added safety check (should never happen style)

[rocksndiamonds.git] / src / libgame / misc.c

diff --git a/src/libgame/misc.c b/src/libgame/misc.c
index 7863159bf22ca434afb0952cc7b4bb0e9962b2e2..7a3afc688ae3636bec5705994f0846933987d6a8 100644 (file)
--- a/src/libgame/misc.c
+++ b/src/libgame/misc.c
@@ -21,7 +21,7 @@
 
 #include "platform.h"
 
-#if !defined(PLATFORM_WIN32)
+#if defined(PLATFORM_UNIX)
 #include <pwd.h>
 #include <sys/param.h>
 #endif
@@ -783,6 +783,48 @@ static char *get_corrected_real_name(char *real_name)
 }
 #endif
 
+#if defined(PLATFORM_UNIX)
+static struct passwd *getPasswdEntry(void)
+{
+#if defined(PLATFORM_EMSCRIPTEN)
+  // currently not fully supported; force fallback to default values
+  return NULL;
+#else
+  return getpwuid(getuid());
+#endif
+}
+
+char *getUnixLoginName(void)
+{
+  struct passwd *pwd = getPasswdEntry();
+
+  if (pwd != NULL && strlen(pwd->pw_name) != 0)
+    return pwd->pw_name;
+
+  return NULL;
+}
+
+char *getUnixRealName(void)
+{
+  struct passwd *pwd = getPasswdEntry();
+
+  if (pwd != NULL && strlen(pwd->pw_gecos) != 0)
+    return pwd->pw_gecos;
+
+  return NULL;
+}
+
+char *getUnixHomeDir(void)
+{
+  struct passwd *pwd = getPasswdEntry();
+
+  if (pwd != NULL && strlen(pwd->pw_dir) != 0)
+    return pwd->pw_dir;
+
+  return NULL;
+}
+#endif
+
 char *getLoginName(void)
 {
   static char *login_name = NULL;
@@ -791,6 +833,7 @@ char *getLoginName(void)
   if (login_name == NULL)
   {
     unsigned long buffer_size = MAX_USERNAME_LEN + 1;
+
     login_name = checked_malloc(buffer_size);
 
     if (GetUserName(login_name, &buffer_size) == 0)
@@ -799,12 +842,12 @@ char *getLoginName(void)
 #elif defined(PLATFORM_UNIX) && !defined(PLATFORM_ANDROID)
   if (login_name == NULL)
   {
-    struct passwd *pwd;
+    char *name = getUnixLoginName();
 
-    if ((pwd = getpwuid(getuid())) == NULL)
-      login_name = ANONYMOUS_NAME;
+    if (name != NULL)
+      login_name = getStringCopy(name);
     else
-      login_name = getStringCopy(pwd->pw_name);
+      login_name = ANONYMOUS_NAME;
   }
 #else
   login_name = ANONYMOUS_NAME;
@@ -831,10 +874,10 @@ char *getRealName(void)
 #elif defined(PLATFORM_UNIX) && !defined(PLATFORM_ANDROID)
   if (real_name == NULL)
   {
-    struct passwd *pwd;
+    char *name = getUnixRealName();
 
-    if ((pwd = getpwuid(getuid())) != NULL && strlen(pwd->pw_gecos) != 0)
-      real_name = get_corrected_real_name(pwd->pw_gecos);
+    if (name != NULL)
+      real_name = get_corrected_real_name(name);
     else
       real_name = ANONYMOUS_NAME;
   }
@@ -845,6 +888,53 @@ char *getRealName(void)
   return real_name;
 }
 
+char *getFixedUserName(char *name)
+{
+  // needed because player name must be a fixed length string
+  char *name_new = checked_malloc(MAX_PLAYER_NAME_LEN + 1);
+
+  strncpy(name_new, name, MAX_PLAYER_NAME_LEN);
+  name_new[MAX_PLAYER_NAME_LEN] = '\0';
+
+  if (strlen(name) > MAX_PLAYER_NAME_LEN)              // name has been cut
+    if (strchr(name_new, ' '))
+      *strchr(name_new, ' ') = '\0';
+
+  return name_new;
+}
+
+char *getDefaultUserName(int nr)
+{
+  static char *user_name[MAX_PLAYER_NAMES] = { NULL };
+
+  nr = MIN(MAX(0, nr), MAX_PLAYER_NAMES - 1);
+
+  if (user_name[nr] == NULL)
+  {
+    user_name[nr] = (nr == 0 ? getLoginName() : EMPTY_PLAYER_NAME);
+    user_name[nr] = getFixedUserName(user_name[nr]);
+  }
+
+  return user_name[nr];
+}
+
+char *getTimestampFromEpoch(time_t epoch_seconds)
+{
+  struct tm *now = localtime(&epoch_seconds);
+  static char timestamp[20];
+
+  sprintf(timestamp, "%04d%02d%02d-%02d%02d%02d",
+         now->tm_year + 1900, now->tm_mon + 1, now->tm_mday,
+         now->tm_hour, now->tm_min, now->tm_sec);
+
+  return timestamp;
+}
+
+char *getCurrentTimestamp(void)
+{
+  return getTimestampFromEpoch(time(NULL));
+}
+
 time_t getFileTimestampEpochSeconds(char *filename)
 {
   struct stat file_status;
@@ -1088,6 +1178,22 @@ boolean strEqualN(char *s1, char *s2, int n)
          strncmp(s1, s2, n) == 0);
 }
 
+boolean strEqualCase(char *s1, char *s2)
+{
+  return (s1 == NULL && s2 == NULL ? TRUE  :
+         s1 == NULL && s2 != NULL ? FALSE :
+         s1 != NULL && s2 == NULL ? FALSE :
+         strcasecmp(s1, s2) == 0);
+}
+
+boolean strEqualCaseN(char *s1, char *s2, int n)
+{
+  return (s1 == NULL && s2 == NULL ? TRUE  :
+         s1 == NULL && s2 != NULL ? FALSE :
+         s1 != NULL && s2 == NULL ? FALSE :
+         strncasecmp(s1, s2, n) == 0);
+}
+
 boolean strPrefix(char *s, char *prefix)
 {
   return (s == NULL && prefix == NULL ? TRUE  :
@@ -3718,14 +3824,14 @@ void FreeCustomArtworkLists(struct ArtworkListInfo *artwork_info)
 
 char *getLogFilename(char *basename)
 {
-  return getPath2(getUserGameDataDir(), basename);
+  return getPath2(getMainUserGameDataDir(), basename);
 }
 
 void OpenLogFiles(void)
 {
   int i;
 
-  InitUserDataDirectory();
+  InitMainUserDataDirectory();
 
   for (i = 0; i < NUM_LOGS; i++)
   {