X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=hostname-setup.c;h=71a3f75bd98fed18872dbb552fd1f0992e0613ff;hp=4d7f32d0a79b562432d46619e2df06b6d6ba3ba0;hb=75db651adba49238a02fe031842155d30e7a8219;hpb=ea6145dabe707ae721d036c6764c34a493cff401

diff --git a/hostname-setup.c b/hostname-setup.c
index 4d7f32d0a..71a3f75bd 100644
--- a/hostname-setup.c
+++ b/hostname-setup.c
@@ -40,11 +40,29 @@
 #define FILENAME "/etc/hostname"
 #elif defined(TARGET_ARCH)
 #define FILENAME "/etc/rc.conf"
+#elif defined(TARGET_GENTOO)
+#define FILENAME "/etc/conf.d/hostname"
 #endif
 
+static char* strip_bad_chars(char *s) {
+        char *p, *d;
+
+        for (p = s, d = s; *p; p++)
+                if ((*p >= 'a' && *p <= 'z') ||
+                    (*p >= 'A' && *p <= 'Z') ||
+                    (*p >= '0' && *p <= '9') ||
+                    *p == '-' ||
+                    *p == '_')
+                        *(d++) = *p;
+
+        *d = 0;
+
+        return s;
+}
+
 static int read_hostname(char **hn) {
 
-#if defined(TARGET_FEDORA) || defined(TARGET_ARCH)
+#if defined(TARGET_FEDORA) || defined(TARGET_ARCH) || defined(TARGET_GENTOO)
         int r;
         FILE *f;
 
@@ -67,7 +85,7 @@ static int read_hostname(char **hn) {
 
                 s = strstrip(line);
 
-                if (!startswith(s, "HOSTNAME="))
+                if (!startswith_no_case(s, "HOSTNAME="))
                         continue;
 
                 if (!(k = strdup(s+9))) {
@@ -75,6 +93,14 @@ static int read_hostname(char **hn) {
                         goto finish;
                 }
 
+                strip_bad_chars(k);
+
+                if (k[0] == 0) {
+                        free(k);
+                        r = -ENOENT;
+                        goto finish;
+                }
+
                 *hn = k;
                 break;
         }
@@ -100,6 +126,13 @@ finish:
         if (!k)
                 return -ENOMEM;
 
+        strip_bad_chars(k);
+
+        if (k[0] == 0) {
+                free(k);
+                return -ENOENT;
+        }
+
         *hn = k;
 
 #else