Cool_Tools/CMoe-Counter
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fix: flock & optimize: fp close

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源文雨 2023-03-04 17:55:25 +08:00
parent b220875405
commit 6db67452a1
1 changed files with 51 additions and 41 deletions
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92
cmoe.c
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@ -13,6 +13,8 @@ static counter_t counter;
static char* datfile = "dat.sp";
static char* token = "fumiama";
static FILE* fp;
#define ADD_HEADER_PARAM(buf, offset, h, p) sprintf(buf + offset, (h), (p))
#define HEADER(content_type) HTTP200 SERVER_STRING CACHE_CTRL CONTENT_TYPE(content_type)
#define headers(content_len, content_type) (_headers(content_len, HEADER(content_type), sizeof(HEADER(content_type))-1))
@ -24,16 +26,16 @@ static void _headers(uint32_t content_len, const char* h, size_t hlen) {
exit(EXIT_FAILURE);
}
content_len += offset+hlen;
struct iovec iov[3] = {{&content_len, sizeof(uint32_t)}, {h, hlen}, {buf, offset}};
writev(1, &iov, 3);
struct iovec iov[3] = {{&content_len, sizeof(uint32_t)}, {(void*)h, hlen}, {(void*)buf, offset}};
writev(1, (const struct iovec *)&iov, 3);
}
static void http_error(errcode_enum_t code, char* msg) {
uint32_t len = strlen(msg) + typel[code];
char* str = malloc(len);
sprintf(str, types[code], msg);
struct iovec iov[2] = {{&len, sizeof(uint32_t)}, {str, len}};
writev(1, &iov, 2);
struct iovec iov[2] = {{(void*)&len, sizeof(uint32_t)}, {(void*)str, len}};
writev(1, (const struct iovec *)&iov, 2);
free(str);
}
@ -93,17 +95,10 @@ static uint32_t get_content_len(int isbig, uint16_t* len_type, char* cntstr) {
#define has_next(fp, ch) ((ch=getc(fp)),(feof(fp)?0:(ungetc(ch,fp),1)))
#define set_type(name, t, l) if(!strcmp(theme, name)) {\
theme_type = t;\
len_type = l;\
theme_type = (char**)t;\
len_type = (uint16_t*)l;\
}
static void return_count(char* name, char* theme) {
FILE* fp = fopen(datfile, "rb+");
if(!fp) fp = fopen(datfile, "wb+");
if(!fp) {
http_error(HTTP500, "Open File Error.");
return;
}
flock(fileno(fp), LOCK_EX);
static void return_count(FILE* fp, char* name, char* theme) {
int ch, exist = 0, user_exist = 0;
char buf[sizeof(SIMPLE_PB)+sizeof(counter_t)];
while(has_next(fp, ch)) {
@ -118,7 +113,6 @@ static void return_count(char* name, char* theme) {
http_error(HTTP500, "Add User Error.");
return;
}
fclose(fp);
char cntstrbuf[11];
sprintf(cntstrbuf, "%010u", d->count);
char* cntstr = cntstrbuf;
@ -127,26 +121,26 @@ static void return_count(char* name, char* theme) {
break;
}
int isbig = 0;
char** theme_type = mb;
uint16_t* len_type = mbl;
char** theme_type = (char**)mb;
uint16_t* len_type = (uint16_t*)mbl;
if(theme) {
set_type("mbh", mbh, mbhl) else
set_type("r34", r34, r34l) else
set_type("gb", gb, gbl) else
set_type("gbh", gbh, gbhl)
isbig = (theme_type == gb || theme_type == gbh);
isbig = (theme_type == (char**)gb || theme_type == (char**)gbh);
}
int w, h;
char *head;
if(isbig) {
w = W_BIG;
h = H_BIG;
head = svg_big;
head = (char*)svg_big;
}
else {
w = W_SMALL;
h = H_SMALL;
head = svg_small;
head = (char*)svg_small;
}
headers(get_content_len(isbig, len_type, cntstr), image/svg+xml);
printf(head, w*(10+cntstrbuf-cntstr));
@ -159,38 +153,28 @@ static void return_count(char* name, char* theme) {
printf(svg_tail);
return;
}
fclose(fp);
http_error(HTTP404, "No Such User.");
}
static int name_exist(char* name) {
FILE* fp = fopen(datfile, "rb+");
if(!fp) fp = fopen(datfile, "wb+");
if(fp) {
http_error(HTTP500, "Open File Error.");
exit(EXIT_FAILURE);
}
static int name_exist(FILE* fp, char* name) {
int ch, exist = 0;
char buf[sizeof(SIMPLE_PB)+sizeof(counter_t)];
flock(fileno(fp), LOCK_EX);
while(has_next(fp, ch)) {
SIMPLE_PB *spb = read_pb_into(fp, (SIMPLE_PB*)buf);
counter_t *d = (counter_t *)spb->target;
if (!strcmp(name, d->name)) {
fclose(fp);
return 1;
}
if (!strcmp(name, d->name)) return 1;
}
fclose(fp);
return 0;
}
#define create_or_open(fp, filename) ((fp = fopen(filename, "rb+"))?(fp):(fp = fopen(filename, "wb+")))
#define QS (argv[2])
// Usage: cmoe method query_string
int main(int argc, char **argv) {
if(argc != 3) {
http_error(HTTP500, "Argument Count Error.");
return 1;
return -1;
}
char* str = getenv("DATFILE");
if(str != NULL) datfile = str;
@ -217,7 +201,16 @@ int main(int argc, char **argv) {
}
char* reg = strstr(QS, "reg=");
if (!reg) {
return_count(name, theme);
if(!create_or_open(fp, datfile)) {
http_error(HTTP500, "Open File Error.");
return -2;
}
if(flock(fileno(fp), LOCK_EX)) {
http_error(HTTP500, "Lock File Error.");
return -3;
}
return_count(fp, name, theme);
fclose(fp); fp = NULL;
return 0;
}
reg = get_arg(reg + 4);
@ -229,19 +222,36 @@ int main(int argc, char **argv) {
http_error(HTTP400, "Token Error.");
return 6;
}
if(name_exist(name)) {
if(!create_or_open(fp, datfile)) {
http_error(HTTP500, "Open File Error.");
return -4;
}
if(flock(fileno(fp), LOCK_EX)) {
http_error(HTTP500, "Lock File Error.");
return -5;
}
if(name_exist(fp, name)) {
fclose(fp); fp = NULL;
http_error(HTTP400, "Name Exist.");
return 7;
}
FILE* fp = fopen(datfile, "ab+");
fclose(fp); fp = NULL;
fp = fopen(datfile, "ab+");
if (!fp) {
http_error(HTTP500, "Open File Error.");
return 8;
return -6;
}
if(flock(fileno(fp), LOCK_EX)) {
http_error(HTTP500, "Lock File Error.");
return -7;
}
flock(fileno(fp), LOCK_EX);
add_user(name, 0, fp);
fclose(fp);
fclose(fp); fp = NULL;
char* msg = "<P>Success.\r\n";
headers(strlen(msg), text/html);
return write(1, msg, strlen(msg)) <= 0;
}
static void __attribute__((destructor)) defer_close_fp() {
if(fp) fclose(fp);
}