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Diffstat (limited to 'src/core/lib/http/parser.c')
-rw-r--r--src/core/lib/http/parser.c245
1 files changed, 127 insertions, 118 deletions
diff --git a/src/core/lib/http/parser.c b/src/core/lib/http/parser.c
index a7efb5e73e..92ed08ae51 100644
--- a/src/core/lib/http/parser.c
+++ b/src/core/lib/http/parser.c
@@ -48,37 +48,38 @@ static char *buf2str(void *buffer, size_t length) {
return out;
}
-static int handle_response_line(grpc_http_parser *parser) {
+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') goto error;
- if (cur == end || *cur++ != 'T') goto error;
- if (cur == end || *cur++ != 'T') goto error;
- if (cur == end || *cur++ != 'P') goto error;
- if (cur == end || *cur++ != '/') goto error;
- if (cur == end || *cur++ != '1') goto error;
- if (cur == end || *cur++ != '.') goto error;
- if (cur == end || *cur < '0' || *cur++ > '1') goto error;
- if (cur == end || *cur++ != ' ') goto error;
- if (cur == end || *cur < '1' || *cur++ > '9') goto error;
- if (cur == end || *cur < '0' || *cur++ > '9') goto error;
- if (cur == end || *cur < '0' || *cur++ > '9') goto error;
- parser->http.response.status =
+ 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++ != ' ') goto error;
+ if (cur == end || *cur++ != ' ') return GRPC_ERROR_CREATE("Expected ' '");
/* we don't really care about the status code message */
- return 1;
-
-error:
- if (grpc_http1_trace) gpr_log(GPR_ERROR, "Failed parsing response line");
- return 0;
+ return GRPC_ERROR_NONE;
}
-static int handle_request_line(grpc_http_parser *parser) {
+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;
@@ -87,83 +88,81 @@ static int handle_request_line(grpc_http_parser *parser) {
while (cur != end && *cur++ != ' ')
;
- if (cur == end) goto error;
- parser->http.request.method = buf2str(beg, (size_t)(cur - beg - 1));
+ 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) goto error;
- parser->http.request.path = buf2str(beg, (size_t)(cur - beg - 1));
-
- if (cur == end || *cur++ != 'H') goto error;
- if (cur == end || *cur++ != 'T') goto error;
- if (cur == end || *cur++ != 'T') goto error;
- if (cur == end || *cur++ != 'P') goto error;
- if (cur == end || *cur++ != '/') goto error;
+ 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) goto error;
+ 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;
+ parser->http.request->version = GRPC_HTTP_HTTP10;
} else if (vers_minor == 1) {
- parser->http.request.version = GRPC_HTTP_HTTP11;
+ parser->http.request->version = GRPC_HTTP_HTTP11;
} else {
- goto error;
+ 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;
+ parser->http.request->version = GRPC_HTTP_HTTP20;
} else {
- goto error;
+ return GRPC_ERROR_CREATE(
+ "Expected one of HTTP/1.0, HTTP/1.1, or HTTP/2.0");
}
} else {
- goto error;
+ return GRPC_ERROR_CREATE("Expected one of HTTP/1.0, HTTP/1.1, or HTTP/2.0");
}
- return 1;
-
-error:
- if (grpc_http1_trace) gpr_log(GPR_ERROR, "Failed parsing request line");
- return 0;
+ return GRPC_ERROR_NONE;
}
-static int handle_first_line(grpc_http_parser *parser) {
- if (parser->cur_line[0] == 'H') {
- parser->type = GRPC_HTTP_RESPONSE;
- return handle_response_line(parser);
- } else {
- parser->type = GRPC_HTTP_REQUEST;
- return handle_request_line(parser);
+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 int add_header(grpc_http_parser *parser) {
+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') {
- if (grpc_http1_trace)
- gpr_log(GPR_ERROR, "Continued header lines not supported yet");
- goto error;
+ error = GRPC_ERROR_CREATE("Continued header lines not supported yet");
+ goto done;
}
while (cur != end && *cur != ':') {
cur++;
}
if (cur == end) {
- if (grpc_http1_trace)
- gpr_log(GPR_ERROR, "Didn't find ':' in header string");
- goto error;
+ error = GRPC_ERROR_CREATE("Didn't find ':' in header string");
+ goto done;
}
GPR_ASSERT(cur >= beg);
hdr.key = buf2str(beg, (size_t)(cur - beg));
@@ -175,14 +174,15 @@ static int add_header(grpc_http_parser *parser) {
GPR_ASSERT((size_t)(end - cur) >= parser->cur_line_end_length);
hdr.value = buf2str(cur, (size_t)(end - cur) - parser->cur_line_end_length);
- if (parser->type == GRPC_HTTP_RESPONSE) {
- hdr_count = &parser->http.response.hdr_count;
- hdrs = &parser->http.response.hdrs;
- } else if (parser->type == GRPC_HTTP_REQUEST) {
- hdr_count = &parser->http.request.hdr_count;
- hdrs = &parser->http.request.hdrs;
- } else {
- return 0;
+ 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) {
@@ -191,20 +191,21 @@ static int add_header(grpc_http_parser *parser) {
*hdrs = gpr_realloc(*hdrs, parser->hdr_capacity * sizeof(**hdrs));
}
(*hdrs)[(*hdr_count)++] = hdr;
- return 1;
-error:
- gpr_free(hdr.key);
- gpr_free(hdr.value);
- return 0;
+done:
+ if (error != GRPC_ERROR_NONE) {
+ gpr_free(hdr.key);
+ gpr_free(hdr.value);
+ }
+ return error;
}
-static int finish_line(grpc_http_parser *parser) {
+static grpc_error *finish_line(grpc_http_parser *parser) {
+ grpc_error *err;
switch (parser->state) {
case GRPC_HTTP_FIRST_LINE:
- if (!handle_first_line(parser)) {
- return 0;
- }
+ err = handle_first_line(parser);
+ if (err != GRPC_ERROR_NONE) return err;
parser->state = GRPC_HTTP_HEADERS;
break;
case GRPC_HTTP_HEADERS:
@@ -212,30 +213,31 @@ static int finish_line(grpc_http_parser *parser) {
parser->state = GRPC_HTTP_BODY;
break;
}
- if (!add_header(parser)) {
- return 0;
+ err = add_header(parser);
+ if (err != GRPC_ERROR_NONE) {
+ return err;
}
break;
case GRPC_HTTP_BODY:
- GPR_UNREACHABLE_CODE(return 0);
+ GPR_UNREACHABLE_CODE(return GRPC_ERROR_CREATE("Should never reach here"));
}
parser->cur_line_length = 0;
- return 1;
+ return GRPC_ERROR_NONE;
}
-static int addbyte_body(grpc_http_parser *parser, uint8_t byte) {
+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;
+ 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;
+ body_length = &parser->http.request->body_length;
+ body = &parser->http.request->body;
} else {
- return 0;
+ GPR_UNREACHABLE_CODE(return GRPC_ERROR_CREATE("Should never reach here"));
}
if (*body_length == parser->body_capacity) {
@@ -245,34 +247,34 @@ static int addbyte_body(grpc_http_parser *parser, uint8_t byte) {
(*body)[*body_length] = (char)byte;
(*body_length)++;
- return 1;
+ return GRPC_ERROR_NONE;
}
-static int check_line(grpc_http_parser *parser) {
+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 1;
+ 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 1;
+ 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 1;
+ return true;
}
- return 0;
+ return false;
}
-static int addbyte(grpc_http_parser *parser, uint8_t byte) {
+static grpc_error *addbyte(grpc_http_parser *parser, uint8_t byte) {
switch (parser->state) {
case GRPC_HTTP_FIRST_LINE:
case GRPC_HTTP_HEADERS:
@@ -287,7 +289,7 @@ static int addbyte(grpc_http_parser *parser, uint8_t byte) {
if (check_line(parser)) {
return finish_line(parser);
} else {
- return 1;
+ return GRPC_ERROR_NONE;
}
GPR_UNREACHABLE_CODE(return 0);
case GRPC_HTTP_BODY:
@@ -296,46 +298,53 @@ static int addbyte(grpc_http_parser *parser, uint8_t byte) {
GPR_UNREACHABLE_CODE(return 0);
}
-void grpc_http_parser_init(grpc_http_parser *parser) {
+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 = GRPC_HTTP_UNKNOWN;
+ 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_parser_destroy(grpc_http_parser *parser) {}
+
+void grpc_http_request_destroy(grpc_http_request *request) {
size_t i;
- if (parser->type == GRPC_HTTP_RESPONSE) {
- gpr_free(parser->http.response.body);
- for (i = 0; i < parser->http.response.hdr_count; i++) {
- gpr_free(parser->http.response.hdrs[i].key);
- gpr_free(parser->http.response.hdrs[i].value);
- }
- gpr_free(parser->http.response.hdrs);
- } else if (parser->type == GRPC_HTTP_REQUEST) {
- gpr_free(parser->http.request.body);
- for (i = 0; i < parser->http.request.hdr_count; i++) {
- gpr_free(parser->http.request.hdrs[i].key);
- gpr_free(parser->http.request.hdrs[i].value);
- }
- gpr_free(parser->http.request.hdrs);
- gpr_free(parser->http.request.method);
- gpr_free(parser->http.request.path);
+ 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);
}
-int grpc_http_parser_parse(grpc_http_parser *parser, gpr_slice slice) {
+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++) {
- if (!addbyte(parser, GPR_SLICE_START_PTR(slice)[i])) {
- return 0;
- }
+ grpc_error *err = addbyte(parser, GPR_SLICE_START_PTR(slice)[i]);
+ if (err != GRPC_ERROR_NONE) return err;
}
- return 1;
+ return GRPC_ERROR_NONE;
}
-int grpc_http_parser_eof(grpc_http_parser *parser) {
- return parser->state == GRPC_HTTP_BODY;
+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;
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-15 11:11:17 +0000