Stripped down import of wpa_supplicant v0.3.8

1 files changed, 335 insertions, 0 deletions

diff --git a/contrib/wpa_supplicant/common.c b/contrib/wpa_supplicant/common.c
new file mode 100644
index 0000000..071ffe8
--- /dev/null
+++ b/contrib/wpa_supplicant/common.c
@@ -0,0 +1,335 @@
+/*
+ * Host AP (software wireless LAN access point) user space daemon for
+ * Host AP kernel driver / common helper functions, etc.
+ * Copyright (c) 2002-2005, Jouni Malinen <jkmaline@cc.hut.fi>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Alternatively, this software may be distributed under the terms of BSD
+ * license.
+ *
+ * See README and COPYING for more details.
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <errno.h>
+#include <stdarg.h>
+#include <ctype.h>
+#include <time.h>
+#include <sys/time.h>
+
+#include "common.h"
+
+
+int wpa_debug_level = MSG_INFO;
+int wpa_debug_show_keys = 0;
+int wpa_debug_timestamp = 0;
+
+
+int hostapd_get_rand(u8 *buf, size_t len)
+{
+#ifdef CONFIG_NATIVE_WINDOWS
+	int i;
+	/* FIX: use more secure pseudo random number generator */
+	for (i = 0; i < len; i++) {
+		buf[i] = rand();
+	}
+	return 0;
+#else /* CONFIG_NATIVE_WINDOWS */
+	FILE *f;
+	size_t rc;
+
+	f = fopen("/dev/urandom", "r");
+	if (f == NULL) {
+		printf("Could not open /dev/urandom.\n");
+		return -1;
+	}
+
+	rc = fread(buf, 1, len, f);
+	fclose(f);
+
+	return rc != len ? -1 : 0;
+#endif /* CONFIG_NATIVE_WINDOWS */
+}
+
+
+void hostapd_hexdump(const char *title, const u8 *buf, size_t len)
+{
+	size_t i;
+	printf("%s - hexdump(len=%lu):", title, (unsigned long) len);
+	for (i = 0; i < len; i++)
+		printf(" %02x", buf[i]);
+	printf("\n");
+}
+
+
+static int hex2num(char c)
+{
+	if (c >= '0' && c <= '9')
+		return c - '0';
+	if (c >= 'a' && c <= 'f')
+		return c - 'a' + 10;
+	if (c >= 'A' && c <= 'F')
+		return c - 'A' + 10;
+	return -1;
+}
+
+
+static int hex2byte(const char *hex)
+{
+	int a, b;
+	a = hex2num(*hex++);
+	if (a < 0)
+		return -1;
+	b = hex2num(*hex++);
+	if (b < 0)
+		return -1;
+	return (a << 4) | b;
+}
+
+
+int hwaddr_aton(const char *txt, u8 *addr)
+{
+	int i;
+
+	for (i = 0; i < 6; i++) {
+		int a, b;
+
+		a = hex2num(*txt++);
+		if (a < 0)
+			return -1;
+		b = hex2num(*txt++);
+		if (b < 0)
+			return -1;
+		*addr++ = (a << 4) | b;
+		if (i < 5 && *txt++ != ':')
+			return -1;
+	}
+
+	return 0;
+}
+
+
+int hexstr2bin(const char *hex, u8 *buf, size_t len)
+{
+	int i, a;
+	const char *ipos = hex;
+	u8 *opos = buf;
+
+	for (i = 0; i < len; i++) {
+		a = hex2byte(ipos);
+		if (a < 0)
+			return -1;
+		*opos++ = a;
+		ipos += 2;
+	}
+	return 0;
+}
+
+
+char * rel2abs_path(const char *rel_path)
+{
+	char *buf = NULL, *cwd, *ret;
+	size_t len = 128, cwd_len, rel_len, ret_len;
+
+	if (rel_path[0] == '/')
+		return strdup(rel_path);
+
+	for (;;) {
+		buf = malloc(len);
+		if (buf == NULL)
+			return NULL;
+		cwd = getcwd(buf, len);
+		if (cwd == NULL) {
+			free(buf);
+			if (errno != ERANGE) {
+				return NULL;
+			}
+			len *= 2;
+		} else {
+			break;
+		}
+	}
+
+	cwd_len = strlen(cwd);
+	rel_len = strlen(rel_path);
+	ret_len = cwd_len + 1 + rel_len + 1;
+	ret = malloc(ret_len);
+	if (ret) {
+		memcpy(ret, cwd, cwd_len);
+		ret[cwd_len] = '/';
+		memcpy(ret + cwd_len + 1, rel_path, rel_len);
+		ret[ret_len - 1] = '\0';
+	}
+	free(buf);
+	return ret;
+}
+
+
+void inc_byte_array(u8 *counter, size_t len)
+{
+	int pos = len - 1;
+	while (pos >= 0) {
+		counter[pos]++;
+		if (counter[pos] != 0)
+			break;
+		pos--;
+	}
+}
+
+
+void print_char(char c)
+{
+	if (c >= 32 && c < 127)
+		printf("%c", c);
+	else
+		printf("<%02x>", c);
+}
+
+
+void fprint_char(FILE *f, char c)
+{
+	if (c >= 32 && c < 127)
+		fprintf(f, "%c", c);
+	else
+		fprintf(f, "<%02x>", c);
+}
+
+
+static void wpa_debug_print_timestamp(void)
+{
+	struct timeval tv;
+	char buf[16];
+
+	if (!wpa_debug_timestamp)
+		return;
+
+	gettimeofday(&tv, NULL);
+	if (strftime(buf, sizeof(buf), "%b %d %H:%M:%S",
+		     localtime((const time_t *) &tv.tv_sec)) <= 0) {
+		snprintf(buf, sizeof(buf), "%u", (int) tv.tv_sec);
+	}
+	printf("%s.%06u: ", buf, (unsigned int) tv.tv_usec);
+}
+
+
+void wpa_printf(int level, char *fmt, ...)
+{
+	va_list ap;
+
+	va_start(ap, fmt);
+	if (level >= wpa_debug_level) {
+		wpa_debug_print_timestamp();
+		vprintf(fmt, ap);
+		printf("\n");
+	}
+	va_end(ap);
+}
+
+
+static void _wpa_hexdump(int level, const char *title, const u8 *buf,
+			 size_t len, int show)
+{
+	size_t i;
+	if (level < wpa_debug_level)
+		return;
+	wpa_debug_print_timestamp();
+	printf("%s - hexdump(len=%lu):", title, (unsigned long) len);
+	if (show) {
+		for (i = 0; i < len; i++)
+			printf(" %02x", buf[i]);
+	} else {
+		printf(" [REMOVED]");
+	}
+	printf("\n");
+}
+
+void wpa_hexdump(int level, const char *title, const u8 *buf, size_t len)
+{
+	_wpa_hexdump(level, title, buf, len, 1);
+}
+
+
+void wpa_hexdump_key(int level, const char *title, const u8 *buf, size_t len)
+{
+	_wpa_hexdump(level, title, buf, len, wpa_debug_show_keys);
+}
+
+
+static void _wpa_hexdump_ascii(int level, const char *title, const u8 *buf,
+			       size_t len, int show)
+{
+	int i, llen;
+	const u8 *pos = buf;
+	const int line_len = 16;
+
+	if (level < wpa_debug_level)
+		return;
+	wpa_debug_print_timestamp();
+	if (!show) {
+		printf("%s - hexdump_ascii(len=%lu): [REMOVED]\n",
+		       title, (unsigned long) len);
+		return;
+	}
+	printf("%s - hexdump_ascii(len=%lu):\n", title, (unsigned long) len);
+	while (len) {
+		llen = len > line_len ? line_len : len;
+		printf("    ");
+		for (i = 0; i < llen; i++)
+			printf(" %02x", pos[i]);
+		for (i = llen; i < line_len; i++)
+			printf("   ");
+		printf("   ");
+		for (i = 0; i < llen; i++) {
+			if (isprint(pos[i]))
+				printf("%c", pos[i]);
+			else
+				printf("_");
+		}
+		for (i = llen; i < line_len; i++)
+			printf(" ");
+		printf("\n");
+		pos += llen;
+		len -= llen;
+	}
+}
+
+
+void wpa_hexdump_ascii(int level, const char *title, const u8 *buf, size_t len)
+{
+	_wpa_hexdump_ascii(level, title, buf, len, 1);
+}
+
+
+void wpa_hexdump_ascii_key(int level, const char *title, const u8 *buf,
+			   size_t len)
+{
+	_wpa_hexdump_ascii(level, title, buf, len, wpa_debug_show_keys);
+}
+
+
+#ifdef CONFIG_NATIVE_WINDOWS
+
+#define EPOCHFILETIME (116444736000000000ULL)
+
+int gettimeofday(struct timeval *tv, struct timezone *tz)
+{
+	FILETIME ft;
+	LARGE_INTEGER li;
+	ULONGLONG t;
+
+	GetSystemTimeAsFileTime(&ft);
+	li.LowPart = ft.dwLowDateTime;
+	li.HighPart = ft.dwHighDateTime;
+	t = (li.QuadPart - EPOCHFILETIME) / 10;
+	tv->tv_sec = (long) (t / 1000000);
+	tv->tv_usec = (long) (t % 1000000);
+
+	return 0;
+}
+#endif /* CONFIG_NATIVE_WINDOWS */