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/*
* Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: password.c,v 1.36 2001/03/22 03:59:30 momjian Exp $
*
*/
#include <errno.h>
#include <unistd.h>
#include "postgres.h"
#ifdef HAVE_CRYPT_H
#include <crypt.h>
#endif
#include "libpq/libpq.h"
#include "libpq/password.h"
#include "libpq/crypt.h"
#include "miscadmin.h"
#include "storage/fd.h"
int
verify_password(const Port *port, const char *user, const char *password)
{
char *pw_file_fullname;
FILE *pw_file;
pw_file_fullname = (char *) palloc(strlen(DataDir) + strlen(port->auth_arg) + 2);
strcpy(pw_file_fullname, DataDir);
strcat(pw_file_fullname, "/");
strcat(pw_file_fullname, port->auth_arg);
pw_file = AllocateFile(pw_file_fullname, PG_BINARY_R);
if (!pw_file)
{
snprintf(PQerrormsg, PQERRORMSG_LENGTH,
"verify_password: Unable to open password file \"%s\": %s\n",
pw_file_fullname, strerror(errno));
fputs(PQerrormsg, stderr);
pqdebug("%s", PQerrormsg);
pfree(pw_file_fullname);
return STATUS_ERROR;
}
pfree(pw_file_fullname);
while (!feof(pw_file))
{
char pw_file_line[255],
*p,
*test_user,
*test_pw;
if (fgets(pw_file_line, sizeof(pw_file_line), pw_file) == NULL)
pw_file_line[0] = '\0';
/* kill the newline */
if (strlen(pw_file_line) > 0 &&
pw_file_line[strlen(pw_file_line) - 1] == '\n')
pw_file_line[strlen(pw_file_line) - 1] = '\0';
p = pw_file_line;
test_user = strtok(p, ":");
if (!test_user || test_user[0] == '\0')
continue;
test_pw = strtok(NULL, ":");
if (strcmp(user, test_user) == 0)
{
/* we're outta here one way or the other, so close file */
FreeFile(pw_file);
/*
* If the password is empty of "+" then we use the regular
* pg_shadow passwords. If we use crypt then we have to use
* pg_shadow passwords no matter what.
*/
if (port->auth_method == uaCrypt
|| test_pw == NULL || test_pw[0] == '\0'
|| strcmp(test_pw, "+") == 0)
return crypt_verify(port, user, password);
if (strcmp(crypt(password, test_pw), test_pw) == 0)
{
/* it matched. */
return STATUS_OK;
}
snprintf(PQerrormsg, PQERRORMSG_LENGTH,
"verify_password: password mismatch for '%s'.\n",
user);
fputs(PQerrormsg, stderr);
pqdebug("%s", PQerrormsg);
return STATUS_ERROR;
}
}
FreeFile(pw_file);
snprintf(PQerrormsg, PQERRORMSG_LENGTH,
"verify_password: user '%s' not found in password file.\n",
user);
fputs(PQerrormsg, stderr);
pqdebug("%s", PQerrormsg);
return STATUS_ERROR;
}
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