diff options
Diffstat (limited to 'lib/ldb/ldb_sqlite3')
| -rw-r--r-- | lib/ldb/ldb_sqlite3/README | 7 | ||||
| -rw-r--r-- | lib/ldb/ldb_sqlite3/base160.c | 154 | ||||
| -rw-r--r-- | lib/ldb/ldb_sqlite3/ldb_sqlite3.c | 1958 | ||||
| -rw-r--r-- | lib/ldb/ldb_sqlite3/schema | 328 | ||||
| -rw-r--r-- | lib/ldb/ldb_sqlite3/trees.ps | 1760 |
5 files changed, 4207 insertions, 0 deletions
diff --git a/lib/ldb/ldb_sqlite3/README b/lib/ldb/ldb_sqlite3/README new file mode 100644 index 0000000..6cda0a7 --- /dev/null +++ b/lib/ldb/ldb_sqlite3/README @@ -0,0 +1,7 @@ +trees.ps contains an explanation of the Genealogical Representation of Trees +in Databases which is being used in ldb_sqlite3. Note that we use fgID +representation with 4 bytes per level, so we can represent 6.5E+08 subclasses +of any object class. This should be adequate for our purposes. :-) + +The following document is the primary basis for the schema currently being +used here: http://www.research.ibm.com/journal/sj/392/shi.html diff --git a/lib/ldb/ldb_sqlite3/base160.c b/lib/ldb/ldb_sqlite3/base160.c new file mode 100644 index 0000000..7ad39f7 --- /dev/null +++ b/lib/ldb/ldb_sqlite3/base160.c @@ -0,0 +1,154 @@ +/* + base160 code used by ldb_sqlite3 + + Copyright (C) 2004 Derrell Lipman + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 3 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with this library; if not, see <http://www.gnu.org/licenses/>. +*/ + + +/* + * ldb_sqlite3_base160() + * + * Convert an integer value to a string containing the base 160 representation + * of the integer. We always convert to a string representation that is 4 + * bytes in length, and we always null terminate. + * + * Parameters: + * val -- + * The value to be converted + * + * result -- + * Buffer in which the result is to be placed + * + * Returns: + * nothing + */ +static unsigned char base160tab[161] = +{ + 48 , 49 , 50 , 51 , 52 , 53 , 54 , 55 , 56 , 57 , /* 0-9 */ + 58 , 59 , 65 , 66 , 67 , 68 , 69 , 70 , 71 , 72 , /* : ; A-H */ + 73 , 74 , 75 , 76 , 77 , 78 , 79 , 80 , 81 , 82 , /* I-R */ + 83 , 84 , 85 , 86 , 87 , 88 , 89 , 90 , 97 , 98 , /* S-Z , a-b */ + 99 , 100, 101, 102, 103, 104, 105, 106, 107, 108, /* c-l */ + 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, /* m-v */ + 119, 120, 121, 122, 160, 161, 162, 163, 164, 165, /* w-z, latin1 */ + 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, /* latin1 */ + 176, 177, 178, 179, 180, 181, 182, 183, 184, 185, /* latin1 */ + 186, 187, 188, 189, 190, 191, 192, 193, 194, 195, /* latin1 */ + 196, 197, 198, 199, 200, 201, 202, 203, 204, 205, /* latin1 */ + 206, 207, 208, 209, 210, 211, 212, 213, 214, 215, /* latin1 */ + 216, 217, 218, 219, 220, 221, 222, 223, 224, 225, /* latin1 */ + 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, /* latin1 */ + 236, 237, 238, 239, 240, 241, 242, 243, 244, 245, /* latin1 */ + 246, 247, 248, 249, 250, 251, 252, 253, 254, 255, /* latin1 */ + '\0' +}; + + +/* + * lsqlite3_base160() + * + * Convert an unsigned long integer into a base160 representation of the + * number. + * + * Parameters: + * val -- + * value to be converted + * + * result -- + * character array, 5 bytes long, into which the base160 representation + * will be placed. The result will be a four-digit representation of the + * number (with leading zeros prepended as necessary), and null + * terminated. + * + * Returns: + * Nothing + */ +void +lsqlite3_base160(unsigned long val, + unsigned char result[5]) +{ + int i; + + for (i = 3; i >= 0; i--) { + + result[i] = base160tab[val % 160]; + val /= 160; + } + + result[4] = '\0'; +} + + +/* + * lsqlite3_base160Next() + * + * Retrieve the next-greater number in the base160 sequence for the terminal + * tree node (the last four digits). Only one tree level (four digits) are + * operated on. + * + * Parameters: + * base160 -- a character array containing either an empty string (in which + * case no operation is performed), or a string of base160 digits + * with a length of a multiple of four digits. + * + * Upon return, the trailing four digits (one tree level) will + * have been incremented by 1. + * + * Returns: + * base160 -- the modified array + */ +char * +lsqlite3_base160Next(char base160[]) +{ + int i; + int len; + unsigned char * pTab; + char * pBase160 = base160; + + /* + * We need a minimum of four digits, and we will always get a multiple of + * four digits. + */ + if ((len = strlen(pBase160)) >= 4) + { + pBase160 += strlen(pBase160) - 1; + + /* We only carry through four digits: one level in the tree */ + for (i = 0; i < 4; i++) { + + /* What base160 value does this digit have? */ + pTab = strchr(base160tab, *pBase160); + + /* Is there a carry? */ + if (pTab < base160tab + sizeof(base160tab) - 1) { + + /* Nope. Just increment this value and we're done. */ + *pBase160 = *++pTab; + break; + } else { + + /* + * There's a carry. This value gets base160tab[0], we + * decrement the buffer pointer to get the next higher-order + * digit, and continue in the loop. + */ + *pBase160-- = base160tab[0]; + } + } + } + + return base160; +} diff --git a/lib/ldb/ldb_sqlite3/ldb_sqlite3.c b/lib/ldb/ldb_sqlite3/ldb_sqlite3.c new file mode 100644 index 0000000..0f5abf8 --- /dev/null +++ b/lib/ldb/ldb_sqlite3/ldb_sqlite3.c @@ -0,0 +1,1958 @@ +/* + ldb database library + + Copyright (C) Derrell Lipman 2005 + Copyright (C) Simo Sorce 2005-2009 + + ** NOTE! The following LGPL license applies to the ldb + ** library. This does NOT imply that all of Samba is released + ** under the LGPL + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 3 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with this library; if not, see <http://www.gnu.org/licenses/>. +*/ + +/* + * Name: ldb + * + * Component: ldb sqlite3 backend + * + * Description: core files for SQLITE3 backend + * + * Author: Derrell Lipman (based on Andrew Tridgell's LDAP backend) + */ + +#include "ldb_module.h" + +#include <sqlite3.h> + +struct lsqlite3_private { + int trans_count; + char **options; + sqlite3 *sqlite; +}; + +struct lsql_context { + struct ldb_module *module; + struct ldb_request *req; + + /* search stuff */ + long long current_eid; + const char * const * attrs; + struct ldb_reply *ares; + + bool callback_failed; + struct tevent_timer *timeout_event; +}; + +/* + * Macros used throughout + */ + +#ifndef FALSE +# define FALSE (0) +# define TRUE (! FALSE) +#endif + +#define RESULT_ATTR_TABLE "temp_result_attrs" + + +/* for testing, define to nothing, (create non-temporary table) */ +#define TEMPTAB "TEMPORARY" + +/* + * Static variables + */ +sqlite3_stmt * stmtGetEID = NULL; + +static char *lsqlite3_tprintf(TALLOC_CTX *mem_ctx, const char *fmt, ...) +{ + char *str, *ret; + va_list ap; + + va_start(ap, fmt); + str = sqlite3_vmprintf(fmt, ap); + va_end(ap); + + if (str == NULL) return NULL; + + ret = talloc_strdup(mem_ctx, str); + if (ret == NULL) { + sqlite3_free(str); + return NULL; + } + + sqlite3_free(str); + return ret; +} + +static char base160tab[161] = { + 48 ,49 ,50 ,51 ,52 ,53 ,54 ,55 ,56 ,57 , /* 0-9 */ + 58 ,59 ,65 ,66 ,67 ,68 ,69 ,70 ,71 ,72 , /* : ; A-H */ + 73 ,74 ,75 ,76 ,77 ,78 ,79 ,80 ,81 ,82 , /* I-R */ + 83 ,84 ,85 ,86 ,87 ,88 ,89 ,90 ,97 ,98 , /* S-Z , a-b */ + 99 ,100,101,102,103,104,105,106,107,108, /* c-l */ + 109,110,111,112,113,114,115,116,117,118, /* m-v */ + 119,120,121,122,160,161,162,163,164,165, /* w-z, latin1 */ + 166,167,168,169,170,171,172,173,174,175, /* latin1 */ + 176,177,178,179,180,181,182,183,184,185, /* latin1 */ + 186,187,188,189,190,191,192,193,194,195, /* latin1 */ + 196,197,198,199,200,201,202,203,204,205, /* latin1 */ + 206,207,208,209,210,211,212,213,214,215, /* latin1 */ + 216,217,218,219,220,221,222,223,224,225, /* latin1 */ + 226,227,228,229,230,231,232,233,234,235, /* latin1 */ + 236,237,238,239,240,241,242,243,244,245, /* latin1 */ + 246,247,248,249,250,251,252,253,254,255, /* latin1 */ + '\0' +}; + + +/* + * base160() + * + * Convert an unsigned long integer into a base160 representation of the + * number. + * + * Parameters: + * val -- + * value to be converted + * + * result -- + * character array, 5 bytes long, into which the base160 representation + * will be placed. The result will be a four-digit representation of the + * number (with leading zeros prepended as necessary), and null + * terminated. + * + * Returns: + * Nothing + */ +static void +base160_sql(sqlite3_context * hContext, + int argc, + sqlite3_value ** argv) +{ + int i; + long long val; + char result[5]; + + val = sqlite3_value_int64(argv[0]); + + for (i = 3; i >= 0; i--) { + + result[i] = base160tab[val % 160]; + val /= 160; + } + + result[4] = '\0'; + + sqlite3_result_text(hContext, result, -1, SQLITE_TRANSIENT); +} + + +/* + * base160next_sql() + * + * This function enhances sqlite by adding a "base160_next()" function which is + * accessible via queries. + * + * Retrieve the next-greater number in the base160 sequence for the terminal + * tree node (the last four digits). Only one tree level (four digits) is + * operated on. + * + * Input: + * A character string: either an empty string (in which case no operation is + * performed), or a string of base160 digits with a length of a multiple of + * four digits. + * + * Output: + * Upon return, the trailing four digits (one tree level) will have been + * incremented by 1. + */ +static void +base160next_sql(sqlite3_context * hContext, + int argc, + sqlite3_value ** argv) +{ + int i; + int len; + char * pTab; + char * pBase160 = strdup((const char *)sqlite3_value_text(argv[0])); + char * pStart = pBase160; + + /* + * We need a minimum of four digits, and we will always get a multiple + * of four digits. + */ + if (pBase160 != NULL && + (len = strlen(pBase160)) >= 4 && + len % 4 == 0) { + + if (pBase160 == NULL) { + + sqlite3_result_null(hContext); + return; + } + + pBase160 += strlen(pBase160) - 1; + + /* We only carry through four digits: one level in the tree */ + for (i = 0; i < 4; i++) { + + /* What base160 value does this digit have? */ + pTab = strchr(base160tab, *pBase160); + + /* Is there a carry? */ + if (pTab < base160tab + sizeof(base160tab) - 1) { + + /* + * Nope. Just increment this value and we're + * done. + */ + *pBase160 = *++pTab; + break; + } else { + + /* + * There's a carry. This value gets + * base160tab[0], we decrement the buffer + * pointer to get the next higher-order digit, + * and continue in the loop. + */ + *pBase160-- = base160tab[0]; + } + } + + sqlite3_result_text(hContext, + pStart, + strlen(pStart), + free); + } else { + sqlite3_result_value(hContext, argv[0]); + if (pBase160 != NULL) { + free(pBase160); + } + } +} + +static char *parsetree_to_sql(struct ldb_module *module, + void *mem_ctx, + const struct ldb_parse_tree *t) +{ + struct ldb_context *ldb; + const struct ldb_schema_attribute *a; + struct ldb_val value, subval; + char *wild_card_string; + char *child, *tmp; + char *ret = NULL; + char *attr; + unsigned int i; + + ldb = ldb_module_get_ctx(module); + + switch(t->operation) { + case LDB_OP_AND: + + tmp = parsetree_to_sql(module, mem_ctx, t->u.list.elements[0]); + if (tmp == NULL) return NULL; + + for (i = 1; i < t->u.list.num_elements; i++) { + + child = parsetree_to_sql(module, mem_ctx, t->u.list.elements[i]); + if (child == NULL) return NULL; + + tmp = talloc_asprintf_append(tmp, " INTERSECT %s ", child); + if (tmp == NULL) return NULL; + } + + ret = talloc_asprintf(mem_ctx, "SELECT * FROM ( %s )\n", tmp); + + return ret; + + case LDB_OP_OR: + + tmp = parsetree_to_sql(module, mem_ctx, t->u.list.elements[0]); + if (tmp == NULL) return NULL; + + for (i = 1; i < t->u.list.num_elements; i++) { + + child = parsetree_to_sql(module, mem_ctx, t->u.list.elements[i]); + if (child == NULL) return NULL; + + tmp = talloc_asprintf_append(tmp, " UNION %s ", child); + if (tmp == NULL) return NULL; + } + + return talloc_asprintf(mem_ctx, "SELECT * FROM ( %s ) ", tmp); + + case LDB_OP_NOT: + + child = parsetree_to_sql(module, mem_ctx, t->u.isnot.child); + if (child == NULL) return NULL; + + return talloc_asprintf(mem_ctx, + "SELECT eid FROM ldb_entry " + "WHERE eid NOT IN ( %s ) ", child); + + case LDB_OP_EQUALITY: + /* + * For simple searches, we want to retrieve the list of EIDs that + * match the criteria. + */ + attr = ldb_attr_casefold(mem_ctx, t->u.equality.attr); + if (attr == NULL) return NULL; + a = ldb_schema_attribute_by_name(ldb, attr); + + /* Get a canonicalised copy of the data */ + a->syntax->canonicalise_fn(ldb, mem_ctx, &(t->u.equality.value), &value); + if (value.data == NULL) { + return NULL; + } + + if (strcasecmp(t->u.equality.attr, "dn") == 0) { + /* DN query is a special ldb case */ + const char *cdn = ldb_dn_get_casefold( + ldb_dn_new(mem_ctx, ldb, + (const char *)value.data)); + if (cdn == NULL) { + return NULL; + } + + return lsqlite3_tprintf(mem_ctx, + "SELECT eid FROM ldb_entry " + "WHERE norm_dn = '%q'", cdn); + + } else { + /* A normal query. */ + return lsqlite3_tprintf(mem_ctx, + "SELECT eid FROM ldb_attribute_values " + "WHERE norm_attr_name = '%q' " + "AND norm_attr_value = '%q'", + attr, + value.data); + + } + + case LDB_OP_SUBSTRING: + + wild_card_string = talloc_strdup(mem_ctx, + (t->u.substring.start_with_wildcard)?"*":""); + if (wild_card_string == NULL) return NULL; + + for (i = 0; t->u.substring.chunks[i]; i++) { + wild_card_string = talloc_asprintf_append(wild_card_string, "%s*", + t->u.substring.chunks[i]->data); + if (wild_card_string == NULL) return NULL; + } + + if ( ! t->u.substring.end_with_wildcard ) { + /* remove last wildcard */ + wild_card_string[strlen(wild_card_string) - 1] = '\0'; + } + + attr = ldb_attr_casefold(mem_ctx, t->u.substring.attr); + if (attr == NULL) return NULL; + a = ldb_schema_attribute_by_name(ldb, attr); + + subval.data = (void *)wild_card_string; + subval.length = strlen(wild_card_string) + 1; + + /* Get a canonicalised copy of the data */ + a->syntax->canonicalise_fn(ldb, mem_ctx, &(subval), &value); + if (value.data == NULL) { + return NULL; + } + + return lsqlite3_tprintf(mem_ctx, + "SELECT eid FROM ldb_attribute_values " + "WHERE norm_attr_name = '%q' " + "AND norm_attr_value GLOB '%q'", + attr, + value.data); + + case LDB_OP_GREATER: + attr = ldb_attr_casefold(mem_ctx, t->u.equality.attr); + if (attr == NULL) return NULL; + a = ldb_schema_attribute_by_name(ldb, attr); + + /* Get a canonicalised copy of the data */ + a->syntax->canonicalise_fn(ldb, mem_ctx, &(t->u.equality.value), &value); + if (value.data == NULL) { + return NULL; + } + + return lsqlite3_tprintf(mem_ctx, + "SELECT eid FROM ldb_attribute_values " + "WHERE norm_attr_name = '%q' " + "AND ldap_compare(norm_attr_value, '>=', '%q', '%q') ", + attr, + value.data, + attr); + + case LDB_OP_LESS: + attr = ldb_attr_casefold(mem_ctx, t->u.equality.attr); + if (attr == NULL) return NULL; + a = ldb_schema_attribute_by_name(ldb, attr); + + /* Get a canonicalised copy of the data */ + a->syntax->canonicalise_fn(ldb, mem_ctx, &(t->u.equality.value), &value); + if (value.data == NULL) { + return NULL; + } + + return lsqlite3_tprintf(mem_ctx, + "SELECT eid FROM ldb_attribute_values " + "WHERE norm_attr_name = '%q' " + "AND ldap_compare(norm_attr_value, '<=', '%q', '%q') ", + attr, + value.data, + attr); + + case LDB_OP_PRESENT: + if (strcasecmp(t->u.present.attr, "dn") == 0) { + return talloc_strdup(mem_ctx, "SELECT eid FROM ldb_entry"); + } + + attr = ldb_attr_casefold(mem_ctx, t->u.present.attr); + if (attr == NULL) return NULL; + + return lsqlite3_tprintf(mem_ctx, + "SELECT eid FROM ldb_attribute_values " + "WHERE norm_attr_name = '%q' ", + attr); + + case LDB_OP_APPROX: + attr = ldb_attr_casefold(mem_ctx, t->u.equality.attr); + if (attr == NULL) return NULL; + a = ldb_schema_attribute_by_name(ldb, attr); + + /* Get a canonicalised copy of the data */ + a->syntax->canonicalise_fn(ldb, mem_ctx, &(t->u.equality.value), &value); + if (value.data == NULL) { + return NULL; + } + + return lsqlite3_tprintf(mem_ctx, + "SELECT eid FROM ldb_attribute_values " + "WHERE norm_attr_name = '%q' " + "AND ldap_compare(norm_attr_value, '~%', 'q', '%q') ", + attr, + value.data, + attr); + + case LDB_OP_EXTENDED: +#warning "work out how to handle bitops" + return NULL; + + default: + break; + }; + + /* should never occur */ + abort(); + return NULL; +} + +/* + * query_int() + * + * This function is used for the common case of queries that return a single + * integer value. + * + * NOTE: If more than one value is returned by the query, all but the first + * one will be ignored. + */ +static int +query_int(const struct lsqlite3_private * lsqlite3, + long long * pRet, + const char * pSql, + ...) +{ + int ret; + int bLoop; + char * p; + sqlite3_stmt * pStmt; + va_list args; + + /* Begin access to variable argument list */ + va_start(args, pSql); + + /* Format the query */ + if ((p = sqlite3_vmprintf(pSql, args)) == NULL) { + va_end(args); + return SQLITE_NOMEM; + } + + /* + * Prepare and execute the SQL statement. Loop allows retrying on + * certain errors, e.g. SQLITE_SCHEMA occurs if the schema changes, + * requiring retrying the operation. + */ + for (bLoop = TRUE; bLoop; ) { + + /* Compile the SQL statement into sqlite virtual machine */ + if ((ret = sqlite3_prepare(lsqlite3->sqlite, + p, + -1, + &pStmt, + NULL)) == SQLITE_SCHEMA) { + if (stmtGetEID != NULL) { + sqlite3_finalize(stmtGetEID); + stmtGetEID = NULL; + } + continue; + } else if (ret != SQLITE_OK) { + break; + } + + /* One row expected */ + if ((ret = sqlite3_step(pStmt)) == SQLITE_SCHEMA) { + if (stmtGetEID != NULL) { + sqlite3_finalize(stmtGetEID); + stmtGetEID = NULL; + } + (void) sqlite3_finalize(pStmt); + continue; + } else if (ret != SQLITE_ROW) { + (void) sqlite3_finalize(pStmt); + break; + } + + /* Get the value to be returned */ + *pRet = sqlite3_column_int64(pStmt, 0); + + /* Free the virtual machine */ + if ((ret = sqlite3_finalize(pStmt)) == SQLITE_SCHEMA) { + if (stmtGetEID != NULL) { + sqlite3_finalize(stmtGetEID); + stmtGetEID = NULL; + } + continue; + } else if (ret != SQLITE_OK) { + (void) sqlite3_finalize(pStmt); + break; + } + + /* + * Normal condition is only one time through loop. Loop is + * rerun in error conditions, via "continue", above. + */ + bLoop = FALSE; + } + + /* All done with variable argument list */ + va_end(args); + + + /* Free the memory we allocated for our query string */ + sqlite3_free(p); + + return ret; +} + +/* + * This is a bad hack to support ldap style comparisons within sqlite. + * val is the attribute in the row currently under test + * func is the desired test "<=" ">=" "~" ":" + * cmp is the value to compare against (eg: "test") + * attr is the attribute name the value of which we want to test + */ + +static void lsqlite3_compare(sqlite3_context *ctx, int argc, + sqlite3_value **argv) +{ + struct ldb_context *ldb = (struct ldb_context *)sqlite3_user_data(ctx); + const char *val = (const char *)sqlite3_value_text(argv[0]); + const char *func = (const char *)sqlite3_value_text(argv[1]); + const char *cmp = (const char *)sqlite3_value_text(argv[2]); + const char *attr = (const char *)sqlite3_value_text(argv[3]); + const struct ldb_schema_attribute *a; + struct ldb_val valX; + struct ldb_val valY; + int ret; + + switch (func[0]) { + /* greater */ + case '>': /* >= */ + a = ldb_schema_attribute_by_name(ldb, attr); + valX.data = (uint8_t *)cmp; + valX.length = strlen(cmp); + valY.data = (uint8_t *)val; + valY.length = strlen(val); + ret = a->syntax->comparison_fn(ldb, ldb, &valY, &valX); + if (ret >= 0) + sqlite3_result_int(ctx, 1); + else + sqlite3_result_int(ctx, 0); + return; + + /* lesser */ + case '<': /* <= */ + a = ldb_schema_attribute_by_name(ldb, attr); + valX.data = (uint8_t *)cmp; + valX.length = strlen(cmp); + valY.data = (uint8_t *)val; + valY.length = strlen(val); + ret = a->syntax->comparison_fn(ldb, ldb, &valY, &valX); + if (ret <= 0) + sqlite3_result_int(ctx, 1); + else + sqlite3_result_int(ctx, 0); + return; + + /* approx */ + case '~': + /* TODO */ + sqlite3_result_int(ctx, 0); + return; + + /* bitops */ + case ':': + /* TODO */ + sqlite3_result_int(ctx, 0); + return; + + default: + break; + } + + sqlite3_result_error(ctx, "Value must start with a special operation char (<>~:)!", -1); + return; +} + + +/* rename a record */ +static int lsqlite3_safe_rollback(sqlite3 *sqlite) +{ + char *errmsg; + int ret; + + /* execute */ + ret = sqlite3_exec(sqlite, "ROLLBACK;", NULL, NULL, &errmsg); + if (ret != SQLITE_OK) { + if (errmsg) { + printf("lsqlite3_safe_rollback: Error: %s\n", errmsg); + free(errmsg); + } + return -1; + } + + return 0; +} + +/* return an eid as result */ +static int lsqlite3_eid_callback(void *result, int col_num, char **cols, char **names) +{ + long long *eid = (long long *)result; + + if (col_num != 1) return SQLITE_ABORT; + if (strcasecmp(names[0], "eid") != 0) return SQLITE_ABORT; + + *eid = atoll(cols[0]); + return SQLITE_OK; +} + +/* + * add a single set of ldap message values to a ldb_message + */ +static int lsqlite3_search_callback(void *result, int col_num, char **cols, char **names) +{ + struct ldb_context *ldb; + struct lsql_context *ac; + struct ldb_message *msg; + long long eid; + unsigned int i; + int ret; + + ac = talloc_get_type(result, struct lsql_context); + ldb = ldb_module_get_ctx(ac->module); + + /* eid, dn, attr_name, attr_value */ + if (col_num != 4) return SQLITE_ABORT; + + eid = atoll(cols[0]); + + if (ac->ares) { + msg = ac->ares->message; + } + + if (eid != ac->current_eid) { /* here begin a new entry */ + + /* call the async callback for the last entry + * except the first time */ + if (ac->current_eid != 0) { + ret = ldb_msg_normalize(ldb, ac->req, msg, &msg); + if (ret != LDB_SUCCESS) { + return SQLITE_ABORT; + } + + ret = ldb_module_send_entry(ac->req, msg, NULL); + if (ret != LDB_SUCCESS) { + ac->callback_failed = true; + /* free msg object */ + TALLOC_FREE(msg); + return SQLITE_ABORT; + } + + /* free msg object */ + TALLOC_FREE(msg); + } + + /* start over */ + ac->ares = talloc_zero(ac, struct ldb_reply); + if (!ac->ares) return SQLITE_ABORT; + + msg = ldb_msg_new(ac->ares); + if (!msg) return SQLITE_ABORT; + + ac->ares->type = LDB_REPLY_ENTRY; + ac->current_eid = eid; + } + + if (msg->dn == NULL) { + msg->dn = ldb_dn_new(msg, ldb, cols[1]); + if (msg->dn == NULL) + return SQLITE_ABORT; + } + + if (ac->attrs) { + int found = 0; + for (i = 0; ac->attrs[i]; i++) { + if (strcasecmp(cols[2], ac->attrs[i]) == 0) { + found = 1; + break; + } + } + if (!found) goto done; + } + + if (ldb_msg_add_string(msg, cols[2], cols[3]) != 0) { + return SQLITE_ABORT; + } + +done: + ac->ares->message = msg; + return SQLITE_OK; +} + + +/* + * lsqlite3_get_eid() + * lsqlite3_get_eid_ndn() + * + * These functions are used for the very common case of retrieving an EID value + * given a (normalized) DN. + */ + +static long long lsqlite3_get_eid_ndn(sqlite3 *sqlite, void *mem_ctx, const char *norm_dn) +{ + char *errmsg; + char *query; + long long eid = -1; + long long ret; + + /* get object eid */ + query = lsqlite3_tprintf(mem_ctx, "SELECT eid " + "FROM ldb_entry " + "WHERE norm_dn = '%q';", norm_dn); + if (query == NULL) return -1; + + ret = sqlite3_exec(sqlite, query, lsqlite3_eid_callback, &eid, &errmsg); + if (ret != SQLITE_OK) { + if (errmsg) { + printf("lsqlite3_get_eid: Fatal Error: %s\n", errmsg); + free(errmsg); + } + return -1; + } + + return eid; +} + +static long long lsqlite3_get_eid(struct lsqlite3_private *lsqlite3, + struct ldb_dn *dn) +{ + TALLOC_CTX *local_ctx; + long long eid = -1; + char *cdn; + + /* ignore ltdb specials */ + if (ldb_dn_is_special(dn)) { + return -1; + } + + /* create a local ctx */ + local_ctx = talloc_named(lsqlite3, 0, "lsqlite3_get_eid local context"); + if (local_ctx == NULL) { + return -1; + } + + cdn = ldb_dn_alloc_casefold(local_ctx, dn); + if (!cdn) goto done; + + eid = lsqlite3_get_eid_ndn(lsqlite3->sqlite, local_ctx, cdn); + +done: + talloc_free(local_ctx); + return eid; +} + +/* + * Interface functions referenced by lsqlite3_ops + */ + +/* search for matching records, by tree */ +int lsql_search(struct lsql_context *ctx) +{ + struct ldb_module *module = ctx->module; + struct ldb_request *req = ctx->req; + struct lsqlite3_private *lsqlite3; + struct ldb_context *ldb; + char *norm_basedn; + char *sqlfilter; + char *errmsg; + char *query = NULL; + int ret; + + ldb = ldb_module_get_ctx(module); + lsqlite3 = talloc_get_type(ldb_module_get_private(module), + struct lsqlite3_private); + + if ((( ! ldb_dn_is_valid(req->op.search.base)) || + ldb_dn_is_null(req->op.search.base)) && + (req->op.search.scope == LDB_SCOPE_BASE || + req->op.search.scope == LDB_SCOPE_ONELEVEL)) { + return LDB_ERR_OPERATIONS_ERROR; + } + + if (req->op.search.base) { + norm_basedn = ldb_dn_alloc_casefold(ctx, req->op.search.base); + if (norm_basedn == NULL) { + return LDB_ERR_OPERATIONS_ERROR; + } + } else norm_basedn = talloc_strdup(ctx, ""); + + /* Convert filter into a series of SQL conditions (constraints) */ + sqlfilter = parsetree_to_sql(module, ctx, req->op.search.tree); + + switch(req->op.search.scope) { + case LDB_SCOPE_DEFAULT: + case LDB_SCOPE_SUBTREE: + if (*norm_basedn != '\0') { + query = lsqlite3_tprintf(ctx, + "SELECT entry.eid,\n" + " entry.dn,\n" + " av.attr_name,\n" + " av.attr_value\n" + " FROM ldb_entry AS entry\n" + + " LEFT OUTER JOIN ldb_attribute_values AS av\n" + " ON av.eid = entry.eid\n" + + " WHERE entry.eid IN\n" + " (SELECT DISTINCT ldb_entry.eid\n" + " FROM ldb_entry\n" + " WHERE (ldb_entry.norm_dn GLOB('*,%q')\n" + " OR ldb_entry.norm_dn = '%q')\n" + " AND ldb_entry.eid IN\n" + " (%s)\n" + " )\n" + + " ORDER BY entry.eid ASC;", + norm_basedn, + norm_basedn, + sqlfilter); + } else { + query = lsqlite3_tprintf(ctx, + "SELECT entry.eid,\n" + " entry.dn,\n" + " av.attr_name,\n" + " av.attr_value\n" + " FROM ldb_entry AS entry\n" + + " LEFT OUTER JOIN ldb_attribute_values AS av\n" + " ON av.eid = entry.eid\n" + + " WHERE entry.eid IN\n" + " (SELECT DISTINCT ldb_entry.eid\n" + " FROM ldb_entry\n" + " WHERE ldb_entry.eid IN\n" + " (%s)\n" + " )\n" + + " ORDER BY entry.eid ASC;", + sqlfilter); + } + + break; + + case LDB_SCOPE_BASE: + query = lsqlite3_tprintf(ctx, + "SELECT entry.eid,\n" + " entry.dn,\n" + " av.attr_name,\n" + " av.attr_value\n" + " FROM ldb_entry AS entry\n" + + " LEFT OUTER JOIN ldb_attribute_values AS av\n" + " ON av.eid = entry.eid\n" + + " WHERE entry.eid IN\n" + " (SELECT DISTINCT ldb_entry.eid\n" + " FROM ldb_entry\n" + " WHERE ldb_entry.norm_dn = '%q'\n" + " AND ldb_entry.eid IN\n" + " (%s)\n" + " )\n" + + " ORDER BY entry.eid ASC;", + norm_basedn, + sqlfilter); + break; + + case LDB_SCOPE_ONELEVEL: + query = lsqlite3_tprintf(ctx, + "SELECT entry.eid,\n" + " entry.dn,\n" + " av.attr_name,\n" + " av.attr_value\n" + " FROM ldb_entry AS entry\n" + + " LEFT OUTER JOIN ldb_attribute_values AS av\n" + " ON av.eid = entry.eid\n" + + " WHERE entry.eid IN\n" + " (SELECT DISTINCT ldb_entry.eid\n" + " FROM ldb_entry\n" + " WHERE norm_dn GLOB('*,%q')\n" + " AND NOT norm_dn GLOB('*,*,%q')\n" + " AND ldb_entry.eid IN\n(%s)\n" + " )\n" + + " ORDER BY entry.eid ASC;", + norm_basedn, + norm_basedn, + sqlfilter); + break; + } + + if (query == NULL) { + return LDB_ERR_OPERATIONS_ERROR; + } + + /* * / + printf ("%s\n", query); + / * */ + + ctx->current_eid = 0; + ctx->attrs = req->op.search.attrs; + ctx->ares = NULL; + + ldb_request_set_state(req, LDB_ASYNC_PENDING); + + ret = sqlite3_exec(lsqlite3->sqlite, query, lsqlite3_search_callback, ctx, &errmsg); + if (ret != SQLITE_OK) { + if (errmsg) { + ldb_set_errstring(ldb, errmsg); + free(errmsg); + } + return LDB_ERR_OPERATIONS_ERROR; + } + + /* complete the last message if any */ + if (ctx->ares) { + ret = ldb_msg_normalize(ldb, ctx->ares, + ctx->ares->message, + &ctx->ares->message); + if (ret != LDB_SUCCESS) { + return LDB_ERR_OPERATIONS_ERROR; + } + + ret = ldb_module_send_entry(req, ctx->ares->message, NULL); + if (ret != LDB_SUCCESS) { + return ret; + } + } + + + return LDB_SUCCESS; +} + +/* add a record */ +static int lsql_add(struct lsql_context *ctx) +{ + struct ldb_module *module = ctx->module; + struct ldb_request *req = ctx->req; + struct lsqlite3_private *lsqlite3; + struct ldb_context *ldb; + struct ldb_message *msg = req->op.add.message; + long long eid; + char *dn, *ndn; + char *errmsg; + char *query; + unsigned int i; + int ret; + + ldb = ldb_module_get_ctx(module); + lsqlite3 = talloc_get_type(ldb_module_get_private(module), + struct lsqlite3_private); + + /* See if this is an ltdb special */ + if (ldb_dn_is_special(msg->dn)) { +/* + struct ldb_dn *c; + c = ldb_dn_new(local_ctx, ldb, "@INDEXLIST"); + if (ldb_dn_compare(ldb, msg->dn, c) == 0) { +#warning "should we handle indexes somehow ?" + ret = LDB_ERR_UNWILLING_TO_PERFORM; + goto done; + } +*/ + /* Others return an error */ + return LDB_ERR_UNWILLING_TO_PERFORM; + } + + /* create linearized and normalized dns */ + dn = ldb_dn_alloc_linearized(ctx, msg->dn); + ndn = ldb_dn_alloc_casefold(ctx, msg->dn); + if (dn == NULL || ndn == NULL) { + return LDB_ERR_OPERATIONS_ERROR; + } + + query = lsqlite3_tprintf(ctx, + /* Add new entry */ + "INSERT OR ABORT INTO ldb_entry " + "('dn', 'norm_dn') " + "VALUES ('%q', '%q');", + dn, ndn); + if (query == NULL) { + return LDB_ERR_OPERATIONS_ERROR; + } + + ret = sqlite3_exec(lsqlite3->sqlite, query, NULL, NULL, &errmsg); + if (ret != SQLITE_OK) { + if (errmsg) { + ldb_set_errstring(ldb, errmsg); + free(errmsg); + } + return LDB_ERR_OPERATIONS_ERROR; + } + + eid = lsqlite3_get_eid_ndn(lsqlite3->sqlite, ctx, ndn); + if (eid == -1) { + return LDB_ERR_OPERATIONS_ERROR; + } + + for (i = 0; i < msg->num_elements; i++) { + const struct ldb_message_element *el = &msg->elements[i]; + const struct ldb_schema_attribute *a; + char *attr; + unsigned int j; + + /* Get a case-folded copy of the attribute name */ + attr = ldb_attr_casefold(ctx, el->name); + if (attr == NULL) { + return LDB_ERR_OPERATIONS_ERROR; + } + + a = ldb_schema_attribute_by_name(ldb, el->name); + + if (el->num_value == 0) { + ldb_asprintf_errstring(ldb, "attribute %s on %s specified, but with 0 values (illegal)", + el->name, ldb_dn_get_linearized(msg->dn)); + return LDB_ERR_CONSTRAINT_VIOLATION; + } + + /* For each value of the specified attribute name... */ + for (j = 0; j < el->num_values; j++) { + struct ldb_val value; + char *insert; + + /* Get a canonicalised copy of the data */ + a->syntax->canonicalise_fn(ldb, ctx, &(el->values[j]), &value); + if (value.data == NULL) { + return LDB_ERR_OPERATIONS_ERROR; + } + + insert = lsqlite3_tprintf(ctx, + "INSERT OR ROLLBACK INTO ldb_attribute_values " + "('eid', 'attr_name', 'norm_attr_name'," + " 'attr_value', 'norm_attr_value') " + "VALUES ('%lld', '%q', '%q', '%q', '%q');", + eid, el->name, attr, + el->values[j].data, value.data); + if (insert == NULL) { + return LDB_ERR_OPERATIONS_ERROR; + } + + ret = sqlite3_exec(lsqlite3->sqlite, insert, NULL, NULL, &errmsg); + if (ret != SQLITE_OK) { + if (errmsg) { + ldb_set_errstring(ldb, errmsg); + free(errmsg); + } + return LDB_ERR_OPERATIONS_ERROR; + } + } + } + + return LDB_SUCCESS; +} + +/* modify a record */ +static int lsql_modify(struct lsql_context *ctx) +{ + struct ldb_module *module = ctx->module; + struct ldb_request *req = ctx->req; + struct lsqlite3_private *lsqlite3; + struct ldb_context *ldb; + struct ldb_message *msg = req->op.mod.message; + long long eid; + char *errmsg; + unsigned int i; + int ret; + + ldb = ldb_module_get_ctx(module); + lsqlite3 = talloc_get_type(ldb_module_get_private(module), + struct lsqlite3_private); + + /* See if this is an ltdb special */ + if (ldb_dn_is_special(msg->dn)) { + /* Others return an error */ + return LDB_ERR_UNWILLING_TO_PERFORM; + } + + eid = lsqlite3_get_eid(lsqlite3, msg->dn); + if (eid == -1) { + return LDB_ERR_OPERATIONS_ERROR; + } + + for (i = 0; i < msg->num_elements; i++) { + const struct ldb_message_element *el = &msg->elements[i]; + const struct ldb_schema_attribute *a; + unsigned int flags = el->flags & LDB_FLAG_MOD_MASK; + char *attr; + char *mod; + unsigned int j; + + /* Get a case-folded copy of the attribute name */ + attr = ldb_attr_casefold(ctx, el->name); + if (attr == NULL) { + return LDB_ERR_OPERATIONS_ERROR; + } + + a = ldb_schema_attribute_by_name(ldb, el->name); + + switch (flags) { + + case LDB_FLAG_MOD_REPLACE: + struct ldb_val *duplicate = NULL; + + ret = ldb_msg_find_duplicate_val(ldb, el, el, + &duplicate, 0); + if (ret != LDB_SUCCESS) { + return ret; + } + if (duplicate != NULL) { + ldb_asprintf_errstring( + ldb, + "attribute '%s': value '%.*s' " + "on '%s' provided more than " + "once in REPLACE", + el->name, + (int)duplicate->length, + duplicate->data, + ldb_dn_get_linearized(msg2->dn)); + return LDB_ERR_ATTRIBUTE_OR_VALUE_EXISTS; + } + + /* remove all attributes before adding the replacements */ + mod = lsqlite3_tprintf(ctx, + "DELETE FROM ldb_attribute_values " + "WHERE eid = '%lld' " + "AND norm_attr_name = '%q';", + eid, attr); + if (mod == NULL) { + return LDB_ERR_OPERATIONS_ERROR; + } + + ret = sqlite3_exec(lsqlite3->sqlite, mod, NULL, NULL, &errmsg); + if (ret != SQLITE_OK) { + if (errmsg) { + ldb_set_errstring(ldb, errmsg); + free(errmsg); + } + return LDB_ERR_OPERATIONS_ERROR; + } + + /* MISSING break is INTENTIONAL */ + + case LDB_FLAG_MOD_ADD: + + if (el->num_values == 0) { + ldb_asprintf_errstring(ldb, "attribute %s on %s specified, but with 0 values (illigal)", + el->name, ldb_dn_get_linearized(msg->dn)); + return LDB_ERR_CONSTRAINT_VIOLATION; + } + + /* For each value of the specified attribute name... */ + for (j = 0; j < el->num_values; j++) { + struct ldb_val value; + + /* Get a canonicalised copy of the data */ + a->syntax->canonicalise_fn(ldb, ctx, &(el->values[j]), &value); + if (value.data == NULL) { + return LDB_ERR_OPERATIONS_ERROR; + } + + mod = lsqlite3_tprintf(ctx, + "INSERT OR ROLLBACK INTO ldb_attribute_values " + "('eid', 'attr_name', 'norm_attr_name'," + " 'attr_value', 'norm_attr_value') " + "VALUES ('%lld', '%q', '%q', '%q', '%q');", + eid, el->name, attr, + el->values[j].data, value.data); + + if (mod == NULL) { + return LDB_ERR_OPERATIONS_ERROR; + } + + ret = sqlite3_exec(lsqlite3->sqlite, mod, NULL, NULL, &errmsg); + if (ret != SQLITE_OK) { + if (errmsg) { + ldb_set_errstring(ldb, errmsg); + free(errmsg); + } + return LDB_ERR_OPERATIONS_ERROR; + } + } + + break; + + case LDB_FLAG_MOD_DELETE: +#warning "We should throw an error if the attribute we are trying to delete does not exist!" + if (el->num_values == 0) { + mod = lsqlite3_tprintf(ctx, + "DELETE FROM ldb_attribute_values " + "WHERE eid = '%lld' " + "AND norm_attr_name = '%q';", + eid, attr); + if (mod == NULL) { + return LDB_ERR_OPERATIONS_ERROR; + } + + ret = sqlite3_exec(lsqlite3->sqlite, mod, NULL, NULL, &errmsg); + if (ret != SQLITE_OK) { + if (errmsg) { + ldb_set_errstring(ldb, errmsg); + free(errmsg); + } + return LDB_ERR_OPERATIONS_ERROR; + } + } + + /* For each value of the specified attribute name... */ + for (j = 0; j < el->num_values; j++) { + struct ldb_val value; + + /* Get a canonicalised copy of the data */ + a->syntax->canonicalise_fn(ldb, ctx, &(el->values[j]), &value); + if (value.data == NULL) { + return LDB_ERR_OPERATIONS_ERROR; + } + + mod = lsqlite3_tprintf(ctx, + "DELETE FROM ldb_attribute_values " + "WHERE eid = '%lld' " + "AND norm_attr_name = '%q' " + "AND norm_attr_value = '%q';", + eid, attr, value.data); + + if (mod == NULL) { + return LDB_ERR_OPERATIONS_ERROR; + } + + ret = sqlite3_exec(lsqlite3->sqlite, mod, NULL, NULL, &errmsg); + if (ret != SQLITE_OK) { + if (errmsg) { + ldb_set_errstring(ldb, errmsg); + free(errmsg); + } + return LDB_ERR_OPERATIONS_ERROR; + } + } + + break; + } + } + + return LDB_SUCCESS; +} + +/* delete a record */ +static int lsql_delete(struct lsql_context *ctx) +{ + struct ldb_module *module = ctx->module; + struct ldb_request *req = ctx->req; + struct lsqlite3_private *lsqlite3; + struct ldb_context *ldb; + long long eid; + char *errmsg; + char *query; + int ret; + + ldb = ldb_module_get_ctx(module); + lsqlite3 = talloc_get_type(ldb_module_get_private(module), + struct lsqlite3_private); + + eid = lsqlite3_get_eid(lsqlite3, req->op.del.dn); + if (eid == -1) { + return LDB_ERR_OPERATIONS_ERROR; + } + + query = lsqlite3_tprintf(ctx, + /* Delete entry */ + "DELETE FROM ldb_entry WHERE eid = %lld; " + /* Delete attributes */ + "DELETE FROM ldb_attribute_values WHERE eid = %lld; ", + eid, eid); + if (query == NULL) { + return LDB_ERR_OPERATIONS_ERROR; + } + + ret = sqlite3_exec(lsqlite3->sqlite, query, NULL, NULL, &errmsg); + if (ret != SQLITE_OK) { + if (errmsg) { + ldb_set_errstring(ldb, errmsg); + free(errmsg); + } + return LDB_ERR_OPERATIONS_ERROR; + } + + return LDB_SUCCESS; +} + +/* rename a record */ +static int lsql_rename(struct lsql_context *ctx) +{ + struct ldb_module *module = ctx->module; + struct ldb_request *req = ctx->req; + struct lsqlite3_private *lsqlite3; + struct ldb_context *ldb; + char *new_dn, *new_cdn, *old_cdn; + char *errmsg; + char *query; + int ret; + + ldb = ldb_module_get_ctx(module); + lsqlite3 = talloc_get_type(ldb_module_get_private(module), + struct lsqlite3_private); + + /* create linearized and normalized dns */ + old_cdn = ldb_dn_alloc_casefold(ctx, req->op.rename.olddn); + new_cdn = ldb_dn_alloc_casefold(ctx, req->op.rename.newdn); + new_dn = ldb_dn_alloc_linearized(ctx, req->op.rename.newdn); + if (old_cdn == NULL || new_cdn == NULL || new_dn == NULL) { + return LDB_ERR_OPERATIONS_ERROR; + } + + /* build the SQL query */ + query = lsqlite3_tprintf(ctx, + "UPDATE ldb_entry SET dn = '%q', norm_dn = '%q' " + "WHERE norm_dn = '%q';", + new_dn, new_cdn, old_cdn); + if (query == NULL) { + return LDB_ERR_OPERATIONS_ERROR; + } + + /* execute */ + ret = sqlite3_exec(lsqlite3->sqlite, query, NULL, NULL, &errmsg); + if (ret != SQLITE_OK) { + if (errmsg) { + ldb_set_errstring(ldb, errmsg); + free(errmsg); + } + return LDB_ERR_OPERATIONS_ERROR; + } + + return LDB_SUCCESS; +} + +static int lsql_start_trans(struct ldb_module * module) +{ + int ret; + char *errmsg; + struct lsqlite3_private *lsqlite3; + + lsqlite3 = talloc_get_type(ldb_module_get_private(module), + struct lsqlite3_private); + + if (lsqlite3->trans_count == 0) { + ret = sqlite3_exec(lsqlite3->sqlite, "BEGIN IMMEDIATE;", NULL, NULL, &errmsg); + if (ret != SQLITE_OK) { + if (errmsg) { + printf("lsqlite3_start_trans: error: %s\n", errmsg); + free(errmsg); + } + return -1; + } + }; + + lsqlite3->trans_count++; + + return 0; +} + +static int lsql_end_trans(struct ldb_module *module) +{ + int ret; + char *errmsg; + struct lsqlite3_private *lsqlite3; + + lsqlite3 = talloc_get_type(ldb_module_get_private(module), + struct lsqlite3_private); + + if (lsqlite3->trans_count > 0) { + lsqlite3->trans_count--; + } else return -1; + + if (lsqlite3->trans_count == 0) { + ret = sqlite3_exec(lsqlite3->sqlite, "COMMIT;", NULL, NULL, &errmsg); + if (ret != SQLITE_OK) { + if (errmsg) { + printf("lsqlite3_end_trans: error: %s\n", errmsg); + free(errmsg); + } + return -1; + } + } + + return 0; +} + +static int lsql_del_trans(struct ldb_module *module) +{ + struct lsqlite3_private *lsqlite3; + + lsqlite3 = talloc_get_type(ldb_module_get_private(module), + struct lsqlite3_private); + + if (lsqlite3->trans_count > 0) { + lsqlite3->trans_count--; + } else return -1; + + if (lsqlite3->trans_count == 0) { + return lsqlite3_safe_rollback(lsqlite3->sqlite); + } + + return -1; +} + +static int destructor(struct lsqlite3_private *lsqlite3) +{ + if (lsqlite3->sqlite) { + sqlite3_close(lsqlite3->sqlite); + } + return 0; +} + +static void lsql_request_done(struct lsql_context *ctx, int error) +{ + struct ldb_context *ldb; + struct ldb_request *req; + struct ldb_reply *ares; + + ldb = ldb_module_get_ctx(ctx->module); + req = ctx->req; + + /* if we already returned an error just return */ + if (ldb_request_get_status(req) != LDB_SUCCESS) { + return; + } + + ares = talloc_zero(req, struct ldb_reply); + if (!ares) { + ldb_oom(ldb); + req->callback(req, NULL); + return; + } + ares->type = LDB_REPLY_DONE; + ares->error = error; + + req->callback(req, ares); +} + +static void lsql_timeout(struct tevent_context *ev, + struct tevent_timer *te, + struct timeval t, + void *private_data) +{ + struct lsql_context *ctx; + ctx = talloc_get_type(private_data, struct lsql_context); + + lsql_request_done(ctx, LDB_ERR_TIME_LIMIT_EXCEEDED); +} + +static void lsql_callback(struct tevent_context *ev, + struct tevent_timer *te, + struct timeval t, + void *private_data) +{ + struct lsql_context *ctx; + int ret; + + ctx = talloc_get_type(private_data, struct lsql_context); + + switch (ctx->req->operation) { + case LDB_SEARCH: + ret = lsql_search(ctx); + break; + case LDB_ADD: + ret = lsql_add(ctx); + break; + case LDB_MODIFY: + ret = lsql_modify(ctx); + break; + case LDB_DELETE: + ret = lsql_delete(ctx); + break; + case LDB_RENAME: + ret = lsql_rename(ctx); + break; +/* TODO: + case LDB_EXTENDED: + ret = lsql_extended(ctx); + break; + */ + default: + /* no other op supported */ + ret = LDB_ERR_PROTOCOL_ERROR; + } + + if (!ctx->callback_failed) { + /* Once we are done, we do not need timeout events */ + talloc_free(ctx->timeout_event); + lsql_request_done(ctx, ret); + } +} + +static int lsql_handle_request(struct ldb_module *module, struct ldb_request *req) +{ + struct ldb_context *ldb; + struct tevent_context *ev; + struct lsql_context *ac; + struct tevent_timer *te; + struct timeval tv; + + if (ldb_check_critical_controls(req->controls)) { + return LDB_ERR_UNSUPPORTED_CRITICAL_EXTENSION; + } + + if (req->starttime == 0 || req->timeout == 0) { + ldb_set_errstring(ldb, "Invalid timeout settings"); + return LDB_ERR_TIME_LIMIT_EXCEEDED; + } + + ldb = ldb_module_get_ctx(module); + ev = ldb_get_event_context(ldb); + + ac = talloc_zero(req, struct lsql_context); + if (ac == NULL) { + ldb_set_errstring(ldb, "Out of Memory"); + return LDB_ERR_OPERATIONS_ERROR; + } + + ac->module = module; + ac->req = req; + + tv.tv_sec = 0; + tv.tv_usec = 0; + te = tevent_add_timer(ev, ac, tv, lsql_callback, ac); + if (NULL == te) { + return LDB_ERR_OPERATIONS_ERROR; + } + + if (req->timeout > 0) { + tv.tv_sec = req->starttime + req->timeout; + tv.tv_usec = 0; + ac->timeout_event = tevent_add_timer(ev, ac, tv, lsql_timeout, ac); + if (NULL == ac->timeout_event) { + return LDB_ERR_OPERATIONS_ERROR; + } + } + + return LDB_SUCCESS; +} + +/* + * Table of operations for the sqlite3 backend + */ +static const struct ldb_module_ops lsqlite3_ops = { + .name = "sqlite", + .search = lsql_handle_request, + .add = lsql_handle_request, + .modify = lsql_handle_request, + .del = lsql_handle_request, + .rename = lsql_handle_request, + .extended = lsql_handle_request, + .start_transaction = lsql_start_trans, + .end_transaction = lsql_end_trans, + .del_transaction = lsql_del_trans, +}; + +/* + * Static functions + */ + +static int initialize(struct lsqlite3_private *lsqlite3, + struct ldb_context *ldb, const char *url, + unsigned int flags) +{ + TALLOC_CTX *local_ctx; + long long queryInt; + int rollback = 0; + char *errmsg; + char *schema; + int ret; + + /* create a local ctx */ + local_ctx = talloc_named(lsqlite3, 0, "lsqlite3_rename local context"); + if (local_ctx == NULL) { + return -1; + } + + schema = lsqlite3_tprintf(local_ctx, + + + "CREATE TABLE ldb_info AS " + " SELECT 'LDB' AS database_type," + " '1.0' AS version;" + + /* + * The entry table holds the information about an entry. + * This table is used to obtain the EID of the entry and to + * support scope=one and scope=base. The parent and child + * table is included in the entry table since all the other + * attributes are dependent on EID. + */ + "CREATE TABLE ldb_entry " + "(" + " eid INTEGER PRIMARY KEY AUTOINCREMENT," + " dn TEXT UNIQUE NOT NULL," + " norm_dn TEXT UNIQUE NOT NULL" + ");" + + + "CREATE TABLE ldb_object_classes" + "(" + " class_name TEXT PRIMARY KEY," + " parent_class_name TEXT," + " tree_key TEXT UNIQUE," + " max_child_num INTEGER DEFAULT 0" + ");" + + /* + * We keep a full listing of attribute/value pairs here + */ + "CREATE TABLE ldb_attribute_values" + "(" + " eid INTEGER REFERENCES ldb_entry," + " attr_name TEXT," + " norm_attr_name TEXT," + " attr_value TEXT," + " norm_attr_value TEXT " + ");" + + + /* + * Indexes + */ + "CREATE INDEX ldb_attribute_values_eid_idx " + " ON ldb_attribute_values (eid);" + + "CREATE INDEX ldb_attribute_values_name_value_idx " + " ON ldb_attribute_values (attr_name, norm_attr_value);" + + + + /* + * Triggers + */ + + "CREATE TRIGGER ldb_object_classes_insert_tr" + " AFTER INSERT" + " ON ldb_object_classes" + " FOR EACH ROW" + " BEGIN" + " UPDATE ldb_object_classes" + " SET tree_key = COALESCE(tree_key, " + " (" + " SELECT tree_key || " + " (SELECT base160(max_child_num + 1)" + " FROM ldb_object_classes" + " WHERE class_name = " + " new.parent_class_name)" + " FROM ldb_object_classes " + " WHERE class_name = new.parent_class_name " + " ));" + " UPDATE ldb_object_classes " + " SET max_child_num = max_child_num + 1" + " WHERE class_name = new.parent_class_name;" + " END;" + + /* + * Table initialization + */ + + "INSERT INTO ldb_object_classes " + " (class_name, tree_key) " + " VALUES " + " ('TOP', '0001');"); + + /* Skip protocol indicator of url */ + if (strncmp(url, "sqlite3://", 10) != 0) { + return SQLITE_MISUSE; + } + + /* Update pointer to just after the protocol indicator */ + url += 10; + + /* Try to open the (possibly empty/non-existent) database */ + if ((ret = sqlite3_open(url, &lsqlite3->sqlite)) != SQLITE_OK) { + return ret; + } + + /* In case this is a new database, enable auto_vacuum */ + ret = sqlite3_exec(lsqlite3->sqlite, "PRAGMA auto_vacuum = 1;", NULL, NULL, &errmsg); + if (ret != SQLITE_OK) { + if (errmsg) { + printf("lsqlite3 initializaion error: %s\n", errmsg); + free(errmsg); + } + goto failed; + } + + if (flags & LDB_FLG_NOSYNC) { + /* DANGEROUS */ + ret = sqlite3_exec(lsqlite3->sqlite, "PRAGMA synchronous = OFF;", NULL, NULL, &errmsg); + if (ret != SQLITE_OK) { + if (errmsg) { + printf("lsqlite3 initializaion error: %s\n", errmsg); + free(errmsg); + } + goto failed; + } + } + + /* */ + + /* Establish a busy timeout of 30 seconds */ + if ((ret = sqlite3_busy_timeout(lsqlite3->sqlite, + 30000)) != SQLITE_OK) { + return ret; + } + + /* Create a function, callable from sql, to increment a tree_key */ + if ((ret = + sqlite3_create_function(lsqlite3->sqlite,/* handle */ + "base160_next", /* function name */ + 1, /* number of args */ + SQLITE_ANY, /* preferred text type */ + NULL, /* user data */ + base160next_sql, /* called func */ + NULL, /* step func */ + NULL /* final func */ + )) != SQLITE_OK) { + return ret; + } + + /* Create a function, callable from sql, to convert int to base160 */ + if ((ret = + sqlite3_create_function(lsqlite3->sqlite,/* handle */ + "base160", /* function name */ + 1, /* number of args */ + SQLITE_ANY, /* preferred text type */ + NULL, /* user data */ + base160_sql, /* called func */ + NULL, /* step func */ + NULL /* final func */ + )) != SQLITE_OK) { + return ret; + } + + /* Create a function, callable from sql, to perform various comparisons */ + if ((ret = + sqlite3_create_function(lsqlite3->sqlite, /* handle */ + "ldap_compare", /* function name */ + 4, /* number of args */ + SQLITE_ANY, /* preferred text type */ + ldb , /* user data */ + lsqlite3_compare, /* called func */ + NULL, /* step func */ + NULL /* final func */ + )) != SQLITE_OK) { + return ret; + } + + /* Begin a transaction */ + ret = sqlite3_exec(lsqlite3->sqlite, "BEGIN EXCLUSIVE;", NULL, NULL, &errmsg); + if (ret != SQLITE_OK) { + if (errmsg) { + printf("lsqlite3: initialization error: %s\n", errmsg); + free(errmsg); + } + goto failed; + } + rollback = 1; + + /* Determine if this is a new database. No tables means it is. */ + if (query_int(lsqlite3, + &queryInt, + "SELECT COUNT(*)\n" + " FROM sqlite_master\n" + " WHERE type = 'table';") != 0) { + goto failed; + } + + if (queryInt == 0) { + /* + * Create the database schema + */ + ret = sqlite3_exec(lsqlite3->sqlite, schema, NULL, NULL, &errmsg); + if (ret != SQLITE_OK) { + if (errmsg) { + printf("lsqlite3 initializaion error: %s\n", errmsg); + free(errmsg); + } + goto failed; + } + } else { + /* + * Ensure that the database we opened is one of ours + */ + if (query_int(lsqlite3, + &queryInt, + "SELECT " + " (SELECT COUNT(*) = 2" + " FROM sqlite_master " + " WHERE type = 'table' " + " AND name IN " + " (" + " 'ldb_entry', " + " 'ldb_object_classes' " + " ) " + " ) " + " AND " + " (SELECT 1 " + " FROM ldb_info " + " WHERE database_type = 'LDB' " + " AND version = '1.0'" + " );") != 0 || + queryInt != 1) { + + /* It's not one that we created. See ya! */ + goto failed; + } + } + + /* Commit the transaction */ + ret = sqlite3_exec(lsqlite3->sqlite, "COMMIT;", NULL, NULL, &errmsg); + if (ret != SQLITE_OK) { + if (errmsg) { + printf("lsqlite3: iniialization error: %s\n", errmsg); + free(errmsg); + } + goto failed; + } + + return SQLITE_OK; + +failed: + if (rollback) lsqlite3_safe_rollback(lsqlite3->sqlite); + sqlite3_close(lsqlite3->sqlite); + return -1; +} + +/* + * connect to the database + */ +static int lsqlite3_connect(struct ldb_context *ldb, + const char *url, + unsigned int flags, + const char *options[], + struct ldb_module **_module) +{ + struct ldb_module *module; + struct lsqlite3_private *lsqlite3; + unsigned int i; + int ret; + + module = ldb_module_new(ldb, ldb, "ldb_sqlite3 backend", &lsqlite3_ops); + if (!module) return LDB_ERR_OPERATIONS_ERROR; + + lsqlite3 = talloc(module, struct lsqlite3_private); + if (!lsqlite3) { + goto failed; + } + + lsqlite3->sqlite = NULL; + lsqlite3->options = NULL; + lsqlite3->trans_count = 0; + + ret = initialize(lsqlite3, ldb, url, flags); + if (ret != SQLITE_OK) { + goto failed; + } + + talloc_set_destructor(lsqlite3, destructor); + + ldb_module_set_private(module, lsqlite3); + + if (options) { + /* + * take a copy of the options array, so we don't have to rely + * on the caller keeping it around (it might be dynamic) + */ + for (i=0;options[i];i++) ; + + lsqlite3->options = talloc_array(lsqlite3, char *, i+1); + if (!lsqlite3->options) { + goto failed; + } + + for (i=0;options[i];i++) { + + lsqlite3->options[i+1] = NULL; + lsqlite3->options[i] = + talloc_strdup(lsqlite3->options, options[i]); + if (!lsqlite3->options[i]) { + goto failed; + } + } + } + + *_module = module; + return LDB_SUCCESS; + +failed: + if (lsqlite3 && lsqlite3->sqlite != NULL) { + (void) sqlite3_close(lsqlite3->sqlite); + } + talloc_free(lsqlite3); + return LDB_ERR_OPERATIONS_ERROR; +} + +int ldb_sqlite3_init(const char *version) +{ + LDB_MODULE_CHECK_VERSION(version); + return ldb_register_backend("sqlite3", lsqlite3_connect, false); +} diff --git a/lib/ldb/ldb_sqlite3/schema b/lib/ldb/ldb_sqlite3/schema new file mode 100644 index 0000000..ab7c5cc --- /dev/null +++ b/lib/ldb/ldb_sqlite3/schema @@ -0,0 +1,328 @@ + -- ------------------------------------------------------ + + PRAGMA auto_vacuum=1; + + -- ------------------------------------------------------ + + BEGIN EXCLUSIVE; + + -- ------------------------------------------------------ + + CREATE TABLE ldb_info AS + SELECT 'LDB' AS database_type, + '1.0' AS version; + + /* + * Get the next USN value with: + * BEGIN EXCLUSIVE; + * UPDATE usn SET value = value + 1; + * SELECT value FROM usn; + * COMMIT; + */ + CREATE TABLE usn + ( + value INTEGER + ); + + CREATE TABLE ldb_object + ( + /* tree_key is auto-generated by the insert trigger */ + tree_key TEXT PRIMARY KEY, + + parent_tree_key TEXT, + dn TEXT, + + attr_name TEXT REFERENCES ldb_attributes, + attr_value TEXT, + + /* + * object_type can take on these values (to date): + * 1: object is a node of a DN + * 2: object is an attribute/value pair of its parent DN + */ + object_type INTEGER, + + /* + * if object_type is 1, the node can have children. + * this tracks the maximum previously assigned child + * number so we can generate a new unique tree key for + * a new child object. note that this is always incremented, + * so if children are deleted, this will not represent + * the _number_ of children. + */ + max_child_num INTEGER, + + /* + * Automatically maintained meta-data (a gift for metze) + */ + object_guid TEXT UNIQUE, + timestamp INTEGER, -- originating_time + invoke_id TEXT, -- GUID: originating_invocation_id + usn INTEGER, -- hyper: originating_usn + + /* do not allow duplicate name/value pairs */ + UNIQUE (parent_tree_key, attr_name, attr_value, object_type) + ); + + CREATE TABLE ldb_attributes + ( + attr_name TEXT PRIMARY KEY, + parent_tree_key TEXT, + + objectclass_p BOOLEAN DEFAULT 0, + + case_insensitive_p BOOLEAN DEFAULT 0, + wildcard_p BOOLEAN DEFAULT 0, + hidden_p BOOLEAN DEFAULT 0, + integer_p BOOLEAN DEFAULT 0, + + /* tree_key is auto-generated by the insert trigger */ + tree_key TEXT, -- null if not a object/sub class + -- level 1 if an objectclass + -- level 1-n if a subclass + max_child_num INTEGER + ); + + -- ------------------------------------------------------ + + CREATE INDEX ldb_object_dn_idx + ON ldb_object (dn); + + CREATE INDEX ldb_attributes_tree_key_ids + ON ldb_attributes (tree_key); + + -- ------------------------------------------------------ + + /* Gifts for metze. Automatically updated meta-data */ + CREATE TRIGGER ldb_object_insert_tr + AFTER INSERT + ON ldb_object + FOR EACH ROW + BEGIN + UPDATE ldb_object + SET max_child_num = max_child_num + 1 + WHERE tree_key = new.parent_tree_key; + UPDATE usn SET value = value + 1; + UPDATE ldb_object + SET tree_key = + (SELECT + new.tree_key || + base160(SELECT max_child_num + FROM ldb_object + WHERE tree_key = + new.parent_tree_key)); + max_child_num = 0, + object_guid = random_guid(), + timestamp = strftime('%s', 'now'), + usn = (SELECT value FROM usn); + WHERE tree_key = new.tree_key; + END; + + CREATE TRIGGER ldb_object_update_tr + AFTER UPDATE + ON ldb_object + FOR EACH ROW + BEGIN + UPDATE usn SET value = value + 1; + UPDATE ldb_object + SET timestamp = strftime('%s', 'now'), + usn = (SELECT value FROM usn); + WHERE tree_key = new.tree_key; + END; + + CREATE TRIGGER ldb_attributes_insert_tr + AFTER INSERT + ON ldb_attributes + FOR EACH ROW + BEGIN + UPDATE ldb_attributes + SET max_child_num = max_child_num + 1 + WHERE tree_key = new.parent_tree_key; + UPDATE ldb_attributes + SET tree_key = + (SELECT + new.tree_key || + base160(SELECT max_child_num + FROM ldb_attributes + WHERE tree_key = + new.parent_tree_key)); + max_child_num = 0 + WHERE tree_key = new.tree_key; + END; + + + -- ------------------------------------------------------ + + /* Initialize usn */ + INSERT INTO usn (value) VALUES (0); + + /* Create root object */ + INSERT INTO ldb_object + (tree_key, parent_tree_key, + dn, + object_type, max_child_num) + VALUES ('', NULL, + '', + 1, 0); + + /* We need an implicit "top" level object class */ + INSERT INTO ldb_attributes (attr_name, + parent_tree_key) + SELECT 'top', ''; + + -- ------------------------------------------------------ + + COMMIT; + + -- ------------------------------------------------------ + +/* + * dn: o=University of Michigan,c=US + * objectclass: organization + * objectclass: domainRelatedObject + */ +-- newDN +BEGIN; + +INSERT OR IGNORE INTO ldb_object + (parent_tree_key + dn, + attr_name, attr_value, object_type, max_child_num) + VALUES ('', + 'c=US', + 'c', 'US', 1, 0); + +INSERT INTO ldb_object + (parent_tree_key, + dn, + attr_name, attr_value, object_type, max_child_num) + VALUES ('0001', + 'o=University of Michigan,c=US', + 'o', 'University of Michigan', 1, 0); + +-- newObjectClass +INSERT OR IGNORE INTO ldb_attributes + (attr_name, parent_tree_key, objectclass_p) + VALUES + ('objectclass', '', 1); + +INSERT INTO ldb_object + (parent_tree_key, + dn, + attr_name, attr_value, object_type, max_child_num) + VALUES ('00010001', + NULL, + 'objectclass', 'organization', 2, 0); + +INSERT OR IGNORE INTO ldb_attributes + (attr_name, parent_tree_key, objectclass_p) + VALUES + ('objectclass', '', 1); + +INSERT INTO ldb_object + (parent_tree_key, + dn, + attr_name, attr_value, object_type, max_child_num) + VALUES ('00010001', + NULL, + 'objectclass', 'domainRelatedObject', 2, 0); + +COMMIT; + + +/* + * dn: o=University of Michigan,c=US + * l: Ann Arbor, Michigan + * st: Michigan + * o: University of Michigan + * o: UMICH + * seeAlso: + * telephonenumber: +1 313 764-1817 + */ +-- addAttrValuePair +BEGIN; + +INSERT INTO ldb_object + (parent_tree_key, dn, + attr_name, attr_value, object_type, max_child_num) + VALUES ('00010001', NULL, + 'l', 'Ann Arbor, Michigan', 2, 0); + +INSERT INTO ldb_object + (parent_tree_key, dn, + attr_name, attr_value, object_type, max_child_num) + VALUES ('00010001', NULL, + 'st', 'Michigan', 2, 0); + +INSERT INTO ldb_object + (parent_tree_key, dn, + attr_name, attr_value, object_type, max_child_num) + VALUES ('00010001', NULL, + 'o', 'University of Michigan', 2, 0); + +INSERT INTO ldb_object + (parent_tree_key, dn, + attr_name, attr_value, object_type, max_child_num) + VALUES ('00010001', NULL, + 'o', 'UMICH', 2, 0); + +INSERT INTO ldb_object + (parent_tree_key, dn, + attr_name, attr_value, object_type, max_child_num) + VALUES ('00010001', NULL, + 'seeAlso', '', 2, 0); + +INSERT INTO ldb_object + (parent_tree_key, dn, + attr_name, attr_value, object_type, max_child_num) + VALUES ('00010001', NULL, + 'telephonenumber', '+1 313 764-1817', 2, 0); + +COMMIT; + +-- ---------------------------------------------------------------------- + +/* + * dn: @ATTRIBUTES + * uid: CASE_INSENSITIVE WILDCARD + * cn: CASE_INSENSITIVE + * ou: CASE_INSENSITIVE + * dn: CASE_INSENSITIVE + */ +-- newAttribute + +BEGIN; + +INSERT OR IGNORE INTO ldb_attributes + (attr_name, parent_tree_key, objectclass_p) + VALUES + ('uid', '', 0); + +UPDATE ldb_attributes + SET case_insensitive_p = 1, + wildcard_p = 1, + hidden_p = 0, + integer_p = 0 + WHERE attr_name = 'uid' + +UPDATE ldb_attributes + SET case_insensitive_p = 1, + wildcard_p = 0, + hidden_p = 0, + integer_p = 0 + WHERE attr_name = 'cn' + +UPDATE ldb_attributes + SET case_insensitive_p = 1, + wildcard_p = 0, + hidden_p = 0, + integer_p = 0 + WHERE attr_name = 'ou' + +UPDATE ldb_attributes + SET case_insensitive_p = 1, + wildcard_p = 0, + hidden_p = 0, + integer_p = 0 + WHERE attr_name = 'dn' + diff --git a/lib/ldb/ldb_sqlite3/trees.ps b/lib/ldb/ldb_sqlite3/trees.ps new file mode 100644 index 0000000..433a064 --- /dev/null +++ b/lib/ldb/ldb_sqlite3/trees.ps @@ -0,0 +1,1760 @@ +%!PS-Adobe-2.0 +%%Creator: dvips(k) 5.86 Copyright 1999 Radical Eye Software +%%Title: trees.dvi +%%Pages: 7 +%%PageOrder: Ascend +%%BoundingBox: 0 0 596 842 +%%EndComments +%DVIPSWebPage: (www.radicaleye.com) +%DVIPSCommandLine: dvips -f trees.dvi +%DVIPSParameters: dpi=600, compressed +%DVIPSSource: TeX output 2000.05.06:2055 +%%BeginProcSet: texc.pro +%! +/TeXDict 300 dict def TeXDict begin/N{def}def/B{bind def}N/S{exch}N/X{S +N}B/A{dup}B/TR{translate}N/isls false N/vsize 11 72 mul N/hsize 8.5 72 +mul N/landplus90{false}def/@rigin{isls{[0 landplus90{1 -1}{-1 1}ifelse 0 +0 0]concat}if 72 Resolution div 72 VResolution div neg scale isls{ +landplus90{VResolution 72 div vsize mul 0 exch}{Resolution -72 div hsize +mul 0}ifelse TR}if Resolution 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