static int SSLSRPServerParamCallback(SSL *s, int *ad, void *arg)
{
const char* userName = SSL_get_srp_username(s);
LOG(INFO) << "User " << userName;
const User* user = GetUser(userName);
if (!user)
{
LOG(ERROR) << "User " << userName << " doesn't exist";
*ad = SSL_AD_UNKNOWN_PSK_IDENTITY;
return SSL3_AL_FATAL;
}
SRP_gN *GN = SRP_get_default_gN(FLAGS_srp_default_gN.c_str());
if(GN == NULL)
{
*ad = SSL_AD_INTERNAL_ERROR;
return SSL3_AL_FATAL;
}
if (!SSL_set_srp_server_param(s, GN->N, GN->g, user->GetSalt(), user->GetVerifier(), NULL))
{
*ad = SSL_AD_INTERNAL_ERROR;
return SSL3_AL_FATAL;
}
return SSL_ERROR_NONE;
}
/* If the server just has the raw password, make up a verifier entry on the fly */
int SSL_set_srp_server_param_pw(SSL *s, const char *user, const char *pass, const char *grp)
{
SRP_gN *GN = SRP_get_default_gN(grp);
if(GN == NULL) return -1;
s->srp_ctx.N = BN_dup(GN->N);
s->srp_ctx.g = BN_dup(GN->g);
if(s->srp_ctx.v != NULL)
{
BN_clear_free(s->srp_ctx.v);
s->srp_ctx.v = NULL;
}
if(s->srp_ctx.s != NULL)
{
BN_clear_free(s->srp_ctx.s);
s->srp_ctx.s = NULL;
}
if(!SRP_create_verifier_BN(user, pass, &s->srp_ctx.s, &s->srp_ctx.v, GN->N, GN->g)) return -1;
return 1;
}
int MAIN(int argc, char **argv)
{
int add_user = 0;
int list_user= 0;
int delete_user= 0;
int modify_user= 0;
char * user = NULL;
char *passargin = NULL, *passargout = NULL;
char *passin = NULL, *passout = NULL;
char * gN = NULL;
int gNindex = -1;
char ** gNrow = NULL;
int maxgN = -1;
char * userinfo = NULL;
int badops=0;
int ret=1;
int errors=0;
int verbose=0;
int doupdatedb=0;
char *configfile=NULL;
char *dbfile=NULL;
CA_DB *db=NULL;
char **pp ;
int i;
long errorline = -1;
char *randfile=NULL;
#ifndef OPENSSL_NO_ENGINE
char *engine = NULL;
#endif
char *tofree=NULL;
DB_ATTR db_attr;
#ifdef EFENCE
EF_PROTECT_FREE=1;
EF_PROTECT_BELOW=1;
EF_ALIGNMENT=0;
#endif
apps_startup();
conf = NULL;
section = NULL;
if (bio_err == NULL)
if ((bio_err=BIO_new(BIO_s_file())) != NULL)
BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
argc--;
argv++;
while (argc >= 1 && badops == 0)
{
if (strcmp(*argv,"-verbose") == 0)
verbose++;
else if (strcmp(*argv,"-config") == 0)
{
if (--argc < 1) goto bad;
configfile= *(++argv);
}
else if (strcmp(*argv,"-name") == 0)
{
if (--argc < 1) goto bad;
section= *(++argv);
}
else if (strcmp(*argv,"-srpvfile") == 0)
{
if (--argc < 1) goto bad;
dbfile= *(++argv);
}
else if (strcmp(*argv,"-add") == 0)
add_user=1;
else if (strcmp(*argv,"-delete") == 0)
delete_user=1;
else if (strcmp(*argv,"-modify") == 0)
modify_user=1;
else if (strcmp(*argv,"-list") == 0)
list_user=1;
else if (strcmp(*argv,"-gn") == 0)
{
if (--argc < 1) goto bad;
gN= *(++argv);
}
else if (strcmp(*argv,"-userinfo") == 0)
{
if (--argc < 1) goto bad;
userinfo= *(++argv);
}
else if (strcmp(*argv,"-passin") == 0)
{
if (--argc < 1) goto bad;
passargin= *(++argv);
}
else if (strcmp(*argv,"-passout") == 0)
{
if (--argc < 1) goto bad;
passargout= *(++argv);
}
#ifndef OPENSSL_NO_ENGINE
else if (strcmp(*argv,"-engine") == 0)
{
if (--argc < 1) goto bad;
engine= *(++argv);
}
#endif
else if (**argv == '-')
{
bad:
BIO_printf(bio_err,"unknown option %s\n",*argv);
badops=1;
break;
}
else
break;
argc--;
argv++;
}
if (dbfile && configfile)
{
BIO_printf(bio_err,"-dbfile and -configfile cannot be specified together.\n");
badops = 1;
}
if (add_user+delete_user+modify_user+list_user != 1)
{
BIO_printf(bio_err,"Exactly one of the options -add, -delete, -modify -list must be specified.\n");
badops = 1;
}
if (delete_user+modify_user+delete_user== 1 && argc <= 0)
{
BIO_printf(bio_err,"Need at least one user for options -add, -delete, -modify. \n");
badops = 1;
}
if ((passin || passout) && argc != 1 )
{
BIO_printf(bio_err,"-passin, -passout arguments only valid with one user.\n");
badops = 1;
}
if (badops)
{
for (pp=srp_usage; (*pp != NULL); pp++)
BIO_printf(bio_err,"%s",*pp);
BIO_printf(bio_err," -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR);
BIO_printf(bio_err," load the file (or the files in the directory) into\n");
BIO_printf(bio_err," the random number generator\n");
goto err;
}
ERR_load_crypto_strings();
#ifndef OPENSSL_NO_ENGINE
setup_engine(bio_err, engine, 0);
#endif
if(!app_passwd(bio_err, passargin, passargout, &passin, &passout))
{
BIO_printf(bio_err, "Error getting passwords\n");
goto err;
}
if (!dbfile)
{
/*****************************************************************/
tofree=NULL;
if (configfile == NULL) configfile = getenv("OPENSSL_CONF");
if (configfile == NULL) configfile = getenv("SSLEAY_CONF");
if (configfile == NULL)
{
const char *s=X509_get_default_cert_area();
size_t len;
#ifdef OPENSSL_SYS_VMS
len = strlen(s)+sizeof(CONFIG_FILE);
tofree=OPENSSL_malloc(len);
strcpy(tofree,s);
#else
len = strlen(s)+sizeof(CONFIG_FILE)+1;
tofree=OPENSSL_malloc(len);
BUF_strlcpy(tofree,s,len);
BUF_strlcat(tofree,"/",len);
#endif
BUF_strlcat(tofree,CONFIG_FILE,len);
configfile=tofree;
}
VERBOSE BIO_printf(bio_err,"Using configuration from %s\n",configfile);
conf = NCONF_new(NULL);
if (NCONF_load(conf,configfile,&errorline) <= 0)
{
if (errorline <= 0)
BIO_printf(bio_err,"error loading the config file '%s'\n",
configfile);
else
BIO_printf(bio_err,"error on line %ld of config file '%s'\n"
,errorline,configfile);
goto err;
}
if(tofree)
{
OPENSSL_free(tofree);
tofree = NULL;
}
if (!load_config(bio_err, conf))
goto err;
/* Lets get the config section we are using */
if (section == NULL)
{
VERBOSE BIO_printf(bio_err,"trying to read " ENV_DEFAULT_SRP " in \" BASE_SECTION \"\n");
section=NCONF_get_string(conf,BASE_SECTION,ENV_DEFAULT_SRP);
if (section == NULL)
{
lookup_fail(BASE_SECTION,ENV_DEFAULT_SRP);
goto err;
}
}
if (randfile == NULL && conf)
randfile = NCONF_get_string(conf, BASE_SECTION, "RANDFILE");
VERBOSE BIO_printf(bio_err,"trying to read " ENV_DATABASE " in section \"%s\"\n",section);
if ((dbfile=NCONF_get_string(conf,section,ENV_DATABASE)) == NULL)
{
lookup_fail(section,ENV_DATABASE);
goto err;
}
}
if (randfile == NULL)
ERR_clear_error();
else
app_RAND_load_file(randfile, bio_err, 0);
VERBOSE BIO_printf(bio_err,"Trying to read SRP verifier file \"%s\"\n",dbfile);
db = load_index(dbfile, &db_attr);
if (db == NULL) goto err;
/* 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]))
gNindex = i;
print_index(db, bio_err, i, verbose > 1);
}
}
VERBOSE BIO_printf(bio_err, "Database initialised\n");
if (gNindex >= 0)
{
gNrow = sk_OPENSSL_PSTRING_value(db->db->data,gNindex);
print_entry(db, bio_err, 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 err;
}
else
{
VERBOSE BIO_printf(bio_err, "Database has no g N information.\n");
gNrow = NULL;
}
VVERBOSE BIO_printf(bio_err,"Starting user processing\n");
if (argc > 0)
user = *(argv++) ;
while (list_user || user)
{
int userindex = -1;
if (user)
VVERBOSE BIO_printf(bio_err, "Processing user \"%s\"\n", user);
if ((userindex = get_index(db, user, 'U')) >= 0)
{
print_user(db, bio_err, userindex, (verbose > 0) || list_user);
}
if (list_user)
{
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,bio_err, i, 1);
}
list_user = 0;
}
else if (userindex < 0)
{
BIO_printf(bio_err, "user \"%s\" does not exist, ignored. t\n",
user);
errors++;
}
}
else if (add_user)
{
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, bio_err,verbose)))
{
BIO_printf(bio_err, "Cannot create srp verifier for user \"%s\", operation abandoned .\n", user);
errors++;
goto err;
}
row[DB_srpid] = BUF_strdup(user);
row[DB_srptype] = BUF_strdup("v");
row[DB_srpgN] = BUF_strdup(gNid);
if (!row[DB_srpid] || !row[DB_srpgN] || !row[DB_srptype] || !row[DB_srpverifier] || !row[DB_srpsalt] ||
(userinfo && (!(row[DB_srpinfo] = BUF_strdup(userinfo)))) ||
!update_index(db, bio_err, row))
{
if (row[DB_srpid]) OPENSSL_free(row[DB_srpid]);
if (row[DB_srpgN]) OPENSSL_free(row[DB_srpgN]);
if (row[DB_srpinfo]) OPENSSL_free(row[DB_srpinfo]);
if (row[DB_srptype]) OPENSSL_free(row[DB_srptype]);
if (row[DB_srpverifier]) OPENSSL_free(row[DB_srpverifier]);
if (row[DB_srpsalt]) OPENSSL_free(row[DB_srpsalt]);
goto err;
}
doupdatedb = 1;
}
}
else if (modify_user)
{
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;
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 = (char **)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, bio_err, verbose))
{
BIO_printf(bio_err, "Invalid password for user \"%s\", operation abandoned.\n", user);
errors++;
goto err;
}
}
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, bio_err,verbose)))
{
BIO_printf(bio_err, "Cannot create srp verifier for user \"%s\", operation abandoned.\n", user);
errors++;
goto err;
}
row[DB_srptype][0] = 'v';
row[DB_srpgN] = BUF_strdup(gNid);
if (!row[DB_srpid] || !row[DB_srpgN] || !row[DB_srptype] || !row[DB_srpverifier] || !row[DB_srpsalt] ||
(userinfo && (!(row[DB_srpinfo] = BUF_strdup(userinfo)))))
goto err;
doupdatedb = 1;
}
}
}
else if (delete_user)
{
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;
}
}
if (--argc > 0)
user = *(argv++) ;
else
{
user = NULL;
list_user = 0;
}
}
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, bio_err, i, verbose);
}
}
VERBOSE BIO_printf(bio_err, "Trying to update srpvfile.\n");
if (!save_index(dbfile, "new", db)) goto err;
VERBOSE BIO_printf(bio_err, "Temporary srpvfile created.\n");
if (!rotate_index(dbfile, "new", "old")) goto err;
VERBOSE BIO_printf(bio_err, "srpvfile updated.\n");
}
ret = (errors != 0);
err:
if (errors != 0)
VERBOSE BIO_printf(bio_err,"User errors %d.\n",errors);
VERBOSE BIO_printf(bio_err,"SRP terminating with code %d.\n",ret);
if(tofree)
OPENSSL_free(tofree);
if (ret) ERR_print_errors(bio_err);
if (randfile) app_RAND_write_file(randfile, bio_err);
if (conf) NCONF_free(conf);
if (db) free_index(db);
OBJ_cleanup();
apps_shutdown();
OPENSSL_EXIT(ret);
}
static int run_srp(const char *username, const char *client_pass, const char *server_pass)
{
int ret=-1;
BIGNUM *s = NULL;
BIGNUM *v = NULL;
BIGNUM *a = NULL;
BIGNUM *b = NULL;
BIGNUM *u = NULL;
BIGNUM *x = NULL;
BIGNUM *Apub = NULL;
BIGNUM *Bpub = NULL;
BIGNUM *Kclient = NULL;
BIGNUM *Kserver = NULL;
unsigned char rand_tmp[RANDOM_SIZE];
/* use builtin 1024-bit params */
const SRP_gN *GN = SRP_get_default_gN("1024");
if(GN == NULL)
{
fprintf(stderr, "Failed to get SRP parameters\n");
return -1;
}
/* Set up server's password entry */
if(!SRP_create_verifier_BN(username, server_pass, &s, &v, GN->N, GN->g))
{
fprintf(stderr, "Failed to create SRP verifier\n");
return -1;
}
showbn("N", GN->N);
showbn("g", GN->g);
showbn("Salt", s);
showbn("Verifier", v);
/* Server random */
RAND_pseudo_bytes(rand_tmp, sizeof(rand_tmp));
b = BN_bin2bn(rand_tmp, sizeof(rand_tmp), NULL);
/* TODO - check b != 0 */
showbn("b", b);
/* Server's first message */
Bpub = SRP_Calc_B(b, GN->N, GN->g, v);
showbn("B", Bpub);
if(!SRP_Verify_B_mod_N(Bpub, GN->N))
{
fprintf(stderr, "Invalid B\n");
return -1;
}
/* Client random */
RAND_pseudo_bytes(rand_tmp, sizeof(rand_tmp));
a = BN_bin2bn(rand_tmp, sizeof(rand_tmp), NULL);
/* TODO - check a != 0 */
showbn("a", a);
/* Client's response */
Apub = SRP_Calc_A(a, GN->N, GN->g);
showbn("A", Apub);
if(!SRP_Verify_A_mod_N(Apub, GN->N))
{
fprintf(stderr, "Invalid A\n");
return -1;
}
/* Both sides calculate u */
u = SRP_Calc_u(Apub, Bpub, GN->N);
/* Client's key */
x = SRP_Calc_x(s, username, client_pass);
Kclient = SRP_Calc_client_key(GN->N, Bpub, GN->g, x, a, u);
showbn("Client's key", Kclient);
/* Server's key */
Kserver = SRP_Calc_server_key(Apub, v, u, b, GN->N);
showbn("Server's key", Kserver);
if(BN_cmp(Kclient, Kserver) == 0)
{
ret = 0;
}
else
{
fprintf(stderr, "Keys mismatch\n");
ret = 1;
}
BN_clear_free(Kclient);
BN_clear_free(Kserver);
BN_clear_free(x);
BN_free(u);
BN_free(Apub);
BN_clear_free(a);
BN_free(Bpub);
BN_clear_free(b);
BN_free(s);
BN_clear_free(v);
return ret;
}
/* SRP test vectors from RFC5054 */
static int run_srp_kat(void)
{
int ret = 0;
BIGNUM *s = NULL;
BIGNUM *v = NULL;
BIGNUM *a = NULL;
BIGNUM *b = NULL;
BIGNUM *u = NULL;
BIGNUM *x = NULL;
BIGNUM *Apub = NULL;
BIGNUM *Bpub = NULL;
BIGNUM *Kclient = NULL;
BIGNUM *Kserver = NULL;
/* use builtin 1024-bit params */
const SRP_gN *GN = SRP_get_default_gN("1024");
if (GN == NULL) {
fprintf(stderr, "Failed to get SRP parameters\n");
goto err;
}
BN_hex2bn(&s, "BEB25379D1A8581EB5A727673A2441EE");
/* Set up server's password entry */
if (!SRP_create_verifier_BN("alice", "password123", &s, &v, GN->N,
GN->g)) {
fprintf(stderr, "Failed to create SRP verifier\n");
goto err;
}
if (!check_bn("v", v,
"7E273DE8696FFC4F4E337D05B4B375BEB0DDE1569E8FA00A9886D812"
"9BADA1F1822223CA1A605B530E379BA4729FDC59F105B4787E5186F5"
"C671085A1447B52A48CF1970B4FB6F8400BBF4CEBFBB168152E08AB5"
"EA53D15C1AFF87B2B9DA6E04E058AD51CC72BFC9033B564E26480D78"
"E955A5E29E7AB245DB2BE315E2099AFB"))
goto err;
/* Server random */
BN_hex2bn(&b, "E487CB59D31AC550471E81F00F6928E01DDA08E974A004F49E61F5D1"
"05284D20");
/* Server's first message */
Bpub = SRP_Calc_B(b, GN->N, GN->g, v);
if (!SRP_Verify_B_mod_N(Bpub, GN->N)) {
fprintf(stderr, "Invalid B\n");
goto err;
}
if (!check_bn("B", Bpub,
"BD0C61512C692C0CB6D041FA01BB152D4916A1E77AF46AE105393011"
"BAF38964DC46A0670DD125B95A981652236F99D9B681CBF87837EC99"
"6C6DA04453728610D0C6DDB58B318885D7D82C7F8DEB75CE7BD4FBAA"
"37089E6F9C6059F388838E7A00030B331EB76840910440B1B27AAEAE"
"EB4012B7D7665238A8E3FB004B117B58"))
goto err;
/* Client random */
BN_hex2bn(&a, "60975527035CF2AD1989806F0407210BC81EDC04E2762A56AFD529DD"
"DA2D4393");
/* Client's response */
Apub = SRP_Calc_A(a, GN->N, GN->g);
if (!SRP_Verify_A_mod_N(Apub, GN->N)) {
fprintf(stderr, "Invalid A\n");
return -1;
}
if (!check_bn("A", Apub,
"61D5E490F6F1B79547B0704C436F523DD0E560F0C64115BB72557EC4"
"4352E8903211C04692272D8B2D1A5358A2CF1B6E0BFCF99F921530EC"
"8E39356179EAE45E42BA92AEACED825171E1E8B9AF6D9C03E1327F44"
"BE087EF06530E69F66615261EEF54073CA11CF5858F0EDFDFE15EFEA"
"B349EF5D76988A3672FAC47B0769447B"))
goto err;
/* Both sides calculate u */
u = SRP_Calc_u(Apub, Bpub, GN->N);
if (!check_bn("u", u, "CE38B9593487DA98554ED47D70A7AE5F462EF019"))
goto err;
/* Client's key */
x = SRP_Calc_x(s, "alice", "password123");
Kclient = SRP_Calc_client_key(GN->N, Bpub, GN->g, x, a, u);
if (!check_bn("Client's key", Kclient,
"B0DC82BABCF30674AE450C0287745E7990A3381F63B387AAF271A10D"
"233861E359B48220F7C4693C9AE12B0A6F67809F0876E2D013800D6C"
"41BB59B6D5979B5C00A172B4A2A5903A0BDCAF8A709585EB2AFAFA8F"
"3499B200210DCC1F10EB33943CD67FC88A2F39A4BE5BEC4EC0A3212D"
"C346D7E474B29EDE8A469FFECA686E5A"))
goto err;
/* Server's key */
Kserver = SRP_Calc_server_key(Apub, v, u, b, GN->N);
if (!check_bn("Server's key", Kserver,
"B0DC82BABCF30674AE450C0287745E7990A3381F63B387AAF271A10D"
"233861E359B48220F7C4693C9AE12B0A6F67809F0876E2D013800D6C"
"41BB59B6D5979B5C00A172B4A2A5903A0BDCAF8A709585EB2AFAFA8F"
"3499B200210DCC1F10EB33943CD67FC88A2F39A4BE5BEC4EC0A3212D"
"C346D7E474B29EDE8A469FFECA686E5A"))
goto err;
ret = 1;
err:
BN_clear_free(Kclient);
BN_clear_free(Kserver);
BN_clear_free(x);
BN_free(u);
BN_free(Apub);
BN_clear_free(a);
BN_free(Bpub);
BN_clear_free(b);
BN_free(s);
BN_clear_free(v);
return ret;
}
int srp_main(int argc, char **argv)
{
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:
(void)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)
&& argc < 1) {
BIO_printf(bio_err,
"Need at least one user for options -add, -delete, -modify. \n");
goto opthelp;
}
if ((passin || passout) && 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");
if (argc > 0)
user = *(argv++);
while (mode == OPT_LIST || user) {
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;
}
}
if (--argc > 0)
user = *(argv++);
else {
user = NULL;
}
}
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);
return (ret);
}
static int run_srp(const char *username, const char *client_pass,
const char *server_pass)
{
int ret = 0;
BIGNUM *s = NULL;
BIGNUM *v = NULL;
BIGNUM *a = NULL;
BIGNUM *b = NULL;
BIGNUM *u = NULL;
BIGNUM *x = NULL;
BIGNUM *Apub = NULL;
BIGNUM *Bpub = NULL;
BIGNUM *Kclient = NULL;
BIGNUM *Kserver = NULL;
unsigned char rand_tmp[RANDOM_SIZE];
/* use builtin 1024-bit params */
const SRP_gN *GN;
if (!TEST_ptr(GN = SRP_get_default_gN("1024")))
return 0;
/* Set up server's password entry */
if (!TEST_true(SRP_create_verifier_BN(username, server_pass,
&s, &v, GN->N, GN->g)))
goto end;
showbn("N", GN->N);
showbn("g", GN->g);
showbn("Salt", s);
showbn("Verifier", v);
/* Server random */
RAND_bytes(rand_tmp, sizeof(rand_tmp));
b = BN_bin2bn(rand_tmp, sizeof(rand_tmp), NULL);
if (!TEST_BN_ne_zero(b))
goto end;
showbn("b", b);
/* Server's first message */
Bpub = SRP_Calc_B(b, GN->N, GN->g, v);
showbn("B", Bpub);
if (!TEST_true(SRP_Verify_B_mod_N(Bpub, GN->N)))
goto end;
/* Client random */
RAND_bytes(rand_tmp, sizeof(rand_tmp));
a = BN_bin2bn(rand_tmp, sizeof(rand_tmp), NULL);
if (!TEST_BN_ne_zero(a))
goto end;
showbn("a", a);
/* Client's response */
Apub = SRP_Calc_A(a, GN->N, GN->g);
showbn("A", Apub);
if (!TEST_true(SRP_Verify_A_mod_N(Apub, GN->N)))
goto end;
/* Both sides calculate u */
u = SRP_Calc_u(Apub, Bpub, GN->N);
/* Client's key */
x = SRP_Calc_x(s, username, client_pass);
Kclient = SRP_Calc_client_key(GN->N, Bpub, GN->g, x, a, u);
showbn("Client's key", Kclient);
/* Server's key */
Kserver = SRP_Calc_server_key(Apub, v, u, b, GN->N);
showbn("Server's key", Kserver);
if (!TEST_BN_eq(Kclient, Kserver))
goto end;
ret = 1;
end:
BN_clear_free(Kclient);
BN_clear_free(Kserver);
BN_clear_free(x);
BN_free(u);
BN_free(Apub);
BN_clear_free(a);
BN_free(Bpub);
BN_clear_free(b);
BN_free(s);
BN_clear_free(v);
return ret;
}