Mercurial > hg > nginx-quic
diff src/http/modules/ngx_http_scgi_module.c @ 3637:d656caa72ec9
ngx_http_scgi_module
author | Igor Sysoev <igor@sysoev.ru> |
---|---|
date | Fri, 18 Jun 2010 15:51:14 +0000 |
parents | |
children | 12bd9e26fadb |
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new file mode 100644 --- /dev/null +++ b/src/http/modules/ngx_http_scgi_module.c @@ -0,0 +1,1674 @@ + +/* + * Copyright (C) Igor Sysoev + * Copyright (C) Manlio Perillo (manlio.perillo@gmail.com) + */ + + +#include <ngx_config.h> +#include <ngx_core.h> +#include <ngx_http.h> + + +typedef struct { + ngx_http_upstream_conf_t upstream; + + ngx_array_t *flushes; + ngx_array_t *params_len; + ngx_array_t *params; + ngx_array_t *params_source; + + ngx_hash_t headers_hash; + ngx_uint_t header_params; + + ngx_array_t *scgi_lengths; + ngx_array_t *scgi_values; + +#if (NGX_HTTP_CACHE) + ngx_http_complex_value_t cache_key; +#endif +} ngx_http_scgi_loc_conf_t; + + +static ngx_int_t ngx_http_scgi_eval(ngx_http_request_t *r, + ngx_http_scgi_loc_conf_t *scf); +static ngx_int_t ngx_http_scgi_create_request(ngx_http_request_t *r); +static ngx_int_t ngx_http_scgi_reinit_request(ngx_http_request_t *r); +static ngx_int_t ngx_http_scgi_process_status_line(ngx_http_request_t *r); +static ngx_int_t ngx_http_scgi_process_header(ngx_http_request_t *r); +static ngx_int_t ngx_http_scgi_process_header(ngx_http_request_t *r); +static void ngx_http_scgi_abort_request(ngx_http_request_t *r); +static void ngx_http_scgi_finalize_request(ngx_http_request_t *r, ngx_int_t rc); + +static void *ngx_http_scgi_create_loc_conf(ngx_conf_t *cf); +static char *ngx_http_scgi_merge_loc_conf(ngx_conf_t *cf, void *parent, + void *child); + +static char *ngx_http_scgi_pass(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); +static char *ngx_http_scgi_store(ngx_conf_t *cf, ngx_command_t *cmd, + void *conf); + +#if (NGX_HTTP_CACHE) +static ngx_int_t ngx_http_scgi_create_key(ngx_http_request_t *r); +static char *ngx_http_scgi_cache(ngx_conf_t *cf, ngx_command_t *cmd, + void *conf); +static char *ngx_http_scgi_cache_key(ngx_conf_t *cf, ngx_command_t *cmd, + void *conf); +#endif + + +static ngx_conf_bitmask_t ngx_http_scgi_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_503"), NGX_HTTP_UPSTREAM_FT_HTTP_503 }, + { ngx_string("http_404"), NGX_HTTP_UPSTREAM_FT_HTTP_404 }, + { ngx_string("updating"), NGX_HTTP_UPSTREAM_FT_UPDATING }, + { ngx_string("off"), NGX_HTTP_UPSTREAM_FT_OFF }, + { ngx_null_string, 0 } +}; + + +static ngx_conf_bitmask_t ngx_http_scgi_ignore_headers_masks[] = { + { ngx_string("X-Accel-Redirect"), NGX_HTTP_UPSTREAM_IGN_XA_REDIRECT }, + { ngx_string("X-Accel-Expires"), NGX_HTTP_UPSTREAM_IGN_XA_EXPIRES }, + { ngx_string("Expires"), NGX_HTTP_UPSTREAM_IGN_EXPIRES }, + { ngx_string("Cache-Control"), NGX_HTTP_UPSTREAM_IGN_CACHE_CONTROL }, + { ngx_null_string, 0 } +}; + + +ngx_module_t ngx_http_scgi_module; + + +static ngx_command_t ngx_http_scgi_commands[] = { + + { ngx_string("scgi_pass"), + NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF|NGX_CONF_TAKE1, + ngx_http_scgi_pass, + NGX_HTTP_LOC_CONF_OFFSET, + 0, + NULL }, + + { ngx_string("scgi_store"), + NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, + ngx_http_scgi_store, + NGX_HTTP_LOC_CONF_OFFSET, + 0, + NULL }, + + { ngx_string("scgi_store_access"), + NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE123, + ngx_conf_set_access_slot, + NGX_HTTP_LOC_CONF_OFFSET, + offsetof(ngx_http_scgi_loc_conf_t, upstream.store_access), + NULL }, + + { ngx_string("scgi_ignore_client_abort"), + 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_scgi_loc_conf_t, upstream.ignore_client_abort), + NULL }, + + { ngx_string("scgi_bind"), + NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, + ngx_http_upstream_bind_set_slot, + NGX_HTTP_LOC_CONF_OFFSET, + offsetof(ngx_http_scgi_loc_conf_t, upstream.local), + NULL }, + + { ngx_string("scgi_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_scgi_loc_conf_t, upstream.connect_timeout), + NULL }, + + { ngx_string("scgi_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_scgi_loc_conf_t, upstream.send_timeout), + NULL }, + + { ngx_string("scgi_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_scgi_loc_conf_t, upstream.buffer_size), + NULL }, + + { ngx_string("scgi_pass_request_headers"), + 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_scgi_loc_conf_t, upstream.pass_request_headers), + NULL }, + + { ngx_string("scgi_pass_request_body"), + 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_scgi_loc_conf_t, upstream.pass_request_body), + NULL }, + + { ngx_string("scgi_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_scgi_loc_conf_t, upstream.intercept_errors), + NULL }, + + { ngx_string("scgi_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_scgi_loc_conf_t, upstream.read_timeout), + NULL }, + + { ngx_string("scgi_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_scgi_loc_conf_t, upstream.bufs), + NULL }, + + { ngx_string("scgi_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_scgi_loc_conf_t, upstream.busy_buffers_size_conf), + NULL }, + +#if (NGX_HTTP_CACHE) + + { ngx_string("scgi_cache"), + NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG, + ngx_http_scgi_cache, + NGX_HTTP_LOC_CONF_OFFSET, + 0, + NULL }, + + { ngx_string("scgi_cache_key"), + NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG, + ngx_http_scgi_cache_key, + NGX_HTTP_LOC_CONF_OFFSET, + 0, + NULL }, + + { ngx_string("scgi_cache_path"), + NGX_HTTP_MAIN_CONF|NGX_CONF_2MORE, + ngx_http_file_cache_set_slot, + 0, + 0, + &ngx_http_scgi_module }, + + { ngx_string("scgi_no_cache"), + NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE, + ngx_http_no_cache_set_slot, + NGX_HTTP_LOC_CONF_OFFSET, + offsetof(ngx_http_scgi_loc_conf_t, upstream.no_cache), + NULL }, + + { ngx_string("scgi_cache_valid"), + NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE, + ngx_http_file_cache_valid_set_slot, + NGX_HTTP_LOC_CONF_OFFSET, + offsetof(ngx_http_scgi_loc_conf_t, upstream.cache_valid), + NULL }, + + { ngx_string("scgi_cache_min_uses"), + 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_scgi_loc_conf_t, upstream.cache_min_uses), + NULL }, + + { ngx_string("scgi_cache_use_stale"), + 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_scgi_loc_conf_t, upstream.cache_use_stale), + &ngx_http_scgi_next_upstream_masks }, + + { ngx_string("scgi_cache_methods"), + 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_scgi_loc_conf_t, upstream.cache_methods), + &ngx_http_upstream_cache_method_mask }, + +#endif + + { ngx_string("scgi_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_scgi_loc_conf_t, upstream.temp_path), + NULL }, + + { ngx_string("scgi_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_scgi_loc_conf_t, upstream.max_temp_file_size_conf), + NULL }, + + { ngx_string("scgi_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_scgi_loc_conf_t, upstream.temp_file_write_size_conf), + NULL }, + + { ngx_string("scgi_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_scgi_loc_conf_t, upstream.next_upstream), + &ngx_http_scgi_next_upstream_masks }, + + { ngx_string("scgi_param"), + 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_scgi_loc_conf_t, params_source), + NULL }, + + { ngx_string("scgi_pass_header"), + NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG, + ngx_conf_set_str_array_slot, + NGX_HTTP_LOC_CONF_OFFSET, + offsetof(ngx_http_scgi_loc_conf_t, upstream.pass_headers), + NULL }, + + { ngx_string("scgi_hide_header"), + NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG, + ngx_conf_set_str_array_slot, + NGX_HTTP_LOC_CONF_OFFSET, + offsetof(ngx_http_scgi_loc_conf_t, upstream.hide_headers), + NULL }, + + { ngx_string("scgi_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_scgi_loc_conf_t, upstream.ignore_headers), + &ngx_http_scgi_ignore_headers_masks }, + + ngx_null_command +}; + + +static ngx_http_module_t ngx_http_scgi_module_ctx = { + NULL, /* preconfiguration */ + NULL, /* postconfiguration */ + + NULL, /* create main configuration */ + NULL, /* init main configuration */ + + NULL, /* create server configuration */ + NULL, /* merge server configuration */ + + ngx_http_scgi_create_loc_conf, /* create location configuration */ + ngx_http_scgi_merge_loc_conf /* merge location configuration */ +}; + + +ngx_module_t ngx_http_scgi_module = { + NGX_MODULE_V1, + &ngx_http_scgi_module_ctx, /* module context */ + ngx_http_scgi_commands, /* module directives */ + NGX_HTTP_MODULE, /* module type */ + NULL, /* init master */ + NULL, /* init module */ + NULL, /* init process */ + NULL, /* init thread */ + NULL, /* exit thread */ + NULL, /* exit process */ + NULL, /* exit master */ + NGX_MODULE_V1_PADDING +}; + + +static ngx_str_t ngx_http_scgi_hide_headers[] = { + ngx_string("Status"), + 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 +}; + + +#if (NGX_HTTP_CACHE) + +static ngx_str_t ngx_http_scgi_hide_cache_headers[] = { + ngx_string("Status"), + 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_string("Set-Cookie"), + ngx_string("P3P"), + ngx_null_string +}; + + +static ngx_keyval_t ngx_http_scgi_cache_headers[] = { + { ngx_string("HTTP_IF_MODIFIED_SINCE"), ngx_string("") }, + { ngx_string("HTTP_IF_UNMODIFIED_SINCE"), ngx_string("") }, + { ngx_string("HTTP_IF_NONE_MATCH"), ngx_string("") }, + { ngx_string("HTTP_IF_MATCH"), ngx_string("") }, + { ngx_string("HTTP_RANGE"), ngx_string("") }, + { ngx_string("HTTP_IF_RANGE"), ngx_string("") }, + { ngx_null_string, ngx_null_string } +}; + +#endif + + +static ngx_path_init_t ngx_http_scgi_temp_path = { + ngx_string(NGX_HTTP_SCGI_TEMP_PATH), { 1, 2, 0 } +}; + + +static ngx_int_t +ngx_http_scgi_handler(ngx_http_request_t *r) +{ + ngx_int_t rc; + ngx_http_status_t *status; + ngx_http_upstream_t *u; + ngx_http_scgi_loc_conf_t *scf; + + if (r->subrequest_in_memory) { + ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0, + "ngx_http_scgi_module does not support " + "subrequests in memory"); + return NGX_HTTP_INTERNAL_SERVER_ERROR; + } + + if (ngx_http_upstream_create(r) != NGX_OK) { + return NGX_HTTP_INTERNAL_SERVER_ERROR; + } + + status = ngx_pcalloc(r->pool, sizeof(ngx_http_status_t)); + if (status == NULL) { + return NGX_HTTP_INTERNAL_SERVER_ERROR; + } + + ngx_http_set_ctx(r, status, ngx_http_scgi_module); + + scf = ngx_http_get_module_loc_conf(r, ngx_http_scgi_module); + + if (scf->scgi_lengths) { + if (ngx_http_scgi_eval(r, scf) != NGX_OK) { + return NGX_HTTP_INTERNAL_SERVER_ERROR; + } + } + + u = r->upstream; + + ngx_str_set(&u->schema, "scgi://"); + u->output.tag = (ngx_buf_tag_t) &ngx_http_scgi_module; + + u->conf = &scf->upstream; + +#if (NGX_HTTP_CACHE) + u->create_key = ngx_http_scgi_create_key; +#endif + u->create_request = ngx_http_scgi_create_request; + u->reinit_request = ngx_http_scgi_reinit_request; + u->process_header = ngx_http_scgi_process_status_line; + u->abort_request = ngx_http_scgi_abort_request; + u->finalize_request = ngx_http_scgi_finalize_request; + + u->buffering = 1; + + u->pipe = ngx_pcalloc(r->pool, sizeof(ngx_event_pipe_t)); + if (u->pipe == NULL) { + return NGX_HTTP_INTERNAL_SERVER_ERROR; + } + + u->pipe->input_filter = ngx_event_pipe_copy_input_filter; + u->pipe->input_ctx = r; + + 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_scgi_eval(ngx_http_request_t *r, ngx_http_scgi_loc_conf_t * scf) +{ + ngx_url_t url; + ngx_http_upstream_t *u; + + ngx_memzero(&url, sizeof(ngx_url_t)); + + if (ngx_http_script_run(r, &url.url, scf->scgi_lengths->elts, 0, + scf->scgi_values->elts) + == NULL) + { + return NGX_ERROR; + } + + 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; + } + + if (url.no_port) { + ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, + "no port in upstream \"%V\"", &url.url); + return NGX_ERROR; + } + + u = r->upstream; + + u->resolved = ngx_pcalloc(r->pool, sizeof(ngx_http_upstream_resolved_t)); + if (u->resolved == NULL) { + return NGX_ERROR; + } + + if (url.addrs && url.addrs[0].sockaddr) { + u->resolved->sockaddr = url.addrs[0].sockaddr; + u->resolved->socklen = url.addrs[0].socklen; + u->resolved->naddrs = 1; + u->resolved->host = url.addrs[0].name; + + } else { + u->resolved->host = url.host; + u->resolved->port = url.port; + } + + return NGX_OK; +} + + +#if (NGX_HTTP_CACHE) + +static ngx_int_t +ngx_http_scgi_create_key(ngx_http_request_t *r) +{ + ngx_str_t *key; + ngx_http_scgi_loc_conf_t *scf; + + key = ngx_array_push(&r->cache->keys); + if (key == NULL) { + return NGX_ERROR; + } + + scf = ngx_http_get_module_loc_conf(r, ngx_http_scgi_module); + + if (ngx_http_complex_value(r, &scf->cache_key, key) != NGX_OK) { + return NGX_ERROR; + } + + return NGX_OK; +} + +#endif + + +static ngx_int_t +ngx_http_scgi_create_request(ngx_http_request_t *r) +{ + u_char ch, *key, *val, *lowcase_key; + size_t len, allocated; + ngx_buf_t *b; + ngx_str_t *content_length; + ngx_uint_t i, n, hash, header_params; + ngx_chain_t *cl, *body; + ngx_list_part_t *part; + ngx_table_elt_t *header, **ignored; + ngx_http_script_code_pt code; + ngx_http_script_engine_t e, le; + ngx_http_scgi_loc_conf_t *scf; + ngx_http_script_len_code_pt lcode; + static ngx_str_t zero = ngx_string("0"); + + content_length = r->headers_in.content_length ? + &r->headers_in.content_length->value : &zero; + + len = sizeof("CONTENT_LENGTH") + content_length->len + 1; + + header_params = 0; + ignored = NULL; + + scf = ngx_http_get_module_loc_conf(r, ngx_http_scgi_module); + + if (scf->params_len) { + ngx_memzero(&le, sizeof(ngx_http_script_engine_t)); + + ngx_http_script_flush_no_cacheable_variables(r, scf->flushes); + le.flushed = 1; + + le.ip = scf->params_len->elts; + le.request = r; + + while (*(uintptr_t *) le.ip) { + + lcode = *(ngx_http_script_len_code_pt *) le.ip; + len += lcode(&le); + + while (*(uintptr_t *) le.ip) { + lcode = *(ngx_http_script_len_code_pt *) le.ip; + len += lcode(&le) + 1; + } + le.ip += sizeof(uintptr_t); + } + } + + if (scf->upstream.pass_request_headers) { + + allocated = 0; + lowcase_key = NULL; + + if (scf->header_params) { + ignored = ngx_palloc(r->pool, scf->header_params * sizeof(void *)); + if (ignored == NULL) { + return NGX_ERROR; + } + } + + 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; + } + + if (scf->header_params) { + if (allocated < header[i].key.len) { + allocated = header[i].key.len + 16; + lowcase_key = ngx_pnalloc(r->pool, allocated); + if (lowcase_key == NULL) { + return NGX_ERROR; + } + } + + hash = 0; + + 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 = '_'; + } + + hash = ngx_hash(hash, ch); + lowcase_key[n] = ch; + } + + if (ngx_hash_find(&scf->headers_hash, hash, lowcase_key, n)) { + ignored[header_params++] = &header[i]; + continue; + } + } + + len += sizeof("HTTP_") - 1 + header[i].key.len + 1 + + header[i].value.len + 1; + } + } + + /* netstring: "length:" + packet + "," */ + + b = ngx_create_temp_buf(r->pool, NGX_SIZE_T_LEN + 1 + len + 1); + if (b == NULL) { + return NGX_ERROR; + } + + cl = ngx_alloc_chain_link(r->pool); + if (cl == NULL) { + return NGX_ERROR; + } + + cl->buf = b; + + b->last = ngx_snprintf(b->last, + NGX_SIZE_T_LEN + 1 + sizeof("CONTENT_LENGTH") + + NGX_OFF_T_LEN + 1, + "%ui:CONTENT_LENGTH%Z%V%Z", + len, content_length); + + if (scf->params_len) { + ngx_memzero(&e, sizeof(ngx_http_script_engine_t)); + + e.ip = scf->params->elts; + e.pos = b->last; + e.request = r; + e.flushed = 1; + + while (*(uintptr_t *) e.ip) { + +#if (NGX_DEBUG) + key = e.pos; +#endif + code = *(ngx_http_script_code_pt *) e.ip; + code((ngx_http_script_engine_t *) & e); + +#if (NGX_DEBUG) + val = e.pos; +#endif + while (*(uintptr_t *) e.ip) { + code = *(ngx_http_script_code_pt *) e.ip; + code((ngx_http_script_engine_t *) &e); + } + *e.pos++ = '\0'; + e.ip += sizeof(uintptr_t); + + ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, + "scgi param: \"%s: %s\"", key, val); + } + + b->last = e.pos; + } + + if (scf->upstream.pass_request_headers) { + + 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; + } + + for (n = 0; n < header_params; n++) { + if (&header[i] == ignored[n]) { + goto next; + } + } + + key = b->last; + b->last = ngx_cpymem(key, "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++ = (u_char) 0; + + val = b->last; + b->last = ngx_copy(val, header[i].value.data, header[i].value.len); + *b->last++ = (u_char) 0; + + ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, + "scgi param: \"%s: %s\"", key, val); + + next: + + continue; + } + } + + *b->last++ = (u_char) ','; + + if (scf->upstream.pass_request_body) { + body = r->upstream->request_bufs; + r->upstream->request_bufs = cl; + + 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; + } + + } else { + r->upstream->request_bufs = cl; + } + + cl->next = NULL; + + return NGX_OK; +} + + +static ngx_int_t +ngx_http_scgi_reinit_request(ngx_http_request_t *r) +{ + ngx_http_status_t *status; + + status = ngx_http_get_module_ctx(r, ngx_http_scgi_module); + + if (status == NULL) { + return NGX_OK; + } + + status->code = 0; + status->count = 0; + status->start = NULL; + status->end = NULL; + + r->upstream->process_header = ngx_http_scgi_process_status_line; + + return NGX_OK; +} + + +static ngx_int_t +ngx_http_scgi_process_status_line(ngx_http_request_t *r) +{ + size_t len; + ngx_int_t rc; + ngx_http_status_t *status; + ngx_http_upstream_t *u; + + status = ngx_http_get_module_ctx(r, ngx_http_scgi_module); + + if (status == NULL) { + return NGX_ERROR; + } + + u = r->upstream; + + rc = ngx_http_parse_status_line(r, &u->buffer, status); + + if (rc == NGX_AGAIN) { + return rc; + } + + if (rc == NGX_ERROR) { + + r->http_version = NGX_HTTP_VERSION_9; + + u->process_header = ngx_http_scgi_process_header; + + return ngx_http_scgi_process_header(r); + } + + if (u->state) { + u->state->status = status->code; + } + + u->headers_in.status_n = status->code; + + len = status->end - status->start; + u->headers_in.status_line.len = len; + + u->headers_in.status_line.data = ngx_pnalloc(r->pool, len); + if (u->headers_in.status_line.data == NULL) { + return NGX_ERROR; + } + + ngx_memcpy(u->headers_in.status_line.data, status->start, len); + + ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, + "http scgi status %ui \"%V\"", + u->headers_in.status_n, &u->headers_in.status_line); + + u->process_header = ngx_http_scgi_process_header; + + return ngx_http_scgi_process_header(r); +} + + +static ngx_int_t +ngx_http_scgi_process_header(ngx_http_request_t *r) +{ + ngx_str_t *status_line; + ngx_int_t rc, status; + ngx_table_elt_t *h; + ngx_http_upstream_t *u; + ngx_http_upstream_header_t *hh; + ngx_http_upstream_main_conf_t *umcf; + + umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module); + + for ( ;; ) { + + rc = ngx_http_parse_header_line(r, &r->upstream->buffer, 1); + + if (rc == NGX_OK) { + + /* a header line has been parsed successfully */ + + h = ngx_list_push(&r->upstream->headers_in.headers); + if (h == NULL) { + return NGX_ERROR; + } + + h->hash = r->header_hash; + + h->key.len = r->header_name_end - r->header_name_start; + h->value.len = r->header_end - r->header_start; + + h->key.data = ngx_pnalloc(r->pool, + h->key.len + 1 + h->value.len + 1 + + h->key.len); + if (h->key.data == NULL) { + return NGX_ERROR; + } + + h->value.data = h->key.data + h->key.len + 1; + h->lowcase_key = h->key.data + h->key.len + 1 + h->value.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); + + if (h->key.len == r->lowcase_index) { + ngx_memcpy(h->lowcase_key, r->lowcase_header, h->key.len); + + } else { + ngx_strlow(h->lowcase_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 && hh->handler(r, h, hh->offset) != NGX_OK) { + return NGX_ERROR; + } + + ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, + "http scgi 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 scgi header done"); + + if (r->http_version > NGX_HTTP_VERSION_9) { + return NGX_OK; + } + + u = r->upstream; + + if (u->headers_in.status) { + status_line = &u->headers_in.status->value; + + 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; + } + + r->http_version = NGX_HTTP_VERSION_10; + u->headers_in.status_n = status; + u->headers_in.status_line = *status_line; + + } else if (u->headers_in.location) { + r->http_version = NGX_HTTP_VERSION_10; + u->headers_in.status_n = 302; + ngx_str_set(&u->headers_in.status_line, + "302 Moved Temporarily"); + + } else { + ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, + "upstream sent neither valid HTTP/1.0 header " + "nor \"Status\" header line"); + u->headers_in.status_n = 200; + ngx_str_set(&u->headers_in.status_line, "200 OK"); + } + + if (u->state) { + u->state->status = u->headers_in.status_n; + } + + return NGX_OK; + } + + if (rc == NGX_AGAIN) { + return NGX_AGAIN; + } + + /* there was error while a header line parsing */ + + ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, + "upstream sent invalid header"); + + return NGX_HTTP_UPSTREAM_INVALID_HEADER; + } +} + + +static void +ngx_http_scgi_abort_request(ngx_http_request_t *r) +{ + ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, + "abort http scgi request"); + + return; +} + + +static void +ngx_http_scgi_finalize_request(ngx_http_request_t *r, ngx_int_t rc) +{ + ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, + "finalize http scgi request"); + + return; +} + + +static void * +ngx_http_scgi_create_loc_conf(ngx_conf_t *cf) +{ + ngx_http_scgi_loc_conf_t *conf; + + conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_scgi_loc_conf_t)); + if (conf == NULL) { + return NULL; + } + + conf->upstream.store = NGX_CONF_UNSET; + conf->upstream.store_access = NGX_CONF_UNSET_UINT; + conf->upstream.buffering = NGX_CONF_UNSET; + conf->upstream.ignore_client_abort = NGX_CONF_UNSET; + + 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.buffer_size = NGX_CONF_UNSET_SIZE; + + conf->upstream.busy_buffers_size_conf = NGX_CONF_UNSET_SIZE; + conf->upstream.max_temp_file_size_conf = NGX_CONF_UNSET_SIZE; + conf->upstream.temp_file_write_size_conf = NGX_CONF_UNSET_SIZE; + + conf->upstream.pass_request_headers = NGX_CONF_UNSET; + conf->upstream.pass_request_body = NGX_CONF_UNSET; + +#if (NGX_HTTP_CACHE) + conf->upstream.cache = NGX_CONF_UNSET_PTR; + conf->upstream.cache_min_uses = NGX_CONF_UNSET_UINT; + conf->upstream.cache_valid = NGX_CONF_UNSET_PTR; +#endif + + conf->upstream.hide_headers = NGX_CONF_UNSET_PTR; + conf->upstream.pass_headers = NGX_CONF_UNSET_PTR; + + conf->upstream.intercept_errors = NGX_CONF_UNSET; + + /* "scgi_cyclic_temp_file" is disabled */ + conf->upstream.cyclic_temp_file = 0; + + return conf; +} + + +static char * +ngx_http_scgi_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child) +{ + ngx_http_scgi_loc_conf_t *prev = parent; + ngx_http_scgi_loc_conf_t *conf = child; + + u_char *p; + size_t size; + uintptr_t *code; + ngx_str_t *hide; + ngx_uint_t i; + ngx_array_t headers_names; + ngx_keyval_t *src; + ngx_hash_key_t *hk; + ngx_hash_init_t hash; + ngx_http_script_compile_t sc; + ngx_http_script_copy_code_t *copy; + + if (conf->upstream.store != 0) { + ngx_conf_merge_value(conf->upstream.store, prev->upstream.store, 0); + + if (conf->upstream.store_lengths == NULL) { + conf->upstream.store_lengths = prev->upstream.store_lengths; + conf->upstream.store_values = prev->upstream.store_values; + } + } + + ngx_conf_merge_uint_value(conf->upstream.store_access, + prev->upstream.store_access, 0600); + + ngx_conf_merge_value(conf->upstream.buffering, + prev->upstream.buffering, 1); + + ngx_conf_merge_value(conf->upstream.ignore_client_abort, + prev->upstream.ignore_client_abort, 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_size_value(conf->upstream.send_lowat, + prev->upstream.send_lowat, 0); + + ngx_conf_merge_size_value(conf->upstream.buffer_size, + prev->upstream.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 \"scgi_buffers\""); + return NGX_CONF_ERROR; + } + + + size = conf->upstream.buffer_size; + if (size < conf->upstream.bufs.size) { + size = conf->upstream.bufs.size; + } + + + ngx_conf_merge_size_value(conf->upstream.busy_buffers_size_conf, + prev->upstream.busy_buffers_size_conf, + NGX_CONF_UNSET_SIZE); + + if (conf->upstream.busy_buffers_size_conf == NGX_CONF_UNSET_SIZE) { + conf->upstream.busy_buffers_size = 2 * size; + } else { + conf->upstream.busy_buffers_size = + conf->upstream.busy_buffers_size_conf; + } + + if (conf->upstream.busy_buffers_size < size) { + ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, + "\"scgi_busy_buffers_size\" must be equal or bigger " + "than maximum of the value of \"scgi_buffer_size\" and " + "one of the \"scgi_buffers\""); + + return NGX_CONF_ERROR; + } + + if (conf->upstream.busy_buffers_size + > (conf->upstream.bufs.num - 1) * conf->upstream.bufs.size) + { + ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, + "\"scgi_busy_buffers_size\" must be less than " + "the size of all \"scgi_buffers\" minus one buffer"); + + return NGX_CONF_ERROR; + } + + + ngx_conf_merge_size_value(conf->upstream.temp_file_write_size_conf, + prev->upstream.temp_file_write_size_conf, + NGX_CONF_UNSET_SIZE); + + if (conf->upstream.temp_file_write_size_conf == NGX_CONF_UNSET_SIZE) { + conf->upstream.temp_file_write_size = 2 * size; + } else { + conf->upstream.temp_file_write_size = + conf->upstream.temp_file_write_size_conf; + } + + if (conf->upstream.temp_file_write_size < size) { + ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, + "\"scgi_temp_file_write_size\" must be equal or bigger than " + "maximum of the value of \"scgi_buffer_size\" and " + "one of the \"scgi_buffers\""); + + return NGX_CONF_ERROR; + } + + + ngx_conf_merge_size_value(conf->upstream.max_temp_file_size_conf, + prev->upstream.max_temp_file_size_conf, + NGX_CONF_UNSET_SIZE); + + if (conf->upstream.max_temp_file_size_conf == NGX_CONF_UNSET_SIZE) { + conf->upstream.max_temp_file_size = 1024 * 1024 * 1024; + } else { + conf->upstream.max_temp_file_size = + conf->upstream.max_temp_file_size_conf; + } + + if (conf->upstream.max_temp_file_size != 0 + && conf->upstream.max_temp_file_size < size) { + ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, + "\"scgi_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 \"scgi_buffer_size\" and " + "one of the \"scgi_buffers\""); + + return NGX_CONF_ERROR; + } + + + 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; + } + + if (ngx_conf_merge_path_value(cf, &conf->upstream.temp_path, + prev->upstream.temp_path, + &ngx_http_scgi_temp_path) + != NGX_OK) + { + return NGX_CONF_ERROR; + } + +#if (NGX_HTTP_CACHE) + + ngx_conf_merge_ptr_value(conf->upstream.cache, + prev->upstream.cache, NULL); + + if (conf->upstream.cache && conf->upstream.cache->data == NULL) { + ngx_shm_zone_t *shm_zone; + + shm_zone = conf->upstream.cache; + + ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, + "\"scgi_cache\" zone \"%V\" is unknown", + &shm_zone->shm.name); + + return NGX_CONF_ERROR; + } + + ngx_conf_merge_uint_value(conf->upstream.cache_min_uses, + prev->upstream.cache_min_uses, 1); + + ngx_conf_merge_bitmask_value(conf->upstream.cache_use_stale, + prev->upstream.cache_use_stale, + (NGX_CONF_BITMASK_SET + |NGX_HTTP_UPSTREAM_FT_OFF)); + + if (conf->upstream.cache_use_stale & NGX_HTTP_UPSTREAM_FT_OFF) { + conf->upstream.cache_use_stale = NGX_CONF_BITMASK_SET + |NGX_HTTP_UPSTREAM_FT_OFF; + } + + if (conf->upstream.cache_methods == 0) { + conf->upstream.cache_methods = prev->upstream.cache_methods; + } + + conf->upstream.cache_methods |= NGX_HTTP_GET|NGX_HTTP_HEAD; + + ngx_conf_merge_ptr_value(conf->upstream.no_cache, + prev->upstream.no_cache, NULL); + + ngx_conf_merge_ptr_value(conf->upstream.cache_valid, + prev->upstream.cache_valid, NULL); + + if (conf->cache_key.value.data == NULL) { + conf->cache_key = prev->cache_key; + } + +#endif + + ngx_conf_merge_value(conf->upstream.pass_request_headers, + prev->upstream.pass_request_headers, 1); + ngx_conf_merge_value(conf->upstream.pass_request_body, + prev->upstream.pass_request_body, 1); + + ngx_conf_merge_value(conf->upstream.intercept_errors, + prev->upstream.intercept_errors, 0); + + hash.max_size = 512; + hash.bucket_size = ngx_align(64, ngx_cacheline_size); + hash.name = "scgi_hide_headers_hash"; + +#if (NGX_HTTP_CACHE) + + hide = conf->upstream.cache ? ngx_http_scgi_hide_cache_headers: + ngx_http_scgi_hide_headers; +#else + + hide = ngx_http_scgi_hide_headers; + +#endif + + if (ngx_http_upstream_hide_headers_hash(cf, &conf->upstream, + &prev->upstream, hide, &hash) + != NGX_OK) + { + return NGX_CONF_ERROR; + } + + if (conf->upstream.upstream == NULL) { + conf->upstream.upstream = prev->upstream.upstream; + } + + if (conf->scgi_lengths == NULL) { + conf->scgi_lengths = prev->scgi_lengths; + conf->scgi_values = prev->scgi_values; + } + + if (conf->params_source == NULL) { + conf->flushes = prev->flushes; + conf->params_len = prev->params_len; + conf->params = prev->params; + conf->params_source = prev->params_source; + conf->headers_hash = prev->headers_hash; + +#if (NGX_HTTP_CACHE) + + if (conf->params_source == NULL) { + + if ((conf->upstream.cache == NULL) + == (prev->upstream.cache == NULL)) + { + return NGX_CONF_OK; + } + + /* 6 is a number of ngx_http_scgi_cache_headers entries */ + conf->params_source = ngx_array_create(cf->pool, 6, + sizeof(ngx_keyval_t)); + if (conf->params_source == NULL) { + return NGX_CONF_ERROR; + } + } +#else + + if (conf->params_source == NULL) { + return NGX_CONF_OK; + } + +#endif + } + + conf->params_len = ngx_array_create(cf->pool, 64, 1); + if (conf->params_len == NULL) { + return NGX_CONF_ERROR; + } + + conf->params = ngx_array_create(cf->pool, 512, 1); + if (conf->params == NULL) { + return NGX_CONF_ERROR; + } + + if (ngx_array_init(&headers_names, cf->temp_pool, 4, sizeof(ngx_hash_key_t)) + != NGX_OK) + { + return NGX_CONF_ERROR; + } + + src = conf->params_source->elts; + +#if (NGX_HTTP_CACHE) + + if (conf->upstream.cache) { + ngx_keyval_t *h, *s; + + for (h = ngx_http_scgi_cache_headers; h->key.len; h++) { + + for (i = 0; i < conf->params_source->nelts; i++) { + if (ngx_strcasecmp(h->key.data, src[i].key.data) == 0) { + goto next; + } + } + + s = ngx_array_push(conf->params_source); + if (s == NULL) { + return NGX_CONF_ERROR; + } + + *s = *h; + + src = conf->params_source->elts; + + next: + + h++; + } + } + +#endif + + for (i = 0; i < conf->params_source->nelts; i++) { + + if (src[i].key.len > sizeof("HTTP_") - 1 + && ngx_strncmp(src[i].key.data, "HTTP_", sizeof("HTTP_") - 1) == 0) + { + hk = ngx_array_push(&headers_names); + if (hk == NULL) { + return NGX_CONF_ERROR; + } + + hk->key.len = src[i].key.len - 5; + hk->key.data = src[i].key.data + 5; + hk->key_hash = ngx_hash_key_lc(hk->key.data, hk->key.len); + hk->value = (void *) 1; + + if (src[i].value.len == 0) { + continue; + } + } + + copy = ngx_array_push_n(conf->params_len, + sizeof(ngx_http_script_copy_code_t)); + if (copy == NULL) { + return NGX_CONF_ERROR; + } + + copy->code = (ngx_http_script_code_pt) ngx_http_script_copy_len_code; + copy->len = src[i].key.len + 1; + + + size = (sizeof(ngx_http_script_copy_code_t) + + src[i].key.len + 1 + sizeof(uintptr_t) - 1) + & ~(sizeof(uintptr_t) - 1); + + copy = ngx_array_push_n(conf->params, size); + if (copy == NULL) { + return NGX_CONF_ERROR; + } + + copy->code = ngx_http_script_copy_code; + copy->len = src[i].key.len + 1; + + p = (u_char *) copy + sizeof(ngx_http_script_copy_code_t); + (void) ngx_cpystrn(p, src[i].key.data, src[i].key.len + 1); + + + ngx_memzero(&sc, sizeof(ngx_http_script_compile_t)); + + sc.cf = cf; + sc.source = &src[i].value; + sc.flushes = &conf->flushes; + sc.lengths = &conf->params_len; + sc.values = &conf->params; + + if (ngx_http_script_compile(&sc) != NGX_OK) { + return NGX_CONF_ERROR; + } + + code = ngx_array_push_n(conf->params_len, sizeof(uintptr_t)); + if (code == NULL) { + return NGX_CONF_ERROR; + } + + *code = (uintptr_t) NULL; + + + code = ngx_array_push_n(conf->params, sizeof(uintptr_t)); + if (code == NULL) { + return NGX_CONF_ERROR; + } + + *code = (uintptr_t) NULL; + } + + code = ngx_array_push_n(conf->params_len, sizeof(uintptr_t)); + if (code == NULL) { + return NGX_CONF_ERROR; + } + + *code = (uintptr_t) NULL; + + code = ngx_array_push_n(conf->params, sizeof(uintptr_t)); + if (code == NULL) { + return NGX_CONF_ERROR; + } + + *code = (uintptr_t) NULL; + + conf->header_params = headers_names.nelts; + + hash.hash = &conf->headers_hash; + hash.key = ngx_hash_key_lc; + hash.max_size = 512; + hash.bucket_size = 64; + hash.name = "scgi_params_hash"; + hash.pool = cf->pool; + hash.temp_pool = NULL; + + if (ngx_hash_init(&hash, headers_names.elts, headers_names.nelts) != NGX_OK) + { + return NGX_CONF_ERROR; + } + + return NGX_CONF_OK; +} + + +static char * +ngx_http_scgi_pass(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) +{ + ngx_http_scgi_loc_conf_t *scf = conf; + + ngx_url_t u; + ngx_str_t *value, *url; + ngx_uint_t n; + ngx_http_core_loc_conf_t *clcf; + ngx_http_script_compile_t sc; + + if (scf->upstream.upstream || scf->scgi_lengths) { + return "is duplicate"; + } + + clcf = ngx_http_conf_get_module_loc_conf (cf, ngx_http_core_module); + clcf->handler = ngx_http_scgi_handler; + + 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 = &scf->scgi_lengths; + sc.values = &scf->scgi_values; + sc.variables = n; + sc.complete_lengths = 1; + sc.complete_values = 1; + + if (ngx_http_script_compile(&sc) != NGX_OK) { + return NGX_CONF_ERROR; + } + + return NGX_CONF_OK; + } + + ngx_memzero(&u, sizeof(ngx_url_t)); + + u.url = value[1]; + u.no_resolve = 1; + + scf->upstream.upstream = ngx_http_upstream_add(cf, &u, 0); + if (scf->upstream.upstream == NULL) { + return NGX_CONF_ERROR; + } + + if (clcf->name.data[clcf->name.len - 1] == '/') { + clcf->auto_redirect = 1; + } + + return NGX_CONF_OK; +} + + +static char * +ngx_http_scgi_store(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) +{ + ngx_http_scgi_loc_conf_t *scf = conf; + + ngx_str_t *value; + ngx_http_script_compile_t sc; + + if (scf->upstream.store != NGX_CONF_UNSET || scf->upstream.store_lengths) { + return "is duplicate"; + } + + value = cf->args->elts; + + if (ngx_strcmp(value[1].data, "off") == 0) { + scf->upstream.store = 0; + return NGX_CONF_OK; + } + +#if (NGX_HTTP_CACHE) + + if (scf->upstream.cache != NGX_CONF_UNSET_PTR + && scf->upstream.cache != NULL) + { + return "is incompatible with \"scgi_cache\""; + } + +#endif + + if (ngx_strcmp(value[1].data, "on") == 0) { + scf->upstream.store = 1; + return NGX_CONF_OK; + } + + /* include the terminating '\0' into script */ + value[1].len++; + + ngx_memzero(&sc, sizeof(ngx_http_script_compile_t)); + + sc.cf = cf; + sc.source = &value[1]; + sc.lengths = &scf->upstream.store_lengths; + sc.values = &scf->upstream.store_values; + sc.variables = ngx_http_script_variables_count(&value[1]);; + sc.complete_lengths = 1; + sc.complete_values = 1; + + if (ngx_http_script_compile(&sc) != NGX_OK) { + return NGX_CONF_ERROR; + } + + return NGX_CONF_OK; +} + + +#if (NGX_HTTP_CACHE) + +static char * +ngx_http_scgi_cache(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) +{ + ngx_http_scgi_loc_conf_t *scf = conf; + + ngx_str_t *value; + + value = cf->args->elts; + + if (scf->upstream.cache != NGX_CONF_UNSET_PTR) { + return "is duplicate"; + } + + if (ngx_strcmp(value[1].data, "off") == 0) { + scf->upstream.cache = NULL; + return NGX_CONF_OK; + } + + if (scf->upstream.store > 0 || scf->upstream.store_lengths) { + return "is incompatible with \"scgi_store\""; + } + + scf->upstream.cache = ngx_shared_memory_add(cf, &value[1], 0, + &ngx_http_scgi_module); + if (scf->upstream.cache == NULL) { + return NGX_CONF_ERROR; + } + + return NGX_CONF_OK; +} + + +static char * +ngx_http_scgi_cache_key(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) +{ + ngx_http_scgi_loc_conf_t *scf = conf; + + ngx_str_t *value; + ngx_http_compile_complex_value_t ccv; + + value = cf->args->elts; + + if (scf->cache_key.value.len) { + return "is duplicate"; + } + + ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t)); + + ccv.cf = cf; + ccv.value = &value[1]; + ccv.complex_value = &scf->cache_key; + + if (ngx_http_compile_complex_value(&ccv) != NGX_OK) { + return NGX_CONF_ERROR; + } + + return NGX_CONF_OK; +} + +#endif