53 lines
1.1 KiB
C
53 lines
1.1 KiB
C
#include "../command.h"
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#include <grp.h>
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#include <pwd.h>
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COMMAND_EMPTY(user_id) {
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uid_t uid;
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gid_t gid, *groups;
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int ngroups, i;
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struct passwd* pw;
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struct group* ugr;
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uid = getuid();
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gid = getgid();
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pw = getpwuid(uid);
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if(pw == NULL){
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error("failed to fetch groups: %s", strerror(errno));
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}
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ngroups = 0;
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getgrouplist(pw->pw_name, pw->pw_gid, NULL, &ngroups);
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groups = malloc(sizeof(gid_t) * ngroups);
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getgrouplist(pw->pw_name, pw->pw_gid, groups, &ngroups);
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ugr = getgrgid(gid);
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printf("uid=%d(%s) gid=%d(%s) ",
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uid, ugr->gr_name, gid, ugr->gr_name);
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if (ngroups > 0) {
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printf("groups=");
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}
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for (i = 0; i < ngroups; i++){
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struct group* gr = getgrgid(groups[i]);
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if(gr == NULL) {
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free(groups);
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error("failed to fetch groups: %s", strerror(errno));
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}
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printf("%d(%s)", gr->gr_gid, gr->gr_name);
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if (i + 1 < ngroups) putchar(',');
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}
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printf("\b\n");
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free(groups);
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return EXIT_SUCCESS;
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}
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