mail-error.c revision 9e9f0cf3cc3ce546e8a433990c92dd9be6665df6
76b43e4417bab52e913da39b5f5bc2a130d3f149Timo Sirainen/* Copyright (c) 2007-2008 Dovecot authors, see the included COPYING file */
ff7056842f14fd3b30a2d327dfab165b9d15dd30Timo Sirainen
ff7056842f14fd3b30a2d327dfab165b9d15dd30Timo Sirainen#include "lib.h"
9e9f0cf3cc3ce546e8a433990c92dd9be6665df6Timo Sirainen#include "str.h"
ff7056842f14fd3b30a2d327dfab165b9d15dd30Timo Sirainen#include "mail-error.h"
ff7056842f14fd3b30a2d327dfab165b9d15dd30Timo Sirainen
9e9f0cf3cc3ce546e8a433990c92dd9be6665df6Timo Sirainen#include <sys/stat.h>
9e9f0cf3cc3ce546e8a433990c92dd9be6665df6Timo Sirainen#include <unistd.h>
9e9f0cf3cc3ce546e8a433990c92dd9be6665df6Timo Sirainen#include <pwd.h>
9e9f0cf3cc3ce546e8a433990c92dd9be6665df6Timo Sirainen#include <grp.h>
9e9f0cf3cc3ce546e8a433990c92dd9be6665df6Timo Sirainen
ff7056842f14fd3b30a2d327dfab165b9d15dd30Timo Sirainenbool mail_error_from_errno(enum mail_error *error_r,
ff7056842f14fd3b30a2d327dfab165b9d15dd30Timo Sirainen const char **error_string_r)
ff7056842f14fd3b30a2d327dfab165b9d15dd30Timo Sirainen{
ff7056842f14fd3b30a2d327dfab165b9d15dd30Timo Sirainen if (ENOACCESS(errno)) {
ff7056842f14fd3b30a2d327dfab165b9d15dd30Timo Sirainen *error_r = MAIL_ERROR_PERM;
ff7056842f14fd3b30a2d327dfab165b9d15dd30Timo Sirainen *error_string_r = MAIL_ERRSTR_NO_PERMISSION;
ff7056842f14fd3b30a2d327dfab165b9d15dd30Timo Sirainen } else if (ENOSPACE(errno)) {
ff7056842f14fd3b30a2d327dfab165b9d15dd30Timo Sirainen *error_r = MAIL_ERROR_NOSPACE;
ff7056842f14fd3b30a2d327dfab165b9d15dd30Timo Sirainen *error_string_r = MAIL_ERRSTR_NO_SPACE;
ff7056842f14fd3b30a2d327dfab165b9d15dd30Timo Sirainen } else if (ENOTFOUND(errno)) {
ff7056842f14fd3b30a2d327dfab165b9d15dd30Timo Sirainen *error_r = MAIL_ERROR_NOTFOUND;
ff7056842f14fd3b30a2d327dfab165b9d15dd30Timo Sirainen *error_string_r = errno != ELOOP ? "Not found" :
ff7056842f14fd3b30a2d327dfab165b9d15dd30Timo Sirainen "Directory structure is broken";
ff7056842f14fd3b30a2d327dfab165b9d15dd30Timo Sirainen } else {
ff7056842f14fd3b30a2d327dfab165b9d15dd30Timo Sirainen return FALSE;
ff7056842f14fd3b30a2d327dfab165b9d15dd30Timo Sirainen }
ff7056842f14fd3b30a2d327dfab165b9d15dd30Timo Sirainen return TRUE;
ff7056842f14fd3b30a2d327dfab165b9d15dd30Timo Sirainen}
9e9f0cf3cc3ce546e8a433990c92dd9be6665df6Timo Sirainen
9e9f0cf3cc3ce546e8a433990c92dd9be6665df6Timo Sirainenconst char *mail_error_eacces_msg(const char *func, const char *path)
9e9f0cf3cc3ce546e8a433990c92dd9be6665df6Timo Sirainen{
9e9f0cf3cc3ce546e8a433990c92dd9be6665df6Timo Sirainen const char *prev_path = path, *dir = "/", *p;
9e9f0cf3cc3ce546e8a433990c92dd9be6665df6Timo Sirainen const struct passwd *pw;
9e9f0cf3cc3ce546e8a433990c92dd9be6665df6Timo Sirainen const struct group *group;
9e9f0cf3cc3ce546e8a433990c92dd9be6665df6Timo Sirainen string_t *errmsg;
9e9f0cf3cc3ce546e8a433990c92dd9be6665df6Timo Sirainen struct stat st;
9e9f0cf3cc3ce546e8a433990c92dd9be6665df6Timo Sirainen int ret = -1;
9e9f0cf3cc3ce546e8a433990c92dd9be6665df6Timo Sirainen
9e9f0cf3cc3ce546e8a433990c92dd9be6665df6Timo Sirainen errmsg = t_str_new(256);
9e9f0cf3cc3ce546e8a433990c92dd9be6665df6Timo Sirainen str_printfa(errmsg, "%s(%s) failed: Permission denied (euid=%s",
9e9f0cf3cc3ce546e8a433990c92dd9be6665df6Timo Sirainen func, path, dec2str(geteuid()));
9e9f0cf3cc3ce546e8a433990c92dd9be6665df6Timo Sirainen
9e9f0cf3cc3ce546e8a433990c92dd9be6665df6Timo Sirainen pw = getpwuid(geteuid());
9e9f0cf3cc3ce546e8a433990c92dd9be6665df6Timo Sirainen if (pw != NULL)
9e9f0cf3cc3ce546e8a433990c92dd9be6665df6Timo Sirainen str_printfa(errmsg, "(%s)", pw->pw_name);
9e9f0cf3cc3ce546e8a433990c92dd9be6665df6Timo Sirainen
9e9f0cf3cc3ce546e8a433990c92dd9be6665df6Timo Sirainen str_printfa(errmsg, " egid=%s", dec2str(getegid()));
9e9f0cf3cc3ce546e8a433990c92dd9be6665df6Timo Sirainen group = getgrgid(getegid());
9e9f0cf3cc3ce546e8a433990c92dd9be6665df6Timo Sirainen if (group != NULL)
9e9f0cf3cc3ce546e8a433990c92dd9be6665df6Timo Sirainen str_printfa(errmsg, "(%s)", group->gr_name);
9e9f0cf3cc3ce546e8a433990c92dd9be6665df6Timo Sirainen
9e9f0cf3cc3ce546e8a433990c92dd9be6665df6Timo Sirainen while ((p = strrchr(prev_path, '/')) != NULL) {
9e9f0cf3cc3ce546e8a433990c92dd9be6665df6Timo Sirainen dir = t_strdup_until(prev_path, p);
9e9f0cf3cc3ce546e8a433990c92dd9be6665df6Timo Sirainen ret = stat(dir, &st);
9e9f0cf3cc3ce546e8a433990c92dd9be6665df6Timo Sirainen if (ret == 0 || errno != EACCES)
9e9f0cf3cc3ce546e8a433990c92dd9be6665df6Timo Sirainen break;
9e9f0cf3cc3ce546e8a433990c92dd9be6665df6Timo Sirainen prev_path = dir;
9e9f0cf3cc3ce546e8a433990c92dd9be6665df6Timo Sirainen dir = "/";
9e9f0cf3cc3ce546e8a433990c92dd9be6665df6Timo Sirainen }
9e9f0cf3cc3ce546e8a433990c92dd9be6665df6Timo Sirainen
9e9f0cf3cc3ce546e8a433990c92dd9be6665df6Timo Sirainen if (ret == 0) {
9e9f0cf3cc3ce546e8a433990c92dd9be6665df6Timo Sirainen if (access(dir, X_OK) < 0 && errno == EACCES)
9e9f0cf3cc3ce546e8a433990c92dd9be6665df6Timo Sirainen str_printfa(errmsg, " missing +x perm: %s", dir);
9e9f0cf3cc3ce546e8a433990c92dd9be6665df6Timo Sirainen else if (prev_path == path &&
9e9f0cf3cc3ce546e8a433990c92dd9be6665df6Timo Sirainen access(path, R_OK) < 0 && errno == EACCES)
9e9f0cf3cc3ce546e8a433990c92dd9be6665df6Timo Sirainen str_printfa(errmsg, " missing +r perm: %s", path);
9e9f0cf3cc3ce546e8a433990c92dd9be6665df6Timo Sirainen }
9e9f0cf3cc3ce546e8a433990c92dd9be6665df6Timo Sirainen str_append_c(errmsg, ')');
9e9f0cf3cc3ce546e8a433990c92dd9be6665df6Timo Sirainen return str_c(errmsg);
9e9f0cf3cc3ce546e8a433990c92dd9be6665df6Timo Sirainen}