+++ /dev/null
-/*-*- Mode: C; c-basic-offset: 8 -*-*/
-
-/***
- This file is part of systemd.
-
- Copyright 2010 Lennart Poettering
-
- systemd is free software; you can redistribute it and/or modify it
- under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 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
- General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with systemd; If not, see <http://www.gnu.org/licenses/>.
-***/
-
-#include <string.h>
-#include <stdio.h>
-#include <errno.h>
-#include <assert.h>
-#include <stdlib.h>
-
-#include "conf-parser.h"
-#include "util.h"
-#include "macro.h"
-#include "strv.h"
-#include "log.h"
-
-#define COMMENTS "#;\n"
-#define LINE_MAX 4096
-
-/* Run the user supplied parser for an assignment */
-static int next_assignment(
- const char *filename,
- unsigned line,
- const char *section,
- const ConfigItem *t,
- const char *lvalue,
- const char *rvalue,
- void *userdata) {
-
- assert(filename);
- assert(t);
- assert(lvalue);
- assert(rvalue);
-
- for (; t->parse; t++) {
-
- if (t->lvalue && !streq(lvalue, t->lvalue))
- continue;
-
- if (t->section && !section)
- continue;
-
- if (t->section && !streq(section, t->section))
- continue;
-
- return t->parse(filename, line, section, lvalue, rvalue, t->data, userdata);
- }
-
- /* Warn about unknown non-extension fields. */
- if (!startswith(lvalue, "X-"))
- log_info("[%s:%u] Unknown lvalue '%s' in section '%s'. Ignoring.", filename, line, lvalue, strna(section));
-
- return 0;
-}
-
-/* Parse a variable assignment line */
-static int parse_line(const char *filename, unsigned line, char **section, const char* const * sections, const ConfigItem *t, char *l, void *userdata) {
- char *e;
-
- l = strstrip(l);
-
- if (!*l)
- return 0;
-
- if (strchr(COMMENTS, *l))
- return 0;
-
- if (startswith(l, ".include ")) {
- char *fn;
- int r;
-
- if (!(fn = file_in_same_dir(filename, strstrip(l+9))))
- return -ENOMEM;
-
- r = config_parse(fn, NULL, sections, t, userdata);
- free(fn);
-
- return r;
- }
-
- if (*l == '[') {
- size_t k;
- char *n;
-
- k = strlen(l);
- assert(k > 0);
-
- if (l[k-1] != ']') {
- log_error("[%s:%u] Invalid section header.", filename, line);
- return -EBADMSG;
- }
-
- if (!(n = strndup(l+1, k-2)))
- return -ENOMEM;
-
- if (sections && !strv_contains((char**) sections, n)) {
- log_error("[%s:%u] Unknown section '%s'.", filename, line, n);
- free(n);
- return -EBADMSG;
- }
-
- free(*section);
- *section = n;
-
- return 0;
- }
-
- if (!(e = strchr(l, '='))) {
- log_error("[%s:%u] Missing '='.", filename, line);
- return -EBADMSG;
- }
-
- *e = 0;
- e++;
-
- return next_assignment(filename, line, *section, t, strstrip(l), strstrip(e), userdata);
-}
-
-/* Go through the file and parse each line */
-int config_parse(const char *filename, FILE *f, const char* const * sections, const ConfigItem *t, void *userdata) {
- unsigned line = 0;
- char *section = NULL;
- int r;
- bool ours = false;
-
- assert(filename);
- assert(t);
-
- if (!f) {
- if (!(f = fopen(filename, "re"))) {
- r = -errno;
- log_error("Failed to open configuration file '%s': %s", filename, strerror(-r));
- goto finish;
- }
-
- ours = true;
- }
-
- while (!feof(f)) {
- char l[LINE_MAX];
-
- if (!fgets(l, sizeof(l), f)) {
- if (feof(f))
- break;
-
- r = -errno;
- log_error("Failed to read configuration file '%s': %s", filename, strerror(-r));
- goto finish;
- }
-
- if ((r = parse_line(filename, ++line, §ion, sections, t, l, userdata)) < 0)
- goto finish;
- }
-
- r = 0;
-
-finish:
- free(section);
-
- if (f && ours)
- fclose(f);
-
- return r;
-}
-
-int config_parse_int(
- const char *filename,
- unsigned line,
- const char *section,
- const char *lvalue,
- const char *rvalue,
- void *data,
- void *userdata) {
-
- int *i = data;
- int r;
-
- assert(filename);
- assert(lvalue);
- assert(rvalue);
- assert(data);
-
- if ((r = safe_atoi(rvalue, i)) < 0) {
- log_error("[%s:%u] Failed to parse numeric value: %s", filename, line, rvalue);
- return r;
- }
-
- return 0;
-}
-
-int config_parse_unsigned(
- const char *filename,
- unsigned line,
- const char *section,
- const char *lvalue,
- const char *rvalue,
- void *data,
- void *userdata) {
-
- unsigned *u = data;
- int r;
-
- assert(filename);
- assert(lvalue);
- assert(rvalue);
- assert(data);
-
- if ((r = safe_atou(rvalue, u)) < 0) {
- log_error("[%s:%u] Failed to parse numeric value: %s", filename, line, rvalue);
- return r;
- }
-
- return 0;
-}
-
-int config_parse_size(
- const char *filename,
- unsigned line,
- const char *section,
- const char *lvalue,
- const char *rvalue,
- void *data,
- void *userdata) {
-
- size_t *sz = data;
- unsigned u;
- int r;
-
- assert(filename);
- assert(lvalue);
- assert(rvalue);
- assert(data);
-
- if ((r = safe_atou(rvalue, &u)) < 0) {
- log_error("[%s:%u] Failed to parse numeric value: %s", filename, line, rvalue);
- return r;
- }
-
- *sz = (size_t) u;
- return 0;
-}
-
-int config_parse_bool(
- const char *filename,
- unsigned line,
- const char *section,
- const char *lvalue,
- const char *rvalue,
- void *data,
- void *userdata) {
-
- int k;
- bool *b = data;
-
- assert(filename);
- assert(lvalue);
- assert(rvalue);
- assert(data);
-
- if ((k = parse_boolean(rvalue)) < 0) {
- log_error("[%s:%u] Failed to parse boolean value: %s", filename, line, rvalue);
- return k;
- }
-
- *b = !!k;
- return 0;
-}
-
-int config_parse_string(
- const char *filename,
- unsigned line,
- const char *section,
- const char *lvalue,
- const char *rvalue,
- void *data,
- void *userdata) {
-
- char **s = data;
- char *n;
-
- assert(filename);
- assert(lvalue);
- assert(rvalue);
- assert(data);
-
- if (*rvalue) {
- if (!(n = strdup(rvalue)))
- return -ENOMEM;
- } else
- n = NULL;
-
- free(*s);
- *s = n;
-
- return 0;
-}
-
-int config_parse_path(
- const char *filename,
- unsigned line,
- const char *section,
- const char *lvalue,
- const char *rvalue,
- void *data,
- void *userdata) {
-
- char **s = data;
- char *n;
-
- assert(filename);
- assert(lvalue);
- assert(rvalue);
- assert(data);
-
- if (!path_is_absolute(rvalue)) {
- log_error("[%s:%u] Not an absolute path: %s", filename, line, rvalue);
- return -EINVAL;
- }
-
- if (!(n = strdup(rvalue)))
- return -ENOMEM;
-
- free(*s);
- *s = n;
-
- return 0;
-}
-
-int config_parse_strv(
- const char *filename,
- unsigned line,
- const char *section,
- const char *lvalue,
- const char *rvalue,
- void *data,
- void *userdata) {
-
- char*** sv = data;
- char **n;
- char *w;
- unsigned k;
- size_t l;
- char *state;
-
- assert(filename);
- assert(lvalue);
- assert(rvalue);
- assert(data);
-
- k = strv_length(*sv);
- FOREACH_WORD_QUOTED(w, l, rvalue, state)
- k++;
-
- if (!(n = new(char*, k+1)))
- return -ENOMEM;
-
- if (*sv)
- for (k = 0; (*sv)[k]; k++)
- n[k] = (*sv)[k];
- else
- k = 0;
-
- FOREACH_WORD_QUOTED(w, l, rvalue, state)
- if (!(n[k++] = strndup(w, l)))
- goto fail;
-
- n[k] = NULL;
- free(*sv);
- *sv = n;
-
- return 0;
-
-fail:
- for (; k > 0; k--)
- free(n[k-1]);
- free(n);
-
- return -ENOMEM;
-}
-
-int config_parse_path_strv(
- const char *filename,
- unsigned line,
- const char *section,
- const char *lvalue,
- const char *rvalue,
- void *data,
- void *userdata) {
-
- char*** sv = data;
- char **n;
- char *w;
- unsigned k;
- size_t l;
- char *state;
- int r;
-
- assert(filename);
- assert(lvalue);
- assert(rvalue);
- assert(data);
-
- k = strv_length(*sv);
- FOREACH_WORD_QUOTED(w, l, rvalue, state)
- k++;
-
- if (!(n = new(char*, k+1)))
- return -ENOMEM;
-
- k = 0;
- if (*sv)
- for (; (*sv)[k]; k++)
- n[k] = (*sv)[k];
-
- FOREACH_WORD_QUOTED(w, l, rvalue, state) {
- if (!(n[k] = strndup(w, l))) {
- r = -ENOMEM;
- goto fail;
- }
-
- if (!path_is_absolute(n[k])) {
- log_error("[%s:%u] Not an absolute path: %s", filename, line, rvalue);
- r = -EINVAL;
- goto fail;
- }
-
- k++;
- }
-
- n[k] = NULL;
- free(*sv);
- *sv = n;
-
- return 0;
-
-fail:
- free(n[k]);
- for (; k > 0; k--)
- free(n[k-1]);
- free(n);
-
- return r;
-}
~ianmdlvl / elogind.git / blobdiff