27 void CBB_zero(CBB *cbb) {  in CBB_zero()  argument
28   OPENSSL_memset(cbb, 0, sizeof(CBB));  in CBB_zero()
31 static int cbb_init(CBB *cbb, uint8_t *buf, size_t cap) {  in cbb_init()  argument
46   cbb->base = base;  in cbb_init()
47   cbb->is_top_level = 1;  in cbb_init()
51 int CBB_init(CBB *cbb, size_t initial_capacity) {  in CBB_init()  argument
52   CBB_zero(cbb);  in CBB_init()
59   if (!cbb_init(cbb, buf, initial_capacity)) {  in CBB_init()
67 int CBB_init_fixed(CBB *cbb, uint8_t *buf, size_t len) {  in CBB_init_fixed()  argument
68   CBB_zero(cbb);  in CBB_init_fixed()
70   if (!cbb_init(cbb, buf, len)) {  in CBB_init_fixed()
74   cbb->base->can_resize = 0;  in CBB_init_fixed()
78 void CBB_cleanup(CBB *cbb) {  in CBB_cleanup()  argument
79   if (cbb->base) {  in CBB_cleanup()
82     assert(cbb->is_top_level);  in CBB_cleanup()
84     if (cbb->base->can_resize) {  in CBB_cleanup()
85       OPENSSL_free(cbb->base->buf);  in CBB_cleanup()
87     OPENSSL_free(cbb->base);  in CBB_cleanup()
89   cbb->base = NULL;  in CBB_cleanup()
171 int CBB_finish(CBB *cbb, uint8_t **out_data, size_t *out_len) {  in CBB_finish()  argument
172   if (!cbb->is_top_level) {  in CBB_finish()
176   if (!CBB_flush(cbb)) {  in CBB_finish()
180   if (cbb->base->can_resize && (out_data == NULL || out_len == NULL)) {  in CBB_finish()
186     *out_data = cbb->base->buf;  in CBB_finish()
189     *out_len = cbb->base->len;  in CBB_finish()
191   cbb->base->buf = NULL;  in CBB_finish()
192   CBB_cleanup(cbb);  in CBB_finish()
199 int CBB_flush(CBB *cbb) {  in CBB_flush()  argument
205   if (cbb->base == NULL || cbb->base->error) {  in CBB_flush()
209   if (cbb->child == NULL || cbb->child->pending_len_len == 0) {  in CBB_flush()
213   child_start = cbb->child->offset + cbb->child->pending_len_len;  in CBB_flush()
215   if (!CBB_flush(cbb->child) ||  in CBB_flush()
216       child_start < cbb->child->offset ||  in CBB_flush()
217       cbb->base->len < child_start) {  in CBB_flush()
221   len = cbb->base->len - child_start;  in CBB_flush()
223   if (cbb->child->pending_is_asn1) {  in CBB_flush()
230     assert (cbb->child->pending_len_len == 1);  in CBB_flush()
256       if (!cbb_buffer_add(cbb->base, NULL, extra_bytes)) {  in CBB_flush()
259       OPENSSL_memmove(cbb->base->buf + child_start + extra_bytes,  in CBB_flush()
260                       cbb->base->buf + child_start, len);  in CBB_flush()
262     cbb->base->buf[cbb->child->offset++] = initial_length_byte;  in CBB_flush()
263     cbb->child->pending_len_len = len_len - 1;  in CBB_flush()
266   for (i = cbb->child->pending_len_len - 1; i < cbb->child->pending_len_len;  in CBB_flush()
268     cbb->base->buf[cbb->child->offset + i] = (uint8_t)len;  in CBB_flush()
275   cbb->child->base = NULL;  in CBB_flush()
276   cbb->child = NULL;  in CBB_flush()
281   cbb->base->error = 1;  in CBB_flush()
285 const uint8_t *CBB_data(const CBB *cbb) {  in CBB_data()  argument
286   assert(cbb->child == NULL);  in CBB_data()
287   return cbb->base->buf + cbb->offset + cbb->pending_len_len;  in CBB_data()
290 size_t CBB_len(const CBB *cbb) {  in CBB_len()  argument
291   assert(cbb->child == NULL);  in CBB_len()
292   assert(cbb->offset + cbb->pending_len_len <= cbb->base->len);  in CBB_len()
294   return cbb->base->len - cbb->offset - cbb->pending_len_len;  in CBB_len()
297 static int cbb_add_length_prefixed(CBB *cbb, CBB *out_contents,  in cbb_add_length_prefixed()  argument
301   if (!CBB_flush(cbb)) {  in cbb_add_length_prefixed()
305   size_t offset = cbb->base->len;  in cbb_add_length_prefixed()
306   if (!cbb_buffer_add(cbb->base, &prefix_bytes, len_len)) {  in cbb_add_length_prefixed()
312   out_contents->base = cbb->base;  in cbb_add_length_prefixed()
313   cbb->child = out_contents;  in cbb_add_length_prefixed()
314   cbb->child->offset = offset;  in cbb_add_length_prefixed()
315   cbb->child->pending_len_len = len_len;  in cbb_add_length_prefixed()
316   cbb->child->pending_is_asn1 = 0;  in cbb_add_length_prefixed()
321 int CBB_add_u8_length_prefixed(CBB *cbb, CBB *out_contents) {  in CBB_add_u8_length_prefixed()  argument
322   return cbb_add_length_prefixed(cbb, out_contents, 1);  in CBB_add_u8_length_prefixed()
325 int CBB_add_u16_length_prefixed(CBB *cbb, CBB *out_contents) {  in CBB_add_u16_length_prefixed()  argument
326   return cbb_add_length_prefixed(cbb, out_contents, 2);  in CBB_add_u16_length_prefixed()
329 int CBB_add_u24_length_prefixed(CBB *cbb, CBB *out_contents) {  in CBB_add_u24_length_prefixed()  argument
330   return cbb_add_length_prefixed(cbb, out_contents, 3);  in CBB_add_u24_length_prefixed()
336 static int add_base128_integer(CBB *cbb, uint64_t v) {  in add_base128_integer()  argument
352     if (!CBB_add_u8(cbb, byte)) {  in add_base128_integer()
359 int CBB_add_asn1(CBB *cbb, CBB *out_contents, unsigned tag) {  in CBB_add_asn1()  argument
360   if (!CBB_flush(cbb)) {  in CBB_add_asn1()
369     if (!CBB_add_u8(cbb, tag_bits | 0x1f) ||  in CBB_add_asn1()
370         !add_base128_integer(cbb, tag_number)) {  in CBB_add_asn1()
373   } else if (!CBB_add_u8(cbb, tag_bits | tag_number)) {  in CBB_add_asn1()
377   size_t offset = cbb->base->len;  in CBB_add_asn1()
378   if (!CBB_add_u8(cbb, 0)) {  in CBB_add_asn1()
383   out_contents->base = cbb->base;  in CBB_add_asn1()
384   cbb->child = out_contents;  in CBB_add_asn1()
385   cbb->child->offset = offset;  in CBB_add_asn1()
386   cbb->child->pending_len_len = 1;  in CBB_add_asn1()
387   cbb->child->pending_is_asn1 = 1;  in CBB_add_asn1()
392 int CBB_add_bytes(CBB *cbb, const uint8_t *data, size_t len) {  in CBB_add_bytes()  argument
395   if (!CBB_flush(cbb) ||  in CBB_add_bytes()
396       !cbb_buffer_add(cbb->base, &dest, len)) {  in CBB_add_bytes()
403 int CBB_add_space(CBB *cbb, uint8_t **out_data, size_t len) {  in CBB_add_space()  argument
404   if (!CBB_flush(cbb) ||  in CBB_add_space()
405       !cbb_buffer_add(cbb->base, out_data, len)) {  in CBB_add_space()
411 int CBB_reserve(CBB *cbb, uint8_t **out_data, size_t len) {  in CBB_reserve()  argument
412   if (!CBB_flush(cbb) ||  in CBB_reserve()
413       !cbb_buffer_reserve(cbb->base, out_data, len)) {  in CBB_reserve()
419 int CBB_did_write(CBB *cbb, size_t len) {  in CBB_did_write()  argument
420   size_t newlen = cbb->base->len + len;  in CBB_did_write()
421   if (cbb->child != NULL ||  in CBB_did_write()
422       newlen < cbb->base->len ||  in CBB_did_write()
423       newlen > cbb->base->cap) {  in CBB_did_write()
426   cbb->base->len = newlen;  in CBB_did_write()
430 int CBB_add_u8(CBB *cbb, uint8_t value) {  in CBB_add_u8()  argument
431   if (!CBB_flush(cbb)) {  in CBB_add_u8()
435   return cbb_buffer_add_u(cbb->base, value, 1);  in CBB_add_u8()
438 int CBB_add_u16(CBB *cbb, uint16_t value) {  in CBB_add_u16()  argument
439   if (!CBB_flush(cbb)) {  in CBB_add_u16()
443   return cbb_buffer_add_u(cbb->base, value, 2);  in CBB_add_u16()
446 int CBB_add_u24(CBB *cbb, uint32_t value) {  in CBB_add_u24()  argument
447   if (!CBB_flush(cbb)) {  in CBB_add_u24()
451   return cbb_buffer_add_u(cbb->base, value, 3);  in CBB_add_u24()
454 int CBB_add_u32(CBB *cbb, uint32_t value) {  in CBB_add_u32()  argument
455   if (!CBB_flush(cbb)) {  in CBB_add_u32()
459   return cbb_buffer_add_u(cbb->base, value, 4);  in CBB_add_u32()
462 int CBB_add_u64(CBB *cbb, uint64_t value) {  in CBB_add_u64()  argument
463   if (!CBB_flush(cbb)) {  in CBB_add_u64()
466   return cbb_buffer_add_u(cbb->base, value, 8);  in CBB_add_u64()
469 void CBB_discard_child(CBB *cbb) {  in CBB_discard_child()  argument
470   if (cbb->child == NULL) {  in CBB_discard_child()
474   cbb->base->len = cbb->child->offset;  in CBB_discard_child()
476   cbb->child->base = NULL;  in CBB_discard_child()
477   cbb->child = NULL;  in CBB_discard_child()
480 int CBB_add_asn1_uint64(CBB *cbb, uint64_t value) {  in CBB_add_asn1_uint64()  argument
484   if (!CBB_add_asn1(cbb, &child, CBS_ASN1_INTEGER)) {  in CBB_add_asn1_uint64()
512   return CBB_flush(cbb);  in CBB_add_asn1_uint64()
515 int CBB_add_asn1_octet_string(CBB *cbb, const uint8_t *data, size_t data_len) {  in CBB_add_asn1_octet_string()  argument
517   if (!CBB_add_asn1(cbb, &child, CBS_ASN1_OCTETSTRING) ||  in CBB_add_asn1_octet_string()
519       !CBB_flush(cbb)) {  in CBB_add_asn1_octet_string()
526 int CBB_add_asn1_bool(CBB *cbb, int value) {  in CBB_add_asn1_bool()  argument
528   if (!CBB_add_asn1(cbb, &child, CBS_ASN1_BOOLEAN) ||  in CBB_add_asn1_bool()
530       !CBB_flush(cbb)) {  in CBB_add_asn1_bool()
568 int CBB_add_asn1_oid_from_text(CBB *cbb, const char *text, size_t len) {  in CBB_add_asn1_oid_from_text()  argument
569   if (!CBB_flush(cbb)) {  in CBB_add_asn1_oid_from_text()
588       !add_base128_integer(cbb, 40u * a + b)) {  in CBB_add_asn1_oid_from_text()
595         !add_base128_integer(cbb, a)) {  in CBB_add_asn1_oid_from_text()
621 int CBB_flush_asn1_set_of(CBB *cbb) {  in CBB_flush_asn1_set_of()  argument
622   if (!CBB_flush(cbb)) {  in CBB_flush_asn1_set_of()
628   CBS_init(&cbs, CBB_data(cbb), CBB_len(cbb));  in CBB_flush_asn1_set_of()
646   size_t buf_len = CBB_len(cbb);  in CBB_flush_asn1_set_of()
647   uint8_t *buf = BUF_memdup(CBB_data(cbb), buf_len);  in CBB_flush_asn1_set_of()
661   cbb->base->len = cbb->offset + cbb->pending_len_len;  in CBB_flush_asn1_set_of()
663     if (!CBB_add_bytes(cbb, CBS_data(&children[i]), CBS_len(&children[i]))) {  in CBB_flush_asn1_set_of()
667   assert(CBB_len(cbb) == buf_len);  in CBB_flush_asn1_set_of()