forked from mirrors/nixpkgs
62ee86086c
Patches from direct URLs on github are not stable (comment headers change w/ server settings), hence why we usually use `fetchpatch`. In lieu of that, vendor the unstable patch.
211 lines
8.3 KiB
Diff
211 lines
8.3 KiB
Diff
From b9aa7c2495694d0527e4e7fd560a3f0f18556c72 Mon Sep 17 00:00:00 2001
|
|
From: Will Cosgrove <will@panic.com>
|
|
Date: Thu, 29 Aug 2019 15:14:19 -0700
|
|
Subject: [PATCH 1/5] packet.c: improve parsing of packets
|
|
|
|
file: packet.c
|
|
|
|
notes:
|
|
Use _libssh2_get_string API in SSH_MSG_DEBUG, additional uint32 bounds check in SSH_MSG_GLOBAL_REQUEST
|
|
---
|
|
src/packet.c | 30 +++++++++++++++---------------
|
|
1 file changed, 15 insertions(+), 15 deletions(-)
|
|
|
|
diff --git a/src/packet.c b/src/packet.c
|
|
index 38ab62944..ac69768cd 100644
|
|
--- a/src/packet.c
|
|
+++ b/src/packet.c
|
|
@@ -537,26 +537,26 @@ _libssh2_packet_add(LIBSSH2_SESSION * session, unsigned char *data,
|
|
case SSH_MSG_DEBUG:
|
|
if(datalen >= 2) {
|
|
int always_display = data[1];
|
|
-
|
|
+
|
|
if(datalen >= 6) {
|
|
- message_len = _libssh2_ntohu32(data + 2);
|
|
-
|
|
- if(message_len <= (datalen - 10)) {
|
|
- /* 6 = packet_type(1) + display(1) + message_len(4) */
|
|
- message = (char *) data + 6;
|
|
- language_len = _libssh2_ntohu32(data + 6 +
|
|
- message_len);
|
|
-
|
|
- if(language_len <= (datalen - 10 - message_len))
|
|
- language = (char *) data + 10 + message_len;
|
|
- }
|
|
+ struct string_buf buf;
|
|
+ buf.data = (unsigned char *)data;
|
|
+ buf.dataptr = buf.data;
|
|
+ buf.len = datalen;
|
|
+ buf.dataptr += 2; /* advance past type & always display */
|
|
+
|
|
+ _libssh2_get_string(&buf, &message, &message_len);
|
|
+ _libssh2_get_string(&buf, &language, &language_len);
|
|
}
|
|
|
|
if(session->ssh_msg_debug) {
|
|
- LIBSSH2_DEBUG(session, always_display, message,
|
|
- message_len, language, language_len);
|
|
+ LIBSSH2_DEBUG(session, always_display,
|
|
+ (const char *)message,
|
|
+ message_len, (const char *)language,
|
|
+ language_len);
|
|
}
|
|
}
|
|
+
|
|
/*
|
|
* _libssh2_debug will actually truncate this for us so
|
|
* that it's not an inordinate about of data
|
|
@@ -579,7 +579,7 @@ _libssh2_packet_add(LIBSSH2_SESSION * session, unsigned char *data,
|
|
uint32_t len = 0;
|
|
unsigned char want_reply = 0;
|
|
len = _libssh2_ntohu32(data + 1);
|
|
- if(datalen >= (6 + len)) {
|
|
+ if((len <= (UINT_MAX - 6) && (datalen >= (6 + len))) {
|
|
want_reply = data[5 + len];
|
|
_libssh2_debug(session,
|
|
LIBSSH2_TRACE_CONN,
|
|
|
|
From 8b3cf0b17c1b84a138bed9423a9e0743452b4de9 Mon Sep 17 00:00:00 2001
|
|
From: Will Cosgrove <will@panic.com>
|
|
Date: Thu, 29 Aug 2019 15:15:33 -0700
|
|
Subject: [PATCH 2/5] stray whitespace
|
|
|
|
---
|
|
src/packet.c | 2 +-
|
|
1 file changed, 1 insertion(+), 1 deletion(-)
|
|
|
|
diff --git a/src/packet.c b/src/packet.c
|
|
index ac69768cd..8908b2c5a 100644
|
|
--- a/src/packet.c
|
|
+++ b/src/packet.c
|
|
@@ -537,7 +537,7 @@ _libssh2_packet_add(LIBSSH2_SESSION * session, unsigned char *data,
|
|
case SSH_MSG_DEBUG:
|
|
if(datalen >= 2) {
|
|
int always_display = data[1];
|
|
-
|
|
+
|
|
if(datalen >= 6) {
|
|
struct string_buf buf;
|
|
buf.data = (unsigned char *)data;
|
|
|
|
From 1c6fa92b77e34d089493fe6d3e2c6c8775858b94 Mon Sep 17 00:00:00 2001
|
|
From: Will Cosgrove <will@panic.com>
|
|
Date: Thu, 29 Aug 2019 15:24:22 -0700
|
|
Subject: [PATCH 3/5] fixed type issue, updated SSH_MSG_DISCONNECT
|
|
|
|
SSH_MSG_DISCONNECT now also uses _libssh2_get API.
|
|
---
|
|
src/packet.c | 40 +++++++++++++++-------------------------
|
|
1 file changed, 15 insertions(+), 25 deletions(-)
|
|
|
|
diff --git a/src/packet.c b/src/packet.c
|
|
index 8908b2c5a..97f0cdd4b 100644
|
|
--- a/src/packet.c
|
|
+++ b/src/packet.c
|
|
@@ -419,8 +419,8 @@ _libssh2_packet_add(LIBSSH2_SESSION * session, unsigned char *data,
|
|
size_t datalen, int macstate)
|
|
{
|
|
int rc = 0;
|
|
- char *message = NULL;
|
|
- char *language = NULL;
|
|
+ unsigned char *message = NULL;
|
|
+ unsigned char *language = NULL;
|
|
size_t message_len = 0;
|
|
size_t language_len = 0;
|
|
LIBSSH2_CHANNEL *channelp = NULL;
|
|
@@ -472,33 +472,23 @@ _libssh2_packet_add(LIBSSH2_SESSION * session, unsigned char *data,
|
|
|
|
case SSH_MSG_DISCONNECT:
|
|
if(datalen >= 5) {
|
|
- size_t reason = _libssh2_ntohu32(data + 1);
|
|
+ uint32_t reason = 0;
|
|
+ struct string_buf buf;
|
|
+ buf.data = (unsigned char *)data;
|
|
+ buf.dataptr = buf.data;
|
|
+ buf.len = datalen;
|
|
+ buf.dataptr++; /* advance past type */
|
|
|
|
- if(datalen >= 9) {
|
|
- message_len = _libssh2_ntohu32(data + 5);
|
|
+ _libssh2_get_u32(&buf, &reason);
|
|
+ _libssh2_get_string(&buf, &message, &message_len);
|
|
+ _libssh2_get_string(&buf, &language, &language_len);
|
|
|
|
- if(message_len < datalen-13) {
|
|
- /* 9 = packet_type(1) + reason(4) + message_len(4) */
|
|
- message = (char *) data + 9;
|
|
-
|
|
- language_len =
|
|
- _libssh2_ntohu32(data + 9 + message_len);
|
|
- language = (char *) data + 9 + message_len + 4;
|
|
-
|
|
- if(language_len > (datalen-13-message_len)) {
|
|
- /* bad input, clear info */
|
|
- language = message = NULL;
|
|
- language_len = message_len = 0;
|
|
- }
|
|
- }
|
|
- else
|
|
- /* bad size, clear it */
|
|
- message_len = 0;
|
|
- }
|
|
if(session->ssh_msg_disconnect) {
|
|
- LIBSSH2_DISCONNECT(session, reason, message,
|
|
- message_len, language, language_len);
|
|
+ LIBSSH2_DISCONNECT(session, reason, (const char *)message,
|
|
+ message_len, (const char *)language,
|
|
+ language_len);
|
|
}
|
|
+
|
|
_libssh2_debug(session, LIBSSH2_TRACE_TRANS,
|
|
"Disconnect(%d): %s(%s)", reason,
|
|
message, language);
|
|
|
|
From 77616117cc9dbbdd0fe1157098435bff73a83a0f Mon Sep 17 00:00:00 2001
|
|
From: Will Cosgrove <will@panic.com>
|
|
Date: Thu, 29 Aug 2019 15:26:32 -0700
|
|
Subject: [PATCH 4/5] fixed stray (
|
|
|
|
bad paste
|
|
---
|
|
src/packet.c | 2 +-
|
|
1 file changed, 1 insertion(+), 1 deletion(-)
|
|
|
|
diff --git a/src/packet.c b/src/packet.c
|
|
index 97f0cdd4b..bd4c39e46 100644
|
|
--- a/src/packet.c
|
|
+++ b/src/packet.c
|
|
@@ -569,7 +569,7 @@ _libssh2_packet_add(LIBSSH2_SESSION * session, unsigned char *data,
|
|
uint32_t len = 0;
|
|
unsigned char want_reply = 0;
|
|
len = _libssh2_ntohu32(data + 1);
|
|
- if((len <= (UINT_MAX - 6) && (datalen >= (6 + len))) {
|
|
+ if(len <= (UINT_MAX - 6) && datalen >= (6 + len)) {
|
|
want_reply = data[5 + len];
|
|
_libssh2_debug(session,
|
|
LIBSSH2_TRACE_CONN,
|
|
|
|
From 436c45dc143cadc8c59afac6c4255be332856581 Mon Sep 17 00:00:00 2001
|
|
From: Will Cosgrove <will@panic.com>
|
|
Date: Thu, 29 Aug 2019 15:29:00 -0700
|
|
Subject: [PATCH 5/5] added additional parentheses for clarity
|
|
|
|
---
|
|
src/packet.c | 2 +-
|
|
1 file changed, 1 insertion(+), 1 deletion(-)
|
|
|
|
diff --git a/src/packet.c b/src/packet.c
|
|
index bd4c39e46..2e01bfc5d 100644
|
|
--- a/src/packet.c
|
|
+++ b/src/packet.c
|
|
@@ -569,7 +569,7 @@ _libssh2_packet_add(LIBSSH2_SESSION * session, unsigned char *data,
|
|
uint32_t len = 0;
|
|
unsigned char want_reply = 0;
|
|
len = _libssh2_ntohu32(data + 1);
|
|
- if(len <= (UINT_MAX - 6) && datalen >= (6 + len)) {
|
|
+ if((len <= (UINT_MAX - 6)) && (datalen >= (6 + len))) {
|
|
want_reply = data[5 + len];
|
|
_libssh2_debug(session,
|
|
LIBSSH2_TRACE_CONN,
|