diff --git a/configs/func_odbc.conf.sample b/configs/func_odbc.conf.sample
new file mode 100644
index 0000000000000000000000000000000000000000..0c4a0151754c63356c44a990c40eb26f2f3218a2
--- /dev/null
+++ b/configs/func_odbc.conf.sample
@@ -0,0 +1,32 @@
+;
+; func_odbc.conf
+;
+; Each context is a separately defined function. By convention, all
+; functions are entirely uppercase, so the defined contexts should also
+; be all-uppercase, but there is nothing that enforces this. All functions
+; are case-sensitive, however.
+;
+; For substitution, you have ${ARG1}, ${ARG2} ... ${ARGn}
+; for the arguments to each SQL statement.
+;
+; In addition, for write statements, you have ${VAL1}, ${VAL2} ... ${VALn}
+; parsed, just like arguments, for the values. In addition, if you want the
+; whole value, never mind the parsing, you can get that with ${VALUE}.
+
+
+; ODBC_SQL - Allow an SQL statement to be built entirely in the dialplan
+[SQL]
+dsn=mysql1
+read=${ARG1}
+
+; ODBC_ANTIGF - A blacklist.
+[ANTIGF]
+dsn=mysql1
+read=SELECT COUNT(*) FROM exgirlfriends WHERE callerid='${ARG1}'
+
+; ODBC_PRESENCE - Retrieve and update presence
+[PRESENCE]
+dsn=mysql1
+read=SELECT location FROM presence WHERE id='${ARG1}'
+write=UPDATE presence SET location='${VAL1}' WHERE id='${ARG1}'
+
diff --git a/funcs/Makefile b/funcs/Makefile
index 14bbd80a3160d2d78122928ec525aef785f91530..cb948a3bd3409d4af900e7a42419a2db71abefd0 100644
--- a/funcs/Makefile
+++ b/funcs/Makefile
@@ -66,6 +66,9 @@ pbx_functions.o: pbx_functions.h
pbx_functions.so: pbx_functions.o #$(BUILTINS)
$(CC) $(SOLINK) -o $@ ${CYGSOLINK} $< ${CYGSOLIB}
+func_odbc.so: func_odbc.o
+ $(CC) $(SOLINK) -o $@ ${CYGSOLINK} $< ${CYGSOLIB} -lodbc
+
install: all
for x in $(FUNCS); do $(INSTALL) -m 755 $$x $(DESTDIR)$(MODULES_DIR) ; done
diff --git a/funcs/func_odbc.c b/funcs/func_odbc.c
new file mode 100644
index 0000000000000000000000000000000000000000..770ac80927556a3b54071aaf784d21d64293eb50
--- /dev/null
+++ b/funcs/func_odbc.c
@@ -0,0 +1,637 @@
+/*
+ * Asterisk -- A telephony toolkit for Linux.
+ *
+ * func_odbc
+ *
+ * Copyright (c) 2005 Tilghman Lesher
+ *
+ * Tilghman Lesher <func_odbc__200508@the-tilghman.com>
+ *
+ * Special thanks to Anthony Minessale II for debugging help.
+ */
+
+#include <sys/types.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <asterisk/file.h>
+#include <asterisk/logger.h>
+#include <asterisk/options.h>
+#include <asterisk/channel.h>
+#include <asterisk/pbx.h>
+#include <asterisk/module.h>
+#include <asterisk/config.h>
+#include <asterisk/res_odbc.h>
+
+static char *tdesc = "ODBC lookups";
+
+static char *config = "func_odbc.conf";
+
+struct acf_odbc_query {
+ char name[30];
+ char dsn[30];
+ char sql_read[512];
+ char sql_write[512];
+ struct ast_custom_function *acf;
+ unsigned int deleteme:1;
+ struct acf_odbc_query *next;
+};
+
+static struct acf_odbc_query *queries = NULL;
+AST_MUTEX_DEFINE_STATIC(query_lock);
+
+#ifdef NEEDTRACE
+static void acf_odbc_error(SQLHSTMT stmt, int res)
+{
+ char state[10] = "", diagnostic[256] = "";
+ SQLINTEGER nativeerror = 0;
+ SQLSMALLINT diagbytes = 0;
+ SQLGetDiagRec(SQL_HANDLE_STMT, stmt, 1, state, &nativeerror, diagnostic, sizeof(diagnostic), &diagbytes);
+ ast_log(LOG_WARNING, "SQL return value %d: error %s: %s (len %d)\n", res, state, diagnostic, diagbytes);
+}
+#endif
+
+/*
+ * Master control routine
+ */
+static void acf_odbc_write(struct ast_channel *chan, char *cmd, char *data, const char *value)
+{
+ odbc_obj *obj;
+ struct acf_odbc_query *query;
+ char *s, *t, *arg, buf[512]="", varname[15];
+ int res, argcount=0, valcount=0, i, retry=0;
+ struct ast_channel *ast;
+ SQLHSTMT stmt;
+ SQLINTEGER nativeerror=0, numfields=0, rows=0;
+ SQLSMALLINT diagbytes=0;
+ unsigned char state[10], diagnostic[256];
+#ifdef NEEDTRACE
+ SQLINTEGER enable = 1;
+ char *tracefile = "/tmp/odbc.trace";
+#endif
+
+ ast_mutex_lock(&query_lock);
+ for (query=queries; query; query = query->next) {
+ if (!strcasecmp(query->name, cmd + 5)) {
+ break;
+ }
+ }
+
+ if (!query) {
+ ast_log(LOG_ERROR, "No such function '%s'\n", cmd);
+ ast_mutex_unlock(&query_lock);
+ return;
+ }
+
+ obj = fetch_odbc_obj(query->dsn, 0);
+
+ if (!obj) {
+ ast_log(LOG_ERROR, "No such DSN registered: %s (check res_odbc.conf)\n", query->dsn);
+ ast_mutex_unlock(&query_lock);
+ return;
+ }
+
+ /* Parse our arguments */
+ s = ast_strdupa(data);
+ if (value) {
+ t = ast_strdupa(value);
+ } else {
+ t = "";
+ }
+
+ if (!s || !t) {
+ ast_log(LOG_ERROR, "Out of memory\n");
+ ast_mutex_unlock(&query_lock);
+ return;
+ }
+
+ /* XXX You might be tempted to change this section into using
+ * pbx_builtin_pushvar_helper(). However, note that if you try
+ * to set a NULL (like for VALUE), then nothing gets set, and the
+ * value doesn't get masked out. Even worse, when you subsequently
+ * try to remove the value you just set, you'll wind up unsetting
+ * the previous value (which is wholly undesireable). Hence, this
+ * has to remain the way it is done here. XXX
+ */
+
+ /* Save old arguments as variables in a fake channel */
+ ast = ast_channel_alloc(0);
+ while ((arg = strsep(&s, "|"))) {
+ argcount++;
+ snprintf(varname, sizeof(varname), "ARG%d", argcount);
+ pbx_builtin_setvar_helper(ast, varname, pbx_builtin_getvar_helper(chan, varname));
+ pbx_builtin_setvar_helper(chan, varname, arg);
+ }
+
+ /* Parse values, just like arguments */
+ while ((arg = strsep(&t, "|"))) {
+ valcount++;
+ snprintf(varname, sizeof(varname), "VAL%d", valcount);
+ pbx_builtin_setvar_helper(ast, varname, pbx_builtin_getvar_helper(chan, varname));
+ pbx_builtin_setvar_helper(chan, varname, arg);
+ }
+
+ /* Additionally set the value as a whole */
+ /* Note that pbx_builtin_setvar_helper will quite happily take a NULL for the 3rd argument */
+ pbx_builtin_setvar_helper(ast, "VALUE", pbx_builtin_getvar_helper(chan, "VALUE"));
+ pbx_builtin_setvar_helper(chan, "VALUE", value);
+
+ pbx_substitute_variables_helper(chan, query->sql_write, buf, sizeof(buf) - 1);
+
+ /* Restore prior values */
+ for (i=1; i<=argcount; i++) {
+ snprintf(varname, sizeof(varname), "ARG%d", argcount);
+ pbx_builtin_setvar_helper(chan, varname, pbx_builtin_getvar_helper(ast, varname));
+ }
+
+ for (i=1; i<=valcount; i++) {
+ snprintf(varname, sizeof(varname), "VAL%d", argcount);
+ pbx_builtin_setvar_helper(chan, varname, pbx_builtin_getvar_helper(ast, varname));
+ }
+ pbx_builtin_setvar_helper(chan, "VALUE", pbx_builtin_getvar_helper(ast, "VALUE"));
+
+ ast_channel_free(ast);
+ ast_mutex_unlock(&query_lock);
+
+retry_write:
+#ifdef NEEDTRACE
+ SQLSetConnectAttr(obj->con, SQL_ATTR_TRACE, &enable, SQL_IS_INTEGER);
+ SQLSetConnectAttr(obj->con, SQL_ATTR_TRACEFILE, tracefile, strlen(tracefile));
+#endif
+
+ 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");
+ pbx_builtin_setvar_helper(chan, "ODBCROWS", "-1");
+ return;
+ }
+
+ res = SQLPrepare(stmt, (unsigned char *)buf, SQL_NTS);
+ if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
+ ast_log(LOG_WARNING, "SQL Prepare failed![%s]\n", buf);
+ SQLFreeHandle (SQL_HANDLE_STMT, stmt);
+ pbx_builtin_setvar_helper(chan, "ODBCROWS", "-1");
+ return;
+ }
+
+ res = SQLExecute(stmt);
+ if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
+ if (res == SQL_ERROR) {
+ 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);
+ odbc_obj_disconnect(obj);
+ /* All handles are now invalid (after a disconnect), so we gotta redo all handles */
+ odbc_obj_connect(obj);
+ if (!retry) {
+ retry = 1;
+ goto retry_write;
+ }
+ rows = -1;
+ } else {
+ /* Rows affected */
+ SQLRowCount(stmt, &rows);
+ }
+
+ /* Output the affected rows, for all cases. In the event of failure, we
+ * flag this as -1 rows. Note that this is different from 0 affected rows
+ * which would be the case if we succeeded in our query, but the values did
+ * not change. */
+ snprintf(varname, sizeof(varname), "%d", (int)rows);
+ pbx_builtin_setvar_helper(chan, "ODBCROWS", varname);
+
+ if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
+ ast_log(LOG_WARNING, "SQL Execute error!\n[%s]\n\n", buf);
+ }
+
+ SQLFreeHandle(SQL_HANDLE_STMT, stmt);
+}
+
+static char *acf_odbc_read(struct ast_channel *chan, char *cmd, char *data, char *buf, size_t len)
+{
+ odbc_obj *obj;
+ struct acf_odbc_query *query;
+ char *s, *arg, sql[512] = "", varname[15];
+ int count=0, res, x;
+ SQLHSTMT stmt;
+ SQLSMALLINT colcount=0;
+ SQLINTEGER indicator;
+#ifdef NEEDTRACE
+ SQLINTEGER enable = 1;
+ char *tracefile = "/tmp/odbc.trace";
+#endif
+
+ ast_mutex_lock(&query_lock);
+ for (query=queries; query; query = query->next) {
+ if (!strcasecmp(query->name, cmd + 5)) {
+ break;
+ }
+ }
+
+ if (!query) {
+ ast_log(LOG_ERROR, "No such function '%s'\n", cmd);
+ ast_mutex_unlock(&query_lock);
+ return "";
+ }
+
+ obj = fetch_odbc_obj(query->dsn, 0);
+
+ if (!obj) {
+ ast_log(LOG_ERROR, "No such DSN registered: %s (check res_odbc.conf)\n", query->dsn);
+ ast_mutex_unlock(&query_lock);
+ return "";
+ }
+
+#ifdef NEEDTRACE
+ SQLSetConnectAttr(obj->con, SQL_ATTR_TRACE, &enable, SQL_IS_INTEGER);
+ SQLSetConnectAttr(obj->con, SQL_ATTR_TRACEFILE, tracefile, strlen(tracefile));
+#endif
+
+ /* Parse our arguments */
+ s = ast_strdupa(data);
+ if (!s) {
+ ast_log(LOG_ERROR, "Out of memory\n");
+ ast_mutex_unlock(&query_lock);
+ return "";
+ }
+
+ while ((arg = strsep(&s, "|"))) {
+ count++;
+ snprintf(varname, sizeof(varname), "ARG%d", count);
+ /* arg is by definition non-NULL, so this works, here */
+ pbx_builtin_pushvar_helper(chan, varname, arg);
+ }
+
+ pbx_substitute_variables_helper(chan, query->sql_read, sql, sizeof(sql) - 1);
+
+ /* Restore prior values */
+ for (x = 1; x <= count; x++) {
+ snprintf(varname, sizeof(varname), "ARG%d", x);
+ pbx_builtin_setvar_helper(chan, varname, NULL);
+ }
+
+ ast_mutex_unlock(&query_lock);
+
+ 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 "";
+ }
+
+ 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);
+ SQLFreeHandle (SQL_HANDLE_STMT, stmt);
+ return "";
+ }
+
+ res = odbc_smart_execute(obj, stmt);
+ if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
+ ast_log(LOG_WARNING, "SQL Execute error!\n[%s]\n\n", sql);
+ SQLFreeHandle (SQL_HANDLE_STMT, stmt);
+ return "";
+ }
+
+ res = SQLNumResultCols(stmt, &colcount);
+ if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
+ ast_log(LOG_WARNING, "SQL Column Count error!\n[%s]\n\n", sql);
+ SQLFreeHandle (SQL_HANDLE_STMT, stmt);
+ return "";
+ }
+
+ memset(buf, 0, len);
+
+ res = SQLFetch(stmt);
+ if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
+ if (res == SQL_NO_DATA) {
+ if (option_verbose > 3) {
+ ast_verbose(VERBOSE_PREFIX_4 "Found no rows [%s]\n", sql);
+ }
+ } else if (option_verbose > 3) {
+ ast_log(LOG_WARNING, "Error %d in FETCH [%s]\n", res, sql);
+ }
+ goto acf_out;
+ }
+
+ for (x=0; x<colcount; x++) {
+ int buflen, coldatalen;
+ char coldata[256];
+
+ buflen = strlen(buf);
+ res = SQLGetData(stmt, x + 1, SQL_CHAR, coldata, sizeof(coldata), &indicator);
+ if (indicator == SQL_NULL_DATA) {
+ coldata[0] = '\0';
+ res = SQL_SUCCESS;
+ }
+
+ if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
+ ast_log(LOG_WARNING, "SQL Get Data error!\n[%s]\n\n", sql);
+ SQLFreeHandle(SQL_HANDLE_STMT, stmt);
+ return "";
+ }
+
+ strncat(buf + buflen, coldata, len - buflen);
+ coldatalen = strlen(coldata);
+ strncat(buf + buflen + coldatalen, ",", len - buflen - coldatalen);
+ }
+ /* Trim trailing comma */
+ buf[strlen(buf) - 1] = '\0';
+
+acf_out:
+ SQLFreeHandle(SQL_HANDLE_STMT, stmt);
+ return buf;
+}
+
+static int init_acf_query(struct ast_config *cfg, char *catg, struct acf_odbc_query **query)
+{
+ char *tmp;
+
+ if (!cfg || !catg) {
+ return -1;
+ }
+
+ *query = calloc(1, sizeof(struct acf_odbc_query));
+ if (! (*query))
+ return -1;
+
+ ast_copy_string((*query)->name, catg, sizeof((*query)->name));
+
+ if ((tmp = ast_variable_retrieve(cfg, catg, "dsn"))) {
+ ast_copy_string((*query)->dsn, tmp, sizeof((*query)->dsn));
+ } else {
+ return -1;
+ }
+
+ if ((tmp = ast_variable_retrieve(cfg, catg, "read"))) {
+ ast_copy_string((*query)->sql_read, tmp, sizeof((*query)->sql_read));
+ }
+
+ if ((tmp = ast_variable_retrieve(cfg, catg, "write"))) {
+ ast_copy_string((*query)->sql_write, tmp, sizeof((*query)->sql_write));
+ }
+
+ (*query)->acf = calloc(1, sizeof(struct ast_custom_function));
+ if ((*query)->acf) {
+ asprintf(&((*query)->acf->name), "ODBC_%s", catg);
+ asprintf(&((*query)->acf->syntax), "ODBC_%s(<arg1>[...[,<argN>]])", catg);
+ (*query)->acf->synopsis = "Runs the referenced query with the specified arguments";
+ if (!ast_strlen_zero((*query)->sql_read) && !ast_strlen_zero((*query)->sql_write)) {
+ asprintf(&((*query)->acf->desc),
+ "Runs the following query, as defined in func_odbc.conf, performing\n"
+ "substitution of the arguments into the query as specified by ${ARG1},\n"
+ "${ARG2}, ... ${ARGn}. When setting the function, the values are provided\n"
+ "either in whole as ${VALUE} or parsed as ${VAL1}, ${VAL2}, ... ${VALn}.\n"
+ "\nRead:\n%s\n\nWrite:\n%s\n",
+ (*query)->sql_read,
+ (*query)->sql_write);
+ } else if (!ast_strlen_zero((*query)->sql_read)) {
+ asprintf(&((*query)->acf->desc),
+ "Runs the following query, as defined in func_odbc.conf, performing\n"
+ "substitution of the arguments into the query as specified by ${ARG1},\n"
+ "${ARG2}, ... ${ARGn}. This function may only be read, not set.\n\nSQL:\n%s\n",
+ (*query)->sql_read);
+ } else if (!ast_strlen_zero((*query)->sql_write)) {
+ asprintf(&((*query)->acf->desc),
+ "Runs the following query, as defined in func_odbc.conf, performing\n"
+ "substitution of the arguments into the query as specified by ${ARG1},\n"
+ "${ARG2}, ... ${ARGn}. The values are provided either in whole as\n"
+ "${VALUE} or parsed as ${VAL1}, ${VAL2}, ... ${VALn}.\n"
+ "This function may only be set.\nSQL:\n%s\n",
+ (*query)->sql_write);
+ }
+
+ if (ast_strlen_zero((*query)->sql_read)) {
+ (*query)->acf->read = NULL;
+ } else {
+ (*query)->acf->read = acf_odbc_read;
+ }
+
+ if (ast_strlen_zero((*query)->sql_write)) {
+ (*query)->acf->write = NULL;
+ } else {
+ (*query)->acf->write = acf_odbc_write;
+ }
+
+ if (! (*query)->acf->name || ! (*query)->acf->syntax || ! (*query)->acf->desc) {
+ return -1;
+ }
+ } else {
+ return -1;
+ }
+ return 0;
+}
+
+static int free_acf_query(struct acf_odbc_query *query)
+{
+ if (query) {
+ if (query->acf) {
+ if (query->acf->name)
+ free(query->acf->name);
+ if (query->acf->syntax)
+ free(query->acf->syntax);
+ if (query->acf->desc)
+ free(query->acf->desc);
+ free(query->acf);
+ }
+ free(query);
+ }
+ return 0;
+}
+
+static int odbc_load_module(void)
+{
+ int res = 0;
+ struct ast_config *cfg;
+ char *catg;
+
+ ast_mutex_lock(&query_lock);
+
+ cfg = ast_config_load(config);
+ if (!cfg) {
+ ast_log(LOG_WARNING, "Unable to load config for func_odbc: %s\n", config);
+ goto out;
+ }
+
+ for (catg = ast_category_browse(cfg, NULL);
+ catg;
+ catg = ast_category_browse(cfg, catg)) {
+ struct acf_odbc_query *query=NULL;
+
+ if (init_acf_query(cfg, catg, &query)) {
+ ast_log(LOG_ERROR, "Out of memory\n");
+ free_acf_query(query);
+ } else {
+ query->next = queries;
+ queries = query;
+ ast_custom_function_register(query->acf);
+ }
+ }
+
+ ast_config_destroy(cfg);
+out:
+ ast_mutex_unlock(&query_lock);
+ return res;
+}
+
+static int odbc_unload_module(void)
+{
+ struct acf_odbc_query *query, *lastquery = NULL;
+
+ ast_mutex_lock(&query_lock);
+ for (query = queries; query; query = query->next) {
+ if (lastquery)
+ free_acf_query(lastquery);
+ if (ast_custom_function_unregister(query->acf)) {
+ ast_log(LOG_ERROR, "Cannot unregister function '%s'?\n", query->acf->name);
+ /* Keep state valid */
+ queries = query;
+ ast_mutex_unlock(&query_lock);
+ return -1;
+ } else {
+ /* If anything is waiting on this lock, this will let it pass (avoids a race) */
+ ast_mutex_unlock(&query_lock);
+ ast_mutex_lock(&query_lock);
+ lastquery = query;
+ }
+ }
+ if (lastquery)
+ free(lastquery);
+ queries = NULL;
+
+ ast_mutex_unlock(&query_lock);
+ return 0;
+}
+
+int reload(void)
+{
+ int res = 0;
+ struct ast_config *cfg;
+ struct acf_odbc_query *q, *prevq = NULL, *qdel = NULL;
+ char *catg;
+
+ ast_mutex_lock(&query_lock);
+
+ for (q = queries; q; q = q->next) {
+ q->deleteme = 1;
+ }
+
+ cfg = ast_config_load(config);
+ if (!cfg) {
+ ast_log(LOG_WARNING, "Unable to load config for func_odbc: %s\n", config);
+ goto reload_out;
+ }
+
+ for (catg = ast_category_browse(cfg, NULL);
+ catg;
+ catg = ast_category_browse(cfg, catg)) {
+ struct acf_odbc_query *query = NULL;
+
+ /* We do this piecemeal, so that we stay in a consistent state, if there's ever an error */
+ for (q = queries, prevq=NULL; q; prevq=q, q = q->next) {
+ if (!strcasecmp(catg, q->name)) {
+ break;
+ }
+ }
+
+ if (init_acf_query(cfg, catg, &query)) {
+ ast_log(LOG_ERROR, "Cannot initialize query ODBC_%s\n", catg);
+ free_acf_query(query);
+ } else {
+ if (q) {
+ /* Replacement */
+ if (ast_custom_function_unregister(q->acf)) {
+ ast_log(LOG_ERROR, "Cannot reload query %s\n", query->acf->name);
+ free_acf_query(query);
+ } else {
+ ast_custom_function_register(query->acf);
+ /* Add it to the list */
+ if (prevq)
+ prevq->next = query;
+ else
+ queries = query;
+ query->next = q->next;
+ /* Get rid of the old record */
+ free_acf_query(q);
+ }
+ } else {
+ /* New */
+ query->next = queries;
+ queries = query;
+ ast_custom_function_register(query->acf);
+ }
+ }
+ }
+
+ /* Any remaining sets will now be destroyed */
+ for (q = queries; q; q = q->next) {
+ if (qdel) {
+ free_acf_query(qdel);
+ qdel = NULL;
+ }
+
+ if (q->deleteme) {
+ if (ast_custom_function_unregister(q->acf)) {
+ ast_log(LOG_ERROR, "Cannot unregister function? Refusing to make 'ODBC_%s' go away.\n", q->name);
+ } else {
+ /* If anything is waiting on the lock to execute, this will dispose of it (without a race) */
+ ast_mutex_unlock(&query_lock);
+ ast_mutex_lock(&query_lock);
+
+ if (prevq) {
+ prevq->next = q->next;
+ } else {
+ queries = q->next;
+ }
+ qdel = q;
+ }
+ } else {
+ prevq = q;
+ }
+ }
+ if (qdel)
+ free_acf_query(qdel);
+
+ ast_config_destroy(cfg);
+reload_out:
+ ast_mutex_unlock(&query_lock);
+ return res;
+}
+
+int unload_module(void)
+{
+ return odbc_unload_module();
+}
+
+int load_module(void)
+{
+ return odbc_load_module();
+}
+
+char *description(void)
+{
+ return tdesc;
+}
+
+int usecount(void)
+{
+ if (! ast_mutex_trylock(&query_lock)) {
+ ast_mutex_unlock(&query_lock);
+ return 0;
+ } else {
+ return 1;
+ }
+}
+
+char *key()
+{
+ return ASTERISK_GPL_KEY;
+}