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authorDrew DeVault <sir@cmpwn.com>2017-09-22 20:24:32 -0400
committerDrew DeVault <sir@cmpwn.com>2017-09-22 23:30:40 -0400
commit550748681db7f75888beab41a1a85eb86876604c (patch)
tree93d9d376637a6fca3279cfe98dea43d0cceb7373 /rootston
parent06ae9e7c9f8811dcda3df8ec72ab75e54ee54b87 (diff)
Establish rootston headers & main
Diffstat (limited to 'rootston')
-rw-r--r--rootston/config.c269
-rw-r--r--rootston/ini.c195
-rw-r--r--rootston/main.c14
-rw-r--r--rootston/meson.build7
4 files changed, 485 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;
+}
diff --git a/rootston/ini.c b/rootston/ini.c
new file mode 100644
index 00000000..56cc9ea6
--- /dev/null
+++ b/rootston/ini.c
@@ -0,0 +1,195 @@
+/* inih -- simple .INI file parser
+
+inih is released under the New BSD license (see LICENSE.txt). Go to the project
+home page for more info:
+
+https://github.com/benhoyt/inih
+
+*/
+
+#if defined(_MSC_VER) && !defined(_CRT_SECURE_NO_WARNINGS)
+#define _CRT_SECURE_NO_WARNINGS
+#endif
+
+#include <stdio.h>
+#include <ctype.h>
+#include <string.h>
+
+#include "rootston/ini.h"
+
+#if !INI_USE_STACK
+#include <stdlib.h>
+#endif
+
+#define MAX_SECTION 50
+#define MAX_NAME 50
+
+/* Strip whitespace chars off end of given string, in place. Return s. */
+static char* rstrip(char* s)
+{
+ char* p = s + strlen(s);
+ while (p > s && isspace((unsigned char)(*--p)))
+ *p = '\0';
+ return s;
+}
+
+/* Return pointer to first non-whitespace char in given string. */
+static char* lskip(const char* s)
+{
+ while (*s && isspace((unsigned char)(*s)))
+ s++;
+ return (char*)s;
+}
+
+/* Return pointer to first char (of chars) or inline comment in given string,
+ or pointer to null at end of string if neither found. Inline comment must
+ be prefixed by a whitespace character to register as a comment. */
+static char* find_chars_or_comment(const char* s, const char* chars)
+{
+#if INI_ALLOW_INLINE_COMMENTS
+ int was_space = 0;
+ while (*s && (!chars || !strchr(chars, *s)) &&
+ !(was_space && strchr(INI_INLINE_COMMENT_PREFIXES, *s))) {
+ was_space = isspace((unsigned char)(*s));
+ s++;
+ }
+#else
+ while (*s && (!chars || !strchr(chars, *s))) {
+ s++;
+ }
+#endif
+ return (char*)s;
+}
+
+/* Version of strncpy that ensures dest (size bytes) is null-terminated. */
+static char* strncpy0(char* dest, const char* src, size_t size)
+{
+ strncpy(dest, src, size);
+ dest[size - 1] = '\0';
+ return dest;
+}
+
+/* See documentation in header file. */
+int ini_parse_stream(ini_reader reader, void* stream, ini_handler handler,
+ void* user)
+{
+ /* Uses a fair bit of stack (use heap instead if you need to) */
+#if INI_USE_STACK
+ char line[INI_MAX_LINE];
+#else
+ char* line;
+#endif
+ char section[MAX_SECTION] = "";
+ char prev_name[MAX_NAME] = "";
+
+ char* start;
+ char* end;
+ char* name;
+ char* value;
+ int lineno = 0;
+ int error = 0;
+
+#if !INI_USE_STACK
+ line = (char*)malloc(INI_MAX_LINE);
+ if (!line) {
+ return -2;
+ }
+#endif
+
+ /* Scan through stream line by line */
+ while (reader(line, INI_MAX_LINE, stream) != NULL) {
+ lineno++;
+
+ start = line;
+#if INI_ALLOW_BOM
+ if (lineno == 1 && (unsigned char)start[0] == 0xEF &&
+ (unsigned char)start[1] == 0xBB &&
+ (unsigned char)start[2] == 0xBF) {
+ start += 3;
+ }
+#endif
+ start = lskip(rstrip(start));
+
+ if (*start == ';' || *start == '#') {
+ /* Per Python configparser, allow both ; and # comments at the
+ start of a line */
+ }
+#if INI_ALLOW_MULTILINE
+ else if (*prev_name && *start && start > line) {
+ /* Non-blank line with leading whitespace, treat as continuation
+ of previous name's value (as per Python configparser). */
+ if (!handler(user, section, prev_name, start) && !error)
+ error = lineno;
+ }
+#endif
+ else if (*start == '[') {
+ /* A "[section]" line */
+ end = find_chars_or_comment(start + 1, "]");
+ if (*end == ']') {
+ *end = '\0';
+ strncpy0(section, start + 1, sizeof(section));
+ *prev_name = '\0';
+ }
+ else if (!error) {
+ /* No ']' found on section line */
+ error = lineno;
+ }
+ }
+ else if (*start) {
+ /* Not a comment, must be a name[=:]value pair */
+ end = find_chars_or_comment(start, "=:");
+ if (*end == '=' || *end == ':') {
+ *end = '\0';
+ name = rstrip(start);
+ value = lskip(end + 1);
+#if INI_ALLOW_INLINE_COMMENTS
+ end = find_chars_or_comment(value, NULL);
+ if (*end)
+ *end = '\0';
+#endif
+ rstrip(value);
+
+ /* Valid name[=:]value pair found, call handler */
+ strncpy0(prev_name, name, sizeof(prev_name));
+ if (!handler(user, section, name, value) && !error)
+ error = lineno;
+ memset(value, 0, strlen(value));
+ }
+ else if (!error) {
+ /* No '=' or ':' found on name[=:]value line */
+ error = lineno;
+ }
+ }
+
+#if INI_STOP_ON_FIRST_ERROR
+ if (error)
+ break;
+#endif
+ }
+
+#if !INI_USE_STACK
+ free(line);
+#endif
+
+ return error;
+}
+
+/* See documentation in header file. */
+int ini_parse_file(FILE* file, ini_handler handler, void* user)
+{
+ return ini_parse_stream((ini_reader)fgets, file, handler, user);
+}
+
+/* See documentation in header file. */
+int ini_parse(const char* filename, ini_handler handler, void* user)
+{
+ FILE* file;
+ int error;
+
+ file = fopen(filename, "r");
+ if (!file)
+ return -1;
+ error = ini_parse_file(file, handler, user);
+ fclose(file);
+ return error;
+}
diff --git a/rootston/main.c b/rootston/main.c
new file mode 100644
index 00000000..9be2ff41
--- /dev/null
+++ b/rootston/main.c
@@ -0,0 +1,14 @@
+#include <wayland-server.h>
+#include <wlr/util/log.h>
+#include "rootston/config.h"
+#include "rootston/server.h"
+
+struct rootston root = { 0 };
+
+int main(int argc, char **argv) {
+ root.config = parse_args(argc, argv);
+ root.wl_display = wl_display_create();
+ root.wl_event_loop = wl_display_get_event_loop(root.wl_display);
+ wl_display_init_shm(root.wl_display);
+ return 0;
+}
diff --git a/rootston/meson.build b/rootston/meson.build
new file mode 100644
index 00000000..501fe17e
--- /dev/null
+++ b/rootston/meson.build
@@ -0,0 +1,7 @@
+executable(
+ 'rooston', [
+ 'main.c',
+ 'config.c',
+ 'ini.c',
+ ], dependencies: wlroots
+)