/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2018 Red Hat, Inc.
*/
#include "shared/systemd/nm-default-systemd-shared.h"
#include "nm-sd-utils-shared.h"
#include "nm-sd-adapt-shared.h"
#include "dns-domain.h"
#include "hexdecoct.h"
#include "hostname-util.h"
#include "path-util.h"
#include "web-util.h"
/*****************************************************************************/
const bool mempool_use_allowed = true;
/*****************************************************************************/
gboolean
nm_sd_utils_path_equal(const char *a, const char *b)
{
return path_equal(a, b);
}
char *
nm_sd_utils_path_simplify(char *path, gboolean kill_dots)
{
return path_simplify(path, kill_dots);
}
const char *
nm_sd_utils_path_startswith(const char *path, const char *prefix)
{
return path_startswith(path, prefix);
}
/*****************************************************************************/
int
nm_sd_utils_unbase64char(char ch, gboolean accept_padding_equal)
{
if (ch == '=' && accept_padding_equal)
return G_MAXINT;
return unbase64char(ch);
}
/**
* nm_sd_utils_unbase64mem:
* @p: a valid base64 string. Whitespace is ignored, but invalid encodings
* will cause the function to fail.
* @l: the length of @p. @p is not treated as NUL terminated string but
* merely as a buffer of ascii characters.
* @secure: whether the temporary memory will be cleared to avoid leaving
* secrets in memory (see also nm_explicit_bzero()).
* @mem: (transfer full): the decoded buffer on success.
* @len: the length of @mem on success.
*
* glib provides g_base64_decode(), but that does not report any errors
* from invalid encodings. Expose systemd's implementation which does
* reject invalid inputs.
*
* Returns: a non-negative code on success. Invalid encoding let the
* function fail.
*/
int
nm_sd_utils_unbase64mem(const char *p, size_t l, gboolean secure, guint8 **mem, size_t *len)
{
return unbase64mem_full(p, l, secure, (void **) mem, len);
}
int
nm_sd_dns_name_to_wire_format(const char *domain, guint8 *buffer, size_t len, gboolean canonical)
{
return dns_name_to_wire_format(domain, buffer, len, canonical);
}
int
nm_sd_dns_name_is_valid(const char *s)
{
return dns_name_is_valid(s);
}
gboolean
nm_sd_hostname_is_valid(const char *s, bool allow_trailing_dot)
{
return hostname_is_valid(s,
allow_trailing_dot ? VALID_HOSTNAME_TRAILING_DOT
: (ValidHostnameFlags) 0);
}
char *
nm_sd_dns_name_normalize(const char *s)
{
nm_auto_free char *n = NULL;
int r;
r = dns_name_normalize(s, 0, &n);
if (r < 0)
return NULL;
nm_assert(n);
/* usually we try not to mix malloc/g_malloc and free/g_free. In practice,
* they are the same. So here we return a buffer allocated with malloc(),
* and the caller should free it with g_free(). */
return g_steal_pointer(&n);
}
/*****************************************************************************/
static gboolean
_http_url_is_valid(const char *url, gboolean only_https)
{
if (!url || !url[0])
return FALSE;
if (!only_https && NM_STR_HAS_PREFIX(url, "http://"))
url += NM_STRLEN("http://");
else if (NM_STR_HAS_PREFIX(url, "https://"))
url += NM_STRLEN("https://");
else
return FALSE;
if (!url[0])
return FALSE;
return !NM_STRCHAR_ANY(url, ch, (guchar) ch >= 128u);
}
gboolean
nm_sd_http_url_is_valid_https(const char *url)
{
/* We use this function to verify connection:mud-url property, it must thus
* not change behavior.
*
* Note that sd_dhcp_client_set_mud_url() and sd_dhcp6_client_set_request_mud_url()
* assert with http_url_is_valid() that the argument is valid. We thus must make
* sure to only pass URLs that are valid according to http_url_is_valid().
*
* This is given, because our nm_sd_http_url_is_valid_https() is more strict
* than http_url_is_valid().
*
* We only must make sure that this is also correct in the future, when we
* re-import systemd code. */
nm_assert(_http_url_is_valid(url, FALSE) == http_url_is_valid(url));
return _http_url_is_valid(url, TRUE);
}
/*****************************************************************************/
int
nmtst_systemd_extract_first_word_all(const char *str, char ***out_strv)
{
gs_unref_ptrarray GPtrArray *arr = NULL;
/* we implement a str split function to parse `/proc/cmdline`. This
* code should behave like systemd, which uses extract_first_word()
* for that.
*
* As we want to unit-test our implementation to match systemd,
* expose this function for testing. */
g_assert(out_strv);
g_assert(!*out_strv);
if (!str)
return 0;
arr = g_ptr_array_new_with_free_func(g_free);
for (;;) {
gs_free char *word = NULL;
int r;
r = extract_first_word(&str, &word, NULL, EXTRACT_UNQUOTE | EXTRACT_RELAX);
if (r < 0)
return r;
if (r == 0)
break;
g_ptr_array_add(arr, g_steal_pointer(&word));
}
g_ptr_array_add(arr, NULL);
*out_strv = (char **) g_ptr_array_free(g_steal_pointer(&arr), FALSE);
return 1;
}