mirror of
https://codeberg.org/dnkl/foot.git
synced 2026-02-10 04:27:45 -05:00
758fd9fd58
We now create a copy of the config for each client, and updates it with the values passed from the client. Since we're not actually cloning it (and e.g. strdup() all strings etc) we can't call conf_destroy() to free it, but need to free just the strings we've replaced.
417 lines
12 KiB
C
417 lines
12 KiB
C
#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <ctype.h>
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#include <stdbool.h>
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#include <locale.h>
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#include <getopt.h>
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#include <signal.h>
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#include <errno.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/sysinfo.h>
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#include <fcntl.h>
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#include <fcft/fcft.h>
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#define LOG_MODULE "main"
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#define LOG_ENABLE_DBG 0
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#include "log.h"
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#include "config.h"
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#include "fdm.h"
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#include "render.h"
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#include "server.h"
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#include "shm.h"
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#include "terminal.h"
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#include "version.h"
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static volatile sig_atomic_t aborted = 0;
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static void
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sig_handler(int signo)
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{
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aborted = 1;
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}
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static void
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print_usage(const char *prog_name)
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{
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printf(
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"Usage: %s [OPTIONS]...\n"
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"Usage: %s [OPTIONS]... -- command\n"
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"\n"
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"Options:\n"
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" -c,--config=PATH load configuration from PATH (XDG_CONFIG_HOME/footrc)\n"
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" -f,--font=FONT comma separated list of fonts in fontconfig format (monospace)\n"
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" -t,--term=TERM value to set the environment variable TERM to (foot)\n"
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" --maximized start in maximized mode\n"
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" --fullscreen start in fullscreen mode\n"
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" --login-shell start shell as a login shell\n"
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" -g,--geometry=WIDTHxHEIGHT set initial width and height\n"
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" -s,--server[=PATH] run as a server (use 'footclient' to start terminals).\n"
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" Without PATH, XDG_RUNTIME_DIR/foot.sock will be used.\n"
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" --hold remain open after child process exits\n"
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" -p,--print-pid=FILE|FD print PID to file or FD (only applicable in server mode)\n"
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" -l,--log-colorize=[never|always|auto] enable/disable colorization of log output on stderr\n"
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" -s,--log-no-syslog disable syslog logging (only applicable in server mode)\n"
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" -v,--version show the version number and quit\n",
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prog_name, prog_name);
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}
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bool
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locale_is_utf8(void)
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{
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assert(strlen(u8"ö") == 2);
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wchar_t w;
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if (mbtowc(&w, u8"ö", 2) != 2)
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return false;
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if (w != U'ö')
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return false;
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return true;
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}
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struct shutdown_context {
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struct terminal **term;
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int exit_code;
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};
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static void
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term_shutdown_cb(void *data, int exit_code)
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{
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struct shutdown_context *ctx = data;
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*ctx->term = NULL;
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ctx->exit_code = exit_code;
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}
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static bool
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print_pid(const char *pid_file, bool *unlink_at_exit)
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{
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LOG_DBG("printing PID to %s", pid_file);
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errno = 0;
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char *end;
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int pid_fd = strtoul(pid_file, &end, 10);
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if (errno != 0 || *end != '\0') {
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if ((pid_fd = open(pid_file,
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O_WRONLY | O_CREAT | O_EXCL | O_CLOEXEC,
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S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH)) < 0) {
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LOG_ERRNO("%s: failed to open", pid_file);
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return false;
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} else
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*unlink_at_exit = true;
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}
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if (pid_fd >= 0) {
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char pid[32];
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snprintf(pid, sizeof(pid), "%u\n", getpid());
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ssize_t bytes = write(pid_fd, pid, strlen(pid));
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close(pid_fd);
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if (bytes < 0) {
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LOG_ERRNO("failed to write PID to FD=%u", pid_fd);
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return false;
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}
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LOG_DBG("wrote %zd bytes to FD=%d", bytes, pid_fd);
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return true;
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} else
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return false;
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}
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int
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main(int argc, char *const *argv)
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{
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int ret = EXIT_FAILURE;
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/* Startup notifications; we don't support it, but must ensure we
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* don't pass this on to programs launched by us */
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unsetenv("DESKTOP_STARTUP_ID");
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const char *const prog_name = argv[0];
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static const struct option longopts[] = {
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{"config", required_argument, NULL, 'c'},
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{"term", required_argument, NULL, 't'},
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{"login-shell", no_argument, NULL, 'L'},
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{"font", required_argument, NULL, 'f'},
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{"geometry", required_argument, NULL, 'g'},
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{"server", optional_argument, NULL, 's'},
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{"hold", no_argument, NULL, 'H'},
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{"maximized", no_argument, NULL, 'm'},
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{"fullscreen", no_argument, NULL, 'F'},
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{"presentation-timings", no_argument, NULL, 'P'}, /* Undocumented */
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{"print-pid", required_argument, NULL, 'p'},
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{"log-colorize", optional_argument, NULL, 'l'},
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{"log-no-syslog", no_argument, NULL, 'S'},
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{"version", no_argument, NULL, 'v'},
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{"help", no_argument, NULL, 'h'},
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{NULL, no_argument, NULL, 0},
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};
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const char *conf_path = NULL;
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const char *conf_term = NULL;
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bool login_shell = false;
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tll(char *) conf_fonts = tll_init();
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int conf_width = -1;
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int conf_height = -1;
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bool as_server = false;
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const char *conf_server_socket_path = NULL;
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bool presentation_timings = false;
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bool hold = false;
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bool maximized = false;
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bool fullscreen = false;
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bool unlink_pid_file = false;
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const char *pid_file = NULL;
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enum log_colorize log_colorize = LOG_COLORIZE_AUTO;
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bool log_syslog = true;
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while (true) {
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int c = getopt_long(argc, argv, "c:t:Lf:g:s::Pp:l::Svh", longopts, NULL);
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if (c == -1)
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break;
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switch (c) {
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case 'c':
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conf_path = optarg;
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break;
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case 't':
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conf_term = optarg;
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break;
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case 'L':
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login_shell = true;
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break;
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case 'f':
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tll_free_and_free(conf_fonts, free);
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for (char *font = strtok(optarg, ","); font != NULL; font = strtok(NULL, ",")) {
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/* Strip leading spaces */
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while (*font != '\0' && isspace(*font))
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font++;
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/* Strip trailing spaces */
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char *end = font + strlen(font);
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assert(*end == '\0');
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end--;
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while (end > font && isspace(*end))
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*(end--) = '\0';
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if (strlen(font) == 0)
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continue;
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tll_push_back(conf_fonts, strdup(font));
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}
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break;
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case 'g': {
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unsigned width, height;
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if (sscanf(optarg, "%ux%u", &width, &height) != 2 || width == 0 || height == 0) {
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fprintf(stderr, "error: invalid geometry: %s\n", optarg);
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return EXIT_FAILURE;
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}
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conf_width = width;
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conf_height = height;
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break;
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}
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case 's':
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as_server = true;
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if (optarg != NULL)
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conf_server_socket_path = optarg;
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break;
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case 'P':
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presentation_timings = true;
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break;
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case 'H':
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hold = true;
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break;
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case 'm':
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maximized = true;
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fullscreen = false;
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break;
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case 'F':
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fullscreen = true;
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maximized = false;
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break;
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case 'p':
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pid_file = optarg;
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break;
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case 'l':
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if (optarg == NULL || strcmp(optarg, "auto") == 0)
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log_colorize = LOG_COLORIZE_AUTO;
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else if (strcmp(optarg, "never") == 0)
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log_colorize = LOG_COLORIZE_NEVER;
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else if (strcmp(optarg, "always") == 0)
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log_colorize = LOG_COLORIZE_ALWAYS;
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else {
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fprintf(stderr, "%s: argument must be one of 'never', 'always' or 'auto'\n", optarg);
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return EXIT_FAILURE;
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}
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break;
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case 'S':
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log_syslog = false;
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break;
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case 'v':
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printf("foot version %s\n", FOOT_VERSION);
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return EXIT_SUCCESS;
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case 'h':
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print_usage(prog_name);
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return EXIT_SUCCESS;
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case '?':
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return EXIT_FAILURE;
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}
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}
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log_init(log_colorize, as_server && log_syslog,
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as_server ? LOG_FACILITY_DAEMON : LOG_FACILITY_USER, LOG_CLASS_WARNING);
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argc -= optind;
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argv += optind;
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LOG_INFO("version: %s", FOOT_VERSION);
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struct config conf = {NULL};
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if (!config_load(&conf, conf_path)) {
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config_free(conf);
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return ret;
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}
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setlocale(LC_ALL, "");
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if (!locale_is_utf8()) {
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LOG_ERR("locale is not UTF-8");
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return ret;
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}
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if (conf_term != NULL) {
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free(conf.term);
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conf.term = strdup(conf_term);
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}
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if (login_shell)
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conf.login_shell = true;
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if (tll_length(conf_fonts) > 0) {
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tll_free_and_free(conf.fonts, free);
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tll_foreach(conf_fonts, it)
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tll_push_back(conf.fonts, it->item);
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tll_free(conf_fonts);
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}
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if (conf_width > 0)
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conf.width = conf_width;
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if (conf_height > 0)
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conf.height = conf_height;
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if (conf_server_socket_path != NULL) {
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free(conf.server_socket_path);
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conf.server_socket_path = strdup(conf_server_socket_path);
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}
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if (maximized)
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conf.startup_mode = STARTUP_MAXIMIZED;
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else if (fullscreen)
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conf.startup_mode = STARTUP_FULLSCREEN;
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conf.presentation_timings = presentation_timings;
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conf.hold_at_exit = hold;
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struct fdm *fdm = NULL;
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struct wayland *wayl = NULL;
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struct renderer *renderer = NULL;
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struct terminal *term = NULL;
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struct server *server = NULL;
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struct shutdown_context shutdown_ctx = {.term = &term, .exit_code = EXIT_FAILURE};
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char *cwd = NULL;
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{
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errno = 0;
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size_t buf_len = 1024;
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do {
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cwd = realloc(cwd, buf_len);
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if (getcwd(cwd, buf_len) == NULL && errno != ERANGE) {
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LOG_ERRNO("failed to get current working directory");
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goto out;
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}
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buf_len *= 2;
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} while (errno == ERANGE);
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}
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if ((fdm = fdm_init()) == NULL)
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goto out;
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if ((wayl = wayl_init(&conf, fdm)) == NULL)
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goto out;
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if ((renderer = render_init(fdm, wayl)) == NULL)
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goto out;
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if (!as_server && (term = term_init(
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&conf, fdm, wayl, "foot", cwd, argc, argv,
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&term_shutdown_cb, &shutdown_ctx)) == NULL) {
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free(cwd);
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goto out;
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}
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free(cwd);
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if (as_server && (server = server_init(&conf, fdm, wayl)) == NULL)
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goto out;
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/* Remember to restore signals in slave */
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const struct sigaction sa = {.sa_handler = &sig_handler};
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if (sigaction(SIGINT, &sa, NULL) < 0 || sigaction(SIGTERM, &sa, NULL) < 0) {
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LOG_ERRNO("failed to register signal handlers");
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goto out;
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}
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if (sigaction(SIGHUP, &(struct sigaction){.sa_handler = SIG_IGN}, NULL) < 0) {
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LOG_ERRNO("failed to ignore SIGHUP");
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goto out;
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}
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if (as_server)
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LOG_INFO("running as server; launch terminals by running footclient");
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if (as_server && pid_file != NULL) {
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if (!print_pid(pid_file, &unlink_pid_file))
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goto out;
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}
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while (!aborted && (as_server || tll_length(wayl->terms) > 0)) {
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if (!fdm_poll(fdm))
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break;
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}
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ret = aborted || tll_length(wayl->terms) == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
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out:
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server_destroy(server);
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term_destroy(term);
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shm_fini();
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render_destroy(renderer);
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wayl_destroy(wayl);
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fdm_destroy(fdm);
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config_free(conf);
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if (unlink_pid_file)
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unlink(pid_file);
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LOG_INFO("goodbye");
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log_deinit();
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return ret == EXIT_SUCCESS && !as_server ? shutdown_ctx.exit_code : ret;
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}
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