diff options
Diffstat (limited to 'openssl-1.1.0h/apps/srp.c')
| -rw-r--r-- | openssl-1.1.0h/apps/srp.c | 613 |
1 files changed, 613 insertions, 0 deletions
diff --git a/openssl-1.1.0h/apps/srp.c b/openssl-1.1.0h/apps/srp.c new file mode 100644 index 0000000..0ead68e --- /dev/null +++ b/openssl-1.1.0h/apps/srp.c @@ -0,0 +1,613 @@ +/* + * 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" + +# define BASE_SECTION "srp" +# define CONFIG_FILE "openssl.cnf" + +# define ENV_RANDFILE "RANDFILE" + +# 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)) ) { + 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)) ) { + 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 +} OPTION_CHOICE; + +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"}, +# 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 *randfile = NULL, *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; + } + } + argc = opt_num_rest(); + argv = opt_rest(); + + if (srpvfile && configfile) { + 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 || passoutarg) && 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) { + if (!configfile) + 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; + } + + if (randfile == NULL) + randfile = NCONF_get_string(conf, BASE_SECTION, "RANDFILE"); + + 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 (randfile == NULL) + ERR_clear_error(); + else + app_RAND_load_file(randfile, 0); + + 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); + if (randfile) + app_RAND_write_file(randfile); + NCONF_free(conf); + free_index(db); + release_engine(e); + return (ret); +} +#endif |