From 7b0c670150d672ea9dbe06673db743ff25ae2830 Mon Sep 17 00:00:00 2001
From: wangk <2865709459@qq.com>
Date: Tue, 26 Nov 2024 13:59:11 +0800
Subject: [PATCH] Add ip modify function by modifying the xml function
---
kit/kit_xml.c | 74 ++++++++++++++++++++++++++++++++++++++++++++++++++-
kit/kit_xml.h | 5 ++--
test/test.c | 2 +-
3 files changed, 77 insertions(+), 4 deletions(-)
diff --git a/kit/kit_xml.c b/kit/kit_xml.c
index 845a24b..db563ef 100644
--- a/kit/kit_xml.c
+++ b/kit/kit_xml.c
@@ -11,6 +11,7 @@ static void set_item(EMS_XML *EMS_XML_item)
snprintf(EMS_XML_item->can_id_name, NAME_STR_LEN, "%s", "3");
snprintf(EMS_XML_item->can_recv_dlc, NAME_STR_LEN, "%s", "8");
snprintf(EMS_XML_item->can_send_dlc, NAME_STR_LEN, "%s", "8");
+ snprintf(EMS_XML_item->ems_local_ip, NAME_STR_LEN, "%s", "192.168.0.111");
}
//创建节点
@@ -38,6 +39,7 @@ static xmlNodePtr create_node(const EMS_XML *EMS_XML_item)
xmlNewChild(EMS_XML_node, NULL, BAD_CAST"can_id_name", (xmlChar *)EMS_XML_item->can_id_name);
xmlNewChild(EMS_XML_node, NULL, BAD_CAST"can_recv_dlc", (xmlChar *)EMS_XML_item->can_recv_dlc);
xmlNewChild(EMS_XML_node, NULL, BAD_CAST"can_send_dlc", (xmlChar *)EMS_XML_item->can_send_dlc);
+ xmlNewChild(EMS_XML_node, NULL, BAD_CAST"ems_local_ip", (xmlChar *)EMS_XML_item->ems_local_ip);
return EMS_XML_node;
}
@@ -193,6 +195,76 @@ static int parse_EMS_XML_node(xmlDocPtr doc, xmlNodePtr cur)
printf("can_send_dlc: %s\n", key);
xmlFree(key);
}
+ if ((!xmlStrcmp(cur->name, (const xmlChar *)"ems_local_ip"))) {
+ key = xmlNodeListGetString(doc, cur->xmlChildrenNode, 1);
+ int fd;
+ char buffer[1024];
+ ssize_t bytes_read, bytes_written;
+ fd = open("/etc/netplan/01-netcfg.yaml", O_RDWR);
+ if (fd == -1)
+ {
+ perror("open the netcfg failed!");
+ return 1;
+ }
+
+ // 读取文件内容
+ bytes_read = read(fd, buffer, 1024);
+ if (bytes_read == -1) {
+ perror("read file failed!");
+ close(fd);
+ return 1;
+ } else if (bytes_read == 0) {
+ printf("the file is empty\n");
+ close(fd);
+ return 0;
+ }
+ buffer[bytes_read] = '\0';
+
+ // 定位包含 "addresses:" 的行
+ char *addresses_line = strstr(buffer, "addresses:");
+ if (addresses_line!= NULL) {
+ // 定位冒号位置
+ char *colon_pos = strchr(addresses_line, ':');
+ if (colon_pos!= NULL) {
+ colon_pos++;
+ // 跳过可能的空格等字符，找到IP地址起始位置
+ while (*colon_pos!= '\0' && isspace(*colon_pos)) {
+ colon_pos++;
+ }
+ // 记录IP地址起始位置
+ char *ip_start = colon_pos;
+ // 找到IP地址结束位置（遇到逗号、换行符或右方括号且下一个字符不是数字）
+ char *ip_end = ip_start;
+ while (*ip_end!= '\0' && *ip_end!= ',' && *ip_end!= '\n' &&
+ ((*ip_end!= ']') || ((*ip_end == ']') && (!isdigit(*(ip_end + 1)))))) {
+ ip_end++;
+ }
+ // 计算IP地址部分的长度
+ size_t ip_length = ip_end - ip_start;
+ // 替换IP地址
+ memmove(colon_pos, key, strlen(key));
+ // 将剩余部分移动到新位置
+ memmove(colon_pos + strlen(key), ip_end, strlen(ip_end));
+ }
+ }
+
+ // 将文件指针移回文件开头
+ lseek(fd, 0, SEEK_SET);
+
+ // 将修改后的内容写回文件
+ bytes_written = write(fd, buffer, strlen(buffer));
+ if (bytes_written == -1) {
+ perror("write");
+ close(fd);
+ return 1;
+ }
+
+ // 关闭文件
+ close(fd);
+
+ printf("ems_local_ip: %s\n", key);
+ xmlFree(key);
+ }
cur = cur->next;
}
return 0;
@@ -263,7 +335,7 @@ void createXml()
printf("create function:\n");
if (access(EMS_XML_file, F_OK) == 0) {
- printf("The %s is exist!\n", EMS_XML_file);
+ printf("The %s is exist!, please modify the file directly!\n", EMS_XML_file);
}
else {
//文件不存在，创建一个
diff --git a/kit/kit_xml.h b/kit/kit_xml.h
index 21a84af..63aad40 100644
--- a/kit/kit_xml.h
+++ b/kit/kit_xml.h
@@ -3,6 +3,7 @@
#include <stdio.h>
+#include <fcntl.h>
#include <string.h>
#include <unistd.h>
#include <stdlib.h>
@@ -15,14 +16,14 @@
#define NAME_STR_LEN 32
#define DEFAULT_XML_FILE "EMS_XML.xml"
-
typedef struct EMS_XML_t {
int id; //编号
char can_recv_name[NAME_STR_LEN];
char can_send_name[NAME_STR_LEN];
char can_id_name[NAME_STR_LEN];
char can_recv_dlc[NAME_STR_LEN];
- char can_send_dlc[NAME_STR_LEN];
+ char can_send_dlc[NAME_STR_LEN];
+ char ems_local_ip[NAME_STR_LEN];
}EMS_XML;
void createXml();
diff --git a/test/test.c b/test/test.c
index 5a80b67..7ba91b1 100644
--- a/test/test.c
+++ b/test/test.c
@@ -213,6 +213,6 @@ void *testXMLThread(void *arg)
{
logger_level_printf(LOGGER_DEBUG_LEVEL, arg);
printf("XML test!\n");
- createXml();
+ // createXml();
paraXml();
}