【info获取】openwrt获取info源码

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static char *getipolloinfo(__maybe_unused struct api_data *root) {     FILE *fstream=NULL;      char ipaddr[16];     char macaddr[18];     char gateway[16];     char netmask[16];     char fpgaversion[6];     for(int i=0;i<5;i++)     {         switch(i)         {             case 0:                 memset(ipaddr,0,sizeof(ipaddr));                 if(NULL==(fstream=popen("ifconfig br-lan | grep \"inet addr\" | awk '{ print $2}' | awk -F: '{print $2}'| tr -d ['\n']","r")))                  {                     applog(LOG_WARNING,"get ip addr execute command failed\n");                     continue;                  }                 if(NULL!=fgets(ipaddr, sizeof(ipaddr), fstream))                 {                     applog(LOG_WARNING,"ipaddr=%s\n",ipaddr);                   }                 else                 {                     continue;                 }             break;             case 1:                 memset(macaddr,0,sizeof(macaddr));                 if(NULL==(fstream=popen("cat /sys/class/net/br-lan/address| tr -d ['\n']","r")))                  {                     applog(LOG_WARNING,"get mac addr execute command failed\n");                     continue;                  }                 if(NULL!=fgets(macaddr, sizeof(macaddr), fstream))                 {                     applog(LOG_WARNING,"macaddr=%s\n",macaddr);                 }                 else                 {                     continue;                 }             break;             case 2:                 memset(gateway,0,sizeof(gateway));                 if(NULL==(fstream=popen("netstat -rn|grep br-lan|awk '{print $2}'|awk 'NR==1'| tr -d ['\n']","r")))                  {                     applog(LOG_WARNING,"get gateway execute command failed\n");                     continue;                  }                 if(NULL!=fgets(gateway, sizeof(gateway), fstream))                 {                     applog(LOG_WARNING,"gateway=%s\n",gateway);                 }                 else                 {                     continue;                 }             break;             case 3:                 memset(netmask,0,sizeof(netmask));                 if(NULL==(fstream=popen("ifconfig br-lan | grep \"Mask\" | awk '{ print $4}' |awk -F: '{print $2}'| tr -d ['\n']","r")))                  {                     applog(LOG_WARNING,"get Netmask execute command failed\n");                     continue;                  }                 if(NULL!=fgets(netmask, sizeof(netmask), fstream))                 {                     applog(LOG_WARNING,"netmask=%s\n",netmask);                 }                 else                 {                     continue;                 }             break;             case 4:                 memset(fpgaversion,0,sizeof(fpgaversion));                 if(NULL==(fstream=popen("cat /tmp/fpgaversion| tr -d ['\n']","r")))                  {                     applog(LOG_WARNING,"get fpga version command failed\n");                     continue;                  }                 if(NULL!=fgets(fpgaversion, sizeof(fpgaversion), fstream))                 {                     applog(LOG_WARNING,"fpgaversion=%s\n",fpgaversion);                 }                 else                 {                     continue;                 }               break;          }                   pclose(fstream);     }       root = api_add_string(root, "IP", ipaddr, true);     root = api_add_string(root, "Gateway", gateway, true);     root = api_add_string(root, "Netmask", netmask, true);     root = api_add_string(root, "MAC", macaddr, true);     root = api_add_string(root, "FPGA Version", fpgaversion, true);      return (char *)root;       }