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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/* url-util.c : utility functions to parse URLs */
/*
* Copyright (C) 1999 Bertrand Guiheneuf <Bertrand.Guiheneuf@inria.fr>
*
* 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
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA
*/
/*
Here we deal with URL following the general scheme:
protocol://user:password@host:port/name
where name is a path-like string (ie dir1/dir2/....)
See rfc1738 for the complete description of
Uniform Ressource Locators
Bertrand. */
#include <ctype.h> /* for isalpha */
#include <stdlib.h> /* for atoi */
#include "url-util.h"
static gboolean
find_protocol(GString *url, GString **protocol, guint *position, gboolean *error)
{
guint i;
gchar *str_url;
gint len_url;
gchar *str_protocol;
str_url = url->str;
len_url = url->len;
*protocol = NULL;
*error = FALSE;
i=*position;
/* find a ':' */
while ( (i<len_url) && (str_url[i] != ':') ) i++;
if (i==len_url) return FALSE;
i++;
/* check if it is followed by a "//" */
if ((i<len_url) && (str_url[i++] == '/'))
if ((i<len_url) && (str_url[i++] == '/'))
{
str_protocol = g_strndup(str_url, i-3);
*protocol = g_string_new(str_protocol);
*position=i;
return TRUE;
}
return FALSE;
}
static gboolean
find_user(GString *url, GString **user, guint *position, gboolean *error)
{
guint i;
guint at_pos;
gchar *str_url;
gint len_url;
gchar *str_user;
str_url = url->str;
len_url = url->len;
*user = NULL;
i=*position;
/* find a '@' */
while ((i<len_url) && (str_url[i] != '@')) i++;
if (i==len_url) return FALSE;
at_pos = i;
i = *position;
/* find a ':' */
while ( (i<at_pos) && (str_url[i] != ':') ) i++;
/* now if i has not been incremented at all, there is no user */
if (i == *position) return FALSE;
str_user = g_strndup(str_url+ *position, i - *position);
*user = g_string_new(str_user);
if (i<at_pos) *position=i+1; /* there was a ':', skip it */
else *position=i;
return TRUE;
}
static gboolean
find_passwd(GString *url, GString **passwd, guint *position, gboolean *error)
{
guint i;
gchar *str_url;
gint len_url;
gchar *str_passwd;
str_url = url->str;
len_url = url->len;
*passwd = NULL;
i=*position;
/* find a '@' */
while ((i<len_url) && (str_url[i] != '@')) i++;
if (i==len_url) return FALSE;
/*i has not been incremented at all, there is no passwd */
if (i == *position) {
*position = i+1;
return FALSE;
}
str_passwd = g_strndup(str_url+ *position, i - *position);
*passwd = g_string_new(str_passwd);
*position=i+1; /* skip it the '@' */
return TRUE;
}
/* to tests this file :
gcc -o test_url_util `glib-config --cflags` -DTEST_URL_UTIL url-util.c `glib-config --libs
./test_url_util URL
*/
#ifdef TEST_URL_UTIL
int
main (int argc, char **argv)
{
GString *url;
GString *protocol;
GString *user;
GString *passwd;
guint position=0;
gboolean error;
gboolean found;
guint i;
url = g_string_new(argv[1]);
printf("URL to test : %s\n\n", url->str);
/* Try to find the protocol */
found = find_protocol(url, &protocol, &position, &error);
if (found) {
printf("protocol found : %s\n", protocol->str);
} else printf("protocol not found in URL\n\n");
printf("posistion of the next item:\n");
printf("%s\n", url->str);
for(i=0; i<position; i++) printf(" ");
printf("^\n");
/* Try to find the user name */
found = find_user(url, &user, &position, &error);
if (found) {
printf("name found : %s\n", user->str);
} else printf("user name not found in URL\n");
printf("posistion of the next item:\n");
printf("%s\n", url->str);
for(i=0; i<position; i++) printf(" ");
printf("^\n");
/* Try to find the password */
found = find_passwd(url, &passwd, &position, &error);
if (found) {
printf("passwd found : %s\n", passwd->str);
printf("\n");
} else printf("passwd not found in URL\n");
printf("posistion of the next item:\n");
printf("%s\n", url->str);
for(i=0; i<position; i++) printf(" ");
printf("^\n");
return 0;
}
#endif /* TEST_URL_UTIL */
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