apache module 读取配置文件

#include "httpd.h"
#include "http_config.h"
#include "http_protocol.h"
#include "ap_config.h"
/* 头文件，本文用到了ap_rprintf函数 */
#include "apr.h"
#include "apr_lib.h"
#include "apr_strings.h"
#include "apr_want.h"

//该模块的配置信息定义一个结构。
typedef struct 
{
  short IsAll;
  const  char *gpfpath;
}auth_jira_conf;

//声明模块名称
module AP_MODULE_DECLARE_DATA pathtest_module;

// 测试用的handler实际。输出从配置文件中读入的配置信息。
static int pathtest_handler(request_rec *r)
{
   r->content_type = "text/html";
   //取conf数据
  auth_jira_conf *conf = ap_get_module_config(r->per_dir_config,
    &pathtest_module);
  ap_rprintf(r, "IsAll:%d\n",conf->IsAll);
  ap_rprintf(r, "path:%s",conf->gpfpath);
   return OK;
}

static void pathtest_register_hooks(apr_pool_t *p)
{
     ap_hook_handler(pathtest_handler, NULL, NULL, APR_HOOK_MIDDLE);
}

/* 设置IsAll字段的读放法 */
static const char *set_authjira_is_all_check(cmd_parms *cmd,
                                             void *mconfig,
                                             int arg)
{
  auth_jira_conf *conf = (auth_jira_conf *) mconfig;
  conf->IsAll = arg;
  return NULL;
}
/* 读取设置某个文件的字符串方法，对于文件，判断文件是否有效 */
static const char *set_jira_group_file(cmd_parms *cmd,
                                          void *mconfig,
                                          const char *name)
{
  auth_jira_conf *conf = (auth_jira_conf *) mconfig;
  /*ap_configfile_t *f = NULL;
  apr_status_t status;

  if(strlen(name) <= 0)
    return "File can not be null.";

  status = ap_pcfg_openfile(&f, cmd->pool, name);

  if (status != APR_SUCCESS) {
    return “Can not open given  file.”;
  }
  ap_cfg_closefile(f);*/

  conf->gpfpath = apr_pstrdup(cmd->pool, name);

  return NULL;
}
/* init per dir */
static void *create_authjira_dir_config(apr_pool_t *p, char *d)
{
  auth_jira_conf *conf = (auth_jira_conf *)apr_pcalloc(p, sizeof(*conf));
  if(conf == NULL) return NULL;
  conf->gpfpath         = d;
  return conf;
}

//对应的http.conf的命令读到方法。
static const command_rec authn_jira_cmds[] =
{
  AP_INIT_FLAG("IsAllCheck", set_authjira_is_all_check, NULL, OR_FILEINFO,
  "enable authSVN or not."),
  AP_INIT_TAKE1("filepath", set_jira_group_file,   NULL, OR_FILEINFO,
  "set jira group file."),
  { NULL }
};

/* Dispatch list for API hooks */
module AP_MODULE_DECLARE_DATA pathtest_module = {
          STANDARD20_MODULE_STUFF,
         create_authjira_dir_config, /* create per-dir    config structures */
          NULL,                  /* merge per-dir    config structures */
          NULL,                  /* create per-server config structures */
          NULL,                  /* merge per-server config structures */
          authn_jira_cmds,                  /* table of config file commands       */
          pathtest_register_hooks /* register hooks                      */
};

然后在配置文件中添加

<Location />
IsAllCheck on
filepath /usr/local/abc
SetHandler pathtest

</Location>

通过apxs -a -c -i /path_to/mod_pathtest.c 添加该模块。

重启apache ,打开http://localhost/

就可以看到读取到了配置文件信息。

 参考网址：http://www.apachetutor.org/dev/config