From patchwork Mon Jun 24 18:02:28 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Richard Haines X-Patchwork-Id: 11013907 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id D13B676 for ; Mon, 24 Jun 2019 18:04:15 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id BA8B828BC8 for ; Mon, 24 Jun 2019 18:04:15 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id A3C6E28BC1; Mon, 24 Jun 2019 18:04:15 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 792C8288B5 for ; Mon, 24 Jun 2019 18:04:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732728AbfFXSEM (ORCPT ); Mon, 24 Jun 2019 14:04:12 -0400 Received: from rgout0103.bt.lon5.cpcloud.co.uk ([65.20.0.123]:5235 "EHLO rgout01.bt.lon5.cpcloud.co.uk" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727607AbfFXSEM (ORCPT ); Mon, 24 Jun 2019 14:04:12 -0400 X-OWM-Source-IP: 86.147.202.200 (GB) X-OWM-Env-Sender: richard_c_haines@btinternet.com X-RazorGate-Vade-Classification: clean X-RazorGate-Vade-Verdict: clean 0 X-VadeSecure-score: verdict=clean score=0/300, class=clean X-SNCR-VADESECURE: CLEAN X-RazorGate-Vade-Verdict: clean 0 X-RazorGate-Vade-Classification: clean X-RazorGate-Vade: gggruggvucftvghtrhhoucdtuddrgeduvddruddvgdduvdegucetufdoteggodetrfdotffvucfrrhhofhhilhgvmecuueftkffvkffujffvgffngfevqffopdfqfgfvnecuuegrihhlohhuthemuceftddtnecunecujfgurhephffvufffkffojghfggfgsedtkeertdertddtnecuhfhrohhmpeftihgthhgrrhguucfjrghinhgvshcuoehrihgthhgrrhgupggtpghhrghinhgvshessghtihhnthgvrhhnvghtrdgtohhmqeenucfkphepkeeirddugeejrddvtddvrddvtddtnecurfgrrhgrmhephhgvlhhopehlohgtrghlhhhoshhtrdhlohgtrghlughomhgrihhnpdhinhgvthepkeeirddugeejrddvtddvrddvtddtpdhmrghilhhfrhhomhepoehrihgthhgrrhgupggtpghhrghinhgvshessghtihhnthgvrhhnvghtrdgtohhmqedprhgtphhtthhopeeorhhitghhrghruggptggphhgrihhnvghssegsthhinhhtvghrnhgvthdrtghomheqpdhrtghpthhtohepoehsughssehthigthhhordhnshgrrdhgohhvqedprhgtphhtthhopeeoshgvlhhinhhugiesvhhgvghrrdhkvghrnhgvlhdrohhrgheqnecuvehluhhsthgvrhfuihiivgeptd Received: from localhost.localdomain (86.147.202.200) by rgout01.bt.lon5.cpcloud.co.uk (9.0.019.26-1) (authenticated as richard_c_haines@btinternet.com) id 5CFA38CA01A6115E; Mon, 24 Jun 2019 19:04:08 +0100 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=btinternet.com; s=btcpcloud; t=1561399450; bh=uQg97jPWMZ1HIjLemtznRpXxNLhFSJxDCEYoW1iJgyk=; h=From:To:Cc:Subject:Date:Message-Id:X-Mailer:In-Reply-To:References:MIME-Version; b=b0t3rqAW2YeeICB+byJCyUAKtP54K+JzVC7OCnfimgy2Zbt//Ozf11Z0cOT54Y8tJe6ehn9jSx2EZ0kixf3o/0iZeMAYZT98z4A5qYafg3nlekxtOZDr8BMcB+eI/vHl21t9z3KUxoBiCN8r0hy7gE1epBt4UBxQFKAo74NyxHU= From: Richard Haines To: selinux@vger.kernel.org, sds@tycho.nsa.gov Cc: Richard Haines Subject: [PATCH V3 1/2] selinux: Remove legacy local boolean and user code Date: Mon, 24 Jun 2019 19:02:28 +0100 Message-Id: <20190624180229.9573-2-richard_c_haines@btinternet.com> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190624180229.9573-1-richard_c_haines@btinternet.com> References: <20190624180229.9573-1-richard_c_haines@btinternet.com> MIME-Version: 1.0 Sender: selinux-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: selinux@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Remove legacy local boolean and user code, and to preserve API/ABI compatibility the following functions int values should be set to '0' as they are no longer used: selinux_mkload_policy(int preservebools) security_set_boolean_list(.... int permanent) and the following are now no-op and return '-1': security_load_booleans() sepol_genusers() sepol_set_delusers() sepol_genbools() sepol_genbools_array() and these still return their paths for compatibility, however they are marked as deprecated: selinux_booleans_path() selinux_users_path() These have been removed as they are local functions only: sepol_genusers_policydb() sepol_genbools_policydb() Also "SETLOCALDEFS" removed from SELinux config file and code. Signed-off-by: Richard Haines --- libselinux/include/selinux/selinux.h | 18 +- libselinux/src/booleans.c | 225 +------------- libselinux/src/file_path_suffixes.h | 2 + libselinux/src/load_policy.c | 100 +----- libselinux/src/selinux_config.c | 9 +- libselinux/src/selinux_internal.h | 1 - libsepol/include/sepol/booleans.h | 15 +- libsepol/include/sepol/policydb/services.h | 6 - libsepol/include/sepol/users.h | 13 +- libsepol/src/deprecated_funcs.c | 50 +++ libsepol/src/genbools.c | 279 ----------------- libsepol/src/genusers.c | 343 --------------------- policycoreutils/load_policy/load_policy.c | 2 +- 13 files changed, 78 insertions(+), 985 deletions(-) create mode 100644 libsepol/src/deprecated_funcs.c delete mode 100644 libsepol/src/genbools.c delete mode 100644 libsepol/src/genusers.c diff --git a/libselinux/include/selinux/selinux.h b/libselinux/include/selinux/selinux.h index f54f236b..f2d32214 100644 --- a/libselinux/include/selinux/selinux.h +++ b/libselinux/include/selinux/selinux.h @@ -286,11 +286,7 @@ extern int security_get_initial_context_raw(const char *name, * manipulating it as needed for current boolean settings and/or local * definitions, and then calling security_load_policy to load it. * - * 'preservebools' is a boolean flag indicating whether current - * policy boolean values should be preserved into the new policy (if 1) - * or reset to the saved policy settings (if 0). The former case is the - * default for policy reloads, while the latter case is an option for policy - * reloads but is primarily for the initial policy load. + * 'preservebools' is no longer supported, set to 0. */ extern int selinux_mkload_policy(int preservebools); @@ -316,13 +312,15 @@ typedef struct { char *name; int value; } SELboolean; -/* save a list of booleans in a single transaction. */ +/* save a list of booleans in a single transaction. 'permanent' is no + * longer supported, set to 0. + */ extern int security_set_boolean_list(size_t boolcnt, SELboolean * boollist, int permanent); -/* Load policy boolean settings. - Path may be NULL, in which case the booleans are loaded from - the active policy boolean configuration file. */ +/* Load policy boolean settings. Deprecated as local policy booleans no + * longer supported. Will always return 0. + */ extern int security_load_booleans(char *path); /* Check the validity of a security context. */ @@ -569,8 +567,10 @@ extern const char *selinux_systemd_contexts_path(void); extern const char *selinux_contexts_path(void); extern const char *selinux_securetty_types_path(void); extern const char *selinux_booleans_subs_path(void); +/* Deprecated as local policy booleans no longer supported. */ extern const char *selinux_booleans_path(void); extern const char *selinux_customizable_types_path(void); +/* Deprecated as policy ./users no longer supported. */ extern const char *selinux_users_path(void); extern const char *selinux_usersconf_path(void); extern const char *selinux_translations_path(void); diff --git a/libselinux/src/booleans.c b/libselinux/src/booleans.c index ab1e0754..c1caf929 100644 --- a/libselinux/src/booleans.c +++ b/libselinux/src/booleans.c @@ -322,175 +322,6 @@ int security_commit_booleans(void) return -1; } -static char *strtrim(char *dest, char *source, int size) -{ - int i = 0; - char *ptr = source; - i = 0; - while (isspace(*ptr) && i < size) { - ptr++; - i++; - } - strncpy(dest, ptr, size); - for (i = strlen(dest) - 1; i > 0; i--) { - if (!isspace(dest[i])) - break; - } - dest[i + 1] = '\0'; - return dest; -} -static int process_boolean(char *buffer, char *name, int namesize, int *val) -{ - char name1[BUFSIZ]; - char *ptr = NULL; - char *tok; - - /* Skip spaces */ - while (isspace(buffer[0])) - buffer++; - /* Ignore comments */ - if (buffer[0] == '#') - return 0; - - tok = strtok_r(buffer, "=", &ptr); - if (!tok) { - errno = EINVAL; - return -1; - } - strncpy(name1, tok, BUFSIZ - 1); - strtrim(name, name1, namesize - 1); - - tok = strtok_r(NULL, "\0", &ptr); - if (!tok) { - errno = EINVAL; - return -1; - } - - while (isspace(*tok)) - tok++; - - *val = -1; - if (isdigit(tok[0])) - *val = atoi(tok); - else if (!strncasecmp(tok, "true", sizeof("true") - 1)) - *val = 1; - else if (!strncasecmp(tok, "false", sizeof("false") - 1)) - *val = 0; - if (*val != 0 && *val != 1) { - errno = EINVAL; - return -1; - } - return 1; -} -static int save_booleans(size_t boolcnt, SELboolean * boollist) -{ - ssize_t len; - size_t i; - char outbuf[BUFSIZ]; - char *inbuf = NULL; - - /* Open file */ - const char *bool_file = selinux_booleans_path(); - char local_bool_file[PATH_MAX]; - char tmp_bool_file[PATH_MAX]; - FILE *boolf; - int fd; - int *used = (int *)malloc(sizeof(int) * boolcnt); - if (!used) { - return -1; - } - /* zero out used field */ - for (i = 0; i < boolcnt; i++) - used[i] = 0; - - snprintf(tmp_bool_file, sizeof(tmp_bool_file), "%s.XXXXXX", bool_file); - fd = mkstemp(tmp_bool_file); - if (fd < 0) { - free(used); - return -1; - } - - snprintf(local_bool_file, sizeof(local_bool_file), "%s.local", - bool_file); - boolf = fopen(local_bool_file, "re"); - if (boolf != NULL) { - ssize_t ret; - size_t size = 0; - int val; - char boolname[BUFSIZ-3]; - char *buffer; - inbuf = NULL; - __fsetlocking(boolf, FSETLOCKING_BYCALLER); - while ((len = getline(&inbuf, &size, boolf)) > 0) { - buffer = strdup(inbuf); - if (!buffer) - goto close_remove_fail; - ret = - process_boolean(inbuf, boolname, sizeof(boolname), - &val); - if (ret != 1) { - ret = write(fd, buffer, len); - free(buffer); - if (ret != len) - goto close_remove_fail; - } else { - free(buffer); - for (i = 0; i < boolcnt; i++) { - if (strcmp(boollist[i].name, boolname) - == 0) { - snprintf(outbuf, sizeof(outbuf), - "%s=%d\n", boolname, - boollist[i].value); - len = strlen(outbuf); - used[i] = 1; - if (write(fd, outbuf, len) != - len) - goto close_remove_fail; - else - break; - } - } - if (i == boolcnt) { - val = !!val; - snprintf(outbuf, sizeof(outbuf), - "%s=%d\n", boolname, val); - len = strlen(outbuf); - if (write(fd, outbuf, len) != len) - goto close_remove_fail; - } - } - free(inbuf); - inbuf = NULL; - } - fclose(boolf); - } - - for (i = 0; i < boolcnt; i++) { - if (used[i] == 0) { - snprintf(outbuf, sizeof(outbuf), "%s=%d\n", - boollist[i].name, boollist[i].value); - len = strlen(outbuf); - if (write(fd, outbuf, len) != len) { - close_remove_fail: - free(inbuf); - close(fd); - remove_fail: - unlink(tmp_bool_file); - free(used); - return -1; - } - } - - } - if (fchmod(fd, S_IRUSR | S_IWUSR) != 0) - goto close_remove_fail; - close(fd); - if (rename(tmp_bool_file, local_bool_file) != 0) - goto remove_fail; - - free(used); - return 0; -} static void rollback(SELboolean * boollist, int end) { int i; @@ -519,62 +350,18 @@ int security_set_boolean_list(size_t boolcnt, SELboolean * boollist, return -1; } + /* Return error as flag no longer used */ if (permanent) - return save_booleans(boolcnt, boollist); + return -1; return 0; } -int security_load_booleans(char *path) -{ - FILE *boolf; - char *inbuf; - char localbools[BUFSIZ]; - size_t len = 0, errors = 0; - int val; - char name[BUFSIZ]; - - boolf = fopen(path ? path : selinux_booleans_path(), "re"); - if (boolf == NULL) - goto localbool; - - __fsetlocking(boolf, FSETLOCKING_BYCALLER); - while (getline(&inbuf, &len, boolf) > 0) { - int ret = process_boolean(inbuf, name, sizeof(name), &val); - if (ret == -1) - errors++; - if (ret == 1) - if (security_set_boolean(name, val) < 0) { - errors++; - } - } - fclose(boolf); - localbool: - snprintf(localbools, sizeof(localbools), "%s.local", - (path ? path : selinux_booleans_path())); - boolf = fopen(localbools, "re"); - - if (boolf != NULL) { - int ret; - __fsetlocking(boolf, FSETLOCKING_BYCALLER); - while (getline(&inbuf, &len, boolf) > 0) { - ret = process_boolean(inbuf, name, sizeof(name), &val); - if (ret == -1) - errors++; - if (ret == 1) - if (security_set_boolean(name, val) < 0) { - errors++; - } - } - fclose(boolf); - } - if (security_commit_booleans() < 0) - return -1; - if (errors) - errno = EINVAL; - return errors ? -1 : 0; +/* This function is deprecated */ +int security_load_booleans(char *path __attribute__((unused))) +{ + return -1; } - #else #include diff --git a/libselinux/src/file_path_suffixes.h b/libselinux/src/file_path_suffixes.h index 2d3ca497..a5573134 100644 --- a/libselinux/src/file_path_suffixes.h +++ b/libselinux/src/file_path_suffixes.h @@ -8,10 +8,12 @@ S_(BINPOLICY, "/policy/policy") S_(FAILSAFE_CONTEXT, "/contexts/failsafe_context") S_(DEFAULT_TYPE, "/contexts/default_type") S_(SECURETTY_TYPES, "/contexts/securetty_types") + /* BOOLEANS is deprecated */ S_(BOOLEANS, "/booleans") S_(MEDIA_CONTEXTS, "/contexts/files/media") S_(REMOVABLE_CONTEXT, "/contexts/removable_context") S_(CUSTOMIZABLE_TYPES, "/contexts/customizable_types") + /* USERS_DIR is deprecated */ S_(USERS_DIR, "/users/") S_(SEUSERS, "/seusers") S_(TRANSLATIONS, "/setrans.conf") diff --git a/libselinux/src/load_policy.c b/libselinux/src/load_policy.c index 20052beb..9e75292d 100644 --- a/libselinux/src/load_policy.c +++ b/libselinux/src/load_policy.c @@ -48,22 +48,18 @@ int security_load_policy(void *data, size_t len) hidden_def(security_load_policy) #ifndef ANDROID -int load_setlocaldefs hidden = 1; - #undef max #define max(a, b) (((a) > (b)) ? (a) : (b)) -int selinux_mkload_policy(int preservebools) +int selinux_mkload_policy(int preservebools __attribute__((unused))) { int kernvers = security_policyvers(); int maxvers = kernvers, minvers = DEFAULT_POLICY_VERSION, vers; - int setlocaldefs = load_setlocaldefs; char path[PATH_MAX]; struct stat sb; - struct utsname uts; size_t size; void *map, *data; - int fd, rc = -1, prot; + int fd, rc = -1; sepol_policydb_t *policydb; sepol_policy_file_t *pf; int usesepol = 0; @@ -77,9 +73,6 @@ int selinux_mkload_policy(int preservebools) int (*policydb_read)(sepol_policydb_t *, sepol_policy_file_t *) = NULL; int (*policydb_set_vers)(sepol_policydb_t *, unsigned int) = NULL; int (*policydb_to_image)(sepol_handle_t *, sepol_policydb_t *, void **, size_t *) = NULL; - int (*genbools_array)(void *data, size_t len, char **names, int *values, int nel) = NULL; - int (*genusers)(void *data, size_t len, const char *usersdir, void **newdata, size_t * newlen) = NULL; - int (*genbools)(void *data, size_t len, const char *boolpath) = NULL; #ifdef SHARED char *errormsg = NULL; @@ -110,13 +103,6 @@ int selinux_mkload_policy(int preservebools) DLERR(); policydb_to_image = dlsym(libsepolh, "sepol_policydb_to_image"); DLERR(); - genbools_array = dlsym(libsepolh, "sepol_genbools_array"); - DLERR(); - genusers = dlsym(libsepolh, "sepol_genusers"); - DLERR(); - genbools = dlsym(libsepolh, "sepol_genbools"); - DLERR(); - #undef DLERR } #else @@ -131,42 +117,11 @@ int selinux_mkload_policy(int preservebools) policydb_read = sepol_policydb_read; policydb_set_vers = sepol_policydb_set_vers; policydb_to_image = sepol_policydb_to_image; - genbools_array = sepol_genbools_array; - genusers = sepol_genusers; - genbools = sepol_genbools; - #endif - /* - * Check whether we need to support local boolean and user definitions. - */ - if (setlocaldefs) { - if (access(selinux_booleans_path(), F_OK) == 0) - goto checkbool; - snprintf(path, sizeof path, "%s.local", selinux_booleans_path()); - if (access(path, F_OK) == 0) - goto checkbool; - snprintf(path, sizeof path, "%s/local.users", selinux_users_path()); - if (access(path, F_OK) == 0) - goto checkbool; - /* No local definition files, so disable setlocaldefs. */ - setlocaldefs = 0; - } - -checkbool: - /* - * As of Linux 2.6.22, the kernel preserves boolean - * values across a reload, so we do not need to - * preserve them in userspace. - */ - if (preservebools && uname(&uts) == 0 && strverscmp(uts.release, "2.6.22") >= 0) - preservebools = 0; - if (usesepol) { - maxvers = vers_max(); + maxvers = max(kernvers, vers_max()); minvers = vers_min(); - if (!setlocaldefs && !preservebools) - maxvers = max(kernvers, maxvers); } vers = maxvers; @@ -195,12 +150,8 @@ checkbool: goto close; } - prot = PROT_READ; - if (setlocaldefs || preservebools) - prot |= PROT_WRITE; - size = sb.st_size; - data = map = mmap(NULL, size, prot, MAP_PRIVATE, fd, 0); + data = map = mmap(NULL, size, PROT_READ, MAP_PRIVATE, fd, 0); if (map == MAP_FAILED) { fprintf(stderr, "SELinux: Could not map policy file %s: %s\n", @@ -239,49 +190,6 @@ checkbool: policydb_free(policydb); } - if (usesepol) { - if (setlocaldefs) { - void *olddata = data; - size_t oldsize = size; - rc = genusers(olddata, oldsize, selinux_users_path(), - &data, &size); - if (rc < 0) { - /* Fall back to the prior image if genusers failed. */ - data = olddata; - size = oldsize; - rc = 0; - } else { - if (olddata != map) - free(olddata); - } - } - - if (preservebools) { - int *values, len, i; - char **names; - rc = security_get_boolean_names(&names, &len); - if (!rc) { - values = malloc(sizeof(int) * len); - if (!values) { - free(names); - goto unmap; - } - for (i = 0; i < len; i++) - values[i] = - security_get_boolean_active(names[i]); - (void)genbools_array(data, size, names, values, - len); - free(values); - for (i = 0; i < len; i++) - free(names[i]); - free(names); - } - } else if (setlocaldefs) { - (void)genbools(data, size, selinux_booleans_path()); - } - } - - rc = security_load_policy(data, size); if (rc) diff --git a/libselinux/src/selinux_config.c b/libselinux/src/selinux_config.c index b06cb63b..b16a3851 100644 --- a/libselinux/src/selinux_config.c +++ b/libselinux/src/selinux_config.c @@ -16,7 +16,6 @@ #define SELINUXDEFAULT "targeted" #define SELINUXTYPETAG "SELINUXTYPE=" #define SELINUXTAG "SELINUX=" -#define SETLOCALDEFS "SETLOCALDEFS=" #define REQUIRESEUSERS "REQUIRESEUSERS=" /* Indices for file paths arrays. */ @@ -28,10 +27,12 @@ #define USER_CONTEXTS 5 #define FAILSAFE_CONTEXT 6 #define DEFAULT_TYPE 7 +/* BOOLEANS is deprecated */ #define BOOLEANS 8 #define MEDIA_CONTEXTS 9 #define REMOVABLE_CONTEXT 10 #define CUSTOMIZABLE_TYPES 11 +/* USERS_DIR is deprecated */ #define USERS_DIR 12 #define SEUSERS 13 #define TRANSLATIONS 14 @@ -192,10 +193,6 @@ static void init_selinux_config(void) } free(type); continue; - } else if (!strncmp(buf_p, SETLOCALDEFS, - sizeof(SETLOCALDEFS) - 1)) { - value = buf_p + sizeof(SETLOCALDEFS) - 1; - intptr = &load_setlocaldefs; } else if (!strncmp(buf_p, REQUIRESEUSERS, sizeof(REQUIRESEUSERS) - 1)) { value = buf_p + sizeof(REQUIRESEUSERS) - 1; @@ -410,6 +407,7 @@ const char *selinux_user_contexts_path(void) hidden_def(selinux_user_contexts_path) +/* Deprecated as local policy booleans no longer supported. */ const char *selinux_booleans_path(void) { return get_path(BOOLEANS); @@ -417,6 +415,7 @@ const char *selinux_booleans_path(void) hidden_def(selinux_booleans_path) +/* Deprecated as no longer supported. */ const char *selinux_users_path(void) { return get_path(USERS_DIR); diff --git a/libselinux/src/selinux_internal.h b/libselinux/src/selinux_internal.h index acd59c7c..8b4bed2f 100644 --- a/libselinux/src/selinux_internal.h +++ b/libselinux/src/selinux_internal.h @@ -110,7 +110,6 @@ hidden_proto(selinux_reset_config); hidden void flush_class_cache(void); -extern int load_setlocaldefs hidden; extern int require_seusers hidden; extern int selinux_page_size hidden; diff --git a/libsepol/include/sepol/booleans.h b/libsepol/include/sepol/booleans.h index 2966903d..06d2230c 100644 --- a/libsepol/include/sepol/booleans.h +++ b/libsepol/include/sepol/booleans.h @@ -10,23 +10,10 @@ extern "C" { #endif -/*--------------compatibility--------------*/ - -/* Given an existing binary policy (starting at 'data', with length 'len') - and a boolean configuration file named by 'boolpath', rewrite the binary - policy for the boolean settings in the boolean configuration file. - The binary policy is rewritten in place in memory. - Returns 0 upon success, or -1 otherwise. */ +/* These two functions are deprecated. See src/deprecated_funcs.c */ extern int sepol_genbools(void *data, size_t len, const char *boolpath); - -/* Given an existing binary policy (starting at 'data', with length 'len') - and boolean settings specified by the parallel arrays ('names', 'values') - with 'nel' elements, rewrite the binary policy for the boolean settings. - The binary policy is rewritten in place in memory. - Returns 0 upon success or -1 otherwise. */ extern int sepol_genbools_array(void *data, size_t len, char **names, int *values, int nel); -/*---------------end compatbility------------*/ /* Set the specified boolean */ extern int sepol_bool_set(sepol_handle_t * handle, diff --git a/libsepol/include/sepol/policydb/services.h b/libsepol/include/sepol/policydb/services.h index 6ef27a8c..776c2cff 100644 --- a/libsepol/include/sepol/policydb/services.h +++ b/libsepol/include/sepol/policydb/services.h @@ -30,12 +30,6 @@ extern "C" { extern int sepol_set_policydb(policydb_t * p); extern int sepol_set_sidtab(sidtab_t * s); -/* Modify a policydb for boolean settings. */ -int sepol_genbools_policydb(policydb_t * policydb, const char *booleans); - -/* Modify a policydb for user settings. */ -int sepol_genusers_policydb(policydb_t * policydb, const char *usersdir); - /* Load the security policy. This initializes the policydb and sidtab based on the provided binary policy. */ extern int sepol_load_policy(void *data, size_t len); diff --git a/libsepol/include/sepol/users.h b/libsepol/include/sepol/users.h index ad23f89b..70158ac4 100644 --- a/libsepol/include/sepol/users.h +++ b/libsepol/include/sepol/users.h @@ -10,23 +10,12 @@ extern "C" { #endif -/*---------compatibility------------*/ - -/* Given an existing binary policy (starting at 'data with length 'len') - and user configurations living in 'usersdir', generate a new binary - policy for the new user configurations. Sets '*newdata' and '*newlen' - to refer to the new binary policy image. */ +/* These two functions are deprecated. See src/deprecated_funcs.c */ extern int sepol_genusers(void *data, size_t len, const char *usersdir, void **newdata, size_t * newlen); - -/* Enable or disable deletion of users by sepol_genusers(3) when - a user in original binary policy image is not defined by the - new user configurations. Defaults to disabled. */ extern void sepol_set_delusers(int on); -/*--------end compatibility----------*/ - /* Modify the user, or add it, if the key is not found */ extern int sepol_user_modify(sepol_handle_t * handle, sepol_policydb_t * policydb, diff --git a/libsepol/src/deprecated_funcs.c b/libsepol/src/deprecated_funcs.c new file mode 100644 index 00000000..d0dab7df --- /dev/null +++ b/libsepol/src/deprecated_funcs.c @@ -0,0 +1,50 @@ +#include +#include "debug.h" + +/* + * Need to keep these stubs for the libsepol interfaces exported in + * libsepol.map.in, as they are part of the shared library ABI. + */ + +static const char *msg = "Deprecated interface"; + +/* + * These two functions are deprecated and referenced in: + * include/libsepol/users.h + */ +int sepol_genusers(void *data __attribute((unused)), + size_t len __attribute((unused)), + const char *usersdir __attribute((unused)), + void **newdata __attribute((unused)), + size_t *newlen __attribute((unused))) +{ + WARN(NULL, "%s", msg); + return -1; +} + +void sepol_set_delusers(int on __attribute((unused))) +{ + WARN(NULL, "%s", msg); +} + +/* + * These two functions are deprecated and referenced in: + * include/libsepol/booleans.h + */ +int sepol_genbools(void *data __attribute((unused)), + size_t len __attribute((unused)), + const char *booleans __attribute((unused))) +{ + WARN(NULL, "%s", msg); + return -1; +} + +int sepol_genbools_array(void *data __attribute((unused)), + size_t len __attribute((unused)), + char **names __attribute((unused)), + int *values __attribute((unused)), + int nel __attribute((unused))) +{ + WARN(NULL, "%s", msg); + return -1; +} diff --git a/libsepol/src/genbools.c b/libsepol/src/genbools.c deleted file mode 100644 index d4a2df62..00000000 --- a/libsepol/src/genbools.c +++ /dev/null @@ -1,279 +0,0 @@ -#include -#include -#include -#include - -#include -#include - -#include "debug.h" -#include "private.h" -#include "dso.h" - -/* -- Deprecated -- */ - -static char *strtrim(char *dest, char *source, int size) -{ - int i = 0; - char *ptr = source; - i = 0; - while (isspace(*ptr) && i < size) { - ptr++; - i++; - } - strncpy(dest, ptr, size); - for (i = strlen(dest) - 1; i > 0; i--) { - if (!isspace(dest[i])) - break; - } - dest[i + 1] = '\0'; - return dest; -} - -static int process_boolean(char *buffer, char *name, int namesize, int *val) -{ - char name1[BUFSIZ]; - char *ptr = NULL; - char *tok; - - /* Skip spaces */ - while (isspace(buffer[0])) - buffer++; - /* Ignore comments */ - if (buffer[0] == '#') - return 0; - - tok = strtok_r(buffer, "=", &ptr); - if (!tok) { - ERR(NULL, "illegal boolean definition %s", buffer); - return -1; - } - strncpy(name1, tok, BUFSIZ - 1); - strtrim(name, name1, namesize - 1); - - tok = strtok_r(NULL, "\0", &ptr); - if (!tok) { - ERR(NULL, "illegal boolean definition %s=%s", name, buffer); - return -1; - } - - while (isspace(*tok)) - tok++; - - *val = -1; - if (isdigit(tok[0])) - *val = atoi(tok); - else if (!strncasecmp(tok, "true", sizeof("true") - 1)) - *val = 1; - else if (!strncasecmp(tok, "false", sizeof("false") - 1)) - *val = 0; - if (*val != 0 && *val != 1) { - ERR(NULL, "illegal value for boolean %s=%s", name, tok); - return -1; - } - return 1; -} - -static int load_booleans(struct policydb *policydb, const char *path, - int *changesp) -{ - FILE *boolf; - char *buffer = NULL; - char localbools[BUFSIZ]; - char name[BUFSIZ]; - int val; - int errors = 0, changes = 0; - struct cond_bool_datum *datum; - - boolf = fopen(path, "r"); - if (boolf == NULL) - goto localbool; - -#ifdef __APPLE__ - if ((buffer = (char *)malloc(255 * sizeof(char))) == NULL) { - ERR(NULL, "out of memory"); - return -1; - } - - while(fgets(buffer, 255, boolf) != NULL) { -#else - size_t size = 0; - while (getline(&buffer, &size, boolf) > 0) { -#endif - int ret = process_boolean(buffer, name, sizeof(name), &val); - if (ret == -1) - errors++; - if (ret == 1) { - datum = hashtab_search(policydb->p_bools.table, name); - if (!datum) { - ERR(NULL, "unknown boolean %s", name); - errors++; - continue; - } - if (datum->state != val) { - datum->state = val; - changes++; - } - } - } - fclose(boolf); - localbool: - snprintf(localbools, sizeof(localbools), "%s.local", path); - boolf = fopen(localbools, "r"); - if (boolf != NULL) { - -#ifdef __APPLE__ - - while(fgets(buffer, 255, boolf) != NULL) { -#else - - while (getline(&buffer, &size, boolf) > 0) { -#endif - int ret = - process_boolean(buffer, name, sizeof(name), &val); - if (ret == -1) - errors++; - if (ret == 1) { - datum = - hashtab_search(policydb->p_bools.table, - name); - if (!datum) { - ERR(NULL, "unknown boolean %s", name); - errors++; - continue; - } - if (datum->state != val) { - datum->state = val; - changes++; - } - } - } - fclose(boolf); - } - free(buffer); - if (errors) - errno = EINVAL; - *changesp = changes; - return errors ? -1 : 0; -} - -int sepol_genbools(void *data, size_t len, const char *booleans) -{ - struct policydb policydb; - struct policy_file pf; - int rc, changes = 0; - - if (policydb_init(&policydb)) - goto err; - if (policydb_from_image(NULL, data, len, &policydb) < 0) - goto err; - - if (load_booleans(&policydb, booleans, &changes) < 0) { - WARN(NULL, "error while reading %s", booleans); - } - - if (!changes) - goto out; - - if (evaluate_conds(&policydb) < 0) { - ERR(NULL, "error while re-evaluating conditionals"); - errno = EINVAL; - goto err_destroy; - } - - policy_file_init(&pf); - pf.type = PF_USE_MEMORY; - pf.data = data; - pf.len = len; - rc = policydb_write(&policydb, &pf); - if (rc) { - ERR(NULL, "unable to write new binary policy image"); - errno = EINVAL; - goto err_destroy; - } - - out: - policydb_destroy(&policydb); - return 0; - - err_destroy: - policydb_destroy(&policydb); - - err: - return -1; -} - -int hidden sepol_genbools_policydb(policydb_t * policydb, const char *booleans) -{ - int rc, changes = 0; - - rc = load_booleans(policydb, booleans, &changes); - if (!rc && changes) - rc = evaluate_conds(policydb); - if (rc) - errno = EINVAL; - return rc; -} - -/* -- End Deprecated -- */ - -int sepol_genbools_array(void *data, size_t len, char **names, int *values, - int nel) -{ - struct policydb policydb; - struct policy_file pf; - int rc, i, errors = 0; - struct cond_bool_datum *datum; - - /* Create policy database from image */ - if (policydb_init(&policydb)) - goto err; - if (policydb_from_image(NULL, data, len, &policydb) < 0) - goto err; - - for (i = 0; i < nel; i++) { - datum = hashtab_search(policydb.p_bools.table, names[i]); - if (!datum) { - ERR(NULL, "boolean %s no longer in policy", names[i]); - errors++; - continue; - } - if (values[i] != 0 && values[i] != 1) { - ERR(NULL, "illegal value %d for boolean %s", - values[i], names[i]); - errors++; - continue; - } - datum->state = values[i]; - } - - if (evaluate_conds(&policydb) < 0) { - ERR(NULL, "error while re-evaluating conditionals"); - errno = EINVAL; - goto err_destroy; - } - - policy_file_init(&pf); - pf.type = PF_USE_MEMORY; - pf.data = data; - pf.len = len; - rc = policydb_write(&policydb, &pf); - if (rc) { - ERR(NULL, "unable to write binary policy"); - errno = EINVAL; - goto err_destroy; - } - if (errors) { - errno = EINVAL; - goto err_destroy; - } - - policydb_destroy(&policydb); - return 0; - - err_destroy: - policydb_destroy(&policydb); - - err: - return -1; -} diff --git a/libsepol/src/genusers.c b/libsepol/src/genusers.c deleted file mode 100644 index c375c669..00000000 --- a/libsepol/src/genusers.c +++ /dev/null @@ -1,343 +0,0 @@ -#include - -#include -#include -#include -#include - -#include - -#ifndef __APPLE__ -#include -#endif - -#include - -#include "debug.h" -#include "private.h" -#include "dso.h" -#include "mls.h" - -/* -- Deprecated -- */ - -void sepol_set_delusers(int on __attribute((unused))) -{ - WARN(NULL, "Deprecated interface"); -} - -#undef BADLINE -#define BADLINE() { \ - ERR(NULL, "invalid entry %s (%s:%u)", \ - buffer, path, lineno); \ - continue; \ -} - -static int load_users(struct policydb *policydb, const char *path) -{ - FILE *fp; - char *buffer = NULL, *p, *q, oldc; - ssize_t nread; - unsigned lineno = 0, islist = 0, bit; - user_datum_t *usrdatum; - role_datum_t *roldatum; - ebitmap_node_t *rnode; - - fp = fopen(path, "r"); - if (fp == NULL) - return -1; - -#ifdef __APPLE__ - if ((buffer = (char *)malloc(255 * sizeof(char))) == NULL) { - ERR(NULL, "out of memory"); - return -1; - } - - while(fgets(buffer, 255, fp) != NULL) { - nread = strlen(buffer); -#else - size_t len = 0; - __fsetlocking(fp, FSETLOCKING_BYCALLER); - while ((nread = getline(&buffer, &len, fp)) > 0) { -#endif - - lineno++; - if (buffer[nread - 1] == '\n') - buffer[nread - 1] = 0; - p = buffer; - while (*p && isspace(*p)) - p++; - if (!(*p) || *p == '#') - continue; - - if (strncasecmp(p, "user", 4)) - BADLINE(); - p += 4; - if (!isspace(*p)) - BADLINE(); - while (*p && isspace(*p)) - p++; - if (!(*p)) - BADLINE(); - q = p; - while (*p && !isspace(*p)) - p++; - if (!(*p)) - BADLINE(); - *p++ = 0; - - usrdatum = hashtab_search(policydb->p_users.table, q); - if (usrdatum) { - /* Replacing an existing user definition. */ - ebitmap_destroy(&usrdatum->roles.roles); - ebitmap_init(&usrdatum->roles.roles); - } else { - char *id = strdup(q); - - if (!id) { - ERR(NULL, "out of memory"); - free(buffer); - fclose(fp); - return -1; - } - - /* Adding a new user definition. */ - usrdatum = malloc(sizeof(user_datum_t)); - if (!usrdatum) { - ERR(NULL, "out of memory"); - free(buffer); - free(id); - fclose(fp); - return -1; - } - - user_datum_init(usrdatum); - usrdatum->s.value = ++policydb->p_users.nprim; - if (hashtab_insert(policydb->p_users.table, - id, (hashtab_datum_t) usrdatum)) { - ERR(NULL, "out of memory"); - free(buffer); - free(id); - user_datum_destroy(usrdatum); - free(usrdatum); - fclose(fp); - return -1; - } - } - - while (*p && isspace(*p)) - p++; - if (!(*p)) - BADLINE(); - if (strncasecmp(p, "roles", 5)) - BADLINE(); - p += 5; - if (!isspace(*p)) - BADLINE(); - while (*p && isspace(*p)) - p++; - if (!(*p)) - BADLINE(); - if (*p == '{') { - islist = 1; - p++; - } else - islist = 0; - - oldc = 0; - do { - while (*p && isspace(*p)) - p++; - if (!(*p)) - break; - - q = p; - while (*p && *p != ';' && *p != '}' && !isspace(*p)) - p++; - if (!(*p)) - break; - if (*p == '}') - islist = 0; - oldc = *p; - *p++ = 0; - if (!q[0]) - break; - - roldatum = hashtab_search(policydb->p_roles.table, q); - if (!roldatum) { - ERR(NULL, "undefined role %s (%s:%u)", - q, path, lineno); - continue; - } - /* Set the role and every role it dominates */ - ebitmap_for_each_positive_bit(&roldatum->dominates, rnode, bit) { - if (ebitmap_set_bit - (&usrdatum->roles.roles, bit, 1)) { - ERR(NULL, "out of memory"); - free(buffer); - fclose(fp); - return -1; - } - } - } while (islist); - if (oldc == 0) - BADLINE(); - - if (policydb->mls) { - context_struct_t context; - char *scontext, *r, *s; - - while (*p && isspace(*p)) - p++; - if (!(*p)) - BADLINE(); - if (strncasecmp(p, "level", 5)) - BADLINE(); - p += 5; - if (!isspace(*p)) - BADLINE(); - while (*p && isspace(*p)) - p++; - if (!(*p)) - BADLINE(); - q = p; - while (*p && (!isspace(*p) || strncasecmp(p + 1, "range", 5))) - p++; - if (!(*p) || p == q) - BADLINE(); - *p = 0; - p++; - - scontext = malloc(p - q); - if (!scontext) { - ERR(NULL, "out of memory"); - free(buffer); - fclose(fp); - return -1; - } - r = scontext; - s = q; - while (*s) { - if (!isspace(*s)) - *r++ = *s; - s++; - } - *r = 0; - r = scontext; - - context_init(&context); - if (mls_context_to_sid(policydb, oldc, &r, &context) < - 0) { - ERR(NULL, "invalid level %s (%s:%u)", scontext, - path, lineno); - free(scontext); - continue; - - } - free(scontext); - memcpy(&usrdatum->dfltlevel, &context.range.level[0], - sizeof(usrdatum->dfltlevel)); - - if (strncasecmp(p, "range", 5)) - BADLINE(); - p += 5; - if (!isspace(*p)) - BADLINE(); - while (*p && isspace(*p)) - p++; - if (!(*p)) - BADLINE(); - q = p; - while (*p && *p != ';') - p++; - if (!(*p)) - BADLINE(); - *p++ = 0; - - scontext = malloc(p - q); - if (!scontext) { - ERR(NULL, "out of memory"); - free(buffer); - fclose(fp); - return -1; - } - r = scontext; - s = q; - while (*s) { - if (!isspace(*s)) - *r++ = *s; - s++; - } - *r = 0; - r = scontext; - - context_init(&context); - if (mls_context_to_sid(policydb, oldc, &r, &context) < - 0) { - ERR(NULL, "invalid range %s (%s:%u)", scontext, - path, lineno); - free(scontext); - continue; - } - free(scontext); - memcpy(&usrdatum->range, &context.range, - sizeof(usrdatum->range)); - } - } - - free(buffer); - fclose(fp); - return 0; -} - -int sepol_genusers(void *data, size_t len, - const char *usersdir, void **newdata, size_t * newlen) -{ - struct policydb policydb; - char path[PATH_MAX]; - - /* Construct policy database */ - if (policydb_init(&policydb)) - goto err; - if (policydb_from_image(NULL, data, len, &policydb) < 0) - goto err; - - /* Load locally defined users. */ - snprintf(path, sizeof path, "%s/local.users", usersdir); - if (load_users(&policydb, path) < 0) - goto err_destroy; - - /* Write policy database */ - if (policydb_to_image(NULL, &policydb, newdata, newlen) < 0) - goto err_destroy; - - policydb_destroy(&policydb); - return 0; - - err_destroy: - policydb_destroy(&policydb); - - err: - return -1; -} - -int hidden sepol_genusers_policydb(policydb_t * policydb, const char *usersdir) -{ - char path[PATH_MAX]; - - /* Load locally defined users. */ - snprintf(path, sizeof path, "%s/local.users", usersdir); - if (load_users(policydb, path) < 0) { - ERR(NULL, "unable to load local.users: %s", strerror(errno)); - return -1; - } - - if (policydb_reindex_users(policydb) < 0) { - ERR(NULL, "unable to reindex users: %s", strerror(errno)); - return -1; - - } - - return 0; -} - -/* -- End Deprecated -- */ diff --git a/policycoreutils/load_policy/load_policy.c b/policycoreutils/load_policy/load_policy.c index 2707d6fe..322ed002 100644 --- a/policycoreutils/load_policy/load_policy.c +++ b/policycoreutils/load_policy/load_policy.c @@ -77,7 +77,7 @@ int main(int argc, char **argv) } } else { - ret = selinux_mkload_policy(1); + ret = selinux_mkload_policy(0); } if (ret < 0) { fprintf(stderr, _("%s: Can't load policy: %s\n"),