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本帖最后由 framily 于 2015-08-05 13:20 编辑
- #include <ngx_config.h>
- #include <ngx_core.h>
- #include <ngx_http.h>
- /* Module config */
- typedef struct {
- ngx_str_t ed;
- } ngx_http_echo_loc_conf_t;
- static char *ngx_http_echo(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
- static void *ngx_http_echo_create_loc_conf(ngx_conf_t *cf);
- static char *ngx_http_echo_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child);
- /* Directives */
- static ngx_command_t ngx_http_echo_commands[] =
- {
- {
- ngx_string("echo"),
- NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
- ngx_http_echo,
- NGX_HTTP_LOC_CONF_OFFSET,
- offsetof(ngx_http_echo_loc_conf_t, ed),
- NULL
- },
- ngx_null_command
- };
- /* Http context of the module */
- static ngx_http_module_t ngx_http_echo_module_ctx = {
- NULL, /* preconfiguration */
- NULL, /* postconfiguration */
- NULL, /* create main configuration */
- NULL, /* init main configuration */
- NULL, /* create server configuration */
- NULL, /* merge server configuration */
- ngx_http_echo_create_loc_conf, /* create location configration */
- ngx_http_echo_merge_loc_conf /* merge location configration */
- };
- /* Module */
- ngx_module_t ngx_http_echo_module =
- {
- NGX_MODULE_V1,
- &ngx_http_echo_module_ctx, /* module context */
- ngx_http_echo_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
- };
- /* Handler function */
- static ngx_int_t
- ngx_http_echo_handler(ngx_http_request_t *r)
- {
- ngx_int_t rc;
- ngx_buf_t *b;
- ngx_chain_t out;
- ngx_http_echo_loc_conf_t *elcf;
-
- elcf = ngx_http_get_module_loc_conf(r, ngx_http_echo_module);
-
- if(!(r->method & (NGX_HTTP_HEAD|NGX_HTTP_GET|NGX_HTTP_POST)))
- {
- return NGX_HTTP_NOT_ALLOWED;
- }
-
- r->headers_out.content_type.len = sizeof("text/html") - 1;
- r->headers_out.content_type.data = (u_char *) "text/html";
- r->headers_out.status = NGX_HTTP_OK;
- r->headers_out.content_length_n = elcf->ed.len;
-
- if(r->method == NGX_HTTP_HEAD)
- {
- rc = ngx_http_send_header(r);
-
- if(rc != NGX_OK)
- {
- return rc;
- }
- }
-
- b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t));
-
- if(b == NULL)
- {
- ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
- "Failed to allocate response buffer.");
- return NGX_HTTP_INTERNAL_SERVER_ERROR;
- }
-
- out.buf = b;
- out.next = NULL;
- b->pos = elcf->ed.data;
- b->last = elcf->ed.data + (elcf->ed.len);
- b->memory = 1;
- b->last_buf = 1;
- rc = ngx_http_send_header(r);
-
- if(rc != NGX_OK)
- {
- return rc;
- }
-
- return ngx_http_output_filter(r, &out);
- }
- static char *
- ngx_http_echo(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_echo_handler;
- ngx_conf_set_str_slot(cf,cmd,conf);
- return NGX_CONF_OK;
- }
- static void *
- ngx_http_echo_create_loc_conf(ngx_conf_t *cf)
- {
- ngx_http_echo_loc_conf_t *conf;
- conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_echo_loc_conf_t));
-
- if (conf == NULL)
- {
- return NGX_CONF_ERROR;
- }
-
- conf->ed.len = 0;
- conf->ed.data = NULL;
- return conf;
- }
- static char *
- ngx_http_echo_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child)
- {
- ngx_http_echo_loc_conf_t *prev = parent;
- ngx_http_echo_loc_conf_t *conf = child;
- ngx_conf_merge_str_value(conf->ed, prev->ed, "");
- return NGX_CONF_OK;
- }
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