examples/cmdline/commands.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
   5  *   All rights reserved.
   6  *
   7  *   Redistribution and use in source and binary forms, with or without
   8  *   modification, are permitted provided that the following conditions
   9  *   are met:
  10  *
  11  *     * Redistributions of source code must retain the above copyright
  12  *       notice, this list of conditions and the following disclaimer.
  13  *     * Redistributions in binary form must reproduce the above copyright
  14  *       notice, this list of conditions and the following disclaimer in
  15  *       the documentation and/or other materials provided with the
  16  *       distribution.
  17  *     * Neither the name of Intel Corporation nor the names of its
  18  *       contributors may be used to endorse or promote products derived
  19  *       from this software without specific prior written permission.
  20  *
  21  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  24  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  25  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  26  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  27  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  28  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  29  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  31  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34 /*
  35  * Copyright (c) 2009, Olivier MATZ <zer0@droids-corp.org>
  36  * All rights reserved.
  37  * Redistribution and use in source and binary forms, with or without
  38  * modification, are permitted provided that the following conditions are met:
  39  *
  40  *     * Redistributions of source code must retain the above copyright
  41  *       notice, this list of conditions and the following disclaimer.
  42  *     * Redistributions in binary form must reproduce the above copyright
  43  *       notice, this list of conditions and the following disclaimer in the
  44  *       documentation and/or other materials provided with the distribution.
  45  *     * Neither the name of the University of California, Berkeley nor the
  46  *       names of its contributors may be used to endorse or promote products
  47  *       derived from this software without specific prior written permission.
  48  *
  49  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND ANY
  50  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  51  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  52  * DISCLAIMED. IN NO EVENT SHALL THE REGENTS AND CONTRIBUTORS BE LIABLE FOR ANY
  53  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  54  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  55  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  56  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  57  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  58  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  59  */
  60
  61 #include <stdio.h>
  62 #include <stdint.h>
  63 #include <string.h>
  64 #include <stdlib.h>
  65 #include <stdarg.h>
  66 #include <errno.h>
  67 #include <netinet/in.h>
  68 #include <termios.h>
  69 #ifndef __linux__
  70         #ifdef __FreeBSD__
  71                 #include <sys/socket.h>
  72         #else
  73                 #include <net/socket.h>
  74         #endif
  75 #endif
  76
  77 #include <cmdline_rdline.h>
  78 #include <cmdline_parse.h>
  79 #include <cmdline_parse_ipaddr.h>
  80 #include <cmdline_parse_num.h>
  81 #include <cmdline_parse_string.h>
  82 #include <cmdline.h>
  83
  84 #include <rte_string_fns.h>
  85
  86 #include "parse_obj_list.h"
  87
  88 struct object_list global_obj_list;
  89
  90 /* not defined under linux */
  91 #ifndef NIPQUAD
  92 #define NIPQUAD_FMT "%u.%u.%u.%u"
  93 #define NIPQUAD(addr)                           \
  94         (unsigned)((unsigned char *)&addr)[0],  \
  95         (unsigned)((unsigned char *)&addr)[1],  \
  96         (unsigned)((unsigned char *)&addr)[2],  \
  97         (unsigned)((unsigned char *)&addr)[3]
  98 #endif
  99
 100 #ifndef NIP6
 101 #define NIP6_FMT "%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x"
 102 #define NIP6(addr)                                      \
 103         (unsigned)((addr).s6_addr[0]),                  \
 104         (unsigned)((addr).s6_addr[1]),                  \
 105         (unsigned)((addr).s6_addr[2]),                  \
 106         (unsigned)((addr).s6_addr[3]),                  \
 107         (unsigned)((addr).s6_addr[4]),                  \
 108         (unsigned)((addr).s6_addr[5]),                  \
 109         (unsigned)((addr).s6_addr[6]),                  \
 110         (unsigned)((addr).s6_addr[7]),                  \
 111         (unsigned)((addr).s6_addr[8]),                  \
 112         (unsigned)((addr).s6_addr[9]),                  \
 113         (unsigned)((addr).s6_addr[10]),                 \
 114         (unsigned)((addr).s6_addr[11]),                 \
 115         (unsigned)((addr).s6_addr[12]),                 \
 116         (unsigned)((addr).s6_addr[13]),                 \
 117         (unsigned)((addr).s6_addr[14]),                 \
 118         (unsigned)((addr).s6_addr[15])
 119 #endif
 120
 121
 122 /**********************************************************/
 123
 124 struct cmd_obj_del_show_result {
 125         cmdline_fixed_string_t action;
 126         struct object *obj;
 127 };
 128
 129 static void cmd_obj_del_show_parsed(void *parsed_result,
 130                                     struct cmdline *cl,
 131                                     __attribute__((unused)) void *data)
 132 {
 133         struct cmd_obj_del_show_result *res = parsed_result;
 134         char ip_str[INET6_ADDRSTRLEN];
 135
 136         if (res->obj->ip.family == AF_INET)
 137                 snprintf(ip_str, sizeof(ip_str), NIPQUAD_FMT,
 138                          NIPQUAD(res->obj->ip.addr.ipv4));
 139         else
 140                 snprintf(ip_str, sizeof(ip_str), NIP6_FMT,
 141                          NIP6(res->obj->ip.addr.ipv6));
 142
 143         if (strcmp(res->action, "del") == 0) {
 144                 SLIST_REMOVE(&global_obj_list, res->obj, object, next);
 145                 cmdline_printf(cl, "Object %s removed, ip=%s\n",
 146                                res->obj->name, ip_str);
 147                 free(res->obj);
 148         }
 149         else if (strcmp(res->action, "show") == 0) {
 150                 cmdline_printf(cl, "Object %s, ip=%s\n",
 151                                res->obj->name, ip_str);
 152         }
 153 }
 154
 155 cmdline_parse_token_string_t cmd_obj_action =
 156         TOKEN_STRING_INITIALIZER(struct cmd_obj_del_show_result,
 157                                  action, "show#del");
 158 parse_token_obj_list_t cmd_obj_obj =
 159         TOKEN_OBJ_LIST_INITIALIZER(struct cmd_obj_del_show_result, obj,
 160                                    &global_obj_list);
 161
 162 cmdline_parse_inst_t cmd_obj_del_show = {
 163         .f = cmd_obj_del_show_parsed,  /* function to call */
 164         .data = NULL,      /* 2nd arg of func */
 165         .help_str = "Show/del an object",
 166         .tokens = {        /* token list, NULL terminated */
 167                 (void *)&cmd_obj_action,
 168                 (void *)&cmd_obj_obj,
 169                 NULL,
 170         },
 171 };
 172
 173 /**********************************************************/
 174
 175 struct cmd_obj_add_result {
 176         cmdline_fixed_string_t action;
 177         cmdline_fixed_string_t name;
 178         cmdline_ipaddr_t ip;
 179 };
 180
 181 static void cmd_obj_add_parsed(void *parsed_result,
 182                                struct cmdline *cl,
 183                                __attribute__((unused)) void *data)
 184 {
 185         struct cmd_obj_add_result *res = parsed_result;
 186         struct object *o;
 187         char ip_str[INET6_ADDRSTRLEN];
 188
 189         SLIST_FOREACH(o, &global_obj_list, next) {
 190                 if (!strcmp(res->name, o->name)) {
 191                         cmdline_printf(cl, "Object %s already exist\n", res->name);
 192                         return;
 193                 }
 194                 break;
 195         }
 196
 197         o = malloc(sizeof(*o));
 198         if (!o) {
 199                 cmdline_printf(cl, "mem error\n");
 200                 return;
 201         }
 202         snprintf(o->name, sizeof(o->name), "%s", res->name);
 203         o->ip = res->ip;
 204         SLIST_INSERT_HEAD(&global_obj_list, o, next);
 205
 206         if (o->ip.family == AF_INET)
 207                 snprintf(ip_str, sizeof(ip_str), NIPQUAD_FMT,
 208                          NIPQUAD(o->ip.addr.ipv4));
 209         else
 210                 snprintf(ip_str, sizeof(ip_str), NIP6_FMT,
 211                          NIP6(o->ip.addr.ipv6));
 212
 213         cmdline_printf(cl, "Object %s added, ip=%s\n",
 214                        o->name, ip_str);
 215 }
 216
 217 cmdline_parse_token_string_t cmd_obj_action_add =
 218         TOKEN_STRING_INITIALIZER(struct cmd_obj_add_result, action, "add");
 219 cmdline_parse_token_string_t cmd_obj_name =
 220         TOKEN_STRING_INITIALIZER(struct cmd_obj_add_result, name, NULL);
 221 cmdline_parse_token_ipaddr_t cmd_obj_ip =
 222         TOKEN_IPADDR_INITIALIZER(struct cmd_obj_add_result, ip);
 223
 224 cmdline_parse_inst_t cmd_obj_add = {
 225         .f = cmd_obj_add_parsed,  /* function to call */
 226         .data = NULL,      /* 2nd arg of func */
 227         .help_str = "Add an object (name, val)",
 228         .tokens = {        /* token list, NULL terminated */
 229                 (void *)&cmd_obj_action_add,
 230                 (void *)&cmd_obj_name,
 231                 (void *)&cmd_obj_ip,
 232                 NULL,
 233         },
 234 };
 235
 236 /**********************************************************/
 237
 238 struct cmd_help_result {
 239         cmdline_fixed_string_t help;
 240 };
 241
 242 static void cmd_help_parsed(__attribute__((unused)) void *parsed_result,
 243                             struct cmdline *cl,
 244                             __attribute__((unused)) void *data)
 245 {
 246         cmdline_printf(cl,
 247                        "Demo example of command line interface in RTE\n\n"
 248                        "This is a readline-like interface that can be used to\n"
 249                        "debug your RTE application. It supports some features\n"
 250                        "of GNU readline like completion, cut/paste, and some\n"
 251                        "other special bindings.\n\n"
 252                        "This demo shows how rte_cmdline library can be\n"
 253                        "extended to handle a list of objects. There are\n"
 254                        "3 commands:\n"
 255                        "- add obj_name IP\n"
 256                        "- del obj_name\n"
 257                        "- show obj_name\n\n");
 258 }
 259
 260 cmdline_parse_token_string_t cmd_help_help =
 261         TOKEN_STRING_INITIALIZER(struct cmd_help_result, help, "help");
 262
 263 cmdline_parse_inst_t cmd_help = {
 264         .f = cmd_help_parsed,  /* function to call */
 265         .data = NULL,      /* 2nd arg of func */
 266         .help_str = "show help",
 267         .tokens = {        /* token list, NULL terminated */
 268                 (void *)&cmd_help_help,
 269                 NULL,
 270         },
 271 };
 272
 273
 274 /**********************************************************/
 275 /**********************************************************/
 276 /****** CONTEXT (list of instruction) */
 277
 278 cmdline_parse_ctx_t main_ctx[] = {
 279         (cmdline_parse_inst_t *)&cmd_obj_del_show,
 280         (cmdline_parse_inst_t *)&cmd_obj_add,
 281         (cmdline_parse_inst_t *)&cmd_help,
 282         NULL,
 283 };
 284