[thirdparty/openssl.git] / apps / srp.c

/*
 * Copyright 2004-2018 The OpenSSL Project Authors. All Rights Reserved.
 *
 * Licensed under the OpenSSL license (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
 */

#include <openssl/opensslconf.h>
#ifdef OPENSSL_NO_SRP
NON_EMPTY_TRANSLATION_UNIT
#else

# include <stdio.h>
# include <stdlib.h>
# include <string.h>
# include <openssl/conf.h>
# include <openssl/bio.h>
# include <openssl/err.h>
# include <openssl/txt_db.h>
# include <openssl/buffer.h>
# include <openssl/srp.h>
# include "apps.h"
# include "progs.h"

# define BASE_SECTION    "srp"
# define CONFIG_FILE "openssl.cnf"


# define ENV_DATABASE            "srpvfile"
# define ENV_DEFAULT_SRP         "default_srp"

static int get_index(CA_DB *db, char *id, char type)
{
    char **pp;
    int i;
    if (id == NULL)
        return -1;
    if (type == DB_SRP_INDEX) {
        for (i = 0; i < sk_OPENSSL_PSTRING_num(db->db->data); i++) {
            pp = sk_OPENSSL_PSTRING_value(db->db->data, i);
            if (pp[DB_srptype][0] == DB_SRP_INDEX
                && strcmp(id, pp[DB_srpid]) == 0)
                return i;
        }
    } else {
        for (i = 0; i < sk_OPENSSL_PSTRING_num(db->db->data); i++) {
            pp = sk_OPENSSL_PSTRING_value(db->db->data, i);

            if (pp[DB_srptype][0] != DB_SRP_INDEX
                && strcmp(id, pp[DB_srpid]) == 0)
                return i;
        }
    }

    return -1;
}

static void print_entry(CA_DB *db, int indx, int verbose, char *s)
{
    if (indx >= 0 && verbose) {
        int j;
        char **pp = sk_OPENSSL_PSTRING_value(db->db->data, indx);
        BIO_printf(bio_err, "%s \"%s\"\n", s, pp[DB_srpid]);
        for (j = 0; j < DB_NUMBER; j++) {
            BIO_printf(bio_err, "  %d = \"%s\"\n", j, pp[j]);
        }
    }
}

static void print_index(CA_DB *db, int indexindex, int verbose)
{
    print_entry(db, indexindex, verbose, "g N entry");
}

static void print_user(CA_DB *db, int userindex, int verbose)
{
    if (verbose > 0) {
        char **pp = sk_OPENSSL_PSTRING_value(db->db->data, userindex);

        if (pp[DB_srptype][0] != 'I') {
            print_entry(db, userindex, verbose, "User entry");
            print_entry(db, get_index(db, pp[DB_srpgN], 'I'), verbose,
                        "g N entry");
        }

    }
}

static int update_index(CA_DB *db, char **row)
{
    char **irow;
    int i;

    irow = app_malloc(sizeof(*irow) * (DB_NUMBER + 1), "row pointers");
    for (i = 0; i < DB_NUMBER; i++)
        irow[i] = row[i];
    irow[DB_NUMBER] = NULL;

    if (!TXT_DB_insert(db->db, irow)) {
        BIO_printf(bio_err, "failed to update srpvfile\n");
        BIO_printf(bio_err, "TXT_DB error number %ld\n", db->db->error);
        OPENSSL_free(irow);
        return 0;
    }
    return 1;
}

static char *lookup_conf(const CONF *conf, const char *section, const char *tag)
{
    char *entry = NCONF_get_string(conf, section, tag);
    if (entry == NULL)
        BIO_printf(bio_err, "variable lookup failed for %s::%s\n", section, tag);
    return entry;
}

static char *srp_verify_user(const char *user, const char *srp_verifier,
                             char *srp_usersalt, const char *g, const char *N,
                             const char *passin, int verbose)
{
    char password[1025];
    PW_CB_DATA cb_tmp;
    char *verifier = NULL;
    char *gNid = NULL;
    int len;

    cb_tmp.prompt_info = user;
    cb_tmp.password = passin;

    len = password_callback(password, sizeof(password)-1, 0, &cb_tmp);
    if (len > 0) {
        password[len] = 0;
        if (verbose)
            BIO_printf(bio_err,
                       "Validating\n   user=\"%s\"\n srp_verifier=\"%s\"\n srp_usersalt=\"%s\"\n g=\"%s\"\n N=\"%s\"\n",
                       user, srp_verifier, srp_usersalt, g, N);
        if (verbose > 1)
            BIO_printf(bio_err, "Pass %s\n", password);

        OPENSSL_assert(srp_usersalt != NULL);
        if ((gNid = SRP_create_verifier(user, password, &srp_usersalt,
                                        &verifier, N, g)) == NULL) {
            BIO_printf(bio_err, "Internal error validating SRP verifier\n");
        } else {
            if (strcmp(verifier, srp_verifier))
                gNid = NULL;
            OPENSSL_free(verifier);
        }
        OPENSSL_cleanse(password, len);
    }
    return gNid;
}

static char *srp_create_user(char *user, char **srp_verifier,
                             char **srp_usersalt, char *g, char *N,
                             char *passout, int verbose)
{
    char password[1025];
    PW_CB_DATA cb_tmp;
    char *gNid = NULL;
    char *salt = NULL;
    int len;
    cb_tmp.prompt_info = user;
    cb_tmp.password = passout;

    len = password_callback(password, sizeof(password)-1, 1, &cb_tmp);
    if (len > 0) {
        password[len] = 0;
        if (verbose)
            BIO_printf(bio_err, "Creating\n user=\"%s\"\n g=\"%s\"\n N=\"%s\"\n",
                       user, g, N);
        if ((gNid = SRP_create_verifier(user, password, &salt,
                                        srp_verifier, N, g)) == NULL) {
            BIO_printf(bio_err, "Internal error creating SRP verifier\n");
        } else {
            *srp_usersalt = salt;
        }
        OPENSSL_cleanse(password, len);
        if (verbose > 1)
            BIO_printf(bio_err, "gNid=%s salt =\"%s\"\n verifier =\"%s\"\n",
                       gNid, salt, *srp_verifier);

    }
    return gNid;
}

typedef enum OPTION_choice {
    OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
    OPT_VERBOSE, OPT_CONFIG, OPT_NAME, OPT_SRPVFILE, OPT_ADD,
    OPT_DELETE, OPT_MODIFY, OPT_LIST, OPT_GN, OPT_USERINFO,
    OPT_PASSIN, OPT_PASSOUT, OPT_ENGINE, OPT_R_ENUM
} OPTION_CHOICE;

const OPTIONS srp_options[] = {
    {"help", OPT_HELP, '-', "Display this summary"},
    {"verbose", OPT_VERBOSE, '-', "Talk a lot while doing things"},
    {"config", OPT_CONFIG, '<', "A config file"},
    {"name", OPT_NAME, 's', "The particular srp definition to use"},
    {"srpvfile", OPT_SRPVFILE, '<', "The srp verifier file name"},
    {"add", OPT_ADD, '-', "Add a user and srp verifier"},
    {"modify", OPT_MODIFY, '-',
     "Modify the srp verifier of an existing user"},
    {"delete", OPT_DELETE, '-', "Delete user from verifier file"},
    {"list", OPT_LIST, '-', "List users"},
    {"gn", OPT_GN, 's', "Set g and N values to be used for new verifier"},
    {"userinfo", OPT_USERINFO, 's', "Additional info to be set for user"},
    {"passin", OPT_PASSIN, 's', "Input file pass phrase source"},
    {"passout", OPT_PASSOUT, 's', "Output file pass phrase source"},
    OPT_R_OPTIONS,
# ifndef OPENSSL_NO_ENGINE
    {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
# endif
    {NULL}
};

int srp_main(int argc, char **argv)
{
    ENGINE *e = NULL;
    CA_DB *db = NULL;
    CONF *conf = NULL;
    int gNindex = -1, maxgN = -1, ret = 1, errors = 0, verbose = 0, i;
    int doupdatedb = 0, mode = OPT_ERR;
    char *user = NULL, *passinarg = NULL, *passoutarg = NULL;
    char *passin = NULL, *passout = NULL, *gN = NULL, *userinfo = NULL;
    char *section = NULL;
    char **gNrow = NULL, *configfile = NULL;
    char *srpvfile = NULL, **pp, *prog;
    OPTION_CHOICE o;

    prog = opt_init(argc, argv, srp_options);
    while ((o = opt_next()) != OPT_EOF) {
        switch (o) {
        case OPT_EOF:
        case OPT_ERR:
 opthelp:
            BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
            goto end;
        case OPT_HELP:
            opt_help(srp_options);
            ret = 0;
            goto end;
        case OPT_VERBOSE:
            verbose++;
            break;
        case OPT_CONFIG:
            configfile = opt_arg();
            break;
        case OPT_NAME:
            section = opt_arg();
            break;
        case OPT_SRPVFILE:
            srpvfile = opt_arg();
            break;
        case OPT_ADD:
        case OPT_DELETE:
        case OPT_MODIFY:
        case OPT_LIST:
            if (mode != OPT_ERR) {
                BIO_printf(bio_err,
                           "%s: Only one of -add/-delete/-modify/-list\n",
                           prog);
                goto opthelp;
            }
            mode = o;
            break;
        case OPT_GN:
            gN = opt_arg();
            break;
        case OPT_USERINFO:
            userinfo = opt_arg();
            break;
        case OPT_PASSIN:
            passinarg = opt_arg();
            break;
        case OPT_PASSOUT:
            passoutarg = opt_arg();
            break;
        case OPT_ENGINE:
            e = setup_engine(opt_arg(), 0);
            break;
        case OPT_R_CASES:
            if (!opt_rand(o))
                goto end;
            break;
        }
    }
    argc = opt_num_rest();
    argv = opt_rest();

    if (srpvfile != NULL && configfile != NULL) {
        BIO_printf(bio_err,
                   "-srpvfile and -configfile cannot be specified together.\n");
        goto end;
    }
    if (mode == OPT_ERR) {
        BIO_printf(bio_err,
                   "Exactly one of the options -add, -delete, -modify -list must be specified.\n");
        goto opthelp;
    }
    if (mode == OPT_DELETE || mode == OPT_MODIFY || mode == OPT_ADD) {
        if (argc == 0) {
            BIO_printf(bio_err, "Need at least one user.\n");
            goto opthelp;
        }
        user = *argv++;
    }
    if ((passinarg != NULL || passoutarg != NULL) && argc != 1) {
        BIO_printf(bio_err,
                   "-passin, -passout arguments only valid with one user.\n");
        goto opthelp;
    }

    if (!app_passwd(passinarg, passoutarg, &passin, &passout)) {
        BIO_printf(bio_err, "Error getting passwords\n");
        goto end;
    }

    if (srpvfile == NULL) {
        if (configfile == NULL)
            configfile = default_config_file;

        if (verbose)
            BIO_printf(bio_err, "Using configuration from %s\n",
                       configfile);
        conf = app_load_config(configfile);
        if (conf == NULL)
            goto end;
        if (configfile != default_config_file && !app_load_modules(conf))
            goto end;

        /* Lets get the config section we are using */
        if (section == NULL) {
            if (verbose)
                BIO_printf(bio_err,
                           "trying to read " ENV_DEFAULT_SRP
                           " in " BASE_SECTION "\n");

            section = lookup_conf(conf, BASE_SECTION, ENV_DEFAULT_SRP);
            if (section == NULL)
                goto end;
        }

        app_RAND_load_conf(conf, BASE_SECTION);

        if (verbose)
            BIO_printf(bio_err,
                       "trying to read " ENV_DATABASE " in section \"%s\"\n",
                       section);

        srpvfile = lookup_conf(conf, section, ENV_DATABASE);
        if (srpvfile == NULL)
            goto end;
    }

    if (verbose)
        BIO_printf(bio_err, "Trying to read SRP verifier file \"%s\"\n",
                   srpvfile);

    db = load_index(srpvfile, NULL);
    if (db == NULL)
        goto end;

    /* Lets check some fields */
    for (i = 0; i < sk_OPENSSL_PSTRING_num(db->db->data); i++) {
        pp = sk_OPENSSL_PSTRING_value(db->db->data, i);

        if (pp[DB_srptype][0] == DB_SRP_INDEX) {
            maxgN = i;
            if ((gNindex < 0) && (gN != NULL) && strcmp(gN, pp[DB_srpid]) == 0)
                gNindex = i;

            print_index(db, i, verbose > 1);
        }
    }

    if (verbose)
        BIO_printf(bio_err, "Database initialised\n");

    if (gNindex >= 0) {
        gNrow = sk_OPENSSL_PSTRING_value(db->db->data, gNindex);
        print_entry(db, gNindex, verbose > 1, "Default g and N");
    } else if (maxgN > 0 && !SRP_get_default_gN(gN)) {
        BIO_printf(bio_err, "No g and N value for index \"%s\"\n", gN);
        goto end;
    } else {
        if (verbose)
            BIO_printf(bio_err, "Database has no g N information.\n");
        gNrow = NULL;
    }

    if (verbose > 1)
        BIO_printf(bio_err, "Starting user processing\n");

    while (mode == OPT_LIST || user != NULL) {
        int userindex = -1;

        if (user != NULL && verbose > 1)
            BIO_printf(bio_err, "Processing user \"%s\"\n", user);
        if ((userindex = get_index(db, user, 'U')) >= 0)
            print_user(db, userindex, (verbose > 0) || mode == OPT_LIST);

        if (mode == OPT_LIST) {
            if (user == NULL) {
                BIO_printf(bio_err, "List all users\n");

                for (i = 0; i < sk_OPENSSL_PSTRING_num(db->db->data); i++)
                    print_user(db, i, 1);
            } else if (userindex < 0) {
                BIO_printf(bio_err,
                           "user \"%s\" does not exist, ignored. t\n", user);
                errors++;
            }
        } else if (mode == OPT_ADD) {
            if (userindex >= 0) {
                /* reactivation of a new user */
                char **row =
                    sk_OPENSSL_PSTRING_value(db->db->data, userindex);
                BIO_printf(bio_err, "user \"%s\" reactivated.\n", user);
                row[DB_srptype][0] = 'V';

                doupdatedb = 1;
            } else {
                char *row[DB_NUMBER];
                char *gNid;
                row[DB_srpverifier] = NULL;
                row[DB_srpsalt] = NULL;
                row[DB_srpinfo] = NULL;
                if (!
                    (gNid =
                     srp_create_user(user, &(row[DB_srpverifier]),
                                     &(row[DB_srpsalt]),
                                     gNrow ? gNrow[DB_srpsalt] : gN,
                                     gNrow ? gNrow[DB_srpverifier] : NULL,
                                     passout, verbose))) {
                    BIO_printf(bio_err,
                               "Cannot create srp verifier for user \"%s\", operation abandoned .\n",
                               user);
                    errors++;
                    goto end;
                }
                row[DB_srpid] = OPENSSL_strdup(user);
                row[DB_srptype] = OPENSSL_strdup("v");
                row[DB_srpgN] = OPENSSL_strdup(gNid);

                if ((row[DB_srpid] == NULL)
                    || (row[DB_srpgN] == NULL)
                    || (row[DB_srptype] == NULL)
                    || (row[DB_srpverifier] == NULL)
                    || (row[DB_srpsalt] == NULL)
                    || (userinfo
                        && ((row[DB_srpinfo] = OPENSSL_strdup(userinfo)) == NULL))
                    || !update_index(db, row)) {
                    OPENSSL_free(row[DB_srpid]);
                    OPENSSL_free(row[DB_srpgN]);
                    OPENSSL_free(row[DB_srpinfo]);
                    OPENSSL_free(row[DB_srptype]);
                    OPENSSL_free(row[DB_srpverifier]);
                    OPENSSL_free(row[DB_srpsalt]);
                    goto end;
                }
                doupdatedb = 1;
            }
        } else if (mode == OPT_MODIFY) {
            if (userindex < 0) {
                BIO_printf(bio_err,
                           "user \"%s\" does not exist, operation ignored.\n",
                           user);
                errors++;
            } else {

                char **row =
                    sk_OPENSSL_PSTRING_value(db->db->data, userindex);
                char type = row[DB_srptype][0];
                if (type == 'v') {
                    BIO_printf(bio_err,
                               "user \"%s\" already updated, operation ignored.\n",
                               user);
                    errors++;
                } else {
                    char *gNid;

                    if (row[DB_srptype][0] == 'V') {
                        int user_gN;
                        char **irow = NULL;
                        if (verbose)
                            BIO_printf(bio_err,
                                       "Verifying password for user \"%s\"\n",
                                       user);
                        if ((user_gN =
                             get_index(db, row[DB_srpgN], DB_SRP_INDEX)) >= 0)
                            irow =
                                sk_OPENSSL_PSTRING_value(db->db->data,
                                                         userindex);

                        if (!srp_verify_user
                            (user, row[DB_srpverifier], row[DB_srpsalt],
                             irow ? irow[DB_srpsalt] : row[DB_srpgN],
                             irow ? irow[DB_srpverifier] : NULL, passin,
                             verbose)) {
                            BIO_printf(bio_err,
                                       "Invalid password for user \"%s\", operation abandoned.\n",
                                       user);
                            errors++;
                            goto end;
                        }
                    }
                    if (verbose)
                        BIO_printf(bio_err, "Password for user \"%s\" ok.\n",
                                   user);

                    if (!
                        (gNid =
                         srp_create_user(user, &(row[DB_srpverifier]),
                                         &(row[DB_srpsalt]),
                                         gNrow ? gNrow[DB_srpsalt] : NULL,
                                         gNrow ? gNrow[DB_srpverifier] : NULL,
                                         passout, verbose))) {
                        BIO_printf(bio_err,
                                   "Cannot create srp verifier for user \"%s\", operation abandoned.\n",
                                   user);
                        errors++;
                        goto end;
                    }

                    row[DB_srptype][0] = 'v';
                    row[DB_srpgN] = OPENSSL_strdup(gNid);

                    if (row[DB_srpid] == NULL
                        || row[DB_srpgN] == NULL
                        || row[DB_srptype] == NULL
                        || row[DB_srpverifier] == NULL
                        || row[DB_srpsalt] == NULL
                        || (userinfo
                            && ((row[DB_srpinfo] = OPENSSL_strdup(userinfo))
                                == NULL)))
                        goto end;

                    doupdatedb = 1;
                }
            }
        } else if (mode == OPT_DELETE) {
            if (userindex < 0) {
                BIO_printf(bio_err,
                           "user \"%s\" does not exist, operation ignored. t\n",
                           user);
                errors++;
            } else {
                char **xpp = sk_OPENSSL_PSTRING_value(db->db->data, userindex);

                BIO_printf(bio_err, "user \"%s\" revoked. t\n", user);
                xpp[DB_srptype][0] = 'R';
                doupdatedb = 1;
            }
        }
        user = *argv++;
        if (user == NULL) {
            /* no more processing in any mode if no users left */
            break;
        }
    }

    if (verbose)
        BIO_printf(bio_err, "User procession done.\n");

    if (doupdatedb) {
        /* Lets check some fields */
        for (i = 0; i < sk_OPENSSL_PSTRING_num(db->db->data); i++) {
            pp = sk_OPENSSL_PSTRING_value(db->db->data, i);

            if (pp[DB_srptype][0] == 'v') {
                pp[DB_srptype][0] = 'V';
                print_user(db, i, verbose);
            }
        }

        if (verbose)
            BIO_printf(bio_err, "Trying to update srpvfile.\n");
        if (!save_index(srpvfile, "new", db))
            goto end;

        if (verbose)
            BIO_printf(bio_err, "Temporary srpvfile created.\n");
        if (!rotate_index(srpvfile, "new", "old"))
            goto end;

        if (verbose)
            BIO_printf(bio_err, "srpvfile updated.\n");
    }

    ret = (errors != 0);
 end:
    if (errors != 0)
        if (verbose)
            BIO_printf(bio_err, "User errors %d.\n", errors);

    if (verbose)
        BIO_printf(bio_err, "SRP terminating with code %d.\n", ret);

    OPENSSL_free(passin);
    OPENSSL_free(passout);
    if (ret)
        ERR_print_errors(bio_err);
    NCONF_free(conf);
    free_index(db);
    release_engine(e);
    return ret;
}
#endif
Commit	Line	Data
0f113f3e	1	/*
6738bf14	2	* Copyright 2004-2018 The OpenSSL Project Authors. All Rights Reserved.
edc032b5	3	*
846e33c7 RS	4	* Licensed under the OpenSSL license (the "License"). You may not use
	5	* this file except in compliance with the License. You can obtain a copy
	6	* in the file LICENSE in the source distribution or at
	7	* https://www.openssl.org/source/license.html
edc032b5	8	*/
effaf4de	9
edc032b5	10	#include <openssl/opensslconf.h>
effaf4de RS	11	#ifdef OPENSSL_NO_SRP
	12	NON_EMPTY_TRANSLATION_UNIT
	13	#else
edc032b5	14
effaf4de RS	15	# include <stdio.h>
	16	# include <stdlib.h>
	17	# include <string.h>
	18	# include <openssl/conf.h>
	19	# include <openssl/bio.h>
	20	# include <openssl/err.h>
	21	# include <openssl/txt_db.h>
	22	# include <openssl/buffer.h>
	23	# include <openssl/srp.h>
	24	# include "apps.h"
dab2cd68	25	# include "progs.h"
6e81b270	26
6e81b270 AP	27	# define BASE_SECTION "srp"
	28	# define CONFIG_FILE "openssl.cnf"
	29
6e81b270 AP	30
	31	# define ENV_DATABASE "srpvfile"
	32	# define ENV_DEFAULT_SRP "default_srp"
	33
6e81b270 AP	34	static int get_index(CA_DB db, char id, char type)
	35	{
	36	char **pp;
	37	int i;
	38	if (id == NULL)
	39	return -1;
5ec3210f	40	if (type == DB_SRP_INDEX) {
6e81b270 AP	41	for (i = 0; i < sk_OPENSSL_PSTRING_num(db->db->data); i++) {
	42	pp = sk_OPENSSL_PSTRING_value(db->db->data, i);
	43	if (pp[DB_srptype][0] == DB_SRP_INDEX
86885c28	44	&& strcmp(id, pp[DB_srpid]) == 0)
6e81b270	45	return i;
5ec3210f DSC	46	}
5ec3210f DSC	47	} else {
6e81b270 AP	48	for (i = 0; i < sk_OPENSSL_PSTRING_num(db->db->data); i++) {
	49	pp = sk_OPENSSL_PSTRING_value(db->db->data, i);
	50
	51	if (pp[DB_srptype][0] != DB_SRP_INDEX
86885c28	52	&& strcmp(id, pp[DB_srpid]) == 0)
6e81b270 AP	53	return i;
6e81b270 AP	54	}
5ec3210f	55	}
6e81b270 AP	56
	57	return -1;
	58	}
edc032b5	59
ecf3a1fb	60	static void print_entry(CA_DB db, int indx, int verbose, char s)
6e81b270 AP	61	{
	62	if (indx >= 0 && verbose) {
	63	int j;
	64	char **pp = sk_OPENSSL_PSTRING_value(db->db->data, indx);
ecf3a1fb	65	BIO_printf(bio_err, "%s \"%s\"\n", s, pp[DB_srpid]);
6e81b270 AP	66	for (j = 0; j < DB_NUMBER; j++) {
	67	BIO_printf(bio_err, " %d = \"%s\"\n", j, pp[j]);
	68	}
	69	}
	70	}
edc032b5	71
ecf3a1fb	72	static void print_index(CA_DB *db, int indexindex, int verbose)
6e81b270	73	{
ecf3a1fb	74	print_entry(db, indexindex, verbose, "g N entry");
6e81b270	75	}
edc032b5	76
ecf3a1fb	77	static void print_user(CA_DB *db, int userindex, int verbose)
6e81b270 AP	78	{
	79	if (verbose > 0) {
	80	char **pp = sk_OPENSSL_PSTRING_value(db->db->data, userindex);
edc032b5	81
6e81b270	82	if (pp[DB_srptype][0] != 'I') {
ecf3a1fb RS	83	print_entry(db, userindex, verbose, "User entry");
ecf3a1fb RS	84	print_entry(db, get_index(db, pp[DB_srpgN], 'I'), verbose,
6e81b270 AP	85	"g N entry");
6e81b270 AP	86	}
edc032b5	87
6e81b270 AP	88	}
6e81b270 AP	89	}
edc032b5	90
ecf3a1fb	91	static int update_index(CA_DB db, char *row)
6e81b270 AP	92	{
	93	char **irow;
	94	int i;
	95
b4faea50	96	irow = app_malloc(sizeof(irow) (DB_NUMBER + 1), "row pointers");
0fbaef9e	97	for (i = 0; i < DB_NUMBER; i++)
6e81b270	98	irow[i] = row[i];
6e81b270 AP	99	irow[DB_NUMBER] = NULL;
	100
	101	if (!TXT_DB_insert(db->db, irow)) {
ecf3a1fb RS	102	BIO_printf(bio_err, "failed to update srpvfile\n");
ecf3a1fb RS	103	BIO_printf(bio_err, "TXT_DB error number %ld\n", db->db->error);
6e81b270 AP	104	OPENSSL_free(irow);
	105	return 0;
	106	}
	107	return 1;
	108	}
edc032b5	109
edbff8da	110	static char lookup_conf(const CONF conf, const char section, const char tag)
6e81b270	111	{
edbff8da F	112	char *entry = NCONF_get_string(conf, section, tag);
	113	if (entry == NULL)
	114	BIO_printf(bio_err, "variable lookup failed for %s::%s\n", section, tag);
	115	return entry;
6e81b270	116	}
edc032b5 BL	117
edc032b5 BL	118	static char srp_verify_user(const char user, const char *srp_verifier,
6e81b270	119	char srp_usersalt, const char g, const char *N,
ecf3a1fb	120	const char *passin, int verbose)
6e81b270	121	{
0e83981d	122	char password[1025];
6e81b270 AP	123	PW_CB_DATA cb_tmp;
	124	char *verifier = NULL;
	125	char *gNid = NULL;
0e83981d	126	int len;
6e81b270 AP	127
	128	cb_tmp.prompt_info = user;
	129	cb_tmp.password = passin;
	130
0e83981d DSC	131	len = password_callback(password, sizeof(password)-1, 0, &cb_tmp);
	132	if (len > 0) {
	133	password[len] = 0;
7e1b7485	134	if (verbose)
ecf3a1fb	135	BIO_printf(bio_err,
7e1b7485 RS	136	"Validating\n user=\"%s\"\n srp_verifier=\"%s\"\n srp_usersalt=\"%s\"\n g=\"%s\"\n N=\"%s\"\n",
7e1b7485 RS	137	user, srp_verifier, srp_usersalt, g, N);
0e83981d DSC	138	if (verbose > 1)
0e83981d DSC	139	BIO_printf(bio_err, "Pass %s\n", password);
6e81b270 AP	140
6e81b270 AP	141	OPENSSL_assert(srp_usersalt != NULL);
2234212c PY	142	if ((gNid = SRP_create_verifier(user, password, &srp_usersalt,
2234212c PY	143	&verifier, N, g)) == NULL) {
ecf3a1fb	144	BIO_printf(bio_err, "Internal error validating SRP verifier\n");
6e81b270 AP	145	} else {
	146	if (strcmp(verifier, srp_verifier))
	147	gNid = NULL;
	148	OPENSSL_free(verifier);
	149	}
0e83981d	150	OPENSSL_cleanse(password, len);
6e81b270 AP	151	}
	152	return gNid;
	153	}
edc032b5	154
71fa4513	155	static char srp_create_user(char user, char **srp_verifier,
6e81b270	156	char *srp_usersalt, char g, char *N,
ecf3a1fb	157	char *passout, int verbose)
6e81b270	158	{
0e83981d	159	char password[1025];
6e81b270 AP	160	PW_CB_DATA cb_tmp;
	161	char *gNid = NULL;
	162	char *salt = NULL;
0e83981d	163	int len;
6e81b270 AP	164	cb_tmp.prompt_info = user;
	165	cb_tmp.password = passout;
	166
0e83981d DSC	167	len = password_callback(password, sizeof(password)-1, 1, &cb_tmp);
	168	if (len > 0) {
	169	password[len] = 0;
7e1b7485	170	if (verbose)
ecf3a1fb	171	BIO_printf(bio_err, "Creating\n user=\"%s\"\n g=\"%s\"\n N=\"%s\"\n",
7e1b7485	172	user, g, N);
2234212c PY	173	if ((gNid = SRP_create_verifier(user, password, &salt,
2234212c PY	174	srp_verifier, N, g)) == NULL) {
ecf3a1fb	175	BIO_printf(bio_err, "Internal error creating SRP verifier\n");
0e83981d	176	} else {
6e81b270	177	*srp_usersalt = salt;
0e83981d DSC	178	}
0e83981d DSC	179	OPENSSL_cleanse(password, len);
7e1b7485	180	if (verbose > 1)
0e83981d DSC	181	BIO_printf(bio_err, "gNid=%s salt =\"%s\"\n verifier =\"%s\"\n",
0e83981d DSC	182	gNid, salt, *srp_verifier);
6e81b270 AP	183
	184	}
	185	return gNid;
	186	}
edc032b5	187
7e1b7485 RS	188	typedef enum OPTION_choice {
	189	OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
	190	OPT_VERBOSE, OPT_CONFIG, OPT_NAME, OPT_SRPVFILE, OPT_ADD,
	191	OPT_DELETE, OPT_MODIFY, OPT_LIST, OPT_GN, OPT_USERINFO,
f1b8b001	192	OPT_PASSIN, OPT_PASSOUT, OPT_ENGINE, OPT_R_ENUM
7e1b7485 RS	193	} OPTION_CHOICE;
7e1b7485 RS	194
44c83ebd	195	const OPTIONS srp_options[] = {
7e1b7485 RS	196	{"help", OPT_HELP, '-', "Display this summary"},
	197	{"verbose", OPT_VERBOSE, '-', "Talk a lot while doing things"},
	198	{"config", OPT_CONFIG, '<', "A config file"},
	199	{"name", OPT_NAME, 's', "The particular srp definition to use"},
	200	{"srpvfile", OPT_SRPVFILE, '<', "The srp verifier file name"},
	201	{"add", OPT_ADD, '-', "Add a user and srp verifier"},
	202	{"modify", OPT_MODIFY, '-',
	203	"Modify the srp verifier of an existing user"},
	204	{"delete", OPT_DELETE, '-', "Delete user from verifier file"},
	205	{"list", OPT_LIST, '-', "List users"},
	206	{"gn", OPT_GN, 's', "Set g and N values to be used for new verifier"},
	207	{"userinfo", OPT_USERINFO, 's', "Additional info to be set for user"},
	208	{"passin", OPT_PASSIN, 's', "Input file pass phrase source"},
	209	{"passout", OPT_PASSOUT, 's', "Output file pass phrase source"},
3ee1eac2	210	OPT_R_OPTIONS,
6e81b270	211	# ifndef OPENSSL_NO_ENGINE
7e1b7485	212	{"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
6e81b270	213	# endif
7e1b7485 RS	214	{NULL}
	215	};
	216
	217	int srp_main(int argc, char **argv)
	218	{
dd1abd44	219	ENGINE *e = NULL;
7e1b7485	220	CA_DB *db = NULL;
7e1b7485	221	CONF *conf = NULL;
cc01d217 RS	222	int gNindex = -1, maxgN = -1, ret = 1, errors = 0, verbose = 0, i;
cc01d217 RS	223	int doupdatedb = 0, mode = OPT_ERR;
7e1b7485 RS	224	char user = NULL, passinarg = NULL, *passoutarg = NULL;
7e1b7485 RS	225	char passin = NULL, passout = NULL, gN = NULL, userinfo = NULL;
3ee1eac2	226	char *section = NULL;
dfd6211c MC	227	char *gNrow = NULL, configfile = NULL;
dfd6211c MC	228	char srpvfile = NULL, pp, prog;
7e1b7485	229	OPTION_CHOICE o;
6e81b270	230
7e1b7485 RS	231	prog = opt_init(argc, argv, srp_options);
	232	while ((o = opt_next()) != OPT_EOF) {
	233	switch (o) {
	234	case OPT_EOF:
	235	case OPT_ERR:
	236	opthelp:
	237	BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
	238	goto end;
	239	case OPT_HELP:
	240	opt_help(srp_options);
	241	ret = 0;
	242	goto end;
	243	case OPT_VERBOSE:
6e81b270	244	verbose++;
6e81b270	245	break;
7e1b7485 RS	246	case OPT_CONFIG:
7e1b7485 RS	247	configfile = opt_arg();
6e81b270	248	break;
7e1b7485 RS	249	case OPT_NAME:
	250	section = opt_arg();
	251	break;
	252	case OPT_SRPVFILE:
dfd6211c	253	srpvfile = opt_arg();
7e1b7485 RS	254	break;
	255	case OPT_ADD:
	256	case OPT_DELETE:
	257	case OPT_MODIFY:
	258	case OPT_LIST:
	259	if (mode != OPT_ERR) {
	260	BIO_printf(bio_err,
0e83981d	261	"%s: Only one of -add/-delete/-modify/-list\n",
7e1b7485 RS	262	prog);
	263	goto opthelp;
	264	}
	265	mode = o;
	266	break;
	267	case OPT_GN:
	268	gN = opt_arg();
	269	break;
	270	case OPT_USERINFO:
	271	userinfo = opt_arg();
	272	break;
	273	case OPT_PASSIN:
	274	passinarg = opt_arg();
	275	break;
	276	case OPT_PASSOUT:
	277	passoutarg = opt_arg();
	278	break;
	279	case OPT_ENGINE:
dd1abd44	280	e = setup_engine(opt_arg(), 0);
7e1b7485	281	break;
3ee1eac2 RS	282	case OPT_R_CASES:
	283	if (!opt_rand(o))
	284	goto end;
	285	break;
7e1b7485	286	}
6e81b270	287	}
7e1b7485 RS	288	argc = opt_num_rest();
7e1b7485 RS	289	argv = opt_rest();
6e81b270	290
2234212c	291	if (srpvfile != NULL && configfile != NULL) {
6e81b270	292	BIO_printf(bio_err,
dfd6211c	293	"-srpvfile and -configfile cannot be specified together.\n");
7e1b7485	294	goto end;
6e81b270	295	}
7e1b7485 RS	296	if (mode == OPT_ERR) {
	297	BIO_printf(bio_err,
	298	"Exactly one of the options -add, -delete, -modify -list must be specified.\n");
	299	goto opthelp;
6e81b270	300	}
c27363f5 RS	301	if (mode == OPT_DELETE \|\| mode == OPT_MODIFY \|\| mode == OPT_ADD) {
	302	if (argc == 0) {
	303	BIO_printf(bio_err, "Need at least one user.\n");
	304	goto opthelp;
	305	}
	306	user = *argv++;
6e81b270	307	}
2234212c	308	if ((passinarg != NULL \|\| passoutarg != NULL) && argc != 1) {
6e81b270 AP	309	BIO_printf(bio_err,
6e81b270 AP	310	"-passin, -passout arguments only valid with one user.\n");
7e1b7485	311	goto opthelp;
6e81b270	312	}
6e81b270	313
7e1b7485	314	if (!app_passwd(passinarg, passoutarg, &passin, &passout)) {
6e81b270	315	BIO_printf(bio_err, "Error getting passwords\n");
7e1b7485	316	goto end;
6e81b270 AP	317	}
6e81b270 AP	318
2234212c PY	319	if (srpvfile == NULL) {
2234212c PY	320	if (configfile == NULL)
dfd6211c MC	321	configfile = default_config_file;
dfd6211c MC	322
7e1b7485	323	if (verbose)
cc01d217 RS	324	BIO_printf(bio_err, "Using configuration from %s\n",
	325	configfile);
	326	conf = app_load_config(configfile);
	327	if (conf == NULL)
7e1b7485	328	goto end;
c821defc	329	if (configfile != default_config_file && !app_load_modules(conf))
296f54ee	330	goto end;
6e81b270	331
6e81b270 AP	332	/* Lets get the config section we are using */
6e81b270 AP	333	if (section == NULL) {
7e1b7485 RS	334	if (verbose)
	335	BIO_printf(bio_err,
	336	"trying to read " ENV_DEFAULT_SRP
44fdf1c2	337	" in " BASE_SECTION "\n");
6e81b270	338
edbff8da F	339	section = lookup_conf(conf, BASE_SECTION, ENV_DEFAULT_SRP);
edbff8da F	340	if (section == NULL)
7e1b7485	341	goto end;
6e81b270 AP	342	}
6e81b270 AP	343
3ee1eac2	344	app_RAND_load_conf(conf, BASE_SECTION);
6e81b270	345
7e1b7485 RS	346	if (verbose)
	347	BIO_printf(bio_err,
	348	"trying to read " ENV_DATABASE " in section \"%s\"\n",
	349	section);
6e81b270	350
edbff8da F	351	srpvfile = lookup_conf(conf, section, ENV_DATABASE);
edbff8da F	352	if (srpvfile == NULL)
7e1b7485	353	goto end;
6e81b270	354	}
6e81b270	355
7e1b7485 RS	356	if (verbose)
7e1b7485 RS	357	BIO_printf(bio_err, "Trying to read SRP verifier file \"%s\"\n",
dfd6211c	358	srpvfile);
6e81b270	359
9d7ec809	360	db = load_index(srpvfile, NULL);
6e81b270	361	if (db == NULL)
7e1b7485	362	goto end;
6e81b270 AP	363
	364	/* Lets check some fields */
	365	for (i = 0; i < sk_OPENSSL_PSTRING_num(db->db->data); i++) {
	366	pp = sk_OPENSSL_PSTRING_value(db->db->data, i);
	367
	368	if (pp[DB_srptype][0] == DB_SRP_INDEX) {
	369	maxgN = i;
86885c28	370	if ((gNindex < 0) && (gN != NULL) && strcmp(gN, pp[DB_srpid]) == 0)
6e81b270 AP	371	gNindex = i;
6e81b270 AP	372
ecf3a1fb	373	print_index(db, i, verbose > 1);
6e81b270 AP	374	}
	375	}
	376
7e1b7485 RS	377	if (verbose)
7e1b7485 RS	378	BIO_printf(bio_err, "Database initialised\n");
6e81b270 AP	379
	380	if (gNindex >= 0) {
	381	gNrow = sk_OPENSSL_PSTRING_value(db->db->data, gNindex);
ecf3a1fb	382	print_entry(db, gNindex, verbose > 1, "Default g and N");
6e81b270 AP	383	} else if (maxgN > 0 && !SRP_get_default_gN(gN)) {
6e81b270 AP	384	BIO_printf(bio_err, "No g and N value for index \"%s\"\n", gN);
7e1b7485	385	goto end;
6e81b270	386	} else {
7e1b7485 RS	387	if (verbose)
7e1b7485 RS	388	BIO_printf(bio_err, "Database has no g N information.\n");
6e81b270 AP	389	gNrow = NULL;
	390	}
	391
7e1b7485 RS	392	if (verbose > 1)
7e1b7485 RS	393	BIO_printf(bio_err, "Starting user processing\n");
6e81b270	394
c27363f5	395	while (mode == OPT_LIST \|\| user != NULL) {
6e81b270	396	int userindex = -1;
edbff8da F	397
	398	if (user != NULL && verbose > 1)
	399	BIO_printf(bio_err, "Processing user \"%s\"\n", user);
2234212c	400	if ((userindex = get_index(db, user, 'U')) >= 0)
edbff8da	401	print_user(db, userindex, (verbose > 0) \|\| mode == OPT_LIST);
6e81b270	402
7e1b7485	403	if (mode == OPT_LIST) {
6e81b270 AP	404	if (user == NULL) {
	405	BIO_printf(bio_err, "List all users\n");
	406
2234212c	407	for (i = 0; i < sk_OPENSSL_PSTRING_num(db->db->data); i++)
ecf3a1fb	408	print_user(db, i, 1);
6e81b270 AP	409	} else if (userindex < 0) {
	410	BIO_printf(bio_err,
	411	"user \"%s\" does not exist, ignored. t\n", user);
	412	errors++;
	413	}
7e1b7485	414	} else if (mode == OPT_ADD) {
6e81b270 AP	415	if (userindex >= 0) {
	416	/* reactivation of a new user */
	417	char **row =
	418	sk_OPENSSL_PSTRING_value(db->db->data, userindex);
	419	BIO_printf(bio_err, "user \"%s\" reactivated.\n", user);
	420	row[DB_srptype][0] = 'V';
	421
	422	doupdatedb = 1;
	423	} else {
	424	char *row[DB_NUMBER];
	425	char *gNid;
	426	row[DB_srpverifier] = NULL;
	427	row[DB_srpsalt] = NULL;
	428	row[DB_srpinfo] = NULL;
7e1b7485 RS	429	if (!
	430	(gNid =
	431	srp_create_user(user, &(row[DB_srpverifier]),
	432	&(row[DB_srpsalt]),
	433	gNrow ? gNrow[DB_srpsalt] : gN,
	434	gNrow ? gNrow[DB_srpverifier] : NULL,
ecf3a1fb	435	passout, verbose))) {
6e81b270	436	BIO_printf(bio_err,
7e1b7485 RS	437	"Cannot create srp verifier for user \"%s\", operation abandoned .\n",
7e1b7485 RS	438	user);
6e81b270	439	errors++;
7e1b7485	440	goto end;
6e81b270	441	}
7644a9ae RS	442	row[DB_srpid] = OPENSSL_strdup(user);
	443	row[DB_srptype] = OPENSSL_strdup("v");
	444	row[DB_srpgN] = OPENSSL_strdup(gNid);
6e81b270	445
75ebbd9a RS	446	if ((row[DB_srpid] == NULL)
	447	\|\| (row[DB_srpgN] == NULL)
	448	\|\| (row[DB_srptype] == NULL)
	449	\|\| (row[DB_srpverifier] == NULL)
	450	\|\| (row[DB_srpsalt] == NULL)
	451	\|\| (userinfo
7644a9ae	452	&& ((row[DB_srpinfo] = OPENSSL_strdup(userinfo)) == NULL))
ecf3a1fb	453	\|\| !update_index(db, row)) {
b548a1f1 RS	454	OPENSSL_free(row[DB_srpid]);
	455	OPENSSL_free(row[DB_srpgN]);
	456	OPENSSL_free(row[DB_srpinfo]);
	457	OPENSSL_free(row[DB_srptype]);
	458	OPENSSL_free(row[DB_srpverifier]);
	459	OPENSSL_free(row[DB_srpsalt]);
7e1b7485	460	goto end;
6e81b270 AP	461	}
	462	doupdatedb = 1;
	463	}
7e1b7485	464	} else if (mode == OPT_MODIFY) {
6e81b270 AP	465	if (userindex < 0) {
	466	BIO_printf(bio_err,
	467	"user \"%s\" does not exist, operation ignored.\n",
	468	user);
	469	errors++;
	470	} else {
	471
	472	char **row =
	473	sk_OPENSSL_PSTRING_value(db->db->data, userindex);
	474	char type = row[DB_srptype][0];
	475	if (type == 'v') {
	476	BIO_printf(bio_err,
	477	"user \"%s\" already updated, operation ignored.\n",
	478	user);
	479	errors++;
	480	} else {
	481	char *gNid;
	482
	483	if (row[DB_srptype][0] == 'V') {
	484	int user_gN;
	485	char **irow = NULL;
7e1b7485 RS	486	if (verbose)
	487	BIO_printf(bio_err,
	488	"Verifying password for user \"%s\"\n",
	489	user);
6e81b270 AP	490	if ((user_gN =
	491	get_index(db, row[DB_srpgN], DB_SRP_INDEX)) >= 0)
	492	irow =
	493	sk_OPENSSL_PSTRING_value(db->db->data,
	494	userindex);
	495
	496	if (!srp_verify_user
	497	(user, row[DB_srpverifier], row[DB_srpsalt],
	498	irow ? irow[DB_srpsalt] : row[DB_srpgN],
	499	irow ? irow[DB_srpverifier] : NULL, passin,
ecf3a1fb	500	verbose)) {
6e81b270 AP	501	BIO_printf(bio_err,
	502	"Invalid password for user \"%s\", operation abandoned.\n",
	503	user);
	504	errors++;
7e1b7485	505	goto end;
6e81b270 AP	506	}
6e81b270 AP	507	}
7e1b7485 RS	508	if (verbose)
	509	BIO_printf(bio_err, "Password for user \"%s\" ok.\n",
	510	user);
	511
	512	if (!
	513	(gNid =
	514	srp_create_user(user, &(row[DB_srpverifier]),
	515	&(row[DB_srpsalt]),
	516	gNrow ? gNrow[DB_srpsalt] : NULL,
	517	gNrow ? gNrow[DB_srpverifier] : NULL,
ecf3a1fb	518	passout, verbose))) {
6e81b270	519	BIO_printf(bio_err,
7e1b7485 RS	520	"Cannot create srp verifier for user \"%s\", operation abandoned.\n",
7e1b7485 RS	521	user);
6e81b270	522	errors++;
7e1b7485	523	goto end;
6e81b270 AP	524	}
	525
	526	row[DB_srptype][0] = 'v';
7644a9ae	527	row[DB_srpgN] = OPENSSL_strdup(gNid);
6e81b270	528
75ebbd9a RS	529	if (row[DB_srpid] == NULL
	530	\|\| row[DB_srpgN] == NULL
	531	\|\| row[DB_srptype] == NULL
	532	\|\| row[DB_srpverifier] == NULL
	533	\|\| row[DB_srpsalt] == NULL
6e81b270	534	\|\| (userinfo
7644a9ae	535	&& ((row[DB_srpinfo] = OPENSSL_strdup(userinfo))
75ebbd9a	536	== NULL)))
7e1b7485	537	goto end;
6e81b270 AP	538
	539	doupdatedb = 1;
	540	}
	541	}
7e1b7485	542	} else if (mode == OPT_DELETE) {
6e81b270 AP	543	if (userindex < 0) {
	544	BIO_printf(bio_err,
	545	"user \"%s\" does not exist, operation ignored. t\n",
	546	user);
	547	errors++;
	548	} else {
75ebbd9a	549	char **xpp = sk_OPENSSL_PSTRING_value(db->db->data, userindex);
6e81b270	550
75ebbd9a	551	BIO_printf(bio_err, "user \"%s\" revoked. t\n", user);
6e81b270	552	xpp[DB_srptype][0] = 'R';
6e81b270 AP	553	doupdatedb = 1;
	554	}
	555	}
c27363f5 RS	556	user = *argv++;
c27363f5 RS	557	if (user == NULL) {
5ec3210f DSC	558	/* no more processing in any mode if no users left */
5ec3210f DSC	559	break;
6e81b270 AP	560	}
	561	}
	562
7e1b7485 RS	563	if (verbose)
7e1b7485 RS	564	BIO_printf(bio_err, "User procession done.\n");
6e81b270 AP	565
	566	if (doupdatedb) {
	567	/* Lets check some fields */
	568	for (i = 0; i < sk_OPENSSL_PSTRING_num(db->db->data); i++) {
	569	pp = sk_OPENSSL_PSTRING_value(db->db->data, i);
	570
	571	if (pp[DB_srptype][0] == 'v') {
	572	pp[DB_srptype][0] = 'V';
ecf3a1fb	573	print_user(db, i, verbose);
6e81b270 AP	574	}
	575	}
	576
7e1b7485 RS	577	if (verbose)
7e1b7485 RS	578	BIO_printf(bio_err, "Trying to update srpvfile.\n");
dfd6211c	579	if (!save_index(srpvfile, "new", db))
7e1b7485	580	goto end;
6e81b270	581
7e1b7485 RS	582	if (verbose)
7e1b7485 RS	583	BIO_printf(bio_err, "Temporary srpvfile created.\n");
dfd6211c	584	if (!rotate_index(srpvfile, "new", "old"))
7e1b7485	585	goto end;
6e81b270	586
7e1b7485 RS	587	if (verbose)
7e1b7485 RS	588	BIO_printf(bio_err, "srpvfile updated.\n");
6e81b270 AP	589	}
	590
	591	ret = (errors != 0);
7e1b7485	592	end:
6e81b270	593	if (errors != 0)
7e1b7485 RS	594	if (verbose)
7e1b7485 RS	595	BIO_printf(bio_err, "User errors %d.\n", errors);
6e81b270	596
7e1b7485 RS	597	if (verbose)
7e1b7485 RS	598	BIO_printf(bio_err, "SRP terminating with code %d.\n", ret);
8bf78043	599
7b0ee135 MC	600	OPENSSL_free(passin);
7b0ee135 MC	601	OPENSSL_free(passout);
6e81b270 AP	602	if (ret)
6e81b270 AP	603	ERR_print_errors(bio_err);
25aaa98a RS	604	NCONF_free(conf);
25aaa98a RS	605	free_index(db);
dd1abd44	606	release_engine(e);
26a7d938	607	return ret;
6e81b270	608	}
edc032b5	609	#endif