radict.c

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/*
 *   This program is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation; either version 2 of the License, or
 *   (at your option) any later version.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program; if not, write to the Free Software
 *   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
 */
 
/**
 * $Id: 0934122f6e55427387b7637585df9e33b1c5fafe $
 *
 * @file radict.c
 * @brief Utility to print attribute data in tab delimited format
 *
 * @copyright 2017 The FreeRADIUS server project
 * @copyright 2017 Arran Cudbard-Bell (a.cudbardb@freeradius.org)
 */
RCSID("$Id: 0934122f6e55427387b7637585df9e33b1c5fafe $")
 
#include <freeradius-devel/util/conf.h>
#include <freeradius-devel/util/syserror.h>
#include <freeradius-devel/util/atexit.h>
#include <freeradius-devel/util/dict_priv.h>
#include <dirent.h>
#include <sys/stat.h>
#include <stdbool.h>
 
#ifdef HAVE_GETOPT_H
#  include <getopt.h>
#endif
 
typedef enum {
        RADICT_OUT_FANCY = 1,
        RADICT_OUT_CSV
} radict_out_t;
 
static fr_dict_t *dicts[255];
static bool print_values = false;
static bool print_headers = false;
static radict_out_t output_format = RADICT_OUT_FANCY;
static fr_dict_t **dict_end = dicts;
 
DIAG_OFF(unused-macros)
#define DEBUG2(fmt, ...)        if (fr_log_fp && (fr_debug_lvl > 2)) fprintf(fr_log_fp , fmt "\n", ## __VA_ARGS__)
#define DEBUG(fmt, ...)         if (fr_log_fp && (fr_debug_lvl > 1)) fprintf(fr_log_fp , fmt "\n", ## __VA_ARGS__)
#define INFO(fmt, ...)          if (fr_log_fp && (fr_debug_lvl > 0)) fprintf(fr_log_fp , fmt "\n", ## __VA_ARGS__)
DIAG_ON(unused-macros)
 
static void usage(void)
{
        fprintf(stderr, "usage: radict [OPTS] <attribute> [attribute...]\n");
        fprintf(stderr, "  -E               Export dictionary definitions.\n");
        fprintf(stderr, "  -V               Write out all attribute values.\n");
        fprintf(stderr, "  -D <dictdir>     Set main dictionary directory (defaults to " DICTDIR ").\n");
        fprintf(stderr, "  -p <protocol>    Set protocol by name\n");
        fprintf(stderr, "  -x               Debugging mode.\n");
        fprintf(stderr, "  -c               Print out in CSV format.\n");
        fprintf(stderr, "  -H               Show the headers of each field.\n");
        fprintf(stderr, "\n");
        fprintf(stderr, "Very simple interface to extract attribute definitions from FreeRADIUS dictionaries\n");
}
 
static int load_dicts(char const *dict_dir, char const *protocol)
{
        DIR             *dir;
        struct dirent   *dp;
 
        INFO("Reading directory %s", dict_dir);
 
        dir = opendir(dict_dir);
        if (!dir) {
                fr_strerror_printf("Failed opening \"%s\": %s", dict_dir, fr_syserror(errno));
                return -1;
        }
 
        while ((dp = readdir(dir)) != NULL) {
                struct stat stat_buff;
                char *file_str;
 
                if (dp->d_name[0] == '.') continue;
 
                /*
                 *      We only want to load one...
                 */
                if (protocol && (strcmp(dp->d_name, protocol) != 0)) continue;
 
                /*
                 *      Skip the internal FreeRADIUS dictionary.
                 */
                if (strcmp(dp->d_name, "freeradius") == 0) continue;
 
                file_str = talloc_asprintf(NULL, "%s/%s", dict_dir, dp->d_name);
 
                if (stat(file_str, &stat_buff) == -1) {
                        fr_strerror_printf("Failed stating file \"%s\": %s", file_str, fr_syserror(errno));
                error:
                        closedir(dir);
                        talloc_free(file_str);
                        return -1;
                }
 
                /*
                 *      Only process directories
                 */
                if ((stat_buff.st_mode & S_IFMT) == S_IFDIR) {
                        char            *dict_file;
                        struct stat     dict_stat_buff;
                        int ret;
 
                        dict_file = talloc_asprintf(NULL, "%s/dictionary", file_str);
                        ret = stat(dict_file, &dict_stat_buff);
                        talloc_free(dict_file);
 
                        /*
                         *      If the directory contains a dictionary file,
                         *      load it as a dictionary.
                         */
                        if (ret == 0) {
                                if (dict_end >= (dicts + (NUM_ELEMENTS(dicts)))) {
                                        fr_strerror_const("Reached maximum number of dictionaries");
                                        goto error;
                                }
 
                                INFO("Loading dictionary: %s/dictionary", file_str);
                                if (fr_dict_protocol_afrom_file(dict_end, dp->d_name, NULL, __FILE__) < 0) {
                                        goto error;
                                }
                                dict_end++;
                        }
 
                        /*
                         *      For now, don't do sub-protocols.
                         */
                }
                talloc_free(file_str);
        }
        closedir(dir);
 
        return 0;
}
 
static void da_print_info_td(fr_dict_t const *dict, fr_dict_attr_t const *da)
{
        char                    oid_str[512];
        char                    flags[256];
        fr_hash_iter_t          iter;
        fr_dict_enum_value_t            *enumv;
        fr_sbuff_t              old_str_sbuff = FR_SBUFF_OUT(oid_str, sizeof(oid_str));
        fr_sbuff_t              flags_sbuff = FR_SBUFF_OUT(flags, sizeof(flags));
 
        if (fr_dict_attr_oid_print(&old_str_sbuff, NULL, da, false) <= 0) {
                fr_strerror_printf("OID string too long");
                fr_exit(EXIT_FAILURE);
        }
 
        fr_dict_attr_flags_print(&flags_sbuff, dict, da->type, &da->flags);
 
        /* Protocol Name Type */
 
        switch(output_format) {
                case RADICT_OUT_CSV:
                        printf("%s,%s,%s,%d,%s,%s\n",
                               fr_dict_root(dict)->name,
                               fr_sbuff_start(&old_str_sbuff),
                               da->name,
                               da->attr,
                               fr_type_to_str(da->type),
                               fr_sbuff_start(&flags_sbuff));
                        break;
 
                case RADICT_OUT_FANCY:
                default:
                        printf("%s\t%s\t%s\t%d\t%s\t%s\n",
                               fr_dict_root(dict)->name,
                               fr_sbuff_start(&old_str_sbuff),
                               da->name,
                               da->attr,
                               fr_type_to_str(da->type),
                               fr_sbuff_start(&flags_sbuff));
        }
 
        if (print_values) {
                fr_dict_attr_ext_enumv_t        *ext;
 
                ext = fr_dict_attr_ext(da, FR_DICT_ATTR_EXT_ENUMV);
                if (!ext || !ext->value_by_name) return;
 
                for (enumv = fr_hash_table_iter_init(ext->value_by_name, &iter);
                     enumv;
                     enumv = fr_hash_table_iter_next(ext->value_by_name, &iter)) {
                        char *str;
 
 
                        switch(output_format) {
                                case RADICT_OUT_CSV:
                                        str = fr_asprintf(NULL, "%s,%s,%s,%d,%s,%s,%s,%pV",
                                                                fr_dict_root(dict)->name,
                                                                fr_sbuff_start(&old_str_sbuff),
                                                                da->name,
                                                                da->attr,
                                                                fr_type_to_str(da->type),
                                                                fr_sbuff_start(&flags_sbuff),
                                                                enumv->name,
                                                                enumv->value);
                                        break;
 
                                case RADICT_OUT_FANCY:
                                default:
                                        str = fr_asprintf(NULL, "%s\t%s\t%s\t%d\t%s\t%s\t%s\t%pV",
                                                                fr_dict_root(dict)->name,
                                                                fr_sbuff_start(&old_str_sbuff),
                                                                da->name,
                                                                da->attr,
                                                                fr_type_to_str(da->type),
                                                                fr_sbuff_start(&flags_sbuff),
                                                                enumv->name,
                                                                enumv->value);
                        }
 
                        printf("%s\n", str);
                        talloc_free(str);
                }
        }
}
 
static void _raddict_export(fr_dict_t const *dict, uint64_t *count, uintptr_t *low, uintptr_t *high, fr_dict_attr_t const *da, unsigned int lvl)
{
        unsigned int            i;
        size_t                  len;
        fr_dict_attr_t const    *p;
        char                    flags[256];
        fr_dict_attr_t const    **children;
 
        fr_dict_attr_flags_print(&FR_SBUFF_OUT(flags, sizeof(flags)), dict, da->type, &da->flags);
 
        /*
         *      Root attributes are allocated outside of the pool
         *      so it's not helpful to include them in the calculation.
         */
        if (!da->flags.is_root) {
                if (low && ((uintptr_t)da < *low)) {
                        *low = (uintptr_t)da;
                }
                if (high && ((uintptr_t)da > *high)) {
                        *high = (uintptr_t)da;
                }
 
                da_print_info_td(fr_dict_by_da(da), da);
        }
 
        if (count) (*count)++;
 
        /*
         *      Todo - Should be fixed to use attribute walking API
         */
        children = dict_attr_children(da);
        if (children) {
                len = talloc_array_length(children);
                for (i = 0; i < len; i++) {
                        for (p = children[i]; p; p = p->next) {
                                _raddict_export(dict, count, low, high, p, lvl + 1);
                        }
                }
        }
}
 
static void raddict_export(uint64_t *count, uintptr_t *low, uintptr_t *high, fr_dict_t *dict)
{
        if (count) *count = 0;
        if (low) *low = UINTPTR_MAX;
        if (high) *high = 0;
 
        _raddict_export(dict, count, low, high, fr_dict_root(dict), 0);
}
 
/**
 *
 * @hidecallgraph
 */
int main(int argc, char *argv[])
{
        char const              *dict_dir = DICTDIR;
        char                    c;
        int                     ret = 0;
        bool                    found = false;
        bool                    export = false;
        bool                    file_export = false;
        char const              *protocol = NULL;
 
        TALLOC_CTX              *autofree;
 
        /*
         *      Must be called first, so the handler is called last
         */
        fr_atexit_global_setup();
 
        autofree = talloc_autofree_context();
 
#ifndef NDEBUG
        if (fr_fault_setup(autofree, getenv("PANIC_ACTION"), argv[0]) < 0) {
                fr_perror("radict - Fault setup");
                fr_exit(EXIT_FAILURE);
        }
#endif
 
        talloc_set_log_stderr();
 
        fr_debug_lvl = 1;
 
        while ((c = getopt(argc, argv, "cfED:p:VxhH")) != -1) switch (c) {
                case 'c':
                        output_format = RADICT_OUT_CSV;
                        break;
 
                case 'H':
                        print_headers = true;
                        break;
 
                case 'f':
                        file_export = true;
                        break;
 
                case 'E':
                        export = true;
                        break;
 
                case 'D':
                        dict_dir = optarg;
                        break;
 
                case 'p':
                        protocol = optarg;
                        break;
 
                case 'V':
                        print_values = true;
                        break;
 
                case 'x':
                        fr_log_fp = stdout;
                        fr_debug_lvl++;
                        break;
 
                case 'h':
                default:
                        usage();
                        found = true;
                        goto finish;
        }
        argc -= optind;
        argv += optind;
 
        /*
         *      Mismatch between the binary and the libraries it depends on
         */
        if (fr_check_lib_magic(RADIUSD_MAGIC_NUMBER) < 0) {
                fr_perror("radict - library mismatch");
                ret = 1;
                goto finish;
        }
 
        if (!fr_dict_global_ctx_init(NULL, true, dict_dir)) {
                fr_perror("radict - Global context init failed");
                ret = 1;
                goto finish;
        }
 
        INFO("Loading dictionary: %s/%s", dict_dir, FR_DICTIONARY_FILE);
 
        if (fr_dict_internal_afrom_file(dict_end++, FR_DICTIONARY_INTERNAL_DIR, __FILE__) < 0) {
                fr_perror("radict - Loading internal dictionary failed");
                ret = 1;
                goto finish;
        }
        /*
         *      Don't emit spurious errors...
         */
        fr_strerror_clear();
        if (load_dicts(dict_dir, protocol) < 0) {
                fr_perror("radict - Loading dictionaries failed");
                ret = 1;
                goto finish;
        }
 
        if (dict_end == dicts) {
                fr_perror("radict - No dictionaries loaded");
                ret = 1;
                goto finish;
        }
 
        if (print_headers) switch(output_format) {
                case RADICT_OUT_CSV:
                        printf("Dictionary,OID,Attribute,ID,Type,Flags\n");
                        break;
 
                case RADICT_OUT_FANCY:
                default:
                        printf("Dictionary\tOID\tAttribute\tID\tType\tFlags\n");
        }
 
        if (file_export) {
                fr_dict_t       **dict_p = dicts;
 
                do {
                        if (protocol && (strcasecmp(fr_dict_root(*dict_p)->name, protocol) == 0)) {
                                fr_dict_export(*dict_p);
                        }
                } while (++dict_p < dict_end);
        }
 
        if (export) {
                fr_dict_t       **dict_p = dicts;
 
                do {
                        uint64_t        count;
                        uintptr_t       high;
                        uintptr_t       low;
 
                        raddict_export(&count, &low, &high, *dict_p);
                        DEBUG2("Attribute count %" PRIu64, count);
                        DEBUG2("Memory allocd %zu (bytes)", talloc_total_size(*dict_p));
                        DEBUG2("Memory spread %zu (bytes)", (size_t) (high - low));
                } while (++dict_p < dict_end);
        }
 
        while (argc-- > 0) {
                char                    *attr;
                fr_dict_attr_t const    *da;
                fr_dict_t               **dict_p = dicts;
 
                attr = *argv++;
 
 
                /*
                 *      Loop through all the dicts.  An attribute may
                 *      exist in multiple dictionaries.
                 */
                do {
                        DEBUG2("Looking for \"%s\" in dict \"%s\"", attr, fr_dict_root(*dict_p)->name);
 
                        da = fr_dict_attr_by_oid(NULL, fr_dict_root(*dict_p), attr);
                        if (da) {
                                da_print_info_td(*dict_p, da);
                                found = true;
                        }
                } while (++dict_p < dict_end);
        }
 
finish:
        /*
         *      Release our references on all the dicts
         *      we loaded.
         */
        {
                fr_dict_t       **dict_p = dicts;
 
                do {
                        fr_dict_free(dict_p, __FILE__);
                } while (++dict_p < dict_end);
        }
        if (talloc_free(autofree) < 0) fr_perror("radict - Error freeing dictionaries");
 
        /*
         *      Ensure our atexit handlers run before any other
         *      atexit handlers registered by third party libraries.
         */
        fr_atexit_global_trigger_all();
 
        return found ? ret : 64;
}