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-rw-r--r--lib/src/rdsvc.c356
1 files changed, 0 insertions, 356 deletions
diff --git a/lib/src/rdsvc.c b/lib/src/rdsvc.c
deleted file mode 100644
index 546962d..0000000
--- a/lib/src/rdsvc.c
+++ /dev/null
@@ -1,356 +0,0 @@
-/* SPDX-License-Identifier: GPL-3.0-or-later */
-/*
- * Copyright (C) 2018 - David Oberhollenzer
- *
- * This program 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 3 of the License, or
- * (at your option) any later version.
- *
- * This program 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 this program. If not, see <https://www.gnu.org/licenses/>.
- */
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <unistd.h>
-#include <string.h>
-#include <stdlib.h>
-#include <stdio.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <ctype.h>
-
-#include "service.h"
-#include "util.h"
-
-static int try_unescape(char *arg, rdline_t *rd)
-{
- if (unescape(arg)) {
- fprintf(stderr, "%s: %zu: malformed string constant\n",
- rd->filename, rd->lineno);
- return -1;
- }
- return 0;
-}
-
-static char *try_strdup(const char *str, rdline_t *rd)
-{
- char *out = strdup(str);
-
- if (out == NULL) {
- fprintf(stderr, "%s: %zu: out of memory\n",
- rd->filename, rd->lineno);
- }
- return out;
-}
-
-static int try_pack_argv(char *str, rdline_t *rd)
-{
- int count = pack_argv(str);
- if (count < 0) {
- fprintf(stderr, "%s: %zu: malformed string constant\n",
- rd->filename, rd->lineno);
- }
- return count;
-}
-
-static int svc_desc(service_t *svc, char *arg, rdline_t *rd)
-{
- if (try_unescape(arg, rd))
- return -1;
- svc->desc = try_strdup(arg, rd);
- return svc->desc == NULL ? -1 : 0;
-}
-
-static int svc_tty(service_t *svc, char *arg, rdline_t *rd)
-{
- if (try_unescape(arg, rd))
- return -1;
- svc->ctty = try_strdup(arg, rd);
- return svc->ctty == NULL ? -1 : 0;
-}
-
-static int svc_exec(service_t *svc, char *arg, rdline_t *rd)
-{
- exec_t *e, *end;
-
- e = calloc(1, sizeof(*e) + strlen(arg) + 1);
- if (e == NULL) {
- fprintf(stderr, "%s: %zu: out of memory\n",
- rd->filename, rd->lineno);
- return -1;
- }
-
- strcpy(e->args, arg);
-
- e->argc = try_pack_argv(e->args, rd);
- if (e->argc < 0)
- return -1;
-
- if (svc->exec == NULL) {
- svc->exec = e;
- } else {
- for (end = svc->exec; end->next != NULL; end = end->next)
- ;
- end->next = e;
- }
- return 0;
-}
-
-static int svc_before(service_t *svc, char *arg, rdline_t *rd)
-{
- if (svc->before != NULL) {
- fprintf(stderr, "%s: %zu: 'before' dependencies respecified\n",
- rd->filename, rd->lineno);
- return -1;
- }
-
- svc->before = try_strdup(arg, rd);
- if (svc->before == NULL)
- return -1;
-
- svc->num_before = try_pack_argv(svc->before, rd);
- return (svc->num_before < 0) ? -1 : 0;
-}
-
-static int svc_after(service_t *svc, char *arg, rdline_t *rd)
-{
- if (svc->after != NULL) {
- fprintf(stderr, "%s: %zu: 'after' dependencies respecified\n",
- rd->filename, rd->lineno);
- return -1;
- }
-
- svc->after = try_strdup(arg, rd);
- if (svc->after == NULL)
- return -1;
-
- svc->num_after = try_pack_argv(svc->after, rd);
- return (svc->num_after < 0) ? -1 : 0;
-}
-
-static int svc_type(service_t *svc, char *arg, rdline_t *rd)
-{
- int count = try_pack_argv(arg, rd);
-
- if (count < 1)
- return -1;
-
- svc->type = svc_type_from_string(arg);
-
- if (svc->type == -1) {
- fprintf(stderr, "%s: %zu: unknown service type '%s'\n",
- rd->filename, rd->lineno, arg);
- return -1;
- }
-
- if (count > 1) {
- arg += strlen(arg) + 1;
-
- switch (svc->type) {
- case SVC_RESPAWN:
- if (strcmp(arg, "limit") != 0)
- goto fail_limit;
- arg += strlen(arg) + 1;
-
- if (count > 3)
- goto fail_args;
- if (!isdigit(*arg))
- goto fail_limit;
- svc->rspwn_limit = atoi(arg);
- break;
- default:
- goto fail_args;
- }
- }
-
- return 0;
-fail_args:
- fprintf(stderr, "%s: %zu: unexpected extra arguments\n",
- rd->filename, rd->lineno);
- return -1;
-fail_limit:
- fprintf(stderr, "%s: %zu: expected 'limit <value>' after 'respawn'\n",
- rd->filename, rd->lineno);
- return -1;
-}
-
-static int svc_target(service_t *svc, char *arg, rdline_t *rd)
-{
- int target;
-
- if (try_unescape(arg, rd))
- return -1;
-
- target = svc_target_from_string(arg);
-
- if (target == -1) {
- fprintf(stderr, "%s: %zu: unknown service target '%s'\n",
- rd->filename, rd->lineno, arg);
- return -1;
- }
-
- svc->target = target;
- return 0;
-}
-
-static const struct svc_param {
- const char *key;
-
- unsigned int allow_block : 1;
-
- int flags;
-
- int (*handle)(service_t *svc, char *arg, rdline_t *rd);
-} svc_params[] = {
- { "description", 0, 0, svc_desc },
- { "exec", 1, RDSVC_NO_EXEC, svc_exec },
- { "type", 0, 0, svc_type },
- { "target", 0, 0, svc_target },
- { "tty", 0, RDSVC_NO_CTTY, svc_tty },
- { "before", 0, RDSVC_NO_DEPS, svc_before },
- { "after", 0, RDSVC_NO_DEPS, svc_after },
-};
-
-static int splitkv(rdline_t *rd, char **k, char **v)
-{
- char *key = rd->buffer, *value = rd->buffer;
-
- while (*value != ' ' && *value != '\0') {
- if (!isalpha(*value)) {
- fprintf(stderr,
- "%s: %zu: unexpected '%c' in keyword\n",
- rd->filename, rd->lineno, *value);
- return -1;
- }
- ++value;
- }
-
- if (*value != ' ') {
- fprintf(stderr, "%s: %zu: expected argument after '%s'\n",
- rd->filename, rd->lineno, key);
- return -1;
- }
-
- *(value++) = '\0';
-
- *k = key;
- *v = value;
- return 0;
-}
-
-static const struct svc_param *find_param(rdline_t *rd, const char *name)
-{
- size_t i;
-
- for (i = 0; i < ARRAY_SIZE(svc_params); ++i) {
- if (!strcmp(svc_params[i].key, name))
- return svc_params + i;
- }
-
- fprintf(stderr, "%s: %zu: unknown keyword '%s'\n",
- rd->filename, rd->lineno, name);
- return NULL;
-}
-
-
-service_t *rdsvc(int dirfd, const char *filename, int flags)
-{
- const struct svc_param *p;
- const char *arg, *args[1];
- service_t *svc = NULL;
- char *key, *value;
- size_t argc, nlen;
- rdline_t rd;
- int fd, ret;
-
- fd = openat(dirfd, filename, O_RDONLY);
- if (fd < 0) {
- perror(filename);
- return NULL;
- }
-
- arg = strchr(filename, '@');
- if (arg != NULL) {
- args[0] = arg + 1;
- argc = 1;
- } else {
- argc = 0;
- }
-
- rdline_init(&rd, fd, filename, argc, args);
-
- nlen = (arg != NULL) ? (size_t)(arg - filename) : strlen(filename);
-
- svc = calloc(1, sizeof(*svc) + nlen + 1);
- if (svc == NULL)
- goto fail_oom;
-
- if (!(flags & RDSVC_NO_FNAME)) {
- svc->fname = strdup(filename);
- if (svc->fname == NULL)
- goto fail_oom;
- }
-
- memcpy(svc->name, filename, nlen);
-
- while ((ret = rdline(&rd)) == 0) {
- if (splitkv(&rd, &key, &value))
- goto fail;
-
- p = find_param(&rd, key);
- if (p == NULL)
- goto fail;
-
- if (p->allow_block && *value == '{') {
- for (++value; *value == ' '; ++value)
- ;
-
- if (!(flags & p->flags)) {
- if (*value != '\0' &&
- p->handle(svc, value, &rd)) {
- goto fail;
- }
- }
-
- while ((ret = rdline(&rd)) == 0) {
- if (strcmp(rd.buffer, "}") == 0)
- break;
- if (flags & p->flags)
- continue;
- if (p->handle(svc, rd.buffer, &rd))
- goto fail;
- }
-
- if (ret < 0)
- goto fail;
- if (ret > 0)
- goto fail_bra;
- } else {
- if (flags & p->flags)
- continue;
- if (p->handle(svc, value, &rd))
- goto fail;
- }
- }
-
- if (ret < 0)
- goto fail;
-
- close(fd);
- return svc;
-fail_bra:
- fprintf(stderr, "%s: missing '}' before end-of-file\n", filename);
- goto fail;
-fail_oom:
- fputs("out of memory\n", stderr);
-fail:
- delsvc(svc);
- close(fd);
- return NULL;
-}