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shadow-utils/shadow-4.8.1-libsubid_simplify_ranges_variable.patch
Iker Pedrosa fbf9d3a3ea libsubid initial implementation 
Resolves: #1859252

- libsubid: creation and nsswitch support
- Creation of subid and subid-devel subpackages
- man: mention NSS in new[ug]idmap manpages
- libsubid: move development header to shadow folder
- libsubid: don't print error messages on stderr by default
- libsubid: libsubid_init return false if out of memory
- useradd: fix SUB_UID_COUNT=0
- libsubid: don't return owner in list_owner_ranges API call
- libsubid: libsubid_init don't print messages on error
- libsubid: fix newusers when nss provides subids
- man: clarify subid delegation
- libsubid: make shadow_logfd not extern
- login.defs: include HMAC_CRYPTO_ALGO key
2021-06-25 09:28:52 +02:00

265 lines
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diff -up shadow-4.8.1/configure.ac.libsubid_simplify_ranges_variable shadow-4.8.1/configure.ac
--- shadow-4.8.1/configure.ac.libsubid_simplify_ranges_variable 2021-05-24 15:02:56.165917066 +0200
+++ shadow-4.8.1/configure.ac 2021-05-24 15:02:56.184917324 +0200
@@ -1,6 +1,6 @@
dnl Process this file with autoconf to produce a configure script.
AC_PREREQ([2.69])
-m4_define([libsubid_abi_major], 2)
+m4_define([libsubid_abi_major], 3)
m4_define([libsubid_abi_minor], 0)
m4_define([libsubid_abi_micro], 0)
m4_define([libsubid_abi], [libsubid_abi_major.libsubid_abi_minor.libsubid_abi_micro])
diff -up shadow-4.8.1/lib/prototypes.h.libsubid_simplify_ranges_variable shadow-4.8.1/lib/prototypes.h
--- shadow-4.8.1/lib/prototypes.h.libsubid_simplify_ranges_variable 2021-05-24 15:02:56.184917324 +0200
+++ shadow-4.8.1/lib/prototypes.h 2021-05-24 16:38:57.610619467 +0200
@@ -309,16 +309,15 @@ struct subid_nss_ops {
*
* @owner - string representing username being queried
* @id_type - subuid or subgid
- * @ranges - pointer to an array of struct subordinate_range pointers, or
- * NULL. The returned array of struct subordinate_range and its
- * members must be freed by the caller.
+ * @ranges - pointer to an array of struct subid_range, or NULL. The
+ * returned array must be freed by the caller.
* @count - pointer to an integer into which the number of returned ranges
* is written.
* returns success if the module was able to determine an answer,
* else an error status.
*/
- enum subid_status (*list_owner_ranges)(const char *owner, enum subid_type id_type, struct subordinate_range ***ranges, int *count);
+ enum subid_status (*list_owner_ranges)(const char *owner, enum subid_type id_type, struct subid_range **ranges, int *count);
/*
* nss_find_subid_owners: find uids who own a given subuid or subgid.
diff -up shadow-4.8.1/libsubid/api.c.libsubid_simplify_ranges_variable shadow-4.8.1/libsubid/api.c
--- shadow-4.8.1/libsubid/api.c.libsubid_simplify_ranges_variable 2021-05-24 15:03:01.467989079 +0200
+++ shadow-4.8.1/libsubid/api.c 2021-05-24 16:42:32.091584531 +0200
@@ -68,26 +68,21 @@ bool libsubid_init(const char *progname,
}
static
-int get_subid_ranges(const char *owner, enum subid_type id_type, struct subordinate_range ***ranges)
+int get_subid_ranges(const char *owner, enum subid_type id_type, struct subid_range **ranges)
{
return list_owner_ranges(owner, id_type, ranges);
}
-int get_subuid_ranges(const char *owner, struct subordinate_range ***ranges)
+int get_subuid_ranges(const char *owner, struct subid_range **ranges)
{
return get_subid_ranges(owner, ID_TYPE_UID, ranges);
}
-int get_subgid_ranges(const char *owner, struct subordinate_range ***ranges)
+int get_subgid_ranges(const char *owner, struct subid_range **ranges)
{
return get_subid_ranges(owner, ID_TYPE_GID, ranges);
}
-void subid_free_ranges(struct subordinate_range **ranges, int count)
-{
- return free_subordinate_ranges(ranges, count);
-}
-
static
int get_subid_owner(unsigned long id, enum subid_type id_type, uid_t **owner)
{
diff -up shadow-4.8.1/libsubid/subid.h.libsubid_simplify_ranges_variable shadow-4.8.1/libsubid/subid.h
--- shadow-4.8.1/libsubid/subid.h.libsubid_simplify_ranges_variable 2021-05-24 15:03:01.468989093 +0200
+++ shadow-4.8.1/libsubid/subid.h 2021-05-24 16:43:49.697657383 +0200
@@ -3,6 +3,15 @@
#ifndef SUBID_RANGE_DEFINED
#define SUBID_RANGE_DEFINED 1
+
+/* subid_range is just a starting point and size of a range */
+struct subid_range {
+ unsigned long start;
+ unsigned long count;
+};
+
+/* subordinage_range is a subid_range plus an owner, representing
+ * a range in /etc/subuid or /etc/subgid */
struct subordinate_range {
const char *owner;
unsigned long start;
@@ -41,32 +50,27 @@ bool libsubid_init(const char *progname,
* get_subuid_ranges: return a list of UID ranges for a user
*
* @owner: username being queried
- * @ranges: a pointer to a subordinate range ** in which the result will be
- * returned.
+ * @ranges: a pointer to an array of subid_range structs in which the result
+ * will be returned.
+ *
+ * The caller must free(ranges) when done.
*
* returns: number of ranges found, ir < 0 on error.
*/
-int get_subuid_ranges(const char *owner, struct subordinate_range ***ranges);
+int get_subuid_ranges(const char *owner, struct subid_range **ranges);
/*
* get_subgid_ranges: return a list of GID ranges for a user
*
* @owner: username being queried
- * @ranges: a pointer to a subordinate range ** in which the result will be
- * returned.
+ * @ranges: a pointer to an array of subid_range structs in which the result
+ * will be returned.
*
- * returns: number of ranges found, ir < 0 on error.
- */
-int get_subgid_ranges(const char *owner, struct subordinate_range ***ranges);
-
-/*
- * subid_free_ranges: free an array of subordinate_ranges returned by either
- * get_subuid_ranges() or get_subgid_ranges().
+ * The caller must free(ranges) when done.
*
- * @ranges: the ranges to free
- * @count: the number of ranges in @ranges
+ * returns: number of ranges found, ir < 0 on error.
*/
-void subid_free_ranges(struct subordinate_range **ranges, int count);
+int get_subgid_ranges(const char *owner, struct subid_range **ranges);
/*
* get_subuid_owners: return a list of uids to which the given uid has been
diff -up shadow-4.8.1/lib/subordinateio.c.libsubid-simplify shadow-4.8.1/lib/subordinateio.c
--- shadow-4.8.1/lib/subordinateio.c.libsubid-simplify 2021-05-24 17:27:38.721035241 +0200
+++ shadow-4.8.1/lib/subordinateio.c 2021-05-24 17:28:06.481420946 +0200
@@ -11,6 +11,7 @@
#include <stdio.h>
#include "commonio.h"
#include "subordinateio.h"
+#include "../libsubid/subid.h"
#include <sys/types.h>
#include <pwd.h>
#include <ctype.h>
@@ -308,25 +309,21 @@ static bool have_range(struct commonio_d
return false;
}
-static bool append_range(struct subordinate_range ***ranges, const struct subordinate_range *new, int n)
+static bool append_range(struct subid_range **ranges, const struct subordinate_range *new, int n)
{
- struct subordinate_range *tmp;
if (!*ranges) {
- *ranges = malloc(sizeof(struct subordinate_range *));
+ *ranges = malloc(sizeof(struct subid_range));
if (!*ranges)
return false;
} else {
- struct subordinate_range **new;
- new = realloc(*ranges, (n + 1) * (sizeof(struct subordinate_range *)));
- if (!new)
+ struct subid_range *alloced;
+ alloced = realloc(*ranges, (n + 1) * (sizeof(struct subid_range)));
+ if (!alloced)
return false;
- *ranges = new;
+ *ranges = alloced;
}
- (*ranges)[n] = NULL;
- tmp = subordinate_dup(new);
- if (!tmp)
- return false;
- (*ranges)[n] = tmp;
+ (*ranges)[n].start = new->start;
+ (*ranges)[n].count = new->count;
return true;
}
@@ -785,10 +782,10 @@ gid_t sub_gid_find_free_range(gid_t min,
*
* The caller must free the subordinate range list.
*/
-int list_owner_ranges(const char *owner, enum subid_type id_type, struct subordinate_range ***in_ranges)
+int list_owner_ranges(const char *owner, enum subid_type id_type, struct subid_range **in_ranges)
{
// TODO - need to handle owner being either uid or username
- struct subordinate_range **ranges = NULL;
+ struct subid_range *ranges = NULL;
const struct subordinate_range *range;
struct commonio_db *db;
enum subid_status status;
@@ -826,7 +823,7 @@ int list_owner_ranges(const char *owner,
while ((range = commonio_next(db)) != NULL) {
if (0 == strcmp(range->owner, owner)) {
if (!append_range(&ranges, range, count++)) {
- free_subordinate_ranges(ranges, count-1);
+ free(ranges);
ranges = NULL;
count = -1;
goto out;
diff -up shadow-4.8.1/lib/subordinateio.h.libsubid_simplify_ranges_variable shadow-4.8.1/lib/subordinateio.h
--- shadow-4.8.1/lib/subordinateio.h.libsubid_simplify_ranges_variable 2021-05-24 15:03:01.467989079 +0200
+++ shadow-4.8.1/lib/subordinateio.h 2021-05-24 16:40:56.978269647 +0200
@@ -25,7 +25,7 @@ extern int sub_uid_unlock (void);
extern int sub_uid_add (const char *owner, uid_t start, unsigned long count);
extern int sub_uid_remove (const char *owner, uid_t start, unsigned long count);
extern uid_t sub_uid_find_free_range(uid_t min, uid_t max, unsigned long count);
-extern int list_owner_ranges(const char *owner, enum subid_type id_type, struct subordinate_range ***ranges);
+extern int list_owner_ranges(const char *owner, enum subid_type id_type, struct subid_range **ranges);
extern bool new_subid_range(struct subordinate_range *range, enum subid_type id_type, bool reuse);
extern bool release_subid_range(struct subordinate_range *range, enum subid_type id_type);
extern int find_subid_owners(unsigned long id, enum subid_type id_type, uid_t **uids);
diff -up shadow-4.8.1/src/list_subid_ranges.c.libsubid_simplify_ranges_variable shadow-4.8.1/src/list_subid_ranges.c
--- shadow-4.8.1/src/list_subid_ranges.c.libsubid_simplify_ranges_variable 2021-05-24 15:03:01.468989093 +0200
+++ shadow-4.8.1/src/list_subid_ranges.c 2021-05-24 16:45:10.884779740 +0200
@@ -17,27 +17,29 @@ void usage(void)
int main(int argc, char *argv[])
{
int i, count=0;
- struct subordinate_range **ranges;
+ struct subid_range *ranges;
+ const char *owner;
Prog = Basename (argv[0]);
shadow_logfd = stderr;
- if (argc < 2) {
+ if (argc < 2)
usage();
- }
- if (argc == 3 && strcmp(argv[1], "-g") == 0)
- count = get_subgid_ranges(argv[2], &ranges);
- else if (argc == 2 && strcmp(argv[1], "-h") == 0)
+ owner = argv[1];
+ if (argc == 3 && strcmp(argv[1], "-g") == 0) {
+ owner = argv[2];
+ count = get_subgid_ranges(owner, &ranges);
+ } else if (argc == 2 && strcmp(argv[1], "-h") == 0) {
usage();
- else
- count = get_subuid_ranges(argv[1], &ranges);
+ } else {
+ count = get_subuid_ranges(owner, &ranges);
+ }
if (!ranges) {
fprintf(stderr, "Error fetching ranges\n");
exit(1);
}
for (i = 0; i < count; i++) {
- printf("%d: %s %lu %lu\n", i, ranges[i]->owner,
- ranges[i]->start, ranges[i]->count);
+ printf("%d: %s %lu %lu\n", i, owner,
+ ranges[i].start, ranges[i].count);
}
- subid_free_ranges(ranges, count);
return 0;
}
diff -up shadow-4.8.1/tests/libsubid/04_nss/libsubid_zzz.c.libsubid_simplify_ranges_variable shadow-4.8.1/tests/libsubid/04_nss/libsubid_zzz.c
--- shadow-4.8.1/tests/libsubid/04_nss/libsubid_zzz.c.libsubid_simplify_ranges_variable 2021-05-24 15:02:56.166917079 +0200
+++ shadow-4.8.1/tests/libsubid/04_nss/libsubid_zzz.c 2021-05-24 15:03:01.469989106 +0200
@@ -113,7 +113,7 @@ enum subid_status shadow_subid_list_owne
if (strcmp(owner, "conn") == 0)
return SUBID_STATUS_ERROR_CONN;
- *ranges = NULL;
+ *in_ranges = NULL;
if (strcmp(owner, "user1") != 0 && strcmp(owner, "ubuntu") != 0 &&
strcmp(owner, "group1") != 0)
return SUBID_STATUS_SUCCESS;
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