1 7ea8226e 2021-09-06 xhr /*
  2 7ea8226e 2021-09-06 xhr  * Copyright (c) 2021 Matthias Schmidt <xhr@giessen.ccc.de>
  3 7ea8226e 2021-09-06 xhr  *
  4 7ea8226e 2021-09-06 xhr  * Permission to use, copy, modify, and distribute this software for any
  5 7ea8226e 2021-09-06 xhr  * purpose with or without fee is hereby granted, provided that the above
  6 7ea8226e 2021-09-06 xhr  * copyright notice and this permission notice appear in all copies.
  7 7ea8226e 2021-09-06 xhr  *
  8 7ea8226e 2021-09-06 xhr  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  9 7ea8226e 2021-09-06 xhr  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 10 7ea8226e 2021-09-06 xhr  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 11 7ea8226e 2021-09-06 xhr  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 12 7ea8226e 2021-09-06 xhr  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 13 7ea8226e 2021-09-06 xhr  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 14 7ea8226e 2021-09-06 xhr  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 15 7ea8226e 2021-09-06 xhr  */
 16 7ea8226e 2021-09-06 xhr 
 17 180e58f6 2021-09-06 xhr #include <sys/stat.h>
 18 180e58f6 2021-09-06 xhr #include <sys/types.h>
 19 180e58f6 2021-09-06 xhr 
 20 5e7ac800 2021-09-01 xhr #include <limits.h>
 21 40b0885d 2021-09-06 xhr #include <signal.h>
 22 726131df 2021-09-01 xhr #include <stdarg.h>
 23 13a0bc68 2021-08-31 xhr #include <stdio.h>
 24 13a0bc68 2021-08-31 xhr #include <stdlib.h>
 25 13a0bc68 2021-08-31 xhr #include <string.h>
 26 a20c5f9c 2021-09-02 xhr #include <time.h>
 27 726131df 2021-09-01 xhr #include <unistd.h>
 28 13a0bc68 2021-08-31 xhr 
 29 944c5da4 2021-09-01 xhr #include <readline/readline.h>
 30 944c5da4 2021-09-01 xhr #include <readline/history.h>
 31 944c5da4 2021-09-01 xhr 
 32 63354cc5 2021-09-01 xhr #include "isscrolls.h"
 33 13a0bc68 2021-08-31 xhr 
 34 e340b5dc 2021-09-09 xhr static char prompt[MAX_PROMPT_LEN];
 35 180e58f6 2021-09-06 xhr char isscrolls_dir[_POSIX_PATH_MAX];
 36 180e58f6 2021-09-06 xhr 
 37 726131df 2021-09-01 xhr static int debug = 0;
 38 af92ffb1 2021-09-15 xhr static int color = 0;
 39 5e7ac800 2021-09-01 xhr 
 40 40b0885d 2021-09-06 xhr static void
 41 40b0885d 2021-09-06 xhr signal_handler(int signal)
 42 13a0bc68 2021-08-31 xhr {
 43 40b0885d 2021-09-06 xhr 	switch (signal) {
 44 40b0885d 2021-09-06 xhr 		case SIGINT:
 45 40b0885d 2021-09-06 xhr 		case SIGTERM:
 46 40b0885d 2021-09-06 xhr 			shutdown();
 47 40b0885d 2021-09-06 xhr 			break;
 48 40b0885d 2021-09-06 xhr 		default:
 49 40b0885d 2021-09-06 xhr 			log_errx(1, "Unknown signal");
 50 40b0885d 2021-09-06 xhr 	}
 51 13a0bc68 2021-08-31 xhr }
 52 13a0bc68 2021-08-31 xhr 
 53 2ba8efca 2021-09-05 xhr void
 54 a844ca20 2021-09-05 xhr show_banner(__attribute__((unused)) char *unused)
 55 2ba8efca 2021-09-05 xhr {
 56 4cf6dd8f 2021-09-15 xhr 	pm(GREEN, "\n██▓  ██████   ██████  ▄████▄   ██▀███   ▒█████   ██▓     ██▓      ██████\n");
 57 4cf6dd8f 2021-09-15 xhr 	pm(GREEN, "▓██▒▒██    ▒ ▒██    ▒ ▒██▀ ▀█  ▓██ ▒ ██▒▒██▒  ██▒▓██▒    ▓██▒    ▒██    ▒\n");
 58 4cf6dd8f 2021-09-15 xhr 	pm(GREEN, "▒██▒░ ▓██▄   ░ ▓██▄   ▒▓█    ▄ ▓██ ░▄█ ▒▒██░  ██▒▒██░    ▒██░    ░ ▓██▄\n");
 59 4cf6dd8f 2021-09-15 xhr 	pm(GREEN, "░██░  ▒   ██▒  ▒   ██▒▒▓▓▄ ▄██▒▒██▀▀█▄  ▒██   ██░▒██░    ▒██░      ▒   ██▒\n");
 60 4cf6dd8f 2021-09-15 xhr 	pm(GREEN, "░██░▒██████▒▒▒██████▒▒▒ ▓███▀ ░░██▓ ▒██▒░ ████▓▒░░██████▒░██████▒▒██████▒▒\n");
 61 4cf6dd8f 2021-09-15 xhr 	pm(GREEN, "░▓  ▒ ▒▓▒ ▒ ░▒ ▒▓▒ ▒ ░░ ░▒ ▒  ░░ ▒▓ ░▒▓░░ ▒░▒░▒░ ░ ▒░▓  ░░ ▒░▓  ░▒ ▒▓▒ ▒ ░\n");
 62 4cf6dd8f 2021-09-15 xhr 	pm(GREEN, " ▒ ░░ ░▒  ░ ░░ ░▒  ░ ░  ░  ▒     ░▒ ░ ▒░  ░ ▒ ▒░ ░ ░ ▒  ░░ ░ ▒  ░░ ░▒  ░ ░\n");
 63 4cf6dd8f 2021-09-15 xhr 	pm(GREEN, " ▒ ░░  ░  ░  ░  ░  ░  ░          ░░   ░ ░ ░ ░ ▒    ░ ░     ░ ░   ░  ░  ░\n");
 64 4cf6dd8f 2021-09-15 xhr 	pm(GREEN, " ░        ░        ░  ░ ░         ░         ░ ░      ░  ░    ░  ░      ░\n");
 65 4cf6dd8f 2021-09-15 xhr 	pm(GREEN, "                      ░\n");
 66 834b5df8 2021-09-06 xhr 	printf("                                                            Version %s\n\n", VERSION);
 67 834b5df8 2021-09-06 xhr 	printf("\tSimple player toolkit for the Ironsworn tabletop RPG\n");
 68 2ba8efca 2021-09-05 xhr 	printf("\tBy Matthias Schmidt - https://mastodon.social/@_xhr_\n\n");
 69 5b446e52 2021-09-05 xhr 	printf("Enter 'help' for available commands\n\n");
 70 2ba8efca 2021-09-05 xhr }
 71 2ba8efca 2021-09-05 xhr 
 72 13a0bc68 2021-08-31 xhr int
 73 63354cc5 2021-09-01 xhr main(int argc, char **argv)
 74 13a0bc68 2021-08-31 xhr {
 75 63354cc5 2021-09-01 xhr 	char *line, *res;
 76 726131df 2021-09-01 xhr 	int ch;
 77 13a0bc68 2021-08-31 xhr 
 78 a20c5f9c 2021-09-02 xhr 	/*
 79 8f2dede1 2021-09-02 xhr 	 * Seed the PRNG with the current time of the day.  This is not fine
 80 8f2dede1 2021-09-02 xhr 	 * for a security critical application, for rolling dice it is
 81 a20c5f9c 2021-09-02 xhr 	 */
 82 a20c5f9c 2021-09-02 xhr 	srandom(time(NULL));
 83 a20c5f9c 2021-09-02 xhr 
 84 af92ffb1 2021-09-15 xhr 	while ((ch = getopt(argc, argv, "cd")) != -1) {
 85 726131df 2021-09-01 xhr 		switch (ch) {
 86 af92ffb1 2021-09-15 xhr 		case 'c':
 87 af92ffb1 2021-09-15 xhr 			color = 1;
 88 af92ffb1 2021-09-15 xhr 			break;
 89 726131df 2021-09-01 xhr 		case 'd':
 90 726131df 2021-09-01 xhr 			debug = 1;
 91 726131df 2021-09-01 xhr 			break;
 92 726131df 2021-09-01 xhr 		}
 93 726131df 2021-09-01 xhr 	}
 94 726131df 2021-09-01 xhr 
 95 726131df 2021-09-01 xhr 	argc -= optind;
 96 726131df 2021-09-01 xhr 	argv += optind;
 97 726131df 2021-09-01 xhr 
 98 180e58f6 2021-09-06 xhr 	setup_base_dir();
 99 63354cc5 2021-09-01 xhr 
100 180e58f6 2021-09-06 xhr 	initialize_readline(isscrolls_dir);
101 180e58f6 2021-09-06 xhr 
102 2ba8efca 2021-09-05 xhr 	show_banner(NULL);
103 2ba8efca 2021-09-05 xhr 
104 40b0885d 2021-09-06 xhr 	if (signal(SIGINT, signal_handler) == SIG_ERR)
105 40b0885d 2021-09-06 xhr 		log_errx(1, "signal");
106 40b0885d 2021-09-06 xhr 	if (signal(SIGTERM, signal_handler) == SIG_ERR)
107 40b0885d 2021-09-06 xhr 		log_errx(1, "signal");
108 40b0885d 2021-09-06 xhr 
109 875fbef1 2021-09-06 xhr 	sandbox(isscrolls_dir);
110 875fbef1 2021-09-06 xhr 
111 142b407e 2021-09-07 xhr 	load_characters_list();
112 ad45eeda 2021-09-07 xhr 
113 e952d8d3 2021-09-06 xhr 	set_prompt("> ");
114 13a0bc68 2021-08-31 xhr 	while (1) {
115 e952d8d3 2021-09-06 xhr 		line = readline(prompt);
116 63354cc5 2021-09-01 xhr 		if (line == NULL)
117 63354cc5 2021-09-01 xhr 			continue;
118 63354cc5 2021-09-01 xhr 		res = stripwhite(line);
119 13a0bc68 2021-08-31 xhr 
120 63354cc5 2021-09-01 xhr 		if (*res) {
121 63354cc5 2021-09-01 xhr 			add_history(res);
122 63354cc5 2021-09-01 xhr 			execute_command(res);
123 13a0bc68 2021-08-31 xhr 		}
124 63354cc5 2021-09-01 xhr 
125 63354cc5 2021-09-01 xhr 		free(line);
126 13a0bc68 2021-08-31 xhr 	}
127 13a0bc68 2021-08-31 xhr 
128 40b0885d 2021-09-06 xhr 	shutdown();
129 40b0885d 2021-09-06 xhr 
130 13a0bc68 2021-08-31 xhr 	return 0;
131 13a0bc68 2021-08-31 xhr }
132 63354cc5 2021-09-01 xhr 
133 726131df 2021-09-01 xhr void
134 e952d8d3 2021-09-06 xhr set_prompt(const char *p)
135 e952d8d3 2021-09-06 xhr {
136 e952d8d3 2021-09-06 xhr 	if (p == NULL || strlen(p) == 0)
137 e952d8d3 2021-09-06 xhr 		return;
138 e952d8d3 2021-09-06 xhr 
139 e952d8d3 2021-09-06 xhr 	snprintf(prompt, sizeof(prompt), "%s", p);
140 e952d8d3 2021-09-06 xhr }
141 e952d8d3 2021-09-06 xhr 
142 e952d8d3 2021-09-06 xhr void
143 875fbef1 2021-09-06 xhr sandbox(const char *dir)
144 875fbef1 2021-09-06 xhr {
145 875fbef1 2021-09-06 xhr #ifdef __OpenBSD__
146 875fbef1 2021-09-06 xhr 	if (unveil(_PATH_SHARE_DIR, "r") == -1)
147 875fbef1 2021-09-06 xhr 		log_errx(1, "unveil");
148 875fbef1 2021-09-06 xhr 	if (unveil(dir, "rwc") == -1)
149 875fbef1 2021-09-06 xhr 		log_errx(1, "unveil");
150 875fbef1 2021-09-06 xhr 	if (unveil(NULL, NULL) == -1)
151 875fbef1 2021-09-06 xhr 		log_errx(1, "unveil");
152 875fbef1 2021-09-06 xhr 
153 875fbef1 2021-09-06 xhr 	if (pledge("stdio rpath wpath cpath tty", NULL) == -1)
154 875fbef1 2021-09-06 xhr 		log_errx(1, "pledge");
155 875fbef1 2021-09-06 xhr #endif /* __OpenBSD__ */
156 875fbef1 2021-09-06 xhr }
157 875fbef1 2021-09-06 xhr 
158 875fbef1 2021-09-06 xhr void
159 40b0885d 2021-09-06 xhr cmd_quit(__attribute__((unused)) char *unused)
160 40b0885d 2021-09-06 xhr {
161 40b0885d 2021-09-06 xhr 	shutdown();
162 40b0885d 2021-09-06 xhr }
163 40b0885d 2021-09-06 xhr 
164 40b0885d 2021-09-06 xhr void
165 40b0885d 2021-09-06 xhr shutdown()
166 40b0885d 2021-09-06 xhr {
167 40b0885d 2021-09-06 xhr 	char hist_path[_POSIX_PATH_MAX];
168 40b0885d 2021-09-06 xhr 
169 142b407e 2021-09-07 xhr 	save_current_character();
170 142b407e 2021-09-07 xhr 
171 40b0885d 2021-09-06 xhr 	snprintf(hist_path, _POSIX_PATH_MAX, "%s/history", isscrolls_dir);
172 40b0885d 2021-09-06 xhr 
173 40b0885d 2021-09-06 xhr 	log_debug("Writing history to %s\n", hist_path);
174 40b0885d 2021-09-06 xhr 	write_history(hist_path);
175 40b0885d 2021-09-06 xhr 
176 40b0885d 2021-09-06 xhr 	exit(0);
177 40b0885d 2021-09-06 xhr }
178 40b0885d 2021-09-06 xhr 
179 40b0885d 2021-09-06 xhr void
180 180e58f6 2021-09-06 xhr setup_base_dir()
181 180e58f6 2021-09-06 xhr {
182 180e58f6 2021-09-06 xhr 	struct stat sb;
183 180e58f6 2021-09-06 xhr 	char *home, *xdg_home;
184 180e58f6 2021-09-06 xhr 
185 180e58f6 2021-09-06 xhr 	if ((xdg_home = getenv("XDG_CONFIG_HOME")) != NULL) {
186 0d49d28e 2021-09-06 xhr 		snprintf(isscrolls_dir, _POSIX_PATH_MAX, "%s/isscrolls", xdg_home);
187 180e58f6 2021-09-06 xhr 	} else if ((home = getenv("HOME")) != NULL) {
188 0d49d28e 2021-09-06 xhr 		snprintf(isscrolls_dir, _POSIX_PATH_MAX, "%s/.isscrolls", home);
189 180e58f6 2021-09-06 xhr 	} else {
190 180e58f6 2021-09-06 xhr 		log_errx(1, "Neither $XDG_CONFIG_HOME nor $HOME is set!");
191 180e58f6 2021-09-06 xhr 	}
192 180e58f6 2021-09-06 xhr 
193 180e58f6 2021-09-06 xhr 	if (stat(isscrolls_dir, &sb) == 0 && S_ISDIR(sb.st_mode)) {
194 180e58f6 2021-09-06 xhr 		log_debug("%s already exists\n", isscrolls_dir);
195 180e58f6 2021-09-06 xhr 	} else {
196 180e58f6 2021-09-06 xhr 		log_debug("%s does not exists.  Attempt to create it\n", isscrolls_dir);
197 180e58f6 2021-09-06 xhr 		if (mkdir(isscrolls_dir, 0755) == -1) {
198 180e58f6 2021-09-06 xhr 			log_errx(1, "Cannot create %s directory\n", isscrolls_dir);
199 180e58f6 2021-09-06 xhr 		}
200 180e58f6 2021-09-06 xhr 	}
201 180e58f6 2021-09-06 xhr }
202 180e58f6 2021-09-06 xhr 
203 180e58f6 2021-09-06 xhr void
204 726131df 2021-09-01 xhr log_debug(const char *fmt, ...)
205 726131df 2021-09-01 xhr {
206 726131df 2021-09-01 xhr 	va_list ap;
207 63354cc5 2021-09-01 xhr 
208 726131df 2021-09-01 xhr 	if (debug == 0)
209 726131df 2021-09-01 xhr 		return;
210 726131df 2021-09-01 xhr 
211 726131df 2021-09-01 xhr 	va_start(ap, fmt);
212 29ba21d7 2021-09-06 xhr 	fprintf(stdout, "[*] ");
213 726131df 2021-09-01 xhr 	vfprintf(stdout, fmt, ap);
214 726131df 2021-09-01 xhr 	va_end(ap);
215 726131df 2021-09-01 xhr }
216 1d916766 2021-09-01 xhr 
217 1d916766 2021-09-01 xhr void
218 1d916766 2021-09-01 xhr log_errx(int prio, const char *fmt, ...)
219 1d916766 2021-09-01 xhr {
220 1d916766 2021-09-01 xhr 	va_list ap;
221 1d916766 2021-09-01 xhr 
222 1d916766 2021-09-01 xhr 	va_start(ap, fmt);
223 1d916766 2021-09-01 xhr 	vfprintf(stderr, fmt, ap);
224 1d916766 2021-09-01 xhr 	va_end(ap);
225 1d916766 2021-09-01 xhr 
226 64d52bc9 2021-09-16 xhr 	shutdown();
227 1d916766 2021-09-01 xhr }
228 b49c8139 2021-09-06 xhr 
229 af92ffb1 2021-09-15 xhr void
230 af92ffb1 2021-09-15 xhr pm(int what, const char *fmt, ...)
231 af92ffb1 2021-09-15 xhr {
232 af92ffb1 2021-09-15 xhr 	va_list ap;
233 af92ffb1 2021-09-15 xhr 
234 af92ffb1 2021-09-15 xhr 	va_start(ap, fmt);
235 af92ffb1 2021-09-15 xhr 	if (color == 1) {
236 af92ffb1 2021-09-15 xhr 		switch (what) {
237 af92ffb1 2021-09-15 xhr 		case RED:
238 af92ffb1 2021-09-15 xhr 			fprintf(stdout, ANSI_COLOR_RED);
239 af92ffb1 2021-09-15 xhr 			break;
240 af92ffb1 2021-09-15 xhr 		case YELLOW:
241 af92ffb1 2021-09-15 xhr 			fprintf(stdout, ANSI_COLOR_YELLOW);
242 af92ffb1 2021-09-15 xhr 			break;
243 af92ffb1 2021-09-15 xhr 		case GREEN:
244 af92ffb1 2021-09-15 xhr 			fprintf(stdout, ANSI_COLOR_GREEN);
245 af92ffb1 2021-09-15 xhr 			break;
246 af92ffb1 2021-09-15 xhr 		default:
247 af92ffb1 2021-09-15 xhr 			break;
248 af92ffb1 2021-09-15 xhr 		}
249 af92ffb1 2021-09-15 xhr 	}
250 af92ffb1 2021-09-15 xhr 
251 af92ffb1 2021-09-15 xhr 	vfprintf(stdout, fmt, ap);
252 af92ffb1 2021-09-15 xhr 	if (color == 1)
253 af92ffb1 2021-09-15 xhr 		fprintf(stdout, ANSI_COLOR_RESET);
254 af92ffb1 2021-09-15 xhr 	va_end(ap);
255 af92ffb1 2021-09-15 xhr }
256 af92ffb1 2021-09-15 xhr 
257 b49c8139 2021-09-06 xhr const char*
258 b49c8139 2021-09-06 xhr get_isscrolls_dir()
259 b49c8139 2021-09-06 xhr {
260 b49c8139 2021-09-06 xhr 	return isscrolls_dir;
261 b49c8139 2021-09-06 xhr }