#include "citadel_dirs.h"
#include "genstamp.h"
+/* These pipes are used to talk to the chkpwd daemon, which is forked during startup */
+int chkpwd_write_pipe[2];
+int chkpwd_read_pipe[2];
+
/*
* makeuserkey() - convert a username into the format used as a database key
- * (it's just the username converted into lower case)
+ * (it's just the username converted into lower case)
*/
static INLINE void makeuserkey(char *key, char *username) {
int i, len;
/*
* getuser() - retrieve named user into supplied buffer.
- * returns 0 on success
+ * returns 0 on success
*/
int getuser(struct ctdluser *usbuf, char name[])
{
/*
* getuserbynumber() - get user by number
- * returns 0 if user was found
+ * returns 0 if user was found
*
* WARNING: don't use this function unless you absolutely have to. It does
- * a sequential search and therefore is computationally expensive.
+ * a sequential search and therefore is computationally expensive.
*/
int getuserbynumber(struct ctdluser *usbuf, long int number)
{
/*
* getuserbyuid() - get user by system uid (for PAM mode authentication)
- * returns 0 if user was found
+ * returns 0 if user was found
*
* WARNING: don't use this function unless you absolutely have to. It does
- * a sequential search and therefore is computationally expensive.
+ * a sequential search and therefore is computationally expensive.
*/
int getuserbyuid(struct ctdluser *usbuf, uid_t number)
{
}
/*
- * Validate a password on the host unix system by calling the 'chkpwd' utility
+ * Validate a password on the host unix system by talking to the chkpwd daemon
*/
static int validpw(uid_t uid, const char *pass)
{
- pid_t pid;
- int status, pipev[2];
- char buf[24];
-
- if (pipe(pipev)) {
- lprintf(CTDL_ERR, "pipe failed (%s): denying host auth access for "
- "uid %ld\n", strerror(errno), (long)uid);
- return 0;
- }
- switch (pid = fork()) {
- case -1:
- lprintf(CTDL_ERR, "fork failed (%s): denying host auth access for "
- "uid %ld\n", strerror(errno), (long)uid);
- close(pipev[0]);
- close(pipev[1]);
- return 0;
-
- case 0:
- close(pipev[1]);
- if (dup2(pipev[0], 0) == -1) {
- perror("dup2");
- exit(1);
- }
- close(pipev[0]);
+ char buf[256];
- execl(file_chkpwd, file_chkpwd, NULL);
- perror(file_chkpwd);
- exit(1);
- }
-
- close(pipev[0]);
- write(pipev[1], buf,
- snprintf(buf, sizeof buf, "%lu\n", (unsigned long) uid));
- write(pipev[1], pass, strlen(pass));
- write(pipev[1], "\n", 1);
- close(pipev[1]);
-
- while (waitpid(pid, &status, 0) == -1)
- if (errno != EINTR) {
- lprintf(CTDL_ERR, "waitpid failed (%s): denying host auth "
- "access for uid %ld\n",
- strerror(errno), (long)uid);
- return 0;
- }
- if (WIFEXITED(status) && !WEXITSTATUS(status))
- return 1;
+ lprintf(CTDL_DEBUG, "Validating password for uid=%d using chkpwd...\n", uid);
+
+ begin_critical_section(S_CHKPWD);
+ snprintf(buf, sizeof buf, "%016d", uid);
+ write(chkpwd_write_pipe[1], buf, 16);
+ write(chkpwd_write_pipe[1], pass, 256);
+ read(chkpwd_read_pipe[0], buf, 4);
+ end_critical_section(S_CHKPWD);
+
+ if (!strncmp(buf, "PASS", 4)) {
+ lprintf(CTDL_DEBUG, "...pass\n");
+ return(1);
+ }
+ lprintf(CTDL_DEBUG, "...fail\n");
return 0;
}
+/*
+ * Start up the chkpwd daemon so validpw() has something to talk to
+ */
+void start_chkpwd_daemon(void) {
+ pid_t chkpwd_pid;
+ int i;
+
+ lprintf(CTDL_DEBUG, "Starting chkpwd daemon for host authentication mode\n");
+
+ if (pipe(chkpwd_write_pipe) != 0) {
+ lprintf(CTDL_EMERG, "Unable to create pipe for chkpwd daemon: %s\n", strerror(errno));
+ abort();
+ }
+ if (pipe(chkpwd_read_pipe) != 0) {
+ lprintf(CTDL_EMERG, "Unable to create pipe for chkpwd daemon: %s\n", strerror(errno));
+ abort();
+ }
+
+ chkpwd_pid = fork();
+ if (chkpwd_pid < 0) {
+ lprintf(CTDL_EMERG, "Unable to fork chkpwd daemon: %s\n", strerror(errno));
+ abort();
+ }
+ if (chkpwd_pid == 0) {
+ lprintf(CTDL_DEBUG, "Now calling dup2() write\n");
+ dup2(chkpwd_write_pipe[0], 0);
+ lprintf(CTDL_DEBUG, "Now calling dup2() write\n");
+ dup2(chkpwd_read_pipe[1], 1);
+ lprintf(CTDL_DEBUG, "Now closing stuff\n");
+ for (i=2; i<256; ++i) close(i);
+ lprintf(CTDL_DEBUG, "Now calling execl(%s)\n", file_chkpwd);
+ execl(file_chkpwd, file_chkpwd, NULL);
+ lprintf(CTDL_EMERG, "Unable to exec chkpwd daemon: %s\n", strerror(errno));
+ abort();
+ exit(errno);
+ }
+}
+
+
void do_login()
{
(CC->logged_in) = 1;
MailboxName(mailboxname, sizeof mailboxname, &usbuf, USERCONFIGROOM);
create_room(mailboxname, 5, "", 0, 1, 1, VIEW_BBS);
- if (lgetroom(&qrbuf, mailboxname) == 0) {
- qrbuf.QRflags2 |= QR2_SYSTEM;
- lputroom(&qrbuf);
- }
+ if (lgetroom(&qrbuf, mailboxname) == 0) {
+ qrbuf.QRflags2 |= QR2_SYSTEM;
+ lputroom(&qrbuf);
+ }
/* Perform any create functions registered by server extensions */
PerformUserHooks(&usbuf, EVT_NEWUSER);
/* access granted */
} else {
/* access denied */
- cprintf("%d Higher access or room ownership required.\n",
- ERROR + HIGHER_ACCESS_REQUIRED);
- return;
- }
+ cprintf("%d Higher access or room ownership required.\n",
+ ERROR + HIGHER_ACCESS_REQUIRED);
+ return;
+ }
if (!strncasecmp(CC->room.QRname, config.c_baseroom,
ROOMNAMELEN)) {
*/
int InitialMailCheck()
{
- int num_newmsgs = 0;
- int a;
- char mailboxname[ROOMNAMELEN];
- struct ctdlroom mailbox;
- struct visit vbuf;
- struct cdbdata *cdbfr;
- long *msglist = NULL;
- int num_msgs = 0;
-
- MailboxName(mailboxname, sizeof mailboxname, &CC->user, MAILROOM);
- if (getroom(&mailbox, mailboxname) != 0)
- return (0);
- CtdlGetRelationship(&vbuf, &CC->user, &mailbox);
-
- cdbfr = cdb_fetch(CDB_MSGLISTS, &mailbox.QRnumber, sizeof(long));
-
- if (cdbfr != NULL) {
- msglist = malloc(cdbfr->len);
- memcpy(msglist, cdbfr->ptr, cdbfr->len);
- num_msgs = cdbfr->len / sizeof(long);
- cdb_free(cdbfr);
- }
- if (num_msgs > 0)
- for (a = 0; a < num_msgs; ++a) {
- if (msglist[a] > 0L) {
- if (msglist[a] > vbuf.v_lastseen) {
- ++num_newmsgs;
- }
- }
- }
- if (msglist != NULL)
- free(msglist);
-
- return (num_newmsgs);
+ int num_newmsgs = 0;
+ int a;
+ char mailboxname[ROOMNAMELEN];
+ struct ctdlroom mailbox;
+ struct visit vbuf;
+ struct cdbdata *cdbfr;
+ long *msglist = NULL;
+ int num_msgs = 0;
+
+ MailboxName(mailboxname, sizeof mailboxname, &CC->user, MAILROOM);
+ if (getroom(&mailbox, mailboxname) != 0)
+ return (0);
+ CtdlGetRelationship(&vbuf, &CC->user, &mailbox);
+
+ cdbfr = cdb_fetch(CDB_MSGLISTS, &mailbox.QRnumber, sizeof(long));
+
+ if (cdbfr != NULL) {
+ msglist = malloc(cdbfr->len);
+ memcpy(msglist, cdbfr->ptr, cdbfr->len);
+ num_msgs = cdbfr->len / sizeof(long);
+ cdb_free(cdbfr);
+ }
+ if (num_msgs > 0)
+ for (a = 0; a < num_msgs; ++a) {
+ if (msglist[a] > 0L) {
+ if (msglist[a] > vbuf.v_lastseen) {
+ ++num_newmsgs;
+ }
+ }
+ }
+ if (msglist != NULL)
+ free(msglist);
+
+ return (num_newmsgs);
}
projects / citadel.git / blobdiff