diff options
Diffstat (limited to 'src/http/modules/ngx_http_status_module.c')
| -rw-r--r-- | src/http/modules/ngx_http_status_module.c | 309 |
1 files changed, 309 insertions, 0 deletions
diff --git a/src/http/modules/ngx_http_status_module.c b/src/http/modules/ngx_http_status_module.c new file mode 100644 index 000000000..ce49ae426 --- /dev/null +++ b/src/http/modules/ngx_http_status_module.c @@ -0,0 +1,309 @@ + +/* + * Copyright (C) Igor Sysoev + */ + + +#include <ngx_config.h> +#include <ngx_core.h> +#include <ngx_http.h> + + +typedef struct { + ngx_http_request_t *request; + ngx_pool_t *pool; + ngx_chain_t *head; + ngx_buf_t *last; + size_t size; +} ngx_http_status_ctx_t; + + +static ngx_int_t ngx_http_status(ngx_http_status_ctx_t *ctx); +static char *ngx_http_set_status(ngx_conf_t *cf, ngx_command_t *cmd, + void *conf); + +static ngx_command_t ngx_http_status_commands[] = { + + { ngx_string("status"), + NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG, + ngx_http_set_status, + 0, + 0, + NULL }, + + ngx_null_command +}; + + + +ngx_http_module_t ngx_http_status_module_ctx = { + NULL, /* pre conf */ + + NULL, /* create main configuration */ + NULL, /* init main configuration */ + + NULL, /* create server configuration */ + NULL, /* merge server configuration */ + + NULL, /* create location configuration */ + NULL /* merge location configuration */ +}; + + +ngx_module_t ngx_http_status_module = { + NGX_MODULE, + &ngx_http_status_module_ctx, /* module context */ + ngx_http_status_commands, /* module directives */ + NGX_HTTP_MODULE, /* module type */ + NULL, /* init module */ + NULL /* init process */ +}; + + +static ngx_int_t ngx_http_status_handler(ngx_http_request_t *r) +{ + ngx_int_t rc; + ngx_http_status_ctx_t ctx; + + if (r->method != NGX_HTTP_GET && r->method != NGX_HTTP_HEAD) { + return NGX_HTTP_NOT_ALLOWED; + } + + rc = ngx_http_discard_body(r); + + if (rc != NGX_OK && rc != NGX_AGAIN) { + return rc; + } + + r->headers_out.content_type = ngx_list_push(&r->headers_out.headers); + if (r->headers_out.content_type == NULL) { + return NGX_HTTP_INTERNAL_SERVER_ERROR; + } + + r->headers_out.content_type->key.len = 0; + r->headers_out.content_type->key.data = NULL; + r->headers_out.content_type->value.len = sizeof("text/plain") - 1; + r->headers_out.content_type->value.data = (u_char *) "text/plain"; + + 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; + } + } + + ctx.request = r; + ctx.pool = r->pool; + ctx.head = NULL; + ctx.size = 0; + + if (ngx_http_status(&ctx) != NGX_OK) { + return NGX_HTTP_INTERNAL_SERVER_ERROR; + } + + r->headers_out.status = NGX_HTTP_OK; + r->headers_out.content_length_n = ctx.size; + + rc = ngx_http_send_header(r); + + if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) { + return rc; + } + + if (!r->main) { + ctx.last->last_buf = 1; + } + + return ngx_http_output_filter(r, ctx.head); +} + + +static ngx_int_t ngx_http_status(ngx_http_status_ctx_t *ctx) +{ + u_char ch; + size_t len, n; + ngx_uint_t i, dash; + ngx_buf_t *b; + ngx_chain_t *cl, **ll; + ngx_connection_t *c; + ngx_http_request_t *r; + ngx_http_core_main_conf_t *cmcf; + + cmcf = ngx_http_get_module_main_conf(ctx->request, ngx_http_core_module); + +#if (NGX_SUPPRESS_WARN) + b = NULL; + ll = NULL; +#endif + + dash = 0; + + /* TODO: old connections */ + + c = ngx_cycle->connections; + for (i = 0; i < ngx_cycle->connection_n; i++) { + + /* TODO: trylock connection mutex */ + + r = c[i].data; + if (r && r->signature == NGX_HTTP_MODULE) { + + /* STUB: should be NGX_PID_T_LEN */ + len = NGX_INT64_LEN /* pid */ + + 1 + NGX_INT32_LEN /* connection */ + + 1 + 1 /* state */ + + 1 + INET_ADDRSTRLEN + + 1 + (r->server_name ? cmcf->max_server_name_len : 1) + + 2; /* "\r\n" */ + + /* BUG: cmcf->max_server_name_len and "*.domain.tld" */ + + + if (r->request_line.len) { + len += 1 + 1 + r->request_line.len + 1; + } + + if (!(b = ngx_create_temp_buf(ctx->pool, len))) { + /* TODO: unlock mutex */ + return NGX_ERROR; + } + + b->last = ngx_sprintf(b->last, "%P %5ui", ngx_pid, i); + + switch (r->http_state) { + case NGX_HTTP_INITING_REQUEST_STATE: + ch = 'I'; + break; + + case NGX_HTTP_READING_REQUEST_STATE: + ch = 'R'; + break; + + case NGX_HTTP_PROCESS_REQUEST_STATE: + ch = 'P'; + break; + + case NGX_HTTP_WRITING_REQUEST_STATE: + ch = 'W'; + break; + + case NGX_HTTP_KEEPALIVE_STATE: + ch = 'K'; + break; + + default: + ch = '?'; + } + + *(b->last++) = ' '; + *(b->last++) = ch; + + *(b->last++) = ' '; + b->last = ngx_cpymem(b->last, c[i].addr_text.data, + c[i].addr_text.len); + for (n = c[i].addr_text.len; n < INET_ADDRSTRLEN; n++) { + *(b->last++) = ' '; + } + + *(b->last++) = ' '; + if (r->server_name) { + b->last = ngx_cpymem(b->last, r->server_name->data, + r->server_name->len); + for (n = r->server_name->len; + n < cmcf->max_server_name_len; + n++) + { + *(b->last++) = ' '; + } + + } else { + *(b->last++) = '?'; + } + + if (r->request_line.len) { + *(b->last++) = ' '; + *(b->last++) = '"'; + b->last = ngx_cpymem(b->last, r->request_line.data, + r->request_line.len); + *(b->last++) = '"'; + + } + + *(b->last++) = CR; *(b->last++) = LF; + + dash = 0; + + } else if (c[i].fd != -1) { + len = NGX_INT64_LEN /* pid */ + + 1 + NGX_INT32_LEN /* connection */ + + 1 + 1 /* state */ + + 2; /* "\r\n" */ + + if (!(b = ngx_create_temp_buf(ctx->pool, len))) { + /* TODO: unlock mutex */ + return NGX_ERROR; + } + + b->last = ngx_sprintf(b->last, "%P %5ui", ngx_pid, i); + + *(b->last++) = ' '; + *(b->last++) = 's'; + + *(b->last++) = CR; *(b->last++) = LF; + + dash = 0; + + } else if (!dash) { + len = 3; + + if (!(b = ngx_create_temp_buf(ctx->pool, len))) { + /* TODO: unlock mutex */ + return NGX_ERROR; + } + + *(b->last++) = '-'; *(b->last++) = CR; *(b->last++) = LF; + + dash = 1; + + } else { + continue; + } + + /* TODO: unlock mutex */ + + if (!(cl = ngx_alloc_chain_link(ctx->pool))) { + return NGX_ERROR; + } + + if (ctx->head) { + *ll = cl; + + } else { + ctx->head = cl; + } + + cl->buf = b; + cl->next = NULL; + ll = &cl->next; + + ctx->size += b->last - b->pos; + } + + ctx->last = b; + + return NGX_OK; +} + + +static char *ngx_http_set_status(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) +{ + ngx_http_core_loc_conf_t *clcf; + + clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module); + clcf->handler = ngx_http_status_handler; + + return NGX_CONF_OK; +} |