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

/*
 * Copyright 2004-2017 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"

# 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	/*
2234212c	2	* Copyright 2004-2017 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"
6e81b270	25
6e81b270 AP	26	# define BASE_SECTION "srp"
	27	# define CONFIG_FILE "openssl.cnf"
	28
6e81b270 AP	29
	30	# define ENV_DATABASE "srpvfile"
	31	# define ENV_DEFAULT_SRP "default_srp"
	32
6e81b270 AP	33	static int get_index(CA_DB db, char id, char type)
	34	{
	35	char **pp;
	36	int i;
	37	if (id == NULL)
	38	return -1;
5ec3210f	39	if (type == DB_SRP_INDEX) {
6e81b270 AP	40	for (i = 0; i < sk_OPENSSL_PSTRING_num(db->db->data); i++) {
	41	pp = sk_OPENSSL_PSTRING_value(db->db->data, i);
	42	if (pp[DB_srptype][0] == DB_SRP_INDEX
86885c28	43	&& strcmp(id, pp[DB_srpid]) == 0)
6e81b270	44	return i;
5ec3210f DSC	45	}
5ec3210f DSC	46	} else {
6e81b270 AP	47	for (i = 0; i < sk_OPENSSL_PSTRING_num(db->db->data); i++) {
	48	pp = sk_OPENSSL_PSTRING_value(db->db->data, i);
	49
	50	if (pp[DB_srptype][0] != DB_SRP_INDEX
86885c28	51	&& strcmp(id, pp[DB_srpid]) == 0)
6e81b270 AP	52	return i;
6e81b270 AP	53	}
5ec3210f	54	}
6e81b270 AP	55
	56	return -1;
	57	}
edc032b5	58
ecf3a1fb	59	static void print_entry(CA_DB db, int indx, int verbose, char s)
6e81b270 AP	60	{
	61	if (indx >= 0 && verbose) {
	62	int j;
	63	char **pp = sk_OPENSSL_PSTRING_value(db->db->data, indx);
ecf3a1fb	64	BIO_printf(bio_err, "%s \"%s\"\n", s, pp[DB_srpid]);
6e81b270 AP	65	for (j = 0; j < DB_NUMBER; j++) {
	66	BIO_printf(bio_err, " %d = \"%s\"\n", j, pp[j]);
	67	}
	68	}
	69	}
edc032b5	70
ecf3a1fb	71	static void print_index(CA_DB *db, int indexindex, int verbose)
6e81b270	72	{
ecf3a1fb	73	print_entry(db, indexindex, verbose, "g N entry");
6e81b270	74	}
edc032b5	75
ecf3a1fb	76	static void print_user(CA_DB *db, int userindex, int verbose)
6e81b270 AP	77	{
	78	if (verbose > 0) {
	79	char **pp = sk_OPENSSL_PSTRING_value(db->db->data, userindex);
edc032b5	80
6e81b270	81	if (pp[DB_srptype][0] != 'I') {
ecf3a1fb RS	82	print_entry(db, userindex, verbose, "User entry");
ecf3a1fb RS	83	print_entry(db, get_index(db, pp[DB_srpgN], 'I'), verbose,
6e81b270 AP	84	"g N entry");
6e81b270 AP	85	}
edc032b5	86
6e81b270 AP	87	}
6e81b270 AP	88	}
edc032b5	89
ecf3a1fb	90	static int update_index(CA_DB db, char *row)
6e81b270 AP	91	{
	92	char **irow;
	93	int i;
	94
b4faea50	95	irow = app_malloc(sizeof(irow) (DB_NUMBER + 1), "row pointers");
0fbaef9e	96	for (i = 0; i < DB_NUMBER; i++)
6e81b270	97	irow[i] = row[i];
6e81b270 AP	98	irow[DB_NUMBER] = NULL;
	99
	100	if (!TXT_DB_insert(db->db, irow)) {
ecf3a1fb RS	101	BIO_printf(bio_err, "failed to update srpvfile\n");
ecf3a1fb RS	102	BIO_printf(bio_err, "TXT_DB error number %ld\n", db->db->error);
6e81b270 AP	103	OPENSSL_free(irow);
	104	return 0;
	105	}
	106	return 1;
	107	}
edc032b5	108
edbff8da	109	static char lookup_conf(const CONF conf, const char section, const char tag)
6e81b270	110	{
edbff8da F	111	char *entry = NCONF_get_string(conf, section, tag);
	112	if (entry == NULL)
	113	BIO_printf(bio_err, "variable lookup failed for %s::%s\n", section, tag);
	114	return entry;
6e81b270	115	}
edc032b5 BL	116
edc032b5 BL	117	static char srp_verify_user(const char user, const char *srp_verifier,
6e81b270	118	char srp_usersalt, const char g, const char *N,
ecf3a1fb	119	const char *passin, int verbose)
6e81b270	120	{
0e83981d	121	char password[1025];
6e81b270 AP	122	PW_CB_DATA cb_tmp;
	123	char *verifier = NULL;
	124	char *gNid = NULL;
0e83981d	125	int len;
6e81b270 AP	126
	127	cb_tmp.prompt_info = user;
	128	cb_tmp.password = passin;
	129
0e83981d DSC	130	len = password_callback(password, sizeof(password)-1, 0, &cb_tmp);
	131	if (len > 0) {
	132	password[len] = 0;
7e1b7485	133	if (verbose)
ecf3a1fb	134	BIO_printf(bio_err,
7e1b7485 RS	135	"Validating\n user=\"%s\"\n srp_verifier=\"%s\"\n srp_usersalt=\"%s\"\n g=\"%s\"\n N=\"%s\"\n",
7e1b7485 RS	136	user, srp_verifier, srp_usersalt, g, N);
0e83981d DSC	137	if (verbose > 1)
0e83981d DSC	138	BIO_printf(bio_err, "Pass %s\n", password);
6e81b270 AP	139
6e81b270 AP	140	OPENSSL_assert(srp_usersalt != NULL);
2234212c PY	141	if ((gNid = SRP_create_verifier(user, password, &srp_usersalt,
2234212c PY	142	&verifier, N, g)) == NULL) {
ecf3a1fb	143	BIO_printf(bio_err, "Internal error validating SRP verifier\n");
6e81b270 AP	144	} else {
	145	if (strcmp(verifier, srp_verifier))
	146	gNid = NULL;
	147	OPENSSL_free(verifier);
	148	}
0e83981d	149	OPENSSL_cleanse(password, len);
6e81b270 AP	150	}
	151	return gNid;
	152	}
edc032b5	153
71fa4513	154	static char srp_create_user(char user, char **srp_verifier,
6e81b270	155	char *srp_usersalt, char g, char *N,
ecf3a1fb	156	char *passout, int verbose)
6e81b270	157	{
0e83981d	158	char password[1025];
6e81b270 AP	159	PW_CB_DATA cb_tmp;
	160	char *gNid = NULL;
	161	char *salt = NULL;
0e83981d	162	int len;
6e81b270 AP	163	cb_tmp.prompt_info = user;
	164	cb_tmp.password = passout;
	165
0e83981d DSC	166	len = password_callback(password, sizeof(password)-1, 1, &cb_tmp);
	167	if (len > 0) {
	168	password[len] = 0;
7e1b7485	169	if (verbose)
ecf3a1fb	170	BIO_printf(bio_err, "Creating\n user=\"%s\"\n g=\"%s\"\n N=\"%s\"\n",
7e1b7485	171	user, g, N);
2234212c PY	172	if ((gNid = SRP_create_verifier(user, password, &salt,
2234212c PY	173	srp_verifier, N, g)) == NULL) {
ecf3a1fb	174	BIO_printf(bio_err, "Internal error creating SRP verifier\n");
0e83981d	175	} else {
6e81b270	176	*srp_usersalt = salt;
0e83981d DSC	177	}
0e83981d DSC	178	OPENSSL_cleanse(password, len);
7e1b7485	179	if (verbose > 1)
0e83981d DSC	180	BIO_printf(bio_err, "gNid=%s salt =\"%s\"\n verifier =\"%s\"\n",
0e83981d DSC	181	gNid, salt, *srp_verifier);
6e81b270 AP	182
	183	}
	184	return gNid;
	185	}
edc032b5	186
7e1b7485 RS	187	typedef enum OPTION_choice {
	188	OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
	189	OPT_VERBOSE, OPT_CONFIG, OPT_NAME, OPT_SRPVFILE, OPT_ADD,
	190	OPT_DELETE, OPT_MODIFY, OPT_LIST, OPT_GN, OPT_USERINFO,
f1b8b001	191	OPT_PASSIN, OPT_PASSOUT, OPT_ENGINE, OPT_R_ENUM
7e1b7485 RS	192	} OPTION_CHOICE;
7e1b7485 RS	193
44c83ebd	194	const OPTIONS srp_options[] = {
7e1b7485 RS	195	{"help", OPT_HELP, '-', "Display this summary"},
	196	{"verbose", OPT_VERBOSE, '-', "Talk a lot while doing things"},
	197	{"config", OPT_CONFIG, '<', "A config file"},
	198	{"name", OPT_NAME, 's', "The particular srp definition to use"},
	199	{"srpvfile", OPT_SRPVFILE, '<', "The srp verifier file name"},
	200	{"add", OPT_ADD, '-', "Add a user and srp verifier"},
	201	{"modify", OPT_MODIFY, '-',
	202	"Modify the srp verifier of an existing user"},
	203	{"delete", OPT_DELETE, '-', "Delete user from verifier file"},
	204	{"list", OPT_LIST, '-', "List users"},
	205	{"gn", OPT_GN, 's', "Set g and N values to be used for new verifier"},
	206	{"userinfo", OPT_USERINFO, 's', "Additional info to be set for user"},
	207	{"passin", OPT_PASSIN, 's', "Input file pass phrase source"},
	208	{"passout", OPT_PASSOUT, 's', "Output file pass phrase source"},
3ee1eac2	209	OPT_R_OPTIONS,
6e81b270	210	# ifndef OPENSSL_NO_ENGINE
7e1b7485	211	{"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
6e81b270	212	# endif
7e1b7485 RS	213	{NULL}
	214	};
	215
	216	int srp_main(int argc, char **argv)
	217	{
dd1abd44	218	ENGINE *e = NULL;
7e1b7485	219	CA_DB *db = NULL;
7e1b7485	220	CONF *conf = NULL;
cc01d217 RS	221	int gNindex = -1, maxgN = -1, ret = 1, errors = 0, verbose = 0, i;
cc01d217 RS	222	int doupdatedb = 0, mode = OPT_ERR;
7e1b7485 RS	223	char user = NULL, passinarg = NULL, *passoutarg = NULL;
7e1b7485 RS	224	char passin = NULL, passout = NULL, gN = NULL, userinfo = NULL;
3ee1eac2	225	char *section = NULL;
dfd6211c MC	226	char *gNrow = NULL, configfile = NULL;
dfd6211c MC	227	char srpvfile = NULL, pp, prog;
7e1b7485	228	OPTION_CHOICE o;
6e81b270	229
7e1b7485 RS	230	prog = opt_init(argc, argv, srp_options);
	231	while ((o = opt_next()) != OPT_EOF) {
	232	switch (o) {
	233	case OPT_EOF:
	234	case OPT_ERR:
	235	opthelp:
	236	BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
	237	goto end;
	238	case OPT_HELP:
	239	opt_help(srp_options);
	240	ret = 0;
	241	goto end;
	242	case OPT_VERBOSE:
6e81b270	243	verbose++;
6e81b270	244	break;
7e1b7485 RS	245	case OPT_CONFIG:
7e1b7485 RS	246	configfile = opt_arg();
6e81b270	247	break;
7e1b7485 RS	248	case OPT_NAME:
	249	section = opt_arg();
	250	break;
	251	case OPT_SRPVFILE:
dfd6211c	252	srpvfile = opt_arg();
7e1b7485 RS	253	break;
	254	case OPT_ADD:
	255	case OPT_DELETE:
	256	case OPT_MODIFY:
	257	case OPT_LIST:
	258	if (mode != OPT_ERR) {
	259	BIO_printf(bio_err,
0e83981d	260	"%s: Only one of -add/-delete/-modify/-list\n",
7e1b7485 RS	261	prog);
	262	goto opthelp;
	263	}
	264	mode = o;
	265	break;
	266	case OPT_GN:
	267	gN = opt_arg();
	268	break;
	269	case OPT_USERINFO:
	270	userinfo = opt_arg();
	271	break;
	272	case OPT_PASSIN:
	273	passinarg = opt_arg();
	274	break;
	275	case OPT_PASSOUT:
	276	passoutarg = opt_arg();
	277	break;
	278	case OPT_ENGINE:
dd1abd44	279	e = setup_engine(opt_arg(), 0);
7e1b7485	280	break;
3ee1eac2 RS	281	case OPT_R_CASES:
	282	if (!opt_rand(o))
	283	goto end;
	284	break;
7e1b7485	285	}
6e81b270	286	}
7e1b7485 RS	287	argc = opt_num_rest();
7e1b7485 RS	288	argv = opt_rest();
6e81b270	289
2234212c	290	if (srpvfile != NULL && configfile != NULL) {
6e81b270	291	BIO_printf(bio_err,
dfd6211c	292	"-srpvfile and -configfile cannot be specified together.\n");
7e1b7485	293	goto end;
6e81b270	294	}
7e1b7485 RS	295	if (mode == OPT_ERR) {
	296	BIO_printf(bio_err,
	297	"Exactly one of the options -add, -delete, -modify -list must be specified.\n");
	298	goto opthelp;
6e81b270	299	}
c27363f5 RS	300	if (mode == OPT_DELETE \|\| mode == OPT_MODIFY \|\| mode == OPT_ADD) {
	301	if (argc == 0) {
	302	BIO_printf(bio_err, "Need at least one user.\n");
	303	goto opthelp;
	304	}
	305	user = *argv++;
6e81b270	306	}
2234212c	307	if ((passinarg != NULL \|\| passoutarg != NULL) && argc != 1) {
6e81b270 AP	308	BIO_printf(bio_err,
6e81b270 AP	309	"-passin, -passout arguments only valid with one user.\n");
7e1b7485	310	goto opthelp;
6e81b270	311	}
6e81b270	312
7e1b7485	313	if (!app_passwd(passinarg, passoutarg, &passin, &passout)) {
6e81b270	314	BIO_printf(bio_err, "Error getting passwords\n");
7e1b7485	315	goto end;
6e81b270 AP	316	}
6e81b270 AP	317
2234212c PY	318	if (srpvfile == NULL) {
2234212c PY	319	if (configfile == NULL)
dfd6211c MC	320	configfile = default_config_file;
dfd6211c MC	321
7e1b7485	322	if (verbose)
cc01d217 RS	323	BIO_printf(bio_err, "Using configuration from %s\n",
	324	configfile);
	325	conf = app_load_config(configfile);
	326	if (conf == NULL)
7e1b7485	327	goto end;
c821defc	328	if (configfile != default_config_file && !app_load_modules(conf))
296f54ee	329	goto end;
6e81b270	330
6e81b270 AP	331	/* Lets get the config section we are using */
6e81b270 AP	332	if (section == NULL) {
7e1b7485 RS	333	if (verbose)
	334	BIO_printf(bio_err,
	335	"trying to read " ENV_DEFAULT_SRP
44fdf1c2	336	" in " BASE_SECTION "\n");
6e81b270	337
edbff8da F	338	section = lookup_conf(conf, BASE_SECTION, ENV_DEFAULT_SRP);
edbff8da F	339	if (section == NULL)
7e1b7485	340	goto end;
6e81b270 AP	341	}
6e81b270 AP	342
3ee1eac2	343	app_RAND_load_conf(conf, BASE_SECTION);
6e81b270	344
7e1b7485 RS	345	if (verbose)
	346	BIO_printf(bio_err,
	347	"trying to read " ENV_DATABASE " in section \"%s\"\n",
	348	section);
6e81b270	349
edbff8da F	350	srpvfile = lookup_conf(conf, section, ENV_DATABASE);
edbff8da F	351	if (srpvfile == NULL)
7e1b7485	352	goto end;
6e81b270	353	}
6e81b270	354
7e1b7485 RS	355	if (verbose)
7e1b7485 RS	356	BIO_printf(bio_err, "Trying to read SRP verifier file \"%s\"\n",
dfd6211c	357	srpvfile);
6e81b270	358
9d7ec809	359	db = load_index(srpvfile, NULL);
6e81b270	360	if (db == NULL)
7e1b7485	361	goto end;
6e81b270 AP	362
	363	/* Lets check some fields */
	364	for (i = 0; i < sk_OPENSSL_PSTRING_num(db->db->data); i++) {
	365	pp = sk_OPENSSL_PSTRING_value(db->db->data, i);
	366
	367	if (pp[DB_srptype][0] == DB_SRP_INDEX) {
	368	maxgN = i;
86885c28	369	if ((gNindex < 0) && (gN != NULL) && strcmp(gN, pp[DB_srpid]) == 0)
6e81b270 AP	370	gNindex = i;
6e81b270 AP	371
ecf3a1fb	372	print_index(db, i, verbose > 1);
6e81b270 AP	373	}
	374	}
	375
7e1b7485 RS	376	if (verbose)
7e1b7485 RS	377	BIO_printf(bio_err, "Database initialised\n");
6e81b270 AP	378
	379	if (gNindex >= 0) {
	380	gNrow = sk_OPENSSL_PSTRING_value(db->db->data, gNindex);
ecf3a1fb	381	print_entry(db, gNindex, verbose > 1, "Default g and N");
6e81b270 AP	382	} else if (maxgN > 0 && !SRP_get_default_gN(gN)) {
6e81b270 AP	383	BIO_printf(bio_err, "No g and N value for index \"%s\"\n", gN);
7e1b7485	384	goto end;
6e81b270	385	} else {
7e1b7485 RS	386	if (verbose)
7e1b7485 RS	387	BIO_printf(bio_err, "Database has no g N information.\n");
6e81b270 AP	388	gNrow = NULL;
	389	}
	390
7e1b7485 RS	391	if (verbose > 1)
7e1b7485 RS	392	BIO_printf(bio_err, "Starting user processing\n");
6e81b270	393
c27363f5	394	while (mode == OPT_LIST \|\| user != NULL) {
6e81b270	395	int userindex = -1;
edbff8da F	396
	397	if (user != NULL && verbose > 1)
	398	BIO_printf(bio_err, "Processing user \"%s\"\n", user);
2234212c	399	if ((userindex = get_index(db, user, 'U')) >= 0)
edbff8da	400	print_user(db, userindex, (verbose > 0) \|\| mode == OPT_LIST);
6e81b270	401
7e1b7485	402	if (mode == OPT_LIST) {
6e81b270 AP	403	if (user == NULL) {
	404	BIO_printf(bio_err, "List all users\n");
	405
2234212c	406	for (i = 0; i < sk_OPENSSL_PSTRING_num(db->db->data); i++)
ecf3a1fb	407	print_user(db, i, 1);
6e81b270 AP	408	} else if (userindex < 0) {
	409	BIO_printf(bio_err,
	410	"user \"%s\" does not exist, ignored. t\n", user);
	411	errors++;
	412	}
7e1b7485	413	} else if (mode == OPT_ADD) {
6e81b270 AP	414	if (userindex >= 0) {
	415	/* reactivation of a new user */
	416	char **row =
	417	sk_OPENSSL_PSTRING_value(db->db->data, userindex);
	418	BIO_printf(bio_err, "user \"%s\" reactivated.\n", user);
	419	row[DB_srptype][0] = 'V';
	420
	421	doupdatedb = 1;
	422	} else {
	423	char *row[DB_NUMBER];
	424	char *gNid;
	425	row[DB_srpverifier] = NULL;
	426	row[DB_srpsalt] = NULL;
	427	row[DB_srpinfo] = NULL;
7e1b7485 RS	428	if (!
	429	(gNid =
	430	srp_create_user(user, &(row[DB_srpverifier]),
	431	&(row[DB_srpsalt]),
	432	gNrow ? gNrow[DB_srpsalt] : gN,
	433	gNrow ? gNrow[DB_srpverifier] : NULL,
ecf3a1fb	434	passout, verbose))) {
6e81b270	435	BIO_printf(bio_err,
7e1b7485 RS	436	"Cannot create srp verifier for user \"%s\", operation abandoned .\n",
7e1b7485 RS	437	user);
6e81b270	438	errors++;
7e1b7485	439	goto end;
6e81b270	440	}
7644a9ae RS	441	row[DB_srpid] = OPENSSL_strdup(user);
	442	row[DB_srptype] = OPENSSL_strdup("v");
	443	row[DB_srpgN] = OPENSSL_strdup(gNid);
6e81b270	444
75ebbd9a RS	445	if ((row[DB_srpid] == NULL)
	446	\|\| (row[DB_srpgN] == NULL)
	447	\|\| (row[DB_srptype] == NULL)
	448	\|\| (row[DB_srpverifier] == NULL)
	449	\|\| (row[DB_srpsalt] == NULL)
	450	\|\| (userinfo
7644a9ae	451	&& ((row[DB_srpinfo] = OPENSSL_strdup(userinfo)) == NULL))
ecf3a1fb	452	\|\| !update_index(db, row)) {
b548a1f1 RS	453	OPENSSL_free(row[DB_srpid]);
	454	OPENSSL_free(row[DB_srpgN]);
	455	OPENSSL_free(row[DB_srpinfo]);
	456	OPENSSL_free(row[DB_srptype]);
	457	OPENSSL_free(row[DB_srpverifier]);
	458	OPENSSL_free(row[DB_srpsalt]);
7e1b7485	459	goto end;
6e81b270 AP	460	}
	461	doupdatedb = 1;
	462	}
7e1b7485	463	} else if (mode == OPT_MODIFY) {
6e81b270 AP	464	if (userindex < 0) {
	465	BIO_printf(bio_err,
	466	"user \"%s\" does not exist, operation ignored.\n",
	467	user);
	468	errors++;
	469	} else {
	470
	471	char **row =
	472	sk_OPENSSL_PSTRING_value(db->db->data, userindex);
	473	char type = row[DB_srptype][0];
	474	if (type == 'v') {
	475	BIO_printf(bio_err,
	476	"user \"%s\" already updated, operation ignored.\n",
	477	user);
	478	errors++;
	479	} else {
	480	char *gNid;
	481
	482	if (row[DB_srptype][0] == 'V') {
	483	int user_gN;
	484	char **irow = NULL;
7e1b7485 RS	485	if (verbose)
	486	BIO_printf(bio_err,
	487	"Verifying password for user \"%s\"\n",
	488	user);
6e81b270 AP	489	if ((user_gN =
	490	get_index(db, row[DB_srpgN], DB_SRP_INDEX)) >= 0)
	491	irow =
	492	sk_OPENSSL_PSTRING_value(db->db->data,
	493	userindex);
	494
	495	if (!srp_verify_user
	496	(user, row[DB_srpverifier], row[DB_srpsalt],
	497	irow ? irow[DB_srpsalt] : row[DB_srpgN],
	498	irow ? irow[DB_srpverifier] : NULL, passin,
ecf3a1fb	499	verbose)) {
6e81b270 AP	500	BIO_printf(bio_err,
	501	"Invalid password for user \"%s\", operation abandoned.\n",
	502	user);
	503	errors++;
7e1b7485	504	goto end;
6e81b270 AP	505	}
6e81b270 AP	506	}
7e1b7485 RS	507	if (verbose)
	508	BIO_printf(bio_err, "Password for user \"%s\" ok.\n",
	509	user);
	510
	511	if (!
	512	(gNid =
	513	srp_create_user(user, &(row[DB_srpverifier]),
	514	&(row[DB_srpsalt]),
	515	gNrow ? gNrow[DB_srpsalt] : NULL,
	516	gNrow ? gNrow[DB_srpverifier] : NULL,
ecf3a1fb	517	passout, verbose))) {
6e81b270	518	BIO_printf(bio_err,
7e1b7485 RS	519	"Cannot create srp verifier for user \"%s\", operation abandoned.\n",
7e1b7485 RS	520	user);
6e81b270	521	errors++;
7e1b7485	522	goto end;
6e81b270 AP	523	}
	524
	525	row[DB_srptype][0] = 'v';
7644a9ae	526	row[DB_srpgN] = OPENSSL_strdup(gNid);
6e81b270	527
75ebbd9a RS	528	if (row[DB_srpid] == NULL
	529	\|\| row[DB_srpgN] == NULL
	530	\|\| row[DB_srptype] == NULL
	531	\|\| row[DB_srpverifier] == NULL
	532	\|\| row[DB_srpsalt] == NULL
6e81b270	533	\|\| (userinfo
7644a9ae	534	&& ((row[DB_srpinfo] = OPENSSL_strdup(userinfo))
75ebbd9a	535	== NULL)))
7e1b7485	536	goto end;
6e81b270 AP	537
	538	doupdatedb = 1;
	539	}
	540	}
7e1b7485	541	} else if (mode == OPT_DELETE) {
6e81b270 AP	542	if (userindex < 0) {
	543	BIO_printf(bio_err,
	544	"user \"%s\" does not exist, operation ignored. t\n",
	545	user);
	546	errors++;
	547	} else {
75ebbd9a	548	char **xpp = sk_OPENSSL_PSTRING_value(db->db->data, userindex);
6e81b270	549
75ebbd9a	550	BIO_printf(bio_err, "user \"%s\" revoked. t\n", user);
6e81b270	551	xpp[DB_srptype][0] = 'R';
6e81b270 AP	552	doupdatedb = 1;
	553	}
	554	}
c27363f5 RS	555	user = *argv++;
c27363f5 RS	556	if (user == NULL) {
5ec3210f DSC	557	/* no more processing in any mode if no users left */
5ec3210f DSC	558	break;
6e81b270 AP	559	}
	560	}
	561
7e1b7485 RS	562	if (verbose)
7e1b7485 RS	563	BIO_printf(bio_err, "User procession done.\n");
6e81b270 AP	564
	565	if (doupdatedb) {
	566	/* Lets check some fields */
	567	for (i = 0; i < sk_OPENSSL_PSTRING_num(db->db->data); i++) {
	568	pp = sk_OPENSSL_PSTRING_value(db->db->data, i);
	569
	570	if (pp[DB_srptype][0] == 'v') {
	571	pp[DB_srptype][0] = 'V';
ecf3a1fb	572	print_user(db, i, verbose);
6e81b270 AP	573	}
	574	}
	575
7e1b7485 RS	576	if (verbose)
7e1b7485 RS	577	BIO_printf(bio_err, "Trying to update srpvfile.\n");
dfd6211c	578	if (!save_index(srpvfile, "new", db))
7e1b7485	579	goto end;
6e81b270	580
7e1b7485 RS	581	if (verbose)
7e1b7485 RS	582	BIO_printf(bio_err, "Temporary srpvfile created.\n");
dfd6211c	583	if (!rotate_index(srpvfile, "new", "old"))
7e1b7485	584	goto end;
6e81b270	585
7e1b7485 RS	586	if (verbose)
7e1b7485 RS	587	BIO_printf(bio_err, "srpvfile updated.\n");
6e81b270 AP	588	}
	589
	590	ret = (errors != 0);
7e1b7485	591	end:
6e81b270	592	if (errors != 0)
7e1b7485 RS	593	if (verbose)
7e1b7485 RS	594	BIO_printf(bio_err, "User errors %d.\n", errors);
6e81b270	595
7e1b7485 RS	596	if (verbose)
7e1b7485 RS	597	BIO_printf(bio_err, "SRP terminating with code %d.\n", ret);
8bf78043	598
7b0ee135 MC	599	OPENSSL_free(passin);
7b0ee135 MC	600	OPENSSL_free(passout);
6e81b270 AP	601	if (ret)
6e81b270 AP	602	ERR_print_errors(bio_err);
25aaa98a RS	603	NCONF_free(conf);
25aaa98a RS	604	free_index(db);
dd1abd44	605	release_engine(e);
7e1b7485	606	return (ret);
6e81b270	607	}
edc032b5	608	#endif