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#include <ngx_core.h>
#include <ngx_http.h>
#include <nginx.h>
static char *ngx_hello_world(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
static ngx_int_t ngx_hello_world_get_output(ngx_http_request_t *r, char *out_buf);
static ngx_int_t ngx_hello_world_handler(ngx_http_request_t *r);
/* Commands */
static ngx_command_t ngx_hello_world_commands[] = {
{ ngx_string("ngx_hello_world"),
NGX_HTTP_LOC_CONF|NGX_CONF_NOARGS,
ngx_hello_world,
NGX_HTTP_LOC_CONF_OFFSET,
0,
NULL },
ngx_null_command
};
static ngx_http_module_t ngx_hello_world_module_ctx = {
NULL, /* preconfiguration */
NULL, /* postconfiguration */
NULL, /* create main configuration */
NULL, /* init main configuration */
NULL, /* create server configuration */
NULL, /* merge server configuration */
NULL, /* create location configuration */
NULL /* merge location configuration */
};
/* hook */
ngx_module_t ngx_hello_world_module = {
NGX_MODULE_V1,
&ngx_hello_world_module_ctx, /* module context */
ngx_hello_world_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_hello_world_get_output(ngx_http_request_t *r, char *out_buf){
sprintf(out_buf, "%s", "Hello World!");
return NGX_OK;
}
static ngx_int_t
ngx_hello_world_handler(ngx_http_request_t *r)
{
ngx_int_t rc;
ngx_buf_t *b;
ngx_chain_t out;
/* Http Output Buffer */
char out_buf[20] = {0};
if (!(r->method & (NGX_HTTP_GET|NGX_HTTP_HEAD))) {
return NGX_HTTP_NOT_ALLOWED;
}
rc = ngx_http_discard_request_body(r);
if (rc != NGX_OK && rc != NGX_AGAIN) {
return rc;
}
//定制头信息
r->headers_out.content_type.len = sizeof("text/html") - 1;
r->headers_out.content_type.data = (u_char *) "text/html";
if (r->method == NGX_HTTP_HEAD) {
rc = ngx_http_send_header(r);
if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) {
return rc;
}
}
//获取输出的body
ngx_hello_world_get_output(r, out_buf);
b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t));
if (b == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
out.buf = b;
out.next = NULL;
b->pos = (u_char *)out_buf;
b->last = (u_char *)out_buf + strlen(out_buf);
b->memory = 1;
b->last_buf = 1;
r->headers_out.status = NGX_HTTP_OK;
r->headers_out.content_length_n = strlen(out_buf);
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);
}
static char *
ngx_hello_world(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
{
ngx_http_core_loc_conf_t *clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module);
/* register hanlder */
clcf->handler = ngx_hello_world_handler;
return NGX_CONF_OK;
}
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