From 90da74ef51ddd51924042ee42b5e766908e9980c Mon Sep 17 00:00:00 2001
From: Rich Felker <dalias@aerifal.cx>
Date: Sun, 22 Apr 2012 14:41:54 -0400
Subject: implement getusershell, etc. legacy functions
I actually wrote these a month ago but forgot to integrate them. ugly,
probably-harmful-to-use functions, but some legacy apps want them...
---
src/misc/getusershell.c | 33 +++++++++++++++++++++++++++++++++
1 file changed, 33 insertions(+)
create mode 100644 src/misc/getusershell.c
(limited to 'src/misc')
diff --git a/src/misc/getusershell.c b/src/misc/getusershell.c
new file mode 100644
index 00000000..11e697b6
--- /dev/null
+++ b/src/misc/getusershell.c
@@ -0,0 +1,33 @@
+#define _GNU_SOURCE
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+
+static const char defshells[] = "/bin/sh\n/bin/csh\n";
+
+static char *line;
+size_t linesize;
+static FILE *f;
+
+void endusershell(void)
+{
+ if (f) fclose(f);
+ f = 0;
+}
+
+void setusershell(void)
+{
+ if (!f) f = fopen("/etc/shells", "rb");
+ if (!f) f = fmemopen((void *)defshells, sizeof defshells - 1, "rb");
+}
+
+char *getusershell(void)
+{
+ ssize_t l;
+ if (!f) setusershell();
+ if (!f) return 0;
+ l = getline(&line, &linesize, f);
+ if (l <= 0) return 0;
+ if (line[l-1]=='\n') line[l-1]=0;
+ return line;
+}
--
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