static void DPKG_ATTR_SENTINEL
fd_fd_filter(int fd_in, int fd_out, const char *desc, const char *delenv[],
const char *file, ...)
{
va_list args;
struct command cmd;
pid_t pid;
int i;
pid = subproc_fork();
if (pid == 0) {
if (fd_in != 0) {
m_dup2(fd_in, 0);
close(fd_in);
}
if (fd_out != 1) {
m_dup2(fd_out, 1);
close(fd_out);
}
for (i = 0; delenv[i]; i++)
unsetenv(delenv[i]);
command_init(&cmd, file, desc);
command_add_arg(&cmd, file);
va_start(args, file);
command_add_argv(&cmd, args);
va_end(args);
command_exec(&cmd);
}
subproc_reap(pid, desc, 0);
}
/**
* Pack the contents of a directory into a tarball.
*/
static void
tarball_pack(const char *dir, filenames_feed_func *tar_filenames_feeder,
time_t timestamp,
struct compress_params *tar_compress_params, int fd_out)
{
int pipe_filenames[2], pipe_tarball[2];
pid_t pid_tar, pid_comp;
/* Fork off a tar. We will feed it a list of filenames on stdin later. */
m_pipe(pipe_filenames);
m_pipe(pipe_tarball);
pid_tar = subproc_fork();
if (pid_tar == 0) {
char mtime[50];
m_dup2(pipe_filenames[0], 0);
close(pipe_filenames[0]);
close(pipe_filenames[1]);
m_dup2(pipe_tarball[1], 1);
close(pipe_tarball[0]);
close(pipe_tarball[1]);
if (chdir(dir))
ohshite(_("failed to chdir to '%.255s'"), dir);
snprintf(mtime, sizeof(mtime), "@%ld", timestamp);
execlp(TAR, "tar", "-cf", "-", "--format=gnu",
"--mtime", mtime, "--clamp-mtime",
"--null", "--no-unquote",
"--no-recursion", "-T", "-", NULL);
ohshite(_("unable to execute %s (%s)"), "tar -cf", TAR);
}
close(pipe_filenames[0]);
close(pipe_tarball[1]);
/* Of course we should not forget to compress the archive as well. */
pid_comp = subproc_fork();
if (pid_comp == 0) {
close(pipe_filenames[1]);
compress_filter(tar_compress_params, pipe_tarball[0], fd_out,
_("compressing tar member"));
exit(0);
}
close(pipe_tarball[0]);
/* All the pipes are set, now lets start feeding filenames to tar. */
tar_filenames_feeder(dir, pipe_filenames[1]);
/* All done, clean up wait for tar and <compress> to finish their job. */
close(pipe_filenames[1]);
subproc_reap(pid_comp, _("<compress> from tar -cf"), 0);
subproc_reap(pid_tar, "tar -cf", 0);
}
struct pager *
pager_spawn(const char *desc)
{
struct sigaction sa;
struct pager *pager;
const char *exec;
pager = m_calloc(1, sizeof(*pager));
pager->used = isatty(0) && isatty(1);
pager->desc = desc;
exec = pager_get_exec();
if (strcmp(exec, CAT) == 0)
pager->used = false;
if (!pager_enabled)
pager->used = false;
if (!pager->used)
return pager;
m_pipe(pager->pipe);
memset(&sa, 0, sizeof(sa));
sigemptyset(&sa.sa_mask);
sa.sa_handler = SIG_IGN;
sa.sa_flags = 0;
sigaction(SIGPIPE, &sa, &pager->sigpipe);
pager->pid = subproc_fork();
if (pager->pid == 0) {
/* Set better defaults for less if not already set. */
setenv("LESS", "-FRSXMQ", 0);
m_dup2(pager->pipe[0], 0);
close(pager->pipe[0]);
close(pager->pipe[1]);
command_shell(exec, desc);
}
pager->stdout_old = m_dup(1);
m_dup2(pager->pipe[1], 1);
close(pager->pipe[0]);
close(pager->pipe[1]);
/* Force the output to fully buffered, because originally stdout was
* a tty, so it was set as line buffered. This way we send as much as
* possible to the pager, which will handle the output by itself. */
setvbuf(stdout, NULL, _IOFBF, 0);
return pager;
}
static void
run_status_loggers(struct invoke_hook *hook_head)
{
struct invoke_hook *hook;
for (hook = hook_head; hook; hook = hook->next) {
pid_t pid;
int p[2];
m_pipe(p);
pid = subproc_fork();
if (pid == 0) {
/* Setup stdin and stdout. */
m_dup2(p[0], 0);
close(1);
close(p[0]);
close(p[1]);
command_shell(hook->command, _("status logger"));
}
close(p[0]);
statusfd_add(p[1]);
}
}
void
pager_reap(struct pager *pager)
{
if (!pager->used)
return;
m_dup2(pager->stdout_old, 1);
subproc_reap(pager->pid, pager->desc, SUBPROC_NOPIPE);
sigaction(SIGPIPE, &pager->sigpipe, NULL);
free(pager);
}
static void
file_treewalk_feed(const char *dir, int fd_out)
{
int pipefd[2];
pid_t pid;
struct file_info *fi;
struct file_info *symlist = NULL;
struct file_info *symlist_end = NULL;
m_pipe(pipefd);
pid = subproc_fork();
if (pid == 0) {
m_dup2(pipefd[1], 1);
close(pipefd[0]);
close(pipefd[1]);
if (chdir(dir))
ohshite(_("failed to chdir to `%.255s'"), dir);
execlp(FIND, "find", ".", "-path", "./" BUILDCONTROLDIR, "-prune", "-o",
"-print0", NULL);
ohshite(_("unable to execute %s (%s)"), "find", FIND);
}
close(pipefd[1]);
/* We need to reorder the files so we can make sure that symlinks
* will not appear before their target. */
while ((fi = file_info_get(dir, pipefd[0])) != NULL) {
if (S_ISLNK(fi->st.st_mode)) {
file_info_list_append(&symlist, &symlist_end, fi);
} else {
if (fd_write(fd_out, fi->fn, strlen(fi->fn) + 1) < 0)
ohshite(_("failed to write filename to tar pipe (%s)"),
_("data member"));
file_info_free(fi);
}
}
close(pipefd[0]);
subproc_wait_check(pid, "find", 0);
for (fi = symlist; fi; fi = fi->next)
if (fd_write(fd_out, fi->fn, strlen(fi->fn) + 1) < 0)
ohshite(_("failed to write filename to tar pipe (%s)"), _("data member"));
file_info_list_free(symlist);
}
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(_("unable to execute %s (%s)"),
_("package field value extraction"), BACKEND);
}
close(p[1]);
/* Parant reads from pipe. */
varbuf_reset(&buf);
fd_vbuf_copy(p[0], &buf, -1, _("package field value extraction"));
varbuf_end_str(&buf);
close(p[0]);
subproc_wait_check(pid, _("package field value 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 int
run_logger(struct invoke_hook *hook, const char *name)
{
pid_t pid;
int p[2];
m_pipe(p);
pid = subproc_fork();
if (pid == 0) {
/* Setup stdin and stdout. */
m_dup2(p[0], 0);
close(1);
close(p[0]);
close(p[1]);
command_shell(hook->command, name);
}
close(p[0]);
return p[1];
}
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
extracthalf(const char *debar, const char *dir,
enum dpkg_tar_options taroption, int admininfo)
{
struct dpkg_error err;
const char *errstr;
char versionbuf[40];
struct deb_version version;
off_t ctrllennum, memberlen = 0;
ssize_t r;
int dummy;
pid_t c1=0,c2,c3;
int p1[2], p2[2];
int p2_out;
int arfd;
struct stat stab;
char nlc;
int adminmember = -1;
bool header_done;
enum compressor_type decompressor = COMPRESSOR_TYPE_GZIP;
if (strcmp(debar, "-") == 0)
arfd = STDIN_FILENO;
else
arfd = open(debar, O_RDONLY);
if (arfd < 0)
ohshite(_("failed to read archive '%.255s'"), debar);
if (fstat(arfd, &stab))
ohshite(_("failed to fstat archive"));
r = read_line(arfd, versionbuf, strlen(DPKG_AR_MAGIC), sizeof(versionbuf) - 1);
if (r < 0)
read_fail(r, debar, _("archive magic version number"));
if (strcmp(versionbuf, DPKG_AR_MAGIC) == 0) {
ctrllennum= 0;
header_done = false;
for (;;) {
struct ar_hdr arh;
r = fd_read(arfd, &arh, sizeof(arh));
if (r != sizeof(arh))
read_fail(r, debar, _("archive member header"));
dpkg_ar_normalize_name(&arh);
if (dpkg_ar_member_is_illegal(&arh))
ohshit(_("file '%.250s' is corrupt - bad archive header magic"), debar);
memberlen = dpkg_ar_member_get_size(debar, &arh);
if (!header_done) {
char *infobuf;
if (strncmp(arh.ar_name, DEBMAGIC, sizeof(arh.ar_name)) != 0)
ohshit(_("file '%.250s' is not a debian binary archive (try dpkg-split?)"),
debar);
infobuf= m_malloc(memberlen+1);
r = fd_read(arfd, infobuf, memberlen + (memberlen & 1));
if (r != (memberlen + (memberlen & 1)))
read_fail(r, debar, _("archive information header member"));
infobuf[memberlen] = '\0';
if (strchr(infobuf, '\n') == NULL)
ohshit(_("archive has no newlines in header"));
errstr = deb_version_parse(&version, infobuf);
if (errstr)
ohshit(_("archive has invalid format version: %s"), errstr);
if (version.major != 2)
ohshit(_("archive is format version %d.%d; get a newer dpkg-deb"),
version.major, version.minor);
free(infobuf);
header_done = true;
} else if (arh.ar_name[0] == '_') {
/* Members with ‘_’ are noncritical, and if we don't understand
* them we skip them. */
if (fd_skip(arfd, memberlen + (memberlen & 1), &err) < 0)
ohshit(_("cannot skip archive member from '%s': %s"), debar, err.str);
} else {
if (strncmp(arh.ar_name, ADMINMEMBER, strlen(ADMINMEMBER)) == 0) {
const char *extension = arh.ar_name + strlen(ADMINMEMBER);
adminmember = 1;
decompressor = compressor_find_by_extension(extension);
if (decompressor != COMPRESSOR_TYPE_NONE &&
decompressor != COMPRESSOR_TYPE_GZIP &&
decompressor != COMPRESSOR_TYPE_XZ)
ohshit(_("archive '%s' uses unknown compression for member '%.*s', "
"giving up"),
debar, (int)sizeof(arh.ar_name), arh.ar_name);
} else {
if (adminmember != 1)
ohshit(_("archive '%s' has premature member '%.*s' before '%s', "
"giving up"),
debar, (int)sizeof(arh.ar_name), arh.ar_name, ADMINMEMBER);
if (strncmp(arh.ar_name, DATAMEMBER, strlen(DATAMEMBER)) == 0) {
const char *extension = arh.ar_name + strlen(DATAMEMBER);
adminmember= 0;
decompressor = compressor_find_by_extension(extension);
if (decompressor == COMPRESSOR_TYPE_UNKNOWN)
ohshit(_("archive '%s' uses unknown compression for member '%.*s', "
"giving up"),
debar, (int)sizeof(arh.ar_name), arh.ar_name);
} else {
ohshit(_("archive '%s' has premature member '%.*s' before '%s', "
"giving up"),
debar, (int)sizeof(arh.ar_name), arh.ar_name, DATAMEMBER);
}
}
if (adminmember == 1) {
if (ctrllennum != 0)
ohshit(_("archive '%.250s' contains two control members, giving up"),
debar);
ctrllennum= memberlen;
}
if (!adminmember != !admininfo) {
if (fd_skip(arfd, memberlen + (memberlen & 1), &err) < 0)
ohshit(_("cannot skip archive member from '%s': %s"), debar, err.str);
} else {
/* Yes! - found it. */
break;
}
}
}
if (admininfo >= 2) {
printf(_(" new debian package, version %d.%d.\n"
" size %jd bytes: control archive=%jd bytes.\n"),
version.major, version.minor,
(intmax_t)stab.st_size, (intmax_t)ctrllennum);
m_output(stdout, _("<standard output>"));
}
} else if (strncmp(versionbuf, "0.93", 4) == 0) {
char ctrllenbuf[40];
int l;
l = strlen(versionbuf);
if (strchr(versionbuf, '\n') == NULL)
ohshit(_("archive has no newlines in header"));
errstr = deb_version_parse(&version, versionbuf);
if (errstr)
ohshit(_("archive has invalid format version: %s"), errstr);
r = read_line(arfd, ctrllenbuf, 1, sizeof(ctrllenbuf) - 1);
if (r < 0)
read_fail(r, debar, _("archive control member size"));
if (sscanf(ctrllenbuf, "%jd%c%d", &ctrllennum, &nlc, &dummy) != 2 ||
nlc != '\n')
ohshit(_("archive has malformatted control member size '%s'"), ctrllenbuf);
if (admininfo) {
memberlen = ctrllennum;
} else {
memberlen = stab.st_size - ctrllennum - strlen(ctrllenbuf) - l;
if (fd_skip(arfd, ctrllennum, &err) < 0)
ohshit(_("cannot skip archive control member from '%s': %s"), debar,
err.str);
}
if (admininfo >= 2) {
printf(_(" old debian package, version %d.%d.\n"
" size %jd bytes: control archive=%jd, main archive=%jd.\n"),
version.major, version.minor,
(intmax_t)stab.st_size, (intmax_t)ctrllennum,
(intmax_t)(stab.st_size - ctrllennum - strlen(ctrllenbuf) - l));
m_output(stdout, _("<standard output>"));
}
} else {
if (strncmp(versionbuf, "!<arch>", 7) == 0) {
notice(_("file looks like it might be an archive which has been\n"
" corrupted by being downloaded in ASCII mode"));
}
ohshit(_("'%.255s' is not a debian format archive"), debar);
}
m_pipe(p1);
c1 = subproc_fork();
if (!c1) {
close(p1[0]);
if (fd_fd_copy(arfd, p1[1], memberlen, &err) < 0)
ohshit(_("cannot copy archive member from '%s' to decompressor pipe: %s"),
debar, err.str);
if (close(p1[1]))
ohshite(_("cannot close decompressor pipe"));
exit(0);
}
close(p1[1]);
if (taroption) {
m_pipe(p2);
p2_out = p2[1];
} else {
p2_out = 1;
}
c2 = subproc_fork();
if (!c2) {
if (taroption)
close(p2[0]);
decompress_filter(decompressor, p1[0], p2_out,
_("decompressing archive member"));
exit(0);
}
close(p1[0]);
close(arfd);
if (taroption) close(p2[1]);
if (taroption) {
c3 = subproc_fork();
if (!c3) {
struct command cmd;
command_init(&cmd, TAR, "tar");
command_add_arg(&cmd, "tar");
if ((taroption & DPKG_TAR_LIST) && (taroption & DPKG_TAR_EXTRACT))
command_add_arg(&cmd, "-xv");
else if (taroption & DPKG_TAR_EXTRACT)
command_add_arg(&cmd, "-x");
else if (taroption & DPKG_TAR_LIST)
command_add_arg(&cmd, "-tv");
else
internerr("unknown or missing tar action '%d'", taroption);
if (taroption & DPKG_TAR_PERMS)
command_add_arg(&cmd, "-p");
if (taroption & DPKG_TAR_NOMTIME)
command_add_arg(&cmd, "-m");
command_add_arg(&cmd, "-f");
command_add_arg(&cmd, "-");
command_add_arg(&cmd, "--warning=no-timestamp");
m_dup2(p2[0],0);
close(p2[0]);
unsetenv("TAR_OPTIONS");
if (dir) {
if (chdir(dir)) {
if (errno != ENOENT)
ohshite(_("failed to chdir to directory"));
if (mkdir(dir, 0777))
ohshite(_("failed to create directory"));
if (chdir(dir))
ohshite(_("failed to chdir to directory after creating it"));
}
}
command_exec(&cmd);
}
close(p2[0]);
subproc_reap(c3, "tar", 0);
}
subproc_reap(c2, _("<decompress>"), SUBPROC_NOPIPE);
if (c1 != -1)
subproc_reap(c1, _("paste"), 0);
if (version.major == 0 && admininfo) {
/* Handle the version as a float to preserve the behaviour of old code,
* because even if the format is defined to be padded by 0's that might
* not have been always true for really ancient versions... */
while (version.minor && (version.minor % 10) == 0)
version.minor /= 10;
if (version.minor == 931)
movecontrolfiles(OLDOLDDEBDIR);
else if (version.minor == 932 || version.minor == 933)
movecontrolfiles(OLDDEBDIR);
}
}
int main(int argc, char *argv[])
{
char cwd[PATH_MAX] = { '\0' };
char *dir = NULL;
enum dpkg_tar_options taroption = DPKG_TAR_EXTRACT | DPKG_TAR_NOMTIME;
int admininfo = 0;
char *debar = argv[1];
int arfd = -1;
struct stat stab;
char versionbuf[40] = { '\0' };
ssize_t r;
off_t ctrllennum, memberlen = 0;
bool header_done;
char *infobuf = NULL;
struct dpkg_error err;
const char *errstr;
struct deb_version version;
int adminmember = -1;
enum compressor_type decompressor = COMPRESSOR_TYPE_GZIP;
char nlc;
int dummy;
int p1[2], p2[2];
pid_t c1 = 0, c2, c3;
int p2_out;
if (getcwd(cwd, PATH_MAX)) {
dir = m_malloc(PATH_MAX);
snprintf(dir, PATH_MAX - 1, "%s/extract", cwd);
}
arfd = open(debar, O_RDONLY);
if (arfd < 0)
ohshite("failed to read archive %s", debar);
if (fstat(arfd, &stab))
ohshite("failed to fstat archive");
r = read_line(arfd,
versionbuf,
strlen(DPKG_AR_MAGIC),
sizeof(versionbuf) - 1);
if (r < 0)
read_fail(r, debar, "archive magic version number");
if (strcmp(versionbuf, DPKG_AR_MAGIC) == 0) {
ctrllennum = 0;
header_done = false;
for (;;) {
struct ar_hdr arh;
r = fd_read(arfd, &arh, sizeof(arh));
if (r != sizeof(arh))
read_fail(r, debar, "archive member header");
dpkg_ar_normalize_name(&arh);
if (dpkg_ar_member_is_illegal(&arh)) {
ohshit("file '%.250s' is corrupt - bad archive header magic",
debar);
}
memberlen = dpkg_ar_member_get_size(debar, &arh);
if (!header_done) {
infobuf = NULL;
if (strncmp(arh.ar_name, DEBMAGIC, sizeof(arh.ar_name)) != 0) {
ohshit("file '%.250s' is not a debian binary archive "
"(try dpkg-split?)", debar);
}
infobuf = m_malloc(memberlen + 1);
r = fd_read(arfd, infobuf, memberlen + (memberlen & 1));
if (r != (memberlen + (memberlen & 1)))
read_fail(r, debar, "archive information header member");
infobuf[memberlen] = '\0';
if (strchr(infobuf, '\n') == NULL)
ohshit("archive has no newlines in header");
errstr = deb_version_parse(&version, infobuf);
if (errstr)
ohshit("archive has invalid format version: %s", errstr);
if (version.major != 2) {
ohshit("archive is format version %d.%d; get a newer dpkg-deb",
version.major, version.minor);
}
if (infobuf) {
free(infobuf);
infobuf = NULL;
}
header_done = true;
} else if (arh.ar_name[0] == '_') {
if (fd_skip(arfd, memberlen + (memberlen & 1), &err) < 0) {
ohshit("cannot skip archive member from '%s': %s",
debar, err.str);
}
} else {
if (strncmp(arh.ar_name, ADMINMEMBER, strlen(ADMINMEMBER)) == 0) {
const char *extension = arh.ar_name + strlen(ADMINMEMBER);
adminmember = 1;
decompressor = compressor_find_by_extension(extension);
if (decompressor != COMPRESSOR_TYPE_NONE &&
decompressor != COMPRESSOR_TYPE_GZIP &&
decompressor != COMPRESSOR_TYPE_XZ) {
ohshit("ERROR: archive '%s' uses unknown compression "
"for member '%.*s', giving up",
debar, (int)sizeof(arh.ar_name), arh.ar_name);
}
} else {
if (adminmember != 1) {
ohshit("archive '%s' has premature member '%.*s' "
"before '%s', giving up",
debar, (int)sizeof(arh.ar_name), arh.ar_name,
ADMINMEMBER);
}
if (strncmp(arh.ar_name, DATAMEMBER, strlen(DATAMEMBER)) == 0) {
const char *extension = arh.ar_name + strlen(DATAMEMBER);
adminmember = 0;
decompressor = compressor_find_by_extension(extension);
if (decompressor == COMPRESSOR_TYPE_UNKNOWN) {
ohshit("archive '%s' uses unknown "
"compression for member '%.*s', giving up",
debar, (int)sizeof(arh.ar_name), arh.ar_name);
}
} else {
ohshit("archive '%s' has premature member '%.*s' "
"before '%s', giving up",
debar, (int)sizeof(arh.ar_name), arh.ar_name, DATAMEMBER);
}
}
if (adminmember == 1) {
if (ctrllennum != 0) {
ohshit("archive '%.250s' contains two control members, giving up",
debar);
}
ctrllennum = memberlen;
}
if (!adminmember != !admininfo) {
if (fd_skip(arfd, memberlen + (memberlen & 1), &err) < 0) {
ohshit("cannot skip archive member from '%s': %s",
debar, err.str);
}
} else {
break;
}
}
}
if (admininfo >= 2) {
printf(" new debian package, version %d.%d.\n"
" size %jd bytes: control archive=%jd bytes.\n",
version.major, version.minor,
(intmax_t)stab.st_size, (intmax_t)ctrllennum);
m_output(stdout, "<standard output>");
}
} else if (strncmp(versionbuf, "0.93", 4) == 0) {
char ctrllenbuf[40] = { '\0' };
int l;
l = strlen(versionbuf);
if (strchr(versionbuf, '\n') == NULL)
ohshit("archive has no newlines in header");
errstr = deb_version_parse(&version, versionbuf);
if (errstr)
ohshit("archive has invalid format version: %s", errstr);
r = read_line(arfd, ctrllenbuf, 1, sizeof(ctrllenbuf));
if (r < 0)
read_fail(r, debar, "archive control member size");
if (sscanf(ctrllenbuf, "%jd%c%d", &ctrllennum, &nlc, &dummy) != 2 ||
nlc != '\n') {
ohshit("archive has malformatted control member size '%s'",
ctrllenbuf);
}
if (admininfo) {
memberlen = ctrllennum;
} else {
memberlen = stab.st_size - ctrllennum - strlen(ctrllenbuf) - l;
if (fd_skip(arfd, ctrllennum, &err) < 0) {
ohshit("cannot skip archive control member from '%s': %s",
debar, err.str);
}
}
if (admininfo >= 2) {
printf(" old debian package, version %d.%d.\n"
" size %jd bytes: control archive=%jd, main archive=%jd.\n",
version.major, version.minor,
(intmax_t)stab.st_size, (intmax_t)ctrllennum,
(intmax_t)(stab.st_size - ctrllennum - strlen(ctrllenbuf) - l));
m_output(stdout, "<standard output>");
}
} else {
if (strncmp(versionbuf, "!<arch>", 7) == 0) {
notice("file looks like it might be an archive which has been\n"
" corrupted by being downloaded in ASCII mode");
}
ohshit("'%.255s' is not a debian format archive", debar);
}
m_pipe(p1);
c1 = subproc_fork();
if (!c1) {
close(p1[0]);
if (fd_fd_copy(arfd, p1[1], memberlen, &err) < 0)
ohshit("cannot copy archive member from '%s' to decompressor pipe: %s",
debar, err.str);
if (close(p1[1]))
ohshite("cannot close decompressor pipe");
exit(0);
}
close(p1[1]);
if (taroption) {
m_pipe(p2);
p2_out = p2[1];
} else {
p2_out = 1;
}
c2 = subproc_fork();
if (!c2) {
if (taroption)
close(p2[0]);
decompress_filter(decompressor, p1[0], p2_out,
"decompressing archive member");
exit(0);
}
close(p1[0]);
close(arfd);
if (taroption)
close(p2[1]);
if (taroption) {
c3 = subproc_fork();
if (!c3) {
struct command cmd;
command_init(&cmd, TAR, "tar");
command_add_arg(&cmd, "tar");
if ((taroption & DPKG_TAR_LIST) && (taroption & DPKG_TAR_EXTRACT))
command_add_arg(&cmd, "-xv");
else if (taroption & DPKG_TAR_EXTRACT)
command_add_arg(&cmd, "-x");
else if (taroption & DPKG_TAR_LIST)
command_add_arg(&cmd, "-tv");
else
internerr("unknown or missing tar action '%d'", taroption);
if (taroption & DPKG_TAR_PERMS)
command_add_arg(&cmd, "-p");
if (taroption & DPKG_TAR_NOMTIME)
command_add_arg(&cmd, "-m");
command_add_arg(&cmd, "-f");
command_add_arg(&cmd, "-");
command_add_arg(&cmd, "--warning=no-timestamp");
m_dup2(p2[0],0);
close(p2[0]);
unsetenv("TAR_OPTIONS");
if (dir) {
if (chdir(dir)) {
if (errno != ENOENT)
ohshite("failed to chdir to directory");
if (mkdir(dir, 0777))
ohshite("failed to create directory");
if (chdir(dir))
ohshite("failed to chdir to directory after creating it");
}
}
command_exec(&cmd);
}
close(p2[0]);
subproc_reap(c3, "tar", 0);
}
subproc_reap(c2, "<decompress>", SUBPROC_NOPIPE);
if (c1 != -1)
subproc_reap(c1, "paste", 0);
if (version.major == 0 && admininfo) {
while (version.minor && (version.minor % 10) == 0)
version.minor /= 10;
if (version.minor == 931)
movecontrolfiles(OLDOLDDEBDIR);
else if (version.minor == 932 || version.minor == 933)
movecontrolfiles(OLDDEBDIR);
}
return 0;
}
/**
* Overly complex function that builds a .deb file.
*/
int
do_build(const char *const *argv)
{
struct dpkg_error err;
const char *debar, *dir;
bool subdir;
char *tfbuf;
int arfd;
int p1[2], p2[2], gzfd;
pid_t c1, c2;
/* Decode our arguments. */
dir = *argv++;
if (!dir)
badusage(_("--%s needs a <directory> argument"), cipaction->olong);
subdir = false;
debar = *argv++;
if (debar != NULL) {
struct stat debarstab;
if (*argv)
badusage(_("--%s takes at most two arguments"), cipaction->olong);
if (stat(debar, &debarstab)) {
if (errno != ENOENT)
ohshite(_("unable to check for existence of archive `%.250s'"), debar);
} else if (S_ISDIR(debarstab.st_mode)) {
subdir = true;
}
} else {
char *m;
m= m_malloc(strlen(dir) + sizeof(DEBEXT));
strcpy(m, dir);
path_trim_slash_slashdot(m);
strcat(m, DEBEXT);
debar= m;
}
/* Perform some sanity checks on the to-be-build package. */
if (nocheckflag) {
if (subdir)
ohshit(_("target is directory - cannot skip control file check"));
warning(_("not checking contents of control area"));
printf(_("dpkg-deb: building an unknown package in '%s'.\n"), debar);
} else {
struct pkginfo *pkg;
pkg = check_new_pkg(dir);
if (subdir)
debar = pkg_get_pathname(debar, pkg);
printf(_("dpkg-deb: building package `%s' in `%s'.\n"),
pkg->set->name, debar);
}
m_output(stdout, _("<standard output>"));
/* Now that we have verified everything its time to actually
* build something. Let's start by making the ar-wrapper. */
arfd = creat(debar, 0644);
if (arfd < 0)
ohshite(_("unable to create `%.255s'"), debar);
/* Fork a tar to package the control-section of the package. */
unsetenv("TAR_OPTIONS");
m_pipe(p1);
c1 = subproc_fork();
if (!c1) {
m_dup2(p1[1],1); close(p1[0]); close(p1[1]);
if (chdir(dir))
ohshite(_("failed to chdir to `%.255s'"), dir);
if (chdir(BUILDCONTROLDIR))
ohshite(_("failed to chdir to `%.255s'"), ".../DEBIAN");
execlp(TAR, "tar", "-cf", "-", "--format=gnu", ".", NULL);
ohshite(_("unable to execute %s (%s)"), "tar -cf", TAR);
}
close(p1[1]);
/* Create a temporary file to store the control data in. Immediately
* unlink our temporary file so others can't mess with it. */
tfbuf = path_make_temp_template("dpkg-deb");
gzfd = mkstemp(tfbuf);
if (gzfd == -1)
ohshite(_("failed to make temporary file (%s)"), _("control member"));
/* Make sure it's gone, the fd will remain until we close it. */
if (unlink(tfbuf))
ohshit(_("failed to unlink temporary file (%s), %s"), _("control member"),
tfbuf);
free(tfbuf);
/* And run gzip to compress our control archive. */
c2 = subproc_fork();
if (!c2) {
struct compress_params params;
params.type = compressor_type_gzip;
params.strategy = compressor_strategy_none;
params.level = 9;
compress_filter(¶ms, p1[0], gzfd, _("compressing control member"));
exit(0);
}
close(p1[0]);
subproc_wait_check(c2, "gzip -9c", 0);
subproc_wait_check(c1, "tar -cf", 0);
if (lseek(gzfd, 0, SEEK_SET))
ohshite(_("failed to rewind temporary file (%s)"), _("control member"));
/* We have our first file for the ar-archive. Write a header for it
* to the package and insert it. */
if (deb_format.major == 0) {
struct stat controlstab;
char versionbuf[40];
if (fstat(gzfd, &controlstab))
ohshite(_("failed to stat temporary file (%s)"), _("control member"));
sprintf(versionbuf, "%-8s\n%jd\n", OLDARCHIVEVERSION,
(intmax_t)controlstab.st_size);
if (fd_write(arfd, versionbuf, strlen(versionbuf)) < 0)
ohshite(_("error writing `%s'"), debar);
if (fd_fd_copy(gzfd, arfd, -1, &err) < 0)
ohshit(_("cannot copy '%s' into archive '%s': %s"), _("control member"),
debar, err.str);
} else if (deb_format.major == 2) {
const char deb_magic[] = ARCHIVEVERSION "\n";
dpkg_ar_put_magic(debar, arfd);
dpkg_ar_member_put_mem(debar, arfd, DEBMAGIC, deb_magic, strlen(deb_magic));
dpkg_ar_member_put_file(debar, arfd, ADMINMEMBER, gzfd, -1);
} else {
internerr("unknown deb format version %d.%d", deb_format.major, deb_format.minor);
}
close(gzfd);
/* Control is done, now we need to archive the data. */
if (deb_format.major == 0) {
/* In old format, the data member is just concatenated after the
* control member, so we do not need a temporary file and can use
* the compression file descriptor. */
gzfd = arfd;
} else if (deb_format.major == 2) {
/* Start by creating a new temporary file. Immediately unlink the
* temporary file so others can't mess with it. */
tfbuf = path_make_temp_template("dpkg-deb");
gzfd = mkstemp(tfbuf);
if (gzfd == -1)
ohshite(_("failed to make temporary file (%s)"), _("data member"));
/* Make sure it's gone, the fd will remain until we close it. */
if (unlink(tfbuf))
ohshit(_("failed to unlink temporary file (%s), %s"), _("data member"),
tfbuf);
free(tfbuf);
} else {
internerr("unknown deb format version %d.%d", deb_format.major, deb_format.minor);
}
/* Fork off a tar. We will feed it a list of filenames on stdin later. */
m_pipe(p1);
m_pipe(p2);
c1 = subproc_fork();
if (!c1) {
m_dup2(p1[0],0); close(p1[0]); close(p1[1]);
m_dup2(p2[1],1); close(p2[0]); close(p2[1]);
if (chdir(dir))
ohshite(_("failed to chdir to `%.255s'"), dir);
execlp(TAR, "tar", "-cf", "-", "--format=gnu", "--null", "-T", "-", "--no-recursion", NULL);
ohshite(_("unable to execute %s (%s)"), "tar -cf", TAR);
}
close(p1[0]);
close(p2[1]);
/* Of course we should not forget to compress the archive as well. */
c2 = subproc_fork();
if (!c2) {
close(p1[1]);
compress_filter(&compress_params, p2[0], gzfd, _("compressing data member"));
exit(0);
}
close(p2[0]);
/* All the pipes are set, now lets walk the tree, and start feeding
* filenames to tar. */
file_treewalk_feed(dir, p1[1]);
/* All done, clean up wait for tar and gzip to finish their job. */
close(p1[1]);
subproc_wait_check(c2, _("<compress> from tar -cf"), 0);
subproc_wait_check(c1, "tar -cf", 0);
/* Okay, we have data.tar as well now, add it to the ar wrapper. */
if (deb_format.major == 2) {
char datamember[16 + 1];
sprintf(datamember, "%s%s", DATAMEMBER,
compressor_get_extension(compress_params.type));
if (lseek(gzfd, 0, SEEK_SET))
ohshite(_("failed to rewind temporary file (%s)"), _("data member"));
dpkg_ar_member_put_file(debar, arfd, datamember, gzfd, -1);
close(gzfd);
}
if (fsync(arfd))
ohshite(_("unable to sync file '%s'"), debar);
if (close(arfd))
ohshite(_("unable to close file '%s'"), debar);
return 0;
}
/* Overly complex function that builds a .deb file
*/
void do_build(const char *const *argv) {
static const char *const maintainerscripts[]= {
PREINSTFILE, POSTINSTFILE, PRERMFILE, POSTRMFILE, NULL
};
char *m;
const char *debar, *directory, *const *mscriptp, *versionstring, *arch;
char *controlfile, *tfbuf;
const char *envbuf;
struct pkginfo *checkedinfo;
struct arbitraryfield *field;
FILE *ar, *cf;
int p1[2],p2[2],p3[2], warns, errs, n, c, subdir, gzfd;
pid_t c1,c2,c3;
struct stat controlstab, datastab, mscriptstab, debarstab;
char conffilename[MAXCONFFILENAME+1];
time_t thetime= 0;
struct file_info *fi;
struct file_info *symlist = NULL;
struct file_info *symlist_end = NULL;
/* Decode our arguments */
directory = *argv++;
if (!directory)
badusage(_("--%s needs a <directory> argument"), cipaction->olong);
/* template for our tempfiles */
if ((envbuf= getenv("TMPDIR")) == NULL)
envbuf= P_tmpdir;
tfbuf = m_malloc(strlen(envbuf) + 13);
strcpy(tfbuf,envbuf);
strcat(tfbuf,"/dpkg.XXXXXX");
subdir= 0;
debar = *argv++;
if (debar != NULL) {
if (*argv) badusage(_("--build takes at most two arguments"));
if (debar) {
if (stat(debar,&debarstab)) {
if (errno != ENOENT)
ohshite(_("unable to check for existence of archive `%.250s'"),debar);
} else if (S_ISDIR(debarstab.st_mode)) {
subdir= 1;
}
}
} else {
m= m_malloc(strlen(directory) + sizeof(DEBEXT));
strcpy(m, directory);
path_rtrim_slash_slashdot(m);
strcat(m, DEBEXT);
debar= m;
}
/* Perform some sanity checks on the to-be-build package.
*/
if (nocheckflag) {
if (subdir)
ohshit(_("target is directory - cannot skip control file check"));
warning(_("not checking contents of control area."));
printf(_("dpkg-deb: building an unknown package in '%s'.\n"), debar);
} else {
controlfile= m_malloc(strlen(directory) + sizeof(BUILDCONTROLDIR) +
sizeof(CONTROLFILE) + sizeof(CONFFILESFILE) +
sizeof(POSTINSTFILE) + sizeof(PREINSTFILE) +
sizeof(POSTRMFILE) + sizeof(PRERMFILE) +
MAXCONFFILENAME + 5);
/* Lets start by reading in the control-file so we can check its contents */
strcpy(controlfile, directory);
strcat(controlfile, "/" BUILDCONTROLDIR "/" CONTROLFILE);
warns= 0; errs= 0;
parsedb(controlfile, pdb_recordavailable|pdb_rejectstatus,
&checkedinfo, stderr, &warns);
assert(checkedinfo->available.valid);
if (strspn(checkedinfo->name,
"abcdefghijklmnopqrstuvwxyz0123456789+-.")
!= strlen(checkedinfo->name))
ohshit(_("package name has characters that aren't lowercase alphanums or `-+.'"));
if (checkedinfo->priority == pri_other) {
warning(_("'%s' contains user-defined Priority value '%s'"),
controlfile, checkedinfo->otherpriority);
warns++;
}
for (field= checkedinfo->available.arbs; field; field= field->next) {
if (known_arbitrary_field(field))
continue;
warning(_("'%s' contains user-defined field '%s'"),
controlfile, field->name);
warns++;
}
checkversion(checkedinfo->available.version.version,
_("(upstream) version"), &errs);
checkversion(checkedinfo->available.version.revision,
_("Debian revision"), &errs);
if (errs) ohshit(_("%d errors in control file"),errs);
if (subdir) {
versionstring= versiondescribe(&checkedinfo->available.version,vdew_never);
arch= checkedinfo->available.architecture; if (!arch) arch= "";
m= m_malloc(sizeof(DEBEXT)+1+strlen(debar)+1+strlen(checkedinfo->name)+
strlen(versionstring)+1+strlen(arch));
sprintf(m,"%s/%s_%s%s%s" DEBEXT,debar,checkedinfo->name,versionstring,
arch[0] ? "_" : "", arch);
debar= m;
}
printf(_("dpkg-deb: building package `%s' in `%s'.\n"), checkedinfo->name, debar);
/* Check file permissions */
strcpy(controlfile, directory);
strcat(controlfile, "/" BUILDCONTROLDIR "/");
if (lstat(controlfile, &mscriptstab))
ohshite(_("unable to stat control directory"));
if (!S_ISDIR(mscriptstab.st_mode))
ohshit(_("control directory is not a directory"));
if ((mscriptstab.st_mode & 07757) != 0755)
ohshit(_("control directory has bad permissions %03lo (must be >=0755 "
"and <=0775)"), (unsigned long)(mscriptstab.st_mode & 07777));
for (mscriptp= maintainerscripts; *mscriptp; mscriptp++) {
strcpy(controlfile, directory);
strcat(controlfile, "/" BUILDCONTROLDIR "/");
strcat(controlfile, *mscriptp);
if (!lstat(controlfile,&mscriptstab)) {
if (S_ISLNK(mscriptstab.st_mode)) continue;
if (!S_ISREG(mscriptstab.st_mode))
ohshit(_("maintainer script `%.50s' is not a plain file or symlink"),*mscriptp);
if ((mscriptstab.st_mode & 07557) != 0555)
ohshit(_("maintainer script `%.50s' has bad permissions %03lo "
"(must be >=0555 and <=0775)"),
*mscriptp, (unsigned long)(mscriptstab.st_mode & 07777));
} else if (errno != ENOENT) {
ohshite(_("maintainer script `%.50s' is not stattable"),*mscriptp);
}
}
/* Check if conffiles contains sane information */
strcpy(controlfile, directory);
strcat(controlfile, "/" BUILDCONTROLDIR "/" CONFFILESFILE);
if ((cf= fopen(controlfile,"r"))) {
struct file_info *conffiles_head = NULL;
struct file_info *conffiles_tail = NULL;
while (fgets(conffilename,MAXCONFFILENAME+1,cf)) {
n= strlen(conffilename);
if (!n) ohshite(_("empty string from fgets reading conffiles"));
if (conffilename[n-1] != '\n') {
warning(_("conffile name '%.50s...' is too long, or missing final newline"),
conffilename);
warns++;
while ((c= getc(cf)) != EOF && c != '\n');
continue;
}
conffilename[n - 1] = '\0';
strcpy(controlfile, directory);
strcat(controlfile, "/");
strcat(controlfile, conffilename);
if (lstat(controlfile,&controlstab)) {
if (errno == ENOENT) {
if((n > 1) && isspace(conffilename[n-2]))
warning(_("conffile filename '%s' contains trailing white spaces"),
conffilename);
ohshit(_("conffile `%.250s' does not appear in package"), conffilename);
} else
ohshite(_("conffile `%.250s' is not stattable"), conffilename);
} else if (!S_ISREG(controlstab.st_mode)) {
warning(_("conffile '%s' is not a plain file"), conffilename);
warns++;
}
if (file_info_find_name(conffiles_head, conffilename))
warning(_("conffile name '%s' is duplicated"), conffilename);
else {
struct file_info *conffile;
conffile = file_info_new(conffilename);
add_to_filist(&conffiles_head, &conffiles_tail, conffile);
}
}
free_filist(conffiles_head);
if (ferror(cf)) ohshite(_("error reading conffiles file"));
fclose(cf);
} else if (errno != ENOENT) {
ohshite(_("error opening conffiles file"));
}
if (warns)
warning(_("ignoring %d warnings about the control file(s)\n"), warns);
}
m_output(stdout, _("<standard output>"));
/* Now that we have verified everything its time to actually
* build something. Lets start by making the ar-wrapper.
*/
if (!(ar=fopen(debar,"wb"))) ohshite(_("unable to create `%.255s'"),debar);
if (setvbuf(ar, NULL, _IONBF, 0))
ohshite(_("unable to unbuffer `%.255s'"), debar);
/* Fork a tar to package the control-section of the package */
unsetenv("TAR_OPTIONS");
m_pipe(p1);
if (!(c1= m_fork())) {
m_dup2(p1[1],1); close(p1[0]); close(p1[1]);
if (chdir(directory)) ohshite(_("failed to chdir to `%.255s'"),directory);
if (chdir(BUILDCONTROLDIR)) ohshite(_("failed to chdir to .../DEBIAN"));
execlp(TAR, "tar", "-cf", "-", "--format=gnu", ".", NULL);
ohshite(_("failed to exec tar -cf"));
}
close(p1[1]);
/* Create a temporary file to store the control data in. Immediately unlink
* our temporary file so others can't mess with it.
*/
if ((gzfd= mkstemp(tfbuf)) == -1) ohshite(_("failed to make tmpfile (control)"));
/* make sure it's gone, the fd will remain until we close it */
if (unlink(tfbuf)) ohshit(_("failed to unlink tmpfile (control), %s"),
tfbuf);
/* reset this, so we can use it elsewhere */
strcpy(tfbuf,envbuf);
strcat(tfbuf,"/dpkg.XXXXXX");
/* And run gzip to compress our control archive */
if (!(c2= m_fork())) {
m_dup2(p1[0],0); m_dup2(gzfd,1); close(p1[0]); close(gzfd);
compress_cat(compress_type_gzip, 0, 1, "9", _("control"));
}
close(p1[0]);
waitsubproc(c2,"gzip -9c",0);
waitsubproc(c1,"tar -cf",0);
if (fstat(gzfd,&controlstab)) ohshite(_("failed to fstat tmpfile (control)"));
/* We have our first file for the ar-archive. Write a header for it to the
* package and insert it.
*/
if (oldformatflag) {
if (fprintf(ar, "%-8s\n%ld\n", OLDARCHIVEVERSION, (long)controlstab.st_size) == EOF)
werr(debar);
} else {
thetime = time(NULL);
if (fprintf(ar,
"!<arch>\n"
"debian-binary %-12lu0 0 100644 %-10ld`\n"
ARCHIVEVERSION "\n"
"%s"
ADMINMEMBER "%-12lu0 0 100644 %-10ld`\n",
thetime,
(long)sizeof(ARCHIVEVERSION),
(sizeof(ARCHIVEVERSION)&1) ? "\n" : "",
(unsigned long)thetime,
(long)controlstab.st_size) == EOF)
werr(debar);
}
if (lseek(gzfd,0,SEEK_SET)) ohshite(_("failed to rewind tmpfile (control)"));
fd_fd_copy(gzfd, fileno(ar), -1, _("control"));
/* Control is done, now we need to archive the data. Start by creating
* a new temporary file. Immediately unlink the temporary file so others
* can't mess with it. */
if (!oldformatflag) {
close(gzfd);
if ((gzfd= mkstemp(tfbuf)) == -1) ohshite(_("failed to make tmpfile (data)"));
/* make sure it's gone, the fd will remain until we close it */
if (unlink(tfbuf)) ohshit(_("failed to unlink tmpfile (data), %s"),
tfbuf);
/* reset these, in case we want to use the later */
strcpy(tfbuf,envbuf);
strcat(tfbuf,"/dpkg.XXXXXX");
}
/* Fork off a tar. We will feed it a list of filenames on stdin later.
*/
m_pipe(p1);
m_pipe(p2);
if (!(c1= m_fork())) {
m_dup2(p1[0],0); close(p1[0]); close(p1[1]);
m_dup2(p2[1],1); close(p2[0]); close(p2[1]);
if (chdir(directory)) ohshite(_("failed to chdir to `%.255s'"),directory);
execlp(TAR, "tar", "-cf", "-", "--format=gnu", "--null", "-T", "-", "--no-recursion", NULL);
ohshite(_("failed to exec tar -cf"));
}
close(p1[0]);
close(p2[1]);
/* Of course we should not forget to compress the archive as well.. */
if (!(c2= m_fork())) {
close(p1[1]);
m_dup2(p2[0],0); close(p2[0]);
m_dup2(oldformatflag ? fileno(ar) : gzfd,1);
compress_cat(compress_type, 0, 1, compression, _("data"));
}
close(p2[0]);
/* All the pipes are set, now lets run find, and start feeding
* filenames to tar.
*/
m_pipe(p3);
if (!(c3= m_fork())) {
m_dup2(p3[1],1); close(p3[0]); close(p3[1]);
if (chdir(directory)) ohshite(_("failed to chdir to `%.255s'"),directory);
execlp(FIND, "find", ".", "-path", "./" BUILDCONTROLDIR, "-prune", "-o",
"-print0", NULL);
ohshite(_("failed to exec find"));
}
close(p3[1]);
/* We need to reorder the files so we can make sure that symlinks
* will not appear before their target.
*/
while ((fi=getfi(directory, p3[0]))!=NULL)
if (S_ISLNK(fi->st.st_mode))
add_to_filist(&symlist, &symlist_end, fi);
else {
if (write(p1[1], fi->fn, strlen(fi->fn)+1) ==- 1)
ohshite(_("failed to write filename to tar pipe (data)"));
}
close(p3[0]);
waitsubproc(c3,"find",0);
for (fi= symlist;fi;fi= fi->next)
if (write(p1[1], fi->fn, strlen(fi->fn)+1) == -1)
ohshite(_("failed to write filename to tar pipe (data)"));
/* All done, clean up wait for tar and gzip to finish their job */
close(p1[1]);
free_filist(symlist);
waitsubproc(c2, _("<compress> from tar -cf"), 0);
waitsubproc(c1,"tar -cf",0);
/* Okay, we have data.tar.gz as well now, add it to the ar wrapper */
if (!oldformatflag) {
const char *datamember;
switch (compress_type) {
case compress_type_gzip:
datamember = DATAMEMBER_GZ;
break;
case compress_type_bzip2:
datamember = DATAMEMBER_BZ2;
break;
case compress_type_lzma:
datamember = DATAMEMBER_LZMA;
break;
case compress_type_cat:
datamember = DATAMEMBER_CAT;
break;
default:
internerr("unkown compress_type '%i'", compress_type);
}
if (fstat(gzfd, &datastab))
ohshite(_("failed to fstat tmpfile (data)"));
if (fprintf(ar,
"%s"
"%s" "%-12lu0 0 100644 %-10ld`\n",
(controlstab.st_size & 1) ? "\n" : "",
datamember,
(unsigned long)thetime,
(long)datastab.st_size) == EOF)
werr(debar);
if (lseek(gzfd,0,SEEK_SET)) ohshite(_("failed to rewind tmpfile (data)"));
fd_fd_copy(gzfd, fileno(ar), -1, _("cat (data)"));
if (datastab.st_size & 1)
if (putc('\n',ar) == EOF)
werr(debar);
}
if (fclose(ar)) werr(debar);
exit(0);
}
void extracthalf(const char *debar, const char *directory,
const char *taroption, int admininfo) {
char versionbuf[40];
float versionnum;
char ctrllenbuf[40], *infobuf;
size_t ctrllennum, memberlen= 0;
int dummy, l= 0;
pid_t c1=0,c2,c3;
void *ctrlarea = NULL;
int p1[2], p2[2];
FILE *ar, *pi;
struct stat stab;
char nlc;
char *cur;
struct ar_hdr arh;
int readfromfd, oldformat= 0, header_done, adminmember;
enum compress_type compress_type = compress_type_gzip;
ar= fopen(debar,"r"); if (!ar) ohshite(_("failed to read archive `%.255s'"),debar);
if (fstat(fileno(ar),&stab)) ohshite(_("failed to fstat archive"));
if (!fgets(versionbuf,sizeof(versionbuf),ar)) readfail(ar,debar,_("version number"));
if (!strcmp(versionbuf,"!<arch>\n")) {
oldformat= 0;
ctrllennum= 0;
header_done= 0;
for (;;) {
if (fread(&arh,1,sizeof(arh),ar) != sizeof(arh))
readfail(ar,debar,_("between members"));
if (memcmp(arh.ar_fmag,ARFMAG,sizeof(arh.ar_fmag)))
ohshit(_("file `%.250s' is corrupt - bad magic at end of first header"),debar);
memberlen= parseheaderlength(arh.ar_size,sizeof(arh.ar_size),
debar, _("member length"));
if (!header_done) {
if (memcmp(arh.ar_name,"debian-binary ",sizeof(arh.ar_name)) &&
memcmp(arh.ar_name,"debian-binary/ ",sizeof(arh.ar_name)))
ohshit(_("file `%.250s' is not a debian binary archive (try dpkg-split?)"),debar);
infobuf= m_malloc(memberlen+1);
if (fread(infobuf,1, memberlen + (memberlen&1), ar) != memberlen + (memberlen&1))
readfail(ar,debar,_("header info member"));
infobuf[memberlen] = '\0';
cur= strchr(infobuf,'\n');
if (!cur) ohshit(_("archive has no newlines in header"));
*cur = '\0';
cur= strchr(infobuf,'.');
if (!cur) ohshit(_("archive has no dot in version number"));
*cur = '\0';
if (strcmp(infobuf,"2"))
ohshit(_("archive version %.250s not understood, get newer dpkg-deb"), infobuf);
*cur= '.';
strncpy(versionbuf,infobuf,sizeof(versionbuf));
versionbuf[sizeof(versionbuf) - 1] = '\0';
header_done= 1;
} else if (arh.ar_name[0] == '_') {
/* Members with `_' are noncritical, and if we don't understand them
* we skip them.
*/
stream_null_copy(ar, memberlen + (memberlen&1),_("skipped member data from %s"), debar);
} else {
adminmember=
(!memcmp(arh.ar_name,ADMINMEMBER,sizeof(arh.ar_name)) ||
!memcmp(arh.ar_name,ADMINMEMBER_COMPAT,sizeof(arh.ar_name))) ? 1 : -1;
if (adminmember == -1) {
if (!memcmp(arh.ar_name,DATAMEMBER_GZ,sizeof(arh.ar_name)) ||
!memcmp(arh.ar_name,DATAMEMBER_COMPAT_GZ,sizeof(arh.ar_name))) {
adminmember= 0;
compress_type = compress_type_gzip;
} else if (!memcmp(arh.ar_name,DATAMEMBER_BZ2,sizeof(arh.ar_name)) ||
!memcmp(arh.ar_name,DATAMEMBER_COMPAT_BZ2,sizeof(arh.ar_name))) {
adminmember= 0;
compress_type = compress_type_bzip2;
} else if (!memcmp(arh.ar_name, DATAMEMBER_LZMA, sizeof(arh.ar_name)) ||
!memcmp(arh.ar_name, DATAMEMBER_COMPAT_LZMA, sizeof(arh.ar_name))) {
adminmember = 0;
compress_type = compress_type_lzma;
} else if (!memcmp(arh.ar_name,DATAMEMBER_CAT,sizeof(arh.ar_name)) ||
!memcmp(arh.ar_name,DATAMEMBER_COMPAT_CAT,sizeof(arh.ar_name))) {
adminmember= 0;
compress_type = compress_type_cat;
} else {
ohshit(_("file `%.250s' contains ununderstood data member %.*s, giving up"),
debar, (int)sizeof(arh.ar_name), arh.ar_name);
}
}
if (adminmember == 1) {
if (ctrllennum != 0)
ohshit(_("file `%.250s' contains two control members, giving up"), debar);
ctrllennum= memberlen;
}
if (!adminmember != !admininfo) {
stream_null_copy(ar, memberlen + (memberlen&1),_("skipped member data from %s"), debar);
} else {
break; /* Yes ! - found it. */
}
}
}
if (admininfo >= 2) {
printf(_(" new debian package, version %s.\n"
" size %ld bytes: control archive= %zi bytes.\n"),
versionbuf, (long)stab.st_size, ctrllennum);
m_output(stdout, _("<standard output>"));
}
} else if (!strncmp(versionbuf,"0.93",4) &&
sscanf(versionbuf,"%f%c%d",&versionnum,&nlc,&dummy) == 2 &&
nlc == '\n') {
oldformat= 1;
l = strlen(versionbuf);
if (l && versionbuf[l - 1] == '\n')
versionbuf[l - 1] = '\0';
if (!fgets(ctrllenbuf,sizeof(ctrllenbuf),ar))
readfail(ar, debar, _("control information length"));
if (sscanf(ctrllenbuf,"%zi%c%d",&ctrllennum,&nlc,&dummy) !=2 || nlc != '\n')
ohshit(_("archive has malformatted control length `%s'"), ctrllenbuf);
if (admininfo >= 2) {
printf(_(" old debian package, version %s.\n"
" size %ld bytes: control archive= %zi, main archive= %ld.\n"),
versionbuf, (long)stab.st_size, ctrllennum,
(long) (stab.st_size - ctrllennum - strlen(ctrllenbuf) - l));
m_output(stdout, _("<standard output>"));
}
ctrlarea = m_malloc(ctrllennum);
errno=0; if (fread(ctrlarea,1,ctrllennum,ar) != ctrllennum)
readfail(ar, debar, _("control area"));
} else {
if (!strncmp(versionbuf,"!<arch>",7)) {
fprintf(stderr,
_("dpkg-deb: file looks like it might be an archive which has been\n"
"dpkg-deb: corrupted by being downloaded in ASCII mode\n"));
}
ohshit(_("`%.255s' is not a debian format archive"),debar);
}
safe_fflush(ar);
if (oldformat) {
if (admininfo) {
m_pipe(p1);
if (!(c1= m_fork())) {
close(p1[0]);
pi = fdopen(p1[1], "w");
if (!pi)
ohshite(_("failed to open pipe descriptor `1' in paste"));
errno=0; if (fwrite(ctrlarea,1,ctrllennum,pi) != ctrllennum)
ohshit(_("failed to write to gzip -dc"));
if (fclose(pi)) ohshit(_("failed to close gzip -dc"));
exit(0);
}
close(p1[1]);
readfromfd= p1[0];
} else {
if (lseek(fileno(ar),l+strlen(ctrllenbuf)+ctrllennum,SEEK_SET) == -1)
ohshite(_("failed to syscall lseek to files archive portion"));
c1= -1;
readfromfd= fileno(ar);
}
} else {
m_pipe(p1);
if (!(c1= m_fork())) {
close(p1[0]);
stream_fd_copy(ar, p1[1], memberlen, _("failed to write to pipe in copy"));
if (close(p1[1]) == EOF) ohshite(_("failed to close pipe in copy"));
exit(0);
}
close(p1[1]);
readfromfd= p1[0];
}
if (taroption) m_pipe(p2);
if (!(c2= m_fork())) {
m_dup2(readfromfd,0);
if (admininfo) close(p1[0]);
if (taroption) { m_dup2(p2[1],1); close(p2[0]); close(p2[1]); }
decompress_cat(compress_type, 0, 1, _("data"));
}
if (readfromfd != fileno(ar)) close(readfromfd);
if (taroption) close(p2[1]);
if (taroption && directory) {
if (chdir(directory)) {
if (errno == ENOENT) {
if (mkdir(directory,0777)) ohshite(_("failed to create directory"));
if (chdir(directory)) ohshite(_("failed to chdir to directory after creating it"));
} else {
ohshite(_("failed to chdir to directory"));
}
}
}
if (taroption) {
if (!(c3= m_fork())) {
char buffer[30+2];
if (strlen(taroption) > 30)
internerr("taroption is too long '%s'", taroption);
strcpy(buffer, taroption);
strcat(buffer, "f");
m_dup2(p2[0],0);
close(p2[0]);
unsetenv("TAR_OPTIONS");
execlp(TAR, "tar", buffer, "-", NULL);
ohshite(_("failed to exec tar"));
}
close(p2[0]);
waitsubproc(c3,"tar",0);
}
waitsubproc(c2, _("<decompress>"), PROCPIPE);
if (c1 != -1)
waitsubproc(c1, _("paste"), 0);
if (oldformat && admininfo) {
if (versionnum == 0.931F) {
movecontrolfiles(OLDOLDDEBDIR);
} else if (versionnum == 0.932F || versionnum == 0.933F) {
movecontrolfiles(OLDDEBDIR);
}
}
}
void process_archive(const char *filename) {
static const struct tar_operations tf = {
.read = tarfileread,
.extract_file = tarobject,
.link = tarobject,
.symlink = tarobject,
.mkdir = tarobject,
.mknod = tarobject,
};
/* These need to be static so that we can pass their addresses to
* push_cleanup as arguments to the cu_xxx routines; if an error occurs
* we unwind the stack before processing the cleanup list, and these
* variables had better still exist ... */
static int p1[2];
static char *cidir = NULL;
static struct fileinlist *newconffiles, *newfileslist;
static enum pkgstatus oldversionstatus;
static struct varbuf depprobwhy;
static struct tarcontext tc;
int r, i;
pid_t pid;
struct pkgiterator *it;
struct pkginfo *pkg, *otherpkg;
char *cidirrest, *p;
char conffilenamebuf[MAXCONFFILENAME];
char *psize;
const char *pfilename;
struct fileinlist *newconff, **newconffileslastp;
struct fileinlist *cfile;
struct reversefilelistiter rlistit;
struct conffile *searchconff, **iconffileslastp, *newiconff;
struct dependency *dsearch, *newdeplist, **newdeplistlastp;
struct dependency *newdep, *dep, *providecheck;
struct deppossi *psearch, **newpossilastp, *possi, *newpossi, *pdep;
FILE *conff;
struct filenamenode *namenode;
struct stat stab, oldfs;
struct pkg_deconf_list *deconpil, *deconpiltemp;
struct pkginfo *fixbytrigaw;
cleanup_pkg_failed= cleanup_conflictor_failed= 0;
pfilename = summarize_filename(filename);
if (stat(filename,&stab)) ohshite(_("cannot access archive"));
/* We can't ‘tentatively-reassemble’ packages. */
if (!f_noact) {
if (!deb_reassemble(&filename, &pfilename))
return;
}
/* Verify the package. */
if (!f_nodebsig)
deb_verify(filename);
/* Get the control information directory. */
cidir = get_control_dir(cidir);
cidirrest = cidir + strlen(cidir);
push_cleanup(cu_cidir, ~0, NULL, 0, 2, (void *)cidir, (void *)cidirrest);
pid = subproc_fork();
if (pid == 0) {
cidirrest[-1] = '\0';
execlp(BACKEND, BACKEND, "--control", filename, cidir, NULL);
ohshite(_("unable to execute %s (%s)"),
_("package control information extraction"), BACKEND);
}
subproc_wait_check(pid, BACKEND " --control", 0);
/* We want to guarantee the extracted files are on the disk, so that the
* subsequent renames to the info database do not end up with old or zero
* length files in case of a system crash. As neither dpkg-deb nor tar do
* explicit fsync()s, we have to do them here.
* XXX: This could be avoided by switching to an internal tar extractor. */
dir_sync_contents(cidir);
strcpy(cidirrest,CONTROLFILE);
parsedb(cidir, pdb_parse_binary | pdb_ignorefiles | parsedb_force_flags(),
&pkg);
if (!pkg->files) {
pkg->files= nfmalloc(sizeof(struct filedetails));
pkg->files->next = NULL;
pkg->files->name = pkg->files->msdosname = pkg->files->md5sum = NULL;
}
/* Always nfmalloc. Otherwise, we may overwrite some other field (like
* md5sum). */
psize = nfmalloc(30);
sprintf(psize, "%jd", (intmax_t)stab.st_size);
pkg->files->size = psize;
if (cipaction->arg_int == act_avail) {
printf(_("Recorded info about %s from %s.\n"),
pkgbin_name(pkg, &pkg->available, pnaw_nonambig), pfilename);
pop_cleanup(ehflag_normaltidy);
return;
}
if (pkg->available.arch->type != arch_all &&
pkg->available.arch->type != arch_native)
forcibleerr(fc_architecture,
_("package architecture (%s) does not match system (%s)"),
pkg->available.arch->name, dpkg_arch_get(arch_native)->name);
for (deconpil= deconfigure;
deconpil;
deconpil= deconpiltemp) {
deconpiltemp= deconpil->next;
free(deconpil);
}
deconfigure = NULL;
clear_istobes();
if (!wanttoinstall(pkg)) {
pop_cleanup(ehflag_normaltidy);
return;
}
/* Check if anything is installed that we conflict with, or not installed
* that we need. */
pkg->clientdata->istobe= itb_installnew;
for (dsearch= pkg->available.depends; dsearch; dsearch= dsearch->next) {
switch (dsearch->type) {
case dep_conflicts:
/* Look for things we conflict with. */
check_conflict(dsearch, pkg, pfilename);
break;
case dep_breaks:
/* Look for things we break. */
check_breaks(dsearch, pkg, pfilename);
break;
case dep_provides:
/* Look for things that conflict with what we provide. */
for (psearch = dsearch->list->ed->depended.installed;
psearch;
psearch = psearch->rev_next) {
if (psearch->up->type != dep_conflicts)
continue;
check_conflict(psearch->up, pkg, pfilename);
}
break;
case dep_suggests:
case dep_recommends:
case dep_depends:
case dep_replaces:
case dep_enhances:
/* Ignore these here. */
break;
case dep_predepends:
if (!depisok(dsearch, &depprobwhy, NULL, &fixbytrigaw, true)) {
if (fixbytrigaw) {
while (fixbytrigaw->trigaw.head)
trigproc(fixbytrigaw->trigaw.head->pend);
} else {
varbuf_end_str(&depprobwhy);
fprintf(stderr, _("dpkg: regarding %s containing %s, pre-dependency problem:\n%s"),
pfilename, pkgbin_name(pkg, &pkg->available, pnaw_nonambig),
depprobwhy.buf);
if (!force_depends(dsearch->list))
ohshit(_("pre-dependency problem - not installing %.250s"),
pkgbin_name(pkg, &pkg->available, pnaw_nonambig));
warning(_("ignoring pre-dependency problem!"));
}
}
}
}
/* Look for things that conflict with us. */
for (psearch = pkg->set->depended.installed; psearch; psearch = psearch->rev_next) {
if (psearch->up->type != dep_conflicts) continue;
check_conflict(psearch->up, pkg, pfilename);
}
ensure_allinstfiles_available();
filesdbinit();
trig_file_interests_ensure();
if (pkg->status != stat_notinstalled && pkg->status != stat_configfiles) {
printf(_("Preparing to replace %s %s (using %s) ...\n"),
pkg_name(pkg, pnaw_nonambig),
versiondescribe(&pkg->installed.version,vdew_nonambig),
pfilename);
log_action("upgrade", pkg, &pkg->installed);
} else {
printf(_("Unpacking %s (from %s) ...\n"),
pkgbin_name(pkg, &pkg->available, pnaw_nonambig), pfilename);
log_action("install", pkg, &pkg->available);
}
if (f_noact) {
pop_cleanup(ehflag_normaltidy);
return;
}
/*
* OK, we're going ahead.
*/
trig_activate_packageprocessing(pkg);
strcpy(cidirrest, TRIGGERSCIFILE);
trig_parse_ci(cidir, NULL, trig_cicb_statuschange_activate, pkg, &pkg->available);
/* Read the conffiles, and copy the hashes across. */
newconffiles = NULL;
newconffileslastp = &newconffiles;
push_cleanup(cu_fileslist, ~0, NULL, 0, 0);
strcpy(cidirrest,CONFFILESFILE);
conff= fopen(cidir,"r");
if (conff) {
push_cleanup(cu_closestream, ehflag_bombout, NULL, 0, 1, (void *)conff);
while (fgets(conffilenamebuf,MAXCONFFILENAME-2,conff)) {
struct filepackages_iterator *iter;
p= conffilenamebuf + strlen(conffilenamebuf);
assert(p != conffilenamebuf);
if (p[-1] != '\n')
ohshit(_("name of conffile (starting `%.250s') is too long (>%d characters)"),
conffilenamebuf, MAXCONFFILENAME);
while (p > conffilenamebuf && isspace(p[-1])) --p;
if (p == conffilenamebuf) continue;
*p = '\0';
namenode= findnamenode(conffilenamebuf, 0);
namenode->oldhash= NEWCONFFILEFLAG;
newconff= newconff_append(&newconffileslastp, namenode);
/* Let's see if any packages have this file. If they do we
* check to see if they listed it as a conffile, and if they did
* we copy the hash across. Since (for plain file conffiles,
* which is the only kind we are supposed to have) there will
* only be one package which ‘has’ the file, this will usually
* mean we only look in the package which we're installing now.
* The ‘conffiles’ data in the status file is ignored when a
* package isn't also listed in the file ownership database as
* having that file. If several packages are listed as owning
* the file we pick one at random. */
searchconff = NULL;
iter = filepackages_iter_new(newconff->namenode);
while ((otherpkg = filepackages_iter_next(iter))) {
debug(dbg_conffdetail,
"process_archive conffile `%s' in package %s - conff ?",
newconff->namenode->name, pkg_name(otherpkg, pnaw_nonambig));
for (searchconff = otherpkg->installed.conffiles;
searchconff && strcmp(newconff->namenode->name, searchconff->name);
searchconff = searchconff->next)
debug(dbg_conffdetail,
"process_archive conffile `%s' in package %s - conff ? not `%s'",
newconff->namenode->name, pkg_name(otherpkg, pnaw_nonambig),
searchconff->name);
if (searchconff) {
debug(dbg_conff,
"process_archive conffile `%s' package=%s %s hash=%s",
newconff->namenode->name, pkg_name(otherpkg, pnaw_nonambig),
otherpkg == pkg ? "same" : "different!",
searchconff->hash);
if (otherpkg == pkg)
break;
}
}
filepackages_iter_free(iter);
if (searchconff) {
newconff->namenode->oldhash= searchconff->hash;
/* We don't copy ‘obsolete’; it's not obsolete in the new package. */
} else {
debug(dbg_conff,"process_archive conffile `%s' no package, no hash",
newconff->namenode->name);
}
newconff->namenode->flags |= fnnf_new_conff;
}
if (ferror(conff)) ohshite(_("read error in %.250s"),cidir);
pop_cleanup(ehflag_normaltidy); /* conff = fopen() */
if (fclose(conff)) ohshite(_("error closing %.250s"),cidir);
} else {
if (errno != ENOENT) ohshite(_("error trying to open %.250s"),cidir);
}
/* All the old conffiles are marked with a flag, so that we don't delete
* them if they seem to disappear completely. */
oldconffsetflags(pkg->installed.conffiles);
for (i = 0 ; i < cflict_index ; i++) {
oldconffsetflags(conflictor[i]->installed.conffiles);
}
oldversionstatus= pkg->status;
assert(oldversionstatus <= stat_installed);
debug(dbg_general,"process_archive oldversionstatus=%s",
statusstrings[oldversionstatus]);
if (oldversionstatus == stat_halfconfigured ||
oldversionstatus == stat_triggersawaited ||
oldversionstatus == stat_triggerspending ||
oldversionstatus == stat_installed) {
pkg_set_eflags(pkg, eflag_reinstreq);
pkg_set_status(pkg, stat_halfconfigured);
modstatdb_note(pkg);
push_cleanup(cu_prermupgrade, ~ehflag_normaltidy, NULL, 0, 1, (void *)pkg);
if (versioncompare(&pkg->available.version,
&pkg->installed.version) >= 0) /* Upgrade or reinstall */
maintainer_script_alternative(pkg, PRERMFILE, "pre-removal", cidir, cidirrest,
"upgrade", "failed-upgrade");
else /* Downgrade => no fallback */
maintainer_script_installed(pkg, PRERMFILE, "pre-removal", "upgrade",
versiondescribe(&pkg->available.version,
vdew_nonambig), NULL);
pkg_set_status(pkg, stat_unpacked);
oldversionstatus= stat_unpacked;
modstatdb_note(pkg);
}
for (deconpil= deconfigure; deconpil; deconpil= deconpil->next) {
struct pkginfo *removing = deconpil->pkg_removal;
if (removing)
printf(_("De-configuring %s, to allow removal of %s ...\n"),
pkg_name(deconpil->pkg, pnaw_nonambig),
pkg_name(removing, pnaw_nonambig));
else
printf(_("De-configuring %s ...\n"),
pkg_name(deconpil->pkg, pnaw_nonambig));
trig_activate_packageprocessing(deconpil->pkg);
pkg_set_status(deconpil->pkg, stat_halfconfigured);
modstatdb_note(deconpil->pkg);
/* This means that we *either* go and run postinst abort-deconfigure,
* *or* queue the package for later configure processing, depending
* on which error cleanup route gets taken. */
push_cleanup(cu_prermdeconfigure, ~ehflag_normaltidy,
ok_prermdeconfigure, ehflag_normaltidy,
3, (void*)deconpil->pkg, (void*)removing, (void*)pkg);
if (removing) {
maintainer_script_installed(deconpil->pkg, PRERMFILE, "pre-removal",
"deconfigure", "in-favour", pkg->set->name,
versiondescribe(&pkg->available.version,
vdew_nonambig),
"removing", removing->set->name,
versiondescribe(&removing->installed.version,
vdew_nonambig),
NULL);
} else {
maintainer_script_installed(deconpil->pkg, PRERMFILE, "pre-removal",
"deconfigure", "in-favour", pkg->set->name,
versiondescribe(&pkg->available.version,
vdew_nonambig),
NULL);
}
}
for (i = 0 ; i < cflict_index; i++) {
if (!(conflictor[i]->status == stat_halfconfigured ||
conflictor[i]->status == stat_triggersawaited ||
conflictor[i]->status == stat_triggerspending ||
conflictor[i]->status == stat_installed)) continue;
trig_activate_packageprocessing(conflictor[i]);
pkg_set_status(conflictor[i], stat_halfconfigured);
modstatdb_note(conflictor[i]);
push_cleanup(cu_prerminfavour, ~ehflag_normaltidy, NULL, 0,
2,(void*)conflictor[i],(void*)pkg);
maintainer_script_installed(conflictor[i], PRERMFILE, "pre-removal",
"remove", "in-favour", pkg->set->name,
versiondescribe(&pkg->available.version,
vdew_nonambig),
NULL);
pkg_set_status(conflictor[i], stat_halfinstalled);
modstatdb_note(conflictor[i]);
}
pkg_set_eflags(pkg, eflag_reinstreq);
if (pkg->status == stat_notinstalled)
pkg->installed.version= pkg->available.version;
pkg_set_status(pkg, stat_halfinstalled);
modstatdb_note(pkg);
if (oldversionstatus == stat_notinstalled) {
push_cleanup(cu_preinstverynew, ~ehflag_normaltidy, NULL, 0,
3,(void*)pkg,(void*)cidir,(void*)cidirrest);
maintainer_script_new(pkg, PREINSTFILE, "pre-installation", cidir, cidirrest,
"install", NULL);
} else if (oldversionstatus == stat_configfiles) {
push_cleanup(cu_preinstnew, ~ehflag_normaltidy, NULL, 0,
3,(void*)pkg,(void*)cidir,(void*)cidirrest);
maintainer_script_new(pkg, PREINSTFILE, "pre-installation", cidir, cidirrest,
"install", versiondescribe(&pkg->installed.version,
vdew_nonambig),
NULL);
} else {
push_cleanup(cu_preinstupgrade, ~ehflag_normaltidy, NULL, 0,
4,(void*)pkg,(void*)cidir,(void*)cidirrest,(void*)&oldversionstatus);
maintainer_script_new(pkg, PREINSTFILE, "pre-installation", cidir, cidirrest,
"upgrade", versiondescribe(&pkg->installed.version,
vdew_nonambig),
NULL);
printf(_("Unpacking replacement %.250s ...\n"),
pkgbin_name(pkg, &pkg->available, pnaw_nonambig));
}
/*
* Now we unpack the archive, backing things up as we go.
* For each file, we check to see if it already exists.
* There are several possibilities:
*
* + We are trying to install a non-directory ...
* - It doesn't exist. In this case we simply extract it.
* - It is a plain file, device, symlink, &c. We do an ‘atomic
* overwrite’ using link() and rename(), but leave a backup copy.
* Later, when we delete the backup, we remove it from any other
* packages' lists.
* - It is a directory. In this case it depends on whether we're
* trying to install a symlink or something else.
* = If we're not trying to install a symlink we move the directory
* aside and extract the node. Later, when we recursively remove
* the backed-up directory, we remove it from any other packages'
* lists.
* = If we are trying to install a symlink we do nothing - ie,
* dpkg will never replace a directory tree with a symlink. This
* is to avoid embarrassing effects such as replacing a directory
* tree with a link to a link to the original directory tree.
* + We are trying to install a directory ...
* - It doesn't exist. We create it with the appropriate modes.
* - It exists as a directory or a symlink to one. We do nothing.
* - It is a plain file or a symlink (other than to a directory).
* We move it aside and create the directory. Later, when we
* delete the backup, we remove it from any other packages' lists.
*
* Install non-dir Install symlink Install dir
* Exists not X X X
* File/node/symlink LXR LXR BXR
* Directory BXR - -
*
* X: extract file/node/link/directory
* LX: atomic overwrite leaving backup
* B: ordinary backup
* R: later remove from other packages' lists
* -: do nothing
*
* After we've done this we go through the remaining things in the
* lists of packages we're trying to remove (including the old
* version of the current package). This happens in reverse order,
* so that we process files before the directories (or symlinks-to-
* directories) containing them.
*
* + If the thing is a conffile then we leave it alone for the purge
* operation.
* + Otherwise, there are several possibilities too:
* - The listed thing does not exist. We ignore it.
* - The listed thing is a directory or a symlink to a directory.
* We delete it only if it isn't listed in any other package.
* - The listed thing is not a directory, but was part of the package
* that was upgraded, we check to make sure the files aren't the
* same ones from the old package by checking dev/inode
* - The listed thing is not a directory or a symlink to one (ie,
* it's a plain file, device, pipe, &c, or a symlink to one, or a
* dangling symlink). We delete it.
*
* The removed packages' list becomes empty (of course, the new
* version of the package we're installing will have a new list,
* which replaces the old version's list).
*
* If at any stage we remove a file from a package's list, and the
* package isn't one we're already processing, and the package's
* list becomes empty as a result, we ‘vanish’ the package. This
* means that we run its postrm with the ‘disappear’ argument, and
* put the package in the ‘not-installed’ state. If it had any
* conffiles, their hashes and ownership will have been transferred
* already, so we just ignore those and forget about them from the
* point of view of the disappearing package.
*
* NOTE THAT THE OLD POSTRM IS RUN AFTER THE NEW PREINST, since the
* files get replaced ‘as we go’.
*/
m_pipe(p1);
push_cleanup(cu_closepipe, ehflag_bombout, NULL, 0, 1, (void *)&p1[0]);
pid = subproc_fork();
if (pid == 0) {
m_dup2(p1[1],1); close(p1[0]); close(p1[1]);
execlp(BACKEND, BACKEND, "--fsys-tarfile", filename, NULL);
ohshite(_("unable to execute %s (%s)"),
_("package filesystem archive extraction"), BACKEND);
}
close(p1[1]);
p1[1] = -1;
newfileslist = NULL;
tc.newfilesp = &newfileslist;
push_cleanup(cu_fileslist, ~0, NULL, 0, 0);
tc.pkg= pkg;
tc.backendpipe= p1[0];
r = tar_extractor(&tc, &tf);
if (r) {
if (errno) {
ohshite(_("error reading dpkg-deb tar output"));
} else {
ohshit(_("corrupted filesystem tarfile - corrupted package archive"));
}
}
fd_skip(p1[0], -1, _("dpkg-deb: zap possible trailing zeros"));
close(p1[0]);
p1[0] = -1;
subproc_wait_check(pid, BACKEND " --fsys-tarfile", PROCPIPE);
tar_deferred_extract(newfileslist, pkg);
if (oldversionstatus == stat_halfinstalled || oldversionstatus == stat_unpacked) {
/* Packages that were in ‘installed’ and ‘postinstfailed’ have been
* reduced to ‘unpacked’ by now, by the running of the prerm script. */
pkg_set_status(pkg, stat_halfinstalled);
modstatdb_note(pkg);
push_cleanup(cu_postrmupgrade, ~ehflag_normaltidy, NULL, 0, 1, (void *)pkg);
maintainer_script_alternative(pkg, POSTRMFILE, "post-removal", cidir, cidirrest,
"upgrade", "failed-upgrade");
}
/* If anything goes wrong while tidying up it's a bit late to do
* anything about it. However, we don't install the new status
* info yet, so that a future dpkg installation will put everything
* right (we hope).
*
* If something does go wrong later the ‘conflictor’ package will be
* left in the ‘removal_failed’ state. Removing or installing it
* will be impossible if it was required because of the conflict with
* the package we're installing now and (presumably) the dependency
* by other packages. This means that the files it contains in
* common with this package will hang around until we successfully
* get this package installed, after which point we can trust the
* conflicting package's file list, which will have been updated to
* remove any files in this package. */
push_checkpoint(~ehflag_bombout, ehflag_normaltidy);
/* Now we delete all the files that were in the old version of
* the package only, except (old or new) conffiles, which we leave
* alone. */
reversefilelist_init(&rlistit,pkg->clientdata->files);
while ((namenode= reversefilelist_next(&rlistit))) {
struct filenamenode *usenode;
if ((namenode->flags & fnnf_new_conff) ||
(namenode->flags & fnnf_new_inarchive))
continue;
usenode = namenodetouse(namenode, pkg, &pkg->installed);
trig_file_activate(usenode, pkg);
varbuf_trunc(&fnamevb, fnameidlu);
varbuf_add_str(&fnamevb, usenode->name);
varbuf_end_str(&fnamevb);
if (!stat(namenode->name,&stab) && S_ISDIR(stab.st_mode)) {
debug(dbg_eachfiledetail, "process_archive: %s is a directory",
namenode->name);
if (dir_is_used_by_others(namenode, pkg))
continue;
}
if (lstat(fnamevb.buf, &oldfs)) {
if (!(errno == ENOENT || errno == ELOOP || errno == ENOTDIR))
warning(_("could not stat old file '%.250s' so not deleting it: %s"),
fnamevb.buf, strerror(errno));
continue;
}
if (S_ISDIR(oldfs.st_mode)) {
if (rmdir(fnamevb.buf)) {
warning(_("unable to delete old directory '%.250s': %s"),
namenode->name, strerror(errno));
} else if ((namenode->flags & fnnf_old_conff)) {
warning(_("old conffile '%.250s' was an empty directory "
"(and has now been deleted)"), namenode->name);
}
} else {
struct fileinlist *sameas = NULL;
static struct stat empty_stat;
struct varbuf cfilename = VARBUF_INIT;
/*
* Ok, it's an old file, but is it really not in the new package?
* It might be known by a different name because of symlinks.
*
* We need to check to make sure, so we stat the file, then compare
* it to the new list. If we find a dev/inode match, we assume they
* are the same file, and leave it alone. NOTE: we don't check in
* other packages for sanity reasons (we don't want to stat _all_
* the files on the system).
*
* We run down the list of _new_ files in this package. This keeps
* the process a little leaner. We are only worried about new ones
* since ones that stayed the same don't really apply here.
*/
/* If we can't stat the old or new file, or it's a directory,
* we leave it up to the normal code. */
debug(dbg_eachfile, "process_archive: checking %s for same files on "
"upgrade/downgrade", fnamevb.buf);
for (cfile= newfileslist; cfile; cfile= cfile->next) {
/* If the file has been filtered then treat it as if it didn't exist
* on the file system. */
if (cfile->namenode->flags & fnnf_filtered)
continue;
if (!cfile->namenode->filestat) {
struct stat tmp_stat;
varbuf_reset(&cfilename);
varbuf_add_str(&cfilename, instdir);
varbuf_add_char(&cfilename, '/');
varbuf_add_str(&cfilename, cfile->namenode->name);
varbuf_end_str(&cfilename);
if (lstat(cfilename.buf, &tmp_stat) == 0) {
cfile->namenode->filestat = nfmalloc(sizeof(struct stat));
memcpy(cfile->namenode->filestat, &tmp_stat, sizeof(struct stat));
} else {
if (!(errno == ENOENT || errno == ELOOP || errno == ENOTDIR))
ohshite(_("unable to stat other new file `%.250s'"),
cfile->namenode->name);
cfile->namenode->filestat = &empty_stat;
continue;
}
}
if (cfile->namenode->filestat == &empty_stat)
continue;
if (oldfs.st_dev == cfile->namenode->filestat->st_dev &&
oldfs.st_ino == cfile->namenode->filestat->st_ino) {
if (sameas)
warning(_("old file '%.250s' is the same as several new files! "
"(both '%.250s' and '%.250s')"), fnamevb.buf,
sameas->namenode->name, cfile->namenode->name);
sameas= cfile;
debug(dbg_eachfile, "process_archive: not removing %s,"
" since it matches %s", fnamevb.buf, cfile->namenode->name);
}
}
varbuf_destroy(&cfilename);
if ((namenode->flags & fnnf_old_conff)) {
if (sameas) {
if (sameas->namenode->flags & fnnf_new_conff) {
if (!strcmp(sameas->namenode->oldhash, NEWCONFFILEFLAG)) {
sameas->namenode->oldhash= namenode->oldhash;
debug(dbg_eachfile, "process_archive: old conff %s"
" is same as new conff %s, copying hash",
namenode->name, sameas->namenode->name);
} else {
debug(dbg_eachfile, "process_archive: old conff %s"
" is same as new conff %s but latter already has hash",
namenode->name, sameas->namenode->name);
}
}
} else {
debug(dbg_eachfile, "process_archive: old conff %s"
" is disappearing", namenode->name);
namenode->flags |= fnnf_obs_conff;
newconff_append(&newconffileslastp, namenode);
addfiletolist(&tc, namenode);
}
continue;
}
if (sameas)
continue;
if (secure_unlink_statted(fnamevb.buf, &oldfs)) {
warning(_("unable to securely remove old file '%.250s': %s"),
namenode->name, strerror(errno));
}
} /* !S_ISDIR */
}
/* OK, now we can write the updated files-in-this package list,
* since we've done away (hopefully) with all the old junk. */
write_filelist_except(pkg, &pkg->available, newfileslist, 0);
/* Trigger interests may have changed.
* Firstly we go through the old list of interests deleting them.
* Then we go through the new list adding them. */
strcpy(cidirrest, TRIGGERSCIFILE);
trig_parse_ci(pkgadminfile(pkg, &pkg->installed, TRIGGERSCIFILE),
trig_cicb_interest_delete, NULL, pkg, &pkg->installed);
trig_parse_ci(cidir, trig_cicb_interest_add, NULL, pkg, &pkg->available);
trig_file_interests_save();
/* We also install the new maintainer scripts, and any other
* cruft that may have come along with the package. First
* we go through the existing scripts replacing or removing
* them as appropriate; then we go through the new scripts
* (any that are left) and install them. */
debug(dbg_general, "process_archive updating info directory");
pkg_infodb_update(pkg, cidir, cidirrest);
/*
* Update the status database.
*
* This involves copying each field across from the ‘available’
* to the ‘installed’ half of the pkg structure.
* For some of the fields we have to do a complicated construction
* operation; for others we can just copy the value.
* We tackle the fields in the order they appear, so that
* we don't miss any out :-).
* At least we don't have to copy any strings that are referred
* to, because these are never modified and never freed.
*/
/* The dependencies are the most difficult. We have to build
* a whole new forward dependency tree. At least the reverse
* links (linking our deppossi's into the reverse chains)
* can be done by copy_dependency_links. */
newdeplist = NULL;
newdeplistlastp = &newdeplist;
for (dep= pkg->available.depends; dep; dep= dep->next) {
newdep= nfmalloc(sizeof(struct dependency));
newdep->up= pkg;
newdep->next = NULL;
newdep->list = NULL;
newpossilastp = &newdep->list;
for (possi= dep->list; possi; possi= possi->next) {
newpossi= nfmalloc(sizeof(struct deppossi));
newpossi->up= newdep;
newpossi->ed= possi->ed;
newpossi->next = NULL;
newpossi->rev_next = newpossi->rev_prev = NULL;
newpossi->arch_is_implicit = possi->arch_is_implicit;
newpossi->arch = possi->arch;
newpossi->verrel= possi->verrel;
if (possi->verrel != dvr_none)
newpossi->version= possi->version;
else
blankversion(&newpossi->version);
newpossi->cyclebreak = false;
*newpossilastp= newpossi;
newpossilastp= &newpossi->next;
}
newdep->type= dep->type;
*newdeplistlastp= newdep;
newdeplistlastp= &newdep->next;
}
/* Right, now we've replicated the forward tree, we
* get copy_dependency_links to remove all the old dependency
* structures from the reverse links and add the new dependency
* structures in instead. It also copies the new dependency
* structure pointer for this package into the right field. */
copy_dependency_links(pkg,&pkg->installed.depends,newdeplist,0);
/* We copy the text fields. */
pkg->installed.essential= pkg->available.essential;
pkg->installed.multiarch = pkg->available.multiarch;
pkg->installed.description= pkg->available.description;
pkg->installed.maintainer= pkg->available.maintainer;
pkg->installed.source= pkg->available.source;
pkg->installed.arch = pkg->available.arch;
pkg->installed.installedsize= pkg->available.installedsize;
pkg->installed.version= pkg->available.version;
pkg->installed.origin = pkg->available.origin;
pkg->installed.bugs = pkg->available.bugs;
/* We have to generate our own conffiles structure. */
pkg->installed.conffiles = NULL;
iconffileslastp = &pkg->installed.conffiles;
for (cfile= newconffiles; cfile; cfile= cfile->next) {
newiconff= nfmalloc(sizeof(struct conffile));
newiconff->next = NULL;
newiconff->name= nfstrsave(cfile->namenode->name);
newiconff->hash= nfstrsave(cfile->namenode->oldhash);
newiconff->obsolete= !!(cfile->namenode->flags & fnnf_obs_conff);
*iconffileslastp= newiconff;
iconffileslastp= &newiconff->next;
}
/* We can just copy the arbitrary fields list, because it is
* never even rearranged. Phew! */
pkg->installed.arbs= pkg->available.arbs;
/* Check for disappearing packages:
* We go through all the packages on the system looking for ones
* whose files are entirely part of the one we've just unpacked
* (and which actually *have* some files!).
*
* Any that we find are removed - we run the postrm with ‘disappear’
* as an argument, and remove their info/... files and status info.
* Conffiles are ignored (the new package had better do something
* with them!). */
it = pkg_db_iter_new();
while ((otherpkg = pkg_db_iter_next_pkg(it)) != NULL) {
ensure_package_clientdata(otherpkg);
if (otherpkg == pkg ||
otherpkg->status == stat_notinstalled ||
otherpkg->status == stat_configfiles ||
otherpkg->clientdata->istobe == itb_remove ||
!otherpkg->clientdata->files) continue;
debug(dbg_veryverbose, "process_archive checking disappearance %s",
pkg_name(otherpkg, pnaw_nonambig));
assert(otherpkg->clientdata->istobe == itb_normal ||
otherpkg->clientdata->istobe == itb_deconfigure);
for (cfile= otherpkg->clientdata->files;
cfile && !strcmp(cfile->namenode->name,"/.");
cfile= cfile->next);
if (!cfile) {
debug(dbg_stupidlyverbose, "process_archive no non-root, no disappear");
continue;
}
for (cfile= otherpkg->clientdata->files;
cfile && !filesavespackage(cfile,otherpkg,pkg);
cfile= cfile->next);
if (cfile) continue;
/* So dependency things will give right answers ... */
otherpkg->clientdata->istobe= itb_remove;
debug(dbg_veryverbose, "process_archive disappear checking dependencies");
for (pdep = otherpkg->set->depended.installed;
pdep;
pdep = pdep->rev_next) {
if (pdep->up->type != dep_depends && pdep->up->type != dep_predepends &&
pdep->up->type != dep_recommends) continue;
if (depisok(pdep->up, &depprobwhy, NULL, NULL, false))
continue;
varbuf_end_str(&depprobwhy);
debug(dbg_veryverbose,"process_archive cannot disappear: %s",depprobwhy.buf);
break;
}
if (!pdep) {
/* If we haven't found a reason not to yet, let's look some more. */
for (providecheck= otherpkg->installed.depends;
providecheck;
providecheck= providecheck->next) {
if (providecheck->type != dep_provides) continue;
for (pdep = providecheck->list->ed->depended.installed;
pdep;
pdep = pdep->rev_next) {
if (pdep->up->type != dep_depends && pdep->up->type != dep_predepends &&
pdep->up->type != dep_recommends)
continue;
if (depisok(pdep->up, &depprobwhy, NULL, NULL, false))
continue;
varbuf_end_str(&depprobwhy);
debug(dbg_veryverbose,"process_archive cannot disappear (provides %s): %s",
providecheck->list->ed->name, depprobwhy.buf);
goto break_from_both_loops_at_once;
}
}
break_from_both_loops_at_once:;
}
otherpkg->clientdata->istobe= itb_normal;
if (pdep) continue;
/* No, we're disappearing it. This is the wrong time to go and
* run maintainer scripts and things, as we can't back out. But
* what can we do ? It has to be run this late. */
pkg_disappear(otherpkg, pkg);
} /* while (otherpkg= ... */
pkg_db_iter_free(it);
/* Delete files from any other packages' lists.
* We have to do this before we claim this package is in any
* sane kind of state, as otherwise we might delete by mistake
* a file that we overwrote, when we remove the package which
* had the version we overwrote. To prevent this we make
* sure that we don't claim this package is OK until we
* have claimed ‘ownership’ of all its files. */
for (cfile= newfileslist; cfile; cfile= cfile->next) {
struct filepackages_iterator *iter;
struct pkgset *divpkgset;
if (!(cfile->namenode->flags & fnnf_elide_other_lists)) continue;
if (cfile->namenode->divert && cfile->namenode->divert->useinstead) {
divpkgset = cfile->namenode->divert->pkgset;
if (divpkgset == pkg->set) {
debug(dbg_eachfile,
"process_archive not overwriting any `%s' (overriding, `%s')",
cfile->namenode->name, cfile->namenode->divert->useinstead->name);
continue;
} else {
debug(dbg_eachfile,
"process_archive looking for overwriting `%s' (overridden by %s)",
cfile->namenode->name, divpkgset ? divpkgset->name : "<local>");
}
} else {
divpkgset = NULL;
debug(dbg_eachfile, "process_archive looking for overwriting `%s'",
cfile->namenode->name);
}
iter = filepackages_iter_new(cfile->namenode);
while ((otherpkg = filepackages_iter_next(iter))) {
debug(dbg_eachfiledetail, "process_archive ... found in %s",
pkg_name(otherpkg, pnaw_nonambig));
/* If !fileslistvalid then it's one of the disappeared packages above
* and we don't bother with it here, clearly. */
if (otherpkg == pkg || !otherpkg->clientdata->fileslistvalid)
continue;
if (otherpkg->set == divpkgset) {
debug(dbg_eachfiledetail, "process_archive ... diverted, skipping");
continue;
}
/* Found one. We delete remove the list entry for this file,
* (and any others in the same package) and then mark the package
* as requiring a reread. */
write_filelist_except(otherpkg, &otherpkg->installed,
otherpkg->clientdata->files, fnnf_elide_other_lists);
ensure_package_clientdata(otherpkg);
debug(dbg_veryverbose, "process_archive overwrote from %s",
pkg_name(otherpkg, pnaw_nonambig));
}
filepackages_iter_free(iter);
}
/* Right, the package we've unpacked is now in a reasonable state.
* The only thing that we have left to do with it is remove
* backup files, and we can leave the user to fix that if and when
* it happens (we leave the reinstall required flag, of course). */
pkg_set_status(pkg, stat_unpacked);
modstatdb_note(pkg);
/* Now we delete all the backup files that we made when
* extracting the archive - except for files listed as conffiles
* in the new package.
* This time we count it as an error if something goes wrong.
*
* Note that we don't ever delete things that were in the old
* package as a conffile and don't appear at all in the new.
* They stay recorded as obsolete conffiles and will eventually
* (if not taken over by another package) be forgotten. */
for (cfile= newfileslist; cfile; cfile= cfile->next) {
if (cfile->namenode->flags & fnnf_new_conff) continue;
varbuf_trunc(&fnametmpvb, fnameidlu);
varbuf_add_str(&fnametmpvb,
namenodetouse(cfile->namenode, pkg, &pkg->installed)->name);
varbuf_add_str(&fnametmpvb, DPKGTEMPEXT);
varbuf_end_str(&fnametmpvb);
ensure_pathname_nonexisting(fnametmpvb.buf);
}
/* OK, we're now fully done with the main package.
* This is quite a nice state, so we don't unwind past here. */
pkg_reset_eflags(pkg);
modstatdb_note(pkg);
push_checkpoint(~ehflag_bombout, ehflag_normaltidy);
/* Only the removal of the conflictor left to do.
* The files list for the conflictor is still a little inconsistent in-core,
* as we have not yet updated the filename->packages mappings; however,
* the package->filenames mapping is. */
for (i = 0 ; i < cflict_index ; i++) {
/* We need to have the most up-to-date info about which files are
* what ... */
ensure_allinstfiles_available();
removal_bulk(conflictor[i]);
}
if (cipaction->arg_int == act_install)
add_to_queue(pkg);
}
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();
}