[PATCH v2 2/2] Refactor common functions between POSIX and Windows implementation

[<aidan_leuck@selinc.com>]

From: aidaleuc <aidan_leuck@selinc.com>

Signed-off-by: aidaleuc <aidan_leuck@selinc.com>
---
 qga/commands-posix-ssh.c   | 47 +--------------------------
 qga/commands-ssh-core.c    | 57 ++++++++++++++++++++++++++++++++
 qga/commands-ssh-core.h    |  8 +++++
 qga/commands-windows-ssh.c | 66 +-------------------------------------
 qga/meson.build            |  3 +-
 5 files changed, 69 insertions(+), 112 deletions(-)
 create mode 100644 qga/commands-ssh-core.c
 create mode 100644 qga/commands-ssh-core.h

diff --git a/qga/commands-posix-ssh.c b/qga/commands-posix-ssh.c
index 236f80de44..9a71b109f9 100644
--- a/qga/commands-posix-ssh.c
+++ b/qga/commands-posix-ssh.c
@@ -9,6 +9,7 @@
 #include <locale.h>
 #include <pwd.h>
 
+#include "commands-ssh-core.h"
 #include "qapi/error.h"
 #include "qga-qapi-commands.h"
 
@@ -80,37 +81,6 @@ mkdir_for_user(const char *path, const struct passwd *p,
     return true;
 }
 
-static bool
-check_openssh_pub_key(const char *key, Error **errp)
-{
-    /* simple sanity-check, we may want more? */
-    if (!key || key[0] == '#' || strchr(key, '\n')) {
-        error_setg(errp, "invalid OpenSSH public key: '%s'", key);
-        return false;
-    }
-
-    return true;
-}
-
-static bool
-check_openssh_pub_keys(strList *keys, size_t *nkeys, Error **errp)
-{
-    size_t n = 0;
-    strList *k;
-
-    for (k = keys; k != NULL; k = k->next) {
-        if (!check_openssh_pub_key(k->value, errp)) {
-            return false;
-        }
-        n++;
-    }
-
-    if (nkeys) {
-        *nkeys = n;
-    }
-    return true;
-}
-
 static bool
 write_authkeys(const char *path, const GStrv keys,
                const struct passwd *p, Error **errp)
@@ -139,21 +109,6 @@ write_authkeys(const char *path, const GStrv keys,
     return true;
 }
 
-static GStrv
-read_authkeys(const char *path, Error **errp)
-{
-    g_autoptr(GError) err = NULL;
-    g_autofree char *contents = NULL;
-
-    if (!g_file_get_contents(path, &contents, NULL, &err)) {
-        error_setg(errp, "failed to read '%s': %s", path, err->message);
-        return NULL;
-    }
-
-    return g_strsplit(contents, "\n", -1);
-
-}
-
 void
 qmp_guest_ssh_add_authorized_keys(const char *username, strList *keys,
                                   bool has_reset, bool reset,
diff --git a/qga/commands-ssh-core.c b/qga/commands-ssh-core.c
new file mode 100644
index 0000000000..51353b396d
--- /dev/null
+++ b/qga/commands-ssh-core.c
@@ -0,0 +1,57 @@
+/*
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
+#include "qemu/osdep.h"
+#include <qga-qapi-types.h>
+#include <stdbool.h>
+#include "qapi/error.h"
+#include "commands-ssh-core.h"
+
+GStrv read_authkeys(const char *path, Error **errp)
+{
+    g_autoptr(GError) err = NULL;
+    g_autofree char *contents = NULL;
+
+    if (!g_file_get_contents(path, &contents, NULL, &err))
+    {
+        error_setg(errp, "failed to read '%s': %s", path, err->message);
+        return NULL;
+    }
+
+    return g_strsplit(contents, "\n", -1);
+}
+
+bool check_openssh_pub_keys(strList *keys, size_t *nkeys, Error **errp)
+{
+    size_t n = 0;
+    strList *k;
+
+    for (k = keys; k != NULL; k = k->next)
+    {
+        if (!check_openssh_pub_key(k->value, errp))
+        {
+            return false;
+        }
+        n++;
+    }
+
+    if (nkeys)
+    {
+        *nkeys = n;
+    }
+    return true;
+}
+
+bool check_openssh_pub_key(const char *key, Error **errp)
+{
+    /* simple sanity-check, we may want more? */
+    if (!key || key[0] == '#' || strchr(key, '\n'))
+    {
+        error_setg(errp, "invalid OpenSSH public key: '%s'", key);
+        return false;
+    }
+
+    return true;
+}
\ No newline at end of file
diff --git a/qga/commands-ssh-core.h b/qga/commands-ssh-core.h
new file mode 100644
index 0000000000..f26d66c846
--- /dev/null
+++ b/qga/commands-ssh-core.h
@@ -0,0 +1,8 @@
+/*
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
+GStrv read_authkeys(const char *path, Error **errp);
+bool check_openssh_pub_keys(strList *keys, size_t *nkeys, Error **errp);
+bool check_openssh_pub_key(const char *key, Error **errp);
\ No newline at end of file
diff --git a/qga/commands-windows-ssh.c b/qga/commands-windows-ssh.c
index 566266f465..e8cbcd0779 100644
--- a/qga/commands-windows-ssh.c
+++ b/qga/commands-windows-ssh.c
@@ -16,6 +16,7 @@
 #include <aclapi.h>
 #include <qga-qapi-types.h>
 
+#include "commands-ssh-core.h"
 #include "commands-windows-ssh.h"
 #include "guest-agent-core.h"
 #include "limits.h"
@@ -35,71 +36,6 @@
 #define ADMIN_SID "S-1-5-32-544"
 #define WORLD_SID "S-1-1-0"
 
-/*
- * Reads the authorized_keys file and returns an array of strings for each entry
- *
- * parameters:
- * path -> Path to the authorized_keys file
- * errp -> Error structure that will contain errors upon failure.
- * returns: Array of strings, where each entry is an authorized key.
- */
-static GStrv read_authkeys(const char *path, Error **errp)
-{
-  g_autoptr(GError) err = NULL;
-  g_autofree char *contents = NULL;
-
-  if (!g_file_get_contents(path, &contents, NULL, &err)) {
-    error_setg(errp, "failed to read '%s': %s", path, err->message);
-    return NULL;
-  }
-
-  return g_strsplit(contents, "\n", -1);
-}
-
-/*
- * Checks if a OpenSSH key is valid
- * parameters:
- * key* Key to check for validity
- * errp -> Error structure that will contain errors upon failure.
- * returns: true if key is valid, false otherwise
- */
-static bool check_openssh_pub_key(const char *key, Error **errp)
-{
-  /* simple sanity-check, we may want more? */
-  if (!key || key[0] == '#' || strchr(key, '\n')) {
-    error_setg(errp, "invalid OpenSSH public key: '%s'", key);
-    return false;
-  }
-
-  return true;
-}
-
-/*
- * Checks if all openssh keys in the array are valid
- *
- * parameters:
- * keys -> Array of keys to check
- * errp -> Error structure that will contain errors upon failure.
- * returns: true if all keys are valid, false otherwise
- */
-static bool check_openssh_pub_keys(strList *keys, size_t *nkeys, Error **errp)
-{
-  size_t n = 0;
-  strList *k;
-
-  for (k = keys; k != NULL; k = k->next) {
-    if (!check_openssh_pub_key(k->value, errp)) {
-      return false;
-    }
-    n++;
-  }
-
-  if (nkeys) {
-    *nkeys = n;
-  }
-  return true;
-}
-
 /*
  * Frees userInfo structure. This implements the g_auto cleanup
  * for the structure.
diff --git a/qga/meson.build b/qga/meson.build
index 4c4a493ec5..820ffcb7df 100644
--- a/qga/meson.build
+++ b/qga/meson.build
@@ -65,7 +65,8 @@ qga_ss.add(files(
   'commands.c',
   'guest-agent-command-state.c',
   'main.c',
-  'cutils.c'
+  'cutils.c',
+  'commands-ssh-core.c'
 ))
 if host_os == 'windows'
   qga_ss.add(files(
-- 
2.44.0