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_list *list, uint32_t address)
245 for (i=0; i<list->entries; i++) {
246 if (list->list[i].prefix == (address&list->list[i].mask)) return True;
251 bool_t subnets_intersect(struct subnet a, struct subnet b)
253 uint32_t mask=a.mask&b.mask;
254 return ((a.prefix&mask)==(b.prefix&mask));
257 bool_t subnet_intersects_with_list(struct subnet a, struct subnet_list *b)
261 for (i=0; i<b->entries; i++) {
262 if (subnets_intersect(a,b->list[i])) return True;
267 bool_t subnet_lists_intersect(struct subnet_list *a, struct subnet_list *b)
270 for (i=0; i<a->entries; i++) {
271 if (subnet_intersects_with_list(a->list[i],b)) return True;
276 /* The string buffer must be at least 16 bytes long */
277 string_t ipaddr_to_string(uint32_t addr)
282 s=safe_malloc(16,"ipaddr_to_string");
287 snprintf(s, 16, "%d.%d.%d.%d", a, b, c, d);
291 string_t subnet_to_string(struct subnet *sn)
293 uint32_t mask=sn->mask, addr=sn->prefix;
298 s=safe_malloc(19,"subnet_to_string");
303 for (i=0; mask; i++) {
306 snprintf(s, 19, "%d.%d.%d.%d/%d", a, b, c, d, i);
310 int sys_cmd(const char *path, char *arg, ...)
319 /* Parent -> wait for child */
324 /* Child -> exec command */
327 while ((args[i++]=va_arg(ap,char *)));
332 fatal_perror("sys_cmd(%s,%s,...)");
339 /* Take a list of log closures and merge them */
342 struct loglist *next;
345 static void log_vmulti(void *state, int priority, char *message, va_list args)
347 struct loglist *st=state, *i;
349 for (i=st; i; i=i->next) {
350 i->l->vlog(i->l->st,priority,message,args);
354 static void log_multi(void *st, int priority, char *message, ...)
358 va_start(ap,message);
360 log_vmulti(st,priority,message,ap);
365 struct log_if *init_log(list_t *ll)
370 struct loglist *l=NULL, *n;
373 while ((item=list_elem(ll,i++))) {
374 if (item->type!=t_closure) {
375 cfgfatal(item->loc,"init_log","item is not a closure");
377 cl=item->data.closure;
378 if (cl->type!=CL_LOG) {
379 cfgfatal(item->loc,"init_log","closure is not a logger");
381 n=safe_malloc(sizeof(*n),"init_log");
387 fatal("init_log: none of the items in the list are loggers");
389 r=safe_malloc(sizeof(*r), "init_log");
402 static void logfile_vlog(void *state, int priority, char *message,
405 struct logfile *st=state;
407 vfprintf(st->f,message,args);
411 static void logfile_log(void *state, int priority, char *message, ...)
415 va_start(ap,message);
416 logfile_vlog(state,priority,message,ap);
420 static list_t *logfile_apply(closure_t *self, struct cloc loc, dict_t *context,
425 st=safe_malloc(sizeof(*st),"logfile_apply");
426 st->cl.description="logfile";
429 st->cl.interface=&st->ops;
431 st->ops.log=logfile_log;
432 st->ops.vlog=logfile_vlog;
433 st->f=stderr; /* XXX ignore args */
435 return new_closure(&st->cl);
438 static char *phases[NR_PHASES]={
443 "PHASE_GETRESOURCES",
449 void enter_phase(uint32_t new_phase)
451 struct phase_hook *i;
453 if (hooks[new_phase])
454 Message(M_DEBUG_PHASE,"Running hooks for %s...\n", phases[new_phase]);
455 current_phase=new_phase;
457 for (i=hooks[new_phase]; i; i=i->next)
458 i->fn(i->state, new_phase);
459 Message(M_DEBUG_PHASE,"Now in %s\n",phases[new_phase]);
462 bool_t add_hook(uint32_t phase, hook_fn *fn, void *state)
464 struct phase_hook *h;
466 h=safe_malloc(sizeof(*h),"add_hook");
469 h->next=hooks[phase];
474 bool_t remove_hook(uint32_t phase, hook_fn *fn, void *state)
476 fatal("remove_hook: not implemented\n");
481 void log(struct log_if *lf, int priority, char *message, ...)
485 va_start(ap,message);
486 lf->vlog(lf->st,priority,message,ap);
492 struct buffer_if ops;
495 void buffer_assert_free(struct buffer_if *buffer, string_t file, uint32_t line)
498 fatal("BUF_ASSERT_FREE, %s line %d, owned by %s\n",
499 file,line,buffer->owner);
503 void buffer_assert_used(struct buffer_if *buffer, string_t file, uint32_t line)
506 fatal("BUF_ASSERT_USED, %s line %d, last owned by %s\n",
507 file,line,buffer->owner);
511 void buffer_init(struct buffer_if *buffer, uint32_t max_start_pad)
513 buffer->start=buffer->base+max_start_pad;
517 void *buf_append(struct buffer_if *buf, uint32_t amount) {
519 p=buf->start + buf->size;
524 void *buf_prepend(struct buffer_if *buf, uint32_t amount) {
526 return buf->start-=amount;
529 void *buf_unappend(struct buffer_if *buf, uint32_t amount) {
530 if (buf->size < amount) return 0;
531 return buf->start+(buf->size-=amount);
534 void *buf_unprepend(struct buffer_if *buf, uint32_t amount) {
542 /* Append a two-byte length and the string to the buffer. Length is in
543 network byte order. */
544 void buf_append_string(struct buffer_if *buf, string_t s)
549 buf_append_uint16(buf,len);
550 memcpy(buf_append(buf,len),s,len);
553 void buffer_new(struct buffer_if *buf, uint32_t len)
563 buf->base=safe_malloc(len,"buffer_new");
566 static list_t *buffer_apply(closure_t *self, struct cloc loc, dict_t *context,
572 bool_t lockdown=False;
573 uint32_t len=DEFAULT_BUFFER_SIZE;
575 st=safe_malloc(sizeof(*st),"buffer_apply");
576 st->cl.description="buffer";
577 st->cl.type=CL_BUFFER;
579 st->cl.interface=&st->ops;
581 /* First argument, if present, is buffer length */
582 item=list_elem(args,0);
584 if (item->type!=t_number) {
585 cfgfatal(st->ops.loc,"buffer","first parameter must be a "
586 "number (buffer size)\n");
588 len=item->data.number;
589 if (len<MIN_BUFFER_SIZE) {
590 cfgfatal(st->ops.loc,"buffer","ludicrously small buffer size\n");
592 if (len>MAX_BUFFER_SIZE) {
593 cfgfatal(st->ops.loc,"buffer","ludicrously large buffer size\n");
596 /* Second argument, if present, is a dictionary */
597 item=list_elem(args,1);
599 if (item->type!=t_dict) {
600 cfgfatal(st->ops.loc,"buffer","second parameter must be a "
603 dict=item->data.dict;
604 lockdown=dict_read_bool(dict,"lockdown",False,"buffer",st->ops.loc,
608 buffer_new(&st->ops,len);
610 Message(M_WARNING,"buffer: XXX lockdown\n");
613 return new_closure(&st->cl);
616 init_module util_module;
617 void util_module(dict_t *dict)
619 add_closure(dict,"logfile",logfile_apply);
620 add_closure(dict,"sysbuffer",buffer_apply);