* ast_cli_complete * ast_complete_channels * ast_complete_applications These generators will now use ast_cli_completion_add if state == -1. Change-Id: I7ff311f0873099be0e43a3dc5415c0cd06d15756
518 lines
13 KiB
C
518 lines
13 KiB
C
/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 2016, CFWare, LLC
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*
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* Corey Farrell <git@cfware.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 Custom function management routines.
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*
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* \author Corey Farrell <git@cfware.com>
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*/
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/*** MODULEINFO
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<support_level>core</support_level>
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***/
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#include "asterisk.h"
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#include "asterisk/_private.h"
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#include "asterisk/cli.h"
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#include "asterisk/linkedlists.h"
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#include "asterisk/module.h"
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#include "asterisk/pbx.h"
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#include "asterisk/stasis_channels.h"
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#include "asterisk/strings.h"
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#include "asterisk/term.h"
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#include "asterisk/utils.h"
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#include "asterisk/xmldoc.h"
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#include "pbx_private.h"
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/*! \brief ast_app: A registered application */
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struct ast_app {
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int (*execute)(struct ast_channel *chan, const char *data);
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AST_DECLARE_STRING_FIELDS(
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AST_STRING_FIELD(synopsis); /*!< Synopsis text for 'show applications' */
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AST_STRING_FIELD(description); /*!< Description (help text) for 'show application <name>' */
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AST_STRING_FIELD(syntax); /*!< Syntax text for 'core show applications' */
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AST_STRING_FIELD(arguments); /*!< Arguments description */
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AST_STRING_FIELD(seealso); /*!< See also */
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);
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#ifdef AST_XML_DOCS
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enum ast_doc_src docsrc; /*!< Where the documentation come from. */
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#endif
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AST_RWLIST_ENTRY(ast_app) list; /*!< Next app in list */
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struct ast_module *module; /*!< Module this app belongs to */
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char name[0]; /*!< Name of the application */
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};
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/*!
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* \brief Registered applications container.
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*
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* It is sorted by application name.
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*/
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static AST_RWLIST_HEAD_STATIC(apps, ast_app);
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static struct ast_app *pbx_findapp_nolock(const char *name)
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{
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struct ast_app *cur;
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int cmp;
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AST_RWLIST_TRAVERSE(&apps, cur, list) {
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cmp = strcasecmp(name, cur->name);
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if (cmp > 0) {
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continue;
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}
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if (!cmp) {
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/* Found it. */
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break;
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}
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/* Not in container. */
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cur = NULL;
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break;
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}
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return cur;
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}
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struct ast_app *pbx_findapp(const char *app)
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{
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struct ast_app *ret;
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AST_RWLIST_RDLOCK(&apps);
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ret = pbx_findapp_nolock(app);
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AST_RWLIST_UNLOCK(&apps);
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return ret;
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}
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/*! \brief Dynamically register a new dial plan application */
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int ast_register_application2(const char *app, int (*execute)(struct ast_channel *, const char *), const char *synopsis, const char *description, void *mod)
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{
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struct ast_app *tmp;
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struct ast_app *cur;
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int length;
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#ifdef AST_XML_DOCS
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char *tmpxml;
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#endif
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AST_RWLIST_WRLOCK(&apps);
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cur = pbx_findapp_nolock(app);
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if (cur) {
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ast_log(LOG_WARNING, "Already have an application '%s'\n", app);
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AST_RWLIST_UNLOCK(&apps);
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return -1;
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}
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length = sizeof(*tmp) + strlen(app) + 1;
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if (!(tmp = ast_calloc(1, length))) {
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AST_RWLIST_UNLOCK(&apps);
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return -1;
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}
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if (ast_string_field_init(tmp, 128)) {
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AST_RWLIST_UNLOCK(&apps);
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ast_free(tmp);
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return -1;
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}
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strcpy(tmp->name, app);
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tmp->execute = execute;
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tmp->module = mod;
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#ifdef AST_XML_DOCS
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/* Try to lookup the docs in our XML documentation database */
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if (ast_strlen_zero(synopsis) && ast_strlen_zero(description)) {
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/* load synopsis */
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tmpxml = ast_xmldoc_build_synopsis("application", app, ast_module_name(tmp->module));
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ast_string_field_set(tmp, synopsis, tmpxml);
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ast_free(tmpxml);
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/* load description */
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tmpxml = ast_xmldoc_build_description("application", app, ast_module_name(tmp->module));
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ast_string_field_set(tmp, description, tmpxml);
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ast_free(tmpxml);
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/* load syntax */
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tmpxml = ast_xmldoc_build_syntax("application", app, ast_module_name(tmp->module));
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ast_string_field_set(tmp, syntax, tmpxml);
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ast_free(tmpxml);
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/* load arguments */
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tmpxml = ast_xmldoc_build_arguments("application", app, ast_module_name(tmp->module));
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ast_string_field_set(tmp, arguments, tmpxml);
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ast_free(tmpxml);
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/* load seealso */
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tmpxml = ast_xmldoc_build_seealso("application", app, ast_module_name(tmp->module));
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ast_string_field_set(tmp, seealso, tmpxml);
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ast_free(tmpxml);
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tmp->docsrc = AST_XML_DOC;
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} else {
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#endif
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ast_string_field_set(tmp, synopsis, synopsis);
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ast_string_field_set(tmp, description, description);
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#ifdef AST_XML_DOCS
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tmp->docsrc = AST_STATIC_DOC;
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}
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#endif
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/* Store in alphabetical order */
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AST_RWLIST_TRAVERSE_SAFE_BEGIN(&apps, cur, list) {
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if (strcasecmp(tmp->name, cur->name) < 0) {
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AST_RWLIST_INSERT_BEFORE_CURRENT(tmp, list);
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break;
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}
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}
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AST_RWLIST_TRAVERSE_SAFE_END;
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if (!cur)
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AST_RWLIST_INSERT_TAIL(&apps, tmp, list);
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ast_verb(2, "Registered application '" COLORIZE_FMT "'\n", COLORIZE(COLOR_BRCYAN, 0, tmp->name));
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AST_RWLIST_UNLOCK(&apps);
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return 0;
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}
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static void print_app_docs(struct ast_app *aa, int fd)
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{
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#ifdef AST_XML_DOCS
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char *synopsis = NULL, *description = NULL, *arguments = NULL, *seealso = NULL;
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if (aa->docsrc == AST_XML_DOC) {
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synopsis = ast_xmldoc_printable(S_OR(aa->synopsis, "Not available"), 1);
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description = ast_xmldoc_printable(S_OR(aa->description, "Not available"), 1);
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arguments = ast_xmldoc_printable(S_OR(aa->arguments, "Not available"), 1);
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seealso = ast_xmldoc_printable(S_OR(aa->seealso, "Not available"), 1);
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if (!synopsis || !description || !arguments || !seealso) {
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goto free_docs;
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}
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ast_cli(fd, "\n"
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"%s -= Info about application '%s' =- %s\n\n"
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COLORIZE_FMT "\n"
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"%s\n\n"
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COLORIZE_FMT "\n"
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"%s\n\n"
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COLORIZE_FMT "\n"
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"%s%s%s\n\n"
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COLORIZE_FMT "\n"
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"%s\n\n"
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COLORIZE_FMT "\n"
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"%s\n",
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ast_term_color(COLOR_MAGENTA, 0), aa->name, ast_term_reset(),
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COLORIZE(COLOR_MAGENTA, 0, "[Synopsis]"), synopsis,
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COLORIZE(COLOR_MAGENTA, 0, "[Description]"), description,
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COLORIZE(COLOR_MAGENTA, 0, "[Syntax]"),
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ast_term_color(COLOR_CYAN, 0), S_OR(aa->syntax, "Not available"), ast_term_reset(),
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COLORIZE(COLOR_MAGENTA, 0, "[Arguments]"), arguments,
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COLORIZE(COLOR_MAGENTA, 0, "[See Also]"), seealso);
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free_docs:
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ast_free(synopsis);
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ast_free(description);
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ast_free(arguments);
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ast_free(seealso);
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} else
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#endif
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{
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ast_cli(fd, "\n"
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"%s -= Info about application '%s' =- %s\n\n"
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COLORIZE_FMT "\n"
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COLORIZE_FMT "\n\n"
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COLORIZE_FMT "\n"
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COLORIZE_FMT "\n\n"
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COLORIZE_FMT "\n"
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COLORIZE_FMT "\n\n"
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COLORIZE_FMT "\n"
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COLORIZE_FMT "\n\n"
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COLORIZE_FMT "\n"
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COLORIZE_FMT "\n",
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ast_term_color(COLOR_MAGENTA, 0), aa->name, ast_term_reset(),
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COLORIZE(COLOR_MAGENTA, 0, "[Synopsis]"),
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COLORIZE(COLOR_CYAN, 0, S_OR(aa->synopsis, "Not available")),
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COLORIZE(COLOR_MAGENTA, 0, "[Description]"),
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COLORIZE(COLOR_CYAN, 0, S_OR(aa->description, "Not available")),
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COLORIZE(COLOR_MAGENTA, 0, "[Syntax]"),
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COLORIZE(COLOR_CYAN, 0, S_OR(aa->syntax, "Not available")),
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COLORIZE(COLOR_MAGENTA, 0, "[Arguments]"),
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COLORIZE(COLOR_CYAN, 0, S_OR(aa->arguments, "Not available")),
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COLORIZE(COLOR_MAGENTA, 0, "[See Also]"),
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COLORIZE(COLOR_CYAN, 0, S_OR(aa->seealso, "Not available")));
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}
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}
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/*
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* \brief 'show application' CLI command implementation function...
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*/
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static char *handle_show_application(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
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{
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struct ast_app *aa;
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int app, no_registered_app = 1;
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switch (cmd) {
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case CLI_INIT:
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e->command = "core show application";
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e->usage =
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"Usage: core show application <application> [<application> [<application> [...]]]\n"
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" Describes a particular application.\n";
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return NULL;
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case CLI_GENERATE:
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/*
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* There is a possibility to show informations about more than one
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* application at one time. You can type 'show application Dial Echo' and
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* you will see informations about these two applications ...
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*/
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return ast_complete_applications(a->line, a->word, -1);
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}
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if (a->argc < 4) {
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return CLI_SHOWUSAGE;
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}
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AST_RWLIST_RDLOCK(&apps);
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AST_RWLIST_TRAVERSE(&apps, aa, list) {
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/* Check for each app that was supplied as an argument */
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for (app = 3; app < a->argc; app++) {
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if (strcasecmp(aa->name, a->argv[app])) {
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continue;
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}
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/* We found it! */
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no_registered_app = 0;
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print_app_docs(aa, a->fd);
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}
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}
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AST_RWLIST_UNLOCK(&apps);
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/* we found at least one app? no? */
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if (no_registered_app) {
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ast_cli(a->fd, "Your application(s) is (are) not registered\n");
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return CLI_FAILURE;
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}
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return CLI_SUCCESS;
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}
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static char *handle_show_applications(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
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{
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struct ast_app *aa;
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int like = 0, describing = 0;
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int total_match = 0; /* Number of matches in like clause */
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int total_apps = 0; /* Number of apps registered */
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switch (cmd) {
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case CLI_INIT:
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e->command = "core show applications [like|describing]";
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e->usage =
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"Usage: core show applications [{like|describing} <text>]\n"
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" List applications which are currently available.\n"
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" If 'like', <text> will be a substring of the app name\n"
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" If 'describing', <text> will be a substring of the description\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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AST_RWLIST_RDLOCK(&apps);
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if (AST_RWLIST_EMPTY(&apps)) {
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ast_cli(a->fd, "There are no registered applications\n");
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AST_RWLIST_UNLOCK(&apps);
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return CLI_SUCCESS;
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}
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/* core list applications like <keyword> */
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if ((a->argc == 5) && (!strcmp(a->argv[3], "like"))) {
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like = 1;
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} else if ((a->argc > 4) && (!strcmp(a->argv[3], "describing"))) {
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describing = 1;
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}
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/* core list applications describing <keyword1> [<keyword2>] [...] */
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if ((!like) && (!describing)) {
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ast_cli(a->fd, " -= Registered Asterisk Applications =-\n");
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} else {
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ast_cli(a->fd, " -= Matching Asterisk Applications =-\n");
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}
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AST_RWLIST_TRAVERSE(&apps, aa, list) {
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int printapp = 0;
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total_apps++;
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if (like) {
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if (strcasestr(aa->name, a->argv[4])) {
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printapp = 1;
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total_match++;
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}
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} else if (describing) {
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if (aa->description) {
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/* Match all words on command line */
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int i;
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printapp = 1;
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for (i = 4; i < a->argc; i++) {
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if (!strcasestr(aa->description, a->argv[i])) {
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printapp = 0;
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} else {
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total_match++;
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}
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}
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}
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} else {
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printapp = 1;
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}
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if (printapp) {
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ast_cli(a->fd," %20s: %s\n", aa->name, aa->synopsis ? aa->synopsis : "<Synopsis not available>");
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}
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}
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if ((!like) && (!describing)) {
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ast_cli(a->fd, " -= %d Applications Registered =-\n",total_apps);
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} else {
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ast_cli(a->fd, " -= %d Applications Matching =-\n",total_match);
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}
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AST_RWLIST_UNLOCK(&apps);
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return CLI_SUCCESS;
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}
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int ast_unregister_application(const char *app)
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{
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struct ast_app *cur;
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int cmp;
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/* Anticipate need for conlock in unreference_cached_app(), in order to avoid
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* possible deadlock with pbx_extension_helper()/pbx_findapp()
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*/
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ast_rdlock_contexts();
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AST_RWLIST_WRLOCK(&apps);
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AST_RWLIST_TRAVERSE_SAFE_BEGIN(&apps, cur, list) {
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cmp = strcasecmp(app, cur->name);
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if (cmp > 0) {
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continue;
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}
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if (!cmp) {
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/* Found it. */
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unreference_cached_app(cur);
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AST_RWLIST_REMOVE_CURRENT(list);
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ast_verb(2, "Unregistered application '%s'\n", cur->name);
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ast_string_field_free_memory(cur);
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ast_free(cur);
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break;
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}
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/* Not in container. */
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cur = NULL;
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break;
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}
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AST_RWLIST_TRAVERSE_SAFE_END;
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AST_RWLIST_UNLOCK(&apps);
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ast_unlock_contexts();
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return cur ? 0 : -1;
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}
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char *ast_complete_applications(const char *line, const char *word, int state)
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{
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struct ast_app *app;
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int which = 0;
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int cmp;
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char *ret = NULL;
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size_t wordlen = strlen(word);
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AST_RWLIST_RDLOCK(&apps);
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AST_RWLIST_TRAVERSE(&apps, app, list) {
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cmp = strncasecmp(word, app->name, wordlen);
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if (cmp < 0) {
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/* No more matches. */
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break;
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} else if (!cmp) {
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/* Found match. */
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if (state != -1) {
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if (++which <= state) {
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/* Not enough matches. */
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continue;
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}
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ret = ast_strdup(app->name);
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break;
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}
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if (ast_cli_completion_add(ast_strdup(app->name))) {
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break;
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}
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}
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}
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AST_RWLIST_UNLOCK(&apps);
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return ret;
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}
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const char *app_name(struct ast_app *app)
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{
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return app->name;
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}
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/*
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\note This function is special. It saves the stack so that no matter
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how many times it is called, it returns to the same place */
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int pbx_exec(struct ast_channel *c, /*!< Channel */
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struct ast_app *app, /*!< Application */
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const char *data) /*!< Data for execution */
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{
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int res;
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struct ast_module_user *u = NULL;
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const char *saved_c_appl;
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const char *saved_c_data;
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/* save channel values */
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saved_c_appl= ast_channel_appl(c);
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saved_c_data= ast_channel_data(c);
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ast_channel_lock(c);
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ast_channel_appl_set(c, app->name);
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ast_channel_data_set(c, data);
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ast_channel_publish_snapshot(c);
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ast_channel_unlock(c);
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if (app->module)
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u = __ast_module_user_add(app->module, c);
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res = app->execute(c, S_OR(data, ""));
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if (app->module && u)
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__ast_module_user_remove(app->module, u);
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/* restore channel values */
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ast_channel_appl_set(c, saved_c_appl);
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ast_channel_data_set(c, saved_c_data);
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return res;
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}
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static struct ast_cli_entry app_cli[] = {
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AST_CLI_DEFINE(handle_show_applications, "Shows registered dialplan applications"),
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AST_CLI_DEFINE(handle_show_application, "Describe a specific dialplan application"),
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|
};
|
|
|
|
static void unload_pbx_app(void)
|
|
{
|
|
ast_cli_unregister_multiple(app_cli, ARRAY_LEN(app_cli));
|
|
}
|
|
|
|
int load_pbx_app(void)
|
|
{
|
|
ast_cli_register_multiple(app_cli, ARRAY_LEN(app_cli));
|
|
ast_register_cleanup(unload_pbx_app);
|
|
|
|
return 0;
|
|
}
|