From 949728e8c5a7855663bcd6f6c8b0eab7af055ac4 Mon Sep 17 00:00:00 2001 From: Michael Stapelberg Date: Fri, 3 Oct 2008 03:18:09 +0200 Subject: [PATCH] Initial commit --- Makefile | 2 + wmiistatus.c | 206 +++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 208 insertions(+) create mode 100644 Makefile create mode 100644 wmiistatus.c diff --git a/Makefile b/Makefile new file mode 100644 index 0000000..1d1250d --- /dev/null +++ b/Makefile @@ -0,0 +1,2 @@ +all: + gcc -Wall -O2 -o wmiistatus wmiistatus.c diff --git a/wmiistatus.c b/wmiistatus.c new file mode 100644 index 0000000..d6ebc14 --- /dev/null +++ b/wmiistatus.c @@ -0,0 +1,206 @@ +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +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" + +char output[512]; +bool first_push = true; + +static char *skip_character(char *input, char character, int amount) { + char *walk; + int len = strlen(input), + blanks = 0; + + for (walk = input; ((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); + int full_design = -1, + remaining = -1, + present_rate = -1; + bool charging = false; + memset(output, '\0', sizeof(output)); + read(fd, buf, sizeof(buf)); + for (walk = buf; (walk-buf) < 1024; walk++) + if (*walk == '=') { + if (strncmp(last, "POWER_SUPPLY_ENERGY_FULL_DESIGN", strlen("POWER_SUPPLY_ENERGY_FULL_DESIGN")) == 0) + full_design = atoi(walk+1); + else if (strncmp(last, "POWER_SUPPLY_ENERGY_NOW", strlen("POWER_SUPPLY_ENERGY_NOW")) == 0) + remaining = atoi(walk+1); + else if (strncmp(last, "POWER_SUPPLY_CURRENT_NOW", strlen("POWER_SUPPLY_CURRENT_NOW")) == 0) + present_rate = atoi(walk+1); + else if (strncmp(last, "POWER_SUPPLY_STATUS=Charging", strlen("POWER_SUPPLY_STATUS=Charging")) == 0) + charging = true; + } else if (*walk == '\n') + last = walk+1; + 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); + perc = ((float)remaining / (float)full_design); + + int seconds = (int)(time * 3600.0); + int hours = seconds / 3600; + seconds -= (hours * 3600); + int minutes = seconds / 60; + seconds -= (minutes * 60); + + sprintf(output, "%s %.02f%% %02d:%02d:%02d", (charging ? "CHR" : "BAT"), (perc * 100), hours, minutes, seconds); + } + return output; +} + +/* + * Just parses /proc/net/wireless + * + */ +static char *get_wireless_info() { + char buf[1024]; + static char output[512]; + char *interfaces; + memset(buf, '\0', sizeof(buf)); + memset(output, '\0', sizeof(output)); + + int fd = open("/proc/net/wireless", O_RDONLY); + read(fd, buf, sizeof(buf)); + 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) { + /* 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(output, sizeof(output), "W: (%02d%%) ", quality); + return output; + } + interfaces = skip_character(interfaces, '\n', 1) + 1; + } + + return output; +} + +static char *get_eth_info() { + static char output[512]; + struct ifreq ifr; + memset(output, '\0', sizeof(output)); + + int fd = socket(AF_INET, SOCK_DGRAM, 0); + + 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; + } + + strcpy(ifr.ifr_name, eth_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"); + } + + close(fd); + return output; +} + +int main() { + char part[512], + *end; + + while (1) { + memset(output, '\0', sizeof(output)); + first_push = true; + + char *wireless_info = get_wireless_info(); + push_part(wireless_info, strlen(wireless_info)); + + char *eth_info = get_eth_info(); + push_part(eth_info, strlen(eth_info)); + + char *battery_info = get_battery_info(); + push_part(battery_info, strlen(battery_info)); + + + /* Get load */ + int load_avg = open("/proc/loadavg", O_RDONLY); + read(load_avg, part, sizeof(part)); + close(load_avg); + end = skip_character(part, ' ', 3); + push_part(part, (end-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); + + sleep(1); + } +} -- 2.39.5