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feat: add --port, --version long options and improved --help output

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- Add --port as alias for -p
- Add -V/--version flag
- Improve --help with environment variable documentation
- Update manpage with long option forms
This commit is contained in:
m1ngsama 2026-04-19 18:37:38 +08:00
parent edf5f542a6
commit 9060259558
2 changed files with 27 additions and 12 deletions
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23
src/main.c
View file

@ -31,7 +31,8 @@ int main(int argc, char **argv) {
/* Parse command line arguments */
for (int i = 1; i < argc; i++) {
if (strcmp(argv[i], "-p") == 0 && i + 1 < argc) {
if ((strcmp(argv[i], "-p") == 0 || strcmp(argv[i], "--port") == 0) &&
i + 1 < argc) {
char *end;
long val = strtol(argv[i + 1], &end, 10);
if (*end != '\0' || val <= 0 || val > 65535) {
@ -47,13 +48,23 @@ int main(int argc, char **argv) {
return 1;
}
i++;
} else if (strcmp(argv[i], "-V") == 0 || strcmp(argv[i], "--version") == 0) {
printf("tnt %s\n", TNT_VERSION);
return 0;
} else if (strcmp(argv[i], "-h") == 0 || strcmp(argv[i], "--help") == 0) {
printf("TNT - Terminal Network Talk\n");
printf("Usage: %s [options]\n", argv[0]);
printf("tnt %s - anonymous SSH chat server\n\n", TNT_VERSION);
printf("Usage: %s [options]\n\n", argv[0]);
printf("Options:\n");
printf(" -p PORT Listen on PORT (default: %d)\n", DEFAULT_PORT);
printf(" -d DIR Store host key and logs in DIR\n");
printf(" -h Show this help\n");
printf(" -p, --port PORT Listen on PORT (default: %d)\n", DEFAULT_PORT);
printf(" -d, --state-dir DIR Store host key and logs in DIR\n");
printf(" -V, --version Show version\n");
printf(" -h, --help Show this help\n");
printf("\nEnvironment:\n");
printf(" PORT Default listening port\n");
printf(" TNT_STATE_DIR State directory\n");
printf(" TNT_ACCESS_TOKEN Require this password for SSH auth\n");
printf(" TNT_MAX_CONNECTIONS Global connection limit (default: 64)\n");
printf(" TNT_RATE_LIMIT Set to 0 to disable rate limiting\n");
return 0;
} else {
fprintf(stderr, "Unknown option: %s\n", argv[i]);

16
tnt.1
View file

@ -4,11 +4,12 @@
tnt \- anonymous SSH chat server with Vim\-style TUI
.SH SYNOPSIS
.B tnt
.RB [ \-p
.RB [ \-p | \-\-port
.IR port ]
.RB [ \-d
.RB [ \-d | \-\-state\-dir
.IR dir ]
.RB [ \-h ]
.RB [ \-V | \-\-version ]
.RB [ \-h | \-\-help ]
.SH DESCRIPTION
.B tnt
is a multi\-user anonymous chat server accessed over SSH.
@ -21,7 +22,7 @@ The server supports CJK and emoji input, rate limiting, access tokens, and
a non\-interactive exec interface for scripting.
.SH OPTIONS
.TP
.BI \-p " port"
.BR \-p ", " \-\-port " " \fIport\fR
Listen on
.I port
instead of the default 2222.
@ -29,7 +30,7 @@ Overrides the
.B PORT
environment variable.
.TP
.BI \-d " dir"
.BR \-d ", " \-\-state\-dir " " \fIdir\fR
Store the host key and message log in
.IR dir .
Overrides the
@ -37,7 +38,10 @@ Overrides the
environment variable.
Defaults to the current working directory.
.TP
.B \-h
.BR \-V ", " \-\-version
Print version and exit.
.TP
.BR \-h ", " \-\-help
Print a short usage summary and exit.
.SH CONNECTING
.PP