Adding upstream version 14.2.upstream/14.2upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 279 insertions, 0 deletions

diff --git a/src/modules/stdin-util.c b/src/modules/stdin-util.c
new file mode 100644
index 0000000..37bd1a4
--- /dev/null
+++ b/src/modules/stdin-util.c
@@ -0,0 +1,279 @@
+/***
+  This file is part of PulseAudio.
+
+  Copyright 2009 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/>.
+***/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <string.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <signal.h>
+
+#include <pulse/xmalloc.h>
+#include <pulsecore/module.h>
+#include <pulsecore/core.h>
+#include <pulsecore/core-util.h>
+#include <pulsecore/log.h>
+#include <pulse/mainloop-api.h>
+#include <pulsecore/core-error.h>
+#include <pulsecore/start-child.h>
+
+#include "stdin-util.h"
+
+int fill_buf(struct userdata *u) {
+    ssize_t r;
+    pa_assert(u);
+
+    if (u->buf_fill >= BUF_MAX) {
+        pa_log("read buffer overflow");
+        return -1;
+    }
+
+    if ((r = pa_read(u->fd, u->buf + u->buf_fill, BUF_MAX - u->buf_fill, &u->fd_type)) <= 0)
+        return -1;
+
+    u->buf_fill += (size_t) r;
+    return 0;
+}
+
+int read_byte(struct userdata *u) {
+    int ret;
+    pa_assert(u);
+
+    if (u->buf_fill < 1)
+        if (fill_buf(u) < 0)
+            return -1;
+
+    ret = u->buf[0];
+    pa_assert(u->buf_fill > 0);
+    u->buf_fill--;
+    memmove(u->buf, u->buf+1, u->buf_fill);
+    return ret;
+}
+
+char *read_string(struct userdata *u) {
+    pa_assert(u);
+
+    for (;;) {
+        char *e;
+
+        if ((e = memchr(u->buf, 0, u->buf_fill))) {
+            char *ret = pa_xstrdup(u->buf);
+            u->buf_fill -= (size_t) (e - u->buf +1);
+            memmove(u->buf, e+1, u->buf_fill);
+            return ret;
+        }
+
+        if (fill_buf(u) < 0)
+            return NULL;
+    }
+}
+
+void unload_one_module(struct pa_module_info *m, unsigned i) {
+    struct userdata *u;
+
+    pa_assert(m);
+    pa_assert(i < m->n_items);
+
+    u = m->userdata;
+
+    if (m->items[i].index == PA_INVALID_INDEX)
+        return;
+
+    pa_log_debug("Unloading module #%i", m->items[i].index);
+    pa_module_unload_by_index(u->core, m->items[i].index, true);
+    m->items[i].index = PA_INVALID_INDEX;
+    pa_xfree(m->items[i].name);
+    pa_xfree(m->items[i].args);
+    m->items[i].name = m->items[i].args = NULL;
+}
+
+void unload_all_modules(struct pa_module_info *m) {
+    unsigned i;
+
+    pa_assert(m);
+
+    for (i = 0; i < m->n_items; i++)
+        unload_one_module(m, i);
+
+    m->n_items = 0;
+}
+
+void load_module(
+        struct pa_module_info *m,
+        unsigned i,
+        const char *name,
+        const char *args,
+        bool is_new) {
+
+    struct userdata *u;
+    pa_module *mod;
+
+    pa_assert(m);
+    pa_assert(name);
+    pa_assert(args);
+
+    u = m->userdata;
+
+    if (!is_new) {
+        if (m->items[i].index != PA_INVALID_INDEX &&
+            pa_streq(m->items[i].name, name) &&
+            pa_streq(m->items[i].args, args))
+            return;
+
+        unload_one_module(m, i);
+    }
+
+    pa_log_debug("Loading module '%s' with args '%s' due to GConf/GSettings configuration.", name, args);
+
+    m->items[i].name = pa_xstrdup(name);
+    m->items[i].args = pa_xstrdup(args);
+    m->items[i].index = PA_INVALID_INDEX;
+
+    if (pa_module_load(&mod, u->core, name, args) < 0) {
+        pa_log("pa_module_load() failed");
+        return;
+    }
+
+    m->items[i].index = mod->index;
+}
+
+void module_info_free(void *p) {
+    struct pa_module_info *m = p;
+
+    pa_assert(m);
+
+    unload_all_modules(m);
+    pa_xfree(m->name);
+    pa_xfree(m);
+}
+
+int handle_event(struct userdata *u) {
+    int opcode;
+    int ret = 0;
+
+    do {
+        if ((opcode = read_byte(u)) < 0) {
+            if (errno == EINTR || errno == EAGAIN)
+                break;
+            goto fail;
+        }
+
+        switch (opcode) {
+            case '!':
+                /* The helper tool is now initialized */
+                ret = 1;
+                break;
+
+            case '+': {
+                char *name;
+                struct pa_module_info *m;
+                unsigned i, j;
+
+                if (!(name = read_string(u)))
+                    goto fail;
+
+                if (!(m = pa_hashmap_get(u->module_infos, name))) {
+                    m = pa_xnew(struct pa_module_info, 1);
+                    m->userdata = u;
+                    m->name = name;
+                    m->n_items = 0;
+                    pa_hashmap_put(u->module_infos, m->name, m);
+                } else
+                    pa_xfree(name);
+
+                i = 0;
+                while (i < MAX_MODULES) {
+                    char *module, *args;
+
+                    if (!(module = read_string(u))) {
+                        if (i > m->n_items) m->n_items = i;
+                        goto fail;
+                    }
+
+                    if (!*module) {
+                        pa_xfree(module);
+                        break;
+                    }
+
+                    if (!(args = read_string(u))) {
+                        pa_xfree(module);
+
+                        if (i > m->n_items) m->n_items = i;
+                        goto fail;
+                    }
+
+                    load_module(m, i, module, args, i >= m->n_items);
+
+                    i++;
+
+                    pa_xfree(module);
+                    pa_xfree(args);
+                }
+
+                /* Unload all removed modules */
+                for (j = i; j < m->n_items; j++)
+                    unload_one_module(m, j);
+
+                m->n_items = i;
+
+                break;
+            }
+
+            case '-': {
+                char *name;
+
+                if (!(name = read_string(u)))
+                    goto fail;
+
+                pa_hashmap_remove_and_free(u->module_infos, name);
+                pa_xfree(name);
+
+                break;
+            }
+        }
+    } while (u->buf_fill > 0 && ret == 0);
+
+    return ret;
+
+fail:
+    pa_log("Unable to read or parse data from client.");
+    return -1;
+}
+
+void io_event_cb(
+        pa_mainloop_api*a,
+        pa_io_event* e,
+        int fd,
+        pa_io_event_flags_t events,
+        void *userdata) {
+
+    struct userdata *u = userdata;
+
+    if (handle_event(u) < 0) {
+
+        if (u->io_event) {
+            u->core->mainloop->io_free(u->io_event);
+            u->io_event = NULL;
+        }
+
+        pa_module_unload_request(u->module, true);
+    }
+}