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index 64145ee723de2bf39adb91830f541d2b17e22c53..489dd1ac52c6fa817df40046d5f0725b6fb45386 100644 (file)
--- a/src/core/store_lookup.c
+++ b/src/core/store_lookup.c
* simple full table scan is supported only.
*/
+#if HAVE_CONFIG_H
+# include "config.h"
+#endif /* HAVE_CONFIG_H */
+
#include "sysdb.h"
#include "core/store-private.h"
+#include "core/object.h"
#include <assert.h>
#include <sys/types.h>
#include <regex.h>
+#include <stdlib.h>
#include <string.h>
+#include <limits.h>
+
/*
* private data types
*/
-/* match the name of something */
typedef struct {
- const char *name;
- regex_t *name_re;
-} name_matcher_t;
+ sdb_store_matcher_t *m;
+ sdb_store_lookup_cb cb;
+ void *user_data;
+} lookup_iter_data_t;
-/* matcher base type */
-typedef struct {
- /* type of the matcher */
- int type;
-} matcher_t;
-#define M(m) ((matcher_t *)(m))
+/*
+ * private helper functions
+ */
-/* logical operator matcher */
-typedef struct {
- matcher_t super;
+static int
+lookup_iter(sdb_store_obj_t *obj, void *user_data)
+{
+ lookup_iter_data_t *d = user_data;
- /* left and right hand operands */
- matcher_t *left;
- matcher_t *right;
-} op_matcher_t;
-#define OP_M(m) ((op_matcher_t *)(m))
+ if (sdb_store_matcher_matches(d->m, obj))
+ return d->cb(obj, d->user_data);
+ return 0;
+} /* lookup_iter */
-/* match any type of object by it's base information */
-typedef struct {
- matcher_t super;
+static sdb_attribute_t *
+attr_get(sdb_host_t *host, const char *name)
+{
+ sdb_llist_iter_t *iter = NULL;
+ sdb_attribute_t *attr = NULL;
- /* match by the name of the object */
- name_matcher_t name;
-} obj_matcher_t;
-#define OBJ_M(m) ((obj_matcher_t *)(m))
+ iter = sdb_llist_get_iter(host->attributes);
+ while (sdb_llist_iter_has_next(iter)) {
+ sdb_attribute_t *a = ATTR(sdb_llist_iter_get_next(iter));
-/* match attributes */
-typedef struct {
- obj_matcher_t super;
- /* XXX: this needs to be more flexible;
- * add support for type-specific operators */
- name_matcher_t value;
-} attr_matcher_t;
-#define ATTR_M(m) ((attr_matcher_t *)(m))
-
-/* match services */
-typedef struct {
- obj_matcher_t super;
- /* match by attributes assigned to the service */
- attr_matcher_t *attr;
-} service_matcher_t;
-#define SERVICE_M(m) ((service_matcher_t *)(m))
+ if (strcasecmp(name, SDB_OBJ(a)->name))
+ continue;
-/* match hosts */
-typedef struct {
- obj_matcher_t super;
- /* match by services assigned to the host */
- service_matcher_t *service;
- /* match by attributes assigned to the host */
- attr_matcher_t *attr;
-} host_matcher_t;
-#define HOST_M(m) ((host_matcher_t *)(m))
+ assert(STORE_OBJ(a)->type == SDB_ATTRIBUTE);
+ attr = a;
+ break;
+ }
+ sdb_llist_iter_destroy(iter);
+ return attr;
+} /* attr_get */
/*
- * matcher implementations
+ * conditional implementations
*/
static int
-match_logical(matcher_t *m, sdb_store_base_t *obj);
-static int
-match_obj(matcher_t *m, sdb_store_base_t *obj);
+attr_cmp(sdb_host_t *host, sdb_store_cond_t *cond)
+{
+ sdb_attribute_t *attr;
-/* specific matchers */
+ attr = attr_get(host, ATTR_C(cond)->name);
+ if (! attr)
+ return INT_MAX;
+ if (attr->value.type != ATTR_C(cond)->value.type)
+ return INT_MAX;
+ return sdb_data_cmp(&attr->value, &ATTR_C(cond)->value);
+} /* attr_cmp */
+
+/*
+ * matcher implementations
+ */
static int
-match_name(name_matcher_t *m, const char *name)
+match_string(string_matcher_t *m, const char *name)
{
- assert(m);
-
if ((! m->name) && (! m->name_re))
- return 0;
+ return 1;
if (! name)
name = "";
- if (m->name && (! strcasecmp(m->name, name)))
+ if (m->name && strcasecmp(m->name, name))
return 0;
- if (m->name_re && (! regexec(m->name_re, name,
- /* matches */ 0, NULL, /* flags = */ 0)))
+ if (m->name_re && regexec(m->name_re, name,
+ /* matches */ 0, NULL, /* flags = */ 0))
return 0;
- return -1;
-} /* match_name */
+ return 1;
+} /* match_string */
-/* match attribute specific values;
- * always call this function through match_obj() */
static int
-match_attr(attr_matcher_t *m, sdb_store_base_t *obj)
+match_logical(sdb_store_matcher_t *m, sdb_host_t *host)
{
- assert(m && obj);
+ int status;
- if (obj->type != SDB_ATTRIBUTE)
- return -1;
+ assert((m->type == MATCHER_AND) || (m->type == MATCHER_OR));
+ assert(OP_M(m)->left && OP_M(m)->right);
- {
- sdb_attribute_t *attr = SDB_ATTR(obj);
- char buf[sdb_data_strlen(&attr->value) + 1];
+ status = sdb_store_matcher_matches(OP_M(m)->left, STORE_OBJ(host));
+ /* lazy evaluation */
+ if ((! status) && (m->type == MATCHER_AND))
+ return status;
+ else if (status && (m->type == MATCHER_OR))
+ return status;
- if (sdb_data_format(&attr->value, buf, sizeof(buf), SDB_UNQUOTED))
- return -1;
- return match_name(&m->value, buf);
- }
-} /* match_attr */
+ return sdb_store_matcher_matches(OP_M(m)->right, STORE_OBJ(host));
+} /* match_logical */
-/* match service specific values;
- * always call this function through match_obj() */
static int
-match_service(service_matcher_t *m, sdb_store_base_t *obj)
+match_unary(sdb_store_matcher_t *m, sdb_host_t *host)
{
- sdb_llist_iter_t *iter;
+ assert(m->type == MATCHER_NOT);
+ assert(UOP_M(m)->op);
- assert(m && obj);
+ return !sdb_store_matcher_matches(UOP_M(m)->op, STORE_OBJ(host));
+} /* match_unary */
- if (obj->type != SDB_SERVICE)
- return -1;
+static int
+match_name(sdb_store_matcher_t *m, sdb_host_t *host)
+{
+ sdb_llist_iter_t *iter = NULL;
+ int status = 0;
- iter = sdb_llist_get_iter(SDB_STORE_OBJ(obj)->attributes);
- while (sdb_llist_iter_has_next(iter)) {
- sdb_store_base_t *attr = STORE_BASE(sdb_llist_iter_get_next(iter));
+ assert(m->type == MATCHER_NAME);
- /* if any of the attributes matches we found a matching service */
- if (! match_obj(M(m->attr), attr)) {
- sdb_llist_iter_destroy(iter);
- return 0;
+ switch (NAME_M(m)->obj_type) {
+ case SDB_HOST:
+ return match_string(&NAME_M(m)->name, SDB_OBJ(host)->name);
+ break;
+ case SDB_SERVICE:
+ iter = sdb_llist_get_iter(host->services);
+ break;
+ case SDB_ATTRIBUTE:
+ iter = sdb_llist_get_iter(host->attributes);
+ break;
+ }
+
+ while (sdb_llist_iter_has_next(iter)) {
+ sdb_object_t *child = sdb_llist_iter_get_next(iter);
+ if (match_string(&NAME_M(m)->name, child->name)) {
+ status = 1;
+ break;
}
}
sdb_llist_iter_destroy(iter);
- return -1;
-} /* match_service */
+ return status;
+} /* match_name */
-/* match host specific values;
- * always call this function through match_obj() */
static int
-match_host(host_matcher_t *m, sdb_store_base_t *obj)
+match_attr(sdb_store_matcher_t *m, sdb_host_t *host)
+{
+ sdb_attribute_t *attr;
+
+ assert(m->type == MATCHER_ATTR);
+ assert(ATTR_M(m)->name);
+
+ attr = attr_get(host, ATTR_M(m)->name);
+ if (attr) {
+ char buf[sdb_data_strlen(&attr->value) + 1];
+ if (sdb_data_format(&attr->value, buf, sizeof(buf), SDB_UNQUOTED) <= 0)
+ return 0;
+ if (match_string(&ATTR_M(m)->value, buf))
+ return 1;
+ }
+ return 0;
+} /* match_attr */
+
+static int
+match_lt(sdb_store_matcher_t *m, sdb_host_t *host)
{
- sdb_llist_iter_t *iter;
int status;
+ assert(m->type == MATCHER_LT);
+ status = COND_M(m)->cond->cmp(host, COND_M(m)->cond);
+ return (status != INT_MAX) && (status < 0);
+} /* match_lt */
- assert(m && obj);
+static int
+match_le(sdb_store_matcher_t *m, sdb_host_t *host)
+{
+ int status;
+ assert(m->type == MATCHER_LE);
+ status = COND_M(m)->cond->cmp(host, COND_M(m)->cond);
+ return (status != INT_MAX) && (status <= 0);
+} /* match_le */
- if (obj->type != SDB_HOST)
+static int
+match_eq(sdb_store_matcher_t *m, sdb_host_t *host)
+{
+ int status;
+ assert(m->type == MATCHER_EQ);
+ status = COND_M(m)->cond->cmp(host, COND_M(m)->cond);
+ return (status != INT_MAX) && (! status);
+} /* match_eq */
+
+static int
+match_ge(sdb_store_matcher_t *m, sdb_host_t *host)
+{
+ int status;
+ assert(m->type == MATCHER_GE);
+ status = COND_M(m)->cond->cmp(host, COND_M(m)->cond);
+ return (status != INT_MAX) && (status >= 0);
+} /* match_ge */
+
+static int
+match_gt(sdb_store_matcher_t *m, sdb_host_t *host)
+{
+ int status;
+ assert(m->type == MATCHER_GT);
+ status = COND_M(m)->cond->cmp(host, COND_M(m)->cond);
+ return (status != INT_MAX) && (status > 0);
+} /* match_gt */
+
+typedef int (*matcher_cb)(sdb_store_matcher_t *, sdb_host_t *);
+
+/* this array needs to be indexable by the matcher types;
+ * -> update the enum in store-private.h when updating this */
+static matcher_cb matchers[] = {
+ match_logical,
+ match_logical,
+ match_unary,
+ match_name,
+ match_attr,
+ match_lt,
+ match_le,
+ match_eq,
+ match_ge,
+ match_gt,
+};
+
+/*
+ * private conditional types
+ */
+
+static int
+attr_cond_init(sdb_object_t *obj, va_list ap)
+{
+ const char *name = va_arg(ap, const char *);
+ const sdb_data_t *value = va_arg(ap, const sdb_data_t *);
+
+ if (! name)
return -1;
- if (m->service) {
- iter = sdb_llist_get_iter(SDB_STORE_OBJ(obj)->children);
- status = -1;
+ SDB_STORE_COND(obj)->cmp = attr_cmp;
+
+ ATTR_C(obj)->name = strdup(name);
+ if (! ATTR_C(obj)->name)
+ return -1;
+ if (sdb_data_copy(&ATTR_C(obj)->value, value))
+ return -1;
+ return 0;
+} /* attr_cond_init */
+
+static void
+attr_cond_destroy(sdb_object_t *obj)
+{
+ if (ATTR_C(obj)->name)
+ free(ATTR_C(obj)->name);
+ sdb_data_free_datum(&ATTR_C(obj)->value);
+} /* attr_cond_destroy */
+
+static sdb_type_t attr_cond_type = {
+ /* size = */ sizeof(attr_cond_t),
+ /* init = */ attr_cond_init,
+ /* destroy = */ attr_cond_destroy,
+};
+
+/*
+ * private matcher types
+ */
+
+/* initializes a string matcher consuming two elements from ap */
+static int
+string_matcher_init(string_matcher_t *m, va_list ap)
+{
+ const char *name = va_arg(ap, const char *);
+ const char *name_re = va_arg(ap, const char *);
+
+ if (name) {
+ m->name = strdup(name);
+ if (! m->name)
+ return -1;
}
- else {
- iter = NULL;
- status = 0;
+ if (name_re) {
+ m->name_re = malloc(sizeof(*m->name_re));
+ if (! m->name_re)
+ return -1;
+ if (regcomp(m->name_re, name_re, REG_EXTENDED | REG_ICASE | REG_NOSUB))
+ return -1;
}
- while (sdb_llist_iter_has_next(iter)) {
- sdb_store_base_t *service = STORE_BASE(sdb_llist_iter_get_next(iter));
+ return 0;
+} /* string_matcher_init */
- /* found a matching service */
- if (! match_obj(M(m->service), service)) {
- status = 0;
- break;
- }
+static void
+string_matcher_destroy(string_matcher_t *m)
+{
+ if (m->name)
+ free(m->name);
+ if (m->name_re) {
+ regfree(m->name_re);
+ free(m->name_re);
}
- sdb_llist_iter_destroy(iter);
+} /* string_matcher_destroy */
- if (status)
- return status;
- else if (! m->attr)
- return 0;
+static char *
+string_tostring(string_matcher_t *m, char *buf, size_t buflen)
+{
+ snprintf(buf, buflen, "{ %s%s%s, %p }",
+ m->name ? "'" : "", m->name ? m->name : "NULL", m->name ? "'" : "",
+ m->name_re);
+ return buf;
+} /* string_tostring */
- iter = sdb_llist_get_iter(SDB_STORE_OBJ(obj)->attributes);
- while (sdb_llist_iter_has_next(iter)) {
- sdb_store_base_t *attr = STORE_BASE(sdb_llist_iter_get_next(iter));
+/* initializes a name matcher */
+static int
+name_matcher_init(sdb_object_t *obj, va_list ap)
+{
+ name_matcher_t *m = NAME_M(obj);
+ M(obj)->type = MATCHER_NAME;
+ return string_matcher_init(&m->name, ap);
+} /* name_matcher_init */
- /* if any attribute matches, we found a matching host */
- if (! match_obj(M(m->attr), attr)) {
- sdb_llist_iter_destroy(iter);
- return 0;
- }
- }
- sdb_llist_iter_destroy(iter);
- return -1;
-} /* match_host */
+static void
+name_matcher_destroy(sdb_object_t *obj)
+{
+ name_matcher_t *m = NAME_M(obj);
+ string_matcher_destroy(&m->name);
+} /* name_matcher_destroy */
-/* generic matchers */
+static char *
+name_tostring(sdb_store_matcher_t *m, char *buf, size_t buflen)
+{
+ char name[buflen + 1];
+ assert(m->type == MATCHER_NAME);
+ snprintf(buf, buflen, "OBJ[%s]{ NAME%s }",
+ SDB_STORE_TYPE_TO_NAME(NAME_M(m)->obj_type),
+ string_tostring(&NAME_M(m)->name, name, sizeof(name)));
+ return buf;
+} /* name_tostring */
-enum {
- MATCHER_OR,
- MATCHER_AND,
- MATCHER_ATTR,
- MATCHER_SERVICE,
- MATCHER_HOST,
-};
+static int
+attr_matcher_init(sdb_object_t *obj, va_list ap)
+{
+ attr_matcher_t *attr = ATTR_M(obj);
+ const char *name = va_arg(ap, const char *);
-typedef int (*matcher_cb)(matcher_t *, sdb_store_base_t *);
+ M(obj)->type = MATCHER_ATTR;
+ if (name) {
+ attr->name = strdup(name);
+ if (! attr->name)
+ return -1;
+ }
+ return string_matcher_init(&attr->value, ap);
+} /* attr_matcher_init */
-/* this array needs to be indexable by the matcher types */
-static matcher_cb matchers[] = {
- match_logical,
- match_logical,
- match_obj,
- match_obj,
- match_obj,
-};
+static void
+attr_matcher_destroy(sdb_object_t *obj)
+{
+ attr_matcher_t *attr = ATTR_M(obj);
+ if (attr->name)
+ free(attr->name);
+ attr->name = NULL;
+ string_matcher_destroy(&attr->value);
+} /* attr_matcher_destroy */
+
+static char *
+attr_tostring(sdb_store_matcher_t *m, char *buf, size_t buflen)
+{
+ char value[buflen + 1];
+
+ if (! m) {
+ snprintf(buf, buflen, "ATTR{}");
+ return buf;
+ }
+
+ assert(m->type == MATCHER_ATTR);
+ snprintf(buf, buflen, "ATTR[%s]{ VALUE%s }", ATTR_M(m)->name,
+ string_tostring(&ATTR_M(m)->value, value, sizeof(value)));
+ return buf;
+} /* attr_tostring */
static int
-match(matcher_t *m, sdb_store_base_t *obj)
+cond_matcher_init(sdb_object_t *obj, va_list ap)
{
- assert(m && obj);
- assert((0 <= m->type)
- && ((size_t)m->type < SDB_STATIC_ARRAY_LEN(matchers)));
+ int type = va_arg(ap, int);
+ sdb_store_cond_t *cond = va_arg(ap, sdb_store_cond_t *);
+
+ if (! cond)
+ return -1;
+
+ sdb_object_ref(SDB_OBJ(cond));
- return matchers[m->type](m, obj);
-} /* match */
+ M(obj)->type = type;
+ COND_M(obj)->cond = cond;
+ return 0;
+} /* cond_matcher_init */
+
+static void
+cond_matcher_destroy(sdb_object_t *obj)
+{
+ sdb_object_deref(SDB_OBJ(COND_M(obj)->cond));
+} /* cond_matcher_destroy */
+
+static char *
+cond_tostring(sdb_store_matcher_t *m, char *buf, size_t buflen)
+{
+ if (COND_M(m)->cond->cmp == attr_cmp) {
+ char value[buflen];
+ if (sdb_data_format(&ATTR_C(COND_M(m)->cond)->value,
+ value, sizeof(value), SDB_SINGLE_QUOTED) < 0)
+ snprintf(value, sizeof(value), "ERR");
+ snprintf(buf, buflen, "ATTR[%s]{ %s %s }",
+ ATTR_C(COND_M(m)->cond)->name, MATCHER_SYM(m->type), value);
+ }
+ return buf;
+} /* cond_tostring */
static int
-match_logical(matcher_t *m, sdb_store_base_t *obj)
+op_matcher_init(sdb_object_t *obj, va_list ap)
{
- int status;
+ M(obj)->type = va_arg(ap, int);
+ if ((M(obj)->type != MATCHER_OR) && (M(obj)->type != MATCHER_AND))
+ return -1;
- assert(m && obj);
- assert(OP_M(m)->left && OP_M(m)->right);
+ OP_M(obj)->left = va_arg(ap, sdb_store_matcher_t *);
+ sdb_object_ref(SDB_OBJ(OP_M(obj)->left));
+ OP_M(obj)->right = va_arg(ap, sdb_store_matcher_t *);
+ sdb_object_ref(SDB_OBJ(OP_M(obj)->right));
- status = match(OP_M(m)->left, obj);
- /* lazy evaluation */
- if (status && (m->type == MATCHER_AND))
- return status;
- else if ((! status) && (m->type == MATCHER_OR))
- return status;
+ if ((! OP_M(obj)->left) || (! OP_M(obj)->right))
+ return -1;
+ return 0;
+} /* op_matcher_init */
- return match(OP_M(m)->right, obj);
-} /* match_logical */
+static void
+op_matcher_destroy(sdb_object_t *obj)
+{
+ if (OP_M(obj)->left)
+ sdb_object_deref(SDB_OBJ(OP_M(obj)->left));
+ if (OP_M(obj)->right)
+ sdb_object_deref(SDB_OBJ(OP_M(obj)->right));
+} /* op_matcher_destroy */
+
+static char *
+op_tostring(sdb_store_matcher_t *m, char *buf, size_t buflen)
+{
+ char left[buflen + 1], right[buflen + 1];
+
+ if (! m) {
+ /* this should not happen */
+ snprintf(buf, buflen, "()");
+ return buf;
+ }
+
+ assert((m->type == MATCHER_OR) || (m->type == MATCHER_AND));
+ snprintf(buf, buflen, "(%s, %s, %s)",
+ m->type == MATCHER_OR ? "OR" : "AND",
+ sdb_store_matcher_tostring(OP_M(m)->left, left, sizeof(left)),
+ sdb_store_matcher_tostring(OP_M(m)->right, right, sizeof(right)));
+ return buf;
+} /* op_tostring */
static int
-match_obj(matcher_t *m, sdb_store_base_t *obj)
+uop_matcher_init(sdb_object_t *obj, va_list ap)
{
- int status;
+ M(obj)->type = va_arg(ap, int);
+ if (M(obj)->type != MATCHER_NOT)
+ return -1;
- assert(m && obj);
+ UOP_M(obj)->op = va_arg(ap, sdb_store_matcher_t *);
+ sdb_object_ref(SDB_OBJ(UOP_M(obj)->op));
- status = match_name(&OBJ_M(m)->name, obj->super.name);
- if (status)
- return status;
+ if (! UOP_M(obj)->op)
+ return -1;
+ return 0;
+} /* uop_matcher_init */
- switch (m->type) {
- case MATCHER_ATTR:
- return match_attr(ATTR_M(m), obj);
- break;
- case MATCHER_SERVICE:
- return match_service(SERVICE_M(m), obj);
- break;
- case MATCHER_HOST:
- return match_host(HOST_M(m), obj);
- break;
+static void
+uop_matcher_destroy(sdb_object_t *obj)
+{
+ if (UOP_M(obj)->op)
+ sdb_object_deref(SDB_OBJ(UOP_M(obj)->op));
+} /* uop_matcher_destroy */
+
+static char *
+uop_tostring(sdb_store_matcher_t *m, char *buf, size_t buflen)
+{
+ char op[buflen + 1];
+
+ if (! m) {
+ /* this should not happen */
+ snprintf(buf, buflen, "()");
+ return buf;
}
- return -1;
-} /* match_obj */
+
+ assert(m->type == MATCHER_NOT);
+ snprintf(buf, buflen, "(NOT, %s)",
+ sdb_store_matcher_tostring(UOP_M(m)->op, op, sizeof(op)));
+ return buf;
+} /* uop_tostring */
+
+static sdb_type_t name_type = {
+ /* size = */ sizeof(name_matcher_t),
+ /* init = */ name_matcher_init,
+ /* destroy = */ name_matcher_destroy,
+};
+
+static sdb_type_t attr_type = {
+ /* size = */ sizeof(attr_matcher_t),
+ /* init = */ attr_matcher_init,
+ /* destroy = */ attr_matcher_destroy,
+};
+
+static sdb_type_t cond_type = {
+ /* size = */ sizeof(cond_matcher_t),
+ /* init = */ cond_matcher_init,
+ /* destroy = */ cond_matcher_destroy,
+};
+
+static sdb_type_t op_type = {
+ /* size = */ sizeof(op_matcher_t),
+ /* init = */ op_matcher_init,
+ /* destroy = */ op_matcher_destroy,
+};
+
+static sdb_type_t uop_type = {
+ /* size = */ sizeof(uop_matcher_t),
+ /* init = */ uop_matcher_init,
+ /* destroy = */ uop_matcher_destroy,
+};
+
+typedef char *(*matcher_tostring_cb)(sdb_store_matcher_t *, char *, size_t);
+
+/* this array needs to be indexable by the matcher types;
+ * -> update the enum in store-private.h when updating this */
+static matcher_tostring_cb matchers_tostring[] = {
+ op_tostring,
+ op_tostring,
+ uop_tostring,
+ name_tostring,
+ attr_tostring,
+ cond_tostring,
+ cond_tostring,
+ cond_tostring,
+ cond_tostring,
+ cond_tostring,
+};
+
+/*
+ * public API
+ */
+
+sdb_store_cond_t *
+sdb_store_attr_cond(const char *name, const sdb_data_t *value)
+{
+ return SDB_STORE_COND(sdb_object_create("attr-cond", attr_cond_type,
+ name, value));
+} /* sdb_store_attr_cond */
+
+sdb_store_matcher_t *
+sdb_store_name_matcher(int type, const char *name, _Bool re)
+{
+ sdb_store_matcher_t *m;
+
+ if (re)
+ m = M(sdb_object_create("name-matcher", name_type,
+ NULL, name));
+ else
+ m = M(sdb_object_create("name-matcher", name_type,
+ name, NULL));
+
+ if (! m)
+ return NULL;
+
+ NAME_M(m)->obj_type = type;
+ return m;
+} /* sdb_store_name_matcher */
+
+sdb_store_matcher_t *
+sdb_store_attr_matcher(const char *name, const char *value, _Bool re)
+{
+ if (! name)
+ return NULL;
+
+ if (re)
+ return M(sdb_object_create("attr-matcher", attr_type,
+ name, NULL, value));
+ return M(sdb_object_create("attr-matcher", attr_type,
+ name, value, NULL));
+} /* sdb_store_attr_matcher */
+
+sdb_store_matcher_t *
+sdb_store_lt_matcher(sdb_store_cond_t *cond)
+{
+ return M(sdb_object_create("lt-matcher", cond_type,
+ MATCHER_LT, cond));
+} /* sdb_store_lt_matcher */
+
+sdb_store_matcher_t *
+sdb_store_le_matcher(sdb_store_cond_t *cond)
+{
+ return M(sdb_object_create("le-matcher", cond_type,
+ MATCHER_LE, cond));
+} /* sdb_store_le_matcher */
+
+sdb_store_matcher_t *
+sdb_store_eq_matcher(sdb_store_cond_t *cond)
+{
+ return M(sdb_object_create("eq-matcher", cond_type,
+ MATCHER_EQ, cond));
+} /* sdb_store_eq_matcher */
+
+sdb_store_matcher_t *
+sdb_store_ge_matcher(sdb_store_cond_t *cond)
+{
+ return M(sdb_object_create("ge-matcher", cond_type,
+ MATCHER_GE, cond));
+} /* sdb_store_ge_matcher */
+
+sdb_store_matcher_t *
+sdb_store_gt_matcher(sdb_store_cond_t *cond)
+{
+ return M(sdb_object_create("gt-matcher", cond_type,
+ MATCHER_GT, cond));
+} /* sdb_store_gt_matcher */
+
+static sdb_store_matcher_t *
+parse_attr_cmp(const char *attr, const char *op, const sdb_data_t *value)
+{
+ sdb_store_matcher_t *(*matcher)(sdb_store_cond_t *) = NULL;
+ sdb_store_matcher_t *m;
+ sdb_store_cond_t *cond;
+ _Bool inv = 0;
+
+ /* TODO: this will reject any attributes called "name";
+ * use a different syntax for querying objects by name */
+ if (! strcasecmp(attr, "name"))
+ return NULL;
+
+ if (! strcasecmp(op, "<"))
+ matcher = sdb_store_lt_matcher;
+ else if (! strcasecmp(op, "<="))
+ matcher = sdb_store_le_matcher;
+ else if (! strcasecmp(op, "="))
+ matcher = sdb_store_eq_matcher;
+ else if (! strcasecmp(op, ">="))
+ matcher = sdb_store_ge_matcher;
+ else if (! strcasecmp(op, ">"))
+ matcher = sdb_store_gt_matcher;
+ else if (! strcasecmp(op, "!=")) {
+ matcher = sdb_store_eq_matcher;
+ inv = 1;
+ }
+ else
+ return NULL;
+
+ cond = sdb_store_attr_cond(attr, value);
+ if (! cond)
+ return NULL;
+
+ m = matcher(cond);
+ /* pass ownership to 'm' or destroy in case of an error */
+ sdb_object_deref(SDB_OBJ(cond));
+ if (! m)
+ return NULL;
+
+ if (inv) {
+ sdb_store_matcher_t *tmp;
+ tmp = sdb_store_inv_matcher(m);
+ /* pass ownership to the inverse matcher */
+ sdb_object_deref(SDB_OBJ(m));
+ m = tmp;
+ }
+ return m;
+} /* parse_attr_cmp */
+
+sdb_store_matcher_t *
+sdb_store_matcher_parse_cmp(const char *obj_type, const char *attr,
+ const char *op, const sdb_data_t *value)
+{
+ int type = -1;
+ _Bool inv = 0;
+ _Bool re = 0;
+
+ sdb_store_matcher_t *m = NULL;
+
+ if (! strcasecmp(obj_type, "host"))
+ type = SDB_HOST;
+ else if (! strcasecmp(obj_type, "service"))
+ type = SDB_SERVICE;
+ else if (! strcasecmp(obj_type, "attribute"))
+ type = SDB_ATTRIBUTE;
+ else
+ return NULL;
+
+ /* XXX: this code sucks! */
+ if (! strcasecmp(op, "=")) {
+ /* nothing to do */
+ }
+ else if (! strcasecmp(op, "!=")) {
+ inv = 1;
+ }
+ else if (! strcasecmp(op, "=~")) {
+ re = 1;
+ }
+ else if (! strcasecmp(op, "!~")) {
+ inv = 1;
+ re = 1;
+ }
+ else if (type == SDB_ATTRIBUTE)
+ return parse_attr_cmp(attr, op, value);
+ else
+ return NULL;
+
+ if (value->type != SDB_TYPE_STRING) {
+ if (type == SDB_ATTRIBUTE)
+ return parse_attr_cmp(attr, op, value);
+ return NULL;
+ }
+
+ if (! strcasecmp(attr, "name"))
+ m = sdb_store_name_matcher(type, value->data.string, re);
+ else if (type == SDB_ATTRIBUTE)
+ m = sdb_store_attr_matcher(attr, value->data.string, re);
+
+ if (! m)
+ return NULL;
+
+ if (inv) {
+ sdb_store_matcher_t *tmp;
+ tmp = sdb_store_inv_matcher(m);
+ /* pass ownership to the inverse matcher */
+ sdb_object_deref(SDB_OBJ(m));
+ m = tmp;
+ }
+ return m;
+} /* sdb_store_matcher_parse_cmp */
+
+sdb_store_matcher_t *
+sdb_store_dis_matcher(sdb_store_matcher_t *left, sdb_store_matcher_t *right)
+{
+ return M(sdb_object_create("dis-matcher", op_type, MATCHER_OR,
+ left, right));
+} /* sdb_store_dis_matcher */
+
+sdb_store_matcher_t *
+sdb_store_con_matcher(sdb_store_matcher_t *left, sdb_store_matcher_t *right)
+{
+ return M(sdb_object_create("con-matcher", op_type, MATCHER_AND,
+ left, right));
+} /* sdb_store_con_matcher */
+
+sdb_store_matcher_t *
+sdb_store_inv_matcher(sdb_store_matcher_t *m)
+{
+ return M(sdb_object_create("inv-matcher", uop_type, MATCHER_NOT, m));
+} /* sdb_store_inv_matcher */
+
+int
+sdb_store_matcher_matches(sdb_store_matcher_t *m, sdb_store_obj_t *obj)
+{
+ if (obj->type != SDB_HOST)
+ return 0;
+
+ /* "NULL" always matches */
+ if ((! m) || (! obj))
+ return 1;
+
+ if ((m->type < 0) || ((size_t)m->type >= SDB_STATIC_ARRAY_LEN(matchers)))
+ return 0;
+
+ return matchers[m->type](m, HOST(obj));
+} /* sdb_store_matcher_matches */
+
+char *
+sdb_store_matcher_tostring(sdb_store_matcher_t *m, char *buf, size_t buflen)
+{
+ if (! m)
+ return NULL;
+
+ if ((m->type < 0)
+ || (((size_t)m->type >= SDB_STATIC_ARRAY_LEN(matchers_tostring))))
+ return NULL;
+ return matchers_tostring[m->type](m, buf, buflen);
+} /* sdb_store_matcher_tostring */
+
+int
+sdb_store_lookup(sdb_store_matcher_t *m, sdb_store_lookup_cb cb,
+ void *user_data)
+{
+ lookup_iter_data_t data = { m, cb, user_data };
+
+ if (! cb)
+ return -1;
+ return sdb_store_iterate(lookup_iter, &data);
+} /* sdb_store_lookup */
/* vim: set tw=78 sw=4 ts=4 noexpandtab : */