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/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
/***
This file is part of systemd.
Copyright 2013 Lennart Poettering
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
systemd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include "bus-internal.h"
bool object_path_is_valid(const char *p) {
const char *q;
bool slash;
if (!p)
return false;
if (p[0] != '/')
return false;
if (p[1] == 0)
return true;
for (slash = true, q = p+1; *q; q++)
if (*q == '/') {
if (slash)
return false;
slash = true;
} else {
bool good;
good =
(*q >= 'a' && *q <= 'z') ||
(*q >= 'A' && *q <= 'Z') ||
(*q >= '0' && *q <= '9') ||
*q == '_';
if (!good)
return false;
slash = false;
}
if (slash)
return false;
return true;
}
bool interface_name_is_valid(const char *p) {
const char *q;
bool dot, found_dot;
if (isempty(p))
return false;
for (dot = true, q = p; *q; q++)
if (*q == '.') {
if (dot)
return false;
found_dot = dot = true;
} else {
bool good;
good =
(*q >= 'a' && *q <= 'z') ||
(*q >= 'A' && *q <= 'Z') ||
(!dot && *q >= '0' && *q <= '9') ||
*q == '_';
if (!good)
return false;
dot = false;
}
if (q - p > 255)
return false;
if (dot)
return false;
if (!found_dot)
return false;
return true;
}
bool service_name_is_valid(const char *p) {
const char *q;
bool dot, found_dot, unique;
if (isempty(p))
return false;
unique = p[0] == ':';
for (dot = true, q = unique ? p+1 : p; *q; q++)
if (*q == '.') {
if (dot)
return false;
found_dot = dot = true;
} else {
bool good;
good =
(*q >= 'a' && *q <= 'z') ||
(*q >= 'A' && *q <= 'Z') ||
((!dot || unique) && *q >= '0' && *q <= '9') ||
*q == '_' || *q == '-';
if (!good)
return false;
dot = false;
}
if (q - p > 255)
return false;
if (dot)
return false;
if (!found_dot)
return false;
return true;
}
bool member_name_is_valid(const char *p) {
const char *q;
if (isempty(p))
return false;
for (q = p; *q; q++) {
bool good;
good =
(*q >= 'a' && *q <= 'z') ||
(*q >= 'A' && *q <= 'Z') ||
(*q >= '0' && *q <= '9') ||
*q == '_';
if (!good)
return false;
}
if (q - p > 255)
return false;
return true;
}
static bool complex_pattern_check(char c, const char *a, const char *b) {
bool separator = false;
for (;;) {
if (*a != *b)
return (separator && (*a == 0 || *b == 0)) ||
(*a == 0 && *b == c && b[1] == 0) ||
(*b == 0 && *a == c && a[1] == 0);
if (*a == 0)
return true;
separator = *a == c;
a++, b++;
}
}
bool namespace_complex_pattern(const char *pattern, const char *value) {
return complex_pattern_check('.', pattern, value);
}
bool path_complex_pattern(const char *pattern, const char *value) {
return complex_pattern_check('/', pattern, value);
}
static bool simple_pattern_check(char c, const char *a, const char *b) {
for (;;) {
if (*a != *b)
return *a == 0 && *b == c;
if (*a == 0)
return true;
a++, b++;
}
}
bool namespace_simple_pattern(const char *pattern, const char *value) {
return simple_pattern_check('.', pattern, value);
}
bool path_simple_pattern(const char *pattern, const char *value) {
return simple_pattern_check('/', pattern, value);
}
int bus_message_type_from_string(const char *s, uint8_t *u) {
if (streq(s, "signal"))
*u = SD_BUS_MESSAGE_TYPE_SIGNAL;
else if (streq(s, "method_call"))
*u = SD_BUS_MESSAGE_TYPE_METHOD_CALL;
else if (streq(s, "error"))
*u = SD_BUS_MESSAGE_TYPE_METHOD_ERROR;
else if (streq(s, "method_return"))
*u = SD_BUS_MESSAGE_TYPE_METHOD_RETURN;
else
return -EINVAL;
return 0;
}
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