*/
#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <talloc.h>
+#include <sqlite3.h>
-#include <tpq.h>
+#include <tr_debug.h>
+#include <tid_internal.h>
+#include <trust_router/tr_constraint.h>
+#include <trust_router/tr_dh.h>
+#include <openssl/rand.h>
-int tpqs_req_handler (TPQS_INSTANCE * tpqs,
- TPQ_REQ *req,
- TPQ_RESP *resp,
- void *cookie)
+static sqlite3 *db = NULL;
+static sqlite3_stmt *insert_stmt = NULL;
+static sqlite3_stmt *authorization_insert = NULL;
+
+static int create_key_id(char *out_id, size_t len)
{
- printf("Request received! Realm = %s, COI = %s\n", req->realm->buf, req->coi->buf);
- if (tpqs)
- tpqs->req_count++;
+ unsigned char rand_buf[32];
+ size_t bin_len;
+ if (len <8)
+ return -1;
+ strncpy(out_id, "key-", len);
+ len -= 4;
+ out_id += 4;
+ if (sizeof(rand_buf)*2+1 < len)
+ len = sizeof(rand_buf)*2 + 1;
+ bin_len = (len-1)/2;
+ if (-1 == RAND_pseudo_bytes(rand_buf, bin_len))
+ return -1;
+ tr_bin_to_hex(rand_buf, bin_len, out_id, len);
+ out_id[bin_len*2] = '\0';
+ return 0;
+}
- if ((NULL == (resp->realm = tr_dup_name(req->realm))) ||
- (NULL == (resp->coi = tr_dup_name(req->coi)))) {
- printf ("Error in tpq_dup_name, not responding.\n");
- return 1;
+static int sqlify_wc(
+ TID_REQ *req,
+ const char **wc,
+ size_t len,
+ char **error)
+{
+ size_t lc;
+ *error = NULL;
+ for (lc = 0; lc < len; lc++) {
+ if (strchr(wc[lc], '%')) {
+ *error = talloc_asprintf( req, "Constraint match `%s' is not appropriate for SQL",
+ wc[lc]);
+ return -1;
+ }
+ if ('*' ==wc[lc][0]) {
+ char *s;
+ s = talloc_strdup(req, wc[lc]);
+ s[0] = '%';
+ wc[lc] = s;
+ }
}
+ return 0;
+}
+
+
+static int handle_authorizations(TID_REQ *req, const unsigned char *dh_hash,
+ size_t hash_len)
+{
+ TR_CONSTRAINT_SET *intersected = NULL;
+ const char **domain_wc, **realm_wc;
+ size_t domain_len, realm_len;
+ size_t domain_index, realm_index;
+ char *error;
+ int sqlite3_result;
+
+ if (!req->cons) {
+ tr_debug("Request has no constraints, so no authorizations.\n");
+ return 0;
+ }
+ intersected = tr_constraint_set_intersect(req, req->cons);
+ if (!intersected)
+ return -1;
+ if (0 != tr_constraint_set_get_match_strings(req,
+ intersected, "domain",
+ &domain_wc, &domain_len))
+ return -1;
+ if (0 != tr_constraint_set_get_match_strings(req,
+ intersected, "realm",
+ &realm_wc, &realm_len))
+ return -1;
+ tr_debug(" %u domain constraint matches and %u realm constraint matches\n",
+ (unsigned) domain_len, (unsigned) realm_len);
+ if (0 != sqlify_wc(req, domain_wc, domain_len, &error)) {
+ tr_debug("Processing domain constraints: %s\n", error);
+ return -1;
+ }else if (0 != sqlify_wc(req, realm_wc, realm_len, &error)) {
+ tr_debug("Processing realm constraints: %s\n", error);
+ return -1;
+ }
+ if (!authorization_insert) {
+ tr_debug( " No database, no authorizations inserted\n");
+ return 0;
+ }
+ for (domain_index = 0; domain_index < domain_len; domain_index++)
+ for (realm_index = 0; realm_index < realm_len; realm_index++) {
+ TR_NAME *community = req->orig_coi;
+ if (!community)
+ community = req->comm;
+ sqlite3_bind_blob(authorization_insert, 1, dh_hash, hash_len, SQLITE_TRANSIENT);
+ sqlite3_bind_text(authorization_insert, 2, community->buf, community->len, SQLITE_TRANSIENT);
+ sqlite3_bind_text(authorization_insert, 3, realm_wc[realm_index], -1, SQLITE_TRANSIENT);
+ sqlite3_bind_text(authorization_insert, 4, domain_wc[domain_index], -1, SQLITE_TRANSIENT);
+ sqlite3_bind_text(authorization_insert, 5, req->comm->buf, req->comm->len, SQLITE_TRANSIENT);
+ sqlite3_result = sqlite3_step(authorization_insert);
+ if (SQLITE_DONE != sqlite3_result)
+ printf("sqlite3: failed to write to database\n");
+ sqlite3_reset(authorization_insert);
+ }
return 0;
}
+static int tids_req_handler (TIDS_INSTANCE *tids,
+ TID_REQ *req,
+ TID_RESP *resp,
+ void *cookie)
+{
+ unsigned char *s_keybuf = NULL;
+ int s_keylen = 0;
+ char key_id[12];
+ unsigned char *pub_digest;
+ size_t pub_digest_len;
+
+
+ fprintf(stdout, "tids_req_handler: Request received! target_realm = %s, community = %s\n", req->realm->buf, req->comm->buf);
+ if (tids)
+ tids->req_count++;
+
+ if (!(resp) || !resp) {
+ fprintf(stderr, "tids_req_handler: No response structure.\n");
+ return -1;
+ }
+
+ /* Allocate a new server block */
+ if (NULL == (resp->servers = malloc(sizeof(TID_SRVR_BLK)))){
+ fprintf(stderr, "tids_req_handler(): malloc failed.\n");
+ return -1;
+ }
+ memset(resp->servers, 0, sizeof(TID_SRVR_BLK));
+ resp->num_servers = 1;
+
+ /* TBD -- Set up the server IP Address */
+
+ if (!(req) || !(req->tidc_dh)) {
+ fprintf(stderr, "tids_req_handler(): No client DH info.\n");
+ return -1;
+ }
+
+ if ((!req->tidc_dh->p) || (!req->tidc_dh->g)) {
+ fprintf(stderr, "tids_req_handler(): NULL dh values.\n");
+ return -1;
+ }
+
+ /* Generate the server DH block based on the client DH block */
+ // fprintf(stderr, "Generating the server DH block.\n");
+ // fprintf(stderr, "...from client DH block, dh_g = %s, dh_p = %s.\n", BN_bn2hex(req->tidc_dh->g), BN_bn2hex(req->tidc_dh->p));
+
+ if (NULL == (resp->servers->aaa_server_dh = tr_create_matching_dh(NULL, 0, req->tidc_dh))) {
+ fprintf(stderr, "tids_req_handler(): Can't create server DH params.\n");
+ return -1;
+ }
+
+ if (0 == inet_aton(tids->ipaddr, &(resp->servers->aaa_server_addr))) {
+ fprintf(stderr, "tids_req_handler(): inet_aton() failed.\n");
+ return -1;
+ }
+
+ /* Set the key name */
+ if (-1 == create_key_id(key_id, sizeof(key_id)))
+ return -1;
+ resp->servers->key_name = tr_new_name(key_id);
+
+ /* Generate the server key */
+ // fprintf(stderr, "Generating the server key.\n");
+
+ if (0 > (s_keylen = tr_compute_dh_key(&s_keybuf,
+ req->tidc_dh->pub_key,
+ resp->servers->aaa_server_dh))) {
+ fprintf(stderr, "tids_req_handler(): Key computation failed.");
+ return -1;
+ }
+ if (0 != tr_dh_pub_hash(req,
+ &pub_digest, &pub_digest_len)) {
+ tr_debug("Unable to digest client public key\n");
+ return -1;
+ }
+ if (0 != handle_authorizations(req, pub_digest, pub_digest_len))
+ return -1;
+ if (NULL != insert_stmt) {
+ int sqlite3_result;
+ sqlite3_bind_text(insert_stmt, 1, key_id, -1, SQLITE_TRANSIENT);
+ sqlite3_bind_blob(insert_stmt, 2, s_keybuf, s_keylen, SQLITE_TRANSIENT);
+ sqlite3_bind_blob(insert_stmt, 3, pub_digest, pub_digest_len, SQLITE_TRANSIENT);
+ sqlite3_result = sqlite3_step(insert_stmt);
+ if (SQLITE_DONE != sqlite3_result)
+ printf("sqlite3: failed to write to database\n");
+ sqlite3_reset(insert_stmt);
+ }
+
+ /* Print out the key. */
+ // fprintf(stderr, "tids_req_handler(): Server Key Generated (len = %d):\n", s_keylen);
+ // for (i = 0; i < s_keylen; i++) {
+ // fprintf(stderr, "%x", s_keybuf[i]);
+ // }
+ // fprintf(stderr, "\n");
+
+ return s_keylen;
+}
+static int auth_handler(gss_name_t gss_name, TR_NAME *client,
+ void *expected_client)
+{
+ TR_NAME *expected_client_trname = (TR_NAME*) expected_client;
+ return tr_name_cmp(client, expected_client_trname);
+}
+
+
int main (int argc,
const char *argv[])
{
- static TPQS_INSTANCE *tpqs;
+ TIDS_INSTANCE *tids;
int rc = 0;
+ char *ipaddr = NULL;
+ const char *hostname = NULL;
+ TR_NAME *gssname = NULL;
+ talloc_set_log_stderr();
/* Parse command-line arguments */
- if (argc != 1)
- printf("Unexpected arguments, ignored.\n");
+ if (argc != 5) {
+ fprintf(stdout, "Usage: %s <ip-address> <gss-name> <hostname> <database-name>\n", argv[0]);
+ exit(1);
+ }
+ ipaddr = (char *)argv[1];
+ gssname = tr_new_name((char *) argv[2]);
+ hostname = argv[3];
+ if (SQLITE_OK != sqlite3_open(argv[4], &db)) {
+ fprintf(stdout, "Error opening database %s\n", argv[4]);
+ exit(1);
+ }
+ sqlite3_prepare_v2(db, "insert into psk_keys (keyid, key, client_dh_pub) values(?, ?, ?)",
+ -1, &insert_stmt, NULL);
+ sqlite3_prepare_v2(db, "insert into authorizations (client_dh_pub, coi, acceptor_realm, hostname, apc) values(?, ?, ?, ?, ?)",
+ -1, &authorization_insert, NULL);
- /* Create a TPQ server instance */
- if (NULL == (tpqs = tpqs_create())) {
- printf("Error in tpqs_create(). Exiting.\n");
+ /* Create a TID server instance */
+ if (NULL == (tids = tids_create())) {
+ fprintf(stdout, "Unable to create TIDS instance, exiting.\n");
return 1;
}
+ tids->ipaddr = ipaddr;
+
/* Start-up the server, won't return unless there is an error. */
- rc = tpqs_start(tpqs, &tpqs_req_handler , NULL);
+ rc = tids_start(tids, &tids_req_handler , auth_handler, hostname, TID_PORT, gssname);
- printf("Error in tpqs_start(), rc = %d. Exiting.\n");
+ fprintf(stdout, "Error in tids_start(), rc = %d. Exiting.\n", rc);
- /* Clean-up the TPQ server instance */
- tpqs_destroy(tpqs);
+ /* Clean-up the TID server instance */
+ tids_destroy(tids);
return 1;
}
projects / trust_router.git / blobdiff