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makedeltarpm.c
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makedeltarpm.c
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/*
* Copyright (c) 2004 Michael Schroeder ([email protected])
*
* This program is licensed under the BSD license, read LICENSE.BSD
* for further information
*/
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <unistd.h>
#include <string.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <bzlib.h>
#include <zlib.h>
#include <lzma.h>
#include "util.h"
#include "md5.h"
#include "rpmhead.h"
#include "rpml.h"
#include "cpio.h"
#include "delta.h"
#include "cfile.h"
#include "deltarpm.h"
char *
headtofiles(struct rpmhead *h, struct rpmlfile **filesp, int *nfilesp)
{
char *nevr, *n;
int cnt, i;
struct rpmlfile *files;
unsigned int *fileflags, *filemodes;
char **filelist, **filemd5s;
nevr = headtonevr(h);
if (!nevr)
return 0;
filelist = headexpandfilelist(h, &cnt);
if (!filelist || !cnt)
{
*nfilesp = 0;
*filesp = 0;
return nevr;
}
fileflags = headint32(h, TAG_FILEFLAGS, (int *)0);
filemd5s = headstringarray(h, TAG_FILEMD5S, (int *)0);
filemodes = headint16(h, TAG_FILEMODES, (int *)0);
files = xmalloc2(cnt, sizeof(*files));
for (i = 0; i < cnt; i++)
{
n = filelist[i];
if (*n == '/')
n++;
files[i].name = xmalloc(strlen(n) + 1);
strcpy(files[i].name, n);
files[i].mode = filemodes[i];
files[i].fflags = fileflags[i];
parsemd5(filemd5s[i], files[i].md5);
}
*filesp = files;
*nfilesp = cnt;
free(fileflags);
free(filemd5s);
free(filemodes);
free(filelist);
return nevr;
}
unsigned char *seq;
int seqp;
int seql;
int lastseq = -1;
int lastseqstart = 0;
void
addtoseqn(int n)
{
int l = 1, j = 8;
while (n >= j)
{
j *= 8;
l++;
}
if (seqp + l > seql * 2)
{
seq = xrealloc(seq, seql + 32);
seql += 32;
}
while (l-- > 0)
{
if (seqp & 1)
seq[seqp / 2] |= (n & 7) | (l ? 8 : 0);
else
seq[seqp / 2] = ((n & 7) | (l ? 8 : 0)) << 4;
seqp++;
n >>= 3;
}
}
void
addtoseq(int i)
{
int n;
// fprintf(stderr, "addtoseq %d lastseqstart=%d lastseq=%d\n", i, lastseqstart, lastseq);
if (i == lastseq + 1)
{
lastseq = i;
return;
}
n = lastseq - lastseqstart + 1;
if (n)
addtoseqn(n);
if (i > lastseq + 1 && lastseq >= 0)
{
addtoseqn(i - lastseq - 1);
}
else if (i != -1)
{
addtoseqn(0);
addtoseqn(i);
}
lastseq = lastseqstart = i;
}
struct prune {
char *name;
};
struct prune *prunes;
int prunen;
void
read_prunelist(char *file)
{
FILE *fp;
char *buf, *bp;
int i, c, bufl;
struct prune *p;
if ((fp = fopen(file, "r")) == 0)
{
perror(file);
exit(1);
}
bufl = 256;
buf = xmalloc(256);
prunes = xmalloc(sizeof(*prunes) * 16);
for (i = 0;;)
{
c = getc(fp);
if (c && c != EOF && c != '\n')
{
buf[i++] = c;
if (i == bufl)
{
bufl += 256;
buf = xrealloc(buf, bufl);
}
continue;
}
buf[i] = 0;
bp = buf;
if (*bp == '/')
bp++;
else if (*bp == '.' && bp[1] == '/')
bp += 2;
if (!*bp && c == EOF)
break;
if (!*bp)
continue;
if ((prunen & 15) == 0)
prunes = xrealloc2(prunes, prunen + 16, sizeof(*prunes));
p = prunes + prunen++;
p->name = xmalloc(i + 1 - (bp - buf));
memcpy(p->name, bp, i + 1 - (bp - buf));
i = 0;
}
fclose(fp);
}
int
is_pruned(char *n)
{
int i;
struct prune *p = prunes;
for (i = 0; i < prunen; i++, p++)
if (!strcmp(p->name, n))
return 1;
return 0;
}
int
is_unpatched(char *n, struct rpmlfile *files1, int nfiles1, struct rpmlfile *files2, int nfiles2, char *md5s)
{
int i;
unsigned char md5[16];
for (i = 0; i < nfiles2; i++)
if (!strcmp(n, files2[i].name))
break;
if (i == nfiles2)
return 0;
if (!(files2[i].fflags & FILE_UNPATCHED))
return 0;
for (i = 0; i < nfiles1; i++)
if (!strcmp(n, files1[i].name))
break;
if (i == nfiles1)
return 1; /* should not happen... */
parsemd5(md5s, md5);
if (memcmp(md5, files1[i].md5, 16))
return 1; /* file content may be different */
return 0;
}
struct streamdata {
bsuint bsize;
unsigned char *old;
bsuint oldl;
bsuint oldskip;
int oldeof;
unsigned char *new;
bsuint newl;
bsuint newskip;
int neweof;
struct cfile *newf;
unsigned char *xnewdata;
bsuint xnewdatal;
void *stepd;
bsuint scan;
bsuint lastpos;
bsuint lastscan;
struct cfile *cfa; /* add block */
struct cfile *cfi; /* in data */
struct instr *instr;
int instrlen;
};
struct streamdata sd; /* hack: global for now */
void
addtocpio_stream(unsigned char *d, int l)
{
bsuint bsize = sd.bsize;
if (sd.lastscan == sd.newl && sd.neweof)
{
sd.oldskip += sd.oldl + l;
sd.oldl = 0;
return;
}
for (;;)
{
if (sd.oldl < bsize && !sd.oldeof)
{
int l2 = bsize - sd.oldl;
if (l2 > l)
l2 = l;
memcpy(sd.old + sd.oldl, d, l2);
sd.oldl += l2;
l -= l2;
d += l2;
if (sd.oldl < bsize)
return;
}
while (sd.newl < bsize && !sd.neweof)
{
int l2 = bsize - sd.newl;
if (sd.xnewdatal)
{
if (l2 > sd.xnewdatal)
l2 = sd.xnewdatal;
memcpy(sd.new + sd.newl, sd.xnewdata, l2);
sd.newl += l2;
sd.xnewdata += l2;
sd.xnewdatal -= l2;
continue;
}
l2 = sd.newf->read(sd.newf, sd.new + sd.newl, l2);
if (l2 < 0)
{
fprintf(stderr, "payload read failed\n");
exit(1);
}
if (l2 == 0)
sd.neweof = 1;
sd.newl += l2;
}
if (sd.lastscan != sd.newl)
{
struct instr instr;
mkdiff_step(sd.stepd, sd.old, sd.oldl, sd.new, sd.newl, &instr, &sd.scan, &sd.lastpos, &sd.lastscan);
if (instr.copyout && !sd.oldeof && (sd.lastscan == sd.newl || instr.copyoutoff + instr.copyout == sd.oldl))
{
/* incomplete match, ignore indata part */
instr.copyin = 0;
sd.scan = sd.lastscan = instr.copyinoff;
sd.lastpos = instr.copyoutoff + instr.copyout;
}
else if (!instr.copyout && sd.lastscan == sd.newl)
{
/* no match found in old data, advance if we're behind */
if (sd.lastpos + sd.oldskip < sd.lastscan + sd.newskip)
sd.lastpos = sd.oldl;
}
/* printf("INSTR: %d@%d %d@%d\n", instr.copyout, instr.copyoutoff + sd.oldskip, instr.copyin, instr.copyinoff + sd.newskip); */
if (instr.copyin)
{
if (instr.copyinoff + instr.copyin > sd.newl)
abort();
if (sd.cfi->write(sd.cfi, sd.new + instr.copyinoff, instr.copyin) != instr.copyin)
{
fprintf(stderr, "could not create indata block\n");
exit(1);
}
}
if (instr.copyout && sd.cfa)
{
bsuint lenf = instr.copyout;
bsuint lastpos = instr.copyoutoff;
bsuint lastscan = instr.copyinoff - lenf;
if (instr.copyoutoff + instr.copyout > sd.oldl)
abort();
if (instr.copyinoff - lenf + instr.copyout > sd.newl)
abort();
while (lenf > 0)
{
unsigned char addblk[4096];
int len2, i;
len2 = lenf > 4096 ? 4096 : lenf;
for (i = 0; i < len2; i++)
addblk[i] = sd.new[lastscan + i] - sd.old[lastpos + i];
if (sd.cfa->write(sd.cfa, addblk, len2) != len2)
{
fprintf(stderr, "could not create compressed add block\n");
exit(1);
}
lastscan += len2;
lastpos += len2;
lenf -= len2;
}
}
instr.copyinoff += sd.newskip;
instr.copyoutoff += sd.oldskip;
if (sd.instrlen && sd.instr[sd.instrlen - 1].copyin == 0 && sd.instr[sd.instrlen - 1].copyoutoff + sd.instr[sd.instrlen - 1].copyout == instr.copyoutoff)
{
/* just add to last instruction */
sd.instr[sd.instrlen - 1].copyin = instr.copyin;
sd.instr[sd.instrlen - 1].copyinoff = instr.copyinoff;
sd.instr[sd.instrlen - 1].copyout += instr.copyout;
}
else if (instr.copyin || instr.copyout)
{
if ((sd.instrlen & 31) == 0)
{
if (sd.instr)
sd.instr = realloc(sd.instr, sizeof(*sd.instr) * (sd.instrlen + 32));
else
sd.instr = malloc(sizeof(*sd.instr) * (sd.instrlen + 32));
if (!sd.instr)
{
fprintf(stderr, "out of memory\n");
exit(1);
}
}
sd.instr[sd.instrlen] = instr;
sd.instrlen++;
}
}
if (sd.lastscan > bsize / 4 && !sd.neweof)
{
if (sd.newl > sd.lastscan)
memmove(sd.new, sd.new + sd.lastscan, sd.newl - sd.lastscan);
sd.newl -= sd.lastscan;
sd.newskip += sd.lastscan;
sd.scan -= sd.lastscan;
sd.lastscan = 0;
}
if (sd.lastpos > bsize / 2 && !sd.oldeof)
{
bsuint move = sd.lastpos - bsize / 4;
if (sd.lastpos + sd.oldskip + bsize < sd.lastscan + sd.newskip)
move = sd.lastpos;
if (move > sd.lastpos)
move = sd.lastpos;
if (sd.oldl > move)
memmove(sd.old, sd.old + move, sd.oldl - move);
sd.oldl -= move;
sd.oldskip += move;
sd.lastpos -= move;
mkdiff_step_freedata(sd.stepd);
}
if (sd.lastscan == sd.newl && sd.neweof)
{
sd.oldskip += sd.oldl + l;
sd.oldl = 0;
mkdiff_step_freedata(sd.stepd);
return;
}
}
}
void
addtocpio(unsigned char **cpiop, bsuint *cpiol, unsigned char *d, int l)
{
bsuint cpl = *cpiol;
if (*cpiop == (unsigned char *)&sd)
{
*cpiol += l;
addtocpio_stream(d, l);
return;
}
if (cpl + l < cpl || cpl + l + 65535 < cpl + l)
{
fprintf(stderr, "cpio archive to big\n");
exit(1);
}
if (cpl == 0 || ((cpl - 1) & 65535) + l >= 65536)
*cpiop = xrealloc(*cpiop, (cpl + l + 65535) & ~65535);
memcpy(*cpiop + cpl, d, l);
*cpiol = cpl + l;
}
void
convertinstr(struct instr *instr, int instrlen, struct deltarpm *d)
{
int i, j;
bsuint x1, x2, x3, off;
unsigned int *b1;
int nb1;
unsigned int *b2;
int nb2;
b1 = b2 = 0;
nb1 = nb2 = 0;
j = 0;
off = 0;
for (i = 0; i < instrlen; i++)
{
x1 = instr[i].copyout;
x2 = instr[i].copyin;
x3 = instr[i].copyoutoff;
if (!x1 && !x2)
continue;
if (x1)
{
retry1:
if ((nb2 & 15) == 0)
b2 = xrealloc2(b2, nb2 + 16, 2 * sizeof(unsigned int));
if (x3 > off && x3 - off >= 0x80000000)
{
b2[2 * nb2] = 0x7fffffff;
b2[2 * nb2 + 1] = 0;
nb2++;
off += 0x7fffffff;
j++;
goto retry1;
}
if (x3 < off && off - x3 >= 0x80000000)
{
b2[2 * nb2] = -0x7fffffff;
b2[2 * nb2 + 1] = 0;
nb2++;
off -= 0x7fffffff;
j++;
goto retry1;
}
b2[2 * nb2] = (int)(x3 - off);
if (x1 >= 0x80000000)
{
b2[2 * nb2 + 1] = 0x7fffffff;
nb2++;
x1 -= 0x7fffffff;
off = x3 = x3 + 0x7fffffff;
j++;
goto retry1;
}
b2[2 * nb2 + 1] = x1;
nb2++;
off = x3 + x1;
j++;
}
if (x2)
{
retry2:
if ((nb1 & 15) == 0)
b1 = xrealloc2(b1, nb1 + 16, 2 * sizeof(unsigned int));
b1[2 * nb1] = j;
j = 0;
if (x2 >= 0x80000000)
{
b1[2 * nb1 + 1] = 0x7fffffff;
x2 -= 0x7fffffff;
nb1++;
goto retry2;
}
b1[2 * nb1 + 1] = x2;
nb1++;
}
}
if (j)
{
if ((nb1 & 15) == 0)
b1 = xrealloc2(b1, nb1 + 16, 2 * sizeof(unsigned int));
b1[2 * nb1] = j;
b1[2 * nb1 + 1] = 0;
nb1++;
}
d->inn = nb1;
d->in = b1;
d->outn = nb2;
d->out = b2;
}
unsigned char **
createindatalist(struct instr *instr, int instrlen, struct deltarpm *d, unsigned char *new)
{
int i, j;
bsuint off, left, todo;
unsigned char **indatalist;
left = off = 0;
j = 0;
d->inlen = 0;
indatalist = xcalloc(d->inn, sizeof(unsigned char *));
for (i = 0; i < d->inn; i++)
{
todo = d->in[2 * i + 1];
while (!left && todo)
{
off = instr[j].copyinoff;
left = instr[j].copyin;
j++;
}
indatalist[i] = new + off;
off += todo;
left -= todo;
d->inlen += todo;
}
return indatalist;
}
int
str2comp(char *comp)
{
int n = strlen(comp);
if (n > 2 && n < 20 && comp[n - 2] == '.' && comp[n - 1] >= '0' && comp[n - 1] <= '9')
{
char buf[20];
strcpy(buf, comp);
buf[n - 2] = 0;
return cfile_setlevel(str2comp(buf), comp[n - 1] - '0');
}
if (!strcmp(comp, "bzip2"))
return CFILE_COMP_BZ;
if (!strcmp(comp, "gzip"))
return CFILE_COMP_GZ;
#ifdef CFILE_COMP_GZ_RSYNC
if (!strcmp(comp, "gzip rsyncable"))
return CFILE_COMP_GZ_RSYNC;
#endif
if (!strcmp(comp, "lzma"))
return CFILE_COMP_LZMA;
if (!strcmp(comp, "xz"))
return CFILE_COMP_XZ;
if (!strcmp(comp, "zstd"))
return CFILE_COMP_ZSTD;
if (!strcmp(comp, "zstd threaded"))
return CFILE_COMP_ZSTD_THREADED;
if (!strcmp(comp, "uncompressed"))
return CFILE_COMP_UN;
fprintf(stderr, "unknown compression type: %s\n", comp);
exit(1);
}
void
createaddblock(struct instr *instr, int instrlen, struct deltarpm *d, unsigned char *old, unsigned char *new, int comp)
{
struct cfile *cfa;
unsigned int l, l2;
unsigned char blk[4096];
unsigned char *o;
int i, j;
cfa = cfile_open(CFILE_OPEN_WR, CFILE_IO_ALLOC, &d->addblk, comp, CFILE_LEN_UNLIMITED, 0, 0);
if (!cfa)
{
fprintf(stderr, "could not create compressed add block\n");
exit(1);
}
for (i = 0; i < instrlen; i++)
{
l = instr[i].copyout;
o = old + instr[i].copyoutoff;
while (l)
{
l2 = l > sizeof(blk) ? sizeof(blk) : l;
for (j = 0; j < l2; j++)
blk[j] = new[j] - o[j];
if (cfa->write(cfa, blk, l2) != l2)
{
fprintf(stderr, "could not create compressed add block\n");
exit(1);
}
new += l2;
o += l2;
l -= l2;
}
new += instr[i].copyin;
}
d->addblklen = cfa->close(cfa);
}
void
write_seqfile(struct deltarpm *d, char *seqfile)
{
FILE *ifp;
int i;
if ((ifp = fopen(seqfile, "w")) == 0)
{
perror(seqfile);
exit(1);
}
fprintf(ifp, "%s-", d->nevr);
for (i = 0; i < d->seql; i++)
fprintf(ifp, "%02x", d->seq[i]);
fprintf(ifp, "\n");
if (fclose(ifp))
{
perror("fclose seqfile");
exit(1);
}
}
static int
in_multilib_dir(char *fn)
{
char *dirs[] = { "lib/", "lib64/", "lib32/", NULL };
int i;
for (i = 0; dirs[i] != NULL; i++)
if (strstr(fn, dirs[i]) != NULL)
return 1;
return 0;
}
int
main(int argc, char **argv)
{
char *rpmname;
unsigned char rpmlead[96];
struct rpmhead *h, *sigh;
char *nevr;
int filecnt;
char **filenames, **filemd5s, **filelinktos;
unsigned int *fileflags, *filemodes, *filerdevs, *filesizes, *fileverify, *filecolors;
int digestalgo = 1;
unsigned int *digestalgoarray;
int i;
int fd, nfd;
struct cfile *bfd;
struct cpiophys cph;
char *namebuf;
int namebufl;
char *np;
char buf[4096];
int c, skip;
char *prunelist = 0;
int cpiocnt = 0;
int skipped_notfound = 0;
int skipped_pruned = 0;
int skipped_unpatched = 0;
int skipped_badsize = 0;
int skipped_fileflags = 0;
int skipped_verifyflags = 0;
int skipped_multilib = 0;
int skipped_all = 0;
int pinfo = 0;
struct rpmlfile *files1 = 0;
int nfiles1 = 0;
char *nevr1 = 0;
struct rpmlfile *files2 = 0;
int nfiles2 = 0;
char *nevr2 = 0;
struct rpmhead *h2 = 0;
char *seqfile = 0;
MD5_CTX seqmd5;
unsigned char seqmd5res[16];
unsigned char *oldcpio = 0;
bsuint oldcpiolen = 0;
unsigned char *newcpio = 0;
bsuint newcpiolen = 0;
bsuint cpiopos, oldadjust;
unsigned int *offadjs = 0;
unsigned int offadjn = 0;
char *payformat;
MD5_CTX fullmd5;
unsigned char fullmd5res[16];
unsigned int fullsize = 0;
struct cfile *newbz;
struct instr *instr = 0;
int instrlen = 0;
int verbose = 0;
int version = 3;
struct deltarpm d;
unsigned char **indatalist = 0;
int rpmonly = 0;
int alone = 0;
FILE *vfp = 0;
char *compopt = 0;
int paycomp = CFILE_COMP_XX;
int addblkcomp = CFILE_COMP_BZ;
int targetcomp = CFILE_COMP_XX;
char *payloadflags;
bsuint stream = 0;
memset(&d, 0, sizeof(d));
memset(&sd, 0, sizeof(sd));
while ((c = getopt(argc, argv, "vV:prl:s:z:um:")) != -1)
{
switch (c)
{
case 'l':
prunelist = optarg;
break;
case 'u':
alone = 1;
break;
case 's':
seqfile = optarg;
break;
case 'v':
verbose++;
break;
case 'V':
version = atoi(optarg);
break;
case 'p':
pinfo = 1;
break;
case 'r':
rpmonly = 1;
break;
case 'z':
compopt = optarg;
break;
case 'm':
stream = atoi(optarg) * (1024 * 256);
break;
default:
fprintf(stderr, "usage: makedeltarpm [-l <file>] [-s seq] oldrpm newrpm deltarpm\n");
exit(1);
}
}
if (verbose)
vfp = !strcmp("-", argv[argc - 1]) ? stderr : stdout;
if (compopt)
{
char *c2 = strchr(compopt, ',');
if (c2)
*c2++ = 0;
if (*compopt && strcmp(compopt, "rpm") != 0)
paycomp = str2comp(compopt);
if (c2)
{
if (!strcmp(c2, "off") != 0)
addblkcomp = -1;
else
addblkcomp = str2comp(c2);
}
}
if (prunelist)
read_prunelist(prunelist);
if (argc - optind != (pinfo ? 5 : 3) - alone)
{
fprintf(stderr, "usage: makedeltarpm [-l <file>] [-s seq] oldrpm newrpm deltarpm\n");
exit(1);
}
if (version != 1 && version != 2 && version != 3)
{
fprintf(stderr, "illegal version: %d\n", version);
exit(1);
}
if (pinfo)
{
FILE *pfp;
int pfd;
pfp = fopen(argv[argc - 5 + alone], "r");
if (!pfp)
{
perror(argv[argc - 5 + alone]);
exit(1);
}
nevr1 = rpmlread(pfp, argv[argc - 5 + alone], 0, &files1, &nfiles1);
fclose(pfp);
pfd = open(argv[argc - 4 + alone], O_RDONLY);
if (pfd < 0)
{
perror(argv[argc - 4 + alone]);
exit(1);
}
if (read(pfd, rpmlead, 4) != 4)
{
fprintf(stderr, "%s: not a rpm or rpmlist\n", argv[argc - 4 + alone]);
exit(1);
}
if (rpmlead[0] != 0xed || rpmlead[1] != 0xab || rpmlead[2] != 0xee || rpmlead[3] != 0xdb)
{
pfp = fdopen(pfd, "r");
if (!pfp)
{
perror(argv[argc - 4 + alone]);
exit(1);
}
nevr2 = rpmlread(pfp, argv[argc - 4 + alone], 1, &files2, &nfiles2);
fclose(pfp);
}
else
{
if (read(pfd, rpmlead + 4, 92) != 92 || rpmlead[4] != 0x03 || rpmlead[0x4e] != 0 || rpmlead[0x4f] != 5)
{
fprintf(stderr, "%s: not a v3 rpm or not new header styles\n", argv[argc - 4 + alone]);
exit(1);
}
h2 = readhead(pfd, 1);
if (!h2)
{
fprintf(stderr, "could not read signature header\n");
exit(1);
}
free(h2);
h2 = readhead(pfd, 0);
if (!h2)
{
fprintf(stderr, "could not read header\n");
exit(1);
}
close(pfd);
nevr2 = headtofiles(h2, &files2, &nfiles2);
}
}
rpmMD5Init(&seqmd5);
/* open old rpm */
/* (if alone == 1, oldrpm == newrpm) */
rpmname = argv[argc - 3 + alone];
if (verbose >= 2)
fprintf(vfp, "Old: %s\n", argv[argc - 3 + alone]);
if (!strcmp(rpmname, "-"))
fd = 0;
else if ((fd = open(rpmname, O_RDONLY)) < 0)
{
perror(rpmname);
exit(1);
}
if (read(fd, rpmlead, 96) != 96 || rpmlead[0] != 0xed || rpmlead[1] != 0xab || rpmlead[2] != 0xee || rpmlead[3] != 0xdb)
{
fprintf(stderr, "%s: not a rpm\n", rpmname);
exit(1);
}
if (rpmlead[4] != 0x03 || rpmlead[0x4e] != 0 || rpmlead[0x4f] != 5)
{
fprintf(stderr, "%s: not a v3 rpm or not new header styles\n", rpmname);
exit(1);
}
sigh = readhead(fd, 1);
if (!sigh)
{
fprintf(stderr, "could not read signature header\n");
exit(1);
}
h = readhead(fd, 0);
if (!h)
{
fprintf(stderr, "could not read header\n");
exit(1);
}
nevr = headtonevr(h);
if (alone && rpmonly)
{
/* this mode just updates the lead and signatures, no need to do a real diff */
int l;
if (verbose)
fprintf(vfp, "reading rpm header...\n");
rpmMD5Init(&fullmd5);
/* don't have to compare, write a "no diff" deltarpm */
d.h = 0;
d.name = argv[argc - 1];
d.version = 0x444c5430 + version;
memcpy(d.rpmlead, rpmlead, 96);
d.leadl = 96 + 16 + sigh->cnt * 16 + sigh->dcnt;
d.lead = xmalloc(d.leadl);
memcpy(d.lead, rpmlead, 96);
memcpy(d.lead + 96, sigh->intro, 16);
memcpy(d.lead + 96 + 16, sigh->data, d.leadl - 96 - 16);
d.inn = d.outn = 0;
d.in = d.out = 0;
d.nevr = nevr;
d.seql = 16;
d.seq = xmalloc(d.seql);
/* calculate seqmd5 and targetmd5 */
rpmMD5Update(&fullmd5, d.lead , d.leadl);
rpmMD5Update(&fullmd5, h->intro , 16);
rpmMD5Update(&fullmd5, h->data, 16 * h->cnt + h->dcnt);
rpmMD5Update(&seqmd5, h->intro , 16);
rpmMD5Update(&seqmd5, h->data, 16 * h->cnt + h->dcnt);
fullsize = d.leadl + 16 + 16 * h->cnt + h->dcnt;
while ((l = read(fd, buf, sizeof(buf))) > 0)
{
rpmMD5Update(&fullmd5, (unsigned char *)buf, l);
rpmMD5Update(&seqmd5, (unsigned char *)buf, l);
fullsize += l;
}
if (l == -1)
{
fprintf(stderr, "read error\n");
exit(1);
}
rpmMD5Final(d.seq, &seqmd5);
rpmMD5Final(d.targetmd5, &fullmd5);
targetcomp = CFILE_COMP_UN;
if (paycomp == CFILE_COMP_XX)
paycomp = CFILE_COMP_GZ; /* no need for better compression */
if (addblkcomp == CFILE_COMP_XX)
addblkcomp = CFILE_COMP_GZ;
d.targetsize = fullsize;
d.targetcomp = targetcomp;
d.targetcomppara = 0;
d.targetcompparalen = 0;
d.targetnevr = headtonevr(h);
d.compheadlen = 16 + 16 * h->cnt + h->dcnt;
d.offadjn = 0;
d.offadjs = 0;
d.payformatoff = 0;
d.outlen = 0;
d.deltacomp = paycomp;
d.addblk = 0;
d.addblklen = 0;
if (verbose)
fprintf(vfp, "writing delta rpm...\n");
writedeltarpm(&d, 0);
if (seqfile)
write_seqfile(&d, seqfile);
sigh = xfree(sigh);
h = xfree(h);
d.seq = xfree(d.seq);
d.seql = 0;
d.lead = xfree(d.lead);
d.leadl = 0;
seq = xfree(seq);
d.targetnevr = xfree(d.targetnevr);
exit(0);
}
if (!alone)
sigh = xfree(sigh);
if (pinfo)
{
if (strcmp(nevr, nevr1) != 0)
{
fprintf(stderr, "pinfo rpmlist1 (%s) does not match rpm (%s)\n", nevr1, nevr);
exit(1);
}
if (strcmp(nevr, nevr2) != 0)
{
fprintf(stderr, "pinfo rpmlist2 (%s) does not match rpm (%s)\n", nevr2, nevr);
exit(1);
}
}
filenames = headexpandfilelist(h, &filecnt);
fileflags = headint32(h, TAG_FILEFLAGS, (int *)0);
filemd5s = headstringarray(h, TAG_FILEMD5S, (int *)0);
filerdevs = headint16(h, TAG_FILERDEVS, (int *)0);