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- /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
- * All rights reserved.
- *
- * This package is an SSL implementation written
- * by Eric Young (eay@cryptsoft.com).
- * The implementation was written so as to conform with Netscapes SSL.
- *
- * This library is free for commercial and non-commercial use as long as
- * the following conditions are aheared to. The following conditions
- * apply to all code found in this distribution, be it the RC4, RSA,
- * lhash, DES, etc., code; not just the SSL code. The SSL documentation
- * included with this distribution is covered by the same copyright terms
- * except that the holder is Tim Hudson (tjh@cryptsoft.com).
- *
- * Copyright remains Eric Young's, and as such any Copyright notices in
- * the code are not to be removed.
- * If this package is used in a product, Eric Young should be given attribution
- * as the author of the parts of the library used.
- * This can be in the form of a textual message at program startup or
- * in documentation (online or textual) provided with the package.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * "This product includes cryptographic software written by
- * Eric Young (eay@cryptsoft.com)"
- * The word 'cryptographic' can be left out if the rouines from the library
- * being used are not cryptographic related :-).
- * 4. If you include any Windows specific code (or a derivative thereof) from
- * the apps directory (application code) you must include an acknowledgement:
- * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
- *
- * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * The licence and distribution terms for any publically available version or
- * derivative of this code cannot be changed. i.e. this code cannot simply be
- * copied and put under another distribution licence
- * [including the GNU Public Licence.] */
-
- #include <openssl/conf.h>
-
- #include <string.h>
- #include <ctype.h>
-
- #include <openssl/bio.h>
- #include <openssl/buf.h>
- #include <openssl/err.h>
- #include <openssl/mem.h>
-
- #include "conf_def.h"
-
-
- static uint32_t conf_value_hash(const CONF_VALUE *v) {
- return (lh_strhash(v->section) << 2) ^ lh_strhash(v->name);
- }
-
- static int conf_value_cmp(const CONF_VALUE *a, const CONF_VALUE *b) {
- int i;
-
- if (a->section != b->section) {
- i = strcmp(a->section, b->section);
- if (i) {
- return i;
- }
- }
-
- if (a->name != NULL && b->name != NULL) {
- return strcmp(a->name, b->name);
- } else if (a->name == b->name) {
- return 0;
- } else {
- return (a->name == NULL) ? -1 : 1;
- }
- }
-
- CONF *NCONF_new(void *method) {
- CONF *conf;
-
- if (method != NULL) {
- return NULL;
- }
-
- conf = OPENSSL_malloc(sizeof(CONF));
- if (conf == NULL) {
- return NULL;
- }
-
- conf->data = lh_CONF_VALUE_new(conf_value_hash, conf_value_cmp);
- if (conf->data == NULL) {
- OPENSSL_free(conf);
- return NULL;
- }
-
- return conf;
- }
-
- static void value_free_contents(CONF_VALUE *value) {
- if (value->section) {
- OPENSSL_free(value->section);
- }
- if (value->name) {
- OPENSSL_free(value->name);
- if (value->value) {
- OPENSSL_free(value->value);
- }
- } else {
- if (value->value) {
- sk_CONF_VALUE_free((STACK_OF(CONF_VALUE)*)value->value);
- }
- }
- }
-
- static void value_free(CONF_VALUE *value) {
- value_free_contents(value);
- OPENSSL_free(value);
- }
-
- void NCONF_free(CONF *conf) {
- if (conf == NULL || conf->data == NULL) {
- return;
- }
-
- lh_CONF_VALUE_doall(conf->data, value_free_contents);
- lh_CONF_VALUE_free(conf->data);
- OPENSSL_free(conf);
- }
-
- CONF_VALUE *NCONF_new_section(const CONF *conf, const char *section) {
- STACK_OF(CONF_VALUE) *sk = NULL;
- int ok = 0, i;
- CONF_VALUE *v = NULL, *old_value;
-
- sk = sk_CONF_VALUE_new_null();
- v = OPENSSL_malloc(sizeof(CONF_VALUE));
- if (sk == NULL || v == NULL) {
- goto err;
- }
- i = strlen(section) + 1;
- v->section = OPENSSL_malloc(i);
- if (v->section == NULL) {
- goto err;
- }
-
- memcpy(v->section, section, i);
- v->section[i-1] = 0;
- v->name = NULL;
- v->value = (char *)sk;
-
- if (!lh_CONF_VALUE_insert(conf->data, &old_value, v)) {
- goto err;
- }
- if (old_value) {
- value_free(old_value);
- }
- ok = 1;
-
- err:
- if (!ok) {
- if (sk != NULL) {
- sk_CONF_VALUE_free(sk);
- }
- if (v != NULL) {
- OPENSSL_free(v);
- }
- v = NULL;
- }
- return v;
- }
-
- static int str_copy(CONF *conf, char *section, char **pto, char *from) {
- int q, r, rr = 0, to = 0, len = 0;
- char *s, *e, *rp, *rrp, *np, *cp, v;
- const char *p;
- BUF_MEM *buf;
-
- buf = BUF_MEM_new();
- if (buf == NULL) {
- return 0;
- }
-
- len = strlen(from) + 1;
- if (!BUF_MEM_grow(buf, len)) {
- goto err;
- }
-
- for (;;) {
- if (IS_QUOTE(conf, *from)) {
- q = *from;
- from++;
- while (!IS_EOF(conf, *from) && (*from != q)) {
- if (IS_ESC(conf, *from)) {
- from++;
- if (IS_EOF(conf, *from)) {
- break;
- }
- }
- buf->data[to++] = *(from++);
- }
- if (*from == q) {
- from++;
- }
- } else if (IS_DQUOTE(conf, *from)) {
- q = *from;
- from++;
- while (!IS_EOF(conf, *from)) {
- if (*from == q) {
- if (*(from + 1) == q) {
- from++;
- } else {
- break;
- }
- }
- buf->data[to++] = *(from++);
- }
- if (*from == q) {
- from++;
- }
- } else if (IS_ESC(conf, *from)) {
- from++;
- v = *(from++);
- if (IS_EOF(conf, v)) {
- break;
- } else if (v == 'r') {
- v = '\r';
- } else if (v == 'n') {
- v = '\n';
- } else if (v == 'b') {
- v = '\b';
- } else if (v == 't') {
- v = '\t';
- }
- buf->data[to++] = v;
- } else if (IS_EOF(conf, *from)) {
- break;
- } else if (*from == '$') {
- /* try to expand it */
- rrp = NULL;
- s = &(from[1]);
- if (*s == '{') {
- q = '}';
- } else if (*s == '(') {
- q = ')';
- } else {
- q = 0;
- }
-
- if (q) {
- s++;
- }
- cp = section;
- e = np = s;
- while (IS_ALPHA_NUMERIC(conf, *e)) {
- e++;
- }
- if (e[0] == ':' && e[1] == ':') {
- cp = np;
- rrp = e;
- rr = *e;
- *rrp = '\0';
- e += 2;
- np = e;
- while (IS_ALPHA_NUMERIC(conf, *e)) {
- e++;
- }
- }
- r = *e;
- *e = '\0';
- rp = e;
- if (q) {
- if (r != q) {
- OPENSSL_PUT_ERROR(CONF, CONF_R_NO_CLOSE_BRACE);
- goto err;
- }
- e++;
- }
- /* So at this point we have
- * np which is the start of the name string which is
- * '\0' terminated.
- * cp which is the start of the section string which is
- * '\0' terminated.
- * e is the 'next point after'.
- * r and rr are the chars replaced by the '\0'
- * rp and rrp is where 'r' and 'rr' came from. */
- p = NCONF_get_string(conf, cp, np);
- if (rrp != NULL) {
- *rrp = rr;
- }
- *rp = r;
- if (p == NULL) {
- OPENSSL_PUT_ERROR(CONF, CONF_R_VARIABLE_HAS_NO_VALUE);
- goto err;
- }
- BUF_MEM_grow_clean(buf, (strlen(p) + buf->length - (e - from)));
- while (*p) {
- buf->data[to++] = *(p++);
- }
-
- /* Since we change the pointer 'from', we also have
- to change the perceived length of the string it
- points at. /RL */
- len -= e - from;
- from = e;
-
- /* In case there were no braces or parenthesis around
- the variable reference, we have to put back the
- character that was replaced with a '\0'. /RL */
- *rp = r;
- } else {
- buf->data[to++] = *(from++);
- }
- }
-
- buf->data[to] = '\0';
- if (*pto != NULL) {
- OPENSSL_free(*pto);
- }
- *pto = buf->data;
- OPENSSL_free(buf);
- return 1;
-
- err:
- if (buf != NULL) {
- BUF_MEM_free(buf);
- }
- return 0;
- }
-
- static CONF_VALUE *get_section(const CONF *conf, const char *section) {
- CONF_VALUE template;
-
- memset(&template, 0, sizeof(template));
- template.section = (char *) section;
- return lh_CONF_VALUE_retrieve(conf->data, &template);
- }
-
- STACK_OF(CONF_VALUE) *NCONF_get_section(const CONF *conf, const char *section) {
- CONF_VALUE *section_value = get_section(conf, section);
- if (section_value == NULL) {
- return NULL;
- }
- return (STACK_OF(CONF_VALUE)*) section_value->value;
- }
-
- const char *NCONF_get_string(const CONF *conf, const char *section,
- const char *name) {
- CONF_VALUE template, *value;
-
- memset(&template, 0, sizeof(template));
- template.section = (char *) section;
- template.name = (char *) name;
- value = lh_CONF_VALUE_retrieve(conf->data, &template);
- if (value == NULL) {
- return NULL;
- }
- return value->value;
- }
-
- int add_string(const CONF *conf, CONF_VALUE *section, CONF_VALUE *value) {
- STACK_OF(CONF_VALUE) *section_stack = (STACK_OF(CONF_VALUE)*) section->value;
- CONF_VALUE *old_value;
-
- value->section = section->section;
- if (!sk_CONF_VALUE_push(section_stack, value)) {
- return 0;
- }
-
- if (!lh_CONF_VALUE_insert(conf->data, &old_value, value)) {
- return 0;
- }
- if (old_value != NULL) {
- (void)sk_CONF_VALUE_delete_ptr(section_stack, old_value);
- value_free(old_value);
- }
-
- return 1;
- }
-
- static char *eat_ws(CONF *conf, char *p) {
- while (IS_WS(conf, *p) && !IS_EOF(conf, *p)) {
- p++;
- }
- return p;
- }
-
- #define scan_esc(conf, p) (((IS_EOF((conf), (p)[1])) ? ((p) + 1) : ((p) + 2)))
-
- static char *eat_alpha_numeric(CONF *conf, char *p) {
- for (;;) {
- if (IS_ESC(conf, *p)) {
- p = scan_esc(conf, p);
- continue;
- }
- if (!IS_ALPHA_NUMERIC_PUNCT(conf, *p)) {
- return p;
- }
- p++;
- }
- }
-
- static char *scan_quote(CONF *conf, char *p) {
- int q = *p;
-
- p++;
- while (!IS_EOF(conf, *p) && *p != q) {
- if (IS_ESC(conf, *p)) {
- p++;
- if (IS_EOF(conf, *p)) {
- return p;
- }
- }
- p++;
- }
- if (*p == q) {
- p++;
- }
- return p;
- }
-
-
- static char *scan_dquote(CONF *conf, char *p) {
- int q = *p;
-
- p++;
- while (!(IS_EOF(conf, *p))) {
- if (*p == q) {
- if (*(p + 1) == q) {
- p++;
- } else {
- break;
- }
- }
- p++;
- }
- if (*p == q) {
- p++;
- }
- return p;
- }
-
- static void clear_comments(CONF *conf, char *p) {
- for (;;) {
- if (IS_FCOMMENT(conf, *p)) {
- *p = '\0';
- return;
- }
- if (!IS_WS(conf, *p)) {
- break;
- }
- p++;
- }
-
- for (;;) {
- if (IS_COMMENT(conf, *p)) {
- *p = '\0';
- return;
- }
- if (IS_DQUOTE(conf, *p)) {
- p = scan_dquote(conf, p);
- continue;
- }
- if (IS_QUOTE(conf, *p)) {
- p = scan_quote(conf, p);
- continue;
- }
- if (IS_ESC(conf, *p)) {
- p = scan_esc(conf, p);
- continue;
- }
- if (IS_EOF(conf, *p)) {
- return;
- } else {
- p++;
- }
- }
- }
-
- static int def_load_bio(CONF *conf, BIO *in, long *out_error_line) {
- static const size_t CONFBUFSIZE = 512;
- int bufnum = 0, i, ii;
- BUF_MEM *buff = NULL;
- char *s, *p, *end;
- int again;
- long eline = 0;
- char btmp[DECIMAL_SIZE(eline) + 1];
- CONF_VALUE *v = NULL, *tv;
- CONF_VALUE *sv = NULL;
- char *section = NULL, *buf;
- char *start, *psection, *pname;
-
- if ((buff = BUF_MEM_new()) == NULL) {
- OPENSSL_PUT_ERROR(CONF, ERR_R_BUF_LIB);
- goto err;
- }
-
- section = (char *)OPENSSL_malloc(10);
- if (section == NULL) {
- OPENSSL_PUT_ERROR(CONF, ERR_R_MALLOC_FAILURE);
- goto err;
- }
- BUF_strlcpy(section, "default", 10);
-
- sv = NCONF_new_section(conf, section);
- if (sv == NULL) {
- OPENSSL_PUT_ERROR(CONF, CONF_R_UNABLE_TO_CREATE_NEW_SECTION);
- goto err;
- }
-
- bufnum = 0;
- again = 0;
- for (;;) {
- if (!BUF_MEM_grow(buff, bufnum + CONFBUFSIZE)) {
- OPENSSL_PUT_ERROR(CONF, ERR_R_BUF_LIB);
- goto err;
- }
- p = &(buff->data[bufnum]);
- *p = '\0';
- BIO_gets(in, p, CONFBUFSIZE - 1);
- p[CONFBUFSIZE - 1] = '\0';
- ii = i = strlen(p);
- if (i == 0 && !again) {
- break;
- }
- again = 0;
- while (i > 0) {
- if ((p[i - 1] != '\r') && (p[i - 1] != '\n')) {
- break;
- } else {
- i--;
- }
- }
- /* we removed some trailing stuff so there is a new
- * line on the end. */
- if (ii && i == ii) {
- again = 1; /* long line */
- } else {
- p[i] = '\0';
- eline++; /* another input line */
- }
-
- /* we now have a line with trailing \r\n removed */
-
- /* i is the number of bytes */
- bufnum += i;
-
- v = NULL;
- /* check for line continuation */
- if (bufnum >= 1) {
- /* If we have bytes and the last char '\\' and
- * second last char is not '\\' */
- p = &(buff->data[bufnum - 1]);
- if (IS_ESC(conf, p[0]) && ((bufnum <= 1) || !IS_ESC(conf, p[-1]))) {
- bufnum--;
- again = 1;
- }
- }
- if (again) {
- continue;
- }
- bufnum = 0;
- buf = buff->data;
-
- clear_comments(conf, buf);
- s = eat_ws(conf, buf);
- if (IS_EOF(conf, *s)) {
- continue; /* blank line */
- }
- if (*s == '[') {
- char *ss;
-
- s++;
- start = eat_ws(conf, s);
- ss = start;
- again:
- end = eat_alpha_numeric(conf, ss);
- p = eat_ws(conf, end);
- if (*p != ']') {
- if (*p != '\0' && ss != p) {
- ss = p;
- goto again;
- }
- OPENSSL_PUT_ERROR(CONF, CONF_R_MISSING_CLOSE_SQUARE_BRACKET);
- goto err;
- }
- *end = '\0';
- if (!str_copy(conf, NULL, §ion, start)) {
- goto err;
- }
- if ((sv = get_section(conf, section)) == NULL) {
- sv = NCONF_new_section(conf, section);
- }
- if (sv == NULL) {
- OPENSSL_PUT_ERROR(CONF, CONF_R_UNABLE_TO_CREATE_NEW_SECTION);
- goto err;
- }
- continue;
- } else {
- pname = s;
- psection = NULL;
- end = eat_alpha_numeric(conf, s);
- if ((end[0] == ':') && (end[1] == ':')) {
- *end = '\0';
- end += 2;
- psection = pname;
- pname = end;
- end = eat_alpha_numeric(conf, end);
- }
- p = eat_ws(conf, end);
- if (*p != '=') {
- OPENSSL_PUT_ERROR(CONF, CONF_R_MISSING_EQUAL_SIGN);
- goto err;
- }
- *end = '\0';
- p++;
- start = eat_ws(conf, p);
- while (!IS_EOF(conf, *p)) {
- p++;
- }
- p--;
- while ((p != start) && (IS_WS(conf, *p))) {
- p--;
- }
- p++;
- *p = '\0';
-
- if (!(v = (CONF_VALUE *)OPENSSL_malloc(sizeof(CONF_VALUE)))) {
- OPENSSL_PUT_ERROR(CONF, ERR_R_MALLOC_FAILURE);
- goto err;
- }
- if (psection == NULL) {
- psection = section;
- }
- v->name = (char *)OPENSSL_malloc(strlen(pname) + 1);
- v->value = NULL;
- if (v->name == NULL) {
- OPENSSL_PUT_ERROR(CONF, ERR_R_MALLOC_FAILURE);
- goto err;
- }
- BUF_strlcpy(v->name, pname, strlen(pname) + 1);
- if (!str_copy(conf, psection, &(v->value), start)) {
- goto err;
- }
-
- if (strcmp(psection, section) != 0) {
- if ((tv = get_section(conf, psection)) == NULL) {
- tv = NCONF_new_section(conf, psection);
- }
- if (tv == NULL) {
- OPENSSL_PUT_ERROR(CONF, CONF_R_UNABLE_TO_CREATE_NEW_SECTION);
- goto err;
- }
- } else {
- tv = sv;
- }
- if (add_string(conf, tv, v) == 0) {
- OPENSSL_PUT_ERROR(CONF, ERR_R_MALLOC_FAILURE);
- goto err;
- }
- v = NULL;
- }
- }
- if (buff != NULL) {
- BUF_MEM_free(buff);
- }
- if (section != NULL) {
- OPENSSL_free(section);
- }
- return 1;
-
- err:
- if (buff != NULL) {
- BUF_MEM_free(buff);
- }
- if (section != NULL) {
- OPENSSL_free(section);
- }
- if (out_error_line != NULL) {
- *out_error_line = eline;
- }
- BIO_snprintf(btmp, sizeof btmp, "%ld", eline);
- ERR_add_error_data(2, "line ", btmp);
-
- if (v != NULL) {
- if (v->name != NULL) {
- OPENSSL_free(v->name);
- }
- if (v->value != NULL) {
- OPENSSL_free(v->value);
- }
- if (v != NULL) {
- OPENSSL_free(v);
- }
- }
- return 0;
- }
-
- int NCONF_load(CONF *conf, const char *filename, long *out_error_line) {
- BIO *in = BIO_new_file(filename, "rb");
- int ret;
-
- if (in == NULL) {
- OPENSSL_PUT_ERROR(CONF, ERR_R_SYS_LIB);
- return 0;
- }
-
- ret = def_load_bio(conf, in, out_error_line);
- BIO_free(in);
-
- return ret;
- }
-
- int NCONF_load_bio(CONF *conf, BIO *bio, long *out_error_line) {
- return def_load_bio(conf, bio, out_error_line);
- }
-
- int CONF_parse_list(const char *list, char sep, int remove_whitespace,
- int (*list_cb)(const char *elem, int len, void *usr),
- void *arg) {
- int ret;
- const char *lstart, *tmpend, *p;
-
- if (list == NULL) {
- OPENSSL_PUT_ERROR(CONF, CONF_R_LIST_CANNOT_BE_NULL);
- return 0;
- }
-
- lstart = list;
- for (;;) {
- if (remove_whitespace) {
- while (*lstart && isspace((unsigned char)*lstart)) {
- lstart++;
- }
- }
- p = strchr(lstart, sep);
- if (p == lstart || !*lstart) {
- ret = list_cb(NULL, 0, arg);
- } else {
- if (p) {
- tmpend = p - 1;
- } else {
- tmpend = lstart + strlen(lstart) - 1;
- }
- if (remove_whitespace) {
- while (isspace((unsigned char)*tmpend)) {
- tmpend--;
- }
- }
- ret = list_cb(lstart, tmpend - lstart + 1, arg);
- }
- if (ret <= 0) {
- return ret;
- }
- if (p == NULL) {
- return 1;
- }
- lstart = p + 1;
- }
- }
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