[anonymous] about:config was available in anonymous mode

Display available memory from /proc/meminfo.

src/bfu/leds.c

@@ -64,6 +64,7 @@ enum led_option {
 	LEDS_CLOCK_ALIAS,
 
 	LEDS_SHOW_IP_ENABLE,
+	LEDS_SHOW_MEM_ENABLE,
 
 	LEDS_TEMPERATURE_TREE,
 	LEDS_TEMPERATURE_ENABLE,
@@ -96,6 +97,10 @@ static union option_info led_options[] = {
 		"show_ip", OPT_ZERO, 0,
 		N_("Whether to display IP of the document in the status bar.")),
 
+	INIT_OPT_BOOL("ui", N_("Show available memory"),
+		"show_mem", OPT_ZERO, 0,
+		N_("Whether to display available memory. From /proc/meminfo.")),
+
 	INIT_OPT_TREE("ui", N_("Temperature"),
 		"temperature", OPT_ZERO, N_("Temperature of CPU.")),
 
@@ -125,6 +130,7 @@ static union option_info led_options[] = {
 #define get_leds_clock_format()		get_opt_leds(LEDS_CLOCK_FORMAT).string
 #define get_leds_panel_enable()		get_opt_leds(LEDS_PANEL_ENABLE).number
 #define get_leds_show_ip_enable()	get_opt_leds(LEDS_SHOW_IP_ENABLE).number
+#define get_leds_show_mem_enable()	get_opt_leds(LEDS_SHOW_MEM_ENABLE).number
 #define get_leds_temperature_enable()	get_opt_leds(LEDS_TEMPERATURE_ENABLE).number
 #define get_leds_temperature_filename()		get_opt_leds(LEDS_TEMPERATURE_FILENAME).string
 
@@ -209,6 +215,58 @@ draw_show_ip(struct session *ses, int xpos, int ypos, struct color_pair *color)
 	return 0;
 }
 
+static int
+draw_show_mem(struct session *ses, int xpos, int ypos, struct color_pair *color)
+{
+	struct terminal *term = ses->tab->term;
+	FILE *f;
+	struct string text;
+	int i;
+	int length;
+	char *pos;
+	size_t ret = 0;
+
+	f = fopen("/proc/meminfo", "r");
+
+	if (!f) {
+		return 0;
+	}
+
+	while (!feof(f)) {
+		char buffer[128];
+
+		if (!fgets(buffer, 127, f)) {
+			break;
+		}
+		if (strncmp(buffer, "MemAvailable:", sizeof("MemAvailable:")-1)) {
+			continue;
+		}
+		if (sscanf(buffer, "MemAvailable:%ld", &ret) < 1) {
+			ret = 0;
+			break;
+		} else {
+			break;
+		}
+	}
+	fclose(f);
+
+	if (ret < 1) {
+		return 0;
+	}
+
+	if (!init_string(&text)) {
+		return 0;
+	}
+	add_format_to_string(&text, "[%ld MiB]", ret / 1024);
+	length = text.length;
+	for (i = 0, pos = text.source; i < length; i++) {
+		draw_char(term, xpos - length + i, ypos, pos[i], 0, color);
+	}
+	done_string(&text);
+
+	return length;
+}
+
 static int
 draw_temperature(struct session *ses, int xpos, int ypos, struct color_pair *color)
 {
@@ -332,6 +390,12 @@ draw_leds(struct session *ses)
 		if (color) term->leds_length += draw_temperature(ses, xpos - term->leds_length, ypos, color);
 	}
 
+	if (get_leds_show_mem_enable()) {
+		struct color_pair *color = get_bfu_color(term, "status.showmem-text");
+
+		if (color) term->leds_length += draw_show_mem(ses, xpos - term->leds_length, ypos, color);
+	}
+
 	if (get_leds_show_ip_enable()) {
 		struct color_pair *color = get_bfu_color(term, "status.showip-text");
 

src/config/options.inc

@@ -1356,6 +1356,10 @@ static union option_info config_options_info[] = {
 		"showip-text", "black", "white", "black", "white",
 		N_("Status bar show ip text colors.")),
 
+	INIT_OPT_COLORS(".status", N_("Status bar show available memory"),
+		"showmem-text", "black", "white", "black", "white",
+		N_("Status bar show available memory text colors.")),
+
 	INIT_OPT_COLORS(".status", N_("Generic status bar"),
 		"status-bar", "black", "white", "black", "white",
 		N_("Generic status bar colors.")),

src/protocol/about.c

@@ -8,6 +8,7 @@
 
 #include "cache/cache.h"
 #include "config/conf.h"
+#include "config/options.h"
 #include "network/connection.h"
 #include "protocol/about.h"
 #include "protocol/protocol.h"
@@ -97,7 +98,7 @@ about_protocol_handler(struct connection *conn)
 	if (cached && !cached->content_type) {
 #ifndef CONFIG_SMALL
 		{
-			if (!strncmp(conn->uri->data, "config", 6)) {
+			if (!strncmp(conn->uri->data, "config", 6) && !get_cmd_opt_bool("anonymous")) {
 				char *str;
 
 				if (conn->referrer && conn->referrer->protocol == PROTOCOL_ABOUT) {