--- /dev/null
+/* 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"
+#include "internal.h"
+#include "../internal.h"
+
+
+// The maximum length we can grow a value to after variable expansion. 64k
+// should be more than enough for all reasonable uses.
+#define MAX_CONF_VALUE_LENGTH 65536
+
+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;
+}
+
+CONF_VALUE *CONF_VALUE_new(void) {
+ CONF_VALUE *v = OPENSSL_malloc(sizeof(CONF_VALUE));
+ if (!v) {
+ OPENSSL_PUT_ERROR(CONF, ERR_R_MALLOC_FAILURE);
+ return NULL;
+ }
+ OPENSSL_memset(v, 0, sizeof(CONF_VALUE));
+ return v;
+}
+
+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);
+ lh_CONF_VALUE_free(conf->data);
+ OPENSSL_free(conf);
+}
+
+static CONF_VALUE *NCONF_new_section(const CONF *conf, const char *section) {
+ STACK_OF(CONF_VALUE) *sk = NULL;
+ int ok = 0;
+ CONF_VALUE *v = NULL, *old_value;
+
+ sk = sk_CONF_VALUE_new_null();
+ v = CONF_VALUE_new();
+ if (sk == NULL || v == NULL) {
+ goto err;
+ }
+ v->section = OPENSSL_strdup(section);
+ if (v->section == NULL) {
+ goto err;
+ }
+
+ 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;
+ }
+ size_t newsize = strlen(p) + buf->length - (e - from);
+ if (newsize > MAX_CONF_VALUE_LENGTH) {
+ OPENSSL_PUT_ERROR(CONF, CONF_R_VARIABLE_EXPANSION_TOO_LONG);
+ goto err;
+ }
+ if (!BUF_MEM_grow_clean(buf, newsize)) {
+ OPENSSL_PUT_ERROR(CONF, ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+ 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;
+
+ OPENSSL_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;
+
+ OPENSSL_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;
+}
+
+static 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 = OPENSSL_strdup(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 = OPENSSL_strdup("default");
+ if (section == NULL) {
+ OPENSSL_PUT_ERROR(CONF, ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+
+ 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_new())) {
+ goto err;
+ }
+ if (psection == NULL) {
+ psection = section;
+ }
+ v->name = OPENSSL_strdup(pname);
+ if (v->name == NULL) {
+ OPENSSL_PUT_ERROR(CONF, ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+ 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;
+ }
+}
+
+int CONF_modules_load_file(const char *filename, const char *appname,
+ unsigned long flags) {
+ return 1;
+}
+
+void CONF_modules_free(void) {}
+
+void OPENSSL_config(const char *config_name) {}
+
+void OPENSSL_no_config(void) {}
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