--- /dev/null
+/*
+ +--------------------------------------------------------------------+
+ | PECL :: http |
+ +--------------------------------------------------------------------+
+ | Redistribution and use in source and binary forms, with or without |
+ | modification, are permitted provided that the conditions mentioned |
+ | in the accompanying LICENSE file are met. |
+ +--------------------------------------------------------------------+
+ | Copyright (c) 2004-2013, Michael Wallner <mike@php.net> |
+ +--------------------------------------------------------------------+
+*/
+
+#include "php_http_api.h"
+
+#ifndef DBG_PARSER
+# define DBG_PARSER 0
+#endif
+
+typedef struct php_http_message_parser_state_spec {
+ php_http_message_parser_state_t state;
+ unsigned need_data:1;
+} php_http_message_parser_state_spec_t;
+
+static const php_http_message_parser_state_spec_t php_http_message_parser_states[] = {
+ {PHP_HTTP_MESSAGE_PARSER_STATE_START, 1},
+ {PHP_HTTP_MESSAGE_PARSER_STATE_HEADER, 1},
+ {PHP_HTTP_MESSAGE_PARSER_STATE_HEADER_DONE, 0},
+ {PHP_HTTP_MESSAGE_PARSER_STATE_BODY, 0},
+ {PHP_HTTP_MESSAGE_PARSER_STATE_BODY_DUMB, 1},
+ {PHP_HTTP_MESSAGE_PARSER_STATE_BODY_LENGTH, 1},
+ {PHP_HTTP_MESSAGE_PARSER_STATE_BODY_CHUNKED, 1},
+ {PHP_HTTP_MESSAGE_PARSER_STATE_BODY_DONE, 0},
+ {PHP_HTTP_MESSAGE_PARSER_STATE_DONE, 0}
+};
+
+#if DBG_PARSER
+const char *php_http_message_parser_state_name(php_http_message_parser_state_t state) {
+ const char *states[] = {"START", "HEADER", "HEADER_DONE", "BODY", "BODY_DUMB", "BODY_LENGTH", "BODY_CHUNK", "BODY_DONE", "DONE"};
+
+ if (state < 0 || state > (sizeof(states)/sizeof(char*))-1) {
+ return "FAILURE";
+ }
+ return states[state];
+}
+#endif
+
+php_http_message_parser_t *php_http_message_parser_init(php_http_message_parser_t *parser TSRMLS_DC)
+{
+ if (!parser) {
+ parser = emalloc(sizeof(*parser));
+ }
+ memset(parser, 0, sizeof(*parser));
+
+ TSRMLS_SET_CTX(parser->ts);
+
+ php_http_header_parser_init(&parser->header TSRMLS_CC);
+ zend_stack_init(&parser->stack);
+
+ return parser;
+}
+
+php_http_message_parser_state_t php_http_message_parser_state_push(php_http_message_parser_t *parser, unsigned argc, ...)
+{
+ php_http_message_parser_state_t state;
+ va_list va_args;
+ unsigned i;
+
+ va_start(va_args, argc);
+ for (i = 0; i < argc; ++i) {
+ state = va_arg(va_args, php_http_message_parser_state_t);
+ zend_stack_push(&parser->stack, &state, sizeof(state));
+ }
+ va_end(va_args);
+
+ return state;
+}
+
+php_http_message_parser_state_t php_http_message_parser_state_is(php_http_message_parser_t *parser)
+{
+ php_http_message_parser_state_t *state;
+
+ if (SUCCESS == zend_stack_top(&parser->stack, (void *) &state)) {
+ return *state;
+ }
+ return PHP_HTTP_MESSAGE_PARSER_STATE_START;
+}
+
+php_http_message_parser_state_t php_http_message_parser_state_pop(php_http_message_parser_t *parser)
+{
+ php_http_message_parser_state_t state, *state_ptr;
+ if (SUCCESS == zend_stack_top(&parser->stack, (void *) &state_ptr)) {
+ state = *state_ptr;
+ zend_stack_del_top(&parser->stack);
+ return state;
+ }
+ return PHP_HTTP_MESSAGE_PARSER_STATE_START;
+}
+
+void php_http_message_parser_dtor(php_http_message_parser_t *parser)
+{
+ php_http_header_parser_dtor(&parser->header);
+ zend_stack_destroy(&parser->stack);
+ if (parser->dechunk) {
+ php_http_encoding_stream_free(&parser->dechunk);
+ }
+ if (parser->inflate) {
+ php_http_encoding_stream_free(&parser->inflate);
+ }
+}
+
+void php_http_message_parser_free(php_http_message_parser_t **parser)
+{
+ if (*parser) {
+ php_http_message_parser_dtor(*parser);
+ efree(*parser);
+ *parser = NULL;
+ }
+}
+
+php_http_message_parser_state_t php_http_message_parser_parse_stream(php_http_message_parser_t *parser, php_stream *s, unsigned flags, php_http_message_t **message)
+{
+ php_http_buffer_t buf;
+ php_http_message_parser_state_t state = PHP_HTTP_MESSAGE_PARSER_STATE_START;
+ TSRMLS_FETCH_FROM_CTX(parser->ts);
+
+ php_http_buffer_init_ex(&buf, 0x1000, PHP_HTTP_BUFFER_INIT_PREALLOC);
+
+ while (!php_stream_eof(s)) {
+ size_t len = 0;
+#if DBG_PARSER
+ fprintf(stderr, "#SP: %s (f:%u)\n", php_http_message_parser_state_name(state), flags);
+#endif
+ switch (state) {
+ case PHP_HTTP_MESSAGE_PARSER_STATE_START:
+ case PHP_HTTP_MESSAGE_PARSER_STATE_HEADER:
+ case PHP_HTTP_MESSAGE_PARSER_STATE_HEADER_DONE:
+ /* read line */
+ php_stream_get_line(s, buf.data + buf.used, buf.free, &len);
+ php_http_buffer_account(&buf, len);
+ break;
+
+ case PHP_HTTP_MESSAGE_PARSER_STATE_BODY_DUMB:
+ /* read all */
+ php_http_buffer_account(&buf, php_stream_read(s, buf.data + buf.used, buf.free));
+ break;
+
+ case PHP_HTTP_MESSAGE_PARSER_STATE_BODY_LENGTH:
+ /* read body_length */
+ php_http_buffer_account(&buf, php_stream_read(s, buf.data + buf.used, MIN(buf.free, parser->body_length)));
+ break;
+
+ case PHP_HTTP_MESSAGE_PARSER_STATE_BODY_CHUNKED:
+ /* duh, this is very naive */
+ if (len) {
+ size_t read = php_stream_read(s, buf.data + buf.used, MIN(len, buf.free));
+
+ php_http_buffer_account(&buf, read);
+
+ len -= read;
+ } else {
+ php_http_buffer_resize(&buf, 24);
+ php_stream_get_line(s, buf.data, buf.free, &len);
+ php_http_buffer_account(&buf, len);
+
+ len = strtoul(buf.data + buf.used - len, NULL, 16);
+ }
+ break;
+
+ case PHP_HTTP_MESSAGE_PARSER_STATE_BODY:
+ case PHP_HTTP_MESSAGE_PARSER_STATE_BODY_DONE:
+ /* should not occur */
+ abort();
+ break;
+
+ case PHP_HTTP_MESSAGE_PARSER_STATE_DONE:
+ case PHP_HTTP_MESSAGE_PARSER_STATE_FAILURE:
+ php_http_buffer_dtor(&buf);
+ return php_http_message_parser_state_is(parser);
+ }
+
+ state = php_http_message_parser_parse(parser, &buf, flags, message);
+ }
+
+ php_http_buffer_dtor(&buf);
+ return PHP_HTTP_MESSAGE_PARSER_STATE_DONE;
+}
+
+
+php_http_message_parser_state_t php_http_message_parser_parse(php_http_message_parser_t *parser, php_http_buffer_t *buffer, unsigned flags, php_http_message_t **message)
+{
+ char *str = NULL;
+ size_t len = 0;
+ size_t cut = 0;
+ TSRMLS_FETCH_FROM_CTX(parser->ts);
+
+ while (buffer->used || !php_http_message_parser_states[php_http_message_parser_state_is(parser)].need_data) {
+#if DBG_PARSER
+ fprintf(stderr, "#MP: %s (f: %u, t:%d, l:%zu)\n",
+ php_http_message_parser_state_name(php_http_message_parser_state_is(parser)),
+ flags,
+ message && *message ? (*message)->type : -1,
+ buffer->used
+ );
+ _dpf(0, buffer->data, buffer->used);
+#endif
+
+ switch (php_http_message_parser_state_pop(parser))
+ {
+ case PHP_HTTP_MESSAGE_PARSER_STATE_FAILURE:
+ return php_http_message_parser_state_push(parser, 1, PHP_HTTP_MESSAGE_PARSER_STATE_FAILURE);
+
+ case PHP_HTTP_MESSAGE_PARSER_STATE_START:
+ {
+ char *ptr = buffer->data;
+
+ while (ptr - buffer->data < buffer->used && PHP_HTTP_IS_CTYPE(space, *ptr)) {
+ ++ptr;
+ }
+
+ php_http_buffer_cut(buffer, 0, ptr - buffer->data);
+
+ if (buffer->used) {
+ php_http_message_parser_state_push(parser, 1, PHP_HTTP_MESSAGE_PARSER_STATE_HEADER);
+ }
+ break;
+ }
+
+ case PHP_HTTP_MESSAGE_PARSER_STATE_HEADER:
+ {
+ unsigned header_parser_flags = (flags & PHP_HTTP_MESSAGE_PARSER_CLEANUP) ? PHP_HTTP_HEADER_PARSER_CLEANUP : 0;
+
+ switch (php_http_header_parser_parse(&parser->header, buffer, header_parser_flags, *message ? &(*message)->hdrs : NULL, (php_http_info_callback_t) php_http_message_info_callback, message)) {
+ case PHP_HTTP_HEADER_PARSER_STATE_FAILURE:
+ return PHP_HTTP_MESSAGE_PARSER_STATE_FAILURE;
+
+ case PHP_HTTP_HEADER_PARSER_STATE_DONE:
+ php_http_message_parser_state_push(parser, 1, PHP_HTTP_MESSAGE_PARSER_STATE_HEADER_DONE);
+ break;
+
+ default:
+ php_http_message_parser_state_push(parser, 1, PHP_HTTP_MESSAGE_PARSER_STATE_HEADER);
+ if (buffer->used) {
+ return PHP_HTTP_MESSAGE_PARSER_STATE_HEADER;
+ }
+ }
+ break;
+ }
+
+ case PHP_HTTP_MESSAGE_PARSER_STATE_HEADER_DONE:
+ {
+ zval *h, *h_loc = NULL, *h_con = NULL, **h_cl = NULL, **h_cr = NULL, **h_te = NULL;
+
+ if ((h = php_http_message_header(*message, ZEND_STRL("Transfer-Encoding"), 1))) {
+ zend_hash_update(&(*message)->hdrs, "X-Original-Transfer-Encoding", sizeof("X-Original-Transfer-Encoding"), &h, sizeof(zval *), (void *) &h_te);
+ zend_hash_del(&(*message)->hdrs, "Transfer-Encoding", sizeof("Transfer-Encoding"));
+ }
+ if ((h = php_http_message_header(*message, ZEND_STRL("Content-Length"), 1))) {
+ zend_hash_update(&(*message)->hdrs, "X-Original-Content-Length", sizeof("X-Original-Content-Length"), &h, sizeof(zval *), (void *) &h_cl);
+ }
+ if ((h = php_http_message_header(*message, ZEND_STRL("Content-Range"), 1))) {
+ zend_hash_update(&(*message)->hdrs, "X-Original-Content-Range", sizeof("X-Original-Content-Range"), &h, sizeof(zval *), (void *) &h_cr);
+ zend_hash_del(&(*message)->hdrs, "Content-Range", sizeof("Content-Range"));
+ }
+
+ /* default */
+ MAKE_STD_ZVAL(h);
+ ZVAL_LONG(h, 0);
+ zend_hash_update(&(*message)->hdrs, "Content-Length", sizeof("Content-Length"), &h, sizeof(zval *), NULL);
+
+ /* so, if curl sees a 3xx code, a Location header and a Connection:close header
+ * it decides not to read the response body.
+ */
+ if ((flags & PHP_HTTP_MESSAGE_PARSER_EMPTY_REDIRECTS)
+ && (*message)->type == PHP_HTTP_RESPONSE
+ && (*message)->http.info.response.code/100 == 3
+ && (h_loc = php_http_message_header(*message, ZEND_STRL("Location"), 1))
+ && (h_con = php_http_message_header(*message, ZEND_STRL("Connection"), 1))
+ ) {
+ if (php_http_match(Z_STRVAL_P(h_con), "close", PHP_HTTP_MATCH_WORD)) {
+ php_http_message_parser_state_push(parser, 1, PHP_HTTP_MESSAGE_PARSER_STATE_DONE);
+ zval_ptr_dtor(&h_loc);
+ zval_ptr_dtor(&h_con);
+ break;
+ }
+ }
+ if (h_loc) {
+ zval_ptr_dtor(&h_loc);
+ }
+ if (h_con) {
+ zval_ptr_dtor(&h_con);
+ }
+
+ if ((h = php_http_message_header(*message, ZEND_STRL("Content-Encoding"), 1))) {
+ if (php_http_match(Z_STRVAL_P(h), "gzip", PHP_HTTP_MATCH_WORD)
+ || php_http_match(Z_STRVAL_P(h), "x-gzip", PHP_HTTP_MATCH_WORD)
+ || php_http_match(Z_STRVAL_P(h), "deflate", PHP_HTTP_MATCH_WORD)
+ ) {
+ if (parser->inflate) {
+ php_http_encoding_stream_reset(&parser->inflate);
+ } else {
+ parser->inflate = php_http_encoding_stream_init(NULL, php_http_encoding_stream_get_inflate_ops(), 0 TSRMLS_CC);
+ }
+ zend_hash_update(&(*message)->hdrs, "X-Original-Content-Encoding", sizeof("X-Original-Content-Encoding"), &h, sizeof(zval *), NULL);
+ zend_hash_del(&(*message)->hdrs, "Content-Encoding", sizeof("Content-Encoding"));
+ } else {
+ zval_ptr_dtor(&h);
+ }
+ }
+
+ if ((flags & PHP_HTTP_MESSAGE_PARSER_DUMB_BODIES)) {
+ php_http_message_parser_state_push(parser, 1, PHP_HTTP_MESSAGE_PARSER_STATE_BODY_DUMB);
+ } else {
+ if (h_te) {
+ if (strstr(Z_STRVAL_PP(h_te), "chunked")) {
+ parser->dechunk = php_http_encoding_stream_init(parser->dechunk, php_http_encoding_stream_get_dechunk_ops(), 0 TSRMLS_CC);
+ php_http_message_parser_state_push(parser, 1, PHP_HTTP_MESSAGE_PARSER_STATE_BODY_CHUNKED);
+ break;
+ }
+ }
+
+ if (h_cl) {
+ char *stop;
+
+ if (Z_TYPE_PP(h_cl) == IS_STRING) {
+ parser->body_length = strtoul(Z_STRVAL_PP(h_cl), &stop, 10);
+
+ if (stop != Z_STRVAL_PP(h_cl)) {
+ php_http_message_parser_state_push(parser, 1, !parser->body_length?PHP_HTTP_MESSAGE_PARSER_STATE_BODY_DONE:PHP_HTTP_MESSAGE_PARSER_STATE_BODY_LENGTH);
+ break;
+ }
+ } else if (Z_TYPE_PP(h_cl) == IS_LONG) {
+ parser->body_length = Z_LVAL_PP(h_cl);
+ php_http_message_parser_state_push(parser, 1, !parser->body_length?PHP_HTTP_MESSAGE_PARSER_STATE_BODY_DONE:PHP_HTTP_MESSAGE_PARSER_STATE_BODY_LENGTH);
+ break;
+ }
+ }
+
+ if (h_cr) {
+ ulong total = 0, start = 0, end = 0;
+
+ if (!strncasecmp(Z_STRVAL_PP(h_cr), "bytes", lenof("bytes"))
+ && ( Z_STRVAL_P(h)[lenof("bytes")] == ':'
+ || Z_STRVAL_P(h)[lenof("bytes")] == ' '
+ || Z_STRVAL_P(h)[lenof("bytes")] == '='
+ )
+ ) {
+ char *total_at = NULL, *end_at = NULL;
+ char *start_at = Z_STRVAL_PP(h_cr) + sizeof("bytes");
+
+ start = strtoul(start_at, &end_at, 10);
+ if (end_at) {
+ end = strtoul(end_at + 1, &total_at, 10);
+ if (total_at && strncmp(total_at + 1, "*", 1)) {
+ total = strtoul(total_at + 1, NULL, 10);
+ }
+
+ if (end >= start && (!total || end < total)) {
+ parser->body_length = end + 1 - start;
+ php_http_message_parser_state_push(parser, 1, !parser->body_length?PHP_HTTP_MESSAGE_PARSER_STATE_BODY_DONE:PHP_HTTP_MESSAGE_PARSER_STATE_BODY_LENGTH);
+ break;
+ }
+ }
+ }
+ }
+
+
+ if ((*message)->type == PHP_HTTP_REQUEST) {
+ php_http_message_parser_state_push(parser, 1, PHP_HTTP_MESSAGE_PARSER_STATE_DONE);
+ } else {
+ php_http_message_parser_state_push(parser, 1, PHP_HTTP_MESSAGE_PARSER_STATE_BODY_DUMB);
+ }
+ }
+ break;
+ }
+
+ case PHP_HTTP_MESSAGE_PARSER_STATE_BODY:
+ {
+ if (len) {
+ zval *zcl;
+
+ if (parser->inflate) {
+ char *dec_str = NULL;
+ size_t dec_len;
+
+ if (SUCCESS != php_http_encoding_stream_update(parser->inflate, str, len, &dec_str, &dec_len)) {
+ return php_http_message_parser_state_push(parser, 1, PHP_HTTP_MESSAGE_PARSER_STATE_FAILURE);
+ }
+
+ if (str != buffer->data) {
+ STR_FREE(str);
+ }
+ str = dec_str;
+ len = dec_len;
+ }
+
+ php_stream_write(php_http_message_body_stream((*message)->body), str, len);
+
+ /* keep track */
+ MAKE_STD_ZVAL(zcl);
+ ZVAL_LONG(zcl, php_http_message_body_size((*message)->body));
+ zend_hash_update(&(*message)->hdrs, "Content-Length", sizeof("Content-Length"), &zcl, sizeof(zval *), NULL);
+ }
+
+ if (cut) {
+ php_http_buffer_cut(buffer, 0, cut);
+ }
+
+ if (str != buffer->data) {
+ STR_FREE(str);
+ }
+
+ str = NULL;
+ len = 0;
+ cut = 0;
+ break;
+ }
+
+ case PHP_HTTP_MESSAGE_PARSER_STATE_BODY_DUMB:
+ {
+ str = buffer->data;
+ len = buffer->used;
+ cut = len;
+
+ php_http_message_parser_state_push(parser, 2, PHP_HTTP_MESSAGE_PARSER_STATE_BODY_DONE, PHP_HTTP_MESSAGE_PARSER_STATE_BODY);
+ break;
+ }
+
+ case PHP_HTTP_MESSAGE_PARSER_STATE_BODY_LENGTH:
+ {
+ len = MIN(parser->body_length, buffer->used);
+ str = buffer->data;
+ cut = len;
+
+ parser->body_length -= len;
+
+ php_http_message_parser_state_push(parser, 2, !parser->body_length?PHP_HTTP_MESSAGE_PARSER_STATE_BODY_DONE:PHP_HTTP_MESSAGE_PARSER_STATE_BODY_LENGTH, PHP_HTTP_MESSAGE_PARSER_STATE_BODY);
+ break;
+ }
+
+ case PHP_HTTP_MESSAGE_PARSER_STATE_BODY_CHUNKED:
+ {
+ /*
+ * - pass available data through the dechunk stream
+ * - pass decoded data along
+ * - if stream zeroed:
+ * Y: - cut processed string out of buffer, but leave length of unprocessed dechunk stream data untouched
+ * - body done
+ * N: - parse ahaed
+ */
+ char *dec_str = NULL;
+ size_t dec_len;
+
+ if (SUCCESS != php_http_encoding_stream_update(parser->dechunk, buffer->data, buffer->used, &dec_str, &dec_len)) {
+ return PHP_HTTP_MESSAGE_PARSER_STATE_FAILURE;
+ }
+
+ str = dec_str;
+ len = dec_len;
+
+ if (php_http_encoding_stream_done(parser->dechunk)) {
+ cut = buffer->used - PHP_HTTP_BUFFER(parser->dechunk->ctx)->used;
+ php_http_message_parser_state_push(parser, 2, PHP_HTTP_MESSAGE_PARSER_STATE_BODY_DONE, PHP_HTTP_MESSAGE_PARSER_STATE_BODY);
+ } else {
+ cut = buffer->used;
+ php_http_message_parser_state_push(parser, 2, PHP_HTTP_MESSAGE_PARSER_STATE_BODY_CHUNKED, PHP_HTTP_MESSAGE_PARSER_STATE_BODY);
+ }
+ break;
+ }
+
+ case PHP_HTTP_MESSAGE_PARSER_STATE_BODY_DONE:
+ {
+ php_http_message_parser_state_push(parser, 1, PHP_HTTP_MESSAGE_PARSER_STATE_DONE);
+
+ if (parser->dechunk) {
+ char *dec_str = NULL;
+ size_t dec_len;
+
+ if (SUCCESS != php_http_encoding_stream_finish(parser->dechunk, &dec_str, &dec_len)) {
+ return php_http_message_parser_state_push(parser, 1, PHP_HTTP_MESSAGE_PARSER_STATE_FAILURE);
+ }
+ php_http_encoding_stream_dtor(parser->dechunk);
+
+ if (dec_str && dec_len) {
+ str = dec_str;
+ len = dec_len;
+ cut = 0;
+ php_http_message_parser_state_push(parser, 1, PHP_HTTP_MESSAGE_PARSER_STATE_BODY);
+ }
+ }
+
+ break;
+ }
+
+ case PHP_HTTP_MESSAGE_PARSER_STATE_DONE: {
+ char *ptr = buffer->data;
+
+ while (ptr - buffer->data < buffer->used && PHP_HTTP_IS_CTYPE(space, *ptr)) {
+ ++ptr;
+ }
+
+ php_http_buffer_cut(buffer, 0, ptr - buffer->data);
+
+ if (!(flags & PHP_HTTP_MESSAGE_PARSER_GREEDY)) {
+ return PHP_HTTP_MESSAGE_PARSER_STATE_DONE;
+ }
+ break;
+ }
+ }
+ }
+
+ return php_http_message_parser_state_is(parser);
+}
+
+/*
+ * Local variables:
+ * tab-width: 4
+ * c-basic-offset: 4
+ * End:
+ * vim600: noet sw=4 ts=4 fdm=marker
+ * vim<600: noet sw=4 ts=4
+ */
+
projects / m6w6 / ext-http / blobdiff