src/auth/passdb.c

	passdb.c revision ae13f46498f5890e9c83830309d0dde7d56f419b
25757faf029c369a8318349dafe952e2358df1d8Timo Sirainen/* Copyright (C) 2002-2003 Timo Sirainen */
25757faf029c369a8318349dafe952e2358df1d8Timo Sirainen
25757faf029c369a8318349dafe952e2358df1d8Timo Sirainen#include "common.h"
25757faf029c369a8318349dafe952e2358df1d8Timo Sirainen#include "mech.h"
25757faf029c369a8318349dafe952e2358df1d8Timo Sirainen#include "auth-module.h"
25757faf029c369a8318349dafe952e2358df1d8Timo Sirainen#include "passdb.h"
25757faf029c369a8318349dafe952e2358df1d8Timo Sirainen
25757faf029c369a8318349dafe952e2358df1d8Timo Sirainen#include <stdlib.h>
25757faf029c369a8318349dafe952e2358df1d8Timo Sirainen
25757faf029c369a8318349dafe952e2358df1d8Timo Sirainen#ifdef AUTH_MODULES
25757faf029c369a8318349dafe952e2358df1d8Timo Sirainenstatic struct auth_module *passdb_module = NULL;
25757faf029c369a8318349dafe952e2358df1d8Timo Sirainen#endif
25757faf029c369a8318349dafe952e2358df1d8Timo Sirainen
25757faf029c369a8318349dafe952e2358df1d8Timo Sirainenstruct passdb_module *passdb;
25757faf029c369a8318349dafe952e2358df1d8Timo Sirainen
25757faf029c369a8318349dafe952e2358df1d8Timo Sirainenconst char *passdb_credentials_to_str(enum passdb_credentials credentials)
25757faf029c369a8318349dafe952e2358df1d8Timo Sirainen{
25757faf029c369a8318349dafe952e2358df1d8Timo Sirainen    switch (credentials) {
25757faf029c369a8318349dafe952e2358df1d8Timo Sirainen    case _PASSDB_CREDENTIALS_INTERNAL:
965ed6ea3fc8f7637bd0d159d2fdb283a191ce34Timo Sirainen        break;
965ed6ea3fc8f7637bd0d159d2fdb283a191ce34Timo Sirainen    case PASSDB_CREDENTIALS_PLAINTEXT:
965ed6ea3fc8f7637bd0d159d2fdb283a191ce34Timo Sirainen        return "plaintext";
25757faf029c369a8318349dafe952e2358df1d8Timo Sirainen    case PASSDB_CREDENTIALS_CRYPT:
25757faf029c369a8318349dafe952e2358df1d8Timo Sirainen        return "crypt";
25757faf029c369a8318349dafe952e2358df1d8Timo Sirainen    case PASSDB_CREDENTIALS_DIGEST_MD5:
25757faf029c369a8318349dafe952e2358df1d8Timo Sirainen        return "digest-md5";
25757faf029c369a8318349dafe952e2358df1d8Timo Sirainen    }
25757faf029c369a8318349dafe952e2358df1d8Timo Sirainen
25757faf029c369a8318349dafe952e2358df1d8Timo Sirainen    return "??";
25757faf029c369a8318349dafe952e2358df1d8Timo Sirainen}
25757faf029c369a8318349dafe952e2358df1d8Timo Sirainen
25757faf029c369a8318349dafe952e2358df1d8Timo Sirainenvoid passdb_init(void)
25757faf029c369a8318349dafe952e2358df1d8Timo Sirainen{
25757faf029c369a8318349dafe952e2358df1d8Timo Sirainen    const char *name, *args;
25757faf029c369a8318349dafe952e2358df1d8Timo Sirainen
25757faf029c369a8318349dafe952e2358df1d8Timo Sirainen    passdb = NULL;
25757faf029c369a8318349dafe952e2358df1d8Timo Sirainen
25757faf029c369a8318349dafe952e2358df1d8Timo Sirainen    name = getenv("PASSDB");
25757faf029c369a8318349dafe952e2358df1d8Timo Sirainen    if (name == NULL)
25757faf029c369a8318349dafe952e2358df1d8Timo Sirainen        i_fatal("PASSDB environment is unset");
25757faf029c369a8318349dafe952e2358df1d8Timo Sirainen
25757faf029c369a8318349dafe952e2358df1d8Timo Sirainen    args = strchr(name, ' ');
25757faf029c369a8318349dafe952e2358df1d8Timo Sirainen    name = t_strcut(name, ' ');
965ed6ea3fc8f7637bd0d159d2fdb283a191ce34Timo Sirainen
965ed6ea3fc8f7637bd0d159d2fdb283a191ce34Timo Sirainen#ifdef PASSDB_PASSWD
25757faf029c369a8318349dafe952e2358df1d8Timo Sirainen    if (strcasecmp(name, "passwd") == 0)
25757faf029c369a8318349dafe952e2358df1d8Timo Sirainen        passdb = &passdb_passwd;
25757faf029c369a8318349dafe952e2358df1d8Timo Sirainen#endif
25757faf029c369a8318349dafe952e2358df1d8Timo Sirainen#ifdef PASSDB_PASSWD_FILE
25757faf029c369a8318349dafe952e2358df1d8Timo Sirainen    if (strcasecmp(name, "passwd-file") == 0)
25757faf029c369a8318349dafe952e2358df1d8Timo Sirainen        passdb = &passdb_passwd_file;
25757faf029c369a8318349dafe952e2358df1d8Timo Sirainen#endif
#ifdef PASSDB_PAM
    if (strcasecmp(name, "pam") == 0)
        passdb = &passdb_pam;
#endif
#ifdef PASSDB_SHADOW
    if (strcasecmp(name, "shadow") == 0)
        passdb = &passdb_shadow;
#endif
#ifdef PASSDB_VPOPMAIL
    if (strcasecmp(name, "vpopmail") == 0)
        passdb = &passdb_vpopmail;
#endif
#ifdef PASSDB_LDAP
    if (strcasecmp(name, "ldap") == 0)
        passdb = &passdb_ldap;
#endif
#ifdef AUTH_MODULES
    passdb_module = auth_module_open(name);
    if (passdb_module != NULL) {
        passdb = auth_module_sym(passdb_module,
                     t_strconcat("passdb_", name, NULL));
    }
#endif

    if (passdb == NULL)
        i_fatal("Unknown passdb type '%s'", name);

    /* initialize */
    if (passdb->init != NULL)
        passdb->init(args != NULL ? args+1 : "");

    if ((auth_mechanisms & AUTH_MECH_PLAIN) &&
        passdb->verify_plain == NULL)
        i_fatal("Passdb %s doesn't support PLAIN method", name);

    if ((auth_mechanisms & AUTH_MECH_DIGEST_MD5) &&
        passdb->lookup_credentials == NULL)
        i_fatal("Passdb %s doesn't support DIGEST-MD5 method", name);
}

void passdb_deinit(void)
{
    if (passdb != NULL && passdb->deinit != NULL)
        passdb->deinit();
#ifdef AUTH_MODULES
    if (passdb_module != NULL)
                auth_module_close(passdb_module);
#endif
}