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/*
* WPA Supplicant / Windows Named Pipe -based control interface
* Copyright (c) 2004-2006, Jouni Malinen <j@w1.fi>
*
* 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.
*
* Alternatively, this software may be distributed under the terms of BSD
* license.
*
* See README and COPYING for more details.
*/
#include "includes.h"
#include "common.h"
#include "eloop.h"
#include "config.h"
#include "eapol_sm.h"
#include "wpa_supplicant_i.h"
#include "ctrl_iface.h"
#include "wpa_ctrl.h"
#ifdef __MINGW32_VERSION
/* mingw-w32api v3.1 does not yet include sddl.h, so define needed parts here
*/
#define SDDL_REVISION_1 1
BOOL WINAPI ConvertStringSecurityDescriptorToSecurityDescriptorA(
LPCSTR, DWORD, PSECURITY_DESCRIPTOR *, PULONG);
BOOL WINAPI ConvertStringSecurityDescriptorToSecurityDescriptorW(
LPCWSTR, DWORD, PSECURITY_DESCRIPTOR *, PULONG);
#ifdef UNICODE
#define ConvertStringSecurityDescriptorToSecurityDescriptor \
ConvertStringSecurityDescriptorToSecurityDescriptorW
#else
#define ConvertStringSecurityDescriptorToSecurityDescriptor \
ConvertStringSecurityDescriptorToSecurityDescriptorA
#endif
#else /* __MINGW32_VERSION */
#ifndef _WIN32_WINNT
#define _WIN32_WINNT 0x0500
#endif
#include <sddl.h>
#endif /* __MINGW32_VERSION */
#ifndef WPA_SUPPLICANT_NAMED_PIPE
#define WPA_SUPPLICANT_NAMED_PIPE "WpaSupplicant"
#endif
#define NAMED_PIPE_PREFIX TEXT("\\\\.\\pipe\\") TEXT(WPA_SUPPLICANT_NAMED_PIPE)
/* Per-interface ctrl_iface */
#define REQUEST_BUFSIZE 256
#define REPLY_BUFSIZE 4096
struct ctrl_iface_priv;
/**
* struct wpa_ctrl_dst - Internal data structure of control interface clients
*
* This structure is used to store information about registered control
* interface monitors into struct wpa_supplicant. This data is private to
* ctrl_iface_named_pipe.c and should not be touched directly from other files.
*/
struct wpa_ctrl_dst {
/* Note: OVERLAPPED must be the first member of struct wpa_ctrl_dst */
OVERLAPPED overlap;
struct wpa_ctrl_dst *next, *prev;
struct ctrl_iface_priv *priv;
HANDLE pipe;
int attached;
int debug_level;
int errors;
char req_buf[REQUEST_BUFSIZE];
char *rsp_buf;
int used;
};
struct ctrl_iface_priv {
struct wpa_supplicant *wpa_s;
struct wpa_ctrl_dst *ctrl_dst;
SECURITY_ATTRIBUTES attr;
int sec_attr_set;
};
static void wpa_supplicant_ctrl_iface_send(struct ctrl_iface_priv *priv,
int level, const char *buf,
size_t len);
static void ctrl_close_pipe(struct wpa_ctrl_dst *dst);
static void wpa_supplicant_ctrl_iface_receive(void *, void *);
static VOID WINAPI ctrl_iface_read_completed(DWORD err, DWORD bytes,
LPOVERLAPPED overlap);
struct wpa_global_dst;
static void global_close_pipe(struct wpa_global_dst *dst);
static void wpa_supplicant_global_iface_receive(void *eloop_data,
void *user_ctx);
static VOID WINAPI global_iface_read_completed(DWORD err, DWORD bytes,
LPOVERLAPPED overlap);
static int ctrl_broken_pipe(HANDLE pipe, int used)
{
DWORD err;
if (PeekNamedPipe(pipe, NULL, 0, NULL, NULL, NULL))
return 0;
err = GetLastError();
if (err == ERROR_BROKEN_PIPE || (err == ERROR_BAD_PIPE && used))
return 1;
return 0;
}
static void ctrl_flush_broken_pipes(struct ctrl_iface_priv *priv)
{
struct wpa_ctrl_dst *dst, *next;
dst = priv->ctrl_dst;
while (dst) {
next = dst->next;
if (ctrl_broken_pipe(dst->pipe, dst->used)) {
wpa_printf(MSG_DEBUG, "CTRL: closing broken pipe %p",
dst);
ctrl_close_pipe(dst);
}
dst = next;
}
}
static int ctrl_open_pipe(struct ctrl_iface_priv *priv)
{
struct wpa_ctrl_dst *dst;
DWORD err;
TCHAR name[256];
dst = os_zalloc(sizeof(*dst));
if (dst == NULL)
return -1;
wpa_printf(MSG_DEBUG, "CTRL: Open pipe %p", dst);
dst->priv = priv;
dst->debug_level = MSG_INFO;
dst->pipe = INVALID_HANDLE_VALUE;
dst->overlap.hEvent = CreateEvent(NULL, TRUE, TRUE, NULL);
if (dst->overlap.hEvent == NULL) {
wpa_printf(MSG_ERROR, "CTRL: CreateEvent failed: %d",
(int) GetLastError());
goto fail;
}
eloop_register_event(dst->overlap.hEvent,
sizeof(dst->overlap.hEvent),
wpa_supplicant_ctrl_iface_receive, dst, NULL);
#ifdef UNICODE
_snwprintf(name, 256, NAMED_PIPE_PREFIX TEXT("-%S"),
priv->wpa_s->ifname);
#else /* UNICODE */
os_snprintf(name, 256, NAMED_PIPE_PREFIX "-%s",
priv->wpa_s->ifname);
#endif /* UNICODE */
/* TODO: add support for configuring access list for the pipe */
dst->pipe = CreateNamedPipe(name,
PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
PIPE_TYPE_MESSAGE |
PIPE_READMODE_MESSAGE |
PIPE_WAIT,
15, REPLY_BUFSIZE, REQUEST_BUFSIZE,
1000,
priv->sec_attr_set ? &priv->attr : NULL);
if (dst->pipe == INVALID_HANDLE_VALUE) {
wpa_printf(MSG_ERROR, "CTRL: CreateNamedPipe failed: %d",
(int) GetLastError());
goto fail;
}
if (ConnectNamedPipe(dst->pipe, &dst->overlap)) {
wpa_printf(MSG_ERROR, "CTRL: ConnectNamedPipe failed: %d",
(int) GetLastError());
CloseHandle(dst->pipe);
os_free(dst);
return -1;
}
err = GetLastError();
switch (err) {
case ERROR_IO_PENDING:
wpa_printf(MSG_DEBUG, "CTRL: ConnectNamedPipe: connection in "
"progress");
break;
case ERROR_PIPE_CONNECTED:
wpa_printf(MSG_DEBUG, "CTRL: ConnectNamedPipe: already "
"connected");
if (SetEvent(dst->overlap.hEvent))
break;
/* fall through */
default:
wpa_printf(MSG_DEBUG, "CTRL: ConnectNamedPipe error: %d",
(int) err);
CloseHandle(dst->pipe);
os_free(dst);
return -1;
}
dst->next = priv->ctrl_dst;
if (dst->next)
dst->next->prev = dst;
priv->ctrl_dst = dst;
return 0;
fail:
ctrl_close_pipe(dst);
return -1;
}
static void ctrl_close_pipe(struct wpa_ctrl_dst *dst)
{
wpa_printf(MSG_DEBUG, "CTRL: close pipe %p", dst);
if (dst->overlap.hEvent) {
eloop_unregister_event(dst->overlap.hEvent,
sizeof(dst->overlap.hEvent));
CloseHandle(dst->overlap.hEvent);
}
if (dst->pipe != INVALID_HANDLE_VALUE) {
/*
* Could use FlushFileBuffers() here to guarantee that all data
* gets delivered to the client, but that can block, so let's
* not do this for now.
* FlushFileBuffers(dst->pipe);
*/
CloseHandle(dst->pipe);
}
if (dst->prev)
dst->prev->next = dst->next;
else
dst->priv->ctrl_dst = dst->next;
if (dst->next)
dst->next->prev = dst->prev;
os_free(dst->rsp_buf);
os_free(dst);
}
static VOID WINAPI ctrl_iface_write_completed(DWORD err, DWORD bytes,
LPOVERLAPPED overlap)
{
struct wpa_ctrl_dst *dst = (struct wpa_ctrl_dst *) overlap;
wpa_printf(MSG_DEBUG, "CTRL: Overlapped write completed: dst=%p "
"err=%d bytes=%d", dst, (int) err, (int) bytes);
if (err) {
ctrl_close_pipe(dst);
return;
}
os_free(dst->rsp_buf);
dst->rsp_buf = NULL;
if (!ReadFileEx(dst->pipe, dst->req_buf, sizeof(dst->req_buf),
&dst->overlap, ctrl_iface_read_completed)) {
wpa_printf(MSG_DEBUG, "CTRL: ReadFileEx failed: %d",
(int) GetLastError());
ctrl_close_pipe(dst);
return;
}
wpa_printf(MSG_DEBUG, "CTRL: Overlapped read started for %p", dst);
}
static void wpa_supplicant_ctrl_iface_rx(struct wpa_ctrl_dst *dst, size_t len)
{
struct wpa_supplicant *wpa_s = dst->priv->wpa_s;
char *reply = NULL, *send_buf;
size_t reply_len = 0, send_len;
int new_attached = 0;
char *buf = dst->req_buf;
dst->used = 1;
if (len >= REQUEST_BUFSIZE)
len = REQUEST_BUFSIZE - 1;
buf[len] = '\0';
if (os_strcmp(buf, "ATTACH") == 0) {
dst->attached = 1;
wpa_printf(MSG_DEBUG, "CTRL_IFACE monitor attached");
new_attached = 1;
reply_len = 2;
} else if (os_strcmp(buf, "DETACH") == 0) {
dst->attached = 0;
wpa_printf(MSG_DEBUG, "CTRL_IFACE monitor detached");
reply_len = 2;
} else if (os_strncmp(buf, "LEVEL ", 6) == 0) {
wpa_printf(MSG_DEBUG, "CTRL_IFACE LEVEL %s", buf + 6);
dst->debug_level = atoi(buf + 6);
reply_len = 2;
} else {
reply = wpa_supplicant_ctrl_iface_process(wpa_s, buf,
&reply_len);
}
if (reply) {
send_buf = reply;
send_len = reply_len;
} else if (reply_len == 2) {
send_buf = "OK\n";
send_len = 3;
} else {
send_buf = "FAIL\n";
send_len = 5;
}
os_free(dst->rsp_buf);
dst->rsp_buf = os_malloc(send_len);
if (dst->rsp_buf == NULL) {
ctrl_close_pipe(dst);
os_free(reply);
return;
}
os_memcpy(dst->rsp_buf, send_buf, send_len);
os_free(reply);
if (!WriteFileEx(dst->pipe, dst->rsp_buf, send_len, &dst->overlap,
ctrl_iface_write_completed)) {
wpa_printf(MSG_DEBUG, "CTRL: WriteFileEx failed: %d",
(int) GetLastError());
ctrl_close_pipe(dst);
} else {
wpa_printf(MSG_DEBUG, "CTRL: Overlapped write started for %p",
dst);
}
if (new_attached)
eapol_sm_notify_ctrl_attached(wpa_s->eapol);
}
static VOID WINAPI ctrl_iface_read_completed(DWORD err, DWORD bytes,
LPOVERLAPPED overlap)
{
struct wpa_ctrl_dst *dst = (struct wpa_ctrl_dst *) overlap;
wpa_printf(MSG_DEBUG, "CTRL: Overlapped read completed: dst=%p err=%d "
"bytes=%d", dst, (int) err, (int) bytes);
if (err == 0 && bytes > 0)
wpa_supplicant_ctrl_iface_rx(dst, bytes);
}
static void wpa_supplicant_ctrl_iface_receive(void *eloop_data, void *user_ctx)
{
struct wpa_ctrl_dst *dst = eloop_data;
struct ctrl_iface_priv *priv = dst->priv;
DWORD bytes;
wpa_printf(MSG_DEBUG, "CTRL: wpa_supplicant_ctrl_iface_receive");
ResetEvent(dst->overlap.hEvent);
if (!GetOverlappedResult(dst->pipe, &dst->overlap, &bytes, FALSE)) {
wpa_printf(MSG_DEBUG, "CTRL: GetOverlappedResult failed: %d",
(int) GetLastError());
return;
}
wpa_printf(MSG_DEBUG, "CTRL: GetOverlappedResult: New client "
"connected");
/* Open a new named pipe for the next client. */
ctrl_open_pipe(priv);
/* Use write completion function to start reading a command */
ctrl_iface_write_completed(0, 0, &dst->overlap);
ctrl_flush_broken_pipes(priv);
}
static int ctrl_iface_parse(struct ctrl_iface_priv *priv, const char *params)
{
const char *sddl = NULL;
TCHAR *t_sddl;
if (os_strncmp(params, "SDDL=", 5) == 0)
sddl = params + 5;
if (!sddl) {
sddl = os_strstr(params, " SDDL=");
if (sddl)
sddl += 6;
}
if (!sddl)
return 0;
wpa_printf(MSG_DEBUG, "CTRL: SDDL='%s'", sddl);
os_memset(&priv->attr, 0, sizeof(priv->attr));
priv->attr.nLength = sizeof(priv->attr);
priv->attr.bInheritHandle = FALSE;
t_sddl = wpa_strdup_tchar(sddl);
if (t_sddl == NULL)
return -1;
if (!ConvertStringSecurityDescriptorToSecurityDescriptor(
t_sddl, SDDL_REVISION_1,
(PSECURITY_DESCRIPTOR *) &priv->attr.lpSecurityDescriptor,
NULL)) {
os_free(t_sddl);
wpa_printf(MSG_ERROR, "CTRL: SDDL='%s' - could not convert to "
"security descriptor: %d",
sddl, (int) GetLastError());
return -1;
}
os_free(t_sddl);
priv->sec_attr_set = 1;
return 0;
}
static void wpa_supplicant_ctrl_iface_msg_cb(void *ctx, int level,
const char *txt, size_t len)
{
struct wpa_supplicant *wpa_s = ctx;
if (wpa_s == NULL || wpa_s->ctrl_iface == NULL)
return;
wpa_supplicant_ctrl_iface_send(wpa_s->ctrl_iface, level, txt, len);
}
struct ctrl_iface_priv *
wpa_supplicant_ctrl_iface_init(struct wpa_supplicant *wpa_s)
{
struct ctrl_iface_priv *priv;
priv = os_zalloc(sizeof(*priv));
if (priv == NULL)
return NULL;
priv->wpa_s = wpa_s;
if (wpa_s->conf->ctrl_interface == NULL)
return priv;
if (ctrl_iface_parse(priv, wpa_s->conf->ctrl_interface) < 0) {
os_free(priv);
return NULL;
}
if (ctrl_open_pipe(priv) < 0) {
os_free(priv);
return NULL;
}
wpa_msg_register_cb(wpa_supplicant_ctrl_iface_msg_cb);
return priv;
}
void wpa_supplicant_ctrl_iface_deinit(struct ctrl_iface_priv *priv)
{
while (priv->ctrl_dst)
ctrl_close_pipe(priv->ctrl_dst);
if (priv->sec_attr_set)
LocalFree(priv->attr.lpSecurityDescriptor);
os_free(priv);
}
static void wpa_supplicant_ctrl_iface_send(struct ctrl_iface_priv *priv,
int level, const char *buf,
size_t len)
{
struct wpa_ctrl_dst *dst, *next;
char levelstr[10];
int idx;
char *sbuf;
int llen;
DWORD written;
dst = priv->ctrl_dst;
if (dst == NULL)
return;
os_snprintf(levelstr, sizeof(levelstr), "<%d>", level);
llen = os_strlen(levelstr);
sbuf = os_malloc(llen + len);
if (sbuf == NULL)
return;
os_memcpy(sbuf, levelstr, llen);
os_memcpy(sbuf + llen, buf, len);
idx = 0;
while (dst) {
next = dst->next;
if (dst->attached && level >= dst->debug_level) {
wpa_printf(MSG_DEBUG, "CTRL_IFACE monitor send %p",
dst);
if (!WriteFile(dst->pipe, sbuf, llen + len, &written,
NULL)) {
wpa_printf(MSG_DEBUG, "CTRL: WriteFile to dst "
"%p failed: %d",
dst, (int) GetLastError());
dst->errors++;
if (dst->errors > 10)
ctrl_close_pipe(dst);
} else
dst->errors = 0;
}
idx++;
dst = next;
}
os_free(sbuf);
}
void wpa_supplicant_ctrl_iface_wait(struct ctrl_iface_priv *priv)
{
wpa_printf(MSG_DEBUG, "CTRL_IFACE - %s - wait for monitor",
priv->wpa_s->ifname);
if (priv->ctrl_dst == NULL)
return;
WaitForSingleObject(priv->ctrl_dst->pipe, INFINITE);
}
/* Global ctrl_iface */
struct ctrl_iface_global_priv;
struct wpa_global_dst {
/* Note: OVERLAPPED must be the first member of struct wpa_global_dst
*/
OVERLAPPED overlap;
struct wpa_global_dst *next, *prev;
struct ctrl_iface_global_priv *priv;
HANDLE pipe;
char req_buf[REQUEST_BUFSIZE];
char *rsp_buf;
int used;
};
struct ctrl_iface_global_priv {
struct wpa_global *global;
struct wpa_global_dst *ctrl_dst;
};
static void global_flush_broken_pipes(struct ctrl_iface_global_priv *priv)
{
struct wpa_global_dst *dst, *next;
dst = priv->ctrl_dst;
while (dst) {
next = dst->next;
if (ctrl_broken_pipe(dst->pipe, dst->used)) {
wpa_printf(MSG_DEBUG, "CTRL: closing broken pipe %p",
dst);
global_close_pipe(dst);
}
dst = next;
}
}
static int global_open_pipe(struct ctrl_iface_global_priv *priv)
{
struct wpa_global_dst *dst;
DWORD err;
dst = os_zalloc(sizeof(*dst));
if (dst == NULL)
return -1;
wpa_printf(MSG_DEBUG, "CTRL: Open pipe %p", dst);
dst->priv = priv;
dst->pipe = INVALID_HANDLE_VALUE;
dst->overlap.hEvent = CreateEvent(NULL, TRUE, TRUE, NULL);
if (dst->overlap.hEvent == NULL) {
wpa_printf(MSG_ERROR, "CTRL: CreateEvent failed: %d",
(int) GetLastError());
goto fail;
}
eloop_register_event(dst->overlap.hEvent,
sizeof(dst->overlap.hEvent),
wpa_supplicant_global_iface_receive, dst, NULL);
/* TODO: add support for configuring access list for the pipe */
dst->pipe = CreateNamedPipe(NAMED_PIPE_PREFIX,
PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
PIPE_TYPE_MESSAGE |
PIPE_READMODE_MESSAGE |
PIPE_WAIT,
10, REPLY_BUFSIZE, REQUEST_BUFSIZE,
1000, NULL);
if (dst->pipe == INVALID_HANDLE_VALUE) {
wpa_printf(MSG_ERROR, "CTRL: CreateNamedPipe failed: %d",
(int) GetLastError());
goto fail;
}
if (ConnectNamedPipe(dst->pipe, &dst->overlap)) {
wpa_printf(MSG_ERROR, "CTRL: ConnectNamedPipe failed: %d",
(int) GetLastError());
CloseHandle(dst->pipe);
os_free(dst);
return -1;
}
err = GetLastError();
switch (err) {
case ERROR_IO_PENDING:
wpa_printf(MSG_DEBUG, "CTRL: ConnectNamedPipe: connection in "
"progress");
break;
case ERROR_PIPE_CONNECTED:
wpa_printf(MSG_DEBUG, "CTRL: ConnectNamedPipe: already "
"connected");
if (SetEvent(dst->overlap.hEvent))
break;
/* fall through */
default:
wpa_printf(MSG_DEBUG, "CTRL: ConnectNamedPipe error: %d",
(int) err);
CloseHandle(dst->pipe);
os_free(dst);
return -1;
}
dst->next = priv->ctrl_dst;
if (dst->next)
dst->next->prev = dst;
priv->ctrl_dst = dst;
return 0;
fail:
global_close_pipe(dst);
return -1;
}
static void global_close_pipe(struct wpa_global_dst *dst)
{
wpa_printf(MSG_DEBUG, "CTRL: close pipe %p", dst);
if (dst->overlap.hEvent) {
eloop_unregister_event(dst->overlap.hEvent,
sizeof(dst->overlap.hEvent));
CloseHandle(dst->overlap.hEvent);
}
if (dst->pipe != INVALID_HANDLE_VALUE) {
/*
* Could use FlushFileBuffers() here to guarantee that all data
* gets delivered to the client, but that can block, so let's
* not do this for now.
* FlushFileBuffers(dst->pipe);
*/
CloseHandle(dst->pipe);
}
if (dst->prev)
dst->prev->next = dst->next;
else
dst->priv->ctrl_dst = dst->next;
if (dst->next)
dst->next->prev = dst->prev;
os_free(dst->rsp_buf);
os_free(dst);
}
static VOID WINAPI global_iface_write_completed(DWORD err, DWORD bytes,
LPOVERLAPPED overlap)
{
struct wpa_global_dst *dst = (struct wpa_global_dst *) overlap;
wpa_printf(MSG_DEBUG, "CTRL: Overlapped write completed: dst=%p "
"err=%d bytes=%d", dst, (int) err, (int) bytes);
if (err) {
global_close_pipe(dst);
return;
}
os_free(dst->rsp_buf);
dst->rsp_buf = NULL;
if (!ReadFileEx(dst->pipe, dst->req_buf, sizeof(dst->req_buf),
&dst->overlap, global_iface_read_completed)) {
wpa_printf(MSG_DEBUG, "CTRL: ReadFileEx failed: %d",
(int) GetLastError());
global_close_pipe(dst);
/* FIX: if this was the pipe waiting for new global
* connections, at this point there are no open global pipes..
* Should try to open a new pipe.. */
return;
}
wpa_printf(MSG_DEBUG, "CTRL: Overlapped read started for %p", dst);
}
static void wpa_supplicant_global_iface_rx(struct wpa_global_dst *dst,
size_t len)
{
struct wpa_global *global = dst->priv->global;
char *reply = NULL, *send_buf;
size_t reply_len = 0, send_len;
char *buf = dst->req_buf;
dst->used = 1;
if (len >= REQUEST_BUFSIZE)
len = REQUEST_BUFSIZE - 1;
buf[len] = '\0';
reply = wpa_supplicant_global_ctrl_iface_process(global, buf,
&reply_len);
if (reply) {
send_buf = reply;
send_len = reply_len;
} else if (reply_len) {
send_buf = "FAIL\n";
send_len = 5;
} else {
os_free(dst->rsp_buf);
dst->rsp_buf = NULL;
return;
}
os_free(dst->rsp_buf);
dst->rsp_buf = os_malloc(send_len);
if (dst->rsp_buf == NULL) {
global_close_pipe(dst);
os_free(reply);
return;
}
os_memcpy(dst->rsp_buf, send_buf, send_len);
os_free(reply);
if (!WriteFileEx(dst->pipe, dst->rsp_buf, send_len, &dst->overlap,
global_iface_write_completed)) {
wpa_printf(MSG_DEBUG, "CTRL: WriteFileEx failed: %d",
(int) GetLastError());
global_close_pipe(dst);
} else {
wpa_printf(MSG_DEBUG, "CTRL: Overlapped write started for %p",
dst);
}
}
static VOID WINAPI global_iface_read_completed(DWORD err, DWORD bytes,
LPOVERLAPPED overlap)
{
struct wpa_global_dst *dst = (struct wpa_global_dst *) overlap;
wpa_printf(MSG_DEBUG, "CTRL: Overlapped read completed: dst=%p err=%d "
"bytes=%d", dst, (int) err, (int) bytes);
if (err == 0 && bytes > 0)
wpa_supplicant_global_iface_rx(dst, bytes);
}
static void wpa_supplicant_global_iface_receive(void *eloop_data,
void *user_ctx)
{
struct wpa_global_dst *dst = eloop_data;
struct ctrl_iface_global_priv *priv = dst->priv;
DWORD bytes;
wpa_printf(MSG_DEBUG, "CTRL: wpa_supplicant_global_iface_receive");
ResetEvent(dst->overlap.hEvent);
if (!GetOverlappedResult(dst->pipe, &dst->overlap, &bytes, FALSE)) {
wpa_printf(MSG_DEBUG, "CTRL: GetOverlappedResult failed: %d",
(int) GetLastError());
return;
}
wpa_printf(MSG_DEBUG, "CTRL: GetOverlappedResult: New client "
"connected");
/* Open a new named pipe for the next client. */
if (global_open_pipe(priv) < 0) {
wpa_printf(MSG_DEBUG, "CTRL: global_open_pipe failed");
return;
}
/* Use write completion function to start reading a command */
global_iface_write_completed(0, 0, &dst->overlap);
global_flush_broken_pipes(priv);
}
struct ctrl_iface_global_priv *
wpa_supplicant_global_ctrl_iface_init(struct wpa_global *global)
{
struct ctrl_iface_global_priv *priv;
priv = os_zalloc(sizeof(*priv));
if (priv == NULL)
return NULL;
priv->global = global;
if (global_open_pipe(priv) < 0) {
os_free(priv);
return NULL;
}
return priv;
}
void
wpa_supplicant_global_ctrl_iface_deinit(struct ctrl_iface_global_priv *priv)
{
while (priv->ctrl_dst)
global_close_pipe(priv->ctrl_dst);
os_free(priv);
}
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