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146 lines
3.8 KiB
C
146 lines
3.8 KiB
C
/**
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******************************************************************************
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* @file httpd_ssi.c
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* @author QQ DING
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* @version V1.0.0
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* @date 1-September-2015
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* @brief This file contains routines for the processing of SSI directives
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* within shtml files.
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******************************************************************************
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*
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* The MIT License
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* Copyright (c) 2014 MXCHIP Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is furnished
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* to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
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* IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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******************************************************************************
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*/
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/*
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* Description
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* SSI processor for simple web server
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* syntax of a script is
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* %! <func_name> [optional_arg]
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* %! : <include html filename>
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* <standard html>
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*
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*/
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#include <string.h>
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#include "httpd.h"
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#include "httpd_priv.h"
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static int ssi_ready;
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static struct httpd_ssi_call *calls[MAX_REGISTERED_SSIS];
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/* Register an SSI handler */
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int httpd_register_ssi(struct httpd_ssi_call *ssi_call)
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{
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int i;
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if (!ssi_ready)
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return -kInProgressErr;
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/* Verify that the ssi is not already registered */
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for (i = 0; i < MAX_REGISTERED_SSIS; i++) {
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if (!calls[i]) {
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continue;
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}
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if (strncmp(calls[i]->name, ssi_call->name,
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strlen(calls[i]->name)) == 0) {
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return -kInProgressErr;
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}
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}
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/* Find an unoccupied slot in the table */
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for (i = 0; i < MAX_REGISTERED_SSIS && calls[i]; i++)
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;
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/* Check that we're not overrunning the table */
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if (i == MAX_REGISTERED_SSIS)
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return -WM_E_HTTPD_SSI_MAX;
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calls[i] = ssi_call;
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httpd_d("Register ssi %s at %d", ssi_call->name, i);
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return kNoErr;
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}
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/* Unregister an SSI handler */
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void httpd_unregister_ssi(struct httpd_ssi_call *ssi_call)
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{
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int i;
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if (!ssi_ready)
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return;
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for (i = 0; i < MAX_REGISTERED_SSIS; i++) {
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if (!calls[i]) {
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continue;
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}
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if (strncmp(calls[i]->name, ssi_call->name,
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strlen(calls[i]->name)) == 0) {
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calls[i] = NULL;
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httpd_d("Unregister ssi %s at %d", ssi_call->name, i);
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return;
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}
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}
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return;
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}
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/* The null function is returned if no match is found */
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int nullfunction(const httpd_request_t *req, const char *args, int conn,
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char *scratch)
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{
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return kNoErr;
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}
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/* Find a matching SSI function from the table and return it */
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httpd_ssifunction httpd_ssi(char *name)
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{
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struct httpd_ssi_call *f;
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int i;
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if (!ssi_ready)
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return nullfunction;
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/* Find the matching name in the table, return the function. */
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for (i = 0; i < MAX_REGISTERED_SSIS; i++) {
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f = calls[i];
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if (f && strncmp(f->name, name, strlen(f->name)) == 0) {
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httpd_d("Found function: %s", (f)->name);
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return f->function;
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}
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}
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httpd_d("Did not find function %s returning nullfunc", name);
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return nullfunction;
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}
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/** Initialize the SSI handling data structures */
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int httpd_ssi_init(void)
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{
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memset(calls, 0, sizeof(struct httpd_ssi_call *) * MAX_REGISTERED_SSIS);
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ssi_ready = 1;
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return kNoErr;
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}
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