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authortb <>2023-05-14 16:36:25 +0000
committertb <>2023-05-14 16:36:25 +0000
commit816eddcf8128dfb5e2e9a4c68c07f2ca97df1275 (patch)
treea797686d0bca2b1add947591c1d23014555744cd
parentcb53eb80a3be6281f322df6ba16c89ac7f7b2109 (diff)
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Send the linebuffer BIO to the attic
*) On VMS, stdout may very well lead to a file that is written to in a record-oriented fashion. That means that every write() will write a separate record, which will be read separately by the programs trying to read from it. This can be very confusing. The solution is to put a BIO filter in the way that will buffer text until a linefeed is reached, and then write everything a line at a time, so every record written will be an actual line, not chunks of lines and not (usually doesn't happen, but I've seen it once) several lines in one record. BIO_f_linebuffer() is the answer. Currently, it's a VMS-only method, because that's where it has been tested well enough. [Richard Levitte] Yeah, no, we don't care about any of this and haven't compiled this file since forever. Looks like tedu's chainsaw got blunt at some point...
Diffstat (limited to '')
-rw-r--r--src/lib/libcrypto/bio/bf_lbuf.c377
1 files changed, 0 insertions, 377 deletions
diff --git a/src/lib/libcrypto/bio/bf_lbuf.c b/src/lib/libcrypto/bio/bf_lbuf.c
deleted file mode 100644
index d65150881c..0000000000
--- a/src/lib/libcrypto/bio/bf_lbuf.c
+++ /dev/null
@@ -1,377 +0,0 @@
1/* $OpenBSD: bf_lbuf.c,v 1.15 2022/01/14 08:40:57 tb Exp $ */
2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3 * All rights reserved.
4 *
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
8 *
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 *
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
22 *
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
25 * are met:
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 *
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51 * SUCH DAMAGE.
52 *
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
57 */
58
59#include <errno.h>
60#include <stdio.h>
61
62#include <openssl/bio.h>
63#include <openssl/evp.h>
64
65static int linebuffer_write(BIO *h, const char *buf, int num);
66static int linebuffer_read(BIO *h, char *buf, int size);
67static int linebuffer_puts(BIO *h, const char *str);
68static int linebuffer_gets(BIO *h, char *str, int size);
69static long linebuffer_ctrl(BIO *h, int cmd, long arg1, void *arg2);
70static int linebuffer_new(BIO *h);
71static int linebuffer_free(BIO *data);
72static long linebuffer_callback_ctrl(BIO *h, int cmd, BIO_info_cb *fp);
73
74/* A 10k maximum should be enough for most purposes */
75#define DEFAULT_LINEBUFFER_SIZE 1024*10
76
77/* #define DEBUG */
78
79static BIO_METHOD methods_linebuffer = {
80 .type = BIO_TYPE_LINEBUFFER,
81 .name = "linebuffer",
82 .bwrite = linebuffer_write,
83 .bread = linebuffer_read,
84 .bputs = linebuffer_puts,
85 .bgets = linebuffer_gets,
86 .ctrl = linebuffer_ctrl,
87 .create = linebuffer_new,
88 .destroy = linebuffer_free,
89 .callback_ctrl = linebuffer_callback_ctrl
90};
91
92BIO_METHOD *
93BIO_f_linebuffer(void)
94{
95 return (&methods_linebuffer);
96}
97
98typedef struct bio_linebuffer_ctx_struct {
99 char *obuf; /* the output char array */
100 int obuf_size; /* how big is the output buffer */
101 int obuf_len; /* how many bytes are in it */
102} BIO_LINEBUFFER_CTX;
103
104static int
105linebuffer_new(BIO *bi)
106{
107 BIO_LINEBUFFER_CTX *ctx;
108
109 ctx = malloc(sizeof(BIO_LINEBUFFER_CTX));
110 if (ctx == NULL)
111 return (0);
112 ctx->obuf = malloc(DEFAULT_LINEBUFFER_SIZE);
113 if (ctx->obuf == NULL) {
114 free(ctx);
115 return (0);
116 }
117 ctx->obuf_size = DEFAULT_LINEBUFFER_SIZE;
118 ctx->obuf_len = 0;
119
120 bi->init = 1;
121 bi->ptr = (char *)ctx;
122 bi->flags = 0;
123 return (1);
124}
125
126static int
127linebuffer_free(BIO *a)
128{
129 BIO_LINEBUFFER_CTX *b;
130
131 if (a == NULL)
132 return (0);
133 b = (BIO_LINEBUFFER_CTX *)a->ptr;
134 free(b->obuf);
135 free(a->ptr);
136 a->ptr = NULL;
137 a->init = 0;
138 a->flags = 0;
139 return (1);
140}
141
142static int
143linebuffer_read(BIO *b, char *out, int outl)
144{
145 int ret = 0;
146
147 if (out == NULL)
148 return (0);
149 if (b->next_bio == NULL)
150 return (0);
151 ret = BIO_read(b->next_bio, out, outl);
152 BIO_clear_retry_flags(b);
153 BIO_copy_next_retry(b);
154 return (ret);
155}
156
157static int
158linebuffer_write(BIO *b, const char *in, int inl)
159{
160 int i, num = 0, foundnl;
161 BIO_LINEBUFFER_CTX *ctx;
162
163 if ((in == NULL) || (inl <= 0))
164 return (0);
165 ctx = (BIO_LINEBUFFER_CTX *)b->ptr;
166 if ((ctx == NULL) || (b->next_bio == NULL))
167 return (0);
168
169 BIO_clear_retry_flags(b);
170
171 do {
172 const char *p;
173
174 for (p = in; p < in + inl && *p != '\n'; p++)
175 ;
176 if (*p == '\n') {
177 p++;
178 foundnl = 1;
179 } else
180 foundnl = 0;
181
182 /* If a NL was found and we already have text in the save
183 buffer, concatenate them and write */
184 while ((foundnl || p - in > ctx->obuf_size - ctx->obuf_len) &&
185 ctx->obuf_len > 0) {
186 int orig_olen = ctx->obuf_len;
187
188 i = ctx->obuf_size - ctx->obuf_len;
189 if (p - in > 0) {
190 if (i >= p - in) {
191 memcpy(&(ctx->obuf[ctx->obuf_len]),
192 in, p - in);
193 ctx->obuf_len += p - in;
194 inl -= p - in;
195 num += p - in;
196 in = p;
197 } else {
198 memcpy(&(ctx->obuf[ctx->obuf_len]),
199 in, i);
200 ctx->obuf_len += i;
201 inl -= i;
202 in += i;
203 num += i;
204 }
205 }
206
207 i = BIO_write(b->next_bio, ctx->obuf, ctx->obuf_len);
208 if (i <= 0) {
209 ctx->obuf_len = orig_olen;
210 BIO_copy_next_retry(b);
211 if (i < 0)
212 return ((num > 0) ? num : i);
213 if (i == 0)
214 return (num);
215 }
216 if (i < ctx->obuf_len)
217 memmove(ctx->obuf, ctx->obuf + i,
218 ctx->obuf_len - i);
219 ctx->obuf_len -= i;
220 }
221
222 /* Now that the save buffer is emptied, let's write the input
223 buffer if a NL was found and there is anything to write. */
224 if ((foundnl || p - in > ctx->obuf_size) && p - in > 0) {
225 i = BIO_write(b->next_bio, in, p - in);
226 if (i <= 0) {
227 BIO_copy_next_retry(b);
228 if (i < 0)
229 return ((num > 0) ? num : i);
230 if (i == 0)
231 return (num);
232 }
233 num += i;
234 in += i;
235 inl -= i;
236 }
237 } while (foundnl && inl > 0);
238 /* We've written as much as we can. The rest of the input buffer, if
239 any, is text that doesn't and with a NL and therefore needs to be
240 saved for the next trip. */
241 if (inl > 0) {
242 memcpy(&(ctx->obuf[ctx->obuf_len]), in, inl);
243 ctx->obuf_len += inl;
244 num += inl;
245 }
246 return num;
247}
248
249static long
250linebuffer_ctrl(BIO *b, int cmd, long num, void *ptr)
251{
252 BIO *dbio;
253 BIO_LINEBUFFER_CTX *ctx;
254 long ret = 1;
255 char *p;
256 int r;
257 int obs;
258
259 ctx = (BIO_LINEBUFFER_CTX *)b->ptr;
260
261 switch (cmd) {
262 case BIO_CTRL_RESET:
263 ctx->obuf_len = 0;
264 if (b->next_bio == NULL)
265 return (0);
266 ret = BIO_ctrl(b->next_bio, cmd, num, ptr);
267 break;
268 case BIO_CTRL_INFO:
269 ret = (long)ctx->obuf_len;
270 break;
271 case BIO_CTRL_WPENDING:
272 ret = (long)ctx->obuf_len;
273 if (ret == 0) {
274 if (b->next_bio == NULL)
275 return (0);
276 ret = BIO_ctrl(b->next_bio, cmd, num, ptr);
277 }
278 break;
279 case BIO_C_SET_BUFF_SIZE:
280 obs = (int)num;
281 p = ctx->obuf;
282 if ((obs > DEFAULT_LINEBUFFER_SIZE) && (obs != ctx->obuf_size)) {
283 p = malloc(num);
284 if (p == NULL)
285 goto malloc_error;
286 }
287 if (ctx->obuf != p) {
288 if (ctx->obuf_len > obs) {
289 ctx->obuf_len = obs;
290 }
291 memcpy(p, ctx->obuf, ctx->obuf_len);
292 free(ctx->obuf);
293 ctx->obuf = p;
294 ctx->obuf_size = obs;
295 }
296 break;
297 case BIO_C_DO_STATE_MACHINE:
298 if (b->next_bio == NULL)
299 return (0);
300 BIO_clear_retry_flags(b);
301 ret = BIO_ctrl(b->next_bio, cmd, num, ptr);
302 BIO_copy_next_retry(b);
303 break;
304
305 case BIO_CTRL_FLUSH:
306 if (b->next_bio == NULL)
307 return (0);
308 if (ctx->obuf_len <= 0) {
309 ret = BIO_ctrl(b->next_bio, cmd, num, ptr);
310 break;
311 }
312
313 for (;;) {
314 BIO_clear_retry_flags(b);
315 if (ctx->obuf_len > 0) {
316 r = BIO_write(b->next_bio,
317 ctx->obuf, ctx->obuf_len);
318 BIO_copy_next_retry(b);
319 if (r <= 0)
320 return ((long)r);
321 if (r < ctx->obuf_len)
322 memmove(ctx->obuf, ctx->obuf + r,
323 ctx->obuf_len - r);
324 ctx->obuf_len -= r;
325 } else {
326 ctx->obuf_len = 0;
327 ret = 1;
328 break;
329 }
330 }
331 ret = BIO_ctrl(b->next_bio, cmd, num, ptr);
332 break;
333 case BIO_CTRL_DUP:
334 dbio = (BIO *)ptr;
335 if (!BIO_set_write_buffer_size(dbio, ctx->obuf_size))
336 ret = 0;
337 break;
338 default:
339 if (b->next_bio == NULL)
340 return (0);
341 ret = BIO_ctrl(b->next_bio, cmd, num, ptr);
342 break;
343 }
344 return (ret);
345malloc_error:
346 BIOerror(ERR_R_MALLOC_FAILURE);
347 return (0);
348}
349
350static long
351linebuffer_callback_ctrl(BIO *b, int cmd, BIO_info_cb *fp)
352{
353 long ret = 1;
354
355 if (b->next_bio == NULL)
356 return (0);
357 switch (cmd) {
358 default:
359 ret = BIO_callback_ctrl(b->next_bio, cmd, fp);
360 break;
361 }
362 return (ret);
363}
364
365static int
366linebuffer_gets(BIO *b, char *buf, int size)
367{
368 if (b->next_bio == NULL)
369 return (0);
370 return (BIO_gets(b->next_bio, buf, size));
371}
372
373static int
374linebuffer_puts(BIO *b, const char *str)
375{
376 return (linebuffer_write(b, str, strlen(str)));
377}
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