/********************************************************************\
* BitlBee -- An IRC to other IM-networks gateway *
* *
* Copyright 2002-2010 Wilmer van der Gaast and others *
\********************************************************************/
/* Some stuff that doesn't belong anywhere else. */
/*
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 2 of the License, or
(at your option) any later version.
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 with
the Debian GNU/Linux distribution in /usr/share/common-licenses/GPL;
if not, write to the Free Software Foundation, Inc., 51 Franklin St.,
Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "bitlbee.h"
char *set_eval_timezone(set_t *set, char *value)
{
char *s;
if (strcmp(value, "local") == 0 ||
strcmp(value, "gmt") == 0 || strcmp(value, "utc") == 0) {
return value;
}
/* Otherwise: +/- at the beginning optional, then one or more numbers,
possibly followed by a colon and more numbers. Don't bother bound-
checking them since users are free to shoot themselves in the foot. */
s = value;
if (*s == '+' || *s == '-') {
s++;
}
/* \d+ */
if (!g_ascii_isdigit(*s)) {
return SET_INVALID;
}
while (*s && g_ascii_isdigit(*s)) {
s++;
}
/* EOS? */
if (*s == '\0') {
return value;
}
/* Otherwise, colon */
if (*s != ':') {
return SET_INVALID;
}
s++;
/* \d+ */
if (!g_ascii_isdigit(*s)) {
return SET_INVALID;
}
while (*s && g_ascii_isdigit(*s)) {
s++;
}
/* EOS */
return *s == '\0' ? value : SET_INVALID;
}
char *irc_format_timestamp(irc_t *irc, time_t msg_ts)
{
time_t now_ts = time(NULL);
struct tm now, msg;
char *set;
/* If the timestamp is <= 0 or less than a minute ago, discard it as
it doesn't seem to add to much useful info and/or might be noise. */
if (msg_ts <= 0 || msg_ts > now_ts - 60) {
return NULL;
}
set = set_getstr(&pre { line-height: 125%; }
td.linenos .normal { color: inherit; background-color: transparent; padding-left: 5px; padding-right: 5px; }
span.linenos { color: inherit; background-color: transparent; padding-left: 5px; padding-right: 5px; }
td.linenos .special { color: #000000; background-color: #ffffc0; padding-left: 5px; padding-right: 5px; }
span.linenos.special { color: #000000; background-color: #ffffc0; padding-left: 5px; padding-right: 5px; }
.highlight .hll { background-color: #ffffcc }
.highlight .c { color: #888888 } /* Comment */
.highlight .err { color: #a61717; background-color: #e3d2d2 } /* Error */
.highlight .k { color: #008800; font-weight: bold } /* Keyword */
.highlight .ch { color: #888888 } /* Comment.Hashbang */
.highlight .cm { color: #888888 } /* Comment.Multiline */
.highlight .cp { color: #cc0000; font-weight: bold } /* Comment.Preproc */
.highlight .cpf { color: #888888 } /* Comment.PreprocFile */
.highlight .c1 { color: #888888 } /* Comment.Single */
.highlight .cs { color: #cc0000; font-weight: bold; background-color: #fff0f0 } /* Comment.Special */
.highlight .gd { color: #000000; background-color: #ffdddd } /* Generic.Deleted */
.highlight .ge { font-style: italic } /* Generic.Emph */
.highlight .ges { font-weight: bold; font-style: italic } /* Generic.EmphStrong */
.highlight .gr { color: #aa0000 } /* Generic.Error */
.highlight .gh { color: #333333 } /* Generic.Heading */
.highlight .gi { color: #000000; background-color: #ddffdd } /* Generic.Inserted */
.highlight .go { color: #888888 } /* Generic.Output */
.highlight .gp { color: #555555 } /* Generic.Prompt */
.highlight .gs { font-weight: bold } /* Generic.Strong */
.highlight .gu { color: #666666 } /* Generic.Subheading */
.highlight .gt { color: #aa0000 } /* Generic.Traceback */
.highlight .kc { color: #008800; font-weight: bold } /* Keyword.Constant */
.highlight .kd { color: #008800; font-weight: bold } /* Keyword.Declaration */
.highlight .kn { color: #008800; font-weight: bold } /* Keyword.Namespace */
.highlight .kp { color: #008800 } /* Keyword.Pseudo */
.highlight .kr { color: #008800; font-weight: bold } /* Keyword.Reserved */
.highlight .kt { color: #888888; font-weight: bold } /* Keyword.Type */
.highlight .m { color: #0000DD; font-weight: bold } /* Literal.Number */
.highlight .s { color: #dd2200; background-color: #fff0f0 } /* Literal.String */
.highlight .na { color: #336699 } /* Name.Attribute */
.highlight .nb { color: #003388 } /* Name.Builtin */
.highlight .nc { color: #bb0066; font-weight: bold } /* Name.Class */
.highlight .no { color: #003366; font-weight: bold } /* Name.Constant */
.highlight .nd { color: #555555 } /* Name.Decorator */
.highlight .ne { color: #bb0066; font-weight: bold } /* Name.Exception */
.highlight .nf { color: #0066bb; font-weight: bold } /* Name.Function */
.highlight .nl { color: #336699; font-style: italic } /* Name.Label */
.highlight .nn { color: #bb0066; font-weight: bold } /* Name.Namespace */
.highlight .py { color: #336699; font-weight: bold } /* Name.Property */
.highlight .nt { color: #bb0066; font-weight: bold } /* Name.Tag */
.highlight .nv { color: #336699 } /* Name.Variable */
.highlight .ow { color: #008800 } /* Operator.Word */
.highlight .w { color: #bbbbbb } /* Text.Whitespace */
.highlight .mb { color: #0000DD; font-weight: bold } /* Literal.Number.Bin */
.highlight .mf { color: #0000DD; font-weight: bold } /* Literal.Number.Float */
.highlight .mh { color: #0000DD; font-weight: bold } /* Literal.Number.Hex */
.highlight .mi { color: #0000DD; font-weight: bold } /* Literal.Number.Integer */
.highlight .mo { color: #0000DD; font-weight: bold } /* Literal.Number.Oct */
.highlight .sa { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Affix */
.highlight .sb { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Backtick */
.highlight .sc { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Char */
.highlight .dl { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Delimiter */
.highlight .sd { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Doc */
.highlight .s2 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Double */
.highlight .se { color: #0044dd; background-color: #fff0f0 } /* Literal.String.Escape */
.highlight .sh { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Heredoc */
.highlight .si { color: #3333bb; background-color: #fff0f0 } /* Literal.String.Interpol */
.highlight .sx { color: #22bb22; background-color: #f0fff0 } /* Literal.String.Other */
.highlight .sr { color: #008800; background-color: #fff0ff } /* Literal.String.Regex */
.highlight .s1 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Single */
.highlight .ss { color: #aa6600; background-color: #fff0f0 } /* Literal.String.Symbol */
.highlight .bp { color: #003388 } /* Name.Builtin.Pseudo */
.highlight .fm { color: #0066bb; font-weight: bold } /* Name.Function.Magic */
.highlight .vc { color: #336699 } /* Name.Variable.Class */
.highlight .vg { color: #dd7700 } /* Name.Variable.Global */
.highlight .vi { color: #3333bb } /* Name.Variable.Instance */
.highlight .vm { color: #336699 } /* Name.Variable.Magic */
.highlight .il { color: #0000DD; font-weight: bold } /* Literal.Number.Integer.Long */ /********************************************************************\
* BitlBee -- An IRC to other IM-networks gateway *
* *
* Copyright 2002-2006 Wilmer van der Gaast and others *
\********************************************************************/
/*
* Various utility functions. Some are copied from Gaim to support the
* IM-modules, most are from BitlBee.
*
* Copyright (C) 1998-1999, Mark Spencer <markster@marko.net>
* (and possibly other members of the Gaim team)
* Copyright 2002-2006 Wilmer van der Gaast <wilmer@gaast.net>
*/
/*
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 2 of the License, or
(at your option) any later version.
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 with
the Debian GNU/Linux distribution in /usr/share/common-licenses/GPL;
if not, write to the Free Software Foundation, Inc., 59 Temple Place,
Suite 330, Boston, MA 02111-1307 USA
*/
#define BITLBEE_CORE
#include "nogaim.h"
#include "base64.h"
#include "md5.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <glib.h>
#include <time.h>
#ifdef HAVE_RESOLV_A
#include <arpa/nameser.h>
#include <resolv.h>
#endif
#include "md5.h"
#include "ssl_client.h"
void strip_linefeed(gchar *text)
{
int i, j;
gchar *text2 = g_malloc(strlen(text) + 1);
for (i = 0, j = 0; text[i]; i++)
if (text[i] != '\r')
text2[j++] = text[i];
text2[j] = '\0';
strcpy(text, text2);
g_free(text2);
}
time_t get_time(int year, int month, int day, int hour, int min, int sec)
{
struct tm tm;
memset(&tm, 0, sizeof(struct tm));
tm.tm_year = year - 1900;
tm.tm_mon = month - 1;
tm.tm_mday = day;
tm.tm_hour = hour;
tm.tm_min = min;
tm.tm_sec = sec >= 0 ? sec : time(NULL) % 60;
return mktime(&tm);
}
typedef struct htmlentity
{
char code[7];
char is[3];
} htmlentity_t;
static const htmlentity_t ent[] =
{
{ "lt", "<" },
{ "gt", ">" },
{ "amp", "&" },
{ "apos", "'" },
{ "quot", "\"" },
{ "aacute", "á" },
{ "eacute", "é" },
{ "iacute", "é" },
{ "oacute", "ó" },
{ "uacute", "ú" },
{ "agrave", "à" },
{ "egrave", "è" },
{ "igrave", "ì" },
{ "ograve", "ò" },
{ "ugrave", "ù" },
{ "acirc", "â" },
{ "ecirc", "ê" },
{ "icirc", "î" },
{ "ocirc", "ô" },
{ "ucirc", "û" },
{ "auml", "ä" },
{ "euml", "ë" },
{ "iuml", "ï" },
{ "ouml", "ö" },
{ "uuml", "ü" },
{ "nbsp", " " },
{ "", "" }
};
void strip_html( char *in )
{
char *start = in;
char *out = g_malloc( strlen( in ) + 1 );
char *s = out, *cs;
int i, matched;
memset( out, 0, strlen( in ) + 1 );
while( *in )
{
if( *in == '<' && ( isalpha( *(in+1) ) || *(in+1) == '/' ) )
{
/* If in points at a < and in+1 points at a letter or a slash, this is probably
a HTML-tag. Try to find a closing > and continue there. If the > can't be
found, assume that it wasn't a HTML-tag after all. */
cs = in;
while( *in && *in != '>' )
in ++;
if( *in )
{
if( g_strncasecmp( cs+1, "br", 2) == 0 )
*(s++) = '\n';
in ++;
}
else
{
in = cs;
*(s++) = *(in++);
}
}
else if( *in == '&' )
{
cs = ++in;
while( *in && isalpha( *in ) )
in ++;
if( *in == ';' ) in ++;
matched = 0;
for( i = 0; *ent[i].code; i ++ )
if( g_strncasecmp( ent[i].code, cs, strlen( ent[i].code ) ) == 0 )
{
int j;
for( j = 0; ent[i].is[j]; j ++ )
*(s++) = ent[i].is[j];
matched = 1;
break;
}
/* None of the entities were matched, so return the string */
if( !matched )
{
in = cs - 1;
*(s++) = *(in++);
}
}
else
{
*(s++) = *(in++);
}
}
strcpy( start, out );
g_free( out );
}
char *escape_html( const char *html )
{
const char *c = html;
GString *ret;
char *str;
if( html == NULL )
return( NULL );
ret = g_string_new( "" );
while( *c )
{
switch( *c )
{
case '&':
ret = g_string_append( ret, "&" );
break;
case '<':
ret = g_string_append( ret, "<" );
break;
case '>':
ret = g_string_append( ret, ">" );
break;
case '"':
ret = g_string_append( ret, """ );
break;
default:
ret = g_string_append_c( ret, *c );
}
c ++;
}
str = ret->str;
g_string_free( ret, FALSE );
return( str );
}
/* Decode%20a%20file%20name */
void http_decode( char *s )
{
char *t;
int i, j, k;
t = g_new( char, strlen( s ) + 1 );
for( i = j = 0; s[i]; i ++, j ++ )
{
if( s[i] == '%' )
{
if( sscanf( s + i + 1, "%2x", &k ) )
{
t[j] = k;
i += 2;
}
else
{
*t = 0;
break;
}
}
else
{
t[j] = s[i];
}
}
t[j] = 0;
strcpy( s, t );
g_free( t );
}
/* Warning: This one explodes the string. Worst-cases can make the string 3x its original size! */
/* This fuction is safe, but make sure you call it safely as well! */
void http_encode( char *s )
{
char *t;
int i, j;
t = g_strdup( s );
for( i = j = 0; t[i]; i ++, j ++ )
{
/* if( t[i] <= ' ' || ((unsigned char *)t)[i] >= 128 || t[i] == '%' ) */
if( !isalnum( t[i] ) )
{
sprintf( s + j, "%%%02X", ((unsigned char*)t)[i] );
j += 2;
}
else
{
s[j] = t[i];
}
}
s[j] = 0;
g_free( t );
}
/* Strip newlines from a string. Modifies the string passed to it. */
char *strip_newlines( char *source )
{
int i;
for( i = 0; source[i] != '\0'; i ++ )
if( source[i] == '\n' || source[i] == '\r' )
source[i] = ' ';
return source;
}
/* Wrap an IPv4 address into IPv6 space. Not thread-safe... */
char *ipv6_wrap( char *src )
{
static char dst[64];
int i;
for( i = 0; src[i]; i ++ )
if( ( src[i] < '0' || src[i] > '9' ) && src[i] != '.' )
break;
/* Hmm, it's not even an IP... */
if( src[i] )
return src;
g_snprintf( dst, sizeof( dst ), "::ffff:%s", src );
return dst;
}
/* Unwrap an IPv4 address into IPv6 space. Thread-safe, because it's very simple. :-) */
char *ipv6_unwrap( char *src )
{
int i;
if( g_strncasecmp( src, "::ffff:", 7 ) != 0 )
return src;
for( i = 7; src[i]; i ++ )
if( ( src[i] < '0' || src[i] > '9' ) && src[i] != '.' )
break;
/* Hmm, it's not even an IP... */
if( src[i] )
return src;
return ( src + 7 );
}
/* Convert from one charset to another.
from_cs, to_cs: Source and destination charsets
src, dst: Source and destination strings
size: Size if src. 0 == use strlen(). strlen() is not reliable for UNICODE/UTF16 strings though.
maxbuf: Maximum number of bytes to write to dst
Returns the number of bytes written to maxbuf or -1 on an error.
*/
signed int do_iconv( char *from_cs, char *to_cs, char *src, char *dst, size_t size, size_t maxbuf )
{
GIConv cd;
size_t res;
size_t inbytesleft, outbytesleft;
char *inbuf = src;
char *outbuf = dst;
cd = g_iconv_open( to_cs, from_cs );
if( cd == (GIConv) -1 )
return( -1 );
inbytesleft = size ? size : strlen( src );
outbytesleft = maxbuf - 1;
res = g_iconv( cd, &inbuf, &inbytesleft, &outbuf, &outbytesleft );
*outbuf = '\0';
g_iconv_close( cd );
if( res == (size_t) -1 )
return( -1 );
else
return( outbuf - dst );
}
/* A pretty reliable random number generator. Tries to use the /dev/random
devices first, and falls back to the random number generator from libc
when it fails. Opens randomizer devices with O_NONBLOCK to make sure a
lack of entropy won't halt BitlBee. */
void random_bytes( unsigned char *buf, int count )
{
#ifndef _WIN32
static int use_dev = -1;
/* Actually this probing code isn't really necessary, is it? */
if( use_dev == -1 )
{
if( access( "/dev/random", R_OK ) == 0 || access( "/dev/urandom", R_OK ) == 0 )
use_dev = 1;
else
{
use_dev = 0;
srand( ( getpid() << 16 ) ^ time( NULL ) );
}
}
if( use_dev )
{
int fd;
/* At least on Linux, /dev/random can block if there's not
enough entropy. We really don't want that, so if it can't
give anything, use /dev/urandom instead. */
if( ( fd = open( "/dev/random", O_RDONLY | O_NONBLOCK ) ) >= 0 )
if( read( fd, buf, count ) == count )
{
close( fd );
return;
}
close( fd );
/* urandom isn't supposed to block at all, but just to be
sure. If it blocks, we'll disable use_dev and use the libc
randomizer instead. */
if( ( fd = open( "/dev/urandom", O_RDONLY | O_NONBLOCK ) ) >= 0 )
if( read( fd, buf, count ) == count )
{
close( fd );
return;
}
close( fd );
/* If /dev/random blocks once, we'll still try to use it
again next time. If /dev/urandom also fails for some
reason, stick with libc during this session. */
use_dev = 0;
srand( ( getpid() << 16 ) ^ time( NULL ) );
}
if( !use_dev )
#endif
{
int i;
/* Possibly the LSB of rand() isn't very random on some
platforms. Seems okay on at least Linux and OSX though. */
for( i = 0; i < count; i ++ )
buf[i] = rand() & 0xff;
}
}
int is_bool( char *value )
{
if( *value == 0 )
return 0;
if( ( g_strcasecmp( value, "true" ) == 0 ) || ( g_strcasecmp( value, "yes" ) == 0 ) || ( g_strcasecmp( value, "on" ) == 0 ) )
return 1;
if( ( g_strcasecmp( value, "false" ) == 0 ) || ( g_strcasecmp( value, "no" ) == 0 ) || ( g_strcasecmp( value, "off" ) == 0 ) )
return 1;
while( *value )
if( !isdigit( *value ) )
return 0;
else
value ++;
return 1;
}
int bool2int( char *value )
{
int i;
if( ( g_strcasecmp( value, "true" ) == 0 ) || ( g_strcasecmp( value, "yes" ) == 0 ) || ( g_strcasecmp( value, "on" ) == 0 ) )
return 1;
if( ( g_strcasecmp( value, "false" ) == 0 ) || ( g_strcasecmp( value, "no" ) == 0 ) || ( g_strcasecmp( value, "off" ) == 0 ) )
return 0;
if( sscanf( value, "%d", &i ) == 1 )
return i;
return 0;
}
struct ns_srv_reply *srv_lookup( char *service, char *protocol, char *domain )
{
struct ns_srv_reply *reply = NULL;
#ifdef HAVE_RESOLV_A
char name[1024];
unsigned char querybuf[1024];
const unsigned char *buf;
ns_msg nsh;
ns_rr rr;
int i, len, size;
g_snprintf( name, sizeof( name ), "_%s._%s.%s", service, protocol, domain );
if( ( size = res_query( name, ns_c_in, ns_t_srv, querybuf, sizeof( querybuf ) ) ) <= 0 )
return NULL;
if( ns_initparse( querybuf, size, &nsh ) != 0 )
return NULL;
if( ns_parserr( &nsh, ns_s_an, 0, &rr ) != 0 )
return NULL;
size = ns_rr_rdlen( rr );
buf = ns_rr_rdata( rr );
len = 0;
for( i = 6; i < size && buf[i]; i += buf[i] + 1 )
len += buf[i] + 1;
if( i > size )
return NULL;
reply = g_malloc( sizeof( struct ns_srv_reply ) + len );
memcpy( reply->name, buf + 7, len );
for( i = buf[6]; i < len && buf[7+i]; i += buf[7+i] + 1 )
reply->name[i] = '.';
if( i > len )
{
g_free( reply );
return NULL;
}
reply->prio = ( buf[0] << 8 ) | buf[1];
reply->weight = ( buf[2] << 8 ) | buf[3];
reply->port = ( buf[4] << 8 ) | buf[5];
#endif
return reply;
}
/* Word wrapping. Yes, I know this isn't UTF-8 clean. I'm willing to take the risk. */
char *word_wrap( const char *msg, int line_len )
{
GString *ret = g_string_sized_new( strlen( msg ) + 16 );
while( strlen( msg ) > line_len )
{
int i;
/* First try to find out if there's a newline already. Don't
want to add more splits than necessary. */
for( i = line_len; i > 0 && msg[i] != '\n'; i -- );
if( msg[i] == '\n' )
{
g_string_append_len( ret, msg, i + 1 );
msg += i + 1;
continue;
}
for( i = line_len; i > 0; i -- )
{
if( msg[i] == '-' )
{
g_string_append_len( ret, msg, i + 1 );
g_string_append_c( ret, '\n' );
msg += i + 1;
break;
}
else if( msg[i] == ' ' )
{
g_string_append_len( ret, msg, i );
g_string_append_c( ret, '\n' );
msg += i + 1;
break;
}
}
if( i == 0 )
{
g_string_append_len( ret, msg, line_len );
g_string_append_c( ret, '\n' );
msg += line_len;
}
}
g_string_append( ret, msg );
return g_string_free( ret, FALSE );
}
gboolean ssl_sockerr_again( void *ssl )
{
if( ssl )
return ssl_errno == SSL_AGAIN;
else
return sockerr_again();
}
/* Returns values: -1 == Failure (base64-decoded to something unexpected)
0 == Okay
1 == Password doesn't match the hash. */
int md5_verify_password( char *password, char *hash )
{
md5_byte_t *pass_dec = NULL;
md5_byte_t pass_md5[16];
md5_state_t md5_state;
int ret = -1, i;
if( base64_decode( hash, &pass_dec ) == 21 )
{
md5_init( &md5_state );
md5_append( &md5_state, (md5_byte_t*) password, strlen( password ) );
md5_append( &md5_state, (md5_byte_t*) pass_dec + 16, 5 ); /* Hmmm, salt! */
md5_finish( &md5_state, pass_md5 );
for( i = 0; i < 16; i ++ )
{
if( pass_dec[i] != pass_md5[i] )
{
ret = 1;
break;
}
}
/* If we reached the end of the loop, it was a match! */
if( i == 16 )
ret = 0;
}
g_free( pass_dec );
return ret;
}
