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  1 5c2e310e 2021-01-22 op /*
  2 a555e0d6 2022-07-04 op  * Copyright (c) 2020, 2022 Omar Polo <op@omarpolo.com>
  3 5c2e310e 2021-01-22 op  *
  4 5c2e310e 2021-01-22 op  * Permission to use, copy, modify, and distribute this software for any
  5 5c2e310e 2021-01-22 op  * purpose with or without fee is hereby granted, provided that the above
  6 5c2e310e 2021-01-22 op  * copyright notice and this permission notice appear in all copies.
  7 5c2e310e 2021-01-22 op  *
  8 5c2e310e 2021-01-22 op  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  9 5c2e310e 2021-01-22 op  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 10 5c2e310e 2021-01-22 op  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 11 5c2e310e 2021-01-22 op  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 12 5c2e310e 2021-01-22 op  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 13 5c2e310e 2021-01-22 op  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 14 5c2e310e 2021-01-22 op  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 15 5c2e310e 2021-01-22 op  */
 16 5c2e310e 2021-01-22 op 
 17 5c2e310e 2021-01-22 op #include <err.h>
 18 5c2e310e 2021-01-22 op #include <stdio.h>
 19 5c2e310e 2021-01-22 op #include <string.h>
 20 5c2e310e 2021-01-22 op 
 21 5c2e310e 2021-01-22 op #include "../gmid.h"
 22 617ae385 2022-07-04 op 
 23 617ae385 2022-07-04 op #define ENCTEST(buf, len, raw, exp)				\
 24 617ae385 2022-07-04 op 	if (encode_path(buf, len, raw) == -1) {			\
 25 617ae385 2022-07-04 op 		fprintf(stderr, "%s:%d: failed to encode: %s\n", \
 26 617ae385 2022-07-04 op 		    __FILE__, __LINE__, raw);			\
 27 617ae385 2022-07-04 op 		exit(1);					\
 28 617ae385 2022-07-04 op 	}							\
 29 617ae385 2022-07-04 op 	if (strcmp(buf, exp) != 0) {				\
 30 617ae385 2022-07-04 op 		fprintf(stderr, "%s:%d: error: "		\
 31 617ae385 2022-07-04 op 		    "unexpected encoding: got %s, want %s\n",	\
 32 617ae385 2022-07-04 op 		    __FILE__, __LINE__, buf, exp);		\
 33 617ae385 2022-07-04 op 		exit(1);					\
 34 617ae385 2022-07-04 op 	}
 35 5c2e310e 2021-01-22 op 
 36 5c2e310e 2021-01-22 op #define TEST(iri, fail, exp, descr)				\
 37 5c2e310e 2021-01-22 op 	if (!run_test(iri, fail, exp)) {			\
 38 5c2e310e 2021-01-22 op 		fprintf(stderr, "%s:%d: error: %s\n",		\
 39 5c2e310e 2021-01-22 op 		    __FILE__, __LINE__, descr);			\
 40 5c2e310e 2021-01-22 op 		exit(1);					\
 41 5c2e310e 2021-01-22 op 	}
 42 5c2e310e 2021-01-22 op 
 43 5c2e310e 2021-01-22 op #define IRI(schema, host, port, path, query, frag)		\
 44 5c2e310e 2021-01-22 op 	((struct iri){(char*)schema, (char*)host, (char*)port,	\
 45 5c2e310e 2021-01-22 op 		 0, (char*)path, (char*)query,			\
 46 5c2e310e 2021-01-22 op 		 (char*)frag})
 47 5c2e310e 2021-01-22 op 
 48 5c2e310e 2021-01-22 op #define DIFF(wanted, got, field)					\
 49 5c2e310e 2021-01-22 op 	if (wanted->field == NULL || got->field == NULL ||		\
 50 5c2e310e 2021-01-22 op 	    strcmp(wanted->field, got->field)) {			\
 51 5c2e310e 2021-01-22 op 		fprintf(stderr, #field ":\n\tgot: %s\n\twanted: %s\n",	\
 52 5c2e310e 2021-01-22 op 		    got->field, wanted->field);				\
 53 5c2e310e 2021-01-22 op 		return 0;						\
 54 5c2e310e 2021-01-22 op 	}
 55 5c2e310e 2021-01-22 op 
 56 5c2e310e 2021-01-22 op #define PASS 0
 57 5c2e310e 2021-01-22 op #define FAIL 1
 58 5c2e310e 2021-01-22 op 
 59 5c2e310e 2021-01-22 op int	diff_iri(struct iri*, struct iri*);
 60 5c2e310e 2021-01-22 op int	run_test(const char*, int, struct iri);
 61 5c2e310e 2021-01-22 op 
 62 5c2e310e 2021-01-22 op int
 63 5c2e310e 2021-01-22 op diff_iri(struct iri *p, struct iri *exp)
 64 5c2e310e 2021-01-22 op {
 65 5c2e310e 2021-01-22 op         DIFF(p, exp, schema);
 66 5c2e310e 2021-01-22 op         DIFF(p, exp, host);
 67 5c2e310e 2021-01-22 op         DIFF(p, exp, port);
 68 5c2e310e 2021-01-22 op         DIFF(p, exp, path);
 69 5c2e310e 2021-01-22 op         DIFF(p, exp, query);
 70 5c2e310e 2021-01-22 op         DIFF(p, exp, fragment);
 71 5c2e310e 2021-01-22 op 	return 1;
 72 5c2e310e 2021-01-22 op }
 73 5c2e310e 2021-01-22 op 
 74 5c2e310e 2021-01-22 op int
 75 5c2e310e 2021-01-22 op run_test(const char *iri, int should_fail, struct iri expected)
 76 5c2e310e 2021-01-22 op {
 77 5c2e310e 2021-01-22 op 	int failed, ok = 1;
 78 5c2e310e 2021-01-22 op 	char *iri_copy;
 79 5c2e310e 2021-01-22 op 	struct iri parsed;
 80 5c2e310e 2021-01-22 op 	const char *error;
 81 5c2e310e 2021-01-22 op 
 82 5c2e310e 2021-01-22 op 	if ((iri_copy = strdup(iri)) == NULL)
 83 5c2e310e 2021-01-22 op 		err(1, "strdup");
 84 5c2e310e 2021-01-22 op 
 85 5c2e310e 2021-01-22 op 	fprintf(stderr, "=> %s\n", iri);
 86 5c2e310e 2021-01-22 op 	failed = !parse_iri(iri_copy, &parsed, &error);
 87 5c2e310e 2021-01-22 op 
 88 5c2e310e 2021-01-22 op 	if (failed && should_fail)
 89 5c2e310e 2021-01-22 op 		goto done;
 90 5c2e310e 2021-01-22 op 
 91 5c2e310e 2021-01-22 op 	if (error != NULL)
 92 5c2e310e 2021-01-22 op 		fprintf(stderr, "> %s\n", error);
 93 5c2e310e 2021-01-22 op 
 94 5c2e310e 2021-01-22 op 	ok = !failed && !should_fail;
 95 5c2e310e 2021-01-22 op 	if (ok)
 96 5c2e310e 2021-01-22 op 		ok = diff_iri(&expected, &parsed);
 97 5c2e310e 2021-01-22 op 
 98 5c2e310e 2021-01-22 op done:
 99 5c2e310e 2021-01-22 op 	free(iri_copy);
100 5c2e310e 2021-01-22 op 	return ok;
101 5c2e310e 2021-01-22 op }
102 5c2e310e 2021-01-22 op 
103 5c2e310e 2021-01-22 op int
104 5c2e310e 2021-01-22 op main(void)
105 5c2e310e 2021-01-22 op {
106 617ae385 2022-07-04 op 	char buf[32];
107 5c2e310e 2021-01-22 op 	struct iri empty = IRI("", "", "", "", "", "");
108 5c2e310e 2021-01-22 op 
109 617ae385 2022-07-04 op 	ENCTEST(buf, sizeof(buf), "hello world", "hello%20world");
110 617ae385 2022-07-04 op 	ENCTEST(buf, sizeof(buf), "hello\nworld", "hello%0Aworld");
111 617ae385 2022-07-04 op 	ENCTEST(buf, sizeof(buf), "hello\r\nworld", "hello%0D%0Aworld");
112 617ae385 2022-07-04 op 
113 5c2e310e 2021-01-22 op 	TEST("http://omarpolo.com",
114 5c2e310e 2021-01-22 op 	    PASS,
115 5c2e310e 2021-01-22 op 	    IRI("http", "omarpolo.com", "", "", "", ""),
116 5c2e310e 2021-01-22 op 	    "can parse iri with empty path");
117 5c2e310e 2021-01-22 op 
118 5c2e310e 2021-01-22 op 	/* schema */
119 5c2e310e 2021-01-22 op 	TEST("omarpolo.com", FAIL, empty, "FAIL when the schema is missing");
120 5c2e310e 2021-01-22 op 	TEST("gemini:/omarpolo.com", FAIL, empty, "FAIL with invalid marker");
121 5c2e310e 2021-01-22 op 	TEST("gemini//omarpolo.com", FAIL, empty, "FAIL with invalid marker");
122 5c2e310e 2021-01-22 op 	TEST("h!!p://omarpolo.com", FAIL, empty, "FAIL with invalid schema");
123 5c2e310e 2021-01-22 op 	TEST("GEMINI://omarpolo.com",
124 5c2e310e 2021-01-22 op 	    PASS,
125 5c2e310e 2021-01-22 op 	    IRI("gemini", "omarpolo.com", "", "", "", ""),
126 5c2e310e 2021-01-22 op 	    "Schemas are case insensitive.");
127 5c2e310e 2021-01-22 op 
128 5c2e310e 2021-01-22 op 	/* authority */
129 5c2e310e 2021-01-22 op 	TEST("gemini://omarpolo.com",
130 5c2e310e 2021-01-22 op 	    PASS,
131 5c2e310e 2021-01-22 op 	    IRI("gemini", "omarpolo.com", "", "", "", ""),
132 5c2e310e 2021-01-22 op 	    "can parse authority with empty path");
133 5c2e310e 2021-01-22 op 	TEST("gemini://omarpolo.com/",
134 5c2e310e 2021-01-22 op 	    PASS,
135 5c2e310e 2021-01-22 op 	    IRI("gemini", "omarpolo.com", "", "", "", ""),
136 5c2e310e 2021-01-22 op 	    "can parse authority with empty path (alt)")
137 5c2e310e 2021-01-22 op 	TEST("gemini://omarpolo.com:1965",
138 5c2e310e 2021-01-22 op 	    PASS,
139 5c2e310e 2021-01-22 op 	    IRI("gemini", "omarpolo.com", "1965", "", "", ""),
140 5c2e310e 2021-01-22 op 	    "can parse with port and empty path");
141 5c2e310e 2021-01-22 op 	TEST("gemini://omarpolo.com:1965/",
142 5c2e310e 2021-01-22 op 	    PASS,
143 5c2e310e 2021-01-22 op 	    IRI("gemini", "omarpolo.com", "1965", "", "", ""),
144 5c2e310e 2021-01-22 op 	    "can parse with port and empty path")
145 5c2e310e 2021-01-22 op 	TEST("gemini://omarpolo.com:196s",
146 5c2e310e 2021-01-22 op 	    FAIL,
147 5c2e310e 2021-01-22 op 	    empty,
148 5c2e310e 2021-01-22 op 	    "FAIL with invalid port number");
149 5c2e310e 2021-01-22 op 	TEST("gemini://OmArPoLo.CoM",
150 5c2e310e 2021-01-22 op 	    PASS,
151 5c2e310e 2021-01-22 op 	    IRI("gemini", "omarpolo.com", "", "", "", ""),
152 5c2e310e 2021-01-22 op 	    "host is case-insensitive");
153 e7c7f19c 2021-01-29 op 	TEST("gemini://xn--nave-6pa.omarpolo.com",
154 e7c7f19c 2021-01-29 op 	    PASS,
155 e7c7f19c 2021-01-29 op 	    IRI("gemini", "xn--nave-6pa.omarpolo.com", "", "", "", ""),
156 e7c7f19c 2021-01-29 op 	    "Can parse punycode-encoded hostnames");
157 e7c7f19c 2021-01-29 op 	TEST("gemini://naïve.omarpolo.com",
158 e7c7f19c 2021-01-29 op 	    PASS,
159 e7c7f19c 2021-01-29 op 	    IRI("gemini", "naïve.omarpolo.com", "", "", "", ""),
160 e7c7f19c 2021-01-29 op 	    "Accept non punycode-encoded hostnames");
161 e7c7f19c 2021-01-29 op 	TEST("gemini://na%c3%afve.omarpolo.com",
162 e7c7f19c 2021-01-29 op 	    PASS,
163 e7c7f19c 2021-01-29 op 	    IRI("gemini", "naïve.omarpolo.com", "", "", "", ""),
164 e7c7f19c 2021-01-29 op 	    "Can percent decode hostnames");
165 5c2e310e 2021-01-22 op 
166 5c2e310e 2021-01-22 op 	/* path */
167 5c2e310e 2021-01-22 op 	TEST("gemini://omarpolo.com/foo/bar/baz",
168 5c2e310e 2021-01-22 op 	    PASS,
169 5c2e310e 2021-01-22 op 	    IRI("gemini", "omarpolo.com", "", "foo/bar/baz", "", ""),
170 5c2e310e 2021-01-22 op 	    "parse simple paths");
171 5c2e310e 2021-01-22 op 	TEST("gemini://omarpolo.com/foo//bar///baz",
172 5c2e310e 2021-01-22 op 	    PASS,
173 5c2e310e 2021-01-22 op 	    IRI("gemini", "omarpolo.com", "", "foo/bar/baz", "", ""),
174 5c2e310e 2021-01-22 op 	    "parse paths with multiple slashes");
175 5c2e310e 2021-01-22 op 	TEST("gemini://omarpolo.com/foo/./bar/./././baz",
176 5c2e310e 2021-01-22 op 	    PASS,
177 5c2e310e 2021-01-22 op 	    IRI("gemini", "omarpolo.com", "", "foo/bar/baz", "", ""),
178 5c2e310e 2021-01-22 op 	    "parse paths with . elements");
179 5c2e310e 2021-01-22 op 	TEST("gemini://omarpolo.com/foo/bar/../bar/baz",
180 5c2e310e 2021-01-22 op 	    PASS,
181 5c2e310e 2021-01-22 op 	    IRI("gemini", "omarpolo.com", "", "foo/bar/baz", "", ""),
182 5c2e310e 2021-01-22 op 	    "parse paths with .. elements");
183 5c2e310e 2021-01-22 op 	TEST("gemini://omarpolo.com/foo/../foo/bar/../bar/baz/../baz",
184 5c2e310e 2021-01-22 op 	    PASS,
185 5c2e310e 2021-01-22 op 	    IRI("gemini", "omarpolo.com", "", "foo/bar/baz", "", ""),
186 5c2e310e 2021-01-22 op 	    "parse paths with multiple .. elements");
187 5c2e310e 2021-01-22 op 	TEST("gemini://omarpolo.com/foo/..",
188 5c2e310e 2021-01-22 op 	    PASS,
189 5c2e310e 2021-01-22 op             IRI("gemini", "omarpolo.com", "", "", "", ""),
190 5c2e310e 2021-01-22 op 	    "parse paths with a trailing ..");
191 5c2e310e 2021-01-22 op 	TEST("gemini://omarpolo.com/foo/../",
192 5c2e310e 2021-01-22 op 	    PASS,
193 5c2e310e 2021-01-22 op             IRI("gemini", "omarpolo.com", "", "", "", ""),
194 5c2e310e 2021-01-22 op 	    "parse paths with a trailing ..");
195 5c2e310e 2021-01-22 op 	TEST("gemini://omarpolo.com/foo/../..",
196 5c2e310e 2021-01-22 op 	    FAIL,
197 5c2e310e 2021-01-22 op             empty,
198 5c2e310e 2021-01-22 op 	    "reject paths that would escape the root");
199 5c2e310e 2021-01-22 op 	TEST("gemini://omarpolo.com/foo/../../",
200 5c2e310e 2021-01-22 op 	    FAIL,
201 5c2e310e 2021-01-22 op             empty,
202 5c2e310e 2021-01-22 op 	    "reject paths that would escape the root")
203 5c2e310e 2021-01-22 op 	TEST("gemini://omarpolo.com/foo/../foo/../././/bar/baz/.././.././/",
204 5c2e310e 2021-01-22 op 	    PASS,
205 5c2e310e 2021-01-22 op             IRI("gemini", "omarpolo.com", "", "", "", ""),
206 5c2e310e 2021-01-22 op 	    "parse path with lots of cleaning available");
207 5c2e310e 2021-01-22 op 	TEST("gemini://omarpolo.com//foo",
208 5c2e310e 2021-01-22 op 	    PASS,
209 5c2e310e 2021-01-22 op             IRI("gemini", "omarpolo.com", "", "foo", "", ""),
210 5c2e310e 2021-01-22 op 	    "Trim initial slashes");
211 5c2e310e 2021-01-22 op 	TEST("gemini://omarpolo.com/////foo",
212 5c2e310e 2021-01-22 op 	    PASS,
213 5c2e310e 2021-01-22 op             IRI("gemini", "omarpolo.com", "", "foo", "", ""),
214 5c2e310e 2021-01-22 op 	    "Trim initial slashes (pt. 2)");
215 9d092b60 2021-04-12 op 	TEST("http://a/b/c/../..",
216 9d092b60 2021-04-12 op 	    PASS,
217 9d092b60 2021-04-12 op 	    IRI("http", "a", "", "", "", ""),
218 9d092b60 2021-04-12 op 	    "avoid infinite loops (see v1.6.1)");
219 5e41063f 2022-07-04 op 	TEST("gemini://example.com/@f:b!(z$&)/baz",
220 5e41063f 2022-07-04 op 	    PASS,
221 5e41063f 2022-07-04 op 	    IRI("gemini", "example.com", "", "@f:b!(z$&)/baz", "", ""),
222 5e41063f 2022-07-04 op 	    "allow @, :, !, (), $ and & in paths");
223 5c2e310e 2021-01-22 op 
224 5c2e310e 2021-01-22 op 	/* query */
225 5c2e310e 2021-01-22 op 	TEST("foo://example.com/foo/?gne",
226 5c2e310e 2021-01-22 op 	    PASS,
227 5c2e310e 2021-01-22 op 	    IRI("foo", "example.com", "", "foo/", "gne", ""),
228 5c2e310e 2021-01-22 op 	    "parse query strings");
229 5c2e310e 2021-01-22 op 	TEST("foo://example.com/foo/?gne&foo",
230 5c2e310e 2021-01-22 op 	    PASS,
231 5c2e310e 2021-01-22 op 	    IRI("foo", "example.com", "", "foo/", "gne&foo", ""),
232 5c2e310e 2021-01-22 op 	    "parse query strings");
233 8404ec30 2021-02-05 op 	/* TEST("foo://example.com/foo/?gne%2F", */
234 8404ec30 2021-02-05 op 	/*     PASS, */
235 8404ec30 2021-02-05 op 	/*     IRI("foo", "example.com", "", "foo/", "gne/", ""), */
236 8404ec30 2021-02-05 op 	/*     "parse query strings"); */
237 4125c94f 2021-02-06 op 	TEST("foo://ex.com/robots.txt?name=foobar&url=https://foo.com",
238 4125c94f 2021-02-06 op 	    PASS,
239 4125c94f 2021-02-06 op 	    IRI("foo", "ex.com", "", "robots.txt", "name=foobar&url=https://foo.com", ""),
240 4125c94f 2021-02-06 op 	    "Accepts : in queries");
241 4125c94f 2021-02-06 op 	TEST("foo://ex.com/foo?email=foo@bar.com#quuz",
242 4125c94f 2021-02-06 op 	    PASS,
243 4125c94f 2021-02-06 op 	    IRI("foo", "ex.com", "", "foo", "email=foo@bar.com", "quuz"),
244 4125c94f 2021-02-06 op 	    "Accepts @ in queries");
245 5c2e310e 2021-01-22 op 
246 5c2e310e 2021-01-22 op 	/* fragment */
247 5c2e310e 2021-01-22 op 	TEST("foo://bar.co/#foo",
248 5c2e310e 2021-01-22 op 	    PASS,
249 5c2e310e 2021-01-22 op 	    IRI("foo", "bar.co", "", "", "", "foo"),
250 5c2e310e 2021-01-22 op 	    "can recognize fragments");
251 5c2e310e 2021-01-22 op 
252 5c2e310e 2021-01-22 op 	/* percent encoding */
253 5c2e310e 2021-01-22 op 	TEST("foo://bar.com/caf%C3%A8.gmi",
254 5c2e310e 2021-01-22 op 	    PASS,
255 5c2e310e 2021-01-22 op 	    IRI("foo", "bar.com", "", "cafè.gmi", "", ""),
256 5c2e310e 2021-01-22 op 	    "can decode");
257 5c2e310e 2021-01-22 op 	TEST("foo://bar.com/caff%C3%A8%20macchiato.gmi",
258 5c2e310e 2021-01-22 op 	    PASS,
259 5c2e310e 2021-01-22 op 	    IRI("foo", "bar.com", "", "caffè macchiato.gmi", "", ""),
260 5c2e310e 2021-01-22 op 	    "can decode");
261 5c2e310e 2021-01-22 op 	TEST("foo://bar.com/caff%C3%A8+macchiato.gmi",
262 5c2e310e 2021-01-22 op 	    PASS,
263 5c2e310e 2021-01-22 op 	    IRI("foo", "bar.com", "", "caffè+macchiato.gmi", "", ""),
264 5c2e310e 2021-01-22 op 	    "can decode");
265 5c2e310e 2021-01-22 op 	TEST("foo://bar.com/foo%2F..%2F..",
266 5c2e310e 2021-01-22 op 	    FAIL,
267 5c2e310e 2021-01-22 op 	    empty,
268 5c2e310e 2021-01-22 op 	    "conversion and checking are done in the correct order");
269 5c2e310e 2021-01-22 op 	TEST("foo://bar.com/foo%00?baz",
270 5c2e310e 2021-01-22 op 	    FAIL,
271 5c2e310e 2021-01-22 op 	    empty,
272 5c2e310e 2021-01-22 op 	    "rejects %00");
273 5c2e310e 2021-01-22 op 
274 5c2e310e 2021-01-22 op 	/* IRI */
275 5c2e310e 2021-01-22 op         TEST("foo://bar.com/cafè.gmi",
276 5c2e310e 2021-01-22 op 	    PASS,
277 5c2e310e 2021-01-22 op 	    IRI("foo", "bar.com", "", "cafè.gmi", "" , ""),
278 5c2e310e 2021-01-22 op 	    "decode IRI (with a 2-byte utf8 seq)");
279 5c2e310e 2021-01-22 op 	TEST("foo://bar.com/世界.gmi",
280 5c2e310e 2021-01-22 op 	    PASS,
281 5c2e310e 2021-01-22 op 	    IRI("foo", "bar.com", "", "世界.gmi", "" , ""),
282 5c2e310e 2021-01-22 op 	    "decode IRI");
283 5c2e310e 2021-01-22 op 	TEST("foo://bar.com/😼.gmi",
284 5c2e310e 2021-01-22 op 	    PASS,
285 5c2e310e 2021-01-22 op 	    IRI("foo", "bar.com", "", "😼.gmi", "" , ""),
286 5c2e310e 2021-01-22 op 	    "decode IRI (with a 3-byte utf8 seq)");
287 5c2e310e 2021-01-22 op 	TEST("foo://bar.com/😼/𤭢.gmi",
288 5c2e310e 2021-01-22 op 	    PASS,
289 5c2e310e 2021-01-22 op 	    IRI("foo", "bar.com", "", "😼/𤭢.gmi", "" , ""),
290 5c2e310e 2021-01-22 op 	    "decode IRI (with a 3-byte and a 4-byte utf8 seq)");
291 5c2e310e 2021-01-22 op 	TEST("foo://bar.com/世界/\xC0\x80",
292 5c2e310e 2021-01-22 op 	    FAIL,
293 5c2e310e 2021-01-22 op 	    empty,
294 5c2e310e 2021-01-22 op 	    "reject invalid sequence (overlong NUL)");
295 5c2e310e 2021-01-22 op 
296 5c2e310e 2021-01-22 op 	return 0;
297 5c2e310e 2021-01-22 op }