diff options
Diffstat (limited to 'rootston')
| -rw-r--r-- | rootston/config.c | 269 | ||||
| -rw-r--r-- | rootston/ini.c | 195 | ||||
| -rw-r--r-- | rootston/main.c | 14 | ||||
| -rw-r--r-- | rootston/meson.build | 7 |
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 +) |