One Level Up
Top Level
src/http/modules/ngx_http_grpc_module.c - nginx source code
Global variables defined
Data types defined
Functions defined
Source code
- #include <ngx_config.h>
- #include <ngx_core.h>
- #include <ngx_http.h>
- typedef struct {
- ngx_array_t *flushes;
- ngx_array_t *lengths;
- ngx_array_t *values;
- ngx_hash_t hash;
- } ngx_http_grpc_headers_t;
- typedef struct {
- ngx_http_upstream_conf_t upstream;
- ngx_http_grpc_headers_t headers;
- ngx_array_t *headers_source;
- ngx_str_t host;
- ngx_uint_t host_set;
- ngx_array_t *grpc_lengths;
- ngx_array_t *grpc_values;
- #if (NGX_HTTP_SSL)
- ngx_uint_t ssl;
- ngx_uint_t ssl_protocols;
- ngx_str_t ssl_ciphers;
- ngx_uint_t ssl_verify_depth;
- ngx_str_t ssl_trusted_certificate;
- ngx_str_t ssl_crl;
- ngx_array_t *ssl_conf_commands;
- #endif
- } ngx_http_grpc_loc_conf_t;
- typedef enum {
- ngx_http_grpc_st_start = 0,
- ngx_http_grpc_st_length_2,
- ngx_http_grpc_st_length_3,
- ngx_http_grpc_st_type,
- ngx_http_grpc_st_flags,
- ngx_http_grpc_st_stream_id,
- ngx_http_grpc_st_stream_id_2,
- ngx_http_grpc_st_stream_id_3,
- ngx_http_grpc_st_stream_id_4,
- ngx_http_grpc_st_payload,
- ngx_http_grpc_st_padding
- } ngx_http_grpc_state_e;
- typedef struct {
- size_t init_window;
- size_t send_window;
- size_t recv_window;
- ngx_uint_t last_stream_id;
- } ngx_http_grpc_conn_t;
- typedef struct {
- ngx_http_grpc_state_e state;
- ngx_uint_t frame_state;
- ngx_uint_t fragment_state;
- ngx_chain_t *in;
- ngx_chain_t *out;
- ngx_chain_t *free;
- ngx_chain_t *busy;
- ngx_http_grpc_conn_t *connection;
- ngx_uint_t id;
- ngx_uint_t pings;
- ngx_uint_t settings;
- off_t length;
- ssize_t send_window;
- size_t recv_window;
- size_t rest;
- ngx_uint_t stream_id;
- u_char type;
- u_char flags;
- u_char padding;
- ngx_uint_t error;
- ngx_uint_t window_update;
- ngx_uint_t setting_id;
- ngx_uint_t setting_value;
- u_char ping_data[8];
- ngx_uint_t index;
- ngx_str_t name;
- ngx_str_t value;
- u_char *field_end;
- size_t field_length;
- size_t field_rest;
- u_char field_state;
- unsigned literal:1;
- unsigned field_huffman:1;
- unsigned header_sent:1;
- unsigned output_closed:1;
- unsigned output_blocked:1;
- unsigned parsing_headers:1;
- unsigned end_stream:1;
- unsigned done:1;
- unsigned status:1;
- unsigned rst:1;
- unsigned goaway:1;
- ngx_http_request_t *request;
- ngx_str_t host;
- } ngx_http_grpc_ctx_t;
- typedef struct {
- u_char length_0;
- u_char length_1;
- u_char length_2;
- u_char type;
- u_char flags;
- u_char stream_id_0;
- u_char stream_id_1;
- u_char stream_id_2;
- u_char stream_id_3;
- } ngx_http_grpc_frame_t;
- static ngx_int_t ngx_http_grpc_eval(ngx_http_request_t *r,
- ngx_http_grpc_ctx_t *ctx, ngx_http_grpc_loc_conf_t *glcf);
- static ngx_int_t ngx_http_grpc_create_request(ngx_http_request_t *r);
- static ngx_int_t ngx_http_grpc_reinit_request(ngx_http_request_t *r);
- static ngx_int_t ngx_http_grpc_body_output_filter(void *data, ngx_chain_t *in);
- static ngx_int_t ngx_http_grpc_process_header(ngx_http_request_t *r);
- static ngx_int_t ngx_http_grpc_filter_init(void *data);
- static ngx_int_t ngx_http_grpc_filter(void *data, ssize_t bytes);
- static ngx_int_t ngx_http_grpc_parse_frame(ngx_http_request_t *r,
- ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b);
- static ngx_int_t ngx_http_grpc_parse_header(ngx_http_request_t *r,
- ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b);
- static ngx_int_t ngx_http_grpc_parse_fragment(ngx_http_request_t *r,
- ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b);
- static ngx_int_t ngx_http_grpc_validate_header_name(ngx_http_request_t *r,
- ngx_str_t *s);
- static ngx_int_t ngx_http_grpc_validate_header_value(ngx_http_request_t *r,
- ngx_str_t *s);
- static ngx_int_t ngx_http_grpc_parse_rst_stream(ngx_http_request_t *r,
- ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b);
- static ngx_int_t ngx_http_grpc_parse_goaway(ngx_http_request_t *r,
- ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b);
- static ngx_int_t ngx_http_grpc_parse_window_update(ngx_http_request_t *r,
- ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b);
- static ngx_int_t ngx_http_grpc_parse_settings(ngx_http_request_t *r,
- ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b);
- static ngx_int_t ngx_http_grpc_parse_ping(ngx_http_request_t *r,
- ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b);
- static ngx_int_t ngx_http_grpc_send_settings_ack(ngx_http_request_t *r,
- ngx_http_grpc_ctx_t *ctx);
- static ngx_int_t ngx_http_grpc_send_ping_ack(ngx_http_request_t *r,
- ngx_http_grpc_ctx_t *ctx);
- static ngx_int_t ngx_http_grpc_send_window_update(ngx_http_request_t *r,
- ngx_http_grpc_ctx_t *ctx);
- static ngx_chain_t *ngx_http_grpc_get_buf(ngx_http_request_t *r,
- ngx_http_grpc_ctx_t *ctx);
- static ngx_http_grpc_ctx_t *ngx_http_grpc_get_ctx(ngx_http_request_t *r);
- static ngx_int_t ngx_http_grpc_get_connection_data(ngx_http_request_t *r,
- ngx_http_grpc_ctx_t *ctx, ngx_peer_connection_t *pc);
- static void ngx_http_grpc_cleanup(void *data);
- static void ngx_http_grpc_abort_request(ngx_http_request_t *r);
- static void ngx_http_grpc_finalize_request(ngx_http_request_t *r,
- ngx_int_t rc);
- static ngx_int_t ngx_http_grpc_internal_trailers_variable(
- ngx_http_request_t *r, ngx_http_variable_value_t *v, uintptr_t data);
- static ngx_int_t ngx_http_grpc_add_variables(ngx_conf_t *cf);
- static void *ngx_http_grpc_create_loc_conf(ngx_conf_t *cf);
- static char *ngx_http_grpc_merge_loc_conf(ngx_conf_t *cf,
- void *parent, void *child);
- static ngx_int_t ngx_http_grpc_init_headers(ngx_conf_t *cf,
- ngx_http_grpc_loc_conf_t *conf, ngx_http_grpc_headers_t *headers,
- ngx_keyval_t *default_headers);
- static char *ngx_http_grpc_pass(ngx_conf_t *cf, ngx_command_t *cmd,
- void *conf);
- #if (NGX_HTTP_SSL)
- static char *ngx_http_grpc_ssl_password_file(ngx_conf_t *cf,
- ngx_command_t *cmd, void *conf);
- static char *ngx_http_grpc_ssl_conf_command_check(ngx_conf_t *cf, void *post,
- void *data);
- static ngx_int_t ngx_http_grpc_merge_ssl(ngx_conf_t *cf,
- ngx_http_grpc_loc_conf_t *conf, ngx_http_grpc_loc_conf_t *prev);
- static ngx_int_t ngx_http_grpc_set_ssl(ngx_conf_t *cf,
- ngx_http_grpc_loc_conf_t *glcf);
- #endif
- static ngx_conf_bitmask_t ngx_http_grpc_next_upstream_masks[] = {
- { ngx_string("error"), NGX_HTTP_UPSTREAM_FT_ERROR },
- { ngx_string("timeout"), NGX_HTTP_UPSTREAM_FT_TIMEOUT },
- { ngx_string("invalid_header"), NGX_HTTP_UPSTREAM_FT_INVALID_HEADER },
- { ngx_string("non_idempotent"), NGX_HTTP_UPSTREAM_FT_NON_IDEMPOTENT },
- { ngx_string("http_500"), NGX_HTTP_UPSTREAM_FT_HTTP_500 },
- { ngx_string("http_502"), NGX_HTTP_UPSTREAM_FT_HTTP_502 },
- { ngx_string("http_503"), NGX_HTTP_UPSTREAM_FT_HTTP_503 },
- { ngx_string("http_504"), NGX_HTTP_UPSTREAM_FT_HTTP_504 },
- { ngx_string("http_403"), NGX_HTTP_UPSTREAM_FT_HTTP_403 },
- { ngx_string("http_404"), NGX_HTTP_UPSTREAM_FT_HTTP_404 },
- { ngx_string("http_429"), NGX_HTTP_UPSTREAM_FT_HTTP_429 },
- { ngx_string("off"), NGX_HTTP_UPSTREAM_FT_OFF },
- { ngx_null_string, 0 }
- };
- #if (NGX_HTTP_SSL)
- static ngx_conf_bitmask_t ngx_http_grpc_ssl_protocols[] = {
- { ngx_string("SSLv2"), NGX_SSL_SSLv2 },
- { ngx_string("SSLv3"), NGX_SSL_SSLv3 },
- { ngx_string("TLSv1"), NGX_SSL_TLSv1 },
- { ngx_string("TLSv1.1"), NGX_SSL_TLSv1_1 },
- { ngx_string("TLSv1.2"), NGX_SSL_TLSv1_2 },
- { ngx_string("TLSv1.3"), NGX_SSL_TLSv1_3 },
- { ngx_null_string, 0 }
- };
- static ngx_conf_post_t ngx_http_grpc_ssl_conf_command_post =
- { ngx_http_grpc_ssl_conf_command_check };
- #endif
- static ngx_command_t ngx_http_grpc_commands[] = {
- { ngx_string("grpc_pass"),
- NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF|NGX_CONF_TAKE1,
- ngx_http_grpc_pass,
- NGX_HTTP_LOC_CONF_OFFSET,
- 0,
- NULL },
- { ngx_string("grpc_bind"),
- NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE12,
- ngx_http_upstream_bind_set_slot,
- NGX_HTTP_LOC_CONF_OFFSET,
- offsetof(ngx_http_grpc_loc_conf_t, upstream.local),
- NULL },
- { ngx_string("grpc_socket_keepalive"),
- NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
- ngx_conf_set_flag_slot,
- NGX_HTTP_LOC_CONF_OFFSET,
- offsetof(ngx_http_grpc_loc_conf_t, upstream.socket_keepalive),
- NULL },
- { ngx_string("grpc_connect_timeout"),
- NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
- ngx_conf_set_msec_slot,
- NGX_HTTP_LOC_CONF_OFFSET,
- offsetof(ngx_http_grpc_loc_conf_t, upstream.connect_timeout),
- NULL },
- { ngx_string("grpc_send_timeout"),
- NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
- ngx_conf_set_msec_slot,
- NGX_HTTP_LOC_CONF_OFFSET,
- offsetof(ngx_http_grpc_loc_conf_t, upstream.send_timeout),
- NULL },
- { ngx_string("grpc_intercept_errors"),
- NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
- ngx_conf_set_flag_slot,
- NGX_HTTP_LOC_CONF_OFFSET,
- offsetof(ngx_http_grpc_loc_conf_t, upstream.intercept_errors),
- NULL },
- { ngx_string("grpc_buffer_size"),
- NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
- ngx_conf_set_size_slot,
- NGX_HTTP_LOC_CONF_OFFSET,
- offsetof(ngx_http_grpc_loc_conf_t, upstream.buffer_size),
- NULL },
- { ngx_string("grpc_read_timeout"),
- NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
- ngx_conf_set_msec_slot,
- NGX_HTTP_LOC_CONF_OFFSET,
- offsetof(ngx_http_grpc_loc_conf_t, upstream.read_timeout),
- NULL },
- { ngx_string("grpc_next_upstream"),
- NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE,
- ngx_conf_set_bitmask_slot,
- NGX_HTTP_LOC_CONF_OFFSET,
- offsetof(ngx_http_grpc_loc_conf_t, upstream.next_upstream),
- &ngx_http_grpc_next_upstream_masks },
- { ngx_string("grpc_next_upstream_tries"),
- NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
- ngx_conf_set_num_slot,
- NGX_HTTP_LOC_CONF_OFFSET,
- offsetof(ngx_http_grpc_loc_conf_t, upstream.next_upstream_tries),
- NULL },
- { ngx_string("grpc_next_upstream_timeout"),
- NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
- ngx_conf_set_msec_slot,
- NGX_HTTP_LOC_CONF_OFFSET,
- offsetof(ngx_http_grpc_loc_conf_t, upstream.next_upstream_timeout),
- NULL },
- { ngx_string("grpc_set_header"),
- NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE2,
- ngx_conf_set_keyval_slot,
- NGX_HTTP_LOC_CONF_OFFSET,
- offsetof(ngx_http_grpc_loc_conf_t, headers_source),
- NULL },
- { ngx_string("grpc_pass_header"),
- NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
- ngx_conf_set_str_array_slot,
- NGX_HTTP_LOC_CONF_OFFSET,
- offsetof(ngx_http_grpc_loc_conf_t, upstream.pass_headers),
- NULL },
- { ngx_string("grpc_hide_header"),
- NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
- ngx_conf_set_str_array_slot,
- NGX_HTTP_LOC_CONF_OFFSET,
- offsetof(ngx_http_grpc_loc_conf_t, upstream.hide_headers),
- NULL },
- { ngx_string("grpc_ignore_headers"),
- NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE,
- ngx_conf_set_bitmask_slot,
- NGX_HTTP_LOC_CONF_OFFSET,
- offsetof(ngx_http_grpc_loc_conf_t, upstream.ignore_headers),
- &ngx_http_upstream_ignore_headers_masks },
- #if (NGX_HTTP_SSL)
- { ngx_string("grpc_ssl_session_reuse"),
- NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
- ngx_conf_set_flag_slot,
- NGX_HTTP_LOC_CONF_OFFSET,
- offsetof(ngx_http_grpc_loc_conf_t, upstream.ssl_session_reuse),
- NULL },
- { ngx_string("grpc_ssl_protocols"),
- NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE,
- ngx_conf_set_bitmask_slot,
- NGX_HTTP_LOC_CONF_OFFSET,
- offsetof(ngx_http_grpc_loc_conf_t, ssl_protocols),
- &ngx_http_grpc_ssl_protocols },
- { ngx_string("grpc_ssl_ciphers"),
- NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
- ngx_conf_set_str_slot,
- NGX_HTTP_LOC_CONF_OFFSET,
- offsetof(ngx_http_grpc_loc_conf_t, ssl_ciphers),
- NULL },
- { ngx_string("grpc_ssl_name"),
- NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
- ngx_http_set_complex_value_slot,
- NGX_HTTP_LOC_CONF_OFFSET,
- offsetof(ngx_http_grpc_loc_conf_t, upstream.ssl_name),
- NULL },
- { ngx_string("grpc_ssl_server_name"),
- NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
- ngx_conf_set_flag_slot,
- NGX_HTTP_LOC_CONF_OFFSET,
- offsetof(ngx_http_grpc_loc_conf_t, upstream.ssl_server_name),
- NULL },
- { ngx_string("grpc_ssl_verify"),
- NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
- ngx_conf_set_flag_slot,
- NGX_HTTP_LOC_CONF_OFFSET,
- offsetof(ngx_http_grpc_loc_conf_t, upstream.ssl_verify),
- NULL },
- { ngx_string("grpc_ssl_verify_depth"),
- NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
- ngx_conf_set_num_slot,
- NGX_HTTP_LOC_CONF_OFFSET,
- offsetof(ngx_http_grpc_loc_conf_t, ssl_verify_depth),
- NULL },
- { ngx_string("grpc_ssl_trusted_certificate"),
- NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
- ngx_conf_set_str_slot,
- NGX_HTTP_LOC_CONF_OFFSET,
- offsetof(ngx_http_grpc_loc_conf_t, ssl_trusted_certificate),
- NULL },
- { ngx_string("grpc_ssl_crl"),
- NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
- ngx_conf_set_str_slot,
- NGX_HTTP_LOC_CONF_OFFSET,
- offsetof(ngx_http_grpc_loc_conf_t, ssl_crl),
- NULL },
- { ngx_string("grpc_ssl_certificate"),
- NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
- ngx_http_set_complex_value_zero_slot,
- NGX_HTTP_LOC_CONF_OFFSET,
- offsetof(ngx_http_grpc_loc_conf_t, upstream.ssl_certificate),
- NULL },
- { ngx_string("grpc_ssl_certificate_key"),
- NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
- ngx_http_set_complex_value_zero_slot,
- NGX_HTTP_LOC_CONF_OFFSET,
- offsetof(ngx_http_grpc_loc_conf_t, upstream.ssl_certificate_key),
- NULL },
- { ngx_string("grpc_ssl_password_file"),
- NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
- ngx_http_grpc_ssl_password_file,
- NGX_HTTP_LOC_CONF_OFFSET,
- 0,
- NULL },
- { ngx_string("grpc_ssl_conf_command"),
- NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE2,
- ngx_conf_set_keyval_slot,
- NGX_HTTP_LOC_CONF_OFFSET,
- offsetof(ngx_http_grpc_loc_conf_t, ssl_conf_commands),
- &ngx_http_grpc_ssl_conf_command_post },
- #endif
- ngx_null_command
- };
- static ngx_http_module_t ngx_http_grpc_module_ctx = {
- ngx_http_grpc_add_variables,
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- ngx_http_grpc_create_loc_conf,
- ngx_http_grpc_merge_loc_conf
- };
- ngx_module_t ngx_http_grpc_module = {
- NGX_MODULE_V1,
- &ngx_http_grpc_module_ctx,
- ngx_http_grpc_commands,
- NGX_HTTP_MODULE,
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- NGX_MODULE_V1_PADDING
- };
- static u_char ngx_http_grpc_connection_start[] =
- "PRI * HTTP/2.0\r\n\r\nSM\r\n\r\n"
- "\x00\x00\x12\x04\x00\x00\x00\x00\x00"
- "\x00\x01\x00\x00\x00\x00"
- "\x00\x02\x00\x00\x00\x00"
- "\x00\x04\x7f\xff\xff\xff"
- "\x00\x00\x04\x08\x00\x00\x00\x00\x00"
- "\x7f\xff\x00\x00";
- static ngx_keyval_t ngx_http_grpc_headers[] = {
- { ngx_string("Content-Length"), ngx_string("$content_length") },
- { ngx_string("TE"), ngx_string("$grpc_internal_trailers") },
- { ngx_string("Host"), ngx_string("") },
- { ngx_string("Connection"), ngx_string("") },
- { ngx_string("Transfer-Encoding"), ngx_string("") },
- { ngx_string("Keep-Alive"), ngx_string("") },
- { ngx_string("Expect"), ngx_string("") },
- { ngx_string("Upgrade"), ngx_string("") },
- { ngx_null_string, ngx_null_string }
- };
- static ngx_str_t ngx_http_grpc_hide_headers[] = {
- ngx_string("Date"),
- ngx_string("Server"),
- ngx_string("X-Accel-Expires"),
- ngx_string("X-Accel-Redirect"),
- ngx_string("X-Accel-Limit-Rate"),
- ngx_string("X-Accel-Buffering"),
- ngx_string("X-Accel-Charset"),
- ngx_null_string
- };
- static ngx_http_variable_t ngx_http_grpc_vars[] = {
- { ngx_string("grpc_internal_trailers"), NULL,
- ngx_http_grpc_internal_trailers_variable, 0,
- NGX_HTTP_VAR_NOCACHEABLE|NGX_HTTP_VAR_NOHASH, 0 },
- ngx_http_null_variable
- };
- static ngx_int_t
- ngx_http_grpc_handler(ngx_http_request_t *r)
- {
- ngx_int_t rc;
- ngx_http_upstream_t *u;
- ngx_http_grpc_ctx_t *ctx;
- ngx_http_grpc_loc_conf_t *glcf;
- if (ngx_http_upstream_create(r) != NGX_OK) {
- return NGX_HTTP_INTERNAL_SERVER_ERROR;
- }
- ctx = ngx_pcalloc(r->pool, sizeof(ngx_http_grpc_ctx_t));
- if (ctx == NULL) {
- return NGX_HTTP_INTERNAL_SERVER_ERROR;
- }
- ctx->request = r;
- ngx_http_set_ctx(r, ctx, ngx_http_grpc_module);
- glcf = ngx_http_get_module_loc_conf(r, ngx_http_grpc_module);
- u = r->upstream;
- if (glcf->grpc_lengths == NULL) {
- ctx->host = glcf->host;
- #if (NGX_HTTP_SSL)
- u->ssl = glcf->ssl;
- if (u->ssl) {
- ngx_str_set(&u->schema, "grpcs://");
- } else {
- ngx_str_set(&u->schema, "grpc://");
- }
- #else
- ngx_str_set(&u->schema, "grpc://");
- #endif
- } else {
- if (ngx_http_grpc_eval(r, ctx, glcf) != NGX_OK) {
- return NGX_HTTP_INTERNAL_SERVER_ERROR;
- }
- }
- u->output.tag = (ngx_buf_tag_t) &ngx_http_grpc_module;
- u->conf = &glcf->upstream;
- u->create_request = ngx_http_grpc_create_request;
- u->reinit_request = ngx_http_grpc_reinit_request;
- u->process_header = ngx_http_grpc_process_header;
- u->abort_request = ngx_http_grpc_abort_request;
- u->finalize_request = ngx_http_grpc_finalize_request;
- u->input_filter_init = ngx_http_grpc_filter_init;
- u->input_filter = ngx_http_grpc_filter;
- u->input_filter_ctx = ctx;
- r->request_body_no_buffering = 1;
- rc = ngx_http_read_client_request_body(r, ngx_http_upstream_init);
- if (rc >= NGX_HTTP_SPECIAL_RESPONSE) {
- return rc;
- }
- return NGX_DONE;
- }
- static ngx_int_t
- ngx_http_grpc_eval(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx,
- ngx_http_grpc_loc_conf_t *glcf)
- {
- size_t add;
- ngx_url_t url;
- ngx_http_upstream_t *u;
- ngx_memzero(&url, sizeof(ngx_url_t));
- if (ngx_http_script_run(r, &url.url, glcf->grpc_lengths->elts, 0,
- glcf->grpc_values->elts)
- == NULL)
- {
- return NGX_ERROR;
- }
- if (url.url.len > 7
- && ngx_strncasecmp(url.url.data, (u_char *) "grpc://", 7) == 0)
- {
- add = 7;
- } else if (url.url.len > 8
- && ngx_strncasecmp(url.url.data, (u_char *) "grpcs://", 8) == 0)
- {
- #if (NGX_HTTP_SSL)
- add = 8;
- r->upstream->ssl = 1;
- #else
- ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
- "grpcs protocol requires SSL support");
- return NGX_ERROR;
- #endif
- } else {
- add = 0;
- }
- u = r->upstream;
- if (add) {
- u->schema.len = add;
- u->schema.data = url.url.data;
- url.url.data += add;
- url.url.len -= add;
- } else {
- ngx_str_set(&u->schema, "grpc://");
- }
- url.no_resolve = 1;
- if (ngx_parse_url(r->pool, &url) != NGX_OK) {
- if (url.err) {
- ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
- "%s in upstream \"%V\"", url.err, &url.url);
- }
- return NGX_ERROR;
- }
- u->resolved = ngx_pcalloc(r->pool, sizeof(ngx_http_upstream_resolved_t));
- if (u->resolved == NULL) {
- return NGX_ERROR;
- }
- if (url.addrs) {
- u->resolved->sockaddr = url.addrs[0].sockaddr;
- u->resolved->socklen = url.addrs[0].socklen;
- u->resolved->name = url.addrs[0].name;
- u->resolved->naddrs = 1;
- }
- u->resolved->host = url.host;
- u->resolved->port = url.port;
- u->resolved->no_port = url.no_port;
- if (url.family != AF_UNIX) {
- if (url.no_port) {
- ctx->host = url.host;
- } else {
- ctx->host.len = url.host.len + 1 + url.port_text.len;
- ctx->host.data = url.host.data;
- }
- } else {
- ngx_str_set(&ctx->host, "localhost");
- }
- return NGX_OK;
- }
- static ngx_int_t
- ngx_http_grpc_create_request(ngx_http_request_t *r)
- {
- u_char *p, *tmp, *key_tmp, *val_tmp, *headers_frame;
- size_t len, tmp_len, key_len, val_len, uri_len;
- uintptr_t escape;
- ngx_buf_t *b;
- ngx_uint_t i, next;
- ngx_chain_t *cl, *body;
- ngx_list_part_t *part;
- ngx_table_elt_t *header;
- ngx_http_grpc_ctx_t *ctx;
- ngx_http_upstream_t *u;
- ngx_http_grpc_frame_t *f;
- ngx_http_script_code_pt code;
- ngx_http_grpc_loc_conf_t *glcf;
- ngx_http_script_engine_t e, le;
- ngx_http_script_len_code_pt lcode;
- u = r->upstream;
- glcf = ngx_http_get_module_loc_conf(r, ngx_http_grpc_module);
- ctx = ngx_http_get_module_ctx(r, ngx_http_grpc_module);
- len = sizeof(ngx_http_grpc_connection_start) - 1
- + sizeof(ngx_http_grpc_frame_t);
-
- if (r->method == NGX_HTTP_GET || r->method == NGX_HTTP_POST) {
- len += 1;
- tmp_len = 0;
- } else {
- len += 1 + NGX_HTTP_V2_INT_OCTETS + r->method_name.len;
- tmp_len = r->method_name.len;
- }
-
- len += 1;
-
- if (r->valid_unparsed_uri) {
- escape = 0;
- uri_len = r->unparsed_uri.len;
- } else {
- escape = 2 * ngx_escape_uri(NULL, r->uri.data, r->uri.len,
- NGX_ESCAPE_URI);
- uri_len = r->uri.len + escape + sizeof("?") - 1 + r->args.len;
- }
- len += 1 + NGX_HTTP_V2_INT_OCTETS + uri_len;
- if (tmp_len < uri_len) {
- tmp_len = uri_len;
- }
-
- if (!glcf->host_set) {
- len += 1 + NGX_HTTP_V2_INT_OCTETS + ctx->host.len;
- if (tmp_len < ctx->host.len) {
- tmp_len = ctx->host.len;
- }
- }
-
- ngx_http_script_flush_no_cacheable_variables(r, glcf->headers.flushes);
- ngx_memzero(&le, sizeof(ngx_http_script_engine_t));
- le.ip = glcf->headers.lengths->elts;
- le.request = r;
- le.flushed = 1;
- while (*(uintptr_t *) le.ip) {
- lcode = *(ngx_http_script_len_code_pt *) le.ip;
- key_len = lcode(&le);
- for (val_len = 0; *(uintptr_t *) le.ip; val_len += lcode(&le)) {
- lcode = *(ngx_http_script_len_code_pt *) le.ip;
- }
- le.ip += sizeof(uintptr_t);
- if (val_len == 0) {
- continue;
- }
- len += 1 + NGX_HTTP_V2_INT_OCTETS + key_len
- + NGX_HTTP_V2_INT_OCTETS + val_len;
- if (tmp_len < key_len) {
- tmp_len = key_len;
- }
- if (tmp_len < val_len) {
- tmp_len = val_len;
- }
- }
- if (glcf->upstream.pass_request_headers) {
- part = &r->headers_in.headers.part;
- header = part->elts;
- for (i = 0; ; i++) {
- if (i >= part->nelts) {
- if (part->next == NULL) {
- break;
- }
- part = part->next;
- header = part->elts;
- i = 0;
- }
- if (ngx_hash_find(&glcf->headers.hash, header[i].hash,
- header[i].lowcase_key, header[i].key.len))
- {
- continue;
- }
- len += 1 + NGX_HTTP_V2_INT_OCTETS + header[i].key.len
- + NGX_HTTP_V2_INT_OCTETS + header[i].value.len;
- if (tmp_len < header[i].key.len) {
- tmp_len = header[i].key.len;
- }
- if (tmp_len < header[i].value.len) {
- tmp_len = header[i].value.len;
- }
- }
- }
-
- len += sizeof(ngx_http_grpc_frame_t)
- * (len / NGX_HTTP_V2_DEFAULT_FRAME_SIZE);
- b = ngx_create_temp_buf(r->pool, len);
- if (b == NULL) {
- return NGX_ERROR;
- }
- cl = ngx_alloc_chain_link(r->pool);
- if (cl == NULL) {
- return NGX_ERROR;
- }
- cl->buf = b;
- cl->next = NULL;
- tmp = ngx_palloc(r->pool, tmp_len * 3);
- if (tmp == NULL) {
- return NGX_ERROR;
- }
- key_tmp = tmp + tmp_len;
- val_tmp = tmp + 2 * tmp_len;
-
- b->last = ngx_copy(b->last, ngx_http_grpc_connection_start,
- sizeof(ngx_http_grpc_connection_start) - 1);
-
- headers_frame = b->last;
- f = (ngx_http_grpc_frame_t *) b->last;
- b->last += sizeof(ngx_http_grpc_frame_t);
- f->length_0 = 0;
- f->length_1 = 0;
- f->length_2 = 0;
- f->type = NGX_HTTP_V2_HEADERS_FRAME;
- f->flags = 0;
- f->stream_id_0 = 0;
- f->stream_id_1 = 0;
- f->stream_id_2 = 0;
- f->stream_id_3 = 1;
- if (r->method == NGX_HTTP_GET) {
- *b->last++ = ngx_http_v2_indexed(NGX_HTTP_V2_METHOD_GET_INDEX);
- ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "grpc header: \":method: GET\"");
- } else if (r->method == NGX_HTTP_POST) {
- *b->last++ = ngx_http_v2_indexed(NGX_HTTP_V2_METHOD_POST_INDEX);
- ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "grpc header: \":method: POST\"");
- } else {
- *b->last++ = ngx_http_v2_inc_indexed(NGX_HTTP_V2_METHOD_INDEX);
- b->last = ngx_http_v2_write_value(b->last, r->method_name.data,
- r->method_name.len, tmp);
- ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "grpc header: \":method: %V\"", &r->method_name);
- }
- #if (NGX_HTTP_SSL)
- if (u->ssl) {
- *b->last++ = ngx_http_v2_indexed(NGX_HTTP_V2_SCHEME_HTTPS_INDEX);
- ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "grpc header: \":scheme: https\"");
- } else
- #endif
- {
- *b->last++ = ngx_http_v2_indexed(NGX_HTTP_V2_SCHEME_HTTP_INDEX);
- ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "grpc header: \":scheme: http\"");
- }
- if (r->valid_unparsed_uri) {
- if (r->unparsed_uri.len == 1 && r->unparsed_uri.data[0] == '/') {
- *b->last++ = ngx_http_v2_indexed(NGX_HTTP_V2_PATH_ROOT_INDEX);
- } else {
- *b->last++ = ngx_http_v2_inc_indexed(NGX_HTTP_V2_PATH_INDEX);
- b->last = ngx_http_v2_write_value(b->last, r->unparsed_uri.data,
- r->unparsed_uri.len, tmp);
- }
- ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "grpc header: \":path: %V\"", &r->unparsed_uri);
- } else if (escape || r->args.len > 0) {
- p = val_tmp;
- if (escape) {
- p = (u_char *) ngx_escape_uri(p, r->uri.data, r->uri.len,
- NGX_ESCAPE_URI);
- } else {
- p = ngx_copy(p, r->uri.data, r->uri.len);
- }
- if (r->args.len > 0) {
- *p++ = '?';
- p = ngx_copy(p, r->args.data, r->args.len);
- }
- *b->last++ = ngx_http_v2_inc_indexed(NGX_HTTP_V2_PATH_INDEX);
- b->last = ngx_http_v2_write_value(b->last, val_tmp, p - val_tmp, tmp);
- ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "grpc header: \":path: %*s\"", p - val_tmp, val_tmp);
- } else {
- *b->last++ = ngx_http_v2_inc_indexed(NGX_HTTP_V2_PATH_INDEX);
- b->last = ngx_http_v2_write_value(b->last, r->uri.data,
- r->uri.len, tmp);
- ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "grpc header: \":path: %V\"", &r->uri);
- }
- if (!glcf->host_set) {
- *b->last++ = ngx_http_v2_inc_indexed(NGX_HTTP_V2_AUTHORITY_INDEX);
- b->last = ngx_http_v2_write_value(b->last, ctx->host.data,
- ctx->host.len, tmp);
- ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "grpc header: \":authority: %V\"", &ctx->host);
- }
- ngx_memzero(&e, sizeof(ngx_http_script_engine_t));
- e.ip = glcf->headers.values->elts;
- e.request = r;
- e.flushed = 1;
- le.ip = glcf->headers.lengths->elts;
- while (*(uintptr_t *) le.ip) {
- lcode = *(ngx_http_script_len_code_pt *) le.ip;
- key_len = lcode(&le);
- for (val_len = 0; *(uintptr_t *) le.ip; val_len += lcode(&le)) {
- lcode = *(ngx_http_script_len_code_pt *) le.ip;
- }
- le.ip += sizeof(uintptr_t);
- if (val_len == 0) {
- e.skip = 1;
- while (*(uintptr_t *) e.ip) {
- code = *(ngx_http_script_code_pt *) e.ip;
- code((ngx_http_script_engine_t *) &e);
- }
- e.ip += sizeof(uintptr_t);
- e.skip = 0;
- continue;
- }
- *b->last++ = 0;
- e.pos = key_tmp;
- code = *(ngx_http_script_code_pt *) e.ip;
- code((ngx_http_script_engine_t *) &e);
- b->last = ngx_http_v2_write_name(b->last, key_tmp, key_len, tmp);
- e.pos = val_tmp;
- while (*(uintptr_t *) e.ip) {
- code = *(ngx_http_script_code_pt *) e.ip;
- code((ngx_http_script_engine_t *) &e);
- }
- e.ip += sizeof(uintptr_t);
- b->last = ngx_http_v2_write_value(b->last, val_tmp, val_len, tmp);
- #if (NGX_DEBUG)
- if (r->connection->log->log_level & NGX_LOG_DEBUG_HTTP) {
- ngx_strlow(key_tmp, key_tmp, key_len);
- ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "grpc header: \"%*s: %*s\"",
- key_len, key_tmp, val_len, val_tmp);
- }
- #endif
- }
- if (glcf->upstream.pass_request_headers) {
- part = &r->headers_in.headers.part;
- header = part->elts;
- for (i = 0; ; i++) {
- if (i >= part->nelts) {
- if (part->next == NULL) {
- break;
- }
- part = part->next;
- header = part->elts;
- i = 0;
- }
- if (ngx_hash_find(&glcf->headers.hash, header[i].hash,
- header[i].lowcase_key, header[i].key.len))
- {
- continue;
- }
- *b->last++ = 0;
- b->last = ngx_http_v2_write_name(b->last, header[i].key.data,
- header[i].key.len, tmp);
- b->last = ngx_http_v2_write_value(b->last, header[i].value.data,
- header[i].value.len, tmp);
- #if (NGX_DEBUG)
- if (r->connection->log->log_level & NGX_LOG_DEBUG_HTTP) {
- ngx_strlow(tmp, header[i].key.data, header[i].key.len);
- ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "grpc header: \"%*s: %V\"",
- header[i].key.len, tmp, &header[i].value);
- }
- #endif
- }
- }
-
- len = b->last - headers_frame - sizeof(ngx_http_grpc_frame_t);
- if (len > NGX_HTTP_V2_DEFAULT_FRAME_SIZE) {
- len = NGX_HTTP_V2_DEFAULT_FRAME_SIZE;
- next = 1;
- } else {
- next = 0;
- }
- f = (ngx_http_grpc_frame_t *) headers_frame;
- f->length_0 = (u_char) ((len >> 16) & 0xff);
- f->length_1 = (u_char) ((len >> 8) & 0xff);
- f->length_2 = (u_char) (len & 0xff);
-
- p = headers_frame;
- while (next) {
- p += sizeof(ngx_http_grpc_frame_t) + NGX_HTTP_V2_DEFAULT_FRAME_SIZE;
- len = b->last - p;
- ngx_memmove(p + sizeof(ngx_http_grpc_frame_t), p, len);
- b->last += sizeof(ngx_http_grpc_frame_t);
- if (len > NGX_HTTP_V2_DEFAULT_FRAME_SIZE) {
- len = NGX_HTTP_V2_DEFAULT_FRAME_SIZE;
- next = 1;
- } else {
- next = 0;
- }
- f = (ngx_http_grpc_frame_t *) p;
- f->length_0 = (u_char) ((len >> 16) & 0xff);
- f->length_1 = (u_char) ((len >> 8) & 0xff);
- f->length_2 = (u_char) (len & 0xff);
- f->type = NGX_HTTP_V2_CONTINUATION_FRAME;
- f->flags = 0;
- f->stream_id_0 = 0;
- f->stream_id_1 = 0;
- f->stream_id_2 = 0;
- f->stream_id_3 = 1;
- }
- f->flags |= NGX_HTTP_V2_END_HEADERS_FLAG;
- ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "grpc header: %*xs%s, len: %uz",
- (size_t) ngx_min(b->last - b->pos, 256), b->pos,
- b->last - b->pos > 256 ? "..." : "",
- b->last - b->pos);
- if (r->request_body_no_buffering) {
- u->request_bufs = cl;
- } else {
- body = u->request_bufs;
- u->request_bufs = cl;
- if (body == NULL) {
- f = (ngx_http_grpc_frame_t *) headers_frame;
- f->flags |= NGX_HTTP_V2_END_STREAM_FLAG;
- }
- while (body) {
- b = ngx_alloc_buf(r->pool);
- if (b == NULL) {
- return NGX_ERROR;
- }
- ngx_memcpy(b, body->buf, sizeof(ngx_buf_t));
- cl->next = ngx_alloc_chain_link(r->pool);
- if (cl->next == NULL) {
- return NGX_ERROR;
- }
- cl = cl->next;
- cl->buf = b;
- body = body->next;
- }
- b->last_buf = 1;
- }
- u->output.output_filter = ngx_http_grpc_body_output_filter;
- u->output.filter_ctx = r;
- b->flush = 1;
- cl->next = NULL;
- return NGX_OK;
- }
- static ngx_int_t
- ngx_http_grpc_reinit_request(ngx_http_request_t *r)
- {
- ngx_http_grpc_ctx_t *ctx;
- ctx = ngx_http_get_module_ctx(r, ngx_http_grpc_module);
- if (ctx == NULL) {
- return NGX_OK;
- }
- ctx->state = 0;
- ctx->header_sent = 0;
- ctx->output_closed = 0;
- ctx->output_blocked = 0;
- ctx->parsing_headers = 0;
- ctx->end_stream = 0;
- ctx->done = 0;
- ctx->status = 0;
- ctx->rst = 0;
- ctx->goaway = 0;
- ctx->connection = NULL;
- return NGX_OK;
- }
- static ngx_int_t
- ngx_http_grpc_body_output_filter(void *data, ngx_chain_t *in)
- {
- ngx_http_request_t *r = data;
- off_t file_pos;
- u_char *p, *pos, *start;
- size_t len, limit;
- ngx_buf_t *b;
- ngx_int_t rc;
- ngx_uint_t next, last;
- ngx_chain_t *cl, *out, *ln, **ll;
- ngx_http_upstream_t *u;
- ngx_http_grpc_ctx_t *ctx;
- ngx_http_grpc_frame_t *f;
- ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "grpc output filter");
- ctx = ngx_http_grpc_get_ctx(r);
- if (ctx == NULL) {
- return NGX_ERROR;
- }
- if (in) {
- if (ngx_chain_add_copy(r->pool, &ctx->in, in) != NGX_OK) {
- return NGX_ERROR;
- }
- }
- out = NULL;
- ll = &out;
- if (!ctx->header_sent) {
-
- ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "grpc output header");
- ctx->header_sent = 1;
- if (ctx->id != 1) {
-
- b = ctx->in->buf;
- b->pos += sizeof(ngx_http_grpc_connection_start) - 1;
- p = b->pos;
- while (p < b->last) {
- f = (ngx_http_grpc_frame_t *) p;
- p += sizeof(ngx_http_grpc_frame_t);
- f->stream_id_0 = (u_char) ((ctx->id >> 24) & 0xff);
- f->stream_id_1 = (u_char) ((ctx->id >> 16) & 0xff);
- f->stream_id_2 = (u_char) ((ctx->id >> 8) & 0xff);
- f->stream_id_3 = (u_char) (ctx->id & 0xff);
- p += (f->length_0 << 16) + (f->length_1 << 8) + f->length_2;
- }
- }
- if (ctx->in->buf->last_buf) {
- ctx->output_closed = 1;
- }
- *ll = ctx->in;
- ll = &ctx->in->next;
- ctx->in = ctx->in->next;
- }
- if (ctx->out) {
-
- *ll = ctx->out;
- for (cl = ctx->out, ll = &cl->next; cl; cl = cl->next) {
- ll = &cl->next;
- }
- ctx->out = NULL;
- }
- f = NULL;
- last = 0;
- limit = ngx_max(0, ctx->send_window);
- if (limit > ctx->connection->send_window) {
- limit = ctx->connection->send_window;
- }
- ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "grpc output limit: %uz w:%z:%uz",
- limit, ctx->send_window, ctx->connection->send_window);
- #if (NGX_SUPPRESS_WARN)
- file_pos = 0;
- pos = NULL;
- cl = NULL;
- #endif
- in = ctx->in;
- while (in && limit > 0) {
- ngx_log_debug7(NGX_LOG_DEBUG_EVENT, r->connection->log, 0,
- "grpc output in l:%d f:%d %p, pos %p, size: %z "
- "file: %O, size: %O",
- in->buf->last_buf,
- in->buf->in_file,
- in->buf->start, in->buf->pos,
- in->buf->last - in->buf->pos,
- in->buf->file_pos,
- in->buf->file_last - in->buf->file_pos);
- if (ngx_buf_special(in->buf)) {
- goto next;
- }
- if (in->buf->in_file) {
- file_pos = in->buf->file_pos;
- } else {
- pos = in->buf->pos;
- }
- next = 0;
- do {
- cl = ngx_http_grpc_get_buf(r, ctx);
- if (cl == NULL) {
- return NGX_ERROR;
- }
- b = cl->buf;
- f = (ngx_http_grpc_frame_t *) b->last;
- b->last += sizeof(ngx_http_grpc_frame_t);
- *ll = cl;
- ll = &cl->next;
- cl = ngx_chain_get_free_buf(r->pool, &ctx->free);
- if (cl == NULL) {
- return NGX_ERROR;
- }
- b = cl->buf;
- start = b->start;
- ngx_memcpy(b, in->buf, sizeof(ngx_buf_t));
-
- b->start = start;
- if (in->buf->in_file) {
- b->file_pos = file_pos;
- file_pos += ngx_min(NGX_HTTP_V2_DEFAULT_FRAME_SIZE, limit);
- if (file_pos >= in->buf->file_last) {
- file_pos = in->buf->file_last;
- next = 1;
- }
- b->file_last = file_pos;
- len = (ngx_uint_t) (file_pos - b->file_pos);
- } else {
- b->pos = pos;
- pos += ngx_min(NGX_HTTP_V2_DEFAULT_FRAME_SIZE, limit);
- if (pos >= in->buf->last) {
- pos = in->buf->last;
- next = 1;
- }
- b->last = pos;
- len = (ngx_uint_t) (pos - b->pos);
- }
- b->tag = (ngx_buf_tag_t) &ngx_http_grpc_body_output_filter;
- b->shadow = in->buf;
- b->last_shadow = next;
- b->last_buf = 0;
- b->last_in_chain = 0;
- *ll = cl;
- ll = &cl->next;
- f->length_0 = (u_char) ((len >> 16) & 0xff);
- f->length_1 = (u_char) ((len >> 8) & 0xff);
- f->length_2 = (u_char) (len & 0xff);
- f->type = NGX_HTTP_V2_DATA_FRAME;
- f->flags = 0;
- f->stream_id_0 = (u_char) ((ctx->id >> 24) & 0xff);
- f->stream_id_1 = (u_char) ((ctx->id >> 16) & 0xff);
- f->stream_id_2 = (u_char) ((ctx->id >> 8) & 0xff);
- f->stream_id_3 = (u_char) (ctx->id & 0xff);
- limit -= len;
- ctx->send_window -= len;
- ctx->connection->send_window -= len;
- } while (!next && limit > 0);
- if (!next) {
-
- if (in->buf->in_file) {
- in->buf->file_pos = file_pos;
- } else {
- in->buf->pos = pos;
- }
- break;
- }
- next:
- if (in->buf->last_buf) {
- last = 1;
- }
- ln = in;
- in = in->next;
- ngx_free_chain(r->pool, ln);
- }
- ctx->in = in;
- if (last) {
- ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "grpc output last");
- ctx->output_closed = 1;
- if (f) {
- f->flags |= NGX_HTTP_V2_END_STREAM_FLAG;
- } else {
- cl = ngx_http_grpc_get_buf(r, ctx);
- if (cl == NULL) {
- return NGX_ERROR;
- }
- b = cl->buf;
- f = (ngx_http_grpc_frame_t *) b->last;
- b->last += sizeof(ngx_http_grpc_frame_t);
- f->length_0 = 0;
- f->length_1 = 0;
- f->length_2 = 0;
- f->type = NGX_HTTP_V2_DATA_FRAME;
- f->flags = NGX_HTTP_V2_END_STREAM_FLAG;
- f->stream_id_0 = (u_char) ((ctx->id >> 24) & 0xff);
- f->stream_id_1 = (u_char) ((ctx->id >> 16) & 0xff);
- f->stream_id_2 = (u_char) ((ctx->id >> 8) & 0xff);
- f->stream_id_3 = (u_char) (ctx->id & 0xff);
- *ll = cl;
- ll = &cl->next;
- }
- cl->buf->last_buf = 1;
- }
- *ll = NULL;
- #if (NGX_DEBUG)
- for (cl = out; cl; cl = cl->next) {
- ngx_log_debug7(NGX_LOG_DEBUG_EVENT, r->connection->log, 0,
- "grpc output out l:%d f:%d %p, pos %p, size: %z "
- "file: %O, size: %O",
- cl->buf->last_buf,
- cl->buf->in_file,
- cl->buf->start, cl->buf->pos,
- cl->buf->last - cl->buf->pos,
- cl->buf->file_pos,
- cl->buf->file_last - cl->buf->file_pos);
- }
- ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "grpc output limit: %uz w:%z:%uz",
- limit, ctx->send_window, ctx->connection->send_window);
- #endif
- rc = ngx_chain_writer(&r->upstream->writer, out);
- ngx_chain_update_chains(r->pool, &ctx->free, &ctx->busy, &out,
- (ngx_buf_tag_t) &ngx_http_grpc_body_output_filter);
- for (cl = ctx->free; cl; cl = cl->next) {
-
- if (cl->buf->shadow) {
- if (cl->buf->last_shadow) {
- b = cl->buf->shadow;
- b->pos = b->last;
- }
- cl->buf->shadow = NULL;
- }
- }
- if (rc == NGX_OK && ctx->in) {
- rc = NGX_AGAIN;
- }
- if (rc == NGX_AGAIN) {
- ctx->output_blocked = 1;
- } else {
- ctx->output_blocked = 0;
- }
- if (ctx->done) {
-
- u = r->upstream;
- u->length = 0;
- if (ctx->in == NULL
- && ctx->out == NULL
- && ctx->output_closed
- && !ctx->output_blocked
- && !ctx->goaway
- && ctx->state == ngx_http_grpc_st_start)
- {
- u->keepalive = 1;
- }
- ngx_post_event(u->peer.connection->read, &ngx_posted_events);
- }
- return rc;
- }
- static ngx_int_t
- ngx_http_grpc_process_header(ngx_http_request_t *r)
- {
- ngx_str_t *status_line;
- ngx_int_t rc, status;
- ngx_buf_t *b;
- ngx_table_elt_t *h;
- ngx_http_upstream_t *u;
- ngx_http_grpc_ctx_t *ctx;
- ngx_http_upstream_header_t *hh;
- ngx_http_upstream_main_conf_t *umcf;
- u = r->upstream;
- b = &u->buffer;
- ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "grpc response: %*xs%s, len: %uz",
- (size_t) ngx_min(b->last - b->pos, 256),
- b->pos, b->last - b->pos > 256 ? "..." : "",
- b->last - b->pos);
- ctx = ngx_http_grpc_get_ctx(r);
- if (ctx == NULL) {
- return NGX_ERROR;
- }
- umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);
- for ( ;; ) {
- if (ctx->state < ngx_http_grpc_st_payload) {
- rc = ngx_http_grpc_parse_frame(r, ctx, b);
- if (rc == NGX_AGAIN) {
-
- if (!ctx->parsing_headers) {
- b->pos = b->start;
- b->last = b->pos;
- }
- return NGX_AGAIN;
- }
- if (rc == NGX_ERROR) {
- return NGX_HTTP_UPSTREAM_INVALID_HEADER;
- }
-
- if (ctx->type == NGX_HTTP_V2_DATA_FRAME
- || (ctx->type == NGX_HTTP_V2_CONTINUATION_FRAME
- && !ctx->parsing_headers)
- || (ctx->type != NGX_HTTP_V2_CONTINUATION_FRAME
- && ctx->parsing_headers))
- {
- ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
- "upstream sent unexpected http2 frame: %d",
- ctx->type);
- return NGX_HTTP_UPSTREAM_INVALID_HEADER;
- }
- if (ctx->stream_id && ctx->stream_id != ctx->id) {
- ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
- "upstream sent frame for unknown stream %ui",
- ctx->stream_id);
- return NGX_HTTP_UPSTREAM_INVALID_HEADER;
- }
- }
-
- if (ctx->type == NGX_HTTP_V2_RST_STREAM_FRAME) {
- rc = ngx_http_grpc_parse_rst_stream(r, ctx, b);
- if (rc == NGX_AGAIN) {
- return NGX_AGAIN;
- }
- if (rc == NGX_ERROR) {
- return NGX_HTTP_UPSTREAM_INVALID_HEADER;
- }
- ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
- "upstream rejected request with error %ui",
- ctx->error);
- return NGX_HTTP_UPSTREAM_INVALID_HEADER;
- }
- if (ctx->type == NGX_HTTP_V2_GOAWAY_FRAME) {
- rc = ngx_http_grpc_parse_goaway(r, ctx, b);
- if (rc == NGX_AGAIN) {
- return NGX_AGAIN;
- }
- if (rc == NGX_ERROR) {
- return NGX_HTTP_UPSTREAM_INVALID_HEADER;
- }
-
- if (ctx->stream_id < ctx->id) {
- TODO
- ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
- "upstream sent goaway with error %ui",
- ctx->error);
- return NGX_HTTP_UPSTREAM_INVALID_HEADER;
- }
- ctx->goaway = 1;
- continue;
- }
- if (ctx->type == NGX_HTTP_V2_WINDOW_UPDATE_FRAME) {
- rc = ngx_http_grpc_parse_window_update(r, ctx, b);
- if (rc == NGX_AGAIN) {
- return NGX_AGAIN;
- }
- if (rc == NGX_ERROR) {
- return NGX_HTTP_UPSTREAM_INVALID_HEADER;
- }
- if (ctx->in) {
- ngx_post_event(u->peer.connection->write, &ngx_posted_events);
- }
- continue;
- }
- if (ctx->type == NGX_HTTP_V2_SETTINGS_FRAME) {
- rc = ngx_http_grpc_parse_settings(r, ctx, b);
- if (rc == NGX_AGAIN) {
- return NGX_AGAIN;
- }
- if (rc == NGX_ERROR) {
- return NGX_HTTP_UPSTREAM_INVALID_HEADER;
- }
- if (ctx->in) {
- ngx_post_event(u->peer.connection->write, &ngx_posted_events);
- }
- continue;
- }
- if (ctx->type == NGX_HTTP_V2_PING_FRAME) {
- rc = ngx_http_grpc_parse_ping(r, ctx, b);
- if (rc == NGX_AGAIN) {
- return NGX_AGAIN;
- }
- if (rc == NGX_ERROR) {
- return NGX_HTTP_UPSTREAM_INVALID_HEADER;
- }
- ngx_post_event(u->peer.connection->write, &ngx_posted_events);
- continue;
- }
- if (ctx->type == NGX_HTTP_V2_PUSH_PROMISE_FRAME) {
- ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
- "upstream sent unexpected push promise frame");
- return NGX_HTTP_UPSTREAM_INVALID_HEADER;
- }
- if (ctx->type != NGX_HTTP_V2_HEADERS_FRAME
- && ctx->type != NGX_HTTP_V2_CONTINUATION_FRAME)
- {
-
- if (b->last - b->pos < (ssize_t) ctx->rest) {
- ctx->rest -= b->last - b->pos;
- b->pos = b->last;
- return NGX_AGAIN;
- }
- b->pos += ctx->rest;
- ctx->rest = 0;
- ctx->state = ngx_http_grpc_st_start;
- continue;
- }
-
- for ( ;; ) {
- rc = ngx_http_grpc_parse_header(r, ctx, b);
- if (rc == NGX_AGAIN) {
- break;
- }
- if (rc == NGX_OK) {
-
- ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "grpc header: \"%V: %V\"",
- &ctx->name, &ctx->value);
- if (ctx->name.len && ctx->name.data[0] == ':') {
- if (ctx->name.len != sizeof(":status") - 1
- || ngx_strncmp(ctx->name.data, ":status",
- sizeof(":status") - 1)
- != 0)
- {
- ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
- "upstream sent invalid header \"%V: %V\"",
- &ctx->name, &ctx->value);
- return NGX_HTTP_UPSTREAM_INVALID_HEADER;
- }
- if (ctx->status) {
- ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
- "upstream sent duplicate :status header");
- return NGX_HTTP_UPSTREAM_INVALID_HEADER;
- }
- status_line = &ctx->value;
- if (status_line->len != 3) {
- ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
- "upstream sent invalid :status \"%V\"",
- status_line);
- return NGX_HTTP_UPSTREAM_INVALID_HEADER;
- }
- status = ngx_atoi(status_line->data, 3);
- if (status == NGX_ERROR) {
- ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
- "upstream sent invalid :status \"%V\"",
- status_line);
- return NGX_HTTP_UPSTREAM_INVALID_HEADER;
- }
- if (status < NGX_HTTP_OK) {
- ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
- "upstream sent unexpected :status \"%V\"",
- status_line);
- return NGX_HTTP_UPSTREAM_INVALID_HEADER;
- }
- u->headers_in.status_n = status;
- if (u->state && u->state->status == 0) {
- u->state->status = status;
- }
- ctx->status = 1;
- continue;
- } else if (!ctx->status) {
- ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
- "upstream sent no :status header");
- return NGX_HTTP_UPSTREAM_INVALID_HEADER;
- }
- h = ngx_list_push(&u->headers_in.headers);
- if (h == NULL) {
- return NGX_ERROR;
- }
- h->key = ctx->name;
- h->value = ctx->value;
- h->lowcase_key = h->key.data;
- h->hash = ngx_hash_key(h->key.data, h->key.len);
- hh = ngx_hash_find(&umcf->headers_in_hash, h->hash,
- h->lowcase_key, h->key.len);
- if (hh) {
- rc = hh->handler(r, h, hh->offset);
- if (rc != NGX_OK) {
- return rc;
- }
- }
- continue;
- }
- if (rc == NGX_HTTP_PARSE_HEADER_DONE) {
-
- ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "grpc header done");
- if (ctx->end_stream) {
- u->headers_in.content_length_n = 0;
- if (ctx->in == NULL
- && ctx->out == NULL
- && ctx->output_closed
- && !ctx->output_blocked
- && !ctx->goaway
- && b->last == b->pos)
- {
- u->keepalive = 1;
- }
- }
- return NGX_OK;
- }
-
- ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
- "upstream sent invalid header");
- return NGX_HTTP_UPSTREAM_INVALID_HEADER;
- }
-
- if (ctx->rest == 0) {
- ctx->state = ngx_http_grpc_st_start;
- continue;
- }
- return NGX_AGAIN;
- }
- }
- static ngx_int_t
- ngx_http_grpc_filter_init(void *data)
- {
- ngx_http_grpc_ctx_t *ctx = data;
- ngx_http_request_t *r;
- ngx_http_upstream_t *u;
- r = ctx->request;
- u = r->upstream;
- if (u->headers_in.status_n == NGX_HTTP_NO_CONTENT
- || u->headers_in.status_n == NGX_HTTP_NOT_MODIFIED
- || r->method == NGX_HTTP_HEAD)
- {
- ctx->length = 0;
- } else {
- ctx->length = u->headers_in.content_length_n;
- }
- if (ctx->end_stream) {
- if (ctx->length > 0) {
- ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
- "upstream prematurely closed stream");
- return NGX_ERROR;
- }
- u->length = 0;
- ctx->done = 1;
- } else {
- u->length = 1;
- }
- return NGX_OK;
- }
- static ngx_int_t
- ngx_http_grpc_filter(void *data, ssize_t bytes)
- {
- ngx_http_grpc_ctx_t *ctx = data;
- ngx_int_t rc;
- ngx_buf_t *b, *buf;
- ngx_chain_t *cl, **ll;
- ngx_table_elt_t *h;
- ngx_http_request_t *r;
- ngx_http_upstream_t *u;
- r = ctx->request;
- u = r->upstream;
- b = &u->buffer;
- ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "grpc filter bytes:%z", bytes);
- b->pos = b->last;
- b->last += bytes;
- for (cl = u->out_bufs, ll = &u->out_bufs; cl; cl = cl->next) {
- ll = &cl->next;
- }
- for ( ;; ) {
- if (ctx->state < ngx_http_grpc_st_payload) {
- rc = ngx_http_grpc_parse_frame(r, ctx, b);
- if (rc == NGX_AGAIN) {
- if (ctx->done) {
- if (ctx->length > 0) {
- ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
- "upstream prematurely closed stream");
- return NGX_ERROR;
- }
-
- if (ctx->out) {
- ngx_post_event(u->peer.connection->write,
- &ngx_posted_events);
- return NGX_AGAIN;
- }
- u->length = 0;
- if (ctx->in == NULL
- && ctx->output_closed
- && !ctx->output_blocked
- && !ctx->goaway
- && ctx->state == ngx_http_grpc_st_start)
- {
- u->keepalive = 1;
- }
- break;
- }
- return NGX_AGAIN;
- }
- if (rc == NGX_ERROR) {
- return NGX_ERROR;
- }
- if ((ctx->type == NGX_HTTP_V2_CONTINUATION_FRAME
- && !ctx->parsing_headers)
- || (ctx->type != NGX_HTTP_V2_CONTINUATION_FRAME
- && ctx->parsing_headers))
- {
- ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
- "upstream sent unexpected http2 frame: %d",
- ctx->type);
- return NGX_ERROR;
- }
- if (ctx->type == NGX_HTTP_V2_DATA_FRAME) {
- if (ctx->stream_id != ctx->id) {
- ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
- "upstream sent data frame "
- "for unknown stream %ui",
- ctx->stream_id);
- return NGX_ERROR;
- }
- if (ctx->rest > ctx->recv_window) {
- ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
- "upstream violated stream flow control, "
- "received %uz data frame with window %uz",
- ctx->rest, ctx->recv_window);
- return NGX_ERROR;
- }
- if (ctx->rest > ctx->connection->recv_window) {
- ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
- "upstream violated connection flow control, "
- "received %uz data frame with window %uz",
- ctx->rest, ctx->connection->recv_window);
- return NGX_ERROR;
- }
- ctx->recv_window -= ctx->rest;
- ctx->connection->recv_window -= ctx->rest;
- if (ctx->connection->recv_window < NGX_HTTP_V2_MAX_WINDOW / 4
- || ctx->recv_window < NGX_HTTP_V2_MAX_WINDOW / 4)
- {
- if (ngx_http_grpc_send_window_update(r, ctx) != NGX_OK) {
- return NGX_ERROR;
- }
- ngx_post_event(u->peer.connection->write,
- &ngx_posted_events);
- }
- }
- if (ctx->stream_id && ctx->stream_id != ctx->id) {
- ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
- "upstream sent frame for unknown stream %ui",
- ctx->stream_id);
- return NGX_ERROR;
- }
- if (ctx->stream_id && ctx->done
- && ctx->type != NGX_HTTP_V2_RST_STREAM_FRAME
- && ctx->type != NGX_HTTP_V2_WINDOW_UPDATE_FRAME)
- {
- ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
- "upstream sent frame for closed stream %ui",
- ctx->stream_id);
- return NGX_ERROR;
- }
- ctx->padding = 0;
- }
- if (ctx->state == ngx_http_grpc_st_padding) {
- if (b->last - b->pos < (ssize_t) ctx->rest) {
- ctx->rest -= b->last - b->pos;
- b->pos = b->last;
- return NGX_AGAIN;
- }
- b->pos += ctx->rest;
- ctx->rest = 0;
- ctx->state = ngx_http_grpc_st_start;
- if (ctx->flags & NGX_HTTP_V2_END_STREAM_FLAG) {
- ctx->done = 1;
- }
- continue;
- }
-
- if (ctx->type == NGX_HTTP_V2_RST_STREAM_FRAME) {
- rc = ngx_http_grpc_parse_rst_stream(r, ctx, b);
- if (rc == NGX_AGAIN) {
- return NGX_AGAIN;
- }
- if (rc == NGX_ERROR) {
- return NGX_ERROR;
- }
- if (ctx->error || !ctx->done) {
- ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
- "upstream rejected request with error %ui",
- ctx->error);
- return NGX_ERROR;
- }
- if (ctx->rst) {
- ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
- "upstream sent frame for closed stream %ui",
- ctx->stream_id);
- return NGX_ERROR;
- }
- ctx->rst = 1;
- continue;
- }
- if (ctx->type == NGX_HTTP_V2_GOAWAY_FRAME) {
- rc = ngx_http_grpc_parse_goaway(r, ctx, b);
- if (rc == NGX_AGAIN) {
- return NGX_AGAIN;
- }
- if (rc == NGX_ERROR) {
- return NGX_ERROR;
- }
-
- if (ctx->stream_id < ctx->id) {
- TODO
- ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
- "upstream sent goaway with error %ui",
- ctx->error);
- return NGX_ERROR;
- }
- ctx->goaway = 1;
- continue;
- }
- if (ctx->type == NGX_HTTP_V2_WINDOW_UPDATE_FRAME) {
- rc = ngx_http_grpc_parse_window_update(r, ctx, b);
- if (rc == NGX_AGAIN) {
- return NGX_AGAIN;
- }
- if (rc == NGX_ERROR) {
- return NGX_ERROR;
- }
- if (ctx->in) {
- ngx_post_event(u->peer.connection->write, &ngx_posted_events);
- }
- continue;
- }
- if (ctx->type == NGX_HTTP_V2_SETTINGS_FRAME) {
- rc = ngx_http_grpc_parse_settings(r, ctx, b);
- if (rc == NGX_AGAIN) {
- return NGX_AGAIN;
- }
- if (rc == NGX_ERROR) {
- return NGX_ERROR;
- }
- if (ctx->in) {
- ngx_post_event(u->peer.connection->write, &ngx_posted_events);
- }
- continue;
- }
- if (ctx->type == NGX_HTTP_V2_PING_FRAME) {
- rc = ngx_http_grpc_parse_ping(r, ctx, b);
- if (rc == NGX_AGAIN) {
- return NGX_AGAIN;
- }
- if (rc == NGX_ERROR) {
- return NGX_ERROR;
- }
- ngx_post_event(u->peer.connection->write, &ngx_posted_events);
- continue;
- }
- if (ctx->type == NGX_HTTP_V2_PUSH_PROMISE_FRAME) {
- ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
- "upstream sent unexpected push promise frame");
- return NGX_ERROR;
- }
- if (ctx->type == NGX_HTTP_V2_HEADERS_FRAME
- || ctx->type == NGX_HTTP_V2_CONTINUATION_FRAME)
- {
- for ( ;; ) {
- rc = ngx_http_grpc_parse_header(r, ctx, b);
- if (rc == NGX_AGAIN) {
- break;
- }
- if (rc == NGX_OK) {
-
- ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "grpc trailer: \"%V: %V\"",
- &ctx->name, &ctx->value);
- if (ctx->name.len && ctx->name.data[0] == ':') {
- ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
- "upstream sent invalid "
- "trailer \"%V: %V\"",
- &ctx->name, &ctx->value);
- return NGX_ERROR;
- }
- h = ngx_list_push(&u->headers_in.trailers);
- if (h == NULL) {
- return NGX_ERROR;
- }
- h->key = ctx->name;
- h->value = ctx->value;
- h->lowcase_key = h->key.data;
- h->hash = ngx_hash_key(h->key.data, h->key.len);
- continue;
- }
- if (rc == NGX_HTTP_PARSE_HEADER_DONE) {
-
- ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "grpc trailer done");
- if (ctx->end_stream) {
- ctx->done = 1;
- break;
- }
- ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
- "upstream sent trailer without "
- "end stream flag");
- return NGX_ERROR;
- }
-
- ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
- "upstream sent invalid trailer");
- return NGX_ERROR;
- }
- if (rc == NGX_HTTP_PARSE_HEADER_DONE) {
- continue;
- }
-
- if (ctx->rest == 0) {
- ctx->state = ngx_http_grpc_st_start;
- continue;
- }
- return NGX_AGAIN;
- }
- if (ctx->type != NGX_HTTP_V2_DATA_FRAME) {
-
- if (b->last - b->pos < (ssize_t) ctx->rest) {
- ctx->rest -= b->last - b->pos;
- b->pos = b->last;
- return NGX_AGAIN;
- }
- b->pos += ctx->rest;
- ctx->rest = 0;
- ctx->state = ngx_http_grpc_st_start;
- continue;
- }
-
- if (ctx->flags & NGX_HTTP_V2_PADDED_FLAG) {
- if (ctx->rest == 0) {
- ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
- "upstream sent too short http2 frame");
- return NGX_ERROR;
- }
- if (b->pos == b->last) {
- return NGX_AGAIN;
- }
- ctx->flags &= ~NGX_HTTP_V2_PADDED_FLAG;
- ctx->padding = *b->pos++;
- ctx->rest -= 1;
- if (ctx->padding > ctx->rest) {
- ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
- "upstream sent http2 frame with too long "
- "padding: %d in frame %uz",
- ctx->padding, ctx->rest);
- return NGX_ERROR;
- }
- continue;
- }
- if (ctx->rest == ctx->padding) {
- goto done;
- }
- if (b->pos == b->last) {
- return NGX_AGAIN;
- }
- cl = ngx_chain_get_free_buf(r->pool, &u->free_bufs);
- if (cl == NULL) {
- return NGX_ERROR;
- }
- *ll = cl;
- ll = &cl->next;
- buf = cl->buf;
- buf->flush = 1;
- buf->memory = 1;
- buf->pos = b->pos;
- buf->tag = u->output.tag;
- ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "grpc output buf %p", buf->pos);
- if (b->last - b->pos < (ssize_t) ctx->rest - ctx->padding) {
- ctx->rest -= b->last - b->pos;
- b->pos = b->last;
- buf->last = b->pos;
- if (ctx->length != -1) {
- if (buf->last - buf->pos > ctx->length) {
- ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
- "upstream sent response body larger "
- "than indicated content length");
- return NGX_ERROR;
- }
- ctx->length -= buf->last - buf->pos;
- }
- return NGX_AGAIN;
- }
- b->pos += ctx->rest - ctx->padding;
- buf->last = b->pos;
- ctx->rest = ctx->padding;
- if (ctx->length != -1) {
- if (buf->last - buf->pos > ctx->length) {
- ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
- "upstream sent response body larger "
- "than indicated content length");
- return NGX_ERROR;
- }
- ctx->length -= buf->last - buf->pos;
- }
- done:
- if (ctx->padding) {
- ctx->state = ngx_http_grpc_st_padding;
- continue;
- }
- ctx->state = ngx_http_grpc_st_start;
- if (ctx->flags & NGX_HTTP_V2_END_STREAM_FLAG) {
- ctx->done = 1;
- }
- }
- return NGX_OK;
- }
- static ngx_int_t
- ngx_http_grpc_parse_frame(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx,
- ngx_buf_t *b)
- {
- u_char ch, *p;
- ngx_http_grpc_state_e state;
- state = ctx->state;
- for (p = b->pos; p < b->last; p++) {
- ch = *p;
- #if 0
- #endif
- switch (state) {
- case ngx_http_grpc_st_start:
- ctx->rest = ch << 16;
- state = ngx_http_grpc_st_length_2;
- break;
- case ngx_http_grpc_st_length_2:
- ctx->rest |= ch << 8;
- state = ngx_http_grpc_st_length_3;
- break;
- case ngx_http_grpc_st_length_3:
- ctx->rest |= ch;
- if (ctx->rest > NGX_HTTP_V2_DEFAULT_FRAME_SIZE) {
- ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
- "upstream sent too large http2 frame: %uz",
- ctx->rest);
- return NGX_ERROR;
- }
- state = ngx_http_grpc_st_type;
- break;
- case ngx_http_grpc_st_type:
- ctx->type = ch;
- state = ngx_http_grpc_st_flags;
- break;
- case ngx_http_grpc_st_flags:
- ctx->flags = ch;
- state = ngx_http_grpc_st_stream_id;
- break;
- case ngx_http_grpc_st_stream_id:
- ctx->stream_id = (ch & 0x7f) << 24;
- state = ngx_http_grpc_st_stream_id_2;
- break;
- case ngx_http_grpc_st_stream_id_2:
- ctx->stream_id |= ch << 16;
- state = ngx_http_grpc_st_stream_id_3;
- break;
- case ngx_http_grpc_st_stream_id_3:
- ctx->stream_id |= ch << 8;
- state = ngx_http_grpc_st_stream_id_4;
- break;
- case ngx_http_grpc_st_stream_id_4:
- ctx->stream_id |= ch;
- ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "grpc frame: %d, len: %uz, f:%d, i:%ui",
- ctx->type, ctx->rest, ctx->flags, ctx->stream_id);
- b->pos = p + 1;
- ctx->state = ngx_http_grpc_st_payload;
- ctx->frame_state = 0;
- return NGX_OK;
-
- case ngx_http_grpc_st_payload:
- case ngx_http_grpc_st_padding:
- break;
- }
- }
- b->pos = p;
- ctx->state = state;
- return NGX_AGAIN;
- }
- static ngx_int_t
- ngx_http_grpc_parse_header(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx,
- ngx_buf_t *b)
- {
- u_char ch, *p, *last;
- size_t min;
- ngx_int_t rc;
- enum {
- sw_start = 0,
- sw_padding_length,
- sw_dependency,
- sw_dependency_2,
- sw_dependency_3,
- sw_dependency_4,
- sw_weight,
- sw_fragment,
- sw_padding
- } state;
- state = ctx->frame_state;
- if (state == sw_start) {
- ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "grpc parse header: start");
- if (ctx->type == NGX_HTTP_V2_HEADERS_FRAME) {
- ctx->parsing_headers = 1;
- ctx->fragment_state = 0;
- min = (ctx->flags & NGX_HTTP_V2_PADDED_FLAG ? 1 : 0)
- + (ctx->flags & NGX_HTTP_V2_PRIORITY_FLAG ? 5 : 0);
- if (ctx->rest < min) {
- ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
- "upstream sent headers frame "
- "with invalid length: %uz",
- ctx->rest);
- return NGX_ERROR;
- }
- if (ctx->flags & NGX_HTTP_V2_END_STREAM_FLAG) {
- ctx->end_stream = 1;
- }
- if (ctx->flags & NGX_HTTP_V2_PADDED_FLAG) {
- state = sw_padding_length;
- } else if (ctx->flags & NGX_HTTP_V2_PRIORITY_FLAG) {
- state = sw_dependency;
- } else {
- state = sw_fragment;
- }
- } else if (ctx->type == NGX_HTTP_V2_CONTINUATION_FRAME) {
- state = sw_fragment;
- }
- ctx->padding = 0;
- ctx->frame_state = state;
- }
- if (state < sw_fragment) {
- if (b->last - b->pos < (ssize_t) ctx->rest) {
- last = b->last;
- } else {
- last = b->pos + ctx->rest;
- }
- for (p = b->pos; p < last; p++) {
- ch = *p;
- #if 0
- #endif
-
- switch (state) {
- case sw_padding_length:
- ctx->padding = ch;
- if (ctx->flags & NGX_HTTP_V2_PRIORITY_FLAG) {
- state = sw_dependency;
- break;
- }
- goto fragment;
- case sw_dependency:
- state = sw_dependency_2;
- break;
- case sw_dependency_2:
- state = sw_dependency_3;
- break;
- case sw_dependency_3:
- state = sw_dependency_4;
- break;
- case sw_dependency_4:
- state = sw_weight;
- break;
- case sw_weight:
- goto fragment;
-
- case sw_start:
- case sw_fragment:
- case sw_padding:
- break;
- }
- }
- ctx->rest -= p - b->pos;
- b->pos = p;
- ctx->frame_state = state;
- return NGX_AGAIN;
- fragment:
- p++;
- ctx->rest -= p - b->pos;
- b->pos = p;
- if (ctx->padding > ctx->rest) {
- ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
- "upstream sent http2 frame with too long "
- "padding: %d in frame %uz",
- ctx->padding, ctx->rest);
- return NGX_ERROR;
- }
- state = sw_fragment;
- ctx->frame_state = state;
- }
- if (state == sw_fragment) {
- rc = ngx_http_grpc_parse_fragment(r, ctx, b);
- if (rc == NGX_AGAIN) {
- return NGX_AGAIN;
- }
- if (rc == NGX_ERROR) {
- return NGX_ERROR;
- }
- if (rc == NGX_OK) {
- return NGX_OK;
- }
-
- state = sw_padding;
- ctx->frame_state = state;
- }
- if (state == sw_padding) {
- if (b->last - b->pos < (ssize_t) ctx->rest) {
- ctx->rest -= b->last - b->pos;
- b->pos = b->last;
- return NGX_AGAIN;
- }
- b->pos += ctx->rest;
- ctx->rest = 0;
- ctx->state = ngx_http_grpc_st_start;
- if (ctx->flags & NGX_HTTP_V2_END_HEADERS_FLAG) {
- if (ctx->fragment_state) {
- ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
- "upstream sent truncated http2 header");
- return NGX_ERROR;
- }
- ctx->parsing_headers = 0;
- return NGX_HTTP_PARSE_HEADER_DONE;
- }
- return NGX_AGAIN;
- }
-
- return NGX_ERROR;
- }
- static ngx_int_t
- ngx_http_grpc_parse_fragment(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx,
- ngx_buf_t *b)
- {
- u_char ch, *p, *last;
- size_t size;
- ngx_uint_t index, size_update;
- enum {
- sw_start = 0,
- sw_index,
- sw_name_length,
- sw_name_length_2,
- sw_name_length_3,
- sw_name_length_4,
- sw_name,
- sw_name_bytes,
- sw_value_length,
- sw_value_length_2,
- sw_value_length_3,
- sw_value_length_4,
- sw_value,
- sw_value_bytes
- } state;
-
- #if 0
- #endif
- if (b->last - b->pos < (ssize_t) ctx->rest - ctx->padding) {
- last = b->last;
- } else {
- last = b->pos + ctx->rest - ctx->padding;
- }
- state = ctx->fragment_state;
- for (p = b->pos; p < last; p++) {
- ch = *p;
- #if 0
- #endif
- switch (state) {
- case sw_start:
- ctx->index = 0;
- if ((ch & 0x80) == 0x80) {
-
- index = ch & ~0x80;
- if (index == 0 || index > 61) {
- ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
- "upstream sent invalid http2 "
- "table index: %ui", index);
- return NGX_ERROR;
- }
- ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "grpc indexed header: %ui", index);
- ctx->index = index;
- ctx->literal = 0;
- goto done;
- } else if ((ch & 0xc0) == 0x40) {
-
- index = ch & ~0xc0;
- if (index > 61) {
- ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
- "upstream sent invalid http2 "
- "table index: %ui", index);
- return NGX_ERROR;
- }
- ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "grpc literal header: %ui", index);
- if (index == 0) {
- state = sw_name_length;
- break;
- }
- ctx->index = index;
- ctx->literal = 1;
- state = sw_value_length;
- break;
- } else if ((ch & 0xe0) == 0x20) {
-
- size_update = ch & ~0xe0;
- if (size_update > 0) {
- ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
- "upstream sent invalid http2 "
- "dynamic table size update: %ui",
- size_update);
- return NGX_ERROR;
- }
- ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "grpc table size update: %ui", size_update);
- break;
- } else if ((ch & 0xf0) == 0x10) {
-
- index = ch & ~0xf0;
- if (index == 0x0f) {
- ctx->index = index;
- ctx->literal = 1;
- state = sw_index;
- break;
- }
- if (index == 0) {
- state = sw_name_length;
- break;
- }
- ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "grpc literal header never indexed: %ui",
- index);
- ctx->index = index;
- ctx->literal = 1;
- state = sw_value_length;
- break;
- } else if ((ch & 0xf0) == 0x00) {
-
- index = ch & ~0xf0;
- if (index == 0x0f) {
- ctx->index = index;
- ctx->literal = 1;
- state = sw_index;
- break;
- }
- if (index == 0) {
- state = sw_name_length;
- break;
- }
- ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "grpc literal header without indexing: %ui",
- index);
- ctx->index = index;
- ctx->literal = 1;
- state = sw_value_length;
- break;
- }
-
- return NGX_ERROR;
- case sw_index:
- ctx->index = ctx->index + (ch & ~0x80);
- if (ch & 0x80) {
- ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
- "upstream sent http2 table index "
- "with continuation flag");
- return NGX_ERROR;
- }
- if (ctx->index > 61) {
- ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
- "upstream sent invalid http2 "
- "table index: %ui", ctx->index);
- return NGX_ERROR;
- }
- ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "grpc header index: %ui", ctx->index);
- state = sw_value_length;
- break;
- case sw_name_length:
- ctx->field_huffman = ch & 0x80 ? 1 : 0;
- ctx->field_length = ch & ~0x80;
- if (ctx->field_length == 0x7f) {
- state = sw_name_length_2;
- break;
- }
- if (ctx->field_length == 0) {
- ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
- "upstream sent zero http2 "
- "header name length");
- return NGX_ERROR;
- }
- state = sw_name;
- break;
- case sw_name_length_2:
- ctx->field_length += ch & ~0x80;
- if (ch & 0x80) {
- state = sw_name_length_3;
- break;
- }
- state = sw_name;
- break;
- case sw_name_length_3:
- ctx->field_length += (ch & ~0x80) << 7;
- if (ch & 0x80) {
- state = sw_name_length_4;
- break;
- }
- state = sw_name;
- break;
- case sw_name_length_4:
- ctx->field_length += (ch & ~0x80) << 14;
- if (ch & 0x80) {
- ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
- "upstream sent too large http2 "
- "header name length");
- return NGX_ERROR;
- }
- state = sw_name;
- break;
- case sw_name:
- ctx->name.len = ctx->field_huffman ?
- ctx->field_length * 8 / 5 : ctx->field_length;
- ctx->name.data = ngx_pnalloc(r->pool, ctx->name.len + 1);
- if (ctx->name.data == NULL) {
- return NGX_ERROR;
- }
- ctx->field_end = ctx->name.data;
- ctx->field_rest = ctx->field_length;
- ctx->field_state = 0;
- state = sw_name_bytes;
-
- case sw_name_bytes:
- ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "grpc name: len:%uz h:%d last:%uz, rest:%uz",
- ctx->field_length,
- ctx->field_huffman,
- last - p,
- ctx->rest - (p - b->pos));
- size = ngx_min(last - p, (ssize_t) ctx->field_rest);
- ctx->field_rest -= size;
- if (ctx->field_huffman) {
- if (ngx_http_huff_decode(&ctx->field_state, p, size,
- &ctx->field_end,
- ctx->field_rest == 0,
- r->connection->log)
- != NGX_OK)
- {
- ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
- "upstream sent invalid encoded header");
- return NGX_ERROR;
- }
- ctx->name.len = ctx->field_end - ctx->name.data;
- ctx->name.data[ctx->name.len] = '\0';
- } else {
- ctx->field_end = ngx_cpymem(ctx->field_end, p, size);
- ctx->name.data[ctx->name.len] = '\0';
- }
- p += size - 1;
- if (ctx->field_rest == 0) {
- state = sw_value_length;
- }
- break;
- case sw_value_length:
- ctx->field_huffman = ch & 0x80 ? 1 : 0;
- ctx->field_length = ch & ~0x80;
- if (ctx->field_length == 0x7f) {
- state = sw_value_length_2;
- break;
- }
- if (ctx->field_length == 0) {
- ngx_str_set(&ctx->value, "");
- goto done;
- }
- state = sw_value;
- break;
- case sw_value_length_2:
- ctx->field_length += ch & ~0x80;
- if (ch & 0x80) {
- state = sw_value_length_3;
- break;
- }
- state = sw_value;
- break;
- case sw_value_length_3:
- ctx->field_length += (ch & ~0x80) << 7;
- if (ch & 0x80) {
- state = sw_value_length_4;
- break;
- }
- state = sw_value;
- break;
- case sw_value_length_4:
- ctx->field_length += (ch & ~0x80) << 14;
- if (ch & 0x80) {
- ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
- "upstream sent too large http2 "
- "header value length");
- return NGX_ERROR;
- }
- state = sw_value;
- break;
- case sw_value:
- ctx->value.len = ctx->field_huffman ?
- ctx->field_length * 8 / 5 : ctx->field_length;
- ctx->value.data = ngx_pnalloc(r->pool, ctx->value.len + 1);
- if (ctx->value.data == NULL) {
- return NGX_ERROR;
- }
- ctx->field_end = ctx->value.data;
- ctx->field_rest = ctx->field_length;
- ctx->field_state = 0;
- state = sw_value_bytes;
-
- case sw_value_bytes:
- ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "grpc value: len:%uz h:%d last:%uz, rest:%uz",
- ctx->field_length,
- ctx->field_huffman,
- last - p,
- ctx->rest - (p - b->pos));
- size = ngx_min(last - p, (ssize_t) ctx->field_rest);
- ctx->field_rest -= size;
- if (ctx->field_huffman) {
- if (ngx_http_huff_decode(&ctx->field_state, p, size,
- &ctx->field_end,
- ctx->field_rest == 0,
- r->connection->log)
- != NGX_OK)
- {
- ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
- "upstream sent invalid encoded header");
- return NGX_ERROR;
- }
- ctx->value.len = ctx->field_end - ctx->value.data;
- ctx->value.data[ctx->value.len] = '\0';
- } else {
- ctx->field_end = ngx_cpymem(ctx->field_end, p, size);
- ctx->value.data[ctx->value.len] = '\0';
- }
- p += size - 1;
- if (ctx->field_rest == 0) {
- goto done;
- }
- break;
- }
- continue;
- done:
- p++;
- ctx->rest -= p - b->pos;
- ctx->fragment_state = sw_start;
- b->pos = p;
- if (ctx->index) {
- ctx->name = *ngx_http_v2_get_static_name(ctx->index);
- }
- if (ctx->index && !ctx->literal) {
- ctx->value = *ngx_http_v2_get_static_value(ctx->index);
- }
- if (!ctx->index) {
- if (ngx_http_grpc_validate_header_name(r, &ctx->name) != NGX_OK) {
- ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
- "upstream sent invalid header: \"%V: %V\"",
- &ctx->name, &ctx->value);
- return NGX_ERROR;
- }
- }
- if (!ctx->index || ctx->literal) {
- if (ngx_http_grpc_validate_header_value(r, &ctx->value) != NGX_OK) {
- ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
- "upstream sent invalid header: \"%V: %V\"",
- &ctx->name, &ctx->value);
- return NGX_ERROR;
- }
- }
- return NGX_OK;
- }
- ctx->rest -= p - b->pos;
- ctx->fragment_state = state;
- b->pos = p;
- if (ctx->rest > ctx->padding) {
- return NGX_AGAIN;
- }
- return NGX_DONE;
- }
- static ngx_int_t
- ngx_http_grpc_validate_header_name(ngx_http_request_t *r, ngx_str_t *s)
- {
- u_char ch;
- ngx_uint_t i;
- for (i = 0; i < s->len; i++) {
- ch = s->data[i];
- if (ch == ':' && i > 0) {
- return NGX_ERROR;
- }
- if (ch >= 'A' && ch <= 'Z') {
- return NGX_ERROR;
- }
- if (ch <= 0x20 || ch == 0x7f) {
- return NGX_ERROR;
- }
- }
- return NGX_OK;
- }
- static ngx_int_t
- ngx_http_grpc_validate_header_value(ngx_http_request_t *r, ngx_str_t *s)
- {
- u_char ch;
- ngx_uint_t i;
- for (i = 0; i < s->len; i++) {
- ch = s->data[i];
- if (ch == '\0' || ch == CR || ch == LF) {
- return NGX_ERROR;
- }
- }
- return NGX_OK;
- }
- static ngx_int_t
- ngx_http_grpc_parse_rst_stream(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx,
- ngx_buf_t *b)
- {
- u_char ch, *p, *last;
- enum {
- sw_start = 0,
- sw_error_2,
- sw_error_3,
- sw_error_4
- } state;
- if (b->last - b->pos < (ssize_t) ctx->rest) {
- last = b->last;
- } else {
- last = b->pos + ctx->rest;
- }
- state = ctx->frame_state;
- if (state == sw_start) {
- if (ctx->rest != 4) {
- ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
- "upstream sent rst stream frame "
- "with invalid length: %uz",
- ctx->rest);
- return NGX_ERROR;
- }
- }
- for (p = b->pos; p < last; p++) {
- ch = *p;
- #if 0
- #endif
- switch (state) {
- case sw_start:
- ctx->error = (ngx_uint_t) ch << 24;
- state = sw_error_2;
- break;
- case sw_error_2:
- ctx->error |= ch << 16;
- state = sw_error_3;
- break;
- case sw_error_3:
- ctx->error |= ch << 8;
- state = sw_error_4;
- break;
- case sw_error_4:
- ctx->error |= ch;
- state = sw_start;
- ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "grpc error: %ui", ctx->error);
- break;
- }
- }
- ctx->rest -= p - b->pos;
- ctx->frame_state = state;
- b->pos = p;
- if (ctx->rest > 0) {
- return NGX_AGAIN;
- }
- ctx->state = ngx_http_grpc_st_start;
- return NGX_OK;
- }
- static ngx_int_t
- ngx_http_grpc_parse_goaway(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx,
- ngx_buf_t *b)
- {
- u_char ch, *p, *last;
- enum {
- sw_start = 0,
- sw_last_stream_id_2,
- sw_last_stream_id_3,
- sw_last_stream_id_4,
- sw_error,
- sw_error_2,
- sw_error_3,
- sw_error_4,
- sw_debug
- } state;
- if (b->last - b->pos < (ssize_t) ctx->rest) {
- last = b->last;
- } else {
- last = b->pos + ctx->rest;
- }
- state = ctx->frame_state;
- if (state == sw_start) {
- if (ctx->stream_id) {
- ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
- "upstream sent goaway frame "
- "with non-zero stream id: %ui",
- ctx->stream_id);
- return NGX_ERROR;
- }
- if (ctx->rest < 8) {
- ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
- "upstream sent goaway frame "
- "with invalid length: %uz",
- ctx->rest);
- return NGX_ERROR;
- }
- }
- for (p = b->pos; p < last; p++) {
- ch = *p;
- #if 0
- #endif
- switch (state) {
- case sw_start:
- ctx->stream_id = (ch & 0x7f) << 24;
- state = sw_last_stream_id_2;
- break;
- case sw_last_stream_id_2:
- ctx->stream_id |= ch << 16;
- state = sw_last_stream_id_3;
- break;
- case sw_last_stream_id_3:
- ctx->stream_id |= ch << 8;
- state = sw_last_stream_id_4;
- break;
- case sw_last_stream_id_4:
- ctx->stream_id |= ch;
- state = sw_error;
- break;
- case sw_error:
- ctx->error = (ngx_uint_t) ch << 24;
- state = sw_error_2;
- break;
- case sw_error_2:
- ctx->error |= ch << 16;
- state = sw_error_3;
- break;
- case sw_error_3:
- ctx->error |= ch << 8;
- state = sw_error_4;
- break;
- case sw_error_4:
- ctx->error |= ch;
- state = sw_debug;
- break;
- case sw_debug:
- break;
- }
- }
- ctx->rest -= p - b->pos;
- ctx->frame_state = state;
- b->pos = p;
- if (ctx->rest > 0) {
- return NGX_AGAIN;
- }
- ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "grpc goaway: %ui, stream %ui",
- ctx->error, ctx->stream_id);
- ctx->state = ngx_http_grpc_st_start;
- return NGX_OK;
- }
- static ngx_int_t
- ngx_http_grpc_parse_window_update(ngx_http_request_t *r,
- ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b)
- {
- u_char ch, *p, *last;
- enum {
- sw_start = 0,
- sw_size_2,
- sw_size_3,
- sw_size_4
- } state;
- if (b->last - b->pos < (ssize_t) ctx->rest) {
- last = b->last;
- } else {
- last = b->pos + ctx->rest;
- }
- state = ctx->frame_state;
- if (state == sw_start) {
- if (ctx->rest != 4) {
- ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
- "upstream sent window update frame "
- "with invalid length: %uz",
- ctx->rest);
- return NGX_ERROR;
- }
- }
- for (p = b->pos; p < last; p++) {
- ch = *p;
- #if 0
- #endif
- switch (state) {
- case sw_start:
- ctx->window_update = (ch & 0x7f) << 24;
- state = sw_size_2;
- break;
- case sw_size_2:
- ctx->window_update |= ch << 16;
- state = sw_size_3;
- break;
- case sw_size_3:
- ctx->window_update |= ch << 8;
- state = sw_size_4;
- break;
- case sw_size_4:
- ctx->window_update |= ch;
- state = sw_start;
- break;
- }
- }
- ctx->rest -= p - b->pos;
- ctx->frame_state = state;
- b->pos = p;
- if (ctx->rest > 0) {
- return NGX_AGAIN;
- }
- ctx->state = ngx_http_grpc_st_start;
- ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "grpc window update: %ui", ctx->window_update);
- if (ctx->stream_id) {
- if (ctx->window_update > (size_t) NGX_HTTP_V2_MAX_WINDOW
- - ctx->send_window)
- {
- ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
- "upstream sent too large window update");
- return NGX_ERROR;
- }
- ctx->send_window += ctx->window_update;
- } else {
- if (ctx->window_update > NGX_HTTP_V2_MAX_WINDOW
- - ctx->connection->send_window)
- {
- ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
- "upstream sent too large window update");
- return NGX_ERROR;
- }
- ctx->connection->send_window += ctx->window_update;
- }
- return NGX_OK;
- }
- static ngx_int_t
- ngx_http_grpc_parse_settings(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx,
- ngx_buf_t *b)
- {
- u_char ch, *p, *last;
- ssize_t window_update;
- enum {
- sw_start = 0,
- sw_id,
- sw_id_2,
- sw_value,
- sw_value_2,
- sw_value_3,
- sw_value_4
- } state;
- if (b->last - b->pos < (ssize_t) ctx->rest) {
- last = b->last;
- } else {
- last = b->pos + ctx->rest;
- }
- state = ctx->frame_state;
- if (state == sw_start) {
- if (ctx->stream_id) {
- ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
- "upstream sent settings frame "
- "with non-zero stream id: %ui",
- ctx->stream_id);
- return NGX_ERROR;
- }
- if (ctx->flags & NGX_HTTP_V2_ACK_FLAG) {
- ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "grpc settings ack");
- if (ctx->rest != 0) {
- ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
- "upstream sent settings frame "
- "with ack flag and non-zero length: %uz",
- ctx->rest);
- return NGX_ERROR;
- }
- ctx->state = ngx_http_grpc_st_start;
- return NGX_OK;
- }
- if (ctx->rest % 6 != 0) {
- ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
- "upstream sent settings frame "
- "with invalid length: %uz",
- ctx->rest);
- return NGX_ERROR;
- }
- if (ctx->free == NULL && ctx->settings++ > 1000) {
- ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
- "upstream sent too many settings frames");
- return NGX_ERROR;
- }
- }
- for (p = b->pos; p < last; p++) {
- ch = *p;
- #if 0
- #endif
- switch (state) {
- case sw_start:
- case sw_id:
- ctx->setting_id = ch << 8;
- state = sw_id_2;
- break;
- case sw_id_2:
- ctx->setting_id |= ch;
- state = sw_value;
- break;
- case sw_value:
- ctx->setting_value = (ngx_uint_t) ch << 24;
- state = sw_value_2;
- break;
- case sw_value_2:
- ctx->setting_value |= ch << 16;
- state = sw_value_3;
- break;
- case sw_value_3:
- ctx->setting_value |= ch << 8;
- state = sw_value_4;
- break;
- case sw_value_4:
- ctx->setting_value |= ch;
- state = sw_id;
- ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "grpc setting: %ui %ui",
- ctx->setting_id, ctx->setting_value);
-
- if (ctx->setting_id == 0x04) {
-
- if (ctx->setting_value > NGX_HTTP_V2_MAX_WINDOW) {
- ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
- "upstream sent settings frame "
- "with too large initial window size: %ui",
- ctx->setting_value);
- return NGX_ERROR;
- }
- window_update = ctx->setting_value
- - ctx->connection->init_window;
- ctx->connection->init_window = ctx->setting_value;
- if (ctx->send_window > 0
- && window_update > (ssize_t) NGX_HTTP_V2_MAX_WINDOW
- - ctx->send_window)
- {
- ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
- "upstream sent settings frame "
- "with too large initial window size: %ui",
- ctx->setting_value);
- return NGX_ERROR;
- }
- ctx->send_window += window_update;
- }
- break;
- }
- }
- ctx->rest -= p - b->pos;
- ctx->frame_state = state;
- b->pos = p;
- if (ctx->rest > 0) {
- return NGX_AGAIN;
- }
- ctx->state = ngx_http_grpc_st_start;
- return ngx_http_grpc_send_settings_ack(r, ctx);
- }
- static ngx_int_t
- ngx_http_grpc_parse_ping(ngx_http_request_t *r,
- ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b)
- {
- u_char ch, *p, *last;
- enum {
- sw_start = 0,
- sw_data_2,
- sw_data_3,
- sw_data_4,
- sw_data_5,
- sw_data_6,
- sw_data_7,
- sw_data_8
- } state;
- if (b->last - b->pos < (ssize_t) ctx->rest) {
- last = b->last;
- } else {
- last = b->pos + ctx->rest;
- }
- state = ctx->frame_state;
- if (state == sw_start) {
- if (ctx->stream_id) {
- ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
- "upstream sent ping frame "
- "with non-zero stream id: %ui",
- ctx->stream_id);
- return NGX_ERROR;
- }
- if (ctx->rest != 8) {
- ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
- "upstream sent ping frame "
- "with invalid length: %uz",
- ctx->rest);
- return NGX_ERROR;
- }
- if (ctx->flags & NGX_HTTP_V2_ACK_FLAG) {
- ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
- "upstream sent ping frame with ack flag");
- return NGX_ERROR;
- }
- if (ctx->free == NULL && ctx->pings++ > 1000) {
- ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
- "upstream sent too many ping frames");
- return NGX_ERROR;
- }
- }
- for (p = b->pos; p < last; p++) {
- ch = *p;
- #if 0
- #endif
- if (state < sw_data_8) {
- ctx->ping_data[state] = ch;
- state++;
- } else {
- ctx->ping_data[7] = ch;
- state = sw_start;
- ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "grpc ping");
- }
- }
- ctx->rest -= p - b->pos;
- ctx->frame_state = state;
- b->pos = p;
- if (ctx->rest > 0) {
- return NGX_AGAIN;
- }
- ctx->state = ngx_http_grpc_st_start;
- return ngx_http_grpc_send_ping_ack(r, ctx);
- }
- static ngx_int_t
- ngx_http_grpc_send_settings_ack(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx)
- {
- ngx_chain_t *cl, **ll;
- ngx_http_grpc_frame_t *f;
- ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "grpc send settings ack");
- for (cl = ctx->out, ll = &ctx->out; cl; cl = cl->next) {
- ll = &cl->next;
- }
- cl = ngx_http_grpc_get_buf(r, ctx);
- if (cl == NULL) {
- return NGX_ERROR;
- }
- f = (ngx_http_grpc_frame_t *) cl->buf->last;
- cl->buf->last += sizeof(ngx_http_grpc_frame_t);
- f->length_0 = 0;
- f->length_1 = 0;
- f->length_2 = 0;
- f->type = NGX_HTTP_V2_SETTINGS_FRAME;
- f->flags = NGX_HTTP_V2_ACK_FLAG;
- f->stream_id_0 = 0;
- f->stream_id_1 = 0;
- f->stream_id_2 = 0;
- f->stream_id_3 = 0;
- *ll = cl;
- return NGX_OK;
- }
- static ngx_int_t
- ngx_http_grpc_send_ping_ack(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx)
- {
- ngx_chain_t *cl, **ll;
- ngx_http_grpc_frame_t *f;
- ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "grpc send ping ack");
- for (cl = ctx->out, ll = &ctx->out; cl; cl = cl->next) {
- ll = &cl->next;
- }
- cl = ngx_http_grpc_get_buf(r, ctx);
- if (cl == NULL) {
- return NGX_ERROR;
- }
- f = (ngx_http_grpc_frame_t *) cl->buf->last;
- cl->buf->last += sizeof(ngx_http_grpc_frame_t);
- f->length_0 = 0;
- f->length_1 = 0;
- f->length_2 = 8;
- f->type = NGX_HTTP_V2_PING_FRAME;
- f->flags = NGX_HTTP_V2_ACK_FLAG;
- f->stream_id_0 = 0;
- f->stream_id_1 = 0;
- f->stream_id_2 = 0;
- f->stream_id_3 = 0;
- cl->buf->last = ngx_copy(cl->buf->last, ctx->ping_data, 8);
- *ll = cl;
- return NGX_OK;
- }
- static ngx_int_t
- ngx_http_grpc_send_window_update(ngx_http_request_t *r,
- ngx_http_grpc_ctx_t *ctx)
- {
- size_t n;
- ngx_chain_t *cl, **ll;
- ngx_http_grpc_frame_t *f;
- ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "grpc send window update: %uz %uz",
- ctx->connection->recv_window, ctx->recv_window);
- for (cl = ctx->out, ll = &ctx->out; cl; cl = cl->next) {
- ll = &cl->next;
- }
- cl = ngx_http_grpc_get_buf(r, ctx);
- if (cl == NULL) {
- return NGX_ERROR;
- }
- f = (ngx_http_grpc_frame_t *) cl->buf->last;
- cl->buf->last += sizeof(ngx_http_grpc_frame_t);
- f->length_0 = 0;
- f->length_1 = 0;
- f->length_2 = 4;
- f->type = NGX_HTTP_V2_WINDOW_UPDATE_FRAME;
- f->flags = 0;
- f->stream_id_0 = 0;
- f->stream_id_1 = 0;
- f->stream_id_2 = 0;
- f->stream_id_3 = 0;
- n = NGX_HTTP_V2_MAX_WINDOW - ctx->connection->recv_window;
- ctx->connection->recv_window = NGX_HTTP_V2_MAX_WINDOW;
- *cl->buf->last++ = (u_char) ((n >> 24) & 0xff);
- *cl->buf->last++ = (u_char) ((n >> 16) & 0xff);
- *cl->buf->last++ = (u_char) ((n >> 8) & 0xff);
- *cl->buf->last++ = (u_char) (n & 0xff);
- f = (ngx_http_grpc_frame_t *) cl->buf->last;
- cl->buf->last += sizeof(ngx_http_grpc_frame_t);
- f->length_0 = 0;
- f->length_1 = 0;
- f->length_2 = 4;
- f->type = NGX_HTTP_V2_WINDOW_UPDATE_FRAME;
- f->flags = 0;
- f->stream_id_0 = (u_char) ((ctx->id >> 24) & 0xff);
- f->stream_id_1 = (u_char) ((ctx->id >> 16) & 0xff);
- f->stream_id_2 = (u_char) ((ctx->id >> 8) & 0xff);
- f->stream_id_3 = (u_char) (ctx->id & 0xff);
- n = NGX_HTTP_V2_MAX_WINDOW - ctx->recv_window;
- ctx->recv_window = NGX_HTTP_V2_MAX_WINDOW;
- *cl->buf->last++ = (u_char) ((n >> 24) & 0xff);
- *cl->buf->last++ = (u_char) ((n >> 16) & 0xff);
- *cl->buf->last++ = (u_char) ((n >> 8) & 0xff);
- *cl->buf->last++ = (u_char) (n & 0xff);
- *ll = cl;
- return NGX_OK;
- }
- static ngx_chain_t *
- ngx_http_grpc_get_buf(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx)
- {
- u_char *start;
- ngx_buf_t *b;
- ngx_chain_t *cl;
- cl = ngx_chain_get_free_buf(r->pool, &ctx->free);
- if (cl == NULL) {
- return NULL;
- }
- b = cl->buf;
- start = b->start;
- if (start == NULL) {
-
- start = ngx_palloc(r->pool, 2 * sizeof(ngx_http_grpc_frame_t) + 8);
- if (start == NULL) {
- return NULL;
- }
- }
- ngx_memzero(b, sizeof(ngx_buf_t));
- b->start = start;
- b->pos = start;
- b->last = start;
- b->end = start + 2 * sizeof(ngx_http_grpc_frame_t) + 8;
- b->tag = (ngx_buf_tag_t) &ngx_http_grpc_body_output_filter;
- b->temporary = 1;
- b->flush = 1;
- return cl;
- }
- static ngx_http_grpc_ctx_t *
- ngx_http_grpc_get_ctx(ngx_http_request_t *r)
- {
- ngx_http_grpc_ctx_t *ctx;
- ngx_http_upstream_t *u;
- ctx = ngx_http_get_module_ctx(r, ngx_http_grpc_module);
- if (ctx->connection == NULL) {
- u = r->upstream;
- if (ngx_http_grpc_get_connection_data(r, ctx, &u->peer) != NGX_OK) {
- return NULL;
- }
- }
- return ctx;
- }
- static ngx_int_t
- ngx_http_grpc_get_connection_data(ngx_http_request_t *r,
- ngx_http_grpc_ctx_t *ctx, ngx_peer_connection_t *pc)
- {
- ngx_connection_t *c;
- ngx_pool_cleanup_t *cln;
- c = pc->connection;
- if (pc->cached) {
-
- for (cln = c->pool->cleanup; cln; cln = cln->next) {
- if (cln->handler == ngx_http_grpc_cleanup) {
- ctx->connection = cln->data;
- break;
- }
- }
- if (ctx->connection == NULL) {
- ngx_log_error(NGX_LOG_ERR, c->log, 0,
- "no connection data found for "
- "keepalive http2 connection");
- return NGX_ERROR;
- }
- ctx->send_window = ctx->connection->init_window;
- ctx->recv_window = NGX_HTTP_V2_MAX_WINDOW;
- ctx->connection->last_stream_id += 2;
- ctx->id = ctx->connection->last_stream_id;
- return NGX_OK;
- }
- cln = ngx_pool_cleanup_add(c->pool, sizeof(ngx_http_grpc_conn_t));
- if (cln == NULL) {
- return NGX_ERROR;
- }
- cln->handler = ngx_http_grpc_cleanup;
- ctx->connection = cln->data;
- ctx->connection->init_window = NGX_HTTP_V2_DEFAULT_WINDOW;
- ctx->connection->send_window = NGX_HTTP_V2_DEFAULT_WINDOW;
- ctx->connection->recv_window = NGX_HTTP_V2_MAX_WINDOW;
- ctx->send_window = NGX_HTTP_V2_DEFAULT_WINDOW;
- ctx->recv_window = NGX_HTTP_V2_MAX_WINDOW;
- ctx->id = 1;
- ctx->connection->last_stream_id = 1;
- return NGX_OK;
- }
- static void
- ngx_http_grpc_cleanup(void *data)
- {
- #if 0
- #endif
- return;
- }
- static void
- ngx_http_grpc_abort_request(ngx_http_request_t *r)
- {
- ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "abort grpc request");
- return;
- }
- static void
- ngx_http_grpc_finalize_request(ngx_http_request_t *r, ngx_int_t rc)
- {
- ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "finalize grpc request");
- return;
- }
- static ngx_int_t
- ngx_http_grpc_internal_trailers_variable(ngx_http_request_t *r,
- ngx_http_variable_value_t *v, uintptr_t data)
- {
- ngx_table_elt_t *te;
- te = r->headers_in.te;
- if (te == NULL) {
- v->not_found = 1;
- return NGX_OK;
- }
- if (ngx_strlcasestrn(te->value.data, te->value.data + te->value.len,
- (u_char *) "trailers", 8 - 1)
- == NULL)
- {
- v->not_found = 1;
- return NGX_OK;
- }
- v->valid = 1;
- v->no_cacheable = 0;
- v->not_found = 0;
- v->data = (u_char *) "trailers";
- v->len = sizeof("trailers") - 1;
- return NGX_OK;
- }
- static ngx_int_t
- ngx_http_grpc_add_variables(ngx_conf_t *cf)
- {
- ngx_http_variable_t *var, *v;
- for (v = ngx_http_grpc_vars; v->name.len; v++) {
- var = ngx_http_add_variable(cf, &v->name, v->flags);
- if (var == NULL) {
- return NGX_ERROR;
- }
- var->get_handler = v->get_handler;
- var->data = v->data;
- }
- return NGX_OK;
- }
- static void *
- ngx_http_grpc_create_loc_conf(ngx_conf_t *cf)
- {
- ngx_http_grpc_loc_conf_t *conf;
- conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_grpc_loc_conf_t));
- if (conf == NULL) {
- return NULL;
- }
-
- conf->upstream.local = NGX_CONF_UNSET_PTR;
- conf->upstream.socket_keepalive = NGX_CONF_UNSET;
- conf->upstream.next_upstream_tries = NGX_CONF_UNSET_UINT;
- conf->upstream.connect_timeout = NGX_CONF_UNSET_MSEC;
- conf->upstream.send_timeout = NGX_CONF_UNSET_MSEC;
- conf->upstream.read_timeout = NGX_CONF_UNSET_MSEC;
- conf->upstream.next_upstream_timeout = NGX_CONF_UNSET_MSEC;
- conf->upstream.buffer_size = NGX_CONF_UNSET_SIZE;
- conf->upstream.hide_headers = NGX_CONF_UNSET_PTR;
- conf->upstream.pass_headers = NGX_CONF_UNSET_PTR;
- conf->upstream.intercept_errors = NGX_CONF_UNSET;
- #if (NGX_HTTP_SSL)
- conf->upstream.ssl_session_reuse = NGX_CONF_UNSET;
- conf->upstream.ssl_name = NGX_CONF_UNSET_PTR;
- conf->upstream.ssl_server_name = NGX_CONF_UNSET;
- conf->upstream.ssl_verify = NGX_CONF_UNSET;
- conf->ssl_verify_depth = NGX_CONF_UNSET_UINT;
- conf->upstream.ssl_certificate = NGX_CONF_UNSET_PTR;
- conf->upstream.ssl_certificate_key = NGX_CONF_UNSET_PTR;
- conf->upstream.ssl_passwords = NGX_CONF_UNSET_PTR;
- conf->ssl_conf_commands = NGX_CONF_UNSET_PTR;
- #endif
-
- conf->upstream.cyclic_temp_file = 0;
- conf->upstream.buffering = 0;
- conf->upstream.ignore_client_abort = 0;
- conf->upstream.send_lowat = 0;
- conf->upstream.bufs.num = 0;
- conf->upstream.busy_buffers_size = 0;
- conf->upstream.max_temp_file_size = 0;
- conf->upstream.temp_file_write_size = 0;
- conf->upstream.pass_request_headers = 1;
- conf->upstream.pass_request_body = 1;
- conf->upstream.force_ranges = 0;
- conf->upstream.pass_trailers = 1;
- conf->upstream.preserve_output = 1;
- conf->headers_source = NGX_CONF_UNSET_PTR;
- ngx_str_set(&conf->upstream.module, "grpc");
- return conf;
- }
- static char *
- ngx_http_grpc_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child)
- {
- ngx_http_grpc_loc_conf_t *prev = parent;
- ngx_http_grpc_loc_conf_t *conf = child;
- ngx_int_t rc;
- ngx_hash_init_t hash;
- ngx_http_core_loc_conf_t *clcf;
- ngx_conf_merge_ptr_value(conf->upstream.local,
- prev->upstream.local, NULL);
- ngx_conf_merge_value(conf->upstream.socket_keepalive,
- prev->upstream.socket_keepalive, 0);
- ngx_conf_merge_uint_value(conf->upstream.next_upstream_tries,
- prev->upstream.next_upstream_tries, 0);
- ngx_conf_merge_msec_value(conf->upstream.connect_timeout,
- prev->upstream.connect_timeout, 60000);
- ngx_conf_merge_msec_value(conf->upstream.send_timeout,
- prev->upstream.send_timeout, 60000);
- ngx_conf_merge_msec_value(conf->upstream.read_timeout,
- prev->upstream.read_timeout, 60000);
- ngx_conf_merge_msec_value(conf->upstream.next_upstream_timeout,
- prev->upstream.next_upstream_timeout, 0);
- ngx_conf_merge_size_value(conf->upstream.buffer_size,
- prev->upstream.buffer_size,
- (size_t) ngx_pagesize);
- ngx_conf_merge_bitmask_value(conf->upstream.ignore_headers,
- prev->upstream.ignore_headers,
- NGX_CONF_BITMASK_SET);
- ngx_conf_merge_bitmask_value(conf->upstream.next_upstream,
- prev->upstream.next_upstream,
- (NGX_CONF_BITMASK_SET
- |NGX_HTTP_UPSTREAM_FT_ERROR
- |NGX_HTTP_UPSTREAM_FT_TIMEOUT));
- if (conf->upstream.next_upstream & NGX_HTTP_UPSTREAM_FT_OFF) {
- conf->upstream.next_upstream = NGX_CONF_BITMASK_SET
- |NGX_HTTP_UPSTREAM_FT_OFF;
- }
- ngx_conf_merge_value(conf->upstream.intercept_errors,
- prev->upstream.intercept_errors, 0);
- #if (NGX_HTTP_SSL)
- if (ngx_http_grpc_merge_ssl(cf, conf, prev) != NGX_OK) {
- return NGX_CONF_ERROR;
- }
- ngx_conf_merge_value(conf->upstream.ssl_session_reuse,
- prev->upstream.ssl_session_reuse, 1);
- ngx_conf_merge_bitmask_value(conf->ssl_protocols, prev->ssl_protocols,
- (NGX_CONF_BITMASK_SET|NGX_SSL_DEFAULT_PROTOCOLS));
- ngx_conf_merge_str_value(conf->ssl_ciphers, prev->ssl_ciphers,
- "DEFAULT");
- ngx_conf_merge_ptr_value(conf->upstream.ssl_name,
- prev->upstream.ssl_name, NULL);
- ngx_conf_merge_value(conf->upstream.ssl_server_name,
- prev->upstream.ssl_server_name, 0);
- ngx_conf_merge_value(conf->upstream.ssl_verify,
- prev->upstream.ssl_verify, 0);
- ngx_conf_merge_uint_value(conf->ssl_verify_depth,
- prev->ssl_verify_depth, 1);
- ngx_conf_merge_str_value(conf->ssl_trusted_certificate,
- prev->ssl_trusted_certificate, "");
- ngx_conf_merge_str_value(conf->ssl_crl, prev->ssl_crl, "");
- ngx_conf_merge_ptr_value(conf->upstream.ssl_certificate,
- prev->upstream.ssl_certificate, NULL);
- ngx_conf_merge_ptr_value(conf->upstream.ssl_certificate_key,
- prev->upstream.ssl_certificate_key, NULL);
- ngx_conf_merge_ptr_value(conf->upstream.ssl_passwords,
- prev->upstream.ssl_passwords, NULL);
- ngx_conf_merge_ptr_value(conf->ssl_conf_commands,
- prev->ssl_conf_commands, NULL);
- if (conf->ssl && ngx_http_grpc_set_ssl(cf, conf) != NGX_OK) {
- return NGX_CONF_ERROR;
- }
- #endif
- hash.max_size = 512;
- hash.bucket_size = ngx_align(64, ngx_cacheline_size);
- hash.name = "grpc_headers_hash";
- if (ngx_http_upstream_hide_headers_hash(cf, &conf->upstream,
- &prev->upstream, ngx_http_grpc_hide_headers, &hash)
- != NGX_OK)
- {
- return NGX_CONF_ERROR;
- }
- clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module);
- if (clcf->noname
- && conf->upstream.upstream == NULL && conf->grpc_lengths == NULL)
- {
- conf->upstream.upstream = prev->upstream.upstream;
- conf->host = prev->host;
- conf->grpc_lengths = prev->grpc_lengths;
- conf->grpc_values = prev->grpc_values;
- #if (NGX_HTTP_SSL)
- conf->ssl = prev->ssl;
- #endif
- }
- if (clcf->lmt_excpt && clcf->handler == NULL
- && (conf->upstream.upstream || conf->grpc_lengths))
- {
- clcf->handler = ngx_http_grpc_handler;
- }
- ngx_conf_merge_ptr_value(conf->headers_source, prev->headers_source, NULL);
- if (conf->headers_source == prev->headers_source) {
- conf->headers = prev->headers;
- conf->host_set = prev->host_set;
- }
- rc = ngx_http_grpc_init_headers(cf, conf, &conf->headers,
- ngx_http_grpc_headers);
- if (rc != NGX_OK) {
- return NGX_CONF_ERROR;
- }
-
- if (prev->headers.hash.buckets == NULL
- && conf->headers_source == prev->headers_source)
- {
- prev->headers = conf->headers;
- prev->host_set = conf->host_set;
- }
- return NGX_CONF_OK;
- }
- static ngx_int_t
- ngx_http_grpc_init_headers(ngx_conf_t *cf, ngx_http_grpc_loc_conf_t *conf,
- ngx_http_grpc_headers_t *headers, ngx_keyval_t *default_headers)
- {
- u_char *p;
- size_t size;
- uintptr_t *code;
- ngx_uint_t i;
- ngx_array_t headers_names, headers_merged;
- ngx_keyval_t *src, *s, *h;
- ngx_hash_key_t *hk;
- ngx_hash_init_t hash;
- ngx_http_script_compile_t sc;
- ngx_http_script_copy_code_t *copy;
- if (headers->hash.buckets) {
- return NGX_OK;
- }
- if (ngx_array_init(&headers_names, cf->temp_pool, 4, sizeof(ngx_hash_key_t))
- != NGX_OK)
- {
- return NGX_ERROR;
- }
- if (ngx_array_init(&headers_merged, cf->temp_pool, 4, sizeof(ngx_keyval_t))
- != NGX_OK)
- {
- return NGX_ERROR;
- }
- headers->lengths = ngx_array_create(cf->pool, 64, 1);
- if (headers->lengths == NULL) {
- return NGX_ERROR;
- }
- headers->values = ngx_array_create(cf->pool, 512, 1);
- if (headers->values == NULL) {
- return NGX_ERROR;
- }
- if (conf->headers_source) {
- src = conf->headers_source->elts;
- for (i = 0; i < conf->headers_source->nelts; i++) {
- if (src[i].key.len == 4
- && ngx_strncasecmp(src[i].key.data, (u_char *) "Host", 4) == 0)
- {
- conf->host_set = 1;
- }
- s = ngx_array_push(&headers_merged);
- if (s == NULL) {
- return NGX_ERROR;
- }
- *s = src[i];
- }
- }
- h = default_headers;
- while (h->key.len) {
- src = headers_merged.elts;
- for (i = 0; i < headers_merged.nelts; i++) {
- if (ngx_strcasecmp(h->key.data, src[i].key.data) == 0) {
- goto next;
- }
- }
- s = ngx_array_push(&headers_merged);
- if (s == NULL) {
- return NGX_ERROR;
- }
- *s = *h;
- next:
- h++;
- }
- src = headers_merged.elts;
- for (i = 0; i < headers_merged.nelts; i++) {
- hk = ngx_array_push(&headers_names);
- if (hk == NULL) {
- return NGX_ERROR;
- }
- hk->key = src[i].key;
- hk->key_hash = ngx_hash_key_lc(src[i].key.data, src[i].key.len);
- hk->value = (void *) 1;
- if (src[i].value.len == 0) {
- continue;
- }
- copy = ngx_array_push_n(headers->lengths,
- sizeof(ngx_http_script_copy_code_t));
- if (copy == NULL) {
- return NGX_ERROR;
- }
- copy->code = (ngx_http_script_code_pt) (void *)
- ngx_http_script_copy_len_code;
- copy->len = src[i].key.len;
- size = (sizeof(ngx_http_script_copy_code_t)
- + src[i].key.len + sizeof(uintptr_t) - 1)
- & ~(sizeof(uintptr_t) - 1);
- copy = ngx_array_push_n(headers->values, size);
- if (copy == NULL) {
- return NGX_ERROR;
- }
- copy->code = ngx_http_script_copy_code;
- copy->len = src[i].key.len;
- p = (u_char *) copy + sizeof(ngx_http_script_copy_code_t);
- ngx_memcpy(p, src[i].key.data, src[i].key.len);
- ngx_memzero(&sc, sizeof(ngx_http_script_compile_t));
- sc.cf = cf;
- sc.source = &src[i].value;
- sc.flushes = &headers->flushes;
- sc.lengths = &headers->lengths;
- sc.values = &headers->values;
- if (ngx_http_script_compile(&sc) != NGX_OK) {
- return NGX_ERROR;
- }
- code = ngx_array_push_n(headers->lengths, sizeof(uintptr_t));
- if (code == NULL) {
- return NGX_ERROR;
- }
- *code = (uintptr_t) NULL;
- code = ngx_array_push_n(headers->values, sizeof(uintptr_t));
- if (code == NULL) {
- return NGX_ERROR;
- }
- *code = (uintptr_t) NULL;
- }
- code = ngx_array_push_n(headers->lengths, sizeof(uintptr_t));
- if (code == NULL) {
- return NGX_ERROR;
- }
- *code = (uintptr_t) NULL;
- hash.hash = &headers->hash;
- hash.key = ngx_hash_key_lc;
- hash.max_size = 512;
- hash.bucket_size = 64;
- hash.name = "grpc_headers_hash";
- hash.pool = cf->pool;
- hash.temp_pool = NULL;
- return ngx_hash_init(&hash, headers_names.elts, headers_names.nelts);
- }
- static char *
- ngx_http_grpc_pass(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
- {
- ngx_http_grpc_loc_conf_t *glcf = conf;
- size_t add;
- ngx_str_t *value, *url;
- ngx_url_t u;
- ngx_uint_t n;
- ngx_http_core_loc_conf_t *clcf;
- ngx_http_script_compile_t sc;
- if (glcf->upstream.upstream || glcf->grpc_lengths) {
- return "is duplicate";
- }
- clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module);
- clcf->handler = ngx_http_grpc_handler;
- if (clcf->name.len && clcf->name.data[clcf->name.len - 1] == '/') {
- clcf->auto_redirect = 1;
- }
- value = cf->args->elts;
- url = &value[1];
- n = ngx_http_script_variables_count(url);
- if (n) {
- ngx_memzero(&sc, sizeof(ngx_http_script_compile_t));
- sc.cf = cf;
- sc.source = url;
- sc.lengths = &glcf->grpc_lengths;
- sc.values = &glcf->grpc_values;
- sc.variables = n;
- sc.complete_lengths = 1;
- sc.complete_values = 1;
- if (ngx_http_script_compile(&sc) != NGX_OK) {
- return NGX_CONF_ERROR;
- }
- #if (NGX_HTTP_SSL)
- glcf->ssl = 1;
- #endif
- return NGX_CONF_OK;
- }
- if (ngx_strncasecmp(url->data, (u_char *) "grpc://", 7) == 0) {
- add = 7;
- } else if (ngx_strncasecmp(url->data, (u_char *) "grpcs://", 8) == 0) {
- #if (NGX_HTTP_SSL)
- glcf->ssl = 1;
- add = 8;
- #else
- ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
- "grpcs protocol requires SSL support");
- return NGX_CONF_ERROR;
- #endif
- } else {
- add = 0;
- }
- ngx_memzero(&u, sizeof(ngx_url_t));
- u.url.len = url->len - add;
- u.url.data = url->data + add;
- u.no_resolve = 1;
- glcf->upstream.upstream = ngx_http_upstream_add(cf, &u, 0);
- if (glcf->upstream.upstream == NULL) {
- return NGX_CONF_ERROR;
- }
- if (u.family != AF_UNIX) {
- if (u.no_port) {
- glcf->host = u.host;
- } else {
- glcf->host.len = u.host.len + 1 + u.port_text.len;
- glcf->host.data = u.host.data;
- }
- } else {
- ngx_str_set(&glcf->host, "localhost");
- }
- return NGX_CONF_OK;
- }
- #if (NGX_HTTP_SSL)
- static char *
- ngx_http_grpc_ssl_password_file(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
- {
- ngx_http_grpc_loc_conf_t *glcf = conf;
- ngx_str_t *value;
- if (glcf->upstream.ssl_passwords != NGX_CONF_UNSET_PTR) {
- return "is duplicate";
- }
- value = cf->args->elts;
- glcf->upstream.ssl_passwords = ngx_ssl_read_password_file(cf, &value[1]);
- if (glcf->upstream.ssl_passwords == NULL) {
- return NGX_CONF_ERROR;
- }
- return NGX_CONF_OK;
- }
- static char *
- ngx_http_grpc_ssl_conf_command_check(ngx_conf_t *cf, void *post, void *data)
- {
- #ifndef SSL_CONF_FLAG_FILE
- return "is not supported on this platform";
- #else
- return NGX_CONF_OK;
- #endif
- }
- static ngx_int_t
- ngx_http_grpc_merge_ssl(ngx_conf_t *cf, ngx_http_grpc_loc_conf_t *conf,
- ngx_http_grpc_loc_conf_t *prev)
- {
- ngx_uint_t preserve;
- if (conf->ssl_protocols == 0
- && conf->ssl_ciphers.data == NULL
- && conf->upstream.ssl_certificate == NGX_CONF_UNSET_PTR
- && conf->upstream.ssl_certificate_key == NGX_CONF_UNSET_PTR
- && conf->upstream.ssl_passwords == NGX_CONF_UNSET_PTR
- && conf->upstream.ssl_verify == NGX_CONF_UNSET
- && conf->ssl_verify_depth == NGX_CONF_UNSET_UINT
- && conf->ssl_trusted_certificate.data == NULL
- && conf->ssl_crl.data == NULL
- && conf->upstream.ssl_session_reuse == NGX_CONF_UNSET
- && conf->ssl_conf_commands == NGX_CONF_UNSET_PTR)
- {
- if (prev->upstream.ssl) {
- conf->upstream.ssl = prev->upstream.ssl;
- return NGX_OK;
- }
- preserve = 1;
- } else {
- preserve = 0;
- }
- conf->upstream.ssl = ngx_pcalloc(cf->pool, sizeof(ngx_ssl_t));
- if (conf->upstream.ssl == NULL) {
- return NGX_ERROR;
- }
- conf->upstream.ssl->log = cf->log;
-
- if (preserve) {
- prev->upstream.ssl = conf->upstream.ssl;
- }
- return NGX_OK;
- }
- static ngx_int_t
- ngx_http_grpc_set_ssl(ngx_conf_t *cf, ngx_http_grpc_loc_conf_t *glcf)
- {
- ngx_pool_cleanup_t *cln;
- if (glcf->upstream.ssl->ctx) {
- return NGX_OK;
- }
- if (ngx_ssl_create(glcf->upstream.ssl, glcf->ssl_protocols, NULL)
- != NGX_OK)
- {
- return NGX_ERROR;
- }
- cln = ngx_pool_cleanup_add(cf->pool, 0);
- if (cln == NULL) {
- ngx_ssl_cleanup_ctx(glcf->upstream.ssl);
- return NGX_ERROR;
- }
- cln->handler = ngx_ssl_cleanup_ctx;
- cln->data = glcf->upstream.ssl;
- if (ngx_ssl_ciphers(cf, glcf->upstream.ssl, &glcf->ssl_ciphers, 0)
- != NGX_OK)
- {
- return NGX_ERROR;
- }
- if (glcf->upstream.ssl_certificate
- && glcf->upstream.ssl_certificate->value.len)
- {
- if (glcf->upstream.ssl_certificate_key == NULL) {
- ngx_log_error(NGX_LOG_EMERG, cf->log, 0,
- "no \"grpc_ssl_certificate_key\" is defined "
- "for certificate \"%V\"",
- &glcf->upstream.ssl_certificate->value);
- return NGX_ERROR;
- }
- if (glcf->upstream.ssl_certificate->lengths
- || glcf->upstream.ssl_certificate_key->lengths)
- {
- glcf->upstream.ssl_passwords =
- ngx_ssl_preserve_passwords(cf, glcf->upstream.ssl_passwords);
- if (glcf->upstream.ssl_passwords == NULL) {
- return NGX_ERROR;
- }
- } else {
- if (ngx_ssl_certificate(cf, glcf->upstream.ssl,
- &glcf->upstream.ssl_certificate->value,
- &glcf->upstream.ssl_certificate_key->value,
- glcf->upstream.ssl_passwords)
- != NGX_OK)
- {
- return NGX_ERROR;
- }
- }
- }
- if (glcf->upstream.ssl_verify) {
- if (glcf->ssl_trusted_certificate.len == 0) {
- ngx_log_error(NGX_LOG_EMERG, cf->log, 0,
- "no grpc_ssl_trusted_certificate for grpc_ssl_verify");
- return NGX_ERROR;
- }
- if (ngx_ssl_trusted_certificate(cf, glcf->upstream.ssl,
- &glcf->ssl_trusted_certificate,
- glcf->ssl_verify_depth)
- != NGX_OK)
- {
- return NGX_ERROR;
- }
- if (ngx_ssl_crl(cf, glcf->upstream.ssl, &glcf->ssl_crl) != NGX_OK) {
- return NGX_ERROR;
- }
- }
- if (ngx_ssl_client_session_cache(cf, glcf->upstream.ssl,
- glcf->upstream.ssl_session_reuse)
- != NGX_OK)
- {
- return NGX_ERROR;
- }
- #ifdef TLSEXT_TYPE_application_layer_protocol_negotiation
- if (SSL_CTX_set_alpn_protos(glcf->upstream.ssl->ctx,
- (u_char *) "\x02h2", 3)
- != 0)
- {
- ngx_ssl_error(NGX_LOG_EMERG, cf->log, 0,
- "SSL_CTX_set_alpn_protos() failed");
- return NGX_ERROR;
- }
- #endif
- if (ngx_ssl_conf_commands(cf, glcf->upstream.ssl, glcf->ssl_conf_commands)
- != NGX_OK)
- {
- return NGX_ERROR;
- }
- return NGX_OK;
- }
- #endif
One Level Up
Top Level