157 lines
4.1 KiB
C
157 lines
4.1 KiB
C
#include <stdio.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/acl.h>
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#include <dirent.h>
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#include <pwd.h>
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#include <fcntl.h>
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#include "homedir.h"
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#include "util.h"
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#include "config.h"
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static int set_acl(char *dir, char *acl_text, acl_type_t type) {
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acl_t acl = acl_from_text(acl_text);
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if (acl == (acl_t)NULL) {
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errorpe("acl_from_text: %s", acl_text);
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return -1;
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}
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if (acl_set_file(dir, type, acl) != 0) {
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errorpe("acl_set_file: %s %s 0x%X %p", acl_text, dir, (int)type, (void*)acl);
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acl_free(acl);
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return -1;
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}
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acl_free(acl);
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return 0;
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}
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int ceo_create_home(char *homedir, char *skel, uid_t uid, gid_t gid, char *access_acl, char *default_acl, char *email) {
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int mask;
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DIR *skeldir;
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struct dirent *skelent;
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mask = umask(0);
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if (mkdir(homedir, 0755)) {
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errorpe("failed to create %s", homedir);
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return -1;
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}
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if (access_acl && set_acl(homedir, access_acl, ACL_TYPE_ACCESS) != 0)
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return -1;
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if (default_acl && set_acl(homedir, default_acl, ACL_TYPE_DEFAULT) != 0)
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return -1;
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skeldir = opendir(skel);
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if (!skeldir) {
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errorpe("failed to open %s", skel);
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return -1;
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}
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while ((skelent = readdir(skeldir))) {
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struct stat sb;
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char src[PATH_MAX], dest[PATH_MAX];
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if (!strcmp(skelent->d_name, ".") || !strcmp(skelent->d_name, ".."))
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continue;
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snprintf(src, sizeof(src), "%s/%s", skel, skelent->d_name);
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snprintf(dest, sizeof(dest), "%s/%s", homedir, skelent->d_name);
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lstat(src, &sb);
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if (sb.st_uid || sb.st_gid) {
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warn("not creating %s due to ownership", dest);
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continue;
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}
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if (S_ISREG(sb.st_mode)) {
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int bytes;
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char buf[4096];
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int srcfd = open(src, O_RDONLY);
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if (srcfd == -1) {
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warnpe("open: %s", src);
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continue;
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}
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int destfd = open(dest, O_WRONLY|O_CREAT|O_EXCL, sb.st_mode & 0777);
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if (destfd == -1) {
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warnpe("open: %s", dest);
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close(srcfd);
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continue;
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}
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for (;;) {
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bytes = read(srcfd, buf, sizeof(buf));
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if (!bytes)
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break;
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if (bytes < 0) {
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warnpe("read");
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break;
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}
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if (write(destfd, buf, bytes) < 0) {
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warnpe("write");
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break;
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}
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}
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if (fchown(destfd, uid, gid))
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errorpe("chown: %s", dest);
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close(srcfd);
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close(destfd);
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} else if (S_ISDIR(sb.st_mode)) {
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if (mkdir(dest, sb.st_mode & 0777)) {
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warnpe("mkdir: %s", dest);
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continue;
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}
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if (chown(dest, uid, gid))
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errorpe("chown: %s", dest);
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} else if (S_ISLNK(sb.st_mode)) {
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char lnkdest[PATH_MAX];
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int bytes;
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bytes = readlink(src, lnkdest, sizeof(lnkdest));
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lnkdest[bytes] = '\0';
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if (bytes == -1) {
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warnpe("readlink: %s", src);
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continue;
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}
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if (symlink(lnkdest, dest)) {
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warnpe("symlink: %s", dest);
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continue;
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}
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if (lchown(dest, uid, gid))
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errorpe("lchown: %s", dest);
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} else {
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warn("not creating %s", dest);
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}
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}
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closedir(skeldir);
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if (email && strlen(email) >0) {
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char dest[PATH_MAX];
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snprintf(dest, sizeof(dest), "%s/%s", homedir, ".forward");
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int destfd = open(dest, O_WRONLY|O_CREAT|O_EXCL, 0644);
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if (write(destfd, email, sizeof(char)*strlen(email)) < 0) {
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warnpe ("write");
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}
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if (fchown(destfd, uid, gid))
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errorpe("chown: %s", dest);
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close(destfd);
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}
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if (chown(homedir, uid, gid)) {
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errorpe("failed to chown %s", homedir);
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return -1;
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}
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umask(mask);
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return 0;
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}
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