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_sync_cb no_cb
  68 static enum qmi_cmd_result
  69 cmd_sync_prepare(struct qmi_dev *qmi, struct qmi_request *req, struct qmi_msg *msg, char *arg)
  70 {
  71         qmi_set_ctl_sync_request(msg);
  72         return QMI_CMD_REQUEST;
  73 }
  74
  75 #define cmd_get_client_id_cb no_cb
  76 static enum qmi_cmd_result
  77 cmd_get_client_id_prepare(struct qmi_dev *qmi, struct qmi_request *req, struct qmi_msg *msg, char *arg)
  78 {
  79         QmiService svc = qmi_service_get_by_name(arg);
  80
  81         if (svc < 0) {
  82                 fprintf(stderr, "Invalid service name '%s'\n", arg);
  83                 return QMI_CMD_EXIT;
  84         }
  85
  86         if (qmi_service_connect(qmi, svc, -1)) {
  87                 fprintf(stderr, "Failed to connect to service\n");
  88                 return QMI_CMD_EXIT;
  89         }
  90
  91         printf("%d\n", qmi_service_get_client_id(qmi, svc));
  92         return QMI_CMD_DONE;
  93 }
  94
  95 #define cmd_set_client_id_cb no_cb
  96 static enum qmi_cmd_result
  97 cmd_set_client_id_prepare(struct qmi_dev *qmi, struct qmi_request *req, struct qmi_msg *msg, char *arg)
  98 {
  99         QmiService svc;
 100         int id;
 101         char *s;
 102
 103         s = strchr(arg, ',');
 104         if (!s) {
 105                 fprintf(stderr, "Invalid argument\n");
 106                 return QMI_CMD_EXIT;
 107         }
 108         *s = 0;
 109         s++;
 110
 111         id = strtoul(s, &s, 0);
 112         if (s && *s) {
 113                 fprintf(stderr, "Invalid argument\n");
 114                 return QMI_CMD_EXIT;
 115         }
 116
 117         svc = qmi_service_get_by_name(arg);
 118         if (svc < 0) {
 119                 fprintf(stderr, "Invalid service name '%s'\n", arg);
 120                 return QMI_CMD_EXIT;
 121         }
 122
 123         if (qmi_service_connect(qmi, svc, id)) {
 124                 fprintf(stderr, "Failed to connect to service\n");
 125                 return QMI_CMD_EXIT;
 126         }
 127
 128         return QMI_CMD_DONE;
 129 }
 130
 131 static int
 132 qmi_get_array_idx(const char **array, int size, const char *str)
 133 {
 134         int i;
 135
 136         for (i = 0; i < size; i++) {
 137                 if (!array[i])
 138                         continue;
 139
 140                 if (!strcmp(array[i], str))
 141                         return i;
 142         }
 143
 144         return -1;
 145 }
 146
 147 #define cmd_ctl_set_data_format_cb no_cb
 148 static enum qmi_cmd_result
 149 cmd_ctl_set_data_format_prepare(struct qmi_dev *qmi, struct qmi_request *req, struct qmi_msg *msg, char *arg)
 150 {
 151         struct qmi_ctl_set_data_format_request sreq = {};
 152         const char *modes[] = {
 153                 [QMI_CTL_DATA_LINK_PROTOCOL_802_3] = "802.3",
 154                 [QMI_CTL_DATA_LINK_PROTOCOL_RAW_IP] = "raw-ip",
 155         };
 156         int mode = qmi_get_array_idx(modes, ARRAY_SIZE(modes), arg);
 157
 158         if (mode < 0) {
 159                 uqmi_add_error("Invalid mode (modes: 802.3, raw-ip)");
 160                 return QMI_CMD_EXIT;
 161         }
 162
 163         qmi_set_ctl_set_data_format_request(msg, &sreq);
 164         return QMI_CMD_DONE;
 165 }
 166
 167 #include "commands-wds.c"
 168 #include "commands-dms.c"
 169 #include "commands-nas.c"
 170 #include "commands-wms.c"
 171 #include "commands-wda.c"
 172 #include "commands-uim.c"
 173
 174 #define __uqmi_command(_name, _optname, _arg, _type) \
 175         [__UQMI_COMMAND_##_name] = { \
 176                 .name = #_optname, \
 177                 .type = _type, \
 178                 .prepare = cmd_##_name##_prepare, \
 179                 .cb = cmd_##_name##_cb, \
 180         }
 181
 182 const struct uqmi_cmd_handler uqmi_cmd_handler[__UQMI_COMMAND_LAST] = {
 183         __uqmi_commands
 184 };
 185 #undef __uqmi_command
 186
 187 static struct uqmi_cmd *cmds;
 188 static int n_cmds;
 189
 190 void uqmi_add_command(char *arg, int cmd)
 191 {
 192         int idx = n_cmds++;
 193
 194         cmds = realloc(cmds, n_cmds * sizeof(*cmds));
 195         cmds[idx].handler = &uqmi_cmd_handler[cmd];
 196         cmds[idx].arg = optarg;
 197 }
 198
 199 static void uqmi_print_result(struct blob_attr *data)
 200 {
 201         char *str;
 202
 203         if (!blob_len(data))
 204                 return;
 205
 206         str = blobmsg_format_json_indent(blob_data(data), false, single_line ? -1 : 0);
 207         if (!str)
 208                 return;
 209
 210         printf("%s\n", str);
 211         free(str);
 212 }
 213
 214 static bool __uqmi_run_commands(struct qmi_dev *qmi, bool option)
 215 {
 216         static struct qmi_request req;
 217         char *buf = qmi->buf;
 218         int i;
 219
 220         for (i = 0; i < n_cmds; i++) {
 221                 enum qmi_cmd_result res;
 222                 bool cmd_option = cmds[i].handler->type == CMD_TYPE_OPTION;
 223                 bool do_break = false;
 224
 225                 if (cmd_option != option)
 226                         continue;
 227
 228                 blob_buf_init(&status, 0);
 229                 if (cmds[i].handler->type > QMI_SERVICE_CTL &&
 230                     qmi_service_connect(qmi, cmds[i].handler->type, -1)) {
 231                         uqmi_add_error("Failed to connect to service");
 232                         res = QMI_CMD_EXIT;
 233                 } else {
 234                         res = cmds[i].handler->prepare(qmi, &req, (void *) buf, cmds[i].arg);
 235                 }
 236
 237                 if (res == QMI_CMD_REQUEST) {
 238                         qmi_request_start(qmi, &req, cmds[i].handler->cb);
 239                         req.no_error_cb = true;
 240                         if (qmi_request_wait(qmi, &req)) {
 241                                 uqmi_add_error(qmi_get_error_str(req.ret));
 242                                 do_break = true;
 243                         }
 244                 } else if (res == QMI_CMD_EXIT) {
 245                         do_break = true;
 246                 }
 247
 248                 uqmi_print_result(status.head);
 249                 if (do_break)
 250                         return false;
 251         }
 252         return true;
 253 }
 254
 255 int uqmi_add_error(const char *msg)
 256 {
 257         blobmsg_add_string(&status, NULL, msg);
 258         return QMI_CMD_EXIT;
 259 }
 260
 261 bool uqmi_run_commands(struct qmi_dev *qmi)
 262 {
 263         bool ret;
 264
 265         ret = __uqmi_run_commands(qmi, true) &&
 266               __uqmi_run_commands(qmi, false);
 267
 268         free(cmds);
 269         cmds = NULL;
 270         n_cmds = 0;
 271
 272         return ret;
 273 }