diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/string.c | 1 | ||||
| -rw-r--r-- | src/validate.c | 880 |
2 files changed, 881 insertions, 0 deletions
diff --git a/src/string.c b/src/string.c index 4f308cf6..dec35b52 100644 --- a/src/string.c +++ b/src/string.c @@ -43,6 +43,7 @@ serd_strerror(SerdStatus status) case SERD_ERR_BAD_CURIE: return "Invalid CURIE"; case SERD_ERR_INTERNAL: return "Internal error"; case SERD_ERR_OVERFLOW: return "Stack overflow"; + case SERD_ERR_INVALID: return "Invalid data"; default: break; } return "Unknown error"; // never reached diff --git a/src/validate.c b/src/validate.c new file mode 100644 index 00000000..756803fa --- /dev/null +++ b/src/validate.c @@ -0,0 +1,880 @@ +/* + Copyright 2012-2020 David Robillard <http://drobilla.net> + + Permission to use, copy, modify, and/or distribute this software for any + purpose with or without fee is hereby granted, provided that the above + copyright notice and this permission notice appear in all copies. + + THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. +*/ + +#include "serd_config.h" + +#include "model.h" +#include "serd/serd.h" +#include "world.h" + +#include <stdarg.h> +#include <stdbool.h> +#include <stdint.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#ifdef HAVE_PCRE +#include <pcre.h> +#endif + +#define NS_owl "http://www.w3.org/2002/07/owl#" +#define NS_rdf "http://www.w3.org/1999/02/22-rdf-syntax-ns#" +#define NS_rdfs "http://www.w3.org/2000/01/rdf-schema#" +#define NS_xsd "http://www.w3.org/2001/XMLSchema#" + +#define VERRORF(ctx, statement, fmt, ...) \ + report(ctx, statement, SERD_LOG_LEVEL_ERR, fmt, __VA_ARGS__); + +#define VERROR(ctx, statement, fmt) \ + report(ctx, statement, SERD_LOG_LEVEL_ERR, fmt); + +#define VWARNF(ctx, statement, fmt, ...) \ + report(ctx, statement, SERD_LOG_LEVEL_WARNING, fmt, __VA_ARGS__); + +#define VNOTEF(ctx, statement, fmt, ...) \ + report(ctx, statement, SERD_LOG_LEVEL_NOTICE, fmt, __VA_ARGS__); + +#define VNOTE(ctx, statement, fmt) \ + report(ctx, statement, SERD_LOG_LEVEL_NOTICE, fmt); + +#define SERD_FOREACH(name, range) \ + for (const SerdStatement* (name) = NULL; \ + !serd_range_empty(range) && ((name) = serd_range_front(range)); \ + serd_range_next(range)) + +typedef struct +{ + SerdNode* owl_Class; + SerdNode* owl_DatatypeProperty; + SerdNode* owl_FunctionalProperty; + SerdNode* owl_InverseFunctionalProperty; + SerdNode* owl_ObjectProperty; + SerdNode* owl_Restriction; + SerdNode* owl_Thing; + SerdNode* owl_allValuesFrom; + SerdNode* owl_cardinality; + SerdNode* owl_equivalentClass; + SerdNode* owl_maxCardinality; + SerdNode* owl_minCardinality; + SerdNode* owl_onDatatype; + SerdNode* owl_onProperty; + SerdNode* owl_someValuesFrom; + SerdNode* owl_withRestrictions; + SerdNode* rdf_PlainLiteral; + SerdNode* rdf_Property; + SerdNode* rdf_first; + SerdNode* rdf_rest; + SerdNode* rdf_type; + SerdNode* rdfs_Class; + SerdNode* rdfs_Datatype; + SerdNode* rdfs_Literal; + SerdNode* rdfs_Resource; + SerdNode* rdfs_domain; + SerdNode* rdfs_label; + SerdNode* rdfs_range; + SerdNode* rdfs_subClassOf; + SerdNode* xsd_anyURI; + SerdNode* xsd_float; + SerdNode* xsd_decimal; + SerdNode* xsd_double; + SerdNode* xsd_maxExclusive; + SerdNode* xsd_maxInclusive; + SerdNode* xsd_minExclusive; + SerdNode* xsd_minInclusive; + SerdNode* xsd_pattern; + SerdNode* xsd_string; + SerdNode* sentinel; +} URIs; + +typedef struct +{ + URIs uris; + const SerdModel* model; + unsigned n_errors; + unsigned n_restrictions; + bool quiet; +} ValidationContext; + +static int +check_class_restriction(ValidationContext* ctx, + const SerdNode* restriction, + const SerdStatement* statement, + const SerdNode* instance); + +static int +report(ValidationContext* ctx, + const SerdStatement* statement, + const SerdLogLevel level, + const char* fmt, + ...) +{ + if (ctx->quiet) { + return 0; + } + + va_list args; + va_start(args, fmt); + serd_world_vlogf_internal(ctx->model->world, SERD_ERR_INVALID, + level, + serd_statement_get_cursor(statement), + fmt, + args); + va_end(args); + + ++ctx->n_errors; + return 1; +} + +static bool +check(ValidationContext* ctx, const bool value) +{ + ++ctx->n_restrictions; + return value; +} + +/** Return true iff `child` is a descendant of `parent` by `pred` arcs. + * + * That is, returns true if there is a path from `child` to `parent` by + * following `pred` arcs starting from child. + */ +static bool +is_descendant(ValidationContext* ctx, + const SerdNode* child, + const SerdNode* parent, + const SerdNode* pred) +{ + if (serd_node_equals(child, parent) || + serd_model_ask( + ctx->model, child, ctx->uris.owl_equivalentClass, parent, NULL)) { + return true; + } + + SerdRange* i = serd_model_range(ctx->model, child, pred, NULL, NULL); + SERD_FOREACH (s, i) { + const SerdNode* o = serd_statement_get_object(s); + if (!serd_node_equals(child, o) && + is_descendant(ctx, o, parent, pred)) { + serd_range_free(i); + return true; + } + } + serd_range_free(i); + + return false; +} + +/** Return true iff `child` is a subclass of `parent`. */ +static bool +is_subclass(ValidationContext* ctx, + const SerdNode* child, + const SerdNode* parent) +{ + return is_descendant(ctx, child, parent, ctx->uris.rdfs_subClassOf); +} + +/** Return true iff `child` is a sub-datatype of `parent`. */ +static bool +is_subdatatype(ValidationContext* ctx, + const SerdNode* child, + const SerdNode* parent) +{ + return is_descendant(ctx, child, parent, ctx->uris.owl_onDatatype); +} + +static bool +regexp_match(ValidationContext* ctx, + const SerdStatement* pat_statement, + const char* pat, + const char* str) +{ +#ifdef HAVE_PCRE + // Append a $ to the pattern so we only match if the entire string matches + const size_t len = strlen(pat); + char* const regx = (char*)malloc(len + 2); + memcpy(regx, pat, len); + regx[len] = '$'; + regx[len + 1] = '\0'; + + const char* err = NULL; + int erroffset = 0; + pcre* re = pcre_compile(regx, PCRE_ANCHORED, &err, &erroffset, NULL); + free(regx); + if (!re) { + VERRORF(ctx, + pat_statement, + "Error in pattern \"%s\" at offset %d (%s)\n", + pat, + erroffset, + err); + return false; + } + + const bool ret = + pcre_exec(re, NULL, str, (int)strlen(str), 0, 0, NULL, 0) >= 0; + + pcre_free(re); + return ret; +#else + (void)ctx; + (void)pat_statement; + (void)pat; + (void)str; +#endif // HAVE_PCRE + return true; +} + +static int +bound_cmp(ValidationContext* ctx, + const SerdNode* literal, + const SerdNode* type, + const SerdNode* bound) +{ + const char* str = serd_node_get_string(literal); + const char* bound_str = serd_node_get_string(bound); + const bool is_numeric = (is_subdatatype(ctx, type, ctx->uris.xsd_decimal) || + is_subdatatype(ctx, type, ctx->uris.xsd_double)); + + if (is_numeric) { + const double fbound = serd_strtod(bound_str, NULL); + const double fliteral = serd_strtod(str, NULL); + return ((fliteral < fbound) ? -1 : (fliteral > fbound) ? 1 : 0); + } else { + return strcmp(str, bound_str); + } +} + +static bool +check_literal_restriction(ValidationContext* ctx, + const SerdStatement* statement, + const SerdNode* literal, + const SerdNode* type, + const SerdNode* restriction) +{ + const char* str = serd_node_get_string(literal); + + // Check xsd:pattern + const SerdStatement* pat_statement = serd_model_get_statement( + ctx->model, restriction, ctx->uris.xsd_pattern, 0, 0); + if (pat_statement) { + const SerdNode* pat_node = serd_statement_get_object(pat_statement); + const char* pat = serd_node_get_string(pat_node); + if (check(ctx, !regexp_match(ctx, pat_statement, pat, str))) { + VERRORF(ctx, + statement, + "Value \"%s\" does not match pattern \"%s\"\n", + serd_node_get_string(literal), + pat); + return false; + } + } + + // Check xsd:minInclusive + const SerdNode* lower = serd_model_get( + ctx->model, restriction, ctx->uris.xsd_minInclusive, 0, 0); + if (lower) { + if (check(ctx, bound_cmp(ctx, literal, type, lower) < 0)) { + VERRORF(ctx, + statement, + "Value \"%s\" < minimum \"%s\"\n", + serd_node_get_string(literal), + serd_node_get_string(lower)); + return false; + } + } + + // Check xsd:maxInclusive + const SerdNode* upper = serd_model_get( + ctx->model, restriction, ctx->uris.xsd_maxInclusive, 0, 0); + if (upper) { + if (check(ctx, bound_cmp(ctx, literal, type, upper) > 0)) { + VERRORF(ctx, + statement, + "Value \"%s\" > than maximum \"%s\"\n", + serd_node_get_string(literal), + serd_node_get_string(upper)); + return false; + } + } + + // Check xsd:minExclusive + const SerdNode* elower = serd_model_get( + ctx->model, restriction, ctx->uris.xsd_minExclusive, 0, 0); + if (elower) { + if (check(ctx, bound_cmp(ctx, literal, type, elower) <= 0)) { + VERRORF(ctx, + statement, + "Value \"%s\" <= exclusive minimum \"%s\"\n", + serd_node_get_string(literal), + serd_node_get_string(elower)); + return false; + } + } + + // Check xsd:maxExclusive + const SerdNode* eupper = serd_model_get( + ctx->model, restriction, ctx->uris.xsd_maxExclusive, 0, 0); + if (eupper) { + if (check(ctx, bound_cmp(ctx, literal, type, eupper) >= 0)) { + VERRORF(ctx, + statement, + "Value \"%s\" >= exclusive maximum \"%s\"\n", + serd_node_get_string(literal), + serd_node_get_string(eupper)); + return false; + } + ++ctx->n_restrictions; + } + + return true; // Unknown restriction, be quietly tolerant +} + +static bool +is_datatype(ValidationContext* ctx, const SerdNode* dtype) +{ + SerdRange* t = + serd_model_range(ctx->model, dtype, ctx->uris.rdf_type, NULL, NULL); + SERD_FOREACH (s, t) { + const SerdNode* type = serd_statement_get_object(s); + if (is_subdatatype(ctx, type, ctx->uris.rdfs_Datatype)) { + serd_range_free(t); + return true; // Subdatatype of rdfs:Datatype + } + } + serd_range_free(t); + + return false; +} + +static bool +literal_is_valid(ValidationContext* ctx, + const SerdStatement* statement, + const SerdNode* literal, + const SerdNode* type) +{ + if (!type) { + return true; + } + + // Check that datatype is defined + const SerdNode* datatype = serd_node_get_datatype(literal); + if (datatype && !is_datatype(ctx, datatype)) { + VERRORF(ctx, + statement, + "Datatype <%s> is not defined\n", + serd_node_get_string(datatype)); + return false; + } + + // Find restrictions list + const SerdNode* head = + serd_model_get(ctx->model, type, ctx->uris.owl_withRestrictions, 0, 0); + + // Walk list, checking each restriction + while (head) { + SerdIter* f = + serd_model_find(ctx->model, head, ctx->uris.rdf_first, 0, 0); + if (!f) { + break; + } + + const SerdNode* first = serd_statement_get_object(serd_iter_get(f)); + + // Check this restriction + if (!check_literal_restriction(ctx, statement, literal, type, first)) { + VNOTEF(ctx, + serd_iter_get(f), + "Restriction on <%s>\n", + serd_node_get_string(type)); + serd_iter_free(f); + return false; + } + + // Seek to next list node + head = serd_model_get(ctx->model, head, ctx->uris.rdf_rest, 0, 0); + serd_iter_free(f); + } + + // Recurse up datatype hierarchy + const SerdNode* super = + serd_model_get(ctx->model, type, ctx->uris.owl_onDatatype, 0, 0); + return super ? literal_is_valid(ctx, statement, literal, super) : true; +} + +static bool +is_a(ValidationContext* ctx, const SerdNode* subject, const SerdNode* type) +{ + return serd_model_ask(ctx->model, subject, ctx->uris.rdf_type, type, 0); +} + +static bool +has_explicit_type(ValidationContext* ctx, + const SerdNode* node, + const SerdNode* klass) +{ + if (is_a(ctx, node, klass)) { + return true; // Directly stated to be an instance + } + + SerdRange* t = + serd_model_range(ctx->model, node, ctx->uris.rdf_type, NULL, NULL); + SERD_FOREACH (s, t) { + if (is_subclass(ctx, serd_statement_get_object(s), klass)) { + serd_range_free(t); + return true; // Explicit instance of a subclass + } + } + + serd_range_free(t); + return false; +} + +static bool +is_instance_of(ValidationContext* ctx, + const SerdNode* node, + const SerdNode* klass) +{ + if (!serd_model_ask(ctx->model, node, NULL, NULL, NULL)) { + /* Nothing about this node known in the model at all, assume it is some + external resource we can't validate. */ + return true; + } else if (serd_node_get_type(node) == SERD_BLANK) { + /* Be permissive for blank nodes and don't require explicit type + annotation, to avoid countless errors with things like lists. */ + return true; + } + + return (has_explicit_type(ctx, node, klass) || + serd_node_equals(klass, ctx->uris.rdfs_Resource) || + serd_node_equals(klass, ctx->uris.owl_Thing)); +} + +static bool +check_instance_type(ValidationContext* ctx, + const SerdStatement* statement, + const SerdNode* node, + const SerdNode* klass) +{ + if (is_subclass(ctx, klass, ctx->uris.rdfs_Literal) || + is_a(ctx, klass, ctx->uris.rdfs_Datatype)) { + VERROR(ctx, statement, "Class instance found where literal expected\n"); + return false; + } + + if (is_a(ctx, klass, ctx->uris.owl_Restriction)) { + if (check_class_restriction(ctx, klass, statement, node)) { + return false; + } + } + + SerdRange* r = serd_model_range( + ctx->model, klass, ctx->uris.rdfs_subClassOf, NULL, NULL); + SERD_FOREACH (s, r) { + const SerdNode* super = serd_statement_get_object(s); + if (!serd_node_equals(super, klass) && + !check_instance_type(ctx, statement, node, super)) { + serd_range_free(r); + return false; + } + } + serd_range_free(r); + + if (!is_instance_of(ctx, node, klass)) { + VERRORF(ctx, + statement, + "Node %s is not an instance of %s\n", + serd_node_get_string(node), + serd_node_get_string(klass)); + return false; + } + + return true; +} + +static bool +check_type(ValidationContext* ctx, + const SerdStatement* statement, + const SerdNode* node, + const SerdNode* type) +{ + if (serd_node_equals(type, ctx->uris.rdfs_Resource) || + serd_node_equals(type, ctx->uris.owl_Thing)) { + return true; // Trivially true for everything (more or less) + } + + if (serd_node_get_type(node) == SERD_LITERAL) { + if (serd_node_equals(type, ctx->uris.rdfs_Literal)) { + return true; // Trivially true for a literal + } else if (serd_node_equals(type, ctx->uris.rdf_PlainLiteral)) { + if (serd_node_get_datatype(node)) { + VERRORF(ctx, + statement, + "Literal \"%s\" should be plain, but has datatype " + "<%s>\n", + serd_node_get_string(node), + serd_node_get_string(serd_node_get_datatype(node))); + return false; + } + } else if (!is_a(ctx, type, ctx->uris.rdfs_Datatype)) { + VERRORF(ctx, + statement, + "Literal \"%s\" where instance of <%s> expected\n", + serd_node_get_string(node), + serd_node_get_string(type)); + return false; + } else { + return literal_is_valid(ctx, statement, node, type); + } + } else if (serd_node_get_type(node) == SERD_URI) { + if (!is_subdatatype(ctx, type, ctx->uris.xsd_anyURI)) { + // Only check if type is not anyURI, since node is a URI + return check_instance_type(ctx, statement, node, type); + } + } else { + return check_instance_type(ctx, statement, node, type); + } + + return true; +} + +static uint64_t +count_non_blanks(SerdRange* i, SerdField field) +{ + uint64_t n = 0; + SERD_FOREACH (s, i) { + const SerdNode* node = serd_statement_get_node(s, field); + if (serd_node_get_type(node) != SERD_BLANK) { + ++n; + } + } + return n; +} + +static int +check_statement(ValidationContext* ctx, const SerdStatement* statement) +{ + int st = 0; + const URIs* uris = &ctx->uris; + const SerdNode* subj = serd_statement_get_subject(statement); + const SerdNode* pred = serd_statement_get_predicate(statement); + const SerdNode* obj = serd_statement_get_object(statement); + + if (serd_node_equals(pred, uris->rdf_type)) { + // Type statement, check that object is a valid instance of type + check_type(ctx, statement, subj, obj); + } + + if (!serd_model_ask(ctx->model, pred, uris->rdfs_label, 0, 0)) { + // Warn if property has no label + st = VWARNF(ctx, + statement, + "Property <%s> has no label\n", + serd_node_get_string(pred)); + } + + if (serd_node_get_type(obj) == SERD_LITERAL && + !literal_is_valid(ctx, statement, obj, serd_node_get_datatype(obj))) { + st = SERD_ERR_INVALID; + } + + // Check restrictions based on property type + if (is_a(ctx, pred, uris->owl_DatatypeProperty)) { + if (serd_node_get_type(obj) != SERD_LITERAL) { + st = VERROR(ctx, statement, + "Datatype property with non-literal value\n"); + } + } else if (is_a(ctx, pred, uris->owl_ObjectProperty)) { + if (serd_node_get_type(obj) == SERD_LITERAL) { + st = VERROR(ctx, statement, "Object property with literal value\n"); + } + } else if (is_a(ctx, pred, uris->owl_FunctionalProperty)) { + SerdRange* o = serd_model_range(ctx->model, subj, pred, NULL, NULL); + const uint64_t n = count_non_blanks(o, SERD_OBJECT); + if (n > 1) { + st = VERRORF(ctx, statement, + "Functional property with %u objects\n", n); + } + serd_range_free(o); + } else if (is_a(ctx, pred, uris->owl_InverseFunctionalProperty)) { + SerdRange* s = serd_model_range(ctx->model, NULL, pred, obj, NULL); + const uint64_t n = count_non_blanks(s, SERD_SUBJECT); + if (n > 1) { + st = VERRORF(ctx, statement, + "Inverse functional property with %u subjects\n", n); + } + serd_range_free(s); + } else { + SerdRange* t = serd_model_range(ctx->model, pred, uris->rdf_type, 0, 0); + + bool is_property = false; + SERD_FOREACH (s, t) { + const SerdNode* type = serd_statement_get_object(s); + if (is_subclass(ctx, type, uris->rdf_Property)) { + is_property = true; + break; + } + } + + if (!is_property) { + st = VERROR(ctx, statement, "Use of undefined property\n"); + } + + serd_range_free(t); + } + + // Check range + SerdRange* r = serd_model_range(ctx->model, pred, uris->rdfs_range, 0, 0); + SERD_FOREACH (s, r) { + const SerdNode* range = serd_statement_get_object(s); + if (!has_explicit_type(ctx, obj, range) && + !check_type(ctx, statement, obj, range)) { + VNOTEF(ctx, serd_range_front(r), + "In range of <%s>\n", serd_node_get_string(pred)); + } + } + serd_range_free(r); + + // Check domain + SerdRange* d = serd_model_range(ctx->model, pred, uris->rdfs_domain, 0, 0); + SERD_FOREACH (s, d) { + const SerdNode* domain = serd_statement_get_object(s); + if (!has_explicit_type(ctx, subj, domain) && + !check_type(ctx, statement, subj, domain)) { + VNOTEF(ctx, serd_range_front(d), + "In domain of <%s>\n", serd_node_get_string(pred)); + } + } + serd_range_free(d); + + return st; +} + +static int +cardinality_error(ValidationContext* ctx, + const SerdStatement* statement, + const SerdStatement* restriction_statement, + const SerdNode* property, + const size_t actual_values, + const char* comparison, + const size_t expected_values) +{ + const int st = VERRORF(ctx, + statement, + "Property <%s> has %zu %s %zu values\n", + serd_node_get_string(property), + actual_values, + comparison, + expected_values); + VNOTE(ctx, restriction_statement, "Restriction here\n"); + return st; +} + +static int +check_property_restriction(ValidationContext* ctx, + const SerdNode* restriction, + const SerdNode* prop, + const SerdStatement* statement, + const SerdNode* instance) +{ + typedef size_t Count; + + int st = 0; + const size_t values = + serd_model_count(ctx->model, instance, prop, NULL, NULL); + + // Check exact cardinality + const SerdStatement* c = serd_model_get_statement( + ctx->model, restriction, ctx->uris.owl_cardinality, NULL, NULL); + if (c) { + const SerdNode* card = serd_statement_get_object(c); + const Count count = strtoul(serd_node_get_string(card), NULL, 10); + if (check(ctx, values != count)) { + st = cardinality_error( + ctx, statement, c, prop, values, "!=", count); + } + } + + // Check minimum cardinality + const SerdStatement* l = serd_model_get_statement( + ctx->model, restriction, ctx->uris.owl_minCardinality, NULL, NULL); + if (l) { + const SerdNode* card = serd_statement_get_object(l); + const Count count = strtoul(serd_node_get_string(card), NULL, 10); + if (check(ctx, values < count)) { + st = cardinality_error(ctx, statement, l, prop, values, "<", count); + } + } + + // Check maximum cardinality + const SerdStatement* u = serd_model_get_statement( + ctx->model, restriction, ctx->uris.owl_maxCardinality, NULL, NULL); + if (u) { + const SerdNode* card = serd_statement_get_object(u); + const Count count = strtoul(serd_node_get_string(card), NULL, 10); + if (check(ctx, values > count)) { + st = cardinality_error(ctx, statement, u, prop, values, ">", count); + } + } + + // Check someValuesFrom + const SerdStatement* s = serd_model_get_statement( + ctx->model, restriction, ctx->uris.owl_someValuesFrom, 0, 0); + if (s) { + const SerdNode* some = serd_statement_get_object(s); + + ctx->quiet = true; + SerdRange* v = serd_model_range(ctx->model, instance, prop, NULL, NULL); + bool found = false; + SERD_FOREACH (i, v) { + const SerdNode* value = serd_statement_get_object(i); + if (check_type(ctx, statement, value, some)) { + found = true; + break; + } + } + ctx->quiet = false; + + if (check(ctx, !found)) { + st = VERRORF(ctx, + statement, + "%s has no <%s> values of type <%s>\n", + serd_node_get_string(instance), + serd_node_get_string(prop), + serd_node_get_string(some)); + VNOTE(ctx, s, "Restriction here\n"); + } + serd_range_free(v); + } + + // Check allValuesFrom + const SerdStatement* a = serd_model_get_statement( + ctx->model, restriction, ctx->uris.owl_allValuesFrom, 0, 0); + if (a) { + ++ctx->n_restrictions; + const SerdNode* all = serd_statement_get_object(a); + + SerdRange* v = serd_model_range(ctx->model, instance, prop, NULL, NULL); + SERD_FOREACH (i, v) { + const SerdNode* value = serd_statement_get_object(i); + if (!check_type(ctx, statement, value, all)) { + st = VERRORF(ctx, + i, + "<%s> value not of type <%s>\n", + serd_node_get_string(prop), + serd_node_get_string(all)); + VNOTE(ctx, a, "Restriction here\n"); + break; + } + } + serd_range_free(v); + } + + return st; +} + +static int +check_class_restriction(ValidationContext* ctx, + const SerdNode* restriction, + const SerdStatement* statement, + const SerdNode* instance) +{ + const SerdNode* prop = serd_model_get( + ctx->model, restriction, ctx->uris.owl_onProperty, NULL, NULL); + + return prop ? check_property_restriction( + ctx, restriction, prop, statement, instance) + : 0; +} + +static void +init_uris(URIs* uris) +{ +#define URI(prefix, suffix) \ + uris->prefix##_##suffix = serd_new_uri(NS_##prefix #suffix) + + URI(owl, Class); + URI(owl, DatatypeProperty); + URI(owl, FunctionalProperty); + URI(owl, InverseFunctionalProperty); + URI(owl, ObjectProperty); + URI(owl, Restriction); + URI(owl, Thing); + URI(owl, allValuesFrom); + URI(owl, cardinality); + URI(owl, equivalentClass); + URI(owl, maxCardinality); + URI(owl, minCardinality); + URI(owl, onDatatype); + URI(owl, onProperty); + URI(owl, someValuesFrom); + URI(owl, withRestrictions); + URI(rdf, PlainLiteral); + URI(rdf, Property); + URI(rdf, first); + URI(rdf, rest); + URI(rdf, type); + URI(rdfs, Class); + URI(rdfs, Datatype); + URI(rdfs, Literal); + URI(rdfs, Resource); + URI(rdfs, domain); + URI(rdfs, label); + URI(rdfs, range); + URI(rdfs, subClassOf); + URI(xsd, anyURI); + URI(xsd, float); + URI(xsd, decimal); + URI(xsd, double); + URI(xsd, maxExclusive); + URI(xsd, maxInclusive); + URI(xsd, minExclusive); + URI(xsd, minInclusive); + URI(xsd, pattern); + URI(xsd, string); +} + +SerdStatus +serd_validate(const SerdModel* model) +{ + ValidationContext ctx; + memset(&ctx, 0, sizeof(ValidationContext)); + init_uris(&ctx.uris); + + ctx.model = model; + ctx.n_errors = 0; + ctx.n_restrictions = 0; + +#ifndef HAVE_PCRE + fprintf(stderr, "warning: Built without PCRE, datatypes not checked.\n"); +#endif + + int st = 0; + SerdRange* i = serd_model_all(ctx.model); + SERD_FOREACH (statement, i) { + st = check_statement(&ctx, statement) || st; + } + serd_range_free(i); + + printf("Found %d errors (checked %d restrictions)\n", + ctx.n_errors, + ctx.n_restrictions); + + for (SerdNode** n = (SerdNode**)&ctx.uris; *n; ++n) { + serd_node_free(*n); + } + + return !st && ctx.n_errors == 0 ? SERD_SUCCESS : SERD_ERR_INVALID; +} |