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 /* The string buffer must be at least 16 bytes long */
252 string_t ipaddr_to_string(uint32_t addr)
257 s=safe_malloc(16,"ipaddr_to_string");
262 snprintf(s, 16, "%d.%d.%d.%d", a, b, c, d);
266 string_t subnet_to_string(struct subnet *sn)
268 uint32_t mask=sn->mask, addr=sn->prefix;
273 s=safe_malloc(19,"subnet_to_string");
278 for (i=0; mask; i++) {
281 snprintf(s, 19, "%d.%d.%d.%d/%d", a, b, c, d, i);
285 int sys_cmd(const char *path, char *arg, ...)
294 /* Parent -> wait for child */
299 /* Child -> exec command */
302 while ((args[i++]=va_arg(ap,char *)));
307 fatal_perror("sys_cmd(%s,%s,...)");
314 /* Take a list of log closures and merge them */
317 struct loglist *next;
320 static void log_vmulti(void *state, int priority, char *message, va_list args)
322 struct loglist *st=state, *i;
324 for (i=st; i; i=i->next) {
325 i->l->vlog(i->l->st,priority,message,args);
329 static void log_multi(void *st, int priority, char *message, ...)
333 va_start(ap,message);
335 log_vmulti(st,priority,message,ap);
340 struct log_if *init_log(list_t *ll)
345 struct loglist *l=NULL, *n;
348 while ((item=list_elem(ll,i++))) {
349 if (item->type!=t_closure) {
350 cfgfatal(item->loc,"init_log","item is not a closure");
352 cl=item->data.closure;
353 if (cl->type!=CL_LOG) {
354 cfgfatal(item->loc,"init_log","closure is not a logger");
356 n=safe_malloc(sizeof(*n),"init_log");
362 fatal("init_log: none of the items in the list are loggers");
364 r=safe_malloc(sizeof(*r), "init_log");
377 static void logfile_vlog(void *state, int priority, char *message,
380 struct logfile *st=state;
382 vfprintf(st->f,message,args);
386 static void logfile_log(void *state, int priority, char *message, ...)
390 va_start(ap,message);
391 logfile_vlog(state,priority,message,ap);
395 static list_t *logfile_apply(closure_t *self, struct cloc loc, dict_t *context,
400 st=safe_malloc(sizeof(*st),"logfile_apply");
401 st->cl.description="logfile";
404 st->cl.interface=&st->ops;
406 st->ops.log=logfile_log;
407 st->ops.vlog=logfile_vlog;
408 st->f=stderr; /* XXX ignore args */
410 return new_closure(&st->cl);
413 static char *phases[NR_PHASES]={
423 void enter_phase(uint32_t new_phase)
425 struct phase_hook *i;
427 Message(M_DEBUG_PHASE,"entering %s... ", phases[new_phase]);
428 current_phase=new_phase;
430 for (i=hooks[new_phase]; i; i=i->next)
431 i->fn(i->state, new_phase);
432 Message(M_DEBUG_PHASE,"now in %s\n",phases[new_phase]);
435 bool_t add_hook(uint32_t phase, hook_fn *fn, void *state)
437 struct phase_hook *h;
439 h=safe_malloc(sizeof(*h),"add_hook");
442 h->next=hooks[phase];
447 bool_t remove_hook(uint32_t phase, hook_fn *fn, void *state)
449 fatal("remove_hook: not implemented\n");
454 void log(struct log_if *lf, int priority, char *message, ...)
458 va_start(ap,message);
459 lf->vlog(lf->st,priority,message,ap);
465 struct buffer_if ops;
468 void buffer_assert_free(struct buffer_if *buffer, string_t file, uint32_t line)
471 fatal("BUF_ASSERT_FREE, %s line %d, owned by %s\n",
472 file,line,buffer->owner);
476 void buffer_assert_used(struct buffer_if *buffer, string_t file, uint32_t line)
479 fatal("BUF_ASSERT_USED, %s line %d, last owned by %s\n",
480 file,line,buffer->owner);
484 void buffer_init(struct buffer_if *buffer, uint32_t max_start_pad)
486 buffer->start=buffer->base+max_start_pad;
490 void *buf_append(struct buffer_if *buf, uint32_t amount) {
492 p=buf->start + buf->size;
497 void *buf_prepend(struct buffer_if *buf, uint32_t amount) {
499 return buf->start-=amount;
502 void *buf_unappend(struct buffer_if *buf, uint32_t amount) {
503 if (buf->size < amount) return 0;
504 return buf->start+(buf->size-=amount);
507 void *buf_unprepend(struct buffer_if *buf, uint32_t amount) {
515 /* Append a two-byte length and the string to the buffer. Length is in
516 network byte order. */
517 void buf_append_string(struct buffer_if *buf, string_t s)
522 buf_append_uint16(buf,len);
523 memcpy(buf_append(buf,len),s,len);
526 void buffer_new(struct buffer_if *buf, uint32_t len)
536 buf->base=safe_malloc(len,"buffer_new");
539 static list_t *buffer_apply(closure_t *self, struct cloc loc, dict_t *context,
545 bool_t lockdown=False;
546 uint32_t len=DEFAULT_BUFFER_SIZE;
548 st=safe_malloc(sizeof(*st),"buffer_apply");
549 st->cl.description="buffer";
550 st->cl.type=CL_BUFFER;
552 st->cl.interface=&st->ops;
554 /* First argument, if present, is buffer length */
555 item=list_elem(args,0);
557 if (item->type!=t_number) {
558 cfgfatal(st->ops.loc,"buffer","first parameter must be a "
559 "number (buffer size)\n");
561 len=item->data.number;
562 if (len<MIN_BUFFER_SIZE) {
563 cfgfatal(st->ops.loc,"buffer","ludicrously small buffer size\n");
565 if (len>MAX_BUFFER_SIZE) {
566 cfgfatal(st->ops.loc,"buffer","ludicrously large buffer size\n");
569 /* Second argument, if present, is a dictionary */
570 item=list_elem(args,1);
572 if (item->type!=t_dict) {
573 cfgfatal(st->ops.loc,"buffer","second parameter must be a "
576 dict=item->data.dict;
577 lockdown=dict_read_bool(dict,"lockdown",False,"buffer",st->ops.loc,
581 buffer_new(&st->ops,len);
583 Message(M_WARNING,"buffer: XXX lockdown\n");
586 return new_closure(&st->cl);
589 init_module util_module;
590 void util_module(dict_t *dict)
592 add_closure(dict,"logfile",logfile_apply);
593 add_closure(dict,"sysbuffer",buffer_apply);