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110 lines
2.6 KiB
C
110 lines
2.6 KiB
C
/*
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* Utility routines used in rsync.
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*
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* Copyright (C) 1996-2000 Andrew Tridgell
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* Copyright (C) 1996 Paul Mackerras
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* Copyright (C) 2001, 2002 Martin Pool <mbp@samba.org>
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* Copyright (C) 2003-2014 Wayne Davison
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, visit the http://fsf.org website.
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*/
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#include "rsync.h"
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#include "ifuncs.h"
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#include "itypes.h"
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#include "inums.h"
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extern int checksum_len;
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/**
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* Sleep for a specified number of milliseconds.
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*
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* Always returns TRUE. (In the future it might return FALSE if
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* interrupted.)
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**/
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int msleep(int t)
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{
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int tdiff = 0;
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struct timeval tval, t1, t2;
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gettimeofday(&t1, NULL);
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while (tdiff < t) {
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tval.tv_sec = (t-tdiff)/1000;
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tval.tv_usec = 1000*((t-tdiff)%1000);
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errno = 0;
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select(0,NULL,NULL, NULL, &tval);
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gettimeofday(&t2, NULL);
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if (t2.tv_sec < t1.tv_sec)
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t1 = t2; /* Time went backwards, so start over. */
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tdiff = (t2.tv_sec - t1.tv_sec)*1000 +
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(t2.tv_usec - t1.tv_usec)/1000;
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}
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return True;
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}
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#define MALLOC_MAX 0x40000000
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void *_new_array(unsigned long num, unsigned int size, int use_calloc)
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{
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if (num >= MALLOC_MAX/size)
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return NULL;
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return use_calloc ? calloc(num, size) : malloc(num * size);
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}
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void *_realloc_array(void *ptr, unsigned int size, size_t num)
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{
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if (num >= MALLOC_MAX/size)
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return NULL;
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if (!ptr)
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return malloc(size * num);
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return realloc(ptr, size * num);
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}
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const char *sum_as_hex(const char *sum)
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{
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static char buf[MAX_DIGEST_LEN*2+1];
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int i, x1, x2;
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char *c = buf + checksum_len*2;
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assert(c - buf < (int)sizeof buf);
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*c = '\0';
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for (i = checksum_len; --i >= 0; ) {
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x1 = CVAL(sum, i);
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x2 = x1 >> 4;
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x1 &= 0xF;
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*--c = x1 <= 9 ? x1 + '0' : x1 + 'a' - 10;
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*--c = x2 <= 9 ? x2 + '0' : x2 + 'a' - 10;
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}
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return buf;
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}
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NORETURN void out_of_memory(const char *str)
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{
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rprintf(FERROR, "ERROR: out of memory in %s [%s]\n", str, who_am_i());
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exit_cleanup(RERR_MALLOC);
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}
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NORETURN void overflow_exit(const char *str)
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{
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rprintf(FERROR, "ERROR: buffer overflow in %s [%s]\n", str, who_am_i());
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exit_cleanup(RERR_MALLOC);
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}
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