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-rw-r--r--polyp/conf.c285
1 files changed, 285 insertions, 0 deletions
diff --git a/polyp/conf.c b/polyp/conf.c
new file mode 100644
index 00000000..4a11c480
--- /dev/null
+++ b/polyp/conf.c
@@ -0,0 +1,285 @@
+/* $Id$ */
+
+/***
+ This file is part of polypaudio.
+
+ polypaudio 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.
+
+ polypaudio 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 polypaudio; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+ USA.
+***/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <errno.h>
+#include <stdio.h>
+#include <string.h>
+#include <assert.h>
+#include <sys/stat.h>
+
+#include "conf.h"
+#include "util.h"
+#include "xmalloc.h"
+#include "strbuf.h"
+
+static const struct pa_conf default_conf = {
+ .help = 0,
+ .daemonize = 0,
+ .dump_conf = 0,
+ .dump_modules = 0,
+ .fail = 1,
+ .verbose = 0,
+ .high_priority = 0,
+ .stay_root = 0,
+ .version = 0,
+ .disallow_module_loading = 0,
+ .exit_idle_time = -1,
+ .module_idle_time = 20,
+ .auto_log_target = 1,
+ .script_commands = NULL,
+ .dl_search_path = NULL,
+ .default_script_file = NULL,
+ .log_target = PA_LOG_SYSLOG,
+};
+
+#define ENV_SCRIPT_FILE "POLYP_SCRIPT"
+#define ENV_CONFIG_FILE "POLYP_CONFIG"
+
+#ifndef DEFAULT_SCRIPT_FILE
+#define DEFAULT_SCRIPT_FILE "/etc/polypaudio/default.pa"
+#endif
+
+#ifndef DEFAULT_CONFIG_FILE
+#define DEFAULT_CONFIG_FILE "/etc/polypaudio/config"
+#endif
+
+#define DEFAULT_SCRIPT_FILE_LOCAL ".polypaudio.pa"
+#define DEFAULT_CONFIG_FILE_LOCAL ".polypaudio.conf"
+
+char* default_file(const char *envvar, const char *global, const char *local) {
+ char *p, *h;
+
+ assert(envvar && global && local);
+
+ if ((p = getenv(envvar)))
+ return pa_xstrdup(p);
+
+ if ((h = getenv("HOME"))) {
+ struct stat st;
+ p = pa_sprintf_malloc("%s/%s", h, local);
+ if (stat(p, &st) >= 0)
+ return p;
+
+ pa_xfree(p);
+ }
+
+ return pa_xstrdup(global);
+}
+
+
+struct pa_conf* pa_conf_new(void) {
+ struct pa_conf *c = pa_xmemdup(&default_conf, sizeof(default_conf));
+ c->default_script_file = default_file(ENV_SCRIPT_FILE, DEFAULT_SCRIPT_FILE, DEFAULT_SCRIPT_FILE_LOCAL);
+ return c;
+}
+
+void pa_conf_free(struct pa_conf *c) {
+ assert(c);
+ pa_xfree(c->script_commands);
+ pa_xfree(c->dl_search_path);
+ pa_xfree(c->default_script_file);
+ pa_xfree(c);
+}
+
+#define WHITESPACE " \t\n"
+#define COMMENTS "#;\n"
+
+#define PARSE_BOOLEAN(t, v) \
+ do { \
+ if (!strcmp(lvalue, t)) { \
+ int b; \
+ if ((b = pa_parse_boolean(rvalue)) < 0) \
+ goto fail; \
+ c->v = b; \
+ return 0; \
+ } \
+ } while (0)
+
+#define PARSE_STRING(t, v) \
+ do { \
+ if (!strcmp(lvalue, t)) { \
+ pa_xfree(c->v); \
+ c->v = *rvalue ? pa_xstrdup(rvalue) : NULL; \
+ return 0; \
+ } \
+ } while (0)
+
+#define PARSE_INTEGER(t, v) \
+ do { \
+ if (!strcmp(lvalue, t)) { \
+ char *x = NULL; \
+ int i = strtol(rvalue, &x, 0); \
+ if (!x || *x) \
+ goto fail; \
+ c->v = i; \
+ return 0; \
+ } \
+ } while(0)
+
+static int next_assignment(struct pa_conf *c, char *lvalue, char *rvalue, unsigned n) {
+ PARSE_BOOLEAN("daemonize", daemonize);
+ PARSE_BOOLEAN("fail", fail);
+ PARSE_BOOLEAN("verbose", verbose);
+ PARSE_BOOLEAN("high-priority", high_priority);
+ PARSE_BOOLEAN("stay-root", stay_root);
+ PARSE_BOOLEAN("disallow-module-loading", disallow_module_loading);
+
+ PARSE_INTEGER("exit-idle-time", exit_idle_time);
+ PARSE_INTEGER("module-idle-time", module_idle_time);
+
+ PARSE_STRING("dl-search-path", dl_search_path);
+ PARSE_STRING("default-script-file", default_script_file);
+
+ if (!strcmp(lvalue, "log-target")) {
+ if (!strcmp(rvalue, "auto"))
+ c->auto_log_target = 1;
+ else if (!strcmp(rvalue, "syslog")) {
+ c->auto_log_target = 0;
+ c->log_target = PA_LOG_SYSLOG;
+ } else if (!strcmp(rvalue, "stderr")) {
+ c->auto_log_target = 0;
+ c->log_target = PA_LOG_STDERR;
+ } else
+ goto fail;
+
+ return 0;
+ }
+
+fail:
+ pa_log(__FILE__": line %u: parse error.\n", n);
+ return -1;
+}
+
+#undef PARSE_STRING
+#undef PARSE_BOOLEAN
+
+static int in_string(char c, const char *s) {
+ for (; *s; s++)
+ if (*s == c)
+ return 1;
+
+ return 0;
+}
+
+static char *strip(char *s) {
+ char *b = s+strspn(s, WHITESPACE);
+ char *e, *l = NULL;
+
+ for (e = b; *e; e++)
+ if (!in_string(*e, WHITESPACE))
+ l = e;
+
+ if (l)
+ *(l+1) = 0;
+
+ return b;
+}
+
+static int parse_line(struct pa_conf *conf, char *l, unsigned n) {
+ char *e, *c, *b = l+strspn(l, WHITESPACE);
+
+ if ((c = strpbrk(b, COMMENTS)))
+ *c = 0;
+
+ if (!*b)
+ return 0;
+
+ if (!(e = strchr(b, '='))) {
+ pa_log(__FILE__": line %u: missing '='.\n", n);
+ return -1;
+ }
+
+ *e = 0;
+ e++;
+
+ return next_assignment(conf, strip(b), strip(e), n);
+}
+
+
+int pa_conf_load(struct pa_conf *c, const char *filename) {
+ FILE *f;
+ int r = 0;
+ unsigned n = 0;
+ char *def = NULL;
+ assert(c);
+
+ if (!filename)
+ filename = def = default_file(ENV_CONFIG_FILE, DEFAULT_CONFIG_FILE, DEFAULT_CONFIG_FILE_LOCAL);
+
+ if (!(f = fopen(filename, "r"))) {
+ if (errno != ENOENT)
+ pa_log(__FILE__": WARNING: failed to open configuration file '%s': %s\n", filename, strerror(errno));
+
+ goto finish;
+ }
+
+ while (!feof(f)) {
+ char l[256];
+ if (!fgets(l, sizeof(l), f)) {
+ if (!feof(f))
+ pa_log(__FILE__": WARNING: failed to read configuration file '%s': %s\n", filename, strerror(errno));
+
+ break;
+ }
+
+ if (parse_line(c, l, ++n) < 0)
+ r = -1;
+ }
+
+finish:
+
+ if (f)
+ fclose(f);
+
+ pa_xfree(def);
+
+ return r;
+}
+
+char *pa_conf_dump(struct pa_conf *c) {
+ struct pa_strbuf *s = pa_strbuf_new();
+ char *d;
+
+ d = default_file(ENV_CONFIG_FILE, DEFAULT_CONFIG_FILE, DEFAULT_CONFIG_FILE_LOCAL);
+ pa_strbuf_printf(s, "### Default configuration file: %s ###\n\n", d);
+
+ pa_strbuf_printf(s, "verbose = %i\n", !!c->verbose);
+ pa_strbuf_printf(s, "daemonize = %i\n", !!c->daemonize);
+ pa_strbuf_printf(s, "fail = %i\n", !!c->fail);
+ pa_strbuf_printf(s, "high-priority = %i\n", !!c->high_priority);
+ pa_strbuf_printf(s, "stay-root = %i\n", !!c->stay_root);
+ pa_strbuf_printf(s, "disallow-module-loading = %i\n", !!c->disallow_module_loading);
+ pa_strbuf_printf(s, "exit-idle-time = %i\n", c->exit_idle_time);
+ pa_strbuf_printf(s, "module-idle-time = %i\n", c->module_idle_time);
+ pa_strbuf_printf(s, "dl-search-path = %s\n", c->dl_search_path ? c->dl_search_path : "");
+ pa_strbuf_printf(s, "default-script-file = %s\n", c->default_script_file);
+ pa_strbuf_printf(s, "log-target = %s\n", c->auto_log_target ? "auto" : (c->log_target == PA_LOG_SYSLOG ? "syslog" : "stderr"));
+
+ pa_strbuf_printf(s, "\n### EOF ###\n");
+
+ pa_xfree(d);
+
+ return pa_strbuf_tostring_free(s);
+}
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