/* * Copyright (C) Igor Sysoev */ #include #include #include #include typedef struct { ngx_http_upstream_conf_t upstream; ngx_peers_t *peers; ngx_uint_t params; ngx_str_t root; ngx_str_t index; ngx_array_t *vars; ngx_str_t *location; } ngx_http_fastcgi_loc_conf_t; typedef struct { ngx_list_t headers; ngx_table_elt_t *status; ngx_table_elt_t *content_type; ngx_table_elt_t *content_length; ngx_table_elt_t *x_powered_by; #if (NGX_HTTP_GZIP) ngx_table_elt_t *content_encoding; #endif } ngx_http_fastcgi_headers_in_t; typedef struct { ngx_http_fastcgi_headers_in_t headers_in; } ngx_http_fastcgi_upstream_t; typedef enum { ngx_http_fastcgi_st_version = 0, ngx_http_fastcgi_st_type, ngx_http_fastcgi_st_request_id_hi, ngx_http_fastcgi_st_request_id_lo, ngx_http_fastcgi_st_content_length_hi, ngx_http_fastcgi_st_content_length_lo, ngx_http_fastcgi_st_padding_length, ngx_http_fastcgi_st_reserved, ngx_http_fastcgi_st_data, ngx_http_fastcgi_st_padding, } ngx_http_fastcgi_state_e; typedef struct { ngx_http_fastcgi_state_e state; u_char *pos; u_char *last; ngx_uint_t type; size_t length; size_t padding; ngx_uint_t header; ngx_http_fastcgi_upstream_t *upstream; } ngx_http_fastcgi_ctx_t; #define NGX_HTTP_FASTCGI_REMOTE_ADDR 0x00000002 #define NGX_HTTP_FASTCGI_REMOTE_USER 0x00000004 #define NGX_HTTP_FASTCGI_SERVER_NAME 0x00000008 #define NGX_HTTP_FASTCGI_SERVER_ADDR 0x00000010 #define NGX_HTTP_FASTCGI_SERVER_PORT 0x00000020 #define NGX_HTTP_FASTCGI_SCRIPT_NAME 0x00000040 #define NGX_HTTP_FASTCGI_AUTH_TYPE 0x00000080 #define NGX_HTTP_FASTCGI_SERVER_PROTOCOL 0x00000100 #define NGX_HTTP_FASTCGI_SERVER_SOFTWARE 0x00000200 #define NGX_HTTP_FASTCGI_GATEWAY_INTERFACE 0x00000400 #define NGX_HTTP_FASTCGI_REQUEST_URI 0x00000800 #define NGX_HTTP_FASTCGI_REDIRECT_STATUS 0x00001000 #define NGX_HTTP_FASTCGI_DOCUMENT_ROOT 0x00002000 #define NGX_HTTP_FASTCGI_SCRIPT_FILENAME 0x00004000 #define NGX_HTTP_FASTCGI_REMOTE_PORT 0x00008000 #define NGX_HTTP_FASTCGI_RESPONDER 1 #define NGX_HTTP_FASTCGI_BEGIN_REQUEST 1 #define NGX_HTTP_FASTCGI_ABORT_REQUEST 2 #define NGX_HTTP_FASTCGI_END_REQUEST 3 #define NGX_HTTP_FASTCGI_PARAMS 4 #define NGX_HTTP_FASTCGI_STDIN 5 #define NGX_HTTP_FASTCGI_STDOUT 6 #define NGX_HTTP_FASTCGI_STDERR 7 #define NGX_HTTP_FASTCGI_DATA 8 typedef struct { u_char version; u_char type; u_char request_id_hi; u_char request_id_lo; u_char content_length_hi; u_char content_length_lo; u_char padding_length; u_char reserved; } ngx_http_fastcgi_header_t; typedef struct { u_char role_hi; u_char role_lo; u_char flags; u_char reserved[5]; } ngx_http_fastcgi_begin_request_t; static ngx_int_t ngx_http_fastcgi_create_request(ngx_http_request_t *r); static ngx_int_t ngx_http_fastcgi_reinit_request(ngx_http_request_t *r); static ngx_int_t ngx_http_fastcgi_process_header(ngx_http_request_t *r); static ngx_int_t ngx_http_fastcgi_send_header(ngx_http_request_t *r); static ngx_int_t ngx_http_fastcgi_input_filter(ngx_event_pipe_t *p, ngx_buf_t *buf); static ngx_int_t ngx_http_fastcgi_process_record(ngx_http_request_t *r, ngx_http_fastcgi_ctx_t *f); static void ngx_http_fastcgi_abort_request(ngx_http_request_t *r); static void ngx_http_fastcgi_finalize_request(ngx_http_request_t *r, ngx_int_t rc); static char *ngx_http_fastcgi_pass(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); static char *ngx_http_fastcgi_set_var(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); static char *ngx_http_fastcgi_lowat_check(ngx_conf_t *cf, void *post, void *data); static void *ngx_http_fastcgi_create_loc_conf(ngx_conf_t *cf); static char *ngx_http_fastcgi_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child); static ngx_str_t ngx_http_fastcgi_methods[] = { ngx_string("GET"), ngx_string("HEAD"), ngx_string("POST") }; #if (NGX_PCRE) static ngx_str_t ngx_http_fastcgi_uri = ngx_string("/"); #endif static ngx_http_header_t ngx_http_fastcgi_headers_in[] = { { ngx_string("Status"), offsetof(ngx_http_fastcgi_headers_in_t, status) }, { ngx_string("Content-Type"), offsetof(ngx_http_fastcgi_headers_in_t, content_type) }, { ngx_string("Content-Length"), offsetof(ngx_http_fastcgi_headers_in_t, content_length) }, { ngx_string("X-Powered-By"), offsetof(ngx_http_fastcgi_headers_in_t, x_powered_by) }, #if (NGX_HTTP_GZIP) { ngx_string("Content-Encoding"), offsetof(ngx_http_fastcgi_headers_in_t, content_encoding) }, #endif { ngx_null_string, 0 } }; static ngx_conf_post_t ngx_http_fastcgi_lowat_post = { ngx_http_fastcgi_lowat_check }; static ngx_conf_bitmask_t ngx_http_fastcgi_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("http_500"), NGX_HTTP_UPSTREAM_FT_HTTP_500 }, { ngx_string("http_404"), NGX_HTTP_UPSTREAM_FT_HTTP_404 }, { ngx_null_string, 0 } }; static ngx_conf_bitmask_t ngx_http_fastcgi_params_masks[] = { { ngx_string("remote_addr"), NGX_HTTP_FASTCGI_REMOTE_ADDR }, { ngx_string("server_port"), NGX_HTTP_FASTCGI_SERVER_PORT }, { ngx_string("server_addr"), NGX_HTTP_FASTCGI_SERVER_ADDR }, { ngx_string("server_name"), NGX_HTTP_FASTCGI_SERVER_NAME }, { ngx_string("script_name"), NGX_HTTP_FASTCGI_SCRIPT_NAME }, { ngx_string("server_protocol"), NGX_HTTP_FASTCGI_SERVER_PROTOCOL }, { ngx_string("server_software"), NGX_HTTP_FASTCGI_SERVER_SOFTWARE }, { ngx_string("gateway_interface"), NGX_HTTP_FASTCGI_GATEWAY_INTERFACE }, { ngx_string("redirect_status"), NGX_HTTP_FASTCGI_REDIRECT_STATUS }, { ngx_string("request_uri"), NGX_HTTP_FASTCGI_REQUEST_URI }, { ngx_string("document_root"), NGX_HTTP_FASTCGI_DOCUMENT_ROOT }, { ngx_string("script_filename"), NGX_HTTP_FASTCGI_SCRIPT_FILENAME }, { ngx_string("remote_port"), NGX_HTTP_FASTCGI_REMOTE_PORT }, { ngx_null_string, 0 } }; static ngx_command_t ngx_http_fastcgi_commands[] = { { ngx_string("fastcgi_pass"), NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, ngx_http_fastcgi_pass, NGX_HTTP_LOC_CONF_OFFSET, 0, NULL }, { ngx_string("fastcgi_root"), 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_fastcgi_loc_conf_t, root), NULL }, { ngx_string("fastcgi_index"), 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_fastcgi_loc_conf_t, index), NULL }, { ngx_string("fastcgi_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_fastcgi_loc_conf_t, upstream.connect_timeout), NULL }, { ngx_string("fastcgi_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_fastcgi_loc_conf_t, upstream.send_timeout), NULL }, { ngx_string("fastcgi_send_lowat"), 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_fastcgi_loc_conf_t, upstream.send_lowat), &ngx_http_fastcgi_lowat_post }, { ngx_string("fastcgi_header_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_fastcgi_loc_conf_t, upstream.header_buffer_size), NULL }, { ngx_string("fastcgi_redirect_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_fastcgi_loc_conf_t, upstream.redirect_errors), NULL }, { ngx_string("fastcgi_x_powered_by"), 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_fastcgi_loc_conf_t, upstream.x_powered_by), NULL }, { ngx_string("fastcgi_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_fastcgi_loc_conf_t, upstream.read_timeout), NULL }, { ngx_string("fastcgi_buffers"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE2, ngx_conf_set_bufs_slot, NGX_HTTP_LOC_CONF_OFFSET, offsetof(ngx_http_fastcgi_loc_conf_t, upstream.bufs), NULL }, { ngx_string("fastcgi_busy_buffers_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_fastcgi_loc_conf_t, upstream.busy_buffers_size), NULL }, { ngx_string("fastcgi_temp_path"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1234, ngx_conf_set_path_slot, NGX_HTTP_LOC_CONF_OFFSET, offsetof(ngx_http_fastcgi_loc_conf_t, upstream.temp_path), (void *) ngx_garbage_collector_temp_handler }, { ngx_string("fastcgi_max_temp_file_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_fastcgi_loc_conf_t, upstream.max_temp_file_size), NULL }, { ngx_string("fastcgi_temp_file_write_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_fastcgi_loc_conf_t, upstream.temp_file_write_size), NULL }, { ngx_string("fastcgi_next_upstream"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_ANY, ngx_conf_set_bitmask_slot, NGX_HTTP_LOC_CONF_OFFSET, offsetof(ngx_http_fastcgi_loc_conf_t, upstream.next_upstream), &ngx_http_fastcgi_next_upstream_masks }, { ngx_string("fastcgi_set_var"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, ngx_http_fastcgi_set_var, NGX_HTTP_LOC_CONF_OFFSET, 0, NULL }, { ngx_string("fastcgi_params"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_ANY, ngx_conf_set_bitmask_slot, NGX_HTTP_LOC_CONF_OFFSET, offsetof(ngx_http_fastcgi_loc_conf_t, params), &ngx_http_fastcgi_params_masks }, ngx_null_command }; ngx_http_module_t ngx_http_fastcgi_module_ctx = { NULL, /* pre conf */ NULL, /* create main configuration */ NULL, /* init main configuration */ NULL, /* create server configuration */ NULL, /* merge server configuration */ ngx_http_fastcgi_create_loc_conf, /* create location configuration */ ngx_http_fastcgi_merge_loc_conf /* merge location configuration */ }; ngx_module_t ngx_http_fastcgi_module = { NGX_MODULE, &ngx_http_fastcgi_module_ctx, /* module context */ ngx_http_fastcgi_commands, /* module directives */ NGX_HTTP_MODULE, /* module type */ NULL, /* init module */ NULL /* init process */ }; static ngx_int_t ngx_http_fastcgi_handler(ngx_http_request_t *r) { ngx_int_t rc; ngx_http_upstream_t *u; ngx_http_fastcgi_loc_conf_t *flcf; flcf = ngx_http_get_module_loc_conf(r, ngx_http_fastcgi_module); u = ngx_pcalloc(r->pool, sizeof(ngx_http_upstream_t)); if (u == NULL) { return NGX_HTTP_INTERNAL_SERVER_ERROR; } u->peer.log = r->connection->log; u->peer.log_error = NGX_ERROR_ERR; u->peer.peers = flcf->peers; u->peer.tries = flcf->peers->number; #if (NGX_THREADS) u->peer.lock = &r->connection->lock; #endif u->output.tag = (ngx_buf_tag_t) &ngx_http_fastcgi_module; u->conf = &flcf->upstream; u->location0 = flcf->location; u->create_request = ngx_http_fastcgi_create_request; u->reinit_request = ngx_http_fastcgi_reinit_request; u->process_header = ngx_http_fastcgi_process_header; u->send_header = ngx_http_fastcgi_send_header; u->abort_request = ngx_http_fastcgi_abort_request; u->finalize_request = ngx_http_fastcgi_finalize_request; u->pipe.input_filter = ngx_http_fastcgi_input_filter; u->pipe.input_ctx = r; u->log_ctx = r->connection->log->data; u->log_handler = ngx_http_upstream_log_error; u->schema0.len = sizeof("fastcgi://") - 1; u->schema0.data = (u_char *) "fastcgi://"; u->uri0.len = sizeof("/") - 1; u->uri0.data = (u_char *) "/"; r->upstream = u; 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_fastcgi_create_request(ngx_http_request_t *r) { u_char ch, *pos, addr_text[INET_ADDRSTRLEN], port_text[sizeof("65535") - 1]; size_t size, len, index, padding, addr_len, port_len; off_t file_pos; ngx_buf_t *b; socklen_t slen; ngx_chain_t *cl, *body; ngx_uint_t i, n, next, *vindex, port; ngx_list_part_t *part; ngx_table_elt_t *header; struct sockaddr_in sin, *sinp; ngx_http_variable_t *var; ngx_http_variable_value_t *value; ngx_http_core_loc_conf_t *clcf; ngx_http_core_main_conf_t *cmcf; ngx_http_fastcgi_header_t *h; ngx_http_fastcgi_loc_conf_t *flcf; ngx_http_fastcgi_begin_request_t *br; flcf = ngx_http_get_module_loc_conf(r, ngx_http_fastcgi_module); if ((flcf->params & NGX_HTTP_FASTCGI_SERVER_ADDR) && r->in_addr == 0) { slen = sizeof(struct sockaddr_in); if (getsockname(r->connection->fd, (struct sockaddr *) &sin, &slen) == -1) { ngx_log_error(NGX_LOG_CRIT, r->connection->log, ngx_socket_errno, "getsockname() failed"); return NGX_ERROR; } r->in_addr = sin.sin_addr.s_addr; } addr_len = ngx_inet_ntop(r->connection->listening->family, &r->in_addr, addr_text, INET_ADDRSTRLEN); if (addr_len == 0) { return NGX_ERROR; } #if (NGX_SUPPRESS_WARN) clcf = NULL; var = NULL; vindex = NULL; #endif if (r->upstream->method) { len = 1 + 1 + sizeof("REQUEST_METHOD") - 1 + ngx_http_fastcgi_methods[r->upstream->method - 1].len; } else { len = 1 + ((r->method_name.len - 1 > 127) ? 4 : 1) + sizeof("REQUEST_METHOD") - 1 + r->method_name.len - 1; } index = (r->uri.data[r->uri.len - 1] == '/') ? flcf->index.len : 0; len += 1 + ((flcf->root.len + r->uri.len + index > 127) ? 4 : 1) + sizeof("PATH_TRANSLATED") - 1 + flcf->root.len + r->uri.len + index; if (r->args.len) { len += 1 + ((r->args.len > 127) ? 4 : 1) + sizeof("QUERY_STRING") - 1 + r->args.len; } if (r->headers_in.content_length_n > 0) { len += 1 + ((r->headers_in.content_length->value.len > 127) ? 4 : 1) + sizeof("CONTENT_LENGTH") - 1 + r->headers_in.content_length->value.len; } if (r->headers_in.content_type) { len += 1 + ((r->headers_in.content_type->value.len > 127) ? 4 : 1) + sizeof("CONTENT_TYPE") - 1 + r->headers_in.content_type->value.len; } if (flcf->params & NGX_HTTP_FASTCGI_REDIRECT_STATUS) { len += 1 + 1 + sizeof("REDIRECT_STATUS200") - 1; } if (flcf->params & NGX_HTTP_FASTCGI_REQUEST_URI) { len += 1 + ((r->unparsed_uri.len > 127) ? 4 : 1) + sizeof("REQUEST_URI") - 1 + r->unparsed_uri.len; } if (flcf->params & NGX_HTTP_FASTCGI_DOCUMENT_ROOT) { clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); len += 1 + ((clcf->root.len > 127) ? 4 : 1) + sizeof("DOCUMENT_ROOT") - 1 + clcf->root.len; } if (flcf->params & NGX_HTTP_FASTCGI_SCRIPT_FILENAME) { len += 1 + ((flcf->root.len + r->uri.len + index > 127) ? 4 : 1) + sizeof("SCRIPT_FILENAME") - 1 + flcf->root.len + r->uri.len + index; } if (flcf->params & NGX_HTTP_FASTCGI_SCRIPT_NAME) { len += 1 + ((r->uri.len + index > 127) ? 4 : 1) + sizeof("SCRIPT_NAME") - 1 + r->uri.len + index ; } if (flcf->params & NGX_HTTP_FASTCGI_REMOTE_ADDR) { len += 1 + 1 + sizeof("REMOTE_ADDR") - 1 + r->connection->addr_text.len; } port_len = 0; if (flcf->params & NGX_HTTP_FASTCGI_REMOTE_PORT) { /* AF_INET only */ if (r->connection->sockaddr->sa_family == AF_INET) { sinp = (struct sockaddr_in *) r->connection->sockaddr; port = ntohs(sinp->sin_port); if (port > 0 && port < 65536) { port_len = ngx_sprintf(port_text, "%ui", port) - port_text; } len += 1 + 1 + sizeof("REMOTE_PORT") - 1 + port_len; } } if (flcf->params & NGX_HTTP_FASTCGI_SERVER_NAME) { len += 1 + 1 + sizeof("SERVER_NAME") - 1 + r->server_name.len; } if (flcf->params & NGX_HTTP_FASTCGI_SERVER_PORT) { len += 1 + 1 + sizeof("SERVER_PORT") - 1 + r->port_text->len - 1; } if (flcf->params & NGX_HTTP_FASTCGI_SERVER_ADDR) { len += 1 + 1 + sizeof("SERVER_ADDR") - 1 + addr_len; } if (flcf->params & NGX_HTTP_FASTCGI_SERVER_PROTOCOL && r->http_protocol.len) { len += 1 + ((r->http_protocol.len > 127) ? 4 : 1) + sizeof("SERVER_PROTOCOL") - 1 + r->http_protocol.len; } if (flcf->params & NGX_HTTP_FASTCGI_SERVER_SOFTWARE) { len += 1 + 1 + sizeof("SERVER_SOFTWARE") - 1 + sizeof(NGINX_VER) - 1; } if (flcf->params & NGX_HTTP_FASTCGI_GATEWAY_INTERFACE) { len += 1 + 1 + sizeof("GATEWAY_INTERFACE") - 1 + sizeof("CGI/1.1") - 1; } if (flcf->vars) { cmcf = ngx_http_get_module_main_conf(r, ngx_http_core_module); var = cmcf->variables.elts; vindex = flcf->vars->elts; for (i = 0; i < flcf->vars->nelts; i++) { value = ngx_http_get_indexed_variable(r, vindex[i]); if (value == NULL) { continue; } if (value->text.len) { len += 1 + 1 + var[vindex[i]].name.len + value->text.len; } } } part = &r->headers_in.headers.part; header = part->elts; for (i = 0; /* void */; i++) { if (i >= part->nelts) { if (part->next == NULL) { break; } part = part->next; header = part->elts; i = 0; } len += ((header[i].key.len > 127) ? 4 : 1) + ((header[i].value.len > 127) ? 4 : 1) + 5 + header[i].key.len + header[i].value.len; } if (len > 65535) { ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0, "fastcgi: the request record is too big"); return NGX_ERROR; } padding = 8 - len % 8; padding = (padding == 8) ? 0 : padding; size = sizeof(ngx_http_fastcgi_header_t) + sizeof(ngx_http_fastcgi_begin_request_t) + sizeof(ngx_http_fastcgi_header_t) /* NGX_HTTP_FASTCGI_PARAMS */ + len + padding + sizeof(ngx_http_fastcgi_header_t) /* NGX_HTTP_FASTCGI_PARAMS */ + sizeof(ngx_http_fastcgi_header_t); /* NGX_HTTP_FASTCGI_STDIN */ b = ngx_create_temp_buf(r->pool, size); if (b == NULL) { return NGX_ERROR; } cl = ngx_alloc_chain_link(r->pool); if (cl == NULL) { return NGX_ERROR; } cl->buf = b; h = (ngx_http_fastcgi_header_t *) b->pos; h->version = 1; h->type = NGX_HTTP_FASTCGI_BEGIN_REQUEST; h->request_id_hi = 0; h->request_id_lo = 1; h->content_length_hi = 0; h->content_length_lo = sizeof(ngx_http_fastcgi_begin_request_t); h->padding_length = 0; h->reserved = 0; br = (ngx_http_fastcgi_begin_request_t *) (b->pos + sizeof(ngx_http_fastcgi_header_t)); br->role_hi = 0; br->role_lo = NGX_HTTP_FASTCGI_RESPONDER; br->flags = 0; /* NGX_HTTP_FASTCGI_KEEP_CONN */ br->reserved[0] = 0; br->reserved[1] = 0; br->reserved[2] = 0; br->reserved[3] = 0; br->reserved[4] = 0; h = (ngx_http_fastcgi_header_t *) (b->pos + sizeof(ngx_http_fastcgi_header_t) + sizeof(ngx_http_fastcgi_begin_request_t)); h->version = 1; h->type = NGX_HTTP_FASTCGI_PARAMS; h->request_id_hi = 0; h->request_id_lo = 1; h->content_length_hi = (u_char) ((len >> 8) & 0xff); h->content_length_lo = (u_char) (len & 0xff); h->padding_length = (u_char) padding; h->reserved = 0; b->last = b->pos + sizeof(ngx_http_fastcgi_header_t) + sizeof(ngx_http_fastcgi_begin_request_t) + sizeof(ngx_http_fastcgi_header_t); *b->last++ = sizeof("PATH_TRANSLATED") - 1; len = flcf->root.len + r->uri.len + index; if (len > 127) { *b->last++ = (u_char) (((len >> 24) & 0x7f) | 0x80); *b->last++ = (u_char) ((len >> 16) & 0xff); *b->last++ = (u_char) ((len >> 8) & 0xff); *b->last++ = (u_char) (len & 0xff); } else { *b->last++ = (u_char) len; } b->last = ngx_cpymem(b->last, "PATH_TRANSLATED", sizeof("PATH_TRANSLATED") - 1); b->last = ngx_cpymem(b->last, flcf->root.data, flcf->root.len); b->last = ngx_cpymem(b->last, r->uri.data, r->uri.len); if (index) { b->last = ngx_cpymem(b->last, flcf->index.data, index); } *b->last++ = sizeof("REQUEST_METHOD") - 1; if (r->upstream->method) { *b->last++ = (u_char) ngx_http_fastcgi_methods[r->upstream->method - 1].len; b->last = ngx_cpymem(b->last, "REQUEST_METHOD", sizeof("REQUEST_METHOD") - 1); b->last = ngx_cpymem(b->last, ngx_http_fastcgi_methods[r->upstream->method - 1].data, ngx_http_fastcgi_methods[r->upstream->method - 1].len); } else { len = r->method_name.len - 1; if (len > 127) { *b->last++ = (u_char) (((len >> 24) & 0x7f) | 0x80); *b->last++ = (u_char) ((len >> 16) & 0xff); *b->last++ = (u_char) ((len >> 8) & 0xff); *b->last++ = (u_char) (len & 0xff); } else { *b->last++ = (u_char) len; } b->last = ngx_cpymem(b->last, "REQUEST_METHOD", sizeof("REQUEST_METHOD") - 1); b->last = ngx_cpymem(b->last, r->method_name.data, len); } if (r->args.len) { *b->last++ = sizeof("QUERY_STRING") - 1; len = r->args.len; if (len > 127) { *b->last++ = (u_char) (((len >> 24) & 0x7f) | 0x80); *b->last++ = (u_char) ((len >> 16) & 0xff); *b->last++ = (u_char) ((len >> 8) & 0xff); *b->last++ = (u_char) (len & 0xff); } else { *b->last++ = (u_char) len; } b->last = ngx_cpymem(b->last, "QUERY_STRING", sizeof("QUERY_STRING") - 1); b->last = ngx_cpymem(b->last, r->args.data, len); } if (r->headers_in.content_length_n > 0) { *b->last++ = sizeof("CONTENT_LENGTH") - 1; len = r->headers_in.content_length->value.len; if (len > 127) { *b->last++ = (u_char) (((len >> 24) & 0x7f) | 0x80); *b->last++ = (u_char) ((len >> 16) & 0xff); *b->last++ = (u_char) ((len >> 8) & 0xff); *b->last++ = (u_char) (len & 0xff); } else { *b->last++ = (u_char) len; } b->last = ngx_cpymem(b->last, "CONTENT_LENGTH", sizeof("CONTENT_LENGTH") - 1); b->last = ngx_cpymem(b->last, r->headers_in.content_length->value.data, len); } if (r->headers_in.content_type) { *b->last++ = sizeof("CONTENT_TYPE") - 1; len = r->headers_in.content_type->value.len; if (len > 127) { *b->last++ = (u_char) (((len >> 24) & 0x7f) | 0x80); *b->last++ = (u_char) ((len >> 16) & 0xff); *b->last++ = (u_char) ((len >> 8) & 0xff); *b->last++ = (u_char) (len & 0xff); } else { *b->last++ = (u_char) len; } b->last = ngx_cpymem(b->last, "CONTENT_TYPE", sizeof("CONTENT_TYPE") - 1); b->last = ngx_cpymem(b->last, r->headers_in.content_type->value.data, len); } if (flcf->params & NGX_HTTP_FASTCGI_REDIRECT_STATUS) { *b->last++ = sizeof("REDIRECT_STATUS") - 1; *b->last++ = sizeof("200") - 1; b->last = ngx_cpymem(b->last, "REDIRECT_STATUS200", sizeof("REDIRECT_STATUS200") - 1); } if (flcf->params & NGX_HTTP_FASTCGI_REQUEST_URI) { *b->last++ = sizeof("REQUEST_URI") - 1; len = r->unparsed_uri.len; if (len > 127) { *b->last++ = (u_char) (((len >> 24) & 0x7f) | 0x80); *b->last++ = (u_char) ((len >> 16) & 0xff); *b->last++ = (u_char) ((len >> 8) & 0xff); *b->last++ = (u_char) (len & 0xff); } else { *b->last++ = (u_char) len; } b->last = ngx_cpymem(b->last, "REQUEST_URI", sizeof("REQUEST_URI") - 1); b->last = ngx_cpymem(b->last, r->unparsed_uri.data, len); } if (flcf->params & NGX_HTTP_FASTCGI_DOCUMENT_ROOT) { *b->last++ = sizeof("DOCUMENT_ROOT") - 1; len = clcf->root.len; if (len > 127) { *b->last++ = (u_char) (((len >> 24) & 0x7f) | 0x80); *b->last++ = (u_char) ((len >> 16) & 0xff); *b->last++ = (u_char) ((len >> 8) & 0xff); *b->last++ = (u_char) (len & 0xff); } else { *b->last++ = (u_char) len; } b->last = ngx_cpymem(b->last, "DOCUMENT_ROOT", sizeof("DOCUMENT_ROOT") - 1); b->last = ngx_cpymem(b->last, clcf->root.data, len); } if (flcf->params & NGX_HTTP_FASTCGI_SCRIPT_FILENAME) { *b->last++ = sizeof("SCRIPT_FILENAME") - 1; len = flcf->root.len + r->uri.len + index; if (len > 127) { *b->last++ = (u_char) (((len >> 24) & 0x7f) | 0x80); *b->last++ = (u_char) ((len >> 16) & 0xff); *b->last++ = (u_char) ((len >> 8) & 0xff); *b->last++ = (u_char) (len & 0xff); } else { *b->last++ = (u_char) len; } b->last = ngx_cpymem(b->last, "SCRIPT_FILENAME", sizeof("SCRIPT_FILENAME") - 1); b->last = ngx_cpymem(b->last, flcf->root.data, flcf->root.len); b->last = ngx_cpymem(b->last, r->uri.data, r->uri.len); if (index) { b->last = ngx_cpymem(b->last, flcf->index.data, index); } } if (flcf->params & NGX_HTTP_FASTCGI_SCRIPT_NAME) { *b->last++ = sizeof("SCRIPT_NAME") - 1; len = r->uri.len + index; if (len > 127) { *b->last++ = (u_char) (((len >> 24) & 0x7f) | 0x80); *b->last++ = (u_char) ((len >> 16) & 0xff); *b->last++ = (u_char) ((len >> 8) & 0xff); *b->last++ = (u_char) (len & 0xff); } else { *b->last++ = (u_char) len; } b->last = ngx_cpymem(b->last, "SCRIPT_NAME", sizeof("SCRIPT_NAME") - 1); b->last = ngx_cpymem(b->last, r->uri.data, r->uri.len); if (index) { b->last = ngx_cpymem(b->last, flcf->index.data, index); } } if (flcf->params & NGX_HTTP_FASTCGI_REMOTE_ADDR) { *b->last++ = sizeof("REMOTE_ADDR") - 1; *b->last++ = (u_char) (r->connection->addr_text.len); b->last = ngx_cpymem(b->last, "REMOTE_ADDR", sizeof("REMOTE_ADDR") - 1); b->last = ngx_cpymem(b->last, r->connection->addr_text.data, r->connection->addr_text.len); } if (port_len) { *b->last++ = sizeof("REMOTE_PORT") - 1; *b->last++ = (u_char) port_len; b->last = ngx_cpymem(b->last, "REMOTE_PORT", sizeof("REMOTE_PORT") - 1); b->last = ngx_cpymem(b->last, port_text, port_len); } if (flcf->params & NGX_HTTP_FASTCGI_SERVER_NAME) { *b->last++ = sizeof("SERVER_NAME") - 1; *b->last++ = (u_char) r->server_name.len; b->last = ngx_cpymem(b->last, "SERVER_NAME", sizeof("SERVER_NAME") - 1); b->last = ngx_cpymem(b->last, r->server_name.data, r->server_name.len); } if (flcf->params & NGX_HTTP_FASTCGI_SERVER_PORT) { *b->last++ = sizeof("SERVER_PORT") - 1; *b->last++ = (u_char) (r->port_text->len - 1); b->last = ngx_cpymem(b->last, "SERVER_PORT", sizeof("SERVER_PORT") - 1); b->last = ngx_cpymem(b->last, r->port_text->data + 1, r->port_text->len - 1); } if (flcf->params & NGX_HTTP_FASTCGI_SERVER_ADDR) { *b->last++ = sizeof("SERVER_ADDR") - 1; *b->last++ = (u_char) addr_len; b->last = ngx_cpymem(b->last, "SERVER_ADDR", sizeof("SERVER_ADDR") - 1); b->last = ngx_cpymem(b->last, addr_text, addr_len); } if (flcf->params & NGX_HTTP_FASTCGI_SERVER_PROTOCOL && r->http_protocol.len) { *b->last++ = sizeof("SERVER_PROTOCOL") - 1; len = r->http_protocol.len; if (len > 127) { *b->last++ = (u_char) (((len >> 24) & 0x7f) | 0x80); *b->last++ = (u_char) ((len >> 16) & 0xff); *b->last++ = (u_char) ((len >> 8) & 0xff); *b->last++ = (u_char) (len & 0xff); } else { *b->last++ = (u_char) len; } b->last = ngx_cpymem(b->last, "SERVER_PROTOCOL", sizeof("SERVER_PROTOCOL") - 1); b->last = ngx_cpymem(b->last, r->http_protocol.data, len); } if (flcf->params & NGX_HTTP_FASTCGI_SERVER_SOFTWARE) { *b->last++ = sizeof("SERVER_SOFTWARE") - 1; *b->last++ = (u_char) (sizeof(NGINX_VER) - 1); b->last = ngx_cpymem(b->last, "SERVER_SOFTWARE", sizeof("SERVER_SOFTWARE") - 1); b->last = ngx_cpymem(b->last, NGINX_VER, sizeof(NGINX_VER) - 1); } if (flcf->params & NGX_HTTP_FASTCGI_GATEWAY_INTERFACE) { *b->last++ = sizeof("GATEWAY_INTERFACE") - 1; *b->last++ = (u_char) (sizeof("CGI/1.1") - 1); b->last = ngx_cpymem(b->last, "GATEWAY_INTERFACE", sizeof("GATEWAY_INTERFACE") - 1); b->last = ngx_cpymem(b->last, "CGI/1.1", sizeof("CGI/1.1") - 1); } if (flcf->vars) { for (i = 0; i < flcf->vars->nelts; i++) { value = ngx_http_get_indexed_variable(r, vindex[i]); if (value == NULL) { continue; } if (value->text.len == 0) { continue; } *b->last++ = (u_char) var[vindex[i]].name.len; *b->last++ = (u_char) value->text.len; b->last = ngx_cpymem(b->last, var[vindex[i]].name.data, var[vindex[i]].name.len); b->last = ngx_cpymem(b->last, value->text.data, value->text.len); } } part = &r->headers_in.headers.part; header = part->elts; for (i = 0; /* void */; i++) { if (i >= part->nelts) { if (part->next == NULL) { break; } part = part->next; header = part->elts; i = 0; } len = 5 + header[i].key.len; if (len > 127) { *b->last++ = (u_char) (((len >> 24) & 0x7f) | 0x80); *b->last++ = (u_char) ((len >> 16) & 0xff); *b->last++ = (u_char) ((len >> 8) & 0xff); *b->last++ = (u_char) (len & 0xff); } else { *b->last++ = (u_char) len; } len = header[i].value.len; if (len > 127) { *b->last++ = (u_char) (((len >> 24) & 0x7f) | 0x80); *b->last++ = (u_char) ((len >> 16) & 0xff); *b->last++ = (u_char) ((len >> 8) & 0xff); *b->last++ = (u_char) (len & 0xff); } else { *b->last++ = (u_char) len; } b->last = ngx_cpymem(b->last, "HTTP_", sizeof("HTTP_") - 1); for (n = 0; n < header[i].key.len; n++) { ch = header[i].key.data[n]; if (ch >= 'a' && ch <= 'z') { ch &= ~0x20; } else if (ch == '-') { ch = '_'; } *b->last++ = ch; } b->last = ngx_cpymem(b->last, header[i].value.data, header[i].value.len); } if (padding) { ngx_memzero(b->last, padding); b->last += padding; } h = (ngx_http_fastcgi_header_t *) b->last; b->last += sizeof(ngx_http_fastcgi_header_t); h->version = 1; h->type = NGX_HTTP_FASTCGI_PARAMS; h->request_id_hi = 0; h->request_id_lo = 1; h->content_length_hi = 0; h->content_length_lo = 0; h->padding_length = 0; h->reserved = 0; h = (ngx_http_fastcgi_header_t *) b->last; b->last += sizeof(ngx_http_fastcgi_header_t); body = r->request_body->bufs; r->request_body->bufs = cl; #if (NGX_SUPPRESS_WARN) file_pos = 0; pos = NULL; #endif while (body) { if (body->buf->in_file) { file_pos = body->buf->file_pos; } else { pos = body->buf->pos; } next = 0; do { b = ngx_alloc_buf(r->pool); if (b == NULL) { return NGX_ERROR; } ngx_memcpy(b, body->buf, sizeof(ngx_buf_t)); if (body->buf->in_file) { b->file_pos = file_pos; file_pos += 32 * 1024; if (file_pos > body->buf->file_last) { file_pos = body->buf->file_last; next = 1; } b->file_last = file_pos; len = (ngx_uint_t) (file_pos - b->file_pos); } else { b->pos = pos; pos += 32 * 1024; if (pos > body->buf->last) { pos = body->buf->last; next = 1; } b->last = pos; len = (ngx_uint_t) (pos - b->pos); } padding = 8 - len % 8; padding = (padding == 8) ? 0 : padding; h->version = 1; h->type = NGX_HTTP_FASTCGI_STDIN; h->request_id_hi = 0; h->request_id_lo = 1; h->content_length_hi = (u_char) ((len >> 8) & 0xff); h->content_length_lo = (u_char) (len & 0xff); h->padding_length = (u_char) padding; h->reserved = 0; cl->next = ngx_alloc_chain_link(r->pool); if (cl->next == NULL) { return NGX_ERROR; } cl = cl->next; cl->buf = b; b = ngx_create_temp_buf(r->pool, sizeof(ngx_http_fastcgi_header_t) + padding); if (b == NULL) { return NGX_ERROR; } if (padding) { ngx_memzero(b->last, padding); b->last += padding; } h = (ngx_http_fastcgi_header_t *) b->last; b->last += sizeof(ngx_http_fastcgi_header_t); cl->next = ngx_alloc_chain_link(r->pool); if (cl->next == NULL) { return NGX_ERROR; } cl = cl->next; cl->buf = b; } while (!next); body = body->next; } h->version = 1; h->type = NGX_HTTP_FASTCGI_STDIN; h->request_id_hi = 0; h->request_id_lo = 1; h->content_length_hi = 0; h->content_length_lo = 0; h->padding_length = 0; h->reserved = 0; cl->next = NULL; return NGX_OK; } static ngx_int_t ngx_http_fastcgi_reinit_request(ngx_http_request_t *r) { ngx_http_fastcgi_ctx_t *f; f = ngx_http_get_module_ctx(r, ngx_http_fastcgi_module); if (f == NULL) { return NGX_OK; } f->state = ngx_http_fastcgi_st_version; f->header = 0; ngx_memzero(&f->upstream->headers_in, sizeof(ngx_http_fastcgi_headers_in_t)); if (f->upstream->headers_in.headers.part.elts) { if (ngx_list_init(&f->upstream->headers_in.headers, r->pool, 8, sizeof(ngx_table_elt_t)) == NGX_ERROR) { return NGX_ERROR; } } return NGX_OK; } static ngx_int_t ngx_http_fastcgi_process_header(ngx_http_request_t *r) { u_char *start, *last; ngx_str_t *status_line, line; ngx_int_t rc, status; ngx_uint_t i; ngx_table_elt_t *h; ngx_http_upstream_t *u; ngx_http_fastcgi_ctx_t *f; f = ngx_http_get_module_ctx(r, ngx_http_fastcgi_module); if (f == NULL) { f = ngx_pcalloc(r->pool, sizeof(ngx_http_fastcgi_ctx_t)); if (f == NULL) { return NGX_HTTP_INTERNAL_SERVER_ERROR; } ngx_http_set_ctx(r, f, ngx_http_fastcgi_module); f->upstream = ngx_pcalloc(r->pool, sizeof(ngx_http_fastcgi_upstream_t)); if (f->upstream == NULL) { return NGX_HTTP_INTERNAL_SERVER_ERROR; } if (ngx_list_init(&f->upstream->headers_in.headers, r->pool, 8, sizeof(ngx_table_elt_t)) == NGX_ERROR) { return NGX_HTTP_INTERNAL_SERVER_ERROR; } } u = r->upstream; for ( ;; ) { if (f->state < ngx_http_fastcgi_st_data) { f->pos = u->header_in.pos; f->last = u->header_in.last; rc = ngx_http_fastcgi_process_record(r, f); u->header_in.pos = f->pos; u->header_in.last = f->last; if (rc == NGX_AGAIN) { return NGX_AGAIN; } if (rc == NGX_ERROR) { return NGX_HTTP_UPSTREAM_INVALID_HEADER; } if (f->type != NGX_HTTP_FASTCGI_STDOUT && f->type != NGX_HTTP_FASTCGI_STDERR) { ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "upstream sent unexpected FastCGI record: %d", f->type); return NGX_HTTP_UPSTREAM_INVALID_HEADER; } if (f->type == NGX_HTTP_FASTCGI_STDOUT && f->length == 0) { ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "upstream closed prematurely FastCGI stdout"); return NGX_HTTP_UPSTREAM_INVALID_HEADER; } } if (f->state == ngx_http_fastcgi_st_padding) { if (u->header_in.pos + f->padding < u->header_in.last) { f->state = ngx_http_fastcgi_st_version; u->header_in.pos += f->padding; continue; } if (u->header_in.pos + f->padding == u->header_in.last) { f->state = ngx_http_fastcgi_st_version; u->header_in.pos = u->header_in.last; return NGX_AGAIN; } f->padding -= u->header_in.last - u->header_in.pos; u->header_in.pos = u->header_in.last; return NGX_AGAIN; } /* f->state == ngx_http_fastcgi_st_data */ if (f->type == NGX_HTTP_FASTCGI_STDERR) { if (f->header) { ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0, "upstream split a header in FastCGI records"); return NGX_HTTP_UPSTREAM_INVALID_HEADER; } if (f->length) { line.data = u->header_in.pos; if (u->header_in.pos + f->length <= u->header_in.last) { line.len = f->length; u->header_in.pos += f->length; f->length = 0; f->state = ngx_http_fastcgi_st_padding; } else { line.len = u->header_in.last - u->header_in.pos; f->length -= u->header_in.last - u->header_in.pos; u->header_in.pos = u->header_in.last; } while (line.data[line.len - 1] == LF || line.data[line.len - 1] == CR || line.data[line.len - 1] == '.' || line.data[line.len - 1] == ' ') { line.len--; } ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "FastCGI sent in stderr: \"%V\"", &line); if (u->header_in.pos == u->header_in.last) { return NGX_AGAIN; } } else { f->state = ngx_http_fastcgi_st_version; } continue; } /* f->type == NGX_HTTP_FASTCGI_STDOUT */ start = u->header_in.pos; if (u->header_in.pos + f->length < u->header_in.last) { /* * set u->header_in.last to the end of the FastCGI record data * for ngx_http_parse_header_line() */ last = u->header_in.last; u->header_in.last = u->header_in.pos + f->length; } else { last = NULL; } f->header = 1; for ( ;; ) { rc = ngx_http_parse_header_line(r, &u->header_in); ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "http fastcgi parser: %d", rc); if (rc == NGX_AGAIN) { break; } if (rc == NGX_OK) { /* a header line has been parsed successfully */ h = ngx_list_push(&f->upstream->headers_in.headers); if (h == NULL) { return NGX_HTTP_INTERNAL_SERVER_ERROR; } h->key.len = r->header_name_end - r->header_name_start; h->value.len = r->header_end - r->header_start; h->key.data = ngx_palloc(r->pool, h->key.len + 1 + h->value.len + 1); if (h->key.data == NULL) { return NGX_HTTP_INTERNAL_SERVER_ERROR; } h->value.data = h->key.data + h->key.len + 1; ngx_cpystrn(h->key.data, r->header_name_start, h->key.len + 1); ngx_cpystrn(h->value.data, r->header_start, h->value.len + 1); for (i = 0; ngx_http_fastcgi_headers_in[i].name.len != 0; i++) { if (ngx_http_fastcgi_headers_in[i].name.len != h->key.len) { continue; } if (ngx_strcasecmp(ngx_http_fastcgi_headers_in[i].name.data, h->key.data) == 0) { *((ngx_table_elt_t **) ((char *) &f->upstream->headers_in + ngx_http_fastcgi_headers_in[i].offset)) = h; break; } } ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "http fastcgi header: \"%V: %V\"", &h->key, &h->value); continue; } if (rc == NGX_HTTP_PARSE_HEADER_DONE) { /* a whole header has been parsed successfully */ ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "http fastcgi header done"); if (f->upstream->headers_in.status) { status_line = &f->upstream->headers_in.status->value; status = ngx_atoi(status_line->data, 3); if (status == NGX_ERROR) { return NGX_HTTP_INTERNAL_SERVER_ERROR; } r->headers_out.status = status; r->headers_out.status_line = *status_line; } else { r->headers_out.status = 200; r->headers_out.status_line.len = sizeof("200 OK") - 1; r->headers_out.status_line.data = (u_char *) "200 OK"; } u->state->status = r->headers_out.status; #if 0 if (u->cachable) { u->cachable = ngx_http_upstream_is_cachable(r); } #endif break; } /* there was error while a header line parsing */ ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, ngx_http_upstream_header_errors[rc - NGX_HTTP_PARSE_HEADER_ERROR]); return NGX_HTTP_UPSTREAM_INVALID_HEADER; } if (last) { u->header_in.last = last; } f->length -= u->header_in.pos - start; if (rc == NGX_AGAIN) { if (u->header_in.pos == u->header_in.last) { return NGX_AGAIN; } ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0, "upstream split a header in FastCGI records"); return NGX_HTTP_UPSTREAM_INVALID_HEADER; } if (f->length == 0) { if (f->padding) { f->state = ngx_http_fastcgi_st_padding; } else { f->state = ngx_http_fastcgi_st_version; } } return NGX_OK; } } static ngx_int_t ngx_http_fastcgi_send_header(ngx_http_request_t *r) { ngx_uint_t i; ngx_list_part_t *part; ngx_table_elt_t *ho, *h; ngx_http_fastcgi_ctx_t *f; ngx_http_fastcgi_headers_in_t *headers_in; f = ngx_http_get_module_ctx(r, ngx_http_fastcgi_module); headers_in = &f->upstream->headers_in; part = &headers_in->headers.part; h = part->elts; for (i = 0; /* void */; i++) { if (i >= part->nelts) { if (part->next == NULL) { break; } part = part->next; h = part->elts; i = 0; } /* ignore some headers */ if (&h[i] == headers_in->status) { continue; } if (&h[i] == headers_in->x_powered_by && !r->upstream->conf->x_powered_by) { continue; } /* "Content-Type" is handled specially */ if (&h[i] == headers_in->content_type) { r->headers_out.content_type = &h[i]; r->headers_out.content_type->key.len = 0; continue; } /* copy some header pointers and set up r->headers_out */ ho = ngx_list_push(&r->headers_out.headers); if (ho == NULL) { return NGX_HTTP_INTERNAL_SERVER_ERROR; } *ho = h[i]; #if (NGX_HTTP_GZIP) if (&h[i] == headers_in->content_encoding) { r->headers_out.content_encoding = ho; continue; } #endif if (&h[i] == headers_in->content_length) { r->headers_out.content_length = ho; r->headers_out.content_length_n = ngx_atoi(ho->value.data, ho->value.len); continue; } } return ngx_http_send_header(r); } static ngx_int_t ngx_http_fastcgi_input_filter(ngx_event_pipe_t *p, ngx_buf_t *buf) { ngx_int_t rc; ngx_buf_t *b, **prev; ngx_str_t line; ngx_chain_t *cl; ngx_http_request_t *r; ngx_http_fastcgi_ctx_t *f; if (buf->pos == buf->last) { return NGX_OK; } r = p->input_ctx; f = ngx_http_get_module_ctx(r, ngx_http_fastcgi_module); b = NULL; prev = &buf->shadow; f->pos = buf->pos; f->last = buf->last; for ( ;; ) { if (f->state < ngx_http_fastcgi_st_data) { rc = ngx_http_fastcgi_process_record(r, f); if (rc == NGX_AGAIN) { break; } if (rc == NGX_ERROR) { return NGX_ERROR; } if (f->type == NGX_HTTP_FASTCGI_STDOUT && f->length == 0) { f->state = ngx_http_fastcgi_st_version; p->upstream_done = 1; ngx_log_debug0(NGX_LOG_DEBUG_HTTP, p->log, 0, "http fastcgi closed stdout"); continue; } if (f->type == NGX_HTTP_FASTCGI_END_REQUEST) { f->state = ngx_http_fastcgi_st_version; p->upstream_done = 1; ngx_log_debug0(NGX_LOG_DEBUG_HTTP, p->log, 0, "http fastcgi sent end request"); break; } } if (f->state == ngx_http_fastcgi_st_padding) { if (f->pos + f->padding < f->last) { f->state = ngx_http_fastcgi_st_version; f->pos += f->padding; continue; } if (f->pos + f->padding == f->last) { f->state = ngx_http_fastcgi_st_version; break; } f->padding -= f->last - f->pos; break; } /* f->state == ngx_http_fastcgi_st_data */ if (f->type == NGX_HTTP_FASTCGI_STDERR) { if (f->length) { line.data = f->pos; if (f->pos + f->length <= f->last) { line.len = f->length; f->pos += f->length; f->length = 0; f->state = ngx_http_fastcgi_st_padding; } else { line.len = f->last - f->pos; f->length -= f->last - f->pos; f->pos = f->last; } while (line.data[line.len - 1] == LF || line.data[line.len - 1] == CR || line.data[line.len - 1] == '.' || line.data[line.len - 1] == ' ') { line.len--; } ngx_log_error(NGX_LOG_ERR, p->log, 0, "FastCGI sent in stderr: \"%V\"", &line); if (f->pos == f->last) { break; } } else { f->state = ngx_http_fastcgi_st_version; } continue; } /* f->type == NGX_HTTP_FASTCGI_STDOUT */ if (p->free) { b = p->free->buf; p->free = p->free->next; } else { b = ngx_alloc_buf(p->pool); if (b == NULL) { return NGX_ERROR; } } ngx_memzero(b, sizeof(ngx_buf_t)); b->pos = f->pos; b->start = buf->start; b->end = buf->end; b->tag = p->tag; b->temporary = 1; b->recycled = 1; *prev = b; prev = &b->shadow; cl = ngx_alloc_chain_link(p->pool); if (cl == NULL) { return NGX_ERROR; } cl->buf = b; cl->next = NULL; if (p->in) { *p->last_in = cl; } else { p->in = cl; } p->last_in = &cl->next; /* STUB */ b->num = buf->num; ngx_log_debug1(NGX_LOG_DEBUG_EVENT, p->log, 0, "input buf #%d", b->num); if (f->pos + f->length < f->last) { if (f->padding) { f->state = ngx_http_fastcgi_st_padding; } else { f->state = ngx_http_fastcgi_st_version; } f->pos += f->length; b->last = f->pos; continue; } if (f->pos + f->length == f->last) { if (f->padding) { f->state = ngx_http_fastcgi_st_padding; } else { f->state = ngx_http_fastcgi_st_version; } b->last = f->last; break; } f->length -= f->last - f->pos; b->last = f->last; break; } if (b) { b->shadow = buf; b->last_shadow = 1; return NGX_OK; } /* there is no data record in the buf, add it to free chain */ if (ngx_event_pipe_add_free_buf(p, buf) != NGX_OK) { return NGX_ERROR; } return NGX_OK; } static ngx_int_t ngx_http_fastcgi_process_record(ngx_http_request_t *r, ngx_http_fastcgi_ctx_t *f) { u_char ch, *p; ngx_http_fastcgi_state_e state; state = f->state; for (p = f->pos; p < f->last; p++) { ch = *p; ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "http fastcgi record byte: %02Xd", ch); switch (state) { case ngx_http_fastcgi_st_version: if (ch != 1) { ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "upstream sent unsupported FastCGI " "protocol version: %d", ch); return NGX_ERROR; } state = ngx_http_fastcgi_st_type; break; case ngx_http_fastcgi_st_type: switch (ch) { case NGX_HTTP_FASTCGI_STDOUT: case NGX_HTTP_FASTCGI_STDERR: case NGX_HTTP_FASTCGI_END_REQUEST: f->type = (ngx_uint_t) ch; break; default: ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "upstream sent invalid FastCGI " "record type: %d", ch); return NGX_ERROR; } state = ngx_http_fastcgi_st_request_id_hi; break; /* we support the single request per connection */ case ngx_http_fastcgi_st_request_id_hi: if (ch != 0) { ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "upstream sent unexpected FastCGI " "request id high byte: %d", ch); return NGX_ERROR; } state = ngx_http_fastcgi_st_request_id_lo; break; case ngx_http_fastcgi_st_request_id_lo: if (ch != 1) { ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "upstream sent unexpected FastCGI " "request id low byte: %d", ch); return NGX_ERROR; } state = ngx_http_fastcgi_st_content_length_hi; break; case ngx_http_fastcgi_st_content_length_hi: f->length = ch << 8; state = ngx_http_fastcgi_st_content_length_lo; break; case ngx_http_fastcgi_st_content_length_lo: f->length |= (size_t) ch; state = ngx_http_fastcgi_st_padding_length; break; case ngx_http_fastcgi_st_padding_length: f->padding = (size_t) ch; state = ngx_http_fastcgi_st_reserved; break; case ngx_http_fastcgi_st_reserved: state = ngx_http_fastcgi_st_data; ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "http fastcgi record length: %z", f->length); f->pos = p + 1; f->state = state; return NGX_OK; /* suppress warning */ case ngx_http_fastcgi_st_data: case ngx_http_fastcgi_st_padding: break; } } f->pos = p + 1; f->state = state; return NGX_AGAIN; } static void ngx_http_fastcgi_abort_request(ngx_http_request_t *r) { ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "abort http fastcgi request"); return; } static void ngx_http_fastcgi_finalize_request(ngx_http_request_t *r, ngx_int_t rc) { ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "finalize http fastcgi request"); return; } static char * ngx_http_fastcgi_pass(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) { ngx_http_fastcgi_loc_conf_t *lcf = conf; ngx_str_t *value; ngx_inet_upstream_t inet_upstream; ngx_http_core_loc_conf_t *clcf; #if (NGX_HAVE_UNIX_DOMAIN) ngx_unix_domain_upstream_t unix_upstream; #endif value = cf->args->elts; if (ngx_strncasecmp(value[1].data, "unix:", 5) == 0) { #if (NGX_HAVE_UNIX_DOMAIN) ngx_memzero(&unix_upstream, sizeof(ngx_unix_domain_upstream_t)); unix_upstream.name = value[1]; unix_upstream.url = value[1]; lcf->peers = ngx_unix_upstream_parse(cf, &unix_upstream); if (lcf->peers == NULL) { return NGX_CONF_ERROR; } #else ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "the unix domain sockets are not supported " "on this platform"); return NGX_CONF_ERROR; #endif } else { ngx_memzero(&inet_upstream, sizeof(ngx_inet_upstream_t)); inet_upstream.name = value[1]; inet_upstream.url = value[1]; lcf->peers = ngx_inet_upstream_parse(cf, &inet_upstream); if (lcf->peers == NULL) { return NGX_CONF_ERROR; } } clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module); clcf->handler = ngx_http_fastcgi_handler; #if (NGX_PCRE) lcf->location = clcf->regex ? &ngx_http_fastcgi_uri : &clcf->name; #else lcf->location = &clcf->name; #endif if (clcf->name.data[clcf->name.len - 1] == '/') { clcf->auto_redirect = 1; } return NGX_CONF_OK; } static char * ngx_http_fastcgi_set_var(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) { ngx_http_fastcgi_loc_conf_t *lcf = conf; ngx_uint_t i, *index; ngx_str_t *value; ngx_http_variable_t *var; ngx_http_core_main_conf_t *cmcf; if (lcf->vars == NULL) { lcf->vars = ngx_array_create(cf->pool, 4, sizeof(ngx_http_variable_t *)); if (lcf->vars == NULL) { return NGX_CONF_ERROR; } } cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module); value = cf->args->elts; var = cmcf->variables.elts; for (i = 0; i < cmcf->variables.nelts; i++) { if (ngx_strcasecmp(var[i].name.data, value[1].data) == 0) { index = ngx_array_push(lcf->vars); if (index == NULL) { return NGX_CONF_ERROR; } *index = var[i].index; return NGX_CONF_OK; } } ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "unknown variable name \"%V\"", &value[1]); return NGX_CONF_ERROR; } static char * ngx_http_fastcgi_lowat_check(ngx_conf_t *cf, void *post, void *data) { #if (NGX_FREEBSD) ssize_t *np = data; if (*np >= ngx_freebsd_net_inet_tcp_sendspace) { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "\"fastcgi_send_lowat\" must be less than %d " "(sysctl net.inet.tcp.sendspace)", ngx_freebsd_net_inet_tcp_sendspace); return NGX_CONF_ERROR; } #elif !(NGX_HAVE_SO_SNDLOWAT) ssize_t *np = data; ngx_conf_log_error(NGX_LOG_WARN, cf, 0, "\"fastcgi_send_lowat\" is not supported, ignored"); *np = 0; #endif return NGX_CONF_OK; } static void * ngx_http_fastcgi_create_loc_conf(ngx_conf_t *cf) { ngx_http_fastcgi_loc_conf_t *conf; conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_fastcgi_loc_conf_t)); if (conf == NULL) { return NGX_CONF_ERROR; } /* * set by ngx_pcalloc(): * * conf->upstream.bufs.num = 0; * conf->upstream.path = NULL; * conf->upstream.next_upstream = 0; * conf->upstream.temp_path = NULL; * conf->params = 0; * conf->root.len = 0; * conf->root.data = NULL; * conf->index.len = 0; * conf->index.data = NULL; * conf->location = NULL; */ 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.send_lowat = NGX_CONF_UNSET_SIZE; conf->upstream.header_buffer_size = NGX_CONF_UNSET_SIZE; conf->upstream.busy_buffers_size = NGX_CONF_UNSET_SIZE; conf->upstream.max_temp_file_size = NGX_CONF_UNSET_SIZE; conf->upstream.temp_file_write_size = NGX_CONF_UNSET_SIZE; conf->upstream.redirect_errors = NGX_CONF_UNSET; conf->upstream.pass_unparsed_uri = NGX_CONF_UNSET; conf->upstream.x_powered_by = NGX_CONF_UNSET; /* "fastcgi_cyclic_temp_file" is disabled */ conf->upstream.cyclic_temp_file = 0; return conf; } static char * ngx_http_fastcgi_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child) { ngx_http_fastcgi_loc_conf_t *prev = parent; ngx_http_fastcgi_loc_conf_t *conf = child; size_t size; 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_size_value(conf->upstream.send_lowat, prev->upstream.send_lowat, 0); ngx_conf_merge_size_value(conf->upstream.header_buffer_size, prev->upstream.header_buffer_size, (size_t) ngx_pagesize); ngx_conf_merge_bufs_value(conf->upstream.bufs, prev->upstream.bufs, 8, ngx_pagesize); if (conf->upstream.bufs.num < 2) { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "there must be at least 2 \"fastcgi_buffers\""); return NGX_CONF_ERROR; } size = conf->upstream.header_buffer_size; if (size < conf->upstream.bufs.size) { size = conf->upstream.bufs.size; } ngx_conf_merge_size_value(conf->upstream.busy_buffers_size, prev->upstream.busy_buffers_size, NGX_CONF_UNSET_SIZE); if (conf->upstream.busy_buffers_size == NGX_CONF_UNSET_SIZE) { conf->upstream.busy_buffers_size = 2 * size; } else if (conf->upstream.busy_buffers_size < size) { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "\"fastcgi_busy_buffers_size\" must be equal or bigger than " "maximum of the value of \"fastcgi_header_buffer_size\" and " "one of the \"fastcgi_buffers\""); return NGX_CONF_ERROR; } else if (conf->upstream.busy_buffers_size > (conf->upstream.bufs.num - 1) * conf->upstream.bufs.size) { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "\"fastcgi_busy_buffers_size\" must be less than " "the size of all \"fastcgi_buffers\" minus one buffer"); return NGX_CONF_ERROR; } ngx_conf_merge_size_value(conf->upstream.temp_file_write_size, prev->upstream.temp_file_write_size, NGX_CONF_UNSET_SIZE); if (conf->upstream.temp_file_write_size == NGX_CONF_UNSET_SIZE) { conf->upstream.temp_file_write_size = 2 * size; } else if (conf->upstream.temp_file_write_size < size) { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "\"fastcgi_temp_file_write_size\" must be equal or bigger than " "maximum of the value of \"fastcgi_header_buffer_size\" and " "one of the \"fastcgi_buffers\""); return NGX_CONF_ERROR; } ngx_conf_merge_size_value(conf->upstream.max_temp_file_size, prev->upstream.max_temp_file_size, NGX_CONF_UNSET_SIZE); if (conf->upstream.max_temp_file_size == NGX_CONF_UNSET_SIZE) { conf->upstream.max_temp_file_size = 1024 * 1024 * 1024; } else if (conf->upstream.max_temp_file_size != 0 && conf->upstream.max_temp_file_size < size) { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "\"fastcgi_max_temp_file_size\" must be equal to zero to disable " "the temporary files usage or must be equal or bigger than " "maximum of the value of \"fastcgi_header_buffer_size\" and " "one of the \"fastcgi_buffers\""); return NGX_CONF_ERROR; } 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)); ngx_conf_merge_path_value(conf->upstream.temp_path, prev->upstream.temp_path, NGX_HTTP_FASTCGI_TEMP_PATH, 1, 2, 0, ngx_garbage_collector_temp_handler, cf); ngx_conf_merge_msec_value(conf->upstream.redirect_errors, prev->upstream.redirect_errors, 0); ngx_conf_merge_msec_value(conf->upstream.pass_unparsed_uri, prev->upstream.pass_unparsed_uri, 0); if (conf->upstream.pass_unparsed_uri && conf->location->len > 1) { ngx_log_error(NGX_LOG_EMERG, cf->log, 0, "\"fastcgi_pass_unparsed_uri\" can be set for " "location \"/\" or given by regular expression."); return NGX_CONF_ERROR; } ngx_conf_merge_msec_value(conf->upstream.x_powered_by, prev->upstream.x_powered_by, 1); ngx_conf_merge_bitmask_value(conf->params, prev->params, (NGX_CONF_BITMASK_SET |NGX_HTTP_FASTCGI_REMOTE_ADDR |NGX_HTTP_FASTCGI_REMOTE_USER |NGX_HTTP_FASTCGI_SERVER_NAME |NGX_HTTP_FASTCGI_SERVER_PORT |NGX_HTTP_FASTCGI_SCRIPT_NAME |NGX_HTTP_FASTCGI_AUTH_TYPE |NGX_HTTP_FASTCGI_REQUEST_URI |NGX_HTTP_FASTCGI_REDIRECT_STATUS)); ngx_conf_merge_str_value(conf->root, prev->root, ""); if (conf->root.len && conf->root.data[conf->root.len - 1] == '/') { conf->root.len--; } ngx_conf_merge_str_value(conf->index, prev->index, ""); if (conf->vars == NULL) { conf->vars = prev->vars; } if (conf->peers == NULL) { conf->peers = prev->peers; conf->upstream = prev->upstream; } return NGX_CONF_OK; }