Merged revisions 89559 via svnmerge from
https://origsvn.digium.com/svn/asterisk/branches/1.4 ........ r89559 | tilghman | 2007-11-25 11:17:10 -0600 (Sun, 25 Nov 2007) | 14 lines We previously attempted to use the ESCAPE clause to set the escape delimiter to a backslash. Unfortunately, this does not universally work on all databases, since on databases which natively use the backslash as a delimiter, the backslash itself needs to be delimited, but on other databases that have no delimiter, backslashing the backslash causes an error. So the only solution that I can come up with is to create an option in res_odbc that explicitly specifies whether or not backslash is a native delimiter. If it is, we use it natively; if not, we use the ESCAPE clause to make it one. Reported by: elguero Patch by: tilghman (Closes issue #11364) ........ git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@89561 65c4cc65-6c06-0410-ace0-fbb531ad65f3
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@ -40,6 +40,9 @@ username => oscar
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password => thegrouch
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pre-connect => yes
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sanitysql => select count(*) from systables
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; Many databases have a default of '\' to escape special characters. MS SQL
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; Server does not.
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backslash_is_escape => no
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@ -93,6 +93,12 @@ void ast_odbc_release_obj(struct odbc_obj *obj);
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*/
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int ast_odbc_sanity_check(struct odbc_obj *obj);
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/*! \brief Checks if the database natively supports backslash as an escape character.
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* \param obj The ODBC object
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* \return Returns 1 if an ESCAPE clause is needed to support '\', 0 otherwise
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*/
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int ast_odbc_backslash_is_escape(struct odbc_obj *obj);
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/*! \brief Executes an non prepared statement and returns the resulting
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* statement handle.
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* \param obj The ODBC object
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@ -142,11 +142,12 @@ static struct ast_variable *realtime_odbc(const char *database, const char *tabl
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return NULL;
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newval = va_arg(aq, const char *);
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op = !strchr(newparam, ' ') ? " =" : "";
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snprintf(sql, sizeof(sql), "SELECT * FROM %s WHERE %s%s ?", table, newparam, op);
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snprintf(sql, sizeof(sql), "SELECT * FROM %s WHERE %s%s ?%s", table, newparam, op,
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strcasestr(newparam, "LIKE") && !ast_odbc_backslash_is_escape(obj) ? " ESCAPE '\\'" : "");
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while((newparam = va_arg(aq, const char *))) {
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op = !strchr(newparam, ' ') ? " =" : "";
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snprintf(sql + strlen(sql), sizeof(sql) - strlen(sql), " AND %s%s ?%s", newparam, op,
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strcasestr(newparam, "LIKE") ? " ESCAPE '\\'" : "");
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strcasestr(newparam, "LIKE") && !ast_odbc_backslash_is_escape(obj) ? " ESCAPE '\\'" : "");
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newval = va_arg(aq, const char *);
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}
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va_end(aq);
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@ -290,11 +291,11 @@ static struct ast_config *realtime_multi_odbc(const char *database, const char *
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newval = va_arg(aq, const char *);
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op = !strchr(newparam, ' ') ? " =" : "";
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snprintf(sql, sizeof(sql), "SELECT * FROM %s WHERE %s%s ?%s", table, newparam, op,
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strcasestr(newparam, "LIKE") ? " ESCAPE '\\'" : "");
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strcasestr(newparam, "LIKE") && !ast_odbc_backslash_is_escape(obj) ? " ESCAPE '\\'" : "");
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while((newparam = va_arg(aq, const char *))) {
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op = !strchr(newparam, ' ') ? " =" : "";
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snprintf(sql + strlen(sql), sizeof(sql) - strlen(sql), " AND %s%s ?%s", newparam, op,
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strcasestr(newparam, "LIKE") ? " ESCAPE '\\'" : "");
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strcasestr(newparam, "LIKE") && !ast_odbc_backslash_is_escape(obj) ? " ESCAPE '\\'" : "");
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newval = va_arg(aq, const char *);
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}
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if (initfield)
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@ -60,6 +60,7 @@ struct odbc_class
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unsigned int limit:10; /* Gives a limit of 1023 maximum */
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unsigned int count:10; /* Running count of pooled connections */
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unsigned int delme:1; /* Purge the class */
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unsigned int backslash_is_escape:1; /* On this database, the backslash is a native escape sequence */
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AST_LIST_HEAD(, odbc_obj) odbc_obj;
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};
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@ -227,7 +228,7 @@ static int load_odbc_config(void)
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struct ast_variable *v;
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char *cat;
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const char *dsn, *username, *password, *sanitysql;
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int enabled, pooling, limit;
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int enabled, pooling, limit, bse;
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int connect = 0, res = 0;
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struct ast_flags config_flags = { 0 };
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@ -251,6 +252,7 @@ static int load_odbc_config(void)
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connect = 0;
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pooling = 0;
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limit = 0;
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bse = 1;
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for (v = ast_variable_browse(config, cat); v; v = v->next) {
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if (!strcasecmp(v->name, "pooling")) {
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if (ast_true(v->value))
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@ -277,6 +279,8 @@ static int load_odbc_config(void)
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password = v->value;
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} else if (!strcasecmp(v->name, "sanitysql")) {
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sanitysql = v->value;
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} else if (!strcasecmp(v->name, "backslash_is_escape")) {
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bse = ast_true(v->value);
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}
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}
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@ -318,6 +322,8 @@ static int load_odbc_config(void)
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}
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}
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new->backslash_is_escape = bse ? 1 : 0;
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odbc_register_class(new, connect);
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ast_log(LOG_NOTICE, "Registered ODBC class '%s' dsn->[%s]\n", cat, dsn);
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}
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@ -422,6 +428,11 @@ void ast_odbc_release_obj(struct odbc_obj *obj)
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obj->used = 0;
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}
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int ast_odbc_backslash_is_escape(struct odbc_obj *obj)
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{
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return obj->parent->backslash_is_escape;
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}
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struct odbc_obj *ast_odbc_request_obj(const char *name, int check)
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{
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struct odbc_obj *obj = NULL;
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@ -577,7 +588,7 @@ static int reload(void)
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struct ast_variable *v;
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char *cat;
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const char *dsn, *username, *password, *sanitysql;
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int enabled, pooling, limit;
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int enabled, pooling, limit, bse;
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int connect = 0, res = 0;
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struct ast_flags config_flags = { CONFIG_FLAG_FILEUNCHANGED };
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@ -605,6 +616,7 @@ static int reload(void)
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connect = 0;
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pooling = 0;
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limit = 0;
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bse = 1;
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for (v = ast_variable_browse(config, cat); v; v = v->next) {
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if (!strcasecmp(v->name, "pooling")) {
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pooling = 1;
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@ -630,6 +642,8 @@ static int reload(void)
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password = v->value;
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} else if (!strcasecmp(v->name, "sanitysql")) {
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sanitysql = v->value;
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} else if (!strcasecmp(v->name, "backslash_is_escape")) {
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bse = ast_true(v->value);
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}
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}
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@ -686,6 +700,8 @@ static int reload(void)
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}
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}
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new->backslash_is_escape = bse;
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if (class) {
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ast_log(LOG_NOTICE, "Refreshing ODBC class '%s' dsn->[%s]\n", cat, dsn);
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} else {
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