/* * Copyright (C) 2007 Brice Figureau * shm_zone and rbtree code Copyright (c) 2002-2007 Igor Sysoev */ #include #include #include #define TIMER_FREQUENCY 15 * 1000 typedef enum { uploadprogress_state_starting = 0, uploadprogress_state_error = 1, uploadprogress_state_done = 2, uploadprogress_state_uploading = 3, uploadprogress_state_none } ngx_http_uploadprogress_state_t; typedef struct { ngx_str_t name; ngx_http_uploadprogress_state_t idx; } ngx_http_uploadprogress_state_map_t; typedef struct ngx_http_uploadprogress_node_s ngx_http_uploadprogress_node_t; struct ngx_http_uploadprogress_node_s { ngx_rbtree_node_t node; ngx_uint_t err_status; off_t rest; off_t length; ngx_uint_t done; time_t timeout; struct ngx_http_uploadprogress_node_s *prev; struct ngx_http_uploadprogress_node_s *next; u_char len; u_char data[1]; }; typedef struct { ngx_shm_zone_t *shm_zone; ngx_rbtree_node_t *node; ngx_http_request_t *r; time_t timeout; } ngx_http_uploadprogress_cleanup_t; typedef struct { ngx_rbtree_t *rbtree; ngx_http_uploadprogress_node_t list_head; ngx_http_uploadprogress_node_t list_tail; } ngx_http_uploadprogress_ctx_t; typedef struct { ngx_array_t *values; ngx_array_t *lengths; } ngx_http_uploadprogress_template_t; typedef struct { ngx_shm_zone_t *shm_zone; time_t timeout; ngx_event_t cleanup; ngx_http_handler_pt handler; u_char track; ngx_str_t content_type; ngx_array_t templates; ngx_str_t header; ngx_str_t jsonp_parameter; } ngx_http_uploadprogress_conf_t; typedef struct { ngx_http_event_handler_pt read_event_handler; } ngx_http_uploadprogress_module_ctx_t; static ngx_int_t ngx_http_reportuploads_handler(ngx_http_request_t *r); static void ngx_http_uploadprogress_cleanup(void *data); static char *ngx_http_report_uploads(ngx_conf_t * cf, ngx_command_t * cmd, void *conf); static ngx_int_t ngx_http_uploadprogress_init_zone(ngx_shm_zone_t * shm_zone, void *data); static ngx_int_t ngx_http_uploadprogress_init(ngx_conf_t * cf); static void *ngx_http_uploadprogress_create_loc_conf(ngx_conf_t *cf); static char *ngx_http_uploadprogress_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child); static ngx_int_t ngx_http_uploadprogress_init_variables_and_templates(ngx_conf_t *cf); static ngx_int_t ngx_http_uploadprogress_received_variable(ngx_http_request_t *r, ngx_http_variable_value_t *v, uintptr_t data); static ngx_int_t ngx_http_uploadprogress_offset_variable(ngx_http_request_t *r, ngx_http_variable_value_t *v, uintptr_t data); static ngx_int_t ngx_http_uploadprogress_status_variable(ngx_http_request_t *r, ngx_http_variable_value_t *v, uintptr_t data); static ngx_int_t ngx_http_uploadprogress_callback_variable(ngx_http_request_t *r, ngx_http_variable_value_t *v, uintptr_t data); static char* ngx_http_upload_progress_set_template(ngx_conf_t * cf, ngx_http_uploadprogress_template_t *t, ngx_str_t *source); static char *ngx_http_track_uploads(ngx_conf_t * cf, ngx_command_t * cmd, void *conf); static char *ngx_http_report_uploads(ngx_conf_t * cf, ngx_command_t * cmd, void *conf); static char *ngx_http_upload_progress(ngx_conf_t * cf, ngx_command_t * cmd, void *conf); static char* ngx_http_upload_progress_template(ngx_conf_t * cf, ngx_command_t * cmd, void *conf); static char* ngx_http_upload_progress_java_output(ngx_conf_t * cf, ngx_command_t * cmd, void *conf); static char* ngx_http_upload_progress_json_output(ngx_conf_t * cf, ngx_command_t * cmd, void *conf); static char* ngx_http_upload_progress_jsonp_output(ngx_conf_t * cf, ngx_command_t * cmd, void *conf); static void ngx_clean_old_connections(ngx_event_t * ev); static ngx_int_t ngx_http_uploadprogress_content_handler(ngx_http_request_t *r); static ngx_http_output_header_filter_pt ngx_http_next_header_filter; static ngx_command_t ngx_http_uploadprogress_commands[] = { {ngx_string("upload_progress"), NGX_HTTP_MAIN_CONF | NGX_CONF_TAKE2, ngx_http_upload_progress, 0, 0, NULL}, {ngx_string("track_uploads"), NGX_HTTP_MAIN_CONF | NGX_HTTP_SRV_CONF | NGX_HTTP_LOC_CONF | NGX_CONF_TAKE2, ngx_http_track_uploads, NGX_HTTP_LOC_CONF_OFFSET, 0, NULL}, {ngx_string("report_uploads"), NGX_HTTP_MAIN_CONF | NGX_HTTP_SRV_CONF | NGX_HTTP_LOC_CONF | NGX_CONF_TAKE1, ngx_http_report_uploads, NGX_HTTP_LOC_CONF_OFFSET, 0, NULL}, {ngx_string("upload_progress_content_type"), 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_uploadprogress_conf_t, content_type), NULL}, {ngx_string("upload_progress_template"), NGX_HTTP_MAIN_CONF | NGX_HTTP_SRV_CONF | NGX_HTTP_LOC_CONF | NGX_CONF_TAKE2, ngx_http_upload_progress_template, NGX_HTTP_LOC_CONF_OFFSET, offsetof(ngx_http_uploadprogress_conf_t, templates), NULL}, {ngx_string("upload_progress_java_output"), NGX_HTTP_MAIN_CONF | NGX_HTTP_SRV_CONF | NGX_HTTP_LOC_CONF | NGX_CONF_NOARGS, ngx_http_upload_progress_java_output, NGX_HTTP_LOC_CONF_OFFSET, 0, NULL}, {ngx_string("upload_progress_json_output"), NGX_HTTP_MAIN_CONF | NGX_HTTP_SRV_CONF | NGX_HTTP_LOC_CONF | NGX_CONF_NOARGS, ngx_http_upload_progress_json_output, NGX_HTTP_LOC_CONF_OFFSET, 0, NULL}, {ngx_string("upload_progress_jsonp_output"), NGX_HTTP_MAIN_CONF | NGX_HTTP_SRV_CONF | NGX_HTTP_LOC_CONF | NGX_CONF_NOARGS, ngx_http_upload_progress_jsonp_output, NGX_HTTP_LOC_CONF_OFFSET, 0, NULL}, {ngx_string("upload_progress_header"), 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_uploadprogress_conf_t, header), NULL}, {ngx_string("upload_progress_jsonp_parameter"), 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_uploadprogress_conf_t, jsonp_parameter), NULL}, ngx_null_command }; static ngx_http_variable_t ngx_http_uploadprogress_variables[] = { { ngx_string("uploadprogress_received"), NULL, ngx_http_uploadprogress_received_variable, (uintptr_t) offsetof(ngx_http_uploadprogress_node_t, rest), NGX_HTTP_VAR_CHANGEABLE|NGX_HTTP_VAR_NOCACHEABLE|NGX_HTTP_VAR_NOHASH, 0 }, { ngx_string("uploadprogress_remaining"), NULL, ngx_http_uploadprogress_offset_variable, (uintptr_t) offsetof(ngx_http_uploadprogress_node_t, rest), NGX_HTTP_VAR_CHANGEABLE|NGX_HTTP_VAR_NOCACHEABLE|NGX_HTTP_VAR_NOHASH, 0 }, { ngx_string("uploadprogress_length"), NULL, ngx_http_uploadprogress_offset_variable, (uintptr_t) offsetof(ngx_http_uploadprogress_node_t, length), NGX_HTTP_VAR_CHANGEABLE|NGX_HTTP_VAR_NOCACHEABLE|NGX_HTTP_VAR_NOHASH, 0 }, { ngx_string("uploadprogress_status"), NULL, ngx_http_uploadprogress_status_variable, (uintptr_t) offsetof(ngx_http_uploadprogress_node_t, err_status), NGX_HTTP_VAR_CHANGEABLE|NGX_HTTP_VAR_NOCACHEABLE|NGX_HTTP_VAR_NOHASH, 0 }, { ngx_string("uploadprogress_callback"), NULL, ngx_http_uploadprogress_callback_variable, (uintptr_t) NULL, NGX_HTTP_VAR_CHANGEABLE|NGX_HTTP_VAR_NOCACHEABLE|NGX_HTTP_VAR_NOHASH, 0 }, { ngx_null_string, NULL, NULL, 0, 0, 0 } }; static ngx_http_module_t ngx_http_uploadprogress_module_ctx = { ngx_http_uploadprogress_init_variables_and_templates, /* preconfiguration */ ngx_http_uploadprogress_init, /* postconfiguration */ NULL, /* create main configuration */ NULL, /* init main configuration */ NULL, /* create server configuration */ NULL, /* merge server configuration */ ngx_http_uploadprogress_create_loc_conf, /* create location configuration */ ngx_http_uploadprogress_merge_loc_conf /* merge location configuration */ }; ngx_module_t ngx_http_uploadprogress_module = { NGX_MODULE_V1, &ngx_http_uploadprogress_module_ctx, /* module context */ ngx_http_uploadprogress_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_http_uploadprogress_state_map_t ngx_http_uploadprogress_state_map[] = { {ngx_string("starting"), uploadprogress_state_starting}, {ngx_string("error"), uploadprogress_state_error}, {ngx_string("done"), uploadprogress_state_done}, {ngx_string("uploading"), uploadprogress_state_uploading}, {ngx_null_string, uploadprogress_state_none}, }; static ngx_str_t ngx_http_uploadprogress_java_defaults[] = { ngx_string("new Object({ 'state' : 'starting' })\r\n"), ngx_string("new Object({ 'state' : 'error', 'status' : $uploadprogress_status })\r\n"), ngx_string("new Object({ 'state' : 'done' })\r\n"), ngx_string("new Object({ 'state' : 'uploading', 'received' : $uploadprogress_received, 'size' : $uploadprogress_length })\r\n") }; static ngx_str_t ngx_http_uploadprogress_json_defaults[] = { ngx_string("{ \"state\" : \"starting\" }\r\n"), ngx_string("{ \"state\" : \"error\", \"status\" : $uploadprogress_status }\r\n"), ngx_string("{ \"state\" : \"done\" }\r\n"), ngx_string("{ \"state\" : \"uploading\", \"received\" : $uploadprogress_received, \"size\" : $uploadprogress_length }\r\n") }; static ngx_str_t ngx_http_uploadprogress_jsonp_defaults[] = { ngx_string("$uploadprogress_callback({ \"state\" : \"starting\" });\r\n"), ngx_string("$uploadprogress_callback({ \"state\" : \"error\", \"status\" : $uploadprogress_status });\r\n"), ngx_string("$uploadprogress_callback({ \"state\" : \"done\" });\r\n"), ngx_string("$uploadprogress_callback({ \"state\" : \"uploading\", \"received\" : $uploadprogress_received, \"size\" : $uploadprogress_length });\r\n") }; static ngx_array_t ngx_http_uploadprogress_global_templates; static ngx_str_t* get_tracking_id(ngx_http_request_t * r) { u_char *p, *start_p; ngx_uint_t i; ngx_list_part_t *part; ngx_table_elt_t *header; ngx_str_t *ret, args; ngx_http_uploadprogress_conf_t *upcf; upcf = ngx_http_get_module_loc_conf(r, ngx_http_uploadprogress_module); ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "upload-progress: get_tracking_id"); 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 (header[i].key.len == upcf->header.len && ngx_strncasecmp(header[i].key.data, upcf->header.data, header[i].key.len) == 0) { ret = ngx_calloc(sizeof(ngx_str_t), r->connection->log ); ret->data = header[i].value.data; ret->len = header[i].value.len; ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "upload-progress: get_tracking_id found header: %V", ret); return ret; } } ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "upload-progress: get_tracking_id no header found"); /* not found, check as a request arg */ /* it is possible the request args have not been yet created (or already released) */ /* so let's try harder first from the request line */ args.len = r->args.len; args.data = r->args.data; if (args.len && args.data) { ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "upload-progress: get_tracking_id no header found, args found"); i = 0; p = args.data; do { ngx_uint_t len = args.len - (p - args.data); if (len >= (upcf->header.len + 1) && ngx_strncasecmp(p, upcf->header.data, upcf->header.len) == 0 && p[upcf->header.len] == '=') { ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "upload-progress: get_tracking_id found args: %s",p); i = 1; break; } if (len<=0) break; } while(p++); if (i) { start_p = p += upcf->header.len + 1; while (p < args.data + args.len) { if (*((p++) + 1) == '&') { break; } } ret = ngx_calloc(sizeof(ngx_str_t), r->connection->log); ret->data = start_p; ret->len = p - start_p; ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "upload-progress: get_tracking_id found args: %V",ret); return ret; } } ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "upload-progress: get_tracking_id no id found"); return NULL; } static ngx_http_uploadprogress_node_t * find_node(ngx_str_t * id, ngx_http_uploadprogress_ctx_t * ctx, ngx_log_t * log) { uint32_t hash; ngx_rbtree_node_t *node, *sentinel; ngx_int_t rc; ngx_http_uploadprogress_node_t *up; ngx_log_debug1(NGX_LOG_DEBUG_HTTP, log, 0, "upload-progress: find_node %V", id); hash = ngx_crc32_short(id->data, id->len); node = ctx->rbtree->root; sentinel = ctx->rbtree->sentinel; while (node != sentinel) { if (hash < node->key) { node = node->left; continue; } if (hash > node->key) { node = node->right; continue; } /* hash == node->key */ do { up = (ngx_http_uploadprogress_node_t *) node; rc = ngx_memn2cmp(id->data, up->data, id->len, (size_t) up->len); if (rc == 0) { ngx_log_debug0(NGX_LOG_DEBUG_HTTP, log, 0, "upload-progress: found node"); return up; } node = (rc < 0) ? node->left : node->right; } while (node != sentinel && hash == node->key); /* found a key with unmatching hash (and value), let's keep comparing hashes then */ } ngx_log_debug0(NGX_LOG_DEBUG_HTTP, log, 0, "upload-progress: can't find node"); return NULL; } static void ngx_http_uploadprogress_event_handler(ngx_http_request_t *r); static ngx_int_t ngx_http_uploadprogress_content_handler(ngx_http_request_t *r) { ngx_int_t rc; ngx_http_uploadprogress_module_ctx_t *ctx; ngx_http_uploadprogress_conf_t *upcf; ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "upload-progress: ngx_http_uploadprogress_content_handler"); upcf = ngx_http_get_module_loc_conf(r, ngx_http_uploadprogress_module); /* call the original request handler */ rc = upcf->handler(r); /* bail out if error */ if (rc >= NGX_HTTP_SPECIAL_RESPONSE) { return rc; } /* request is OK, hijack the read_event_handler if the request has to be tracked*/ ctx = ngx_http_get_module_ctx(r, ngx_http_uploadprogress_module); if (ctx != NULL) { ctx->read_event_handler = r->read_event_handler; r->read_event_handler = ngx_http_uploadprogress_event_handler; } return rc; } static ngx_str_t* ngx_http_uploadprogress_strdup(ngx_str_t *src, ngx_log_t * log) { ngx_str_t *dst; dst = ngx_alloc(src->len + sizeof(ngx_str_t), log); if (dst == NULL) { return NULL; } dst->len = src->len; ngx_memcpy(((char*)dst + sizeof(ngx_str_t)) , src->data, src->len); dst->data = ((u_char*)dst + sizeof(ngx_str_t)); return dst; } static void ngx_http_uploadprogress_strdupfree(ngx_str_t *str) { ngx_free(str); } static void ngx_http_uploadprogress_event_handler(ngx_http_request_t *r) { ngx_str_t *id, *oldid; ngx_slab_pool_t *shpool; ngx_shm_zone_t *shm_zone; ngx_http_uploadprogress_ctx_t *ctx; ngx_http_uploadprogress_node_t *up; ngx_http_uploadprogress_conf_t *upcf; ngx_http_uploadprogress_module_ctx_t *module_ctx; size_t size; off_t rest; ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "upload-progress: ngx_http_uploadprogress_event_handler"); /* find node, update rest */ oldid = id = get_tracking_id(r); if (id == NULL) { ngx_log_debug0(NGX_LOG_DEBUG_HTTP, ngx_cycle->log, 0, "upload-progress: read_event_handler cant find id"); return; } /* perform a deep copy of id */ id = ngx_http_uploadprogress_strdup(id, r->connection->log); ngx_free(oldid); ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "upload-progress: read_event_handler found id: %V", id); upcf = ngx_http_get_module_loc_conf(r, ngx_http_uploadprogress_module); shm_zone = upcf->shm_zone; /* call the original read event handler */ module_ctx = ngx_http_get_module_ctx(r, ngx_http_uploadprogress_module); if (module_ctx != NULL ) { module_ctx->read_event_handler(r); } /* at this stage, r is not anymore safe to use */ /* the request could have been closed/freed behind our back */ /* and thats the same issue with any other material that was allocated in the request pool */ /* that's why we duplicate id afterward */ /* it's also possible that the id was null if we got a spurious (like abort) read */ /* event. In this case we still have called the original read event handler */ /* but we have to bail out, because we won't ever be able to find our upload node */ if (shm_zone == NULL) { ngx_http_uploadprogress_strdupfree(id); ngx_log_debug1(NGX_LOG_DEBUG_HTTP, ngx_cycle->log, 0, "upload-progress: read_event_handler no shm_zone for id: %V", id); return; } ctx = shm_zone->data; /* get the original connection of the upload */ shpool = (ngx_slab_pool_t *) shm_zone->shm.addr; ngx_shmtx_lock(&shpool->mutex); up = find_node(id, ctx, ngx_cycle->log); if (up != NULL && !up->done) { ngx_log_debug1(NGX_LOG_DEBUG_HTTP, ngx_cycle->log, 0, "upload-progress: read_event_handler found node: %V", id); rest = r->request_body->rest; size = r->request_body->buf->last - r->request_body->buf->pos; if ((off_t) size < rest) { rest -= size; } else { rest = 0; } up->rest = rest; if(up->length == 0) up->length = r->headers_in.content_length_n; ngx_log_debug3(NGX_LOG_DEBUG_HTTP, ngx_cycle->log, 0, "upload-progress: read_event_handler storing rest %uO/%uO for %V", up->rest, up->length, id); } else { ngx_log_debug1(NGX_LOG_DEBUG_HTTP, ngx_cycle->log, 0, "upload-progress: read_event_handler not found: %V", id); } ngx_shmtx_unlock(&shpool->mutex); ngx_http_uploadprogress_strdupfree(id); } /* This generates the response for the report */ static ngx_int_t ngx_http_reportuploads_handler(ngx_http_request_t * r) { ngx_str_t *id, response; ngx_buf_t *b; ngx_chain_t out; ngx_int_t rc, found=0, done=0, err_status=0; off_t rest=0, length=0; ngx_uint_t len, i; ngx_slab_pool_t *shpool; ngx_http_uploadprogress_conf_t *upcf; ngx_http_uploadprogress_ctx_t *ctx; ngx_http_uploadprogress_node_t *up; ngx_table_elt_t *expires, *cc, **ccp; ngx_http_uploadprogress_state_t state; ngx_http_uploadprogress_template_t *t; if (r->method != NGX_HTTP_GET && r->method != NGX_HTTP_HEAD) { return NGX_HTTP_NOT_ALLOWED; } rc = ngx_http_discard_request_body(r); if (rc != NGX_OK) { return rc; } /* get the tracking id if any */ id = get_tracking_id(r); if (id == NULL) { ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "reportuploads handler cant find id"); return NGX_DECLINED; } ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "reportuploads handler found id: %V", id); upcf = ngx_http_get_module_loc_conf(r, ngx_http_uploadprogress_module); if (upcf->shm_zone == NULL) { ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "reportuploads no shm_zone for id: %V", id); ngx_free(id); return NGX_DECLINED; } ctx = upcf->shm_zone->data; /* get the original connection of the upload */ shpool = (ngx_slab_pool_t *) upcf->shm_zone->shm.addr; ngx_shmtx_lock(&shpool->mutex); up = find_node(id, ctx, r->connection->log); if (up != NULL) { ngx_log_debug5(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "reportuploads found node: %V (rest: %uO, length: %uO, done: %ui, err_status: %ui)", id, up->rest, up->length, up->done, up->err_status); rest = up->rest; length = up->length; done = up->done; err_status = up->err_status; found = 1; } else { ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "reportuploads not found: %V", id); } ngx_shmtx_unlock(&shpool->mutex); ngx_free(id); /* send the output */ r->headers_out.content_type = upcf->content_type; /* force no-cache */ expires = r->headers_out.expires; if (expires == NULL) { expires = ngx_list_push(&r->headers_out.headers); if (expires == NULL) { return NGX_HTTP_INTERNAL_SERVER_ERROR; } r->headers_out.expires = expires; expires->hash = 1; expires->key.len = sizeof("Expires") - 1; expires->key.data = (u_char *) "Expires"; } len = sizeof("Mon, 28 Sep 1970 06:00:00 GMT"); expires->value.len = len - 1; ccp = r->headers_out.cache_control.elts; if (ccp == NULL) { if (ngx_array_init(&r->headers_out.cache_control, r->pool, 1, sizeof(ngx_table_elt_t *)) != NGX_OK) { return NGX_HTTP_INTERNAL_SERVER_ERROR; } ccp = ngx_array_push(&r->headers_out.cache_control); if (ccp == NULL) { return NGX_HTTP_INTERNAL_SERVER_ERROR; } cc = ngx_list_push(&r->headers_out.headers); if (cc == NULL) { return NGX_HTTP_INTERNAL_SERVER_ERROR; } cc->hash = 1; cc->key.len = sizeof("Cache-Control") - 1; cc->key.data = (u_char *) "Cache-Control"; *ccp = cc; } else { for (i = 1; i < r->headers_out.cache_control.nelts; i++) { ccp[i]->hash = 0; } cc = ccp[0]; } expires->value.data = (u_char *) "Thu, 01 Jan 1970 00:00:01 GMT"; cc->value.len = sizeof("no-cache") - 1; cc->value.data = (u_char *) "no-cache"; if (r->method == NGX_HTTP_HEAD) { r->headers_out.status = NGX_HTTP_OK; rc = ngx_http_send_header(r); if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) { return rc; } } ngx_http_set_ctx(r, up, ngx_http_uploadprogress_module); /* There are 4 possibilities * request not yet started: found = false * request in error: err_status >= NGX_HTTP_BAD_REQUEST * request finished: done = true * request not yet started but registered: length==0 && rest ==0 * reauest in progress: rest > 0 */ if (!found) { state = uploadprogress_state_starting; } else if (err_status >= NGX_HTTP_BAD_REQUEST) { state = uploadprogress_state_error; } else if (done) { state = uploadprogress_state_done; } else if ( length == 0 && rest == 0 ) { state = uploadprogress_state_starting; } else { state = uploadprogress_state_uploading; } t = upcf->templates.elts; if (ngx_http_script_run(r, &response, t[(ngx_uint_t)state].lengths->elts, 0, t[(ngx_uint_t)state].values->elts) == NULL) { return NGX_HTTP_INTERNAL_SERVER_ERROR; } ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "upload progress: state=%d, err_status=%ui, remaining=%uO, length=%uO", state, err_status, (length - rest), length); b = ngx_calloc_buf(r->pool); if (b == NULL) { return NGX_HTTP_INTERNAL_SERVER_ERROR; } b->pos = b->start = response.data; b->last = b->end = response.data + response.len; b->temporary = 1; b->memory = 1; out.buf = b; out.next = NULL; r->headers_out.status = NGX_HTTP_OK; r->headers_out.content_length_n = b->last - b->pos; b->last_buf = 1; rc = ngx_http_send_header(r); if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) { return rc; } return ngx_http_output_filter(r, &out); } /* Let's register the upload connection in our connections rb-tree */ static ngx_int_t ngx_http_uploadprogress_handler(ngx_http_request_t * r) { size_t n; ngx_str_t *id; uint32_t hash; ngx_slab_pool_t *shpool; ngx_rbtree_node_t *node; ngx_http_uploadprogress_conf_t *upcf; ngx_http_uploadprogress_ctx_t *ctx; ngx_http_uploadprogress_node_t *up; ngx_http_uploadprogress_cleanup_t *upcln; ngx_pool_cleanup_t *cln; /* Is it a POST connection */ if (r->method != NGX_HTTP_POST) { return NGX_DECLINED; } id = get_tracking_id(r); if (id == NULL) { ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "trackuploads no id found in POST upload req"); return NGX_DECLINED; } ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "trackuploads id found: %V", id); upcf = ngx_http_get_module_loc_conf(r, ngx_http_uploadprogress_module); if (!upcf->track) { ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "trackuploads not tracking in this location for id: %V", id); ngx_free(id); return NGX_DECLINED; } if (upcf->shm_zone == NULL) { ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "trackuploads no shm_zone for id: %V", id); ngx_free(id); return NGX_DECLINED; } ctx = upcf->shm_zone->data; hash = ngx_crc32_short(id->data, id->len); ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "trackuploads hash %08XD for id: %V", hash, id); shpool = (ngx_slab_pool_t *) upcf->shm_zone->shm.addr; ngx_shmtx_lock(&shpool->mutex); if (find_node(id, ctx, r->connection->log) != NULL) { ngx_shmtx_unlock(&shpool->mutex); /* already found a node with matching progress ID */ ngx_log_error(NGX_LOG_INFO, r->connection->log, 0, "upload_progress: tracking already registered id: %V", id); ngx_free(id); return NGX_HTTP_INTERNAL_SERVER_ERROR; } cln = ngx_pool_cleanup_add(r->pool, sizeof(ngx_http_uploadprogress_cleanup_t)); if (cln == NULL) { ngx_shmtx_unlock(&shpool->mutex); ngx_free(id); return NGX_HTTP_INTERNAL_SERVER_ERROR; } n = sizeof(ngx_http_uploadprogress_node_t) + id->len; node = ngx_slab_alloc_locked(shpool, n); if (node == NULL) { ngx_shmtx_unlock(&shpool->mutex); ngx_free(id); return NGX_HTTP_SERVICE_UNAVAILABLE; } up = (ngx_http_uploadprogress_node_t *) node; node->key = hash; up->len = (u_char) id->len; up->err_status = r->err_status; up->done = 0; up->rest = 0; up->length = 0; up->timeout = 0; /* Properly handles small files where no read events happen after the */ /* request is first handled (apparently this can happen on linux with epoll) */ if (r->headers_in.content_length_n) { up->length = r->headers_in.content_length_n; if (r->request_body) { up->rest = r->request_body->rest; } } up->next = ctx->list_head.next; up->next->prev = up; up->prev = &ctx->list_head; ctx->list_head.next = up; ngx_memcpy(up->data, id->data, id->len); ngx_rbtree_insert(ctx->rbtree, node); ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "trackuploads: %08XD inserted in rbtree", node->key); if (!upcf->cleanup.timer_set) { upcf->cleanup.data = upcf->shm_zone; upcf->cleanup.handler = ngx_clean_old_connections; upcf->cleanup.log = upcf->shm_zone->shm.log; ngx_add_timer(&upcf->cleanup, TIMER_FREQUENCY); } ngx_shmtx_unlock(&shpool->mutex); cln->handler = ngx_http_uploadprogress_cleanup; upcln = cln->data; upcln->shm_zone = upcf->shm_zone; upcln->node = node; upcln->timeout = upcf->timeout; upcln->r = r; ngx_free(id); ctx = ngx_pcalloc(r->pool, sizeof(ngx_http_uploadprogress_module_ctx_t)); if (ctx == NULL) { return NGX_ERROR; } ngx_http_set_ctx(r, ctx, ngx_http_uploadprogress_module); /* finally says to the core we don't handle anything */ return NGX_DECLINED; } static void ngx_http_uploadprogress_rbtree_insert_value(ngx_rbtree_node_t * temp, ngx_rbtree_node_t * node, ngx_rbtree_node_t * sentinel) { ngx_http_uploadprogress_node_t *upn, *upnt; for (;;) { if (node->key < temp->key) { if (temp->left == sentinel) { temp->left = node; break; } temp = temp->left; } else if (node->key > temp->key) { if (temp->right == sentinel) { temp->right = node; break; } temp = temp->right; } else { /* node->key == temp->key */ upn = (ngx_http_uploadprogress_node_t *) node; upnt = (ngx_http_uploadprogress_node_t *) temp; if (ngx_memn2cmp(upn->data, upnt->data, upn->len, upnt->len) < 0) { if (temp->left == sentinel) { temp->left = node; break; } temp = temp->left; } else { if (temp->right == sentinel) { temp->right = node; break; } temp = temp->right; } } } node->parent = temp; node->left = sentinel; node->right = sentinel; ngx_rbt_red(node); } static void ngx_clean_old_connections(ngx_event_t * ev) { ngx_shm_zone_t *shm_zone; ngx_http_uploadprogress_ctx_t *ctx; ngx_slab_pool_t *shpool; ngx_rbtree_node_t *node; ngx_http_uploadprogress_node_t *up, *upprev; time_t now = ngx_time(); int count = 0; /* scan the rbtree */ shm_zone = ev->data; ctx = shm_zone->data; shpool = (ngx_slab_pool_t *) shm_zone->shm.addr; ngx_log_debug1(NGX_LOG_DEBUG_HTTP, shm_zone->shm.log, 0, "uploadprogress clean old connections at %T", now); ngx_shmtx_lock(&shpool->mutex); node = (ngx_rbtree_node_t *) ctx->list_tail.prev; for (;;) { if (node == &ctx->list_head.node) { break; } up = (ngx_http_uploadprogress_node_t *) node; upprev = up->prev; ngx_log_debug3(NGX_LOG_DEBUG_HTTP, shm_zone->shm.log, 0, "uploadprogress clean: scanning %08XD (req done %ui) timeout at %T", node->key, up->done, up->timeout); if ( (up->done && up->timeout < now) || (ngx_quit || ngx_terminate || ngx_exiting) ) { up->next->prev = up->prev; up->prev->next = up->next; ngx_log_debug3(NGX_LOG_DEBUG_HTTP, shm_zone->shm.log, 0, "uploadprogress clean: removing %08XD (req %ui) ", node->key, up->done, up->timeout); ngx_rbtree_delete(ctx->rbtree, node); ngx_slab_free_locked(shpool, node); } else count++; node = (ngx_rbtree_node_t *) upprev; } ngx_log_debug3(NGX_LOG_DEBUG_HTTP, shm_zone->shm.log, 0, "uploadprogress clean old connections: quit: %ui term: %ui count: %ui", ngx_quit, ngx_terminate, count); /* don't reschedule timer if ngx_quit or ngx_terminate && nodes emtpy */ if ( count > 0 || !(ngx_quit || ngx_terminate || ngx_exiting)) { ngx_log_debug0(NGX_LOG_DEBUG_HTTP, shm_zone->shm.log, 0, "uploadprogress clean old connections restarting timer"); ngx_add_timer(ev, TIMER_FREQUENCY); /* trigger again in 60s */ } else if (ngx_quit || ngx_terminate || ngx_exiting) { ngx_log_debug0(NGX_LOG_DEBUG_HTTP, shm_zone->shm.log, 0, "uploadprogress clean old connections quitting , no more active connections: not restarting timer"); } ngx_shmtx_unlock(&shpool->mutex); } /* removes the expired node from the upload rbtree */ static void ngx_http_uploadprogress_cleanup(void *data) { ngx_http_uploadprogress_cleanup_t *upcln = data; ngx_slab_pool_t *shpool; ngx_rbtree_node_t *node; ngx_http_uploadprogress_node_t *up; ngx_http_request_t *r; ngx_log_debug0(NGX_LOG_DEBUG_HTTP, upcln->shm_zone->shm.log, 0, "uploadprogress cleanup called"); shpool = (ngx_slab_pool_t *) upcln->shm_zone->shm.addr; node = upcln->node; r = upcln->r; up = (ngx_http_uploadprogress_node_t *) node; ngx_shmtx_lock(&shpool->mutex); up->done = 1; /* mark the original request as done */ up->timeout = ngx_time() + upcln->timeout; /* keep tracking for 60s */ if (r != NULL ) { ngx_uint_t rc = r->err_status ? r->err_status : r->headers_out.status; if (rc >= NGX_HTTP_SPECIAL_RESPONSE) { up->err_status = rc; } } ngx_shmtx_unlock(&shpool->mutex); ngx_log_debug2(NGX_LOG_DEBUG_HTTP, upcln->shm_zone->shm.log, 0, "uploadprogress cleanup: connection %08XD to be deleted at %T", node->key, up->timeout); } static ngx_int_t ngx_http_uploadprogress_init_zone(ngx_shm_zone_t * shm_zone, void *data) { ngx_http_uploadprogress_ctx_t *octx = data; ngx_slab_pool_t *shpool; ngx_rbtree_node_t *sentinel; ngx_http_uploadprogress_ctx_t *ctx; ctx = shm_zone->data; if (octx) { ctx->rbtree = octx->rbtree; return NGX_OK; } shpool = (ngx_slab_pool_t *) shm_zone->shm.addr; ctx->rbtree = ngx_slab_alloc(shpool, sizeof(ngx_rbtree_t)); if (ctx->rbtree == NULL) { return NGX_ERROR; } sentinel = ngx_slab_alloc(shpool, sizeof(ngx_rbtree_node_t)); if (sentinel == NULL) { return NGX_ERROR; } ngx_rbtree_sentinel_init(sentinel); ctx->rbtree->root = sentinel; ctx->rbtree->sentinel = sentinel; ctx->rbtree->insert = ngx_http_uploadprogress_rbtree_insert_value; return NGX_OK; } static ngx_int_t ngx_http_uploadprogress_errortracker(ngx_http_request_t * r) { size_t n; ngx_str_t *id; ngx_slab_pool_t *shpool; ngx_rbtree_node_t *node; ngx_http_uploadprogress_ctx_t *ctx; ngx_http_uploadprogress_node_t *up; ngx_http_uploadprogress_conf_t *upcf; uint32_t hash; ngx_http_uploadprogress_cleanup_t *upcln; ngx_pool_cleanup_t *cln; ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "uploadprogress error-tracker error: %D", r->err_status); if (r->err_status >= NGX_HTTP_SPECIAL_RESPONSE) { upcf = ngx_http_get_module_loc_conf(r, ngx_http_uploadprogress_module); if (!upcf->track) { ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "uploadprogress error-tracker not tracking in this location"); goto finish; } id = get_tracking_id(r); if (id == NULL) { ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "trackuploads error-tracker no id found in POST upload req"); goto finish; } ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "trackuploads error-tracker id found: %V", id); if (upcf->shm_zone == NULL) { ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "trackuploads no shm_zone for id: %V", id); ngx_free(id); goto finish; } ctx = upcf->shm_zone->data; hash = ngx_crc32_short(id->data, id->len); ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "trackuploads error-tracking hash %08XD for id: %V", hash, id); shpool = (ngx_slab_pool_t *) upcf->shm_zone->shm.addr; ngx_shmtx_lock(&shpool->mutex); if ((up = find_node(id, ctx, r->connection->log)) != NULL) { ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "trackuploads error-tracking found node for id: %V", id); up->err_status = r->err_status; ngx_shmtx_unlock(&shpool->mutex); ngx_free(id); goto finish; } /* no lz found for this tracking id */ n = sizeof(ngx_http_uploadprogress_node_t) + id->len; cln = ngx_pool_cleanup_add(r->pool, sizeof(ngx_http_uploadprogress_cleanup_t)); if (cln == NULL) { ngx_shmtx_unlock(&shpool->mutex); ngx_free(id); goto finish; } node = ngx_slab_alloc_locked(shpool, n); if (node == NULL) { ngx_shmtx_unlock(&shpool->mutex); ngx_free(id); goto finish; } up = (ngx_http_uploadprogress_node_t *) node; node->key = hash; up->len = (u_char) id->len; up->err_status = r->err_status; up->done = 0; up->rest = 0; up->length = 0; up->timeout = 0; ngx_memcpy(up->data, id->data, id->len); up->next = ctx->list_head.next; up->next->prev = up; up->prev = &ctx->list_head; ctx->list_head.next = up; ngx_rbtree_insert(ctx->rbtree, node); /* start the timer if needed */ if (!upcf->cleanup.timer_set) { upcf->cleanup.data = upcf->shm_zone; upcf->cleanup.handler = ngx_clean_old_connections; upcf->cleanup.log = upcf->shm_zone->shm.log; ngx_add_timer(&upcf->cleanup, TIMER_FREQUENCY); } ngx_shmtx_unlock(&shpool->mutex); cln->handler = ngx_http_uploadprogress_cleanup; upcln = cln->data; upcln->shm_zone = upcf->shm_zone; upcln->node = node; upcln->timeout = upcf->timeout; upcln->r = r; ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "trackuploads error-tracking adding: %08XD", node->key); ngx_free(id); } finish: /* call the filter chain as usual */ return ngx_http_next_header_filter(r); } static ngx_int_t ngx_http_uploadprogress_init(ngx_conf_t * cf) { ngx_http_handler_pt *h; ngx_http_core_main_conf_t *cmcf; cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module); /* install the tracking handler */ h = ngx_array_push(&cmcf->phases[NGX_HTTP_REWRITE_PHASE].handlers); if (h == NULL) { return NGX_ERROR; } *h = ngx_http_uploadprogress_handler; /* we also need to track HTTP errors unfortunately, the above handler is not called in case of errors. we have to register a header output filter that will be called in any case to track those errors */ ngx_http_next_header_filter = ngx_http_top_header_filter; ngx_http_top_header_filter = ngx_http_uploadprogress_errortracker; return NGX_OK; } static void* ngx_http_uploadprogress_create_loc_conf(ngx_conf_t * cf) { ngx_http_uploadprogress_conf_t *conf; ngx_uint_t i; conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_uploadprogress_conf_t)); if (conf == NULL) { return NGX_CONF_ERROR; } if(ngx_array_init(&conf->templates, cf->pool, 4, sizeof(ngx_http_uploadprogress_template_t)) != NGX_OK) { return NGX_CONF_ERROR; } for(i = 0;i < conf->templates.nalloc; i++) { ngx_http_uploadprogress_template_t *elt = ngx_array_push(&conf->templates); if (elt == NULL) { return NGX_CONF_ERROR; } elt->values = NULL; elt->lengths = NULL; } return conf; } static char* ngx_http_uploadprogress_merge_loc_conf(ngx_conf_t * cf, void *parent, void *child) { ngx_http_uploadprogress_conf_t *prev = parent; ngx_http_uploadprogress_conf_t *conf = child; ngx_http_uploadprogress_template_t *t, *pt, *gt; ngx_uint_t i; if (conf->shm_zone == NULL) { conf->shm_zone = prev->shm_zone; conf->timeout = prev->timeout; conf->cleanup = prev->cleanup; conf->handler = prev->handler; conf->track = prev->track; } ngx_conf_merge_str_value(conf->content_type, prev->content_type, "text/javascript"); t = conf->templates.elts; pt = prev->templates.elts; gt = ngx_http_uploadprogress_global_templates.elts; for(i = 0;i < conf->templates.nelts; i++) { if(t[i].values == NULL) { if(pt[i].values == NULL && gt != NULL) { t[i].values = gt[i].values; t[i].lengths = gt[i].lengths; } else { t[i].values = pt[i].values; t[i].lengths = pt[i].lengths; } } } ngx_conf_merge_str_value(conf->header, prev->header, "X-Progress-ID"); ngx_conf_merge_str_value(conf->jsonp_parameter, prev->jsonp_parameter, "callback"); return NGX_CONF_OK; } static ngx_int_t ngx_http_uploadprogress_init_variables_and_templates(ngx_conf_t *cf) { ngx_http_variable_t *var, *v; ngx_http_uploadprogress_state_map_t *m; ngx_uint_t i; /* Add variables */ for (v = ngx_http_uploadprogress_variables; v->name.len; v++) { var = ngx_http_add_variable(cf, &v->name, v->flags); if (var == NULL) { return NGX_ERROR; } var->get_handler = v->get_handler; var->data = v->data; } /* Compile global templates (containing Javascript output) */ if(ngx_array_init(&ngx_http_uploadprogress_global_templates, cf->pool, 4, sizeof(ngx_http_uploadprogress_template_t)) != NGX_OK) { return NGX_ERROR; } m = ngx_http_uploadprogress_state_map; i = 0; while(m->name.data != NULL) { ngx_http_uploadprogress_template_t *elt = ngx_array_push(&ngx_http_uploadprogress_global_templates); ngx_http_script_variables_count(ngx_http_uploadprogress_jsonp_defaults + i); if (ngx_http_upload_progress_set_template(cf, elt, ngx_http_uploadprogress_jsonp_defaults + i) != NGX_CONF_OK) { return NGX_ERROR; } m++; i++; } return NGX_OK; } static char* ngx_http_upload_progress(ngx_conf_t * cf, ngx_command_t * cmd, void *conf) { ssize_t n; ngx_str_t *value; ngx_shm_zone_t *shm_zone; ngx_http_uploadprogress_ctx_t *ctx; value = cf->args->elts; ngx_log_debug1(NGX_LOG_DEBUG_HTTP, cf->log, 0, "ngx_upload_progress name: %V", &value[1]); ctx = ngx_pcalloc(cf->pool, sizeof(ngx_http_uploadprogress_ctx_t)); if (ctx == NULL) { return NGX_CONF_ERROR; } ctx->list_head.prev = NULL; ctx->list_head.next = &ctx->list_tail; ctx->list_tail.prev = &ctx->list_head; ctx->list_tail.next = NULL; n = ngx_parse_size(&value[2]); if (n == NGX_ERROR) { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid size of track_uploads \"%V\"", &value[2]); return NGX_CONF_ERROR; } if (n < (ngx_int_t) (8 * ngx_pagesize)) { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "track_uploads \"%V\" is too small", &value[1]); return NGX_CONF_ERROR; } shm_zone = ngx_shared_memory_add(cf, &value[1], n, &ngx_http_uploadprogress_module); if (shm_zone == NULL) { return NGX_CONF_ERROR; } ngx_log_debug2(NGX_LOG_DEBUG_HTTP, cf->log, 0, "ngx_upload_progress name: %V, szhm_zone: %p", &value[1], shm_zone); if (shm_zone->data) { ctx = shm_zone->data; ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "track_uploads \"%V\" is already created", &value[1]); return NGX_CONF_ERROR; } shm_zone->init = ngx_http_uploadprogress_init_zone; shm_zone->data = ctx; return NGX_CONF_OK; } static char* ngx_http_track_uploads(ngx_conf_t * cf, ngx_command_t * cmd, void *conf) { ngx_http_core_loc_conf_t *clcf; ngx_http_uploadprogress_conf_t *lzcf = conf; ngx_str_t *value; ngx_log_debug0(NGX_LOG_DEBUG_HTTP, cf->log, 0, "ngx_track_uploads in"); value = cf->args->elts; ngx_log_debug1(NGX_LOG_DEBUG_HTTP, cf->log, 0, "ngx_track_uploads name: %V", &value[1]); lzcf->shm_zone = ngx_shared_memory_add(cf, &value[1], 0, &ngx_http_uploadprogress_module); if (lzcf->shm_zone == NULL) { return NGX_CONF_ERROR; } lzcf->track = (u_char) 1; ngx_log_debug2(NGX_LOG_DEBUG_HTTP, cf->log, 0, "ngx_track_uploads name: %V,szhm_zone: %p", &value[1], lzcf->shm_zone); lzcf->timeout = ngx_parse_time(&value[2], 1); if (lzcf->timeout == NGX_ERROR) { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "track_uploads \"%V\" timeout value invalid", &value[1]); return NGX_CONF_ERROR; } clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module); lzcf->handler = clcf->handler; if ( lzcf->handler == NULL ) { return "track_upload should be the last directive in the location, after either proxy_pass or fastcgi_pass"; } clcf->handler = ngx_http_uploadprogress_content_handler; return NGX_CONF_OK; } static char* ngx_http_report_uploads(ngx_conf_t * cf, ngx_command_t * cmd, void *conf) { ngx_http_uploadprogress_conf_t *lzcf = conf; ngx_http_core_loc_conf_t *clcf; ngx_str_t *value; ngx_log_debug0(NGX_LOG_DEBUG_HTTP, cf->log, 0, "ngx_report_uploads in"); value = cf->args->elts; ngx_log_debug1(NGX_LOG_DEBUG_HTTP, cf->log, 0, "ngx_report_uploads name: %V", &value[1]); lzcf->shm_zone = ngx_shared_memory_add(cf, &value[1], 0, &ngx_http_uploadprogress_module); if (lzcf->shm_zone == NULL) { return NGX_CONF_ERROR; } ngx_log_debug2(NGX_LOG_DEBUG_HTTP, cf->log, 0, "ngx_report_uploads name: %V, szhm_zone: %p", &value[1], lzcf->shm_zone); lzcf->track = (u_char) 0; /* install our report handler */ clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module); clcf->handler = ngx_http_reportuploads_handler; return NGX_CONF_OK; } static char* ngx_http_upload_progress_set_template(ngx_conf_t * cf, ngx_http_uploadprogress_template_t *t, ngx_str_t *source) { ssize_t n; ngx_http_script_compile_t sc; n = ngx_http_script_variables_count(source); ngx_memzero(&sc, sizeof(ngx_http_script_compile_t)); t->lengths = NULL; t->values = NULL; sc.cf = cf; sc.source = source; sc.lengths = &t->lengths; sc.values = &t->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; } static char* ngx_http_upload_progress_template(ngx_conf_t * cf, ngx_command_t * cmd, void *conf) { ngx_http_uploadprogress_conf_t *upcf = conf; ngx_str_t *value; ngx_http_uploadprogress_state_map_t *m = ngx_http_uploadprogress_state_map; ngx_http_uploadprogress_template_t *t; value = cf->args->elts; while(m->name.data != NULL) { if((value[1].len == m->name.len && !ngx_strncmp(value[1].data, m->name.data, m->name.len)) || (value[1].len == 2 && !ngx_strncmp(value[1].data, m->name.data, 2))) { break; } m++; } if (m->name.data == NULL) { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "unknown state \"%V\"", &value[1]); return NGX_CONF_ERROR; } t = (ngx_http_uploadprogress_template_t*)upcf->templates.elts + (ngx_uint_t)m->idx; return ngx_http_upload_progress_set_template(cf, t, &value[2]); } static char* ngx_http_upload_progress_java_output(ngx_conf_t * cf, ngx_command_t * cmd, void *conf) { ngx_http_uploadprogress_conf_t *upcf = conf; ngx_http_uploadprogress_template_t *t; ngx_uint_t i; char* rc; t = (ngx_http_uploadprogress_template_t*)upcf->templates.elts; for(i = 0;i < upcf->templates.nelts;i++) { rc = ngx_http_upload_progress_set_template(cf, t + i, ngx_http_uploadprogress_java_defaults + i); if(rc != NGX_CONF_OK) { return rc; } } upcf->content_type.data = (u_char*)"text/javascript"; upcf->content_type.len = sizeof("text/javascript") - 1; return NGX_CONF_OK; } static char* ngx_http_upload_progress_json_output(ngx_conf_t * cf, ngx_command_t * cmd, void *conf) { ngx_http_uploadprogress_conf_t *upcf = conf; ngx_http_uploadprogress_template_t *t; ngx_uint_t i; char* rc; t = (ngx_http_uploadprogress_template_t*)upcf->templates.elts; for(i = 0;i < upcf->templates.nelts;i++) { rc = ngx_http_upload_progress_set_template(cf, t + i, ngx_http_uploadprogress_json_defaults + i); if(rc != NGX_CONF_OK) { return rc; } } upcf->content_type.data = (u_char*)"application/json"; upcf->content_type.len = sizeof("application/json") - 1; return NGX_CONF_OK; } static char* ngx_http_upload_progress_jsonp_output(ngx_conf_t * cf, ngx_command_t * cmd, void *conf) { ngx_http_uploadprogress_conf_t *upcf = conf; ngx_http_uploadprogress_template_t *t; ngx_uint_t i; char* rc; t = (ngx_http_uploadprogress_template_t*)upcf->templates.elts; for(i = 0;i < upcf->templates.nelts;i++) { rc = ngx_http_upload_progress_set_template(cf, t + i, ngx_http_uploadprogress_jsonp_defaults + i); if(rc != NGX_CONF_OK) { return rc; } } upcf->content_type.data = (u_char*)"application/javascript"; upcf->content_type.len = sizeof("application/javascript") - 1; return NGX_CONF_OK; } static ngx_int_t ngx_http_uploadprogress_received_variable(ngx_http_request_t *r, ngx_http_variable_value_t *v, uintptr_t data) { ngx_http_uploadprogress_node_t *up; u_char *p; off_t *value; up = ngx_http_get_module_ctx(r, ngx_http_uploadprogress_module); value = (off_t *) ((char *) up + data); p = ngx_palloc(r->pool, NGX_OFF_T_LEN); if (p == NULL) { return NGX_ERROR; } v->len = ngx_sprintf(p, "%O", up->length - *value) - p; v->valid = 1; v->no_cacheable = 0; v->not_found = 0; v->data = p; return NGX_OK; } static ngx_int_t ngx_http_uploadprogress_offset_variable(ngx_http_request_t *r, ngx_http_variable_value_t *v, uintptr_t data) { ngx_http_uploadprogress_node_t *up; u_char *p; off_t *value; up = ngx_http_get_module_ctx(r, ngx_http_uploadprogress_module); value = (off_t *) ((char *) up + data); p = ngx_palloc(r->pool, NGX_OFF_T_LEN); if (p == NULL) { return NGX_ERROR; } v->len = ngx_sprintf(p, "%O", *value) - p; v->valid = 1; v->no_cacheable = 0; v->not_found = 0; v->data = p; return NGX_OK; } static ngx_int_t ngx_http_uploadprogress_status_variable(ngx_http_request_t *r, ngx_http_variable_value_t *v, uintptr_t data) { ngx_http_uploadprogress_node_t *up; u_char *p; off_t *value; up = ngx_http_get_module_ctx(r, ngx_http_uploadprogress_module); value = (off_t *) ((char *) up + data); p = ngx_palloc(r->pool, NGX_OFF_T_LEN); if (p == NULL) { return NGX_ERROR; } v->len = ngx_sprintf(p, "%O", *value) - p; v->valid = 1; v->no_cacheable = 0; v->not_found = 0; v->data = p; return NGX_OK; } static ngx_int_t ngx_http_uploadprogress_callback_variable(ngx_http_request_t *r, ngx_http_variable_value_t *v, uintptr_t data) { u_char *p, *start_p, *val, prefix[1024]; ngx_http_uploadprogress_conf_t *upcf; u_int len; upcf = ngx_http_get_module_loc_conf(r, ngx_http_uploadprogress_module); if (r->args.len) { /* '=' has to be appended to avoid matching parameters that have the */ /* configured name as a prefix but are longer */ ngx_snprintf(prefix, sizeof(prefix) - 1, "%s=", upcf->jsonp_parameter.data); len = upcf->jsonp_parameter.len + 1; prefix[len] = '\0'; /* Force termination of string */ p = (u_char *) ngx_strstr(r->args.data, prefix); if (p) { p += len; start_p = p; while (p < r->args.data + r->args.len) { if (*((p++) + 1) == '&') { break; } } v->len = p - start_p; val = ngx_palloc(r->pool, v->len + 1); if (val == NULL) { return NGX_ERROR; } ngx_memcpy(val, start_p, v->len); val[v->len] = '\0'; v->valid = 1; v->no_cacheable = 0; v->not_found = 0; v->data = val; } else { return NGX_ERROR; } } else { return NGX_ERROR; } return NGX_OK; }