#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 "wmiistatus.h"
+#include <glob.h>
+#include <dirent.h>
+#include "wmiistatus.h"
#include "config.h"
-static void write_to_statusbar(const char *message) {
- int fd = open(wmii_path, O_RDWR);
+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);
+
+ while ((ent = readdir(dir)) != NULL) {
+ if (ent->d_type == DT_REG) {
+ sprintf(pathbuf, "%s%s", wmii_path, ent->d_name);
+ unlink(pathbuf);
+ }
+ }
+
+ closedir(dir);
+}
+
+static void create_file(const char *name) {
+ char pathbuf[strlen(wmii_path)+256+1];
+
+ sprintf(pathbuf, "%s%s", wmii_path, name);
+ int fd = creat(pathbuf, S_IRUSR | S_IWUSR);
+ if (fd < 0)
+ exit(-4);
+ close(fd);
+}
+
+static void write_to_statusbar(const char *name, const char *message) {
+ char pathbuf[strlen(wmii_path)+256+1];
+
+ 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);
}
+static void write_error_to_statusbar(const char *message) {
+ cleanup_rbar_dir();
+ write_to_statusbar("error", message);
+}
+
/*
* Write errormessage to statusbar and exit
*
*/
-static void die(const char *message) {
- write_to_statusbar(message);
+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);
}
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.
char buf[1024];
static char part[512];
char *walk, *last = buf;
- int fd = open("/sys/class/power_supply/BAT0/uevent", O_RDONLY);
+ int fd = open(battery, O_RDONLY);
if (fd == -1)
- die("Could not open /sys/class/power_supply/BAT0/uevent");
+ die("Could not open %s", battery);
int full_design = -1,
remaining = -1,
present_rate = -1;
memset(part, '\0', sizeof(part));
int fd = open("/proc/net/wireless", O_RDONLY);
+ if (fd == -1)
+ die("Could not open /proc/net/wireless");
read(fd, buf, sizeof(buf));
close(fd);
/* 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);
- // TODO: get IP address
+ 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;
return part;
}
-static char *get_eth_info() {
+static 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);
- strcpy(ifr.ifr_name, eth_interface);
+ 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)) {
- sprintf(part, "E: down");
close(fd);
- return part;
+ 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, part+3, sizeof(struct sockaddr_in));
- strncpy(part, "E: ", strlen("E: "));
+ inet_ntop(AF_INET, &addr.sin_addr.s_addr, part, sizeof(struct sockaddr_in));
if (strlen(part) == 0)
- sprintf(part, "E: no IP");
+ sprintf(part, "no IP");
}
close(fd);
return part;
}
+static char *get_eth_info() {
+ static char part[512];
+ char *ip_address = get_ip_address(eth_interface);
+
+ if (ip_address == NULL)
+ snprintf(part, sizeof(part), "E: down");
+ else 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;
+ int n;
+ static glob_t globbuf;
+ struct stat statbuf;
+
+ 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);
+ 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);
+ return (stat(procbuf, &statbuf) >= 0);
+}
+
int main(void) {
char part[512],
+ pathbuf[512],
*end;
+ unsigned int i;
- while (1) {
- memset(output, '\0', sizeof(output));
- first_push = true;
-
- char *wireless_info = get_wireless_info();
- push_part(wireless_info, strlen(wireless_info));
+ 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 *eth_info = get_eth_info();
- push_part(eth_info, strlen(eth_info));
+ 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]);
+ write_to_statusbar(pathbuf, part);
+ }
- char *battery_info = get_battery_info();
- push_part(battery_info, strlen(battery_info));
+ 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());
-
/* Get load */
int load_avg = open("/proc/loadavg", O_RDONLY);
+ if (load_avg == -1)
+ die("Could not open /proc/loadavg");
read(load_avg, part, sizeof(part));
close(load_avg);
end = skip_character(part, ' ', 3);
- push_part(part, (end-part));
+ *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), "%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);
+ strftime(part, sizeof(part), time_format, current_tm);
+ write_to_statusbar(ORDER_TIME "time", part);
sleep(1);
}
projects / i3 / i3status / blobdiff