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#include "uwsgi.h"
/*
cookie management functions (mainly used by the internal routing subsystem)
*/
static char *check_cookie(char *cookie, uint16_t cookie_len, char *key, uint16_t keylen, uint16_t *vallen) {
uint16_t orig_cookie_len = cookie_len-1;
// first lstrip white spaces
char *ptr = cookie;
uint16_t i;
for(i=0;i<cookie_len;i++) {
if (isspace((int)ptr[i])) {
cookie++;
cookie_len--;
}
else {
break;
}
}
// then rstrip (skipping the first char...)
for(i=orig_cookie_len;i>0;i--) {
if (isspace((int)ptr[i])) {
cookie_len--;
}
else {
break;
}
}
// now search for the first equal sign
char *equal = memchr(cookie, '=', cookie_len);
if (!equal) return NULL;
if (uwsgi_strncmp(key, keylen, cookie, equal-cookie)) {
return NULL;
}
cookie_len -= (equal-cookie)+1;
if (cookie_len == 0) return NULL;
*vallen = cookie_len;
return equal+1;
}
char *uwsgi_get_cookie(struct wsgi_request *wsgi_req, char *key, uint16_t keylen, uint16_t *vallen) {
uint16_t i;
char *cookie = wsgi_req->cookie;
uint16_t cookie_len = 0;
char *ptr = wsgi_req->cookie;
//start splitting by ;
for(i=0;i<wsgi_req->cookie_len;i++) {
if (!cookie) {
cookie = ptr + i;
}
if (ptr[i] == ';') {
char *value = check_cookie(cookie, cookie_len, key, keylen, vallen);
if (value) {
return value;
}
cookie_len = 0;
cookie = NULL;
}
else {
cookie_len++;
}
}
if (cookie_len > 0) {
char *value = check_cookie(cookie, cookie_len, key, keylen, vallen);
if (value) {
return value;
}
}
return NULL;
}
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