diff options
Diffstat (limited to 'plugins/sudoers/cvtsudoers_json.c')
| -rw-r--r-- | plugins/sudoers/cvtsudoers_json.c | 937 |
1 files changed, 937 insertions, 0 deletions
diff --git a/plugins/sudoers/cvtsudoers_json.c b/plugins/sudoers/cvtsudoers_json.c new file mode 100644 index 0000000..3ff543d --- /dev/null +++ b/plugins/sudoers/cvtsudoers_json.c @@ -0,0 +1,937 @@ +/* + * SPDX-License-Identifier: ISC + * + * Copyright (c) 2013-2023 Todd C. Miller <Todd.Miller@sudo.ws> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +/* + * This is an open source non-commercial project. Dear PVS-Studio, please check it. + * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com + */ + +#include <config.h> + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <stdarg.h> +#include <ctype.h> + +#include <sudoers.h> +#include <sudo_json.h> +#include <cvtsudoers.h> +#include <gram.h> + +/* + * Closure used to store state when iterating over all aliases. + */ +struct json_alias_closure { + struct json_container *jsonc; + const char *title; + unsigned int count; + short alias_type; +}; + +/* + * Type values used to disambiguate the generic WORD and ALIAS types. + */ +enum word_type { + TYPE_COMMAND, + TYPE_HOSTNAME, + TYPE_RUNASGROUP, + TYPE_RUNASUSER, + TYPE_USERNAME +}; + +/* + * Print sudo command member in JSON format, with correct indentation. + */ +static void +print_command_json(struct json_container *jsonc, const char *name, bool negated) +{ + struct sudo_command *c = (struct sudo_command *)name; + struct command_digest *digest; + struct json_value value; + char *cmnd = c->cmnd; + const char *digest_name; + debug_decl(print_command_json, SUDOERS_DEBUG_UTIL); + + /* Print command with optional command line args. */ + if (c->args != NULL) { + if (asprintf(&cmnd, "%s %s", c->cmnd, c->args) == -1) { + sudo_fatalx(U_("%s: %s"), __func__, + U_("unable to allocate memory")); + } + } + value.type = JSON_STRING; + value.u.string = cmnd ? cmnd : (char *)"ALL"; + + if (!negated && TAILQ_EMPTY(&c->digests)) { + /* Print as { "command": "command and args" } */ + sudo_json_add_value_as_object(jsonc, "command", &value); + } else { + /* Print as multi-line object. */ + sudo_json_open_object(jsonc, NULL); + sudo_json_add_value(jsonc, "command", &value); + + /* Optional digest list. */ + TAILQ_FOREACH(digest, &c->digests, entries) { + digest_name = digest_type_to_name(digest->digest_type); + value.type = JSON_STRING; + value.u.string = digest->digest_str; + sudo_json_add_value(jsonc, digest_name, &value); + } + + /* Command may be negated. */ + if (negated) { + value.type = JSON_BOOL; + value.u.boolean = true; + sudo_json_add_value(jsonc, "negated", &value); + } + + sudo_json_close_object(jsonc); + } + + if (cmnd != c->cmnd) + free(cmnd); + + debug_return; +} + +/* + * Map an alias type to enum word_type. + */ +static enum word_type +alias_to_word_type(short alias_type) +{ + switch (alias_type) { + case CMNDALIAS: + return TYPE_COMMAND; + case HOSTALIAS: + return TYPE_HOSTNAME; + case RUNASALIAS: + return TYPE_RUNASUSER; + case USERALIAS: + return TYPE_USERNAME; + default: + sudo_fatalx_nodebug("unexpected alias type %d", alias_type); + } +} + +/* + * Map a Defaults type to enum word_type. + */ +static enum word_type +defaults_to_word_type(int defaults_type) +{ + switch (defaults_type) { + case DEFAULTS_CMND: + return TYPE_COMMAND; + case DEFAULTS_HOST: + return TYPE_HOSTNAME; + case DEFAULTS_RUNAS: + return TYPE_RUNASUSER; + case DEFAULTS_USER: + return TYPE_USERNAME; + default: + sudo_fatalx_nodebug("unexpected defaults type %d", defaults_type); + } +} + +/* + * Print struct member in JSON format, with correct indentation. + */ +static void +print_member_json_int(struct json_container *jsonc, + const struct sudoers_parse_tree *parse_tree, char *name, int type, + bool negated, enum word_type word_type, bool expand_aliases) +{ + struct json_value value; + const char *typestr = NULL; + const char *errstr; + short alias_type = UNSPEC; + id_t id; + debug_decl(print_member_json_int, SUDOERS_DEBUG_UTIL); + + /* Most of the time we print a string. */ + value.type = JSON_STRING; + switch (type) { + case ALL: + if (name == NULL) { + value.u.string = "ALL"; + } else { + /* ALL used with digest, print as a command. */ + type = COMMAND; + } + break; + case MYSELF: + value.u.string = ""; + break; + default: + if (name == NULL) + sudo_fatalx("missing member name for type %d", type); + value.u.string = name; + } + + switch (type) { + case USERGROUP: + value.u.string++; /* skip leading '%' */ + if (*value.u.string == ':') { + value.u.string++; + typestr = "nonunixgroup"; + if (*value.u.string == '#') { + id = sudo_strtoid(value.u.string + 1, &errstr); + if (errstr != NULL) { + sudo_warnx("internal error: non-Unix group-ID %s: \"%s\"", + errstr, value.u.string + 1); + } else { + value.type = JSON_ID; + value.u.id = id; + typestr = "nonunixgid"; + } + } + } else { + typestr = "usergroup"; + if (*value.u.string == '#') { + id = sudo_strtoid(value.u.string + 1, &errstr); + if (errstr != NULL) { + sudo_warnx("internal error: group-ID %s: \"%s\"", + errstr, value.u.string + 1); + } else { + value.type = JSON_ID; + value.u.id = id; + typestr = "usergid"; + } + } + } + break; + case NETGROUP: + typestr = "netgroup"; + value.u.string++; /* skip leading '+' */ + break; + case NTWKADDR: + typestr = "networkaddr"; + break; + case COMMAND: + print_command_json(jsonc, name, negated); + debug_return; + case ALL: + case MYSELF: + case WORD: + switch (word_type) { + case TYPE_COMMAND: + typestr = "command"; + break; + case TYPE_HOSTNAME: + typestr = "hostname"; + break; + case TYPE_RUNASGROUP: + typestr = "usergroup"; + break; + case TYPE_RUNASUSER: + case TYPE_USERNAME: + typestr = "username"; + if (*value.u.string == '#') { + id = sudo_strtoid(value.u.string + 1, &errstr); + if (errstr != NULL) { + sudo_warnx("internal error: user-ID %s: \"%s\"", + errstr, name); + } else { + value.type = JSON_ID; + value.u.id = id; + typestr = "userid"; + } + } + break; + default: + sudo_fatalx("unexpected word type %d", word_type); + } + break; + case ALIAS: + switch (word_type) { + case TYPE_COMMAND: + if (expand_aliases) { + alias_type = CMNDALIAS; + } else { + typestr = "cmndalias"; + } + break; + case TYPE_HOSTNAME: + if (expand_aliases) { + alias_type = HOSTALIAS; + } else { + typestr = "hostalias"; + } + break; + case TYPE_RUNASGROUP: + case TYPE_RUNASUSER: + if (expand_aliases) { + alias_type = RUNASALIAS; + } else { + typestr = "runasalias"; + } + break; + case TYPE_USERNAME: + if (expand_aliases) { + alias_type = USERALIAS; + } else { + typestr = "useralias"; + } + break; + default: + sudo_fatalx("unexpected word type %d", word_type); + } + break; + default: + sudo_fatalx("unexpected member type %d", type); + } + + if (expand_aliases && type == ALIAS) { + struct alias *a; + struct member *m; + + /* Print each member of the alias. */ + if ((a = alias_get(parse_tree, value.u.string, alias_type)) != NULL) { + TAILQ_FOREACH(m, &a->members, entries) { + print_member_json_int(jsonc, parse_tree, m->name, m->type, + negated ? !m->negated : m->negated, + alias_to_word_type(alias_type), true); + } + alias_put(a); + } + } else { + if (negated) { + sudo_json_open_object(jsonc, NULL); + sudo_json_add_value(jsonc, typestr, &value); + value.type = JSON_BOOL; + value.u.boolean = true; + sudo_json_add_value(jsonc, "negated", &value); + sudo_json_close_object(jsonc); + } else { + sudo_json_add_value_as_object(jsonc, typestr, &value); + } + } + + debug_return; +} + +static void +print_member_json(struct json_container *jsonc, + const struct sudoers_parse_tree *parse_tree, struct member *m, + enum word_type word_type, bool expand_aliases) +{ + print_member_json_int(jsonc, parse_tree, m->name, m->type, m->negated, + word_type, expand_aliases); +} + +/* + * Callback for alias_apply() to print an alias entry if it matches + * the type specified in the closure. + */ +static int +print_alias_json(struct sudoers_parse_tree *parse_tree, struct alias *a, + void *v) +{ + struct json_alias_closure *closure = v; + struct member *m; + debug_decl(print_alias_json, SUDOERS_DEBUG_UTIL); + + if (a->type != closure->alias_type) + debug_return_int(0); + + /* Open the aliases object or close the last entry, then open new one. */ + if (closure->count++ == 0) { + sudo_json_open_object(closure->jsonc, closure->title); + } else { + sudo_json_close_array(closure->jsonc); + } + sudo_json_open_array(closure->jsonc, a->name); + + TAILQ_FOREACH(m, &a->members, entries) { + print_member_json(closure->jsonc, parse_tree, m, + alias_to_word_type(closure->alias_type), false); + } + debug_return_int(0); +} + +/* + * Print the binding for a Defaults entry of the specified type. + */ +static void +print_binding_json(struct json_container *jsonc, + const struct sudoers_parse_tree *parse_tree, + struct defaults_binding *binding, int type, bool expand_aliases) +{ + struct member *m; + debug_decl(print_binding_json, SUDOERS_DEBUG_UTIL); + + if (TAILQ_EMPTY(&binding->members)) + debug_return; + + /* Print each member object in binding. */ + sudo_json_open_array(jsonc, "Binding"); + TAILQ_FOREACH(m, &binding->members, entries) { + print_member_json(jsonc, parse_tree, m, defaults_to_word_type(type), + expand_aliases); + } + sudo_json_close_array(jsonc); + + debug_return; +} + +/* + * Print a Defaults list JSON format. + */ +static void +print_defaults_list_json(struct json_container *jsonc, struct defaults *def) +{ + char savech, *start, *end = def->val; + struct json_value value; + debug_decl(print_defaults_list_json, SUDOERS_DEBUG_UTIL); + + sudo_json_open_object(jsonc, NULL); + value.type = JSON_STRING; + switch (def->op) { + case '+': + value.u.string = "list_add"; + break; + case '-': + value.u.string = "list_remove"; + break; + case true: + value.u.string = "list_assign"; + break; + default: + sudo_warnx("internal error: unexpected list op %d", def->op); + value.u.string = "unsupported"; + break; + } + sudo_json_add_value(jsonc, "operation", &value); + sudo_json_open_array(jsonc, def->var); + /* Split value into multiple space-separated words. */ + do { + /* Remove leading blanks, must have a non-empty string. */ + for (start = end; isblank((unsigned char)*start); start++) + continue; + if (*start == '\0') + break; + + /* Find the end and print it. */ + for (end = start; *end && !isblank((unsigned char)*end); end++) + continue; + savech = *end; + *end = '\0'; + value.type = JSON_STRING; + value.u.string = start; + sudo_json_add_value(jsonc, NULL, &value); + *end = savech; + } while (*end++ != '\0'); + sudo_json_close_array(jsonc); + sudo_json_close_object(jsonc); + + debug_return; +} + +static int +get_defaults_type(struct defaults *def) +{ + struct sudo_defs_types *cur; + + /* Look up def in table to find its type. */ + for (cur = sudo_defs_table; cur->name; cur++) { + if (strcmp(def->var, cur->name) == 0) + return cur->type; + } + return -1; +} + +/* + * Export all Defaults in JSON format. + */ +static void +print_defaults_json(struct json_container *jsonc, + const struct sudoers_parse_tree *parse_tree, bool expand_aliases) +{ + struct json_value value; + struct defaults *def, *next; + int type; + debug_decl(print_defaults_json, SUDOERS_DEBUG_UTIL); + + if (TAILQ_EMPTY(&parse_tree->defaults)) + debug_return; + + sudo_json_open_array(jsonc, "Defaults"); + + TAILQ_FOREACH_SAFE(def, &parse_tree->defaults, entries, next) { + type = get_defaults_type(def); + if (type == -1) { + log_warnx(U_("%s:%d:%d: unknown defaults entry \"%s\""), + def->file, def->line, def->column, def->var); + /* XXX - just pass it through as a string anyway? */ + continue; + } + + /* Found it, print object container and binding (if any). */ + sudo_json_open_object(jsonc, NULL); + print_binding_json(jsonc, parse_tree, def->binding, def->type, + expand_aliases); + + /* Validation checks. */ + /* XXX - validate values in addition to names? */ + + /* Print options, merging ones with the same binding. */ + sudo_json_open_array(jsonc, "Options"); + for (;;) { + next = TAILQ_NEXT(def, entries); + /* XXX - need to update cur too */ + if ((type & T_MASK) == T_FLAG || def->val == NULL) { + value.type = JSON_BOOL; + value.u.boolean = def->op; + sudo_json_add_value_as_object(jsonc, def->var, &value); + } else if ((type & T_MASK) == T_LIST) { + print_defaults_list_json(jsonc, def); + } else { + value.type = JSON_STRING; + value.u.string = def->val; + sudo_json_add_value_as_object(jsonc, def->var, &value); + } + if (next == NULL || def->binding != next->binding) + break; + def = next; + type = get_defaults_type(def); + if (type == -1) { + log_warnx(U_("%s:%d:%d: unknown defaults entry \"%s\""), + def->file, def->line, def->column, def->var); + /* XXX - just pass it through as a string anyway? */ + break; + } + } + sudo_json_close_array(jsonc); + sudo_json_close_object(jsonc); + } + + /* Close Defaults array; comma (if any) & newline will be printer later. */ + sudo_json_close_array(jsonc); + + debug_return; +} + +/* + * Export all aliases of the specified type in JSON format. + * Iterates through the entire aliases tree. + */ +static void +print_aliases_by_type_json(struct json_container *jsonc, + const struct sudoers_parse_tree *parse_tree, short alias_type, + const char *title) +{ + struct json_alias_closure closure; + debug_decl(print_aliases_by_type_json, SUDOERS_DEBUG_UTIL); + + /* print_alias_json() does not modify parse_tree. */ + closure.jsonc = jsonc; + closure.count = 0; + closure.alias_type = alias_type; + closure.title = title; + alias_apply((struct sudoers_parse_tree *)parse_tree, print_alias_json, + &closure); + if (closure.count != 0) { + sudo_json_close_array(jsonc); + sudo_json_close_object(jsonc); + } + + debug_return; +} + +/* + * Export all aliases in JSON format. + */ +static void +print_aliases_json(struct json_container *jsonc, + const struct sudoers_parse_tree *parse_tree) +{ + debug_decl(print_aliases_json, SUDOERS_DEBUG_UTIL); + + print_aliases_by_type_json(jsonc, parse_tree, USERALIAS, "User_Aliases"); + print_aliases_by_type_json(jsonc, parse_tree, RUNASALIAS, "Runas_Aliases"); + print_aliases_by_type_json(jsonc, parse_tree, HOSTALIAS, "Host_Aliases"); + print_aliases_by_type_json(jsonc, parse_tree, CMNDALIAS, "Command_Aliases"); + + debug_return; +} + +/* Does the next entry differ only in the command itself? */ +static bool +cmndspec_continues(struct cmndspec *cs, struct cmndspec *next) +{ + bool ret = next != NULL && + !RUNAS_CHANGED(cs, next) && !TAGS_CHANGED(cs->tags, next->tags) +#ifdef HAVE_PRIV_SET + && cs->privs == next->privs && cs->limitprivs == next->limitprivs +#endif /* HAVE_PRIV_SET */ +#ifdef HAVE_SELINUX + && cs->role == next->role && cs->type == next->type +#endif /* HAVE_SELINUX */ +#ifdef HAVE_APPARMOR + && cs->apparmor_profile == next->apparmor_profile +#endif /* HAVE_APPARMOR */ + && cs->runchroot == next->runchroot && cs->runcwd == next->runcwd; + return ret; +} + +/* + * Print a Cmnd_Spec in JSON format at the correct indent level. + * A pointer to the next Cmnd_Spec is passed in to make it possible to + * merge adjacent entries that are identical in all but the command. + */ +static void +print_cmndspec_json(struct json_container *jsonc, + const struct sudoers_parse_tree *parse_tree, struct cmndspec *cs, + struct cmndspec **nextp, struct defaults_list *options, bool expand_aliases) +{ + char timebuf[sizeof("20120727121554Z")]; + struct cmndspec *next = *nextp; + struct json_value value; + struct defaults *def; + struct member *m; + struct tm gmt; + size_t len; + debug_decl(print_cmndspec_json, SUDOERS_DEBUG_UTIL); + + /* Open Cmnd_Spec object. */ + sudo_json_open_object(jsonc, NULL); + + /* Print runasuserlist */ + if (cs->runasuserlist != NULL) { + sudo_json_open_array(jsonc, "runasusers"); + TAILQ_FOREACH(m, cs->runasuserlist, entries) { + print_member_json(jsonc, parse_tree, m, TYPE_RUNASUSER, + expand_aliases); + } + sudo_json_close_array(jsonc); + } + + /* Print runasgrouplist */ + if (cs->runasgrouplist != NULL) { + sudo_json_open_array(jsonc, "runasgroups"); + TAILQ_FOREACH(m, cs->runasgrouplist, entries) { + print_member_json(jsonc, parse_tree, m, TYPE_RUNASGROUP, + expand_aliases); + } + sudo_json_close_array(jsonc); + } + + /* Print options and tags */ + if (cs->timeout > 0 || cs->notbefore != UNSPEC || cs->notafter != UNSPEC || + cs->runchroot != NULL || cs->runcwd != NULL || TAGS_SET(cs->tags) || + !TAILQ_EMPTY(options)) { + struct cmndtag tag = cs->tags; + + sudo_json_open_array(jsonc, "Options"); + if (cs->runchroot != NULL) { + value.type = JSON_STRING; + value.u.string = cs->runchroot; + sudo_json_add_value(jsonc, "runchroot", &value); + } + if (cs->runcwd != NULL) { + value.type = JSON_STRING; + value.u.string = cs->runcwd; + sudo_json_add_value(jsonc, "runcwd", &value); + } + if (cs->timeout > 0) { + value.type = JSON_NUMBER; + value.u.number = cs->timeout; + sudo_json_add_value_as_object(jsonc, "command_timeout", &value); + } + if (cs->notbefore != UNSPEC) { + if (gmtime_r(&cs->notbefore, &gmt) == NULL) { + sudo_warn("%s", U_("unable to get GMT time")); + } else { + timebuf[sizeof(timebuf) - 1] = '\0'; + len = strftime(timebuf, sizeof(timebuf), "%Y%m%d%H%M%SZ", &gmt); + if (len == 0 || timebuf[sizeof(timebuf) - 1] != '\0') { + sudo_warnx("%s", U_("unable to format timestamp")); + } else { + value.type = JSON_STRING; + value.u.string = timebuf; + sudo_json_add_value_as_object(jsonc, "notbefore", &value); + } + } + } + if (cs->notafter != UNSPEC) { + if (gmtime_r(&cs->notafter, &gmt) == NULL) { + sudo_warn("%s", U_("unable to get GMT time")); + } else { + timebuf[sizeof(timebuf) - 1] = '\0'; + len = strftime(timebuf, sizeof(timebuf), "%Y%m%d%H%M%SZ", &gmt); + if (len == 0 || timebuf[sizeof(timebuf) - 1] != '\0') { + sudo_warnx("%s", U_("unable to format timestamp")); + } else { + value.type = JSON_STRING; + value.u.string = timebuf; + sudo_json_add_value_as_object(jsonc, "notafter", &value); + } + } + } + if (tag.nopasswd != UNSPEC) { + value.type = JSON_BOOL; + value.u.boolean = !tag.nopasswd; + sudo_json_add_value_as_object(jsonc, "authenticate", &value); + } + if (tag.noexec != UNSPEC) { + value.type = JSON_BOOL; + value.u.boolean = tag.noexec; + sudo_json_add_value_as_object(jsonc, "noexec", &value); + } + if (tag.intercept != UNSPEC) { + value.type = JSON_BOOL; + value.u.boolean = tag.intercept; + sudo_json_add_value_as_object(jsonc, "intercept", &value); + } + if (tag.send_mail != UNSPEC) { + value.type = JSON_BOOL; + value.u.boolean = tag.send_mail; + sudo_json_add_value_as_object(jsonc, "send_mail", &value); + } + if (tag.setenv != UNSPEC) { + value.type = JSON_BOOL; + value.u.boolean = tag.setenv; + sudo_json_add_value_as_object(jsonc, "setenv", &value); + } + if (tag.follow != UNSPEC) { + value.type = JSON_BOOL; + value.u.boolean = tag.follow; + sudo_json_add_value_as_object(jsonc, "sudoedit_follow", &value); + } + if (tag.log_input != UNSPEC) { + value.type = JSON_BOOL; + value.u.boolean = tag.log_input; + sudo_json_add_value_as_object(jsonc, "log_input", &value); + } + if (tag.log_output != UNSPEC) { + value.type = JSON_BOOL; + value.u.boolean = tag.log_output; + sudo_json_add_value_as_object(jsonc, "log_output", &value); + } + TAILQ_FOREACH(def, options, entries) { + int type = get_defaults_type(def); + if (type == -1) { + log_warnx(U_("%s:%d:%d: unknown defaults entry \"%s\""), + def->file, def->line, def->column, def->var); + /* XXX - just pass it through as a string anyway? */ + continue; + } + if ((type & T_MASK) == T_FLAG || def->val == NULL) { + value.type = JSON_BOOL; + value.u.boolean = def->op; + sudo_json_add_value_as_object(jsonc, def->var, &value); + } else if ((type & T_MASK) == T_LIST) { + print_defaults_list_json(jsonc, def); + } else { + value.type = JSON_STRING; + value.u.string = def->val; + sudo_json_add_value_as_object(jsonc, def->var, &value); + } + } + sudo_json_close_array(jsonc); + } + +#ifdef HAVE_SELINUX + /* Print SELinux role/type */ + if (cs->role != NULL && cs->type != NULL) { + sudo_json_open_array(jsonc, "SELinux_Spec"); + value.type = JSON_STRING; + value.u.string = cs->role; + sudo_json_add_value(jsonc, "role", &value); + value.u.string = cs->type; + sudo_json_add_value(jsonc, "type", &value); + sudo_json_close_array(jsonc); + } +#endif /* HAVE_SELINUX */ + +#ifdef HAVE_APPARMOR + if (cs->apparmor_profile != NULL) { + sudo_json_open_array(jsonc, "AppArmor_Spec"); + value.type = JSON_STRING; + value.u.string = cs->apparmor_profile; + sudo_json_add_value(jsonc, "apparmor_profile", &value); + sudo_json_close_array(jsonc); + } +#endif /* HAVE_APPARMOR */ + +#ifdef HAVE_PRIV_SET + /* Print Solaris privs/limitprivs */ + if (cs->privs != NULL || cs->limitprivs != NULL) { + sudo_json_open_array(jsonc, "Solaris_Priv_Spec"); + value.type = JSON_STRING; + if (cs->privs != NULL) { + value.u.string = cs->privs; + sudo_json_add_value(jsonc, "privs", &value); + } + if (cs->limitprivs != NULL) { + value.u.string = cs->limitprivs; + sudo_json_add_value(jsonc, "limitprivs", &value); + } + sudo_json_close_array(jsonc); + } +#endif /* HAVE_PRIV_SET */ + + /* + * Merge adjacent commands with matching tags, runas, SELinux + * role/type and Solaris priv settings. + */ + sudo_json_open_array(jsonc, "Commands"); + for (;;) { + print_member_json(jsonc, parse_tree, cs->cmnd, TYPE_COMMAND, + expand_aliases); + /* Does the next entry differ only in the command itself? */ + if (!cmndspec_continues(cs, next)) + break; + cs = next; + next = TAILQ_NEXT(cs, entries); + } + sudo_json_close_array(jsonc); + + /* Close Cmnd_Spec object. */ + sudo_json_close_object(jsonc); + + *nextp = next; + + debug_return; +} + +/* + * Print a User_Spec in JSON format at the correct indent level. + */ +static void +print_userspec_json(struct json_container *jsonc, + const struct sudoers_parse_tree *parse_tree, struct userspec *us, + bool expand_aliases) +{ + struct privilege *priv; + struct member *m; + struct cmndspec *cs, *next; + debug_decl(print_userspec_json, SUDOERS_DEBUG_UTIL); + + /* + * Each userspec struct may contain multiple privileges for + * a user. We export each privilege as a separate User_Spec + * object for simplicity's sake. + */ + TAILQ_FOREACH(priv, &us->privileges, entries) { + /* Open User_Spec object. */ + sudo_json_open_object(jsonc, NULL); + + /* Print users list. */ + sudo_json_open_array(jsonc, "User_List"); + TAILQ_FOREACH(m, &us->users, entries) { + print_member_json(jsonc, parse_tree, m, TYPE_USERNAME, + expand_aliases); + } + sudo_json_close_array(jsonc); + + /* Print hosts list. */ + sudo_json_open_array(jsonc, "Host_List"); + TAILQ_FOREACH(m, &priv->hostlist, entries) { + print_member_json(jsonc, parse_tree, m, TYPE_HOSTNAME, + expand_aliases); + } + sudo_json_close_array(jsonc); + + /* Print commands. */ + sudo_json_open_array(jsonc, "Cmnd_Specs"); + TAILQ_FOREACH_SAFE(cs, &priv->cmndlist, entries, next) { + print_cmndspec_json(jsonc, parse_tree, cs, &next, &priv->defaults, + expand_aliases); + } + sudo_json_close_array(jsonc); + + /* Close User_Spec object. */ + sudo_json_close_object(jsonc); + } + + debug_return; +} + +static void +print_userspecs_json(struct json_container *jsonc, + const struct sudoers_parse_tree *parse_tree, bool expand_aliases) +{ + struct userspec *us; + debug_decl(print_userspecs_json, SUDOERS_DEBUG_UTIL); + + if (TAILQ_EMPTY(&parse_tree->userspecs)) + debug_return; + + sudo_json_open_array(jsonc, "User_Specs"); + TAILQ_FOREACH(us, &parse_tree->userspecs, entries) { + print_userspec_json(jsonc, parse_tree, us, expand_aliases); + } + sudo_json_close_array(jsonc); + + debug_return; +} + +/* + * Export the parsed sudoers file in JSON format. + */ +bool +convert_sudoers_json(const struct sudoers_parse_tree *parse_tree, + const char *output_file, struct cvtsudoers_config *conf) +{ + struct json_container jsonc; + bool ret = true; + FILE *output_fp = stdout; + debug_decl(convert_sudoers_json, SUDOERS_DEBUG_UTIL); + + if (strcmp(output_file, "-") != 0) { + if ((output_fp = fopen(output_file, "w")) == NULL) + sudo_fatal(U_("unable to open %s"), output_file); + } + + /* 4 space indent, non-compact, exit on memory allocation failure. */ + sudo_json_init(&jsonc, 4, false, true, false); + + /* Dump Defaults in JSON format. */ + if (!ISSET(conf->suppress, SUPPRESS_DEFAULTS)) { + print_defaults_json(&jsonc, parse_tree, conf->expand_aliases); + } + + /* Dump Aliases in JSON format. */ + if (!conf->expand_aliases && !ISSET(conf->suppress, SUPPRESS_ALIASES)) { + print_aliases_json(&jsonc, parse_tree); + } + + /* Dump User_Specs in JSON format. */ + if (!ISSET(conf->suppress, SUPPRESS_PRIVS)) { + print_userspecs_json(&jsonc, parse_tree, conf->expand_aliases); + } + + /* Write JSON output. */ + if (sudo_json_get_len(&jsonc) != 0) { + putc('{', output_fp); + fputs(sudo_json_get_buf(&jsonc), output_fp); + fputs("\n}\n", output_fp); + (void)fflush(output_fp); + if (ferror(output_fp)) + ret = false; + } + sudo_json_free(&jsonc); + if (output_fp != stdout) + fclose(output_fp); + + debug_return_bool(ret); +} |