/**
* @brief save_img Save buffer from POST requests
*
* @param thr_arg Thread arg struct.
* @param buff The char * from POST request
* @param len The length of buff
* @param md5 Parsed md5 from url
*
* @return 1 for success and -1 for fail
*/
int save_img(thr_arg_t *thr_arg, const char *buff, const int len, char *md5)
{
int result = -1;
LOG_PRINT(LOG_DEBUG, "Begin to Caculate MD5...");
md5_state_t mdctx;
md5_byte_t md_value[16];
char md5sum[33];
int i;
int h, l;
md5_init(&mdctx);
md5_append(&mdctx, (const unsigned char*)(buff), len);
md5_finish(&mdctx, md_value);
for(i=0; i<16; ++i)
{
h = md_value[i] & 0xf0;
h >>= 4;
l = md_value[i] & 0x0f;
md5sum[i * 2] = (char)((h >= 0x0 && h <= 0x9) ? (h + 0x30) : (h + 0x57));
md5sum[i * 2 + 1] = (char)((l >= 0x0 && l <= 0x9) ? (l + 0x30) : (l + 0x57));
}
md5sum[32] = '\0';
strcpy(md5, md5sum);
LOG_PRINT(LOG_DEBUG, "md5: %s", md5sum);
char cache_key[CACHE_KEY_SIZE];
char save_path[512];
char save_name[512];
gen_key(cache_key, md5sum, 0);
if(exist_cache(thr_arg, cache_key) == 1)
{
LOG_PRINT(LOG_DEBUG, "File Exist, Needn't Save.");
result = 1;
goto done;
}
LOG_PRINT(LOG_DEBUG, "exist_cache not found. Begin to Save File.");
if(settings.mode != 1)
{
if(save_img_db(thr_arg, cache_key, buff, len) == -1)
{
LOG_PRINT(LOG_DEBUG, "save_img_db failed.");
goto done;
}
else
{
LOG_PRINT(LOG_DEBUG, "save_img_db succ.");
result = 1;
goto done;
}
}
//caculate 2-level path
int lvl1 = str_hash(md5sum);
int lvl2 = str_hash(md5sum + 3);
snprintf(save_path, 512, "%s/%d/%d/%s", settings.img_path, lvl1, lvl2, md5sum);
LOG_PRINT(LOG_DEBUG, "save_path: %s", save_path);
if(is_dir(save_path) == 1)
{
LOG_PRINT(LOG_DEBUG, "Check File Exist. Needn't Save.");
goto cache;
}
if(mk_dirs(save_path) == -1)
{
LOG_PRINT(LOG_DEBUG, "save_path[%s] Create Failed!", save_path);
goto done;
}
LOG_PRINT(LOG_DEBUG, "save_path[%s] Create Finish.", save_path);
snprintf(save_name, 512, "%s/0*0", save_path);
LOG_PRINT(LOG_DEBUG, "save_name-->: %s", save_name);
if(new_img(buff, len, save_name) == -1)
{
LOG_PRINT(LOG_DEBUG, "Save Image[%s] Failed!", save_name);
goto done;
}
cache:
if(len < CACHE_MAX_SIZE)
{
gen_key(cache_key, md5sum, 0);
set_cache_bin(thr_arg, cache_key, buff, len);
}
result = 1;
done:
return result;
}
/**
* @brief save_img Save buffer from POST requests
*
* @param buff The char * from POST request
* @param len The length of buff
* @param md5 Parsed md5 from url
*
* @return ZIMG_OK for success and ZIMG_ERR for fail
*/
int save_img(const char *buff, const int len, char *md5sum){
if(buff == NULL || md5sum == NULL || len <=0){
return ZIMG_ERR;
}
const char *image_format = get_img_format(buff);
if(image_format == NULL){
return ZIMG_ERR;
}
calc_md5sum(buff,len,md5sum);
char cache_key[45];
sprintf(cache_key, "img:%s:0:0:1:0", md5sum);
if(exist_cache(cache_key) == 1){
LOG_PRINT(LOG_INFO, "File Exist, Needn't Save.");
return ZIMG_OK;
}
LOG_PRINT(LOG_INFO, "exist_cache not found. Begin to Check File.");
char *save_path = (char *)malloc(512);
if(save_path == NULL){
return ZIMG_ERR;
}
//caculate 2-level path
int lvl1 = str_hash(md5sum);
int lvl2 = str_hash(md5sum + 3);
sprintf(save_path, "%s/%d/%d/%s/0*0p", settings.img_path, lvl1, lvl2, md5sum);
LOG_PRINT(LOG_INFO, "save_path: %s", save_path);
if(is_file(save_path) == ZIMG_OK){
LOG_PRINT(LOG_INFO, "Check File Exist. Needn't Save.");
//cache
if(len < CACHE_MAX_SIZE)
{
// to gen cache_key like this: rsp_path-/926ee2f570dc50b2575e35a6712b08ce
set_cache_bin(cache_key, buff, len);
}
free(save_path);
return ZIMG_OK;
}else{
char *p = strrchr(save_path,'/');
*p = '\0';
if(mk_dirs(save_path) == ZIMG_ERR){
LOG_PRINT(LOG_ERROR, "save_path[%s] Create Failed!", save_path);
free(save_path);
return ZIMG_ERR;
}
chdir(_init_path);
LOG_PRINT(LOG_INFO, "save_path[%s] Create Finish.", save_path);
*p = '/';
LOG_PRINT(LOG_INFO, "save_name-->: %s", save_path);
if(new_img(buff, len, save_path) != ZIMG_OK){
LOG_PRINT(LOG_WARNING, "Save Image[%s] Failed!", save_path);
free(save_path);
return ZIMG_ERR;
}
//shrink as JPEG
p = strrchr(save_path,'/');
memcpy(p+1,"0.jpg",5);
*(p + 6) = '\0';
if(convert2jpg(buff,len,save_path) == ZIMG_OK){
LOG_PRINT(LOG_WARNING, "Convert Image to JPEG [%s] OK!", save_path);
}
free(save_path);
return ZIMG_OK;
}
}