hostname: read hostname for Gentoo

hostname-setup.c

@@ -40,11 +40,13 @@
 #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 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 +69,7 @@ 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 +77,11 @@ static int read_hostname(char **hn) {
                         goto finish;
                 }
 
+                if (!(k = delete_chars(k, "\"\'"))) {
+                        r = -ENOMEM;
+                        goto finish;
+                }
+
                 *hn = k;
                 break;
         }

util.c

@@ -42,6 +42,7 @@
 #include <sys/inotify.h>
 #include <sys/poll.h>
 #include <libgen.h>
+#include <ctype.h>
 
 #include "macro.h"
 #include "util.h"
@@ -141,6 +142,30 @@ bool startswith(const char *s, const char *prefix) {
         return memcmp(s, prefix, pl) == 0;
 }
 
+bool startswith_no_case(const char *s, const char *prefix) {
+        size_t sl, pl;
+        unsigned i;
+
+        assert(s);
+        assert(prefix);
+
+        sl = strlen(s);
+        pl = strlen(prefix);
+
+        if (pl == 0)
+                return true;
+
+        if (sl < pl)
+                return false;
+
+        for(i = 0; i < pl; ++i) {
+                if (tolower(s[i]) != tolower(prefix[i]))
+                        return false;
+        }
+
+        return true;
+}
+
 bool first_word(const char *s, const char *word) {
         size_t sl, wl;
 

util.h

@@ -89,6 +89,7 @@ static inline bool is_path_absolute(const char *p) {
 
 bool endswith(const char *s, const char *postfix);
 bool startswith(const char *s, const char *prefix);
+bool startswith_no_case(const char *s, const char *prefix);
 
 bool first_word(const char *s, const char *word);