diff options
Diffstat (limited to 'i3status.c')
| -rw-r--r-- | i3status.c | 674 |
1 files changed, 17 insertions, 657 deletions
@@ -46,653 +46,34 @@ #include <stdlib.h> #include <limits.h> #include <ctype.h> -#include <net/if.h> #include <sys/ioctl.h> #include <sys/socket.h> #include <netinet/in.h> -#include <arpa/inet.h> -#include <glob.h> -#include <dirent.h> #include <getopt.h> #include <signal.h> #include "queue.h" -#ifdef LINUX -#include <linux/ethtool.h> -#include <linux/sockios.h> -#else -/* TODO: correctly check for *BSD */ -#include <sys/param.h> -#include <sys/sysctl.h> -#include <sys/resource.h> -#endif - #include "i3status.h" -#define BAR "^fg(#333333)^p(5;-2)^ro(2)^p()^fg()^p(5)" - -struct battery { - char *path; - /* Use last full capacity instead of design capacity */ - bool use_last_full; - SIMPLEQ_ENTRY(battery) batteries; -}; - -SIMPLEQ_HEAD(battery_head, battery) batteries; +struct battery_head batteries; /* socket file descriptor for general purposes */ -static int general_socket; - -static const char *wlan_interface; -static const char *eth_interface; -static char *wmii_path; -static const char *time_format; -static bool use_colors; -static bool get_ethspeed; -static bool get_cpu_temperature; -static char *thermal_zone; -static const char *wmii_normcolors = "#222222 #333333"; -static char order[MAX_ORDER][2]; -static const char **run_watches; -static unsigned int num_run_watches; -static unsigned int interval = 1; - -static int max(int a, int b) { - return (a > b ? a : b); -} - -/* - * 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; -} - -/* - * Returns the correct color format for dzen (^fg(color)) or wmii (color <normcolors>) - * - */ -static char *color(const char *colorstr) { - static char colorbuf[32]; -#ifdef DZEN - (void)snprintf(colorbuf, sizeof(colorbuf), "^fg(%s)", colorstr); -#else - (void)snprintf(colorbuf, sizeof(colorbuf), "%s %s ", colorstr, wmii_normcolors); -#endif - return colorbuf; -} - -/* - * Cleans wmii's /rbar directory by deleting all regular files - * - */ -static void cleanup_rbar_dir() { -#ifdef DZEN - return; -#endif - 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) { -#ifdef DZEN - return; -#endif - char pathbuf[strlen(wmii_path)+256+1]; - int fd; - int flags = O_CREAT | O_WRONLY; - struct stat statbuf; - - (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 = color("#888888"); - 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; - char pathbuf[512]; - -#ifndef DZEN - struct stat statbuf; - /* Wait until wmii_path/rbar exists */ - for (; stat(wmii_path, &statbuf) < 0; sleep(interval)); -#endif - - cleanup_rbar_dir(); - if (wlan_interface) - create_file(concat(order[ORDER_WLAN],"wlan")); - if (eth_interface) - create_file(concat(order[ORDER_ETH],"eth")); - if (get_cpu_temperature) - create_file(concat(order[ORDER_CPU_TEMPERATURE], "cpu_temperature")); - 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, bool final_entry) { -#ifdef DZEN - if (final_entry) { - if (printf("%s^p(6)\n", message) < 0) { - perror("printf"); - exit(1); - } - - fflush(stdout); - return; - } - if (printf("%s" BAR, message) < 0) { - perror("printf"); - exit(1); - } - return; -#endif - - 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) { - /* 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, true); -} - -/* - * 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); - - if (wmii_path != NULL) - write_error_to_statusbar(buffer); - else - fprintf(stderr, "%s", 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; - size_t len = strlen(input); - int blanks = 0; - - for (walk = input; ((size_t)(walk - input) < len) && (blanks < amount); walk++) - if (*walk == character) - blanks++; - - return (walk == input ? walk : walk-1); -} - -/* - * 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(struct battery *bat) { - char buf[1024]; - static char part[512]; - char *walk, *last; - int fd; - int full_design = -1, - remaining = -1, - present_rate = -1; - charging_status_t status = CS_DISCHARGING; - - if ((fd = open(bat->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 == '\n') { - last = walk+1; - continue; - } - - if (*walk != '=') - continue; - - 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); - 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 { - /* The only thing left is the full capacity */ - if (bat->use_last_full) { - if (!BEGINS_WITH(last, "POWER_SUPPLY_ENERGY_FULL") && - !BEGINS_WITH(last, "POWER_SUPPLY_CHARGE_FULL")) - continue; - } else { - if (!BEGINS_WITH(last, "POWER_SUPPLY_CHARGE_FULL_DESIGN") && - !BEGINS_WITH(last, "POWER_SUPPLY_ENERGY_FULL_DESIGN")) - continue; - } - - full_design = atoi(walk+1); - } - } - (void)close(fd); - - if ((full_design == 1) || (remaining == -1)) - return part; - - if (present_rate > 0) { - 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 remaining_time = 0; - - seconds = (int)(remaining_time * 3600.0); - hours = seconds / 3600; - seconds -= (hours * 3600); - minutes = seconds / 60; - seconds -= (minutes * 60); - - (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), - max(hours, 0), max(minutes, 0), max(seconds, 0)); - } else { - (void)snprintf(part, sizeof(part), "%s %.02f%%", - (status == CS_CHARGING ? "CHR" : - (status == CS_DISCHARGING ? "BAT" : "FULL")), - (((float)remaining / (float)full_design) * 100)); - } - return part; -} - -/* - * 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; - struct sockaddr_in addr; - socklen_t len = sizeof(struct sockaddr_in); - memset(part, 0, sizeof(part)); - - /* First check if the interface is running */ - (void)strcpy(ifr.ifr_name, interface); - if (ioctl(general_socket, SIOCGIFFLAGS, &ifr) < 0 || - !(ifr.ifr_flags & IFF_RUNNING)) - return NULL; - - /* Interface is up, get the IP address */ - (void)strcpy(ifr.ifr_name, interface); - ifr.ifr_addr.sa_family = AF_INET; - if (ioctl(general_socket, SIOCGIFADDR, &ifr) < 0) - return "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"); - - return part; -} - -/* - * 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; - int fd; - memset(buf, 0, sizeof(buf)); - memset(part, 0, sizeof(part)); - - if ((fd = open("/proc/net/wireless", O_RDONLY)) == -1) - die("Could not open /proc/net/wireless\n"); - (void)read(fd, buf, sizeof(buf)); - (void)close(fd); - - interfaces = skip_character(buf, '\n', 1) + 1; - while ((interfaces = skip_character(interfaces, '\n', 1)+1) < buf+strlen(buf)) { - while (isspace((int)*interfaces)) - interfaces++; - 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), "%sW: down", color("#FF0000")); - else (void)snprintf(part, sizeof(part), "W: down"); - } else (void)snprintf(part, sizeof(part), "%sW: (%03d%%) %s", - color("#00FF00"), quality, get_ip_address(wlan_interface)); - return part; - } - - return part; -} - -/* - * Combines ethernet IP addresses and speed (if requested) for displaying - * - */ -static char *get_eth_info() { - static char part[512]; - const char *ip_address = get_ip_address(eth_interface); - int ethspeed = 0; - - if (get_ethspeed) { -#ifdef LINUX - /* 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; -#endif - } - - 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; -} - -/* - * Reads the CPU temperature from /sys/class/thermal/thermal_zone0/temp and - * returns the temperature in degree celcius. - * - */ -static char *get_cpu_temperature_info() { - static char part[16]; - char buf[16]; - int temp; - int fd; - - memset(buf, 0, sizeof(buf)); - memset(part, 0, sizeof(part)); - - if ((fd = open(thermal_zone, O_RDONLY)) == -1) - die("Could not open %s\n", thermal_zone); - (void)read(fd, buf, sizeof(buf)); - (void)close(fd); - - if (sscanf(buf, "%d", &temp) != 1) - (void)snprintf(part, sizeof(part), "T: ? C"); - else - (void)snprintf(part, sizeof(part), "T: %d C", (temp/1000)); - - return part; -} - -/* - * Checks if the PID in path is still valid by checking: - * (Linux) if /proc/<pid> exists - * (NetBSD) if sysctl returns process infos for this pid - * - */ -static bool process_runs(const char *path) { - char pidbuf[16]; - static glob_t globbuf; - int fd; - memset(pidbuf, 0, sizeof(pidbuf)); - - if (glob(path, GLOB_NOCHECK | GLOB_TILDE, NULL, &globbuf) < 0) - die("glob() failed\n"); - fd = open((globbuf.gl_pathc > 0 ? globbuf.gl_pathv[0] : path), O_RDONLY); - globfree(&globbuf); - if (fd < 0) - return false; - (void)read(fd, pidbuf, sizeof(pidbuf)); - (void)close(fd); - -#ifdef LINUX - struct stat statbuf; - char procbuf[512]; - (void)snprintf(procbuf, sizeof(procbuf), "/proc/%ld", strtol(pidbuf, NULL, 10)); - return (stat(procbuf, &statbuf) >= 0); -#else - /* TODO: correctly check for NetBSD. Evaluate if this runs on OpenBSD/FreeBSD */ - struct kinfo_proc info; - size_t length = sizeof(struct kinfo_proc); - int mib[4] = { CTL_KERN, KERN_PROC, KERN_PROC_PID, strtol(pidbuf, NULL, 10) }; - if (sysctl(mib, 4, &info, &length, NULL, 0) < 0) - return false; - return (length != 0); -#endif -} - -/* - * Reads the configuration from the given file - * - */ -static int load_configuration(const char *configfile) { - #define OPT(x) else if (strcasecmp(dest_name, x) == 0) - - /* check if the file exists */ - struct stat buf; - if (stat(configfile, &buf) < 0) - return -1; - - int result = 0; - FILE *handle = fopen(configfile, "r"); - if (handle == NULL) - die("Could not open configfile\n"); - char dest_name[512], dest_value[512], whole_buffer[1026]; - - while (!feof(handle)) { - char *ret; - if ((ret = fgets(whole_buffer, 1024, handle)) == whole_buffer) { - /* sscanf implicitly strips whitespace */ - if (sscanf(whole_buffer, "%s %[^\n]", dest_name, dest_value) < 1) - continue; - } else if (ret != NULL) - die("Could not read line in configuration file\n"); - - /* skip comments and empty lines */ - if (dest_name[0] == '#' || strlen(dest_name) < 3) - continue; - - OPT("wlan") - wlan_interface = strdup(dest_value); - OPT("eth") - eth_interface = strdup(dest_value); - OPT("time_format") - time_format = strdup(dest_value); - OPT("battery") { - struct battery *new = calloc(1, sizeof(struct battery)); - if (new == NULL) - die("Could not allocate memory\n"); - if (asprintf(&(new->path), "/sys/class/power_supply/BAT%d/uevent", atoi(dest_value)) == -1) - die("Could not build battery path\n"); - - /* check if flags were specified for this battery */ - if (strstr(dest_value, ",") != NULL) { - char *flags = strstr(dest_value, ","); - flags++; - if (*flags == 'f') - new->use_last_full = true; - } - SIMPLEQ_INSERT_TAIL(&batteries, new, batteries); - } OPT("color") - use_colors = true; - OPT("get_ethspeed") - get_ethspeed = true; - OPT("get_cpu_temperature") { - get_cpu_temperature = true; - if (strlen(dest_value) > 0) { - if (asprintf(&thermal_zone, "/sys/class/thermal/thermal_zone%d/temp", atoi(dest_value)) == -1) - die("Could not build thermal_zone path\n"); - } else { - if (asprintf(&thermal_zone, "/sys/class/thermal/thermal_zone0/temp") == -1) - die("Could not build thermal_zone path\n"); - } - } OPT("normcolors") - wmii_normcolors = strdup(dest_value); - OPT("interval") - interval = atoi(dest_value); - OPT("wmii_path") - { -#ifndef DZEN - static glob_t globbuf; - struct stat stbuf; - if (glob(dest_value, GLOB_NOCHECK | GLOB_TILDE, NULL, &globbuf) < 0) - die("glob() failed\n"); - wmii_path = strdup(globbuf.gl_pathc > 0 ? globbuf.gl_pathv[0] : dest_value); - globfree(&globbuf); - - if ((stat(wmii_path, &stbuf)) == -1) { - fprintf(stderr, "Warning: wmii_path contains an invalid path\n"); - free(wmii_path); - wmii_path = strdup(dest_value); - } - if (wmii_path[strlen(wmii_path)-1] != '/') - die("wmii_path is not terminated by /\n"); -#endif - } - OPT("run_watch") - { - char *name = strdup(dest_value); - char *path = name; - while (*path != ' ') - path++; - *(path++) = '\0'; - num_run_watches += 2; - run_watches = realloc(run_watches, sizeof(char*) * num_run_watches); - run_watches[num_run_watches-2] = name; - run_watches[num_run_watches-1] = path; - } - OPT("order") - { - #define SET_ORDER(opt, idx) { if (strcasecmp(token, opt) == 0) sprintf(order[idx], "%d", c++); } - char *walk, *token; - int c = 0; - walk = token = dest_value; - while (*walk != '\0') { - while ((*walk != ',') && (*walk != '\0')) - walk++; - *(walk++) = '\0'; - SET_ORDER("run", ORDER_RUN); - SET_ORDER("wlan", ORDER_WLAN); - SET_ORDER("eth", ORDER_ETH); - SET_ORDER("battery", ORDER_BATTERY); - SET_ORDER("cpu_temperature", ORDER_CPU_TEMPERATURE); - SET_ORDER("load", ORDER_LOAD); - SET_ORDER("time", ORDER_TIME); - token = walk; - while (isspace((int)(*token))) - token++; - } - } - else - { - result = -2; - die("Unknown configfile option: %s\n", dest_name); - } - } - fclose(handle); - -#ifndef DZEN - if (wmii_path == NULL) - exit(EXIT_FAILURE); -#endif - - return result; -} +int general_socket; + +const char *wlan_interface; +const char *eth_interface; +const char *wmii_path; +const char *time_format; +bool use_colors; +bool get_ethspeed; +bool get_cpu_temperature; +char *thermal_zone; +const char *wmii_normcolors = "#222222 #333333"; +char order[MAX_ORDER][2]; +const char **run_watches; +unsigned int num_run_watches; +unsigned int interval = 1; /* * Exit upon SIGPIPE because when we have nowhere to write to, gathering @@ -765,28 +146,7 @@ int main(int argc, char *argv[]) { if (get_cpu_temperature) write_to_statusbar(concat(order[ORDER_CPU_TEMPERATURE], "cpu_temperature"), get_cpu_temperature_info(), false); - /* Get load */ -#ifdef LINUX - int load_avg; - if ((load_avg = open("/proc/loadavg", O_RDONLY)) == -1) - die("Could not open /proc/loadavg\n"); - (void)read(load_avg, part, sizeof(part)); - (void)close(load_avg); - *skip_character(part, ' ', 3) = '\0'; -#else - /* TODO: correctly check for NetBSD, check if it works the same on *BSD */ - struct loadavg load; - size_t length = sizeof(struct loadavg); - int mib[2] = { CTL_VM, VM_LOADAVG }; - if (sysctl(mib, 2, &load, &length, NULL, 0) < 0) - die("Could not sysctl({ CTL_VM, VM_LOADAVG })\n"); - double scale = load.fscale; - (void)snprintf(part, sizeof(part), "%.02f %.02f %.02f", - (double)load.ldavg[0] / scale, - (double)load.ldavg[1] / scale, - (double)load.ldavg[2] / scale); -#endif - write_to_statusbar(concat(order[ORDER_LOAD], "load"), part, !time_format); + write_to_statusbar(concat(order[ORDER_LOAD], "load"), get_load(), !time_format); if (time_format) { /* Get date & time */ |