| 1 | /*$Id: ezmlm-cgi.c,v 1.17 1999/12/24 04:21:26 lindberg Exp $*/ |
| 2 | /*$Name: ezmlm-idx-040 $*/ |
| 3 | |
| 4 | /* Please leave. Will hopefully help pay for further improvement. */ |
| 5 | #define EZ_CRIGHT "<a href=\"http://www.lindeinc.com\">(c) 1999 Lin-De, Inc</a>" |
| 6 | /******/ |
| 7 | #include <sys/types.h> |
| 8 | #include "direntry.h" |
| 9 | #include "datetime.h" |
| 10 | #include "now.h" |
| 11 | #include "stralloc.h" |
| 12 | #include "strerr.h" |
| 13 | #include "error.h" |
| 14 | #include "env.h" |
| 15 | #include "sig.h" |
| 16 | #include "open.h" |
| 17 | #include "getln.h" |
| 18 | #include "case.h" |
| 19 | #include "scan.h" |
| 20 | #include "str.h" |
| 21 | #include "fmt.h" |
| 22 | #include "readwrite.h" |
| 23 | #include "fork.h" |
| 24 | #include "wait.h" |
| 25 | #include "exit.h" |
| 26 | #include "substdio.h" |
| 27 | #include "getconf.h" |
| 28 | #include "gen_alloc.h" |
| 29 | #include "gen_allocdefs.h" |
| 30 | #include "constmap.h" |
| 31 | #include "byte.h" |
| 32 | #include "subscribe.h" |
| 33 | #include "errtxt.h" |
| 34 | #include "makehash.h" |
| 35 | #include "mime.h" |
| 36 | #include "idx.h" |
| 37 | #include "yyyymm.h" |
| 38 | |
| 39 | #define FATAL "ezmlm-cgi: fatal: " |
| 40 | #define GET "-getv" |
| 41 | #define THREAD "-threadv" |
| 42 | #define SUBSCRIBE "-subscribe" |
| 43 | #define FAQ "-faq" |
| 44 | #define TXT_CGI_SUBSCRIBE "\">[eSubscribe]</a>\n" |
| 45 | #define TXT_CGI_FAQ "\">[eFAQ]</a>\n" |
| 46 | |
| 47 | int flagshowhtml = 1; /* show text/html parts. This leads to duplication */ |
| 48 | /* when both text/plain and text/html are in a */ |
| 49 | /* multipart/alternative message, but it is assumed*/ |
| 50 | /* that text/html is not frivolous, but only used */ |
| 51 | /* when the formatting is important. */ |
| 52 | int flagobscure = 0; /* Don't remove Sender's E-mail address in message */ |
| 53 | /* view. Overridden by config file (- before list */ |
| 54 | /* name). */ |
| 55 | |
| 56 | /**************** Header processing ***********************/ |
| 57 | char headers_used[] = "Subject\\From\\Date\\content-type\\" |
| 58 | "content-transfer-encoding\\mime-version"; |
| 59 | /* index of headers displayed (shown in order listed above) */ |
| 60 | int headers_shown[] = {1,1,1,0,0,0}; |
| 61 | /* index of specific headers */ |
| 62 | #define NO_HDRS 6 |
| 63 | #define HDR_SUBJECT 1 |
| 64 | #define HDR_FROM 2 |
| 65 | #define HDR_CT 4 |
| 66 | #define HDR_CTENC 5 |
| 67 | #define HDR_VERSION 6 |
| 68 | |
| 69 | /* Need to add inits if you increase NO_HDRS */ |
| 70 | stralloc hdr[NO_HDRS] = { {0},{0},{0},{0},{0},{0} }; |
| 71 | /**************** Header processing ***********************/ |
| 72 | |
| 73 | |
| 74 | /* index of subject in above, first = 1 */ |
| 75 | |
| 76 | /* TODO: Sort headers before display. Find a way to display the body with the*/ |
| 77 | /* correct charset, ideally letting the browser do the work (should really */ |
| 78 | /* be able to specify charset for DIV ! */ |
| 79 | |
| 80 | /* ulong at least 32 bits. (Creating a Year 0xffffff problem ;-) */ |
| 81 | #define MAXULONG 0xffffffff |
| 82 | |
| 83 | char cmdstr[5] = "xxx:"; |
| 84 | #define ITEM "-msadiz" |
| 85 | #define ITEM_MESSAGE 1 |
| 86 | #define ITEM_SUBJECT 2 |
| 87 | #define ITEM_AUTHOR 3 |
| 88 | #define ITEM_DATE 4 |
| 89 | #define ITEM_INDEX 5 |
| 90 | |
| 91 | #define DIRECT "psnpn" |
| 92 | #define DIRECT_SAME 0 |
| 93 | #define DIRECT_NEXT 1 |
| 94 | #define DIRECT_PREV -1 |
| 95 | /* use only as the argument for some functions. Terrible hack for date links */ |
| 96 | #define DIRECT_FIRST 3 |
| 97 | #define DIRECT_LAST 2 |
| 98 | |
| 99 | char *dir = 0; |
| 100 | char *local = 0; |
| 101 | char *host = 0; |
| 102 | char *home = 0; |
| 103 | char *banner = 0; |
| 104 | char *charset = 0; |
| 105 | char *stylesheet = 0; |
| 106 | char *cmd; |
| 107 | char strnum[FMT_ULONG]; |
| 108 | /* these are the only headers we really care about for message display */ |
| 109 | /* one can always retrieve the complete message by E-mail */ |
| 110 | stralloc charg = {0}; |
| 111 | stralloc url = {0}; |
| 112 | stralloc author = {0}; |
| 113 | stralloc subject = {0}; |
| 114 | stralloc base = {0}; |
| 115 | stralloc line = {0}; |
| 116 | stralloc decline = {0}; /* for rfc2047-decoded headers and QP/base64 */ |
| 117 | stralloc cfline = {0}; /* from config file */ |
| 118 | stralloc fn = {0}; |
| 119 | stralloc dtline = {0}; |
| 120 | stralloc headers = {0}; |
| 121 | stralloc encoding = {0}; |
| 122 | stralloc content = {0}; |
| 123 | stralloc charsetbase = {0}; |
| 124 | stralloc curcharset = {0}; |
| 125 | stralloc sainit = {0}; |
| 126 | struct constmap headermap; |
| 127 | unsigned long uid,euid; |
| 128 | int recursion_level; |
| 129 | int so = 0; |
| 130 | int ss23 = 0; |
| 131 | int state = 0; |
| 132 | int newlevel; |
| 133 | int match; /* used everywhere and no overlap */ |
| 134 | int fd; /* same; never >1 open */ |
| 135 | int cache; /* 0 = don't; 1 = don't know; 2 = do */ |
| 136 | int child,wstat; |
| 137 | int flagtoplevel; |
| 138 | unsigned int flagmime; |
| 139 | unsigned int cs,csbase; |
| 140 | int flagrobot; |
| 141 | int flagpre; |
| 142 | int precharcount; |
| 143 | char cn1 = 0; |
| 144 | char cn2 = 0; |
| 145 | char lastjp[] = "B"; /* to get back to the correct JP after line break */ |
| 146 | char *bannerargs[4]; |
| 147 | |
| 148 | |
| 149 | mime_info *mime_current = 0; |
| 150 | mime_info *mime_tmp = 0; |
| 151 | |
| 152 | datetime_sec when; |
| 153 | struct datetime dt; |
| 154 | |
| 155 | char inbuf[4096]; |
| 156 | substdio ssin; |
| 157 | |
| 158 | void die_nomem() { strerr_die2x(111,FATAL,ERR_NOMEM); } |
| 159 | |
| 160 | void die_syntax(char *s) |
| 161 | { |
| 162 | strerr_die4x(100,FATAL,ERR_SYNTAX,"config file: ",s); |
| 163 | } |
| 164 | |
| 165 | char outbuf[4096]; |
| 166 | substdio ssout = SUBSTDIO_FDBUF(write,1,outbuf,sizeof(outbuf)); |
| 167 | |
| 168 | void oput(register char *s, register unsigned int l) |
| 169 | /* unbuffered. Avoid extra copy as httpd buffers */ |
| 170 | { |
| 171 | if (substdio_put(&ssout,s,l) == -1) |
| 172 | strerr_die3sys(111,FATAL,ERR_WRITE,"stdout: "); |
| 173 | } |
| 174 | |
| 175 | void oputs(register char *s) |
| 176 | { |
| 177 | oput(s,str_len(s)); |
| 178 | } |
| 179 | |
| 180 | /* this error is for things that happen only if program logic is screwed up */ |
| 181 | void die_prog(char *s) { strerr_die5x(100,FATAL,"program error (please send bug report to bugs@ezmlm.org): ",s," Command: ",cmd); } |
| 182 | |
| 183 | /* If we already issued a header than this will look ugly */ |
| 184 | void cgierr(char *s,char *s1,char *s2) |
| 185 | { |
| 186 | strerr_warn4(FATAL,s,s1,s2,(struct strerr *)0); |
| 187 | oputs("Content-type: text/plain\n"); |
| 188 | oputs("Status: 500 Couldn't do it\n\n"); |
| 189 | oputs("I tried my best, but:\n\n"); |
| 190 | if (s) oputs(s); |
| 191 | if (s1) oputs(s1); |
| 192 | if (s2) oputs(s2); |
| 193 | oputs("\n"); |
| 194 | substdio_flush(&ssout); |
| 195 | _exit(0); |
| 196 | } |
| 197 | |
| 198 | unsigned long msgnav[5]; /* 0 prev prev 1 prev 2 this 3 next 4 next-next */ |
| 199 | |
| 200 | struct msginfo { /* clean info on the target message */ |
| 201 | char item; /* What we want */ |
| 202 | char direction; /* Relation to current msg */ |
| 203 | char axis; /* Axis of desired movement [may be calculated] */ |
| 204 | unsigned long source; /* reference message number */ |
| 205 | unsigned long target; |
| 206 | unsigned long date; |
| 207 | unsigned long *authnav; /* msgnav structure */ |
| 208 | unsigned long *subjnav; /* msgnav structure */ |
| 209 | char *author; |
| 210 | char *subject; |
| 211 | char *cgiarg; /* sub/auth as expected from axis */ |
| 212 | } msginfo; |
| 213 | |
| 214 | void toggle_flagpre(int flag) |
| 215 | { |
| 216 | flagpre = flag; |
| 217 | precharcount = 0; |
| 218 | cn1 = 0; cn2 = 0; /* just in case */ |
| 219 | } |
| 220 | |
| 221 | unsigned int decode_charset(register char *s, register unsigned int l) |
| 222 | /* return charset code. CS_BAD means that base charset should be used, i.e. */ |
| 223 | /* that charset is empty or likely invalid. CS_NONE are charsets for which */ |
| 224 | /* we don't need to do anything special. */ |
| 225 | { |
| 226 | unsigned int r; |
| 227 | |
| 228 | if (case_startb(s,l,"iso-8859") || case_startb(s,l,"us-ascii") || |
| 229 | case_startb(s,l,"utf")) /* at the moment, we can do utf-8 right */ |
| 230 | return CS_NONE; /* what is utf-7 (used by OE)? */ |
| 231 | if (case_startb(s,l,"x-cp") || |
| 232 | case_startb(s,l,"cp") || |
| 233 | case_startb(s,l,"x-mac") || |
| 234 | case_startb(s,l,"koi8")) return CS_NONE; |
| 235 | if (!l || *s == 'x' || *s == 'X') return CS_BAD; |
| 236 | if (case_startb(s,l,"iso-2022")) { |
| 237 | if (case_startb(s+8,l-8,"-cn")) |
| 238 | return CS_2022_CN; |
| 239 | if (case_startb(s+8,l-8,"-jp")) |
| 240 | return CS_2022_JP; |
| 241 | return CS_2022_KR; |
| 242 | } |
| 243 | if (case_startb(s,l,"cn-") || |
| 244 | case_startb(s,l,"hz-gb") || |
| 245 | case_startb(s,l,"gb") || |
| 246 | case_startb(s,l,"big5")) |
| 247 | return CS_CN; /* Only consideration for linebreak */ |
| 248 | if (case_startb(s,l,"iso_8859") || |
| 249 | case_startb(s,l,"latin") || |
| 250 | case_startb(s,l,"windows")) return CS_NONE; |
| 251 | /* Add other charsets here. Later we will add code to replace a detected */ |
| 252 | /* charset name with another, and to connect conversion routines, such as */ |
| 253 | /* between windows-1251/koi-8r/iso-8859-5 */ |
| 254 | return CS_BAD; |
| 255 | } |
| 256 | |
| 257 | void htmlencode_put (register char *s,register unsigned int l) |
| 258 | /* At this time, us-ascii, iso-8859-? create no problems. We just encode */ |
| 259 | /* some html chars. iso-2022 may have these chars as character components.*/ |
| 260 | /* cs is set for these, 3 for CN, 2 for others. Bit 0 set means 2 byte */ |
| 261 | /* chars for SS2/SS3 shiftouts (JP doesn't use them, KR has single byte. */ |
| 262 | /* If cs is set and we're shifted out (so set) we don't substitute. We */ |
| 263 | /* also look for SI/SO to adjust so, and ESC to detect SS2/SS3. Need to */ |
| 264 | /* ignore other ESC seqs correctly. JP doesn't use SI/SO, but uses */ |
| 265 | /* ESC ( B/J and ESC $ B/@ analogously, so we use these to toggle so. */ |
| 266 | /* "Roman", i.e. ESC ( J is treated as ascii - no differences in html- */ |
| 267 | /* relevant chars. Together, this allows us to deal with all iso-2022-* */ |
| 268 | /* as a package. see rfc1468, 1554, 1557, 1922 for more info. */ |
| 269 | /* line break at 84 to avoid splits with lines just a little too long. */ |
| 270 | { |
| 271 | if (!cs) { /* us-ascii & iso-8859- & unrecognized */ |
| 272 | for (;l--;s++) { |
| 273 | precharcount++; |
| 274 | switch (*s) { |
| 275 | case '>': oputs(">"); break; |
| 276 | case '<': oputs("<"); break; |
| 277 | case '"': oputs("""); break; |
| 278 | case '&': oputs("&"); break; |
| 279 | case '\n': precharcount = 0; oput(s,1); break; |
| 280 | case ' ': |
| 281 | if (precharcount >= 84 && flagpre) { |
| 282 | oput("\n",1); /* in place of ' ' */ |
| 283 | precharcount = 0; |
| 284 | } else |
| 285 | oput(s,1); /* otherwise out with it. */ |
| 286 | break; |
| 287 | default: oput(s,1); break; |
| 288 | } |
| 289 | } |
| 290 | } else if (cs == CS_CN) { /* cn-, gb*, big5 */ |
| 291 | for (;l--;s++) { |
| 292 | precharcount++; |
| 293 | if (cn1) { cn2 = cn1; cn1 = 0; } /* this is byte 2 */ |
| 294 | else { cn2 = 0; cn1 = *s & 0x80; } /* this is byte 1/2 or ascii */ |
| 295 | if (!cn1 && !cn2) { /* ascii */ |
| 296 | switch (*s) { |
| 297 | case '>': oputs(">"); break; |
| 298 | case '<': oputs("<"); break; |
| 299 | case '"': oputs("""); break; |
| 300 | case '&': oputs("&"); break; |
| 301 | case '\n': precharcount = 0; oput(s,1); break; |
| 302 | case ' ': |
| 303 | if (precharcount >= 84 && flagpre) { |
| 304 | oput("\n",1); /* break in ascii sequence */ |
| 305 | precharcount = 0; |
| 306 | } else |
| 307 | oput(s,1); |
| 308 | break; |
| 309 | default: oput(s,1); break; |
| 310 | } |
| 311 | } else if (precharcount >= 84 && flagpre && cn2) { |
| 312 | oput("\n",1); /* break after 2-byte code */ |
| 313 | precharcount = 0; |
| 314 | } |
| 315 | } |
| 316 | } else { /* iso-2022 => PAIN! */ |
| 317 | for (;l--;s++) { |
| 318 | precharcount++; |
| 319 | if (ss23) { /* ss2/ss3 character */ |
| 320 | ss23--; |
| 321 | oput(s,1); |
| 322 | continue; |
| 323 | } |
| 324 | if (so) { /* = 0 ascii, = 1 SO charset */ |
| 325 | if (!(*s & 0xe0)) { /* ctrl-char */ |
| 326 | switch (*s) { |
| 327 | case ESC: state = 1; break; |
| 328 | case SI: so = 0; break; |
| 329 | case '\n': precharcount = 0; break; |
| 330 | default: break; |
| 331 | } |
| 332 | } |
| 333 | oput(s,1); |
| 334 | } else { /* check only ascii */ |
| 335 | switch (*s) { |
| 336 | case '>': oputs(">"); break; |
| 337 | case '<': oputs("<"); break; |
| 338 | case '"': oputs("""); break; |
| 339 | case '&': oputs("&"); break; |
| 340 | case ' ': |
| 341 | if (precharcount >= 84 && flagpre) { |
| 342 | oput("\n",1); /* break in ascii sequence */ |
| 343 | precharcount = 0; |
| 344 | } else |
| 345 | oput(s,1); |
| 346 | break; |
| 347 | default: |
| 348 | oput(s,1); |
| 349 | if (!(*s & 0xe0)) { |
| 350 | switch (*s) { |
| 351 | case SO: so = 1; break; |
| 352 | case ESC: state = 1; break; |
| 353 | case SI: so = 0; break; /* shouldn't happen */ |
| 354 | case '\n': precharcount = 0; break; |
| 355 | default: break; |
| 356 | } |
| 357 | } |
| 358 | } |
| 359 | } /* by now all output is done, now ESC interpretation */ |
| 360 | if (state) { |
| 361 | /* ESC code - don't count */ |
| 362 | if (precharcount) precharcount--; |
| 363 | state++; |
| 364 | switch (state) { |
| 365 | case 2: break; /* this was the ESC */ |
| 366 | case 3: switch (*s) { |
| 367 | case 'N': ss23 = (cs & 1) + 1; state = 0; break; |
| 368 | case 'O': ss23 = 2; state = 0; break; |
| 369 | case '(': state = 20; so = 0; break; /* JP ascii */ |
| 370 | case '$': break; /* var S2/SS2/SS3 des*/ |
| 371 | case '.': state = 10; /* g3 settings, one more char */ |
| 372 | default: state = 0; break; /* or JP */ |
| 373 | } |
| 374 | break; |
| 375 | case 4: switch (*s) { /* s2/ss2/ss3 or JP 2 byte shift */ |
| 376 | case 'B': |
| 377 | case '@': lastjp[0] = *s; |
| 378 | so = 1; state = 0; break; /* JP */ |
| 379 | default: break; /* other SS2/3 des */ |
| 380 | } |
| 381 | break; |
| 382 | case 5: state = 0; break; /* 4th char of ESC $ *|+|) X */ |
| 383 | case 11: state = 0; break; /* 3nd char of ESC . */ |
| 384 | case 21: state = 0; break; /* ESC ( X for JP */ |
| 385 | default: die_prog("bad state in htmlencode_put"); break; |
| 386 | } |
| 387 | } else if (so && flagpre && precharcount >= 84) { |
| 388 | /* 84 is nicer than 78/80 since most use GUI browser */ |
| 389 | /* iso-2022-* line splitter here. SO only, SI done above */ |
| 390 | /* For JP need even precharcount, add ESC ( B \n ESC $B */ |
| 391 | if (so && !(precharcount & 1)) { /* even */ |
| 392 | precharcount = 0; /* reset */ |
| 393 | if (cs == CS_2022_JP) { /* JP uses ESC like SI/SO */ |
| 394 | oputs(TOASCII); |
| 395 | oput("\n",1); |
| 396 | oputs(TOJP); |
| 397 | oput(lastjp,1); |
| 398 | } else { |
| 399 | if (so) { |
| 400 | /* For iso-2022-CN: nothing if SI, otherwise SI \n SO */ |
| 401 | /* For iso-2022-KR same */ |
| 402 | oputs(SI_LF_SO); |
| 403 | } else |
| 404 | oput("\n",1); |
| 405 | } |
| 406 | } |
| 407 | } |
| 408 | } |
| 409 | } |
| 410 | } |
| 411 | |
| 412 | char hexchar[] = "0123456789ABCDEF"; |
| 413 | char enc_url[] = "%00"; |
| 414 | |
| 415 | void urlencode_put (register char *s,register unsigned int l) |
| 416 | { |
| 417 | for (;l--;s++) { |
| 418 | register unsigned char ch; |
| 419 | ch = (unsigned char) *s; |
| 420 | if (ch <= 32 || ch > 127 || byte_chr("?<>=/:%+#\"",10,ch) != 10) { |
| 421 | enc_url[2] = hexchar[ch & 0xf]; |
| 422 | enc_url[1] = hexchar[(ch >> 4) & 0xf]; |
| 423 | oput(enc_url,3); |
| 424 | } else |
| 425 | oput(s,1); |
| 426 | } |
| 427 | } |
| 428 | |
| 429 | void urlencode_puts(register char *s) |
| 430 | { |
| 431 | urlencode_put(s,str_len(s)); |
| 432 | } |
| 433 | |
| 434 | int checkhash(register char *s) |
| 435 | { |
| 436 | register int l = HASHLEN; |
| 437 | while (l--) { |
| 438 | if (*s < 'a' || *s > 'p') return 0; /* illegal */ |
| 439 | s++; |
| 440 | } |
| 441 | if (*s) return 0; /* extraneous junk */ |
| 442 | return 1; |
| 443 | } |
| 444 | |
| 445 | int makefn(stralloc *sa,char item, unsigned long n, char *hash) |
| 446 | { |
| 447 | if (!stralloc_copys(sa,"archive/")) die_nomem(); |
| 448 | if (item == ITEM_MESSAGE) { |
| 449 | if (!stralloc_catb(sa,strnum,fmt_ulong(strnum, n / 100))) die_nomem(); |
| 450 | if (!stralloc_cats(sa,"/")) die_nomem(); |
| 451 | if (!stralloc_catb(sa,strnum,fmt_uint0(strnum,(unsigned int) (n % 100),2))) |
| 452 | die_nomem(); |
| 453 | } else if (item == ITEM_DATE) { |
| 454 | if (!stralloc_cats(sa,"threads/")) die_nomem(); |
| 455 | if (!stralloc_catb(sa,strnum,fmt_ulong(strnum,n))) |
| 456 | die_nomem(); |
| 457 | } else if (item == ITEM_INDEX) { |
| 458 | if (!stralloc_catb(sa,strnum,fmt_ulong(strnum, n / 100))) die_nomem(); |
| 459 | if (!stralloc_cats(sa,"/index")) die_nomem(); |
| 460 | } else { |
| 461 | if (item == ITEM_AUTHOR) { |
| 462 | if (!stralloc_cats(sa,"authors/")) die_nomem(); |
| 463 | } else { |
| 464 | if (!stralloc_cats(sa,"subjects/")) die_nomem(); |
| 465 | } |
| 466 | if (!hash) return 0; |
| 467 | if (!stralloc_catb(sa,hash,2)) die_nomem(); |
| 468 | if (!stralloc_cats(sa,"/")) die_nomem(); |
| 469 | if (!stralloc_catb(sa,hash+2,HASHLEN-2)) die_nomem(); |
| 470 | } |
| 471 | if (!stralloc_0(sa)) die_nomem(); |
| 472 | return 1; |
| 473 | } |
| 474 | |
| 475 | void link(struct msginfo *infop,char item,char axis,unsigned long msg, |
| 476 | char *data,unsigned int l) |
| 477 | /* links with targets other msg -> msg. If the link is for author, we */ |
| 478 | /* still supply subject, since most navigation at the message level will */ |
| 479 | /* be along threads rather than author and we don't have an author index.*/ |
| 480 | { |
| 481 | char *cp; |
| 482 | |
| 483 | cp = (char *) 0; |
| 484 | /* this should be separate routine. Works because all index views */ |
| 485 | /* have at least a subject link */ |
| 486 | if (axis == ITEM_SUBJECT && infop->target == msg) |
| 487 | oputs("<a name=b></a>"); |
| 488 | oput(url.s,url.len); |
| 489 | cmdstr[0] = ITEM[item]; |
| 490 | cmdstr[1] = ITEM[axis]; |
| 491 | cmdstr[2] = DIRECT[DIRECT_SAME + 1]; |
| 492 | if (item == ITEM_MESSAGE && axis == ITEM_AUTHOR) { |
| 493 | if (infop->subject) { |
| 494 | cmdstr[1] = ITEM[ITEM_SUBJECT]; |
| 495 | cp = infop->subject; /* always HASLEN in length due to decode_cmd */ |
| 496 | } |
| 497 | } |
| 498 | oputs(cmdstr); /* e.g. map: */ |
| 499 | oput(strnum,fmt_ulong(strnum,msg)); |
| 500 | if (!cp && l >= HASHLEN) |
| 501 | cp = data; |
| 502 | if (infop->date) { |
| 503 | oput(":",1); |
| 504 | oput(strnum,fmt_ulong(strnum,infop->date)); |
| 505 | } |
| 506 | if (cp) { |
| 507 | oput(":",1); |
| 508 | oput(cp,HASHLEN); |
| 509 | } |
| 510 | switch (item) { |
| 511 | case ITEM_MESSAGE: oputs("\" class=mlk>"); break; |
| 512 | case ITEM_AUTHOR: oputs("#b\" class=alk>"); break; |
| 513 | case ITEM_SUBJECT: oputs("#b\" class=slk>"); break; |
| 514 | default: oputs("#b\">"); break; |
| 515 | } |
| 516 | if (HASHLEN + 1 < l) |
| 517 | htmlencode_put(data + HASHLEN + 1,l - HASHLEN - 1); |
| 518 | else |
| 519 | oputs("(none)"); |
| 520 | oputs("</A>"); |
| 521 | } |
| 522 | |
| 523 | void linktoindex(struct msginfo *infop,char item) |
| 524 | /* for links from message view back to author/subject/threads index */ |
| 525 | { |
| 526 | oput(url.s,url.len); |
| 527 | cmdstr[0] = ITEM[item]; |
| 528 | cmdstr[1] = ITEM[item]; |
| 529 | cmdstr[2] = DIRECT[DIRECT_SAME + 1]; |
| 530 | oputs(cmdstr); /* e.g. map: */ |
| 531 | oput(strnum,fmt_ulong(strnum,infop->target)); |
| 532 | if (infop->date) { |
| 533 | oput(":",1); |
| 534 | oput(strnum,fmt_ulong(strnum,infop->date)); |
| 535 | } |
| 536 | switch (item) { |
| 537 | case ITEM_AUTHOR: |
| 538 | if (infop->author) { |
| 539 | oput(":",1); |
| 540 | oputs(infop->author); |
| 541 | } |
| 542 | break; |
| 543 | case ITEM_SUBJECT: |
| 544 | if (infop->subject) { |
| 545 | oput(":",1); |
| 546 | oputs(infop->subject); |
| 547 | } |
| 548 | break; |
| 549 | default: |
| 550 | break; |
| 551 | } |
| 552 | oputs("#b\""); |
| 553 | } |
| 554 | |
| 555 | void link_msg(struct msginfo *infop,char axis,char direction) |
| 556 | /* Creates <a href="mapa:123:aaaaa...."> using a maximum of available */ |
| 557 | /* info only for links where the target is a message */ |
| 558 | { |
| 559 | unsigned long msg; |
| 560 | char *acc; |
| 561 | oput(url.s,url.len); |
| 562 | cmdstr[0] = ITEM[ITEM_MESSAGE]; |
| 563 | cmdstr[1] = ITEM[axis]; |
| 564 | cmdstr[2] = DIRECT[direction + 1]; |
| 565 | msg = infop->target; |
| 566 | acc = 0; |
| 567 | switch(axis) { |
| 568 | case ITEM_SUBJECT: |
| 569 | if (infop->subject) |
| 570 | acc = infop->subject; |
| 571 | if (infop->subjnav) /* translate to message navigation */ |
| 572 | if (infop->subjnav[direction]) { |
| 573 | msg = infop->subjnav[direction]; |
| 574 | cmdstr[2] = DIRECT[DIRECT_SAME + 1]; |
| 575 | } |
| 576 | acc = infop->subject; |
| 577 | break; |
| 578 | case ITEM_AUTHOR: |
| 579 | if (infop->author) |
| 580 | acc = infop->author; |
| 581 | if (infop->authnav) /* translate to message navigation */ |
| 582 | if (infop->authnav[direction]) { |
| 583 | msg = infop->authnav[direction]; |
| 584 | cmdstr[2] = DIRECT[DIRECT_SAME + 1]; |
| 585 | } |
| 586 | acc = infop->author; |
| 587 | break; |
| 588 | default: |
| 589 | break; |
| 590 | } |
| 591 | oputs(cmdstr); |
| 592 | oput(strnum,fmt_ulong(strnum,msg)); |
| 593 | if (acc) { |
| 594 | oputs(":"); |
| 595 | oputs(acc); |
| 596 | } |
| 597 | oputs("\">"); |
| 598 | } |
| 599 | |
| 600 | void justpress() |
| 601 | { |
| 602 | oputs("?subject="); |
| 603 | urlencode_puts("Just Click \"SEND\"!"); |
| 604 | } |
| 605 | |
| 606 | void homelink() |
| 607 | { |
| 608 | register char *cp,*cp1,*cp2; |
| 609 | |
| 610 | if (home && *home) { |
| 611 | cp = home; |
| 612 | for(;;) { |
| 613 | cp1 = cp; |
| 614 | while(*cp1 && *cp1 != '=') cp1++; |
| 615 | if (!*cp1) break; |
| 616 | cp2 = cp1; |
| 617 | while(*cp2 && *cp2 != ',') cp2++; |
| 618 | oputs("<a href=\""); |
| 619 | oput(cp1 + 1,cp2 - cp1 - 1); |
| 620 | oputs("\">"); |
| 621 | oput(cp,cp1 - cp); |
| 622 | oputs("</a>\n"); |
| 623 | if (!*cp2) break; |
| 624 | cp = cp2 + 1; |
| 625 | } |
| 626 | } |
| 627 | } |
| 628 | |
| 629 | void subfaqlinks() |
| 630 | { |
| 631 | oputs("<a href=\"mailto:"); |
| 632 | oputs(local); |
| 633 | oputs(SUBSCRIBE); |
| 634 | oputs("@"); |
| 635 | oputs(host); |
| 636 | justpress(); |
| 637 | oputs(TXT_CGI_SUBSCRIBE); |
| 638 | oputs("<a href=\"mailto:"); |
| 639 | oputs(local); |
| 640 | oputs(FAQ); |
| 641 | oputs("@"); |
| 642 | oputs(host); |
| 643 | justpress(); |
| 644 | oputs(TXT_CGI_FAQ); |
| 645 | } |
| 646 | |
| 647 | void msglinks(struct msginfo *infop) |
| 648 | /* Creates the html for all links from one message view */ |
| 649 | { |
| 650 | oputs("<DIV class=msglinks><STRONG>Msg by: "); |
| 651 | link_msg(infop,ITEM_SUBJECT,DIRECT_PREV); |
| 652 | oputs("[<-</A> "); |
| 653 | linktoindex(infop,ITEM_SUBJECT); |
| 654 | oputs(">thread</A> "); |
| 655 | link_msg(infop,ITEM_SUBJECT,DIRECT_NEXT); |
| 656 | oputs("->]</A> \n"); |
| 657 | link_msg(infop,ITEM_MESSAGE,DIRECT_PREV); |
| 658 | oputs("[<-</A> "); |
| 659 | linktoindex(infop,ITEM_INDEX); |
| 660 | oputs(">time</A> "); |
| 661 | link_msg(infop,ITEM_MESSAGE,DIRECT_NEXT); |
| 662 | oputs("->]</A> \n"); |
| 663 | link_msg(infop,ITEM_AUTHOR,DIRECT_PREV); |
| 664 | oputs("[<-</A> "); |
| 665 | linktoindex(infop,ITEM_AUTHOR); |
| 666 | oputs(">author</A> "); |
| 667 | link_msg(infop,ITEM_AUTHOR,DIRECT_NEXT); |
| 668 | oputs("->]</A> |\n"); |
| 669 | linktoindex(infop,ITEM_DATE); |
| 670 | oputs(">[Threads]</A>\n"); |
| 671 | homelink(); |
| 672 | oputs("\n<a href=\"mailto:"); |
| 673 | oputs(local); |
| 674 | oputs(GET); |
| 675 | strnum[fmt_ulong(strnum,infop->target)] = '\0'; |
| 676 | oputs(strnum); |
| 677 | oputs("@"); |
| 678 | oputs(host); |
| 679 | justpress(); |
| 680 | oputs("\">[eMsg]</A>\n"); |
| 681 | oputs("<a href=\"mailto:"); |
| 682 | oputs(local); |
| 683 | oputs(THREAD); |
| 684 | oputs(strnum); |
| 685 | oputs("@"); |
| 686 | oputs(host); |
| 687 | justpress(); |
| 688 | oputs("\">[eThread]</A>\n"); |
| 689 | subfaqlinks(); |
| 690 | oputs("</STRONG></DIV>\n"); |
| 691 | } |
| 692 | |
| 693 | #define SPC_BASE 1 |
| 694 | #define SPC_BANNER 2 |
| 695 | |
| 696 | void html_header(char *t,char *s, unsigned int l,char *class,int flagspecial) |
| 697 | /* flagspecial: 0x1 => robot index; no style sheet, no BASE */ |
| 698 | /* flagspecial: 0x2 => banner, if available */ |
| 699 | { |
| 700 | oputs("Content-Type: text/html; charset="); |
| 701 | oput(curcharset.s,curcharset.len); |
| 702 | |
| 703 | oputs("\nCache-Control: "); |
| 704 | switch (cache) { |
| 705 | case 0: |
| 706 | oputs("no-cache"); /* known upper border */ |
| 707 | break; |
| 708 | case 1: |
| 709 | oputs("max-age=300"); /* 5 min - most lists aren't that fast*/ |
| 710 | break; |
| 711 | case 2: |
| 712 | oputs("max-age=1209600"); /* 14 days is a long time */ |
| 713 | break; |
| 714 | } |
| 715 | oputs("\n\n"); |
| 716 | oputs("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.0//EN\">\n"); |
| 717 | oputs("<HTML><HEAD>\n<TITLE>"); |
| 718 | if (local) { |
| 719 | oputs(local); |
| 720 | oputs("@"); |
| 721 | oputs(host); |
| 722 | oputs(": "); |
| 723 | } |
| 724 | if (t) oputs(t); |
| 725 | if (s) htmlencode_put(s,l); |
| 726 | oputs("</TITLE>\n"); |
| 727 | if (class && *class && stylesheet && *stylesheet) { |
| 728 | oputs("<LINK href=\""); |
| 729 | oputs(stylesheet); |
| 730 | oputs("\" rel=\"stylesheet\" type=\"text/css\">\n"); |
| 731 | } |
| 732 | if (!flagrobot) /* robot access allowed to follow */ |
| 733 | oputs("<META NAME=\"robots\" CONTENT=\"noindex\">\n"); |
| 734 | if (flagrobot < 2) |
| 735 | oputs("<META NAME=\"robots\" CONTENT=\"nofollow\">\n"); |
| 736 | if (flagspecial & SPC_BASE) |
| 737 | oput(base.s,base.len); |
| 738 | oputs("</HEAD>\n"); |
| 739 | if (class && *class) { |
| 740 | oputs("<BODY class="); |
| 741 | oputs(class); |
| 742 | oputs(">\n"); |
| 743 | } else |
| 744 | oputs("<BODY>\n"); |
| 745 | |
| 746 | } |
| 747 | |
| 748 | void html_footer(int flagspecial) |
| 749 | { |
| 750 | oputs("<HR><DIV class=copyright>"); |
| 751 | oputs(EZ_CRIGHT); |
| 752 | oputs("</DIV>"); |
| 753 | if ((flagspecial & SPC_BANNER) && banner && *banner) { |
| 754 | oputs("<DIV class=banner>\n"); |
| 755 | if (*banner == '<') oputs(banner); |
| 756 | else { |
| 757 | substdio_flush(&ssout); |
| 758 | sig_pipeignore(); |
| 759 | bannerargs[0] = banner; |
| 760 | bannerargs[1] = host; |
| 761 | bannerargs[2] = local; |
| 762 | bannerargs[3] = 0; |
| 763 | /* We log errors but just complete the page anyway, since we're */ |
| 764 | /* already committed to output something. */ |
| 765 | switch(child = fork()) { |
| 766 | case -1: |
| 767 | strerr_warn3(FATAL,ERR_FORK,"banner program: ",&strerr_sys); |
| 768 | break; |
| 769 | case 0: |
| 770 | execv(*bannerargs,bannerargs); |
| 771 | strerr_die3x(100,FATAL,ERR_EXECUTE,"banner program: "); |
| 772 | break; |
| 773 | } |
| 774 | /* parent */ |
| 775 | wait_pid(&wstat,child); |
| 776 | if (wait_crashed(wstat)) |
| 777 | strerr_warn2(FATAL,ERR_CHILD_CRASHED,(struct strerr *) 0); |
| 778 | if (wait_exitcode(wstat)) |
| 779 | strerr_warn2(FATAL,ERR_CHILD_UNKNOWN,(struct strerr *) 0); |
| 780 | } |
| 781 | oputs("</DIV>\n"); |
| 782 | } |
| 783 | oputs("</BODY>\n</HTML>\n"); |
| 784 | substdio_flush(&ssout); |
| 785 | } |
| 786 | |
| 787 | /* DATE functions */ |
| 788 | |
| 789 | void datelink(struct msginfo *infop,unsigned long d,char direction) |
| 790 | /* output a date with link back to thread index */ |
| 791 | { |
| 792 | oput(url.s,url.len); |
| 793 | cmdstr[0] = ITEM[ITEM_DATE]; |
| 794 | cmdstr[1] = ITEM[ITEM_DATE]; |
| 795 | cmdstr[2] = DIRECT[direction + 1]; |
| 796 | oputs(cmdstr); |
| 797 | if (direction == DIRECT_LAST) |
| 798 | oput("0",1); /* suppress msgnum to avoid going there */ |
| 799 | else |
| 800 | oput(strnum,fmt_ulong(strnum,infop->target)); |
| 801 | oputs(":"); |
| 802 | oput(strnum,fmt_ulong(strnum,d)); |
| 803 | oputs("#b\">"); |
| 804 | switch (direction) { |
| 805 | case DIRECT_SAME: |
| 806 | if (dateline(&dtline,d) < 0) die_nomem(); |
| 807 | oput(dtline.s,dtline.len); |
| 808 | break; |
| 809 | case DIRECT_PREV: |
| 810 | oputs("[<-]"); |
| 811 | break; |
| 812 | case DIRECT_NEXT: |
| 813 | oputs("[->]"); |
| 814 | break; |
| 815 | case DIRECT_FIRST: |
| 816 | oputs("[<<-]"); |
| 817 | break; |
| 818 | case DIRECT_LAST: |
| 819 | oputs("[->>]"); |
| 820 | break; |
| 821 | } |
| 822 | oputs("</A>"); |
| 823 | } |
| 824 | |
| 825 | void finddate(struct msginfo *infop) |
| 826 | /* DIRECT_SAME works as DIRECT_PREV, dvs returns previous date or last date */ |
| 827 | { |
| 828 | DIR *archivedir; |
| 829 | direntry *d; |
| 830 | unsigned long ddate, startdate; |
| 831 | unsigned long below, above; |
| 832 | |
| 833 | below = 0L; |
| 834 | above = MAXULONG; /* creating a Y 0xffffff problem */ |
| 835 | startdate = infop->date; |
| 836 | archivedir = opendir("archive/threads/"); |
| 837 | if (!archivedir) |
| 838 | if (errno != error_noent) |
| 839 | strerr_die4sys(111,FATAL,ERR_OPEN,dir,"/archive/threads: "); |
| 840 | else |
| 841 | strerr_die4sys(100,FATAL,ERR_OPEN,dir,"/archive/threads: "); |
| 842 | |
| 843 | while ((d = readdir(archivedir))) { /* dxxx/ */ |
| 844 | if (str_equal(d->d_name,".")) continue; |
| 845 | if (str_equal(d->d_name,"..")) continue; |
| 846 | scan_ulong(d->d_name,&ddate); |
| 847 | if (!ddate) continue; /* just in case some smart guy ... */ |
| 848 | if (startdate) { |
| 849 | if (ddate > startdate && ddate < above) above = ddate; |
| 850 | if (ddate < startdate && ddate > below) below = ddate; |
| 851 | } else { |
| 852 | if (ddate < above) above = ddate; |
| 853 | if (ddate > below) below = ddate; |
| 854 | } |
| 855 | } |
| 856 | closedir(archivedir); |
| 857 | |
| 858 | if (infop->direction == DIRECT_NEXT && above != MAXULONG || !below) |
| 859 | /* we always give a valid date as long as there is at least one */ |
| 860 | infop->date = above; |
| 861 | else |
| 862 | infop->date = below; |
| 863 | return; |
| 864 | } |
| 865 | |
| 866 | void latestdate(struct msginfo *infop,int flagfail) |
| 867 | { |
| 868 | if (!flagfail) { |
| 869 | datetime_tai(&dt,now()); |
| 870 | infop->date = ((unsigned long) dt.year + 1900) * 100 + dt.mon + 1; |
| 871 | } else { |
| 872 | infop->date = 0; |
| 873 | infop->direction = DIRECT_PREV; |
| 874 | finddate(infop); |
| 875 | } |
| 876 | } |
| 877 | |
| 878 | void firstdate(struct msginfo *infop,int flagfail) |
| 879 | { |
| 880 | infop->date = 0; |
| 881 | infop->direction = DIRECT_NEXT; |
| 882 | finddate(infop); |
| 883 | } |
| 884 | |
| 885 | void getdate(struct msginfo *infop,int flagfail) |
| 886 | /* infop->date has to be 0 or valid on entry. Month outside of [1-12] on */ |
| 887 | /* entry causes GIGO */ |
| 888 | { |
| 889 | if (!flagfail) { /* guess */ |
| 890 | if (infop->direction == DIRECT_NEXT) { |
| 891 | infop->date++; |
| 892 | if (infop->date % 100 > 12) infop->date += (100 - 12); |
| 893 | } else if (infop->direction == DIRECT_PREV) { |
| 894 | infop->date--; |
| 895 | if (!infop->date % 100) infop->date -= (100 - 12); |
| 896 | } |
| 897 | } else |
| 898 | finddate(infop); |
| 899 | return; |
| 900 | } |
| 901 | |
| 902 | indexlinks(struct msginfo *infop) |
| 903 | { |
| 904 | unsigned long tmpmsg; |
| 905 | |
| 906 | tmpmsg = infop->target; |
| 907 | infop->target = 1; |
| 908 | oputs("<DIV class=idxlinks><STRONG>"); |
| 909 | linktoindex(infop,ITEM_INDEX); |
| 910 | oputs(">[<<-]</A>\n"); |
| 911 | if (tmpmsg >= 100) infop->target = tmpmsg - 100; |
| 912 | linktoindex(infop,ITEM_INDEX); |
| 913 | oputs(">[<-]</A>\n"); |
| 914 | infop->target = tmpmsg + 100; |
| 915 | linktoindex(infop,ITEM_INDEX); |
| 916 | oputs(">[->]</A>\n"); |
| 917 | infop->target = MAXULONG; |
| 918 | linktoindex(infop,ITEM_INDEX); |
| 919 | oputs(">[->>]</A> |\n"); |
| 920 | infop->target = tmpmsg; |
| 921 | linktoindex(infop,ITEM_DATE); |
| 922 | oputs(">[Threads by date]</A>\n"); |
| 923 | subfaqlinks(); |
| 924 | homelink(); |
| 925 | oputs("</STRONG></DIV>\n"); |
| 926 | } |
| 927 | |
| 928 | int show_index(struct msginfo *infop) |
| 929 | { |
| 930 | unsigned long thismsg; |
| 931 | unsigned int pos,l; |
| 932 | char ch; |
| 933 | |
| 934 | (void) makefn(&fn,ITEM_INDEX,msginfo.target,""); |
| 935 | if ((fd = open_read(fn.s)) == -1) |
| 936 | if (errno == error_noent) |
| 937 | return 0; |
| 938 | else |
| 939 | strerr_die4sys(111,FATAL,ERR_OPEN,fn.s,": "); |
| 940 | substdio_fdbuf(&ssin,read,fd,inbuf,sizeof(inbuf)); |
| 941 | if (!stralloc_copyb(&line,strnum, |
| 942 | fmt_ulong(strnum,(unsigned long) (infop->target / 100)))) |
| 943 | die_nomem(); |
| 944 | if (!stralloc_cats(&line,"xx")) die_nomem(); |
| 945 | html_header("Messages ",line.s,line.len,"idxbody",SPC_BANNER | SPC_BASE); |
| 946 | indexlinks(infop); |
| 947 | oputs("<HR><H1 id=\"idxhdr\">"); |
| 948 | oputs("Messages "); |
| 949 | oput(line.s,line.len); |
| 950 | oputs("</H1>\n"); |
| 951 | oputs("<HR><DIV class=idx>\n"); |
| 952 | for (;;) { |
| 953 | if (getln(&ssin,&line,&match,'\n') == -1) |
| 954 | strerr_die4sys(111,FATAL,ERR_READ,fn.s,": "); |
| 955 | if (!match) |
| 956 | break; |
| 957 | pos = scan_ulong(line.s,&thismsg); |
| 958 | l = pos; |
| 959 | ch = line.s[pos++]; |
| 960 | pos++; |
| 961 | if (line.len < pos + 1 + HASHLEN) |
| 962 | strerr_die2x(100,FATAL,"index line with truncated subject entry"); |
| 963 | if (!stralloc_copyb(&subject,line.s+pos,HASHLEN)) die_nomem(); |
| 964 | if (!stralloc_0(&subject)) die_nomem(); |
| 965 | infop->axis = ITEM_SUBJECT; |
| 966 | infop->subject = subject.s; |
| 967 | oput(strnum,fmt_uint0(strnum,(unsigned int) thismsg % 100,2)); |
| 968 | oputs(": "); |
| 969 | link(infop,ITEM_MESSAGE,ITEM_SUBJECT,thismsg,line.s+pos,line.len - pos - 1); |
| 970 | oputs("\n"); |
| 971 | if (ch == ':') { |
| 972 | if (getln(&ssin,&line,&match,'\n') == -1) |
| 973 | strerr_die4sys(111,FATAL,ERR_READ,fn.s,": "); |
| 974 | if (!match) |
| 975 | break; |
| 976 | pos = byte_chr(line.s,line.len,';'); |
| 977 | if (pos != line.len) { |
| 978 | infop->date = date2yyyymm(line.s); |
| 979 | oputs("("); |
| 980 | link(infop,ITEM_AUTHOR,ITEM_AUTHOR,thismsg,line.s+pos+1, |
| 981 | line.len - pos - 2); |
| 982 | oputs(")<BR>\n"); |
| 983 | } |
| 984 | } |
| 985 | } |
| 986 | close(fd); |
| 987 | oputs("\n</DIV><HR>\n"); |
| 988 | indexlinks(infop); |
| 989 | html_footer(SPC_BANNER); |
| 990 | return 1; |
| 991 | } |
| 992 | |
| 993 | void objectlinks(struct msginfo *infop, char item) |
| 994 | { |
| 995 | oputs("<DIV class=objlinks><STRONG>\n"); |
| 996 | if (item == ITEM_DATE) { |
| 997 | datelink(infop,0,DIRECT_FIRST); |
| 998 | datelink(infop,infop->date,DIRECT_PREV); |
| 999 | datelink(infop,infop->date,DIRECT_NEXT); |
| 1000 | datelink(infop,0,DIRECT_LAST); |
| 1001 | oputs("\n"); |
| 1002 | } else { |
| 1003 | if (!infop->target) infop->axis = ITEM_DATE; |
| 1004 | linktoindex(infop,ITEM_DATE); |
| 1005 | oputs(">[Threads by date]</A>\n"); |
| 1006 | } |
| 1007 | if (item != ITEM_INDEX) { |
| 1008 | linktoindex(infop,ITEM_INDEX); |
| 1009 | oputs(">[Messages by date]</A>\n"); |
| 1010 | } |
| 1011 | homelink(); |
| 1012 | subfaqlinks(); |
| 1013 | oputs("</STRONG></DIV>\n"); |
| 1014 | } |
| 1015 | |
| 1016 | int show_object(struct msginfo *infop,char item) |
| 1017 | /* shows thread, threads, author */ |
| 1018 | /* infop has the info needed to access the author/subject/thread file */ |
| 1019 | { |
| 1020 | unsigned long lastdate,thisdate,thismsg; |
| 1021 | char linkitem; |
| 1022 | char targetitem; |
| 1023 | unsigned int pos; |
| 1024 | |
| 1025 | lastdate = 0L; |
| 1026 | targetitem = ITEM_MESSAGE; /* default message is target */ |
| 1027 | switch (item) { |
| 1028 | case ITEM_SUBJECT: |
| 1029 | if (!makefn(&fn,ITEM_SUBJECT,0L,infop->subject)) return 0; |
| 1030 | break; |
| 1031 | case ITEM_AUTHOR: |
| 1032 | if (!makefn(&fn,ITEM_AUTHOR,0L,infop->author)) return 0; |
| 1033 | break; |
| 1034 | case ITEM_DATE: |
| 1035 | if (!makefn(&fn,ITEM_DATE,infop->date,"")) return 0; |
| 1036 | break; |
| 1037 | default: |
| 1038 | die_prog("Bad object type in show_object"); |
| 1039 | } |
| 1040 | if ((fd = open_read(fn.s)) == -1) |
| 1041 | if (errno == error_noent) |
| 1042 | return 0; |
| 1043 | else |
| 1044 | strerr_die4sys(111,FATAL,ERR_OPEN,fn.s,": "); |
| 1045 | substdio_fdbuf(&ssin,read,fd,inbuf,sizeof(inbuf)); |
| 1046 | if (item != ITEM_DATE) { |
| 1047 | if (getln(&ssin,&line,&match,'\n') == -1) /* read subject */ |
| 1048 | strerr_die4sys(111,FATAL,ERR_READ,fn.s,": "); |
| 1049 | if (!match || line.len < HASHLEN + 2) |
| 1050 | strerr_die4x(111,FATAL,ERR_READ,fn.s,": nothing there"); |
| 1051 | } |
| 1052 | switch (item) { |
| 1053 | case ITEM_SUBJECT: |
| 1054 | html_header("Thread on: ",line.s + HASHLEN + 1, |
| 1055 | line.len - HASHLEN - 2,"subjbody",SPC_BANNER | SPC_BASE); |
| 1056 | objectlinks(infop,item); |
| 1057 | oputs("<HR><H1>On: "); |
| 1058 | oput(line.s+HASHLEN+1,line.len-HASHLEN-2); |
| 1059 | oputs("</H1>\n"); |
| 1060 | break; |
| 1061 | case ITEM_AUTHOR: |
| 1062 | html_header("Posts by: ",line.s + HASHLEN + 1, |
| 1063 | line.len - HASHLEN - 2,"authbody",SPC_BANNER | SPC_BASE); |
| 1064 | objectlinks(infop,item); |
| 1065 | oputs("<HR><H1>By: "); |
| 1066 | oput(line.s+HASHLEN+1,line.len-HASHLEN-2); |
| 1067 | oputs("</H1>\n"); |
| 1068 | break; |
| 1069 | case ITEM_DATE: |
| 1070 | /* targetitem = ITEM_SUBJECT;*/ /* thread index is target */ |
| 1071 | thisdate = infop->date; |
| 1072 | if (dateline(&dtline,infop->date) < 0) die_nomem(); |
| 1073 | html_header("Threads for ", |
| 1074 | dtline.s,dtline.len,"threadsbody",SPC_BANNER | SPC_BASE); |
| 1075 | objectlinks(infop,item); |
| 1076 | oputs("<HR><H1>Threads for "); |
| 1077 | oput(dtline.s,dtline.len); |
| 1078 | oputs("</H1>\n"); |
| 1079 | break; |
| 1080 | default: die_prog("unrecognized object type in show_object"); |
| 1081 | } |
| 1082 | |
| 1083 | oputs("<DIV class=obj>\n"); |
| 1084 | for (;;) { |
| 1085 | if (getln(&ssin,&line,&match,'\n') == -1) /* read subject */ |
| 1086 | strerr_die4sys(111,FATAL,ERR_READ,fn.s,": "); |
| 1087 | if (!match) |
| 1088 | break; |
| 1089 | pos = scan_ulong(line.s,&thismsg); |
| 1090 | if (line.s[pos++] != ':') |
| 1091 | strerr_die4x(100,FATAL,"entry in ",fn.s," lacks message number"); |
| 1092 | if (item != ITEM_DATE) { /* no date for threads by date */ |
| 1093 | pos += scan_ulong(line.s+pos,&thisdate); |
| 1094 | infop->date = thisdate; |
| 1095 | if (line.s[pos++] != ':') |
| 1096 | strerr_die4x(100,FATAL,"entry in ",fn.s," lacks date"); |
| 1097 | } |
| 1098 | if (line.len < pos + HASHLEN + 2) |
| 1099 | strerr_die4x(100,FATAL,"entry in ",fn.s," lacks hash"); |
| 1100 | if (thisdate != lastdate) { |
| 1101 | if (!lastdate) |
| 1102 | oputs("<UL>\n"); |
| 1103 | else |
| 1104 | oputs("<P>"); |
| 1105 | oputs("<LI><H2>"); |
| 1106 | datelink(infop,thisdate,DIRECT_SAME); |
| 1107 | lastdate = thisdate; |
| 1108 | oputs("</H2>\n"); |
| 1109 | } |
| 1110 | if (item == ITEM_SUBJECT) |
| 1111 | linkitem = ITEM_AUTHOR; |
| 1112 | else |
| 1113 | linkitem = ITEM_SUBJECT; |
| 1114 | link(infop,targetitem,linkitem,thismsg,line.s+pos,line.len - pos - 1); |
| 1115 | oputs("<BR>\n"); |
| 1116 | } |
| 1117 | close(fd); |
| 1118 | oputs("</UL>\n"); |
| 1119 | if (!infop->target) |
| 1120 | oputs("<a name=b></a>"); |
| 1121 | oputs("<HR></DIV>\n"); |
| 1122 | objectlinks(infop,item); |
| 1123 | html_footer(SPC_BANNER); |
| 1124 | return 1; |
| 1125 | } |
| 1126 | |
| 1127 | void clear_mime() |
| 1128 | { |
| 1129 | mime_current->charset.len = 0; /* exist but need emptying */ |
| 1130 | mime_current->boundary.len = 0; |
| 1131 | mime_current->ctype.len = 0; |
| 1132 | mime_current->mimetype = MIME_NONE; |
| 1133 | mime_current->ctenc = CTENC_NONE; |
| 1134 | mime_current->cs = CS_NONE; |
| 1135 | } |
| 1136 | |
| 1137 | void new_mime() |
| 1138 | { |
| 1139 | mime_tmp = mime_current; |
| 1140 | if (mime_current) |
| 1141 | mime_current = mime_current->next; |
| 1142 | if (!mime_current) { |
| 1143 | if (!(mime_current = (mime_info *) alloc(sizeof (mime_info)))) |
| 1144 | die_nomem(); |
| 1145 | mime_current->charset = sainit; /* init */ |
| 1146 | mime_current->boundary = sainit; |
| 1147 | mime_current->ctype = sainit; |
| 1148 | mime_current->next = (mime_info *) 0; |
| 1149 | mime_current->previous = mime_tmp; |
| 1150 | } |
| 1151 | clear_mime(); |
| 1152 | if (mime_tmp) |
| 1153 | mime_current->level = mime_tmp->level + 1; |
| 1154 | else |
| 1155 | mime_current->level = 1; |
| 1156 | } |
| 1157 | |
| 1158 | void mime_getarg(stralloc *sa,char **s, unsigned int *l) |
| 1159 | /* copies next token or "token" into sa and sets s & l appropriately */ |
| 1160 | /* for continuing the search */ |
| 1161 | { |
| 1162 | char *cp, *cpafter, *cpnext; |
| 1163 | |
| 1164 | if (!*l || !**s) return; |
| 1165 | if (**s == '"') { |
| 1166 | (*s)++; (*l)--; |
| 1167 | cp = *s; cpnext = cp + *l; cpafter = cpnext; |
| 1168 | while (cp < cpafter) { |
| 1169 | if (*cp == '"') { |
| 1170 | break; |
| 1171 | } |
| 1172 | cp++; |
| 1173 | } |
| 1174 | cpnext = cp; |
| 1175 | } else { |
| 1176 | cp = *s; cpnext = cp + *l; cpafter = cpnext; |
| 1177 | while (cp < cpafter) { |
| 1178 | if (*cp == ' ' || *cp == '\t' || *cp == '\n' || *cp == ';') { |
| 1179 | break; |
| 1180 | } |
| 1181 | cp++; |
| 1182 | } |
| 1183 | cpnext = cp; |
| 1184 | } |
| 1185 | if (!stralloc_copyb(sa,*s,cp - *s)) die_nomem(); |
| 1186 | *l = cpafter - cpnext; /* always >= 0 */ |
| 1187 | *s = cpnext; |
| 1188 | return; |
| 1189 | } |
| 1190 | |
| 1191 | void decode_mime_type(char *s,unsigned int l,unsigned int flagmime) |
| 1192 | { |
| 1193 | char *st; |
| 1194 | unsigned int r,lt; |
| 1195 | if (!flagmime || !l) { /* treat non-MIME as plain text */ |
| 1196 | mime_current->mimetype = MIME_TEXT_PLAIN; |
| 1197 | if (!stralloc_copys(&curcharset,charset)) die_nomem(); |
| 1198 | /* should be us-ascii, but this is very likely better */ |
| 1199 | return; |
| 1200 | } |
| 1201 | r = MIME_APPLICATION_OCTETSTREAM; |
| 1202 | while (l && (*s == ' ' || *s == '\t')) { s++; l--; } /* skip LWSP */ |
| 1203 | mime_getarg(&(mime_current->ctype),&s,&l); |
| 1204 | st = mime_current->ctype.s; |
| 1205 | lt = mime_current->ctype.len; |
| 1206 | if (case_startb(st,lt,"text")) { /* text types */ |
| 1207 | r = MIME_TEXT; st+= 4; lt-= 4; |
| 1208 | if (case_startb(st,lt,"/plain")) { |
| 1209 | r = MIME_TEXT_PLAIN; st+= 6; lt-= 6; |
| 1210 | } else if (case_startb(st,lt,"/html")) { |
| 1211 | r = MIME_TEXT_HTML; st+= 5; lt-= 5; |
| 1212 | } else if (case_startb(st,lt,"/enriched")) { |
| 1213 | r = MIME_TEXT_ENRICHED; st+= 9; lt-= 9; |
| 1214 | } else if (case_startb(st,lt,"/x-vcard")) { |
| 1215 | r = MIME_TEXT_ENRICHED; st+= 8; lt-= 8; |
| 1216 | } |
| 1217 | } else if (case_startb(st,lt,"multipart")) { /* multipart types */ |
| 1218 | r = MIME_MULTI; st += 9; lt-= 9; |
| 1219 | if (case_startb(st,lt,"/alternative")) { |
| 1220 | r = MIME_MULTI_ALTERNATIVE; st+= 12; lt-= 12; |
| 1221 | } else if (case_startb(st,lt,"/mixed")) { |
| 1222 | r = MIME_MULTI_MIXED; st+= 6; lt-= 6; |
| 1223 | } else if (case_startb(st,lt,"/digest")) { |
| 1224 | r = MIME_MULTI_DIGEST; st+= 7; lt-= 7; |
| 1225 | } else if (case_startb(st,lt,"/signed")) { |
| 1226 | r = MIME_MULTI_SIGNED; st+= 7; lt-= 7; |
| 1227 | } |
| 1228 | } else if (case_startb(st,lt,"message")) { /* message types */ |
| 1229 | r = MIME_MESSAGE; st += 7; lt -= 7; |
| 1230 | if (case_startb(st,lt,"/rfc822")) { |
| 1231 | r = MIME_MESSAGE_RFC822; st+= 7; lt-= 7; |
| 1232 | } |
| 1233 | } |
| 1234 | mime_current->mimetype = r; |
| 1235 | while (l) { |
| 1236 | while (l && (*s == ' ' || *s == '\t' || *s == ';' || *s == '\n')) { |
| 1237 | s++; l--; } /* skip ;LWSP */ |
| 1238 | if (case_startb(s,l,"boundary=")) { |
| 1239 | s += 9; l-= 9; |
| 1240 | mime_getarg(&(mime_current->boundary),&s,&l); |
| 1241 | } else if (case_startb(s,l,"charset=")) { |
| 1242 | s += 8; l-= 8; |
| 1243 | mime_getarg(&(mime_current->charset),&s,&l); |
| 1244 | cs = decode_charset(mime_current->charset.s, |
| 1245 | mime_current->charset.len); |
| 1246 | if (cs == CS_BAD) cs = csbase; /* keep base cs */ |
| 1247 | else |
| 1248 | if (!stralloc_copy(&curcharset,&mime_current->charset)) die_nomem(); |
| 1249 | } else { /* skip non LWSP */ |
| 1250 | for (;;) { |
| 1251 | if (!l) break; |
| 1252 | if (*s == '"') { |
| 1253 | s++, l--; |
| 1254 | while (l && *s != '"') { s++, l--; } |
| 1255 | if (l) { s++, l--; } |
| 1256 | break; |
| 1257 | } else { |
| 1258 | if (!l || *s == ' ' || *s == '\t' || *s == '\n') break; |
| 1259 | s++; l--; |
| 1260 | } |
| 1261 | } |
| 1262 | } |
| 1263 | } |
| 1264 | return; |
| 1265 | } |
| 1266 | |
| 1267 | void decode_transfer_encoding(register char *s,register unsigned int l) |
| 1268 | { |
| 1269 | unsigned int r; |
| 1270 | mime_current->ctenc = CTENC_NONE; |
| 1271 | if (!l || (mime_current->mimetype & MIME_MULTI)) return; |
| 1272 | /* base64/QP ignored for multipart */ |
| 1273 | r = CTENC_NONE; |
| 1274 | while (l && (*s == ' ' || *s == '\t')) { s++; l--; } /* skip LWSP */ |
| 1275 | if (case_startb(s,l,"quoted-printable")) { |
| 1276 | r = CTENC_QP; |
| 1277 | } else if (case_startb(s,l,"base64")) { |
| 1278 | r = CTENC_BASE64; |
| 1279 | } |
| 1280 | mime_current->ctenc = r; |
| 1281 | return; |
| 1282 | } |
| 1283 | |
| 1284 | int check_boundary() |
| 1285 | /* return 0 if no boundary, 1 if start, 2 if end */ |
| 1286 | { |
| 1287 | mime_info *tmp; |
| 1288 | |
| 1289 | if (*line.s != '-' || line.s[1] != '-') return 0; |
| 1290 | tmp = mime_current; |
| 1291 | while (tmp) { |
| 1292 | if (tmp->boundary.len) { |
| 1293 | if (line.len > tmp->boundary.len + 2 && |
| 1294 | !case_diffb(line.s+2,tmp->boundary.len,tmp->boundary.s)) { |
| 1295 | if (line.s[tmp->boundary.len + 2] == '-' && |
| 1296 | line.s[tmp->boundary.len + 3] == '-') { /* end */ |
| 1297 | mime_current = tmp; |
| 1298 | clear_mime(); |
| 1299 | return 2; |
| 1300 | |
| 1301 | } else { /* start */ |
| 1302 | mime_current = tmp; |
| 1303 | new_mime(); |
| 1304 | return 1; |
| 1305 | } |
| 1306 | } |
| 1307 | } |
| 1308 | tmp = tmp->previous; |
| 1309 | } |
| 1310 | if (!stralloc_copys(&curcharset,charset)) die_nomem(); |
| 1311 | /* suprtfluous since header done by now */ |
| 1312 | cs = csbase; |
| 1313 | return 0; |
| 1314 | } |
| 1315 | |
| 1316 | void start_message_page(struct msginfo *infop) |
| 1317 | /* header etc for message. Delayed to collect subject so that we can put */ |
| 1318 | /* that in TITLE. This in turn needed for good looking robot index. */ |
| 1319 | /* Yep, not pretty, but it works and it's abhorrent to seek()/rewind */ |
| 1320 | /* and another hack: it's hard to mix charsets within a doc. So, we disp */ |
| 1321 | /* messages entirely in the charset of the message. This is ok, since */ |
| 1322 | /* headers will be us-ascii or have encoded segments usually matching */ |
| 1323 | /* the charset in the message. Of course, we should be able to used e.g. */ |
| 1324 | /* <DIV charset=iso-2022-jp> with internal resources as well as internal */ |
| 1325 | /* ones. One might make other-charset messages external resources as well*/ |
| 1326 | /* Now, the problem is that we need to "preview" MIME info _before_ */ |
| 1327 | /* seeing the start boundary. */ |
| 1328 | { |
| 1329 | if (!stralloc_copyb(&decline,strnum,fmt_ulong(strnum,infop->target))) |
| 1330 | die_nomem(); |
| 1331 | if (!stralloc_cats(&decline,":")) die_nomem(); |
| 1332 | if (!stralloc_0(&decline)) die_nomem(); |
| 1333 | decodeHDR(hdr[HDR_SUBJECT - 1].s,hdr[HDR_SUBJECT - 1].len,&line,"",FATAL); |
| 1334 | if (!mime_current) |
| 1335 | new_mime(); /* allocate */ |
| 1336 | else |
| 1337 | clear_mime(); |
| 1338 | decode_mime_type(hdr[HDR_CT - 1].s,hdr[HDR_CT - 1].len, |
| 1339 | hdr[HDR_VERSION - 1].len); |
| 1340 | html_header(decline.s,line.s,line.len - 1, |
| 1341 | "msgbody",SPC_BASE); |
| 1342 | msglinks(infop); |
| 1343 | oputs("<DIV class=message>\n"); |
| 1344 | } |
| 1345 | |
| 1346 | void show_part(struct msginfo *infop,int flagshowheaders, |
| 1347 | int flagskip,int flagstartseen) |
| 1348 | /* if flagshowheaders we display headers, otherwise not */ |
| 1349 | /* if flagstartseen we've already see the start boundary for this part, */ |
| 1350 | /* if not we'll ignore what's there up to it */ |
| 1351 | /* if flagskip we skip this part */ |
| 1352 | { |
| 1353 | char *cp; |
| 1354 | int flaginheader; |
| 1355 | int whatheader; |
| 1356 | int flaggoodfield; |
| 1357 | int flaghtml; |
| 1358 | int btype,i; |
| 1359 | unsigned int colpos,l,pos; |
| 1360 | char linetype; |
| 1361 | |
| 1362 | flaginheader = 1; |
| 1363 | for (i = 0; i < NO_HDRS; i++) hdr[i].len = 0; |
| 1364 | flaggoodfield = 1; |
| 1365 | match = 1; |
| 1366 | recursion_level++; /* one up */ |
| 1367 | for (;;) { |
| 1368 | if (!match) return; |
| 1369 | if (getln(&ssin,&line,&match,'\n') == -1) |
| 1370 | strerr_die4sys(111,FATAL,ERR_READ,fn.s,": "); |
| 1371 | if (!match) return; |
| 1372 | if ((btype = check_boundary())) { |
| 1373 | if (flagpre) { |
| 1374 | oputs("</PRE>"); |
| 1375 | toggle_flagpre(0); |
| 1376 | } |
| 1377 | if (mime_current->level < recursion_level) { |
| 1378 | return; |
| 1379 | } |
| 1380 | if (btype == 1) { |
| 1381 | flagstartseen = 1; |
| 1382 | flaggoodfield = 1; |
| 1383 | flaginheader = 1; |
| 1384 | } else |
| 1385 | flagstartseen = 0; |
| 1386 | continue; |
| 1387 | } |
| 1388 | if (!flagstartseen) continue; /* skip to start */ |
| 1389 | if (flaginheader) { |
| 1390 | if (line.len == 1) { |
| 1391 | if (flagshowheaders) { /* rfc822hdr only */ |
| 1392 | if (flagtoplevel) |
| 1393 | start_message_page(infop); /* so we can put subj in TITLE */ |
| 1394 | oputs("<DIV class=rfc822hdr><HR>\n"); |
| 1395 | for (i = 0; i < NO_HDRS; i++) { |
| 1396 | if (!hdr[i].len || !headers_shown[i]) continue; |
| 1397 | if (i == HDR_SUBJECT - 1 && flagtoplevel) |
| 1398 | oputs("<SPAN class=subject>"); |
| 1399 | oputs("<EM>"); |
| 1400 | oputs(constmap_get(&headermap,i + 1)); |
| 1401 | oputs(":</EM>"); |
| 1402 | decodeHDR(hdr[i].s,hdr[i].len,&line,"",FATAL); |
| 1403 | if (i == HDR_SUBJECT - 1 && flagtoplevel) { |
| 1404 | oputs("<A class=relk href=\"mailto:"); |
| 1405 | oputs(local); |
| 1406 | oput("@",1); |
| 1407 | oputs(host); |
| 1408 | oputs("?subject="); |
| 1409 | urlencode_put(line.s + 1,line.len - 2); |
| 1410 | oputs("\">"); |
| 1411 | } |
| 1412 | if (flagobscure && i == HDR_FROM - 1) { |
| 1413 | oputs(" "); |
| 1414 | decodeHDR(cp,author_name(&cp,line.s,line.len),&decline,"",FATAL); |
| 1415 | htmlencode_put(decline.s,decline.len); |
| 1416 | } else { |
| 1417 | decodeHDR(hdr[i].s,hdr[i].len,&decline,"",FATAL); |
| 1418 | htmlencode_put(decline.s,decline.len - 1); |
| 1419 | } |
| 1420 | if (i == HDR_SUBJECT - 1 && flagtoplevel) |
| 1421 | oputs("</A></SPAN>"); |
| 1422 | oputs("\n<BR>"); |
| 1423 | } |
| 1424 | oputs("</DIV>\n"); |
| 1425 | } |
| 1426 | flaginheader = 0; |
| 1427 | flagtoplevel = 0; |
| 1428 | flaggoodfield = 1; |
| 1429 | flaghtml = 0; |
| 1430 | if (!flagmime) |
| 1431 | flagmime = hdr[HDR_VERSION - 1].len; /* MIME-Version header */ |
| 1432 | decode_mime_type(hdr[HDR_CT - 1].s,hdr[HDR_CT - 1].len,flagmime); |
| 1433 | decode_transfer_encoding(hdr[HDR_CTENC - 1].s,hdr[HDR_CTENC - 1].len); |
| 1434 | content.len = 0; encoding.len = 0; |
| 1435 | switch (mime_current->mimetype) { |
| 1436 | case MIME_MULTI_SIGNED: |
| 1437 | case MIME_MULTI_MIXED: |
| 1438 | case MIME_MULTI_ALTERNATIVE: |
| 1439 | case MIME_MULTI_DIGEST: |
| 1440 | show_part(infop,0,0,0); |
| 1441 | recursion_level--; |
| 1442 | flagstartseen = 0; |
| 1443 | flaginheader = 1; |
| 1444 | continue; |
| 1445 | case MIME_MESSAGE_RFC822: |
| 1446 | oputs("\n<PRE>"); |
| 1447 | toggle_flagpre(1); |
| 1448 | flagshowheaders = 1; |
| 1449 | flaginheader = 1; |
| 1450 | flagmime = 0; /* need new MIME-Version header */ |
| 1451 | continue; |
| 1452 | case MIME_TEXT_HTML: |
| 1453 | if (flagshowhtml) { |
| 1454 | oputs("<HR>\n"); |
| 1455 | flaghtml = 1; |
| 1456 | } else { |
| 1457 | oputs("<strong>[\""); |
| 1458 | oput(mime_current->ctype.s,mime_current->ctype.len); |
| 1459 | oputs("\" not shown]</strong>\n"); |
| 1460 | flaggoodfield = 0; /* hide */ |
| 1461 | } |
| 1462 | continue; |
| 1463 | case MIME_TEXT_PLAIN: |
| 1464 | case MIME_TEXT: /* in honor of Phil using "text" on */ |
| 1465 | case MIME_NONE: /* the qmail list and rfc2045:5.2 */ |
| 1466 | oputs("<HR>\n<PRE>\n"); |
| 1467 | toggle_flagpre(1); |
| 1468 | continue; |
| 1469 | case MIME_TEXT_VCARD: |
| 1470 | default: /* application/octetstream...*/ |
| 1471 | oputs("<HR><strong>[\""); |
| 1472 | oput(mime_current->ctype.s,mime_current->ctype.len); |
| 1473 | oputs("\" not shown]</strong>\n"); |
| 1474 | flaggoodfield = 0; /* hide */ |
| 1475 | continue; |
| 1476 | } |
| 1477 | } else if (line.s[0] != ' ' && line.s[0] != '\t') { |
| 1478 | linetype = ' '; |
| 1479 | flaggoodfield = 0; |
| 1480 | colpos = byte_chr(line.s,line.len,':'); |
| 1481 | if ((whatheader = constmap_index(&headermap,line.s,colpos))) { |
| 1482 | flaggoodfield = 1; |
| 1483 | if (!stralloc_copyb(&hdr[whatheader - 1],line.s + colpos + 1, |
| 1484 | line.len - colpos - 1)) die_nomem(); |
| 1485 | } |
| 1486 | } else { |
| 1487 | if (whatheader) |
| 1488 | if (!stralloc_catb(&hdr[whatheader - 1],line.s,line.len)) |
| 1489 | die_nomem(); |
| 1490 | } |
| 1491 | } else { |
| 1492 | if (flaggoodfield) { |
| 1493 | if (mime_current->ctenc) { |
| 1494 | if (!stralloc_copy(&decline,&line)) die_nomem(); |
| 1495 | line.len = 0; |
| 1496 | if (mime_current->ctenc == CTENC_QP) |
| 1497 | decodeQ(decline.s,decline.len,&line); |
| 1498 | else |
| 1499 | decodeB(decline.s,decline.len,&line); |
| 1500 | } |
| 1501 | if (flaghtml) |
| 1502 | oput(line.s,line.len); |
| 1503 | else { |
| 1504 | htmlencode_put(line.s,line.len); /* body */ |
| 1505 | } |
| 1506 | } |
| 1507 | } |
| 1508 | } |
| 1509 | } |
| 1510 | |
| 1511 | int show_message(struct msginfo *infop) |
| 1512 | { |
| 1513 | char *psz; |
| 1514 | |
| 1515 | if(!stralloc_copys(&headers,(char *) headers_used)) die_nomem(); |
| 1516 | if (!stralloc_0(&headers)) die_nomem(); |
| 1517 | psz = headers.s; |
| 1518 | while (*psz) { |
| 1519 | if (*psz == '\\') *psz = '\0'; |
| 1520 | ++psz; |
| 1521 | } |
| 1522 | if (!constmap_init(&headermap,headers.s,headers.len,0)) |
| 1523 | die_nomem(); |
| 1524 | |
| 1525 | (void) makefn(&fn,ITEM_MESSAGE,msginfo.target,""); |
| 1526 | if ((fd = open_read(fn.s)) == -1) |
| 1527 | if (errno == error_noent) |
| 1528 | return 0; |
| 1529 | else |
| 1530 | strerr_die4sys(111,FATAL,ERR_OPEN,fn.s,": "); |
| 1531 | substdio_fdbuf(&ssin,read,fd,inbuf,sizeof(inbuf)); |
| 1532 | toggle_flagpre(0); |
| 1533 | recursion_level = 0; /* recursion level for show_part */ |
| 1534 | flagmime = 0; /* no active mime */ |
| 1535 | flagtoplevel = 1; /* top message/rfc822 get special rx */ |
| 1536 | new_mime(); /* initiate a MIME info storage slot */ |
| 1537 | |
| 1538 | show_part(infop,1,0,1); /* do real work, including html header etc */ |
| 1539 | if (flagpre) |
| 1540 | oputs("</PRE>\n"); |
| 1541 | close(fd); |
| 1542 | oputs("<HR></DIV>\n"); |
| 1543 | msglinks(infop); |
| 1544 | html_footer(0); |
| 1545 | return 1; |
| 1546 | } |
| 1547 | |
| 1548 | char decode_item(char ch) |
| 1549 | { |
| 1550 | switch (ch) { |
| 1551 | case 'm': return ITEM_MESSAGE; |
| 1552 | case 'a': return ITEM_AUTHOR ; |
| 1553 | case 's': return ITEM_SUBJECT; |
| 1554 | case 'd': return ITEM_DATE ; |
| 1555 | case 'i': return ITEM_INDEX ; |
| 1556 | default: cgierr("Navigation command contains ", |
| 1557 | "illegal item code",""); |
| 1558 | } |
| 1559 | return 0; /* never reached */ |
| 1560 | } |
| 1561 | |
| 1562 | char decode_direction(char ch) |
| 1563 | { |
| 1564 | switch (ch) { |
| 1565 | case 's': return DIRECT_SAME; |
| 1566 | case 'n': return DIRECT_NEXT; |
| 1567 | case 'p': return DIRECT_PREV; |
| 1568 | default: cgierr("Navigation command contains ", |
| 1569 | "illegal direction code",""); |
| 1570 | } |
| 1571 | return 0; /* never reached */ |
| 1572 | } |
| 1573 | |
| 1574 | int decode_cmd(char *s,struct msginfo *infop) |
| 1575 | /* decodes s into infop. Assures that no security problems slip through by */ |
| 1576 | /* checking everything */ |
| 1577 | /* commands xyd:123[:abc]. x what we want, y is the axis, d the direction. */ |
| 1578 | /* 123 is the current message number. abc is a date/subject/author hash, */ |
| 1579 | /* depending on axis, or empty if not available. */ |
| 1580 | /* returns: 0 no command+msgnum. */ |
| 1581 | /* 1 empty or at least cmd + msgnum. */ |
| 1582 | /* Guarantee: Only legal values accepted */ |
| 1583 | { |
| 1584 | register char ch; |
| 1585 | |
| 1586 | infop->source = 0L; |
| 1587 | infop->date = 0L; |
| 1588 | infop->author = (char *)0; |
| 1589 | infop->subject = (char *)0; |
| 1590 | infop->cgiarg = (char *)0; |
| 1591 | |
| 1592 | if (!s || !*s) { /* main index */ |
| 1593 | infop->item = ITEM_DATE; |
| 1594 | infop->axis = ITEM_DATE; |
| 1595 | infop->direction = DIRECT_SAME; |
| 1596 | latestdate(&msginfo,0); |
| 1597 | infop->target = MAXULONG; |
| 1598 | return 1; |
| 1599 | } |
| 1600 | ch = *(s++); |
| 1601 | if (ch >= '0' && ch <= '9') { /* numeric - simplified cmd: msgnum ... */ |
| 1602 | s--; |
| 1603 | infop->item = ITEM_MESSAGE; |
| 1604 | infop->axis = ITEM_MESSAGE; |
| 1605 | infop->direction = DIRECT_SAME; |
| 1606 | } else { /* what:axis:direction:msgnum ... */ |
| 1607 | infop->item = decode_item(ch); |
| 1608 | ch = *(s++); |
| 1609 | infop->axis = decode_item(ch); |
| 1610 | ch = *(s++); |
| 1611 | infop->direction = decode_direction(ch); |
| 1612 | if (*(s++) != ':') return 0; |
| 1613 | } |
| 1614 | s+= scan_ulong(s,&(infop->source)); |
| 1615 | if (*(s++) != ':') return 0; |
| 1616 | if (*s >= '0' && *s <= '9') { /* numeric nav hint [date] */ |
| 1617 | s+= scan_ulong(s,&(infop->date)); |
| 1618 | if (!*s++) return 1; /* skip any char - should be ':' unless NUL */ |
| 1619 | } |
| 1620 | if (checkhash(s)) { /* Ignore if illegal rather than complaining*/ |
| 1621 | if (!stralloc_copyb(&charg,s,HASHLEN)) die_nomem(); |
| 1622 | if (!stralloc_0(&charg)) die_nomem(); |
| 1623 | infop->cgiarg = charg.s; |
| 1624 | } |
| 1625 | return 1; |
| 1626 | } |
| 1627 | |
| 1628 | int msg2hash(struct msginfo *infop) |
| 1629 | { |
| 1630 | unsigned int pos; |
| 1631 | unsigned long tmpmsg; |
| 1632 | |
| 1633 | if (!infop->source) die_prog("source is 0 in msg2hash"); |
| 1634 | (void) makefn(&fn,ITEM_INDEX,infop->source,""); |
| 1635 | if ((fd = open_read(fn.s)) == -1) { |
| 1636 | if (errno == error_noent) |
| 1637 | return 0; |
| 1638 | else |
| 1639 | strerr_die4sys(111,FATAL,ERR_OPEN,fn.s,": "); |
| 1640 | } |
| 1641 | substdio_fdbuf(&ssin,read,fd,inbuf,sizeof(inbuf)); |
| 1642 | for (;;) { |
| 1643 | if (getln(&ssin,&line,&match,'\n') == -1) |
| 1644 | strerr_die3sys(111,FATAL,ERR_READ,"index: "); |
| 1645 | if (!match) |
| 1646 | return 0; /* didn't find message */ |
| 1647 | if (*line.s == '\t') continue; /* author line */ |
| 1648 | pos = scan_ulong(line.s,&tmpmsg); |
| 1649 | if (tmpmsg == infop->source) { |
| 1650 | if (line.s[pos++] != ':' || line.s[pos++] != ' ') |
| 1651 | strerr_die3x(100,ERR_SYNTAX,fn.s,": missing subject separator"); |
| 1652 | if (line.len < HASHLEN + pos) |
| 1653 | strerr_die3x(100,ERR_SYNTAX,fn.s,": missing subject hash"); |
| 1654 | if (!stralloc_copyb(&subject,line.s+pos,HASHLEN)) die_nomem(); |
| 1655 | if (!stralloc_0(&subject)) die_nomem(); |
| 1656 | infop->subject = subject.s; |
| 1657 | if (getln(&ssin,&line,&match,'\n') == -1) |
| 1658 | strerr_die3sys(111,FATAL,ERR_READ,"index: "); |
| 1659 | if (!match) |
| 1660 | strerr_die3x(100,ERR_SYNTAX,fn.s, |
| 1661 | ": author info missing. Truncated?"); |
| 1662 | pos = byte_chr(line.s,line.len,';'); |
| 1663 | if (pos == line.len) |
| 1664 | strerr_die3x(100,ERR_SYNTAX,fn.s,"missing ';' after date"); |
| 1665 | if (pos > 1) |
| 1666 | infop->date = date2yyyymm(line.s+1); /* ';' marks end ok */ |
| 1667 | pos++; |
| 1668 | if (line.len < HASHLEN + pos) |
| 1669 | strerr_die3x(100,ERR_SYNTAX,fn.s,": missing author hash"); |
| 1670 | if (!stralloc_copyb(&author,line.s+pos,HASHLEN)) die_nomem(); |
| 1671 | if (!stralloc_0(&author)) die_nomem(); |
| 1672 | infop->author = author.s; |
| 1673 | close(fd); |
| 1674 | return 1; /* success */ |
| 1675 | } |
| 1676 | } |
| 1677 | close(fd); |
| 1678 | return 0; /* failed to match */ |
| 1679 | } |
| 1680 | |
| 1681 | void setmsg(struct msginfo *infop) |
| 1682 | /* Reads the file corresponding to infop->axis and assumes fn.s is set */ |
| 1683 | /* correctly for this. Sets up a msgnav structure and links it in */ |
| 1684 | /* correction for axis=author/subject. For axis=date it supports also */ |
| 1685 | /* direction=DIRECT_FIRST which will return the first message of the */ |
| 1686 | /* first thread in the date file. DIRECT_LAST is not supported. */ |
| 1687 | /* DIRECT_FIRST is supported ONLY for date. */ |
| 1688 | { |
| 1689 | if (infop->direction == DIRECT_SAME) { |
| 1690 | infop->target = infop->source; |
| 1691 | return; |
| 1692 | } |
| 1693 | if ((fd = open_read(fn.s)) == -1) { |
| 1694 | if (errno == error_noent) |
| 1695 | strerr_die4x(100,FATAL,ERR_OPEN,fn.s, |
| 1696 | " in listmsgs. Rerun ezmlm-archive!"); |
| 1697 | else |
| 1698 | strerr_die4sys(111,FATAL,ERR_OPEN,fn.s,": "); |
| 1699 | } |
| 1700 | substdio_fdbuf(&ssin,read,fd,inbuf,sizeof(inbuf)); |
| 1701 | if (infop->source != ITEM_DATE) { |
| 1702 | if (getln(&ssin,&line,&match,'\n') == -1) /* first line */ |
| 1703 | strerr_die4sys(111,FATAL,ERR_READ,fn.s,": "); |
| 1704 | if (!match) |
| 1705 | strerr_die3x(100,ERR_SYNTAX,fn.s,": first line missing"); |
| 1706 | } |
| 1707 | msgnav[3] = 0L; /* next */ |
| 1708 | msgnav[4] = 0L; /* after */ |
| 1709 | infop->target = 0L; |
| 1710 | for (;;) { |
| 1711 | if (getln(&ssin,&line,&match,'\n') == -1) |
| 1712 | strerr_die4sys(111,FATAL,ERR_READ,fn.s,": "); |
| 1713 | if (!match) break; |
| 1714 | msgnav[0] = msgnav[1]; |
| 1715 | msgnav[1] = msgnav[2]; |
| 1716 | (void) scan_ulong(line.s,&(msgnav[2])); |
| 1717 | if (infop->direction == DIRECT_FIRST) break; |
| 1718 | if (msgnav[2] == infop->source) { |
| 1719 | if (getln(&ssin,&line,&match,'\n') == -1) |
| 1720 | strerr_die4sys(111,FATAL,ERR_READ,fn.s,": "); |
| 1721 | if (!match) break; |
| 1722 | (void) scan_ulong(line.s,&(msgnav[3])); |
| 1723 | if (getln(&ssin,&line,&match,'\n') == -1) |
| 1724 | strerr_die4sys(111,FATAL,ERR_READ,fn.s,": "); |
| 1725 | if (!match) break; |
| 1726 | (void) scan_ulong(line.s,&(msgnav[4])); |
| 1727 | break; |
| 1728 | } |
| 1729 | } |
| 1730 | close(fd); |
| 1731 | switch (infop->axis) { |
| 1732 | case ITEM_AUTHOR: |
| 1733 | infop->authnav = msgnav + 2 + infop->direction; |
| 1734 | infop->target = *(infop->authnav); |
| 1735 | infop->subject = (char *)0; /* what we know is not for this msg */ |
| 1736 | infop->date = 0; |
| 1737 | break; |
| 1738 | case ITEM_SUBJECT: |
| 1739 | infop->subjnav = msgnav + 2 + infop->direction; |
| 1740 | infop->target = *(infop->subjnav); |
| 1741 | infop->author = (char *)0; /* what we know is not for this msg */ |
| 1742 | infop->date = 0; |
| 1743 | break; |
| 1744 | case ITEM_DATE: |
| 1745 | infop->target = msgnav[2]; |
| 1746 | infop->subject = (char *)0; /* what we know is not for this msg */ |
| 1747 | infop->author = (char *)0; /* what we know is not for this msg */ |
| 1748 | default: |
| 1749 | die_prog("Bad item in setmsg"); |
| 1750 | } |
| 1751 | return; |
| 1752 | } |
| 1753 | |
| 1754 | void auth2msg(struct msginfo *infop) |
| 1755 | { |
| 1756 | if (!infop->author) die_prog("no such author in authmsg"); |
| 1757 | if (!makefn(&fn,ITEM_AUTHOR,0L,infop->author)) die_prog("auth2msg"); |
| 1758 | setmsg(infop); |
| 1759 | } |
| 1760 | |
| 1761 | void subj2msg(struct msginfo *infop) |
| 1762 | { |
| 1763 | if (!infop->subject) die_prog("no such subject in subj2msg"); |
| 1764 | if (!makefn(&fn,ITEM_SUBJECT,0L,infop->subject)) die_prog("subj2msg"); |
| 1765 | setmsg(infop); |
| 1766 | } |
| 1767 | |
| 1768 | void date2msg(struct msginfo *infop) |
| 1769 | { |
| 1770 | (void) makefn(&fn,ITEM_DATE,infop->date,""); |
| 1771 | setmsg(infop); |
| 1772 | } |
| 1773 | |
| 1774 | void findlastmsg(struct msginfo *infop) |
| 1775 | { |
| 1776 | if (!getconf_line(&line,"num",dir,0,FATAL)) |
| 1777 | cgierr("Sorry, there are no messages in the archive","",""); |
| 1778 | if (!stralloc_0(&line)) die_nomem(); |
| 1779 | (void) scan_ulong(line.s,&(infop->target)); |
| 1780 | } |
| 1781 | |
| 1782 | int do_cmd(struct msginfo *infop) |
| 1783 | /* interprets msginfo to create msginfo. Upon return, msginfo can be trusted */ |
| 1784 | /* to have all info needed, and that all info is correct. There may be more */ |
| 1785 | /* info than needed. This can be used to build more specific links. NOTE: */ |
| 1786 | /* there is no guarantee that a message meeting the criteria actually exists*/ |
| 1787 | { |
| 1788 | infop->target = infop->source; |
| 1789 | |
| 1790 | switch (infop->item) { |
| 1791 | case ITEM_MESSAGE: /* we want to get a message back */ |
| 1792 | { |
| 1793 | switch (infop->axis) { |
| 1794 | case ITEM_MESSAGE: |
| 1795 | if (infop->direction == DIRECT_SAME) |
| 1796 | break; |
| 1797 | else if (infop->direction == DIRECT_NEXT) |
| 1798 | (infop->target)++; |
| 1799 | else { /* previous */ |
| 1800 | cache = 2; |
| 1801 | if (infop->target >= 2) |
| 1802 | (infop->target)--; |
| 1803 | else |
| 1804 | infop->target = 1; |
| 1805 | } |
| 1806 | break; |
| 1807 | case ITEM_AUTHOR: |
| 1808 | infop->author = infop->cgiarg; |
| 1809 | if (!infop->author) /* we don't know author hash */ |
| 1810 | if (!msg2hash(infop)) return 0; |
| 1811 | auth2msg(infop); |
| 1812 | break; |
| 1813 | case ITEM_SUBJECT: |
| 1814 | infop->subject = infop->cgiarg; |
| 1815 | if (!infop->subject) /* we don't know Subject hash */ |
| 1816 | if (!msg2hash(infop)) return 0; |
| 1817 | subj2msg(infop); |
| 1818 | break; |
| 1819 | } |
| 1820 | break; |
| 1821 | } |
| 1822 | case ITEM_AUTHOR: |
| 1823 | switch (infop->axis) { |
| 1824 | case ITEM_MESSAGE: |
| 1825 | if (!infop->author) |
| 1826 | if (!msg2hash(infop)) return 0; |
| 1827 | break; |
| 1828 | case ITEM_AUTHOR: |
| 1829 | infop->author = infop->cgiarg; |
| 1830 | if (!infop->author) |
| 1831 | if (!msg2hash(infop)) return 0; |
| 1832 | auth2msg(infop); |
| 1833 | break; |
| 1834 | case ITEM_SUBJECT: |
| 1835 | infop->subject = infop->cgiarg; |
| 1836 | if (!infop->subject) /* we don't know Subject hash */ |
| 1837 | if (!msg2hash(infop)) return 0; |
| 1838 | subj2msg(infop); |
| 1839 | break; |
| 1840 | } |
| 1841 | break; |
| 1842 | case ITEM_SUBJECT: |
| 1843 | switch (infop->axis) { |
| 1844 | case ITEM_MESSAGE: |
| 1845 | if (!msg2hash(infop)) return 0; |
| 1846 | break; |
| 1847 | case ITEM_AUTHOR: |
| 1848 | infop->author = infop->cgiarg; |
| 1849 | if (!infop->author) |
| 1850 | if (!msg2hash(infop)) return 0; |
| 1851 | auth2msg(infop); |
| 1852 | break; |
| 1853 | case ITEM_SUBJECT: |
| 1854 | infop->subject = infop->cgiarg; |
| 1855 | if (!infop->subject) /* we don't know Subject hash */ |
| 1856 | if (!msg2hash(infop)) return 0; |
| 1857 | subj2msg(infop); |
| 1858 | break; |
| 1859 | } |
| 1860 | break; |
| 1861 | case ITEM_DATE: /* want a date reference */ |
| 1862 | switch (infop->axis) { |
| 1863 | case ITEM_MESSAGE: |
| 1864 | case ITEM_AUTHOR: |
| 1865 | case ITEM_SUBJECT: |
| 1866 | case ITEM_DATE: |
| 1867 | if (!infop->date && infop->source) |
| 1868 | if (!msg2hash(infop)) return 0; |
| 1869 | getdate(infop,0); |
| 1870 | break; |
| 1871 | } |
| 1872 | break; |
| 1873 | case ITEM_INDEX: /* ignore direction etc - only for index */ |
| 1874 | if (!infop->target) |
| 1875 | infop->target = infop->source; |
| 1876 | if (!infop->target) |
| 1877 | findlastmsg(infop); |
| 1878 | break; |
| 1879 | } |
| 1880 | return 1; |
| 1881 | } |
| 1882 | |
| 1883 | void list_lists() |
| 1884 | { |
| 1885 | unsigned long lno; |
| 1886 | cache = 2; |
| 1887 | flagrobot = 2; |
| 1888 | html_header("Robot index of lists",0,0,0,0); |
| 1889 | for (;;) { |
| 1890 | if (getln(&ssin,&cfline,&match,'\n') == -1) /* read line */ |
| 1891 | strerr_die4sys(111,FATAL,ERR_READ,fn.s,": "); |
| 1892 | if (!match) |
| 1893 | break; |
| 1894 | if (cfline.s[0] == '#') continue; /* skip comment */ |
| 1895 | cfline.s[cfline.len - 1] = '\0'; /* so all are sz */ |
| 1896 | (void) scan_ulong(cfline.s,&lno); /* listno for line */ |
| 1897 | if (lno) { /* don't expose default list */ |
| 1898 | oputs("<A href=\""); |
| 1899 | oput(strnum,fmt_ulong(strnum,lno)); |
| 1900 | oputs("/index\">[link]</a>\n"); |
| 1901 | } |
| 1902 | } |
| 1903 | html_footer(0); |
| 1904 | } |
| 1905 | |
| 1906 | void list_list(unsigned long listno) |
| 1907 | /* Make one link [for list_set()] per set of 100 archive messages. */ |
| 1908 | /* Assumption: Any directory DIR/archive/xxx where 'xxx' is a numeric,*/ |
| 1909 | /* is part of the list archive and has in it an index file and one */ |
| 1910 | /* or more messages. */ |
| 1911 | { |
| 1912 | DIR *archivedir; |
| 1913 | direntry *d; |
| 1914 | unsigned long msgset; |
| 1915 | |
| 1916 | flagrobot = 2; |
| 1917 | strnum[fmt_ulong(strnum,listno)] = '\0'; |
| 1918 | archivedir = opendir("archive/"); |
| 1919 | if (!archivedir) |
| 1920 | if (errno != error_noent) |
| 1921 | strerr_die4sys(111,FATAL,ERR_OPEN,dir,"/archive: "); |
| 1922 | else |
| 1923 | strerr_die4sys(100,FATAL,ERR_OPEN,dir,"/archive: "); |
| 1924 | |
| 1925 | cache = 1; |
| 1926 | html_header("Robot index for message sets in list",0,0,0,0); |
| 1927 | |
| 1928 | while ((d = readdir(archivedir))) { |
| 1929 | if (d->d_name[scan_ulong(d->d_name,&msgset)]) |
| 1930 | continue; /* not numeric */ |
| 1931 | oputs("<a href=\"../"); /* from /ezcgi/0/index to /ezcgi/listno/index*/ |
| 1932 | oputs(strnum); |
| 1933 | oputs("/index/"); |
| 1934 | oputs(d->d_name); |
| 1935 | oputs("\">[link]</a>\n"); |
| 1936 | } |
| 1937 | closedir(archivedir); |
| 1938 | html_footer(0); |
| 1939 | } |
| 1940 | |
| 1941 | void list_set(unsigned long listno,unsigned long msgset) |
| 1942 | { |
| 1943 | unsigned int msgfirst,msgmax; |
| 1944 | unsigned long lastset; |
| 1945 | |
| 1946 | flagrobot = 2; |
| 1947 | findlastmsg(&msginfo); |
| 1948 | if (!stralloc_copys(&line,"<a href=\"../")) die_nomem(); |
| 1949 | if (!stralloc_catb(&line,strnum,fmt_ulong(strnum,msgset))) die_nomem(); |
| 1950 | lastset = msginfo.target / 100; |
| 1951 | cache = 2; |
| 1952 | msgfirst = 0; |
| 1953 | if (!msgset) |
| 1954 | msgfirst = 1; |
| 1955 | msgmax = 99; |
| 1956 | if (msgset > lastset) { /* assure empty list */ |
| 1957 | msgmax = 0; |
| 1958 | msgfirst = 1; |
| 1959 | } else if (msgset == lastset) { |
| 1960 | cache = 0; /* still changing */ |
| 1961 | msgmax = msginfo.target % 100; |
| 1962 | } |
| 1963 | html_header("Robot index for messages in set",0,0,0,0); |
| 1964 | while (msgfirst <= msgmax) { |
| 1965 | oput(line.s,line.len); |
| 1966 | oput(strnum,fmt_uint0(strnum,msgfirst,2)); |
| 1967 | oputs("\">[link]</a>\n"); |
| 1968 | msgfirst++; |
| 1969 | } |
| 1970 | html_footer(0); |
| 1971 | } |
| 1972 | |
| 1973 | /**************** MAY BE SUID ROOT HERE ****************************/ |
| 1974 | void drop_priv(int flagchroot) |
| 1975 | { |
| 1976 | if (!uid) strerr_die2x(100,FATAL,ERR_SUID); /* not as root */ |
| 1977 | if (!euid) { |
| 1978 | if (flagchroot) |
| 1979 | if (chroot(dir) == -1) /* chroot listdir */ |
| 1980 | strerr_die4sys(111,FATAL,"failed to chroot ",dir,": "); |
| 1981 | if (setuid(uid) == -1) /* setuid */ |
| 1982 | strerr_die2sys(111,FATAL,ERR_SETUID); |
| 1983 | } |
| 1984 | euid = (unsigned long) geteuid(); |
| 1985 | if (!euid) strerr_die2x(100,FATAL,ERR_SUID); /* setuid didn't do it*/ |
| 1986 | } |
| 1987 | /*******************************************************************/ |
| 1988 | |
| 1989 | int main(argc,argv) |
| 1990 | int argc; |
| 1991 | char **argv; |
| 1992 | { |
| 1993 | char *cp,*cppath; |
| 1994 | unsigned long listno,thislistno,tmpuid,msgset; |
| 1995 | unsigned long msgnum = 0; |
| 1996 | unsigned long port = 0L; |
| 1997 | unsigned long tmptarget; |
| 1998 | unsigned int pos,l; |
| 1999 | int flagindex = 0; |
| 2000 | int flagchroot = 1; /* chroot listdir if SUID root */ |
| 2001 | int ret; |
| 2002 | char sep; |
| 2003 | |
| 2004 | /******************** we may be SUID ROOT ******************************/ |
| 2005 | uid = (unsigned long) getuid(); /* should be http */ |
| 2006 | euid = (unsigned long) geteuid(); /* chroot only if 0 */ |
| 2007 | |
| 2008 | if (!euid) { |
| 2009 | if ((fd = open_read(EZ_CGIRC)) == -1) /* open config */ |
| 2010 | strerr_die4sys(111,FATAL,ERR_OPEN,EZ_CGIRC,": "); |
| 2011 | } else { |
| 2012 | if ((fd = open_read(EZ_CGIRC_LOC)) == -1) /* open local config */ |
| 2013 | strerr_die4sys(111,FATAL,ERR_OPEN,EZ_CGIRC_LOC,": "); |
| 2014 | } |
| 2015 | |
| 2016 | substdio_fdbuf(&ssin,read,fd,inbuf,sizeof(inbuf)); /* set up buffer */ |
| 2017 | /* ##### tainted info #####*/ |
| 2018 | |
| 2019 | cmd = env_get("QUERY_STRING"); /* get command */ |
| 2020 | cppath = env_get("PATH_INFO"); /* get path_info */ |
| 2021 | |
| 2022 | if (!cppath || !*cppath) { |
| 2023 | if (cmd && *cmd) { |
| 2024 | cmd += scan_ulong(cmd,&thislistno); |
| 2025 | if (*cmd == ':') cmd++; /* allow ':' after ln*/ |
| 2026 | } else |
| 2027 | thislistno = 0L; |
| 2028 | } else { |
| 2029 | cppath++; |
| 2030 | cppath += scan_ulong(cppath,&thislistno); /* this listno */ |
| 2031 | if (!thislistno || *cppath++ == '/') { |
| 2032 | if (str_start(cppath,"index")) { |
| 2033 | cppath += 5; |
| 2034 | flagindex = 1; |
| 2035 | if (!thislistno) { /* list index */ |
| 2036 | drop_priv(0); /* <---- dropping privs */ |
| 2037 | list_lists(); |
| 2038 | close(fd); |
| 2039 | _exit(0); |
| 2040 | } |
| 2041 | } |
| 2042 | } /* rest done per list */ |
| 2043 | } |
| 2044 | |
| 2045 | for (;;) { |
| 2046 | if (getln(&ssin,&cfline,&match,'\n') == -1) /* read line */ |
| 2047 | strerr_die4sys(111,FATAL,ERR_READ,fn.s,": "); |
| 2048 | if (!match) |
| 2049 | break; |
| 2050 | if (*cfline.s == '#' || cfline.len == 1) continue; /* skip comment/blank */ |
| 2051 | cfline.s[cfline.len - 1] = '\0'; /* so all are sz */ |
| 2052 | pos = scan_ulong(cfline.s,&listno); /* listno for line */ |
| 2053 | if (thislistno != listno) continue; |
| 2054 | sep = cfline.s[pos++]; |
| 2055 | if (cfline.s[pos] == '-') { /* no chroot if -uid*/ |
| 2056 | flagchroot = 0; |
| 2057 | pos++; |
| 2058 | } |
| 2059 | pos += scan_ulong(cfline.s+pos,&tmpuid); /* listno for line */ |
| 2060 | if (tmpuid) uid = tmpuid; /* override default */ |
| 2061 | if (!cfline.s[pos++] == sep) |
| 2062 | die_syntax("missing separator after user id"); |
| 2063 | if (cfline.s[pos] != '/') |
| 2064 | die_syntax("dir"); /* absolute path */ |
| 2065 | l = byte_chr(cfline.s + pos, cfline.len - pos,sep); |
| 2066 | if (l == cfline.len - pos) /* listno:path:...*/ |
| 2067 | die_syntax("missing separator after path"); |
| 2068 | dir = cfline.s + pos; |
| 2069 | pos += l; |
| 2070 | cfline.s[pos++] = '\0'; /* .../dir\0 */ |
| 2071 | break; /* do rest after dropping priv */ |
| 2072 | } |
| 2073 | close(fd); /* don't accept uid 0*/ |
| 2074 | if (!dir) { |
| 2075 | drop_priv(0); /* don't trust cgierr. No dir, no chroot */ |
| 2076 | cgierr("list ",ERR_NOEXIST,""); |
| 2077 | } |
| 2078 | if (chdir(dir) == -1) /* chdir listdir */ |
| 2079 | strerr_die4sys(111,FATAL,ERR_SWITCH,dir,": "); |
| 2080 | drop_priv(flagchroot); |
| 2081 | |
| 2082 | /******************************* RELAX **********************************/ |
| 2083 | |
| 2084 | /********************* continue to process config line ******************/ |
| 2085 | |
| 2086 | flagrobot = 0; |
| 2087 | if (cfline.s[pos] == '-') { |
| 2088 | flagobscure = 1; |
| 2089 | pos++; |
| 2090 | } |
| 2091 | local = cfline.s + pos; |
| 2092 | l = byte_chr(cfline.s + pos, cfline.len - pos,sep); /* ... home */ |
| 2093 | if (l < cfline.len - pos) { /* optional */ |
| 2094 | pos += l; |
| 2095 | cfline.s[pos++] = '\0'; |
| 2096 | home = cfline.s + pos; |
| 2097 | l = byte_chr(cfline.s + pos, cfline.len - pos,sep); /* ... charset */ |
| 2098 | if (l < cfline.len - pos) { /* optional */ |
| 2099 | pos += l; |
| 2100 | cfline.s[pos++] = '\0'; |
| 2101 | charset = cfline.s + pos; |
| 2102 | l = byte_chr(cfline.s+pos,cfline.len - pos,sep); /* ... stylesheet */ |
| 2103 | if (l < cfline.len - pos) { /* optional */ |
| 2104 | pos += l; |
| 2105 | cfline.s[pos++] = '\0'; |
| 2106 | stylesheet = cfline.s + pos; |
| 2107 | l = byte_chr(cfline.s+pos,cfline.len-pos,sep); /* ... bannerURL */ |
| 2108 | if (l < cfline.len - pos) { /* optional */ |
| 2109 | pos += l; |
| 2110 | cfline.s[pos++] = '\0'; |
| 2111 | banner = cfline.s + pos; |
| 2112 | } |
| 2113 | } |
| 2114 | } |
| 2115 | } |
| 2116 | if (!charset || !*charset) /* rfc822 default */ |
| 2117 | charset = EZ_CHARSET; |
| 2118 | if (!stralloc_copys(&curcharset,charset)) die_nomem(); |
| 2119 | csbase = decode_charset(curcharset.s,curcharset.len); |
| 2120 | if (csbase == CS_BAD) csbase = CS_NONE; |
| 2121 | cs = csbase; |
| 2122 | pos = + str_rchr(local,'@'); |
| 2123 | if (!local[pos]) |
| 2124 | die_syntax("listaddress lacks '@'"); /* require host */ |
| 2125 | local[pos++] = '\0'; |
| 2126 | host = local + pos; |
| 2127 | |
| 2128 | /********************* Accomodate robots and PATH_INFO ****************/ |
| 2129 | |
| 2130 | if (flagindex) { |
| 2131 | if (*(cppath++) == '/') { /* /2/index/123 */ |
| 2132 | cppath += scan_ulong(cppath,&msgset); |
| 2133 | list_set(thislistno,msgset); |
| 2134 | } else /* /2/index */ |
| 2135 | list_list(thislistno); |
| 2136 | _exit(0); |
| 2137 | } |
| 2138 | |
| 2139 | if (cppath && *cppath) { /* /2/msgnum */ |
| 2140 | flagrobot = 1; /* allow index, but "nofollow" */ |
| 2141 | scan_ulong(cppath,&msgnum); |
| 2142 | } /* dealt with normally */ |
| 2143 | |
| 2144 | /********************* Get info from server on BASE etc ****************/ |
| 2145 | |
| 2146 | if (!stralloc_copys(&base,"<BASE href=\"http://")) die_nomem(); |
| 2147 | cp = env_get("SERVER_PORT"); |
| 2148 | if (cp) { /* port */ |
| 2149 | (void) scan_ulong(cp,&port); |
| 2150 | if ((unsigned int) port == 443) { /* https: */ |
| 2151 | if (!stralloc_copys(&base,"<BASE href=\"https://")) die_nomem(); |
| 2152 | } |
| 2153 | } |
| 2154 | if (port && (unsigned int) port != 80 && (unsigned int) port != 443) { |
| 2155 | if (!stralloc_cats(&base,":")) die_nomem(); |
| 2156 | if (!stralloc_catb(&base,strnum,fmt_ulong(strnum,port))) die_nomem(); |
| 2157 | } |
| 2158 | if (!(cp = env_get("HTTP_HOST"))) |
| 2159 | if (!(cp = env_get("SERVER_NAME"))) |
| 2160 | strerr_die2x(100,FATAL,"both HTTP_HOST and SERVER_NAME are empty"); |
| 2161 | if (!stralloc_cats(&base,cp)) die_nomem(); |
| 2162 | if (!(cp = env_get("SCRIPT_NAME"))) |
| 2163 | strerr_die2x(100,FATAL,"empty SCRIPT_NAME"); |
| 2164 | if (!stralloc_cats(&base,cp)) die_nomem(); |
| 2165 | if (!stralloc_cats(&base,"\">\n")) die_nomem(); |
| 2166 | if (!stralloc_copys(&url,"<A HREF=\"")) die_nomem(); |
| 2167 | pos = str_rchr(cp,'/'); |
| 2168 | if (cp[pos]) |
| 2169 | if (!stralloc_cats(&url,cp + pos + 1)) die_nomem(); |
| 2170 | if (!stralloc_cats(&url,"?")) die_nomem(); |
| 2171 | if (thislistno) { |
| 2172 | if (!stralloc_catb(&url,strnum,fmt_ulong(strnum,thislistno))) die_nomem(); |
| 2173 | if (!stralloc_cats(&url,":")) die_nomem(); |
| 2174 | } |
| 2175 | |
| 2176 | cache = 1; /* don't know if we want to cache */ |
| 2177 | |
| 2178 | /****************************** Get command ****************************/ |
| 2179 | |
| 2180 | if (msgnum) { /* to support /listno/msgno */ |
| 2181 | msginfo.target = msgnum; |
| 2182 | msginfo.item = ITEM_MESSAGE; |
| 2183 | cache = 2; |
| 2184 | } else { |
| 2185 | (void) decode_cmd(cmd,&msginfo); |
| 2186 | if (!do_cmd(&msginfo)) |
| 2187 | cgierr("I'm sorry, Dave ... I can't do that, Dave ...","",""); |
| 2188 | } |
| 2189 | |
| 2190 | switch (msginfo.item) { |
| 2191 | case ITEM_MESSAGE: |
| 2192 | if (!show_message(&msginfo)) { /* assume next exists ... */ |
| 2193 | cache = 0; /* border cond. - no cache */ |
| 2194 | msginfo.target = msginfo.source; /* show same */ |
| 2195 | msginfo.subjnav = 0; |
| 2196 | msginfo.authnav = 0; |
| 2197 | ret = show_message(&msginfo); |
| 2198 | } |
| 2199 | break; |
| 2200 | case ITEM_AUTHOR: |
| 2201 | if (!show_object(&msginfo,ITEM_AUTHOR)) |
| 2202 | cgierr ("I couldn't find the author for that message","",""); |
| 2203 | break; |
| 2204 | case ITEM_SUBJECT: |
| 2205 | if (!show_object(&msginfo,ITEM_SUBJECT)) |
| 2206 | cgierr ("I couldn't find the subject for that message","",""); |
| 2207 | break; |
| 2208 | case ITEM_DATE: |
| 2209 | if (!show_object(&msginfo,ITEM_DATE)) { |
| 2210 | finddate(&msginfo); |
| 2211 | ret = show_object(&msginfo,ITEM_DATE); |
| 2212 | } |
| 2213 | break; |
| 2214 | case ITEM_INDEX: |
| 2215 | if (!show_index(&msginfo)) { |
| 2216 | tmptarget = msginfo.target; |
| 2217 | findlastmsg(&msginfo); |
| 2218 | cache = 0; /* latest one - no cache */ |
| 2219 | if (!msginfo.target || msginfo.target > tmptarget) { |
| 2220 | cache = 2; /* won't change */ |
| 2221 | firstdate(&msginfo,1); /* first thread index */ |
| 2222 | msginfo.direction = DIRECT_FIRST; |
| 2223 | date2msg(&msginfo); /* (may not be 1 if parts removed) */ |
| 2224 | } |
| 2225 | ret = show_index(&msginfo); |
| 2226 | } |
| 2227 | break; |
| 2228 | default: |
| 2229 | strerr_die2x(100,FATAL,"bad item in main"); |
| 2230 | } |
| 2231 | if (!ret) { |
| 2232 | findlastmsg(&msginfo); /* as last resort; last msgindex */ |
| 2233 | cache = 0; |
| 2234 | ret = show_message(&msginfo); |
| 2235 | } |
| 2236 | |
| 2237 | _exit(0); |
| 2238 | } |