate log entry */
54 log(syslog_prio[level], buff);
58 void Message(uint32_t class, char *message, ...)
64 vMessage(class,message,ap);
69 static void vfatal(int status, bool_t perror, char *message, va_list args)
75 enter_phase(PHASE_SHUTDOWN);
77 Message(M_FATAL, "secnet fatal error: ");
78 vMessage(M_FATAL, message, args);
79 Message(M_FATAL, ": %s\n",strerror(err));
82 Message(M_FATAL, "secnet fatal error: ");
83 vMessage(M_FATAL,message,args);
88 void fatal(char *message, ...)
91 va_start(args,message);
92 vfatal(current_phase,False,message,args);
96 void fatal_status(int status, char *message, ...)
99 va_start(args,message);
100 vfatal(status,False,message,args);
104 void fatal_perror(char *message, ...)
107 va_start(args,message);
108 vfatal(current_phase,True,message,args);
112 void fatal_perror_status(int status, char *message, ...)
115 va_start(args,message);
116 vfatal(status,True,message,args);
120 void cfgfatal(struct cloc loc, string_t facility, char *message, ...)
124 va_start(args,message);
126 enter_phase(PHASE_SHUTDOWN);
128 if (loc.file && loc.line) {
129 Message(M_FATAL, "config error (%s, %s:%d): ",facility,loc.file,
131 } else if (!loc.file && loc.line) {
132 Message(M_FATAL, "config error (%s, line %d): ",facility,loc.line);
134 Message(M_FATAL, "config error (%s): ",facility);
137 vMessage(M_FATAL,message,args);
142 char *safe_strdup(char *s, char *message)
147 fatal_perror(message);
152 void *safe_malloc(size_t size, char *message)
157 fatal_perror(message);
162 /* Convert a buffer into its MP_INT representation */
163 void read_mpbin(MP_INT *a, uint8_t *bin, int binsize)
168 buff=safe_malloc(binsize*2 + 1,"read_mpbin");
170 for (i=0; i<binsize; i++) {
171 buff[i*2]=hexdigits[(bin[i] & 0xf0) >> 4];
172 buff[i*2+1]=hexdigits[(bin[i] & 0xf)];
176 mpz_set_str(a, buff, 16);
180 /* Convert a MP_INT into a hex string */
181 char *write_mpstring(MP_INT *a)
185 buff=safe_malloc(mpz_sizeinbase(a,16)+2,"write_mpstring");
186 mpz_get_str(buff, 16, a);
190 static uint8_t hexval(uint8_t c)
219 /* Convert a MP_INT into a buffer; return length; truncate if necessary */
220 uint32_t write_mpbin(MP_INT *a, uint8_t *buffer, uint32_t buflen)
225 if (buflen==0) return 0;
226 hb=write_mpstring(a);
231 /* The number starts with a half-byte */
232 buffer[i++]=hexval(hb[j++]);
234 for (; hb[j] && i<buflen; i++) {
235 buffer[i]=(hexval(hb[j])<<4)|hexval(hb[j+1]);
242 bool_t subnet_match(struct subnet *s, uint32_t address)
244 return (s->prefix==(address&s->mask));
247 bool_t subnet_matches_list(struct subnet_list *list, uint32_t address)
250 for (i=0; i<list->entries; i++) {
251 if (list->list[i].prefix == (address&list->list[i].mask)) return True;
256 bool_t subnets_intersect(struct subnet a, struct subnet b)
258 uint32_t mask=a.mask&b.mask;
259 return ((a.prefix&mask)==(b.prefix&mask));
262 bool_t subnet_intersects_with_list(struct subnet a, struct subnet_list *b)
266 for (i=0; i<b->entries; i++) {
267 if (subnets_intersect(a,b->list[i])) return True;
272 bool_t subnet_lists_intersect(struct subnet_list *a, struct subnet_list *b)
275 for (i=0; i<a->entries; i++) {
276 if (subnet_intersects_with_list(a->list[i],b)) return True;
281 /* The string buffer must be at least 16 bytes long */
282 string_t ipaddr_to_string(uint32_t addr)
287 s=safe_malloc(16,"ipaddr_to_string");
292 snprintf(s, 16, "%d.%d.%d.%d", a, b, c, d);
296 string_t subnet_to_string(struct subnet *sn)
298 uint32_t mask=sn->mask, addr=sn->prefix;
303 s=safe_malloc(19,"subnet_to_string");
308 for (i=0; mask; i++) {
312 fatal("subnet_to_string: invalid subnet structure!\n");
314 snprintf(s, 19, "%d.%d.%d.%d/%d", a, b, c, d, sn->len);
318 int sys_cmd(const char *path, char *arg, ...)
327 /* Parent -> wait for child */
332 /* Child -> exec command */
335 while ((args[i++]=va_arg(ap,char *)));
340 fatal_perror("sys_cmd(%s,%s,...)");
347 /* Take a list of log closures and merge them */
350 struct loglist *next;
353 static void log_vmulti(void *state, int priority, char *message, va_list args)
355 struct loglist *st=state, *i;
357 for (i=st; i; i=i->next) {
358 i->l->vlog(i->l->st,priority,message,args);
362 static void log_multi(void *st, int priority, char *message, ...)
366 va_start(ap,message);
368 log_vmulti(st,priority,message,ap);
373 struct log_if *init_log(list_t *ll)
378 struct loglist *l=NULL, *n;
381 while ((item=list_elem(ll,i++))) {
382 if (item->type!=t_closure) {
383 cfgfatal(item->loc,"init_log","item is not a closure");
385 cl=item->data.closure;
386 if (cl->type!=CL_LOG) {
387 cfgfatal(item->loc,"init_log","closure is not a logger");
389 n=safe_malloc(sizeof(*n),"init_log");
395 fatal("init_log: none of the items in the list are loggers");
397 r=safe_malloc(sizeof(*r), "init_log");
410 static void logfile_vlog(void *state, int priority, char *message,
413 struct logfile *st=state;
415 vfprintf(st->f,message,args);
419 static void logfile_log(void *state, int priority, char *message, ...)
423 va_start(ap,message);
424 logfile_vlog(state,priority,message,ap);
428 static list_t *logfile_apply(closure_t *self, struct cloc loc, dict_t *context,
433 st=safe_malloc(sizeof(*st),"logfile_apply");
434 st->cl.description="logfile";
437 st->cl.interface=&st->ops;
439 st->ops.log=logfile_log;
440 st->ops.vlog=logfile_vlog;
441 st->f=stderr; /* XXX ignore args */
443 return new_closure(&st->cl);
446 static char *phases[NR_PHASES]={
451 "PHASE_GETRESOURCES",
457 void enter_phase(uint32_t new_phase)
459 struct phase_hook *i;
461 if (hooks[new_phase])
462 Message(M_DEBUG_PHASE,"Running hooks for %s...\n", phases[new_phase]);
463 current_phase=new_phase;
465 for (i=hooks[new_phase]; i; i=i->next)
466 i->fn(i->state, new_phase);
467 Message(M_DEBUG_PHASE,"Now in %s\n",phases[new_phase]);
470 bool_t add_hook(uint32_t phase, hook_fn *fn, void *state)
472 struct phase_hook *h;
474 h=safe_malloc(sizeof(*h),"add_hook");
477 h->next=hooks[phase];
482 bool_t remove_hook(uint32_t phase, hook_fn *fn, void *state)
484 fatal("remove_hook: not implemented\n");
489 void log(struct log_if *lf, int priority, char *message, ...)
493 va_start(ap,message);
494 lf->vlog(lf->st,priority,message,ap);
500 struct buffer_if ops;
503 void buffer_assert_free(struct buffer_if *buffer, string_t file, uint32_t line)
506 fatal("BUF_ASSERT_FREE, %s line %d, owned by %s\n",
507 file,line,buffer->owner);
511 void buffer_assert_used(struct buffer_if *buffer, string_t file, uint32_t line)
514 fatal("BUF_ASSERT_USED, %s line %d, last owned by %s\n",
515 file,line,buffer->owner);
519 void buffer_init(struct buffer_if *buffer, uint32_t max_start_pad)
521 buffer->start=buffer->base+max_start_pad;
525 void *buf_append(struct buffer_if *buf, uint32_t amount) {
527 p=buf->start + buf->size;
532 void *buf_prepend(struct buffer_if *buf, uint32_t amount) {
534 return buf->start-=amount;
537 void *buf_unappend(struct buffer_if *buf, uint32_t amount) {
538 if (buf->size < amount) return 0;
539 return buf->start+(buf->size-=amount);
542 void *buf_unprepend(struct buffer_if *buf, uint32_t amount) {
550 /* Append a two-byte length and the string to the buffer. Length is in
551 network byte order. */
552 void buf_append_string(struct buffer_if *buf, string_t s)
557 buf_append_uint16(buf,len);
558 memcpy(buf_append(buf,len),s,len);
561 void buffer_new(struct buffer_if *buf, uint32_t len)
571 buf->base=safe_malloc(len,"buffer_new");
574 static list_t *buffer_apply(closure_t *self, struct cloc loc, dict_t *context,
580 bool_t lockdown=False;
581 uint32_t len=DEFAULT_BUFFER_SIZE;
583 st=safe_malloc(sizeof(*st),"buffer_apply");
584 st->cl.description="buffer";
585 st->cl.type=CL_BUFFER;
587 st->cl.interface=&st->ops;
589 /* First argument, if present, is buffer length */
590 item=list_elem(args,0);
592 if (item->type!=t_number) {
593 cfgfatal(st->ops.loc,"buffer","first parameter must be a "
594 "number (buffer size)\n");
596 len=item->data.number;
597 if (len<MIN_BUFFER_SIZE) {
598 cfgfatal(st->ops.loc,"buffer","ludicrously small buffer size\n");
600 if (len>MAX_BUFFER_SIZE) {
601 cfgfatal(st->ops.loc,"buffer","ludicrously large buffer size\n");
604 /* Second argument, if present, is a dictionary */
605 item=list_elem(args,1);
607 if (item->type!=t_dict) {
608 cfgfatal(st->ops.loc,"buffer","second parameter must be a "
611 dict=item->data.dict;
612 lockdown=dict_read_bool(dict,"lockdown",False,"buffer",st->ops.loc,
616 buffer_new(&st->ops,len);
618 /* XXX mlock the buffer if possible */
621 return new_closure(&st->cl);
624 init_module util_module;
625 void util_module(dict_t *dict)
627 add_closure(dict,"logfile",logfile_apply);
628 add_closure(dict,"sysbuffer",buffer_apply);