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Annotation of src/usr.bin/ssh/roaming_common.c, Revision 1.3

1.1       andreas     1: /*
                      2:  * Copyright (c) 2004-2009 AppGate Network Security AB
                      3:  *
                      4:  * Permission to use, copy, modify, and distribute this software for any
                      5:  * purpose with or without fee is hereby granted, provided that the above
                      6:  * copyright notice and this permission notice appear in all copies.
                      7:  *
                      8:  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
                      9:  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
                     10:  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
                     11:  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
                     12:  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
                     13:  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
                     14:  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
                     15:  */
                     16:
                     17: #include <sys/types.h>
                     18: #include <sys/socket.h>
                     19: #include <sys/uio.h>
                     20:
                     21: #include <errno.h>
                     22: #include <inttypes.h>
                     23: #include <stdarg.h>
                     24: #include <unistd.h>
                     25:
                     26: #include "atomicio.h"
                     27: #include "log.h"
                     28: #include "packet.h"
                     29: #include "xmalloc.h"
                     30: #include "cipher.h"
                     31: #include "buffer.h"
                     32: #include "roaming.h"
                     33:
                     34: static u_int64_t write_bytes = 0;
                     35: static u_int64_t read_bytes = 0;
                     36:
                     37: int resume_in_progress = 0;
                     38:
                     39: u_int64_t
                     40: get_recv_bytes(void)
                     41: {
                     42:        return read_bytes;
                     43: }
                     44:
                     45: void
                     46: add_recv_bytes(u_int64_t num)
                     47: {
                     48:        read_bytes += num;
                     49: }
                     50:
                     51: u_int64_t
                     52: get_sent_bytes(void)
                     53: {
                     54:        return write_bytes;
                     55: }
                     56:
                     57: void
1.2       andreas    58: roam_set_bytes(u_int64_t sent, u_int64_t recvd)
1.1       andreas    59: {
1.2       andreas    60:        read_bytes = recvd;
1.1       andreas    61:        write_bytes = sent;
                     62: }
                     63:
                     64: ssize_t
                     65: roaming_write(int fd, const void *buf, size_t count, int *cont)
                     66: {
                     67:        ssize_t ret;
                     68:
                     69:        ret = write(fd, buf, count);
                     70:        if (ret > 0 && !resume_in_progress) {
                     71:                write_bytes += ret;
                     72:        }
1.3     ! andreas    73:        debug3("Wrote %ld bytes for a total of %llu", (long)ret,
        !            74:            (unsigned long long)write_bytes);
1.1       andreas    75:        return ret;
                     76: }
                     77:
                     78: ssize_t
                     79: roaming_read(int fd, void *buf, size_t count, int *cont)
                     80: {
                     81:        ssize_t ret = read(fd, buf, count);
                     82:        if (ret > 0) {
                     83:                if (!resume_in_progress) {
                     84:                        read_bytes += ret;
                     85:                }
                     86:        }
                     87:        return ret;
                     88: }
                     89:
1.2       andreas    90: size_t
                     91: roaming_atomicio(ssize_t(*f)(int, void*, size_t), int fd, void *buf,
                     92:     size_t count)
1.1       andreas    93: {
1.2       andreas    94:        size_t ret = atomicio(f, fd, buf, count);
1.1       andreas    95:
1.2       andreas    96:        if (f == vwrite && ret > 0 && !resume_in_progress) {
1.1       andreas    97:                write_bytes += ret;
                     98:        } else if (f == read && ret > 0 && !resume_in_progress) {
                     99:                read_bytes += ret;
                    100:        }
                    101:        return ret;
                    102: }