[wiki] [sites] Port of the ssl patch for ii version 2.0. || Jon Eskin

From: <git_AT_suckless.org>
Date: Wed, 04 Jan 2023 13:08:43 +0100

commit 2fc2b65b9e65afe4c9937c60b440fb6660bd9a08
Author: Jon Eskin <eskinjp_AT_gmail.com>
Date: Wed Jan 4 07:06:06 2023 -0500

    Port of the ssl patch for ii version 2.0.

diff --git a/tools.suckless.org/ii/patches/ssl/ii-2.0-ssl.diff b/tools.suckless.org/ii/patches/ssl/ii-2.0-ssl.diff
new file mode 100644
index 00000000..79b88c92
--- /dev/null
+++ b/tools.suckless.org/ii/patches/ssl/ii-2.0-ssl.diff
_AT_@ -0,0 +1,400 @@
+From 20b47a9dbf4c8299f01d0d73f112ece58da8cabb Mon Sep 17 00:00:00 2001
+From: Jon Eskin <eskinjp_AT_gmail.com>
+Date: Wed, 4 Jan 2023 06:20:19 -0500
+Subject: [PATCH] porting ssl patch to 2.0
+
+---
+ Makefile | 2 +-
+ ii.1 | 5 ++
+ ii.c | 156 ++++++++++++++++++++++++++++++++++++++++++-------------
+ 3 files changed, 125 insertions(+), 38 deletions(-)
+
+diff --git a/Makefile b/Makefile
+index 28c7781..23db7c1 100644
+--- a/Makefile
++++ b/Makefile
+_AT_@ -12,7 +12,7 @@ OBJ = $(SRC:.c=.o)
+
+ # use system flags.
+ II_CFLAGS = $(CFLAGS)
+-II_LDFLAGS = $(LDFLAGS)
++II_LDFLAGS = $(LDFLAGS) -lssl -lcrypto
+
+ # on systems which provide strlcpy(3),
+ # remove NEED_STRLCPY from CPPFLAGS and
+diff --git a/ii.1 b/ii.1
+index 59fd798..3ddc376 100644
+--- a/ii.1
++++ b/ii.1
+_AT_@ -7,6 +7,8 @@ ii - irc it or irc improved
+ .I host
+ .RB [ -p
+ .I port
++.RB [ \-e
++.IR ssl ]
+ |
+ .B -u
+ .IR sockname ]
+_AT_@ -40,6 +42,9 @@ server/host to connect to, for example: 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 -u " sockname"
+ connect to a UNIX domain socket instead of directly to a server.
+ If set, the
+diff --git a/ii.c b/ii.c
+index c402a87..6de4157 100644
+--- a/ii.c
++++ b/ii.c
+_AT_@ -20,6 +20,10 @@
+ #include <time.h>
+ #include <unistd.h>
+
++#include <openssl/rand.h>
++#include <openssl/ssl.h>
++#include <openssl/err.h>
++
+ char *argv0;
+
+ #include "arg.h"
+_AT_@ -43,6 +47,14 @@ struct Channel {
+ Channel *next;
+ };
+
++typedef struct {
++ int use_ssl;
++ int irc;
++ SSL *sslHandle;
++ SSL_CTX *sslContext;
++} conn;
++
++
+ static Channel * channel_add(const char *);
+ static Channel * channel_find(const char *);
+ static Channel * channel_join(const char *);
+_AT_@ -57,21 +69,24 @@ static void channel_rm(Channel *);
+ static void cleanup(void);
+ static void create_dirtree(const char *);
+ static void create_filepath(char *, size_t, const char *, const char *, const char *);
++static int swrite(conn *, const char *, size_t);
++static void ewritestr(conn *, const char *);
++static void handle_channels_input(conn *, Channel *);
++static void handle_server_output(conn *);
+ static void die(const char *, ...);
+-static void ewritestr(int, const char *);
+-static void handle_channels_input(int, Channel *);
+-static void handle_server_output(int);
+ static int isnumeric(const char *);
+-static void loginkey(int, const char *);
+-static void loginuser(int, const char *, const char *);
+-static void proc_channels_input(int, Channel *, char *);
+-static void proc_channels_privmsg(int, Channel *, char *);
+-static void proc_server_cmd(int, char *);
+-static int read_line(int, char *, size_t);
+-static void run(int, const char *);
++static void loginkey(conn *, const char *);
++static void loginuser(conn *, const char *, const char *);
++static void proc_channels_input(conn *, Channel *, char *);
++static void proc_channels_privmsg(conn *, Channel *, char *);
++static void proc_server_cmd(conn *, char *);
++static int sread(conn *, char *, size_t);
++static int read_line(conn *, char *, size_t);
++static int read_line_from_channel(int, char *, size_t);
++static void run(conn *, const char *);
+ static void setup(void);
+ static void sighandler(int);
+-static int tcpopen(const char *, const char *);
++static void tcpopen(conn *ircfd, const char *, const char *);
+ static size_t tokenize(char **, size_t, char *, int);
+ static int udsopen(const char *);
+ static void usage(void);
+_AT_@ -102,18 +117,27 @@ static void
+ usage(void)
+ {
+ die("usage: %s -s host [-p port | -u sockname] [-i ircdir]
"
+- " [-n nickname] [-f fullname] [-k env_pass]
", argv0);
++ " [-e <ssl>] [-n nickname] [-f fullname] [-k env_pass]
", argv0);
++}
++
++static int
++swrite(conn *ircfd, const char *msg, size_t len)
++{
++ if (ircfd->use_ssl)
++ return SSL_write(ircfd->sslHandle, msg, len);
++
++ return write(ircfd->irc, msg, len);
+ }
+
+ static void
+-ewritestr(int fd, const char *s)
++ewritestr(conn *fd, const char *s)
+ {
+ size_t len, off = 0;
+ int w = -1;
+
+ len = strlen(s);
+ for (off = 0; off < len; off += w) {
+- if ((w = write(fd, s + off, len - off)) == -1)
++ if ((w = swrite(fd, s + off, len - off)) == -1)
+ break;
+ }
+ if (w == -1)
+_AT_@ -185,6 +209,7 @@ cleanup(void)
+ tmp = c->next;
+ channel_leave(c);
+ }
++
+ }
+
+ static void
+_AT_@ -341,14 +366,14 @@ channel_leave(Channel *c)
+ }
+
+ static void
+-loginkey(int ircfd, const char *key)
++loginkey(conn *ircfd, const char *key)
+ {
+ snprintf(msg, sizeof(msg), "PASS %s
", key);
+ ewritestr(ircfd, msg);
+ }
+
+ static void
+-loginuser(int ircfd, const char *host, const char *fullname)
++loginuser(conn *ircfd, const char *host, const char *fullname)
+ {
+ snprintf(msg, sizeof(msg), "NICK %s
USER %s localhost %s :%s
",
+ nick, nick, host, fullname);
+_AT_@ -377,12 +402,15 @@ udsopen(const char *uds)
+ return fd;
+ }
+
+-static int
+-tcpopen(const char *host, const char *service)
++static void
++tcpopen(conn *ircfd, const char *host, const char *service)
+ {
+ struct addrinfo hints, *res = NULL, *rp;
+ int fd = -1, e;
+
++ ircfd->sslHandle = NULL;
++ ircfd->sslContext = NULL;
++
+ memset(&hints, 0, sizeof(hints));
+ hints.ai_family = AF_UNSPEC; /* allow IPv4 or IPv6 */
+ hints.ai_flags = AI_NUMERICSERV; /* avoid name lookup for port */
+_AT_@ -407,7 +435,19 @@ tcpopen(const char *host, const char *service)
+ argv0, host, service, strerror(errno));
+
+ freeaddrinfo(res);
+- return fd;
++ ircfd->irc = fd;
++ if (!ircfd->use_ssl)
++ return;
++
++ //SSL_load_error_strings();
++ //SSL_library_init();
++ ircfd->sslContext = SSL_CTX_new(SSLv23_client_method());
++ if (ircfd->sslContext == NULL)
++ ERR_print_errors_fp(stderr);
++ ircfd->sslHandle = SSL_new(ircfd->sslContext);
++ if (!SSL_set_fd(ircfd->sslHandle, ircfd->irc) ||
++ (SSL_connect(ircfd->sslHandle) != 1))
++ ERR_print_errors_fp(stderr);
+ }
+
+ static int
+_AT_@ -459,7 +499,7 @@ channel_print(Channel *c, const char *buf)
+ }
+
+ static void
+-proc_channels_privmsg(int ircfd, Channel *c, char *buf)
++proc_channels_privmsg(conn *ircfd, Channel *c, char *buf)
+ {
+ snprintf(msg, sizeof(msg), "<%s> %s", nick, buf);
+ channel_print(c, msg);
+_AT_@ -468,7 +508,7 @@ proc_channels_privmsg(int ircfd, Channel *c, char *buf)
+ }
+
+ static void
+-proc_channels_input(int ircfd, Channel *c, char *buf)
++proc_channels_input(conn *ircfd, Channel *c, char *buf)
+ {
+ char *p = NULL;
+ size_t buflen;
+_AT_@ -560,7 +600,7 @@ proc_channels_input(int ircfd, Channel *c, char *buf)
+ }
+
+ static void
+-proc_server_cmd(int fd, char *buf)
++proc_server_cmd(conn *fd, char *buf)
+ {
+ Channel *c;
+ const char *channel;
+_AT_@ -679,8 +719,33 @@ proc_server_cmd(int fd, char *buf)
+ channel_print(c, msg);
+ }
+
++
++static int
++sread(conn *fd, char *buf, size_t bufsize)
++{
++ if (fd->use_ssl)
++ return SSL_read(fd->sslHandle, buf, bufsize);
++
++ return read(fd->irc, buf, bufsize);
++}
++
+ static int
+-read_line(int fd, char *buf, size_t bufsiz)
++read_line(conn *fd, char *buf, size_t bufsiz)
++{
++ size_t i = 0;
++ char c = '++
++ do {
++ if (sread(fd, &c, sizeof(char)) != sizeof(char))
++ return -1;
++ buf[i++] = c;
++ } while (c != '
' && i < bufsiz);
++ buf[i - 1] = '' */
++ return 0;
++}
++
++static int
++read_line_from_channel(int fd, char *buf, size_t bufsiz)
+ {
+ size_t i = 0;
+ char c = '+_AT_@ -695,7 +760,7 @@ read_line(int fd, char *buf, size_t bufsiz)
+ }
+
+ static void
+-handle_channels_input(int ircfd, Channel *c)
++handle_channels_input(conn *ircfd, Channel *c)
+ {
+ /*
+ * Do not allow to read this fully, since commands will be
+_AT_@ -706,7 +771,7 @@ handle_channels_input(int ircfd, Channel *c)
+ */
+ char buf[IRC_MSG_MAX-64];
+
+- if (read_line(c->fdin, buf, sizeof(buf)) == -1) {
++ if (read_line_from_channel(c->fdin, buf, sizeof(buf)) == -1) {
+ if (channel_reopen(c) == -1)
+ channel_rm(c);
+ return;
+_AT_@ -715,7 +780,7 @@ handle_channels_input(int ircfd, Channel *c)
+ }
+
+ static void
+-handle_server_output(int ircfd)
++handle_server_output(conn *ircfd)
+ {
+ char buf[IRC_MSG_MAX];
+
+_AT_@ -746,7 +811,7 @@ setup(void)
+ }
+
+ static void
+-run(int ircfd, const char *host)
++run(conn *ircfd, const char *host)
+ {
+ Channel *c, *tmp;
+ fd_set rdset;
+_AT_@ -756,9 +821,9 @@ run(int ircfd, const char *host)
+
+ snprintf(ping_msg, sizeof(ping_msg), "PING %s
", host);
+ while (isrunning) {
+- maxfd = ircfd;
++ maxfd = ircfd->irc;
+ FD_ZERO(&rdset);
+- FD_SET(ircfd, &rdset);
++ FD_SET(ircfd->irc, &rdset);
+ for (c = channels; c; c = c->next) {
+ if (c->fdin > maxfd)
+ maxfd = c->fdin;
+_AT_@ -780,7 +845,7 @@ run(int ircfd, const char *host)
+ ewritestr(ircfd, ping_msg);
+ continue;
+ }
+- if (FD_ISSET(ircfd, &rdset)) {
++ if (FD_ISSET(ircfd->irc, &rdset)) {
+ handle_server_output(ircfd);
+ last_response = time(NULL);
+ }
+_AT_@ -797,9 +862,12 @@ main(int argc, char *argv[])
+ {
+ struct passwd *spw;
+ const char *key = NULL, *fullname = NULL, *host = "";
+- const char *uds = NULL, *service = "6667";
++ const char *uds = NULL;
++ const char *service = "6667";
++ const char *sservice = "6697";
+ char prefix[PATH_MAX];
+- int ircfd, r;
++ int r, defaultPort = 1;
++ conn ircfd;
+
+ /* use nickname and home dir of user by default */
+ if (!(spw = getpwuid(getuid())))
+_AT_@ -823,6 +891,7 @@ main(int argc, char *argv[])
+ break;
+ case 'p':
+ service = EARGF(usage());
++ defaultPort = 0;
+ break;
+ case 's':
+ host = EARGF(usage());
+_AT_@ -830,6 +899,11 @@ main(int argc, char *argv[])
+ case 'u':
+ uds = EARGF(usage());
+ break;
++ case 'e':
++ if (defaultPort)
++ service = sservice;
++ ircfd.use_ssl = 1;
++ break;
+ default:
+ usage();
+ break;
+_AT_@ -839,9 +913,9 @@ main(int argc, char *argv[])
+ usage();
+
+ if (uds)
+- ircfd = udsopen(uds);
++ ircfd.irc = udsopen(uds);
+ else
+- ircfd = tcpopen(host, service);
++ tcpopen(&ircfd, host, service);
+
+ #ifdef __OpenBSD__
+ /* OpenBSD pledge(2) support */
+_AT_@ -856,11 +930,19 @@ main(int argc, char *argv[])
+
+ channelmaster = channel_add(""); /* master channel */
+ if (key)
+- loginkey(ircfd, key);
+- loginuser(ircfd, host, fullname && *fullname ? fullname : nick);
++ loginkey(&ircfd, key);
++ loginuser(&ircfd, host, fullname && *fullname ? fullname : nick);
+ setup();
+- run(ircfd, host);
++ run(&ircfd, host);
+ cleanup();
+
++ if (ircfd.use_ssl) {
++ SSL_shutdown(ircfd.sslHandle);
++ SSL_free(ircfd.sslHandle);
++ SSL_CTX_free(ircfd.sslContext);
++ }
++
++ close(ircfd.irc);
++
+ return 0;
+ }
+--
+2.39.0
+
diff --git a/tools.suckless.org/ii/patches/ssl/index.md b/tools.suckless.org/ii/patches/ssl/index.md
index bc44bce3..21574f26 100644
--- a/tools.suckless.org/ii/patches/ssl/index.md
+++ b/tools.suckless.org/ii/patches/ssl/index.md
_AT_@ -10,9 +10,11 @@ Download
 --------
 * [ii-1.7-ssl.diff](ii-1.7-ssl.diff)
 * [ii-ssl-20200811-ecf3902.diff](ii-ssl-20200811-ecf3902.diff)
+* [ii-2.0-ssl.diff](ii-2.0-ssl.diff)
 
 Author
 ------
 * Written for 1.6 by Hunter Haugen
 * Ported to ii 1.7 by Nik Unger
 * Ported to ii 1.8 by Alexandre Hannedouche
+* Ported to ii 2.0 by Jon Eskin
Received on Wed Jan 04 2023 - 13:08:43 CET