lighttpd 1.4.x https://www.lighttpd.net/
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#include "first.h"
#include "base.h"
#include "log.h"
#include "buffer.h"
#include "http_chunk.h"
#include "http_header.h"
#include "plugin.h"
#include <stdlib.h>
#include <string.h>
/* plugin config for all request/connections */
typedef struct {
array *extensions;
} plugin_config;
typedef struct {
PLUGIN_DATA;
plugin_config **config_storage;
plugin_config conf;
} plugin_data;
/* init the plugin data */
INIT_FUNC(mod_flv_streaming_init) {
return calloc(1, sizeof(plugin_data));
}
/* detroy the plugin data */
FREE_FUNC(mod_flv_streaming_free) {
plugin_data *p = p_d;
if (!p) return HANDLER_GO_ON;
if (p->config_storage) {
for (size_t i = 0; i < srv->config_context->used; ++i) {
plugin_config *s = p->config_storage[i];
if (NULL == s) continue;
array_free(s->extensions);
free(s);
}
free(p->config_storage);
}
free(p);
UNUSED(srv);
return HANDLER_GO_ON;
}
/* handle plugin config and check values */
SETDEFAULTS_FUNC(mod_flv_streaming_set_defaults) {
plugin_data *p = p_d;
size_t i = 0;
config_values_t cv[] = {
{ "flv-streaming.extensions", NULL, T_CONFIG_ARRAY, T_CONFIG_SCOPE_CONNECTION }, /* 0 */
{ NULL, NULL, T_CONFIG_UNSET, T_CONFIG_SCOPE_UNSET }
};
if (!p) return HANDLER_ERROR;
p->config_storage = calloc(srv->config_context->used, sizeof(plugin_config *));
for (i = 0; i < srv->config_context->used; i++) {
data_config const* config = (data_config const*)srv->config_context->data[i];
plugin_config *s;
s = calloc(1, sizeof(plugin_config));
s->extensions = array_init();
cv[0].destination = s->extensions;
p->config_storage[i] = s;
if (0 != config_insert_values_global(srv, config->value, cv, i == 0 ? T_CONFIG_SCOPE_SERVER : T_CONFIG_SCOPE_CONNECTION)) {
return HANDLER_ERROR;
}
if (!array_is_vlist(s->extensions)) {
log_error_write(srv, __FILE__, __LINE__, "s",
"unexpected value for flv-streaming.extensions; expected list of \"ext\"");
return HANDLER_ERROR;
}
}
return HANDLER_GO_ON;
}
#define PATCH(x) \
p->conf.x = s->x;
static int mod_flv_streaming_patch_connection(server *srv, connection *con, plugin_data *p) {
size_t i, j;
plugin_config *s = p->config_storage[0];
PATCH(extensions);
/* skip the first, the global context */
for (i = 1; i < srv->config_context->used; i++) {
if (!config_check_cond(con, i)) continue; /* condition not matched */
data_config *dc = (data_config *)srv->config_context->data[i];
s = p->config_storage[i];
/* merge config */
for (j = 0; j < dc->value->used; j++) {
data_unset *du = dc->value->data[j];
if (buffer_is_equal_string(&du->key, CONST_STR_LEN("flv-streaming.extensions"))) {
PATCH(extensions);
}
}
}
return 0;
}
#undef PATCH
static off_t get_param_value(buffer *qb, const char *m, size_t mlen) {
const char * const q = qb->ptr;
size_t len = buffer_string_length(qb);
if (len < mlen+2) return -1;
len -= (mlen+2);
for (size_t i = 0; i <= len; ++i) {
if (0 == memcmp(q+i, m, mlen) && q[i+mlen] == '=') {
char *err;
off_t n = strtoll(q+i+mlen+1, &err, 10);
return (*err == '\0' || *err == '&') ? n : -1;
}
do { ++i; } while (i < len && q[i] != '&');
}
return -1;
}
URIHANDLER_FUNC(mod_flv_streaming_path_handler) {
plugin_data *p = p_d;
if (con->mode != DIRECT) return HANDLER_GO_ON;
if (buffer_string_is_empty(con->physical.path)) return HANDLER_GO_ON;
mod_flv_streaming_patch_connection(srv, con, p);
if (!array_match_value_suffix(p->conf.extensions, con->physical.path)) {
/* not found */
return HANDLER_GO_ON;
}
off_t start = get_param_value(con->uri.query, CONST_STR_LEN("start"));
off_t end = get_param_value(con->uri.query, CONST_STR_LEN("end"));
off_t len = -1;
if (start < 0) start = 0;
if (start < end)
len = end - start + 1;
else if (0 == start)
return HANDLER_GO_ON; /* let mod_staticfile send whole file */
/* if there is a start=[0-9]+ in the header use it as start,
* otherwise set start to beginning of file */
/* if there is a end=[0-9]+ in the header use it as end pos,
* otherwise send rest of file, starting from start */
/* let's build a flv header */
http_chunk_append_mem(srv, con, CONST_STR_LEN("FLV\x1\x1\0\0\0\x9\0\0\0\x9"));
if (0 != http_chunk_append_file_range(srv, con, con->physical.path, start, len)) {
chunkqueue_reset(con->write_queue);
return HANDLER_GO_ON;
}
http_header_response_set(con, HTTP_HEADER_CONTENT_TYPE, CONST_STR_LEN("Content-Type"), CONST_STR_LEN("video/x-flv"));
con->file_finished = 1;
return HANDLER_FINISHED;
}
/* this function is called at dlopen() time and inits the callbacks */
int mod_flv_streaming_plugin_init(plugin *p);
int mod_flv_streaming_plugin_init(plugin *p) {
p->version = LIGHTTPD_VERSION_ID;
p->name = buffer_init_string("flv_streaming");
p->init = mod_flv_streaming_init;
p->handle_physical = mod_flv_streaming_path_handler;
p->set_defaults = mod_flv_streaming_set_defaults;
p->cleanup = mod_flv_streaming_free;
p->data = NULL;
return 0;
}