--- /dev/null
+/*
+ * Copyright (c) 2005, 2008, 2010-2011 Todd C. Miller <Todd.Miller@courtesan.com>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * Trivial replacements for the libc get{gr,pw}{uid,nam}() routines
+ * for use by testsudoers in the sudo test harness.
+ * We need our own since many platforms don't provide set{pw,gr}file().
+ */
+
+#include <config.h>
+
+#include <sys/types.h>
+#include <sys/param.h>
+#include <stdio.h>
+#ifdef STDC_HEADERS
+# include <stdlib.h>
+# include <stddef.h>
+#else
+# ifdef HAVE_STDLIB_H
+# include <stdlib.h>
+# endif
+#endif /* STDC_HEADERS */
+#ifdef HAVE_STRING_H
+# if defined(HAVE_MEMORY_H) && !defined(STDC_HEADERS)
+# include <memory.h>
+# endif
+# include <string.h>
+#endif /* HAVE_STRING_H */
+#ifdef HAVE_STRINGS_H
+# include <strings.h>
+#endif /* HAVE_STRINGS_H */
+#include <fcntl.h>
+#include <limits.h>
+
+#include "tsgetgrpw.h"
+#include "sudoers.h"
+
+#ifndef LINE_MAX
+# define LINE_MAX 2048
+#endif
+
+#undef GRMEM_MAX
+#define GRMEM_MAX 200
+
+static FILE *pwf;
+static const char *pwfile = "/etc/passwd";
+static int pw_stayopen;
+
+static FILE *grf;
+static const char *grfile = "/etc/group";
+static int gr_stayopen;
+
+void setgrfile(const char *);
+void setgrent(void);
+void endgrent(void);
+struct group *getgrent(void);
+struct group *getgrnam(const char *);
+struct group *getgrgid(gid_t);
+
+void setpwfile(const char *);
+void setpwent(void);
+void endpwent(void);
+struct passwd *getpwent(void);
+struct passwd *getpwnam(const char *);
+struct passwd *getpwuid(uid_t);
+
+void
+setpwfile(const char *file)
+{
+ pwfile = file;
+ if (pwf != NULL)
+ endpwent();
+}
+
+void
+setpwent(void)
+{
+ if (pwf == NULL) {
+ pwf = fopen(pwfile, "r");
+ if (pwf != NULL)
+ fcntl(fileno(pwf), F_SETFD, FD_CLOEXEC);
+ } else {
+ rewind(pwf);
+ }
+ pw_stayopen = 1;
+}
+
+void
+endpwent(void)
+{
+ if (pwf != NULL) {
+ fclose(pwf);
+ pwf = NULL;
+ }
+ pw_stayopen = 0;
+}
+
+struct passwd *
+getpwent(void)
+{
+ static struct passwd pw;
+ static char pwbuf[LINE_MAX];
+ size_t len;
+ char *cp, *colon;
+
+ if ((colon = fgets(pwbuf, sizeof(pwbuf), pwf)) == NULL)
+ return NULL;
+
+ zero_bytes(&pw, sizeof(pw));
+ if ((colon = strchr(cp = colon, ':')) == NULL)
+ return NULL;
+ *colon++ = '\0';
+ pw.pw_name = cp;
+ if ((colon = strchr(cp = colon, ':')) == NULL)
+ return NULL;
+ *colon++ = '\0';
+ pw.pw_passwd = cp;
+ if ((colon = strchr(cp = colon, ':')) == NULL)
+ return NULL;
+ *colon++ = '\0';
+ pw.pw_uid = atoi(cp);
+ if ((colon = strchr(cp = colon, ':')) == NULL)
+ return NULL;
+ *colon++ = '\0';
+ pw.pw_gid = atoi(cp);
+ if ((colon = strchr(cp = colon, ':')) == NULL)
+ return NULL;
+ *colon++ = '\0';
+ pw.pw_gecos = cp;
+ if ((colon = strchr(cp = colon, ':')) == NULL)
+ return NULL;
+ *colon++ = '\0';
+ pw.pw_dir = cp;
+ pw.pw_shell = colon;
+ len = strlen(colon);
+ if (len > 0 && colon[len - 1] == '\n')
+ colon[len - 1] = '\0';
+ return &pw;
+}
+
+struct passwd *
+getpwnam(const char *name)
+{
+ struct passwd *pw;
+
+ if (pwf == NULL) {
+ if ((pwf = fopen(pwfile, "r")) == NULL)
+ return NULL;
+ fcntl(fileno(pwf), F_SETFD, FD_CLOEXEC);
+ } else {
+ rewind(pwf);
+ }
+ while ((pw = getpwent()) != NULL) {
+ if (strcmp(pw->pw_name, name) == 0)
+ break;
+ }
+ if (!pw_stayopen) {
+ fclose(pwf);
+ pwf = NULL;
+ }
+ return pw;
+}
+
+struct passwd *
+getpwuid(uid_t uid)
+{
+ struct passwd *pw;
+
+ if (pwf == NULL) {
+ if ((pwf = fopen(pwfile, "r")) == NULL)
+ return NULL;
+ fcntl(fileno(pwf), F_SETFD, FD_CLOEXEC);
+ } else {
+ rewind(pwf);
+ }
+ while ((pw = getpwent()) != NULL) {
+ if (pw->pw_uid == uid)
+ break;
+ }
+ if (!pw_stayopen) {
+ fclose(pwf);
+ pwf = NULL;
+ }
+ return pw;
+}
+
+void
+setgrfile(const char *file)
+{
+ grfile = file;
+ if (grf != NULL)
+ endgrent();
+}
+
+void
+setgrent(void)
+{
+ if (grf == NULL) {
+ grf = fopen(grfile, "r");
+ if (grf != NULL)
+ fcntl(fileno(grf), F_SETFD, FD_CLOEXEC);
+ } else {
+ rewind(grf);
+ }
+ gr_stayopen = 1;
+}
+
+void
+endgrent(void)
+{
+ if (grf != NULL) {
+ fclose(grf);
+ grf = NULL;
+ }
+ gr_stayopen = 0;
+}
+
+struct group *
+getgrent(void)
+{
+ static struct group gr;
+ static char grbuf[LINE_MAX], *gr_mem[GRMEM_MAX+1];
+ size_t len;
+ char *cp, *colon;
+ int n;
+
+ if ((colon = fgets(grbuf, sizeof(grbuf), grf)) == NULL)
+ return NULL;
+
+ zero_bytes(&gr, sizeof(gr));
+ if ((colon = strchr(cp = colon, ':')) == NULL)
+ return NULL;
+ *colon++ = '\0';
+ gr.gr_name = cp;
+ if ((colon = strchr(cp = colon, ':')) == NULL)
+ return NULL;
+ *colon++ = '\0';
+ gr.gr_passwd = cp;
+ if ((colon = strchr(cp = colon, ':')) == NULL)
+ return NULL;
+ *colon++ = '\0';
+ gr.gr_gid = atoi(cp);
+ len = strlen(colon);
+ if (len > 0 && colon[len - 1] == '\n')
+ colon[len - 1] = '\0';
+ if (*colon != '\0') {
+ gr.gr_mem = gr_mem;
+ cp = strtok(colon, ",");
+ for (n = 0; cp != NULL && n < GRMEM_MAX; n++) {
+ gr.gr_mem[n] = cp;
+ cp = strtok(NULL, ",");
+ }
+ gr.gr_mem[n++] = NULL;
+ } else
+ gr.gr_mem = NULL;
+ return &gr;
+}
+
+struct group *
+getgrnam(const char *name)
+{
+ struct group *gr;
+
+ if (grf == NULL) {
+ if ((grf = fopen(grfile, "r")) == NULL)
+ return NULL;
+ fcntl(fileno(grf), F_SETFD, FD_CLOEXEC);
+ } else {
+ rewind(grf);
+ }
+ while ((gr = getgrent()) != NULL) {
+ if (strcmp(gr->gr_name, name) == 0)
+ break;
+ }
+ if (!gr_stayopen) {
+ fclose(grf);
+ grf = NULL;
+ }
+ return gr;
+}
+
+struct group *
+getgrgid(gid_t gid)
+{
+ struct group *gr;
+
+ if (grf == NULL) {
+ if ((grf = fopen(grfile, "r")) == NULL)
+ return NULL;
+ fcntl(fileno(grf), F_SETFD, FD_CLOEXEC);
+ } else {
+ rewind(grf);
+ }
+ while ((gr = getgrent()) != NULL) {
+ if (gr->gr_gid == gid)
+ break;
+ }
+ if (!gr_stayopen) {
+ fclose(grf);
+ grf = NULL;
+ }
+ return gr;
+}
projects / debian / sudo / blobdiff