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/* $Id$ */
/*
* Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/types.h>
#include <sys/stat.h>
#include <ctype.h>
#include <string.h>
#include "fdm.h"
int netrc_token(FILE *, char **);
FILE *
netrc_open(const char *home, char **cause)
{
char path[MAXPATHLEN];
struct stat sb;
FILE *f;
if (ppath(path, sizeof path, "%s/%s", home, ".netrc") != 0) {
xasprintf(cause, "%s", strerror(errno));
return (NULL);
}
if (stat(path, &sb) != 0) {
xasprintf(cause, "%s: %s", path, strerror(errno));
return (NULL);
}
if ((sb.st_mode & (S_IROTH|S_IWOTH)) != 0) {
xasprintf(cause, "%s: world readable or writable", path);
return (NULL);
}
if ((f = fopen(path, "r")) == NULL) {
xasprintf(cause, "%s: %s", path, strerror(errno));
return (NULL);
}
return (f);
}
void
netrc_close(FILE *f)
{
fclose(f);
}
int
netrc_lookup(FILE *f, const char *host, char **user, char **pass)
{
char *token;
int found;
if (user != NULL)
*user = NULL;
if (pass != NULL)
*pass = NULL;
found = 0;
for (;;) {
switch (netrc_token(f, &token)) {
case 1:
return (0);
case -1:
return (-1);
}
if (!found) {
if (strcmp(token, "machine") == 0) {
if (netrc_token(f, &token) != 0)
return (-1);
if (strcmp(token, host) == 0)
found = 1;
} else if (strcmp(token, "default") == 0)
found = 1;
} else {
if (strcmp(token, "machine") == 0)
break;
if (strcmp(token, "default") == 0)
break;
if (user != NULL && strcmp(token, "login") == 0) {
if (netrc_token(f, &token) != 0)
return (-1);
if (*token == '\0')
return (-1);
*user = xstrdup(token);
}
if (pass != NULL && strcmp(token, "password") == 0) {
if (netrc_token(f, &token) != 0)
return (-1);
if (*token == '\0')
return (-1);
*pass = xstrdup(token);
}
}
}
return (0);
}
/*
* Function below modified from token() in OpenBSD's usr.bin/ftp/ruserpass.c.
*
* $OpenBSD: ruserpass.c,v 1.20 2006/05/16 23:43:16 ray Exp $
* $NetBSD: ruserpass.c,v 1.14 1997/07/20 09:46:01 lukem Exp $
*
* Copyright (c) 1985, 1993, 1994
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
int
netrc_token(FILE *f, char **cpp)
{
static char token[BUFSIZ];
char *cp;
int c;
if (feof(f) || ferror(f))
return (1);
while ((c = fgetc(f)) != EOF && (isspace(c) || c == ','))
;
if (c == EOF)
return (1);
cp = token;
if (c == '"') {
while ((c = fgetc(f)) != EOF && c != '"') {
if (c == '\\' && (c = fgetc(f)) == EOF)
break;
*cp++ = c;
if (cp == token + (sizeof token))
return (-1);
}
if (c == EOF) /* missing " */
return (-1);
} else {
*cp++ = c;
while ((c = fgetc(f)) != EOF && !isspace(c) && c != ',') {
if (c == '\\' && (c = fgetc(f)) == EOF)
break;
*cp++ = c;
if (cp == token + (sizeof token))
return (-1);
}
}
*cp = '\0';
*cpp = token;
return (0);
}
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