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fix Windows SFTP

pull/1159/head
Hideki Miyazaki 2026-08-13 13:02:00 -04:00 committed by John Safranek
parent f1b6a99d56
commit 593216020e
4 changed files with 262 additions and 46 deletions
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4
apps/wolfsshd/wolfsshd.c
View File

@ -3067,7 +3067,9 @@ static int StartSSHD(int argc, char** argv)
if (ret == WS_SUCCESS) {
for (i = 0; i < argc; i++) {
if (WSTRCMP((char*)(cmdArgs[i]), "-D") == 0) {
/* cmdArgs entries are wide strings (CommandLineToArgvW); compare
* as such instead of reinterpreting as narrow char data. */
if (wcscmp(cmdArgs[i], L"-D") == 0) {
isDaemon = 0;
}
}

55
src/wolfsftp.c
View File

@ -2339,6 +2339,32 @@ static void SFTP_HandleIdNext(WOLFSSH* ssh, word32 id[2])
#endif /* !NO_WOLFSSH_SERVER */
#ifdef USE_WINDOWS_API
/* dwCreationDisposition takes one enumerated value, not a bitmask, so
* resolve CREAT/EXCL/TRUNC to a single disposition here. */
static DWORD SFTP_WinCreationDisp(word32 reason)
{
DWORD disp;
if (reason & WOLFSSH_FXF_CREAT) {
if (reason & WOLFSSH_FXF_EXCL)
disp = CREATE_NEW;
else if (reason & WOLFSSH_FXF_TRUNC)
disp = CREATE_ALWAYS;
else
disp = OPEN_ALWAYS;
}
else {
if (reason & WOLFSSH_FXF_TRUNC)
disp = TRUNCATE_EXISTING;
else
disp = OPEN_EXISTING;
}
return disp;
}
#endif /* USE_WINDOWS_API */
/* Handles packet to open a file
*
* returns WS_SUCCESS on success
@ -2662,25 +2688,14 @@ cleanup:
}
#endif
if (reason & WOLFSSH_FXF_READ) {
if (reason & WOLFSSH_FXF_READ)
desiredAccess |= GENERIC_READ;
creationDisp |= OPEN_EXISTING;
}
if (reason & WOLFSSH_FXF_WRITE) {
if (reason & WOLFSSH_FXF_WRITE)
desiredAccess |= GENERIC_WRITE;
if (reason & WOLFSSH_FXF_CREAT) {
if (reason & WOLFSSH_FXF_TRUNC)
creationDisp = CREATE_ALWAYS;
else
creationDisp = OPEN_ALWAYS;
}
#if 0
if (reason & WOLFSSH_FXF_EXCL)
creationDisp |= CREATE_NEW;
if (reason & WOLFSSH_FXF_APPEND)
desiredAccess |= FILE_APPEND_DATA;
#endif
}
creationDisp = SFTP_WinCreationDisp(reason);
#if 0
/* if file permissions not set then use default */
@ -6401,8 +6416,7 @@ int wolfSSH_SFTP_RecvFSetSTAT(WOLFSSH* ssh, int reqId, byte* data, word32 maxSz)
#endif /* _WIN32_WCE */
#if defined(WOLFSSH_TEST_INTERNAL) && !defined(USE_WINDOWS_API) && \
!defined(NO_FILESYSTEM)
#if defined(WOLFSSH_TEST_INTERNAL) && !defined(NO_FILESYSTEM)
/* Test-only plumbing for the forged-handle regression test in tests/regress.c.
*
* The SFTP request handlers buffer their status/handle reply into ssh->recvState
@ -6485,10 +6499,12 @@ int wolfSSH_SFTP_TestDirHandleCount(WOLFSSH* ssh)
}
#endif /* NO_WOLFSSH_DIR */
#ifndef USE_WINDOWS_API
/* Close the underlying descriptor of the head tracked file handle out of band,
* leaving the node in the list with a now-stale fd. The next RecvClose on that
* handle will see its close() fail, exercising the path that must still drop
* the handle from the tracking list. Returns WS_SUCCESS if a node was found. */
* the handle from the tracking list. Returns WS_SUCCESS if a node was found.
* Not provided for Windows, where fd is a HANDLE, not a WCLOSE-able fd. */
int wolfSSH_SFTP_TestInvalidateHeadFd(WOLFSSH* ssh)
{
if (ssh == NULL || ssh->fileList == NULL) {
@ -6501,7 +6517,8 @@ int wolfSSH_SFTP_TestInvalidateHeadFd(WOLFSSH* ssh)
#endif
return WS_SUCCESS;
}
#endif /* WOLFSSH_TEST_INTERNAL && !USE_WINDOWS_API && !NO_FILESYSTEM */
#endif /* !USE_WINDOWS_API */
#endif /* WOLFSSH_TEST_INTERNAL && !NO_FILESYSTEM */
#endif /* !NO_WOLFSSH_SERVER */

238
tests/regress.c
View File

@ -7624,8 +7624,7 @@ static void TestSftpBufferSendPendingOutput(void)
wolfSSH_CTX_free(ctx);
}
#if !defined(NO_WOLFSSH_SERVER) && !defined(USE_WINDOWS_API) && \
!defined(NO_FILESYSTEM)
#if !defined(NO_WOLFSSH_SERVER) && !defined(NO_FILESYSTEM)
/* Write a big-endian uint32 (the SFTP wire encoding). */
static void SftpPutU32(word32 val, byte* out)
{
@ -7642,6 +7641,28 @@ static word32 SftpGetU32(const byte* in)
((word32)in[2] << 8) | (word32)in[3];
}
/* A refused request must still answer the peer with an FXP_STATUS carrying the
* expected code. Asserting only that the call returned non-success would not
* catch a refusal that dropped the reply and left the session hung.
* The request id is checked too: TestRecvReply returns whatever is currently
* buffered, so a handler that dropped its reply would otherwise pass here by
* re-presenting the previous request's status. */
static void AssertSftpStatusReply(WOLFSSH* ssh, int reqId, word32 code)
{
const byte* reply;
word32 replySz;
reply = wolfSSH_SFTP_TestRecvReply(ssh, &replySz);
AssertNotNull(reply);
AssertTrue(replySz >= WOLFSSH_SFTP_HEADER + UINT32_SZ);
AssertIntEQ(reply[LENGTH_SZ], WOLFSSH_FTP_STATUS);
AssertIntEQ((int)SftpGetU32(reply + LENGTH_SZ + MSG_ID_SZ), reqId);
AssertIntEQ((int)SftpGetU32(reply + WOLFSSH_SFTP_HEADER), (int)code);
}
#endif /* !NO_WOLFSSH_SERVER && !NO_FILESYSTEM */
#if !defined(NO_WOLFSSH_SERVER) && !defined(USE_WINDOWS_API) && \
!defined(NO_FILESYSTEM)
/* Return 1 if needle occurs in haystack, 0 otherwise. */
static int SftpBufContains(const byte* hay, word32 haySz,
const byte* needle, word32 needleSz)
@ -8004,25 +8025,6 @@ static void TestSftpHandleNamespaceIsolation(void)
}
#endif /* NO_WOLFSSH_DIR */
/* A refused request must still answer the peer with an FXP_STATUS carrying the
* expected code. Asserting only that the call returned non-success would not
* catch a refusal that dropped the reply and left the session hung.
* The request id is checked too: TestRecvReply returns whatever is currently
* buffered, so a handler that dropped its reply would otherwise pass here by
* re-presenting the previous request's status. */
static void AssertSftpStatusReply(WOLFSSH* ssh, int reqId, word32 code)
{
const byte* reply;
word32 replySz;
reply = wolfSSH_SFTP_TestRecvReply(ssh, &replySz);
AssertNotNull(reply);
AssertTrue(replySz >= WOLFSSH_SFTP_HEADER + UINT32_SZ);
AssertIntEQ(reply[LENGTH_SZ], WOLFSSH_FTP_STATUS);
AssertIntEQ((int)SftpGetU32(reply + LENGTH_SZ + MSG_ID_SZ), reqId);
AssertIntEQ((int)SftpGetU32(reply + WOLFSSH_SFTP_HEADER), (int)code);
}
/* The per-session open-file-handle count is capped at WOLFSSH_MAX_SFTP_HANDLES
* to bound memory and keep the linear handle lookup from becoming a CPU DoS
* vector. Open exactly the cap's worth of handles (all must succeed), confirm
@ -8736,6 +8738,195 @@ static void TestSftpStartPathInsideConfineRoot(void)
#endif /* !NO_WOLFSSH_SERVER && !USE_WINDOWS_API && !NO_FILESYSTEM */
#if !defined(NO_WOLFSSH_SERVER) && defined(USE_WINDOWS_API) && \
!defined(NO_FILESYSTEM)
/* Walks the RecvOpen CREAT/EXCL/TRUNC flag matrix on Windows, checking both
* the open result and the resulting file state for each case. */
static void TestSftpWindowsOpenFlagMatrix(void)
{
WOLFSSH_CTX* ctx;
WOLFSSH* ssh;
int rid = 500;
int reqId;
word32 idx;
word32 replySz;
const byte* reply;
const word32 hOff = WOLFSSH_SFTP_HEADER + UINT32_SZ; /* handle in reply */
WSTAT_T st;
byte handle[WOLFSSH_HANDLE_ID_SZ];
byte pkt[256];
char cwd[WOLFSSH_MAX_FILENAME];
char path[64];
word32 pathSz;
const char content[] = "0123456789";
ctx = wolfSSH_CTX_new(WOLFSSH_ENDPOINT_SERVER, NULL);
AssertNotNull(ctx);
ssh = wolfSSH_new(ctx);
AssertNotNull(ssh);
AssertIntEQ(wolfSSH_SFTP_TestRecvStateInit(ssh), WS_SUCCESS);
/* unique per-process fixture name so parallel runs don't collide */
WSNPRINTF(path, sizeof(path), "wolfssh_winflags_%lu.tmp",
(unsigned long)GetCurrentProcessId());
pathSz = (word32)WSTRLEN(path);
WMEMSET(cwd, 0, sizeof(cwd));
AssertNotNull(WGETCWD(ssh->fs, cwd, sizeof(cwd) - 1));
AssertIntEQ(wolfSSH_SFTP_SetDefaultPath(ssh, cwd), WS_SUCCESS);
(void)WREMOVE(ssh->fs, path);
/* WRITE only, no CREAT: must fail against a missing file, untouched. */
idx = 0;
SftpPutU32(pathSz, pkt + idx); idx += UINT32_SZ;
WMEMCPY(pkt + idx, path, pathSz); idx += pathSz;
SftpPutU32(WOLFSSH_FXF_WRITE, pkt + idx); idx += UINT32_SZ;
SftpPutU32(0, pkt + idx); idx += UINT32_SZ;
reqId = rid++;
AssertTrue(wolfSSH_SFTP_RecvOpen(ssh, reqId, pkt, idx) != WS_SUCCESS);
AssertSftpStatusReply(ssh, reqId, WOLFSSH_FTP_FAILURE);
AssertTrue(WSTAT(ssh->fs, path, &st) != 0);
/* WRITE|CREAT, no TRUNC: must create the missing file (OPEN_ALWAYS). */
idx = 0;
SftpPutU32(pathSz, pkt + idx); idx += UINT32_SZ;
WMEMCPY(pkt + idx, path, pathSz); idx += pathSz;
SftpPutU32(WOLFSSH_FXF_WRITE | WOLFSSH_FXF_CREAT, pkt + idx);
idx += UINT32_SZ;
SftpPutU32(0, pkt + idx); idx += UINT32_SZ;
AssertIntEQ(wolfSSH_SFTP_RecvOpen(ssh, rid++, pkt, idx), WS_SUCCESS);
reply = wolfSSH_SFTP_TestRecvReply(ssh, &replySz);
AssertNotNull(reply);
AssertTrue(replySz >= hOff + WOLFSSH_HANDLE_ID_SZ);
WMEMCPY(handle, reply + hOff, WOLFSSH_HANDLE_ID_SZ);
/* seed content through the handle just opened */
idx = 0;
SftpPutU32(WOLFSSH_HANDLE_ID_SZ, pkt + idx); idx += UINT32_SZ;
WMEMCPY(pkt + idx, handle, WOLFSSH_HANDLE_ID_SZ);
idx += WOLFSSH_HANDLE_ID_SZ;
SftpPutU32(0, pkt + idx); idx += UINT32_SZ; /* offset hi */
SftpPutU32(0, pkt + idx); idx += UINT32_SZ; /* offset lo */
SftpPutU32((word32)(sizeof(content) - 1), pkt + idx); idx += UINT32_SZ;
WMEMCPY(pkt + idx, content, sizeof(content) - 1);
idx += (word32)(sizeof(content) - 1);
AssertIntEQ(wolfSSH_SFTP_RecvWrite(ssh, rid++, pkt, idx), WS_SUCCESS);
idx = 0;
SftpPutU32(WOLFSSH_HANDLE_ID_SZ, pkt + idx); idx += UINT32_SZ;
WMEMCPY(pkt + idx, handle, WOLFSSH_HANDLE_ID_SZ);
idx += WOLFSSH_HANDLE_ID_SZ;
AssertIntEQ(wolfSSH_SFTP_RecvClose(ssh, rid++, pkt, idx), WS_SUCCESS);
AssertIntEQ(WSTAT(ssh->fs, path, &st), 0);
AssertIntEQ((int)st.st_size, (int)(sizeof(content) - 1));
/* WRITE|CREAT, no TRUNC, on the existing file: must not truncate it. */
idx = 0;
SftpPutU32(pathSz, pkt + idx); idx += UINT32_SZ;
WMEMCPY(pkt + idx, path, pathSz); idx += pathSz;
SftpPutU32(WOLFSSH_FXF_WRITE | WOLFSSH_FXF_CREAT, pkt + idx);
idx += UINT32_SZ;
SftpPutU32(0, pkt + idx); idx += UINT32_SZ;
AssertIntEQ(wolfSSH_SFTP_RecvOpen(ssh, rid++, pkt, idx), WS_SUCCESS);
reply = wolfSSH_SFTP_TestRecvReply(ssh, &replySz);
AssertNotNull(reply);
AssertTrue(replySz >= hOff + WOLFSSH_HANDLE_ID_SZ);
WMEMCPY(handle, reply + hOff, WOLFSSH_HANDLE_ID_SZ);
AssertIntEQ(WSTAT(ssh->fs, path, &st), 0);
AssertIntEQ((int)st.st_size, (int)(sizeof(content) - 1));
idx = 0;
SftpPutU32(WOLFSSH_HANDLE_ID_SZ, pkt + idx); idx += UINT32_SZ;
WMEMCPY(pkt + idx, handle, WOLFSSH_HANDLE_ID_SZ);
idx += WOLFSSH_HANDLE_ID_SZ;
AssertIntEQ(wolfSSH_SFTP_RecvClose(ssh, rid++, pkt, idx), WS_SUCCESS);
/* WRITE|CREAT|TRUNC: must truncate the existing file immediately. */
idx = 0;
SftpPutU32(pathSz, pkt + idx); idx += UINT32_SZ;
WMEMCPY(pkt + idx, path, pathSz); idx += pathSz;
SftpPutU32(WOLFSSH_FXF_WRITE | WOLFSSH_FXF_CREAT | WOLFSSH_FXF_TRUNC,
pkt + idx); idx += UINT32_SZ;
SftpPutU32(0, pkt + idx); idx += UINT32_SZ;
AssertIntEQ(wolfSSH_SFTP_RecvOpen(ssh, rid++, pkt, idx), WS_SUCCESS);
reply = wolfSSH_SFTP_TestRecvReply(ssh, &replySz);
AssertNotNull(reply);
AssertTrue(replySz >= hOff + WOLFSSH_HANDLE_ID_SZ);
WMEMCPY(handle, reply + hOff, WOLFSSH_HANDLE_ID_SZ);
AssertIntEQ(WSTAT(ssh->fs, path, &st), 0);
AssertIntEQ((int)st.st_size, 0);
idx = 0;
SftpPutU32(WOLFSSH_HANDLE_ID_SZ, pkt + idx); idx += UINT32_SZ;
WMEMCPY(pkt + idx, handle, WOLFSSH_HANDLE_ID_SZ);
idx += WOLFSSH_HANDLE_ID_SZ;
AssertIntEQ(wolfSSH_SFTP_RecvClose(ssh, rid++, pkt, idx), WS_SUCCESS);
/* WRITE|CREAT|EXCL against the existing file: must fail. */
idx = 0;
SftpPutU32(pathSz, pkt + idx); idx += UINT32_SZ;
WMEMCPY(pkt + idx, path, pathSz); idx += pathSz;
SftpPutU32(WOLFSSH_FXF_WRITE | WOLFSSH_FXF_CREAT | WOLFSSH_FXF_EXCL,
pkt + idx); idx += UINT32_SZ;
SftpPutU32(0, pkt + idx); idx += UINT32_SZ;
reqId = rid++;
AssertTrue(wolfSSH_SFTP_RecvOpen(ssh, reqId, pkt, idx) != WS_SUCCESS);
AssertSftpStatusReply(ssh, reqId, WOLFSSH_FTP_FAILURE);
(void)WREMOVE(ssh->fs, path);
/* WRITE|CREAT|EXCL against a missing path: must succeed. */
idx = 0;
SftpPutU32(pathSz, pkt + idx); idx += UINT32_SZ;
WMEMCPY(pkt + idx, path, pathSz); idx += pathSz;
SftpPutU32(WOLFSSH_FXF_WRITE | WOLFSSH_FXF_CREAT | WOLFSSH_FXF_EXCL,
pkt + idx); idx += UINT32_SZ;
SftpPutU32(0, pkt + idx); idx += UINT32_SZ;
AssertIntEQ(wolfSSH_SFTP_RecvOpen(ssh, rid++, pkt, idx), WS_SUCCESS);
reply = wolfSSH_SFTP_TestRecvReply(ssh, &replySz);
AssertNotNull(reply);
AssertTrue(replySz >= hOff + WOLFSSH_HANDLE_ID_SZ);
WMEMCPY(handle, reply + hOff, WOLFSSH_HANDLE_ID_SZ);
idx = 0;
SftpPutU32(WOLFSSH_HANDLE_ID_SZ, pkt + idx); idx += UINT32_SZ;
WMEMCPY(pkt + idx, handle, WOLFSSH_HANDLE_ID_SZ);
idx += WOLFSSH_HANDLE_ID_SZ;
AssertIntEQ(wolfSSH_SFTP_RecvClose(ssh, rid++, pkt, idx), WS_SUCCESS);
(void)WREMOVE(ssh->fs, path);
/* READ|WRITE|CREAT, no TRUNC, against a missing path: must create it. */
idx = 0;
SftpPutU32(pathSz, pkt + idx); idx += UINT32_SZ;
WMEMCPY(pkt + idx, path, pathSz); idx += pathSz;
SftpPutU32(WOLFSSH_FXF_READ | WOLFSSH_FXF_WRITE | WOLFSSH_FXF_CREAT,
pkt + idx); idx += UINT32_SZ;
SftpPutU32(0, pkt + idx); idx += UINT32_SZ;
AssertIntEQ(wolfSSH_SFTP_RecvOpen(ssh, rid++, pkt, idx), WS_SUCCESS);
reply = wolfSSH_SFTP_TestRecvReply(ssh, &replySz);
AssertNotNull(reply);
AssertTrue(replySz >= hOff + WOLFSSH_HANDLE_ID_SZ);
WMEMCPY(handle, reply + hOff, WOLFSSH_HANDLE_ID_SZ);
AssertIntEQ(WSTAT(ssh->fs, path, &st), 0);
idx = 0;
SftpPutU32(WOLFSSH_HANDLE_ID_SZ, pkt + idx); idx += UINT32_SZ;
WMEMCPY(pkt + idx, handle, WOLFSSH_HANDLE_ID_SZ);
idx += WOLFSSH_HANDLE_ID_SZ;
AssertIntEQ(wolfSSH_SFTP_RecvClose(ssh, rid++, pkt, idx), WS_SUCCESS);
(void)WREMOVE(ssh->fs, path);
wolfSSH_SFTP_TestRecvStateFree(ssh);
wolfSSH_free(ssh);
wolfSSH_CTX_free(ctx);
}
#endif /* !NO_WOLFSSH_SERVER && USE_WINDOWS_API && !NO_FILESYSTEM */
#if defined(WOLFSSL_NUCLEUS) && !defined(NO_WOLFSSH_MKTIME)
static void TestNucleusMonthConversion(void)
{
@ -11580,6 +11771,11 @@ int main(int argc, char** argv)
/* SETSTAT/FSETSTAT apply the attributes they acknowledge */
TestSftpSetStatAttributes();
#endif
#if !defined(NO_WOLFSSH_SERVER) && defined(USE_WINDOWS_API) && \
!defined(NO_FILESYSTEM)
/* RecvOpen's Windows open-flag matrix */
TestSftpWindowsOpenFlagMatrix();
#endif
#if defined(WOLFSSL_NUCLEUS) && !defined(NO_WOLFSSH_MKTIME)
TestNucleusMonthConversion();
#endif

5
wolfssh/wolfsftp.h
View File

@ -356,8 +356,7 @@ WOLFSSH_LOCAL void wolfSSH_SFTP_ShowSizes(void);
word32* handleSz);
WOLFSSH_API int wolfSSH_TestSftpSendCap(WOLFSSH* ssh, word32 cap);
WOLFSSH_API int wolfSSH_TestSftpStallPending(WOLFSSH* ssh, word32 count);
#if !defined(NO_WOLFSSH_SERVER) && !defined(USE_WINDOWS_API) && \
!defined(NO_FILESYSTEM)
#if !defined(NO_WOLFSSH_SERVER) && !defined(NO_FILESYSTEM)
WOLFSSH_API int wolfSSH_SFTP_TestRecvStateInit(WOLFSSH* ssh);
WOLFSSH_API const byte* wolfSSH_SFTP_TestRecvReply(WOLFSSH* ssh,
word32* sz);
@ -366,8 +365,10 @@ WOLFSSH_LOCAL void wolfSSH_SFTP_ShowSizes(void);
#ifndef NO_WOLFSSH_DIR
WOLFSSH_API int wolfSSH_SFTP_TestDirHandleCount(WOLFSSH* ssh);
#endif
#ifndef USE_WINDOWS_API
WOLFSSH_API int wolfSSH_SFTP_TestInvalidateHeadFd(WOLFSSH* ssh);
#endif
#endif
#if defined(WOLFSSL_NUCLEUS) && !defined(NO_WOLFSSH_MKTIME)
WOLFSSH_API int wolfSSH_TestNucleusMonthFromDate(word16 d);
#endif