dch / wat-ldns

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locale-dependent output

1 file changed, 20 insertions, 2 deletions

wat.md

2 files changed, 57 insertions

wat.c (file created)

wat.md (file created)

			@@ -1,17 +1,35 @@
	1	+	## macOS
	2	+
1	3		```
2	4		$ uname -a
3	5		Darwin tessier.local 25.5.0 Darwin Kernel Version 25.5.0: Tue Jun 9 22:27:52 PDT 2026; root:xnu-12377.121.10~1/RELEASE_ARM64_T8112 arm64
4	6
5	7		$ sh
6	8		sh-3.2$ cc -o wat wat.c $(ldns-config --cflags --libs) -I$(brew --prefix openssl@3)/include
	9	+
7	10		sh-3.2$ LC_ALL=C ./wat
8	11		LC_CTYPE=C isprint(255)=0
9	12		in example.net. 300 IN TXT "a\255b"
10	13		out 22 61 5c 32 35 35 62 22 <- ASCII, ok
11		-	sh-3.2$
12		-	LC_ALL=e
	14	+
13	15		sh-3.2$ LC_ALL=en_US.UTF-8 ./wat
14	16		LC_CTYPE=en_US.UTF-8 isprint(255)=1
15	17		in example.net. 300 IN TXT "a\255b"
16	18		out 22 61 ff 62 22 <- raw 0xff, expected \255
17	19		```
	20	+
	21	+	## FreeBSD
	22	+
	23	+	```
	24	+	dch@wintermute /tmp> cc -o wat wat.c -L/usr/local/lib -lcrypto -lldns -I/usr/local/include
	25	+
	26	+	dch@wintermute /tmp> LC_ALL=en_US.UTF-8 ./wat
	27	+	LC_CTYPE=en_US.UTF-8 isprint(255)=0
	28	+	in example.net. 300 IN TXT "a\255b"
	29	+	out 22 61 5c 32 35 35 62 22 <- ASCII, ok
	30	+
	31	+	dch@wintermute /tmp> LC_ALL=C ./wat
	32	+	LC_CTYPE=C isprint(255)=0
	33	+	in example.net. 300 IN TXT "a\255b"
	34	+	out 22 61 5c 32 35 35 62 22 <- ASCII, ok
	35	+	```

		@@ -0,0 +1,40 @@
1	+	/*
2	+	* ldns_rdf2str() output depends on the caller's LC_CTYPE.
3	+	*
4	+	* cc -o wat wat.c $(ldns-config --cflags --libs) \
5	+	* -I$(brew --prefix openssl@3)/include
6	+	*
7	+	* LC_ALL=C ./wat
8	+	* LC_ALL=en_US.UTF-8 ./wat
9	+	*/
10	+	#include <ldns/ldns.h>
11	+	#include <ctype.h>
12	+	#include <locale.h>
13	+	#include <stdio.h>
14	+
15	+	int
16	+	main(void)
17	+	{
18	+	ldns_rr *rr = NULL;
19	+	const char *zone = "example.net. 300 IN TXT \"a\\255b\"";
20	+
21	+	/* the Erlang emulator does this on the way up; so do many others */
22	+	printf("LC_CTYPE=%-12s isprint(255)=%d\n", setlocale(LC_CTYPE, ""),
23	+	isprint(255));
24	+
25	+	if (ldns_rr_new_frm_str(&rr, zone, 0, NULL, NULL) != LDNS_STATUS_OK)
26	+	return 1;
27	+
28	+	char *str = ldns_rdf2str(ldns_rr_rdf(rr, 0));
29	+	printf("in %s\nout ", zone);
30	+	for (unsigned char p = (unsigned char )str; *p; p++)
31	+	printf("%02x ", *p);
32	+
33	+	for (unsigned char p = (unsigned char )str; *p; p++)
34	+	if (*p >= 0x80) {
35	+	printf("<- raw 0x%02x, expected \\%03u\n", p, p);
36	+	return 1;
37	+	}
38	+	printf("<- ASCII, ok\n");
39	+	return 0;
40	+	}

		@@ -0,0 +1,17 @@
1	+	```
2	+	$ uname -a
3	+	Darwin tessier.local 25.5.0 Darwin Kernel Version 25.5.0: Tue Jun 9 22:27:52 PDT 2026; root:xnu-12377.121.10~1/RELEASE_ARM64_T8112 arm64
4	+
5	+	$ sh
6	+	sh-3.2$ cc -o wat wat.c $(ldns-config --cflags --libs) -I$(brew --prefix openssl@3)/include
7	+	sh-3.2$ LC_ALL=C ./wat
8	+	LC_CTYPE=C isprint(255)=0
9	+	in example.net. 300 IN TXT "a\255b"
10	+	out 22 61 5c 32 35 35 62 22 <- ASCII, ok
11	+	sh-3.2$
12	+	LC_ALL=e
13	+	sh-3.2$ LC_ALL=en_US.UTF-8 ./wat
14	+	LC_CTYPE=en_US.UTF-8 isprint(255)=1
15	+	in example.net. 300 IN TXT "a\255b"
16	+	out 22 61 ff 62 22 <- raw 0xff, expected \255
17	+	```