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/*
* dpkg-split - splitting and joining of multipart *.deb archives
* join.c - joining
*
* Copyright © 1995 Ian Jackson <ian@chiark.greenend.org.uk>
*
* This is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <config.h>
#include <compat.h>
#include <assert.h>
#include <limits.h>
#include <string.h>
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <dpkg/i18n.h>
#include <dpkg/dpkg.h>
#include <dpkg/dpkg-db.h>
#include <dpkg/myopt.h>
#include "dpkg-split.h"
void reassemble(struct partinfo **partlist, const char *outputfile) {
FILE *output, *input;
void *buffer;
struct partinfo *pi;
unsigned int i;
size_t nr,buffersize;
printf(P_("Putting package %s together from %d part: ",
"Putting package %s together from %d parts: ",
partlist[0]->maxpartn),
partlist[0]->package,partlist[0]->maxpartn);
buffersize= partlist[0]->maxpartlen;
for (i=0; i<partlist[0]->maxpartn; i++)
if (partlist[0]->headerlen > buffersize) buffersize= partlist[0]->headerlen;
buffer= m_malloc(partlist[0]->maxpartlen);
output= fopen(outputfile,"w");
if (!output) ohshite(_("unable to open output file `%.250s'"),outputfile);
for (i=0; i<partlist[0]->maxpartn; i++) {
pi= partlist[i];
input= fopen(pi->filename,"r");
if (!input) ohshite(_("unable to (re)open input part file `%.250s'"),pi->filename);
assert(pi->headerlen <= buffersize);
nr= fread(buffer,1,pi->headerlen,input);
if (nr != pi->headerlen) rerreof(input,pi->filename);
assert(pi->thispartlen <= buffersize);
printf("%d ",i+1);
nr= fread(buffer,1,pi->thispartlen,input);
if (nr != pi->thispartlen) rerreof(input,pi->filename);
if (pi->thispartlen & 1)
if (getc(input) == EOF) rerreof(input,pi->filename);
if (ferror(input)) rerr(pi->filename);
fclose(input);
nr= fwrite(buffer,1,pi->thispartlen,output);
if (nr != pi->thispartlen) werr(outputfile);
}
if (fflush(output))
ohshite(_("unable to flush file '%s'"), outputfile);
if (fsync(fileno(output)))
ohshite(_("unable to sync file '%s'"), outputfile);
if (fclose(output)) werr(outputfile);
free(buffer);
printf(_("done\n"));
}
void addtopartlist(struct partinfo **partlist,
struct partinfo *pi, struct partinfo *refi) {
int i;
if (strcmp(pi->package,refi->package) ||
strcmp(pi->version,refi->version) ||
strcmp(pi->md5sum,refi->md5sum) ||
pi->orglength != refi->orglength ||
pi->maxpartn != refi->maxpartn ||
pi->maxpartlen != refi->maxpartlen) {
print_info(pi);
print_info(refi);
ohshit(_("files `%.250s' and `%.250s' are not parts of the same file"),
pi->filename,refi->filename);
}
i= pi->thispartn-1;
if (partlist[i])
ohshit(_("there are several versions of part %d - at least `%.250s' and `%.250s'"),
pi->thispartn, pi->filename, partlist[i]->filename);
partlist[i]= pi;
}
void do_join(const char *const *argv) {
char *p;
const char *thisarg;
struct partqueue *pq;
struct partinfo *refi, *pi, **partlist;
unsigned int i;
assert(!queue);
if (!*argv)
badusage(_("--%s requires one or more part file arguments"),
cipaction->olong);
while ((thisarg= *argv++)) {
pq= nfmalloc(sizeof(struct partqueue));
mustgetpartinfo(thisarg,&pq->info);
pq->nextinqueue= queue;
queue= pq;
}
refi= NULL;
for (pq= queue; pq; pq= pq->nextinqueue)
if (!refi || pq->info.thispartn < refi->thispartn) refi= &pq->info;
assert(refi);
partlist= nfmalloc(sizeof(struct partinfo*)*refi->maxpartn);
for (i = 0; i < refi->maxpartn; i++)
partlist[i] = NULL;
for (pq= queue; pq; pq= pq->nextinqueue) {
pi= &pq->info;
addtopartlist(partlist,pi,refi);
}
for (i=0; i<refi->maxpartn; i++) {
if (!partlist[i]) ohshit(_("part %d is missing"),i+1);
}
if (!opt_outputfile) {
p= nfmalloc(strlen(refi->package)+1+strlen(refi->version)+sizeof(DEBEXT));
strcpy(p,refi->package);
strcat(p,"-");
strcat(p,refi->version);
strcat(p,DEBEXT);
opt_outputfile = p;
}
reassemble(partlist, opt_outputfile);
}
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