#include "adb_parser.h" #include #include #include "util/log.h" #include "util/str.h" static char * sc_adb_parse_device_ip_from_line(char *line, size_t len) { // One line from "ip route" looks like: // "192.168.1.0/24 dev wlan0 proto kernel scope link src 192.168.1.x" // Get the location of the device name (index of "wlan0" in the example) ssize_t idx_dev_name = sc_str_index_of_column(line, 2, " "); if (idx_dev_name == -1) { return NULL; } // Get the location of the ip address (column 8, but column 6 if we start // from column 2). Must be computed before truncating individual columns. ssize_t idx_ip = sc_str_index_of_column(&line[idx_dev_name], 6, " "); if (idx_ip == -1) { return NULL; } // idx_ip is searched from &line[idx_dev_name] idx_ip += idx_dev_name; char *dev_name = &line[idx_dev_name]; sc_str_truncate(dev_name, len - idx_dev_name + 1, " \t"); char *ip = &line[idx_ip]; sc_str_truncate(ip, len - idx_ip + 1, " \t"); // Only consider lines where the device name starts with "wlan" if (strncmp(dev_name, "wlan", sizeof("wlan") - 1)) { LOGD("Device ip lookup: ignoring %s (%s)", ip, dev_name); return NULL; } return strdup(ip); } char * sc_adb_parse_device_ip_from_output(char *buf, size_t buf_len) { size_t idx_line = 0; while (idx_line < buf_len && buf[idx_line] != '\0') { char *line = &buf[idx_line]; size_t len = sc_str_truncate(line, buf_len - idx_line, "\n"); // The same, but without any trailing '\r' size_t line_len = sc_str_remove_trailing_cr(line, len); char *ip = sc_adb_parse_device_ip_from_line(line, line_len); if (ip) { // Found return ip; } // The next line starts after the '\n' (replaced by `\0`) idx_line += len + 1; } return NULL; }