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/* $Id: helper.c,v 1.4 2012/10/16 01:29:51 khorben Exp $ */
/* Copyright (c) 2012 Pierre Pronchery <khorben@defora.org> */
/* This file is part of DeforaOS Desktop Mailer */
/* 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, version 3 of the License.
*
* 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
* along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include <ctype.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "../include/Mailer/helper.h"
/* public */
/* functions */
/* mailer_helper_get_email */
char * mailer_helper_get_email(char const * header)
{
char * ret;
size_t len;
char * buf = NULL;
if(header == NULL)
return NULL;
len = strlen(header);
if((ret = malloc(len + 1)) == NULL || (buf = malloc(len + 1)) == NULL)
{
free(buf);
free(ret);
return NULL;
}
if(mailer_helper_is_email(header))
{
strcpy(ret, header);
free(buf);
return ret;
}
if(sscanf(header, "%[^(](%[^)])", ret, buf) == 2
|| sscanf(header, "%[^<]<%[^>]>", buf, ret) == 2)
{
for(len = strlen(ret); len > 0 && isblank(ret[len - 1]); len--)
ret[len - 1] = '\0';
if(mailer_helper_is_email(ret))
{
free(buf);
return ret;
}
}
free(buf);
free(ret);
return NULL;
}
/* mailer_helper_get_name */
char * mailer_helper_get_name(char const * header)
{
char * ret;
size_t len;
char * buf = NULL;
int c;
if(header == NULL)
return NULL;
len = strlen(header);
if((ret = malloc(len + 1)) == NULL || (buf = malloc(len + 1)) == NULL)
{
free(buf);
free(ret);
return NULL;
}
if(sscanf(header, "%[^(](%[^)])", buf, ret) != 2
&& sscanf(header, "%[^<]<%[^>]>", ret, buf) != 2)
{
free(buf);
free(ret);
return NULL;
}
free(buf);
/* right-trim spaces */
for(len = strlen(ret); --len > 0 && isspace((c = ret[len]));
ret[len] = '\0');
/* remove surrounding double quotes */
if((len = strlen(ret)) >= 2)
if(ret[0] == '"' && ret[len - 1] == '"')
{
memmove(ret, &ret[1], len - 2);
ret[len - 2] = '\0';
}
return ret;
}
/* mailer_helper_is_email */
int mailer_helper_is_email(char const * header)
{
size_t i = 0;
int c;
/* FIXME this is neither strict nor standard at the moment */
for(i = 0; (c = header[i]) != '@'; i++)
if(c == '\0')
return 0;
else if(!isalnum(c) && c != '.' && c != '_')
return 0;
for(i++; (c = header[i]) != '\0'; i++)
if(!isalnum(c) && c != '.' && c != '_')
return 0;
return 1;
}