static rpmSpec parseSpec(const char *specFile, rpmSpecFlags flags,
const char *buildRoot, int recursing)
{
int parsePart = PART_PREAMBLE;
int initialPackage = 1;
rpmSpec spec;
/* Set up a new Spec structure with no packages. */
spec = newSpec();
spec->specFile = rpmGetPath(specFile, NULL);
pushOFI(spec, spec->specFile);
/* If buildRoot not specified, use default %{buildroot} */
if (buildRoot) {
spec->buildRoot = xstrdup(buildRoot);
} else {
spec->buildRoot = rpmGetPath("%{?buildroot:%{buildroot}}", NULL);
}
addMacro(NULL, "_docdir", NULL, "%{_defaultdocdir}", RMIL_SPEC);
addMacro(NULL, "_licensedir", NULL, "%{_defaultlicensedir}", RMIL_SPEC);
spec->recursing = recursing;
spec->flags = flags;
/* All the parse*() functions expect to have a line pre-read */
/* in the spec's line buffer. Except for parsePreamble(), */
/* which handles the initial entry into a spec file. */
while (parsePart != PART_NONE) {
int goterror = 0;
switch (parsePart) {
case PART_ERROR: /* fallthrough */
default:
goterror = 1;
break;
case PART_PREAMBLE:
parsePart = parsePreamble(spec, initialPackage);
initialPackage = 0;
break;
case PART_PREP:
parsePart = parsePrep(spec);
break;
case PART_BUILD:
case PART_INSTALL:
case PART_CHECK:
case PART_CLEAN:
parsePart = parseBuildInstallClean(spec, parsePart);
break;
case PART_CHANGELOG:
parsePart = parseChangelog(spec);
break;
case PART_DESCRIPTION:
parsePart = parseDescription(spec);
break;
case PART_PRE:
case PART_POST:
case PART_PREUN:
case PART_POSTUN:
case PART_PRETRANS:
case PART_POSTTRANS:
case PART_VERIFYSCRIPT:
case PART_TRIGGERPREIN:
case PART_TRIGGERIN:
case PART_TRIGGERUN:
case PART_TRIGGERPOSTUN:
case PART_FILETRIGGERIN:
case PART_FILETRIGGERUN:
case PART_FILETRIGGERPOSTUN:
case PART_TRANSFILETRIGGERIN:
case PART_TRANSFILETRIGGERUN:
case PART_TRANSFILETRIGGERPOSTUN:
parsePart = parseScript(spec, parsePart);
break;
case PART_FILES:
parsePart = parseFiles(spec);
break;
case PART_POLICIES:
parsePart = parsePolicies(spec);
break;
case PART_NONE: /* XXX avoid gcc whining */
case PART_LAST:
case PART_BUILDARCHITECTURES:
break;
}
if (goterror || parsePart >= PART_LAST) {
goto errxit;
}
if (parsePart == PART_BUILDARCHITECTURES) {
int index;
int x;
closeSpec(spec);
spec->BASpecs = xcalloc(spec->BACount, sizeof(*spec->BASpecs));
index = 0;
if (spec->BANames != NULL)
for (x = 0; x < spec->BACount; x++) {
/* Skip if not arch is not compatible. */
if (!rpmMachineScore(RPM_MACHTABLE_BUILDARCH, spec->BANames[x]))
continue;
addMacro(NULL, "_target_cpu", NULL, spec->BANames[x], RMIL_RPMRC);
spec->BASpecs[index] = parseSpec(specFile, flags, buildRoot, 1);
if (spec->BASpecs[index] == NULL) {
spec->BACount = index;
goto errxit;
}
delMacro(NULL, "_target_cpu");
index++;
}
spec->BACount = index;
if (! index) {
rpmlog(RPMLOG_ERR,
_("No compatible architectures found for build\n"));
goto errxit;
}
/*
* Return the 1st child's fully parsed Spec structure.
* The restart of the parse when encountering BuildArch
* causes problems for "rpm -q --specfile". This is
* still a hack because there may be more than 1 arch
* specified (unlikely but possible.) There's also the
* further problem that the macro context, particularly
* %{_target_cpu}, disagrees with the info in the header.
*/
if (spec->BACount >= 1) {
rpmSpec nspec = spec->BASpecs[0];
spec->BASpecs = _free(spec->BASpecs);
rpmSpecFree(spec);
spec = nspec;
}
goto exit;
}
}
if (spec->clean == NULL) {
char *body = rpmExpand("%{?buildroot: %{__rm} -rf %{buildroot}}", NULL);
spec->clean = newStringBuf();
appendLineStringBuf(spec->clean, body);
free(body);
}
/* Check for description in each package */
for (Package pkg = spec->packages; pkg != NULL; pkg = pkg->next) {
if (!headerIsEntry(pkg->header, RPMTAG_DESCRIPTION)) {
rpmlog(RPMLOG_ERR, _("Package has no %%description: %s\n"),
headerGetString(pkg->header, RPMTAG_NAME));
goto errxit;
}
}
/* Add arch, os and platform, self-provides etc for each package */
addTargets(spec->packages);
/* Check for encoding in each package unless disabled */
if (!(spec->flags & RPMSPEC_NOUTF8)) {
int badenc = 0;
for (Package pkg = spec->packages; pkg != NULL; pkg = pkg->next) {
if (checkForEncoding(pkg->header, 0) != RPMRC_OK) {
badenc = 1;
}
}
if (badenc)
goto errxit;
}
closeSpec(spec);
exit:
/* Assemble source header from parsed components */
initSourceHeader(spec);
return spec;
errxit:
rpmSpecFree(spec);
return NULL;
}
/*
* This is more than just a little insane:
* In order to write the signature, we need to know the size and
* the size and digests of the header and payload, which are located
* after the signature on disk. We also need a digest of the compressed
* payload for the main header, and of course the payload is after the
* header on disk. So we need to create placeholders for both the
* signature and main header that exactly match the final sizes, calculate
* the payload digest, then generate and write the real main header to
* be able to FINALLY calculate the digests we need for the signature
* header. In other words, we need to write things in the exact opposite
* order to how the RPM format is laid on disk.
*/
static rpmRC writeRPM(Package pkg, unsigned char ** pkgidp,
const char *fileName, char **cookie)
{
FD_t fd = NULL;
char * rpmio_flags = NULL;
char * SHA1 = NULL;
char * SHA256 = NULL;
uint8_t * MD5 = NULL;
char * pld = NULL;
uint32_t pld_algo = PGPHASHALGO_SHA256; /* TODO: macro configuration */
rpmRC rc = RPMRC_FAIL; /* assume failure */
rpm_loff_t archiveSize = 0;
off_t sigStart, hdrStart, payloadStart, payloadEnd;
if (pkgidp)
*pkgidp = NULL;
rpmio_flags = getIOFlags(pkg);
if (!rpmio_flags)
goto exit;
finalizeDeps(pkg);
/* Create and add the cookie */
if (cookie) {
rasprintf(cookie, "%s %d", buildHost(), (int) (*getBuildTime()));
headerPutString(pkg->header, RPMTAG_COOKIE, *cookie);
}
/* Create a dummy payload digest to get the header size right */
pld = nullDigest(pld_algo, 1);
headerPutUint32(pkg->header, RPMTAG_PAYLOADDIGESTALGO, &pld_algo, 1);
headerPutString(pkg->header, RPMTAG_PAYLOADDIGEST, pld);
pld = _free(pld);
/* Check for UTF-8 encoding of string tags, add encoding tag if all good */
if (checkForEncoding(pkg->header, 1))
goto exit;
/* Open the output file */
fd = Fopen(fileName, "w+.ufdio");
if (fd == NULL || Ferror(fd)) {
rpmlog(RPMLOG_ERR, _("Could not open %s: %s\n"),
fileName, Fstrerror(fd));
goto exit;
}
/* Write the lead section into the package. */
if (rpmLeadWrite(fd, pkg->header)) {
rpmlog(RPMLOG_ERR, _("Unable to write package: %s\n"), Fstrerror(fd));
goto exit;
}
/* Save the position of signature section */
sigStart = Ftell(fd);
/* Generate and write a placeholder signature header */
SHA1 = nullDigest(PGPHASHALGO_SHA1, 1);
SHA256 = nullDigest(PGPHASHALGO_SHA256, 1);
MD5 = nullDigest(PGPHASHALGO_MD5, 0);
if (rpmGenerateSignature(SHA256, SHA1, MD5, 0, 0, fd))
goto exit;
SHA1 = _free(SHA1);
SHA256 = _free(SHA256);
MD5 = _free(MD5);
/* Write a placeholder header. */
hdrStart = Ftell(fd);
if (writeHdr(fd, pkg->header))
goto exit;
/* Write payload section (cpio archive) */
payloadStart = Ftell(fd);
if (cpio_doio(fd, pkg, rpmio_flags, &archiveSize))
goto exit;
payloadEnd = Ftell(fd);
/* Re-read payload to calculate compressed digest */
fdInitDigestID(fd, pld_algo, RPMTAG_PAYLOADDIGEST, 0);
if (fdConsume(fd, payloadStart, payloadEnd - payloadStart))
goto exit;
fdFiniDigest(fd, RPMTAG_PAYLOADDIGEST, (void **)&pld, NULL, 1);
/* Insert the payload digest in main header */
headerDel(pkg->header, RPMTAG_PAYLOADDIGEST);
headerPutString(pkg->header, RPMTAG_PAYLOADDIGEST, pld);
pld = _free(pld);
/* Write the final header */
if (fdJump(fd, hdrStart))
goto exit;
if (writeHdr(fd, pkg->header))
goto exit;
/* Calculate digests: SHA on header, legacy MD5 on header + payload */
fdInitDigestID(fd, PGPHASHALGO_MD5, RPMTAG_SIGMD5, 0);
fdInitDigestID(fd, PGPHASHALGO_SHA1, RPMTAG_SHA1HEADER, 0);
fdInitDigestID(fd, PGPHASHALGO_SHA256, RPMTAG_SHA256HEADER, 0);
if (fdConsume(fd, hdrStart, payloadStart - hdrStart))
goto exit;
fdFiniDigest(fd, RPMTAG_SHA1HEADER, (void **)&SHA1, NULL, 1);
fdFiniDigest(fd, RPMTAG_SHA256HEADER, (void **)&SHA256, NULL, 1);
if (fdConsume(fd, 0, payloadEnd - payloadStart))
goto exit;
fdFiniDigest(fd, RPMTAG_SIGMD5, (void **)&MD5, NULL, 0);
if (fdJump(fd, sigStart))
goto exit;
/* Generate the signature. Now with right values */
if (rpmGenerateSignature(SHA256, SHA1, MD5, payloadEnd - hdrStart, archiveSize, fd))
goto exit;
rc = RPMRC_OK;
exit:
free(rpmio_flags);
free(SHA1);
free(SHA256);
/* XXX Fish the pkgid out of the signature header. */
if (pkgidp != NULL) {
if (MD5 != NULL) {
*pkgidp = MD5;
}
} else {
free(MD5);
}
Fclose(fd);
if (rc == RPMRC_OK)
rpmlog(RPMLOG_NOTICE, _("Wrote: %s\n"), fileName);
else
(void) unlink(fileName);
return rc;
}
