Merge the new Channel Event Logging (CEL) subsystem.

CEL is the new system for logging channel events.  This was inspired after
facing many problems trying to represent what is possible to happen to a call
in Asterisk using CDR records.  For more information on CEL, see the built in
HTML or PDF documentation generated from the files in doc/tex/.

Many thanks to Steve Murphy (murf) and Brian Degenhardt (bmd) for their hard
work developing this code.  Also, thanks to Matt Nicholson (mnicholson) and
Sean Bright (seanbright) for their assistance in the final push to get this
code ready for Asterisk trunk.

Review: https://reviewboard.asterisk.org/r/239/


git-svn-id: http://svn.digium.com/svn/asterisk/trunk@203638 f38db490-d61c-443f-a65b-d21fe96a405b

1 files changed, 771 insertions, 0 deletions

diff --git a/cel/cel_adaptive_odbc.c b/cel/cel_adaptive_odbc.c
new file mode 100644
index 000000000..984f0590f
--- /dev/null
+++ b/cel/cel_adaptive_odbc.c
@@ -0,0 +1,771 @@
+/*
+ * Asterisk -- An open source telephony toolkit.
+ *
+ * Copyright (C) 2008 Digium
+ *
+ * Adapted from cdr_adaptive_odbc:
+ * Tilghman Lesher <cdr_adaptive_odbc__v1@the-tilghman.com>
+ * by Steve Murphy
+ *
+ * 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 CEL backend
+ *
+ * \author Tilghman Lesher <cdr_adaptive_odbc__v1@the-tilghman.com>
+ * \ingroup cel_drivers
+ */
+
+/*** MODULEINFO
+	<depend>generic_odbc</depend>
+	<depend>ltdl</depend>
+ ***/
+
+#include "asterisk.h"
+
+ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
+
+#include <sys/types.h>
+#include <time.h>
+
+#include <sql.h>
+#include <sqlext.h>
+#include <sqltypes.h>
+
+#include "asterisk/config.h"
+#include "asterisk/channel.h"
+#include "asterisk/lock.h"
+#include "asterisk/linkedlists.h"
+#include "asterisk/res_odbc.h"
+#include "asterisk/cel.h"
+#include "asterisk/module.h"
+
+#define	CONFIG	"cel_adaptive_odbc.conf"
+static struct ast_event_sub *event_sub = NULL;
+
+/* Optimization to reduce number of memory allocations */
+static int maxsize = 512, maxsize2 = 512;
+
+struct columns {
+	char *name;
+	char *celname;
+	char *filtervalue;
+	char *staticvalue;
+	SQLSMALLINT type;
+	SQLINTEGER size;
+	SQLSMALLINT decimals;
+	SQLSMALLINT radix;
+	SQLSMALLINT nullable;
+	SQLINTEGER octetlen;
+	AST_LIST_ENTRY(columns) list;
+};
+
+struct tables {
+	char *connection;
+	char *table;
+	unsigned int usegmtime:1;
+	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, usegmtime = 0;
+	SQLLEN sqlptr;
+	int res = 0;
+	SQLHSTMT stmt = NULL;
+	struct ast_flags config_flags = { 0 }; /* Part of our config comes from the database */
+
+	cfg = ast_config_load(CONFIG, config_flags);
+	if (!cfg || cfg == CONFIG_STATUS_FILEINVALID) {
+		ast_log(LOG_WARNING, "Unable to load " CONFIG ".  No adaptive ODBC CEL records!\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);
+
+		if (!ast_strlen_zero(tmp = ast_variable_retrieve(cfg, catg, "usegmtime"))) {
+			usegmtime = ast_true(tmp);
+		}
+
+		/* When loading, we want to be sure we can connect. */
+		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 'cel'.\n");
+			tmp = "cel";
+		}
+		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->usegmtime = usegmtime;
+		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);
+
+		ast_verb(3, "Found adaptive CEL table %s@%s.\n", tableptr->table, tableptr->connection);
+
+		/* Check for filters first */
+		for (var = ast_variable_browse(cfg, catg); var; var = var->next) {
+			if (strncmp(var->name, "filter", 6) == 0) {
+				char *celvar = ast_strdupa(var->name + 6);
+				celvar = ast_strip(celvar);
+				ast_verb(3, "Found filter %s for cel variable %s in %s@%s\n", var->value, celvar, tableptr->table, tableptr->connection);
+
+				entry = ast_calloc(sizeof(char), sizeof(*entry) + strlen(celvar) + 1 + strlen(var->value) + 1);
+				if (!entry) {
+					ast_log(LOG_ERROR, "Out of memory creating filter entry for CEL variable '%s' in table '%s' on connection '%s'\n", celvar, table, connection);
+					res = -1;
+					break;
+				}
+
+				/* NULL column entry means this isn't a column in the database */
+				entry->name = NULL;
+				entry->celname = (char *)entry + sizeof(*entry);
+				entry->filtervalue = (char *)entry + sizeof(*entry) + strlen(celvar) + 1;
+				strcpy(entry->celname, celvar);
+				strcpy(entry->filtervalue, var->value);
+
+				AST_LIST_INSERT_TAIL(&(tableptr->columns), entry, list);
+			}
+		}
+
+		while ((res = SQLFetch(stmt)) != SQL_NO_DATA && res != SQL_ERROR) {
+			char *celvar = "", *staticvalue = "";
+
+			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 (strncmp(var->name, "alias", 5) == 0 && strcasecmp(var->value, columnname) == 0) {
+					char *alias = ast_strdupa(var->name + 5);
+					celvar = ast_strip(alias);
+					ast_verb(3, "Found alias %s for column %s in %s@%s\n", celvar, columnname, tableptr->table, tableptr->connection);
+					break;
+				} else if (strncmp(var->name, "static", 6) == 0 && strcasecmp(var->value, columnname) == 0) {
+					char *item = ast_strdupa(var->name + 6);
+					item = ast_strip(item);
+					if (item[0] == '"' && item[strlen(item) - 1] == '"') {
+						/* Remove surrounding quotes */
+						item[strlen(item) - 1] = '\0';
+						item++;
+					}
+					staticvalue = item;
+				}
+			}
+
+			entry = ast_calloc(sizeof(char), sizeof(*entry) + strlen(columnname) + 1 + strlen(celvar) + 1 + strlen(staticvalue) + 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(celvar)) {
+				entry->celname = entry->name + strlen(columnname) + 1;
+				strcpy(entry->celname, celvar);
+			} else { /* Point to same place as the column name */
+				entry->celname = (char *)entry + sizeof(*entry);
+			}
+
+			if (!ast_strlen_zero(staticvalue)) {
+				entry->staticvalue = entry->celname + strlen(entry->celname) + 1;
+				strcpy(entry->staticvalue, staticvalue);
+			}
+
+			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);
+
+			/* Specification states that the octenlen should be the maximum number of bytes
+			 * returned in a char or binary column, but it seems that some drivers just set
+			 * it to NULL. (Bad Postgres! No biscuit!) */
+			if (entry->octetlen == 0)
+				entry->octetlen = entry->size;
+
+			ast_verb(10, "Found %s column with type %hd with len %ld, octetlen %ld, and numlen (%hd,%hd)\n", entry->name, entry->type, (long) entry->size, (long) entry->octetlen, entry->decimals, entry->radix);
+			/* Insert column info into column list */
+			AST_LIST_INSERT_TAIL(&(tableptr->columns), entry, list);
+			res = 0;
+		}
+
+		SQLFreeHandle(SQL_HANDLE_STMT, stmt);
+		ast_odbc_release_obj(obj);
+
+		if (AST_LIST_FIRST(&(tableptr->columns)))
+			AST_RWLIST_INSERT_TAIL(&odbc_tables, tableptr, list);
+		else
+			ast_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 (ast_str_strlen(sql) + size + 1 > ast_str_size(sql)) {       \
+					if (ast_str_make_space(&sql, ((ast_str_size(sql) + size + 1) / 512 + 1) * 512) != 0) { \
+						ast_log(LOG_ERROR, "Unable to allocate sufficient memory.  Insert CEL '%s:%s' failed.\n", tableptr->connection, tableptr->table); \
+						ast_free(sql);											\
+						ast_free(sql2);											\
+						AST_RWLIST_UNLOCK(&odbc_tables);						\
+						return;													\
+					}															\
+				}																\
+			} while (0)
+
+#define LENGTHEN_BUF2(size)														\
+			do {																\
+				if (ast_str_strlen(sql2) + size + 1 > ast_str_size(sql2)) {     \
+					if (ast_str_make_space(&sql2, ((ast_str_size(sql2) + size + 3) / 512 + 1) * 512) != 0) { \
+						ast_log(LOG_ERROR, "Unable to allocate sufficient memory.  Insert CEL '%s:%s' failed.\n", tableptr->connection, tableptr->table); \
+						ast_free(sql);											\
+						ast_free(sql2);											\
+						AST_RWLIST_UNLOCK(&odbc_tables);						\
+						return;													\
+					}															\
+				}																\
+			} while (0)
+
+static void odbc_log(const struct ast_event *event, void *userdata)
+{
+	struct tables *tableptr;
+	struct columns *entry;
+	struct odbc_obj *obj;
+	struct ast_str *sql = ast_str_create(maxsize), *sql2 = ast_str_create(maxsize2);
+	char *tmp;
+	char colbuf[1024], *colptr;
+	SQLHSTMT stmt = NULL;
+	SQLLEN rows = 0;
+	struct ast_cel_event_record record = {
+		.version = AST_CEL_EVENT_RECORD_VERSION,
+	};
+
+	if (ast_cel_fill_record(event, &record)) {
+		return;
+	}
+
+	if (!sql || !sql2) {
+		if (sql)
+			ast_free(sql);
+		if (sql2)
+			ast_free(sql2);
+		return;
+	}
+
+	if (AST_RWLIST_RDLOCK(&odbc_tables)) {
+		ast_log(LOG_ERROR, "Unable to lock table list.  Insert CEL(s) failed.\n");
+		ast_free(sql);
+		ast_free(sql2);
+		return;
+	}
+
+	AST_LIST_TRAVERSE(&odbc_tables, tableptr, list) {
+		int first = 1;
+		ast_str_set(&sql, 0, "INSERT INTO %s (", tableptr->table);
+		ast_str_set(&sql2, 0, " VALUES (");
+
+		/* No need to check the connection now; we'll handle any failure in prepare_and_execute */
+		if (!(obj = ast_odbc_request_obj(tableptr->connection, 0))) {
+			ast_log(LOG_WARNING, "cel_adaptive_odbc: Unable to retrieve database handle for '%s:%s'.  CEL failed: %s\n", tableptr->connection, tableptr->table, ast_str_buffer(sql));
+			continue;
+		}
+
+		AST_LIST_TRAVERSE(&(tableptr->columns), entry, list) {
+			int datefield = 0;
+			if (strcasecmp(entry->celname, "eventtime") == 0) {
+				datefield = 1;
+			}
+
+			/* Check if we have a similarly named variable */
+			if (entry->staticvalue) {
+				colptr = ast_strdupa(entry->staticvalue);
+			} else if (datefield) {
+				struct timeval date_tv = record.event_time;
+				struct ast_tm tm = { 0, };
+				ast_localtime(&date_tv, &tm, tableptr->usegmtime ? "UTC" : NULL);
+				ast_strftime(colbuf, sizeof(colbuf), "%Y-%m-%d %H:%M:%S", &tm);
+				colptr = colbuf;
+			} else {
+				if (strcmp(entry->celname, "userdeftype") == 0) {
+					strncpy(colbuf, record.user_defined_name, sizeof(colbuf));
+				} else if (strcmp(entry->celname, "cid_name") == 0) {
+					strncpy(colbuf, record.caller_id_name, sizeof(colbuf));
+				} else if (strcmp(entry->celname, "cid_num") == 0) {
+					strncpy(colbuf, record.caller_id_num, sizeof(colbuf));
+				} else if (strcmp(entry->celname, "cid_ani") == 0) {
+					strncpy(colbuf, record.caller_id_ani, sizeof(colbuf));
+				} else if (strcmp(entry->celname, "cid_rdnis") == 0) {
+					strncpy(colbuf, record.caller_id_rdnis, sizeof(colbuf));
+				} else if (strcmp(entry->celname, "cid_dnid") == 0) {
+					strncpy(colbuf, record.caller_id_dnid, sizeof(colbuf));
+				} else if (strcmp(entry->celname, "exten") == 0) {
+					strncpy(colbuf, record.extension, sizeof(colbuf));
+				} else if (strcmp(entry->celname, "context") == 0) {
+					strncpy(colbuf, record.context, sizeof(colbuf));
+				} else if (strcmp(entry->celname, "channame") == 0) {
+					strncpy(colbuf, record.channel_name, sizeof(colbuf));
+				} else if (strcmp(entry->celname, "appname") == 0) {
+					strncpy(colbuf, record.application_name, sizeof(colbuf));
+				} else if (strcmp(entry->celname, "appdata") == 0) {
+					strncpy(colbuf, record.application_data, sizeof(colbuf));
+				} else if (strcmp(entry->celname, "accountcode") == 0) {
+					strncpy(colbuf, record.account_code, sizeof(colbuf));
+				} else if (strcmp(entry->celname, "peeraccount") == 0) {
+					strncpy(colbuf, record.peer_account, sizeof(colbuf));
+				} else if (strcmp(entry->celname, "uniqueid") == 0) {
+					strncpy(colbuf, record.unique_id, sizeof(colbuf));
+				} else if (strcmp(entry->celname, "linkedid") == 0) {
+					strncpy(colbuf, record.linked_id, sizeof(colbuf));
+				} else if (strcmp(entry->celname, "userfield") == 0) {
+					strncpy(colbuf, record.user_field, sizeof(colbuf));
+				} else if (strcmp(entry->celname, "peer") == 0) {
+					strncpy(colbuf, record.peer, sizeof(colbuf));
+				} else if (strcmp(entry->celname, "amaflags") == 0) {
+					snprintf(colbuf, sizeof(colbuf), "%d", record.amaflag);
+				} else {
+					colbuf[0] = 0;
+				}
+				colptr = colbuf;
+			}
+
+			if (colptr) {
+				/* Check first if the column filters this entry.  Note that this
+				 * is very specifically NOT ast_strlen_zero(), because the filter
+				 * could legitimately specify that the field is blank, which is
+				 * different from the field being unspecified (NULL). */
+				if (entry->filtervalue && strcasecmp(colptr, entry->filtervalue) != 0) {
+					ast_verb(4, "CEL column '%s' with value '%s' does not match filter of"
+						" '%s'.  Cancelling this CEL.\n",
+						entry->celname, colptr, entry->filtervalue);
+					goto early_release;
+				}
+
+				/* Only a filter? */
+				if (ast_strlen_zero(entry->name))
+					continue;
+
+				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, "eventtype") == 0) {
+						snprintf(colbuf, sizeof(colbuf), "%s", record.event_name);
+					}
+
+					/* Truncate too-long fields */
+					if (entry->type != SQL_GUID) {
+						if (strlen(colptr) > entry->octetlen) {
+							colptr[entry->octetlen] = '\0';
+						}
+					}
+
+					ast_str_append(&sql, 0, "%s%s", first ? "" : ",", entry->name);
+					LENGTHEN_BUF2(strlen(colptr));
+
+					/* Encode value, with escaping */
+					ast_str_append(&sql2, 0, "%s'", first ? "" : ",");
+					for (tmp = colptr; *tmp; tmp++) {
+						if (*tmp == '\'') {
+							ast_str_append(&sql2, 0, "''");
+						} else if (*tmp == '\\' && ast_odbc_backslash_is_escape(obj)) {
+							ast_str_append(&sql2, 0, "\\\\");
+						} else {
+							ast_str_append(&sql2, 0, "%c", *tmp);
+						}
+					}
+					ast_str_append(&sql2, 0, "'");
+					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, "CEL variable %s is not a valid date ('%s').\n", entry->name, colptr);
+							continue;
+						}
+
+						if (year > 0 && year < 100) {
+							year += 2000;
+						}
+
+						ast_str_append(&sql, 0, "%s%s", first ? "" : ",", entry->name);
+						LENGTHEN_BUF2(17);
+						ast_str_append(&sql2, 0, "%s{ d '%04d-%02d-%02d' }", first ? "" : ",", 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, "CEL variable %s is not a valid time ('%s').\n", entry->name, colptr);
+							continue;
+						}
+
+						ast_str_append(&sql, 0, "%s%s", first ? "" : ",", entry->name);
+						LENGTHEN_BUF2(15);
+						ast_str_append(&sql2, 0, "%s{ t '%02d:%02d:%02d' }", first ? "" : ",", 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, "CEL variable %s is not a valid timestamp ('%s').\n", entry->name, colptr);
+							continue;
+						}
+
+						if (year > 0 && year < 100) {
+							year += 2000;
+						}
+
+						ast_str_append(&sql, 0, "%s%s", first ? "" : ",", entry->name);
+						LENGTHEN_BUF2(26);
+						ast_str_append(&sql2, 0, "%s{ ts '%04d-%02d-%02d %02d:%02d:%02d' }", first ? "" : ",", year, month, day, hour, minute, second);
+					}
+					break;
+				case SQL_INTEGER:
+					{
+						int integer = 0;
+						if (strcasecmp(entry->name, "eventtype") == 0) {
+							integer = (int) record.event_type;
+						} else if (sscanf(colptr, "%d", &integer) != 1) {
+							ast_log(LOG_WARNING, "CEL variable %s is not an integer.\n", entry->name);
+							continue;
+						}
+
+						ast_str_append(&sql, 0, "%s%s", first ? "" : ",", entry->name);
+						LENGTHEN_BUF2(12);
+						ast_str_append(&sql2, 0, "%s%d", first ? "" : ",", integer);
+					}
+					break;
+				case SQL_BIGINT:
+					{
+						long long integer = 0;
+						if (strcasecmp(entry->name, "eventtype") == 0) {
+							integer = (long long) record.event_type;
+						} else if (sscanf(colptr, "%lld", &integer) != 1) {
+							ast_log(LOG_WARNING, "CEL variable %s is not an integer.\n", entry->name);
+							continue;
+						}
+
+						ast_str_append(&sql, 0, "%s%s", first ? "" : ",", entry->name);
+						LENGTHEN_BUF2(24);
+						ast_str_append(&sql2, 0, "%s%lld", first ? "" : ",", integer);
+					}
+					break;
+				case SQL_SMALLINT:
+					{
+						short integer = 0;
+						if (strcasecmp(entry->name, "eventtype") == 0) {
+							integer = (short) record.event_type;
+						} else if (sscanf(colptr, "%hd", &integer) != 1) {
+							ast_log(LOG_WARNING, "CEL variable %s is not an integer.\n", entry->name);
+							continue;
+						}
+
+						ast_str_append(&sql, 0, "%s%s", first ? "" : ",", entry->name);
+						LENGTHEN_BUF2(6);
+						ast_str_append(&sql2, 0, "%s%d", first ? "" : ",", integer);
+					}
+					break;
+				case SQL_TINYINT:
+					{
+						char integer = 0;
+						if (strcasecmp(entry->name, "eventtype") == 0) {
+							integer = (char) record.event_type;
+						} else if (sscanf(colptr, "%hhd", &integer) != 1) {
+							ast_log(LOG_WARNING, "CEL variable %s is not an integer.\n", entry->name);
+							continue;
+						}
+
+						ast_str_append(&sql, 0, "%s%s", first ? "" : ",", entry->name);
+						LENGTHEN_BUF2(4);
+						ast_str_append(&sql2, 0, "%s%d", first ? "" : ",", integer);
+					}
+					break;
+				case SQL_BIT:
+					{
+						char integer = 0;
+						if (strcasecmp(entry->name, "eventtype") == 0) {
+							integer = (char) record.event_type;
+						} else if (sscanf(colptr, "%hhd", &integer) != 1) {
+							ast_log(LOG_WARNING, "CEL variable %s is not an integer.\n", entry->name);
+							continue;
+						}
+						if (integer != 0)
+							integer = 1;
+
+						ast_str_append(&sql, 0, "%s%s", first ? "" : ",", entry->name);
+						LENGTHEN_BUF2(2);
+						ast_str_append(&sql2, 0, "%s%d", first ? "" : ",", integer);
+					}
+					break;
+				case SQL_NUMERIC:
+				case SQL_DECIMAL:
+					{
+						double number = 0.0;
+						if (strcasecmp(entry->name, "eventtype") == 0) {
+							number = (double)record.event_type;
+						} else if (sscanf(colptr, "%lf", &number) != 1) {
+							ast_log(LOG_WARNING, "CEL variable %s is not an numeric type.\n", entry->name);
+							continue;
+						}
+
+						ast_str_append(&sql, 0, "%s%s", first ? "" : ",", entry->name);
+						LENGTHEN_BUF2(entry->decimals);
+						ast_str_append(&sql2, 0, "%s%*.*lf", first ? "" : ",", entry->decimals, entry->radix, number);
+					}
+					break;
+				case SQL_FLOAT:
+				case SQL_REAL:
+				case SQL_DOUBLE:
+					{
+						double number = 0.0;
+						if (strcasecmp(entry->name, "eventtype") == 0) {
+							number = (double) record.event_type;
+						} else if (sscanf(colptr, "%lf", &number) != 1) {
+							ast_log(LOG_WARNING, "CEL variable %s is not an numeric type.\n", entry->name);
+							continue;
+						}
+
+						ast_str_append(&sql, 0, "%s%s", first ? "" : ",", entry->name);
+						LENGTHEN_BUF2(entry->decimals);
+						ast_str_append(&sql2, 0, "%s%lf", first ? "" : ",", 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);
+					continue;
+				}
+				first = 0;
+			}
+		}
+
+		/* Concatenate the two constructed buffers */
+		LENGTHEN_BUF1(ast_str_strlen(sql2));
+		ast_str_append(&sql, 0, ")");
+		ast_str_append(&sql2, 0, ")");
+		ast_str_append(&sql, 0, "%s", ast_str_buffer(sql2));
+
+		ast_verb(11, "[%s]\n", ast_str_buffer(sql));
+
+		stmt = ast_odbc_prepare_and_execute(obj, generic_prepare, ast_str_buffer(sql));
+		if (stmt) {
+			SQLRowCount(stmt, &rows);
+			SQLFreeHandle(SQL_HANDLE_STMT, stmt);
+		}
+		if (rows == 0) {
+			ast_log(LOG_WARNING, "cel_adaptive_odbc: Insert failed on '%s:%s'.  CEL failed: %s\n", tableptr->connection, tableptr->table, ast_str_buffer(sql));
+		}
+early_release:
+		ast_odbc_release_obj(obj);
+	}
+	AST_RWLIST_UNLOCK(&odbc_tables);
+
+	/* Next time, just allocate buffers that are that big to start with. */
+	if (ast_str_strlen(sql) > maxsize) {
+		maxsize = ast_str_strlen(sql);
+	}
+	if (ast_str_strlen(sql2) > maxsize2) {
+		maxsize2 = ast_str_strlen(sql2);
+	}
+
+	ast_free(sql);
+	ast_free(sql2);
+}
+
+static int unload_module(void)
+{
+	if (event_sub) {
+		event_sub = ast_event_unsubscribe(event_sub);
+	}
+	if (AST_RWLIST_WRLOCK(&odbc_tables)) {
+		event_sub = ast_event_subscribe(AST_EVENT_CEL, odbc_log, "Adaptive ODBC CEL backend", NULL, AST_EVENT_IE_END);
+		if (!event_sub) {
+			ast_log(LOG_ERROR, "cel_adaptive_odbc: Unable to subscribe to CEL events\n");
+		}
+		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);
+	event_sub = ast_event_subscribe(AST_EVENT_CEL, odbc_log, "Adaptive ODBC CEL backend", NULL, AST_EVENT_IE_END);
+	if (!event_sub) {
+		ast_log(LOG_ERROR, "cel_odbc: Unable to subscribe to CEL events\n");
+	}
+	return AST_MODULE_LOAD_SUCCESS;
+}
+
+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 AST_MODULE_LOAD_SUCCESS;
+}
+
+AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_DEFAULT, "Adaptive ODBC CEL backend",
+	.load = load_module,
+	.unload = unload_module,
+	.reload = reload,
+);
+