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/** \ingroup rpmbuild
* \file build/parseReqs.c
* Parse dependency tag from spec file or from auto-dependency generator.
*/
#include "system.h"
#include <ctype.h>
#include <rpm/rpmtypes.h>
#include <rpm/rpmlog.h>
#include "build/rpmbuild_internal.h"
#include "build/rpmbuild_misc.h"
#include "debug.h"
/**
*/
static struct ReqComp {
const char * token;
rpmsenseFlags sense;
} const 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) && (risspace(*_x) || *(_x) == ',')) (_x)++;}
#define SKIPNONWHITE(_x){while(*(_x) &&!(risspace(*_x) || *(_x) == ',')) (_x)++;}
rpmRC parseRCPOT(rpmSpec spec, Package pkg, const char *field, rpmTagVal tagN,
int index, rpmsenseFlags tagflags)
{
const char *r, *re, *v, *ve;
const char *emsg = NULL;
char * N = NULL, * EVR = NULL;
rpmTagVal nametag = RPMTAG_NOT_FOUND;
rpmsenseFlags Flags;
Header h = pkg->header; /* everything except buildrequires go here */
rpmRC rc = RPMRC_FAIL; /* assume failure */
switch (tagN) {
default:
case RPMTAG_REQUIREFLAGS:
nametag = RPMTAG_REQUIRENAME;
tagflags |= RPMSENSE_ANY;
break;
case RPMTAG_PROVIDEFLAGS:
nametag = RPMTAG_PROVIDENAME;
break;
case RPMTAG_OBSOLETEFLAGS:
nametag = RPMTAG_OBSOLETENAME;
break;
case RPMTAG_CONFLICTFLAGS:
nametag = RPMTAG_CONFLICTNAME;
break;
case RPMTAG_ORDERFLAGS:
nametag = RPMTAG_ORDERNAME;
break;
case RPMTAG_PREREQ:
/* XXX map legacy PreReq into Requires(pre,preun) */
nametag = RPMTAG_REQUIRENAME;
tagflags |= (RPMSENSE_SCRIPT_PRE|RPMSENSE_SCRIPT_PREUN);
break;
case RPMTAG_TRIGGERPREIN:
nametag = RPMTAG_TRIGGERNAME;
tagflags |= RPMSENSE_TRIGGERPREIN;
break;
case RPMTAG_TRIGGERIN:
nametag = RPMTAG_TRIGGERNAME;
tagflags |= RPMSENSE_TRIGGERIN;
break;
case RPMTAG_TRIGGERPOSTUN:
nametag = RPMTAG_TRIGGERNAME;
tagflags |= RPMSENSE_TRIGGERPOSTUN;
break;
case RPMTAG_TRIGGERUN:
nametag = RPMTAG_TRIGGERNAME;
tagflags |= RPMSENSE_TRIGGERUN;
break;
case RPMTAG_BUILDPREREQ:
case RPMTAG_BUILDREQUIRES:
nametag = RPMTAG_REQUIRENAME;
tagflags |= RPMSENSE_ANY;
h = spec->buildRestrictions;
break;
case RPMTAG_BUILDCONFLICTS:
nametag = RPMTAG_CONFLICTNAME;
h = spec->buildRestrictions;
break;
case RPMTAG_SUGGESTSFLAGS:
nametag = RPMTAG_SUGGESTSNAME;
break;
case RPMTAG_ENHANCESFLAGS:
nametag = RPMTAG_ENHANCESNAME;
break;
case RPMTAG_BUILDSUGGESTS:
nametag = RPMTAG_SUGGESTSNAME;
h = spec->buildRestrictions;
break;
case RPMTAG_BUILDENHANCES:
nametag = RPMTAG_ENHANCESNAME;
h = spec->buildRestrictions;
break;
}
for (r = field; *r != '\0'; r = re) {
SKIPWHITE(r);
if (*r == '\0')
break;
Flags = (tagflags & ~RPMSENSE_SENSEMASK);
/*
* Tokens must begin with alphanumeric, _, or /, but we don't know
* the spec's encoding so we only check what we can: plain ascii.
*/
if (isascii(r[0]) && !(risalnum(r[0]) || r[0] == '_' || r[0] == '/')) {
emsg = _("Dependency tokens must begin with alpha-numeric, '_' or '/'");
goto exit;
}
re = r;
SKIPNONWHITE(re);
N = xmalloc((re-r) + 1);
rstrlcpy(N, r, (re-r) + 1);
/* Parse EVR */
v = re;
SKIPWHITE(v);
ve = v;
SKIPNONWHITE(ve);
re = v; /* ==> next token (if no EVR found) starts here */
/* Check for possible logical operator */
if (ve > v) {
const struct ReqComp *rc;
for (rc = ReqComparisons; rc->token != NULL; rc++) {
if ((ve-v) != strlen(rc->token) || !rstreqn(v, rc->token, (ve-v)))
continue;
if (r[0] == '/') {
emsg = _("Versioned file name not permitted");
goto exit;
}
Flags |= rc->sense;
/* now parse EVR */
v = ve;
SKIPWHITE(v);
ve = v;
SKIPNONWHITE(ve);
break;
}
}
if (Flags & RPMSENSE_SENSEMASK) {
if (*v == '\0' || ve == v) {
emsg = _("Version required");
goto exit;
}
EVR = xmalloc((ve-v) + 1);
rstrlcpy(EVR, v, (ve-v) + 1);
if (rpmCharCheck(spec, EVR, ve-v, ".-_+:%{}~")) goto exit;
re = ve; /* ==> next token after EVR string starts here */
} else
EVR = NULL;
if (addReqProv(h, nametag, N, EVR, Flags, index)) {
emsg = _("invalid dependency");
goto exit;
}
N = _free(N);
EVR = _free(EVR);
}
rc = RPMRC_OK;
exit:
if (emsg) {
/* Automatic dependencies don't relate to spec lines */
if (tagflags & (RPMSENSE_FIND_REQUIRES|RPMSENSE_FIND_PROVIDES)) {
rpmlog(RPMLOG_ERR, "%s: %s\n", emsg, r);
} else {
rpmlog(RPMLOG_ERR, _("line %d: %s: %s\n"),
spec->lineNum, emsg, spec->line);
}
}
free(N);
free(EVR);
return rc;
}
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