1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302
|
/*
* Copyright (c) 2010 William Pitcock <nenolod@atheme.org>
* Rights to this code are as documented in doc/LICENSE.
*
* Platform-agnostic database backend layer.
*/
#include "atheme.h"
database_module_t *db_mod = NULL;
mowgli_patricia_t *db_types = NULL;
database_handle_t *
db_open(const char *filename, database_transaction_t txn)
{
return_val_if_fail(db_mod != NULL, NULL);
return_val_if_fail(db_mod->db_open != NULL, NULL);
return db_mod->db_open(filename, txn);
}
void
db_close(database_handle_t *db)
{
return_if_fail(db_mod != NULL);
return_if_fail(db_mod->db_close != NULL);
return db_mod->db_close(db);
}
void
db_parse(database_handle_t *db)
{
return_if_fail(db_mod != NULL);
return_if_fail(db_mod->db_parse != NULL);
return db_mod->db_parse(db);
}
bool
db_read_next_row(database_handle_t *db)
{
return_val_if_fail(db != NULL, NULL);
return_val_if_fail(db->vt != NULL, NULL);
return_val_if_fail(db->vt->read_next_row != NULL, NULL);
return db->vt->read_next_row(db);
}
const char *
db_read_word(database_handle_t *db)
{
return_val_if_fail(db != NULL, NULL);
return_val_if_fail(db->vt != NULL, NULL);
return_val_if_fail(db->vt->read_word != NULL, NULL);
return db->vt->read_word(db);
}
const char *
db_read_str(database_handle_t *db)
{
return_val_if_fail(db != NULL, NULL);
return_val_if_fail(db->vt != NULL, NULL);
return_val_if_fail(db->vt->read_str != NULL, NULL);
return db->vt->read_str(db);
}
bool
db_read_int(database_handle_t *db, int *r)
{
return_val_if_fail(db != NULL, false);
return_val_if_fail(db->vt != NULL, false);
return_val_if_fail(db->vt->read_int != NULL, false);
return db->vt->read_int(db, r);
}
bool
db_read_uint(database_handle_t *db, unsigned int *r)
{
return_val_if_fail(db != NULL, false);
return_val_if_fail(db->vt != NULL, false);
return_val_if_fail(db->vt->read_uint != NULL, false);
return db->vt->read_uint(db, r);
}
bool
db_read_time(database_handle_t *db, time_t *r)
{
return_val_if_fail(db != NULL, false);
return_val_if_fail(db->vt != NULL, false);
return_val_if_fail(db->vt->read_time != NULL, false);
return db->vt->read_time(db, r);
}
const char *
db_sread_word(database_handle_t *db)
{
const char *w = db_read_word(db);
if (!w)
{
slog(LG_ERROR, "db-sread-word: needed word at file %s line %d token %d", db->file, db->line, db->token);
slog(LG_ERROR, "db-sread-word: exiting to avoid data loss");
exit(EXIT_FAILURE);
}
return w;
}
const char *
db_sread_str(database_handle_t *db)
{
const char *w = db_read_str(db);
if (!w)
{
slog(LG_ERROR, "db-sread-multiword: needed multiword at file %s line %d token %d", db->file, db->line, db->token);
slog(LG_ERROR, "db-sread-multiword: exiting to avoid data loss");
exit(EXIT_FAILURE);
}
return w;
}
int
db_sread_int(database_handle_t *db)
{
int r;
bool ok = db_read_int(db, &r);
if (!ok)
{
slog(LG_ERROR, "db-read-int: needed int at file %s line %d token %d", db->file, db->line, db->token);
slog(LG_ERROR, "db-read-int: exiting to avoid data loss");
exit(EXIT_FAILURE);
}
return r;
}
unsigned int
db_sread_uint(database_handle_t *db)
{
unsigned int r;
bool ok = db_read_uint(db, &r);
if (!ok)
{
slog(LG_ERROR, "db-read-uint: needed int at file %s line %d token %d", db->file, db->line, db->token);
slog(LG_ERROR, "db-read-uint: exiting to avoid data loss");
exit(EXIT_FAILURE);
}
return r;
}
time_t
db_sread_time(database_handle_t *db)
{
time_t r;
bool ok = db_read_time(db, &r);
if (!ok)
{
slog(LG_ERROR, "db-read-time: needed int at file %s line %d token %d", db->file, db->line, db->token);
slog(LG_ERROR, "db-read-time: exiting to avoid data loss");
exit(EXIT_FAILURE);
}
return r;
}
bool
db_start_row(database_handle_t *db, const char *type)
{
return_val_if_fail(db != NULL, false);
return_val_if_fail(db->vt != NULL, false);
return_val_if_fail(db->vt->start_row != NULL, false);
return db->vt->start_row(db, type);
}
bool
db_write_word(database_handle_t *db, const char *word)
{
return_val_if_fail(db != NULL, false);
return_val_if_fail(db->vt != NULL, false);
return_val_if_fail(db->vt->write_word != NULL, false);
return db->vt->write_word(db, word);
}
bool
db_write_str(database_handle_t *db, const char *str)
{
return_val_if_fail(db != NULL, false);
return_val_if_fail(db->vt != NULL, false);
return_val_if_fail(db->vt->write_str != NULL, false);
return db->vt->write_str(db, str);
}
bool
db_write_int(database_handle_t *db, int num)
{
return_val_if_fail(db != NULL, false);
return_val_if_fail(db->vt != NULL, false);
return_val_if_fail(db->vt->write_int != NULL, false);
return db->vt->write_int(db, num);
}
bool
db_write_uint(database_handle_t *db, unsigned int num)
{
return_val_if_fail(db != NULL, false);
return_val_if_fail(db->vt != NULL, false);
return_val_if_fail(db->vt->write_uint != NULL, false);
return db->vt->write_uint(db, num);
}
bool
db_write_time(database_handle_t *db, time_t tm)
{
return_val_if_fail(db != NULL, false);
return_val_if_fail(db->vt != NULL, false);
return_val_if_fail(db->vt->write_time != NULL, false);
return db->vt->write_time(db, tm);
}
bool
db_commit_row(database_handle_t *db)
{
return_val_if_fail(db != NULL, false);
return_val_if_fail(db->vt != NULL, false);
return_val_if_fail(db->vt->commit_row != NULL, false);
return db->vt->commit_row(db);
}
void
db_register_type_handler(const char *type, database_handler_f fun)
{
return_if_fail(db_types != NULL);
return_if_fail(type != NULL);
return_if_fail(fun != NULL);
mowgli_patricia_add(db_types, type, fun);
}
void
db_unregister_type_handler(const char *type)
{
return_if_fail(db_types != NULL);
return_if_fail(type != NULL);
mowgli_patricia_delete(db_types, type);
}
void
db_process(database_handle_t *db, const char *type)
{
database_handler_f fun;
return_if_fail(db_types != NULL);
return_if_fail(db != NULL);
return_if_fail(type != NULL);
fun = mowgli_patricia_retrieve(db_types, type);
if (!fun)
{
fun = mowgli_patricia_retrieve(db_types, "???");
}
fun(db, type);
}
bool
db_write_format(database_handle_t *db, const char *fmt, ...)
{
va_list va;
char buf[BUFSIZE];
va_start(va, fmt);
vsnprintf(buf, BUFSIZE, fmt, va);
va_end(va);
return db_write_word(db, buf);
}
void
db_init(void)
{
db_types = mowgli_patricia_create(strcasecanon);
if (db_types == NULL)
{
slog(LG_ERROR, "db_init(): object allocator failure");
exit(EXIT_FAILURE);
}
}
|