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LLCache: use Cache-Control parser

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This commit is contained in:
John-Mark Bell 2019-06-10 20:56:23 +00:00
parent 04b790643b
commit 047c82cfce
1 changed files with 21 additions and 51 deletions
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52
content/llcache.c
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@ -45,6 +45,7 @@
#include "utils/nsurl.h"
#include "utils/utils.h"
#include "utils/time.h"
#include "utils/http.h"
#include "netsurf/misc.h"
#include "desktop/gui_internal.h"
@ -583,59 +584,28 @@ static nserror llcache_fetch_split_header(const uint8_t *data, size_t len,
static nserror
llcache_fetch_parse_cache_control(llcache_object *object, char *value)
{
const char *start = value;
const char *comma = value;
http_cache_control *cc;
nserror error;
while (*comma != '\0') {
while (*comma != '\0' && *comma != ',') {
comma++;
error = http_parse_cache_control(value, &cc);
if (error != NSERROR_OK) {
/* Ignore parse errors */
return NSERROR_OK;
}
if ((8 < comma - start) &&
(strncasecmp(start, "no-cache", 8) == 0 ||
strncasecmp(start, "no-store", 8) == 0)) {
if (http_cache_control_no_cache(cc) ||
http_cache_control_no_store(cc)) {
/**
* \todo When we get a disk cache we should
* distinguish between these two.
*/
object->cache.no_cache = LLCACHE_VALIDATE_ALWAYS;
} else if ((7 < comma - start) &&
strncasecmp(start, "max-age", 7) == 0) {
start += 7; /* skip max-age */
/* Find '=' */
while (start < comma && *start != '=') {
start++;
}
/* Skip over '=' */
start++;
object->cache.max_age = http_cache_control_max_age(cc);
#define SKIP_ST(p) while (*p != '\0' && (*p == ' ' || *p == '\t')) p++
http_cache_control_destroy(cc);
if (start < comma) {
/* Skip whitespace */
SKIP_ST(start);
}
if (start < comma) {
object->cache.max_age = atoi(start);
}
}
if (*comma != '\0') {
/* Skip past comma */
comma++;
/* Skip whitespace */
SKIP_ST(comma);
}
#undef SKIP_ST
/* Set start for next token */
start = comma;
}
return NSERROR_OK;
}