* Generates a status line for use with wmii or other minimal window managers
*
*
- * Copyright (c) 2008 Michael Stapelberg and contributors
+ * Copyright (c) 2008-2009 Michael Stapelberg and contributors
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
#include <arpa/inet.h>
#include <glob.h>
#include <dirent.h>
+#include <getopt.h>
+#include <linux/ethtool.h>
+#include <linux/sockios.h>
+
+#define _IS_WMIISTATUS_C
#include "wmiistatus.h"
+#undef _IS_WMIISTATUS_C
#include "config.h"
+/* socket file descriptor for general purposes */
+static int general_socket;
+
+/*
+ * This function just concats two strings in place, it should only be used
+ * for concatting order to the name of a file or concatting color codes.
+ * Otherwise, the buffer size would have to be increased.
+ *
+ */
+static char *concat(const char *str1, const char *str2) {
+ static char concatbuf[32];
+ (void)snprintf(concatbuf, sizeof(concatbuf), "%s%s", str1, str2);
+ return concatbuf;
+}
+
+/*
+ * Cleans wmii's /rbar directory by deleting all regular files
+ *
+ */
static void cleanup_rbar_dir() {
struct dirent *ent;
DIR *dir;
char pathbuf[strlen(wmii_path)+256+1];
if ((dir = opendir(wmii_path)) == NULL)
- exit(-3);
+ exit(EXIT_FAILURE);
while ((ent = readdir(dir)) != NULL) {
if (ent->d_type == DT_REG) {
- sprintf(pathbuf, "%s%s", wmii_path, ent->d_name);
- unlink(pathbuf);
+ (void)snprintf(pathbuf, sizeof(pathbuf), "%s%s", wmii_path, ent->d_name);
+ if (unlink(pathbuf) == -1)
+ exit(EXIT_FAILURE);
}
}
- closedir(dir);
+ (void)closedir(dir);
}
+/*
+ * Creates the specified file in wmii's /rbar directory with
+ * correct modes and initializes colors if colormode is enabled
+ *
+ */
static void create_file(const char *name) {
char pathbuf[strlen(wmii_path)+256+1];
+ int fd;
+ int flags = O_CREAT | O_WRONLY;
+ struct stat statbuf;
- sprintf(pathbuf, "%s%s", wmii_path, name);
- int fd = creat(pathbuf, S_IRUSR | S_IWUSR);
- if (fd < 0)
- exit(-4);
- close(fd);
+ (void)snprintf(pathbuf, sizeof(pathbuf), "%s%s", wmii_path, name);
+
+ /* Overwrite file's contents if it exists */
+ if (stat(pathbuf, &statbuf) >= 0)
+ flags |= O_TRUNC;
+
+ if ((fd = open(pathbuf, flags, S_IRUSR | S_IWUSR)) < 0)
+ exit(EXIT_FAILURE);
+ if (use_colors) {
+ char *tmp = concat("#888888 ", wmii_normcolors);
+ if (write(fd, tmp, strlen(tmp)) != (ssize_t)strlen(tmp))
+ exit(EXIT_FAILURE);
+ }
+ (void)close(fd);
}
+/*
+ * Waits until wmii_path/rbar exists (= the filesystem gets mounted),
+ * cleans up all files and creates the needed files
+ *
+ */
+static void setup(void) {
+ unsigned int i;
+ struct stat statbuf;
+ char pathbuf[512];
+
+ /* Wait until wmii_path/rbar exists */
+ for (; stat(wmii_path, &statbuf) < 0; sleep(interval));
+
+ cleanup_rbar_dir();
+ if (wlan_interface)
+ create_file(concat(order[ORDER_WLAN],"wlan"));
+ if (eth_interface)
+ create_file(concat(order[ORDER_ETH],"eth"));
+ if (battery_path)
+ create_file(concat(order[ORDER_BATTERY],"battery"));
+ create_file(concat(order[ORDER_LOAD],"load"));
+ if (time_format)
+ create_file(concat(order[ORDER_TIME],"time"));
+ for (i = 0; i < num_run_watches; i += 2) {
+ snprintf(pathbuf, sizeof(pathbuf), "%s%s", order[ORDER_RUN], run_watches[i]);
+ create_file(pathbuf);
+ }
+}
+
+/*
+ * Writes the given message in the corresponding file in wmii's /rbar directory
+ *
+ */
static void write_to_statusbar(const char *name, const char *message) {
char pathbuf[strlen(wmii_path)+256+1];
+ int fd;
- sprintf(pathbuf, "%s%s", wmii_path, name);
- int fd = open(pathbuf, O_RDWR);
- if (fd == -1)
- exit(-2);
- write(fd, message, strlen(message));
- close(fd);
+ (void)snprintf(pathbuf, sizeof(pathbuf), "%s%s", wmii_path, name);
+ if ((fd = open(pathbuf, O_RDWR)) == -1) {
+ /* Try to re-setup stuff and just continue */
+ setup();
+ return;
+ }
+ if (write(fd, message, strlen(message)) != (ssize_t)strlen(message))
+ exit(EXIT_FAILURE);
+ (void)close(fd);
}
+/*
+ * Writes an errormessage to statusbar
+ *
+ */
static void write_error_to_statusbar(const char *message) {
cleanup_rbar_dir();
+ create_file("error");
write_to_statusbar("error", message);
}
* Write errormessage to statusbar and exit
*
*/
-static void die(const char *fmt, ...) {
- char buffer[512];
- va_list ap;
- va_start(ap, fmt);
- vsprintf(buffer, fmt, ap);
- va_end(ap);
-
- write_error_to_statusbar(buffer);
- exit(-1);
+void die(const char *fmt, ...) {
+ if (wmii_path != NULL) {
+ char buffer[512];
+ va_list ap;
+ va_start(ap, fmt);
+ (void)vsnprintf(buffer, sizeof(buffer), fmt, ap);
+ va_end(ap);
+
+ write_error_to_statusbar(buffer);
+ }
+ exit(EXIT_FAILURE);
}
+/*
+ * Skip the given character for exactly 'amount' times, returns
+ * a pointer to the first non-'character' character in 'input'.
+ *
+ */
static char *skip_character(char *input, char character, int amount) {
char *walk;
- int len = strlen(input),
- blanks = 0;
+ size_t len = strlen(input);
+ int blanks = 0;
- for (walk = input; ((walk - input) < len) && (blanks < amount); walk++)
+ for (walk = input; ((size_t)(walk - input) < len) && (blanks < amount); walk++)
if (*walk == character)
blanks++;
}
/*
- * Get battery information from /sys. Note that it uses the design capacity to calculate the percentage,
- * not the full capacity.
+ * Get battery information from /sys. Note that it uses the design capacity to
+ * calculate the percentage, not the last full capacity, so you can see how
+ * worn off your battery is.
*
*/
static char *get_battery_info() {
char buf[1024];
static char part[512];
- char *walk, *last = buf;
- int fd = open(battery, O_RDONLY);
- if (fd == -1)
- die("Could not open %s", battery);
+ char *walk, *last;
+ int fd;
int full_design = -1,
remaining = -1,
present_rate = -1;
charging_status_t status = CS_DISCHARGING;
- memset(part, '\0', sizeof(part));
- read(fd, buf, sizeof(buf));
- for (walk = buf; (walk-buf) < 1024; walk++)
+
+ if ((fd = open(battery_path, O_RDONLY)) == -1)
+ return "No battery found";
+
+ memset(part, 0, sizeof(part));
+ (void)read(fd, buf, sizeof(buf));
+ for (walk = buf, last = buf; (walk-buf) < 1024; walk++)
if (*walk == '=') {
- if (BEGINS_WITH(last, "POWER_SUPPLY_ENERGY_FULL_DESIGN"))
+ if (BEGINS_WITH(last, "POWER_SUPPLY_ENERGY_FULL_DESIGN") ||
+ BEGINS_WITH(last, "POWER_SUPPLY_CHARGE_FULL_DESIGN"))
full_design = atoi(walk+1);
- else if (BEGINS_WITH(last, "POWER_SUPPLY_ENERGY_NOW"))
+ else if (BEGINS_WITH(last, "POWER_SUPPLY_ENERGY_NOW") ||
+ BEGINS_WITH(last, "POWER_SUPPLY_CHARGE_NOW"))
remaining = atoi(walk+1);
else if (BEGINS_WITH(last, "POWER_SUPPLY_CURRENT_NOW"))
present_rate = atoi(walk+1);
status = CS_FULL;
} else if (*walk == '\n')
last = walk+1;
- close(fd);
+ (void)close(fd);
if ((full_design != -1) && (remaining != -1) && (present_rate != -1)) {
- float remaining_time, perc;
+ float remaining_time;
+ int seconds, hours, minutes;
if (status == CS_CHARGING)
remaining_time = ((float)full_design - (float)remaining) / (float)present_rate;
else if (status == CS_DISCHARGING)
remaining_time = ((float)remaining / (float)present_rate);
- else {
- snprintf(part, sizeof(part), "FULL");
- return part;
- }
- perc = ((float)remaining / (float)full_design);
+ else remaining_time = 0;
- int seconds = (int)(remaining_time * 3600.0);
- int hours = seconds / 3600;
+ seconds = (int)(remaining_time * 3600.0);
+ hours = seconds / 3600;
seconds -= (hours * 3600);
- int minutes = seconds / 60;
+ minutes = seconds / 60;
seconds -= (minutes * 60);
- sprintf(part, "%s %.02f%% %02d:%02d:%02d", (status == CS_CHARGING? "CHR" : "BAT"),
- (perc * 100), hours, minutes, seconds);
+ (void)snprintf(part, sizeof(part), "%s %.02f%% %02d:%02d:%02d",
+ (status == CS_CHARGING ? "CHR" :
+ (status == CS_DISCHARGING ? "BAT" : "FULL")),
+ (((float)remaining / (float)full_design) * 100),
+ hours, minutes, seconds);
}
return part;
}
/*
- * Just parses /proc/net/wireless
+ * Just parses /proc/net/wireless looking for lines beginning with
+ * wlan_interface, extracting the quality of the link and adding the
+ * current IP address of wlan_interface.
*
*/
static char *get_wireless_info() {
char buf[1024];
static char part[512];
char *interfaces;
- memset(buf, '\0', sizeof(buf));
- memset(part, '\0', sizeof(part));
+ int fd;
+ memset(buf, 0, sizeof(buf));
+ memset(part, 0, sizeof(part));
- int fd = open("/proc/net/wireless", O_RDONLY);
- if (fd == -1)
+ if ((fd = open("/proc/net/wireless", O_RDONLY)) == -1)
die("Could not open /proc/net/wireless");
- read(fd, buf, sizeof(buf));
- close(fd);
+ (void)read(fd, buf, sizeof(buf));
+ (void)close(fd);
- interfaces = skip_character(buf, '\n', 2) + 1;
- while (interfaces < buf+strlen(buf)) {
+ interfaces = skip_character(buf, '\n', 1) + 1;
+ while ((interfaces = skip_character(interfaces, '\n', 1)+1) < buf+strlen(buf)) {
while (isspace((int)*interfaces))
interfaces++;
- if (strncmp(interfaces, wlan_interface, strlen(wlan_interface)) == 0) {
- /* Skip status field (0000) */
- interfaces += strlen(wlan_interface) + 2;
- interfaces = skip_character(interfaces, ' ', 1);
- while (isspace((int)*interfaces))
- interfaces++;
- int quality = atoi(interfaces);
- /* For some reason, I get 255 sometimes */
- if ((quality == 255) || (quality == 0))
- snprintf(part, sizeof(part), "W: down");
- else {
- snprintf(part, sizeof(part), "W: (%02d%%) ", quality);
- char *ip_address = get_ip_address(wlan_interface);
- strcpy(part+strlen(part), ip_address);
- }
-
- return part;
- }
- interfaces = skip_character(interfaces, '\n', 1) + 1;
+ if (!BEGINS_WITH(interfaces, wlan_interface))
+ continue;
+ int quality;
+ if (sscanf(interfaces, "%*[^:]: 0000 %d", &quality) != 1)
+ continue;
+ if ((quality == UCHAR_MAX) || (quality == 0)) {
+ if (use_colors)
+ (void)snprintf(part, sizeof(part), "%s%s",
+ concat("#FF0000 ", wmii_normcolors), " W: down");
+ else (void)snprintf(part, sizeof(part), "W: down");
+ } else (void)snprintf(part, sizeof(part), "W: (%03d%%) %s",
+ quality, get_ip_address(wlan_interface));
+ return part;
}
return part;
}
-static char *get_ip_address(const char *interface) {
+/*
+ * Return the IP address for the given interface or "no IP" if the
+ * interface is up and running but hasn't got an IP address yet
+ *
+ */
+static const char *get_ip_address(const char *interface) {
static char part[512];
struct ifreq ifr;
- memset(part, '\0', sizeof(part));
-
- int fd = socket(AF_INET, SOCK_DGRAM, 0);
+ struct sockaddr_in addr;
+ socklen_t len = sizeof(struct sockaddr_in);
+ memset(part, 0, sizeof(part));
- strcpy(ifr.ifr_name, interface);
- if (ioctl(fd, SIOCGIFFLAGS, &ifr) < 0)
- die("Could not get interface flags (SIOCGIFFLAGS)");
-
- if (!(ifr.ifr_flags & IFF_UP) ||
- !(ifr.ifr_flags & IFF_RUNNING)) {
- close(fd);
+ (void)strcpy(ifr.ifr_name, interface);
+ ifr.ifr_addr.sa_family = AF_INET;
+ if (ioctl(general_socket, SIOCGIFADDR, &ifr) < 0)
return NULL;
- }
- strcpy(ifr.ifr_name, interface);
- ifr.ifr_addr.sa_family = AF_INET;
- if (ioctl(fd, SIOCGIFADDR, &ifr) == 0) {
- struct sockaddr_in addr;
- memcpy(&addr, &ifr.ifr_addr, sizeof(struct sockaddr_in));
- inet_ntop(AF_INET, &addr.sin_addr.s_addr, part, sizeof(struct sockaddr_in));
- if (strlen(part) == 0)
- sprintf(part, "no IP");
- }
+ memcpy(&addr, &ifr.ifr_addr, len);
+ (void)inet_ntop(AF_INET, &addr.sin_addr.s_addr, part, len);
+ if (strlen(part) == 0)
+ (void)snprintf(part, sizeof(part), "no IP");
- close(fd);
return part;
}
+/*
+ * Combines ethernet IP addresses and speed (if requested) for displaying
+ *
+ */
static char *get_eth_info() {
static char part[512];
- char *ip_address = get_ip_address(eth_interface);
+ const char *ip_address = get_ip_address(eth_interface);
+ int ethspeed = 0;
+
+ if (get_ethspeed) {
+ /* This code path requires root privileges */
+ struct ifreq ifr;
+ struct ethtool_cmd ecmd;
+
+ ecmd.cmd = ETHTOOL_GSET;
+ (void)memset(&ifr, 0, sizeof(ifr));
+ ifr.ifr_data = (caddr_t)&ecmd;
+ (void)strcpy(ifr.ifr_name, eth_interface);
+ if (ioctl(general_socket, SIOCETHTOOL, &ifr) == 0)
+ ethspeed = (ecmd.speed == USHRT_MAX ? 0 : ecmd.speed);
+ else get_ethspeed = false;
+ }
if (ip_address == NULL)
- snprintf(part, sizeof(part), "E: down");
- else snprintf(part, sizeof(part), "E: %s", ip_address);
+ (void)snprintf(part, sizeof(part), "E: down");
+ else {
+ if (get_ethspeed)
+ (void)snprintf(part, sizeof(part), "E: %s (%d Mbit/s)", ip_address, ethspeed);
+ else (void)snprintf(part, sizeof(part), "E: %s", ip_address);
+ }
return part;
}
*/
static bool process_runs(const char *path) {
char pidbuf[512],
- procbuf[512],
- *walk;
- int n;
+ procbuf[512];
static glob_t globbuf;
struct stat statbuf;
+ int fd;
+ memset(pidbuf, 0, sizeof(pidbuf));
if (glob(path, GLOB_NOCHECK | GLOB_TILDE, NULL, &globbuf) < 0)
die("glob() failed");
- const char *real_path = (globbuf.gl_pathc > 0 ? globbuf.gl_pathv[0] : path);
- int fd = open(real_path, O_RDONLY);
+ fd = open((globbuf.gl_pathc > 0 ? globbuf.gl_pathv[0] : path), O_RDONLY);
globfree(&globbuf);
if (fd < 0)
return false;
- n = read(fd, pidbuf, sizeof(pidbuf));
- if (n > 0)
- pidbuf[n] = '\0';
- close(fd);
- for (walk = pidbuf; *walk != '\0'; walk++)
- if (!isdigit((int)(*walk))) {
- *walk = '\0';
- break;
- }
- sprintf(procbuf, "/proc/%s", pidbuf);
+ (void)read(fd, pidbuf, sizeof(pidbuf));
+ (void)close(fd);
+
+ (void)snprintf(procbuf, sizeof(procbuf), "/proc/%ld", strtol(pidbuf, NULL, 10));
return (stat(procbuf, &statbuf) >= 0);
}
-int main(void) {
+int main(int argc, char *argv[]) {
char part[512],
pathbuf[512],
*end;
unsigned int i;
+ int load_avg;
- cleanup_rbar_dir();
- create_file(ORDER_WLAN "wlan");
- create_file(ORDER_ETH "eth");
- create_file(ORDER_BATTERY "battery");
- create_file(ORDER_LOAD "load");
- create_file(ORDER_TIME "time");
- for (i = 0; i < sizeof(run_watches) / sizeof(char*); i += 2) {
- sprintf(pathbuf, "%s%s", ORDER_RUN, run_watches[i]);
- create_file(pathbuf);
- }
+ char *configfile = PREFIX "/etc/wmiistatus.conf";
+ int o, option_index = 0;
+ struct option long_options[] = {
+ {"config", required_argument, 0, 'c'},
+ {0, 0, 0, 0}
+ };
+
+ while ((o = getopt_long(argc, argv, "c:", long_options, &option_index)) != -1)
+ if ((char)o == 'c')
+ configfile = optarg;
+
+ if (load_configuration(configfile) < 0)
+ return EXIT_FAILURE;
+
+ setup();
+
+ if ((general_socket = socket(AF_INET, SOCK_DGRAM, 0)) == -1)
+ die("Could not create socket");
while (1) {
- for (i = 0; i < sizeof(run_watches) / sizeof(char*); i += 2) {
- sprintf(part, "%s: %s", run_watches[i], (process_runs(run_watches[i+1]) ? "yes" : "no"));
- sprintf(pathbuf, "%s%s", ORDER_RUN, run_watches[i]);
+ for (i = 0; i < num_run_watches; i += 2) {
+ bool running = process_runs(run_watches[i+1]);
+ if (use_colors)
+ snprintf(part, sizeof(part), "%s %s: %s",
+ (running ?
+ concat("#00FF00 ", wmii_normcolors) :
+ concat("#FF0000 ", wmii_normcolors)),
+ run_watches[i],
+ (running ? "yes" : "no"));
+ else snprintf(part, sizeof(part), "%s: %s", run_watches[i], (running ? "yes" : "no"));
+ snprintf(pathbuf, sizeof(pathbuf), "%s%s", order[ORDER_RUN], run_watches[i]);
write_to_statusbar(pathbuf, part);
}
- write_to_statusbar(ORDER_WLAN "wlan", get_wireless_info());
- write_to_statusbar(ORDER_ETH "eth", get_eth_info());
- write_to_statusbar(ORDER_BATTERY "battery", get_battery_info());
+ if (wlan_interface)
+ write_to_statusbar(concat(order[ORDER_WLAN], "wlan"), get_wireless_info());
+ if (eth_interface)
+ write_to_statusbar(concat(order[ORDER_ETH], "eth"), get_eth_info());
+ if (battery_path)
+ write_to_statusbar(concat(order[ORDER_BATTERY], "battery"), get_battery_info());
/* Get load */
- int load_avg = open("/proc/loadavg", O_RDONLY);
- if (load_avg == -1)
+ if ((load_avg = open("/proc/loadavg", O_RDONLY)) == -1)
die("Could not open /proc/loadavg");
- read(load_avg, part, sizeof(part));
- close(load_avg);
+ (void)read(load_avg, part, sizeof(part));
+ (void)close(load_avg);
end = skip_character(part, ' ', 3);
*end = '\0';
- write_to_statusbar(ORDER_LOAD "load", part);
-
- /* Get date & time */
- time_t current_time = time(NULL);
- struct tm *current_tm = localtime(¤t_time);
- strftime(part, sizeof(part), time_format, current_tm);
- write_to_statusbar(ORDER_TIME "time", part);
+ write_to_statusbar(concat(order[ORDER_LOAD], "load"), part);
+
+ if (time_format) {
+ /* Get date & time */
+ time_t current_time = time(NULL);
+ struct tm *current_tm = localtime(¤t_time);
+ (void)strftime(part, sizeof(part), time_format, current_tm);
+ write_to_statusbar(concat(order[ORDER_TIME], "time"), part);
+ }
- sleep(1);
+ sleep(interval);
}
}
projects / i3 / i3status / blobdiff