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Upgrade libssh2 to 1.11.0

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This commit is contained in:
dmiller
2024-02-28 17:39:06 +00:00
parent f64e2fab07
commit 1fc984bc73
114 changed files with 24809 additions and 19351 deletions
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351
libssh2/src/misc.c
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@@ -39,39 +39,60 @@
#include "libssh2_priv.h"
#include "misc.h"
#include "blf.h"
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
#if defined(HAVE_DECL_SECUREZEROMEMORY) && HAVE_DECL_SECUREZEROMEMORY
#ifdef HAVE_WINDOWS_H
#include <windows.h>
#endif
#endif
#include <stdio.h>
#include <errno.h>
#include <assert.h>
#ifdef WIN32
/* Force parameter type. */
#define recv(s, b, l, f) recv((s), (b), (int)(l), (f))
#define send(s, b, l, f) send((s), (b), (int)(l), (f))
#endif
/* snprintf not in Visual Studio CRT and _snprintf dangerously incompatible.
We provide a safe wrapper if snprintf not found */
#ifdef LIBSSH2_SNPRINTF
#include <stdarg.h>
/* Want safe, 'n += snprintf(b + n ...)' like function. If cp_max_len is 1
* then assume cp is pointing to a null char and do nothing. Returns number
* number of chars placed in cp excluding the trailing null char. So for
* cp_max_len > 0 the return value is always < cp_max_len; for cp_max_len
* <= 0 the return value is 0 (and no chars are written to cp). */
int _libssh2_snprintf(char *cp, size_t cp_max_len, const char *fmt, ...)
{
va_list args;
int n;
if(cp_max_len < 2)
return 0;
va_start(args, fmt);
n = vsnprintf(cp, cp_max_len, fmt, args);
va_end(args);
return (n < (int)cp_max_len) ? n : (int)(cp_max_len - 1);
}
#endif
int _libssh2_error_flags(LIBSSH2_SESSION* session, int errcode,
const char *errmsg, int errflags)
{
if(!session) {
if(errmsg)
fprintf(stderr, "Session is NULL, error: %s\n", errmsg);
return errcode;
}
if(session->err_flags & LIBSSH2_ERR_FLAG_DUP)
LIBSSH2_FREE(session, (char *)session->err_msg);
session->err_code = errcode;
session->err_flags = 0;
if((errmsg != NULL) && ((errflags & LIBSSH2_ERR_FLAG_DUP) != 0)) {
if(errmsg && ((errflags & LIBSSH2_ERR_FLAG_DUP) != 0)) {
size_t len = strlen(errmsg);
char *copy = LIBSSH2_ALLOC(session, len + 1);
if(copy) {
@@ -91,8 +112,8 @@ int _libssh2_error_flags(LIBSSH2_SESSION* session, int errcode,
/* if this is EAGAIN and we're in non-blocking mode, don't generate
a debug output for this */
return errcode;
_libssh2_debug(session, LIBSSH2_TRACE_ERROR, "%d - %s", session->err_code,
session->err_msg);
_libssh2_debug((session, LIBSSH2_TRACE_ERROR, "%d - %s", session->err_code,
session->err_msg));
#endif
return errcode;
@@ -135,7 +156,7 @@ _libssh2_recv(libssh2_socket_t sock, void *buffer, size_t length,
{
ssize_t rc;
(void) abstract;
(void)abstract;
rc = recv(sock, buffer, length, flags);
#ifdef WIN32
@@ -168,7 +189,7 @@ _libssh2_send(libssh2_socket_t sock, const void *buffer, size_t length,
{
ssize_t rc;
(void) abstract;
(void)abstract;
rc = send(sock, buffer, length, flags);
#ifdef WIN32
@@ -177,10 +198,10 @@ _libssh2_send(libssh2_socket_t sock, const void *buffer, size_t length,
#else
if(rc < 0) {
#ifdef EWOULDBLOCK /* For VMS and other special unixes */
if(errno == EWOULDBLOCK)
return -EAGAIN;
if(errno == EWOULDBLOCK)
return -EAGAIN;
#endif
return -errno;
return -errno;
}
#endif
return rc;
@@ -188,13 +209,13 @@ _libssh2_send(libssh2_socket_t sock, const void *buffer, size_t length,
/* libssh2_ntohu32
*/
unsigned int
uint32_t
_libssh2_ntohu32(const unsigned char *buf)
{
return (((unsigned int)buf[0] << 24)
| ((unsigned int)buf[1] << 16)
| ((unsigned int)buf[2] << 8)
| ((unsigned int)buf[3]));
return ((uint32_t)buf[0] << 24)
| ((uint32_t)buf[1] << 16)
| ((uint32_t)buf[2] << 8)
| ((uint32_t)buf[3]);
}
@@ -203,14 +224,14 @@ _libssh2_ntohu32(const unsigned char *buf)
libssh2_uint64_t
_libssh2_ntohu64(const unsigned char *buf)
{
unsigned long msl, lsl;
msl = ((libssh2_uint64_t)buf[0] << 24) | ((libssh2_uint64_t)buf[1] << 16)
| ((libssh2_uint64_t)buf[2] << 8) | (libssh2_uint64_t)buf[3];
lsl = ((libssh2_uint64_t)buf[4] << 24) | ((libssh2_uint64_t)buf[5] << 16)
| ((libssh2_uint64_t)buf[6] << 8) | (libssh2_uint64_t)buf[7];
return ((libssh2_uint64_t)msl <<32) | lsl;
return ((libssh2_uint64_t)buf[0] << 56)
| ((libssh2_uint64_t)buf[1] << 48)
| ((libssh2_uint64_t)buf[2] << 40)
| ((libssh2_uint64_t)buf[3] << 32)
| ((libssh2_uint64_t)buf[4] << 24)
| ((libssh2_uint64_t)buf[5] << 16)
| ((libssh2_uint64_t)buf[6] << 8)
| ((libssh2_uint64_t)buf[7]);
}
/* _libssh2_htonu32
@@ -218,7 +239,7 @@ _libssh2_ntohu64(const unsigned char *buf)
void
_libssh2_htonu32(unsigned char *buf, uint32_t value)
{
buf[0] = (value >> 24) & 0xFF;
buf[0] = (unsigned char)((value >> 24) & 0xFF);
buf[1] = (value >> 16) & 0xFF;
buf[2] = (value >> 8) & 0xFF;
buf[3] = value & 0xFF;
@@ -234,13 +255,50 @@ void _libssh2_store_u32(unsigned char **buf, uint32_t value)
/* _libssh2_store_str
*/
void _libssh2_store_str(unsigned char **buf, const char *str, size_t len)
int _libssh2_store_str(unsigned char **buf, const char *str, size_t len)
{
_libssh2_store_u32(buf, (uint32_t)len);
if(len) {
memcpy(*buf, str, len);
*buf += len;
uint32_t len_stored = (uint32_t)len;
_libssh2_store_u32(buf, len_stored);
if(len_stored) {
memcpy(*buf, str, len_stored);
*buf += len_stored;
}
assert(len_stored == len);
return len_stored == len;
}
/* _libssh2_store_bignum2_bytes
*/
int _libssh2_store_bignum2_bytes(unsigned char **buf,
const unsigned char *bytes,
size_t len)
{
uint32_t len_stored;
uint32_t extraByte;
const unsigned char *p;
for(p = bytes; len > 0 && *p == 0; --len, ++p) {}
extraByte = (len > 0 && (p[0] & 0x80) != 0);
len_stored = (uint32_t)len;
if(extraByte && len_stored == 0xffffffff)
len_stored--;
_libssh2_store_u32(buf, len_stored + extraByte);
if(extraByte) {
*buf[0] = 0;
*buf += 1;
}
if(len_stored) {
memcpy(*buf, p, len_stored);
*buf += len_stored;
}
assert(len_stored == len);
return len_stored == len;
}
/* Base64 Conversion */
@@ -266,26 +324,46 @@ static const short base64_reverse_table[256] = {
/* libssh2_base64_decode
*
* Decode a base64 chunk and store it into a newly alloc'd buffer
* Legacy public function. DEPRECATED.
*/
LIBSSH2_API int
libssh2_base64_decode(LIBSSH2_SESSION *session, char **data,
unsigned int *datalen, const char *src,
unsigned int src_len)
{
unsigned char *s, *d;
short v;
int i = 0, len = 0;
int rc;
size_t dlen;
*data = LIBSSH2_ALLOC(session, (3 * src_len / 4) + 1);
rc = _libssh2_base64_decode(session, data, &dlen, src, src_len);
if(datalen)
*datalen = (unsigned int)dlen;
return rc;
}
/* _libssh2_base64_decode
*
* Decode a base64 chunk and store it into a newly alloc'd buffer
*/
int _libssh2_base64_decode(LIBSSH2_SESSION *session,
char **data, size_t *datalen,
const char *src, size_t src_len)
{
unsigned char *d;
const char *s;
short v;
ssize_t i = 0, len = 0;
*data = LIBSSH2_ALLOC(session, ((src_len / 4) * 3) + 1);
d = (unsigned char *) *data;
if(!d) {
return _libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory for base64 decoding");
}
for(s = (unsigned char *) src; ((char *) s) < (src + src_len); s++) {
v = base64_reverse_table[*s];
for(s = src; s < (src + src_len); s++) {
v = base64_reverse_table[(unsigned char)*s];
if(v < 0)
continue;
switch(i % 4) {
@@ -293,15 +371,15 @@ libssh2_base64_decode(LIBSSH2_SESSION *session, char **data,
d[len] = (unsigned char)(v << 2);
break;
case 1:
d[len++] |= v >> 4;
d[len++] |= (unsigned char)(v >> 4);
d[len] = (unsigned char)(v << 4);
break;
case 2:
d[len++] |= v >> 2;
d[len++] |= (unsigned char)(v >> 2);
d[len] = (unsigned char)(v << 6);
break;
case 3:
d[len++] |= v;
d[len++] |= (unsigned char)v;
break;
}
i++;
@@ -320,10 +398,10 @@ libssh2_base64_decode(LIBSSH2_SESSION *session, char **data,
/* ---- Base64 Encoding/Decoding Table --- */
static const char table64[]=
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
/*
* _libssh2_base64_encode()
* _libssh2_base64_encode
*
* Returns the length of the newly created base64 string. The third argument
* is a pointer to an allocated area holding the base64 data. If something
@@ -344,11 +422,11 @@ size_t _libssh2_base64_encode(LIBSSH2_SESSION *session,
*outptr = NULL; /* set to NULL in case of failure before we reach the
end */
if(0 == insize)
if(insize == 0)
insize = strlen(indata);
base64data = output = LIBSSH2_ALLOC(session, insize * 4 / 3 + 4);
if(NULL == output)
if(!output)
return 0;
while(insize > 0) {
@@ -372,22 +450,22 @@ size_t _libssh2_base64_encode(LIBSSH2_SESSION *session,
switch(inputparts) {
case 1: /* only one byte read */
snprintf(output, 5, "%c%c==",
table64[obuf[0]],
table64[obuf[1]]);
output[0] = table64[obuf[0]];
output[1] = table64[obuf[1]];
output[2] = '=';
output[3] = '=';
break;
case 2: /* two bytes read */
snprintf(output, 5, "%c%c%c=",
table64[obuf[0]],
table64[obuf[1]],
table64[obuf[2]]);
output[0] = table64[obuf[0]];
output[1] = table64[obuf[1]];
output[2] = table64[obuf[2]];
output[3] = '=';
break;
default:
snprintf(output, 5, "%c%c%c%c",
table64[obuf[0]],
table64[obuf[1]],
table64[obuf[2]],
table64[obuf[3]]);
output[0] = table64[obuf[0]];
output[1] = table64[obuf[1]];
output[2] = table64[obuf[2]];
output[3] = table64[obuf[3]];
break;
}
output += 4;
@@ -425,13 +503,14 @@ libssh2_trace_sethandler(LIBSSH2_SESSION *session, void *handler_context,
}
void
_libssh2_debug(LIBSSH2_SESSION * session, int context, const char *format, ...)
_libssh2_debug_low(LIBSSH2_SESSION * session, int context, const char *format,
...)
{
char buffer[1536];
int len, msglen, buflen = sizeof(buffer);
va_list vargs;
struct timeval now;
static int firstsec;
static long firstsec;
static const char *const contexts[] = {
"Unknown",
"Transport",
@@ -461,7 +540,7 @@ _libssh2_debug(LIBSSH2_SESSION * session, int context, const char *format, ...)
}
}
_libssh2_gettimeofday(&now, NULL);
gettimeofday(&now, NULL);
if(!firstsec) {
firstsec = now.tv_sec;
}
@@ -492,8 +571,8 @@ _libssh2_debug(LIBSSH2_SESSION * session, int context, const char *format, ...)
LIBSSH2_API int
libssh2_trace(LIBSSH2_SESSION * session, int bitmask)
{
(void) session;
(void) bitmask;
(void)session;
(void)bitmask;
return 0;
}
@@ -501,9 +580,9 @@ LIBSSH2_API int
libssh2_trace_sethandler(LIBSSH2_SESSION *session, void *handler_context,
libssh2_trace_handler_func callback)
{
(void) session;
(void) handler_context;
(void) callback;
(void)session;
(void)handler_context;
(void)callback;
return 0;
}
#endif
@@ -600,10 +679,10 @@ void _libssh2_list_insert(struct list_node *after, /* insert before this */
#endif
/* this define is defined in misc.h for the correct platforms */
#ifdef LIBSSH2_GETTIMEOFDAY_WIN32
/* Defined in libssh2_priv.h for the correct platforms */
#ifdef LIBSSH2_GETTIMEOFDAY
/*
* gettimeofday
* _libssh2_gettimeofday
* Implementation according to:
* The Open Group Base Specifications Issue 6
* IEEE Std 1003.1, 2004 Edition
@@ -624,27 +703,31 @@ void _libssh2_list_insert(struct list_node *after, /* insert before this */
* Danny Smith <dannysmith@users.sourceforge.net>
*/
/* Offset between 1/1/1601 and 1/1/1970 in 100 nanosec units */
#define _W32_FT_OFFSET (116444736000000000)
int __cdecl _libssh2_gettimeofday(struct timeval *tp, void *tzp)
int _libssh2_gettimeofday(struct timeval *tp, void *tzp)
{
union {
unsigned __int64 ns100; /*time since 1 Jan 1601 in 100ns units */
FILETIME ft;
} _now;
(void)tzp;
if(tp) {
#ifdef WIN32
/* Offset between 1601-01-01 and 1970-01-01 in 100 nanosec units */
#define _WIN32_FT_OFFSET (116444736000000000)
union {
libssh2_uint64_t ns100; /* time since 1 Jan 1601 in 100ns units */
FILETIME ft;
} _now;
GetSystemTimeAsFileTime(&_now.ft);
tp->tv_usec = (long)((_now.ns100 / 10) % 1000000);
tp->tv_sec = (long)((_now.ns100 - _W32_FT_OFFSET) / 10000000);
tp->tv_sec = (long)((_now.ns100 - _WIN32_FT_OFFSET) / 10000000);
#else
/* Platforms without a native implementation or local replacement */
tp->tv_usec = 0;
tp->tv_sec = 0;
#endif
}
/* Always return 0 as per Open Group Base Specifications Issue 6.
Do not set errno on error. */
return 0;
}
#endif
void *_libssh2_calloc(LIBSSH2_SESSION* session, size_t size)
@@ -687,34 +770,23 @@ void _libssh2_aes_ctr_increment(unsigned char *ctr,
}
}
#ifdef WIN32
static void * (__cdecl * const volatile memset_libssh)(void *, int, size_t) =
memset;
#else
#ifdef LIBSSH2_MEMZERO
static void * (* const volatile memset_libssh)(void *, int, size_t) = memset;
#endif
void _libssh2_explicit_zero(void *buf, size_t size)
void _libssh2_memzero(void *buf, size_t size)
{
#if defined(HAVE_DECL_SECUREZEROMEMORY) && HAVE_DECL_SECUREZEROMEMORY
SecureZeroMemory(buf, size);
(void)memset_libssh; /* Silence unused variable warning */
#elif defined(HAVE_MEMSET_S)
(void)memset_s(buf, size, 0, size);
(void)memset_libssh; /* Silence unused variable warning */
#else
memset_libssh(buf, 0, size);
#endif
}
#endif
/* String buffer */
struct string_buf* _libssh2_string_buf_new(LIBSSH2_SESSION *session)
struct string_buf *_libssh2_string_buf_new(LIBSSH2_SESSION *session)
{
struct string_buf *ret;
ret = _libssh2_calloc(session, sizeof(*ret));
if(ret == NULL)
if(!ret)
return NULL;
return ret;
@@ -722,16 +794,39 @@ struct string_buf* _libssh2_string_buf_new(LIBSSH2_SESSION *session)
void _libssh2_string_buf_free(LIBSSH2_SESSION *session, struct string_buf *buf)
{
if(buf == NULL)
if(!buf)
return;
if(buf->data != NULL)
if(buf->data)
LIBSSH2_FREE(session, buf->data);
LIBSSH2_FREE(session, buf);
buf = NULL;
}
int _libssh2_get_byte(struct string_buf *buf, unsigned char *out)
{
if(!_libssh2_check_length(buf, 1)) {
return -1;
}
*out = buf->dataptr[0];
buf->dataptr += 1;
return 0;
}
int _libssh2_get_boolean(struct string_buf *buf, unsigned char *out)
{
if(!_libssh2_check_length(buf, 1)) {
return -1;
}
*out = buf->dataptr[0] == 0 ? 0 : 1;
buf->dataptr += 1;
return 0;
}
int _libssh2_get_u32(struct string_buf *buf, uint32_t *out)
{
if(!_libssh2_check_length(buf, 4)) {
@@ -769,7 +864,7 @@ int _libssh2_get_string(struct string_buf *buf, unsigned char **outbuf,
size_t *outlen)
{
uint32_t data_len;
if(_libssh2_get_u32(buf, &data_len) != 0) {
if(!buf || _libssh2_get_u32(buf, &data_len) != 0) {
return -1;
}
if(!_libssh2_check_length(buf, data_len)) {
@@ -794,12 +889,18 @@ int _libssh2_copy_string(LIBSSH2_SESSION *session, struct string_buf *buf,
return -1;
}
*outbuf = LIBSSH2_ALLOC(session, str_len);
if(*outbuf) {
memcpy(*outbuf, str, str_len);
if(str_len) {
*outbuf = LIBSSH2_ALLOC(session, str_len);
if(*outbuf) {
memcpy(*outbuf, str, str_len);
}
else {
return -1;
}
}
else {
return -1;
*outlen = 0;
*outbuf = NULL;
}
if(outlen)
@@ -848,25 +949,11 @@ int _libssh2_check_length(struct string_buf *buf, size_t len)
{
unsigned char *endp = &buf->data[buf->len];
size_t left = endp - buf->dataptr;
return ((len <= left) && (left <= buf->len));
return (len <= left) && (left <= buf->len);
}
/* Wrappers */
int _libssh2_bcrypt_pbkdf(const char *pass,
size_t passlen,
const uint8_t *salt,
size_t saltlen,
uint8_t *key,
size_t keylen,
unsigned int rounds)
int _libssh2_eob(struct string_buf *buf)
{
/* defined in bcrypt_pbkdf.c */
return bcrypt_pbkdf(pass,
passlen,
salt,
saltlen,
key,
keylen,
rounds);
unsigned char *endp = &buf->data[buf->len];
return buf->dataptr >= endp;
}