mirror of
https://github.com/openharmony/third_party_backends.git
synced 2026-07-01 09:11:13 -04:00
刘昊苏
118 lines
3.7 KiB
Diff
118 lines
3.7 KiB
Diff
diff --git a/backend/dll.c b/backend/dll.c
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index bf34c4f6d..7a505d13f 100644
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--- a/backend/dll.c
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+++ b/backend/dll.c
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@@ -292,6 +292,46 @@ static const char *op_name[] = {
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};
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#endif /* __BEOS__ */
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+#if defined(HAVE_SCAN_SERVICE)
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+static int has_suffix(const char *filename, const char *suffix)
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+{
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+ size_t len_filename = strlen(filename);
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+ size_t len_suffix = strlen(suffix);
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+ return len_suffix <= len_filename && strcmp(filename + len_filename - len_suffix, suffix) == 0;
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+}
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+
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+static void find_libname_by_drivername(char* libname, char* dir, char* drivername)
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+{
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+ DBG(1, "%s: begin", __func__);
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+ if (libname == NULL || dir == NULL || drivername == NULL) {
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+ DBG(2, "%s: input parameter is a nullptr.\n", __func__);
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+ return;
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+ }
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+ char driver[PATH_MAX] = {0};
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+ snprintf (driver, sizeof (driver), "libsane-%s.z.so", drivername);
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+ DIR *backends_dir = opendir(dir);
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+ if (backends_dir == NULL) {
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+ DBG(2, "open dir %s error\n", backends_dir);
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+ return;
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+ }
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+ struct dirent *entry;
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+ char full_path[PATH_MAX] = {0};
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+ while ((entry = readdir(backends_dir)) != NULL) {
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+ if (strcmp(entry->d_name, ".") != 0 && strcmp(entry->d_name, "..") != 0) {
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+ memset(full_path, 0, PATH_MAX);
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+ snprintf(full_path, PATH_MAX, "%s/" "%s", dir, entry->d_name);
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+ DBG(1, "full_path %s\n", full_path);
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+ if (has_suffix(full_path, driver)) {
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+ memset(libname, 0, PATH_MAX);
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+ strncpy(libname, full_path, PATH_MAX);
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+ break;
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+ }
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+ }
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+ }
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+ closedir(backends_dir);
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+}
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+#endif /* HAVE_SCAN_SERVICE */
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+
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static void *
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op_unsupported (void)
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{
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@@ -498,6 +538,8 @@ load (struct backend *be)
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snprintf (libname, sizeof (libname), "%s/" PREFIX "%.2s%.5s" POSTFIX,
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dir, be->name, strlen(be->name)>7 ? (be->name)+strlen(be->name)-5 :
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(be->name)+2, V_MAJOR);
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+#elif defined (HAVE_SCAN_SERVICE)
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+ find_libname_by_drivername(libname, dir, be->name);
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#else
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snprintf (libname, sizeof (libname), "%s/" PREFIX "%s" POSTFIX,
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dir, be->name, V_MAJOR);
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@@ -807,6 +849,30 @@ read_config (const char *conffile)
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fclose (fp);
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}
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+#if defined(HAVE_SCAN_SERVICE)
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+static void
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+read_configs(const char *conffile)
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+{
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+ const char* dir = "/data/service/el1/public/print_service/sane/config";
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+ DBG(1, "%s: config_dir : %s ", __func__, dir);
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+ DIR *config_dir = opendir(dir);
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+ if (config_dir == NULL) {
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+ DBG(1, "sane_init/read_configs: opendir failed: %s\n", strerror (errno));
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+ return;
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+ }
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+ struct dirent *entry;
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+ while ((entry = readdir(config_dir)) != NULL) {
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+ // ignore '.' and '..'
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+ if (strcmp(entry->d_name, ".") != 0 && strcmp(entry->d_name, "..") != 0) {
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+ DBG(2, "find dll_config file : %s\n", entry->d_name);
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+ if (has_suffix(entry->d_name, conffile)) {
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+ read_config(entry->d_name);
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+ }
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+ }
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+ }
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+}
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+#endif
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+
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static void
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read_dlld (void)
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{
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@@ -931,8 +997,11 @@ sane_init (SANE_Int * version_code, SANE_Auth_Callback authorize)
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* Read dll.d first, so that the extras backends will be tried last
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*/
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read_dlld ();
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+#ifdef HAVE_SCAN_SERVICE
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+ read_configs(DLL_CONFIG_FILE);
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+#else
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read_config (DLL_CONFIG_FILE);
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-
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+#endif
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fp = sanei_config_open (DLL_ALIASES_FILE);
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if (!fp)
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return SANE_STATUS_GOOD; /* don't insist on aliases file */
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@@ -1284,6 +1353,12 @@ sane_open (SANE_String_Const full_name, SANE_Handle * meta_handle)
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}
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free(be_name);
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+ if (!be)
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+ {
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+ DBG (3, "sane_open: be is nullptr\n");
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+ return SANE_STATUS_NO_MEM;
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+ }
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+
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if (!be->inited)
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{
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status = init (be);
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