写C是个撸sir

/*

**  mod_acthumb.c -- Apache sample acthumb module

**  [Autogenerated via ``apxs -n acthumb -g'']

**

**  To play with this sample module first compile it into a

**  DSO file and install it into Apache's modules directory

**  by running:

**

**    $ apxs -c -i mod_acthumb.c

**

**  Then activate it in Apache's httpd.conf file for instance

**  for the URL /acthumb in as follows:

**

**    #   httpd.conf

**    LoadModule acthumb_module modules/mod_acthumb.so

**    <Location /acthumb>

**    SetHandler acthumb

**    </Location>

**

**  Then after restarting Apache via

**

**    $ apachectl restart

**

**  you immediately can request the URL /acthumb and watch for the

**  output of this module. This can be achieved for instance via:

**

**    $ lynx -mime_header http://localhost/acthumb

**

**  The output should be similar to the following one:

**

**    HTTP/1.1 200 OK

**    Date: Tue, 31 Mar 1998 14:42:22 GMT

**    Server: Apache/1.3.4 (Unix)

**    Connection: close

**    Content-Type: text/html

**

**    The sample page from mod_acthumb.c

*/

#include <string.h>

#include <stdio.h>

#include <stdlib.h>

#include <unistd.h>

#include "httpd.h"

#include "http_config.h"

#include "http_protocol.h"

#include "ap_config.h"

#include "wand/MagickWand.h"

/* The sample content handler */

static int acthumb_handler(request_rec *r)

{

    if (strcmp(r->handler, "application/acjpg")) {

        return DECLINED;

    }

    r->content_type = "image/jpeg";

    if (!r->header_only){

		char src[300];

	   	char dest[300];

		char generatepic[300];

		memset(dest, '\0', sizeof(dest));

		strcpy(src,r->filename);		//1.jpg.acjpg

		strncpy(dest, src, strlen(src)-6);	//.acjpg six letters 1.jpg

		char *widths = strtok(r->args,"@"); 	//800

		char *heights = strtok(NULL,"@");	//700

		int width=atoi(widths);

		int height = atoi(heights);

		if((width==50 && height==50) || (width==100 && height==100) || (width==300 && height==300) || (width==500 && height==500) || (width==640 && height==640) || (width==640 && height > 200)){

		  	strncpy(generatepic, dest, strlen(src)-10);	//10 .jpg.acjpg fetch 1

			char *fileprefix = strtok(dest,".");

			char *filesuffix = strtok(NULL,".");

			char *POSFILETYPE[]={"jpg","png","gif","jpeg"};

		 	int i;

			int hasfiletype=0;

			for( i = 0; i < 4; i=i+1){

				if(strcmp(POSFILETYPE[i],filesuffix)==0){

					hasfiletype = 1;

				}

			}

			if(hasfiletype==0){

				r->status=HTTP_NOT_FOUND;

				ap_send_error_response(r, 0);

			}

			strcat(generatepic,"_");

			strcat(generatepic,widths);

			strcat(generatepic,"_");

			strcat(generatepic,heights);

			strcat(generatepic,".");

			strcat(generatepic,filesuffix);

			strcat(dest,".");

			strcat(dest,filesuffix);

			if((access(generatepic,F_OK))==-1){

				MagickBooleanType status;

			  	MagickWand *magick_wand;

				MagickWandGenesis();

				magick_wand=NewMagickWand();

				status=MagickReadImage(magick_wand,dest);

			 	//while (MagickNextImage(magick_wand) != MagickFalse)

			    		MagickResizeImage(magick_wand,width,height,LanczosFilter,1);

				status=MagickWriteImages(magick_wand,generatepic,MagickTrue);

				magick_wand=DestroyMagickWand(magick_wand);

			 	MagickWand*();

			} 

			apr_file_t      *file;

			apr_size_t      sent;

			apr_finfo_t file_info;

			apr_status_t    rc;

			apr_stat(&file_info, generatepic, APR_FINFO_MIN, r->pool);

			rc = apr_file_open(&file, generatepic, APR_READ, APR_OS_DEFAULT,

			                    r->pool);

			if (rc == APR_SUCCESS) {

			    ap_send_fd(file, r, 0, (apr_size_t)file_info.size, &sent);

			    apr_file_close(file);

			}

			else {

			  ap_rputs(generatepic,r);

			}

		}else{

			r->status=HTTP_NOT_FOUND;

				ap_send_error_response(r, 0);

		}

    }

    return OK;

}

static void acthumb_register_hooks(apr_pool_t *p)

{

    ap_hook_handler(acthumb_handler, NULL, NULL, APR_HOOK_MIDDLE);

}

/* Dispatch list for API hooks */

module AP_MODULE_DECLARE_DATA acthumb_module = {

    STANDARD20_MODULE_STUFF,

    NULL,                  /* create per-dir    config structures */

    NULL,                  /* merge  per-dir    config structures */

    NULL,                  /* create per-server config structures */

    NULL,                  /* merge  per-server config structures */

    NULL,                  /* table of config file commands       */

    acthumb_register_hooks  /* register hooks                      */

};