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/*
* openvpnmsica -- Custom Action DLL to provide OpenVPN-specific support to MSI packages
* https://community.openvpn.net/openvpn/wiki/OpenVPNMSICA
*
* Copyright (C) 2018-2021 Simon Rozman <simon@rozman.si>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#elif defined(_MSC_VER)
#include <config-msvc.h>
#endif
#include "msica_arg.h"
#include "../tapctl/error.h"
#include "../tapctl/tap.h"
#include <windows.h>
#include <malloc.h>
void
msica_arg_seq_init(_Inout_ struct msica_arg_seq *seq)
{
seq->head = NULL;
seq->tail = NULL;
}
void
msica_arg_seq_free(_Inout_ struct msica_arg_seq *seq)
{
while (seq->head)
{
struct msica_arg *p = seq->head;
seq->head = seq->head->next;
free(p);
}
seq->tail = NULL;
}
void
msica_arg_seq_add_head(
_Inout_ struct msica_arg_seq *seq,
_In_z_ LPCTSTR argument)
{
size_t argument_size = (_tcslen(argument) + 1) * sizeof(TCHAR);
struct msica_arg *p = malloc(sizeof(struct msica_arg) + argument_size);
if (p == NULL)
{
msg(M_FATAL, "%s: malloc(%u) failed", __FUNCTION__, sizeof(struct msica_arg) + argument_size);
}
memcpy(p->val, argument, argument_size);
p->next = seq->head;
seq->head = p;
if (seq->tail == NULL)
{
seq->tail = p;
}
}
void
msica_arg_seq_add_tail(
_Inout_ struct msica_arg_seq *seq,
_Inout_ LPCTSTR argument)
{
size_t argument_size = (_tcslen(argument) + 1) * sizeof(TCHAR);
struct msica_arg *p = malloc(sizeof(struct msica_arg) + argument_size);
if (p == NULL)
{
msg(M_FATAL, "%s: malloc(%u) failed", __FUNCTION__, sizeof(struct msica_arg) + argument_size);
}
memcpy(p->val, argument, argument_size);
p->next = NULL;
*(seq->tail ? &seq->tail->next : &seq->head) = p;
seq->tail = p;
}
LPTSTR
msica_arg_seq_join(_In_ const struct msica_arg_seq *seq)
{
/* Count required space. */
size_t size = 2 /*x + zero-terminator*/;
for (struct msica_arg *p = seq->head; p != NULL; p = p->next)
{
size += _tcslen(p->val) + 1 /*space delimiter|zero-terminator*/;
}
size *= sizeof(TCHAR);
/* Allocate. */
LPTSTR str = malloc(size);
if (str == NULL)
{
msg(M_FATAL, "%s: malloc(%u) failed", __FUNCTION__, size);
return NULL;
}
#ifdef _MSC_VER
#pragma warning(push)
#pragma warning(disable: 4996) /* Using unsafe string functions: The space in s and termination of p->val has been implicitly verified at the beginning of this function. */
#endif
/* Dummy argv[0] (i.e. executable name), for CommandLineToArgvW to work correctly when parsing this string. */
_tcscpy(str, TEXT("x"));
/* Join. */
LPTSTR s = str + 1 /*x*/;
for (struct msica_arg *p = seq->head; p != NULL; p = p->next)
{
/* Convert zero-terminator into space delimiter. */
s[0] = TEXT(' ');
s++;
/* Append argument. */
_tcscpy(s, p->val);
s += _tcslen(p->val);
}
#ifdef _MSC_VER
#pragma warning(pop)
#endif
return str;
}
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