/*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
* Copyright (C) 1996
* David L. Nugent. All rights reserved.
*
"$FreeBSD$";
#endif /* not lint */
+#include <pwd.h>
+#include <grp.h>
+#include <libutil.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
-#include <sys/param.h>
+#include <err.h>
+#include <unistd.h>
#include "pwupd.h"
static FILE * pwd_fp = NULL;
+static int pwd_scanflag;
+static const char *pwd_filename;
void
vendpwent(void)
}
static struct passwd *
-vnextpwent(char const * nam, uid_t uid, int doclose)
+vnextpwent(char const *nam, uid_t uid, int doclose)
{
- struct passwd * pw = NULL;
- static char pwtmp[1024];
-
- strlcpy(pwtmp, getpwpath(_MASTERPASSWD), sizeof(pwtmp));
-
- if (pwd_fp != NULL || (pwd_fp = fopen(pwtmp, "r")) != NULL) {
- int done = 0;
-
- static struct passwd pwd;
-
- while (!done && fgets(pwtmp, sizeof pwtmp, pwd_fp) != NULL)
- {
- int i, quickout = 0;
- char * q;
- char * p = strchr(pwtmp, '\n');
-
- if (p == NULL) {
- while (fgets(pwtmp, sizeof pwtmp, pwd_fp) != NULL && strchr(pwtmp, '\n')==NULL)
- ; /* Skip long lines */
- continue;
- }
-
- /* skip comments & empty lines */
- if (*pwtmp =='\n' || *pwtmp == '#')
+ struct passwd *pw;
+ char *line;
+ size_t linecap;
+ ssize_t linelen;
+
+ pw = NULL;
+ line = NULL;
+ linecap = 0;
+
+ if (pwd_fp == NULL) {
+ if (geteuid() == 0) {
+ pwd_filename = _MASTERPASSWD;
+ pwd_scanflag = PWSCAN_MASTER;
+ } else {
+ pwd_filename = _PASSWD;
+ pwd_scanflag = 0;
+ }
+ pwd_fp = fopen(getpwpath(pwd_filename), "r");
+ }
+
+ if (pwd_fp != NULL) {
+ while ((linelen = getline(&line, &linecap, pwd_fp)) > 0) {
+ /* Skip comments and empty lines */
+ if (*line == '\n' || *line == '#')
continue;
-
- i = 0;
- q = p = pwtmp;
- bzero(&pwd, sizeof pwd);
- while (!quickout && (p = strsep(&q, ":\n")) != NULL) {
- switch (i++)
- {
- case 0: /* username */
- pwd.pw_name = p;
- if (nam) {
- if (strcmp(nam, p) == 0)
- done = 1;
- else
- quickout = 1;
- }
- break;
- case 1: /* password */
- pwd.pw_passwd = p;
- break;
- case 2: /* uid */
- pwd.pw_uid = atoi(p);
- if (uid != (uid_t)-1) {
- if (uid == pwd.pw_uid)
- done = 1;
- else
- quickout = 1;
- }
- break;
- case 3: /* gid */
- pwd.pw_gid = atoi(p);
- break;
- case 4: /* class */
- if (nam == NULL && uid == (uid_t)-1)
- done = 1;
- pwd.pw_class = p;
- break;
- case 5: /* change */
- pwd.pw_change = (time_t)atol(p);
- break;
- case 6: /* expire */
- pwd.pw_expire = (time_t)atol(p);
- break;
- case 7: /* gecos */
- pwd.pw_gecos = p;
- break;
- case 8: /* directory */
- pwd.pw_dir = p;
- break;
- case 9: /* shell */
- pwd.pw_shell = p;
- break;
- }
- }
- }
+ /* trim latest \n */
+ if (line[linelen - 1 ] == '\n')
+ line[linelen - 1] = '\0';
+ pw = pw_scan(line, pwd_scanflag);
+ if (pw == NULL)
+ errx(EXIT_FAILURE, "Invalid user entry in '%s':"
+ " '%s'", getpwpath(pwd_filename), line);
+ if (uid != (uid_t)-1) {
+ if (uid == pw->pw_uid)
+ break;
+ } else if (nam != NULL) {
+ if (strcmp(nam, pw->pw_name) == 0)
+ break;
+ } else
+ break;
+ free(pw);
+ pw = NULL;
+ }
if (doclose)
vendpwent();
- if (done && pwd.pw_name) {
- pw = &pwd;
-
- #define CKNULL(s) s = s ? s : ""
- CKNULL(pwd.pw_passwd);
- CKNULL(pwd.pw_class);
- CKNULL(pwd.pw_gecos);
- CKNULL(pwd.pw_dir);
- CKNULL(pwd.pw_shell);
- }
- }
- return pw;
+ }
+ free(line);
+
+ /*
+ * If we read the non-master passwd, some fields may not have been
+ * populated. Clean them up so that the output looks the same as that
+ * generated using getpwnam() which also inits them to these values.
+ */
+ if (!(pw->pw_fields & _PWF_CLASS))
+ pw->pw_class = "";
+ if (!(pw->pw_fields & _PWF_CHANGE))
+ pw->pw_change = 0;
+ if (!(pw->pw_fields & _PWF_EXPIRE))
+ pw->pw_expire = 0;
+
+ return (pw);
}
struct passwd *
return vnextpwent(nam, -1, 1);
}
-int vpwdb(char *arg, ...)
-{
- arg=arg;
- return 0;
-}
-
-
static FILE * grp_fp = NULL;
}
}
-RET_SETGRENT
+void
vsetgrent(void)
{
vendgrent();
-#if defined(__FreeBSD__)
- return 0;
-#endif
}
static struct group *
-vnextgrent(char const * nam, gid_t gid, int doclose)
+vnextgrent(char const *nam, gid_t gid, int doclose)
{
- struct group * gr = NULL;
-
- static char * grtmp = NULL;
- static int grlen = 0;
- static char ** mems = NULL;
- static int memlen = 0;
+ struct group *gr;
+ char *line;
+ size_t linecap;
+ ssize_t linelen;
- extendline(&grtmp, &grlen, MAXPATHLEN);
- strlcpy(grtmp, getgrpath(_GROUP), MAXPATHLEN);
+ gr = NULL;
+ line = NULL;
+ linecap = 0;
- if (grp_fp != NULL || (grp_fp = fopen(grtmp, "r")) != NULL) {
- int done = 0;
-
- static struct group grp;
-
- while (!done && fgets(grtmp, grlen, grp_fp) != NULL)
- {
- int i, quickout = 0;
- int mno = 0;
- char * q, * p;
- char * sep = ":\n";
-
- if ((p = strchr(grtmp, '\n')) == NULL) {
- int l;
- extendline(&grtmp, &grlen, grlen + PWBUFSZ);
- l = strlen(grtmp);
- if (fgets(grtmp + l, grlen - l, grp_fp) == NULL)
- break; /* No newline terminator on last line */
- }
+ if (grp_fp != NULL || (grp_fp = fopen(getgrpath(_GROUP), "r")) != NULL) {
+ while ((linelen = getline(&line, &linecap, grp_fp)) > 0) {
/* Skip comments and empty lines */
- if (*grtmp == '\n' || *grtmp == '#')
+ if (*line == '\n' || *line == '#')
continue;
- i = 0;
- q = p = grtmp;
- bzero(&grp, sizeof grp);
- extendarray(&mems, &memlen, 200);
- while (!quickout && (p = strsep(&q, sep)) != NULL) {
- switch (i++)
- {
- case 0: /* groupname */
- grp.gr_name = p;
- if (nam) {
- if (strcmp(nam, p) == 0)
- done = 1;
- else
- quickout = 1;
- }
- break;
- case 1: /* password */
- grp.gr_passwd = p;
+ /* trim latest \n */
+ if (line[linelen - 1 ] == '\n')
+ line[linelen - 1] = '\0';
+ gr = gr_scan(line);
+ if (gr == NULL)
+ errx(EXIT_FAILURE, "Invalid group entry in '%s':"
+ " '%s'", getgrpath(_GROUP), line);
+ if (gid != (gid_t)-1) {
+ if (gid == gr->gr_gid)
break;
- case 2: /* gid */
- grp.gr_gid = atoi(p);
- if (gid != (gid_t)-1) {
- if (gid == (gid_t)grp.gr_gid)
- done = 1;
- else
- quickout = 1;
- } else if (nam == NULL)
- done = 1;
+ } else if (nam != NULL) {
+ if (strcmp(nam, gr->gr_name) == 0)
break;
- case 3:
- q = p;
- sep = ",\n";
- break;
- default:
- if (*p) {
- extendarray(&mems, &memlen, mno + 2);
- mems[mno++] = p;
- }
- break;
- }
- }
- grp.gr_mem = mems;
- mems[mno] = NULL;
- }
+ } else
+ break;
+ free(gr);
+ gr = NULL;
+ }
if (doclose)
vendgrent();
- if (done && grp.gr_name) {
- gr = &grp;
-
- CKNULL(grp.gr_passwd);
- }
}
- return gr;
+ free(line);
+
+ return (gr);
}
struct group *
return vnextgrent(nam, -1, 1);
}
-int
-vgrdb(char *arg, ...)
-{
- arg=arg;
- return 0;
-}
-
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