pkgconf/libpkgconf/pkg.c

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2011-07-25 02:03:17 +00:00
/*
* pkg.c
* higher-level dependency graph compilation, management and manipulation
2011-07-25 02:03:17 +00:00
*
* Copyright (c) 2011, 2012, 2013 pkgconf authors (see AUTHORS).
2011-07-25 02:03:17 +00:00
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* This software is provided 'as is' and without any warranty, express or
* implied. In no event shall the authors be liable for any damages arising
* from the use of this software.
2011-07-25 02:03:17 +00:00
*/
#include <libpkgconf/config.h>
#include <libpkgconf/stdinc.h>
2015-09-06 14:35:08 +00:00
#include <libpkgconf/libpkgconf.h>
2011-07-25 02:03:17 +00:00
/*
* !doc
*
* libpkgconf `pkg` module
* =======================
*
* The `pkg` module provides dependency resolution services and the overall `.pc` file parsing
* routines.
*/
#ifdef _WIN32
# define PKG_CONFIG_REG_KEY "Software\\pkgconfig\\PKG_CONFIG_PATH"
# undef PKG_DEFAULT_PATH
# define PKG_DEFAULT_PATH "../lib/pkgconfig;../share/pkgconfig"
2017-06-06 03:54:57 +00:00
# define strncasecmp _strnicmp
# define strcasecmp _stricmp
#endif
#define PKG_CONFIG_EXT ".pc"
static unsigned int
pkgconf_pkg_traverse_main(pkgconf_client_t *client,
pkgconf_pkg_t *root,
pkgconf_pkg_traverse_func_t func,
void *data,
int maxdepth,
unsigned int skip_flags);
static inline bool
str_has_suffix(const char *str, const char *suffix)
{
size_t str_len = strlen(str);
size_t suf_len = strlen(suffix);
if (str_len < suf_len)
return false;
return !strncasecmp(str + str_len - suf_len, suffix, suf_len);
}
static char *
pkg_get_parent_dir(pkgconf_pkg_t *pkg)
{
char buf[PKGCONF_ITEM_SIZE], *pathbuf;
pkgconf_strlcpy(buf, pkg->filename, sizeof buf);
pathbuf = strrchr(buf, PKG_DIR_SEP_S);
if (pathbuf == NULL)
pathbuf = strrchr(buf, '/');
if (pathbuf != NULL)
pathbuf[0] = '\0';
return strdup(buf);
}
typedef void (*pkgconf_pkg_parser_keyword_func_t)(pkgconf_client_t *client, pkgconf_pkg_t *pkg, const char *keyword, const size_t lineno, const ptrdiff_t offset, const char *value);
typedef struct {
const char *keyword;
const pkgconf_pkg_parser_keyword_func_t func;
const ptrdiff_t offset;
} pkgconf_pkg_parser_keyword_pair_t;
static int pkgconf_pkg_parser_keyword_pair_cmp(const void *key, const void *ptr)
{
const pkgconf_pkg_parser_keyword_pair_t *pair = ptr;
return strcasecmp(key, pair->keyword);
}
static void
pkgconf_pkg_parser_tuple_func(pkgconf_client_t *client, pkgconf_pkg_t *pkg, const char *keyword, const size_t lineno, const ptrdiff_t offset, const char *value)
{
(void) keyword;
(void) lineno;
char **dest = (char **)((char *) pkg + offset);
*dest = pkgconf_tuple_parse(client, &pkg->vars, value, pkg->flags);
}
static void
pkgconf_pkg_parser_version_func(pkgconf_client_t *client, pkgconf_pkg_t *pkg, const char *keyword, const size_t lineno, const ptrdiff_t offset, const char *value)
{
(void) keyword;
(void) lineno;
char *p, *i;
size_t len;
char **dest = (char **)((char *) pkg + offset);
/* cut at any detected whitespace */
p = pkgconf_tuple_parse(client, &pkg->vars, value, pkg->flags);
len = strcspn(p, " \t");
if (len != strlen(p))
{
i = p + (ptrdiff_t) len;
*i = '\0';
pkgconf_warn(client, "%s:" SIZE_FMT_SPECIFIER ": warning: malformed version field with whitespace, trimming to [%s]\n", pkg->filename,
lineno, p);
}
*dest = p;
}
static void
pkgconf_pkg_parser_fragment_func(pkgconf_client_t *client, pkgconf_pkg_t *pkg, const char *keyword, const size_t lineno, const ptrdiff_t offset, const char *value)
{
pkgconf_list_t *dest = (pkgconf_list_t *)((char *) pkg + offset);
bool ret = pkgconf_fragment_parse(client, dest, &pkg->vars, value, pkg->flags);
if (!ret)
{
pkgconf_warn(client, "%s:" SIZE_FMT_SPECIFIER ": warning: unable to parse field '%s' into an argument vector, value [%s]\n", pkg->filename,
lineno, keyword, value);
}
}
static void
pkgconf_pkg_parser_dependency_func(pkgconf_client_t *client, pkgconf_pkg_t *pkg, const char *keyword, const size_t lineno, const ptrdiff_t offset, const char *value)
{
(void) keyword;
(void) lineno;
pkgconf_list_t *dest = (pkgconf_list_t *)((char *) pkg + offset);
pkgconf_dependency_parse(client, pkg, dest, value, 0);
}
/* a variant of pkgconf_pkg_parser_dependency_func which colors the dependency node as an "internal" dependency. */
static void
pkgconf_pkg_parser_internal_dependency_func(pkgconf_client_t *client, pkgconf_pkg_t *pkg, const char *keyword, const size_t lineno, const ptrdiff_t offset, const char *value)
{
(void) keyword;
(void) lineno;
pkgconf_list_t *dest = (pkgconf_list_t *)((char *) pkg + offset);
pkgconf_dependency_parse(client, pkg, dest, value, PKGCONF_PKG_DEPF_INTERNAL);
}
/* a variant of pkgconf_pkg_parser_dependency_func which colors the dependency node as a "private" dependency. */
static void
pkgconf_pkg_parser_private_dependency_func(pkgconf_client_t *client, pkgconf_pkg_t *pkg, const char *keyword, const size_t lineno, const ptrdiff_t offset, const char *value)
{
(void) keyword;
(void) lineno;
pkgconf_list_t *dest = (pkgconf_list_t *)((char *) pkg + offset);
pkgconf_dependency_parse(client, pkg, dest, value, PKGCONF_PKG_DEPF_PRIVATE);
}
/* keep this in alphabetical order */
static const pkgconf_pkg_parser_keyword_pair_t pkgconf_pkg_parser_keyword_funcs[] = {
{"CFLAGS", pkgconf_pkg_parser_fragment_func, offsetof(pkgconf_pkg_t, cflags)},
{"CFLAGS.private", pkgconf_pkg_parser_fragment_func, offsetof(pkgconf_pkg_t, cflags_private)},
{"Conflicts", pkgconf_pkg_parser_dependency_func, offsetof(pkgconf_pkg_t, conflicts)},
{"Copyright", pkgconf_pkg_parser_tuple_func, offsetof(pkgconf_pkg_t, copyright)},
{"Description", pkgconf_pkg_parser_tuple_func, offsetof(pkgconf_pkg_t, description)},
{"LIBS", pkgconf_pkg_parser_fragment_func, offsetof(pkgconf_pkg_t, libs)},
{"LIBS.private", pkgconf_pkg_parser_fragment_func, offsetof(pkgconf_pkg_t, libs_private)},
{"License", pkgconf_pkg_parser_tuple_func, offsetof(pkgconf_pkg_t, license)},
{"Maintainer", pkgconf_pkg_parser_tuple_func, offsetof(pkgconf_pkg_t, maintainer)},
{"Name", pkgconf_pkg_parser_tuple_func, offsetof(pkgconf_pkg_t, realname)},
{"Provides", pkgconf_pkg_parser_dependency_func, offsetof(pkgconf_pkg_t, provides)},
{"Requires", pkgconf_pkg_parser_dependency_func, offsetof(pkgconf_pkg_t, required)},
{"Requires.internal", pkgconf_pkg_parser_internal_dependency_func, offsetof(pkgconf_pkg_t, requires_private)},
{"Requires.private", pkgconf_pkg_parser_private_dependency_func, offsetof(pkgconf_pkg_t, requires_private)},
{"URL", pkgconf_pkg_parser_tuple_func, offsetof(pkgconf_pkg_t, url)},
{"Version", pkgconf_pkg_parser_version_func, offsetof(pkgconf_pkg_t, version)},
};
static void
pkgconf_pkg_parser_keyword_set(void *opaque, const size_t lineno, const char *keyword, const char *value)
{
pkgconf_pkg_t *pkg = opaque;
const pkgconf_pkg_parser_keyword_pair_t *pair = bsearch(keyword,
pkgconf_pkg_parser_keyword_funcs, PKGCONF_ARRAY_SIZE(pkgconf_pkg_parser_keyword_funcs),
sizeof(pkgconf_pkg_parser_keyword_pair_t), pkgconf_pkg_parser_keyword_pair_cmp);
if (pair == NULL || pair->func == NULL)
return;
pair->func(pkg->owner, pkg, keyword, lineno, pair->offset, value);
}
static const char *
determine_prefix(const pkgconf_pkg_t *pkg, char *buf, size_t buflen)
{
char *pathiter;
pkgconf_strlcpy(buf, pkg->filename, buflen);
pkgconf_path_relocate(buf, buflen);
pathiter = strrchr(buf, PKG_DIR_SEP_S);
if (pathiter == NULL)
pathiter = strrchr(buf, '/');
if (pathiter != NULL)
pathiter[0] = '\0';
pathiter = strrchr(buf, PKG_DIR_SEP_S);
if (pathiter == NULL)
pathiter = strrchr(buf, '/');
if (pathiter == NULL)
return NULL;
/* parent dir is not pkgconfig, can't relocate then */
if (strcmp(pathiter + 1, "pkgconfig"))
return NULL;
/* okay, work backwards and do it again. */
pathiter[0] = '\0';
pathiter = strrchr(buf, PKG_DIR_SEP_S);
if (pathiter == NULL)
pathiter = strrchr(buf, '/');
if (pathiter == NULL)
return NULL;
pathiter[0] = '\0';
return buf;
}
/*
* Takes a real path and converts it to a pkgconf value. This means normalizing
* directory separators and escaping things (only spaces covered atm).
*
* This is useful for things like prefix/pcfiledir which might get injected
* at runtime and are not sourced from the .pc file.
*
* "C:\foo bar\baz" -> "C:/foo\ bar/baz"
* "/foo bar/baz" -> "/foo\ bar/baz"
*/
static char *
convert_path_to_value(const char *path)
{
libpkgconf: fix -Walloc-size GCC 14 introduces a new -Walloc-size included in -Wextra which gives: ``` libpkgconf/personality.c:260:11: warning: allocation of insufficient size '1' for type 'pkgconf_cross_personality_t' {aka 'struct pkgconf_cross_personality_'} with size '48' [-Walloc-size] libpkgconf/queue.c:46:33: warning: allocation of insufficient size '1' for type 'pkgconf_queue_t' {aka'struct pkgconf_queue_'} with size '16' [-Walloc-size] libpkgconf/client.c:164:33: warning: allocation of insufficient size '1' for type 'pkgconf_client_t' {aka 'struct pkgconf_client_'} with size '120' [-Walloc-size] libpkgconf/path.c:105:14: warning: allocation of insufficient size '1' for type 'pkgconf_path_t' {aka 'struct pkgconf_path_'} with size '24' [-Walloc-size] libpkgconf/path.c:237:22: warning: allocation of insufficient size '1' for type 'pkgconf_path_t' {aka 'struct pkgconf_path_'} with size '24' [-Walloc-size] libpkgconf/tuple.c:239:34: warning: allocation of insufficient size '1' for type 'pkgconf_tuple_t' {aka 'struct pkgconf_tuple_'} with size '24' [-Walloc-size] libpkgconf/dependency.c:133:13: warning: allocation of insufficient size '1' for type 'pkgconf_dependency_t' {aka 'struct pkgconf_dependency_'} with size '44' [-Walloc-size] libpkgconf/dependency.c:472:17: warning: allocation of insufficient size '1' for type 'pkgconf_dependency_t' {aka 'struct pkgconf_dependency_'} with size '44' [-Walloc-size] libpkgconf/fragment.c:146:22: warning: allocation of insufficient size '1' for type 'pkgconf_fragment_t' {aka 'struct pkgconf_fragment_'} with size '24' [-Walloc-size] libpkgconf/fragment.c:195:22: warning: allocation of insufficient size '1' for type 'pkgconf_fragment_t' {aka 'struct pkgconf_fragment_'} with size '24' [-Walloc-size] libpkgconf/fragment.c:356:14: warning: allocation of insufficient size '1' for type 'pkgconf_fragment_t' {aka 'struct pkgconf_fragment_'} with size '24' [-Walloc-size] libpkgconf/pkg.c:422:13: warning: allocation of insufficient size '1' for type 'pkgconf_pkg_t' {aka 'struct pkgconf_pkg_'} with size '188' [-Walloc-size] libpkgconf/client.c:164:33: warning: allocation of insufficient size '1' for type 'pkgconf_client_t' {aka 'struct pkgconf_client_'} with size '224' [-Walloc-size] libpkgconf/personality.c:260:11: warning: allocation of insufficient size '1' for type 'pkgconf_cross_personality_t' {aka 'struct pkgconf_cross_personality_'} with size '96' [-Walloc-size] libpkgconf/dependency.c:133:13: warning: allocation of insufficient size '1' for type 'pkgconf_dependency_t' {aka 'struct pkgconf_dependency_'} with size '80' [-Walloc-size] libpkgconf/dependency.c:472:17: warning: allocation of insufficient size '1' for type 'pkgconf_dependency_t' {aka 'struct pkgconf_dependency_'} with size '80' [-Walloc-size] libpkgconf/path.c:105:14: warning: allocation of insufficient size '1' for type 'pkgconf_path_t' {aka 'struct pkgconf_path_'} with size '48' [-Walloc-size] libpkgconf/path.c:237:22: warning: allocation of insufficient size '1' for type 'pkgconf_path_t' {aka 'struct pkgconf_path_'} with size '48' [-Walloc-size] libpkgconf/queue.c:46:33: warning: allocation of insufficient size '1' for type 'pkgconf_queue_t' {aka 'struct pkgconf_queue_'} with size '32' [-Walloc-size] libpkgconf/tuple.c:239:34: warning: allocation of insufficient size '1' for type 'pkgconf_tuple_t' {aka 'struct pkgconf_tuple_'} with size '48' [-Walloc-size] libpkgconf/fragment.c:146:22: warning: allocation of insufficient size '1' for type 'pkgconf_fragment_t' {aka 'struct pkgconf_fragment_'} with size '48' [-Walloc-size] libpkgconf/fragment.c:195:22: warning: allocation of insufficient size '1' for type 'pkgconf_fragment_t' {aka 'struct pkgconf_fragment_'} with size '48' [-Walloc-size] libpkgconf/fragment.c:356:14: warning: allocation of insufficient size '1' for type 'pkgconf_fragment_t' {aka 'struct pkgconf_fragment_'} with size '48' [-Walloc-size] libpkgconf/pkg.c:422:13: warning: allocation of insufficient size '1' for type 'pkgconf_pkg_t' {aka 'struct pkgconf_pkg_'} with size '360' [-Walloc-size] ``` The calloc prototype is: ``` void *calloc(size_t nmemb, size_t size); ``` So, just swap the number of members and size arguments to match the prototype, as we're initialising 1 struct of size `sizeof(struct ...)`. GCC then sees we're not doing anything wrong. The only exception there is for argv which I fixed while at it. Signed-off-by: Sam James <sam@gentoo.org>
2023-11-05 22:17:02 +00:00
char *buf = calloc(1, (strlen(path) + 1) * 2);
char *bptr = buf;
const char *i;
for (i = path; *i != '\0'; i++)
{
if (*i == PKG_DIR_SEP_S)
*bptr++ = '/';
else if (*i == ' ') {
*bptr++ = '\\';
*bptr++ = *i;
} else
*bptr++ = *i;
}
return buf;
}
static void
remove_additional_separators(char *buf)
{
char *p = buf;
while (*p) {
if (*p == '/') {
char *q;
q = ++p;
while (*q && *q == '/')
q++;
if (p != q)
memmove (p, q, strlen (q) + 1);
} else {
p++;
}
}
}
static void
canonicalize_path(char *buf)
{
remove_additional_separators(buf);
}
static bool
is_path_prefix_equal(const char *path1, const char *path2, size_t path2_len)
{
#ifdef _WIN32
return !_strnicmp(path1, path2, path2_len);
#else
return !strncmp(path1, path2, path2_len);
#endif
}
static void
pkgconf_pkg_parser_value_set(void *opaque, const size_t lineno, const char *keyword, const char *value)
{
char canonicalized_value[PKGCONF_ITEM_SIZE];
pkgconf_pkg_t *pkg = opaque;
(void) lineno;
pkgconf_strlcpy(canonicalized_value, value, sizeof canonicalized_value);
canonicalize_path(canonicalized_value);
/* Some pc files will use absolute paths for all of their directories
* which is broken when redefining the prefix. We try to outsmart the
* file and rewrite any directory that starts with the same prefix.
*/
if (pkg->owner->flags & PKGCONF_PKG_PKGF_REDEFINE_PREFIX && pkg->orig_prefix
&& is_path_prefix_equal(canonicalized_value, pkg->orig_prefix->value, strlen(pkg->orig_prefix->value)))
{
char newvalue[PKGCONF_ITEM_SIZE];
pkgconf_strlcpy(newvalue, pkg->prefix->value, sizeof newvalue);
pkgconf_strlcat(newvalue, canonicalized_value + strlen(pkg->orig_prefix->value), sizeof newvalue);
pkgconf_tuple_add(pkg->owner, &pkg->vars, keyword, newvalue, false, pkg->flags);
}
else if (strcmp(keyword, pkg->owner->prefix_varname) || !(pkg->owner->flags & PKGCONF_PKG_PKGF_REDEFINE_PREFIX))
pkgconf_tuple_add(pkg->owner, &pkg->vars, keyword, value, true, pkg->flags);
else
{
char pathbuf[PKGCONF_ITEM_SIZE];
const char *relvalue = determine_prefix(pkg, pathbuf, sizeof pathbuf);
if (relvalue != NULL)
{
char *prefix_value = convert_path_to_value(relvalue);
pkg->orig_prefix = pkgconf_tuple_add(pkg->owner, &pkg->vars, "orig_prefix", canonicalized_value, true, pkg->flags);
pkg->prefix = pkgconf_tuple_add(pkg->owner, &pkg->vars, keyword, prefix_value, false, pkg->flags);
free(prefix_value);
}
else
pkgconf_tuple_add(pkg->owner, &pkg->vars, keyword, value, true, pkg->flags);
}
}
typedef struct {
const char *field;
const ptrdiff_t offset;
} pkgconf_pkg_validity_check_t;
static const pkgconf_pkg_validity_check_t pkgconf_pkg_validations[] = {
{"Name", offsetof(pkgconf_pkg_t, realname)},
{"Description", offsetof(pkgconf_pkg_t, description)},
{"Version", offsetof(pkgconf_pkg_t, version)},
};
static const pkgconf_parser_operand_func_t pkg_parser_funcs[256] = {
[':'] = pkgconf_pkg_parser_keyword_set,
['='] = pkgconf_pkg_parser_value_set
};
static void pkg_warn_func(pkgconf_pkg_t *pkg, const char *fmt, ...) PRINTFLIKE(2, 3);
static void
pkg_warn_func(pkgconf_pkg_t *pkg, const char *fmt, ...)
{
char buf[PKGCONF_ITEM_SIZE];
va_list va;
va_start(va, fmt);
vsnprintf(buf, sizeof buf, fmt, va);
va_end(va);
pkgconf_warn(pkg->owner, "%s", buf);
}
static bool
pkgconf_pkg_validate(const pkgconf_client_t *client, const pkgconf_pkg_t *pkg)
{
size_t i;
bool valid = true;
for (i = 0; i < PKGCONF_ARRAY_SIZE(pkgconf_pkg_validations); i++)
{
char **p = (char **)((char *) pkg + pkgconf_pkg_validations[i].offset);
if (*p != NULL)
continue;
pkgconf_warn(client, "%s: warning: file does not declare a `%s' field\n", pkg->filename, pkgconf_pkg_validations[i].field);
valid = false;
}
return valid;
}
/*
* !doc
*
* .. c:function:: pkgconf_pkg_t *pkgconf_pkg_new_from_file(const pkgconf_client_t *client, const char *filename, FILE *f, unsigned int flags)
*
* Parse a .pc file into a pkgconf_pkg_t object structure.
*
* :param pkgconf_client_t* client: The pkgconf client object to use for dependency resolution.
* :param char* filename: The filename of the package file (including full path).
* :param FILE* f: The file object to read from.
* :param uint flags: The flags to use when parsing.
* :returns: A ``pkgconf_pkg_t`` object which contains the package data.
* :rtype: pkgconf_pkg_t *
*/
pkgconf_pkg_t *
pkgconf_pkg_new_from_file(pkgconf_client_t *client, const char *filename, FILE *f, unsigned int flags)
{
pkgconf_pkg_t *pkg;
2012-07-26 05:12:29 +00:00
char *idptr;
libpkgconf: fix -Walloc-size GCC 14 introduces a new -Walloc-size included in -Wextra which gives: ``` libpkgconf/personality.c:260:11: warning: allocation of insufficient size '1' for type 'pkgconf_cross_personality_t' {aka 'struct pkgconf_cross_personality_'} with size '48' [-Walloc-size] libpkgconf/queue.c:46:33: warning: allocation of insufficient size '1' for type 'pkgconf_queue_t' {aka'struct pkgconf_queue_'} with size '16' [-Walloc-size] libpkgconf/client.c:164:33: warning: allocation of insufficient size '1' for type 'pkgconf_client_t' {aka 'struct pkgconf_client_'} with size '120' [-Walloc-size] libpkgconf/path.c:105:14: warning: allocation of insufficient size '1' for type 'pkgconf_path_t' {aka 'struct pkgconf_path_'} with size '24' [-Walloc-size] libpkgconf/path.c:237:22: warning: allocation of insufficient size '1' for type 'pkgconf_path_t' {aka 'struct pkgconf_path_'} with size '24' [-Walloc-size] libpkgconf/tuple.c:239:34: warning: allocation of insufficient size '1' for type 'pkgconf_tuple_t' {aka 'struct pkgconf_tuple_'} with size '24' [-Walloc-size] libpkgconf/dependency.c:133:13: warning: allocation of insufficient size '1' for type 'pkgconf_dependency_t' {aka 'struct pkgconf_dependency_'} with size '44' [-Walloc-size] libpkgconf/dependency.c:472:17: warning: allocation of insufficient size '1' for type 'pkgconf_dependency_t' {aka 'struct pkgconf_dependency_'} with size '44' [-Walloc-size] libpkgconf/fragment.c:146:22: warning: allocation of insufficient size '1' for type 'pkgconf_fragment_t' {aka 'struct pkgconf_fragment_'} with size '24' [-Walloc-size] libpkgconf/fragment.c:195:22: warning: allocation of insufficient size '1' for type 'pkgconf_fragment_t' {aka 'struct pkgconf_fragment_'} with size '24' [-Walloc-size] libpkgconf/fragment.c:356:14: warning: allocation of insufficient size '1' for type 'pkgconf_fragment_t' {aka 'struct pkgconf_fragment_'} with size '24' [-Walloc-size] libpkgconf/pkg.c:422:13: warning: allocation of insufficient size '1' for type 'pkgconf_pkg_t' {aka 'struct pkgconf_pkg_'} with size '188' [-Walloc-size] libpkgconf/client.c:164:33: warning: allocation of insufficient size '1' for type 'pkgconf_client_t' {aka 'struct pkgconf_client_'} with size '224' [-Walloc-size] libpkgconf/personality.c:260:11: warning: allocation of insufficient size '1' for type 'pkgconf_cross_personality_t' {aka 'struct pkgconf_cross_personality_'} with size '96' [-Walloc-size] libpkgconf/dependency.c:133:13: warning: allocation of insufficient size '1' for type 'pkgconf_dependency_t' {aka 'struct pkgconf_dependency_'} with size '80' [-Walloc-size] libpkgconf/dependency.c:472:17: warning: allocation of insufficient size '1' for type 'pkgconf_dependency_t' {aka 'struct pkgconf_dependency_'} with size '80' [-Walloc-size] libpkgconf/path.c:105:14: warning: allocation of insufficient size '1' for type 'pkgconf_path_t' {aka 'struct pkgconf_path_'} with size '48' [-Walloc-size] libpkgconf/path.c:237:22: warning: allocation of insufficient size '1' for type 'pkgconf_path_t' {aka 'struct pkgconf_path_'} with size '48' [-Walloc-size] libpkgconf/queue.c:46:33: warning: allocation of insufficient size '1' for type 'pkgconf_queue_t' {aka 'struct pkgconf_queue_'} with size '32' [-Walloc-size] libpkgconf/tuple.c:239:34: warning: allocation of insufficient size '1' for type 'pkgconf_tuple_t' {aka 'struct pkgconf_tuple_'} with size '48' [-Walloc-size] libpkgconf/fragment.c:146:22: warning: allocation of insufficient size '1' for type 'pkgconf_fragment_t' {aka 'struct pkgconf_fragment_'} with size '48' [-Walloc-size] libpkgconf/fragment.c:195:22: warning: allocation of insufficient size '1' for type 'pkgconf_fragment_t' {aka 'struct pkgconf_fragment_'} with size '48' [-Walloc-size] libpkgconf/fragment.c:356:14: warning: allocation of insufficient size '1' for type 'pkgconf_fragment_t' {aka 'struct pkgconf_fragment_'} with size '48' [-Walloc-size] libpkgconf/pkg.c:422:13: warning: allocation of insufficient size '1' for type 'pkgconf_pkg_t' {aka 'struct pkgconf_pkg_'} with size '360' [-Walloc-size] ``` The calloc prototype is: ``` void *calloc(size_t nmemb, size_t size); ``` So, just swap the number of members and size arguments to match the prototype, as we're initialising 1 struct of size `sizeof(struct ...)`. GCC then sees we're not doing anything wrong. The only exception there is for argv which I fixed while at it. Signed-off-by: Sam James <sam@gentoo.org>
2023-11-05 22:17:02 +00:00
pkg = calloc(1, sizeof(pkgconf_pkg_t));
pkg->owner = client;
pkg->filename = strdup(filename);
pkg->pc_filedir = pkg_get_parent_dir(pkg);
pkg->flags = flags;
char *pc_filedir_value = convert_path_to_value(pkg->pc_filedir);
pkgconf_tuple_add(client, &pkg->vars, "pcfiledir", pc_filedir_value, true, pkg->flags);
free(pc_filedir_value);
/* If pc_filedir is outside of sysroot_dir, override sysroot_dir for this
* package.
* See https://github.com/pkgconf/pkgconf/issues/213
*/
if (client->sysroot_dir && strncmp(pkg->pc_filedir, client->sysroot_dir, strlen(client->sysroot_dir)))
pkgconf_tuple_add(client, &pkg->vars, "pc_sysrootdir", "", false, pkg->flags);
2012-07-26 05:12:29 +00:00
/* make module id */
if ((idptr = strrchr(pkg->filename, PKG_DIR_SEP_S)) != NULL)
idptr++;
else
idptr = pkg->filename;
#ifdef _WIN32
/* On Windows, both \ and / are allowed in paths, so we have to chop both.
* strrchr() took us to the last \ in that case, so we just have to see if
* it is followed by a /. If so, lop it off.
*/
char *mungeptr;
if ((mungeptr = strrchr(idptr, '/')) != NULL)
idptr = ++mungeptr;
#endif
pkg->id = strdup(idptr);
2012-07-26 05:12:29 +00:00
idptr = strrchr(pkg->id, '.');
if (idptr)
*idptr = '\0';
if (pkg->flags & PKGCONF_PKG_PROPF_UNINSTALLED)
{
idptr = strrchr(pkg->id, '-');
if (idptr)
*idptr = '\0';
}
pkgconf_parser_parse(f, pkg, pkg_parser_funcs, (pkgconf_parser_warn_func_t) pkg_warn_func, pkg->filename);
if (!pkgconf_pkg_validate(client, pkg))
{
pkgconf_warn(client, "%s: warning: skipping invalid file\n", pkg->filename);
pkgconf_pkg_free(client, pkg);
return NULL;
}
pkgconf_dependency_t *dep = pkgconf_dependency_add(client, &pkg->provides, pkg->id, pkg->version, PKGCONF_CMP_EQUAL, 0);
pkgconf_dependency_unref(dep->owner, dep);
return pkgconf_pkg_ref(client, pkg);
}
/*
* !doc
*
* .. c:function:: void pkgconf_pkg_free(pkgconf_client_t *client, pkgconf_pkg_t *pkg)
*
* Releases all releases for a given ``pkgconf_pkg_t`` object.
*
* :param pkgconf_client_t* client: The client which owns the ``pkgconf_pkg_t`` object, `pkg`.
* :param pkgconf_pkg_t* pkg: The package to free.
* :return: nothing
*/
2012-05-07 01:30:50 +00:00
void
pkgconf_pkg_free(pkgconf_client_t *client, pkgconf_pkg_t *pkg)
2012-05-07 01:30:50 +00:00
{
if (pkg == NULL)
return;
if (pkg->flags & PKGCONF_PKG_PROPF_STATIC && !(pkg->flags & PKGCONF_PKG_PROPF_VIRTUAL))
2012-05-07 02:09:26 +00:00
return;
pkgconf_cache_remove(client, pkg);
pkgconf_dependency_free(&pkg->required);
pkgconf_dependency_free(&pkg->requires_private);
pkgconf_dependency_free(&pkg->conflicts);
pkgconf_dependency_free(&pkg->provides);
2012-05-07 02:09:26 +00:00
pkgconf_fragment_free(&pkg->cflags);
pkgconf_fragment_free(&pkg->cflags_private);
pkgconf_fragment_free(&pkg->libs);
pkgconf_fragment_free(&pkg->libs_private);
2012-05-07 02:09:26 +00:00
pkgconf_tuple_free(&pkg->vars);
2012-05-07 02:09:26 +00:00
if (pkg->flags & PKGCONF_PKG_PROPF_VIRTUAL)
return;
2012-05-07 01:30:50 +00:00
if (pkg->id != NULL)
free(pkg->id);
if (pkg->filename != NULL)
free(pkg->filename);
if (pkg->realname != NULL)
free(pkg->realname);
if (pkg->version != NULL)
free(pkg->version);
if (pkg->description != NULL)
free(pkg->description);
if (pkg->url != NULL)
free(pkg->url);
if (pkg->pc_filedir != NULL)
free(pkg->pc_filedir);
if (pkg->license != NULL)
free(pkg->license);
if (pkg->maintainer != NULL)
free(pkg->maintainer);
if (pkg->copyright != NULL)
free(pkg->copyright);
if (pkg->why != NULL)
free(pkg->why);
2012-05-07 01:30:50 +00:00
free(pkg);
}
/*
* !doc
*
* .. c:function:: pkgconf_pkg_t *pkgconf_pkg_ref(const pkgconf_client_t *client, pkgconf_pkg_t *pkg)
*
* Adds an additional reference to the package object.
*
* :param pkgconf_client_t* client: The pkgconf client object which owns the package being referenced.
* :param pkgconf_pkg_t* pkg: The package object being referenced.
* :return: The package itself with an incremented reference count.
* :rtype: pkgconf_pkg_t *
*/
pkgconf_pkg_t *
pkgconf_pkg_ref(pkgconf_client_t *client, pkgconf_pkg_t *pkg)
{
if (pkg->owner != NULL && pkg->owner != client)
PKGCONF_TRACE(client, "WTF: client %p refers to package %p owned by other client %p", client, pkg, pkg->owner);
pkg->refcount++;
PKGCONF_TRACE(client, "%s refcount@%p: %d", pkg->id, pkg, pkg->refcount);
return pkg;
}
/*
* !doc
*
* .. c:function:: void pkgconf_pkg_unref(pkgconf_client_t *client, pkgconf_pkg_t *pkg)
*
* Releases a reference on the package object. If the reference count is 0, then also free the package.
*
* :param pkgconf_client_t* client: The pkgconf client object which owns the package being dereferenced.
* :param pkgconf_pkg_t* pkg: The package object being dereferenced.
* :return: nothing
*/
void
pkgconf_pkg_unref(pkgconf_client_t *client, pkgconf_pkg_t *pkg)
{
if (pkg->owner != NULL && pkg->owner != client)
PKGCONF_TRACE(client, "WTF: client %p unrefs package %p owned by other client %p", client, pkg, pkg->owner);
pkg->refcount--;
PKGCONF_TRACE(pkg->owner, "%s refcount@%p: %d", pkg->id, pkg, pkg->refcount);
if (pkg->refcount <= 0)
pkgconf_pkg_free(pkg->owner, pkg);
}
static inline pkgconf_pkg_t *
pkgconf_pkg_try_specific_path(pkgconf_client_t *client, const char *path, const char *name)
{
pkgconf_pkg_t *pkg = NULL;
FILE *f;
char locbuf[PKGCONF_ITEM_SIZE];
char uninst_locbuf[PKGCONF_ITEM_SIZE];
2017-02-05 02:35:49 +00:00
PKGCONF_TRACE(client, "trying path: %s for %s", path, name);
snprintf(locbuf, sizeof locbuf, "%s%c%s" PKG_CONFIG_EXT, path, PKG_DIR_SEP_S, name);
snprintf(uninst_locbuf, sizeof uninst_locbuf, "%s%c%s-uninstalled" PKG_CONFIG_EXT, path, PKG_DIR_SEP_S, name);
if (!(client->flags & PKGCONF_PKG_PKGF_NO_UNINSTALLED) && (f = fopen(uninst_locbuf, "r")) != NULL)
{
2017-02-25 21:53:50 +00:00
PKGCONF_TRACE(client, "found (uninstalled): %s", uninst_locbuf);
pkg = pkgconf_pkg_new_from_file(client, uninst_locbuf, f, PKGCONF_PKG_PROPF_UNINSTALLED);
}
else if ((f = fopen(locbuf, "r")) != NULL)
2017-02-05 02:35:49 +00:00
{
PKGCONF_TRACE(client, "found: %s", locbuf);
pkg = pkgconf_pkg_new_from_file(client, locbuf, f, 0);
2017-02-05 02:35:49 +00:00
}
return pkg;
}
static pkgconf_pkg_t *
pkgconf_pkg_scan_dir(pkgconf_client_t *client, const char *path, void *data, pkgconf_pkg_iteration_func_t func)
{
DIR *dir;
struct dirent *dirent;
pkgconf_pkg_t *outpkg = NULL;
dir = opendir(path);
if (dir == NULL)
return NULL;
2017-02-05 02:35:49 +00:00
PKGCONF_TRACE(client, "scanning dir [%s]", path);
for (dirent = readdir(dir); dirent != NULL; dirent = readdir(dir))
{
char filebuf[PKGCONF_ITEM_SIZE];
pkgconf_pkg_t *pkg;
FILE *f;
pkgconf_strlcpy(filebuf, path, sizeof filebuf);
pkgconf_strlcat(filebuf, "/", sizeof filebuf);
pkgconf_strlcat(filebuf, dirent->d_name, sizeof filebuf);
2012-07-26 05:01:40 +00:00
if (!str_has_suffix(filebuf, PKG_CONFIG_EXT))
continue;
2017-02-05 02:35:49 +00:00
PKGCONF_TRACE(client, "trying file [%s]", filebuf);
2012-07-26 05:01:40 +00:00
f = fopen(filebuf, "r");
if (f == NULL)
continue;
pkg = pkgconf_pkg_new_from_file(client, filebuf, f, 0);
if (pkg != NULL)
2012-07-26 05:01:40 +00:00
{
if (func(pkg, data))
{
outpkg = pkg;
goto out;
}
pkgconf_pkg_unref(client, pkg);
2012-07-26 05:01:40 +00:00
}
}
out:
closedir(dir);
return outpkg;
}
/*
* !doc
*
* .. c:function:: pkgconf_pkg_t *pkgconf_scan_all(pkgconf_client_t *client, void *data, pkgconf_pkg_iteration_func_t func)
*
* Iterates over all packages found in the `package directory list`, running ``func`` on them. If ``func`` returns true,
* then stop iteration and return the last iterated package.
*
* :param pkgconf_client_t* client: The pkgconf client object to use for dependency resolution.
* :param void* data: An opaque pointer to data to provide the iteration function with.
* :param pkgconf_pkg_iteration_func_t func: A function which is called for each package to determine if the package matches,
* always return ``false`` to iterate over all packages.
* :return: A package object reference if one is found by the scan function, else ``NULL``.
* :rtype: pkgconf_pkg_t *
*/
pkgconf_pkg_t *
pkgconf_scan_all(pkgconf_client_t *client, void *data, pkgconf_pkg_iteration_func_t func)
{
pkgconf_node_t *n;
pkgconf_pkg_t *pkg;
PKGCONF_FOREACH_LIST_ENTRY(client->dir_list.head, n)
{
pkgconf_path_t *pnode = n->data;
2017-02-25 21:53:50 +00:00
PKGCONF_TRACE(client, "scanning directory: %s", pnode->path);
if ((pkg = pkgconf_pkg_scan_dir(client, pnode->path, data, func)) != NULL)
return pkg;
}
return NULL;
}
#ifdef _WIN32
static pkgconf_pkg_t *
pkgconf_pkg_find_in_registry_key(pkgconf_client_t *client, HKEY hkey, const char *name)
{
pkgconf_pkg_t *pkg = NULL;
HKEY key;
int i = 0;
char buf[16384]; /* per registry limits */
DWORD bufsize = sizeof buf;
if (RegOpenKeyEx(hkey, PKG_CONFIG_REG_KEY,
0, KEY_READ, &key) != ERROR_SUCCESS)
return NULL;
while (RegEnumValue(key, i++, buf, &bufsize, NULL, NULL, NULL, NULL)
== ERROR_SUCCESS)
{
char pathbuf[PKGCONF_ITEM_SIZE];
DWORD type;
DWORD pathbuflen = sizeof pathbuf;
if (RegQueryValueEx(key, buf, NULL, &type, (LPBYTE) pathbuf, &pathbuflen)
== ERROR_SUCCESS && type == REG_SZ)
{
pkg = pkgconf_pkg_try_specific_path(client, pathbuf, name);
if (pkg != NULL)
break;
}
bufsize = sizeof buf;
}
RegCloseKey(key);
return pkg;
}
#endif
/*
* !doc
*
* .. c:function:: pkgconf_pkg_t *pkgconf_pkg_find(pkgconf_client_t *client, const char *name)
*
* Search for a package.
*
* :param pkgconf_client_t* client: The pkgconf client object to use for dependency resolution.
* :param char* name: The name of the package `atom` to use for searching.
* :return: A package object reference if the package was found, else ``NULL``.
* :rtype: pkgconf_pkg_t *
*/
pkgconf_pkg_t *
pkgconf_pkg_find(pkgconf_client_t *client, const char *name)
2011-07-25 02:03:17 +00:00
{
pkgconf_pkg_t *pkg = NULL;
pkgconf_node_t *n;
FILE *f;
2011-07-25 02:03:17 +00:00
2017-02-05 02:35:49 +00:00
PKGCONF_TRACE(client, "looking for: %s", name);
/* name might actually be a filename. */
if (str_has_suffix(name, PKG_CONFIG_EXT))
{
if ((f = fopen(name, "r")) != NULL)
{
2017-02-05 02:35:49 +00:00
PKGCONF_TRACE(client, "%s is a file", name);
pkg = pkgconf_pkg_new_from_file(client, name, f, 0);
if (pkg != NULL)
{
pkgconf_path_add(pkg->pc_filedir, &client->dir_list, true);
goto out;
}
}
}
/* check builtins */
if ((pkg = pkgconf_builtin_pkg_get(name)) != NULL)
2017-02-05 02:35:49 +00:00
{
PKGCONF_TRACE(client, "%s is a builtin", name);
return pkg;
2017-02-05 02:35:49 +00:00
}
/* check cache */
if (!(client->flags & PKGCONF_PKG_PKGF_NO_CACHE))
{
if ((pkg = pkgconf_cache_lookup(client, name)) != NULL)
2013-02-26 04:47:32 +00:00
{
2017-02-05 02:35:49 +00:00
PKGCONF_TRACE(client, "%s is cached", name);
2013-02-26 04:40:30 +00:00
return pkg;
2013-02-26 04:47:32 +00:00
}
}
PKGCONF_FOREACH_LIST_ENTRY(client->dir_list.head, n)
{
pkgconf_path_t *pnode = n->data;
pkg = pkgconf_pkg_try_specific_path(client, pnode->path, name);
if (pkg != NULL)
goto out;
}
#ifdef _WIN32
/* support getting PKG_CONFIG_PATH from registry */
pkg = pkgconf_pkg_find_in_registry_key(client, HKEY_CURRENT_USER, name);
if (!pkg)
pkg = pkgconf_pkg_find_in_registry_key(client, HKEY_LOCAL_MACHINE, name);
#endif
2012-05-07 02:09:26 +00:00
out:
pkgconf_cache_add(client, pkg);
2013-02-26 04:40:30 +00:00
2012-05-07 02:09:26 +00:00
return pkg;
2011-07-25 02:03:17 +00:00
}
2011-07-26 16:56:59 +00:00
/*
* !doc
*
* .. c:function:: int pkgconf_compare_version(const char *a, const char *b)
2011-07-26 16:56:59 +00:00
*
* Compare versions using RPM version comparison rules as described in the LSB.
*
* :param char* a: The first version to compare in the pair.
* :param char* b: The second version to compare in the pair.
* :return: -1 if the first version is less than, 0 if both versions are equal, 1 if the second version is less than.
* :rtype: int
2011-07-26 16:56:59 +00:00
*/
int
pkgconf_compare_version(const char *a, const char *b)
2011-07-26 16:56:59 +00:00
{
char oldch1, oldch2;
char buf1[PKGCONF_ITEM_SIZE], buf2[PKGCONF_ITEM_SIZE];
2011-07-26 16:56:59 +00:00
char *str1, *str2;
char *one, *two;
int ret;
bool isnum;
/* optimization: if version matches then it's the same version. */
if (a == NULL)
return -1;
if (b == NULL)
return 1;
2011-07-26 16:56:59 +00:00
if (!strcasecmp(a, b))
return 0;
pkgconf_strlcpy(buf1, a, sizeof buf1);
pkgconf_strlcpy(buf2, b, sizeof buf2);
2011-07-26 16:56:59 +00:00
one = buf1;
two = buf2;
2011-07-26 16:56:59 +00:00
while (*one || *two)
2011-07-26 16:56:59 +00:00
{
Avoid undefined behaviour with the ctype(3) functions. fix https://github.com/pkgconf/pkgconf/issues/291 As defined in the C standard: In all cases the argument is an int, the value of which shall be representable as an unsigned char or shall equal the value of the macro EOF. If the argument has any other value, the behavior is undefined. This is because they're designed to work with the int values returned by getc or fgetc; they need extra work to handle a char value. If EOF is -1 (as it almost always is), with 8-bit bytes, the allowed inputs to the ctype(3) functions are: {-1, 0, 1, 2, 3, ..., 255}. However, on platforms where char is signed, such as x86 with the usual ABI, code like char *ptr = ...; ... isspace(*ptr) ... may pass in values in the range: {-128, -127, -126, ..., -2, -1, 0, 1, ..., 127}. This has two problems: 1. Inputs in the set {-128, -127, -126, ..., -2} are forbidden. 2. The non-EOF byte 0xff is conflated with the value EOF = -1, so even though the input is not forbidden, it may give the wrong answer. Casting char to unsigned int first before passing the result to ctype(3) doesn't help: inputs like -128 are unchanged by this cast, because (on a two's-complement machine with 32-bit int and unsigned int), converting the signed char with integer value -128 to unsigned int gives integer value 2^32 - 128 = 0xffffff80, which is out of range, and which is converted in int back to -128, which is also out of range. It is necessary to cast char inputs to unsigned char first; you can then cast to unsigned int if you like but there's no need because the functions will always convert the argument to int by definition. So the above fragment needs to be: char *ptr = ...; ... isspace((unsigned char)*ptr) ... This patch changes unsigned int casts to unsigned char casts, and adds unsigned char casts where they are missing.
2023-03-17 19:32:58 +00:00
while (*one && !isalnum((unsigned char)*one) && *one != '~')
2011-07-26 16:56:59 +00:00
one++;
Avoid undefined behaviour with the ctype(3) functions. fix https://github.com/pkgconf/pkgconf/issues/291 As defined in the C standard: In all cases the argument is an int, the value of which shall be representable as an unsigned char or shall equal the value of the macro EOF. If the argument has any other value, the behavior is undefined. This is because they're designed to work with the int values returned by getc or fgetc; they need extra work to handle a char value. If EOF is -1 (as it almost always is), with 8-bit bytes, the allowed inputs to the ctype(3) functions are: {-1, 0, 1, 2, 3, ..., 255}. However, on platforms where char is signed, such as x86 with the usual ABI, code like char *ptr = ...; ... isspace(*ptr) ... may pass in values in the range: {-128, -127, -126, ..., -2, -1, 0, 1, ..., 127}. This has two problems: 1. Inputs in the set {-128, -127, -126, ..., -2} are forbidden. 2. The non-EOF byte 0xff is conflated with the value EOF = -1, so even though the input is not forbidden, it may give the wrong answer. Casting char to unsigned int first before passing the result to ctype(3) doesn't help: inputs like -128 are unchanged by this cast, because (on a two's-complement machine with 32-bit int and unsigned int), converting the signed char with integer value -128 to unsigned int gives integer value 2^32 - 128 = 0xffffff80, which is out of range, and which is converted in int back to -128, which is also out of range. It is necessary to cast char inputs to unsigned char first; you can then cast to unsigned int if you like but there's no need because the functions will always convert the argument to int by definition. So the above fragment needs to be: char *ptr = ...; ... isspace((unsigned char)*ptr) ... This patch changes unsigned int casts to unsigned char casts, and adds unsigned char casts where they are missing.
2023-03-17 19:32:58 +00:00
while (*two && !isalnum((unsigned char)*two) && *two != '~')
2011-07-26 17:05:14 +00:00
two++;
2011-07-26 16:56:59 +00:00
if (*one == '~' || *two == '~')
{
if (*one != '~')
2012-07-30 10:03:37 +00:00
return 1;
if (*two != '~')
return -1;
one++;
two++;
continue;
}
2011-07-26 16:56:59 +00:00
if (!(*one && *two))
break;
str1 = one;
str2 = two;
Avoid undefined behaviour with the ctype(3) functions. fix https://github.com/pkgconf/pkgconf/issues/291 As defined in the C standard: In all cases the argument is an int, the value of which shall be representable as an unsigned char or shall equal the value of the macro EOF. If the argument has any other value, the behavior is undefined. This is because they're designed to work with the int values returned by getc or fgetc; they need extra work to handle a char value. If EOF is -1 (as it almost always is), with 8-bit bytes, the allowed inputs to the ctype(3) functions are: {-1, 0, 1, 2, 3, ..., 255}. However, on platforms where char is signed, such as x86 with the usual ABI, code like char *ptr = ...; ... isspace(*ptr) ... may pass in values in the range: {-128, -127, -126, ..., -2, -1, 0, 1, ..., 127}. This has two problems: 1. Inputs in the set {-128, -127, -126, ..., -2} are forbidden. 2. The non-EOF byte 0xff is conflated with the value EOF = -1, so even though the input is not forbidden, it may give the wrong answer. Casting char to unsigned int first before passing the result to ctype(3) doesn't help: inputs like -128 are unchanged by this cast, because (on a two's-complement machine with 32-bit int and unsigned int), converting the signed char with integer value -128 to unsigned int gives integer value 2^32 - 128 = 0xffffff80, which is out of range, and which is converted in int back to -128, which is also out of range. It is necessary to cast char inputs to unsigned char first; you can then cast to unsigned int if you like but there's no need because the functions will always convert the argument to int by definition. So the above fragment needs to be: char *ptr = ...; ... isspace((unsigned char)*ptr) ... This patch changes unsigned int casts to unsigned char casts, and adds unsigned char casts where they are missing.
2023-03-17 19:32:58 +00:00
if (isdigit((unsigned char)*str1))
2011-07-26 16:56:59 +00:00
{
Avoid undefined behaviour with the ctype(3) functions. fix https://github.com/pkgconf/pkgconf/issues/291 As defined in the C standard: In all cases the argument is an int, the value of which shall be representable as an unsigned char or shall equal the value of the macro EOF. If the argument has any other value, the behavior is undefined. This is because they're designed to work with the int values returned by getc or fgetc; they need extra work to handle a char value. If EOF is -1 (as it almost always is), with 8-bit bytes, the allowed inputs to the ctype(3) functions are: {-1, 0, 1, 2, 3, ..., 255}. However, on platforms where char is signed, such as x86 with the usual ABI, code like char *ptr = ...; ... isspace(*ptr) ... may pass in values in the range: {-128, -127, -126, ..., -2, -1, 0, 1, ..., 127}. This has two problems: 1. Inputs in the set {-128, -127, -126, ..., -2} are forbidden. 2. The non-EOF byte 0xff is conflated with the value EOF = -1, so even though the input is not forbidden, it may give the wrong answer. Casting char to unsigned int first before passing the result to ctype(3) doesn't help: inputs like -128 are unchanged by this cast, because (on a two's-complement machine with 32-bit int and unsigned int), converting the signed char with integer value -128 to unsigned int gives integer value 2^32 - 128 = 0xffffff80, which is out of range, and which is converted in int back to -128, which is also out of range. It is necessary to cast char inputs to unsigned char first; you can then cast to unsigned int if you like but there's no need because the functions will always convert the argument to int by definition. So the above fragment needs to be: char *ptr = ...; ... isspace((unsigned char)*ptr) ... This patch changes unsigned int casts to unsigned char casts, and adds unsigned char casts where they are missing.
2023-03-17 19:32:58 +00:00
while (*str1 && isdigit((unsigned char)*str1))
2011-07-26 16:56:59 +00:00
str1++;
Avoid undefined behaviour with the ctype(3) functions. fix https://github.com/pkgconf/pkgconf/issues/291 As defined in the C standard: In all cases the argument is an int, the value of which shall be representable as an unsigned char or shall equal the value of the macro EOF. If the argument has any other value, the behavior is undefined. This is because they're designed to work with the int values returned by getc or fgetc; they need extra work to handle a char value. If EOF is -1 (as it almost always is), with 8-bit bytes, the allowed inputs to the ctype(3) functions are: {-1, 0, 1, 2, 3, ..., 255}. However, on platforms where char is signed, such as x86 with the usual ABI, code like char *ptr = ...; ... isspace(*ptr) ... may pass in values in the range: {-128, -127, -126, ..., -2, -1, 0, 1, ..., 127}. This has two problems: 1. Inputs in the set {-128, -127, -126, ..., -2} are forbidden. 2. The non-EOF byte 0xff is conflated with the value EOF = -1, so even though the input is not forbidden, it may give the wrong answer. Casting char to unsigned int first before passing the result to ctype(3) doesn't help: inputs like -128 are unchanged by this cast, because (on a two's-complement machine with 32-bit int and unsigned int), converting the signed char with integer value -128 to unsigned int gives integer value 2^32 - 128 = 0xffffff80, which is out of range, and which is converted in int back to -128, which is also out of range. It is necessary to cast char inputs to unsigned char first; you can then cast to unsigned int if you like but there's no need because the functions will always convert the argument to int by definition. So the above fragment needs to be: char *ptr = ...; ... isspace((unsigned char)*ptr) ... This patch changes unsigned int casts to unsigned char casts, and adds unsigned char casts where they are missing.
2023-03-17 19:32:58 +00:00
while (*str2 && isdigit((unsigned char)*str2))
2011-07-26 16:56:59 +00:00
str2++;
isnum = true;
}
else
{
Avoid undefined behaviour with the ctype(3) functions. fix https://github.com/pkgconf/pkgconf/issues/291 As defined in the C standard: In all cases the argument is an int, the value of which shall be representable as an unsigned char or shall equal the value of the macro EOF. If the argument has any other value, the behavior is undefined. This is because they're designed to work with the int values returned by getc or fgetc; they need extra work to handle a char value. If EOF is -1 (as it almost always is), with 8-bit bytes, the allowed inputs to the ctype(3) functions are: {-1, 0, 1, 2, 3, ..., 255}. However, on platforms where char is signed, such as x86 with the usual ABI, code like char *ptr = ...; ... isspace(*ptr) ... may pass in values in the range: {-128, -127, -126, ..., -2, -1, 0, 1, ..., 127}. This has two problems: 1. Inputs in the set {-128, -127, -126, ..., -2} are forbidden. 2. The non-EOF byte 0xff is conflated with the value EOF = -1, so even though the input is not forbidden, it may give the wrong answer. Casting char to unsigned int first before passing the result to ctype(3) doesn't help: inputs like -128 are unchanged by this cast, because (on a two's-complement machine with 32-bit int and unsigned int), converting the signed char with integer value -128 to unsigned int gives integer value 2^32 - 128 = 0xffffff80, which is out of range, and which is converted in int back to -128, which is also out of range. It is necessary to cast char inputs to unsigned char first; you can then cast to unsigned int if you like but there's no need because the functions will always convert the argument to int by definition. So the above fragment needs to be: char *ptr = ...; ... isspace((unsigned char)*ptr) ... This patch changes unsigned int casts to unsigned char casts, and adds unsigned char casts where they are missing.
2023-03-17 19:32:58 +00:00
while (*str1 && isalpha((unsigned char)*str1))
2011-07-26 16:56:59 +00:00
str1++;
Avoid undefined behaviour with the ctype(3) functions. fix https://github.com/pkgconf/pkgconf/issues/291 As defined in the C standard: In all cases the argument is an int, the value of which shall be representable as an unsigned char or shall equal the value of the macro EOF. If the argument has any other value, the behavior is undefined. This is because they're designed to work with the int values returned by getc or fgetc; they need extra work to handle a char value. If EOF is -1 (as it almost always is), with 8-bit bytes, the allowed inputs to the ctype(3) functions are: {-1, 0, 1, 2, 3, ..., 255}. However, on platforms where char is signed, such as x86 with the usual ABI, code like char *ptr = ...; ... isspace(*ptr) ... may pass in values in the range: {-128, -127, -126, ..., -2, -1, 0, 1, ..., 127}. This has two problems: 1. Inputs in the set {-128, -127, -126, ..., -2} are forbidden. 2. The non-EOF byte 0xff is conflated with the value EOF = -1, so even though the input is not forbidden, it may give the wrong answer. Casting char to unsigned int first before passing the result to ctype(3) doesn't help: inputs like -128 are unchanged by this cast, because (on a two's-complement machine with 32-bit int and unsigned int), converting the signed char with integer value -128 to unsigned int gives integer value 2^32 - 128 = 0xffffff80, which is out of range, and which is converted in int back to -128, which is also out of range. It is necessary to cast char inputs to unsigned char first; you can then cast to unsigned int if you like but there's no need because the functions will always convert the argument to int by definition. So the above fragment needs to be: char *ptr = ...; ... isspace((unsigned char)*ptr) ... This patch changes unsigned int casts to unsigned char casts, and adds unsigned char casts where they are missing.
2023-03-17 19:32:58 +00:00
while (*str2 && isalpha((unsigned char)*str2))
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str2++;
isnum = false;
}
oldch1 = *str1;
oldch2 = *str2;
*str1 = '\0';
*str2 = '\0';
if (one == str1)
return -1;
if (two == str2)
return (isnum ? 1 : -1);
if (isnum)
{
int onelen, twolen;
while (*one == '0')
one++;
while (*two == '0')
two++;
onelen = strlen(one);
twolen = strlen(two);
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if (onelen > twolen)
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return 1;
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else if (twolen > onelen)
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return -1;
}
ret = strcmp(one, two);
if (ret != 0)
return ret < 0 ? -1 : 1;
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*str1 = oldch1;
*str2 = oldch2;
one = str1;
two = str2;
}
if ((!*one) && (!*two))
return 0;
if (!*one)
return -1;
return 1;
}
static pkgconf_pkg_t pkg_config_virtual = {
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.id = "pkg-config",
.realname = "pkg-config",
.description = "virtual package defining pkg-config API version supported",
.url = PACKAGE_BUGREPORT,
.version = PACKAGE_VERSION,
.flags = PKGCONF_PKG_PROPF_STATIC,
.vars = {
.head = &(pkgconf_node_t){
.next = &(pkgconf_node_t){
.next = &(pkgconf_node_t){
.data = &(pkgconf_tuple_t){
.key = "pc_system_libdirs",
.value = SYSTEM_LIBDIR,
}
},
.data = &(pkgconf_tuple_t){
.key = "pc_system_includedirs",
.value = SYSTEM_INCLUDEDIR,
}
},
.data = &(pkgconf_tuple_t){
.key = "pc_path",
.value = PKG_DEFAULT_PATH,
},
},
.tail = NULL,
}
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};
static pkgconf_pkg_t pkgconf_virtual = {
.id = "pkgconf",
.realname = "pkgconf",
.description = "virtual package defining pkgconf API version supported",
.url = PACKAGE_BUGREPORT,
.version = PACKAGE_VERSION,
.license = "ISC",
.flags = PKGCONF_PKG_PROPF_STATIC,
.vars = {
.head = &(pkgconf_node_t){
.next = &(pkgconf_node_t){
.next = &(pkgconf_node_t){
.data = &(pkgconf_tuple_t){
.key = "pc_system_libdirs",
.value = SYSTEM_LIBDIR,
}
},
.data = &(pkgconf_tuple_t){
.key = "pc_system_includedirs",
.value = SYSTEM_INCLUDEDIR,
}
},
.data = &(pkgconf_tuple_t){
.key = "pc_path",
.value = PKG_DEFAULT_PATH,
},
},
.tail = NULL,
},
};
typedef struct {
const char *name;
pkgconf_pkg_t *pkg;
} pkgconf_builtin_pkg_pair_t;
/* keep these in alphabetical order */
static const pkgconf_builtin_pkg_pair_t pkgconf_builtin_pkg_pair_set[] = {
{"pkg-config", &pkg_config_virtual},
{"pkgconf", &pkgconf_virtual},
};
static int pkgconf_builtin_pkg_pair_cmp(const void *key, const void *ptr)
{
const pkgconf_builtin_pkg_pair_t *pair = ptr;
return strcasecmp(key, pair->name);
}
/*
* !doc
*
* .. c:function:: pkgconf_pkg_t *pkgconf_builtin_pkg_get(const char *name)
*
* Looks up a built-in package. The package should not be freed or dereferenced.
*
* :param char* name: An atom corresponding to a built-in package to search for.
* :return: the built-in package if present, else ``NULL``.
* :rtype: pkgconf_pkg_t *
*/
pkgconf_pkg_t *
pkgconf_builtin_pkg_get(const char *name)
{
const pkgconf_builtin_pkg_pair_t *pair = bsearch(name, pkgconf_builtin_pkg_pair_set,
PKGCONF_ARRAY_SIZE(pkgconf_builtin_pkg_pair_set), sizeof(pkgconf_builtin_pkg_pair_t),
pkgconf_builtin_pkg_pair_cmp);
return (pair != NULL) ? pair->pkg : NULL;
}
typedef bool (*pkgconf_vercmp_res_func_t)(const char *a, const char *b);
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typedef struct {
const char *name;
pkgconf_pkg_comparator_t compare;
} pkgconf_pkg_comparator_pair_t;
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static const pkgconf_pkg_comparator_pair_t pkgconf_pkg_comparator_names[] = {
{"!=", PKGCONF_CMP_NOT_EQUAL},
{"(any)", PKGCONF_CMP_ANY},
{"<", PKGCONF_CMP_LESS_THAN},
{"<=", PKGCONF_CMP_LESS_THAN_EQUAL},
{"=", PKGCONF_CMP_EQUAL},
{">", PKGCONF_CMP_GREATER_THAN},
{">=", PKGCONF_CMP_GREATER_THAN_EQUAL},
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};
static int pkgconf_pkg_comparator_pair_namecmp(const void *key, const void *ptr)
{
const pkgconf_pkg_comparator_pair_t *pair = ptr;
return strcmp(key, pair->name);
}
static bool pkgconf_pkg_comparator_lt(const char *a, const char *b)
{
return (pkgconf_compare_version(a, b) < 0);
}
static bool pkgconf_pkg_comparator_gt(const char *a, const char *b)
{
return (pkgconf_compare_version(a, b) > 0);
}
static bool pkgconf_pkg_comparator_lte(const char *a, const char *b)
{
return (pkgconf_compare_version(a, b) <= 0);
}
static bool pkgconf_pkg_comparator_gte(const char *a, const char *b)
{
return (pkgconf_compare_version(a, b) >= 0);
}
static bool pkgconf_pkg_comparator_eq(const char *a, const char *b)
{
return (pkgconf_compare_version(a, b) == 0);
}
static bool pkgconf_pkg_comparator_ne(const char *a, const char *b)
{
return (pkgconf_compare_version(a, b) != 0);
}
static bool pkgconf_pkg_comparator_any(const char *a, const char *b)
{
(void) a;
(void) b;
return true;
}
static bool pkgconf_pkg_comparator_none(const char *a, const char *b)
{
(void) a;
(void) b;
return false;
}
static const pkgconf_vercmp_res_func_t pkgconf_pkg_comparator_impls[] = {
[PKGCONF_CMP_ANY] = pkgconf_pkg_comparator_any,
[PKGCONF_CMP_LESS_THAN] = pkgconf_pkg_comparator_lt,
[PKGCONF_CMP_GREATER_THAN] = pkgconf_pkg_comparator_gt,
[PKGCONF_CMP_LESS_THAN_EQUAL] = pkgconf_pkg_comparator_lte,
[PKGCONF_CMP_GREATER_THAN_EQUAL] = pkgconf_pkg_comparator_gte,
[PKGCONF_CMP_EQUAL] = pkgconf_pkg_comparator_eq,
[PKGCONF_CMP_NOT_EQUAL] = pkgconf_pkg_comparator_ne,
};
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/*
* !doc
*
* .. c:function:: const char *pkgconf_pkg_get_comparator(const pkgconf_dependency_t *pkgdep)
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*
* Returns the comparator used in a depgraph dependency node as a string.
*
* :param pkgconf_dependency_t* pkgdep: The depgraph dependency node to return the comparator for.
* :return: A string matching the comparator or ``"???"``.
* :rtype: char *
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*/
const char *
pkgconf_pkg_get_comparator(const pkgconf_dependency_t *pkgdep)
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{
if (pkgdep->compare >= PKGCONF_ARRAY_SIZE(pkgconf_pkg_comparator_names))
return "???";
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return pkgconf_pkg_comparator_names[pkgdep->compare].name;
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}
/*
* !doc
*
* .. c:function:: pkgconf_pkg_comparator_t pkgconf_pkg_comparator_lookup_by_name(const char *name)
*
* Look up the appropriate comparator bytecode in the comparator set (defined
* in ``pkg.c``, see ``pkgconf_pkg_comparator_names`` and ``pkgconf_pkg_comparator_impls``).
*
* :param char* name: The comparator to look up by `name`.
* :return: The comparator bytecode if found, else ``PKGCONF_CMP_ANY``.
* :rtype: pkgconf_pkg_comparator_t
*/
pkgconf_pkg_comparator_t
pkgconf_pkg_comparator_lookup_by_name(const char *name)
{
const pkgconf_pkg_comparator_pair_t *p = bsearch(name, pkgconf_pkg_comparator_names,
PKGCONF_ARRAY_SIZE(pkgconf_pkg_comparator_names), sizeof(pkgconf_pkg_comparator_pair_t),
pkgconf_pkg_comparator_pair_namecmp);
return (p != NULL) ? p->compare : PKGCONF_CMP_ANY;
}
typedef struct {
pkgconf_dependency_t *pkgdep;
} pkgconf_pkg_scan_providers_ctx_t;
typedef struct {
const pkgconf_vercmp_res_func_t rulecmp[PKGCONF_CMP_COUNT];
const pkgconf_vercmp_res_func_t depcmp[PKGCONF_CMP_COUNT];
} pkgconf_pkg_provides_vermatch_rule_t;
static const pkgconf_pkg_provides_vermatch_rule_t pkgconf_pkg_provides_vermatch_rules[] = {
[PKGCONF_CMP_ANY] = {
.rulecmp = {
[PKGCONF_CMP_ANY] = pkgconf_pkg_comparator_none,
},
.depcmp = {
[PKGCONF_CMP_ANY] = pkgconf_pkg_comparator_none,
},
},
[PKGCONF_CMP_LESS_THAN] = {
.rulecmp = {
[PKGCONF_CMP_ANY] = pkgconf_pkg_comparator_none,
[PKGCONF_CMP_LESS_THAN] = pkgconf_pkg_comparator_lt,
[PKGCONF_CMP_GREATER_THAN] = pkgconf_pkg_comparator_gt,
[PKGCONF_CMP_LESS_THAN_EQUAL] = pkgconf_pkg_comparator_lte,
[PKGCONF_CMP_GREATER_THAN_EQUAL] = pkgconf_pkg_comparator_gte,
},
.depcmp = {
[PKGCONF_CMP_GREATER_THAN] = pkgconf_pkg_comparator_lt,
[PKGCONF_CMP_GREATER_THAN_EQUAL] = pkgconf_pkg_comparator_lt,
[PKGCONF_CMP_EQUAL] = pkgconf_pkg_comparator_lt,
[PKGCONF_CMP_NOT_EQUAL] = pkgconf_pkg_comparator_gte,
},
},
[PKGCONF_CMP_GREATER_THAN] = {
.rulecmp = {
[PKGCONF_CMP_ANY] = pkgconf_pkg_comparator_none,
[PKGCONF_CMP_LESS_THAN] = pkgconf_pkg_comparator_lt,
[PKGCONF_CMP_GREATER_THAN] = pkgconf_pkg_comparator_gt,
[PKGCONF_CMP_LESS_THAN_EQUAL] = pkgconf_pkg_comparator_lte,
[PKGCONF_CMP_GREATER_THAN_EQUAL] = pkgconf_pkg_comparator_gte,
},
.depcmp = {
[PKGCONF_CMP_LESS_THAN] = pkgconf_pkg_comparator_gt,
[PKGCONF_CMP_LESS_THAN_EQUAL] = pkgconf_pkg_comparator_gt,
[PKGCONF_CMP_EQUAL] = pkgconf_pkg_comparator_gt,
[PKGCONF_CMP_NOT_EQUAL] = pkgconf_pkg_comparator_lte,
},
},
[PKGCONF_CMP_LESS_THAN_EQUAL] = {
.rulecmp = {
[PKGCONF_CMP_ANY] = pkgconf_pkg_comparator_none,
[PKGCONF_CMP_LESS_THAN] = pkgconf_pkg_comparator_lt,
[PKGCONF_CMP_GREATER_THAN] = pkgconf_pkg_comparator_gt,
[PKGCONF_CMP_LESS_THAN_EQUAL] = pkgconf_pkg_comparator_lte,
[PKGCONF_CMP_GREATER_THAN_EQUAL] = pkgconf_pkg_comparator_gte,
},
.depcmp = {
[PKGCONF_CMP_GREATER_THAN] = pkgconf_pkg_comparator_lte,
[PKGCONF_CMP_GREATER_THAN_EQUAL] = pkgconf_pkg_comparator_lte,
[PKGCONF_CMP_EQUAL] = pkgconf_pkg_comparator_lte,
[PKGCONF_CMP_NOT_EQUAL] = pkgconf_pkg_comparator_gt,
},
},
[PKGCONF_CMP_GREATER_THAN_EQUAL] = {
.rulecmp = {
[PKGCONF_CMP_ANY] = pkgconf_pkg_comparator_none,
[PKGCONF_CMP_LESS_THAN] = pkgconf_pkg_comparator_lt,
[PKGCONF_CMP_GREATER_THAN] = pkgconf_pkg_comparator_gt,
[PKGCONF_CMP_LESS_THAN_EQUAL] = pkgconf_pkg_comparator_lte,
[PKGCONF_CMP_GREATER_THAN_EQUAL] = pkgconf_pkg_comparator_gte,
},
.depcmp = {
[PKGCONF_CMP_LESS_THAN] = pkgconf_pkg_comparator_gte,
[PKGCONF_CMP_LESS_THAN_EQUAL] = pkgconf_pkg_comparator_gte,
[PKGCONF_CMP_EQUAL] = pkgconf_pkg_comparator_gte,
[PKGCONF_CMP_NOT_EQUAL] = pkgconf_pkg_comparator_lt,
},
},
[PKGCONF_CMP_EQUAL] = {
.rulecmp = {
[PKGCONF_CMP_ANY] = pkgconf_pkg_comparator_none,
[PKGCONF_CMP_LESS_THAN] = pkgconf_pkg_comparator_lt,
[PKGCONF_CMP_GREATER_THAN] = pkgconf_pkg_comparator_gt,
[PKGCONF_CMP_LESS_THAN_EQUAL] = pkgconf_pkg_comparator_lte,
[PKGCONF_CMP_GREATER_THAN_EQUAL] = pkgconf_pkg_comparator_gte,
[PKGCONF_CMP_EQUAL] = pkgconf_pkg_comparator_eq,
[PKGCONF_CMP_NOT_EQUAL] = pkgconf_pkg_comparator_ne
},
.depcmp = {
[PKGCONF_CMP_ANY] = pkgconf_pkg_comparator_none,
},
},
[PKGCONF_CMP_NOT_EQUAL] = {
.rulecmp = {
[PKGCONF_CMP_ANY] = pkgconf_pkg_comparator_none,
[PKGCONF_CMP_LESS_THAN] = pkgconf_pkg_comparator_gte,
[PKGCONF_CMP_GREATER_THAN] = pkgconf_pkg_comparator_lte,
[PKGCONF_CMP_LESS_THAN_EQUAL] = pkgconf_pkg_comparator_gt,
[PKGCONF_CMP_GREATER_THAN_EQUAL] = pkgconf_pkg_comparator_lt,
[PKGCONF_CMP_EQUAL] = pkgconf_pkg_comparator_ne,
[PKGCONF_CMP_NOT_EQUAL] = pkgconf_pkg_comparator_eq
},
.depcmp = {
[PKGCONF_CMP_ANY] = pkgconf_pkg_comparator_none,
},
},
};
/*
* pkgconf_pkg_scan_provides_vercmp(pkgdep, provider)
*
* compare a provides node against the requested dependency node.
*
* XXX: maybe handle PKGCONF_CMP_ANY in a versioned comparison
*/
static bool
pkgconf_pkg_scan_provides_vercmp(const pkgconf_dependency_t *pkgdep, const pkgconf_dependency_t *provider)
{
const pkgconf_pkg_provides_vermatch_rule_t *rule = &pkgconf_pkg_provides_vermatch_rules[pkgdep->compare];
if (rule->depcmp[provider->compare] != NULL &&
!rule->depcmp[provider->compare](provider->version, pkgdep->version))
return false;
if (rule->rulecmp[provider->compare] != NULL &&
!rule->rulecmp[provider->compare](pkgdep->version, provider->version))
return false;
return true;
}
/*
* pkgconf_pkg_scan_provides_entry(pkg, ctx)
*
* attempt to match a single package's Provides rules against the requested dependency node.
*/
static bool
pkgconf_pkg_scan_provides_entry(const pkgconf_pkg_t *pkg, const pkgconf_pkg_scan_providers_ctx_t *ctx)
{
const pkgconf_dependency_t *pkgdep = ctx->pkgdep;
pkgconf_node_t *node;
PKGCONF_FOREACH_LIST_ENTRY(pkg->provides.head, node)
{
const pkgconf_dependency_t *provider = node->data;
if (!strcmp(provider->package, pkgdep->package))
return pkgconf_pkg_scan_provides_vercmp(pkgdep, provider);
}
return false;
}
/*
* pkgconf_pkg_scan_providers(client, pkgdep, eflags)
*
* scan all available packages to see if a Provides rule matches the pkgdep.
*/
static pkgconf_pkg_t *
pkgconf_pkg_scan_providers(pkgconf_client_t *client, pkgconf_dependency_t *pkgdep, unsigned int *eflags)
{
pkgconf_pkg_t *pkg;
pkgconf_pkg_scan_providers_ctx_t ctx = {
.pkgdep = pkgdep,
};
pkg = pkgconf_scan_all(client, &ctx, (pkgconf_pkg_iteration_func_t) pkgconf_pkg_scan_provides_entry);
if (pkg != NULL)
{
pkgdep->match = pkgconf_pkg_ref(client, pkg);
return pkg;
}
if (eflags != NULL)
*eflags |= PKGCONF_PKG_ERRF_PACKAGE_NOT_FOUND;
return NULL;
}
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/*
* !doc
*
* .. c:function:: pkgconf_pkg_t *pkgconf_pkg_verify_dependency(pkgconf_client_t *client, pkgconf_dependency_t *pkgdep, unsigned int *eflags)
*
* Verify a pkgconf_dependency_t node in the depgraph. If the dependency is solvable,
* return the appropriate ``pkgconf_pkg_t`` object, else ``NULL``.
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*
* :param pkgconf_client_t* client: The pkgconf client object to use for dependency resolution.
* :param pkgconf_dependency_t* pkgdep: The dependency graph node to solve.
* :param uint* eflags: An optional pointer that, if set, will be populated with an error code from the resolver.
* :return: On success, the appropriate ``pkgconf_pkg_t`` object to solve the dependency, else ``NULL``.
* :rtype: pkgconf_pkg_t *
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*/
pkgconf_pkg_t *
pkgconf_pkg_verify_dependency(pkgconf_client_t *client, pkgconf_dependency_t *pkgdep, unsigned int *eflags)
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{
pkgconf_pkg_t *pkg = NULL;
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if (eflags != NULL)
*eflags = PKGCONF_PKG_ERRF_OK;
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PKGCONF_TRACE(client, "trying to verify dependency: %s", pkgdep->package);
if (pkgdep->match != NULL)
{
PKGCONF_TRACE(client, "cached dependency: %s -> %s@%p", pkgdep->package, pkgdep->match->id, pkgdep->match);
return pkgconf_pkg_ref(client, pkgdep->match);
}
pkg = pkgconf_pkg_find(client, pkgdep->package);
if (pkg == NULL)
{
if (client->flags & PKGCONF_PKG_PKGF_SKIP_PROVIDES)
{
if (eflags != NULL)
*eflags |= PKGCONF_PKG_ERRF_PACKAGE_NOT_FOUND;
return NULL;
}
pkg = pkgconf_pkg_scan_providers(client, pkgdep, eflags);
}
else
{
if (pkg->id == NULL)
pkg->id = strdup(pkgdep->package);
if (pkgconf_pkg_comparator_impls[pkgdep->compare](pkg->version, pkgdep->version) != true)
{
if (eflags != NULL)
*eflags |= PKGCONF_PKG_ERRF_PACKAGE_VER_MISMATCH;
}
else
pkgdep->match = pkgconf_pkg_ref(client, pkg);
}
if (pkg != NULL && pkg->why == NULL)
pkg->why = strdup(pkgdep->package);
return pkg;
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}
/*
* !doc
*
* .. c:function:: unsigned int pkgconf_pkg_verify_graph(pkgconf_client_t *client, pkgconf_pkg_t *root, int depth)
*
* Verify the graph dependency nodes are satisfiable by walking the tree using
* ``pkgconf_pkg_traverse()``.
*
* :param pkgconf_client_t* client: The pkgconf client object to use for dependency resolution.
* :param pkgconf_pkg_t* root: The root entry in the package dependency graph which should contain the top-level dependencies to resolve.
* :param int depth: The maximum allowed depth for dependency resolution.
* :return: On success, ``PKGCONF_PKG_ERRF_OK`` (0), else an error code.
* :rtype: unsigned int
*/
unsigned int
pkgconf_pkg_verify_graph(pkgconf_client_t *client, pkgconf_pkg_t *root, int depth)
{
return pkgconf_pkg_traverse(client, root, NULL, NULL, depth, 0);
}
static unsigned int
pkgconf_pkg_report_graph_error(pkgconf_client_t *client, pkgconf_pkg_t *parent, pkgconf_pkg_t *pkg, pkgconf_dependency_t *node, unsigned int eflags)
{
if (eflags & PKGCONF_PKG_ERRF_PACKAGE_NOT_FOUND)
{
if (!(client->flags & PKGCONF_PKG_PKGF_SIMPLIFY_ERRORS) & !client->already_sent_notice)
{
pkgconf_error(client, "Package %s was not found in the pkg-config search path.\n", node->package);
pkgconf_error(client, "Perhaps you should add the directory containing `%s.pc'\n", node->package);
pkgconf_error(client, "to the PKG_CONFIG_PATH environment variable\n");
client->already_sent_notice = true;
}
if (parent->flags & PKGCONF_PKG_PROPF_VIRTUAL)
pkgconf_error(client, "Package '%s' not found\n", node->package);
else
pkgconf_error(client, "Package '%s', required by '%s', not found\n", node->package, parent->id);
pkgconf_audit_log(client, "%s NOT-FOUND\n", node->package);
}
else if (eflags & PKGCONF_PKG_ERRF_PACKAGE_VER_MISMATCH)
{
pkgconf_error(client, "Package dependency requirement '%s %s %s' could not be satisfied.\n",
node->package, pkgconf_pkg_get_comparator(node), node->version);
if (pkg != NULL)
pkgconf_error(client, "Package '%s' has version '%s', required version is '%s %s'\n",
node->package, pkg->version, pkgconf_pkg_get_comparator(node), node->version);
}
if (pkg != NULL)
pkgconf_pkg_unref(client, pkg);
return eflags;
}
static inline unsigned int
pkgconf_pkg_walk_list(pkgconf_client_t *client,
pkgconf_pkg_t *parent,
pkgconf_list_t *deplist,
pkgconf_pkg_traverse_func_t func,
void *data,
int depth,
unsigned int skip_flags)
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{
unsigned int eflags = PKGCONF_PKG_ERRF_OK;
pkgconf_node_t *node, *next;
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parent->flags |= PKGCONF_PKG_PROPF_ANCESTOR;
PKGCONF_FOREACH_LIST_ENTRY_SAFE(deplist->head, next, node)
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{
unsigned int eflags_local = PKGCONF_PKG_ERRF_OK;
pkgconf_dependency_t *depnode = node->data;
pkgconf_pkg_t *pkgdep;
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if (*depnode->package == '\0')
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continue;
pkgdep = pkgconf_pkg_verify_dependency(client, depnode, &eflags_local);
eflags |= eflags_local;
if (eflags_local != PKGCONF_PKG_ERRF_OK && !(client->flags & PKGCONF_PKG_PKGF_SKIP_ERRORS))
{
pkgconf_pkg_report_graph_error(client, parent, pkgdep, depnode, eflags_local);
continue;
}
if (pkgdep == NULL)
continue;
if((pkgdep->flags & PKGCONF_PKG_PROPF_ANCESTOR) != 0)
{
/* In this case we have a circular reference.
* We break that by deleteing the circular node from the
* the list, so that we dont create a situation where
* memory is leaked due to circular ownership.
* i.e: A owns B owns A
*
* TODO(ariadne): Breaking circular references between Requires and Requires.private
* lists causes problems. Find a way to refactor the Requires.private list out.
*/
if (!(depnode->flags & PKGCONF_PKG_DEPF_PRIVATE) &&
!(parent->flags & PKGCONF_PKG_PROPF_VIRTUAL))
{
pkgconf_warn(client, "%s: breaking circular reference (%s -> %s -> %s)\n",
parent->id, parent->id, pkgdep->id, parent->id);
pkgconf_node_delete(node, deplist);
pkgconf_dependency_unref(client, depnode);
}
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goto next;
}
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if (skip_flags && (depnode->flags & skip_flags) == skip_flags)
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goto next;
pkgconf_audit_log_dependency(client, pkgdep, depnode);
eflags |= pkgconf_pkg_traverse_main(client, pkgdep, func, data, depth - 1, skip_flags);
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next:
pkgconf_pkg_unref(client, pkgdep);
}
parent->flags &= ~PKGCONF_PKG_PROPF_ANCESTOR;
return eflags;
}
static inline unsigned int
pkgconf_pkg_walk_conflicts_list(pkgconf_client_t *client,
pkgconf_pkg_t *root, pkgconf_list_t *deplist)
{
unsigned int eflags;
pkgconf_node_t *node, *childnode;
PKGCONF_FOREACH_LIST_ENTRY(deplist->head, node)
{
pkgconf_dependency_t *parentnode = node->data;
if (*parentnode->package == '\0')
continue;
PKGCONF_FOREACH_LIST_ENTRY(root->required.head, childnode)
{
pkgconf_pkg_t *pkgdep;
pkgconf_dependency_t *depnode = childnode->data;
if (*depnode->package == '\0' || strcmp(depnode->package, parentnode->package))
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continue;
pkgdep = pkgconf_pkg_verify_dependency(client, parentnode, &eflags);
if (eflags == PKGCONF_PKG_ERRF_OK)
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{
pkgconf_error(client, "Version '%s' of '%s' conflicts with '%s' due to satisfying conflict rule '%s %s%s%s'.\n",
pkgdep->version, pkgdep->realname, root->realname, parentnode->package, pkgconf_pkg_get_comparator(parentnode),
parentnode->version != NULL ? " " : "", parentnode->version != NULL ? parentnode->version : "");
if (!(client->flags & PKGCONF_PKG_PKGF_SIMPLIFY_ERRORS))
{
pkgconf_error(client, "It may be possible to ignore this conflict and continue, try the\n");
pkgconf_error(client, "PKG_CONFIG_IGNORE_CONFLICTS environment variable.\n");
}
pkgconf_pkg_unref(client, pkgdep);
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return PKGCONF_PKG_ERRF_PACKAGE_CONFLICT;
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}
pkgconf_pkg_unref(client, pkgdep);
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}
}
return PKGCONF_PKG_ERRF_OK;
}
/*
* !doc
*
* .. c:function:: unsigned int pkgconf_pkg_traverse(pkgconf_client_t *client, pkgconf_pkg_t *root, pkgconf_pkg_traverse_func_t func, void *data, int maxdepth, unsigned int skip_flags)
*
* Walk and resolve the dependency graph up to `maxdepth` levels.
*
* :param pkgconf_client_t* client: The pkgconf client object to use for dependency resolution.
* :param pkgconf_pkg_t* root: The root of the dependency graph.
* :param pkgconf_pkg_traverse_func_t func: A traversal function to call for each resolved node in the dependency graph.
* :param void* data: An opaque pointer to data to be passed to the traversal function.
* :param int maxdepth: The maximum depth to walk the dependency graph for. -1 means infinite recursion.
* :param uint skip_flags: Skip over dependency nodes containing the specified flags. A setting of 0 skips no dependency nodes.
* :return: ``PKGCONF_PKG_ERRF_OK`` on success, else an error code.
* :rtype: unsigned int
*/
static unsigned int
pkgconf_pkg_traverse_main(pkgconf_client_t *client,
pkgconf_pkg_t *root,
pkgconf_pkg_traverse_func_t func,
void *data,
int maxdepth,
unsigned int skip_flags)
{
unsigned int eflags = PKGCONF_PKG_ERRF_OK;
if (maxdepth == 0)
return eflags;
/* Short-circuit if we have already visited this node.
*/
if (root->serial == client->serial)
return eflags;
root->serial = client->serial;
if (root->identifier == 0)
root->identifier = ++client->identifier;
PKGCONF_TRACE(client, "%s: level %d, serial %"PRIu64, root->id, maxdepth, client->serial);
if ((root->flags & PKGCONF_PKG_PROPF_VIRTUAL) != PKGCONF_PKG_PROPF_VIRTUAL || (client->flags & PKGCONF_PKG_PKGF_SKIP_ROOT_VIRTUAL) != PKGCONF_PKG_PKGF_SKIP_ROOT_VIRTUAL)
{
if (func != NULL)
func(client, root, data);
}
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if (!(client->flags & PKGCONF_PKG_PKGF_SKIP_CONFLICTS) && root->conflicts.head != NULL)
{
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PKGCONF_TRACE(client, "%s: walking 'Conflicts' list", root->id);
eflags = pkgconf_pkg_walk_conflicts_list(client, root, &root->conflicts);
if (eflags != PKGCONF_PKG_ERRF_OK)
return eflags;
}
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PKGCONF_TRACE(client, "%s: walking 'Requires' list", root->id);
eflags = pkgconf_pkg_walk_list(client, root, &root->required, func, data, maxdepth, skip_flags);
if (eflags != PKGCONF_PKG_ERRF_OK)
return eflags;
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if (client->flags & PKGCONF_PKG_PKGF_SEARCH_PRIVATE)
{
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PKGCONF_TRACE(client, "%s: walking 'Requires.private' list", root->id);
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/* XXX: ugly */
client->flags |= PKGCONF_PKG_PKGF_ITER_PKG_IS_PRIVATE;
eflags = pkgconf_pkg_walk_list(client, root, &root->requires_private, func, data, maxdepth, skip_flags);
client->flags &= ~PKGCONF_PKG_PKGF_ITER_PKG_IS_PRIVATE;
if (eflags != PKGCONF_PKG_ERRF_OK)
return eflags;
}
return eflags;
}
unsigned int
pkgconf_pkg_traverse(pkgconf_client_t *client,
pkgconf_pkg_t *root,
pkgconf_pkg_traverse_func_t func,
void *data,
int maxdepth,
unsigned int skip_flags)
{
if (root->flags & PKGCONF_PKG_PROPF_VIRTUAL)
client->serial++;
if ((client->flags & PKGCONF_PKG_PKGF_SEARCH_PRIVATE) == 0)
skip_flags |= PKGCONF_PKG_DEPF_PRIVATE;
return pkgconf_pkg_traverse_main(client, root, func, data, maxdepth, skip_flags);
}
static void
pkgconf_pkg_cflags_collect(pkgconf_client_t *client, pkgconf_pkg_t *pkg, void *data)
{
pkgconf_list_t *list = data;
pkgconf_node_t *node;
PKGCONF_FOREACH_LIST_ENTRY(pkg->cflags.head, node)
{
pkgconf_fragment_t *frag = node->data;
pkgconf_fragment_copy(client, list, frag, false);
}
}
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static void
pkgconf_pkg_cflags_private_collect(pkgconf_client_t *client, pkgconf_pkg_t *pkg, void *data)
2013-08-14 05:36:43 +00:00
{
pkgconf_list_t *list = data;
pkgconf_node_t *node;
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PKGCONF_FOREACH_LIST_ENTRY(pkg->cflags_private.head, node)
2013-08-14 05:36:43 +00:00
{
pkgconf_fragment_t *frag = node->data;
pkgconf_fragment_copy(client, list, frag, true);
2013-08-14 05:36:43 +00:00
}
}
/*
* !doc
*
* .. c:function:: int pkgconf_pkg_cflags(pkgconf_client_t *client, pkgconf_pkg_t *root, pkgconf_list_t *list, int maxdepth)
*
* Walks a dependency graph and extracts relevant ``CFLAGS`` fragments.
*
* :param pkgconf_client_t* client: The pkgconf client object to use for dependency resolution.
* :param pkgconf_pkg_t* root: The root of the dependency graph.
* :param pkgconf_list_t* list: The fragment list to add the extracted ``CFLAGS`` fragments to.
* :param int maxdepth: The maximum allowed depth for dependency resolution. -1 means infinite recursion.
* :return: ``PKGCONF_PKG_ERRF_OK`` if successful, otherwise an error code.
* :rtype: unsigned int
*/
unsigned int
pkgconf_pkg_cflags(pkgconf_client_t *client, pkgconf_pkg_t *root, pkgconf_list_t *list, int maxdepth)
{
unsigned int eflag;
unsigned int skip_flags = (client->flags & PKGCONF_PKG_PKGF_DONT_FILTER_INTERNAL_CFLAGS) == 0 ? PKGCONF_PKG_DEPF_INTERNAL : 0;
pkgconf_list_t frags = PKGCONF_LIST_INITIALIZER;
eflag = pkgconf_pkg_traverse(client, root, pkgconf_pkg_cflags_collect, &frags, maxdepth, skip_flags);
if (eflag == PKGCONF_PKG_ERRF_OK && client->flags & PKGCONF_PKG_PKGF_MERGE_PRIVATE_FRAGMENTS)
eflag = pkgconf_pkg_traverse(client, root, pkgconf_pkg_cflags_private_collect, &frags, maxdepth, skip_flags);
if (eflag != PKGCONF_PKG_ERRF_OK)
2013-08-14 05:36:43 +00:00
{
pkgconf_fragment_free(&frags);
return eflag;
2013-08-14 05:36:43 +00:00
}
pkgconf_fragment_copy_list(client, list, &frags);
pkgconf_fragment_free(&frags);
return eflag;
}
static void
pkgconf_pkg_libs_collect(pkgconf_client_t *client, pkgconf_pkg_t *pkg, void *data)
{
pkgconf_list_t *list = data;
pkgconf_node_t *node;
PKGCONF_FOREACH_LIST_ENTRY(pkg->libs.head, node)
{
pkgconf_fragment_t *frag = node->data;
pkgconf_fragment_copy(client, list, frag, (client->flags & PKGCONF_PKG_PKGF_ITER_PKG_IS_PRIVATE) != 0);
}
if (client->flags & PKGCONF_PKG_PKGF_MERGE_PRIVATE_FRAGMENTS)
{
PKGCONF_FOREACH_LIST_ENTRY(pkg->libs_private.head, node)
{
pkgconf_fragment_t *frag = node->data;
pkgconf_fragment_copy(client, list, frag, true);
}
}
}
/*
* !doc
*
* .. c:function:: int pkgconf_pkg_libs(pkgconf_client_t *client, pkgconf_pkg_t *root, pkgconf_list_t *list, int maxdepth)
*
* Walks a dependency graph and extracts relevant ``LIBS`` fragments.
*
* :param pkgconf_client_t* client: The pkgconf client object to use for dependency resolution.
* :param pkgconf_pkg_t* root: The root of the dependency graph.
* :param pkgconf_list_t* list: The fragment list to add the extracted ``LIBS`` fragments to.
* :param int maxdepth: The maximum allowed depth for dependency resolution. -1 means infinite recursion.
* :return: ``PKGCONF_PKG_ERRF_OK`` if successful, otherwise an error code.
* :rtype: unsigned int
*/
unsigned int
pkgconf_pkg_libs(pkgconf_client_t *client, pkgconf_pkg_t *root, pkgconf_list_t *list, int maxdepth)
{
unsigned int eflag;
eflag = pkgconf_pkg_traverse(client, root, pkgconf_pkg_libs_collect, list, maxdepth, 0);
if (eflag != PKGCONF_PKG_ERRF_OK)
{
pkgconf_fragment_free(list);
return eflag;
}
return eflag;
}