lib/configuration.c, lib/home.c: Introduce environment variables.

[disorder] / lib / configuration.c

diff --git a/lib/configuration.c b/lib/configuration.c
index a87957e4ea707f1ad1252f638174ad70281bfdec..56a96964d9b422ebea6289a6e09437b7aba0273e 100644 (file)
--- a/lib/configuration.c
+++ b/lib/configuration.c
@@ -37,9 +37,6 @@
 # include <langinfo.h>
 #endif
 
-#if HAVE_SHLOBJ_H
-# include <Shlobj.h>
-#endif
 #include <signal.h>
 
 #include "rights.h"
@@ -48,6 +45,7 @@
 #include "log.h"
 #include "split.h"
 #include "syscalls.h"
+#include "home.h"
 #include "table.h"
 #include "inputline.h"
 #include "charset.h"
@@ -984,6 +982,24 @@ static int validate_pausemode(const struct config_state attribute((unused)) *cs,
   return -1;
 }
 
+/** @brief Validate an MTU-discovery setting
+ * @param cs Configuration state
+ * @param nvec Length of (proposed) new value
+ * @param vec Elements of new value
+ * @return 0 on success, non-0 on error
+ */
+static int validate_mtu_discovery(const struct config_state attribute((unused)) *cs,
+                                 int nvec,
+                                 char **vec) {
+  if (nvec == 1 &&
+      (!strcmp(vec[0], "default") ||
+       !strcmp(vec[0], "yes") ||
+       !strcmp(vec[0], "no")))
+    return 0;
+  disorder_error(0, "%s:%d: invalid MTU-discovery setting", cs->path, cs->line);
+  return -1;
+}
+
 /** @brief Validate a destination network address
  * @param cs Configuration state
  * @param nvec Length of (proposed) new value
@@ -1093,10 +1109,12 @@ static const struct conf conf[] = {
   { C(replay_min),       &type_integer,          validate_non_negative },
   { C(rtp_always_request), &type_boolean,       validate_any },
   { C(rtp_delay_threshold), &type_integer,       validate_positive },
+  { C(rtp_instance_name), &type_string,                 validate_any },
   { C(rtp_max_payload),         &type_integer,          validate_positive },
   { C(rtp_maxbuffer),   &type_integer,          validate_non_negative },
   { C(rtp_minbuffer),   &type_integer,          validate_non_negative },
   { C(rtp_mode),         &type_string,           validate_any },
+  { C(rtp_mtu_discovery), &type_string,                 validate_mtu_discovery },
   { C(rtp_rcvbuf),      &type_integer,          validate_non_negative },
   { C(rtp_request_address), &type_netaddress,   validate_inetaddr },
   { C(rtp_verbose),      &type_boolean,          validate_any },
@@ -1411,6 +1429,7 @@ static struct config *config_default(void) {
   c->connect.af = -1;
   c->rtp_mode = xstrdup("auto");
   c->rtp_max_payload = -1;
+  c->rtp_mtu_discovery = xstrdup("default");
   return c;
 }
 
@@ -1433,8 +1452,11 @@ char *config_get_file2(struct config *c, const char *name) {
 /** @brief Set the default configuration file */
 static void set_configfile(void) {
 #if !_WIN32
-  if(!configfile)
-    byte_xasprintf(&configfile, "%s/config", pkgconfdir);
+  if(!configfile) {
+    configfile = getenv("DISORDER_CONFIG");
+    if(!configfile)
+      byte_xasprintf(&configfile, "%s/config", pkgconfdir);
+  }
 #endif
 }
 
@@ -1585,7 +1607,7 @@ int config_read(int server,
     xfree(privconf);
 #endif
     /* if we have a password file, read it */
-    if((privconf = config_userconf(0, pw))
+    if((privconf = config_userconf())
        && access(privconf, F_OK) == 0
        && config_include(c, privconf))
       return -1;
@@ -1651,22 +1673,10 @@ char *config_private(void) {
 }
 
 /** @brief Return the path to user's personal configuration file */
-char *config_userconf(const char *home, const struct passwd *pw) {
-  char *s;
-#if _WIN32
-  wchar_t *wpath = 0;
-  char *appdata;
-  if(SHGetKnownFolderPath(&FOLDERID_RoamingAppData, 0, NULL, &wpath) != S_OK)
-    disorder_fatal(0, "error calling SHGetKnownFolderPath");
-  appdata = win_wtomb(wpath);
-  CoTaskMemFree(wpath);
-  byte_xasprintf(&s, "%s\\DisOrder\\passwd", appdata);
-#else
-  if(!home && !pw && !(pw = getpwuid(getuid())))
-    disorder_fatal(0, "cannot determine our username");
-  byte_xasprintf(&s, "%s/.disorder/passwd", home ? home : pw->pw_dir);
-#endif
-  return s;
+char *config_userconf(void) {
+  char *t;
+  if((t = getenv("DISORDER_USERCONFIG"))) return xstrdup(t);
+  return profile_filename("passwd");
 }
 
 #if !_WIN32
@@ -1675,7 +1685,9 @@ char *config_usersysconf(const struct passwd *pw) {
   char *s;
 
   set_configfile();
-  if(!strchr(pw->pw_name, '/')) {
+  if((s = getenv("DISORDER_USERCONFIG_SYS")))
+    return xstrdup(s);
+  else if(!strchr(pw->pw_name, '/')) {
     byte_xasprintf(&s, "%s.%s", configfile, pw->pw_name);
     return s;
   } else