static HttpHdrExtField *
httpHdrExtFieldDoCreate(const char *name, int name_len,
const char *value, int value_len)
{
HttpHdrExtField *f = xcalloc(1, sizeof(HttpHdrExtField));
stringLimitInit(&f->name, name, name_len);
stringLimitInit(&f->value, value, value_len);
return f;
}
/* parses and inits header entry, returns new entry on success */
static HttpHeaderEntry *
httpHeaderEntryParseCreate(const char *field_start, const char *field_end)
{
HttpHeaderEntry *e;
int id;
/* note: name_start == field_start */
const char *name_end = strchr(field_start, ':');
const int name_len = name_end ? name_end - field_start : 0;
const char *value_start = field_start + name_len + 1; /* skip ':' */
/* note: value_end == field_end */
HeaderEntryParsedCount++;
/* do we have a valid field name within this field? */
if (!name_len || name_end > field_end)
return NULL;
if (name_len > 65536) {
/* String has a 64K limit */
debug(55, 1) ("WARNING: ignoring header name of %d bytes\n", name_len);
return NULL;
}
/* now we know we can parse it */
e = memAllocate(MEM_HTTP_HDR_ENTRY);
debug(55, 9) ("creating entry %p: near '%s'\n", e, getStringPrefix(field_start, field_end));
/* is it a "known" field? */
id = httpHeaderIdByName(field_start, name_len, Headers, HDR_ENUM_END);
if (id < 0)
id = HDR_OTHER;
assert_eid(id);
e->id = id;
/* set field name */
if (id == HDR_OTHER)
stringLimitInit(&e->name, field_start, name_len);
else
e->name = Headers[id].name;
/* trim field value */
while (value_start < field_end && xisspace(*value_start))
value_start++;
if (field_end - value_start > 65536) {
/* String has a 64K limit */
debug(55, 1) ("WARNING: ignoring '%s' header of %d bytes\n",
strBuf(e->name), (int) (field_end - value_start));
if (e->id == HDR_OTHER)
stringClean(&e->name);
memFree(e, MEM_HTTP_HDR_ENTRY);
return NULL;
}
/* set field value */
stringLimitInit(&e->value, value_start, field_end - value_start);
Headers[id].stat.seenCount++;
Headers[id].stat.aliveCount++;
debug(55, 9) ("created entry %p: '%s: %s'\n", e, strBuf(e->name), strBuf(e->value));
return e;
}
/**
* Parses a quoted-string field (RFC 2616 section 2.2), complains if
* something went wrong, returns non-zero on success.
* start should point at the first double-quote.
* RC TODO: This is too looose. We should honour the BNF and exclude CTL's
*/
int
httpHeaderParseQuotedString(const char *start, String * val)
{
const char *end, *pos;
stringClean(val);
if (*start != '"') {
debug(66, 2) ("failed to parse a quoted-string header field near '%s'\n", start);
return 0;
}
pos = start + 1;
while (*pos != '"') {
int quoted = (*pos == '\\');
if (quoted)
pos++;
if (!*pos) {
debug(66, 2) ("failed to parse a quoted-string header field near '%s'\n", start);
stringClean(val);
return 0;
}
end = pos + strcspn(pos + quoted, "\"\\") + quoted;
stringAppend(val, pos, end - pos);
pos = end;
}
/* Make sure it's defined even if empty "" */
if (!val->buf)
stringLimitInit(val, "", 0);
return 1;
}
static HttpHeaderEntry *
httpHeaderEntryCreate2(http_hdr_type id, String name, String value)
{
HttpHeaderEntry *e;
assert_eid(id);
e = memAllocate(MEM_HTTP_HDR_ENTRY);
e->id = id;
if (id != HDR_OTHER)
e->name = Headers[id].name;
else
stringLimitInit(&e->name, strBuf(name), strLen(name));
stringLimitInit(&e->value, strBuf(value), strLen(value));
Headers[id].stat.aliveCount++;
debug(55, 9) ("created entry %p: '%s: %s'\n", e, strBuf(e->name), strBuf(e->value));
return e;
}
/* return a string or list of entries with the same id separated by ',' and ws */
String
httpHeaderGetStrOrList(const HttpHeader * hdr, http_hdr_type id)
{
HttpHeaderEntry *e;
if (CBIT_TEST(ListHeadersMask, id))
return httpHeaderGetList(hdr, id);
if ((e = httpHeaderFindEntry(hdr, id))) {
String s;
stringLimitInit(&s, strBuf(e->value), strLen(e->value));
return s;
}
return StringNull;
}
/* sync this routine when you update HttpReply struct */
static void
httpReplyHdrCacheInit(HttpReply * rep)
{
const HttpHeader *hdr = &rep->header;
const char *str;
rep->content_length = httpHeaderGetSize(hdr, HDR_CONTENT_LENGTH);
rep->date = httpHeaderGetTime(hdr, HDR_DATE);
rep->last_modified = httpHeaderGetTime(hdr, HDR_LAST_MODIFIED);
str = httpHeaderGetStr(hdr, HDR_CONTENT_TYPE);
if (str)
stringLimitInit(&rep->content_type, str, strcspn(str, ";\t "));
else
rep->content_type = StringNull;
rep->cache_control = httpHeaderGetCc(hdr);
rep->content_range = httpHeaderGetContRange(hdr);
rep->keep_alive = httpMsgIsPersistent(rep->sline.version, &rep->header);
/* be sure to set expires after date and cache-control */
rep->expires = httpReplyHdrExpirationTime(rep);
}
/* parses and inits header entry, returns new entry on success */
static HttpHeaderEntry *
httpHeaderEntryParseCreate(const char *field_start, const char *field_end)
{
HttpHeaderEntry *e;
int id;
/* note: name_start == field_start */
const char *name_end = memchr(field_start, ':', field_end - field_start);
int name_len = name_end ? name_end - field_start : 0;
const char *value_start = field_start + name_len + 1; /* skip ':' */
/* note: value_end == field_end */
HeaderEntryParsedCount++;
/* do we have a valid field name within this field? */
if (!name_len || name_end > field_end)
return NULL;
if (name_len > 65534) {
/* String must be LESS THAN 64K and it adds a terminating NULL */
debug(55, 1) ("WARNING: ignoring header name of %d bytes\n", name_len);
return NULL;
}
if (Config.onoff.relaxed_header_parser && xisspace(field_start[name_len - 1])) {
debug(55, Config.onoff.relaxed_header_parser <= 0 ? 1 : 2)
("NOTICE: Whitespace after header name in '%s'\n", getStringPrefix(field_start, field_end));
while (name_len > 0 && xisspace(field_start[name_len - 1]))
name_len--;
if (!name_len)
return NULL;
}
/* now we know we can parse it */
e = memAllocate(MEM_HTTP_HDR_ENTRY);
debug(55, 9) ("creating entry %p: near '%s'\n", e, getStringPrefix(field_start, field_end));
/* is it a "known" field? */
id = httpHeaderIdByName(field_start, name_len, Headers, HDR_ENUM_END);
if (id < 0)
id = HDR_OTHER;
assert_eid(id);
e->id = id;
/* set field name */
if (id == HDR_OTHER)
stringLimitInit(&e->name, field_start, name_len);
else
e->name = Headers[id].name;
/* trim field value */
while (value_start < field_end && xisspace(*value_start))
value_start++;
while (value_start < field_end && xisspace(field_end[-1]))
field_end--;
if (field_end - value_start > 65534) {
/* String must be LESS THAN 64K and it adds a terminating NULL */
debug(55, 1) ("WARNING: ignoring '%s' header of %d bytes\n",
strBuf(e->name), (int) (field_end - value_start));
if (e->id == HDR_OTHER)
stringClean(&e->name);
memFree(e, MEM_HTTP_HDR_ENTRY);
return NULL;
}
/* set field value */
stringLimitInit(&e->value, value_start, field_end - value_start);
Headers[id].stat.seenCount++;
Headers[id].stat.aliveCount++;
debug(55, 9) ("created entry %p: '%s: %s'\n", e, strBuf(e->name), strBuf(e->value));
return e;
}
