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authorAris Adamantiadis <aris@0xbadc0de.be>2010-01-23 22:59:10 +0100
committerAris Adamantiadis <aris@0xbadc0de.be>2010-01-23 22:59:10 +0100
commit68f53540dfbd1cc077f8a91587335207fd7ee5c0 (patch)
tree6bd17d77a36907bb36bd4544eb2c37a94563c116 /libssh/packet.c
parent48ba9c9bc1b6845a2c65773e91fd95a82e2f71aa (diff)
downloadlibssh-68f53540dfbd1cc077f8a91587335207fd7ee5c0.tar.gz
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Move SSH-1 specific packet functions in packet1.c
Diffstat (limited to 'libssh/packet.c')
-rw-r--r--libssh/packet.c324
1 files changed, 0 insertions, 324 deletions
diff --git a/libssh/packet.c b/libssh/packet.c
index 1690be6f..cbc6f0b6 100644
--- a/libssh/packet.c
+++ b/libssh/packet.c
@@ -34,7 +34,6 @@
#include "libssh/priv.h"
#include "libssh/ssh2.h"
-#include "libssh/ssh1.h"
#include "libssh/crypto.h"
#include "libssh/buffer.h"
#include "libssh/packet.h"
@@ -106,11 +105,6 @@ static int macsize=SHA_DIGEST_LEN;
/* SSH_OK if it has read at least len bytes, otherwise, SSH_AGAIN. */
/* in blocking mode, it will read at least len bytes and will block until it's ok. */
-
-#define PACKET_STATE_INIT 0
-#define PACKET_STATE_SIZEREAD 1
-#define PACKET_STATE_PROCESSING 2
-
/** @internal
* @handles a data received event. It then calls the handlers for the different packet types
* or and exception handler callback.
@@ -358,158 +352,6 @@ error:
leave_function();
}
-#ifdef WITH_SSH1
-/* a slighty modified packet_read2() for SSH-1 protocol
- * TODO: should be transformed in an asynchronous socket callback
- */
-int packet_read(ssh_session session) {
- void *packet = NULL;
- int rc = SSH_ERROR;
- int to_be_read;
- uint32_t padding;
- uint32_t crc;
- uint32_t len;
-
- enter_function();
-
- if(!session->alive) {
- goto error;
- }
-
- switch (session->packet_state){
- case PACKET_STATE_INIT:
- memset(&session->in_packet, 0, sizeof(PACKET));
-
- if (session->in_buffer) {
- if (buffer_reinit(session->in_buffer) < 0) {
- goto error;
- }
- } else {
- session->in_buffer = buffer_new();
- if (session->in_buffer == NULL) {
- goto error;
- }
- }
-
- rc = ssh_socket_read(session->socket, &len, sizeof(uint32_t));
- if (rc != SSH_OK) {
- goto error;
- }
-
- rc = SSH_ERROR;
-
- /* len is not encrypted */
- len = ntohl(len);
- if (len > MAX_PACKET_LEN) {
- ssh_set_error(session, SSH_FATAL,
- "read_packet(): Packet len too high (%u %.8x)", len, len);
- goto error;
- }
-
- ssh_log(session, SSH_LOG_PACKET, "Reading a %d bytes packet", len);
-
- session->in_packet.len = len;
- session->packet_state = PACKET_STATE_SIZEREAD;
- case PACKET_STATE_SIZEREAD:
- len = session->in_packet.len;
- /* SSH-1 has a fixed padding lenght */
- padding = 8 - (len % 8);
- to_be_read = len + padding;
-
- /* it is _not_ possible that to_be_read be < 8. */
- packet = malloc(to_be_read);
- if (packet == NULL) {
- ssh_set_error(session, SSH_FATAL, "Not enough space");
- goto error;
- }
-
- rc = ssh_socket_read(session->socket, packet, to_be_read);
- if(rc != SSH_OK) {
- SAFE_FREE(packet);
- goto error;
- }
- rc = SSH_ERROR;
-
- if (buffer_add_data(session->in_buffer,packet,to_be_read) < 0) {
- SAFE_FREE(packet);
- goto error;
- }
- SAFE_FREE(packet);
-
-#ifdef DEBUG_CRYPTO
- ssh_print_hexa("read packet:", buffer_get(session->in_buffer),
- buffer_get_len(session->in_buffer));
-#endif
- if (session->current_crypto) {
- /*
- * We decrypt everything, missing the lenght part (which was
- * previously read, unencrypted, and is not part of the buffer
- */
- if (packet_decrypt(session,
- buffer_get(session->in_buffer),
- buffer_get_len(session->in_buffer)) < 0) {
- ssh_set_error(session, SSH_FATAL, "Packet decrypt error");
- goto error;
- }
- }
-#ifdef DEBUG_CRYPTO
- ssh_print_hexa("read packet decrypted:", buffer_get(session->in_buffer),
- buffer_get_len(session->in_buffer));
-#endif
- ssh_log(session, SSH_LOG_PACKET, "%d bytes padding", padding);
- if(((len + padding) != buffer_get_rest_len(session->in_buffer)) ||
- ((len + padding) < sizeof(uint32_t))) {
- ssh_log(session, SSH_LOG_RARE, "no crc32 in packet");
- ssh_set_error(session, SSH_FATAL, "no crc32 in packet");
- goto error;
- }
-
- memcpy(&crc,
- (unsigned char *)buffer_get_rest(session->in_buffer) + (len+padding) - sizeof(uint32_t),
- sizeof(uint32_t));
- buffer_pass_bytes_end(session->in_buffer, sizeof(uint32_t));
- crc = ntohl(crc);
- if (ssh_crc32(buffer_get_rest(session->in_buffer),
- (len + padding) - sizeof(uint32_t)) != crc) {
-#ifdef DEBUG_CRYPTO
- ssh_print_hexa("crc32 on",buffer_get_rest(session->in_buffer),
- len + padding - sizeof(uint32_t));
-#endif
- ssh_log(session, SSH_LOG_RARE, "Invalid crc32");
- ssh_set_error(session, SSH_FATAL,
- "Invalid crc32: expected %.8x, got %.8x",
- crc,
- ssh_crc32(buffer_get_rest(session->in_buffer),
- len + padding - sizeof(uint32_t)));
- goto error;
- }
- /* pass the padding */
- buffer_pass_bytes(session->in_buffer, padding);
- ssh_log(session, SSH_LOG_PACKET, "The packet is valid");
-
-/* TODO FIXME
-#if defined(HAVE_LIBZ) && defined(WITH_LIBZ)
- if(session->current_crypto && session->current_crypto->do_compress_in){
- decompress_buffer(session,session->in_buffer);
- }
-#endif
-*/
- session->recv_seq++;
- session->packet_state=PACKET_STATE_INIT;
-
- leave_function();
- return SSH_OK;
- } /* switch */
-
- ssh_set_error(session, SSH_FATAL,
- "Invalid state into packet_read1(): %d",
- session->packet_state);
-error:
- leave_function();
- return rc;
-}
-
-#endif /* WITH_SSH1 */
int packet_translate(ssh_session session) {
enter_function();
@@ -644,85 +486,6 @@ error:
return rc; /* SSH_OK, AGAIN or ERROR */
}
-#ifdef WITH_SSH1
-static int packet_send1(ssh_session session) {
- unsigned int blocksize = (session->current_crypto ?
- session->current_crypto->out_cipher->blocksize : 8);
- uint32_t currentlen = buffer_get_len(session->out_buffer) + sizeof(uint32_t);
- char padstring[32] = {0};
- int rc = SSH_ERROR;
- uint32_t finallen;
- uint32_t crc;
- uint8_t padding;
-
- enter_function();
- ssh_log(session,SSH_LOG_PACKET,"Sending a %d bytes long packet",currentlen);
-
-/* TODO FIXME
-#if defined(HAVE_LIBZ) && defined(WITH_LIBZ)
- if (session->current_crypto && session->current_crypto->do_compress_out) {
- if (compress_buffer(session, session->out_buffer) < 0) {
- goto error;
- }
- currentlen = buffer_get_len(session->out_buffer);
- }
-#endif
-*/
- padding = blocksize - (currentlen % blocksize);
- if (session->current_crypto) {
- ssh_get_random(padstring, padding, 0);
- } else {
- memset(padstring, 0, padding);
- }
-
- finallen = htonl(currentlen);
- ssh_log(session, SSH_LOG_PACKET,
- "%d bytes after comp + %d padding bytes = %d bytes packet",
- currentlen, padding, ntohl(finallen));
-
- if (buffer_prepend_data(session->out_buffer, &padstring, padding) < 0) {
- goto error;
- }
- if (buffer_prepend_data(session->out_buffer, &finallen, sizeof(uint32_t)) < 0) {
- goto error;
- }
-
- crc = ssh_crc32((char *)buffer_get(session->out_buffer) + sizeof(uint32_t),
- buffer_get_len(session->out_buffer) - sizeof(uint32_t));
-
- if (buffer_add_u32(session->out_buffer, ntohl(crc)) < 0) {
- goto error;
- }
-
-#ifdef DEBUG_CRYPTO
- ssh_print_hexa("Clear packet", buffer_get(session->out_buffer),
- buffer_get_len(session->out_buffer));
-#endif
-
- packet_encrypt(session, (unsigned char *)buffer_get(session->out_buffer) + sizeof(uint32_t),
- buffer_get_len(session->out_buffer) - sizeof(uint32_t));
-
-#ifdef DEBUG_CRYPTO
- ssh_print_hexa("encrypted packet",buffer_get(session->out_buffer),
- buffer_get_len(session->out_buffer));
-#endif
- if (ssh_socket_write(session->socket, buffer_get(session->out_buffer),
- buffer_get_len(session->out_buffer)) == SSH_ERROR) {
- goto error;
- }
-
- rc = packet_flush(session, 0);
- session->send_seq++;
-
- if (buffer_reinit(session->out_buffer) < 0) {
- rc = SSH_ERROR;
- }
-error:
- leave_function();
- return rc; /* SSH_OK, AGAIN or ERROR */
-}
-
-#endif /* WITH_SSH1 */
int packet_send(ssh_session session) {
#ifdef WITH_SSH1
@@ -733,92 +496,5 @@ int packet_send(ssh_session session) {
return packet_send2(session);
}
-#ifdef WITH_SSH1
-static void packet_parse(ssh_session session) {
- uint8_t type = session->in_packet.type;
-
- if (session->version == 1) {
- /* SSH-1 */
- switch(type) {
- case SSH_MSG_DISCONNECT:
- ssh_log(session, SSH_LOG_PACKET, "Received SSH_MSG_DISCONNECT");
- ssh_set_error(session, SSH_FATAL, "Received SSH_MSG_DISCONNECT");
-
- ssh_socket_close(session->socket);
- session->alive = 0;
- return;
- case SSH_SMSG_STDOUT_DATA:
- case SSH_SMSG_STDERR_DATA:
- case SSH_SMSG_EXITSTATUS:
- channel_handle1(session,type);
- return;
- case SSH_MSG_DEBUG:
- case SSH_MSG_IGNORE:
- break;
- default:
- ssh_log(session, SSH_LOG_PACKET,
- "Unexpected message code %d", type);
- }
- return;
- } else {
- }
-}
-
-int packet_wait(ssh_session session, int type, int blocking) {
-
- enter_function();
-
- ssh_log(session, SSH_LOG_PROTOCOL, "packet_wait1 waiting for %d", type);
-
- do {
- if ((packet_read(session) != SSH_OK) ||
- (packet_translate(session) != SSH_OK)) {
- leave_function();
- return SSH_ERROR;
- }
- ssh_log(session, SSH_LOG_PACKET, "packet_wait1() received a type %d packet",
- session->in_packet.type);
- switch (session->in_packet.type) {
- case SSH_MSG_DISCONNECT:
- packet_parse(session);
- leave_function();
- return SSH_ERROR;
- case SSH_SMSG_STDOUT_DATA:
- case SSH_SMSG_STDERR_DATA:
- case SSH_SMSG_EXITSTATUS:
- if (channel_handle1(session,type) < 0) {
- leave_function();
- return SSH_ERROR;
- }
- break;
- case SSH_MSG_DEBUG:
- case SSH_MSG_IGNORE:
- break;
- /* case SSH2_MSG_CHANNEL_CLOSE:
- packet_parse(session);
- break;;
- */
- default:
- if (type && (type != session->in_packet.type)) {
- ssh_set_error(session, SSH_FATAL,
- "packet_wait1(): Received a %d type packet, but expected %d\n",
- session->in_packet.type, type);
- leave_function();
- return SSH_ERROR;
- }
- leave_function();
- return SSH_OK;
- }
-
- if (blocking == 0) {
- leave_function();
- return SSH_OK;
- }
- } while(1);
-
- leave_function();
- return SSH_OK;
-}
-#endif /* WITH_SSH1 */
/* vim: set ts=2 sw=2 et cindent: */