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fragiso.c
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fragiso.c
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/*
* Copyright (c) 2005 Michael Schroeder ([email protected])
*
* This program is licensed under the BSD license, read LICENSE.BSD
* for further information
*/
#define _LARGEFILE64_SOURCE
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <stdint.h>
#include <unistd.h>
#include <zlib.h>
#include <lzma.h>
#include <bzlib.h>
#include "rpmhead.h"
#include "md5.h"
#include "util.h"
#include "cfile.h"
struct rpmpay {
char *name;
unsigned int x;
unsigned int lx;
off64_t o;
unsigned int l;
unsigned char lmd5[16];
unsigned char hmd5[16];
};
static unsigned int
get4(unsigned char *p)
{
return p[0] | p[1] << 8 | p[2] << 16 | p[3] << 24;
}
static unsigned int
get4n(unsigned char *p)
{
return p[0] << 24 | p[1] << 16 | p[2] << 8 | p[3];
}
static void
readblk(FILE *fp, unsigned char *blk, unsigned int num)
{
if (fseeko64(fp, 0x800 * (off64_t)num, SEEK_SET) != 0)
{
perror("fseeko");
exit(1);
}
if (fread(blk, 0x800, 1, fp) != 1)
{
perror("fread");
exit(1);
}
}
static struct rpmpay *rpmpays;
static int rpmpayn;
static void
addrpm(char *name, off64_t o, unsigned int l, unsigned char *lmd5, unsigned char *hmd5)
{
char *n;
if ((rpmpayn & 31) == 0)
{
if (rpmpays == 0)
rpmpays = malloc(32 * sizeof(*rpmpays));
else
rpmpays = realloc(rpmpays, (rpmpayn + 32) * sizeof(*rpmpays));
if (!rpmpays)
{
fprintf(stderr, "out of mem\n");
exit(1);
}
}
n = name ? strdup(name) : 0;
if (name && !n)
{
fprintf(stderr, "out of mem\n");
exit(1);
}
rpmpays[rpmpayn].name = n;
rpmpays[rpmpayn].o = o;
rpmpays[rpmpayn].l = l;
rpmpays[rpmpayn].x = 0;
rpmpays[rpmpayn].lx = 0;
if (lmd5)
memcpy(rpmpays[rpmpayn].lmd5, lmd5, 16);
else
memset(rpmpays[rpmpayn].lmd5, 0, 16);
if (hmd5)
memcpy(rpmpays[rpmpayn].hmd5, hmd5, 16);
else
memset(rpmpays[rpmpayn].hmd5, 0, 16);
rpmpayn++;
}
static int
sortrpmcmp(const void *av, const void *bv)
{
const struct rpmpay *a = av;
const struct rpmpay *b = bv;
if (a->o < b->o)
return -1;
if (a->o > b->o)
return 1;
return strcmp(a->name, b->name);
}
static void
sortrpm()
{
if (!rpmpayn)
return;
qsort(rpmpays, rpmpayn, sizeof(*rpmpays), sortrpmcmp);
}
void
readrpm(char *name, FILE *fp, unsigned int filepos, unsigned int filelen)
{
static unsigned int rpmbalen;
static unsigned char *rpmb;
int rpmblen;
int len, hcnt, hdcnt, hoffset;
struct rpmhead *h, *sigh;
char *rpmn, *rpma;
unsigned char lmd5[16], *hmd5;
char nbuf[256 * 3];
char *suf;
MD5_CTX ctx;
unsigned int filepos2 = filepos;
len = strlen(name);
suf = "";
if (len > 10 && !strcmp(name + len - 10, ".delta.rpm"))
suf = ".delta";
else if (len > 10 && !strcmp(name + len - 10, ".patch.rpm"))
suf = ".patch";
if (!rpmb)
{
rpmbalen += 0x800 * 4;
rpmb = xrealloc(rpmb, rpmbalen);
}
readblk(fp, rpmb, filepos++);
rpmblen = 0x800;
if (get4(rpmb) != 0xdbeeabed)
return; /* not really a rpm */
if (get4(rpmb + 0x60) != 0x01e8ad8e)
{
fprintf(stderr, "bad rpm (bad sigheader): %s\n", name);
exit(1);
}
hcnt = get4n(rpmb + 0x68);
hdcnt = get4n(rpmb + 0x6c);
if ((hdcnt & 7) != 0)
hdcnt += 8 - (hdcnt & 7);
len = 0x60 + 16 + hcnt * 16 + hdcnt + 16;
if (len > filelen)
{
fprintf(stderr, "bad rpm (EOF): %s\n", name);
exit(1);
}
while (rpmblen < len)
{
if (rpmblen + 0x800 > rpmbalen)
{
rpmbalen += 0x800 * 4;
rpmb = xrealloc(rpmb, rpmbalen);
}
readblk(fp, rpmb + rpmblen, filepos++);
rpmblen += 0x800;
}
sigh = readhead_buf(rpmb + 0x60, len - 16, 1);
if (!sigh)
{
fprintf(stderr, "bad rpm (bad sigh): %s\n", name);
exit(1);
}
hoffset = len - 16;
if (get4(rpmb + hoffset) != 0x01e8ad8e)
{
fprintf(stderr, "bad rpm (bad header): %s\n", name);
exit(1);
}
hcnt = get4n(rpmb + hoffset + 8);
hdcnt = get4n(rpmb + hoffset + 12);
len += hcnt * 16 + hdcnt;
if (len > filelen)
{
fprintf(stderr, "bad rpm (EOF): %s\n", name);
exit(1);
}
while (rpmblen < len)
{
if (rpmblen + 0x800 > rpmbalen)
{
rpmbalen += 0x800 * 4;
rpmb = xrealloc(rpmb, rpmbalen);
}
readblk(fp, rpmb + rpmblen, filepos++);
rpmblen += 0x800;
}
h = readhead_buf(rpmb + hoffset, 16 + hcnt * 16 + hdcnt, 0);
if (!h)
{
fprintf(stderr, "bad rpm (bad h): %s\n", name);
exit(1);
}
/* ok, all header are read in, extract information */
rpmn = headstring(h, TAG_NAME);
if (!rpmn)
{
fprintf(stderr, "bad rpm (header contains no name): %s\n", name);
exit(1);
}
rpma = headstring(h, TAG_ARCH);
if (!rpma)
{
fprintf(stderr, "bad rpm (header contains no arch): %s\n", name);
exit(1);
}
if (strlen(rpmn) > 256 || strchr(rpmn, ' ') || strchr(rpmn, '/') || strchr(rpmn, '\n'))
rpmn = "unknown";
if (!headstring(h, TAG_SOURCERPM))
{
if (headtagtype(h, TAG_NOSOURCE) || headtagtype(h, TAG_NOPATCH))
rpma = "nosrc";
else
rpma = "src";
}
if (strlen(rpma) > 256 || strchr(rpma, ' ') || strchr(rpma, '/') || strchr(rpma, '\n'))
rpma = "unknown";
hmd5 = headbin(sigh, SIGTAG_MD5, 16);
if (!hmd5)
{
fprintf(stderr, "bad rpm (signature contains no md5 entry): %s\n", name);
exit(1);
}
sprintf(nbuf, "%s.%s%s", rpmn, rpma, suf);
rpmMD5Init(&ctx);
rpmMD5Update(&ctx, rpmb, hoffset);
rpmMD5Final(lmd5, &ctx);
addrpm(nbuf, 0x800 * (off64_t)filepos2, filelen, lmd5, hmd5);
h = xfree(h);
sigh = xfree(sigh);
}
int
rpmoffs(FILE *fp, char *isoname, struct rpmpay **retp)
{
unsigned char blk[0x800];
unsigned char blk2[0x800];
unsigned char name[256];
int namel;
unsigned int filepos, filelen;
unsigned char *pt, *ep;
int i, j, l, nl, el, nml, nmf;
unsigned int path_table_size;
unsigned int path_table_pos;
unsigned int dirpos, dirlen;
int sp_bytes_skip = 0;
unsigned int ce_blk;
unsigned int ce_off;
unsigned int ce_len;
readblk(fp, blk, 16);
if (memcmp(blk, "\001CD001", 6))
{
fprintf(stderr, "primary volume descriptor missing\n");
exit(1);
}
path_table_size = get4(blk + 132);
path_table_pos = get4(blk + 140);
pt = malloc(path_table_size);
if (!pt)
{
fprintf(stderr, "out of mem\n");
exit(1);
}
readblk(fp, blk, path_table_pos);
if (fseeko64(fp, 0x800 * (off64_t)path_table_pos, SEEK_SET) != 0)
{
perror("fseeko64");
exit(1);
}
if (fread(pt, path_table_size, 1, fp) != 1)
{
perror("fread");
exit(1);
}
for (i = 0; i < path_table_size; )
{
l = pt[i];
if (l == 0)
{
fprintf(stderr, "empty dir in path table\n");
exit(1);
}
dirpos = get4(pt + i + 2);
i += 8 + l + (l & 1);
readblk(fp, blk, dirpos);
dirlen = get4(blk + 10);
if (dirlen & 0x7ff)
{
fprintf(stderr, "bad directory len\n");
exit(1);
}
for(j = 0; dirlen; )
{
if (j == 0x800 || (l = blk[j]) == 0)
{
readblk(fp, blk, ++dirpos);
j = 0;
dirlen -= 0x800;
continue;
}
if (j + l > 0x800)
{
fprintf(stderr, "bad dir entry\n");
exit(1);
}
if ((blk[j + 25] & 2) != 0) /* directory? */
{
j += l;
continue;
}
if ((blk[j + 25] & 4) != 0) /* associated file? */
{
fprintf(stderr, "associated file\n");
exit(1);
}
if (blk[j + 26] != 0 || blk[j + 27] != 0)
{
fprintf(stderr, "interleaved file\n");
exit(1);
}
filepos = get4(blk + j + 2);
filelen = get4(blk + j + 10);
nl = blk[j + 32];
if (nl == 0 || j + nl + 33 > 0x800)
{
fprintf(stderr, "bad dir entry\n");
exit(1);
}
if ((nl & 1) == 0)
nl++;
ep = blk + j + 33 + nl;
el = l - nl - 33;
if (el >= 7 && ep[0] == 'S' && ep[1] == 'P')
sp_bytes_skip = ep[6];
else
{
ep += sp_bytes_skip;
el -= sp_bytes_skip;
}
ce_len = 0;
ce_blk = 0;
ce_off = 0;
namel = 0;
nmf = 0;
for (;;)
{
if (el <= 2)
{
if (!ce_len)
break;
readblk(fp, blk2, ce_blk);
ep = blk2 + ce_off;
el = ce_len;
ce_len = 0;
}
if (ep[0] == 'C' && ep[1] == 'E')
{
ce_blk = get4(ep + 4);
ce_off = get4(ep + 12);
ce_len = get4(ep + 20);
}
else if (ep[0] == 'N' && ep[1] == 'M')
{
nml = ep[2] - 5;
if ((nmf & 1) == 0)
namel = 0;
nmf = ep[4];
if (namel + nml + 2 >= sizeof(name))
{
fprintf(stderr, "name overflow\n");
exit(1);
}
strncpy((char *)name + namel, (char *)ep + 5, nml);
namel += nml;
name[namel] = 0;
}
el -= ep[2];
ep += ep[2];
}
j += l;
if (namel < 5)
continue;
if (filelen < 0x70 || (strcmp((char *)name + namel - 4, ".rpm") && strcmp((char *)name + namel - 4, ".spm")))
continue;
readrpm((char *)name, fp, filepos, filelen);
#if 0
readblk(fp, blk2, filepos);
filepos2 = filepos;
if (get4(blk2) != 0xdbeeabed)
continue;
if (get4(blk2 + 0x60) != 0x01e8ad8e)
{
fprintf(stderr, "bad rpm (bad sigheader): %s\n", name);
exit(1);
}
hcnt = get4n(blk2 + 0x68);
hdcnt = get4n(blk2 + 0x6c);
if ((hdcnt & 7) != 0)
hdcnt += 8 - (hdcnt & 7);
if (0x70 + hcnt * 16 + hdcnt + 0x70 >= filelen)
{
fprintf(stderr, "bad rpm (no header): %s\n", name);
exit(1);
}
hstart = 0x70 + hcnt * 16 + hdcnt;
if (hstart >= 0x800)
{
filepos2 += hstart / 0x800;
readblk(fp, blk2, filepos2);
hstart &= 0x7ff;
}
if (get4(blk2 + hstart) != 0x01e8ad8e)
{
fprintf(stderr, "bad rpm (bad header): %s\n", name);
exit(1);
}
hstart += 8;
if (hstart >= 0x800)
{
filepos2++;
readblk(fp, blk2, filepos2);
hstart &= 0x7ff;
}
hcnt = get4n(blk2 + hstart);
hdcnt = get4n(blk2 + hstart + 4);
hstart += 0x8 + hcnt * 16 + hdcnt;
if (hstart >= 0x800)
{
filepos2 += hstart / 0x800;
hstart &= 0x7ff;
}
if (hstart + (filepos2 - filepos) * 0x800 > filelen)
{
fprintf(stderr, "bad rpm (no payload): %s\n", name);
exit(1);
}
paystart = 0x800 * (off64_t)filepos2 + hstart;
paylen = filelen - (hstart + (filepos2 - filepos) * 0x800);
namel -= 4;
name[namel] = 0;
l = namel;
if (l > 6 && !strncmp((char *)name + l - 6, ".patch", 6))
l -= 6;
if (l > 6 && !strncmp((char *)name + l - 6, ".delta", 6))
l -= 6;
l--;
while (l > 0 && name[l] != '.')
l--;
if (l)
{
int l2 = l;
l--;
while (l > 0 && name[l] != '-')
l--;
if (l)
{
l--;
while (l > 0 && name[l] != '-')
l--;
if (l)
{
memmove(name + l, name + l2, namel - l2 + 1);
namel -= l2 - l;
}
}
}
addrpm((char *)name, paystart, paylen);
#endif
}
}
sortrpm();
addrpm(0, 0, 0, 0, 0);
i = rpmpayn - 1;
*retp = rpmpays;
rpmpayn = 0;
rpmpays = 0;
return i;
}
static void
write32(struct cfile *cf, unsigned int d)
{
unsigned char dd[4];
dd[0] = d >> 24;
dd[1] = d >> 16;
dd[2] = d >> 8;
dd[3] = d;
if (cf->write(cf, dd, 4) != 4)
{
perror("write32");
exit(1);
}
}
static void
write64(struct cfile *cf, off64_t d)
{
unsigned char dd[8];
dd[0] = d >> 56;
dd[1] = d >> 48;
dd[2] = d >> 40;
dd[3] = d >> 32;
dd[4] = d >> 24;
dd[5] = d >> 16;
dd[6] = d >> 8;
dd[7] = d;
if (cf->write(cf, dd, 8) != 8)
{
perror("write64");
exit(1);
}
}
static unsigned int read32(struct cfile *bfp)
{
unsigned char d[4];
if (bfp->read(bfp, d, 4) != 4)
{
perror("read32 error");
exit(1);
}
return d[0] << 24 | d[1] << 16 | d[2] << 8 | d[3];
}
static off64_t read64(struct cfile *bfp)
{
unsigned char d[8];
if (bfp->read(bfp, d, 8) != 8)
{
perror("read64 error");
exit(1);
}
return (off64_t)d[0] << 56 | (off64_t)d[1] << 48 | (off64_t)d[2] << 40 | (off64_t)d[3] << 32 | (off64_t)d[4] << 24 | (off64_t)d[5] << 16 | (off64_t)d[6] << 8 | (off64_t)d[7];
}
void
make(char *iso, char *fiso)
{
int i, j;
FILE *fp, *ofp;
struct rpmpay *pays = 0;
int payn = 0;
struct cfile *cfp;
char buf[8192];
unsigned int l, l2;
off64_t o, lo;
if (!strcmp(iso, "-"))
fp = stdin;
else if ((fp = fopen64(iso, "r")) == 0)
{
perror(iso);
exit(1);
}
payn = rpmoffs(fp, iso, &pays);
for (i = j = 0; i < payn; i++)
{
if (i && pays[i - 1].o == pays[i].o)
continue;
if (i != j)
pays[j] = pays[i];
j++;
}
payn = j;
if (!strcmp(fiso, "-"))
ofp = stdout;
else if ((ofp = fopen64(fiso, "w")) == 0)
{
perror(fiso);
exit(1);
}
fputc('F', ofp);
fputc('I', ofp);
fputc('S', ofp);
fputc('O', ofp);
fputc(0, ofp);
fputc(0, ofp);
fputc(0, ofp);
fputc(1, ofp);
cfp = cfile_open(CFILE_OPEN_WR, CFILE_IO_FILE, ofp, CFILE_COMP_GZ, CFILE_LEN_UNLIMITED, 0, 0);
if (!cfp)
{
fprintf(stderr, "could not open compression stream\n");
exit(1);
}
write32(cfp, payn);
for (i = 0; i < payn; i++)
{
write64(cfp, pays[i].o);
write32(cfp, pays[i].l);
j = strlen(pays[i].name) + 1;
write32(cfp, j);
if (cfp->write(cfp, pays[i].name, j) != j)
{
fprintf(stderr, "write error\n");
exit(1);
}
if (cfp->write(cfp, pays[i].lmd5, 16) != 16)
{
fprintf(stderr, "write error\n");
exit(1);
}
if (cfp->write(cfp, pays[i].hmd5, 16) != 16)
{
fprintf(stderr, "write error\n");
exit(1);
}
}
o = 0;
if (fseeko64(fp, o, SEEK_SET))
{
fprintf(stderr, "%s: seek error\n", iso);
exit(1);
}
for (i = 0; i < payn; i++)
{
if (o < pays[i].o)
{
lo = pays[i].o - o;
while (lo > 0)
{
l2 = lo > sizeof(buf) ? sizeof(buf) : lo;
if (fread(buf, l2, 1, fp) != 1)
{
fprintf(stderr, "%s: read error\n", iso);
exit(1);
}
if (cfp->write(cfp, buf, l2) != l2)
{
fprintf(stderr, "write error\n");
exit(1);
}
lo -= l2;
}
o = pays[i].o;
}
o += pays[i].l;
if (fseeko64(fp, o, SEEK_SET))
{
fprintf(stderr, "%s: seek error\n", iso);
exit(1);
}
}
/* now to EOF */
while ((l = fread(buf, 1, sizeof(buf), fp)) > 0)
{
if (cfp->write(cfp, buf, l) != l)
{
fprintf(stderr, "write error\n");
exit(1);
}
}
if (ferror(fp))
{
fprintf(stderr, "%s: read error\n", iso);
exit(1);
}
if (fp != stdin)
fclose(fp);
if (cfp->close(cfp) == -1)
{
fprintf(stderr, "close error\n");
exit(1);
}
if (fflush(ofp) || (ofp != stdout && fclose(ofp) != 0))
{
fprintf(stderr, "write error\n");
exit(1);
}
}
static int
readfiso(FILE *fp, char *fiso, struct cfile **cfpp, struct rpmpay **paysp)
{
char magic[8];
unsigned int version;
struct cfile *cfp;
int i, payn, nl;
struct rpmpay *pays;
off64_t o;
if (fread(magic, 8, 1, fp) != 1)
{
fprintf(stderr, "%s: not a fragiso file\n", fiso);
exit(1);
}
if (magic[0] != 'F' || magic[1] != 'I' || magic[2] != 'S' || magic[3] != 'O')
{
fprintf(stderr, "%s: not a fragiso file\n", fiso);
exit(1);
}
version = magic[4] << 24 | magic[5] << 16 | magic[6] << 8 || magic[7];
if (version != 1)
{
fprintf(stderr, "%s: unknown fragiso version: %d\n", fiso, version);
exit(1);
}
cfp = cfile_open(CFILE_OPEN_RD, CFILE_IO_FILE, fp, CFILE_COMP_XX, CFILE_LEN_UNLIMITED, 0, 0);
if (!cfp)
{
fprintf(stderr, "could not open compression stream\n");
exit(1);
}
payn = read32(cfp);
pays = xmalloc2(payn, sizeof(*pays));
o = 0;
for (i = 0; i < payn; i++)
{
pays[i].o = read64(cfp);
pays[i].l = read32(cfp);
if (pays[i].o <= o || pays[i].l < 0x70)
{
fprintf(stderr, "%s: bad fragiso\n", fiso);
exit(1);
}
o = pays[i].o;
nl = read32(cfp);
pays[i].name = xmalloc(nl + 1);
if (cfp->read(cfp, pays[i].name, nl) != nl)
{
fprintf(stderr, "read error\n");
exit(1);
}
pays[i].name[nl] = 0;
if (cfp->read(cfp, pays[i].lmd5, 16) != 16)
{
fprintf(stderr, "read error\n");
exit(1);
}
if (cfp->read(cfp, pays[i].hmd5, 16) != 16)
{
fprintf(stderr, "read error\n");
exit(1);
}
}
*cfpp = cfp;
*paysp = pays;
return payn;
}
static char *
checknamearch(char *na)
{
int i, c, n;
n = 0;
for (i = 0; ; i++)
{
c = ((unsigned char *)na)[i];
if (c <= 32 || c == '/')
break;
if (c == '.')
{
if (i == 0 || !na[i + 1])
break;
n++;
}
}
if (c || !n)
return "unknown.unknown";
return na;
}
static void
list(struct rpmpay *pays, int payn)
{
int i, j;
for (i = 0; i < payn; i++)
{
printf("%010llx:%08x ", (unsigned long long)pays[i].o, pays[i].l);
for (j = 0; j < 16; j++)
{
putchar("0123456789abcdef"[pays[i].lmd5[j] >> 4]);
putchar("0123456789abcdef"[pays[i].lmd5[j] & 15]);
}
for (j = 0; j < 16; j++)
{
putchar("0123456789abcdef"[pays[i].hmd5[j] >> 4]);
putchar("0123456789abcdef"[pays[i].hmd5[j] & 15]);
}
printf(" %s\n", checknamearch(pays[i].name));
}
}
void
listfiso(char *fiso)
{
FILE *fp;
struct cfile *cf;
int payn;
struct rpmpay *pays;
if (!strcmp(fiso, "-"))
fp = stdin;
else if ((fp = fopen64(fiso, "r")) == 0)
{
perror(fiso);
exit(1);
}
payn = readfiso(fp, fiso, &cf, &pays);
cf->close(cf);
if (fp != stdin)
fclose(fp);
list(pays, payn);
}
void
listiso(char *iso)
{
FILE *fp;
int payn, i, j;
struct rpmpay *pays;
if (!strcmp(iso, "-"))
fp = stdin;
else if ((fp = fopen64(iso, "r")) == 0)
{
perror(iso);
exit(1);
}
payn = rpmoffs(fp, iso, &pays);
if (fp != stdin)
fclose(fp);
for (i = j = 0; i < payn; i++)
{
if (i && pays[i - 1].o == pays[i].o)
continue;
if (i != j)
pays[j] = pays[i];
j++;
}
payn = j;
list(pays, payn);
}
void
assemble(char *fiso, char *dir, char *iso)
{
FILE *fp, *rfp, *ofp;
struct cfile *cf;
int i, payn;
struct rpmpay *pays;
char *dbuf;
int dl;
off64_t o, lo;
unsigned char buf[8192];
int l2;
unsigned int l, cl = 0, cl2;
MD5_CTX ctx;
int start;
unsigned char lmd5[16];
dl = strlen(dir) + 1;
dbuf = xmalloc(dl + 10 + 1 + 8 + 1);
strcpy(dbuf, dir);
dbuf[dl - 1] = '/';
if (!strcmp(fiso, "-"))
fp = stdin;
else if ((fp = fopen64(fiso, "r")) == 0)
{
perror(fiso);
exit(1);
}
payn = readfiso(fp, fiso, &cf, &pays);
if (!strcmp(iso, "-"))
ofp = stdout;
else if ((ofp = fopen64(iso, "w")) == 0)
{
perror(iso);
exit(1);
}
o = 0;
for (i = 0; i < payn; i++)
{
if (o < pays[i].o)
{
lo = pays[i].o - o;
while (lo > 0)
{
l2 = lo > sizeof(buf) ? sizeof(buf) : lo;
if (cf->read(cf, buf, l2) != l2)
{
fprintf(stderr, "%s: read error\n", fiso);
exit(1);
}
if (fwrite(buf, l2, 1, ofp) != 1)
{
fprintf(stderr, "%s: write error\n", iso);
exit(1);
}
lo -= l2;
}
}
o = pays[i].o;
sprintf(dbuf + dl, "%010llx:%08x", (unsigned long long)pays[i].o, pays[i].l);
if ((rfp = fopen64(dbuf, "r")) == 0)
{
perror(dbuf);
exit(1);
}
l = pays[i].l;
rpmMD5Init(&ctx);
start = 1;
while (l > 0)
{
l2 = l > sizeof(buf) ? sizeof(buf) : l;
if (fread(buf, l2, 1, rfp) != 1)
{
fprintf(stderr, "%s: read error\n", dbuf);
exit(1);
}
if (start)
{
if (get4n(buf) != 0xedabeedb || get4n(buf + 0x60) != 0x8eade801)
{
fprintf(stderr, "%s: not a rpm\n", dbuf);
exit(1);
}
cl = 0x70 + get4n(buf + 0x68) * 16 + get4n(buf + 0x6c);
if ((cl & 7) != 0)
cl += 8 - (cl & 7);
if (cl > pays[i].l)
{
fprintf(stderr, "%s: bad rpm\n", dbuf);
exit(1);
}
start = 0;
}
if (cl)
{
cl2 = cl > l2 ? l2 : cl;
rpmMD5Update(&ctx, buf, cl2);
cl -= cl2;
}
if (fwrite(buf, l2, 1, ofp) != 1)
{
fprintf(stderr, "%s: write error\n", iso);
exit(1);
}
l -= l2;
}
fclose(rfp);
rpmMD5Final(lmd5, &ctx);
if (memcmp(lmd5, pays[i].lmd5, 16))
{
fprintf(stderr, "%s: rpm does not match\n", dbuf);
exit(1);
}
o += pays[i].l;
}
while ((l2 = cf->read(cf, buf, sizeof(buf))) > 0)
{
if (fwrite(buf, l2, 1, ofp) != 1)
{
fprintf(stderr, "%s: write error\n", iso);
exit(1);
}
}
if (l2)
{
fprintf(stderr, "%s: read error\n", fiso);
exit(1);
}
if (fflush(ofp) || (ofp != stdout && fclose(ofp) != 0))
{
fprintf(stderr, "%s: write error\n", iso);
exit(1);
}
}
void