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-rw-r--r--MISC.C422
1 files changed, 0 insertions, 422 deletions
diff --git a/MISC.C b/MISC.C
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-/*
- * Platform-independent routines shared between all PuTTY programs.
- *
- * This file contains functions that use the kind of infrastructure
- * like conf.c that tends to only live in the main applications, or
- * that do things that only something like a main PuTTY application
- * would need. So standalone test programs should generally be able to
- * avoid linking against it.
- *
- * More standalone functions that depend on nothing but the C library
- * live in utils.c.
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <stdarg.h>
-#include <limits.h>
-#include <ctype.h>
-#include <assert.h>
-
-#include "defs.h"
-#include "putty.h"
-#include "misc.h"
-
-#define BASE64_CHARS_NOEQ \
- "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ+/"
-#define BASE64_CHARS_ALL BASE64_CHARS_NOEQ "="
-
-void seat_connection_fatal(Seat *seat, const char *fmt, ...)
-{
- va_list ap;
- char *msg;
-
- va_start(ap, fmt);
- msg = dupvprintf(fmt, ap);
- va_end(ap);
-
- seat->vt->connection_fatal(seat, msg);
- sfree(msg); /* if we return */
-}
-
-prompts_t *new_prompts(void)
-{
- prompts_t *p = snew(prompts_t);
- p->prompts = NULL;
- p->n_prompts = p->prompts_size = 0;
- p->data = NULL;
- p->to_server = true; /* to be on the safe side */
- p->name = p->instruction = NULL;
- p->name_reqd = p->instr_reqd = false;
- return p;
-}
-void add_prompt(prompts_t *p, char *promptstr, bool echo)
-{
- prompt_t *pr = snew(prompt_t);
- pr->prompt = promptstr;
- pr->echo = echo;
- pr->result = strbuf_new_nm();
- sgrowarray(p->prompts, p->prompts_size, p->n_prompts);
- p->prompts[p->n_prompts++] = pr;
-}
-void prompt_set_result(prompt_t *pr, const char *newstr)
-{
- strbuf_clear(pr->result);
- put_datapl(pr->result, ptrlen_from_asciz(newstr));
-}
-const char *prompt_get_result_ref(prompt_t *pr)
-{
- return pr->result->s;
-}
-char *prompt_get_result(prompt_t *pr)
-{
- return dupstr(pr->result->s);
-}
-void free_prompts(prompts_t *p)
-{
- size_t i;
- for (i=0; i < p->n_prompts; i++) {
- prompt_t *pr = p->prompts[i];
- strbuf_free(pr->result);
- sfree(pr->prompt);
- sfree(pr);
- }
- sfree(p->prompts);
- sfree(p->name);
- sfree(p->instruction);
- sfree(p);
-}
-
-/*
- * Determine whether or not a Conf represents a session which can
- * sensibly be launched right now.
- */
-bool conf_launchable(Conf *conf)
-{
- if (conf_get_int(conf, CONF_protocol) == PROT_SERIAL)
- return conf_get_str(conf, CONF_serline)[0] != 0;
- else
- return conf_get_str(conf, CONF_host)[0] != 0;
-}
-
-char const *conf_dest(Conf *conf)
-{
- if (conf_get_int(conf, CONF_protocol) == PROT_SERIAL)
- return conf_get_str(conf, CONF_serline);
- else
- return conf_get_str(conf, CONF_host);
-}
-
-/*
- * Validate a manual host key specification (either entered in the
- * GUI, or via -hostkey). If valid, we return true, and update 'key'
- * to contain a canonicalised version of the key string in 'key'
- * (which is guaranteed to take up at most as much space as the
- * original version), suitable for putting into the Conf. If not
- * valid, we return false.
- */
-bool validate_manual_hostkey(char *key)
-{
- char *p, *q, *r, *s;
-
- /*
- * Step through the string word by word, looking for a word that's
- * in one of the formats we like.
- */
- p = key;
- while ((p += strspn(p, " \t"))[0]) {
- q = p;
- p += strcspn(p, " \t");
- if (*p) *p++ = '\0';
-
- /*
- * Now q is our word.
- */
-
- if (strstartswith(q, "SHA256:")) {
- /* Test for a valid SHA256 key fingerprint. */
- r = q + 7;
- if (strlen(r) == 43 && r[strspn(r, BASE64_CHARS_NOEQ)] == 0)
- return true;
- }
-
- r = q;
- if (strstartswith(r, "MD5:"))
- r += 4;
- if (strlen(r) == 16*3 - 1 &&
- r[strspn(r, "0123456789abcdefABCDEF:")] == 0) {
- /*
- * Test for a valid MD5 key fingerprint. Check the colons
- * are in the right places, and if so, return the same
- * fingerprint canonicalised into lowercase.
- */
- int i;
- for (i = 0; i < 16; i++)
- if (r[3*i] == ':' || r[3*i+1] == ':')
- goto not_fingerprint; /* sorry */
- for (i = 0; i < 15; i++)
- if (r[3*i+2] != ':')
- goto not_fingerprint; /* sorry */
- for (i = 0; i < 16*3 - 1; i++)
- key[i] = tolower(r[i]);
- key[16*3 - 1] = '\0';
- return true;
- }
- not_fingerprint:;
-
- /*
- * Before we check for a public-key blob, trim newlines out of
- * the middle of the word, in case someone's managed to paste
- * in a public-key blob _with_ them.
- */
- for (r = s = q; *r; r++)
- if (*r != '\n' && *r != '\r')
- *s++ = *r;
- *s = '\0';
-
- if (strlen(q) % 4 == 0 && strlen(q) > 2*4 &&
- q[strspn(q, BASE64_CHARS_ALL)] == 0) {
- /*
- * Might be a base64-encoded SSH-2 public key blob. Check
- * that it starts with a sensible algorithm string. No
- * canonicalisation is necessary for this string type.
- *
- * The algorithm string must be at most 64 characters long
- * (RFC 4251 section 6).
- */
- unsigned char decoded[6];
- unsigned alglen;
- int minlen;
- int len = 0;
-
- len += base64_decode_atom(q, decoded+len);
- if (len < 3)
- goto not_ssh2_blob; /* sorry */
- len += base64_decode_atom(q+4, decoded+len);
- if (len < 4)
- goto not_ssh2_blob; /* sorry */
-
- alglen = GET_32BIT_MSB_FIRST(decoded);
- if (alglen > 64)
- goto not_ssh2_blob; /* sorry */
-
- minlen = ((alglen + 4) + 2) / 3;
- if (strlen(q) < minlen)
- goto not_ssh2_blob; /* sorry */
-
- strcpy(key, q);
- return true;
- }
- not_ssh2_blob:;
- }
-
- return false;
-}
-
-char *buildinfo(const char *newline)
-{
- strbuf *buf = strbuf_new();
-
- strbuf_catf(buf, "Build platform: %d-bit %s",
- (int)(CHAR_BIT * sizeof(void *)),
- BUILDINFO_PLATFORM);
-
-#ifdef __clang_version__
-#define FOUND_COMPILER
- strbuf_catf(buf, "%sCompiler: clang %s", newline, __clang_version__);
-#elif defined __GNUC__ && defined __VERSION__
-#define FOUND_COMPILER
- strbuf_catf(buf, "%sCompiler: gcc %s", newline, __VERSION__);
-#endif
-
-#if defined _MSC_VER
-#ifndef FOUND_COMPILER
-#define FOUND_COMPILER
- strbuf_catf(buf, "%sCompiler: ", newline);
-#else
- strbuf_catf(buf, ", emulating ");
-#endif
- strbuf_catf(buf, "Visual Studio");
-
-#if 0
- /*
- * List of _MSC_VER values and their translations taken from
- * https://docs.microsoft.com/en-us/cpp/preprocessor/predefined-macros
- *
- * The pointless #if 0 branch containing this comment is there so
- * that every real clause can start with #elif and there's no
- * anomalous first clause. That way the patch looks nicer when you
- * add extra ones.
- */
-#elif _MSC_VER == 1928 && _MSC_FULL_VER >= 192829500
- /*
- * 16.9 and 16.8 have the same _MSC_VER value, and have to be
- * distinguished by _MSC_FULL_VER. As of 2021-03-04 that is not
- * mentioned on the above page, but see e.g.
- * https://developercommunity.visualstudio.com/t/the-169-cc-compiler-still-uses-the-same-version-nu/1335194#T-N1337120
- * which says that 16.9 builds will have versions starting at
- * 19.28.29500.* and going up. Hence, 19 28 29500 is what we
- * compare _MSC_FULL_VER against above.
- */
- strbuf_catf(buf, " 2019 (16.9)");
-#elif _MSC_VER == 1928
- strbuf_catf(buf, " 2019 (16.8)");
-#elif _MSC_VER == 1927
- strbuf_catf(buf, " 2019 (16.7)");
-#elif _MSC_VER == 1926
- strbuf_catf(buf, " 2019 (16.6)");
-#elif _MSC_VER == 1925
- strbuf_catf(buf, " 2019 (16.5)");
-#elif _MSC_VER == 1924
- strbuf_catf(buf, " 2019 (16.4)");
-#elif _MSC_VER == 1923
- strbuf_catf(buf, " 2019 (16.3)");
-#elif _MSC_VER == 1922
- strbuf_catf(buf, " 2019 (16.2)");
-#elif _MSC_VER == 1921
- strbuf_catf(buf, " 2019 (16.1)");
-#elif _MSC_VER == 1920
- strbuf_catf(buf, " 2019 (16.0)");
-#elif _MSC_VER == 1916
- strbuf_catf(buf, " 2017 version 15.9");
-#elif _MSC_VER == 1915
- strbuf_catf(buf, " 2017 version 15.8");
-#elif _MSC_VER == 1914
- strbuf_catf(buf, " 2017 version 15.7");
-#elif _MSC_VER == 1913
- strbuf_catf(buf, " 2017 version 15.6");
-#elif _MSC_VER == 1912
- strbuf_catf(buf, " 2017 version 15.5");
-#elif _MSC_VER == 1911
- strbuf_catf(buf, " 2017 version 15.3");
-#elif _MSC_VER == 1910
- strbuf_catf(buf, " 2017 RTW (15.0)");
-#elif _MSC_VER == 1900
- strbuf_catf(buf, " 2015 (14.0)");
-#elif _MSC_VER == 1800
- strbuf_catf(buf, " 2013 (12.0)");
-#elif _MSC_VER == 1700
- strbuf_catf(buf, " 2012 (11.0)");
-#elif _MSC_VER == 1600
- strbuf_catf(buf, " 2010 (10.0)");
-#elif _MSC_VER == 1500
- strbuf_catf(buf, " 2008 (9.0)");
-#elif _MSC_VER == 1400
- strbuf_catf(buf, " 2005 (8.0)");
-#elif _MSC_VER == 1310
- strbuf_catf(buf, " .NET 2003 (7.1)");
-#elif _MSC_VER == 1300
- strbuf_catf(buf, " .NET 2002 (7.0)");
-#elif _MSC_VER == 1200
- strbuf_catf(buf, " 6.0");
-#else
- strbuf_catf(buf, ", unrecognised version");
-#endif
- strbuf_catf(buf, ", _MSC_VER=%d", (int)_MSC_VER);
-#endif
-
-#ifdef BUILDINFO_GTK
- {
- char *gtk_buildinfo = buildinfo_gtk_version();
- if (gtk_buildinfo) {
- strbuf_catf(buf, "%sCompiled against GTK version %s",
- newline, gtk_buildinfo);
- sfree(gtk_buildinfo);
- }
- }
-#endif
-#if defined _WINDOWS
- {
- int echm = has_embedded_chm();
- if (echm >= 0)
- strbuf_catf(buf, "%sEmbedded HTML Help file: %s", newline,
- echm ? "yes" : "no");
- }
-#endif
-
-#if defined _WINDOWS && defined MINEFIELD
- strbuf_catf(buf, "%sBuild option: MINEFIELD", newline);
-#endif
-#ifdef NO_SECURITY
- strbuf_catf(buf, "%sBuild option: NO_SECURITY", newline);
-#endif
-#ifdef NO_SECUREZEROMEMORY
- strbuf_catf(buf, "%sBuild option: NO_SECUREZEROMEMORY", newline);
-#endif
-#ifdef NO_IPV6
- strbuf_catf(buf, "%sBuild option: NO_IPV6", newline);
-#endif
-#ifdef NO_GSSAPI
- strbuf_catf(buf, "%sBuild option: NO_GSSAPI", newline);
-#endif
-#ifdef STATIC_GSSAPI
- strbuf_catf(buf, "%sBuild option: STATIC_GSSAPI", newline);
-#endif
-#ifdef UNPROTECT
- strbuf_catf(buf, "%sBuild option: UNPROTECT", newline);
-#endif
-#ifdef FUZZING
- strbuf_catf(buf, "%sBuild option: FUZZING", newline);
-#endif
-#ifdef DEBUG
- strbuf_catf(buf, "%sBuild option: DEBUG", newline);
-#endif
-
- strbuf_catf(buf, "%sSource commit: %s", newline, commitid);
-
- return strbuf_to_str(buf);
-}
-
-size_t nullseat_output(
- Seat *seat, bool is_stderr, const void *data, size_t len) { return 0; }
-bool nullseat_eof(Seat *seat) { return true; }
-int nullseat_get_userpass_input(
- Seat *seat, prompts_t *p, bufchain *input) { return 0; }
-void nullseat_notify_remote_exit(Seat *seat) {}
-void nullseat_connection_fatal(Seat *seat, const char *message) {}
-void nullseat_update_specials_menu(Seat *seat) {}
-char *nullseat_get_ttymode(Seat *seat, const char *mode) { return NULL; }
-void nullseat_set_busy_status(Seat *seat, BusyStatus status) {}
-int nullseat_verify_ssh_host_key(
- Seat *seat, const char *host, int port, const char *keytype,
- char *keystr, const char *keydisp, char **key_fingerprints,
- void (*callback)(void *ctx, int result), void *ctx) { return 0; }
-int nullseat_confirm_weak_crypto_primitive(
- Seat *seat, const char *algtype, const char *algname,
- void (*callback)(void *ctx, int result), void *ctx) { return 0; }
-int nullseat_confirm_weak_cached_hostkey(
- Seat *seat, const char *algname, const char *betteralgs,
- void (*callback)(void *ctx, int result), void *ctx) { return 0; }
-bool nullseat_is_never_utf8(Seat *seat) { return false; }
-bool nullseat_is_always_utf8(Seat *seat) { return true; }
-void nullseat_echoedit_update(Seat *seat, bool echoing, bool editing) {}
-const char *nullseat_get_x_display(Seat *seat) { return NULL; }
-bool nullseat_get_windowid(Seat *seat, long *id_out) { return false; }
-bool nullseat_get_window_pixel_size(
- Seat *seat, int *width, int *height) { return false; }
-StripCtrlChars *nullseat_stripctrl_new(
- Seat *seat, BinarySink *bs_out, SeatInteractionContext sic) {return NULL;}
-bool nullseat_set_trust_status(Seat *seat, bool tr) { return false; }
-bool nullseat_set_trust_status_vacuously(Seat *seat, bool tr) { return true; }
-bool nullseat_verbose_no(Seat *seat) { return false; }
-bool nullseat_verbose_yes(Seat *seat) { return true; }
-bool nullseat_interactive_no(Seat *seat) { return false; }
-bool nullseat_interactive_yes(Seat *seat) { return true; }
-bool nullseat_get_cursor_position(Seat *seat, int *x, int *y) { return false; }
-
-bool null_lp_verbose_no(LogPolicy *lp) { return false; }
-bool null_lp_verbose_yes(LogPolicy *lp) { return true; }
-
-void sk_free_peer_info(SocketPeerInfo *pi)
-{
- if (pi) {
- sfree((char *)pi->addr_text);
- sfree((char *)pi->log_text);
- sfree(pi);
- }
-}
-
-void out_of_memory(void)
-{
- modalfatalbox("Out of memory");
-}
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