final touches on dkim test harness
[citadel.git] / webcit / bbsview_renderer.c
index 793210282b27eec8ac5ec89bbf822d81e93a6958..d06045d0bdeddafe264f7a0333860df8d3827490 100644 (file)
@@ -1,34 +1,27 @@
 /* 
- * $Id$
- *
  * BBS View renderer module for WebCit
  *
  * Note: we briefly had a dynamic UI for this.  I thought it was cool, but
  * it was not received well by the user community.  If you want to play
- * with it, go get r8256 of bbsview_renderer.c and have fun.
- *
- * Copyright (c) 1996-2010 by the citadel.org team
+ * with it, go get commit dcf99fe61379b78436c387ea3f89ebfd4ffaf635 of
+ * bbsview_renderer.c and have fun.
  *
- *  This program is free software; you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License as published by
- *  the Free Software Foundation; either version 3 of the License, or
- *  (at your option) any later version.
+ * Copyright (c) 1996-2012 by the citadel.org team
  *
- *  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.
+ * This program is open source software.  You can redistribute it and/or
+ * modify it under the terms of the GNU General Public License, version 3.
  *
- *  You should have received a copy of the GNU General Public License
- *  along with this program; if not, write to the Free Software
- *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ * 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.
  */
 
 #define RANGE 5
 
 #include "webcit.h"
-#include "webserver.h"
-#include "groupdav.h"
+
+#include "dav.h"
 
 /*
  * Data which gets passed around between the various functions in this module
@@ -40,6 +33,8 @@ struct bbsview {
        long lastseen;          /* The number of the last seen message in this room */
        int alloc_msgs;         /* Currently allocated size of array */
        int requested_page;     /* Which page number did the user request? */
+       int num_pages;          /* Total number of pages in this room */
+       long start_reading_at;  /* Start reading at the page containing this message */
 };
 
 
@@ -54,13 +49,15 @@ long bbsview_get_last_seen(void)
        serv_puts("GTSN");
        serv_getln(buf, sizeof buf);
        if (buf[0] == '2') {
+               char *colon_pos;
+               char *comma_pos;
 
-               char *comma_pos = strchr(buf, ',');     /* kill first comma and everything to its right */
+               comma_pos = strchr(buf, ',');   /* kill first comma and everything to its right */
                if (comma_pos) {
                        *comma_pos = 0;
                }
 
-               char *colon_pos = strchr(buf, ':');     /* kill first colon and everything to its left */
+               colon_pos = strchr(buf, ':');   /* kill first colon and everything to its left */
                if (colon_pos) {
                        strcpy(buf, ++colon_pos);
                }
@@ -78,20 +75,33 @@ int bbsview_GetParamsGetServerCall(SharedMessageStatus *Stat,
                                   void **ViewSpecific, 
                                   long oper, 
                                   char *cmd, 
-                                  long len)
+                                  long len,
+                                  char *filter,
+                                  long flen)
 {
        struct bbsview *BBS = malloc(sizeof(struct bbsview));
        memset(BBS, 0, sizeof(struct bbsview));
        *ViewSpecific = BBS;
 
-       Stat->startmsg = -1;                                    /* not used here */
+       Stat->startmsg = (-1);                                  /* not used here */
        Stat->sortit = 1;                                       /* not used here */
        Stat->num_displayed = DEFAULT_MAXMSGS;                  /* not used here */
        BBS->requested_page = 0;
        BBS->lastseen = bbsview_get_last_seen();
+       BBS->start_reading_at = 0;
 
-       /* If a specific page was requested, make sure we go there */
-       if (havebstr("page")) {
+       /* By default, the requested page is the first one. */
+       if (havebstr("start_reading_at")) {
+               BBS->start_reading_at = lbstr("start_reading_at");
+               BBS->requested_page = (-4);
+       }
+
+       /* However, if we are asked to start with a specific message number, make sure
+        * we start on the page containing that message
+        */
+
+       /* Or, if a specific page was requested, make sure we go there */
+       else if (havebstr("page")) {
                BBS->requested_page = ibstr("page");
        }
 
@@ -167,20 +177,66 @@ int bbsview_RenderView_or_Tail(SharedMessageStatus *Stat,
        const StrBuf *Mime;
        int start_index = 0;
        int end_index = 0;
+       int go_to_the_very_end = 0;
 
        if (Stat->nummsgs > 0) {
-               lprintf(9, "sorting %d messages\n", BBS->num_msgs);
+               syslog(LOG_DEBUG, "sorting %d messages\n", BBS->num_msgs);
                qsort(BBS->msgs, (size_t)(BBS->num_msgs), sizeof(long), bbsview_sortfunc);
        }
 
-       /* If the requested page number is "whichever page on which new messages start"
-        * then change that to an actual page number now.
+       if ((BBS->num_msgs % Stat->maxmsgs) == 0) {
+               BBS->num_pages = BBS->num_msgs / Stat->maxmsgs;
+       }
+       else {
+               BBS->num_pages = (BBS->num_msgs / Stat->maxmsgs) + 1;
+       }
+
+       /* If the requested page number is -4,
+        * it means "whichever page on which msg#xxxxx starts"
+        * Change to the page number which contains that message.
+        */
+       if (BBS->requested_page == (-4)) {
+               if (BBS->num_msgs == 0) {
+                       BBS->requested_page = 0;
+               }
+               else {
+                       for (i=0; i<BBS->num_msgs; ++i) {
+                               if (
+                                       (BBS->msgs[i] >= BBS->start_reading_at)
+                                       && (BBS->requested_page == (-4))
+                               ) {
+                                       BBS->requested_page = (i / Stat->maxmsgs) ;
+                               }
+                       }
+               }
+       }
+
+       /* If the requested page number is -3,
+        * it means "whichever page on which new messages start"
+        * Change that to an actual page number now.
         */
        if (BBS->requested_page == (-3)) {
                if (BBS->num_msgs == 0) {
+                       /*
+                        * The room is empty; just start at the top and leave it there.
+                        */
                        BBS->requested_page = 0;
                }
+               else if (
+                       (BBS->num_msgs > 0) 
+                       && (BBS->lastseen <= BBS->msgs[0])
+               ) {
+                       /*
+                        * All messages are new; this is probably the user's first visit to the room,
+                        * so start at the last page instead of showing ancient history.
+                        */
+                       BBS->requested_page = BBS->num_pages - 1;
+                       go_to_the_very_end = 1;
+               }
                else {
+                       /*
+                        * Some messages are old and some are new.  Go to the start of new messages.
+                        */
                        for (i=0; i<BBS->num_msgs; ++i) {
                                if (
                                        (BBS->msgs[i] > BBS->lastseen)
@@ -192,6 +248,22 @@ int bbsview_RenderView_or_Tail(SharedMessageStatus *Stat,
                }
        }
 
+       /* Still set to -3 ?  If so, that probably means that there are no new messages,
+        * so we'll go to the *end* of the final page.
+        */
+       if (BBS->requested_page == (-3)) {
+               if (BBS->num_msgs == 0) {
+                       BBS->requested_page = 0;
+               }
+               else {
+                       BBS->requested_page = BBS->num_pages - 1;
+               }
+       }
+
+       /* keep the requested page within bounds */
+       if (BBS->requested_page < 0) BBS->requested_page = 0;
+       if (BBS->requested_page >= BBS->num_pages) BBS->requested_page = BBS->num_pages - 1;
+
        start_index = BBS->requested_page * Stat->maxmsgs;
        if (start_index < 0) start_index = 0;
        end_index = start_index + Stat->maxmsgs - 1;
@@ -206,23 +278,44 @@ int bbsview_RenderView_or_Tail(SharedMessageStatus *Stat,
                                        (BBS->msgs[i] > BBS->lastseen)
                                        && ( (i == 0) || (BBS->msgs[i-1] <= BBS->lastseen) )
                                ) {
-                                       wc_printf("<a name=\"newmsgs\">");
-                                       wc_printf("** FIXME new msgs start here **<br>\n");
+                                       /* new messages start here */
+                                       do_template("start_of_new_msgs");
+                                       if (!go_to_the_very_end) {
+                                               StrBufAppendPrintf(WC->trailing_javascript, "location.href=\"#newmsgs\";\n");
+                                       }
                                }
                                if (BBS->msgs[i] > 0L) {
-                                       read_message(WC->WBuf, HKEY("view_message"), BBS->msgs[i], NULL, &Mime);
+                                       read_message(WC->WBuf, HKEY("view_message"), BBS->msgs[i], NULL, &Mime, NULL);
+                               }
+                               if (
+                                       (i == (BBS->num_msgs - 1))
+                                       && (BBS->msgs[i] <= BBS->lastseen)
+                               ) {
+                                       /* no new messages */
+                                       do_template("no_new_msgs");
+                                       if (!go_to_the_very_end) {
+                                               StrBufAppendPrintf(WC->trailing_javascript, "location.href=\"#nonewmsgs\";\n");
+                                       }
                                }
                        }
                }
 
                else if ( (seq == 0) || (seq == 2) ) {
+                       int first;
+                       int last;
                        /* Display the selecto-bar with the page numbers */
 
                        wc_printf("<div class=\"moreprompt\">");
+                       if (seq == 2) {
+                               wc_printf("<a name=\"end_of_msgs\">");
+                       }
                        wc_printf(_("Go to page: "));
+                       if (seq == 2) {
+                               wc_printf("</a>");
+                       }
 
-                       int first = 0;
-                       int last = ( (Stat->maxmsgs > 0) ? (BBS->num_msgs / Stat->maxmsgs) : 0 );
+                       first = 0;
+                       last = BBS->num_pages - 1;
 
                        for (i=0; i<=last; ++i) {
 
@@ -246,7 +339,12 @@ int bbsview_RenderView_or_Tail(SharedMessageStatus *Stat,
                                                wc_printf("[");
                                        }
                                        else {
-                                               wc_printf("<a href=\"readfwd?page=%d\">", i);
+                                               wc_printf("<a href=\"readfwd?go=");
+                                               urlescputs(ChrPtr(WC->CurRoom.name));
+                                               wc_printf("?start_reading_at=%ld\">",
+                                                       BBS->msgs[i*Stat->maxmsgs]
+                                               );
+                                               /* wc_printf("?page=%d\">", i); */
                                                wc_printf("<span class=\"moreprompt_link\">");
                                        }
                                        if (
@@ -262,7 +360,7 @@ int bbsview_RenderView_or_Tail(SharedMessageStatus *Stat,
                                                wc_printf(_("Last"));
                                        }
                                        else {
-                                               wc_printf("%d", i + 1); // change to one-based for display
+                                               wc_printf("%d", i + 1); /* change to one-based for display */
                                        }
                                        if (i == BBS->requested_page) {
                                                wc_printf("]");
@@ -286,6 +384,9 @@ int bbsview_RenderView_or_Tail(SharedMessageStatus *Stat,
                }
        }
 
+       if (go_to_the_very_end) {
+               StrBufAppendPrintf(WC->trailing_javascript, "location.href=\"#end_of_msgs\";\n");
+       }
        return(0);
 }
 
@@ -312,9 +413,11 @@ InitModule_BBSVIEWRENDERERS
                VIEW_BBS,
                bbsview_GetParamsGetServerCall,
                NULL,
+               NULL,
                NULL, 
                bbsview_LoadMsgFromServer,
                bbsview_RenderView_or_Tail,
-               bbsview_Cleanup
+               bbsview_Cleanup,
+               NULL
        );
 }