Warning: Attempt to read property "date" on null in /usr/local/www/websvn.planix.org/blame.php on line 247

Warning: Attempt to read property "msg" on null in /usr/local/www/websvn.planix.org/blame.php on line 247
WebSVN – planix.SVN – Blame – /os/branches/feature_tlsv12/sys/src/cmd/ndb/dnarea.c – Rev 2

Subversion Repositories planix.SVN

Rev

Go to most recent revision | Details | Last modification | View Log | RSS feed

Rev Author Line No. Line
2 - 1 
#include <u.h>
2 
#include <libc.h>
3 
#include <bio.h>
4 
#include <ndb.h>
5 
#include <ip.h>
6 
#include "dns.h"
7 
 
8 
Area *owned, *delegated;
9 
 
10 
/*
11 
 *  true if a name is in our area
12 
 */
13 
Area*
14 
inmyarea(char *name)
15 
{
16 
	int len;
17 
	Area *s, *d;
18 
 
19 
	len = strlen(name);
20 
	for(s = owned; s; s = s->next){
21 
		if(s->len > len)
22 
			continue;
23 
		if(cistrcmp(s->soarr->owner->name, name + len - s->len) == 0)
24 
			if(len == s->len || name[len - s->len - 1] == '.')
25 
				break;
26 
	}
27 
	if(s == nil)
28 
		return nil;
29 
 
30 
	/* name is in area `s' */
31 
	for(d = delegated; d; d = d->next){
32 
		if(d->len > len)
33 
			continue;
34 
		if(cistrcmp(d->soarr->owner->name, name + len - d->len) == 0)
35 
			if(len == d->len || name[len - d->len - 1] == '.')
36 
				return nil; /* name is in a delegated subarea */
37 
	}
38 
 
39 
	return s;	/* name is in area `s' and not in a delegated subarea */
40 
}
41 
 
42 
/*
43 
 *  our area is the part of the domain tree that
44 
 *  we serve
45 
 */
46 
void
47 
addarea(DN *dp, RR *rp, Ndbtuple *t)
48 
{
49 
	Area *s;
50 
	Area **l;
51 
 
52 
	lock(&dnlock);
53 
	if(t->val[0])
54 
		l = &delegated;
55 
	else
56 
		l = &owned;
57 
 
58 
	for (s = *l; s != nil; s = s->next)
59 
		if (strcmp(dp->name, s->soarr->owner->name) == 0) {
60 
			unlock(&dnlock);
61 
			return;		/* we've already got one */
62 
		}
63 
 
64 
	/*
65 
	 *  The area contains a copy of the soa rr that created it.
66 
	 *  The owner of the the soa rr should stick around as long
67 
	 *  as the area does.
68 
	 */
69 
	s = emalloc(sizeof(*s));
70 
	s->len = strlen(dp->name);
71 
	rrcopy(rp, &s->soarr);
72 
	s->soarr->owner = dp;
73 
	s->soarr->db = 1;
74 
	s->soarr->ttl = Hour;
75 
	s->neednotify = 1;
76 
	s->needrefresh = 0;
77 
 
78 
	if (debug)
79 
		dnslog("new area %s %s", dp->name,
80 
			l == &delegated? "delegated": "owned");
81 
 
82 
	s->next = *l;
83 
	*l = s;
84 
	unlock(&dnlock);
85 
}
86 
 
87 
void
88 
freearea(Area **l)
89 
{
90 
	Area *s;
91 
 
92 
	while(s = *l){
93 
		*l = s->next;
94 
		lock(&dnlock);
95 
		rrfree(s->soarr);
96 
		memset(s, 0, sizeof *s);	/* cause trouble */
97 
		unlock(&dnlock);
98 
		free(s);
99 
	}
100 
}
101 
 
102 
/*
103 
 * refresh all areas that need it
104 
 *  this entails running a command 'zonerefreshprogram'.  This could
105 
 *  copy over databases from elsewhere or just do a zone transfer.
106 
 */
107 
void
108 
refresh_areas(Area *s)
109 
{
110 
	int pid;
111 
	Waitmsg *w;
112 
 
113 
	for(; s != nil; s = s->next){
114 
		if(!s->needrefresh)
115 
			continue;
116 
 
117 
		if(zonerefreshprogram == nil){
118 
			s->needrefresh = 0;
119 
			continue;
120 
		}
121 
 
122 
		pid = fork();
123 
		if (pid == -1) {
124 
			sleep(1000);	/* don't fork again immediately */
125 
			continue;
126 
		}
127 
		if (pid == 0){
128 
			execl(zonerefreshprogram, "zonerefresh",
129 
				s->soarr->owner->name, nil);
130 
			exits("exec zonerefresh failed");
131 
		}
132 
		while ((w = wait()) != nil && w->pid != pid)
133 
			free(w);
134 
		if (w && w->pid == pid)
135 
			if(w->msg == nil || *w->msg == '\0')
136 
				s->needrefresh = 0;
137 
		free(w);
138 
	}
139 
}