This patch adds 'const' tags to a number of Asterisk APIs where they are appropriate (where the API already demanded that the function argument not be modified, but the compiler was not informed of that fact). The list includes: - CLI command handlers - CLI command handler arguments - AGI command handlers - AGI command handler arguments - Dialplan application handler arguments - Speech engine API function arguments In addition, various file-scope and function-scope constant arrays got 'const' and/or 'static' qualifiers where they were missing. Review: https://reviewboard.asterisk.org/r/251/ git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@196072 65c4cc65-6c06-0410-ace0-fbb531ad65f3
326 lines
8.3 KiB
C
326 lines
8.3 KiB
C
/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 2006, Digium, Inc.
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*
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* Steve Murphy <murf@parsetree.com>
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*
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* See http://www.asterisk.org for more information about
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* the Asterisk project. Please do not directly contact
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* any of the maintainers of this project for assistance;
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* the project provides a web site, mailing lists and IRC
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* channels for your use.
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*
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* This program is free software, distributed under the terms of
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* the GNU General Public License Version 2. See the LICENSE file
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* at the top of the source tree.
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*/
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/*! \file
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*
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* \brief Compile symbolic Asterisk Extension Logic into Asterisk extensions, version 2.
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*
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*/
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/*** MODULEINFO
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<depend>res_ael_share</depend>
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***/
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#include "asterisk.h"
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#if !defined(STANDALONE)
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ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
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#endif
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#include <ctype.h>
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#include <regex.h>
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#include <sys/stat.h>
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#ifdef STANDALONE
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#ifdef HAVE_MTX_PROFILE
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static int mtx_prof = -1; /* helps the standalone compile with the mtx_prof flag on */
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#endif
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#endif
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#include "asterisk/pbx.h"
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#include "asterisk/config.h"
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#include "asterisk/module.h"
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#include "asterisk/logger.h"
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#include "asterisk/cli.h"
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#include "asterisk/app.h"
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#include "asterisk/callerid.h"
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#include "asterisk/hashtab.h"
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#include "asterisk/ael_structs.h"
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#include "asterisk/pval.h"
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#ifdef AAL_ARGCHECK
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#include "asterisk/argdesc.h"
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#endif
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/* these functions are in ../ast_expr2.fl */
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#define DEBUG_READ (1 << 0)
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#define DEBUG_TOKENS (1 << 1)
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#define DEBUG_MACROS (1 << 2)
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#define DEBUG_CONTEXTS (1 << 3)
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static char *config = "extensions.ael";
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static char *registrar = "pbx_ael";
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static int pbx_load_module(void);
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#ifndef AAL_ARGCHECK
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/* for the time being, short circuit all the AAL related structures
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without permanently removing the code; after/during the AAL
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development, this code can be properly re-instated
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*/
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#endif
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#ifdef AAL_ARGCHECK
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int option_matches_j( struct argdesc *should, pval *is, struct argapp *app);
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int option_matches( struct argdesc *should, pval *is, struct argapp *app);
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int ael_is_funcname(char *name);
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#endif
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int check_app_args(pval *appcall, pval *arglist, struct argapp *app);
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void check_pval(pval *item, struct argapp *apps, int in_globals);
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void check_pval_item(pval *item, struct argapp *apps, int in_globals);
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void check_switch_expr(pval *item, struct argapp *apps);
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void ast_expr_register_extra_error_info(char *errmsg);
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void ast_expr_clear_extra_error_info(void);
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struct pval *find_macro(char *name);
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struct pval *find_context(char *name);
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struct pval *find_context(char *name);
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struct pval *find_macro(char *name);
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struct ael_priority *new_prio(void);
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struct ael_extension *new_exten(void);
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void destroy_extensions(struct ael_extension *exten);
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void set_priorities(struct ael_extension *exten);
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void add_extensions(struct ael_extension *exten);
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void ast_compile_ael2(struct ast_context **local_contexts, struct ast_hashtab *local_table, struct pval *root);
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void destroy_pval(pval *item);
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void destroy_pval_item(pval *item);
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int is_float(char *arg );
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int is_int(char *arg );
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int is_empty(char *arg);
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/* static void substitute_commas(char *str); */
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static int aeldebug = 0;
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/* interface stuff */
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/* if all the below are static, who cares if they are present? */
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static int pbx_load_module(void)
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{
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int errs=0, sem_err=0, sem_warn=0, sem_note=0;
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char *rfilename;
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struct ast_context *local_contexts=NULL, *con;
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struct ast_hashtab *local_table=NULL;
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struct pval *parse_tree;
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ast_log(LOG_NOTICE, "Starting AEL load process.\n");
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if (config[0] == '/')
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rfilename = (char *)config;
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else {
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rfilename = alloca(strlen(config) + strlen(ast_config_AST_CONFIG_DIR) + 2);
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sprintf(rfilename, "%s/%s", ast_config_AST_CONFIG_DIR, config);
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}
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if (access(rfilename,R_OK) != 0) {
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ast_log(LOG_NOTICE, "File %s not found; AEL declining load\n", rfilename);
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return AST_MODULE_LOAD_DECLINE;
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}
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parse_tree = ael2_parse(rfilename, &errs);
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ast_log(LOG_NOTICE, "AEL load process: parsed config file name '%s'.\n", rfilename);
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ael2_semantic_check(parse_tree, &sem_err, &sem_warn, &sem_note);
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if (errs == 0 && sem_err == 0) {
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ast_log(LOG_NOTICE, "AEL load process: checked config file name '%s'.\n", rfilename);
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local_table = ast_hashtab_create(11, ast_hashtab_compare_contexts, ast_hashtab_resize_java, ast_hashtab_newsize_java, ast_hashtab_hash_contexts, 0);
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ast_compile_ael2(&local_contexts, local_table, parse_tree);
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ast_log(LOG_NOTICE, "AEL load process: compiled config file name '%s'.\n", rfilename);
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ast_merge_contexts_and_delete(&local_contexts, local_table, registrar);
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local_table = NULL; /* it's the dialplan global now */
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local_contexts = NULL;
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ast_log(LOG_NOTICE, "AEL load process: merged config file name '%s'.\n", rfilename);
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for (con = ast_walk_contexts(NULL); con; con = ast_walk_contexts(con))
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ast_context_verify_includes(con);
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ast_log(LOG_NOTICE, "AEL load process: verified config file name '%s'.\n", rfilename);
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} else {
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ast_log(LOG_ERROR, "Sorry, but %d syntax errors and %d semantic errors were detected. It doesn't make sense to compile.\n", errs, sem_err);
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destroy_pval(parse_tree); /* free up the memory */
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return AST_MODULE_LOAD_DECLINE;
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}
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destroy_pval(parse_tree); /* free up the memory */
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return AST_MODULE_LOAD_SUCCESS;
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}
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/* CLI interface */
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static char *handle_cli_ael_set_debug(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
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{
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switch (cmd) {
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case CLI_INIT:
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e->command = "ael set debug {read|tokens|macros|contexts|off}";
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e->usage =
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"Usage: ael set debug {read|tokens|macros|contexts|off}\n"
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" Enable AEL read, token, macro, or context debugging,\n"
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" or disable all AEL debugging messages. Note: this\n"
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" currently does nothing.\n";
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return NULL;
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case CLI_GENERATE:
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return NULL;
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}
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if (a->argc != e->args)
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return CLI_SHOWUSAGE;
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if (!strcasecmp(a->argv[3], "read"))
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aeldebug |= DEBUG_READ;
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else if (!strcasecmp(a->argv[3], "tokens"))
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aeldebug |= DEBUG_TOKENS;
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else if (!strcasecmp(a->argv[3], "macros"))
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aeldebug |= DEBUG_MACROS;
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else if (!strcasecmp(a->argv[3], "contexts"))
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aeldebug |= DEBUG_CONTEXTS;
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else if (!strcasecmp(a->argv[3], "off"))
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aeldebug = 0;
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else
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return CLI_SHOWUSAGE;
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return CLI_SUCCESS;
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}
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static char *handle_cli_ael_reload(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
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{
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switch (cmd) {
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case CLI_INIT:
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e->command = "ael reload";
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e->usage =
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"Usage: ael reload\n"
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" Reloads AEL configuration.\n";
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return NULL;
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case CLI_GENERATE:
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return NULL;
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}
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if (a->argc != 2)
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return CLI_SHOWUSAGE;
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return (pbx_load_module() ? CLI_FAILURE : CLI_SUCCESS);
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}
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static struct ast_cli_entry cli_ael[] = {
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AST_CLI_DEFINE(handle_cli_ael_reload, "Reload AEL configuration"),
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AST_CLI_DEFINE(handle_cli_ael_set_debug, "Enable AEL debugging flags")
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};
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static int unload_module(void)
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{
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ast_context_destroy(NULL, registrar);
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ast_cli_unregister_multiple(cli_ael, ARRAY_LEN(cli_ael));
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return 0;
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}
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static int load_module(void)
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{
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ast_cli_register_multiple(cli_ael, ARRAY_LEN(cli_ael));
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return (pbx_load_module());
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}
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static int reload(void)
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{
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return pbx_load_module();
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}
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#ifdef STANDALONE
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#define AST_MODULE "ael"
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int ael_external_load_module(void);
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int ael_external_load_module(void)
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{
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pbx_load_module();
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return 1;
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}
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#endif
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AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_DEFAULT, "Asterisk Extension Language Compiler",
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.load = load_module,
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.unload = unload_module,
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.reload = reload,
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);
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#ifdef AAL_ARGCHECK
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static const char * const ael_funclist[] =
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{
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"AGENT",
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"ARRAY",
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"BASE64_DECODE",
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"BASE64_ENCODE",
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"CALLERID",
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"CDR",
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"CHANNEL",
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"CHECKSIPDOMAIN",
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"CHECK_MD5",
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"CURL",
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"CUT",
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"DB",
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"DB_EXISTS",
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"DUNDILOOKUP",
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"ENUMLOOKUP",
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"ENV",
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"EVAL",
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"EXISTS",
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"FIELDQTY",
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"FILTER",
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"GROUP",
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"GROUP_COUNT",
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"GROUP_LIST",
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"GROUP_MATCH_COUNT",
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"IAXPEER",
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"IF",
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"IFTIME",
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"ISNULL",
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"KEYPADHASH",
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"LANGUAGE",
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"LEN",
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"MATH",
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"MD5",
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"MUSICCLASS",
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"QUEUEAGENTCOUNT",
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"QUEUE_MEMBER_COUNT",
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"QUEUE_MEMBER_LIST",
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"QUOTE",
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"RAND",
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"REGEX",
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"SET",
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"SHA1",
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"SIPCHANINFO",
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"SIPPEER",
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"SIP_HEADER",
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"SORT",
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"STAT",
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"STRFTIME",
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"STRPTIME",
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"TIMEOUT",
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"TXTCIDNAME",
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"URIDECODE",
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"URIENCODE",
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"VMCOUNT"
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};
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int ael_is_funcname(char *name)
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{
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int s,t;
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t = sizeof(ael_funclist)/sizeof(char*);
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s = 0;
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while ((s < t) && strcasecmp(name, ael_funclist[s]))
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s++;
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if ( s < t )
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return 1;
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else
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return 0;
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}
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#endif
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