trunk/Src/wptUtil.cpp

/* wptUtil.cpp - Helper functions
 *      Copyright (C) 2005 Timo Schulz
 *
 * This file is part of WinPT.
 *
 * WinPT 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.
 *  
 * WinPT 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 
 * along with WinPT; if not, write to the Free Software Foundation, 
 * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <windows.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <ctype.h>

#include "wptTypes.h"

/* code taken from glibc-2.2.1/sysdeps/generic/strsep.c */
char*
strsep (char **stringp, const char *delim)
{
    char *begin, *end;
    begin = *stringp;

    if (begin == NULL)
        return NULL;

    /* A frequent case is when the delimiter string contains only one
       character.  Here we don't need to call the expensive `strpbrk'
       function and instead work using `strchr'.  */
    if (delim[0] == '\0' || delim[1] == '\0') {
        char ch = delim[0];
        if (ch == '\0')
            end = NULL;
        else {
            if (*begin == ch)
                end = begin;                         
            else if (*begin == '\0')
                end = NULL;
            else
                end = strchr (begin + 1, ch);
        }  
    }
    else /* Find the end of the token.  */
        end = strpbrk (begin, delim);
    if (end) {
        /* Terminate the token and set *STRINGP past NUL character.  */
        *end++ = '\0';
        *stringp = end;
    }
    else
        /* No more delimiters; this is the last token.  */
        *stringp = NULL;

    return begin;
}


/* Like strstr but this version is case in-sentensive. */
const char *
stristr (const char *buf, const char *sub)
{
    const char *t, *s ;
    size_t n;
    size_t buflen = strlen (buf);

    for( t=buf, n=buflen, s=sub ; n ; t++, n-- ) {
        if( toupper(*t) == toupper(*s) ) {
            for( buf=t++, buflen = n--, s++;
                 n && toupper(*t) == toupper(*s); t++, s++, n-- )
                ;
            if( !*s )
                return buf;
            t = buf; n = buflen; s = sub ;
        }
    }
    return NULL ;
}


/* Check if @fname is a valid file name on a Window file system.
   If is_path = 1, @fname is treated as a file name without any separators. */
int
check_file_name (const char *fname, int is_path)
{
    const char *not_allowed = "/*?\"<>|";
    size_t i;

    /* If we are not in path mode (@is_path = 1) we also consider
       path separators as illegal chars. */
    if (!is_path) {
        if (strchr (fname, ':') || strchr (fname, '\\'))
            return -1;
    }

    for (i=0; i < strlen (fname); i++) {
        if (strchr (not_allowed, fname[i]))
            return -1;
    }
    return 0;
}


/* Check if the email address @email only contain valid characters.
   Return 0 on success. */
int
check_email_address (const char *email)
{
    const char *allowed = "@._-%+;";
    size_t i, len = strlen (email);

    if (len < 3 || !strchr (email, '@'))
        return -1;
    for (i=0; i < len; i++) {
        if (isxdigit (email[i]) || isalpha (email[i])
            || strchr (allowed, email[i]))
            continue;
        else
            return -1;
    }
    return 0;
}


/* Return a substring of @str from the position @begin
   to position @end. */
char*
substr (const char *str, unsigned int begin, unsigned int end)
{    
    char *p;
    size_t i, pos;

    if (end > strlen (str) || begin > strlen (str) || (end-begin) < 0)
        return NULL;

    p = new char[end-begin+1];
    if (!p)
        abort ();

    for (i = begin, pos=0; i < end; i++)
        p[pos++] = str[i];
    p[pos] = '\0';
    return p;
}


/* Remove %AB sequences from the input buffer @in
   and store the raw data in @out. */
void
unhexify_buffer (const char *in, char **r_out)
{
    char temp[3], *out;
    size_t len, pos, i=0;

    len = strlen (in);
    out = new char[len+1];
    if (!out)
        abort ();
    memset (out, 0, len+1);
    for (pos = 0; pos < len; pos++) {
        if (in[pos] == '%' && in[pos+1] == '%')
            out[i++] = '%';
        else if (in[pos] == '%') {
            temp[0] = in[++pos];
            temp[1] = in[++pos];
            temp[2] = 0;
            out[i++] = (char)strtoul (temp, NULL, 16);
        }
        else
            out[i++] = in[pos];
    }
    out[i] = 0;
    *r_out = out;
}

char*
m_strdup (const char *str)
{
    char *p = new char[strlen (str)+1];
    if (!p)
        BUG (0);
    strcpy (p, str);
    return p;
}
1	werner	36	/* wptUtil.cpp - Helper functions
2			* Copyright (C) 2005 Timo Schulz
3			*
4			* This file is part of WinPT.
5			*
6			* WinPT is free software; you can redistribute it and/or
7			* modify it under the terms of the GNU General Public License
8			* as published by the Free Software Foundation; either version 2
9			* of the License, or (at your option) any later version.
10			*
11			* WinPT is distributed in the hope that it will be useful,
12			* but WITHOUT ANY WARRANTY; without even the implied warranty of
13			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14			* General Public License for more details.
15			*
16			* You should have received a copy of the GNU General Public License
17			* along with WinPT; if not, write to the Free Software Foundation,
18			* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19			*/
20	twoaday	190
21	werner	36	#ifdef HAVE_CONFIG_H
22			#include <config.h>
23			#endif
24
25	twoaday	271	#include <windows.h>
26	werner	36	#include <string.h>
27	twoaday	214	#include <stdlib.h>
28	werner	36	#include <stdio.h>
29			#include <ctype.h>
30
31	twoaday	271	#include "wptTypes.h"
32
33	werner	36	/* code taken from glibc-2.2.1/sysdeps/generic/strsep.c */
34	twoaday	190	char*
35	werner	36	strsep (char *stringp, const char delim)
36			{
37			char begin, end;
38			begin = *stringp;
39
40			if (begin == NULL)
41			return NULL;
42
43			/* A frequent case is when the delimiter string contains only one
44			character. Here we don't need to call the expensive `strpbrk'
45			function and instead work using `strchr'. */
46			if (delim[0] == '\0' \|\| delim[1] == '\0') {
47			char ch = delim[0];
48			if (ch == '\0')
49			end = NULL;
50			else {
51			if (*begin == ch)
52			end = begin;
53			else if (*begin == '\0')
54			end = NULL;
55			else
56			end = strchr (begin + 1, ch);
57			}
58			}
59			else /* Find the end of the token. */
60			end = strpbrk (begin, delim);
61	twoaday	217	if (end) {
62	werner	36	/* Terminate the token and set STRINGP past NUL character. /
63			*end++ = '\0';
64			*stringp = end;
65			}
66			else
67			/* No more delimiters; this is the last token. */
68			*stringp = NULL;
69
70			return begin;
71			}
72
73
74			/* Like strstr but this version is case in-sentensive. */
75	twoaday	190	const char *
76	werner	36	stristr (const char buf, const char sub)
77			{
78			const char t, s ;
79			size_t n;
80			size_t buflen = strlen (buf);
81
82			for( t=buf, n=buflen, s=sub ; n ; t++, n-- ) {
83			if( toupper(t) == toupper(s) ) {
84			for( buf=t++, buflen = n--, s++;
85			n && toupper(t) == toupper(s); t++, s++, n-- )
86			;
87			if( !*s )
88			return buf;
89			t = buf; n = buflen; s = sub ;
90			}
91			}
92			return NULL ;
93			}
94
95	twoaday	190
96	twoaday	247	/* Check if @fname is a valid file name on a Window file system.
97			If is_path = 1, @fname is treated as a file name without any separators. */
98			int
99			check_file_name (const char *fname, int is_path)
100			{
101			const char not_allowed = "/?\"<>\|";
102			size_t i;
103
104			/* If we are not in path mode (@is_path = 1) we also consider
105			path separators as illegal chars. */
106			if (!is_path) {
107			if (strchr (fname, ':') \|\| strchr (fname, '\\'))
108			return -1;
109			}
110
111			for (i=0; i < strlen (fname); i++) {
112			if (strchr (not_allowed, fname[i]))
113			return -1;
114			}
115			return 0;
116			}
117
118
119	twoaday	190	/* Check if the email address @email only contain valid characters.
120			Return 0 on success. */
121			int
122			check_email_address (const char *email)
123			{
124	twoaday	214	const char *allowed = "@._-%+;";
125	twoaday	260	size_t i, len = strlen (email);
126	twoaday	190
127	twoaday	260	if (len < 3 \|\| !strchr (email, '@'))
128	twoaday	190	return -1;
129	twoaday	260	for (i=0; i < len; i++) {
130	twoaday	225	if (isxdigit (email[i]) \|\| isalpha (email[i])
131	twoaday	190	\|\| strchr (allowed, email[i]))
132			continue;
133			else
134			return -1;
135			}
136			return 0;
137			}
138	twoaday	214
139
140			/* Return a substring of @str from the position @begin
141			to position @end. */
142			char*
143			substr (const char *str, unsigned int begin, unsigned int end)
144			{
145			char *p;
146			size_t i, pos;
147
148			if (end > strlen (str) \|\| begin > strlen (str) \|\| (end-begin) < 0)
149			return NULL;
150
151	twoaday	225	p = new char[end-begin+1];
152	twoaday	214	if (!p)
153			abort ();
154
155			for (i = begin, pos=0; i < end; i++)
156			p[pos++] = str[i];
157			p[pos] = '\0';
158			return p;
159			}
160	twoaday	217
161
162			/* Remove %AB sequences from the input buffer @in
163			and store the raw data in @out. */
164			void
165	twoaday	225	unhexify_buffer (const char in, char *r_out)
166	twoaday	217	{
167	twoaday	225	char temp[3], *out;
168			size_t len, pos, i=0;
169	twoaday	217
170	twoaday	225	len = strlen (in);
171			out = new char[len+1];
172			if (!out)
173	twoaday	217	abort ();
174	twoaday	225	memset (out, 0, len+1);
175			for (pos = 0; pos < len; pos++) {
176	twoaday	217	if (in[pos] == '%' && in[pos+1] == '%')
177	twoaday	225	out[i++] = '%';
178	twoaday	217	else if (in[pos] == '%') {
179			temp[0] = in[++pos];
180			temp[1] = in[++pos];
181			temp[2] = 0;
182	twoaday	225	out[i++] = (char)strtoul (temp, NULL, 16);
183	twoaday	217	}
184			else
185	twoaday	225	out[i++] = in[pos];
186	twoaday	217	}
187	twoaday	225	out[i] = 0;
188			*r_out = out;
189	twoaday	217	}
190	twoaday	271
191			char*
192			m_strdup (const char *str)
193			{
194			char *p = new char[strlen (str)+1];
195			if (!p)
196			BUG (0);
197			strcpy (p, str);
198			return p;
199			}