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/*
* Purple's oscar protocol plugin
* This file is the legal property of its developers.
* Please see the AUTHORS file distributed alongside this file.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111-1301 USA
*/
/*
* A little bit of this
* A little bit of that
* It started with a kiss
* Now we're up to bat
*/
#include "oscar.h"
#include <ctype.h>
#ifdef _WIN32
#include "win32dep.h"
#endif
/*
* Tokenizing functions. Used to portably replace strtok/sep.
* -- DMP.
*
*/
/* TODO: Get rid of this and use glib functions */
int
aimutil_tokslen(char *toSearch, int theindex, char dl)
{
int curCount = 1;
char *next;
char *last;
int toReturn;
last = toSearch;
next = strchr(toSearch, dl);
while(curCount < theindex && next != NULL) {
curCount++;
last = next + 1;
next = strchr(last, dl);
}
if ((curCount < theindex) || (next == NULL))
toReturn = strlen(toSearch) - (curCount - 1);
else
toReturn = next - toSearch - (curCount - 1);
return toReturn;
}
int
aimutil_itemcnt(char *toSearch, char dl)
{
int curCount;
char *next;
curCount = 1;
next = strchr(toSearch, dl);
while(next != NULL) {
curCount++;
next = strchr(next + 1, dl);
}
return curCount;
}
char *
aimutil_itemindex(char *toSearch, int theindex, char dl)
{
int curCount;
char *next;
char *last;
char *toReturn;
curCount = 0;
last = toSearch;
next = strchr(toSearch, dl);
while (curCount < theindex && next != NULL) {
curCount++;
last = next + 1;
next = strchr(last, dl);
}
next = strchr(last, dl);
if (curCount < theindex) {
toReturn = g_malloc(sizeof(char));
*toReturn = '\0';
} else {
if (next == NULL) {
toReturn = g_malloc((strlen(last) + 1) * sizeof(char));
strcpy(toReturn, last);
} else {
toReturn = g_malloc((next - last + 1) * sizeof(char));
memcpy(toReturn, last, (next - last));
toReturn[next - last] = '\0';
}
}
return toReturn;
}
/**
* Calculate the checksum of a given icon.
*/
guint16
aimutil_iconsum(const guint8 *buf, int buflen)
{
guint32 sum;
int i;
for (i=0, sum=0; i+1<buflen; i+=2)
sum += (buf[i+1] << 8) + buf[i];
if (i < buflen)
sum += buf[i];
sum = ((sum & 0xffff0000) >> 16) + (sum & 0x0000ffff);
return sum;
}
/**
* Check if the given screen name is a valid AIM screen name.
* Example: BobDole
* Example: Henry_Ford@mac.com
* Example: 1KrazyKat@example.com
*
* @return TRUE if the screen name is valid, FALSE if not.
*/
static gboolean
aim_snvalid_aim(const char *sn)
{
int i;
if (purple_email_is_valid(sn))
return TRUE;
/* Normal AIM screen names can't start with a number */
if (isdigit(sn[0]))
return FALSE;
for (i = 0; sn[i] != '\0'; i++) {
if (!isalnum(sn[i]) && (sn[i] != ' '))
return FALSE;
}
return TRUE;
}
/**
* Check if the given screen name is a valid ICQ screen name.
* Example: 1234567
*
* @return TRUE if the screen name is valid, FALSE if not.
*/
gboolean
aim_snvalid_icq(const char *sn)
{
int i;
for (i = 0; sn[i] != '\0'; i++) {
if (!isdigit(sn[i]))
return FALSE;
}
return TRUE;
}
/**
* Check if the given screen name is a valid SMS screen name.
* Example: +19195551234
*
* @return TRUE if the screen name is valid, FALSE if not.
*/
gboolean
aim_snvalid_sms(const char *sn)
{
int i;
if (sn[0] != '+')
return FALSE;
for (i = 1; sn[i] != '\0'; i++) {
if (!isdigit(sn[i]))
return FALSE;
}
return TRUE;
}
/**
* Check if the given screen name is a valid oscar screen name.
*
* @return TRUE if the screen name is valid, FALSE if not.
*/
gboolean
aim_snvalid(const char *sn)
{
if ((sn == NULL) || (*sn == '\0'))
return FALSE;
return aim_snvalid_icq(sn) || aim_snvalid_sms(sn) || aim_snvalid_aim(sn);
}
/**
* This takes two screen names and compares them using the rules
* on screen names for AIM/AOL. Mainly, this means case and space
* insensitivity (all case differences and spacing differences are
* ignored, with the exception that screen names can not start with
* a space).
*
* @return 0 if equal, non-0 if different
*/
/* TODO: Do something different for email addresses. */
int
aim_sncmp(const char *sn1, const char *sn2)
{
if ((sn1 == NULL) || (sn2 == NULL))
return -1;
do {
while (*sn2 == ' ')
sn2++;
while (*sn1 == ' ')
sn1++;
if (toupper(*sn1) != toupper(*sn2))
return 1;
} while ((*sn1 != '\0') && sn1++ && sn2++);
return 0;
}
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