void h2o_set_header_by_str(h2o_mempool_t *pool, h2o_headers_t *headers, const char *name, size_t name_len, int maybe_token, const char *value, size_t value_len, int overwrite_if_exists)
{
ssize_t cursor;
if (maybe_token) {
const h2o_token_t *token = h2o_lookup_token(name, name_len);
if (token != NULL) {
h2o_set_header(pool, headers, token ,value, value_len, overwrite_if_exists);
return;
}
}
cursor = h2o_find_header_by_str(headers, name, name_len, -1);
if (cursor != -1) {
if (overwrite_if_exists) {
h2o_buf_t *slot = &headers->entries[cursor].value;
slot->base = (char*)value;
slot->len = value_len;
}
} else {
h2o_buf_t *name_buf = h2o_mempool_alloc(pool, sizeof(h2o_buf_t));
name_buf->base = (char*)name;
name_buf->len = name_len;
add_header(pool, headers, name_buf, value, value_len);
}
}
int h2o_is_websocket_handshake(h2o_req_t *req, const char **ws_client_key)
{
ssize_t key_header_index;
*ws_client_key = NULL;
/* method */
if (h2o_memis(req->input.method.base, req->input.method.len, H2O_STRLIT("GET"))) {
/* ok */
} else {
return 0;
}
/* upgrade header */
if (req->upgrade.base != NULL && h2o_lcstris(req->upgrade.base, req->upgrade.len, H2O_STRLIT("websocket"))) {
/* ok */
} else {
return 0;
}
/* sec-websocket-key header */
if ((key_header_index = h2o_find_header_by_str(&req->headers, H2O_STRLIT("sec-websocket-key"), -1)) != -1) {
if (req->headers.entries[key_header_index].value.len != 24) {
return -1;
}
} else {
return 0;
}
*ws_client_key = req->headers.entries[key_header_index].value.base;
return 0;
}
ssize_t h2o_set_header_by_str(h2o_mem_pool_t *pool, h2o_headers_t *headers, const char *name, size_t name_len, int maybe_token,
const char *value, size_t value_len, int overwrite_if_exists)
{
ssize_t cursor;
if (maybe_token) {
const h2o_token_t *token = h2o_lookup_token(name, name_len);
if (token != NULL) {
return h2o_set_header(pool, headers, token, value, value_len, overwrite_if_exists);
}
}
cursor = h2o_find_header_by_str(headers, name, name_len, -1);
if (cursor != -1) {
if (overwrite_if_exists) {
h2o_iovec_t *slot = &headers->entries[cursor].value;
slot->base = (char *)value;
slot->len = value_len;
}
return cursor;
} else {
h2o_iovec_t *name_buf = h2o_mem_alloc_pool(pool, *name_buf, 1);
name_buf->base = (char *)name;
name_buf->len = name_len;
return add_header(pool, headers, name_buf, NULL, value, value_len, (h2o_header_flags_t){0});
}
}
static h2o_iovec_t __get_if_match_header_value(const h2o_req_t* req,
const kstr_t* key)
{
ssize_t header =
h2o_find_header(&req->headers, H2O_TOKEN_IF_MATCH, SIZE_MAX);
if (-1 == header)
return (h2o_iovec_t){.base = NULL, .len = 0 };
return req->headers.entries[header].value;
}
/**
* @return 1 if the client wants an ETag; otherwise 0
*/
static int __prefers_etag(const h2o_req_t* req)
{
ssize_t header = h2o_find_header_by_str(
&req->headers, "prefers", strlen("prefers"), SIZE_MAX);
if (-1 == header)
return 0;
if (!strncmp(req->headers.entries[header].value.base, "ETag",
min(strlen("ETag"), req->headers.entries[header].value.len)))
return 1;
return 0;
}
static h2o_header_t *find_header(h2o_headers_t *headers, h2o_headers_command_t *cmd)
{
size_t index;
if (h2o_iovec_is_token(cmd->name)) {
index = h2o_find_header(headers, (void *)cmd->name, SIZE_MAX);
} else {
index = h2o_find_header_by_str(headers, cmd->name->base, cmd->name->len, SIZE_MAX);
}
if (index == SIZE_MAX)
return NULL;
return headers->entries + index;
}
static mrb_value h2o_mrb_get_request_headers_out(mrb_state *mrb, mrb_value self)
{
h2o_mruby_internal_context_t *mruby_ctx = (h2o_mruby_internal_context_t *)mrb->ud;
mrb_value key;
ssize_t index;
h2o_header_t *h;
mrb_get_args(mrb, "o", &key);
key = mrb_funcall(mrb, key, "downcase", 0);
index = h2o_find_header_by_str(&mruby_ctx->req->res.headers, RSTRING_PTR(key), RSTRING_LEN(key), -1);
if (index == -1)
return mrb_nil_value();
h = mruby_ctx->req->res.headers.entries + index;
return mrb_str_new(mrb, h->value.base, h->value.len);
}
static void check(const h2o_url_scheme_t *scheme, const char *host, const char *expected)
{
h2o_loopback_conn_t *conn = h2o_loopback_create(&ctx, ctx.globalconf->hosts);
conn->req.input.method = h2o_iovec_init(H2O_STRLIT("GET"));
conn->req.input.scheme = scheme;
conn->req.input.authority = h2o_iovec_init(host, strlen(host));
conn->req.input.path = h2o_iovec_init(H2O_STRLIT("/"));
h2o_loopback_run_loop(conn);
ok(conn->req.res.status == 200);
size_t index = h2o_find_header_by_str(&conn->req.res.headers, H2O_STRLIT("x-authority"), SIZE_MAX);
ok(index != SIZE_MAX);
if (index != SIZE_MAX) {
ok(h2o_memis(conn->req.res.headers.entries[index].value.base, conn->req.res.headers.entries[index].value.len, expected, strlen(expected)));
}
h2o_loopback_destroy(conn);
}
static void log_access(h2o_logger_t *_self, h2o_req_t *req)
{
struct st_h2o_access_logger_t *self = (struct st_h2o_access_logger_t *)_self;
h2o_access_log_filehandle_t *fh = self->fh;
char *line, *pos, *line_end;
size_t element_index;
/* note: LOG_ALLOCA_SIZE should be much greater than NI_MAXHOST to avoid unnecessary reallocations */
line = alloca(LOG_ALLOCA_SIZE);
pos = line;
line_end = line + LOG_ALLOCA_SIZE;
for (element_index = 0; element_index != fh->num_elements; ++element_index) {
struct log_element_t *element = fh->elements + element_index;
/* reserve capacity + suffix.len */
#define RESERVE(capacity) \
do { \
if ((capacity) + element->suffix.len > line_end - pos) { \
size_t off = pos - line; \
line = expand_line_buf(line, line_end - line, off + (capacity) + element->suffix.len); \
pos = line + off; \
} \
} while (0)
switch (element->type) {
case ELEMENT_TYPE_EMPTY:
RESERVE(0);
break;
case ELEMENT_TYPE_BYTES_SENT: /* %b */
RESERVE(sizeof("18446744073709551615") - 1);
pos += sprintf(pos, "%llu", (unsigned long long)req->bytes_sent);
break;
case ELEMENT_TYPE_PROTOCOL: /* %H */
RESERVE(sizeof("HTTP/1.1"));
pos += h2o_stringify_protocol_version(pos, req->version);
break;
case ELEMENT_TYPE_REMOTE_ADDR: /* %h */ {
struct sockaddr_storage ss;
socklen_t sslen;
if ((sslen = req->conn->get_peername(req->conn, (void *)&ss)) != 0) {
RESERVE(NI_MAXHOST);
size_t l = h2o_socket_getnumerichost((void *)&ss, sslen, pos);
if (l != SIZE_MAX)
pos += l;
else
*pos++ = '-';
} else {
RESERVE(1);
*pos++ = '-';
}
} break;
case ELEMENT_TYPE_METHOD: /* %m */
RESERVE(req->input.method.len * 4);
pos = append_unsafe_string(pos, req->input.method.base, req->input.method.len);
break;
case ELEMENT_TYPE_QUERY: /* %q */
if (req->input.query_at != SIZE_MAX) {
size_t len = req->input.path.len - req->input.query_at;
RESERVE(len * 4);
pos = append_unsafe_string(pos, req->input.path.base + req->input.query_at, len);
}
break;
case ELEMENT_TYPE_REQUEST_LINE: /* %r */
RESERVE((req->input.method.len + req->input.path.len) * 4 + sizeof(" HTTP/1.1"));
pos = append_unsafe_string(pos, req->input.method.base, req->input.method.len);
*pos++ = ' ';
pos = append_unsafe_string(pos, req->input.path.base, req->input.path.len);
*pos++ = ' ';
pos += h2o_stringify_protocol_version(pos, req->version);
break;
case ELEMENT_TYPE_STATUS: /* %s */
RESERVE(sizeof("2147483647") - 1);
pos += sprintf(pos, "%d", req->res.status);
break;
case ELEMENT_TYPE_TIMESTAMP: /* %t */
RESERVE(H2O_TIMESTR_LOG_LEN + 2);
*pos++ = '[';
pos = append_safe_string(pos, req->processed_at.str->log, H2O_TIMESTR_LOG_LEN);
*pos++ = ']';
break;
case ELEMENT_TYPE_URL_PATH: /* %U */
{
size_t path_len = req->input.query_at == SIZE_MAX ? req->input.path.len : req->input.query_at;
RESERVE(req->input.scheme->name.len + (sizeof("://") - 1) + (req->input.authority.len + path_len) * 4);
pos = append_safe_string(pos, req->input.scheme->name.base, req->input.scheme->name.len);
pos = append_safe_string(pos, H2O_STRLIT("://"));
pos = append_unsafe_string(pos, req->input.authority.base, req->input.authority.len);
pos = append_unsafe_string(pos, req->input.path.base, path_len);
} break;
case ELEMENT_TYPE_AUTHORITY: /* %V */
RESERVE(req->input.authority.len * 4);
pos = append_unsafe_string(pos, req->input.authority.base, req->input.authority.len);
break;
case ELEMENT_TYPE_HOSTCONF: /* %v */
RESERVE(req->hostconf->authority.hostport.len * 4);
pos = append_unsafe_string(pos, req->hostconf->authority.hostport.base, req->hostconf->authority.hostport.len);
break;
case ELEMENT_TYPE_LOGNAME: /* %l */
case ELEMENT_TYPE_REMOTE_USER: /* %u */
RESERVE(1);
*pos++ = '-';
break;
#define EMIT_HEADER(headers, _index) \
do { \
ssize_t index = (_index); \
if (index != -1) { \
const h2o_header_t *header = (headers)->entries + index; \
RESERVE(header->value.len * 4); \
pos = append_unsafe_string(pos, header->value.base, header->value.len); \
} else { \
RESERVE(1); \
*pos++ = '-'; \
} \
} while (0)
case ELEMENT_TYPE_IN_HEADER_TOKEN:
EMIT_HEADER(&req->headers, h2o_find_header(&req->headers, element->data.header_token, SIZE_MAX));
break;
case ELEMENT_TYPE_IN_HEADER_STRING:
EMIT_HEADER(&req->headers, h2o_find_header_by_str(&req->headers, element->data.header_string.base,
element->data.header_string.len, SIZE_MAX));
break;
case ELEMENT_TYPE_OUT_HEADER_TOKEN:
EMIT_HEADER(&req->res.headers, h2o_find_header(&req->res.headers, element->data.header_token, SIZE_MAX));
break;
case ELEMENT_TYPE_OUT_HEADER_STRING:
EMIT_HEADER(&req->res.headers, h2o_find_header_by_str(&req->res.headers, element->data.header_string.base,
element->data.header_string.len, SIZE_MAX));
break;
#undef EMIT_HEADER
default:
assert(!"unknown type");
break;
}
#undef RESERVE
pos = append_safe_string(pos, element->suffix.base, element->suffix.len);
}
write(fh->fd, line, pos - line);
if (line_end - line != LOG_ALLOCA_SIZE)
free(line);
}