root/modules.c @ 8c98de67
| dafae8e7 | Hamish Coleman | /*
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*
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*
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*
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*/
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#include <sys/time.h>
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#include <string.h>
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#include <stdlib.h>
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#include "libcli/libcli.h"
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#include "module.h"
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/* head of the list of all modules */
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static struct module_def *module_list;
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/* register a new module - used by all other modules */
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int register_module(struct module_def *module) {
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/* FIXME - not thread safe */
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module->next = module_list;
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module_list = module;
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return 0;
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}
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/*
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* Because I want a flexible, modular architecture,
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* I want to be able to register child commands from
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* wildly different locations, thus I need some way
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* to use the same parents.
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*
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* The 'best' way would be auto-vivification, but libcli
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* is not constructed to allow that. A better way would
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* be for libcli to have a command lookup function.
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* It is also possible to just register the parent every
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* time it is needed, but that clutters up the libcli
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* namespace with duplicates
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*
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* for the moment, I am just going to create a list and
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* some accessor functions.
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*
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*/
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/* TODO - implement cli_command_lookup */
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struct parent_def {
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struct parent_def *next;
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char *name;
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struct cli_command *cmd;
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};
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static struct parent_def *parent_list;
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struct cli_command *lookup_parent(char *name) {
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struct parent_def *p = parent_list;
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while(p) {
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if (!strcmp(name,p->name)) {
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return p->cmd;
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}
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p=p->next;
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}
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return NULL;
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}
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int register_parent(char *name, struct cli_command *cmd) {
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if (lookup_parent(name)) {
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return -1;
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}
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struct parent_def *p = malloc(sizeof(struct parent_def));
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if (!p) {
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return -1;
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}
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p->name=name;
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p->cmd=cmd;
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/* FIXME - not thread safe */
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p->next = parent_list;
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parent_list = p;
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return 0;
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}
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/* command used for showing all modules config */
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static int cmd_showrun(struct cli_def *cli, char *command, char *argv[], int argc) {
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cli_print(cli,"!");
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cli_print(cli,"! show run");
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cli_print(cli,"!");
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struct module_def *p = module_list;
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while (p) {
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cli_print(cli,"! module: %s",p->name);
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if(p->showrun) {
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p->showrun(cli);
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}
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cli_print(cli,"!");
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p=p->next;
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}
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return CLI_OK;
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}
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/* command used for showing the loaded modules list */
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static int cmd_showmodules(struct cli_def *cli, char *command, char *argv[], int argc) {
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cli_print(cli, "Module list:");
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struct module_def *p = module_list;
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while (p) {
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cli_print(cli,"\t%s\t%s",p->name,p->desc);
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p=p->next;
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}
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return CLI_OK;
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}
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/* dump the parents table for debugging */
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static int cmd_debugparents(struct cli_def *cli, char *command, char *argv[], int argc) {
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cli_print(cli, "registered parents list:");
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struct parent_def *p = parent_list;
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while (p) {
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cli_print(cli,"\t%s\t%p",p->name,p->cmd);
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p=p->next;
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}
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return CLI_OK;
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}
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/* show the config for this module */
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static int this_showrun(struct cli_def *cli) {
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cli_print(cli, "!");
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return CLI_OK;
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}
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/* Our local module definition */
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static struct module_def this_module = {
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.name = "modules",
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.desc = "Module handling library",
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.showrun = this_showrun,
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};
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/* initialise and register this module */
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int modules_init(struct cli_def *cli) {
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/* create the well known parent prefixes */
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register_parent("show",
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cli_register_command(cli, NULL, "show", NULL, PRIVILEGE_UNPRIVILEGED,
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MODE_EXEC, "Show information about system"));
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register_parent("debug",
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cli_register_command(cli, NULL, "debug", NULL, PRIVILEGE_PRIVILEGED,
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MODE_EXEC, "Commands used for debugging"));
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/* register the commands from this module */
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cli_register_command(cli, lookup_parent("show"), "running-config", cmd_showrun,
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PRIVILEGE_PRIVILEGED, MODE_EXEC, "Current configuration");
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cli_register_command(cli, lookup_parent("show"), "modules", cmd_showmodules,
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PRIVILEGE_UNPRIVILEGED, MODE_EXEC, "Registered modules");
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cli_register_command(cli, lookup_parent("debug"), "parents", cmd_debugparents,
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PRIVILEGE_PRIVILEGED, MODE_EXEC, "Internal parent cmd list");
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register_module(&this_module);
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return 0;
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}
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