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}
ap_assert(fifo->count < fifo->nelems);
fifo->elems[inth_index(fifo, fifo->count)] = id;
++fifo->count;
if (fifo->count == 1) {
apr_thread_cond_broadcast(fifo->not_empty);
}
return APR_SUCCESS;
}
static apr_status_t ififo_push(h2_ififo *fifo, int id, int block)
{
apr_status_t rv;
if (fifo->aborted) {
return APR_EOF;
}
if ((rv = apr_thread_mutex_lock(fifo->lock)) == APR_SUCCESS) {
rv = ififo_push_int(fifo, id, block);
apr_thread_mutex_unlock(fifo->lock);
}
return rv;
}
apr_status_t h2_ififo_push(h2_ififo *fifo, int id)
{
return ififo_push(fifo, id, 1);
}
apr_status_t h2_ififo_try_push(h2_ififo *fifo, int id)
{
return ififo_push(fifo, id, 0);
}
static apr_status_t ipull_head(h2_ififo *fifo, int *pi, int block)
{
apr_status_t rv;
if ((rv = icheck_not_empty(fifo, block)) != APR_SUCCESS) {
*pi = 0;
return rv;
}
*pi = fifo->elems[fifo->head];
--fifo->count;
if (fifo->count > 0) {
fifo->head = inth_index(fifo, 1);
if (fifo->count+1 == fifo->nelems) {
apr_thread_cond_broadcast(fifo->not_full);
}
}
return APR_SUCCESS;
}
static apr_status_t ififo_pull(h2_ififo *fifo, int *pi, int block)
{
apr_status_t rv;
if (fifo->aborted) {
return APR_EOF;
}
if ((rv = apr_thread_mutex_lock(fifo->lock)) == APR_SUCCESS) {
rv = ipull_head(fifo, pi, block);
apr_thread_mutex_unlock(fifo->lock);
}
return rv;
}
apr_status_t h2_ififo_pull(h2_ififo *fifo, int *pi)
{
return ififo_pull(fifo, pi, 1);
}
apr_status_t h2_ififo_try_pull(h2_ififo *fifo, int *pi)
{
return ififo_pull(fifo, pi, 0);
}
static apr_status_t ififo_peek(h2_ififo *fifo, h2_ififo_peek_fn *fn, void *ctx, int block)
{
apr_status_t rv;
int id;
if (fifo->aborted) {
return APR_EOF;
}
if (APR_SUCCESS == (rv = apr_thread_mutex_lock(fifo->lock))) {
if (APR_SUCCESS == (rv = ipull_head(fifo, &id, block))) {
switch (fn(id, ctx)) {
case H2_FIFO_OP_PULL:
break;
case H2_FIFO_OP_REPUSH:
rv = ififo_push_int(fifo, id, block);
break;
}
}
apr_thread_mutex_unlock(fifo->lock);
}
return rv;
}
apr_status_t h2_ififo_peek(h2_ififo *fifo, h2_ififo_peek_fn *fn, void *ctx)
{
return ififo_peek(fifo, fn, ctx, 1);
}
apr_status_t h2_ififo_try_peek(h2_ififo *fifo, h2_ififo_peek_fn *fn, void *ctx)
{
return ififo_peek(fifo, fn, ctx, 0);
}
apr_status_t h2_ififo_remove(h2_ififo *fifo, int id)
{
apr_status_t rv;
if (fifo->aborted) {
return APR_EOF;
}
if ((rv = apr_thread_mutex_lock(fifo->lock)) == APR_SUCCESS) {
int i, rc;
int e;
rc = 0;
for (i = 0; i < fifo->count; ++i) {
e = fifo->elems[inth_index(fifo, i)];
if (e == id) {
++rc;
}
else if (rc) {
fifo->elems[inth_index(fifo, i-rc)] = e;
}
}
if (rc) {
fifo->count -= rc;
if (fifo->count + rc == fifo->nelems) {
apr_thread_cond_broadcast(fifo->not_full);
}
rv = APR_SUCCESS;
}
else {
rv = APR_EAGAIN;
}
apr_thread_mutex_unlock(fifo->lock);
}
return rv;
}
/*******************************************************************************
* h2_util for apt_table_t
******************************************************************************/
typedef struct {
apr_size_t bytes;
apr_size_t pair_extra;
} table_bytes_ctx;
static int count_bytes(void *x, const char *key, const char *value)
{
table_bytes_ctx *ctx = x;
if (key) {
ctx->bytes += strlen(key);
}
if (value) {
ctx->bytes += strlen(value);
}
ctx->bytes += ctx->pair_extra;
return 1;
}
apr_size_t h2_util_table_bytes(apr_table_t *t, apr_size_t pair_extra)
{
table_bytes_ctx ctx;
ctx.bytes = 0;
ctx.pair_extra = pair_extra;
apr_table_do(count_bytes, &ctx, t, NULL);
return ctx.bytes;
}
/*******************************************************************************
* h2_util for bucket brigades
******************************************************************************/
static apr_status_t last_not_included(apr_bucket_brigade *bb,
apr_off_t maxlen,
int same_alloc,
apr_size_t *pfile_buckets_allowed,
apr_bucket **pend)
{
apr_bucket *b;
apr_status_t status = APR_SUCCESS;
int files_allowed = pfile_buckets_allowed? (int)*pfile_buckets_allowed : 0;
if (maxlen >= 0) {
/* Find the bucket, up to which we reach maxlen/mem bytes */
for (b = APR_BRIGADE_FIRST(bb);
(b != APR_BRIGADE_SENTINEL(bb));
b = APR_BUCKET_NEXT(b)) {
if (APR_BUCKET_IS_METADATA(b)) {
/* included */
}
else {
if (b->length == ((apr_size_t)-1)) {
const char *ign;
apr_size_t ilen;
status = apr_bucket_read(b, &ign, &ilen, APR_BLOCK_READ);
if (status != APR_SUCCESS) {
return status;
}
}
if (maxlen == 0 && b->length > 0) {
*pend = b;
return status;
}
if (same_alloc && APR_BUCKET_IS_FILE(b)) {
/* we like it move it, always */
}
else if (files_allowed > 0 && APR_BUCKET_IS_FILE(b)) {
/* this has no memory footprint really unless
* it is read, disregard it in length count,
* unless we do not move the file buckets */
--files_allowed;
}
else if (maxlen < (apr_off_t)b->length) {
apr_bucket_split(b, (apr_size_t)maxlen);
maxlen = 0;
}
else {
maxlen -= b->length;
}
}
}
}
*pend = APR_BRIGADE_SENTINEL(bb);
return status;
}
apr_status_t h2_brigade_concat_length(apr_bucket_brigade *dest,
apr_bucket_brigade *src,
apr_off_t length)
{
apr_bucket *b;
apr_off_t remain = length;
apr_status_t status = APR_SUCCESS;
while (!APR_BRIGADE_EMPTY(src)) {
b = APR_BRIGADE_FIRST(src);
if (APR_BUCKET_IS_METADATA(b)) {
APR_BUCKET_REMOVE(b);
APR_BRIGADE_INSERT_TAIL(dest, b);
}
else {
if (remain == b->length) {
/* fall through */
}
else if (remain <= 0) {
return status;
}
else {
if (b->length == ((apr_size_t)-1)) {
const char *ign;
apr_size_t ilen;
status = apr_bucket_read(b, &ign, &ilen, APR_BLOCK_READ);
if (status != APR_SUCCESS) {
return status;
}
}
if (remain < b->length) {
apr_bucket_split(b, remain);
}
}
APR_BUCKET_REMOVE(b);
APR_BRIGADE_INSERT_TAIL(dest, b);
remain -= b->length;
}
}
return status;
}
apr_status_t h2_brigade_copy_length(apr_bucket_brigade *dest,
apr_bucket_brigade *src,
apr_off_t length)
{
apr_bucket *b, *next;
apr_off_t remain = length;
apr_status_t status = APR_SUCCESS;
for (b = APR_BRIGADE_FIRST(src);
b != APR_BRIGADE_SENTINEL(src);
b = next) {
next = APR_BUCKET_NEXT(b);
if (APR_BUCKET_IS_METADATA(b)) {
/* fall through */
}
else {
if (remain == b->length) {
/* fall through */
}
else if (remain <= 0) {
return status;
}
else {
if (b->length == ((apr_size_t)-1)) {
const char *ign;
apr_size_t ilen;
status = apr_bucket_read(b, &ign, &ilen, APR_BLOCK_READ);
if (status != APR_SUCCESS) {
return status;
}
}
if (remain < b->length) {
apr_bucket_split(b, remain);
}
}
}
status = apr_bucket_copy(b, &b);
if (status != APR_SUCCESS) {
return status;
}
APR_BRIGADE_INSERT_TAIL(dest, b);
remain -= b->length;
}
return status;
}
int h2_util_has_eos(apr_bucket_brigade *bb, apr_off_t len)
{
apr_bucket *b, *end;
apr_status_t status = last_not_included(bb, len, 0, 0, &end);
if (status != APR_SUCCESS) {
return status;
}
for (b = APR_BRIGADE_FIRST(bb);
b != APR_BRIGADE_SENTINEL(bb) && b != end;
b = APR_BUCKET_NEXT(b))
{
if (APR_BUCKET_IS_EOS(b)) {
return 1;
}
}
return 0;
}
apr_status_t h2_util_bb_avail(apr_bucket_brigade *bb,
apr_off_t *plen, int *peos)
{
apr_status_t status;
apr_off_t blen = 0;
/* test read to determine available length */
status = apr_brigade_length(bb, 1, &blen);
if (status != APR_SUCCESS) {
return status;
}
else if (blen == 0) {
/* brigade without data, does it have an EOS bucket somwhere? */
*plen = 0;
*peos = h2_util_has_eos(bb, -1);
}
else {
/* data in the brigade, limit the length returned. Check for EOS
* bucket only if we indicate data. This is required since plen == 0
* means "the whole brigade" for h2_util_hash_eos()
*/
if (blen < *plen || *plen < 0) {
*plen = blen;
}
*peos = h2_util_has_eos(bb, *plen);
}
return APR_SUCCESS;
}
apr_status_t h2_util_bb_readx(apr_bucket_brigade *bb,
h2_util_pass_cb *cb, void *ctx,
apr_off_t *plen, int *peos)
{
apr_status_t status = APR_SUCCESS;
int consume = (cb != NULL);
apr_off_t written = 0;
apr_off_t avail = *plen;
apr_bucket *next, *b;
/* Pass data in our brigade through the callback until the length
* is satisfied or we encounter an EOS.
*/
*peos = 0;
for (b = APR_BRIGADE_FIRST(bb);
(status == APR_SUCCESS) && (b != APR_BRIGADE_SENTINEL(bb));
b = next) {
if (APR_BUCKET_IS_METADATA(b)) {
if (APR_BUCKET_IS_EOS(b)) {
*peos = 1;
}
else {
/* ignore */
}
}
else if (avail <= 0) {
break;
}
else {
const char *data = NULL;
apr_size_t data_len;
if (b->length == ((apr_size_t)-1)) {
/* read to determine length */
status = apr_bucket_read(b, &data, &data_len, APR_NONBLOCK_READ);
}
else {
data_len = b->length;
}
if (data_len > avail) {
apr_bucket_split(b, avail);
data_len = (apr_size_t)avail;
}
if (consume) {
if (!data) {
status = apr_bucket_read(b, &data, &data_len,
APR_NONBLOCK_READ);
}
if (status == APR_SUCCESS) {
status = cb(ctx, data, data_len);
}
}
else {
data_len = b->length;
}
avail -= data_len;
written += data_len;
}
next = APR_BUCKET_NEXT(b);
if (consume) {
apr_bucket_delete(b);
}
}
*plen = written;
if (status == APR_SUCCESS && !*peos && !*plen) {
return APR_EAGAIN;
}
return status;
}
apr_size_t h2_util_bucket_print(char *buffer, apr_size_t bmax,
apr_bucket *b, const char *sep)
{
apr_size_t off = 0;
if (sep && *sep) {
off += apr_snprintf(buffer+off, bmax-off, "%s", sep);
}
if (bmax <= off) {
return off;
}
else if (APR_BUCKET_IS_METADATA(b)) {
off += apr_snprintf(buffer+off, bmax-off, "%s", b->type->name);
}
else if (bmax > off) {
off += apr_snprintf(buffer+off, bmax-off, "%s[%ld]",
b->type->name,
(long)(b->length == ((apr_size_t)-1)?
-1 : b->length));
}
return off;
}
apr_size_t h2_util_bb_print(char *buffer, apr_size_t bmax,
const char *tag, const char *sep,
apr_bucket_brigade *bb)
{
apr_size_t off = 0;
const char *sp = "";
apr_bucket *b;
if (bmax > 1) {
if (bb) {
memset(buffer, 0, bmax--);
off += apr_snprintf(buffer+off, bmax-off, "%s(", tag);
for (b = APR_BRIGADE_FIRST(bb);
(bmax > off) && (b != APR_BRIGADE_SENTINEL(bb));
b = APR_BUCKET_NEXT(b)) {
off += h2_util_bucket_print(buffer+off, bmax-off, b, sp);
sp = " ";
}
if (bmax > off) {
off += apr_snprintf(buffer+off, bmax-off, ")%s", sep);
}
}
else {
off += apr_snprintf(buffer+off, bmax-off, "%s(null)%s", tag, sep);
}
}
return off;
}
apr_status_t h2_append_brigade(apr_bucket_brigade *to,
apr_bucket_brigade *from,
apr_off_t *plen,
int *peos,
h2_bucket_gate *should_append)
{
apr_bucket *e;
apr_off_t len = 0, remain = *plen;
apr_status_t rv;
*peos = 0;
while (!APR_BRIGADE_EMPTY(from)) {
e = APR_BRIGADE_FIRST(from);
if (!should_append(e)) {
goto leave;
}
else if (APR_BUCKET_IS_METADATA(e)) {
if (APR_BUCKET_IS_EOS(e)) {
*peos = 1;
apr_bucket_delete(e);
continue;
}
}
else {
if (remain > 0 && e->length == ((apr_size_t)-1)) {
const char *ign;
apr_size_t ilen;
rv = apr_bucket_read(e, &ign, &ilen, APR_BLOCK_READ);
if (rv != APR_SUCCESS) {
return rv;
}
}
if (remain < e->length) {
if (remain <= 0) {
goto leave;
}
apr_bucket_split(e, (apr_size_t)remain);
}
}
APR_BUCKET_REMOVE(e);
APR_BRIGADE_INSERT_TAIL(to, e);
len += e->length;
remain -= e->length;
}
leave:
*plen = len;
return APR_SUCCESS;
}
apr_off_t h2_brigade_mem_size(apr_bucket_brigade *bb)
{
apr_bucket *b;
apr_off_t total = 0;
for (b = APR_BRIGADE_FIRST(bb);
b != APR_BRIGADE_SENTINEL(bb);
b = APR_BUCKET_NEXT(b))
{
total += sizeof(*b);
if (b->length > 0) {
if (APR_BUCKET_IS_HEAP(b)
|| APR_BUCKET_IS_POOL(b)) {
total += b->length;
}
}
}
return total;
}
/*******************************************************************************
* h2_ngheader
******************************************************************************/
int h2_util_ignore_header(const char *name)
{
/* never forward, ch. 8.1.2.2 */
return (H2_HD_MATCH_LIT_CS("connection", name)
|| H2_HD_MATCH_LIT_CS("proxy-connection", name)
|| H2_HD_MATCH_LIT_CS("upgrade", name)
|| H2_HD_MATCH_LIT_CS("keep-alive", name)
|| H2_HD_MATCH_LIT_CS("transfer-encoding", name));
}
static int count_header(void *ctx, const char *key, const char *value)
{
if (!h2_util_ignore_header(key)) {
(*((size_t*)ctx))++;
}
return 1;
}
static const char *inv_field_name_chr(const char *token)
{
const char *p = ap_scan_http_token(token);
if (p == token && *p == ':') {
p = ap_scan_http_token(++p);
}
return (p && *p)? p : NULL;
}
static const char *inv_field_value_chr(const char *token)
{
const char *p = ap_scan_http_field_content(token);
return (p && *p)? p : NULL;
}
typedef struct ngh_ctx {
apr_pool_t *p;
int unsafe;
h2_ngheader *ngh;
apr_status_t status;
} ngh_ctx;
static int add_header(ngh_ctx *ctx, const char *key, const char *value)
{
nghttp2_nv *nv = &(ctx->ngh)->nv[(ctx->ngh)->nvlen++];
const char *p;
if (!ctx->unsafe) {
if ((p = inv_field_name_chr(key))) {
ap_log_perror(APLOG_MARK, APLOG_TRACE1, APR_EINVAL, ctx->p,
"h2_request: head field '%s: %s' has invalid char %s",
key, value, p);
ctx->status = APR_EINVAL;
return 0;
}
if ((p = inv_field_value_chr(value))) {
ap_log_perror(APLOG_MARK, APLOG_TRACE1, APR_EINVAL, ctx->p,
"h2_request: head field '%s: %s' has invalid char %s",
key, value, p);
ctx->status = APR_EINVAL;
return 0;
}
}
nv->name = (uint8_t*)key;
nv->namelen = strlen(key);
nv->value = (uint8_t*)value;
nv->valuelen = strlen(value);
return 1;
}
static int add_table_header(void *ctx, const char *key, const char *value)
{
if (!h2_util_ignore_header(key)) {
add_header(ctx, key, value);
}
return 1;
}
static apr_status_t ngheader_create(h2_ngheader **ph, apr_pool_t *p,
int unsafe, size_t key_count,
const char *keys[], const char *values[],
apr_table_t *headers)
{
ngh_ctx ctx;
size_t n, i;
ctx.p = p;
ctx.unsafe = unsafe;
n = key_count;
apr_table_do(count_header, &n, headers, NULL);
*ph = ctx.ngh = apr_pcalloc(p, sizeof(h2_ngheader));
if (!ctx.ngh) {
return APR_ENOMEM;
}
ctx.ngh->nv = apr_pcalloc(p, n * sizeof(nghttp2_nv));
if (!ctx.ngh->nv) {
return APR_ENOMEM;
}
ctx.status = APR_SUCCESS;
for (i = 0; i < key_count; ++i) {
if (!add_header(&ctx, keys[i], values[i])) {
return ctx.status;
}
}
apr_table_do(add_table_header, &ctx, headers, NULL);
return ctx.status;
}
static int is_unsafe(h2_headers *h)
{
const char *v = apr_table_get(h->notes, H2_HDR_CONFORMANCE);
return (v && !strcmp(v, H2_HDR_CONFORMANCE_UNSAFE));
}
apr_status_t h2_res_create_ngtrailer(h2_ngheader **ph, apr_pool_t *p,
h2_headers *headers)
{
return ngheader_create(ph, p, is_unsafe(headers),
0, NULL, NULL, headers->headers);
}
apr_status_t h2_res_create_ngheader(h2_ngheader **ph, apr_pool_t *p,
h2_headers *headers)
{
const char *keys[] = {
":status"
};
const char *values[] = {
apr_psprintf(p, "%d", headers->status)
};
return ngheader_create(ph, p, is_unsafe(headers),
H2_ALEN(keys), keys, values, headers->headers);
}
apr_status_t h2_req_create_ngheader(h2_ngheader **ph, apr_pool_t *p,
const struct h2_request *req)
{
const char *keys[] = {
":scheme",
":authority",
":path",
":method",
};
const char *values[] = {
req->scheme,
req->authority,
req->path,
req->method,
};
ap_assert(req->scheme);
ap_assert(req->authority);
ap_assert(req->path);
ap_assert(req->method);
return ngheader_create(ph, p, 0, H2_ALEN(keys), keys, values, req->headers);
}
/*******************************************************************************
* header HTTP/1 <-> HTTP/2 conversions
******************************************************************************/
typedef struct {
const char *name;
size_t len;
} literal;
#define H2_DEF_LITERAL(n) { (n), (sizeof(n)-1) }
#define H2_LIT_ARGS(a) (a),H2_ALEN(a)
static literal IgnoredRequestHeaders[] = {
H2_DEF_LITERAL("upgrade"),
H2_DEF_LITERAL("connection"),
H2_DEF_LITERAL("keep-alive"),
H2_DEF_LITERAL("http2-settings"),
H2_DEF_LITERAL("proxy-connection"),
H2_DEF_LITERAL("transfer-encoding"),
};
static literal IgnoredRequestTrailers[] = { /* Ignore, see rfc7230, ch. 4.1.2 */
H2_DEF_LITERAL("te"),
H2_DEF_LITERAL("host"),
H2_DEF_LITERAL("range"),
H2_DEF_LITERAL("cookie"),
H2_DEF_LITERAL("expect"),
H2_DEF_LITERAL("pragma"),
H2_DEF_LITERAL("max-forwards"),
H2_DEF_LITERAL("cache-control"),
H2_DEF_LITERAL("authorization"),
H2_DEF_LITERAL("content-length"),
H2_DEF_LITERAL("proxy-authorization"),
};
static literal IgnoredResponseTrailers[] = {
H2_DEF_LITERAL("age"),
H2_DEF_LITERAL("date"),
H2_DEF_LITERAL("vary"),
H2_DEF_LITERAL("cookie"),
H2_DEF_LITERAL("expires"),
H2_DEF_LITERAL("warning"),
H2_DEF_LITERAL("location"),
H2_DEF_LITERAL("retry-after"),
H2_DEF_LITERAL("cache-control"),
H2_DEF_LITERAL("www-authenticate"),
H2_DEF_LITERAL("proxy-authenticate"),
};
static int ignore_header(const literal *lits, size_t llen,
const char *name, size_t nlen)
{
const literal *lit;
size_t i;
for (i = 0; i < llen; ++i) {
lit = &lits[i];
if (lit->len == nlen && !apr_strnatcasecmp(lit->name, name)) {
return 1;
}
}
return 0;
}
int h2_req_ignore_header(const char *name, size_t len)
{
return ignore_header(H2_LIT_ARGS(IgnoredRequestHeaders), name, len);
}
int h2_req_ignore_trailer(const char *name, size_t len)
{
return (h2_req_ignore_header(name, len)
|| ignore_header(H2_LIT_ARGS(IgnoredRequestTrailers), name, len));
}
int h2_res_ignore_trailer(const char *name, size_t len)
{
return ignore_header(H2_LIT_ARGS(IgnoredResponseTrailers), name, len);
}
apr_status_t h2_req_add_header(apr_table_t *headers, apr_pool_t *pool,
const char *name, size_t nlen,
const char *value, size_t vlen)
{
char *hname, *hvalue;
if (h2_req_ignore_header(name, nlen)) {
return APR_SUCCESS;
}
else if (H2_HD_MATCH_LIT("cookie", name, nlen)) {
const char *existing = apr_table_get(headers, "cookie");
if (existing) {
char *nval;
/* Cookie header come separately in HTTP/2, but need
* to be merged by "; " (instead of default ", ")
*/
hvalue = apr_pstrndup(pool, value, vlen);
nval = apr_psprintf(pool, "%s; %s", existing, hvalue);
apr_table_setn(headers, "Cookie", nval);
return APR_SUCCESS;
}
}
else if (H2_HD_MATCH_LIT("host", name, nlen)) {
if (apr_table_get(headers, "Host")) {
return APR_SUCCESS; /* ignore duplicate */
}
}
hname = apr_pstrndup(pool, name, nlen);
hvalue = apr_pstrndup(pool, value, vlen);
h2_util_camel_case_header(hname, nlen);
apr_table_mergen(headers, hname, hvalue);
return APR_SUCCESS;
}
/*******************************************************************************
* h2 request handling
******************************************************************************/
h2_request *h2_req_create(int id, apr_pool_t *pool, const char *method,
const char *scheme, const char *authority,
const char *path, apr_table_t *header, int serialize)
{
h2_request *req = apr_pcalloc(pool, sizeof(h2_request));
req->method = method;
req->scheme = scheme;
req->authority = authority;
req->path = path;
req->headers = header? header : apr_table_make(pool, 10);
req->request_time = apr_time_now();
req->serialize = serialize;
return req;
}
/*******************************************************************************
* frame logging
******************************************************************************/
int h2_util_frame_print(const nghttp2_frame *frame, char *buffer, size_t maxlen)
{
char scratch[128];
size_t s_len = sizeof(scratch)/sizeof(scratch[0]);
switch (frame->hd.type) {
case NGHTTP2_DATA: {
return apr_snprintf(buffer, maxlen,
"DATA[length=%d, flags=%d, stream=%d, padlen=%d]",
(int)frame->hd.length, frame->hd.flags,
frame->hd.stream_id, (int)frame->data.padlen);
}
case NGHTTP2_HEADERS: {
return apr_snprintf(buffer, maxlen,
"HEADERS[length=%d, hend=%d, stream=%d, eos=%d]",
(int)frame->hd.length,
!!(frame->hd.flags & NGHTTP2_FLAG_END_HEADERS),
frame->hd.stream_id,
!!(frame->hd.flags & NGHTTP2_FLAG_END_STREAM));
}
case NGHTTP2_PRIORITY: {
return apr_snprintf(buffer, maxlen,
"PRIORITY[length=%d, flags=%d, stream=%d]",
(int)frame->hd.length,
frame->hd.flags, frame->hd.stream_id);
}
case NGHTTP2_RST_STREAM: {
return apr_snprintf(buffer, maxlen,
"RST_STREAM[length=%d, flags=%d, stream=%d]",
(int)frame->hd.length,
frame->hd.flags, frame->hd.stream_id);
}
case NGHTTP2_SETTINGS: {
if (frame->hd.flags & NGHTTP2_FLAG_ACK) {
return apr_snprintf(buffer, maxlen,
"SETTINGS[ack=1, stream=%d]",
frame->hd.stream_id);
}
return apr_snprintf(buffer, maxlen,
"SETTINGS[length=%d, stream=%d]",
(int)frame->hd.length, frame->hd.stream_id);
}
case NGHTTP2_PUSH_PROMISE: {
return apr_snprintf(buffer, maxlen,
"PUSH_PROMISE[length=%d, hend=%d, stream=%d]",
(int)frame->hd.length,
!!(frame->hd.flags & NGHTTP2_FLAG_END_HEADERS),
frame->hd.stream_id);
}
case NGHTTP2_PING: {
return apr_snprintf(buffer, maxlen,
"PING[length=%d, ack=%d, stream=%d]",
(int)frame->hd.length,
frame->hd.flags&NGHTTP2_FLAG_ACK,
frame->hd.stream_id);
}
case NGHTTP2_GOAWAY: {
size_t len = (frame->goaway.opaque_data_len < s_len)?
frame->goaway.opaque_data_len : s_len-1;
memcpy(scratch, frame->goaway.opaque_data, len);
scratch[len] = '\0';
return apr_snprintf(buffer, maxlen, "GOAWAY[error=%d, reason='%s', "
"last_stream=%d]", frame->goaway.error_code,
scratch, frame->goaway.last_stream_id);
}
case NGHTTP2_WINDOW_UPDATE: {
return apr_snprintf(buffer, maxlen,
"WINDOW_UPDATE[stream=%d, incr=%d]",
frame->hd.stream_id,
frame->window_update.window_size_increment);
}
default:
return apr_snprintf(buffer, maxlen,
"type=%d[length=%d, flags=%d, stream=%d]",
frame->hd.type, (int)frame->hd.length,
frame->hd.flags, frame->hd.stream_id);
}
}
/*******************************************************************************
* push policy
******************************************************************************/
int h2_push_policy_determine(apr_table_t *headers, apr_pool_t *p, int push_enabled)
{
h2_push_policy policy = H2_PUSH_NONE;
if (push_enabled) {
const char *val = apr_table_get(headers, "accept-push-policy");
if (val) {
if (ap_find_token(p, val, "fast-load")) {
policy = H2_PUSH_FAST_LOAD;
}
else if (ap_find_token(p, val, "head")) {
policy = H2_PUSH_HEAD;
}
else if (ap_find_token(p, val, "default")) {
policy = H2_PUSH_DEFAULT;
}
else if (ap_find_token(p, val, "none")) {
policy = H2_PUSH_NONE;
}
else {
/* nothing known found in this header, go by default */