5.0基线代码获取
一. 动态库sdk的下载和编译
二. 本参考Demo的下载和编译
- 下载源码applications_sample_iot_connect_samples
- 将下载的applications_sample_iot_connect_samples文件夹拷贝到applications/sample文件夹
- 将applications_sample_iot_connect_samples文件夹改名iot_connect_samples
- 可参考yarward_iotc/digital_signage编写自己的demo，并将自己的demo添加到编译子系统中
三 添加编译子系统构建APP demo
以社区开源产品(rk3568)为例，其余产品可按实际位置自行修改
- 修改文件根目录下的BUILD.gn, 将自己想编译的demo目标添加到deps中
# 如编译wifi_ble_combo/yarward_iotc_iotc/digital_signage示例
group("iot_connect_samples") {
if (iot_connect_samples_feature_appPath == "wifi_ble_combo/yarward_iotc/digital_signage") {
deps = [ "$app_build_path:yarward_iotc_app" ]
}
}
- 修改文件根目录下的bundle.json
# 如编译wifi_ble_combo/yarward_iotc_iotc/digital_signage示例
"build": {
"sub_component": [
"//applications/sample/iot_connect_samples:iot_connect_samples",
"//applications/sample/iot_connect_samples/wifi_ble_combo/yarward_iotc/digital_signage/etc/init:iot_connect_combo.cfg"
],
"inner_kits": [],
"test": []
}
- 如编译wifi_ble_combo/yarward_iotc/digital_signage的示例，需iot_connect_samples_feature_appPath变量的值 vendor/hihope/rk3568/config.json 中添加
"subsystem": "applications",
"components": [
{
"component": "iot_connect_samples",
"features": [
"iot_connect_samples_feature_appPath = wifi_ble_combo/yarward_iotc/digital_signage" #编译demo示例可选，可为空
]
}
]
- productdefine/common/products/ohos-sdk.json
"subsystem": "applications",
"components": [
{ "component": "iot_connect_samples" },
...
]
- build/compile_standard_whitelist.json
"third_deps_bundle_not_add": [
"//applications/sample/iot_connect_samples:iot_connect_samples",
...
]
- 已解决编译程序无法自启动运行 需要在BUILD.gn文件中作如下修改 路径： applications/sample/iot_connect_samples/wifi_ble_combo/yarward_iotc/digital_signage/etc/init/BUILD.gn 修改如下内容
ohos_prebuilt_etc("iot_connect_combo.cfg") { source = "iot_connect_combo.cfg" relative_install_dir = "init" part_name = "iot_connect_samples" subsystem_name = "applications" }
对high_privilege_process_list.json文件增加如下内容 路径如下： vendor/hihope/rk3568/security_config/high_privilege_process_list.json
修改内容
{
"name": "yarward_iotc_app",
"uid": "root",
"gid": "root"
}
修改selinux.gni文件，使编译出来的镜像不开启selinux 路径为： base/security/selinux_adapter/selinux.gni 修改内容
declare_args() { selinux_adapter_enforce = false }
四. DNS问题修复说明
找到resolvconf.c文件 路径： third_party/musl/src/network/resolvconf.c 在get_resolv_conf_ext函数中会有报错 DNS_CONFIG_PRINT("__get_resolv_conf OHOS_GET_CONFIG_FUNC_NAME err %d\n", ret); 再次行前面添加 goto etc_resolv_conf; 可修复无法DNS解析问题 修改完需要重新编译系统 修改后的代码如下
int get_resolv_conf_ext(struct resolvconf *conf, char *search, size_t search_sz, int netid) { char line[256]; unsigned char _buf[256]; FILE *f, _f; int nns = 0;
conf->ndots = 1;
conf->timeout = 5;
conf->attempts = 2;
if (search) *search = 0;
#if OHOS_DNS_PROXY_BY_NETSYS GetConfig func = load_config_getter(); if (!func) { DNS_CONFIG_PRINT("%s: loading %s failed, use %s as a fallback", func, OHOS_GET_CONFIG_FUNC_NAME, DNS_RESOLV_CONF_PATH); goto etc_resolv_conf; }
struct resolv_config config = {0};
int ret = func(netid, &config);
if (ret < 0) {
goto etc_resolv_conf;
DNS_CONFIG_PRINT("__get_resolv_conf OHOS_GET_CONFIG_FUNC_NAME err %d\n", ret);
#ifndef LITEOS MUSL_LOGE("%{public}s: %{public}d: resolv_config return: %{public}d for netid %{public}d", func, LINE, ret, netid); #endif return EAI_NONAME; } int32_t timeout_second = config.timeout_ms / 1000;
netsys_conf: if (timeout_second > 0) { if (timeout_second >= 60) { conf->timeout = 60; } else { conf->timeout = timeout_second; } } if (config.retry_count > 0) { if (config.retry_count >= 10) { conf->attempts = 10; } else { conf->attempts = config.retry_count; } } for (int i = 0; i < MAX_SERVER_NUM; ++i) { if (config.nameservers[i] == NULL || config.nameservers[i][0] == 0 || nns >= MAXNS) { continue; } if (__lookup_ipliteral(conf->ns + nns, config.nameservers[i], AF_UNSPEC) > 0) { nns++; } }
if (nns != 0) {
goto get_conf_ok;
}
etc_resolv_conf: #endif f = __fopen_rb_ca(DNS_RESOLV_CONF_PATH, &_f, _buf, sizeof _buf); if (!f) switch (errno) { case ENOENT: case ENOTDIR: case EACCES: goto no_resolv_conf; default: #ifndef LITEOS MUSL_LOGE("%{public}s: %{public}d: open resolv.conf failed with Unexpected errno: %{public}d", func, LINE, errno); #endif return -1; }
while (fgets(line, sizeof line, f)) {
char *p, *z;
if (!strchr(line, '\n') && !feof(f)) {
/* Ignore lines that get truncated rather than
* potentially misinterpreting them. */
int c;
do c = getc(f);
while (c != '\n' && c != EOF);
continue;
}
if (!strncmp(line, "options", 7) && isspace(line[7])) {
p = strstr(line, "ndots:");
if (p && isdigit(p[6])) {
p += 6;
unsigned long x = strtoul(p, &z, 10);
if (z != p) conf->ndots = x > 15 ? 15 : x;
}
p = strstr(line, "attempts:");
if (p && isdigit(p[9])) {
p += 9;
unsigned long x = strtoul(p, &z, 10);
if (z != p) conf->attempts = x > 10 ? 10 : x;
}
p = strstr(line, "timeout:");
if (p && (isdigit(p[8]) || p[8]=='.')) {
p += 8;
unsigned long x = strtoul(p, &z, 10);
if (z != p) conf->timeout = x > 60 ? 60 : x;
}
continue;
}
if (!strncmp(line, "nameserver", 10) && isspace(line[10])) {
if (nns >= MAXNS) continue;
for (p=line+11; isspace(*p); p++);
for (z=p; *z && !isspace(*z); z++);
*z=0;
if (__lookup_ipliteral(conf->ns+nns, p, AF_UNSPEC) > 0)
nns++;
continue;
}
if (!search) continue;
if ((strncmp(line, "domain", 6) && strncmp(line, "search", 6))
|| !isspace(line[6]))
continue;
for (p=line+7; isspace(*p); p++);
size_t l = strlen(p);
/* This can never happen anyway with chosen buffer sizes. */
if (l >= search_sz) continue;
memcpy(search, p, l+1);
}
__fclose_ca(f);
no_resolv_conf: if (!nns) { __lookup_ipliteral(conf->ns, "127.0.0.1", AF_UNSPEC); nns = 1; }
get_conf_ok: conf->nns = nns;
return 0;
}
五.selinux校验处理
启动编译的可执行文件需要selinux权限，调试时可选择临时关闭和临时关闭，或者根据需求进行配置
-
使用下面命令进行关闭selinux hdc shell mount -o rw,remount / hdc shell "sed -i 's/enforcing/permissive/g' /system/etc/selinux/config" hdc shell "cat /system/etc/selinux/config |grep SELINUX="
-
selinux配置相关服务 参考selinux配置
六、SN问题
修改ble_svc_custom_sec_data.c foundation/communication/iot_connect/core/ble/application/profile/ble_svc_custom_sec_data.c 在BuildBleCustomSecDataService后面增加如下代码，进行发两遍处理 LinkLayerReportSvcDataEnc(BLE_SVC_CUSTOM_SEC_DATA, (const uint8_t *)*out, *outLen); 修改后如下 static int32_t BleCustomSecDataGetChar(IotcJson *vendorItem, uint8_t **out, uint32_t *outLen, DevCtlGetCharStates getChar) { IotcJson *arrayObj = NULL; int32_t ret = getChar(vendorItem, &arrayObj); if (ret != IOTC_OK) { IOTC_LOGW("get char control error %d", ret); return ret; }
#if IOTC_CONF_AILIFE_SUPPORT ret = BuildBleCustomSecDataSingleService(arrayObj, out, outLen); #else ret = BuildBleCustomSecDataService(arrayObj, out, outLen); LinkLayerReportSvcDataEnc(BLE_SVC_CUSTOM_SEC_DATA, (const uint8_t *)*out, *outLen); #endif IotcJsonDelete(arrayObj); if (ret != IOTC_OK) { IOTC_LOGW("build get char json array %d", ret); return ret; }
return IOTC_OK;
}