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Diffstat (limited to '')
| -rw-r--r-- | termdecide.c | 302 |
1 files changed, 302 insertions, 0 deletions
diff --git a/termdecide.c b/termdecide.c new file mode 100644 index 0000000..6ff9590 --- /dev/null +++ b/termdecide.c @@ -0,0 +1,302 @@ +/* This file is part of "reprepro" + * Copyright (C) 2004,2005,2007,2009,2016 Bernhard R. Link + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02111-1301 USA + */ +#include <config.h> + +#include <errno.h> +#include <assert.h> +#include <unistd.h> +#include <stdlib.h> +#include <stdio.h> +#include <ctype.h> +#include <string.h> +#include "error.h" +#include "mprintf.h" +#include "strlist.h" +#include "names.h" +#include "chunks.h" +#include "globmatch.h" +#include "dpkgversions.h" +#include "terms.h" +#include "termdecide.h" + +static inline bool check_field(enum term_comparison c, const char *value, const char *with) { + if (c == tc_none) { + return true; + } else if (c == tc_globmatch) { + return globmatch(value, with); + } else if (c == tc_notglobmatch) { + return !globmatch(value, with); + } else { + int i; + i = strcmp(value, with); + if (i < 0) + return c == tc_strictless + || c == tc_lessorequal + || c == tc_notequal; + else if (i > 0) + return c == tc_strictmore + || c == tc_moreorequal + || c == tc_notequal; + else + return c == tc_lessorequal + || c == tc_moreorequal + || c == tc_equal; + } +} + +/* this has a target argument instead of using package->target + * as the package might come from one distribution/architecture/... + * and the decision being about adding it somewhere else */ +retvalue term_decidepackage(const term *condition, struct package *package, struct target *target) { + const struct term_atom *atom = condition; + + while (atom != NULL) { + bool correct; char *value; + enum term_comparison c = atom->comparison; + retvalue r; + + if (atom->isspecial) { + correct = atom->special.type->compare(c, + &atom->special.comparewith, + package, target); + } else { + r = chunk_getvalue(package->control, + atom->generic.key, &value); + if (RET_WAS_ERROR(r)) + return r; + if (r == RET_NOTHING) { + correct = (c == tc_notequal + || c == tc_notglobmatch); + } else { + correct = check_field(c, value, + atom->generic.comparewith); + free(value); + } + } + if (atom->negated) + correct = !correct; + if (correct) { + atom = atom->nextiftrue; + } else { + atom = atom->nextiffalse; + if (atom == NULL) { + /* do not include */ + return RET_NOTHING; + } + } + + } + /* do include */ + return RET_OK; +} + +static retvalue parsestring(enum term_comparison c, const char *value, size_t len, struct compare_with *v) { + if (c == tc_none) { + fprintf(stderr, +"Error: Special formula predicates (those starting with '$') are always\n" +"defined, thus specifying them without parameter to compare against\n" +"makes not sense!\n"); + return RET_ERROR; + } + v->pointer = strndup(value, len); + if (FAILEDTOALLOC(v->pointer)) + return RET_ERROR_OOM; + return RET_OK; +} +// TODO: check for well-formed versions +#define parseversion parsestring + +static bool comparesource(enum term_comparison c, const struct compare_with *v, void *d1, UNUSED(void *d2)) { + struct package *package = d1; + retvalue r; + + r = package_getsource(package); + if (!RET_IS_OK(r)) + return false; + return check_field(c, package->source, v->pointer); +} + +static inline bool compare_dpkgversions(enum term_comparison c, const char *version, const char *param) { + if (c != tc_globmatch && c != tc_notglobmatch) { + int cmp; + retvalue r; + + r = dpkgversions_cmp(version, param, &cmp); + if (RET_IS_OK(r)) { + if (cmp < 0) + return c == tc_strictless + || c == tc_lessorequal + || c == tc_notequal; + else if (cmp > 0) + return c == tc_strictmore + || c == tc_moreorequal + || c == tc_notequal; + else + return c == tc_lessorequal + || c == tc_moreorequal + || c == tc_equal; + } else + return false; + } else + return check_field(c, version, param); +} + +static bool compareversion(enum term_comparison c, const struct compare_with *v, void *d1, UNUSED(void *d2)) { + struct package *package = d1; + retvalue r; + + r = package_getversion(package); + if (!RET_IS_OK(r)) + return false; + return compare_dpkgversions(c, package->version, v->pointer); +} +static bool comparesourceversion(enum term_comparison c, const struct compare_with *v, void *d1, UNUSED(void *d2)) { + struct package *package = d1; + retvalue r; + + r = package_getsource(package); + if (!RET_IS_OK(r)) + return false; + return compare_dpkgversions(c, package->sourceversion, v->pointer); +} + +static void freestring(UNUSED(enum term_comparison c), struct compare_with *d) { + free(d->pointer); +} +static void freeatom(enum term_comparison c, struct compare_with *d) { + if (c != tc_equal && c != tc_notequal) + free(d->pointer); +} + +static retvalue parsetype(enum term_comparison c, const char *value, size_t len, struct compare_with *v) { + if (c == tc_none) { + fprintf(stderr, +"Error: $Type is always defined, it does not make sense without parameter\n" +"to compare against!\n"); + return RET_ERROR; + } + if (c != tc_equal && c != tc_notequal) { + v->pointer = strndup(value, len); + if (FAILEDTOALLOC(v->pointer)) + return RET_ERROR_OOM; + return RET_OK; + } + v->number = packagetype_find_l(value, len); + if (atom_defined(v->number)) + return RET_OK; + fprintf(stderr, "Unknown package type '%.*s' in formula!\n", + (int)len, value); + return RET_ERROR; +} + +static retvalue parsearchitecture(enum term_comparison c, const char *value, size_t len, struct compare_with *v) { + if (c == tc_none) { + fprintf(stderr, +"Error: $Architecture is always defined, it does not make sense without parameter\n" +"to compare against!\n"); + return RET_ERROR; + } + if (c != tc_equal && c != tc_notequal) { + v->pointer = strndup(value, len); + if (FAILEDTOALLOC(v->pointer)) + return RET_ERROR_OOM; + return RET_OK; + } + v->number = architecture_find_l(value, len); + if (atom_defined(v->number)) + return RET_OK; + fprintf(stderr, +"Unknown architecture '%.*s' in formula (must be listed in conf/distributions to be known)!\n", + (int)len, value); + return RET_ERROR; +} + +static retvalue parsecomponent(enum term_comparison c, const char *value, size_t len, struct compare_with *v) { + if (c == tc_none) { + fprintf(stderr, +"Error: $Component is always defined, it does not make sense without parameter\n" +"to compare against!\n"); + return RET_ERROR; + } + if (c != tc_equal && c != tc_notequal) { + v->pointer = strndup(value, len); + if (FAILEDTOALLOC(v->pointer)) + return RET_ERROR_OOM; + return RET_OK; + } + v->number = component_find_l(value, len); + if (atom_defined(v->number)) + return RET_OK; + fprintf(stderr, +"Unknown component '%.*s' in formula (must be listed in conf/distributions to be known)!\n", + (int)len, value); + return RET_ERROR; +} + +static bool comparetype(enum term_comparison c, const struct compare_with *v, UNUSED( void *d1), void *d2) { + const struct target *target = d2; + + if (c == tc_equal) + return v->number == target->packagetype; + else if (c == tc_notequal) + return v->number != target->packagetype; + else + return check_field(c, + atoms_packagetypes[target->packagetype], + v->pointer); + +} +static bool comparearchitecture(enum term_comparison c, const struct compare_with *v, UNUSED(void *d1), void *d2) { + const struct target *target = d2; + + if (c == tc_equal) + return v->number == target->architecture; + else if (c == tc_notequal) + return v->number != target->architecture; + else + return check_field(c, + atoms_architectures[target->architecture], + v->pointer); +} +static bool comparecomponent(enum term_comparison c, const struct compare_with *v, UNUSED(void *d1), void *d2) { + const struct target *target = d2; + + if (c == tc_equal) + return v->number == target->component; + else if (c == tc_notequal) + return v->number != target->component; + else + return check_field(c, + atoms_components[target->component], + v->pointer); +} + +static struct term_special targetdecisionspecial[] = { + {"$Source", parsestring, comparesource, freestring}, + {"$SourceVersion", parseversion, comparesourceversion, freestring}, + {"$Version", parseversion, compareversion, freestring}, + {"$Architecture", parsearchitecture, comparearchitecture, freeatom}, + {"$Component", parsecomponent, comparecomponent, freeatom}, + {"$Type", parsetype, comparetype, freeatom}, + {"$PackageType", parsetype, comparetype, freeatom}, + {NULL, NULL, NULL, NULL} +}; + +retvalue term_compilefortargetdecision(term **term_p, const char *formula) { + return term_compile(term_p, formula, + T_GLOBMATCH|T_OR|T_BRACKETS|T_NEGATION|T_VERSION|T_NOTEQUAL, + targetdecisionspecial); +} |