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  •  * Asterisk -- An open source telephony toolkit.
    
     * Copyright (C) 1999 - 2005, Digium, Inc.
     *
     * 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.
     */
    
    
     * \brief Channel group related dialplan functions
    
     */
    
    #include <stdlib.h>
    #include <string.h>
    #include <sys/types.h>
    
    
    Kevin P. Fleming's avatar
    Kevin P. Fleming committed
    #include "asterisk.h"
    
    /* ASTERISK_FILE_VERSION(__FILE__, "$Revision$") */
    
    
    #include "asterisk/channel.h"
    #include "asterisk/pbx.h"
    #include "asterisk/logger.h"
    #include "asterisk/utils.h"
    #include "asterisk/app.h"
    
    static char *group_count_function_read(struct ast_channel *chan, char *cmd, char *data, char *buf, size_t len) 
    {
    	int count;
    	char group[80] = "";
    	char category[80] = "";
    	char *grp;
    
    	ast_app_group_split_group(data, group, sizeof(group), category, sizeof(category));
    
    	if (ast_strlen_zero(group)) {
    
    		if ((grp = pbx_builtin_getvar_helper(chan, category)))
    			ast_copy_string(group, grp, sizeof(group));
    		else
    
    			ast_log(LOG_NOTICE, "No group could be found for channel '%s'\n", chan->name);	
    
    	}
    
    	count = ast_app_group_get_count(group, category);
    	snprintf(buf, len, "%d", count);
    
    	return buf;
    }
    
    #ifndef BUILTIN_FUNC
    static
    #endif
    struct ast_custom_function group_count_function = {
    	.name = "GROUP_COUNT",
    	.syntax = "GROUP_COUNT([groupname][@category])",
    	.synopsis = "Counts the number of channels in the specified group",
    	.desc = "Calculates the group count for the specified group, or uses the\n"
    	"channel's current group if not specifed (and non-empty).\n",
    	.read = group_count_function_read,
    };
    
    static char *group_match_count_function_read(struct ast_channel *chan, char *cmd, char *data, char *buf, size_t len) 
    {
    	int count;
    	char group[80] = "";
    	char category[80] = "";
    
    	ast_app_group_split_group(data, group, sizeof(group), category, sizeof(category));
    
    	if (!ast_strlen_zero(group)) {
    		count = ast_app_group_match_get_count(group, category);
    		snprintf(buf, len, "%d", count);
    	}
    
    	return buf;
    }
    
    #ifndef BUILTIN_FUNC
    static
    #endif
    struct ast_custom_function group_match_count_function = {
    	.name = "GROUP_MATCH_COUNT",
    	.syntax = "GROUP_MATCH_COUNT(groupmatch[@category])",
    	.synopsis = "Counts the number of channels in the groups matching the specified pattern",
    	.desc = "Calculates the group count for all groups that match the specified pattern.\n"
    	"Uses standard regular expression matching (see regex(7)).\n",
    	.read = group_match_count_function_read,
    	.write = NULL,
    };
    
    
    static char *group_function_read(struct ast_channel *chan, char *cmd, char *data, char *buf, size_t len)
    {
    	char varname[256];
    	char *group;
    
    	if (data && !ast_strlen_zero(data)) {
    		snprintf(varname, sizeof(varname), "%s_%s", GROUP_CATEGORY_PREFIX, data);
    	} else {
    		ast_copy_string(varname, GROUP_CATEGORY_PREFIX, sizeof(varname));
    	}
    
    	group = pbx_builtin_getvar_helper(chan, varname);
    	if (group)
    		ast_copy_string(buf, group, len);
    
    	return buf;
    }
    
    static void group_function_write(struct ast_channel *chan, char *cmd, char *data, const char *value)
    {
    	char grpcat[256];
    
    	if (data && !ast_strlen_zero(data)) {
    
    		snprintf(grpcat, sizeof(grpcat), "%s@%s", value, data);
    
    	} else {
    		ast_copy_string(grpcat, value, sizeof(grpcat));
    	}
    
            if (ast_app_group_set_channel(chan, grpcat))
                    ast_log(LOG_WARNING, "Setting a group requires an argument (group name)\n");
    }
    
    #ifndef BUILTIN_FUNC
    static
    #endif
    struct ast_custom_function group_function = {
    	.name = "GROUP",
    	.syntax = "GROUP([category])",
    	.synopsis = "Gets or sets the channel group.",
    	.desc = "Gets or sets the channel group.\n",
    	.read = group_function_read,
    	.write = group_function_write,
    };
    
    static char *group_list_function_read(struct ast_channel *chan, char *cmd, char *data, char *buf, size_t len)
    {
    	struct ast_var_t *current;
    	struct varshead *headp;
    	char tmp1[1024] = "";
    	char tmp2[1024] = "";
    
    	headp=&chan->varshead;
    	AST_LIST_TRAVERSE(headp,current,entries) {
    		if (!strncmp(ast_var_name(current), GROUP_CATEGORY_PREFIX "_", strlen(GROUP_CATEGORY_PREFIX) + 1)) {
    			if (!ast_strlen_zero(tmp1)) {
    				ast_copy_string(tmp2, tmp1, sizeof(tmp2));
    				snprintf(tmp1, sizeof(tmp1), "%s %s@%s", tmp2, ast_var_value(current), (ast_var_name(current) + strlen(GROUP_CATEGORY_PREFIX) + 1));
    			} else {
    				snprintf(tmp1, sizeof(tmp1), "%s@%s", ast_var_value(current), (ast_var_name(current) + strlen(GROUP_CATEGORY_PREFIX) + 1));
    			}
    		} else if (!strcmp(ast_var_name(current), GROUP_CATEGORY_PREFIX)) {
    			if (!ast_strlen_zero(tmp1)) {
    				ast_copy_string(tmp2, tmp1, sizeof(tmp2));
    				snprintf(tmp1, sizeof(tmp1), "%s %s", tmp2, ast_var_value(current));
    			} else {
    				snprintf(tmp1, sizeof(tmp1), "%s", ast_var_value(current));
    			}
    		}
    	}
    	ast_copy_string(buf, tmp1, len);
    	return buf;
    }
    
    #ifndef BUILTIN_FUNC
    static
    #endif
    struct ast_custom_function group_list_function = {
    	.name = "GROUP_LIST",
    	.syntax = "GROUP_LIST()",
    	.synopsis = "Gets a list of the groups set on a channel.",
    	.desc = "Gets a list of the groups set on a channel.\n",
    	.read = group_list_function_read,
    	.write = NULL,
    };
    
    
    /*
    Local Variables:
    mode: C
    c-file-style: "linux"
    indent-tabs-mode: nil
    End:
    */