support utf-8 encoding with msn

PR:		44740
Submitted by:	Cheng-Lung Sung <AlanSung@alansung.dragon2.net>
Tested with:	yinjieh@csie.nctu.edu.tw

2 files changed, 200 insertions, 1 deletions

diff --git a/net-im/centericq/Makefile b/net-im/centericq/Makefile
index 4ce84dac1b1b..68062b309f25 100644
--- a/net-im/centericq/Makefile
+++ b/net-im/centericq/Makefile
@@ -8,7 +8,7 @@
 
 PORTNAME=	centericq
 PORTVERSION=	4.8.6
-PORTREVISION=	0
+PORTREVISION=	1
 CATEGORIES=	net
 MASTER_SITES=	http://konst.org.ua/download/
 
diff --git a/net-im/centericq/files/patch-msn_commands.cc b/net-im/centericq/files/patch-msn_commands.cc
new file mode 100644
index 000000000000..00838c3e63cb
--- /dev/null
+++ b/net-im/centericq/files/patch-msn_commands.cc
@@ -0,0 +1,199 @@
+--- libmsn-0.1/msn_commands.cc.orig	Wed Oct 16 18:20:59 2002
++++ libmsn-0.1/msn_commands.cc	Wed Oct 30 16:44:55 2002
+@@ -30,7 +30,10 @@
+ #include <sys/socket.h>
+ #include <errno.h>
+ #include <netdb.h>
+-
++#define HAVE_ICONV_H 1
++#if HAVE_ICONV_H
++#include <iconv.h>
++#endif
+ #include "libmsn.h"
+ #include "msn_commands.h"
+ #include "parse_utils.h"
+@@ -426,6 +429,128 @@
+     return 0;
+ }
+ 
++#if HAVE_ICONV_H
++/* 
++** Name:    safe_iconv
++** Purpose: 'Fault-tolerant' version if iconv. Replaces invalid seq with '?'
++** Input:   see iconv manpage
++*/
++static int safe_iconv( iconv_t handle,
++	     const char **inbuf, size_t *inbytesleft,
++	     char **outbuf, size_t *outbytesleft)
++{
++    int ret;
++    while (*inbytesleft) {
++	 ret = iconv( handle, inbuf, inbytesleft,
++		outbuf, outbytesleft);
++	if (!*inbytesleft || !*outbytesleft)
++	    return ret;
++	/*got invalid seq - so replace it with '?' */
++	**outbuf = '?'; (*outbuf)++; (*outbytesleft)--;
++	(*inbuf)++; (*inbytesleft)--;
++    }
++    return ret;
++}
++
++/* charset name cache buffer */
++char loc_charset[32];
++
++#define DEFAULT_CHARSET "ISO-8859-1"
++
++/*
++** Name:    guess_current_locale_charset
++** Purpose: Try to guess default charset for the current locale
++** Output:  charset name
++** FIXME:   is there more right method for guessing charset
++	    than scanning $LANG ?
++*/
++static char* guess_current_locale_charset()
++{
++    char *lang, *ch;
++    /* Return previously learned charset */
++    return "big5";
++    if (loc_charset[0])
++	return loc_charset;
++
++    lang = getenv("LANG");
++    ch = strrchr( lang, '.' ) + 1;
++    if (!ch)
++	strcpy( loc_charset, DEFAULT_CHARSET );
++    else {
++	iconv_t pt;
++	strncpy( loc_charset, ch, sizeof(loc_charset) );
++	/* try to open iconv handle using guessed charset */
++	if ( (pt = iconv_open( loc_charset, loc_charset )) == (iconv_t)(-1) )
++	{
++	    strcpy( loc_charset, DEFAULT_CHARSET );
++	} else {
++	    iconv_close(pt);
++	};
++	
++    }
++
++    return loc_charset;
++}
++#endif /* HAVE_ICONV_H */
++
++/*
++** Name:    Str2Utf8
++** Purpose: convert a string in UTF-8 format
++** Input:   inbuf     - the string to convert
++** Output:  a new string in UTF-8 format
++*/
++static char *StrToUtf8( const char *inbuf )
++{
++#if HAVE_ICONV_H
++    size_t length = strlen( inbuf );
++    size_t outmaxlength = length * 4; /* FIXME: Is x4 multiplier enoght? */
++    char *outbuf = (char*) malloc( outmaxlength + 1 );
++    char *outbuf_save = outbuf;
++    int ret;
++
++    iconv_t handle = iconv_open( "utf-8", guess_current_locale_charset() );
++    ret = safe_iconv( handle, (const char **) &inbuf, &length, &outbuf, &outmaxlength );
++    
++    iconv_close( handle );
++
++    return outbuf_save;
++#else
++    char *outbuf = strdup( inbuf );
++    char *outbuf_save = outbuf;
++    /* Clear eight bit */
++    for (; *outbuf; ++outbuf)
++        *outbuf &= 0x7F;
++    return outbuf_save;
++#endif
++}
++ 
++/*
++** Name:    Utf8ToStr
++** Purpose: revert UTF-8 string conversion
++** Input:   inbuf  - the string to decode
++** Output:  a new decoded string
++*/
++static char *Utf8ToStr( char *inbuf )
++{
++#if HAVE_ICONV_H
++    size_t length = strlen( inbuf );
++    size_t outmaxlength = length;
++    char *outbuf = (char*) malloc( outmaxlength + 1 );
++    char *outbuf_save = outbuf;
++    int ret;
++
++    iconv_t handle = iconv_open( guess_current_locale_charset(), "utf-8" );
++
++    ret = safe_iconv( handle, (const char **) &inbuf, &length, &outbuf, &outmaxlength );
++    
++    iconv_close( handle );
++
++    return outbuf_save;
++#else
++    return strdup( inbuf );
++#endif
++}
++
+ /*
+ ** Name:    HandleMessage
+ ** Purpose: This function handles an instant message from either the server
+@@ -440,6 +565,7 @@
+ {
+     MSN_InstantMessage newIm;
+     char *message;
++    char *decodedIm;
+     char *mimeInfo, *im;
+     int  length, nread; 
+     struct timeval t;
+@@ -448,6 +574,8 @@
+     message = NULL;
+     mimeInfo = NULL;
+     im = NULL; 
++    decodedIm = NULL;
++
+ 	
+     if (numOfArgs != 4)
+ 	return -1;
+@@ -470,13 +598,15 @@
+  
+     if (mimeInfo != NULL) {
+ 	if (strstr(mimeInfo, "text/plain") != NULL) {
++
++	    decodedIm = Utf8ToStr( im );
+ 	    newIm.year = 0;
+ 	    newIm.month = 0;
+ 	    newIm.day = 0;
+ 	    newIm.hour = 0;
+ 	    newIm.minute = 0;
+ 	    newIm.sec = 0;
+-	    newIm.msg = im;
++	    newIm.msg = decodedIm;
+ 	    RemoveHotmail(args[1], &newIm.sender);
+ 	    newIm.friendlyhandle = args[2];
+ 	    newIm.fd = conn->fd;
+@@ -571,15 +701,18 @@
+ int SendMessage(MSN_Conn *conn, const char *message)
+ {
+     char   *commandLine;
++    char   *UTFmessage;
+     int    length;
+ 
+     if (!message)
+ 	return -1;
++    UTFmessage = NULL;
+ 
+-    commandLine = (char *)malloc(strlen(MIME_HEADER)+strlen(message)+25);
++    UTFmessage = StrToUtf8( message );
++    commandLine = (char *)malloc(strlen(MIME_HEADER)+strlen(UTFmessage)+25);
+     length = sprintf(commandLine, "%s %lu N %d\r\n%s%s", CommandString[MSG],
+-		     TrID++, strlen(message)+strlen(MIME_HEADER), MIME_HEADER, 
+-		     message);
++		     TrID++, strlen(UTFmessage)+strlen(MIME_HEADER), MIME_HEADER, 
++		     UTFmessage);
+ 
+     write(conn->fd, commandLine, length);
+     free(commandLine);