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-rw-r--r--trunk/res/res_odbc.c778
1 files changed, 778 insertions, 0 deletions
diff --git a/trunk/res/res_odbc.c b/trunk/res/res_odbc.c
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+++ b/trunk/res/res_odbc.c
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+/*
+ * Asterisk -- An open source telephony toolkit.
+ *
+ * Copyright (C) 1999 - 2005, Digium, Inc.
+ *
+ * Mark Spencer <markster@digium.com>
+ *
+ * res_odbc.c <ODBC resource manager>
+ * Copyright (C) 2004 - 2005 Anthony Minessale II <anthmct@yahoo.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 ODBC resource manager
+ *
+ * \author Mark Spencer <markster@digium.com>
+ * \author Anthony Minessale II <anthmct@yahoo.com>
+ *
+ * \arg See also: \ref cdr_odbc
+ */
+
+/*** MODULEINFO
+ <depend>unixodbc</depend>
+ <depend>ltdl</depend>
+ ***/
+
+#include "asterisk.h"
+
+ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
+
+#include "asterisk/file.h"
+#include "asterisk/channel.h"
+#include "asterisk/config.h"
+#include "asterisk/pbx.h"
+#include "asterisk/module.h"
+#include "asterisk/cli.h"
+#include "asterisk/lock.h"
+#include "asterisk/res_odbc.h"
+
+struct odbc_class
+{
+ AST_LIST_ENTRY(odbc_class) list;
+ char name[80];
+ char dsn[80];
+ char *username;
+ char *password;
+ char sanitysql[256];
+ SQLHENV env;
+ unsigned int haspool:1; /* Boolean - TDS databases need this */
+ unsigned int limit:10; /* Gives a limit of 1023 maximum */
+ unsigned int count:10; /* Running count of pooled connections */
+ unsigned int delme:1; /* Purge the class */
+ unsigned int backslash_is_escape:1; /* On this database, the backslash is a native escape sequence */
+ AST_LIST_HEAD(, odbc_obj) odbc_obj;
+};
+
+AST_LIST_HEAD_STATIC(odbc_list, odbc_class);
+
+static odbc_status odbc_obj_connect(struct odbc_obj *obj);
+static odbc_status odbc_obj_disconnect(struct odbc_obj *obj);
+static int odbc_register_class(struct odbc_class *class, int connect);
+
+
+SQLHSTMT ast_odbc_direct_execute(struct odbc_obj *obj, SQLHSTMT (*exec_cb)(struct odbc_obj *obj, void *data), void *data)
+{
+ int attempt;
+ SQLHSTMT stmt;
+
+ for (attempt = 0; attempt < 2; attempt++) {
+ stmt = exec_cb(obj, data);
+
+ if (stmt) {
+ break;
+ } else {
+ obj->up = 0;
+ ast_log(LOG_WARNING, "SQL Exec Direct failed. Attempting a reconnect...\n");
+
+ odbc_obj_disconnect(obj);
+ odbc_obj_connect(obj);
+ }
+ }
+
+ return stmt;
+}
+
+SQLHSTMT ast_odbc_prepare_and_execute(struct odbc_obj *obj, SQLHSTMT (*prepare_cb)(struct odbc_obj *obj, void *data), void *data)
+{
+ int res = 0, i, attempt;
+ SQLINTEGER nativeerror=0, numfields=0;
+ SQLSMALLINT diagbytes=0;
+ unsigned char state[10], diagnostic[256];
+ SQLHSTMT stmt;
+
+ for (attempt = 0; attempt < 2; attempt++) {
+ /* This prepare callback may do more than just prepare -- it may also
+ * bind parameters, bind results, etc. The real key, here, is that
+ * when we disconnect, all handles become invalid for most databases.
+ * We must therefore redo everything when we establish a new
+ * connection. */
+ stmt = prepare_cb(obj, data);
+
+ if (stmt) {
+ res = SQLExecute(stmt);
+ if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO) && (res != SQL_NO_DATA)) {
+ 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;
+ }
+ }
+ }
+
+ ast_log(LOG_WARNING, "SQL Execute error %d! Attempting a reconnect...\n", res);
+ SQLFreeHandle(SQL_HANDLE_STMT, stmt);
+ stmt = NULL;
+
+ obj->up = 0;
+ /*
+ * While this isn't the best way to try to correct an error, this won't automatically
+ * fail when the statement handle invalidates.
+ */
+ ast_odbc_sanity_check(obj);
+ continue;
+ }
+ break;
+ } else if (attempt == 0)
+ ast_odbc_sanity_check(obj);
+ }
+
+ return stmt;
+}
+
+int ast_odbc_smart_execute(struct odbc_obj *obj, SQLHSTMT stmt)
+{
+ int res = 0, i;
+ SQLINTEGER nativeerror=0, numfields=0;
+ SQLSMALLINT diagbytes=0;
+ unsigned char state[10], diagnostic[256];
+
+ res = SQLExecute(stmt);
+ if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO) && (res != SQL_NO_DATA)) {
+ 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;
+ }
+ }
+ }
+#if 0
+ /* This is a really bad method of trying to correct a dead connection. It
+ * only ever really worked with MySQL. It will not work with any other
+ * database, since most databases prepare their statements on the server,
+ * and if you disconnect, you invalidate the statement handle. Hence, if
+ * you disconnect, you're going to fail anyway, whether you try to execute
+ * a second time or not.
+ */
+ ast_log(LOG_WARNING, "SQL Execute error %d! Attempting a reconnect...\n", res);
+ ast_mutex_lock(&obj->lock);
+ obj->up = 0;
+ ast_mutex_unlock(&obj->lock);
+ odbc_obj_disconnect(obj);
+ odbc_obj_connect(obj);
+ res = SQLExecute(stmt);
+#endif
+ }
+
+ return res;
+}
+
+
+int ast_odbc_sanity_check(struct odbc_obj *obj)
+{
+ char *test_sql = "select 1";
+ SQLHSTMT stmt;
+ int res = 0;
+
+ if (!ast_strlen_zero(obj->parent->sanitysql))
+ test_sql = obj->parent->sanitysql;
+
+ if (obj->up) {
+ res = SQLAllocHandle(SQL_HANDLE_STMT, obj->con, &stmt);
+ if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
+ obj->up = 0;
+ } else {
+ res = SQLPrepare(stmt, (unsigned char *)test_sql, SQL_NTS);
+ if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
+ obj->up = 0;
+ } else {
+ res = SQLExecute(stmt);
+ if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
+ obj->up = 0;
+ }
+ }
+ }
+ SQLFreeHandle (SQL_HANDLE_STMT, stmt);
+ }
+
+ if (!obj->up) { /* Try to reconnect! */
+ ast_log(LOG_WARNING, "Connection is down attempting to reconnect...\n");
+ odbc_obj_disconnect(obj);
+ odbc_obj_connect(obj);
+ }
+ return obj->up;
+}
+
+static int load_odbc_config(void)
+{
+ static char *cfg = "res_odbc.conf";
+ struct ast_config *config;
+ struct ast_variable *v;
+ char *cat;
+ const char *dsn, *username, *password, *sanitysql;
+ int enabled, pooling, limit, bse;
+ int connect = 0, res = 0;
+ struct ast_flags config_flags = { 0 };
+
+ struct odbc_class *new;
+
+ config = ast_config_load(cfg, config_flags);
+ if (!config) {
+ ast_log(LOG_WARNING, "Unable to load config file res_odbc.conf\n");
+ return -1;
+ }
+ for (cat = ast_category_browse(config, NULL); cat; cat=ast_category_browse(config, cat)) {
+ if (!strcasecmp(cat, "ENV")) {
+ for (v = ast_variable_browse(config, cat); v; v = v->next) {
+ setenv(v->name, v->value, 1);
+ ast_log(LOG_NOTICE, "Adding ENV var: %s=%s\n", v->name, v->value);
+ }
+ } else {
+ /* Reset all to defaults for each class of odbc connections */
+ dsn = username = password = sanitysql = NULL;
+ enabled = 1;
+ connect = 0;
+ pooling = 0;
+ limit = 0;
+ bse = 1;
+ for (v = ast_variable_browse(config, cat); v; v = v->next) {
+ if (!strcasecmp(v->name, "pooling")) {
+ if (ast_true(v->value))
+ pooling = 1;
+ } else if (!strcasecmp(v->name, "limit")) {
+ sscanf(v->value, "%d", &limit);
+ if (ast_true(v->value) && !limit) {
+ ast_log(LOG_WARNING, "Limit should be a number, not a boolean: '%s'. Setting limit to 1023 for ODBC class '%s'.\n", v->value, cat);
+ limit = 1023;
+ } else if (ast_false(v->value)) {
+ ast_log(LOG_WARNING, "Limit should be a number, not a boolean: '%s'. Disabling ODBC class '%s'.\n", v->value, cat);
+ enabled = 0;
+ break;
+ }
+ } else if (!strcasecmp(v->name, "enabled")) {
+ enabled = ast_true(v->value);
+ } else if (!strcasecmp(v->name, "pre-connect")) {
+ connect = ast_true(v->value);
+ } else if (!strcasecmp(v->name, "dsn")) {
+ dsn = v->value;
+ } else if (!strcasecmp(v->name, "username")) {
+ username = v->value;
+ } else if (!strcasecmp(v->name, "password")) {
+ password = v->value;
+ } else if (!strcasecmp(v->name, "sanitysql")) {
+ sanitysql = v->value;
+ } else if (!strcasecmp(v->name, "backslash_is_escape")) {
+ bse = ast_true(v->value);
+ }
+ }
+
+ if (enabled && !ast_strlen_zero(dsn)) {
+ new = ast_calloc(1, sizeof(*new));
+
+ if (!new) {
+ res = -1;
+ break;
+ }
+
+ if (cat)
+ ast_copy_string(new->name, cat, sizeof(new->name));
+ if (dsn)
+ ast_copy_string(new->dsn, dsn, sizeof(new->dsn));
+ if (username)
+ new->username = ast_strdup(username);
+ if (password)
+ new->password = ast_strdup(password);
+ if (sanitysql)
+ ast_copy_string(new->sanitysql, sanitysql, sizeof(new->sanitysql));
+
+ SQLAllocHandle(SQL_HANDLE_ENV, SQL_NULL_HANDLE, &new->env);
+ res = SQLSetEnvAttr(new->env, SQL_ATTR_ODBC_VERSION, (void *) SQL_OV_ODBC3, 0);
+
+ if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
+ ast_log(LOG_WARNING, "res_odbc: Error SetEnv\n");
+ SQLFreeHandle(SQL_HANDLE_ENV, new->env);
+ return res;
+ }
+
+ if (pooling) {
+ new->haspool = pooling;
+ if (limit) {
+ new->limit = limit;
+ } else {
+ ast_log(LOG_WARNING, "Pooling without also setting a limit is pointless. Changing limit from 0 to 5.\n");
+ new->limit = 5;
+ }
+ }
+
+ new->backslash_is_escape = bse ? 1 : 0;
+
+ odbc_register_class(new, connect);
+ ast_log(LOG_NOTICE, "Registered ODBC class '%s' dsn->[%s]\n", cat, dsn);
+ }
+ }
+ }
+ ast_config_destroy(config);
+ return res;
+}
+
+static char *handle_cli_odbc_show(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
+{
+ struct odbc_class *class;
+ struct odbc_obj *current;
+ int length = 0;
+ int which = 0;
+ char *ret = NULL;
+
+ switch (cmd) {
+ case CLI_INIT:
+ e->command = "odbc show";
+ e->usage =
+ "Usage: odbc show [class]\n"
+ " List settings of a particular ODBC class or,\n"
+ " if not specified, all classes.\n";
+ return NULL;
+ case CLI_GENERATE:
+ if (a->pos != 2)
+ return NULL;
+ length = strlen(a->word);
+ AST_LIST_LOCK(&odbc_list);
+ AST_LIST_TRAVERSE(&odbc_list, class, list) {
+ if (!strncasecmp(a->word, class->name, length) && ++which > a->n) {
+ ret = ast_strdup(class->name);
+ break;
+ }
+ }
+ if (!ret && !strncasecmp(a->word, "all", length) && ++which > a->n) {
+ ret = ast_strdup("all");
+ }
+ AST_LIST_UNLOCK(&odbc_list);
+ return ret;
+ }
+
+ ast_cli(a->fd, "\nODBC DSN Settings\n");
+ ast_cli(a->fd, "-----------------\n\n");
+ AST_LIST_LOCK(&odbc_list);
+ AST_LIST_TRAVERSE(&odbc_list, class, list) {
+ if ((a->argc == 2) || (a->argc == 3 && !strcmp(a->argv[2], "all")) || (!strcmp(a->argv[2], class->name))) {
+ int count = 0;
+ ast_cli(a->fd, " Name: %s\n DSN: %s\n", class->name, class->dsn);
+
+ if (class->haspool) {
+ ast_cli(a->fd, " Pooled: Yes\n Limit: %d\n Connections in use: %d\n", class->limit, class->count);
+
+ AST_LIST_TRAVERSE(&(class->odbc_obj), current, list) {
+ ast_cli(a->fd, " - Connection %d: %s\n", ++count, current->used ? "in use" : current->up && ast_odbc_sanity_check(current) ? "connected" : "disconnected");
+ }
+ } else {
+ /* Should only ever be one of these */
+ AST_LIST_TRAVERSE(&(class->odbc_obj), current, list) {
+ ast_cli(a->fd, " Pooled: No\n Connected: %s\n", current->up && ast_odbc_sanity_check(current) ? "Yes" : "No");
+ }
+ }
+ ast_cli(a->fd, "\n");
+ }
+ }
+ AST_LIST_UNLOCK(&odbc_list);
+
+ return CLI_SUCCESS;
+}
+
+static struct ast_cli_entry cli_odbc[] = {
+ AST_CLI_DEFINE(handle_cli_odbc_show, "List ODBC DSN(s)")
+};
+
+static int odbc_register_class(struct odbc_class *class, int connect)
+{
+ struct odbc_obj *obj;
+ if (class) {
+ AST_LIST_LOCK(&odbc_list);
+ AST_LIST_INSERT_HEAD(&odbc_list, class, list);
+ AST_LIST_UNLOCK(&odbc_list);
+
+ if (connect) {
+ /* Request and release builds a connection */
+ obj = ast_odbc_request_obj(class->name, 0);
+ if (obj)
+ ast_odbc_release_obj(obj);
+ }
+
+ return 0;
+ } else {
+ ast_log(LOG_WARNING, "Attempted to register a NULL class?\n");
+ return -1;
+ }
+}
+
+void ast_odbc_release_obj(struct odbc_obj *obj)
+{
+ /* For pooled connections, this frees the connection to be
+ * reused. For non-pooled connections, it does nothing. */
+ obj->used = 0;
+}
+
+int ast_odbc_backslash_is_escape(struct odbc_obj *obj)
+{
+ return obj->parent->backslash_is_escape;
+}
+
+struct odbc_obj *ast_odbc_request_obj(const char *name, int check)
+{
+ struct odbc_obj *obj = NULL;
+ struct odbc_class *class;
+
+ AST_LIST_LOCK(&odbc_list);
+ AST_LIST_TRAVERSE(&odbc_list, class, list) {
+ if (!strcmp(class->name, name))
+ break;
+ }
+ AST_LIST_UNLOCK(&odbc_list);
+
+ if (!class)
+ return NULL;
+
+ AST_LIST_LOCK(&class->odbc_obj);
+ if (class->haspool) {
+ /* Recycle connections before building another */
+ AST_LIST_TRAVERSE(&class->odbc_obj, obj, list) {
+ if (! obj->used) {
+ obj->used = 1;
+ break;
+ }
+ }
+
+ if (!obj && (class->count < class->limit)) {
+ class->count++;
+ obj = ast_calloc(1, sizeof(*obj));
+ if (!obj) {
+ AST_LIST_UNLOCK(&class->odbc_obj);
+ return NULL;
+ }
+ ast_mutex_init(&obj->lock);
+ obj->parent = class;
+ if (odbc_obj_connect(obj) == ODBC_FAIL) {
+ ast_log(LOG_WARNING, "Failed to connect to %s\n", name);
+ ast_mutex_destroy(&obj->lock);
+ ast_free(obj);
+ obj = NULL;
+ class->count--;
+ } else {
+ obj->used = 1;
+ AST_LIST_INSERT_TAIL(&class->odbc_obj, obj, list);
+ }
+ }
+ } else {
+ /* Non-pooled connection: multiple modules can use the same connection. */
+ AST_LIST_TRAVERSE(&class->odbc_obj, obj, list) {
+ /* Non-pooled connection: if there is an entry, return it */
+ break;
+ }
+
+ if (!obj) {
+ /* No entry: build one */
+ obj = ast_calloc(1, sizeof(*obj));
+ if (!obj) {
+ AST_LIST_UNLOCK(&class->odbc_obj);
+ return NULL;
+ }
+ ast_mutex_init(&obj->lock);
+ obj->parent = class;
+ if (odbc_obj_connect(obj) == ODBC_FAIL) {
+ ast_log(LOG_WARNING, "Failed to connect to %s\n", name);
+ ast_mutex_destroy(&obj->lock);
+ ast_free(obj);
+ obj = NULL;
+ } else {
+ AST_LIST_INSERT_HEAD(&class->odbc_obj, obj, list);
+ }
+ }
+ }
+ AST_LIST_UNLOCK(&class->odbc_obj);
+
+ if (obj && check) {
+ ast_odbc_sanity_check(obj);
+ }
+ return obj;
+}
+
+static odbc_status odbc_obj_disconnect(struct odbc_obj *obj)
+{
+ int res;
+ ast_mutex_lock(&obj->lock);
+
+ res = SQLDisconnect(obj->con);
+
+ if (res == ODBC_SUCCESS) {
+ ast_log(LOG_WARNING, "res_odbc: disconnected %d from %s [%s]\n", res, obj->parent->name, obj->parent->dsn);
+ } else {
+ ast_log(LOG_WARNING, "res_odbc: %s [%s] already disconnected\n",
+ obj->parent->name, obj->parent->dsn);
+ }
+ obj->up = 0;
+ ast_mutex_unlock(&obj->lock);
+ return ODBC_SUCCESS;
+}
+
+static odbc_status odbc_obj_connect(struct odbc_obj *obj)
+{
+ int res;
+ SQLINTEGER err;
+ short int mlen;
+ unsigned char msg[200], stat[10];
+#ifdef NEEDTRACE
+ SQLINTEGER enable = 1;
+ char *tracefile = "/tmp/odbc.trace";
+#endif
+ ast_mutex_lock(&obj->lock);
+
+ res = SQLAllocHandle(SQL_HANDLE_DBC, obj->parent->env, &obj->con);
+
+ if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
+ ast_log(LOG_WARNING, "res_odbc: Error AllocHDB %d\n", res);
+ ast_mutex_unlock(&obj->lock);
+ return ODBC_FAIL;
+ }
+ SQLSetConnectAttr(obj->con, SQL_LOGIN_TIMEOUT, (SQLPOINTER *) 10, 0);
+ SQLSetConnectAttr(obj->con, SQL_ATTR_CONNECTION_TIMEOUT, (SQLPOINTER *) 10, 0);
+#ifdef NEEDTRACE
+ SQLSetConnectAttr(obj->con, SQL_ATTR_TRACE, &enable, SQL_IS_INTEGER);
+ SQLSetConnectAttr(obj->con, SQL_ATTR_TRACEFILE, tracefile, strlen(tracefile));
+#endif
+
+ if (obj->up) {
+ odbc_obj_disconnect(obj);
+ ast_log(LOG_NOTICE, "Re-connecting %s\n", obj->parent->name);
+ } else {
+ ast_log(LOG_NOTICE, "Connecting %s\n", obj->parent->name);
+ }
+
+ res = SQLConnect(obj->con,
+ (SQLCHAR *) obj->parent->dsn, SQL_NTS,
+ (SQLCHAR *) obj->parent->username, SQL_NTS,
+ (SQLCHAR *) obj->parent->password, SQL_NTS);
+
+ if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
+ SQLGetDiagRec(SQL_HANDLE_DBC, obj->con, 1, stat, &err, msg, 100, &mlen);
+ ast_mutex_unlock(&obj->lock);
+ ast_log(LOG_WARNING, "res_odbc: Error SQLConnect=%d errno=%d %s\n", res, (int)err, msg);
+ return ODBC_FAIL;
+ } else {
+ ast_log(LOG_NOTICE, "res_odbc: Connected to %s [%s]\n", obj->parent->name, obj->parent->dsn);
+ obj->up = 1;
+ }
+
+ ast_mutex_unlock(&obj->lock);
+ return ODBC_SUCCESS;
+}
+
+static int reload(void)
+{
+ static char *cfg = "res_odbc.conf";
+ struct ast_config *config;
+ struct ast_variable *v;
+ char *cat;
+ const char *dsn, *username, *password, *sanitysql;
+ int enabled, pooling, limit, bse;
+ int connect = 0, res = 0;
+ struct ast_flags config_flags = { CONFIG_FLAG_FILEUNCHANGED };
+
+ struct odbc_class *new, *class;
+ struct odbc_obj *current;
+
+ /* First, mark all to be purged */
+ AST_LIST_LOCK(&odbc_list);
+ AST_LIST_TRAVERSE(&odbc_list, class, list) {
+ class->delme = 1;
+ }
+
+ config = ast_config_load(cfg, config_flags);
+ if (config != NULL && config != CONFIG_STATUS_FILEUNCHANGED) {
+ for (cat = ast_category_browse(config, NULL); cat; cat=ast_category_browse(config, cat)) {
+ if (!strcasecmp(cat, "ENV")) {
+ for (v = ast_variable_browse(config, cat); v; v = v->next) {
+ setenv(v->name, v->value, 1);
+ ast_log(LOG_NOTICE, "Adding ENV var: %s=%s\n", v->name, v->value);
+ }
+ } else {
+ char *freeme = NULL;
+ /* Reset all to defaults for each class of odbc connections */
+ dsn = username = password = sanitysql = NULL;
+ enabled = 1;
+ connect = 0;
+ pooling = 0;
+ limit = 0;
+ bse = 1;
+ for (v = ast_variable_browse(config, cat); v; v = v->next) {
+ if (!strcasecmp(v->name, "pooling")) {
+ pooling = 1;
+ } else if (!strcasecmp(v->name, "limit")) {
+ sscanf(v->value, "%d", &limit);
+ if (ast_true(v->value) && !limit) {
+ ast_log(LOG_WARNING, "Limit should be a number, not a boolean: '%s'. Setting limit to 1023 for ODBC class '%s'.\n", v->value, cat);
+ limit = 1023;
+ } else if (ast_false(v->value)) {
+ ast_log(LOG_WARNING, "Limit should be a number, not a boolean: '%s'. Disabling ODBC class '%s'.\n", v->value, cat);
+ enabled = 0;
+ break;
+ }
+ } else if (!strcasecmp(v->name, "enabled")) {
+ enabled = ast_true(v->value);
+ } else if (!strcasecmp(v->name, "pre-connect")) {
+ connect = ast_true(v->value);
+ } else if (!strcasecmp(v->name, "dsn")) {
+ dsn = v->value;
+ } else if (!strcasecmp(v->name, "username")) {
+ username = v->value;
+ } else if (!strcasecmp(v->name, "password")) {
+ password = v->value;
+ } else if (!strcasecmp(v->name, "sanitysql")) {
+ sanitysql = v->value;
+ } else if (!strcasecmp(v->name, "backslash_is_escape")) {
+ bse = ast_true(v->value);
+ }
+ }
+
+ if (enabled && !ast_strlen_zero(dsn)) {
+ /* First, check the list to see if it already exists */
+ AST_LIST_TRAVERSE(&odbc_list, class, list) {
+ if (!strcmp(class->name, cat)) {
+ class->delme = 0;
+ break;
+ }
+ }
+
+ if (class) {
+ new = class;
+ } else {
+ new = ast_calloc(1, sizeof(*new));
+ }
+
+ if (!new) {
+ res = -1;
+ break;
+ }
+
+ if (cat)
+ ast_copy_string(new->name, cat, sizeof(new->name));
+ if (dsn)
+ ast_copy_string(new->dsn, dsn, sizeof(new->dsn));
+
+ /* Safely replace username */
+ if (class && class->username)
+ freeme = class->username;
+ if (username)
+ new->username = ast_strdup(username);
+ if (freeme) {
+ ast_free(freeme);
+ freeme = NULL;
+ }
+
+ /* Safely replace password */
+ if (class && class->password)
+ freeme = class->password;
+ if (password)
+ new->password = ast_strdup(password);
+ if (freeme) {
+ ast_free(freeme);
+ freeme = NULL;
+ }
+
+ if (sanitysql)
+ ast_copy_string(new->sanitysql, sanitysql, sizeof(new->sanitysql));
+
+ if (!class) {
+ SQLAllocHandle(SQL_HANDLE_ENV, SQL_NULL_HANDLE, &new->env);
+ res = SQLSetEnvAttr(new->env, SQL_ATTR_ODBC_VERSION, (void *) SQL_OV_ODBC3, 0);
+
+ if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
+ ast_log(LOG_WARNING, "res_odbc: Error SetEnv\n");
+ SQLFreeHandle(SQL_HANDLE_ENV, new->env);
+ AST_LIST_UNLOCK(&odbc_list);
+ return res;
+ }
+ }
+
+ if (pooling) {
+ new->haspool = pooling;
+ if (limit) {
+ new->limit = limit;
+ } else {
+ ast_log(LOG_WARNING, "Pooling without also setting a limit is pointless. Changing limit from 0 to 5.\n");
+ new->limit = 5;
+ }
+ }
+
+ new->backslash_is_escape = bse;
+
+ if (class) {
+ ast_log(LOG_NOTICE, "Refreshing ODBC class '%s' dsn->[%s]\n", cat, dsn);
+ } else {
+ odbc_register_class(new, connect);
+ ast_log(LOG_NOTICE, "Registered ODBC class '%s' dsn->[%s]\n", cat, dsn);
+ }
+ }
+ }
+ }
+ ast_config_destroy(config);
+ }
+
+ /* Purge classes that we know can go away (pooled with 0, only) */
+ AST_LIST_TRAVERSE_SAFE_BEGIN(&odbc_list, class, list) {
+ if (class->delme && class->haspool && class->count == 0) {
+ while ((current = AST_LIST_REMOVE_HEAD(&class->odbc_obj, list))) {
+ odbc_obj_disconnect(current);
+ ast_mutex_destroy(&current->lock);
+ ast_free(current);
+ }
+
+ AST_LIST_REMOVE_CURRENT(list);
+ if (class->username)
+ ast_free(class->username);
+ if (class->password)
+ ast_free(class->password);
+ ast_free(class);
+ }
+ }
+ AST_LIST_TRAVERSE_SAFE_END;
+ AST_LIST_UNLOCK(&odbc_list);
+
+ return 0;
+}
+
+static int unload_module(void)
+{
+ /* Prohibit unloading */
+ return -1;
+}
+
+static int load_module(void)
+{
+ if (load_odbc_config() == -1)
+ return AST_MODULE_LOAD_DECLINE;
+ ast_cli_register_multiple(cli_odbc, sizeof(cli_odbc) / sizeof(struct ast_cli_entry));
+ ast_log(LOG_NOTICE, "res_odbc loaded.\n");
+ return 0;
+}
+
+AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_GLOBAL_SYMBOLS, "ODBC resource",
+ .load = load_module,
+ .unload = unload_module,
+ .reload = reload,
+ );
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-24 14:19:54 +0000