summaryrefslogtreecommitdiffstats
path: root/spa/plugins/alsa/acp/conf-parser.c
diff options
context:
space:
mode:
Diffstat (limited to 'spa/plugins/alsa/acp/conf-parser.c')
-rw-r--r--spa/plugins/alsa/acp/conf-parser.c387
1 files changed, 387 insertions, 0 deletions
diff --git a/spa/plugins/alsa/acp/conf-parser.c b/spa/plugins/alsa/acp/conf-parser.c
new file mode 100644
index 0000000..b4d4d47
--- /dev/null
+++ b/spa/plugins/alsa/acp/conf-parser.c
@@ -0,0 +1,387 @@
+/***
+ This file is part of PulseAudio.
+
+ Copyright 2004-2006 Lennart Poettering
+
+ PulseAudio 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.
+
+ PulseAudio 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 Lesser General Public License
+ along with PulseAudio; if not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include "config.h"
+
+#include <dirent.h>
+#include <string.h>
+#include <stdio.h>
+#include <errno.h>
+
+#include "compat.h"
+
+#include "conf-parser.h"
+
+#define WHITESPACE " \t\n"
+#define COMMENTS "#;\n"
+
+/* Run the user supplied parser for an assignment */
+static int normal_assignment(pa_config_parser_state *state) {
+ const pa_config_item *item;
+
+ pa_assert(state);
+
+ for (item = state->item_table; item->parse; item++) {
+
+ if (item->lvalue && !pa_streq(state->lvalue, item->lvalue))
+ continue;
+
+ if (item->section && !state->section)
+ continue;
+
+ if (item->section && !pa_streq(state->section, item->section))
+ continue;
+
+ state->data = item->data;
+
+ return item->parse(state);
+ }
+
+ pa_log("[%s:%u] Unknown lvalue '%s' in section '%s'.", state->filename, state->lineno, state->lvalue, pa_strna(state->section));
+
+ return -1;
+}
+
+/* Parse a proplist entry. */
+static int proplist_assignment(pa_config_parser_state *state) {
+ pa_assert(state);
+ pa_assert(state->proplist);
+
+ if (pa_proplist_sets(state->proplist, state->lvalue, state->rvalue) < 0) {
+ pa_log("[%s:%u] Failed to parse a proplist entry: %s = %s", state->filename, state->lineno, state->lvalue, state->rvalue);
+ return -1;
+ }
+
+ return 0;
+}
+
+/* Parse a variable assignment line */
+static int parse_line(pa_config_parser_state *state) {
+ char *c;
+
+ state->lvalue = state->buf + strspn(state->buf, WHITESPACE);
+
+ if ((c = strpbrk(state->lvalue, COMMENTS)))
+ *c = 0;
+
+ if (!*state->lvalue)
+ return 0;
+
+ if (pa_startswith(state->lvalue, ".include ")) {
+ char *path = NULL, *fn;
+ int r;
+
+ fn = pa_strip(state->lvalue + 9);
+ if (!pa_is_path_absolute(fn)) {
+ const char *k;
+ if ((k = strrchr(state->filename, '/'))) {
+ char *dir = pa_xstrndup(state->filename, k - state->filename);
+ fn = path = pa_sprintf_malloc("%s" PA_PATH_SEP "%s", dir, fn);
+ pa_xfree(dir);
+ }
+ }
+
+ r = pa_config_parse(fn, NULL, state->item_table, state->proplist, false, state->userdata);
+ pa_xfree(path);
+ return r;
+ }
+
+ if (*state->lvalue == '[') {
+ size_t k;
+
+ k = strlen(state->lvalue);
+ pa_assert(k > 0);
+
+ if (state->lvalue[k-1] != ']') {
+ pa_log("[%s:%u] Invalid section header.", state->filename, state->lineno);
+ return -1;
+ }
+
+ pa_xfree(state->section);
+ state->section = pa_xstrndup(state->lvalue + 1, k-2);
+
+ if (pa_streq(state->section, "Properties")) {
+ if (!state->proplist) {
+ pa_log("[%s:%u] \"Properties\" section is not allowed in this file.", state->filename, state->lineno);
+ return -1;
+ }
+
+ state->in_proplist = true;
+ } else
+ state->in_proplist = false;
+
+ return 0;
+ }
+
+ if (!(state->rvalue = strchr(state->lvalue, '='))) {
+ pa_log("[%s:%u] Missing '='.", state->filename, state->lineno);
+ return -1;
+ }
+
+ *state->rvalue = 0;
+ state->rvalue++;
+
+ state->lvalue = pa_strip(state->lvalue);
+ state->rvalue = pa_strip(state->rvalue);
+
+ if (state->in_proplist)
+ return proplist_assignment(state);
+ else
+ return normal_assignment(state);
+}
+
+#ifndef OS_IS_WIN32
+static int conf_filter(const struct dirent *entry) {
+ return pa_endswith(entry->d_name, ".conf");
+}
+#endif
+
+/* Go through the file and parse each line */
+int pa_config_parse(const char *filename, FILE *f, const pa_config_item *t, pa_proplist *proplist, bool use_dot_d,
+ void *userdata) {
+ int r = -1;
+ bool do_close = !f;
+ pa_config_parser_state state;
+
+ pa_assert(filename);
+ pa_assert(t);
+
+ pa_zero(state);
+
+ if (!f && !(f = pa_fopen_cloexec(filename, "r"))) {
+ if (errno == ENOENT) {
+ pa_log_debug("Failed to open configuration file '%s': %s", filename, pa_cstrerror(errno));
+ r = 0;
+ goto finish;
+ }
+
+ pa_log_warn("Failed to open configuration file '%s': %s", filename, pa_cstrerror(errno));
+ goto finish;
+ }
+ pa_log_debug("Parsing configuration file '%s'", filename);
+
+ state.filename = filename;
+ state.item_table = t;
+ state.userdata = userdata;
+
+ if (proplist)
+ state.proplist = pa_proplist_new();
+
+ while (!feof(f)) {
+ if (!fgets(state.buf, sizeof(state.buf), f)) {
+ if (feof(f))
+ break;
+
+ pa_log_warn("Failed to read configuration file '%s': %s", filename, pa_cstrerror(errno));
+ goto finish;
+ }
+
+ state.lineno++;
+
+ if (parse_line(&state) < 0)
+ goto finish;
+ }
+
+ if (proplist)
+ pa_proplist_update(proplist, PA_UPDATE_REPLACE, state.proplist);
+
+ r = 0;
+
+finish:
+ if (state.proplist)
+ pa_proplist_free(state.proplist);
+
+ pa_xfree(state.section);
+
+ if (do_close && f)
+ fclose(f);
+
+ if (use_dot_d) {
+#ifdef OS_IS_WIN32
+ char *dir_name = pa_sprintf_malloc("%s.d", filename);
+ char *pattern = pa_sprintf_malloc("%s\\*.conf", dir_name);
+ HANDLE fh;
+ WIN32_FIND_DATA wfd;
+
+ fh = FindFirstFile(pattern, &wfd);
+ if (fh != INVALID_HANDLE_VALUE) {
+ do {
+ if (!(wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)) {
+ char *filename2 = pa_sprintf_malloc("%s\\%s", dir_name, wfd.cFileName);
+ pa_config_parse(filename2, NULL, t, proplist, false, userdata);
+ pa_xfree(filename2);
+ }
+ } while (FindNextFile(fh, &wfd));
+ FindClose(fh);
+ } else {
+ DWORD err = GetLastError();
+
+ if (err == ERROR_PATH_NOT_FOUND) {
+ pa_log_debug("Pattern %s did not match any files, ignoring.", pattern);
+ } else {
+ LPVOID msgbuf;
+ DWORD fret = FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
+ NULL, err, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), (LPTSTR)&msgbuf, 0, NULL);
+
+ if (fret != 0) {
+ pa_log_warn("FindFirstFile(%s) failed with error %ld (%s), ignoring.", pattern, err, (char*)msgbuf);
+ LocalFree(msgbuf);
+ } else {
+ pa_log_warn("FindFirstFile(%s) failed with error %ld, ignoring.", pattern, err);
+ pa_log_warn("FormatMessage failed with error %ld", GetLastError());
+ }
+ }
+ }
+
+ pa_xfree(pattern);
+ pa_xfree(dir_name);
+#else
+ char *dir_name;
+ int n;
+ struct dirent **entries = NULL;
+
+ dir_name = pa_sprintf_malloc("%s.d", filename);
+
+ n = scandir(dir_name, &entries, conf_filter, alphasort);
+ if (n >= 0) {
+ int i;
+
+ for (i = 0; i < n; i++) {
+ char *filename2;
+
+ filename2 = pa_sprintf_malloc("%s" PA_PATH_SEP "%s", dir_name, entries[i]->d_name);
+ pa_config_parse(filename2, NULL, t, proplist, false, userdata);
+ pa_xfree(filename2);
+
+ free(entries[i]);
+ }
+
+ free(entries);
+ } else {
+ if (errno == ENOENT)
+ pa_log_debug("%s does not exist, ignoring.", dir_name);
+ else
+ pa_log_warn("scandir(\"%s\") failed: %s", dir_name, pa_cstrerror(errno));
+ }
+
+ pa_xfree(dir_name);
+#endif
+ }
+
+ return r;
+}
+
+int pa_config_parse_int(pa_config_parser_state *state) {
+ int *i;
+ int32_t k;
+
+ pa_assert(state);
+
+ i = state->data;
+
+ if (pa_atoi(state->rvalue, &k) < 0) {
+ pa_log("[%s:%u] Failed to parse numeric value: %s", state->filename, state->lineno, state->rvalue);
+ return -1;
+ }
+
+ *i = (int) k;
+ return 0;
+}
+
+int pa_config_parse_unsigned(pa_config_parser_state *state) {
+ unsigned *u;
+ uint32_t k;
+
+ pa_assert(state);
+
+ u = state->data;
+
+ if (pa_atou(state->rvalue, &k) < 0) {
+ pa_log("[%s:%u] Failed to parse numeric value: %s", state->filename, state->lineno, state->rvalue);
+ return -1;
+ }
+
+ *u = (unsigned) k;
+ return 0;
+}
+
+int pa_config_parse_size(pa_config_parser_state *state) {
+ size_t *i;
+ uint32_t k;
+
+ pa_assert(state);
+
+ i = state->data;
+
+ if (pa_atou(state->rvalue, &k) < 0) {
+ pa_log("[%s:%u] Failed to parse numeric value: %s", state->filename, state->lineno, state->rvalue);
+ return -1;
+ }
+
+ *i = (size_t) k;
+ return 0;
+}
+
+int pa_config_parse_bool(pa_config_parser_state *state) {
+ int k;
+ bool *b;
+
+ pa_assert(state);
+
+ b = state->data;
+
+ if ((k = pa_parse_boolean(state->rvalue)) < 0) {
+ pa_log("[%s:%u] Failed to parse boolean value: %s", state->filename, state->lineno, state->rvalue);
+ return -1;
+ }
+
+ *b = !!k;
+
+ return 0;
+}
+
+int pa_config_parse_not_bool(pa_config_parser_state *state) {
+ int k;
+ bool *b;
+
+ pa_assert(state);
+
+ b = state->data;
+
+ if ((k = pa_parse_boolean(state->rvalue)) < 0) {
+ pa_log("[%s:%u] Failed to parse boolean value: %s", state->filename, state->lineno, state->rvalue);
+ return -1;
+ }
+
+ *b = !k;
+
+ return 0;
+}
+
+int pa_config_parse_string(pa_config_parser_state *state) {
+ char **s;
+
+ pa_assert(state);
+
+ s = state->data;
+
+ pa_xfree(*s);
+ *s = *state->rvalue ? pa_xstrdup(state->rvalue) : NULL;
+ return 0;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-11 13:24:33 +0000