diff options
Diffstat (limited to 'src/core/lib/surface/validate_metadata.c')
-rw-r--r-- | src/core/lib/surface/validate_metadata.c | 61 |
1 files changed, 15 insertions, 46 deletions
diff --git a/src/core/lib/surface/validate_metadata.c b/src/core/lib/surface/validate_metadata.c index 7ec9137265..f49dd8584b 100644 --- a/src/core/lib/surface/validate_metadata.c +++ b/src/core/lib/surface/validate_metadata.c @@ -34,71 +34,40 @@ #include <stdlib.h> #include <string.h> -#include <grpc/grpc.h> -#include <grpc/support/alloc.h> #include <grpc/support/port_platform.h> -#include "src/core/lib/iomgr/error.h" -#include "src/core/lib/slice/slice_string_helpers.h" - -static grpc_error *conforms_to(grpc_slice slice, const uint8_t *legal_bits, - const char *err_desc) { - const uint8_t *p = GRPC_SLICE_START_PTR(slice); - const uint8_t *e = GRPC_SLICE_END_PTR(slice); +static int conforms_to(const char *s, size_t len, const uint8_t *legal_bits) { + const char *p = s; + const char *e = s + len; for (; p != e; p++) { - int idx = *p; + int idx = (uint8_t)*p; int byte = idx / 8; int bit = idx % 8; - if ((legal_bits[byte] & (1 << bit)) == 0) { - char *dump = grpc_dump_slice(slice, GPR_DUMP_HEX | GPR_DUMP_ASCII); - grpc_error *error = grpc_error_set_str( - grpc_error_set_int(GRPC_ERROR_CREATE(err_desc), GRPC_ERROR_INT_OFFSET, - p - GRPC_SLICE_START_PTR(slice)), - GRPC_ERROR_STR_RAW_BYTES, dump); - gpr_free(dump); - return error; - } + if ((legal_bits[byte] & (1 << bit)) == 0) return 0; } - return GRPC_ERROR_NONE; -} - -static int error2int(grpc_error *error) { - int r = (error == GRPC_ERROR_NONE); - GRPC_ERROR_UNREF(error); - return r; + return 1; } -grpc_error *grpc_validate_header_key_is_legal(grpc_slice slice) { +int grpc_header_key_is_legal(const char *key, size_t length) { static const uint8_t legal_header_bits[256 / 8] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x60, 0xff, 0x03, 0x00, 0x00, 0x00, 0x80, 0xfe, 0xff, 0xff, 0x07, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}; - if (GRPC_SLICE_LENGTH(slice) == 0) { - return GRPC_ERROR_CREATE("Metadata keys cannot be zero length"); - } - if (GRPC_SLICE_START_PTR(slice)[0] == ':') { - return GRPC_ERROR_CREATE("Metadata keys cannot start with :"); + if (length == 0 || key[0] == ':') { + return 0; } - return conforms_to(slice, legal_header_bits, "Illegal header key"); + return conforms_to(key, length, legal_header_bits); } -int grpc_header_key_is_legal(grpc_slice slice) { - return error2int(grpc_validate_header_key_is_legal(slice)); -} - -grpc_error *grpc_validate_header_nonbin_value_is_legal(grpc_slice slice) { +int grpc_header_nonbin_value_is_legal(const char *value, size_t length) { static const uint8_t legal_header_bits[256 / 8] = { 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x7f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}; - return conforms_to(slice, legal_header_bits, "Illegal header value"); -} - -int grpc_header_nonbin_value_is_legal(grpc_slice slice) { - return error2int(grpc_validate_header_nonbin_value_is_legal(slice)); + return conforms_to(value, length, legal_header_bits); } -int grpc_is_binary_header(grpc_slice slice) { - if (GRPC_SLICE_LENGTH(slice) < 5) return 0; - return 0 == memcmp(GRPC_SLICE_END_PTR(slice) - 4, "-bin", 4); +int grpc_is_binary_header(const char *key, size_t length) { + if (length < 5) return 0; + return 0 == memcmp(key + length - 4, "-bin", 4); } |