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Diffstat (limited to 'windows/wincons.c')
-rw-r--r--windows/wincons.c452
1 files changed, 0 insertions, 452 deletions
diff --git a/windows/wincons.c b/windows/wincons.c
deleted file mode 100644
index 414167b4..00000000
--- a/windows/wincons.c
+++ /dev/null
@@ -1,452 +0,0 @@
-/*
- * wincons.c - various interactive-prompt routines shared between
- * the Windows console PuTTY tools
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-
-#include "putty.h"
-#include "storage.h"
-#include "ssh.h"
-#include "console.h"
-
-void cleanup_exit(int code)
-{
- /*
- * Clean up.
- */
- sk_cleanup();
-
- random_save_seed();
-
- exit(code);
-}
-
-void console_print_error_msg(const char *prefix, const char *msg)
-{
- fputs(prefix, stderr);
- fputs(": ", stderr);
- fputs(msg, stderr);
- fputc('\n', stderr);
- fflush(stderr);
-}
-
-int console_verify_ssh_host_key(
- Seat *seat, const char *host, int port, const char *keytype,
- char *keystr, const char *keydisp, char **fingerprints,
- void (*callback)(void *ctx, int result), void *ctx)
-{
- int ret;
- HANDLE hin;
- DWORD savemode, i;
- const char *common_fmt, *intro, *prompt;
-
- char line[32];
-
- /*
- * Verify the key against the registry.
- */
- ret = verify_host_key(host, port, keytype, keystr);
-
- if (ret == 0) /* success - key matched OK */
- return 1;
-
- if (ret == 2) { /* key was different */
- common_fmt = hk_wrongmsg_common_fmt;
- intro = hk_wrongmsg_interactive_intro;
- prompt = hk_wrongmsg_interactive_prompt;
- } else { /* key was absent */
- common_fmt = hk_absentmsg_common_fmt;
- intro = hk_absentmsg_interactive_intro;
- prompt = hk_absentmsg_interactive_prompt;
- }
-
- FingerprintType fptype_default =
- ssh2_pick_default_fingerprint(fingerprints);
-
- fprintf(stderr, common_fmt, keytype, fingerprints[fptype_default]);
- if (console_batch_mode) {
- fputs(console_abandoned_msg, stderr);
- return 0;
- }
-
- fputs(intro, stderr);
- fflush(stderr);
-
- while (true) {
- fputs(prompt, stderr);
- fflush(stderr);
-
- line[0] = '\0'; /* fail safe if ReadFile returns no data */
-
- hin = GetStdHandle(STD_INPUT_HANDLE);
- GetConsoleMode(hin, &savemode);
- SetConsoleMode(hin, (savemode | ENABLE_ECHO_INPUT |
- ENABLE_PROCESSED_INPUT | ENABLE_LINE_INPUT));
- ReadFile(hin, line, sizeof(line) - 1, &i, NULL);
- SetConsoleMode(hin, savemode);
-
- if (line[0] == 'i' || line[0] == 'I') {
- fprintf(stderr, "Full public key:\n%s\n", keydisp);
- if (fingerprints[SSH_FPTYPE_SHA256])
- fprintf(stderr, "SHA256 key fingerprint:\n%s\n",
- fingerprints[SSH_FPTYPE_SHA256]);
- if (fingerprints[SSH_FPTYPE_MD5])
- fprintf(stderr, "MD5 key fingerprint:\n%s\n",
- fingerprints[SSH_FPTYPE_MD5]);
- } else {
- break;
- }
- }
-
- /* In case of misplaced reflexes from another program, also recognise 'q'
- * as 'abandon connection rather than trust this key' */
- if (line[0] != '\0' && line[0] != '\r' && line[0] != '\n' &&
- line[0] != 'q' && line[0] != 'Q') {
- if (line[0] == 'y' || line[0] == 'Y')
- store_host_key(host, port, keytype, keystr);
- return 1;
- } else {
- fputs(console_abandoned_msg, stderr);
- return 0;
- }
-}
-
-int console_confirm_weak_crypto_primitive(
- Seat *seat, const char *algtype, const char *algname,
- void (*callback)(void *ctx, int result), void *ctx)
-{
- HANDLE hin;
- DWORD savemode, i;
-
- char line[32];
-
- fprintf(stderr, weakcrypto_msg_common_fmt, algtype, algname);
-
- if (console_batch_mode) {
- fputs(console_abandoned_msg, stderr);
- return 0;
- }
-
- fputs(console_continue_prompt, stderr);
- fflush(stderr);
-
- hin = GetStdHandle(STD_INPUT_HANDLE);
- GetConsoleMode(hin, &savemode);
- SetConsoleMode(hin, (savemode | ENABLE_ECHO_INPUT |
- ENABLE_PROCESSED_INPUT | ENABLE_LINE_INPUT));
- ReadFile(hin, line, sizeof(line) - 1, &i, NULL);
- SetConsoleMode(hin, savemode);
-
- if (line[0] == 'y' || line[0] == 'Y') {
- return 1;
- } else {
- fputs(console_abandoned_msg, stderr);
- return 0;
- }
-}
-
-int console_confirm_weak_cached_hostkey(
- Seat *seat, const char *algname, const char *betteralgs,
- void (*callback)(void *ctx, int result), void *ctx)
-{
- HANDLE hin;
- DWORD savemode, i;
-
- char line[32];
-
- fprintf(stderr, weakhk_msg_common_fmt, algname, betteralgs);
-
- if (console_batch_mode) {
- fputs(console_abandoned_msg, stderr);
- return 0;
- }
-
- fputs(console_continue_prompt, stderr);
- fflush(stderr);
-
- hin = GetStdHandle(STD_INPUT_HANDLE);
- GetConsoleMode(hin, &savemode);
- SetConsoleMode(hin, (savemode | ENABLE_ECHO_INPUT |
- ENABLE_PROCESSED_INPUT | ENABLE_LINE_INPUT));
- ReadFile(hin, line, sizeof(line) - 1, &i, NULL);
- SetConsoleMode(hin, savemode);
-
- if (line[0] == 'y' || line[0] == 'Y') {
- return 1;
- } else {
- fputs(console_abandoned_msg, stderr);
- return 0;
- }
-}
-
-bool is_interactive(void)
-{
- return is_console_handle(GetStdHandle(STD_INPUT_HANDLE));
-}
-
-bool console_antispoof_prompt = true;
-bool console_set_trust_status(Seat *seat, bool trusted)
-{
- if (console_batch_mode || !is_interactive() || !console_antispoof_prompt) {
- /*
- * In batch mode, we don't need to worry about the server
- * mimicking our interactive authentication, because the user
- * already knows not to expect any.
- *
- * If standard input isn't connected to a terminal, likewise,
- * because even if the server did send a spoof authentication
- * prompt, the user couldn't respond to it via the terminal
- * anyway.
- *
- * We also vacuously return success if the user has purposely
- * disabled the antispoof prompt.
- */
- return true;
- }
-
- return false;
-}
-
-/*
- * Ask whether to wipe a session log file before writing to it.
- * Returns 2 for wipe, 1 for append, 0 for cancel (don't log).
- */
-int console_askappend(LogPolicy *lp, Filename *filename,
- void (*callback)(void *ctx, int result), void *ctx)
-{
- HANDLE hin;
- DWORD savemode, i;
-
- static const char msgtemplate[] =
- "The session log file \"%.*s\" already exists.\n"
- "You can overwrite it with a new session log,\n"
- "append your session log to the end of it,\n"
- "or disable session logging for this session.\n"
- "Enter \"y\" to wipe the file, \"n\" to append to it,\n"
- "or just press Return to disable logging.\n"
- "Wipe the log file? (y/n, Return cancels logging) ";
-
- static const char msgtemplate_batch[] =
- "The session log file \"%.*s\" already exists.\n"
- "Logging will not be enabled.\n";
-
- char line[32];
-
- if (console_batch_mode) {
- fprintf(stderr, msgtemplate_batch, FILENAME_MAX, filename->path);
- fflush(stderr);
- return 0;
- }
- fprintf(stderr, msgtemplate, FILENAME_MAX, filename->path);
- fflush(stderr);
-
- hin = GetStdHandle(STD_INPUT_HANDLE);
- GetConsoleMode(hin, &savemode);
- SetConsoleMode(hin, (savemode | ENABLE_ECHO_INPUT |
- ENABLE_PROCESSED_INPUT | ENABLE_LINE_INPUT));
- ReadFile(hin, line, sizeof(line) - 1, &i, NULL);
- SetConsoleMode(hin, savemode);
-
- if (line[0] == 'y' || line[0] == 'Y')
- return 2;
- else if (line[0] == 'n' || line[0] == 'N')
- return 1;
- else
- return 0;
-}
-
-/*
- * Warn about the obsolescent key file format.
- *
- * Uniquely among these functions, this one does _not_ expect a
- * frontend handle. This means that if PuTTY is ported to a
- * platform which requires frontend handles, this function will be
- * an anomaly. Fortunately, the problem it addresses will not have
- * been present on that platform, so it can plausibly be
- * implemented as an empty function.
- */
-void old_keyfile_warning(void)
-{
- static const char message[] =
- "You are loading an SSH-2 private key which has an\n"
- "old version of the file format. This means your key\n"
- "file is not fully tamperproof. Future versions of\n"
- "PuTTY may stop supporting this private key format,\n"
- "so we recommend you convert your key to the new\n"
- "format.\n"
- "\n"
- "Once the key is loaded into PuTTYgen, you can perform\n"
- "this conversion simply by saving it again.\n";
-
- fputs(message, stderr);
-}
-
-/*
- * Display the fingerprints of the PGP Master Keys to the user.
- */
-void pgp_fingerprints(void)
-{
- fputs("These are the fingerprints of the PuTTY PGP Master Keys. They can\n"
- "be used to establish a trust path from this executable to another\n"
- "one. See the manual for more information.\n"
- "(Note: these fingerprints have nothing to do with SSH!)\n"
- "\n"
- "PuTTY Master Key as of " PGP_MASTER_KEY_YEAR
- " (" PGP_MASTER_KEY_DETAILS "):\n"
- " " PGP_MASTER_KEY_FP "\n\n"
- "Previous Master Key (" PGP_PREV_MASTER_KEY_YEAR
- ", " PGP_PREV_MASTER_KEY_DETAILS "):\n"
- " " PGP_PREV_MASTER_KEY_FP "\n", stdout);
-}
-
-void console_logging_error(LogPolicy *lp, const char *string)
-{
- /* Ordinary Event Log entries are displayed in the same way as
- * logging errors, but only in verbose mode */
- fprintf(stderr, "%s\n", string);
- fflush(stderr);
-}
-
-void console_eventlog(LogPolicy *lp, const char *string)
-{
- /* Ordinary Event Log entries are displayed in the same way as
- * logging errors, but only in verbose mode */
- if (lp_verbose(lp))
- console_logging_error(lp, string);
-}
-
-StripCtrlChars *console_stripctrl_new(
- Seat *seat, BinarySink *bs_out, SeatInteractionContext sic)
-{
- return stripctrl_new(bs_out, false, 0);
-}
-
-static void console_write(HANDLE hout, ptrlen data)
-{
- DWORD dummy;
- WriteFile(hout, data.ptr, data.len, &dummy, NULL);
-}
-
-int console_get_userpass_input(prompts_t *p)
-{
- HANDLE hin = INVALID_HANDLE_VALUE, hout = INVALID_HANDLE_VALUE;
- size_t curr_prompt;
-
- /*
- * Zero all the results, in case we abort half-way through.
- */
- {
- int i;
- for (i = 0; i < (int)p->n_prompts; i++)
- prompt_set_result(p->prompts[i], "");
- }
-
- /*
- * The prompts_t might contain a message to be displayed but no
- * actual prompt. More usually, though, it will contain
- * questions that the user needs to answer, in which case we
- * need to ensure that we're able to get the answers.
- */
- if (p->n_prompts) {
- if (console_batch_mode)
- return 0;
- hin = GetStdHandle(STD_INPUT_HANDLE);
- if (hin == INVALID_HANDLE_VALUE) {
- fprintf(stderr, "Cannot get standard input handle\n");
- cleanup_exit(1);
- }
- }
-
- /*
- * And if we have anything to print, we need standard output.
- */
- if ((p->name_reqd && p->name) || p->instruction || p->n_prompts) {
- hout = GetStdHandle(STD_OUTPUT_HANDLE);
- if (hout == INVALID_HANDLE_VALUE) {
- fprintf(stderr, "Cannot get standard output handle\n");
- cleanup_exit(1);
- }
- }
-
- /*
- * Preamble.
- */
- /* We only print the `name' caption if we have to... */
- if (p->name_reqd && p->name) {
- ptrlen plname = ptrlen_from_asciz(p->name);
- console_write(hout, plname);
- if (!ptrlen_endswith(plname, PTRLEN_LITERAL("\n"), NULL))
- console_write(hout, PTRLEN_LITERAL("\n"));
- }
- /* ...but we always print any `instruction'. */
- if (p->instruction) {
- ptrlen plinst = ptrlen_from_asciz(p->instruction);
- console_write(hout, plinst);
- if (!ptrlen_endswith(plinst, PTRLEN_LITERAL("\n"), NULL))
- console_write(hout, PTRLEN_LITERAL("\n"));
- }
-
- for (curr_prompt = 0; curr_prompt < p->n_prompts; curr_prompt++) {
-
- DWORD savemode, newmode;
- prompt_t *pr = p->prompts[curr_prompt];
-
- GetConsoleMode(hin, &savemode);
- newmode = savemode | ENABLE_PROCESSED_INPUT | ENABLE_LINE_INPUT;
- if (!pr->echo)
- newmode &= ~ENABLE_ECHO_INPUT;
- else
- newmode |= ENABLE_ECHO_INPUT;
- SetConsoleMode(hin, newmode);
-
- console_write(hout, ptrlen_from_asciz(pr->prompt));
-
- bool failed = false;
- while (1) {
- /*
- * Amount of data to try to read from the console in one
- * go. This isn't completely arbitrary: a user reported
- * that trying to read more than 31366 bytes at a time
- * would fail with ERROR_NOT_ENOUGH_MEMORY on Windows 7,
- * and Ruby's Win32 support module has evidence of a
- * similar workaround:
- *
- * https://github.com/ruby/ruby/blob/0aa5195262d4193d3accf3e6b9bad236238b816b/win32/win32.c#L6842
- *
- * To keep things simple, I stick with a nice round power
- * of 2 rather than trying to go to the very limit of that
- * bug. (We're typically reading user passphrases and the
- * like here, so even this much is overkill really.)
- */
- DWORD toread = 16384;
-
- size_t prev_result_len = pr->result->len;
- void *ptr = strbuf_append(pr->result, toread);
-
- DWORD ret = 0;
- if (!ReadFile(hin, ptr, toread, &ret, NULL) || ret == 0) {
- failed = true;
- break;
- }
-
- strbuf_shrink_to(pr->result, prev_result_len + ret);
- if (strbuf_chomp(pr->result, '\n')) {
- strbuf_chomp(pr->result, '\r');
- break;
- }
- }
-
- SetConsoleMode(hin, savemode);
-
- if (!pr->echo)
- console_write(hout, PTRLEN_LITERAL("\r\n"));
-
- if (failed) {
- return 0; /* failure due to read error */
- }
- }
-
- return 1; /* success */
-}
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