int id_main(int argc, char **argv)
{
struct passwd *p;
uid_t uid;
gid_t gid;
unsigned long flags;
short status;
/* Don't allow -n -r -nr -ug -rug -nug -rnug */
/* Don't allow more than one username */
bb_opt_complementally = "?1:?:u--g:g--u:r?ug:n?ug";
flags = bb_getopt_ulflags(argc, argv, "rnug");
/* This values could be overwritten later */
uid = geteuid();
gid = getegid();
if (flags & PRINT_REAL) {
uid = getuid();
gid = getgid();
}
if(argv[optind]) {
p=getpwnam(argv[optind]);
/* bb_xgetpwnam is needed because it exits on failure */
uid = bb_xgetpwnam(argv[optind]);
gid = p->pw_gid;
/* in this case PRINT_REAL is the same */
}
if(flags & (JUST_GROUP | JUST_USER)) {
/* JUST_GROUP and JUST_USER are mutually exclusive */
if(flags & NAME_NOT_NUMBER) {
/* bb_getpwuid and bb_getgrgid exit on failure so puts cannot segfault */
puts((flags & JUST_USER) ? bb_getpwuid(NULL, uid, -1 ) : bb_getgrgid(NULL, gid, -1 ));
} else {
bb_printf("%u\n",(flags & JUST_USER) ? uid : gid);
}
/* exit */
bb_fflush_stdout_and_exit(EXIT_SUCCESS);
}
/* Print full info like GNU id */
/* bb_getpwuid doesn't exit on failure here */
status=printf_full(uid, bb_getpwuid(NULL, uid, 0), 'u');
putchar(' ');
/* bb_getgrgid doesn't exit on failure here */
status|=printf_full(gid, bb_getgrgid(NULL, gid, 0), 'g');
putchar('\n');
bb_fflush_stdout_and_exit(status);
}
int whoami_main(int argc, char **argv)
{
if (argc > 1)
bb_show_usage();
puts(bb_getpwuid(NULL, geteuid(), -1));
/* exits on error */
fflush_stdout_and_exit(EXIT_SUCCESS);
}
int logger_main(int argc, char **argv)
{
char *str_p, *str_t;
int i = 0;
char name[80];
/* Fill out the name string early (may be overwritten later) */
bb_getpwuid(name, sizeof(name), geteuid());
str_t = name;
/* Parse any options */
getopt32(argv, "p:st:", &str_p, &str_t);
if (option_mask32 & 0x2) /* -s */
i |= LOG_PERROR;
//if (option_mask32 & 0x4) /* -t */
openlog(str_t, i, 0);
i = LOG_USER | LOG_NOTICE;
if (option_mask32 & 0x1) /* -p */
i = pencode(str_p);
argc -= optind;
argv += optind;
if (!argc) {
#define strbuf bb_common_bufsiz1
while (fgets(strbuf, COMMON_BUFSIZE, stdin)) {
if (strbuf[0]
&& NOT_LONE_CHAR(strbuf, '\n')
) {
/* Neither "" nor "\n" */
syslog(i, "%s", strbuf);
}
}
} else {
char *message = NULL;
int len = 0;
int pos = 0;
do {
len += strlen(*argv) + 1;
message = xrealloc(message, len + 1);
sprintf(message + pos, " %s", *argv),
pos = len;
} while (*++argv);
syslog(i, "%s", message + 1); /* skip leading " " */
}
closelog();
return EXIT_SUCCESS;
}
procps_status_t * procps_scan(int save_user_arg0)
{
static DIR *dir;
struct dirent *entry;
static procps_status_t ret_status;
char *name;
int n;
char status[32];
char *status_tail;
char buf[PROCPS_BUFSIZE];
procps_status_t curstatus;
int pid;
long tasknice;
struct stat sb;
if (!dir) {
dir = opendir("/proc");
if(!dir)
bb_error_msg_and_die("Can't open /proc");
}
for(;;) {
if((entry = readdir(dir)) == NULL) {
closedir(dir);
dir = 0;
return 0;
}
name = entry->d_name;
if (!(*name >= '0' && *name <= '9'))
continue;
memset(&curstatus, 0, sizeof(procps_status_t));
pid = atoi(name);
curstatus.pid = pid;
status_tail = status + sprintf(status, "/proc/%d", pid);
if(stat(status, &sb))
continue;
bb_getpwuid(curstatus.user, sb.st_uid, sizeof(curstatus.user));
strcpy(status_tail, "/stat");
n = read_to_buf(status, buf);
if(n < 0)
continue;
name = strrchr(buf, ')'); /* split into "PID (cmd" and "<rest>" */
if(name == 0 || name[1] != ' ')
continue;
*name = 0;
sscanf(buf, "%*s (%15c", curstatus.short_cmd);
n = sscanf(name+2,
"%c %d "
"%*s %*s %*s %*s " /* pgrp, session, tty, tpgid */
"%*s %*s %*s %*s %*s " /* flags, min_flt, cmin_flt, maj_flt, cmaj_flt */
#ifdef CONFIG_FEATURE_TOP_CPU_USAGE_PERCENTAGE
"%lu %lu "
#else
"%*s %*s "
#endif
"%*s %*s %*s " /* cutime, cstime, priority */
"%ld "
"%*s %*s %*s " /* timeout, it_real_value, start_time */
"%*s " /* vsize */
"%ld",
curstatus.state, &curstatus.ppid,
#ifdef CONFIG_FEATURE_TOP_CPU_USAGE_PERCENTAGE
&curstatus.utime, &curstatus.stime,
#endif
&tasknice,
&curstatus.rss);
#ifdef CONFIG_FEATURE_TOP_CPU_USAGE_PERCENTAGE
if(n != 6)
#else
if(n != 4)
#endif
continue;
if (curstatus.rss == 0 && curstatus.state[0] != 'Z')
curstatus.state[1] = 'W';
else
curstatus.state[1] = ' ';
if (tasknice < 0)
curstatus.state[2] = '<';
else if (tasknice > 0)
curstatus.state[2] = 'N';
else
curstatus.state[2] = ' ';
#ifdef PAGE_SHIFT
curstatus.rss <<= (PAGE_SHIFT - 10); /* 2**10 = 1kb */
#else
curstatus.rss *= (getpagesize() >> 10); /* 2**10 = 1kb */
#endif
if(save_user_arg0) {
strcpy(status_tail, "/cmdline");
n = read_to_buf(status, buf);
if(n > 0) {
if(buf[n-1]=='\n')
buf[--n] = 0;
name = buf;
while(n) {
if(((unsigned char)*name) < ' ')
*name = ' ';
name++;
n--;
}
*name = 0;
if(buf[0])
curstatus.cmd = strdup(buf);
/* if NULL it work true also */
}
}
return memcpy(&ret_status, &curstatus, sizeof(procps_status_t));
}
}
int id_main(int argc, char **argv)
{
struct passwd *p;
uid_t uid;
gid_t gid;
unsigned long flags;
short status;
#ifdef CONFIG_SELINUX
security_context_t scontext;
#endif
/* Don't allow -n -r -nr -ug -rug -nug -rnug */
/* Don't allow more than one username */
bb_opt_complementally = "?1:?:u--g:g--u:r?ug:n?ug";
flags = bb_getopt_ulflags(argc, argv, "rnugZ");
/* This values could be overwritten later */
uid = geteuid();
gid = getegid();
if (flags & PRINT_REAL) {
uid = getuid();
gid = getgid();
}
if(argv[optind]) {
p=getpwnam(argv[optind]);
/* bb_xgetpwnam is needed because it exits on failure */
uid = bb_xgetpwnam(argv[optind]);
gid = p->pw_gid;
/* in this case PRINT_REAL is the same */
}
#ifdef CONFIG_SELINUX
if(flags & (JUST_GROUP | JUST_USER | JUST_CONTEXT )) {
#else
if(flags & (JUST_GROUP | JUST_USER )) {
#endif
/* JUST_GROUP and JUST_USER are mutually exclusive */
if(flags & NAME_NOT_NUMBER) {
/* bb_getpwuid and bb_getgrgid exit on failure so puts cannot segfault */
puts((flags & JUST_USER) ? bb_getpwuid(NULL, uid, -1 ) : bb_getgrgid(NULL, gid, -1 ));
} else {
if (flags & JUST_USER){
bb_printf("%u\n",uid);
}
if (flags & JUST_GROUP){
bb_printf("%u\n",gid);
}
}
#ifdef CONFIG_SELINUX
if(flags & JUST_CONTEXT){
if( !is_selinux_enabled() ) {
bb_error_msg_and_die("Sorry, --context (-Z) can be used only on "
"a selinux-enabled kernel.\n" );
}
if (argc - optind == 1){
bb_error_msg("cannot print security context when user specified");
bb_fflush_stdout_and_exit(EXIT_FAILURE);
}
if (getcon(&scontext)){
bb_error_msg("can't get process context");
bb_fflush_stdout_and_exit(EXIT_FAILURE);
}
bb_printf("%s\n", scontext);
}
#endif
/* exit */
bb_fflush_stdout_and_exit(EXIT_SUCCESS);
}
/* Print full info like GNU id */
/* bb_getpwuid doesn't exit on failure here */
status=printf_full(uid, bb_getpwuid(NULL, uid, 0), 'u');
putchar(' ');
/* bb_getgrgid doesn't exit on failure here */
status|=printf_full(gid, bb_getgrgid(NULL, gid, 0), 'g');
#ifdef CONFIG_SELINUX
if ( is_selinux_enabled() ) {
security_context_t mysid;
char context[80];
int len = sizeof(context);
getcon(&mysid);
context[0] = '\0';
if (mysid) {
len = strlen(mysid)+1;
safe_strncpy(context, mysid, len);
freecon(mysid);
}else{
safe_strncpy(context, "unknown",8);
}
bb_printf(" context=%s", context);
}
#endif
putchar('\n');
bb_fflush_stdout_and_exit(status);
}
