/*
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/*
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* form.c -- Form processing (in-memory CGI) for the GoAhead Web server
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* form.c -- Form processing (in-memory CGI) for the GoAhead Web server
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*
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*
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* Copyright (c) Go Ahead Software Inc., 1995-1999. All Rights Reserved.
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* Copyright (c) Go Ahead Software Inc., 1995-1999. All Rights Reserved.
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*
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*
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* See the file "license.txt" for usage and redistribution license requirements
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* See the file "license.txt" for usage and redistribution license requirements
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*/
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*/
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/********************************** Description *******************************/
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/********************************** Description *******************************/
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/*
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/*
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* This module implements the /goform handler. It emulates CGI processing
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* This module implements the /goform handler. It emulates CGI processing
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* but performs this in-process and not as an external process. This enables
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* but performs this in-process and not as an external process. This enables
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* a very high performance implementation with easy parsing and decoding
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* a very high performance implementation with easy parsing and decoding
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* of query strings and posted data.
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* of query strings and posted data.
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*/
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*/
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/*********************************** Includes *********************************/
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/*********************************** Includes *********************************/
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#include "wsIntrn.h"
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#include "wsIntrn.h"
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/************************************ Locals **********************************/
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/************************************ Locals **********************************/
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static sym_fd_t formSymtab = -1; /* Symbol table for form handlers */
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static sym_fd_t formSymtab = -1; /* Symbol table for form handlers */
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/************************************* Code ***********************************/
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/************************************* Code ***********************************/
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/*
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/*
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* Process a form request. Returns 1 always to indicate it handled the URL
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* Process a form request. Returns 1 always to indicate it handled the URL
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*/
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*/
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int websFormHandler(webs_t wp, char_t *urlPrefix, char_t *webDir, int arg,
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int websFormHandler(webs_t wp, char_t *urlPrefix, char_t *webDir, int arg,
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char_t *url, char_t *path, char_t* query)
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char_t *url, char_t *path, char_t* query)
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{
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{
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sym_t *sp;
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sym_t *sp;
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char_t formBuf[FNAMESIZE];
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char_t formBuf[FNAMESIZE];
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char_t *cp, *formName;
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char_t *cp, *formName;
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int (*fn)(void *sock, char_t* path, char_t *args);
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int (*fn)(void *sock, char_t* path, char_t *args);
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a_assert(websValid(wp));
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a_assert(websValid(wp));
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a_assert(url && *url);
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a_assert(url && *url);
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a_assert(path && *path == '/');
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a_assert(path && *path == '/');
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websStats.formHits++;
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websStats.formHits++;
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/*
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/*
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* Extract the form name
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* Extract the form name
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*/
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*/
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gstrncpy(formBuf, path, TSZ(formBuf));
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gstrncpy(formBuf, path, TSZ(formBuf));
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if ((formName = gstrchr(&formBuf[1], '/')) == NULL) {
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if ((formName = gstrchr(&formBuf[1], '/')) == NULL) {
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websError(wp, 200, T("Missing form name"));
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websError(wp, 200, T("Missing form name"));
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return 1;
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return 1;
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}
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}
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formName++;
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formName++;
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if ((cp = gstrchr(formName, '/')) != NULL) {
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if ((cp = gstrchr(formName, '/')) != NULL) {
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*cp = '\0';
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*cp = '\0';
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}
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}
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/*
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/*
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* Lookup the C form function first and then try tcl (no javascript support
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* Lookup the C form function first and then try tcl (no javascript support
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* yet).
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* yet).
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*/
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*/
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sp = symLookup(formSymtab, formName);
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sp = symLookup(formSymtab, formName);
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if (sp == NULL) {
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if (sp == NULL) {
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websError(wp, 200, T("Form %s is not defined"), formName);
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websError(wp, 200, T("Form %s is not defined"), formName);
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} else {
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} else {
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fn = (int (*)(void*, char_t*, char_t*)) sp->content.value.integer;
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fn = (int (*)(void*, char_t*, char_t*)) sp->content.value.integer;
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a_assert(fn);
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a_assert(fn);
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if (fn) {
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if (fn) {
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/*
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/*
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* For good practice, forms must call websDone()
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* For good practice, forms must call websDone()
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*/
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*/
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(*fn)((void*) wp, formName, query);
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(*fn)((void*) wp, formName, query);
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if (websValid(wp)) {
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if (websValid(wp)) {
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websError(wp, 200, T("Form didn't call websDone"));
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websError(wp, 200, T("Form didn't call websDone"));
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}
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}
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}
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}
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}
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}
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return 1;
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return 1;
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}
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}
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/******************************************************************************/
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/******************************************************************************/
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/*
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/*
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* Define a form function in the "form" map space.
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* Define a form function in the "form" map space.
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*/
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*/
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int websFormDefine(char_t *name, void (*fn)(webs_t wp, char_t *path,
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int websFormDefine(char_t *name, void (*fn)(webs_t wp, char_t *path,
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char_t *query))
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char_t *query))
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{
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{
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static int once = 0;
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static int once = 0;
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a_assert(name && *name);
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a_assert(name && *name);
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a_assert(fn);
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a_assert(fn);
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if (fn == NULL) {
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if (fn == NULL) {
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return -1;
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return -1;
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}
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}
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if (once++ == 0) {
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if (once++ == 0) {
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websFormOpen();
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websFormOpen();
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}
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}
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symEnter(formSymtab, name, valueInteger((int) fn), (int) NULL);
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symEnter(formSymtab, name, valueInteger((int) fn), (int) NULL);
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return 0;
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return 0;
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}
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}
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/******************************************************************************/
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/******************************************************************************/
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/*
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/*
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* Open the symbol table for forms.
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* Open the symbol table for forms.
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*/
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*/
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void websFormOpen()
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void websFormOpen()
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{
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{
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formSymtab = symOpen(64);
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formSymtab = symOpen(64);
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}
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}
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/******************************************************************************/
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/******************************************************************************/
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/*
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/*
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* Close the symbol table for forms.
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* Close the symbol table for forms.
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*/
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*/
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void websFormClose()
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void websFormClose()
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{
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{
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if (formSymtab != -1) {
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if (formSymtab != -1) {
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symClose(formSymtab, NULL);
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symClose(formSymtab, NULL);
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}
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}
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}
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}
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/******************************************************************************/
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/******************************************************************************/
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/*
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/*
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* Write a webs header. This is a convenience routine to write a common
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* Write a webs header. This is a convenience routine to write a common
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* header for a form back to the browser.
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* header for a form back to the browser.
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*/
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*/
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void websHeader(webs_t wp)
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void websHeader(webs_t wp)
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{
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{
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a_assert(websValid(wp));
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a_assert(websValid(wp));
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websWrite(wp, T("HTTP/1.0 200 OK\n"));
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websWrite(wp, T("HTTP/1.0 200 OK\n"));
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/*
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/*
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* By license terms the following line of code must not be modified
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* By license terms the following line of code must not be modified
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*/
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*/
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websWrite(wp, T("Server: GoAhead-Webs\r\n"));
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websWrite(wp, T("Server: GoAhead-Webs\r\n"));
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websWrite(wp, T("Pragma: no-cache\n"));
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websWrite(wp, T("Pragma: no-cache\n"));
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websWrite(wp, T("Cache-control: no-cache\n"));
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websWrite(wp, T("Cache-control: no-cache\n"));
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websWrite(wp, T("Content-Type: text/html\n"));
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websWrite(wp, T("Content-Type: text/html\n"));
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websWrite(wp, T("\n"));
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websWrite(wp, T("\n"));
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websWrite(wp, T("<html>\n"));
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websWrite(wp, T("<html>\n"));
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}
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}
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/******************************************************************************/
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/******************************************************************************/
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/*
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/*
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* Write a webs footer
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* Write a webs footer
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*/
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*/
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void websFooter(webs_t wp)
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void websFooter(webs_t wp)
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{
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{
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a_assert(websValid(wp));
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a_assert(websValid(wp));
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websWrite(wp, T("</html>\n"));
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websWrite(wp, T("</html>\n"));
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}
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}
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/******************************************************************************/
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/******************************************************************************/
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