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#include <magi.h>
#include <dirent.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
static int emptyurl(const char *url)
{
return !url || !*url || (url[0] == '/' && !url[1]);
}
static int equrl(const char *a, const char *b)
{
if (!a) return !b;
if (!b) return 0;
while (*a && *b && *a == *b) {
++a;
++b;
}
return emptyurl(a) && emptyurl(b);
}
static char *scopy(const char *s)
{
int len = s ? strlen(s) : 0;
char *res = malloc(len + 1);
if (s) memcpy(res, s, len);
res[len] = 0;
return res;
}
static char *scat(const char *a, const char *b)
{
int alen = a ? strlen(a) : 0;
int blen = b ? strlen(b) : 0;
char *res = malloc(alen + blen + 1);
memcpy(res, a, alen);
memcpy(res + alen, b, blen);
res[alen + blen] = 0;
return res;
}
static char *nextstyle(const char *curstyle)
{
DIR *d = opendir("/var/web/veresov.pro/public/styles");
struct dirent *de;
struct dirent *res = readdir(d);
while (res->d_name[0] == '.') res = readdir(d);
while ((de = readdir(d)) != 0) {
if (de->d_name[0] == '.') continue;
if (strcmp(de->d_name, curstyle)) {
if (de->d_name[0] != '.') res = de;
else break;
}
}
closedir(d);
return scopy(res->d_name);
}
static void switchstyle(const char *style, const char *script, const char *r)
{
struct magi_cookie stl = { 0, 0, 0, 0, 0 };
struct magi_response res;
magi_response_init(&res);
stl.name = scopy("style");
stl.data = nextstyle(style);
stl.path = scopy(script);
magi_response_cookie_complex(&res, &stl);
if (r) {
magi_response_status(&res, 302, "Moved Temporarily");
magi_response_header(&res, "Location", r);
}
magi_response_send(&res);
magi_response_free(&res);
free(stl.name);
free(stl.data);
free(stl.path);
}
static void getstyle(const char *style, const char *script)
{
char c;
char *p = scat("/var/web/veresov.pro/public/styles/", style);
FILE *f = fopen(p, "r");
struct magi_cookie stl = { 0, 0, 0, 0, 0 };
struct magi_response res;
magi_response_init(&res);
stl.name = scopy("style");
stl.data = scopy(style);
stl.path = scopy(script);
magi_response_cookie_complex(&res, &stl);
magi_response_content_type(&res, "text/css");
magi_response_send(&res);
magi_response_free(&res);
while (fread(&c, 1, 1, f) == 1) {
fwrite(&c, 1, 1, stdout);
}
fclose(f);
free(p);
free(stl.name);
free(stl.data);
free(stl.path);
}
static void response(struct magi_request *req)
{
const char *curstyle = magi_request_cookie(req, "style");
if (!curstyle) curstyle = "default.css";
if (equrl(req->path, "/switch")) {
switchstyle(curstyle, req->script, magi_request_param(req, "r"));
} else if (equrl(req->path, "/style.css")) {
getstyle(curstyle, req->script);
}
}
int main()
{
struct magi_request request;
magi_request_init(&request);
if (magi_parse(&request)) {
response(&request);
} else {
magi_error_response(request.error);
}
magi_request_free(&request);
return 0;
}
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