The following commit has been merged in the master branch:
commit f2115151c19ff37b305296c23225807b0832086b
Author: Guillem Jover <[email protected]>
Date: Fri Jul 2 06:15:26 2010 +0200
dpkg-split: Rewrite mksplit in C
diff --git a/debian/changelog b/debian/changelog
index ff780b7..7bedacf 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -60,6 +60,7 @@ dpkg (1.15.8) UNRELEASED; urgency=low
stat_halfconfigured and “removal-failed” for stat_halfinstalled.
* Check version syntax when parsing it from libdpkg based programs.
Closes: #574704
+ * Rewrite mksplit in C, and merge it into dpkg-split.
[ Updated programs translations ]
* Catalan (Guillem Jover).
diff --git a/debian/dpkg.install b/debian/dpkg.install
index 1b1b998..c3106d6 100644
--- a/debian/dpkg.install
+++ b/debian/dpkg.install
@@ -12,7 +12,6 @@ usr/bin/dpkg-split
usr/bin/dpkg-statoverride
usr/bin/dpkg-trigger
usr/bin/update-alternatives
-usr/lib/dpkg/mksplit
usr/sbin
usr/share/dpkg
usr/share/locale/*/LC_MESSAGES/dpkg.mo
diff --git a/dpkg-split/.gitignore b/dpkg-split/.gitignore
index dedc3fc..26aab39 100644
--- a/dpkg-split/.gitignore
+++ b/dpkg-split/.gitignore
@@ -1,2 +1 @@
dpkg-split
-mksplit
diff --git a/dpkg-split/Makefile.am b/dpkg-split/Makefile.am
index 6f6043c..64a1d27 100644
--- a/dpkg-split/Makefile.am
+++ b/dpkg-split/Makefile.am
@@ -24,20 +24,5 @@ dpkg_split_LDADD = \
../lib/compat/libcompat.a \
$(LIBINTL)
-
-pkglib_SCRIPTS = mksplit
-EXTRA_DIST = mksplit.pl
-CLEANFILES = $(pkglib_SCRIPTS)
-
-
-do_perl_subst = $(AM_V_GEN) sed -e "s:^\#![:space:]*/usr/bin/perl:\#!$(PERL):"
-
-
-%: %.pl Makefile
- @test -d `dirname $...@` || $(mkdir_p) `dirname $...@`
- $(do_perl_subst) <$< >$@
- $(AM_V_at) chmod +x $@
-
-
install-data-local:
$(mkdir_p) $(DESTDIR)$(admindir)/parts
diff --git a/dpkg-split/mksplit.pl b/dpkg-split/mksplit.pl
deleted file mode 100644
index 2950b1e..0000000
--- a/dpkg-split/mksplit.pl
+++ /dev/null
@@ -1,89 +0,0 @@
-#!/usr/bin/perl --
-# This script is only supposed to be called by dpkg-split.
-# Its arguments are:
-# <sourcefile> <partsize> <prefix> <totalsize> <partsizeallow>
<msdostruncyesno>
-# Stdin is also redirected from the source archive by dpkg-split.
-
-# Copyright © 1995 Ian Jackson <[email protected]>
-#
-# 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/>.
-
-...@argv == 6 || die "mksplit: bad invocation\n";
-
-($sourcefile,$partsize,$prefix,$orgsize,$partsizeallow,$msdos) = @ARGV;
-
-sub output {
- $!=0; $rv= `$_[0]`; $? && die "mksplit $_[0]: $! $?\n";
- $rv =~ s/\n$//; $rv =~ s/\s+$//; $rv =~ s/^\s+//;
- $rv;
-}
-
-$myversion='2.1';
-$csum= &output("md5sum <\"$sourcefile\"");
-$csum =~ s/\s.*//;
-$package= &output("dpkg-deb --field \"$sourcefile\" Package");
-$version= &output("dpkg-deb --field \"$sourcefile\" Version");
-$revision= &output("dpkg-deb --field \"$sourcefile\" Package_Revision");
-$version.= "-$revision" if length($revision);
-$nparts=int(($orgsize+$partsize-1)/$partsize);
-$startat=0;
-$showpartnum=1;
-
-$|=1;
-print("Splitting package $package into $nparts parts: ");
-
-$msdos= ($msdos eq 'yes');
-if ($msdos) {
- $prefixdir= $prefix; $prefixdir =~ s:(/?)/*[^/]+$:$1:;
- $cleanprefix= $prefix; $cleanprefix =~ s:^.*/+::;
- $cleanprefix =~ y/A-Za-z0-9+/a-za-z0-9x/;
- $cleanprefix =~ y/a-z0-9//cd;
-}
-
-sub add {
- $data .=
- sprintf("%-16s%-12d0 0 100644 %-10d%c\n%s%s",
- $_[0], time, length($_[1]), 0140, $_[1],
- (length($_[1]) & 1) ? "\n" : "");
-}
-
-while ($startat < $orgsize) {
- $dsp= "$myversion\n$package\n$version\n$csum\n$orgsize\n$partsize\n".
- "$showpartnum/$nparts\n";
- defined($thispartreallen= read(STDIN,$pd,$partsize)) || die "mksplit:
read: $!\n";
- $data= "!<arch>\n";
- print("$showpartnum ");
- &add('debian-split',$dsp);
- &add("data.$showpartnum",$pd);
- if ($thispartreallen > $partsizeallow) {
- die "Header is too long, making part too long. Your package name or
version\n".
- "numbers must be extraordinarily long, or something. Giving
up.\n";
- }
- if ($msdos) {
- $basename= "${showpartnum}of$nparts.$cleanprefix";
- $basename= substr($basename,0,9);
- $basename =~ s/^([^.]*)\.(.*)$/$2$1/;
- $basename= "$prefixdir$basename";
- } else {
- $basename= "$prefix.${showpartnum}of$nparts";
- }
- open(O,"> $basename.deb") || die("mksplit: open $basename.deb: $!\n");
- print(O $data) || die("mksplit: write $basename.deb: $!\n");
- close(O) || die("mksplit: close $basename.deb: $!\n");
- $startat += $partsize;
- $showpartnum++;
-}
-print("done\n");
-
-exit(0);
diff --git a/dpkg-split/split.c b/dpkg-split/split.c
index b583a46..d5d75f6 100644
--- a/dpkg-split/split.c
+++ b/dpkg-split/split.c
@@ -3,6 +3,7 @@
* split.c - splitting archives
*
* Copyright © 1995 Ian Jackson <[email protected]>
+ * Copyright © 2010 Guillem Jover <[email protected]>
*
* This is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@@ -21,11 +22,17 @@
#include <config.h>
#include <compat.h>
+#include <sys/types.h>
#include <sys/stat.h>
+#include <sys/wait.h>
#include <limits.h>
+#include <errno.h>
#include <fcntl.h>
+#include <libgen.h>
#include <string.h>
+#include <ctype.h>
+#include <time.h>
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
@@ -33,16 +40,210 @@
#include <dpkg/i18n.h>
#include <dpkg/dpkg.h>
#include <dpkg/dpkg-db.h>
+#include <dpkg/subproc.h>
+#include <dpkg/buffer.h>
+#include <dpkg/ar.h>
#include <dpkg/myopt.h>
#include "dpkg-split.h"
+static char *
+deb_field(const char *filename, const char *field)
+{
+ pid_t pid;
+ int p[2];
+ struct varbuf buf = VARBUF_INIT;
+ char *end;
+
+ m_pipe(p);
+
+ pid = subproc_fork();
+ if (pid == 0) {
+ /* Child writes to pipe. */
+ m_dup2(p[1], 1);
+ close(p[0]);
+ close(p[1]);
+
+ execlp(BACKEND, BACKEND, "--field", filename, field, NULL);
+ ohshite(_("failed to exec dpkg-deb to extract field value"));
+ }
+ close(p[1]);
+
+ /* Parant reads from pipe. */
+ varbufreset(&buf);
+ fd_vbuf_copy(p[0], &buf, -1, _("dpkg-deb field extraction"));
+ varbufaddc(&buf, '\0');
+
+ close(p[0]);
+
+ subproc_wait_check(pid, _("dpkg-deb field extraction"), PROCPIPE);
+
+ /* Trim down trailing junk. */
+ for (end = buf.buf + strlen(buf.buf) - 1; end - buf.buf >= 1; end--)
+ if (isspace(*end))
+ *end = '\0';
+ else
+ break;
+
+ return varbuf_detach(&buf);
+}
+
+/* Cleanup filename for use in crippled msdos systems. */
+static char *
+clean_msdos_filename(char *filename)
+{
+ char *d, *s;
+
+ for (s = d = filename; *s; d++, s++) {
+ if (*s == '+')
+ *d = 'x';
+ else if (isupper(*s))
+ *d = tolower(*s);
+ else if (islower(*s) || isdigit(*s))
+ *d = *s;
+ else
+ s++;
+ }
+
+ return filename;
+}
+
+static int
+mksplit(const char *file_src, const char *prefix, size_t partsize,
+ size_t maxpartsize, bool msdos)
+{
+ int fd_src;
+ struct stat st;
+ char hash[MD5HASHLEN + 1];
+ char *package, *version;
+ int nparts, curpart;
+ off_t startat;
+ char *prefixdir = NULL, *msdos_prefix = NULL;
+ struct varbuf file_dst = VARBUF_INIT;
+ struct varbuf partmagic = VARBUF_INIT;
+ struct varbuf partname = VARBUF_INIT;
+ char *partdata;
+
+ fd_src = open(file_src, O_RDONLY);
+ if (fd_src < 0)
+ ohshite(_("unable to open source file `%.250s'"), file_src);
+ if (fstat(fd_src, &st))
+ ohshite(_("unable to fstat source file"));
+ if (!S_ISREG(st.st_mode))
+ ohshit(_("source file `%.250s' not a plain file"), file_src);
+
+ fd_md5(fd_src, hash, -1, "md5hash");
+ lseek(fd_src, 0, SEEK_SET);
+
+ /* FIXME: Use libdpkg-deb. */
+ package = deb_field(file_src, "Package");
+ version = deb_field(file_src, "Version");
+
+ nparts = (st.st_size + partsize - 1) / partsize;
+
+ setvbuf(stdout, NULL, _IONBF, 0);
+
+ printf("Splitting package %s into %d parts: ", package, nparts);
+
+ if (msdos) {
+ char *t;
+
+ t = m_strdup(prefix);
+ prefixdir = m_strdup(dirname(t));
+ free(t);
+
+ t = m_strdup(prefix);
+ msdos_prefix = m_strdup(basename(t));
+ free(t);
+
+ prefix = clean_msdos_filename(msdos_prefix);
+ }
+
+ partdata = m_malloc(partsize);
+ curpart = 1;
+
+ for (startat = 0; startat < st.st_size; startat += partsize) {
+ int fd_dst;
+ ssize_t partrealsize;
+
+ varbufreset(&file_dst);
+ /* Generate output filename. */
+ if (msdos) {
+ struct varbuf refname = VARBUF_INIT;
+ int prefix_max;
+
+ varbufprintf(&refname, "%dof%d", curpart, nparts);
+ prefix_max = max(8 - strlen(refname.buf), 0);
+ varbufprintf(&file_dst, "%s/%.*s%.8s.deb",
+ prefixdir, prefix_max, prefix,
+ refname.buf);
+ varbuf_destroy(&refname);
+ } else {
+ varbufprintf(&file_dst, "%s.%dof%d.deb",
+ prefix, curpart, nparts);
+ }
+
+ /* Read data from the original package. */
+ partrealsize = read(fd_src, partdata, partsize);
+ if (partrealsize < 0)
+ ohshite("mksplit: read");
+
+ if ((size_t)partrealsize > maxpartsize) {
+ ohshit("Header is too long, making part too long. "
+ "Your package name or version\n"
+ "numbers must be extraordinarily long, "
+ "or something. Giving up.\n");
+ }
+
+ /* Split the data. */
+ fd_dst = open(file_dst.buf, O_CREAT | O_WRONLY, 0644);
+ if (fd_dst < 0)
+ ohshite(_("unable to open file '%s'"), file_dst.buf);
+
+ /* Write the ar header. */
+ dpkg_ar_put_magic(file_dst.buf, fd_dst);
+
+ /* Write the debian-split part. */
+ varbufprintf(&partmagic, "%s\n%s\n%s\n%s\n%zu\n%zu\n%d/%d\n",
+ SPLITVERSION, package, version, hash,
+ st.st_size, partsize, curpart, nparts);
+ dpkg_ar_member_put_mem(file_dst.buf, fd_dst, PARTMAGIC,
+ partmagic.buf, partmagic.used);
+ varbufreset(&partmagic);
+
+ /* Write the data part. */
+ varbufprintf(&partname, "data.%d", curpart);
+ dpkg_ar_member_put_mem(file_dst.buf, fd_dst, partname.buf,
+ partdata, (size_t)partrealsize);
+ varbufreset(&partname);
+
+ close(fd_dst);
+
+ printf("%d ", curpart);
+
+ curpart++;
+ }
+
+ varbuf_destroy(&file_dst);
+ varbuf_destroy(&partname);
+ varbuf_destroy(&partmagic);
+ free(partdata);
+
+ free(prefixdir);
+ free(msdos_prefix);
+
+ close(fd_src);
+
+ printf("done\n");
+
+ return 0;
+}
+
void do_split(const char *const *argv) {
const char *sourcefile, *prefix;
char *palloc;
- int l, fd;
- char partsizebuf[30], lengthbuf[30], partsizeallowbuf[30];
- struct stat stab;
+ int l;
+ size_t partsize;
sourcefile= *argv++;
if (!sourcefile)
@@ -60,17 +261,9 @@ void do_split(const char *const *argv) {
}
prefix= palloc;
}
- sprintf(partsizebuf,"%ld",maxpartsize-HEADERALLOWANCE);
- sprintf(partsizeallowbuf,"%ld",maxpartsize);
- fd= open(sourcefile,O_RDONLY);
- if (fd < 0)
- ohshite(_("unable to open source file `%.250s'"), sourcefile);
- if (fstat(fd,&stab)) ohshite(_("unable to fstat source file"));
- if (!S_ISREG(stab.st_mode)) ohshit(_("source file `%.250s' not a plain
file"),sourcefile);
- sprintf(lengthbuf,"%lu",(unsigned long)stab.st_size);
- m_dup2(fd,0);
- execl(MKSPLITSCRIPT,MKSPLITSCRIPT,
-
sourcefile,partsizebuf,prefix,lengthbuf,partsizeallowbuf,msdos?"yes":"no",
- NULL);
- ohshite(_("unable to exec mksplit"));
+ partsize = maxpartsize - HEADERALLOWANCE;
+
+ mksplit(sourcefile, prefix, partsize, maxpartsize, msdos);
+
+ exit(0);
}
--
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