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Commit | Line | Data |
---|---|---|
62867571 | 1 | /* |
b0edda11 | 2 | * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved. |
d02b48c6 | 3 | * |
62867571 RS |
4 | * Licensed under the OpenSSL license (the "License"). You may not use |
5 | * this file except in compliance with the License. You can obtain a copy | |
6 | * in the file LICENSE in the source distribution or at | |
7 | * https://www.openssl.org/source/license.html | |
d02b48c6 RE |
8 | */ |
9 | ||
10 | #include <stdio.h> | |
11 | #include <errno.h> | |
b39fc560 | 12 | #include "internal/cryptlib.h" |
ec577822 BM |
13 | #include <openssl/buffer.h> |
14 | #include <openssl/evp.h> | |
a146ae55 | 15 | #include "internal/bio.h" |
d02b48c6 | 16 | |
0e1c0612 UM |
17 | static int b64_write(BIO *h, const char *buf, int num); |
18 | static int b64_read(BIO *h, char *buf, int size); | |
cb877ccb | 19 | static int b64_puts(BIO *h, const char *str); |
0e1c0612 | 20 | static long b64_ctrl(BIO *h, int cmd, long arg1, void *arg2); |
d02b48c6 RE |
21 | static int b64_new(BIO *h); |
22 | static int b64_free(BIO *data); | |
fce78bd4 | 23 | static long b64_callback_ctrl(BIO *h, int cmd, BIO_info_cb *fp); |
0f113f3e MC |
24 | #define B64_BLOCK_SIZE 1024 |
25 | #define B64_BLOCK_SIZE2 768 | |
26 | #define B64_NONE 0 | |
27 | #define B64_ENCODE 1 | |
28 | #define B64_DECODE 2 | |
29 | ||
30 | typedef struct b64_struct { | |
31 | /* | |
32 | * BIO *bio; moved to the BIO structure | |
33 | */ | |
34 | int buf_len; | |
35 | int buf_off; | |
36 | int tmp_len; /* used to find the start when decoding */ | |
37 | int tmp_nl; /* If true, scan until '\n' */ | |
38 | int encode; | |
39 | int start; /* have we started decoding yet? */ | |
40 | int cont; /* <= 0 when finished */ | |
b518d2d5 | 41 | EVP_ENCODE_CTX *base64; |
0f113f3e MC |
42 | char buf[EVP_ENCODE_LENGTH(B64_BLOCK_SIZE) + 10]; |
43 | char tmp[B64_BLOCK_SIZE]; | |
44 | } BIO_B64_CTX; | |
45 | ||
04f6b0fd | 46 | static const BIO_METHOD methods_b64 = { |
27ab9195 DB |
47 | BIO_TYPE_BASE64, |
48 | "base64 encoding", | |
3befffa3 MC |
49 | /* TODO: Convert to new style write function */ |
50 | bwrite_conv, | |
0f113f3e | 51 | b64_write, |
d07aee2c MC |
52 | /* TODO: Convert to new style read function */ |
53 | bread_conv, | |
0f113f3e MC |
54 | b64_read, |
55 | b64_puts, | |
56 | NULL, /* b64_gets, */ | |
57 | b64_ctrl, | |
58 | b64_new, | |
59 | b64_free, | |
60 | b64_callback_ctrl, | |
61 | }; | |
d02b48c6 | 62 | |
a146ae55 | 63 | |
04f6b0fd | 64 | const BIO_METHOD *BIO_f_base64(void) |
0f113f3e | 65 | { |
a146ae55 | 66 | return &methods_b64; |
0f113f3e | 67 | } |
d02b48c6 | 68 | |
6b691a5c | 69 | static int b64_new(BIO *bi) |
0f113f3e MC |
70 | { |
71 | BIO_B64_CTX *ctx; | |
72 | ||
64b25758 | 73 | ctx = OPENSSL_zalloc(sizeof(*ctx)); |
0f113f3e | 74 | if (ctx == NULL) |
cb1d435c | 75 | return 0; |
0f113f3e | 76 | |
0f113f3e MC |
77 | ctx->cont = 1; |
78 | ctx->start = 1; | |
e0d32e98 | 79 | ctx->base64 = EVP_ENCODE_CTX_new(); |
cb1d435c MRA |
80 | if (ctx->base64 == NULL) { |
81 | OPENSSL_free(ctx); | |
82 | return 0; | |
83 | } | |
84 | ||
a146ae55 MC |
85 | BIO_set_data(bi, ctx); |
86 | BIO_set_init(bi, 1); | |
87 | ||
88 | return 1; | |
0f113f3e | 89 | } |
d02b48c6 | 90 | |
6b691a5c | 91 | static int b64_free(BIO *a) |
0f113f3e | 92 | { |
a146ae55 | 93 | BIO_B64_CTX *ctx; |
0f113f3e | 94 | if (a == NULL) |
a146ae55 MC |
95 | return 0; |
96 | ||
97 | ctx = BIO_get_data(a); | |
98 | if (ctx == NULL) | |
99 | return 0; | |
100 | ||
101 | EVP_ENCODE_CTX_free(ctx->base64); | |
102 | OPENSSL_free(ctx); | |
103 | BIO_set_data(a, NULL); | |
104 | BIO_set_init(a, 0); | |
105 | ||
106 | return 1; | |
0f113f3e MC |
107 | } |
108 | ||
6b691a5c | 109 | static int b64_read(BIO *b, char *out, int outl) |
0f113f3e MC |
110 | { |
111 | int ret = 0, i, ii, j, k, x, n, num, ret_code = 0; | |
112 | BIO_B64_CTX *ctx; | |
113 | unsigned char *p, *q; | |
a146ae55 | 114 | BIO *next; |
0f113f3e MC |
115 | |
116 | if (out == NULL) | |
26a7d938 | 117 | return 0; |
a146ae55 | 118 | ctx = (BIO_B64_CTX *)BIO_get_data(b); |
0f113f3e | 119 | |
a146ae55 MC |
120 | next = BIO_next(b); |
121 | if ((ctx == NULL) || (next == NULL)) | |
122 | return 0; | |
0f113f3e MC |
123 | |
124 | BIO_clear_retry_flags(b); | |
125 | ||
126 | if (ctx->encode != B64_DECODE) { | |
127 | ctx->encode = B64_DECODE; | |
128 | ctx->buf_len = 0; | |
129 | ctx->buf_off = 0; | |
130 | ctx->tmp_len = 0; | |
b518d2d5 | 131 | EVP_DecodeInit(ctx->base64); |
0f113f3e MC |
132 | } |
133 | ||
134 | /* First check if there are bytes decoded/encoded */ | |
135 | if (ctx->buf_len > 0) { | |
136 | OPENSSL_assert(ctx->buf_len >= ctx->buf_off); | |
137 | i = ctx->buf_len - ctx->buf_off; | |
138 | if (i > outl) | |
139 | i = outl; | |
140 | OPENSSL_assert(ctx->buf_off + i < (int)sizeof(ctx->buf)); | |
141 | memcpy(out, &(ctx->buf[ctx->buf_off]), i); | |
142 | ret = i; | |
143 | out += i; | |
144 | outl -= i; | |
145 | ctx->buf_off += i; | |
146 | if (ctx->buf_len == ctx->buf_off) { | |
147 | ctx->buf_len = 0; | |
148 | ctx->buf_off = 0; | |
149 | } | |
150 | } | |
151 | ||
152 | /* | |
153 | * At this point, we have room of outl bytes and an empty buffer, so we | |
154 | * should read in some more. | |
155 | */ | |
156 | ||
157 | ret_code = 0; | |
158 | while (outl > 0) { | |
159 | if (ctx->cont <= 0) | |
160 | break; | |
161 | ||
a146ae55 | 162 | i = BIO_read(next, &(ctx->tmp[ctx->tmp_len]), |
0f113f3e MC |
163 | B64_BLOCK_SIZE - ctx->tmp_len); |
164 | ||
165 | if (i <= 0) { | |
166 | ret_code = i; | |
167 | ||
168 | /* Should we continue next time we are called? */ | |
a146ae55 | 169 | if (!BIO_should_retry(next)) { |
0f113f3e MC |
170 | ctx->cont = i; |
171 | /* If buffer empty break */ | |
172 | if (ctx->tmp_len == 0) | |
173 | break; | |
174 | /* Fall through and process what we have */ | |
175 | else | |
176 | i = 0; | |
177 | } | |
178 | /* else we retry and add more data to buffer */ | |
179 | else | |
180 | break; | |
181 | } | |
182 | i += ctx->tmp_len; | |
183 | ctx->tmp_len = i; | |
184 | ||
185 | /* | |
186 | * We need to scan, a line at a time until we have a valid line if we | |
187 | * are starting. | |
188 | */ | |
189 | if (ctx->start && (BIO_get_flags(b) & BIO_FLAGS_BASE64_NO_NL)) { | |
190 | /* ctx->start=1; */ | |
191 | ctx->tmp_len = 0; | |
192 | } else if (ctx->start) { | |
193 | q = p = (unsigned char *)ctx->tmp; | |
194 | num = 0; | |
195 | for (j = 0; j < i; j++) { | |
196 | if (*(q++) != '\n') | |
197 | continue; | |
198 | ||
199 | /* | |
200 | * due to a previous very long line, we need to keep on | |
201 | * scanning for a '\n' before we even start looking for | |
202 | * base64 encoded stuff. | |
203 | */ | |
204 | if (ctx->tmp_nl) { | |
205 | p = q; | |
206 | ctx->tmp_nl = 0; | |
207 | continue; | |
208 | } | |
209 | ||
b518d2d5 | 210 | k = EVP_DecodeUpdate(ctx->base64, |
0f113f3e MC |
211 | (unsigned char *)ctx->buf, |
212 | &num, p, q - p); | |
213 | if ((k <= 0) && (num == 0) && (ctx->start)) | |
b518d2d5 | 214 | EVP_DecodeInit(ctx->base64); |
0f113f3e MC |
215 | else { |
216 | if (p != (unsigned char *) | |
217 | &(ctx->tmp[0])) { | |
218 | i -= (p - (unsigned char *) | |
219 | &(ctx->tmp[0])); | |
220 | for (x = 0; x < i; x++) | |
221 | ctx->tmp[x] = p[x]; | |
222 | } | |
b518d2d5 | 223 | EVP_DecodeInit(ctx->base64); |
0f113f3e MC |
224 | ctx->start = 0; |
225 | break; | |
226 | } | |
227 | p = q; | |
228 | } | |
229 | ||
230 | /* we fell off the end without starting */ | |
231 | if ((j == i) && (num == 0)) { | |
232 | /* | |
233 | * Is this is one long chunk?, if so, keep on reading until a | |
234 | * new line. | |
235 | */ | |
236 | if (p == (unsigned char *)&(ctx->tmp[0])) { | |
237 | /* Check buffer full */ | |
238 | if (i == B64_BLOCK_SIZE) { | |
239 | ctx->tmp_nl = 1; | |
240 | ctx->tmp_len = 0; | |
241 | } | |
242 | } else if (p != q) { /* finished on a '\n' */ | |
243 | n = q - p; | |
244 | for (ii = 0; ii < n; ii++) | |
245 | ctx->tmp[ii] = p[ii]; | |
246 | ctx->tmp_len = n; | |
247 | } | |
248 | /* else finished on a '\n' */ | |
249 | continue; | |
250 | } else { | |
251 | ctx->tmp_len = 0; | |
252 | } | |
253 | } else if ((i < B64_BLOCK_SIZE) && (ctx->cont > 0)) { | |
254 | /* | |
255 | * If buffer isn't full and we can retry then restart to read in | |
256 | * more data. | |
257 | */ | |
258 | continue; | |
259 | } | |
260 | ||
261 | if (BIO_get_flags(b) & BIO_FLAGS_BASE64_NO_NL) { | |
262 | int z, jj; | |
58964a49 | 263 | |
0f113f3e | 264 | jj = i & ~3; /* process per 4 */ |
0f113f3e MC |
265 | z = EVP_DecodeBlock((unsigned char *)ctx->buf, |
266 | (unsigned char *)ctx->tmp, jj); | |
267 | if (jj > 2) { | |
268 | if (ctx->tmp[jj - 1] == '=') { | |
269 | z--; | |
270 | if (ctx->tmp[jj - 2] == '=') | |
271 | z--; | |
272 | } | |
273 | } | |
274 | /* | |
275 | * z is now number of output bytes and jj is the number consumed | |
276 | */ | |
277 | if (jj != i) { | |
278 | memmove(ctx->tmp, &ctx->tmp[jj], i - jj); | |
279 | ctx->tmp_len = i - jj; | |
280 | } | |
281 | ctx->buf_len = 0; | |
282 | if (z > 0) { | |
283 | ctx->buf_len = z; | |
284 | } | |
285 | i = z; | |
286 | } else { | |
b518d2d5 | 287 | i = EVP_DecodeUpdate(ctx->base64, |
0f113f3e MC |
288 | (unsigned char *)ctx->buf, &ctx->buf_len, |
289 | (unsigned char *)ctx->tmp, i); | |
290 | ctx->tmp_len = 0; | |
291 | } | |
d070b4ae DMSP |
292 | /* |
293 | * If eof or an error was signalled, then the condition | |
294 | * 'ctx->cont <= 0' will prevent b64_read() from reading | |
295 | * more data on subsequent calls. This assignment was | |
296 | * deleted accidentally in commit 5562cfaca4f3. | |
297 | */ | |
298 | ctx->cont = i; | |
299 | ||
0f113f3e MC |
300 | ctx->buf_off = 0; |
301 | if (i < 0) { | |
302 | ret_code = 0; | |
303 | ctx->buf_len = 0; | |
304 | break; | |
305 | } | |
306 | ||
307 | if (ctx->buf_len <= outl) | |
308 | i = ctx->buf_len; | |
309 | else | |
310 | i = outl; | |
311 | ||
312 | memcpy(out, ctx->buf, i); | |
313 | ret += i; | |
314 | ctx->buf_off = i; | |
315 | if (ctx->buf_off == ctx->buf_len) { | |
316 | ctx->buf_len = 0; | |
317 | ctx->buf_off = 0; | |
318 | } | |
319 | outl -= i; | |
320 | out += i; | |
321 | } | |
322 | /* BIO_clear_retry_flags(b); */ | |
323 | BIO_copy_next_retry(b); | |
324 | return ((ret == 0) ? ret_code : ret); | |
325 | } | |
d02b48c6 | 326 | |
0e1c0612 | 327 | static int b64_write(BIO *b, const char *in, int inl) |
0f113f3e MC |
328 | { |
329 | int ret = 0; | |
330 | int n; | |
331 | int i; | |
332 | BIO_B64_CTX *ctx; | |
a146ae55 MC |
333 | BIO *next; |
334 | ||
335 | ctx = (BIO_B64_CTX *)BIO_get_data(b); | |
336 | next = BIO_next(b); | |
337 | if ((ctx == NULL) || (next == NULL)) | |
338 | return 0; | |
0f113f3e | 339 | |
0f113f3e MC |
340 | BIO_clear_retry_flags(b); |
341 | ||
342 | if (ctx->encode != B64_ENCODE) { | |
343 | ctx->encode = B64_ENCODE; | |
344 | ctx->buf_len = 0; | |
345 | ctx->buf_off = 0; | |
346 | ctx->tmp_len = 0; | |
b518d2d5 | 347 | EVP_EncodeInit(ctx->base64); |
0f113f3e MC |
348 | } |
349 | ||
350 | OPENSSL_assert(ctx->buf_off < (int)sizeof(ctx->buf)); | |
351 | OPENSSL_assert(ctx->buf_len <= (int)sizeof(ctx->buf)); | |
352 | OPENSSL_assert(ctx->buf_len >= ctx->buf_off); | |
353 | n = ctx->buf_len - ctx->buf_off; | |
354 | while (n > 0) { | |
a146ae55 | 355 | i = BIO_write(next, &(ctx->buf[ctx->buf_off]), n); |
0f113f3e MC |
356 | if (i <= 0) { |
357 | BIO_copy_next_retry(b); | |
26a7d938 | 358 | return i; |
0f113f3e MC |
359 | } |
360 | OPENSSL_assert(i <= n); | |
361 | ctx->buf_off += i; | |
362 | OPENSSL_assert(ctx->buf_off <= (int)sizeof(ctx->buf)); | |
363 | OPENSSL_assert(ctx->buf_len >= ctx->buf_off); | |
364 | n -= i; | |
365 | } | |
366 | /* at this point all pending data has been written */ | |
367 | ctx->buf_off = 0; | |
368 | ctx->buf_len = 0; | |
369 | ||
370 | if ((in == NULL) || (inl <= 0)) | |
26a7d938 | 371 | return 0; |
0f113f3e MC |
372 | |
373 | while (inl > 0) { | |
374 | n = (inl > B64_BLOCK_SIZE) ? B64_BLOCK_SIZE : inl; | |
375 | ||
376 | if (BIO_get_flags(b) & BIO_FLAGS_BASE64_NO_NL) { | |
377 | if (ctx->tmp_len > 0) { | |
378 | OPENSSL_assert(ctx->tmp_len <= 3); | |
379 | n = 3 - ctx->tmp_len; | |
380 | /* | |
381 | * There's a theoretical possibility for this | |
382 | */ | |
383 | if (n > inl) | |
384 | n = inl; | |
385 | memcpy(&(ctx->tmp[ctx->tmp_len]), in, n); | |
386 | ctx->tmp_len += n; | |
387 | ret += n; | |
388 | if (ctx->tmp_len < 3) | |
389 | break; | |
390 | ctx->buf_len = | |
391 | EVP_EncodeBlock((unsigned char *)ctx->buf, | |
392 | (unsigned char *)ctx->tmp, ctx->tmp_len); | |
393 | OPENSSL_assert(ctx->buf_len <= (int)sizeof(ctx->buf)); | |
394 | OPENSSL_assert(ctx->buf_len >= ctx->buf_off); | |
395 | /* | |
396 | * Since we're now done using the temporary buffer, the | |
397 | * length should be 0'd | |
398 | */ | |
399 | ctx->tmp_len = 0; | |
400 | } else { | |
401 | if (n < 3) { | |
402 | memcpy(ctx->tmp, in, n); | |
403 | ctx->tmp_len = n; | |
404 | ret += n; | |
405 | break; | |
406 | } | |
407 | n -= n % 3; | |
408 | ctx->buf_len = | |
409 | EVP_EncodeBlock((unsigned char *)ctx->buf, | |
410 | (const unsigned char *)in, n); | |
411 | OPENSSL_assert(ctx->buf_len <= (int)sizeof(ctx->buf)); | |
412 | OPENSSL_assert(ctx->buf_len >= ctx->buf_off); | |
413 | ret += n; | |
414 | } | |
415 | } else { | |
cf3404fc MC |
416 | if (!EVP_EncodeUpdate(ctx->base64, |
417 | (unsigned char *)ctx->buf, &ctx->buf_len, | |
418 | (unsigned char *)in, n)) | |
419 | return ((ret == 0) ? -1 : ret); | |
0f113f3e MC |
420 | OPENSSL_assert(ctx->buf_len <= (int)sizeof(ctx->buf)); |
421 | OPENSSL_assert(ctx->buf_len >= ctx->buf_off); | |
422 | ret += n; | |
423 | } | |
424 | inl -= n; | |
425 | in += n; | |
426 | ||
427 | ctx->buf_off = 0; | |
428 | n = ctx->buf_len; | |
429 | while (n > 0) { | |
a146ae55 | 430 | i = BIO_write(next, &(ctx->buf[ctx->buf_off]), n); |
0f113f3e MC |
431 | if (i <= 0) { |
432 | BIO_copy_next_retry(b); | |
433 | return ((ret == 0) ? i : ret); | |
434 | } | |
435 | OPENSSL_assert(i <= n); | |
436 | n -= i; | |
437 | ctx->buf_off += i; | |
438 | OPENSSL_assert(ctx->buf_off <= (int)sizeof(ctx->buf)); | |
439 | OPENSSL_assert(ctx->buf_len >= ctx->buf_off); | |
440 | } | |
441 | ctx->buf_len = 0; | |
442 | ctx->buf_off = 0; | |
443 | } | |
26a7d938 | 444 | return ret; |
0f113f3e | 445 | } |
d02b48c6 | 446 | |
0e1c0612 | 447 | static long b64_ctrl(BIO *b, int cmd, long num, void *ptr) |
0f113f3e MC |
448 | { |
449 | BIO_B64_CTX *ctx; | |
450 | long ret = 1; | |
451 | int i; | |
a146ae55 | 452 | BIO *next; |
0f113f3e | 453 | |
a146ae55 MC |
454 | ctx = (BIO_B64_CTX *)BIO_get_data(b); |
455 | next = BIO_next(b); | |
456 | if ((ctx == NULL) || (next == NULL)) | |
457 | return 0; | |
0f113f3e MC |
458 | |
459 | switch (cmd) { | |
460 | case BIO_CTRL_RESET: | |
461 | ctx->cont = 1; | |
462 | ctx->start = 1; | |
463 | ctx->encode = B64_NONE; | |
a146ae55 | 464 | ret = BIO_ctrl(next, cmd, num, ptr); |
0f113f3e MC |
465 | break; |
466 | case BIO_CTRL_EOF: /* More to read */ | |
467 | if (ctx->cont <= 0) | |
468 | ret = 1; | |
469 | else | |
a146ae55 | 470 | ret = BIO_ctrl(next, cmd, num, ptr); |
0f113f3e MC |
471 | break; |
472 | case BIO_CTRL_WPENDING: /* More to write in buffer */ | |
473 | OPENSSL_assert(ctx->buf_len >= ctx->buf_off); | |
474 | ret = ctx->buf_len - ctx->buf_off; | |
475 | if ((ret == 0) && (ctx->encode != B64_NONE) | |
b518d2d5 | 476 | && (EVP_ENCODE_CTX_num(ctx->base64) != 0)) |
0f113f3e MC |
477 | ret = 1; |
478 | else if (ret <= 0) | |
a146ae55 | 479 | ret = BIO_ctrl(next, cmd, num, ptr); |
0f113f3e MC |
480 | break; |
481 | case BIO_CTRL_PENDING: /* More to read in buffer */ | |
482 | OPENSSL_assert(ctx->buf_len >= ctx->buf_off); | |
483 | ret = ctx->buf_len - ctx->buf_off; | |
484 | if (ret <= 0) | |
a146ae55 | 485 | ret = BIO_ctrl(next, cmd, num, ptr); |
0f113f3e MC |
486 | break; |
487 | case BIO_CTRL_FLUSH: | |
488 | /* do a final write */ | |
489 | again: | |
490 | while (ctx->buf_len != ctx->buf_off) { | |
491 | i = b64_write(b, NULL, 0); | |
492 | if (i < 0) | |
493 | return i; | |
494 | } | |
495 | if (BIO_get_flags(b) & BIO_FLAGS_BASE64_NO_NL) { | |
496 | if (ctx->tmp_len != 0) { | |
497 | ctx->buf_len = EVP_EncodeBlock((unsigned char *)ctx->buf, | |
498 | (unsigned char *)ctx->tmp, | |
499 | ctx->tmp_len); | |
500 | ctx->buf_off = 0; | |
501 | ctx->tmp_len = 0; | |
502 | goto again; | |
503 | } | |
b518d2d5 RL |
504 | } else if (ctx->encode != B64_NONE |
505 | && EVP_ENCODE_CTX_num(ctx->base64) != 0) { | |
0f113f3e | 506 | ctx->buf_off = 0; |
b518d2d5 | 507 | EVP_EncodeFinal(ctx->base64, |
0f113f3e MC |
508 | (unsigned char *)ctx->buf, &(ctx->buf_len)); |
509 | /* push out the bytes */ | |
510 | goto again; | |
511 | } | |
512 | /* Finally flush the underlying BIO */ | |
a146ae55 | 513 | ret = BIO_ctrl(next, cmd, num, ptr); |
0f113f3e MC |
514 | break; |
515 | ||
516 | case BIO_C_DO_STATE_MACHINE: | |
517 | BIO_clear_retry_flags(b); | |
a146ae55 | 518 | ret = BIO_ctrl(next, cmd, num, ptr); |
0f113f3e MC |
519 | BIO_copy_next_retry(b); |
520 | break; | |
521 | ||
522 | case BIO_CTRL_DUP: | |
523 | break; | |
524 | case BIO_CTRL_INFO: | |
525 | case BIO_CTRL_GET: | |
526 | case BIO_CTRL_SET: | |
527 | default: | |
a146ae55 | 528 | ret = BIO_ctrl(next, cmd, num, ptr); |
0f113f3e MC |
529 | break; |
530 | } | |
a146ae55 | 531 | return ret; |
0f113f3e | 532 | } |
d02b48c6 | 533 | |
fce78bd4 | 534 | static long b64_callback_ctrl(BIO *b, int cmd, BIO_info_cb *fp) |
0f113f3e MC |
535 | { |
536 | long ret = 1; | |
a146ae55 | 537 | BIO *next = BIO_next(b); |
0f113f3e | 538 | |
a146ae55 MC |
539 | if (next == NULL) |
540 | return 0; | |
0f113f3e MC |
541 | switch (cmd) { |
542 | default: | |
a146ae55 | 543 | ret = BIO_callback_ctrl(next, cmd, fp); |
0f113f3e MC |
544 | break; |
545 | } | |
26a7d938 | 546 | return ret; |
0f113f3e | 547 | } |
d3442bc7 | 548 | |
cb877ccb | 549 | static int b64_puts(BIO *b, const char *str) |
0f113f3e MC |
550 | { |
551 | return b64_write(b, str, strlen(str)); | |
552 | } |