static njs_vm_t *
ngx_http_js_compile(ngx_conf_t *cf, ngx_str_t *script)
{
u_char *start, *end;
nxt_int_t rc;
nxt_str_t s;
njs_vm_t *vm;
nxt_lvlhsh_t externals;
njs_vm_shared_t *shared;
nxt_mem_cache_pool_t *mcp;
mcp = ngx_http_js_create_mem_cache_pool();
if (mcp == NULL) {
return NULL;
}
shared = NULL;
nxt_lvlhsh_init(&externals);
if (njs_add_external(&externals, mcp, 0, ngx_http_js_externals,
nxt_nitems(ngx_http_js_externals))
!= NJS_OK)
{
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "could not add js externals");
return NULL;
}
vm = njs_vm_create(mcp, &shared, &externals);
if (vm == NULL) {
return NULL;
}
start = script->data;
end = start + script->len;
rc = njs_vm_compile(vm, &start, end);
if (rc != NJS_OK) {
njs_vm_exception(vm, &s);
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"js compilation error: \"%*s\"", s.len, s.data);
return NULL;
}
if (start != end) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"extra characters in js script: \"%*s\"",
end - start, start);
return NULL;
}
return vm;
}
static char *
ngx_http_js_include(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
{
ngx_http_js_loc_conf_t *jlcf = conf;
size_t size;
u_char *start, *end;
ssize_t n;
ngx_fd_t fd;
ngx_str_t *value, file;
nxt_int_t rc;
nxt_str_t text, ext, *export;
nxt_lvlhsh_t externals;
ngx_file_info_t fi;
njs_vm_shared_t *shared;
ngx_pool_cleanup_t *cln;
nxt_mem_cache_pool_t *mcp;
if (jlcf->vm) {
return "is duplicate";
}
value = cf->args->elts;
file = value[1];
if (ngx_conf_full_name(cf->cycle, &file, 1) != NGX_OK) {
return NGX_CONF_ERROR;
}
fd = ngx_open_file(file.data, NGX_FILE_RDONLY, NGX_FILE_OPEN, 0);
if (fd == NGX_INVALID_FILE) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, ngx_errno,
ngx_open_file_n " \"%s\" failed", file.data);
return NGX_CONF_ERROR;
}
if (ngx_fd_info(fd, &fi) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_EMERG, cf->log, ngx_errno,
ngx_fd_info_n " \"%s\" failed", file.data);
(void) ngx_close_file(fd);
return NGX_CONF_ERROR;
}
size = ngx_file_size(&fi);
start = ngx_pnalloc(cf->pool, size);
if (start == NULL) {
(void) ngx_close_file(fd);
return NGX_CONF_ERROR;
}
n = ngx_read_fd(fd, start, size);
if (n == -1) {
ngx_log_error(NGX_LOG_ALERT, cf->log, ngx_errno,
ngx_read_fd_n " \"%s\" failed", file.data);
(void) ngx_close_file(fd);
return NGX_CONF_ERROR;
}
if ((size_t) n != size) {
ngx_log_error(NGX_LOG_ALERT, cf->log, 0,
ngx_read_fd_n " has read only %z of %O from \"%s\"",
n, size, file.data);
(void) ngx_close_file(fd);
return NGX_CONF_ERROR;
}
if (ngx_close_file(fd) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_ALERT, cf->log, ngx_errno,
ngx_close_file_n " %s failed", file.data);
}
end = start + size;
mcp = ngx_http_js_create_mem_cache_pool();
if (mcp == NULL) {
return NGX_CONF_ERROR;
}
cln = ngx_pool_cleanup_add(cf->pool, 0);
if (cln == NULL) {
return NULL;
}
cln->handler = ngx_http_js_cleanup_mem_cache_pool;
cln->data = mcp;
shared = NULL;
nxt_lvlhsh_init(&externals);
if (njs_vm_external_add(&externals, mcp, 0, ngx_http_js_externals,
nxt_nitems(ngx_http_js_externals))
!= NJS_OK)
{
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "could not add js externals");
return NGX_CONF_ERROR;
}
jlcf->vm = njs_vm_create(mcp, &shared, &externals);
if (jlcf->vm == NULL) {
return NGX_CONF_ERROR;
}
rc = njs_vm_compile(jlcf->vm, &start, end, NULL, &export);
if (rc != NJS_OK) {
njs_vm_exception(jlcf->vm, &text);
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"%*s, included",
text.length, text.start);
return NGX_CONF_ERROR;
}
if (start != end) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"extra characters in js script: \"%*s\", included",
end - start, start);
return NGX_CONF_ERROR;
}
ext = nxt_string_value("$r");
if (njs_vm_external(jlcf->vm, NULL, &ext, &jlcf->args[0]) != NJS_OK) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"js external \"%*s\" not found",
ext.length, ext.start);
return NGX_CONF_ERROR;
}
ext = nxt_string_value("response");
rc = njs_vm_external(jlcf->vm, &jlcf->args[0], &ext, &jlcf->args[1]);
if (rc != NXT_OK) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"js external \"$r.%*s\" not found",
ext.length, ext.start);
return NGX_CONF_ERROR;
}
return NGX_CONF_OK;
}
