mail-error.c revision c6421c8849017f4db934db1fa075d786bcb794c9
/* Copyright (c) 2007-2009 Dovecot authors, see the included COPYING file */
#include "lib.h"
#include "str.h"
#include "mail-error.h"
#include <sys/stat.h>
#include <unistd.h>
#include <pwd.h>
#include <grp.h>
bool mail_error_from_errno(enum mail_error *error_r,
const char **error_string_r)
{
if (ENOACCESS(errno)) {
*error_r = MAIL_ERROR_PERM;
*error_string_r = MAIL_ERRSTR_NO_PERMISSION;
} else if (ENOSPACE(errno)) {
*error_r = MAIL_ERROR_NOSPACE;
*error_string_r = MAIL_ERRSTR_NO_SPACE;
} else if (ENOTFOUND(errno)) {
*error_r = MAIL_ERROR_NOTFOUND;
*error_string_r = errno != ELOOP ? "Not found" :
"Directory structure is broken";
} else {
return FALSE;
}
return TRUE;
}
const char *mail_error_eacces_msg(const char *func, const char *path)
{
const char *prev_path = path, *dir = "/", *p;
const struct passwd *pw;
const struct group *group;
string_t *errmsg;
struct stat st;
int ret = -1;
errmsg = t_str_new(256);
str_printfa(errmsg, "%s(%s) failed: Permission denied (euid=%s",
func, path, dec2str(geteuid()));
pw = getpwuid(geteuid());
if (pw != NULL)
str_printfa(errmsg, "(%s)", pw->pw_name);
str_printfa(errmsg, " egid=%s", dec2str(getegid()));
group = getgrgid(getegid());
if (group != NULL)
str_printfa(errmsg, "(%s)", group->gr_name);
while ((p = strrchr(prev_path, '/')) != NULL) {
dir = t_strdup_until(prev_path, p);
ret = stat(dir, &st);
if (ret == 0 || errno != EACCES)
break;
prev_path = dir;
dir = "/";
}
if (ret == 0) {
if (access(dir, X_OK) < 0 && errno == EACCES)
str_printfa(errmsg, " missing +x perm: %s", dir);
else if (prev_path == path &&
access(path, R_OK) < 0 && errno == EACCES)
str_printfa(errmsg, " missing +r perm: %s", path);
else
str_printfa(errmsg, " UNIX perms seem ok, ACL problem?");
}
str_append_c(errmsg, ')');
return str_c(errmsg);
}