X-Git-Url: http://www.project-moonshot.org/gitweb/?p=trust_router.git;a=blobdiff_plain;f=common%2Ftr_filter_encoders.c;fp=common%2Ftr_filter_encoders.c;h=a69685da42e1e222eb9c7e9864cb1fb5061358e2;hp=0000000000000000000000000000000000000000;hb=6f65c9cce86719147d0b4dcc9823b25443c2d185;hpb=eaa1a8ceed54fbfadc2638cf383aaa12ab446a57 diff --git a/common/tr_filter_encoders.c b/common/tr_filter_encoders.c new file mode 100644 index 0000000..a69685d --- /dev/null +++ b/common/tr_filter_encoders.c @@ -0,0 +1,243 @@ +/* + * Copyright (c) 2018 JANET(UK) + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * 3. Neither the name of JANET(UK) nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, + * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED + * OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#include +#include + +#include +#include +#include + +typedef json_t *(ITEM_ENCODER_FUNC)(void *); + +enum array_type { + ARRAY_TYPE_FSPEC, + ARRAY_TYPE_CONSTRAINT +}; +/** + * Make an array of matches from a TR_FSPEC or TR_CONSTRAINT + * + * @param obj + * @param type + * @return + */ +static json_t *tr_names_to_json_array(void *obj, enum array_type type) +{ + json_t *jarray = json_array(); + json_t *retval = NULL; + TR_FSPEC_ITER fspec_iter = {0}; + TR_CONSTRAINT_ITER cons_iter = {0}; + TR_NAME *this_match = NULL; + + if (jarray == NULL) + goto cleanup; + + switch(type) { + case ARRAY_TYPE_FSPEC: + this_match = tr_fspec_iter_first(&fspec_iter, (TR_FSPEC *)obj); + break; + + case ARRAY_TYPE_CONSTRAINT: + this_match = tr_constraint_iter_first(&cons_iter, (TR_CONSTRAINT *)obj); + break; + } + while(this_match) { + ARRAY_APPEND_OR_FAIL(jarray, tr_name_to_json_string(this_match)); + switch(type) { + case ARRAY_TYPE_FSPEC: + this_match = tr_fspec_iter_next(&fspec_iter); + break; + + case ARRAY_TYPE_CONSTRAINT: + this_match = tr_constraint_iter_next(&cons_iter); + break; + } + } + /* success */ + retval = jarray; + json_incref(retval); + +cleanup: + if (jarray) + json_decref(jarray); + + return retval; +} + +static json_t *tr_fspec_to_json(TR_FSPEC *fspec) +{ + json_t *fspec_json = NULL; + json_t *retval = NULL; + + fspec_json = json_object(); + if (fspec_json == NULL) + goto cleanup; + + OBJECT_SET_OR_FAIL(fspec_json, "field", + tr_name_to_json_string(fspec->field)); + OBJECT_SET_OR_FAIL(fspec_json, "matches", + tr_names_to_json_array(fspec, ARRAY_TYPE_FSPEC)); + + /* succeeded - set the return value and increment the reference count */ + retval = fspec_json; + json_incref(retval); + +cleanup: + if (fspec_json) + json_decref(fspec_json); + return retval; +} + +static json_t *tr_fspecs_to_json_array(TR_FLINE *fline) +{ + json_t *jarray = json_array(); + json_t *retval = NULL; + TR_FLINE_ITER *iter = tr_fline_iter_new(NULL); + TR_FSPEC *this_fspec = NULL; + + if ((jarray == NULL) || (iter == NULL)) + goto cleanup; + + for (this_fspec = tr_fline_iter_first(iter, fline); + this_fspec != NULL; + this_fspec = tr_fline_iter_next(iter)) { + ARRAY_APPEND_OR_FAIL(jarray, tr_fspec_to_json(this_fspec)); + } + /* success */ + retval = jarray; + json_incref(retval); + +cleanup: + if (jarray) + json_decref(jarray); + if (iter) + tr_fline_iter_free(iter); + + return retval; +} + +static json_t *tr_fline_to_json(TR_FLINE *fline) +{ + json_t *fline_json = NULL; + json_t *retval = NULL; + + fline_json = json_object(); + if (fline_json == NULL) + goto cleanup; + + OBJECT_SET_OR_FAIL(fline_json, "action", + json_string( (fline->action == TR_FILTER_ACTION_ACCEPT) ? "accept" : "reject")); + OBJECT_SET_OR_FAIL(fline_json, "specs", + tr_fspecs_to_json_array(fline)); + if (fline->realm_cons) { + OBJECT_SET_OR_FAIL(fline_json, "realm_constraints", + tr_names_to_json_array(fline->realm_cons, ARRAY_TYPE_CONSTRAINT)); + } + if (fline->domain_cons) { + OBJECT_SET_OR_FAIL(fline_json, "domain_constraints", + tr_names_to_json_array(fline->domain_cons, ARRAY_TYPE_CONSTRAINT)); + } + + /* succeeded - set the return value and increment the reference count */ + retval = fline_json; + json_incref(retval); + +cleanup: + if (fline_json) + json_decref(fline_json); + return retval; +} + +static json_t *tr_flines_to_json_array(TR_FILTER *filt) +{ + json_t *jarray = json_array(); + json_t *retval = NULL; + TR_FILTER_ITER *iter = tr_filter_iter_new(NULL); + TR_FLINE *this_fline = NULL; + + if ((jarray == NULL) || (iter == NULL)) + goto cleanup; + + for(this_fline = tr_filter_iter_first(iter, filt); + this_fline != NULL; + this_fline = tr_filter_iter_next(iter)) { + ARRAY_APPEND_OR_FAIL(jarray, tr_fline_to_json(this_fline)); + } + /* success */ + retval = jarray; + json_incref(retval); + +cleanup: + if (jarray) + json_decref(jarray); + if (iter) + tr_filter_iter_free(iter); + + return retval; +} +json_t *tr_filter_set_to_json(TR_FILTER_SET *filter_set) +{ + json_t *fset_json = NULL; + json_t *retval = NULL; + TR_FILTER *filt = NULL; + TR_FILTER_TYPE *filt_type = NULL; + TR_FILTER_TYPE types[] = { + TR_FILTER_TYPE_TID_INBOUND, + TR_FILTER_TYPE_TRP_INBOUND, + TR_FILTER_TYPE_TRP_OUTBOUND, + TR_FILTER_TYPE_UNKNOWN /* list terminator */ + }; + + fset_json = json_object(); + if (fset_json == NULL) + goto cleanup; + + for (filt_type = types; *filt_type != TR_FILTER_TYPE_UNKNOWN; filt_type++) { + filt = tr_filter_set_get(filter_set, *filt_type); + if (filt) { + OBJECT_SET_OR_FAIL(fset_json, tr_filter_type_to_string(*filt_type), + tr_flines_to_json_array(filt)); + } + } + + /* succeeded - set the return value and increment the reference count */ + retval = fset_json; + json_incref(retval); + +cleanup: + if (fset_json) + json_decref(fset_json); + return retval; +} +