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-rw-r--r--rootston/config.c269
1 files changed, 269 insertions, 0 deletions
diff --git a/rootston/config.c b/rootston/config.c
new file mode 100644
index 00000000..3280c6d1
--- /dev/null
+++ b/rootston/config.c
@@ -0,0 +1,269 @@
+#ifndef _POSIX_C_SOURCE
+#define _POSIX_C_SOURCE 200809L
+#endif
+#include <stdlib.h>
+#include <limits.h>
+#include <getopt.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/param.h>
+#include <wlr/util/log.h>
+#include <wlr/types/wlr_box.h>
+#include "rootston/config.h"
+#include "rootston/ini.h"
+
+static void usage(const char *name, int ret) {
+ fprintf(stderr,
+ "usage: %s [-C <FILE>]\n"
+ "\n"
+ " -C <FILE> Path to the configuration file\n"
+ " (default: rootston.ini).\n"
+ " See `rootston.ini.example` for config\n"
+ " file documentation.\n", name);
+
+ exit(ret);
+}
+
+static struct wlr_box *parse_geometry(const char *str) {
+ // format: {width}x{height}+{x}+{y}
+ if (strlen(str) > 255) {
+ wlr_log(L_ERROR, "cannot parse geometry string, too long");
+ return NULL;
+ }
+
+ char *buf = strdup(str);
+ struct wlr_box *box = calloc(1, sizeof(struct wlr_box));
+
+ bool has_width = false;
+ bool has_height = false;
+ bool has_x = false;
+ bool has_y = false;
+
+ char *pch = strtok(buf, "x+");
+ while (pch != NULL) {
+ errno = 0;
+ char *endptr;
+ long val = strtol(pch, &endptr, 0);
+
+ if ((errno == ERANGE && (val == LONG_MAX || val == LONG_MIN)) ||
+ (errno != 0 && val == 0)) {
+ goto invalid_input;
+ }
+
+ if (endptr == pch) {
+ goto invalid_input;
+ }
+
+ if (!has_width) {
+ box->width = val;
+ has_width = true;
+ } else if (!has_height) {
+ box->height = val;
+ has_height = true;
+ } else if (!has_x) {
+ box->x = val;
+ has_x = true;
+ } else if (!has_y) {
+ box->y = val;
+ has_y = true;
+ } else {
+ break;
+ }
+ pch = strtok(NULL, "x+");
+ }
+
+ if (!has_width || !has_height) {
+ goto invalid_input;
+ }
+
+ free(buf);
+ return box;
+
+invalid_input:
+ wlr_log(L_ERROR, "could not parse geometry string: %s", str);
+ free(buf);
+ free(box);
+ return NULL;
+}
+
+static const char *output_prefix = "output:";
+static const char *device_prefix = "device:";
+
+static int config_ini_handler(void *user, const char *section, const char *name,
+ const char *value) {
+ struct roots_config *config = user;
+ if (strncmp(output_prefix, section, strlen(output_prefix)) == 0) {
+ const char *output_name = section + strlen(output_prefix);
+ struct output_config *oc;
+ bool found = false;
+
+ wl_list_for_each(oc, &config->outputs, link) {
+ if (strcmp(oc->name, output_name) == 0) {
+ found = true;
+ break;
+ }
+ }
+
+ if (!found) {
+ oc = calloc(1, sizeof(struct output_config));
+ oc->name = strdup(output_name);
+ oc->transform = WL_OUTPUT_TRANSFORM_NORMAL;
+ wl_list_insert(&config->outputs, &oc->link);
+ }
+
+ if (strcmp(name, "x") == 0) {
+ oc->x = strtol(value, NULL, 10);
+ } else if (strcmp(name, "y") == 0) {
+ oc->y = strtol(value, NULL, 10);
+ } else if (strcmp(name, "rotate") == 0) {
+ if (strcmp(value, "90") == 0) {
+ oc->transform = WL_OUTPUT_TRANSFORM_90;
+ } else if (strcmp(value, "180") == 0) {
+ oc->transform = WL_OUTPUT_TRANSFORM_180;
+ } else if (strcmp(value, "270") == 0) {
+ oc->transform = WL_OUTPUT_TRANSFORM_270;
+ } else if (strcmp(value, "flipped") == 0) {
+ oc->transform = WL_OUTPUT_TRANSFORM_FLIPPED;
+ } else if (strcmp(value, "flipped-90") == 0) {
+ oc->transform = WL_OUTPUT_TRANSFORM_FLIPPED_90;
+ } else if (strcmp(value, "flipped-180") == 0) {
+ oc->transform = WL_OUTPUT_TRANSFORM_FLIPPED_180;
+ } else if (strcmp(value, "flipped-270") == 0) {
+ oc->transform = WL_OUTPUT_TRANSFORM_FLIPPED_270;
+ } else {
+ wlr_log(L_ERROR, "got unknown transform value: %s", value);
+ }
+ }
+ } else if (strcmp(section, "cursor") == 0) {
+ if (strcmp(name, "map-to-output") == 0) {
+ free(config->cursor.mapped_output);
+ config->cursor.mapped_output = strdup(value);
+ } else if (strcmp(name, "geometry") == 0) {
+ free(config->cursor.mapped_box);
+ config->cursor.mapped_box = parse_geometry(value);
+ } else {
+ wlr_log(L_ERROR, "got unknown cursor config: %s", name);
+ }
+ } else if (strncmp(device_prefix, section, strlen(device_prefix)) == 0) {
+ const char *device_name = section + strlen(device_prefix);
+ struct device_config *dc;
+ bool found = false;
+
+ wl_list_for_each(dc, &config->devices, link) {
+ if (strcmp(dc->name, device_name) == 0) {
+ found = true;
+ break;
+ }
+ }
+
+ if (!found) {
+ dc = calloc(1, sizeof(struct device_config));
+ dc->name = strdup(device_name);
+ wl_list_insert(&config->devices, &dc->link);
+ }
+
+ if (strcmp(name, "map-to-output") == 0) {
+ free(dc->mapped_output);
+ dc->mapped_output = strdup(value);
+ } else if (strcmp(name, "geometry") == 0) {
+ free(dc->mapped_box);
+ dc->mapped_box = parse_geometry(value);
+ } else {
+ wlr_log(L_ERROR, "got unknown device config: %s", name);
+ }
+ } else {
+ wlr_log(L_ERROR, "got unknown config section: %s", section);
+ }
+
+ return 1;
+}
+
+struct roots_config *parse_args(int argc, char *argv[]) {
+ struct roots_config *config = calloc(1, sizeof(struct roots_config));
+ wl_list_init(&config->outputs);
+ wl_list_init(&config->devices);
+
+ int c;
+ while ((c = getopt(argc, argv, "C:h")) != -1) {
+ switch (c) {
+ case 'C':
+ config->config_path = strdup(optarg);
+ break;
+ case 'h':
+ case '?':
+ usage(argv[0], c != 'h');
+ }
+ }
+
+ if (!config->config_path) {
+ // get the config path from the current directory
+ char cwd[MAXPATHLEN];
+ if (getcwd(cwd, sizeof(cwd)) != NULL) {
+ char buf[MAXPATHLEN];
+ snprintf(buf, MAXPATHLEN, "%s/%s", cwd, "rootston.ini");
+ config->config_path = strdup(buf);
+ } else {
+ wlr_log(L_ERROR, "could not get cwd");
+ exit(1);
+ }
+ }
+
+ int result = ini_parse(config->config_path, config_ini_handler, config);
+
+ if (result == -1) {
+ wlr_log(L_DEBUG, "No config file found. Using empty config.");
+ } else if (result == -2) {
+ wlr_log(L_ERROR, "Could not allocate memory to parse config file");
+ exit(1);
+ } else if (result != 0) {
+ wlr_log(L_ERROR, "Could not parse config file");
+ exit(1);
+ }
+
+ return config;
+}
+
+void roots_config_destroy(struct roots_config *config) {
+ struct output_config *oc, *otmp = NULL;
+ wl_list_for_each_safe(oc, otmp, &config->outputs, link) {
+ free(oc->name);
+ free(oc);
+ }
+
+ struct device_config *dc, *dtmp = NULL;
+ wl_list_for_each_safe(dc, dtmp, &config->devices, link) {
+ free(dc->name);
+ free(dc->mapped_output);
+ free(dc->mapped_box);
+ free(dc);
+ }
+
+ free(config->config_path);
+ free(config->cursor.mapped_output);
+ free(config->cursor.mapped_box);
+ free(config);
+}
+
+struct output_config *config_get_output(struct roots_config *config,
+ struct wlr_output *output) {
+ struct output_config *o_config;
+ wl_list_for_each(o_config, &config->outputs, link) {
+ if (strcmp(o_config->name, output->name) == 0) {
+ return o_config;
+ }
+ }
+
+ return NULL;
+}
+
+struct device_config *config_get_device(struct roots_config *config,
+ struct wlr_input_device *device) {
+ struct device_config *d_config;
+ wl_list_for_each(d_config, &config->devices, link) {
+ if (strcmp(d_config->name, device->name) == 0) {
+ return d_config;
+ }
+ }
+
+ return NULL;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2025-10-31 22:02:44 +0000