BOOL map_username(char *user)
{
static BOOL initialised=False;
static fstring last_from,last_to;
FILE *f;
char *mapfile = lp_username_map();
char *s;
pstring buf;
BOOL mapped_user = False;
if (!*user)
return False;
if (!*mapfile)
return False;
if (!initialised) {
*last_from = *last_to = 0;
initialised = True;
}
if (strequal(user,last_to))
return False;
if (strequal(user,last_from)) {
DEBUG(3,("Mapped user %s to %s\n",user,last_to));
fstrcpy(user,last_to);
return True;
}
f = sys_fopen(mapfile,"r");
if (!f) {
DEBUG(0,("can't open username map %s\n",mapfile));
return False;
}
DEBUG(4,("Scanning username map %s\n",mapfile));
while((s=fgets_slash(buf,sizeof(buf),f))!=NULL) {
char *unixname = s;
char *dosname = strchr(unixname,'=');
BOOL return_if_mapped = False;
if (!dosname)
continue;
*dosname++ = 0;
while (isspace(*unixname))
unixname++;
if ('!' == *unixname) {
return_if_mapped = True;
unixname++;
while (*unixname && isspace(*unixname))
unixname++;
}
if (!*unixname || strchr("#;",*unixname))
continue;
{
int l = strlen(unixname);
while (l && isspace(unixname[l-1])) {
unixname[l-1] = 0;
l--;
}
}
if (strchr(dosname,'*') || user_in_list(user,dosname)) {
DEBUG(3,("Mapped user %s to %s\n",user,unixname));
mapped_user = True;
fstrcpy(last_from,user);
sscanf(unixname,"%s",user);
fstrcpy(last_to,user);
if(return_if_mapped) {
fclose(f);
return True;
}
}
}
fclose(f);
/*
* Setup the last_from and last_to as an optimization so
* that we don't scan the file again for the same user.
*/
fstrcpy(last_from,user);
fstrcpy(last_to,user);
return mapped_user;
}
bool map_username(TALLOC_CTX *ctx, const char *user_in, char **p_user_out)
{
XFILE *f;
char *mapfile = lp_username_map(talloc_tos());
char *s;
char buf[512];
bool mapped_user = False;
char *cmd = lp_username_map_script(talloc_tos());
*p_user_out = NULL;
if (!user_in)
return false;
/* Initially make a copy of the incoming name. */
*p_user_out = talloc_strdup(ctx, user_in);
if (!*p_user_out) {
return false;
}
if (strequal(user_in,get_last_to()))
return false;
if (strequal(user_in,get_last_from())) {
DEBUG(3,("Mapped user %s to %s\n",user_in,get_last_to()));
TALLOC_FREE(*p_user_out);
*p_user_out = talloc_strdup(ctx, get_last_to());
return true;
}
if (fetch_map_from_gencache(ctx, user_in, p_user_out)) {
return true;
}
/* first try the username map script */
if ( *cmd ) {
char **qlines;
char *command = NULL;
int numlines, ret, fd;
command = talloc_asprintf(ctx,
"%s \"%s\"",
cmd,
user_in);
if (!command) {
return false;
}
DEBUG(10,("Running [%s]\n", command));
ret = smbrun(command, &fd);
DEBUGADD(10,("returned [%d]\n", ret));
TALLOC_FREE(command);
if ( ret != 0 ) {
if (fd != -1)
close(fd);
return False;
}
numlines = 0;
qlines = fd_lines_load(fd, &numlines, 0, ctx);
DEBUGADD(10,("Lines returned = [%d]\n", numlines));
close(fd);
/* should be either no lines or a single line with the mapped username */
if (numlines && qlines) {
DEBUG(3,("Mapped user %s to %s\n", user_in, qlines[0] ));
set_last_from_to(user_in, qlines[0]);
store_map_in_gencache(ctx, user_in, qlines[0]);
TALLOC_FREE(*p_user_out);
*p_user_out = talloc_strdup(ctx, qlines[0]);
if (!*p_user_out) {
return false;
}
}
TALLOC_FREE(qlines);
return numlines != 0;
}
/* ok. let's try the mapfile */
if (!*mapfile)
return False;
f = x_fopen(mapfile,O_RDONLY, 0);
if (!f) {
DEBUG(0,("can't open username map %s. Error %s\n",mapfile, strerror(errno) ));
return False;
}
DEBUG(4,("Scanning username map %s\n",mapfile));
while((s=fgets_slash(buf,sizeof(buf),f))!=NULL) {
char *unixname = s;
char *dosname = strchr_m(unixname,'=');
char **dosuserlist;
bool return_if_mapped = False;
if (!dosname)
continue;
*dosname++ = 0;
unixname = skip_space(unixname);
if ('!' == *unixname) {
return_if_mapped = True;
unixname = skip_space(unixname+1);
}
if (!*unixname || strchr_m("#;",*unixname))
continue;
{
int l = strlen(unixname);
while (l && isspace((int)unixname[l-1])) {
unixname[l-1] = 0;
l--;
}
}
/* skip lines like 'user = '******'*') ||
user_in_list(ctx, user_in, (const char **)dosuserlist)) {
DEBUG(3,("Mapped user %s to %s\n",user_in,unixname));
mapped_user = True;
set_last_from_to(user_in, unixname);
store_map_in_gencache(ctx, user_in, unixname);
TALLOC_FREE(*p_user_out);
*p_user_out = talloc_strdup(ctx, unixname);
if (!*p_user_out) {
TALLOC_FREE(dosuserlist);
x_fclose(f);
return false;
}
if ( return_if_mapped ) {
TALLOC_FREE(dosuserlist);
x_fclose(f);
return True;
}
}
TALLOC_FREE(dosuserlist);
}
x_fclose(f);
/*
* If we didn't successfully map a user in the loop above,
* setup the last_from and last_to as an optimization so
* that we don't scan the file again for the same user.
*/
if (!mapped_user) {
DEBUG(8, ("The user '%s' has no mapping. "
"Skip it next time.\n", user_in));
set_last_from_to(user_in, user_in);
store_map_in_gencache(ctx, user_in, user_in);
}
return mapped_user;
}
