static int
tar_object_skip(struct tar_archive *tar, struct tar_entry *te)
{
struct tar_context *tc = tar->ctx;
off_t size;
size = (te->size + TARBLKSZ - 1) / TARBLKSZ * TARBLKSZ;
if (size == 0)
return 0;
return fd_skip(tc->tar_fd, size, NULL);
}
void
extracthalf(const char *debar, const char *dir,
enum dpkg_tar_options taroption, int admininfo)
{
struct dpkg_error err;
const char *errstr;
char versionbuf[40];
struct deb_version version;
off_t ctrllennum, memberlen = 0;
ssize_t r;
int dummy;
pid_t c1=0,c2,c3;
int p1[2], p2[2];
int p2_out;
int arfd;
struct stat stab;
char nlc;
int adminmember = -1;
bool header_done;
enum compressor_type decompressor = COMPRESSOR_TYPE_GZIP;
if (strcmp(debar, "-") == 0)
arfd = STDIN_FILENO;
else
arfd = open(debar, O_RDONLY);
if (arfd < 0)
ohshite(_("failed to read archive '%.255s'"), debar);
if (fstat(arfd, &stab))
ohshite(_("failed to fstat archive"));
r = read_line(arfd, versionbuf, strlen(DPKG_AR_MAGIC), sizeof(versionbuf) - 1);
if (r < 0)
read_fail(r, debar, _("archive magic version number"));
if (strcmp(versionbuf, DPKG_AR_MAGIC) == 0) {
ctrllennum= 0;
header_done = false;
for (;;) {
struct ar_hdr arh;
r = fd_read(arfd, &arh, sizeof(arh));
if (r != sizeof(arh))
read_fail(r, debar, _("archive member header"));
dpkg_ar_normalize_name(&arh);
if (dpkg_ar_member_is_illegal(&arh))
ohshit(_("file '%.250s' is corrupt - bad archive header magic"), debar);
memberlen = dpkg_ar_member_get_size(debar, &arh);
if (!header_done) {
char *infobuf;
if (strncmp(arh.ar_name, DEBMAGIC, sizeof(arh.ar_name)) != 0)
ohshit(_("file '%.250s' is not a debian binary archive (try dpkg-split?)"),
debar);
infobuf= m_malloc(memberlen+1);
r = fd_read(arfd, infobuf, memberlen + (memberlen & 1));
if (r != (memberlen + (memberlen & 1)))
read_fail(r, debar, _("archive information header member"));
infobuf[memberlen] = '\0';
if (strchr(infobuf, '\n') == NULL)
ohshit(_("archive has no newlines in header"));
errstr = deb_version_parse(&version, infobuf);
if (errstr)
ohshit(_("archive has invalid format version: %s"), errstr);
if (version.major != 2)
ohshit(_("archive is format version %d.%d; get a newer dpkg-deb"),
version.major, version.minor);
free(infobuf);
header_done = true;
} else if (arh.ar_name[0] == '_') {
/* Members with ‘_’ are noncritical, and if we don't understand
* them we skip them. */
if (fd_skip(arfd, memberlen + (memberlen & 1), &err) < 0)
ohshit(_("cannot skip archive member from '%s': %s"), debar, err.str);
} else {
if (strncmp(arh.ar_name, ADMINMEMBER, strlen(ADMINMEMBER)) == 0) {
const char *extension = arh.ar_name + strlen(ADMINMEMBER);
adminmember = 1;
decompressor = compressor_find_by_extension(extension);
if (decompressor != COMPRESSOR_TYPE_NONE &&
decompressor != COMPRESSOR_TYPE_GZIP &&
decompressor != COMPRESSOR_TYPE_XZ)
ohshit(_("archive '%s' uses unknown compression for member '%.*s', "
"giving up"),
debar, (int)sizeof(arh.ar_name), arh.ar_name);
} else {
if (adminmember != 1)
ohshit(_("archive '%s' has premature member '%.*s' before '%s', "
"giving up"),
debar, (int)sizeof(arh.ar_name), arh.ar_name, ADMINMEMBER);
if (strncmp(arh.ar_name, DATAMEMBER, strlen(DATAMEMBER)) == 0) {
const char *extension = arh.ar_name + strlen(DATAMEMBER);
adminmember= 0;
decompressor = compressor_find_by_extension(extension);
if (decompressor == COMPRESSOR_TYPE_UNKNOWN)
ohshit(_("archive '%s' uses unknown compression for member '%.*s', "
"giving up"),
debar, (int)sizeof(arh.ar_name), arh.ar_name);
} else {
ohshit(_("archive '%s' has premature member '%.*s' before '%s', "
"giving up"),
debar, (int)sizeof(arh.ar_name), arh.ar_name, DATAMEMBER);
}
}
if (adminmember == 1) {
if (ctrllennum != 0)
ohshit(_("archive '%.250s' contains two control members, giving up"),
debar);
ctrllennum= memberlen;
}
if (!adminmember != !admininfo) {
if (fd_skip(arfd, memberlen + (memberlen & 1), &err) < 0)
ohshit(_("cannot skip archive member from '%s': %s"), debar, err.str);
} else {
/* Yes! - found it. */
break;
}
}
}
if (admininfo >= 2) {
printf(_(" new debian package, version %d.%d.\n"
" size %jd bytes: control archive=%jd bytes.\n"),
version.major, version.minor,
(intmax_t)stab.st_size, (intmax_t)ctrllennum);
m_output(stdout, _("<standard output>"));
}
} else if (strncmp(versionbuf, "0.93", 4) == 0) {
char ctrllenbuf[40];
int l;
l = strlen(versionbuf);
if (strchr(versionbuf, '\n') == NULL)
ohshit(_("archive has no newlines in header"));
errstr = deb_version_parse(&version, versionbuf);
if (errstr)
ohshit(_("archive has invalid format version: %s"), errstr);
r = read_line(arfd, ctrllenbuf, 1, sizeof(ctrllenbuf) - 1);
if (r < 0)
read_fail(r, debar, _("archive control member size"));
if (sscanf(ctrllenbuf, "%jd%c%d", &ctrllennum, &nlc, &dummy) != 2 ||
nlc != '\n')
ohshit(_("archive has malformatted control member size '%s'"), ctrllenbuf);
if (admininfo) {
memberlen = ctrllennum;
} else {
memberlen = stab.st_size - ctrllennum - strlen(ctrllenbuf) - l;
if (fd_skip(arfd, ctrllennum, &err) < 0)
ohshit(_("cannot skip archive control member from '%s': %s"), debar,
err.str);
}
if (admininfo >= 2) {
printf(_(" old debian package, version %d.%d.\n"
" size %jd bytes: control archive=%jd, main archive=%jd.\n"),
version.major, version.minor,
(intmax_t)stab.st_size, (intmax_t)ctrllennum,
(intmax_t)(stab.st_size - ctrllennum - strlen(ctrllenbuf) - l));
m_output(stdout, _("<standard output>"));
}
} else {
if (strncmp(versionbuf, "!<arch>", 7) == 0) {
notice(_("file looks like it might be an archive which has been\n"
" corrupted by being downloaded in ASCII mode"));
}
ohshit(_("'%.255s' is not a debian format archive"), debar);
}
m_pipe(p1);
c1 = subproc_fork();
if (!c1) {
close(p1[0]);
if (fd_fd_copy(arfd, p1[1], memberlen, &err) < 0)
ohshit(_("cannot copy archive member from '%s' to decompressor pipe: %s"),
debar, err.str);
if (close(p1[1]))
ohshite(_("cannot close decompressor pipe"));
exit(0);
}
close(p1[1]);
if (taroption) {
m_pipe(p2);
p2_out = p2[1];
} else {
p2_out = 1;
}
c2 = subproc_fork();
if (!c2) {
if (taroption)
close(p2[0]);
decompress_filter(decompressor, p1[0], p2_out,
_("decompressing archive member"));
exit(0);
}
close(p1[0]);
close(arfd);
if (taroption) close(p2[1]);
if (taroption) {
c3 = subproc_fork();
if (!c3) {
struct command cmd;
command_init(&cmd, TAR, "tar");
command_add_arg(&cmd, "tar");
if ((taroption & DPKG_TAR_LIST) && (taroption & DPKG_TAR_EXTRACT))
command_add_arg(&cmd, "-xv");
else if (taroption & DPKG_TAR_EXTRACT)
command_add_arg(&cmd, "-x");
else if (taroption & DPKG_TAR_LIST)
command_add_arg(&cmd, "-tv");
else
internerr("unknown or missing tar action '%d'", taroption);
if (taroption & DPKG_TAR_PERMS)
command_add_arg(&cmd, "-p");
if (taroption & DPKG_TAR_NOMTIME)
command_add_arg(&cmd, "-m");
command_add_arg(&cmd, "-f");
command_add_arg(&cmd, "-");
command_add_arg(&cmd, "--warning=no-timestamp");
m_dup2(p2[0],0);
close(p2[0]);
unsetenv("TAR_OPTIONS");
if (dir) {
if (chdir(dir)) {
if (errno != ENOENT)
ohshite(_("failed to chdir to directory"));
if (mkdir(dir, 0777))
ohshite(_("failed to create directory"));
if (chdir(dir))
ohshite(_("failed to chdir to directory after creating it"));
}
}
command_exec(&cmd);
}
close(p2[0]);
subproc_reap(c3, "tar", 0);
}
subproc_reap(c2, _("<decompress>"), SUBPROC_NOPIPE);
if (c1 != -1)
subproc_reap(c1, _("paste"), 0);
if (version.major == 0 && admininfo) {
/* Handle the version as a float to preserve the behaviour of old code,
* because even if the format is defined to be padded by 0's that might
* not have been always true for really ancient versions... */
while (version.minor && (version.minor % 10) == 0)
version.minor /= 10;
if (version.minor == 931)
movecontrolfiles(OLDOLDDEBDIR);
else if (version.minor == 932 || version.minor == 933)
movecontrolfiles(OLDDEBDIR);
}
}
int main(int argc, char *argv[])
{
char cwd[PATH_MAX] = { '\0' };
char *dir = NULL;
enum dpkg_tar_options taroption = DPKG_TAR_EXTRACT | DPKG_TAR_NOMTIME;
int admininfo = 0;
char *debar = argv[1];
int arfd = -1;
struct stat stab;
char versionbuf[40] = { '\0' };
ssize_t r;
off_t ctrllennum, memberlen = 0;
bool header_done;
char *infobuf = NULL;
struct dpkg_error err;
const char *errstr;
struct deb_version version;
int adminmember = -1;
enum compressor_type decompressor = COMPRESSOR_TYPE_GZIP;
char nlc;
int dummy;
int p1[2], p2[2];
pid_t c1 = 0, c2, c3;
int p2_out;
if (getcwd(cwd, PATH_MAX)) {
dir = m_malloc(PATH_MAX);
snprintf(dir, PATH_MAX - 1, "%s/extract", cwd);
}
arfd = open(debar, O_RDONLY);
if (arfd < 0)
ohshite("failed to read archive %s", debar);
if (fstat(arfd, &stab))
ohshite("failed to fstat archive");
r = read_line(arfd,
versionbuf,
strlen(DPKG_AR_MAGIC),
sizeof(versionbuf) - 1);
if (r < 0)
read_fail(r, debar, "archive magic version number");
if (strcmp(versionbuf, DPKG_AR_MAGIC) == 0) {
ctrllennum = 0;
header_done = false;
for (;;) {
struct ar_hdr arh;
r = fd_read(arfd, &arh, sizeof(arh));
if (r != sizeof(arh))
read_fail(r, debar, "archive member header");
dpkg_ar_normalize_name(&arh);
if (dpkg_ar_member_is_illegal(&arh)) {
ohshit("file '%.250s' is corrupt - bad archive header magic",
debar);
}
memberlen = dpkg_ar_member_get_size(debar, &arh);
if (!header_done) {
infobuf = NULL;
if (strncmp(arh.ar_name, DEBMAGIC, sizeof(arh.ar_name)) != 0) {
ohshit("file '%.250s' is not a debian binary archive "
"(try dpkg-split?)", debar);
}
infobuf = m_malloc(memberlen + 1);
r = fd_read(arfd, infobuf, memberlen + (memberlen & 1));
if (r != (memberlen + (memberlen & 1)))
read_fail(r, debar, "archive information header member");
infobuf[memberlen] = '\0';
if (strchr(infobuf, '\n') == NULL)
ohshit("archive has no newlines in header");
errstr = deb_version_parse(&version, infobuf);
if (errstr)
ohshit("archive has invalid format version: %s", errstr);
if (version.major != 2) {
ohshit("archive is format version %d.%d; get a newer dpkg-deb",
version.major, version.minor);
}
if (infobuf) {
free(infobuf);
infobuf = NULL;
}
header_done = true;
} else if (arh.ar_name[0] == '_') {
if (fd_skip(arfd, memberlen + (memberlen & 1), &err) < 0) {
ohshit("cannot skip archive member from '%s': %s",
debar, err.str);
}
} else {
if (strncmp(arh.ar_name, ADMINMEMBER, strlen(ADMINMEMBER)) == 0) {
const char *extension = arh.ar_name + strlen(ADMINMEMBER);
adminmember = 1;
decompressor = compressor_find_by_extension(extension);
if (decompressor != COMPRESSOR_TYPE_NONE &&
decompressor != COMPRESSOR_TYPE_GZIP &&
decompressor != COMPRESSOR_TYPE_XZ) {
ohshit("ERROR: archive '%s' uses unknown compression "
"for member '%.*s', giving up",
debar, (int)sizeof(arh.ar_name), arh.ar_name);
}
} else {
if (adminmember != 1) {
ohshit("archive '%s' has premature member '%.*s' "
"before '%s', giving up",
debar, (int)sizeof(arh.ar_name), arh.ar_name,
ADMINMEMBER);
}
if (strncmp(arh.ar_name, DATAMEMBER, strlen(DATAMEMBER)) == 0) {
const char *extension = arh.ar_name + strlen(DATAMEMBER);
adminmember = 0;
decompressor = compressor_find_by_extension(extension);
if (decompressor == COMPRESSOR_TYPE_UNKNOWN) {
ohshit("archive '%s' uses unknown "
"compression for member '%.*s', giving up",
debar, (int)sizeof(arh.ar_name), arh.ar_name);
}
} else {
ohshit("archive '%s' has premature member '%.*s' "
"before '%s', giving up",
debar, (int)sizeof(arh.ar_name), arh.ar_name, DATAMEMBER);
}
}
if (adminmember == 1) {
if (ctrllennum != 0) {
ohshit("archive '%.250s' contains two control members, giving up",
debar);
}
ctrllennum = memberlen;
}
if (!adminmember != !admininfo) {
if (fd_skip(arfd, memberlen + (memberlen & 1), &err) < 0) {
ohshit("cannot skip archive member from '%s': %s",
debar, err.str);
}
} else {
break;
}
}
}
if (admininfo >= 2) {
printf(" new debian package, version %d.%d.\n"
" size %jd bytes: control archive=%jd bytes.\n",
version.major, version.minor,
(intmax_t)stab.st_size, (intmax_t)ctrllennum);
m_output(stdout, "<standard output>");
}
} else if (strncmp(versionbuf, "0.93", 4) == 0) {
char ctrllenbuf[40] = { '\0' };
int l;
l = strlen(versionbuf);
if (strchr(versionbuf, '\n') == NULL)
ohshit("archive has no newlines in header");
errstr = deb_version_parse(&version, versionbuf);
if (errstr)
ohshit("archive has invalid format version: %s", errstr);
r = read_line(arfd, ctrllenbuf, 1, sizeof(ctrllenbuf));
if (r < 0)
read_fail(r, debar, "archive control member size");
if (sscanf(ctrllenbuf, "%jd%c%d", &ctrllennum, &nlc, &dummy) != 2 ||
nlc != '\n') {
ohshit("archive has malformatted control member size '%s'",
ctrllenbuf);
}
if (admininfo) {
memberlen = ctrllennum;
} else {
memberlen = stab.st_size - ctrllennum - strlen(ctrllenbuf) - l;
if (fd_skip(arfd, ctrllennum, &err) < 0) {
ohshit("cannot skip archive control member from '%s': %s",
debar, err.str);
}
}
if (admininfo >= 2) {
printf(" old debian package, version %d.%d.\n"
" size %jd bytes: control archive=%jd, main archive=%jd.\n",
version.major, version.minor,
(intmax_t)stab.st_size, (intmax_t)ctrllennum,
(intmax_t)(stab.st_size - ctrllennum - strlen(ctrllenbuf) - l));
m_output(stdout, "<standard output>");
}
} else {
if (strncmp(versionbuf, "!<arch>", 7) == 0) {
notice("file looks like it might be an archive which has been\n"
" corrupted by being downloaded in ASCII mode");
}
ohshit("'%.255s' is not a debian format archive", debar);
}
m_pipe(p1);
c1 = subproc_fork();
if (!c1) {
close(p1[0]);
if (fd_fd_copy(arfd, p1[1], memberlen, &err) < 0)
ohshit("cannot copy archive member from '%s' to decompressor pipe: %s",
debar, err.str);
if (close(p1[1]))
ohshite("cannot close decompressor pipe");
exit(0);
}
close(p1[1]);
if (taroption) {
m_pipe(p2);
p2_out = p2[1];
} else {
p2_out = 1;
}
c2 = subproc_fork();
if (!c2) {
if (taroption)
close(p2[0]);
decompress_filter(decompressor, p1[0], p2_out,
"decompressing archive member");
exit(0);
}
close(p1[0]);
close(arfd);
if (taroption)
close(p2[1]);
if (taroption) {
c3 = subproc_fork();
if (!c3) {
struct command cmd;
command_init(&cmd, TAR, "tar");
command_add_arg(&cmd, "tar");
if ((taroption & DPKG_TAR_LIST) && (taroption & DPKG_TAR_EXTRACT))
command_add_arg(&cmd, "-xv");
else if (taroption & DPKG_TAR_EXTRACT)
command_add_arg(&cmd, "-x");
else if (taroption & DPKG_TAR_LIST)
command_add_arg(&cmd, "-tv");
else
internerr("unknown or missing tar action '%d'", taroption);
if (taroption & DPKG_TAR_PERMS)
command_add_arg(&cmd, "-p");
if (taroption & DPKG_TAR_NOMTIME)
command_add_arg(&cmd, "-m");
command_add_arg(&cmd, "-f");
command_add_arg(&cmd, "-");
command_add_arg(&cmd, "--warning=no-timestamp");
m_dup2(p2[0],0);
close(p2[0]);
unsetenv("TAR_OPTIONS");
if (dir) {
if (chdir(dir)) {
if (errno != ENOENT)
ohshite("failed to chdir to directory");
if (mkdir(dir, 0777))
ohshite("failed to create directory");
if (chdir(dir))
ohshite("failed to chdir to directory after creating it");
}
}
command_exec(&cmd);
}
close(p2[0]);
subproc_reap(c3, "tar", 0);
}
subproc_reap(c2, "<decompress>", SUBPROC_NOPIPE);
if (c1 != -1)
subproc_reap(c1, "paste", 0);
if (version.major == 0 && admininfo) {
while (version.minor && (version.minor % 10) == 0)
version.minor /= 10;
if (version.minor == 931)
movecontrolfiles(OLDOLDDEBDIR);
else if (version.minor == 932 || version.minor == 933)
movecontrolfiles(OLDDEBDIR);
}
return 0;
}
void process_archive(const char *filename) {
static const struct tar_operations tf = {
.read = tarfileread,
.extract_file = tarobject,
.link = tarobject,
.symlink = tarobject,
.mkdir = tarobject,
.mknod = tarobject,
};
/* These need to be static so that we can pass their addresses to
* push_cleanup as arguments to the cu_xxx routines; if an error occurs
* we unwind the stack before processing the cleanup list, and these
* variables had better still exist ... */
static int p1[2];
static char *cidir = NULL;
static struct fileinlist *newconffiles, *newfileslist;
static enum pkgstatus oldversionstatus;
static struct varbuf depprobwhy;
static struct tarcontext tc;
int r, i;
pid_t pid;
struct pkgiterator *it;
struct pkginfo *pkg, *otherpkg;
char *cidirrest, *p;
char conffilenamebuf[MAXCONFFILENAME];
char *psize;
const char *pfilename;
struct fileinlist *newconff, **newconffileslastp;
struct fileinlist *cfile;
struct reversefilelistiter rlistit;
struct conffile *searchconff, **iconffileslastp, *newiconff;
struct dependency *dsearch, *newdeplist, **newdeplistlastp;
struct dependency *newdep, *dep, *providecheck;
struct deppossi *psearch, **newpossilastp, *possi, *newpossi, *pdep;
FILE *conff;
struct filenamenode *namenode;
struct stat stab, oldfs;
struct pkg_deconf_list *deconpil, *deconpiltemp;
struct pkginfo *fixbytrigaw;
cleanup_pkg_failed= cleanup_conflictor_failed= 0;
pfilename = summarize_filename(filename);
if (stat(filename,&stab)) ohshite(_("cannot access archive"));
/* We can't ‘tentatively-reassemble’ packages. */
if (!f_noact) {
if (!deb_reassemble(&filename, &pfilename))
return;
}
/* Verify the package. */
if (!f_nodebsig)
deb_verify(filename);
/* Get the control information directory. */
cidir = get_control_dir(cidir);
cidirrest = cidir + strlen(cidir);
push_cleanup(cu_cidir, ~0, NULL, 0, 2, (void *)cidir, (void *)cidirrest);
pid = subproc_fork();
if (pid == 0) {
cidirrest[-1] = '\0';
execlp(BACKEND, BACKEND, "--control", filename, cidir, NULL);
ohshite(_("unable to execute %s (%s)"),
_("package control information extraction"), BACKEND);
}
subproc_wait_check(pid, BACKEND " --control", 0);
/* We want to guarantee the extracted files are on the disk, so that the
* subsequent renames to the info database do not end up with old or zero
* length files in case of a system crash. As neither dpkg-deb nor tar do
* explicit fsync()s, we have to do them here.
* XXX: This could be avoided by switching to an internal tar extractor. */
dir_sync_contents(cidir);
strcpy(cidirrest,CONTROLFILE);
parsedb(cidir, pdb_parse_binary | pdb_ignorefiles | parsedb_force_flags(),
&pkg);
if (!pkg->files) {
pkg->files= nfmalloc(sizeof(struct filedetails));
pkg->files->next = NULL;
pkg->files->name = pkg->files->msdosname = pkg->files->md5sum = NULL;
}
/* Always nfmalloc. Otherwise, we may overwrite some other field (like
* md5sum). */
psize = nfmalloc(30);
sprintf(psize, "%jd", (intmax_t)stab.st_size);
pkg->files->size = psize;
if (cipaction->arg_int == act_avail) {
printf(_("Recorded info about %s from %s.\n"),
pkgbin_name(pkg, &pkg->available, pnaw_nonambig), pfilename);
pop_cleanup(ehflag_normaltidy);
return;
}
if (pkg->available.arch->type != arch_all &&
pkg->available.arch->type != arch_native)
forcibleerr(fc_architecture,
_("package architecture (%s) does not match system (%s)"),
pkg->available.arch->name, dpkg_arch_get(arch_native)->name);
for (deconpil= deconfigure;
deconpil;
deconpil= deconpiltemp) {
deconpiltemp= deconpil->next;
free(deconpil);
}
deconfigure = NULL;
clear_istobes();
if (!wanttoinstall(pkg)) {
pop_cleanup(ehflag_normaltidy);
return;
}
/* Check if anything is installed that we conflict with, or not installed
* that we need. */
pkg->clientdata->istobe= itb_installnew;
for (dsearch= pkg->available.depends; dsearch; dsearch= dsearch->next) {
switch (dsearch->type) {
case dep_conflicts:
/* Look for things we conflict with. */
check_conflict(dsearch, pkg, pfilename);
break;
case dep_breaks:
/* Look for things we break. */
check_breaks(dsearch, pkg, pfilename);
break;
case dep_provides:
/* Look for things that conflict with what we provide. */
for (psearch = dsearch->list->ed->depended.installed;
psearch;
psearch = psearch->rev_next) {
if (psearch->up->type != dep_conflicts)
continue;
check_conflict(psearch->up, pkg, pfilename);
}
break;
case dep_suggests:
case dep_recommends:
case dep_depends:
case dep_replaces:
case dep_enhances:
/* Ignore these here. */
break;
case dep_predepends:
if (!depisok(dsearch, &depprobwhy, NULL, &fixbytrigaw, true)) {
if (fixbytrigaw) {
while (fixbytrigaw->trigaw.head)
trigproc(fixbytrigaw->trigaw.head->pend);
} else {
varbuf_end_str(&depprobwhy);
fprintf(stderr, _("dpkg: regarding %s containing %s, pre-dependency problem:\n%s"),
pfilename, pkgbin_name(pkg, &pkg->available, pnaw_nonambig),
depprobwhy.buf);
if (!force_depends(dsearch->list))
ohshit(_("pre-dependency problem - not installing %.250s"),
pkgbin_name(pkg, &pkg->available, pnaw_nonambig));
warning(_("ignoring pre-dependency problem!"));
}
}
}
}
/* Look for things that conflict with us. */
for (psearch = pkg->set->depended.installed; psearch; psearch = psearch->rev_next) {
if (psearch->up->type != dep_conflicts) continue;
check_conflict(psearch->up, pkg, pfilename);
}
ensure_allinstfiles_available();
filesdbinit();
trig_file_interests_ensure();
if (pkg->status != stat_notinstalled && pkg->status != stat_configfiles) {
printf(_("Preparing to replace %s %s (using %s) ...\n"),
pkg_name(pkg, pnaw_nonambig),
versiondescribe(&pkg->installed.version,vdew_nonambig),
pfilename);
log_action("upgrade", pkg, &pkg->installed);
} else {
printf(_("Unpacking %s (from %s) ...\n"),
pkgbin_name(pkg, &pkg->available, pnaw_nonambig), pfilename);
log_action("install", pkg, &pkg->available);
}
if (f_noact) {
pop_cleanup(ehflag_normaltidy);
return;
}
/*
* OK, we're going ahead.
*/
trig_activate_packageprocessing(pkg);
strcpy(cidirrest, TRIGGERSCIFILE);
trig_parse_ci(cidir, NULL, trig_cicb_statuschange_activate, pkg, &pkg->available);
/* Read the conffiles, and copy the hashes across. */
newconffiles = NULL;
newconffileslastp = &newconffiles;
push_cleanup(cu_fileslist, ~0, NULL, 0, 0);
strcpy(cidirrest,CONFFILESFILE);
conff= fopen(cidir,"r");
if (conff) {
push_cleanup(cu_closestream, ehflag_bombout, NULL, 0, 1, (void *)conff);
while (fgets(conffilenamebuf,MAXCONFFILENAME-2,conff)) {
struct filepackages_iterator *iter;
p= conffilenamebuf + strlen(conffilenamebuf);
assert(p != conffilenamebuf);
if (p[-1] != '\n')
ohshit(_("name of conffile (starting `%.250s') is too long (>%d characters)"),
conffilenamebuf, MAXCONFFILENAME);
while (p > conffilenamebuf && isspace(p[-1])) --p;
if (p == conffilenamebuf) continue;
*p = '\0';
namenode= findnamenode(conffilenamebuf, 0);
namenode->oldhash= NEWCONFFILEFLAG;
newconff= newconff_append(&newconffileslastp, namenode);
/* Let's see if any packages have this file. If they do we
* check to see if they listed it as a conffile, and if they did
* we copy the hash across. Since (for plain file conffiles,
* which is the only kind we are supposed to have) there will
* only be one package which ‘has’ the file, this will usually
* mean we only look in the package which we're installing now.
* The ‘conffiles’ data in the status file is ignored when a
* package isn't also listed in the file ownership database as
* having that file. If several packages are listed as owning
* the file we pick one at random. */
searchconff = NULL;
iter = filepackages_iter_new(newconff->namenode);
while ((otherpkg = filepackages_iter_next(iter))) {
debug(dbg_conffdetail,
"process_archive conffile `%s' in package %s - conff ?",
newconff->namenode->name, pkg_name(otherpkg, pnaw_nonambig));
for (searchconff = otherpkg->installed.conffiles;
searchconff && strcmp(newconff->namenode->name, searchconff->name);
searchconff = searchconff->next)
debug(dbg_conffdetail,
"process_archive conffile `%s' in package %s - conff ? not `%s'",
newconff->namenode->name, pkg_name(otherpkg, pnaw_nonambig),
searchconff->name);
if (searchconff) {
debug(dbg_conff,
"process_archive conffile `%s' package=%s %s hash=%s",
newconff->namenode->name, pkg_name(otherpkg, pnaw_nonambig),
otherpkg == pkg ? "same" : "different!",
searchconff->hash);
if (otherpkg == pkg)
break;
}
}
filepackages_iter_free(iter);
if (searchconff) {
newconff->namenode->oldhash= searchconff->hash;
/* We don't copy ‘obsolete’; it's not obsolete in the new package. */
} else {
debug(dbg_conff,"process_archive conffile `%s' no package, no hash",
newconff->namenode->name);
}
newconff->namenode->flags |= fnnf_new_conff;
}
if (ferror(conff)) ohshite(_("read error in %.250s"),cidir);
pop_cleanup(ehflag_normaltidy); /* conff = fopen() */
if (fclose(conff)) ohshite(_("error closing %.250s"),cidir);
} else {
if (errno != ENOENT) ohshite(_("error trying to open %.250s"),cidir);
}
/* All the old conffiles are marked with a flag, so that we don't delete
* them if they seem to disappear completely. */
oldconffsetflags(pkg->installed.conffiles);
for (i = 0 ; i < cflict_index ; i++) {
oldconffsetflags(conflictor[i]->installed.conffiles);
}
oldversionstatus= pkg->status;
assert(oldversionstatus <= stat_installed);
debug(dbg_general,"process_archive oldversionstatus=%s",
statusstrings[oldversionstatus]);
if (oldversionstatus == stat_halfconfigured ||
oldversionstatus == stat_triggersawaited ||
oldversionstatus == stat_triggerspending ||
oldversionstatus == stat_installed) {
pkg_set_eflags(pkg, eflag_reinstreq);
pkg_set_status(pkg, stat_halfconfigured);
modstatdb_note(pkg);
push_cleanup(cu_prermupgrade, ~ehflag_normaltidy, NULL, 0, 1, (void *)pkg);
if (versioncompare(&pkg->available.version,
&pkg->installed.version) >= 0) /* Upgrade or reinstall */
maintainer_script_alternative(pkg, PRERMFILE, "pre-removal", cidir, cidirrest,
"upgrade", "failed-upgrade");
else /* Downgrade => no fallback */
maintainer_script_installed(pkg, PRERMFILE, "pre-removal", "upgrade",
versiondescribe(&pkg->available.version,
vdew_nonambig), NULL);
pkg_set_status(pkg, stat_unpacked);
oldversionstatus= stat_unpacked;
modstatdb_note(pkg);
}
for (deconpil= deconfigure; deconpil; deconpil= deconpil->next) {
struct pkginfo *removing = deconpil->pkg_removal;
if (removing)
printf(_("De-configuring %s, to allow removal of %s ...\n"),
pkg_name(deconpil->pkg, pnaw_nonambig),
pkg_name(removing, pnaw_nonambig));
else
printf(_("De-configuring %s ...\n"),
pkg_name(deconpil->pkg, pnaw_nonambig));
trig_activate_packageprocessing(deconpil->pkg);
pkg_set_status(deconpil->pkg, stat_halfconfigured);
modstatdb_note(deconpil->pkg);
/* This means that we *either* go and run postinst abort-deconfigure,
* *or* queue the package for later configure processing, depending
* on which error cleanup route gets taken. */
push_cleanup(cu_prermdeconfigure, ~ehflag_normaltidy,
ok_prermdeconfigure, ehflag_normaltidy,
3, (void*)deconpil->pkg, (void*)removing, (void*)pkg);
if (removing) {
maintainer_script_installed(deconpil->pkg, PRERMFILE, "pre-removal",
"deconfigure", "in-favour", pkg->set->name,
versiondescribe(&pkg->available.version,
vdew_nonambig),
"removing", removing->set->name,
versiondescribe(&removing->installed.version,
vdew_nonambig),
NULL);
} else {
maintainer_script_installed(deconpil->pkg, PRERMFILE, "pre-removal",
"deconfigure", "in-favour", pkg->set->name,
versiondescribe(&pkg->available.version,
vdew_nonambig),
NULL);
}
}
for (i = 0 ; i < cflict_index; i++) {
if (!(conflictor[i]->status == stat_halfconfigured ||
conflictor[i]->status == stat_triggersawaited ||
conflictor[i]->status == stat_triggerspending ||
conflictor[i]->status == stat_installed)) continue;
trig_activate_packageprocessing(conflictor[i]);
pkg_set_status(conflictor[i], stat_halfconfigured);
modstatdb_note(conflictor[i]);
push_cleanup(cu_prerminfavour, ~ehflag_normaltidy, NULL, 0,
2,(void*)conflictor[i],(void*)pkg);
maintainer_script_installed(conflictor[i], PRERMFILE, "pre-removal",
"remove", "in-favour", pkg->set->name,
versiondescribe(&pkg->available.version,
vdew_nonambig),
NULL);
pkg_set_status(conflictor[i], stat_halfinstalled);
modstatdb_note(conflictor[i]);
}
pkg_set_eflags(pkg, eflag_reinstreq);
if (pkg->status == stat_notinstalled)
pkg->installed.version= pkg->available.version;
pkg_set_status(pkg, stat_halfinstalled);
modstatdb_note(pkg);
if (oldversionstatus == stat_notinstalled) {
push_cleanup(cu_preinstverynew, ~ehflag_normaltidy, NULL, 0,
3,(void*)pkg,(void*)cidir,(void*)cidirrest);
maintainer_script_new(pkg, PREINSTFILE, "pre-installation", cidir, cidirrest,
"install", NULL);
} else if (oldversionstatus == stat_configfiles) {
push_cleanup(cu_preinstnew, ~ehflag_normaltidy, NULL, 0,
3,(void*)pkg,(void*)cidir,(void*)cidirrest);
maintainer_script_new(pkg, PREINSTFILE, "pre-installation", cidir, cidirrest,
"install", versiondescribe(&pkg->installed.version,
vdew_nonambig),
NULL);
} else {
push_cleanup(cu_preinstupgrade, ~ehflag_normaltidy, NULL, 0,
4,(void*)pkg,(void*)cidir,(void*)cidirrest,(void*)&oldversionstatus);
maintainer_script_new(pkg, PREINSTFILE, "pre-installation", cidir, cidirrest,
"upgrade", versiondescribe(&pkg->installed.version,
vdew_nonambig),
NULL);
printf(_("Unpacking replacement %.250s ...\n"),
pkgbin_name(pkg, &pkg->available, pnaw_nonambig));
}
/*
* Now we unpack the archive, backing things up as we go.
* For each file, we check to see if it already exists.
* There are several possibilities:
*
* + We are trying to install a non-directory ...
* - It doesn't exist. In this case we simply extract it.
* - It is a plain file, device, symlink, &c. We do an ‘atomic
* overwrite’ using link() and rename(), but leave a backup copy.
* Later, when we delete the backup, we remove it from any other
* packages' lists.
* - It is a directory. In this case it depends on whether we're
* trying to install a symlink or something else.
* = If we're not trying to install a symlink we move the directory
* aside and extract the node. Later, when we recursively remove
* the backed-up directory, we remove it from any other packages'
* lists.
* = If we are trying to install a symlink we do nothing - ie,
* dpkg will never replace a directory tree with a symlink. This
* is to avoid embarrassing effects such as replacing a directory
* tree with a link to a link to the original directory tree.
* + We are trying to install a directory ...
* - It doesn't exist. We create it with the appropriate modes.
* - It exists as a directory or a symlink to one. We do nothing.
* - It is a plain file or a symlink (other than to a directory).
* We move it aside and create the directory. Later, when we
* delete the backup, we remove it from any other packages' lists.
*
* Install non-dir Install symlink Install dir
* Exists not X X X
* File/node/symlink LXR LXR BXR
* Directory BXR - -
*
* X: extract file/node/link/directory
* LX: atomic overwrite leaving backup
* B: ordinary backup
* R: later remove from other packages' lists
* -: do nothing
*
* After we've done this we go through the remaining things in the
* lists of packages we're trying to remove (including the old
* version of the current package). This happens in reverse order,
* so that we process files before the directories (or symlinks-to-
* directories) containing them.
*
* + If the thing is a conffile then we leave it alone for the purge
* operation.
* + Otherwise, there are several possibilities too:
* - The listed thing does not exist. We ignore it.
* - The listed thing is a directory or a symlink to a directory.
* We delete it only if it isn't listed in any other package.
* - The listed thing is not a directory, but was part of the package
* that was upgraded, we check to make sure the files aren't the
* same ones from the old package by checking dev/inode
* - The listed thing is not a directory or a symlink to one (ie,
* it's a plain file, device, pipe, &c, or a symlink to one, or a
* dangling symlink). We delete it.
*
* The removed packages' list becomes empty (of course, the new
* version of the package we're installing will have a new list,
* which replaces the old version's list).
*
* If at any stage we remove a file from a package's list, and the
* package isn't one we're already processing, and the package's
* list becomes empty as a result, we ‘vanish’ the package. This
* means that we run its postrm with the ‘disappear’ argument, and
* put the package in the ‘not-installed’ state. If it had any
* conffiles, their hashes and ownership will have been transferred
* already, so we just ignore those and forget about them from the
* point of view of the disappearing package.
*
* NOTE THAT THE OLD POSTRM IS RUN AFTER THE NEW PREINST, since the
* files get replaced ‘as we go’.
*/
m_pipe(p1);
push_cleanup(cu_closepipe, ehflag_bombout, NULL, 0, 1, (void *)&p1[0]);
pid = subproc_fork();
if (pid == 0) {
m_dup2(p1[1],1); close(p1[0]); close(p1[1]);
execlp(BACKEND, BACKEND, "--fsys-tarfile", filename, NULL);
ohshite(_("unable to execute %s (%s)"),
_("package filesystem archive extraction"), BACKEND);
}
close(p1[1]);
p1[1] = -1;
newfileslist = NULL;
tc.newfilesp = &newfileslist;
push_cleanup(cu_fileslist, ~0, NULL, 0, 0);
tc.pkg= pkg;
tc.backendpipe= p1[0];
r = tar_extractor(&tc, &tf);
if (r) {
if (errno) {
ohshite(_("error reading dpkg-deb tar output"));
} else {
ohshit(_("corrupted filesystem tarfile - corrupted package archive"));
}
}
fd_skip(p1[0], -1, _("dpkg-deb: zap possible trailing zeros"));
close(p1[0]);
p1[0] = -1;
subproc_wait_check(pid, BACKEND " --fsys-tarfile", PROCPIPE);
tar_deferred_extract(newfileslist, pkg);
if (oldversionstatus == stat_halfinstalled || oldversionstatus == stat_unpacked) {
/* Packages that were in ‘installed’ and ‘postinstfailed’ have been
* reduced to ‘unpacked’ by now, by the running of the prerm script. */
pkg_set_status(pkg, stat_halfinstalled);
modstatdb_note(pkg);
push_cleanup(cu_postrmupgrade, ~ehflag_normaltidy, NULL, 0, 1, (void *)pkg);
maintainer_script_alternative(pkg, POSTRMFILE, "post-removal", cidir, cidirrest,
"upgrade", "failed-upgrade");
}
/* If anything goes wrong while tidying up it's a bit late to do
* anything about it. However, we don't install the new status
* info yet, so that a future dpkg installation will put everything
* right (we hope).
*
* If something does go wrong later the ‘conflictor’ package will be
* left in the ‘removal_failed’ state. Removing or installing it
* will be impossible if it was required because of the conflict with
* the package we're installing now and (presumably) the dependency
* by other packages. This means that the files it contains in
* common with this package will hang around until we successfully
* get this package installed, after which point we can trust the
* conflicting package's file list, which will have been updated to
* remove any files in this package. */
push_checkpoint(~ehflag_bombout, ehflag_normaltidy);
/* Now we delete all the files that were in the old version of
* the package only, except (old or new) conffiles, which we leave
* alone. */
reversefilelist_init(&rlistit,pkg->clientdata->files);
while ((namenode= reversefilelist_next(&rlistit))) {
struct filenamenode *usenode;
if ((namenode->flags & fnnf_new_conff) ||
(namenode->flags & fnnf_new_inarchive))
continue;
usenode = namenodetouse(namenode, pkg, &pkg->installed);
trig_file_activate(usenode, pkg);
varbuf_trunc(&fnamevb, fnameidlu);
varbuf_add_str(&fnamevb, usenode->name);
varbuf_end_str(&fnamevb);
if (!stat(namenode->name,&stab) && S_ISDIR(stab.st_mode)) {
debug(dbg_eachfiledetail, "process_archive: %s is a directory",
namenode->name);
if (dir_is_used_by_others(namenode, pkg))
continue;
}
if (lstat(fnamevb.buf, &oldfs)) {
if (!(errno == ENOENT || errno == ELOOP || errno == ENOTDIR))
warning(_("could not stat old file '%.250s' so not deleting it: %s"),
fnamevb.buf, strerror(errno));
continue;
}
if (S_ISDIR(oldfs.st_mode)) {
if (rmdir(fnamevb.buf)) {
warning(_("unable to delete old directory '%.250s': %s"),
namenode->name, strerror(errno));
} else if ((namenode->flags & fnnf_old_conff)) {
warning(_("old conffile '%.250s' was an empty directory "
"(and has now been deleted)"), namenode->name);
}
} else {
struct fileinlist *sameas = NULL;
static struct stat empty_stat;
struct varbuf cfilename = VARBUF_INIT;
/*
* Ok, it's an old file, but is it really not in the new package?
* It might be known by a different name because of symlinks.
*
* We need to check to make sure, so we stat the file, then compare
* it to the new list. If we find a dev/inode match, we assume they
* are the same file, and leave it alone. NOTE: we don't check in
* other packages for sanity reasons (we don't want to stat _all_
* the files on the system).
*
* We run down the list of _new_ files in this package. This keeps
* the process a little leaner. We are only worried about new ones
* since ones that stayed the same don't really apply here.
*/
/* If we can't stat the old or new file, or it's a directory,
* we leave it up to the normal code. */
debug(dbg_eachfile, "process_archive: checking %s for same files on "
"upgrade/downgrade", fnamevb.buf);
for (cfile= newfileslist; cfile; cfile= cfile->next) {
/* If the file has been filtered then treat it as if it didn't exist
* on the file system. */
if (cfile->namenode->flags & fnnf_filtered)
continue;
if (!cfile->namenode->filestat) {
struct stat tmp_stat;
varbuf_reset(&cfilename);
varbuf_add_str(&cfilename, instdir);
varbuf_add_char(&cfilename, '/');
varbuf_add_str(&cfilename, cfile->namenode->name);
varbuf_end_str(&cfilename);
if (lstat(cfilename.buf, &tmp_stat) == 0) {
cfile->namenode->filestat = nfmalloc(sizeof(struct stat));
memcpy(cfile->namenode->filestat, &tmp_stat, sizeof(struct stat));
} else {
if (!(errno == ENOENT || errno == ELOOP || errno == ENOTDIR))
ohshite(_("unable to stat other new file `%.250s'"),
cfile->namenode->name);
cfile->namenode->filestat = &empty_stat;
continue;
}
}
if (cfile->namenode->filestat == &empty_stat)
continue;
if (oldfs.st_dev == cfile->namenode->filestat->st_dev &&
oldfs.st_ino == cfile->namenode->filestat->st_ino) {
if (sameas)
warning(_("old file '%.250s' is the same as several new files! "
"(both '%.250s' and '%.250s')"), fnamevb.buf,
sameas->namenode->name, cfile->namenode->name);
sameas= cfile;
debug(dbg_eachfile, "process_archive: not removing %s,"
" since it matches %s", fnamevb.buf, cfile->namenode->name);
}
}
varbuf_destroy(&cfilename);
if ((namenode->flags & fnnf_old_conff)) {
if (sameas) {
if (sameas->namenode->flags & fnnf_new_conff) {
if (!strcmp(sameas->namenode->oldhash, NEWCONFFILEFLAG)) {
sameas->namenode->oldhash= namenode->oldhash;
debug(dbg_eachfile, "process_archive: old conff %s"
" is same as new conff %s, copying hash",
namenode->name, sameas->namenode->name);
} else {
debug(dbg_eachfile, "process_archive: old conff %s"
" is same as new conff %s but latter already has hash",
namenode->name, sameas->namenode->name);
}
}
} else {
debug(dbg_eachfile, "process_archive: old conff %s"
" is disappearing", namenode->name);
namenode->flags |= fnnf_obs_conff;
newconff_append(&newconffileslastp, namenode);
addfiletolist(&tc, namenode);
}
continue;
}
if (sameas)
continue;
if (secure_unlink_statted(fnamevb.buf, &oldfs)) {
warning(_("unable to securely remove old file '%.250s': %s"),
namenode->name, strerror(errno));
}
} /* !S_ISDIR */
}
/* OK, now we can write the updated files-in-this package list,
* since we've done away (hopefully) with all the old junk. */
write_filelist_except(pkg, &pkg->available, newfileslist, 0);
/* Trigger interests may have changed.
* Firstly we go through the old list of interests deleting them.
* Then we go through the new list adding them. */
strcpy(cidirrest, TRIGGERSCIFILE);
trig_parse_ci(pkgadminfile(pkg, &pkg->installed, TRIGGERSCIFILE),
trig_cicb_interest_delete, NULL, pkg, &pkg->installed);
trig_parse_ci(cidir, trig_cicb_interest_add, NULL, pkg, &pkg->available);
trig_file_interests_save();
/* We also install the new maintainer scripts, and any other
* cruft that may have come along with the package. First
* we go through the existing scripts replacing or removing
* them as appropriate; then we go through the new scripts
* (any that are left) and install them. */
debug(dbg_general, "process_archive updating info directory");
pkg_infodb_update(pkg, cidir, cidirrest);
/*
* Update the status database.
*
* This involves copying each field across from the ‘available’
* to the ‘installed’ half of the pkg structure.
* For some of the fields we have to do a complicated construction
* operation; for others we can just copy the value.
* We tackle the fields in the order they appear, so that
* we don't miss any out :-).
* At least we don't have to copy any strings that are referred
* to, because these are never modified and never freed.
*/
/* The dependencies are the most difficult. We have to build
* a whole new forward dependency tree. At least the reverse
* links (linking our deppossi's into the reverse chains)
* can be done by copy_dependency_links. */
newdeplist = NULL;
newdeplistlastp = &newdeplist;
for (dep= pkg->available.depends; dep; dep= dep->next) {
newdep= nfmalloc(sizeof(struct dependency));
newdep->up= pkg;
newdep->next = NULL;
newdep->list = NULL;
newpossilastp = &newdep->list;
for (possi= dep->list; possi; possi= possi->next) {
newpossi= nfmalloc(sizeof(struct deppossi));
newpossi->up= newdep;
newpossi->ed= possi->ed;
newpossi->next = NULL;
newpossi->rev_next = newpossi->rev_prev = NULL;
newpossi->arch_is_implicit = possi->arch_is_implicit;
newpossi->arch = possi->arch;
newpossi->verrel= possi->verrel;
if (possi->verrel != dvr_none)
newpossi->version= possi->version;
else
blankversion(&newpossi->version);
newpossi->cyclebreak = false;
*newpossilastp= newpossi;
newpossilastp= &newpossi->next;
}
newdep->type= dep->type;
*newdeplistlastp= newdep;
newdeplistlastp= &newdep->next;
}
/* Right, now we've replicated the forward tree, we
* get copy_dependency_links to remove all the old dependency
* structures from the reverse links and add the new dependency
* structures in instead. It also copies the new dependency
* structure pointer for this package into the right field. */
copy_dependency_links(pkg,&pkg->installed.depends,newdeplist,0);
/* We copy the text fields. */
pkg->installed.essential= pkg->available.essential;
pkg->installed.multiarch = pkg->available.multiarch;
pkg->installed.description= pkg->available.description;
pkg->installed.maintainer= pkg->available.maintainer;
pkg->installed.source= pkg->available.source;
pkg->installed.arch = pkg->available.arch;
pkg->installed.installedsize= pkg->available.installedsize;
pkg->installed.version= pkg->available.version;
pkg->installed.origin = pkg->available.origin;
pkg->installed.bugs = pkg->available.bugs;
/* We have to generate our own conffiles structure. */
pkg->installed.conffiles = NULL;
iconffileslastp = &pkg->installed.conffiles;
for (cfile= newconffiles; cfile; cfile= cfile->next) {
newiconff= nfmalloc(sizeof(struct conffile));
newiconff->next = NULL;
newiconff->name= nfstrsave(cfile->namenode->name);
newiconff->hash= nfstrsave(cfile->namenode->oldhash);
newiconff->obsolete= !!(cfile->namenode->flags & fnnf_obs_conff);
*iconffileslastp= newiconff;
iconffileslastp= &newiconff->next;
}
/* We can just copy the arbitrary fields list, because it is
* never even rearranged. Phew! */
pkg->installed.arbs= pkg->available.arbs;
/* Check for disappearing packages:
* We go through all the packages on the system looking for ones
* whose files are entirely part of the one we've just unpacked
* (and which actually *have* some files!).
*
* Any that we find are removed - we run the postrm with ‘disappear’
* as an argument, and remove their info/... files and status info.
* Conffiles are ignored (the new package had better do something
* with them!). */
it = pkg_db_iter_new();
while ((otherpkg = pkg_db_iter_next_pkg(it)) != NULL) {
ensure_package_clientdata(otherpkg);
if (otherpkg == pkg ||
otherpkg->status == stat_notinstalled ||
otherpkg->status == stat_configfiles ||
otherpkg->clientdata->istobe == itb_remove ||
!otherpkg->clientdata->files) continue;
debug(dbg_veryverbose, "process_archive checking disappearance %s",
pkg_name(otherpkg, pnaw_nonambig));
assert(otherpkg->clientdata->istobe == itb_normal ||
otherpkg->clientdata->istobe == itb_deconfigure);
for (cfile= otherpkg->clientdata->files;
cfile && !strcmp(cfile->namenode->name,"/.");
cfile= cfile->next);
if (!cfile) {
debug(dbg_stupidlyverbose, "process_archive no non-root, no disappear");
continue;
}
for (cfile= otherpkg->clientdata->files;
cfile && !filesavespackage(cfile,otherpkg,pkg);
cfile= cfile->next);
if (cfile) continue;
/* So dependency things will give right answers ... */
otherpkg->clientdata->istobe= itb_remove;
debug(dbg_veryverbose, "process_archive disappear checking dependencies");
for (pdep = otherpkg->set->depended.installed;
pdep;
pdep = pdep->rev_next) {
if (pdep->up->type != dep_depends && pdep->up->type != dep_predepends &&
pdep->up->type != dep_recommends) continue;
if (depisok(pdep->up, &depprobwhy, NULL, NULL, false))
continue;
varbuf_end_str(&depprobwhy);
debug(dbg_veryverbose,"process_archive cannot disappear: %s",depprobwhy.buf);
break;
}
if (!pdep) {
/* If we haven't found a reason not to yet, let's look some more. */
for (providecheck= otherpkg->installed.depends;
providecheck;
providecheck= providecheck->next) {
if (providecheck->type != dep_provides) continue;
for (pdep = providecheck->list->ed->depended.installed;
pdep;
pdep = pdep->rev_next) {
if (pdep->up->type != dep_depends && pdep->up->type != dep_predepends &&
pdep->up->type != dep_recommends)
continue;
if (depisok(pdep->up, &depprobwhy, NULL, NULL, false))
continue;
varbuf_end_str(&depprobwhy);
debug(dbg_veryverbose,"process_archive cannot disappear (provides %s): %s",
providecheck->list->ed->name, depprobwhy.buf);
goto break_from_both_loops_at_once;
}
}
break_from_both_loops_at_once:;
}
otherpkg->clientdata->istobe= itb_normal;
if (pdep) continue;
/* No, we're disappearing it. This is the wrong time to go and
* run maintainer scripts and things, as we can't back out. But
* what can we do ? It has to be run this late. */
pkg_disappear(otherpkg, pkg);
} /* while (otherpkg= ... */
pkg_db_iter_free(it);
/* Delete files from any other packages' lists.
* We have to do this before we claim this package is in any
* sane kind of state, as otherwise we might delete by mistake
* a file that we overwrote, when we remove the package which
* had the version we overwrote. To prevent this we make
* sure that we don't claim this package is OK until we
* have claimed ‘ownership’ of all its files. */
for (cfile= newfileslist; cfile; cfile= cfile->next) {
struct filepackages_iterator *iter;
struct pkgset *divpkgset;
if (!(cfile->namenode->flags & fnnf_elide_other_lists)) continue;
if (cfile->namenode->divert && cfile->namenode->divert->useinstead) {
divpkgset = cfile->namenode->divert->pkgset;
if (divpkgset == pkg->set) {
debug(dbg_eachfile,
"process_archive not overwriting any `%s' (overriding, `%s')",
cfile->namenode->name, cfile->namenode->divert->useinstead->name);
continue;
} else {
debug(dbg_eachfile,
"process_archive looking for overwriting `%s' (overridden by %s)",
cfile->namenode->name, divpkgset ? divpkgset->name : "<local>");
}
} else {
divpkgset = NULL;
debug(dbg_eachfile, "process_archive looking for overwriting `%s'",
cfile->namenode->name);
}
iter = filepackages_iter_new(cfile->namenode);
while ((otherpkg = filepackages_iter_next(iter))) {
debug(dbg_eachfiledetail, "process_archive ... found in %s",
pkg_name(otherpkg, pnaw_nonambig));
/* If !fileslistvalid then it's one of the disappeared packages above
* and we don't bother with it here, clearly. */
if (otherpkg == pkg || !otherpkg->clientdata->fileslistvalid)
continue;
if (otherpkg->set == divpkgset) {
debug(dbg_eachfiledetail, "process_archive ... diverted, skipping");
continue;
}
/* Found one. We delete remove the list entry for this file,
* (and any others in the same package) and then mark the package
* as requiring a reread. */
write_filelist_except(otherpkg, &otherpkg->installed,
otherpkg->clientdata->files, fnnf_elide_other_lists);
ensure_package_clientdata(otherpkg);
debug(dbg_veryverbose, "process_archive overwrote from %s",
pkg_name(otherpkg, pnaw_nonambig));
}
filepackages_iter_free(iter);
}
/* Right, the package we've unpacked is now in a reasonable state.
* The only thing that we have left to do with it is remove
* backup files, and we can leave the user to fix that if and when
* it happens (we leave the reinstall required flag, of course). */
pkg_set_status(pkg, stat_unpacked);
modstatdb_note(pkg);
/* Now we delete all the backup files that we made when
* extracting the archive - except for files listed as conffiles
* in the new package.
* This time we count it as an error if something goes wrong.
*
* Note that we don't ever delete things that were in the old
* package as a conffile and don't appear at all in the new.
* They stay recorded as obsolete conffiles and will eventually
* (if not taken over by another package) be forgotten. */
for (cfile= newfileslist; cfile; cfile= cfile->next) {
if (cfile->namenode->flags & fnnf_new_conff) continue;
varbuf_trunc(&fnametmpvb, fnameidlu);
varbuf_add_str(&fnametmpvb,
namenodetouse(cfile->namenode, pkg, &pkg->installed)->name);
varbuf_add_str(&fnametmpvb, DPKGTEMPEXT);
varbuf_end_str(&fnametmpvb);
ensure_pathname_nonexisting(fnametmpvb.buf);
}
/* OK, we're now fully done with the main package.
* This is quite a nice state, so we don't unwind past here. */
pkg_reset_eflags(pkg);
modstatdb_note(pkg);
push_checkpoint(~ehflag_bombout, ehflag_normaltidy);
/* Only the removal of the conflictor left to do.
* The files list for the conflictor is still a little inconsistent in-core,
* as we have not yet updated the filename->packages mappings; however,
* the package->filenames mapping is. */
for (i = 0 ; i < cflict_index ; i++) {
/* We need to have the most up-to-date info about which files are
* what ... */
ensure_allinstfiles_available();
removal_bulk(conflictor[i]);
}
if (cipaction->arg_int == act_install)
add_to_queue(pkg);
}
