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| 1 | /*
|
|---|---|
| 2 | * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client |
| 3 | * Copyright (C) 1999-2004 Hiroyuki Yamamoto |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation; either version 2 of the License, or |
| 8 | * (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program; if not, write to the Free Software |
| 17 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 18 | */ |
| 19 | |
| 20 | #ifdef HAVE_CONFIG_H
|
| 21 | # include "config.h" |
| 22 | #endif
|
| 23 | |
| 24 | #include "defs.h" |
| 25 | |
| 26 | #include <glib.h> |
| 27 | #include <glib/gi18n.h> |
| 28 | #include <stdio.h> |
| 29 | #include <string.h> |
| 30 | #include <locale.h> |
| 31 | #include <ctype.h> |
| 32 | |
| 33 | #include "procmime.h" |
| 34 | #include "procheader.h" |
| 35 | #include "base64.h" |
| 36 | #include "quoted-printable.h" |
| 37 | #include "uuencode.h" |
| 38 | #include "unmime.h" |
| 39 | #include "html.h" |
| 40 | #include "codeconv.h" |
| 41 | #include "utils.h" |
| 42 | #include "prefs_common.h" |
| 43 | |
| 44 | #if USE_GPGME
|
| 45 | # include "rfc2015.h" |
| 46 | #endif
|
| 47 | |
| 48 | static GHashTable *procmime_get_mime_type_table (void); |
| 49 | static GList *procmime_get_mime_type_list (const gchar *file); |
| 50 | |
| 51 | |
| 52 | MimeInfo *procmime_mimeinfo_new(void)
|
| 53 | {
|
| 54 | MimeInfo *mimeinfo; |
| 55 | |
| 56 | mimeinfo = g_new0(MimeInfo, 1);
|
| 57 | mimeinfo->mime_type = MIME_UNKNOWN; |
| 58 | mimeinfo->encoding_type = ENC_UNKNOWN; |
| 59 | |
| 60 | return mimeinfo;
|
| 61 | } |
| 62 | |
| 63 | void procmime_mimeinfo_free_all(MimeInfo *mimeinfo)
|
| 64 | {
|
| 65 | while (mimeinfo != NULL) { |
| 66 | MimeInfo *next; |
| 67 | |
| 68 | g_free(mimeinfo->encoding); |
| 69 | g_free(mimeinfo->content_type); |
| 70 | g_free(mimeinfo->charset); |
| 71 | g_free(mimeinfo->name); |
| 72 | g_free(mimeinfo->boundary); |
| 73 | g_free(mimeinfo->content_disposition); |
| 74 | g_free(mimeinfo->filename); |
| 75 | #if USE_GPGME
|
| 76 | g_free(mimeinfo->plaintextfile); |
| 77 | g_free(mimeinfo->sigstatus); |
| 78 | g_free(mimeinfo->sigstatus_full); |
| 79 | #endif
|
| 80 | |
| 81 | procmime_mimeinfo_free_all(mimeinfo->sub); |
| 82 | procmime_mimeinfo_free_all(mimeinfo->children); |
| 83 | #if USE_GPGME
|
| 84 | procmime_mimeinfo_free_all(mimeinfo->plaintext); |
| 85 | #endif
|
| 86 | |
| 87 | next = mimeinfo->next; |
| 88 | g_free(mimeinfo); |
| 89 | mimeinfo = next; |
| 90 | } |
| 91 | } |
| 92 | |
| 93 | MimeInfo *procmime_mimeinfo_insert(MimeInfo *parent, MimeInfo *mimeinfo) |
| 94 | {
|
| 95 | MimeInfo *child = parent->children; |
| 96 | |
| 97 | if (!child)
|
| 98 | parent->children = mimeinfo; |
| 99 | else {
|
| 100 | while (child->next != NULL) |
| 101 | child = child->next; |
| 102 | |
| 103 | child->next = mimeinfo; |
| 104 | } |
| 105 | |
| 106 | mimeinfo->parent = parent; |
| 107 | mimeinfo->level = parent->level + 1;
|
| 108 | |
| 109 | return mimeinfo;
|
| 110 | } |
| 111 | |
| 112 | void procmime_mimeinfo_replace(MimeInfo *old, MimeInfo *new)
|
| 113 | {
|
| 114 | MimeInfo *parent = old->parent; |
| 115 | MimeInfo *child; |
| 116 | |
| 117 | g_return_if_fail(parent != NULL);
|
| 118 | g_return_if_fail(new->next == NULL);
|
| 119 | |
| 120 | for (child = parent->children; child && child != old;
|
| 121 | child = child->next) |
| 122 | ; |
| 123 | if (!child) {
|
| 124 | g_warning("oops: parent can't find it's own child");
|
| 125 | return;
|
| 126 | } |
| 127 | procmime_mimeinfo_free_all(old); |
| 128 | |
| 129 | if (child == parent->children) {
|
| 130 | new->next = parent->children->next; |
| 131 | parent->children = new; |
| 132 | } else {
|
| 133 | new->next = child->next; |
| 134 | child = new; |
| 135 | } |
| 136 | } |
| 137 | |
| 138 | MimeInfo *procmime_mimeinfo_next(MimeInfo *mimeinfo) |
| 139 | {
|
| 140 | if (!mimeinfo) return NULL; |
| 141 | |
| 142 | if (mimeinfo->children)
|
| 143 | return mimeinfo->children;
|
| 144 | if (mimeinfo->sub)
|
| 145 | return mimeinfo->sub;
|
| 146 | if (mimeinfo->next)
|
| 147 | return mimeinfo->next;
|
| 148 | |
| 149 | if (mimeinfo->main) {
|
| 150 | mimeinfo = mimeinfo->main; |
| 151 | if (mimeinfo->next)
|
| 152 | return mimeinfo->next;
|
| 153 | } |
| 154 | |
| 155 | for (mimeinfo = mimeinfo->parent; mimeinfo != NULL; |
| 156 | mimeinfo = mimeinfo->parent) {
|
| 157 | if (mimeinfo->next)
|
| 158 | return mimeinfo->next;
|
| 159 | if (mimeinfo->main) {
|
| 160 | mimeinfo = mimeinfo->main; |
| 161 | if (mimeinfo->next)
|
| 162 | return mimeinfo->next;
|
| 163 | } |
| 164 | } |
| 165 | |
| 166 | return NULL; |
| 167 | } |
| 168 | |
| 169 | #if 0
|
| 170 | void procmime_dump_mimeinfo(MimeInfo *mimeinfo) |
| 171 | {
|
| 172 | gint i; |
| 173 | |
| 174 | g_print("\n");
|
| 175 | |
| 176 | for (; mimeinfo != NULL; mimeinfo = procmime_mimeinfo_next(mimeinfo)) {
|
| 177 | for (i = 0; i < mimeinfo->level; i++) |
| 178 | g_print(" ");
|
| 179 | g_print("%s%s\n", mimeinfo->main ? "sub: " : "",
|
| 180 | mimeinfo->content_type); |
| 181 | } |
| 182 | } |
| 183 | #endif |
| 184 | |
| 185 | MimeInfo *procmime_scan_message(MsgInfo *msginfo) |
| 186 | {
|
| 187 | FILE *fp; |
| 188 | MimeInfo *mimeinfo; |
| 189 | |
| 190 | g_return_val_if_fail(msginfo != NULL, NULL); |
| 191 | |
| 192 | #if USE_GPGME
|
| 193 | if ((fp = procmsg_open_message_decrypted(msginfo, &mimeinfo)) == NULL) |
| 194 | return NULL; |
| 195 | #else
|
| 196 | if ((fp = procmsg_open_message(msginfo)) == NULL) return NULL; |
| 197 | mimeinfo = procmime_scan_mime_header(fp); |
| 198 | #endif
|
| 199 | |
| 200 | if (mimeinfo) {
|
| 201 | mimeinfo->size = get_left_file_size(fp); |
| 202 | if (mimeinfo->mime_type == MIME_MULTIPART ||
|
| 203 | mimeinfo->mime_type == MIME_MESSAGE_RFC822) |
| 204 | procmime_scan_multipart_message(mimeinfo, fp); |
| 205 | } |
| 206 | |
| 207 | fclose(fp); |
| 208 | |
| 209 | return mimeinfo;
|
| 210 | } |
| 211 | |
| 212 | void procmime_scan_multipart_message(MimeInfo *mimeinfo, FILE *fp)
|
| 213 | {
|
| 214 | gchar *p; |
| 215 | gchar *boundary; |
| 216 | gint boundary_len = 0;
|
| 217 | gchar buf[BUFFSIZE]; |
| 218 | glong fpos, prev_fpos; |
| 219 | |
| 220 | g_return_if_fail(mimeinfo != NULL);
|
| 221 | g_return_if_fail(mimeinfo->mime_type == MIME_MULTIPART || |
| 222 | mimeinfo->mime_type == MIME_MESSAGE_RFC822); |
| 223 | |
| 224 | if (mimeinfo->mime_type == MIME_MULTIPART) {
|
| 225 | g_return_if_fail(mimeinfo->boundary != NULL);
|
| 226 | g_return_if_fail(mimeinfo->sub == NULL);
|
| 227 | } |
| 228 | g_return_if_fail(fp != NULL);
|
| 229 | |
| 230 | boundary = mimeinfo->boundary; |
| 231 | |
| 232 | if (boundary) {
|
| 233 | boundary_len = strlen(boundary); |
| 234 | |
| 235 | /* look for first boundary */
|
| 236 | while ((p = fgets(buf, sizeof(buf), fp)) != NULL) |
| 237 | if (IS_BOUNDARY(buf, boundary, boundary_len)) break; |
| 238 | if (!p) return; |
| 239 | } else if (mimeinfo->parent && mimeinfo->parent->boundary) { |
| 240 | boundary = mimeinfo->parent->boundary; |
| 241 | boundary_len = strlen(boundary); |
| 242 | } |
| 243 | |
| 244 | if ((fpos = ftell(fp)) < 0) { |
| 245 | perror("ftell");
|
| 246 | return;
|
| 247 | } |
| 248 | |
| 249 | for (;;) {
|
| 250 | MimeInfo *partinfo; |
| 251 | gboolean eom = FALSE; |
| 252 | gint len; |
| 253 | |
| 254 | prev_fpos = fpos; |
| 255 | debug_print("prev_fpos: %ld\n", fpos);
|
| 256 | |
| 257 | if (mimeinfo->mime_type == MIME_MESSAGE_RFC822) {
|
| 258 | MimeInfo *sub; |
| 259 | |
| 260 | mimeinfo->sub = sub = procmime_scan_mime_header(fp); |
| 261 | if (!sub) break; |
| 262 | |
| 263 | sub->level = mimeinfo->level + 1;
|
| 264 | sub->parent = mimeinfo->parent; |
| 265 | sub->main = mimeinfo; |
| 266 | |
| 267 | partinfo = sub; |
| 268 | } else {
|
| 269 | partinfo = procmime_scan_mime_header(fp); |
| 270 | if (!partinfo) break; |
| 271 | procmime_mimeinfo_insert(mimeinfo, partinfo); |
| 272 | debug_print("content-type: %s\n",
|
| 273 | partinfo->content_type); |
| 274 | } |
| 275 | |
| 276 | if (partinfo->mime_type == MIME_MULTIPART ||
|
| 277 | partinfo->mime_type == MIME_MESSAGE_RFC822) {
|
| 278 | if (partinfo->level < 8) |
| 279 | procmime_scan_multipart_message(partinfo, fp); |
| 280 | } |
| 281 | |
| 282 | /* look for next boundary */
|
| 283 | buf[0] = '\0'; |
| 284 | while ((p = fgets(buf, sizeof(buf), fp)) != NULL) { |
| 285 | if (IS_BOUNDARY(buf, boundary, boundary_len)) {
|
| 286 | if (buf[2 + boundary_len] == '-' && |
| 287 | buf[2 + boundary_len + 1] == '-') |
| 288 | eom = TRUE; |
| 289 | break;
|
| 290 | } |
| 291 | } |
| 292 | if (p == NULL) { |
| 293 | /* broken MIME, or single part MIME message */
|
| 294 | buf[0] = '\0'; |
| 295 | eom = TRUE; |
| 296 | } |
| 297 | debug_print("boundary: %s\n", buf);
|
| 298 | |
| 299 | fpos = ftell(fp); |
| 300 | debug_print("fpos: %ld\n", fpos);
|
| 301 | |
| 302 | len = strlen(buf); |
| 303 | partinfo->size = fpos - prev_fpos - len; |
| 304 | debug_print("partinfo->size: %d\n", partinfo->size);
|
| 305 | if (partinfo->sub && !partinfo->sub->sub &&
|
| 306 | !partinfo->sub->children) {
|
| 307 | partinfo->sub->size = |
| 308 | fpos - partinfo->sub->fpos - strlen(buf); |
| 309 | debug_print("partinfo->sub->size: %d\n",
|
| 310 | partinfo->sub->size); |
| 311 | } |
| 312 | |
| 313 | if (mimeinfo->mime_type == MIME_MESSAGE_RFC822) {
|
| 314 | if (len > 0 && fseek(fp, fpos - len, SEEK_SET) < 0) |
| 315 | perror("fseek");
|
| 316 | break;
|
| 317 | } |
| 318 | |
| 319 | if (eom) break; |
| 320 | } |
| 321 | } |
| 322 | |
| 323 | void procmime_scan_encoding(MimeInfo *mimeinfo, const gchar *encoding) |
| 324 | {
|
| 325 | gchar *buf; |
| 326 | |
| 327 | Xstrdup_a(buf, encoding, return);
|
| 328 | |
| 329 | g_free(mimeinfo->encoding); |
| 330 | |
| 331 | mimeinfo->encoding = g_strdup(g_strstrip(buf)); |
| 332 | if (!strcasecmp(buf, "7bit")) |
| 333 | mimeinfo->encoding_type = ENC_7BIT; |
| 334 | else if (!strcasecmp(buf, "8bit")) |
| 335 | mimeinfo->encoding_type = ENC_8BIT; |
| 336 | else if (!strcasecmp(buf, "quoted-printable")) |
| 337 | mimeinfo->encoding_type = ENC_QUOTED_PRINTABLE; |
| 338 | else if (!strcasecmp(buf, "base64")) |
| 339 | mimeinfo->encoding_type = ENC_BASE64; |
| 340 | else if (!strcasecmp(buf, "x-uuencode")) |
| 341 | mimeinfo->encoding_type = ENC_X_UUENCODE; |
| 342 | else
|
| 343 | mimeinfo->encoding_type = ENC_UNKNOWN; |
| 344 | |
| 345 | } |
| 346 | |
| 347 | void procmime_scan_content_type(MimeInfo *mimeinfo, const gchar *content_type) |
| 348 | {
|
| 349 | gchar *delim, *p, *cnttype; |
| 350 | gchar *buf; |
| 351 | |
| 352 | Xstrdup_a(buf, content_type, return);
|
| 353 | |
| 354 | g_free(mimeinfo->content_type); |
| 355 | g_free(mimeinfo->charset); |
| 356 | g_free(mimeinfo->name); |
| 357 | mimeinfo->content_type = NULL;
|
| 358 | mimeinfo->charset = NULL;
|
| 359 | mimeinfo->name = NULL;
|
| 360 | |
| 361 | if ((delim = strchr(buf, ';'))) *delim = '\0'; |
| 362 | mimeinfo->content_type = cnttype = g_strdup(g_strstrip(buf)); |
| 363 | |
| 364 | mimeinfo->mime_type = procmime_scan_mime_type(cnttype); |
| 365 | |
| 366 | if (!delim) return; |
| 367 | p = delim + 1;
|
| 368 | |
| 369 | for (;;) {
|
| 370 | gchar *eq; |
| 371 | gchar *attr, *value; |
| 372 | |
| 373 | if ((delim = strchr(p, ';'))) *delim = '\0'; |
| 374 | |
| 375 | if (!(eq = strchr(p, '='))) break; |
| 376 | |
| 377 | *eq = '\0';
|
| 378 | attr = p; |
| 379 | g_strstrip(attr); |
| 380 | value = eq + 1;
|
| 381 | g_strstrip(value); |
| 382 | |
| 383 | if (*value == '"') |
| 384 | extract_quote(value, '"');
|
| 385 | else {
|
| 386 | eliminate_parenthesis(value, '(', ')'); |
| 387 | g_strstrip(value); |
| 388 | } |
| 389 | |
| 390 | if (*value) {
|
| 391 | if (!strcasecmp(attr, "charset")) |
| 392 | mimeinfo->charset = g_strdup(value); |
| 393 | else if (!strcasecmp(attr, "name")) { |
| 394 | gchar *tmp; |
| 395 | size_t len; |
| 396 | |
| 397 | len = strlen(value) + 1;
|
| 398 | Xalloca(tmp, len, return);
|
| 399 | conv_unmime_header(tmp, len, value, NULL);
|
| 400 | mimeinfo->name = g_strdup(tmp); |
| 401 | } else if (!strcasecmp(attr, "boundary")) |
| 402 | mimeinfo->boundary = g_strdup(value); |
| 403 | } |
| 404 | |
| 405 | if (!delim) break; |
| 406 | p = delim + 1;
|
| 407 | } |
| 408 | |
| 409 | if (mimeinfo->mime_type == MIME_MULTIPART && !mimeinfo->boundary)
|
| 410 | mimeinfo->mime_type = MIME_TEXT; |
| 411 | } |
| 412 | |
| 413 | void procmime_scan_content_disposition(MimeInfo *mimeinfo,
|
| 414 | const gchar *content_disposition)
|
| 415 | {
|
| 416 | gchar *delim, *p, *dispos; |
| 417 | gchar *buf; |
| 418 | |
| 419 | Xstrdup_a(buf, content_disposition, return);
|
| 420 | |
| 421 | if ((delim = strchr(buf, ';'))) *delim = '\0'; |
| 422 | mimeinfo->content_disposition = dispos = g_strdup(g_strstrip(buf)); |
| 423 | |
| 424 | if (!delim) return; |
| 425 | p = delim + 1;
|
| 426 | |
| 427 | for (;;) {
|
| 428 | gchar *eq; |
| 429 | gchar *attr, *value; |
| 430 | |
| 431 | if ((delim = strchr(p, ';'))) *delim = '\0'; |
| 432 | |
| 433 | if (!(eq = strchr(p, '='))) break; |
| 434 | |
| 435 | *eq = '\0';
|
| 436 | attr = p; |
| 437 | g_strstrip(attr); |
| 438 | value = eq + 1;
|
| 439 | g_strstrip(value); |
| 440 | |
| 441 | if (*value == '"') |
| 442 | extract_quote(value, '"');
|
| 443 | else {
|
| 444 | eliminate_parenthesis(value, '(', ')'); |
| 445 | g_strstrip(value); |
| 446 | } |
| 447 | |
| 448 | if (*value) {
|
| 449 | if (!strcasecmp(attr, "filename")) { |
| 450 | gchar *tmp; |
| 451 | size_t len; |
| 452 | |
| 453 | len = strlen(value) + 1;
|
| 454 | Xalloca(tmp, len, return);
|
| 455 | conv_unmime_header(tmp, len, value, NULL);
|
| 456 | g_free(mimeinfo->filename); |
| 457 | mimeinfo->filename = g_strdup(tmp); |
| 458 | break;
|
| 459 | } |
| 460 | } |
| 461 | |
| 462 | if (!delim) break; |
| 463 | p = delim + 1;
|
| 464 | } |
| 465 | } |
| 466 | |
| 467 | enum
|
| 468 | {
|
| 469 | H_CONTENT_TRANSFER_ENCODING = 0,
|
| 470 | H_CONTENT_TYPE = 1,
|
| 471 | H_CONTENT_DISPOSITION = 2
|
| 472 | }; |
| 473 | |
| 474 | MimeInfo *procmime_scan_mime_header(FILE *fp) |
| 475 | {
|
| 476 | static HeaderEntry hentry[] = {{"Content-Transfer-Encoding:", |
| 477 | NULL, FALSE},
|
| 478 | {"Content-Type:", NULL, TRUE},
|
| 479 | {"Content-Disposition:",
|
| 480 | NULL, TRUE},
|
| 481 | {NULL, NULL, FALSE}};
|
| 482 | gchar buf[BUFFSIZE]; |
| 483 | gint hnum; |
| 484 | HeaderEntry *hp; |
| 485 | MimeInfo *mimeinfo; |
| 486 | |
| 487 | g_return_val_if_fail(fp != NULL, NULL); |
| 488 | |
| 489 | mimeinfo = procmime_mimeinfo_new(); |
| 490 | mimeinfo->mime_type = MIME_TEXT; |
| 491 | mimeinfo->encoding_type = ENC_7BIT; |
| 492 | mimeinfo->fpos = ftell(fp); |
| 493 | |
| 494 | while ((hnum = procheader_get_one_field(buf, sizeof(buf), fp, hentry)) |
| 495 | != -1) {
|
| 496 | hp = hentry + hnum; |
| 497 | |
| 498 | if (H_CONTENT_TRANSFER_ENCODING == hnum) {
|
| 499 | procmime_scan_encoding |
| 500 | (mimeinfo, buf + strlen(hp->name)); |
| 501 | } else if (H_CONTENT_TYPE == hnum) { |
| 502 | procmime_scan_content_type |
| 503 | (mimeinfo, buf + strlen(hp->name)); |
| 504 | } else if (H_CONTENT_DISPOSITION == hnum) { |
| 505 | procmime_scan_content_disposition |
| 506 | (mimeinfo, buf + strlen(hp->name)); |
| 507 | } |
| 508 | } |
| 509 | |
| 510 | if (mimeinfo->mime_type == MIME_APPLICATION_OCTET_STREAM &&
|
| 511 | mimeinfo->name) {
|
| 512 | const gchar *type;
|
| 513 | type = procmime_get_mime_type(mimeinfo->name); |
| 514 | if (type)
|
| 515 | mimeinfo->mime_type = procmime_scan_mime_type(type); |
| 516 | } |
| 517 | |
| 518 | if (!mimeinfo->content_type)
|
| 519 | mimeinfo->content_type = g_strdup("text/plain");
|
| 520 | |
| 521 | return mimeinfo;
|
| 522 | } |
| 523 | |
| 524 | FILE *procmime_decode_content(FILE *outfp, FILE *infp, MimeInfo *mimeinfo) |
| 525 | {
|
| 526 | gchar buf[BUFFSIZE]; |
| 527 | gchar *boundary = NULL;
|
| 528 | gint boundary_len = 0;
|
| 529 | gboolean tmp_file = FALSE; |
| 530 | |
| 531 | g_return_val_if_fail(infp != NULL, NULL); |
| 532 | g_return_val_if_fail(mimeinfo != NULL, NULL); |
| 533 | |
| 534 | if (!outfp) {
|
| 535 | outfp = my_tmpfile(); |
| 536 | if (!outfp) {
|
| 537 | perror("tmpfile");
|
| 538 | return NULL; |
| 539 | } |
| 540 | tmp_file = TRUE; |
| 541 | } |
| 542 | |
| 543 | if (mimeinfo->parent && mimeinfo->parent->boundary) {
|
| 544 | boundary = mimeinfo->parent->boundary; |
| 545 | boundary_len = strlen(boundary); |
| 546 | } |
| 547 | |
| 548 | if (mimeinfo->encoding_type == ENC_QUOTED_PRINTABLE) {
|
| 549 | while (fgets(buf, sizeof(buf), infp) != NULL && |
| 550 | (!boundary || |
| 551 | !IS_BOUNDARY(buf, boundary, boundary_len))) {
|
| 552 | gint len; |
| 553 | len = qp_decode_line(buf); |
| 554 | fwrite(buf, len, 1, outfp);
|
| 555 | } |
| 556 | } else if (mimeinfo->encoding_type == ENC_BASE64) { |
| 557 | gchar outbuf[BUFFSIZE]; |
| 558 | gint len; |
| 559 | Base64Decoder *decoder; |
| 560 | gboolean uncanonicalize = FALSE; |
| 561 | FILE *tmpfp = outfp; |
| 562 | |
| 563 | if (mimeinfo->mime_type == MIME_TEXT ||
|
| 564 | mimeinfo->mime_type == MIME_TEXT_HTML || |
| 565 | mimeinfo->mime_type == MIME_MESSAGE_RFC822) {
|
| 566 | uncanonicalize = TRUE; |
| 567 | tmpfp = my_tmpfile(); |
| 568 | if (!tmpfp) {
|
| 569 | perror("tmpfile");
|
| 570 | if (tmp_file) fclose(outfp);
|
| 571 | return NULL; |
| 572 | } |
| 573 | } |
| 574 | |
| 575 | decoder = base64_decoder_new(); |
| 576 | while (fgets(buf, sizeof(buf), infp) != NULL && |
| 577 | (!boundary || |
| 578 | !IS_BOUNDARY(buf, boundary, boundary_len))) {
|
| 579 | len = base64_decoder_decode(decoder, buf, outbuf); |
| 580 | if (len < 0) { |
| 581 | g_warning("Bad BASE64 content\n");
|
| 582 | break;
|
| 583 | } |
| 584 | fwrite(outbuf, sizeof(gchar), len, tmpfp);
|
| 585 | } |
| 586 | base64_decoder_free(decoder); |
| 587 | |
| 588 | if (uncanonicalize) {
|
| 589 | rewind(tmpfp); |
| 590 | while (fgets(buf, sizeof(buf), tmpfp) != NULL) { |
| 591 | strcrchomp(buf); |
| 592 | fputs(buf, outfp); |
| 593 | } |
| 594 | fclose(tmpfp); |
| 595 | } |
| 596 | } else if (mimeinfo->encoding_type == ENC_X_UUENCODE) { |
| 597 | gchar outbuf[BUFFSIZE]; |
| 598 | gint len; |
| 599 | gboolean flag = FALSE; |
| 600 | |
| 601 | while (fgets(buf, sizeof(buf), infp) != NULL && |
| 602 | (!boundary || |
| 603 | !IS_BOUNDARY(buf, boundary, boundary_len))) {
|
| 604 | if(!flag && strncmp(buf,"begin ", 6)) continue; |
| 605 | |
| 606 | if (flag) {
|
| 607 | len = fromuutobits(outbuf, buf); |
| 608 | if (len <= 0) { |
| 609 | if (len < 0) |
| 610 | g_warning("Bad UUENCODE content(%d)\n", len);
|
| 611 | break;
|
| 612 | } |
| 613 | fwrite(outbuf, sizeof(gchar), len, outfp);
|
| 614 | } else
|
| 615 | flag = TRUE; |
| 616 | } |
| 617 | } else {
|
| 618 | while (fgets(buf, sizeof(buf), infp) != NULL && |
| 619 | (!boundary || |
| 620 | !IS_BOUNDARY(buf, boundary, boundary_len))) {
|
| 621 | fputs(buf, outfp); |
| 622 | } |
| 623 | } |
| 624 | |
| 625 | if (tmp_file) rewind(outfp);
|
| 626 | return outfp;
|
| 627 | } |
| 628 | |
| 629 | gint procmime_get_part(const gchar *outfile, const gchar *infile, |
| 630 | MimeInfo *mimeinfo) |
| 631 | {
|
| 632 | FILE *infp; |
| 633 | gint ret; |
| 634 | |
| 635 | g_return_val_if_fail(outfile != NULL, -1); |
| 636 | g_return_val_if_fail(infile != NULL, -1); |
| 637 | g_return_val_if_fail(mimeinfo != NULL, -1); |
| 638 | |
| 639 | if ((infp = fopen(infile, "rb")) == NULL) { |
| 640 | FILE_OP_ERROR(infile, "fopen");
|
| 641 | return -1; |
| 642 | } |
| 643 | ret = procmime_get_part_fp(outfile, infp, mimeinfo); |
| 644 | fclose(infp); |
| 645 | |
| 646 | return ret;
|
| 647 | } |
| 648 | |
| 649 | gint procmime_get_part_fp(const gchar *outfile, FILE *infp, MimeInfo *mimeinfo)
|
| 650 | {
|
| 651 | FILE *outfp; |
| 652 | gchar buf[BUFFSIZE]; |
| 653 | |
| 654 | g_return_val_if_fail(outfile != NULL, -1); |
| 655 | g_return_val_if_fail(infp != NULL, -1); |
| 656 | g_return_val_if_fail(mimeinfo != NULL, -1); |
| 657 | |
| 658 | if (fseek(infp, mimeinfo->fpos, SEEK_SET) < 0) { |
| 659 | FILE_OP_ERROR("procmime_get_part_fp()", "fseek"); |
| 660 | return -1; |
| 661 | } |
| 662 | if ((outfp = fopen(outfile, "wb")) == NULL) { |
| 663 | FILE_OP_ERROR(outfile, "fopen");
|
| 664 | return -1; |
| 665 | } |
| 666 | |
| 667 | while (fgets(buf, sizeof(buf), infp) != NULL) |
| 668 | if (buf[0] == '\r' || buf[0] == '\n') break; |
| 669 | |
| 670 | procmime_decode_content(outfp, infp, mimeinfo); |
| 671 | |
| 672 | if (fclose(outfp) == EOF) { |
| 673 | FILE_OP_ERROR(outfile, "fclose");
|
| 674 | unlink(outfile); |
| 675 | return -1; |
| 676 | } |
| 677 | |
| 678 | return 0; |
| 679 | } |
| 680 | |
| 681 | FILE *procmime_get_text_content(MimeInfo *mimeinfo, FILE *infp) |
| 682 | {
|
| 683 | FILE *tmpfp, *outfp; |
| 684 | gchar *src_codeset; |
| 685 | gboolean conv_fail = FALSE; |
| 686 | gchar buf[BUFFSIZE]; |
| 687 | gchar *str; |
| 688 | |
| 689 | g_return_val_if_fail(mimeinfo != NULL, NULL); |
| 690 | g_return_val_if_fail(infp != NULL, NULL); |
| 691 | g_return_val_if_fail(mimeinfo->mime_type == MIME_TEXT || |
| 692 | mimeinfo->mime_type == MIME_TEXT_HTML, NULL);
|
| 693 | |
| 694 | if (fseek(infp, mimeinfo->fpos, SEEK_SET) < 0) { |
| 695 | perror("fseek");
|
| 696 | return NULL; |
| 697 | } |
| 698 | |
| 699 | while (fgets(buf, sizeof(buf), infp) != NULL) |
| 700 | if (buf[0] == '\r' || buf[0] == '\n') break; |
| 701 | |
| 702 | tmpfp = procmime_decode_content(NULL, infp, mimeinfo);
|
| 703 | if (!tmpfp)
|
| 704 | return NULL; |
| 705 | |
| 706 | if ((outfp = my_tmpfile()) == NULL) { |
| 707 | perror("tmpfile");
|
| 708 | fclose(tmpfp); |
| 709 | return NULL; |
| 710 | } |
| 711 | |
| 712 | src_codeset = prefs_common.force_charset |
| 713 | ? prefs_common.force_charset : mimeinfo->charset; |
| 714 | |
| 715 | if (mimeinfo->mime_type == MIME_TEXT) {
|
| 716 | while (fgets(buf, sizeof(buf), tmpfp) != NULL) { |
| 717 | str = conv_codeset_strdup(buf, src_codeset, NULL);
|
| 718 | if (str) {
|
| 719 | fputs(str, outfp); |
| 720 | g_free(str); |
| 721 | } else {
|
| 722 | conv_fail = TRUE; |
| 723 | fputs(buf, outfp); |
| 724 | } |
| 725 | } |
| 726 | } else if (mimeinfo->mime_type == MIME_TEXT_HTML) { |
| 727 | HTMLParser *parser; |
| 728 | CodeConverter *conv; |
| 729 | |
| 730 | conv = conv_code_converter_new(src_codeset); |
| 731 | parser = html_parser_new(tmpfp, conv); |
| 732 | while ((str = html_parse(parser)) != NULL) { |
| 733 | fputs(str, outfp); |
| 734 | } |
| 735 | html_parser_destroy(parser); |
| 736 | conv_code_converter_destroy(conv); |
| 737 | } |
| 738 | |
| 739 | if (conv_fail)
|
| 740 | g_warning(_("procmime_get_text_content(): Code conversion failed.\n"));
|
| 741 | |
| 742 | fclose(tmpfp); |
| 743 | rewind(outfp); |
| 744 | |
| 745 | return outfp;
|
| 746 | } |
| 747 | |
| 748 | /* search the first text part of (multipart) MIME message,
|
| 749 | decode, convert it and output to outfp. */ |
| 750 | FILE *procmime_get_first_text_content(MsgInfo *msginfo) |
| 751 | {
|
| 752 | FILE *infp, *outfp = NULL;
|
| 753 | MimeInfo *mimeinfo, *partinfo; |
| 754 | |
| 755 | g_return_val_if_fail(msginfo != NULL, NULL); |
| 756 | |
| 757 | mimeinfo = procmime_scan_message(msginfo); |
| 758 | if (!mimeinfo) return NULL; |
| 759 | |
| 760 | if ((infp = procmsg_open_message(msginfo)) == NULL) { |
| 761 | procmime_mimeinfo_free_all(mimeinfo); |
| 762 | return NULL; |
| 763 | } |
| 764 | |
| 765 | partinfo = mimeinfo; |
| 766 | while (partinfo && partinfo->mime_type != MIME_TEXT)
|
| 767 | partinfo = procmime_mimeinfo_next(partinfo); |
| 768 | if (!partinfo) {
|
| 769 | partinfo = mimeinfo; |
| 770 | while (partinfo && partinfo->mime_type != MIME_TEXT_HTML)
|
| 771 | partinfo = procmime_mimeinfo_next(partinfo); |
| 772 | } |
| 773 | |
| 774 | if (partinfo)
|
| 775 | outfp = procmime_get_text_content(partinfo, infp); |
| 776 | |
| 777 | fclose(infp); |
| 778 | procmime_mimeinfo_free_all(mimeinfo); |
| 779 | |
| 780 | return outfp;
|
| 781 | } |
| 782 | |
| 783 | gboolean procmime_find_string_part(MimeInfo *mimeinfo, const gchar *filename,
|
| 784 | const gchar *str, StrFindFunc find_func)
|
| 785 | {
|
| 786 | |
| 787 | FILE *infp, *outfp; |
| 788 | gchar buf[BUFFSIZE]; |
| 789 | |
| 790 | g_return_val_if_fail(mimeinfo != NULL, FALSE);
|
| 791 | g_return_val_if_fail(mimeinfo->mime_type == MIME_TEXT || |
| 792 | mimeinfo->mime_type == MIME_TEXT_HTML, FALSE); |
| 793 | g_return_val_if_fail(str != NULL, FALSE);
|
| 794 | g_return_val_if_fail(find_func != NULL, FALSE);
|
| 795 | |
| 796 | if ((infp = fopen(filename, "rb")) == NULL) { |
| 797 | FILE_OP_ERROR(filename, "fopen");
|
| 798 | return FALSE;
|
| 799 | } |
| 800 | |
| 801 | outfp = procmime_get_text_content(mimeinfo, infp); |
| 802 | fclose(infp); |
| 803 | |
| 804 | if (!outfp)
|
| 805 | return FALSE;
|
| 806 | |
| 807 | while (fgets(buf, sizeof(buf), outfp) != NULL) { |
| 808 | strretchomp(buf); |
| 809 | if (find_func(buf, str)) {
|
| 810 | fclose(outfp); |
| 811 | return TRUE;
|
| 812 | } |
| 813 | } |
| 814 | |
| 815 | fclose(outfp); |
| 816 | |
| 817 | return FALSE;
|
| 818 | } |
| 819 | |
| 820 | gboolean procmime_find_string(MsgInfo *msginfo, const gchar *str,
|
| 821 | StrFindFunc find_func) |
| 822 | {
|
| 823 | MimeInfo *mimeinfo; |
| 824 | MimeInfo *partinfo; |
| 825 | gchar *filename; |
| 826 | gboolean found = FALSE; |
| 827 | |
| 828 | g_return_val_if_fail(msginfo != NULL, FALSE);
|
| 829 | g_return_val_if_fail(str != NULL, FALSE);
|
| 830 | g_return_val_if_fail(find_func != NULL, FALSE);
|
| 831 | |
| 832 | filename = procmsg_get_message_file(msginfo); |
| 833 | if (!filename) return FALSE; |
| 834 | mimeinfo = procmime_scan_message(msginfo); |
| 835 | |
| 836 | for (partinfo = mimeinfo; partinfo != NULL; |
| 837 | partinfo = procmime_mimeinfo_next(partinfo)) {
|
| 838 | if (partinfo->mime_type == MIME_TEXT ||
|
| 839 | partinfo->mime_type == MIME_TEXT_HTML) {
|
| 840 | if (procmime_find_string_part
|
| 841 | (partinfo, filename, str, find_func) == TRUE) {
|
| 842 | found = TRUE; |
| 843 | break;
|
| 844 | } |
| 845 | } |
| 846 | } |
| 847 | |
| 848 | procmime_mimeinfo_free_all(mimeinfo); |
| 849 | g_free(filename); |
| 850 | |
| 851 | return found;
|
| 852 | } |
| 853 | |
| 854 | gchar *procmime_get_tmp_file_name(MimeInfo *mimeinfo) |
| 855 | {
|
| 856 | static guint32 id = 0; |
| 857 | gchar *base; |
| 858 | gchar *filename; |
| 859 | gchar f_prefix[10];
|
| 860 | |
| 861 | g_return_val_if_fail(mimeinfo != NULL, NULL); |
| 862 | |
| 863 | g_snprintf(f_prefix, sizeof(f_prefix), "%08x.", id++); |
| 864 | |
| 865 | if (MIME_TEXT_HTML == mimeinfo->mime_type)
|
| 866 | base = g_strdup("mimetmp.html");
|
| 867 | else {
|
| 868 | const gchar *base_;
|
| 869 | |
| 870 | base_ = mimeinfo->filename ? mimeinfo->filename |
| 871 | : mimeinfo->name ? mimeinfo->name : "mimetmp";
|
| 872 | base_ = g_basename(base_); |
| 873 | if (*base_ == '\0') base_ = "mimetmp"; |
| 874 | base = conv_filename_from_utf8(base_); |
| 875 | subst_for_filename(base); |
| 876 | } |
| 877 | |
| 878 | filename = g_strconcat(get_mime_tmp_dir(), G_DIR_SEPARATOR_S, |
| 879 | f_prefix, base, NULL);
|
| 880 | |
| 881 | g_free(base); |
| 882 | |
| 883 | return filename;
|
| 884 | } |
| 885 | |
| 886 | ContentType procmime_scan_mime_type(const gchar *mime_type)
|
| 887 | {
|
| 888 | ContentType type; |
| 889 | |
| 890 | if (!strncasecmp(mime_type, "text/html", 9)) |
| 891 | type = MIME_TEXT_HTML; |
| 892 | else if (!strncasecmp(mime_type, "text/", 5)) |
| 893 | type = MIME_TEXT; |
| 894 | else if (!strncasecmp(mime_type, "message/rfc822", 14)) |
| 895 | type = MIME_MESSAGE_RFC822; |
| 896 | else if (!strncasecmp(mime_type, "message/", 8)) |
| 897 | type = MIME_TEXT; |
| 898 | else if (!strncasecmp(mime_type, "application/octet-stream", 24)) |
| 899 | type = MIME_APPLICATION_OCTET_STREAM; |
| 900 | else if (!strncasecmp(mime_type, "application/", 12)) |
| 901 | type = MIME_APPLICATION; |
| 902 | else if (!strncasecmp(mime_type, "multipart/", 10)) |
| 903 | type = MIME_MULTIPART; |
| 904 | else if (!strncasecmp(mime_type, "image/", 6)) |
| 905 | type = MIME_IMAGE; |
| 906 | else if (!strncasecmp(mime_type, "audio/", 6)) |
| 907 | type = MIME_AUDIO; |
| 908 | else if (!strcasecmp(mime_type, "text")) |
| 909 | type = MIME_TEXT; |
| 910 | else
|
| 911 | type = MIME_UNKNOWN; |
| 912 | |
| 913 | return type;
|
| 914 | } |
| 915 | |
| 916 | static GList *mime_type_list = NULL; |
| 917 | |
| 918 | gchar *procmime_get_mime_type(const gchar *filename)
|
| 919 | {
|
| 920 | static GHashTable *mime_type_table = NULL; |
| 921 | MimeType *mime_type; |
| 922 | const gchar *p;
|
| 923 | gchar *ext; |
| 924 | |
| 925 | if (!mime_type_table) {
|
| 926 | mime_type_table = procmime_get_mime_type_table(); |
| 927 | if (!mime_type_table) return NULL; |
| 928 | } |
| 929 | |
| 930 | filename = g_basename(filename); |
| 931 | p = strrchr(filename, '.');
|
| 932 | if (!p) return NULL; |
| 933 | |
| 934 | Xstrdup_a(ext, p + 1, return NULL); |
| 935 | g_strdown(ext); |
| 936 | mime_type = g_hash_table_lookup(mime_type_table, ext); |
| 937 | if (mime_type) {
|
| 938 | gchar *str; |
| 939 | |
| 940 | str = g_strconcat(mime_type->type, "/", mime_type->sub_type,
|
| 941 | NULL);
|
| 942 | return str;
|
| 943 | } |
| 944 | |
| 945 | return NULL; |
| 946 | } |
| 947 | |
| 948 | static GHashTable *procmime_get_mime_type_table(void) |
| 949 | {
|
| 950 | GHashTable *table = NULL;
|
| 951 | GList *cur; |
| 952 | MimeType *mime_type; |
| 953 | gchar **exts; |
| 954 | |
| 955 | if (!mime_type_list) {
|
| 956 | GList *list; |
| 957 | gchar *dir; |
| 958 | |
| 959 | mime_type_list = |
| 960 | procmime_get_mime_type_list(SYSCONFDIR "/mime.types");
|
| 961 | if (!mime_type_list) {
|
| 962 | list = procmime_get_mime_type_list("/etc/mime.types");
|
| 963 | mime_type_list = g_list_concat(mime_type_list, list); |
| 964 | } |
| 965 | dir = g_strconcat(get_home_dir(), G_DIR_SEPARATOR_S, RC_DIR, |
| 966 | G_DIR_SEPARATOR_S, "mime.types", NULL); |
| 967 | list = procmime_get_mime_type_list(dir); |
| 968 | g_free(dir); |
| 969 | mime_type_list = g_list_concat(mime_type_list, list); |
| 970 | |
| 971 | if (!mime_type_list) {
|
| 972 | g_warning("mime.types not found\n");
|
| 973 | return NULL; |
| 974 | } |
| 975 | } |
| 976 | |
| 977 | table = g_hash_table_new(g_str_hash, g_str_equal); |
| 978 | |
| 979 | for (cur = mime_type_list; cur != NULL; cur = cur->next) { |
| 980 | gint i; |
| 981 | gchar *key; |
| 982 | |
| 983 | mime_type = (MimeType *)cur->data; |
| 984 | |
| 985 | if (!mime_type->extension) continue; |
| 986 | |
| 987 | exts = g_strsplit(mime_type->extension, " ", 16); |
| 988 | for (i = 0; exts[i] != NULL; i++) { |
| 989 | /* make the key case insensitive */
|
| 990 | g_strdown(exts[i]); |
| 991 | /* use previously dup'd key on overwriting */
|
| 992 | if (g_hash_table_lookup(table, exts[i]))
|
| 993 | key = exts[i]; |
| 994 | else
|
| 995 | key = g_strdup(exts[i]); |
| 996 | g_hash_table_insert(table, key, mime_type); |
| 997 | } |
| 998 | g_strfreev(exts); |
| 999 | } |
| 1000 | |
| 1001 | return table;
|
| 1002 | } |
| 1003 | |
| 1004 | static GList *procmime_get_mime_type_list(const gchar *file) |
| 1005 | {
|
| 1006 | GList *list = NULL;
|
| 1007 | FILE *fp; |
| 1008 | gchar buf[BUFFSIZE]; |
| 1009 | guchar *p; |
| 1010 | gchar *delim; |
| 1011 | MimeType *mime_type; |
| 1012 | |
| 1013 | if ((fp = fopen(file, "rb")) == NULL) return NULL; |
| 1014 | |
| 1015 | debug_print("Reading %s ...\n", file);
|
| 1016 | |
| 1017 | while (fgets(buf, sizeof(buf), fp) != NULL) { |
| 1018 | p = strchr(buf, '#');
|
| 1019 | if (p) *p = '\0'; |
| 1020 | g_strstrip(buf); |
| 1021 | |
| 1022 | p = buf; |
| 1023 | while (*p && !isspace(*p)) p++;
|
| 1024 | if (*p) {
|
| 1025 | *p = '\0';
|
| 1026 | p++; |
| 1027 | } |
| 1028 | delim = strchr(buf, '/');
|
| 1029 | if (delim == NULL) continue; |
| 1030 | *delim = '\0';
|
| 1031 | |
| 1032 | mime_type = g_new(MimeType, 1);
|
| 1033 | mime_type->type = g_strdup(buf); |
| 1034 | mime_type->sub_type = g_strdup(delim + 1);
|
| 1035 | |
| 1036 | while (*p && isspace(*p)) p++;
|
| 1037 | if (*p)
|
| 1038 | mime_type->extension = g_strdup(p); |
| 1039 | else
|
| 1040 | mime_type->extension = NULL;
|
| 1041 | |
| 1042 | list = g_list_append(list, mime_type); |
| 1043 | } |
| 1044 | |
| 1045 | fclose(fp); |
| 1046 | |
| 1047 | if (!list)
|
| 1048 | g_warning("Can't read mime.types\n");
|
| 1049 | |
| 1050 | return list;
|
| 1051 | } |
| 1052 | |
| 1053 | EncodingType procmime_get_encoding_for_charset(const gchar *charset)
|
| 1054 | {
|
| 1055 | if (!charset)
|
| 1056 | return ENC_8BIT;
|
| 1057 | else if (!strncasecmp(charset, "ISO-2022-", 9) || |
| 1058 | !strcasecmp(charset, "US-ASCII"))
|
| 1059 | return ENC_7BIT;
|
| 1060 | else if (!strcasecmp(charset, "ISO-8859-5") || |
| 1061 | !strncasecmp(charset, "KOI8-", 5) || |
| 1062 | !strcasecmp(charset, "Windows-1251"))
|
| 1063 | return ENC_8BIT;
|
| 1064 | else if (!strncasecmp(charset, "ISO-8859-", 9)) |
| 1065 | return ENC_QUOTED_PRINTABLE;
|
| 1066 | else
|
| 1067 | return ENC_8BIT;
|
| 1068 | } |
| 1069 | |
| 1070 | EncodingType procmime_get_encoding_for_text_file(const gchar *file)
|
| 1071 | {
|
| 1072 | FILE *fp; |
| 1073 | guchar buf[BUFFSIZE]; |
| 1074 | size_t len; |
| 1075 | size_t octet_chars = 0;
|
| 1076 | size_t total_len = 0;
|
| 1077 | gfloat octet_percentage; |
| 1078 | |
| 1079 | if ((fp = fopen(file, "rb")) == NULL) { |
| 1080 | FILE_OP_ERROR(file, "fopen");
|
| 1081 | return ENC_UNKNOWN;
|
| 1082 | } |
| 1083 | |
| 1084 | while ((len = fread(buf, sizeof(guchar), sizeof(buf), fp)) > 0) { |
| 1085 | guchar *p; |
| 1086 | gint i; |
| 1087 | |
| 1088 | for (p = buf, i = 0; i < len; ++p, ++i) { |
| 1089 | if (*p & 0x80) |
| 1090 | ++octet_chars; |
| 1091 | } |
| 1092 | total_len += len; |
| 1093 | } |
| 1094 | |
| 1095 | fclose(fp); |
| 1096 | |
| 1097 | if (total_len > 0) |
| 1098 | octet_percentage = (gfloat)octet_chars / (gfloat)total_len; |
| 1099 | else
|
| 1100 | octet_percentage = 0.0; |
| 1101 | |
| 1102 | debug_print("procmime_get_encoding_for_text_file(): "
|
| 1103 | "8bit chars: %d / %d (%f%%)\n", octet_chars, total_len,
|
| 1104 | 100.0 * octet_percentage); |
| 1105 | |
| 1106 | if (octet_percentage > 0.20) { |
| 1107 | debug_print("using BASE64\n");
|
| 1108 | return ENC_BASE64;
|
| 1109 | } else if (octet_chars > 0) { |
| 1110 | debug_print("using quoted-printable\n");
|
| 1111 | return ENC_QUOTED_PRINTABLE;
|
| 1112 | } else {
|
| 1113 | debug_print("using 7bit\n");
|
| 1114 | return ENC_7BIT;
|
| 1115 | } |
| 1116 | } |
| 1117 | |
| 1118 | const gchar *procmime_get_encoding_str(EncodingType encoding)
|
| 1119 | {
|
| 1120 | static const gchar *encoding_str[] = { |
| 1121 | "7bit", "8bit", "quoted-printable", "base64", "x-uuencode", |
| 1122 | NULL
|
| 1123 | }; |
| 1124 | |
| 1125 | if (encoding >= ENC_7BIT && encoding <= ENC_UNKNOWN)
|
| 1126 | return encoding_str[encoding];
|
| 1127 | else
|
| 1128 | return NULL; |
| 1129 | } |