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/** \file build/parseReqs.c
* Parse dependency tag from spec file or from auto-dependency generator.
*/
#include "system.h"
#include "rpmbuild.h"
static struct ReqComp {
char *token;
int sense;
} ReqComparisons[] = {
{ "<=", RPMSENSE_LESS | RPMSENSE_EQUAL},
{ "=<", RPMSENSE_LESS | RPMSENSE_EQUAL},
{ "<", RPMSENSE_LESS},
{ "==", RPMSENSE_EQUAL},
{ "=", RPMSENSE_EQUAL},
{ ">=", RPMSENSE_GREATER | RPMSENSE_EQUAL},
{ "=>", RPMSENSE_GREATER | RPMSENSE_EQUAL},
{ ">", RPMSENSE_GREATER},
{ NULL, 0 },
};
#define SKIPWHITE(_x) {while(*(_x) && (isspace(*_x) || *(_x) == ',')) (_x)++;}
#define SKIPNONWHITE(_x){while(*(_x) &&!(isspace(*_x) || *(_x) == ',')) (_x)++;}
/** */
int parseRCPOT(Spec spec, Package pkg, const char *field, int tag, int index)
{
const char *r, *re, *v, *ve;
char *req, *version;
Header h;
int tagflags, flags;
switch (tag) {
case RPMTAG_PROVIDEFLAGS:
tagflags = RPMSENSE_PROVIDES;
h = pkg->header;
break;
case RPMTAG_OBSOLETES:
tagflags = RPMSENSE_OBSOLETES;
h = pkg->header;
break;
case RPMTAG_CONFLICTFLAGS:
tagflags = RPMSENSE_CONFLICTS;
h = pkg->header;
break;
case RPMTAG_BUILDCONFLICTS:
tagflags = RPMSENSE_CONFLICTS;
h = spec->buildRestrictions;
break;
case RPMTAG_PREREQ:
tagflags = RPMSENSE_PREREQ;
h = pkg->header;
break;
case RPMTAG_BUILDPREREQ:
tagflags = RPMSENSE_PREREQ;
h = spec->buildRestrictions;
break;
case RPMTAG_TRIGGERIN:
tagflags = RPMSENSE_TRIGGERIN;
h = pkg->header;
break;
case RPMTAG_TRIGGERPOSTUN:
tagflags = RPMSENSE_TRIGGERPOSTUN;
h = pkg->header;
break;
case RPMTAG_TRIGGERUN:
tagflags = RPMSENSE_TRIGGERUN;
h = pkg->header;
break;
case RPMTAG_BUILDREQUIRES:
tagflags = RPMSENSE_ANY;
h = spec->buildRestrictions;
break;
default:
case RPMTAG_REQUIREFLAGS:
tagflags = RPMSENSE_ANY;
h = pkg->header;
break;
}
for (r = field; *r; r = re) {
SKIPWHITE(r);
if (*r == '\0')
break;
flags = tagflags;
/* Tokens must begin with alphanumeric, _, or / */
if (!(isalnum(r[0]) || r[0] == '_' || r[0] == '/')) {
rpmError(RPMERR_BADSPEC,
_("line %d: Dependency tokens must begin with alpha-numeric, '_' or '/': %s"),
spec->lineNum, spec->line);
return RPMERR_BADSPEC;
}
/* Don't permit file names as args for certain tags */
switch (tag) {
case RPMTAG_OBSOLETES:
case RPMTAG_CONFLICTFLAGS:
case RPMTAG_BUILDCONFLICTS:
if (r[0] == '/') {
rpmError(RPMERR_BADSPEC,_("line %d: File name not permitted: %s"),
spec->lineNum, spec->line);
return RPMERR_BADSPEC;
}
break;
default:
break;
}
re = r;
SKIPNONWHITE(re);
req = xmalloc((re-r) + 1);
strncpy(req, r, (re-r));
req[re-r] = '\0';
/* Parse version */
v = re;
SKIPWHITE(v);
ve = v;
SKIPNONWHITE(ve);
re = v; /* ==> next token (if no version found) starts here */
/* Check for possible logical operator */
if (ve > v) {
struct ReqComp *rc;
for (rc = ReqComparisons; rc->token != NULL; rc++) {
if ((ve-v) != strlen(rc->token) || strncmp(v, rc->token, (ve-v)))
continue;
if (r[0] == '/') {
rpmError(RPMERR_BADSPEC,
_("line %d: Versioned file name not permitted: %s"),
spec->lineNum, spec->line);
return RPMERR_BADSPEC;
}
switch(tag) {
case RPMTAG_BUILDPREREQ:
case RPMTAG_PREREQ:
case RPMTAG_PROVIDES:
case RPMTAG_OBSOLETES:
/* Add prereq on rpm version that implements versioning */
addReqProv(spec, h,
RPMSENSE_PREREQ|(RPMSENSE_GREATER|RPMSENSE_EQUAL),
"rpm", "3.0.3", index);
break;
default:
break;
}
flags |= rc->sense;
/* now parse version */
v = ve;
SKIPWHITE(v);
ve = v;
SKIPNONWHITE(ve);
break;
}
}
if (flags & RPMSENSE_SENSEMASK) {
if (*v == '\0' || ve == v) {
rpmError(RPMERR_BADSPEC, _("line %d: Version required: %s"),
spec->lineNum, spec->line);
return RPMERR_BADSPEC;
}
version = xmalloc((ve-v) + 1);
strncpy(version, v, (ve-v));
version[ve-v] = '\0';
re = ve; /* ==> next token after version string starts here */
} else
version = NULL;
addReqProv(spec, h, flags, req, version, index);
if (req) free(req);
if (version) free(version);
}
return 0;
}
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