1 files changed, 43 insertions, 0 deletions
diff --git a/througha.c b/througha.c
new file mode 100644
index 0000000..f12793c
--- /dev/null
+++ b/througha.c
@@ -0,0 +1,43 @@
+#include <ctype.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <unistd.h>
+
+
+void usage(const char *name, const char *message)
+{
+    fprintf(
+        stderr,
+        "usage: %1$s proxy command [arg [arg [...]]]\n"
+        "  the proxy parameter may be set to '-' so no proxy will be used\n"
+        "%1$s: %2$s\n",
+        name, message
+    );
+    exit(1);
+}
+
+int main(int argc, char **argv, char **env)
+{
+    if (argc < 2)
+        usage(argv[0], "no proxy was specified");
+    else if (argc < 3)
+        usage(argv[0], "no command was specified");
+
+    for (char **envp = env; *envp != NULL; ++envp)
+    {
+        *strchr(*envp, '=') = '\0';
+
+        for (char *cp = *envp; *cp != '\0'; ++cp)
+            *cp = tolower(*cp);
+
+        if (strstr(*envp, "_proxy"))
+            unsetenv(*envp);
+    }
+
+    if (strcmp(argv[1], "-"))
+        setenv("all_proxy", argv[1], 1);
+
+    return execvp(argv[2], &argv[2]);
+}