wpa_supplicant: Initial Revision 0.8.X
Based on:
commit 0725cc7b7efc434910e89865c42eda7ce61bbf08
Author: Jouni Malinen <j@w1.fi>
Date: Thu Apr 21 20:41:01 2011 +0300
Enable CONFIG_DRIVER_NL80211=y in the default configuration
nl80211 should be preferred over WEXT with any recent Linux
kernel version.
Change-Id: I26aec5afbbd4f4a1f5fd900912545b6f5050de64
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
diff --git a/src/utils/os_internal.c b/src/utils/os_internal.c
new file mode 100644
index 0000000..5260e23
--- /dev/null
+++ b/src/utils/os_internal.c
@@ -0,0 +1,471 @@
+/*
+ * wpa_supplicant/hostapd / Internal implementation of OS specific functions
+ * Copyright (c) 2005-2006, Jouni Malinen <j@w1.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.
+ *
+ * This file is an example of operating system specific wrapper functions.
+ * This version implements many of the functions internally, so it can be used
+ * to fill in missing functions from the target system C libraries.
+ *
+ * Some of the functions are using standard C library calls in order to keep
+ * this file in working condition to allow the functions to be tested on a
+ * Linux target. Please note that OS_NO_C_LIB_DEFINES needs to be defined for
+ * this file to work correctly. Note that these implementations are only
+ * examples and are not optimized for speed.
+ */
+
+#include "includes.h"
+
+#undef OS_REJECT_C_LIB_FUNCTIONS
+#include "os.h"
+
+void os_sleep(os_time_t sec, os_time_t usec)
+{
+ if (sec)
+ sleep(sec);
+ if (usec)
+ usleep(usec);
+}
+
+
+int os_get_time(struct os_time *t)
+{
+ int res;
+ struct timeval tv;
+ res = gettimeofday(&tv, NULL);
+ t->sec = tv.tv_sec;
+ t->usec = tv.tv_usec;
+ return res;
+}
+
+
+int os_mktime(int year, int month, int day, int hour, int min, int sec,
+ os_time_t *t)
+{
+ struct tm tm;
+
+ if (year < 1970 || month < 1 || month > 12 || day < 1 || day > 31 ||
+ hour < 0 || hour > 23 || min < 0 || min > 59 || sec < 0 ||
+ sec > 60)
+ return -1;
+
+ os_memset(&tm, 0, sizeof(tm));
+ tm.tm_year = year - 1900;
+ tm.tm_mon = month - 1;
+ tm.tm_mday = day;
+ tm.tm_hour = hour;
+ tm.tm_min = min;
+ tm.tm_sec = sec;
+
+ *t = (os_time_t) mktime(&tm);
+ return 0;
+}
+
+
+int os_daemonize(const char *pid_file)
+{
+ if (daemon(0, 0)) {
+ perror("daemon");
+ return -1;
+ }
+
+ if (pid_file) {
+ FILE *f = fopen(pid_file, "w");
+ if (f) {
+ fprintf(f, "%u\n", getpid());
+ fclose(f);
+ }
+ }
+
+ return -0;
+}
+
+
+void os_daemonize_terminate(const char *pid_file)
+{
+ if (pid_file)
+ unlink(pid_file);
+}
+
+
+int os_get_random(unsigned char *buf, size_t len)
+{
+ FILE *f;
+ size_t rc;
+
+ f = fopen("/dev/urandom", "rb");
+ 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;
+}
+
+
+unsigned long os_random(void)
+{
+ return random();
+}
+
+
+char * os_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 os_strdup(rel_path);
+
+ for (;;) {
+ buf = os_malloc(len);
+ if (buf == NULL)
+ return NULL;
+ cwd = getcwd(buf, len);
+ if (cwd == NULL) {
+ os_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 = os_malloc(ret_len);
+ if (ret) {
+ os_memcpy(ret, cwd, cwd_len);
+ ret[cwd_len] = '/';
+ os_memcpy(ret + cwd_len + 1, rel_path, rel_len);
+ ret[ret_len - 1] = '\0';
+ }
+ os_free(buf);
+ return ret;
+}
+
+
+int os_program_init(void)
+{
+ return 0;
+}
+
+
+void os_program_deinit(void)
+{
+}
+
+
+int os_setenv(const char *name, const char *value, int overwrite)
+{
+ return setenv(name, value, overwrite);
+}
+
+
+int os_unsetenv(const char *name)
+{
+#if defined(__FreeBSD__) || defined(__NetBSD__)
+ unsetenv(name);
+ return 0;
+#else
+ return unsetenv(name);
+#endif
+}
+
+
+char * os_readfile(const char *name, size_t *len)
+{
+ FILE *f;
+ char *buf;
+
+ f = fopen(name, "rb");
+ if (f == NULL)
+ return NULL;
+
+ fseek(f, 0, SEEK_END);
+ *len = ftell(f);
+ fseek(f, 0, SEEK_SET);
+
+ buf = os_malloc(*len);
+ if (buf == NULL) {
+ fclose(f);
+ return NULL;
+ }
+
+ if (fread(buf, 1, *len, f) != *len) {
+ fclose(f);
+ os_free(buf);
+ return NULL;
+ }
+
+ fclose(f);
+
+ return buf;
+}
+
+
+void * os_zalloc(size_t size)
+{
+ void *n = os_malloc(size);
+ if (n)
+ os_memset(n, 0, size);
+ return n;
+}
+
+
+void * os_malloc(size_t size)
+{
+ return malloc(size);
+}
+
+
+void * os_realloc(void *ptr, size_t size)
+{
+ return realloc(ptr, size);
+}
+
+
+void os_free(void *ptr)
+{
+ free(ptr);
+}
+
+
+void * os_memcpy(void *dest, const void *src, size_t n)
+{
+ char *d = dest;
+ const char *s = src;
+ while (n--)
+ *d++ = *s++;
+ return dest;
+}
+
+
+void * os_memmove(void *dest, const void *src, size_t n)
+{
+ if (dest < src)
+ os_memcpy(dest, src, n);
+ else {
+ /* overlapping areas */
+ char *d = (char *) dest + n;
+ const char *s = (const char *) src + n;
+ while (n--)
+ *--d = *--s;
+ }
+ return dest;
+}
+
+
+void * os_memset(void *s, int c, size_t n)
+{
+ char *p = s;
+ while (n--)
+ *p++ = c;
+ return s;
+}
+
+
+int os_memcmp(const void *s1, const void *s2, size_t n)
+{
+ const unsigned char *p1 = s1, *p2 = s2;
+
+ if (n == 0)
+ return 0;
+
+ while (*p1 == *p2) {
+ p1++;
+ p2++;
+ n--;
+ if (n == 0)
+ return 0;
+ }
+
+ return *p1 - *p2;
+}
+
+
+char * os_strdup(const char *s)
+{
+ char *res;
+ size_t len;
+ if (s == NULL)
+ return NULL;
+ len = os_strlen(s);
+ res = os_malloc(len + 1);
+ if (res)
+ os_memcpy(res, s, len + 1);
+ return res;
+}
+
+
+size_t os_strlen(const char *s)
+{
+ const char *p = s;
+ while (*p)
+ p++;
+ return p - s;
+}
+
+
+int os_strcasecmp(const char *s1, const char *s2)
+{
+ /*
+ * Ignoring case is not required for main functionality, so just use
+ * the case sensitive version of the function.
+ */
+ return os_strcmp(s1, s2);
+}
+
+
+int os_strncasecmp(const char *s1, const char *s2, size_t n)
+{
+ /*
+ * Ignoring case is not required for main functionality, so just use
+ * the case sensitive version of the function.
+ */
+ return os_strncmp(s1, s2, n);
+}
+
+
+char * os_strchr(const char *s, int c)
+{
+ while (*s) {
+ if (*s == c)
+ return (char *) s;
+ s++;
+ }
+ return NULL;
+}
+
+
+char * os_strrchr(const char *s, int c)
+{
+ const char *p = s;
+ while (*p)
+ p++;
+ p--;
+ while (p >= s) {
+ if (*p == c)
+ return (char *) p;
+ p--;
+ }
+ return NULL;
+}
+
+
+int os_strcmp(const char *s1, const char *s2)
+{
+ while (*s1 == *s2) {
+ if (*s1 == '\0')
+ break;
+ s1++;
+ s2++;
+ }
+
+ return *s1 - *s2;
+}
+
+
+int os_strncmp(const char *s1, const char *s2, size_t n)
+{
+ if (n == 0)
+ return 0;
+
+ while (*s1 == *s2) {
+ if (*s1 == '\0')
+ break;
+ s1++;
+ s2++;
+ n--;
+ if (n == 0)
+ return 0;
+ }
+
+ return *s1 - *s2;
+}
+
+
+char * os_strncpy(char *dest, const char *src, size_t n)
+{
+ char *d = dest;
+
+ while (n--) {
+ *d = *src;
+ if (*src == '\0')
+ break;
+ d++;
+ src++;
+ }
+
+ return dest;
+}
+
+
+size_t os_strlcpy(char *dest, const char *src, size_t siz)
+{
+ const char *s = src;
+ size_t left = siz;
+
+ if (left) {
+ /* Copy string up to the maximum size of the dest buffer */
+ while (--left != 0) {
+ if ((*dest++ = *s++) == '\0')
+ break;
+ }
+ }
+
+ if (left == 0) {
+ /* Not enough room for the string; force NUL-termination */
+ if (siz != 0)
+ *dest = '\0';
+ while (*s++)
+ ; /* determine total src string length */
+ }
+
+ return s - src - 1;
+}
+
+
+char * os_strstr(const char *haystack, const char *needle)
+{
+ size_t len = os_strlen(needle);
+ while (*haystack) {
+ if (os_strncmp(haystack, needle, len) == 0)
+ return (char *) haystack;
+ haystack++;
+ }
+
+ return NULL;
+}
+
+
+int os_snprintf(char *str, size_t size, const char *format, ...)
+{
+ va_list ap;
+ int ret;
+
+ /* See http://www.ijs.si/software/snprintf/ for portable
+ * implementation of snprintf.
+ */
+
+ va_start(ap, format);
+ ret = vsnprintf(str, size, format, ap);
+ va_end(ap);
+ if (size > 0)
+ str[size - 1] = '\0';
+ return ret;
+}