static void info_spew(const char *debar, const char *directory,
const char *const *argv) {
const char *component;
struct varbuf controlfile = VARBUF_INIT;
int fd;
int re= 0;
while ((component = *argv++) != NULL) {
varbufreset(&controlfile);
varbufaddstr(&controlfile, directory);
varbufaddc(&controlfile, '/');
varbufaddstr(&controlfile, component);
varbufaddc(&controlfile, '\0');
fd = open(controlfile.buf, O_RDONLY);
if (fd >= 0) {
fd_fd_copy(fd, 1, -1, _("control file '%s'"), controlfile.buf);
close(fd);
} else if (errno == ENOENT) {
fprintf(stderr,
_("dpkg-deb: `%.255s' contains no control component `%.255s'\n"),
debar, component);
re++;
} else {
ohshite(_("open component `%.255s' (in %.255s) failed in an unexpected way"),
component, directory);
}
}
varbuf_destroy(&controlfile);
if (re > 0)
ohshit(P_("%d requested control component is missing",
"%d requested control components are missing", re), re);
}
void
trigproc(struct pkginfo *pkg)
{
static struct varbuf namesarg;
struct trigpend *tp;
struct pkginfo *gaveup;
debug(dbg_triggers, "trigproc %s", pkg->name);
if (pkg->clientdata->trigprocdeferred)
pkg->clientdata->trigprocdeferred->pkg = NULL;
pkg->clientdata->trigprocdeferred = NULL;
if (pkg->trigpend_head) {
assert(pkg->status == stat_triggerspending ||
pkg->status == stat_triggersawaited);
gaveup = check_trigger_cycle(pkg);
if (gaveup == pkg)
return;
printf(_("Processing triggers for %s ...\n"), pkg->name);
log_action("trigproc", pkg);
varbufreset(&namesarg);
for (tp = pkg->trigpend_head; tp; tp = tp->next) {
varbufaddc(&namesarg, ' ');
varbufaddstr(&namesarg, tp->name);
}
varbufaddc(&namesarg, 0);
/* Setting the status to halfconfigured
* causes modstatdb_note to clear pending triggers.
*/
pkg->status = stat_halfconfigured;
modstatdb_note(pkg);
if (!f_noact) {
sincenothing = 0;
maintainer_script_postinst(pkg, "triggered",
namesarg.buf + 1, NULL);
}
/* This is to cope if the package triggers itself: */
pkg->status = pkg->trigaw.head ? stat_triggersawaited :
pkg->trigpend_head ? stat_triggerspending :
stat_installed;
post_postinst_tasks_core(pkg);
} else {
/* In other branch is done by modstatdb_note. */
trig_clear_awaiters(pkg);
}
}
const char *pkgadminfile(struct pkginfo *pkg, const char *whichfile) {
static struct varbuf vb;
varbufreset(&vb);
varbufaddstr(&vb,admindir);
varbufaddstr(&vb,"/" INFODIR);
varbufaddstr(&vb,pkg->name);
varbufaddc(&vb,'.');
varbufaddstr(&vb,whichfile);
varbufaddc(&vb,0);
return vb.buf;
}
static void
save(diversion *diversions)
{
diversion *d;
static struct varbuf filename;
static struct varbuf new_filename;
static struct varbuf old_filename;
FILE *new_file;
if (testmode) return;
varbufreset(&new_filename);
varbufaddstr(&new_filename, admindir);
varbufaddstr(&new_filename, "/" DIVERSIONSFILE "-new");
varbufaddc(&new_filename, 0);
new_file = fopen(new_filename.buf, "w");
if (!new_file)
ohshite(_("create diversions-new"));
chmod(new_filename.buf, 0644);
for (d = diversions; d; d = d->next)
{
if (fprintf(new_file, "%s\n%s\n%s\n",
d->contest,
d->altname,
d->package) < 0)
ohshite(_("write diversions-new"));
}
if (fclose(new_file) == EOF)
ohshite(_("close diversions-new"));
varbufreset(&old_filename);
varbufaddstr(&old_filename, admindir);
varbufaddstr(&old_filename, "/" DIVERSIONSFILE "-old");
varbufaddc(&old_filename, 0);
if (unlink(old_filename.buf) != 0 && errno != ENOENT)
ohshite(_("remove old diversions-old"));
varbufreset(&filename);
varbufaddstr(&filename, admindir);
varbufaddstr(&filename, "/" DIVERSIONSFILE);
varbufaddc(&filename, 0);
if (link(filename.buf, old_filename.buf) != 0 && errno != ENOENT)
ohshite(_("create new diversions-old"));
if (rename(new_filename.buf, filename.buf) != 0)
ohshite(_("install new diversions"));
}
static void
infol(const char *file, const char *divertto, const char *package,
struct varbuf *ret)
{
if (package) {
if (strcmp(package, ":") == 0)
varbufaddstr(ret, "local ");
}
else
varbufaddstr(ret, "any ");
varbufaddstr(ret, "diversion of ");
varbufaddstr(ret, file);
if (divertto) {
varbufaddstr(ret, " to ");
varbufaddstr(ret, divertto);
}
if (package && strcmp(package, ":") != 0) {
varbufaddstr(ret, " by ");
varbufaddstr(ret, package);
}
varbufaddc(ret, 0);
}
void varbufversion
(struct varbuf *vb,
const struct versionrevision *version,
enum versiondisplayepochwhen vdew)
{
switch (vdew) {
case vdew_never:
break;
case vdew_nonambig:
if (!version->epoch &&
(!version->version || !strchr(version->version,':')) &&
(!version->revision || !strchr(version->revision,':'))) break;
/* Fall through. */
case vdew_always:
varbufprintf(vb,"%lu:",version->epoch);
break;
default:
internerr("unknown versiondisplayepochwhen '%d'", vdew);
}
if (version->version) varbufaddstr(vb,version->version);
if (version->revision && *version->revision) {
varbufaddc(vb,'-');
varbufaddstr(vb,version->revision);
}
}
void setupfnamevbs(const char *filename) {
varbuf_trunc(&fnamevb, fnameidlu);
varbufaddstr(&fnamevb,filename);
varbufaddc(&fnamevb,0);
varbuf_trunc(&fnametmpvb, fnameidlu);
varbufaddstr(&fnametmpvb,filename);
varbufaddstr(&fnametmpvb,DPKGTEMPEXT);
varbufaddc(&fnametmpvb,0);
varbuf_trunc(&fnamenewvb, fnameidlu);
varbufaddstr(&fnamenewvb,filename);
varbufaddstr(&fnamenewvb,DPKGNEWEXT);
varbufaddc(&fnamenewvb,0);
debug(dbg_eachfiledetail, "setupvnamevbs main=`%s' tmp=`%s' new=`%s'",
fnamevb.buf, fnametmpvb.buf, fnamenewvb.buf);
}
void check_breaks(struct dependency *dep, struct pkginfo *pkg,
const char *pfilename) {
struct pkginfo *fixbydeconf;
struct varbuf why = VARBUF_INIT;
int ok;
fixbydeconf = NULL;
if (depisok(dep, &why, &fixbydeconf, false)) {
varbuf_destroy(&why);
return;
}
varbufaddc(&why, 0);
if (fixbydeconf && f_autodeconf) {
char action[512];
ensure_package_clientdata(fixbydeconf);
assert(fixbydeconf->clientdata->istobe == itb_normal);
sprintf(action, _("installation of %.250s"), pkg->name);
fprintf(stderr, _("dpkg: considering deconfiguration of %s,"
" which would be broken by %s ...\n"),
fixbydeconf->name, action);
ok= try_deconfigure_can(force_breaks, fixbydeconf, dep->list,
action, NULL, why.buf);
if (ok == 1) {
fprintf(stderr, _("dpkg: yes, will deconfigure %s (broken by %s).\n"),
fixbydeconf->name, pkg->name);
}
} else {
fprintf(stderr, _("dpkg: regarding %s containing %s:\n%s"),
pfilename, pkg->name, why.buf);
ok= 0;
}
varbuf_destroy(&why);
if (ok > 0) return;
if (force_breaks(dep->list)) {
warning(_("ignoring breakage, may proceed anyway!"));
return;
}
if (fixbydeconf && !f_autodeconf) {
ohshit(_("installing %.250s would break %.250s, and\n"
" deconfiguration is not permitted (--auto-deconfigure might help)"),
pkg->name, fixbydeconf->name);
} else {
ohshit(_("installing %.250s would break existing software"),
pkg->name);
}
}
/**
* Cycle breaking works recursively down the package dependency tree.
*
* ‘sofar’ is the list of packages we've descended down already - if we
* encounter any of its packages again in a dependency we have found a cycle.
*/
static bool
findbreakcyclerecursive(struct pkginfo *pkg, struct cyclesofarlink *sofar)
{
struct cyclesofarlink thislink, *sol;
struct dependency *dep;
struct deppossi *possi, *providelink;
struct pkginfo *provider;
if (pkg->clientdata->color == black)
return false;
pkg->clientdata->color = gray;
if (f_debug & dbg_depcondetail) {
struct varbuf str_pkgs = VARBUF_INIT;
for (sol = sofar; sol; sol = sol->prev) {
varbufaddstr(&str_pkgs, " <- ");
varbufaddstr(&str_pkgs, sol->pkg->name);
}
varbufaddc(&str_pkgs, '\0');
debug(dbg_depcondetail, "findbreakcyclerecursive %s %s", pkg->name,
str_pkgs.buf);
varbuf_destroy(&str_pkgs);
}
thislink.pkg= pkg;
thislink.prev = sofar;
thislink.possi = NULL;
for (dep= pkg->installed.depends; dep; dep= dep->next) {
if (dep->type != dep_depends && dep->type != dep_predepends) continue;
for (possi= dep->list; possi; possi= possi->next) {
/* Don't find the same cycles again. */
if (possi->cyclebreak) continue;
thislink.possi= possi;
if (foundcyclebroken(&thislink, sofar, possi->ed,possi))
return true;
/* Right, now we try all the providers ... */
for (providelink= possi->ed->installed.depended;
providelink;
providelink = providelink->rev_next) {
if (providelink->up->type != dep_provides) continue;
provider= providelink->up->up;
if (provider->clientdata->istobe == itb_normal) continue;
/* We don't break things at ‘provides’ links, so ‘possi’ is
* still the one we use. */
if (foundcyclebroken(&thislink, sofar, provider, possi))
return true;
}
}
}
/* Nope, we didn't find a cycle to break. */
pkg->clientdata->color = black;
return false;
}
const char *versiondescribe
(const struct versionrevision *version,
enum versiondisplayepochwhen vdew)
{
static struct varbuf bufs[10];
static int bufnum=0;
struct varbuf *vb;
if (!informativeversion(version)) return _("<none>");
vb= &bufs[bufnum]; bufnum++; if (bufnum == 10) bufnum= 0;
varbufreset(vb);
varbufversion(vb,version,vdew);
varbufaddc(vb,0);
return vb->buf;
}
static bool
linktosameexistingdir(const struct tar_entry *ti, const char *fname,
struct varbuf *symlinkfn)
{
struct stat oldstab, newstab;
int statr;
const char *lastslash;
statr= stat(fname, &oldstab);
if (statr) {
if (!(errno == ENOENT || errno == ELOOP || errno == ENOTDIR))
ohshite(_("failed to stat (dereference) existing symlink `%.250s'"),
fname);
return false;
}
if (!S_ISDIR(oldstab.st_mode))
return false;
/* But is it to the same dir? */
varbufreset(symlinkfn);
if (ti->linkname[0] == '/') {
varbufaddstr(symlinkfn, instdir);
} else {
lastslash= strrchr(fname, '/');
assert(lastslash);
varbufaddbuf(symlinkfn, fname, (lastslash - fname) + 1);
}
varbufaddstr(symlinkfn, ti->linkname);
varbufaddc(symlinkfn, 0);
statr= stat(symlinkfn->buf, &newstab);
if (statr) {
if (!(errno == ENOENT || errno == ELOOP || errno == ENOTDIR))
ohshite(_("failed to stat (dereference) proposed new symlink target"
" `%.250s' for symlink `%.250s'"), symlinkfn->buf, fname);
return false;
}
if (!S_ISDIR(newstab.st_mode))
return false;
if (newstab.st_dev != oldstab.st_dev ||
newstab.st_ino != oldstab.st_ino)
return false;
return true;
}
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);
}
static diversion *
read_diversions()
{
diversion *diversions = NULL;
char linebuf[MAXDIVERTFILENAME];
static struct varbuf vb;
varbufreset(&vb);
varbufaddstr(&vb, admindir);
varbufaddstr(&vb, "/" DIVERSIONSFILE);
varbufaddc(&vb, 0);
FILE *file = fopen(vb.buf, "r");
if (!file)
ohshite(_("failed to open diversions file"));
for (;;)
{
diversion *next = nfmalloc(sizeof(diversion));
if (fgets_checked(linebuf, sizeof(linebuf), file, vb.buf) < 0)
break;
chomp(linebuf);
next->contest = strdup(linebuf);
fgets_must(linebuf, sizeof(linebuf), file, vb.buf);
chomp(linebuf);
next->altname = strdup(linebuf);
fgets_must(linebuf, sizeof(linebuf), file, vb.buf);
chomp(linebuf);
next->package = strdup(linebuf);
next->next = diversions;
diversions = next;
}
fclose(file);
return invert_diversions_list(diversions);
}
void describedepcon(struct varbuf *addto, struct dependency *dep) {
const char *fmt;
struct varbuf depstr = VARBUF_INIT;
switch (dep->type) {
case dep_depends:
fmt = _("%s depends on %s");
break;
case dep_predepends:
fmt = _("%s pre-depends on %s");
break;
case dep_recommends:
fmt = _("%s recommends %s");
break;
case dep_suggests:
fmt = _("%s suggests %s");
break;
case dep_breaks:
fmt = _("%s breaks %s");
break;
case dep_conflicts:
fmt = _("%s conflicts with %s");
break;
case dep_enhances:
fmt = _("%s enhances %s");
break;
default:
internerr("unknown deptype '%d'", dep->type);
}
varbufdependency(&depstr, dep);
varbufaddc(&depstr, 0);
varbufprintf(addto, fmt, dep->up->name, depstr.buf);
varbuf_destroy(&depstr);
}
int
tarobject(void *ctx, struct tar_entry *ti)
{
static struct varbuf conffderefn, hardlinkfn, symlinkfn;
static int fd;
const char *usename;
struct filenamenode *usenode;
struct filenamenode *linknode;
struct conffile *conff;
struct tarcontext *tc = ctx;
bool existingdirectory, keepexisting;
int statr;
ssize_t r;
struct stat stab, stabtmp;
char databuf[TARBLKSZ];
struct file_stat *st;
struct fileinlist *nifd, **oldnifd;
struct pkginfo *divpkg, *otherpkg;
ensureobstackinit();
/* Append to list of files.
* The trailing ‘/’ put on the end of names in tarfiles has already
* been stripped by tar_extractor(). */
oldnifd= tc->newfilesp;
nifd= addfiletolist(tc, findnamenode(ti->name, 0));
nifd->namenode->flags |= fnnf_new_inarchive;
debug(dbg_eachfile,
"tarobject ti->name='%s' mode=%lo owner=%u.%u type=%d(%c)"
" ti->linkname='%s' namenode='%s' flags=%o instead='%s'",
ti->name, (long)ti->stat.mode,
(unsigned)ti->stat.uid, (unsigned)ti->stat.gid,
ti->type,
ti->type >= '0' && ti->type <= '6' ? "-hlcbdp"[ti->type - '0'] : '?',
ti->linkname,
nifd->namenode->name, nifd->namenode->flags,
nifd->namenode->divert && nifd->namenode->divert->useinstead
? nifd->namenode->divert->useinstead->name : "<none>");
if (nifd->namenode->divert && nifd->namenode->divert->camefrom) {
divpkg= nifd->namenode->divert->pkg;
if (divpkg) {
forcibleerr(fc_overwritediverted,
_("trying to overwrite `%.250s', which is the "
"diverted version of `%.250s' (package: %.100s)"),
nifd->namenode->name, nifd->namenode->divert->camefrom->name,
divpkg->name);
} else {
forcibleerr(fc_overwritediverted,
_("trying to overwrite `%.250s', which is the "
"diverted version of `%.250s'"),
nifd->namenode->name, nifd->namenode->divert->camefrom->name);
}
}
if (nifd->namenode->statoverride)
st = nifd->namenode->statoverride;
else
st = &ti->stat;
usenode = namenodetouse(nifd->namenode, tc->pkg);
usename = usenode->name + 1; /* Skip the leading '/'. */
trig_file_activate(usenode, tc->pkg);
if (nifd->namenode->flags & fnnf_new_conff) {
/* If it's a conffile we have to extract it next to the installed
* version (i.e. we do the usual link-following). */
if (conffderef(tc->pkg, &conffderefn, usename))
usename= conffderefn.buf;
debug(dbg_conff,"tarobject fnnf_new_conff deref=`%s'",usename);
}
setupfnamevbs(usename);
statr= lstat(fnamevb.buf,&stab);
if (statr) {
/* The lstat failed. */
if (errno != ENOENT && errno != ENOTDIR)
ohshite(_("unable to stat `%.255s' (which I was about to install)"),
ti->name);
/* OK, so it doesn't exist.
* However, it's possible that we were in the middle of some other
* backup/restore operation and were rudely interrupted.
* So, we see if we have .dpkg-tmp, and if so we restore it. */
if (rename(fnametmpvb.buf,fnamevb.buf)) {
if (errno != ENOENT && errno != ENOTDIR)
ohshite(_("unable to clean up mess surrounding `%.255s' before "
"installing another version"), ti->name);
debug(dbg_eachfiledetail,"tarobject nonexistent");
} else {
debug(dbg_eachfiledetail,"tarobject restored tmp to main");
statr= lstat(fnamevb.buf,&stab);
if (statr) ohshite(_("unable to stat restored `%.255s' before installing"
" another version"), ti->name);
}
} else {
debug(dbg_eachfiledetail,"tarobject already exists");
}
/* Check to see if it's a directory or link to one and we don't need to
* do anything. This has to be done now so that we don't die due to
* a file overwriting conflict. */
existingdirectory = false;
switch (ti->type) {
case tar_filetype_symlink:
/* If it's already an existing directory, do nothing. */
if (!statr && S_ISDIR(stab.st_mode)) {
debug(dbg_eachfiledetail, "tarobject symlink exists as directory");
existingdirectory = true;
} else if (!statr && S_ISLNK(stab.st_mode)) {
if (linktosameexistingdir(ti, fnamevb.buf, &symlinkfn))
existingdirectory = true;
}
break;
case tar_filetype_dir:
/* If it's already an existing directory, do nothing. */
if (!stat(fnamevb.buf,&stabtmp) && S_ISDIR(stabtmp.st_mode)) {
debug(dbg_eachfiledetail, "tarobject directory exists");
existingdirectory = true;
}
break;
case tar_filetype_file:
case tar_filetype_chardev:
case tar_filetype_blockdev:
case tar_filetype_fifo:
case tar_filetype_hardlink:
break;
default:
ohshit(_("archive contained object `%.255s' of unknown type 0x%x"),
ti->name, ti->type);
}
keepexisting = false;
if (!existingdirectory) {
struct filepackages_iterator *iter;
iter = filepackages_iter_new(nifd->namenode);
while ((otherpkg = filepackages_iter_next(iter))) {
if (otherpkg == tc->pkg)
continue;
debug(dbg_eachfile, "tarobject ... found in %s", otherpkg->name);
if (nifd->namenode->divert && nifd->namenode->divert->useinstead) {
/* Right, so we may be diverting this file. This makes the conflict
* OK iff one of us is the diverting package (we don't need to
* check for both being the diverting package, obviously). */
divpkg = nifd->namenode->divert->pkg;
debug(dbg_eachfile, "tarobject ... diverted, divpkg=%s",
divpkg ? divpkg->name : "<none>");
if (otherpkg == divpkg || tc->pkg == divpkg)
continue;
}
/* Nope? Hmm, file conflict, perhaps. Check Replaces. */
switch (otherpkg->clientdata->replacingfilesandsaid) {
case 2:
keepexisting = true;
case 1:
continue;
}
/* Is the package with the conflicting file in the “config files only”
* state? If so it must be a config file and we can silenty take it
* over. */
if (otherpkg->status == stat_configfiles)
continue;
/* Perhaps we're removing a conflicting package? */
if (otherpkg->clientdata->istobe == itb_remove)
continue;
/* Is the file an obsolete conffile in the other package
* and a conffile in the new package? */
if ((nifd->namenode->flags & fnnf_new_conff) &&
!statr && S_ISREG(stab.st_mode)) {
for (conff = otherpkg->installed.conffiles;
conff;
conff = conff->next) {
if (!conff->obsolete)
continue;
if (stat(conff->name, &stabtmp))
if (errno == ENOENT || errno == ENOTDIR || errno == ELOOP)
continue;
if (stabtmp.st_dev == stab.st_dev &&
stabtmp.st_ino == stab.st_ino)
break;
}
if (conff) {
debug(dbg_eachfiledetail, "tarobject other's obsolete conffile");
/* process_archive() will have copied its hash already. */
continue;
}
}
if (does_replace(tc->pkg, &tc->pkg->available,
otherpkg, &otherpkg->installed)) {
printf(_("Replacing files in old package %s ...\n"),otherpkg->name);
otherpkg->clientdata->replacingfilesandsaid = 1;
} else if (does_replace(otherpkg, &otherpkg->installed,
tc->pkg, &tc->pkg->available)) {
printf(_("Replaced by files in installed package %s ...\n"),
otherpkg->name);
otherpkg->clientdata->replacingfilesandsaid = 2;
nifd->namenode->flags &= ~fnnf_new_inarchive;
keepexisting = true;
} else {
if (!statr && S_ISDIR(stab.st_mode)) {
forcibleerr(fc_overwritedir,
_("trying to overwrite directory '%.250s' "
"in package %.250s %.250s with nondirectory"),
nifd->namenode->name, otherpkg->name,
versiondescribe(&otherpkg->installed.version,
vdew_nonambig));
} else {
/* At this point we are replacing something without a Replaces.
* If the new object is a directory and the previous object does
* not exist assume it's also a directory and don't complain. */
if (!(statr && ti->type == tar_filetype_dir))
forcibleerr(fc_overwrite,
_("trying to overwrite '%.250s', "
"which is also in package %.250s %.250s"),
nifd->namenode->name, otherpkg->name,
versiondescribe(&otherpkg->installed.version,
vdew_nonambig));
}
}
}
filepackages_iter_free(iter);
}
if (keepexisting) {
remove_file_from_list(tc, ti, oldnifd, nifd);
tarfile_skip_one_forward(tc, ti);
return 0;
}
if (filter_should_skip(ti)) {
nifd->namenode->flags &= ~fnnf_new_inarchive;
nifd->namenode->flags |= fnnf_filtered;
tarfile_skip_one_forward(tc, ti);
return 0;
}
if (existingdirectory)
return 0;
/* Now, at this stage we want to make sure neither of .dpkg-new and
* .dpkg-tmp are hanging around. */
ensure_pathname_nonexisting(fnamenewvb.buf);
ensure_pathname_nonexisting(fnametmpvb.buf);
/* Now we start to do things that we need to be able to undo
* if something goes wrong. Watch out for the CLEANUP comments to
* keep an eye on what's installed on the disk at each point. */
push_cleanup(cu_installnew, ~ehflag_normaltidy, NULL, 0, 1, (void *)nifd);
/*
* CLEANUP: Now we either have the old file on the disk, or not, in
* its original filename.
*/
/* Extract whatever it is as .dpkg-new ... */
switch (ti->type) {
case tar_filetype_file:
/* We create the file with mode 0 to make sure nobody can do anything with
* it until we apply the proper mode, which might be a statoverride. */
fd= open(fnamenewvb.buf, (O_CREAT|O_EXCL|O_WRONLY), 0);
if (fd < 0)
ohshite(_("unable to create `%.255s' (while processing `%.255s')"),
fnamenewvb.buf, ti->name);
push_cleanup(cu_closefd, ehflag_bombout, NULL, 0, 1, &fd);
debug(dbg_eachfiledetail, "tarobject file open size=%lu",
(unsigned long)ti->size);
{ char fnamebuf[256];
fd_fd_copy(tc->backendpipe, fd, ti->size,
_("backend dpkg-deb during `%.255s'"),
path_quote_filename(fnamebuf, ti->name, 256));
}
r = ti->size % TARBLKSZ;
if (r > 0)
if (safe_read(tc->backendpipe, databuf, TARBLKSZ - r) == -1)
ohshite(_("error reading from dpkg-deb pipe"));
fd_writeback_init(fd);
if (nifd->namenode->statoverride)
debug(dbg_eachfile, "tarobject ... stat override, uid=%d, gid=%d, mode=%04o",
nifd->namenode->statoverride->uid,
nifd->namenode->statoverride->gid,
nifd->namenode->statoverride->mode);
if (fchown(fd, st->uid, st->gid))
ohshite(_("error setting ownership of `%.255s'"), ti->name);
if (fchmod(fd, st->mode & ~S_IFMT))
ohshite(_("error setting permissions of `%.255s'"), ti->name);
/* Postpone the fsync, to try to avoid massive I/O degradation. */
if (!fc_unsafe_io)
nifd->namenode->flags |= fnnf_deferred_fsync;
pop_cleanup(ehflag_normaltidy); /* fd = open(fnamenewvb.buf) */
if (close(fd))
ohshite(_("error closing/writing `%.255s'"), ti->name);
newtarobject_utime(fnamenewvb.buf, st);
break;
case tar_filetype_fifo:
if (mkfifo(fnamenewvb.buf,0))
ohshite(_("error creating pipe `%.255s'"), ti->name);
debug(dbg_eachfiledetail, "tarobject fifo");
newtarobject_allmodes(fnamenewvb.buf, st);
break;
case tar_filetype_chardev:
if (mknod(fnamenewvb.buf, S_IFCHR, ti->dev))
ohshite(_("error creating device `%.255s'"), ti->name);
debug(dbg_eachfiledetail, "tarobject chardev");
newtarobject_allmodes(fnamenewvb.buf, st);
break;
case tar_filetype_blockdev:
if (mknod(fnamenewvb.buf, S_IFBLK, ti->dev))
ohshite(_("error creating device `%.255s'"), ti->name);
debug(dbg_eachfiledetail, "tarobject blockdev");
newtarobject_allmodes(fnamenewvb.buf, st);
break;
case tar_filetype_hardlink:
varbufreset(&hardlinkfn);
varbufaddstr(&hardlinkfn,instdir); varbufaddc(&hardlinkfn,'/');
varbufaddstr(&hardlinkfn, ti->linkname);
linknode = findnamenode(ti->linkname, 0);
if (linknode->flags & fnnf_deferred_rename)
varbufaddstr(&hardlinkfn, DPKGNEWEXT);
varbufaddc(&hardlinkfn, '\0');
if (link(hardlinkfn.buf,fnamenewvb.buf))
ohshite(_("error creating hard link `%.255s'"), ti->name);
debug(dbg_eachfiledetail, "tarobject hardlink");
newtarobject_allmodes(fnamenewvb.buf, st);
break;
case tar_filetype_symlink:
/* We've already cheched for an existing directory. */
if (symlink(ti->linkname, fnamenewvb.buf))
ohshite(_("error creating symbolic link `%.255s'"), ti->name);
debug(dbg_eachfiledetail, "tarobject symlink creating");
if (lchown(fnamenewvb.buf, st->uid, st->gid))
ohshite(_("error setting ownership of symlink `%.255s'"), ti->name);
break;
case tar_filetype_dir:
/* We've already checked for an existing directory. */
if (mkdir(fnamenewvb.buf,0))
ohshite(_("error creating directory `%.255s'"), ti->name);
debug(dbg_eachfiledetail, "tarobject directory creating");
newtarobject_allmodes(fnamenewvb.buf, st);
break;
default:
internerr("unknown tar type '%d', but already checked", ti->type);
}
set_selinux_path_context(fnamevb.buf, fnamenewvb.buf, st->mode);
/*
* CLEANUP: Now we have extracted the new object in .dpkg-new (or,
* if the file already exists as a directory and we were trying to
* extract a directory or symlink, we returned earlier, so we don't
* need to worry about that here).
*
* The old file is still in the original filename,
*/
/* First, check to see if it's a conffile. If so we don't install
* it now - we leave it in .dpkg-new for --configure to take care of. */
if (nifd->namenode->flags & fnnf_new_conff) {
debug(dbg_conffdetail,"tarobject conffile extracted");
nifd->namenode->flags |= fnnf_elide_other_lists;
return 0;
}
/* Now we move the old file out of the way, the backup file will
* be deleted later. */
if (statr) {
/* Don't try to back it up if it didn't exist. */
debug(dbg_eachfiledetail,"tarobject new - no backup");
} else {
if (ti->type == tar_filetype_dir || S_ISDIR(stab.st_mode)) {
/* One of the two is a directory - can't do atomic install. */
debug(dbg_eachfiledetail,"tarobject directory, nonatomic");
nifd->namenode->flags |= fnnf_no_atomic_overwrite;
if (rename(fnamevb.buf,fnametmpvb.buf))
ohshite(_("unable to move aside `%.255s' to install new version"),
ti->name);
} else if (S_ISLNK(stab.st_mode)) {
/* We can't make a symlink with two hardlinks, so we'll have to
* copy it. (Pretend that making a copy of a symlink is the same
* as linking to it.) */
varbufreset(&symlinkfn);
varbuf_grow(&symlinkfn, stab.st_size + 1);
r = readlink(fnamevb.buf, symlinkfn.buf, symlinkfn.size);
if (r < 0)
ohshite(_("unable to read link `%.255s'"), ti->name);
assert(r == stab.st_size);
varbuf_trunc(&symlinkfn, r);
varbufaddc(&symlinkfn, '\0');
if (symlink(symlinkfn.buf,fnametmpvb.buf))
ohshite(_("unable to make backup symlink for `%.255s'"), ti->name);
if (lchown(fnametmpvb.buf,stab.st_uid,stab.st_gid))
ohshite(_("unable to chown backup symlink for `%.255s'"), ti->name);
set_selinux_path_context(fnamevb.buf, fnametmpvb.buf, stab.st_mode);
} else {
debug(dbg_eachfiledetail,"tarobject nondirectory, `link' backup");
if (link(fnamevb.buf,fnametmpvb.buf))
ohshite(_("unable to make backup link of `%.255s' before installing new version"),
ti->name);
}
}
/*
* CLEANUP: Now the old file is in .dpkg-tmp, and the new file is still
* in .dpkg-new.
*/
if (ti->type == tar_filetype_file || ti->type == tar_filetype_symlink) {
nifd->namenode->flags |= fnnf_deferred_rename;
debug(dbg_eachfiledetail, "tarobject done and installation deferred");
} else {
if (rename(fnamenewvb.buf, fnamevb.buf))
ohshite(_("unable to install new version of `%.255s'"), ti->name);
/*
* CLEANUP: Now the new file is in the destination file, and the
* old file is in .dpkg-tmp to be cleaned up later. We now need
* to take a different attitude to cleanup, because we need to
* remove the new file.
*/
nifd->namenode->flags |= fnnf_placed_on_disk;
nifd->namenode->flags |= fnnf_elide_other_lists;
debug(dbg_eachfiledetail, "tarobject done and installed");
}
return 0;
}
void
pkg_format_show(const struct pkg_format_node *head,
struct pkginfo *pkg, struct pkginfoperfile *pif)
{
struct varbuf vb = VARBUF_INIT, fb = VARBUF_INIT, wb = VARBUF_INIT;
while (head) {
bool ok;
char fmt[16];
ok = false;
if (head->width > 0)
snprintf(fmt, 16, "%%%s%zds",
((head->pad) ? "-" : ""), head->width);
else
strcpy(fmt, "%s");
if (head->type == string) {
varbufprintf(&fb, fmt, head->data);
ok = true;
} else if (head->type == field) {
const struct fieldinfo *fip;
for (fip = fieldinfos; fip->name; fip++)
if (strcasecmp(head->data, fip->name) == 0) {
fip->wcall(&wb, pkg, pif, 0, fip);
varbufaddc(&wb, '\0');
varbufprintf(&fb, fmt, wb.buf);
varbufreset(&wb);
ok = true;
break;
}
if (!fip->name) {
const struct arbitraryfield *afp;
for (afp = pif->arbs; afp; afp = afp->next)
if (strcasecmp(head->data, afp->name) == 0) {
varbufprintf(&fb, fmt, afp->value);
ok = true;
break;
}
}
}
if (ok) {
size_t len = strlen(fb.buf);
if ((head->width > 0) && (len > head->width))
len = head->width;
varbufaddbuf(&vb, fb.buf, len);
}
varbufreset(&fb);
head = head->next;
}
if (vb.buf) {
varbufaddc(&vb, '\0');
fputs(vb.buf, stdout);
}
varbuf_destroy(&wb);
varbuf_destroy(&fb);
varbuf_destroy(&vb);
}
void process_archive(const char *filename) {
static const struct TarFunctions tf = {
tarfileread,
tarobject, tarobject, tarobject, tarobject, 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 cidirtmpnambuf[L_tmpnam+100];
static char *cidirbuf = NULL, *reasmbuf = NULL;
static struct fileinlist *newconffiles, *newfileslist;
static enum pkgstatus oldversionstatus;
static struct varbuf infofnvb, fnvb, depprobwhy;
static struct tarcontext tc;
int c1, r, admindirlen, i, infodirlen, infodirbaseused, status;
struct pkgiterator *it;
struct pkginfo *pkg, *otherpkg, *divpkg;
char *cidir, *cidirrest, *p;
char *pfilenamebuf, conffilenamebuf[MAXCONFFILENAME];
char *psize;
const char *pfilename, *newinfofilename;
struct fileinlist *newconff, **newconffileslastp;
struct fileinlist *cfile;
struct reversefilelistiter rlistit;
struct conffile *searchconff, **iconffileslastp, *newiconff;
struct filepackages *packageslump;
struct dependency *dsearch, *newdeplist, **newdeplistlastp;
struct dependency *newdep, *dep, *providecheck;
struct deppossi *psearch, **newpossilastp, *possi, *newpossi, *pdep;
FILE *conff;
DIR *dsd;
struct filenamenode *namenode;
struct dirent *de;
struct stat stab, oldfs;
struct pkg_deconf_list *deconpil, *deconpiltemp;
cleanup_pkg_failed= cleanup_conflictor_failed= 0;
admindirlen= strlen(admindir);
for (pfilename= filename ; pfilename && strlen(pfilename) > 30 &&
strchr(pfilename,'/') != NULL ; pfilename++ )
pfilename= strchr(pfilename,'/');
if (pfilename && pfilename != filename) {
pfilenamebuf= (char *)nfmalloc(strlen(pfilename)+5);
strcpy(pfilenamebuf,".../");
strcat(pfilenamebuf,pfilename);
pfilename= pfilenamebuf;
} else {
pfilename= filename;
}
if (stat(filename,&stab)) ohshite(_("cannot access archive"));
if (!f_noact) {
/* We can't `tentatively-reassemble' packages. */
if (!reasmbuf) {
reasmbuf= m_malloc(admindirlen+sizeof(REASSEMBLETMP)+5);
strcpy(reasmbuf,admindir);
strcat(reasmbuf,"/" REASSEMBLETMP);
}
if (unlink(reasmbuf) && errno != ENOENT)
ohshite(_("error ensuring `%.250s' doesn't exist"),reasmbuf);
push_cleanup(cu_pathname, ~0, NULL, 0, 1, (void *)reasmbuf);
c1= m_fork();
if (!c1) {
execlp(SPLITTER, SPLITTER, "-Qao", reasmbuf, filename, NULL);
ohshite(_("failed to exec dpkg-split to see if it's part of a multiparter"));
}
while ((r= waitpid(c1,&status,0)) == -1 && errno == EINTR);
if (r != c1) { onerr_abort++; ohshite(_("wait for dpkg-split failed")); }
switch (WIFEXITED(status) ? WEXITSTATUS(status) : -1) {
case 0:
/* It was a part - is it complete ? */
if (!stat(reasmbuf,&stab)) { /* Yes. */
filename= reasmbuf;
pfilename= _("reassembled package file");
break;
} else if (errno == ENOENT) { /* No. That's it, we skip it. */
return;
}
case 1:
/* No, it wasn't a part. */
break;
default:
checksubprocerr(status,SPLITTER,0);
}
}
/* Verify the package. */
if (!f_nodebsig && (stat(DEBSIGVERIFY, &stab)==0)) {
printf(_("Authenticating %s ...\n"), filename);
fflush(stdout);
c1 = m_fork();
if (!c1) {
execl(DEBSIGVERIFY, DEBSIGVERIFY, "-q", filename, NULL);
ohshite(_("failed to execl debsig-verify"));
} else {
int status;
waitpid(c1, &status, 0);
if (!(WIFEXITED(status) && WEXITSTATUS(status) == 0)) {
if (! fc_badverify) {
ohshit(_("Verification on package %s failed!"), filename);
} else {
fprintf(stderr, _("Verification on package %s failed,\nbut installing anyway as you requested.\n"), filename);
}
} else {
printf(_("passed\n"));
}
}
}
if (f_noact) {
cidir= cidirtmpnambuf;
/* We use tmpnam here, not to get a unique filename, but to get a unique directory. */
if (!tmpnam(cidir)) ohshite(_("unable to get unique filename for control info"));
strcat(cidir,"/");
} else {
/* We want it to be on the same filesystem so that we can
* use rename(2) to install the postinst &c.
*/
if (!cidirbuf)
cidirbuf= m_malloc(admindirlen+sizeof(CONTROLDIRTMP)+MAXCONTROLFILENAME+10);
cidir= cidirbuf;
strcpy(cidir,admindir);
strcat(cidir, "/" CONTROLDIRTMP);
}
cidirrest= cidir + strlen(cidir);
assert(*cidir && cidirrest[-1] == '/');
cidirrest[-1] = '\0';
ensure_pathname_nonexisting(cidir); cidirrest[-1]= '/';
push_cleanup(cu_cidir, ~0, NULL, 0, 2, (void *)cidir, (void *)cidirrest);
c1= m_fork();
if (!c1) {
cidirrest[-1] = '\0';
execlp(BACKEND, BACKEND, "--control", filename, cidir, NULL);
ohshite(_("failed to exec dpkg-deb to extract control information"));
}
waitsubproc(c1,BACKEND " --control",0);
strcpy(cidirrest,CONTROLFILE);
parsedb(cidir, pdb_recordavailable | pdb_rejectstatus | pdb_ignorefiles,
&pkg,NULL,NULL);
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, "%lu", (unsigned long)stab.st_size);
pkg->files->size = psize;
if (cipaction->arg == act_avail) {
printf(_("Recorded info about %s from %s.\n"),pkg->name,pfilename);
pop_cleanup(ehflag_normaltidy);
return;
}
if (pkg->available.architecture && *pkg->available.architecture &&
strcmp(pkg->available.architecture,"all") &&
strcmp(pkg->available.architecture,architecture))
forcibleerr(fc_architecture,
_("package architecture (%s) does not match system (%s)"),
pkg->available.architecture,architecture);
if (!pkg->installed.valid) blankpackageperfile(&pkg->installed);
assert(pkg->available.valid);
for (deconpil= deconfigure;
deconpil;
deconpil= deconpiltemp) {
deconpiltemp= deconpil->next;
free(deconpil);
}
deconfigure = NULL;
clear_istobes();
if (!wanttoinstall(pkg,&pkg->available.version,1)) {
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. */
if (dsearch->list->ed->installed.valid) {
for (psearch= dsearch->list->ed->installed.depended;
psearch;
psearch= psearch->nextrev) {
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, 1)) {
varbufaddc(&depprobwhy,0);
fprintf(stderr, _("dpkg: regarding %s containing %s, pre-dependency problem:\n%s"),
pfilename, pkg->name, depprobwhy.buf);
if (!force_depends(dsearch->list))
ohshit(_("pre-dependency problem - not installing %.250s"),pkg->name);
warning(_("ignoring pre-dependency problem!"));
}
}
}
/* Look for things that conflict with us. */
for (psearch= pkg->installed.depended; psearch; psearch= psearch->nextrev) {
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,
versiondescribe(&pkg->installed.version,vdew_nonambig),
pfilename);
log_action("upgrade", pkg);
} else {
printf(_("Unpacking %s (from %s) ...\n"),pkg->name,pfilename);
log_action("install", pkg);
}
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);
/* 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_closefile, ehflag_bombout, NULL, 0, 1, (void *)conff);
while (fgets(conffilenamebuf,MAXCONFFILENAME-2,conff)) {
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;
for (packageslump= newconff->namenode->packages;
packageslump;
packageslump= packageslump->more) {
for (i=0; i < PERFILEPACKAGESLUMP && packageslump->pkgs[i]; i++) {
otherpkg= packageslump->pkgs[i];
debug(dbg_conffdetail,"process_archive conffile `%s' in package %s - conff ?",
newconff->namenode->name,otherpkg->name);
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,otherpkg->name,searchconff->name);
if (searchconff) {
debug(dbg_conff,"process_archive conffile `%s' package=%s %s hash=%s",
newconff->namenode->name,otherpkg->name,
otherpkg == pkg ? "same" : "different!",
searchconff->hash);
if (otherpkg == pkg) goto xit_conff_hashcopy_srch;
}
}
}
xit_conff_hashcopy_srch:
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->eflag |= eflag_reinstreq;
pkg->status= stat_halfconfigured;
modstatdb_note(pkg);
push_cleanup(cu_prermupgrade, ~ehflag_normaltidy, NULL, 0, 1, (void *)pkg);
maintainer_script_alternative(pkg, PRERMFILE, "pre-removal", cidir, cidirrest,
"upgrade", "failed-upgrade");
pkg->status= 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"),
deconpil->pkg->name, removing->name);
else
printf(_("De-configuring %s ...\n"), deconpil->pkg->name);
trig_activate_packageprocessing(deconpil->pkg);
deconpil->pkg->status= 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->name,
versiondescribe(&pkg->available.version,
vdew_nonambig),
"removing", removing->name,
versiondescribe(&removing->installed.version,
vdew_nonambig),
NULL);
} else {
maintainer_script_installed(deconpil->pkg, PRERMFILE, "pre-removal",
"deconfigure", "in-favour", pkg->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]);
conflictor[i]->status= 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->name,
versiondescribe(&pkg->available.version,
vdew_nonambig),
NULL);
conflictor[i]->status= stat_halfinstalled;
modstatdb_note(conflictor[i]);
}
pkg->eflag |= eflag_reinstreq;
if (pkg->status == stat_notinstalled)
pkg->installed.version= pkg->available.version;
pkg->status= 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"),pkg->name);
}
/*
* 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]);
c1= m_fork();
if (!c1) {
m_dup2(p1[1],1); close(p1[0]); close(p1[1]);
execlp(BACKEND, BACKEND, "--fsys-tarfile", filename, NULL);
ohshite(_("unable to exec dpkg-deb to get filesystem archive"));
}
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= TarExtractor((void*)&tc, &tf);
if (r) {
if (errno) {
ohshite(_("error reading dpkg-deb tar output"));
} else {
ohshit(_("corrupted filesystem tarfile - corrupted package archive"));
}
}
fd_null_copy(p1[0], -1, _("dpkg-deb: zap possible trailing zeros"));
close(p1[0]);
p1[0] = -1;
waitsubproc(c1,BACKEND " --fsys-tarfile",PROCPIPE);
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->status= 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);
trig_file_activate(usenode, pkg);
fnamevb.used= fnameidlu;
varbufaddstr(&fnamevb, usenode->name);
varbufaddc(&fnamevb,0);
if (!stat(namenode->name,&stab) && S_ISDIR(stab.st_mode)) {
debug(dbg_eachfiledetail, "process_archive: %s is a directory",
namenode->name);
if (isdirectoryinuse(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 {
/* 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.
*/
struct fileinlist *sameas = NULL;
static struct stat empty_stat;
struct varbuf cfilename = VARBUF_INIT;
/* 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 (!cfile->namenode->filestat) {
struct stat tmp_stat;
varbufreset(&cfilename);
varbufaddstr(&cfilename, instdir);
varbufaddc(&cfilename, '/');
varbufaddstr(&cfilename, cfile->namenode->name);
varbufaddc(&cfilename, '\0');
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);
}
}
varbuffree(&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,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, TRIGGERSCIFILE),
trig_cicb_interest_delete, NULL, pkg);
trig_parse_ci(cidir, trig_cicb_interest_add, NULL, pkg);
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");
varbufreset(&infofnvb);
varbufaddstr(&infofnvb,admindir);
varbufaddstr(&infofnvb, "/" INFODIR);
infodirlen= infofnvb.used;
varbufaddc(&infofnvb,0);
dsd= opendir(infofnvb.buf);
if (!dsd) ohshite(_("cannot read info directory"));
push_cleanup(cu_closedir, ~0, NULL, 0, 1, (void *)dsd);
while ((de = readdir(dsd)) != NULL) {
debug(dbg_veryverbose, "process_archive info file `%s'", de->d_name);
if (de->d_name[0] == '.') continue; /* ignore dotfiles, including `.' and `..' */
p= strrchr(de->d_name,'.'); if (!p) continue; /* ignore anything odd */
if (strlen(pkg->name) != (size_t)(p-de->d_name) ||
strncmp(de->d_name,pkg->name,p-de->d_name)) continue;
debug(dbg_stupidlyverbose, "process_archive info this pkg");
/* Right do we have one ? */
p++; /* skip past the full stop */
if (!strcmp(p,LISTFILE)) continue; /* We do the list separately */
if (strlen(p) > MAXCONTROLFILENAME)
ohshit(_("old version of package has overly-long info file name starting `%.250s'"),
de->d_name);
infofnvb.used= infodirlen;
varbufaddstr(&infofnvb,de->d_name);
varbufaddc(&infofnvb,0);
strcpy(cidirrest,p);
if (!rename(cidir,infofnvb.buf)) {
debug(dbg_scripts, "process_archive info installed %s as %s",
cidir, infofnvb.buf);
} else if (errno == ENOENT) {
/* Right, no new version. */
if (unlink(infofnvb.buf))
ohshite(_("unable to remove obsolete info file `%.250s'"),infofnvb.buf);
debug(dbg_scripts, "process_archive info unlinked %s",infofnvb.buf);
} else {
ohshite(_("unable to install (supposed) new info file `%.250s'"),cidir);
}
}
pop_cleanup(ehflag_normaltidy); /* closedir */
*cidirrest = '\0'; /* the directory itself */
dsd= opendir(cidir);
if (!dsd) ohshite(_("unable to open temp control directory"));
push_cleanup(cu_closedir, ~0, NULL, 0, 1, (void *)dsd);
while ((de= readdir(dsd))) {
if (strchr(de->d_name,'.')) {
debug(dbg_scripts,"process_archive tmp.ci script/file `%s' contains dot",
de->d_name);
continue;
}
if (strlen(de->d_name) > MAXCONTROLFILENAME)
ohshit(_("package contains overly-long control info file name (starting `%.50s')"),
de->d_name);
strcpy(cidirrest,de->d_name);
/* First we check it's not a directory. */
if (!rmdir(cidir))
ohshit(_("package control info contained directory `%.250s'"),cidir);
else if (errno != ENOTDIR)
ohshite(_("package control info rmdir of `%.250s' didn't say not a dir"),de->d_name);
if (!strcmp(de->d_name,CONTROLFILE)) {
debug(dbg_scripts,"process_archive tmp.ci script/file `%s' is control",cidir);
continue; /* ignore the control file */
}
if (!strcmp(de->d_name,LISTFILE)) {
warning(_("package %s contained list as info file"), pkg->name);
continue;
}
/* Right, install it */
newinfofilename= pkgadminfile(pkg,de->d_name);
if (rename(cidir,newinfofilename))
ohshite(_("unable to install new info file `%.250s' as `%.250s'"),
cidir,newinfofilename);
debug(dbg_scripts,"process_archive tmp.ci script/file `%s' installed as `%s'",
cidir, newinfofilename);
}
pop_cleanup(ehflag_normaltidy); /* closedir */
/* 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->nextrev = newpossi->backrev = NULL;
newpossi->verrel= possi->verrel;
if (possi->verrel != dvr_none)
newpossi->version= possi->version;
else
blankversion(&newpossi->version);
newpossi->cyclebreak= 0;
*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);
/* The `depended' pointer in the structure doesn't represent anything
* that is actually specified by this package - it's there so we
* can find out what other packages refer to this one. So,
* we don't copy it. We go straight on to copy the text fields.
*/
pkg->installed.essential= pkg->available.essential;
pkg->installed.description= pkg->available.description;
pkg->installed.maintainer= pkg->available.maintainer;
pkg->installed.source= pkg->available.source;
pkg->installed.architecture= pkg->available.architecture;
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= iterpkgstart();
while ((otherpkg = iterpkgnext(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",otherpkg->name);
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->installed.depended;
pdep;
pdep= pdep->nextrev) {
if (pdep->up->type != dep_depends && pdep->up->type != dep_predepends &&
pdep->up->type != dep_recommends) continue;
if (depisok(pdep->up, &depprobwhy, NULL, 0))
continue;
varbufaddc(&depprobwhy,0);
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->installed.depended;
pdep;
pdep= pdep->nextrev) {
if (pdep->up->type != dep_depends && pdep->up->type != dep_predepends &&
pdep->up->type != dep_recommends)
continue;
if (depisok(pdep->up, &depprobwhy, NULL, 0))
continue;
varbufaddc(&depprobwhy,0);
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;
printf(_("(Noting disappearance of %s, which has been completely replaced.)\n"),
otherpkg->name);
debug(dbg_general, "process_archive disappearing %s",otherpkg->name);
/* 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.
*/
trig_activate_packageprocessing(otherpkg);
maintainer_script_installed(otherpkg, POSTRMFILE,
"post-removal script (for disappearance)",
"disappear", pkg->name,
versiondescribe(&pkg->available.version,
vdew_nonambig),
NULL);
/* OK, now we delete all the stuff in the `info' directory .. */
varbufreset(&fnvb);
varbufaddstr(&fnvb,admindir);
varbufaddstr(&fnvb,"/" INFODIR);
infodirbaseused= fnvb.used;
varbufaddc(&fnvb,0);
dsd= opendir(fnvb.buf); if (!dsd) ohshite(_("cannot read info directory"));
push_cleanup(cu_closedir, ~0, NULL, 0, 1, (void *)dsd);
debug(dbg_general, "process_archive disappear cleaning info directory");
while ((de = readdir(dsd)) != NULL) {
debug(dbg_veryverbose, "process_archive info file `%s'", de->d_name);
if (de->d_name[0] == '.') continue;
p= strrchr(de->d_name,'.'); if (!p) continue;
if (strlen(otherpkg->name) != (size_t)(p-de->d_name) ||
strncmp(de->d_name,otherpkg->name,p-de->d_name)) continue;
debug(dbg_stupidlyverbose, "process_archive info this pkg");
fnvb.used= infodirbaseused;
varbufaddstr(&fnvb,de->d_name);
varbufaddc(&fnvb,0);
if (unlink(fnvb.buf))
ohshite(_("unable to delete disappearing control info file `%.250s'"),fnvb.buf);
debug(dbg_scripts, "process_archive info unlinked %s",fnvb.buf);
}
pop_cleanup(ehflag_normaltidy); /* closedir */
otherpkg->status= stat_notinstalled;
otherpkg->want = want_unknown;
otherpkg->eflag = eflag_ok;
blankversion(&otherpkg->configversion);
blankpackageperfile(&otherpkg->installed);
otherpkg->clientdata->fileslistvalid= 0;
modstatdb_note(otherpkg);
} /* while (otherpkg= ... */
iterpkgend(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) {
if (!(cfile->namenode->flags & fnnf_elide_other_lists)) continue;
if (cfile->namenode->divert && cfile->namenode->divert->useinstead) {
divpkg= cfile->namenode->divert->pkg;
if (divpkg == pkg) {
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, divpkg ? divpkg->name : "<local>");
}
} else {
divpkg = NULL;
debug(dbg_eachfile, "process_archive looking for overwriting `%s'",
cfile->namenode->name);
}
for (packageslump= cfile->namenode->packages;
packageslump;
packageslump= packageslump->more) {
for (i=0; i < PERFILEPACKAGESLUMP && packageslump->pkgs[i]; i++) {
otherpkg= packageslump->pkgs[i];
debug(dbg_eachfiledetail, "process_archive ... found in %s\n",otherpkg->name);
/* 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 == divpkg) {
debug(dbg_eachfiledetail, "process_archive ... diverted, skipping\n");
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->clientdata->files, 1);
ensure_package_clientdata(otherpkg);
debug(dbg_veryverbose, "process_archive overwrote from %s",otherpkg->name);
}
}
}
/* 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->status= 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;
fnametmpvb.used= fnameidlu;
varbufaddstr(&fnametmpvb,namenodetouse(cfile->namenode,pkg)->name);
varbufaddstr(&fnametmpvb,DPKGTEMPEXT);
varbufaddc(&fnametmpvb,0);
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->eflag = eflag_ok;
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 == act_install) add_to_queue(pkg);
}
void
show1package(const struct lstitem *head, struct pkginfo *pkg)
{
struct varbuf vb = VARBUF_INIT, fb = VARBUF_INIT, wb = VARBUF_INIT;
/* Make sure we have package info available, even if it's all empty. */
if (!pkg->installed.valid)
blankpackageperfile(&pkg->installed);
while (head) {
int ok;
char fmt[16];
ok = 0;
if (head->width > 0)
snprintf(fmt, 16, "%%%s%zds",
((head->pad) ? "-" : ""), head->width);
else
strcpy(fmt, "%s");
if (head->type == string) {
varbufprintf(&fb, fmt, head->data);
ok = 1;
} else if (head->type == field) {
const struct fieldinfo *fip;
for (fip = fieldinfos; fip->name; fip++)
if (strcasecmp(head->data, fip->name) == 0) {
fip->wcall(&wb, pkg, &pkg->installed, 0, fip);
varbufaddc(&wb, '\0');
varbufprintf(&fb, fmt, wb.buf);
varbufreset(&wb);
ok = 1;
break;
}
if (!fip->name && pkg->installed.valid) {
const struct arbitraryfield *afp;
for (afp = pkg->installed.arbs; afp; afp = afp->next)
if (strcasecmp(head->data, afp->name) == 0) {
varbufprintf(&fb, fmt, afp->value);
ok = 1;
break;
}
}
}
if (ok) {
size_t len = strlen(fb.buf);
if ((head->width > 0) && (len > head->width))
len = head->width;
varbufaddbuf(&vb, fb.buf, len);
}
varbufreset(&fb);
head = head->next;
}
if (vb.buf) {
varbufaddc(&vb, '\0');
fputs(vb.buf, stdout);
}
varbuffree(&wb);
varbuffree(&fb);
varbuffree(&vb);
}
void setselections(const char *const *argv) {
const struct namevalue *nvp;
struct pkginfo *pkg;
const char *e;
int c, lno;
struct varbuf namevb = VARBUF_INIT;
struct varbuf selvb = VARBUF_INIT;
if (*argv)
badusage(_("--%s takes no arguments"), cipaction->olong);
modstatdb_init(admindir,msdbrw_write);
lno= 1;
for (;;) {
varbufreset(&namevb);
varbufreset(&selvb);
do { c= getchar(); if (c == '\n') lno++; } while (c != EOF && isspace(c));
if (c == EOF) break;
if (c == '#') {
do { c= getchar(); if (c == '\n') lno++; } while (c != EOF && c != '\n');
continue;
}
while (!isspace(c)) {
varbufaddc(&namevb,c);
c= getchar();
if (c == EOF) ohshit(_("unexpected eof in package name at line %d"),lno);
if (c == '\n') ohshit(_("unexpected end of line in package name at line %d"),lno);
}
while (c != EOF && isspace(c)) {
c= getchar();
if (c == EOF) ohshit(_("unexpected eof after package name at line %d"),lno);
if (c == '\n') ohshit(_("unexpected end of line after package name at line %d"),lno);
}
while (c != EOF && !isspace(c)) {
varbufaddc(&selvb,c);
c= getchar();
}
while (c != EOF && c != '\n') {
c= getchar();
if (!isspace(c))
ohshit(_("unexpected data after package and selection at line %d"),lno);
}
varbufaddc(&namevb,0);
varbufaddc(&selvb,0);
e = pkg_name_is_illegal(namevb.buf, NULL);
if (e) ohshit(_("illegal package name at line %d: %.250s"),lno,e);
nvp = namevalue_find_by_name(wantinfos, selvb.buf);
if (nvp == NULL)
ohshit(_("unknown wanted status at line %d: %.250s"), lno, selvb.buf);
pkg = pkg_db_find(namevb.buf);
pkg->want= nvp->value;
if (c == EOF) break;
lno++;
}
if (ferror(stdin)) ohshite(_("read error on standard input"));
modstatdb_shutdown();
varbuf_destroy(&namevb);
varbuf_destroy(&selvb);
}
void check_conflict(struct dependency *dep, struct pkginfo *pkg,
const char *pfilename) {
struct pkginfo *fixbyrm;
struct deppossi *pdep, flagdeppossi;
struct varbuf conflictwhy = VARBUF_INIT, removalwhy = VARBUF_INIT;
struct dependency *providecheck;
fixbyrm = NULL;
if (depisok(dep, &conflictwhy, &fixbyrm, false)) {
varbuf_destroy(&conflictwhy);
varbuf_destroy(&removalwhy);
return;
}
if (fixbyrm) {
ensure_package_clientdata(fixbyrm);
if (fixbyrm->clientdata->istobe == itb_installnew) {
fixbyrm= dep->up;
ensure_package_clientdata(fixbyrm);
}
if (((pkg->available.essential && fixbyrm->installed.essential) ||
(((fixbyrm->want != want_install && fixbyrm->want != want_hold) ||
does_replace(pkg, &pkg->available, fixbyrm, &fixbyrm->installed)) &&
(!fixbyrm->installed.essential || fc_removeessential)))) {
assert(fixbyrm->clientdata->istobe == itb_normal || fixbyrm->clientdata->istobe == itb_deconfigure);
fixbyrm->clientdata->istobe= itb_remove;
fprintf(stderr, _("dpkg: considering removing %s in favour of %s ...\n"),
fixbyrm->name, pkg->name);
if (!(fixbyrm->status == stat_installed ||
fixbyrm->status == stat_triggerspending ||
fixbyrm->status == stat_triggersawaited)) {
fprintf(stderr,
_("%s is not properly installed - ignoring any dependencies on it.\n"),
fixbyrm->name);
pdep = NULL;
} else {
for (pdep= fixbyrm->installed.depended;
pdep;
pdep = pdep->rev_next) {
if (pdep->up->type != dep_depends && pdep->up->type != dep_predepends)
continue;
if (depisok(pdep->up, &removalwhy, NULL, false))
continue;
varbufaddc(&removalwhy,0);
if (!try_remove_can(pdep,fixbyrm,removalwhy.buf))
break;
}
if (!pdep) {
/* If we haven't found a reason not to yet, let's look some more. */
for (providecheck= fixbyrm->installed.depends;
providecheck;
providecheck= providecheck->next) {
if (providecheck->type != dep_provides) continue;
for (pdep= providecheck->list->ed->installed.depended;
pdep;
pdep = pdep->rev_next) {
if (pdep->up->type != dep_depends && pdep->up->type != dep_predepends)
continue;
if (depisok(pdep->up, &removalwhy, NULL, false))
continue;
varbufaddc(&removalwhy,0);
fprintf(stderr, _("dpkg"
": may have trouble removing %s, as it provides %s ...\n"),
fixbyrm->name, providecheck->list->ed->name);
if (!try_remove_can(pdep,fixbyrm,removalwhy.buf))
goto break_from_both_loops_at_once;
}
}
break_from_both_loops_at_once:;
}
}
if (!pdep && skip_due_to_hold(fixbyrm)) {
pdep= &flagdeppossi;
}
if (!pdep && (fixbyrm->eflag & eflag_reinstreq)) {
if (fc_removereinstreq) {
fprintf(stderr, _("dpkg: package %s requires reinstallation, but will"
" remove anyway as you requested.\n"), fixbyrm->name);
} else {
fprintf(stderr, _("dpkg: package %s requires reinstallation, "
"will not remove.\n"), fixbyrm->name);
pdep= &flagdeppossi;
}
}
if (!pdep) {
if (cflict_index >= MAXCONFLICTORS)
ohshit(_("package %s has too many Conflicts/Replaces pairs"),
pkg->name);
/* This conflict is OK - we'll remove the conflictor. */
conflictor[cflict_index++]= fixbyrm;
varbuf_destroy(&conflictwhy); varbuf_destroy(&removalwhy);
fprintf(stderr, _("dpkg: yes, will remove %s in favour of %s.\n"),
fixbyrm->name, pkg->name);
return;
}
/* Put it back. */
fixbyrm->clientdata->istobe = itb_normal;
}
}
varbufaddc(&conflictwhy,0);
fprintf(stderr, _("dpkg: regarding %s containing %s:\n%s"),
pfilename, pkg->name, conflictwhy.buf);
if (!force_conflicts(dep->list))
ohshit(_("conflicting packages - not installing %.250s"),pkg->name);
warning(_("ignoring conflict, may proceed anyway!"));
varbuf_destroy(&conflictwhy);
return;
}
void archivefiles(const char *const *argv) {
const char *volatile thisarg;
const char *const *volatile argp;
jmp_buf ejbuf;
int pi[2], fc, nfiles, c, i, r;
FILE *pf;
static struct varbuf findoutput;
const char **arglist;
char *p;
trigproc_install_hooks();
modstatdb_init(admindir,
f_noact ? msdbrw_readonly
: cipaction->arg == act_avail ? msdbrw_write
: fc_nonroot ? msdbrw_write
: msdbrw_needsuperuser);
checkpath();
log_message("startup archives %s", cipaction->olong);
if (f_recursive) {
if (!*argv)
badusage(_("--%s --recursive needs at least one path argument"),cipaction->olong);
m_pipe(pi);
fc = subproc_fork();
if (!fc) {
struct command cmd;
const char *const *ap;
m_dup2(pi[1],1); close(pi[0]); close(pi[1]);
command_init(&cmd, FIND, _("find for dpkg --recursive"));
command_add_args(&cmd, FIND, "-L", NULL);
for (ap = argv; *ap; ap++) {
if (strchr(FIND_EXPRSTARTCHARS,(*ap)[0])) {
char *a;
a= m_malloc(strlen(*ap)+10);
strcpy(a,"./");
strcat(a,*ap);
command_add_arg(&cmd, a);
} else {
command_add_arg(&cmd, (const char *)*ap);
}
}
command_add_args(&cmd, "-name", "*.deb", "-type", "f", "-print0", NULL);
command_exec(&cmd);
}
close(pi[1]);
nfiles= 0;
pf= fdopen(pi[0],"r"); if (!pf) ohshite(_("failed to fdopen find's pipe"));
varbufreset(&findoutput);
while ((c= fgetc(pf)) != EOF) {
varbufaddc(&findoutput,c);
if (!c) nfiles++;
}
if (ferror(pf)) ohshite(_("error reading find's pipe"));
if (fclose(pf)) ohshite(_("error closing find's pipe"));
r = subproc_wait_check(fc, "find", PROCNOERR);
if (r != 0)
ohshit(_("find for --recursive returned unhandled error %i"),r);
if (!nfiles)
ohshit(_("searched, but found no packages (files matching *.deb)"));
varbufaddc(&findoutput,0);
varbufaddc(&findoutput,0);
arglist= m_malloc(sizeof(char*)*(nfiles+1));
p= findoutput.buf; i=0;
while (*p) {
arglist[i++]= p;
while (*p++ != '\0') ;
}
arglist[i] = NULL;
argp= arglist;
} else {
if (!*argv) badusage(_("--%s needs at least one package archive file argument"),
cipaction->olong);
argp= argv;
}
currenttime = time(NULL);
/* Initialize fname variables contents. */
varbufreset(&fnamevb);
varbufreset(&fnametmpvb);
varbufreset(&fnamenewvb);
varbufaddstr(&fnamevb,instdir); varbufaddc(&fnamevb,'/');
varbufaddstr(&fnametmpvb,instdir); varbufaddc(&fnametmpvb,'/');
varbufaddstr(&fnamenewvb,instdir); varbufaddc(&fnamenewvb,'/');
fnameidlu= fnamevb.used;
ensure_diversions();
ensure_statoverrides();
while ((thisarg = *argp++) != NULL) {
if (setjmp(ejbuf)) {
pop_error_context(ehflag_bombout);
if (abort_processing)
break;
continue;
}
push_error_context_jump(&ejbuf, print_error_perpackage, thisarg);
process_archive(thisarg);
onerr_abort++;
m_output(stdout, _("<standard output>"));
m_output(stderr, _("<standard error>"));
onerr_abort--;
pop_error_context(ehflag_normaltidy);
}
switch (cipaction->arg) {
case act_install:
case act_configure:
case act_triggers:
case act_remove:
case act_purge:
process_queue();
case act_unpack:
case act_avail:
break;
default:
internerr("unknown action '%d'", cipaction->arg);
}
trigproc_run_deferred();
modstatdb_shutdown();
}
static void
checkrename(const char *rsrc, const char *rdest)
{
struct stat ssrc;
struct stat sdest;
int has_src;
int has_dest;
static struct varbuf tmpfilename;
int tmpfile;
if (!dorename_) return;
has_src = !lstat(rsrc, &ssrc);
if (!has_src && errno != ENOENT)
ohshite(_("cannot stat old name '%s'"), rsrc);
has_dest = !lstat(rdest, &sdest);
if (!has_dest && errno != ENOENT)
ohshite(_("cannot state new name '%s'"), rdest);
/* Unfortunately we have to check for write access in both places, just
* having +w is not enough, since people do mount things RO, and we need
* to fail before we start mucking around with things. So we open a file
* with the same name as the diversions but with an extension that
* (hopefully) wont overwrite anything. If it succeeds, we assume a
* writable filesystem.
*/
varbufreset(&tmpfilename);
varbufaddstr(&tmpfilename, rsrc);
varbufaddstr(&tmpfilename, ".dpkg-devert.tmp");
varbufaddc(&tmpfilename, 0);
tmpfile = open(tmpfilename.buf, O_WRONLY | O_CREAT);
if (tmpfile != -1) {
unlink(tmpfilename.buf);
close(tmpfile);
}
else if (errno == ENOENT) {
dorename_ = 0;
/* If the source file is not present and we are not going to do
the rename anyway there's no point in checking the target. */
return;
}
else
ohshite(_("error checking '%s'"), rsrc);
varbufreset(&tmpfilename);
varbufaddstr(&tmpfilename, rdest);
varbufaddstr(&tmpfilename, ".dpkg-devert.tmp");
varbufaddc(&tmpfilename, 0);
tmpfile = open(tmpfilename.buf, O_WRONLY | O_CREAT);
if (tmpfile != -1) {
unlink(tmpfilename.buf);
close(tmpfile);
}
else
ohshite(_("error checking '%s'"), rdest);
if (has_src && has_dest &&
!(ssrc.st_dev == sdest.st_dev && ssrc.st_ino == sdest.st_ino)) {
ohshite(_("rename involves overwriting '%s' with \n"
" different file '%s', not allowed"), rdest, rsrc);
}
}
void
ensure_diversions(void)
{
static struct varbuf vb;
struct stat stab1, stab2;
char linebuf[MAXDIVERTFILENAME];
FILE *file;
struct diversion *ov, *oicontest, *oialtname;
varbufreset(&vb);
varbufaddstr(&vb, admindir);
varbufaddstr(&vb, "/" DIVERSIONSFILE);
varbufaddc(&vb, 0);
onerr_abort++;
file = fopen(vb.buf,"r");
if (!file) {
if (errno != ENOENT)
ohshite(_("failed to open diversions file"));
if (!diversionsfile) {
onerr_abort--;
return;
}
} else if (diversionsfile) {
if (fstat(fileno(diversionsfile), &stab1))
ohshite(_("failed to fstat previous diversions file"));
if (fstat(fileno(file), &stab2))
ohshite(_("failed to fstat diversions file"));
if (stab1.st_dev == stab2.st_dev &&
stab1.st_ino == stab2.st_ino) {
fclose(file);
onerr_abort--;
return;
}
}
if (diversionsfile)
fclose(diversionsfile);
diversionsfile = file;
setcloexec(fileno(diversionsfile), vb.buf);
for (ov = diversions; ov; ov = ov->next) {
ov->useinstead->divert->camefrom->divert = NULL;
ov->useinstead->divert = NULL;
}
diversions = NULL;
if (!file) {
onerr_abort--;
return;
}
while (fgets_checked(linebuf, sizeof(linebuf), file, vb.buf) >= 0) {
oicontest = nfmalloc(sizeof(struct diversion));
oialtname = nfmalloc(sizeof(struct diversion));
oialtname->camefrom = findnamenode(linebuf, 0);
oialtname->useinstead = NULL;
fgets_must(linebuf, sizeof(linebuf), file, vb.buf);
oicontest->useinstead = findnamenode(linebuf, 0);
oicontest->camefrom = NULL;
fgets_must(linebuf, sizeof(linebuf), file, vb.buf);
oicontest->pkg = oialtname->pkg = strcmp(linebuf, ":") ?
pkg_db_find(linebuf) : NULL;
if (oialtname->camefrom->divert ||
oicontest->useinstead->divert)
ohshit(_("conflicting diversions involving `%.250s' or `%.250s'"),
oialtname->camefrom->name, oicontest->useinstead->name);
oialtname->camefrom->divert = oicontest;
oicontest->useinstead->divert = oialtname;
oicontest->next = diversions;
diversions = oicontest;
}
onerr_abort--;
}
void commandfd(const char *const *argv) {
jmp_buf ejbuf;
struct varbuf linevb = VARBUF_INIT;
const char * pipein;
const char **newargs = NULL;
char *ptr, *endptr;
FILE *in;
unsigned long infd;
int c, lno, i;
bool skipchar;
void (*actionfunction)(const char *const *argv);
pipein = *argv++;
if (pipein == NULL)
badusage(_("--command-fd takes one argument, not zero"));
if (*argv)
badusage(_("--command-fd only takes one argument"));
errno = 0;
infd = strtoul(pipein, &endptr, 10);
if (pipein == endptr || *endptr || infd > INT_MAX)
ohshite(_("invalid integer for --%s: `%.250s'"), "command-fd", pipein);
if ((in= fdopen(infd, "r")) == NULL)
ohshite(_("couldn't open `%i' for stream"), (int) infd);
if (setjmp(ejbuf)) { /* expect warning about possible clobbering of argv */
error_unwind(ehflag_bombout); exit(2);
}
for (;;) {
bool mode = false;
int argc= 1;
lno= 0;
push_error_handler(&ejbuf, print_error_fatal, NULL);
do { c= getc(in); if (c == '\n') lno++; } while (c != EOF && isspace(c));
if (c == EOF) break;
if (c == '#') {
do { c= getc(in); if (c == '\n') lno++; } while (c != EOF && c != '\n');
continue;
}
varbufreset(&linevb);
do {
varbufaddc(&linevb,c);
c= getc(in);
if (c == '\n') lno++;
if (isspace(c)) argc++; /* This isn't fully accurate, but overestimating can't hurt. */
} while (c != EOF && c != '\n');
if (c == EOF) ohshit(_("unexpected eof before end of line %d"),lno);
if (!argc) continue;
varbufaddc(&linevb,0);
newargs = m_realloc(newargs, sizeof(const char *) * (argc + 1));
argc= 1;
ptr= linevb.buf;
endptr= ptr + linevb.used;
skipchar = false;
while(ptr < endptr) {
if (skipchar) {
skipchar = false;
} else if (*ptr == '\\') {
memmove(ptr, (ptr+1), (linevb.used-(linevb.buf - ptr)-1));
endptr--;
skipchar = true;
continue;
} else if (isspace(*ptr)) {
if (mode == true) {
*ptr = '\0';
mode = false;
}
} else {
if (mode == false) {
newargs[argc]= ptr;
argc++;
mode = true;
}
}
ptr++;
}
*ptr = '\0';
newargs[argc++] = NULL;
/* We strdup each argument, but never free it, because the error messages
* contain references back to these strings. Freeing them, and reusing
* the memory, would make those error messages confusing, to say the
* least.
*/
for(i=1;i<argc;i++)
if (newargs[i])
newargs[i] = m_strdup(newargs[i]);
cipaction= NULL;
myopt((const char *const**)&newargs,cmdinfos);
if (!cipaction) badusage(_("need an action option"));
actionfunction= (void (*)(const char* const*))cipaction->farg;
actionfunction(newargs);
set_error_display(NULL, NULL);
error_unwind(ehflag_normaltidy);
}
}
/**
* Print a single package which:
* (a) is the target of one or more relevant predependencies.
* (b) has itself no unsatisfied pre-dependencies.
*
* If such a package is present output is the Packages file entry,
* which can be massaged as appropriate.
*
* Exit status:
* 0 = a package printed, OK
* 1 = no suitable package available
* 2 = error
*/
void predeppackage(const char *const *argv) {
static struct varbuf vb;
struct pkgiterator *it;
struct pkginfo *pkg = NULL, *startpkg, *trypkg;
struct dependency *dep;
struct deppossi *possi, *provider;
if (*argv)
badusage(_("--%s takes no arguments"), cipaction->olong);
modstatdb_init(admindir,msdbrw_readonly);
/* We use clientdata->istobe to detect loops. */
clear_istobes();
dep = NULL;
it = pkg_db_iter_new();
while (!dep && (pkg = pkg_db_iter_next(it))) {
/* Ignore packages user doesn't want. */
if (pkg->want != want_install)
continue;
/* Ignore packages not available. */
if (!pkg->files)
continue;
pkg->clientdata->istobe= itb_preinstall;
for (dep= pkg->available.depends; dep; dep= dep->next) {
if (dep->type != dep_predepends) continue;
if (depisok(dep, &vb, NULL, true))
continue;
/* This will leave dep non-NULL, and so exit the loop. */
break;
}
pkg->clientdata->istobe= itb_normal;
/* If dep is NULL we go and get the next package. */
}
pkg_db_iter_free(it);
if (!dep)
exit(1); /* Not found. */
assert(pkg);
startpkg= pkg;
pkg->clientdata->istobe= itb_preinstall;
/* OK, we have found an unsatisfied predependency.
* Now go and find the first thing we need to install, as a first step
* towards satisfying it. */
do {
/* We search for a package which would satisfy dep, and put it in pkg. */
for (possi = dep->list, pkg = NULL;
!pkg && possi;
possi=possi->next) {
trypkg= possi->ed;
if (trypkg->files && versionsatisfied(&trypkg->available,possi)) {
if (trypkg->clientdata->istobe == itb_normal) { pkg= trypkg; break; }
}
if (possi->verrel != dvr_none) continue;
for (provider=possi->ed->available.depended;
!pkg && provider;
provider=provider->next) {
if (provider->up->type != dep_provides) continue;
trypkg= provider->up->up;
if (!trypkg->files)
continue;
if (trypkg->clientdata->istobe == itb_normal) { pkg= trypkg; break; }
}
}
if (!pkg) {
varbufreset(&vb);
describedepcon(&vb,dep);
varbufaddc(&vb,0);
fprintf(stderr, _("dpkg: cannot see how to satisfy pre-dependency:\n %s\n"),vb.buf);
ohshit(_("cannot satisfy pre-dependencies for %.250s (wanted due to %.250s)"),
dep->up->name,startpkg->name);
}
pkg->clientdata->istobe= itb_preinstall;
for (dep= pkg->available.depends; dep; dep= dep->next) {
if (dep->type != dep_predepends) continue;
if (depisok(dep, &vb, NULL, true))
continue;
/* This will leave dep non-NULL, and so exit the loop. */
break;
}
} while (dep);
/* OK, we've found it - pkg has no unsatisfied pre-dependencies! */
writerecord(stdout, _("<standard output>"), pkg, &pkg->available);
m_output(stdout, _("<standard output>"));
}
/*
* *whynot must already have been initialized; it need not be
* empty though - it will be reset before use.
*
* If depisok returns false for ‘not OK’ it will contain a description,
* newline-terminated BUT NOT NUL-TERMINATED, of the reason.
*
* If depisok returns true it will contain garbage.
* allowunconfigd should be non-zero during the ‘Pre-Depends’ checking
* before a package is unpacked, when it is sufficient for the package
* to be unpacked provided that both the unpacked and previously-configured
* versions are acceptable.
*
* On false return (‘not OK’), *canfixbyremove refers to a package which
* if removed (dep_conflicts) or deconfigured (dep_breaks) will fix
* the problem. Caller may pass NULL for canfixbyremove and need not
* initialize *canfixbyremove.
*/
bool
depisok(struct dependency *dep, struct varbuf *whynot,
struct pkginfo **canfixbyremove, bool allowunconfigd)
{
struct deppossi *possi;
struct deppossi *provider;
int nconflicts;
/* Use this buffer so that when internationalisation comes along we
* don't have to rewrite the code completely, only redo the sprintf strings
* (assuming we have the fancy argument-number-specifiers).
* Allow 250x3 for package names, versions, &c, + 250 for ourselves. */
char linebuf[1024];
assert(dep->type == dep_depends || dep->type == dep_predepends ||
dep->type == dep_breaks || dep->type == dep_conflicts ||
dep->type == dep_recommends || dep->type == dep_suggests ||
dep->type == dep_enhances);
if (canfixbyremove)
*canfixbyremove = NULL;
/* The dependency is always OK if we're trying to remove the depend*ing*
* package. */
switch (dep->up->clientdata->istobe) {
case itb_remove: case itb_deconfigure:
return true;
case itb_normal:
/* Only installed packages can be make dependency problems. */
switch (dep->up->status) {
case stat_installed:
case stat_triggerspending:
case stat_triggersawaited:
break;
case stat_notinstalled: case stat_configfiles: case stat_halfinstalled:
case stat_halfconfigured: case stat_unpacked:
return true;
default:
internerr("unknown status depending '%d'", dep->up->status);
}
break;
case itb_installnew: case itb_preinstall:
break;
default:
internerr("unknown istobe depending '%d'", dep->up->clientdata->istobe);
}
/* Describe the dependency, in case we have to moan about it. */
varbufreset(whynot);
varbufaddc(whynot, ' ');
describedepcon(whynot, dep);
varbufaddc(whynot,'\n');
/* TODO: Check dep_enhances as well. */
if (dep->type == dep_depends || dep->type == dep_predepends ||
dep->type == dep_recommends || dep->type == dep_suggests ) {
/* Go through the alternatives. As soon as we find one that
* we like, we return ‘true’ straight away. Otherwise, when we get to
* the end we'll have accumulated all the reasons in whynot and
* can return ‘false’. */
for (possi= dep->list; possi; possi= possi->next) {
switch (possi->ed->clientdata->istobe) {
case itb_remove:
sprintf(linebuf,_(" %.250s is to be removed.\n"),possi->ed->name);
break;
case itb_deconfigure:
sprintf(linebuf,_(" %.250s is to be deconfigured.\n"),possi->ed->name);
break;
case itb_installnew:
if (versionsatisfied(&possi->ed->available, possi))
return true;
sprintf(linebuf,_(" %.250s is to be installed, but is version %.250s.\n"),
possi->ed->name,
versiondescribe(&possi->ed->available.version,vdew_nonambig));
break;
case itb_normal: case itb_preinstall:
switch (possi->ed->status) {
case stat_installed:
case stat_triggerspending:
if (versionsatisfied(&possi->ed->installed, possi))
return true;
sprintf(linebuf,_(" %.250s is installed, but is version %.250s.\n"),
possi->ed->name,
versiondescribe(&possi->ed->installed.version,vdew_nonambig));
break;
case stat_notinstalled:
/* Don't say anything about this yet - it might be a virtual package.
* Later on, if nothing has put anything in linebuf, we know that it
* isn't and issue a diagnostic then. */
*linebuf = '\0';
break;
case stat_unpacked:
case stat_halfconfigured:
case stat_triggersawaited:
if (allowunconfigd) {
if (!informativeversion(&possi->ed->configversion)) {
sprintf(linebuf, _(" %.250s is unpacked, but has never been configured.\n"),
possi->ed->name);
break;
} else if (!versionsatisfied(&possi->ed->installed, possi)) {
sprintf(linebuf, _(" %.250s is unpacked, but is version %.250s.\n"),
possi->ed->name,
versiondescribe(&possi->ed->available.version,vdew_nonambig));
break;
} else if (!versionsatisfied3(&possi->ed->configversion,
&possi->version,possi->verrel)) {
sprintf(linebuf, _(" %.250s latest configured version is %.250s.\n"),
possi->ed->name,
versiondescribe(&possi->ed->configversion,vdew_nonambig));
break;
} else {
return true;
}
}
/* Fall through. */
default:
sprintf(linebuf, _(" %.250s is %s.\n"),
possi->ed->name, gettext(statusstrings[possi->ed->status]));
break;
}
break;
default:
internerr("unknown istobe depended '%d'", possi->ed->clientdata->istobe);
}
varbufaddstr(whynot, linebuf);
/* If there was no version specified we try looking for Providers. */
if (possi->verrel == dvr_none) {
/* See if the package we're about to install Provides it. */
for (provider= possi->ed->available.depended;
provider;
provider = provider->rev_next) {
if (provider->up->type != dep_provides) continue;
if (provider->up->up->clientdata->istobe == itb_installnew)
return true;
}
/* Now look at the packages already on the system. */
for (provider= possi->ed->installed.depended;
provider;
provider = provider->rev_next) {
if (provider->up->type != dep_provides) continue;
switch (provider->up->up->clientdata->istobe) {
case itb_installnew:
/* Don't pay any attention to the Provides field of the
* currently-installed version of the package we're trying
* to install. We dealt with that by using the available
* information above. */
continue;
case itb_remove:
sprintf(linebuf, _(" %.250s provides %.250s but is to be removed.\n"),
provider->up->up->name, possi->ed->name);
break;
case itb_deconfigure:
sprintf(linebuf, _(" %.250s provides %.250s but is to be deconfigured.\n"),
provider->up->up->name, possi->ed->name);
break;
case itb_normal: case itb_preinstall:
if (provider->up->up->status == stat_installed)
return true;
sprintf(linebuf, _(" %.250s provides %.250s but is %s.\n"),
provider->up->up->name, possi->ed->name,
gettext(statusstrings[provider->up->up->status]));
break;
default:
internerr("unknown istobe provider '%d'",
provider->up->up->clientdata->istobe);
}
varbufaddstr(whynot, linebuf);
}
if (!*linebuf) {
/* If the package wasn't installed at all, and we haven't said
* yet why this isn't satisfied, we should say so now. */
sprintf(linebuf, _(" %.250s is not installed.\n"), possi->ed->name);
varbufaddstr(whynot, linebuf);
}
}
}
return false;
} else {
/* It's conflicts or breaks. There's only one main alternative,
* but we also have to consider Providers. We return ‘false’ as soon
* as we find something that matches the conflict, and only describe
* it then. If we get to the end without finding anything we return
* ‘true’. */
possi= dep->list;
nconflicts= 0;
if (possi->ed != possi->up->up) {
/* If the package conflicts with or breaks itself it must mean
* other packages which provide the same virtual name. We
* therefore don't look at the real package and go on to the
* virtual ones. */
switch (possi->ed->clientdata->istobe) {
case itb_remove:
break;
case itb_installnew:
if (!versionsatisfied(&possi->ed->available, possi)) break;
sprintf(linebuf, _(" %.250s (version %.250s) is to be installed.\n"),
possi->ed->name,
versiondescribe(&possi->ed->available.version,vdew_nonambig));
varbufaddstr(whynot, linebuf);
if (!canfixbyremove)
return false;
nconflicts++;
*canfixbyremove= possi->ed;
break;
case itb_deconfigure:
if (dep->type == dep_breaks)
break; /* Already deconfiguring this. */
/* Fall through. */
case itb_normal: case itb_preinstall:
switch (possi->ed->status) {
case stat_notinstalled: case stat_configfiles:
break;
case stat_halfinstalled: case stat_unpacked:
case stat_halfconfigured:
if (dep->type == dep_breaks)
break; /* No problem. */
case stat_installed:
case stat_triggerspending:
case stat_triggersawaited:
if (!versionsatisfied(&possi->ed->installed, possi)) break;
sprintf(linebuf, _(" %.250s (version %.250s) is present and %s.\n"),
possi->ed->name,
versiondescribe(&possi->ed->installed.version,vdew_nonambig),
gettext(statusstrings[possi->ed->status]));
varbufaddstr(whynot, linebuf);
if (!canfixbyremove)
return false;
nconflicts++;
*canfixbyremove= possi->ed;
}
break;
default:
internerr("unknown istobe conflict '%d'",
possi->ed->clientdata->istobe);
}
}
/* If there was no version specified we try looking for Providers. */
if (possi->verrel == dvr_none) {
/* See if the package we're about to install Provides it. */
for (provider= possi->ed->available.depended;
provider;
provider = provider->rev_next) {
if (provider->up->type != dep_provides) continue;
if (provider->up->up->clientdata->istobe != itb_installnew) continue;
if (provider->up->up == dep->up)
continue; /* Conflicts and provides the same. */
sprintf(linebuf, _(" %.250s provides %.250s and is to be installed.\n"),
provider->up->up->name, possi->ed->name);
varbufaddstr(whynot, linebuf);
/* We can't remove the one we're about to install: */
if (canfixbyremove)
*canfixbyremove = NULL;
return false;
}
/* Now look at the packages already on the system. */
for (provider= possi->ed->installed.depended;
provider;
provider = provider->rev_next) {
if (provider->up->type != dep_provides) continue;
if (provider->up->up == dep->up)
continue; /* Conflicts and provides the same. */
switch (provider->up->up->clientdata->istobe) {
case itb_installnew:
/* Don't pay any attention to the Provides field of the
* currently-installed version of the package we're trying
* to install. We dealt with that package by using the
* available information above. */
continue;
case itb_remove:
continue;
case itb_deconfigure:
if (dep->type == dep_breaks)
continue; /* Already deconfiguring. */
case itb_normal: case itb_preinstall:
switch (provider->up->up->status) {
case stat_notinstalled: case stat_configfiles:
continue;
case stat_halfinstalled: case stat_unpacked:
case stat_halfconfigured:
if (dep->type == dep_breaks)
break; /* No problem. */
case stat_installed:
case stat_triggerspending:
case stat_triggersawaited:
sprintf(linebuf,
_(" %.250s provides %.250s and is present and %s.\n"),
provider->up->up->name, possi->ed->name,
gettext(statusstrings[provider->up->up->status]));
varbufaddstr(whynot, linebuf);
if (!canfixbyremove)
return false;
nconflicts++;
*canfixbyremove= provider->up->up;
break;
}
break;
default:
internerr("unknown istobe conflict provider '%d'",
provider->up->up->clientdata->istobe);
}
}
}
if (!nconflicts)
return true;
if (nconflicts > 1)
*canfixbyremove = NULL;
return false;
} /* if (dependency) {...} else {...} */
}
void
ensure_statoverrides(void)
{
static struct varbuf vb;
struct stat stab1, stab2;
FILE *file;
char *loaded_list, *loaded_list_end, *thisline, *nextline, *ptr;
struct file_stat *fso;
struct filenamenode *fnn;
varbufreset(&vb);
varbufaddstr(&vb, admindir);
varbufaddstr(&vb, "/" STATOVERRIDEFILE);
varbufaddc(&vb, 0);
onerr_abort++;
file = fopen(vb.buf,"r");
if (!file) {
if (errno != ENOENT)
ohshite(_("failed to open statoverride file"));
if (!statoverridefile) {
onerr_abort--;
return;
}
} else {
if (fstat(fileno(file), &stab2))
ohshite(_("failed to fstat statoverride file"));
if (statoverridefile) {
if (fstat(fileno(statoverridefile), &stab1))
ohshite(_("failed to fstat previous statoverride file"));
if (stab1.st_dev == stab2.st_dev &&
stab1.st_ino == stab2.st_ino) {
fclose(file);
onerr_abort--;
return;
}
}
}
if (statoverridefile)
fclose(statoverridefile);
statoverridefile = file;
setcloexec(fileno(statoverridefile), vb.buf);
/* If the statoverride list is empty we don't need to bother
* reading it. */
if (!stab2.st_size) {
onerr_abort--;
return;
}
loaded_list = nfmalloc(stab2.st_size);
loaded_list_end = loaded_list + stab2.st_size;
fd_buf_copy(fileno(file), loaded_list, stab2.st_size,
_("statoverride file `%.250s'"), vb.buf);
thisline = loaded_list;
while (thisline < loaded_list_end) {
fso = nfmalloc(sizeof(struct file_stat));
if (!(ptr = memchr(thisline, '\n', loaded_list_end - thisline)))
ohshit(_("statoverride file is missing final newline"));
/* Where to start next time around. */
nextline = ptr + 1;
if (ptr == thisline)
ohshit(_("statoverride file contains empty line"));
*ptr = '\0';
/* Extract the uid. */
if (!(ptr = memchr(thisline, ' ', nextline - thisline)))
ohshit(_("syntax error in statoverride file"));
*ptr = '\0';
fso->uid = statdb_parse_uid(thisline);
/* Move to the next bit */
thisline = ptr + 1;
if (thisline >= loaded_list_end)
ohshit(_("unexpected end of line in statoverride file"));
/* Extract the gid */
if (!(ptr = memchr(thisline, ' ', nextline - thisline)))
ohshit(_("syntax error in statoverride file"));
*ptr = '\0';
fso->gid = statdb_parse_gid(thisline);
/* Move to the next bit */
thisline = ptr + 1;
if (thisline >= loaded_list_end)
ohshit(_("unexpected end of line in statoverride file"));
/* Extract the mode */
if (!(ptr = memchr(thisline, ' ', nextline - thisline)))
ohshit(_("syntax error in statoverride file"));
*ptr = '\0';
fso->mode = statdb_parse_mode(thisline);
/* Move to the next bit */
thisline = ptr + 1;
if (thisline >= loaded_list_end)
ohshit(_("unexpected end of line in statoverride file"));
fnn = findnamenode(thisline, 0);
if (fnn->statoverride)
ohshit(_("multiple statusoverrides present for file '%.250s'"),
thisline);
fnn->statoverride = fso;
/* Moving on.. */
thisline = nextline;
}
onerr_abort--;
}
