mirror of
https://github.com/tsl0922/ttyd.git
synced 2025-12-25 13:14:18 +01:00
144 lines
3.7 KiB
C
144 lines
3.7 KiB
C
#define _GNU_SOURCE
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdbool.h>
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#include <ctype.h>
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#include <string.h>
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#include <signal.h>
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#ifdef __linux__
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// https://github.com/karelzak/util-linux/blob/master/misc-utils/kill.c
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const char *sys_signame[NSIG] = {
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"zero", "HUP", "INT", "QUIT", "ILL", "TRAP", "ABRT", "UNUSED",
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"FPE", "KILL", "USR1", "SEGV", "USR2", "PIPE", "ALRM", "TERM",
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"STKFLT","CHLD", "CONT", "STOP", "TSTP", "TTIN", "TTOU", "URG",
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"XCPU", "XFSZ", "VTALRM","PROF", "WINCH", "IO", "PWR", "SYS", NULL
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};
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#endif
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#if defined(_WIN32) || defined(__CYGWIN__)
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#include <windows.h>
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#include <shellapi.h>
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// https://github.com/mirror/newlib-cygwin/blob/master/winsup/cygwin/strsig.cc
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#ifndef NSIG
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#define NSIG 33
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#endif
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const char *sys_signame[NSIG] = {
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"zero", "HUP", "INT", "QUIT", "ILL", "TRAP", "IOT", "EMT",
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"FPE", "KILL", "BUS", "SEGV", "SYS", "PIPE", "ALRM", "TERM",
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"URG", "STOP", "TSTP", "CONT", "CHLD", "TTIN", "TTOU", "IO",
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"XCPU", "XFSZ", "VTALRM","PROF", "WINCH", "PWR", "USR1", "USR2", NULL
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};
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#endif
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void *
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xmalloc(size_t size) {
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if (size == 0)
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return NULL;
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void *p = malloc(size);
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if (!p)
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abort();
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return p;
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}
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void *
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xrealloc(void *p, size_t size) {
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if ((size == 0) && (p == NULL))
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return NULL;
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p = realloc(p, size);
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if (!p)
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abort();
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return p;
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}
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char *
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uppercase(char *str) {
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int i = 0;
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do {
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str[i] = (char) toupper(str[i]);
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} while (str[i++] != '\0');
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return str;
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}
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bool
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endswith(const char *str, const char *suffix) {
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size_t str_len = strlen(str);
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size_t suffix_len = strlen(suffix);
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return str_len > suffix_len && !strcmp(str + (str_len - suffix_len), suffix);
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}
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int
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get_sig_name(int sig, char *buf) {
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int n = sprintf(buf, "SIG%s", sig < NSIG ? sys_signame[sig] : "unknown");
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uppercase(buf);
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return n;
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}
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int
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get_sig(const char *sig_name) {
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if (strlen(sig_name) <= 3 || strcasestr(sig_name, "sig") == NULL) {
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return -1;
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}
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for (int sig = 1; sig < NSIG; sig++) {
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const char *name = sys_signame[sig];
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if (name != NULL && strcasecmp(name, sig_name + 3) == 0)
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return sig;
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}
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return -1;
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}
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void print_sig_list() {
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char name[30];
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for (int sig = 1; sig < NSIG; sig++) {
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if (sys_signame[sig] != NULL) {
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strcpy(name, sys_signame[sig]);
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printf("%2d) SIG%s (%s)\n", sig, uppercase(name), strsignal(sig));
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}
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}
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}
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int
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open_uri(char *uri) {
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#ifdef __APPLE__
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char command[256];
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sprintf(command, "open %s > /dev/null 2>&1", uri);
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return system(command);
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#elif defined(_WIN32) || defined(__CYGWIN__)
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return ShellExecute(0, 0, uri, 0, 0 , SW_SHOW) > 32 ? 0 : 1;
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#else
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// check if X server is running
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if (system("xset -q > /dev/null 2>&1"))
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return 1;
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char command[256];
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sprintf(command, "xdg-open %s > /dev/null 2>&1", uri);
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return system(command);
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#endif
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}
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// https://github.com/darkk/redsocks/blob/master/base64.c
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char *
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base64_encode(const unsigned char *buffer, size_t length) {
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static const char b64[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
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char *ret, *dst;
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unsigned i_bits = 0;
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int i_shift = 0;
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int bytes_remaining = (int) length;
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ret = dst = xmalloc((size_t) (((length + 2) / 3 * 4) + 1));
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while (bytes_remaining) {
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i_bits = (i_bits << 8) + *buffer++;
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bytes_remaining--;
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i_shift += 8;
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do {
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*dst++ = b64[(i_bits << 6 >> i_shift) & 0x3f];
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i_shift -= 6;
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} while (i_shift > 6 || (bytes_remaining == 0 && i_shift > 0));
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}
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while ((dst - ret) & 3)
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*dst++ = '=';
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*dst = '\0';
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return ret;
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} |