commands.c

   1 /*
   2  * uqmi -- tiny QMI support implementation
   3  *
   4  * Copyright (C) 2014-2015 Felix Fietkau <nbd@openwrt.org>
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the
  18  * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  19  * Boston, MA 02110-1301 USA.
  20  */
  21
  22 #include <stdio.h>
  23 #include <string.h>
  24 #include <strings.h>
  25 #include <stdlib.h>
  26 #include <unistd.h>
  27
  28 #include <libubox/blobmsg.h>
  29 #include <libubox/blobmsg_json.h>
  30
  31 #include "uqmi.h"
  32 #include "commands.h"
  33
  34 static struct blob_buf status;
  35 bool single_line = false;
  36
  37 static void no_cb(struct qmi_dev *qmi, struct qmi_request *req, struct qmi_msg *msg)
  38 {
  39 }
  40
  41 static void cmd_version_cb(struct qmi_dev *qmi, struct qmi_request *req, struct qmi_msg *msg)
  42 {
  43         struct qmi_ctl_get_version_info_response res;
  44         void *c;
  45         char name_buf[16];
  46         int i;
  47
  48         qmi_parse_ctl_get_version_info_response(msg, &res);
  49
  50         c = blobmsg_open_table(&status, NULL);
  51         for (i = 0; i < res.data.service_list_n; i++) {
  52                 sprintf(name_buf, "service_%d", res.data.service_list[i].service);
  53                 blobmsg_printf(&status, name_buf, "%d,%d",
  54                         res.data.service_list[i].major_version,
  55                         res.data.service_list[i].minor_version);
  56         }
  57         blobmsg_close_table(&status, c);
  58 }
  59
  60 static enum qmi_cmd_result
  61 cmd_version_prepare(struct qmi_dev *qmi, struct qmi_request *req, struct qmi_msg *msg, char *arg)
  62 {
  63         qmi_set_ctl_get_version_info_request(msg);
  64         return QMI_CMD_REQUEST;
  65 }
  66
  67 #define cmd_get_client_id_cb no_cb
  68 static enum qmi_cmd_result
  69 cmd_get_client_id_prepare(struct qmi_dev *qmi, struct qmi_request *req, struct qmi_msg *msg, char *arg)
  70 {
  71         QmiService svc = qmi_service_get_by_name(arg);
  72
  73         if (svc < 0) {
  74                 fprintf(stderr, "Invalid service name '%s'\n", arg);
  75                 return QMI_CMD_EXIT;
  76         }
  77
  78         if (qmi_service_connect(qmi, svc, -1)) {
  79                 fprintf(stderr, "Failed to connect to service\n");
  80                 return QMI_CMD_EXIT;
  81         }
  82
  83         printf("%d\n", qmi_service_get_client_id(qmi, svc));
  84         return QMI_CMD_DONE;
  85 }
  86
  87 #define cmd_set_client_id_cb no_cb
  88 static enum qmi_cmd_result
  89 cmd_set_client_id_prepare(struct qmi_dev *qmi, struct qmi_request *req, struct qmi_msg *msg, char *arg)
  90 {
  91         QmiService svc;
  92         int id;
  93         char *s;
  94
  95         s = strchr(arg, ',');
  96         if (!s) {
  97                 fprintf(stderr, "Invalid argument\n");
  98                 return QMI_CMD_EXIT;
  99         }
 100         *s = 0;
 101         s++;
 102
 103         id = strtoul(s, &s, 0);
 104         if (s && *s) {
 105                 fprintf(stderr, "Invalid argument\n");
 106                 return QMI_CMD_EXIT;
 107         }
 108
 109         svc = qmi_service_get_by_name(arg);
 110         if (svc < 0) {
 111                 fprintf(stderr, "Invalid service name '%s'\n", arg);
 112                 return QMI_CMD_EXIT;
 113         }
 114
 115         if (qmi_service_connect(qmi, svc, id)) {
 116                 fprintf(stderr, "Failed to connect to service\n");
 117                 return QMI_CMD_EXIT;
 118         }
 119
 120         return QMI_CMD_DONE;
 121 }
 122
 123 static int
 124 qmi_get_array_idx(const char **array, int size, const char *str)
 125 {
 126         int i;
 127
 128         for (i = 0; i < size; i++) {
 129                 if (!array[i])
 130                         continue;
 131
 132                 if (!strcmp(array[i], str))
 133                         return i;
 134         }
 135
 136         return -1;
 137 }
 138
 139 #define cmd_ctl_set_data_format_cb no_cb
 140 static enum qmi_cmd_result
 141 cmd_ctl_set_data_format_prepare(struct qmi_dev *qmi, struct qmi_request *req, struct qmi_msg *msg, char *arg)
 142 {
 143         struct qmi_ctl_set_data_format_request sreq = {};
 144         const char *modes[] = {
 145                 [QMI_CTL_DATA_LINK_PROTOCOL_802_3] = "802.3",
 146                 [QMI_CTL_DATA_LINK_PROTOCOL_RAW_IP] = "raw-ip",
 147         };
 148         int mode = qmi_get_array_idx(modes, ARRAY_SIZE(modes), arg);
 149
 150         if (mode < 0) {
 151                 uqmi_add_error("Invalid mode (modes: 802.3, raw-ip)");
 152                 return QMI_CMD_EXIT;
 153         }
 154
 155         qmi_set_ctl_set_data_format_request(msg, &sreq);
 156         return QMI_CMD_DONE;
 157 }
 158
 159 #include "commands-wds.c"
 160 #include "commands-dms.c"
 161 #include "commands-nas.c"
 162 #include "commands-wms.c"
 163 #include "commands-wda.c"
 164
 165 #define __uqmi_command(_name, _optname, _arg, _type) \
 166         [__UQMI_COMMAND_##_name] = { \
 167                 .name = #_optname, \
 168                 .type = _type, \
 169                 .prepare = cmd_##_name##_prepare, \
 170                 .cb = cmd_##_name##_cb, \
 171         }
 172
 173 const struct uqmi_cmd_handler uqmi_cmd_handler[__UQMI_COMMAND_LAST] = {
 174         __uqmi_commands
 175 };
 176 #undef __uqmi_command
 177
 178 static struct uqmi_cmd *cmds;
 179 static int n_cmds;
 180
 181 void uqmi_add_command(char *arg, int cmd)
 182 {
 183         int idx = n_cmds++;
 184
 185         cmds = realloc(cmds, n_cmds * sizeof(*cmds));
 186         cmds[idx].handler = &uqmi_cmd_handler[cmd];
 187         cmds[idx].arg = optarg;
 188 }
 189
 190 static void uqmi_print_result(struct blob_attr *data)
 191 {
 192         char *str;
 193
 194         if (!blob_len(data))
 195                 return;
 196
 197         str = blobmsg_format_json_indent(blob_data(data), false, single_line ? -1 : 0);
 198         if (!str)
 199                 return;
 200
 201         printf("%s\n", str);
 202         free(str);
 203 }
 204
 205 static bool __uqmi_run_commands(struct qmi_dev *qmi, bool option)
 206 {
 207         static char buf[2048];
 208         static struct qmi_request req;
 209         int i;
 210
 211         for (i = 0; i < n_cmds; i++) {
 212                 enum qmi_cmd_result res;
 213                 bool cmd_option = cmds[i].handler->type == CMD_TYPE_OPTION;
 214                 bool do_break = false;
 215
 216                 if (cmd_option != option)
 217                         continue;
 218
 219                 blob_buf_init(&status, 0);
 220                 if (cmds[i].handler->type > QMI_SERVICE_CTL &&
 221                     qmi_service_connect(qmi, cmds[i].handler->type, -1)) {
 222                         uqmi_add_error("Failed to connect to service");
 223                         res = QMI_CMD_EXIT;
 224                 } else {
 225                         res = cmds[i].handler->prepare(qmi, &req, (void *) buf, cmds[i].arg);
 226                 }
 227
 228                 if (res == QMI_CMD_REQUEST) {
 229                         qmi_request_start(qmi, &req, (void *) buf, cmds[i].handler->cb);
 230                         req.no_error_cb = true;
 231                         if (qmi_request_wait(qmi, &req)) {
 232                                 uqmi_add_error(qmi_get_error_str(req.ret));
 233                                 do_break = true;
 234                         }
 235                 } else if (res == QMI_CMD_EXIT) {
 236                         do_break = true;
 237                 }
 238
 239                 uqmi_print_result(status.head);
 240                 if (do_break)
 241                         return false;
 242         }
 243         return true;
 244 }
 245
 246 int uqmi_add_error(const char *msg)
 247 {
 248         blobmsg_add_string(&status, NULL, msg);
 249         return QMI_CMD_EXIT;
 250 }
 251
 252 bool uqmi_run_commands(struct qmi_dev *qmi)
 253 {
 254         bool ret;
 255
 256         ret = __uqmi_run_commands(qmi, true) &&
 257               __uqmi_run_commands(qmi, false);
 258
 259         free(cmds);
 260         cmds = NULL;
 261         n_cmds = 0;
 262
 263         return ret;
 264 }