From 4da726aace2a8f50df30202238f2bc438dcbd365 Mon Sep 17 00:00:00 2001
From: scw <scw@63ad8ddf-47c3-0310-b6dd-a9e9d9715204>
Date: Sun, 1 Aug 2004 12:31:41 +0000
Subject: Ignore IAC when not using telnet. Using stack buffer to enlarge
 screen. Response telnet command stricter.

git-svn-id: http://opensvn.csie.org/pttbbs/branches/scw.telnet@2155 63ad8ddf-47c3-0310-b6dd-a9e9d9715204
---
 mbbsd/io.c   | 18 +++++++++++-------
 mbbsd/term.c | 29 +++++++++++++++--------------
 mbbsd/var.c  |  1 +
 3 files changed, 27 insertions(+), 21 deletions(-)

(limited to 'mbbsd')

diff --git a/mbbsd/io.c b/mbbsd/io.c
index 3282b041..1a623ae6 100644
--- a/mbbsd/io.c
+++ b/mbbsd/io.c
@@ -227,16 +227,18 @@ igetch()
         else                                       //  here is switch for default keys
 	switch (ch) {
         case IAC:
+	    if (use_shell_login_mode)
+		return IAC;
 #ifndef SKIP_TELNET_CONTROL_SIGNAL
-	    {
+	    else {
 		unsigned char cmd[16];
-		ch = dogetch();
-		switch (ch) {
+		cmd[0] = IAC;
+		cmd[1] = ch = dogetch();
+		switch (ch) { /* switch first char after IAC */
 		    case IAC:
 			return IAC; /* escaped IAC */
 
 		    case DO:
-			cmd[0] = IAC;
 			cmd[1] = WONT; /* this always work according to rfc 854 */
 			cmd[2] = dogetch();
 			if(cmd[1] != TELOPT_TTYPE && cmd[1] != TELOPT_NAWS &&
@@ -245,10 +247,12 @@ igetch()
 			break;
 
 		    case DONT:
-			cmd[0] = IAC;
 			cmd[1] = WONT;
 			cmd[2] = dogetch();
-			write(1, cmd, 3);
+			if(cmd[1] == TELOPT_TTYPE || cmd[1] == TELOPT_NAWS ||
+				cmd[1] == TELOPT_ECHO || cmd[1] == TELOPT_SGA)
+			    /* we don't like this, but rfc have us swallow */
+			    write(1, cmd, 3);
 			break;
 
 		    case WILL: case WONT:
@@ -266,7 +270,7 @@ igetch()
 				else if (ch && cmd[i] == SE)
 				    break;
 				else
-				    mode = 0;
+				    ch = 0;
 			    }
 			}
 			if (cmd[2] == TELOPT_NAWS)
diff --git a/mbbsd/term.c b/mbbsd/term.c
index 3d9fd793..0dbe91f4 100644
--- a/mbbsd/term.c
+++ b/mbbsd/term.c
@@ -54,21 +54,23 @@ outcf(int ch)
 
 static inline void
 term_resize(int row, int col){
-    screenline_t   *new_picture;
 
     /* make sure reasonable size */
     row = MAX(24, MIN(100, row));
     col = MAX(80, MIN(200, col));
 
     if (big_picture != NULL && row > t_lines) {
-	new_picture = (screenline_t *) calloc(row, sizeof(screenline_t));
-	if (new_picture == NULL) {
+	screenline_t* buf = alloca(t_lines * sizeof(screenline_t));
+	memcpy(buf, big_picture, t_lines * sizeof(screenline_t));
+	free(big_picture);
+	big_picture = (screenline_t *) calloc(row, sizeof(screenline_t));
+	if (big_picture == NULL) {
 	    syslog(LOG_ERR, "calloc(): %m");
+	    big_picture = (screenline_t*) calloc(t_lines, sizeof(screenline_t));
+	    memcpy(big_picture, buf, t_lines * sizeof(screenline_t));
 	    return;
 	}
-	memcpy(new_picture, big_picture, t_lines * sizeof(screenline_t));
-	free(big_picture);
-	big_picture = new_picture;
+	memcpy(big_picture, buf, t_lines * sizeof(screenline_t));
     }
     t_lines = row;
     t_columns = col;
@@ -120,11 +122,11 @@ char            term_buf[32];
 void
 do_move(int destcol, int destline)
 {
-    char            buf[16], *p;
+    char            buf[16];
 
-    snprintf(buf, sizeof(buf), "\33[%d;%dH", destline + 1, destcol + 1);
-    for (p = buf; *p; p++)
-	ochar(*p);
+    output(buf, 
+	    snprintf(buf, sizeof(buf), "\33[%d;%dH", destline + 1,
+		destcol + 1));
 }
 
 void
@@ -144,11 +146,10 @@ restore_cursor()
 void
 change_scroll_range(int top, int bottom)
 {
-    char            buf[16], *p;
+    char            buf[16];
 
-    snprintf(buf, sizeof(buf), "\33[%d;%dr", top + 1, bottom + 1);
-    for (p = buf; *p; p++)
-	ochar(*p);
+    output(buf,
+	    snprintf(buf, sizeof(buf), "\33[%d;%dr", top + 1, bottom + 1));
 }
 
 void
diff --git a/mbbsd/var.c b/mbbsd/var.c
index 5198b45a..67bb58a7 100644
--- a/mbbsd/var.c
+++ b/mbbsd/var.c
@@ -384,6 +384,7 @@ char            real_name[IDLEN + 1];
 int             local_article;
 
 /* mbbsd.c */
+int             use_shell_login_mode = 0;
 char            fromhost[STRLEN] = "\0";
 char            water_usies = 0;
 FILE           *fp_writelog = NULL;
-- 
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