| /* |
| * Copyright 1995-2021 The OpenSSL Project Authors. All Rights Reserved. |
| * |
| * Licensed under the Apache License 2.0 (the "License"). You may not use |
| * this file except in compliance with the License. You can obtain a copy |
| * in the file LICENSE in the source distribution or at |
| * https://www.openssl.org/source/license.html |
| */ |
| |
| /* Part of the code in here was originally in conf.c, which is now removed */ |
| |
| #include <stdio.h> |
| #include <string.h> |
| #include "internal/e_os.h" /* strcasecmp and struct stat */ |
| #ifdef __TANDEM |
| # include <sys/types.h> /* needed for stat.h */ |
| # include <sys/stat.h> /* struct stat */ |
| #endif |
| #include "internal/cryptlib.h" |
| #include "internal/o_dir.h" |
| #include <openssl/lhash.h> |
| #include <openssl/conf.h> |
| #include <openssl/conf_api.h> |
| #include "conf_local.h" |
| #include "conf_def.h" |
| #include <openssl/buffer.h> |
| #include <openssl/err.h> |
| #ifndef OPENSSL_NO_POSIX_IO |
| # include <sys/stat.h> |
| # ifdef _WIN32 |
| # define stat _stat |
| # endif |
| #endif |
| |
| #ifndef S_ISDIR |
| # define S_ISDIR(a) (((a) & S_IFMT) == S_IFDIR) |
| #endif |
| |
| /* |
| * 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 int is_keytype(const CONF *conf, char c, unsigned short type); |
| static char *eat_ws(CONF *conf, char *p); |
| static void trim_ws(CONF *conf, char *start); |
| static char *eat_alpha_numeric(CONF *conf, char *p); |
| static void clear_comments(CONF *conf, char *p); |
| static int str_copy(CONF *conf, char *section, char **to, char *from); |
| static char *scan_quote(CONF *conf, char *p); |
| static char *scan_dquote(CONF *conf, char *p); |
| #define scan_esc(conf,p) (((IS_EOF((conf),(p)[1]))?((p)+1):((p)+2))) |
| #ifndef OPENSSL_NO_POSIX_IO |
| static BIO *process_include(char *include, OPENSSL_DIR_CTX **dirctx, |
| char **dirpath); |
| static BIO *get_next_file(const char *path, OPENSSL_DIR_CTX **dirctx); |
| #endif |
| |
| static CONF *def_create(CONF_METHOD *meth); |
| static int def_init_default(CONF *conf); |
| #ifndef OPENSSL_NO_DEPRECATED_3_0 |
| static int def_init_WIN32(CONF *conf); |
| #endif |
| static int def_destroy(CONF *conf); |
| static int def_destroy_data(CONF *conf); |
| static int def_load(CONF *conf, const char *name, long *eline); |
| static int def_load_bio(CONF *conf, BIO *bp, long *eline); |
| static int def_dump(const CONF *conf, BIO *bp); |
| static int def_is_number(const CONF *conf, char c); |
| static int def_to_int(const CONF *conf, char c); |
| |
| static CONF_METHOD default_method = { |
| "OpenSSL default", |
| def_create, |
| def_init_default, |
| def_destroy, |
| def_destroy_data, |
| def_load_bio, |
| def_dump, |
| def_is_number, |
| def_to_int, |
| def_load |
| }; |
| |
| CONF_METHOD *NCONF_default(void) |
| { |
| return &default_method; |
| } |
| |
| #ifndef OPENSSL_NO_DEPRECATED_3_0 |
| static CONF_METHOD WIN32_method = { |
| "WIN32", |
| def_create, |
| def_init_WIN32, |
| def_destroy, |
| def_destroy_data, |
| def_load_bio, |
| def_dump, |
| def_is_number, |
| def_to_int, |
| def_load |
| }; |
| |
| CONF_METHOD *NCONF_WIN32(void) |
| { |
| return &WIN32_method; |
| } |
| #endif |
| |
| static CONF *def_create(CONF_METHOD *meth) |
| { |
| CONF *ret; |
| |
| ret = OPENSSL_malloc(sizeof(*ret)); |
| if (ret != NULL) |
| if (meth->init(ret) == 0) { |
| OPENSSL_free(ret); |
| ret = NULL; |
| } |
| return ret; |
| } |
| |
| static int def_init_default(CONF *conf) |
| { |
| if (conf == NULL) |
| return 0; |
| |
| memset(conf, 0, sizeof(*conf)); |
| conf->meth = &default_method; |
| conf->meth_data = (void *)CONF_type_default; |
| |
| return 1; |
| } |
| |
| #ifndef OPENSSL_NO_DEPRECATED_3_0 |
| static int def_init_WIN32(CONF *conf) |
| { |
| if (conf == NULL) |
| return 0; |
| |
| memset(conf, 0, sizeof(*conf)); |
| conf->meth = &WIN32_method; |
| conf->meth_data = (void *)CONF_type_win32; |
| |
| return 1; |
| } |
| #endif |
| |
| static int def_destroy(CONF *conf) |
| { |
| if (def_destroy_data(conf)) { |
| OPENSSL_free(conf); |
| return 1; |
| } |
| return 0; |
| } |
| |
| static int def_destroy_data(CONF *conf) |
| { |
| if (conf == NULL) |
| return 0; |
| _CONF_free_data(conf); |
| return 1; |
| } |
| |
| static int def_load(CONF *conf, const char *name, long *line) |
| { |
| int ret; |
| BIO *in = NULL; |
| |
| #ifdef OPENSSL_SYS_VMS |
| in = BIO_new_file(name, "r"); |
| #else |
| in = BIO_new_file(name, "rb"); |
| #endif |
| if (in == NULL) { |
| if (ERR_GET_REASON(ERR_peek_last_error()) == BIO_R_NO_SUCH_FILE) |
| ERR_raise(ERR_LIB_CONF, CONF_R_NO_SUCH_FILE); |
| else |
| ERR_raise(ERR_LIB_CONF, ERR_R_SYS_LIB); |
| return 0; |
| } |
| |
| ret = def_load_bio(conf, in, line); |
| BIO_free(in); |
| |
| return ret; |
| } |
| |
| |
| /* Parse a boolean value and fill in *flag. Return 0 on error. */ |
| static int parsebool(const char *pval, int *flag) |
| { |
| if (strcasecmp(pval, "on") == 0 |
| || strcasecmp(pval, "true") == 0) { |
| *flag = 1; |
| } else if (strcasecmp(pval, "off") == 0 |
| || strcasecmp(pval, "false") == 0) { |
| *flag = 0; |
| } else { |
| ERR_raise(ERR_LIB_CONF, CONF_R_INVALID_PRAGMA); |
| return 0; |
| } |
| return 1; |
| } |
| |
| static int def_load_bio(CONF *conf, BIO *in, long *line) |
| { |
| /* The macro BUFSIZE conflicts with a system macro in VxWorks */ |
| #define CONFBUFSIZE 512 |
| int bufnum = 0, i, ii; |
| BUF_MEM *buff = NULL; |
| char *s, *p, *end; |
| int again; |
| int first_call = 1; |
| 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; |
| void *h = (void *)(conf->data); |
| STACK_OF(BIO) *biosk = NULL; |
| #ifndef OPENSSL_NO_POSIX_IO |
| char *dirpath = NULL; |
| OPENSSL_DIR_CTX *dirctx = NULL; |
| #endif |
| |
| if ((buff = BUF_MEM_new()) == NULL) { |
| ERR_raise(ERR_LIB_CONF, ERR_R_BUF_LIB); |
| goto err; |
| } |
| |
| section = OPENSSL_strdup("default"); |
| if (section == NULL) { |
| ERR_raise(ERR_LIB_CONF, ERR_R_MALLOC_FAILURE); |
| goto err; |
| } |
| |
| if (_CONF_new_data(conf) == 0) { |
| ERR_raise(ERR_LIB_CONF, ERR_R_MALLOC_FAILURE); |
| goto err; |
| } |
| |
| sv = _CONF_new_section(conf, section); |
| if (sv == NULL) { |
| ERR_raise(ERR_LIB_CONF, CONF_R_UNABLE_TO_CREATE_NEW_SECTION); |
| goto err; |
| } |
| |
| bufnum = 0; |
| again = 0; |
| for (;;) { |
| if (!BUF_MEM_grow(buff, bufnum + CONFBUFSIZE)) { |
| ERR_raise(ERR_LIB_CONF, ERR_R_BUF_LIB); |
| goto err; |
| } |
| p = &(buff->data[bufnum]); |
| *p = '\0'; |
| read_retry: |
| if (in != NULL && BIO_gets(in, p, CONFBUFSIZE - 1) < 0) |
| goto err; |
| p[CONFBUFSIZE - 1] = '\0'; |
| ii = i = strlen(p); |
| if (first_call) { |
| /* Other BOMs imply unsupported multibyte encoding, |
| * so don't strip them and let the error raise */ |
| const unsigned char utf8_bom[3] = {0xEF, 0xBB, 0xBF}; |
| |
| if (i >= 3 && memcmp(p, utf8_bom, 3) == 0) { |
| memmove(p, p + 3, i - 3); |
| p[i - 3] = 0; |
| i -= 3; |
| ii -= 3; |
| } |
| first_call = 0; |
| } |
| if (i == 0 && !again) { |
| /* the currently processed BIO is NULL or at EOF */ |
| BIO *parent; |
| |
| #ifndef OPENSSL_NO_POSIX_IO |
| /* continue processing with the next file from directory */ |
| if (dirctx != NULL) { |
| BIO *next; |
| |
| if ((next = get_next_file(dirpath, &dirctx)) != NULL) { |
| BIO_vfree(in); |
| in = next; |
| goto read_retry; |
| } else { |
| OPENSSL_free(dirpath); |
| dirpath = NULL; |
| } |
| } |
| #endif |
| /* no more files in directory, continue with processing parent */ |
| if ((parent = sk_BIO_pop(biosk)) == NULL) { |
| /* everything processed get out of the loop */ |
| break; |
| } else { |
| BIO_vfree(in); |
| in = parent; |
| goto read_retry; |
| } |
| } |
| 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; |
| } |
| ERR_raise(ERR_LIB_CONF, CONF_R_MISSING_CLOSE_SQUARE_BRACKET); |
| goto err; |
| } |
| *end = '\0'; |
| if (!str_copy(conf, NULL, §ion, start)) |
| goto err; |
| if ((sv = _CONF_get_section(conf, section)) == NULL) |
| sv = _CONF_new_section(conf, section); |
| if (sv == NULL) { |
| ERR_raise(ERR_LIB_CONF, CONF_R_UNABLE_TO_CREATE_NEW_SECTION); |
| goto err; |
| } |
| continue; |
| } else { |
| pname = s; |
| 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); |
| } else { |
| psection = section; |
| } |
| p = eat_ws(conf, end); |
| if (CHECK_AND_SKIP_PREFIX(pname, ".pragma") |
| && (p != pname || *p == '=')) { |
| char *pval; |
| |
| if (*p == '=') { |
| p++; |
| p = eat_ws(conf, p); |
| } |
| trim_ws(conf, p); |
| |
| /* Pragma values take the form keyword:value */ |
| pval = strchr(p, ':'); |
| if (pval == NULL || pval == p || pval[1] == '\0') { |
| ERR_raise(ERR_LIB_CONF, CONF_R_INVALID_PRAGMA); |
| goto err; |
| } |
| |
| *pval++ = '\0'; |
| trim_ws(conf, p); |
| pval = eat_ws(conf, pval); |
| |
| /* |
| * Known pragmas: |
| * |
| * dollarid takes "on", "true or "off", "false" |
| * abspath takes "on", "true or "off", "false" |
| * includedir directory prefix |
| */ |
| if (strcmp(p, "dollarid") == 0) { |
| if (!parsebool(pval, &conf->flag_dollarid)) |
| goto err; |
| } else if (strcmp(p, "abspath") == 0) { |
| if (!parsebool(pval, &conf->flag_abspath)) |
| goto err; |
| } else if (strcmp(p, "includedir") == 0) { |
| OPENSSL_free(conf->includedir); |
| if ((conf->includedir = OPENSSL_strdup(pval)) == NULL) { |
| ERR_raise(ERR_LIB_CONF, ERR_R_MALLOC_FAILURE); |
| goto err; |
| } |
| } |
| |
| /* |
| * We *ignore* any unknown pragma. |
| */ |
| continue; |
| } else if (CHECK_AND_SKIP_PREFIX(pname, ".include") |
| && (p != pname || *p == '=')) { |
| char *include = NULL; |
| BIO *next; |
| const char *include_dir = ossl_safe_getenv("OPENSSL_CONF_INCLUDE"); |
| char *include_path = NULL; |
| |
| if (include_dir == NULL) |
| include_dir = conf->includedir; |
| |
| if (*p == '=') { |
| p++; |
| p = eat_ws(conf, p); |
| } |
| trim_ws(conf, p); |
| if (!str_copy(conf, psection, &include, p)) |
| goto err; |
| |
| if (include_dir != NULL && !ossl_is_absolute_path(include)) { |
| size_t newlen = strlen(include_dir) + strlen(include) + 2; |
| |
| include_path = OPENSSL_malloc(newlen); |
| if (include_path == NULL) { |
| ERR_raise(ERR_LIB_CONF, ERR_R_MALLOC_FAILURE); |
| OPENSSL_free(include); |
| goto err; |
| } |
| |
| OPENSSL_strlcpy(include_path, include_dir, newlen); |
| if (!ossl_ends_with_dirsep(include_path)) |
| OPENSSL_strlcat(include_path, "/", newlen); |
| OPENSSL_strlcat(include_path, include, newlen); |
| OPENSSL_free(include); |
| } else { |
| include_path = include; |
| } |
| |
| if (conf->flag_abspath |
| && !ossl_is_absolute_path(include_path)) { |
| ERR_raise(ERR_LIB_CONF, CONF_R_RELATIVE_PATH); |
| OPENSSL_free(include_path); |
| goto err; |
| } |
| |
| /* get the BIO of the included file */ |
| #ifndef OPENSSL_NO_POSIX_IO |
| next = process_include(include_path, &dirctx, &dirpath); |
| if (include_path != dirpath) { |
| /* dirpath will contain include in case of a directory */ |
| OPENSSL_free(include_path); |
| } |
| #else |
| next = BIO_new_file(include_path, "r"); |
| OPENSSL_free(include_path); |
| #endif |
| |
| if (next != NULL) { |
| /* push the currently processing BIO onto stack */ |
| if (biosk == NULL) { |
| if ((biosk = sk_BIO_new_null()) == NULL) { |
| ERR_raise(ERR_LIB_CONF, ERR_R_MALLOC_FAILURE); |
| BIO_free(next); |
| goto err; |
| } |
| } |
| if (!sk_BIO_push(biosk, in)) { |
| ERR_raise(ERR_LIB_CONF, ERR_R_MALLOC_FAILURE); |
| BIO_free(next); |
| goto err; |
| } |
| /* continue with reading from the included BIO */ |
| in = next; |
| } |
| continue; |
| } else if (*p != '=') { |
| ERR_raise_data(ERR_LIB_CONF, CONF_R_MISSING_EQUAL_SIGN, |
| "HERE-->%s", p); |
| goto err; |
| } |
| *end = '\0'; |
| p++; |
| start = eat_ws(conf, p); |
| trim_ws(conf, start); |
| |
| if ((v = OPENSSL_malloc(sizeof(*v))) == NULL) { |
| ERR_raise(ERR_LIB_CONF, ERR_R_MALLOC_FAILURE); |
| goto err; |
| } |
| v->name = OPENSSL_strdup(pname); |
| v->value = NULL; |
| if (v->name == NULL) { |
| ERR_raise(ERR_LIB_CONF, ERR_R_MALLOC_FAILURE); |
| goto err; |
| } |
| if (!str_copy(conf, psection, &(v->value), start)) |
| goto err; |
| |
| if (strcmp(psection, section) != 0) { |
| if ((tv = _CONF_get_section(conf, psection)) |
| == NULL) |
| tv = _CONF_new_section(conf, psection); |
| if (tv == NULL) { |
| ERR_raise(ERR_LIB_CONF, |
| CONF_R_UNABLE_TO_CREATE_NEW_SECTION); |
| goto err; |
| } |
| } else |
| tv = sv; |
| if (_CONF_add_string(conf, tv, v) == 0) { |
| ERR_raise(ERR_LIB_CONF, ERR_R_MALLOC_FAILURE); |
| goto err; |
| } |
| v = NULL; |
| } |
| } |
| BUF_MEM_free(buff); |
| OPENSSL_free(section); |
| /* |
| * No need to pop, since we only get here if the stack is empty. |
| * If this causes a BIO leak, THE ISSUE IS SOMEWHERE ELSE! |
| */ |
| sk_BIO_free(biosk); |
| return 1; |
| |
| err: |
| BUF_MEM_free(buff); |
| OPENSSL_free(section); |
| /* |
| * Since |in| is the first element of the stack and should NOT be freed |
| * here, we cannot use sk_BIO_pop_free(). Instead, we pop and free one |
| * BIO at a time, making sure that the last one popped isn't. |
| */ |
| while (sk_BIO_num(biosk) > 0) { |
| BIO *popped = sk_BIO_pop(biosk); |
| BIO_vfree(in); |
| in = popped; |
| } |
| sk_BIO_free(biosk); |
| #ifndef OPENSSL_NO_POSIX_IO |
| OPENSSL_free(dirpath); |
| if (dirctx != NULL) |
| OPENSSL_DIR_end(&dirctx); |
| #endif |
| if (line != NULL) |
| *line = eline; |
| BIO_snprintf(btmp, sizeof(btmp), "%ld", eline); |
| ERR_add_error_data(2, "line ", btmp); |
| if (h != conf->data) { |
| CONF_free(conf->data); |
| conf->data = NULL; |
| } |
| if (v != NULL) { |
| OPENSSL_free(v->name); |
| OPENSSL_free(v->value); |
| OPENSSL_free(v); |
| } |
| return 0; |
| } |
| |
| 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 str_copy(CONF *conf, char *section, char **pto, char *from) |
| { |
| int q, r, rr = 0, to = 0, len = 0; |
| char *s, *e, *rp, *p, *rrp, *np, *cp, v; |
| BUF_MEM *buf; |
| |
| if ((buf = BUF_MEM_new()) == 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 == '$' |
| && (!conf->flag_dollarid |
| || from[1] == '{' |
| || from[1] == '(')) { |
| size_t newsize; |
| |
| /* 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_ALNUM(conf, *e) |
| || (conf->flag_dollarid && IS_DOLLAR(conf, *e))) |
| e++; |
| if ((e[0] == ':') && (e[1] == ':')) { |
| cp = np; |
| rrp = e; |
| rr = *e; |
| *rrp = '\0'; |
| e += 2; |
| np = e; |
| while (IS_ALNUM(conf, *e) |
| || (conf->flag_dollarid && IS_DOLLAR(conf, *e))) |
| e++; |
| } |
| r = *e; |
| *e = '\0'; |
| rp = e; |
| if (q) { |
| if (r != q) { |
| ERR_raise(ERR_LIB_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 = _CONF_get_string(conf, cp, np); |
| if (rrp != NULL) |
| *rrp = rr; |
| *rp = r; |
| if (p == NULL) { |
| ERR_raise(ERR_LIB_CONF, CONF_R_VARIABLE_HAS_NO_VALUE); |
| goto err; |
| } |
| newsize = strlen(p) + buf->length - (e - from); |
| if (newsize > MAX_CONF_VALUE_LENGTH) { |
| ERR_raise(ERR_LIB_CONF, CONF_R_VARIABLE_EXPANSION_TOO_LONG); |
| goto err; |
| } |
| if (!BUF_MEM_grow_clean(buf, newsize)) { |
| ERR_raise(ERR_LIB_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'; |
| OPENSSL_free(*pto); |
| *pto = buf->data; |
| OPENSSL_free(buf); |
| return 1; |
| err: |
| BUF_MEM_free(buf); |
| return 0; |
| } |
| |
| #ifndef OPENSSL_NO_POSIX_IO |
| /* |
| * Check whether included path is a directory. |
| * Returns next BIO to process and in case of a directory |
| * also an opened directory context and the include path. |
| */ |
| static BIO *process_include(char *include, OPENSSL_DIR_CTX **dirctx, |
| char **dirpath) |
| { |
| struct stat st; |
| BIO *next; |
| |
| if (stat(include, &st) < 0) { |
| ERR_raise_data(ERR_LIB_SYS, errno, "calling stat(%s)", include); |
| /* missing include file is not fatal error */ |
| return NULL; |
| } |
| |
| if (S_ISDIR(st.st_mode)) { |
| if (*dirctx != NULL) { |
| ERR_raise_data(ERR_LIB_CONF, CONF_R_RECURSIVE_DIRECTORY_INCLUDE, |
| "%s", include); |
| return NULL; |
| } |
| /* a directory, load its contents */ |
| if ((next = get_next_file(include, dirctx)) != NULL) |
| *dirpath = include; |
| return next; |
| } |
| |
| next = BIO_new_file(include, "r"); |
| return next; |
| } |
| |
| /* |
| * Get next file from the directory path. |
| * Returns BIO of the next file to read and updates dirctx. |
| */ |
| static BIO *get_next_file(const char *path, OPENSSL_DIR_CTX **dirctx) |
| { |
| const char *filename; |
| size_t pathlen; |
| |
| pathlen = strlen(path); |
| while ((filename = OPENSSL_DIR_read(dirctx, path)) != NULL) { |
| size_t namelen; |
| |
| namelen = strlen(filename); |
| |
| |
| if ((namelen > 5 && strcasecmp(filename + namelen - 5, ".conf") == 0) |
| || (namelen > 4 && strcasecmp(filename + namelen - 4, ".cnf") == 0)) { |
| size_t newlen; |
| char *newpath; |
| BIO *bio; |
| |
| newlen = pathlen + namelen + 2; |
| newpath = OPENSSL_zalloc(newlen); |
| if (newpath == NULL) { |
| ERR_raise(ERR_LIB_CONF, ERR_R_MALLOC_FAILURE); |
| break; |
| } |
| #ifdef OPENSSL_SYS_VMS |
| /* |
| * If the given path isn't clear VMS syntax, |
| * we treat it as on Unix. |
| */ |
| if (path[pathlen - 1] == ']' |
| || path[pathlen - 1] == '>' |
| || path[pathlen - 1] == ':') { |
| /* Clear VMS directory syntax, just copy as is */ |
| OPENSSL_strlcpy(newpath, path, newlen); |
| } |
| #endif |
| if (newpath[0] == '\0') { |
| OPENSSL_strlcpy(newpath, path, newlen); |
| OPENSSL_strlcat(newpath, "/", newlen); |
| } |
| OPENSSL_strlcat(newpath, filename, newlen); |
| |
| bio = BIO_new_file(newpath, "r"); |
| OPENSSL_free(newpath); |
| /* Errors when opening files are non-fatal. */ |
| if (bio != NULL) |
| return bio; |
| } |
| } |
| OPENSSL_DIR_end(dirctx); |
| *dirctx = NULL; |
| return NULL; |
| } |
| #endif |
| |
| static int is_keytype(const CONF *conf, char c, unsigned short type) |
| { |
| const unsigned short * keytypes = (const unsigned short *) conf->meth_data; |
| unsigned char key = (unsigned char)c; |
| |
| #ifdef CHARSET_EBCDIC |
| # if CHAR_BIT > 8 |
| if (key > 255) { |
| /* key is out of range for os_toascii table */ |
| return 0; |
| } |
| # endif |
| /* convert key from ebcdic to ascii */ |
| key = os_toascii[key]; |
| #endif |
| |
| if (key > 127) { |
| /* key is not a seven bit ascii character */ |
| return 0; |
| } |
| |
| return (keytypes[key] & type) ? 1 : 0; |
| } |
| |
| static char *eat_ws(CONF *conf, char *p) |
| { |
| while (IS_WS(conf, *p) && (!IS_EOF(conf, *p))) |
| p++; |
| return p; |
| } |
| |
| static void trim_ws(CONF *conf, char *start) |
| { |
| char *p = start; |
| |
| while (!IS_EOF(conf, *p)) |
| p++; |
| p--; |
| while ((p >= start) && IS_WS(conf, *p)) |
| p--; |
| p++; |
| *p = '\0'; |
| } |
| |
| static char *eat_alpha_numeric(CONF *conf, char *p) |
| { |
| for (;;) { |
| if (IS_ESC(conf, *p)) { |
| p = scan_esc(conf, p); |
| continue; |
| } |
| if (!(IS_ALNUM_PUNCT(conf, *p) |
| || (conf->flag_dollarid && IS_DOLLAR(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 dump_value_doall_arg(const CONF_VALUE *a, BIO *out) |
| { |
| if (a->name) |
| BIO_printf(out, "[%s] %s=%s\n", a->section, a->name, a->value); |
| else |
| BIO_printf(out, "[[%s]]\n", a->section); |
| } |
| |
| IMPLEMENT_LHASH_DOALL_ARG_CONST(CONF_VALUE, BIO); |
| |
| static int def_dump(const CONF *conf, BIO *out) |
| { |
| lh_CONF_VALUE_doall_BIO(conf->data, dump_value_doall_arg, out); |
| return 1; |
| } |
| |
| static int def_is_number(const CONF *conf, char c) |
| { |
| return IS_NUMBER(conf, c); |
| } |
| |
| static int def_to_int(const CONF *conf, char c) |
| { |
| return c - '0'; |
| } |
