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
23 #define MIN_BUFFER_SIZE 64
24 #define DEFAULT_BUFFER_SIZE 4096
25 #define MAX_BUFFER_SIZE 131072
27 static char *hexdigits="0123456789abcdef";
29 uint32_t message_level=M_WARNING|M_ERROR|M_FATAL;
30 uint32_t syslog_level=M_WARNING|M_ERROR|M_FATAL;
31 static uint32_t current_phase=0;
36 struct phase_hook *next;
39 static struct phase_hook *hooks[NR_PHASES]={NULL,};
41 static void vMessage(uint32_t class, char *message, va_list args)
44 if (class & message_level) {
45 if (class&M_FATAL || class&M_ERROR || class&M_WARNING) {
48 vfprintf(dest,message,args);
50 /* XXX do something about syslog output here */
52 /* Maybe send message to syslog */
53 vsprintf(buff, message, args);
54 /* XXX Send each line as a separate log entry */
55 log(syslog_prio[level], buff);
59 void Message(uint32_t class, char *message, ...)
65 vMessage(class,message,ap);
70 static void vfatal(int status, bool_t perror, char *message, va_list args)
76 enter_phase(PHASE_SHUTDOWN);
78 Message(M_FATAL, "secnet fatal error: ");
79 vMessage(M_FATAL, message, args);
80 Message(M_FATAL, ": %s\n",strerror(err));
83 Message(M_FATAL, "secnet fatal error: ");
84 vMessage(M_FATAL,message,args);
89 void fatal(char *message, ...)
92 va_start(args,message);
93 vfatal(current_phase,False,message,args);
97 void fatal_status(int status, char *message, ...)
100 va_start(args,message);
101 vfatal(status,False,message,args);
105 void fatal_perror(char *message, ...)
108 va_start(args,message);
109 vfatal(current_phase,True,message,args);
113 void fatal_perror_status(int status, char *message, ...)
116 va_start(args,message);
117 vfatal(status,True,message,args);
121 void cfgfatal(struct cloc loc, string_t facility, char *message, ...)
125 va_start(args,message);
127 enter_phase(PHASE_SHUTDOWN);
129 if (loc.file && loc.line) {
130 Message(M_FATAL, "config error (%s, %s:%d): ",facility,loc.file,
132 } else if (!loc.file && loc.line) {
133 Message(M_FATAL, "config error (%s, line %d): ",facility,loc.line);
135 Message(M_FATAL, "config error (%s): ",facility);
138 vMessage(M_FATAL,message,args);
143 char *safe_strdup(char *s, char *message)
148 fatal_perror(message);
153 void *safe_malloc(size_t size, char *message)
158 fatal_perror(message);
163 /* Convert a buffer into its MP_INT representation */
164 void read_mpbin(MP_INT *a, uint8_t *bin, int binsize)
169 buff=safe_malloc(binsize*2 + 1,"read_mpbin");
171 for (i=0; i<binsize; i++) {
172 buff[i*2]=hexdigits[(bin[i] & 0xf0) >> 4];
173 buff[i*2+1]=hexdigits[(bin[i] & 0xf)];
177 mpz_set_str(a, buff, 16);
181 /* Convert a MP_INT into a hex string */
182 char *write_mpstring(MP_INT *a)
186 buff=safe_malloc(mpz_sizeinbase(a,16)+2,"write_mpstring");
187 mpz_get_str(buff, 16, a);
191 static uint8_t hexval(uint8_t c)
220 /* Convert a MP_INT into a buffer; return length; truncate if necessary */
221 uint32_t write_mpbin(MP_INT *a, uint8_t *buffer, uint32_t buflen)
226 if (buflen==0) return 0;
227 hb=write_mpstring(a);
232 /* The number starts with a half-byte */
233 buffer[i++]=hexval(hb[j++]);
235 for (; hb[j] && i<buflen; i++) {
236 buffer[i]=(hexval(hb[j])<<4)|hexval(hb[j+1]);
243 bool_t subnet_match(struct subnet_list *list, uint32_t address)
246 for (i=0; i<list->entries; i++) {
247 if (list->list[i].prefix == (address&list->list[i].mask)) return True;
252 /* The string buffer must be at least 16 bytes long */
253 string_t ipaddr_to_string(uint32_t addr)
258 s=safe_malloc(16,"ipaddr_to_string");
263 snprintf(s, 16, "%d.%d.%d.%d", a, b, c, d);
267 string_t subnet_to_string(struct subnet *sn)
269 uint32_t mask=sn->mask, addr=sn->prefix;
274 s=safe_malloc(19,"subnet_to_string");
279 for (i=0; mask; i++) {
282 snprintf(s, 19, "%d.%d.%d.%d/%d", a, b, c, d, i);
286 /* Take a list of log closures and merge them */
289 struct loglist *next;
292 static void log_vmulti(void *state, int priority, char *message, va_list args)
294 struct loglist *st=state, *i;
296 for (i=st; i; i=i->next) {
297 i->l->vlog(i->l->st,priority,message,args);
301 static void log_multi(void *st, int priority, char *message, ...)
305 va_start(ap,message);
307 log_vmulti(st,priority,message,ap);
312 struct log_if *init_log(list_t *ll)
317 struct loglist *l=NULL, *n;
320 while ((item=list_elem(ll,i++))) {
321 if (item->type!=t_closure) {
322 cfgfatal(item->loc,"init_log","item is not a closure");
324 cl=item->data.closure;
325 if (cl->type!=CL_LOG) {
326 cfgfatal(item->loc,"init_log","closure is not a logger");
328 n=safe_malloc(sizeof(*n),"init_log");
334 fatal("init_log: none of the items in the list are loggers");
336 r=safe_malloc(sizeof(*r), "init_log");
349 static void logfile_vlog(void *state, int priority, char *message,
352 struct logfile *st=state;
354 vfprintf(st->f,message,args);
358 static void logfile_log(void *state, int priority, char *message, ...)
362 va_start(ap,message);
363 logfile_vlog(state,priority,message,ap);
367 static list_t *logfile_apply(closure_t *self, struct cloc loc, dict_t *context,
372 st=safe_malloc(sizeof(*st),"logfile_apply");
373 st->cl.description="logfile";
376 st->cl.interface=&st->ops;
378 st->ops.log=logfile_log;
379 st->ops.vlog=logfile_vlog;
380 st->f=stderr; /* XXX ignore args */
382 return new_closure(&st->cl);
385 static char *phases[NR_PHASES]={
395 void enter_phase(uint32_t new_phase)
397 struct phase_hook *i;
399 Message(M_DEBUG_PHASE,"entering %s... ", phases[new_phase]);
400 current_phase=new_phase;
402 for (i=hooks[new_phase]; i; i=i->next)
403 i->fn(i->state, new_phase);
404 Message(M_DEBUG_PHASE,"now in %s\n",phases[new_phase]);
407 bool_t add_hook(uint32_t phase, hook_fn *fn, void *state)
409 struct phase_hook *h;
411 h=safe_malloc(sizeof(*h),"add_hook");
414 h->next=hooks[phase];
419 bool_t remove_hook(uint32_t phase, hook_fn *fn, void *state)
421 fatal("remove_hook: not implemented\n");
426 void log(struct log_if *lf, int priority, char *message, ...)
430 va_start(ap,message);
431 lf->vlog(lf->st,priority,message,ap);
437 struct buffer_if ops;
440 void buffer_assert_free(struct buffer_if *buffer, string_t file, uint32_t line)
443 fatal("BUF_ASSERT_FREE, %s line %d, owned by %s\n",
444 file,line,buffer->owner);
448 void buffer_assert_used(struct buffer_if *buffer, string_t file, uint32_t line)
451 fatal("BUF_ASSERT_USED, %s line %d, last owned by %s\n",
452 file,line,buffer->owner);
456 void buffer_init(struct buffer_if *buffer, uint32_t max_start_pad)
458 buffer->start=buffer->base+max_start_pad;
462 void *buf_append(struct buffer_if *buf, uint32_t amount) {
464 p=buf->start + buf->size;
469 void *buf_prepend(struct buffer_if *buf, uint32_t amount) {
471 return buf->start-=amount;
474 void *buf_unappend(struct buffer_if *buf, uint32_t amount) {
475 if (buf->size < amount) return 0;
476 return buf->start+(buf->size-=amount);
479 void *buf_unprepend(struct buffer_if *buf, uint32_t amount) {
487 /* Append a two-byte length and the string to the buffer. Length is in
488 network byte order. */
489 void buf_append_string(struct buffer_if *buf, string_t s)
494 *(uint16_t *)buf_append(buf,2)=htons(len);
495 memcpy(buf_append(buf,len),s,len);
498 void buffer_new(struct buffer_if *buf, uint32_t len)
508 buf->base=safe_malloc(len,"buffer_new");
511 static list_t *buffer_apply(closure_t *self, struct cloc loc, dict_t *context,
517 bool_t lockdown=False;
519 st=safe_malloc(sizeof(*st),"buffer_apply");
520 st->cl.description="buffer";
521 st->cl.type=CL_BUFFER;
523 st->cl.interface=&st->ops;
529 st->ops.len=DEFAULT_BUFFER_SIZE;
532 /* First argument, if present, is buffer length */
533 item=list_elem(args,0);
535 if (item->type!=t_number) {
536 cfgfatal(st->ops.loc,"buffer","first parameter must be a "
537 "number (buffer size)\n");
539 st->ops.len=item->data.number;
540 if (st->ops.len<MIN_BUFFER_SIZE) {
541 cfgfatal(st->ops.loc,"buffer","ludicrously small buffer size\n");
543 if (st->ops.len>MAX_BUFFER_SIZE) {
544 cfgfatal(st->ops.loc,"buffer","ludicrously large buffer size\n");
547 /* Second argument, if present, is a dictionary */
548 item=list_elem(args,1);
550 if (item->type!=t_dict) {
551 cfgfatal(st->ops.loc,"buffer","second parameter must be a "
554 dict=item->data.dict;
555 lockdown=dict_read_bool(dict,"lockdown",False,"buffer",st->ops.loc,
559 st->ops.base=safe_malloc(st->ops.len,"buffer");
561 Message(M_WARNING,"buffer: XXX lockdown\n");
564 return new_closure(&st->cl);
567 init_module util_module;
568 void util_module(dict_t *dict)
570 add_closure(dict,"logfile",logfile_apply);
571 add_closure(dict,"sysbuffer",buffer_apply);