diff options
Diffstat (limited to 'components/wifi.c')
| -rw-r--r-- | components/wifi.c | 158 |
1 files changed, 83 insertions, 75 deletions
diff --git a/components/wifi.c b/components/wifi.c index 388a30d..33e09b7 100644 --- a/components/wifi.c +++ b/components/wifi.c @@ -1,92 +1,100 @@ /* See LICENSE file for copyright and license details. */ #if defined(__linux__) -#include <errno.h> -#include <ifaddrs.h> -#include <linux/wireless.h> -#include <sys/socket.h> -#include <stdio.h> -#include <limits.h> -#include <string.h> -#include <sys/ioctl.h> -#include <unistd.h> + #include <errno.h> + #include <ifaddrs.h> + #include <linux/wireless.h> + #include <sys/socket.h> + #include <stdio.h> + #include <limits.h> + #include <string.h> + #include <sys/ioctl.h> + #include <unistd.h> -#include "../util.h" + #include "../util.h" -const char * -wifi_perc(const char *iface) -{ - int i, cur; - float perc; - int total = 70; /* the max of /proc/net/wireless */ - char *p, *datastart; - char path[PATH_MAX]; - char status[5]; - FILE *fp; + const char * + wifi_perc(const char *iface) + { + int i, cur; + float perc; + int total = 70; /* the max of /proc/net/wireless */ + char *p, *datastart; + char path[PATH_MAX]; + char status[5]; + FILE *fp; - snprintf(path, sizeof(path), "%s%s%s", "/sys/class/net/", iface, "/operstate"); - fp = fopen(path, "r"); - if (fp == NULL) { - fprintf(stderr, "fopen '%s': %s\n", path, strerror(errno)); - return NULL; - } - p = fgets(status, 5, fp); - fclose(fp); - if(!p || strcmp(status, "up\n") != 0) { - return NULL; - } + snprintf(path, sizeof(path), "%s%s%s", "/sys/class/net/", iface, + "/operstate"); + fp = fopen(path, "r"); + if (fp == NULL) { + fprintf(stderr, "fopen '%s': %s\n", path, + strerror(errno)); + return NULL; + } + p = fgets(status, 5, fp); + fclose(fp); + if(!p || strcmp(status, "up\n") != 0) { + return NULL; + } - fp = fopen("/proc/net/wireless", "r"); - if (fp == NULL) { - fprintf(stderr, "fopen '/proc/net/wireless': %s\n", strerror(errno)); - return NULL; - } + fp = fopen("/proc/net/wireless", "r"); + if (fp == NULL) { + fprintf(stderr, "fopen '/proc/net/wireless': %s\n", + strerror(errno)); + return NULL; + } - for (i = 0; i < 3; i++) { - if (!(p = fgets(buf, sizeof(buf) - 1, fp))) - break; - } - fclose(fp); - if (i < 2 || !p) - return NULL; + for (i = 0; i < 3; i++) { + if (!(p = fgets(buf, sizeof(buf) - 1, fp))) + break; + } + fclose(fp); + if (i < 2 || !p) + return NULL; + + if ((datastart = strstr(buf, iface)) == NULL) + return NULL; - if ((datastart = strstr(buf, iface)) == NULL) - return NULL; + datastart = (datastart+(strlen(iface)+1)); + sscanf(datastart + 1, " %*d %d %*d %*d\t\t %*d\t " + "%*d\t\t%*d\t\t %*d\t %*d\t\t %*d", &cur); - datastart = (datastart+(strlen(iface)+1)); - sscanf(datastart + 1, " %*d %d %*d %*d %*d %*d %*d %*d %*d %*d", &cur); + perc = (float)cur / total * 100.0; - perc = (float)cur / total * 100.0; + return bprintf("%.0f", perc); + } - return bprintf("%.0f", perc); -} + const char * + wifi_essid(const char *iface) + { + static char id[IW_ESSID_MAX_SIZE+1]; + int sockfd = socket(AF_INET, SOCK_DGRAM, 0); + struct iwreq wreq; -const char * -wifi_essid(const char *iface) -{ - static char id[IW_ESSID_MAX_SIZE+1]; - int sockfd = socket(AF_INET, SOCK_DGRAM, 0); - struct iwreq wreq; + memset(&wreq, 0, sizeof(struct iwreq)); + wreq.u.essid.length = IW_ESSID_MAX_SIZE+1; + snprintf(wreq.ifr_name, sizeof(wreq.ifr_name), "%s", iface); - memset(&wreq, 0, sizeof(struct iwreq)); - wreq.u.essid.length = IW_ESSID_MAX_SIZE+1; - snprintf(wreq.ifr_name, sizeof(wreq.ifr_name), "%s", iface); + if (sockfd == -1) { + fprintf(stderr, "socket 'AF_INET': %s\n", + strerror(errno)); + return NULL; + } + wreq.u.essid.pointer = id; + if (ioctl(sockfd,SIOCGIWESSID, &wreq) == -1) { + fprintf(stderr, "ioctl 'SIOCGIWESSID': %s\n", + strerror(errno)); + close(sockfd); + return NULL; + } - if (sockfd == -1) { - fprintf(stderr, "socket 'AF_INET': %s\n", strerror(errno)); - return NULL; - } - wreq.u.essid.pointer = id; - if (ioctl(sockfd,SIOCGIWESSID, &wreq) == -1) { - fprintf(stderr, "ioctl 'SIOCGIWESSID': %s\n", strerror(errno)); close(sockfd); - return NULL; - } - close(sockfd); - - if (strcmp(id, "") == 0) - return NULL; - else - return id; -} + if (strcmp(id, "") == 0) + return NULL; + else + return id; + } +#elif defined(__OpenBSD__) + /* unimplemented */ #endif |