/*
** Copyright (c) 2007 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the GNU General Public
** License version 2 as published by the Free Software Foundation.
**
** This program is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
** General Public License for more details.
**
** You should have received a copy of the GNU General Public
** License along with this library; if not, write to the
** Free Software Foundation, Inc., 59 Temple Place - Suite 330,
** Boston, MA 02111-1307, USA.
**
** Author contact information:
** drh@hwaci.com
** http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains code to do formatting of wiki text.
*/
#include <assert.h>
#include "config.h"
#include "wiki.h"
/*
** Return true if the input string is a well-formed wiki page name.
**
** Well-formed wiki page names do not begin or end with whitespace,
** and do not contain tabs or other control characters and do not
** contain more than a single space character in a row. Well-formed
** names must be between 3 and 100 chracters in length, inclusive.
*/
int wiki_name_is_wellformed(const char *z){
int i;
if( z[0]<=0x20 ){
return 0;
}
for(i=1; z[i]; i++){
if( z[i]<0x20 ) return 0;
if( z[i]==0x20 && z[i-1]==0x20 ) return 0;
}
if( z[i-1]==' ' ) return 0;
if( i<3 || i>100 ) return 0;
return 1;
}
/*
** Check a wiki name. If it is not well-formed, then issue an error
** and return true. If it is well-formed, return false.
*/
static int check_name(const char *z){
if( !wiki_name_is_wellformed(z) ){
style_header("Wiki Page Name Error");
@ The wiki name "<b>%h(z)</b>" is not well-formed. Rules for
@ wiki page names:
@ <ul>
@ <li> Must not begin or end with a space.
@ <li> Must not contain any control characters, including tab or
@ newline.
@ <li> Must not have two or more spaces in a row internally.
@ <li> Must be between 3 and 100 characters in length.
@ </ul>
style_footer();
return 1;
}
return 0;
}
/*
** WEBPAGE: home
** WEBPAGE: index
** WEBPAGE: not_found
*/
void home_page(void){
char *zPageName = db_get("project-name",0);
if( zPageName ){
login_check_credentials();
g.zExtra = zPageName;
cgi_set_parameter_nocopy("name", g.zExtra);
g.okRdWiki = 1;
g.okApndWiki = 0;
g.okWrWiki = 0;
g.okHistory = 0;
wiki_page();
return;
}
style_header("Home");
@ <p>This is a stub home-page for the project.
@ To fill in this page, first go to
@ <a href="%s(g.zBaseURL)/setup_config">setup/config</a>
@ and establish a "Project Name". Then create a
@ wiki page with that name. The content of that wiki page
@ will be displayed in place of this message.
style_footer();
}
/*
** WEBPAGE: wiki
** URL: /wiki?name=PAGENAME
*/
void wiki_page(void){
char *zTag;
int rid;
Blob wiki;
Manifest m;
const char *zPageName;
char *zHtmlPageName;
char *zBody = mprintf("%s","<i>Empty Page</i>");
login_check_credentials();
if( !g.okRdWiki ){ login_needed(); return; }
zPageName = P("name");
if( zPageName==0 ){
wcontent_page();
return;
}
if( check_name(zPageName) ) return;
zTag = mprintf("wiki-%s", zPageName);
rid = db_int(0,
"SELECT rid FROM tagxref"
" WHERE tagid=(SELECT tagid FROM tag WHERE tagname=%Q)"
" ORDER BY mtime DESC", zTag
);
free(zTag);
memset(&m, 0, sizeof(m));
blob_zero(&m.content);
if( rid ){
Blob content;
content_get(rid, &content);
manifest_parse(&m, &content);
if( m.type==CFTYPE_WIKI ){
zBody = m.zWiki;
}
}
if( (rid && g.okWrWiki) || (!rid && g.okNewWiki) ){
style_submenu_element("Edit", "Edit Wiki Page",
mprintf("%s/wikiedit?name=%T", g.zTop, zPageName));
}
if( rid && g.okApndWiki ){
style_submenu_element("Append", "Add A Comment",
mprintf("%s/wikiappend?name=%T", g.zTop, zPageName));
}
if( g.okHistory ){
style_submenu_element("History", "History",
mprintf("%s/whistory?name=%T", g.zTop, zPageName));
}
zHtmlPageName = mprintf("%h", zPageName);
style_header(zHtmlPageName);
blob_init(&wiki, zBody, -1);
wiki_convert(&wiki, 0, 0);
blob_reset(&wiki);
manifest_clear(&m);
style_footer();
}
/*
** WEBPAGE: wikiedit
** URL: /wikiedit?name=PAGENAME
*/
void wikiedit_page(void){
char *zTag;
int rid;
Blob wiki;
Manifest m;
const char *zPageName;
char *zHtmlPageName;
int n;
const char *z;
char *zBody = (char*)P("w");
if( zBody ){
zBody = mprintf("%s", zBody);
}
login_check_credentials();
zPageName = PD("name","");
if( check_name(zPageName) ) return;
zTag = mprintf("wiki-%s", zPageName);
rid = db_int(0,
"SELECT rid FROM tagxref"
" WHERE tagid=(SELECT tagid FROM tag WHERE tagname=%Q)"
" ORDER BY mtime DESC", zTag
);
free(zTag);
if( (rid && !g.okWrWiki) || (!rid && !g.okNewWiki) ){
login_needed();
return;
}
memset(&m, 0, sizeof(m));
blob_zero(&m.content);
if( rid && zBody==0 ){
Blob content;
content_get(rid, &content);
manifest_parse(&m, &content);
if( m.type==CFTYPE_WIKI ){
zBody = m.zWiki;
}
}
if( P("submit")!=0 && zBody!=0 ){
char *zDate;
Blob cksum;
int nrid;
blob_zero(&wiki);
db_begin_transaction();
zDate = db_text(0, "SELECT datetime('now')");
zDate[10] = 'T';
blob_appendf(&wiki, "D %s\n", zDate);
free(zDate);
blob_appendf(&wiki, "L %F\n", zPageName);
if( rid ){
char *zUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", rid);
blob_appendf(&wiki, "P %s\n", zUuid);
free(zUuid);
}
if( g.zLogin ){
blob_appendf(&wiki, "U %F\n", g.zLogin);
}
blob_appendf(&wiki, "W %d\n%s\n", strlen(zBody), zBody);
md5sum_blob(&wiki, &cksum);
blob_appendf(&wiki, "Z %b\n", &cksum);
blob_reset(&cksum);
nrid = content_put(&wiki, 0, 0);
db_multi_exec("INSERT OR IGNORE INTO unsent VALUES(%d)", nrid);
manifest_crosslink(nrid, &wiki);
blob_reset(&wiki);
content_deltify(rid, nrid, 0);
db_end_transaction(0);
cgi_redirectf("wiki?name=%T", zPageName);
}
if( P("cancel")!=0 ){
cgi_redirectf("wiki?name=%T", zPageName);
return;
}
if( zBody==0 ){
zBody = mprintf("<i>Empty Page</i>");
}
zHtmlPageName = mprintf("Edit: %h", zPageName);
style_header(zHtmlPageName);
if( P("preview")!=0 ){
blob_zero(&wiki);
blob_append(&wiki, zBody, -1);
@ Preview:<hr>
wiki_convert(&wiki, 0, 0);
@ <hr>
blob_reset(&wiki);
}
for(n=2, z=zBody; z[0]; z++){
if( z[0]=='\n' ) n++;
}
if( n<20 ) n = 20;
if( n>200 ) n = 200;
@ <form method="POST" action="%s(g.zBaseURL)/wikiedit">
@ <input type="hidden" name="name" value="%h(zPageName)">
@ <textarea name="w" class="wikiedit" cols="80"
@ rows="%d(n)" wrap="virtual">%h(zBody)</textarea>
@ <br>
@ <input type="submit" name="preview" value="Preview Your Changes">
@ <input type="submit" name="submit" value="Apply These Changes">
@ <input type="submit" name="cancel" value="Cancel">
@ </form>
manifest_clear(&m);
style_footer();
}
/*
** Append the wiki text for an remark to the end of the given BLOB.
*/
static void appendRemark(Blob *p){
char *zDate;
const char *zUser;
const char *zRemark;
zDate = db_text(0, "SELECT datetime('now')");
blob_appendf(p, "On %s UTC %h", zDate, g.zLogin);
free(zDate);
zUser = PD("u",g.zLogin);
if( zUser[0] && strcmp(zUser,g.zLogin) ){
blob_appendf(p, " (claiming to be %h)", zUser);
}
zRemark = PD("r","");
blob_appendf(p, " added:\n\n%s", zRemark);
}
/*
** WEBPAGE: wikiappend
** URL: /wikiappend?name=PAGENAME
*/
void wikiappend_page(void){
char *zTag;
int rid;
const char *zPageName;
char *zHtmlPageName;
const char *zUser;
login_check_credentials();
zPageName = PD("name","");
if( check_name(zPageName) ) return;
zTag = mprintf("wiki-%s", zPageName);
rid = db_int(0,
"SELECT rid FROM tagxref"
" WHERE tagid=(SELECT tagid FROM tag WHERE tagname=%Q)"
" ORDER BY mtime DESC", zTag
);
free(zTag);
if( !rid ){
cgi_redirect("index");
return;
}
if( !g.okApndWiki ){
login_needed();
return;
}
if( P("submit")!=0 && P("r")!=0 && P("u")!=0 ){
char *zDate;
Blob cksum;
int nrid;
Blob body;
Blob content;
Blob wiki;
Manifest m;
content_get(rid, &content);
manifest_parse(&m, &content);
blob_zero(&body);
if( m.type==CFTYPE_WIKI ){
blob_appendf(&body, m.zWiki, -1);
}
manifest_clear(&m);
blob_zero(&wiki);
db_begin_transaction();
zDate = db_text(0, "SELECT datetime('now')");
zDate[10] = 'T';
blob_appendf(&wiki, "D %s\n", zDate);
blob_appendf(&wiki, "L %F\n", zPageName);
if( rid ){
char *zUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", rid);
blob_appendf(&wiki, "P %s\n", zUuid);
free(zUuid);
}
if( g.zLogin ){
blob_appendf(&wiki, "U %F\n", g.zLogin);
}
blob_appendf(&body, "\n<hr>\n");
appendRemark(&body);
blob_appendf(&wiki, "W %d\n%s\n", blob_size(&body), blob_str(&body));
md5sum_blob(&wiki, &cksum);
blob_appendf(&wiki, "Z %b\n", &cksum);
blob_reset(&cksum);
nrid = content_put(&wiki, 0, 0);
db_multi_exec("INSERT OR IGNORE INTO unsent VALUES(%d)", nrid);
manifest_crosslink(nrid, &wiki);
blob_reset(&wiki);
content_deltify(rid, nrid, 0);
db_end_transaction(0);
cgi_redirectf("wiki?name=%T", zPageName);
}
if( P("cancel")!=0 ){
cgi_redirectf("wiki?name=%T", zPageName);
return;
}
zHtmlPageName = mprintf("Append Comment To: %h", zPageName);
style_header(zHtmlPageName);
if( P("preview")!=0 ){
Blob preview;
blob_zero(&preview);
appendRemark(&preview);
@ Preview:<hr>
wiki_convert(&preview, 0, 0);
@ <hr>
blob_reset(&preview);
}
zUser = PD("u", g.zLogin);
@ <form method="POST" action="%s(g.zBaseURL)/wikiappend">
@ <input type="hidden" name="name" value="%h(zPageName)">
@ Your Name:
@ <input type="text" name="u" size="20" value="%h(zUser)"><br>
@ Comment to append:<br>
@ <textarea name="r" class="wikiedit" cols="80"
@ rows="10" wrap="virtual">%h(PD("r",""))</textarea>
@ <br>
@ <input type="submit" name="preview" value="Preview Your Comment">
@ <input type="submit" name="submit" value="Append Your Changes">
@ <input type="submit" name="cancel" value="Cancel">
@ </form>
style_footer();
}
/*
** WEBPAGE: whistory
** URL: /whistory?name=PAGENAME
**
** Show the complete change history for a single wiki page.
*/
void whistory_page(void){
Stmt q;
char *zTitle;
char *zSQL;
const char *zPageName;
login_check_credentials();
if( !g.okHistory ){ login_needed(); return; }
zPageName = PD("name","");
zTitle = mprintf("History Of %h", zPageName);
style_header(zTitle);
free(zTitle);
zSQL = mprintf("%s AND event.objid IN "
" (SELECT rid FROM tagxref WHERE tagid="
"(SELECT tagid FROM tag WHERE tagname='wiki-%q'))"
"ORDER BY mtime DESC",
timeline_query_for_www(), zPageName);
db_prepare(&q, zSQL);
free(zSQL);
www_print_timeline(&q, 0, 0, 0, 0);
db_finalize(&q);
style_footer();
}
/*
** WEBPAGE: wcontent
**
** List all available wiki pages with date created and last modified.
*/
void wcontent_page(void){
Stmt q;
login_check_credentials();
if( !g.okRdWiki ){ login_needed(); return; }
style_header("Available Wiki Pages");
@ <ul>
db_prepare(&q,
"SELECT substr(tagname, 6, 1000) FROM tag WHERE tagname GLOB 'wiki-*'"
" ORDER BY lower(tagname)"
);
while( db_step(&q)==SQLITE_ROW ){
const char *zName = db_column_text(&q, 0);
@ <li><a href="%s(g.zBaseURL)/wiki?name=%T(zName)">%h(zName)</a></li>
}
db_finalize(&q);
@ </ul>
style_footer();
}