mirror of https://github.com/sudo-project/sudo.git
110 lines
2.9 KiB
C
110 lines
2.9 KiB
C
/*
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* SPDX-License-Identifier: ISC
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*
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* Copyright (c) 2019-2020 Todd C. Miller <Todd.Miller@sudo.ws>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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/*
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* This is an open source non-commercial project. Dear PVS-Studio, please check it.
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* PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
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*/
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#include <config.h>
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#ifdef HAVE_STDBOOL_H
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# include <stdbool.h>
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#else
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# include <compat/stdbool.h>
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#endif /* HAVE_STDBOOL_H */
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#include <stdio.h>
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#include <string.h>
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#include <time.h>
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#include <sudo_compat.h>
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#include <sudo_debug.h>
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#include <sudo_gettext.h>
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#include <sudo_util.h>
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#include <sudo_iolog.h>
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/*
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* Parse a string in the form host[:port] where host can also be
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* an IPv4 address or an IPv6 address in square brackets.
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* Fills in hostp and portp which may point within str, which is modified.
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*/
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bool
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iolog_parse_host_port(char *str, char **hostp, char **portp, bool *tlsp,
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const char *defport, const char *defport_tls)
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{
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char *flags, *port, *host = str;
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bool ret = false;
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bool tls = false;
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debug_decl(iolog_parse_host_port, SUDO_DEBUG_UTIL);
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/* Check for IPv6 address like [::0] followed by optional port */
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if (*host == '[') {
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host++;
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port = strchr(host, ']');
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if (port == NULL) {
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sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
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"invalid IPv6 address %s", str);
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goto done;
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}
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*port++ = '\0';
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switch (*port) {
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case ':':
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port++;
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break;
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case '\0':
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port = NULL; /* no port specified */
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break;
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case '(':
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/* flag, handled below */
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break;
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default:
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sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
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"invalid IPv6 address %s", str);
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goto done;
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}
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} else {
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port = strrchr(host, ':');
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if (port != NULL)
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*port++ = '\0';
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}
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/* Check for optional tls flag at the end. */
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flags = strchr(port ? port : host, '(');
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if (flags != NULL) {
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if (strcasecmp(flags, "(tls)") == 0)
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tls = true;
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*flags = '\0';
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if (port == flags)
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port = NULL;
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}
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if (port == NULL)
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port = tls ? (char *)defport_tls : (char *)defport;
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else if (*port == '\0')
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goto done;
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*hostp = host;
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*portp = port;
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*tlsp = tls;
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ret = true;
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done:
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debug_return_bool(ret);
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}
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