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Commit 19a51a91 authored by yang-g's avatar yang-g
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Remove unused file

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src/core/lib/http/parser.c.orig deleted 100644 → 0
+ 0
− 357
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/*
*
* Copyright 2015, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#include "src/core/lib/http/parser.h"
#include <string.h>
#include <grpc/support/alloc.h>
#include <grpc/support/log.h>
#include <grpc/support/useful.h>
int grpc_http1_trace = 0;
static char *buf2str(void *buffer, size_t length) {
char *out = gpr_malloc(length + 1);
memcpy(out, buffer, length);
out[length] = 0;
return out;
}
static grpc_error *handle_response_line(grpc_http_parser *parser) {
uint8_t *beg = parser->cur_line;
uint8_t *cur = beg;
uint8_t *end = beg + parser->cur_line_length;
if (cur == end || *cur++ != 'H') return GRPC_ERROR_CREATE("Expected 'H'");
if (cur == end || *cur++ != 'T') return GRPC_ERROR_CREATE("Expected 'T'");
if (cur == end || *cur++ != 'T') return GRPC_ERROR_CREATE("Expected 'T'");
if (cur == end || *cur++ != 'P') return GRPC_ERROR_CREATE("Expected 'P'");
if (cur == end || *cur++ != '/') return GRPC_ERROR_CREATE("Expected '/'");
if (cur == end || *cur++ != '1') return GRPC_ERROR_CREATE("Expected '1'");
if (cur == end || *cur++ != '.') return GRPC_ERROR_CREATE("Expected '.'");
if (cur == end || *cur < '0' || *cur++ > '1') {
return GRPC_ERROR_CREATE("Expected HTTP/1.0 or HTTP/1.1");
}
if (cur == end || *cur++ != ' ') return GRPC_ERROR_CREATE("Expected ' '");
if (cur == end || *cur < '1' || *cur++ > '9')
return GRPC_ERROR_CREATE("Expected status code");
if (cur == end || *cur < '0' || *cur++ > '9')
return GRPC_ERROR_CREATE("Expected status code");
if (cur == end || *cur < '0' || *cur++ > '9')
return GRPC_ERROR_CREATE("Expected status code");
parser->http.response->status =
(cur[-3] - '0') * 100 + (cur[-2] - '0') * 10 + (cur[-1] - '0');
if (cur == end || *cur++ != ' ') return GRPC_ERROR_CREATE("Expected ' '");
/* we don't really care about the status code message */
return GRPC_ERROR_NONE;
}
static grpc_error *handle_request_line(grpc_http_parser *parser) {
uint8_t *beg = parser->cur_line;
uint8_t *cur = beg;
uint8_t *end = beg + parser->cur_line_length;
uint8_t vers_major = 0;
uint8_t vers_minor = 0;
while (cur != end && *cur++ != ' ')
;
if (cur == end) return GRPC_ERROR_CREATE("No method on HTTP request line");
parser->http.request->method = buf2str(beg, (size_t)(cur - beg - 1));
beg = cur;
while (cur != end && *cur++ != ' ')
;
if (cur == end) return GRPC_ERROR_CREATE("No path on HTTP request line");
parser->http.request->path = buf2str(beg, (size_t)(cur - beg - 1));
if (cur == end || *cur++ != 'H') return GRPC_ERROR_CREATE("Expected 'H'");
if (cur == end || *cur++ != 'T') return GRPC_ERROR_CREATE("Expected 'T'");
if (cur == end || *cur++ != 'T') return GRPC_ERROR_CREATE("Expected 'T'");
if (cur == end || *cur++ != 'P') return GRPC_ERROR_CREATE("Expected 'P'");
if (cur == end || *cur++ != '/') return GRPC_ERROR_CREATE("Expected '/'");
vers_major = (uint8_t)(*cur++ - '1' + 1);
++cur;
if (cur == end)
return GRPC_ERROR_CREATE("End of line in HTTP version string");
vers_minor = (uint8_t)(*cur++ - '1' + 1);
if (vers_major == 1) {
if (vers_minor == 0) {
parser->http.request->version = GRPC_HTTP_HTTP10;
} else if (vers_minor == 1) {
parser->http.request->version = GRPC_HTTP_HTTP11;
} else {
return GRPC_ERROR_CREATE(
"Expected one of HTTP/1.0, HTTP/1.1, or HTTP/2.0");
}
} else if (vers_major == 2) {
if (vers_minor == 0) {
parser->http.request->version = GRPC_HTTP_HTTP20;
} else {
return GRPC_ERROR_CREATE(
"Expected one of HTTP/1.0, HTTP/1.1, or HTTP/2.0");
}
} else {
return GRPC_ERROR_CREATE("Expected one of HTTP/1.0, HTTP/1.1, or HTTP/2.0");
}
return GRPC_ERROR_NONE;
}
static grpc_error *handle_first_line(grpc_http_parser *parser) {
switch (parser->type) {
case GRPC_HTTP_REQUEST:
return handle_request_line(parser);
case GRPC_HTTP_RESPONSE:
return handle_response_line(parser);
}
GPR_UNREACHABLE_CODE(return GRPC_ERROR_CREATE("Should never reach here"));
}
static grpc_error *add_header(grpc_http_parser *parser) {
uint8_t *beg = parser->cur_line;
uint8_t *cur = beg;
uint8_t *end = beg + parser->cur_line_length;
size_t *hdr_count = NULL;
grpc_http_header **hdrs = NULL;
grpc_http_header hdr = {NULL, NULL};
grpc_error *error = GRPC_ERROR_NONE;
GPR_ASSERT(cur != end);
if (*cur == ' ' || *cur == '\t') {
error = GRPC_ERROR_CREATE("Continued header lines not supported yet");
goto done;
}
while (cur != end && *cur != ':') {
cur++;
}
if (cur == end) {
<<<<<<< HEAD
error = GRPC_ERROR_CREATE("Didn't find ':' in header string");
goto done;
=======
if (grpc_http1_trace) {
gpr_log(GPR_ERROR, "Didn't find ':' in header string");
}
goto error;
>>>>>>> a709afe241d8b264a1c326315f757b4a8d330207
}
GPR_ASSERT(cur >= beg);
hdr.key = buf2str(beg, (size_t)(cur - beg));
cur++; /* skip : */
while (cur != end && (*cur == ' ' || *cur == '\t')) {
cur++;
}
GPR_ASSERT((size_t)(end - cur) >= parser->cur_line_end_length);
hdr.value = buf2str(cur, (size_t)(end - cur) - parser->cur_line_end_length);
switch (parser->type) {
case GRPC_HTTP_RESPONSE:
hdr_count = &parser->http.response->hdr_count;
hdrs = &parser->http.response->hdrs;
break;
case GRPC_HTTP_REQUEST:
hdr_count = &parser->http.request->hdr_count;
hdrs = &parser->http.request->hdrs;
break;
}
if (*hdr_count == parser->hdr_capacity) {
parser->hdr_capacity =
GPR_MAX(parser->hdr_capacity + 1, parser->hdr_capacity * 3 / 2);
*hdrs = gpr_realloc(*hdrs, parser->hdr_capacity * sizeof(**hdrs));
}
(*hdrs)[(*hdr_count)++] = hdr;
done:
if (error != GRPC_ERROR_NONE) {
gpr_free(hdr.key);
gpr_free(hdr.value);
}
return error;
}
static grpc_error *finish_line(grpc_http_parser *parser) {
grpc_error *err;
switch (parser->state) {
case GRPC_HTTP_FIRST_LINE:
err = handle_first_line(parser);
if (err != GRPC_ERROR_NONE) return err;
parser->state = GRPC_HTTP_HEADERS;
break;
case GRPC_HTTP_HEADERS:
if (parser->cur_line_length == parser->cur_line_end_length) {
parser->state = GRPC_HTTP_BODY;
break;
}
err = add_header(parser);
if (err != GRPC_ERROR_NONE) {
return err;
}
break;
case GRPC_HTTP_BODY:
GPR_UNREACHABLE_CODE(return GRPC_ERROR_CREATE("Should never reach here"));
}
parser->cur_line_length = 0;
return GRPC_ERROR_NONE;
}
static grpc_error *addbyte_body(grpc_http_parser *parser, uint8_t byte) {
size_t *body_length = NULL;
char **body = NULL;
if (parser->type == GRPC_HTTP_RESPONSE) {
body_length = &parser->http.response->body_length;
body = &parser->http.response->body;
} else if (parser->type == GRPC_HTTP_REQUEST) {
body_length = &parser->http.request->body_length;
body = &parser->http.request->body;
} else {
GPR_UNREACHABLE_CODE(return GRPC_ERROR_CREATE("Should never reach here"));
}
if (*body_length == parser->body_capacity) {
parser->body_capacity = GPR_MAX(8, parser->body_capacity * 3 / 2);
*body = gpr_realloc((void *)*body, parser->body_capacity);
}
(*body)[*body_length] = (char)byte;
(*body_length)++;
return GRPC_ERROR_NONE;
}
static bool check_line(grpc_http_parser *parser) {
if (parser->cur_line_length >= 2 &&
parser->cur_line[parser->cur_line_length - 2] == '\r' &&
parser->cur_line[parser->cur_line_length - 1] == '\n') {
return true;
}
// HTTP request with \n\r line termiantors.
else if (parser->cur_line_length >= 2 &&
parser->cur_line[parser->cur_line_length - 2] == '\n' &&
parser->cur_line[parser->cur_line_length - 1] == '\r') {
return true;
}
// HTTP request with only \n line terminators.
else if (parser->cur_line_length >= 1 &&
parser->cur_line[parser->cur_line_length - 1] == '\n') {
parser->cur_line_end_length = 1;
return true;
}
return false;
}
static grpc_error *addbyte(grpc_http_parser *parser, uint8_t byte) {
switch (parser->state) {
case GRPC_HTTP_FIRST_LINE:
case GRPC_HTTP_HEADERS:
if (parser->cur_line_length >= GRPC_HTTP_PARSER_MAX_HEADER_LENGTH) {
if (grpc_http1_trace)
gpr_log(GPR_ERROR, "HTTP client max line length (%d) exceeded",
GRPC_HTTP_PARSER_MAX_HEADER_LENGTH);
return 0;
}
parser->cur_line[parser->cur_line_length] = byte;
parser->cur_line_length++;
if (check_line(parser)) {
return finish_line(parser);
} else {
return GRPC_ERROR_NONE;
}
GPR_UNREACHABLE_CODE(return 0);
case GRPC_HTTP_BODY:
return addbyte_body(parser, byte);
}
GPR_UNREACHABLE_CODE(return 0);
}
void grpc_http_parser_init(grpc_http_parser *parser, grpc_http_type type,
void *request_or_response) {
memset(parser, 0, sizeof(*parser));
parser->state = GRPC_HTTP_FIRST_LINE;
parser->type = type;
parser->http.request_or_response = request_or_response;
parser->cur_line_end_length = 2;
}
void grpc_http_parser_destroy(grpc_http_parser *parser) {}
void grpc_http_request_destroy(grpc_http_request *request) {
size_t i;
gpr_free(request->body);
for (i = 0; i < request->hdr_count; i++) {
gpr_free(request->hdrs[i].key);
gpr_free(request->hdrs[i].value);
}
gpr_free(request->hdrs);
gpr_free(request->method);
gpr_free(request->path);
}
void grpc_http_response_destroy(grpc_http_response *response) {
size_t i;
gpr_free(response->body);
for (i = 0; i < response->hdr_count; i++) {
gpr_free(response->hdrs[i].key);
gpr_free(response->hdrs[i].value);
}
gpr_free(response->hdrs);
}
grpc_error *grpc_http_parser_parse(grpc_http_parser *parser, gpr_slice slice) {
size_t i;
for (i = 0; i < GPR_SLICE_LENGTH(slice); i++) {
grpc_error *err = addbyte(parser, GPR_SLICE_START_PTR(slice)[i]);
if (err != GRPC_ERROR_NONE) return err;
}
return GRPC_ERROR_NONE;
}
grpc_error *grpc_http_parser_eof(grpc_http_parser *parser) {
if (parser->state != GRPC_HTTP_BODY) {
return GRPC_ERROR_CREATE("Did not finish headers");
}
return GRPC_ERROR_NONE;
}
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