2 * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
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
10 /* Part of the code in here was originally in conf.c, which is now removed */
14 #include "internal/cryptlib.h"
15 #include <openssl/stack.h>
16 #include <openssl/lhash.h>
17 #include <openssl/conf.h>
18 #include <openssl/conf_api.h>
20 #include <openssl/buffer.h>
21 #include <openssl/err.h>
23 static char *eat_ws(CONF *conf, char *p);
24 static char *eat_alpha_numeric(CONF *conf, char *p);
25 static void clear_comments(CONF *conf, char *p);
26 static int str_copy(CONF *conf, char *section, char **to, char *from);
27 static char *scan_quote(CONF *conf, char *p);
28 static char *scan_dquote(CONF *conf, char *p);
29 #define scan_esc(conf,p) (((IS_EOF((conf),(p)[1]))?((p)+1):((p)+2)))
31 static CONF *def_create(CONF_METHOD *meth);
32 static int def_init_default(CONF *conf);
33 static int def_init_WIN32(CONF *conf);
34 static int def_destroy(CONF *conf);
35 static int def_destroy_data(CONF *conf);
36 static int def_load(CONF *conf, const char *name, long *eline);
37 static int def_load_bio(CONF *conf, BIO *bp, long *eline);
38 static int def_dump(const CONF *conf, BIO *bp);
39 static int def_is_number(const CONF *conf, char c);
40 static int def_to_int(const CONF *conf, char c);
42 static CONF_METHOD default_method = {
55 static CONF_METHOD WIN32_method = {
68 CONF_METHOD *NCONF_default()
70 return &default_method;
73 CONF_METHOD *NCONF_WIN32()
78 static CONF *def_create(CONF_METHOD *meth)
82 ret = OPENSSL_malloc(sizeof(*ret));
84 if (meth->init(ret) == 0) {
91 static int def_init_default(CONF *conf)
96 conf->meth = &default_method;
97 conf->meth_data = (void *)CONF_type_default;
103 static int def_init_WIN32(CONF *conf)
108 conf->meth = &WIN32_method;
109 conf->meth_data = (void *)CONF_type_win32;
115 static int def_destroy(CONF *conf)
117 if (def_destroy_data(conf)) {
124 static int def_destroy_data(CONF *conf)
128 _CONF_free_data(conf);
132 static int def_load(CONF *conf, const char *name, long *line)
137 #ifdef OPENSSL_SYS_VMS
138 in = BIO_new_file(name, "r");
140 in = BIO_new_file(name, "rb");
143 if (ERR_GET_REASON(ERR_peek_last_error()) == BIO_R_NO_SUCH_FILE)
144 CONFerr(CONF_F_DEF_LOAD, CONF_R_NO_SUCH_FILE);
146 CONFerr(CONF_F_DEF_LOAD, ERR_R_SYS_LIB);
150 ret = def_load_bio(conf, in, line);
156 static int def_load_bio(CONF *conf, BIO *in, long *line)
158 /* The macro BUFSIZE conflicts with a system macro in VxWorks */
159 #define CONFBUFSIZE 512
160 int bufnum = 0, i, ii;
161 BUF_MEM *buff = NULL;
165 char btmp[DECIMAL_SIZE(eline) + 1];
166 CONF_VALUE *v = NULL, *tv;
167 CONF_VALUE *sv = NULL;
168 char *section = NULL, *buf;
169 char *start, *psection, *pname;
170 void *h = (void *)(conf->data);
172 if ((buff = BUF_MEM_new()) == NULL) {
173 CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_BUF_LIB);
177 section = OPENSSL_strdup("default");
178 if (section == NULL) {
179 CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_MALLOC_FAILURE);
183 if (_CONF_new_data(conf) == 0) {
184 CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_MALLOC_FAILURE);
188 sv = _CONF_new_section(conf, section);
190 CONFerr(CONF_F_DEF_LOAD_BIO, CONF_R_UNABLE_TO_CREATE_NEW_SECTION);
197 if (!BUF_MEM_grow(buff, bufnum + CONFBUFSIZE)) {
198 CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_BUF_LIB);
201 p = &(buff->data[bufnum]);
203 BIO_gets(in, p, CONFBUFSIZE - 1);
204 p[CONFBUFSIZE - 1] = '\0';
206 if (i == 0 && !again)
210 if ((p[i - 1] != '\r') && (p[i - 1] != '\n'))
216 * we removed some trailing stuff so there is a new line on the end.
219 again = 1; /* long line */
222 eline++; /* another input line */
225 /* we now have a line with trailing \r\n removed */
227 /* i is the number of bytes */
231 /* check for line continuation */
234 * If we have bytes and the last char '\\' and second last char
237 p = &(buff->data[bufnum - 1]);
238 if (IS_ESC(conf, p[0]) && ((bufnum <= 1) || !IS_ESC(conf, p[-1]))) {
248 clear_comments(conf, buf);
249 s = eat_ws(conf, buf);
250 if (IS_EOF(conf, *s))
251 continue; /* blank line */
256 start = eat_ws(conf, s);
259 end = eat_alpha_numeric(conf, ss);
260 p = eat_ws(conf, end);
262 if (*p != '\0' && ss != p) {
266 CONFerr(CONF_F_DEF_LOAD_BIO,
267 CONF_R_MISSING_CLOSE_SQUARE_BRACKET);
271 if (!str_copy(conf, NULL, §ion, start))
273 if ((sv = _CONF_get_section(conf, section)) == NULL)
274 sv = _CONF_new_section(conf, section);
276 CONFerr(CONF_F_DEF_LOAD_BIO,
277 CONF_R_UNABLE_TO_CREATE_NEW_SECTION);
284 end = eat_alpha_numeric(conf, s);
285 if ((end[0] == ':') && (end[1] == ':')) {
290 end = eat_alpha_numeric(conf, end);
292 p = eat_ws(conf, end);
294 CONFerr(CONF_F_DEF_LOAD_BIO, CONF_R_MISSING_EQUAL_SIGN);
299 start = eat_ws(conf, p);
300 while (!IS_EOF(conf, *p))
303 while ((p != start) && (IS_WS(conf, *p)))
308 if ((v = OPENSSL_malloc(sizeof(*v))) == NULL) {
309 CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_MALLOC_FAILURE);
312 if (psection == NULL)
314 v->name = OPENSSL_malloc(strlen(pname) + 1);
316 if (v->name == NULL) {
317 CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_MALLOC_FAILURE);
320 OPENSSL_strlcpy(v->name, pname, strlen(pname) + 1);
321 if (!str_copy(conf, psection, &(v->value), start))
324 if (strcmp(psection, section) != 0) {
325 if ((tv = _CONF_get_section(conf, psection))
327 tv = _CONF_new_section(conf, psection);
329 CONFerr(CONF_F_DEF_LOAD_BIO,
330 CONF_R_UNABLE_TO_CREATE_NEW_SECTION);
335 if (_CONF_add_string(conf, tv, v) == 0) {
336 CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_MALLOC_FAILURE);
343 OPENSSL_free(section);
347 OPENSSL_free(section);
350 BIO_snprintf(btmp, sizeof btmp, "%ld", eline);
351 ERR_add_error_data(2, "line ", btmp);
352 if (h != conf->data) {
353 CONF_free(conf->data);
357 OPENSSL_free(v->name);
358 OPENSSL_free(v->value);
364 static void clear_comments(CONF *conf, char *p)
367 if (IS_FCOMMENT(conf, *p)) {
371 if (!IS_WS(conf, *p)) {
378 if (IS_COMMENT(conf, *p)) {
382 if (IS_DQUOTE(conf, *p)) {
383 p = scan_dquote(conf, p);
386 if (IS_QUOTE(conf, *p)) {
387 p = scan_quote(conf, p);
390 if (IS_ESC(conf, *p)) {
391 p = scan_esc(conf, p);
394 if (IS_EOF(conf, *p))
401 static int str_copy(CONF *conf, char *section, char **pto, char *from)
403 int q, r, rr = 0, to = 0, len = 0;
404 char *s, *e, *rp, *p, *rrp, *np, *cp, v;
407 if ((buf = BUF_MEM_new()) == NULL)
410 len = strlen(from) + 1;
411 if (!BUF_MEM_grow(buf, len))
415 if (IS_QUOTE(conf, *from)) {
418 while (!IS_EOF(conf, *from) && (*from != q)) {
419 if (IS_ESC(conf, *from)) {
421 if (IS_EOF(conf, *from))
424 buf->data[to++] = *(from++);
428 } else if (IS_DQUOTE(conf, *from)) {
431 while (!IS_EOF(conf, *from)) {
433 if (*(from + 1) == q) {
439 buf->data[to++] = *(from++);
443 } else if (IS_ESC(conf, *from)) {
457 } else if (IS_EOF(conf, *from))
459 else if (*from == '$') {
460 /* try to expand it */
474 while (IS_ALPHA_NUMERIC(conf, *e))
476 if ((e[0] == ':') && (e[1] == ':')) {
483 while (IS_ALPHA_NUMERIC(conf, *e))
491 CONFerr(CONF_F_STR_COPY, CONF_R_NO_CLOSE_BRACE);
497 * So at this point we have
498 * np which is the start of the name string which is
500 * cp which is the start of the section string which is
502 * e is the 'next point after'.
503 * r and rr are the chars replaced by the '\0'
504 * rp and rrp is where 'r' and 'rr' came from.
506 p = _CONF_get_string(conf, cp, np);
511 CONFerr(CONF_F_STR_COPY, CONF_R_VARIABLE_HAS_NO_VALUE);
514 if (!BUF_MEM_grow_clean(buf,
515 (strlen(p) + buf->length - (e - from)))) {
516 CONFerr(CONF_F_STR_COPY, ERR_R_MALLOC_FAILURE);
520 buf->data[to++] = *(p++);
523 * Since we change the pointer 'from', we also have to change the
524 * perceived length of the string it points at. /RL
530 * In case there were no braces or parenthesis around the
531 * variable reference, we have to put back the character that was
532 * replaced with a '\0'. /RL
536 buf->data[to++] = *(from++);
538 buf->data[to] = '\0';
548 static char *eat_ws(CONF *conf, char *p)
550 while (IS_WS(conf, *p) && (!IS_EOF(conf, *p)))
555 static char *eat_alpha_numeric(CONF *conf, char *p)
558 if (IS_ESC(conf, *p)) {
559 p = scan_esc(conf, p);
562 if (!IS_ALPHA_NUMERIC_PUNCT(conf, *p))
568 static char *scan_quote(CONF *conf, char *p)
573 while (!(IS_EOF(conf, *p)) && (*p != q)) {
574 if (IS_ESC(conf, *p)) {
576 if (IS_EOF(conf, *p))
586 static char *scan_dquote(CONF *conf, char *p)
591 while (!(IS_EOF(conf, *p))) {
606 static void dump_value_doall_arg(const CONF_VALUE *a, BIO *out)
609 BIO_printf(out, "[%s] %s=%s\n", a->section, a->name, a->value);
611 BIO_printf(out, "[[%s]]\n", a->section);
614 IMPLEMENT_LHASH_DOALL_ARG_CONST(CONF_VALUE, BIO);
616 static int def_dump(const CONF *conf, BIO *out)
618 lh_CONF_VALUE_doall_BIO(conf->data, dump_value_doall_arg, out);
622 static int def_is_number(const CONF *conf, char c)
624 return IS_NUMBER(conf, c);
627 static int def_to_int(const CONF *conf, char c)