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rpm/build/parseSpec.c

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/** \ingroup rpmbuild
* \file build/parseSpec.c
* Top level dispatcher for spec file parsing.
*/
#include "system.h"
#include <errno.h>
#include <rpm/rpmtypes.h>
#include <rpm/rpmlib.h> /* RPM_MACHTABLE & related */
#include <rpm/rpmds.h>
#include <rpm/rpmts.h>
#include <rpm/rpmlog.h>
#include <rpm/rpmfileutil.h>
#include "build/rpmbuild_internal.h"
#include "build/rpmbuild_misc.h"
#include "debug.h"
#define SKIPSPACE(s) { while (*(s) && risspace(*(s))) (s)++; }
#define SKIPNONSPACE(s) { while (*(s) && !risspace(*(s))) (s)++; }
#define ISMACRO(s,m) (rstreqn((s), (m), sizeof((m))-1) && !risalpha((s)[sizeof((m))-1]))
#define ISMACROWITHARG(s,m) (rstreqn((s), (m), sizeof((m))-1) && (risblank((s)[sizeof((m))-1]) || !(s)[sizeof((m))-1]))
#define LEN_AND_STR(_tag) (sizeof(_tag)-1), (_tag)
typedef struct OpenFileInfo {
char * fileName;
FILE *fp;
int lineNum;
char readBuf[BUFSIZ];
const char * readPtr;
struct OpenFileInfo * next;
} OFI_t;
static const struct PartRec {
int part;
size_t len;
const char * token;
} partList[] = {
{ PART_PREAMBLE, LEN_AND_STR("%package")},
{ PART_PREP, LEN_AND_STR("%prep")},
{ PART_BUILD, LEN_AND_STR("%build")},
{ PART_INSTALL, LEN_AND_STR("%install")},
{ PART_CHECK, LEN_AND_STR("%check")},
{ PART_CLEAN, LEN_AND_STR("%clean")},
{ PART_PREUN, LEN_AND_STR("%preun")},
{ PART_POSTUN, LEN_AND_STR("%postun")},
{ PART_PRETRANS, LEN_AND_STR("%pretrans")},
{ PART_POSTTRANS, LEN_AND_STR("%posttrans")},
{ PART_PRE, LEN_AND_STR("%pre")},
{ PART_POST, LEN_AND_STR("%post")},
{ PART_FILES, LEN_AND_STR("%files")},
{ PART_CHANGELOG, LEN_AND_STR("%changelog")},
{ PART_DESCRIPTION, LEN_AND_STR("%description")},
{ PART_TRIGGERPOSTUN, LEN_AND_STR("%triggerpostun")},
{ PART_TRIGGERPREIN, LEN_AND_STR("%triggerprein")},
{ PART_TRIGGERUN, LEN_AND_STR("%triggerun")},
{ PART_TRIGGERIN, LEN_AND_STR("%triggerin")},
{ PART_TRIGGERIN, LEN_AND_STR("%trigger")},
{ PART_VERIFYSCRIPT, LEN_AND_STR("%verifyscript")},
{ PART_POLICIES, LEN_AND_STR("%sepolicy")},
{0, 0, 0}
};
int isPart(const char *line)
{
const struct PartRec *p;
for (p = partList; p->token != NULL; p++) {
char c;
if (rstrncasecmp(line, p->token, p->len))
continue;
c = *(line + p->len);
if (c == '\0' || risspace(c))
break;
}
return (p->token ? p->part : PART_NONE);
}
/**
*/
static int matchTok(const char *token, const char *line)
{
const char *b, *be = line;
size_t toklen = strlen(token);
int rc = 0;
while ( *(b = be) != '\0' ) {
SKIPSPACE(b);
be = b;
SKIPNONSPACE(be);
if (be == b)
break;
if (toklen != (be-b) || rstrncasecmp(token, b, (be-b)))
continue;
rc = 1;
break;
}
return rc;
}
void handleComments(char *s)
{
SKIPSPACE(s);
if (*s == '#')
*s = '\0';
}
/* Push a file to spec's file stack, return the newly pushed entry */
static OFI_t * pushOFI(rpmSpec spec, const char *fn)
{
OFI_t *ofi = xcalloc(1, sizeof(*ofi));
ofi->fp = NULL;
ofi->fileName = xstrdup(fn);
ofi->lineNum = 0;
ofi->readBuf[0] = '\0';
ofi->readPtr = NULL;
ofi->next = spec->fileStack;
spec->fileStack = ofi;
return spec->fileStack;
}
/* Pop from spec's file stack */
static OFI_t * popOFI(rpmSpec spec)
{
if (spec->fileStack) {
OFI_t * ofi = spec->fileStack;
spec->fileStack = ofi->next;
if (ofi->fp)
fclose(ofi->fp);
free(ofi->fileName);
free(ofi);
}
return spec->fileStack;
}
static int restoreFirstChar(rpmSpec spec)
{
/* Restore 1st char in (possible) next line */
if (spec->nextline != NULL && spec->nextpeekc != '\0') {
*spec->nextline = spec->nextpeekc;
spec->nextpeekc = '\0';
return 1;
}
return 0;
}
/* Return zero on success, 1 if we need to read more and -1 on errors. */
static int copyNextLineFromOFI(rpmSpec spec, OFI_t *ofi)
{
/* Expand next line from file into line buffer */
if (!(spec->nextline && *spec->nextline)) {
int pc = 0, bc = 0, nc = 0;
const char *from = ofi->readPtr;
char ch = ' ';
while (from && *from && ch != '\n') {
ch = spec->lbuf[spec->lbufOff] = *from;
spec->lbufOff++; from++;
if (spec->lbufOff >= spec->lbufSize) {
spec->lbufSize += BUFSIZ;
spec->lbuf = realloc(spec->lbuf, spec->lbufSize);
}
}
spec->lbuf[spec->lbufOff] = '\0';
ofi->readPtr = from;
/* Check if we need another line before expanding the buffer. */
for (const char *p = spec->lbuf; *p; p++) {
switch (*p) {
case '\\':
switch (*(p+1)) {
case '\n': p++, nc = 1; break;
case '\0': break;
default: p++; break;
}
break;
case '\n': nc = 0; break;
case '%':
switch (*(p+1)) {
case '{': p++, bc++; break;
case '(': p++, pc++; break;
case '%': p++; break;
}
break;
case '{': if (bc > 0) bc++; break;
case '}': if (bc > 0) bc--; break;
case '(': if (pc > 0) pc++; break;
case ')': if (pc > 0) pc--; break;
}
}
/* If it doesn't, ask for one more line. */
if (pc || bc || nc ) {
spec->nextline = "";
return 1;
}
spec->lbufOff = 0;
/* Don't expand macros (eg. %define) in false branch of %if clause */
if (spec->readStack->reading &&
expandMacros(spec, spec->macros, spec->lbuf, spec->lbufSize)) {
rpmlog(RPMLOG_ERR, _("line %d: %s\n"),
spec->lineNum, spec->lbuf);
return -1;
}
spec->nextline = spec->lbuf;
}
return 0;
}
static void copyNextLineFinish(rpmSpec spec, int strip)
{
char *last;
char ch;
/* Find next line in expanded line buffer */
spec->line = last = spec->nextline;
ch = ' ';
while (*spec->nextline && ch != '\n') {
ch = *spec->nextline++;
if (!risspace(ch))
last = spec->nextline;
}
/* Save 1st char of next line in order to terminate current line. */
if (*spec->nextline != '\0') {
spec->nextpeekc = *spec->nextline;
*spec->nextline = '\0';
}
if (strip & STRIP_COMMENTS)
handleComments(spec->line);
if (strip & STRIP_TRAILINGSPACE)
*last = '\0';
}
static int readLineFromOFI(rpmSpec spec, OFI_t *ofi)
{
retry:
/* Make sure the current file is open */
if (ofi->fp == NULL) {
ofi->fp = fopen(ofi->fileName, "r");
if (ofi->fp == NULL) {
rpmlog(RPMLOG_ERR, _("Unable to open %s: %s\n"),
ofi->fileName, strerror(errno));
return PART_ERROR;
}
spec->lineNum = ofi->lineNum = 0;
}
/* Make sure we have something in the read buffer */
if (!(ofi->readPtr && *(ofi->readPtr))) {
if (!fgets(ofi->readBuf, BUFSIZ, ofi->fp)) {
/* EOF, remove this file from the stack */
ofi = popOFI(spec);
/* only on last file do we signal EOF to caller */
if (ofi == NULL)
return 1;
/* otherwise, go back and try the read again. */
goto retry;
}
ofi->readPtr = ofi->readBuf;
ofi->lineNum++;
spec->lineNum = ofi->lineNum;
}
return 0;
}
#define ARGMATCH(s,token,match) \
do { \
char *os = s; \
char *exp = rpmExpand(token, NULL); \
while(*s && !risblank(*s)) s++; \
while(*s && risblank(*s)) s++; \
if (!*s) { \
rpmlog(RPMLOG_ERR, _("%s:%d: Argument expected for %s\n"), ofi->fileName, ofi->lineNum, os); \
free(exp); \
return PART_ERROR; \
} \
match = matchTok(exp, s); \
free(exp); \
} while (0)
int readLine(rpmSpec spec, int strip)
{
char *s;
int match;
struct ReadLevelEntry *rl;
OFI_t *ofi = spec->fileStack;
int rc;
int startLine = 0;
if (!restoreFirstChar(spec)) {
retry:
if ((rc = readLineFromOFI(spec, ofi)) != 0) {
if (spec->readStack->next) {
rpmlog(RPMLOG_ERR, _("line %d: Unclosed %%if\n"),
spec->readStack->lineNum);
rc = PART_ERROR;
} else if (startLine > 0) {
rpmlog(RPMLOG_ERR,
_("line %d: unclosed macro or bad line continuation\n"),
startLine);
rc = PART_ERROR;
}
return rc;
}
ofi = spec->fileStack;
/* Copy next file line into the spec line buffer */
rc = copyNextLineFromOFI(spec, ofi);
if (rc > 0) {
if (startLine == 0)
startLine = spec->lineNum;
goto retry;
} else if (rc < 0) {
return PART_ERROR;
}
}
copyNextLineFinish(spec, strip);
s = spec->line;
SKIPSPACE(s);
match = -1;
if (!spec->readStack->reading && ISMACROWITHARG(s, "%if")) {
match = 0;
} else if (ISMACROWITHARG(s, "%ifarch")) {
ARGMATCH(s, "%{_target_cpu}", match);
} else if (ISMACROWITHARG(s, "%ifnarch")) {
ARGMATCH(s, "%{_target_cpu}", match);
match = !match;
} else if (ISMACROWITHARG(s, "%ifos")) {
ARGMATCH(s, "%{_target_os}", match);
} else if (ISMACROWITHARG(s, "%ifnos")) {
ARGMATCH(s, "%{_target_os}", match);
match = !match;
} else if (ISMACROWITHARG(s, "%if")) {
s += 3;
match = parseExpressionBoolean(spec, s);
if (match < 0) {
rpmlog(RPMLOG_ERR,
_("%s:%d: bad %%if condition\n"),
ofi->fileName, ofi->lineNum);
return PART_ERROR;
}
} else if (ISMACRO(s, "%else")) {
if (! spec->readStack->next) {
/* Got an else with no %if ! */
rpmlog(RPMLOG_ERR,
_("%s:%d: Got a %%else with no %%if\n"),
ofi->fileName, ofi->lineNum);
return PART_ERROR;
}
spec->readStack->reading =
spec->readStack->next->reading && ! spec->readStack->reading;
spec->line[0] = '\0';
} else if (ISMACRO(s, "%endif")) {
if (! spec->readStack->next) {
/* Got an end with no %if ! */
rpmlog(RPMLOG_ERR,
_("%s:%d: Got a %%endif with no %%if\n"),
ofi->fileName, ofi->lineNum);
return PART_ERROR;
}
rl = spec->readStack;
spec->readStack = spec->readStack->next;
free(rl);
spec->line[0] = '\0';
} else if (spec->readStack->reading && ISMACROWITHARG(s, "%include")) {
char *fileName, *endFileName, *p;
fileName = s+8;
SKIPSPACE(fileName);
endFileName = fileName;
SKIPNONSPACE(endFileName);
p = endFileName;
SKIPSPACE(p);
if (*fileName == '\0' || *p != '\0') {
rpmlog(RPMLOG_ERR, _("%s:%d: malformed %%include statement\n"),
ofi->fileName, ofi->lineNum);
return PART_ERROR;
}
*endFileName = '\0';
ofi = pushOFI(spec, fileName);
goto retry;
}
if (match != -1) {
rl = xmalloc(sizeof(*rl));
rl->reading = spec->readStack->reading && match;
rl->next = spec->readStack;
rl->lineNum = ofi->lineNum;
spec->readStack = rl;
spec->line[0] = '\0';
}
if (! spec->readStack->reading) {
spec->line[0] = '\0';
}
/* Collect parsed line */
if (spec->parsed == NULL)
spec->parsed = newStringBuf();
appendStringBufAux(spec->parsed, spec->line,(strip & STRIP_TRAILINGSPACE));
/* FIX: spec->readStack->next should be dependent */
return 0;
}
void closeSpec(rpmSpec spec)
{
while (popOFI(spec)) {};
}
static const rpmTagVal sourceTags[] = {
RPMTAG_NAME,
RPMTAG_VERSION,
RPMTAG_RELEASE,
RPMTAG_EPOCH,
RPMTAG_SUMMARY,
RPMTAG_DESCRIPTION,
RPMTAG_PACKAGER,
RPMTAG_DISTRIBUTION,
RPMTAG_DISTURL,
RPMTAG_VENDOR,
RPMTAG_LICENSE,
RPMTAG_GROUP,
RPMTAG_OS,
RPMTAG_ARCH,
RPMTAG_CHANGELOGTIME,
RPMTAG_CHANGELOGNAME,
RPMTAG_CHANGELOGTEXT,
RPMTAG_URL,
RPMTAG_BUGURL,
RPMTAG_HEADERI18NTABLE,
RPMTAG_VCS,
0
};
static void initSourceHeader(rpmSpec spec)
{
Package sourcePkg = spec->sourcePackage;
struct Source *srcPtr;
if (headerIsEntry(sourcePkg->header, RPMTAG_NAME))
return;
/* Only specific tags are added to the source package header */
headerCopyTags(spec->packages->header, sourcePkg->header, sourceTags);
/* Add the build restrictions */
{
HeaderIterator hi = headerInitIterator(spec->buildRestrictions);
struct rpmtd_s td;
while (headerNext(hi, &td)) {
if (rpmtdCount(&td) > 0) {
(void) headerPut(sourcePkg->header, &td, HEADERPUT_DEFAULT);
}
rpmtdFreeData(&td);
}
headerFreeIterator(hi);
}
if (spec->BANames && spec->BACount > 0) {
headerPutStringArray(sourcePkg->header, RPMTAG_BUILDARCHS,
spec->BANames, spec->BACount);
}
/* Add tags for sources and patches */
for (srcPtr = spec->sources; srcPtr != NULL; srcPtr = srcPtr->next) {
if (srcPtr->flags & RPMBUILD_ISSOURCE) {
headerPutString(sourcePkg->header, RPMTAG_SOURCE, srcPtr->source);
if (srcPtr->flags & RPMBUILD_ISNO) {
headerPutUint32(sourcePkg->header, RPMTAG_NOSOURCE,
&srcPtr->num, 1);
}
}
if (srcPtr->flags & RPMBUILD_ISPATCH) {
headerPutString(sourcePkg->header, RPMTAG_PATCH, srcPtr->source);
if (srcPtr->flags & RPMBUILD_ISNO) {
headerPutUint32(sourcePkg->header, RPMTAG_NOPATCH,
&srcPtr->num, 1);
}
}
}
}
/* Add extra provides to package. */
static void addPackageProvides(Package pkg)
{
const char *arch, *name;
char *evr, *isaprov;
rpmsenseFlags pflags = RPMSENSE_EQUAL;
/* <name> = <evr> provide */
name = headerGetString(pkg->header, RPMTAG_NAME);
arch = headerGetString(pkg->header, RPMTAG_ARCH);
evr = headerGetAsString(pkg->header, RPMTAG_EVR);
addReqProv(pkg, RPMTAG_PROVIDENAME, name, evr, pflags, 0);
/*
* <name>(<isa>) = <evr> provide
* FIXME: noarch needs special casing for now as BuildArch: noarch doesn't
* cause reading in the noarch macros :-/
*/
isaprov = rpmExpand(name, "%{?_isa}", NULL);
if (!rstreq(arch, "noarch") && !rstreq(name, isaprov)) {
addReqProv(pkg, RPMTAG_PROVIDENAME, isaprov, evr, pflags, 0);
}
free(isaprov);
free(evr);
}
static void addTargets(Package Pkgs)
{
char *platform = rpmExpand("%{_target_platform}", NULL);
char *arch = rpmExpand("%{_target_cpu}", NULL);
char *os = rpmExpand("%{_target_os}", NULL);
char *optflags = rpmExpand("%{optflags}", NULL);
for (Package pkg = Pkgs; pkg != NULL; pkg = pkg->next) {
headerPutString(pkg->header, RPMTAG_OS, os);
/* noarch subpackages already have arch set here, leave it alone */
if (!headerIsEntry(pkg->header, RPMTAG_ARCH)) {
headerPutString(pkg->header, RPMTAG_ARCH, arch);
}
headerPutString(pkg->header, RPMTAG_PLATFORM, platform);
headerPutString(pkg->header, RPMTAG_OPTFLAGS, optflags);
pkg->ds = rpmdsThis(pkg->header, RPMTAG_REQUIRENAME, RPMSENSE_EQUAL);
addPackageProvides(pkg);
}
free(platform);
free(arch);
free(os);
free(optflags);
}
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:
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);
closeSpec(spec);
exit:
/* Assemble source header from parsed components */
initSourceHeader(spec);
return spec;
errxit:
rpmSpecFree(spec);
return NULL;
}
rpmSpec rpmSpecParse(const char *specFile, rpmSpecFlags flags,
const char *buildRoot)
{
return parseSpec(specFile, flags, buildRoot, 0);
}
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