Merge cdr_adaptive_odbc from developer branch
authorTilghman Lesher <tilghman@meg.abyt.es>
Fri, 18 May 2007 20:21:11 +0000 (20:21 +0000)
committerTilghman Lesher <tilghman@meg.abyt.es>
Fri, 18 May 2007 20:21:11 +0000 (20:21 +0000)
git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@65169 65c4cc65-6c06-0410-ace0-fbb531ad65f3

cdr/cdr_adaptive_odbc.c [new file with mode: 0644]
configs/cdr_adaptive_odbc.conf.sample [new file with mode: 0644]

diff --git a/cdr/cdr_adaptive_odbc.c b/cdr/cdr_adaptive_odbc.c
new file mode 100644 (file)
index 0000000..474d7fc
--- /dev/null
@@ -0,0 +1,614 @@
+/*
+ * Asterisk -- An open source telephony toolkit.
+ *
+ * Copyright (C) 2007, Tilghman Lesher
+ *
+ * Tilghman Lesher <cdr_adaptive_odbc__v1@the-tilghman.com>
+ *
+ * See http://www.asterisk.org for more information about
+ * the Asterisk project. Please do not directly contact
+ * any of the maintainers of this project for assistance;
+ * the project provides a web site, mailing lists and IRC
+ * channels for your use.
+ *
+ * This program is free software, distributed under the terms of
+ * the GNU General Public License Version 2. See the LICENSE file
+ * at the top of the source tree.
+ */
+
+/*! \file
+ *
+ * \brief Adaptive ODBC CDR backend
+ * 
+ * \author Tilghman Lesher <cdr_adaptive_odbc__v1@the-tilghman.com>
+ * \ingroup cdr_drivers
+ */
+
+/*** MODULEINFO
+       <depend>unixodbc</depend>
+ ***/
+
+#include "asterisk.h"
+
+ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
+
+#include <sys/types.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <time.h>
+
+#include <sql.h>
+#include <sqlext.h>
+#include <sqltypes.h>
+
+#include "asterisk/config.h"
+#include "asterisk/options.h"
+#include "asterisk/channel.h"
+#include "asterisk/lock.h"
+#include "asterisk/linkedlists.h"
+#include "asterisk/res_odbc.h"
+#include "asterisk/cdr.h"
+#include "asterisk/module.h"
+#include "asterisk/logger.h"
+
+#define        CONFIG  "cdr_adaptive_odbc.conf"
+
+static char *name = "Adaptive ODBC";
+/* Optimization to reduce number of memory allocations */
+static int maxsize = 512, maxsize2 = 512;
+
+struct columns {
+       char *name;
+       char *cdrname;
+       SQLSMALLINT type;
+       SQLINTEGER size;
+       SQLSMALLINT decimals;
+       SQLSMALLINT radix;
+       SQLSMALLINT nullable;
+       SQLINTEGER octetlen;
+       AST_LIST_ENTRY(columns) list;
+};
+
+struct tables {
+       char *connection;
+       char *table;
+       AST_LIST_HEAD_NOLOCK(odbc_columns, columns) columns;
+       AST_RWLIST_ENTRY(tables) list;
+};
+
+static AST_RWLIST_HEAD_STATIC(odbc_tables, tables);
+
+static int load_config(void)
+{
+       struct ast_config *cfg;
+       struct ast_variable *var;
+       const char *tmp, *catg;
+       struct tables *tableptr;
+       struct columns *entry;
+       struct odbc_obj *obj;
+       char columnname[80];
+       char connection[40];
+       char table[40];
+       int lenconnection, lentable;
+       SQLLEN sqlptr;
+       int res = 0;
+       SQLHSTMT stmt = NULL;
+
+       cfg = ast_config_load(CONFIG);
+       if (!cfg) {
+               ast_log(LOG_WARNING, "Unable to load " CONFIG ".  No adaptive ODBC CDRs.\n");
+               return -1;
+       }
+
+       for (catg = ast_category_browse(cfg, NULL); catg; catg = ast_category_browse(cfg, catg)) {
+               var = ast_variable_browse(cfg, catg);
+               if (!var)
+                       continue;
+
+               if (ast_strlen_zero(tmp = ast_variable_retrieve(cfg, catg, "connection"))) {
+                       ast_log(LOG_WARNING, "No connection parameter found in '%s'.  Skipping.\n", catg);
+                       continue;
+               }
+               ast_copy_string(connection, tmp, sizeof(connection));
+               lenconnection = strlen(connection);
+
+               obj = ast_odbc_request_obj(connection, 1);
+               if (!obj) {
+                       ast_log(LOG_WARNING, "No such connection '%s' in the '%s' section of " CONFIG ".  Check res_odbc.conf.\n", connection, catg);
+                       continue;
+               }
+
+               if (ast_strlen_zero(tmp = ast_variable_retrieve(cfg, catg, "table"))) {
+                       ast_log(LOG_NOTICE, "No table name found.  Assuming 'cdr'.\n");
+                       tmp = "cdr";
+               }
+               ast_copy_string(table, tmp, sizeof(table));
+               lentable = strlen(table);
+
+               res = SQLAllocHandle(SQL_HANDLE_STMT, obj->con, &stmt);
+               if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
+                       ast_log(LOG_WARNING, "SQL Alloc Handle failed on connection '%s'!\n", connection);
+                       ast_odbc_release_obj(obj);
+                       continue;
+               }
+
+               res = SQLColumns(stmt, NULL, 0, NULL, 0, (unsigned char *)table, SQL_NTS, (unsigned char *)"%", SQL_NTS);
+               if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
+                       ast_log(LOG_ERROR, "Unable to query database columns on connection '%s'.  Skipping.\n", connection);
+                       ast_odbc_release_obj(obj);
+                       continue;
+               }
+
+               tableptr = ast_calloc(sizeof(char), sizeof(*tableptr) + lenconnection + 1 + lentable + 1);
+               if (!tableptr) {
+                       ast_log(LOG_ERROR, "Out of memory creating entry for table '%s' on connection '%s'\n", table, connection);
+                       ast_odbc_release_obj(obj);
+                       res = -1;
+                       break;
+               }
+
+               tableptr->connection = (char *)tableptr + sizeof(*tableptr);
+               tableptr->table = (char *)tableptr + sizeof(*tableptr) + lenconnection + 1;
+               ast_copy_string(tableptr->connection, connection, lenconnection + 1);
+               ast_copy_string(tableptr->table, table, lentable + 1);
+
+               while ((res = SQLFetch(stmt)) != SQL_NO_DATA && res != SQL_ERROR) {
+                       char *cdrvar = "";
+
+                       SQLGetData(stmt,  4, SQL_C_CHAR, columnname, sizeof(columnname), &sqlptr);
+
+                       /* Is there an alias for this column? */
+
+                       /* NOTE: This seems like a non-optimal parse method, but I'm going
+                        * for user configuration readability, rather than fast parsing. We
+                        * really don't parse this file all that often, anyway.
+                        */
+                       for (var = ast_variable_browse(cfg, catg); var; var = var->next) {
+                               if (strcasecmp(var->value, columnname) == 0) {
+                                       char *tmp = ast_strdupa(var->name + 5);
+                                       cdrvar = ast_strip(tmp);
+                                       ast_verbose(VERBOSE_PREFIX_4 "Found alias %s for column %s\n", cdrvar, columnname);
+                                       break;
+                               }
+                       }
+                       entry = ast_calloc(sizeof(char), sizeof(*entry) + strlen(columnname) + 1 + strlen(cdrvar) + 1);
+                       if (!entry) {
+                               ast_log(LOG_ERROR, "Out of memory creating entry for column '%s' in table '%s' on connection '%s'\n", columnname, table, connection);
+                               res = -1;
+                               break;
+                       }
+                       entry->name = (char *)entry + sizeof(*entry);
+                       strcpy(entry->name, columnname);
+
+                       if (!ast_strlen_zero(cdrvar)) {
+                               entry->cdrname = entry->name + strlen(columnname) + 1;
+                               strcpy(entry->cdrname, cdrvar);
+                       } else /* Point to same place as the column name */
+                               entry->cdrname = (char *)entry + sizeof(*entry);
+
+                       SQLGetData(stmt,  5, SQL_C_SHORT, &entry->type, sizeof(entry->type), NULL);
+                       SQLGetData(stmt,  7, SQL_C_LONG, &entry->size, sizeof(entry->size), NULL);
+                       SQLGetData(stmt,  9, SQL_C_SHORT, &entry->decimals, sizeof(entry->decimals), NULL);
+                       SQLGetData(stmt, 10, SQL_C_SHORT, &entry->radix, sizeof(entry->radix), NULL);
+                       SQLGetData(stmt, 11, SQL_C_SHORT, &entry->nullable, sizeof(entry->nullable), NULL);
+                       SQLGetData(stmt, 16, SQL_C_LONG, &entry->octetlen, sizeof(entry->octetlen), NULL);
+
+                       /* Insert column info into column list */
+                       AST_LIST_INSERT_TAIL(&(tableptr->columns), entry, list);
+                       res = 0;
+               }
+
+               ast_odbc_release_obj(obj);
+
+               if (AST_LIST_FIRST(&(tableptr->columns)))
+                       AST_RWLIST_INSERT_TAIL(&odbc_tables, tableptr, list);
+               else
+                       free(tableptr);
+       }
+       return res;
+}
+
+static int free_config(void)
+{
+       struct tables *table;
+       struct columns *entry;
+       while ((table = AST_RWLIST_REMOVE_HEAD(&odbc_tables, list))) {
+               while ((entry = AST_LIST_REMOVE_HEAD(&(table->columns), list))) {
+                       ast_free(entry);
+               }
+               ast_free(table);
+       }
+       return 0;
+}
+
+static SQLHSTMT generic_prepare(struct odbc_obj *obj, void *data)
+{
+       int res, i;
+       char *sql = data;
+       SQLHSTMT stmt;
+       SQLINTEGER nativeerror = 0, numfields = 0;
+       SQLSMALLINT diagbytes = 0;
+       unsigned char state[10], diagnostic[256];
+
+       res = SQLAllocHandle (SQL_HANDLE_STMT, obj->con, &stmt);
+       if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
+               ast_log(LOG_WARNING, "SQL Alloc Handle failed!\n");
+               return NULL;
+       }
+
+       res = SQLPrepare(stmt, (unsigned char *)sql, SQL_NTS);
+       if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
+               ast_log(LOG_WARNING, "SQL Prepare failed![%s]\n", sql);
+               SQLGetDiagField(SQL_HANDLE_STMT, stmt, 1, SQL_DIAG_NUMBER, &numfields, SQL_IS_INTEGER, &diagbytes);
+               for (i = 0; i < numfields; i++) {
+                       SQLGetDiagRec(SQL_HANDLE_STMT, stmt, i + 1, state, &nativeerror, diagnostic, sizeof(diagnostic), &diagbytes);
+                       ast_log(LOG_WARNING, "SQL Execute returned an error %d: %s: %s (%d)\n", res, state, diagnostic, diagbytes);
+                       if (i > 10) {
+                               ast_log(LOG_WARNING, "Oh, that was good.  There are really %d diagnostics?\n", (int)numfields);
+                               break;
+                       }
+               }
+               SQLFreeHandle (SQL_HANDLE_STMT, stmt);
+               return NULL;
+       }
+
+       return stmt;
+}
+
+#define LENGTHEN_BUF1(size)                                                                                                            \
+                       do {                                                                                                                            \
+                               /* Lengthen buffer, if necessary */                                                             \
+                               if ((newsize = lensql + (size) + 3) > sizesql) {        \
+                                       if ((tmp = ast_realloc(sql, (newsize / 512 + 1) * 512))) {      \
+                                               sql = tmp;                                                                                              \
+                                               sizesql = (newsize / 512 + 1) * 512;                                    \
+                                       } else {                                                                                                        \
+                                               ast_log(LOG_ERROR, "Unable to allocate sufficient memory.  Insert CDR '%s:%s' failed.\n", tableptr->connection, tableptr->table); \
+                                               ast_free(sql);                                                                                  \
+                                               ast_free(sql2);                                                                                 \
+                                               AST_RWLIST_UNLOCK(&odbc_tables);                                                \
+                                               return -1;                                                                                              \
+                                       }                                                                                                                       \
+                               }                                                                                                                               \
+                       } while (0)
+
+#define LENGTHEN_BUF2(size)                                                                                                            \
+                       do {                                                                                                                            \
+                               if ((newsize = lensql2 + (size) + 3) > sizesql2) {                              \
+                                       if ((tmp = ast_realloc(sql2, (newsize / 512 + 1) * 512))) {     \
+                                               sql2 = tmp;                                                                                             \
+                                               sizesql2 = (newsize / 512 + 1) * 512;                                   \
+                                       } else {                                                                                                        \
+                                               ast_log(LOG_ERROR, "Unable to allocate sufficient memory.  Insert CDR '%s:%s' failed.\n", tableptr->connection, tableptr->table);       \
+                                               ast_free(sql);                                                                                  \
+                                               ast_free(sql2);                                                                                 \
+                                               AST_RWLIST_UNLOCK(&odbc_tables);                                                \
+                                               return -1;                                                                                              \
+                                       }                                                                                                                       \
+                               }                                                                                                                               \
+                       } while (0)
+
+static int odbc_log(struct ast_cdr *cdr)
+{
+       struct tables *tableptr;
+       struct columns *entry;
+       struct odbc_obj *obj;
+       int lensql, lensql2, sizesql = maxsize, sizesql2 = maxsize2, newsize;
+       /* Allocated, so we can realloc() */
+       char *sql = ast_calloc(sizeof(char), sizesql), *sql2 = ast_calloc(sizeof(char), sizesql2), *tmp;
+       char colbuf[1024], *colptr;
+       SQLHSTMT stmt = NULL;
+       SQLINTEGER rows = 0;
+
+       if (AST_RWLIST_RDLOCK(&odbc_tables)) {
+               ast_log(LOG_ERROR, "Unable to lock table list.  Insert CDR(s) failed.\n");
+               return -1;
+       }
+
+       AST_LIST_TRAVERSE(&odbc_tables, tableptr, list) {
+               lensql = snprintf(sql, sizesql, "INSERT INTO %s (", tableptr->table);
+               lensql2 = snprintf(sql2, sizesql2, " VALUES (");
+
+               AST_LIST_TRAVERSE(&(tableptr->columns), entry, list) {
+                       /* Check if we have a similarly named variable */
+                       ast_cdr_getvar(cdr, entry->cdrname, &colptr, colbuf, sizeof(colbuf), 0,
+                               (strcasecmp(entry->cdrname, "start") == 0 ||
+                                strcasecmp(entry->cdrname, "answer") == 0 ||
+                                strcasecmp(entry->cdrname, "end") == 0) ? 0 : 1);
+
+                       if (colptr) {
+                               LENGTHEN_BUF1(strlen(entry->name));
+
+                               switch (entry->type) {
+                               case SQL_CHAR:
+                               case SQL_VARCHAR:
+                               case SQL_LONGVARCHAR:
+                               case SQL_BINARY:
+                               case SQL_VARBINARY:
+                               case SQL_LONGVARBINARY:
+                               case SQL_GUID:
+                                       /* For these two field names, get the rendered form, instead of the raw
+                                        * form (but only when we're dealing with a character-based field).
+                                        */
+                                       if (strcasecmp(entry->name, "disposition") == 0)
+                                               ast_cdr_getvar(cdr, entry->name, &colptr, colbuf, sizeof(colbuf), 0, 0);
+                                       else if (strcasecmp(entry->name, "amaflags") == 0)
+                                               ast_cdr_getvar(cdr, entry->name, &colptr, colbuf, sizeof(colbuf), 0, 0);
+
+                                       /* Truncate too-long fields */
+                                       if (entry->type != SQL_GUID) {
+                                               if (strlen(colptr) > entry->octetlen)
+                                                       colptr[entry->octetlen] = '\0';
+                                       }
+
+                                       lensql += snprintf(sql + lensql, sizesql - lensql, "%s,", entry->name);
+                                       LENGTHEN_BUF2(strlen(colptr));
+
+                                       /* Encode value, with escaping */
+                                       strcpy(sql2 + lensql2, "'");
+                                       lensql2++;
+                                       for (tmp = colptr; *tmp; tmp++) {
+                                               if (*tmp == '\'') {
+                                                       strcpy(sql2 + lensql2, "''");
+                                                       lensql2 += 2;
+                                               } else if (*tmp == '\\') {
+                                                       strcpy(sql2 + lensql2, "\\\\");
+                                                       lensql2 += 2;
+                                               } else {
+                                                       sql2[lensql2++] = *tmp;
+                                                       sql2[lensql2] = '\0';
+                                               }
+                                       }
+                                       strcpy(sql2 + lensql2, "',");
+                                       lensql2 += 2;
+                                       break;
+                               case SQL_TYPE_DATE:
+                                       {
+                                               int year = 0, month = 0, day = 0;
+                                               if (sscanf(colptr, "%d-%d-%d", &year, &month, &day) != 3 || year <= 0 ||
+                                                       month <= 0 || month > 12 || day < 0 || day > 31 ||
+                                                       ((month == 4 || month == 6 || month == 9 || month == 11) && day == 31) ||
+                                                       (month == 2 && year % 400 == 0 && day > 29) ||
+                                                       (month == 2 && year % 100 == 0 && day > 28) ||
+                                                       (month == 2 && year % 4 == 0 && day > 29) ||
+                                                       (month == 2 && year % 4 != 0 && day > 28)) {
+                                                       ast_log(LOG_WARNING, "CDR variable %s is not a valid date ('%s').\n", entry->name, colptr);
+                                                       break;
+                                               }
+
+                                               if (year > 0 && year < 100)
+                                                       year += 2000;
+
+                                               lensql += snprintf(sql + lensql, sizesql - lensql, "%s,", entry->name);
+                                               LENGTHEN_BUF2(10);
+                                               lensql2 += snprintf(sql2 + lensql2, sizesql2 - lensql2, "'%04d-%02d-%02d',", year, month, day);
+                                       }
+                                       break;
+                               case SQL_TYPE_TIME:
+                                       {
+                                               int hour = 0, minute = 0, second = 0;
+                                               int count = sscanf(colptr, "%d:%d:%d", &hour, &minute, &second);
+
+                                               if ((count != 2 && count != 3) || hour < 0 || hour > 23 || minute < 0 || minute > 59 || second < 0 || second > 59) {
+                                                       ast_log(LOG_WARNING, "CDR variable %s is not a valid time ('%s').\n", entry->name, colptr);
+                                                       break;
+                                               }
+
+                                               lensql += snprintf(sql + lensql, sizesql - lensql, "%s,", entry->name);
+                                               LENGTHEN_BUF2(8);
+                                               lensql2 += snprintf(sql2 + lensql2, sizesql2 - lensql2, "'%02d:%02d:%02d',", hour, minute, second);
+                                       }
+                                       break;
+                               case SQL_TYPE_TIMESTAMP:
+                               case SQL_TIMESTAMP:
+                                       {
+                                               int year = 0, month = 0, day = 0, hour = 0, minute = 0, second = 0;
+                                               int count = sscanf(colptr, "%d-%d-%d %d:%d:%d", &year, &month, &day, &hour, &minute, &second);
+
+                                               if ((count != 3 && count != 5 && count != 6) || year <= 0 ||
+                                                       month <= 0 || month > 12 || day < 0 || day > 31 ||
+                                                       ((month == 4 || month == 6 || month == 9 || month == 11) && day == 31) ||
+                                                       (month == 2 && year % 400 == 0 && day > 29) ||
+                                                       (month == 2 && year % 100 == 0 && day > 28) ||
+                                                       (month == 2 && year % 4 == 0 && day > 29) ||
+                                                       (month == 2 && year % 4 != 0 && day > 28) ||
+                                                       hour > 23 || minute > 59 || second > 59 || hour < 0 || minute < 0 || second < 0) {
+                                                       ast_log(LOG_WARNING, "CDR variable %s is not a valid timestamp ('%s').\n", entry->name, colptr);
+                                                       break;
+                                               }
+
+                                               if (year > 0 && year < 100)
+                                                       year += 2000;
+
+                                               lensql += snprintf(sql + lensql, sizesql - lensql, "%s,", entry->name);
+                                               LENGTHEN_BUF2(19);
+                                               lensql2 += snprintf(sql2 + lensql2, sizesql2 - lensql2, "'%04d-%02d-%02d %02d:%02d:%02d',", year, month, day, hour, minute, second);
+                                       }
+                                       break;
+                               case SQL_INTEGER:
+                                       {
+                                               int integer = 0;
+                                               if (sscanf(colptr, "%d", &integer) != 1) {
+                                                       ast_log(LOG_WARNING, "CDR variable %s is not an integer.\n", entry->name);
+                                                       break;
+                                               }
+
+                                               lensql += snprintf(sql + lensql, sizesql - lensql, "%s,", entry->name);
+                                               LENGTHEN_BUF2(12);
+                                               lensql2 += snprintf(sql2 + lensql2, sizesql2 - lensql2, "%d,", integer);
+                                       }
+                                       break;
+                               case SQL_BIGINT:
+                                       {
+                                               long long integer = 0;
+                                               if (sscanf(colptr, "%lld", &integer) != 1) {
+                                                       ast_log(LOG_WARNING, "CDR variable %s is not an integer.\n", entry->name);
+                                                       break;
+                                               }
+
+                                               lensql += snprintf(sql + lensql, sizesql - lensql, "%s,", entry->name);
+                                               LENGTHEN_BUF2(24);
+                                               lensql2 += snprintf(sql2 + lensql2, sizesql2 - lensql2, "%lld,", integer);
+                                       }
+                                       break;
+                               case SQL_SMALLINT:
+                                       {
+                                               short integer = 0;
+                                               if (sscanf(colptr, "%hd", &integer) != 1) {
+                                                       ast_log(LOG_WARNING, "CDR variable %s is not an integer.\n", entry->name);
+                                                       break;
+                                               }
+
+                                               lensql += snprintf(sql + lensql, sizesql - lensql, "%s,", entry->name);
+                                               LENGTHEN_BUF2(6);
+                                               lensql2 += snprintf(sql2 + lensql2, sizesql2 - lensql2, "%d,", integer);
+                                       }
+                                       break;
+                               case SQL_TINYINT:
+                                       {
+                                               char integer = 0;
+                                               if (sscanf(colptr, "%hhd", &integer) != 1) {
+                                                       ast_log(LOG_WARNING, "CDR variable %s is not an integer.\n", entry->name);
+                                                       break;
+                                               }
+
+                                               lensql += snprintf(sql + lensql, sizesql - lensql, "%s,", entry->name);
+                                               LENGTHEN_BUF2(4);
+                                               lensql2 += snprintf(sql2 + lensql2, sizesql2 - lensql2, "%d,", integer);
+                                       }
+                                       break;
+                               case SQL_BIT:
+                                       {
+                                               char integer = 0;
+                                               if (sscanf(colptr, "%hhd", &integer) != 1) {
+                                                       ast_log(LOG_WARNING, "CDR variable %s is not an integer.\n", entry->name);
+                                                       break;
+                                               }
+                                               if (integer != 0)
+                                                       integer = 1;
+
+                                               lensql += snprintf(sql + lensql, sizesql - lensql, "%s,", entry->name);
+                                               LENGTHEN_BUF2(2);
+                                               lensql2 += snprintf(sql2 + lensql2, sizesql2 - lensql2, "%d,", integer);
+                                       }
+                                       break;
+                               case SQL_NUMERIC:
+                               case SQL_DECIMAL:
+                                       {
+                                               double number = 0.0;
+                                               if (sscanf(colptr, "%lf", &number) != 1) {
+                                                       ast_log(LOG_WARNING, "CDR variable %s is not an numeric type.\n", entry->name);
+                                                       break;
+                                               }
+
+                                               lensql += snprintf(sql + lensql, sizesql - lensql, "%s,", entry->name);
+                                               LENGTHEN_BUF2(entry->decimals);
+                                               lensql2 += snprintf(sql2 + lensql2, sizesql2 - lensql2, "%*.*lf,", entry->decimals, entry->radix, number);
+                                       }
+                                       break;
+                               case SQL_FLOAT:
+                               case SQL_REAL:
+                               case SQL_DOUBLE:
+                                       {
+                                               double number = 0.0;
+                                               if (sscanf(colptr, "%lf", &number) != 1) {
+                                                       ast_log(LOG_WARNING, "CDR variable %s is not an numeric type.\n", entry->name);
+                                                       break;
+                                               }
+
+                                               lensql += snprintf(sql + lensql, sizesql - lensql, "%s,", entry->name);
+                                               LENGTHEN_BUF2(entry->decimals);
+                                               lensql2 += snprintf(sql2 + lensql2, sizesql2 - lensql2, "%lf,", number);
+                                       }
+                                       break;
+                               default:
+                                       ast_log(LOG_WARNING, "Column type %d (field '%s:%s:%s') is unsupported at this time.\n", entry->type, tableptr->connection, tableptr->table, entry->name);
+                               }
+                       }
+               }
+
+               /* Concatenate the two constructed buffers */
+               LENGTHEN_BUF1(lensql2);
+               sql[lensql - 1] = ')';
+               sql2[lensql2 - 1] = ')';
+               strcat(sql + lensql, sql2);
+
+               if (option_verbose > 10)
+                       ast_verbose(VERBOSE_PREFIX_4 "[%s]\n", sql);
+               obj = ast_odbc_request_obj(tableptr->connection, 1);
+               if (obj) {
+                       stmt = ast_odbc_prepare_and_execute(obj, generic_prepare, sql);
+                       if (stmt) {
+                               SQLRowCount(stmt, &rows);
+                               SQLFreeHandle(SQL_HANDLE_STMT, stmt);
+                       }
+                       if (rows == 0) {
+                               ast_log(LOG_WARNING, "cdr_adaptive_odbc: Insert failed on '%s:%s'.  CDR failed: %s\n", tableptr->connection, tableptr->table, sql);
+                       }
+                       ast_odbc_release_obj(obj);
+               } else {
+                       ast_log(LOG_WARNING, "cdr_adaptive_odbc: Unable to retrieve database handle for '%s:%s'.  CDR failed: %s\n", tableptr->connection, tableptr->table, sql);
+               }
+       }
+       AST_RWLIST_UNLOCK(&odbc_tables);
+
+       /* Next time, just allocate buffers that are that big to start with. */
+       if (sizesql > maxsize)
+               maxsize = sizesql;
+       if (sizesql2 > maxsize2)
+               maxsize2 = sizesql2;
+
+       ast_free(sql);
+       ast_free(sql2);
+       return 0;
+}
+
+static int unload_module(void)
+{
+       ast_cdr_unregister(name);
+       usleep(1);
+       if (AST_RWLIST_WRLOCK(&odbc_tables)) {
+               ast_cdr_register(name, ast_module_info->description, odbc_log);
+               ast_log(LOG_ERROR, "Unable to lock column list.  Unload failed.\n");
+               return -1;
+       }
+
+       free_config();
+       AST_RWLIST_UNLOCK(&odbc_tables);
+       return 0;
+}
+
+static int load_module(void)
+{
+       if (AST_RWLIST_WRLOCK(&odbc_tables)) {
+               ast_log(LOG_ERROR, "Unable to lock column list.  Load failed.\n");
+               return 0;
+       }
+
+       load_config();
+       AST_RWLIST_UNLOCK(&odbc_tables);
+       ast_cdr_register(name, ast_module_info->description, odbc_log);
+       return 0;
+}
+
+static int reload(void)
+{
+       if (AST_RWLIST_WRLOCK(&odbc_tables)) {
+               ast_log(LOG_ERROR, "Unable to lock column list.  Reload failed.\n");
+               return -1;
+       }
+
+       free_config();
+       load_config();
+       AST_RWLIST_UNLOCK(&odbc_tables);
+       return 0;
+}
+
+AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_DEFAULT, "Adaptive ODBC CDR backend",
+       .load = load_module,
+       .unload = unload_module,
+       .reload = reload,
+);
+
diff --git a/configs/cdr_adaptive_odbc.conf.sample b/configs/cdr_adaptive_odbc.conf.sample
new file mode 100644 (file)
index 0000000..e254bb8
--- /dev/null
@@ -0,0 +1,36 @@
+;
+; This configuration defines the connections and tables for which CDRs may
+; be populated.  Each context specifies a different CDR table to be used.
+;
+; The columns in the tables should match up word-for-word (case-insensitive)
+; to the CDR variables set in the dialplan.  The natural advantage to this
+; system is that beyond setting up the configuration file to tell you what
+; tables to look at, there isn't anything more to do beyond creating the
+; columns for the fields that you want, and populating the corresponding
+; CDR variables in the dialplan.  For the builtin variables only, you may
+; create aliases for the real column name.
+;
+; Please note that after adding columns to the database, it is necessary to
+; reload this module to get the new column names and types read.
+;
+; Warning: if you specify two contexts with exactly the same connection and
+; table names, you will get duplicate records in that table.  So be careful.
+;
+
+[first]
+connection=mysql1
+table=cdr
+
+[second]
+connection=mysql1
+table=extracdr
+
+[third]
+connection=sqlserver
+table=AsteriskCDR
+alias src => source
+alias channel => source_channel
+alias dst => dest
+alias dstchannel => dest_channel
+
+