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pkgconf/libpkgconf/pkg.c

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/*
* pkg.c
* higher-level dependency graph compilation, management and manipulation
*
* Copyright (c) 2011, 2012, 2013 pkgconf authors (see AUTHORS).
*
* 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.
*/
#include <libpkgconf/stdinc.h>
#include <libpkgconf/config.h>
#include <libpkgconf/libpkgconf.h>
/*
* !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"
# define strncasecmp _strnicmp
# define strcasecmp _stricmp
#endif
#define PKG_CONFIG_EXT ".pc"
#define PKG_CONFIG_PATH_SZ (65535)
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 inline const char *
get_default_pkgconfig_path(char *outbuf, size_t outlen)
{
#ifdef _WIN32
char namebuf[MAX_PATH];
char *p;
int sizepath = GetModuleFileName(NULL, namebuf, sizeof namebuf);
char * winslash;
namebuf[sizepath] = '\0';
while ((winslash = strchr (namebuf, '\\')) != NULL)
{
*winslash = '/';
}
p = strrchr(namebuf, '/');
if (p == NULL)
return PKG_DEFAULT_PATH;
*p = '\0';
pkgconf_strlcpy(outbuf, namebuf, outlen);
pkgconf_strlcat(outbuf, "/", outlen);
pkgconf_strlcat(outbuf, "../lib/pkgconfig", outlen);
pkgconf_strlcat(outbuf, ";", outlen);
pkgconf_strlcat(outbuf, namebuf, outlen);
pkgconf_strlcat(outbuf, "/", outlen);
pkgconf_strlcat(outbuf, "../share/pkgconfig", outlen);
return outbuf;
#else
(void) outbuf;
(void) outlen;
#endif
return PKG_DEFAULT_PATH;
}
static const char *
pkg_get_parent_dir(pkgconf_pkg_t *pkg, char *buf, size_t buflen)
{
char *pathbuf;
pkgconf_strlcpy(buf, pkg->filename, buflen);
pathbuf = strrchr(buf, PKG_DIR_SEP_S);
if (pathbuf == NULL)
pathbuf = strrchr(buf, '/');
if (pathbuf != NULL)
pathbuf[0] = '\0';
return buf;
}
/*
* !doc
*
* .. c:function:: void pkgconf_pkg_dir_list_build(pkgconf_client_t *client)
*
* Bootstraps the package search paths. If the ``PKGCONF_PKG_PKGF_ENV_ONLY`` `flag` is set on the client,
* then only the ``PKG_CONFIG_PATH`` environment variable will be used, otherwise both the
* ``PKG_CONFIG_PATH`` and ``PKG_CONFIG_LIBDIR`` environment variables will be used.
*
* :param pkgconf_client_t* client: The pkgconf client object to bootstrap.
* :return: nothing
*/
void
pkgconf_pkg_dir_list_build(pkgconf_client_t *client)
{
pkgconf_path_build_from_environ("PKG_CONFIG_PATH", NULL, &client->dir_list, true);
if (!(client->flags & PKGCONF_PKG_PKGF_ENV_ONLY))
{
char pathbuf[PKGCONF_BUFSIZE];
pkgconf_path_build_from_environ("PKG_CONFIG_LIBDIR", get_default_pkgconfig_path(pathbuf, sizeof pathbuf), &client->dir_list, true);
}
}
typedef void (*pkgconf_pkg_parser_keyword_func_t)(const pkgconf_client_t *client, pkgconf_pkg_t *pkg, const ptrdiff_t offset, 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(const pkgconf_client_t *client, pkgconf_pkg_t *pkg, const ptrdiff_t offset, char *value)
{
char **dest = (char **)((char *) pkg + offset);
*dest = pkgconf_tuple_parse(client, &pkg->vars, value);
}
static void
pkgconf_pkg_parser_fragment_func(const pkgconf_client_t *client, pkgconf_pkg_t *pkg, const ptrdiff_t offset, char *value)
{
pkgconf_list_t *dest = (pkgconf_list_t *)((char *) pkg + offset);
pkgconf_fragment_parse(client, dest, &pkg->vars, value);
}
static void
pkgconf_pkg_parser_dependency_func(const pkgconf_client_t *client, pkgconf_pkg_t *pkg, const ptrdiff_t offset, char *value)
{
pkgconf_list_t *dest = (pkgconf_list_t *)((char *) pkg + offset);
pkgconf_dependency_parse(client, pkg, dest, value);
}
/* 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)},
{"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)},
{"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, requires)},
{"Requires.private", pkgconf_pkg_parser_dependency_func, offsetof(pkgconf_pkg_t, requires_private)},
{"Version", pkgconf_pkg_parser_tuple_func, offsetof(pkgconf_pkg_t, version)},
};
static bool
pkgconf_pkg_parser_keyword_set(const pkgconf_client_t *client, pkgconf_pkg_t *pkg, const char *keyword, char *value)
{
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 false;
pair->func(client, pkg, pair->offset, value);
return true;
}
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;
}
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 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)
*
* 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.
* :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)
{
pkgconf_pkg_t *pkg;
char readbuf[PKGCONF_BUFSIZE];
char pathbuf[PKGCONF_BUFSIZE];
char prefixbuf[PKGCONF_BUFSIZE];
char *idptr;
size_t lineno = 0;
pkg = calloc(sizeof(pkgconf_pkg_t), 1);
pkg->filename = strdup(filename);
pkgconf_tuple_add(client, &pkg->vars, "pcfiledir", pkg_get_parent_dir(pkg, pathbuf, sizeof pathbuf), true);
/* make module id */
if ((idptr = strrchr(pkg->filename, PKG_DIR_SEP_S)) != NULL)
idptr++;
#ifdef _WIN32
else if ((idptr = strrchr(pkg->filename, '/')) != NULL)
idptr++;
#endif
else
idptr = pkg->filename;
pkg->id = strdup(idptr);
idptr = strrchr(pkg->id, '.');
if (idptr)
*idptr = '\0';
while (pkgconf_fgetline(readbuf, PKGCONF_BUFSIZE, f) != NULL)
{
char op, *p, *key, *value;
bool warned_key_whitespace = false, warned_value_whitespace = false;
lineno++;
PKGCONF_TRACE(client, "%s:" SIZE_FMT_SPECIFIER " > [%s]", filename, lineno, readbuf);
p = readbuf;
while (*p && (isalpha((unsigned int)*p) || isdigit((unsigned int)*p) || *p == '_' || *p == '.'))
p++;
key = readbuf;
if (!isalpha((unsigned int)*key) && !isdigit((unsigned int)*p))
continue;
while (*p && isspace((unsigned int)*p))
{
if (!warned_key_whitespace)
{
pkgconf_warn(client, "%s:" SIZE_FMT_SPECIFIER ": warning: whitespace encountered while parsing key section\n",
pkg->filename, lineno);
warned_key_whitespace = true;
}
/* set to null to avoid trailing spaces in key */
*p = '\0';
p++;
}
op = *p;
*p = '\0';
p++;
while (*p && isspace((unsigned int)*p))
p++;
value = p;
p = value + (strlen(value) - 1);
while (*p && isspace((unsigned int) *p) && p > value)
{
if (!warned_value_whitespace && op == '=')
{
pkgconf_warn(client, "%s:" SIZE_FMT_SPECIFIER ": warning: trailing whitespace encountered while parsing value section\n",
pkg->filename, lineno);
warned_value_whitespace = true;
}
*p = '\0';
p--;
}
switch (op)
{
case ':':
pkgconf_pkg_parser_keyword_set(client, pkg, key, value);
break;
case '=':
if (strcmp(key, client->prefix_varname) || !(client->flags & PKGCONF_PKG_PKGF_REDEFINE_PREFIX))
pkgconf_tuple_add(client, &pkg->vars, key, value, true);
else
{
const char *relvalue = determine_prefix(pkg, prefixbuf, sizeof prefixbuf);
if (relvalue != NULL)
{
pkgconf_tuple_add(client, &pkg->vars, "orig_prefix", value, true);
pkgconf_tuple_add(client, &pkg->vars, key, relvalue, false);
}
else
pkgconf_tuple_add(client, &pkg->vars, key, value, true);
}
break;
default:
break;
}
}
fclose(f);
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_add(client, &pkg->provides, pkg->id, pkg->version, PKGCONF_CMP_EQUAL);
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
*/
void
pkgconf_pkg_free(pkgconf_client_t *client, pkgconf_pkg_t *pkg)
{
if (pkg == NULL)
return;
if (pkg->flags & PKGCONF_PKG_PROPF_STATIC && !(pkg->flags & PKGCONF_PKG_PROPF_VIRTUAL))
return;
pkgconf_cache_remove(client, pkg);
pkgconf_dependency_free(&pkg->requires);
pkgconf_dependency_free(&pkg->requires_private);
pkgconf_dependency_free(&pkg->conflicts);
pkgconf_dependency_free(&pkg->provides);
pkgconf_fragment_free(&pkg->cflags);
pkgconf_fragment_free(&pkg->cflags_private);
pkgconf_fragment_free(&pkg->libs);
pkgconf_fragment_free(&pkg->libs_private);
pkgconf_tuple_free(&pkg->vars);
if (pkg->flags & PKGCONF_PKG_PROPF_VIRTUAL)
return;
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);
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(const pkgconf_client_t *client, pkgconf_pkg_t *pkg)
{
(void) client;
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)
{
pkg->refcount--;
if (pkg->refcount <= 0)
pkgconf_pkg_free(client, 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[PKG_CONFIG_PATH_SZ];
char uninst_locbuf[PKG_CONFIG_PATH_SZ];
PKGCONF_TRACE(client, "trying path: %s for %s", path, name);
snprintf(locbuf, sizeof locbuf, "%s/%s" PKG_CONFIG_EXT, path, name);
snprintf(uninst_locbuf, sizeof uninst_locbuf, "%s/%s-uninstalled" PKG_CONFIG_EXT, path, name);
if (!(client->flags & PKGCONF_PKG_PKGF_NO_UNINSTALLED) && (f = fopen(uninst_locbuf, "r")) != NULL)
{
PKGCONF_TRACE(client, "found (uninstalled): %s", uninst_locbuf);
pkg = pkgconf_pkg_new_from_file(client, uninst_locbuf, f);
pkg->flags |= PKGCONF_PKG_PROPF_UNINSTALLED;
}
else if ((f = fopen(locbuf, "r")) != NULL)
{
PKGCONF_TRACE(client, "found: %s", locbuf);
pkg = pkgconf_pkg_new_from_file(client, locbuf, f);
}
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;
PKGCONF_TRACE(client, "scanning dir [%s]", path);
for (dirent = readdir(dir); dirent != NULL; dirent = readdir(dir))
{
char filebuf[PKGCONF_BUFSIZE];
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);
if (!str_has_suffix(filebuf, PKG_CONFIG_EXT))
continue;
PKGCONF_TRACE(client, "trying file [%s]", filebuf);
f = fopen(filebuf, "r");
if (f == NULL)
continue;
pkg = pkgconf_pkg_new_from_file(client, filebuf, f);
if (pkg != NULL)
{
if (func(pkg, data))
{
outpkg = pkg;
goto out;
}
pkgconf_pkg_unref(client, pkg);
}
}
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;
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[PKG_CONFIG_PATH_SZ];
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)
{
char pathbuf[PKGCONF_BUFSIZE];
pkgconf_pkg_t *pkg = NULL;
pkgconf_node_t *n;
FILE *f;
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)
{
pkgconf_pkg_t *pkg;
PKGCONF_TRACE(client, "%s is a file", name);
pkg = pkgconf_pkg_new_from_file(client, name, f);
if (pkg != NULL)
{
pkgconf_path_add(pkg_get_parent_dir(pkg, pathbuf, sizeof pathbuf), &client->dir_list, true);
return pkg;
}
}
}
/* check builtins */
if ((pkg = pkgconf_builtin_pkg_get(name)) != NULL)
{
PKGCONF_TRACE(client, "%s is a builtin", name);
return pkg;
}
/* check cache */
if (!(client->flags & PKGCONF_PKG_PKGF_NO_CACHE))
{
if ((pkg = pkgconf_cache_lookup(client, name)) != NULL)
{
PKGCONF_TRACE(client, "%s is cached", name);
return pkg;
}
}
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
out:
pkgconf_cache_add(client, pkg);
return pkg;
}
/*
* !doc
*
* .. c:function:: int pkgconf_compare_version(const char *a, const char *b)
*
* 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 greater, 0 if both versions are equal, 1 if the second version is greater.
* :rtype: int
*/
int
pkgconf_compare_version(const char *a, const char *b)
{
char oldch1, oldch2;
char buf1[PKGCONF_BUFSIZE], buf2[PKGCONF_BUFSIZE];
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;
if (!strcasecmp(a, b))
return 0;
pkgconf_strlcpy(buf1, a, sizeof buf1);
pkgconf_strlcpy(buf2, b, sizeof buf2);
one = str1 = buf1;
two = str2 = buf2;
while (*one || *two)
{
while (*one && !isalnum((unsigned int)*one) && *one != '~')
one++;
while (*two && !isalnum((unsigned int)*two) && *two != '~')
two++;
if (*one == '~' || *two == '~')
{
if (*one != '~')
return -1;
if (*two != '~')
return 1;
one++;
two++;
continue;
}
if (!(*one && *two))
break;
str1 = one;
str2 = two;
if (isdigit((unsigned int)*str1))
{
while (*str1 && isdigit((unsigned int)*str1))
str1++;
while (*str2 && isdigit((unsigned int)*str2))
str2++;
isnum = true;
}
else
{
while (*str1 && isalpha((unsigned int)*str1))
str1++;
while (*str2 && isalpha((unsigned int)*str2))
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);
if (onelen > twolen)
return 1;
else if (twolen > onelen)
return -1;
}
ret = strcmp(one, two);
if (ret)
return ret;
*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 = {
.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){
.prev = NULL,
.next = NULL,
.data = &(pkgconf_tuple_t){
.key = "pc_path",
.value = PKG_DEFAULT_PATH,
},
},
.tail = NULL,
},
};
static pkgconf_pkg_t pkgconf_virtual = {
.id = "pkgconf",
.realname = "pkgconf",
.description = "virtual package defining pkgconf API version supported",
.url = PACKAGE_BUGREPORT,
.version = PACKAGE_VERSION,
.flags = PKGCONF_PKG_PROPF_STATIC,
.vars = {
.head = &(pkgconf_node_t){
.prev = NULL,
.next = NULL,
.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);
typedef struct {
const char *name;
pkgconf_pkg_comparator_t compare;
} pkgconf_pkg_comparator_pair_t;
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},
};
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,
};
/*
* !doc
*
* .. c:function:: const char *pkgconf_pkg_get_comparator(const pkgconf_dependency_t *pkgdep)
*
* 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 *
*/
const char *
pkgconf_pkg_get_comparator(const pkgconf_dependency_t *pkgdep)
{
if (pkgdep->compare >= PKGCONF_ARRAY_SIZE(pkgconf_pkg_comparator_names))
return "???";
return pkgconf_pkg_comparator_names[pkgdep->compare].name;
}
/*
* !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)
return pkg;
if (eflags != NULL)
*eflags |= PKGCONF_PKG_ERRF_PACKAGE_NOT_FOUND;
return NULL;
}
/*
* !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``.
*
* :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 *
*/
pkgconf_pkg_t *
pkgconf_pkg_verify_dependency(pkgconf_client_t *client, pkgconf_dependency_t *pkgdep, unsigned int *eflags)
{
pkgconf_pkg_t *pkg = NULL;
if (eflags != NULL)
*eflags = PKGCONF_PKG_ERRF_OK;
PKGCONF_TRACE(client, "trying to verify dependency: %s", pkgdep->package);
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;
}
return pkgconf_pkg_scan_providers(client, pkgdep, eflags);
}
if (pkg->id == NULL)
pkg->id = strdup(pkgdep->package);
if (pkgconf_pkg_comparator_impls[pkgdep->compare](pkg->version, pkgdep->version) == true)
return pkg;
if (eflags != NULL)
*eflags |= PKGCONF_PKG_ERRF_PACKAGE_VER_MISMATCH;
return pkg;
}
/*
* !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);
}
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;
}
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 eflags = PKGCONF_PKG_ERRF_OK;
pkgconf_node_t *node;
PKGCONF_FOREACH_LIST_ENTRY(deplist->head, node)
{
unsigned int eflags_local = PKGCONF_PKG_ERRF_OK;
pkgconf_dependency_t *depnode = node->data;
pkgconf_pkg_t *pkgdep;
if (*depnode->package == '\0')
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_SEEN)
{
pkgconf_pkg_unref(client, pkgdep);
continue;
}
pkgconf_audit_log_dependency(client, pkgdep, depnode);
pkgdep->flags |= PKGCONF_PKG_PROPF_SEEN;
eflags |= pkgconf_pkg_traverse(client, pkgdep, func, data, depth - 1);
pkgdep->flags &= ~PKGCONF_PKG_PROPF_SEEN;
pkgconf_pkg_unref(client, pkgdep);
}
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->requires.head, childnode)
{
pkgconf_pkg_t *pkgdep;
pkgconf_dependency_t *depnode = childnode->data;
if (*depnode->package == '\0' || strcmp(depnode->package, parentnode->package))
continue;
pkgdep = pkgconf_pkg_verify_dependency(client, parentnode, &eflags);
if (eflags == PKGCONF_PKG_ERRF_OK)
{
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 : "");
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);
return PKGCONF_PKG_ERRF_PACKAGE_CONFLICT;
}
pkgconf_pkg_unref(client, pkgdep);
}
}
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)
*
* 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.
* :return: ``PKGCONF_PKG_ERRF_OK`` on success, else an error code.
* :rtype: unsigned int
*/
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 eflags = PKGCONF_PKG_ERRF_OK;
if (maxdepth == 0)
return eflags;
PKGCONF_TRACE(client, "%s: level %d", root->id, maxdepth);
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);
}
if (!(client->flags & PKGCONF_PKG_PKGF_SKIP_CONFLICTS))
{
eflags = pkgconf_pkg_walk_conflicts_list(client, root, &root->conflicts);
if (eflags != PKGCONF_PKG_ERRF_OK)
return eflags;
}
PKGCONF_TRACE(client, "%s: walking requires list", root->id);
eflags = pkgconf_pkg_walk_list(client, root, &root->requires, func, data, maxdepth);
if (eflags != PKGCONF_PKG_ERRF_OK)
return eflags;
if (client->flags & PKGCONF_PKG_PKGF_SEARCH_PRIVATE)
{
PKGCONF_TRACE(client, "%s: walking requires.private list", root->id);
/* XXX: ugly */
client->flags |= PKGCONF_PKG_PKGF_ITER_PKG_IS_PRIVATE;
eflags = pkgconf_pkg_walk_list(client, root, &root->requires_private, func, data, maxdepth);
client->flags &= ~PKGCONF_PKG_PKGF_ITER_PKG_IS_PRIVATE;
if (eflags != PKGCONF_PKG_ERRF_OK)
return eflags;
}
return eflags;
}
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);
}
}
static void
pkgconf_pkg_cflags_private_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_private.head, node)
{
pkgconf_fragment_t *frag = node->data;
pkgconf_fragment_copy(client, list, frag, true);
}
}
/*
* !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;
eflag = pkgconf_pkg_traverse(client, root, pkgconf_pkg_cflags_collect, list, maxdepth);
if (eflag != PKGCONF_PKG_ERRF_OK)
pkgconf_fragment_free(list);
if (client->flags & PKGCONF_PKG_PKGF_MERGE_PRIVATE_FRAGMENTS)
{
eflag = pkgconf_pkg_traverse(client, root, pkgconf_pkg_cflags_private_collect, list, maxdepth);
if (eflag != PKGCONF_PKG_ERRF_OK)
pkgconf_fragment_free(list);
}
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);
if (eflag != PKGCONF_PKG_ERRF_OK)
{
pkgconf_fragment_free(list);
return eflag;
}
return eflag;
}
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