void mag_check_session(request_rec *req, struct mag_config *cfg, struct mag_conn **conn) { struct mag_conn *mc; apr_status_t rc; session_rec *sess = NULL; const char *sessval = NULL; int declen; struct databuf ctxbuf = { 0 }; struct databuf cipherbuf = { 0 }; char *next, *last; time_t expiration; rc = mag_session_load(req, &sess); if (rc != OK || sess == NULL) { ap_log_rerror(APLOG_MARK, APLOG_INFO|APLOG_NOERRNO, 0, req, "Sessions not available, no cookies!"); return; } mc = *conn; if (!mc) { mc = apr_pcalloc(req->pool, sizeof(struct mag_conn)); if (!mc) return; mc->parent = req->pool; *conn = mc; } rc = mag_session_get(req, sess, MAG_BEARER_KEY, &sessval); if (rc != OK) { ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, 0, req, "Failed to get session data!"); return; } if (!sessval) { /* no session established, just return */ return; } if (!cfg->mag_skey) { ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, req, "Session key not available, no cookies!"); /* we do not have a key, just return */ return; } /* decode it */ declen = apr_base64_decode_len(sessval); cipherbuf.value = apr_palloc(req->pool, declen); if (!cipherbuf.value) return; cipherbuf.length = (int)apr_base64_decode((char *)cipherbuf.value, sessval); rc = UNSEAL_BUFFER(req->pool, cfg->mag_skey, &cipherbuf, &ctxbuf); if (rc != OK) { ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, 0, req, "Failed to unseal session data!"); return; } /* get time */ next = apr_strtok((char *)ctxbuf.value, ":", &last); expiration = (time_t)apr_atoi64(next); if (expiration < time(NULL)) { /* credentials fully expired, return nothing */ return; } /* user name is next */ next = apr_strtok(NULL, ":", &last); mc->user_name = apr_pstrdup(mc->parent, next); if (!mc->user_name) return; /* gssapi name (often a principal) is last. * (because it may contain the separator as a valid char we * just read last as is, without further tokenizing */ mc->gss_name = apr_pstrdup(mc->parent, last); if (!mc->gss_name) return; /* OK we have a valid token */ mc->established = true; }
void mag_check_session(struct mag_req_cfg *cfg, struct mag_conn **conn) { request_rec *req = cfg->req; struct mag_conn *mc; apr_status_t rc; session_rec *sess = NULL; const char *sessval = NULL; int declen; struct databuf ctxbuf = { 0 }; struct databuf cipherbuf = { 0 }; GSSSessionData_t *gsessdata; time_t expiration; rc = mag_session_load(req, &sess); if (rc != OK || sess == NULL) { ap_log_rerror(APLOG_MARK, APLOG_INFO|APLOG_NOERRNO, 0, req, "Sessions not available, no cookies!"); return; } mc = *conn; if (!mc) { *conn = mc = mag_new_conn_ctx(req->pool); mc->is_preserved = true; } rc = mag_session_get(req, sess, MAG_BEARER_KEY, &sessval); if (rc != OK) { ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, 0, req, "Failed to get session data!"); return; } if (!sessval) { /* no session established, just return */ return; } if (!cfg->mag_skey) { ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, req, "Session key not available, no cookies!"); /* we do not have a key, just return */ return; } /* decode it */ declen = apr_base64_decode_len(sessval); cipherbuf.value = apr_palloc(req->pool, declen); if (!cipherbuf.value) return; cipherbuf.length = (int)apr_base64_decode((char *)cipherbuf.value, sessval); rc = UNSEAL_BUFFER(req->pool, cfg->mag_skey, &cipherbuf, &ctxbuf); if (rc != OK) { ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, 0, req, "Failed to unseal session data!"); return; } gsessdata = decode_GSSSessionData(ctxbuf.value, ctxbuf.length); if (!gsessdata) { ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, 0, req, "Failed to unpack session data!"); return; } /* booleans */ if (gsessdata->established != 0) mc->established = true; if (gsessdata->delegated != 0) mc->delegated = true; /* get time */ expiration = gsessdata->expiration; if (expiration < time(NULL)) { /* credentials fully expired, return nothing */ mc->established = false; goto done; } /* user name */ mc->user_name = apr_pstrndup(mc->pool, (char *)gsessdata->username.buf, gsessdata->username.size); if (!mc->user_name) goto done; /* gssapi name */ mc->gss_name = apr_pstrndup(mc->pool, (char *)gsessdata->gssname.buf, gsessdata->gssname.size); if (!mc->gss_name) goto done; mc->basic_hash.length = gsessdata->basichash.size; mc->basic_hash.value = apr_palloc(mc->pool, mc->basic_hash.length); memcpy(mc->basic_hash.value, gsessdata->basichash.buf, gsessdata->basichash.size); /* ccname */ mc->ccname = apr_pstrndup(mc->pool, (char *)gsessdata->ccname.buf, gsessdata->ccname.size); if (!mc->ccname) goto done; /* OK we have a valid token */ mc->established = true; done: ASN_STRUCT_FREE(asn_DEF_GSSSessionData, gsessdata); }