nginx模块开发入门
#include#include
#include
typedef struct
{
ngx_str_t hello_string;
}ngx_http_hello_loc_conf_t;
static ngx_int_t ngx_http_hello_init(ngx_conf_t *cf);
static void *ngx_http_hello_create_loc_conf(ngx_conf_t *cf);
static char *ngx_http_hello_string(ngx_conf_t *cf, ngx_command_t *cmd,
void *conf);
static ngx_command_t ngx_http_hello_commands[] = {
{
ngx_string("hello_string"),
NGX_HTTP_LOC_CONF|NGX_CONF_NOARGS|NGX_CONF_TAKE1,
ngx_http_hello_string,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_hello_loc_conf_t, hello_string),
NULL
},
ngx_null_command
};
static ngx_http_module_t ngx_http_hello_module_ctx = {
NULL, /* preconfiguration */
ngx_http_hello_init, /* postconfiguration */
NULL, /* create main configuration */
NULL, /* init main configuration */
NULL, /* create server configuration */
NULL, /* merge server configuration */
ngx_http_hello_create_loc_conf, /* create location configuration */
NULL /* merge location configuration */
};
ngx_module_t ngx_http_hello_module = {
NGX_MODULE_V1,
&ngx_http_hello_module_ctx, /* module context */
ngx_http_hello_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_int_t
ngx_http_hello_handler(ngx_http_request_t *r)
{
ngx_http_discard_request_body(r);
ngx_str_t response = ngx_string("Hello world");
ngx_buf_t* b;
b = ngx_create_temp_buf(r->pool, response.len);
ngx_memcpy(b->pos, response.data, response.len);
b->last = b->pos + response.len;
b->last_buf = 1;
r->headers_out.status = NGX_HTTP_OK;
r->headers_out.content_length_n = response.len;
ngx_http_send_header(r);
ngx_chain_t out;
out.buf = b;
out.next = NULL;
return ngx_http_output_filter(r, &out);
}
static void *ngx_http_hello_create_loc_conf(ngx_conf_t *cf)
{
ngx_http_hello_loc_conf_t* local_conf = NULL;
local_conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_hello_loc_conf_t));
if (local_conf == NULL)
{
return NULL;
}
ngx_str_null(&local_conf->hello_string);
return local_conf;
}
static char *
ngx_http_hello_string(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
{
ngx_http_hello_loc_conf_t* local_conf;
local_conf = conf;
char* rv = ngx_conf_set_str_slot(cf, cmd, conf);
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "hello_string:%s", local_conf->hello_string.data);
return rv;
}
static ngx_int_t
ngx_http_hello_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);
h = ngx_array_push(&cmcf->phases.handlers);
if (h == NULL) {
return NGX_ERROR;
}
*h = ngx_http_hello_handler;
return NGX_OK;
}
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