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authorMax Kellermann <max@duempel.org>2008-10-23 09:53:35 +0200
committerMax Kellermann <max@duempel.org>2008-10-23 09:53:35 +0200
commit95ae1d9e9ef259ea8edd3887b9531fb39e1f633e (patch)
treee40be941de168c98496734368a2b3e53e09804ec /src/command.c
parent3958457256e7a594f97e7f4d7f05cabd61da3521 (diff)
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command: added check_unsigned() / check_bool()
Many command arguments must not be negative; add a separate parser/checker function for that. For the same reason, add check_bool(). This eliminates two strange special cases handlers from check_int().
Diffstat (limited to 'src/command.c')
-rw-r--r--src/command.c70
1 files changed, 57 insertions, 13 deletions
diff --git a/src/command.c b/src/command.c
index 51028622e..853c7d798 100644
--- a/src/command.c
+++ b/src/command.c
@@ -79,8 +79,6 @@ static const char need_positive[] = "need a positive integer"; /* no-op */
/* FIXME: redundant error messages */
static const char check_integer[] = "\"%s\" is not a integer";
static const char need_integer[] = "need an integer";
-static const char check_boolean[] = "\"%s\" is not 0 or 1";
-static const char check_non_negative[] = "\"%s\" is not an integer >= 0";
static const char *current_command;
static int command_list_num;
@@ -137,9 +135,7 @@ check_int(struct client *client, int *dst,
char *test;
*dst = strtol(s, &test, 10);
- if (*test != '\0' ||
- (fmt == check_boolean && *dst != 0 && *dst != 1) ||
- (fmt == check_non_negative && *dst < 0)) {
+ if (*test != '\0') {
va_list args;
va_start(args, fmt);
command_error_v(client, ACK_ERROR_ARG, fmt, args);
@@ -149,6 +145,52 @@ check_int(struct client *client, int *dst,
return true;
}
+static bool
+check_unsigned(struct client *client, unsigned *value_r, const char *s)
+{
+ unsigned long value;
+ char *endptr;
+
+ value = strtoul(s, &endptr, 10);
+ if (*endptr != 0) {
+ command_error(client, ACK_ERROR_ARG,
+ "Integer expected: %s", s);
+ return false;
+ }
+
+ if (value > UINT_MAX) {
+ command_error(client, ACK_ERROR_ARG,
+ "Number too large: %s", s);
+ return false;
+ }
+
+ *value_r = (unsigned)value;
+ return true;
+}
+
+static bool
+check_bool(struct client *client, bool *value_r, const char *s)
+{
+ long value;
+ char *endptr;
+
+ value = strtol(s, &endptr, 10);
+ if (*endptr != 0 || value != 0 || value != 1) {
+ command_error(client, ACK_ERROR_ARG,
+ "Boolean (0/1) expected: %s", s);
+ return false;
+ }
+
+ if (value > UINT_MAX) {
+ command_error(client, ACK_ERROR_ARG,
+ "Number too large: %s", s);
+ return false;
+ }
+
+ *value_r = !!value;
+ return true;
+}
+
static enum command_return
print_playlist_result(struct client *client,
enum playlist_result result)
@@ -291,8 +333,8 @@ handle_pause(struct client *client,
int argc, char *argv[])
{
if (argc == 2) {
- int pause_flag;
- if (!check_int(client, &pause_flag, argv[1], check_boolean, argv[1]))
+ bool pause_flag;
+ if (!check_bool(client, &pause_flag, argv[1]))
return COMMAND_RETURN_ERROR;
playerSetPause(pause_flag);
return COMMAND_RETURN_OK;
@@ -1098,9 +1140,9 @@ handle_password(struct client *client, mpd_unused int argc, char *argv[])
static enum command_return
handle_crossfade(struct client *client, mpd_unused int argc, char *argv[])
{
- int xfade_time;
+ unsigned xfade_time;
- if (!check_int(client, &xfade_time, argv[1], check_non_negative, argv[1]))
+ if (!check_unsigned(client, &xfade_time, argv[1]))
return COMMAND_RETURN_ERROR;
setPlayerCrossFade(xfade_time);
@@ -1110,9 +1152,10 @@ handle_crossfade(struct client *client, mpd_unused int argc, char *argv[])
static enum command_return
handle_enableoutput(struct client *client, mpd_unused int argc, char *argv[])
{
- int device, ret;
+ unsigned device;
+ int ret;
- if (!check_int(client, &device, argv[1], check_non_negative, argv[1]))
+ if (!check_unsigned(client, &device, argv[1]))
return COMMAND_RETURN_ERROR;
ret = enableAudioDevice(device);
@@ -1126,9 +1169,10 @@ handle_enableoutput(struct client *client, mpd_unused int argc, char *argv[])
static enum command_return
handle_disableoutput(struct client *client, mpd_unused int argc, char *argv[])
{
- int device, ret;
+ unsigned device;
+ int ret;
- if (!check_int(client, &device, argv[1], check_non_negative, argv[1]))
+ if (!check_unsigned(client, &device, argv[1]))
return COMMAND_RETURN_ERROR;
ret = disableAudioDevice(device);