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Diffstat (limited to 'contrib/dlz/modules/include/dlz_dbi.h')
| -rw-r--r-- | contrib/dlz/modules/include/dlz_dbi.h | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/contrib/dlz/modules/include/dlz_dbi.h b/contrib/dlz/modules/include/dlz_dbi.h new file mode 100644 index 0000000..10e274a --- /dev/null +++ b/contrib/dlz/modules/include/dlz_dbi.h @@ -0,0 +1,118 @@ +/* + * Copyright (C) 2002 Stichting NLnet, Netherlands, stichting@nlnet.nl. + * + * Permission to use, copy, modify, and 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. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND STICHTING NLNET + * DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL + * STICHTING NLNET 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. + * + * The development of Dynamically Loadable Zones (DLZ) for Bind 9 was + * conceived and contributed by Rob Butler. + * + * Permission to use, copy, modify, and 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. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND ROB BUTLER + * DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL + * ROB BUTLER 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 <dlz_minimal.h> +#include <dlz_list.h> +#include <dlz_pthread.h> + +#ifndef DLZ_DBI_H +#define DLZ_DBI_H 1 + +/* + * Types + */ +#define REQUIRE_CLIENT 0x01 +#define REQUIRE_QUERY 0x02 +#define REQUIRE_RECORD 0x04 +#define REQUIRE_ZONE 0x08 + +typedef struct query_segment query_segment_t; +typedef DLZ_LIST(query_segment_t) query_list_t; +typedef struct dbinstance dbinstance_t; +typedef DLZ_LIST(dbinstance_t) db_list_t; +typedef struct driverinstance driverinstance_t; + +/*% + * a query segment is all the text between our special tokens + * special tokens are %zone%, %record%, %client% + */ +struct query_segment { + void *cmd; + unsigned int strlen; + bool direct; + DLZ_LINK(query_segment_t) link; +}; + +/*% + * a database instance contains everything we need for running + * a query against the database. Using it each separate thread + * can dynamically construct a query and execute it against the + * database. The "instance_lock" and locking code in the driver's + * make sure no two threads try to use the same DBI at a time. + */ +struct dbinstance { + void *dbconn; + query_list_t *allnodes_q; + query_list_t *allowxfr_q; + query_list_t *authority_q; + query_list_t *findzone_q; + query_list_t *lookup_q; + query_list_t *countzone_q; + char *query_buf; + char *zone; + char *record; + char *client; + dlz_mutex_t lock; + DLZ_LINK(dbinstance_t) link; +}; + +/* + * Method declarations + */ + +void +destroy_querylist(query_list_t **querylist); + +isc_result_t +build_querylist(const char *query_str, char **zone, char **record, + char **client, query_list_t **querylist, unsigned int flags, + log_t log); + +char * +build_querystring(query_list_t *querylist); + +isc_result_t +build_dbinstance(const char *allnodes_str, const char *allowxfr_str, + const char *authority_str, const char *findzone_str, + const char *lookup_str, const char *countzone_str, + dbinstance_t **dbi, log_t log); + +void +destroy_dbinstance(dbinstance_t *dbi); + +char * +get_parameter_value(const char *input, const char* key); + +#endif /* DLZ_DBI_H */ |