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-rw-r--r--lib/libalpm/deps.c132
1 files changed, 72 insertions, 60 deletions
diff --git a/lib/libalpm/deps.c b/lib/libalpm/deps.c
index 75ecab3c..a84d8b2a 100644
--- a/lib/libalpm/deps.c
+++ b/lib/libalpm/deps.c
@@ -139,18 +139,18 @@ alpm_list_t *_alpm_sortbydeps(alpm_list_t *targets, pmtranstype_t mode)
pmpkg_t *p = i->data;
_alpm_log(PM_LOG_DEBUG, " sorting %s", alpm_pkg_get_name(p));
for(j = alpm_pkg_get_depends(p); j; j = j->next) {
- pmdepend_t dep;
+ pmdepend_t *depend = _alpm_splitdep(j->data);
pmpkg_t *q = NULL;
- if(_alpm_splitdep(j->data, &dep)) {
+ if(depend == NULL) {
continue;
}
- /* look for dep.name -- if it's farther down in the list, then
+ /* look for depend->name -- if it's farther down in the list, then
* move it up above p
*/
for(k = i->next; k; k = k->next) {
q = k->data;
const char *qname = alpm_pkg_get_name(q);
- if(!strcmp(dep.name, qname)) {
+ if(!strcmp(depend->name, qname)) {
if(!_alpm_pkg_find(qname, tmptargs)) {
change = 1;
tmptargs = alpm_list_add(tmptargs, q);
@@ -159,7 +159,7 @@ alpm_list_t *_alpm_sortbydeps(alpm_list_t *targets, pmtranstype_t mode)
}
for(l = alpm_pkg_get_provides(q); l; l = l->next) {
const char *provname = l->data;
- if(!strcmp(dep.name, provname)) {
+ if(!strcmp(depend->name, provname)) {
if(!_alpm_pkg_find(provname, tmptargs)) {
change = 1;
tmptargs = alpm_list_add(tmptargs, q);
@@ -168,6 +168,7 @@ alpm_list_t *_alpm_sortbydeps(alpm_list_t *targets, pmtranstype_t mode)
}
}
}
+ free(depend);
}
if(!_alpm_pkg_find(alpm_pkg_get_name(p), tmptargs)) {
tmptargs = alpm_list_add(tmptargs, p);
@@ -199,7 +200,6 @@ alpm_list_t *_alpm_sortbydeps(alpm_list_t *targets, pmtranstype_t mode)
alpm_list_t *_alpm_checkdeps(pmtrans_t *trans, pmdb_t *db, pmtranstype_t op,
alpm_list_t *packages)
{
- pmdepend_t depend;
alpm_list_t *i, *j, *k, *l;
int found = 0;
alpm_list_t *baddeps = NULL;
@@ -241,19 +241,22 @@ alpm_list_t *_alpm_checkdeps(pmtrans_t *trans, pmdb_t *db, pmtranstype_t op,
}
for(k = alpm_pkg_get_depends(p); k; k = k->next) {
/* don't break any existing dependencies (possible provides) */
- _alpm_splitdep(k->data, &depend);
+ pmdepend_t *depend = _alpm_splitdep(k->data);
+ if(depend == NULL) {
+ continue;
+ }
/* if oldpkg satisfied this dep, and newpkg doesn't */
- if(_alpm_depcmp(oldpkg, &depend) && !_alpm_depcmp(newpkg, &depend)) {
+ if(_alpm_depcmp(oldpkg, depend) && !_alpm_depcmp(newpkg, depend)) {
/* we've found a dep that was removed... see if any other package
* still contains/provides the dep */
int satisfied = 0;
for(l = packages; l; l = l->next) {
pmpkg_t *pkg = l->data;
- if(_alpm_depcmp(pkg, &depend)) {
+ if(_alpm_depcmp(pkg, depend)) {
_alpm_log(PM_LOG_DEBUG, _("checkdeps: dependency '%s' has moved from '%s' to '%s'"),
- depend.name, alpm_pkg_get_name(oldpkg), alpm_pkg_get_name(pkg));
+ depend->name, alpm_pkg_get_name(oldpkg), alpm_pkg_get_name(pkg));
satisfied = 1;
break;
}
@@ -270,9 +273,9 @@ alpm_list_t *_alpm_checkdeps(pmtrans_t *trans, pmdb_t *db, pmtranstype_t op,
continue;
}
- if(_alpm_depcmp(pkg, &depend)) {
+ if(_alpm_depcmp(pkg, depend)) {
_alpm_log(PM_LOG_DEBUG, _("checkdeps: dependency '%s' satisfied by installed package '%s'"),
- depend.name, alpm_pkg_get_name(pkg));
+ depend->name, alpm_pkg_get_name(pkg));
satisfied = 1;
break;
}
@@ -282,8 +285,8 @@ alpm_list_t *_alpm_checkdeps(pmtrans_t *trans, pmdb_t *db, pmtranstype_t op,
if(!satisfied) {
_alpm_log(PM_LOG_DEBUG, _("checkdeps: updated '%s' won't satisfy a dependency of '%s'"),
alpm_pkg_get_name(oldpkg), alpm_pkg_get_name(p));
- miss = _alpm_depmiss_new(p->name, PM_DEP_TYPE_REQUIRED, depend.mod,
- depend.name, depend.version);
+ miss = _alpm_depmiss_new(p->name, PM_DEP_TYPE_REQUIRED, depend->mod,
+ depend->name, depend->version);
if(!_alpm_depmiss_isin(miss, baddeps)) {
baddeps = alpm_list_add(baddeps, miss);
} else {
@@ -291,6 +294,7 @@ alpm_list_t *_alpm_checkdeps(pmtrans_t *trans, pmdb_t *db, pmtranstype_t op,
}
}
}
+ free(depend);
}
}
}
@@ -306,17 +310,21 @@ alpm_list_t *_alpm_checkdeps(pmtrans_t *trans, pmdb_t *db, pmtranstype_t op,
for(j = alpm_pkg_get_depends(tp); j; j = j->next) {
/* split into name/version pairs */
- _alpm_splitdep((char *)j->data, &depend);
+ pmdepend_t *depend = _alpm_splitdep((char*)j->data);
+ if(depend == NULL) {
+ continue;
+ }
+
found = 0;
/* check database for literal packages */
for(k = _alpm_db_get_pkgcache(db); k && !found; k = k->next) {
pmpkg_t *p = (pmpkg_t *)k->data;
- found = _alpm_depcmp(p, &depend);
+ found = _alpm_depcmp(p, depend);
}
/* check database for provides matches */
if(!found) {
alpm_list_t *m;
- for(m = _alpm_db_whatprovides(db, depend.name); m && !found; m = m->next) {
+ for(m = _alpm_db_whatprovides(db, depend->name); m && !found; m = m->next) {
/* look for a match that isn't one of the packages we're trying
* to install. this way, if we match against a to-be-installed
* package, we'll defer to the NEW one, not the one already
@@ -334,27 +342,28 @@ alpm_list_t *_alpm_checkdeps(pmtrans_t *trans, pmdb_t *db, pmtranstype_t op,
continue;
}
- found = _alpm_depcmp(p, &depend);
+ found = _alpm_depcmp(p, depend);
}
FREELISTPTR(k);
}
/* check other targets */
for(k = packages; k && !found; k = k->next) {
pmpkg_t *p = k->data;
- found = _alpm_depcmp(p, &depend);
+ found = _alpm_depcmp(p, depend);
}
/* else if still not found... */
if(!found) {
_alpm_log(PM_LOG_DEBUG, _("missing dependency '%s' for package '%s'"),
- depend.name, alpm_pkg_get_name(tp));
- miss = _alpm_depmiss_new(alpm_pkg_get_name(tp), PM_DEP_TYPE_DEPEND, depend.mod,
- depend.name, depend.version);
+ depend->name, alpm_pkg_get_name(tp));
+ miss = _alpm_depmiss_new(alpm_pkg_get_name(tp), PM_DEP_TYPE_DEPEND, depend->mod,
+ depend->name, depend->version);
if(!_alpm_depmiss_isin(miss, baddeps)) {
baddeps = alpm_list_add(baddeps, miss);
} else {
FREE(miss);
}
}
+ free(depend);
}
}
} else if(op == PM_TRANS_TYPE_REMOVE) {
@@ -412,47 +421,49 @@ alpm_list_t *_alpm_checkdeps(pmtrans_t *trans, pmdb_t *db, pmtranstype_t op,
return(baddeps);
}
-int _alpm_splitdep(char *depstr, pmdepend_t *depend)
+pmdepend_t *_alpm_splitdep(const char *depstring)
{
- char *str = NULL, *ptr = NULL;
+ pmdepend_t *depend;
+ char *ptr = NULL;
- if(depstr == NULL || depend == NULL) {
- return(-1);
+ if(depstring == NULL) {
+ return(NULL);
+ }
+
+ depend = (pmdepend_t *)malloc(sizeof(pmdepend_t));
+ if(depend == NULL) {
+ _alpm_log(PM_LOG_ERROR, _("malloc failure: could not allocate %d bytes"), sizeof(pmdepend_t));
+ return(NULL);
}
- depend->mod = 0;
- depend->name[0] = 0;
- depend->version[0] = 0;
-
- str = strdup(depstr);
-
- if((ptr = strstr(str, ">="))) {
+ /* Find a version comparator if one exists. If it does, set the type and
+ * increment the ptr accordingly so we can copy the right strings. */
+ if((ptr = strstr(depstring, ">="))) {
depend->mod = PM_DEP_MOD_GE;
- } else if((ptr = strstr(str, "<="))) {
+ *ptr = '\0';
+ ptr += 2;
+ } else if((ptr = strstr(depstring, "<="))) {
depend->mod = PM_DEP_MOD_LE;
- } else if((ptr = strstr(str, "="))) {
+ *ptr = '\0';
+ ptr += 2;
+ } else if((ptr = strstr(depstring, "="))) {
depend->mod = PM_DEP_MOD_EQ;
+ *ptr = '\0';
+ ptr += 1;
} else {
- /* no version specified - accept any */
+ /* no version specified - copy in the name and return it */
depend->mod = PM_DEP_MOD_ANY;
- STRNCPY(depend->name, str, PKG_NAME_LEN);
+ strncpy(depend->name, depstring, PKG_NAME_LEN);
+ depend->version[0] = '\0';
+ return(depend);
}
- if(ptr == NULL) {
- FREE(str);
- return(0);
- }
- *ptr = '\0';
- STRNCPY(depend->name, str, PKG_NAME_LEN);
- ptr++;
- if(depend->mod != PM_DEP_MOD_EQ) {
- ptr++;
- }
-
- STRNCPY(depend->version, ptr, PKG_VERSION_LEN);
- FREE(str);
+ /* if we get here, we have a version comparator, copy the right parts
+ * to the right places */
+ strncpy(depend->name, depstring, PKG_NAME_LEN);
+ strncpy(depend->version, ptr, PKG_VERSION_LEN);
- return(0);
+ return(depend);
}
/* These parameters are messy. We check if this package, given a list of
@@ -503,19 +514,19 @@ alpm_list_t *_alpm_removedeps(pmdb_t *db, alpm_list_t *targs)
for(i = targs; i; i = i->next) {
pmpkg_t *pkg = i->data;
for(j = alpm_pkg_get_depends(pkg); j; j = j->next) {
- pmdepend_t depend;
- pmpkg_t *dep;
- if(_alpm_splitdep(j->data, &depend)) {
+ pmdepend_t *depend = _alpm_splitdep(j->data);
+ pmpkg_t *deppkg;
+ if(depend == NULL) {
continue;
}
- dep = _alpm_db_get_pkgfromcache(db, depend.name);
- if(dep == NULL) {
+ deppkg = _alpm_db_get_pkgfromcache(db, depend->name);
+ if(deppkg == NULL) {
/* package not found... look for a provision instead */
- alpm_list_t *provides = _alpm_db_whatprovides(db, depend.name);
+ alpm_list_t *provides = _alpm_db_whatprovides(db, depend->name);
if(!provides) {
/* Not found, that's fine, carry on */
- _alpm_log(PM_LOG_DEBUG, _("cannot find package \"%s\" or anything that provides it!"), depend.name);
+ _alpm_log(PM_LOG_DEBUG, _("cannot find package \"%s\" or anything that provides it!"), depend->name);
continue;
}
for(k = provides; k; k = k->next) {
@@ -531,8 +542,8 @@ alpm_list_t *_alpm_removedeps(pmdb_t *db, alpm_list_t *targs)
}
}
FREELISTPTR(provides);
- } else if(can_remove_package(db, dep, newtargs)) {
- pmpkg_t *pkg = _alpm_pkg_new(dep->name, dep->version);
+ } else if(can_remove_package(db, deppkg, newtargs)) {
+ pmpkg_t *pkg = _alpm_pkg_new(deppkg->name, deppkg->version);
_alpm_log(PM_LOG_DEBUG, _("adding '%s' to the targets"), alpm_pkg_get_name(pkg));
@@ -540,6 +551,7 @@ alpm_list_t *_alpm_removedeps(pmdb_t *db, alpm_list_t *targs)
newtargs = alpm_list_add(newtargs, pkg);
newtargs = _alpm_removedeps(db, newtargs);
}
+ free(depend);
}
}

Copyright © 2002-2022 Judd Vinet and Aaron Griffin. Copyright © 2022 Erich Eckner.
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