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Revert half-working reconnecting stuff

master
Curtis McEnroe 2018-12-04 14:58:14 -05:00
parent 9106bd61fa
commit e01b03c963
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GPG Key ID: CEA2F97ADCFCD77C
7 changed files with 75 additions and 128 deletions
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1
chat.c
View File

@ -76,6 +76,5 @@ int main(int argc, char *argv[]) {
inputTab();
uiInit();
ircInit();
eventLoop();
}

6
chat.h
View File

@ -48,7 +48,6 @@ struct {
void eventWait(const char *argv[static 2]);
void eventPipe(const char *argv[static 2]);
void eventQuit(void);
noreturn void eventLoop(void);
struct Tag {
@ -106,16 +105,15 @@ void handle(char *line);
void input(struct Tag tag, char *line);
void inputTab(void);
void ircInit(void);
int ircConnect(void);
bool ircRead(void);
void ircRead(void);
void ircWrite(const char *ptr, size_t len);
void ircFmt(const char *format, ...) __attribute__((format(printf, 1, 2)));
void uiInit(void);
void uiShow(void);
void uiHide(void);
noreturn void uiExit(void);
void uiExit(void);
void uiDraw(void);
void uiRead(void);
void uiPrompt(void);

79
event.c
View File

@ -31,20 +31,12 @@
#include "chat.h"
static struct {
bool quit;
bool wait;
bool susp;
int irc;
int pipe;
} event = {
.irc = -1,
} child = {
.pipe = -1,
};
void eventQuit(void) {
event.quit = true;
}
void eventWait(const char *argv[static 2]) {
uiHide();
pid_t pid = fork();
@ -53,7 +45,7 @@ void eventWait(const char *argv[static 2]) {
execvp(argv[0], (char *const *)argv);
err(EX_CONFIG, "%s", argv[0]);
}
event.wait = true;
child.wait = true;
}
static void childWait(void) {
@ -69,11 +61,11 @@ static void childWait(void) {
"event: signal %s", strsignal(WTERMSIG(status))
);
}
event.wait = false;
child.wait = false;
}
void eventPipe(const char *argv[static 2]) {
if (event.pipe > 0) {
if (child.pipe > 0) {
uiLog(TagStatus, UIHot, L"event: existing pipe");
return;
}
@ -96,20 +88,20 @@ void eventPipe(const char *argv[static 2]) {
}
close(rw[1]);
event.pipe = rw[0];
child.pipe = rw[0];
}
static void pipeRead(void) {
static void childRead(void) {
char buf[256];
ssize_t len = read(event.pipe, buf, sizeof(buf) - 1);
ssize_t len = read(child.pipe, buf, sizeof(buf) - 1);
if (len < 0) err(EX_IOERR, "read");
if (len) {
buf[len] = '\0';
buf[strcspn(buf, "\n")] = '\0';
uiFmt(TagStatus, UIHot, "event: %s", buf);
} else {
close(event.pipe);
event.pipe = -1;
close(child.pipe);
child.pipe = -1;
}
}
@ -128,66 +120,45 @@ noreturn void eventLoop(void) {
};
sigaction(SIGCHLD, &action, NULL);
sigaction(SIGINT, &action, NULL);
sigaction(SIGTSTP, &action, NULL);
struct sigaction curses;
sigaction(SIGWINCH, &action, &curses);
assert(!(curses.sa_flags & SA_SIGINFO));
event.irc = ircConnect();
uiFmt(TagStatus, UICold, "Traveling to %s...", self.host);
int irc = ircConnect();
for (;;) {
if (sig[SIGCHLD]) childWait();
if (sig[SIGINT]) {
signal(SIGINT, SIG_DFL);
ircFmt("QUIT :Goodbye\r\n");
event.quit = true;
}
if (sig[SIGTSTP]) {
signal(SIGTSTP, SIG_DFL);
ircFmt("QUIT :zzz\r\n");
event.susp = true;
}
if (sig[SIGWINCH]) {
curses.sa_handler(SIGWINCH);
uiRead();
uiDraw();
}
sig[SIGCHLD] = sig[SIGINT] = sig[SIGTSTP] = sig[SIGWINCH] = 0;
sig[SIGCHLD] = sig[SIGINT] = sig[SIGWINCH] = 0;
nfds_t nfds = 0;
struct pollfd fds[3] = {
{ .events = POLLIN },
{ .events = POLLIN },
{ .events = POLLIN },
{ .events = POLLIN, .fd = irc },
{ .events = POLLIN, .fd = STDIN_FILENO },
{ .events = POLLIN, .fd = child.pipe },
};
if (!event.wait) fds[nfds++].fd = STDIN_FILENO;
if (event.irc > 0) fds[nfds++].fd = event.irc;
if (event.pipe > 0) fds[nfds++].fd = event.pipe;
if (child.wait) fds[1].events = 0;
if (child.pipe < 0) fds[2].events = 0;
int ready = poll(fds, nfds, -1);
if (ready < 0) {
int nfds = poll(fds, 3, -1);
if (nfds < 0) {
if (errno == EINTR) continue;
err(EX_IOERR, "poll");
}
for (nfds_t i = 0; i < nfds; ++i) {
if (!fds[i].revents) continue;
if (fds[i].fd == STDIN_FILENO) uiRead();
if (fds[i].fd == event.pipe) pipeRead();
if (fds[i].fd == event.irc) {
if (ircRead()) continue;
event.irc = -1;
// TODO: Handle unintended disconnects.
if (event.quit) uiExit();
if (event.susp) {
uiHide();
raise(SIGTSTP);
sigaction(SIGTSTP, &action, NULL);
uiShow();
event.irc = ircConnect();
event.susp = false;
}
}
}
if (fds[0].revents) ircRead();
if (fds[1].revents) uiRead();
if (fds[2].revents) childRead();
uiDraw();
}
}

9
handle.c
View File

@ -94,6 +94,14 @@ static void handlePing(char *prefix, char *params) {
ircFmt("PONG %s\r\n", params);
}
static void handleError(char *prefix, char *params) {
(void)prefix;
(void)params;
// TODO: Show error if unintended disconnect.
uiExit();
exit(EX_OK);
}
static void handleErrorErroneousNickname(char *prefix, char *params) {
char *mesg;
parse(prefix, NULL, NULL, NULL, params, 3, 0, NULL, NULL, &mesg);
@ -470,6 +478,7 @@ static const struct {
{ "401", handleErrorNoSuchNick },
{ "432", handleErrorErroneousNickname },
{ "433", handleErrorErroneousNickname },
{ "ERROR", handleError },
{ "JOIN", handleJoin },
{ "KICK", handleKick },
{ "NICK", handleNick },

7
input.c
View File

@ -105,12 +105,7 @@ static void inputTopic(struct Tag tag, char *params) {
static void inputQuit(struct Tag tag, char *params) {
(void)tag;
if (params) {
ircFmt("QUIT :%s\r\n", params);
} else {
ircFmt("QUIT :Goodbye\r\n");
}
eventQuit();
ircFmt("QUIT :%s\r\n", params ? params : "Goodbye");
}
static void inputURL(struct Tag tag, char *params) {

95
irc.c
View File

@ -19,7 +19,6 @@
#include <netdb.h>
#include <netinet/in.h>
#include <stdarg.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
@ -30,31 +29,21 @@
#include "chat.h"
static struct {
struct tls_config *config;
struct tls *client;
int sock;
} irc = {
.sock = -1,
};
void ircInit(void) {
irc.config = tls_config_new();
int error = tls_config_set_ciphers(irc.config, "compat");
if (error) errx(EX_SOFTWARE, "tls_config");
irc.client = tls_client();
if (!irc.client) errx(EX_SOFTWARE, "tls_client");
}
static struct tls *client;
int ircConnect(void) {
int error;
tls_reset(irc.client);
error = tls_configure(irc.client, irc.config);
if (error) errx(EX_SOFTWARE, "tls_configure: %s", tls_error(irc.client));
struct tls_config *config = tls_config_new();
error = tls_config_set_ciphers(config, "compat");
if (error) errx(EX_SOFTWARE, "tls_config");
uiFmt(TagStatus, UICold, "Traveling to %s", self.host);
client = tls_client();
if (!client) errx(EX_SOFTWARE, "tls_client");
error = tls_configure(client, config);
if (error) errx(EX_SOFTWARE, "tls_configure: %s", tls_error(client));
tls_config_free(config);
struct addrinfo *head;
struct addrinfo hints = {
@ -65,24 +54,25 @@ int ircConnect(void) {
error = getaddrinfo(self.host, self.port, &hints, &head);
if (error) errx(EX_NOHOST, "getaddrinfo: %s", gai_strerror(error));
int sock = -1;
for (struct addrinfo *ai = head; ai; ai = ai->ai_next) {
irc.sock = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
if (irc.sock < 0) err(EX_OSERR, "socket");
sock = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
if (sock < 0) err(EX_OSERR, "socket");
error = connect(irc.sock, ai->ai_addr, ai->ai_addrlen);
error = connect(sock, ai->ai_addr, ai->ai_addrlen);
if (!error) break;
close(irc.sock);
irc.sock = -1;
close(sock);
sock = -1;
}
if (irc.sock < 0) err(EX_UNAVAILABLE, "connect");
if (sock < 0) err(EX_UNAVAILABLE, "connect");
freeaddrinfo(head);
error = fcntl(irc.sock, F_SETFD, FD_CLOEXEC);
error = fcntl(sock, F_SETFD, FD_CLOEXEC);
if (error) err(EX_IOERR, "fcntl");
error = tls_connect_socket(irc.client, irc.sock, self.host);
if (error) errx(EX_PROTOCOL, "tls_connect: %s", tls_error(irc.client));
error = tls_connect_socket(client, sock, self.host);
if (error) errx(EX_PROTOCOL, "tls_connect: %s", tls_error(client));
const char *ssh = getenv("SSH_CLIENT");
if (self.webp && ssh) {
@ -95,18 +85,19 @@ int ircConnect(void) {
);
}
if (self.auth) ircFmt("CAP REQ :sasl\r\n");
if (self.pass) ircFmt("PASS :%s\r\n", self.pass);
ircFmt("NICK %s\r\n", self.nick);
ircFmt("USER %s 0 * :%s\r\n", self.user, self.real);
return irc.sock;
return sock;
}
void ircWrite(const char *ptr, size_t len) {
while (len) {
ssize_t ret = tls_write(irc.client, ptr, len);
ssize_t ret = tls_write(client, ptr, len);
if (ret == TLS_WANT_POLLIN || ret == TLS_WANT_POLLOUT) continue;
if (ret < 0) errx(EX_IOERR, "tls_write: %s", tls_error(irc.client));
if (ret < 0) errx(EX_IOERR, "tls_write: %s", tls_error(client));
ptr += ret;
len -= ret;
}
@ -120,43 +111,30 @@ void ircFmt(const char *format, ...) {
va_end(ap);
if (!buf) err(EX_OSERR, "vasprintf");
if (self.verbose) {
uiFmt(
TagVerbose, UICold,
"\3%d<<<\3 %.*s", IRCWhite, len - 2, buf
);
uiFmt(TagVerbose, UICold, "\3%d<<<\3 %.*s", IRCWhite, len - 2, buf);
}
ircWrite(buf, len);
free(buf);
}
static void disconnect(void) {
int error = tls_close(irc.client);
if (error) errx(EX_IOERR, "tls_close: %s", tls_error(irc.client));
error = close(irc.sock);
if (error) err(EX_IOERR, "close");
}
bool ircRead(void) {
void ircRead(void) {
static char buf[4096];
static size_t len;
ssize_t read = tls_read(irc.client, &buf[len], sizeof(buf) - len);
if (read < 0) errx(EX_IOERR, "tls_read: %s", tls_error(irc.client));
if (!read) {
disconnect();
len = 0;
return false;
}
ssize_t read;
retry:
read = tls_read(client, &buf[len], sizeof(buf) - len);
if (read == TLS_WANT_POLLIN || read == TLS_WANT_POLLOUT) goto retry;
if (read < 0) errx(EX_IOERR, "tls_read: %s", tls_error(client));
if (!read) errx(EX_PROTOCOL, "unexpected eof");
len += read;
char *crlf, *line = buf;
while ((crlf = strnstr(line, "\r\n", &buf[len] - line))) {
char *crlf;
char *line = buf;
while (NULL != (crlf = strnstr(line, "\r\n", &buf[len] - line))) {
crlf[0] = '\0';
if (self.verbose) {
uiFmt(
TagVerbose, UICold,
"\3%d>>>\3 %s", IRCGray, line
);
uiFmt(TagVerbose, UICold, "\3%d>>>\3 %s", IRCGray, line);
}
handle(line);
line = &crlf[2];
@ -164,5 +142,4 @@ bool ircRead(void) {
len -= line - buf;
memmove(buf, line, len);
return true;
}

4
ui.c
View File

@ -22,7 +22,6 @@
#include <stdarg.h>
#include <stdbool.h>
#include <stdlib.h>
#include <stdnoreturn.h>
#include <string.h>
#include <sysexits.h>
#include <wchar.h>
@ -112,13 +111,12 @@ void uiInit(void) {
uiShow();
}
noreturn void uiExit(void) {
void uiExit(void) {
uiHide();
printf(
"This program is AGPLv3 Free Software!\n"
"The source is available at <" SOURCE_URL ">.\n"
);
exit(EX_OK);
}
static int lastLine(void) {