linux设备使用http服务自动更新检测

#include "stdio.h" #include "unistd.h" #include <stdlib.h> #include <unistd.h> #include <string.h> #include <sys/stat.h> #include "common.h" #ifndef path #define version_path "." #define path "./update" #endif // !1 char new_version = 0; //0 no check //1 new version //2 download finished int new_version_int = 0; static int get_version(char * buf){ int ret = -1; if(strstr(buf,"version <") != NULL) { char * p = strstr(buf,"<"); char * d = strstr(buf,">"); if(p!=NULL&&d!=NULL){ *d = 0; ret = atoi(p+1); } } return ret; } void version_check(void){ printf("[-------------------------------------------------------------------------------------]version_check\n"); if(new_version == 0){ char ver1[20] = {0}; char ver2[20] = {0}; int ver_int1 = 0; int ver_int2 = 0; system("rm "path" -rf"); system("mkdir "path); system("wget "download_version" -O "path"/version.txt"); FILE * f1 = fopen(path"/version.txt","r"); FILE * f2 = fopen(version_path"/version","r"); if(f1 == NULL||f2 == NULL) return; fread(ver1,17,1,f1); fread(ver2,17,1,f2); ver_int1 = get_version(ver1); ver_int2 = get_version(ver2); printf("%d,%d\n",ver_int1,ver_int2); if((ver_int1 >= 0)&&(ver_int2 >= 0)){ if(ver_int1 == ver_int2) printf("no new version\n"); else{ new_version = 1; new_version_int = ver_int1; printf("new version\n"); } }else printf("check fail\n"); fclose(f1); fclose(f2); system("rm "path"/version.txt"); } } void download_version_check(void){ printf("[-------------------------------------------------------------------------------------]download_version_check\n"); if(access(path"/download_finished", F_OK) == 0){ char ver1[20] = {0}; char ver2[20] = {0}; int ver_int1 = 0; int ver_int2 = 0; system("rm "path"/version.txt"); system("wget "download_version" -O "path"/version.txt"); FILE * f1 = fopen(path"/version.txt","r"); FILE * f2 = fopen(path"/download_finished","r"); if(f1 == NULL||f2 == NULL) return; fread(ver1,16,1,f1); fread(ver2,16,1,f2); ver_int1 = get_version(ver1); ver_int2 = get_version(ver2); printf("[download_version_check]:%d,%d\n",ver_int1,ver_int2); if((ver_int1 >= 0)&&(ver_int2 >= 0)){ if(ver_int1 == ver_int2){ new_version = 2; new_version_int = ver_int1; printf("download_finished\n"); }else{ new_version = 1; new_version_int = ver_int1; system("rm "path"/download_finished"); printf("new version\n"); } }else printf("check fail\n"); fclose(f1); fclose(f2); system("rm "path"/version.txt"); } } void packet_download(void){ printf("[-------------------------------------------------------------------------------------]packet_download\n"); if(new_version == 1) { int percent = 0; char buf[100] = {0}; char bufj[20] ={0}; char bufsend[200] = {0}; struct stat file_stat; sprintf(bufsend,"wget "download_packet_c" -O "path"/sha1Tab",new_version_int); system(bufsend); sprintf(bufsend,"wget "download_packet" -O "path"/update.zip &>"version_path"/download.log &",new_version_int); system(bufsend); sleep(1); FILE * file = fopen(version_path"/download.log","r"); while(1){ sleep(1); stat(version_path"/download.log",&file_stat); if(file_stat.st_size > 200){ fseek(file, -100, SEEK_END); fread(buf,100,1,file); char *p = strstr(buf,"\n"); char *d = strstr(p+1,"\n"); if(p != NULL&&d != NULL){ *d = 0; char * s = strstr(buf,"%"); if(s != NULL){ memcpy(bufj,s-3,3); percent = atoi(bufj); if(percent!=0) printf("downloading ...%s,%d\n",bufj,percent); } s = strstr(buf,"100%"); if(s != NULL){ printf("download finished ... 100%%,100%%\n"); new_version = 2; break; } } } } fclose(file); system("rm "version_path"/download.log"); system("touch "path"/download_finished"); char download_finished[200] = {0}; sprintf(download_finished,"echo \"version <%05d>\" > "path"/download_finished",new_version_int); system(download_finished); } } void packet_update(void){ printf("[-------------------------------------------------------------------------------------]packet_update\n"); if(new_version == 2){ printf("packet_update ...\n"); system("touch /tmp/update_prepare_ok"); #if auto_recovery system("recovery &"); #endif } } int main(void){ #if use_this_version system("echo "YR_VERSION" > "version_path"/version"); #endif download_version_check(); version_check(); packet_download(); packet_update(); }