packet.c (116791) | packet.c (124208) |
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1/* 2 * Author: Tatu Ylonen <ylo@cs.hut.fi> 3 * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland 4 * All rights reserved 5 * This file contains code implementing the packet protocol and communication 6 * with the other side. This same code is used both on client and server side. 7 * 8 * As far as I am concerned, the code I have written for this software --- 23 unchanged lines hidden (view full) --- 32 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 33 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 34 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 35 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 36 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39#include "includes.h" | 1/* 2 * Author: Tatu Ylonen <ylo@cs.hut.fi> 3 * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland 4 * All rights reserved 5 * This file contains code implementing the packet protocol and communication 6 * with the other side. This same code is used both on client and server side. 7 * 8 * As far as I am concerned, the code I have written for this software --- 23 unchanged lines hidden (view full) --- 32 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 33 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 34 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 35 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 36 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39#include "includes.h" |
40RCSID("$OpenBSD: packet.c,v 1.104 2003/04/01 10:22:21 markus Exp $"); | 40RCSID("$OpenBSD: packet.c,v 1.110 2003/09/19 09:02:02 markus Exp $"); |
41 | 41 |
42#include "openbsd-compat/sys-queue.h" 43 |
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42#include "xmalloc.h" 43#include "buffer.h" 44#include "packet.h" 45#include "bufaux.h" 46#include "crc32.h" 47#include "getput.h" 48 49#include "compress.h" --- 51 unchanged lines hidden (view full) --- 101/* Scratch buffer for packet compression/decompression. */ 102static Buffer compression_buffer; 103static int compression_buffer_ready = 0; 104 105/* Flag indicating whether packet compression/decompression is enabled. */ 106static int packet_compression = 0; 107 108/* default maximum packet size */ | 44#include "xmalloc.h" 45#include "buffer.h" 46#include "packet.h" 47#include "bufaux.h" 48#include "crc32.h" 49#include "getput.h" 50 51#include "compress.h" --- 51 unchanged lines hidden (view full) --- 103/* Scratch buffer for packet compression/decompression. */ 104static Buffer compression_buffer; 105static int compression_buffer_ready = 0; 106 107/* Flag indicating whether packet compression/decompression is enabled. */ 108static int packet_compression = 0; 109 110/* default maximum packet size */ |
109int max_packet_size = 32768; | 111u_int max_packet_size = 32768; |
110 111/* Flag indicating whether this module has been initialized. */ 112static int initialized = 0; 113 114/* Set to true if the connection is interactive. */ 115static int interactive_mode = 0; 116 117/* Session key information for Encryption and MAC */ 118Newkeys *newkeys[MODE_MAX]; | 112 113/* Flag indicating whether this module has been initialized. */ 114static int initialized = 0; 115 116/* Set to true if the connection is interactive. */ 117static int interactive_mode = 0; 118 119/* Session key information for Encryption and MAC */ 120Newkeys *newkeys[MODE_MAX]; |
119static u_int32_t read_seqnr = 0; 120static u_int32_t send_seqnr = 0; | 121static struct packet_state { 122 u_int32_t seqnr; 123 u_int32_t packets; 124 u_int64_t blocks; 125} p_read, p_send; |
121 | 126 |
127static u_int64_t max_blocks_in, max_blocks_out; 128static u_int32_t rekey_limit; 129 |
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122/* Session key for protocol v1 */ 123static u_char ssh1_key[SSH_SESSION_KEY_LENGTH]; 124static u_int ssh1_keylen; 125 126/* roundup current message to extra_pad bytes */ 127static u_char extra_pad = 0; 128 | 130/* Session key for protocol v1 */ 131static u_char ssh1_key[SSH_SESSION_KEY_LENGTH]; 132static u_int ssh1_keylen; 133 134/* roundup current message to extra_pad bytes */ 135static u_char extra_pad = 0; 136 |
137struct packet { 138 TAILQ_ENTRY(packet) next; 139 u_char type; 140 Buffer payload; 141}; 142TAILQ_HEAD(, packet) outgoing; 143 |
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129/* 130 * Sets the descriptors used for communication. Disables encryption until 131 * packet_set_encryption_key is called. 132 */ 133void 134packet_set_connection(int fd_in, int fd_out) 135{ 136 Cipher *none = cipher_by_name("none"); --- 6 unchanged lines hidden (view full) --- 143 cipher_init(&receive_context, none, "", 0, NULL, 0, CIPHER_DECRYPT); 144 newkeys[MODE_IN] = newkeys[MODE_OUT] = NULL; 145 if (!initialized) { 146 initialized = 1; 147 buffer_init(&input); 148 buffer_init(&output); 149 buffer_init(&outgoing_packet); 150 buffer_init(&incoming_packet); | 144/* 145 * Sets the descriptors used for communication. Disables encryption until 146 * packet_set_encryption_key is called. 147 */ 148void 149packet_set_connection(int fd_in, int fd_out) 150{ 151 Cipher *none = cipher_by_name("none"); --- 6 unchanged lines hidden (view full) --- 158 cipher_init(&receive_context, none, "", 0, NULL, 0, CIPHER_DECRYPT); 159 newkeys[MODE_IN] = newkeys[MODE_OUT] = NULL; 160 if (!initialized) { 161 initialized = 1; 162 buffer_init(&input); 163 buffer_init(&output); 164 buffer_init(&outgoing_packet); 165 buffer_init(&incoming_packet); |
166 TAILQ_INIT(&outgoing); |
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151 } 152 /* Kludge: arrange the close function to be called from fatal(). */ 153 fatal_add_cleanup((void (*) (void *)) packet_close, NULL); 154} 155 156/* Returns 1 if remote host is connected via socket, 0 if not. */ 157 158int --- 85 unchanged lines hidden (view full) --- 244 if (mode == MODE_OUT) 245 cc = &send_context; 246 else 247 cc = &receive_context; 248 249 cipher_set_keyiv(cc, dat); 250} 251int | 167 } 168 /* Kludge: arrange the close function to be called from fatal(). */ 169 fatal_add_cleanup((void (*) (void *)) packet_close, NULL); 170} 171 172/* Returns 1 if remote host is connected via socket, 0 if not. */ 173 174int --- 85 unchanged lines hidden (view full) --- 260 if (mode == MODE_OUT) 261 cc = &send_context; 262 else 263 cc = &receive_context; 264 265 cipher_set_keyiv(cc, dat); 266} 267int |
252packet_get_ssh1_cipher() | 268packet_get_ssh1_cipher(void) |
253{ 254 return (cipher_get_number(receive_context.cipher)); 255} 256 | 269{ 270 return (cipher_get_number(receive_context.cipher)); 271} 272 |
257 258u_int32_t 259packet_get_seqnr(int mode) | 273void 274packet_get_state(int mode, u_int32_t *seqnr, u_int64_t *blocks, u_int32_t *packets) |
260{ | 275{ |
261 return (mode == MODE_IN ? read_seqnr : send_seqnr); | 276 struct packet_state *state; 277 278 state = (mode == MODE_IN) ? &p_read : &p_send; 279 *seqnr = state->seqnr; 280 *blocks = state->blocks; 281 *packets = state->packets; |
262} 263 264void | 282} 283 284void |
265packet_set_seqnr(int mode, u_int32_t seqnr) | 285packet_set_state(int mode, u_int32_t seqnr, u_int64_t blocks, u_int32_t packets) |
266{ | 286{ |
267 if (mode == MODE_IN) 268 read_seqnr = seqnr; 269 else if (mode == MODE_OUT) 270 send_seqnr = seqnr; 271 else 272 fatal("packet_set_seqnr: bad mode %d", mode); | 287 struct packet_state *state; 288 289 state = (mode == MODE_IN) ? &p_read : &p_send; 290 state->seqnr = seqnr; 291 state->blocks = blocks; 292 state->packets = packets; |
273} 274 275/* returns 1 if connection is via ipv4 */ 276 277int 278packet_connection_is_ipv4(void) 279{ 280 struct sockaddr_storage to; --- 276 unchanged lines hidden (view full) --- 557 558void 559set_newkeys(int mode) 560{ 561 Enc *enc; 562 Mac *mac; 563 Comp *comp; 564 CipherContext *cc; | 293} 294 295/* returns 1 if connection is via ipv4 */ 296 297int 298packet_connection_is_ipv4(void) 299{ 300 struct sockaddr_storage to; --- 276 unchanged lines hidden (view full) --- 577 578void 579set_newkeys(int mode) 580{ 581 Enc *enc; 582 Mac *mac; 583 Comp *comp; 584 CipherContext *cc; |
585 u_int64_t *max_blocks; |
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565 int encrypt; 566 567 debug2("set_newkeys: mode %d", mode); 568 569 if (mode == MODE_OUT) { 570 cc = &send_context; 571 encrypt = CIPHER_ENCRYPT; | 586 int encrypt; 587 588 debug2("set_newkeys: mode %d", mode); 589 590 if (mode == MODE_OUT) { 591 cc = &send_context; 592 encrypt = CIPHER_ENCRYPT; |
593 p_send.packets = p_send.blocks = 0; 594 max_blocks = &max_blocks_out; |
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572 } else { 573 cc = &receive_context; 574 encrypt = CIPHER_DECRYPT; | 595 } else { 596 cc = &receive_context; 597 encrypt = CIPHER_DECRYPT; |
598 p_read.packets = p_read.blocks = 0; 599 max_blocks = &max_blocks_in; |
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575 } 576 if (newkeys[mode] != NULL) { 577 debug("set_newkeys: rekeying"); 578 cipher_cleanup(cc); 579 enc = &newkeys[mode]->enc; 580 mac = &newkeys[mode]->mac; 581 comp = &newkeys[mode]->comp; 582 memset(mac->key, 0, mac->key_len); --- 22 unchanged lines hidden (view full) --- 605 if (comp->type != 0 && comp->enabled == 0) { 606 packet_init_compression(); 607 if (mode == MODE_OUT) 608 buffer_compress_init_send(6); 609 else 610 buffer_compress_init_recv(); 611 comp->enabled = 1; 612 } | 600 } 601 if (newkeys[mode] != NULL) { 602 debug("set_newkeys: rekeying"); 603 cipher_cleanup(cc); 604 enc = &newkeys[mode]->enc; 605 mac = &newkeys[mode]->mac; 606 comp = &newkeys[mode]->comp; 607 memset(mac->key, 0, mac->key_len); --- 22 unchanged lines hidden (view full) --- 630 if (comp->type != 0 && comp->enabled == 0) { 631 packet_init_compression(); 632 if (mode == MODE_OUT) 633 buffer_compress_init_send(6); 634 else 635 buffer_compress_init_recv(); 636 comp->enabled = 1; 637 } |
638 /* 639 * The 2^(blocksize*2) limit is too expensive for 3DES, 640 * blowfish, etc, so enforce a 1GB limit for small blocksizes. 641 */ 642 if (enc->block_size >= 16) 643 *max_blocks = (u_int64_t)1 << (enc->block_size*2); 644 else 645 *max_blocks = ((u_int64_t)1 << 30) / enc->block_size; 646 if (rekey_limit) 647 *max_blocks = MIN(*max_blocks, rekey_limit / enc->block_size); |
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613} 614 615/* 616 * Finalize packet in SSH2 format (compress, mac, encrypt, enqueue) 617 */ 618static void | 648} 649 650/* 651 * Finalize packet in SSH2 format (compress, mac, encrypt, enqueue) 652 */ 653static void |
619packet_send2(void) | 654packet_send2_wrapped(void) |
620{ 621 u_char type, *cp, *macbuf = NULL; 622 u_char padlen, pad; 623 u_int packet_length = 0; 624 u_int i, len; 625 u_int32_t rand = 0; 626 Enc *enc = NULL; 627 Mac *mac = NULL; --- 65 unchanged lines hidden (view full) --- 693 packet_length = buffer_len(&outgoing_packet) - 4; 694 cp = buffer_ptr(&outgoing_packet); 695 PUT_32BIT(cp, packet_length); 696 cp[4] = padlen; 697 DBG(debug("send: len %d (includes padlen %d)", packet_length+4, padlen)); 698 699 /* compute MAC over seqnr and packet(length fields, payload, padding) */ 700 if (mac && mac->enabled) { | 655{ 656 u_char type, *cp, *macbuf = NULL; 657 u_char padlen, pad; 658 u_int packet_length = 0; 659 u_int i, len; 660 u_int32_t rand = 0; 661 Enc *enc = NULL; 662 Mac *mac = NULL; --- 65 unchanged lines hidden (view full) --- 728 packet_length = buffer_len(&outgoing_packet) - 4; 729 cp = buffer_ptr(&outgoing_packet); 730 PUT_32BIT(cp, packet_length); 731 cp[4] = padlen; 732 DBG(debug("send: len %d (includes padlen %d)", packet_length+4, padlen)); 733 734 /* compute MAC over seqnr and packet(length fields, payload, padding) */ 735 if (mac && mac->enabled) { |
701 macbuf = mac_compute(mac, send_seqnr, | 736 macbuf = mac_compute(mac, p_send.seqnr, |
702 buffer_ptr(&outgoing_packet), 703 buffer_len(&outgoing_packet)); | 737 buffer_ptr(&outgoing_packet), 738 buffer_len(&outgoing_packet)); |
704 DBG(debug("done calc MAC out #%d", send_seqnr)); | 739 DBG(debug("done calc MAC out #%d", p_send.seqnr)); |
705 } 706 /* encrypt packet and append to output buffer. */ 707 cp = buffer_append_space(&output, buffer_len(&outgoing_packet)); 708 cipher_crypt(&send_context, cp, buffer_ptr(&outgoing_packet), 709 buffer_len(&outgoing_packet)); 710 /* append unencrypted MAC */ 711 if (mac && mac->enabled) 712 buffer_append(&output, (char *)macbuf, mac->mac_len); 713#ifdef PACKET_DEBUG 714 fprintf(stderr, "encrypted: "); 715 buffer_dump(&output); 716#endif 717 /* increment sequence number for outgoing packets */ | 740 } 741 /* encrypt packet and append to output buffer. */ 742 cp = buffer_append_space(&output, buffer_len(&outgoing_packet)); 743 cipher_crypt(&send_context, cp, buffer_ptr(&outgoing_packet), 744 buffer_len(&outgoing_packet)); 745 /* append unencrypted MAC */ 746 if (mac && mac->enabled) 747 buffer_append(&output, (char *)macbuf, mac->mac_len); 748#ifdef PACKET_DEBUG 749 fprintf(stderr, "encrypted: "); 750 buffer_dump(&output); 751#endif 752 /* increment sequence number for outgoing packets */ |
718 if (++send_seqnr == 0) 719 log("outgoing seqnr wraps around"); | 753 if (++p_send.seqnr == 0) 754 logit("outgoing seqnr wraps around"); 755 if (++p_send.packets == 0) 756 if (!(datafellows & SSH_BUG_NOREKEY)) 757 fatal("XXX too many packets with same key"); 758 p_send.blocks += (packet_length + 4) / block_size; |
720 buffer_clear(&outgoing_packet); 721 722 if (type == SSH2_MSG_NEWKEYS) 723 set_newkeys(MODE_OUT); 724} 725 | 759 buffer_clear(&outgoing_packet); 760 761 if (type == SSH2_MSG_NEWKEYS) 762 set_newkeys(MODE_OUT); 763} 764 |
765static void 766packet_send2(void) 767{ 768 static int rekeying = 0; 769 struct packet *p; 770 u_char type, *cp; 771 772 cp = buffer_ptr(&outgoing_packet); 773 type = cp[5]; 774 775 /* during rekeying we can only send key exchange messages */ 776 if (rekeying) { 777 if (!((type >= SSH2_MSG_TRANSPORT_MIN) && 778 (type <= SSH2_MSG_TRANSPORT_MAX))) { 779 debug("enqueue packet: %u", type); 780 p = xmalloc(sizeof(*p)); 781 p->type = type; 782 memcpy(&p->payload, &outgoing_packet, sizeof(Buffer)); 783 buffer_init(&outgoing_packet); 784 TAILQ_INSERT_TAIL(&outgoing, p, next); 785 return; 786 } 787 } 788 789 /* rekeying starts with sending KEXINIT */ 790 if (type == SSH2_MSG_KEXINIT) 791 rekeying = 1; 792 793 packet_send2_wrapped(); 794 795 /* after a NEWKEYS message we can send the complete queue */ 796 if (type == SSH2_MSG_NEWKEYS) { 797 rekeying = 0; 798 while ((p = TAILQ_FIRST(&outgoing))) { 799 type = p->type; 800 debug("dequeue packet: %u", type); 801 buffer_free(&outgoing_packet); 802 memcpy(&outgoing_packet, &p->payload, 803 sizeof(Buffer)); 804 TAILQ_REMOVE(&outgoing, p, next); 805 xfree(p); 806 packet_send2_wrapped(); 807 } 808 } 809} 810 |
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726void 727packet_send(void) 728{ 729 if (compat20) 730 packet_send2(); 731 else 732 packet_send1(); 733 DBG(debug("packet_send done")); --- 45 unchanged lines hidden (view full) --- 779 /* Wait for some data to arrive. */ 780 while (select(connection_in + 1, setp, NULL, NULL, NULL) == -1 && 781 (errno == EAGAIN || errno == EINTR)) 782 ; 783 784 /* Read data from the socket. */ 785 len = read(connection_in, buf, sizeof(buf)); 786 if (len == 0) { | 811void 812packet_send(void) 813{ 814 if (compat20) 815 packet_send2(); 816 else 817 packet_send1(); 818 DBG(debug("packet_send done")); --- 45 unchanged lines hidden (view full) --- 864 /* Wait for some data to arrive. */ 865 while (select(connection_in + 1, setp, NULL, NULL, NULL) == -1 && 866 (errno == EAGAIN || errno == EINTR)) 867 ; 868 869 /* Read data from the socket. */ 870 len = read(connection_in, buf, sizeof(buf)); 871 if (len == 0) { |
787 log("Connection closed by %.200s", get_remote_ipaddr()); | 872 logit("Connection closed by %.200s", get_remote_ipaddr()); |
788 fatal_cleanup(); 789 } 790 if (len < 0) 791 fatal("Read from socket failed: %.100s", strerror(errno)); 792 /* Append it to the buffer. */ 793 packet_process_incoming(buf, len); 794 } 795 /* NOTREACHED */ --- 134 unchanged lines hidden (view full) --- 930 return SSH_MSG_NONE; 931 buffer_clear(&incoming_packet); 932 cp = buffer_append_space(&incoming_packet, block_size); 933 cipher_crypt(&receive_context, cp, buffer_ptr(&input), 934 block_size); 935 cp = buffer_ptr(&incoming_packet); 936 packet_length = GET_32BIT(cp); 937 if (packet_length < 1 + 4 || packet_length > 256 * 1024) { | 873 fatal_cleanup(); 874 } 875 if (len < 0) 876 fatal("Read from socket failed: %.100s", strerror(errno)); 877 /* Append it to the buffer. */ 878 packet_process_incoming(buf, len); 879 } 880 /* NOTREACHED */ --- 134 unchanged lines hidden (view full) --- 1015 return SSH_MSG_NONE; 1016 buffer_clear(&incoming_packet); 1017 cp = buffer_append_space(&incoming_packet, block_size); 1018 cipher_crypt(&receive_context, cp, buffer_ptr(&input), 1019 block_size); 1020 cp = buffer_ptr(&incoming_packet); 1021 packet_length = GET_32BIT(cp); 1022 if (packet_length < 1 + 4 || packet_length > 256 * 1024) { |
1023#ifdef PACKET_DEBUG |
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938 buffer_dump(&incoming_packet); | 1024 buffer_dump(&incoming_packet); |
1025#endif |
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939 packet_disconnect("Bad packet length %u.", packet_length); 940 } 941 DBG(debug("input: packet len %u", packet_length+4)); 942 buffer_consume(&input, block_size); 943 } 944 /* we have a partial packet of block_size bytes */ 945 need = 4 + packet_length - block_size; 946 DBG(debug("partial packet %d, need %d, maclen %d", block_size, --- 14 unchanged lines hidden (view full) --- 961 cp = buffer_append_space(&incoming_packet, need); 962 cipher_crypt(&receive_context, cp, buffer_ptr(&input), need); 963 buffer_consume(&input, need); 964 /* 965 * compute MAC over seqnr and packet, 966 * increment sequence number for incoming packet 967 */ 968 if (mac && mac->enabled) { | 1026 packet_disconnect("Bad packet length %u.", packet_length); 1027 } 1028 DBG(debug("input: packet len %u", packet_length+4)); 1029 buffer_consume(&input, block_size); 1030 } 1031 /* we have a partial packet of block_size bytes */ 1032 need = 4 + packet_length - block_size; 1033 DBG(debug("partial packet %d, need %d, maclen %d", block_size, --- 14 unchanged lines hidden (view full) --- 1048 cp = buffer_append_space(&incoming_packet, need); 1049 cipher_crypt(&receive_context, cp, buffer_ptr(&input), need); 1050 buffer_consume(&input, need); 1051 /* 1052 * compute MAC over seqnr and packet, 1053 * increment sequence number for incoming packet 1054 */ 1055 if (mac && mac->enabled) { |
969 macbuf = mac_compute(mac, read_seqnr, | 1056 macbuf = mac_compute(mac, p_read.seqnr, |
970 buffer_ptr(&incoming_packet), 971 buffer_len(&incoming_packet)); 972 if (memcmp(macbuf, buffer_ptr(&input), mac->mac_len) != 0) 973 packet_disconnect("Corrupted MAC on input."); | 1057 buffer_ptr(&incoming_packet), 1058 buffer_len(&incoming_packet)); 1059 if (memcmp(macbuf, buffer_ptr(&input), mac->mac_len) != 0) 1060 packet_disconnect("Corrupted MAC on input."); |
974 DBG(debug("MAC #%d ok", read_seqnr)); | 1061 DBG(debug("MAC #%d ok", p_read.seqnr)); |
975 buffer_consume(&input, mac->mac_len); 976 } 977 if (seqnr_p != NULL) | 1062 buffer_consume(&input, mac->mac_len); 1063 } 1064 if (seqnr_p != NULL) |
978 *seqnr_p = read_seqnr; 979 if (++read_seqnr == 0) 980 log("incoming seqnr wraps around"); | 1065 *seqnr_p = p_read.seqnr; 1066 if (++p_read.seqnr == 0) 1067 logit("incoming seqnr wraps around"); 1068 if (++p_read.packets == 0) 1069 if (!(datafellows & SSH_BUG_NOREKEY)) 1070 fatal("XXX too many packets with same key"); 1071 p_read.blocks += (packet_length + 4) / block_size; |
981 982 /* get padlen */ 983 cp = buffer_ptr(&incoming_packet); 984 padlen = cp[4]; 985 DBG(debug("input: padlen %d", padlen)); 986 if (padlen < 4) 987 packet_disconnect("Corrupted padlen %d on input.", padlen); 988 --- 48 unchanged lines hidden (view full) --- 1037 debug("Remote: %.900s", msg); 1038 xfree(msg); 1039 msg = packet_get_string(NULL); 1040 xfree(msg); 1041 break; 1042 case SSH2_MSG_DISCONNECT: 1043 reason = packet_get_int(); 1044 msg = packet_get_string(NULL); | 1072 1073 /* get padlen */ 1074 cp = buffer_ptr(&incoming_packet); 1075 padlen = cp[4]; 1076 DBG(debug("input: padlen %d", padlen)); 1077 if (padlen < 4) 1078 packet_disconnect("Corrupted padlen %d on input.", padlen); 1079 --- 48 unchanged lines hidden (view full) --- 1128 debug("Remote: %.900s", msg); 1129 xfree(msg); 1130 msg = packet_get_string(NULL); 1131 xfree(msg); 1132 break; 1133 case SSH2_MSG_DISCONNECT: 1134 reason = packet_get_int(); 1135 msg = packet_get_string(NULL); |
1045 log("Received disconnect from %s: %u: %.400s", | 1136 logit("Received disconnect from %s: %u: %.400s", |
1046 get_remote_ipaddr(), reason, msg); 1047 xfree(msg); 1048 fatal_cleanup(); 1049 break; 1050 case SSH2_MSG_UNIMPLEMENTED: 1051 seqnr = packet_get_int(); 1052 debug("Received SSH2_MSG_UNIMPLEMENTED for %u", 1053 seqnr); --- 9 unchanged lines hidden (view full) --- 1063 break; 1064 case SSH_MSG_DEBUG: 1065 msg = packet_get_string(NULL); 1066 debug("Remote: %.900s", msg); 1067 xfree(msg); 1068 break; 1069 case SSH_MSG_DISCONNECT: 1070 msg = packet_get_string(NULL); | 1137 get_remote_ipaddr(), reason, msg); 1138 xfree(msg); 1139 fatal_cleanup(); 1140 break; 1141 case SSH2_MSG_UNIMPLEMENTED: 1142 seqnr = packet_get_int(); 1143 debug("Received SSH2_MSG_UNIMPLEMENTED for %u", 1144 seqnr); --- 9 unchanged lines hidden (view full) --- 1154 break; 1155 case SSH_MSG_DEBUG: 1156 msg = packet_get_string(NULL); 1157 debug("Remote: %.900s", msg); 1158 xfree(msg); 1159 break; 1160 case SSH_MSG_DISCONNECT: 1161 msg = packet_get_string(NULL); |
1071 log("Received disconnect from %s: %.400s", | 1162 logit("Received disconnect from %s: %.400s", |
1072 get_remote_ipaddr(), msg); 1073 fatal_cleanup(); 1074 xfree(msg); 1075 break; 1076 default: 1077 if (type) 1078 DBG(debug("received packet type %d", type)); 1079 return type; --- 142 unchanged lines hidden (view full) --- 1222 * Format the message. Note that the caller must make sure the 1223 * message is of limited size. 1224 */ 1225 va_start(args, fmt); 1226 vsnprintf(buf, sizeof(buf), fmt, args); 1227 va_end(args); 1228 1229 /* Display the error locally */ | 1163 get_remote_ipaddr(), msg); 1164 fatal_cleanup(); 1165 xfree(msg); 1166 break; 1167 default: 1168 if (type) 1169 DBG(debug("received packet type %d", type)); 1170 return type; --- 142 unchanged lines hidden (view full) --- 1313 * Format the message. Note that the caller must make sure the 1314 * message is of limited size. 1315 */ 1316 va_start(args, fmt); 1317 vsnprintf(buf, sizeof(buf), fmt, args); 1318 va_end(args); 1319 1320 /* Display the error locally */ |
1230 log("Disconnecting: %.100s", buf); | 1321 logit("Disconnecting: %.100s", buf); |
1231 1232 /* Send the disconnect message to the other side, and wait for it to get sent. */ 1233 if (compat20) { 1234 packet_start(SSH2_MSG_DISCONNECT); 1235 packet_put_int(SSH2_DISCONNECT_PROTOCOL_ERROR); 1236 packet_put_cstring(buf); 1237 packet_put_cstring(""); 1238 } else { --- 70 unchanged lines hidden (view full) --- 1309packet_not_very_much_data_to_write(void) 1310{ 1311 if (interactive_mode) 1312 return buffer_len(&output) < 16384; 1313 else 1314 return buffer_len(&output) < 128 * 1024; 1315} 1316 | 1322 1323 /* Send the disconnect message to the other side, and wait for it to get sent. */ 1324 if (compat20) { 1325 packet_start(SSH2_MSG_DISCONNECT); 1326 packet_put_int(SSH2_DISCONNECT_PROTOCOL_ERROR); 1327 packet_put_cstring(buf); 1328 packet_put_cstring(""); 1329 } else { --- 70 unchanged lines hidden (view full) --- 1400packet_not_very_much_data_to_write(void) 1401{ 1402 if (interactive_mode) 1403 return buffer_len(&output) < 16384; 1404 else 1405 return buffer_len(&output) < 128 * 1024; 1406} 1407 |
1408 1409#if defined(IP_TOS) && !defined(IP_TOS_IS_BROKEN) |
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1317static void 1318packet_set_tos(int interactive) 1319{ 1320 int tos = interactive ? IPTOS_LOWDELAY : IPTOS_THROUGHPUT; 1321 1322 if (!packet_connection_is_on_socket() || 1323 !packet_connection_is_ipv4()) 1324 return; 1325 if (setsockopt(connection_in, IPPROTO_IP, IP_TOS, &tos, 1326 sizeof(tos)) < 0) 1327 error("setsockopt IP_TOS %d: %.100s:", 1328 tos, strerror(errno)); 1329} | 1410static void 1411packet_set_tos(int interactive) 1412{ 1413 int tos = interactive ? IPTOS_LOWDELAY : IPTOS_THROUGHPUT; 1414 1415 if (!packet_connection_is_on_socket() || 1416 !packet_connection_is_ipv4()) 1417 return; 1418 if (setsockopt(connection_in, IPPROTO_IP, IP_TOS, &tos, 1419 sizeof(tos)) < 0) 1420 error("setsockopt IP_TOS %d: %.100s:", 1421 tos, strerror(errno)); 1422} |
1423#endif |
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1330 1331/* Informs that the current session is interactive. Sets IP flags for that. */ 1332 1333void 1334packet_set_interactive(int interactive) 1335{ 1336 static int called = 0; 1337 --- 18 unchanged lines hidden (view full) --- 1356/* Returns true if the current connection is interactive. */ 1357 1358int 1359packet_is_interactive(void) 1360{ 1361 return interactive_mode; 1362} 1363 | 1424 1425/* Informs that the current session is interactive. Sets IP flags for that. */ 1426 1427void 1428packet_set_interactive(int interactive) 1429{ 1430 static int called = 0; 1431 --- 18 unchanged lines hidden (view full) --- 1450/* Returns true if the current connection is interactive. */ 1451 1452int 1453packet_is_interactive(void) 1454{ 1455 return interactive_mode; 1456} 1457 |
1364int 1365packet_set_maxsize(int s) | 1458u_int 1459packet_set_maxsize(u_int s) |
1366{ 1367 static int called = 0; 1368 1369 if (called) { | 1460{ 1461 static int called = 0; 1462 1463 if (called) { |
1370 log("packet_set_maxsize: called twice: old %d new %d", | 1464 logit("packet_set_maxsize: called twice: old %d new %d", |
1371 max_packet_size, s); 1372 return -1; 1373 } 1374 if (s < 4 * 1024 || s > 1024 * 1024) { | 1465 max_packet_size, s); 1466 return -1; 1467 } 1468 if (s < 4 * 1024 || s > 1024 * 1024) { |
1375 log("packet_set_maxsize: bad size %d", s); | 1469 logit("packet_set_maxsize: bad size %d", s); |
1376 return -1; 1377 } 1378 called = 1; 1379 debug("packet_set_maxsize: setting to %d", s); 1380 max_packet_size = s; 1381 return s; 1382} 1383 --- 25 unchanged lines hidden (view full) --- 1409 packet_put_int(nbytes); 1410 for (i = 0; i < nbytes; i++) { 1411 if (i % 4 == 0) 1412 rand = arc4random(); 1413 packet_put_char(rand & 0xff); 1414 rand >>= 8; 1415 } 1416} | 1470 return -1; 1471 } 1472 called = 1; 1473 debug("packet_set_maxsize: setting to %d", s); 1474 max_packet_size = s; 1475 return s; 1476} 1477 --- 25 unchanged lines hidden (view full) --- 1503 packet_put_int(nbytes); 1504 for (i = 0; i < nbytes; i++) { 1505 if (i % 4 == 0) 1506 rand = arc4random(); 1507 packet_put_char(rand & 0xff); 1508 rand >>= 8; 1509 } 1510} |
1511 1512#define MAX_PACKETS (1<<31) 1513int 1514packet_need_rekeying(void) 1515{ 1516 if (datafellows & SSH_BUG_NOREKEY) 1517 return 0; 1518 return 1519 (p_send.packets > MAX_PACKETS) || 1520 (p_read.packets > MAX_PACKETS) || 1521 (max_blocks_out && (p_send.blocks > max_blocks_out)) || 1522 (max_blocks_in && (p_read.blocks > max_blocks_in)); 1523} 1524 1525void 1526packet_set_rekey_limit(u_int32_t bytes) 1527{ 1528 rekey_limit = bytes; 1529} |
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