nail.h

   1 /*@ S-nail - a mail user agent derived from Berkeley Mail.
   2  *@ Header inclusion, macros, constants, types and the global var declarations.
   3  *
   4  * Copyright (c) 2000-2004 Gunnar Ritter, Freiburg i. Br., Germany.
   5  * Copyright (c) 2012 - 2014 Steffen (Daode) Nurpmeso <sdaoden@users.sf.net>.
   6  */
   7 /*
   8  * Copyright (c) 1980, 1993
   9  * The Regents of the University of California.  All rights reserved.
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions and the following disclaimer.
  16  * 2. Redistributions in binary form must reproduce the above copyright
  17  *    notice, this list of conditions and the following disclaimer in the
  18  *    documentation and/or other materials provided with the distribution.
  19  * 3. All advertising materials mentioning features or use of this software
  20  *    must display the following acknowledgement:
  21  *    This product includes software developed by the University of
  22  *    California, Berkeley and its contributors.
  23  * 4. Neither the name of the University nor the names of its contributors
  24  *    may be used to endorse or promote products derived from this software
  25  *    without specific prior written permission.
  26  *
  27  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  28  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  29  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  30  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  31  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  32  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  33  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  34  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  35  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  36  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  37  * SUCH DAMAGE.
  38  */
  39
  40 /*
  41  * Mail -- a mail program
  42  *
  43  * Author: Kurt Shoens (UCB) March 25, 1978
  44  */
  45
  46 #include "config.h"
  47
  48 #include <sys/stat.h>
  49 #include <sys/types.h>
  50
  51 #include <errno.h>
  52 #include <limits.h>
  53 #include <setjmp.h>
  54 #include <signal.h>
  55 #include <stdarg.h>
  56 #include <stdio.h>
  57 #include <stdlib.h>
  58 #include <string.h>
  59 #include <termios.h>
  60 #include <time.h>
  61 #include <unistd.h>
  62
  63 #if defined __STDC_VERSION__ && __STDC_VERSION__ + 0 >= 199901L
  64 # include <stdint.h>
  65 #else
  66 # include <inttypes.h>
  67 #endif
  68
  69 #ifdef HAVE_C90AMEND1
  70 # include <wchar.h>
  71 # include <wctype.h>
  72 #endif
  73 #ifdef HAVE_DEBUG
  74 # include <assert.h>
  75 #endif
  76 #ifdef HAVE_ICONV
  77 # include <iconv.h>
  78 #endif
  79 #ifdef HAVE_REGEX
  80 # include <regex.h>
  81 #endif
  82
  83 #ifdef HAVE_OPENSSL_MD5
  84 # include <openssl/md5.h>
  85 #endif
  86
  87 /*
  88  * Constants, some nail-specific macros
  89  */
  90
  91 #if !defined NI_MAXHOST || NI_MAXHOST < 1025
  92 # undef NI_MAXHOST
  93 # define NI_MAXHOST     1025
  94 #endif
  95
  96 /* TODO PATH_MAX: fixed-size buffer is always wrong (think NFS) */
  97 #ifndef PATH_MAX
  98 # ifdef MAXPATHLEN
  99 #  define PATH_MAX      MAXPATHLEN
 100 # else
 101 #  define PATH_MAX      1024        /* _XOPEN_PATH_MAX POSIX 2008/Cor 1-2013 */
 102 # endif
 103 #endif
 104
 105 #ifndef STDIN_FILENO
 106 # define STDIN_FILENO   0
 107 #endif
 108 #ifndef STDOUT_FILENO
 109 # define STDOUT_FILENO  1
 110 #endif
 111 #ifndef STDERR_FILENO
 112 # define STDERR_FILENO  2
 113 #endif
 114
 115 #ifdef NSIG_MAX
 116 # undef NSIG
 117 # define NSIG           NSIG_MAX
 118 #elif !defined NSIG
 119 # define NSIG           ((sizeof(sigset_t) * 8) - 1)
 120 #endif
 121
 122 /*  */
 123
 124 #if BUFSIZ + 0 > 2560               /* TODO simply use BUFSIZ? */
 125 # define LINESIZE       BUFSIZ      /* max readable line width */
 126 #else
 127 # define LINESIZE       2560
 128 #endif
 129 #define BUFFER_SIZE     (BUFSIZ >= (1u << 13) ? BUFSIZ : (1u << 14))
 130
 131 /* Number of Not-Yet-Dead calls that are remembered */
 132 #if defined HAVE_DEBUG || defined HAVE_DEVEL || defined HAVE_NYD2
 133 # ifdef HAVE_NYD2
 134 #  define NYD_CALLS_MAX (25 * 99)
 135 # elif defined HAVE_DEVEL
 136 #  define NYD_CALLS_MAX (25 * 66)
 137 # else
 138 #  define NYD_CALLS_MAX (25 * 33)
 139 # endif
 140 #endif
 141
 142 #define APPEND                   /* New mail goes to end of mailbox */
 143 #define CBAD            (-15555)
 144 #define ESCAPE          '~'      /* Default escape for sending */
 145 #define FIO_STACK_SIZE  20       /* Maximum recursion for sourcing */
 146 #define HIST_SIZE       242      /* tty.c: history list default size */
 147 #define HSHSIZE         23       /* Hash prime TODO make dynamic, obsolete */
 148 #define MAXARGC         1024     /* Maximum list of raw strings */
 149 #define MAXEXP          25       /* Maximum expansion of aliases */
 150 #define PROMPT_BUFFER_SIZE 80    /* getprompt() bufsize (> 3!) */
 151
 152 #define ACCOUNT_NULL    "null"   /* Name of "null" account */
 153 #define MAILRC          "~/.mailrc"
 154 #define NETRC           "~/.netrc"
 155 #define TMPDIR_FALLBACK "/tmp"
 156
 157 /* Some environment variables for pipe hooks */
 158 #define AGENT_USER      "NAIL_USER"
 159 #define AGENT_USER_ENC  "NAIL_USER_ENC"
 160 #define AGENT_HOST      "NAIL_HOST"
 161 #define AGENT_HOST_PORT "NAIL_HOST_PORT"
 162
 163 #undef COLOUR
 164 #ifdef HAVE_COLOUR
 165 # define COLOUR(X)      X
 166 #else
 167 # define COLOUR(X)
 168 #endif
 169 #define COLOUR_MSGINFO  "fg=green"
 170 #define COLOUR_PARTINFO "fg=brown"
 171 #define COLOUR_FROM_    "fg=brown"
 172 #define COLOUR_HEADER   "fg=red"
 173 #define COLOUR_UHEADER  "ft=bold,fg=red"
 174 #define COLOUR_TERMS    \
 175    "cons25,linux,rxvt,rxvt-unicode,screen,sun,vt100,vt220,wsvt25,xterm"
 176 #define COLOUR_USER_HEADERS "from,subject"
 177
 178 #define FROM_DATEBUF    64    /* Size of RFC 4155 From_ line date */
 179 #define DATE_DAYSYEAR   365L
 180 #define DATE_SECSMIN    60L
 181 #define DATE_MINSHOUR   60L
 182 #define DATE_HOURSDAY   24L
 183 #define DATE_SECSDAY    (DATE_SECSMIN * DATE_MINSHOUR * DATE_HOURSDAY)
 184
 185 /* *indentprefix* default as of POSIX */
 186 #define INDENT_DEFAULT  "\t"
 187
 188 /* Default *encoding* as enum conversion below */
 189 #define MIME_DEFAULT_ENCODING CONV_TOQP
 190
 191 /* Maximum allowed line length in a mail before QP folding is necessary), and
 192  * the real limit we go for */
 193 #define MIME_LINELEN_MAX   998   /* Plus CRLF */
 194 #define MIME_LINELEN_LIMIT (MIME_LINELEN_MAX - 48)
 195
 196 /* Ditto, SHOULD */
 197 #define MIME_LINELEN_NORM  78    /* Plus CRLF */
 198
 199 /* And in headers which contain an encoded word according to RFC 2047 there is
 200  * yet another limit */
 201 #define MIME_LINELEN_HEADER_WITH_ENCODED_WORD_MAX 76
 202
 203 /* Locations of mime.types(5) */
 204 #define MIME_TYPES_USR  "~/.mime.types"
 205 #define MIME_TYPES_SYS  "/etc/mime.types"
 206
 207 /* Fallback MIME charsets, if *charset-7bit* and *charset-8bit* or not set */
 208 #define CHARSET_7BIT    "US-ASCII"
 209 #ifdef HAVE_ICONV
 210 # define CHARSET_8BIT      "UTF-8"
 211 # define CHARSET_8BIT_OKEY charset_8bit
 212 #else
 213 # define CHARSET_8BIT      "ISO-8859-1"
 214 # define CHARSET_8BIT_OKEY ttycharset
 215 #endif
 216
 217 /* Some environment variables for pipe hooks */
 218 #define PIPEHOOK_FILENAME           "NAIL_FILENAME"
 219 #define PIPEHOOK_FILENAME_GENERATED "NAIL_FILENAME_GENERATED"
 220 #define PIPEHOOK_CONTENT            "NAIL_CONTENT"
 221 #define PIPEHOOK_CONTENT_EVIDENCE   "NAIL_CONTENT_EVIDENCE"
 222
 223 /* Is *W* a quoting (ASCII only) character? */
 224 #define ISQUOTE(W)      \
 225    ((W) == L'>' || (W) == L'|' || (W) == L'}' || (W) == L':')
 226
 227 /* Maximum number of quote characters (not bytes!) that'll be used on
 228  * follow lines when compressing leading quote characters */
 229 #define QUOTE_MAX       42
 230
 231 /* How much spaces should a <tab> count when *quote-fold*ing? (power-of-two!) */
 232 #define QUOTE_TAB_SPACES 8
 233
 234 /* Maximum size of a message that is passed through to the spam system */
 235 #define SPAM_MAXSIZE    420000
 236
 237 /* String dope: dynamic buffer size, and size of the single builtin one that's
 238  * used first */
 239 #define SBUFFER_SIZE    0x18000u
 240 #define SBUFFER_BUILTIN 0x2000u
 241
 242 /* These come from the configuration (named Xxy to not clash with sh(1)..) */
 243 #ifndef XSHELL
 244 # define XSHELL         "/bin/sh"
 245 #endif
 246 #ifndef XLISTER
 247 # define XLISTER        "ls"
 248 #endif
 249 #ifndef XPAGER
 250 # define XPAGER         "more"
 251 #endif
 252
 253 /*
 254  * CC support, generic macros etc.
 255  */
 256
 257 #if defined __clang__
 258 # define CC_CLANG          1
 259 # define PREREQ_CLANG(X,Y) \
 260    (__clang_major__ + 0 > (X) || \
 261     (__clang_major__ + 0 == (X) && __clang_minor__ + 0 >= (Y)))
 262 # define __EXTEN           __extension__
 263 #elif defined __GNUC__
 264 # define CC_GCC            1
 265 # define PREREQ_GCC(X,Y)   \
 266    (__GNUC__ + 0 > (X) || (__GNUC__ + 0 == (X) && __GNUC_MINOR__ + 0 >= (Y)))
 267 # define __EXTEN           __extension__
 268 #endif
 269
 270 #ifndef CC_CLANG
 271 # define CC_CLANG          0
 272 # define PREREQ_CLANG(X,Y) 0
 273 #endif
 274 #ifndef CC_GCC
 275 # define CC_GCC            0
 276 # define PREREQ_GCC(X,Y)   0
 277 #endif
 278 #ifndef __EXTEN
 279 # define __EXTEN
 280 #endif
 281
 282 /* XXX Suppress unused return values via #pragma's;
 283  * XXX Wild guesses: clang(1) 1.7 and (OpenBSD) gcc(1) 4.2.1 don't work */
 284 #if PREREQ_CLANG(3, 4)
 285 # pragma clang diagnostic ignored "-Wunused-result"
 286 #elif PREREQ_GCC(4, 7)
 287 # pragma GCC diagnostic ignored "-Wunused-result"
 288 #endif
 289
 290 /* For injection macros like DBG(), NATCH_CHAR() */
 291 #define COMMA           ,
 292
 293 #define EMPTY_FILE(F)   typedef int CONCAT(avoid_empty_file__, F);
 294
 295 /* Pointer to size_t */
 296 #define PTR2SIZE(X)     ((size_t)(uintptr_t)(X))
 297
 298 /* Pointer comparison (types from below) */
 299 #define PTRCMP(A,C,B)   ((uintptr_t)(A) C (uintptr_t)(B))
 300
 301 /* Ditto, compare (maybe mixed-signed) integers cases to T bits, unsigned;
 302  * Note: doesn't sign-extend correctly, that's still up to the caller */
 303 #define UICMP(T,A,C,B)  ((ui ## T ## _t)(A) C (ui ## T ## _t)(B))
 304
 305 /* Members in constant array */
 306 #ifndef NELEM
 307 # define NELEM(A)       (sizeof(A) / sizeof(A[0]))
 308 #endif
 309
 310 /* sizeof() for member fields */
 311 #define SIZEOF_FIELD(T,F) sizeof(((T *)NULL)->F)
 312
 313 /* Casts-away (*NOT* cast-away) */
 314 #define UNUSED(X)       ((void)(X))
 315 #define UNCONST(P)      ((void*)(uintptr_t)(void const*)(P))
 316 #define UNVOLATILE(P)   ((void*)(uintptr_t)(void volatile*)(P))
 317 #define UNXXX(T,C,P)    ((T)(uintptr_t)(C)(P))
 318
 319 /* __STDC_VERSION__ is ISO C99, so also use __STDC__, which should work */
 320 #if defined __STDC__ || defined __STDC_VERSION__ /*|| defined __cplusplus*/
 321 # define STRING(X)      #X
 322 # define XSTRING(X)     STRING(X)
 323 # define CONCAT(S1,S2)  _CONCAT(S1, S2)
 324 # define _CONCAT(S1,S2) S1 ## S2
 325 #else
 326 # define STRING(X)      "X"
 327 # define XSTRING        STRING
 328 # define CONCAT(S1,S2)  S1/**/S2
 329 #endif
 330
 331 #if defined __STDC_VERSION__ && __STDC_VERSION__ + 0 >= 199901L
 332   /* Variable size arrays and structure fields */
 333 # define VFIELD_SIZE(X)
 334 # define VFIELD_SIZEOF(T,F) (0)
 335   /* Inline functions */
 336 # define HAVE_INLINE
 337 # define INLINE         inline
 338 # define SINLINE        static inline
 339 #else
 340 # define VFIELD_SIZE(X) (X)
 341 # define VFIELD_SIZEOF(T,F) SIZEOF_FIELD(T, F)
 342 # if CC_CLANG || PREREQ_GCC(2, 9)
 343 #   define INLINE       static __inline
 344 #   define SINLINE      static __inline
 345 # else
 346 #   define INLINE
 347 #   define SINLINE      static
 348 # endif
 349 #endif
 350
 351 #undef __FUN__
 352 #if defined __STDC_VERSION__ && __STDC_VERSION__ + 0 >= 199901L
 353 # define __FUN__        __func__
 354 #elif CC_CLANG || PREREQ_GCC(3, 4)
 355 # define __FUN__        __FUNCTION__
 356 #else
 357 # define __FUN__        uagent   /* Something that is not a literal */
 358 #endif
 359
 360 #if defined __predict_true && defined __predict_false
 361 # define LIKELY(X)      __predict_true(X)
 362 # define UNLIKELY(X)    __predict_false(X)
 363 #elif CC_CLANG || PREREQ_GCC(2, 96)
 364 # define LIKELY(X)      __builtin_expect(X, 1)
 365 # define UNLIKELY(X)    __builtin_expect(X, 0)
 366 #else
 367 # define LIKELY(X)      (X)
 368 # define UNLIKELY(X)    (X)
 369 #endif
 370
 371 #undef HAVE_NATCH_CHAR
 372 #undef NATCH_CHAR
 373 #if defined HAVE_SETLOCALE && defined HAVE_C90AMEND1 && defined HAVE_WCWIDTH
 374 # define HAVE_NATCH_CHAR
 375 # define NATCH_CHAR(X)  X
 376 #else
 377 # define NATCH_CHAR(X)
 378 #endif
 379
 380 /* Compile-Time-Assert */
 381 #define CTA(TEST)       _CTA_1(TEST, __LINE__)
 382 #define _CTA_1(TEST,L)  _CTA_2(TEST, L)
 383 #define _CTA_2(TEST,L)  \
 384    typedef char COMPILE_TIME_ASSERT_failed_at_line_ ## L[(TEST) ? 1 : -1]
 385
 386 #undef ISPOW2
 387 #define ISPOW2(X)       ((((X) - 1) & (X)) == 0)
 388 #undef MIN
 389 #define MIN(A, B)       ((A) < (B) ? (A) : (B))
 390 #undef MAX
 391 #define MAX(A, B)       ((A) < (B) ? (B) : (A))
 392 #undef ABS
 393 #define ABS(A)          ((A) < 0 ? -(A) : (A))
 394
 395 #undef DBG
 396 #undef NDBG
 397 #ifndef HAVE_DEBUG
 398 # undef assert
 399 # define assert(X)      UNUSED(0)
 400 # define DBG(X)
 401 # define NDBG(X)        X
 402 #else
 403 # define DBG(X)         X
 404 # define NDBG(X)
 405 #endif
 406
 407 /* Translation (init in main.c) */
 408 #undef _
 409 #undef N_
 410 #undef V_
 411 #define _(S)            (S)
 412 #define N_(S)           (S)
 413 #define V_(S)           (S)
 414
 415 /*
 416  * Types
 417  */
 418
 419 typedef unsigned long   ul_it;
 420 typedef unsigned int    ui_it;
 421 typedef unsigned short  us_it;
 422 typedef unsigned char   uc_it;
 423
 424 typedef signed long     sl_it;
 425 typedef signed int      si_it;
 426 typedef signed short    ss_it;
 427 typedef signed char     sc_it;
 428
 429 #ifdef UINT8_MAX
 430 # define UI8_MAX        UINT8_MAX
 431 # define SI8_MIN        INT8_MIN
 432 # define SI8_MAX        INT8_MAX
 433 typedef uint8_t         ui8_t;
 434 typedef int8_t          si8_t;
 435 #elif UCHAR_MAX != 255
 436 # error UCHAR_MAX must be 255
 437 #else
 438 # define UI8_MAX        UCHAR_MAX
 439 # define SI8_MIN        CHAR_MIN
 440 # define SI8_MAX        CHAR_MAX
 441 typedef unsigned char   ui8_t;
 442 typedef signed char     si8_t;
 443 #endif
 444
 445 #ifdef UINT16_MAX
 446 # define UI16_MAX       UINT16_MAX
 447 # define SI16_MIN       INT16_MIN
 448 # define SI16_MAX       INT16_MAX
 449 typedef uint16_t        ui16_t;
 450 typedef int16_t         si16_t;
 451 #elif USHRT_MAX != 0xFFFFu
 452 # error USHRT_MAX must be 0xFFFF
 453 #else
 454 # define UI16_MAX       USHRT_MAX
 455 # define SI16_MIN       SHRT_MIN
 456 # define SI16_MAX       SHRT_MAX
 457 typedef unsigned short  ui16_t;
 458 typedef signed short    si16_t;
 459 #endif
 460
 461 #ifdef UINT32_MAX
 462 # define UI32_MAX       UINT32_MAX
 463 # define SI32_MIN       INT32_MIN
 464 # define SI32_MAX       INT32_MAX
 465 typedef uint32_t        ui32_t;
 466 typedef int32_t         si32_t;
 467 #elif ULONG_MAX == 0xFFFFFFFFu
 468 # define UI32_MAX       ULONG_MAX
 469 # define SI32_MIN       LONG_MIN
 470 # define SI32_MAX       LONG_MAX
 471 typedef unsigned long int  ui32_t;
 472 typedef signed long int    si32_t;
 473 #elif UINT_MAX != 0xFFFFFFFFu
 474 # error UINT_MAX must be 0xFFFFFFFF
 475 #else
 476 # define UI32_MAX       UINT_MAX
 477 # define SI32_MIN       INT_MIN
 478 # define SI32_MAX       INT_MAX
 479 typedef unsigned int    ui32_t;
 480 typedef signed int      si32_t;
 481 #endif
 482
 483 #ifdef UINT64_MAX
 484 # define UI64_MAX       UINT64_MAX
 485 # define SI64_MIN       INT64_MIN
 486 # define SI64_MAX       INT64_MAX
 487 typedef uint64_t        ui64_t;
 488 #elif ULONG_MAX <= 0xFFFFFFFFu
 489 # if !defined ULLONG_MAX || ULLONG_MAX != 0xFFFFFFFFFFFFFFFFu
 490 #  error We need a 64 bit integer
 491 # else
 492 #  define UI64_MAX      ULLONG_MAX
 493 #  define SI64_MIN      LLONG_MIN
 494 #  define SI64_MAX      LLONG_MAX
 495 __EXTEN typedef unsigned long long  ui64_t;
 496 __EXTEN typedef signed long long    si64_t;
 497 # endif
 498 #else
 499 # define UI64_MAX       ULONG_MAX
 500 # define SI64_MIN       LONG_MIN
 501 # define SI64_MAX       LONG_MAX
 502 typedef unsigned long   ui64_t;
 503 typedef signed long     si64_t;
 504 #endif
 505
 506 /* (So that we can use UICMP() for size_t comparison, too) */
 507 typedef size_t          uiz_t;
 508 typedef ssize_t         siz_t;
 509
 510 #ifndef UINTPTR_MAX
 511 # ifdef SIZE_MAX
 512 #  define uintptr_t     size_t
 513 #  define UINTPTR_MAX   SIZE_MAX
 514 # else
 515 #  define uintptr_t     unsigned long
 516 #  define UINTPTR_MAX   ULONG_MAX
 517 # endif
 518 #endif
 519
 520 /* XXX Note we don't really deal with that the right way in that we pass size_t
 521  * XXX arguments without casting; should do, because above we assert UINT_MAX
 522  * XXX is indeed ui32_t -- CTAsserted in main.c */
 523 #if defined __STDC_VERSION__ && __STDC_VERSION__ + 0 >= 199901L
 524 # define ZFMT           "zu"
 525 # define __ZFMT_CTA()   CTA(1 == 1)
 526 #elif defined SIZE_MAX && SIZE_MAX == 0xFFFFFFFFu && ULONG_MAX != UINT_MAX
 527 # define ZFMT           "u"
 528 # define __ZFMT_CTA()   CTA(sizeof(size_t) == sizeof(unsigned int))
 529 #endif
 530 #ifndef ZFMT
 531 # define ZFMT           "lu"
 532 # define __ZFMT_CTA()   CTA(sizeof(size_t) == sizeof(unsigned long))
 533 #endif
 534
 535 enum {FAL0, TRU1};
 536 typedef si8_t           bool_t;
 537
 538 typedef void (          *sighandler_type)(int);
 539
 540 enum user_options {
 541    OPT_NONE,
 542    OPT_DEBUG      = 1u<< 0,   /* -d / *debug* */
 543    OPT_VERB       = 1u<< 1,   /* -v / *verbose* */
 544    OPT_VERBVERB   = 1u<<19,   /* .. even more verbosity */
 545    OPT_EXISTONLY  = 1u<< 2,   /* -e */
 546    OPT_HEADERSONLY = 1u<< 3,  /* -H */
 547    OPT_HEADERLIST = 1u<< 4,   /* -L */
 548    OPT_NOSRC      = 1u<< 5,   /* -n */
 549    OPT_E_FLAG     = 1u<< 6,   /* -E / *skipemptybody* */
 550    OPT_F_FLAG     = 1u<< 7,   /* -F */
 551    OPT_N_FLAG     = 1u<< 8,   /* -N / *header* */
 552    OPT_R_FLAG     = 1u<< 9,   /* -R */
 553    OPT_r_FLAG     = 1u<<10,   /* -r (plus option_r_arg) */
 554    OPT_t_FLAG     = 1u<<11,   /* -t */
 555    OPT_u_FLAG     = 1u<<12,   /* -u / $USER and pw->pw_uid != getuid(2) */
 556    OPT_TILDE_FLAG = 1u<<13,   /* -~ */
 557    OPT_BATCH_FLAG = 1u<<14,   /* -# */
 558
 559    OPT_SENDMODE   = 1u<<15,   /* Usage case forces send mode */
 560    OPT_INTERACTIVE = 1u<<16,  /* isatty(0) */
 561    OPT_TTYIN      = OPT_INTERACTIVE,
 562    OPT_TTYOUT     = 1u<<17,
 563    OPT_UNICODE    = 1u<<18,   /* We're in an UTF-8 environment */
 564
 565    /* Some easy-access shortcuts */
 566    OPT_D_V        = OPT_DEBUG | OPT_VERB,
 567    OPT_D_VV       = OPT_DEBUG | OPT_VERBVERB
 568 };
 569 #define IS_TTY_SESSION() \
 570    ((options & (OPT_TTYIN | OPT_TTYOUT)) == (OPT_TTYIN | OPT_TTYOUT))
 571
 572 enum exit_status {
 573    EXIT_OK        = EXIT_SUCCESS,
 574    EXIT_ERR       = EXIT_FAILURE,
 575    EXIT_USE       = 2,
 576    EXIT_COLL_ABORT = 1<<1,    /* Message collection was aborted */
 577    EXIT_SEND_ERROR = 1<<2     /* Unspecified send error occurred */
 578 };
 579
 580 enum fedit_mode {
 581    FEDIT_NONE     = 0,
 582    FEDIT_SYSBOX   = 1<<0,     /* %: prefix */
 583    FEDIT_RDONLY   = 1<<1,     /* Readonly (per-box, OPT_R_FLAG is global) */
 584    FEDIT_NEWMAIL  = 1<<2      /* `newmail' operation TODO OBSOLETE THIS! */
 585 };
 586
 587 enum fexp_mode {
 588    FEXP_FULL,                 /* Full expansion */
 589    FEXP_LOCAL     = 1<<0,     /* Result must be local file/maildir */
 590    FEXP_SHELL     = 1<<1,     /* No folder %,#,&,+ stuff, yet sh(1) */
 591    FEXP_NSHORTCUT = 1<<2,     /* Don't expand shortcuts */
 592    FEXP_SILENT    = 1<<3,     /* Don't print but only return errors */
 593    FEXP_MULTIOK   = 1<<4      /* Expansion to many entries is ok */
 594 };
 595
 596 enum flock_type {
 597    FLOCK_READ,
 598    FLOCK_WRITE,
 599    FLOCK_UNLOCK
 600 };
 601
 602 /* <0 means "stop" unless *prompt* extensions are enabled. */
 603 enum prompt_exp {
 604    PROMPT_STOP    = -1,       /* \c */
 605    /* *prompt* extensions: \$, \@ etc. */
 606    PROMPT_DOLLAR  = -2,
 607    PROMPT_AT      = -3
 608 };
 609
 610 enum colourspec {
 611    COLOURSPEC_MSGINFO,
 612    COLOURSPEC_PARTINFO,
 613    COLOURSPEC_FROM_,
 614    COLOURSPEC_HEADER,
 615    COLOURSPEC_UHEADER,
 616    COLOURSPEC_RESET
 617 };
 618
 619 enum okay {
 620    STOP = 0,
 621    OKAY = 1
 622 };
 623
 624 enum mimeenc {
 625    MIME_NONE,        /* message is not in MIME format */
 626    MIME_BIN,         /* message is in binary encoding */
 627    MIME_8B,          /* message is in 8bit encoding */
 628    MIME_7B,          /* message is in 7bit encoding */
 629    MIME_QP,          /* message is quoted-printable */
 630    MIME_B64          /* message is in base64 encoding */
 631 };
 632
 633 enum mime_counter_evidence {
 634    MIMECE_NONE,
 635    MIMECE_USR_OVWR   = 1<<1
 636 };
 637
 638 enum conversion {
 639    CONV_NONE,        /* no conversion */
 640    CONV_7BIT,        /* no conversion, is 7bit */
 641    CONV_FROMQP,      /* convert from quoted-printable */
 642    CONV_TOQP,        /* convert to quoted-printable */
 643    CONV_8BIT,        /* convert to 8bit (iconv) */
 644    CONV_FROMB64,     /* convert from base64 */
 645    CONV_FROMB64_T,   /* convert from base64/text */
 646    CONV_TOB64,       /* convert to base64 */
 647    CONV_FROMHDR,     /* convert from RFC1522 format */
 648    CONV_TOHDR,       /* convert to RFC1522 format */
 649    CONV_TOHDR_A      /* convert addresses for header */
 650 };
 651
 652 enum sendaction {
 653    SEND_MBOX,        /* no conversion to perform */
 654    SEND_RFC822,      /* no conversion, no From_ line */
 655    SEND_TODISP,      /* convert to displayable form */
 656    SEND_TODISP_ALL,  /* same, include all MIME parts */
 657    SEND_SHOW,        /* convert to 'show' command form */
 658    SEND_TOSRCH,      /* convert for IMAP SEARCH */
 659    SEND_TOFILE,      /* convert for saving body to a file */
 660    SEND_TOPIPE,      /* convert for pipe-content/subc. */
 661    SEND_QUOTE,       /* convert for quoting */
 662    SEND_QUOTE_ALL,   /* same, include all MIME parts */
 663    SEND_DECRYPT      /* decrypt */
 664 };
 665
 666 enum mimecontent {
 667    MIME_UNKNOWN,     /* unknown content */
 668    MIME_SUBHDR,      /* inside a multipart subheader */
 669    MIME_822,         /* message/rfc822 content */
 670    MIME_MESSAGE,     /* other message/ content */
 671    MIME_TEXT_PLAIN,  /* text/plain content */
 672    MIME_TEXT_HTML,   /* text/html content */
 673    MIME_TEXT,        /* other text/ content */
 674    MIME_ALTERNATIVE, /* multipart/alternative content */
 675    MIME_DIGEST,      /* multipart/digest content */
 676    MIME_MULTI,       /* other multipart/ content */
 677    MIME_PKCS7,       /* PKCS7 content */
 678    MIME_DISCARD      /* content is discarded */
 679 };
 680
 681 /* Content-Transfer-Encodings as defined in RFC 2045:
 682  * - Quoted-Printable, section 6.7
 683  * - Base64, section 6.8 */
 684 #define QP_LINESIZE     (4 * 19)       /* Max. compliant QP linesize */
 685
 686 #define B64_LINESIZE    (4 * 19)       /* Max. compliant Base64 linesize */
 687 #define B64_ENCODE_INPUT_PER_LINE 57   /* Max. input for Base64 encode/line */
 688
 689 /* xxx QP came later, maybe rewrite all to use mimecte_flags directly? */
 690 enum __mimecte_flags {
 691    MIMECTE_NONE,
 692    MIMECTE_SALLOC = 1<<0,     /* Use salloc(), not srealloc().. */
 693    /* ..result .s,.l point to user buffer of *_LINESIZE+[+[+]] bytes instead */
 694    MIMECTE_BUF    = 1<<1,
 695    MIMECTE_CRLF   = 1<<2,     /* (encode) Append "\r\n" to lines */
 696    MIMECTE_LF     = 1<<3,     /* (encode) Append "\n" to lines */
 697    /* (encode) If one of _CRLF/_LF is set, honour *_LINESIZE+[+[+]] and
 698     * inject the desired line-ending whenever a linewrap is desired */
 699    MIMECTE_MULTILINE = 1<<4,
 700    /* (encode) Quote with header rules, do not generate soft NL breaks? */
 701    MIMECTE_ISHEAD = 1<<5
 702 };
 703
 704 enum qpflags {
 705    QP_NONE        = MIMECTE_NONE,
 706    QP_SALLOC      = MIMECTE_SALLOC,
 707    QP_BUF         = MIMECTE_BUF,
 708    QP_ISHEAD      = MIMECTE_ISHEAD
 709 };
 710
 711 enum b64flags {
 712    B64_NONE       = MIMECTE_NONE,
 713    B64_SALLOC     = MIMECTE_SALLOC,
 714    B64_BUF        = MIMECTE_BUF,
 715    B64_CRLF       = MIMECTE_CRLF,
 716    B64_LF         = MIMECTE_LF,
 717    B64_MULTILINE  = MIMECTE_MULTILINE
 718 };
 719
 720 enum oflags {
 721    OF_RDONLY      = 1<<0,
 722    OF_WRONLY      = 1<<1,
 723    OF_RDWR        = 1<<2,
 724    OF_APPEND      = 1<<3,
 725    OF_CREATE      = 1<<4,
 726    OF_TRUNC       = 1<<5,
 727    OF_EXCL        = 1<<6,
 728    OF_CLOEXEC     = 1<<7,
 729    OF_UNLINK      = 1<<8,     /* Only for Ftmp(): unlink(2) after creation */
 730    OF_HOLDSIGS    = 1<<9,     /* Mutual with OF_UNLINK - await Ftmp_free() */
 731    OF_REGISTER    = 1<<10     /* Register file in our file table */
 732 };
 733
 734 enum tdflags {
 735    TD_NONE,                   /* no display conversion */
 736    TD_ISPR        = 1<<0,     /* use isprint() checks */
 737    TD_ICONV       = 1<<1,     /* use iconv() */
 738    TD_DELCTRL     = 1<<2,     /* delete control characters */
 739
 740    /*
 741     * NOTE: _TD_EOF and _TD_BUFCOPY may be ORd with enum conversion and
 742     * enum sendaction, and may thus NOT clash with their bit range!
 743     */
 744    _TD_EOF        = 1<<14,    /* EOF seen, last round! */
 745    _TD_BUFCOPY    = 1<<15     /* Buffer may be constant, copy it */
 746 };
 747
 748 enum protocol {
 749    PROTO_FILE,       /* refers to a local file */
 750    PROTO_POP3,       /* is a pop3 server string */
 751    PROTO_IMAP,       /* is an imap server string */
 752    PROTO_MAILDIR,    /* refers to a maildir folder */
 753    PROTO_UNKNOWN     /* unknown protocol */
 754 };
 755
 756 enum cproto {
 757    CPROTO_SMTP,
 758    CPROTO_POP3,
 759    CPROTO_IMAP
 760 };
 761
 762 enum authtype {
 763    AUTHTYPE_NONE     = 1<<0,
 764    AUTHTYPE_PLAIN    = 1<<1,  /* POP3: APOP is covered by this */
 765    AUTHTYPE_LOGIN    = 1<<2,
 766    AUTHTYPE_CRAM_MD5 = 1<<3,
 767    AUTHTYPE_GSSAPI   = 1<<4
 768 };
 769
 770 #ifdef HAVE_SSL
 771 enum ssl_verify_level {
 772    SSL_VERIFY_IGNORE,
 773    SSL_VERIFY_WARN,
 774    SSL_VERIFY_ASK,
 775    SSL_VERIFY_STRICT
 776 };
 777 #endif
 778
 779 /* A large enum with all the binary and value options a.k.a their keys.
 780  * Only the constant keys are in here, to be looked up via ok_[bv]look(),
 781  * ok_[bv]set() and ok_[bv]clear().
 782  * Note: see the comments in accmacvar.c before changing *anything* in here! */
 783 enum okeys {
 784    /* Option keys for binary options */
 785    ok_b_add_file_recipients,
 786    ok_b_allnet,
 787    ok_b_append,
 788    ok_b_ask,
 789    ok_b_askatend,
 790    ok_b_askattach,
 791    ok_b_askbcc,
 792    ok_b_askcc,
 793    ok_b_asksign,
 794    ok_b_asksub,
 795    ok_b_attachment_ask_content_description,
 796    ok_b_attachment_ask_content_disposition,
 797    ok_b_attachment_ask_content_id,
 798    ok_b_attachment_ask_content_type,
 799    ok_b_autocollapse,
 800    ok_b_autoprint,
 801    ok_b_autothread,
 802    ok_b_bang,
 803    ok_b_batch_exit_on_error,
 804    ok_b_bsdannounce,
 805    ok_b_bsdcompat,
 806    ok_b_bsdflags,
 807    ok_b_bsdheadline,
 808    ok_b_bsdmsgs,
 809    ok_b_bsdorder,
 810    ok_b_bsdset,
 811    ok_b_colour_disable,
 812    ok_b_colour_pager,
 813    ok_b_debug,                         /* {special=1} */
 814    ok_b_disconnected,
 815    ok_b_disposition_notification_send,
 816    ok_b_dot,
 817    ok_b_editalong,
 818    ok_b_editheaders,
 819    ok_b_emptybox,
 820    ok_b_emptystart,
 821    ok_b_flipr,
 822    ok_b_forward_as_attachment,
 823    ok_b_fullnames,
 824    ok_b_header,                        /* {special=1} */
 825    ok_b_history_gabby,
 826    ok_b_history_gabby_persist,
 827    ok_b_hold,
 828    ok_b_idna_disable,
 829    ok_b_ignore,
 830    ok_b_ignoreeof,
 831    ok_b_imap_use_starttls,
 832    ok_b_keep,
 833    ok_b_keep_content_length,
 834    ok_b_keepsave,
 835    ok_b_line_editor_disable,
 836    ok_b_markanswered,
 837    ok_b_message_id_disable,
 838    ok_b_metoo,
 839    ok_b_mime_allow_text_controls,
 840    ok_b_netrc_lookup,
 841    ok_b_outfolder,
 842    ok_b_page,
 843    ok_b_piperaw,
 844    ok_b_pop3_bulk_load,
 845    ok_b_pop3_no_apop,
 846    ok_b_pop3_use_starttls,
 847    ok_b_print_all_chars,
 848    ok_b_print_alternatives,
 849    ok_b_quiet,
 850    ok_b_quote_as_attachment,
 851    ok_b_recipients_in_cc,
 852    ok_b_record_resent,
 853    ok_b_reply_in_same_charset,
 854    ok_b_Replyall,
 855    ok_b_rfc822_body_from_,             /* {name=rfc822-body-from_} */
 856    ok_b_save,
 857    ok_b_searchheaders,
 858    ok_b_sendcharsets_else_ttycharset,
 859    ok_b_sendwait,
 860    ok_b_showlast,
 861    ok_b_showname,
 862    ok_b_showto,
 863    ok_b_skipemptybody,                 /* {special=1} */
 864    ok_b_smime_force_encryption,
 865    ok_b_smime_no_default_ca,
 866    ok_b_smime_sign,
 867    ok_b_smtp_use_starttls,
 868    ok_b_ssl_no_default_ca,
 869    ok_b_ssl_v2_allow,
 870    ok_b_v15_compat,
 871    ok_b_verbose,                       /* {special=1} */
 872    ok_b_writebackedited,
 873
 874    /* Option keys for values options */
 875    ok_v_agent_shell_lookup,
 876    ok_v_attrlist,
 877    ok_v_autobcc,
 878    ok_v_autocc,
 879    ok_v_autosort,
 880    ok_v_charset_7bit,
 881    ok_v_charset_8bit,
 882    ok_v_cmd,
 883    ok_v_colour_from_,                  /* {name=colour-from_} */
 884    ok_v_colour_header,
 885    ok_v_colour_msginfo,
 886    ok_v_colour_partinfo,
 887    ok_v_colour_terms,
 888    ok_v_colour_uheader,
 889    ok_v_colour_user_headers,
 890    ok_v_crt,
 891    ok_v_datefield,
 892    ok_v_datefield_markout_older,
 893    ok_v_DEAD,
 894    ok_v_EDITOR,
 895    ok_v_encoding,
 896    ok_v_escape,
 897    ok_v_folder,                        /* {special=1} */
 898    ok_v_folder_hook,
 899    ok_v_from,
 900    ok_v_fwdheading,
 901    ok_v_headline,
 902    ok_v_headline_bidi,
 903    ok_v_hostname,
 904    ok_v_imap_auth,
 905    ok_v_imap_cache,
 906    ok_v_imap_keepalive,
 907    ok_v_imap_list_depth,
 908    ok_v_indentprefix,
 909    ok_v_line_editor_cursor_right,      /* {special=1} */
 910    ok_v_LISTER,
 911    ok_v_MAIL,
 912    ok_v_MBOX,
 913    ok_v_mime_counter_evidence,
 914    /* TODO v15-compat: mimetypes-load-control -> mimetypes-load / mimetypes */
 915    ok_v_mimetypes_load_control,
 916    ok_v_NAIL_EXTRA_RC,                 /* {name=NAIL_EXTRA_RC} */
 917    /* TODO v15-compat: NAIL_HEAD -> message-head? */
 918    ok_v_NAIL_HEAD,                     /* {name=NAIL_HEAD} */
 919    /* TODO v15-compat: NAIL_HISTFILE -> history-file */
 920    ok_v_NAIL_HISTFILE,                 /* {name=NAIL_HISTFILE} */
 921    /* TODO v15-compat: NAIL_HISTSIZE -> history-size{,limit} */
 922    ok_v_NAIL_HISTSIZE,                 /* {name=NAIL_HISTSIZE} */
 923    /* TODO v15-compat: NAIL_TAIL -> message-tail? */
 924    ok_v_NAIL_TAIL,                     /* {name=NAIL_TAIL} */
 925    ok_v_newfolders,
 926    ok_v_newmail,
 927    ok_v_ORGANIZATION,
 928    ok_v_PAGER,
 929    ok_v_password,
 930    /* TODO pop3_auth is yet a dummy to enable easier impl. of ccred_lookup()! */
 931    ok_v_pop3_auth,
 932    ok_v_pop3_keepalive,
 933    ok_v_prompt,
 934    ok_v_quote,
 935    ok_v_quote_fold,
 936    ok_v_record,
 937    ok_v_reply_strings,
 938    ok_v_replyto,
 939    ok_v_screen,
 940    ok_v_sendcharsets,
 941    ok_v_sender,
 942    ok_v_sendmail,
 943    ok_v_sendmail_arguments,
 944    ok_v_sendmail_progname,
 945    ok_v_SHELL,
 946    ok_v_Sign,
 947    ok_v_sign,
 948    ok_v_signature,
 949    ok_v_smime_ca_dir,
 950    ok_v_smime_ca_file,
 951    ok_v_smime_crl_dir,
 952    ok_v_smime_crl_file,
 953    ok_v_smime_sign_cert,
 954    ok_v_smime_sign_include_certs,
 955    ok_v_smtp,
 956    /* TODO v15-compat: smtp-auth: drop */
 957    ok_v_smtp_auth,
 958    ok_v_smtp_auth_password,
 959    ok_v_smtp_auth_user,
 960    ok_v_smtp_hostname,
 961    ok_v_spam_command,
 962    ok_v_spam_host,
 963    ok_v_spam_maxsize,
 964    ok_v_spam_port,
 965    ok_v_spam_socket,
 966    ok_v_spam_user,
 967    ok_v_ssl_ca_dir,
 968    ok_v_ssl_ca_file,
 969    ok_v_ssl_cert,
 970    ok_v_ssl_cipher_list,
 971    ok_v_ssl_crl_dir,
 972    ok_v_ssl_crl_file,
 973    ok_v_ssl_key,
 974    ok_v_ssl_method,
 975    ok_v_ssl_rand_egd,
 976    ok_v_ssl_rand_file,
 977    ok_v_ssl_verify,
 978    ok_v_stealthmua,
 979    ok_v_toplines,
 980    ok_v_ttycharset,
 981    ok_v_user,
 982    ok_v_VISUAL
 983 };
 984
 985 enum okey_xlook_mode {
 986    OXM_PLAIN      = 1<<0,  /* Plain key always tested */
 987    OXM_H_P        = 1<<1,  /* Check PLAIN-.url_h_p */
 988    OXM_U_H_P      = 1<<2,  /* Check PLAIN-.url_u_h_p */
 989    OXM_ALL        = 0x7
 990 };
 991
 992 /* Locale-independent character classes */
 993 enum {
 994    C_CNTRL        = 0000,
 995    C_BLANK        = 0001,
 996    C_WHITE        = 0002,
 997    C_SPACE        = 0004,
 998    C_PUNCT        = 0010,
 999    C_OCTAL        = 0020,
1000    C_DIGIT        = 0040,
1001    C_UPPER        = 0100,
1002    C_LOWER        = 0200
1003 };
1004
1005 struct str {
1006    char     *s;      /* the string's content */
1007    size_t   l;       /* the stings's length */
1008 };
1009
1010 struct colour_table {
1011    /* Plus a copy of *colour-user-headers* */
1012    struct str  ct_csinfo[COLOURSPEC_RESET+1 + 1];
1013 };
1014
1015 struct bidi_info {
1016    struct str  bi_start;      /* Start of (possibly) bidirectional text */
1017    struct str  bi_end;        /* End of ... */
1018    size_t      bi_pad;        /* No of visual columns to reserve for BIDI pad */
1019 };
1020
1021 struct url {
1022    char const     *url_input;       /* Input as given (really) */
1023    enum cproto    url_cproto;       /* Communication protocol as given */
1024    bool_t         url_needs_tls;    /* Wether the protocol uses SSL/TLS */
1025    bool_t         url_had_user;     /* Wether .url_user was part of the URL */
1026    ui16_t         url_portno;       /* atoi .url_port or default, host endian */
1027    char const     *url_port;        /* Port (if given) or NULL */
1028    char           url_proto[14];    /* Communication protocol as 'xy\0//' */
1029    ui8_t          url_proto_len;    /* Length of .url_proto ('\0' index) */
1030    ui8_t          url_proto_xlen;   /* .. if '\0' is replaced with ':' */
1031    struct str     url_user;         /* User, exactly as given / looked up */
1032    struct str     url_user_enc;     /* User, urlxenc()oded */
1033    struct str     url_pass;         /* Pass (urlxdec()oded) or NULL */
1034    struct str     url_host;         /* Service hostname */
1035    struct str     url_path;         /* CPROTO_IMAP: path suffix or NULL */
1036    /* TODO: url_get_component(url *, enum COMPONENT, str *store) */
1037    struct str     url_h_p;          /* .url_host[:.url_port] */
1038    /* .url_user@.url_host
1039     * Note: for CPROTO_SMTP this may resolve HOST via *smtp-hostname* (->
1040     * *hostname*)!  (And may later be overwritten according to *from*!) */
1041    struct str     url_u_h;
1042    struct str     url_u_h_p;        /* .url_user@.url_host[:.url_port] */
1043    struct str     url_eu_h_p;       /* .url_user_enc@.url_host[:.url_port] */
1044    char const     *url_p_u_h_p;     /* .url_proto://.url_u_h_p */
1045    char const     *url_p_eu_h_p;    /* .url_proto://.url_eu_h_p */
1046    char const     *url_p_eu_h_p_p;  /* .url_proto://.url_eu_h_p[/.url_path] */
1047 };
1048
1049 struct ccred {
1050    enum cproto    cc_cproto;     /* Communication protocol */
1051    enum authtype  cc_authtype;   /* Desired authentication */
1052    char const     *cc_auth;      /* Authentication type as string */
1053    struct str     cc_user;       /* User (urlxdec()oded) or NULL */
1054    struct str     cc_pass;       /* Password (urlxdec()oded) or NULL */
1055 };
1056
1057 struct time_current {
1058    time_t      tc_time;
1059    struct tm   tc_gm;
1060    struct tm   tc_local;
1061    char        tc_ctime[32];
1062 };
1063
1064 struct quoteflt {
1065    FILE        *qf_os;        /* Output stream */
1066    char const  *qf_pfix;
1067    ui32_t      qf_pfix_len;   /* Length of prefix: 0: bypass */
1068    ui32_t      qf_qfold_min;  /* Simple way: wrote prefix? */
1069 #ifdef HAVE_QUOTE_FOLD
1070    ui32_t      qf_qfold_max;  /* Otherwise: line lengths */
1071    ui8_t       qf_state;      /* *quote-fold* state machine */
1072    bool_t      qf_brk_isws;   /* Breakpoint is at WS */
1073    ui8_t       __dummy[2];
1074    ui32_t      qf_wscnt;      /* Whitespace count */
1075    ui32_t      qf_brkl;       /* Breakpoint */
1076    ui32_t      qf_brkw;       /* Visual width, breakpoint */
1077    ui32_t      qf_datw;       /* Current visual output line width */
1078    struct str  qf_dat;        /* Current visual output line */
1079    struct str  qf_currq;      /* Current quote, compressed */
1080    mbstate_t   qf_mbps[2];
1081 #endif
1082 };
1083
1084 struct search_expr {
1085    char const  *ss_where;  /* to search for the expression (not always used) */
1086    char const  *ss_sexpr;  /* String search expression; NULL: use .ss_reexpr */
1087 #ifdef HAVE_REGEX
1088    regex_t     ss_reexpr;
1089 #endif
1090 };
1091
1092 struct eval_ctx {
1093    struct str  ev_line;          /* The terminated data to evaluate */
1094    ui32_t      ev_line_size;     /* May be used to store line memory size */
1095    bool_t      ev_is_recursive;  /* Evaluation in evaluation? (collect ~:) */
1096    ui8_t       __dummy[3];
1097    bool_t      ev_add_history;   /* Enter (final) command in history? */
1098    char const  *ev_new_content;  /* History: reenter line, start with this */
1099 };
1100
1101 struct termios_state {
1102    struct termios ts_tios;
1103    char        *ts_linebuf;
1104    size_t      ts_linesize;
1105    bool_t      ts_needs_reset;
1106 };
1107
1108 #define termios_state_reset() \
1109 do {\
1110    if (termios_state.ts_needs_reset) {\
1111       tcsetattr(0, TCSADRAIN, &termios_state.ts_tios);\
1112       termios_state.ts_needs_reset = FAL0;\
1113    }\
1114 } while (0)
1115
1116 struct sock {                 /* data associated with a socket */
1117    int         s_fd;          /* file descriptor */
1118 #ifdef HAVE_SSL
1119    int         s_use_ssl;     /* SSL is used */
1120 # ifdef HAVE_OPENSSL
1121    void        *s_ssl;        /* SSL object */
1122    void        *s_ctx;        /* SSL context object */
1123 # endif
1124 #endif
1125    char        *s_wbuf;       /* for buffered writes */
1126    int         s_wbufsize;    /* allocated size of s_buf */
1127    int         s_wbufpos;     /* position of first empty data byte */
1128    char        *s_rbufptr;    /* read pointer to s_rbuf */
1129    int         s_rsz;         /* size of last read in s_rbuf */
1130    char const  *s_desc;       /* description of error messages */
1131    void        (*s_onclose)(void);     /* execute on close */
1132    char        s_rbuf[LINESIZE + 1];   /* for buffered reads */
1133 };
1134
1135 struct sockconn {
1136    struct url     sc_url;
1137    struct ccred   sc_cred;
1138    struct sock    sc_sock;
1139 };
1140
1141 struct mailbox {
1142    enum {
1143       MB_NONE     = 000,      /* no reply expected */
1144       MB_COMD     = 001,      /* command reply expected */
1145       MB_MULT     = 002,      /* multiline reply expected */
1146       MB_PREAUTH  = 004,      /* not in authenticated state */
1147       MB_BYE      = 010       /* may accept a BYE state */
1148    }           mb_active;
1149    FILE        *mb_itf;       /* temp file with messages, read open */
1150    FILE        *mb_otf;       /* same, write open */
1151    char        *mb_sorted;    /* sort method */
1152    enum {
1153       MB_VOID,       /* no type (e. g. connection failed) */
1154       MB_FILE,       /* local file */
1155       MB_POP3,       /* POP3 mailbox */
1156       MB_IMAP,       /* IMAP mailbox */
1157       MB_MAILDIR,    /* maildir folder */
1158       MB_CACHE       /* cached mailbox */
1159    }           mb_type;       /* type of mailbox */
1160    enum {
1161       MB_DELE = 01,  /* may delete messages in mailbox */
1162       MB_EDIT = 02   /* may edit messages in mailbox */
1163    }           mb_perm;
1164    int mb_compressed;         /* is a compressed mbox file */
1165    int mb_threaded;           /* mailbox has been threaded */
1166 #ifdef HAVE_IMAP
1167    enum mbflags {
1168       MB_NOFLAGS  = 000,
1169       MB_UIDPLUS  = 001 /* supports IMAP UIDPLUS */
1170    }           mb_flags;
1171    unsigned long  mb_uidvalidity;   /* IMAP unique identifier validity */
1172    char        *mb_imap_account;    /* name of current IMAP account */
1173    char        *mb_imap_pass;       /* xxx v15-compat URL workaround */
1174    char        *mb_imap_mailbox;    /* name of current IMAP mailbox */
1175    char        *mb_cache_directory; /* name of cache directory */
1176 #endif
1177    struct sock mb_sock;       /* socket structure */
1178 };
1179
1180 enum needspec {
1181    NEED_UNSPEC,      /* unspecified need, don't fetch */
1182    NEED_HEADER,      /* need the header of a message */
1183    NEED_BODY         /* need header and body of a message */
1184 };
1185
1186 enum havespec {
1187    HAVE_NOTHING,              /* nothing downloaded yet */
1188    HAVE_HEADER    = 01,       /* header is downloaded */
1189    HAVE_BODY      = 02        /* entire message is downloaded */
1190 };
1191
1192 /* flag bits. Attention: Flags that are used in cache.c may not change */
1193 enum mflag {
1194    MUSED          = (1<< 0),  /* entry is used, but this bit isn't */
1195    MDELETED       = (1<< 1),  /* entry has been deleted */
1196    MSAVED         = (1<< 2),  /* entry has been saved */
1197    MTOUCH         = (1<< 3),  /* entry has been noticed */
1198    MPRESERVE      = (1<< 4),  /* keep entry in sys mailbox */
1199    MMARK          = (1<< 5),  /* message is marked! */
1200    MODIFY         = (1<< 6),  /* message has been modified */
1201    MNEW           = (1<< 7),  /* message has never been seen */
1202    MREAD          = (1<< 8),  /* message has been read sometime. */
1203    MSTATUS        = (1<< 9),  /* message status has changed */
1204    MBOX           = (1<<10),  /* Send this to mbox, regardless */
1205    MNOFROM        = (1<<11),  /* no From line */
1206    MHIDDEN        = (1<<12),  /* message is hidden to user */
1207    MFULLYCACHED   = (1<<13),  /* message is completely cached */
1208    MBOXED         = (1<<14),  /* message has been sent to mbox */
1209    MUNLINKED      = (1<<15),  /* message was unlinked from cache */
1210    MNEWEST        = (1<<16),  /* message is very new (newmail) */
1211    MFLAG          = (1<<17),  /* message has been flagged recently */
1212    MUNFLAG        = (1<<18),  /* message has been unflagged */
1213    MFLAGGED       = (1<<19),  /* message is `flagged' */
1214    MANSWER        = (1<<20),  /* message has been answered recently */
1215    MUNANSWER      = (1<<21),  /* message has been unanswered */
1216    MANSWERED      = (1<<22),  /* message is `answered' */
1217    MDRAFT         = (1<<23),  /* message has been drafted recently */
1218    MUNDRAFT       = (1<<24),  /* message has been undrafted */
1219    MDRAFTED       = (1<<25),  /* message is marked as `draft' */
1220    MOLDMARK       = (1<<26),  /* messages was marked previously */
1221    MSPAM          = (1<<27)   /* message is classified as spam */
1222 };
1223 #define MMNORM          (MDELETED | MSAVED | MHIDDEN)
1224 #define MMNDEL          (MDELETED | MHIDDEN)
1225
1226 #define visible(mp)     (((mp)->m_flag & MMNDEL) == 0)
1227
1228 struct mimepart {
1229    enum mflag  m_flag;        /* flags */
1230    enum havespec m_have;      /* downloaded parts of the part */
1231 #ifdef HAVE_SPAM
1232    ui32_t      m_spamscore;   /* Spam score as int, 24:8 bits */
1233 #endif
1234    int         m_block;       /* block number of this part */
1235    size_t      m_offset;      /* offset in block of part */
1236    size_t      m_size;        /* Bytes in the part */
1237    size_t      m_xsize;       /* Bytes in the full part */
1238    long        m_lines;       /* Lines in the message */
1239    long        m_xlines;      /* Lines in the full message */
1240    time_t      m_time;        /* time the message was sent */
1241    char const  *m_from;       /* message sender */
1242    struct mimepart *m_nextpart;     /* next part at same level */
1243    struct mimepart *m_multipart;    /* parts of multipart */
1244    struct mimepart *m_parent;       /* enclosing multipart part */
1245    char        *m_ct_type;          /* content-type */
1246    char        *m_ct_type_plain;    /* content-type without specs */
1247    char        *m_ct_type_usr_ovwr; /* Forcefully overwritten one */
1248    enum mimecontent m_mimecontent;  /* same in enum */
1249    char const  *m_charset;    /* charset */
1250    char        *m_ct_transfer_enc;  /* content-transfer-encoding */
1251    enum mimeenc m_mimeenc;     /* same in enum */
1252    char        *m_partstring; /* part level string */
1253    char        *m_filename;   /* attachment filename */
1254 };
1255
1256 struct message {
1257    enum mflag  m_flag;        /* flags */
1258    enum havespec m_have;      /* downloaded parts of the message */
1259 #ifdef HAVE_SPAM
1260    ui32_t      m_spamscore;   /* Spam score as int, 24:8 bits */
1261 #endif
1262    int         m_block;       /* block number of this message */
1263    size_t      m_offset;      /* offset in block of message */
1264    size_t      m_size;        /* Bytes in the message */
1265    size_t      m_xsize;       /* Bytes in the full message */
1266    long        m_lines;       /* Lines in the message */
1267    long        m_xlines;      /* Lines in the full message */
1268    time_t      m_time;        /* time the message was sent */
1269    time_t      m_date;        /* time in the 'Date' field */
1270    unsigned    m_idhash;      /* hash on Message-ID for threads */
1271    struct message *m_child;   /* first child of this message */
1272    struct message *m_younger; /* younger brother of this message */
1273    struct message *m_elder;   /* elder brother of this message */
1274    struct message *m_parent;  /* parent of this message */
1275    unsigned    m_level;       /* thread level of message */
1276    long        m_threadpos;   /* position in threaded display */
1277 #ifdef HAVE_IMAP
1278    unsigned long m_uid;       /* IMAP unique identifier */
1279 #endif
1280    char        *m_maildir_file;  /* original maildir file of msg */
1281    ui32_t      m_maildir_hash;   /* hash of file name in maildir sub */
1282    int         m_collapsed;      /* collapsed thread information */
1283 };
1284
1285 /* Given a file address, determine the block number it represents */
1286 #define mailx_blockof(off)                ((int) ((off) / 4096))
1287 #define mailx_offsetof(off)               ((int) ((off) % 4096))
1288 #define mailx_positionof(block, offset)   ((off_t)(block) * 4096 + (offset))
1289
1290 /* Argument types */
1291 enum argtype {
1292    ARG_MSGLIST    = 0,        /* Message list type */
1293    ARG_STRLIST    = 1,        /* A pure string */
1294    ARG_RAWLIST    = 2,        /* Shell string list */
1295    ARG_NOLIST     = 3,        /* Just plain 0 */
1296    ARG_NDMLIST    = 4,        /* Message list, no defaults */
1297    ARG_ECHOLIST   = 5,        /* Like raw list, but keep quote chars */
1298    ARG_ARGMASK    = 7,        /* Mask of the above */
1299
1300    ARG_A          = 1u<< 4,   /* Needs an active mailbox */
1301    ARG_F          = 1u<< 5,   /* Is a conditional command */
1302    ARG_H          = 1u<< 6,   /* Never place in history */
1303    ARG_I          = 1u<< 7,   /* Interactive command bit */
1304    ARG_M          = 1u<< 8,   /* Legal from send mode bit */
1305    ARG_P          = 1u<< 9,   /* Autoprint dot after command */
1306    ARG_R          = 1u<<10,   /* Cannot be called from collect / recursion */
1307    ARG_T          = 1u<<11,   /* Is a transparent command */
1308    ARG_V          = 1u<<12,   /* Places data in temporary_arg_v_store */
1309    ARG_W          = 1u<<13    /* Invalid when read only bit */
1310 };
1311
1312 enum gfield {
1313    GTO            = 1,        /* Grab To: line */
1314    GSUBJECT       = 2,        /* Likewise, Subject: line */
1315    GCC            = 4,        /* And the Cc: line */
1316    GBCC           = 8,        /* And also the Bcc: line */
1317
1318    GNL            = 16,       /* Print blank line after */
1319    GDEL           = 32,       /* Entity removed from list */
1320    GCOMMA         = 64,       /* detract puts in commas */
1321    GUA            = 128,      /* User-Agent field */
1322    GMIME          = 256,      /* MIME 1.0 fields */
1323    GMSGID         = 512,      /* a Message-ID */
1324    /* 1024 */
1325    GIDENT         = 2048,     /* From:, Reply-To: and Organization: field */
1326    GREF           = 4096,     /* References: field */
1327    GDATE          = 8192,     /* Date: field */
1328    GFULL          = 16384,    /* include full names */
1329    GSKIN          = 32768,    /* skin names */
1330    GEXTRA         = 65536,    /* extra fields */
1331    GFILES         = 131072    /* include filename addresses */
1332 };
1333 #define GMASK           (GTO | GSUBJECT | GCC | GBCC)
1334
1335 /* Structure used to pass about the current state of a message (header) */
1336 struct header {
1337    struct name *h_to;         /* Dynamic "To:" string */
1338    char        *h_subject;    /* Subject string */
1339    struct name *h_cc;         /* Carbon copies string */
1340    struct name *h_bcc;        /* Blind carbon copies */
1341    struct name *h_ref;        /* References */
1342    struct attachment *h_attach; /* MIME attachments */
1343    char        *h_charset;    /* preferred charset */
1344    struct name *h_from;       /* overridden "From:" field */
1345    struct name *h_replyto;    /* overridden "Reply-To:" field */
1346    struct name *h_sender;     /* overridden "Sender:" field */
1347    char        *h_organization; /* overridden "Organization:" field */
1348 };
1349
1350 /* Handling of namelist nodes used in processing the recipients of mail and
1351  * aliases, inspection of mail-addresses and all that kind of stuff */
1352 enum nameflags {
1353    NAME_NAME_SALLOC        = 1<< 0, /* .n_name is doped */
1354    NAME_FULLNAME_SALLOC    = 1<< 1, /* .n_fullname is doped */
1355    NAME_SKINNED            = 1<< 2, /* Is actually skin()ned */
1356    NAME_IDNA               = 1<< 3, /* IDNA was applied */
1357    NAME_ADDRSPEC_CHECKED   = 1<< 4, /* Address has been .. and */
1358    NAME_ADDRSPEC_ISFILE    = 1<< 5, /* ..is a file path */
1359    NAME_ADDRSPEC_ISPIPE    = 1<< 6, /* ..is a command for piping */
1360    NAME_ADDRSPEC_ISFILEORPIPE = NAME_ADDRSPEC_ISFILE | NAME_ADDRSPEC_ISPIPE,
1361    NAME_ADDRSPEC_ERR_EMPTY = 1<< 7, /* An empty string (or NULL) */
1362    NAME_ADDRSPEC_ERR_ATSEQ = 1<< 8, /* Weird @ sequence */
1363    NAME_ADDRSPEC_ERR_CHAR  = 1<< 9, /* Invalid character */
1364    NAME_ADDRSPEC_ERR_IDNA  = 1<<10, /* IDNA convertion failed */
1365    NAME_ADDRSPEC_INVALID   = NAME_ADDRSPEC_ERR_EMPTY |
1366          NAME_ADDRSPEC_ERR_ATSEQ | NAME_ADDRSPEC_ERR_CHAR |
1367          NAME_ADDRSPEC_ERR_IDNA,
1368
1369    _NAME_SHIFTWC  = 11,
1370    _NAME_MAXWC    = 0xFFFFF,
1371    _NAME_MASKWC   = _NAME_MAXWC << _NAME_SHIFTWC
1372 };
1373
1374 /* In the !_ERR_EMPTY case, the failing character can be queried */
1375 #define NAME_ADDRSPEC_ERR_GETWC(F)  \
1376    ((((unsigned int)(F) & _NAME_MASKWC) >> _NAME_SHIFTWC) & _NAME_MAXWC)
1377 #define NAME_ADDRSPEC_ERR_SET(F, E, WC) \
1378 do {\
1379    (F) = ((F) & ~(NAME_ADDRSPEC_INVALID | _NAME_MASKWC)) |\
1380          (E) | (((unsigned int)(WC) & _NAME_MAXWC) << _NAME_SHIFTWC);\
1381 } while (0)
1382
1383 struct name {
1384    struct name *n_flink;      /* Forward link in list. */
1385    struct name *n_blink;      /* Backward list link */
1386    enum gfield n_type;        /* From which list it came */
1387    enum nameflags n_flags;    /* enum nameflags */
1388    char        *n_name;       /* This fella's name */
1389    char        *n_fullname;   /* Sometimes, name including comment */
1390 };
1391
1392 struct addrguts {
1393    char const  *ag_input;     /* Input string as given */
1394    size_t      ag_ilen;       /* strlen() of input */
1395    size_t      ag_iaddr_start; /* Start of *addr-spec* in .ag_input */
1396    size_t      ag_iaddr_aend; /* ..and one past its end */
1397    char        *ag_skinned;   /* Output (alloced if !=.ag_input) */
1398    size_t      ag_slen;       /* strlen() of .ag_skinned */
1399    size_t      ag_sdom_start; /* Start of domain in .ag_skinned, */
1400    enum nameflags ag_n_flags; /* enum nameflags of .ag_skinned */
1401 };
1402
1403 /* MIME attachments */
1404 enum attach_conv {
1405    AC_DEFAULT,       /* _get_lc() -> _iter_*() */
1406    AC_FIX_OUTCS,     /* _get_lc() -> "charset=" .a_charset */
1407    AC_FIX_INCS,      /* "charset=".a_input_charset (nocnv) */
1408    AC_TMPFILE        /* attachment.a_tmpf is converted */
1409 };
1410
1411 struct attachment {
1412    struct attachment *a_flink;   /* Forward link in list. */
1413    struct attachment *a_blink;   /* Backward list link */
1414    char const  *a_name;       /* file name */
1415    char const  *a_content_type;  /* content type */
1416    char const  *a_content_disposition; /* content disposition */
1417    char const  *a_content_id; /* content id */
1418    char const  *a_content_description; /* content description */
1419    char const  *a_input_charset; /* Interpretation depends on .a_conv */
1420    char const  *a_charset;    /* ... */
1421    FILE        *a_tmpf;       /* If AC_TMPFILE */
1422    enum attach_conv a_conv;   /* User chosen conversion */
1423    int         a_msgno;       /* message number */
1424 };
1425
1426 struct sendbundle {
1427    struct header  *sb_hp;
1428    struct name    *sb_to;
1429    FILE           *sb_input;
1430    struct str     sb_signer;  /* USER@HOST for signing+ */
1431    struct url     sb_url;
1432    struct ccred   sb_ccred;
1433 };
1434
1435 struct group {
1436    struct group *ge_link;     /* Next person in this group */
1437    char        *ge_name;      /* This person's user name */
1438 };
1439
1440 struct grouphead {
1441    struct grouphead *g_link;  /* Next grouphead in list */
1442    char        *g_name;       /* Name of this group */
1443    struct group *g_list;      /* Users in group. */
1444 };
1445
1446 /* Structure of the hash table of ignored header fields */
1447 struct ignoretab {
1448    int         i_count;       /* Number of entries */
1449    struct ignore {
1450       struct ignore  *i_link;    /* Next ignored field in bucket */
1451       char           *i_field;   /* This ignored field */
1452    }           *i_head[HSHSIZE];
1453 };
1454
1455 /* For the 'shortcut' and 'unshortcut' functionality */
1456 struct shortcut {
1457    struct shortcut *sh_next;  /* next shortcut in list */
1458    char        *sh_short;     /* shortcut string */
1459    char        *sh_long;      /* expanded form */
1460 };
1461
1462 /* For saving the current directory and later returning */
1463 struct cw {
1464 #ifdef HAVE_FCHDIR
1465    int         cw_fd;
1466 #else
1467    char        cw_wd[PATH_MAX];
1468 #endif
1469 };
1470
1471 /*
1472  * Global variable declarations
1473  *
1474  * These become instantiated in main.c.
1475  */
1476
1477 #undef VL
1478 #ifdef _MAIN_SOURCE
1479 # ifndef HAVE_AMALGAMATION
1480 #  define VL
1481 # else
1482 #  define VL            static
1483 # endif
1484 #else
1485 # define VL             extern
1486 #endif
1487
1488 VL gid_t       effectivegid;        /* Saved from when we started up */
1489 VL gid_t       realgid;             /* Saved from when we started up */
1490
1491 VL int         mb_cur_max;          /* Value of MB_CUR_MAX */
1492 VL int         realscreenheight;    /* The real screen height */
1493 VL int         scrnwidth;           /* Screen width, or best guess */
1494 VL int         scrnheight;          /* Screen height/guess (4 header) */
1495 VL int         enc_has_state;       /* Encoding has shift states */
1496
1497 VL char        **altnames;          /* List of alternate names of user */
1498 VL char const  *homedir;            /* Path name of home directory */
1499 VL char const  *myname;             /* My login name */
1500 VL char const  *progname;           /* Our name */
1501 VL char const  *tempdir;            /* The temporary directory */
1502
1503 VL int         exit_status;         /* Exit status */
1504 VL int         options;             /* Bits of enum user_options */
1505 VL char        *option_r_arg;       /* Argument to -r option */
1506 VL char const  **smopts;            /* sendmail(1) opts from commline */
1507 VL size_t      smopts_count;        /* Entries in smopts */
1508
1509 /* TODO Join as many of these state machine bits into a single carrier! */
1510 VL int         inhook;              /* Currently executing a hook */
1511 VL bool_t      exec_last_comm_error; /* Last execute() command failed */
1512 VL bool_t      edit;                /* Indicates editing a file */
1513 VL bool_t      did_print_dot;       /* Current message has been printed */
1514 VL bool_t      list_saw_numbers;    /* Last *LIST saw numerics */
1515 VL bool_t      msglist_is_single;   /* Last NDMLIST/MSGLIST chose 1 msg */
1516 VL bool_t      loading;             /* Loading user definitions */
1517 VL bool_t      sourcing;            /* Currently reading variant file */
1518 VL bool_t      sawcom;              /* Set after first command */
1519 VL bool_t      starting;            /* Still in startup code */
1520 VL bool_t      var_clear_allow_undefined; /* v?ok_[bv]clear(): no complain */
1521 VL int         noreset;             /* String resets suspended */
1522
1523 /* XXX stylish sorting */
1524 VL int            msgCount;            /* Count of messages read in */
1525 VL struct mailbox mb;                  /* Current mailbox */
1526 VL int            image;               /* File descriptor for msg image */
1527 VL char           mailname[PATH_MAX];  /* Name of current file TODO URL/object*/
1528 VL char           displayname[80 - 40]; /* Prettyfied for display TODO URL/obj*/
1529 VL char           prevfile[PATH_MAX];  /* Name of previous file TODO URL/obj */
1530 VL char const     *account_name;       /* Current account name or NULL */
1531 VL off_t          mailsize;            /* Size of system mailbox */
1532 VL struct message *dot;                /* Pointer to current message */
1533 VL struct message *prevdot;            /* Previous current message */
1534 VL struct message *message;            /* The actual message structure */
1535 VL struct message *threadroot;         /* first threaded message */
1536 VL int            imap_created_mailbox; /* hack to get feedback from imap */
1537
1538 VL struct grouphead  *groups[HSHSIZE]; /* Pointer to active groups */
1539 VL struct ignoretab  ignore[2];        /* ignored and retained fields
1540                                         * 0 is ignore, 1 is retain */
1541 VL struct ignoretab  saveignore[2];    /* ignored and retained fields
1542                                         * on save to folder */
1543 VL struct ignoretab  allignore[2];     /* special, ignore all headers */
1544 VL struct ignoretab  fwdignore[2];     /* fields to ignore for forwarding */
1545 VL struct shortcut   *shortcuts;       /* list of shortcuts */
1546
1547 VL struct time_current  time_current;  /* time(3); send: mail1() XXXcarrier */
1548 VL struct termios_state termios_state; /* getpassword(); see commands().. */
1549
1550 #ifdef HAVE_COLOUR
1551 VL struct colour_table  *colour_table;
1552 #endif
1553
1554 #ifdef HAVE_SSL
1555 VL enum ssl_verify_level   ssl_verify_level; /* SSL verification level */
1556 #endif
1557
1558 #ifdef HAVE_ICONV
1559 VL iconv_t     iconvd;
1560 #endif
1561
1562 VL sigjmp_buf  srbuf;
1563 VL int         interrupts;
1564 VL sighandler_type dflpipe;
1565 VL sighandler_type handlerstacktop;
1566 #define handlerpush(f)  (savedtop = handlerstacktop, handlerstacktop = (f))
1567 #define handlerpop()    (handlerstacktop = savedtop)
1568
1569 /* TODO Temporary hacks unless the codebase doesn't jump and uses pass-by-value
1570  * TODO carrier structs instead of locals */
1571 VL char        *temporary_arg_v_store;
1572 VL void        *temporary_localopts_store;
1573 /* TODO temporary storage to overcome which_protocol() mess (for PROTO_FILE) */
1574 VL char const  *temporary_protocol_ext;
1575
1576 /* The remaining variables need initialization */
1577
1578 #ifndef HAVE_AMALGAMATION
1579 VL char const  month_names[12 + 1][4];
1580 VL char const  weekday_names[7 + 1][4];
1581
1582 VL char const  uagent[];            /* User agent */
1583 VL char const  version[];           /* The version string */
1584 VL char const  features[];          /* The "feature string" */
1585
1586 VL uc_it const class_char[];
1587 #endif
1588
1589 /*
1590  * Finally, let's include the function prototypes XXX embed
1591  */
1592
1593 #include "nailfuns.h"
1594
1595 /* s-it-mode */