| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * Common code for error reporting. | ||
| 3 | * Copyright © 2009-2026, albinoloverats ~ Software Development | ||
| 4 | * email: webmaster@albinoloverats.net | ||
| 5 | * | ||
| 6 | * This program is free software: you can redistribute it and/or modify | ||
| 7 | * it under the terms of the GNU General Public License as published by | ||
| 8 | * the Free Software Foundation, either version 3 of the License, or | ||
| 9 | * (at your option) any later version. | ||
| 10 | * | ||
| 11 | * This program is distributed in the hope that it will be useful, | ||
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| 14 | * GNU General Public License for more details. | ||
| 15 | * | ||
| 16 | * You should have received a copy of the GNU General Public License | ||
| 17 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | ||
| 18 | * | ||
| 19 | */ | ||
| 20 | |||
| 21 | #include <errno.h> | ||
| 22 | #include <signal.h> | ||
| 23 | |||
| 24 | #include <stdio.h> | ||
| 25 | #include <stdlib.h> | ||
| 26 | #include <unistd.h> | ||
| 27 | #include <stdarg.h> | ||
| 28 | |||
| 29 | #if !defined _WIN32 && !defined __CYGWIN__ && !defined __FreeBSD__ | ||
| 30 | #include <execinfo.h> | ||
| 31 | #endif | ||
| 32 | |||
| 33 | #include <stdint.h> | ||
| 34 | #include <ctype.h> | ||
| 35 | #include <string.h> | ||
| 36 | #include <stdbool.h> | ||
| 37 | |||
| 38 | #include "error.h" | ||
| 39 | #include "non-gnu.h" | ||
| 40 | |||
| 41 | #define ERROR_DIVIDE "\n********** ********** ********** **********\n\n" | ||
| 42 | #define ERROR_DIVIDE_LEN 46 | ||
| 43 | #define ERROR_CURSOR "\e[?25h\n" | ||
| 44 | #define ERROR_CURSOR_LEN 7 | ||
| 45 | |||
| 46 | #ifdef BUILD_GUI | ||
| 47 | static void error_gui_alert(const char * const restrict); | ||
| 48 | |||
| 49 | static GtkWidget *error_gui_window; | ||
| 50 | static GtkWidget *error_gui_message; | ||
| 51 | #endif | ||
| 52 | |||
| 53 | extern void on_error(int) __attribute__((noreturn)); | ||
| 54 | |||
| 55 | static char *int_to_ascii(int); | ||
| 56 | |||
| 57 | static volatile sig_atomic_t error_inited = 0; | ||
| 58 | |||
| 59 | static volatile sig_atomic_t fatal_error_in_progress = 0; | ||
| 60 | |||
| 61 | ✗ | extern void on_error(int s) | |
| 62 | { | ||
| 63 | ✗ | if (fatal_error_in_progress) | |
| 64 | ✗ | raise(s); | |
| 65 | ✗ | fatal_error_in_progress = 1; | |
| 66 | |||
| 67 | ✗ | write(STDERR_FILENO, ERROR_CURSOR, ERROR_CURSOR_LEN); | |
| 68 | ✗ | write(STDERR_FILENO, ERROR_DIVIDE, ERROR_DIVIDE_LEN); | |
| 69 | |||
| 70 | ✗ | char m[32] = { 0x0 }; | |
| 71 | ✗ | strcat(m, "Received fatal signal ["); | |
| 72 | ✗ | strcat(m, int_to_ascii(s)); | |
| 73 | ✗ | strcat(m, "]"); | |
| 74 | ✗ | psignal(s, m); | |
| 75 | |||
| 76 | #ifdef BUILD_GUI | ||
| 77 | error_gui_alert(m); | ||
| 78 | #endif | ||
| 79 | |||
| 80 | #if !defined _WIN32 && !defined __CYGWIN__ && !defined __FreeBSD__ | ||
| 81 | void *bt[BACKTRACE_BUFFER_LIMIT]; | ||
| 82 | ✗ | int c = backtrace(bt, BACKTRACE_BUFFER_LIMIT); | |
| 83 | ✗ | char **sym = backtrace_symbols(bt, c); | |
| 84 | ✗ | if (sym) | |
| 85 | ✗ | for (int i = 0; i < c; i++) | |
| 86 | { | ||
| 87 | ✗ | write(STDERR_FILENO, sym[i], strlen(sym[i])); | |
| 88 | ✗ | write(STDERR_FILENO, "\n", 1); | |
| 89 | } | ||
| 90 | #endif | ||
| 91 | |||
| 92 | ✗ | write(STDERR_FILENO, ERROR_DIVIDE, ERROR_DIVIDE_LEN); | |
| 93 | |||
| 94 | #ifndef __APPLE__ | ||
| 95 | ✗ | signal(s, SIG_DFL); | |
| 96 | ✗ | raise(s); | |
| 97 | ✗ | __builtin_unreachable(); | |
| 98 | #else | ||
| 99 | exit(errno); | ||
| 100 | #endif | ||
| 101 | } | ||
| 102 | |||
| 103 | ✗ | extern void error_init(void) | |
| 104 | { | ||
| 105 | ✗ | if (error_inited) | |
| 106 | ✗ | return; | |
| 107 | |||
| 108 | ✗ | signal(SIGILL, on_error); | |
| 109 | ✗ | signal(SIGSEGV, on_error); | |
| 110 | ✗ | signal(SIGBUS, on_error); | |
| 111 | ✗ | signal(SIGABRT, on_error); | |
| 112 | ✗ | signal(SIGSYS, on_error); | |
| 113 | //signal(SIGPROF, on_error); | ||
| 114 | |||
| 115 | ✗ | error_inited = 1; | |
| 116 | |||
| 117 | ✗ | return; | |
| 118 | } | ||
| 119 | |||
| 120 | 9 | extern void die(const char * const restrict s, ...) | |
| 121 | { | ||
| 122 | 9 | int ex = errno; | |
| 123 | 9 | char *d = NULL; | |
| 124 | va_list ap; | ||
| 125 | 9 | va_start(ap, s); | |
| 126 | #ifndef _WIN32 | ||
| 127 | 9 | vasprintf(&d, s, ap); | |
| 128 | #else | ||
| 129 | uint8_t l = 0xFF; | ||
| 130 | if ((d = calloc(l, sizeof l))) | ||
| 131 | vsnprintf(d, l - 1, s, ap); | ||
| 132 | #endif | ||
| 133 | 9 | fprintf(stderr, "%s", d); | |
| 134 | 9 | va_end(ap); | |
| 135 | 9 | fprintf(stderr, "\n"); | |
| 136 | #ifdef BUILD_GUI | ||
| 137 | error_gui_alert(d); | ||
| 138 | #endif | ||
| 139 | 9 | free(d); | |
| 140 |
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9 | if (ex) |
| 141 | { | ||
| 142 | 8 | char * const restrict e = strdup(strerror(ex)); | |
| 143 |
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178 | for (uint32_t i = 0; e && i < strlen(e); i++) |
| 144 | 170 | e[i] = tolower((unsigned char)e[i]); | |
| 145 | 8 | fprintf(stderr, "%s\n", e); | |
| 146 | 8 | free(e); | |
| 147 | #if !defined _WIN32 && !defined __CYGWIN__ && !defined __FreeBSD__ | ||
| 148 | void *bt[BACKTRACE_BUFFER_LIMIT]; | ||
| 149 | 8 | int c = backtrace(bt, BACKTRACE_BUFFER_LIMIT); | |
| 150 | 8 | char **sym = backtrace_symbols(bt, c); | |
| 151 |
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8 | if (sym) |
| 152 | { | ||
| 153 |
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79 | for (int i = 0; i < c; i++) |
| 154 | 71 | fprintf(stderr, "%s\n", sym[i]); | |
| 155 | 8 | free(sym); | |
| 156 | } | ||
| 157 | #endif | ||
| 158 | } | ||
| 159 | 9 | exit(ex); | |
| 160 | } | ||
| 161 | |||
| 162 | #ifdef BUILD_GUI | ||
| 163 | extern void error_gui_init(GtkWidget *w, GtkWidget *m) | ||
| 164 | { | ||
| 165 | error_init(); | ||
| 166 | error_gui_window = w; | ||
| 167 | error_gui_message = m; | ||
| 168 | } | ||
| 169 | |||
| 170 | G_MODULE_EXPORT gboolean error_gui_close(void *w, void *d) | ||
| 171 | { | ||
| 172 | (void)w; | ||
| 173 | (void)d; | ||
| 174 | gtk_widget_hide(error_gui_window); | ||
| 175 | return TRUE; | ||
| 176 | } | ||
| 177 | |||
| 178 | static void error_gui_alert(const char * const restrict msg) | ||
| 179 | { | ||
| 180 | if (error_gui_window) | ||
| 181 | { | ||
| 182 | gtk_label_set_text((GtkLabel *)error_gui_message, msg); | ||
| 183 | gtk_dialog_run((GtkDialog *)error_gui_window); | ||
| 184 | } | ||
| 185 | return; | ||
| 186 | } | ||
| 187 | #endif | ||
| 188 | |||
| 189 | #define INT_DIGITS 19 /* enough for 64 bit integer */ | ||
| 190 | |||
| 191 | ✗ | static char *int_to_ascii(int i) | |
| 192 | { | ||
| 193 | /* Room for INT_DIGITS digits, - and '\0' */ | ||
| 194 | static char buf[INT_DIGITS + 2]; | ||
| 195 | ✗ | char *p = buf + INT_DIGITS + 1; /* points to terminating '\0' */ | |
| 196 | ✗ | if (i >= 0) | |
| 197 | do | ||
| 198 | { | ||
| 199 | ✗ | *--p = '0' + (i % 10); | |
| 200 | ✗ | i /= 10; | |
| 201 | } | ||
| 202 | ✗ | while (i != 0); | |
| 203 | else | ||
| 204 | { /* i < 0 */ | ||
| 205 | do | ||
| 206 | { | ||
| 207 | ✗ | *--p = '0' - (i % 10); | |
| 208 | ✗ | i /= 10; | |
| 209 | } | ||
| 210 | ✗ | while (i != 0); | |
| 211 | ✗ | *--p = '-'; | |
| 212 | } | ||
| 213 | ✗ | return p; | |
| 214 | } | ||
| 215 |