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ssl: applying ssl patch to version 1.7

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TiynGER 2020-12-27 18:32:55 +01:00
parent 33583287cc
commit 301372c5dd
3 changed files with 54 additions and 18 deletions
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2
config.mk
View File

@ -16,7 +16,7 @@ VERSION = 1.7
# includes and libs
INCLUDES = -I. -I${INCDIR} -I/usr/include
LIBS = -L${LIBDIR} -L/usr/lib -lc
LIBS = -L${LIBDIR} -L/usr/lib -lc -lssl -lcrypto
# uncomment and comment other variables for compiling on Solaris
#LIBS = -L${LIBDIR} -L/usr/lib -lc -lsocket -lnsl
#CFLAGS = -g ${INCLUDES} -DVERSION=\"${VERSION}\"

5
ii.1
View File

@ -25,6 +25,8 @@ and ii creates a new channel directory with in and out file.
.IR servername ]
.RB [ \-p
.IR port ]
.RB [ \-e
.IR ssl ]
.RB [ \-k
.IR environment variable ]
.RB [ \-i
@ -42,6 +44,9 @@ lets you override the default servername (irc.freenode.net)
.BI \-p " port"
lets you override the default port (6667)
.TP
.BI \-e " ssl"
lets you connect using ssl encryption. The default ssl port is 6697.
.TP
.BI \-k " environment variable"
lets you specify an environment variable that contains your IRC password, e.g. IIPASS="foobar" ii -k IIPASS.
This is done in order to prevent other users from eavesdropping the server password via the process list.

65
ii.c
View File

@ -18,12 +18,23 @@
#include <ctype.h>
#include <time.h>
#include <unistd.h>
#include <openssl/rand.h>
#include <openssl/ssl.h>
#include <openssl/err.h>
#ifndef PIPE_BUF /* FreeBSD don't know PIPE_BUF */
#define PIPE_BUF 4096
#endif
#define PING_TIMEOUT 300
#define SERVER_PORT 6667
#define SSL_SERVER_PORT 6697
#define WRITE(con, mes, len) (use_ssl ? SSL_write(irc->sslHandle, mes, len) : write(con->irc, mes, len))
#define READ(fd, buf, size) (from_server && use_ssl ? SSL_read(irc->sslHandle, buf, size) : read(fd, buf, size))
typedef struct {
int irc;
SSL *sslHandle;
SSL_CTX *sslContext;
} conn;
enum { TOK_NICKSRV = 0, TOK_USER, TOK_CMD, TOK_CHAN, TOK_ARG, TOK_TEXT, TOK_LAST };
typedef struct Channel Channel;
@ -33,7 +44,8 @@ struct Channel {
Channel *next;
};
static int irc;
conn *irc;
static int use_ssl;
static time_t last_response;
static Channel *channels = NULL;
static char *host = "irc.freenode.net";
@ -45,7 +57,7 @@ static void usage() {
fputs("ii - irc it - " VERSION "\n"
"(C)opyright MMV-MMVI Anselm R. Garbe\n"
"(C)opyright MMV-MMXI Nico Golde\n"
"usage: ii [-i <irc dir>] [-s <host>] [-p <port>]\n"
"usage: ii [-i <irc dir>] [-s <host>] [-p <port>] [-e ssl]\n"
" [-n <nick>] [-k <password>] [-f <fullname>]\n", stderr);
exit(EXIT_FAILURE);
}
@ -148,11 +160,12 @@ static void login(char *key, char *fullname) {
nick, nick, host, fullname ? fullname : nick);
else snprintf(message, PIPE_BUF, "NICK %s\r\nUSER %s localhost %s :%s\r\n",
nick, nick, host, fullname ? fullname : nick);
write(irc, message, strlen(message)); /* login */
WRITE(irc, message, strlen(message)); /* login */
}
static int tcpopen(unsigned short port) {
conn *tcpopen(unsigned short port) {
int fd;
conn *c;
struct sockaddr_in sin;
struct hostent *hp = gethostbyname(host);
@ -172,7 +185,22 @@ static int tcpopen(unsigned short port) {
perror("ii: cannot connect to host");
exit(EXIT_FAILURE);
}
return fd;
c = malloc(sizeof(conn));
c->irc = fd;
if(use_ssl) {
c->sslHandle = NULL;
c->sslContext = NULL;
SSL_load_error_strings();
SSL_library_init();
c->sslContext = SSL_CTX_new(SSLv23_client_method());
if(c->sslContext == NULL)
ERR_print_errors_fp(stderr);
c->sslHandle = SSL_new(c->sslContext);
if(!SSL_set_fd(c->sslHandle, c->irc)
|| (SSL_connect(c->sslHandle) != 1))
ERR_print_errors_fp(stderr);
}
return c;
}
static size_t tokenize(char **result, size_t reslen, char *str, char delim) {
@ -219,7 +247,7 @@ static void proc_channels_privmsg(char *channel, char *buf) {
snprintf(message, PIPE_BUF, "<%s> %s", nick, buf);
print_out(channel, message);
snprintf(message, PIPE_BUF, "PRIVMSG %s :%s\r\n", channel, buf);
write(irc, message, strlen(message));
WRITE(irc, message, strlen(message));
}
static void proc_channels_input(Channel *c, char *buf) {
@ -273,7 +301,7 @@ static void proc_channels_input(Channel *c, char *buf) {
else
snprintf(message, PIPE_BUF,
"PART %s :ii - 500 SLOC are too much\r\n", c->name);
write(irc, message, strlen(message));
WRITE(irc, message, strlen(message));
close(c->fd);
/*create_filepath(infile, sizeof(infile), c->name, "in");
unlink(infile); */
@ -288,7 +316,7 @@ static void proc_channels_input(Channel *c, char *buf) {
snprintf(message, PIPE_BUF, "%s\r\n", &buf[1]);
if (message[0] != '\0')
write(irc, message, strlen(message));
WRITE(irc, message, strlen(message));
}
static void proc_server_cmd(char *buf) {
@ -339,7 +367,7 @@ static void proc_server_cmd(char *buf) {
return;
} else if(!strncmp("PING", argv[TOK_CMD], 5)) {
snprintf(message, PIPE_BUF, "PONG %s\r\n", argv[TOK_TEXT]);
write(irc, message, strlen(message));
WRITE(irc, message, strlen(message));
return;
} else if(!argv[TOK_NICKSRV] || !argv[TOK_USER]) { /* server command */
snprintf(message, PIPE_BUF, "%s%s", argv[TOK_ARG] ? argv[TOK_ARG] : "", argv[TOK_TEXT] ? argv[TOK_TEXT] : "");
@ -373,11 +401,11 @@ static void proc_server_cmd(char *buf) {
print_out(argv[TOK_CHAN], message);
}
static int read_line(int fd, size_t res_len, char *buf) {
static int read_line(int fd, size_t res_len, char *buf, int from_server) {
size_t i = 0;
char c = 0;
do {
if(read(fd, &c, sizeof(char)) != sizeof(char))
if(READ(fd, &c, sizeof(char)) != sizeof(char))
return -1;
buf[i++] = c;
}
@ -388,7 +416,7 @@ static int read_line(int fd, size_t res_len, char *buf) {
static void handle_channels_input(Channel *c) {
static char buf[PIPE_BUF];
if(read_line(c->fd, PIPE_BUF, buf) == -1) {
if(read_line(c->fd, PIPE_BUF, buf, 0) == -1) {
close(c->fd);
int fd = open_channel(c->name);
if(fd != -1)
@ -402,7 +430,7 @@ static void handle_channels_input(Channel *c) {
static void handle_server_output() {
static char buf[PIPE_BUF];
if(read_line(irc, PIPE_BUF, buf) == -1) {
if(read_line(irc->irc, PIPE_BUF, buf, 1) == -1) {
perror("ii: remote host closed connection");
exit(EXIT_FAILURE);
}
@ -419,8 +447,8 @@ static void run() {
snprintf(ping_msg, sizeof(ping_msg), "PING %s\r\n", host);
for(;;) {
FD_ZERO(&rd);
maxfd = irc;
FD_SET(irc, &rd);
maxfd = irc->irc;
FD_SET(irc->irc, &rd);
for(c = channels; c; c = c->next) {
if(maxfd < c->fd)
maxfd = c->fd;
@ -440,10 +468,10 @@ static void run() {
print_out(NULL, "-!- ii shutting down: ping timeout");
exit(EXIT_FAILURE);
}
write(irc, ping_msg, strlen(ping_msg));
WRITE(irc, ping_msg, strlen(ping_msg));
continue;
}
if(FD_ISSET(irc, &rd)) {
if(FD_ISSET(irc->irc, &rd)) {
handle_server_output();
last_response = time(NULL);
}
@ -475,10 +503,13 @@ int main(int argc, char *argv[]) {
case 'p': port = strtol(argv[++i], NULL, 10); break;
case 'n': snprintf(nick,sizeof(nick),"%s", argv[++i]); break;
case 'k': key = getenv(argv[++i]); break;
case 'e': use_ssl = 1; ++i; break;
case 'f': fullname = argv[++i]; break;
default: usage(); break;
}
}
if(use_ssl)
port = port == SERVER_PORT ? SSL_SERVER_PORT : port;
irc = tcpopen(port);
if(!snprintf(path, sizeof(path), "%s/%s", prefix, host)) {
fputs("ii: path to irc directory too long\n", stderr);