| /* 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" |
| |
| |
| 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; |
| } |
| 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; |
| } |
| 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; |
| } |
| |
| 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(CONF_MUST_BE_NULL *filename, const char *appname, |
| unsigned long flags) { |
| return 1; |
| } |
| |
| void CONF_modules_free(void) {} |
| |
| void OPENSSL_config(CONF_MUST_BE_NULL *config_name) {} |
| |
| void OPENSSL_no_config(void) {} |