mirror of
https://github.com/rkd77/elinks.git
synced 2024-08-25 21:44:47 -04:00
299 lines
7.7 KiB
C
299 lines
7.7 KiB
C
/* Internal "mailto", "telnet", "tn3270" and misc. protocol implementation */
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include <ctype.h>
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
#ifdef HAVE_UNISTD_H
|
|
#include <unistd.h>
|
|
#endif
|
|
|
|
#include "elinks.h"
|
|
|
|
#include "bfu/dialog.h"
|
|
#include "config/options.h"
|
|
#include "intl/gettext/libintl.h"
|
|
#include "main/module.h"
|
|
#include "osdep/osdep.h"
|
|
#include "protocol/uri.h"
|
|
#include "protocol/user.h"
|
|
#include "session/download.h"
|
|
#include "session/session.h"
|
|
#include "terminal/terminal.h"
|
|
#include "terminal/window.h"
|
|
#include "util/conv.h"
|
|
#include "util/file.h"
|
|
#include "util/memory.h"
|
|
#include "util/string.h"
|
|
|
|
|
|
static struct option_info user_protocol_options[] = {
|
|
INIT_OPT_TREE("protocol", N_("User protocols"),
|
|
"user", OPT_AUTOCREATE,
|
|
N_("User protocols. Options in this tree specify external\n"
|
|
"handlers for the appropriate protocols. Ie.\n"
|
|
"protocol.user.mailto.unix.")),
|
|
|
|
/* FIXME: Poorly designed options structure. Ought to be able to specify
|
|
* need_slashes, free_form and similar options as well :-(. --pasky */
|
|
|
|
/* Basically, it looks like protocol.user.mailto.win32 = "blah" */
|
|
|
|
INIT_OPT_TREE("protocol.user", NULL,
|
|
"_template_", OPT_AUTOCREATE,
|
|
N_("Handler (external program) for this protocol. Name the\n"
|
|
"options in this tree after your system (ie. unix, unix-xwin).")),
|
|
|
|
INIT_OPT_STRING("protocol.user._template_", NULL,
|
|
"_template_", 0, "",
|
|
N_("Handler (external program) for this protocol and system.\n"
|
|
"%f in the string means file name to include form data from\n"
|
|
"%h in the string means hostname (or email address)\n"
|
|
"%p in the string means port\n"
|
|
"%d in the string means path (everything after the port)\n"
|
|
"%s in the string means subject (?subject=<this>)\n"
|
|
"%u in the string means the whole URL")),
|
|
|
|
#define INIT_OPT_USER_PROTOCOL(scheme, system, cmd) \
|
|
INIT_OPT_STRING("protocol.user." scheme, NULL, system, 0, cmd, NULL)
|
|
|
|
#ifndef CONFIG_GOPHER
|
|
INIT_OPT_USER_PROTOCOL("gopher", "unix", DEFAULT_AC_OPT_GOPHER),
|
|
INIT_OPT_USER_PROTOCOL("gopher", "unix-xwin", DEFAULT_AC_OPT_GOPHER),
|
|
#endif
|
|
INIT_OPT_USER_PROTOCOL("irc", "unix", DEFAULT_AC_OPT_IRC),
|
|
INIT_OPT_USER_PROTOCOL("irc", "unix-xwin", DEFAULT_AC_OPT_IRC),
|
|
INIT_OPT_USER_PROTOCOL("mailto", "unix", DEFAULT_AC_OPT_MAILTO),
|
|
INIT_OPT_USER_PROTOCOL("mailto", "unix-xwin", DEFAULT_AC_OPT_MAILTO),
|
|
#ifndef CONFIG_NNTP
|
|
INIT_OPT_USER_PROTOCOL("news", "unix", DEFAULT_AC_OPT_NEWS),
|
|
INIT_OPT_USER_PROTOCOL("news", "unix-xwin", DEFAULT_AC_OPT_NEWS),
|
|
#endif
|
|
INIT_OPT_USER_PROTOCOL("telnet", "unix", DEFAULT_AC_OPT_TELNET),
|
|
INIT_OPT_USER_PROTOCOL("telnet", "unix-xwin", DEFAULT_AC_OPT_TELNET),
|
|
INIT_OPT_USER_PROTOCOL("tn3270", "unix", DEFAULT_AC_OPT_TN3270),
|
|
INIT_OPT_USER_PROTOCOL("tn3270", "unix-xwin", DEFAULT_AC_OPT_TN3270),
|
|
|
|
NULL_OPTION_INFO,
|
|
};
|
|
|
|
struct module user_protocol_module = struct_module(
|
|
/* name: */ N_("User protocols"),
|
|
/* options: */ user_protocol_options,
|
|
/* hooks: */ NULL,
|
|
/* submodules: */ NULL,
|
|
/* data: */ NULL,
|
|
/* init: */ NULL,
|
|
/* done: */ NULL
|
|
);
|
|
|
|
|
|
unsigned char *
|
|
get_user_program(struct terminal *term, unsigned char *progid, int progidlen)
|
|
{
|
|
struct option *opt;
|
|
int xwin = term ? term->environment & ENV_XWIN : 0;
|
|
struct string name;
|
|
|
|
if (!init_string(&name)) return NULL;
|
|
|
|
add_to_string(&name, "protocol.user.");
|
|
|
|
/* Now add lowercased progid part. Delicious. */
|
|
add_bytes_to_string(&name, progid, progidlen);
|
|
convert_to_lowercase(&name.source[sizeof("protocol.user.") - 1], progidlen);
|
|
|
|
add_char_to_string(&name, '.');
|
|
add_to_string(&name, get_system_str(xwin));
|
|
|
|
opt = get_opt_rec_real(config_options, name.source);
|
|
|
|
done_string(&name);
|
|
return (unsigned char *) (opt ? opt->value.string : NULL);
|
|
}
|
|
|
|
|
|
static unsigned char *
|
|
subst_cmd(unsigned char *cmd, struct uri *uri, unsigned char *subj,
|
|
unsigned char *formfile)
|
|
{
|
|
struct string string;
|
|
|
|
if (!init_string(&string)) return NULL;
|
|
|
|
while (*cmd) {
|
|
int p;
|
|
|
|
for (p = 0; cmd[p] && cmd[p] != '%'; p++);
|
|
|
|
add_bytes_to_string(&string, cmd, p);
|
|
cmd += p;
|
|
|
|
if (*cmd != '%') break;
|
|
|
|
cmd++;
|
|
/* TODO: Decode URI fragments before adding them. --jonas */
|
|
switch (*cmd) {
|
|
case 'u':
|
|
{
|
|
unsigned char *url = struri(uri);
|
|
int length = get_real_uri_length(uri);
|
|
|
|
add_shell_safe_to_string(&string, url, length);
|
|
break;
|
|
}
|
|
case 'h':
|
|
/* TODO For some user protocols it would be
|
|
* better if substitution of each uri
|
|
* field was completely configurable. Now
|
|
* @host contains both the uri username
|
|
* field, (password field) and hostname
|
|
* field because it is useful for mailto
|
|
* protocol handling. */
|
|
/* It would break a lot of configurations so I
|
|
* don't know. --jonas */
|
|
if (uri->userlen && uri->hostlen) {
|
|
int hostlen = uri->host + uri->hostlen - uri->user;
|
|
|
|
add_shell_safe_to_string(&string, uri->user,
|
|
hostlen);
|
|
} else if (uri->host) {
|
|
add_shell_safe_to_string(&string, uri->host,
|
|
uri->hostlen);
|
|
}
|
|
break;
|
|
case 'p':
|
|
if (uri->portlen)
|
|
add_shell_safe_to_string(&string, uri->port,
|
|
uri->portlen);
|
|
break;
|
|
case 'd':
|
|
if (uri->datalen)
|
|
add_shell_safe_to_string(&string, uri->data,
|
|
uri->datalen);
|
|
break;
|
|
case 's':
|
|
if (subj)
|
|
add_shell_safe_to_string(&string, subj,
|
|
strlen(subj));
|
|
break;
|
|
case 'f':
|
|
if (formfile)
|
|
add_to_string(&string, formfile);
|
|
break;
|
|
default:
|
|
add_bytes_to_string(&string, cmd - 1, 2);
|
|
break;
|
|
}
|
|
if (*cmd) cmd++;
|
|
}
|
|
|
|
return string.source;
|
|
}
|
|
|
|
/* Stay silent about complete RFC 2368 support or do it yourself! ;-).
|
|
* --pasky */
|
|
static unsigned char *
|
|
get_subject_from_query(unsigned char *query)
|
|
{
|
|
unsigned char *subject;
|
|
|
|
if (strncmp(query, "subject=", 8)) {
|
|
subject = strstr(query, "&subject=");
|
|
if (!subject) return NULL;
|
|
subject += 9;
|
|
} else {
|
|
subject = query + 8;
|
|
}
|
|
|
|
/* Return subject until next '&'-value or end of string */
|
|
return memacpy(subject, strcspn(subject, "&"));
|
|
}
|
|
|
|
static unsigned char *
|
|
save_form_data_to_file(struct uri *uri)
|
|
{
|
|
unsigned char *filename = get_tempdir_filename("elinks-XXXXXX");
|
|
int formfd;
|
|
FILE *formfile;
|
|
|
|
if (!filename) return NULL;
|
|
|
|
formfd = safe_mkstemp(filename);
|
|
if (formfd < 0) {
|
|
mem_free(filename);
|
|
return NULL;
|
|
}
|
|
|
|
formfile = fdopen(formfd, "w");
|
|
if (!formfile) {
|
|
mem_free(filename);
|
|
close(formfd);
|
|
return NULL;
|
|
}
|
|
|
|
if (uri->post) {
|
|
/* Jump the content type */
|
|
unsigned char *formdata = strchr(uri->post, '\n');
|
|
|
|
formdata = formdata ? formdata + 1 : uri->post;
|
|
fwrite(formdata, strlen(formdata), 1, formfile);
|
|
}
|
|
fclose(formfile);
|
|
|
|
return filename;
|
|
}
|
|
|
|
void
|
|
user_protocol_handler(struct session *ses, struct uri *uri)
|
|
{
|
|
unsigned char *subj = NULL, *prog;
|
|
unsigned char *formfilename;
|
|
|
|
prog = get_user_program(ses->tab->term, struri(uri), uri->protocollen);
|
|
if (!prog || !*prog) {
|
|
unsigned char *protocol = memacpy(struri(uri), uri->protocollen);
|
|
|
|
/* Shouldn't ever happen, but be paranoid. */
|
|
/* Happens when you're in X11 and you've no handler for it. */
|
|
info_box(ses->tab->term, MSGBOX_FREE_TEXT,
|
|
N_("No program"), ALIGN_CENTER,
|
|
msg_text(ses->tab->term,
|
|
N_("No program specified for protocol %s."),
|
|
empty_string_or_(protocol)));
|
|
|
|
mem_free_if(protocol);
|
|
return;
|
|
}
|
|
|
|
if (uri->data && uri->datalen) {
|
|
/* Some mailto specific stuff follows... */
|
|
unsigned char *query = get_uri_string(uri, URI_QUERY);
|
|
|
|
if (query) {
|
|
subj = get_subject_from_query(query);
|
|
mem_free(query);
|
|
if (subj) decode_uri(subj);
|
|
}
|
|
}
|
|
|
|
formfilename = save_form_data_to_file(uri);
|
|
|
|
prog = subst_cmd(prog, uri, subj, formfilename);
|
|
mem_free_if(subj);
|
|
if (prog) {
|
|
unsigned char *delete = empty_string_or_(formfilename);
|
|
|
|
exec_on_terminal(ses->tab->term, prog, delete, 1);
|
|
mem_free(prog);
|
|
|
|
} else if (formfilename) {
|
|
unlink(formfilename);
|
|
}
|
|
|
|
mem_free_if(formfilename);
|
|
}
|