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WebSVN – planix.SVN – Blame – /os/branches/planix-v0/sys/src/cmd/ndb/mkhosts.c – Rev 2

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#include <u.h>
2 
#include <libc.h>
3 
#include <bio.h>
4 
#include <ndb.h>
5 
#include <ip.h>
6 
 
7 
typedef struct x
8 
{
9 
	Ndbtuple *t;
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	Ndbtuple *it;
11 
	Ndbtuple *nt;
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} X;
13 
 
14 
X x[4096];
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int nx;
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char *domname = "research.att.com";
17 
int domnamlen;
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19 
char*
20 
upper(char *x)
21 
{
22 
	char *p;
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	int c;
24 
 
25 
	for(p = x; c = *p; p++)
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		*p = toupper(c);
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	return x;
28 
}
29 
 
30 
void
31 
printArecord(int fd, X *p)
32 
{
33 
	Ndbtuple *nt;
34 
	char *c;
35 
	char *dom = 0;
36 
	char *curdom = 0;
37 
	int i, cdlen = 0;
38 
	int mxweight = 0;
39 
 
40 
	if(p->nt) {
41 
		return;
42 
	}
43 
	for(nt=p->t; nt; nt = nt->entry) {
44 
		/* we are only going to handle things in the specified domain */
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		c = strchr(nt->val, '.');
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		if (c==0 || strcmp(++c, domname)!=0)
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			continue;
48 
		i = c - nt->val - 1;
49 
		if(strcmp(nt->attr, "dom") == 0) {
50 
			curdom = nt->val;
51 
			cdlen = i;
52 
			if (dom == 0) {
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				dom = curdom;
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				fprint(fd, "%-.*s%.*s	IN A	%s\n", i, nt->val, 15-i, "               ", p->it->val);
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			} else
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				fprint(fd, "%-.*s%.*s	IN CNAME	%s.\n", i, nt->val, 15-i, "               ", dom);
57 
		} else if(strcmp(nt->attr, "mx") == 0) {
58 
			if (curdom != 0)
59 
				fprint(fd, "%-.*s%.*s	MX	%d	%s.\n", cdlen, curdom, 15-cdlen, "               ", mxweight++, nt->val);
60 
		}
61 
	}
62 
}
63 
 
64 
void
65 
printentry(int fd, X *p)
66 
{
67 
	Ndbtuple *nt;
68 
 
69 
	if(p->nt)
70 
		return;
71 
	fprint(fd, "%s	", p->it->val);
72 
	for(nt = p->t; nt; nt = nt->entry)
73 
		if(strcmp(nt->attr, "dom") == 0)
74 
			fprint(fd, " %s", nt->val);
75 
	for(nt = p->t; nt; nt = nt->entry)
76 
		if(strcmp(nt->attr, "sys") == 0)
77 
			fprint(fd, " %s", nt->val);
78 
	fprint(fd, "\n");
79 
}
80 
 
81 
void
82 
printsys(int fd, X *p)
83 
{
84 
	Ndbtuple *nt;
85 
 
86 
	for(nt = p->t; nt; nt = nt->entry)
87 
		if(strcmp(nt->attr, "dom") == 0)
88 
			fprint(fd, "%s\n", nt->val);
89 
}
90 
 
91 
void
92 
printtxt(int fd, X *p)
93 
{
94 
	int i;
95 
	Ndbtuple *nt;
96 
 
97 
	if(p->nt){
98 
		for(;;){
99 
			i = strlen(p->it->val);
100 
			if(strcmp(p->it->val+i-2, ".0") == 0)
101 
				p->it->val[i-2] = 0;
102 
			else
103 
				break;
104 
		}
105 
		fprint(fd, "\nNET : %s : %s\n", p->it->val, upper(p->nt->val));
106 
		return;
107 
	}
108 
	fprint(fd, "HOST : %s :", p->it->val);
109 
	i = 0;
110 
	for(nt = p->t; nt; nt = nt->entry)
111 
		if(strcmp(nt->attr, "dom") == 0){
112 
			if(i++ == 0)
113 
				fprint(fd, " %s", upper(nt->val));
114 
			else
115 
				fprint(fd, ", %s", upper(nt->val));
116 
		}
117 
	fprint(fd, "\n");
118 
}
119 
 
120 
void
121 
parse(char *file)
122 
{
123 
	int i;
124 
	Ndb *db;
125 
	Ndbtuple *t, *nt, *tt, *ipnett;
126 
	char *p;
127 
 
128 
	db = ndbopen(file);
129 
	if(db == 0)
130 
		exits("no database");
131 
	while(t = ndbparse(db)){
132 
		for(nt = t; nt; nt = nt->entry){
133 
			if(strcmp(nt->attr, "ip") == 0)
134 
				break;
135 
			if(strcmp(nt->attr, "flavor") == 0
136 
			&& strcmp(nt->val, "console") == 0)
137 
				return;
138 
		}
139 
		if(nt == 0){
140 
			ndbfree(t);
141 
			continue;
142 
		}
143 
 
144 
		/* dump anything not on our nets */
145 
		ipnett = 0;
146 
		for(tt = t; tt; tt = tt->entry){
147 
			if(strcmp(tt->attr, "ipnet") == 0){
148 
				ipnett = tt;
149 
				break;
150 
			}
151 
			if(strcmp(tt->attr, "dom") == 0){
152 
				i = strlen(tt->val);
153 
				p = tt->val+i-domnamlen;
154 
				if(p >= tt->val && strcmp(p, domname) == 0)
155 
					break;
156 
			}
157 
		}
158 
		if(tt == 0){
159 
			ndbfree(t);
160 
			continue;
161 
		}
162 
 
163 
		for(; nt; nt = nt->entry){
164 
			if(strcmp(nt->attr, "ip") != 0)
165 
				continue;
166 
			x[nx].it = nt;
167 
			x[nx].nt = ipnett;
168 
			x[nx++].t = t;
169 
		}
170 
	}
171 
}
172 
 
173 
void
174 
main(int argc, char *argv[])
175 
{
176 
	int i, fd;
177 
	char fn[128];
178 
 
179 
	if (argc>1)
180 
		domname = argv[1];
181 
	domnamlen = strlen(domname);
182 
	if(argc > 2){
183 
		for(i = 2; i < argc; i++)
184 
			parse(argv[i]);
185 
	} else {
186 
		parse("/lib/ndb/local");
187 
		parse("/lib/ndb/friends");
188 
	}
189 
 
190 
//	sprint(fn, "/lib/ndb/hosts.%-.21s", domname);
191 
//	fd = create(fn, OWRITE, 0664);
192 
//	if(fd < 0){
193 
//		fprint(2, "can't create %s: %r\n", fn);
194 
//		exits("boom");
195 
//	}
196 
//	for(i = 0; i < nx; i++)
197 
//		printentry(fd, &x[i]);
198 
//	close(fd);
199 
//
200 
 
201 
	sprint(fn, "/lib/ndb/db.%-.24s", domname);
202 
	fd = create(fn, OWRITE, 0664);
203 
	if(fd < 0){
204 
		fprint(2, "can't create %s: %r\n", fn);
205 
		exits("boom");
206 
	}
207 
	fprint(fd, "; This file is generated automatically, do not edit!\n");
208 
	for(i = 0; i < nx; i++)
209 
		printArecord(fd, &x[i]);
210 
	close(fd);
211 
 
212 
	sprint(fn, "/lib/ndb/equiv.%-.21s", domname);
213 
	fd = create(fn, OWRITE, 0664);
214 
	if(fd < 0){
215 
		fprint(2, "can't create %s: %r\n", fn);
216 
		exits("boom");
217 
	}
218 
	for(i = 0; i < nx; i++)
219 
		printsys(fd, &x[i]);
220 
	close(fd);
221 
 
222 
	sprint(fn, "/lib/ndb/txt.%-.23s", domname);
223 
	fd = create(fn, OWRITE, 0664);
224 
	if(fd < 0){
225 
		fprint(2, "can't create %s: %r\n", fn);
226 
		exits("boom");
227 
	}
228 
	for(i = 0; i < nx; i++)
229 
		printtxt(fd, &x[i]);
230 
	close(fd);
231 
 
232 
	exits(0);
233 
}