rpm-build/build/reqprov.c

/** \ingroup rpmbuild
 * \file build/reqprov.c
 *  Add dependency tags to package header(s).
 */

#include "system.h"

#include "rpmbuild.h"
#include "debug.h"

int addReqProv(/*@unused@*/ Spec spec, Header h,
	       rpmsenseFlags depFlags, const char *depName, const char *depEVR,
		int index)
{
    HGE_t hge = (HGE_t)headerGetEntryMinMemory;
    HFD_t hfd = headerFreeData;
    const char ** names;
    rpmTagType dnt;
    rpmTag nametag = 0;
    rpmTag versiontag = 0;
    rpmTag flagtag = 0;
    rpmTag indextag = 0;
    int len;
    rpmsenseFlags extra = RPMSENSE_ANY;
    int xx;
    
    if (depFlags & RPMSENSE_PROVIDES) {
	nametag = RPMTAG_PROVIDENAME;
	versiontag = RPMTAG_PROVIDEVERSION;
	flagtag = RPMTAG_PROVIDEFLAGS;
	extra = depFlags & RPMSENSE_FIND_PROVIDES;
    } else if (depFlags & RPMSENSE_OBSOLETES) {
	nametag = RPMTAG_OBSOLETENAME;
	versiontag = RPMTAG_OBSOLETEVERSION;
	flagtag = RPMTAG_OBSOLETEFLAGS;
    } else if (depFlags & RPMSENSE_CONFLICTS) {
	nametag = RPMTAG_CONFLICTNAME;
	versiontag = RPMTAG_CONFLICTVERSION;
	flagtag = RPMTAG_CONFLICTFLAGS;
    } else if (depFlags & RPMSENSE_PREREQ) {
	nametag = RPMTAG_REQUIRENAME;
	versiontag = RPMTAG_REQUIREVERSION;
	flagtag = RPMTAG_REQUIREFLAGS;
	extra = depFlags & _ALL_REQUIRES_MASK;
    } else if (depFlags & RPMSENSE_TRIGGER) {
	nametag = RPMTAG_TRIGGERNAME;
	versiontag = RPMTAG_TRIGGERVERSION;
	flagtag = RPMTAG_TRIGGERFLAGS;
	indextag = RPMTAG_TRIGGERINDEX;
	extra = depFlags & RPMSENSE_TRIGGER;
    } else {
	nametag = RPMTAG_REQUIRENAME;
	versiontag = RPMTAG_REQUIREVERSION;
	flagtag = RPMTAG_REQUIREFLAGS;
	extra = depFlags & _ALL_REQUIRES_MASK;
    }

    depFlags = (depFlags & (RPMSENSE_SENSEMASK | RPMSENSE_MULTILIB)) | extra;

    /*@-branchstate@*/
    if (depEVR == NULL)
	depEVR = "";
    /*@=branchstate@*/
    
    /* Check for duplicate dependencies. */
    if (hge(h, nametag, &dnt, (void **) &names, &len)) {
	const char ** versions = NULL;
	rpmTagType dvt = RPM_STRING_ARRAY_TYPE;
	int *flags = NULL;
	int *indexes = NULL;
	int duplicate = 0;
	rpmsenseFlags sense_mask = ~(RPMSENSE_FIND_REQUIRES | RPMSENSE_FIND_PROVIDES | RPMSENSE_MULTILIB);

	if (flagtag) {
	    xx = hge(h, versiontag, &dvt, (void **) &versions, NULL);
	    xx = hge(h, flagtag, NULL, (void **) &flags, NULL);
	}
	if (indextag)
	    xx = hge(h, indextag, NULL, (void **) &indexes, NULL);

	while (len > 0) {
	    len--;
	    if (indextag && indexes && indexes[len] != index)
		continue;

	    if (strcmp(names[len], depName))
		continue;

	    if (flagtag && flags) {
		rpmsenseFlags old_flags = flags[len] & sense_mask;
		rpmsenseFlags new_flags = depFlags & sense_mask;
		if (old_flags != new_flags) {
		    if ((old_flags & ~RPMSENSE_SENSEMASK) != (new_flags & ~RPMSENSE_SENSEMASK))
			continue;
		    /* flags differ by RPMSENSE_SENSEMASK only */
		    if ((new_flags & sense_mask & (_ALL_REQUIRES_MASK | RPMSENSE_PREREQ)) ||
		        !(new_flags & sense_mask & ~RPMSENSE_SENSEMASK)) {
			/* some kind of requires */
			if (new_flags & RPMSENSE_SENSEMASK)
			    continue;
		    }
		    else
			continue;
		}
	    }

	    if (flagtag && versions) {
		if (*depEVR && strcmp (versions[len], depEVR))
		    continue;
		if (!*depEVR && *versions[len] && (depFlags & ~(sense_mask | _ALL_REQUIRES_MASK | RPMSENSE_PREREQ | RPMSENSE_SENSEMASK)))
		    continue;
	    }

	    /* This is a duplicate dependency. */
	    duplicate = 1;

	    if (flagtag && isDependsMULTILIB(depFlags) &&
		!isDependsMULTILIB(flags[len]))
		    flags[len] |= RPMSENSE_MULTILIB;

	    break;
	}
	names = hfd(names, dnt);
	versions = hfd(versions, dvt);
	if (duplicate)
	    return 0;
    }

    /* Do not add provided requires. */
    if ((nametag == RPMTAG_REQUIRENAME) &&
        (flagtag == RPMTAG_REQUIREFLAGS) &&
        !(depFlags & _notpre(RPMSENSE_RPMLIB | RPMSENSE_KEYRING | RPMSENSE_SCRIPT_PRE | RPMSENSE_SCRIPT_POSTUN)) &&
        !isLegacyPreReq(depFlags) &&
        hge(h, RPMTAG_PROVIDENAME, &dnt, (void **) &names, &len)) {

	int skip = 0;
	int *flags = 0;
	const char ** versions = 0;
	rpmTagType dvt = RPM_STRING_ARRAY_TYPE;

	hge(h, RPMTAG_PROVIDEVERSION, &dvt, (void **) &versions, NULL);
	hge(h, RPMTAG_PROVIDEFLAGS, NULL, (void **) &flags, NULL);

	while (flags && versions && (len > 0)) {
	    --len;

	    if (strcmp (depName, names[len]))
		continue;
	    if (!(depFlags & RPMSENSE_SENSEMASK)) {
		skip = 1;
		break;
	    }
	    if (!(flags[len] & RPMSENSE_SENSEMASK))
		continue;
	    if (rpmRangesOverlap (names[len], versions[len], flags[len], depName, depEVR, depFlags)) {
		skip = 1;
		break;
	    }
	}

	versions = hfd(versions, dvt);
	names = hfd(names, dnt);
	if (skip) return 0;
    }

    /* Add this dependency. */
    xx = headerAddOrAppendEntry(h, nametag, RPM_STRING_ARRAY_TYPE, &depName, 1);
    if (flagtag) {
	xx = headerAddOrAppendEntry(h, versiontag,
			       RPM_STRING_ARRAY_TYPE, &depEVR, 1);
	xx = headerAddOrAppendEntry(h, flagtag,
			       RPM_INT32_TYPE, &depFlags, 1);
    }
    if (indextag)
	xx = headerAddOrAppendEntry(h, indextag, RPM_INT32_TYPE, &index, 1);

    return 0;
}

int rpmlibNeedsFeature(Header h, const char * feature, const char * featureEVR)
{
    char * reqname = alloca(sizeof("rpmlib()") + strlen(feature));

    (void) stpcpy( stpcpy( stpcpy(reqname, "rpmlib("), feature), ")");

    /* XXX 1st arg is unused */
   return addReqProv(NULL, h, RPMSENSE_RPMLIB|(RPMSENSE_LESS|RPMSENSE_EQUAL),
	reqname, featureEVR, 0);
}