[bug#42899] [PATCH 02/10] gnu: dovecot: Patch and provide a static path for module directory.

[Alexey Abramov <levenson@mmer.org>]

* gnu/local.mk (dist_patch_DATA): Add it.
* gnu/packages/patches/dovecot-use-static-path-for-moduledir.patch: New file.
* gnu/packages/mail.scm (dovecot)[source]: Use it.

Signed-off-by: Alexey Abramov <levenson@mmer.org>
---
 gnu/local.mk                                  |   1 +
 gnu/packages/mail.scm                         |   3 +-
 ...ovecot-use-static-path-for-moduledir.patch | 146 ++++++++++++++++++
 3 files changed, 149 insertions(+), 1 deletion(-)
 create mode 100644 gnu/packages/patches/dovecot-use-static-path-for-moduledir.patch

diff --git a/gnu/local.mk b/gnu/local.mk
index 87bd7094bf..2817deb01f 100644
--- a/gnu/local.mk
+++ b/gnu/local.mk
@@ -900,6 +900,7 @@ dist_patch_DATA =						\
   %D%/packages/patches/doc++-include-directives.patch		\
   %D%/packages/patches/doc++-segfault-fix.patch			\
   %D%/packages/patches/docker-fix-tests.patch			\
+  %D%/packages/patches/dovecot-use-static-path-for-moduledir.patch	\
   %D%/packages/patches/dovecot-trees-support-dovecot-2.3.patch	\
   %D%/packages/patches/doxygen-test.patch			\
   %D%/packages/patches/doxygen-1.8.17-runtests.patch		\
diff --git a/gnu/packages/mail.scm b/gnu/packages/mail.scm
index 98e75fa90f..8e7d5b2fc1 100644
--- a/gnu/packages/mail.scm
+++ b/gnu/packages/mail.scm
@@ -1411,7 +1411,8 @@ facilities for checking incoming mail.")
                            (version-major+minor version) "/"
                            "dovecot-" version ".tar.gz"))
        (sha256
-        (base32 "1p5gp8jbavcsaara5mfn5cbrnlxssajnchczbgmmfzr7228fmnfk"))))
+        (base32 "1p5gp8jbavcsaara5mfn5cbrnlxssajnchczbgmmfzr7228fmnfk"))
+       (patches (search-patches "dovecot-use-static-path-for-moduledir.patch"))))
     (build-system gnu-build-system)
     (native-inputs
      `(("pkg-config" ,pkg-config)))
diff --git a/gnu/packages/patches/dovecot-use-static-path-for-moduledir.patch b/gnu/packages/patches/dovecot-use-static-path-for-moduledir.patch
new file mode 100644
index 0000000000..da9f4034f4
--- /dev/null
+++ b/gnu/packages/patches/dovecot-use-static-path-for-moduledir.patch
@@ -0,0 +1,146 @@
+Subject: [PATCH] Use static path for moduledir.
+
+Patch was taken from NixOS repo. Make dovecot look for plugins in
+/etc/dovecot/modules so we can symlink plugins from several packages
+there.
+
+The rational behind the patch can be found here:
+https://dovecot.org/pipermail/dovecot/2013-April/089931.html
+
+---
+ src/auth/main.c                         | 4 ++--
+ src/config/config-parser.c              | 2 +-
+ src/config/config-parser.h              | 2 +-
+ src/dict/main.c                         | 2 +-
+ src/doveadm/doveadm-util.c              | 4 ++--
+ src/lib-fs/fs-api.c                     | 2 +-
+ src/lib-ssl-iostream/iostream-ssl.c     | 4 ++--
+ src/lib-storage/mail-storage-settings.c | 2 +-
+ 9 files changed, 12 insertions(+), 12 deletions(-)
+
+diff --git a/src/auth/main.c b/src/auth/main.c
+index 2dbf9e176..b1e778ab7 100644
+--- a/src/auth/main.c
++++ b/src/auth/main.c
+@@ -192,7 +192,7 @@ static void main_preinit(void)
+ 	mod_set.debug = global_auth_settings->debug;
+ 	mod_set.filter_callback = auth_module_filter;
+
+-	modules = module_dir_load(AUTH_MODULE_DIR, NULL, &mod_set);
++	modules = module_dir_load("/etc/dovecot/modules/auth", NULL, &mod_set);
+ 	module_dir_init(modules);
+
+ 	if (!worker)
+@@ -223,7 +223,7 @@ void auth_module_load(const char *names)
+ 	mod_set.debug = global_auth_settings->debug;
+ 	mod_set.ignore_missing = TRUE;
+
+-	modules = module_dir_load_missing(modules, AUTH_MODULE_DIR, names,
++	modules = module_dir_load_missing(modules, "/etc/dovecot/modules/auth", names,
+ 					  &mod_set);
+ 	module_dir_init(modules);
+ }
+diff --git a/src/config/config-parser.c b/src/config/config-parser.c
+index 6894123ea..07e9fecb4 100644
+--- a/src/config/config-parser.c
++++ b/src/config/config-parser.c
+@@ -1077,7 +1077,7 @@ void config_parse_load_modules(void)
+
+ 	i_zero(&mod_set);
+ 	mod_set.abi_version = DOVECOT_ABI_VERSION;
+-	modules = module_dir_load(CONFIG_MODULE_DIR, NULL, &mod_set);
++	modules = module_dir_load("/etc/dovecot/modules/settings", NULL, &mod_set);
+ 	module_dir_init(modules);
+
+ 	i_array_init(&new_roots, 64);
+diff --git a/src/config/config-parser.h b/src/config/config-parser.h
+index e0a0a5bea..32bd76804 100644
+--- a/src/config/config-parser.h
++++ b/src/config/config-parser.h
+@@ -1,7 +1,7 @@
+ #ifndef CONFIG_PARSER_H
+ #define CONFIG_PARSER_H
+
+-#define CONFIG_MODULE_DIR MODULEDIR"/settings"
++#define CONFIG_MODULE_DIR "/etc/dovecot/modules/settings"
+
+ #define IS_WHITE(c) ((c) == ' ' || (c) == '\t')
+
+diff --git a/src/dict/main.c b/src/dict/main.c
+index 722ed025f..4ed12ae5e 100644
+--- a/src/dict/main.c
++++ b/src/dict/main.c
+@@ -104,7 +104,7 @@ static void main_init(void)
+ 	mod_set.abi_version = DOVECOT_ABI_VERSION;
+ 	mod_set.require_init_funcs = TRUE;
+
+-	modules = module_dir_load(DICT_MODULE_DIR, NULL, &mod_set);
++	modules = module_dir_load("/etc/dovecot/modules/dict", NULL, &mod_set);
+ 	module_dir_init(modules);
+
+ 	/* Register only after loading modules. They may contain SQL drivers,
+diff --git a/src/doveadm/doveadm-util.c b/src/doveadm/doveadm-util.c
+index a65ef7f72..c19eba06c 100644
+--- a/src/doveadm/doveadm-util.c
++++ b/src/doveadm/doveadm-util.c
+@@ -33,7 +33,7 @@ void doveadm_load_modules(void)
+ 	mod_set.debug = doveadm_debug;
+ 	mod_set.ignore_dlopen_errors = TRUE;
+
+-	modules = module_dir_load_missing(modules, DOVEADM_MODULEDIR,
++	modules = module_dir_load_missing(modules, "/etc/dovecot/modules/doveadm",
+ 					  NULL, &mod_set);
+ 	module_dir_init(modules);
+ }
+@@ -58,7 +58,7 @@ bool doveadm_has_unloaded_plugin(const char *name)
+ 			return FALSE;
+ 	}
+
+-	dir = opendir(DOVEADM_MODULEDIR);
++	dir = opendir("/etc/dovecot/modules/doveadm");
+ 	if (dir == NULL)
+ 		return FALSE;
+
+diff --git a/src/lib-fs/fs-api.c b/src/lib-fs/fs-api.c
+index a939f612d..846cf86e6 100644
+--- a/src/lib-fs/fs-api.c
++++ b/src/lib-fs/fs-api.c
+@@ -114,7 +114,7 @@ static void fs_class_try_load_plugin(const char *driver)
+ 	mod_set.abi_version = DOVECOT_ABI_VERSION;
+ 	mod_set.ignore_missing = TRUE;
+
+-	fs_modules = module_dir_load_missing(fs_modules, MODULE_DIR,
++	fs_modules = module_dir_load_missing(fs_modules, "/etc/dovecot/modules",
+ 					     module_name, &mod_set);
+ 	module_dir_init(fs_modules);
+
+diff --git a/src/lib-ssl-iostream/iostream-ssl.c b/src/lib-ssl-iostream/iostream-ssl.c
+index f62c80d37..900ab46c4 100644
+--- a/src/lib-ssl-iostream/iostream-ssl.c
++++ b/src/lib-ssl-iostream/iostream-ssl.c
+@@ -54,8 +54,8 @@ int ssl_module_load(const char **error_r)
+ 	mod_set.abi_version = DOVECOT_ABI_VERSION;
+ 	mod_set.setting_name = "<built-in lib-ssl-iostream lookup>";
+ 	mod_set.require_init_funcs = TRUE;
+-	ssl_module = module_dir_load(MODULE_DIR, plugin_name, &mod_set);
+-	if (module_dir_try_load_missing(&ssl_module, MODULE_DIR, plugin_name,
++	ssl_module = module_dir_load("/etc/dovecot/modules", plugin_name, &mod_set);
++	if (module_dir_try_load_missing(&ssl_module, "/etc/dovecot/modules", plugin_name,
+ 					&mod_set, error_r) < 0)
+ 		return -1;
+ 	module_dir_init(ssl_module);
+diff --git a/src/lib-storage/mail-storage-settings.c b/src/lib-storage/mail-storage-settings.c
+index b314b529c..705509456 100644
+--- a/src/lib-storage/mail-storage-settings.c
++++ b/src/lib-storage/mail-storage-settings.c
+@@ -337,7 +337,7 @@ static const struct mail_user_settings mail_user_default_settings = {
+ 	.last_valid_gid = 0,
+
+ 	.mail_plugins = "",
+-	.mail_plugin_dir = MODULEDIR,
++	.mail_plugin_dir = "/etc/dovecot/modules",
+
+ 	.mail_log_prefix = "%s(%u)<%{pid}><%{session}>: ",
+
+--
+2.27.0
-- 
2.27.0