*
* Copyright (C) 1996 Andrew Tridgell
* Copyright (C) 1996 Paul Mackerras
- * Copyright (C) 2004-2007 Wayne Davison
+ * Copyright (C) 2004-2009 Wayne Davison
*
* This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
+ * with this program; if not, visit the http://fsf.org website.
*/
/* If the source username/group does not exist on the target then use
* are special. */
#include "rsync.h"
+#include "ifuncs.h"
+#include "itypes.h"
#include "io.h"
+extern int am_root;
+extern int preserve_uid;
+extern int preserve_gid;
+extern int preserve_acls;
+extern int numeric_ids;
+extern gid_t our_gid;
+extern char *usermap;
+extern char *groupmap;
+
#ifdef HAVE_GETGROUPS
# ifndef GETGROUPS_T
# define GETGROUPS_T gid_t
# endif
#endif
-extern int verbose;
-extern int am_root;
-extern int preserve_uid;
-extern int preserve_gid;
-extern int preserve_acls;
-extern int numeric_ids;
+#define NFLAGS_WILD_NAME_MATCH (1<<0)
+#define NFLAGS_NAME_MATCH (1<<1)
struct idlist {
struct idlist *next;
- int id, id2;
- char *name;
+ const char *name;
+ id_t id, id2;
+ uint16 flags;
};
-static struct idlist *uidlist;
-static struct idlist *gidlist;
+static struct idlist *uidlist, *uidmap;
+static struct idlist *gidlist, *gidmap;
+
+static id_t id_parse(const char *num_str)
+{
+ id_t tmp, num = 0;
+ const char *cp = num_str;
+
+ while (*cp) {
+ if (!isDigit(cp)) {
+ invalid_num:
+ rprintf(FERROR, "Invalid ID number: %s\n", num_str);
+ exit_cleanup(RERR_SYNTAX);
+ }
+ tmp = num * 10 + *cp++ - '0';
+ if (tmp < num)
+ goto invalid_num;
+ num = tmp;
+ }
+
+ return num;
+}
-static struct idlist *add_to_list(struct idlist **root, int id, char *name,
- int id2)
+static struct idlist *add_to_list(struct idlist **root, id_t id, const char *name,
+ id_t id2, uint16 flags)
{
struct idlist *node = new(struct idlist);
if (!node)
node->name = name;
node->id = id;
node->id2 = id2;
+ node->flags = flags;
*root = node;
return node;
}
/* turn a uid into a user name */
-static char *uid_to_name(uid_t uid)
+char *uid_to_user(uid_t uid)
{
struct passwd *pass = getpwuid(uid);
if (pass)
}
/* turn a gid into a group name */
-static char *gid_to_name(gid_t gid)
+char *gid_to_group(gid_t gid)
{
struct group *grp = getgrgid(gid);
if (grp)
return NULL;
}
-static uid_t map_uid(uid_t id, char *name)
+/* Parse a user name or (optionally) a number into a uid */
+int user_to_uid(const char *name, uid_t *uid_p, BOOL num_ok)
{
- uid_t uid;
- if (id != 0 && name_to_uid(name, &uid))
- return uid;
- return id;
+ struct passwd *pass;
+ if (!name || !*name)
+ return 0;
+ if (num_ok && name[strspn(name, "0123456789")] == '\0') {
+ *uid_p = id_parse(name);
+ return 1;
+ }
+ if (!(pass = getpwnam(name)))
+ return 0;
+ *uid_p = pass->pw_uid;
+ return 1;
}
-static gid_t map_gid(gid_t id, char *name)
+/* Parse a group name or (optionally) a number into a gid */
+int group_to_gid(const char *name, gid_t *gid_p, BOOL num_ok)
{
- gid_t gid;
- if (id != 0 && name_to_gid(name, &gid))
- return gid;
- return id;
+ struct group *grp;
+ if (!name || !*name)
+ return 0;
+ if (num_ok && name[strspn(name, "0123456789")] == '\0') {
+ *gid_p = id_parse(name);
+ return 1;
+ }
+ if (!(grp = getgrnam(name)))
+ return 0;
+ *gid_p = grp->gr_gid;
+ return 1;
}
static int is_in_group(gid_t gid)
{
#ifdef HAVE_GETGROUPS
- static gid_t last_in = GID_NONE, last_out;
- static int ngroups = -2;
+ static gid_t last_in;
+ static int ngroups = -2, last_out = -1;
static GETGROUPS_T *gidset;
int n;
- if (gid == last_in)
+ if (gid == last_in && last_out >= 0)
return last_out;
if (ngroups < -1) {
- gid_t mygid = MY_GID();
if ((ngroups = getgroups(0, NULL)) < 0)
ngroups = 0;
gidset = new_array(GETGROUPS_T, ngroups+1);
ngroups = getgroups(ngroups, gidset);
/* The default gid might not be in the list on some systems. */
for (n = 0; n < ngroups; n++) {
- if (gidset[n] == mygid)
+ if (gidset[n] == our_gid)
break;
}
if (n == ngroups)
- gidset[ngroups++] = mygid;
- if (verbose > 3) {
+ gidset[ngroups++] = our_gid;
+ if (DEBUG_GTE(OWN, 2)) {
int pos;
char *gidbuf = new_array(char, ngroups*21+32);
if (!gidbuf)
return last_out = 0;
#else
- static gid_t mygid = GID_NONE;
- if (mygid == GID_NONE) {
- mygid = MY_GID();
- if (verbose > 3)
- rprintf(FINFO, "process has gid %d\n", (int)mygid);
- }
- return gid == mygid;
+ return gid == our_gid;
#endif
}
-/* Add a uid to the list of uids. Only called on receiving side. */
-static uid_t recv_add_uid(uid_t id, char *name)
+/* Add a uid/gid to its list of ids. Only called on receiving side. */
+static struct idlist *recv_add_id(struct idlist **idlist_ptr, struct idlist *idmap,
+ id_t id, const char *name)
{
- uid_t id2 = name ? map_uid(id, name) : id;
struct idlist *node;
+ int flag;
+ id_t id2;
- node = add_to_list(&uidlist, (int)id, name, (int)id2);
+ if (!name)
+ name = "";
- if (verbose > 3) {
- rprintf(FINFO, "uid %d(%s) maps to %d\n",
- (int)id, name ? name : "", (int)id2);
+ for (node = idmap; node; node = node->next) {
+ if (node->flags & NFLAGS_WILD_NAME_MATCH) {
+ if (!wildmatch(node->name, name))
+ continue;
+ } else if (node->flags & NFLAGS_NAME_MATCH) {
+ if (strcmp(node->name, name) != 0)
+ continue;
+ } else if (node->name) {
+ if (id < node->id || (unsigned long)id > (unsigned long)node->name)
+ continue;
+ } else {
+ if (node->id != id)
+ continue;
+ }
+ break;
}
+ if (node)
+ id2 = node->id2;
+ else if (*name && id) {
+ if (idlist_ptr == &uidlist) {
+ uid_t uid;
+ id2 = user_to_uid(name, &uid, False) ? uid : id;
+ } else {
+ gid_t gid;
+ id2 = group_to_gid(name, &gid, False) ? gid : id;
+ }
+ } else
+ id2 = id;
- return id2;
-}
-
-/* Add a gid to the list of gids. Only called on receiving side. */
-static gid_t recv_add_gid(gid_t id, char *name)
-{
- gid_t id2 = name ? map_gid(id, name) : id;
- struct idlist *node;
-
- if (!am_root && !is_in_group(id2))
- id2 = GID_NONE;
- node = add_to_list(&gidlist, (int)id, name, (int)id2);
+ flag = idlist_ptr == &gidlist && !am_root && !is_in_group(id2) ? FLAG_SKIP_GROUP : 0;
+ node = add_to_list(idlist_ptr, id, *name ? name : NULL, id2, flag);
- if (verbose > 3) {
- rprintf(FINFO, "gid %d(%s) maps to %d\n",
- (int)id, name ? name : "", (int)id2);
+ if (DEBUG_GTE(OWN, 2)) {
+ rprintf(FINFO, "%sid %u(%s) maps to %u\n",
+ idlist_ptr == &uidlist ? "u" : "g",
+ (unsigned)id, name, (unsigned)id2);
}
- return id2;
+ return node;
}
/* this function is a definate candidate for a faster algorithm */
uid_t match_uid(uid_t uid)
{
- static uid_t last_in, last_out;
+ static struct idlist *last = NULL;
struct idlist *list;
- if (uid == 0)
- return 0;
-
- if (uid == last_in)
- return last_out;
-
- last_in = uid;
+ if (last && uid == last->id)
+ return last->id2;
for (list = uidlist; list; list = list->next) {
- if (list->id == (int)uid)
- return last_out = (uid_t)list->id2;
+ if (list->id == uid)
+ break;
}
- return last_out = uid;
+ if (!list)
+ list = recv_add_id(&uidlist, uidmap, uid, NULL);
+ last = list;
+
+ return list->id2;
}
-gid_t match_gid(gid_t gid)
+gid_t match_gid(gid_t gid, uint16 *flags_ptr)
{
- static gid_t last_in = GID_NONE, last_out = GID_NONE;
+ static struct idlist *last = NULL;
struct idlist *list;
- if (gid == GID_NONE)
- return GID_NONE;
-
- if (gid == last_in)
- return last_out;
-
- last_in = gid;
-
- for (list = gidlist; list; list = list->next) {
- if (list->id == (int)gid)
- return last_out = (gid_t)list->id2;
+ if (last && gid == last->id)
+ list = last;
+ else {
+ for (list = gidlist; list; list = list->next) {
+ if (list->id == gid)
+ break;
+ }
+ if (!list)
+ list = recv_add_id(&gidlist, gidmap, gid, NULL);
+ last = list;
}
- return last_out = recv_add_gid(gid, NULL);
+ if (flags_ptr && list->flags & FLAG_SKIP_GROUP)
+ *flags_ptr |= FLAG_SKIP_GROUP;
+ return list->id2;
}
/* Add a uid to the list of uids. Only called on sending side. */
-char *add_uid(uid_t uid)
+const char *add_uid(uid_t uid)
{
struct idlist *list;
struct idlist *node;
return NULL;
for (list = uidlist; list; list = list->next) {
- if (list->id == (int)uid)
+ if (list->id == uid)
return NULL;
}
- node = add_to_list(&uidlist, (int)uid, uid_to_name(uid), 0);
+ node = add_to_list(&uidlist, uid, uid_to_user(uid), 0, 0);
return node->name;
}
/* Add a gid to the list of gids. Only called on sending side. */
-char *add_gid(gid_t gid)
+const char *add_gid(gid_t gid)
{
struct idlist *list;
struct idlist *node;
return NULL;
for (list = gidlist; list; list = list->next) {
- if (list->id == (int)gid)
+ if (list->id == gid)
return NULL;
}
- node = add_to_list(&gidlist, (int)gid, gid_to_name(gid), 0);
+ node = add_to_list(&gidlist, gid, gid_to_group(gid), 0, 0);
return node->name;
}
/* send a complete uid/gid mapping to the peer */
-void send_uid_list(int f)
+void send_id_list(int f)
{
struct idlist *list;
uid_t recv_user_name(int f, uid_t uid)
{
+ struct idlist *node;
int len = read_byte(f);
char *name = new_array(char, len+1);
if (!name)
out_of_memory("recv_user_name");
read_sbuf(f, name, len);
- return recv_add_uid(uid, name); /* node keeps name's memory */
+ if (numeric_ids < 0) {
+ free(name);
+ name = NULL;
+ }
+ node = recv_add_id(&uidlist, uidmap, uid, name); /* node keeps name's memory */
+ return node->id2;
}
-gid_t recv_group_name(int f, gid_t gid)
+gid_t recv_group_name(int f, gid_t gid, uint16 *flags_ptr)
{
+ struct idlist *node;
int len = read_byte(f);
char *name = new_array(char, len+1);
if (!name)
out_of_memory("recv_group_name");
read_sbuf(f, name, len);
- return recv_add_gid(gid, name); /* node keeps name's memory */
+ if (numeric_ids < 0) {
+ free(name);
+ name = NULL;
+ }
+ node = recv_add_id(&gidlist, gidmap, gid, name); /* node keeps name's memory */
+ if (flags_ptr && node->flags & FLAG_SKIP_GROUP)
+ *flags_ptr |= FLAG_SKIP_GROUP;
+ return node->id2;
}
/* recv a complete uid/gid mapping from the peer and map the uid/gid
* in the file list to local names */
-void recv_uid_list(int f, struct file_list *flist)
+void recv_id_list(int f, struct file_list *flist)
{
- int id, i;
+ id_t id;
+ int i;
- if ((preserve_uid || preserve_acls) && !numeric_ids) {
+ if ((preserve_uid || preserve_acls) && numeric_ids <= 0) {
/* read the uid list */
while ((id = read_varint30(f)) != 0)
- recv_user_name(f, (uid_t)id);
+ recv_user_name(f, id);
}
- if ((preserve_gid || preserve_acls) && !numeric_ids) {
+ if ((preserve_gid || preserve_acls) && numeric_ids <= 0) {
/* read the gid list */
while ((id = read_varint30(f)) != 0)
- recv_group_name(f, (gid_t)id);
+ recv_group_name(f, id, NULL);
}
/* Now convert all the uids/gids from sender values to our values. */
#ifdef SUPPORT_ACLS
- if (preserve_acls && !numeric_ids)
+ if (preserve_acls && (!numeric_ids || usermap || groupmap))
match_acl_ids();
#endif
- if (am_root && preserve_uid && !numeric_ids) {
- for (i = 0; i < flist->count; i++)
- F_OWNER(flist->files[i]) = match_uid(F_UID(flist->files[i]));
+ if (am_root && preserve_uid && (!numeric_ids || usermap)) {
+ for (i = 0; i < flist->used; i++)
+ F_OWNER(flist->files[i]) = match_uid(F_OWNER(flist->files[i]));
+ }
+ if (preserve_gid && (!am_root || !numeric_ids || groupmap)) {
+ for (i = 0; i < flist->used; i++) {
+ F_GROUP(flist->files[i]) = match_gid(F_GROUP(flist->files[i]),
+ &flist->files[i]->flags);
+ }
+ }
+}
+
+void parse_name_map(char *map, BOOL usernames)
+{
+ struct idlist **idmap_ptr = usernames ? &uidmap : &gidmap;
+ struct idlist **idlist_ptr = usernames ? &uidlist : &gidlist;
+ char *colon, *end, *name, *cp = map + strlen(map);
+ id_t id1;
+ uint16 flags;
+
+ /* Parse the list in reverse, so the order in the struct is right. */
+ while (1) {
+ end = cp;
+ while (cp > map && cp[-1] != ',') cp--;
+ if (!(colon = strchr(cp, ':'))) {
+ rprintf(FERROR, "No colon found in --%smap: %s\n",
+ usernames ? "user" : "group", cp);
+ exit_cleanup(RERR_SYNTAX);
+ }
+ if (!colon[1]) {
+ rprintf(FERROR, "No name found after colon --%smap: %s\n",
+ usernames ? "user" : "group", cp);
+ exit_cleanup(RERR_SYNTAX);
+ }
+ *colon = '\0';
+
+ if (isDigit(cp)) {
+ char *dash = strchr(cp, '-');
+ if (strspn(cp, "0123456789-") != (size_t)(colon - cp)
+ || (dash && (!dash[1] || strchr(dash+1, '-')))) {
+ rprintf(FERROR, "Invalid number in --%smap: %s\n",
+ usernames ? "user" : "group", cp);
+ exit_cleanup(RERR_SYNTAX);
+ }
+ if (dash)
+ name = (char *)id_parse(dash+1);
+ else
+ name = (char *)0;
+ flags = 0;
+ id1 = id_parse(cp);
+ } else if (strpbrk(cp, "*[?")) {
+ flags = NFLAGS_WILD_NAME_MATCH;
+ name = cp;
+ id1 = 0;
+ } else {
+ flags = NFLAGS_NAME_MATCH;
+ name = cp;
+ id1 = 0;
+ }
+
+ if (usernames) {
+ uid_t uid;
+ if (user_to_uid(colon+1, &uid, True))
+ add_to_list(idmap_ptr, id1, name, uid, flags);
+ else {
+ rprintf(FERROR,
+ "Unknown --usermap name on receiver: %s\n",
+ colon+1);
+ }
+ } else {
+ gid_t gid;
+ if (group_to_gid(colon+1, &gid, True))
+ add_to_list(idmap_ptr, id1, name, gid, flags);
+ else {
+ rprintf(FERROR,
+ "Unknown --groupmap name on receiver: %s\n",
+ colon+1);
+ }
+ }
+
+ if (cp == map)
+ break;
+
+ *--cp = '\0'; /* replace comma */
}
- if (preserve_gid && (!am_root || !numeric_ids)) {
- for (i = 0; i < flist->count; i++)
- F_GROUP(flist->files[i]) = match_gid(F_GID(flist->files[i]));
+
+ /* The 0 user/group doesn't get its name sent, so add it explicitly. */
+ recv_add_id(idlist_ptr, *idmap_ptr, 0,
+ numeric_ids ? NULL : usernames ? uid_to_user(0) : gid_to_group(0));
+}
+
+#ifdef HAVE_GETGROUPLIST
+const char *getallgroups(uid_t uid, gid_t *gid_list, int *size_ptr)
+{
+ struct passwd *pw;
+ if ((pw = getpwuid(uid)) == NULL)
+ return "getpwuid failed";
+ /* Get all the process's groups, with the pw_gid group first. */
+ if (getgrouplist(pw->pw_name, pw->pw_gid, gid_list, size_ptr) < 0)
+ return "getgrouplist failed";
+ /* Paranoia: is the default group not first in the list? */
+ if (gid_list[0] != pw->pw_gid) {
+ int j;
+ for (j = 0; j < *size_ptr; j++) {
+ if (gid_list[j] == pw->pw_gid) {
+ gid_list[j] = gid_list[0];
+ gid_list[0] = pw->pw_gid;
+ break;
+ }
+ }
}
+ return NULL;
}
+#endif
git.samba.org / rsync.git / blobdiff