From ec519727bb1ceda6e7787ccf86237a6aad07137c Mon Sep 17 00:00:00 2001
From: Alex Kiernan <alex.kiernan@gmail.com>
Date: Tue, 10 Mar 2020 11:05:20 +0000
Subject: [PATCH] Handle missing gshadow

gshadow usage is now present in the userdb code. Mask all uses of it to
allow compilation on musl

Upstream-Status: Inappropriate [musl specific]
Signed-off-by: Alex Kiernan <alex.kiernan@gmail.com>
[Rebased for v247]
Signed-off-by: Luca Boccassi <luca.boccassi@microsoft.com>

---
 src/shared/user-record-nss.c | 20 ++++++++++++++++++++
 src/shared/user-record-nss.h |  4 ++++
 src/shared/userdb.c          |  7 ++++++-
 3 files changed, 30 insertions(+), 1 deletion(-)

--- a/src/shared/user-record-nss.c
+++ b/src/shared/user-record-nss.c
@@ -331,8 +331,10 @@ int nss_group_to_group_record(
         if (isempty(grp->gr_name))
                 return -EINVAL;
 
+#if ENABLE_GSHADOW
         if (sgrp && !streq_ptr(sgrp->sg_namp, grp->gr_name))
                 return -EINVAL;
+#endif
 
         g = group_record_new();
         if (!g)
@@ -348,6 +350,7 @@ int nss_group_to_group_record(
 
         g->gid = grp->gr_gid;
 
+#if ENABLE_GSHADOW
         if (sgrp) {
                 if (looks_like_hashed_password(utf8_only(sgrp->sg_passwd))) {
                         g->hashed_password = strv_new(sgrp->sg_passwd);
@@ -363,6 +366,7 @@ int nss_group_to_group_record(
                 if (r < 0)
                         return r;
         }
+#endif
 
         r = json_build(&g->json, JSON_BUILD_OBJECT(
                                        JSON_BUILD_PAIR("groupName", JSON_BUILD_STRING(g->group_name)),
@@ -388,6 +392,7 @@ int nss_sgrp_for_group(const struct grou
         assert(ret_sgrp);
         assert(ret_buffer);
 
+#if ENABLE_GSHADOW
         for (;;) {
                 _cleanup_free_ char *buf = NULL;
                 struct sgrp sgrp, *result;
@@ -416,6 +421,9 @@ int nss_sgrp_for_group(const struct grou
                 buflen *= 2;
                 buf = mfree(buf);
         }
+#else
+        return -ESRCH;
+#endif
 }
 
 int nss_group_record_by_name(
@@ -427,7 +435,9 @@ int nss_group_record_by_name(
         struct group grp, *result;
         bool incomplete = false;
         size_t buflen = 4096;
+#if ENABLE_GSHADOW
         struct sgrp sgrp, *sresult = NULL;
+#endif
         int r;
 
         assert(name);
@@ -457,6 +467,7 @@ int nss_group_record_by_name(
                 buf = mfree(buf);
         }
 
+#if ENABLE_GSHADOW
         if (with_shadow) {
                 r = nss_sgrp_for_group(result, &sgrp, &sbuf);
                 if (r < 0) {
@@ -468,6 +479,9 @@ int nss_group_record_by_name(
                 incomplete = true;
 
         r = nss_group_to_group_record(result, sresult, ret);
+#else
+        r = nss_group_to_group_record(result, NULL, ret);
+#endif
         if (r < 0)
                 return r;
 
@@ -484,7 +498,9 @@ int nss_group_record_by_gid(
         struct group grp, *result;
         bool incomplete = false;
         size_t buflen = 4096;
+#if ENABLE_GSHADOW
         struct sgrp sgrp, *sresult = NULL;
+#endif
         int r;
 
         assert(ret);
@@ -512,6 +528,7 @@ int nss_group_record_by_gid(
                 buf = mfree(buf);
         }
 
+#if ENABLE_GSHADOW
         if (with_shadow) {
                 r = nss_sgrp_for_group(result, &sgrp, &sbuf);
                 if (r < 0) {
@@ -523,6 +540,9 @@ int nss_group_record_by_gid(
                 incomplete = true;
 
         r = nss_group_to_group_record(result, sresult, ret);
+#else
+        r = nss_group_to_group_record(result, NULL, ret);
+#endif
         if (r < 0)
                 return r;
 
--- a/src/shared/user-record-nss.h
+++ b/src/shared/user-record-nss.h
@@ -2,7 +2,11 @@
 #pragma once
 
 #include <grp.h>
+#if ENABLE_GSHADOW
 #include <gshadow.h>
+#else
+struct sgrp;
+#endif
 #include <pwd.h>
 #include <shadow.h>
 
--- a/src/shared/userdb.c
+++ b/src/shared/userdb.c
@@ -1044,13 +1044,15 @@ int groupdb_iterator_get(UserDBIterator
                 if (gr) {
                         _cleanup_free_ char *buffer = NULL;
                         bool incomplete = false;
+#if ENABLE_GSHADOW
                         struct sgrp sgrp;
-
+#endif
                         if (streq_ptr(gr->gr_name, "root"))
                                 iterator->synthesize_root = false;
                         if (gr->gr_gid == GID_NOBODY)
                                 iterator->synthesize_nobody = false;
 
+#if ENABLE_GSHADOW
                         if (!FLAGS_SET(iterator->flags, USERDB_SUPPRESS_SHADOW)) {
                                 r = nss_sgrp_for_group(gr, &sgrp, &buffer);
                                 if (r < 0) {
@@ -1063,6 +1065,9 @@ int groupdb_iterator_get(UserDBIterator
                         }
 
                         r = nss_group_to_group_record(gr, r >= 0 ? &sgrp : NULL, ret);
+#else
+                        r = nss_group_to_group_record(gr, NULL, ret);
+#endif
                         if (r < 0)
                                 return r;