static char * wpa_config_parse_string(const char *value, size_t *len)
{
if (*value == '"') {
const char *pos;
char *str;
value++;
pos = os_strrchr(value, '"');
if (pos == NULL || pos[1] != '\0')
return NULL;
*len = pos - value;
str = os_malloc(*len + 1);
if (str == NULL)
return NULL;
os_memcpy(str, value, *len);
str[*len] = '\0';
return str;
} else {
u8 *str;
size_t tlen, hlen = os_strlen(value);
if (hlen & 1)
return NULL;
tlen = hlen / 2;
str = os_malloc(tlen + 1);
if (str == NULL)
return NULL;
if (hexstr2bin(value, str, tlen)) {
os_free(str);
return NULL;
}
str[tlen] = '\0';
*len = tlen;
return (char *) str;
}
}
/**
* wpa_config_get_line - Read the next configuration file line
* @s: Buffer for the line
* @size: The buffer length
* @stream: File stream to read from
* @line: Pointer to a variable storing the file line number
* @_pos: Buffer for the pointer to the beginning of data on the text line or
* %NULL if not needed (returned value used instead)
* Returns: Pointer to the beginning of data on the text line or %NULL if no
* more text lines are available.
*
* This function reads the next non-empty line from the configuration file and
* removes comments. The returned string is guaranteed to be null-terminated.
*/
static char * wpa_config_get_line(char *s, int size, FILE *stream, int *line,
char **_pos)
{
char *pos, *end, *sstart;
while (fgets(s, size, stream)) {
(*line)++;
s[size - 1] = '\0';
if (!newline_terminated(s, size)) {
/*
* The line was truncated - skip rest of it to avoid
* confusing error messages.
*/
wpa_printf(MSG_INFO, "Long line in configuration file "
"truncated");
skip_line_end(stream);
}
pos = s;
/* Skip white space from the beginning of line. */
while (*pos == ' ' || *pos == '\t' || *pos == '\r')
pos++;
/* Skip comment lines and empty lines */
if (*pos == '#' || *pos == '\n' || *pos == '\0')
continue;
/*
* Remove # comments unless they are within a double quoted
* string.
*/
sstart = os_strchr(pos, '"');
if (sstart)
sstart = os_strrchr(sstart + 1, '"');
if (!sstart)
sstart = pos;
end = os_strchr(sstart, '#');
if (end)
*end-- = '\0';
else
end = pos + os_strlen(pos) - 1;
/* Remove trailing white space. */
while (end > pos &&
(*end == '\n' || *end == ' ' || *end == '\t' ||
*end == '\r'))
*end-- = '\0';
if (*pos == '\0')
continue;
if (_pos)
*_pos = pos;
return pos;
}
if (_pos)
*_pos = NULL;
return NULL;
}
static int tokenize_cmd(char *cmd, char *argv[])
{
char *pos;
int argc = 0;
pos = cmd;
for (;;) {
while (*pos == ' ')
pos++;
if (*pos == '\0')
break;
argv[argc] = pos;
argc++;
if (argc == max_args)
break;
if (*pos == '"') {
char *pos2 = os_strrchr(pos, '"');
if (pos2)
pos = pos2 + 1;
}
while (*pos != '\0' && *pos != ' ')
pos++;
if (*pos == ' ')
*pos++ = '\0';
}
return argc;
}
int linux_br_get(char *brname, const char *ifname)
{
char path[128], brlink[128], *pos;
os_snprintf(path, sizeof(path), "/sys/class/net/%s/brport/bridge",
ifname);
os_memset(brlink, 0, sizeof(brlink));
#if 0
if (readlink(path, brlink, sizeof(brlink) - 1) < 0)
return -1;
#else
{ /*Coverity check - STRING_NULL*/
int len;
len = readlink(path, brlink, sizeof(brlink) - 1);
if (len < 0 || len >= (int) sizeof(brlink)) {
return -1;
}
brlink[len] = '\0';
}
#endif
pos = os_strrchr(brlink, '/');
if (pos == NULL)
return -1;
pos++;
os_strlcpy(brname, pos, IFNAMSIZ);
return 0;
}
/**
* wpa_config_get_line - Read the next configuration file line
* @s: Buffer for the line
* @size: The buffer length
* @stream: File stream to read from
* @line: Pointer to a variable storing the file line number
* @_pos: Buffer for the pointer to the beginning of data on the text line or
* %NULL if not needed (returned value used instead)
* Returns: Pointer to the beginning of data on the text line or %NULL if no
* more text lines are available.
*
* This function reads the next non-empty line from the configuration file and
* removes comments. The returned string is guaranteed to be null-terminated.
*/
static char * wpa_config_get_line(char *s, int size, FILE *stream, int *line,
char **_pos)
{
char *pos, *end, *sstart;
while (fgets(s, size, stream)) {
(*line)++;
/* Trim trailing whitespace */
pos = s+strlen(s);
while (pos > s && !isgraph(pos[-1])) *--pos = '\0';
if (pos == s || s[0] == '#')
continue;
pos = s;
/* Skip white space from the beginning of line. */
while (*pos == ' ' || *pos == '\t')
pos++;
/* Skip comment lines and empty lines */
if (*pos == '#' || *pos == '\n' || *pos == '\r' || *pos == '\0')
continue;
/*
* Remove # comments unless they are within a double quoted
* string.
*/
sstart = os_strchr(pos, '"');
if (sstart)
sstart = os_strrchr(sstart + 1, '"');
if (!sstart)
sstart = pos;
end = os_strchr(sstart, '#');
if (end)
*end-- = '\0';
else
end = pos + os_strlen(pos) - 1;
/* Remove trailing white space. */
while (end > pos &&
(*end == '\n' || *end == ' ' || *end == '\t' ||
*end == '\r'))
*end-- = '\0';
if (*pos == '\0')
continue;
if (_pos)
*_pos = pos;
return pos;
}
if (_pos)
*_pos = NULL;
return NULL;
}
static int wpa_config_parse_psk(const struct parse_data *data,
struct wpa_ssid *ssid, int line,
const char *value)
{
if (*value == '"') {
#ifndef CONFIG_NO_PBKDF2
const char *pos;
size_t len;
value++;
pos = os_strrchr(value, '"');
if (pos)
len = pos - value;
else
len = os_strlen(value);
if (len < 8 || len > 63) {
wpa_printf(MSG_ERROR, "Line %d: Invalid passphrase "
"length %lu (expected: 8..63) '%s'.",
line, (unsigned long) len, value);
return -1;
}
wpa_hexdump_ascii_key(MSG_MSGDUMP, "PSK (ASCII passphrase)",
(u8 *) value, len);
if (ssid->passphrase && os_strlen(ssid->passphrase) == len &&
os_memcmp(ssid->passphrase, value, len) == 0)
return 0;
ssid->psk_set = 0;
os_free(ssid->passphrase);
ssid->passphrase = os_malloc(len + 1);
if (ssid->passphrase == NULL)
return -1;
os_memcpy(ssid->passphrase, value, len);
ssid->passphrase[len] = '\0';
return 0;
#else /* CONFIG_NO_PBKDF2 */
wpa_printf(MSG_ERROR, "Line %d: ASCII passphrase not "
"supported.", line);
return -1;
#endif /* CONFIG_NO_PBKDF2 */
}
if (hexstr2bin(value, ssid->psk, PMK_LEN) ||
value[PMK_LEN * 2] != '\0') {
wpa_printf(MSG_ERROR, "Line %d: Invalid PSK '%s'.",
line, value);
return -1;
}
os_free(ssid->passphrase);
ssid->passphrase = NULL;
ssid->psk_set = 1;
wpa_hexdump_key(MSG_MSGDUMP, "PSK", ssid->psk, PMK_LEN);
return 0;
}
int linux_br_get(char *brname, const char *ifname)
{
char path[128], brlink[128], *pos;
os_snprintf(path, sizeof(path), "/sys/class/net/%s/brport/bridge",
ifname);
os_memset(brlink, 0, sizeof(brlink));
if (readlink(path, brlink, sizeof(brlink) - 1) < 0)
return -1;
pos = os_strrchr(brlink, '/');
if (pos == NULL)
return -1;
pos++;
os_strlcpy(brname, pos, IFNAMSIZ);
return 0;
}
char * http_link_update(char *url, const char *base)
{
char *n;
size_t len;
const char *pos;
/* RFC 2396, Chapter 5.2 */
/* TODO: consider adding all cases described in RFC 2396 */
if (url == NULL)
return NULL;
if (os_strncmp(url, "http://", 7) == 0)
return url; /* absolute link */
if (os_strncmp(base, "http://", 7) != 0)
return url; /* unable to handle base URL */
len = os_strlen(url) + 1 + os_strlen(base) + 1;
n = os_malloc(len);
if (n == NULL)
return url; /* failed */
if (url[0] == '/') {
pos = os_strchr(base + 7, '/');
if (pos == NULL) {
os_snprintf(n, len, "%s%s", base, url);
} else {
os_memcpy(n, base, pos - base);
os_memcpy(n + (pos - base), url, os_strlen(url) + 1);
}
} else {
pos = os_strrchr(base + 7, '/');
if (pos == NULL) {
os_snprintf(n, len, "%s/%s", base, url);
} else {
os_memcpy(n, base, pos - base + 1);
os_memcpy(n + (pos - base) + 1, url, os_strlen(url) +
1);
}
}
os_free(url);
return n;
}
static int hostapd_get_global_ctrl_iface(struct hapd_interfaces *interfaces,
const char *path)
{
char *pos;
os_free(interfaces->global_iface_path);
interfaces->global_iface_path = os_strdup(path);
if (interfaces->global_iface_path == NULL)
return -1;
pos = os_strrchr(interfaces->global_iface_path, '/');
if (pos == NULL) {
os_free(interfaces->global_iface_path);
interfaces->global_iface_path = NULL;
return -1;
}
*pos = '\0';
interfaces->global_iface_name = pos + 1;
return 0;
}
static void wpa_trace_bfd_addr(void *pc)
{
bfd *abfd = cached_abfd;
struct bfd_data data;
const char *name;
char *aname = NULL;
const char *filename;
if (abfd == NULL)
return;
data.pc = (bfd_vma) pc;
data.found = FALSE;
bfd_map_over_sections(abfd, find_addr_sect, &data);
if (!data.found)
return;
do {
if (data.function)
aname = bfd_demangle(abfd, data.function,
DMGL_ANSI | DMGL_PARAMS);
name = aname ? aname : data.function;
filename = data.filename;
if (filename) {
char *end = os_strrchr(filename, '/');
int i = 0;
while (*filename && *filename == prg_fname[i] &&
filename <= end) {
filename++;
i++;
}
}
wpa_printf(MSG_INFO, " %s() %s:%u",
name, filename, data.line);
free(aname);
data.found = bfd_find_inliner_info(abfd, &data.filename,
&data.function, &data.line);
} while (data.found);
}
int linux_br_get(char *brname, const char *ifname)
{
char path[128], brlink[128], *pos;
ssize_t res;
if (!ovs_br_get(brname, ifname))
return 0;
os_snprintf(path, sizeof(path), "/sys/class/net/%s/brport/bridge",
ifname);
res = readlink(path, brlink, sizeof(brlink));
if (res < 0 || (size_t) res >= sizeof(brlink))
return -1;
brlink[res] = '\0';
pos = os_strrchr(brlink, '/');
if (pos == NULL)
return -1;
pos++;
os_strlcpy(brname, pos, IFNAMSIZ);
return 0;
}
static int hostapd_get_global_ctrl_iface(struct hapd_interfaces *interfaces,
const char *path)
{
char *pos;
os_free(interfaces->global_iface_path);
interfaces->global_iface_path = os_strdup(path);
if (interfaces->global_iface_path == NULL)
return -1;
pos = os_strrchr(interfaces->global_iface_path, '/');
if (pos == NULL) {
wpa_printf(MSG_ERROR, "No '/' in the global control interface "
"file");
os_free(interfaces->global_iface_path);
interfaces->global_iface_path = NULL;
return -1;
}
*pos = '\0';
interfaces->global_iface_name = pos + 1;
return 0;
}
static void wpa_cli_interactive(void)
{
#define max_args 10
char cmdbuf[256], *cmd, *argv[max_args], *pos;
int argc;
#ifdef CONFIG_READLINE
char *home, *hfile = NULL;
#endif /* CONFIG_READLINE */
printf("\nInteractive mode\n\n");
#ifdef CONFIG_READLINE
rl_attempted_completion_function = wpa_cli_completion;
home = getenv("HOME");
if (home) {
const char *fname = ".wpa_cli_history";
int hfile_len = os_strlen(home) + 1 + os_strlen(fname) + 1;
hfile = os_malloc(hfile_len);
if (hfile) {
os_snprintf(hfile, hfile_len, "%s/%s", home, fname);
hfile[hfile_len - 1] = '\0';
read_history(hfile);
stifle_history(100);
}
}
#endif /* CONFIG_READLINE */
do {
wpa_cli_recv_pending(monitor_conn, 0, 0);
#ifndef CONFIG_NATIVE_WINDOWS
alarm(1);
#endif /* CONFIG_NATIVE_WINDOWS */
#ifdef CONFIG_READLINE
cmd = readline("> ");
if (cmd && *cmd) {
HIST_ENTRY *h;
while (next_history())
;
h = previous_history();
if (h == NULL || os_strcmp(cmd, h->line) != 0)
add_history(cmd);
next_history();
}
#else /* CONFIG_READLINE */
printf("> ");
cmd = fgets(cmdbuf, sizeof(cmdbuf), stdin);
#endif /* CONFIG_READLINE */
#ifndef CONFIG_NATIVE_WINDOWS
alarm(0);
#endif /* CONFIG_NATIVE_WINDOWS */
if (cmd == NULL)
break;
wpa_cli_recv_pending(monitor_conn, 0, 0);
pos = cmd;
while (*pos != '\0') {
if (*pos == '\n') {
*pos = '\0';
break;
}
pos++;
}
argc = 0;
pos = cmd;
for (;;) {
while (*pos == ' ')
pos++;
if (*pos == '\0')
break;
argv[argc] = pos;
argc++;
if (argc == max_args)
break;
if (*pos == '"') {
char *pos2 = os_strrchr(pos, '"');
if (pos2)
pos = pos2 + 1;
}
while (*pos != '\0' && *pos != ' ')
pos++;
if (*pos == ' ')
*pos++ = '\0';
}
if (argc)
wpa_request(ctrl_conn, argc, argv);
if (cmd != cmdbuf)
os_free(cmd);
} while (!wpa_cli_quit);
#ifdef CONFIG_READLINE
if (hfile) {
/* Save command history, excluding lines that may contain
* passwords. */
HIST_ENTRY *h;
history_set_pos(0);
h = next_history();
while (h) {
char *p = h->line;
while (*p == ' ' || *p == '\t')
p++;
if (os_strncasecmp(p, "pa", 2) == 0 ||
os_strncasecmp(p, "o", 1) == 0 ||
os_strncasecmp(p, "n", 1)) {
h = remove_history(where_history());
if (h) {
os_free(h->line);
os_free(h->data);
os_free(h);
}
h = current_history();
} else {
h = next_history();
}
}
write_history(hfile);
os_free(hfile);
}
#endif /* CONFIG_READLINE */
}
static void wpa_cli_reconnect(void)
{
wpa_cli_close_connection();
ctrl_conn = wpa_cli_open_connection(ctrl_ifname);
if (ctrl_conn) {
printf("Connection to wpa_supplicant re-established\n");
#ifdef ANDROID
if (wpa_ctrl_attach(monitor_conn) == 0) {
#else
if (wpa_ctrl_attach(ctrl_conn) == 0) {
#endif
wpa_cli_attached = 1;
} else {
printf("Warning: Failed to attach to "
"wpa_supplicant.\n");
}
}
}
static void wpa_cli_recv_pending(struct wpa_ctrl *ctrl, int in_read,
int action_monitor)
{
int first = 1;
#ifdef ANDROID
if (ctrl == NULL) {
#else
if (ctrl_conn == NULL) {
#endif
wpa_cli_reconnect();
return;
}
while (wpa_ctrl_pending(ctrl) > 0) {
char buf[256];
size_t len = sizeof(buf) - 1;
if (wpa_ctrl_recv(ctrl, buf, &len) == 0) {
buf[len] = '\0';
if (action_monitor)
wpa_cli_action_process(buf);
else {
if (in_read && first)
printf("\n");
first = 0;
printf("%s\n", buf);
}
} else {
printf("Could not read pending message.\n");
break;
}
}
if (wpa_ctrl_pending(ctrl) < 0) {
printf("Connection to wpa_supplicant lost - trying to "
"reconnect\n");
wpa_cli_reconnect();
}
}
#ifdef CONFIG_READLINE
static char * wpa_cli_cmd_gen(const char *text, int state)
{
static int i, len;
const char *cmd;
if (state == 0) {
i = 0;
len = os_strlen(text);
}
while ((cmd = wpa_cli_commands[i].cmd)) {
i++;
if (os_strncasecmp(cmd, text, len) == 0)
return os_strdup(cmd);
}
return NULL;
}
static char * wpa_cli_dummy_gen(const char *text, int state)
{
return NULL;
}
static char ** wpa_cli_completion(const char *text, int start, int end)
{
return rl_completion_matches(text, start == 0 ?
wpa_cli_cmd_gen : wpa_cli_dummy_gen);
}
#endif /* CONFIG_READLINE */
static void wpa_cli_interactive(void)
{
#define max_args 10
char cmdbuf[256], *cmd, *argv[max_args], *pos;
int argc;
#ifdef CONFIG_READLINE
char *home, *hfile = NULL;
#endif /* CONFIG_READLINE */
printf("\nInteractive mode\n\n");
#ifdef CONFIG_READLINE
rl_attempted_completion_function = wpa_cli_completion;
home = getenv("HOME");
if (home) {
const char *fname = ".wpa_cli_history";
int hfile_len = os_strlen(home) + 1 + os_strlen(fname) + 1;
hfile = os_malloc(hfile_len);
if (hfile) {
int res;
res = os_snprintf(hfile, hfile_len, "%s/%s", home,
fname);
if (res >= 0 && res < hfile_len) {
hfile[hfile_len - 1] = '\0';
read_history(hfile);
stifle_history(100);
}
}
}
#endif /* CONFIG_READLINE */
do {
#ifdef ANDROID
wpa_cli_recv_pending(monitor_conn, 0, 0);
#else
wpa_cli_recv_pending(ctrl_conn, 0, 0);
#endif
#ifndef CONFIG_NATIVE_WINDOWS
alarm(ping_interval);
#endif /* CONFIG_NATIVE_WINDOWS */
#ifdef CONFIG_READLINE
cmd = readline("> ");
if (cmd && *cmd) {
HIST_ENTRY *h;
while (next_history())
;
h = previous_history();
if (h == NULL || os_strcmp(cmd, h->line) != 0)
add_history(cmd);
next_history();
}
#else /* CONFIG_READLINE */
printf("> ");
cmd = fgets(cmdbuf, sizeof(cmdbuf), stdin);
#endif /* CONFIG_READLINE */
#ifndef CONFIG_NATIVE_WINDOWS
alarm(0);
#endif /* CONFIG_NATIVE_WINDOWS */
if (cmd == NULL)
break;
#ifdef ANDROID
wpa_cli_recv_pending(monitor_conn, 0, 0);
#else
wpa_cli_recv_pending(ctrl_conn, 0, 0);
#endif
pos = cmd;
while (*pos != '\0') {
if (*pos == '\n') {
*pos = '\0';
break;
}
pos++;
}
argc = 0;
pos = cmd;
for (;;) {
while (*pos == ' ')
pos++;
if (*pos == '\0')
break;
argv[argc] = pos;
argc++;
if (argc == max_args)
break;
if (*pos == '"') {
char *pos2 = os_strrchr(pos, '"');
if (pos2)
pos = pos2 + 1;
}
while (*pos != '\0' && *pos != ' ')
pos++;
if (*pos == ' ')
*pos++ = '\0';
}
if (argc)
wpa_request(ctrl_conn, argc, argv);
if (cmd != cmdbuf)
os_free(cmd);
} while (!wpa_cli_quit);
#ifdef CONFIG_READLINE
if (hfile) {
/* Save command history, excluding lines that may contain
* passwords. */
HIST_ENTRY *h;
history_set_pos(0);
while ((h = current_history())) {
char *p = h->line;
while (*p == ' ' || *p == '\t')
p++;
if (cmd_has_sensitive_data(p)) {
h = remove_history(where_history());
if (h) {
os_free(h->line);
os_free(h->data);
os_free(h);
} else
next_history();
} else
next_history();
}
write_history(hfile);
os_free(hfile);
}
#endif /* CONFIG_READLINE */
}
