Mercurial > hg > nginx
view src/http/modules/ngx_http_scgi_module.c @ 4437:3a1507f48686 stable-1.0
Merge of r4372, r4373, r4374:
SCGI fixes:
*) Fixed incorrect use of r->http_version in scgi module.
The r->http_version is a version of client's request, and modules
must not set it unless they are really willing to downgrade protocol
version used for a response (i.e. to HTTP/0.9 if no response headers
are available). In neither case r->http_version may be upgraded.
The former code downgraded response from HTTP/1.1 to HTTP/1.0 for no
reason, causing various problems (see ticket #66). It was also
possible that HTTP/0.9 requests were upgraded to HTTP/1.0.
*) Removed duplicate function declaration.
*) Removed error if there is no Status header.
The SCGI specification doesn't specify format of the response, and
assuming CGI specs should be used there is no reason to complain.
RFC 3875 explicitly states that "A Status header field is optional,
and status 200 'OK' is assumed if it is omitted".
| author | Maxim Dounin <mdounin@mdounin.ru> |
|---|---|
| date | Sun, 05 Feb 2012 13:53:50 +0000 |
| parents | 8e7bb000ba4a |
| children | 2b2d51cdbd97 |
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/* * 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 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 ngx_int_t ngx_http_scgi_merge_params(ngx_conf_t *cf, ngx_http_scgi_loc_conf_t *conf, ngx_http_scgi_loc_conf_t *prev); 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 } }; 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_buffering"), 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.buffering), 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_TAKE1, 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_TAKE1, 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_cache_bypass"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE, ngx_http_set_predicate_slot, NGX_HTTP_LOC_CONF_OFFSET, offsetof(ngx_http_scgi_loc_conf_t, upstream.cache_bypass), NULL }, { ngx_string("scgi_no_cache"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE, ngx_http_set_predicate_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_TAKE1, 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_TAKE1, 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_upstream_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_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 = scf->upstream.buffering; 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; } 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; u->resolved->no_port = url.no_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); } len++; le.ip += sizeof(uintptr_t); } } if (scf->upstream.pass_request_headers) { allocated = 0; lowcase_key = NULL; if (scf->header_params) { n = 0; part = &r->headers_in.headers.part; while (part) { n += part->nelts; part = part->next; } ignored = ngx_palloc(r->pool, n * 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) { 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"); u = r->upstream; if (u->headers_in.status_n) { return NGX_OK; } 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; } u->headers_in.status_n = status; u->headers_in.status_line = *status_line; } else if (u->headers_in.location) { u->headers_in.status_n = 302; ngx_str_set(&u->headers_in.status_line, "302 Moved Temporarily"); } else { 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_bypass = NGX_CONF_UNSET_PTR; conf->upstream.no_cache = NGX_CONF_UNSET_PTR; 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; conf->upstream.change_buffering = 1; ngx_str_set(&conf->upstream.module, "scgi"); 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; size_t size; ngx_hash_init_t hash; ngx_http_core_loc_conf_t *clcf; 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.cache_bypass, prev->upstream.cache_bypass, NULL); 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_upstream_hide_headers_hash(cf, &conf->upstream, &prev->upstream, ngx_http_scgi_hide_headers, &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->upstream.upstream || conf->scgi_lengths) { clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module); if (clcf->handler == NULL && clcf->lmt_excpt) { clcf->handler = ngx_http_scgi_handler; } } if (ngx_http_scgi_merge_params(cf, conf, prev) != NGX_OK) { return NGX_CONF_ERROR; } return NGX_CONF_OK; } static ngx_int_t ngx_http_scgi_merge_params(ngx_conf_t *cf, ngx_http_scgi_loc_conf_t *conf, ngx_http_scgi_loc_conf_t *prev) { u_char *p; size_t size; uintptr_t *code; ngx_uint_t i, nsrc; ngx_array_t headers_names; #if (NGX_HTTP_CACHE) ngx_array_t params_merged; #endif 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->params_source == NULL) { conf->params_source = prev->params_source; if (prev->headers_hash.buckets #if (NGX_HTTP_CACHE) && ((conf->upstream.cache == NULL) == (prev->upstream.cache == NULL)) #endif ) { conf->flushes = prev->flushes; conf->params_len = prev->params_len; conf->params = prev->params; conf->headers_hash = prev->headers_hash; conf->header_params = prev->header_params; return NGX_OK; } } if (conf->params_source == NULL #if (NGX_HTTP_CACHE) && (conf->upstream.cache == NULL) #endif ) { conf->headers_hash.buckets = (void *) 1; return NGX_OK; } conf->params_len = ngx_array_create(cf->pool, 64, 1); if (conf->params_len == NULL) { return NGX_ERROR; } conf->params = ngx_array_create(cf->pool, 512, 1); if (conf->params == NULL) { return NGX_ERROR; } if (ngx_array_init(&headers_names, cf->temp_pool, 4, sizeof(ngx_hash_key_t)) != NGX_OK) { return NGX_ERROR; } if (conf->params_source) { src = conf->params_source->elts; nsrc = conf->params_source->nelts; } else { src = NULL; nsrc = 0; } #if (NGX_HTTP_CACHE) if (conf->upstream.cache) { ngx_keyval_t *h, *s; if (ngx_array_init(¶ms_merged, cf->temp_pool, 4, sizeof(ngx_keyval_t)) != NGX_OK) { return NGX_ERROR; } for (i = 0; i < nsrc; i++) { s = ngx_array_push(¶ms_merged); if (s == NULL) { return NGX_ERROR; } *s = src[i]; } h = ngx_http_scgi_cache_headers; while (h->key.len) { src = params_merged.elts; nsrc = params_merged.nelts; for (i = 0; i < nsrc; i++) { if (ngx_strcasecmp(h->key.data, src[i].key.data) == 0) { goto next; } } s = ngx_array_push(¶ms_merged); if (s == NULL) { return NGX_ERROR; } *s = *h; next: h++; } src = params_merged.elts; nsrc = params_merged.nelts; } #endif for (i = 0; i < nsrc; 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_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_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_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_ERROR; } code = ngx_array_push_n(conf->params_len, sizeof(uintptr_t)); if (code == NULL) { return NGX_ERROR; } *code = (uintptr_t) NULL; code = ngx_array_push_n(conf->params, sizeof(uintptr_t)); if (code == NULL) { return NGX_ERROR; } *code = (uintptr_t) NULL; } code = ngx_array_push_n(conf->params_len, sizeof(uintptr_t)); if (code == NULL) { return NGX_ERROR; } *code = (uintptr_t) NULL; code = ngx_array_push_n(conf->params, sizeof(uintptr_t)); if (code == NULL) { return NGX_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; return ngx_hash_init(&hash, headers_names.elts, headers_names.nelts); } 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