webcit/wiki.c

   1 /*
   2  * $Id$
   3  *
   4  * Functions pertaining to rooms with a wiki view
   5  */
   6
   7 #include "webcit.h"
   8 #include "groupdav.h"
   9
  10 /*
  11  * Convert a string to something suitable as a wiki index
  12  */
  13 void str_wiki_index(char *s)
  14 {
  15         int i;
  16
  17         if (s == NULL) return;
  18
  19         /* First remove all non-alphanumeric characters */
  20         for (i=0; i<strlen(s); ++i) {
  21                 if (!isalnum(s[i])) {
  22                         strcpy(&s[i], &s[i+1]);
  23                 }
  24         }
  25
  26         /* Then make everything lower case */
  27         for (i=0; i<strlen(s); ++i) {
  28                 s[i] = tolower(s[i]);
  29         }
  30 }
  31
  32 /*
  33  * Display a specific page from a wiki room
  34  *
  35  * "rev" may be set to an empty string to display the current version.
  36  */
  37 void display_wiki_page_backend(const StrBuf *roomname, char *pagename, char *rev)
  38 {
  39         const StrBuf *Mime;
  40         long msgnum = (-1L);
  41         char buf[256];
  42
  43         str_wiki_index(pagename);
  44
  45         if (StrLength(roomname) > 0) {
  46
  47                 /* If we're not in the correct room, try going there. */
  48                 if (strcasecmp(ChrPtr(roomname), ChrPtr(WC->wc_roomname))) {
  49                         gotoroom(roomname);
  50                 }
  51
  52                 /* If we're still not in the correct room, it doesn't exist. */
  53                 if (strcasecmp(ChrPtr(roomname), ChrPtr(WC->wc_roomname))) {
  54                         wc_printf(_("There is no room called '%s'."), ChrPtr(roomname));
  55                         return;
  56                 }
  57
  58         }
  59
  60         if (WC->wc_view != VIEW_WIKI) {
  61                 wc_printf(_("'%s' is not a Wiki room."), ChrPtr(roomname));
  62                 return;
  63         }
  64
  65         if (IsEmptyStr(pagename)) {
  66                 strcpy(pagename, "home");
  67         }
  68
  69         /* Found it!  Now read it. */
  70
  71         if ((rev != NULL) && (strlen(rev) > 0)) {
  72                 /* read an older revision */
  73                 serv_printf("WIKI rev|%s|%s|fetch", pagename, rev);
  74                 serv_getln(buf, sizeof buf);
  75                 if (buf[0] == '2') {
  76                         msgnum = extract_long(&buf[4], 0);
  77                 }
  78         }
  79         else {
  80                 /* read the current revision? */
  81                 msgnum = locate_message_by_uid(pagename);
  82         }
  83
  84         if (msgnum >= 0L) {
  85                 read_message(WC->WBuf, HKEY("view_message"), msgnum, NULL, &Mime);
  86                 return;
  87         }
  88
  89         wc_printf("<br /><br />"
  90                 "<div align=\"center\">"
  91                 "<table border=\"0\" bgcolor=\"#ffffff\" cellpadding=\"10\">"
  92                 "<tr><td align=\"center\">"
  93         );
  94         wc_printf("<br><b>");
  95         wc_printf(_("There is no page called '%s' here."), pagename);
  96         wc_printf("</b><br><br>");
  97         wc_printf(_("Select the 'Edit this page' link in the room banner "
  98                 "if you would like to create this page."));
  99         wc_printf("<br><br>");
 100         wc_printf("</td></tr></table></div>\n");
 101 }
 102
 103
 104 /*
 105  * Display a specific page from a wiki room
 106  */
 107 void display_wiki_page(void)
 108 {
 109         const StrBuf *roomname;
 110         char pagename[128];
 111         char rev[128];
 112
 113         output_headers(1, 1, 1, 0, 0, 0);
 114         roomname = sbstr("room");
 115         safestrncpy(pagename, bstr("page"), sizeof pagename);
 116         safestrncpy(rev, bstr("rev"), sizeof rev);
 117         display_wiki_page_backend(roomname, pagename, rev);
 118         wDumpContent(1);
 119 }
 120
 121
 122 /*
 123  * Display the revision history for a wiki page (template callback)
 124  */
 125 void tmplput_display_wiki_history(StrBuf *Target, WCTemplputParams *TP)
 126 {
 127         const StrBuf *roomname;
 128         char pagename[128];
 129         StrBuf *Buf;
 130         int row = 0;
 131
 132         roomname = sbstr("room");
 133         safestrncpy(pagename, bstr("page"), sizeof pagename);
 134         str_wiki_index(pagename);
 135
 136         if (StrLength(roomname) > 0) {
 137
 138                 /* If we're not in the correct room, try going there. */
 139                 if (strcasecmp(ChrPtr(roomname), ChrPtr(WC->wc_roomname))) {
 140                         gotoroom(roomname);
 141                 }
 142
 143                 /* If we're still not in the correct room, it doesn't exist. */
 144                 if (strcasecmp(ChrPtr(roomname), ChrPtr(WC->wc_roomname))) {
 145                         wc_printf(_("There is no room called '%s'."), ChrPtr(roomname));
 146                         return;
 147                 }
 148
 149         }
 150
 151         serv_printf("WIKI history|%s", pagename);
 152         Buf = NewStrBuf();
 153         StrBuf_ServGetln(Buf);
 154         if (GetServerStatus(Buf, NULL) == 1) {
 155
 156                 time_t rev_date;
 157                 char rev_date_displayed[64];
 158                 StrBuf *rev_uuid = NewStrBuf();
 159                 StrBuf *author = NewStrBuf();
 160                 StrBuf *node = NewStrBuf();
 161
 162                 wc_printf("<div class=\"fix_scrollbar_bug\">"
 163                         "<table class=\"wiki_history_background\">"
 164                 );
 165
 166                 wc_printf("<th>%s</th>", _("Date"));
 167                 wc_printf("<th>%s</th>", _("Author"));
 168
 169                 while(StrBuf_ServGetln(Buf), strcmp(ChrPtr(Buf), "000")) {
 170
 171                         rev_date = extract_long(ChrPtr(Buf), 1);
 172                         webcit_fmt_date(rev_date_displayed, sizeof rev_date_displayed, rev_date, DATEFMT_FULL);
 173                         StrBufExtract_token(author, Buf, 2, '|');
 174
 175                         wc_printf("<tr bgcolor=\"%s\">", ((row%2) ? "#FFFFFF" : "#DDDDDD"));
 176                         wc_printf("<td>%s</td><td>", rev_date_displayed);
 177                         if (!strcasecmp(ChrPtr(node), (char *)WC->serv_info->serv_nodename)) {
 178                                 escputs(ChrPtr(author));
 179                                 wc_printf(" @ ");
 180                                 escputs(ChrPtr(node));
 181                         }
 182                         else {
 183                                 wc_printf("<a href=\"showuser?who=");
 184                                 urlescputs(ChrPtr(author));
 185                                 wc_printf("\">");
 186                                 escputs(ChrPtr(author));
 187                                 wc_printf("</a>");
 188                         }
 189                         wc_printf("</td>");
 190
 191                         if (row == 0) {
 192                                 wc_printf("<td><a href=\"wiki?page=%s\">%s</a></td>",
 193                                         bstr("page"),
 194                                         _("(show)")
 195                                 );
 196                                 wc_printf("<td>(%s)</td>", _("Current version"));
 197                         }
 198
 199                         else {
 200                                 wc_printf("<td><a href=\"wiki?page=%s?rev=%s\">%s</a></td>",
 201                                         bstr("page"),
 202                                         ChrPtr(rev_uuid),
 203                                         _("(show)")
 204                                 );
 205                                 wc_printf("</td><td><a href=\"wiki_revert?page=%s?rev=%s\">%s</a></td>",
 206                                         bstr("page"),
 207                                         ChrPtr(rev_uuid),
 208                                         _("(revert)")
 209                                 );
 210                         }
 211                         wc_printf("</tr>\n");
 212
 213                         /* Extract all fields except the author and date after displaying the row.  This
 214                          * is deliberate, because the timestamp reflects when the diff was written, not
 215                          * when the version which it reflects was written.  Similarly, the name associated
 216                          * with each diff is the author who created the newer version of the page that
 217                          * made the diff happen.
 218                          */
 219                         StrBufExtract_token(rev_uuid, Buf, 0, '|');
 220                         StrBufExtract_token(node, Buf, 3, '|');
 221                         ++row;
 222                 }
 223
 224                 wc_printf("</table>\n");
 225                 FreeStrBuf(&author);
 226                 FreeStrBuf(&node);
 227                 FreeStrBuf(&rev_uuid);
 228         }
 229         else {
 230                 wc_printf("%s", ChrPtr(Buf));
 231         }
 232
 233         FreeStrBuf(&Buf);
 234 }
 235
 236
 237
 238 /*
 239  * Display the revision history for a wiki page
 240  */
 241 void display_wiki_history(void)
 242 {
 243         output_headers(1, 1, 1, 0, 0, 0);
 244         do_template("wiki_history", NULL);
 245         wDumpContent(1);
 246 }
 247
 248
 249 int wiki_Cleanup(void **ViewSpecific)
 250 {
 251         char pagename[5];
 252         safestrncpy(pagename, "home", sizeof pagename);
 253         display_wiki_page_backend(WC->wc_roomname, pagename, "");
 254         wDumpContent(1);
 255         return 0;
 256 }
 257
 258 void
 259 InitModule_WIKI
 260 (void)
 261 {
 262         RegisterReadLoopHandlerset(
 263                 VIEW_WIKI,
 264                 NULL,
 265                 NULL,
 266                 NULL,
 267                 NULL,
 268                 wiki_Cleanup
 269         );
 270
 271         WebcitAddUrlHandler(HKEY("wiki"), "", 0, display_wiki_page, 0);
 272         WebcitAddUrlHandler(HKEY("wiki_history"), "", 0, display_wiki_history, 0);
 273         /* WebcitAddUrlHandler(HKEY("wiki_revert"), "", 0, wiki_revert, 0); FIXME implement this */
 274         RegisterNamespace("WIKI:DISPLAYHISTORY", 0, 0, tmplput_display_wiki_history, NULL, CTX_NONE);
 275 }