#include <stdio.h>
#include <time.h>
#include <stdbool.h>
+#include <stdarg.h>
#include <unistd.h>
#include <stdlib.h>
#include <ctype.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
+#include <glob.h>
+#include <dirent.h>
+#include <getopt.h>
+#include <linux/ethtool.h>
+#include <linux/sockios.h>
-const char *wlan_interface = "wlan0";
-const char *eth_interface = "eth0";
-// TODO: run-watches, z.B.
-// "/var/run/dhcp*.pid" --> checkt ob's das file gibt, ob der prozess läuft und zeigt dann yes/no an
-// "/var/run/vpnc*.pid"
+#define _IS_WMIISTATUS_C
+#include "wmiistatus.h"
+#undef _IS_WMIISTATUS_C
+#include "config.h"
-char output[512];
-bool first_push = true;
+/*
+ * 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(EXIT_FAILURE);
+
+ while ((ent = readdir(dir)) != NULL) {
+ if (ent->d_type == DT_REG) {
+ (void)snprintf(pathbuf, sizeof(pathbuf), "%s%s", wmii_path, ent->d_name);
+ if (unlink(pathbuf) == -1)
+ exit(EXIT_FAILURE);
+ }
+ }
+
+ (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;
+
+ (void)snprintf(pathbuf, sizeof(pathbuf), "%s%s", wmii_path, name);
+ if ((fd = open(pathbuf, O_CREAT | O_WRONLY | O_TRUNC, 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);
+}
+
+/*
+ * 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;
+
+ (void)snprintf(pathbuf, sizeof(pathbuf), "%s%s", wmii_path, name);
+ if ((fd = open(pathbuf, O_RDWR)) == -1)
+ exit(EXIT_FAILURE);
+ 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
+ *
+ */
+void die(const char *fmt, ...) {
+ 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);
+}
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++;
return (walk == input ? walk : walk-1);
}
-static void push_part(const char *input, const int n) {
- if (first_push)
- first_push = false;
- else
- strncpy(output+strlen(output), " | ", strlen(" | "));
- strncpy(output+strlen(output), input, n);
-}
-
/*
* Get battery information from /sys. Note that it uses the design capacity to calculate the percentage,
* not the full capacity.
*/
static char *get_battery_info() {
char buf[1024];
- static char output[512];
- char *walk, *last = buf;
- int fd = open("/sys/class/power_supply/BAT0/uevent", O_RDONLY);
+ static char part[512];
+ char *walk, *last;
+ int fd;
int full_design = -1,
remaining = -1,
present_rate = -1;
- bool charging = false;
- memset(output, '\0', sizeof(output));
- read(fd, buf, sizeof(buf));
- /* TODO: charged */
- for (walk = buf; (walk-buf) < 1024; walk++)
+ charging_status_t status = CS_DISCHARGING;
+
+ if ((fd = open(battery_path, O_RDONLY)) == -1)
+ die("Could not open %s", battery_path);
+
+ memset(part, 0, sizeof(part));
+ (void)read(fd, buf, sizeof(buf));
+ for (walk = buf, last = buf; (walk-buf) < 1024; walk++)
if (*walk == '=') {
- if (strncmp(last, "POWER_SUPPLY_ENERGY_FULL_DESIGN", strlen("POWER_SUPPLY_ENERGY_FULL_DESIGN")) == 0)
+ if (BEGINS_WITH(last, "POWER_SUPPLY_ENERGY_FULL_DESIGN"))
full_design = atoi(walk+1);
- else if (strncmp(last, "POWER_SUPPLY_ENERGY_NOW", strlen("POWER_SUPPLY_ENERGY_NOW")) == 0)
+ else if (BEGINS_WITH(last, "POWER_SUPPLY_ENERGY_NOW"))
remaining = atoi(walk+1);
- else if (strncmp(last, "POWER_SUPPLY_CURRENT_NOW", strlen("POWER_SUPPLY_CURRENT_NOW")) == 0)
+ else if (BEGINS_WITH(last, "POWER_SUPPLY_CURRENT_NOW"))
present_rate = atoi(walk+1);
- else if (strncmp(last, "POWER_SUPPLY_STATUS=Charging", strlen("POWER_SUPPLY_STATUS=Charging")) == 0)
- charging = true;
+ else if (BEGINS_WITH(last, "POWER_SUPPLY_STATUS=Charging"))
+ status = CS_CHARGING;
+ else if (BEGINS_WITH(last, "POWER_SUPPLY_STATUS=Full"))
+ 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 time, perc;
- if (charging)
- time = ((float)full_design - (float)remaining) / (float)present_rate;
- else time = ((float)remaining / (float)present_rate);
+ float remaining_time, perc;
+ 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 {
+ (void)snprintf(part, sizeof(part), "FULL");
+ return part;
+ }
perc = ((float)remaining / (float)full_design);
- int seconds = (int)(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(output, "%s %.02f%% %02d:%02d:%02d", (charging ? "CHR" : "BAT"), (perc * 100), hours, minutes, seconds);
+ (void)snprintf(part, sizeof(part), "%s %.02f%% %02d:%02d:%02d",
+ (status == CS_CHARGING? "CHR" : "BAT"),
+ (perc * 100), hours, minutes, seconds);
}
- return output;
+ return part;
}
/*
*/
static char *get_wireless_info() {
char buf[1024];
- static char output[512];
+ static char part[512];
char *interfaces;
- memset(buf, '\0', sizeof(buf));
- memset(output, '\0', sizeof(output));
+ int fd;
+ memset(buf, 0, sizeof(buf));
+ memset(part, 0, sizeof(part));
- int fd = open("/proc/net/wireless", O_RDONLY);
- read(fd, buf, sizeof(buf));
- close(fd);
+ if ((fd = open("/proc/net/wireless", O_RDONLY)) == -1)
+ die("Could not open /proc/net/wireless");
+ (void)read(fd, buf, sizeof(buf));
+ (void)close(fd);
interfaces = skip_character(buf, '\n', 2) + 1;
while (interfaces < buf+strlen(buf)) {
while (isspace((int)*interfaces))
interfaces++;
if (strncmp(interfaces, wlan_interface, strlen(wlan_interface)) == 0) {
+ int quality;
/* Skip status field (0000) */
interfaces += strlen(wlan_interface) + 2;
interfaces = skip_character(interfaces, ' ', 1);
while (isspace((int)*interfaces))
interfaces++;
- int quality = atoi(interfaces);
+ quality = atoi(interfaces);
/* For some reason, I get 255 sometimes */
- if ((quality == 255) || (quality == 0))
- snprintf(output, sizeof(output), "W: down");
- else snprintf(output, sizeof(output), "W: (%02d%%) ", quality);
- // TODO: get IP address
- return output;
+ if ((quality == 255) || (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 {
+ const char *ip_address;
+ (void)snprintf(part, sizeof(part), "W: (%02d%%) ", quality);
+ ip_address = get_ip_address(wlan_interface);
+ strcpy(part+strlen(part), ip_address);
+ }
+
+ return part;
}
interfaces = skip_character(interfaces, '\n', 1) + 1;
}
- return output;
+ return part;
}
-static char *get_eth_info() {
- static char output[512];
+static const char *get_ip_address(const char *interface) {
+ static char part[512];
struct ifreq ifr;
- memset(output, '\0', sizeof(output));
+ int fd;
+ memset(part, 0, sizeof(part));
- int fd = socket(AF_INET, SOCK_DGRAM, 0);
+ fd = socket(AF_INET, SOCK_DGRAM, 0);
+
+ strcpy(ifr.ifr_name, interface);
+ if (ioctl(fd, SIOCGIFFLAGS, &ifr) < 0)
+ die("Could not get interface flags (SIOCGIFFLAGS)");
- strcpy(ifr.ifr_name, eth_interface);
- if (ioctl(fd, SIOCGIFFLAGS, &ifr) < 0) {
- printf("böses fehler\n");
- /* TODO: errorhandling */
- }
if (!(ifr.ifr_flags & IFF_UP) ||
!(ifr.ifr_flags & IFF_RUNNING)) {
- sprintf(output, "E: down");
close(fd);
- return output;
+ return NULL;
}
- strcpy(ifr.ifr_name, eth_interface);
+ 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, output+3, sizeof(struct sockaddr_in));
- strncpy(output, "E: ", strlen("E: "));
- if (strlen(output) == 0)
- sprintf(output, "E: no IP");
+ (void)inet_ntop(AF_INET, &addr.sin_addr.s_addr, part, (socklen_t)sizeof(struct sockaddr_in));
+ if (strlen(part) == 0)
+ snprintf(part, sizeof(part), "no IP");
}
- close(fd);
- return output;
+ (void)close(fd);
+ return part;
}
-int main() {
+static char *get_eth_info() {
+ static char part[512];
+ const char *ip_address = get_ip_address(eth_interface);
+ int ethspeed = 0;
+
+ if (get_ethspeed) {
+ struct ifreq ifr;
+ struct ethtool_cmd ecmd;
+ int fd, err;
+
+ if ((fd = socket(AF_INET, SOCK_DGRAM, 0)) < 0)
+ write_error_to_statusbar("Could not open socket");
+
+ ecmd.cmd = ETHTOOL_GSET;
+ (void)memset(&ifr, 0, sizeof(ifr));
+ ifr.ifr_data = (caddr_t)&ecmd;
+ (void)strcpy(ifr.ifr_name, eth_interface);
+ if ((err = ioctl(fd, SIOCETHTOOL, &ifr)) == 0)
+ ethspeed = ecmd.speed;
+ else write_error_to_statusbar("Could not get interface speed. Insufficient privileges?");
+
+ (void)close(fd);
+ }
+
+ if (ip_address == NULL)
+ (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;
+}
+
+/*
+ * Checks if the PID in path is still valid by checking if /proc/<pid> exists
+ *
+ */
+static bool process_runs(const char *path) {
+ char pidbuf[512],
+ procbuf[512],
+ *walk;
+ ssize_t n;
+ static glob_t globbuf;
+ struct stat statbuf;
+ const char *real_path;
+ int fd;
+
+ if (glob(path, GLOB_NOCHECK | GLOB_TILDE, NULL, &globbuf) < 0)
+ die("glob() failed");
+ real_path = (globbuf.gl_pathc > 0 ? globbuf.gl_pathv[0] : path);
+ fd = open(real_path, O_RDONLY);
+ globfree(&globbuf);
+ if (fd < 0)
+ return false;
+ if ((n = read(fd, pidbuf, sizeof(pidbuf))) > 0)
+ pidbuf[n] = '\0';
+ (void)close(fd);
+ for (walk = pidbuf; *walk != '\0'; walk++)
+ if (!isdigit((int)(*walk))) {
+ *walk = '\0';
+ break;
+ }
+ (void)snprintf(procbuf, sizeof(procbuf), "/proc/%s", pidbuf);
+ return (stat(procbuf, &statbuf) >= 0);
+}
+
+int main(int argc, char *argv[]) {
char part[512],
+ pathbuf[512],
*end;
+ unsigned int i;
+ int load_avg;
- while (1) {
- memset(output, '\0', sizeof(output));
- first_push = true;
+ 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;
- char *wireless_info = get_wireless_info();
- push_part(wireless_info, strlen(wireless_info));
+ load_configuration(configfile);
+ 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);
+ }
- char *eth_info = get_eth_info();
- push_part(eth_info, strlen(eth_info));
+ while (1) {
+ 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);
+ }
- char *battery_info = get_battery_info();
- push_part(battery_info, strlen(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);
- read(load_avg, part, sizeof(part));
- close(load_avg);
+ if ((load_avg = open("/proc/loadavg", O_RDONLY)) == -1)
+ die("Could not open /proc/loadavg");
+ (void)read(load_avg, part, sizeof(part));
+ (void)close(load_avg);
end = skip_character(part, ' ', 3);
- push_part(part, (end-part));
+ *end = '\0';
+ write_to_statusbar(concat(order[ORDER_LOAD], "load"), part);
- /* Get date & time */
- time_t current_time = time(NULL);
- struct tm *current_tm = localtime(¤t_time);
- strftime(part, sizeof(part), "%d.%m.%Y %H:%M:%S", current_tm);
- push_part(part, strlen(part));
-
- printf("output = %s\n", output);
-
- int fd = open("/mnt/wmii/rbar/status", O_RDWR);
- write(fd, output, strlen(output));
- close(fd);
+ 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);
}
}